PMID- 3834218 TI - Lack of excitability in the internodal membrane of myelinated nerve fiber in frog. AB - Monophasic action potentials of about 70 and 10 mV were recorded by inserting a microelectrode into the axon and the myelin sheath of an intact myelinated fiber, respectively. When the intra-axonal or the intra-myelinic microelectrode was used for both stimulation and recording, only the anodal current was effective in inducing action potentials. The inter-nodal membrane was, therefore, intrinsically inexitable. PMID- 3834219 TI - Approach for quantifying the overall function of the ascending central neural integration to release vasopressin in rats. AB - Electrical stimulation of the intermediate portion of the solitary nucleus (SOL) is known to consistently elicit a pressor response and increase in the release of vasopressin (VP) in rats, when the cervical spinal cord and vago-sympathetic trunks are cut. The aim of the present study was to provide a methodological assessment for this technique, in order to quantify the central neuroendocrine function to release VP. Experiments were conducted on rats with cervical cordotomy and vagotomy, under 60% N2O anesthesia and artificial ventilation. The animals were maintained at their normal arterial blood pressure by infusing phenylephrine, which itself exerted little influence on the arterial plasma VP concentration (pVP) during SOL stimulation. In order to prevent blood loss, cross circulation with a donor rat was utilized in the blood sampling for pVP determination. We confirmed that this technique itself did not significantly affect the pVP level. A monopolar stimulus at a frequency of 50 Hz was found to produce the pressor response most effectively. The current spread of the stimulation (0.5 ms duration; 1 s on/1 s off; up to at least 120 microA) did not induce a false-positive pressor response mediated by other structures adjacent to the SOL. We suggest that electrical stimulation of the SOL in rats with cervical cordotomy and vagotomy, for observing the pressor response and/or increase of pVP, represents a rapid approach for screening the overall function of the ascending efferent part of the reflex mechanisms to release VP. PMID- 3834220 TI - Effects of polyamines on the mechanical and electrical activities of the isolated circular muscle of rat uterus. AB - Effects of polyamines (0.05-1.2 mM) on the mechanical and electrical activities in the circular muscles of pre-(day 20 of pregnancy) and post-partum (10-15 h after delivery) rat myometria were studied. In the prepartum preparations, spermine and spermidine, added to the Mg-free Krebs solution, depressed contractions in a dose-dependent manner, whereas cadaverine and putrescine potentiated them. The latter agents depressed contractions when preparations were treated with indomethacin. Plateau potentials were spontaneously generated in the Mg-free solution in the prepartum circular muscle. The duration of the plateau became shorter, and spike potentials supermounted on the plateau potential were depressed when spermine or spermidine was applied. In the postpartum preparations, spike activity was depressed by spermine and spermidine. In both pre- and post-partum preparations, the membrane activity was little affected by cadaverine and putrescine. In view of the above findings, it was hypothesized that polyamines in general took the place of divalent cations in causing membrane stabilization. Cadaverine and putrescine probably caused a potentiation of contraction by stimulating the synthesis of endogenous prostaglandins. PMID- 3834221 TI - [A developmental study about the effect of an organizational strategy on memory in mental retardates]. AB - The purpose of this study was to investigate the organizational strategy of memory in mental retardates. Forty young (mean CA = 9:07, mean IQ = 60) and forty old retardates (mean CA = 13:07, mean IQ = 58) were required to learn a list of sixteen pictures from four taxonomic categories. Learning was continued during four trials by study-test method. In B-C treatment subjects were presented the pictures in category block and required to recall in constrained method with category. In R-F treatment subjects were presented pictures in random order and asked free recall. The effect of an organizational strategy on recall prompted by B-C treatment was found to be greater in the old retardates than in the young retardates. Thus the memory strategy of retardates showed the same developmental order with time lag as in normal children, and the developmental lag theory (Zigler, 1969) was supported. PMID- 3834222 TI - [The attachment structure and the heterosexual relationship among university students]. AB - Research on adolescents in romantic love has suggested that their heterosexual relationship may be influenced by their attachment to their mothers and to friends of the same sex. Three hundred fifty-nine college students responded to a questionnaire designed to explore this correlation. The results indicated that male sexual behavior and feelings of romantic love towards their girl friends were not influenced by the attachment to their mothers nor to their friends whereas those of the females were. Females who were involved in intimate sexual relationship had weaker attachment to their mothers; on the other hand, females who had strong romantic feelings, yet without sexual relationships, tended to have strong attachment to their friends of the same sex. PMID- 3834223 TI - [Semantic priming effect on the perception of a Kanji]. AB - A priming experiment was conducted to investigate how semantic context affects the perception of a briefly exposed Kanji target. On each trial, a Kanji or a plus (neutral) was presented as the prime stimulus for 1 s. When the prime was a Kanji, subjects were required to imagine any compound word, the first letter of which was to be that prime. After a blank of 500 ms, a target Kanji was briefly exposed followed by a patterned mask and two response alternatives, one of which the subject was asked to choose. The duration of the target was so adjusted that each subject could respond correctly at approximately 75% level. The % choice response was higher when the prime and the target made up a compound word (related condition) and also matched to the imagined word (facilitation) than when not (neutral condition). When the prime and the target were unrelated, the performance was the worst (inhibition). In the related condition, however, responses were more accurate even when the prime-target pair did not match to the imagined compound word than in the unrelated condition. These results suggest that semantic priming effect occurs automatically regardless of whether the subject may expect the target or not. PMID- 3834224 TI - Nephrotoxic serum nephritis with hypertension: amelioration by antihypertensive therapy. AB - We have examined the effects of antihypertensive therapy on glomerular dynamics and on the clinical and morphologic features of a model of nephrotoxic serum nephritis (NSN) in which hypertension occurs. NSN was induced in uninephrectomized male Sprague Dawley rats, which drank 0.9% sodium chloride ad libitum. One-half were assigned randomly to a treated group whose blood pressure was normalized on a regimen of reserpine, hydralazine, and hydrochlorothiazide. Hypertension continued throughout the 6 weeks of study in untreated rats (blood pressure 148 +/- 5 vs. 103 +/- 3 mm Hg in treated rats, P less than 0.01). Urinary protein excretion was greater (437 +/- 110 vs. 254 +/- 81 mg/24 hr, P less than 0.005), and serum albumin lower (1.6 +/- 0.4 vs. 2.9 +/- 0.3 g/dl, P less than 0.01) in hypertensive animals. Diffuse glomerular endo- and extracapillary proliferation and arteriolar medial hypertrophy were observed frequently in nephritic rats with untreated hypertension. By contrast, structural abnormalities were limited primarily to focal segmental proliferation involving fewer than one-third of glomeruli in the absence of vascular changes in treated normotensive rats. Micropuncture studies performed 8 to 16 days after induction of nephritis showed a reduction in glomerular capillary pressure (46 +/- 1 vs. 55 +/- 1 mm Hg, P less than 0.001), glomerular plasma flow rate (115 +/- 20 vs. 160 +/- 20 nl/min, P less than 0.01), and single nephron filtration rate (42 +/- 4 vs. 56 +/- 5 nl/min, P less than 0.001) with antihypertensive treatment, suggesting that a hemodynamic mechanism may have been responsible for enhanced glomerular injury in the hypertensive nephritic animals. PMID- 3834225 TI - Renal hemodynamics and glomerular morphology in repetitively pregnant aging rats. AB - Measurements were made of renal and glomerular hemodynamics and glomerular morphology in repetitively pregnant and age-matched virgin female Munich-Wistar rats. Repetitive pregnancies and lactation provide a stimulus to chronic increases in glomerular filtration rate (GFR) and these rats were studied, by micropuncture, approximately 4 to 6 weeks after the end of the fifth gestation/lactation cycle. No differences were seen in GFR or renal plasma flow (RPF) rate nor in any of the determinants of single nephron filtration rate (SNGFR) in repetitively pregnant compared to virgin rats, although SNGFR itself was slightly but significantly elevated in repetitively pregnant rats. There was no evidence of systemic hypertension, proteinuria, or abnormal glomerular morphology in either group despite their advanced age (approximately 42 to 46 weeks). Thus, the moderate chronic increase in GFR due to the stimulus of repetitive pregnancy and lactation does not lead to eventual deterioration in renal function or structural abnormalities. PMID- 3834226 TI - Preferential transport of non-enzymatically glucosylated ferritin across the kidney glomerulus. AB - We have examined the significance of carbohydrate structure to the transglomerular passage of proteins. Carbohydrate-free (non-glycosylated) ferritin, prepared by Concanavalin-A-sepharose affinity chromatography, was perfused into rat kidneys, and was observed to be restricted from transglomerular transport and to accumulate within the lamina rara interna of the glomerular basement membrane. Visibility of the laminar structure of the glomerular basement membrane was enhanced following perfusion fixation containing tannic acid, permitting the observation of charge dense regions within the basement membrane. Non-enzymatically glucosylated ferritin was not restricted by the lamina rara interna and was observed to penetrate the lamina densa and lamina rara externa. Glucosylated ferritin was observed to be sequestered also by epithelial pinocytic vesicles and to be accumulated within multivesicular bodies. Quantitative measurements using fluorescently labelled ferritins indicated the preferential clearance of glucosylated ferritin from the plasma and preferential appearance of glucosylated ferritin in the urine. The differential transport of glucosylated ferritin was not due to the formation of a cationic protein, as isoelectric focusing established that glucosylation of ferritin results in a more anionic protein. These studies suggest that glucosylation of anionic proteins results in their increased transglomerular permeability. This increased protein permeability could contribute to the proteinuria observed in diabetic microangiopathy. PMID- 3834227 TI - Hemodialysis membrane-induced activation of phagocyte oxidative metabolism detected in vivo and in vitro within microamounts of whole blood. AB - The production of reactive oxygen species by phagocytes from uremic patients undergoing hemodialysis was monitored by chemiluminescence (CL) within microamounts of whole blood or isolated polymorphonuclear (PMN) cells, and compared on the basis of the dialysis membrane, cuprophane (CUP) or polyacrilonitrile (PAN). Compared to control subjects, resting and stimulated CL (with latex, zymosan, phorbol myristate acetate (PMA) but not formyl-methionyl leucyl-phenylalanine (FMLP) were decreased in 10(-2) diluted blood sampled before dialysis. After 15 min of dialysis (ti), resting whole blood (10(-1) and 10(-2) diluted) CL increased sharply in patients dialyzed with the CUP but not the PAN membrane, while it returned to its predialysis level at the end of the session. This sharp resting CL increase found in whole blood at ti was not observed in isolated PMN cells except when tested with ti plasma from CUP dialyzed patients, suggesting that it was mediated via activated plasma compounds. In vitro treatment of normal blood, plasma, and isolated PMN cells with CUP membrane fragments reproduced this in vivo dialysis-induced activation of phagocyte oxidative metabolism strikingly and demonstrated additionally the requirement of complement for its induction. We propose this model as an effective means of evaluating dialysis membrane biocompatibility. PMID- 3834228 TI - Electrical charge of serum and urinary albumin in normal and diabetic humans. AB - The isoelectric points of albumin purified by pseudo-ligand chromatography on Affi-Gel Blue were determined simultaneously in serum and urine of 11 normal subjects and 25 diabetic patients, subdivided in groups according to their urinary excretion rates of albumin. Serum albumin was constituted by a single homogeneous peak at 4.7 (pI) in normal subjects, whereas the levels for diabetic patients covered this band and some other microheterogeneous levels, ranging from 3.5 to 7 pI. By affinity chromatography with Concanavalin A-Sepharose and immunoelectrophoretic techniques, all these micro-heterogeneous bands were characterized as glycosyl albumin. In normal subjects and diabetic patients whose urinary excretion rate of albumin was normal or increased only slightly (10 to 100 micrograms/min), the pattern of urinary albumin included a main band with normal pI (4.7) and some remarkable amounts of more anionic bands (pI between 4.0 and 4.7) if compared to the native protein, which was characterized as glycosyl albumin. Such a difference was not detected in urines of diabetic patients with clinical nephropathy. These results indicate that the non-enzymatic glycosylation of albumin is a main determinant of the excretion of this protein into urine, in spite of the anionic electrical charge. We describe also the renal selectivity properties in humans that may be viewed as a model for the study of renal disease, but the role of such a mechanism in early diabetic nephropathy remains unknown. PMID- 3834229 TI - Acid-base homeostasis during chronic PTH excess in humans. AB - The chronic renal and systemic acid-base effects of hyperparathyroidism in humans remain controversial and unresolved. The present studies evaluated the acid-base response of normal human subjects to a 13-day intravenous infusion of synthetic b(1-34) PTH sufficient to result in sustained hypercalcemia and hypophosphatemia. The acid-base response was biphasic: an initial transient renal acidosis developed on the first day of PTH infusion, followed by a prompt increase in net acid excretion and plasma [HCO3-] of sufficient magnitude to result in a steady state of mild metabolic alkalosis. The results indicate that: 1) sustained, continuous, experimentally produced hyperparathyroidism results in a steady state of mild metabolic alkalosis; 2) the alkalosis is both generated and maintained, at least in part, by renal mechanisms; and 3) reported renal acidosis in sustained clinical conditions of primary hyperparathyroidism is not attributable to either direct or indirect effects of PTH excess when present for a 2-week period, an interval sufficient to re-establish a new steady state of renal and systemic acid-base equilibrium. PMID- 3834230 TI - Continuous ambulatory peritoneal dialysis in the United States: a three-year study. AB - This report of the NIH-supported National Continuous Ambulatory Peritoneal Dialysis (CAPD) Registry summarizes data on 7,404 patients treated with CAPD during the three-year period 1981 through 1983, or nearly one-half of patients treated in the USA who were treated with CAPD during this time. While age and diabetes mellitus impact on mortality, they appear to have a limited influence on transfer or infection rate. There were 1.7 episodes of peritonitis, 0.7 exit site/tunnel infections, and 0.3 catheter replacements reported per patient year of observation. Patients averaged 10.2 hospital days per year for CAPD complications and 22.3 hospital days per year for all causes. Comparisons of these data with similar data reported for other therapies are subject to variations in the distribution of population and disease characteristics, as well as the length of the observation period. PMID- 3834231 TI - Interrelationship between cardiac output and vascular resistance as determinants of effective arterial blood volume in cirrhotic patients. AB - The effect of head-out water immersion (HWI) in decompensated cirrhotic patients to correct sodium and water excretion has been found to be incomplete and variable. The explanation may be that the efficacy of HWI in correcting a decreased effective arterial blood volume (EABV) in decompensated cirrhotic patients is limited by an accompanying decrease in systemic vascular resistance (SVR) and thus a relative increase in arterial vascular holding capacity. The present studies were undertaken to examine this possibility by maintaining SVR (dynes X sec X cm-5) nearly constant during HWI with an exogenous infusion of norepinephrine (HWI + NE). In six decompensated cirrhotic patients, neither HWI nor NE infusion alone significantly increased sodium excretion (UNaV, 13 vs. 19 and 13 microEq/min, respectively), but each maneuver increased the excretion of a 20 ml/kg water load (28 to 60 and 61%, respectively, both P less than 0.05). The combination of HWI + NE, however, significantly increased UNaV to 70 microEq/min (P less than 0.05) and percentage of water excretion to 95 (P less than 0.001), values significantly greater than those achieved with either maneuver alone. These differences were not explained by any changes in inulin clearance. With HWI alone, cardiac index (CI) increased (4.2 to 5.3 liter/min/m2, P less than 0.01), but SVR decreased (872 to 613 dynes X sec X cm-5, P less than 0.001) and mean arterial pressure (MAP) remained constant (83 vs. 78 mm Hg).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3834232 TI - Lead nephropathy. PMID- 3834233 TI - International symposium. New experimental findings on Hydergine. Paris, October 29th, 1984. PMID- 3834234 TI - A report on the use of pulvis resinae in the treatment of thromboangiitis obliterans. PMID- 3834235 TI - Observations on the effects of acupuncture at Neiguan point on the left ventricle functions in 106 normal persons and 100 patients with heart disease. PMID- 3834236 TI - Hemicrania treated with zhi pian tong medicinal granules--a report on 150 cases. PMID- 3834237 TI - Acupuncture treatment for aerotitis media. PMID- 3834238 TI - Auriculo-acupuncture in 15 cases of discoid lupus erythematosus. PMID- 3834239 TI - Treatment and prevention of fulminant red-eye by acupuncture and bloodletting. PMID- 3834240 TI - Blood chemistry in deficiency of kidney-yin and deficiency of kidney-yang types of subacute systemic lupus erythematosus. PMID- 3834241 TI - Studies of qingyangshen (root of Cynanchum otophyllum). III. Effect of qingyangshen on acetylcholine concentration in mouse brain. PMID- 3834242 TI - Antitumor activities and tumor necrosis factor producibility of traditional Chinese medicines and crude drugs. PMID- 3834243 TI - Studies on preventive and therapeutic actions of Radix Salviae Miltiorrhizae in experimental cirrhosis. PMID- 3834244 TI - Investigations of morphological structure of acupuncture points and meridians. PMID- 3834245 TI - [Histochemical study of pelvic endometriosis]. AB - Fifteen cases of pelvic endometriosis were examined histochemically. It has been observed that the activity of alkaline and acid phosphatase in endometriotic foci is identical, regardless of the organ in which it occurs. The significance of pelvic endometriosis as a potential source of a malignant alteration is pointed out. PMID- 3834246 TI - [Levels of serum IgE and eosinophilic granulocytes in women with cancer of the uterine cervix]. AB - In a homogeneous group of patients with diagnosis ca cervicis uteri III B and eosinophilia the concentration of IgE in serum was studied before and during therapy with radiation. In the group of 17 patients in whom concentrations of IgE before radiation were within normal limits (mean = 40.6), after radiation they did not essentially change (mean = 37.1; t less than tgr; P greater than 0.05) and eosinophilia significantly increased at the end of therapy (t = 3.38; P less than 0.05). In the second group of 16 patients higher concentrations of IgE were found before radiation (means = 251.8) and a significant decrease after radiation (mean = 184.6; t = 2.55; P less than 0.05). Eosinophilia had increased here as well (mean = 12.88; t = 8.29; P less than 0.05). Higher concentrations of IgE and eosinophilia are probably partly due to the lack of specific T-suppressor cells for IgE but also partly due to tumour antigens. PMID- 3834247 TI - [Acceleration of fetal growth]. AB - By random sampling, a total of 656 newborn infants were selected, whose mothers knew the first day of their last menstruation. Newborn infants were divided into 3 groups: premature, at-term and postmature infants. Weight and height were measured in 583 at-term infants in 1954 and 1979. It was found that newborn infants of primiparas and multiparas from 1979 were statistically significantly heavier and longer than newborn infants from 1954. Newborn infants in 1979 of primiparas were 184.38 gm heavier and 2.33 cm longer and those of multiparas were 151.51 gm heavier and 2.31 cm longer than those in 1954. The differences were the same for male and female infants. In the same period, no statistically significant changes occurred in the frequency of at-term labours. In the 25-year period significant socio-economic changes occurred in the Zadar region which enabled better employment of the population in all economic branches, especially in tourism and industry. PMID- 3834248 TI - [The value of the cardiotocographic index in the 2d stage of labor]. AB - In the analysis of sixty five (65) cardiotocographic patterns performed at least half an hour before delivery of the child, the authors have used Kuvacic's CTG score in the second stage of labour as well as Hammacher's CTG score. The cardiotocographic patterns were evaluated on the basis of Kuvacic's CTG score for the second stage of labour and the fetal blood acid-base condition was observed. The authors obtained some statistically important correlation coefficients between CTG score and the values of the pH, pCO2 and BE in the blood of fetal umbilical artery and between CTG score and Apgar score after one and five minutes. Out of obtained results the authors have concluded that Kuvacic's CTG score for the second stage of labour is as precise as Hammacher's score, but is more simple. PMID- 3834249 TI - [Effect of spasmo-analgesics on uterine activity in induced labor]. AB - On the basis of two randomly selected, independent, clinically and statistically comparable groups of induced labours the influence of a spasmoanalgetic combination of Valium and Dolantin on uterine activity and indirectly on the progression of labour was studied. Each group consisted of nineteen primiparous women differing from one another only by having been or not having been administrated spasmoanalgetics. All the laboures were monitored by the direct method of internal cardiotocography. Uterine activity was manually calculated with planimetrically presented active pressure area (APA). The ratio between the calculated activity in kPa/sec and cervical dilatation in cms resulted in the resistance-gram. Quantitative statistical analysis has shown significantly lower total and average ten-minute uterine activity in the group to which spasmoanalgetics were administered and where there were no changes in the duration of dilatation. Assuming that the total uterine impulse is an indirect index of cervical resistance, it can be concluded that spasmoanalgetics reduce cervical resistance. PMID- 3834250 TI - [Pregnancy, labor and the neonate of the adolescent female]. AB - The authors studied pregnancies in adolescents, younger than 18, from 1973 to 1983. The control group, randomly selected, consisted of 1000 child-bearing-women from 1976 (excluding adolescents and multiple pregnancies). The frequency of their labours was 3.24% and for the past five and a half years it decreased from 3.56% to 2.93% (P 0.05). There were 17.86 labours per 1000 adolescents in the age between 15 and 18. Adolescents are considerably more often living in rural areas, are single and unemployed than pregnant women in the control group. (P 0.001). EPH gestosis and threatened miscarriage are more frequent in adolescents than in the control group (P 0.05). Premature labour in adolescents occurs in 11.13% of cases, and postmature labour in 1.81% of cases, which is more frequent than in the control group (P 0.01). Pregnancy in adolescents lasts on the average 39.0 and in the control group 39.4 weeks. Adolescents are mostly primiparas (95.7%) and their labour lasts up to 12 hours (89.37%). Labours are mostly spontaneous (94.34%) and the frequency of cesarean sections is lower than in the control group (P 0.05). Adolescents' newborn infants are lighter than newborn infants in the control group (P 0.05). The newborn infants' birth weight increases with the age of their adolescents mothers. At birth, newborn infants of adolescent mothers have lower values of Apgar index than infants in the control group, have early neonatal complications in 16.06% of cases while infants in the control group in 12.40% of cases (P 0.05).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3834251 TI - [Abdominal pregnancy located in the greater omentum]. AB - A patient aged 23, clinically suspected to have an extrauterine pregnancy, underwent puncture of the Douglas' pouch and the blood was obtained. During the operation, about one liter of blood was found in the abdomen and on the edge of the greater omentum a molla cruenta, the size of a small egg. Part of the omentum with the molla cruenta was redissected. Histological analysis verified pregnancy and endometriosis. PMID- 3834252 TI - Magnesium and the cardiovascular system. 12th annual French colloquium on magnesium. Paris, December 8, 1984. PMID- 3834253 TI - [Study of several parameters of magnesium metabolism in spontaneously hypertensive rats]. AB - We have compared a few parameters of magnesium metabolism in spontaneously hypertensive (SHR) and Wistar Kyoto rats (WKY). The results show a decrease of plasma magnesium and urinary magnesium. There is no difference in fecal magnesium and in balance of magnesium. These results have raised a question as to the importance of changes in magnesium metabolism in the mechanism of hypertension. PMID- 3834254 TI - Serum magnesium levels in patients after myocardial infarction or unstable angina treated with nitrites and calcium antagonists. AB - A rise of serum Mg levels was observed in patients at 3 and 6 months after acute myocardial infarction, irrespective of therapeutic regimen. In unstable angina follow-up, serum Mg levels remained stable, but below normal values (normal mean values = 2.1 +/- SD 0.4 mg%). A significant difference between mean Mg levels at 6 months was noted in patients with unstable angina treated with calcium antagonists and nitrites as well as in patients treated only with nitrites (p less than 0.02). PMID- 3834255 TI - [Magnesium, calcium, zinc, potassium, total and HDL cholesterol and total creatine kinase in 37 cases of instable angina: a correlation study]. AB - Plasma and erythrocyte magnesium (P-Mg, E-Mg), zinc (P-Zn, E-Zn) and potassium (P K, E-K), plasma calcium (P-Ca), HDL-cholesterol and total cholesterol and total creatine kinase (TCK) were determined in 37 cases (26 men, 11 women) of unstable angina pectoris (UAP) on the first day of hospitalization. The same variables, except P-K and TCK, were measured in 58 male and 53 female reference subjects. The methods of measurement were emission spectrometry for K, atomic absorption spectrometry for Mg, Ca and Zn, and the R CK NAC-activated Merckotest for TCK. According to the normality of distributions, statistical analysis of results was performed either by parametric or nonparametric tests. Multiple (R), simple (r) and Spearman (rs) correlation coefficients were calculated, and only significant correlations (p less than or equal to 0.05) were accepted. There was no significant R for UAP patients. For UAP men, r was negative and significant between P-Mg and E-K, but positive between P-Ca and P-Zn, as for reference subjects; and rs was negative and significant between P-Zn and TCK. For UAP women, only rs was positive and significant, between P-Mg and TCK. In the UAP population, contrary to the reference population, there were no significant differences relative to sex. In comparison with reference men, UAP men presented a significant (p less than 0.005) increase in E-Mg and significant (p less than 0.001) decreases in P-Ca and P-Zn.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3834256 TI - [Behavior of urinary magnesium in comparison with urinary calcium and oxaluria in rats subjected to portacaval anastomosis]. AB - Rats with a portacaval anastomosis are known to be susceptible to develop uric acid stones. The present studies were undertaken to investigate urinary Mg, Ca and oxalate excretion in such rats. We found that their Mg excretion was doubled, Ca excretion tripled, and oxaluria somewhat decreased. The Ca crystallization attributed to the increased Ca2+ in the urine is, therefore, somewhat held in check by the increased presence of Mg in the urine and by decreased oxalates. PMID- 3834257 TI - [Comparison of the effects of taurine and magnesium on electrical characteristics of artificial and natural membranes. V. Study on the human amnion of the antagonism between magnesium, taurine and polluting metals]. AB - The effects of metal pollutants (Pb, Cd, Hg, As) were studied on strips of human amnion isolated from the placental zone put in between two Ussing chambers with Hanks' solution at 37 degrees C and pH 7.4. The total conductance Gt through the human isolated amnion was decreased on the fetal side by Pb and As; on the maternal side by Cd, Hg and As. When Gt was decreased by metal pollutants, Mg or taurine (TA) were added in the external medium to induce an antagonism between Mg or TA and metal pollutants. The addition of Mg increased significantly the Gt reduced by Pb, Cd and Hg, but had no effect on the Gt reduced by As. The addition of taurine increased significantly the Gt reduced by Cd and Hg, but had no effect on the Gt reduced by Pb and As. Dixon's kinetics (Gt as a function of the Mg or TA concentration when the metal pollutant concentration increased) indicate that there is a competitive inhibition between Mg-Pb and Mg-Cd (the inhibition constant Ki is lower with Pb (= 2.5) than with Cd (= 11.4) and suggests a greater antagonism between Mg-Pb than between Mg-Cd). Moreover, there appears to be a noncompetitive inhibition between Mg-Hg, TA-Cd and TA-Hg. These results indicate that Mg and TA, on the fetal side, exert an action on the same sites and that, on the maternal side, their action takes place on the same sites and also on different ones. Also, TA can be considered as a partial magnesium agonist, at least in the human amnion. PMID- 3834258 TI - Effect of immobilization on histological and histochemical changes in the myocardium of rats on a low-magnesium diet. PMID- 3834259 TI - The effect of immobilization on ultrastructural changes in the myocardium of rats on a low-magnesium diet. PMID- 3834260 TI - Glomerules and juxtaglomerular system's structural changes in rats under hypokinesia. PMID- 3834261 TI - Urinary excretion of porphyrins and their precursors in chronic liver disease. PMID- 3834263 TI - Ethical problems in family psychotherapy of patients with hermaphroditism. PMID- 3834262 TI - Results of combined treatment with 5-fluorocytosine (5FC) and amphoterycine B in a case of cerebrospinal meningitis due to Candida albicans in an infant. PMID- 3834264 TI - Academic staff development. PMID- 3834265 TI - Understanding the processes of consultation: some models and their uses. PMID- 3834266 TI - A strategy for the education of 21st century physicians. PMID- 3834267 TI - Patient satisfaction with medical students' clinical skills: comparison of randomly selected hospital patients and trained patients. PMID- 3834268 TI - The way we teach psychology to dental students. PMID- 3834269 TI - The way we teach information-seeking skills. PMID- 3834270 TI - How we teach social medicine in a more interesting and coherent way. PMID- 3834271 TI - Patient education: the importance of instructional time and active patient involvement. PMID- 3834272 TI - CCTV in physiotherapy education--a survey of U.K. physiotherapy schools. PMID- 3834273 TI - The innovative process in medical education. PMID- 3834274 TI - Studies on a new progesterone-16 alpha-hydroxylating Streptomyces. PMID- 3834275 TI - [Variation in the heterotrophic activity and bacterial density of beach water from Barcelona]. PMID- 3834276 TI - [Antimicrobial activity against Yersinia enterocolitica in higher plants]. PMID- 3834277 TI - Transmission of Streptococcus mutans in some selected families. AB - The aim of the present study was to determine the source and transmission route of Streptococcus mutans. The frequency of this organism in saliva and plaque samples was compared among fifteen pairs of mothers and their children. The results showed that most of the mothers harboured almost equal or greater levels of S. mutans than their children. Similarities of the distribution of various serotypes and mutacin types were observed between these mothers and their offspring. Samples were also collected from plaque and/or carious lesions of the relatives of the subjects who carried one of the serotypes other than serotype c as the dominant S. mutans. The strains of the same serotypes of S. mutans which possessed similar mutacin patterns were predominantly detected in the siblings and mothers of each subject. However, a similar distribution of S. mutans strains was not clearly observed in other relatives including fathers, aunts, uncles and grandparents. PMID- 3834278 TI - A further contribution to the study of the genus Penicillium. AB - A study of one hundred Penicillium strains belonging to Raper and Thom's monoverticillate series was carried out. The data compiled led to the conclusion that there are no significant biochemical differences which would make possible an accurate separation of the strains belonging to the series. PMID- 3834279 TI - Complications of peritoneal dialysis: a review of 226 dialysis episodes in 100 consecutive patients treated with peritoneal dialysis. PMID- 3834280 TI - Pectoralis major myocutaneous flap in head and neck surgery. PMID- 3834281 TI - Ameloblastoma: a still controversial tumour. PMID- 3834283 TI - Management of massive haemoptysis by percutaneous trans-arterial embolisation: a case report. PMID- 3834282 TI - Urodynamic evaluation of lower urinary tract function in the neurogenic bladder. PMID- 3834284 TI - True ankylosis of temporomandibular joint: a case report. PMID- 3834285 TI - "Miotic-induced retinal detachment": a case report. PMID- 3834286 TI - Use of steroids sparingly especially in children. PMID- 3834287 TI - The use of r value. PMID- 3834288 TI - Life-styles and health-related behaviour. PMID- 3834289 TI - Population 70 million: a consideration of health aspects. PMID- 3834290 TI - Growth charts based on longitudinal study of Malaysian children from birth to six years. PMID- 3834291 TI - Head circumference of Malaysian school children. PMID- 3834292 TI - Immunization: acceptance rates in a military community. PMID- 3834293 TI - 405 cases of bronchial brushing cytology: an evaluation. PMID- 3834294 TI - [The IOS 1999 International standard: 10 years later]. PMID- 3834295 TI - [European Community/Canada interlaboratory program of asbestos fiber counting criteria: main results and comparison with analogous studies]. PMID- 3834296 TI - [Study on mesothelioma in Lombardy from 1978 to 1982]. PMID- 3834297 TI - Evolution of lung function and radiographic abnormalities in silicosis. PMID- 3834298 TI - Shrimp-meal asthma in the aquaculture industry. PMID- 3834299 TI - [Relation between non-specific bronchial hyperreactivity, smoking, atopy and respiratory function conditions in non-asthmatic subjects]. PMID- 3834300 TI - [Interference of lead on membrane lipids]. PMID- 3834301 TI - [Changes in the spine in working populations. 2: Reference values for the movement of the vertebral column for adult male subjects]. PMID- 3834302 TI - [Are sports always contraindicated in children with chronic diseases? The pediatric point of view]. PMID- 3834303 TI - [Prophylaxis of cystinic calculosis with alpha mercapto propionylglycine. Personal cases]. PMID- 3834304 TI - [Serum alkaline phosphatase and its isoenzymes in the neonatal period]. PMID- 3834305 TI - [Spontaneous perforation of the bile ducts]. PMID- 3834306 TI - [Curing the child with cancer: the psychological cost]. PMID- 3834307 TI - [Evaluation of the nutritional status of patients with chronic renal insufficiency. Muscle area, fat area and weight/height index]. PMID- 3834308 TI - [Blood groups in pediatric surgical diseases]. PMID- 3834309 TI - [Long-term personal experience in the diagnosis of amino acidopathies by chromatography of serum according to the method of Scriver et al]. PMID- 3834310 TI - [Infection of the lower respiratory tract and air trapping]. PMID- 3834311 TI - [The renin-angiotensin-aldosterone system in acromegaly patients with arterial hypertension]. PMID- 3834312 TI - [Effects of short-term therapy with levothyroxine on lipid metabolism]. PMID- 3834313 TI - [Autosomal dominant transmission of familial idiopathic hypoparathyroidism]. PMID- 3834314 TI - [Effect of hypothalamic phospholipids in the incretory activity of the hypophysis]. PMID- 3834315 TI - Lennert's lymphoma of the thyroid. PMID- 3834316 TI - [Addison's disease and pregnancy]. PMID- 3834317 TI - Fourth Symposium on Epidemiology and Cancer Registries in the Pacific Basin. Proceedings of a symposium held in Kona, Hawaii, January 16-20, 1984. PMID- 3834318 TI - Cancer incidence in the Pacific Basin. PMID- 3834319 TI - A case-control study of lung cancer in Shanghai. AB - Lung cancer mortality rates are higher in Shanghai than all other large cities in China, with rates for females among the highest in the world. In this paper, we describe a case-control study now under way in Shanghai to evaluate reasons for this pattern, reviewing what is known about the risk factors under study. The objectives and methods used in the investigation are outlined. PMID- 3834320 TI - Correlations of values of micronutrients in sera with gastric pathology. AB - Sera were collected in a high-risk area for stomach cancer in Colombia from 857 residents who had been gastroscoped. The levels of 6 micronutrients (retinol, beta-carotene, ascorbic acid, vitamin E, prealbumin, retinol-binding protein) were measured and the mean values correlated with the presence of gastric pathology thought to represent precursors of stomach cancer. Two micronutrients showed important variations in mean levels by gastric pathology: beta-carotene and vitamin E. Beta-carotene levels were low in patients with dysplasia, but no differences were detected for retinol levels. PMID- 3834321 TI - Urinary sodium-to-creatinine ratio as an indicator of gastric cancer risk. AB - The difficulties in the estimation of daily intake of sodium chloride in populations are discussed. Total daily output calculations are hindered by the difficulties investigators encounter in obtaining accurate 24-hour urine collections in field work situations. As an alternative, urinary sodium-to creatinine ratios were investigated. Such ratios, which do not change significantly with circadian excretion rhythms, are useful indicators of the amount of sodium excreted in the urine. Preliminary observations in Colombian populations at high and low risk of gastric cancer indicated higher sodium excretion in the high-risk group. Loss of sodium by other means, especially perspiration, needs to be estimated in some other way. PMID- 3834322 TI - Vitamin A and cancer incidence in a retirement community. AB - The use of vitamin A supplements and the risk of cancer was examined in a cohort of 11,888 residents of a retirement community near Los Angeles, California. After 2 1/2 years of follow-up, 445 incident cancers occurred in 435 of the study participants. Overall, the relative risk of cancer for supplement users versus nonusers was 1.0. In a subset of 32 randomly selected individuals, the 14 supplement users had a significantly higher mean serum retinol level (86 micrograms/dl) than did the 18 nonusers (74 micrograms/dl). PMID- 3834323 TI - Relationship of dietary vitamin A and ascorbic acid intake to the risk for cancers of the lung, bladder, and prostate in Hawaii. AB - This report presents preliminary findings from 3 case-control studies in Hawaii in which we are examining the relationship of dietary vitamin A and ascorbic acid intake to the risk for cancers of the lung, bladder, and prostate. All 3 studies involved home interviews of cancer patients and neighborhood controls and use of quantitative dietary history method. In the lung cancer study, we found an inverse dose-response effect for total vitamin A intake in males only, with an odds ratio of 1.8 (P less than .05) for the lowest intake quartile relative to the highest; we found no association for ascorbic acid. In the bladder cancer study, we found lower (but not statistically significant) mean intakes of both vitamins in patients compared with controls, with the effect stronger for ascorbic acid. In the prostate cancer study, no effect was detected for total vitamin A or ascorbic acid in men less than 70 years old, but a direct association of vitamin A only with a dose-response gradient was found for men 70 years or older (odds ratio = 1.87; P less than .05, for the highest relative to the lowest intake quartile). Our findings at present indicate that vitamin A has a protective effect against lung and bladder cancers but not against prostate cancer and that ascorbic acid has a protective effect against bladder cancer as well. In our later analyses, we will examine the possibility that the effects of vitamin A vary with histologic type and that this may account for the lack of an association with lung cancer in women. PMID- 3834324 TI - Mortality in Japanese with life-styles similar to Seventh-Day Adventists: strategy for risk reduction by life-style modification. AB - Using 16 years of follow-up results of a prospective cohort study for 122,261 men, 95% of the census population, aged 40 years and older in 29 Health Center Districts in Japan as subjects, we compared the age-standardized mortality rates for cancer of each site and other causes of death in Japanese with life-styles similar to those of Seventh-Day Adventists (SDA), i.e., no smoking, no drinking, no meat consumption daily and eating green and yellow vegetables daily, with those of Japanese with opposite life-styles. Compared with the latter Japanese, the risks were one-fifth or less in Japanese with SDA-like life-styles for cancers of the mouth, pharynx, esophagus, and lung, and subarachnoid hemorrhage. Risks were less than one-half for cancers of all sites, stomach, and liver, and for peptic ulcer and heart disease. As a single factor, the addition of daily smoking was observed to elevate the risk most strikingly in Japanese who followed SDA life patterns. Influences of further addition of habits of daily drinking of alcohol and dietary changes were significant for cancers of the esophagus, liver, and bladder and other selected diseases. Strategies for cancer prevention by means of life-style modification, e.g., increased consumption of green and yellow vegetables, were discussed. PMID- 3834326 TI - Cancer mortality experience of woodworkers, loggers, fishermen, farmers, and miners in British Columbia. AB - To evaluate occupational cancer mortality in British Columbia, we calculated the age-standardized proportional mortality ratios (PMR) and proportional cancer mortality ratios (PCMR) for 4,091 woodworkers, 5,457 loggers, 2,020 fishermen, 4,066 farmers, and 1,912 miners. Woodworkers 20-65 years old had significantly elevated risks of death from stomach cancer (PCMR = 128, P less than .01) and non Hodgkin's lymphoma (PCMR = 140, P less than .05). Loggers appear to have an elevated risk of death from nasal sinus tumors (PCMR = 364, P less than .05). Fishermen had an elevated risk of stomach cancer (PCMR = 168, P less than .01). Farmers in British Columbia appeared to have excess risks of stomach (PCMR = 136, P less than .01) and liver cancer (PCMR = 173, P less than .05), but decreased risk from lung cancer (PCMR = 76, P less than .01). Miners had an elevated risk of death from lung cancer (PCMR = 127, P less than .05) and primary eye tumors (PCMR = 569, P less than .05). PMID- 3834325 TI - Uses of a cancer registry in the assessment of occupational cancer risks. AB - Five approaches for the evaluation of occupational factors in cancer etiology are described. These approaches, based on one's having access to cancer registry data, are for examining cancer profiles for industry and occupation, evaluating information on occupation and industry to infer exposure, observing time trends in incidence to evaluate tumors of occupational interest, using cases of interest to form the basis for case-control studies, and linking cohorts with known exposure to the tumor registry to ascertain cancer incidence in that cohort. PMID- 3834327 TI - Relationship of occupation with cancer of the maxillary sinuses in Hokkaido, Japan. AB - The age-standardized mortality rates for cancers of the nose, middle ear, and maxillary sinuses in Japan were calculated for 1970 and compared with those for 1975 and 1980. Japan shows a downward trend of these rates in both sexes in recent years. Demographic correlation analyses revealed that only the proportion of persons engaged in the lumber industry was positively correlated with the male maxillary sinus cancer mortality rate. A matched-pair case-control study was performed in Hokkaido in 1982; we collected data by questionnaires mailed to 41 male patients with maxillary sinus cancer and their age-, sex-, and residence matched community controls and 82 males with laryngeal cancer and their community controls. Family, educational, and past histories of chronic sinusitis were not correlated with either maxillary sinus or laryngeal cancer. A cluster of occupations comprised of workers exposed to some chemical substances, coal miners, and tailors showed a significant elevated risk for maxillary sinus cancer but not for laryngeal cancer. PMID- 3834328 TI - Medical and dental x rays as risk factors for recently diagnosed tumors of the head. AB - We used epidemiologic data on 2 tumor sites, the intracranial meninges and the parotid gland, to evaluate the importance of medical and dental x rays as risk factors for radiogenic tumors of the head diagnosed among residents of Los Angeles County in recent years. Exposures to x-ray treatment to the head and to full-mouth dental x-ray series before 1960 appear to be risk factors for both meningiomas and parotid tumors. Evidence from both descriptive and analytic studies suggests that the female over male excess of meningiomas, which is greatest from ages 25 to 54 years, may be partially explained by the excess exposure of young women to dental x rays. Study participants' ability to recall diagnostic x rays accurately is also evaluated by our comparisons of interview data to those available from dental charts. Recall of these events appears to be unbiased and accurate enough to justify the use of interview data in investigations of these risk factors. PMID- 3834329 TI - Occurrence of second primary cancers among patients with cervical cancer in Osaka, Japan. AB - Using the data accumulated in the Osaka Cancer Registry, we conducted a study on the effect of radiotherapy for cervical cancer in causing second primary cancers. Two groups of patients with cervical cancer, 1,767 who were given radiotherapy and 1,377 who were not, were followed for 7-9 years on average. In the radiotherapy group, 79 women had second primaries, and in the nonradiotherapy group, 23 did. These figures were compared with the expected cancer incidence for all sites. In the radiotherapy group, a significantly high observed-to-expected ratio was noted in cancers of the rectum, lung, and bladder. The nonradiotherapy group showed no site with a significantly high observed-to-expected ratio. Factors causing the increased level of lung cancer were studied. Some evidence indicated the excess was probably not related to smoking but to radiation, although the mechanism is unknown. PMID- 3834330 TI - Occurrence of breast cancer in relation to diet and reproductive history: a case control study in Fukuoka, Japan. AB - An epidemiologic study on breast cancer in relation to diet and reproductive history was conducted with 3 populations at different levels of risk for the disease: Japanese in Fukuoka, Japan (low risk), Japanese in Hawaii (intermediate risk), and Caucasians in Hawaii (high risk). This report describes the Fukuoka portion of the study. We interviewed 212 patients with histologically confirmed breast cancer and an equal number each of hospital and neighborhood controls to determine risk factors for the disease. The results indicated that "overnutrition" (a high-fat and high-animal protein diet) was not statistically associated with the disease. As noted in previous studies, age at the first birth was positively related to the disease; those women who gave birth to their first child when they were 35 or more years of age showed a relative risk of 5.0 compared with those giving birth at less than 20 years of age. A past history of both natural abortion and of benign breast disease were significantly associated with the disease. On the whole, the results obtained from this Fukuoka portion of study were in good agreement with those from the Hawaii study during which Japanese and Caucasians in Hawaii were investigated. PMID- 3834331 TI - Breast cancer in Caucasian and Japanese women in Hawaii. AB - This case-control study included 183 Japanese and 161 Caucasian patients with breast cancer and equal numbers of matched hospital and neighborhood controls. The following factors were found to be associated with increased breast cancer risk in both groups of women: family history of breast cancer, history of benign breast disease, early age at menarche, late age at first childbirth, and late menopause. We noted a weak suggestion that the patients ate more saturated fats and oleic acid and took replacement estrogens for a longer period than did the neighborhood, but not hospital, controls. However, none of these differences was statistically significant. PMID- 3834332 TI - Lung cancer in women living in the Pacific Basin area. AB - We compared recent incidence rates for lung cancer in females among several regions in the Pacific Basin, Shanghai, Hong Kong, Miyagi, Hawaii, and Los Angeles, by ethnic group using data from the population-based registry in each area. The rates were high among whites and Hawaiians, intermediate in Chinese, and low in Japanese regardless of area. The risk of lung cancer among females who smoke relative to that in female nonsmokers varied from 1 ethnic group to another as did the proportion of smokers in the populations studied. Most of the interethnic differences in lung cancer incidence rates could be explained by differences in smoking patterns. The estimated annual incidence rate for lung cancer in females after subtraction of the proportion of the incidence due to smoking was 7.5/100,000 population in every ethnic group except the Chinese (15 20/100,000 population). Most of the residual incidences of lung cancer were adenocarcinoma of the lung. PMID- 3834333 TI - Epidemiology of nasopharyngeal carcinoma in Malaysia and Hong Kong. AB - We conducted 2 case-control studies with Malaysian and Hong Kong Chinese and investigated the association between salted fish intake and nasopharyngeal carcinoma (NPC). Both studies show a highly significant association between salted fish intake, especially during childhood, and NPC. Furthermore, from our results we estimate that the majority of NPC cases occurring in the southern Chinese can be attributed to their consumption of this food early in life. PMID- 3834334 TI - Attempts to isolate N-nitroso compounds from Chinese-style salted fish. AB - Various types of salted fish have been collected from Hong Kong and analyzed for volatile nitrosamines and bacterial mutagenicity. Both of these parameters were low in the samples as collected. Exposure of these samples to nitrite yields substantial quantities of nitrosamines and mutagenic activity. PMID- 3834335 TI - Hepatitis B virus and primary liver cancer on Chongming Island, People's Republic of China. AB - Data on potential risk factors for primary liver cancer (PLC), including hepatitis B virus (HBV) infection, contaminated drinking water, maize consumption, and use of tobacco and alcohol were collected from 12,222 males over 40 years of age living on Chongming Island, a high-risk area for PLC. During the first 3 years of follow-up (1980-82), 70 deaths from this disease occurred among study subjects. Preliminary results indicate that HBV carriers were 6.7 times more likely to die of PLC than were noncarriers (P less than .05). No association was found between PLC and alcohol consumption. More data are needed for evaluation of the relationships between cigarette smoking, maize consumption, contaminated drinking water, and PLC on Chongming Island. PMID- 3834336 TI - Relation of analgesic use to renal cancer: population-based findings. AB - A population-based case-control study of renal cancer (495 cases of renal cell cancer, 74 cases of renal pelvis cancer, and 697 controls) was conducted in the Minneapolis-St. Paul 7-county metropolitan area. Information was obtained on a large number of variables, including the use of analgesic drugs. Long-term use (greater than 36 mo) of phenacetin-containing products was associated in both sexes with a twofold increased risk for renal cell cancer. Long-term use of phenacetin- and acetaminophen-containing products was associated with elevated risks of nearly threefold to eightfold for cancer of the renal pelvis. The separate effects of these analgesics could not be adequately assessed because most long-term users took both products. PMID- 3834337 TI - Diet and colon cancer: integration of the descriptive, analytic, and metabolic epidemiology. AB - Case-control studies of diet and colon cancer have produced inconsistent findings. Data from descriptive and metabolic epidemiologic studies suggest that colon carcinogenesis varies by sex-age status, particularly when considered in relation to anatomic subsite. Thus stratification of data analysis by these criteria may elucidate dietary etiology. Consideration should also be given to the limited and nonlinear variation in colon cancer risk likely to exist in relation to the range of dietary "exposure" within Western study populations. In our community-based case-control study of colon cancer, comprising 220 patients and 440 individually matched controls, the dietary data have been analyzed by both tertile and quintile of individual consumption level. For total dietary energy intake, the tertile approach indicates a weak (men) to moderate (women) dose-response relationship; however, the quintile approach revealed in women a fourfold step-up in risk between the lowest and next-to-lowest quintile. For dietary protein, the quintile approach doubled the step-up in risk between the 2 lowest consuming categories for men compared with the tertile approach. Applying this quintile approach to data analyses stratified by sex, age, and colon subsite, we found: 1) In women, the risk of colon cancer for the upper four quintiles of consumption of calories and other major nutrients was greatest at young ages, whereas for men it was greatest at older ages. 2) The diet-associated risks tend to be maximal in the left (distal) colon for men and in the right (proximal) colon for women.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3834338 TI - Case-control study of urinary bladder cancer in metropolitan Nagoya. AB - We conducted a population-based case-control study of patients with bladder cancer and of controls drawn randomly from the general population of Metropolitan Nagoya and interviewed both groups. The incidence rates of bladder cancer were 2.42 and 7.05/100,000 for females and males, respectively. The analysis, based on 293 patients and 589 controls who were frequency matched for age, sex, and residence, provided the following major findings. Age-adjusted relative risks of 1.89 (1.15-3.10) and 3.53 (1.71-7.27) were found in male and female cigarette smokers, respectively. Significant relative risk was also found in males who drank cocoa. Elevated risk with a dose-response relationship was observed among women who used hair dye and who smoke, but this risk was insignificant, with the disappearance of a dose-response relationship, when it was adjusted for smoking. Age- and smoking-adjusted relative risk of coffee drinking was insignificant with no dose-response relationship. Relative risk of artificial sweetener use was below 1 with adjustment for age and smoking. Intake of alcoholic beverages and cola was insignificantly associated. Reduced risk of significance was suggested for the intake of black tea and matcha (powdered green tea) in females and of fruit juice in males. PMID- 3834339 TI - Nutritional status of the high esophageal cancer risk population in Linxian, People's Republic of China: effects of vitamin supplementation. AB - Plasma levels of nutrients in 196 individuals were assayed as part of a study of the feasibility of a nutrition intervention trial in Linxian, a county in North Central China with exceptionally high rates of esophageal cancer. High performance liquid chromatography analyses of samples collected in April 1983 showed low (relative to United States standards) base-line levels for retinol, alpha-tocopherol, and beta- and alpha-carotene. Repeat sampling in August 1983 revealed significantly increased plasma levels of retinol and alpha-tocopherol among those who had in the interim received daily supplementation with multivitamin pills containing the Recommended Dietary Allowance levels of those nutrients but not among those without supplementation. Levels of carotenes, which were not included in the pills, tended to increase regardless of supplementation, consistent with seasonal variations in availability of carotenoid-containing foods. Atomic absorption spectrophotometry analyses showed essentially normal levels of copper and zinc in plasma. Neither was affected by vitamin supplementation (the pills did not contain minerals) nor seasonal variation. The data are generally consistent with prior biochemical surveys in indicating marginal or low status of several nutrients in Linxian and in showing that supplementation with vitamins can effectively raise blood nutrient levels. PMID- 3834340 TI - Religion and cancer in Los Angeles County. AB - The patterns of cancer risk by religion in the large multidenominational population of Los Angeles County were examined with the method of proportional incidence. Risk estimates for individual cancers by religion were screened and those extreme but stable estimates found were reexamined in light of relative socioeconomic class, nativity, and ethnicity. Within Protestant denominations, gradients which can still best be attributed to religious preference were observed for leukemia, stomach, and cervix cancer. Roman Catholics tend to have high risks of stomach and gallbladder and a low risk of prostate cancer, whereas Eastern Orthodox women trade high risk of stomach cancer for low risk of endometrial and lung cancer. The most extreme pattern of risk, that for Jews, is comprised of lowered risk for cervical cancer and for most sites usually associated with smoking, plus consistently higher risk for lymphomas, thyroid cancer, and bladder cancer among males. Like Jews, Seventh-Day Adventists experience high risk for lymphoma and low risk for cervical and respiratory cancers. Risk to Mormons in Los Angeles differs from that of the standard Protestant population in only minor and inconsistent ways. Neither Mormons nor Adventists showed the previously reported deficits of colorectal or breast cancer. Although the method of proportional incidence may be partly responsible for our failure to confirm previous findings, nonreligious cultural or methodologic factors in the original investigations also provide plausible explanations. More generally, associations of the modest magnitude observed between cancer risk and religion in American populations should probably not be attributed to religious life-style, unless extraordinary circumstances permit the exclusion of other determinants. PMID- 3834341 TI - Recent history of China-United States Cooperation in Cancer Research. PMID- 3834342 TI - Risk factors for breast cancer in Tianjin, People's Republic of China. AB - Four hundred fifteen patients with breast cancer who were between 25 and 59 years old were interviewed. They were identified through a breast cancer screening program conducted by the Tianjin Cancer Institute during 1977-80. Controls were women who participated in the screening program but were free of breast cancer. The study confirmed early menarche, late age at first birth, and late menopause as major risk factors for breast cancer. Total duration of lactation was significantly associated with a reduction in its risk among parous women, but this was explained by higher parity among controls. No significant differences were observed between patients and controls in the amount of exposure to chest radiographs or use of hormones. PMID- 3834343 TI - Colorectal cancer in Chinese and Chinese-Americans. AB - Rationale and plans are described for a collaborative case-control study of large bowel cancer among Chinese-Americans in Los Angeles and the San Francisco Bay Area and among Chinese in Zhejiang Province, People's Republic of China. A common protocol and questionnaire will be used during personal interviews of approximately 400 Chinese and 300 Chinese-American patients with histologically confirmed adenocarcinoma of the colon or rectum and 2,100 Chinese and Chinese American controls. Controls will be matched to patients on age, sex, and community of residence. The information requested from subjects will permit testing of hypotheses relating colorectal cancer risk to: dietary factors, including intake of fat (saturated and unsaturated), animal protein, fiber, and vitamins A and E and ascorbic acid; physical activity levels and body mass index; reproductive factors among women; history of bowel disease; and family history of cancer. The information requested of Chinese-American subjects will also permit testing of hypotheses relating cancer risk to such migrant factors as United States versus Chinese nativity, duration of residence in the United States, and Chinese province of ancestry. These factors will be tested for associations with cancers of the colon and rectum separately and with cancers of the large intestine as a whole. We will examine sex and geographic differences in relative risks for etiologic factors, location of tumors within the large bowel, histologic subtype of adenocarcinoma, and frequency of accompanying polyps. PMID- 3834344 TI - Some epidemiologic observations of nasopharyngeal carcinoma in Guangdong, People's Republic of China. AB - Chinese in the province of Guangdong have the highest risk of nasopharyngeal carcinoma (NPC) in China. Within Guangdong, variation in rates among the 3 major dialect groups is threefold. The Cantonese who reside in the central region of Guangdong display the highest risk of NPC. Among the Cantonese, those living on boats have twice the risk of those who live on land. These observations are consistent with earlier studies of southern Chinese residing in Hong Kong and Southeast Asia. PMID- 3834345 TI - A case-control study of esophageal cancer in Linxian, People's Republic of China. AB - A case-control study involving interviews with 1,200 patients with esophageal cancer and 1,200 population-based controls has been initiated in Linxian, a county in North Central China with perhaps the world's highest mortality rates for this tumor. Here we describe the rationale, study methods, and results of a pilot study that established the feasibility of the investigation. PMID- 3834346 TI - Air pollution and lung cancer in Liaoning Province, People's Republic of China. AB - A correlation study linking age-adjusted lung cancer mortality rates with indices of air pollution was conducted as a first step in the investigation of the high rate of lung cancer in Liaoning Province. Mortality rates for this cancer during 1976-78 for males and females were elevated in the large industrial cities with metallurgical processing and machinery manufacturing industries, after smoking was taken into account. However, there was little correlation between measures of total suspended particulates and lung cancer rates across the 10 major cities of the Province. Neighborhood air pollution indices correlated significantly with local commune mortality rates within the largest city, and lung cancer rates were higher near certain point sources of industrial pollution (including a copper zinc smelter). These findings indicate that the atmospheric pollution in this northern Chinese province may contribute to lung cancer risk and that further analytic epidemiologic study in this high-risk area is warranted for evaluation of the role of outdoor and indoor air pollutants. PMID- 3834347 TI - Opportunities for United States-People's Republic of China collaboration in cancer epidemiology. PMID- 3834348 TI - Cancer incidence in Caucasians living in the Pacific Basin. AB - Variations in cancer incidence among whites in 1973-77 in 8 geographic areas of the Pacific Basin were compared. Substantial differences were found for the occurrences of lung cancer, cancer of the corpus uteri, and malignant melanoma. White women living in New Zealand and Australia had the lowest risk of developing lung cancer, whereas white men living in the western United States had the highest risk. Cancer of the corpus uteri occurred more commonly in the western United States than elsewhere in the Pacific Basin. Geographic areas located closest to the equator experienced the highest incidence of malignant melanoma. In all areas, the incidence rates of cancers of the lung and corpus uteri and malignant melanoma increased significantly between 1960-66 and 1973-77; after the mid-1970s, rates of cancer of the corpus uteri declined. The incidence of stomach cancer decreased in all areas. Although cervical cancer decreased in incidence over time for most women, it increased noticeably in young women. The incidence of breast cancer also rose during the 17-year period. In at least 1 geographic area, the observed increases in breast cancer incidence were confined to women under age 40. PMID- 3834349 TI - Cancer incidence in the islands of the Pacific. AB - The South Pacific Commission Cancer Registry has been operational since 1977, and reasonably complete cancer incidence rates are available for New Caledonia, Fiji, Micronesia, the Cook Islands, and Niue. In addition, less complete reporting is available from American Samoa, Papua New Guinea, and French Polynesia. Cancers of the lung, oral cavity, esophagus, liver, and cervix are potentially preventable but prevalent in many Pacific island countries. Unusually low rates of many cancers were observed in Fiji, the most notable being lung and colon-rectum. Thyroid cancer rates are elevated in some but not all female populations. These and other variations in cancer by site are important areas for further research. PMID- 3834350 TI - Cancer incidence in Japanese in Japan, Hawaii, and western United States. AB - We based our systematic review of the cancer incidence rates of 48 anatomic sites of Japanese in Japan (Miyagi, Osaka, and Fukuoka Prefectures) and Japanese and Caucasians in the United States (Hawaii, San Francisco Bay Area, and Los Angeles County) on the cancer incidence data included in volume IV of "Cancer Incidence in Five Continents." Cancer sites were classified into 10 categories according to the trend of cancer incidence among the 3 groups. To evaluate the influences of environmental and racial factors, we used the ratio of cancer incidence in Japanese living in the United States to that of native Japanese, and the ratio of cancer incidence in Caucasians to that of Japanese living in the same areas of the United States. The present study revealed that the risks of cancers of the prostate, corpus uteri, colon, thyroid, breast, ovary, and testis were elevated, whereas those of the stomach, esophagus, and cervix uteri were decreased in the United States. Caucasians were more susceptible to melanoma, cancers of the mouth, lip and vermilion border, tongue, oropharynx, and larynx than were the Japanese, but the Japanese were more susceptible to cancers of the stomach, gallbladder, and liver. The difficulties we encountered in differentiating the influences of environmental factors from those of genetic racial factors are discussed. The necessity for further observations of the life-style (especially dietary habits) and the cancer incidence of Japanese living in the United States and comparisons with those of native Japanese and Caucasians are emphasized. PMID- 3834351 TI - A case-control study of stomach cancer in Shandong Province. AB - Stomach cancer is the leading cause of death from cancer in China. Although the causes of this cancer are unknown, special opportunities exist for the evaluation of etiologic factors in Linqu County in Shandong Province where rates are exceptionally high. We have described here a newly initiated case-control study, which focuses on certain dietary items as risk factors for stomach cancer in Linqu. PMID- 3834352 TI - Cancer incidence among Filipinos in Hawaii and the Philippines. AB - Cancer incidence rates were compared for Filipinos in Hawaii (1978-81) and Manila (1977). Data for Hawaii were from the statewide Hawaii Tumor Registry; those for Manila were from the Central Tumor Registry of the Philippines. In addition, time trends (4-yr intervals) for cancer among Filipinos in Hawaii were examined for the period 1962-81 and compared with corresponding patterns among Caucasians. For most cancer sites, the rates among Filipinos in Hawaii showed expected increases or decreases from the Manila rates. Notable findings included a dramatic increase in thyroid cancer rates among Filipino women in Hawaii (highest of all ethnic groups), a surprising lack of increase in female breast cancer rates in Hawaii, and a lower than expected increase in colon cancer rates in Hawaii. The time trend analyses showed remarkably similar patterns in Filipinos and Caucasians in Hawaii and no suggestion that differences between the 2 populations are decreasing over time. These observations indicate that useful clues to cancer etiology can be found by further study of the Filipino experience in Hawaii. PMID- 3834353 TI - Cancer in Hispanics in Los Angeles County. AB - Using ethnicity of surname, nativity, residential social class, and inferred age at migration to characterize and subdivide Hispanics in Los Angeles, we compared risk ratios and proportional incidence ratios to examine the patterns of occurrence of selected neoplasms within the Hispanic community. Common neoplasms for which Hispanics have high, low, and intermediary risk were examined in detail. Although the patterns expected on the basis of current concepts of etiology were generally found and served to reinforce presumptions about the biologic significance of the risk factors, a number of observations cannot be explained easily with current knowledge. The risks for stomach and bowel cancers do not conform to the mirror-image patterns to be expected on the basis of inverse patterns of dietary acculturation. Incidence of cancer of the breast, in contrast to that of cervix, does not appear to reflect early cultural practice. Consistent details in the patterns of cancers of the bladder, rectum, ovary, prostate, and possibly pancreas imply unrecognized determinants of disease. Gallbladder cancer in Hispanic women is the disease most closely tied to Hispanic origin or culture, or both, but the ethnic pattern in women differs greatly from that in men. PMID- 3834354 TI - The effects of caffeine on psychological functioning. AB - The past few years have witnessed a growing literature on the behavioural, cognitive and performance effects, both beneficial and hazardous, of caffeine ingestion. A brief overview of these studies is provided and methodological difficulties discussed. Disagreement over such factors as the quantity of caffeine required to produce deleterious effects, difficulties obtaining valid measures of caffeine intake from self-reports and differing interpretations of tolerance levels and absorption rates between studies, often prevent the derivation of meaningful results. The need for a rigorous, scientific appraisal of the effects of caffeine on psychological functioning is emphasised. This requires agreement about criteria referred to above, a more valid data base, and in some cases, the adoption of alternative methodology. PMID- 3834355 TI - Raw energy--nutrition of the future? AB - 'Normal' life can be maintained on a diet incapable of producing high level health. Such high levels can, however, be achieved by the consumption of what McCarrison called 'the unsophisticated foods of Nature', when given in their natural state. The implications for contemporary society are reviewed. This nutritional value of foods is traced back to energy and to the two physical laws which govern energy. Schrodinger's examination of this problem highlighted the contrast between the entropy of energy in physical systems and biological order. Schrodinger spoke of neg-entropy, referring to the reversal of entropy in the affairs of living systems. This philosophical paradox is discussed. PMID- 3834356 TI - Nutritional control of heart disease and cancer: are different diets necessary. AB - Man evolved as a wild animal and his nutritional biology was adapted to wild plants and animals. That diets have been modified by trade is illustrated from the author's experience in Uganda where dramatic differences occur in the diets in the North and South of the country. Internationally, the incidence and pattern both of cardiovascular disease and cancer caries with the ecology of the regions. What is seen in miniature in Uganda is to be seen enlarged upon a world scale. In the course of agriculture we have changed the balance of nutrients offered by wild plants and animals. In particular we have substituted storage fat for structural fat whilst also changing our diet in the direction of a high refined carbohydrate food structure. PMID- 3834357 TI - [A method of examining the lymphatic system of the laryngeal mucosa]. PMID- 3834358 TI - [Characteristics of the lymphatic system of the epiglottis in the normal state and in laryngeal cancer]. PMID- 3834359 TI - [Difficult decannulation after cranio-cerebral injuries]. PMID- 3834360 TI - [Results of X-ray treatment of early cancer of the glottis (data from the Radiotherapy Clinic, Warsaw Medical Academy 1960-1976)]. PMID- 3834361 TI - [Laryngeal chondromas]. PMID- 3834362 TI - [Squamous cell carcinoma of the nasal cavity (data from the Institute of Oncology in Cracow)]. PMID- 3834363 TI - [Problem of the obliteration of fistulae of the labyrinthine canal in functional surgery of chronic otitis media]. PMID- 3834364 TI - [Autoantibodies in allergic diseases of the upper respiratory tract]. PMID- 3834365 TI - [Mechanism of shadow hearing]. PMID- 3834366 TI - [Use of uropolin (amidotrezoate sodium) in the treatment of deafness in a child]. PMID- 3834367 TI - [A case of sudden deafness in a 6-year-old boy]. PMID- 3834368 TI - [A case of odontogenic brain abscess]. PMID- 3834369 TI - [Verrucous carcinoma of the larynx]. PMID- 3834370 TI - [Pollen and cytological analysis of nasal secretions of individuals with pollinosis]. PMID- 3834371 TI - [Correlations between grading and presence of blood group isoantigens in papillary urothelial-cell carcinoma of the bladder with low grade malignancy]. PMID- 3834372 TI - [Cytodiagnosis in breast pathology: cyto-histological correlations in 129 cases]. PMID- 3834373 TI - [Urinary cytology in symptomatic subjects: cyto-histological comparison in 124 cases]. PMID- 3834374 TI - [Lymphangioma of the respiratory tract: considerations on 2 cases]. PMID- 3834375 TI - Adenomatoid leiomyoma and papillary cystadenoma of the epididymis. PMID- 3834376 TI - Hereditary enlarged parietal foramina (foramina parietalia permagna). Prenatal diagnosis, evolution and family study. PMID- 3834377 TI - [Bone angiomatoses in children. Apropos of 3 personal cases]. AB - Three observations of skeletal angiomatosis are reported: one diffuse and two focal forms (Gorham's disease). The analysis of these cases and a review of the literature enhance the clinical and radiological presentation of this uncommon disease. The authors point out the interest of indirect lymphoscintigraphy and dwell on the gravity of its course, in spite of therapeutic attempts. PMID- 3834378 TI - [Registry of cancers in children in the regions of Provence, the Alps, Cote d'Azur and Corsica. Setting up and evaluation of the year 1984]. AB - Epidemiology is a promising clinical way for research on cancer. A population based pediatric cancer registry was opened since January 1984 in 2 regions of south-eastern France. Its purpose is to analyse childhood cancer incidence and possible variations. A case-control study on risk factors was set up at the same time. Registration procedures and 1984 data are reported. The observed incidence is 11.86 new cancer cases/10(5) children/year. PMID- 3834379 TI - [Congenital tracheal stenosis associated with aberrant left pulmonary artery. Apropos of a severe form with neonatal disclosure]. AB - The case report is presented of a newborn infant afflicted with extensive congenital tracheal stenosis associated with anomalous left pulmonary artery, proving rapidly fatal. The possibility of tracheal anomaly must be envisaged in the face of any neonatal respiratory distress unexplained by pulmonary parenchymatous pathology. Diagnosis of this complex malformation relies on endoscopy and oesophagogram and tracheo-bronchogram contrasts. PMID- 3834380 TI - [Meningeal hemorrhage, a symptom disclosing spinal tumor in children]. AB - One case of subarachnoid haemorrhage due to a spinal cord tumor, seen in a child, is reported. This exceptional etiology, whose the look is often misleading must be called to mind when meningeal and rachidian syndromes are associated. Ependymoma of cauda equina is the most common tumor. PMID- 3834381 TI - [Thromboangiitis obliterans and distal gangrene in a 5-year-old child]. AB - Distal gangrene associated with arterial hypertension but without systemic manifestations or muco-cutaneous eruptions was noted in a 5 years old child. Gangrene first appeared in toes and then in fingers. Progression in a 7 months period led to bilateral midleg amputation and amputation of several fingers. Angiography revealed complete obliteration of popliteal and humeral arteries by thrombi and histologic examination of amputated material showed organized thrombi with phlebothrombosis and without vasculitis. Biopsies of liver, lung, kidneys and skin were unremarkable and immunofluorescence studies with various antisera were negative. Also no contributing factor or etiologic agents were found, similarities to adult type Buerger's disease are striking. Vasodilators were of no help and bilateral lumbar and cervical sympathectomy could only demarcate the already present gangrene. PMID- 3834382 TI - [Neonatal listeriosis and postnatal contamination. A new case]. AB - Four cases of neonatal listeriosis issued from the same maternity during the period of ten days are reported in this paper. Three newborns suffered from a delayed listeriosis meningitic form with complete recovery. The fourth newborn suffered from early septicemic form and died. This is a new observation of post natal cross infection with listeria monocytogenes in the same maternity. The reported cases remain rare up to now, although this is a classic notion. PMID- 3834383 TI - Eye movements and illusions of alignment. AB - Extraction of the location of a target in the visual periphery is a fundamental visual process which may be manifested both in conscious judgments of location, such as decisions about alignment, and in the processing required to execute an eye movement to a peripheral target. In both cases, location judgement is affected by the neighbouring visual configuration. An experiment is reported in which the amplitude of saccadic eye movements has been measured to study the effect of a configuration consisting of a single 'induction line'. The results demonstrate systematic effects of this line on the size of the saccade which are closely similar to those previously found in an alignment task. PMID- 3834384 TI - Illusory motions induced by rapid displacements of the observer. AB - Some illusory effects of movement are described that are easily observable when the subject is in rapid locomotion (driving a car or travelling on a train) and gazes fixedly at a particular point of the scene. These effects are essentially characterized by deformations and displacements of parts of the environment. It is suggested that the phenomenon responsible for them is the loss of size and position constancy, respectively. Experimental evidence indirectly validates this hypothesis, and a program of studies is now under way to further corroborate it. PMID- 3834385 TI - Visual space as physical geometry. AB - The geometrical incongruence between patterns in visual space and structures and patterns of activity in the visual cortex, long known to investigators, serves as a criterion for evaluating physical theories of visual space. The problem of determining the geometry of the visual world (visual geometry) is compared with that of determining the geometry of the physical world (physical geometry). Theories as to the possible physical locus of visual space, whether in the brain or elsewhere, are reviewed, analyzed, and criticized accordingly. It is concluded that on the basis of congruence alone it would be predicted that visual space is not to be found in the brain, even though it is seemingly linked to it causally, as experimental neurology and neurophysiology demonstrate. Alternative theories as to the nature of visual space are considered, but are also found to be inadequate in explaining visual space in terms acceptable to contemporary science. PMID- 3834386 TI - Poggendorff and Muller-Lyer illusions: common effects. AB - Previous investigations have shown that the magnitude of the Muller-Lyer illusion is a function of the linear and angular dimensions of the figure. If the Muller Lyer and Poggendorff illusions share a common basis, then the magnitude of the Poggendorff illusion should similarly be a function of the analogous configural dimensions. A study is reported in which changes were made in the dimensions of the Poggendorff figure that are analogous to the dimensions of the Muller-Lyer figure: the length of the parallel components (analogous to the wings of the Muller-Lyer figure); the length of the intertransversal extent (analogous to Muller-Lyer shaft length); and the angle formed between the parallel components and the intertransversal extent (analogous to the angle of wing attachment in the Muller-Lyer figure). The relationship between the magnitude of the illusion and the dimensions of the Poggendorff figure was found to be generally in line with previous findings relating to the Muller-Lyer illusion. Adaptation-level theory and the positive-context model accommodate the major findings of the present study. PMID- 3834387 TI - PMF: a stereo correspondence algorithm using a disparity gradient limit. AB - The advantages of solving the stereo correspondence problem by imposing a limit on the magnitude of allowable disparity gradients are examined. It is shown how the imposition of such a limit can provide a suitable balance between the twin requirements of disambiguating power and the ability to deal with a wide range of surfaces. Next, the design of a very simple stereo algorithm called PMF is described. In conjunction with certain other constraints used in many other stereo algorithms, PMF employs a limit on allowable disparity gradients of 1, a value that coincides with that reported for human stereoscopic vision. The excellent performance of PMF is illustrated on a series of natural and artificial stereograms. Finally, the differences between the theoretical justification for the use of disparity gradients for solving the stereo correspondence problems presented in the paper and others that exist in the stereo algorithm literature are discussed. PMID- 3834388 TI - Accumulator and random-walk models of psychophysical discrimination: a counter evaluation. AB - In a recent assessment of models of psychophysical discrimination, Heath criticises the accumulator model for its reliance on computer simulation and qualitative evidence, and contrasts it unfavourably with a modified random-walk model, which yields exact predictions, is susceptible to critical test, and is provided with simple parameter-estimation techniques. A counter-evaluation is presented, in which the approximations employed in the modified random-walk analysis are demonstrated to be seriously inaccurate, the resulting parameter estimates to be artefactually determined, and the proposed test not critical. It is pointed out that Heath's specific application of the model is not legitimate, his data treatment inappropriate, and his hypothesis concerning confidence inconsistent with experimental results. Evidence from adaptive performance changes is presented which shows that the necessary assumptions for quantitative analysis in terms of the modified random-walk model are not satisfied, and that the model can be reconciled with data at the qualitative level only by making it virtually indistinguishable from an accumulator process. A procedure for deriving exact predictions for an accumulator process is outlined. PMID- 3834389 TI - A note on the inconsistency of the substitution model for taste mixtures. PMID- 3834391 TI - An exception to the 90 degrees corner bias. PMID- 3834390 TI - The perception of performance in stress: the utilisation of cognitive facts by nondepressed and depressed students. AB - Three experiments are reported in which expectancies about performance in stressful conditions by nondepressed and depressed nonclinical populations were examined. The first experiment was concerned with estimates of either errors or response rates made in advance, with regard to the likely competence level of a (hypothetical) person allegedly working in conditions of either loud noise, fatigue, sleep loss, social stress, or incentive. Nondepressed subjects as well as depressed subjects provided negative expectancies. The second experiment involved obtaining an estimate of personal competence in conditions where subjects were instructed that personal performance on the task would be required after the estimate had been provided. Nondepressed subjects differed from depressed subjects in that the estimates of the former were less negative in terms of the magnitude of the estimates provided. A third experiment was designed to see whether the negative expectancies about performance in stress exhibited both by nondepressed and by depressed subjects would be used in making allowances for the competence of a typist on the basis of a typescript allegedly produced under high noise conditions. An unexpected effect was that depressed subjects judged the typist more harshly and failed to make allowance for adverse working conditions in the way that nondepressed subjects did. The results are discussed in terms of the implications for understanding cognitive factors in depression. PMID- 3834392 TI - It's all done with mirrors: proof of non-existence. AB - Mirrors can show us to be absent (with minimal cognitive damage) and also can show imaginary lines to be unreal (again with little or no effect on the adjoining percept). The processes that create the subjective lines are immune to the optic information that the lines do not exist. PMID- 3834393 TI - What's up? The Margaret Thatcher illusion revisited. PMID- 3834394 TI - The metric of visual space. PMID- 3834395 TI - Attending to two fingers: two hands are better than one. PMID- 3834396 TI - Mixed-modality psychophysical scaling: inter- and intramodality sequential dependencies as a function of lag. PMID- 3834397 TI - Pigeon discrimination of letters and other forms in texture displays. PMID- 3834398 TI - The development of beliefs about falling objects. PMID- 3834399 TI - Noncategorical identification of rise time. PMID- 3834400 TI - Effect of frequency, timbre, experience, and feedback on musical tuning skills. PMID- 3834401 TI - Improvement in direction discrimination: no role for eye movements. PMID- 3834402 TI - Risk factor and behavioral correlates of willingness to participate in cancer prevention trials. AB - Because of the growing interest in prospective trials of dietary and chemopreventive interventions for cancer, we studied the characteristics of persons likely to participate in such investigations. The study population consisted of a random sample of 576 persons who had previously attended the Prevention-Detection Center at Roswell Park Memorial Institute to receive a cancer screening examination and a risk assessment. Data were collected using a mailed questionnaire. Of the respondents, 77% indicated some degree of interest in participating in a cancer prevention study involving dietary changes, 27% indicated a definite interest and 50% indicated a possible interest. A similar pattern of response was obtained with respect to participation in a cancer prevention study that involves subjects taking medication, such as vitamin supplements. The findings suggest that those who are the most interested in participating in cancer prevention research are more likely to (on average) be younger, better educated, have higher annual family incomes, be regular vitamin users, have greater awareness of the possible link between dietary practices and cancer risk, be more concerned about getting cancer, and be more likely to believe that changes in dietary practices can decrease the cancer risk. These findings may have important implications for the planning and conduct of prospective trials of cancer prophylaxis. PMID- 3834403 TI - Effects of vitamin E on fibroblast fibronectin. AB - Fibronectin is a glycoprotein found mainly on fibroblast cell surfaces. Cultured human skin fibroblasts grow as monolayers in regular linear and whorl-shaped patterns. Exposure to a certain vitamin E analogue, D-alpha-tocopheryl polyethylene-glycol-1000-succinate, induces concentration-dependent morphological and pattern changes. Using indirect immunofluorescence techniques, fibronectin, a cell protein associated with cell structure and intercellular patterns, was identified within the cells and the intercellular spaces. At a low concentration, the vitamin E analogue caused inhibition of the intercellular distribution of fibronectin without changes in intracellular fibronectin or significant disruption of the morphological patterns. At higher concentrations morphological changes ensued. These data suggest that the mechanism of vitamin E-induced morphological and intercellular pattern changes may not be manifested through inhibition of fibronectin deposition or secretion. PMID- 3834404 TI - Changes in food intake and nutritional status in patients treated with radiation therapy for cancer of the larynx and pharynx. AB - Nutritional status and food intake were recorded for 28 patients with cancer of the larynx and 13 patients with cancer of the pharynx. All patients were without distant metastases and received radiotherapy with a curative intent. No patients were nutritionally depleted when treatment began. Treatment did not induce changes in nutritional status or food intake in patients with cancer of the larynx. The mean energy intake was 135% of the basal metabolic rate (BMR), and the protein intake was 1 g/kg/day. Inversely, patients with cancer of the pharynx suffered a mean loss of body weight of 5 kg (p less than .01), which was almost equally divided between fat tissue (-2.2 kg) and fat-free cell mass (-2.6 kg). There were only minor or no changes in serum albumin and serum transferrin. Mean energy intake was 121% of BMR, and the mean protein intake was 0.9 g/kg/day. Neither nutritional support during admission nor dietetic instructions managed to preserve the nutritional status in patients with cancer of the pharynx. Therefore, these patients need a more intensified nutritional therapy, such as tube feeding. PMID- 3834405 TI - [Results of measurements of maximal midexpiratory flow rate in healthy persons]. PMID- 3834406 TI - [Functional state of the respiratory system and the incidence of chronic bronchitis in workers exposed to hazardous occupational conditions]. PMID- 3834407 TI - [Determining total lung capacity (TLC) based on parameters of maximal expiratory flow-volume curves and simple chest measurements]. PMID- 3834408 TI - [A new method of differentiating various types of ventilatory insufficiency]. PMID- 3834409 TI - [Thoracic changes in multiple myeloma and monoclonal gammopathy]. PMID- 3834410 TI - [A case of pneumonia caused by Toxoplasma in a 3 1/2-year-old girl]. PMID- 3834411 TI - Multiple treatment potentiates the anticonvulsive activity of cholecystokinin octapeptides. AB - The dose-response curves for the anticonvulsive activity of sulfated and nonsulfated cholecystokinin octapeptide (CCK-8-SE and CCK-8-NS) against picrotoxin-induced (6 mg/kg SC) seizures were assessed either following or without pretreatment with a single high dose of CCK-8-SE or CCK-8-NS, to examine acute tolerance to the effect after IP injections in mice. As CCK-8-SE or CCK-8 NS pretreatment, a 1.6 mumole/kg dose was injected 2 hr prior to the second injection. No acute tolerance to the anticonvulsive activity was demonstrated, and CCK-8-NS pretreatment significantly potentiated its own anticonvulsive activity. Chronic (8-day) daily treatment with a 0.16 mumole/kg dose of CCK-8-SE or CCK-8-NS antagonized seizures by picrotoxin, presumably in a cumulative manner. To investigate the interactions of CCK octapeptides with other anticonvulsive agents, picrotoxin-induced seizures were antagonized with several doses of diazepam following or without acute, high-dose pretreatment with CCK-8 SE or CCK-8-NS. The two octapeptides only slightly modified the activity of diazepam: CCK-8-SE pretreatment displayed a tendency to antagonize it, while CCK 8-NS pretreatment to potentiate it. The results suggest that multiple treatment with CCK-8 induces sensitization of CCK receptors mediating anticonvulsive activity. PMID- 3834412 TI - The role of arginine vasopressin in alcohol dependence and withdrawal. AB - The development and maintenance of tolerance to the physiological and behavioral effects of repeated exposure to ethanol can be altered markedly by the presence of arginine vasopressin (AVP). In addition, AVP has been implicated in the etiology of convulsions, including those induced by exposure to high ambient temperatures. In light of these findings, experiments were conducted to determine the role, if any, that AVP might play in the pathogenesis of alcohol-withdrawal convulsions. Thirty-two male Long Evans (LE) rats and 32 age-matched male homozygous Brattleboro (DI) rats (genetically deficient in AVP) were exposed to ethanol vapor concentrations adjusted to maintain blood alcohol levels of each rat at 150-350 mg/dl. Following at least 5 days of ethanol exposure, the animals were withdrawn. From 3-24 hr after cessation of ethanol administration, withdrawal severity was assessed by observing the response of each animal to a 60 120 sec period of auditory stimulation. No significant differences were observed in either latency to onset or severity of the convulsions in LE and DI rats upon ethanol withdrawal. Thus, alcohol-withdrawal convulsions, unlike hyperthermia induced convulsions, may be mediated by a neurochemical substrate other than AVP. PMID- 3834413 TI - Identification and primary structural analysis of peptide II, an end-product of precursor processing in cells R3-R14 of Aplysia. AB - Peptide II, which is encoded on a gene for a precursor protein in abdominal ganglion neurons R3-R14, was purified from extracts of abdominal ganglia of Aplysia californica. Native peptide II comigrates with synthetic standards on HPLC under isocratic conditions. Amino acid sequence and composition analyses indicate that the sequence of peptide II is Glu-Ala-Glu-Glu-Pro-Ser-Phe-Met-Thr Arg-Leu, as predicted from the precursor. The molluscan cardioexcitatory peptide Phe-Met-Arg-Phe-amide was also identified in abdominal ganglion extracts by similar means. The large amount of peptide II recovered (100 ng/ganglion), and its location on the precursor between two pairs of basic residues, strongly suggest that the precursor is processed into peptide II and at least two other peptides. Although cells R3-R11 have been postulated to play a role in cardiovascular control, peptide II was without effect at less than or equal to 10(-4) M concentrations on identified abdominal ganglion neurons, the gastroesophageal artery or the heart. The physiological role of peptide II therefore remains to be elucidated. PMID- 3834414 TI - Vasopressin responses to peripheral and central osmotic pulse stimulation. AB - To determine the relative importance of central and peripheral osmoreceptors in the osmotically-induced vasopressin secretion, osmosensitive areas of pentobarbital-anaesthetized rats were exposed for 5 sec to an osmotic pulse (130 mumoles NaCl in 200 microliters). The hepatic portal receptors were stimulated by superfusion of the portal vein, and the central receptors by infusion into one common carotid artery. Portal stimulation was 2.14 +/- 0.25 (mean +/- SEM, 4 groups of 5 rats) more effective than central osmotic pulse stimulation in elevating, within 1 minute, the plasma vasopressin level (measured by RIA). The central stimulus was not effective when introduced into the freely perfused vessel, although the hypothalamic extracellular NaCl concentration rose transiently (6 sec) to 2.6 +/- 0.3 w/v% (mean +/- SEM, n = 6 rats). The results show that brief osmotic pulses preferentially stimulate portal osmoreceptors to cause the release of vasopressin, and suggest that portal osmoreceptors may be involved in the dynamic regulation of plasma osmolality. PMID- 3834415 TI - Reverse-phase separation and electrochemical detection of neuropeptides. AB - The reverse-phase separation of neuropeptides using isocratic conditions is described. Each component of the mobile phase was examined for its ability to influence the separation of complex mixtures of neuropeptides. Manipulation of buffer strength, pH, organic modifier and column type provided sufficient flexibility to resolve closely related neuropeptides. Amperometric detection of oxidizable amino acids in the peptide sequence of a number of endogenous neuropeptides proved suitable for the identification of peptide standards and quantification of neural lobe arginine vasopressin and striatal methionine enkephalin. PMID- 3834416 TI - The effects of neurotensin, naloxone and haloperidol on elements of excessive grooming behavior induced by bombesin. AB - The influence of naloxone, haloperidol and neurotensin was investigated on bombesin-induced excessive grooming in rats. All three drugs reduced the amount of bombesin-induced grooming. Haloperidol induced a general reduction in excessive grooming as induced by bombesin, without changing the composition of grooming behavior, whereas naloxone and neurotensin suppressed bombesin-induced grooming and caused a shift in the distribution of grooming elements. The main suppressive effect of these latter drugs appeared to be on the element scratching. From these data it is suggested that bombesin-induced scratching is mainly displayed by activation of opiate receptor systems, whereas the other elements of bombesin-induced excessive grooming are mainly regulated by dopaminergic systems. PMID- 3834417 TI - Neural disconnection of gut from brain blocks bombesin-induced satiety. AB - Systemically administered bombesin reduces food intake in rats, mice, baboons, and humans. The mechanism of action is unknown. We report here that presumed neural disconnection of the gastrointestinal tract from the brain blocked the reduction of food intake by exogenous bombesin at a test meal in rats. We also found that bombesin increased the postprandial intermeal interval, and that this effect was not blocked by neural disconnection. PMID- 3834418 TI - Blood pressure responses of conscious rats to intravenous administration of enkephalin derivatives (D-ala2 methionine and leucine enkephalinamide, and methionine and leucine enkephalinamide. AB - The present study was designed to determine the blood pressure (BP) responses of conscious rats given intravenous (IV) injections of enkephalin derivatives (D ala2-methionine enkephalinamide, DAMEA; D-ala2-leucine enkephalinamide, DALEA; methionine enkephalinamide, MEA; leucine enkephalinamide, LEA) and the receptor mechanisms mediating the resultant change in BP. IV injection of 1.6-16.0 nmoles of DAMEA or DALEA caused a transient but potent decrease in mean arterial pressure (MAP) and mean heart rate (MHR). LEA and MEA (16.0 nmoles) given IV produced slight pressor responses, which were not associated with concomitant tachycardia whereas 48 nmoles of MEA elicited a hypotensive effect accompanied by a fall in MHR. Pretreatment studies whereby various receptor antagonists (naloxone, diprenorphine, phentolamine, D-L-propranolol or atropine) were given IV 5 min before subsequent IV administration of DAMEA, DALEA, MEA or LEA (16 nmoles) showed that naloxone, diprenorphine and atropine blocked the depressor and bradycardic effects of DALEA and DAMEA. Naloxone and phentolamine suppressed the pressor response of both MEA and LEA (16.0 nmoles) while diprenorphine blocked the rise in MAP to only MEA. The results show that DAMEA and DALEA mediate their depressor actions in conscious rats via a negative chronotropic effect through an interaction of muscarinic cholinergic receptors on the myocardium. It suggested that the pressor response of MEA and LEA may be produced via an alpha-receptor mediated effect on the peripheral vasculature to cause vasoconstriction. PMID- 3834419 TI - Insulin-like growth factor I/somatomedin-C: a rapid isolation procedure with FPLC. AB - Insulin-like growth factor I (IGF I)/somatomedin-C (SM-C) was purified from lyophilized human serum by acid-ethanol extraction. The extract was precipitated with acetone-ethanol. The precipitate was purified by Sephadex G-50 chromatography. The protein peak within a molecular weight range of 5000-10 000 was further purified with FPLC-reversed phase chromatography using a Pep RPC HR 5/5 column (Pharmacia) with a solvent system of acetonitrile (CH3CN) and 0.1% trifluoroacetic acid (TFA) in water. The purification of IGF I was monitored by radioimmunoassay for SM-C. Purity was established by analytical isoelectric focusing and by SDS polyacrylamide gel electrophoresis. Analytical isoelectric focusing showed one single protein band with an apparent pI of 8.3 +/- 0.1. SDS polyacrylamide gel electrophoresis showed also one single protein band with an apparent molecular weight of 7000. Biological activity was demonstrated by measuring the (3H)thymidine incorporation into DNA of cultured arterial smooth muscle cells. PMID- 3834421 TI - Proceedings of the seventh annual meeting of the IUPS (International Union of Physiological Sciences) Commission on Gravitational Physiology. 13-18 October 1985. Niagara Falls, NY, USA. PMID- 3834420 TI - A simple, rapid, high yield isolation and purification procedure for chloroperoxidase isoenzymes. AB - A simple four-step procedure has been developed for isolation of chloroperoxidase from the mold Caldariomyces fumago. Polyethyleneglycol precipitation of the contaminating pigment in the growth medium, followed by chromatography of the soluble enzyme fraction on a QAE-ZetaPrep-250 cartridge and ammonium sulfate precipitation affords isolation of the chloroperoxidase. Extensive dialysis and chromatography on DE-53 cellulose allows the separation and further purification of chloroperoxidase A and B isoenzymes. PMID- 3834422 TI - Effect of calmodulin and auxin transport inhibitors on calcium net uptake along apical corn roots. PMID- 3834423 TI - Red light shifts the locus and rate of gravitropic curvature in etiolated pea epicotyls. PMID- 3834424 TI - The structure and development of the starch sheath in pea epicotyls. PMID- 3834425 TI - An attempt to localize and identify the gravity sensing mechanism of plants. PMID- 3834426 TI - Cytochemical localization of calcium in cap cells of primary roots of Zea mays L. PMID- 3834427 TI - Immunocytochemical localization of calmodulin in pea root caps and plumules and its relevance to hypotheses on gravitropism. PMID- 3834428 TI - The calcium dependence of auxin action in roots. PMID- 3834429 TI - Correlated changes in calmodulin activity and gravitropic sensitivity in roots of maize. PMID- 3834430 TI - Bone loss during simulated weightlessness: is it glucocorticoid mediated? PMID- 3834431 TI - Response of rat hindlimb muscles to 12 hours recovery from tail-cast suspension. PMID- 3834432 TI - Possible mechanism for changes in glycogen metabolism in unloaded soleus muscle. PMID- 3834433 TI - Changes in skeletal muscle properties following hindlimb suspension. PMID- 3834434 TI - Cage-size and gender effects on fatigue in rats. PMID- 3834435 TI - Altered carbohydrate metabolism in the whole body suspended rat. PMID- 3834436 TI - Oxygen consumption during cold exposure at 2.1 G in rats adapted to hypergravic fields. PMID- 3834437 TI - Changes in functional metabolism in the rat central nervous system following spaceflight. PMID- 3834438 TI - Initial experience with a new plethysmograph for zero-G use. PMID- 3834439 TI - Cat vestibular nuclear neuron responses to active head rotations. PMID- 3834440 TI - Morphological evidence of mechanoreceptive gravity perception in a water flea, Daphnia magna. PMID- 3834441 TI - Protein concentration elevations in lungs of mice following sudden, transient cephalad (+Gz) acceleration. PMID- 3834442 TI - Transient dehydration of lungs in tail-suspended rats. PMID- 3834443 TI - Influence of exposure to a prolonged hyperdynamic field on body temperature in the squirrel monkey. PMID- 3834445 TI - Considerations in the design of life sciences research facilities for the Space Station. PMID- 3834444 TI - Changes in muscle protein composition induced by disuse atrophy: analysis by two dimensional electrophoresis. PMID- 3834446 TI - Hypokinezia and space flight reflected on rats stomach. PMID- 3834447 TI - Vivaria requirements for animal life cycle studies on Space Station. PMID- 3834448 TI - Tissue culture apparatus for flight experimentation. PMID- 3834449 TI - Circadian variation of volume and concentration of orthostatically shifted fluid. PMID- 3834450 TI - Skeletal mass change as a function of gravitational loading. PMID- 3834451 TI - Day course of blood and plasma density in relation to other hematological parameters. PMID- 3834452 TI - Reduction of circadian disruption following surgery by ingestion of caffeine in the laboratory rat. PMID- 3834453 TI - Microvascular flow adjustments with postural changes in humans. PMID- 3834454 TI - Space Station life science research facility--the Vivarium/Laboratory. PMID- 3834455 TI - Concepts, strategies and potentials using hypo-G and other features of the space environment for commercialization using higher plants. PMID- 3834456 TI - Life science research on the Space Station. PMID- 3834457 TI - Morphology of human embryonic kidney cells in culture after space flight. PMID- 3834458 TI - Exobiology experiments for Space Station. PMID- 3834459 TI - Rat maintenance in the Research Animal Holding Facility during the flight of Space Lab 3. PMID- 3834460 TI - Electron microprobe analyses of Ca, S, Mg and P distribution in incisors of Spacelab-3 rats. PMID- 3834461 TI - Muscle protein and glycogen responses to recovery from hypogravity and unloading by tail-cast suspension. PMID- 3834462 TI - Hematologic parameters of astrorats flown on SL-3. PMID- 3834463 TI - Microgravity associated changes in pituitary growth hormone (GH) cells prepared from rats flown on Space Lab 3. PMID- 3834464 TI - Homeostasis and biological rhythms in the rat during spaceflight. PMID- 3834465 TI - Early adaptation to altered gravitational environments in the squirrel monkey. PMID- 3834466 TI - The effect of a hyperdynamic environment on the development of the rat retina. PMID- 3834467 TI - Morphological and biochemical changes in soleus and extensor digitorum longus muscles of rats orbited in Spacelab 3. PMID- 3834468 TI - Critical impact and acceleration loading to the head. PMID- 3834469 TI - Reduction of the spermatogonial population in rat testes flown on Space Lab-3. PMID- 3834470 TI - Biochemical and morphological evaluation of the effects of space flight on rat salivary glands. PMID- 3834471 TI - Otoconial morphology in space-flown rats. PMID- 3834472 TI - Morphologic and histochemical studies of bone cells from SL-3 rats. PMID- 3834474 TI - Hepatic enzyme adaptation in rats after space flight. PMID- 3834473 TI - Hepatic enzymes of sphingolipid and glycerolipid biosynthesis in rats from Spacelab 3. PMID- 3834475 TI - Bone maturation in rats flown on the Spacelab-3 mission. PMID- 3834476 TI - Is space sickness a form of motion sickness? PMID- 3834477 TI - Effects of gravity on the fluid balance and distribution in man. PMID- 3834478 TI - Fluid and electrolyte control in simulated and actual spaceflight. PMID- 3834479 TI - Mechanisms for negative water balance during weightlessness: immersion or bed rest? PMID- 3834480 TI - Cardiorespiratory responses to lower body negative pressure and tilt tests after exposure to simulated weightlessness. PMID- 3834481 TI - Investigations of higher plants under weightlessness. PMID- 3834482 TI - Gravity sensing in animal cells. PMID- 3834483 TI - Comparative analysis of hypo - and hypergravity effects on prenatal development of mammals. PMID- 3834484 TI - Vertebrate gravity sensors as dynamic systems. PMID- 3834485 TI - Chronic acceleration and egg production in domestic fowl. PMID- 3834486 TI - Animal models of motion sickness: are nonemetic species an appropriate choice? PMID- 3834487 TI - Effects of non weight bearing on callus formation. PMID- 3834488 TI - Correlated light and electron microscopy of the vasculature of cortical bone in rat femora and tibiae. PMID- 3834490 TI - Are there conditions in which adrenalectomy impedes the atrophying effects of denervation? PMID- 3834489 TI - Effects of gravitational and muscular loading on bone formation in growing rats. PMID- 3834491 TI - G-tolerance and muscle strength training. PMID- 3834492 TI - Modification of the resting oxygen consumption level of biological body and its tissues, during prolonged hypodynamics exposure. PMID- 3834493 TI - Early mammalian development under conditions of reorientation relative to the gravity vector. PMID- 3834494 TI - Growth and differentiation of mammalian embryonic tissues exposed to hypergravity in vivo and in vitro. PMID- 3834495 TI - Simulated hypogravity and synaptogenesis in culture. PMID- 3834496 TI - Early postnatal development of rats gestated during flight of Cosmos 1514. PMID- 3834497 TI - Growth and development of mice and rats conceived and reared at different G intensities during chronic centrifugation. PMID- 3834498 TI - A marsupial model for the investigation of gravitational effects on early development. PMID- 3834499 TI - Morphogenesis and calcification of the statoconia in the chick (Gallus domesticus) embryo: implications for future studies. PMID- 3834500 TI - Fertilization, development and spicule formation in sea urchins under conditions of constant reorientation relative to the gravitation axis. PMID- 3834501 TI - Spaceflight and calcium metabolism. PMID- 3834502 TI - Response of amphibian egg non-yolk cytoplasm to gravity orientation. PMID- 3834503 TI - Amphibian fertilization and development in microgravity. PMID- 3834504 TI - Evidences for changes in sensitivity to auxin and in cell-wall properties during gravitropic bending of dicot stems. PMID- 3834505 TI - Effects of simulated gravity nullification on shoot-inversion release of apical dominance in Pharbitis nil. PMID- 3834506 TI - Gravistimulation-induced changes in current patterns around root caps. PMID- 3834507 TI - [Transcriptional regulation of adenovirus E4 gene]. PMID- 3834508 TI - [Involvement of the 5' end region in the tissue-specific regulation of a chicken delta-crystallin gene]. PMID- 3834509 TI - [Studies on DNA sequence that mediates induction of human interferon-beta gene expression]. PMID- 3834510 TI - [Mechanism of expression of the vitellogenin gene]. PMID- 3834511 TI - [Casein gene]. PMID- 3834512 TI - [Expression of the delta-crystallin genes during the process of transdifferentiation]. PMID- 3834513 TI - Percutaneous needle aspiration lung biopsy. AB - A presentation of over ten years' experience with percutaneous needle aspiration biopsy in about 200 patients is provided with special emphasis given to the technique and to the discussion of indications and contraindications as well as to common problems. PMID- 3834514 TI - Percutaneous lithotripsy of renal calculi. AB - Percutaneous nephrostomy and stone removal was performed 240 times in 84 patients during a five-year period. Surgery was necessary in only two cases; hemorrhage requiring blood transfusion occurred in four. Perforation of the renal pelvis in five patients healed without sequelae. Final control of the nephrostomy was achieved in almost all cases. Indications and technical points regarding percutaneous lithotripsy are discussed. PMID- 3834515 TI - MRI results from investigation of head and neck tumors. AB - A comparative study between MRI and CT was done with particular reference to the head and neck regions. Compared with CT, MRI offered better tissue contrast, vascular visualization without the need for iodinated contrast media, direct coronal scanning, and a special surface coil for high spatial resolution. MRI is a promising modality for this region despite its difficulty in visualizing bone and its slightly poorer spatial resolution. PMID- 3834516 TI - Magnetic resonance imaging of the normal pituitary gland and pituitary adenoma: preliminary experience with a resistive magnet. AB - Magnetic resonance (MR) imaging was performed in fifty normal pituitary glands, ten pituitary microadenomas, and twelve adenomas with extrasellar extension using a 0.15 Tesla resistive magnet. The average height of normal glands was 5.6 +/- 1.2 mm, whereas that of microadenomas was 6.8 +/- 1.0 mm. The superior surface and internal texture of these conditions were well delineated. Adenomas that showed extrasellar extension together with surrounding structures were well demonstrated on sagittal and coronal scans. It can be expected that with further technical developments MR imaging will play an important role in the clinical management of pituitary adenomas. PMID- 3834517 TI - Cystic fibrosis of the pancreas: report of a Japanese autopsy case. AB - Cystic fibrosis of the pancreas is considered to be rare in the Japanese population. Forty-five cases from the Japanese literature (1951-1983) are reviewed and one autopsy case added. The patient was a 17-year-old Japanese male with recurrent episodes of pulmonary infection. His sweat test was positive (sodium 332 mg/l, chloride 316 mg/l). No particular hereditary trait was identified. Autopsy findings showed cystic dilatation of pancreatic ducts and ductules with mucous hypersecretion. Acini of the pancreas were replaced by fibrosis, while islands of Langerhans remained. These findings were compatible with cystic fibrosis of the pancreas (mucoviscidosis). The lungs showed chronic hypertrophic bronchitis and acute obliterating bronchiolitis. Cystic dilatation and hypersecretion were seen in the esophageal glands, Brenner's glands, and enteric glands. Goblet-cell hyperplasia was seen in the enteric glands. Central fatty metamorphosis and focal bile duct proliferation were seen in the liver. No obvious intralobular cholestasis was present. The epithelium of the gall bladder was highly columnar. PMID- 3834518 TI - Sacrococcygeal chordoma: CT appearance after radiotherapy. AB - This report presents the CT findings after radiotherapy in a case of sacrococcygeal chordoma. Observation over a long period following radiotherapy was necessary for this sacrococcygeal chordoma patient because of the slow regression of the tumor. CT was a highly effective tool in observing changes in the tumor. PMID- 3834519 TI - DNA measurements and micronuclei in human rectal carcinoma. AB - It has been recognized that the variability among individual human tumors is tremendous. We investigated DNA content and cell proliferation in 81 patients with rectal carcinoma by cytophotometric methods. Among them, 32 patients showed only diploid cells and 41 patients hyperploid cells, and the former had better prognoses than the latter. The percentage of S cells calculated from the DNA histograms and the number of cells with micronuclei were higher in proliferative tumors. Clinically, probably due to repopulation in the tumor 10 to 15 days after preoperative radiotherapy, the number of S cells increased and local recurrence was found several months after surgical resection in more than a few cases. These data suggest that the biological variability of human tumors is extraordinary and individualization of tumor therapy is greatly indicated. Furthermore, the above parameters may help to obtain indicators for the prognosis and thereby improve therapy. PMID- 3834520 TI - Clinical results with fast neutrons (DT, 14 MeV). AB - In Hamburg, the therapy with DT-neutrons had the best curative effect on highly differentiated tumors. With the standard dose of 15.6 Gy in four weeks with fast neutrons only or--in treating tumors in radiosensitive organs such as brain and intestine--with a photon-neutron schedule, we have seen no necroses in normal tissues. The rate of medium or slight subcutaneous fibroses has been no more than 10%. The local effect on tumors in our pilot study has been better than with megavoltage therapy in invasive thyroid cancer, prostate cancer stage C, soft tissue sarcoma, and rectal carcinoma. The best results have been achieved with neutrons only, but a photon-neutron schedule may be more effective as megavoltage therapy only. With our DT-neutrons we find some indications for better results than with megavoltage therapy if we use sophisticated treatment planning and if we strictly observe the tolerance dose of the different tissues and organs. The therapeutic index of our DT-neutrons is higher than with cyclotron-produced neutrons. PMID- 3834521 TI - Fluoroscopy guided transperineal percutaneous permanent 125iodine implantation of prostate cancer. AB - The transperineal percutaneous template permanent iodine interstitial brachytherapy under "C-arm" fluoroscopic guidance is a simple, easily-learned, accurate and rapid procedure which can be performed without subjecting the patient to celiotomy. We have treated 58 patients by the transperineal percutaneous permanent interstitial brachytherapy. The use of transperineal percutaneous technique with C-arm fluoroscopic guidance improves the symmetry and dosimetry of the implant. This results in reduction of the incidence of chronic radiation-induced complications. In the group of 22 patients who underwent brachytherapy without celiotomy and lymphadenectomy and without adjuvant external beam radiotherapy, there were no major complications. PMID- 3834522 TI - [Automated autoradiographic grain counting of DNA repair in cultured human fibroblasts after ultraviolet irradiation]. AB - Measurement of autoradiographic grains produced by the decay of incorporated radioisotopes is often used for a quantitative assay of the rate of DNA replication and DNA repair in cells or tissues. However, visual grain counting by microscopic observation is time-consuming and tedious process. Recently, Kraemer et al. reported that automated measurement of grains in cultured human cells may be facilitated by using appropriate grain counting instruments. Under their experimental conditions using Kodak NTB-3 emulsion, instrument-determined grain number per nucleus was proportional to visual counts up to 30 grains, and then leveled off at much larger visual counts. The saturation phenomenon was due to counting-loss by the instrument caused by overlapping of neighboring grains. To prevent the counting-loss, we have used in the present study Japanese Sakura NR M2 emulsion which is less sensitive to radiation exposure than Kodak NTB-3, thereby yielding smaller size of grains per radioactive decay. Samples were prepared from cultured skin fibroblasts derived from normal individuals and xeroderma pigmentosum (XP) patients defective in DNA repair. These cells were irradiated with 254 nm UV incubated for 3 h with culture medium containing 3H thymidine, and autoradiograms were made by dipping in Sakura NR-M2 emulsion. The number of grains as well as grain surface area per nucleus was measured by using ARTEK CYTO TALLY MODEL 900 counting instrument, and compared with visual counts. The results showed that, under our optimum condition, the instrument-determined number of grains was directly proportional to visual counts, at least up to 150 grains per nucleus, with a correlation coefficient of 0.971.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3834523 TI - Metabolism of ipriflavone (TC-80) in rats. AB - Metabolic studies of ipriflavone (TC-80) in rats by gas-liquid chromatography mass spectrometry led to the characterization of the following metabolites: the parent compound, 7-hydroxy-3-phenyl-4H-1-benzopyran-4-one, 7-hydroxy-3-(4 hydroxyphenyl)-4H-1-benzopyran-4-one, 3-(4-hydroxyphenyl)-7-isopropoxy-4H-1 benzopyran-4-one, 2-(3-phenyl-4-oxo-4H-1-benzopyran-7-yl)oxypropionic acid, 2-[3 (4-hydroxyphenyl)-4-oxo-4H-1-benzopyran-7-yl]oxypropionic acid and 2-[3-(3 hydroxyphenyl)-4-oxo-4H-1-benzopyran-7-yl]oxypropionic acid. From the metabolites identified, TC-80 was shown to be metabolized primarily by oxidation. In vitro study using tissue slices of rats indicated that the above metabolic changes occurred exclusively in the liver. It was also demonstrated that the compound did not undergo metabolic conversion by gut flora of rats. PMID- 3834524 TI - Disposition of ipriflavone (TC-80) in rats and dogs. AB - Oral 14C-ipriflavone was absorbed by rats to give a maximum plasma 14C level at 1.5 h and a half-life of 5.8 h. In dogs, after po dosing, the plasma 14C peaked at 0.5 h, followed by gradual decline. The plasma of both animals contained mostly metabolites, with small amounts of unchanged ipriflavone. In rats, 14C was distributed widely in tissues, with relatively high concns. in the liver, kidney and gut. Distribution in rat thigh bone of unmetabolized ipriflavone was also demonstrated. 14C-Ipriflavone was eliminated mostly as metabolites within 48 and 72 h, respectively, in rats and dogs. Rats excreted more 14C in urine than in feces, whereas the reverse was noted in dogs. Biliary excretion and reabsorption of 14C were also obvious in both animals. PMID- 3834525 TI - [The determination of 226Ra in environmental samples with zinc sulfide powder]. PMID- 3834526 TI - [Fundamental studies of a squamous cell carcinoma radioimmunoassay kit]. PMID- 3834527 TI - [Evaluation of magnetic FT4 kit for the measurement of serum free thyroxine concentration]. PMID- 3834528 TI - [Chemical analyses by means of nuclear and radiation methods--applications to biology, medicine, pharmaceutical sciences, agriculture, science and engineering- . 2. Particle induced X-ray emission (PIXE) analysis]. PMID- 3834529 TI - [Perna perna (Linnaeus, 1758): bioindicator of marine radioactive pollution]. PMID- 3834530 TI - [Seasonal variation of the secretory activity of male genital accessory glands of the armadillo Dasypus novemcintus Linnaeus, 1758]. PMID- 3834531 TI - The influence of aldosterone on the phytohemagglutinin-induced human lymphocyte blastogenesis. PMID- 3834532 TI - [An aberrant axillary breast]. PMID- 3834533 TI - [The in vitro fertilization program of the Military Hospital]. PMID- 3834534 TI - [Cancer of the uterine cervix: stage 0 and severe dysplasia]. PMID- 3834535 TI - [In vitro progesterone and estradiol production by human corpus luteum]. PMID- 3834536 TI - [Cyto-colpo-histological correlation in patients with cervical cytological smears manifesting infection caused by condyloma virus]. PMID- 3834537 TI - [Ultrastructural observations on the spermatozoa of an asthenospermic patient]. PMID- 3834538 TI - [Microsurgical tubal anastomosis]. PMID- 3834539 TI - [Infected pseudarthroses. How to control on both fronts?]. PMID- 3834540 TI - [Amputation below the fracture site in pseudarthrosis complicated by infection or vascular lesion]. AB - In cases of fractures of the shaft of a bone complicated by non-union, infection and vascular and/or neurological lesions, amputation may be the ultimate possible treatment. In some cases, an amputation at the level of the fracture site would produce too short a stump for a normal prosthesis. The authors consider that, in this type of lesion, it may be wise to preserve some of the distal portion of the bone below the site of the fracture, even in cases of infected non-union. They performed this technique in seven cases, the distal fragment of the bone being covered by an osteomyoplasty, infection being treated by antibiotics. Early rehabilitation was started with immediate weight-bearing in the prosthesis. In all cases, union was obtained secondarily and in five cases infection healed as well. Two still had an intermittent sinus. The authors consider that the infected non-unions healed because of suppression of the weight of the limb. The technique allowed better rehabilitation because of the presence of a sufficiently long stump. PMID- 3834541 TI - [Development of the gravity vector in normal walking. Muscular and kinetic correlations]. AB - The vertical vector P which represents the body weight in a standing subject undergoes variations in the course of walking which merits study. This is the subject of this article. It is based on the numerical findings derived from work published on walking and is concerned with its displacement, the ground contact forces, muscular activity and expenditure of energy. A study using pressure transducers makes it possible to trace the progressive area of the gravity vector in the horizontal plane in the course of walking. At the same time, the progressive position of the centre of gravity in space can be registered and timed. The resulting trace is analogous to that obtained by a study of plantar pressures. The gravity vector is displaced in the course of walking like the clapper of a clock, suspended at the centre of gravity and passing successively in diagonal form in the four sectors of the horizontal plane defined by the axis of the walking and the frontal plane. In this displacement, its value varies steadily and cyclically. The trunk muscles, whose contraction has been studied clinically and by electromyography at the time of the different phases of walking are exactly those which can provide the mechanical compensation necessary for the displacement of the body weight vector. As to the time factor, it seems to show that, for a given subject, there exists, in relation to his weight and the height of the centre of gravity a speed of walking that corresponds to the minimum expenditure of energy. PMID- 3834542 TI - [Surgical treatment of scoliosis of 100 degrees and greater in children and adolescents (neurological and myopathic scoliosis excluded). Apropos of a series of 66 cases]. AB - In a retrospective study the authors had compared the results obtained in two series of identical scoliosis. All were examined after a two year minimal follow up. Group A. There were 31 children operated on between 1966 and 1972. The average initial curve measured 111 degrees, and the average follow-up was eight years. In this group there was no preoperative preparation, and a Harrington rod was accompanied by cancellous grafting. The average correction was 34 degrees. Four paraplegias were seen, three of which recovered. Group B. There were 45 children operated on between 1973 and 1980. The average initial curve was 170 degrees and the average follow-up was 4.5 years. In this group, there was pre operative use of a Halo cast routinely. In 14 children, Harrington rodding was supplemented by anterior fusion to correct associated kyphosis. The posterior Harrington rodding was completed by tibial grafting. The average correction was 47 degrees, without any neurological complications. It was noted that after one year, pulmonary function was not impaired to a greater extent after an anterior fusion than after a purely posterior fusion. Two-thirds of the cases gained considerable cosmetic benefit. PMID- 3834543 TI - [Failure of Dwyer's procedure in internal pes cavus in children. Physiopathological considerations and therapeutic deductions]. AB - The authors have performed 34 Dwyer's calcaneal osteotomies in children with pes cavus confined to the medial arch in non-paralytic lesions (poliomyelitis and spina bifida were excluded). In 12 cases it was associated with osteotomy of the 1st metatarsal or with plantar release. No arthrodeses were performed in these 34 cases. After an average follow-up of five years the results were doubtful: in 24 instances the deformity was the same or worse. In 21 cases a secondary operation was necessary. The authors considered that the Dwyer's procedure corrects only the varus of the heel which is a secondary deformity. They believe that, in pes cavus, there is a dynamic clawing of the toes in the swing phase of gait. This produces secondary deformities. In the sagittal plane there is a synergic or paralytic imbalance at the metatarso-phalangeal level leading to vertical displacement of the 1st metatarsal and deepening of the medial arch. In the frontal plane, this vertical displacement leads to an irreducible pronation of the forefoot with secondary varus of the heel. In the horizontal plane a lateral rotation of the talus results in varus of the calcaneum. PMID- 3834544 TI - [Traumatic hip dislocations and acetabular fractures in children]. AB - This paper concerns 39 children, 15 with dislocation of the hip, 8 with acetabular fracture and 16 in which both lesions occurred together. The three types of lesion each had a different outcome. The results were good in 86 p. 100 of the isolated dislocations treated conservatively. They were good in 75 p. 100 of acetabular fractures, only one of which was operated on. The results were good in 50 p. 100 of cases with both lesions. Five cases were operated on to restore a congruent and adequate acetabulum. The overall rate of complications was 20 p. 100 and were mainly post-traumatic degenerative arthritis (2 cases), destruction of the triradiate cartilage (1 case), necrosis of the femoral head (2 cases due to separation of the femoral epiphysis). Seventy per cent of the patients finally had a satisfactory result. However, the risks of development of a late degenerative arthritis are high. These children should be followed up for a long period of time. PMID- 3834545 TI - [Recent injuries of finger flexor tendons in children]. AB - Fifty children had been treated for recent injuries to the flexor tendons. In them, 98 lesions, of which half were at the palm or the wrist and the other half in areas I or II of the fingers. All the divided tendons were primarily repaired, using a combination of a frame suture and two casting sutures. The results seemed to be better when post-operative mobilisation using Kleinert's technique was used. The overall results were better than those obtained in adults. The indications for secondary tenolysis were infrequent when primary suture was correctly made and spontaneous improvement was noted for up to a year. PMID- 3834546 TI - [Dysplasia epiphysealis hemimelica: an unusual case]. AB - The authors have observed an eleven-year-old boy with an unusual example of dysplasia epiphysealis hemimelica. Initially there was an intra-articular cartilaginous loose body in the knee. A discrepancy in limb length was noted, which corrected spontaneously. After an eight year follow-up, knee destruction was severe despite surgical treatment on three occasions. A tibio-tarsal arthrodesis was also performed. PMID- 3834547 TI - [Lengthening osteotomy of the femoral neck with transposition of the greater trochanter in acquired coxa vara]. AB - The main problem in acquired coxa vara is related to shortening of the femoral neck and upward displacement of the greater trochanter. Using the Wagner technique, the authors have performed an intertrochanteric osteotomy in five adolescents with transfer of the greater trochanter to lengthen the femoral neck. The technique is described. The early results are encouraging. PMID- 3834548 TI - [Ceramics in otology]. PMID- 3834549 TI - [Our experience with ossicular prostheses of Ceravital]. PMID- 3834550 TI - [Total or partial reconstruction of the external auditory canal with Ceravital]. PMID- 3834551 TI - Tympanoplasty with bio-inert and bio-active ceramics. PMID- 3834552 TI - [Use of fibroblast culture in the study of the interface between bone and ceramic]. PMID- 3834553 TI - [Heterografts of calf jugular vein. History and technic]. PMID- 3834554 TI - [Anatomic and functional surgical reconstruction of the middle ear]. PMID- 3834555 TI - [Limitation of auditory evoked potentials for the diagnosis of deafness in children]. PMID- 3834556 TI - [Launois-Bensaude disease. Apropos of 3 cases]. PMID- 3834557 TI - [Tuboplasty using an autograft and the transmastoid approach. Preliminary note]. PMID- 3834558 TI - [Current knowledge and future perspectives on almitrine dimesylate (Vectarion). 8th International Pneumo-Allergology Seminar in Montpellier (21-24 May 1985)]. PMID- 3834559 TI - [Nocturnal hypoxemia of chronic obstructive bronchopathies and almitrine dimesylate]. PMID- 3834560 TI - [Future prospects concerning the clinical application and clinical pharmacology of almitrine dimesylate]. PMID- 3834561 TI - [Abstracts of papers presented at the 6th Congress of Internal Medicine. 24-26 October, 1984, Santiago, Chile]. PMID- 3834562 TI - [Intestinal Campylobacter jejuni infection in Chilean infants]. PMID- 3834563 TI - [Antral, pyloric and intestinal motility in regular and irregular cycles in dogs during fasting]. PMID- 3834564 TI - [Manometric endoscopic study and gastric acid levels in patients with Roux en Y choledochojejunostomy]. PMID- 3834565 TI - [Factors of immediate prognostic value in hospitalized patients with hepatic cirrhosis]. PMID- 3834566 TI - [Emotional factors in the incidence of accidents]. PMID- 3834568 TI - [Medicine and quality of life: memoirs of a hygienist]. PMID- 3834567 TI - [Ethics in present medical practice]. PMID- 3834569 TI - [Can we make an opportune diagnosis of bronchial carcinoma?]. PMID- 3834571 TI - [Psychiatry today. Current trends and perspectives in the treatment of mental diseases]. PMID- 3834570 TI - [Diagnostic problems in bronchogenic cancer]. PMID- 3834572 TI - [The satellite lymph node of surgically-treated epidermoid bronchial cancer. Evaluation and meaning. Apropos of 167 cases]. AB - This study is based on the analysis of the radiological and histological features of the lymph nodes in 167 operated cases of bronchial carcinoma. The conventional evaluation by means of radiography demonstrates the difficulty of accurately diagnosing lymph node involvement; these investigations are simply able to reveal the presence or absence of enlarged lymph nodes without being able to distinguish between neoplastic and purely inflammatory lymphadenopathy. Histological examination demonstrates the presence of hilar and mediastinal node involvement: the first does not influence the survival in contrast with the second which seems to reflect an intense immune response. PMID- 3834573 TI - [Surgical pulmonary biopsy in diffuse interstitial pneumopathies]. AB - On the basis of 81 cases of surgical lung biopsy performed in the course of diffuse interstitial lung disease, the authors report the yield and the tolerance which they observed with this technique in comparison with data from the literature. Like other authors, they obtained an excellent histological yield, as only one case was uninterpretable in this present series. However, they emphasise the "final yield", which consists of a precise aetiological diagnosis, i.e. the exclusion of the diagnosis of diffuse interstitial fibrosis. The analysis of the tolerance of the procedure revealed a higher morbidity and mortality than those generally reported in the literature. PMID- 3834574 TI - [Unilateral atresia of the left pulmonary veins: preoperative angiographic diagnosis in an adult]. AB - The authors report an unusual case of unilateral obstruction of the pulmonary veins in an adult and discuss the elements of the pre-operative diagnosis. They recall the pathophysiological and therapeutic consequences of this disease. PMID- 3834575 TI - [The scimitar sign: a pulmonary vein or systemic artery? Apropos of a case of pure vascular sequestration]. AB - The scimitar sign, characterised by a vertical opacity crossing the medial part of the right diaphragm, is generally attributed to abnormal pulmonary venous return draining into the inferior vena cava. This is not the only situation in which the scimitar sign is observed, which can also be seen in association with systemic anomalies, in particular sequestration. The authors report the case of a young adult in whom the chest x-ray presented the scimitar sign from childhood. This image was related to a pure pulmonary vessel sequestration by a right sub phrenic artery. The authors stress the possibility of a purely arterial origin for the scimitar sign in the absence of any abnormality of pulmonary venous return. PMID- 3834576 TI - [Labrea hepatitis. Review study of hepatic viscerotomies from 1934 to 1940]. PMID- 3834577 TI - [Tetanus antitoxin levels in migrants in transit through Sao Paulo, Brazil]. PMID- 3834578 TI - Viscerocutaneous form of loxoscelism and erythrocyte glucose-6-phosphate deficiency. PMID- 3834579 TI - Selective C3 deficiency due to C3 nephritic factor in an apparently healthy girl. AB - Routine laboratory investigations performed on the serum of an 8-year-old girl examined because of a moderate degree of iron-deficiency anemia showed a markedly reduced C3 level. More detailed complement studies revealed a selective C3 deficiency, as indicated by the almost undetectable C3 concentration tested by both hemolytic and immunochemical assays and by the normal or slightly reduced levels of all the other complement components. The hemolytic activity of the serum was restored by the addition of partially purified C3 component. The isolated C3 deficiency could be attributed to the presence of a C3-cleaving activity in the serum of the propositus. This activity was identified as C3 nephritic factor (C3NeF) since it was heat-stable, was absorbed by Cowan I strain of Staphylococcus aureus and was-eluted in the IgG fraction after DEAE chromatography of the serum. The levels of H and I factors of the alternative pathway in the serum of the propositus and of C3 in the serum samples of her parents and two siblings were found to be within the normal range. The previous clinical history of the girl and the follow-up for a period of approximately 5 years showed that she was apparently healthy and did not reveal clinical and/or laboratory evidence of glomerulonephritis, lipodystrophy or repeated bacterial infections usually associated with the presence of C3NeF in the serum. PMID- 3834580 TI - Circadian rhythms of adenosine deaminase activity in human erythrocytes: a transverse study on young, elderly and senile demented subjects. AB - Adenosine deaminase activity (ADA) was determined around the clock in human plasma from different groups of subjects: presumably clinically healthy women in Minneapolis, USA; healthy medical students, healthy elderly men and women, and mentally ill patients in Paris, France. In addition to analyses of variance, circadian characteristics were estimated individually and summarized by population-mean cosinor for each group. Technical and sampling considerations are documented: the individualized assessment of a circadian rhythm in adenosine deaminase is feasible in 8 out of 11 series from clinically healthy women covering 24h at 20-min intervals. A circadian population rhythm could be determined for the elderly men and women (p less than 0.05) and tentatively (p = 0.053) for the senile demented patients. A difference in circadian group rhythm characteristics found between the healthy elderly subjects and patients with senile dementia deserves further exploration. PMID- 3834581 TI - Philosophy of blind slide reading in toxicologic pathology. PMID- 3834582 TI - Comparative effects of carcinogens on the induction of placental glutathione S transferase-positive liver nodules in a short-term assay and of hepatocellular carcinomas in a long-term assay. AB - The dose-dependent effects of three hepatocarcinogens were investigated by measuring the number and area of glutathione S-transferase placental form (GST-P) positive foci and nodules appearing in the liver under short-term conditions (Experiment I) and evaluating the incidence of hepatocellular carcinoma after long-term chronic administration (Experiment II). For these purposes, three different doses of 2-acetylaminofluorene (2-AAF), 3'-methyl-4-dimethy laminoazobenzene (3'-Me-DAB), and DL-ethionine (ethionine) were given to male F344 rats for 6 weeks after a single injection of diethylnitrosamine (DENA) in Experiment I or for 104 weeks without initiation by DENA in Experiment II. In Experiment I, the induction of GST-P-positive foci and nodules by 2-AAF and 3'-Me DAB was clearly dose-dependent. In contrast, ethionine showed enhancing effects inducing GST-P-positive foci and nodules only in groups given the highest dose level. Similarly, in Experiment II, induction of hepatocellular carcinomas by 2 AAF and 3'-Me-DAB was clearly dose-dependent, whereas liver neoplasms were only induced by the highest dose level of ethionine. These results indicate that degree of induction of GST-P positive foci and nodules in a short-term in vivo test for liver carcinogens corresponds with the incidences of hepatocellular carcinomas revealed in a long-term in vivo assay. PMID- 3834583 TI - Regression of pathologic changes induced by the long-term administration of contraceptive steroids to rodents. AB - The induction of pathologic changes with hormone steroids has been studied in rodents, although comprehensive studies are lacking on the potential reversibility of these lesions. For these purposes, groups of rats were treated with quingestanol acetate and quinestrol, a progestogen-estrogen combination, for 50 weeks and observed for a subsequent 30-week period. Treatment resulted in a significant body weight gain suppression and reduction of food consumption which recovered after withdrawal. Other significant treatment-related effects were hair loss, ataxia due to pituitary enlargement, mammary chain masses with histologic adenocarcinoma, lens opacities, ovarian atrophy with follicular arrest, and uterine atrophic changes with suppurative inflammation throughout 50 weeks. Cessation of treatment did not effect hair loss or lens opacities, while mammary chain masses decreased in size and in incidence; mammary gland tumors showed regressive changes including the disappearance of adenocarcinoma, and the incidence of ataxia diminished together with reduced pituitary weights. Chromophobe cell hyperplasia with decreased eosinophils and acidophils and hemorrhage into the pituitary was observed up to 50 weeks and the tinctorial affinity of basophils and acidophils returned after withdrawal. Ovaries and uteri, which become atrophic and sustained chronic suppurative inflammation in the treatment phase, showed reduction of inflammatory reaction and disappearance of suppuration after withdrawal, and endometrial regeneration occurred with luteal cells seen in the ovaries. These results revealed the regressive characteristics of some of the mammary gland carcinomas as well as steroid induced endocrine and pathologic lesions other than tegumentary and ocular changes in rats receiving high levels of steroids for prolonged periods of time. PMID- 3834584 TI - The pathologic response of the liver and thyroid of the rat to potassium prorenoate (SC-23992). AB - A 3-month dose range finding study in preparation for a 2-yr carcinogenicity study of potassium prorenoate (SC-23992), a steroid with an antihypertensive profile, is reported. The drug was administered by gavage once daily at doses of 10, 30, and 100 mg/kg/day to Charles River CD rats. Treatment was terminated at 13 weeks and 10 randomly selected animals from each treatment group were killed and necropsied. The remaining 10 animals in each dose group, including controls, were maintained for an additional 4 weeks, in order to investigate reversibility of changes, and then were killed and necropsied. Dose-related increases in thyroid-stimulating hormone (TSH) levels were observed in treated animals of both sexes during the dosing period and the changes were statistically significant and correlated with an increased thyroid weight in females at 13 weeks. Dose-related morphologic changes in the thyroid, observed by light and electron microscopy, were compatible with the effects of TSH stimulation. Liver weights, which increased, were dose-related. In females the increase was statistically significant at the high dose at 2, 4, and 13 weeks. In males it was significant at the high dose at 13 weeks. Microsomal enzyme levels were increased in a time- and dose-related manner with higher values in females than in males. The pattern of enzyme induction was of the type exemplified by pregnenolone- 16-alpha carbonitrile. Morphologic changes in the liver showed centrilobular hepatocyte enlargement with smooth endoplasmic reticulum membrane proliferation confirmed by electron microscopy. All positive findings returned to normal after the 4-week treatment-free period. The relationship between the thyroid stimulation to liver enzyme induction is of interest. Evidence is presented here that in the presence of SC-23992, TSH stimulation and liver enzyme induction occurred. The possibility that the liver metabolism stimulates the thyroid T3, T4 elimination with secondary TSH activity is a possible explanation, but on the basis of existing information, direct action by SC-23992 on the thyroid cannot be excluded. PMID- 3834585 TI - Generalized phospholipidosis induced by an amphiphilic cationic psychotropic drug. AB - Numerous amphiphilic cationic drugs cause generalized phospholipidosis in animals; one of these drugs is the Sandoz compound 200-125, a psychotropic agent. During a 6-month toxicity study in Charles River CD rats, a dramatic increase in foamy macrophages was seen in the lungs. A follow-up experiment was done to study the pathologic basis of these changes including a reversibility phase. Generalized phospholipidosis was induced after 4 weeks of 500 mg/kg/day of 200 125 by gavage. Characteristic pulmonary lesions consisted of extensive accumulations of large pale foamy macrophages as well as granular eosinophilic extracellular material. Lipid analyses of lungs showed marked increases in phospholipids (144%) and cholesterol esters (110%) in rats treated with 200-125. Drug metabolism studies employing 14C-labeled 200-125 showed an affinity for the drug to concentrate in the lungs and lymphoreticular system (spleen, lymph nodes) as well as in the adrenals, liver, and kidney. Reversibility of the phospholipidosis was nearly complete 4 weeks after drug withdrawal. The tissue changes were characterized by transmission and scanning electron microscopy. The potential pulmonary toxicity in humans with the amphiphiles is discussed. PMID- 3834586 TI - Intraspinal connections of dorsal column postsynaptic neurons in the cat--a physiological analysis. AB - Dorsal column postsynaptic (DCPS) neurons in the dorsal horn of the spinal cord have been identified by antidromic stimulation and intracellularly recorded in anesthetized cats. In about one-half of the cells, the antidromic stimulus evokes only an antidromic potential. This potential sometimes has an atypical shape due to penetration-induced depolarization. Atypical potentials are converted into typical antidromic spike potentials after intracellular injection of hyperpolarizing current. In the other one-half, the antidromic potentials are followed by postsynaptic activity. Intracellular analysis indicates that this postsynaptic activity is generated largely by activation of the intraspinal collaterals of A-beta primary afferents that are ascending the dorsal columns. Part of this postsynaptic activity has been produced monosynaptically. Polysnaptic responses are also evident; these are thought to be initiated by A beta axons, desending axons from neurons in the dorsal column nuclei, or the local collaterals of the DCPS axons themselves. The results indicate that the DCPS system is nonlemniscal in nature and may be involved in those pain modulation systems that are activated by A-beta afferents. PMID- 3834587 TI - Long-term experience with piroxicam in osteoarthritis. AB - The long-term efficacy and safety of piroxicam 20 mg once daily in the treatment of osteoarthritis was evaluated in 30 patients--eight for three to five years, seven for six years, and 15 for more than seven years--for a total mean duration of six years. More than 93 percent (28/30) reported feeling well at the last visit, while 12 said they were either asymptomatic or had only mild symptoms. Total joint pain scores, total joint swelling and specific functional activity levels improved and remained improved throughout the study period. Side effects were relatively frequent but mostly in the mild to moderate class (159/166) and these were mostly gastrointestinal. Patients preferred remaining on the drug for a mean of six years rather than changing to alternative therapies made available to them. PMID- 3834588 TI - [Responses of the nucleus centrum medianum of the thalamus to stimulation of deep somatic nerves in cats]. PMID- 3834589 TI - [Effect of locus coeruleus stimulation on unit discharge of the hypothalamic arcuate nucleus in rats]. PMID- 3834590 TI - [Effects of stimulation of the rabbit caudate nucleus on units responsive to noxious stimuli in the parafascicular nucleus of the thalamus]. PMID- 3834591 TI - [Analysis of the depressant effect of diazepam on the amplitude of phrenic nerve discharge in rabbits]. PMID- 3834592 TI - [Analysis of efferent discharges of the linguo-salivatory reflex in cats]. PMID- 3834593 TI - [A binding characteristic of neurotoxins from Bungarus fasciatus venom to the acetylcholine receptor]. PMID- 3834594 TI - [Effects of morphine and naloxone on the motility of the gall bladder muscle strip of the guinea pig]. PMID- 3834595 TI - [Effects of soman and morphine on the phrenic and external intercostal nerve discharges of the cat]. PMID- 3834596 TI - [Different orientation effect of visual evoked potential due to different temporal stimulating frequency]. PMID- 3834597 TI - [Cytoprotective effect of vegetable oil on stress-induced gastric mucosal damage in rats]. PMID- 3834598 TI - [Effects of hypoxia on mechanical properties of isolated the cat papillary muscle]. PMID- 3834599 TI - [Effect of peanut oil and oleic acid on indomethacin-induced gastric mucosal damage in rats]. PMID- 3834600 TI - [Effect of intracerebro-ventricular microinjection of pentagastrin on gastrointestinal propulsive motility in the rat]. PMID- 3834601 TI - [Effects of morphine and naloxone on canine pancreatic secretion induced by acidified duodenum]. PMID- 3834602 TI - [Descending influence of the auditory cortex behind the rhinal sulcus (ACBRS) on the electrical discharge of neurons in the medial geniculate body (MGB) of rabbits]. PMID- 3834603 TI - [Comparison of effects of M-cholinergic compounds on M-acetylcholine receptors in the rat cortex, parotid gland and longitudinal muscle from the small intestine of the guinea pig]. PMID- 3834604 TI - [Respiratory related neurons in the septum of the limbic system of the rabbit]. PMID- 3834605 TI - [Respiratory related neurons in the dorsal hippocampus of the limbic system of the rabbit]. PMID- 3834607 TI - Psychosocial stress preceding myocardial infarction. PMID- 3834606 TI - [Effect of the intracerebroventricular injection of naloxone on the vagus-pressor response in rabbits]. PMID- 3834608 TI - Occurrence of nonfermentative gram-negative bacilli in a Malaysian hospital. PMID- 3834609 TI - Antibiotic susceptibilities of Achromobacter xylosoxidans. PMID- 3834610 TI - Obstetric outcome of meconium stained liquor in labour. PMID- 3834611 TI - Klinefelter's syndrome and hypostatic leg ulceration. PMID- 3834612 TI - Primary pulmonary hypertension in systemic lupus erythematosus. PMID- 3834613 TI - Flupenthixol decanoate and fluphenazine decanoate in chronic schizophrenia. PMID- 3834614 TI - Munchausen syndrome: a case report. PMID- 3834615 TI - Supravesical hernia: a case report. PMID- 3834616 TI - Cut-throat--a case report. PMID- 3834617 TI - [Conference on cystic diseases of the kidney. Padua, 15 October 1983]. PMID- 3834618 TI - [Cystic renal diseases in children]. PMID- 3834619 TI - [Cystic nephropathies]. PMID- 3834620 TI - [Genetic counseling in adult-type polycystic disease of the kidney]. PMID- 3834621 TI - [Regular dialysis treatment of chronic uremia caused by polycystic kidney]. PMID- 3834622 TI - [Epidemiologic investigation of the occurrence of polycystic disease of the kidney at dialysis centers of Triveneto]. PMID- 3834623 TI - [Pediatric-type polycystic disease]. PMID- 3834624 TI - [Renal cysts and anemia in the dialysis patient: a significant correlation?]. PMID- 3834625 TI - [Clinical observations on Cacchi-Ricci disease]. PMID- 3834626 TI - [Hemorrhagic complications of acquired cystic disease in the hemodialyzed patient]. PMID- 3834627 TI - [Continuous ambulatory peritoneal dialysis in patients with polycystic nephropathy]. PMID- 3834628 TI - [Hemodialysis problems in patients with polycystic nephropathy]. PMID- 3834629 TI - [Stauffer's syndrome]. PMID- 3834630 TI - [Comparative therapeutic evaluation of 2 quinolone derivatives, norfloxacin and cinoxacin, in complicated infections of the urinary tract]. PMID- 3834631 TI - [Sodium diclofenac in ureteral colic. Comparative double-blind study with placebo]. PMID- 3834632 TI - Telling the diagnosis: implications for social work practice. AB - If families are to provide de-institutionalized psychiatric patients with primary care in the community, it is necessary to provide them with the skills, background and motivation to deal with the multitude of problems that chronic mental patients present. Families do best when they have a sense of cognitive mastery about all aspects of the family member's illness, but not all practitioners are comfortable about discussing or revealing such information. This paper surveys the attitude of social workers, psychologists and psychiatrists as it applies to utilizing the diagnosis in treatment. PMID- 3834633 TI - Social work training for orthodontists. PMID- 3834634 TI - Temporal lobe epilepsy: social and psychological considerations. AB - The diagnosis of temporal lobe epilepsy (TLE) holds significant psychosocial ramifications for the patient and family. TLE is a type of seizure disorder which challenges the usual notions of epilepsy. Patients with TLE may never experience the stereotypical convulsion; rather, TLE seizures are more likely to take the form of changes in behavior and deepened emotionality. The symptoms are confusing and often frightening for the patient, his family and the larger community. This article explores the patient's and the family's reactions to TLE--myths that influence them, the practical and emotional dilemmas that confront them, and the benefits of social work intervention. PMID- 3834635 TI - Counseling women who request sterilization: psychodynamic issues and interventions. AB - With large numbers of women seeking sterilization each year, including over half a million in 1983 alone, the problem of regretted sterilization and efforts to prevent regret have become matters of concern to health care providers. This paper describes a sterilization counseling program designed to reduce the likelihood of regretted sterilization. Discussed are factors which help predict satisfaction or regret following sterilization. A psychodynamic approach to sterilization counseling informed by these factors is described. Case vignettes are included, as is a retrospective analysis of candidates counseled during one year of the program. PMID- 3834636 TI - The Haitian refugee: concerns for health care providers. AB - This paper reports an exploratory study of the situation of Haitian refugees in the U.S., based on extensive interviews and conversations with health care providers around the state of Florida. The study raises issues that are applicable to other disadvantaged subcultures, and illustrates the need for further, more rigorous fact-finding and attention by health care providers. Suggestions for social workers working in cross-cultural settings are also discussed. PMID- 3834637 TI - Normalization and boarding homes: an examination of paradoxes. AB - Boarding homes have emerged throughout the nation as places where many deinstitutionalized psychiatric patients, and others, reside. They represent one type of congregate living arrangement which is expected to facilitate social policy goals of enabling chronically mentally ill people to live in the most appropriate, least restrictive environment possible. This paper presents a study of ten boarding homes in New Jersey which suggests that instead of being empowered as consumers, residents have become commodities; instead of gaining additional freedoms, deinstitutionalized persons have been abandoned. The paper also presents problematic issues concerning the provision of treatment and rehabilitation services to boarding home residents. PMID- 3834639 TI - Physiologic adaptations of marine animals. PMID- 3834638 TI - The "new young chronic" psychiatric patient: a study in Vancouver. AB - A group of Vancouver B.C. schizophrenic patients were studied to see if the younger subjects possessed the characteristics of the "new young chronic" patient described in the literature. Information on a number of quantitative measures of community functioning was gathered from the clinical files of patients who were attending community mental health teams. The younger subjects possessed many of the same features of the "new young chronic" described by other workers. This was a group with a high level of instability, as reflected in high rehospitalization rates, a greater need for clinical services, an earlier initial contact with the psychiatric system, lower marriage rates, lower employment rates and greater mobility than the older subjects. Because age accounted for so much variability within the sample, the young patients may be regarded as a distinct sub-group. The limitations and implications of the study are discussed. There may be a "lack of fit" between patient needs and the services of the mental health delivery system. PMID- 3834640 TI - [The veterinarian in the bridge between human and animal]. PMID- 3834641 TI - [Borna virus infection (Borna disease) in naturally and experimentally infected animals: its significance for research and practice]. AB - In this survey article on Borna Disease-many years after the review of Zwick (1939)-again a modern comprehensive summary of "Borna Disease virus infection" is given. The infection occurs in horses and sheep, furthermore, in laboratory animal species inoculated experimentally; its clinical, virological and neuropathological features have been described in numerous presentations. Clinical symptoms in naturally and experimentally infected animals are characterized by initial alterations in the sensorium. The neurological symptomatology of the disease (disturbances in coordination, motor, sensory and vegetative symptoms) reflect the presumed localisation of the virus in various brain areas and the course of the disease supports the assumption of intraneural spread of the agent. In horses the incidence is highest during spring. Experimental infections show an exceptionally broad spectrum of infectible animals extending from higher mammals to birds. Our investigations make it clear that we have to differentiate between infections followed by disease (e.g. horse, rabbit, older rat) and persistent infections without overt clinical symptoms (mouse, chicken). Persistent infections are sometimes associated with fine alterations in behaviour (tree shrew) or decreased learning ability (mice). Borna Disease virus, which has not been characterized up to now, is known to grow without any cytopathic effect in tissue cultures. All tested cell lines (including those from man) could be infected. The investigations indicate that Borna Disease virus comprises an enveloped RNS-containing agent. The infection induces the production of specific antigens such as a complex known as the soluble antigen, and a 14500 dalton protein. Under natural conditions and in experimentally infected animals antibodies are produced against such soluble proteins and determinants involved in neutralization of the virus. In the central nervous system (CNS) a local immune response accompanied by the production of oligoclonal immunoglobulins is demonstrable. Besides the humoral reaction it was possible to study the influence of cellular defence mechanisms on the disease process in monkeys, rats and rabbits. Histopathologically, Borna Disease is characterized by a non-purulent inflammation of the brain and the spinal cord. Most alterations are found in the grey matter, mainly in the Ammon's horn, olfactory lobe, caudate nucleus, thalamus, lamina quadrigemina and in he cerebellar nuclei. The perivascular infiltrations, consisting of lymphocytes, histiocytes and plasma cells are most conspicuous. Occasionally, degenerative alterations are observed in ganglion cells.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3834642 TI - [Toxicologic evaluation of nitrofuran derivatives]. AB - The most important side effects of numerous nitrofuran derivatives are their mutagenicity and carcinogenicity. They are due to metabolites of this group of substances in the microbial and animal metabolism. The mutagenic or carcinogenic metabolites are either excreted or covalently bound in the animal organism and may then form persistent residues in the slaughtered animal. If active at all, such residues are toxicologically less active than free metabolites. To determine their bioavailability and to exclude any risk to the consumer, their relay toxicity should be tested using suitable experimental animals. PMID- 3834643 TI - [Domestication and its sequelae]. AB - The domestication of the dog took place in the late Glacial. Its earliest record comes from Oberkassel near Bonn and its age is some 14000 years B.C. On the other side the domestication of the farm animals began about 10000 years ago, during the so-called Neolithic Revolution, when man's way of life changed basicly from the hunter-and gatherer-culture to agriculture and animal husbandry. This change took place in the valleys and on the slopes of the mountains surrounding the basin of the Euphrat and Tigris rivers which is called the Fertile Crescent. Sheep and goat were succeeded by pig and cattle. Immediately after the transition to domestication with protection by human being taking the place of natural selection the livestock animals and the dog underwent a decrease in size. This reduction in size is one of the most important criteria for distinguishing prehistoric domestic livestock from their wild forms. In high developed cultures domestication resulted in a hardly imaginable morphological and physiological extension of variability, in a richness of forms not to be guessed by the whole potential of the corresponding ancestors. But all these rich appearing forms were due to intraspecific procedures. They don't create new species. By the way of the increasing influence of man and its domestic animals on the environment the procedure of domestication is more and more shifted in the foreground and increasingly intervenes with the interests of wild life. PMID- 3834644 TI - [The rumen acidosis complex--recent knowledge and experiences (1). A review]. AB - By "Rumen acidosis" until recently only the acute indigestion with intoxication caused by excessive production of lactic acid was understood. Meanwhile, however, it has become evident that further pathologic changes can take place in the acid base status of the rumen contents which may also be referred to as "Rumen acidosis". Basing on new literature and own experiences the paper gives a review of that "Rumen acidosis complex": Fundamentals of the regulation of pH in the rumen; chronic latent rumen acidosis (hyper-and parakeratosis, chronic hyperplastic rumenitis, rumenitis-liver abscess complex, hyperlipodeposition, low milk fat syndrome, atypical ketosis, chronic laminitis, cerebrocortical necrosis, acid-base metabolism); acute lactic acidosis (etiology, pathogenesis, therapy, prophylaxis). PMID- 3834645 TI - [Histomoniasis in pullet stock and its effect on later laying performance]. AB - In a 17 1/2 weeks old pullet stock typhlohepatitis was diagnosed on the occasion of a stock examination by the poultry health service. Liver and gut of randomly selected pullets showed gross and histologic alterations as known in cases of typhlohepatitis in turkeys. Histomonads could be shown using both the PAS reaction according to McManus and the silverstaining according to Grocott. In the following controls of the herd macroscopic visible alterations of the liver could not be seen, but some of the animals still exhibited gross lesions in the ceca. The course of the development of the herd from point-of-lay to the 9th month of laying period is described. PMID- 3834646 TI - [Pharmacologic principles in the treatment of epilepsy in the dog and cat]. AB - The pharmacokinetics of antiepileptic drugs used for the treatment of human epilepsies is reviewed for dogs and cats. In dogs, especially phenobarbital and primidone must be regarded as useful drugs for chronic treatment on account of their elimination rate and bioavailability. Phenytoin, carbamazepine, valproic acid and benzodiazepines are eliminated so rapidly that a therapeutic value cannot be expected. In cats, phenytoin, phenobarbital, valproic acid and diazepam must be regarded as suited for chronic treatment, but there is a definite lack of clinical experience. Phenobarbital and primidone are useful for treatment of clonic-tonic generalized seizures (grand mal) in dogs. The effect of primidone depends mostly on its metabolite phenobarbital. Since primidone, given in high dosage for longer periods of time, gives rise to liver damage, phenobarbital is regarded as the drug of first choice. A status epilepticus may be treated by i.v. injection of diazepam, clonazepam, phenytoin or lidocaine. In cats with grand mal, treatment with daily doses of about 1 mg/kg diazepam may be tried. It proved effective for longer time periods without development of tolerance. There is no reliable clinical experience with other drugs in this species. PMID- 3834647 TI - [Internal medicine roentgen diagnosis in the dog (1)]. AB - Many veterinarians use radiography mainly as a diagnostic aid in surgical cases. However, internal diseases are at least as important an indication for radiography. For the evaluation of internal radiographs the veterinarian should have extremely good knowledge about the normal structures as well as the abnormal patterns which may be seen in diseases. Some important points for the evaluation of thoracic radiographs are given. PMID- 3834648 TI - [Determination of the urea content of milk in general practice]. AB - To determine the urea in milk and thus to get information on the feeding regimen, a method using colour stripes was developped for the extension service in Bavaria. The quantitative results are fairly exact and available within four minutes comparing the colour changes of the stripe with a four-colour-scale. The scale comprises a range from 15 to more than 40 mg urea nitrogen per 100 ml of milk. The resulting colour as a rule lies between two colour shadings. Udder diseases give uncorrect results. The pH values of the milk samples should be situated between 6.6 and 6.9. This test meets the requirements of the extension service in most cases. Thus disturbances of metabolism caused by feeding can be corrected without problems and immediately. The status of lactation seems to have no influence. Most important in this respect are a feed composition adapted to ruminants and a correct ratio between intake of energy and protein. PMID- 3834649 TI - Pathogenesis of aplastic anemia. AB - Several assays were used to study myelopoiesis in 10 patients with aplastic anemia: the soft agar colony assay for granulocyte-monocyte progenitors; colony forming assay after removal of T lymphocytes; coculture of normal marrow with lymphocytes from normal individuals and patients; coculture of normal marrow with bone marrow fibroblasts from normal subjects and patients in the presence or absence of colony-stimulating factor. All patient assays revealed low colony formation. In two patients, colony formation by normal marrow cells in coculture with lymphocytes was suppressed with a colony count increase following T lymphocyte removal from marrow. Suppressor cells may have caused the aplasia in these patients. Most of the fibroblasts from normal individuals enhanced granulopoiesis in the absence of the colony-stimulating factor, while those from all patients failed to do so. When the colony-stimulating factor was present in the cultures, the degree of suppression of colony formation by fibroblasts derived from the patients was far greater than that by those from the healthy subjects. These results indicate that most aplastic anemias arise from defects of the stem cells and the bone marrow fibroblasts which hold major responsibilities in creating a microenvironment inductive to hematopoiesis. PMID- 3834650 TI - Bile acid metabolism in partially hepatectomized rats. AB - The bile flow and the bile acid secretion, calculated on liver weight basis, increased 12 H and 24 H after 60-70% hepatectomy and returned to the initial levels thereafter. The biliary phospholipid secretion much more increased than bile acids, but the cholesterol secretion decreased. Bile acid composition changed with an increase of the cholic acid group and a decrease of the chenodeoxycholic acid group in both bile and feces. These changes almost disappeared on Day 14. The pool size of bile acid decreased maximally on Day 4 to about 40% of the initial, but the distribution of bile acids in the enterohepatic circulation was not changed. The fecal cholesterol and coprostanol markedly decreased on Day 2 but gradually returned to the initial levels according to the recovery of diet intake. The fecal bile acids decreased on Day 2, increased on Day 4, and returned to the normal range after Day 7. In conclusion, the regenerating liver secretes more bile, bile acids and phospholipids, and less cholesterol than the normal liver. Cholic acid predominates in the bile acids. These changes restored to the initial levels by about one week after the operation. PMID- 3834651 TI - Minor and trace sterols in marine invertebrates 53 (1): Further novel marine sterols resulting from triple and quadruple biomethylation of the cholesterol side-chain. AB - The isolation and structure elucidation of nine new trace sterols with highly branched side chains from a Pseudaxinyssa species from the Australian Great Barrier Reef are described. PMID- 3834652 TI - Structure determination of 3 beta, 17-dihydroxy-17 alpha-pregn-5-ene-20-one. AB - The title compound was synthesized as part of an effort to determine the identity of an abnormal steroid metabolite present in the urine of a patient exhibiting pronounced gynecomastia. The X-ray investigation of the synthesized compound showed that the 20-carbonyl of the 17 alpha oriented side chain lies under the D ring, and does not participate in hydrogen bonding in the crystal lattice. This conformation appears to be stable and sufficiently shielded that it is unlikely to make a major contribution to possible protein interactions. PMID- 3834653 TI - Structure and progestational activity of 13-substituted-18-norpregn-4-ene-3, 20 diones, a pilot study. AB - 13-Ethyl-18-norpregn-4-ene-3, 20-dione (7) and 13-acetyl-18-norpregn-4-ene-3, 20 dione (4) were synthesized and tested in the s.c. Clauberg assay. The potencies of these compounds (1X and 1/3 X progesterone, respectively) are compared with those reported for 13-vinyl- and 13-cyanomethyl-18-norpregn-4-ene-3, 20-dione. A comparable activity (1/3 X progesterone) was found for 13-acetyl-18-norpregn-4-en 3-one (10) which lacks the 20-carbonyl group. PMID- 3834654 TI - The preparation of estradiol-17 beta sulfates with triethylamine-sulfur trioxide. AB - Reaction of estradiol-17 beta with triethylamine-sulfur trioxide in pyridine gives exclusively monosulfation at the C17-hydroxyl group with the preparation of 17 beta-sulfooxyestra-1,3,5(10)-trien-3-ol triethylammonium salt (V). The structural assignment suggested by spectroscopic measurements was confirmed by synthetic studies. (Formula: see text) A synthesis of 3-sulfooxyestra-1,3,5(10) trien-17 beta-ol triethylammonium salt (II) has been accomplished based on the preparation of 17 beta-formyloxyestra-1,3,5(10)-trien-3-ol (XIII). Fusion of the 3-sulfate triethylammonium salt II gives rise to the 17-sulfate triethylamine salt V. The preparation of estradiol-17 beta disulfate has also been achieved. PMID- 3834656 TI - Testosterone 5 alpha-reductase in discrete hypothalamic nuclear areas in the rat: effect of castration. AB - The conversion of testosterone into 5 alpha-dihydrotestosterone (DHT) has been studied in different hypothalamic nuclear areas and in the superficial layers of the cerebral cortex of normal and castrated male rats. The tissue fragments utilized in each incubation have been punched from frozen brain sections utilizing calibrated needles. Castration has been performed 12 (short term) and 180 (long term) days before sacrifice. The nuclear areas studied include: the medial preoptic nucleus (MPN), the lateral preoptic nucleus (LPN), the anterior hypothalamic nucleus (AHN), the lateral hypothalamic nucleus (LHN), the posterior hypothalamic nucleus (PHN), the nucleus ventromedialis (HVM), the arcuate nucleus (AR), the median eminence (ME), the nucleus paraventricularis (HPV), the supraoptic nucleus (SO) and the suprachiasmatic nucleus (SC). The possible effect of castration on the 5 alpha-reductase, were assessed in the MPN,LPN,AHN,LHN,PHN and in the cerebral cortex. The results indicate that, in the male rat: 1) the lateral preoptic(LPN) and the lateral hypothalamic nuclei(LHN) possess a 5 alpha reductase activity higher than that present in the cerebral cortex and in the other hypothalamic nuclei considered; 2)the suprachiasmatic nucleus (SC) apparently possesses a testosterone metabolizing activity lower than that found in any other nervous structures studied so far; 3) castration does not seem to influence the 5 alpha-reductase activity either in the hypothalamic nuclear structures considered or in the cerebral cortex. PMID- 3834655 TI - A fusion method for the preparation of steroid sulfates. AB - A method for the preparation of steroid triethylammonium sulfates is outlined which involves the fusion of triethylamine-sulfur trioxide and steroids. Experimental details are presented which define the process as a thermal equilibrium resulting in the preferential sulfation of aliphatic hydroxyl groups. Sulfation of an aromatic hydroxyl group can be achieved in the absence of an aliphatic hydroxyl group. With excess reagent both types of hydroxyl groups in the same molecule can be sulfated. PMID- 3834658 TI - Testosterone metabolism in the uropygial gland of the quail. AB - The metabolism of testosterone in the uropygial gland of the quail principally results in the production of 17 alpha, 5 beta derivatives. Moreover, an unusually small amount of testosterone is converted to 5 alpha-dihydrotestosterone. These results question the role played by intracellular 5 alpha-reduction in the response of the gland to testosterone stimulation. PMID- 3834657 TI - Novel silylated steroids as aromatase inhibitors. AB - Androst-4-en-3-one analogs incorporating a trimethylsilyl or a trimethylsilylmethyl group at C-1, C-2 or C-19 were prepared and evaluated as inhibitors of aromatase. Only 10-[1-hydroxy-2-(trimethylsilyl)ethyl]estr-4-ene 3,17-dione inhibited human placental aromatase. Enzyme kinetic analysis revealed competitive inhibition [apparent dissociation constant (Ki) of 562 +/- 12 nM] associated with marginal time-dependent inhibition. PMID- 3834659 TI - Stereoselective hydrolysis of 16 alpha-halo-17-keto steroids and long-range substitution effects on the hydrolysis of 16 alpha-bromo-17-ketones and 2 alpha bromo-3-ketones. AB - Epimerizations of 16 alpha-chloro- (1a), bromo- (1b), and iodo-3 beta-hydroxy-5 androsten-17-one (1c) by a brief treatment with 0.2 equiv NaOH in aqueous pyridine reached equilibrium between 16 alpha- and 16 beta-halo ketones. 16 alpha /16 beta-Halo ketone ratios at equilibrium were 1.5 for Cl, 1.25 for Br, and 1.0 for I. Kinetic analysis showed that compounds 1a-c were stereoselectively converted to the corresponding 16 alpha-hydroxy derivative 3 by an SN2 mechanism, in which the order of the apparent reactivity was Br greater than I greater than Cl. The hydrolysis of a number of 16 alpha-bromo-17-ketones and 2 alpha-bromo-3 ketones was carried out. The yields of the corresponding alcohols were found to depend on remote structural features in the steroids. PMID- 3834660 TI - Metabolism of beta-muricholic acid in man. AB - Labeled beta-muricholic acid was obtained from germfree rats given [24-14C] chenodeoxycholic acid. It was crystallized with the same unlabeled bile acid extracted from germfree rat pooled biles. Five patients fitted with a T-tube after cholecystectomy were given orally 100 mg of the bile acid. Metabolites of beta-muricholic acid in bile, urine and feces were studied. Glyco- and tauro-beta muricholic acid were the only metabolites detected in bile. The urinary bile acid pattern was complex and included free, glyco- and sulfoconjugated beta-muricholic acid, but no glucuronide was observed. Analysis of fecal bile acid showed very few metabolites: the 3 beta-epimer was identified; the 6 beta- and 7 beta hydroxyls were apparently not transformed by human intestinal microflora. PMID- 3834661 TI - Altered cholesterol ester proportions in embryonic tissues of dystrophic chicken. AB - The concentrations of cholesterol esters in tissues of dystrophic chicken embryos are altered from normal. These changes are accompanied by significant changes in the proportions of the esterified fatty acids (the fatty acid profile). In serum and pectoral muscles there is a shift to a higher proportion of unsaturated fatty acids (in particular 18:1). Thigh muscle esters are little changed and in liver and brain the proportion of unsaturated fatty acids decreases. PMID- 3834662 TI - Size isomers of testosterone-estradiol-binding globulin exist in the plasma of individual men and women. AB - We isolated testosterone-estradiol-binding globulin TeBG rapidly and in high yield from pooled pregnancy plasma. It showed two bands on sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS PAGE). Both bands stained with three different monoclonal antibodies to TeBG, thus demonstrating their immunological similarity. Freshly drawn, individual sera, from men, women, and pregnant patients were submitted to microaffinity chromatography, a procedure which partially purifies TeBG in approximately 4 hr. The partially purified plasma was submitted to SDS PAGE, followed by immunoblotting. The blotted TeBG exhibited the same two bands seen in the isolated, purified protein. The size heterogeneity observed in TeBG purified to: proteolysis occurring during isolation; a peculiarity of pregnancy plasma; or heterogeneity attendant upon the use of pooled plasma for isolation. PMID- 3834663 TI - Contraceptive use, amenorrhea, and breastfeeding in postpartum women. AB - Data from a 1981-1982 survey of infant feeding practices in four developing countries are used to analyze the relationship of amenorrhea, lactation, and time since childbirth with contraceptive use. The relationship was first explored using contingency table analysis. Logistic regression analysis was then performed to control for the effects of background variables. Models were tested separately for oral contraceptive users and users of other methods. Analysis showed a strong, independent, and consistent negative relationship between amenorrhea and contraceptive use. Women who were less than four months postpartum were also less likely to use contraceptives. The strength of the association with amenorrhea outweighed all other variables, including demographic correlates of contraceptive use. A negative relationship between breastfeeding and contraceptive use was found only for users of oral contraceptives. It is possible that women in the immediate postpartum period, especially those who are lactating and amenorrheic, are not as highly motivated to use contraception as had been supposed. PMID- 3834664 TI - A comparison of 1970 and 1980 survey findings on family planning in India. AB - This report compares the findings of two national sample surveys and highlights changes in the level of knowledge, attitude, and practice of family planning among Indian couples during 1970-1980. No significant change in desired family size during this period is indicated, but awareness about various contraceptives increased and more people had a favorable attitude toward family planning by 1980. However, about 45 percent of all couples who participated in the 1980 survey were unfamiliar with sterilization as a family planning method. About 60 percent did not know how to use condoms. The corresponding percentages for IUDs and the pill were even higher--about 80 percent in each case. Nevertheless, use of modern contraceptives increased from 10 percent in 1970 to 28 percent in 1980. The proportion of couples depending on traditional methods, primarily rhythm, was substantial and increased from 4 percent in 1970 to 7 percent in 1980. Sterilization remained the most popular modern method, followed by condoms. It was also found that current contraceptive users belonged to a relatively better socioeconomic group than those couples who did not want any additional children yet were not practicing contraception, characterized by a higher literacy level, more exposure to mass media, and better communication between spouses. PMID- 3834665 TI - Effects of women's education on postpartum practices and fertility in urban Nigeria. AB - This study examines the influence of women's education on postpartum practices and fertility in Ilorin, a Nigerian urban community. Using life-table survival analysis to estimate breastfeeding and abstinence durations and the Cox Proportional Hazards Model to estimate relative risk of weaning and terminating abstinence, women's education was found to have a strong negative relationship with breastfeeding and postpartum abstinence. The use of contraception was low in this community and marital fertility for educated women was higher than for illiterate women. Policy implications of the findings and recommendations are discussed. PMID- 3834666 TI - Factors influencing the use of traditional versus modern family planning methods in Bas Zaire. AB - Findings from a baseline survey conducted prior to the initiation of organized family planning efforts in one urban and one rural area of Bas Zaire reveal the widespread use of traditional methods and a surprisingly high level of knowledge of modern contraceptives. However, in the absence of a delivery system, use of the latter was extremely limited (4-5 percent of currently married women). The data reflect a deep-seated motivation for birth spacing, which is achieved primarily through withdrawal and abstinence. Of the variables tested as possible correlates, only economic status was related to use of both traditional and modern methods in the same direction. Use of a traditional method was largely determined by age of the youngest child and breastfeeding status. By contrast, use of a modern method was highest among women over 30 with higher levels of education and parity, who were not currently breastfeeding. PMID- 3834667 TI - A comparison of census and family planning program data on contraceptive prevalence, Indonesia. AB - Indonesian family planning (FP) service statistics indicate that three out of five couples of childbearing age nationwide are now using modern contraception provided by the FP program. The 1980 Indonesian Census provided a unique opportunity to cross-check the FP program's contraceptive prevalence figures for every province. The results of that comparison indicate considerable variation, particularly in Java, between the FP program estimates of numbers of current users and the census estimates. Possible explanations for these differences are sought in the FP program approach to estimation of prevalence levels from acceptor data, and by examining the possibility of census underestimation of prevalence levels. PMID- 3834668 TI - [Duodenitis]. PMID- 3834669 TI - [Results of the surgical treatment of vesico-ureteral reflux in children with double ureters]. PMID- 3834670 TI - [Intestinal helminthiasis in children]. PMID- 3834671 TI - [Diagnosis and therapeutic management of early forms of tubal pregnancy]. PMID- 3834672 TI - [Giant neurinoma of the neck]. PMID- 3834673 TI - [Primary adenocarcinoma of the appendix]. PMID- 3834674 TI - [Ischemic necrosis of the lower extremity as a complication of acute dissecting aneurysm of the thoraco-abdominal aorta]. PMID- 3834675 TI - [Ionoflux as an adjuvant form of therapy of hysterical aphonia]. PMID- 3834676 TI - [Adverse effects of non-steroidal anti-inflammatory drugs. II. Adverse effects of heterocyclic enols]. PMID- 3834677 TI - [Talidology]. PMID- 3834678 TI - [Proceedings of the 14th meeting of the Polish Parasitological Society. Wroclaw, 20-22 September 1984]. PMID- 3834679 TI - [Review of the achievements of veterinary parasitology 1979-1983]. PMID- 3834680 TI - [Review of the achievements of Polish medical parasitology 1979-1983]. PMID- 3834681 TI - [Current status and prospects of the studies of Euglenida--the parasites of Copepoda]. PMID- 3834682 TI - [Current taxonomy of Amoeba]. PMID- 3834683 TI - [Methods and concepts used in the taxonomy of Isopoda and Copepoda]. PMID- 3834684 TI - [Principles and use of numerical taxonomy in the classification of Arthropods]. PMID- 3834685 TI - [Differentiation of characteristics of Mallophaga]. PMID- 3834686 TI - [Role of karyological studies in determining phylogenetic relationships based on the example of Acari]. PMID- 3834687 TI - [Local humoral response in gastrointestinal nematode infection]. PMID- 3834688 TI - [Role of fecal antibodies in the immunity against intestinal nematodes]. PMID- 3834689 TI - [Systemic immunosuppression of nonspecific cellular response in rats infected with Hymenolepis diminuta]. PMID- 3834690 TI - [Immunosuppressive effect of parasitic infection on the immune system of the host: suppression of the graft vs host reaction in experimental trichinosis in mice]. PMID- 3834691 TI - [Endoscopic and histopathological studies of gastric mucosa in patients with taeniarhynchosis]. PMID- 3834692 TI - [Biopsy of small intestinal mucosa in patients with Taenia saginata infection (preliminary report)]. PMID- 3834693 TI - [Occurrence of Trichomonas vaginalis infection in patients with neoplasms of the female genitalia]. PMID- 3834694 TI - [Changes in the virulence of Acanthamoeba strains]. PMID- 3834696 TI - [Preliminary studies on the life cycle of Tracheliastes maculatus Kollar, 1835 (Copepoda: Lernaeopodidae)]. PMID- 3834695 TI - [Effect of Trichinella pseudospiralis and T. spiralis infection on intestinal absorption in rats]. PMID- 3834697 TI - [Diagnosis and indications in psychotherapy]. AB - The more recent literature on the reliability and the status of psychiatric diagnosis is reviewed and confronted with the latest experimental results on the indication for psychotherapy. Accordingly it can be hypothesized that at least for outpatient psychiatry/psychotherapy there is no meaningful relationship between diagnosis and indication. Diagnoses do not imply indications for psychotherapy. This assumption is verified by the results of an outpatient fieldstudy and the implications are discussed. PMID- 3834698 TI - [From the Thematic Apperception Test (TAT) to the Salzburg Thematic Construction Test. Remarks on an overdue test revision]. AB - In autumn 1985 the "Thematische Gestaltungstest Salzburg", which is a further development of the well-known "Thematic Apperception Test" (TAT) H. A. Murray's, has been published by Beltz. The revision of this test includes not only a modification of the partly already antiquated pictures, but also a fundamental reorientation of the theoretical concept and of the system of analysis developed by Revers. The authors summarize the essential ideas of this test revision and explain the conclusions to be drawn for the discussion of the projection concept in psychodiagnostics. The article also displays a synopsis of the handbook for the TGT-Salzburg, which has been published together with the test. PMID- 3834699 TI - [Criterion-oriented measurement in clinical psychology: development of a test on stress management]. AB - Criterion-oriented tests evaluate the performance of the individual in relation to a given criterion which describes abilities and skills (intended competencies). The measuring process decides statistically if the person is "mastering" the criterion or not. The intended competencies should be represented by test items of high content-validity. The structure and application of this method especially to diagnostical issues of clinical psychology and therapeutic control are discussed. Steps are described construing a criterion-oriented test of stress and coping processes related to depressive and fearful behavior. The test is based on a situation-action-model in the theoretical framework of "stress and coping", "self-efficacy", "control" and "learned helplessness". Method and construction of items are shown in order to find some dimensions of coping behavior-in-situations (appraisals, person-directed and environment-directed actions) and its sequential organisation in stressful episodes. PMID- 3834700 TI - [Methods of diagnosis in family interaction: a metatheoretical reference frame]. AB - In order to obtain a systematic structure of family diagnosis a metatheoretical frame of reference is developed in which three levels are distinguished: Family diagnosis should concern the whole system of the family, the individual system members and the relationships between the system members. To classify the different methodological approaches the concept of Cromwell, Olson and Fournier (1984) is used, in which one distinguishes between an objective and a subjective frame of reference and between the outsider and the insider perspective. The possibilities to operationalize functionality versus disfunctionality of family systems or family interactions are discussed. PMID- 3834701 TI - [Creativeness and performance strengths in schizophrenic patients]. AB - Three positions concerning empirically detectable associations between (endogenous) psychosis and creativity are discussed: One which postulates a degeneration both in psychosis and creative people, another which tends to equalize creativity and psychosis and a third one which regards creativity as positive and psychosis as an illness. The latter position is well in accord with empirical results. These results are pointing to something which creativity has in common with psychosis. This common conditioning factor is probably a distinctive cognitive style and, depending on the specific context, presents itself either in a positive way (creativity) or as psychotic disorganisation. PMID- 3834702 TI - [Personality and neurosis in the biographical perspective]. AB - A biographical conception of neurosis requires a dynamical perspective of personality which may be defined as the relative stability of a person in time. The life-cycle is not merely a sequence of data but a complex pattern which can be reconstructed by all semiotic systems. But the ordinary all-purpose language is to be preferred because of its flexibility to fit even very complicated state of affairs. The narration of a life-cycle does not end in a unique version but a multiplicity of legitimate narratives. The unity of all these versions is conceived as paradigma, that means a set of similar examples. The extensional set of the paradigma shows a kind of order which may be characterized intensionally by a rule or a sense. The seeming irrationality of a neurotic symptom is caused by its belonging to a different paradigma for which there is a sense. Psychotherapy is an attempt to give the seeming irrational symptoms a specific sense and to change it in a second step. PMID- 3834703 TI - Approaches to planning and design of health care facilities in developing areas. Volume 5: Cross-national analysis of case studies. PMID- 3834704 TI - [Classification of gliomas by malignancy grades]. PMID- 3834705 TI - [The so-called paling of the heart muscle and its value as an expression of ischemic myocardial damage]. AB - Postmortem examination of human hearts demonstrated that fluorescent microscopic evidence of damage to the myocardium is present in most cases with so-called "paling". "Paling" is insufficient, however, to verify irreversible damage of the myocardium since nearly 1/3 of such cases have negative fluorescence microscopic reactions. In cases of acute coronary death with and without grossly visible signs of an ischemic myocardial damage necroses are demonstrable by fluorescence microscopy. This finding is not influenced by advanced autolysis. A fluorochromation with acridinorange at pH 7.0 is recommended in all cases of acute coronary death with and without paling or other macroscopic signs of acute ischemic damage to the heart muscle. PMID- 3834706 TI - [Interferon and sudden infant death (SIDS)]. AB - A comparison was made between interferon production by fibroblasts obtained from the excision of muscular tissue in suddenly deceased infants (SIDS) and that from children operated on at the surgical and orthopedic clinics. While the fibroblasts obtained from the surgically treated children formed interferon in a great quantity, the fibroblasts collected from suddenly deceased children generally failed to produce any interferon. PMID- 3834707 TI - [Patho-histological liver diagnostics-yesterday and today]. AB - The development of the so-called one second liver biopsy method of Menghini in 1957 resulted in rapid progress in the field of liver pathology. Indeed a new sub discipline of pathology was created based on the interpretation of needle biopsy findings. In order to achieve the current high level of diagnostic and prognostic accuracy it was necessary to provide special histopathological training and to emphasize clinical-pathologic cooperation. The full potential of this technique has not yet been universally realized. PMID- 3834708 TI - [Drug-induced liver damage from a clinical viewpoint]. AB - Biotransformation of xenobiotics is a life saving function of the liver. As a consequence of the tremendous development of new and highly effective drugs this function is frequently overburden. In recent years the number of patients with pharmocotoxic liver damage has become greater than that of patients with viral hepatitis. The liver answers xenobiotic overcharge by a limited spectrum of functional, morphological and clinical reaction patterns that can be caused also by other noxious agents. The manifestation of liver damage depends on a variety of factors such as properties of the drug, mode of administration, reactivity of the whole organism and of the liver as the target organ. From the clinical point of view, xenobiotics can be divided into compounds with foreseeable liver damage and into others in which liver damage is not foreseeable as well as into drugs which produce mainly cholestasis and others in which hepatitis dominates. Mixed patterns are possible. For clarifying diagnostic, differential diagnostic and therapeutic problems a graduated program is proposed. Prophylactic measures are based on this program. The increase of pharmacotoxic damage of the liver and other organs and the expected development leads to consequences and recommendations in health care. PMID- 3834709 TI - [Morphological reaction patterns of the liver induced by drugs]. AB - Drugs are exogenous substances often requiring metabolic transformation to be therapeutically effective. This occurs primarily in the liver, the most important metabolic organ and a structure able to adapt to this burden. Should its adaptive potential be exceeded, damage can occur, affecting principally the liver parenchyma. Such damage manifests itself as disturbed secretory function and as reversible or irreversible structural alteration of the liver cells. The constellation of toxic-degenerative lesions is referred to as hepatosis (toxic hepatosis, toxic hepatopathy). A variety of patterns of damage (lipidosis, necrosis, cholestasis etc.) occur alone or in combination. Depending on the severity and extent of these alterations a secondary inflammatory reaction may result. These changes are manifest as cellular infiltration and proliferation with formation of reticulo-histiocytic nodules or minifocal epitheloid cell reactions and non-caseous epitheloid cell granulomas. The eosinophilic component is striking. In the face of continued toxic exposures, changes resembling those of chronic aggressive hepatitis may develop following the acute changes. Other drug-related liver damage may present as vascular lesions the afferent or efferent venous systems as well as in the sinusoids (i.e. peliosis hepatis, Budd Chiari syndrome). Moreover there may be neoplastic alterations such as focal nodular hyperplasia or liver cell adenomas. Pathognomonic histologic criteria for drug-induced liver damage have as yet to be recognized, particularly in the case of facultative toxins. Morphologic indications can only suggest that a prior pharmaceutical agent was the likely cause of the damage. Histologic changes must however be viewed in the context of the medical history, clinical and laboratory findings, as well as results of other studies before the conclusion is drawn that the observed liver changes represent drug-induced injury. PMID- 3834710 TI - [Morphology of alcoholic liver damage]. AB - As a result of the ability to examine successive biopsy specimens, the process of progression of liver damage resulting from ethanol abuse is well appreciated. The ten most important tissue and cellular changes are described in the present paper. The staging system promulgated by the author since 1977 is reviewed: 1) Alcohol-induced liver damage without fibrosis, 2) Alcoholic hepatopathy with fibrosis, 3) Alcoholic hepatopathy with cirrhosis. Staging by this system provides clinically valuable prognostic information. Women with stage 1 changes have a two to threefold liklihood of advancing to stage 3 than do men with the same degree of initial damage. PMID- 3834711 TI - [Alcoholic liver damage in biopsy material]. AB - Typical alcoholic liver damage was found in 204 cases among 1,000 consecutive liver biopsies. Using the classification of Roschlau, 43.6% of the livers were stage II. Most alcoholic liver disease occurred in men and women in the fifth decade of life. The frequency of alcoholic hepatitis appeared to be greater in the higher stages. To determine the diagnostic value of different histologic changes, the frequency of several alterations was registered. PMID- 3834712 TI - [Light and electron microscopy findings in alcoholic liver damage]. AB - Large centrolobular hepatocytes and the formation of alcoholic clear cells are regarded as changes of prognostic significance in chronic alcoholism. Electron microscopically these cells reveal an increase of the endoplasmic reticulum. Special attention is paid to ultrastructural peculiarities of Mallory bodies, inflammatory changes and fibrosis. PMID- 3834713 TI - [Liver damage caused by pesticides]. AB - Histological liver findings are presented in 22 subjects with long-term exposure to pesticides who had been employed in agriculture. In addition to indicative liver cell changes (lipofuscinosis) and adaptive reactions (hypertrophy of the endoplasmic reticulum), lesions of the hepatocytes usually reflective of primary toxic reactions (single cell necroses, toxic cell swelling, fatty infiltration of the parenchyma) were observed. These occurred in part in combination with an activation of the mesenchyma. Considering the limited number of possible pathologic liver changes and the great variety of pesticides used, neither the individual findings nor their combinations could be considered characteristic of pesticide damage. A more precise evaluation of the results will only be possible in connection with a thorough analysis of working and environmental conditions and clinical and laboratory findings. The exclusion of additional exogenous and/or endogenous hepatotoxic factors is essential. PMID- 3834714 TI - [Angiosarcoma of the liver following brief arsenic therapy]. AB - Hepatic angiosarcoma developed in a 46-year-old man, who had had 7-months of arsenic therapy 24 years before. The role of arsenic in the etiology of angiosarcoma of the liver is well know, although rarely has it followed such a brief period of arsenic therapy. PMID- 3834715 TI - [Peliosis hepatis with liver rupture]. AB - The case of a 50-year-old woman with a ruptured liver caused by peliosis hepatis is presented. Death occurred three days after laparotomy for an acute abdomen with a clinical diagnosis of intra-abdominal hemorrhage. Autopsy findings including histology are presented and the possible pathogenetic mechanisms are discussed. There was neither evidence of a tumor nor of drug or toxin exposure. Known etiologic factors for this disorder are discussed on the basis of the medical literature. These include consumptive primary disorders, anabolic agents and oral contraceptives. The pathogenetic sequence involves damage to the endothelial cells of the hepatic sinuses and to the reticular fiber network. This case should make physicians aware of this infrequent iatrogenic disorder which is apparently increasing in its occurrence. PMID- 3834716 TI - [Morphology of new Listeria phages]. AB - Seventeen Listeria phages have isometric heads and long, noncontractile tails. Twelve of them belong to three already known phage species. Five phages represent a new species, named H387. PMID- 3834717 TI - Production of brownish pigment by bacteria of the Morganella-Proteus-Providencia group. AB - All bacteria of the Morganella-Proteus-Providencia group tested produced a brownish pigment on agar containing L-forms of aromatic amino acids, i.e. histidine, phenylalanine, tryptophan, and tyrosine in the presence of iron ions under aerobic conditions. No pigment was observed without iron or when using D forms of the amino acids. It is a melanin-like pigment with variable molecular weight under about 12000 D and an absorbance maximum between 330 and 410 nm depending on the concentration and the amino acid metabolized. Moreover, there is evidence that aldehydes are intermediates. In addition, the bacteria develop a characteristic almond-like smell on phenylalanine agar. PMID- 3834719 TI - Abstracts of papers presented at the session of the Virology Section of the Deutsche Gesellschaft fur Hygiene und Mikrobiologie. Erlangen, March 27-30, 1985. PMID- 3834718 TI - Inhibition of staphylococcal alpha-hemolysis by monoclonal antibodies against oligomer 12 S alpha-toxin. AB - Oligomer 12 S alpha-toxin as well as 3 S alpha-toxoid of Staphylococcus aureus induced the formation of monoclonal antibodies (mabs). Mabs against the 12 S alpha-toxin could be demonstrated in 31 and those against 3 S alpha-toxoid in 18 of 120 hybrid cell colonies. Each of these mab-preparations reacted with 12 S, 3 S alpha-toxin and 3 S alpha-toxoid. The reactions were more pronounced with the homologous than the heterologous toxin preparations. Mabs against 12 S alpha toxin inhibited the hemolytic effects of native 3 S alpha-toxin as well or better than the respective polyclonal antisera. PMID- 3834720 TI - [The properties of the nasopharyngeal carcinoma cell (CNE) strain adapted to grow at high temperature: alteration in phenotypic parameters shown by transformed cells]. PMID- 3834721 TI - [The role of activated macrophages in the anti-tumor activity of retinoic acid (RA) and N-(4-carboxyphenyl)-retinamide (RII)]. PMID- 3834723 TI - [The effects of gossypol on the secretive function of Sertoli cells in the rat by a method of collection of rete testis fluid of the rat]. PMID- 3834722 TI - [Observations of in vitro fertilization capacity and the transformation of human sperm nuclei before and after administration of gossypol acetic acid]. PMID- 3834724 TI - [Morphological changes in chromosomes during the embryo development of fishes]. PMID- 3834725 TI - [Photodamage in human erythrocyte membranes, induced by new photosensitizer hypocrellin A]. PMID- 3834726 TI - [A comparative study of esterase isozyme profiles in mouse embryonic and adult tissues and embryonal carcinoma cells]. PMID- 3834727 TI - [Palatal muscles in human fetuses]. PMID- 3834728 TI - [A case of the congenital partial defect of the pectoralis major--accompanied by the sternalis with enormous size]. PMID- 3834729 TI - Abstracts. 13th meeting of the Hungarian Biophysical Society. 3-5 July, 1985, Debrecen. PMID- 3834730 TI - Papillary carcinoma of thyroglossal duct cyst. A case report. AB - A case of papillary carcinoma of thyroglossal duct cyst in a 68 year old woman is here described. Histology showed a papillary carcinoma of thyroid type inside the cyst. The wall of this latter contained normal thyroid follicles. Psammoma bodies and ground glass nuclei were also observed. The origin, pathology and relationship of this neoplasia with a thyroid primary are discussed. PMID- 3834731 TI - [Clinical aspects and surgical treatment of carotid body tumors]. AB - The authors report their experience of three cases of carotid corpuscle tumors: two are bilateral and pertaining to the same family, one of them is associated with a bilateral tympano-jugular glomus. First they review the epidemiology and definitions of such tumors and then they develop the various clinical aspects and differential diagnosis of these tumors. They insist on the necessity of a CT scan examination and of an angiography. They give their experience of the preoperative embolization of the tumour vessels. They expose various aspects of the surgical technique, pointing out the interest of a large access, the need of a regular surgery and the necessary collaboration between head and neck surgeons and vascular surgeons. Finally they discuss the opportuneness to operate bilateral glomic tumors. PMID- 3834732 TI - [Postauricular myogenic response. Valuable as an objective test for hearing screening?]. PMID- 3834733 TI - [A case of retropharyngeal tumor. Differential diagnosis and treatment of retropharyngeal tumors]. AB - The authors report a case of a tumor of the spatium retropharyngeale. Although the medical literature reports no many cases of this kind, a propose of differential diagnosis and treatment is presented. A special attention has been devoted to chordoma, which is a very important kind of tumors of the spatium retropharyngeale. PMID- 3834734 TI - [Dermoid cyst of the tongue]. AB - An epidermoid cyst of the tongue with sinus tract is discussed. Its interest comes from the fact that histologic sections show sinus tract wall and epidermoid cyst wall made with the same major characteristics of skin structures. Both have therefore the same embryologic origin. Adequate treatment is surgical excision. PMID- 3834735 TI - [Clinical and surgical aspects of carcinoma of the base of the tongue and of the glosso-epiglottic region]. PMID- 3834736 TI - [Allergic mechanisms in the pathogenesis of secretory otitis media in childhood]. PMID- 3834737 TI - [Importance of aryl hydrocarbon hydroxylase in laryngeal oncogenesis. Preliminary data]. PMID- 3834738 TI - [A case of primary immunocytoma of the thyroid. Histogenetic and prognostic considerations]. PMID- 3834739 TI - [Auditory evoked brainstem potentials, magnetic resonance and computerized tomography in the diagnosis of acoustic neurinoma]. PMID- 3834740 TI - [Semont's maneuver in paroxysmal postural vertigo]. PMID- 3834741 TI - [Hemangiopericytoma of the external auditory canal in childhood: description of a case]. PMID- 3834742 TI - [Surgery of the parathyroid glands in chronic renal insufficiency]. PMID- 3834743 TI - Comparative in vitro activity of four beta-lactam antibiotics in surgical wound fluid against staphylococci. AB - Minimal inhibitory and bactericidal concentrations (MIC and MBC) of methicillin, dicloxacillin, cephalothin and cefuroxime were determined against 26 strains of staphylococci, using a broth dilution method with surgical wound fluid (WF) and Mueller-Hinton broth (MH) as test media. The staphylococci were all clinical isolates; 17 strains were coagulase-positive and 9 were coagulase-negative. The MIC-values of dicloxacillin and cephalothin estimated in MH were lower than those estimated in WF. For methicillin and cefuroxime the MIC-values in the two media were similar. With regard to MIC-values, the two penicillins were identical in WF, as were the two cephalosporins, but the cephalosporins were found to be more active than the penicillins, with an average of one dilution step. As regards the MBC to MIC ratios, no differences were found neither between the two media nor between the four antibiotics. PMID- 3834744 TI - [The antidysrhythmic effect of puerariae isoflavones]. PMID- 3834745 TI - [Studies on the constituents of Patrinia villosa]. PMID- 3834746 TI - [Morphological and histological studies of the Chinese drug Bai-jiang-cao. III. Drugs derived from genera Sonchus, Lactuca and Ixeris, family Compositae]. PMID- 3834747 TI - [Determination of gossypol with high performance liquid chromatography]. PMID- 3834748 TI - [Effects of tetrapyrazine on membrane fluidity and electrophoretic mobility of platelets and the relation to its antiaggregation effect]. PMID- 3834749 TI - [Analgesic action of propranolol]. PMID- 3834750 TI - [The central inhibitory action of hexoprenaline]. PMID- 3834751 TI - [TLC separation and fluorodensitometric determination of quinidine in human serum]. PMID- 3834752 TI - Chemoreceptor reflexes and cardiovascular control. AB - Evidence is presented which indicates that in the absence of other known inputs to the nervous system and during controlled pulmonary ventilation, stimulation of the carotid body chemoreceptors causes bradycardia and selective peripheral vasoconstriction. These responses may be attenuated, however, by concomitant changes in respiration and arterial blood pressure, and by activity of higher parts of the brain stem. Stimulation of the aortic bodies in mammals in which they are functionally active, causes bradycardia or tachycardia and selective peripheral vasoconstriction. The reflex vascular effects from the peripheral arterial chemoreceptors are mediated by alpha-adrenergic sympathetic fibres. A potential mechanism exists therefore whereby the peripheral arterial chemoreceptors could contribute to the neurogenic component of hypertension. PMID- 3834753 TI - Increased resistance to acute anoxia of the respiratory and cardiac function in spontaneously hypertensive rats. AB - In spontaneously hypertensive rats NIbn (SHR) and in normotensive Wistar rats (NCR) 12-16 weeks old, anaesthetized with urethane, anoxia was produced by nitrogen administration through a tracheal cannula. Ventilation was measured by tetrapolar impedance rheography. NCR responded to anoxia with a marked increase in TV and in respiratory rate (f.), whereas in SHR a depression of TV and increase in f. was observed. In NCR respiratory arrests and alternating with spontaneous restorations of respiration were observed during anoxia. This pattern of response to anoxia never appeared in SHR. After the glossopharyngeal nerves had been cut anoxia caused a depression of TV and increase of f. in NCR. In contrast, chemodenervation in SHR did not qualitatively change the respiratory response to anoxia. Periods of spontaneous respiration under anoxic conditions were significantly longer in SHR than in NCR. Also left ventricular contractions and ECG activity were maintained for a longer time in SHR than in NCR during anoxia. EEG activity disappeared in both groups of animals at about the same time after the onset of acute anoxia. The above data point to: 1) reduced responsiveness of the arterial chemoreflex in SHR, and 2) markedly increased tolerance to anoxic conditions in SHR. PMID- 3834754 TI - Augmented chemoreceptor reflex tonic drive in early human hypertension and in normotensive subjects with family background of hypertension. AB - The study was carried out in 30 subjects with mild primary hypertension and in 82 normotensive age-matched volunteers, 18-20 years of age. Hyperoxia test was used to withdraw the tonic chemoreceptor reflex drive. The following circulatory and respiratory effects of short lasting hyperoxia were observed in the hypertensive group and in most of the normotensive subjects yet with a family background of hypertension: a decrease in the mean arterial pressure, in total peripheral vascular resistance, and in forearm vascular resistance, and a significantly greater reduction of the resting ventilation as compared to the normotensive group. Our results suggest that the augmented arterial chemoreceptor drive is one of the mechanisms responsible for the elevated arterial blood pressure and total peripheral resistance in early human hypertension. The positive response to hyperoxia test in healthy subjects with a family background of hypertension suggests a familial occurrence of the hyperactivity of the arterial chemoreceptors. PMID- 3834755 TI - Contribution of the carotid chemoreceptor reflex to the mechanism of respiratory sinus arrhythmia in young healthy and hypertensive humans. PMID- 3834756 TI - Some observatoons on the carotid bodies of the New Zealand strain of genetically hypertensive rats. AB - We report preliminary studies of the carotid bodies in the New Zealand strain of hypertensive rats. Female animals have a higher blood pressure than males of the same colony, but in both sexes mean arterial pressure is elevated significantly when compared to normal animals. The carotid bodies are enlarged in both the hypertensive and normotensive animals and there is no correlation between carotid body size and arterial pressure. The only structural abnormality detected in the hypertensive carotid bodies was a gross thickening of the intimal layer of the arterioles. The content of dopamine in the organs was similar in normotensives and hypertensives but the noradrenaline levels were some 50% lower in the hypotensives. These results are discussed and compared with data available for SHR animals. PMID- 3834757 TI - Vascularization and morphology of carotid bodies in patients with essential hypertension. AB - Vascularization and morphology of carotid bodies in 100 necropsies of patients with essential hypertension in comparison with the 83 normotensives were studied. The statistically significant differences between the two groups were found. The carotid bodies of hypertensive subjects were vascularized by a lower number of arteries than those of the normotensives. This difference seems to be genetically determined. The mean combinated mass of carotid bodies of hypertensive subjects was higher than this of normotensive ones. The hyperplasia of the type I cells in carotid bodies of hypertensives was found. The subjects with a lower number of glomic arteries are more susceptible to disturbation of blood flow to the carotid body, overstimulation of carotid chemoreceptors and consequent hypertension. The results of study done may support the concept of the possible role of carotid body in the pathogenesis of essential hypertension. PMID- 3834758 TI - [Derivatives of 1,1-dioxo-1,4,2-benzodithiazine. III. Synthesis and diuretic properties of 3-(R,R1-phenyl)amino-6-chloro-7-methyl-1,1-dioxo-1,4,2-benzodithiaz ine s]. PMID- 3834759 TI - [Search for compounds with dopaminergic action. II. Synthesis of various derivatives of 6-aminomethyl-1,4-benzodioxane]. PMID- 3834760 TI - [Synthesis of propenol and pentanediol derivatives]. PMID- 3834761 TI - [Derivatives of 1,1-dioxo-1,4,2-benzodithiazine. V. Synthesis and diuretic properties of various derivatives of 3-phenylamino-7-carboxy-1,1-dioxo-1,4,2 benzodithiazine]. PMID- 3834762 TI - [The search for anticholinergic drugs. XLIV. Synthesis of derivatives of 1 adamantane-carboxylic acid]. PMID- 3834763 TI - [Synthesis of derivatives of perhydroazepine, perhydro-1,5-oxazocine, morpholine and piperazine containing 3-(isopropylamino)-propan-2-ol group--compounds with potential effect on the circulatory system and central nervous system]. PMID- 3834764 TI - [Synthesis and pharmacological studies of derivatives of 5- and 7-(O hydroxyphenyl)-2,3-dihydro-1,4-diazepins]. PMID- 3834765 TI - [Determining the serum level of chlorpromazine by high-performance liquid chromatography]. PMID- 3834766 TI - [Effect on the central nervous system and circulatory system of new derivatives of perhydroazepine, perhydro-1,5-oxazocine, morpholine and piperazine containing a pharmacophoric 3-(isopropylamino)-propan-2-ol group]. PMID- 3834767 TI - [Microbial inhibitors of hydrolases--the isolation and study of their properties]. PMID- 3834768 TI - [A method of determining polyether antibiotics]. PMID- 3834769 TI - [Changes in the activity of Krebs cycle enzymes in an Aspergillus niger strain during the biosynthesis of citric acid]. PMID- 3834770 TI - [Antiviral action of fractions isolated from propolis]. PMID- 3834771 TI - A 3H-thymidine autoradiographic study of the development of the cerebellum of the White Leghorn (Gallus domesticus): "evidence for longitudinal neuroblast generation patterns". AB - Dynamic aspects of the development of the cerebellum of the white Leghorn (Gallus domesticus) were examined using 3H-thymidine autoradiography. A single dose of 25 microCi 3H-thymidine was given to embryos varying in age from 0-18 days. The embryos were all studied before hatching, either after short or after long survival times. It appeared that the superficial part of the outer mantle layer (OML-s, or called external granular layer, egl) is histologically present at day 6, but starts its activity as a secondary matrix at day 7, probably due to activation by a secondary influx of cells from the ventricular neuro-epithelium. It was also demonstrated that Purkinje cells and cells of the central cerebellar nuclei are produced by the ventricular neuro-epithelium mainly at days 3, 4 and 5. No birth of these cells was observed beyond day 5. In addition, a relationship was found between the birth patterns of Purkinje cells and cells of the central cerebellar nuclei and the longitudinal cytoarchitectonic patterns as observed in normal Nissl stained material. It was concluded that these birth patterns are an early contribution to the establishment of the longitudinal organization of the cerebellum. PMID- 3834772 TI - Retroperitoneal paraganglia and the peripheral autonomic nervous system in the human fetus. AB - By means of the AChE in toto staining method retroperitoneal paraganglia and the peripheral autonomic nervous system in human fetuses have been investigated. Many small retroperitoneal paraganglia are present near the sympathetic trunks close to the sympathetic trunk ganglia. In the thoracic region small paraganglia are present in the intercostal spaces. Small splanchnic nerves entering small paraganglia have been described. In the lower sacral region no paraganglia are present. The major splanchnic nerve arises at various levels from the sympathetic trunks as well as many smaller thoracic splanchnic nerves. Intermediate ganglia are present in the major splanchnic nerve, the smaller splanchnic nerves and the communicating rami. In the sympathetic trunks many ganglia are fused. In the human fetus there exists a large variability in number and diameter of the communicating rami. Interconnecting bundles of nerve fibers between the left and right sympathetic trunks are present at all levels, but most numerous at the sacral level. PMID- 3834773 TI - Changes in acid phosphatase activity in developing neurons. Intrinsic or extrinsic property? PMID- 3834774 TI - The development of the peripheral autonomic nervous system in relation to the gastro-intestinal tract. AB - In this study the development of vagus nerves and the development of sympathetic nerves related to the development of the upper gastro-intestinal tract was studied in the rat from 12.5 days p.c. until birth by means of enzyme histochemical methods applied to sections and toto preparations. A striking time relation between the ingrowth of the vagus nerves as well as the sympathetic nerves and the appearance of acetylcholinesterase (AChE)-positive cells in the wall of the upper gastro-intestinal tract is established. The maturation of the upper enteric ganglion cells is dependent on the presence of a vagal influence. The vagal ingrowth of the stomach starts at about day 12.5 p.c. In AChE toto preparations it is established that the basic distribution pattern as described in the adult rat is complete at day 15 p.c. However, in contrast with the adult state, gastric branches can be traced up to the pylorus and the greater curvature until day 18 p.c. During the 18th day p.c. there is a tremendous increase in the surface area of the stomach. This increase in surface area of the gastric wall and relative decrease in vagal outgrowth leads to the adult configuration of vagal ramifications in relation to the wall of the stomach which can already be observed on the 19th day p.c. PMID- 3834775 TI - An HRP study of the central connections of the facial nerve in the mallard (Anas platyrhynchos L.). AB - The location of several facialis innervated muscles has been determined by injecting individual muscles with horseradish peroxidase. The depressors of the lower jaw are represented in the dorsal facial motor nucleus and the tongue retractor muscles in the intermediate facial motor nucleus. HRP was also directly applied to the rostral and caudal branch of the facial nerve. The afferent connections are described including two small projections to the principal sensory nucleus and n. interpolaris which were not found in birds before. PMID- 3834776 TI - Development of the nervous system. Proceedings of a workshop held during the Congress of the Deutsche Gesellschaft fur Histochemie, Maastricht (The Netherlands), 26th-30th September 1984. PMID- 3834777 TI - Induction of an additional floor plate in the neural tube. AB - The role of the notochord in the morphogenesis of the neural tube was investigated by implanting a notochord fragment laterally to the neural wall of a 1.5 day chick embryo. Embryos were sacrificed at 4 days. In the basal part of the neural tube an additional floor plate was induced in the vicinity of the implant. This floor plate was characterized by a low proliferative activity, a thin wall, spindle-like nuclei crowded peripherally and some neuroblast-like cells. It was either blending with the natural floor plate or separated from it, depending on the exact position of the implant. In the latter case neuroblasts were observed in between both floor plates. The additional floor plate was present only when the implanted notochord was less than 25 micron apart from the neural tube; at larger distance an increase of the ventral horn neuroblast area could be seen. It is concluded that the implanted notochord is able to induce a floor plate at 1.5 days of incubation. The specific influence of the notochord on the morphogenesis of the neural tube, its inductive period as well as the presence of the neuroblast-like cells in the additional floor plate are discussed. PMID- 3834778 TI - The neural crest in presomite to 40-somite murine embryos. AB - The production of cells by the neural crest is studied light-microscopically in 10 microns and 1 micron serially sectioned mouse and rat embryos, ranging in age from presomite to 40-somite stages. In the head region, mesectoderm formation starts in a pre-neural plate stage. It continues to the 20-somite stage. This implies that the contribution of the neural crest to the head mesoderm must be considerable. In the trunk, the neural crest only produces cells after adhesion of the neural walls. Mesectoderm formation continues for a long time, slowly retreating in a caudal direction. At the 40-somite stage, mesectoderm formation still occurs in the most caudal part of the trunk. Compared to the head, the contribution of the neural crest in the trunk seems to be less important than that of the primitive streak. PMID- 3834779 TI - [Neuroleptic malignant syndrome (N.M.S.). Presentation of a case treated with dantrolene]. PMID- 3834780 TI - [Psychopharmacology of pain]. PMID- 3834781 TI - [The disease of drug dependence]. PMID- 3834782 TI - [The dexamethasone suppression test and manic disorder]. PMID- 3834783 TI - [Biological basis of suicidal behavior]. PMID- 3834784 TI - [Attitudes towards mental disorders among the families of schizophrenics]. PMID- 3834785 TI - [Concerning the scientific nature of analytic therapies and the dangers that loom over them]. PMID- 3834786 TI - Anisotropic thermal motion and polypeptide secondary structure studied by X-ray analysis at 0.98A resolution. AB - aPP is a 36-amino acid polypeptide which forms a stable globular structure stabilised by hydrophobic interactions between a polyproline-like helix and an alpha-helix. Crystals contain dimers and are crosslinked by coordination through zinc ions leading to a well-ordered lattice which diffracts X-rays to a resolution of 0.98A. This gives a 5:1 ratio of observations-to-parameters even when anisotropic thermal ellipsoids defined by six parameters for each non hydrogen atom were refined using least-squares techniques. Rigid body refinement of groups within the polypeptide was also undertaken. The relationship of the principal axes of individual thermal ellipsoids and the librations of rigid side groups to features of secondary, tertiary, and quaternary structures of aPP and its interactions with water molecules are described. PMID- 3834787 TI - Molecular mechanisms for the recognition of damaged DNA regions by peptides and proteins. AB - DNA damages can lead to drastic perturbations of living cell cycle (e.g., in carcinogenesis) by inducing mutations in the genetic information. Therefore DNA repair processes play an important role during cell life by eliminating DNA damages before mutation fixation. Different repair processes are briefly presented in this review. Two probes were used to provide information on the mechanisms involved in the specific recognition of damaged DNA by proteins and enzymes of the DNA repair machinery. It will be shown that a simple tripeptide Lys-Trp-Lys is able to mimic two repair systems, namely, the photosensitized splitting of pyrimidine dimers and the cleavage of phosphodiester bonds at apurinic sites. PMID- 3834788 TI - Mechanisms of stimulus-response coupling in platelets. London, 26-27 September 1984. PMID- 3834789 TI - Specific binding of [3H]-1-O-octadecyl Paf-acether to washed human platelets. AB - [3H]-Paf-acether binds to washed human platelets in a dose-dependent manner. Scatchard analysis reveals two distinct binding sites; a high affinity site with a KD value of 0.259 +/- 0.33 nM (245 +/- 30 sites per platelet) and a lower affinity site with a KD value of 9.22 +/- 1.17 nM (1616 +/- 165 sites per platelet). Association of 3H-Paf-acether to the high affinity receptor is rapid, being maximal within two minutes and remaining constant for at least twenty minutes. Dissociation from the low affinity receptor is also rapid (t1/2: less than 10s) whereas dissociation from the high affinity site is significantly slower (t1/2 : approximately 70s). [3H]-Paf-acether binding is inhibited by unlabelled (R)-C16-Paf (IC50: 0.08 +/- 0.01 nM) greater than (R)-C18-Paf (0.48 +/ 0.03 nM) greater than (RS)-C18-Paf (1.06 +/- 0.19 nM), but remains unchanged in the presence of lyso-C18-Paf at 3.0-300 nM. [3H]-Paf-acether binding and its inhibition by unlabelled (R)-C18-Paf-acether is independent of buffer Ca2+ within the range 0-5.0 mM. PMID- 3834790 TI - Phase II evaluation of maytansine (NSC 153858) in advanced cancer. A Southeastern Cancer Study Group trial. AB - Maytansine given in a 3-day course q3 weeks produced only five responses (3%) in 163 evaluable adults with advanced cancer. The dose schedule employed is not recommended for further study. PMID- 3834791 TI - Dibromodulcitol (DBD), DTIC, and actinomycin-D in disseminated malignant melanoma. A phase I-II clinical trial. AB - Thirty-seven fully assessable patients with metastatic malignant melanoma were administered DTIC, actinomycin-D, and dibromodulcitol (DBD) on a q 3- to 4-week schedule. Doses of actinomycin-D and DTIC were 1.25 mg/m2 and 750 mg/m2, respectively, on day 1. DBD was progressively escalated in five dose levels in succeeding patients from an initial 90 mg/m2 daily, days 3-7, to a dose-limiting 230 mg/m2. Two complete and nine partial responses were observed for an overall response rate of 30%. Median duration of response was 18 weeks. Major toxicities observed were hematologic and gastrointestinal. Median survival of all patients was 30 weeks and did not differ significantly from our earlier trials of DTIC and actinomycin-D +/- chlorozotocin. Although the observed objective response rate was higher than our previous efforts in this disease, the addition of DBD failed to significantly impact on the survival of the entire treatment group. Further investigation of this chemotherapy combination does not appear warranted. PMID- 3834792 TI - A phase I trial of recombinant leukocyte alpha 2 interferon in patients with advanced malignancy. AB - Seventeen patients with advanced, previously treated malignancies were entered into a phase I trial utilizing recombinant DNA produced alpha 2 leukocyte interferon (rIFN-alpha 2). Sixteen patients were evaluable. Patients were to receive rIFN-alpha 2 by either the I.V. or I.M. route for 35 consecutive days. The dosage was identical by both routes, and patients were escalated from 3 X 10(6) to 10 X 10(6) to 30 X 10(6) to 50 X 10(6) and to 100 X 10(6) I.U. every 7 days. No patient was able to tolerate the consecutive treatment protocol as planned. Dose-limiting toxicity was a flu-like syndrome in 10 patients and was usually associated with a fall in performance status. Confusion resulted in study withdrawal for five patients, four receiving rIFN-alpha 2 by the I.M. route. Hematologic and liver function abnormalities were common, usually transient, and not associated with clinical sequelae. One patient with non-Hodgkin's lymphoma showed substantial improvement; otherwise, all had stable or progressive disease. Pharmacologic studies indicated substantial serum levels at doses greater than or equal to 10 X 10(6) I.U. regardless of route. No consistent changes in NK activity, lymphocyte subpopulations, or immunoglobulin levels were noted, and no patient developed antibodies to rIFN-alpha 2. The dose and schedule used here indicate that high levels of serum rIFN-alpha 2 activity are obtainable by either the I.M. or I.V. route. Intermittent rather than daily dosage is more likely to be better tolerated and should be considered for phase II trials. PMID- 3834793 TI - Vaccine delivery in developing countries. PMID- 3834794 TI - Brazilian Leishmania stocks phenotypically similar to Leishmania major. AB - Screening by enzyme electrophoresis of isolates of New World Leishmania from different geographic areas revealed a number of stocks with enzyme profiles different from those produced by reference strains of described subspecies of L. mexicana, L. braziliensis, and L. donovani. Analysis by six enzymes (aspartate aminotransferase; alanine aminotransferase; malate dehydrogenase; glucose-6 phosphate dehydrogenase; phosphoglucomutase; and glucose-phosphate isomerase) showed that these stocks have identical enzyme profiles and form a distinct zymodeme grouping. These observations were confirmed using the technique of schizodeme analysis and by comparing the k-DNA fingerprints produced by the restriction enzymes MspI, BspRI and AluI. The stocks were further analyzed by monoclonal antibodies and did not react with any of a large panel of L. mexicana, L. braziliensis, and L. donovani species- and/or subspecies-specific monoclonal antibodies using either an indirect radioimmune binding assay or immunofluorescence. These stocks did, however, react with a panel of monoclonal antibodies specific for L. major (formerly L. tropica major). Furthermore, the stocks could not be differentiated from L. major reference strains by enzyme electrophoresis nor could they be distinguished qualitatively from L. major based on their reactivity patterns using 10 Old World cutaneous species- and subspecies specific monoclonal antibodies. Kinetoplast DNA restriction enzyme profiles, however, were different between these stocks and L. major reference strains. The implications of these results are discussed including the existence of other L. major-like stocks currently misidentified or uncharacterized. PMID- 3834795 TI - Adoptive transfer of vaccine-induced resistance to Leishmania donovani. AB - BALB/c mice were immunized with three subcutaneous injections combining killed parasites and glucan, or were untreated. Spleen cells were transferred to syngeneic recipients. Mice which received 5 X 10(8) spleen cells from vaccinated donors demonstrated significant protection against Leishmania donovani challenge as compared to untreated mice receiving immune sera, or mice which received untreated spleen cells. PMID- 3834796 TI - Induction of immunity in mice to Fasciola hepatica with a Fasciola/Schistosoma cross-reactive defined immunity antigen. AB - The paradox of schistosomiasis is that infection confers immunity to its host, yet immunization with subcellular antigens of the parasite does not, in general, induce protective immunity. Infection or immunization with subcellular antigens of Fasciola hepatica confers high levels of immunity to a challenge infection with another trematode, Schistosoma mansoni. We have isolated by antibody affinity chromatography a Fasciola hepatica/Schistoma mansoni cross-reactive antigen, designated FhSmIII(M), and also have shown that this antigen confers immunity in mice to a challenge infection with S. mansoni. This antigen was compared with a crude F. hepatica worm extract (FhWWE) as to its ability to induce an IgG antibody response in mice, and to determine whether it had a protective effect in mice to a challenge infection with F. hepatica metacercariae. Mice immunized with FhSmIII(M) or FhWWE, and subsequently infected with F. hepatica, developed higher IgG antibody levels to FhSmIII(M), as measured by ELISA, than F. hepatica-infected controls. Mice immunized with FhWWE did not develop significant levels of resistance to challenge with F. hepatica metacercariae. Mice immunized with FhSmIII(M) and infected with F. hepatica metacercariae developed 69%-78% less worms than controls. An F. hepatica/S. mansoni cross-reactive, cross-protective defined immunity antigen confers in mice significant levels of protection to a challenge infection with F. hepatica. PMID- 3834797 TI - Brugia malayi: vaccination of jirds with 60cobalt-attenuated infective stage larvae protects against homologous challenge. AB - Vaccination of inbred jirds (Meriones unguiculatus) with 60cobalt radiation attenuated Brugia malayi infective stage larvae (L3) protected against homologous challenge given either subcutaneously (sc) or by the intraperitoneal (ip) route. Groups of jirds vaccinated once sc with 75, 15 Krad L3 showed from 69% to 91% reduction in recovered worms after ip challenge infection compared to infection in non-vaccinated control jirds, while 75% reduction in mean worm burden was seen in jirds receiving sc challenge infection. A single sc vaccination with 75, 10 or 20 Krad L3 produced no protection (10 Krad) and 64% reduction in recovered worms (20 Krad). Therefore the 15 Krad dose appeared to be best. A marked increase in anti-B. malayi antibody in vaccinated jirds was seen (by ELISA) immediately after challenge infection and an immunofluorescence assay showed that L3 incubated in serum from vaccinated jirds were completely and uniformly covered with specific antibody. Eosinophil-rich granulomas containing dead and moribund L3 were recovered from vaccinated jirds. This model of protective immunity in a Brugia susceptible small rodent may provide a useful system for identification of molecularly defined filarial-protective immunogens. PMID- 3834799 TI - Pulmonary dirofilariasis in a Costa Rican man. AB - In a 33-year-old male Costa Rican who died of undetermined cause 2 hours after admission to hospital, autopsy revealed a small female Dirofilaria causing a recent hemorrhagic infarct unlike the pale coin lesion usually seen in pulmonary dirofilariasis. PMID- 3834798 TI - Zoonotic subcutaneous filaria of undetermined classification. AB - A necrotic adult male filaria was found in sections of a dense, fibrous, subcutaneous nodule excised from below the breast of a 61-year-old woman, resident of Mie Prefecture in Honshu, Japan. Owing to its necrotic condition, and to a lack of essential knowledge of the comparative micro-anatomy of filarial worms, a differentiation between Dirofilaria and Dipetalonema species, or member of a related group, was not possible. PMID- 3834800 TI - The onchocercal nodule: interrelationship of adult worms and blood vessels. AB - This study of onchocercal nodules reveals an intimate relationship between the cuticle of Onchocerca volvulus and the capillaries of the host. Perfusion of blood vessels with India ink and other special techniques reveal a proliferation of capillaries around the worms and communication between small vessels and the spaces around the worms. The space around the worm is continuous with the central fibrin lake. These findings, together with the fact that the worm's gut contains hemosiderin, suggest that the worm subverts the vascular reaction and causes within the nodule a controlled hemorrhage that serves the worm's nutritional needs. We believe this explains, in part, how worms survive in fibrous nodules for many years. PMID- 3834801 TI - Chronic Chagas' disease in the mouse: contractile response of the isolated myocardium. AB - The effects of different pharmacological agents on the isometric developed tension (IDT) of right ventricles isolated from chronic chagasic C3HS mice were studied. The IDT in ventricles of chagasic animals was lower than in ventricles of normal mice (P less than 0.01). Chagasic ventricles exhibited hyperreactivity to norepinephrine but not to epinephrine. This hyperreactivity was masked by propranolol and not by dibenamine. Acetylcholine produced a reduction of IDT to similar values in normal and chagasic myocardia. The possibility that the effect of the drugs tested might not result from specially beta adrenoceptor-mediated reactions, but from alterations at other cellular sites is discussed. PMID- 3834802 TI - Isolation and characterization of hemorrhagic toxin g from the venom of Crotalus atrox (western diamondback rattlesnake). AB - Hemorrhagic toxin g (HT-g) was isolated from Crotalus atrox (western diamondback rattlesnake) venom using a five-step purification procedure to obtain approximately equal to 5.9 mg of purified HT-g from 2.0 g of crude venom. The purified toxin was homogeneous by disc electrophoresis on polyacrylamide gel at pH 8.3 and 4.3, and by isoelectric focusing. HT-g possessed lethal, hemorrhagic and proteolytic activities. These activities of toxin were inhibited by ethylenediamine-tetraacetic acid (EDTA), 1,10-phenanthroline or ethyleneglycol (beta-amino-ethyl) N,N,N',N'-tetracetic acid (EGTA), but not by cysteine or soybean trypsin inhibitor (SBTI). Its molecular weight was approximately 60,000 and the isoelectric point was 6.8. The toxin contains 516 amino acid residues. HT g did not coagulate fibrinogen to fibrin; however, the toxin hydrolysed the A alpha-chain or B beta-chain of fibrinogen without cleaving the gamma-chain. HT-g produced only local hemorrhage in internal organs such as the intestine, heart and liver. PMID- 3834803 TI - Effect of extrinsic incubation temperature on the ability of Aedes taeniorhynchus and Culex pipiens to transmit Rift Valley fever virus. AB - Studies were conducted to examine the effects of extrinsic incubation (EI) temperature on the vector competence of Egyptian Culex pipiens and North American Aedes taeniorhynchus for Rift Valley fever (RVF) virus. Following per os exposure, infection rates in Ae. taeniorhynchus remained relatively constant at 55%, 56%, and 59% for mosquitoes held at EI temperatures of 13, 26, and 33 degrees C, respectively. In contrast, significantly fewer Cx. pipiens became infected when held at 13 degrees C (38%), than when held at 26 degrees C (75%) or 33 degrees C (91%). In both species, viral dissemination and transmission occurred earlier in mosquitoes held at high temperatures as compared to those held at low temperatures. Following EI at 26 or 33 degrees C, Cx. pipiens were able to transmit virus as early as 1 day after inoculation with RVF virus. However, 3 days were required before the first transmissions by inoculated Ae. taeniorhynchus. Temperature of EI affected these 2 species differently in their ability to transmit RVF virus. Because of the importance of EI temperature on infection and transmission rates, as well the length of the EI period, the role of EI temperature will need to be evaluated for each virus and vector pair. PMID- 3834804 TI - Oral infection of Aedes aegypti with yellow fever virus: geographic variation and genetic considerations. AB - Twenty-eight populations representing a worldwide distribution of Aedes aegypti were tested for their ability to become orally infected with yellow fever virus (YFV). Populations had been analyzed for genetic variations at 11 isozyme loci and assigned to one of 8 genetic geographic groups of Ae. aegypti. Infection rates suggest that populations showing isozyme genetic relatedness also demonstrate similarity to oral infection rates with YFV. The findings support the hypothesis that genetic variation exists for oral susceptibility to YFV in Ae. aegypti. PMID- 3834806 TI - Round table on new approaches in oriented research on malaria parasites. Rome, November 29, 1984. PMID- 3834805 TI - Selection for susceptibility and refractoriness of Aedes aegypti to oral infection with yellow fever virus. AB - Artificial selection on strains of Aedes aegypti showing susceptibility and refractoriness to oral infection with yellow fever virus (YFV) suggests that there is a significant genetic component to this trait. Using a population with an average susceptibility of 15%, inbreeding of isofemale lines followed by individual selection produced susceptible (29% infected) and refractory (11% infected) lines. The difference between lines was largely apparent before individual selection, which failed to increase/decrease susceptibility significantly. The findings suggest that very few loci with a major bearing on the trait segregated genetic variation in the original population sample, and that non-genetic factors also play a major role in determining whether or not Ae. aegypti females become infected with YFV. PMID- 3834807 TI - [Principles of radiation protection in teletherapy installations]. PMID- 3834808 TI - [Search for neurotoxins in algae and mussels collected during appearance of red tide on the Emilia Romagna coast in the summer of 1984]. PMID- 3834809 TI - [Effects of uremic middle molecules on the activity of erythrocyte lactate dehydrogenase (LDH)]. PMID- 3834810 TI - [Course on leptospirosis]. PMID- 3834811 TI - Acid phosphatase as a marker of cellular damage. Characterization of two cell lines for toxicity studies. PMID- 3834812 TI - [Radiation protection in the management of radioactive waste generated by patients treated with radiopharmaceuticals]. PMID- 3834813 TI - [Detection of diethylstilbestrol residues in bovine feces using HPTLC and GC-MS]. PMID- 3834814 TI - [Changes in depressive symptomatology in Austria]. AB - A study of psychopathological manifestations of depressive in-patients, treated in the Salzburg psychiatric clinic in the last ten years, showed a masked shift of symptoms. The shift is away from guilt-feelings as well as away from religious content to a more general moral one. Also noted was a definite increase in feelings on insufficiency and hypochondric ideas. A comparison with tendencies in the Maghreb areas, in which a shift from the masked-somatic symptoms toward guilt depression is reported, our results show here in Europe a renewed tendency of a shift from guilt-depression to hypochondric or anxiety-depression. PMID- 3834815 TI - [The Cotard syndrome in adolescents]. PMID- 3834816 TI - [The morbidly jealous person as seen by Clerambault, Freud, Adler and others]. PMID- 3834817 TI - [Outcome of paranoid psychoses. Follow-up study of 125 cases 23-37 years after the 1st hospitalization]. PMID- 3834818 TI - [Twins and the relation to functional psychoses]. PMID- 3834819 TI - [Plasma monitoring of haloperidol. Correlation with clinical efficacy and plasma prolactin levels]. PMID- 3834820 TI - [The adult psychiatrist and the caring capacity of parents]. PMID- 3834821 TI - [The C.P.R.S.: comparison with other general evaluation scales in psychopathology]. PMID- 3834822 TI - [Neoplasms in gynecology: up-date of the role of lymphography]. PMID- 3834823 TI - [Clinical aspects of acute pelvic inflammation: our experience in 118 cases]. PMID- 3834824 TI - [Women and the family clinic: a difficult relationship]. PMID- 3834825 TI - [Diagnosis of struma ovarii in a patient in treatment for thyroid carcinoma]. PMID- 3834826 TI - [Normal development of the secondary sex characteristics in a case of 46,XY gonadal dysgenesis]. PMID- 3834827 TI - Transfer of amphotericin B from gel state vesicles to mycoplasma cells: biphasic action on potassium transport and permeability. AB - The action of amphotericin B on the K+ permeability of Mycoplasma mycoides var. capri cells, containing either cholesterol or ergosterol in their membranes, was studied. When the drug, solubilized in dimethyl sulfoxide, was added directly to the cell suspension, a slightly greater sensitivity to permeabilization was observed for ergosterol-containing cells, confirming the data reported in the literature. When amphotericin B bound to gel state phospholipid vesicles was added to the cell suspension, two effects on cholesterol-containing cells were observed. First, the K+ active transport rates increased; membrane permeabilization and K+ leakage were subsequently detected. For ergosterol containing cells these sequential events were observed only at amphotericin B concentrations below 10(-6) M. At higher concentrations only K+ leakage was observed. The second permeabilization effect varied with the amphotericin B concentration in different ways in the two types of cells. The permeabilization of ergosterol-containing membranes depended on the amphotericin B/phospholipid molar ratio, whereas the permeabilization of cholesterol-containing membranes did not. In general, the latter remained fairly constant when the total amphotericin B concentration in the medium varied. PMID- 3834828 TI - In vitro susceptibilities of Campylobacter-like organisms to twenty antimicrobial agents. AB - We determined MICs of 20 antimicrobial agents for 50 representative strains of four subgroups of Campylobacter-like organisms (CLOs) by agar dilution. Ampicillin, gentamicin, doxycycline, tetracycline, ceftriaxone, rifampin, spectinomycin, nalidixic acid, and chloramphenicol were active against all strains of CLOs. Most CLO strains (83%) were inhibited by 4 micrograms of sulfamethoxazole per ml and by 8 micrograms of trimethoprim-sulfamethoxazole per ml. Of type 1 strains, 28% were resistant to 8 micrograms of erythromycin per ml. In addition, cross resistance between erythromycin and clindamycin was always present. Type 1 strains exhibited a broad distribution of MICs of metronidazole and streptomycin, whereas all type 2 strains were uniformly susceptible to metronidazole and resistant to streptomycin. Unlike type 1 and 3 strains, type 2 CLOs were susceptible to cephalothin and penicillin G and highly resistant to streptomycin. The type 3 strain was uniquely resistant to cefazolin. The majority of strains were not inhibited by cefoperazone; and all were resistant to trimethoprim. In contrast to Campylobacter jejuni and Campylobacter fetus subsp. fetus, all CLOs tested were susceptible to 0.5 microgram of rifampin per ml. PMID- 3834829 TI - Determination of pipemidic acid in plasma by normal-phase high-pressure liquid chromatography. AB - An improved high-pressure liquid chromatography procedure for determining the concentration of pipemidic acid in human plasma was developed, which uses a normal-phase silica gel column and aqueous mobile solvent system similar to that used in reverse-phase chromatography. Precolumn derivatization of pipemidic acid was achieved by a methylation reaction with boron trifluoride in methanol after extraction from plasma with chloroform containing 4% ethanol. The percent recovery of pipemidic acid was 88.3 +/- 7.7, the variation of which became negligible when quinacrine was used as an internal standard for the determination. High-pressure liquid chromatography analysis was performed by conventional silica gel and mobile solvent mixtures containing 3% of 0.14% HClO4 solution, 19% methanol, and 78% chloroform. The UV detector was set at 265 nm. The detection limit of pipemidic acid methyl ester was as low as 10 ng of the injection amounts or 0.5 micrograms of the plasma per ml, with 0.01 absorbance units (full scale) and a signal-to-noise ratio of 3. PMID- 3834830 TI - Use of adjuvants for enhancement of rectal absorption of cefoxitin in humans. AB - The biological availability of cefoxitin administered rectally in the form of suppositories was examined in six human subjects by a cross-over design. Four different suppository systems containing adjuvants expected to enhance the absorption of the drug were studied. The presence of sodium salicylate and a nonionic surface-active agent, Brij 35, gave increased bioavailability as high as 20% compared with 3% for a system without adjuvants. The quantity of sodium salicylate was found to have an influence on the quantity of cefoxitin absorbed, and the salicylate was absorbed over an extended period of time from the rectum. The suppositories were well tolerated, and there were no adverse effects on bowel flora. PMID- 3834832 TI - Evaluation of aztreonam in the treatment of severe bacterial infections. AB - We investigated the clinical efficacy and safety of aztreonam in the treatment of 50 episodes of infection in 46 adult patients. The clinical condition of patients at the beginning of treatment was critical or poor in 28 of the episodes of infection. Episodes treated were 39 urinary tract infections (12 of them with concomitant bacteremia), 2 soft tissue infections, 8 patients with osteomyelitis (1 with concomitant bacteremia), and one episode of pneumonia. Significant isolated microorganisms were aerobic or facultative gram-negative rods and were responsible for the following episodes of infection (number of episodes): members of the family Enterobacteriaceae (49), Pseudomonas aeruginosa (5), and Haemophilus influenzae (1). The overall rate of clinical response to aztreonam was 94% of the treated episodes. Colonization or superinfection or both occurred in 29 episodes, but only 8 episodes required antimicrobial therapy. Aztreonam seems to be an effective single agent therapy for many bacterial infections. Colonization and superinfection by Candida sp., Streptococcus faecalis or Staphylococcus aureus must be monitored. PMID- 3834831 TI - Comparative single-dose pharmacokinetics of amantadine hydrochloride and rimantadine hydrochloride in young and elderly adults. AB - The single-dose pharmacokinetics of amantadine hydrochloride and rimantadine hydrochloride were compared in a randomized, two-period, crossover study involving six young (less than or equal to 35 years) and six elderly (less than or equal to 60 years) adults. Subjects ingested single 200-mg oral doses after an overnight fast, and serial plasma (0 to 96 h), nasal mucus (0 to 8 h), and urine (0 to 24 h) samples were collected for assay of drug concentration by electron capture gas chromatography. For both groups combined, rimantadine differed significantly from amantadine in peak plasma concentration (mean +/- standard deviation, 0.25 +/- 0.06 versus 0.65 +/- 0.22 micrograms/ml), plasma elimination half-life (36.5 +/- 15 versus 16.7 +/- 7.7 h), and percentage of administered dose excreted unchanged in urine (0.6 +/- 0.8 versus 45.7 +/- 15.7%). No significant age-related differences were noted for rimantadine. Urinary excretion (0 to 24 h) of rimantadine and its hydroxylated metabolites averaged 19% of the administered dose. The maximum nasal mucus drug concentration was similar for both drugs (0.42 +/- 0.25 versus 0.45 +/- 0.32 micrograms/g), and the ratio of maximum nasal mucus to plasma concentration was over twofold higher after rimantadine than after amantadine. These findings may in part explain the clinical effectiveness of rimantadine in influenza A virus infections at dosages that have lower toxicity than those of amantadine. PMID- 3834833 TI - In vitro interaction of aminoglycosides with beta-lactam penicillins. AB - The aminoglycosides are used clinically in combination with beta-lactam antibiotics. The combined use, however, produces an interaction and inactivation of the antibiotics. A study was designed to investigate the kinetics of the interaction in vitro. Four concentrations of aminoglycosides (5 to 20 micrograms of gentamicin and tobramycin per ml) and penicillins (100 to 600 micrograms of carbenicillin and ticarcillin per ml) were incubated in plasma (3 days, 37 degrees C). Samples taken at 12-h intervals were analyzed for both aminoglycosides (radioimmunoassay) and penicillin (high-pressure liquid chromatography). In controls, degradation of all four antibiotics were by first order reactions. In incubation mixtures of two antibiotics, the rate of loss of the aminoglycosides was greater than that in the controls, whereas the rate of loss of penicillins was not significantly increased. The loss of penicillins in incubation mixtures still appeared to be by first-order reactions. However, semilogarithmic plots of aminoglycoside concentrations were curvilinear, suggesting a second-order reaction. Aminoglycoside concentrations in incubation mixtures were fitted by computer to a model incorporating a second-order interaction between aminoglycosides and penicillins and the first-order loss of penicillin from the mixture. The interaction rate constant averaged 2.2 X 10(-4) (micrograms/ml h)-1 for interaction of both carbenicillin and ticarcillin with gentamicin and 1.6 X 10(-4) (micrograms/ml h)-1 for interaction of the penicillins with tobramycin. The effect of the interaction in vivo was examined by computer simulation using the kinetic parameters determined in vitro. PMID- 3834834 TI - In vitro evaluation of the antimicrobial activity of lichen metabolites as potential preservatives. AB - Antimicrobial screening of several lichen species and subsequent isolation and structure elucidation of active compounds revealed that the hydrolysis products of certain lichen metabolites, i.e., depsides, were active against gram-negative bacteria and fungi as well as gram-positive bacteria. The active constituents isolated from Stereocaulon alpinum and Peltigera aphthosa were identified, respectively, as methyl beta-orsellinate and a mixture of methyl and ethyl orsellinates. MIC determinations indicated that activity of these compounds was superior to that of the commonly used preservative agents methyl and propyl p hydroxybenzoates and was of the same order as that of chlorocresol. PMID- 3834835 TI - Moxalactam kinetics during continuous ambulatory peritoneal dialysis after intraperitoneal administration. AB - Moxalactam kinetics during continuous ambulatory peritoneal dialysis (CAPD) was followed in eight patients after a single intraperitoneal dose of 1 g. Approximately 60% of the dose was absorbed after a dwell time of 4 h. Dialysis solutions were exchanged at 4-h intervals with an overnight dwell of 8 h. The mean (+/- standard deviation) elimination half-life was 13.2 +/- 2.9 h, and the mean apparent volume of distribution was 0.22 +/- 0.08 liters/kg. Mean total clearance was 11.5 +/- 2.4 ml/min, with a mean dialysis clearance of 2.3 +/- 0.5 ml/min. The maximum concentration in plasma ranged from 24.5 to 54.1 micrograms/ml. Moxalactam concentrations in the peritoneal dialysis fluid were above 80 micrograms/ml during the first exchange and above 2 micrograms/ml for a further three exchanges. A suggested intraperitoneal dose regimen for patients undergoing CAPD is 1 g initially, followed by 15 to 25% of the recommended dose for normal patients given at the same time intervals, or 30 to 50% of the recommended dose at twice the usual intervals. Moxalactam is suggested for initial treatment of peritonitis in CAPD patients who do not have ready access to the antibiotic of choice. PMID- 3834836 TI - Penetration of oral doxycycline into the cerebrospinal fluid of patients with latent or neurosyphilis. AB - Five patients with laboratory evidence of latent or neurosyphilis were treated orally with doxycycline (200 mg) twice a day for 21 days. After the seventh dose, the mean level of doxycycline in serum was 5.8 micrograms/ml, with a mean drug level in cerebrospinal fluid of 1.3 micrograms/ml. The mean penetration into cerebrospinal fluid was 26%. These preliminary findings suggest that doxycycline, administered orally at a dose of 200 mg twice a day, reaches a sufficient concentration in cerebrospinal fluid to be worthy of further evaluation as an alternative regimen to penicillin therapy for latent or neurosyphilis. PMID- 3834837 TI - Norfloxacin penetration into human renal and prostatic tissues. AB - Concurrent norfloxacin concentrations in serum, kidney, and prostatic tissue were determined in 14 patients. Mean ratios of norfloxacin concentration in tissue over concentration in serum were 6.6 +/- 2.8 for the kidney and 1.7 +/- 0.2 for the prostate samples. The levels were above the MICs of most urinary pathogens. PMID- 3834838 TI - Antimicrobial susceptibilities of food-isolated strains of Yersinia enterocolitica, Y. intermedia, Y. frederiksenii, and Y. kristensenii. AB - The in vitro antimicrobial susceptibility of Yersinia enterocolitica and newly related species isolated from foods was examined. Only 4 of 375 isolates displayed resistance to non-ss-lactam antibiotics. MICs of ampicillin and carbenicillin determined by agar dilution with respect to 125 isolates showed the high susceptibility of Y. kristensenii and biovar 3 of Y. enterocolitica to carbenicillin (MIC for 90% of the strains, less than or equal to 8 micrograms/ml). PMID- 3834839 TI - Emergence of trimethoprim resistance in fecal flora. AB - The emergence of trimethoprim (TMP) resistance in fecal flora was compared in patients with urinary tract infection treated with TMP or TMP-sulfamethoxazole. No significant differences were found in the occurrence of TMP-resistant fecal aerobic bacteria in the two treatment groups before and after treatment. PMID- 3834840 TI - Antibiotic resistance and serotypes of 100 Streptococcus pneumoniae strains isolated in a children's hospital in Barcelona, Spain. AB - A total of 100 Streptococcus pneumoniae strains with various penicillin G susceptibilities, isolated in Barcelona, Spain, from different pediatric sources during 1983 and the first 4 months of 1984, were tested for susceptibility to tetracycline, chloramphenicol, erythromycin, clindamycin, vancomycin, and rifampin. The isolates were distributed in nine patterns of antibiotic resistance, and 15 different serotypes were encountered. The high incidence of resistance to multiple antibiotics clearly indicates the need to perform antibiotic susceptibility testing of all pneumococcal isolates with proved pathologic significance to avoid therapeutic failure. PMID- 3834841 TI - Malaria chemoprophylaxis with chloroquine in young Nigerian children. II. Effect on the immune response to vaccination. AB - The immune response of 198 young Nigerian children protected against malaria by chemoprophylaxis with chloroquine to immunization with triple, poliomyelitis, measles, typhoid, meningococcal and BCG vaccines was compared with the immune response to vaccination of 185 control children. Good responses to triple, measles and BCG vaccines were shown by children in both groups; poorer responses were obtained to poliomyelitis, typhoid and meningococcal vaccines. The response to immunization of protected children was similar to that observed among control children for all the vaccines tested except for meningococcal polysaccharide vaccine. Protected children showed a significantly greater antibody response to both group A and group C meningococcal polysaccharides than control children. This finding supports the results of previous studies which have shown that the immune response to meningococcal polysaccharide vaccines is adversely affected both by acute malaria and by asymptomatic malaria parasitaemia. PMID- 3834842 TI - Malaria chemoprophylaxis with chloroquine in young Nigerian children. IV. Its effect on haematological measurements. AB - Haematological measurements were made in 198 Nigerian children aged three months to two years who received weekly malaria chemoprophylaxis with chloroquine from shortly after birth until the age of one or two years and in 185 age-matched control children. Children protected against malaria had a higher mean haemoglobin level and a higher packed cell volume than control children, and they showed fewer abnormalities of their red cells. Total and differential white blood cell counts, mean plasma folate and mean serum ferritin concentrations were similar in both groups of children. However, the geometric mean red cell folate level of children exposed to malaria was significantly higher than the mean level of control children; and it may be that malaria raises the red cell folate through intracellular synthesis by malaria parasites. Children with malaria parasitaemia had a significantly lower haemoglobin and packed cell volume and a significantly higher geometric mean red cell folate and ferritin level than children without parasitaemia. Serum ferritin is probably an unreliable index of iron status in children with malaria. PMID- 3834843 TI - Induction of protective immunity in cattle by tsetse-transmitted cloned isolates of Trypanosoma congolense. AB - Cattle infected with cyclically (tsetse)-transmitted clones of Trypanosoma congolense were treated with the trypanocidal drug diminazene aceturate ('Berenil') at various intervals during development of local skin reactions (chancres), in order to investigate the role played by trypanosomes in the skin in the induction of protective immunity. Cattle, treated on or before Day 12 after infection and prior to detection of trypanosomes in the blood, showed a range of susceptibility to cyclically-transmitted homologous challenge three weeks later. An animal treated on Day 5, when the skin reaction was first detected, was completely susceptible, whereas of the animals treated on Days 10 to 12 at the peak of the skin reaction, some were immune, others exhibited partial immunity, while the rest were susceptible. The susceptible animals, however, showed evidence of sensitization to trypanosomes, as demonstrated by development of Arthus-type reactions following homologous challenge with tsetse transmitted parasites or intradermal inoculation with lysed or irradiated homologous trypanosomes. Cattle treated 15 or more days after cyclically transmitted infection, when chancre reaction was subsiding and trypanosomes were present in the blood, were completely immune to challenge. Immunity was achieved by treating cattle on Day 5 and Day 10 after infection with cyclically transmitted trypanosomes but only if this procedure was repeated on several occasions, indicating that bloodstream forms of trypanosomes were not essential for the induction of protective immunity. Protective immunity appeared to be effective against the metacyclic trypanosomes at the level of the skin, as animals which were immune to homologous challenge with cyclically-transmitted parasites did not develop detectable skin reactions at the site of the tsetse bite. Furthermore, the time of the appearance in the serum of antibody which completely neutralized the metacyclic population (Day 15) coincided with the time at which cattle had developed immunity against homologous challenge. The immunity produced lasted for five months. PMID- 3834844 TI - Observations on the growth and population dynamics of Bulinus rohlfsi in an outdoor laboratory at Volta Lake, Ghana. AB - Two cohorts of Bulinus rohlfsi were reared separately in an outdoor laboratory at Volta Lake, Ghana. One group was kept in lake water with a mud substratum, the other in lake water without mud. Both cohorts were able to tolerate water temperatures ranging from 22.0 to 35.5 degrees C, but growth and survival were significantly greater for the cohort with mud. The overall intrinsic rate of natural increase, r, per fortnight was 1.096 for the snails having the mud substratum and 1.642 for the cohort not having it. The 'r' values were strongly influenced by high early fecundity of the snails in lake water only and low early fecundity of the snails with mud. Oviposition among the latter cohort was suppressed at times of high turbidity in the water above the mud substratum, caused primarily by suspended clay. PMID- 3834845 TI - Bertiella sp. infection in man in Saudi Arabia. AB - Tapeworm proglottids and eggs of Bertiella sp. were reported from the stools of a 28-year-old Yemeni male worker in Saudi Arabia, who complained mainly of non specific gastro-enteritis. This appears to be the first report of an Anoplocephaline infection in man in Saudi Arabia. Niclosamide was effective in removing the parasites. PMID- 3834846 TI - The prevalence and epidemiology of cestodes in dogs in Clwyd, Wales. I. Farm dogs. AB - The results of a survey of 51 farms in Clwyd carried out between 1981 and 1983 to elucidate the prevalence and epidemiology of dog cestodes are reported. Taeniid species were obtained from 24 (17.1%) of the 140 dogs which purged. Taenia ovis and T. hydatigena appeared to depend largely on dogs scavenging from carcasses for the perpetuation of their life-cycles, whereas T. multiceps was found only in dogs on two farms where sheep heads formed the main diet of the dogs. Dog husbandry in relation to cestode epidemiology is discussed, and recommendations for control are made. PMID- 3834847 TI - The activity of plumbagin and other electron carriers against Leishmania donovani and Leishmania mexicana amazonensis. PMID- 3834848 TI - Improved in vitro determination of the viability of Taenia saginata embryos. PMID- 3834849 TI - Cysticercus tenuicollis of village sheep and goats in southwest Nigeria. PMID- 3834850 TI - [Physiological basis of fatigue]. PMID- 3834851 TI - [Psychosomatic aspects of fatigue]. PMID- 3834852 TI - [Fatigue in young children]. PMID- 3834853 TI - [Fatigue in adolescents]. PMID- 3834854 TI - [Fatigue in women]. PMID- 3834855 TI - [Excitability cycle of the soleus motor nucleus during synergistic conditioning in man]. AB - Electrical stimulation of medial or lateral gastrocnemius nerve modulates the H reflex of the soleus muscle in a well defined sequence of inhibitory and facilitatory phases the amplitude of which depends on the strength of the conditioning stimulus. This method of investigation of the soleus monosynaptic reflex pathway avoids the disadvantages of homonymous conditioning. Discussion of our results points to the roles of Ib and Renshaw cells inhibitions in the early phases of the recovery cycle, and to the roles of reafferents, disinhibition of Renshaw cells, presynaptic inhibition and muscarinic discharge of Renshaw cells for the late phases. PMID- 3834856 TI - [The quantities of dried venom collected from specimens of Vipera ammodytes L., 1758 (Reptilia, Viperidae) in captivity in Bulgaria]. AB - Some researches have been made to obtain more data about quantities of dried venom collected from Vipera ammodytes L., 1758 in captivity. The minimal quantity of dried venom collected by exemplar is 9.7 mg to 36.4 mg and the maximal quantity is 49.0 mg to 90.3 mg. From 810 exemplars of V. ammodytes of Bulgaria and 9 months of investigations, 10597 samples were made, with a total of 298.164 g of dried venom (average for animal: 28.14 mg). PMID- 3834857 TI - [Bacterial pollution of the lagoon of Tunis]. AB - The authors present in this paper a study about the bacterian pollution of the lagoon of Tunis based on 120 samples collected in 10 different stations. This study points out that the lagoon is polluted (50.8% of the samples) mostly in autumn and in winter. The pollution is exogenous, chiefly caused by the rain spreading over polluted waters of wastes and of rivers, and also by the action of the winds and of the currents on the sediments hosting microbiological parameters of faecal pollution. PMID- 3834858 TI - [General data on the diet of Myliobatidae (Pisces, Selachii)]. PMID- 3834859 TI - [Sexuality of selachian fishes]. AB - The author presents in this paper some data of the sexuality of Selachian Fishes chiefly first size of sexual maturity and sexual dimorphism (size, morphology, ethology and others). This study is mostly based on species of Tunisian coasts. PMID- 3834860 TI - A new surgical procedure for the treatment of lumbar spinal canal stenosis especially recommendable for degenerative and combined stenosis. PMID- 3834861 TI - [Regional assessment of pathophysiological changes in acute cerebral ischemia: multiparametric histochemical study]. PMID- 3834863 TI - [Experimental study on trigeminal evoked potentials in cats]. PMID- 3834862 TI - [Correlation of in vitro clonogenic assay data with in vivo chemosensitivity of human rhabdomyosarcoma xenografts]. PMID- 3834864 TI - [Serial magnetic resonance imaging (MRI) on experimental brain edema in rats]. PMID- 3834865 TI - [A microphotometric study on the nuclear DNA content in cells of human and experimental large intestinal carcinoma]. PMID- 3834866 TI - Giant cell tumor of the distal end of the radius replaced by a free autogenous proximal fibular graft: long-term follow-up of two cases. PMID- 3834867 TI - Carcinoma of the cystic duct: a case report. PMID- 3834868 TI - A case of neurilemmoma originated from intercostal nerve. PMID- 3834869 TI - [Aplasia of the proximal middle cerebral artery associated with an aneurysm of the proximal anterior cerebral artery. Case report]. PMID- 3834870 TI - Improved utilization of marine species of low commercial value through the elaboration of hydrolysates. AB - Although Mexico is a country with a great fishing potential, fish consumption remains very low. An important reason for this situation is the difficulty faced in regard to its preservation and distribution, a factor which notably increases the final price of the product. As is known, in some countries fish preservation is carried out through autolysis, using high concentrations of sodium chloride. This was the type of work carried out by us, in an effort to adapt the procedure to the species and conditions prevalent in Mexico. The raw material was selected according to its availability and cost. The selected species were mojarra (Archosargus unimaculatus) and sardine (Sardinops caerula). Three different fish to-salt ratios were tested (1.5:1, 4:1 and 6:1), with incubation periods ranging from 4 to 24 weeks, at both 20 to 23 degrees C, and 37 to 39 degrees C. Results indicated that a fish-to-salt ratio of 4:1, at a temperature of 37 degrees C and an incubation period of 12 weeks, represent the optimun conditions for obtaining a fish sauce which is acceptable in flavor, with a protein content of 12% per 100 ml, and a storage life of at least 90 days. The recovery of the final product was 22%, reaching 35% in a second extraction. Sensory evaluation tests were undertaken by adding the sauce to cooked unsalted rice. According to the results, there was a favorable acceptance of the final product. The price calculated for the elaboration of the sauce at the household or rural level was lower, as compared with the price of protein from meat or egg which is 3-to-4-fold higher. PMID- 3834871 TI - [Sensory evaluation and acceptability study, at the consumer level, of bread supplemented with sweet lupine flour]. AB - The purpose of this study was to determine the effect of incorporating sweet lupine flour (SLF) to bread, upon the organoleptic characteristics and acceptability of the product. The substitution levels were 3, 6, 9 and 12%. The sensory evaluation test was done by 25 trained judges using the hedonic scaling method (9 to 1 scoring). Internal and external characteristics of appearance, color, aroma, texture, bitterness and flavor, as well as general acceptability, were measured. Sensory evaluation results of the external characteristics were significant at the 9 and 12% SLF levels for color (p less than 0.05) while the other parameters did not show significant differences. In regard to the internal characteristics, a significant difference for color was found at the 3% level of SLF (p less than 0.05); and at 6, 9 and 12% SLF levels, for appearance (p less than 0.05). The general acceptability was good at all the levels tested, with no significant differences among them. An acceptability study at the consumer level for 9% lupine flour bread was carried out in a group of 90 girls, aged 10-12 years, during a 10-day period. The results showed a very good acceptability of the product (p less than 0.01). The results of this study indicate that the incorporation of 6% SLF to the bread, did not affect adversely its sensory properties. Moreover, the acceptability of bread containing up to 12% SLF was excellent. PMID- 3834873 TI - [Effect of the extrusion process on the functional characteristics and protein quality of quinua (Chenopodium quinoa, Willd)]. AB - In order to have available a human food of high nutritive value, and conscious of the protein quality of the quinua, as well as its carbohydrate, vitamin and mineral content, its behavior during the extrusion process was tested in the present study. To eliminate saponins, a simple method was developed which consisted of washing the seeds through an aluminum container, using a wooden stirrer. Seven treatments were studied: washed quinua, washed and cooked quinua, washed and expanded quinua No. 1 and No. 2, and washed and texturized quinua No. 1 and No. 2; casein was used as control. Biological evaluation trials were carried out in Holtzman rats, following the PER method. To detect the possible effects of the processed quinua on the experimental animals, hematological as well as histopathological studies of the vital organs were performed. A maximum PER of 2.43 was obtained for the texturized quinua, 2.16 for the expanded quinua, 2.6 for the cooked quinua, while the casein control yielded a PER of 3.00. The physico-chemical characteristics of the quinua flour were determined, as well as those of the expanded and texturized products. The product obtained was subjected to an organoleptic trial and it can be stated that the results obtained were satisfactory. The product can be consumed directly without major modifications and has an acceptable flavor. The nutritive value of quinua was not impaired; it compared favorably with the best diets recommended for the population, especially of those with a lower income. The results obtained in the present study suggest the possibility of increasing the nutritional value of the product, as well as its acceptability. PMID- 3834872 TI - [Formulation and evaluation of the protein quality of a flour mixture of shark fillet by-products and shrimp heads]. AB - A flour proposed as a protein source for chick feeding was evaluated. The flour consisted in a 1.00:1.15 dry mixture of by-products from shark filleting (dt) and shrimp by products (cc). It had a crude protein content of 55.66%, a Ca:P ratio of 5.76 and an essential amino acid pattern similar to that of fish meal and/or shark meat. Methionine proved to be the first limiting essential amino acid. The shark meat and the by-products from shark filleting had adequate levels of available lysine (from 337 to 383 mg/g N). The flour had a fineness modulus (F.M.) of 3.95, an average particle diameter of 0.0175 inches (0.444 mm) and a uniformity index of 1:5:4 (coarse:medium:fine parts). The flour was considered suitable for chick feeding. The protein quality of the flour mixture (dt-cc) was evaluated in rats using diets which contained 3, 6, 9 and 12% protein from the product, and determining the PER, NPR and NGI values. Diets containing similar protein levels prepared from dried shark meat flour, mixed with casein, were used as standards. The flour mixture (dt-cc) had a PER of 1.60, an NGIo of 2.46, an NGI of 2.49 and an apparent digestibility of 88.80%. These values proved to be significantly (p less than 0.05) lower than those found for the corresponding shark meat flour-casein standard diets. The above results are partially explained by the high mineral content, high Ca:P ratio and high Na and K of the dt-cc mixture, factors which could interfere with the utilization of the most limiting essential amino acids and other nutrients, as some vitamins, in these diets. The Kruskal-Wallis test of the feed efficiency (EA) data obtained in growing chicks revealed that there was a significant (p less than 0.05) difference between the EA values obtained with the dried shark meat-containing diets and the standard commercial diets (Purina and a diet based on a 1.6:1.0 soybean meal:cottonseed meal mixture). No significant differences were found between the dt-cc mixture containing diets and the commercial ones used as standard. The diet containing 6% shark meat flour was found to be the best based on the EA data. The diet with 12% of the dt-cc mixture gave similar EA values than all those containing shark meat flour; however, the greater nutritional-economic impact based on the EA data was found for the diets containing 3 and 6% of the dt-cc flour mixture.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3834874 TI - [Selection of parameters for thermal treatment of soybeans by enzyme inactivation]. AB - The effects of thermal treatment, dry heat and steam on the physiologically active substances: urease and trypsin inhibitors of soybean products, were evaluated by means of urease activity and trypsin inhibitor activity. The parameters time and temperature, moisture and particle size were considered. From these analyses it can be concluded that the best conditions to obtain optimum soybean products were 25% of initial moisture content, exposed to steam (97 degrees C) during four to eight minutes. PMID- 3834875 TI - [Nutritional effect of pectin in swine during growth and before slaughter]. AB - The nutritional effects that the addition of 2 and 4% of citrus pectin produce on the pig, was investigated. Forty pigs were divided into two treatments and fed with and without pectin during the growth and finishing period. Dorsal back-fat thickness was measured in all pigs before slaughtering (103 +/- 1.5 kg). The addition of 2% of pectin in the growth period (41 to 70 kg live weight) produce a decrease of 6 and 3% in the daily weight gain and the feed conversion rate, respectively. The addition of 4% of pectin in the finishing period (71 to 103 kg live weight) induced a highly significant (p less than 0.01) increase of 125 g (15%) in the daily weight gain and equal feed conversion rate as compared to the control treatment. The average thickness of back-fat in pigs subjected to the pectin treatment was 2 mm (8%) less than in those of the control group. In conclusion, we may report that the addition of pectin during the finishing period produces an increase in the daily weight gain rate without affecting feed conversion. Besides, it decreases the back-fat thickness. PMID- 3834876 TI - [Synopsis of the Seminar on Breast Feeding Promotion in Central America, Panama and the Dominican Republic. Isla Contadora, Panama, 1983]. AB - The most recent and reliable information on the status of breast-feeding in Central America, Panama and the Dominican Republic indicates that during the last decades, in all of these countries there has been a decrease in the prevalence and duration of breast-feeding. In some of them, this situation would seem to be reverting. Considering the importance that breast-feeding has on children's health and nutrition, the Institute of Nutrition of Central America and Panama (INCAP), organized a Regional Seminar on the Promotion of Breast-feeding, which was held in Contadora Island, Panama, in April, 1983. Based on the discussions of the working groups, sectoral and integrated recommendations were formulated for the purpose of promoting breast-feeding. This document contains specific recommendations for each of the sectors represented in the Seminar. PMID- 3834877 TI - [Amaranth, a further resource of enormous nutritional potential for Latin America]. PMID- 3834878 TI - [Nutritive value of shellfish consumed in Chile]. AB - The purpose of the present study was to determine the protein quality and digestibility of shellfish commonly consumed in Chile, and to estimate its contribution to the protein needs of the Chilean population. The shellfish studied were chorito (Mytilus edulis chilensis), macha (Mesodesma donacium), loco (Concholepas concholepas), cholga (Aulacomya ater), erizo (Loxechinus albus) and almeja (no specific variety). The NPU method was used to determine protein quality. The percentage of protein adequacy for adult rations was calculated according to FAO/WHO 1973. The contribution of shellfish to the protein availability according to the family income of the Santiago population, was also calculated. Most of the shellfish presented NPU values of about 70; the lowest values were found for loco (54.9) and macha (63.3). The apparent and true digestibility gave an average of 83.6 and 90.4, respectively. The percentage of protein adequacy of habitual rations ranged between 27% (erizo) and 58% (loco). The availability of shellfish protein in relation to total protein increased from 0.4 to 2.5% when income increased. It is concluded therefore, that shellfish protein is, in general, of good quality. Nevertheless, it might be considered of poor influence insofar as fulfilling the protein needs of the population studied, whatever its socioeconomic level. PMID- 3834879 TI - [Evaluation of the adjusted amino acid score by digestibility for estimating the protein quality and protein available in food and diets]. AB - The purpose of the present study was to evaluate the amino acid score adjusted by digestibility to estimate protein quality and utilizable protein in foods and diets, considering net protein utilization (NPU) as a biological reference method. Ten foods of vegetable origin and ten of animal origin, as well as eight mixtures of foods of vegetable and animal origin were studied. When all the foods were considered, a positive (r = 0.83) and highly significant correlation (p less than 0.001) between NPU and the amino acid score adjusted by digestibility was found. When the foods were separated according to their origin, this correlation was positive only for the foods of vegetable origin (r = 0.93) and statistically significant (p less than 0.001). Also, only in those foods were similar values found between NPU and amino acid score adjusted by digestibility, as well as in utilizable protein estimated considering both methods. Caution is required to interpret protein quality and utilizable protein values of foods of animal origin and mixtures of foods of vegetable and animal origin when the amino acid score method adjusted by digestibility, or NPU, are utilized. PMID- 3834880 TI - Food production for home consumption: nature and function of gardens in household economies. PMID- 3834881 TI - Population studies on PLG group system in the Polish population. AB - Distribution of PLG types was studied in a sample of the Polish population numbering 230 subjects by the method of high-voltage agarose electrophoresis. Of three phenotypes encountered, PLG1, appeared with the frequency of 0.4870, PLG2-1 with 0.4391 and PLG2 with 0.0739. Assuming the hypothesis of PLG controlled by 2 alleles the frequencies of genotypes were calculated as follows: for PLG1 gene 0.71 and for PLG2 gene -0.29. PLG system in the Polish population was confirmed to be in a state of genetic equilibrium. The frequencies of PLG genes in the Polish population do not deviate from the frequencies encountered in other European populations. PMID- 3834882 TI - Natural killer (NK) activity in normal donors undergoing leukapheresis. AB - The effect of leukapheresis performed with intermittent flow blood separator on normal donors NK activity is presented. There was statistically significant decrease of NK activity immediately after leukapheresis (p less than 0.001) which did not return to predonation values 1 day after leukapheresis (p less than 0.05), however, none of the donors values fell outside the normal range. It seems that NK cells are not as quickly replaced as T lymphocytes. PMID- 3834883 TI - The effect of thymectomy on immunological tolerance to human serum albumin in chickens. AB - The effect of thymectomy performed on the day of hatching has been studied in chickens rendered tolerant by 100 mg of HSA injected also on the day of hatching. After challenge at the age of 6 and 9 weeks, no significant difference was observed between the group of tolerant chickens, in which the thymectomy was complete or incomplete, and the non-operated tolerant one. The delayed recovery from tolerance observed in mammals was not seen even in chickens in which thymus was removed completely and no thymic residue remained. The anti-HSA antibodies were even slightly higher in thymectomized birds than in the non-operated ones but the difference was statistically non-significant. PMID- 3834884 TI - Production of immunoglobulins and alloantibodies by lymphocytes from lung cancer patients. AB - Spontaneous and PWM stimulated production of immunoglobulins (Igs) were measured in culture of lymphocytes isolated from peripheral blood (PBL) of lung cancer patients, blood donors and patients with benign lung diseases. Culture supernatants were tested for antibody activity against lung cancer cells and normal cells and some of them were absorbed with normal lung cells and fetal liver cells. Igs levels and antibody activity in culture supernatants were measured by radioimmunometric assay. Significantly increased level of Igs in unstimulated culture of PBL and low index of PWM-stimulated production of Igs was found in lung cancer patients in contrast to the controls. Supernatants of PBL cultures from lung cancer patients had significant low antibody activity to lung cancer cells and were effectively absorbed by normal lung cells and fetal liver cells. The results suggest in vivo polyclonal activation of B cells in patients with lung cancer and simultaneously diminished production of alloantibodies with some features of natural antibodies following polyclonal activation in vitro. PMID- 3834885 TI - Regenerating rib cartilage tentatively used as a source of chondrocytes for transplantation. AB - In search for cartilage which could serve as a source of chondrocytes for autogeneic transplantation in mature individuals we studied the morphological appearance and digestibility of normal rib cartilage and regenerated cartilage formed after subperichondrial removal of the former in adult dogs. Cells liberated after collagenase digestion were transplanted intramuscularly to see whether they will reconstruct cartilage similarly as it happens after transplantation of fetal chondrocytes. Chondrocytes in normal rib cartilage were arranged in three zones and lay in large isogenous groups. Collagenase dissolved only the peripheral zone. Isolated cells did not reconstruct cartilage after transplantation. No distinct zones could be seen in regenerated cartilage. Chondrocytes lay singly or in pairs but were not numerous. Regenerated cartilage could be completely dissolved by collagenase, but the yield of cells was low owing to their low content in digested material. After transplantation chondrocytes from regenerated cartilage reconstructed cartilage in one out of ten transplants. The possibility of increasing the cellularity of regenerated cartilage by stimulation of the perichondrium with factors known to promote chondrocyte growth in vitro is discussed. PMID- 3834886 TI - Shark myoglobins. II. Isolation, characterization and amino acid sequence of myoglobin from Galeorhinus japonicus. AB - Native oxymyoglobin (MbO2) was isolated from red muscle of G. japonicus by chromatographic separation from metmyoglobin (metMb) on DEAE-cellulose and the amino acid sequence of the major chain was determined with the aid of sequence homology with that of G. australis. It was shown to differ in amino acid sequence from that of G. australis by 10 replacements, to be acetylated at the amino terminus and to contain glutamine at the distal (E7) residue. It was also shown to have a spectrum very similar to that of mammalian MbO2. However, the pH dependence for the autoxidation of MbO2 was seen to be quite different from that of sperm whale (Physeter catodon) MbO2. Although the sequence homology between sperm whale and G. japonicus myoglobins is about 40%, their hydropathy profiles were very similar, indicating that they have a similar geometry in their globin folding. PMID- 3834887 TI - Effects of zinc deficiency on the wool growth, skin and wool follicles of pre ruminant lambs. AB - Two groups of 1-month-old pre-ruminant lambs of similar mean liveweights were fed identical liquid milk-replacer diets except that the zinc contents were either 5 micrograms (deficient diet) or 32 micrograms per gram of dry matter (control diet). These diets were fed for 4 weeks, after which all the lambs received the control diet for 2 weeks. In the lambs fed the deficient diet plasma zinc concentration decreased markedly during the first 2 weeks and skin lesions developed around their mouths. Autophagic vacuoles also developed in most follicle bulbs along with a variety of defects in the wool fibres and progressive inhibition of wool growth. Food intake and liveweight increase were not significantly depressed until the third and fourth weeks of feeding the deficient diet. During this period the wool was shed from the zinc-deficient lambs as a result of the fibres being degraded and distorted within thickened outer root sheaths in the distal (upper) parts of the follicles. In addition, the epidermis of the wool-bearing skin became slightly acanthotic and hyperkeratotic, although not parakeratotic. When the deficient lambs were fed the control diet for 2 weeks, their food intake, liveweight gain and plasma zinc concentration increased to almost those of the control lambs, but their rate of wool growth was still low and the epidermis had not returned to normal. Compared with previous studies the findings of this study suggest that pre-ruminant lambs may be more susceptible to the effects of zinc deficiency than ruminant lambs. PMID- 3834888 TI - Provisional mapping of the gene for a cell surface marker, GA-1, in the red necked wallaby Macropus rufogriseus. AB - A series of M. rufogriseus-mouse somatic cell hybrids was constructed and analysed cytologically, enzymatically and immunologically. A monoclonal antibody, GA-1, was prepared against an M. rufogriseus cell surface antigen on an M. rufogriseus-mouse somatic cell hybrid. A gene determining the expression of this antigen was provisionally assigned to the long arm of the M. rufogriseus chromosome 3. The monoclonal antibody also reacted with an M. rufus (red kangaroo)-mouse somatic cell hybrid containing only the M. rufus chromosome 5, the G-banded chromosome identical to M. rufogriseus 3q. The results also suggest synteny of the genes for the marsupial enzymes hypoxanthine phosphoribosyltransferase and phosphoglycerate kinase-A. PMID- 3834889 TI - Flow cytometry and flow sorting of metaphase chromosomes from the dasyurid marsupial Dasyurus viverrinus. AB - Metaphase chromosomes (2n = 14) from D. viverrinus were analysed by flow cytometry and flow sorted into six homogeneous groups. Relative chromosomal DNA contents and distribution frequencies of the groups corresponded closely with values for the karyotype obtained by conventional methods. PMID- 3834890 TI - Effect on wool growth of thyroxine replacement in thyroidectomized merino rams. AB - The effect on wool growth of thyroidectomy with subsequent thyroxine replacement at subnormal and supranormal levels has been investigated in Merino rams fed a restricted basal diet. Thyroidectomy without thyroxine replacement caused a greater than 60% reduction in wool growth. Provision of 30% of normal plasma thyroxine concentrations was sufficient to return wool growth to normal. Similarly, complete replacement of plasma thyroxine levels gave normal wool growth while increasing thyroxine concentrations to three times normal increased wool growth to levels slightly above normal. These results provide a possible explanation for the inability of other workers to correlate seasonal thyroxine patterns and annual wool growth variations. PMID- 3834892 TI - Quantitative studies of compensatory testicular hypertrophy following unilateral castration in the boar. AB - Unilateral castration of Large White X Landrace boars at monthly intervals up to 5 months of age, with the remaining testis being removed 2 months later, resulted in compensatory hypertrophy of the testis which decreased with age. In pigs 3 and 4 months old there was significant hypertrophy of the testis but at 5 and 7 months of age testicular weight of the hemicastrates did not differ significantly from control values. The increase in the testicular weight of unilaterally castrated pigs was correlated with an increase in the number of Sertoli and germ cells at 3 months of age and germ cells at 4 months of age occupying the seminiferous epithelium. This was correlated with increased total seminiferous tubule length and larger cross-sectional area of the tubule. Sertoli cell occupancy did not differ significantly between unilaterally castrated and intact boars. PMID- 3834891 TI - Influence of environmental factors on the metabolism of glucose by preimplantation mouse embryos in vitro. AB - The metabolism of glucose by late preimplantation mouse embryos was studied in a variety of media whose composition had been changed to reflect the environmental conditions in the uterus more closely than do standard culture media. The effects of combinations of energy substrates, the presence or absence of amino acids and the level of potassium in the medium were investigated. The use of energy substrates for in vitro culture at levels present in the uterine environment resulted in rates of synthesis and degradation of glycogen pools similar to those obtained using standard in vitro culture conditions but elevated incorporation into non-glycogen macromolecules. Amino acids influenced the metabolism of glucose by limiting the entry of glucose carbon into the non-glycogen macromolecular pool and directing more glucose into the synthesis of acid-soluble glycogen. Increasing the K+ concentration to 60 mM in the culture medium caused a small but significant increase in the number of eight-cell embryos degenerating during culture for 24 h but the metabolism of glucose was unaffected over this time. At the time of morula transformation to the blastocyst this level of potassium ions suppressed glycogen synthesis by 50% over 5 h but did not affect its turnover during chase culture. It is concluded that factors other than those studied here contribute to the maintenance of the low glycogen levels found in uterine embryos. PMID- 3834893 TI - The clinical significance of the tympanic isthmus related to the development of cholesteatoma. AB - The epitympanum is separated from the mesotympanum by the ossicles, tendons and tympanic mucosal folds except at two narrow openings, the anterior and posterior tympanic isthmuses. Using large numbers of fresh cadaver temporal bone specimens, anatomical boundaries of the tympanic isthmus were defined and pathological variations were investigated in relation to the development of aural cholesteatoma. A total of 170 temporal bone specimens were examined under the operating microscope. Five of these were found to have middle ear diseases, most of which were cholesteatoma or a preliminary state of cholesteatoma, with their tympanic isthmuses obstructed or narrowed. Pneumatization of the mastoid was inhibited in all of the pathological specimens. From the results of temporal bone dissection supplemented by analysis of surgical findings in cholesteatoma, we have divided acquired cholesteatoma into two types: the pars flaccida-type cholesteatoma (attic retraction-type) and the pars tensa type. The close relationship between the development of cholesteatoma and occlusion of the tympanic isthmus is examined herein. PMID- 3834894 TI - Iatrogenic ossicular injury in an autistic child. AB - A 5-year-old autistic child inserted a grain of oiled popcorn into his right ear canal. Forcible removal of the foreign body in an emergency room while the child was held down resulted in severe ossicular injury. This case well illustrates the danger in removing foreign bodies from the ear of a child without anesthesia. The danger becomes greater when the child is autistic. Ossicular injury, when it happens in such a case, may become quite severe. Treatment of an autistic child presents another difficult problem. PMID- 3834895 TI - A case of aural gnathostomiasis. AB - A young Thai woman was afflicted with aural gnathostomiasis. The only symptom she had was sudden intermittent otalgia without apparent hearing loss, tinnitus, vertigo or otorrhea. Presumptive diagnosis was made from the recent history of ingesting raw fish with subsequent migratory swellings. Definite diagnosis rested on identification of the worms, pertinent eosinophilia and positive skin test. This case was different from those previously reported because it was a primary aural gnathostomiasis without neurological involvement. PMID- 3834896 TI - Recent development of the study on clinical significance of abnormal eye movement. AB - As a general trend, the diagnosis in medical clinics often depends on laboratory test results. Neurotological diagnosis, however, requires detailed neurological examinations on a patient by a neurotologist. Therefore, there are differing diagnostic skills among physicians, and there is a kind of "man-made flavor" in neurotological diagnostic procedure. In the present study, current development in the knowledge on the clinical diagnostic significance of pathological eye movement during the last 2-3 years is summarized. Acquired pendular wondering eye movement. Fixation jerks. Spontaneous and transitory eyeball burst or seizure. Vertical rebound nystagmus. Optokinetic vertical ocular dysmetria. Divergence nystagmus. Counterolling, pure rotatory positioning nystagmus. Inversion of optokinetic after-nystagmus (OKAN). Vertical congenital nystagmus and inversion of optokinetic nystagmus (OKN). Treatment of congenital nystagmus. Vertical spontaneous nystagmus to lower eyelid or so-called "downbeat nystagmus." Downbeat nystagmus seen in bilateral labyrinthine dysfunction. The significance of bilateral vestibular lesion, or symmetric lesion in other is emphasized in the present report for reader's reference and criticism. Our experience on the clinical significance of the abnormal eye movement was reported. It is our wish that accumulation of data on important cases along with the results of experimental studies directly connected with clinical medicine may contribute to the progress of our neurotology in the right direction as "neurology of the posterior fossa." PMID- 3834897 TI - Intubation for the membranous laryngotracheobronchitis. AB - A 49-year-old housewife with membranous laryngotracheobronchitis (the membranous croup) was referred to our clinic because of difficulty in breathing. Instant intubation in the emergency room did not relieve her breathing trouble, thus, following emergency tracheostomy accompanied by irrigation with mucolytic agents and antibiotics proved effective. Preceding intratracheal intubation made the patient suffocate because it induced membranous debris to detach and become lodged in the tracheal wall. In addition, dryness seemed to worsen her respiratory distress, thus high humidification was felt to be instrumental in relieving her symptoms. No pathological bacteria were found in specimens detached from the tracheal wall. PMID- 3834898 TI - A survey of ovine dermatophilosis in Western Australia. AB - A random sample of 200 Merino sheep owners was interviewed by telephone during April 1983 and asked questions relating to the prevalence of ovine dermatophilosis in their flocks, methods used for prevention and treatment of dermatophilosis, management strategies employed and the location and annual rainfall of each farm. The response rate was 99.5%. During the previous 12 months 62.3% of farmers had observed dermatophilosis in their flocks. The prevalence within flocks was highest in hoggets (mean 2.2%, range 0 to 75%) followed by lambs (mean 0.8%, range 0 to 25%), ewes (mean 0.6%, range 0 to 20%) and wethers (0.2%, range 0 to 20%). The mean weight of wool identified as affected by dermatophilosis was 58 kg (range 0 to 882 kg). Preventive measures were used on 57% of farms and the most common methods were changes in dipping practice (23.6%) and culling of affected sheep (21%). An average of 13.7 sheep per farm were culled for dermatophilosis and of these, 82% were sold and the remainder (18%) were killed on the farm. Antibiotics, of which most were combinations of penicillin and streptomycin were used to treat dermatophilosis on 8.5% of farms and treatments other than antibiotics were used on 10% of farms. The prevalence of dermatophilosis and its relationship to various environmental and management factors varied with the age and sex of sheep. Discriminant analysis indicated that of the factors studied, average annual rainfall, month of lambing, average fibre diameter and the month ewes were shorn were related to the prevalence of dermatophilosis in lambs.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3834899 TI - The effect of season on reproduction in dairy cattle. AB - A survey was carried out in North West Tasmania to compare the breeding performance of 2,068 cows in 27 dairy herds--15 herds calving in spring and 12 in autumn. The percentage of cows submitted to artificial insemination for the first time in the first 24 days of the mating period was 87% for the spring calving group and 75% for the autumn calving group. Figures for non-return-to-service rate over the subsequent 21 days were 72% and 55%, respectively. The difference in breeding performance associated with time of calving was not attributable to age, calving to mating interval or on cow condition or daily milk fat yield at 3 weeks (+/- 1 week) after the start of mating. PMID- 3834900 TI - The southward spread of buffalo fly (Haematobia irritans exigua) in eastern Australia and its survival through a severe winter. AB - The southward spread of buffalo fly (Haematobia irritans exigua) in coastal eastern Australia from Bororen, Queensland in 1974 to Coffs Harbour, New South Wales in 1982 is documented. Surveys after a cold, dry winter in 1982 recorded overwintering sites and subsequent spread of flies in southern Queensland and northern New South Wales. Buffalo fly overwintered at several places in the Maryborough-Bauple districts and further north. Overwintering also occurred in the Currumbin Valley-Mudgeeraba area on the Queensland-New South Wales border. Other infestations detected early in the season and believed to have arisen from local overwintering populations were observed at Kin Kin, Mount Tamborine and Flinders Peak. By May 1983 flies had recolonised much of coastal south eastern Queensland, and as far south as Ballina and west to the Richmond Range in New South Wales. Implications of these findings for control are discussed. PMID- 3834901 TI - Isolation of Bordetella avium from poultry. AB - Four Australian isolates of Gram-negative nonfermentative bacteria obtained from poultry were compared with reference strains of Bordetella avium, Bordetella bronchiseptica and Alcaligenes faecalis. The Australian isolates were identified as Bordetella avium. A routine procedure for the identification of this recently recognised poultry pathogen is described. PMID- 3834902 TI - Identification of species of fish by gradient-gel electrophoresis. AB - An electrophoretic method is described for distinguishing between fish fillets according to their protein composition. Thaw fluid (4 microL) was applied to one of 14 sample positions of a precast gel, containing a gradient of polyacrylamide of either 2.5 to 27% or 3 to 40%. All reagents and gels are commercially available in ready-to-use form. Either gel provided a distinction between any of the 42 fish types, but the 3 to 40% gel gave better identification because of its superior molecular-sieving properties. Reproducible electrophoretic patterns were obtained for different samples of the same fish type, but small differences were shown for fish of widely different origin, for example Australian and New Zealand ling. PMID- 3834903 TI - Porcine atrophic rhinitis. AB - In snouts of pigs from 5 of 8 piggeries in New South Wales examined, there was evidence of severe atrophic rhinitis. In 220 pigs examined from one piggery there was no correlation between the severity of atrophic rhinitis and growth rate or back-fat thickness. There was also no correlation between the extent of lung pathology and back-fat thickness. Pleurisy or pericarditis did cause a significant reduction in growth rate. PMID- 3834905 TI - Feline cerebral phaeohyphomycosis associated with Cladosporium bantianum. PMID- 3834904 TI - Pyrrolizidine alkaloid poisoning in calves due to contamination of straw by Heliotropium europeum. PMID- 3834906 TI - Evaluation of the effect of tiamulin hydrogen fumarate fed at 25 ppm on performance responses of pigs infected with enzootic pneumonia. PMID- 3834907 TI - An abbatoir survey of the prevalence of caseous lymphadenitis in feral goats in Western Australia. PMID- 3834908 TI - Isolation of a new bovine ephemeral fever group virus. PMID- 3834909 TI - Suspected histoplasmosis capsulati of the intestine in a dog. PMID- 3834910 TI - Ultrastructural changes in sperm from rams with epididymitis. PMID- 3834911 TI - Erysipelothrix rhusiopathiae vegetative endocarditis in a horse. PMID- 3834912 TI - Goats and sheep are mixed feeders. PMID- 3834913 TI - Aetiology and pathogenesis of mucosal disease. PMID- 3834914 TI - Group rearing abolishes hyperdefensiveness induced in weanling rats by lateral septal or medial accumbens lesions but not by medial hypothalamic lesions. AB - Lesions of the medial hypothalamus, medial accumbens, or septum were made in 21- to 25-day-old male hooded rats. Half of the animals in each group were subsequently reared in groups and the other half in isolation. When tested for defensiveness toward the experimenter at 31, 34, and 37 days postoperatively, rats with medial hypothalamic lesions were most hyperdefensive toward the experimenter if reared in isolation but were significantly more defensive than sham-lesioned animals even when reared in groups. Rats with septal lesions were significantly more defensive than sham-lesioned animals only when reared in isolation while rats with medial accumbens lesions were not different from controls whether reared individually or in groups. These results suggest that the medial hypothalamus may have a special importance in determining temperament since the hyperdefensiveness that results from interference with its functioning is resistant to experiential remediation. PMID- 3834915 TI - Heart-rate responses of infant rats and guinea pigs to stimulus onset and offset: tests of the generality of a bidirectional effect. AB - To test the generality, across modality and across species, of a bidirectional effect of photic stimulation in infant rats found in previous experiments, two experiments examined the effects on heart rate (HR) of onset and offset of auditory stimulation in rats and of photic stimulation in guinea pigs. Experiment 1 demonstrated a unidirectional, decelerative response in rats 17 and 21 days of age to the onset and offset of a 1-kHz tone, at both low (80 dB) and high (100 dB) intensity levels and at 14 days to the onset of the high-intensity tone. Experiment 2 demonstrated that infant guinea pigs, which unlike infant rats are precocial and not nocturnal, responded to the offset but not to the onset of light, and that this response was decelerative. These results indicated a lack of generality of the bidirectional HR effect, and were discussed in terms of the orienting/defensive reflex distinction. PMID- 3834916 TI - Aversion conditioning and enhanced neophobia: role of test stimuli. AB - In Experiment 1, 100 rats (Rattus norvegicus) received 10% sucrose or 5% casein hydrolysate followed, after 10 min, by a LiCl or saline injection or, after 12 h, by a LiCl injection. Subsequently, rats received aversion testing to the CS or neophobia testing to the opposite novel flavor. Aversion effects were reliably greater to casein than to sucrose. However, conditioning with sucrose yielded a reliably greater increase in neophobia to casein (relative to controls) than conditioning with casein yielded to sucrose. In Experiment 2, 60 rats received distilled water followed, after 10 min, by LiCl or saline injection or, after 12 h, by LiCl injection. Aversion effects occurred to distilled water. Neophobia testing to casein and sucrose showed that, relative to controls, neophobia increased reliably more to casein. The results of Experiments 1 and 2 were not attributable to differences in baseline intakes between casein and sucrose flavors. Together, these experiments indicated that the demonstration of conditioning-enhanced neophobia may depend more on the characteristics of the neophobia test flavor than on the strength of aversion established because of CS characteristics. PMID- 3834917 TI - Postaggression footshock inhibits aggressive behavior in dominant but not in isolated mice. AB - Aggressive behavior of dominant and isolated mice was assessed in intermale encounters with nonaggressive intruder mice. After an attack period of 90 s, the aggressor was exposed to a footshock punishment and retested the next day. The shock treatment, independent of the intensity and duration, failed to inhibit spontaneous aggression in isolated DBA/2 mice, while it significantly suppressed spontaneous aggression in dominant C57BL/6 mice. The different effects of post trial shock punishment were not due to a different shock sensitivity and did not depend on the type of opponent used. Strain differences have been ruled out by the use of dominant and isolated ICR mice. Again, shock punishment was ineffective in isolates, while it reduced aggression in dominant animals. The findings were discussed with reference to the impaired learning performance reported for isolated animals, and suggest a difference between the aggression of isolated and that of dominant mice. PMID- 3834918 TI - Effects of social isolation in adulthood on odor preferences and urine-marking in male rats. AB - Male rats isolated for 60 days in adulthood spent less time investigating odors of females and urine-marked less over these odors than did males kept in groups of three. Isolated males did not differ from grouped males in their responses to odors of unfamiliar males or their own odors. After social experience the isolated males showed an increase in urine-marking but no change in odor preferences. Individual housing therefore appears to alter olfactory communication in the same way that it does other social behaviors and these changes may be mediated by the same mechanisms. PMID- 3834919 TI - Depletion of brain norepinephrine with DSP-4 does not alter acquisition or performance of a radial-arm maze task. AB - The acquisition of a radial-arm-maze task was unimpaired following administration of DSP-4, a selective noradrenergic neurotoxin. Maze performance remained unaffected when 5- or 30-min delays were imposed between the fourth and the fifth arm selection. Neurochemical analysis performed 90 days after injection revealed that DSP-4 significantly decreased concentrations of norepinephrine in the hippocampus, cortex, and cerebellum. The regional concentrations of dopamine and serotonin were not affected. These data are consistent with previous reports demonstrating that depletion of brain norepinephrine does not impair spatial learning and memory. PMID- 3834920 TI - The effect of training procedures on fixed-interval responding following septal lesions in rats. AB - Two experiments were conducted to assess the effects of training procedures on fixed-interval (FI) performance of rats with septal lesions. In Experiment 1, rats with septal lesions that had extensive preoperative FI experience responded at higher rates than did control rats in early periods of the FI and at lower rates during the later period of the FI for the first 10 sessions after surgery. Their subsequent FI behavior became equivalent to that of control rats. In Experiment 2, septal rats that were trained on an FI schedule of reinforcement entirely after surgery by gradually increasing the FI requirements had FI performance equivalent to that of rats with control operations. The results suggest that septal lesions result in a transient disruption in the FI performance of rats with previous FI experience without affecting the acquisition of appropriate FI behavior. PMID- 3834921 TI - Analysis of the catnip reaction: mediation by olfactory system, not vomeronasal organ. AB - Pet owners and behavioral scientists alike are fascinated by unique behavioral reactions that cats show in the presence of catnip. These experiments explored the possibility that the catnip reaction might be triggered by chemosensory stimulation of the vomeronasal organ. In the chewing and mouthing of the catnip source, substances might be dissolved in saliva and transported to the vomeronasal organ. The rolling and rubbing during a catnip reaction might be a sexual response activated by the accessory olfactory system since the system projects to parts of the brain involved in mediation of sexual behavior. However, removal of the vomeronasal organ did not attenuate any of the behavioral reactions to catnip. Olfactory bulbectomy immediately eliminated catnip responding, revealing that the chemosensory stimulus evoking the catnip reaction is undoubtedly mediated through the main olfactory system. Catnip activates behavioral elements associated with several species-specific behaviors, including sniffing and chewing as associated with oral appetitive behavior, rolling and rubbing characteristic of female sexual behavior, batting the catnip source characteristic of play behavior, and a type of kicking associated with predatory behavior. These behavioral reactions occur randomly and intermittently. PMID- 3834922 TI - Suppression of corticosterone synthesis alters the behavior of hippocampally lesioned rats. AB - The suppression of corticosterone synthesis with metyrapone (25 mg/kg) reduced the hyperactivity and altered the exploratory activity of hippocampally lesioned animals (HPC) in the open field to the level of cortical and sham controls (Experiment 1). In a second experiment, corticosterone (600 micrograms/kg) pretreatment 2 h, but not 1 h, before metyrapone partially restored the hyperactivity of HPC animals that had been decreased by the corticosteroid suppressant drug. Alterations in exploratory behavior induced by metyrapone were also prevented by corticosterone pretreatment. The results suggest that the suppression of corticosterone in hippocampally lesioned animals produces a normalization of behavior that can be prevented by pretreatment with corticosterone. PMID- 3834923 TI - Aversive stimulus properties of morphine: evaluation using the drug preexposure conditioned taste aversion paradigm. AB - Interpretation of the finding that positive-reinforcing drugs such as morphine also possess possible aversive properties, as revealed by their ability to induce a conditioned taste aversion (CTA), remains problematic. This issue was addressed in the present study using the drug preexposure CTA paradigm. Water-deprived rats were given noncontingent preexposure to one of three doses of morphine (2.5, 5.0, or 15.0 mg/kg) or drug vehicle. Subsequently, animals in each of these preexposure groups were presented with a novel 0.1% saccharin-flavored solution followed immediately by injection with one of the same three morphine doses or drug vehicle. This procedure was repeated at 5-day intervals until six saccharin presentations had been performed. Results indicated that while the three morphine doses were differentially potent as taste aversion-conditioning agents, they were equipotent as preexposure agents serving to disrupt CTA. These data suggest that preexposure to morphine's predominantly positive-reinforcing (and non-CTA inducing) properties is sufficient for preexposure disruption of subsequent morphine CTA. A second experiment indicated that the minimal effective preexposure dose is between 0.3 and 1.25 mg/kg of morphine. It is suggested that an important commonality may exist between the discriminative stimulus properties of morphine as a CTA-inducing agent and as a positive reinforcer. PMID- 3834924 TI - Further evaluation of morphine aversion: maintenance of a taste aversion using a low, nonaversive morphine dose. AB - Previously, in an investigation of morphine-conditioned taste aversion (CTA), we found that limited preexposure to a low, nonaversive (non-CTA-inducing) dose of morphine (2.5 mg/kg) was as effective as preexposure to a higher, CTA-inducing dose (15 mg/kg) in blocking the formation of a subsequent morphine CTA. In the present study, we examined the capacity of this low, 2.5-mg/kg morphine dose to maintain a CTA initially induced by the 15-mg/kg dose. A standard CTA procedure was used. Results indicated that rats given three initial taste-drug pairings with 15 mg/kg morphine followed on subsequent pairing days by treatment with the low, non-CTA-inducing, 2.5-mg/kg dose continued to exhibit a strong CTA over 8 pairing days. A similar pattern was observed for animals continuing to receive taste-drug pairings with the 15-mg/kg dose. Animals receiving only one taste-drug pairing with the 15-mg/kg dose, followed on subsequent pairing days by 2.5-mg/kg conditioning, failed to show such a pattern of CTA. An intermediate CTA pattern was seen with animals conditioned with 15, 10, 5, and repeated 2.5-mg/kg doses over consecutive pairing days. These data suggest that exposure to a low dose of morphine, with no apparent CTA-inducing properties, is sufficient to maintain a previously established morphine taste aversion. Potential implications for understanding the apparent discriminative complexity of morphine's motivational properties are discussed. PMID- 3834926 TI - Cell fusion between L-forms and protoplasts of Staphylococcus aureus. AB - Mixtures of various combinations of Lysostaphin protoplasts and stable L-forms of Staphylococcus aureus, which have different markers for drug resistance, were treated with polyethylene glycol (PEG) to examine the development of doubly resistant fusion products (fusants). To recover doubly resistant colonies as L forms, they were incubated in 4.5% NaCl-brain heart infusion (BHI) broth containing penicillin G (PCG) for enrichment culture and cultured in PCG-4.5% NaCl-BHI agar medium (method 1), while to recover doubly resistant fusants as L forms and coccal forms, they were grown on reversion medium (R medium) which causes reversion of protoplasts or fusants to parent type cells, and then cultured on assay media, i.e., R medium, BHI agar medium or PCG-4.5% NaCl-BHI agar medium (method 2). Under both experimental conditions, doubly resistant fusants developed as L-form cells by PEG treatment of pairs of protoplasts carrying the chloramphenicol (CP)-resistance plasmid and L-forms having chromosomal resistance to streptomycin (SM). In the reverse combinations, i.e., protoplasts showing chromosomal SM-resistance and L-form cells carrying the CP resistance plasmid, the first method gave no doubly resistant colonies. By the second method, without enrichment culture on R medium, the latter combination gave doubly resistant fusants as L-form, coccal-type and mixed-type colonial forms, while when the PEG-treated mixture was enriched on R medium, fusants were obtained exclusively as the coccal type on either R medium or BHI agar assay medium. Neither of the methods yielded colonies of doubly resistant fusants on PEG-treatment of pairs of protoplasts and L-forms both of which were chromosomal, but with different drug resistances. These results show that PEG-induced cell fusion between protoplasts and L-forms of S. aureus, unlike the fusion between protoplasts or between L-forms, resulted in transfer of the drug resistance controlled by the plasmid to the fusion products. The fusants obtained were L forms in method 1, and coccal type in the method 2. PMID- 3834925 TI - Differential ethanol olfactory experiences affect ethanol ingestion in preweanlings but not in older rats. AB - Preweanling (21 days old) and adult (60-80 days old) rats were exposed to ethanol odor either paired with the early stages of apomorphine-induced toxicosis, paired with the recovery from toxicosis, or unpaired with the induction of distress. Twenty four hours later, ethanol preferences were measured in a spatial olfactory test (ethanol vs lemon odor) or a drinking test (5.6% v/v ethanol vs 0.25% w/v citric acid solutions). During the olfactory test both young and adult rats expressed substantial ethanol odor aversions when previously exposed to this odor paired with toxicosis. However, changes in ethanol intake became apparent only in preweanling subjects. Preweanlings which received the ethanol odor paired with illness drank significantly less of the ethanol solution relative to controls, while subjects experiencing the odor paired with recovery from distress significantly increased their consumption of the ethanol solution. These prior aversive and appetitive olfactory experiences had no effect upon ethanol intake in adult rats. These results implicate both an ontogenetic and a sensorial factor in the regulation of ethanol intake. PMID- 3834927 TI - Toxicity of phencyclidine and ethanol in combination. AB - The role of ethanol in phencyclidine-related death and loss of motor co ordination was studied in male ICR albino mice. LD50s, and ED50s for loss of righting reflex, and for the "rotarod" test were determined for each drug in the presence of various doses of the other. Isobolograms (plots of equieffective dose combinations) of these LD50s and ED50s showed that low doses of ethanol reduced the LD50 of phencyclidine (PCP) by about 20%, while higher doses (1-3 g/kg) of ethanol were without further effect. In contrast to effects on lethality, there was synergism (potentiation) of loss of motor co-ordination. Doses of ethanol above 1 g/kg reduced the ED50 of PCP for loss of righting from about 60 mg/kg to 1-3 mg/kg. Similarly, low doses of PCP (less than 40 mg/kg) reduced the ED50 of ethanol from 3 g/kg to 1 g/kg. There was a slight but consistent synergism between the drugs in the rotarod test over the range of effective doses (0.25 2.0mg/kg PCP and 0.1-1.2 g/kg ethanol). It is concluded that consumption of ethanol does not greatly increase the risk of death from PCP overdose; however the severe adverse effects on motor co-ordination of moderate doses of PCP together with moderate doses of ethanol are greatly potentiated by doses of the other drug. It is estimated that commonly used doses could result in total loss of motor ability, which could explain the prevalence of accidental deaths (especially drowning) when PCP and ethanol have been consumed together. PMID- 3834928 TI - Effect of prenatal ethanol exposure on activity and shuttle avoidance behavior in adult C57 mice. AB - Although the morphological teratogenic actions of ethanol have been well established in mice, studies on the behavioral teratogenic effects of alcohol have been primarily conducted with rats. The purpose of this study was to examine the behavioral effects of prenatal alcohol exposure in C57 mice, a strain known to be highly sensitive to the teratogenic actions of ethanol. Pregnant mice were administered a liquid diet containing 25% ethanol-derived calories (EDC) from day 5 through day 18 of gestation. Control animals were pair-fed an isocaloric 0% EDC diet during the same period of time, with sucrose substituted for ethanol. At 23 days of age, offspring were tested for spontaneous locomotor activity in an open field. At 70 days of age, different offspring were tested in a shuttle-avoidance task. The results demonstrated that the 25% EDC progeny were more active than controls. In addition, prenatal alcohol exposure produced a deficit in acquisition and performance of a shuttle-avoidance task. Alcohol-treated offspring made fewer avoidance responses and required more trials to reach a criterion performance of 10/10 avoidances consecutively followed by at least 9/10 avoidances. These results importantly contribute to the development of an animal model of Fetal Alcohol Syndrome in which both the behavioral and morphological consequences of prenatal alcohol exposure may be assessed in the same species. PMID- 3834929 TI - WHO/Nordic Council for Arctic Medical Research Working Group on Problems of Family Health in Circumpolar Regions. Ilulissat/Jakobshavn, Greenland, April 20 22, 1985. PMID- 3834930 TI - Acculturation among circumpolar peoples: implications for health status. PMID- 3834931 TI - Cultural change and health consequences in Inuit. PMID- 3834932 TI - Educational problems in Greenland. PMID- 3834933 TI - High-risk children in Greenland. PMID- 3834934 TI - Socialization, family conflicts and responses to culture change among Canadian Inuit. PMID- 3834935 TI - Suicide in Greenland. PMID- 3834936 TI - Criminal homicide in Greenland. PMID- 3834937 TI - Violence in Greenland. PMID- 3834938 TI - Mortality studies in Greenland. Regional differences in alcohol related deaths and infant mortality. PMID- 3834939 TI - Problems of family health in circumpolar regions. Report on a WHO/NCAMR Working Group Ilulissat/Jakobshavn, Greenland April 20-22, 1985. PMID- 3834940 TI - Family health and the child in Greenland. PMID- 3834941 TI - Problems in families with an "absent father". PMID- 3834942 TI - Alaska native 'grass roots' movement: problem solving utilizing indigenous values. PMID- 3834944 TI - A family health intervention model. PMID- 3834943 TI - Family health in Greenland--as the social authorities see it. PMID- 3834945 TI - Score systems in perinatal medicine. AB - Details of some common scoring systems in use for perinatal medicine are outlined. Their advantages and limitations are briefly discussed. PMID- 3834946 TI - Comparison of the serum protein binding of digoxin in premature and mature newborns, infants and adults. AB - Infants require higher therapeutic doses (per unit body weight and surface area) and also tolerate higher doses of digoxin than adults. In contrast premature and even mature newborns are more susceptible to digoxin intoxications. Serum protein binding contributes to the apparent volume of distribution. Since the volume of distribution for digoxin shows an age-dependency, the present study was designed to determine the plasma protein binding of digoxin in premature and mature newborns as well as in infants and adults. Using the equilibrium dialysis method the fraction of digoxin bound to serum protein averages 30% in all groups studied. Thus protein binding could not account for the differences in dosage and susceptibility of digoxin in newborns and infants as compared to adults. PMID- 3834947 TI - Renal clearance of amino acids in pregnancy complicated by preeclampsia. AB - Renal clearance of most amino acids was increased in the third trimester of pregnancy. The greatest change was with glycine, where clearance increased thirteen-fold and the plasma level decreased. No difference in renal clearance of amino acids was demonstrated in four patients with proteinuric hypertension when compared with that in normal pregnancy. Progesterone, given to non-pregnant women, caused a fall in mean plasma glycine. This was associated with increased renal clearance in 2 out of 3 women, and indicates that progesterone may contribute to the increased renal excretion of some amino acids in pregnancy, probably acting selectively on tubular reabsorption. PMID- 3834948 TI - Hyperprolactinemia and its effect on female sterility. AB - Starting with the isolation and purification of human prolactin, several studies have been conducted in order to understand prolactin (PRL) physiology and pathology in the human. Results of research effected since then have shown that high levels of PRL could cause sterility either through its effects on ovulation at the hypothalamic, hypophyseal or gonadal level or through the inhibition of steroid synthesis in the ovaries which leads to amenorrhea. In parallel with these findings, bromocriptine, a dopamin agonist inhibiting PRL secretion has been used in the clinic for the treatment of hyperprolactinemic states and the positive results obtained confirmed the role of PRL in human reproduction. The aim of our study is to investigate the causative mechanisms of sterility in hyperprolactinemic patients. For this purpose, in hyperprolactinemic cases with sterility a possible correlation between the PRL values and endometrial changes is investigated. Our findings indicate that effects of PRL on the receptors of distal organs show individual variations and depend on the degree of receptor sensitivity. It is believed that the effects of PRL through receptor mediation deserve further investigation. PMID- 3834949 TI - Growth-promoting activity of serum throughout pregnancy and at delivery: evaluation by three different bioassays. AB - Somatomedin evolution has been studied by employing three different bioassays in 181 pregnant women from the 7th week of gestation to delivery and in 18 women during the course of labor. In 105 additional mothers of full-term or pre-term neonates a significant increase of a serum growth-promoting activity (thymidine activity) was observed at delivery, as compared to nonpregnant controls, with a progressive return to normal levels in the post-partum period. Different results were found according to the assay method used, suggesting the multiplicity of growth factors and specific adaptations related to the stages of pregnancy. PMID- 3834950 TI - Increased retraction of fibrin clots by endothelial cells of infants of diabetic mothers. AB - Cultured endothelial cells (EC) from the umbilical veins of infants of non diabetic mothers induced retraction of fibrin clots formed by addition of thrombin to cell-free plasma. Fibrin clot retraction activity increased with time, reaching a maximum within 24 hours and was inhibited at 4 degrees C or in the presence of EDTA. This retraction had many characteristics in common with that induced by platelets. EC obtained from the umbilical veins of infants of poorly controlled insulin dependent diabetic mothers (IDDM) showed similar patterns of retraction. However, compared to normals, these cells induced greater retraction. Since the retraction of fibrin clots is thought to promote the exposure of sub-endothelial layers and since such an exposure plays a major role in thrombogenesis, we suggest that retraction of fibrin clot by EC should be taken into account in evaluating pre-thrombotic states. PMID- 3834951 TI - Ovarian progesterone synthesis and content and plasma progesterone levels in adult mice treated with diethylstilbestrol neonatally. AB - Ovaries from 8-week-old female NMRI mice, treated with 5 micrograms diethylstilbestrol (DES) daily for the first 5 days after birth were studied for progesterone synthesis in vitro, using 3H-pregnenolone as precursor, and assayed for progesterone content using radioimmunoassay (RIA) technique. The plasma levels of progesterone were measured with RIA. These results were compared with those from control ovaries from females in different phases of the estrous cycle. Values for radioactivity representing 3H-progesterone were significantly higher after 1-hour incubation of ovarian homogenate from DES treated females than in homogenates of ovaries from any phase of the normal estrous cycle. The ovarian content of progesterone was similar in DES exposed ovaries and ovaries from females in proestrous or estrous but lower in DES ovaries than in diestrous ovaries. The plasma levels of progesterone were in the same range in DES treated females and diestrous females but higher in DES females than in estrous or proestrous females. PMID- 3834952 TI - Lymphocyte reactivity to mitogens and tumor sex steroid receptors in breast cancer patients. AB - In 60 breast cancer patients in stages I and II the blastogenic transformation of peripheral blood lymphocytes after phytohaemagglutinin (PHA) pokeweed mitogen (PWM) and concanavalin A (Con A) stimulation were assayed and estrogen (ER) and progesterone (PgR) receptor concentrations in tumor cytosol were measured. A negative correlation between lymphocyte reactivity to the mitogens and tumor steroid receptors concentration was found. The lymphocyte response to the mitogens in the patients with ER-PgR-tumors (R-) was significantly higher than in those with tumors either ER+PgR-or ER-PgR+ (R+) or ER+PgR+ (R++). There was also a negative correlation between lymphocyte response to PHA and either ER or PgR concentrations in the tumors. These results suggest that the presence of steroid receptors in tumor cells may be associated with the depression of immunological reactivity in breast cancer patients. PMID- 3834953 TI - Tangent counting for objective assessment of erythrocyte shape changes. AB - The resting shape of the human erythrocyte is maintained mainly by the elastic properties of its membrane. There is evidence that negative spontaneous membrane curvature is the cause of the biconcave shape; also negative membrane curvature is thought to be enhanced under "stomatocytogenic" influences and reduced under "echinocytogenic" influences. Experimental tests of these hypotheses are difficult in the absence of objective methods to quantify cell shape and/or membrane curvature. A new method is introduced to estimate the changes in convex and concave curvatures of the cell outlines in larger populations of RBC. It is based on the so-called "tangent count" procedure, carried out on microphotographs of freely suspended, randomly oriented RBCs in isotonic solutions. The method was validated by subjective shape assessment according to BESSIS' classification. It proved to be most sensitive in the range of moderate shape changes (classified subjectively as echinocyte II and stomatocyte II). PMID- 3834954 TI - Blood viscosity--a comparative study on three rotational instruments. AB - Three rotational viscometers for blood viscometry were compared at moderate and high shear. At high shear, coefficients of variation were all around 1% increasing 5-fold (Wells-Brookfield) and 3-fold (Carri-Med) when shear was lowered. Using pathological samples the coefficients of variation for the Carri Med mashine was doubled. Only the Contraves LS-30 viscometer showed neither an increasing coefficient of variation with declining shear, nor problems when measuring blood with suspension instability. PMID- 3834955 TI - Effects of blood storage on rheology and damage in low-stress shear flow. AB - Data are presented on the rheological and hemolytic behavior of whole human blood as it ages while stored at 4 degrees C (as in blood banking practice) up to 26 days. The viscometric properties of steady shear viscosity eta and oscillatory (complex) viscosity eta * = eta' - i eta" reported over ranges of shear rate gamma and radian frequency omega of 33 less than gamma less than 4130 s-1 and 1.5 less than omega less than 48 s -1; data on autologous plasma are given for reference. The Cox-Merz relation, eta (gamma) = [eta *(omega)] omega = gamma, is found to be a good approximation, with eta greater than or equal to [eta *], over the range studied. Release of hemoglobin (Hgb) and lactate dehydrogenase (LDH) into the plasma during shearing is tracked as a function of time for 30 min, and its sensitivity to gamma magnitude is measured. Bloods from four different donors are studied, with primary attention given to one (SSR). For all bloods, the release of both Hgb and LDH increases with storage age, but differences in such aging characteristics between different bloods can be substantial (even when rheological properties are identical). A post-shear incubation at 4 degrees C for one day shows no enhancement of plasma Hgb and LDH levels beyond those expected from normal aging after the shearing experience, demonstrating the absence of significant delayed-action effects as a consequence of shearing trauma. PMID- 3834957 TI - Quantitative characterization of blood rheological behavior in transient flow with a model including a structure parameter. AB - Transient rheological behavior of blood which involves non newtonian viscosity, elasticity and thixotropy can be modelized with a Maxwell rheological state equation which depends on a structure parameter having dimension of a shear rate. Identification of the model parameters leads to use an exponential apparent shear rate step and to use recursive filters for taking into account the impulse response of the viscometer servo-control device. Typical results for a normal blood sample are given. PMID- 3834956 TI - Elastic constitutive laws for cow teat tissue undergoing finite deformations. AB - Five constitutive laws are investigated to model the effect of machine milking. A nonlinear least squares procedure is employed to estimate material constants from in vivo teat inflation data. An exponential form is found to be statistically adequate as a constitutive law, and is used to determine the mechanical stresses in teat tissue during finite deformations. PMID- 3834958 TI - A study of non-Newtonian aspects of blood flow through stenosed arteries and its applications in arterial diseases. AB - Blood flow through a stenosed artery has been investigated in this paper. Blood has been represented by a non-Newtonian fluid obeying Herschel-Bulkley equation. This model has been used to study the influence of the fluid behaviour index n, shear-dependent nonlinear viscosity K and the yield stress tau H in blood flow through stenosed arteries. The variation of the wall shear stress and the flow resistance with n, K and tau H has been shown graphically. It is observed that the wall shear stress and the flow resistance increase in Herschel-Bulkley fluid in comparison with corresponding Newtonian fluid. It is of interest to note that, in the present model, the thickness of the plug core varies with the axial distance z in the stenotic region. Finally, some biological implications of the present model for some arterial diseases have been briefly discussed. PMID- 3834959 TI - Rationale for the NCCLS standard H20-T for differential leukocyte counting. AB - The National Committee for Clinical Laboratory Standards (NCCLS) tentative standard for Leukocyte Differential Counting (H20-T) was developed in the United States as a reference method for differential leukocyte counting as well as a method for the evaluation of the performance of differential leukocyte counters. The key features of this document are outlined and the reasons for their inclusion in the standard are given. PMID- 3834960 TI - A critical evaluation of the manual/visual differential leukocyte counting method. AB - The performance of differential leukocyte counting by 73 technologists and technicians working in 5 different laboratories in a large medical center was evaluated. Good correlation with the reference method was found for neutrophils, normal lymphocytes, and eosinophils. More variability was noted in the estimation of stab neutrophils and variant (atypical) lymphocytes and monocytes. The sensitivity of this method for clinically important conditions ranged from 100% to 34%, depending upon the abnormality. PMID- 3834961 TI - Use of pattern recognition technology for determination of the human differential leukocyte count. AB - The imprecision, inaccuracy, and clinical sensitivity of an automated differential counter based on pattern recognition technology (HEMATRAK model 590) were evaluated using the NCCLS standard H20-T. The data show that the instrument is capable of performing assays in a manner comparable with the reference method proposed by NCCLS. In addition, data are presented from a multicenter study involving 174 HEMATRAK instruments which showed that the automated systems produce results equivalent to manual procedures (based on approximately 350 individual assays). PMID- 3834962 TI - The Coulter Counter leukocyte differential. AB - The leukocyte differential counting capability of the Coulter Counter model S PLUS IV was evaluated for precision, accuracy, and clinical sensitivity. The evaluation used procedures described in the NCCLS tentative standard (H20-T) when these were appropriate for this technology. Within its inherent constraints, the system was found to be more reproducible than the stained-film reference method and at least as accurate. Clinical sensitivity was equivalent to that of a four slide, microscope differential count. Reference ranges for the cell classes identified by the instrument were similar to those given by the stained-film method. PMID- 3834963 TI - Leukocyte screening using the ELT-800/WS. AB - In order to provide performance standards for instruments utilizing automated cell differentiation, a study was undertaken using the NCCLS Standard H20-T. The ELT-800/WS using light scattering technology was compared with a manual reference method. These were compared using normal values developed in the study for determination of sensitivity of the method, utilizing arbitration where necessary. Statistical analyses were performed including ANOVA, imprecision, sample size efficiency, and clinical sensitivity. Whereas the two methods (manual and automated) are quite different technologically, the mean differences are not significantly different for clinical purposes. The automated method is very precise. The normal values developed for the ELT 800/WS are comparable not only to the manual values developed by NCCLS but also to earlier values used for reference in the laboratory. In studies to identify or to classify samples as either normal or distributionally or morphologically abnormal, a false abnormal rate of 6.3% and a morphologically false abnormal rate of 8.7% were found. When the specific types are considered, in only two instances (3.2%) did the test method fail to show an operator alert with an abnormal specimen. The performance of the ELT-800/WS seems to be as accurate and as sensitive as the reference manual method and is satisfactory for clinical decision-making. PMID- 3834964 TI - Comparison of performance for leukocyte differential counting of the Technicon H6000 system with a manual reference method using the NCCLS standard. AB - The National Committee for Clinical Laboratory Standards (NCCLS) has published a tentative standard for leukocyte differential counting, by means of which a manual or automated method for leukocyte differential counting can be compared with a manual reference method. The performance of the Technicon H6000 system was evaluated using the standard at Stamford and Overlook Hospitals. A total of 502 patient samples were analyzed: 315 from Overlook and 187 from Stamford. The H6000 system was found to be approximately four times more precise than the 200-cell manual reference method for each cell type. Correlation of the H6000 system with the manual method was good, with correlation coefficients of 0.98 for neutrophils and lymphocytes, 0.96 for eosinophils, 0.72 for monocytes, and 0.5 for basophils. The clinical sensitivity of the H6000 system, measured in terms of false normals and false abnormals, was similar to that of the manual reference method when measured against itself. There were no clinically significant discrepancies in results from the H6000 system, except for possibly one case where a patient was already on antibiotic therapy. The NCCLS standard was found to be a useful but rather complex and involved method for evaluating the performance of the H6000 system, the major problem being the amount of work needed to count manually the number of cells required for the manual reference method. PMID- 3834965 TI - Evaluation of leukocyte differential counts on the QBC centrifugal hematology analyzer according to NCCLS standard H20-T. AB - A performance study of the QBC centrifugal hematology system was conducted according to reference and analytical procedures defined in NCCLS Tentative Standard for Leukocyte Differential Counting, H20-T. A complex mathematical transformation and analysis of variance (ANOVA) were applied to the test data. This statistical technique is intended to segregate and emphasize differences in samples and methods. The comparative study of leukocyte differential counts show that QBC is equivalent in performance to the NCCLS reference method when the latter counts are grouped according to the WBC subpopulations reported by QBC. Within these grouped subpopulations, QBC counts were more precise than manual reference counts and otherwise comparable in terms of results. Similarly, QBC compared favorably with the reference method in its clinical sensitivity to abnormals, based on between-method versus within-method studies of hospital specimens. PMID- 3834966 TI - The clinical value of qualitative peripheral blood leukocyte changes. AB - The assessment of qualitative leukocyte changes is rarely useful to the clinician in making a precise diagnosis of illness unless a quantitative leukocyte abnormality also exists. This may, however, soon change. Current technology, albeit in the setting of malignancy, permits lymphoid subset identification, which has proved to be of immense clinical importance. One may expect that new reagents detecting other leukocyte subsets will yield equally exciting information about nonmalignant diseases. If this technology is to be of widespread clinical value, then standardization of reagents, equipment and technologist performance must parallel progress in antigen detection and disease definition. A model for the setting of such standard can be found in the systematic approach used by the NCCLS for the evaluation of leukocyte counting devices. PMID- 3834967 TI - Quality control of automated cellular analyses -- the fallibility of embalmed blood. AB - The use of preserved blood for quality control is well established. The treatment of such materials to extend their life can impart a property to those materials such that external contaminants to diluents used for subsequent analysis may not be detected by these materials and give a false sense of security in a quality control program. The effect of the contaminant on fresh cells is more of a problem. Most contaminants affect cell volume, particularly the red cells which have been studied in-depth. White cell differential screening by size analysis is similarly affected. The recognition of the different properties of fresh and preserved blood helps explain results. PMID- 3834968 TI - Imprecision of ratio-derived differential leukocyte counts. AB - Differential leukocyte counts are very imprecise if determined as the product of a total WBC and a percentage obtained by differentiation of a relatively small number of cells. The imprecision can be decreased by increasing simultaneously the numbers of both the counted and the differentiated cells. An increase of only one (such as by automated counting of the WBC) without a simultaneous increase of the other one does not lead to an appreciable reduction of the imprecision. PMID- 3834969 TI - pH effects on red cell deformability. AB - The effect of pH on erythrocyte deformability was determined in the ektacytometer. In isotonic solutions, cell deformability was essentially unaltered at pH values from 6.44 to 7.7, despite the known cell volume changes that occur over this pH range. Analysis by osmotic scan ektacytometry showed that erythrocyte deformability is homeostatically maintained constant during acidosis and alkalosis because of a balance between the countervailing effects of changes in intracellular viscosity and in the surface to volume ratio. This balance is perturbed in the sickle erythrocyte, so that acidosis improves deformability. PMID- 3834970 TI - Morphologic alterations of blood cells in the impedance aggregometer. AB - The scanning (SEM) and transmission (TEM) electron microscopic appearance of blood cells was studied in correlation with the aggregometer tracing recorded after activation of whole blood samples by collagen or ADP. Early morphologic alterations of platelets characterized by the formation of marginal pseudopods and bulbous protrusions were not indicated by the aggregometer. The initial increase in impedance was caused by the attachment of platelets displaying typical shape change morphology at the surface of the electrode wires joint with collagenous fibrils in collagen activated specimens. During further increase in impedance, aggregates were detectable in the blood suspension and at the electrode, the number and size of which increased up to the maximal extension of the aggregometer tracing. Using low doses of ADP (2-3 microM), dissociation of aggregates in the blood suspension was detectable by SEM, which was not recorded by the aggregometer tracing indicating further limitation of the impedance aggregometer. In collagen activated samples, platelet aggregates were covered by PMN and monocytes that in TEM displayed distinct phagocytosis of platelet fragments and fibrin masses. In ADP specimens, activation of leukocytes was only rarely detectable. The detection of mixed aggregates may be important for further employment of the impedance aggregometer in the diagnosis of hematologic diseases. PMID- 3834971 TI - Alteration of glucose metabolism in liver by acute administration of cannabis. AB - In previous research on the effects of cannabis on cellular functions the authors observed an increase in glucose metabolism in the postmitochondrial fraction of the liver of rats submitted to chronic administration of cannabis extracts. Continuing this research on rats submitted to acute cannabis intoxication a single dose of cannabis extract (600 mg/kg) in olive oil is administered to male adult rats and the animals are killed within a 36-hour period. The analyses show that energetic and detoxifying metabolism of glucose is increased, as indicated by the increase of F-1, 6-di P-aldolase and uridin-diphosphoglucose-dehydrogenase activities, which parallels the observed decrease of glycogen levels. Maximum effect appears between 8 and 16 hours after administration. PMID- 3834972 TI - [Future of health services research in the European Community]. PMID- 3834973 TI - [Future of health and health services]. PMID- 3834974 TI - [Specialization in medicine from the standpoint of health needs]. PMID- 3834975 TI - [Revascularization of excluded kidneys]. PMID- 3834976 TI - [Surgical treatment of renovascular hypertension]. PMID- 3834977 TI - [Current indications for revascularization surgery]. PMID- 3834978 TI - [Prevention and medical treatment of polyregional vascular lesions]. PMID- 3834979 TI - [Aneurysms of the abdominal aorta: indications for surgery and treatment of associated vascular lesions]. PMID- 3834980 TI - [Obstructive arteriopathy of lower limbs]. PMID- 3834981 TI - [The impact of coronary disease in patients with obstructive lesions of the carotid arteries]. PMID- 3834982 TI - [Surgical treatment of critical congenital cardiopathies]. PMID- 3834983 TI - [The patient who had undergone surgery for congenital cardiopathy: general problems]. PMID- 3834984 TI - [Obstacles to the outflow of the left ventricle]. PMID- 3834985 TI - [Tetralogy of Fallot: postoperative evaluation]. PMID- 3834986 TI - [Transposition of great vessels]. PMID- 3834987 TI - [Communication problems in physician-patient relations]. PMID- 3834988 TI - [Mitral valve prolapse and sports: introduction]. PMID- 3834989 TI - [Diagnosis and evaluation of anatomical severity and hemodynamics in mitral valve prolapse]. PMID- 3834990 TI - [Clinical and functional evaluation of athletes with mitral valve prolapse]. PMID- 3834991 TI - [Clinical significance of electrocardiographic anomalies in athletes with mitral valve prolapse]. PMID- 3834992 TI - [Echocardiographic evaluation of left ventricular function in young subjects with mitral valve prolapse]. PMID- 3834993 TI - [Risk of arrhythmia in athletes with mitral valve prolapse]. PMID- 3834994 TI - [Mitral valve prolapse syndrome and sports. Conclusive considerations: current prognostic criteria and research prospects]. PMID- 3834995 TI - [Value and limitations of electropharmacological tests in the selection of anti arrhythmic therapy in malignant ventricular tachyarrhythmia]. PMID- 3834996 TI - [Professionalism and being professional. How does the concept of profession evolve]. PMID- 3834997 TI - [Doppler echocardiography (real-time two-dimensional color-flow echocardiography) in the diagnosis of congenital heart defects and heart valve diseases]. PMID- 3834998 TI - [Usefulness of the end-systolic stress-fractional shortening relations in the evaluation of left ventricular function]. PMID- 3834999 TI - [Dipyridamole-induced reduction of regional myocardial perfusion: fact or fiction?]. PMID- 3835000 TI - [Coenzyme Q10 in dilated cardiomyopathy: a biochemical approach to the treatment. Preliminary data]. PMID- 3835001 TI - [Echocardiographic and angiographic aspects of chronic rupture of an aneurysm of the sinus of Valsalva into the right ventricle]. PMID- 3835002 TI - Reference values for urea, creatinine and electrolytes in Zimbabwean males. PMID- 3835003 TI - Phytochemical screening of some Zimbabwean medicinal plants. PMID- 3835004 TI - Acute non-specific epididymitis in early infancy: case report and review of the literature. PMID- 3835005 TI - Treating mild to moderate hypertension. PMID- 3835006 TI - Antibiotic prescribing in Zimbabwe. PMID- 3835007 TI - Cardiovascular instability following acute cervical spinal cord trauma. AB - Irregularities in vital sign (pulse, blood pressure, cardiac rhythm) recordings are commonly observed following acute spinal cord injury. These abnormalities have been generally attributed to autonomic instability. However, there have been no clinical reports that evaluate these problems in a large group of acutely injured patients. Therefore, this study was performed on 45 patients with acute cervical spinal cord injuries to evaluate the incidence, severity, and risk factors for cardiovascular instability. This investigation revealed that there is a direct correlation between the severity of the cord injury and the incidence and severity of cardiovascular problems. Endotracheal suctioning with or without documented hypoxia are major causes of severe bradycardia and cardiac arrest within the first 2 weeks after trauma. Careful monitoring of severely injured patients and attention to the warning signs of cardiovascular instability can reduce the risk of life-threatening emergencies. PMID- 3835008 TI - Critical neuromonitoring at spinal and brainstem levels by somatosensory evoked potentials. AB - Electronic averaging makes it possible to analyze somatosensory evoked potentials (SEP) recorded noninvasively from the body surface in man. With noncephalic reference recording, the SEP discloses a series of components that are volume conducted from distinct open-field generators with a geometry adequate to produce external potential gradients over the head. Farfields are brief positive dips with widespread distribution that present stationary onset and peak latencies all over. They reflect the propagated afferent volley in axons bundles, thus in brachial plexus (P9), dorsal column (P11), and medial lemniscus (P14). Somehow unexpectedly, SEP traces also disclose a widespread prolonged farfield N18 of negative polarity that reflects neural generators in the brainstem below thalamus. Nearfields can be positive or negative, and they reflect neural generators located less than about 50 mm from the electrode. They are influenced to a greater extent by the position of the recording electrodes. For example, neck electrodes can follow the upward propagation of the dorsal column volley (N11), whereas scalp electrodes can map out the distinct contralateral parietal (N20, P27) or frontal (P22, N30) cortical generators. Electrodes around the neck also disclose the posterior N13 and anterior P13 responses that reflect the two sides of the same dorsal horn generator with a horizontal axis. Bit-mapped topographic color imaging of potential fields provides detailed data on time and spatial features of the different SEP neural generators. SEP neuromonitoring can use these results to titrate input to spinal cord (nerve potentials or P9 farfield), spinal generators (N11 nearfield or N13-P13 nearfield in posterior-to anterior neck montages), brainstem generators (P14 farfield and N18 response), or cortical generators (parietal N20-P27 or frontal P22-N30). The central somatosensory conduction time can be titrated from the spinal entry and cortical arrival times measured in neck and scalp recordings. PMID- 3835010 TI - Alcohol dependence syndrome in north western Sri Lanka. PMID- 3835009 TI - Sensory evoked responses in head injury. AB - Head trauma is a significant source of morbidity in the United States each year. Approximately 700 patients were admitted to our surgical intensive care unit with some degree of head trauma in a 24-month period. Glasgow Coma Score (GCS) was 8 or less in 90% of this group, and 3 or 4 in 43%. Sensory evoked responses were recorded in over 500 patients. This study is reported to demonstrate that optimum care of the injured brain depends on titration of care aimed at maintaining normal neuronal function. In our series, 25% of the patients with GCS of 3 or 4 returned home or to a rehabilitation unit, a significant decrease in morbidity over other reported series. Chemical paralysis and barbiturate coma were a factor in the decision to monitor in 50-60% of the series. In these patients, the auditory brainstem evoked response (ABR), a monitor of brainstem neuroelectrical function, and the somatosensory evoked response, a monitor of brainstem and cortical function, were used to follow the effectiveness of medical and surgical management in these patients, since neurologic examination was of limited value. Case reports are presented to demonstrate that even at high barbiturate levels, access to the integrity of the central nervous system is still possible. Relations among GCS, computerized tomography (CT), intracranial pressure (ICP), ABR, pupillary response, and outcome were studied for a subgroup of 114 patients. All of these clinical parameters, except CT findings, were significantly correlated with outcome using Chi-square analysis. When the data were further analyzed with linear regression analysis, however, the only parameters that significantly correlated with outcome were pupil reactivity and ABR. The principal conclusion of this report is that the main application of serial monitoring of the sensory central pathway in the head-injured patient is not in the prediction of outcome but in the titration of care of the patient for the preservation of neuronal function. PMID- 3835011 TI - Jaccoud's arthritis. PMID- 3835012 TI - [Inflammatory pseudotumors of the orbit (apropos of a case)]. PMID- 3835013 TI - [Scanning electron microscopy of the cryopreserved corneal endothelium: a critical study in man and animals]. PMID- 3835015 TI - [Present status of instrumentation in vitreous surgery]. PMID- 3835014 TI - [Principal complications of lens implantation. Apropos of 60 cases]. PMID- 3835016 TI - [Papillary drusen complicated by optic atrophy]. PMID- 3835017 TI - [Surgical treatment of pediatric esotropia]. PMID- 3835018 TI - [Surgical treatment of A and V syndromes. Apropos of 300 cases]. PMID- 3835019 TI - [Uveal microanatomy using resin injection]. PMID- 3835020 TI - [A very misleading palpebral wound. Value of the examination of the trigeminal nerve]. PMID- 3835021 TI - [Atypical ophthalmologic manifestations of Horton's disease: anterior segmentitis and bulbar pseudoconjunctivitis]. PMID- 3835022 TI - [A case of Horton's disease with atypical ocular manifestation]. PMID- 3835023 TI - [Importance of the retractor muscles in palpebral surgery]. PMID- 3835024 TI - [Cranial fibrous dysplasia. Apropos of a case]. PMID- 3835025 TI - [Hydatid cyst of the orbit. Apropos of a case]. PMID- 3835026 TI - [Cavernous hemangioma of the retina. Apropos of a case]. PMID- 3835027 TI - [Course of diabetic retinopathy under the insulin pump]. PMID- 3835028 TI - [Morphologic study of the vessels of the pars plana]. PMID- 3835029 TI - [Intra-chamber adrenaline infusion in the extracapsular surgery of the lens. Value and limitations of the method]. PMID- 3835030 TI - [Method of progressive surgery of the anterior segment. The preventive treatment of astigmatism]. PMID- 3835031 TI - [Protected sclerocleisis in glaucoma. A Vietnamese technic]. PMID- 3835032 TI - [2 cases of acquired Brown's syndrome]. PMID- 3835033 TI - [Sector designs in 1983]. PMID- 3835035 TI - Is red cell sodium transport a function of pressure? AB - Sodium efflux from normal red cells was measured as a function of pressure to test whether abnormal sodium transport in hypertension is a direct consequence of the increased arterial pressure. Red cells were loaded with 22Na and sodium efflux was measured at 37 degrees C while the samples were in a bomb at constant pressures of 200 mmHg or 517 mmHg. Control samples were incubated concurrently at atmospheric pressure and the same temperature. The effect of preincubation of blood at 200 mmHg for 3.5 h on sodium efflux was also measured. 22Na efflux and first order efflux rate constants were similar in high and normal pressure samples in each case. These findings suggest that acute changes in pressure have no effect on erythrocyte sodium efflux, which in turn implies that abnormal membrane transport in hypertension is not a consequence of the raised arterial pressure. PMID- 3835034 TI - Sodium chloride preference and recognition threshold in normotensive subjects on high and low salt diet. AB - Young adult volunteers were placed on two week periods of high and low-salt diets following dietetic counselling and using normally available foodstuffs. Changes in sodium recognition threshold, salivary and urinary electrolytes and preference for NaCl, NaCl/KCl (1:1) mix and monosodium glutamate were measured during the high- and low-salt diet periods and during two-week control periods with subjects on their usual diet. Sodium preference was defined as the sodium concentration of unsalted tomato juice following ad libitum addition of a sodium salt till the most preferred taste was achieved. Subjects served as their own controls across the dietary periods in a cross-over design. While sodium excretion on the low salt diet was significantly less than at on the high-salt diet, there were no significant changes in blood pressure, sodium recognition threshold, body weight or salivary electrolytes between these dietary periods. There was a significant increase in preference for NaCl, NaCl/KCl mix and monosodium glutamate on the high-salt diet when compared to the low-salt diet period. In all dietary periods less sodium was added to the unsalted tomato juice with monosodium glutamate than with NaCl/KCl and less sodium was added with the NaCl/KCl mix than with the NaCl. This study demonstrates that relatively short periods of increased sodium intake result in an increase in sodium preference in the absence of changes in salivary electrolytes or recognition threshold. PMID- 3835037 TI - Eighth annual meeting of the Japanese Society of Hypertension. Osaka, Japan, October 18-19, 1985. Abstracts. PMID- 3835036 TI - Influence of renal capsule on kidney function in hypertension. AB - Proximal tubular hydrostatic pressure (PT) and subcapsular pressure i.e. renal interstitial pressure (PS) were measured in isolated perfused kidneys of normotensive Wistar Kyoto rats (WKY) and of spontaneously hypertensive rats (SHR). At a renal perfusion pressure of 90 mmHg PT and PS were significantly lower in kidneys of SHR rats, while the fractional potassium and magnesium excretion rates were elevated. Superimposed venous occlusion of 15 mmHg increased PT as well as PS in both strains of rats but to the same level, while the increase in fractional electrolyte excretion (sodium, potassium, chloride, calcium and magnesium) was again much more pronounced in kidneys of the SHR rats. Decapsulation of the kidneys of the WKY strain lowered the PT values to that observed in SHR rats. Venous pressure elevation under these conditions yielded the same electrolyte excretion pattern in both types of kidneys. At comparable elevated PT and PS values in kidneys of the SHR rats the electrolyte excretion rats were much higher during venous occlusion than at increased perfusion pressure. The same experimental conditions in kidneys of WKY rats resulted in different values of PT and PS, whereas the electrolyte excretion rates were the same. The results strongly suggest that: 1) the absolute values of the intrarenal pressures are not correlated with electrolyte excretion pattern; 2) venous pressure elevation has a profound effect on electrolyte excretion rate only in SHR kidneys and in the decapsulated kidney of the WKY rat; 3) the capsular compliance in kidneys of SHR rats is higher. PMID- 3835038 TI - Effects of D-penicillamine on collagen biosynthesis by fibroblast cell cultures. AB - The effects of D-penicillamine on collagen and total protein synthesis by fibroblast cell cultures were studied. High concentration of D-penicillamine (10 mmol/l) produced a toxic effect consisting of inhibition of growth and a non specific increase in protein synthesis. A low concentration of D-penicillamine (100 mumol/l) decreased the biosynthesis of both type I and type III collagens. PMID- 3835039 TI - Effects of histamine receptor antagonism on adrenaline-induced changes in blood pressure in intact dogs. AB - This study was designed to test the hypothesis that histamine may contribute to the vasodepressor response which occurs in response to physiologic increments in adrenaline concentration in intact animals. Accordingly, following a control period of 30 min, adrenaline was infused intravenously for 45 min at a rate of 250 ng/kg per min in 14 anaesthetized dogs (Group I). A second group of eight dogs received an identical adrenaline infusion following complete H1- and H2 histamine receptor antagonism with tripelennamine plus cimetidine (Group II). A time control group of experiments, in which no drugs were infused, as well as groups receiving adrenaline plus either tripelennamine or cimetidine, were also performed. In Group I, adrenaline infusion increased heart rate and reduced mean arterial blood pressure by 10 mmHg (P less than 0.01). Following combined H1- and H2-histamine receptor antagonism (Group II), adrenaline infusion failed to reduce mean arterial blood pressure. However, mean arterial blood pressure was reduced significantly in the groups receiving adrenaline plus only one of the histamine receptor blocking agents. Since only the combined histamine receptor blockade completely eliminated the vasodepressor response to adrenaline, the data suggest that histamine may play a physiological role in the vasodepressor response to circulating adrenaline in the intact animal, and that both H1- and H2-histamine receptors may be involved. PMID- 3835040 TI - Effect of pregnancy in the rabbit on the pressor response to angiotensin and noradrenaline. AB - The pressor responses to angiotensin II injections of 29, 117 and 468 pmol/kg and infusion at 54 pmol/kg per min were compared in near-term pregnant and matched non-pregnant rabbits. The responses to noradrenaline injections of 652, 2608 and 10 432 pmol/kg and infusion at 1185 pmol/kg per min were similarly compared. At all doses of angiotensin and noradrenaline, whether by injection or infusion, the response of the pregnant animals was significantly greater. However the control arterial pressures of the pregnant rabbits were lower and fell in a range where the baroreceptor reflex might be less effective. Thus less efficient buffering could contribute to the greater response to the vasoconstrictor agents. To test the effect of pregnancy on the vascular response to angiotensin and noradrenaline when reflex and central effects were excluded, hexamethonium was used to produce autonomic ganglion blockade. The response to both vasoconstrictors was now less in the pregnant rabbits than in the non-pregnant. Thus in assessing the effects of pregnancy on the responses of the rabbit to angiotensin and noradrenaline the effect of pregnancy on mean blood pressure must be taken into account, since this can influence the extent to which the arterial baroreceptors may modulate the response. PMID- 3835041 TI - Effects of the intraperitoneal administration of diazepam on rat serum lipoproteins separated by polyacrylamide gel electrophoresis. AB - In normolipidaemic young rats the intraperitoneal administration of diazepam (10 mg/kg) induced a marked fall of the total serum lipids and total cholesterol. A dose of 5 mg/kg brought about an increase of HDL2 lipoprotein fraction and an elevation of the HDL2/HDL2.HDL3 ratio. Margarine administration elicited a significant augmentation of the total serum lipids and a reduction of the HDL2/HDL2.HDL3 ratio. The intraperitoneal injection of diazepam in margarine treated rats brought about a decrease of total serum lipids and total cholesterol, (when compared to the margarine values), an obvious elevation of the HDL2 fraction and of HDL2/HDL2.HDL3 ratio. The LDL1 (beta) fraction was decreased. These data confirm our earlier findings which show that diazepam improves the HDL cholesterol/total cholesterol ratio. PMID- 3835042 TI - Inhibition of acetylcholinesterase by histamine agonists and antagonists. AB - The histamine H1 and/or H2-receptor agonists showed weak acetylcholinesterase inhibitory activity. Their dissociation constants (Kis and/or Kii) were 2-methyl histamine (Kis = 1751 mumol/l, s.e. = 163) less than 4-methyl histamine (Kis = 3551 mumol/l, s.e. = 414) less than dimaprit (Kis = 2931 mumol/l, s.e. = 605; Kii = 3668 mumol/l, s.e. = 901) less than histamine (Kis = 6480 mumol/l, s.e. = 1360). Both histamine H1 and H2-receptor antagonists showed stronger acetylcholinesterase inhibitory activity. Their dissociation constants were ranitidine (Kii = 1.56 mumol/l, s.e. = 0.14) less than oxmetidine (Kis = 14.7 mumol/l, s.e. = 1) less than mepyramine (Kis = 178 mumol/l, s.e. = 23; Kii = 440 mumol/l, s.e. = 98) less than cimetidine (Kis = 199 mumol/l, s.e. = 12; Kii = 827 mumol/l, s.e. = 126). Using the ROSFIT programs for fitting data to common enzyme kinetic models, the inhibition caused by histamine, 4-methyl histamine, 2-methyl histamine, oxmetidine and neostigmine was of the competitive type. Mepyramine, cimetidine and dimaprit appeared to exhibit the modern non-competitive type of inhibition with their primary action on the enzyme rather than on the enzyme substrate complex. Ranitidine seemed to act on the enzyme-substrate complex rather than the enzyme, conforming to the uncompetitive inhibition model. The clinical implications of acetylcholinesterase inhibition by cimetidine and ranitidine are discussed. PMID- 3835043 TI - [A case of "bilateral" superior cerebellar artery syndrome associated with bilocular basilar-top aneurysm]. PMID- 3835044 TI - [Hypothyroid myopathy, report of a case developing after commencement of substitution therapy]. PMID- 3835045 TI - [Long-term follow-up study of seventeen cases with Wilson's disease]. PMID- 3835046 TI - [Autosomal dominant osteosclerosis associated with familial spinal canal stenosis]. PMID- 3835047 TI - [Quantitative analysis of muscular wasting of the lower limbs in Duchenne muscular dystrophy by computed tomography]. PMID- 3835048 TI - [Myoclonus in Alzheimer disease]. PMID- 3835050 TI - [Validity of an antibody-captured-ELISA (IgM-C-ELISA, IgG-C-ELISA) method for the early diagnosis of herpes simplex virus encephalitis]. PMID- 3835049 TI - [Evoked potentials in neuro-Behcet's syndrome]. PMID- 3835051 TI - [Non-paralytic pontine exotropia]. PMID- 3835052 TI - [Coexistent fibromuscular dysplasia of the internal carotid arteries and an intracavernous carotid aneurysm--case report]. PMID- 3835053 TI - [Anterior spinal artery syndrome--as a result of dissecans of the aorta]. PMID- 3835054 TI - [The diffusing capacity and measurement of PaO2 before and after exercise in patients with cardiac or pulmonary diseases]. PMID- 3835055 TI - [Preliminary evaluation of the clinical application of multibreath nitrogen washout]. PMID- 3835056 TI - [Regression equations for estimating the predicted value of lung function tests for physical labor of moderate strength]. PMID- 3835057 TI - [Fiberoptic bronchoscopy in broncholithiasis]. PMID- 3835058 TI - [Bronchofiberoscopy in 73 patients with diffuse pulmonary disease]. PMID- 3835059 TI - [Microlithiasis (report of 2 cases and review of the literature)]. PMID- 3835060 TI - [Report of 18 cases of cough syncope]. PMID- 3835061 TI - [Clinical study of lung cancer detected by mass X-ray survey]. PMID- 3835062 TI - Acquired immunodeficiency syndrome (AIDS). PMID- 3835063 TI - Aetiology of diarrhoea in malnourished children at Kenyatta National Hospital. PMID- 3835065 TI - Mental health problems of refugees in East Africa. PMID- 3835064 TI - A national BCG scar survey in the estimation of BCG vaccination coverage in Kenya. PMID- 3835066 TI - Age estimation in clinical and public health research. PMID- 3835067 TI - Head injury in children: a study of 120 cases. PMID- 3835068 TI - HBs antigen and blood donors in Benin City, Nigeria. PMID- 3835069 TI - Some aspects of cervical cancer in young African women in Kenya. PMID- 3835070 TI - Acrodermatitis enteropathica: case report and review of the literature. PMID- 3835071 TI - Chromosome aberrations and sister chromatid exchanges in workers of a metallurgical plant. PMID- 3835072 TI - Exposure of AET, MEA or 5HT pre-treated pregnant mice to X-irradiation. I. DNA content of foetal kidneys and heart. PMID- 3835073 TI - Exposure of AET, MEA or 5HT pre-treated pregnant mice to X-irradiation. II. Body weight of pregnant females, number and weight of live foetuses, and placental weight. PMID- 3835075 TI - Role of the spleen in cell-mediated immunity. III. Effect of syngeneic spleen implantations on transplantation reactivity to the H-Y antigen in splenectomized female mice. PMID- 3835074 TI - The rhythm of acid phosphatase activity in adult and old rat livers. PMID- 3835076 TI - Reaction of the cerebral hemisphere tissue of rats to neonatal injury. A quantitative autoradiographic study. PMID- 3835077 TI - Neutral sugar composition of the glycopeptide fraction isolated from rat liver preparations enriched with smooth endoplasmic membranes. PMID- 3835078 TI - Depression of delayed hypersensitivity responses in patients with pertussis. AB - Components of Bordetella pertussis cause impairment of cell-mediated immunity in experimental animals and children with acute pertussis have been shown to have a reduced prevalence of positive tuberculin skin tests (13). Furthermore, secondary infection is one of the major causes of morbidity and mortality in this disease. On the basis of these observations, we have studied delayed hypersensitivity responses in children with B. pertussis infection and compared the results with responses elicited in the same patients one to three months later, as well as with responses in control children. During acute illness, each patient was tested for 48 hour delayed hypersensitivity response to seven antigens (tetanus and diphtheria toxoids and tuberculin, candida, streptococcus, trichophyton and proteus antigens) and glycerol control. Responses were quantitated by total number of antigens positive (greater than or equal to 2 mm) and total millimeters of response. The control group (N = 11) had 4.2 +/- 1.0 positive antigens and 13.3 +/- 2.7 total mm of response. In contrast, the patients with acute pertussis, (N = 6) had significantly reduced responses, with only 1.5 +/- 1.0 positive antigens and 5.4 +/- 3.2 total mm of response (each different from control, p less than 0.001). That this difference was due to the acute infection with B. pertussis is supported by the responses demonstrated on retest 1-3 months later. At that time, the convalescent patients had 3.3 +/- 1.0 antigens positive and 11.0 +/- 1.7 mm of induration, not significantly different from the control group. Four of the six pertussis patients were outpatients throughout their course and all recovered uneventfully.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835079 TI - Anti-pertussis toxin IgG and anti-filamentous hemagglutinin IgG production in children immunized with pertussis acellular vaccine and comparison of these titers with the sera of pertussis convalescent children. AB - Serum was taken from 195 infant pertussis patients several times at appropriate intervals, and antibodies to pertussis toxin and filamentous hemagglutinin were evaluated by the ELISA. The geometric mean titers were low for both IgG antibodies at the onset of the disease, and rose to about 30 U/ml for both antibodies in the convalescent sera. All convalescent sera showed high titers of anti-PT IgG antibody. Paired serum samples were collected from 685 children before and four weeks after the second primary dose of immunization with the component vaccine. The titers were less than 1.0 and 1.8 U/ml for anti-PT and anti-FHA IgG, respectively for pre-immunization, and 22 and 66 U/ml for anti-PT and anti-FHA IgG, respectively for after immunization. When children six months of age were immunized with the component vaccine, good antibody responses were seen and no significant differences of antibody response by age were observed. There were 71 children who were immunized twice with the component vaccine and were considered to be exposed to infection by household members. Nine children out of 71 had weak or typical attacks of pertussis, and the attack rate was about 13% (9/71). It was concluded that the newly developed vaccine is suitable for children with respect to immunogenicity, and it was assumed that 20 to 30 ELISA U/ml of anti-PT and anti-FHA IgG is sufficient for protection from pertussis. PMID- 3835080 TI - Whooping cough and pertussis vaccine: a comparison of risks and benefits in Britain during the period 1968-83. AB - Since 1975, acceptance of pertussis vaccine has fallen from over 70% to 50% or less in most parts of Britain. This permits evaluation of a continuing natural experiment in which the frequency and severity of whooping cough can be compared those of adverse events following injections of pertussis vaccine. National data show an increase in notifications of whooping cough in most parts of Britain since 1975. Hospital admissions show considerable variation between areas with relatively high rates in some areas of deprivation but very low rates in more affluent areas even where vaccine-acceptance is around 50%. Deaths of infants with whooping cough have decreased steadily since 1900, the rate since 1975 being the lowest ever. Active epidemiological surveillance in Glasgow, with a population of 216,000 children and 13,000 births annually, shows that outbreaks and severe cases requiring admission to hospital were concentrated consistently in a few areas of deprivation. There is a significant correlation between vaccine acceptance and hospital admission by district of residence but analysis of variance shows this effect to be less than that of overcrowding in households and other deprivation variables. In each of three outbreaks studied prospectively (1974-5, 78-78 and 82) about 30% of cases occurred in children who had received three doses of pertussis vaccine. Such vaccination had a significant protective effect in children aged 1-4 years but not in older children. There was no evidence of a herd immunity sufficient to protect infants below age for vaccination. Admissions to hospital decreased during the period 1970-83. There were no deaths attributable to proven or suspected infections with Bordetella pertussis during the period 1972-1983. No cases of encephalopathy, permanent brain damage or lung damage were detected in a follow up of all cases notified, surveyed or admitted to hospital between 1975 and 1982. Collectively, these national and local data provided estimates of the frequency of infection, complications of infection, admission to hospital and death in children with whooping cough for comparison with local, national and published estimates of the frequency and severity of adverse reactions, encephalopathy, permanent brain damage and death after injections of pertussis vaccine. It is concluded that, in children living in non-deprived circumstances in Britain, the risk of pertussis vaccine during the period 1970-83 exceeded those of whooping cough. In some deprived sectors, the risks from whooping cough might have been marginally higher but there was no evidence that this was associated with any increase in deaths or permanent disabilities. PMID- 3835081 TI - Is the acute encephalopathy test in mice suited for control of pertussis vaccines? AB - Animal models to control the serious neurological complications after vaccination against whooping cough are not available. In a recent paper pertussis vaccine induced acute encephalopathy in certain mouse strains (1). Healthy BALB/c mice died with shock-like symptoms after immunization with bovine serum albumin (BSA) and heat-killed pertussis. Mice not sensitized with BSA survived, and mice of strains with another H-2 type than H-2d were not susceptible. The authors concluded that the susceptibility to side effects to pertussis vaccine in mice and possibly in human is linked to the MHC. We tried to repeat the experiments reported by Steinman et al. in the hope that the murine encephalopathy model would be useful to evaluate possible neurological complications. In spite of having the same H-2d genotype, the BALB/c mice of two breeding stocks did not develop shock-like symptoms with fatal consequences after the last injection with BSA. This fact corresponds possibly with the author's observation that the pertussis vaccine encephalopathy is not under the control of H-2 genes alone. As shown in our tests the sudden deaths and encephalopathy in mice are not linked to BSA-sensitization because mice who received pertussis vaccine only showed the same symptoms as mice injected with BSA and vaccine. Histology did not indicate brain damage. It seems obvious that the deaths in our experiments were caused by the pertussis toxins present in the large numbers of bacteria given. PMID- 3835082 TI - A curious histamine-sensitizing activity shown by the newly-developed Japanese acellular pertussis vaccine. AB - A new acellular pertussis vaccine, whose official name is "Precipitated Purified Pertussis Vaccine" (PPV), was prescribed in the Japanese Minimum Requirements for Biological Products in 1981. The PPV is composed of partially detoxified fractions of pertussis cells. The histamine-sensitizing (HS) activities of PPV vaccines are less than those of killed whole pertussis cell vaccines (WPV) produced in Japan until 1980, when the histamine challenge was carried out in mice on day four after injection. It was found that when the histamine challenge day was delayed that the HS activities of some lots of PPV gradually increased from those estimated on day four after injection of PPV and reached the maximum in about 12 days, while the activity of the reference whole cell pertussis vaccine reached the maximum several days after injection and then gradually decreased. Hereafter, HS activities of test materials estimated on days four and 12 after injection are referred to as early HS (EHS) and late HS (LHS) activities, respectively. Since LHS activity of the reference whole cell vaccine is lower than its EHS activity and the reverse is true with many lots of PPV, it is often observed that the EHS activity of PPV according to the Japanese requirement for PPV, ranges from 0.02 to 2.0 HSU whereas activities of some lots of PPV were estimated at 5.0 to 25.0 HSU. The relationship of the detoxifying process to EHS and LHS activities was studied with bulk materials, which were used for the purification procedure but prior to the detoxification process for the production of PPV.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835083 TI - A live vaccine against pertussis. AB - Animal experiments have shown that oral administration of live Bordetella pertussis induces a protective immune response. The biological properties of a nonpathogenic Bordetella pertussis strain, its toxicity and immunogenicity in mice were investigated. Comparative studies of the intraperitoneal and the oral route of immunization have shown that there was high mortality following intraperitoneal administration of the highest dose, whereas none of the doses of vaccine given orally led to appreciably higher mortality than that observed in control animals. The oral method of immunization when employing a stable, non toxic, live vaccine strain, may be of value for women of child-bearing age, pregnant women, and for pediatric and nursing personnel exposed to the risk of pertussis infection. Infants may benefit by transplacentally conferred protection as well as being actively immunized at an early age after birth. PMID- 3835085 TI - [Occupational and environmental pathology of the visual system]. PMID- 3835084 TI - [Aortocoronary arteriosclerosis: ultrastructural aspects and correlation with blood lipid parameters. Preliminary results]. PMID- 3835086 TI - [Importance of the determination of serum fructosamine in gestational diabetes]. PMID- 3835087 TI - [Use of pantethine in dyslipidemia of chronic uremic patients under dialysis treatment]. PMID- 3835088 TI - [Hepatotoxicity of dibekacin: correlation between the ultrastructural aspects and hemato-chemical parameters in an experimental model]. PMID- 3835089 TI - 3-Methylhistidine urinary excretion as an index of skeletal muscle protein metabolism: reference values. PMID- 3835090 TI - [Effect of diclofenac on the opiate withdrawal syndrome]. PMID- 3835091 TI - [Preliminary results of a long-term double-blind study of naftidrofuryl and a placebo in patients with moderate Alzheimer-type senile dementia]. PMID- 3835092 TI - [Cardiac sudden death. Testing of an extra-hospital emergency system]. AB - From December 1979 to April 1984, 266 victims of cardiac arrest outside the hospital in the metropolitan area of Florence received advanced cardiopulmonary resuscitation by a system for medical emergencies. 69 patients (25.9%) were successfully resuscitated and 42 (15.7%) were discharged alive from hospital without any neurological damage. The time delay between the onset of the cardiac arrest and the cardio-pulmonary resuscitation, the cardiac rhythm present on arrival of rescue squad, the degree of congestive heart failure immediately before the cardiac arrest and the neurological deficit after resuscitation significatively influenced immediate and late outcome. PMID- 3835093 TI - [Limitation of the area of necrosis induced by quinacrine after coronary occlusion in the dog]. AB - Phospholipase activation has been suggested to represent one of the most relevant biochemical steps toward irreversible myocardial injury during ischemia. Accordingly, the time-course of myocardial phospholipid degradation was studied in 167 rats surviving coronary artery occlusion randomly divided into 83 controls and 84 treated with the phospholipase inhibitor quinacrine (75 mg/Kg s.c. every 8 h). The animals were sacrificed at different times ranging from 2 to 48 h post occlusion and phospholipids and creatine kinase activity (CK) were measured on the supernatant of the left ventricular homogenates. In control animals a rapid fall in phospholipid concentration (from 1.33 +/- 0.12 to 0.67 +/- 0.05 microgram P/mg of protein) and CK activity (from 9.84 +/- 0.49 to 6.93 +/- 0.60 IU/mg of protein) was observed within 4 hours post-occlusion; these parameters remained almost unchanged throughout the rest of the study. In quinacrine-treated animals left ventricular phospholipids and CK also fell during the first hours post occlusion; however, 24 and 48 h after the occlusion they were significantly higher than in controls (phospholipids: 0.99 +/- 0.05 vs 0.62 +/- 0.04 microgram P/mg of protein, p less than 0.001, and CK: 7.76 +/- 0.54 vs 4.99 +/- 0.37 IU/mg of protein, p less than 0.001, at 48 h). The effect of quinacrine on the extent of necrosis was then assessed in 13 anesthetized dogs undergoing ligation of the left anterior descending coronary artery. To measure the area at risk (RZ), 99Tc PP labeled albumin microspheres were injected into the left atrium 5 min after coronary occlusion.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835094 TI - 10-year follow-up of patients with intraventricular conduction defects associated with myocardial infarction: the meaning of QRS duration. AB - The 10-year survival rate of 66 patients discharged after an acute myocardial infarction associated with intraventricular conduction delay is reported. The whole population under study consisted of 321 patients followed for 10 years or until death. In 46 patients (69.7%) the conduction delay was a definite complication of infarction, in 15 (22.7%) it preceded the acute event and in 5 (7.5%) the time of onset was undetermined. Mortality in the presence of a conduction delay was 74.2% in 10 years vs 39.2% in its absence (p less than .001). Death was sudden in 41.6% of fatalities when a conduction defect was present and 28% in its absence (p less than .01). The 10-year survival was 55% in patients with conduction defects and QRS less than .12 sec duration, 23.8% if QRS was between .12 and .14 sec, and 4% when QRS duration was greater than .14 sec. 72% of patients of this latter group was in NYHA class 3 or 4, whereas 70% of patients with QRS less than .12 sec and 47% of patients with QRS .12 to .14 sec were in class 1 or 2. These data show that long-term prognosis of conduction delay associated to myocardial infarction is poor and stratification of risk of death is possible among these patients on the basis of QRS duration. PMID- 3835095 TI - [Hypotension during ventricular pacing. A study of the vagal reflex component]. AB - It has been suggested that hypotension during ventricular pacing (V) could be caused by a parasympathetic vasodilating reflex. In order to evaluate this hypothesis, we studied 10 patients who had wide fluctuations of arterial pressure during V. Intra-arterial pressure, right atrial pressure, EKG and cardiac index (thermodilution) were determined in the following conditions: basal rhythm (B), V, atrioventricular pacing (A-V) and ventricular-atrial pacing (V-A). The same investigations have been carried out in the same conditions (B,V,A-V,V-A) after atropine 0.03 mg/Kg intravenously. The arterial blood pressure during V decreased markedly simultaneously with the appearance of cannon waves in the right atrial pressure tracing. During A-V the arterial pressure remained stable at the highest level observed during V. The start of V-A pacing induced a marked drop of arterial pressure, which, however, gradually increased to a level slightly lower than during A-V pacing. After atropine the arterial blood pressure during V decreased again in all patients concomitantly to the appearance of cannon waves in the atrium as before atropine. The values of arterial blood pressure during B, A-V and V-A were not different from those measured before atropine. Therefore, an increase of parasympathetic activity during V is not responsible for the wide fluctuation of arterial blood pressure. A possible role of sympathetic failure must be considered. PMID- 3835096 TI - [The retriggerable refractory period: a rare cause of apparent sensing malfunctioning in various types of VVI pacemakers]. AB - The retriggerable Refractory Period (RP) is an anti-interference device that causes prolongation of the RP in the presence of rapid false signals. The device starts functioning when a suprathreshold impulse manifests during the second half of the RP of the pacemaker; in such a case the RP itself is retriggered, i.e., re starts from the moment in which the retrigger occurs. As a consequence, the time during which the pacer cannot be recycled is prolonged. We report a case of unusual pseudo-malfunction caused by the retriggerable RP observed in a patient paced with a Lit 222 Sorin VVI pacemaker. Spontaneous QRS complexes coupled up to 480 ms appeared as not senses, i.e. did not reset the pacemaker, whereas complexes occurring at 510 ms or more from the spike provoked a normal recycling, and complexes coupled at 490-500 ms resulted in partial recycling. This pattern has been interpreted assuming that a spurious signal (probably an afterpotential) occurs shortly after the paced stimulus. Such a signal falls in the retriggerable RP, resulting in prolongation of the RP. Spontaneous QRS, thus, cannot be sensed until 480 ms from the paced impulse. The chest wall stimulation has clarified the principles governing the functioning of the retriggerable RP. When the RP is retriggered three times in the course of a single pacemaker cycle, the pacer varies its mode of functioning, being the pacing rate increased to a value identical to the magnet rate. Furthermore, the RP is extremely prolonged, occupying the 90% of the pacing interval; only impulses occurring during the last 80 ms, thus, are able to reset the PM.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835097 TI - [The influence of age on left ventricular function in patients with recent myocardial infarct]. AB - To assess the effects of age on the left ventricular function at rest and during exercise in patients with first recent myocardial infarction, a symptom-limited exercise test was performed in 470 patients within 2 months from the acute episode, in supine position during hemodynamic and electrocardiographic monitoring after drug interruption and wash-out period. According to the age, the patients were divided into 3 groups: group 1 (less than or equal to 40 years) 68 patients; group 2 (41-59 years) 319 patients and group 3 (greater than or equal to 60 years) 83 patients. Coronary angiography was performed within 6 months in 159 patients. The possible differences in the hemodynamic pattern of these groups were analyzed with ANOVA and chi 2 test. Pulmonary artery end-diastolic pressure and cardiac output of each patient were compared to the normal values obtained in different age groups. The normal limits adopted are reported. At rest cardiac output and stroke volume were significantly lower and the rate pressure product higher in patients of group 3. Maximal work load was significantly lower (62 +/- 26 watts p less than .05) and pulmonary artery end-diastolic pressure higher (27 +/- 7 mmHg, p less than .05) in group 3 as compared to groups 2 (78 +/- 29 watts, 23 +/- 8 mmHg) and 1 (94 +/- 28 watts, 19 +/- 9 mmHg). However using different normal limits according to age (less than or equal to 20 mmHg in patients less than or equal to 60 years and less than or equal to 25 mmHg in patients greater than 60 years) the number of patients with an abnormal increase of pulmonary artery end-diastolic pressure was similar in all groups: 39.7%, 60.6% and 50.6% (NS) in group 1, 2 and 3 respectively. On the contrary cardiac output was abnormally low during exercise in 16.8% of group 3 vs 5.6% and 5.8% of groups 2 and 1 (p less than .05). The greater hemodynamic impairment of group 3 was independent from the electrocardiographic size of necrosis, from ST-segment depression during exercise and from the number of involved coronary vessels. In conclusion, age seems to play a significant role in determining the hemodynamic pattern in patients with recent myocardial infarction. PMID- 3835098 TI - [Heart rupture as a complication of myocardial infarct in the acute stage. Case contributions and clinical course of survivors]. AB - Heart rupture was found in 25 (4.4%) of 560 patients with myocardial infarction admitted to the Coronary Care Unit of the Department of Cardiology, Padua Medical School. Ten (40%) of them had a breaking of the free wall, 10 the interventricular septum, 4 (16%) a papillary muscle and 1 (4%) the ventricular wall with formation of a pseudoaneurysm. Thirteen patients died suddenly, the other 12 (48%) had cardiac catheterisation and later surgery. Four patients with interventricular defect died immediately after surgery, the other patients were discharged. Mortality was 68%; 30% on the patients with VSD as well as those with papillary muscle rupture and pseudo aneurysm survived. PMID- 3835099 TI - [Reinterventions on cardiac valve prosthesis]. AB - From January 1978 to December 1984, 214 patients underwent a total of 243 reoperations for repair or replacement of a prosthetic heart valve. On the basis of the number of valve reoperations in the same anatomic position within the heart, the patients were divided into three groups. Overall hospital mortality was 23.4% (CL 20.3-26.7) in Group I (214 patients), 48% (CL 36.1-60.1) in Group II (25 patients), 25% (CL 3.3-62.6) in Group III (4 patients). Hospital mortality appeared to be related to urgency of reoperation (p less than 0.001 in Group I; p = 0.037 in Group II), primary indication for reoperation (p = 0.034 in Group I; p = 0.022 in Group II), association with other cardiac surgical procedures (p = 0.00253 in Group I). Hospital mortality in Group I was significantly higher (p = 0.0056) when reoperation was performed within one year after valve replacement. No significant differences in urgency and emergency rate were noted between reoperations on mechanical heart valves and bioprostheses. No significant differences in bleeding complications were noted between reoperations and initial valve replacement. Mean follow-up is 37.4 +/- 21.8 months (range 2 to 85 months). Actuarial survival rate is 82.8 +/- 3.1% at 1 year, 78.7 +/- 3.5% at 2 years and 71.5 +/- 5.1% at 5 years; 90.9% (CL 87.4-93.6) of the followed patients are in I or II NYHA class. The results appear to suggest that when significant (on clinical or instrumental criteria) prosthetic disfunction is diagnosed, reoperation should be undertaken early to minimize operative risk. The Authors point out that surgery in such patients also ensures satisfying long-term results. PMID- 3835100 TI - [The exercise test in variant angina]. PMID- 3835101 TI - [Kearns-Sayre syndrome and mitral valve prolapse. Description of a clinical case]. AB - We report a clinical case with chronic progressive external ophthalmoplegia, retinal pigmentation and left anterior hemiblock (Kearns-Sayre Syndrome) associated with mitral valve prolapse. The mitral valve prolapse is present in familiar neuromuscular diseases. We think that mitral valve prolapse is expression of diffuse metabolic process of muscular heart in Kearns-Sayre Syndrome. PMID- 3835103 TI - [Isolated right ventricular infarct. Description of a case]. AB - We report a case of extensive isolated right ventricular infarction, which was the result of proximal occlusion of a small right coronary artery in a dominant left coronary arterial system. The diagnosis and treatment of right ventricular infarction are discussed and the literature is reviewed. PMID- 3835102 TI - [Clinical, electrocardiographic and echocardiographic findings in a case of vasospastic angina with alternating pseudonormalization of the ST segment]. AB - During Ergonovine-test a patient with Prinzmetal angina presented (in I, aVL, V3 V6) ST downsloping which, after a temporary phase of alternative normalization (AST) beat to beat in V5, progressed to ST upsloping with typical angina. The M mode echo-study first discovered, before than ecg, septal impairment (hypokinesia which increased to akinesia in the AST phase) and also asynergy of posterior wall of left ventricle. After intravenous nitrate echo-alterations reversed more rapidly than ecg one (transitional phase of ST decrease). The authors relate the AST to temporary alternative pseudonormalization caused by a phase of electrical instability during progressive vasospastic ischemia involving first the endocardial layers and after the epicardium of a single myocardiocoronary district. Probably also other partially opposite ischaemic districts, as suggested from echo data of posterior wall asynergy took a part in these events. This rare ST-alternans type as new pseudonormalization phenomenon and the usefulness of echo-study during ischaemic attacks are stressed. PMID- 3835104 TI - [Strategies for health education in cardiology]. AB - Health education still lacks content and represents an undefined field. Nevertheless, it may be a cheap, simple and reliable tool to offer the public, thus giving them knowledge concerning the prevention and the treatment of and the rehabilitation from heart disease. Different strategies are available, but it is of paramount importance for physicians and nurses working in the field of cardiology, to change their attitude in approaching patients and to have specialized training. Numerous post-graduate courses dealing with new diagnostic and therapeutic procedures are continuously conducted in our Country. On the contrary, very little has been done to stimulate medical staff to be interested in acquiring knowledge of prevention and health education methodology and practice. Health policy should therefore be directed to this goal, and the performance of the Centres of Cardiology might be augmented with the help of volunteer organizations. PMID- 3835105 TI - Description and implications for analysis of brain growth in suckling mice. AB - The growth pattern of the brains of normal CD-1 mice was studied from day 1 through day 21 after birth. The main purpose of the study was to decide on suitable methods of statistical analysis of these kinds of data including whether to analyze brain weight or the brain-to-body weight ratio. A secondary purpose, which aided the main purpose, was to find functions that describe the relationships between growth parameters. Linear-linear segmented polynomials were found to describe well the relationships between brain weight and body weight, brain weight and age, brain-to-body weight ratio and body weight and brain-to body weight ratio and age. The analyses indicated that brain weight alone is the preferred variable to analyze. Regression analysis of brain weight with sex and up to the first three powers of body weight and age as independent variables would be a suitable method of analysis. Litter size per se had no effect on brain weight. PMID- 3835106 TI - Segmental heterogeneity of enzymatic response during compensatory renal growth. AB - The activities of DNA polymerase alpha and key enzymes of gluconeogenesis and glycolysis were measured in different segments of the rat nephron at various times (up to 96 hrs) following a unilateral nephrectomy (UNx). Tubule fragments were obtained after collagenase treatment followed by centrifugation on a Percoll gradient. The DNA polymerase alpha activity in control rats showed moderate and similar values in different segmental extracts as well as in the whole kidney extract (1700-1800 mumumole [3H] dAMP/mg DNA). In UNx rats, activity in proximal tubules (PT) measured at 24, 48, 72 and 96 hrs after nephrectomy represented an increase of 60%, 200%, 420% and 370% respectively over control values. Distal tubule fragments (DT) showed only minor increases. The results demonstrate that the proximal tubule accounts for most of the compensatory renal growth (CRG) in the remaining kidney. The gluconeogenic and glycolytic enzymes were confined to the PT and those of glycolysis to the DT fragments. Following UNx, the specific activities of these enzymes were not modified in the remaining kidney; however, the overall activity of gluconeogenesis was increased as a result of the cell hyperplasia occurring in the PT. Our work also illustrates that biochemical studies of CRG on the whole organ may provide misleading information due to the presence of heterogenous cell populations in the mammalian kidney and to their uneven response in CRG. PMID- 3835107 TI - A brief study of within litter and within strain variation in skeletal muscle fiber number in three lines of laboratory rodents. AB - The purpose of this study was to describe the soleus muscle fiber number variation within litter and within strain of three lines of laboratory rodents in an effort to determine the value of these lines in muscle fiber number research. The three lines of laboratory rodents used for the study were inbred mice (18 litters, 113 animals), outbred mice (8 litters, 97 animals), and inbred rats (14 litters, 126 animals). The animals were sacrificed at approximately 7 weeks of age and the soleus muscle from the right leg was removed for fiber number determination. Fiber number was determined by the nitric acid digestion method. The mean percent difference between the animals with the highest and lowest fiber number within litters was 14.4%, 13.0%, and 18.3% for inbred mice, outbred mice, and inbred rats, respectively. This was substantially less than the 38.2%, 27.8%, and 49.1% differences, respectively, that existed within strain. The results of this study indicate that fiber number variation within litter and within strain in the three lines of laboratory rodents used in this study would make comparison of fiber number between animals difficult to interpret. PMID- 3835108 TI - Effect of increased growth rate during the suckling period on subsequent body weight and muscle weight to body weight ratio. AB - The effect of increased growth rate during the suckling period on subsequent body growth rate and muscle weight to body weight (MW/BW) ratio was examined in inbred and outbred male and female mice. Growth rate during the suckling period was increased by reducing litter size to 4 pups within six hours of birth. Body weight, MW/BW ratio, and dry weight to wet weight (DW/WW) ratio for the soleus, tibialis anterior, extensor digitorum longus, biceps brachii, and heart muscles were measured at 4, 8, 16, and 24 weeks of age. The results indicate that increasing growth rate during the suckling period results in an increased body weight at 24 weeks of age in outbred male and female mice; whereas, in inbred male and female mice body weight is greater at 4 weeks of age but by 8 weeks of age the mice raised in normal litters have "caught up" with those raised in small litters. MW/BW ratio is increased in several muscles during the suckling period but returns to normal during the post weaning period. PMID- 3835109 TI - The effects of steroids on respiratory tolerance and somatic growth in gender specific asphyxiated newborn rats. AB - Gender-specific newborn rats were randomized into two treatment groups: experimental (received steroid) and control (administered normal saline). Steroid treatment was initiated on 2nd day of life. Hydrocortisone sodium succinate at 10 mg/kg was administered intraperitoneally every 12 hours for four doses. On 3rd day of life, after the last dosage, all rats were asphyxiated once in a standardized manner. Steroids had no effect in improving respiratory tolerance. The experimental group in both genders, but more predominantly in females, gained less body weight compared to control littermates. However, no differences in somatic growth was detected between genders. This finding in newborn rats is in contrast to older rats where males are reported to be less resistant to the growth retarding effects of steroids. PMID- 3835110 TI - Energy and protein relations in the broiler chicken. 2. Effect of varied protein and constant carbohydrate levels on body composition and lipid metabolism. AB - Male broiler chicks were fed diets containing 18, 23 or 30% protein on an ad libitum basis for 3 weeks. Chicks were also fed these diets on a restriction regime consisting of seven 3-day cycles (2 days with and 1 day without feed). Another group of chicks were fed diets containing 12, 23 or 30% protein on a 3 day rotation consisting of a daily change in dietary protein. Ad libitum. Feed intakes of chicks were inversely (P less than .05) related to the level of the dietary protein. Body composition data seemed to support a positive (P less than .05) relationship between dietary protein and total carcass protein and an inverse (P less than .05) relationship between dietary protein and carcass fat. In vitro lipogenesis was greater (P less than .05) in chicks fed an 18% protein diet than in chicks fed either 23 or 30% protein diets. Restricted. Protein levels had no effect on lipogenesis in chicks fed on a restriction regime but regulated lipogenesis in chicks fed on the rotational regime. Fatty acid synthetase, malic enzyme and isocitrate dehydrogenase activities, when measured during the rotational regime, were greatest following the 12% diet and least following the 30% diet. Enzyme activities, determined during the restriction regime, were greatest (P less than .05) after 1 day of refeeding and least (P less than .05) after 1 day of feed withdrawal. Measurement of net glucose production in vitro indicated that high-protein diets and feed withdrawal stimulated production of glucose. PMID- 3835111 TI - Static genetic and phenotypic allometry of dental traits in inbred and hybrid house mice. AB - Static allometric coefficients were estimated by regression and reduced major axis methods for second and third mandibular molar widths scaled on body weight in 42-day-old inbred and hybrid house mice. Phenotypic slopes were calculated by combining inbred and hybrid strains, and genetic slopes were obtained from differences among the strains. It was hypothesized that the genetic scaling, which reflects the expected evolutionary allometry between populations if they have been produced from directional selection on body weight alone, would exceed the phenotypic scaling. The genetic coefficients were generally higher (average regression estimates in inbreds = 0.65) than the phenotypic ones (comparable average = 0.47), but the differences were non-significant. It was concluded that the higher scaling of tooth dimensions in interspecies versus intraspecies comparisons typically found in previous studies therefore could not necessarily be explained as a secondary response to selection for body size, although more information is needed about trends in the scaling of mammalian teeth at different ages. PMID- 3835112 TI - An aspect of growth analysis of weight in savannah baboon. AB - Two approaches on growth analysis were discussed for the longitudinal growth data in body weight for the savannah baboon. A relative measure of maturity was proposed for setting up empirical growth models of body weight from birth to adulthood. A generalized logistic type growth model was suitable for the growth of body weight of the male savannah baboon and a Gompertz type growth model was better for female than a generalized logistic type model. Based upon the average weights, some characters of growth curves were statistically estimated for the average male and female. The ages of onset and completion of adolescence were defined mathematically rather than biologically. The growth models were linearized for comparing and predicting sample growth curves by transforming the time scale. The relative amounts of information per observation were shown in the figure which might be useful for designing an observation scheme in longitudinal growth study. PMID- 3835114 TI - In vitro susceptibility of gram negative bacteria to amikacin and its comparison with three other aminoglycoside antibiotics. PMID- 3835113 TI - Allometric growth of the rat peritoneal mast cell mass and of the granular constituents: heparin, histamine and 5-hydroxytryptamine. AB - This paper reports an attempt to measure the normal growth of connective tissue mast cells in rats aged 6 to 24 weeks. We used peritoneal mast cells as a model, and calculated the total mast cell mass and the mass of its components from total peritoneal mast cell numbers and their content of protein, heparin, histamine and 5-hydroxytryptamine (5-HT). The growth process was analysed with the aid of allometric, log-log plots of mast cell quantities versus body weight and linear regression, in order to facilitate comparisons with other systems, notably the lymphoid apparatus. We found that the growth of peritoneal mast cells conformed to the allometric principle (r = 0.91 to 0.93). There were no deviations from linearity or changes in the slope (growth rate constant, k) of the allometric lines within the studied growth interval. K ranged from 1.3 to 1.7, indicating that the mast cell mass and its different components grew at a faster rate than the body as a whole, typical of a late maturing cell system. The mode of growth of the peritoneal mast cells is thus distinctly different from that of the lymphoid system, and neither thymus involution nor sexual maturation appears to influence the growth of these cells. PMID- 3835115 TI - Alcoholic liver disease in north India--a biopsy study. PMID- 3835116 TI - Observations on the role of vespertilionid bats in relation to non-human vertebrate reservoir in Indian kala-azar. PMID- 3835117 TI - Benign cystic teratoma (dermoid) of the testis. A case report. PMID- 3835118 TI - Histoplasma colitis. PMID- 3835119 TI - Subcutaneous phycomycosis. PMID- 3835120 TI - Salmonella mbandeka--rare serotype isolated in Ambajogai--a rural area. PMID- 3835121 TI - Bacteriological study of Salmonella newport strains isolated during an epidemic in Delhi. PMID- 3835122 TI - Acute effects of alcohol on platelet functions. PMID- 3835123 TI - Serum ceruloplasmin in cirrhosis and chronic active hepatitis. PMID- 3835124 TI - Serum ceruloplasmin in infective hepatitis. PMID- 3835125 TI - Subcutaneous nodules in brucellosis. PMID- 3835126 TI - An evaluation of conventional tests for serodiagnosis of rheumatoid arthritis & factors influencing seropositivity. PMID- 3835127 TI - Rhinosporidiosis in Amritsar (Punjab). PMID- 3835128 TI - Mycosis fungoides (a case report). PMID- 3835129 TI - Proliferative myositis (report of two cases). PMID- 3835130 TI - A giant cell tumor in the hand (a case report). PMID- 3835131 TI - Poliomyelitis through the ages. PMID- 3835132 TI - Poliomyelitis and the control programme. PMID- 3835133 TI - Immunisation against poliomyelitis--present concepts and practice. PMID- 3835134 TI - National programme for the control of poliomyelitis. PMID- 3835135 TI - Paralytic poliomyelitis in children: some facts and figures from a hospital at Calcutta--1. PMID- 3835136 TI - Paralytic poliomyelitis in children--Part II. Age, sex and seasonal distribution. PMID- 3835137 TI - Some bio-social factors for drop out of children undergoing oral polio vaccination. PMID- 3835138 TI - Poliomyelitis surveillance in Delhi. PMID- 3835139 TI - Serum ferritin in healthy school children. PMID- 3835140 TI - Craniofacial malformations. PMID- 3835141 TI - Immunisation status of children below 5 years in a defined rural population. PMID- 3835143 TI - Foreign body in the esophagus. PMID- 3835142 TI - Correlation of permanent teeth, stature and weight. PMID- 3835145 TI - Tuberous sclerosis. PMID- 3835144 TI - Uretero-pelvic obstruction. PMID- 3835146 TI - Unilateral diaphragmatic paralysis due to tuberculous hilar adenitis. PMID- 3835147 TI - First branchial cleft sinus: a diagnostic trap for the unwary. PMID- 3835150 TI - Immunisation of children using the alternate strategy. PMID- 3835148 TI - Cobalt in Indian childhood cirrhosis. PMID- 3835149 TI - Unusual iatrogenic complications of intravenous therapy. PMID- 3835151 TI - Achondrogenesis-I. PMID- 3835152 TI - The psychological niche of older Japanese and Americans through auto-photography: aging and the search for peace. AB - In an effort to understand aging cross-culturally, photography as a universal language was used to perceive the perceiver. Persons averaging seventy-three years of age from Japan and the United States were asked to describe "Who are you?" by taking (or having someone else take) six photographs. A content analysis of the photographs showed that older Japanese appear to be inward oriented (inside own territory, gardens, residence) and aesthetically oriented, while older Americans were more oriented toward other people. The results were interpreted in terms of differences in the search for peace. Peace is sought through self-harmony in the orient, but through social harmony in the occident. PMID- 3835153 TI - Therapists' attitudes as explanation of underservice of elderly in mental health: testing an old hypothesis. AB - The literature in mental health and aging has long argued that the presumably negative attitudes of therapists toward the aged are a major barrier to the aged receiving psychotherapy services. This investigation compared two measures of attitudes in a college student sample in order to test the reliability and validity of two commonly used measures of attitude in the general population. The same scales were then used in a sample of sixty-six mental health workers. The results suggest that Likert ratings and semantic differentials, although tapping a common dimension, differ in sensitivity to personal experience with the aged, that therapists had more positive beliefs about the elderly than did college students, and that therapist attitudes were not correlated with either proportion of elderly clients seen or desire to work with elderly. Work site emerged as an important predictor of numbers of elderly seen by therapists. It is argued that future research ought to focus on systems level variables in seeking to overcome barriers to therapy. PMID- 3835154 TI - Age differences in processing: assessments of depth, elaboration and encoding retrieval compatibility with multidimensional scaling. AB - Young, middle-age, and old adults ranked similarities of word pairs in a conditional rank-ordering task. Multidimensional scaling analyses of those similarity judgments provided measures of depth of processing (the kind of attribute dimensions considered in ranking similarities) and elaboration (the number of dimensions considered). Analyses of variance revealed an age-related decline in semantic processing but no such decline for elaboration. In recalling the words after the rank-ordering task, old adults' retrieval was less compatible with initial processing than was the case for younger adults, i.e., there was less correspondence between inter-word distances in recall and in the scaling solutions. The results confirmed the feasibility of multidimensional scaling methods for evaluating levels-of-processing issues. PMID- 3835155 TI - The church and the elderly: the impact of changing age strata on congregations. AB - This study reports the results of a survey of forty-four Lutheran Churches in the New York metropolitan area. It describes present and projected services and programs churches offer to the elderly, specifically investigating the impact of changing age strata upon congregations. A significant relationship was found between proportion of the elderly within the congregation and the pastors' interest in developing specialized ministries to the elderly. There was also a significant relationship between the proportion of the elderly within the congregation and the pastors' interest in structural modifications of the church building. However, no significant differences were found between the proportion of elderly with the congregation and the actual programs and services to the elderly. This may be an indication that churches with high proportions of the elderly had less financial and congregational resources. PMID- 3835156 TI - Self-assessed and functional health of older women. AB - This study examines the contributions made by functional health, age self concept, and attitudes, and demographic variables toward explaining health self assessments in a sample of older women. The participants in the study were a simple random sample of white females (114) over age sixty years and who were residents in five apartment complexes for the aged in a large Midwestern city. Significant correlations to self-assessment of health were found among measures of functional health, self-concept and attitudes, and demographic variables. Multiple regression analysis using five variables (self-assessment of speed, emotional behavior, age self-concept, body care and movement, and occupation) explained almost 40 percent of variance in self-assessment of health data. PMID- 3835157 TI - Age stereotyping: are we oversimplifying the phenomenon? AB - This study investigates the use of age stereotypes in evaluating individuals' behavior in context-specific situations. One hundred university students assessed young male, young female, old male, and old female characters in four vignettes using the Rosencranz and McNevin Semantic Differential. The data revealed limited but conflicting evidence of the use of stereotypes when the stimuli portrayed target characters in lifelike situations rather than in an experimental vacuum. It is argued that while stereotyping can occur in specific contexts, its form is greatly influenced by other aspects of the situation. The need to reconceptualize the notion of stereotypes of the elderly is discussed, and a shift in emphasis toward the analysis of subgroup stereotypes as opposed to one consistent global stereotype of old age is urged. PMID- 3835158 TI - The epididymal factor--a diagnostic approach. PMID- 3835159 TI - Spontaneous improvement in semen quality: regression towards the mean. AB - Regression towards the mean was demonstrated in semen analyses from 216 donors for artificial insemination by selecting those with low sperm concentration (less than 40 X 10(6)/ml), low motility (less than 50%) or low motility index (less than 120) in the first test. For each characteristic, the result was significantly higher in the second test, the means for first and second tests being, for sperm concentration 28 and 56 million per ml (n = 14, P less than 0.01), for motility 42 and 55% (n = 14, P less than 0.01) and for the motility index 95 and 131 (n = 24, P less than 0.001). Regression towards the mean occurs whenever extremes of the range of a variable and selected for re-measurement. Many of the current treatments for oligospermia and asthenospermia have been promoted because semen quality improved during uncontrolled studies in which this phenomenon may have been operative. Using means of multiple samples before and following therapeutic intervention will not prevent regression towards the mean, only reduce its magnitude. Thus, placebos are essential in the evaluation of treatments for male infertility. PMID- 3835160 TI - Are conventional sperm morphology and motility assessments of predictive value in subfertile men? AB - Sperm morphology and motility are believed to be important prognostic factors for fertility. Results of a group of 67 men investigated for primary infertility who had mean sperm concentrations greater than 5 million per ml and who later produced pregnancies, were compared with those of 67 matched controls who remained infertile. All female partners were potentially fertile. The groups were matched for other known prognostic factors for fertility, namely, wife's age, the duration of infertility, sperm concentration and varicocele size. There were no significant differences between the two groups overall in the (mean +/- SEM)% of sperm with normal morphology (58.3 +/- 2.1; 58.5 +/- 2.2), or motility (40.6 +/- 1.8; 37.0 +/- 2.0). However, among oligospermic men from the two groups, sperm motility was significantly higher (P less than 0.05) in the subsequently fertile group (43.1 +/- 2.6%) than in the persistently infertile group (33.3 +/- 3.7). These results indicate that sperm morphology as currently assessed may not be important in predicting fertility in subfertile men with a mean sperm concentration over 5 million/ml and the % sperm motility may only be a relevant predictor in oligospermic men. PMID- 3835161 TI - Postnatal differentiation of the enzymatic activity of the mouse epididymis. AB - Dehydrogenase and hydrolase activities were assessed histochemically during postnatal development of the mouse epididymis. At birth the activities of various enzymes were demonstrable along the epithelium at the same intensity. Variations occurred in the intensity of enzyme activities in principal cells, leading to regional differentiation which progressed according to an ascending pattern from the distal part (2nd week) to the medial and proximal parts (3rd week). The proximal part reached its definitive differentiation at the 4th week when the 5 segments characteristic of the adult state were distinguishable. At the same time, 3 types of "apical cells" (narrow, prominent and mitochondria-goblet cells) in the proximal part and "clear cells" in the medial and distal parts showed higher activity of several enzymes (dehydrogenases, acid phosphatase, Ca2+ ATPase) than did adjacent principal cells. This histochemical data has led us to propose a model for epididymal cell differentiation in the mouse. The role of androgens in the development of those regional differences is discussed. PMID- 3835162 TI - Inhibition of liquefaction and protein degradation in human semen by gossypol. AB - The liquefaction of freshly ejaculated human semen was delayed by gossypol. Liquefaction is normally accompanied by an autolytic degradation of semen proteins, and prior incubation with gossypol can inhibit factors (presumably proteinases) present in seminal plasma that degrade semen proteins. The possible consequences of this inhibition are discussed in relation to the proposed use of gossypol as a vaginal contraceptive. PMID- 3835163 TI - Thoracoplasty with intercostal myoplasty for closure of an empyema cavity and bronchopleural fistula. AB - Intercostal myoplasty with thoracoplasty was performed in 42 patients with tubercular and bacterial empyema, after the failure of conventional therapy with antibiotics, antitubercular drugs and closed drainage. In the 18 cases with bronchopleural fistula, this was closed and the drainage tube was removed after 23 to 51 days. The procedure was well-tolerated by all the patients, and is safe and effective in patients with chronic empyema with or without bronchopleural fistula where resectional surgery or decortication is not possible due to extensive bilateral disease or low cardiorespiratory reserve. Successful ligation and closure of bronchopleural fistula without any mortality was a unique feature of this procedure. PMID- 3835164 TI - A comparison of three different prophylactic parenteral antibiotic regimens in colorectal surgery: a prospective study. AB - A double-blind, prospective, randomized study was performed with 90 patients undergoing colorectal surgery, to ascertain the prophylactic effect of three different parenteral antibiotic programs. The patients were divided into three groups. The patients in group 1 received 80 mg Gentamycin and 600 mg Lincomycin intramuscularly, two hours preoperatively, and every eight hours postoperatively for three days. In group 2, the treatment was similar to group 1 but the Lincomycin was replaced by 600 mg Clindamycin. In Group 3, the treatment was also similar to group 1, but 500 mg Metronidazole given over 20 minutes replaced the Lincomycin. The present study, the first comparing three antianaerobic antibiotics and an aminoglycoside in the prophylaxis of infection in colorectal surgery, shows certain clinical and socioeconomic benefits, although not statistically significant to be found in the group 3 program (Gentamycin plus Metronidazole) as compared with the other programs. This advantage was no doubt due to the use of Metronidazole (used in group 3 only), because of its effectiveness against anaerobic bacteriae. PMID- 3835165 TI - Guide tube for the transanal use of circular staplers. AB - Guide tubes of three different diameters with corresponding inner obturators are very useful in rectal surgery, as they facilitate anorectal intubation, evacuation of residual gas after preoperative coloscopy and sub-peritoneal dissection of the rectum at the future anastomotic site. After withdrawal of the inner obturator, the circular stapler (EEA or ILS) can be introduced aseptically and without trauma through the guide tube, and the various adjustment markings of the stapler can easily be checked at any moment during the last stages of the procedure. Guide tubes are now used, by the author, for the execution of all intestinal anastomoses, whether end-to-end or end-to-side, low in the rectum. PMID- 3835166 TI - The effects on colonic mucosa of transposition to the stomach. AB - In order to investigate the morphological and functional changes produced in the colonic mucosa after prolonged exposure to gastric juices, 24 colonic patches were implanted on the gastric body and the gastric antrum. The specimens were removed, two, four or six months after surgery, and several morpho-functional changes were observed. These included a gastric-like transformation of the superficial epithelial cells, the presence, exclusively in the colonic patches implanted in the gastric body, of cells with large osmiophilic cytoplasmic granules and a progressive increase in sialomucin secretion with an almost complete disappearance of sulfomucins. PMID- 3835167 TI - Effects of pharmacological doses of synthetic salmon calcitonin on wound healing in rats. AB - The effect of pharmacological doses of synthetic salmon calcitonin (CT) on the healing of experimental wounds in rats is studied. Subcutaneous administration of 20 IU/Kg body weight/day induces a significant increase in collagen content in the scars of treated animals at five, eight, ten and 15 days, as compared with the scars of non-treated animals. The scars of the treated animals also showed a greater tensile strength (TS) than those of the control group, except on day 8. PMID- 3835168 TI - Prostaglandin Bx in the prevention of stress ulcers in rats. AB - The effect of Prostaglandin Bx (PGBx) on the development of gastric stress ulceration and bleeding in rats was investigated. The rats were divided into five groups and each rat was injected intravenously with either Saline (control), 0.5 mg, 1 mg, 5 mg, or 25 mg/kg of PGBx, according to group. The rats were then placed in wire conduit cages and placed in a cold room at 4 degrees C for three hours and sacrificed immediately afterwards. Results showed a significant increase in gastric bleeding and ulceration in the groups that received 1 and 5 mg/kg (PGBx) when compared to the control group (p less than 0.01). There was, however, a significant increase in gastric acid output in the group that received 1 mg/kg PGBx when compared to the control group (p less than 0.01). Our results suggest that PGBx, by a mechanism other than the inhibition of gastric acid secretion, maintains the integrity of the gastric mucosa. PMID- 3835169 TI - Pedicled omental grafts in the revascularization of ischemic lower limbs in Buerger's disease. AB - Pedicled omentum, after lengthening, was transferred to the ischemic lower limbs of 12 patients with Buerger's disease to assess its capacity to improve the blood supply to these compromised extremities. The immediate (after one month) and long term (9-12 months) results were encouraging. After one month, rest pain had diminished in 83% of cases, claudication was relieved in 75% of cases, temperature became normal in all cases (100%) and ischemic ulcers either healed or showed signs of healing in 83% of cases. During long-term follow up (after 9 12 months), the results deteriorated slightly, but they remained promising. Rest pain had disappeared in 80% of cases. Claudication was still relieved in 70% of cases, temperature was still improved in 60% and ulcers had healed completely in 67% of cases. PMID- 3835170 TI - Secondary hyperparathyroidism and thyroid cancer. AB - To the best of our knowledge this is the first report of two cases with concomitant secondary hyperparathyroidism and thyroid cancer. Despite previously published reports of a possible association between primary hyperparathyroidism and non-medullary thyroid cancer, we believe that such an association is coincidental. Nevertheless, increased awareness of the possibility of encountering and treating both diseases at the same time is advisable. PMID- 3835171 TI - Gastric rupture: a danger of postoperative oxygenation with a nasal catheter. AB - On the fifth postoperative day after pulmonary lobectomy, a 64-year-old man accidentally connected his nasal catheter (providing six liters of oxygen per minute) to his nasogastric tube. Tension pneumoperitoneum occurred with acute respiratory distress. Gastric rupture occurring during cardio-pulmonary resuscitation has been reported several times. Our case illustrates another unusual cause of tension pneumoperitoneum. Emergency percutaneous decompression was effected with needle aspiration, followed by laparotomy for gastric repair covered by an omental flap. PMID- 3835172 TI - A case of anomalous adrenal position: the adrenal-renal heterotopia. AB - The authors describe a case of adrenal-renal heterotopia. The embryological basis for this anomaly and its clinical significance are reviewed. PMID- 3835173 TI - Morphometric and histological examinations of dog kidneys after embolization of the renal artery with the cyanoacrylic glue "Chirurcoll-Polfa". AB - The renal artery in 20 mongrel dogs was embolized with cyanoacrylic glue "Chirurcoll-Polfa", introduced through a catheter. The extent of the resulting renal infarction of the kidneys was evaluated morphometrically and was found to be 71.35 to 91.43% of the volume of the embolized kidneys (mean 77.61%). Histological examinations revealed no resorption of the glue after 3 months. In the embolized vessels, after 7 days tumefaction and degeneration of the reticulin, elastic, and collagen fibres were observed, after 24 days inflammatory changes, and after 2 and 3 months respectively, secondary collagenization and hyalinization. Inflammatory changes were also found in the perivascular tissue. In the sections of the kidneys not involved in the infarction a progressive atrophy of the nephrons and fibrosis of the parenchyma were observed 2 and 3 months after embolization. PMID- 3835174 TI - Effect of levamisol on cellular and humoral immune reactivity and on recurrences in patients with bladder papilloma. AB - Ten patients who had undergone repeated surgical interventions for bladder papilloma with successive recurrences within intervals of a few months, were given levamisol in weekly doses of 300 mg over a year, and were followed up for various cellular immune reactions, as well as for serum globulin and for acute phase protein concentrations in the course of treatment. Levamisol was found to act primarily on cell-borne responsiveness. The recurrence-free intervals increased in the course of treatment. Four patients have remained free from recurrences since the start of treatment. PMID- 3835175 TI - Renal function, serum calcium and magnesium during treatment of advanced bladder carcinoma with cis-dichlorodiamineplatinum: impact of tumour site, patient age and magnesium suppletion. AB - In a group of ten patients, treated with cisplatin for advanced or metastatic urothelial cancer, renal function deteriorated in six. In a group of 28 patients, treated with cisplatin for tumours outside the urinary tract, renal function was impaired in 14 (50%). Renal function deterioration occurred more frequently in later life. Localization of the primary tumour in the urinary tract does not seem to predispose to renal function impairment. In contrast with reports in the literature, there was a significant decrease in serum calcium levels in spite of magnesium suppletion and normal serum magnesium levels. These calcium levels spontaneously returned to normal some months after the last treatment course with cisplatin. PMID- 3835176 TI - Relationship between haemodialysis anaemia and copper and zinc. AB - In fifteen chronic haemodialysis patients, serum and corpuscular copper and zinc concentrations were examined before and after dialysis. Serum copper levels were normal before dialysis and elevated after dialysis. However, corpuscular copper levels were low before dialysis and did not change after dialysis. Serum zinc concentrations before dialysis were low and significantly increased after dialysis. Corpuscular zinc levels before dialysis were high, but were unchanged after dialysis. There was a good correlation between serum zinc levels and red blood cell counts (RBC) and the value of haemoglobin (Hb), whereas we found no significant correlation between levels of serum or corpuscular copper and zinc, and of RBC, Hb, haematocrit or serum iron. PMID- 3835177 TI - Dialysis treatment in multiple myeloma. AB - The histories of three patients suffering from acute renal failure and multiple myeloma are reviewed. In two patients oliguric acute renal failure appeared following intravenous urography. Although renal failure was treated by dialysis, all the three patients died of pulmonary infection. It is concluded that prevention of renal failure is still more promising than its treatment. PMID- 3835179 TI - 13C NMR studies on cimetidine. PMID- 3835178 TI - Activity of circulating monocytes in patients with chronic glomerulonephritis. AB - Monocytes of 95 patients with chronic glomerulonephritis (ch.g.) tested in vitro demonstrated characteristics of activation in proliferative, and of functional suppression in mesangiocapillary glomerulopathy. Fc and C3 receptor function studied by rosette assay and metabolic potential measured by the NBT reduction test constituted result patterns. Receptor tests were supplemented with their counterparts after monocyte triggering with heat-inactivated sera and in case of NBT assay - stimulation with zymosan. Membranous, minimal change, mesangial and focal glomerulonephritis monocytes presented less specific configurations of data than those of proliferative and mesangiocapillary, with a uniform increase of trypsin-resistant Fc receptor activity. There was no appreciable correlation between the presence of circulating immune complexes (c.i.c.) in patient sera and parameters tested. The mesangiocapillary "suppression pattern" suggests mononuclear phagocyte defect in this glomerulopathy. PMID- 3835180 TI - Flame ionization detection--thin layer chromatography studies on antibiotics. Part: I--Beta-lactams and aminoglycoside. PMID- 3835181 TI - Nystatin controls Botryodiplodia rot of pears (Pyrus pyrifolia Burm f.). PMID- 3835182 TI - Seasonal incidence of Rhipicephalus sanguineus (Lat) (Acarina) on a wild host Hemiechinus auritus collaris (Gray) (Insectivora). PMID- 3835183 TI - Antibacterial activity of extracts of ginger and African oil bean seed. PMID- 3835184 TI - Humoral response to rabies vaccines in dogs. PMID- 3835185 TI - Feasibility of filter paper disc method for collection of blood for measles antibody testing. PMID- 3835186 TI - Recent dysentery and gastroenteritis outbreak in some areas of Hooghly Distt. (West Bengal). PMID- 3835187 TI - A seroepidemiological study of kala-azar in Nepal. A preliminary report. PMID- 3835188 TI - Intestinal parasitic infections in a section of population of Port Blair, Andaman and Nicobar islands. PMID- 3835189 TI - Prevalence of syphilis in South Sudan. PMID- 3835190 TI - Variability in the management of the febrile infant under 2 months of age. AB - The management in the emergency department of febrile infants less than 2 months of age is influenced by the standard of practice in the community. We sought to determine if uniform practices existed across the United States. Individual academically based faculty from 154 (61%) United States pediatric residency programs responding to a questionnaire on the emergency department management of febrile infants less than 2 months of age showed great variability. Twenty-nine respondents reported written policies and 103 reported informal but defined guidelines for the evaluation and management of infants seen at their institutions. There was little consensus among the respondents as to the definition of fever in this age group. Those at institutions with formal policies reported using more laboratory tests in the evaluation. Respondents differed on the number and types of tests used and on antibiotic administration. University affiliation, type of population served, or presence of advanced training programs in ambulatory pediatrics were not related to the type of policy. The care of the young febrile infant varies greatly. PMID- 3835191 TI - Coma as presenting manifestation of Wernicke's encephalopathy. AB - A patient in whom coma was the presenting manifestation of Wernicke's encephalopathy is reported. Clinical reports on coma in Wernicke's encephalopathy are scarce, but postmortem studies have demonstrated that this form of presentation is often not recognized. The diagnosis of Wernicke's encephalopathy should be suspected in any patient presenting with coma of unclear etiology. PMID- 3835192 TI - The next logical step in the emergency radiographic evaluation of cervical spine trauma: the five-view trauma series. AB - The five-view standard series is considered the golden standard in the radiographic evaluation of the cervical spine. Although the three-view trauma series has proved significantly more accurate than the cross-table lateral view in the emergency evaluation of patients with cervical spine trauma, this series does not deal with questionable findings. The introduction of a five-view trauma series, with the inclusion of supine oblique views, is the next logical step in the emergency evaluation of these patients. An algorithm for the emergency radiographic evaluation of patients with suspected cervical spine trauma is proposed. PMID- 3835193 TI - Rapid nighttime evacuation of a veterans hospital. AB - Loss of essential utilities and danger of explosion forced a rapid nighttime winter evacuation of 229 patients from an acute-care Veterans Administration hospital. Although distribution of patients to recipient hospitals was not optimal, and the location of several patients could not be documented for more than 24 hours, the evacuation in subfreezing weather went smoothly. Continuity of care and careful planning permitted an orderly return to the hospital five days later. Although financial costs were high, no excess mortality or morbidity was associated with the evacuation. No changes in pharyngeal gram-negative bacterial flora of the patients were noted. Further, a critique is presented to aid in planning for similar emergencies elsewhere. PMID- 3835194 TI - Distal greater saphenous vein cutdown--technique of choice for rapid volume resuscitation. AB - Rapid fluid administration is essential for the successful resuscitation of hemorrhagic shock. Distal greater saphenous vein cutdown provides quick venous access for rapid volume repletion. The advantages of this simple technique include the physical characteristics of the vessel and its location. In rare instances use of the distal greater saphenous vein may be contraindicated, but in the vast majority of cases it is the cutdown procedure of choice for fluid resuscitation in the critically injured. PMID- 3835195 TI - On the evaluation of the traumatized cervical spine. PMID- 3835196 TI - The varied faces of Wernicke's encephalopathy. PMID- 3835197 TI - The febrile infant: hard decisions or stubbornness? PMID- 3835198 TI - Satisfaction and commitment in homosexual and heterosexual relationships. AB - Rusbult's (1980, 1983) investment model was utilized to explore the determinants of satisfaction with and commitment to maintain romantic relationships among male and female homosexuals and male and female heterosexuals. The study employed a questionnaire designed to obtain both specific and global measures of rewards, costs, alternatives, and investments, and to obtain global measures of satisfaction and commitment. Women, both lesbians and heterosexuals, reported that they had invested more in their relationships and were more committed to maintaining their relationships than did men. Heterosexuals, male and female, reported greater costs and marginally greater investments in their relationships. In general, the investment model effectively predicted satisfaction and commitment for the sample as a whole and for all four groups of respondents. Greater satisfaction with relationships was associated with higher levels of rewards and lower levels of costs. Greater commitment was associated with greater satisfaction, greater investments, and poorer quality alternatives. Relationship costs were more strongly related to satisfaction and commitment for females than for males. Differences in the average level and the importance of a wide variety of specific predictors were also examined. In general, gender appeared to be a more important predictor of the behaviors explored in this study than was sexual preference. PMID- 3835199 TI - Gay and lesbian parents. AB - An anonymous survey of 23 gay and lesbian parents and 16 heterosexual single parents was conducted in order to see whether the parents' homosexuality created special problems or benefits or both, for their children. Both sets of parents reported relatively few serious problems and generally positive relationships with their children, with only a minority encouraging sex-typed toys, activities, and playmates. Heterosexual parents made a greater effort to provide an opposite sex role model for their children, but no other differences in their parenting behaviors were found. Gay and lesbian parents saw a number of benefits and relatively few problems for their children as a result of their homosexuality, with lesbians perceiving greater benefits than gay men. Conversely, the gay males reported greater satisfaction with their first child, fewer disagreements with their partners over discipline, and a greater tendency to encourage play with sex typed toys than did the lesbians. The findings suggest that being homosexual is clearly compatible with effective parenting and is not a major issue in parents' relationships with their children. PMID- 3835200 TI - Homosexual mutuality: variation on a theme by Erik Erikson. AB - The exploratory descriptive study described here was conducted in order to produce the initial empirical evidence to support reformulation of the theoretical construct of heterosexual mutuality (Erikson, 1975). Six persons were interviewed in depth on tape in order to locate them on one of four identity statuses constructed by Marcia (1964, 1966, 1973). The tool was modified and extended to meet the purposes of the study. The questions are directed toward illumination of conflictual moments in the life cycle when the ability to make appropriate decisions engenders character growth, and supports the personality integration of adulthood. An ability to make decisions results in personality integration. The small study provides evidence that there exists a homosexual mutuality (contrary to Erikson's position) which is no less valuable than heterosexual mutuality, and forms an equal basis for adult personality integration. PMID- 3835201 TI - A critical examination of stage theories of lesbian identity development. AB - A general stage theory of lesbian identity development was compiled on the basis of six theories of lesbian or gay identity development. The general theory and the six specific theories were then examined empirically, using repeated interviews with 14 women who were currently experiencing changes with respect to their sexual orientation. The data conformed to the general stage theory to a large degree, especially at early stages of development, but marked discrepancies were also found. Order and timing of events varied among these women, and for some lesbian identity did not represent a final stage of development. It was found that the process of lesbian identity development, or sexual orientation change in general, was very sensitive to the social/historical context. PMID- 3835202 TI - Role relationships: lesbian perspectives. AB - This questionnaire study of 140 lesbians, 70 couples who have lived together for one or more years, explores equality and role relationships. We predicted that lesbians would achieve partnerships characterized by equality and freedom from traditional butch-femme role playing. Financial sharing and decision-making were found to be characterized by high degrees of equality. Household responsibilities tended to be performed individually, but no role-playing was evident. Sexual intimacy items indicated less perceived equality than other areas. And overall, some partners were viewed as unequal. The variables of age, income, education, occupation, assets, and years living together did not explain the inequality observed. PMID- 3835203 TI - Importance of physical attractiveness and social assertiveness skills in male homosexual dating behavior and partner selection. AB - It was proposed that a homosexual male would most often expect to date, try to date, and like a partner of physical attractiveness greater than his own. One hundred homosexual men were matched in dyads based on objective physical attractiveness ratings made of their appearance by confederates and by their scores on a social assertiveness questionnaire. The subjects were matched in pairs so that all possible combinations of high and low physical attractiveness and social assertiveness were represented. Each pair of 50 dyads experienced an actual "computer date" through an "afternoon tea dance" arranged by the experimenter. Regardless of the subject's own physical attractiveness and social assertiveness level, the largest determinant of how much he liked his partner and how much he wished to date him again was the partner's physical attractiveness. Neither the physical attractiveness nor social assertiveness of a partner, however, influenced how often a subject subsequently asked the partner out. The results suggest that in such institutions as bars and discos, male homosexuals judge prospective partners on the partner's physical attractiveness. However, other variables besides attractiveness and assertiveness work to produce long term attraction and relationship formation. PMID- 3835205 TI - [Cardiography Society. Proceedings of the regional meetings. Abstracts]. PMID- 3835204 TI - Relationship quality of gay men in closed or open relationships. AB - This study compared gay men in monogamous ("closed") relationships (n = 98) and gay men in nonmonogamous ("open") relationships (n = 34). Partners in open relationships were living together significantly longer than partners in closed relationships. Partners in the two types of relationships did not differ in Psychological Adjustment. Controlling for length of time living together, partners in closed relationships reported higher Affiliation/Dependency, more Favorable Attitudes toward the Relationship, and lower Tension than partners in open relationships. Global relationship quality for both types of couples was related to many Attractions, many Barriers, and few Alternatives to the relationship; few beliefs regarding both Disagreement is Destructive and Partners Cannot Change; high Dyadic Attachment; high Shared Decision Making; and low Psychological Maladjustment. Partners in both types of relationships were more similar to each other than different from each other, especially on the variables of Relationship Quality, a belief in Partner Changeability, and Dyadic Attachment. PMID- 3835206 TI - A new approach in muscle training to rehabilitate the hand in leprosy. AB - Rehabilitation of the hand in Leprosy with its deformities and anaesthesia no doubt poses a formidable challenge as far as rehabilitation is concerned. Here we have applied a combination of latest concepts in sports physiology and the exercise followed by the students of ancient Indian martial art known as Krishni Vidya. This exercise consists of crumpling a newspaper sheet with a single hand without any external support. We are unable to explain the type of exercise done by the people before existence of newspaper. They might be using naturally occurring materials for the same like woodbark. With this exercise we have been able to improve the function of the hand remarkably well and the rehabilitation time following surgery is drastically reduced, with function returning close to normalcy. The full function is achieved within four weeks from the date of removal of plaster as compared to eight to ten weeks or more with conventional physical therapy. This full function is not only in mobility but also in co ordination, static and dynamic strength, speed of movement and flexibility required of a normal hand. 16 patients operated for lumbrical replacement (using sublimis as a motor from the long finger) at the Dr. Bandorawalla Leprosy Hospital were put under the paper crumpling exercise. It was observed that the average time for the achievement of fully close fist was two weeks. (All of them had thumb function intact, i.e. either normal or operated-out of sixteen, four patients were operated for opponens prior to lumbrical replacement). PMID- 3835207 TI - Chemical drug delivery systems: I. Preparation and evaluation of prodrugs of dapsone. AB - Several prodrugs of dapsone have been prepared and evaluated in vivo for the release of parent drug. The prodrug: 4,4'-dibutyrylaminodiphenyl sulfone gave blood levels above 0.5 micrograms/ml of DDS for about 34 days in rabbits injected intragluteally. The results have been compared with DDS and DADDS. PMID- 3835208 TI - Multidrug therapy for paucibacillary leprosy: experience in Bombay. PMID- 3835209 TI - Quantification of thermal sensory loss in follow up of progress in leprosy. AB - Thermal sensory perception quantitatively was studied in follow up of 10 lesions (4 TT, 3 BT and 1 Indeterminate case) of cases put on poly therapy as per WHO regime, for 6 months. Significant thermal sensory improvements was noticed in 4 lesions after 4 months of therapy. Within 2 months of therapy, 3 cases showed improved perception of heat sensation but 1 showed deterioration. Recovery of sensations did not correspond to other clinical parameters of improvement in all the cases. The utility of quantitative evaluation of thermal sensory perception in follow up of leprosy cases is discussed. PMID- 3835210 TI - Lymphocytic infiltration of skin of Jessner-Kanof masquerading as borderline leprosy. AB - A case of pseudolymphoma from India is being reported which had been masquerading for quite some time as a case of borderline leprosy. The patient has been having for the past 16 years, recurrent, occasionally pruritic, multiple, bilateral, erythematous papules and plaques, which on casual examination elsewhere had suggested leprosy. PMID- 3835211 TI - Olfaction in leprosy. AB - Olfactory test was carried out in 225 cases of Hansen's disease with 75 cases each of lepromatous leprosy (L.L.), borderline leprosy (B.L.) and tuberculoid leprosy (T). Impairment of olfaction was found in 94(41.7%) cases. It was seen in 69.33% cases of L.L., 33.33% cases of B.L. and 22.6% cases of T. Total anosmia was present in 5(6.61%) cases of L.L. only. Males were more affected than the females. Impairment of olfaction was related to the duration of the disease, severity of the nasal condition, and E.N.L. reaction. It was not related to the type of antileprosy drug used. PMID- 3835212 TI - Survey of the unexamined population in the villages included in a sample survey of the ELEP Dharmapuri Leprosy Project. AB - In a sample survey of the ELEP Dharmapuri Leprosy Control Project out of a population of 62984, 51205 was examined i.e. 81.3%. Subsequently out of the enumerated unexamined population of 11779, 5761 were examined and 67 cases were detected giving a prevalence of 11.62 which was less than the prevalence in the sample survey. With an examination of 90.45% of the population there was not much of an alteration in the gross and child prevalence rates as also the lepromatous rate. A sample survey with examination of 80% of the population gives a representative view of the leprosy situation in an area. PMID- 3835213 TI - Dermatoglyphics in leprosy (II Metric analysis of palms). AB - A group of 100 leprosy patients consisting of 50 lepromatous (BL/LL) and 50 tuberculoid (BT/TT) were investigated for metric analysis of the patterns present on their palms. Hundred normal persons were also selected from the families of patients to serve as controls. BT/TT patients and controls did not show any significant difference in their palmar patterns. On the other hand, significant differences were observed in the patterns between BL/LL patients and controls. PMID- 3835214 TI - Dermatoglyphics in leprosy. AB - In the present study, dermatolyphic parameters were analysed in the handprints of 25 LL/BL, 25 TT/BT and 25 healthy persons, by printer's ink method. Frequency of loops, were more on right hand and whorls were more on left hand in LL patients as compared to normal healthy controls. In TT the whorls were less frequent than in controls. The a-b ridge count in LL patient has shown insignificant difference from control while the same in TT was significantly decreased (P less than 0.05). Distance between distal wrist crease and axial triradius was significantly decreased in LL as compared to normal (P less than 0.05), whereas no such decrease was observed in TT patients. PMID- 3835215 TI - Medical care delivery through leprosy clinics--consumer's perception, experiences and suggestions. AB - Randomly selected 500 adult leprosy patients, registered for treatment with six Sectors of a Leprosy Control Unit in Chingleput District of Tamil Nadu (India) were interviewed to study their perception, and experiences with medical care being delivered to them through leprosy clinic(s), and their suggestions to improve the system. About 14% patients did not perceive their disease as leprosy. And 8% of the total patients were taking treatment outside their sector leprosy clinics. The services like physiotherapy, rehabilitation, health education etc. were known to only 3-8% patients, perhaps on account of their non-availability and or non-practice. On an average, a patient had to cover a distance of 2.1 +/- 2.5 KMs (one side) in 24 +/- 49 minutes to reach clinic spot, mostly by walk (83.2%), and spent 58.9 +/- 32.2 minutes at clinic, of which two third in waiting for service(s). Each patient had consulted 1.23 +/- 0.55 medical agencies for treatment of leprosy. The average man-day and wage losses to a patient, due to monthly clinic attendance, were estimated to be 0.48 +/- 0.49 days and Rs. 2.28 +/- 3.06, respectively. Only 10.6% of the 500 patients got admitted 1.55 +/- 0.89 times in leprosy hospital for a duration of 63 +/- 69.30 days and lost wages of Rs. 126.4 +/- 85.64 per month of stay in hospital. Availability and efficient delivery of comprehensive medical care through well organized and regularly conducted leprosy clinic, by considerate and sympathetic staff was much emphasised by patients. Various factors influencing medical care delivery and its utilization by patients, are discussed in this communication. PMID- 3835216 TI - A case report of bullous reaction in leprosy. PMID- 3835217 TI - Squamous cell carcinoma developing in trophic ulcer in leprosy--a case report. AB - Development of malignancy in the trophic ulcer in leprosy is not previously believed rare. In India, less than a dozen cases are reported uptil now. We present a case of squamous cell carcinoma in trophic ulcer in leprosy patient because of its paucity in literature. Aetiopathogenesis of malignancy is discussed briefly. PMID- 3835218 TI - Involvement of scalp in leprosy--a case report. PMID- 3835220 TI - A multiwire surface oxygen pressure electrode for measurement across zones of normal and damaged tissue. AB - The standard MDO multiwire surface oxygen electrode was redesigned to enable measurements across transition zones between normal and, e.g., ischemic tissues. The eight measuring points were arranged in an array 2.2 mm long. This array multiwire electrode (AME) has been tested and showed the same electrochemical properties as the standard MDO electrode. The resolving power was tested and an individual measuring point was affected by a change in surrounding pO2 if it occurred within a distance of 20 microns. In experiments in the pig heart subjected to local ischemia it was found that both ischemic and normal tissue oxygen pressure were registered simultaneously by the AME. PMID- 3835219 TI - Inoculation leprosy developing after tattooing--a case report. AB - A case of Inoculation Leprosy following tattooing in a soldier is being reported. Escape of infection in one tattoo and occurrence of disease in another when tattooing was done simultaneously, is of interest. Possible mechanism for such occurrence is discussed. PMID- 3835221 TI - Toward a unified monitoring system during anesthesia. AB - A conceptual framework is proposed for the selection of monitored parameters during anesthesia, and a new device for monitoring the parameters in a unified manner is briefly presented. A 'basic set' of 6 parameters is proposed to cover the needs of most routine anesthesia: Blood Pressure, ECG/Heart Rate, Temperature, FiO2, FetCO2, and, Cortical Activity (by EEG spectral analysis). Additional parameters are added in accordance with specified factors such as patient status and complexity of the surgical procedure. An initial version of a new monitor, 'Cerebro Trac', designed for neurosurgery and cardiovascular surgery, is briefly presented, along with planned future capabilities and directions for its use. PMID- 3835222 TI - Assessment of digital blood flow and palmar collateral circulation. Allen's test vs. photoplethysmography. AB - Collateral circulation of the hand and digits was evaluated in 20 healthy male volunteers using a modified Allen's test and photoelectric plethysmography. A borderline (7-14 sec) Allen's test was present in 12.5% and 2.5% required more than 15 seconds for thenar flush. Photoplethysmography was then used to compare the relative contributions of ulnar artery flow to total arterial flow into the hand. This ratio, (ulnar/total) was termed the flow index (FI). Average FI for the first digit (thumb) was 0.59, and for the second digit (index) was 0.64. The FI difference between the first digit and that of the third, fourth and fifth digits was statistically significant (p less than 0.01). The FI difference between the second digit and the third, fourth and fifth digits was also statistically significant (p less than 0.05). These results imply that Allen's test may be misleading, indicating adequate collateral circulation when in fact collateral blood flow to the digits may be poor or nonexistent. PMID- 3835223 TI - Evaluation of impedance technique for fluid-volume monitoring during hemodialysis. AB - Fluid-volume changes during hemodialysis were studied in 30 patients at four separate treatments in each patient. Readings of fluid-volume changes obtained by a fluid-balance monitor with non-invasive tetrapolar impedance technique were compared to changes in weight caused by the treatment. A correlation coefficient of r = 0.90 (p less than 0.001) was found. A survey of papers describing impedance measurements during hemodialysis or diuresis is also presented. PMID- 3835225 TI - Ergonomics: anaesthetists' use of auditory alarms in the operating room. PMID- 3835224 TI - Application of computers in renal units. A question of time? AB - The application of computers for day-to-day patient care in renal units is still in its infancy, but the renal unit seems to be well suited for automation, because a computer may carry out functions that are often done badly or inefficiently or not at all. A data base system allows better access to information about patients and may improve the organisation of a center. Kinetic modelling can help to optimize treatment schedules and regimens. Computer monitoring may improve the safety of dialysis, particularly home dialysis. The introduction of computers into the renal unit has been slow and hesitant. Responsible for this is the difficulty of defining exactly what data are necessary to treat renal patients. Economic benefit and improvement in patient care are also difficult to indicate. Lack of communication between computers and people still has its impact. However, those physicians and nurses who fully understand and master the area of nephrology and dialysis may appreciate the help of a computer. Finally, it can be concluded that interest for computers is more or less omnipresent. Realizing that the entire field of computer technology is continuously in motion, it can be speculated that the broad application of computers in renal units is just a question of time. PMID- 3835226 TI - Perspectives in ICU computing. AB - Computers have unrealized potential in investigation and clinical care. Computers in Critical Care and Pulmonary Medicine must serve as a catalyst to focus these efforts. The goal must be development of practical, cost effective systems to facilitate the collection, recording and interpretation of data relevant to the management of the ICU patient. The ultimate goal is to provide feedback control where appropriate. To reach this goal, data relevant to the elements of the gas exchange system - the heart, the lungs, and ventilatory pump - are essential and analysis systems are needed. Analysis must interpret the interaction between circulatory and lung function and between lung, chest wall and diaphragm mechanics and gas exchange. PMID- 3835227 TI - Transcutaneous PO2 monitoring during a Himalayan ascent. AB - Transcutaneous PO2 (PtcO2) measurements were taken daily on seven subjects during two nine day ascents of the Himalayas to an altitude of 4,579 meters. Five of the subjects lived in areas under 450 meters (Group I), while two subjects lived at an altitude of 3,100 meters (Group II). The PtcO2 values decreased with increasing altitude. The Group II subjects had PtcO2 values greater than the Group I subjects and the difference became greater with increasing altitude. The linear regression lines of PtcO2/pbO2 to Group I during ascent and decent were lower than the regression line for Group II (PbO2 is the barometric oxygen partial pressure). The regression line for Group I data during the second half of the trek approached the data for Group II. We conclude that acclimatization to high altitude is possibly associated with increasing peripheral tissue oxygenation as assessed by PtcO2 values. PMID- 3835228 TI - Secondary students' performance on Piagetian projective and Euclidean spatial tasks. AB - Four tasks involving Piaget's Euclidean and projective space were administered to a total of 99 students in Grades 8, 10, and 12: Task 1, Volumes of Revolution; Task 2, Geometric Sections; Task 3, Folding Patterns; and Task 4, Projection of Shadows. A scalogram analysis indicated that the tasks scaled in increasing order of difficulty in the following order: Task 1, Task 4, Task 2, and Task 3. These results did not support Piaget's position that projective and Euclidean concepts develop concurrently. Also, significant differences between task performance with regard to gender were found for Tasks 3 and 4. Significant differences between task performance and grade level for Tasks 1 and 4 were found. Standardized achievement test performance and task performance relationships were significant in 3 of the 16 analyses. PMID- 3835229 TI - Imitation in toddlers as a function of motor and verbal aspects of modeling. AB - This study investigated the effects of the motor and verbal aspects of modeling on imitation. The subjects were 2- and 3-year-old children (N = 96). The child's imitation responses were recorded during the play period that followed each modeled act. Each child observed the model in one of four modeling conditions. In Condition 1, the model "flew" a telephone while saying that he or she was flying an airplane. Imitation was recorded as motor if the child flew the telephone but was recorded as verbal and realistic if the child flew an airplane. In Condition 2, the model flew an airplane while saying that he or she was flying a telephone. Imitation was recorded as verbal if the child flew the telephone. In Condition 3, the model flew an airplane and said that he or she was flying an airplane. If the child flew an airplane, imitation was scored as motor, verbal, and realistic. In Condition 4, the model flew a telephone and said that he or she was flying a telephone. Imitation was scored as motor and verbal if the child flew the telephone but was scored as realistic if the child flew the airplane. In Condition 1, 2-year-olds displayed more motor imitation than 3-year-olds, and 3 year-olds displayed more verbal-reality imitation than 2-year-olds. Boys displayed more motor imitation than girls. There were no age or sex differences in Condition 2. In Condition 3, 2-year-olds imitated more than 3-year-olds, with 3-year-old girls imitating the least. In Condition 4, reality imitation was largely due to 2-year-old boys' imitation of masculine-type acts. PMID- 3835230 TI - Spectral complexity and infant attention. AB - In two experiments, infants selectively attended to auditory stimuli that presented an increasingly complex spectral structure. Using 2- and 4-month-olds as subjects, the first study demonstrated this selectivity in comparison to the rate of acoustic change. The second study demonstrated the increased attention of 4-month-olds in response to an increasingly complex structure. Results are discussed with respect to the neural activity produced by these stimuli along the auditory pathway, and an analogy to the literature on visual attention is drawn. PMID- 3835231 TI - Activity level and sex-stereotyped toy choice in toddler boys and girls. AB - In the first study, the motor activity level and vigor of play of 52 toddlers was assessed as they played with a set of sex-role stereotyped and neutral toys. Boys and girls showed the same level of activity, and both were significantly more active when playing with stereotypically masculine toys. In the second study, 27 toddlers were observed playing with toys defined as potentially eliciting high, medium, or low activity within the masculine, feminine, and neutral categories. Again, boys and girls did not differ in overall activity level. All children preferred toys that allowed moderate to high activity, but given this preference, they selected toys stereotyped for their own gender above those stereotyped for the other gender. PMID- 3835233 TI - The syntagmatic-paradigmatic shift and long-term memory activation. PMID- 3835232 TI - The performance of attention-deficit-disordered and normal children on conservation tasks. AB - The present study was designed to investigate whether a specific subgroup of learning-disabled children (attention-deficit-disordered, ADD) differed from their normal counterparts on Piagetian tasks of conservation. The subjects were 34 third-and fourth-grade children. Seventeen children had been diagnosed as ADD; the remaining half were designated as normal. The two groups were equivalent in chronological age, mental age, and intelligence. The results indicated significant differences between the two groups on tasks tapping conservation of substance and number. These results may support the theory of a lag in the development of conservation in children with specific learning disabilities (ADD). Implications of the present research for therapeutic and remedial programs that serve ADD children are also discussed. PMID- 3835234 TI - The relationship between juvenile delinquency and personality dimensions of family members. PMID- 3835235 TI - Renal functional status and patterns of catecholamine excretion. AB - Twenty-four hour urinary catecholamine measurements were obtained in seven normal individuals and 23 patients with essential hypertension or renal disease. As renal function decreased, large reductions in the excretion of free catecholamines and total dopamine were measured. Since urinary catecholamine measurements are used for diagnostic and physiologic studies, our data indicate a need to assess renal function for accurate interpretation of these measurements. Our results are also consistent with a renal origin for a major portion of the urinary dopamine content. PMID- 3835236 TI - Effect of blood pressure on the progression rate of renal impairment in chronic glomerulonephritis. AB - An effect of high blood pressure on the progression of renal functional deterioration was studied in 23 cases of chronic glomerulonephritis, which showed progressive renal functional impairments during the long-term follow-up period. The slope-of-regression line, which was obtained from the relation between reciprocal serum creatinine concentration (1/Cr) and observation time, was expressed as a progression rate and was evaluated on an association with blood pressure level. The progression rate was found to correlate significantly with the level of diastolic blood pressure (p less than 0.001). It is concluded that the elevation of blood pressure is one of the factors that contribute to the progression of renal functional impairment in chronic glomerulonephritis. PMID- 3835237 TI - Humoral factors in primary hypertension. AB - In 56 spontaneously hypertensive rats of the Muenster strain, either parabiosis or cross circulation was performed with normotensive Wistar Kyoto rats. Crossed circulation was made through the common carotid arteries and external jugular veins using a peristaltic pump. In parabiosis and in cross-circulation experiments, hypertension was transmitted from spontaneously hypertensive to normotensive rats. Nephrectomy or adrenalectomy in the spontaneously hypertensive rat before cross circulation abolished this effect. After volume depletion in the hypertensive animals, hypertension was not transmitted either. Furthermore, the effect of plasma fractions from essential hypertensives (n = 20) on blood pressure of normotensive rats was studied. Substances with molecular weights higher than 6000-8000 and lower than 500 were removed from 60-ml plasma by ultrafiltration and dialysis. After chromatography on a Bio-Gel P-4 or P-2 column, three to four fractions were formed according to the results of UV spectrophotometry and concentrated to 0.5 ml. One fraction from hypertensive plasma containing substances with molecular weights between 1000 and 2000 increased blood pressure in the rat by 16.3 +/- 8.2 mmHg within 10 minutes when injected intravenously. The respective fractions from normotensive rat plasma increased blood pressure by 3.6 +/- 2.1 mmHg (p less than 0.01). The results demonstrate a circulating hypertensive factor both in spontaneously hypertensive rats and in essential hypertensives, which may be crucial for the pathogenesis of essential hypertension. PMID- 3835238 TI - Treatment of intracavernous carotid aneurysms by temporo-sylvian bypass combined with endovascular occlusion. PMID- 3835239 TI - Value of stereoangiography for the diagnosis and treatment of cerebral angiomas. PMID- 3835240 TI - Soft cervical disc herniation. CT-surgery correlations. PMID- 3835241 TI - Experimental study of the action of chymopapain on intervertebral disc morphology. PMID- 3835242 TI - Strategy for NMR exploration of brain tumours. Usefulness of the multiple echo technique. PMID- 3835243 TI - Tuberculous meningitis. Contribution of computerized tomography to its diagnosis and prognosis. PMID- 3835244 TI - Diagnosis of mesenteric venous thrombosis with 99mTc-labeled erythrocytes: an experimental study in rats. PMID- 3835245 TI - Induction of chromosomes aberrations in human lymphocytes by low doses of x-rays and gamma rays. PMID- 3835246 TI - Preparation of 67Ga-DTPA-fibrinogen and its biodistribution in Balb/c mice. PMID- 3835248 TI - Technology assessment in biomedical research: magnetic resonance imaging as a case in point. PMID- 3835247 TI - Five years of quality control for steroid receptor assay in Italy. PMID- 3835249 TI - [Synthesis of 3-aromatic ring substituted 2-(4-chlorobenzoylamino)propionic acid derivatives and their antiulcer activities]. PMID- 3835250 TI - [Studies on the constituents of green juice from young barley leaves. Antiulcer activity of fractions from barley juice]. PMID- 3835251 TI - [Studies on the constituents of green juice from young barley leaves. Effect on dietarily induced hypercholesterolemia in rats]. PMID- 3835252 TI - [Quantitative method of 5-fluorouracil and its metabolites in biological samples using high performance liquid chromatography]. PMID- 3835254 TI - [Extra-weak chemiluminescence of drugs. III. Investigation of the effect of air and temperature on kampo extracted herbal drugs evaluated by extra-weak chemiluminescence]. PMID- 3835253 TI - [High performance liquid chromatography for determination of water-soluble vitamins in infusion fluids. II. Analysis of pyridoxal-5'-phosphate by pyridine-4 aldehyde]. PMID- 3835255 TI - [Effect of magnesium stearate in preparation of eudragit RS-microcapsules containing drugs]. PMID- 3835256 TI - [Application of high performance liquid chromatography with fluorescence detection to determination of ampicillin in plasma deproteinized by the phenol method]. PMID- 3835257 TI - Skin blood flow changes and tissue deformations produced by cylindrical indentors. AB - Since skin blood flow as a function of applied pressure depends on many factors, one may find different curves within each group of subjects, making separation of groups difficult. A dimensional analysis has been out which indicates that the percent decrease in skin blood flow associated with external loading is primarily a function of only three variables: the ratios of bone depth and bone diameter to indentor diameter, and percent compression of the tissue overlying the bone. The load itself is found to be unimportant. It is concluded that measurement of bone depth, bone diameter, and tissue deformation are more important than pressure measurements. Measurements of skin displacement and average indentor pressure for four male subjects indicate that tissue stiffness increases with age, regardless of disability, so that higher pressures are required to produce the same displacement in older subjects. PMID- 3835258 TI - Re: Qualitative and quantitative gait phase analysis by continuous monitoring of inter-ankle distance. PMID- 3835260 TI - The fallacy of qualitative performance tests. PMID- 3835259 TI - The fallacy of timed functional tests. PMID- 3835261 TI - Assessment of nutritional and metabolic status of paraplegics. AB - Nutritional and metabolic assessment using anthropometric, biochemical, immunological, and indirect calorimetric techniques was performed on 17 healthy paraplegic males with a mean age of 44.2 +/- 14.6 years and mean duration of injury of 17.8 +/- 12.3 years. Significant differences in energy expenditure were observed; only 29.4 percent were normometabolic [measured resting energy expenditure: (MREE) 90-110 percent of predicted resting energy expenditure (PREE)], 35.3 percent were hypermetabolic (MREE greater than 110 percent of PREE) and 35.3 percent were hypometabolic (MREE less than 90 percent of PREE). Obesity (weight greater than 110 percent ideal body weight) was maximum in hypometabolic patients (83.3 percent) due to the imbalance between caloric intake and energy expenditure (p less than 0.05). None of the patients had normal values for all four objective measurements of nutritional assessment (albumin, transferrin, total lymphocyte count, and cutaneous hypersensitivity). Mild malnutrition was evidenced in 47 percent of patients; 53 percent of patients demonstrated some index of moderate malnutrition. We conclude that nutritional therapy based on measurements of energy expenditure instead of predictive equations will benefit these patients. A larger long-term study is needed to determine the ideal predictive measurements of nutritional assessment with their optimal cutoff values applicable to the spinal cord-injured patient. PMID- 3835262 TI - Walking casts: effect on plantar foot pressures. AB - Pressure measurements were made at four sites on the right foot of six normal subjects while they walked in a standard shoe, conventional padded cast, total contact cast, and again in a shoe. No differences in mean relative pressure were found between the padded cast and the total-contact cast. Significant reductions in mean relative pressure were found between the standard shoe and walking casts at the first and third metatarsal head. This study supported the use of walking casts in the management of plantar ulcers. The effectiveness of the cast in reducing plantar pressure was not found to be dependent on the cast padding technique. PMID- 3835263 TI - Wheelchair tire rolling resistance and fatigue. AB - The hysteresis loss theory of rolling resistance is developed for solid rubber wheelchair tires. The analysis is used to correlate test data for a clay-filled natural rubber and a polyurethane tire material. A discussion of tire rolling work, hysteresis loss factor measurement, and rolling loss measurement is presented. An example calculation of rolling resistance for a polyurethane tire is given in detail. The subject of solid rubber tire design is developed on the basis of recommended fatigue life theory and practice. It is shown that polyurethane tires have a useful fatigue life due to a high shear modulus at useful values of hardness. This characteristic of polyurethane, if exploited, is predicted to lead to a tire with a lower rolling resistance than other wheelchair tires available. The effect of surface roughness on rolling resistance is briefly discussed and some experimental results are listed. The purpose of this paper is to give the rehabilitation engineer the means for wheelchair tire rolling resistance and fatigue life design and the methods to assess the tire characteristics when a tire design is modified or a new tire material is contemplated. Other important design factors, such as wear and chemical degradation, are not discussed, but references are suggested for information on these topics. As in most research and development projects, this study raises problems which need further work. For example, the fatigue properties of the rubber compounds employed in this application are not completely understood; this subject is planned for future investigation. PMID- 3835264 TI - Automatic transmission for electric wheelchairs. AB - A new infinitely variable automatic transmission called the RESATRAN that automatically changes its speed ratio in response to load torque being transmitted is presented. A prototype has been built and tested on a conventional three-wheeled electric motor propelled wheelchair. It is shown theoretically that more than 50 percent reduction in power during hill climbing may be expected when a transmission-equipped wheelchair is compared to a direct-drive vehicle operating at the same voltage. It is suggested that with such a transmission, wheelchairs can use much smaller motors and associated electronic controls, while at the same time gaining in efficiency that results in longer operating distances for the same battery charge. Design details of the transmission and test results are presented. These results show a substantial reduction in operating current and increased distance of operation over a test course. PMID- 3835265 TI - Text-scanning patterns of blind readers using Optacon and braille. AB - Tactual reading usually requires the coordinated use of the forearm/hand motor and tactile sensory systems. Therefore, in a series of studies of tactual reading behavior, we chose to record the text-scanning patterns of adult blind readers in an attempt to gain further insight into the nature of this process. Reading behavior for four modes of tactual reading was recorded (embossed braille one hand, embossed braille two-hands, Optacon/letterprint, and Optacon/Inkbraille) by detecting and recording the instantaneous position of light-emitting diodes unobtrusively attached to the finger(s) or the Optacon camera. In addition to the comparative evaluation of the four sets of reading patterns, the salient features of the Optacon/letterprint patterns were quantitatively analyzed in an attempt to characterize this particular mode of reading. The text-scanning patterns of Optacon readers have not been previously reported. In general the text-scanning behavior for all modes of tactual reading seems to be similar; the only remarkable difference appears to be in the reading rates. Regarding Optacon/letterprint performance, reading rate was found to be significantly and negatively correlated with line-changing time and the number of regressions. No significant correlation was evident between rate and regression magnitude. PMID- 3835266 TI - Measuring gait-related blind mobility performance. AB - The gait characteristics of blind travelers can provide information about their mobility skills. Previous attempts at measuring these characteristics have suffered because they either do not provide continuous monitoring or allow usage outside a laboratory setting. A new instrument has been developed to overcome these problems. The instrument allows continuous monitoring of interankle distance during walking. Records of interankle distance were analyzed to determine maximum interankle distance/step, step time, and cadence. With this system, gait parameters revealed differences between two groups of travelers (blind and blindfolded) and changes over a series of four trials on turns, straightaways, and over the whole route. This suggests the system is useful as an assessment device both for research and for rehabilitation training. PMID- 3835267 TI - Effectiveness of mattress overlays in reducing interface pressures during recumbency. AB - This study evaluates the pressure-reduction characteristics of seven mattress overlays. Thirty subjects were evaluated on each support surface to determine the interface pressures that are generated under the most common pressure sore sites. The results of this study indicate that there is great variability in the effectiveness of traditional mattress overlays. The most effective overlays are the Roho and Akros DFD mattresses; whereas 2-inch thick convoluted foam provides no significant protection for the trochanter when the subjects were lying on their sides (lateral position). PMID- 3835268 TI - Development and preliminary evaluation of the VA Seattle foot. PMID- 3835269 TI - A future prosthetic limb device. PMID- 3835270 TI - Relationships among motivational orientation, level of leisure activity, and life satisfaction in older men and women. AB - With telephone and mailed questionnaire data from 217 persons between the ages of 40 and 89 years and residing in a midwestern city, the effects of selected aspects of motivation on levels of leisure activity and life satisfaction were investigated. Differences between employed and retired persons and between men and women were examined. Analysis of covariance, with a measure of problem perception serving as a covariate, was used to analyze the data. Results indicated that three motivational orientations--challenge seeking, concern with recognition and reward, and family focus--were systematically related to life satisfaction in the sample. The study provides an explanation for some of the inconsistencies in the literature on activity theory and strongly suggests that blanket prescriptions for increases in leisure activity are not necessarily desirable for all retired persons. PMID- 3835271 TI - Perceptions of assertiveness by high- and low-assertive female college students. AB - The interpersonal effects of assertive and unassertive behavior on females who scored high and low in self-reported assertion were examined. Subjects from each of the two assertion categories individually interacted with a female confederate trained to act either assertively or unassertively in a structured manner. In analyzing the subjects' impressions of the confederate, no significant differences between high and low assertives on the dimensions of competence, task attraction, social attraction, likability, and desirability were found. Assertive responding appeared less salient to the observer assertee in more naturalistic conditions and its social impact seemed more attenuated when the assertive responding took on a relatively mild form that posed little or no direct social or personal risk to the receiver of the assertive behavior. PMID- 3835272 TI - Perceived somatotype and stereotypes of physique among Nigerian schoolchildren. AB - The influence of perceived somatotype on stereotypes of behavior associated with body build was investigated among 160 male and 140 female Nigerian children in secondary school. In both groups, the perception of subjects' own physiques and discrepancy between their perceived and preferred physiques significantly explained the variance in the character trait scores attributed to body types. In general, the subjects attributed positive character traits to their perceived somatotypes and undesirable traits to the physiques with which they were dissatisfied. Thus, the perception of somatotype and discrepancy between perceived and preferred physique could significantly differentiate the character traits attributed to body build among male and female children. PMID- 3835273 TI - The need for power and fear of assertiveness in English-speaking South African female graduates. AB - The present study demonstrated that Winter's (1973) power arousal procedure and scoring system for the need for power, which were developed in the United States, are valid for English-speaking South African female graduates. Subjects in whom the need for power had been aroused by a prerecorded inspirational speech (n = 20) had significantly higher n Power scores than matched nonaroused subjects (n = 20), T2(8, 31) = 56.17, p less than .01. Further, it was argued that the fear of assertiveness is a component of the need for power, and a scoring system for measuring this motive was suggested. Fear of assertiveness was shown to correlate significantly with various behavioral and dispositional measures of assertiveness, relating especially to a dependency pattern of behavior. PMID- 3835274 TI - Passive immunisation against hepatitis A. PMID- 3835275 TI - The effect of exposure to simulated ship fire-fighting spray systems on the transfer factor for the lung. PMID- 3835276 TI - Results of recent research on life-jackets. PMID- 3835277 TI - An assessment of forced expiratory volumes and flow rates in the detection of early ventilatory impairment in RN submariners. PMID- 3835278 TI - A study of in-patients aged 60 years and over treated in the Department of Plastic Surgery, Dundee Royal Infirmary, in 1983. PMID- 3835279 TI - Cayesh: exped Peru '85. PMID- 3835281 TI - Actin paracrystalline sheets formed at the surface of positively charged liposomes. AB - Paracrystalline aggregates of F-actin spontaneously assemble at the surface of positively charged liposomes. This single-layered paracrystalline array is made up of parallel and juxtaposed actin filaments aligned in register and showing the typical 36-nm periodicity which corresponds to the half-pitch of the double helix strand. This crystallization of pure actin results from a direct interaction between actin and positively charged lipids and does not occur with negative or neutral lipids. PMID- 3835280 TI - The sarcoplasmic reticulum of mouse heart: its divisions, configurations, and distribution. AB - The sarcoplasmic reticulum (SR) is a prominent, highly ramified component of mouse myocardial cells. The use of ferrocyanide-reduced osmium tetroxide (OsFeCN) as a postfixative solution facilitates appreciation of both its extent and three dimensional architecture. We have found that the individual volume fractions (Vv) of myofibrils, mitochondria, and SR are similar in cells of the right and left ventricular walls. Vv(total SR) is approximately 7%, a value considerably larger than previously reported. We attribute this disparity in large part to the recognition factor which comes into play with OsFeCN-treated tissue. Previous observations pertaining to the stereology of myocardial SR have likely substantially underestimated both volume fraction and surface density of this membrane system, since none to this point has utilized specific staining such as that conferred by the OsFeCN regimen. Our stereological measurements of different depths of the ventricular cell indicate that although considerable differences are found between SR configuration at peripheral and deep cell levels, no significant difference exists between the volume fractions of either the total SR or its individual constituents. Two different stereologic regimens gave close agreement on volume fractions of the various SR segments; the majority (approximately 92%) of the total SR is network SR, whereas the remainder is composed of the various categories of junctional SR (peripheral, apposed to the surface sarcolemma; interior, complexed with the transverse-axial tubular system; corbular, existing free of sarcolemmal contact). In the adult mouse, interior junctional SR greatly preponderates the other types of junctional SR; corbular SR is qualitively assessed to be a far more common component of atrial cells than of ventricular cardiomyocytes. PMID- 3835282 TI - Ultrastructure of reconstituted rat liver microsomal membranes and cytochrome b5- or P-450-containing proteoliposomes. AB - Thin sectioning and freeze-fracture electron microscopy have been used to show that it is possible to obtain topologically closed vesicles by means of reconstitution of rat liver microsomal membrane "ghosts." The reconstitution by 15 hr dialysis resulted in the formation of vesicles with intramembrane particles (IMP) while after 40 hr dialysis no IMP were observed in the membranes. The protein/lipid ratio and functional activity of NADPH- and NADH-linked enzyme systems were similar in both cases. Cytochrome P-450 (LM2) was incorporated into liposomes of different composition (protein: lipid ratio--1:200). IMP were observed only when the incorporation of cytochrome P-450 was performed in the presence of detergent Emulgen 913 as specific additive to the initial protein lipid-sodium cholate mixture or in the course of incubation of proteoliposomal suspensions at 37 degrees C. After the incorporation of cytochrome b5 into azolectin liposomes vesicular membranes contain IMP if the incorporated membrane protein: lipid ratio is at least 1:50. Pronase-induced splitting off of a 11 kDa heme-containing fragment of cytochrome b5 did not affect IMP content. The conditions of IMP formation in reconstituted membranes and in microsomal ghosts are discussed. PMID- 3835283 TI - Three-dimensional visualization of basal body structures and some cytoskeletal components in the apical zone of tracheal ciliated cells. AB - The ciliated cells of tracheal epithelium were mechanically fragmented to remove the cytoplasmic soluble contents, and the apical zone was examined to clarify the three-dimensional structures of basal body and cytoskeletal filaments using freeze-fracture-etch approaches. The basal body was connected to the apical plasma membrane by definite laminae, formerly called alar sheets. The distal one half of the basal foot was composed of several smooth-surfaced 12-nm fibrils. Intermediate filament networks extended to the lower half plane of the basal body, and enmeshed the basal body tightly by tiny 5- to 8-nm fibrils. Actin core bundles of microvilli also had tiny crosslinking fibrils. Some actin filaments were seen to run horizontally at the upper half plane of the basal body. Tracheal cilated cells also had circular actin filament bundles just inside the zonula adherens as many other epithelial cells. These cytoskeletal networks which enmeshed both basal bodies and core filaments of microvilli may function as a coordinator of ciliary beating. PMID- 3835285 TI - [Hypereosinophilic syndrome--its relationship to eosinophilic leukemia, report of a case and review of the literature]. PMID- 3835284 TI - Plasma membrane "rosettes" in carrot and sycamore suspension culture cells. AB - Suspension culture cells of carrot, Daucus carota L., and sycamore, Acer pseudoplatanus L., were freeze-fractured after ultrarapid freezing without fixation or cryoprotection in a propane-jet freezer. Infrequently, rosettes (ca. 24 nm diameter) of six (occasionally five) subunits (ca. 8 nm diameter) were observed in P-face views of the plasma membrane of both taxa. When present, rosette density was approximately 1/micron 2. Generally, rosettes were less frequently seen on plasma membranes exhibiting numerous vesicle fusion figures. Due to the high quality of the freezing, cellulose microfibril impressions were rarely seen on either PF or EF views of the plasma membrane, thus precluding correlations between microfibrils on the one hand and rosettes (and terminal globules) on the other. The presence of rosettes in suspension culture cells of these two species supports the putative role of rosettes in cellulose biosynthesis in higher plants. PMID- 3835286 TI - [Effect of MD-805, a synthetic thrombin inhibitor, on disseminated intravascular coagulation developing in hematological disorders]. PMID- 3835287 TI - [Clinical significance of plasma adenosine deaminase (ADA) activity in leukemia]. PMID- 3835289 TI - [Two cases of agranulocytosis during medication with cinepazide]. PMID- 3835288 TI - [A phase II trial of etoposide (VP-16) administered intravenously in the treatment of malignant lymphoma and acute leukemia]. PMID- 3835290 TI - [Malignant histiocytosis with intermittent pancytopenia]. PMID- 3835291 TI - [Severe hemophilia A in a phenotypically normal female with 45,X/46,Xr(X) mosaicism]. PMID- 3835292 TI - [Acute mixed leukemia--a report of three cases]. PMID- 3835293 TI - [A case of acquired hemoglobin H disease]. PMID- 3835294 TI - [Thrombotic thrombocytopenic purpura: report of a case recovering after splenectomy and plasma exchange]. PMID- 3835295 TI - [Effects of plasmapheresis on female blood donors]. PMID- 3835296 TI - [Plasma exchange in 2 cases of hemolytic anemia]. PMID- 3835297 TI - [Lymphocytapheresis therapy. 1. Chronic lymphocytic leukemia and hairy cell leukemia]. PMID- 3835298 TI - [Lymphocytapheresis therapy. 3. Systemic lupus erythematosus]. PMID- 3835300 TI - [Clinical medicine and artificial organs]. PMID- 3835299 TI - [Leukapheresis therapy. 4. Rheumatoid arthritis]. PMID- 3835301 TI - [Various assisted circulation methods and their application]. PMID- 3835302 TI - [Hemodynamics and cardiac index in patients with heart assist devices]. PMID- 3835303 TI - [Mechanical problems of the total replacement of artificial heart]. PMID- 3835304 TI - [Physio-biochemical analysis of animals with the total replacement of artificial heart--problems of application in man]. PMID- 3835305 TI - [The recent developments and problems of heart valve prosthesis]. PMID- 3835306 TI - [Prognosis of heart valve prosthesis]. PMID- 3835307 TI - [Development of a next generation pacemaker]. PMID- 3835308 TI - [Comparison of the single and dual chamber sensing pacing]. PMID- 3835310 TI - [Evaluation of the structure and function of oxygenators--laminated- and coil types]. PMID- 3835309 TI - [Evaluation of the structure and function of oxygenators--a bubble type]. PMID- 3835311 TI - [Characteristics and efficiency of marketing available oxygenators]. PMID- 3835312 TI - [Current development of oxygenators in Japan and overseas]. PMID- 3835313 TI - [The limitation in the use of artificial liver for the purpose of blood purification]. PMID- 3835314 TI - [Medico-engineering problems in the metabolic artificial liver]. PMID- 3835315 TI - [Current status and problems in the hybrid artificial liver]. PMID- 3835316 TI - [Use of a wearable artificial pancreas]. PMID- 3835317 TI - [Progress of the glucose-sensor technic--with special reference to subcutaneous type]. PMID- 3835319 TI - [Anticoagulant-free hemodialysis]. PMID- 3835318 TI - [Problems of the development of wearable and implantable artificial kidneys]. PMID- 3835320 TI - [Experimental and clinical studies of continuous arteriovenous hemofiltration]. PMID- 3835321 TI - [Current status of the development of anticoagulant materials]. PMID- 3835322 TI - Radiomodifying effect of camphor on the spermatogonia of mice. AB - Camphor has been reported to exhibit radiomodifying properties for bacteria and solid tumours of mice. Therefore its radiomodifying effect was evaluated in the testis which is a less vascularised and hypoxic tissue. Young adult strain 'A' male mice were taken up for these studies. Camphor was administered at the rate of 0.1 mg/g body weight intraperitoneally and whole body irradiation was done after 45 minutes under normal aerated conditions. Doses of 0.5, 1.0 and 2.0 Gy were delivered to different groups with the help of 60Co gamma cell. Testicular germ cell renewal system which seems to be a very good model system for the study of chemical radiomodifier was used for this assay. Resting primary spermatocytes (RPS) were counted at different time intervals and comparison was made among different treatment groups and controls. It was observed that RPS counts significantly declined in radiation + camphor treated groups in comparison to radiation alone or control groups. Radiomodifying effect of camphor was significantly evident during the recovery period, i.e., on day 8 after 0.5 Gy irradiation and day 6 onward after 1.0 Gy and 2.0 Gy. PMID- 3835323 TI - Release of hydrogen peroxide from polymorphonuclear leukocytes stimulated with lambda-carrageenan. AB - The production of hydrogen peroxide (H2O2) by polymorphonuclear leukocytes (PMNs) that are exposed to lambda-carrageenan (100 micrograms/ml) and 12-0 tetradecanoylphorbol-13-acetate (TPA, 100 ng/ml) was measured by a colorimetric method. After a lag period of 15 min the release of H2O2 by carrageenan stimulated PMNs increased until a plateau level was reached at 60 min. The amount of H2O2 released was dependent on the number of cells in well or the concentration of carrageenan, reaching a maximum production of H2O2 at 5 X 10(6) cells per 3-cm dish and 100 micrograms/ml of carrageenan, respectively. The maximum amount of released H2O2 from carrageenan-treated PMNs was approximately 11 n moles/hr/10(6) cells. In contrast, TPA-stimulated PMNs released H2O2 linearly for 60 min without a lag period and produced a maximum of 60 n moles/hr/10(6) cells. These results show that lambda-carrageenan stimulates an oxidative burst from in vitro PMNs and furthermore suggest that these carrageenan stimulated PMNs release sufficient H2O2 to induce DNA damage in mammalian cells. PMID- 3835324 TI - [Methodological consideration on physical models in circulation research]. PMID- 3835325 TI - [Mechanical properties and contraction model of cardiac muscle]. PMID- 3835326 TI - [Finite element analysis of stresses and strains in the heart]. PMID- 3835327 TI - [Energetics in cardiac contraction]. PMID- 3835328 TI - [Electrical activity of the cardiac muscle]. PMID- 3835329 TI - [Ventricular depolarization and repolarization processes and body surface potentials]. PMID- 3835330 TI - [On the problem of forward and reverse direction in conductivity in electrocardiography]. PMID- 3835331 TI - [On the form and function of optimal arterial branching]. PMID- 3835332 TI - [Mechanical model and deformation theory of the blood vessel wall]. PMID- 3835333 TI - [Turbulence in the aorta]. PMID- 3835334 TI - [Physicomathematical analysis of microcirculation--theoretical estimation of the optimum capillary number]. PMID- 3835335 TI - [Heat transfer model of the peripheral circulation]. PMID- 3835336 TI - [Identification of compartmental systems]. PMID- 3835337 TI - [Modelling of body fluid regulation]. PMID- 3835338 TI - [Urinary citrate excretion in renal stone disease--effects of the dietary source]. PMID- 3835339 TI - [Electron microscopic observation of the renal tubular damage after administration of cis-diamminedichloroplatinum (II)]. PMID- 3835341 TI - [Evaluation of nocturnal penile tumescence (NPT) in the differential diagnosis of impotence]. PMID- 3835340 TI - [Clinical application of extracorporeal shock wave lithotripter]. PMID- 3835342 TI - [Evaluation of an erectometer as a new diagnostic method for impotence]. PMID- 3835343 TI - [Studies of contralateral testicular function after testicular torsion]. PMID- 3835344 TI - [Investigation of the fiber type of the rabbits external urethral sphincter with the analysis of myosin light and heavy chains]. PMID- 3835345 TI - [Clinical study of reflux nephropathy. I. Outcome of renal function in VUR patients with proteinuria]. PMID- 3835346 TI - [Interstitial laser irradiation of bladder cancer using a laser micro rod]. PMID- 3835347 TI - [Analysis of urinary steroid metabolites in patients with adrenal tumor and congenital adrenal hyperplasia by capillary column gas chromatography]. PMID- 3835348 TI - [Perineal total prostatectomy for localized prostate cancer: follow-up study]. PMID- 3835349 TI - [Dynamics of upper urinary tract--the effect of gravity on ureteral peristalsis]. PMID- 3835350 TI - [Three cases of psychogenic urinary retention in female]. PMID- 3835351 TI - [Psychogenic urinary retention--pathogenesis, pathophysiology, diagnosis and treatment]. PMID- 3835352 TI - [Problems in the therapy of kidney neoplasms]. PMID- 3835353 TI - Intracavernous injections of vasoactive substances for the treatment of impotence. PMID- 3835354 TI - [Combined modality therapy of bladder neoplasms]. PMID- 3835355 TI - [Catecholamine metabolism of urologic diseases]. PMID- 3835356 TI - [Clinical study of nephrotic hematuria of unknown etiology]. PMID- 3835357 TI - [Urethral function at the time of urination]. PMID- 3835358 TI - [Chemotherapy of urologic neoplasms--experimental approach and clinical application]. PMID- 3835359 TI - [Clinical experiences of renal and upper ureter stones by extracorporeal shock wave lithotripsy (ESWL)]. PMID- 3835360 TI - [A clinical study of one stage hypospadias repair (Hodgson type III)]. PMID- 3835361 TI - [Results of treatment for testicular cancer]. PMID- 3835362 TI - [Clinical studies of interstitial cystitis. II. Studies on allergic aspects of interstitial cystitis. (1). Infiltration of mastocytes and the relationship with infiltration of eosinophil leukocytes and round cells]. PMID- 3835363 TI - [Studies on citrate metabolism in urolithiasis. 1. An enzymatic determination of urinary citrate with citrate lyase]. PMID- 3835364 TI - [Urodynamic study on pediatric vesicoureteral reflux by X-ray fluoroscopic cystometry]. PMID- 3835365 TI - [Comparison between the gross appearance of human bladder tumor and the surface features by scanning electron microscopy]. PMID- 3835366 TI - [Clinical study on the prognosis of bladder tumor]. PMID- 3835367 TI - [Study on the causative factor producing urinary calcium stones--urinary excretion of gamma-carboxyglutamic acid under various conditions]. PMID- 3835368 TI - Glycosaminoglycans and collagen in the skin of a patient with diabetic scleredema. PMID- 3835369 TI - A case of autoimmune neutropenia and thrombocytopenia--effect of high-dose intravenous immunoglobulin. PMID- 3835370 TI - [Value of echocardiographic substernal projections in the diagnosis of heart diseases. Personal experiences]. PMID- 3835371 TI - [Disorders of the physical properties of blood in patients with primary arterial hypertension]. PMID- 3835372 TI - [Hemodynamic changes in primary arterial hypertension and various rheological parameters of the blood]. PMID- 3835373 TI - [Aneurysm of the sinus of Valsalva. Pathogenesis]. PMID- 3835374 TI - [Echocardiographic anatomy of the heart in substernal projections]. PMID- 3835375 TI - [Tricuspid insufficiency associated with mitral and mitroaortic valve defects]. PMID- 3835376 TI - [Variability of electrocardiographic findings in the early repolarization syndrome]. PMID- 3835377 TI - [Atrial fibrillation in Wolff-Parkinson-White syndrome in the light of electrophysiologic studies. IV]. PMID- 3835378 TI - [Evaluation of the correlation between impedance rheography data, function tests and basic laboratory studies in patients with arteriosclerosis obliterans of the lower extremities]. PMID- 3835379 TI - [Evaluation of selected non-invasive parameters in the diagnosis of atrial septal defects. I. ECG]. PMID- 3835380 TI - [Evaluation of selected non-invasive parameters in the diagnosis of atrial septal defects. II. PCG]. PMID- 3835381 TI - [A case of a free-floating clot in the left atrium diagnosed by echocardiography]. PMID- 3835382 TI - [Role of vasopressin in the regulation of arterial blood pressure and in the pathogenesis of arterial hypertension]. PMID- 3835383 TI - [Electrophysiologic indicators of the human heart after intravenous administration of Craviten]. PMID- 3835384 TI - [Isolated infection-induced damage of the pulmonary valve. Echocardiographic diagnosis]. PMID- 3835385 TI - [Proceedings of the 14th Retinology Symposium. 26-27 May 1985, Szczecin. I]. PMID- 3835386 TI - [Thrombosis of the central retinal artery. Localization, causes and fatal outcome]. PMID- 3835387 TI - [Intraocular pressure in central and peripheral thrombosis of the central retinal vein]. PMID- 3835388 TI - [Hemorrhagic glaucoma in diseases of the posterior segment of the eye]. PMID- 3835389 TI - [Fluorescein angiography before and after treatment of retinoblastoma]. PMID- 3835390 TI - [Radon inhalation in the treatment of diabetic retinopathy. Preliminary report]. PMID- 3835391 TI - [Electroretinographic examinations supplemented by the electroretinographic dazzle test in chalcosis of the eye]. PMID- 3835392 TI - [Transport, metabolism and the role of vitamin A in the vision process. I. Transport of vitamin A to eye tissues]. PMID- 3835393 TI - [Transport, metabolism and the role of vitamin A in the vision process. II. Metabolism of vitamin A in the visual cycle]. PMID- 3835394 TI - Demographic correlation between occupation and maxillary sinuses cancer mortality in Japan. PMID- 3835395 TI - Effects of coenzyme Q10 on anoxia-induced changes in cultured adult rat cardiomyocytes. PMID- 3835396 TI - A case of holoprosencephaly with atypical CT findings and no facial anomaly. PMID- 3835397 TI - Measurement of intracranial pressure via the anterior fontanelle in infants with hydrocephalus--special observations on the operative indications and pathophysiology of infantile hydrocephalus. PMID- 3835398 TI - Haloperidol and biperiden plasma levels in a pregnant atypical psychotic woman and a neonate--a case report. PMID- 3835399 TI - Serum myoglobin in acute cerebrovascular diseases. PMID- 3835400 TI - Familial intracranial aneurysms. PMID- 3835401 TI - Development of fetal heart rate control in diabetic pregnancies determined by nonstress test. PMID- 3835402 TI - Electron microscopic observations of benign tumors in oral maxillo facial lesions. PMID- 3835403 TI - Religiosity and attitude toward institutional authority among adolescents. PMID- 3835404 TI - Norms regarding drinking behavior in the business environment. PMID- 3835405 TI - Women's workload and rejection of children. PMID- 3835406 TI - The use of incentives to increase blood donations. PMID- 3835407 TI - Lymphographic abnormalities in patients with Brugia malayi filariasis and "idiopathic tropical eosinophilia". AB - Peripheral lymphography was carried out in 17 patients with elephantiasis and microfilaremia (Brugia malayi) and the findings compared to ten patients with "idiopathic tropical eosinophilia." There were extensive changes in peripheral lymphatic and regional nodal architecture in each group suggesting that "occult filariasis" is the cause of idiopathic tropical eosinophilia. PMID- 3835408 TI - Lymphangiography in ferrets infected with Brugia malayi. PMID- 3835409 TI - Lymphscintigraphy in peripheral lymphedema using technetium-labelled human serum albumin: normal and abnormal patterns. AB - Lymphscintigraphy using Tc-99m human serum albumin (HSA) was examined in 23 patients with peripheral leg lymphedema. Each was injected intradermally with one mCi in the medial web space bilaterally. Images of the lower pelvis and both thighs were obtained within five minutes after injection using an extralarge field view camera GE 500A with low energy all purpose collimator interfaced with G.E. Star computer. These images were acquired in dynamic byte mode, 128 X 128 matrix size, every minute for 40 minutes. Delayed images for this region and of both legs were also taken at 90 minutes and time activity curves from comparable regions of interest over the inguinal area bilaterally were generated. Three patterns emerged: 1--normal lymph flow (12 patients) characterized by symmetrical or nearly symmetrical early appearance of lymphatics (medial bands) with visualization of inguinal and pelvic lymph nodes in both early and delayed images. Time activity curves showed step ladder rise, in "pulses" every three to four minutes. 2--enhanced lymph flow pattern (6 patients) was characterized by rapid movement of radiolabelled albumin through dilated lymphatics, occasionally with subcutaneous pooling, and both larger and more numerous inguinal and pelvic nodes on the lymphedematous side. 3--obstructed lymph flow (5 patients) was characterized by subcutaneous pooling, absent lymphatics, (medial bands) and flat, time activity curve on the lymphedematous side (only background activity) and absent inguinal and pelvic nodes. On delayed images, where lymphatic obstruction was incomplete there was delayed appearance of inguinal pelvic nodes which were fewer and smaller compared to the nonedematous side.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835410 TI - Arteriovenous shunts in peripheral lymphedema: hemodynamic features and isotopic visualization. AB - The hemodynamic characteristics of peripheral lymphedema were studied in 28 patients with uni- or bilateral leg swelling. Leg blood flow was measured by venous isotope dilution (a technique for nutritive--capillary blood flow) and arteriovenous shunts were visualized by perfusion scintigraphy using radiolabelled macroaggregated albumin. Arteriovenous communications were uniformly detected in lymphedema, with a calculated "shunt flow" of 200 to 600 ml/min. Other features in the lymphedematous leg included an elevated limb blood flow rate and narrowed arteriovenous oxygen difference. PMID- 3835411 TI - A tissue tonometer for use in the field. PMID- 3835412 TI - Effects of serum from rabbits of various ages on cell proliferation. AB - The report of Carrel and Ebeling (J. Exp. Med., 34 (1921) 599-623) generally gives the impression that both serum and blood plasma from old animals inhibit cell proliferation. For confirmation of this, we examined the effects of serum from rabbits of various ages on rabbit fetal skin fibroblasts (RSF cell) and human fetal lung fibroblasts (TIG-1 cell). Serum from young rabbits 8 months of age stimulated proliferation of RSF cells just as did fetal bovine serum, but that from old rabbits 5-7.8 years of age was found to significantly increase proliferation more than serum from the young. This was also the case when using TIG-1 cells. The lesser effect on cell proliferation by young serum apparently does not arise from growth-inhibitory factor(s) in the blood components. An examination showed young serum to possibly contain fewer growth-stimulatory factor(s) than old serum. On the basis of our data, we concluded that old rabbit serum stimulates, not inhibits, the proliferation of RSF and TIG-1 cells. PMID- 3835413 TI - Radiation-induced changes in late effects and in developmental capacities of exposed artemia cysts. AB - Artemia dry cysts from a Californian bisexual strain used in several space experiments were irradiated with 60Co gamma rays. The three cyst populations experimented could be differentiated according to their development and survival rates. The variations observed for both of these criteria were related to the age of the cysts and the selection technique. The study of radiosensitivity based on LD50 value showed that the highest radiosensitivity differences were related to the cyst selection technique and not to the age. Furthermore, the three cyst populations showed that radio-induced lethal effects were enhanced, or appeared with time, namely following the delay between irradiation and the cyst development study. The observation of late effects after irradiations or after space flights show the difficulties encountered in assessing radiative risks during long duration space flights. PMID- 3835414 TI - Iron induces oxidative stress and may alter the rate of aging in the housefly, Musca domestica. AB - Iron is known to play a catalytic role in the generation of oxygen free radicals in vitro. The present study was conducted in order to determine the in vivo effects of iron intake. Administration of 2 mM ferrous chloride to adult male houseflies in their drinking water significantly shortened their life span, increased the concentration of inorganic peroxides and chloroform-soluble fluorescent material, and stimulated the activity of catalase. Levels of superoxide dismutase activity, glutathione and oxygen utilization were unaffected. Overall, these results indicate that iron causes oxidative stress in vivo and may influence the rate of aging. PMID- 3835416 TI - The examination of skeletal remains. AB - In summary, unless the more sophisticated methods listed in the references are repeated and more success obtained with a series of bone samples of known date, no physico-chemical or morphological techniques have yet been devised that will determine date independently of environmental deterioration. The only exception is the radiocarbon estimation in bones of greater antiquity than those of medico legal interest. The best mentor in the examination of skeletal remains is experience. Unfortunately, the majority of samples brought to the medical examiner remain of unknown provenance, and this prevents the doctor from checking his expertise against the true facts of identity and dating. The main point to bear in mind is that the tendency toward overinterpretation and dogmatic opinion should be avoided where the available data do not merit such a degree of certainty. There is no advantage in offering unfounded opinions to the investigators, since this might merely mislead them and perhaps cause them to exclude a class of possible identities because the doctor has unwisely told them to look only within a certain bracket of date and identifiable factors. As in any branch of forensic medicine, it is dangerous to speculate where the facts cannot firmly support the opinion. PMID- 3835415 TI - Changes in oxygen-metabolizing enzymes and lipid peroxidation in human erythrocytes as a function of age of donor. AB - We have studied the activities of enzymes, which afford protection against superoxide radical anion and hydrogen peroxide and estimated the content of malondialdehyde. Superoxide dismutase activity decreased slightly with advanced age of donors. The activities of catalase and peroxidases were higher in the erythrocytes of the middle age group and the old age group than in the young individuals. Thiobarbituric acid-reactive product was also significantly elevated in the aged donors. These results support the hypothesis that observed differences in the activities of enzymes and the level of malondialdehyde may contribute to the changes associated with aging, produced by the free radical reactions. PMID- 3835417 TI - A skeleton only clad with skin: the medico-legal aspects of anorexia nervosa. PMID- 3835418 TI - The current status of actions for wrongful life and wrongful birth. PMID- 3835419 TI - Artificial insemination donor: a constitutional model. PMID- 3835420 TI - Psychosocial characteristics of homicide and suicide victims. PMID- 3835421 TI - Iatrogenic surgical liability. PMID- 3835422 TI - The limits of liability for psychiatric malpractice. PMID- 3835423 TI - A model for making medical consent forms more comprehensible. PMID- 3835424 TI - The sleeping giant awakens: the physician and the antitrust laws. PMID- 3835425 TI - Blood alcohol concentrations: factors affecting predictions. AB - As a result of extensive alcohol research conducted on both humans and animals, it is possible to predict a BAC, given pertinent data. In addition, it is possible to estimate from a given BAC the quantity of alcohol consumed. Caution must be used in these predictions, for certain factors will affect the final estimation. Absorption of alcohol is influenced by gastrointestinal contents and motility, and also the composition and quantity of the alcoholic beverage. The vascularity of tissues influences the distribution of alcohol, and their water content will determine the amount of alcohol present after equilibrium. Elimination of alcohol begins immediately after absorption. The elimination rate varies for individuals but falls between .015 percent to .020 percent per hour, with an average of .018 percent per hour. In addition to these factors, a BAC will depend on the subject's weight, percentage of alcohol in the beverage, and the rate of drinking. The principal effect of alcohol in the body is on the central nervous system. Its depressant effect consists of impairment to sensory, motor and learned functions. When combined with some other drugs, a more intoxicated state occurs. Although tolerance to alcohol at low blood concentrations is possible, the tolerance most noted is a learned tolerance among chronic drinkers. contamination of antemortem blood samples collected for alcohol analysis is minimal when swabbing with an ethanolic antiseptic is performed with routine clinical technique; sloppy swabbing has been shown to increase the BAC determination significantly. The alcoholic content of blood used for transfusion does not contribute significantly to the BAC of the recipient, since extensive dilution occurs; nor does the alcohol present in injectable medication contribute significantly. Although many factors may alter the concentration of alcohol present in autopsy specimens, postmortem synthesis of alcohol receives the most attention. The microorganisms that cause postmortem ethanol production can be inhibited by adding a preservative to the samples and storing them under refrigeration. Should putrefaction be present, it is recommended that, in addition to blood, several different specimens be collected and analyzed for the presence of alcohol. Antemortem blood samples containing ethanol, collected using sterile tubes and techniques, may be analyzed up to 14 days later with reasonable certainty that the ethanol level reflects that which was present at the time of collection. PMID- 3835426 TI - The effective use of a questioned document examiner in medical malpractice cases. AB - The successful use of questioned document examiners in medical malpractice cases requires: Knowing what a document examiner can do in examining medical records; Defining in advance the areas of the records to be examined and the specific purposes thereof; Choosing a properly qualified questioned document examiner; Agreeing with the examiner on the cost and scope of his examination and prospective testimony; Evaluating the examiner's laboratory report in light of the claims made in the case; Conducting a proper pretrial conference with the examiner, covering not only the examiner's prospective testimony but possible opposing testimony. PMID- 3835427 TI - The use of polygraph testing in civil litigation. PMID- 3835428 TI - Stress and ulceration: medico-legal aspects. AB - This paper outlines the possibility of acute, and perhaps, fatal, if not diagnosed, stress ulcers precipitated by trauma, surgery, or other potentiating events. It should once again be emphasized that prevention is the best treatment for the stress-induced ulcer, and that this prevention may occur at both a secondary level (defusion of emotive or physical precipitators) and a primary level (reduction of gastric acid and/or bleeding). PMID- 3835430 TI - [Glycosylation of hemoglobin and plasma proteins in petrochemical plant workers]. AB - The concentration of glycosylated hemoglobin and (plasma) proteins has been measured in 111 workers of 6 MZRiP departments in Plock and in 54 healthy people. In all subjects the mean concentrations of glycosylated hemoglobin and glycosylated plasma proteins have been in so called "wide range of normal values". Significant shifts of glycosylated Hb concentrations have been found in two departments--those of ethylenederivatives and distillation. The concentration of glycosylated plasma proteins has been elevated only in workers of the Catalytic Processes Department. PMID- 3835431 TI - [Basophil histamine and peripheral blood serotonin in metal and toxic gas poisoning]. AB - Thirty-six persons in non-occupational exposure to air polluted by sulphur and nitrogen oxides and metallic lead and cadmium dust have been examined. The levels of basophil histamine and whole blood serotonin have been determined. A decrease in the basophil histamine level observed in our studies may be indicative of allergic effects of industrial pollution in that region. Simultaneously, we observed changes in the ratios of biogenic amines responsible for immunological response, i.e. changes in the histamine-serotonin ratio. PMID- 3835429 TI - [Comparison of the levels of 6 metals in the blood of workers in the Belchatow Industrial District before and after activation of the electric power station]. AB - The concentration of six trace metals has been determined in the blood of 90 workers of the Belchatow Industrial District after the electric power station start-off. The results have been compared with those related to the time before the start-off. The trace elements have been determined using the flameless atomic absorption (Cd, Pb, Mn), flame atomic absorption (Zn), or colorimetric methods (Fe, Cu). In those examined after the electric power station start-off, as compared to the group examined prior to the start-off, the following observations have been made:--similar average concentrations of toxic metals--cadmium and lead -in blood,--similar average concentrations of copper in serum,--higher average concentrations of manganese and ferrum in serum,--lower concentrations of zinc in serum. The differences might be due to changes in living conditions or increased exposure to the metals. The investigations further contribute to the prospective evaluation of the effects of the Belchatow Industrial District upon the level of trace metals in the blood of the workers of that district. PMID- 3835432 TI - [Causes of disability related to occupational exposure to carbon disulfide]. AB - The health condition of 615 disabled persons--in result of occupational CS2 poisoning--has been checked. The diseases yielding grounds for qualification into one of disability groups have been established. In all the disabled people one of the nervous system diseases was diagnosed, which gave grounds for disability certification. Most frequently diagnosed was encephalopathy, less frequently- pseudoneurotic syndrome, polyneuropathy and psychoorganic syndrome. In 75% of disabled persons at least one of the circulatory system diseases was diagnosed, the intensity of which affected also the psycho-physical status of those examined. Among the circulation organ diseases, clinical syndromes of arteriosclerosis were diagnosed, such as heart ischaemia and vascular diseases of the brain. At present, occupational CS2 poisoning is diagnosed when irreversible changes in the nervous system are found, accompanied by advanced changes in the circulatory system, thus--when the workers' health condition calls for disability qualification. It seems advisable to establish such diagnostic criteria for CS2 poisoning that a worker unable to work in exposure to neurotoxic substances (preventive elimination) can get compensation for health detriment when he can still work at other workplaces so that there is no need for disability qualification. PMID- 3835433 TI - [Evaluation of occupational exposure to cadmium based on analysis of air in the work area. II. Cadmium oxide levels in the air of work areas during cadmium production in a non-ferrous metal foundry]. AB - By stationary measurements the levels of cadmium oxide aerosols concentrations in air at particular workplaces related to cadmium production at non-ferrous metals mill have been determined. High concentrations of that compound have been found at such technological operations as unloading of cadmium-bearing raw materials, batching of cadmium sponge in the induction furnace and casting of fused cadmium into moulds. With the personal dosimetry technique, concentrations of that compound in the workers' breathing zone have been determined. Those were within 0.16-1.84 mg/m3, so--above the TLV values. However, those concentrations do not necessarily reflect the occupational exposure magnitude, as the workers had respirators. PMID- 3835434 TI - [Internal contamination by tritium caused by radioluminescent paints]. AB - The internal contamination investigations covered 23 persons using radioluminescence paints containing tritium, assembling devices painted with those paints, and those having no contact with active paints but working next to the painting room. Determined were concentrations of tritium excreted with urine, air contamination at workplaces, contamination of workplace areas and hand skin. At the time covered by the investigations, the mean annual equivalent doses for those using tritium paints were reduced from 14-20 mSv to about 5 mSv. In those working next to the painting room they were reduced from 5.8-15 to 0.23 mSv. The exposure of those assembling the devices does not exceed 1 mSv. It was demonstrated that the main cause of the tritium exposure level was air contamination in working rooms. PMID- 3835435 TI - [Medical anthropology--a framework for its study]. PMID- 3835436 TI - [Enthesitis of the pisiform bone]. PMID- 3835437 TI - [Ren mobilis--pathologic mobility of the kidney as a factor in the onset of chronic recurrent urinary tract infections and chronic pyelonephritis]. PMID- 3835438 TI - [Association of ischemic heart disease with acquired defects]. PMID- 3835439 TI - [Electroclinical characteristics of the effect of redergine on penicillin-induced epilepsy]. PMID- 3835440 TI - [The extent of utilization of passive immunization in the prevention of tetanus]. PMID- 3835441 TI - [Nonpenetrating deceleration injuries of the thoracic aorta--3 case reports]. PMID- 3835442 TI - [Chronic discoid lupus erythematosus of the eyelids]. PMID- 3835443 TI - [Perinephric abscess]. PMID- 3835444 TI - [Primary cavitating lung cancer]. PMID- 3835445 TI - [Physiologic role of fatty acids and their relation to the type of nutrition and the onset of atherosclerosis]. PMID- 3835446 TI - [Comparison of depressive symptoms during childhood and in adults]. PMID- 3835447 TI - [Clinical experience in the treatment of gynecologic and obstetrical infections with cefotaxime]. PMID- 3835448 TI - [Are diabetic patients neurotic?]. PMID- 3835449 TI - Design considerations in screening for behavioral teratogens: results of the Collaborative Behavioral Teratology Study. Proceedings of a conference. September 3-6, 1985, Cincinnati, Ohio. PMID- 3835450 TI - Collaborative Behavioral Teratology Study: background and overview. AB - Organization of the Collaborative Behavioral Teratology Study began in 1978 because of concern about potential postnatal dysfunction following developmental chemical exposure. The study design was focused primarily on the evaluation of reliability of behavioral testing methods, the sensitivity of these methods to alterations produced by prenatal chemical exposure, and the effects of litter, sex of the animals and prior testing experience on behavioral responses. The test methods and chemicals used were selected from the literature available at that time using certain specific criteria. NCTR served as the pilot testing laboratory, and five additional laboratories participated in the study, using a standardized protocol, testing equipment and procedures. The results of the study are presented in other papers in this issue, and give ample evidence for consistency of the behavioral measures used within and between studies, and within and between laboratories. The issues of sensitivity, sex, litter and prior testing experience were addressed within the framework of this study design, but further systematic evaluation of chemicals and methods is encouraged, as exemplified by the invited papers in this issue. PMID- 3835451 TI - Collaborative Behavioral Teratology Study: preliminary research. AB - Prior to the beginning of the Collaborative Behavioral Teratology Study (CBTS), extensive preliminary experiments were conducted. Several experiments were conducted to permit the selection and verification of dosage levels of d amphetamine sulfate and methylmercuric chloride to be used in the CBTS. These studies included evaluations of any teratogenic effects produced by selected concentrations of the chemicals, the potential pathology produced in the dams and offspring, and the postnatal behavioral consequences of the prenatal exposures. This preliminary research allowed the determination of the most appropriate experimental design for the CBTS, verified the practicality of the schedule of work, assured that all necessary procedural details were specified, and provided a database for the determination of the most appropriate statistical techniques for the analyses of the data. This paper presents the details and results of the preliminary research performed prior to beginning the CBTS. PMID- 3835452 TI - Collaborative Behavioral Teratology Study: protocol design and testing procedures. AB - This paper presents background information on the methods used in the Collaborative Behavioral Teratology Study (CBTS), the rationale behind the experimental design, and the design and specific procedures used in the CBTS. Each of the following methods is discussed: negative geotaxis, olfactory discrimination, auditory startle habituation, one-hour activity in the figure-8 maze, visual discrimination learning, 23-hour activity in the figure-8 maze, and amphetamine-stimulated activity. The CBTS was designed to determine the intra- and interlaboratory reliability of these test methods and the detection sensitivity of each method, as well as to determine the importance of several major variables (early test experience, gender, litter). The important design features which permitted these evaluations are discussed. Each laboratory conducted two independent experiments: one using d-amphetamine sulfate as the test agent and one using methylmercuric chloride. Other than the use of different agents and dosing regimens in the two studies, all other characteristics of experimental design were identical. Each study was conducted in four replicates with 4 litters/each of 4 treatment groups/replicate. The replicate design was an important feature which permitted reliability of the tests to be addressed under conditions in which several other sources of variation in responding could be identified and accounted for in the model. Other methods by which optimal testing conditions were implemented in the participating laboratories included the "blind" testing of all subjects in specific orders which were counterbalanced for treatment group, time of day, and the apparatus in which the animals were placed.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835453 TI - Collaborative Behavioral Teratology Study: statistical approach. AB - The design of the Collaborative Behavioral Teratology Study included six laboratories and two test compounds, d-amphetamine sulfate and methylmercuric chloride. For each lab-compound combination, there were four doses, four replicates (reps), four litters within each dose-rep combination, and eight pups per litter (four males and four females). Two males and two females per litter had early experience testing, the other pups in each litter were naive until day 21 of age. A repeated measures analysis of variance was used to analyze the data. The three major questions addressed were reliability, sensitivity, and effects of early testing experience. The question of litter or pup being the appropriate experimental unit also is discussed. An explanation of interactions and an example of sample size calculations are included. PMID- 3835454 TI - Collaborative Behavioral Teratology Study: results. AB - Behavioral measures used in the Collaborative Behavioral Teratology Study (CBTS) were negative geotaxis (PNDs 7-10), olfactory discrimination (PNDs 9-11), auditory startle habituation (PNDs 18-19 and 57-58), 1-hr activity (PNDs 21, 60, 100 and 120), 23-hr activity (PND 100), activity following a pharmacological challenge (PND 120), and an operant, discrete trial visual discrimination task. Maternal and offspring body weights and the appearance of certain physical landmarks of development were also monitored. The design of the CBTS allowed evaluation of the reproducibility and detection sensitivity of these behavioral test methods, as well as the impact of early testing experience on later behavioral assessment, offspring sex differences in response levels and variability, and the contribution of litter-to-litter and animal-to-animal variation to behavioral measures in a standardized test protocol. The results obtained in this test system are discussed in relation to each of these factors and to the degree of overt toxicity obtained using prenatal treatment with 0, 0.5 or 2.0 mg/kg d-amphetamine sulfate, SC, on gestation days 12-15 (Study 1) or methylmercuric chloride, 0, 2.0 or 6.0 mg/kg by gavage, on gestation days 6-9 (Study 2). PMID- 3835455 TI - Comparison of the Collaborative Behavioral Teratology Study and Cincinnati Behavioral Teratology test batteries. AB - Comparison is made of the NCTR Collaborative Behavioral Teratology Study (CBTS) test battery with tests of the Cincinnati test battery using rat offspring derived from the same samples and sub-divided and evaluated in parallel. It was noted that in the two experiments, one using prenatal d-amphetamine and one prenatal methylmercury exposure, both test batteries were in general agreement, viz., d-amphetamine was largely negative with no major findings observed and methylmercury was positive with several major findings. The results obtained from the two test batteries differed, however, in the methylmercury experiments, undoubtedly as a reflection of the different tests used. Whereas the CBTS battery detected in each laboratory methylmercury-induced auditory startle facilitation, increased adult activity, and in all laboratories combined decreased correct responding and intertrial responding in operant conditioning, the Cincinnati battery found delayed righting and swimming ontogeny, decreased adolescent activity, and impaired complex water maze performance. It was noted that the CBTS battery emphasized startle and activity testing, while the Cincinnati battery emphasized reflex ontogeny. The CBTS battery convincingly demonstrated its detection sensitivity, intralaboratory and interlaboratory reliability, but since few positive control agents were evaluated relatively few data on criterion validity were obtained. The Cincinnati battery has relatively little data on its interlaboratory reliability, but a large amount of data on intralaboratory reliability, sensitivity, and through the use of many positive control agents in the past, considerable data establishing its criterion validity. All tests need all three characteristics, but validation is the most crucial task for future research on these and other test batteries.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835456 TI - Behavioral teratology as the study of early brain damage: considerations for the assessment of neonates. AB - Research in early traumatic brain damage indicates that, because of recovery-of function, the behavioral effects of teratogenic agents and experiences may be easier to detect in younger animals. This makes early assessment desirable in behavioral teratogenicity screens, but requires careful consideration of the unique capabilities of the neonate and the assessment of behaviors more sophisticated than relatively gross motor behaviors. Several behaviors are discussed as examples of tests appropriate to the early assessment of CNS integrity. These tests may prove valuable as powerful, cost-effective discriminators of teratogenicity. PMID- 3835457 TI - Issues of methodology and interpretation in clinical and animal behavioral teratology studies. AB - Selected methodological issues of appropriate control procedures and dose response relationships are discussed with respect to the issue of interpretation. Neuropsychiatric effects in infants and children following prenatal exposure to alcohol or the opioids are compared with effects reported in animals. PMID- 3835458 TI - United Kingdom: regulatory attitudes toward behavioural teratology testing. AB - In the UK, postnatal evaluation of offspring, extending beyond weight and survival data, is currently only required under the guidelines for testing human medicines. Such testing is carried out as part of fertility studies and, under some circumstances, as part of perinatal studies. In the 10 years of experience since the guideline was introduced, the majority of test data submitted have focused on physical, sensory and motor development of the offspring. More complex behavioural tests of cognitive function are generally only carried out for drugs with therapeutic actions on the central nervous system. Some of the reasons behind the present reluctance to introduce behavioural teratology testing for classes of chemicals other than drugs are discussed. PMID- 3835459 TI - Guidelines for developmental toxicity testing of chemicals in Japan. AB - With the definition of teratogenicity expanded in terms of the developmental stages when an agent acts and the types of developmental anomalies induced, the concept of developmental toxicity has been established. The examination of functional developmental disorders including behavior has become one of the most important items for the evaluation of developmental toxicity of chemicals, especially pharmaceutical drugs. The guidelines for developmental toxicity testing of drugs in Japan stress the need for examination of growth and development including behavior and fertility on the postweaning offspring. The outline of the Japanese guidelines is presented and it is emphasized that studies should be done as research and include self evaluation of the scientific truth of the experiment and extrapolation to humans. In addition, the activities of the Behavioral Teratology Meeting, a satellite meeting to the Japanese Teratology Society, are introduced and enquete surveys of the Japan Pharmaceutical Manufacturers Association and collaborative studies for the standardization of learning tests in Japan are briefly presented. PMID- 3835461 TI - Design and analysis issues in behavioral teratology testing. PMID- 3835460 TI - An industrial developmental toxicologist's view of behavioral teratology and possible guidelines. AB - Many events or studies, such as the Minimata episode, during the past three decades have shown that prenatal insults can have lasting effects on the postnatal functioning of the offspring. These have been duplicated in animal models, and animal studies have been extended to other compounds with the eventual goal of being able to establish the risk in humans of neurological damage a priori from prenatal exposures. However, behavioral tests are not standardized with many of them lacking sensitivity, and are so vulnerable to environmental factors, that little confidence can be placed in their ability to predict risk to the human at this time. More research is needed to develop better tests and an understanding of their significance to humans before they are useful in regulatory toxicology. PMID- 3835462 TI - Strategies for the selection of test methods. PMID- 3835463 TI - Dosing considerations in behavioral teratology testing. PMID- 3835464 TI - Application of behavioral teratology testing procedures. PMID- 3835465 TI - Interpretation of behavioral teratology data. PMID- 3835466 TI - Collaborative Behavioral Teratology Study: implications, current applications and future directions. AB - The general conclusions from the Collaborative Behavioral Teratology Study (CBTS) and the implications for research and testing in the field of behavioral teratology are discussed. The results of the CBTS indicate that behavioral teratology data are reproducible, if appropriate attention to study design and testing procedures is maintained. The statistical detection sensitivity of most of the test procedures was excellent, requiring no more than a 5-20% change from control values to detect an effect. Litter, gender and early testing experience may contribute significant variation and should be controlled in any testing situation. The application of behavioral teratology testing and the regulatory role of data for hazard assessment and risk estimation to the human population are discussed. Future research needs were identified from the CBTS workshop discussions. PMID- 3835467 TI - Dopaminergic mediation of long-term behavioral effects of in utero drug exposure. AB - The influence of external agents on the developing brain has led to the hypothesis that, during critical periods of rapid development, such agents may have long-lasting effects on brain function and behavior. The dopaminergic systems are particularly suitable for examining the hypothesis, since the neural tracts using dopamine have been widely studied; their influence on behavior is, to some extent, understood; the tracts begin development in mice and rats late in gestation; and there are a number of drugs known to have particular effects on these systems. Literature is reviewed that supports the hypothesis that drugs affecting dopamine metabolism, when administered during the early development of the dopaminergic tracts, produce persistent changes both in the metabolism of dopamine and in behavior mediated by neural systems which utilize dopamine as a transmitter. PMID- 3835468 TI - Age-specific behaviors as tools for examining teratogen-induced neural alterations. AB - One approach to evaluate the impact of chemical insults during development is to examine teratogen-induced alterations in age-specific behaviors that appear to be modulated by activity of specific neurotransmitter systems. A number of age specific behaviors appear to be useful candidates for neurobehavioral assessment batteries. During the first postnatal week, mouthing in numerous situations appears to be strongly related to serotonergic activity. Footshock- or pharmacologically-precipitated wall climbing behavior, which is seen specifically during the second postnatal week in rat pups, seems to be related to noradrenergic, and perhaps dopaminergic, activity. The rapid ontogenetic decline in wall climbing seen after the second postnatal week may be in part related to the maturation of a cholinergic inhibitory influence on this behavior pattern. The periadolescent period, an age associated in rats with a number of age specific alterations in behavior and psychopharmacological responsivity, appears to be associated with age-related alterations in dopaminergic activity. Examination of teratogen-induced alterations in age-specific behaviors such as these may provide useful early markers of the neural substrates potentially affected by early insults. PMID- 3835469 TI - Detection of prenatal effects on learning as a function of differential criteria. AB - The role of appropriate criteria for detecting prenatal effects on learning was evaluated in Crl:COBS CD (SD)BR rats using a two-choice spatial discrimination escape paradigm. Alcohol was the prenatal treatment, as it has been reported to produce learning deficits in rats. The offspring of dams which consumed either a lab chow diet or isocaloric liquid diets containing 0%, 17.5% or 35% ethanol derived calories during pregnancy were reared by surrogate control dams and tested for watermaze learning at 20 days postparturition. Learning performance and the required number of trials to the selected criterion were interrelated: (1) four or five consecutive errorless trials were too difficult, as high error rates occurred in all groups, including the control; (2) two consecutive errorless trials, or the number of trials before the first errorless trial, were too simple, as low error rates occurred in all groups, including the high dosage group; and (3) three consecutive errorless trials revealed significant dosage dependent learning decrements in the alcohol-exposed groups. The results indicate that selection of the appropriate criterion in learning paradigms is critical for valid testing of prenatal effects. PMID- 3835470 TI - Conceptual and procedural considerations for developmental assessment of learning and memory (dys)function following neurotoxicant exposure. AB - Symptoms of memory impairment are often reported following neurotoxicant exposure. Untoward effects on the developing organism, potentially reflected as later learning disabilities and memory problems, deserve critical evaluation. Animal models providing rigorous experimental control are extremely important in this context. The psychological literature offers a variety of tasks and procedures for use across many developmental ages. Most recent progress has demonstrated evidence of associative capacity in infrahumans as early as birth, and under specific conditions even prenatally. Common to all assessments of learning and memory capabilities, however, is the requisite that these processes be inferred from overt behavior. This requirement confers the responsibility of differentiating alterations of an associative nature from those of a nonassociative nature (e.g., motivation, attention, perception, sensory adaptation, fatigue, activity, and reactivity, etc.). When across age comparisons are also of interest, additional attention must be paid to potential differences in available sensory processes, response repertoire, and ecologically relevant contextual determinants (e.g., ambient temperature, presence of familiar odors or conspecifics), particularly with preweanling and neonatal animals. Specific guidelines are offered for the criteria and implementation of controls typically necessary to provide a convincing demonstration of an associative impairment. PMID- 3835471 TI - Behavioral effects of prenatal d-amphetamine in rats: a parallel trial to the Collaborative Behavioral Teratology Study. AB - Pregnant Sprague-Dawley rats treated with 0, 0.5 or 2.0 mg/kg of d-amphetamine sulphate on days 12-15 of gestation or left untreated as part of the NCTR Collaborative Behavioral Teratology Study were assigned to either the Collaborative Study or Cincinnati Test protocol after birth. Offspring assigned to the Cincinnati test system were evaluated for growth, mortality, incisor eruption, eye opening, vaginal patency, surface righting, negative geotaxis, pivoting, auditory startle, olfactory orientation, swimming ontogeny, figure-8 activity, and complex water maze (Biel) problem solving. Amphetamine at both doses caused fewer offspring to be born per litter and reduced the proportion of males born in the 0.5 mg/kg group. Amphetamine produced no reliable effects on offspring growth as reflected by weight or survival. The 0.5 mg/kg amphetamine group showed delayed eye opening, but the 2.0 mg/kg group did not. Amphetamine produced no significant effects on other physical landmarks of development or on measures of behavioral performance except swimming ontogeny. Early swimming direction scores were significantly lower in the amphetamine groups compared to controls, but the effect was isolated; no other aspect of swimming was affected. It was concluded that at the doses and exposure period used here, d-amphetamine appears to be at best weakly behaviorally teratogenic using the Cincinnati test system. This finding is in general agreement with the results obtained with the same treatment regiment in the NCTR Collaborative Study. Both test systems appear comparable at correctly identifying the low level of behavioral teratogenicity of moderate doses of prenatal d-amphetamine. PMID- 3835472 TI - Behavioral effects of prenatal methylmercury in rats: a parallel trial to the Collaborative Behavioral Teratology Study. AB - Pregnant Sprague-Dawley rats treated with 0, 2.0 or 6.0 mg/kg of methylmercury on days 6-9 of gestation or left untreated as part of the Collaborative Behavioral Teratology Study (CBTS) were assigned to either the CBTS or Cincinnati Test protocol after birth. Offspring assigned to the Cincinnati test system were evaluated for growth, mortality, incisor eruption, eye opening, vaginal patency, surface righting, negative geotaxis, pivoting, olfactory orientation, swimming ontogeny, figure-8 activity, and complex water maze (Biel) problem solving. Methylmercury lengthened gestation, reduced maternal weight, and increased offspring preweaning mortality at the higher dose. This dose also accelerated upper and lower incisor eruption and delayed vaginal patency development. The high dose produced a non-significant reduction in offspring weight from shortly after birth to 30 days of age, and a significant reduction in weight by 60 days of age. This dose caused a significant delay in surface righting development and swimming ontogeny, while the low dose accelerated negative geotaxis turning and swimming angle development. The high dose reduced postweaning figure-8 activity, increased Biel water maze time, errors, and proportion of trial failures (no escape within 6 min), although the effect on errors was not significant. It was concluded that at the doses and exposure period used here, methylmercury was confirmed to be a potent behavioral teratogen using the Cincinnati test system. This finding is in agreement with the results obtained with the same treatment regimen in the CBTS. Two tests from the Cincinnati test system, swimming ontogeny and Biel maze, provided evidence that they would significantly improve the detection power of the CBTS test battery. PMID- 3835473 TI - A test battery for screening behavioral teratogens in mice. AB - The assessment battery was developed for identifying teratogens in mice (CD-1, outbred strain) since many non-behavioral toxicologists prefer working with the mouse and because the mouse is less costly to house and feed. This approach emphasizes the importance of adult toxicity data in the selection of exposure levels for teratologic studies and for interpreting behavioral teratogenic effects. Potential teratogen exposure is both prenatal and postnatal with the goal of identifying the need for more costly and time consuming, cross-fostering and critical period designs. The test battery includes the assessment of multiple behavioral capabilities, including physical landmarks, reflex development, motor capability and passive avoidance learning. We have found the behavioral capabilities of the mouse to be similar to those of the rat in variability and range of response. Our methodology has emphasized drinking water exposure to chemicals since we were involved in the evaluation of drinking water contaminants, but the battery should be amenable to any route of exposure. PMID- 3835474 TI - Reflex modification as a test for sensory function. AB - Reflex modification is a versatile procedure for the assessment of sensory function because it can provide information about the responses of several sensory systems to both weak and intense stimuli. The procedure has two elements: The elicitation of some reflex, such as the acoustic startle reflex, and the modification of that reflex by preliminary stimuli. In these experiments we used reflex modification and reflex elicitation procedures to examine the normal development of auditory function in rats and to evaluate alterations in auditory function produced by physical and toxic insult. Adult rats exposed to octave bands of noise demonstrated frequency-specific deficits on a test of reflex modification, but not reflex elicitation. In the studies of developing rats, reflex elicitation appeared by postnatal day 12 and modification around day 14. Frequency-specific increases in both measures suggested that the phenomena were sensitive to auditory development and, not simply, motor development. Exposure to kanamycin on postnatal days 8 to 16 produced dose-related deficits in the ability to detect stimuli at 32 and 16 kHz, but not 4 and 0.8 kHz. These effects were observed in the absence of changes in reflex elicitation. The results demonstrate that reflex modification procedures provide more sensitive and specific information than that provided by the use of reflex elicitation alone. PMID- 3835475 TI - Effects of limited paternal exposure to xenobiotic agents on the development of progeny. AB - This report represents a series of investigations of the postnatal functional sequelae of paternal exposure to opioids and other xenobiotic agents. In separate studies, young adult male mice were exposed to (1) morphine; (2) levorphanol or its nonanalgesic isomer dextrorphan; or (3) 80% nitrous oxide/20% oxygen. Males (5-8/group) were injected twice daily for 5 1/2 or 8 1/2 days with opioids or saline, or received a single 4 hour inhalation exposure to nitrous oxide/oxygen or compressed air. At 6-8 1/2 days post-treatment, each male was housed with 3 drug-naive nulliparous females. With the exception of birth weights of litters, no alterations in reproductive indices were observed. Changes in reproductive endocrine parameters included marked attenuation of serum luteinizing hormone response to castration in both young adult (8 week) and older (18 week) F1 morphine offspring, when compared with saline-derived groups. The morphine progeny showed decrements in body weight and delayed onset of maturational indices through four generations of selective inbreeding. Similar developmental delays occurred in F1 offspring originating from paternal levorphanol, dextrorphan and nitrous oxide groups, when compared with their respective controls. Behavioral study of F1 offspring revealed alterations in: water maze performance and learning, if preceded by unavoidable footshock, in morphine offspring at 8 and 18 weeks; aberrant swim patterns in both levorphanol and dextrorphan progeny at 6 1/2 and 8 1/2 weeks. Nitrous oxide progeny showed a blunting of hypothermic response to pharmacologic challenge at 16 weeks, in comparison to compressed air controls.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835476 TI - Behavioral methods in reproductive and developmental toxicology. AB - A questionnaire was sent to 75 representatives of 71 pharmaceutical companies or toxicology contract laboratories to determine the extent of behavioral teratology (neurobehavioral development) testing currently conducted by the pharmaceutical industry. The form used was a modification of one used by Buelke-Sam and Kimmel. The present survey made inquiry about test methods employed, test species, animal age at testing. CNS functions believed to be measured, other toxicologic endpoints measured concomitantly, correlation of other observations with behavioral alterations, advantages and disadvantages of test methods used, influence of current regulatory requirements on the extent of testing, and utilization of positive controls. Forty-five responses (60%) were received and 26 of these (58%) indicated that some behavioral testing was being conducted. None of the respondents was performing the same combination of specific tests or classes of tests. As in 1978, testing facilities acknowledged a need for some kind of behavioral testing, but with flexibility as to specific methods. Of 13 specified classes of behavior, about half of the respondents were testing 6 classes or more of behavior and were evaluating all agents under development. The primary test subject was the weanling rat. Overall, there have been no major changes in the frequency of sampling from behavioral classes or use of specific tests of behavior since 1978. PMID- 3835477 TI - d-Amphetamine as a behavioral teratogen: effects depend on dose, sex, age and task. AB - Reports on the behavioral effects of prenatal exposure to d-amphetamine in rodents are inconsistent. Activity levels have been variously reported to increase, decrease, or show no change (as in the Collaborative Study) following such exposure. As a follow-up to the Collaborative Behavioral Teratology Study, 3 experiments have been conducted at the NCTR to examine the behavioral teratogenicity of this compound following SC dosing on days 12-15 of gestation. A higher dosage (3 mg/kg) was included and evaluations involved tasks used in the Collaborative Behavioral Teratology Study (startle, figure-8 activity) and other tasks not previously undertaken at the NCTR (short-term reactivity to novel open fields, intake of sweetened solutions). Activity measures gave especially mixed results. There was no effect of prenatal exposure, even at 3 mg/kg, upon longer term activity, before or after amphetamine challenge, in figure-8 mazes or rectangular photocell chambers, at postnatal days (PND) 47 or 120. In one experiment, changes in reactivity to brief exposure to an open field daily over 3 days were seen in higher dosage PND 135 males but not females, while higher dosage females but not males showed lowered emergence latencies at this age. In a second experiment, no exposure-related changes were seen in reactivity to an open field in offspring of either sex at PND 47 or 70. Auditory startle amplitude showed complex dose effects in these two experiments. Females exposed to 3 mg/kg had elevated startle amplitude at PNDs 47 and 120, but not at PND 19. Males in the 3 mg/kg group had elevated startle at PND 19, but not thereafter.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835478 TI - A study of startle and locomotor activity in rats exposed prenatally to methylmercury. AB - The permanence of developmental abnormalities from prenatal methylmercuric chloride (MMC) was examined in the offspring of Sprague-Dawley rats exposed on Days 6-15 of gestation to 0.00, 0.25, 1.25, 2.50, or 5.0 mg/kg MMC. The effects of MMC on reproduction and early physical development were examined together with tests of negative geotaxis, righting, pivoting, swimming, locomotor activity in an open field, and startle responses to either tactile or acoustic stimuli. No live offspring were produced by females treated with 5.0 mg/kg MMC. Offspring from the 2.50 mg/kg dose group displayed impaired performance on almost all pre weaning measures and continuing abnormalities on longitudinal tests of locomotor activity in an open field and startle response performance. PMID- 3835479 TI - Behavioral and biochemical alterations following in utero exposure to methylmercury. AB - Behavioral changes induced in utero by methylmercury (MeHg) were studied with a non-invasive measure of patterns of effects in 1 to 35 day old rats. Lipid peroxidation (LP) and acetylcholinesterase (AChe) activity were used to compare effects in four different brain regions. MeHg (0, 2 or 6 mg/kg) was administered (PO) at day 6, 7, 8 and 9 of gestation. Rats were videotaped on day 10, 12, 20 and 34 and sacrificed on day 1, 13, 21 and 35. No changes in body or brain weights or other ancillary measures of growth and development occurred between 1 35 days. Cellular injury in brain regions as measured by LP was not altered by MeHg. AChe activity decreased in the anterior cortex and cerebellum on PN12. Frequency, dispersion and interactions of behavioral elements were determined. Frequency of grooming mode elements was decreased at 10, 12 and 34 days for 6 mg/kg, and at 12 and 34 days for 2 mg/kg pups. The frequency of exploratory mode elements increased at days 10 and 12 for 6 mg/kg, days 12 and 20 for 2 mg/kg pups. MeHg increased activities in the attention mode on PN12 at both doses. Behavior patterns were altered on all days observed, but these were not dose related. PN12 was observed to be the beginning of patterning (56 possible interactions). The 6 mg/kg group demonstrated a delay of pattern development at PN12 with a recovery to an altered array of behaviors at PN20. MeHg generally decreased interaction values (Chi2).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835480 TI - Effects of the high methylmercury dose used in the collaborative behavioral teratology study on brain anatomy. AB - Pregnant rats were injected with 0, 6 or 10 mg/kg of methylmercuric chloride on Days 6-9 of gestation. Dams given the 10 mg/kg dose failed to deliver young or produced stillborn. External morphology was normal for rats given either the 0 or 6 mg/kg dose. Whole brains were examined from male and female rats, 21 or 90 days old. External brain dimensions were measured with calipers. Brains were sectioned at three criterion locations. A microprojector was used to project brain sections in order to measure intrastructural distances. Sections were examined with a light microscope to look for abnormalities. Various expected age-related changes were noted showing the sensitivity of the anatomical methods. Methylmercury produced hydrocephalus, decreased thickness of cerebral cortex in the parietal section and increased thickness of hippocampus in the occipital section. With these exceptions, the brains of mercury-treated rats showed normal development. PMID- 3835481 TI - Comparison of behavioral teratogenic effects of ethanol and n-propanol administered by inhalation to rats. AB - Despite extensive testing of ethanol, there has been little research on the reproductive effects of other alcohols. We investigated the behavioral teratogenicity of inhalation exposures to ethanol and n-propanol. Groups of 18 male (approximately 450 g) and 15 pregnant female Sprague-Dawley rats were exposed 7 hours/day for six weeks or throughout gestation, respectively, to 16 000, 10 000, or 0 ppm ethanol or to 7 000, 35 000, or 0 ppm n-propanol. Pregnant females exposed to 7 000 ppm n-propanol, but not to ethanol, showed reduced weight gain, and female offspring also had reduced weight gain through three weeks of age; there was also slight teratogenicity observed at this concentration. Exposed males were mated with unexposed females; fertility was reduced in males exposed to 7 000 ppm n-propanol (two viable litters from 17 matings), but there were no differences from controls in maternal weight gain, feed intake, or water consumption in any other groups. In both maternally- and paternally-exposed groups, litters were culled to four pups of each sex and fostered to untreated females. One female and one male pup per litter were administered tests of neuromotor coordination (ascent on wire mesh screen, rotorod), activity levels (open field, running wheel), or learning ability (avoidance, operant conditioning), but no significant differences from controls were found with either alcohol, despite the reduction in maternal and female offspring body weight and minimal teratogenicity with 7 000 ppm n-propanol. Calculations for predicting blood ethanol levels with inhalation exposure are also presented. PMID- 3835482 TI - Postnatal effects of maternal exposure to nitrogen dioxide. AB - Pregnant albino rats were exposed to nitrogen dioxide in concentrations of 0.05, 0.10, 1 and 10 mg/m3 for 6 hr each day throughout gestation. Postnatal viability, growth, physical maturation, neuromotor development, and biochemical parameters indicative of NO2 oxidizing effects were studied in progeny up to the age of 3 months. It was found that although viability and physical development were little affected (only at 10 mg/m3), dose-dependent neurobehavioral deviations (such as disturbances in early neuromotor development, coordination deficits, retarded development of locomotion, reduced activity and reactivity) were induced by the lower exposures. The reduction in motor activity was found to persist into the postweaning period. PMID- 3835483 TI - The classification of headache. AB - The definition of headache syndromes in the past have lacked precision, not only because different terms have been used for the same condition, but also because there is no general agreement on the essential characteristics of each. Since even minor variations will produce marked differences in case series purporting to be of the same disorder, it is important to get general agreement and to improve on previous classifications of headache. PMID- 3835484 TI - A Markov model of the natural history of multiple sclerosis. AB - Prior research into multiple sclerosis prognosis has produced conflicting results. This paper presents an original approach in which the disease course is described by the movements of patients through well-defined disease states. A Markov model is proposed to describe these movements and to evaluate the effect of prognostic factors on transitions from state to state. The feasibility and applicability of this model is determined using data on the course of disease in 278 diagnosed patients from Lyon. Patients with older age at onset, females, and those with monosymptomatic onset are found to be at a higher risk of transition to a worse disease state. PMID- 3835485 TI - [Family and economic situations and social needs of patients with multiple sclerosis among the population of Lodz]. AB - The reported analysis covered patients aged 46 or less living in a large industrial city, not inmates of homes for the disabled, who had a history of at least 5 years of multiple sclerosis and who had been registered 5-6 years earlier during 1 year (from Oct 1 1973 to Sept 30 1974) in neurological outpatient clinics or neurological or neurosurgical inpatient institutions. About 1/5 of the patients required full nursing care or considerable nursing in the basic everyday activities, and another 2/5 patients regarded themselves as at least slightly dependent on the help of other persons in several basic activities. An overwhelming majority of patients were living with their families and received help only from their family members. At least 30% of these patients required help and interventions of civic workers in view of economic and living difficulties. A particularly troublesome shortcoming (and one which could be helped most easily) was lack of telephones in about 4/5 of cases. Most patients (83%) received disability pensions, and half of them (52%) had received it for at least 2 years. Among women there were more patients receiving this pension than among men, and the proportion of women taking this pension since 8 years or longer was also higher (F-54%, M-45%). These results confirm the current observation that the social needs of patients with multiple sclerosis are far from being adequately met, and they may serve as a basis for elaboration of programme of comprehensive care of this group of patients. PMID- 3835486 TI - [Evaluation of the secretory activity of the adrenal cortex and gonads in women with epilepsy. I. Urinary excretion of metabolites of adrenal cortex hormones in women with epilepsy during the 2 days preceding menstrual bleeding]. AB - In 32 women with seizures occurring mainly in the premenstrual phase and during bleeding, (group A) and in 31 women with epilepsy without this relationship of the seizures to the menstrual cycle (group B) the metabolites of adrenocortical hormones (17-ketosteroids and 17-hydroxycorticosteroids) were determined in 24 hour urine. The investigations were done during 2 days preceding menstrual bleeding, in most cases during three menstrual cycles. A significant reduction of the excretion of 17-ketosteroids and total 17-hydroxycorticosteroids was found in both groups as compared to the accepted normal value (p less than 0.01). However, no significant difference was observed in the excretion of these hormones between these groups of patients, although in group A he values of 17-ketosteroids were lower than in group B. On the basis of these results it is suggested that deficiency of androgenic hormones may contribute to the occurrence of seizures on the days before the onset of menstrual bleeding, and the effect of anticonvulsant treatment on the decreased excretion of these hormones is discussed. PMID- 3835487 TI - [Evaluation of the secretory activity of the adrenal cortex and gonads in women with epilepsy. II. Urinary excretion of estrogen fractions and alpha and beta pregnanediol during the 2 days preceding menstrual bleeding]. AB - In 32 women with epileptic seizures related in time to the premenstrual phase (group A) and 31 women with seizures unrelated to this phase (group B) oestrone oestradiol and oestriol and progesterone metabolites (alpha and beta pregnanediol) were determined in 24-hour urine. The investigations were carried out during 2 days preceding the onset of menstrual bleeding usually during three successive cycles. A significant reduction was observed in the amounts of all three oestrogen fractions in relation to normal values on both days (without any significant difference between the groups). Women with epilepsy excreted 56-60% less oestrogens than healthy women. Similarly the levels of alpha and beta pregnanediol were significantly below the accepted normal range. The obtained results are insufficient for accepting the role of oestrogens in the development of lowered convulsive threshold on the days preceding menstrual bleeding. On the other hand, it may be concluded that progesterone deficiency may have an effect on the appearance of greater readiness to seizures before menstruation in epileptic women. PMID- 3835488 TI - [Treatment of Horton's headache with testosterone]. AB - The studied material comprised 15 men with 12 of them having the episodic from of Horton's headaches and 3 with chronic form. In the episodic form the age of the patients was from 32 to 48 years, mean age 38. The history of the disease was from 6 to 12 years, the duration of a spell of headaches was 2-3 months and the patients had then 2-5 attacks of pain daily. Before the onset of treatment the patients were not given for 1 week any drugs or placebo. After determination of the index of attacks treatment was begun. For 7-10 days the patients received daily intramuscular testosterone propionate 25 mg, and then 10 mg for a similar time period. Before the treatment the index of attacks was 3.66 (with the total number of attacks 308). In the first week of treatment it decreased to 1.11 (94 attacks), in the second week it was 0.16 and in the third week 0.05. In 10 patients the attacks disappeared completely (83%), in the remaining 2 ones they regressed in a later time. Three patients with the chronic form received this treatment without effect. PMID- 3835489 TI - [Aneurysms of the pericallosal artery and its branches]. AB - A group of 33 patients with 34 aneurysms of the pericallosal artery and its branches are reported. They were treated in the Department of Neurosurgery, Medical Academy in Warsaw in the years 1965-1981. In 4 patients coexistence of other cerebral vascular anomalies (aneurysms of other location and/or angiomas) was demonstrated. The group comprised 21 men and 12 women aged from 7 to 60 years. Nine patients were not operated on, 8 of them died due to haemorrhagic brain damage and one gave no consent to operation. Out of surgically treated 24 patients in 3 cases the common carotid artery was ligated in 4 cases the wall of the aneurysm was reinforced with plastic mass, and in 17 cases the neck of the aneurysm was closed with a clip. In the clinical group I (Botterell's scale) 7 patients were treated surgically, in group II - 5, in group III - 9 and in group IV - 3. The immediate operative mortality was 8.5% (2 patients). One patient died 2 months after the operation from other disease. Deterioration of the neurological status occurred in 33% of cases (8 patients). Late result of the treatment was known in 16 cases with a mean follow-up of 4 years. Six patients returned to work, five resumed work with restrictions, and five other could not work and required care. The results of surgical treatment depended, in the first place, on the clinical state of the patient and the surgical risk was not greater than in cases of aneurysms of other location. PMID- 3835490 TI - [Post-traumatic disorders of cerebrovascular circulation]. PMID- 3835491 TI - [Myoclonic cerebellar dyssynergia (Ramsay Hunt). Description of 2 cases]. AB - The authors report two cases of dyssynergia cerebellaris myoclonica in siblings. Apart from typical clinical manifestations attention is called to the results of computerized tomography of the brain which demonstrated cerebellar atrophy. This helped in verification of the diagnosis. Comparing these cases with other ones described earlier in the literature the authors conclude that dyssynergia cerebellaris myoclonica is not a separate nosological entity but a syndrome associated with myoclonia. PMID- 3835492 TI - [Distal myopathy]. AB - A family with distal myopathy with early onset of the disease and autosomal dominant inheritance is reported. In EMG examination and in the histological examination of muscle features of nervous system involvement were found besides primarily muscular lesions. The character of the pathological changes in the muscles is discussed. PMID- 3835494 TI - Platelet monoamine oxidase activity and plasma 3,4-dihydroxyphenylethylene glycol levels during the menstrual cycle. AB - The influence of endocrine factors on monoamine oxidase activity (MAO) and on noradrenaline metabolism has been evaluated by measuring platelet MAO activity and plasma levels of 3,4-dihydroxyphenylethylene glycol (DOPEG), the major deaminated metabolite of noradrenaline, as well as serum levels of steroid hormones weekly in 9 young healthy women during one menstrual cycle. A decrease in platelet MAO activity (correlated with high serum estradiol levels) was observed during the ovulatory period. In contrast, plasma free or sulfoconjugated DOPEG remained unchanged throughout the menstrual cycle. These results indicate that the hormonal status should be taken into consideration in studies dealing with platelet MAO activity in depressed women. PMID- 3835493 TI - [A case of migraine associated with paralysis of the hypoglossal nerve]. AB - The authors report a 52-year-old woman with migraine in whom transient hypoglossal nerve paralysis developed during an attack. Similar cases published in the literature, including those of Rushton et al. 1978 and Domzal et al. 1982 are analysed. PMID- 3835495 TI - Psychopathology and narcolepsy. AB - Twenty-eight patients with narcolepsy are compared to a sex- and age-matched control population with regard to the frequency of psychiatric symptoms. The occurrence of psychiatric syndromes in narcolepsy patients is also examined. The frequency of psychiatric illness in patients with cataplexy or hypnagogic/hypnopompic hallucinations is evaluated as well. Analysis with the Mann-Whitney test found a significant association between narcolepsy and the symptoms of schizophrenia. Premorbid history of organic brain disease was associated with mental illness, but was nonspecific for psychopathology. PMID- 3835496 TI - Scopolamine and the sensory conditioning of hallucinations. AB - By means of a sensory conditioning procedure, auditory 'hallucinations' were produced in a set of subjects by pairing a light and a tone. The effect of two doses of scopolamine on the occurrence of these hallucinations was investigated, and the results showed that they were more likely to occur after scopolamine than when subjects had received a placebo. This change was attributed to the impairment of information processing induced by scopolamine. PMID- 3835497 TI - Quantitative EEG and neuropsychological effects of piracetam and of the association piracetam-lecithin in healthy volunteers. AB - The electroencephalographic (EEG) and neuropsychological effects of single, oral doses or piracetam (800-6,400 mg) and of its association with lecithin (4,800 mg and 25 g, respectively) were investigated in two groups of healthy volunteers in placebo-controlled studies. The EEG was quantified by power spectral analysis; both parametric and nonparametric procedures were applied to process the EEG and neuropsychological data statistically. The drug plasma concentration was assessed (gas chromatography) in concomitance with the EEG and neuropsychological measurements. Piracetam was found to elicit systematic EEG effects, namely a decrease in the low-frequency components and an increase in the power of the 8.5- to 12.0-Hz and of the fast-frequency components. The EEG modifications were restricted to the anterior scalp areas; its detection by means of parametric statistics was conditioned by the relevant individual variability and was inferred resting upon a number of criteria (indication at nonparametric tests, topography, consistency across subjects, replicability, etc). The correlation between EEG changes and drug plasma concentration was ambiguous, and the compound was not found to be effective on any of the neuropsychological variables considered. The study exemplifies some of the methodological problems in quantitative pharmaco-EEG and emphasizes the relevance of topography and replication. PMID- 3835498 TI - Glutamate decarboxylase immunoreactivity in the intermediate grey layer of the superior colliculus in the cat. AB - Recent evidence suggests that gamma-aminobutyrate has a profound influence on the activity of premotor neurons in the intermediate grey layer of the superior colliculus. In the present study an antibody to glutamate decarboxylase, the synthesizing enzyme for gamma-aminobutyrate, was used to identify and characterize the structures in the intermediate grey layer of the cat that use gamma-aminobutyrate as a transmitter. The material was examined with both the light and electron microscope. Glutamate decarboxylase immunoreactivity was confined, for the most part, to axon terminals. Glutamate decarboxylase positive terminals almost completely cover the soma and proximal dendrites of the large neurons that are characteristic of this layer. Other glutamate decarboxylase positive terminals contact smaller, presumably more distal dendrites. By combining the glutamate decarboxylase immunocytochemistry with the retrograde transport of horseradish peroxidase in single animals, it was demonstrated that the cells of origin of the major descending efferent pathway from the intermediate grey layer, the predorsal bundle, are heavily contacted by glutamate decarboxylase immunoreactive terminals. PMID- 3835499 TI - Immunocytochemical localization of tubulin and the high molecular weight microtubule-associated protein 2 in Purkinje cell dendrites deprived of climbing fibers. AB - The modifications in the localization of tubulin and the high molecular weight microtubule-associated protein 2 were studied in the cerebellum after partial denervation. Both proteins were localized in 40 micron sections using monoclonal antibodies against beta-tubulin (clones Tu9B and Tu12) or microtubule-associated protein 2 (clones AP9 and AP13), and polyclonal antisera against alpha- and beta tubulin or microtubule-associated protein 2, visualized with the immunoperoxidase method of Sternberger [Sternberger (1979) Immunocytochemistry; Sternberger and Sternberger (1983) Proc. natn. Acad. Sci. U.S.A. 80 6126-6130] or a biotin-avidin system. The destruction of the inferior olive was performed in adult male rats by electrocoagulation or by intraperitoneal administration of 3-acetylpyridine. One day after chemical destruction of the inferior olive, anti-microtubule-associated protein 2 staining with either of the monoclonal antibodies or with the polyclonal antiserum was almost identical to that observed in the cerebellum of non-denervated animals. Specific staining was intense in the cell somata and dendrites and absent in myelinated tracts and in parallel fibers. However, 3 days after the lesion anti-microtubule-associated protein 2 staining showed a clear decrease, both in the proximal and the distal portions of thick secondary and tertiary dendritic trunks of the Purkinje cell. The intensity of the staining was also considerably reduced in the fine dendritic ramifications. By 8 days post lesion, microtubule-associated protein 2 immunoreactivity began to increase, but only in the portions of the dendrites deprived of the climbing fibre; on the contrary, low immunoreactivity was found in the fine dendritic ramifications which are contacted by normal parallel fibers; microtubule-associated protein 2 immunoreactivity increased considerably by 11 days post-lesion, giving a pattern quite similar to that of non-denervated Purkinje cells. The alterations in microtubule-associated protein 2 immunoreactivity were also accompanied by a dramatic decrease in the immunostaining for tubulin, beginning on day-3 post lesion and lasting until day-15 post-lesion. These changes were observed with either the monoclonal antibodies against beta-tubulin or with the polyclonal antiserum against alpha- and beta-tubulin. The changes in both molecules were also observed in animals in which the inferior olive was destroyed by electrocoagulation, ruling out the possibility of a direct action of 3 acetylpyridine on dendritic microtubular proteins.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3835500 TI - Trophic interactions between the cochleovestibular ganglion of the chick embryo and its synaptic targets in culture. AB - The effect of the availability of synaptic targets on neuronal survival was tested by explanting the cochleovestibular ganglion from embryonic day 3-1/2 chick embryos and maintaining it in the presence or absence of appropriate synaptic target tissues for 14 days in culture. The targets were the inner ear, peripherally, and the myelencephalon, centrally. Light and electron microscopic observations showed that the ganglion cells in the explants with targets present had generally achieved a degree of differentiation comparable to that of their counterparts in embryonic day 14 embryos. The variety of cell types seen in the normal embryonic day 14 ganglia was also evident in vitro. In ganglia explanted without peripheral or central targets, few neurons survived. Ganglia explanted with either peripheral or central target intact showed considerably better survival than those explanted without any target. Ganglia explanted with only the peripheral target (the inner ear) survived equally as well as those with both central and peripheral targets. Ganglia cultured with the central target (myelencephalon) did not survive as well as those with peripheral targets. The effect of the peripheral target on the ganglion was less clear-cut when ganglia were first dissected from their targets and then recombined in culture. However, the results of such experiments in which nerve fascicles were traced in serial sections from ganglia to target areas, suggest that the actual innervation of target cells, as well as proximity of ganglia to target tissues, could influence neuronal survival. Establishment of innervation appeared to be selective, in that the closest available target area was not always the one contacted by the ganglionic fibers. The present findings are consistent with a role of neuron target cell interactions in supporting neuronal survival in the cochleovestibular ganglion of the chick embryo. Both the central and the peripheral targets are implicated in trophic interactions with the sensory neurons. PMID- 3835501 TI - Parasympathetic neurotrophic activity in the rat iris: determination after different denervations. AB - The iris of the adult rat contains one or several neurotrophic factors that enhance the survival of dissociated parasympathetic neurons (from the embryonic chick ciliary ganglion) in culture. To assay survival activity, iris homogenates were serially diluted with culture medium and the percentage of neurons surviving for 2 days in a collagen matrix in culture determined. The extract induced survival curves that were similar for denervated and normal irides. Similarly no differences in fibre outgrowth from cultured whole ciliary ganglia were found. The results suggest that the apparent level of parasympathetic growth factor(s) is not under strict control of the innervation of the iris. PMID- 3835502 TI - Simultaneous monitoring of dopamine release in rat frontal cortex, nucleus accumbens and striatum: effect of drugs, circadian changes and correlations with motor activity. AB - Changes in homovanillic acid concentration, recorded in vivo by voltammetry with carbon-paste electrodes, were used as an index of dopamine release. With electrodes implanted in frontal cortex, nucleus accumbens and striatum, the pattern of dopamine release was monitored simultaneously in the three brain regions together with the rats' motor activity. Changes in response to the systemic administration of dopamine-receptor agonists and antagonists were used as an index of feedback control of dopamine release. The relationships between dopamine release and motor activity, as well as that between dopamine release in the different brain regions, were investigated by calculating correlation coefficients for data collected over 24-h periods. The results show that dopamine release in frontal cortex is subject to little feedback regulation, that there is no nocturnal increase and no correlation with motor activity. Dopamine release in accumbens and striatum follows a very different pattern. There was a high correlation between dopamine release in these two regions on both sides of the brain; the correlation between the accumbens and the ipsilateral striatum was the highest. Dopamine release in both regions shows evidence of considerable feedback regulation, a nocturnal increase and a high correlation with motor activity. The importance of the accumbens in relation to the level of motor activity is supported by the finding that the correlation coefficient between motor activity and dopamine release in this structure was significantly higher than that between activity and release in the striatum. PMID- 3835503 TI - Morphology of synapses formed by cholecystokinin-immunoreactive axon terminals in regio superior of rat hippocampus. AB - Immunocytochemical and electron microscopic methods were used to examine neurons in regio superior of rat hippocampus displaying cholecystokinin octapeptide-like immunoreactivity. Cholecystokinin-immunoreactive synaptic terminals and somata are found in all layers of regio superior but are most numerous in stratum pyramidale. The vast majority of terminals form symmetric synaptic contacts onto the somata and proximal dendrites of hippocampal pyramidal cells and onto smaller dendrites which may also arise from pyramidal cells. A very small number of cholecystokinin-immunoreactive terminals form synapses that appear asymmetric and contact dendritic shafts or spines. The somata of some pyramidal cells receive symmetric synapses from cholecystokinin-immunoreactive terminals that are joined by cytoplasmic bridges to form parts of pericellular baskets. These and adjacent pyramidal cell somata are also contacted by terminals that are not immunoreactive for cholecystokinin. No cholecystokinin-positive terminals contacted the initial segments of pyramidal cell axons. Cholecystokinin-immunoreactive cells are found in all layers of regio superior. Their somata receive a few symmetric synapses, most of which are formed by terminals not immunoreactive for cholecystokinin. Their dendrites receive a greater number of both symmetric and asymmetric contacts, some of which are immunoreactive for cholecystokinin. We conclude the following: The localization of cholecystokinin immunoreactivity in synaptic terminals contacting the somata and dendrites of hippocampal pyramidal cells is consistent with the suggestion that cholecystokinin acts as a neurotransmitter at these sites and at sites in other parts of the cerebral cortex. Results from the present and previous studies suggest that cholecystokinin-like immunoreactivity may co-exist with gamma-aminobutyrate in some non-pyramidal neurons of regio superior. Cholecystokinin-immunoreactive terminals arise mainly from non pyramidal cells intrinsic to the hippocampus, one class of which appears to be a type of basket cell. PMID- 3835504 TI - The synthesis of primitive 'living' forms: definitions, goals, strategies and evolution synthesizers. AB - The arbitrariness of the definition of life is discussed in relation to both the archaic biological entities that preceded cells during the Molecular Evolution era, and the hypothetical, primitive, 'living' entities that presumably can be synthesized in the laboratory. Several experimental approaches to the synthesis, detection, and characterization of 'living' entities are discussed. The experimental approaches considered for the synthesis are the constructionist strategy, the whole-environment strategy, and the modular strategy, which is a combination of the first two. The whole-environment strategy is discussed in more detail and the establishment of an Evolution Synthesizer, based on this strategy, is proposed and rationalized. The guidelines for the detection and characterization of populations and processes of 'living' entities include chemical and physical analyses, but are based mainly on the reproductive characterization of these entities. It is expected that the higher the evolutionary level of the 'living' entities, the longer and more difficult it will be to synthesize them, but the easier it will be to detect them. PMID- 3835505 TI - Chirally selective, intramolecular interaction observed in an aminoacyl adenylate anhydride. AB - All earthly creatures use only L-amino acids in template directed protein synthesis. The reason for this exclusive use of the L-isomer is not yet apparent, although recent experiments by Usher and his colleagues have shown some stereoselectivity in the aminoacylation of di- and polynucleotides. We have separately reported on intramolecular interactions between hydrophobic amino acid side chains and the adenine ring in aminoacyl adenylates. There was a preferential association of Phe greater than Leu = Ile greater than Val with the adenine in these studies, but we made no attempts to address the question of D, L selectivity. Recently, in 1H NMR studies of N-acetylphenylalanyl adenylate anhydride, we noticed evidence that both D- and L-isomers of the amino acid were present and, furthermore, that one isomer seemed to be associating with the adenine ring more strongly than the other. Using HPLC, we have separated the two diastereoisomers and have enzymatically determined that the isomer which associates more strongly is the biologically important one, the L-isomer. We present those studies here and discuss the evolutionary significance of this finding. PMID- 3835506 TI - Conservation of the secondary structure of protein during evolution and the role of the genetic code. AB - In this communication we demonstrate, in a group of modern proteins, following an algorithm described by Argyle (1980), that the ordination of the amino acids in terms of the most frequent substitutions agrees with the conservation of the alpha-helix, beta-sheet, and beta-turn formation tendencies during evolution. The same correspondence has been demonstrated for the conservation of the physico chemical properties in the amino acid substitutions. Both parameters are similar in showing higher correlation with the most frequent amino acid substitutions than with the feasibility of changes at the level of the respective codons. Some kind of restrictions for the expression of the genomic changes, due to the conservation of the secondary structure of proteins and/or the physicochemical properties of the substituted amino acids, could account for the differences found between the distribution of the amino acid substitutions and the most probable codon changes. PMID- 3835508 TI - [Histopathological pictures of sections of the cervix uteri in Papanicolau cytograms III, IV and V]. PMID- 3835507 TI - [Cytological study of bile sediment and brush smears from the biliary tract obtained by percutaneous and transhepatic routes in patients with mechanical jaundice. Preliminary report]. PMID- 3835509 TI - [Morphological picture of the ovary in endometrioid carcinoma of the contralateral gonad]. PMID- 3835510 TI - [Clinical and morphological evaluation of primary non-Hodgkin's lymphoma of the breast]. PMID- 3835511 TI - [Reversible disorders of spontaneous adherence of alveolar macrophages isolated from the lungs of guinea pigs exposed to cigarette smoke]. PMID- 3835512 TI - [Evaluation of morphological changes in the lungs caused by air blast shock waves. I. Experimental studies in rabbits]. PMID- 3835513 TI - [Evaluation of morphological changes in the lungs caused by air blast shock waves. II. Model studies of the pathomechanism of traumatic changes in the lungs (hypothesis)]. PMID- 3835514 TI - [Histological characteristics of stress-induced myopathy of the musculus longissimus dorsi in swine]. PMID- 3835515 TI - [Collagen in methylcholanthrene-induced rat sarcoma]. PMID- 3835516 TI - [Pediatric surgery before the year 2000]. PMID- 3835517 TI - [Problem of splenic injuries in children: splenectomy and the possibilities of avoiding it]. PMID- 3835518 TI - [Causes of death in children with burns]. PMID- 3835519 TI - [Serum protein disorders in acute and chronic osteomyelitis and the role of protein therapy in their correction]. PMID- 3835520 TI - [Criteria of treating children with cleft palate]. PMID- 3835521 TI - [A case of congenital fetal myodystrophy]. PMID- 3835522 TI - [Congenital fibrous defect of bone tissue in a newborn infant]. PMID- 3835523 TI - [Open injuries of the upper extremity--surgical treatment]. PMID- 3835524 TI - [Diagnosis and preoperative management of congenital esophageal atresia]. PMID- 3835525 TI - [Various aspects of the etiology and pathogenesis of urinary calculi in children]. PMID- 3835526 TI - [Electrocardiographic recording from circumferential right-ventricular leads in infants]. PMID- 3835527 TI - [Serum lysozyme activity in newborn infants with infection]. PMID- 3835528 TI - [Persistence of Staphylococcus aureus in the pharynx of children with chronic tonsillitis treated with autovaccine]. PMID- 3835529 TI - [Ceruloplasmin, haptoglobin and transferrin levels in bronchial secretions in children with chronic diseases of the respiratory tract]. PMID- 3835530 TI - [Urinary excretion of catecholamines, 17-ketosteroids and 17 hydroxycorticosteroids in children exposed to the toxic effects of cadmium and lead in selected areas of Katowice province]. PMID- 3835532 TI - [The patterns of body weight changes and their prognosis in overweight schoolchildren]. PMID- 3835531 TI - [Triglyceride, free fatty acid, lipid and cholesterol levels in the serum of infants with nutrition disorders after stimulation with glucagon]. PMID- 3835533 TI - [Prader-Labhart-Willi syndrome]. PMID- 3835534 TI - [Nettleship's disease in a 6-month-old girl]. PMID- 3835535 TI - [A case of double outlet of the main arterial trunks from the left ventricle complicated by thrombotic changes]. PMID- 3835536 TI - [Opsomyoclonus syndrome in children. A new case. Review of the literature (110 cases)]. AB - The authors report a new case of infantile myoclonic encephalopathy with opsoclonus and neuroblastoma in a 14 months-old infant. Some immunologic abnormalities were found at the initial course of the disease. The review of 110 cases of "dancing-eyes syndrome" permit them to specify clinical features and prognosis but cannot explain the pathogenesis of this rare disease. PMID- 3835537 TI - [Prolactin adenoma in a 14-year-old boy]. AB - Prolactin dosage in delayed growth and puberty leads to the diagnosis of pituitary prolactinoma in a 14 years old boy. Adenoma's size, visual disturbance leads us to elect surgical treatment but persistent hyperprolactinemia after surgery requires medical treatment with bromocriptine. PMID- 3835538 TI - [Fulminating pneumococcal septicemia in children]. AB - Three cases of fulminating pneumococcal septicemia are reported in children aged respectively 3 months, 21 months and 6 years 1 month. The third patient only have been previously splenectomized for traumatic rupture of the spleen. This patient recovered when the two others with an expected normal spleen died quickly. The fulminating pneumococcal septicemia is characterized by the association of severe infection state, collapse and hemorrhagic syndrome with often gastric bleeding. Fatal outcome is observed in 50 to 70% of cases. Most cases occur in asplenic patients that can be explained by the role of the spleen in the infectious defense. This can be prevented by vaccination or penicillin but failure has been observed with both methods. Normal spleen, as observed in two of our patients seems to be rare. Functional hyposplenism might explain such facts. PMID- 3835539 TI - [Postmeningococcal pericarditis in children. A case favoring an immunoallergic process]. AB - A case of pericarditis following meningococcal meningitis in a 19 month old boy is presented. First clinical signs were noted after 5 days of antibiotherapy (Cefotaxime); at that time the meningitis was cured and the bacteriologic studies yielded negative results. Complete clinical recovery was obtained within 24 hours of treatment with prednisone (2 mg/kg), antibiotherapy being stopped 4 days earlier. The pathogenesis of post meningococcal pericarditis is discussed based on the data from the literature. This observation adds support to an immuno allergic origin of this pericarditis. PMID- 3835540 TI - [What is your diagnosis? Geophagia complicated by Toxocara canis infection]. PMID- 3835541 TI - [Percutaneous approach to the internal jugular and subclavian veins in pediatric emergencies]. PMID- 3835542 TI - Traumatic reticulitis, the comet naso-reticular instrument for withdrawal of foreign bodies from the reticulum of cattle. AB - A new idea of a long-acting magnetic probe is presented and tested. The magnetic probe has been designed to remain for a period of time in the reticulum before it is retracted with the foreign bodies adhering to it. The instrument is fixed by a wire passing through the nose, pharynx and oesophagus. No adverse effects on the animal have been observed, and the animal can eat during the treatment. The examination showed that the instrument attracted nearly all the free foreign bodies and the superficially penetrating bodies, resulting in therapeutically good results in 50-55 per cent of the cases examined. The instrument has proved to be capable of attracting as many as 21 foreign bodies at the same time. As a preventive tool, it may be recommended to be used 2-3 times a year. Or it may be used for emptying the reticulum of foreign bodies prior to the application of a permanent magnet. PMID- 3835543 TI - A study of tail tip necrosis in young fattening bulls on slatted floors. AB - A questionnaire sent to 78 producers revealed that tail tip necrosis was seen only in units with fattening bulls housed on slatted floors. Out of 43 such units, 20 (46.5 per cent) reported that tail tip necrosis was a herd problem. All 43 herds were visited, owners were interviewed and housing and management data recorded. It is concluded that tail tip necrosis is a multifactorial disease. The initial lesion is caused by tramping, but the following factors are essential in the development and severity of the disease, i) slatted concrete floors, ii) close confinement, iii) hot season and iv) body weight above 200 kg. The stocking density (expressed as kg bodyweight per square meter pen) was significantly higher in problem herds (210 kg/m2) than in control herds (165 kg/m2). There was a close relationship between high environmental temperature and tail tip necroses. The majority of incidents occurred during the warm season (May through September), very few cases were seen during the colder months. The general morbidity and mortality rates were significantly higher in problem herds than in control herds. Microbiology of affected tails revealed mixed infections in most cases, with Corynebacterium pyogenes and Bacteroides melaninogenicus as the most frequently isolated organisms. Principles of treatment and prevention are discussed. There is evidence to assume that a 10-20 per cent reduction in stocking density could be an efficient prophylactic measure. PMID- 3835544 TI - Two cases of male pseudohermaphroditism in the dog. Clinical, macroscopic, karyotypic and therapeutic features. AB - Two cases of male pseudohermaphroditism in the dog are described, including clinical, macroscopic, microscopic, karyotypic and therapeutic features. The external appearance of both dogs was that of an otherwise normal bilateral cryptorchid. Both dogs developed signs of male feminizing syndrome at 7 and 5 years of age respectively. This prompted exploratory laparotomy, disclosing an uterus, testes at the ovarian sites and Sertoli cell tumours. It is emphasized to include malformations of the genital apparatus in the differential diagnosis of canine urological and endocrine disease. PMID- 3835545 TI - [Effect of the methods of preparing aqueous extracts on the amount of soluble compounds in fascial prostheses]. AB - Methods of testing products made of plastics in medicine do not take into account chemico-toxicological evaluation of biomaterials made of fibres or of foam plastics. According to the project of the monograph Compendium Medicamentorum COMECON, water extracts should be used, where the is proportion would be maintained: 30 g of biomaterial in 100 cm3 of water. The proportion, in case of products with well-developed surface, does not ensure that the material is wholly immersed in fluid. Therefore studies were made on the use of lower concentration of the material in water, with on the other hand, extraction time being prolonged. Summing up, the authors suggest, with regard to grafts, use of the following conditions of water extraction: temperature 120 degrees C, duration 60 min. proportion of the studied material in the amount of distilled water 1:10. PMID- 3835546 TI - [Studies of the possibility of repeated use of capillary dialyzers. I. Renovation method and the evaluation of biological reactivity]. AB - A method devised by the authors of renovation of capillary dialyzers, after rinsing the blood and the liquid systems of the dialyzers is discussed. After rising the blood and the liquid systems of the dialyzers by water at 2 atm.- water being conditioned by the apparatus for reverse osmosis--in the liquid system overpressure of 2 atm was produced by water, the by 0.5% solution of sodium hypochlorite. After 2-3 minutes sodium hypochlorite was rinsed out and both systems were filled in by 1-2% formaldehyde solution. Immediately before using the dialyzer in the same patient the fluid system was rinsed with conditioned water, and the blood system with 21 of sterile distilled water and with 41 of 0.9% NaCl solution. In order to facilitate the renovation process a semi-automatic apparatus was designed, which makes it possible to renovate two dialyzers at once. This method makes it possible to use 80% capillary dialyzers four times with lateral input of the blood system, and four times 100% ones with central input. Experiments on animals and clinical observations and bacteriological studies shoved that the renovation process was atoxic, apyrogenic and sterile. No damage of capillaries and no reactions in subsequent use in patients under dialysis were observed. PMID- 3835547 TI - [Biological studies of Gore-Tex vascular prostheses]. AB - In 1981 we received the Gore-Tex PTFE vascular prostheses, 12 mm in diameter, in order to test their value. Experimental studies were carried out on 6 piglets, in which 5 cm long sections of the prostheses under study were grafted into surgical defects of the thoracic aorta. The dissections were made 1, 3, 6 months after grafting, each time detailed pathomorphological studies were carried out. The results show that PTFE prostheses, grafted into a piglet thoracic aorta was surrounded by fibrinous connective tissue. The tissue on the outside of the prostheses differs in histological structure from that inside. After 6 months it was found that the prosthesis has inside a thin layer of fibrinous connective tissue, connected to the prostheses wall; the layer did not constrict the internal diameter. The Gore-Tex prostheses fulfill biological requirements on vascular prostheses after their grafting into operational defects of the aorta. PMID- 3835548 TI - [Experimental studies of vascular prostheses made of plastics with antibacterial properties]. AB - Bilaterally velour, polyester vascular prostheses were soaked with antibiotics: vibramicin, gentamicin and riphamicin. To obtain more stable binding of the prostheses with the antibiotics, physico-chemical modification of its surface was made. The prostheses retained their bacteriocidal properties even after 120 hours of being in the arterial system of a dog. Experiments of animals show the prostheses are effective in fighting back experimental infection. PMID- 3835549 TI - Congenital hypernephronic nephromegaly with tubular dysgenesis: a distinctive inherited renal anomaly. AB - This paper describes a distinct, apparently inherited renal disorder we call congenital hypernephronic nephromegaly with tubular dysgenesis. The disorder is characterized by oligohydramnios, the Potter phenotype, and enlarged nonfunctional kidneys. Light microscopy demonstrates increased numbers of glomeruli, undifferentiated tubules, and interstitial fibrosis. Microdissection reveals short, immature nephrons that lack proximal convolutions, and abnormal vascularization of the glomerulus. Morphometric analysis demonstrates increased glomerular mass, primarily in the region of the corticomedullary junction, increased interstitial mass, and decreased tubular mass. The parameters that define this anomaly are presented, and the possible mechanisms of pathogenesis are discussed in relation to pathologic observations and current concepts concerning renal embryogenesis and differentiation. The recurrence of this anomaly in the male children of a consanguineous couple suggests an X-linked recessive mode of inheritance, although an autosomal-recessive mode of inheritance cannot be ruled out. This condition indicates that not all cases of the Potter phenotype can be considered to be sporadic. PMID- 3835550 TI - Hepatomegaly and splenomegaly in Kawasaki disease. AB - Pathologic studies of the liver were performed on 30 autopsied cases of Kawasaki disease. The cases were classified into four groups (stages I-IV), and stage IV was further divided into two subgroups according to the duration of the illness at the time of death. Liver weights were markedly increased in stage II (12-25 days) and in stage III (28-36 days) but returned to normal in stage IVb (7 months to 6 years). Likewise, spleen weights were also markedly increased in stages II and III. Stage I (0-9 days) and stage II were characterized by acute inflammation in portal area, and degree of inflammatory changes decreased gradually. There was significant correlation between hepatomegaly and the degree of inflammation in portal areas, but not with definite heart failure or the use of drugs. These data suggest that the pathogenesis of hepatomegaly in acute-stage Kawasaki disease involves the inflammation in portal areas and/or latent heart failure. PMID- 3835551 TI - Morphologic grading of hepatic mitochondrial alteration in Reye's syndrome: potential prognostic implication. AB - Mitochondrial alterations are known to be constantly associated with Reye's syndrome. Fifty-eight liver specimens from 50 patients who fulfilled the clinical and pathologic criteria were examined by electron microscopy. The degree of mitochondrial injury was graded I, II, and III according to the severity of the alteration of mitochondrial matrix. The results correlated well with clinical parameters--specifically initial clinical stage, peak clinical stage, and clinical outcome. Electron microscopic examination of hepatic mitochondria is therefore potentially useful in evaluating Reye's syndrome patients. PMID- 3835552 TI - Juvenile granulosa cell tumor of the infant testis: case report with ultrastructural observations. AB - This report describes the light-microscopic and ultrastructural features of a juvenile granulosa cell tumor of infant testis. Microscopic examination revealed a macrofollicular patterns simulating the preovulatory Graafian follicle and the juvenile granulosa cell tumor of the ovary. Ultrastructure confirmed three cell types: granulosa, theca interna, and externa, with occasional luteinized cells lacking crystalloids of Reinke. Charcot-Bottcher crystalloids were not detected, though rare cells contained a complex arrangement of filaments. An ultrastructural comparison was carried out with infant testes (2 cases), preovulatory Graafian follicle (1 case), juvenile granulosa cell tumor of ovary, adult granulosa cell tumor of ovary, and adult Sertoli cell tumor of testis and ovary. Ultrastructural similarities were noted between the present case and primitive Sertoli cells, preovulatory granulosa cells, and juvenile granulosa cell tumor of ovary. This may reflect the common histogenesis of Sertoli/granulosa cells from the common specialized gonadal stroma. PMID- 3835553 TI - Congenital posthemorrhagic hydrocephalus: report of a case. AB - A newborn infant with hydrocephalus was found to have residua of subependymal intraventricular hemorrhage and associated obliterative arachnoiditis. This process is well known in the postnatal period but not as an in utero event. The present article documents antenatal intraventricular hemorrhage as a cause of hydrocephalus. PMID- 3835554 TI - Time course of the intrahepatic lesion of extrahepatic biliary atresia: a morphometric study. AB - The time course of the intrahepatic lesions of untreated extrahepatic biliary atresia was evaluated by morphometric analysis of 49 specimens from 27 patients. The data show an early phase of rapid bile ductular proliferation, with peak in this material at 205 days, followed by rapid duct regression to approximately 400 days, and slower progressive intrahepatic duct loss thereafter. The ratio of ducts to connective tissue in portal tracts follows a similar course. Connective tissue in portal tracts rises on a slower course and continues to increase after maximum duct regression is reached, so the ratio of parenchyma to fibrous septa falls over the later course of the process. Although duct and connective tissue proliferation in hepatic portal tracts is associated in many liver diseases, the data of this study demonstrate dissociability of the relationships, with the fibrosis in the later stages of the intrahepatic process in extrahepatic biliary atresia apparently neither responsive to nor inducing biliary ductular proliferation. PMID- 3835555 TI - Preferentially longer survival of males than of females with untreated extrahepatic biliary atresia: correlations with time course of intrahepatic lesions and suggestion of possible ethnic influences. AB - Males with untreated or unsuccessfully treated extrahepatic biliary atresia show statistically significantly longer survival than females. Females show a greater degree of intrahepatic biliary ductular proliferation than males in the early phase of the process (to age approximately 200 days) and greater duct regression and more rapid connective tissue proliferation than males from approximately 200 to 400 days. Females also show greater frequency of statistically significant hepatomegaly than males over the first year. The black and Hispanic patients in this series tended to show a less marked degree of bile ductule proliferation in the early phase of the process than other patients, but the numbers of such patients available for study were not enough for statistical significance. This point, and its possible clinical correlates, will require further analysis, as will possible biochemical explanations for the differences between males and females in the time course of the intrahepatic lesions of extrahepatic biliary atresia. PMID- 3835556 TI - Angiosarcoma of the liver and spleen in an infant. AB - A 14-month-old white male was diagnosed as having angiosarcoma of both the liver and spleen. At 17 months he developed pulmonary metastases and died. There was no apparent environmental or hormonal exposure either prenatally or during infancy. The malignant tumor probably arose from its benign counterpart (hemangioendothelioma), which was found in the spleen. This is the fifth case reported of splenic angiosarcoma in the pediatric age group (18 years or younger). PMID- 3835557 TI - Heterotopic brain presenting as a cystic neck mass with mandibular deformity. AB - A congenital cystic neck mass causing respiratory distress and hypoplasia of the mandible was excised from a 3-month-old infant. The lesion was subsequently diagnosed as heterotopic brain, a rare, benign condition that should be considered in the differential diagnosis of the neonatal head and neck mass. PMID- 3835558 TI - [Comparative data on the glutathione and methemoglobin levels in the blood of pregnant and nonpregnant white rats inhaling NO2]. AB - Nitrogen dioxide /NO2/, is one of the basic photochemical atmospheric pollutants possessing both direct and indirect toxic effects. When inhaled NO2 affects directly the blood hemoglobin forming methemoglobin. The rate of effect depends on the level of the intra-erythrocyte redox systems and in the first place on the reduced glutathione. The systemic toxic effects of NO2 and is easy penetration through the hemato-alveolar barrier are well known. However the effects of NO2 on the organism during pregnancy have nor been studied. The present study has been designed to evaluate the effect of NO2 on the reduced oxidized glutathione and the level of methemoglobin in the blood of pregnant and nonpregnant female rats. Inhalation exposure of pregnant albino rats to NO2 in concentration of 10 and 1 mg/m3, 5 hours daily, throughout gestation /21 days/, induces an increased synthesis of glutathione and shifting towards the reduced form, which could be taken as a sign of adaptive mechanisms. The nonpregnant animals show no such effect, as they more easily compensate the oxidizing effect of NO2. At the age of 1 month the progeny of the NO2-exposed mothers show the same tendency to an elevated synthesis of glutathione and increase of its reduced form. When treated again with NO2 at the same dose levels during gestation, the F1 females show no changes in blood glutathione, but the level of methemoglobin is raised--an effect not observed in the parental generation. PMID- 3835559 TI - [Changes in the physical environmental factors in modern buildings related to the use of polymeric construction materials]. AB - The polymeric materials are used on a large scale in building and furnishing of modern edifices. However, in spite of the doubtless positive effect there are a number of important hygienic problems, related to the ability of these new materials, at unregulated and not controlled usage, to cause unfavourable changes in the parameters of the environment and through them to affect the health and spirits of the inhabitants. The basic hygienic problems in the application of polymeric building materials /PBM/ are derived from the elimination of harmful chemical substances from the latter. Besides of great importance are the changes in the physical parameters of the environment in the premises of the edifices, arising from the accumulation of static electricity on the surface of the PBM, the aggravated thermal technical characteristics of some materials, etc. The results of the hygiene investigations for thermal protective properties of different types of PBM, used as floor covering and their effect on the thermal metabolic processes and colds of the inhabitants are pointed out. The biological effect of static electricity and the dependence of the electrification of the materials on the composition and the physico-chemical nature of the materials and some microclimatic parameters and other exploitation conditions are clarified. Recommendations are given for the preliminary hygienic control of these materials, in order to avoid the aggravation of the parameters of the environment in the modern buildings. PMID- 3835560 TI - [Health status of 1st- to 3d-grade pupils in a unified secondary polytechnical school entering school at different ages]. AB - The purpose of the present work is to study the effect of training in the new unified secondary polytechnical school /USPS/ on the health status of students from I-III class, with initial school age 6 and 7 years, realized in the conditions of 5-day school week and all day organization of the training process. A longitudinal observation /I to III class/ on the health status of 6 divisions of schoolchildren in Sofia and Burgas is performed--on those starting at the age of 6 /experimental/ and 7 years /controls/. Besides a transversal investigation of a total number of 1657 students of I-III class in 10 districts of the country was carried out, distributed in like manner between 6 and 7 years old schoolchildren. On each stage of the study were made medical examinations with paraclinical ones /blood and urine/, and during every school year information has been gathered for all cases of acute diseases. It was established that the health status of the examined schoolchildren of I-III class of the unified secondary polytechnical schools, evaluated on the basis of data taken from the acute and chronic somatic diseases is good. There are no abrupt differences in the health of both compared groups of schoolchildren. A slight tendency for deterioration of the health is observed among those starting school at 6 years. PMID- 3835561 TI - [Problems of the extracurricular regimen of pupils (1st to 3d grades)]. AB - The purpose of the present work is to make a hygiene evaluation of some basic moments of the-of-school regimen of schoolchildren from the first grades. The longitudinal regimen of schoolchildren from I-III class of on school in Sofia is studied and 68 classes of 10 district of the country. In out-of-school regimen is investigated by specially prepared questionnaire, completed with the assistance of the parents. The hygienic evaluation of the out-of-school regimen is made on the basis of the present hygiene requirements with the principal regime moments and comparison of the results from the investigation of students age 6 and seven. The results received served as basis in the preparation of "Complex measurements including and rational daily regimen of students from the first classes". PMID- 3835562 TI - [Psychophysiological bases of occupational selection for fine-detail repair work]. AB - The determination of the complex--important professional psychological features, which has to respond, at the beginning of the professional training, to the requirements of one of the most popular variety of work on the belt--installation of small details--was performed by examining some functions of the higher nervous system (HNS) and some individual peculiarities in the professionally "successful" and "failures" at different stages of their professional activity. The received statistically significant differences between the polar groups allow us to accept, that on the basis of the capability to master the specialty--fitting of watches stand: Weak nervous system, moderate inertness of the nervous processes. Accuracy of static and dynamic coordination of hands. Expressed social responsibility. Self-control (establishing the standards for control actions, knowledge of signal signs. PMID- 3835563 TI - [Physical work capacity under different levels of measured stress in relation to type-A personality in intellectual workers]. AB - The physical work capacity of 122 designers is defined in order to characterize the effect of work activity in the individual standard types /types A and B/ at physical dosage loading. The following methods are used: bicycle ergometry with determination of lung ventilation, oxygen consumption, pulse frequency, etc. by means of the Jaeger ergooxyscreen. Defining the type of behavior of the individual by Rosenman's questionnaire. Determination of catecholamine excretion after the method of Euler and Lishajko. The results pointed out that the physical work capacity of designers is satisfactory and mean in rate, evaluated according to the internationally confirmed classifications. The effect of hypokinesia, age and sex differences and the importance of type A are discussed in relation to the reaction of the organism to the dosage loading, as well as some methodological problems concerning the determination of type A way of behavior. PMID- 3835564 TI - [Changes in the physiological and biochemical parameters of students during an examination]. AB - During exercises /control/ and examination on work psychology /experiment/ were investigated the cardiac frequency, blood supply of extremities, peripheral vessel tone, velocity of pulse wave spreading, EKG, pulse variety, skin resistance, excretion of adrenaline, noradrenaline, 11-OCS and other parameters. It was established that an examination is a good model of studying the changes during stress. Characteristic intersexual and interindividual differences were found. The work is part of a broad investigation on the relation between rate of stress, changes in the organism, success, spirits, subjective perception of tenseness, individual importance of the situation, the degree of training, etc. PMID- 3835565 TI - [Immunological reactivity in a radiation microclimate]. AB - Bearing in mind the complexity of the radiation factor in industrial conditions the aim of work was to investigate the immunological reactivity in the conditions of glass production. The following methods were used: bactericide properties of skin, quantity of deep microflora of the skin, lysosome activity of the saliva, phagocytic activity of neutrophils in blood, bactericide properties of serum and serum complement. A decrease in the immunological reactivity of the organism was established which was most strongly expressed in relation to the bactericide properties of the skin, lysosome activity of the saliva and the phagocyte activity of the neutrophils in blood. PMID- 3835566 TI - [Biochemical changes in the myocardium in experimental chronic pirazofos poisoning]. AB - The authors investigate the 12 month effect of the organophosphorus pesticide "Pyrazophos", in the myocardium status of albino male rats treated per os by 1/20, 1/100, and 1/200 LD50 of the preparation /LD50 for male rats 218 mg/kg/. The enzyme activity of ATP-ase, G6P-ase, F1,6 P-ase, PGlM, LDH, SucDH, iCDH, the quantity of soluble and insoluble collagen and elastin proteins were examined as well as the content of polycarbohydrate components /total and sulphated glycosaminoglycan and glycoproteins/ of the basic intercellular substance. The results point out that the preparation in doses 1.1 and 2.2 mg/kg and especially 11 mg/kg at continuous introduction cause cardiotoxic effect, and the changes affect first of all the components of the basic intercellular substance /with sGAG, GAG/ and to a lighter extent the enzyme activity in the cardiac muscle. The collagen and elastin proteins, constructing the fibrous structures remain comparatively stable. The experimental data have to be taken into consideration in the hygiene standardization of the organophosphorus preparation "Pyrazophos". PMID- 3835567 TI - [Glutathione in the blood and dehydrogenase activity in the serum of workers engaged in the manufacture of divinyl (1,3-butadiene)]. AB - Examinations were carried out on 75 workers engaged in the production of divinyl, in order to evaluate the detoxifying and carbohydrate function of the liver. A significant statistic decrease of glutathione in blood was established, which gave grounds to propose this index as early criterium for the toxic effect of divinyl. A decrease in the dehydrogenase activity in the serum of workers was established. These changes were accepted as non-specific. The highest professional risk is evident with the technological staff. PMID- 3835568 TI - [Respiratory function study of workers engaged in vinyl chloride and polyvinyl chloride manufacture]. AB - A hygienic evaluation is made on the work conditions in the production of vinyl chloride and polyvinyl chloride. Studies were carried out on 516 workers after the following indices: vital capacity /VC/, forced expiratory volume per sec. /FEV1/, peak expiratory capacity /PEC/, maximum expiratory capacity 75 /MEC75/, maximum expiratory capacity 50 /MEC50/ and maximum expiratory capacity 25 /MEC25/. It was established that 33.13% of the workers were with ventilation disturbances. The most frequently met was the obstructive syndrome of ventilation insufficiency. The infringements were most often in workers with length of service up to 1 year. PMID- 3835569 TI - [Liver enzyme function and humoral immunity in workers exposed to vinyl chloride]. AB - The work aims at studying the enzyme function of the liver, as well as the humoral immunity of workers engaged in the production of vinyl chloride and polyvinylchloride with proved hepatotropic and Raynaud syndromes. About 191 workers /experimental group/ from the synthesis and polymerization of vinyl chloride and 2 control groups--34 persons from Varna and 54 from G. Traikov were examined. The following biochemical and immunological studies were performed: GOT, GPT, GGTP, alkaline phosphatase, IGG, circulating immune complexes, titer of the complement, cryoglobulins in the serum and identification of the sediments by immunoelectrophoresis. It was established that the immune system was included in the early phases of toxic effect. Disturbances in the enzyme function and humoral immunity were registered both in workers with hepatotropic and Raynaud syndromes. PMID- 3835570 TI - [Kinetic study of phthalate accumulation and elimination in a model of inhalational exposure in volunteers]. AB - Studies were performed on volunteers exposed to 0.5 and 2 mg/m3 diethylhexyl phthalate for a period of 5 days. The accumulation of diethylhexyl phthalate in blood and its elimination with urine was traced. Accumulation of phthalates in the organism was established even in lower MAC concentration of 0.5 mg/m3, which puts the problem of reevaluation of this norm (1 mg/m3). PMID- 3835571 TI - [Biochemical pulmonary research in experimental exposure to xylene and noise]. AB - In an experiment with albino rats was studied the combined effect of xylene in concentration 300 mg/m3 and noise with different intensity /85 and 95/ on the lung tissue. The independent noise effect lead to no significant deviations in the followed up biochemical indices. The isolated xylene exposure determined the occurrence of certain metabolite disturbances in the lung tissue, which were considerably more expressed on the background of noise. PMID- 3835572 TI - Serum myoglobin in athletes after physical activity. PMID- 3835573 TI - [Evaluation of various methods of preserving samples for the study of intestinal microflora]. AB - Intestinal microflora changes in ten adult and healthy subjects after storage of specimen with different modalities, temperatures and times were evaluated quantitatively and qualitatively. Aerobic components (Enterobacteriaceae, Enterococcus, Staphylococcus and Bacillus spp.) did not show considerable variations of concentration in all maintenance conditions. Anaerobic components showed different capacity of survival for every researched genus: Clostridia and Lactobacilli, even kept frozen for one month in glycerol broth at -70 degrees C, maintained a stable viable count; Bacteroides, Fusobacteria, Veillonellae and Peptostreptococci were found stable after one week, while after one month showed a loss of concentration superior to 4 Log; Eubacteria were found remarkably reduced after seven days and completely lost after one month. PMID- 3835574 TI - [Study of IgG antibodies to PPD with an immunoenzyme method (ELISA) in the serum of patients with pulmonary tuberculosis]. AB - ELISA has been used for the detection of IgG antibodies against PPD in 48 patients with pulmonary tuberculosis, in 10 individuals with previously treated tuberculosis and clinically recovered, in 22 PPD skin-test positive healthy volunteers and in 48 blood donors with unknown PPD skin-test. Positivity was obtained in 29 patients (83%) with active tuberculosis, in one patient (10%) with clinical recovery, in none of the healthy controls. This technique may have a potential diagnostic relevance in evaluating patients with suspected pulmonary tuberculosis. PMID- 3835575 TI - [Binding capacity of albumin with bromcresol green in a group of women of fertile age]. AB - Albumin binding ability was studied in 551 women of fertile age through the dye binding test with BCG. In 61 cases (11.0%) no binding was found: 47 women (77.0%) were pregnant at the time the blood test was performed. Such a result agrees with previous studies which indicate a reduced albumin binding ability in the blood of near term pregnant women and in the umbilical cord. PMID- 3835576 TI - [Determination of the antiplasmin activity of platelets with a chromogenic substrate]. AB - The synthesis of chromogenic substrate has opened new prospects to the study of haemostasis factors and particularly to the determination of coagulation inhibitors and components of fibrinolysis. In this paper we propose a new and simple method to anti-plasmin activity of platelets, by using H-D-Valyl-L-Leucyl L-Lysine-p-nitroanilide HCl (S-2251) (Kabi Company, Sweden) as a chromogenic substrate. PMID- 3835577 TI - Molecular mechanisms of ischemic brain damage. PMID- 3835579 TI - Cerebral protein synthesis and ischemia. PMID- 3835578 TI - Heterogeneous distribution of hydrogen and bicarbonate ions during complete brain ischemia. PMID- 3835580 TI - Free radical damage of the brain following ischemia. PMID- 3835581 TI - Selective vulnerability of the hippocampus to ischemia--reversible and irreversible types of ischemic cell damage. PMID- 3835582 TI - Microphysiology of selectively vulnerable neurons. PMID- 3835583 TI - Calcium entry blockers: autoradiographic mapping of their binding sites in rat brain. PMID- 3835584 TI - A role for the mitochondrion in the protection of cells against calcium overload? PMID- 3835585 TI - [Diagnosis of the so-called mixed connective tissue disease (MCTD)]. PMID- 3835587 TI - [Lipid-mobilizing activity in experimental hyperthyroidism and hypothyroidism]. PMID- 3835586 TI - [Pyruvate kinase activity in the granulocytes of patients with psoriasis]. PMID- 3835588 TI - [Hemodynamics in atrial septal defects of the ostium secundum type associated with mitral valve prolapse]. PMID- 3835589 TI - [Correlations between morbidity, hospitalization and mortality and environmental factors]. PMID- 3835590 TI - [Risk factors and the development of ischemic heart disease during a 6-year observation of male population. V. Evaluation of probability of the development of myocardial infarction using risk function calculated for different populations]. PMID- 3835591 TI - [Differences in the migration capacity of peripheral blood leukocytes in vivo and in vitro in patients with mycoses]. PMID- 3835592 TI - [Current possibilities in treating diseases of the locomotor system with cold]. PMID- 3835593 TI - [Effect of homeopathic remedies]. PMID- 3835594 TI - [Diagnosis of post-traumatic coma based on EEG examination]. PMID- 3835595 TI - [Effect of noise on the hematopoietic and immune systems. I. Sources of noise, occupational exposure and general pathophysiological effects]. PMID- 3835596 TI - [Role of Mycoplasma hominis and Ureaplasma urealyticum in the etiology of various diseases]. PMID- 3835597 TI - [Hemangiomas of the vertebrae (data of the Institute of Oncology in Cracow)]. PMID- 3835598 TI - [Diagnosis and indications for the surgical treatment of peptic ulcer]. PMID- 3835599 TI - [Principles of selecting a surgical method in the treatment of patients with peptic ulcer]. PMID- 3835600 TI - [Bone maturation of children from 0 to 6. Wrist and hand. Part I. Quantitative analysis]. PMID- 3835601 TI - [Bone maturation of children from 0 to 6. Wrist and hand. Part II. Probit analysis for isolated bones]. PMID- 3835602 TI - [Initial reading-writing learning as a prognostic factor of subsequent achievement]. PMID- 3835603 TI - [Pierre Robin syndrome, a new modality of treatment]. PMID- 3835604 TI - [Physical growth and morbidity in the 1st year of life based on birth weight]. PMID- 3835605 TI - [Consultation on morbidity in adolescents in primary care]. PMID- 3835606 TI - [National Program of Supplemented Food 1965-1985]. PMID- 3835607 TI - [Surgery in chronic renal failure]. PMID- 3835608 TI - [Genes, chromosomes and cancer]. PMID- 3835609 TI - [Do vasodilators have a role in the treatment of pulmonary hypertension in chronic obstructive bronchopneumopathies?]. PMID- 3835610 TI - [Pulmonary complications in burn patients and their functional repercussions]. AB - The authors review the literature about respiratory burns and their initial and late functional repercussions. Upper airway oedema induces initial upper airway obstructive impairment. Pulmonary parenchymal failure is characterised by the functional consequences observed with adult respiratory distress syndrome. Survivors may be free of functional impairment. Smoke inhalation syndrome leads to variable airway obstruction resolving usually within 5 months. Persistence of an obstructive impairment may be due to the development of polyposis and/or stenosis in large airways, bronchiolitis obliteration or bronchiectasis. PMID- 3835611 TI - [True acute lobar pneumococcal pneumonia. Apropos of 51 cases]. AB - In a retrospective study of 51 cases of acute pneumococcal pneumonia in Morocco, predominantly male subjects were affected without past medical history or pathology. The pneumonia was accompanied by an effusion in 18% and a bacteraemia in 11%. The most serious pneumonias were those complicated by meningitis (12% of cases) or septic shock (1 case). The presence of factors implying a poor prognosis (meningitis, septic shock, bacteraemia, advanced age) increases the mortality. Penicillin G is the antibiotic of choice. In low doses it is sufficient to achieve a cure in uncomplicated cases. In the severe forms, high doses do not always prevent a fatal outcome. The availability of a vaccine adapted for the African serotypes would enable people with special risk factors to be treated. PMID- 3835612 TI - [Diagnostic and therapeutic thoracoscopy in 83 cases of chronic pleurisy]. AB - From May 1983 to June 1985 the authors performed a thoracoscopy as a diagnostic and therapeutic objective in 83 patients with chronic recurrent pleurisy; amongst these patients, 69 had know intra or extra thoracic cancer and the other 14 presented with an isolated pleurisy. Eight other patients had pleural carcinomatosis proven by needle biopsy and had pleural talc introduced by thoracoscopy. The examination was performed under local anaesthesia with neuroleptanalgesia; a rigid 7 mm diameter thoracoscope was used; the biopsies were performed uniquely on the parietal pleura using tropical forceps. The outcome was uncomplicated with no deaths nor any serious complications due to the method. The sensitivity of the pleural biopsy was 91.5% or 76 positive biopsies out of 83. 73 biopsies were metastatic and 3 were tuberculous pleurisies. The macroscopic appearance was strongly suggestive of malignancy in 78 patients and appeared inflammatory in 13, of whom 9 cases were positive on biopsy. The authors performed a pleural talcage in every case; a lasting pleural adhesion was obtained in 66 patients but regrettably there were 14 failures, the effusion recurring after removal of the drain. The authors stress the reduced number of incidents of pleural effusion, which confirms the good tolerance of pleural endoscopy. PMID- 3835613 TI - Silicone oil in vitreoretinal surgery. Part 1: Surgical techniques. AB - The use of silicone oil in the management of intractable retinal detachment associated with proliferative vitreoretinopathy is increasing. Based on clinical experience in over 240 cases, the authors describe their current surgical techniques involving silicone oil, as well as the avoidance and management of associated intraoperative complications. PMID- 3835614 TI - Silicone oil in vitreoretinal surgery. Part 2: Results and complications. AB - The surgical results and postoperative complications associated with silicone oil injection in the treatment of complicated retinal detachment were evaluated in a series of 164 eyes followed for a minimum of 6 months. The incidence of recurrent retinal detachment, corneal decompensation, cataract, glaucoma, and hypotony were noted to be high, and the final visual results were often disappointing. The avoidance and treatment of these complications are discussed, and removal of the silicone oil after sustained anatomic retinal reattachment has been attained is recommended. PMID- 3835615 TI - Cavernous hemangioma of the retina. Genetic and central nervous system involvement. AB - A 1967 report described retinal "telangiectasia" in a brother and sister. The brother also had concurrent immune deficiency with hypogammaglobulinemia. Several reports have since been published on similar retinal vascular lesions, which have been termed "cavernous hemangioma of the retina." In retrospect, it is likely that this sibling pair also had cavernous hemangioma of the retina and brain, and that the hypogammaglobulinemia was an independent problem. Our report provides a 19-year follow-up on three generations of this family. The affected generations support the diagnosis of a phakomatosis having autosomal dominant inheritance. Cavernous hemangioma of the retina is usually a stable disease, but there is a potential risk of intracranial hemorrhage from cavernous hemangioma of the brain. Family members, with and without fundus findings, should therefore undergo computed tomography or magnetic resonance imaging of the brain, because neurosurgical prophylaxis or treatment may be indicated. PMID- 3835616 TI - Cavernous hemangioma of the retina and retinal telangiectasis. Distinct or related vascular malformations? AB - Cavernous hemangioma of the retina and retinal telangiectasis are two rare developmental vascular lesions of the retina. They are considered to be distinct clinical entities, but they share some common features, so that the differential diagnosis of the two diseases is an important clinical challenge. In the right eye of a young woman, a cavernous hemangioma of the retina close to an area of retinal telangiectasis was found. This association supports the possibility that these developmental anomalies could be strictly related. PMID- 3835617 TI - Exchange transfusion in sickling maculopathy. AB - Unilateral macular infarction occurred in a 23-year-old black man with sickle cell hemoglobinopathy (SS), who was already receiving oxygen and hydration treatment for a painful crisis. Visual acuity of 20/200-1 in the affected eye did not improve with 36 hours of "conservative" treatment. Fifteen hours after an exchange transfusion, however, visual acuity started to improve. By 36 hours after transfusion, a visual acuity of 20/40 was achieved, with the gradual return over 8 weeks to 20/20. This case provides strong circumstantial support for the effectiveness of exchange transfusion in sickling maculopathy. PMID- 3835618 TI - Retreatment of retinal breaks using a thin cryoprobe without displacement of the scleral buckle. AB - A thin (20-gauge) cryoprobe can be used to retreat retinal breaks without disturbing a previous scleral buckle. The fibrous sheath covering the episcleral exoplant is incised at its anterior margin, and the 20-gauge probe is introduced between the exoplant and the sclera. Angling the tip slightly permits precise treatment around the retinal break, without removing and replacing the scleral sutures securing the exoplant. PMID- 3835619 TI - Controlled drainage of subretinal and choroidal fluid. AB - Controlled drainage of subretinal fluid is achieved using a 25-gauge needle, passed obliquely through the sclera. This reduces the risk of choroidal hemorrhage and retinal incarceration. PMID- 3835620 TI - Pupillary stretching. A new procedure in vitreous surgery. AB - During vitreoretinal procedure, 26 aphakic eyes with proliferative vitreoretinopathy and diabetic traction retinal detachment were treated with a new technique for surgical dilatation of a miotic immobile pupil. Four iris loop sutures were laid in such a way that stretching of the pupil in the main directions of the four quadrants was made possible, thus forming a large, square pupil. No functional iris lesion was caused in nine eyes that developed miosis only during surgery. The other 15 eyes already had a miotic and rigid pupil preoperatively. In all but one of these cases, the stretching caused multiple small sphincter tears. The pupils remained partially dilated, but showed a reaction to miotics and mydriatics. PMID- 3835621 TI - Models for assessing scar tissue inhibitors. AB - The main purpose of animal models for proliferative vitreoretinopathy (PVR) is to develop pharmacologic therapies for this common cause of blindness. A very large number of pharmacologic agents appear to have potential use in this application by preventing cell proliferation and/or contraction. In practice, however, it has been found that prohibitively extensive numbers of animals and laboratory services are required to establish drug efficacy, safety, and dosage regimes. To lessen this work load and to accelerate drug screening programs, the authors have developed an in vitro model for PVR based on chorioretinal fibroblast growth in three-dimensional collagen lattices. This model yields precise data on the effect of drugs on cell proliferation and contractility. Trifluoperazine, colchicine, 5 fluorouracil, dexamethasone, and penicillamine were screened in this model. The first three agents were found to be inhibitory; on the basis of the pharmaco kinetic data, obtained dosage regimes for animal testing were developed. The results obtained are discussed in terms of the in vitro model and the biochemical action of these drugs on the cellular events in PVR. In vitro screening of drugs prior to animal testing offers a significant advance in the quest for a pharmacologic prevention of blindness due to PVR. PMID- 3835622 TI - [Idiopathic edema: a psychosomatic disease? I. Psychological aspects and personality profile]. PMID- 3835623 TI - [Hemodynamic effects of nifedipine in acute myocardial infarction]. PMID- 3835624 TI - [Asymptomatic chronic aortic insufficiency: clinical and echocardiographic follow up of 41 asymptomatic patients]. PMID- 3835625 TI - [Echocardiography in bacterial endocarditis]. PMID- 3835626 TI - [Thymoma: a clinico-pathological study of 14 cases]. PMID- 3835627 TI - [Gastric cancer in the Talca Regional Hospital]. PMID- 3835628 TI - [Esophageal foreign bodies in adults]. PMID- 3835629 TI - [Ventricular septal defect after myocardial infarction and acute renal insufficiency]. PMID- 3835630 TI - [XY translocation in a woman with dyschondrosteosis and sterility]. PMID- 3835631 TI - [Histopathology of skeletal muscle]. PMID- 3835632 TI - [Pathogenesis of cell death: point of no return. Part I]. PMID- 3835633 TI - [The hyper-IgE syndrome]. PMID- 3835634 TI - [Immunobiology of idiopathic pulmonary fibrosis]. PMID- 3835635 TI - [Unspecific bronchial hyperreactivity in inactive pulmonary tuberculosis]. PMID- 3835636 TI - [Effect of colchicine on hepatic damage induced by carbon tetrachloride in rats]. PMID- 3835637 TI - [Programmed electrical stimulation of the heart in the identification of high risk patients after acute myocardial infarct]. PMID- 3835638 TI - [Ketoconazole in the treatment of advanced cancer of the prostate: experience with 14 patients]. PMID- 3835639 TI - [Bronchial tuberculosis: experience in 27 patients]. PMID- 3835640 TI - [Thrombolysis with intracoronary streptokinase in 11 patients with acute myocardial infarction]. PMID- 3835641 TI - [Gastric pseudolymphoma. Anatomo-clinical study of 4 cases]. PMID- 3835642 TI - [In vitro activity of 4 cephalosporins on gram-negative bacteria and Staphylococcus aureus of hospital origin]. PMID- 3835643 TI - [Immotile cilia syndrome]. PMID- 3835644 TI - [Orbital and cerebral mucormycosis in 2 diabetic patients]. PMID- 3835645 TI - [Analysis of a teaching-learning model with adult ambulatory patients]. PMID- 3835646 TI - [Pathogenesis of cell death: the point of no return. II]. PMID- 3835647 TI - [Infectious diseases in Chile: current status and perspectives]. PMID- 3835648 TI - [Mechanisms of damage and repair of the respiratory tract]. PMID- 3835650 TI - [Medicine and philosophy (XI)]. PMID- 3835649 TI - [Interstitial lung diseases]. PMID- 3835651 TI - [Concept of the total man in contemporary medicine]. PMID- 3835653 TI - [Medicine for the healthy man confronting the question: do we prevent or do we treat diseases?]. PMID- 3835652 TI - [Bacterial endocarditis. Comments on 54 cases]. PMID- 3835654 TI - [Cushing's syndrome with ectopic ACTH secretion]. PMID- 3835655 TI - [Renal ectopia]. PMID- 3835656 TI - [Pancreatic fistulae]. PMID- 3835657 TI - [Prospective epidemiologic study of the characteristics of the evolution of influenza in collectives of children and adolescents]. PMID- 3835658 TI - [Experimental research on the effect of protective materials used in deep cavities on the dental pulp]. PMID- 3835659 TI - [Severity factors in uterine cancer]. PMID- 3835660 TI - [Experimental research on depression using psychological tests in the psychiatric clinic]. PMID- 3835661 TI - [Synthesis of diacetylmonoxime, a reagent for measuring urea in biological fluids]. PMID- 3835662 TI - [Therapeutic visceral arterial embolization (TVAE). III. Splenic TAE (medical splenectomy)]. PMID- 3835663 TI - [Functional exploration of the exocrine pancreas]. PMID- 3835664 TI - [Surgical treatment of primary pulmonary suppurations]. PMID- 3835665 TI - [Hydatid cyst of the pancreas]. PMID- 3835666 TI - [Primary malignant lymphoma of the breast]. PMID- 3835667 TI - [Diagnostic problems at the level of general medicine facilities in a rural area and in small urban centers]. PMID- 3835668 TI - [Responsibility of the physician in performing a medical function]. PMID- 3835669 TI - Proliferation of primary sensory neurons in adult rat dorsal root ganglion and the kinetics of retrograde cell loss after sciatic nerve section. AB - This study was aimed at measuring the kinetics of retrograde death among primary sensory neurons axotomized by transection of the ipsilateral sciatic nerve in adult rats. Using electrophysiological and retrograde transport methods, we first determined that most sciatic afferents enter the spinal cord along the L4 and L5 dorsal roots (DRs), and that about 54% of the cells in the L4 and L5 dorsal root ganglia (DRGs) project an axon into the sciatic nerve. Knowing this value, we could then calculate the rate of loss of axotomized neurons from the overall rate of neuron loss in the DRGs at different times after the lesion. Following unilateral sciatic neurectomy, we found a steady falloff in the ratio of DRG neurons on the operated versus the intact control sides in cresyl-violet-stained serial paraffin sections. We were surprised to note, however, that on the control side there was a steady increase in the cell count with age. Counts done on a series of unoperated rats of various ages confirmed this natural increase. Overall, new neurons accrete at an average rate of 18.1 cells per day to the combined L4 and L5 DRGs, nearly doubling their numbers during the adult life of the animal. The new cells add mostly to the small-diameter neuronal compartment. Evidence from neonatally operated rats indicates that the decline in the ratio of neurons in operated versus control DRGs following sciatic nerve section in the adult results more from a halt in the accretion of new neurons to the sciatic compartment than from frank cell death. From our data, we calculate that the loss of axotomized neurons occurs at a rate of only about 8% per 100 postoperative days. PMID- 3835671 TI - [Hygienic evaluation of food products with regard to the levels of harmful metals. I. Fruit and vegetable preserves and non-alcoholic beverages]. PMID- 3835670 TI - Early differentiation of the afferent nervous system in glabrous snout skin of the opossum (Monodelphis domesticus). AB - Early differentiation of afferent fibers innervating the snout skin of Monodelphis domesticus was studied by electron microscopy and by light microscopic silver staining techniques. This study was undertaken to investigate the relationship between dermal and epidermal innervation in the neonate opossum while correlating these findings with behavioral responses. The advantage of using this species is that the neonate is born in a very immature stage and has a rostrocaudal development of the peripheral nervous system. Glabrous snout skin from young opossums was studied at birth (0 day) and postnatal days 1, 3, and 5. Neurite bundles were seen within the dermis, with axons and growth cones approaching the epidermis. Some axons penetrated the dermal-epidermal junction in newborn pups. Merkel cells were consistently numerous during the time spanned by this study. Mature Merkel cells had granules polarized toward an associated neurite and were often located in the base of the rete pegs. Immature Merkel cells were characterized by a lack of polarization of granules and absence of an apposed neurite, suggesting that these cells can differentiate without an associated neurite. Contiguous Merkel cells had junctional complexes in 0- and 1 day animals. Schwann cells, identified by their contact with neurite bundles, were present in large numbers, especially in the superficial dermis. Melanocytes could be identified in the epidermis in 5-day pups only. Developing rete pegs could be recognized in 0-day animals and became prominent in 5-day pups. These observations suggest that afferent fibers are present at a very early age and that some of these fibers are anatomically mature. These findings support the concept that the ability of the neonate to locate a teat and suckle requires only the presence of mature epidermal innervation, while dermal receptors appear later during postpartum development. PMID- 3835672 TI - [The 1st detected cases of ochratoxin A residues in human blood in Poland]. PMID- 3835673 TI - [Changes in the levels of atmospheric air pollution by dust, sulfur dioxide, fluorides and nitrous oxide in Cracow 1968-1984]. PMID- 3835674 TI - [Effect of titanium phosphate, zirconium oxide and a mixture of ammonium phosphotungstenate with zirconium phosphate on the elimination of radioactive cesium from the bodies of rats]. PMID- 3835675 TI - [A device for the quantitative collection of samples of periphyton and sediment from the walls of water reservoirs]. PMID- 3835676 TI - [Measuring the migration of butylhydroxytoluene (BHT) from polystyrene and polypropylene into model fluids by the gas chromatography method]. PMID- 3835677 TI - [Changes in the psychophysical fitness of schoolchildren during a 5-day school week]. PMID- 3835678 TI - [Differences in body height and body weight of schoolchildren in various regions of the country]. PMID- 3835679 TI - Pesticide residues in teas consumed in Poland. PMID- 3835680 TI - [Hygienic evaluation of food products with regard to the levels of harmful metals. II. Meat and dairy products, confectioneries and wines]. PMID- 3835681 TI - [Polychlorine compounds and metals in the muscle tissue of various species of Baltic Sea fishes, 1981-1983]. PMID- 3835682 TI - [Chemical contamination of the daily meals of selected population groups. II. Preliminary analysis of the levels of heavy metals, chlorinated hydrocarbons, Cs 137 and Sr-90 in the meals in selected nursery schools]. PMID- 3835683 TI - [The quality of nutrition in hospitals]. PMID- 3835684 TI - [Comparison of the physical development of children aged 6-15 years from urban and rural areas]. PMID- 3835685 TI - [A rapid spectrophotometric method for determining trace amounts of copper (II) in cosmetic raw materials and dyes]. PMID- 3835686 TI - [Pollution of atmospheric air and the air in living quarters with formaldehyde]. PMID- 3835687 TI - [Health examinations and their efficacy]. PMID- 3835688 TI - [Acute viral hepatitis: epidemiological study in the province of Santa Cruz de Tenerife]. PMID- 3835689 TI - [Health study of swimming pools in Madrid]. PMID- 3835690 TI - [Hepatitis B virus markers and evaluation of prevention in hospital personnel]. PMID- 3835691 TI - [Initiation of the smoking habit among the student population in Mostoles]. PMID- 3835692 TI - [Toxic Iberian Lepidoptera and a medical and health study of erucism]. PMID- 3835693 TI - The effect of acute non-fatal haemorrhage on adrenocortical function. AB - The effect of acute non-fatal haemorrhage on adrenocortical function was assessed in 19 Burmese subjects. The results indicated that acute non-fatal haemorrhage as produced by blood donation stimulated the adrenal cortex to increase its secretion. PMID- 3835694 TI - Purpura fulminans produced by Aeromonas hydrophila: a case report. AB - A case of purpura fulminans produced by Aeromonas hydrophila in a twelve year-old Thai boy was reported. The patient also had aplastic anemia which facilitated the severity of disease. He died despite appropriate antimicrobial therapy. PMID- 3835695 TI - Attempts to modify treatment of intestinal capillariasis. AB - Attempts to reduce the standard treatment of intestinal capillariasis of 200 mg mebendazole twice daily for 20 days were not successful. Two of 13 patients given mebendazole at single daily dosages of 500 mg per day for 16 days relapsed 3 to 6 months after treatment. Attempts to reduce the treatment to 14 days were even less satisfactory in that 4 of 8 patients treated experienced relapses 2 to 9 months later. Since intestinal capillariasis can be fatal it is recommended to continue the use of the standard schedule of 400 mg mebendazole daily for 20 days for new cases and 30 days for relapsed cases until a more effective drug is available. PMID- 3835696 TI - Enterobiasis among schoolchildren in Macao. AB - The prevalence of enterobiasis was investigated among 2,195 children in kindergarten and grade one of 12 Macao Catholic schools by a single modified Scotch tape swab. The overall infection rate was 31.5%; it ranged from 15.2% to 63.3% among schools and was higher in grade one. The prevalence was independent of sex but increased with age to a peak at 7 years; it was higher among children of lower social class and those born in Mainland China. The infection was more prevalent in the poor and congested parts of the city. The educational level of parents was a critical factor in the eradication of enterobiasis. The prevalence rate was not associated with the employment status of mother, family size, and sibling size. PMID- 3835697 TI - Evaluation of the effectiveness of permethrin and DDT impregnated bed-nets against Anopheles maculatus. AB - A laboratory evaluation of cotton and nylon bed-nets treated with permethrin and DDT was carried out by releasing blood-fed An. maculatus for 30 minutes in the treated net. Results show almost 100% mortality up to one year after treatment. A ten minute exposure on the outside of the net also gave similar results. Even after washing the nets continued to give very good results. A method of treating the nets is described. PMID- 3835698 TI - Rainfall, abundance of Aedes aegypti and dengue infection in Selangor, Malaysia. AB - An epidemio-meteorotropic analytical study of Selangor, in the Southwest coast of Peninsular Malaysia, examines the monthly incidence of dengue for the period 1973 1982 to assess possible quantitative association with the monthly rainfall. The relationships between rainfall, abundance of A. aegypti and dengue infection during 1982 in Jinjang, a dengue-prone area in Selangor, were also examined. A quantitative association between rainfall and the number of dengue cases was found during the first wet period. The lag time between the onset of heavy rain and dengue outbreak was about two to three months. A 120% increase in the number of dengue cases was observed when the monthly rainfall was 300 mm or more. Positive associations were seen between the incidence of dengue and the Aedes house index and the Breteau index in Jinjang. The relationships between these three variables and rainfall suggest that the latter might have exerted its effect on dengue infection partly through the creation of more breeding sites for A. aegypti. Assessment of the importance of A. aegypti in the transmission of dengue in this locality was not possible because of the lack of adjustment for A. albopictus, the other known vector of dengue in the state, and for social and other environmental factors influencing infection rates. In spite of this and the interpretational problems common in aggregate studies, the present analyses have provided relatively strong statistical evidence of an association between rainfall and dengue outbreaks in Selangor, thereby indicating that it is a factor worthy of careful surveillance and monitoring. PMID- 3835699 TI - Epidemiology of cancer in Southeast Asia. PMID- 3835700 TI - Epidemiology of cancer in Sarawak, East Malaysia. AB - A descriptive epidemiology of cancer in Sarawak, based on histopathology records in the Central Medical Laboratory, Kuching, Sarawsk, in 1981 and 1982 was presented. There were 8,219 patients from whom biopsies were taken and 485 from whom marrow biopsies were taken. Out of these, 1,326 were reported malignant. Most of the cases were from Kuching. There were slightly more males than females. The Chinese formed the majority of cases followed by the Sea Dayaks and Malays. The most common cancer sites among males were lymph nodes, nasopharynx, skin and stomach, while in the females the most common sites were the breast, cervix and lymph nodes. Among the Chinese the most common cancers were those of the nasopharynx in males, and breast in females. Among the Sea Dayaks, the most common cancers were those of the lymph nodes in males and cervix in females. Among the Malays, skin cancers were relatively common, and among the Land Dayaks nasopharyngeal cancers were common. Most of the patients were in the older age groups. The pattern of cancers has not changed much since 1966 and the findings of the present study are very similar to the series from the Institute of Medical Research, Kuala Lumpur, in 1969 to 1971. PMID- 3835701 TI - Epidemiology of cancer in Malaysia. AB - Some information on cancer in Malaysia are available, and its epidemiology is described. There is a need for systematic and coordinated collection of cancer statistics which are essential to patient management, cancer control programme formulation, implementation and evaluation. The decision of the Ministry of Health to introduce National Cancer Registry and to encourage epidemiological studies, which will ultimately lead to the utilization of data and introduction of control and preventive activities for cancers are positive steps in the right direction. Meanwhile, curative and palliative treatment is available from the existing hospital facilities, and preventive activities such as actions on smoking and health will be continued until such time when a comprehensive prevention and control programme for cancers in the country is evolved. PMID- 3835702 TI - Epidemiological aspects of some malignant neoplasms in Indonesia. AB - Compared with 20 years ago, the problem of cancer is now on the increase in Indonesia. Cancer as the cause of death in various hospitals in Indonesia ranked No. 7 after infectious diseases, accidents and cardiac diseases. Cancer of the cervix uteri and breast were the most frequent cancer found in females throughout Indonesia, except in Padang (West Sumatra). The highest frequency of cervical cancer was found in Bali (34.0%). For both sexes together, skin cancer has been found to be the 3rd ranking after cancer of the cervix uteri and breast. Nasopharyngeal cancer, and cancer of the liver have been found high ranking among males, and from the reported data from 1981 and before, there has been almost no changes observed in the ranking of cancers among females. PMID- 3835704 TI - Squamous cell carcinoma of the oral mucosa in Malaysia--any change? AB - The prevalence rate of 749 cases of oral squamous cell carcinomas (SCC) recorded between 1978-1984 was studied. Results showed that the Indians formed the dominant group (63.8%) followed by the Malays (19.6%) and Chinese (16.6%). The peak incidences were generally located between the sixth and eighth decades. Only in the Chinese group a male preponderance was noted. In the Indians, the buccal mucosa was the most prevalent site; in the Malays and Chinese males, the gingiva and alveolus; and the Chinese female, the tongue. In all three groups, the well differentiated SCC was the commonest type and the poorly differentiated least common. PMID- 3835703 TI - Cancer registration in Thailand. AB - Review from the history of the Cancer Registration in Thailand during 1971-1980, shows that the patterns of cancer incidence are less different even if the data NCI received each year was not stable at the first stage of conducting this work (during 1971-1974) i.e., collaboration increased in some years and decreased in some years. Since 1975, the cooperation has been increasing, especially data from provincial hospitals but the cooperation from hospitals in Bangkok is still less due to problems such as lack of personnel who is directly in charge of this work, or problems on routine work system on cancer registration. However, data and statistics on cancer of Thailand which NCI has performed forms the base data for incidence of various types of cancer. PMID- 3835705 TI - Experience with gastroscopy in the diagnosis of stomach cancer in Malaysia. AB - Two hundred and eight patients underwent oesophago-gastro-duodenoscopy within the first year of its introduction at a peripheral general hospital in Malaysia. There were 7 cases of gastric cancer, proved histologically, as compared to 38 cases of benign gastric ulcer. The frequencies of the common symptoms and signs in the two conditions are compared. Of the 3 main ethnic groups, Malays, Chinese and Indians, the incidence of gastric ulcer was highest among the Chinese, next the Indians; however, the number of gastric cancers were too few for analysis of its racial incidence. PMID- 3835706 TI - Nasopharyngeal carcinoma: correlation of histopathology with radiation response. AB - Forty-nine cases of NPC were evaluated histopathologically and the radiation responses of the tumor types were assessed. The overall radiation response were as follows: CR 40.8%, PR 14.3%, NC 42.9%, PD 2.0%. The distribution of tumor types were: Squamous cell carcinoma (WHO type I) 4.08%; Non-keratinizing carcinoma (WHO type II) 4.08%; Undifferentiated carcinoma (WHO type III) 91.84% var. Lympho-epitheliomatous (LE), Anaplastic (A), Spindle cell (SC), Clear cell (CC). 94.38% of the cases were classified as clinical stage II, III and IV (tumor found beyond the nasopharyngeal space). The radiation response rate of the tumor in the lymphnode was reversed to the clinical stage and extent of node involvement, namely the higher stage and node involvement, the less rate of radiation response. Twelve cases received radiation dose of less than 4000 cGy, which comprised 11 NC cases and 1 PD case. Of the 37 cases who got 4000 cGy and over, the response rate was 72.97%. Of these WHO type I was not evaluated because of insufficient radiation dose; WHO type II showed 50% response rate; WHO type III showed 74.29% response rate. Radiation response (as assessed from the cervical lymphnode involvement) of NPC was influenced by tumor burden and histologic type of the tumor, namely the less differentiated tumor responded better than the more differentiated one. No definite conclusion can be drawn yet of the different behaviour (if any) of the variants of undifferentiated carcinoma (WHO type III) toward irradiation. PMID- 3835707 TI - Current status of chemotherapy for esophagus and gastric cancer. PMID- 3835708 TI - Chemotherapy and hormone therapy of metastatic breast cancer. PMID- 3835709 TI - Early diagnosis of cancer of the lung. PMID- 3835711 TI - Relative frequency of cancer in the female genital tract in Indonesia. AB - In a 10-year period (1970-1979) 6,111 cancer cases in males and 7,646 cases (55.3%) in females were registered. The female genital tract cancers occurred in 23.8% of all malignancies in the female. The relative frequency of the gynecological tumors was: cervix 60.3%, ovarium 25.5%, corpus uteri 6.9%, chorioca 5.1% and vulva/vagina 2.2%. A comparison is made with former reports and with other places in Indonesia. PMID- 3835710 TI - Chemotherapy of advanced non-small cell lung cancer with the use of cis-platinum and VP 16-213. AB - Twenty eight patients (22 males, 6 females), with mean age of 55 years (range 34 71 years) were given combination chemotherapy consisting of Cis-platinum and VP 16-213 (Etoposide). The schedule was Cis-platinum, 20 mg/m2 and VP 16-213, 60 mg/m2, each given for 5 consecutive days and repeated every 4 weeks. Histological subgroups were adenocarcinoma 15, squamous cell carcinoma 9 and large cell carcinoma 4. Prior therapy was radiotherapy in 2 and no treatment in 15 patients. The ECOG performance status was 0-1 in 9 patients and 2-3 in 9 patients. Eight patients had limited disease and 20 had extensive disease. Nine of 28 patients responded, 1 CR and 8 PR's, with an overall response rate of 32%. The median duration of response was 23 weeks. Response rates according to histologic types were similar. Important prognostic factors for response were performance status, stage of the diseases and age below 55 years. Median survival was significantly longer for patients with limited disease vs extensive disease (41 vs 22.5 weeks) and in responders vs non-responders (42 vs 22 weeks). Toxicity was tolerable. This regimen is recommended for subsets of patients with the above prognostic factors. PMID- 3835712 TI - Challenge of the two neural tumors: neuroblastoma and retinoblastoma. AB - Fifty cases of neuroblastoma and 29 retinoblastoma patients who had additional chemotherapy were analyzed retrospectively. Male:Female ratio were 1:1 and 0.8:1, the ages ranged from birth to 14 years (4 +/- 3.42 year) for neuroblastoma, and one month to 5.5 years (2.4 +/- 1.4 year) for retinoblastoma. More than 70%-90% of them came in advanced stages. The treatment consisted of surgical resection, enucleation or exenteration if feasible. Radiation therapy and chemotherapy were given as specific and palliative measures. All of the neuroblastoma who were younger than 8 months old survived long-term. Various chemotherapeutic agents did not seem to effect the outcome of the advanced cases of these two diseases. The retinoblasts did not seem to be sensitive to MTX and Ara-C. Thio-tepa intrathecally seems to be worth trying. Since these two tumors are not sensitive to treatment and are still a great challenge to the developed countries, awareness of the diseases, early diagnosis and early treatment are appropriate approaches for the developing countries. PMID- 3835713 TI - Rhabdomyosarcoma in Thai children. AB - Twenty-six cases of rhabdomyosarcoma diagnosed from a total of 845 Thai children with childhood malignancy who had been treated at the Department of Pediatrics Ramathibodi Hospital, from May 1970 to December 1982 were analyzed retrospectively. There were 16 boys and 10 girls, aged 3 months to 13 years old (mean age was 5.6 +/- 4.1 years old). The common type was the embryonal cell sarcoma (19 cases), 3 cases were undetermined, 2 cases of alveolar cell type and one each of the pleomorphic and undifferentiated cell type. Only 2 cases had stage II disease, 10 and 14 cases were stage III and IV respectively. The common locations were head and neck (10 cases), abdomen (8 cases including one in the uterus, scrotum and 3 in the urinary bladder), and in 7 cases in the extremities. One patient had small lesion at the buttock. The treatment consisted of surgery, radiation therapy, actinomycin, vincristine and cyclophosphamide. Eight cases were lost to follow-up, 10 cases were discharged in advanced stage after been treated for 6.2 +/- 4 months, 4 cases had no evidence of disease for 2 to 7.5 years, 4 cases died after 4 to 27 months of treatment. The poor result obtained was probably due to the late stages of the disease at diagnosis, and limitations in the use of effective medications. PMID- 3835714 TI - [Visual evoked potentials in families with Friedreich's ataxia]. PMID- 3835715 TI - [Detection of corrosion of the copper wire in the Biocuprum intrauterine device]. PMID- 3835716 TI - [Bicycling injuries in the geriatric population]. PMID- 3835717 TI - [Multiple malignant tumors]. PMID- 3835718 TI - ["Uncinate crises" in patients with tumors in the frontotemporal region]. PMID- 3835720 TI - [Radiographic classification of pneumoconiosis]. PMID- 3835719 TI - [Cholesterol polyps of the gallbladder]. PMID- 3835721 TI - [Dizziness as a medical problem]. PMID- 3835722 TI - [The contents of the esophageal hiatus]. PMID- 3835723 TI - [Anatomic characteristics of the left testicular vein]. PMID- 3835724 TI - [The incidence of non-Hodgkin's lymphoma on the basis of modern histologic classification]. PMID- 3835725 TI - [Alloreactive lymphocytotoxic antibodies in patients with multiple transfusions and on a chronic hemodialysis program]. PMID- 3835726 TI - [Post-traumatic gastroduodenal ulceration]. PMID- 3835727 TI - [Evaluation of the reliability of commercial equipment for the radioimmunologic determination of the concentration of carcinoembryonic antigen (CEA)]. PMID- 3835728 TI - Effects of an anabolic steroid on reproduction in female rats. AB - Mature female rats given food and water ad libitum and maintained under a lighting schedule of 12h light/12h dark were treated with boldenone undecylenate. Neither dosage nor duration of treatment had a significant effect on weight gain when compared to controls. All treated females were characterized by the absence of cyclic ovarian activity that continued for several weeks following termination of treatment. Long term reproductive performance was altered by a significant reduction in both conception rate and neonatal survival. Behavioral patterns were modified for several months following steroid withdrawal. PMID- 3835729 TI - The production and assessment of monoclonal antibodies to cortisol. AB - In an extensive series of experiments, Balb/C mice and Lou rats were immunised with 3-O-(carboxymethyl)oximinocortisol conjugated to bovine serum albumin. The spleen cells from selected animals were fused with cells from mouse or rat plasmacytoma lines. Out of many hundreds of hybridomas screened, more than seventy produced antibody that bound 125I-labeled cortisol. These cultures were investigated further for stability of antibody production, affinity for cortisol and cross-reactivity with other steroids. An unexpected but consistent finding was that immunised rats produced antibody which cross-reacted with 11 deoxycortisol to a level greater than 100% and this characteristic was reproduced by rat-rat hybridomas. Strategies designed to improve the chances of generating non-cross-reactive anti-cortisol monoclonal antibodies did not appear to be successful. Nevertheless, several monoclonals were identified with properties that suggest they may be useful for the development of sensitive and specific cortisol assays. PMID- 3835730 TI - Rat luminal cell nuclear area changes correlated with uterine growth responses induced by a low dose infusion or injection of estradiol-17 beta. AB - Rat uterine luminal epithelial cells (LEC) responded differently when exposed to an injection of 1.0 microgram estradiol-17 beta (E2) compared to a continuous infusion of E2 at the rate of 1.0 microgram/24 hours. After injection or beginning infusion, LEC mean nuclear area significantly decreased by 4 h, then increased thereafter. After injection, nuclear area distributions were determined at each time point. The percentage of large nuclei (greater than 40 mu 2) decreased by 4h postinjection and remained a relatively small proportion of the population, while the percentage of nuclei of 20-30 mu 2 areas increased throughout the experiment. During infusion, the percentage of large nuclei decreased by 4h after pump implantation, then increased. Only infusion induced sustained, increased uterine protein content, DNA synthesis and ornithine decarboxylase activity. This study suggests that E2 treatment modality induces differences in nuclear size in target cells as well as in biochemical parameters. PMID- 3835731 TI - A convenient isomerization of 6-oxo-3 alpha,5-cyclo-5 alpha-steroids to 6-oxo delta 2-5 alpha-steroids. AB - Direct isomerization of 6-oxo-3 alpha,5-cyclo-5 alpha-steroids to 6-oxo-delta 2-5 alpha-steroids was accomplished by pyridinium hydrobromide in dimethyl-formamide. PMID- 3835732 TI - A new partition thin-layer chromatographic method for steroid separations. AB - TLC plates with a 25 mu thick polyamide stationary phase were modified for the separation of neutral steroids by impregnation with propylene glycol. A mixture of tritiated 5 alpha-androstan-3 alpha,17 beta-diol, testosterone, 17 beta hydroxy-5 alpha-androstan-3-one and 4-androstene-3,17-dione was applied to the plate and developed in a toluene mobile phase to a height of 13.6 cm. This resulted in complete resolution of the 4 compounds as detected by a gas flow scanner or imaging analyzer. Cutting and elution of peak areas with methanol resulted in quantitative recovery of all four steroids. The thinness of the layer also permitted a 3-5% counting efficiency on scanning, resulting in good quantitation of recovery without liquid scintillation counting. The high sorptive capacity of the polyamide layer also enabled extracts of normal human serum to be defatted on the TLC plate by development with pure hexane prior to the toluene step. The new method thus offers several advantages over existing methods for steroid separations and should be adaptable to separations of other relatively non-polar compounds. PMID- 3835733 TI - [Late thromboembolic complications after mitral valve replacement]. PMID- 3835734 TI - [Comparative study of 2 therapeutic regimens using fractionated doses of insulin in insulin-dependent diabetics]. PMID- 3835735 TI - [Sheehan's syndrome: epidemiologic, clinical and biological aspects. Apropos of 36 cases]. PMID- 3835736 TI - [Caustic esophagitis: diagnostic and therapeutic considerations. Apropos of 16 cases]. PMID- 3835737 TI - [Electrical aspects of paroxysmal crises in newborn infants]. PMID- 3835738 TI - [Primary tumors of the small intestine. Apropos of 16 cases from 1978 to 1984]. PMID- 3835739 TI - [Tuberculosis contagion. Results of a personalized epidemiologic study]. PMID- 3835740 TI - [Serum gastrin in normal subjects and ulcer patients]. PMID- 3835741 TI - [The Leopard syndrome or multiple lentigines syndrome]. PMID- 3835742 TI - ["Textile lung". Apropos of the first Tunisian case of linen pneumoconiosis]. PMID- 3835743 TI - Regional sodium citrate anticoagulation in patients with active bleeding undergoing hemodialysis. AB - Sodium citrate was used as a regional anticoagulant in the dialysis system in four patients with acute renal failure and active bleeding of various sources during a total of 38 dialysis treatments. All four patients had exacerbation of existing hemorrhage with low-dose heparin dialysis. A special circuit was used through which sodium citrate was infused into the arterial sleeve of the dialysis blood line; dialysis was achieved against calcium-free bath and calcium was infused into the venous sleeve of the dialysis blood line. When data was compared to low-dose heparin dialysis, citrate anticoagulation is as effective, carries no risk of exacerbation of bleeding, and had negligible adverse effects. PMID- 3835744 TI - Perirectal and perineal infections in end-stage renal disease patients. AB - Eight patients with end-stage renal disease (ESRD) who developed bacterial infection of the perirectal area or perineum are reported. The diagnosis was not always straightforward. Bacteremia was seen in 3 of 8 patients and one of these died. Careful examination of the anus, rectum, and perineum should be mandatory in ESRD patients with undiagnosed fever. Treatment consisted of extensive surgical debridement and drainage along with antimicrobial therapy. PMID- 3835745 TI - Serum copper concentration changes in chronic hemodialyzed patients. AB - We studied the behavior of copper during hemodialysis and the relationship between serum copper levels and hematologic parameters such as red blood cell count (RBC), hematocrit (Hct), hemoglobin (Hb), and serum iron in 48 hemodialyzed patients. To study diffusion, we measured copper in the arterial blood and in the dialysate at the inflow and outflow sites of the dialyzer. To study hemoconcentration, the change in hematocrit values and total serum protein values were examined. To study liberation of copper from the dialyzer membrane, copper concentrations in normal saline were measured before and after the saline was used to wash dialyzers of various kinds. We found that changes in serum copper concentration were due mainly to hemoconcentration and liberation, but partly also to diffusion, and that the net result of changes was a significant increase in serum copper. We observed no correlation between serum copper levels and RBC, Hct, Hb, and serum iron levels. PMID- 3835746 TI - Lock-ring for Tenckhoff catheter/titanium adaptor junction. AB - One standard continuous ambulatory peritoneal dialysis (CAPD) infusion/drainage system was found prone to recurrent mechanical failure at the junction between the silastic catheter and the titanium connector. This resulted in slackening and eventual disconnection with attendant risk of bacterial entry and a CAPD associated peritonitis. A simple "lock-ring" device, when fitted over the catheter-titanium connector junction, afforded a secure joint. PMID- 3835747 TI - National policies for health library networks. PMID- 3835748 TI - Targeting on health for all. PMID- 3835749 TI - [Glycoprotein synthesis in spermatids of the rat--an EM radioautographic study]. PMID- 3835750 TI - [Hybrids between F9 "nullipotent" teratocarcinoma and rat thymus cells produce differentiated cells]. PMID- 3835751 TI - [Effect of adherent cells and conditioned medium of long-term canine bone marrow culture on granulocyte/macrophage progenitor cells]. PMID- 3835752 TI - Double label radioactivity per cell (RC) analysis in vivo: rapid cytokinetic analysis of the KHT sarcoma. PMID- 3835753 TI - [Influence of the in vivo microenvironment on the differentiation of cloned B7-2 embryonal carcinoma cells]. PMID- 3835754 TI - [Studies on the appearance and disappearance of conductivity of embryonic epithelium with heterochronous transplantation]. PMID- 3835755 TI - [Different effects of cytochalasin B on the cell cycle of human fetal pulmonary diploid SL7 cell, human neoplastic LTEP-78 and CNE cells]. PMID- 3835756 TI - [The ionic dependence of the action potential of the epithelial cells of embryos of Cynops orientalis]. PMID- 3835758 TI - [Effects of butyric acid on cultured human nasopharyngeal epithelial carcinoma cells]. PMID- 3835757 TI - [Release of LDL from cell surface receptor by heparin and comparison of the binding ability of serum LDL between rabbit and man]. PMID- 3835759 TI - [A scanning electron microscopical study of the corneal epithelium during the morphogenesis of the eye in Bufo raddei]. PMID- 3835760 TI - [Mutagenic effect of methylbenzylnitrosamine on V79 cells co-cultivated with hepatocytes or esophageal epithelial cells of human, rat and chicken origins]. PMID- 3835761 TI - Benign recurrent intrahepatic cholestasis (Summerskill and Walshe syndrome). Case report and revision of bibliography. AB - We describe the case of a 58-year old woman who had four episodes of choluric jaundice and severe pruritus, starting at age 48. Each episode lasted about four months and had a spontaneous remission. During icteric episodes, conjugated bilirubinemia, alkaline phosphatase, and to a lower degree transaminases, were increased; white cell count was higher and there was a marked rise in sedimentation rate. Between such episodes there was a complete clinical remission, and laboratory alterations returned to normal, although sometimes a high alkaline phosphatase persisted. There was no history of previous drug intake known to produce these disorders. During the last icteric episode, an exploratory laparatomy, with roentgenographic study was done, which demonstrated that the extrahepatic biliary tract was intact. Histology revealed that the liver showed a preserved, regular architecture, of which the salient feature was intrahepatic cholestasis. Corticoids and cholestyramine were of little benefit for pruritus. PMID- 3835763 TI - [Dysplasia: myth and reality]. PMID- 3835764 TI - [Pyloric Campylobacter and esophago-gastroduodenal pathology]. PMID- 3835762 TI - [Acute cholecystitis and cancer of the gallbladder in the aged]. AB - We are reporting 35 cases of gallbladder cancer in elderly people. 9 of them (25.7%) were operated with the diagnosis of acute cholecystitis. We point out the high incidence of the association of acute cholecystitis and gallbladder cancer, being the cholelithiasis a predominant factor in the pathogenesis of cancer. Considering that we found gallbladder cancer in 6.1% of the cholecystectomies, we advise to perform the surgical treatment in all the patients suffering of cholelithiasis. PMID- 3835765 TI - [Diagnosis and etiology of Barrett esophagus. Presence of gastrin secreting cells (G cells)]. AB - We present the patterns for the diagnosis, checking the clinical, radiological, endoscopical and histological data of 35 patients suffering from Barrett's Esophagus (BE) (columnar metaplasia lining the lower esophagus). The clinical characteristics are those of a severe esophagitis of long evolution, although metaplasia itself is asymptomatic, and its features depend on the inflammation degree. Radiology can bring out some data as GE reflux, hiatal hernia, ulcers or stricture, and perhaps double contrast may show any sign by means of which endobrachyesophagus (EBE) can be suspected. Endoscopy provides us with accurate data about EBE, ulcers, stricture and inflammation. Histology reveals the type of columnar metaplasia (junctional or cardial, gastric fundic, intestinal or specialized, or composite). Acquired or congenital etiology can be clarified by an immunohistochemical method, Peroxidase anti-Peroxidase (PAP), showing the presence of gastrin secretory cells (G cells) in the congenital cases. PMID- 3835766 TI - [Hepatic manifestations in giardiasis]. AB - In 25 patients with diagnostic of Giardiasis by duodenal intubation we studied the hepatic functional tests and hepatic biopsy. 60% of patients presented alterations of hepatic histology; 36% steatosis and 24% inflammatory lesions, chronic persistent hepatitis 3 cases and chronic active hepatitis two of them. Hepatic lesions regression was reached only with antiparasitic treatment and in some cases reappearance of lesions depended on parasitic's reinfections. For every patient with histologic diagnosis of chronic hepatitis without viral markers we suggested to dismiss Giardiasis and to treat it before to undergo other therapeutical behavior. PMID- 3835767 TI - [Evaluation of the usefulness of various cytoenzymatic studies in the differential diagnosis of multiple myeloma and plasmacytic reaction of bone marrow]. PMID- 3835768 TI - [Evaluation of tartrate-resistant acid phosphatase activity in lymphoma cells of the bone marrow]. PMID- 3835769 TI - [Evaluation of the stability of lyophilized factor IX concentrate]. PMID- 3835770 TI - [Interaction of human prothrombin with staphylococcal coagulase produced by the Staphylococcus aureus Newman D2 strain]. PMID- 3835771 TI - [Components of the fibrinolytic system of Guerin's epithelioma]. PMID- 3835772 TI - [Non-homogeneity of maturity of cells of the granulocyte line from human bone marrow in in vivo culture in diffusion chambers]. PMID- 3835773 TI - Radionuclide ventriculography for assessing cardiac shock early after open-heart surgery. PMID- 3835774 TI - Cardiothoracic complications of centrally inserted catheters. PMID- 3835775 TI - Complications during therapeutic plasma exchange. PMID- 3835776 TI - Echocardiography in the perioperative period. PMID- 3835777 TI - Conjunctival oxygen tension in experimental and clinical conditions: tissue oxygen metabolism in hyperoxia, hypoxia and hemorrhagic shock. PMID- 3835778 TI - Combined effects of amantadine and interferon on influenza virus replication in chicken and human embryo trachea organ culture. AB - Amantadine (greater than or equal to 100 micrograms/ml) treatment of chicken or human trachea organ cultures 6 h before infection inhibited influenza virus replication. Chicken or human leukocyte IFN evoked antiviral resistance in the cells of the homologous organ cultures only at a concentration of 100 U/ml or more. Treatment of organ cultures with combinations of the two substances resulted in an additive effect on influenza virus replication in both chicken and human tissues. PMID- 3835779 TI - Effect of arginine-butyrate on interferon induction by adenovirus. AB - Treatment of human adenovirus type 12 infected chick cells with a low concentration of arginine-butyrate strongly inhibited interferon formation. At this concentration, as evaluated by the rate of protein synthesis the drug exerted no significant toxic effect on the cells. The early virus gene expression, not being affected in the butyrate-treated chick cells, it is autonomous and is not influenced by the effect of butyrate on chick cells. This is at variance with what has been observed in other semipermissive systems infected with adenovirus. PMID- 3835780 TI - Mutual spatial orientation of hexons in the adenovirus capsid by electron microscopy and modelling. AB - On the basis of electron microscopic analysis of the virion and model experiments there are four hexon species in the adenovirus capsid which have different positional status and spatial orientation as compared to the six nearest neighbouring capsomers. The binding pattern of the polypeptide subunits according to their orientation is also different. The four hexon species are situated beside one another in the capsid and they form the capsid of 240 hexons besides the penton by repeating symmetrically 60 times, as a group of four hexons (GOF). Electron microscopic analysis and model experiments lead to the conclusion that the mutual spatial orientation of GOF hexons can be parallel (their longitudinal axes are parallel), or the direction of their longitudinal axes is different in one or two planes, thus they form different angles with the longitudinal axes of the neighbouring hexons. In the latter cases therefore, a bend and torsion of the bindings (connective elements) can be supposed as compared to the tendency-plane of parallel bindings. Based on the different combinations of the three kinds of rotational orientation of polypeptide subunits and of the different spatial orientation of hexons, six kinds of interhexonal bindings can be found in the adenovirus capsid. The distribution and characteristics of the 690 interhexonal bindings are the following; 240 bindings of "one-to-two" polypeptide orientation with parallel spatial orientation; 180 bindings of "one-to-two" polypeptide with spatial orientation divergent in two planes; 30 bindings of "one-to-one" polypeptide orientation with parallel spatial orientation; 60 bindings of "one-to one" polypeptide orientation with spatial orientations divergent in one plane; 60 bindings of "one-to-one" polypeptide orientation with spatial orientation divergent in two planes; 120 bindings of "two-to-two" polypeptide orientation with spatial orientation divergent in two planes. The dissociational sequence of the capsid suggests that the firmest bindings are the ones having "one-to-two" polypeptide orientation and parallel spatial orientation. It may be supposed that any two hexons are able to connect to each other according to all three polypeptide orientations and the connections can tolerate the bends and torsions arising from the icosahedral structure. This suggests that only one kind of hexon is existing and the adenovirus capsid is formed by a homogeneous hexon population. PMID- 3835781 TI - [Synthesis of 3-(P-(omega-disubstituted aminoalkoxy)-benzoyl)-indole derivatives]. PMID- 3835782 TI - [The structure of dan-shen spiroketallactone of dan-shen (Salvia miltiorrhiza Bunge)]. PMID- 3835784 TI - [Morphological and histological studies on Chinese medicinal aconite roots, Bangga group and Niubian group]. PMID- 3835783 TI - [Studies on the fluorometric ion pair method for the determination of several tertiary amines]. PMID- 3835785 TI - [Synthesis of tri-substituted acetates]. PMID- 3835786 TI - [Studies on the chemical constituents of the root of Actinidia chinensis Planch]. PMID- 3835787 TI - [Ontogenetic chemical changes of the active constituents in mudan (Paeonia suffruticosa) and shaoyao (P. lactiflora]. PMID- 3835788 TI - [An experimental rat model of obesity and diabetes]. PMID- 3835789 TI - [Effect of low-activity heparin on the uptake of 125I-cholesterol by the aorta wall in the rabbit]. PMID- 3835790 TI - [Effect of praziquantel on the Ca2+, Mg2+, K+ and Na+ content and distribution of 45Ca2+ in male Schistosoma japonicum]. PMID- 3835791 TI - [Studies on drugs used for the treatment of hyperlipoproteinemia:synthesis of new aryloxyisobutyric acid derivatives]. PMID- 3835792 TI - [Structure determination of three new triterpenoids from Helicteres angustifolia Linn]. PMID- 3835793 TI - [Morphological and histological studies on the Chinese medicinal aconite roots of miscellaneous group]. PMID- 3835794 TI - [Antiarrhythmic effects of sinomenine hydrochloride]. PMID- 3835795 TI - [The effects of berbamine on the isolated guinea-pig atria]. PMID- 3835796 TI - [Hypoglycemic effect of the combined use of puerarin and aspirin in mice]. PMID- 3835797 TI - [Linear titration of weakly alkaline drugs]. PMID- 3835798 TI - [Separation of catecholamines by micro high-performance liquid chromatography with electrochemical detection]. PMID- 3835799 TI - [Evaluation of antimyocardial ischemia drugs]. PMID- 3835800 TI - [Pharmacological actions of "8204" on the cardiovascular system and bronchial smooth muscle]. PMID- 3835801 TI - [Study on the preparation and stability of solid dispersion of gossypol acetic acid-PVP and its spermicidal activity in vitro]. PMID- 3835802 TI - [Studies on a new type acid dye--xylene cyanol for the determination of amines]. PMID- 3835803 TI - [Study on the hydrolytic kinetics of aconitine]. PMID- 3835804 TI - Correlations between the pharmacological effects and the pharmacokinetic behaviour of tetraminol. AB - Tetraminol (trans-2-hydroxyethylamino-3-hydroxy-5,8-dimethoxy-1,2,3, 4 tetrahydronaphthalene hydrochloride) is a newly synthesized antihypotensive agent. Its pressor activity is accompanied by a compensatory slowing down of heart rate. Changes in plasma levels after intravenous administration of 1 and 2 mg/kg b.w. to rats and rabbits can be fitted to a two-compartment open pharmacokinetic model (previous communications). Experiments were carried out with simultaneous registration of effects on blood pressure (R1) and heart rate (R2). Mathematical treatment of data for R1 and R2 revealed that changes with time can be described by biexponential equations of the type: R1i = A1i.e a1it+B1i..e-a21t. Three different ways to correlate the data from the pharmacological and pharmacokinetic experiments were tried: 1) For the time interval during which the pharmacological response changes in the range Rimax- 20 to Rimax- 80% there exists a linear relationship with a high degree of statistical significance between the changes in the effects and plasma levels. 2) In the lambda 1-phase of the drug distribution there also exists a linear relationship between the effects and plasma levels. This is so because Tetraminol exhibits its pressor effect by direct stimulation of alpha-adrenergic receptors in the walls of the peripheral blood vessels. 3) Most suitable for expressing the relationship which exists between the pharmacological effects and the plasma concentration of Tetraminol for the entire time interval is the nonlinear function of the type: Ri/(Rimax - Ri) = QiCsi. PMID- 3835805 TI - Effect of heavy metal salts on rat brain and liver monoamine oxidase activity. AB - In experiments on male Wistar albino rats was studied the effect of Co, Cd, Ni, Zn, Hg and Pb on the activity of rat liver and brain monoamine oxidase (MAO) using tyramine, serotonin and beta-phenylethylamine as substrates. It was established that ZnSO4 significantly increased the activity of liver MAO with all substrates studied, Co(NO3)2 increased it when tyramine and serotonin were used while NiSO4 increased MAO activity when serotonin was used as a substrate. All metals studied did not change MAO activity in the brain except for Co(NO3)2 which significantly increased the enzyme activity with tyramine as a substrate. The activity of liver MAO proved to be more susceptible to heavy metals after subchronic exposure than that in the whole brain. PMID- 3835806 TI - Relations between the shapes of different muscle potentials. Experimental and model investigations. AB - Intracellular muscle action potentials, the corresponding to them extracellular action potentials recorded at short and long radial distances, extraterritorial motor unit potentials, evoked muscle potentials (M-, H- and T-potentials) and averaged potentials of the summated electromyogram were studied experimentally and compared with the calculated potentials. The similarity in the shape of the different muscle potentials and some second-rate differences were explained taking into account the point of recording, the different degree of desynchronization of the summated potentials and some other factors. PMID- 3835807 TI - Is the Mmax/Hmax ratio a reliable index of the monosynaptic excitability in man? Recruitment curves for H- and M-responses using monopolar and bipolar recording techniques. AB - The amplitude changes of M- and H-potentials, recorded monopolarly and bipolarly from different leading-off areas on the surface of m. triceps surae upon varying the stimulus intensity from threshold to supramaximal values, in a state of rest and fixed muscle length, are investigated. It is shown that: a) the Mmax/Hmax amplitude ratio cannot serve as a reliable index for a quantitative evaluation of the monosynaptic reflex excitability of the motoneurone pool and b) recording along the medial line of m. soleus in the region from 1.5 to 8.0 cm under the distal insertion of the two gastrocnemii into the Achilles tendon in a state of rest and submaximal values of the stimulus intensity, both mono- and bipolar recording techniques can equivalently be used in studying the changes in the monosynaptic reflex excitability. PMID- 3835808 TI - Hemispheric asymmetry in visual perception of temporal order. AB - The perception of temporal order is investigated. Suitable localization of the signals is also used to study the functional asymmetry of the cerebral hemispheres during perception of temporal order. The experimental data obtained correlate well with earlier assumptions of ours, namely: (a) separate mechanism for perception of temporal order; (b) the right hemisphere is dominant for perception of the order of events in time; (e) dependence of the subjective threshold for ordering of events in time on different physical characteristics of the stimuli. PMID- 3835809 TI - Effect of estradiol on DNA and protein synthesis in rat liver in vivo. AB - The article studies the effect of 17, beta-estradiol on the binding of cytosol estradiol-receptor complex with chromatin isolated from the liver of female albino rats (sham-operated, ovariectomized and treated after the ovariectomy with 20 micron hormone/100 g body weight for 11 days) and sexually mature male albino rats. Higher binding of the complex is found for the female animals compared with the males. Parallel experiments are made to study the incorporation of 3H thymidine and 14C-glycine in vivo, in acid-soluble and acid-insoluble liver fractions of female rats, respectively, which is used as a basis for assessing the rate of DNA and protein synthesis. Ovariectomy induces considerable reduction of the binding of the estradiol-receptor complex with chromatin, as well as of the DNA and protein synthesis. Hormonal treatment of the ovariectomized rats is followed by substantial increase in the parameters investigated above the level measured in intact animals. The observed effects of the hormone on the liver correspond to the accepted view concerning the action of steroid sex hormones on their target organs. PMID- 3835811 TI - [Synthesis of new derivatives of pyrazole and pyrazolo[3,4-d]pyrimidine]. PMID- 3835810 TI - [Derivatives of 1,1-dioxo-1,4,2-benzodithiazine. VII. Various possibilities of using 6-chloro-3-methylthio-7-methyl-1,1-dioxo-1,4,2-benzodithiazine for the synthesis of 2-(4-chloro-2-mercapto-5-methylbenzenesulfonamido)imidazoline derivatives, and their pharmacological properties]. PMID- 3835812 TI - [Synthesis and preliminary pharmacological studies of new derivatives of 2-(4 isobutylphenyl)propionic acid (brufen)]. PMID- 3835813 TI - [Education and research on mental health in Latin America: priorities and implementation]. AB - This paper is based on a presentation delivered at a PAHO Regional Meeting on Mental Health. It focuses mainly on research issues and is to be considered as a preliminary prospective exercise. From a biomedical perspective, research in Latin America appears to be limited, but it is not clear to what extent. Costly technology, and scarce funding, together with the assumption that this type of research is a privilege of rich countries, are serious disadvantages, and yet, it need to be further promoted. Methodology of clinical and social research has grown in complexity. That is likely to be one of the reasons why local efforts are rarely internationally competitive. But there are groups in the Region that have shown that this can be achieved. Training of competent investigators and innovative means to shorten the scientific and technologic gap that separate us from developed countries are urgent, as Latin America has the potential to do better in research. PMID- 3835814 TI - [Analytic therapy by the wake-dream]. AB - The author goes through process of treatment by Robert Desoille's Wake-Dream analysis in an effort to expose the psychodynamics involved. In the first place, he approaches the problem of commencement of therapy up to the constitution of the framework inherent to the Wake-Dream. This presupposes a peculiar dissociation into several "me"; and a work method that may be thought of as progressive set up of a "personal mythology", through the various method stages, which in turn entails the task of binding and integrating every temporal and spatial dimension of psychism. The technique's therapeutic mechanics are based essentially in this work method. He also deals with the problem of transference and resistance and with the segregation of process phases just as they arise in medicine. On the basis of a text by Freud and of the aforementioned criteria, he supports the "analytical" nature of the Wake-Dream (in a sense similar to the term in psychoanalysis), in spite of the fact that the latter is not derived from psychoanalysis and is completely different from it as regards technique. Wake Dream and psychoanalysis are bradly coincident as far as theorical hypotheses supporting them are concerned. PMID- 3835815 TI - [Expectations of the patient's role]. AB - This study is part of a research on sociological aspects of the doctor-patient relationship. Some previous results have been already published. This paper aims to analyse the influence of some basic variables such as age, sex and socioeconomic level on normative expectations concerning to the patient's role. This role was defined in terms of Parsons' sociological theory, which provides the content of the 20 items of a Likert-type scale constructed by Kassebaum and Baumann. By means of a factorial analysis they discovered four underlying dimensions of the expectations of the patient's role: Dependence, Reciprocity, Role performance and Denial. This scale and a questionnaire built by the author were given to a sample group of 302 subjects, present or potential patients, inhabitants of Buenos Aires city. The results show that expectations of the patient's role are influenced mainly by the subject's socioeconomic level. PMID- 3835817 TI - Proceedings of the International Conference on Enzyme Pattern-Targeted Chemotherapy. Titisee, West Germany, May 2, 3 and 4, 1985. PMID- 3835816 TI - [Medical and sociocultural aspects of alcoholism in Chile, Colombia and Mexico (1)]. AB - The consumption of alcohol by the population becomes a theme of medical-social relevance in so far as the excessive or problematic habit of drinking alcohol leads to the syndrome of alcoholism and may affect substantially the mental health of the population. This paper tries to introduce the theoretical and practical study of the psychocultural development of the alcohol drinking behaviour, based on some exemplary cases of Chile, Columbia and Mexico, in Latin America. Essential themes are: Which kind of relations does exist between the socio-economic conditions and the alcohol consumption behaviour in each particular case? Which are the social and/or age groups with greater propensity towards problematic drinking habits? Which of the autochthnous cultural elements are available for preventive activities inside the community? PMID- 3835818 TI - L1210 dihydrofolate reductase: activation and enhancement of methotrexate sensitivity. AB - Dihydrofolate reductase, purified to homogeneity from a subline of L1210 murine leukemia cells resistant to 10(-6) M Methotrexate, was resolved into two principal forms (1 and 2) by isoelectric focusing. These forms had pI values of 7.4 and 8.2, respectively; both stained for protein and catalytic activity. Form 1 was a single component, comprising ca. 10% of the total protein, but multiple components of 2 were observed by narrowing the pH range in the electrophoretic procedure. Urea-denatured enzyme exhibited two bands of approximately equal intensity upon isoelectric focusing. These results were interpreted to mean that the enzyme consists of a set of conformationally different forms, arising from two primary structures. Inhibition of the native enzyme by Methotrexate was polyphasic, and appreciable activity remained when the drug was present at an equimolar concentration. Various agents (KCl, H+, urea, and SH-modifiers), known to "activate" dihydrofolate reductases, produced a monophasic, stoichiometric inhibition. Activating agents appear to induce a more open (and labile) conformation of the enzyme. This leads to increased affinity for MTX accompanied, in some instances, by increased catalytic activity. PMID- 3835819 TI - Potentiation of antimetabolite action by dibromodulcitol in cell culture. AB - The postulation that the activity of key enzymes that reveal marked increases should be potential targets for anticancer chemotherapy (47) was supported by new evidence on the alterations of CDP reductase, CTP synthetase and OMP decarboxylase in hepatoma 3924A cell cultures. Inhibitors of these enzymes (VF 122, acivicin, pyrazofurin) and that of IMP dehydrogenase (tiazofurin) efficiently killed hepatoma 3924A cells in culture, as demonstrated by the clonogenic assay. Acivicin, pyrazofurin, tiazofurin and VF-122 were lethal against tumor cells in the exponential phase of growth with IC50 of 1.5, 5, 10 and 4.5 microM, respectively. All these antimetabolites exhibited cytotoxicity preponderantly against exponential-phase cultures, indicating that all the four drugs belong to Class II (phase-specific agents) in the Kinetic Classification of Anticancer Agents (38). Dibromodulcitol, a bifunctional alkylating agent, revealed cycle-specific cytotoxicity (Class III agent) against hepatoma 3924A, yielding IC50 values of 2.3 and 5.5 microM for exponentially and stationary growing cells, respectively. Using isobologram analysis on the survival data of 3924A cells, synergistic interaction was observed when DBD in combination with acivicin, pyrazofurin and tiazofurin was examined. DBD in combination with VF-122 exhibited additive lethality against hepatoma cells in culture. The synergistic and additive cytotoxicity in combinations of DBD with these antimetabolites was accompanied by the concurrent depletion of ribonucleotide and/or deoxyribonucleotide pools. The synergistic biological results of drug combinations of acivicin with DBD can be accounted for by the action of acivicin in inhibiting CTP synthetase, resulting in a synergistic decrease in CTP content, and by inhibition of DNA synthesis caused by DBD. The synergistic and additive depletion of UTP, CTP, dTTP and dCTP pools in the combinations of DBD with pyrazofurin may be responsible for the synergistic lethality of these combinations. Synergism, in terms of pool depletion, was observed for GTP and dCTP; summation was detected for dGTP when DBD and tiazofurin were given concurrently. The synergistic cytotoxicity of this drug combination may be a consequence of these alterations. The additive lethality of DBD-VF-122 drug combinations was reflected in the additive elevations of the ribonucleoside diphosphate concentrations. These observations indicate that treatments based on the Kinetic Classification and on the biochemical targeting of the drug should have an impact on the design of in vivo chemotherapy. PMID- 3835820 TI - Inactivation by acivicin of rat brain CTP and GMP synthetases and depression of CTP and GTP concentrations. AB - Evidence was provided that injection of acivicin (25 mg/kg, i.p.) into the rat inactivated brain CTP and GMP synthetases. Under the same circumstances, CTP and GTP concentrations in the rat brain decreased following the decline in the activities of CTP and GMP synthetases. The decrease in enzymic activities and nucleotide concentrations progressed with time. The decline in CTP and GMP synthetase activities and CTP and GTP concentrations caused by acivicin occurred more slowly and to a lesser extent than in liver and hepatoma 3924A. The delay in the expression of acivicin action in the rat brain was attributed to a possible slower entrance of acivicin and the lower concentration than might have been attained in the rat brain. These considerations are based on the rapid disappearance of acivicin from rat plasma noted earlier. The decline in CTP concentration in rat brain might interfere with neuronal function. The decline in GTP concentration might be expressed through the depletion of biopterins which are generated from GTP in the brain. The possible relevance to the biochemical basis of paranoid schizophrenia which occurs reversibly after high-dose acivicin or tiazofurin treatment was discussed. PMID- 3835821 TI - The glutamine analog acivicin as antipyrimidine. Studies on the interrelationship between pyrimidine and urea synthesis in liver. AB - The inhibition of cytosolic carbamoyl-phosphate synthetase II by acivicin was used to study the role of the cytosolic carbamoyl phosphate pool as the exclusive substrate source for de novo pyrimidine synthesis in rat hepatocytes. De novo pyrimidine synthesis was stimulated: 1. by uridine triphosphate deficiency (incubation with D-galactosamine) leading to a stimulation of cytosolic carbamoyl phosphate synthesis, and 2. by accumulation and efflux of mitochondrial carbamoyl phosphate (incubation with ammonium ions and L-norvaline). The stimulated orotate formation from cytosolic carbamoyl phosphate in UTP depleted cells was completely blocked by acivicin. It was not influenced by an inhibition of mitochondrial carbamoyl phosphate synthesis mediated by 4-pentenoate, since mitochondrial carbamoyl phosphate did not participate in cytosolic pyrimidine synthesis even in the presence of ammonium ion concentrations maintaining physiological rates of urea synthesis. An excess of ammonium ions led to an artificial accumulation and efflux of mitochondrial carbamoyl phosphate, which could be avoided by 4 pentenoate. The non-regulated stimulation of pyrimidine synthesis from surplus mitochondrial carbamoyl phosphate was not inhibited by acivicin. Utilization of mitochondrial carbamoyl phosphate for de novo pyrimidine synthesis presumably does not occur under physiological conditions because mitochondrial CP efflux depends on the accumulation of this metabolite in the mitochondria under experimental or pathological circumstances. Acivicin inhibition of CPS II thus cannot be bypassed by mitochondrial CP. It is suitable as inhibitor of the physiological de novo pyrimidine synthesis. PMID- 3835822 TI - Nucleotide and oligonucleotide derivatives as enzyme and nucleic acid targeted irreversible inhibitors. Biochemical aspects. AB - Sequence specific modification of nucleic acids with reactive oligonucleotide derivatives, complementary addressed modification, can provide an efficient approach for specific inactivation of certain cellular nucleic acids. In experiments with ascites tumor Krebs II cells and alkylating oligothymidylate derivatives it was found that alkylating oligonucleotide derivatives enter the living cell and modify complementary sequences in cellular nucleic acids with high efficiency. Complementary addressed modification of poly(A) sequences in cellular RNA with oligothymidylate derivatives was investigated in detail. The results of experiments on alkylation of cellular nucleic acids are consistent with complementary addressed modification of poly(A) sequences in cellular DNA. These results are supported by experiments on modification of chromatin DNA in which it was found that chromatin DNA interacts with oliogothymidylate derivatives more readily than the isolated double stranded DNA. It was found that alkylating oligonucleotide derivatives complementary to a sequence in immunoglobulin mRNA of MOPC 21 cells arrest the cellular immunoglobulin synthesis. Alkylating oligonucleotide derivatives complementary to RNAs of fowl plague virus inhibit virus multiplication in cell culture. PMID- 3835823 TI - Inhibitors of glycoprotein biosynthesis. AB - Altogether 30 different sugar analogues have been tested in a cell free system from rat liver or, in part, in freshly prepared hepatocytes. It is our aim to find suitable compounds which are able either to interfere with the metabolization of L-fucose, galactose and N-acetylmannosamine or, alternatively, to block the attachment of these sugars to the nascent oligosaccharide chain. 1 Methylfucoside inhibits the fucokinase by a competitive mode (Ki = 1.1 mmol/l). Both the fucokinase and fucose-1-phosphate pyrophosphorylase activity are impaired by Clobenoside, a chloro-containing glucofuranoside (Ki values between 5 to 10 mmol/l). In hepatocytes this inhibition leads to a drastic reduction of fucoprotein biosynthesis and secretion. 1-Methylenegalactose proved to be a promising competitive inhibitor of the galactokinase (Ki = 4.1 mmol/l), while the efficacy of 2-deoxy-2-fluoro-galactose and 6-deoxy-6-fluoro-galactose is less pronounced. Part of these sugar analogues could become a suitable tool in order to elucidate the biological significance of terminal and subterminal sugars. PMID- 3835825 TI - Biochemical mechanisms of resistance to tiazofurin. AB - The purpose of this investigation was to examine factors which regulate the reprogramming of gene expression in tumors responsible for resistance to tiazofurin. To study the resistance phenomenon drug-induced tumor lines were selected and examined for the mechanism of resistance. A comparison of the biochemical expression of resistance to tiazofurin in drug-induced resistant lines of hepatoma 3924A, leukemias L1210 and P388 revealed that the 3 lines expressed similar genetic alterations related to reduced TAD content, decreased NAD pyrophosphorylase activity and increased synthesis of guanylates from salvaging preformed guanine indicating that these 3 factors play an important role in the resistance to tiazofurin. Resistance was stable in the leukemia lines and did not require drug to maintain resistance. Hepatoma 3924A resistant line reverted to sensitive state in the absence of drug selection pressure. NAD pyrophosphorylase activity was substantially deleted in the tiazofurin resistant leukemia lines, but was only significantly decreased in the hepatoma resistant line. Extensive biochemical alterations including enhanced activity of IMP dehydrogenase, increased inosinate and guanylate pools, and reduced uptake of tiazofurin were found in the hepatoma line resistant to tiazofurin. To examine the applicability of these results to naturally sensitive and spontaneously resistant tumors, murine tumors were examined. In murine tumors, TAD accumulation, ratios of enzyme activities responsible for the synthesis and degradation of TAD, and the ratios of perturbation of inosinate and guanylate pools following tiazofurin challenge demonstrated significant correlation with the sensitive or resistant nature of the tumors. To extrapolate these observations to human tumor systems, cytotoxicity of tiazofurin and its metabolic effects were compared in 6 human lung cancer cell lines derived from cancer patients with small cell lung cancer (4 lines) and lung adenocarcinoma (2 lines). Cell lines exhibiting greater sensitivity to tiazofurin accumulated significantly larger amounts of TAD and showed significant reduction of guanylate pools following tiazofurin incubation. The activity of the enzyme responsible for the formation of TAD, NAD pyrophosphorylase, did not correlate with responsiveness to tiazofurin but the enzyme which hydrolyzes TAD, TADase, correlated positively with the status of resistance.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3835824 TI - Potentiation of antimetabolite action by uridylate trapping. AB - Uridylate-trapping analogs of D-galactose or D-glucose divert the uridylate moiety of UDPglucose and/or UTP to UDP-sugar analogs that accumulate while the pools of UTP and of related pyrimidine nucleotides are depleted. The uridylate trapping action of sugar analogs is determined by the enzyme pattern of the target tissue. D-Galactose analogs are preferentially metabolized by hepatoma cells and hepatocytes. TA3-mammary tumor cells are susceptible to the action of D glucosamine and other D-glucose analogs. A high rate of de novo pyrimidine synthesis and/or an active salvage of extracellular uridine compensate for the uridylate-trapping action of sugar analogs and prevent depletion of UTP pools. Accordingly, synergistic actions are induced by combining sugar analogs, such as D-galactosamine or D-glucosamine, with inhibitors of de novo pyrimidine synthesis, such as lapachol or 6-azauridine. Uridylate-trapping by D galactosamine, acting on hepatocytes, shifts the balance between uridine consumption and uridine release by the liver and results in a fall of uridine and cytidine concentrations in blood plasma (20). Cultured hepatocytes produce uridine and cytidine. Combination of 5-fluorouridine with sugar analogs results in the formation of fluorinated UDP-sugar analogs in hepatoma cells or in mammary tumor cells. Formation of FUDP-sugar analogs transiently removes intracellular FUTP, but FUDP can be released subsequently in glycosyltransferase reactions (22). Pretreatment of hepatoma cells or of TA3-mammary tumor cells with an uridylate-trapping sugar analog in combination with an inhibitor of de novo pyrimidine synthesis enhances the uptake of 5-fluorouridine, its incorporation into RNA, and its growth inhibitory effect. The chemotherapeutic action of 5 fluorouridine in rats and mice, carrying the AS-30D and the TA3 ascites tumor, respectively, is significantly improved by pretreatment with an amino sugar together with 6-azauridine. PMID- 3835826 TI - [Problems of drug therapy in pregnancy. Interference of drugs and hormones on the development of the central nervous system and behavior (bibliographic review)]. PMID- 3835827 TI - [Disseminated intravascular coagulation in obstetrics]. PMID- 3835828 TI - [Varices in pregnancy (an up-date)]. PMID- 3835829 TI - [Pregnancy in mastectomy patients]. PMID- 3835830 TI - [Cancer of the breast in pregnancy and the puerperium]. PMID- 3835832 TI - [Pregnancy in the adolescent: clinical and psychological aspects]. PMID- 3835831 TI - [Contraception and the desire for pregnancy in the adolescent]. PMID- 3835833 TI - [Pregnancy in the adolescent: clinical results of a retrospective study]. PMID- 3835834 TI - [Synthesis of fluorinated alkyl alpha-cyanoacrylates: setting an experimental procedure]. PMID- 3835835 TI - [Experimental infection of mice by entomopathogenic rickettsia: Rickettsiella grylli. Infestation by the intraperitoneal route. Acute phase]. PMID- 3835836 TI - [Cytostatic activity of Viscum cruciatum Sieber on cellular cultures. Acute toxicity]. PMID- 3835837 TI - [Antiaggregant action on human platelets of a series of asymmetric triazines]. PMID- 3835838 TI - [Cardiovascular effects of hyperoside extracted from hawthorn in anesthetized dogs]. PMID- 3835839 TI - [Action of glycerolformal on the cardiovascular system]. PMID- 3835840 TI - [Alkaloids of Neisosperma kilneri (F.V. Mueller) Fosbert and Sachet]. PMID- 3835841 TI - [Flavonoids of Glycoxylon huberi Ducke]. PMID- 3835842 TI - Netherlands Society for Microbiology. Meetings, 16 February 1984-14 November 1985. Abstracts. PMID- 3835843 TI - Synaptic effects elicited in the Retzius cells of the leech Hirudo medicinalis by stimulation of the segmental roots. AB - Electrical stimulation of the segmental roots of each ganglion of Hirudo medicinalis, elicits in both Retzius' cells inhibitory and excitatory effects. The IPSP and EPSP are chemical in nature, being dependent on the membrane potential, and suppressed by high Mg++. Selective inactivation of one RC shows that the responses of the contralateral RC are not due to electrotonic coupling between the two cells, but to synaptic actions impinging upon the membrane of both RCs. The two synaptic potentials appear to be mediated by two set of fibres with a different threshold to electrical stimulation. Their actions on the RCs appear to be polysynaptic on the basis of central latency. Simultaneous stimulation of two roots shows evidence for occlusion for IPSP and summation for EPSP, confirming the polysynaptic nature of the effects. The possible functional significance of the inhibitory and excitatory pathways, is discussed. PMID- 3835844 TI - Influences of neck vibration on lower limb extensor muscles in man. AB - The effects of neck vibration were studied in ten healthy subjects standing in unrestrained or restrained conditions. An involuntary slow and gradual displacement of the body axis associated with a subjective experience of forward tilt occurred during vibration of the dorsal surface of the neck. This effect was associated with a decreased tonic contration of the antigravitary lower limb musculature. The amplitude of the H-reflex from the soleus muscle, recorded at progressively increasing time interval after the onset of the vibratory stimulus, showed complex interactions: in particular, in unrestrained conditions an early inhibitory phase occurred at about 100 msec, followed by a short-lasting facilitatory phase between 150-300 msec and by a late long-lasting excitatory component which started 500-600 msec after the onset of vibratory stimulus. In restrained subjects, the late excitatory phase disappeared and was substituted by a delayed depression. In this instance, the short-lasting facilitatory phase appeared to be superimposed on a background of inhibition. The effects produced by the neck input on the H-reflex were attenuated during vibration of the dorsal muscolature at L4-L5. The mechanisms involved in the cervical control of posture and reflex movements following neck vibration are discussed. PMID- 3835845 TI - Morpho-functional effects of kainic acid injection into the cat's pulvinar lateralis posterior nucleus complex. AB - The histological, electroencephalographic, behavioral changes as well as the changes in the intensity threshold of stimulation necessary to induce contralateral turning were studied in 16 cats, in which kainic acid (KA) was injected locally into the pulvinar-lateralis posterior nucleus complex (P-LP). In 13 cats a stainless-steel tube with two attached electrodes was implanted in P LP, and electrodes were also implanted in the ipsilateral dorsal hippocampus, the superior colliculus and the caudate nucleus. KA was injected through the tube using a 10 microliters Hamilton syringe. In other 3 cats, KA was injected stereotaxically through the needle of the Hamilton syringe and two electrodes were implanted in these areas after withdrawal of the syringe. The intensity thresholds of stimulation required to induce turning behavior were controlled before and after KA administration in the 13 cats with an implanted tube and only after KA injections in the three cats without a tube; in these instances the current threshold of the contralateral P-LP served as control. The histological results showed a moderate KA damage of the P-LP, with destruction of neuronal soma and gliosis and additional involvement, in all the experiments, of the dorsal hippocampus; however, passage fibers were spared by the lesions. A dose dependent epileptic effect of KA was seen, which was slight with the 3 micrograms dose and intense with 6 micrograms. The EEG recording showed a prominent and almost simultaneous epileptic involvement of the hippocampus and the P-LP after KA, with less involvement of the other implanted structures. Turning behavior induced by electrical stimulation of the P-LP was suppressed when the electrode tip was located inside the lesioned area. When the electrode tip was placed inside a slight or moderate damaged tissue, a significative increase in current threshold was found, and finally when the tip of the electrode was outside the lesioned area no change in threshold was observed. These findings do not contradict our previous hypothesis of an intrinsic cholinergic mechanism involved in the turning response evoked by P-LP electrical stimulation, although it cannot be excluded that fibers coming presumably from the superior colliculus or pretectum may contribute to the response. PMID- 3835846 TI - [Ventricular tachycardia mediated by a sequential AV pacemaker and caused by ventricular depolarization. Report of a case]. PMID- 3835847 TI - [Mitral valve aneurysm associated with persistent common atrioventricular canal of partial form. Report of a case]. PMID- 3835848 TI - [Total anomalous pulmonary venous drainage in brothers. A case report]. PMID- 3835849 TI - [Degenerative calcification of the aortic valve and atrioventricular conduction system. A case report]. PMID- 3835850 TI - [Idiopathic hemochromatosis with rapid evolution of heart failure. A case report]. PMID- 3835851 TI - [Evaluation of myocardial infarction size after reperfusion]. PMID- 3835852 TI - [Sudden death during sport activity]. PMID- 3835853 TI - [QT interval and ventricular tachycardia in acute myocardial infarction]. PMID- 3835854 TI - [Importance of the maintenance of atrioventricular synchronism in the treatment of sick sinus syndrome]. PMID- 3835855 TI - [Acute myocardial infarction in patients under 50. Clinical and epidemiological aspects]. PMID- 3835856 TI - [Arterial microanastomosis with laser beams]. PMID- 3835857 TI - [Changes in left ventricular function in systemic arterial hypertension]. PMID- 3835858 TI - [Acute effects of dipyridamole on the functional performance and synergism changes of the left ventricle contraction in patients with ischemic cardiopathy]. PMID- 3835859 TI - Surgical management of adults with cyanotic congenital heart disease. PMID- 3835860 TI - [Sudden cardiac death. Identification of groups of high risk in patients hospitalized with precordial pain in a coronary care unit]. PMID- 3835861 TI - [Myocarditis in the 1st year of life. Report of 2 cases]. PMID- 3835862 TI - [Rapidly progressive mitral insufficiency during initial manifestation of systemic lupus erythematosus. Anatomo-clinical-echocardiographic correlation. A case report]. PMID- 3835863 TI - [Re-entry ventricular tachycardia: new mechanism of ventricular tachycardia. A case report]. PMID- 3835864 TI - [Pulmonary arterial hypertension associated with congenital cardiopathies]. PMID- 3835865 TI - [Behavior of volume, mass, compliance, shortening velocity measures, contractility indices and effort (stress) of the left ventricle in chronic mitral insufficiency]. PMID- 3835866 TI - [Changes in the R wave in the V5 lead during stress electrocardiogram as index of left ventricular function changes]. PMID- 3835867 TI - [Two-dimensional echocardiographic pulsed Doppler study of mitral and aortic valve diseases]. PMID- 3835868 TI - [Evaluation of cardiac function by radioisotopic angiography, in patients with chronic Chagas cardiopathy]. PMID- 3835869 TI - [Mitral annular subvalvular aneurysm of the left ventricle. Report of 4 cases]. PMID- 3835870 TI - [Chylopericardium. A complication following mitral valve replacement. A case report]. PMID- 3835871 TI - [Coronary embolism in a pregnant woman with an aortic disk prosthesis. Report of a case]. PMID- 3835872 TI - [Direct communication between the right branch of the pulmonary artery and the left atrium. Report of a case and review of the literature]. PMID- 3835873 TI - [Excitation-contraction coupling in skeletal, cardiac and smooth muscles. Changes of vascular smooth muscle in arterial hypertension]. PMID- 3835874 TI - [Cardiorespiratory acclimatization of athletes to altitude]. PMID- 3835875 TI - [Effect of the chronic use of verapamil, by oral route, in patients with primary dilated cardiomyopathy: a new therapeutic approach?]. PMID- 3835876 TI - Proceedings of the Extraordinary International Symposium on Recent Advances in Otitis Media with Effusion. Kyoto, 1985. PMID- 3835877 TI - Bacterial examination of serous otitis media and experimental tubal stenosis. AB - Involvement of bacteria in serous otitis media was studied in man and by animal experimentation (using rabbits). Bacteria from the middle ear fluid, the skin of the external ear canal and the epipharynx of 100 human ears were cultured. Bacteria were also cultured from 50 ears of rabbits with serous otitis media induced experimentally by tubal stenosis, in the same way as those taken from human ears. Bacteria were detected in the middle ear fluid of 61 human ears (61%), and in 48 human ears (48%) except for those with contamination. The bacteria detected in the middle ear fluid were the same as those detected in the epipharynx in 40 of the 50 rabbit ears during the period from the start of treatment to the 30th day. In ears which were treated for more than 30 days, the bacteria detected in the middle ear fluid tended not to be the same as those detected in the epipharynx. From these results it was inferred that inflammation of the epipharynx spread over the middle ear cavity through the auditory tube. PMID- 3835878 TI - Epidemiology of acute otitis media in children in an urban population. PMID- 3835879 TI - Middle ear pressure in patients with middle ear effusion--direct measurement by pressure microtransducer. AB - Middle ear pressure in patients with middle ear effusion were measured using a microtransducer which developed in our laboratory. Middle ear pressure showed not only negative but also positive pressure in these patients. The findings are discussed briefly. PMID- 3835880 TI - Clinical and experimental studies on the pathogenesis of otitis media with effusion. AB - Otitis media is the most common pediatric disease as a complication of the upper respiratory infection and at least 10% of the otitis prone children will suffer from prolonged episodes of minor conductive hearing loss and communication disorder due to the presence of middle ear effusion (MEE). In spite of exhaustive studies presented in the past three international symposia on otitis media with effusion (OME), there still remain wide gaps in our knowledge regarding the etio pathogenesis and appropriate treatments of the disease. A couple of years ago, a new project of clinical and laboratory researches on OME were initiated in the Department of Otolaryngology, Tohoku University School of Medicine and some results of the studies have been reported in recent Japanese academy meetings as well as in the 2nd and 3rd International Symposium of Recent Advances in OME. The purpose of this paper is to summarize the results of our recent studies performed by several investigators in our department and related hospitals. PMID- 3835881 TI - Pathophysiology of otitis media with effusion: clinical evaluation through some qualitative methods. AB - In an attempt to elucidate the pathophysiology of otitis media with effusion (OME), systematic clinical investigations were undertaken. The high resolution computed tomography, tympanogram, tubal inflation and our qualitative tubal functioning test were routinely applied to cases of OME, both in children and adults. Through these studies, following was concluded: 1. The primary pathology involved may be obstructive lesion somewhere in the tubotympanic cleft including the epitympanum and the mastoid, which in turn results in negative pressure in the middle ear. 2. This negative middle ear pressure may mainly constitute the Eustachian tube dysfunction, which is considered to play an important role in the pathogenesis of OME. Discussed in detail further will be the importance of correcting the negative middle ear pressure substantially for the treatment of OME, and also the essence of our qualitative tubal functioning test. PMID- 3835882 TI - Evaluation of pharmacological effects on eustachian tube function. PMID- 3835883 TI - Oxygenation through the round window membrane and the inner ear function. AB - The effect of oxygenation through the round window membrane was estimated using polarographic technique and the combined action potential of the inner ear. The calculated amount of oxygen permeable through the round window membrane (14% in room air and 80% in pure oxygen) revealed to have very limited effect in maintaining the inner ear potential. Carbogen inflation in maintaining the N1 potential during asphyxia was significantly effective only at 8 kHz. Oxygen supply by this route, however, may enable the inner ear tissue alive even in misery perfusion and recover the high tone potential as a therapy of otitis media with effusion. PMID- 3835884 TI - The ciliary activity of the middle ear lining--functional and morphological observation. AB - Since the middle ear lining is an extension and a modification of the respiratory mucosa, it is conceivable that it has a mucociliary system and it plays an important role in clearance of the tympanic cavity. It was already noted in morphological studies that the middle ear lining had ciliated cells. To our knowledge, however, ciliary activity has never been observed directly. In the present paper, the ciliary activity of the middle ear mucosa was investigated directly and quantitatively by the photo-electric method of Ohashi and Nakai. In this work, special reference was made to the frequency of ciliary beating at various sites within the tympanic cavity. Ciliary activity was found to exist in the Eustachian tube and middle ear same as in other respiratory epithelium and this activity by ciliated cells was more active as their location became more distal to the Eustachian tube. Although the present results are preliminary, the techniques used in this study will provide a new avenue of the investigation of pathological middle ear lining. PMID- 3835885 TI - The ciliary activity of the middle ear lining in some pathological states. AB - The ciliary activity in some pathological middle ear lining was discussed with special reference to the morphology of the epithelial cells in this paper. The changes in ciliary activity due to in vitro Staphylococcus aureus injection did not practically show any differences between the sites. On the other hand, the time-course changes in ciliary activity after in vivo S. aureus injection were found to differ between the sites. Ciliary activity was rather accelerated at the proximal site, while it was decelerated at the distal site. Few changes but for sporadic small compound cilia were observed at the proximal site, and some inflammatory changes were noted at the epithelium of the distal site. SO2 exposure affected the middle ear lining of rabbits. Fourteen days after 4 week's exposure to SO2, the middle ear lining displayed declined ciliary activity and many signs suggestive of secretory asthenia. In addition, the middle ear lining of rabbits given about 600 mg carbocysteine, both during and 2 weeks after the exposure displayed excellent ciliary activity and normal morphology of the epithelial structure. PMID- 3835886 TI - Rheological properties of middle ear effusion and their role on mucociliary clearance. AB - The viscoelastic properties of freshly harvested middle ear effusion (MEE) from children were determined by an oscillating sphere magnetic rheometer and compared with transportability of MEE on mucus-depleted frog palate. The elastic modulus (G') at 1 Hz of MEE from 43 untreated ear was ranged from 1.9 to 1,790 dyn/cm2 and the mean value was 28.4 dyn/cm2. The dynamic viscosity (eta') at 1 Hz of the same samples was ranged from 0.2 to 146 poise with the mean value of 3.4 poise. A maximum value of transport was obtained at G' of about 20 dyn/cm2, and below this value there was a significant positive correlation between the transport rate and log G'. Above 20 dyn/cm2, the negative correlation between the transport rate and log G' was significant. A similar significant correlation between the transport rate and log eta' was observed. PMID- 3835887 TI - A role of surface tension lowering substance in eustachian tube function. PMID- 3835888 TI - Pharmacological characterization of receptors on blood vessels in the tympanic membrane involved in otitis media. AB - Acetylcholine dropped onto the meatal surface of the tympanic membrane evoked vasodilatation and a vascular leakage to the middle ear cavity. The vasoreactions were atropine-resistant. Substance P and vasoactive intestinal polypeptide (VIP) injected intravenously caused a marked vascular leakage and VIP also vasodilatation. These blood vessel changes seem to be regulated by the parasympathetic nerves as they were inhibited by vagotomy. Constriction of the tympanic membrane vessels was mediated through alpha-receptors. PMID- 3835889 TI - Fibrinolytic activity of middle ear fluid in otitis media with effusion. AB - In order to investigate the prolonged factors of otitis media with effusion, hydrolytic activities for specific substrates of plasmin and plasminogen activator (P.G.-activator) and the activity for fibrin degradation (fibrinolysis) were measured. Materials were middle ear fluids of 36 cases diagnosed as unilateral otitis media with effusion. Age of the patients were from 28 to 88 years old (mean: 61.3). Using specific substrates, determinations of P.G. activator activity and plasmin activity were made by the method of Claeson et al. and fibrinolysis was determined by the standard fibrin plate. The results are shown below: 1) Both activities for decomposition of amide against the specific substrates of plasmin and of P.G.-activator were revealed. 2) Concerning fibrinolysis in all cases, we divided them into 3 groups; fibrinolysis (-) group of 8 cases (22.2%) which could not dissolve fibrin at all, fibrinolysis (+) group of 17 cases (47.2%) which could dissolve fibrin. Fibrinolysis (+/-) group of 11 cases (30.6%) of which the presence of fibrin dissolution was unknown. 3) The progress of fibrinolysis was observed by serial collection of middle ear fluid in the same side ear of 5 cases out of 17 cases having much activity for fibrin degradation, and lowering of fibrinolytic activity was revealed in 4 out of these 5 cases as the result. On the basis of these results, we discussed on the process of prolongation in this disease from the standpoint of the presence of fibrinolytic activity in the middle ear fluid. PMID- 3835890 TI - The significance of protease inhibitors in the pathogenesis of otitis media with effusion. AB - Concentration of alpha 1-antitrypsin (alpha 1-AT), alpha 1-antichymotrypsin (alpha 1-AChyT), inter-alpha-trypsin inhibitor (I-alpha-I), and alpha 2 macroglobulin (alpha 2-M) was measured in 27 serous middle ear effusions (MEEs) from 24 adult patients. The presence of protease-inhibitor complex was analyzed by crossed immunoelectrophoresis (CIEP). Mean concentration of alpha 1-AT was 361 +/- 90.0 mg/dl and was higher than that of other inhibitors: alpha 1-AChyT, 80.6 +/- 40.7; I-alpha-I, 21.3 +/- 21.5; alpha 2-M, 59.5 +/- 57.1. Molar concentration of alpha 2-M was the lowest. Most of alpha 1-AT and alpha 1-AChyT in MEEs were unsaturated; free inhibitors. Alpha-1-AT could be saturated by trypsin and elastase immediately, and only alpha 2-M could be saturated by papain (classical thiol protease). Serous MEEs have high anti-trypsin activity attributed to mainly free alpha 1-AT. Since level of alpha 2-M was very low, lysosomal thiol proteases could be one of the major proteases inducing proteolytic damage to middle ear mucosa. PMID- 3835891 TI - Cholesterol crystals in middle ear effusions and granulomas. AB - Pathomorphological investigations of the cholesterol crystals were carried out in the middle ear effusions and cholesterol granulomas of experimented animals and humans. The shape and size of the cholesterol crystals were variable, depending upon the surrounding substances. In the middle ear effusions, the crystals formed rather large rectangular structures, which tended to become smaller and thinner, as the granulomas developed. In the compact granulomas, the crystals appeared smaller, thinner and deformed, suggesting that they may possible be dissolved by a phagocytosis of active giant cells. PMID- 3835892 TI - Location of intravenously injected kanamycin sulfate in the middle ear mucosa. AB - Twelve guinea pigs were treated with intravenous kanamycin sulfate (KM) and sacrificed 2, 5, 10, and 30 min later to investigate its location in the middle ear mucosa, especially in the Eustachian tube (ET). Immunological examinations evidenced KM in the epithelial and subepithelial layers of the ET on each occasion of observation. But, it was never recognized in the tubal gland. These observations might indicate that clinically used drugs easily get to the ET except for the tubal gland which might have some barrier mechanism against foreign bodies. PMID- 3835893 TI - Experimental otitis media with effusion induced by electron beam irradiation to pharyngeal orifice of auditory tube in guinea pig. PMID- 3835894 TI - A study in children on the inhibited pneumatization of the mastoid in otitis media with effusion. PMID- 3835895 TI - Postnatal development of the eustachian tube and its surrounding structures--a preliminary study. PMID- 3835896 TI - Cytological and histopathological studies of otitis media with effusion. AB - Middle ear fluid contains such cells as neutrophils, macrophages, and lymphocytes. There have been numerous reports dealing with these cellular components in the fluid. This study was undertaken to investigate interrelation between the type of predominant cells in the fluid and the stage of disease in adults and children. The study also included bacterial isolation from fluid for comparison of detection rates between adults and children, and microscopic examination of temporal bone from 2 adult patients with otitis media with effusion complicating tumors of head and neck. Thirty-two ears of adult patients and 40 ears of children both having received myringotomy were studied. The fluid specimens were obtained from middle ears examined microscopically with May-Giemsa stain and with alpha-Naphthyl butyrate esterase and Naphtohol AS-D chloroacetate double stains for identification of macrophages. Histopathological studies of the temporal bone were examined with hematoxylineosin stain. In adults, neutrophils were predominant in the fluid of 54.5% of subacute cases while the predominant cell type was macrophages in 45% of chronic cases. Neutrophils were the predominant type in 62.2% of children with chronic stage. Bacteria were demonstrated in 26.0% of the adult cases and in 21.6% of the children. By histopathological examination of the temporal bones, neutrophils were found in the fluid of case 1, and a large number of macrophages in the fluid and fibrosis of the tympanic cavity were found in case 2. PMID- 3835897 TI - Scanning electron microscopic study of human eustachian tube epithelium: aging and pathologic changes. AB - Scanning electron microscopic study of human Eustachian tube epithelium showed that numerous secretory cells and compound cilia were observed mostly in children while with advancing age squamous or cuboidal cells were largely increased in contrast with decreasing number of ciliated and secretory cells. In the cases of otitis media with effusion, findings were characterized by the mucous hypersecretion and abnormal cilia. Thus, mucociliary function of the tubal epithelium may easily be impaired in children and elderly adults, and the accumulation of fluid may consequently be induced in the middle ear cavity. PMID- 3835898 TI - The common site for otitis media in human temporal bones--a quantitative histopathological study. PMID- 3835899 TI - Histopathology of otitis media with effusion: electron microscope study of human temporal bones. PMID- 3835900 TI - The infant eustachian tube lumen--pharyngeal part. AB - A study of Eustachian tube measurement in infants and children is presented. The study included 33 Eustachian tubes from normal temporal bones and 10 Eustachian tubes from temporal bones harboring acute otitis media. The temporal bones underwent histologic serial sectioning. The lumen of the first portion of the Eustachian tubes, i.e., the pharyngeal part, was measured with the aid of a grid mounted on a microscope. These measurements show: A) the Eustachian tube lumen grows and enlarges to a small degree with age; B) each age group presents a considerable variation in the range of the area of the lumen compatible with natural biological distribution; C) no statistical difference was found in the size of the pharyngeal portion of the lumen of the Eustachian tube from temporal bones which have acute otitis media when compared with lumens of the pharyngeal portion of Eustachian tubes coming from non-pathological ears. PMID- 3835901 TI - Secretory IgA, secretory component and pathogen specific antibodies in the middle ear effusion during an attack of acute and secretory otitis media. AB - The total concentration of secretory IgA (SIgA) and secretory component (SC) as well as the occurrence of pathogen specific serum type (IgG, IgA and IgM) and secretory type antibodies against Streptococcus pneumoniae and Haemophilus influenzae in the middle ear effusion during an attack of otitis media were studied by using the ELISA method. The middle ear effusion samples were taken at 2 to 4 weeks' intervals from patients with recurrent acute otitis media (RAOM) or secretory otitis media (SOM). In the samples of the RAOM patients the SC/SIgA ratio was 2.2, while in the SOM samples the ratio was 13.6. Both serum and secretory type antibodies to the infecting bacteria could be detected in the middle ear effusions in both of the patient groups. The results of this study show that the middle ear can develop antigenic specific antibodies against the infecting bacteria. The increased production of SC seems to be related to the pathogenesis of SOM. PMID- 3835902 TI - Experimental studies on immunogenesis of otitis media with effusion. AB - In order to investigate otitis media with effusion from the systemic perspective, we have studied histological reactions of the mucous membrane in the both middle ears in the sensitized animals. Guinea pigs were initially immunized by injection of BSA conjugated with alum (BSA-alum) into unilateral tympanic cavity. The second challenge of BSA-alum was performed on the seventh day after primary sensitization under an appropriate schedule. The guinea pigs were sacrificed for histological examination at 3 days after the second administration. Histological changes of the middle ear mucosa in the sensitized ear were characterized by hypertrophy of mucosa with fibrosis. Numerous mononuclear cells also existed. In non-sensitized ear (opposite side), the changes were edema of the mucosa showing mild proliferation of fibroblast and vasodilation. Mainly mononuclear cells were scattered. It was noted that these reactions were weaker than those of the sensitized ear. PMID- 3835903 TI - Complement anaphylatoxins activity in middle ear effusion. AB - There are various theories on the causes of otitis media with effusion. The exact pathogenesis, however, still remains unknown, while the causes have been so far elucidated and studied by many researchers. This disease occurs frequently in children, showing an increasing trend, often causes subsequent deafness, and its treatment takes a long time causing social hardships. Therefore it is urgent to elucidate the pathogenesis of this disease. In this study the C3a and C5a fragments of complements from middle ear fluids, most closely related to the inflammatory reaction, were measured. The subjects were patients with otitis media with effusion consisting of 5 children and 9 adults. All cases showed retraction in the tympanic membrane findings, B type in the tympanogram classification, and serous type in the properties of middle ear fluids. CRP, alpha-1, alpha-2, beta-, gamma-globulin, neutrocytes, and lymphocytes in serum were normal when examined, and C3, C4, C3a, C5a, and CH50 were normal as well. Extremely high values of C3a and C5a in middle ear fluids were observed. The values of C3a were 18,000 ng/ml at maximum, 5,800 ng/ml at minimum, and 9,293 ng/ml on average. The values of C5a were 86, 20, and 55 ng/ml, respectively. No difference between childhood and adult cases was observed, in spite of differences in the underlying diseases among them. The above results revealed that an extremely intensive inflammatory reaction may take place in the middle ear, and that anaphylatoxin might play an important role as a delayed factor in otitis media with effusion. PMID- 3835904 TI - Cytological study and chemotactic activity in middle ear effusion. AB - A cellular analysis of 330 middle ear effusions (MEEs) from children with otitis media with effusion (OME) was performed with the use of cytocentrifuge prepared smears and the results were compared with their clinical data. Chemotactic activity in MEE was also determined with the use of agarose assay and compared with their cytological results. In the acute group the cellular pattern of MEE was mainly the neutrophil dominant type which was observed in 60% of this group. In the chronic group the percentage of this type of MEE decreased but was still present in 25% of them. High chemotactic activity was frequently observed especially in neutrophil dominant type MEE. PMID- 3835905 TI - Perilymph antigen and antibody levels following an immunologically-induced middle ear effusion. PMID- 3835906 TI - Type II collagen induced autoimmune salpingitis in the rat. AB - Previous studies showed type II collagen induced autoimmune salpingitis in Wistar rats. In this study we increased the number of animals and investigated whether or not type II collagen induced salpingitis is transferable by immune sera. Histopathological observations of salpingitis in the serum transferred rats were similar to those observed in the immunized rats but the degree of otopathological changes was less than that of immunized rats. Electronmicroscopic findings indicate an increased permeability in the capillaries and intercellular space and cellular infiltration in the submucosa of the immunized rats. PMID- 3835907 TI - Type II collagen induced tympanosclerosis model in guinea pigs. PMID- 3835908 TI - The role of eustachian tube dysfunction in immune-mediated middle ear effusion and inflammation. PMID- 3835909 TI - Otoscopic findings in a group of schoolchildren in Kuwait. AB - Middle ear diseases are the most common cause of hearing impairment in children. Therefore, we found it important to conduct a study to reveal the frequency of different middle ear conditions. Using an otoscope with a magnifying lens 826 children in their second grade of primary school were examined. Various kinds of ear canal and middle ear pathology were found. An extremely high percentage (41%) of the 1,652 examined ears did show significant pathology. The different findings will be presented and comparison with other similar studies will be done. PMID- 3835910 TI - Atelectatic ear and pathologic nasopharynx. AB - Pathologic relation between atelectatic ears and their nasopharynx were investigated in 50 patients with various degrees of atelectatic ears by transnasal fibrescope and C.T. And their morbid adenoids were compared with the adenoids of 20 patients with mouth breathing but free from ear problems. The process of drum bulging after catheterization, retraction after inflation, and inward movement during swallowing, proved that intratympanic pressure was influenced by nasopharyngeal pressure produced by swallowing, and that Eustachian tube itself was functioning to the pressure. Intratympanic negative pressure was proved by the movement of blue solution after the puncture of 5 atelectatic ear with effusion. And more dynamic negative pressure produced by swallowing was demonstrated in 5 other cases. The morbid adenoid with atelectatic eardrum was differentiated from the large posterior type of adenoid of the healthy eardrum, by the pendulous projection over the choana especially in swallowing. A dynamic vacuum caused by "Toynbee phenomenon" is discussed. PMID- 3835911 TI - The atelectatic ear and its classification. AB - Atelectasis of the middle ear cavity occurs in advanced chronic otitis media with effusion. Atelectasis with effusion may progress to atelectasis without effusion, and further possible complications include adhesive otitis, ossicular disruption, cholesteatoma, and sensorineural hearing loss. A classification is presented of the various sequelae of otitis media with effusion under the basic concept of the atelectatic ear because most of the sequelae observed had developed through the atelectatic ear. This classification depends on localization of the main pathology, i.e. the tympanic membrane, middle ear or inner ear. PMID- 3835912 TI - Exogenous hyaluronic acid (Healon) accelerates the healing of experimental myringotomies. AB - Topical application of hyaluronic acid (Healon) onto the borders of rat tympanic membrane perforations accelerated the rate of wound healing. The closure time was roughly 60% of that of the untreated perforations. Epithelial cells fused with opposing cells slightly in advance of supporting connective tissue and thus bridged the remaining gap. It seems as if hyaluronic acid, topically applied, can serve as a supporting and orienting matrix for the proliferating squamous epithelium. PMID- 3835913 TI - Daily impedance audiometric screening of children in a day-care institution. AB - Fifty-seven children in a fairly new day-care institution were examined daily by impedance audiometry for 4 weeks. A Madsen Electronics ZS 330 tympanoscope was used. The tympanometric curves were divided into types A, C1, C2, and B. Completely flat curves and cases in which the compliance was less than 0.25 ml, combined with an absent ipsilateral stapedial reflex, were also interpreted as type B. The object was to ascertain how quickly the types changed and how stable the B curves were. A total of 43 episodes of B curves occurred. Of them, 16 lasted for only 1 day and thereafter 9 became quite flat. Only a few lasted for 8 23 days and 8 continued for 26 days or longer. PMID- 3835914 TI - Forward-backward tracing tympanometry in the diagnosis of middle ear pressure. AB - Two tympanograms (TG) were routinely recorded on each ear by changing the pressure in the external auditory meatus (EAM), one in the decreasing (forward tracing: TG-F) followed by the other in the increasing direction (backward tracing: TG-B). Both TG were drawn on the same chart and the peak locations were compared. In a normal ear the TG-F peak tended to be formed in the negative pressure area and that of TG-B in the positive area. In a model whose middle ear pressure (MEP) was adjusted to the atmospheric pressure, the TG-F peak always indicated a negative pressure and that of TG-B a positive pressure value. As long as the same model was used, the magnitude of peak shift was identical irrespective of the middle ear pressure. The magnitude of the peak shift was influenced by the speed of EAM pressure change and a linear increase was observed up to the speed of 70 mmH2O/sec, both in a normal ear and a model. These findings seem to suggest that the peak location of a unidirectionally drawn TG can not be regarded as indicating the precise MEP. A valid MEP can better be estimated by averaging the peak pressure of TG-F and TG-B of forward-backward tracing tympanogram. In ears with pathology considerable variation was noted in the magnitude of the peak shift, so that relying solely on unidirectionally drawn TG could have lead to misdiagnosis in some cases. This was especially true with ears having small perforations covered with granulation or fluid. PMID- 3835915 TI - Tympanograms of otitis media with effusion: an experimental study. AB - A sufficient explanation concerning tympanogram (TG) of otitis media with effusion (OME) has not been reported. The purpose of the present study was to investigate the relationship between the types of TG and actual pathological status of the middle ear system by means of experimentally modified middle ear clefts. In the present experiments, human temporal bones, guinea pigs' bullae and plastic models were used. The results were as follows: (1) Water was gradually poured into the middle ear cleft through the Eustachian tube. When the water level rose above the umbo, the height of TG slightly exceeded that of the original TG. Further addition of water produced M-shaped TG, however, flat TG (type B) was not detected until the water-line nearly reached the aditus. A similar phenomenon was observed in the plastic models when the water level reached the aditus-equivalent-site. (2) Tympanometrically measured middle ear pressure (MEP) was almost equivalent to the actual MEP recorded by a manometer when the tympanic membrane was normal. However, this result could not be duplicated in flaccid or adhesive tympanic membrane cases. (3) A clear reduction in the height of TG in guinea pigs' bullae was observed with decreased air volume. In addition, shallow TG was produced by an occlusion of the aditus of the human temporal bones and of the aditus-equivalent-site of the plastic models. It was demonstrated that the TG pattern depends on the fluid volume and location, air volume of mastoid cavity, intratympanic pressure and eardrum condition.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835916 TI - Long-term results of ventilation tube for otitis media with effusion in children. PMID- 3835917 TI - Effect of adenoidectomy on eustachian tube function. PMID- 3835918 TI - The long term effect of adenoidectomy on established otitis media with effusion in children. AB - Adenoidectomy is a recommended treatment for otitis media with effusion (OME). This work up-dates a previous report and includes a larger number of 155 cases. Surgery has been allocated at random with a control non-adenoidectomy group. The study is prospective and allows for a wide variety of variables. These include age, sex, adenoid size, seasonal variation, observer accuracy, and spontaneous resolution. Adenoidectomy results in clearance of OME even one year following operation in 31-45% of cases. Clearance is related to the duration of history of hearing loss though this may reflect on age effect. Tonsillectomy provides no additional benefit. PMID- 3835919 TI - Long term follow-up of secretory otitis media in children: the effects of adenotonsillectomy with insertion of a ventilation tube. AB - The long term effects of adenotonsillectomy and ventilation tube were studied in 78 children with serous otitis media. Duration of postoperative follow-up range from 2 to 8 years, with an average of 4.5 years. Repeated preoperative and postoperative pure tone audiometry as well as otoscopic examinations under a microscope were undertaken routinely for the assessment of the progress or improvement of the disorder. Three months after the operation, an average improvement of the hearing thresholds was 16.3 dB. However, it was 20.3 dB in the final examination. Under the otoscopic examinations, 35% of the ears were noted to have various kinds of pathological changes. Tympanic atelectasis of Grade I and II (Sade) was noted in 17% of all the ears. Retraction pocket of the pars flaccida was found in 2%, permanent perforation in 4% and cholesteatoma in 2% of these ears. PMID- 3835920 TI - Tympanostomy tubes prevent the development of experimentally induced purulent otitis media. AB - Cleavage of the soft palate will cause purulent otitis media bilaterally in 100% of experimental animals (the rat) within 2 weeks. In this model a tympanostomy tube was inserted unilaterally. At 2, 7, and 21 days after the surgery the middle ear status was mapped in the otomicroscope and microbiological samples collected from the middle ear cavities and the nasopharynx. All intact ears became infected and developed purulent otitis media. Most of the tubulated ears exhibited normal middle ear cavities and remained culture negative. The few ventilated ears which were infected, however, showed a lower bacterial count than the corresponding intact ear. Thus in this model the insertion of a tympanostomy tube prevents the purulent otitis media from occurring. PMID- 3835921 TI - Limitation of long term ventilation tube: in view of complications and hearing restoration. AB - The silicon-rubber T-tube was applied to 181 ears in 116 patients with chronic otitis media with effusion within last 5 years. Among the 181 ears, 81 (46%) accepted the T-tube without problems. In the remaining 97 ears, complications such as otorrhea, occlusion of the tube, extrusion of the tube, enlarged perforation and cholesteatoma occurred. However, in 161 ears (89%), the tube could be stabilized in the middle ear and functioned as ventilating tube beyond 3 months. Based on the incidence and prognosis of the ears with the complications and the results of hearing, we conclude that insertion of the T-tube is valuable and reliable method of treatment in the ears with retractions or atelectasis but in the ears with adhesion or granulation, this method of treatment has only limited value. PMID- 3835922 TI - When to remove the ventilation tube--judgement using T-tube on the time to remove the tube. PMID- 3835923 TI - Statistical aspects of interpreting the results of clinical trials for OME. PMID- 3835924 TI - Treatment of otitis media with effusion. AB - It seems probable that otitis media with effusion (OME) arises from acute OM and cannot be mistaken for suppurative OM since its inflammation recedes to a lesser degree. Accordingly, my concept for treatment of patients with OME focuses on the inflammation. The purpose of this paper is to describe treatment on the basis of this concept. 1) Frequent lavages are extremely helpful in the amelioration of sinusitis in children. 2) Adenoidectomy should be performed after the condition of sinusitis has improved. 3) Salpingitis should be treated by Eustachian catheterization in combination with antral lavage. 4) Patients should be classified as one of two groups for treatment of the middle ear and mastoid: mild cases and severe cases. In mild cases, the lesions in the middle ear and mastoid are considered to be reversible; the lesions are treated by paracentesis and aspiration of effusion. In severe cases, with cholesterol crystal deposits and/or resistance to conservative therapy, and in any case in which lesions are considered to be irreversible, conservative treatment following total mastoidectomy is recommended. 5) In young children with OME, observation is required until about 8 years of age, since proper treatment of relapses or exacerbation should be carried out as early as possible. PMID- 3835925 TI - On fluctuation of hearing in otitis media with effusion after myringotomy. AB - Otitis media with effusion (OME) is known to occur in school or preschool children. Its chief symptom is hearing disturbance without otalgia. One of its effective therapies is myringotomy and suction of secretion out of its morbid tympanic cavities. This improvement differs with frequencies. The purpose of this paper is to present the mechanism of hearing recovery after myringotomy. The mean audiogram of OME showed a flat shape with 0 dB of bone conduction and 37.5 dB of air conduction. Hearing level after myringotomy recovered at high tones, but not recovered at low ones. One week later, the mean audiogram without perforations of eardrums showed hearing improvement at low tones. These findings suggested that slower recovery at low tones might be due to incision of an eardrum and closure of its perforation. To confirm this hypothesis we performed an experiment, by which the vibratory mechanism of a thin membrane was disclosed. The result showed that the vibratory modality of a membrane was influenced by incision of it. In conclusion, it is considered that though myringotomy of OME gets hearing improvement, it could result in hearing impairment, probably due to the vibratory modality of an eardrum. PMID- 3835926 TI - Histopathological changes of the eustachian tube in OME animal models. AB - To determine whether or not stimulations of various inflammatory irritants such as endotoxin and/or immune complexes (IC) play a role in the pathogenesis of otitis media with effusion (OME), experimental animal models were examined under light and electron microscopy. Horseradish peroxidase (HRP) was chosen as an antigen and anti-HRP sera were obtained from the animals immunized by emulsions of HRP and Freund's complete adjuvant. Seventy-three albino guinea pigs and 41 chinchillas were used in this experiments. One hundred and fourteen animals were divided into three groups: forty in the active Arthus (AA) group, 61 in the passive Arthus (PA) group and 13 in the control group. According to the chronological changes of the tympanograms, it was confirmed that the pathological changes in the middle ear cleft of the OME animals persisted for at least 10-14 days after the injection, whereas those in the control animals recovered within 3 4 days. Histological examinations of both PA- and AA-group animals revealed that electron-dense HRP-positive cells, most of which were non-ciliated, were widely dispersed in the epithelium. Many inflammatory cells such as polymorphonuclear leukocyte (PMN), macrophage and plasma cells were seen in the lamina propria and some PMNs were attached to the basal lamina. Intra-epithelial infiltration of PMNs and epithelial cell degeneration associated with the disrupted basal lamina were also observed. Most conspicuous changes were found in the Eustachian tube.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835927 TI - Normalization of the middle ear mucosa. PMID- 3835928 TI - The influence of OME to the inner ear. PMID- 3835929 TI - Evaluation of inner ear damage during conditions with middle ear effusion by use of brainstem audiometry. AB - The method of auditory evoked brainstem responses (AEBR) was applied on an animal model with two types of well defined middle ear effusions--serous otitis media (SOM) and purulent otitis media (POM). The animals with SOM exhibited fairly normal interpeak latencies but a considerably increased auditory threshold. In contrast, POM mainly affected the latencies of the brainstem evoked potential but also caused a slight increase of the auditory threshold. The results indicate that SOM chiefly causes a conductive hearing loss, while POM also affects the neural circuit. PMID- 3835930 TI - Auditory deprivation. PMID- 3835931 TI - Late results of hearing in children treated with tympanostomy tube. PMID- 3835932 TI - A cause of sensorineural hearing loss in otitis media with effusion. PMID- 3835933 TI - Eustachian tube function and its relation to middle ear pressure in children. PMID- 3835934 TI - Eustachian tube function in middle ear effusion (MEE). PMID- 3835935 TI - Autonomic nerve regulation in the eustachian tube function. PMID- 3835936 TI - Evaluation of the eustachian tube in normal subjects and in patients with otitis media with effusion by high resolution computerized tomography. PMID- 3835937 TI - Diagnostic significance of endoscopy of the eustachian tube. AB - The significance of introducing endoscopic examination to evaluate Eustachian tube dysfunction including the newly developed pneumatic endoscopic procedure is discussed. The pneumatic endoscopic procedure at the three selected portions; the pharyngeal adjacent tubal area, the pharyngeal tubal orifice, and the lumen of the cartilaginous portion, is useful to detect topographic pathology, and its diagnostic significance may be attributed to visual detection of the morphological pathology. PMID- 3835938 TI - Inflammatory changes reflected in middle ear effusion in otitis media. AB - Otitis media (OM) is an extremely wide-spread disease, and the presence of middle ear effusion (MEE) is a common phenomena in OM. The analyses of MEE provide important information for better understanding of etiology and evaluation of inflammatory stages of the middle ear cavity. Well investigated etiologic factors of OM have included negative pressures within the middle ear cavity secondary to Eustachian tube dysfunction, and bacterial or viral infection. It is quite conceivable that the biochemical, cytological and immunochemical products found in the middle ear mucosa (MEM) and MEE during OM may contribute to the clinical course of the disease. The sources of these inflammatory components include: inflamed epithelial cells of MEM, cells of the subepithelial space, vasogenic origins, bacterial and/or inflammatory cell products in MEE. In animal studies (serous otitis media [SOM] and purulent otitis media [POM]), interesting correlations between sequential biochemical and cytological findings have been observed. The vasodilation, increased blood vessel permeability, and the release of intracellular products both from inflamed middle ear mucosa and inflammatory cells are determining factors for the biochemical changes of MEE. Recently, the importance of the role of the subepithelial space (SES) in the pathogenesis of various types of OM has been emphasized in human studies. A strong cellular immune response with proliferation of fibroblasts, collagen fibers, plasma cells, lymphocytes, macrophages, along with an increase in capillary networks have been characterized with SES changes in OM. Analysis of MEE by biochemical and immunochemical markers (prostaglandins, immunoglobulins, intracellular enzymes) have reflected inflammatory changes in the MEM of various types and stages of OM.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3835939 TI - Comparative study of biochemical characteristics of the fluids in otitis media with effusion and postoperative maxillary cysts. AB - The biochemical characteristics and smears of the fluids in M-OME, S-OME, AOM, POMC, and AMS were studied. The fluids in S-OME and POMC had the character of transudate rather than exudate. On the other hand, M-OME, AOM, and AMS showed a more exudative or secretive nature. The character of the product from the inflammatory process of the specific condition was particularly seen in M-OME, AOM, and AMS. Thus we speculate that the chronic inflammatory process has a close relationship to the pathogenesis of OME, especially in mucoid types. PMID- 3835940 TI - Immune complexes in otitis media with effusion. AB - The purpose of this study was to clarify the mechanism of the chronicity of otitis media with effusion (OME). The levels of the IgG-immune complexes (IC) in middle ear effusions (MEE) were determined by using anti-C3 solid phase ELISA. The clinical significance of IC in OME was investigated, and the results were as follows: 1) IgG-IC levels in MEE were found to be significantly elevated in patients with OME and positive rates of IgG-IC in MEE were 58.3% in acute cases, 54.5% in subacute cases, and 52.5% in chronic cases. 2) There was no correlation between IgG-IC levels and IgG levels in MEE which were determined by single radial immunodiffusion method. These results suggested that immune complexes formed in the middle ear cavity might play an important role in the prolonged inflammatory process of OME. PMID- 3835941 TI - Bacteriological and cytological findings according to the macroscopic characteristics of the middle ear effusions. AB - With standardized bacteriological methods, where direct microscopic examination took a very important place, 112 effusions from children (aged 1 to 6 years) with OME (minimum 2 months duration) were examined. It was demonstrated that acridine orange stain was superior to Gram stain in detecting bacteria, while Giemsa stain gave more information about the inflammatory cells involved. Purulent OME revealed most frequently bacteria (in total 92%), as well by direct microscopic examination (83%) as by culture (83%). Bacteria were found in the direct microscopic examination of 45% of the serous and 72% of the mucoid secretions. Cultures were positive in 45% of the serous and in 32% of the mucoid effusions. In the mucoid group, the sticky glue effusions had the lowest detection rate, especially when culturing (only 21% positive cultures). Polymorphonucleocytes were present in all purulent but also in all serous effusions, and in 76% of the mucoid effusions (57% of glue effusions). Lymphocytes often accompanied polymorphonucleocytes, especially in serous (45%) and seromucoid (47%) effusions. Mono-nuclear cells and macrophages were only rarely found. PMID- 3835942 TI - Defective immunocompetence in otitis-prone young children. AB - In a prospective study highly otitis-prone children were found to have significantly lower levels of IgG 2 at 12 and 32 months of age compared to healthy age matched controls. As a confirmation of these results the same otitis prone children had significantly lower activity compared to healthy children with regard to specific antipneumococcal antibody activity of both the IgG 1 and IgG 2 subclasses. These findings support the concept that otitis proneness is partly due to a defective immunocompetence. PMID- 3835943 TI - Pathogenesis and pathology of chronic otitis media with effusion. PMID- 3835944 TI - Pneumococcal antigens in otitis media. PMID- 3835945 TI - Cytological and immunochemical characterization of middle ear effusions: an experimental approach. AB - The aim of the present study was to experimentally provoke well-defined serous and purulent effusion materials and to analyze the fluid using cytological and immunochemical techniques. Using these parameters an attempt was made to find a marker(s) for the degree of inflammation, duration of the disease and possible sequelae. PMID- 3835946 TI - Experimental immune complex otitis media: localization of IgG by protein A-gold technique. AB - Immune complex (IC) was made of bovine serum albumin (BSA) and anti-BSA guinea pig serum, and instilled into the tubotympanic cavity of untreated guinea pigs. The location of IgG was determined by using the protein A-gold technique to trace IC in the tubotympanic mucosa of the otitis media with effusion (OME) caused by the instillation. IgG was found on the effusion, degenerated ciliated cells and on granules of goblet cells. There was no evidence of intense accumulation of IgG on the basement membrane of the mucosal epithelium or the capillaries. It is likely that IC activates complements in the tubotympanic cavity to cause OME. PMID- 3835947 TI - Immunologic and allergic aspects regarding the interrelationship of the middle ear and ethmoid effusions: a clinical and morphological studies. PMID- 3835948 TI - Type II collagen mediated autoimmune middle ear disease: eustachian tube disease, otitis media with effusion and tympanosclerosis. AB - Intact Eustachian tube and tympanic cavity functions are essential for normal middle ear physiology. Type II collagen is an essential component of ear tissue. Autoimmune response to this type II collagen produces sensorineural hearing loss, vestibular dysfunction, endolymphatic hydrops, otospongiosis-like lesions, Eustachian tube inflammation and Eustachian tube chondritis. In addition, these autoimmune responses occasionally produce otitis media with effusion (not infectious). Tympanosclerosis, which is a frequent sequelae of otitis media with effusions, was also induced by type II collagen immunization together with surgical incision of the tympanic membrane. The exact mechanisms of this type II collagen autoimmune mediated middle ear disease are not clear. However, the animals thus induced have higher antibody titers and cell mediated immune responses to type II collagen. The tympanic membrane showing tympanosclerosis also had C3 and Ig deposits. All the animals with otitis media with effusion induced by type II collagen immunization also had Eustachian tube disease. This could be due to a malfunction of the Eustachian tube. Thus, this model might provide a rational approach for the study of otitis media with effusion associated with vasculitis. Further studies are needed to elucidate the immunologic mechanism involved in the pathogenesis of otitis media with effusion. PMID- 3835949 TI - Endotoxin in middle ear effusions: in cases with persistent effusion after acute otitis media. AB - Endotoxin in persistent middle ear effusions (MEEs) from children with acute otitis media (AOM) whose acute inflammation had cleared was assayed by Limulus test, parallel with the detection of bacteria. Seventy-five percents of MEEs were endotoxin positive, and the concentration of endotoxin in MEE was not related to the interval between the onset of AOM and the date of sample collection. However, the cases with MEE that had high concentration of endotoxin tended to have persistent MEE for more than one month after sample collection. Therefore, the presence of endotoxin may be one of the causal factors of a delayed recovery of AOM and of the development of otitis media with effusion. PMID- 3835950 TI - Quantitative determination of bacterial endotoxin in middle ear effusions by chromogenic substrate method. AB - It is known that bacterial endotoxin on the outer surface of most gram-negative bacteria (GNB) is not only biologically active material, but also the modulator of the immune response. The earlier experiment documented that the endotoxin of killed Haemophilus influenzae was responsible for induction of chronic otitis media with effusion (OME). Recent study by DeMaria et al. determined the endotoxin of human middle ear effusion (MEE) by means of limulus amebocyte lysate assay. It was concluded the endotoxin was present in a high percentage of the effusion in human tympanic cavities. The present study was undertaken to quantitatively determine the endotoxin in human MEE by use of chromogenic substrate technique which is more sensitive and accurate than limulus assay. Sixty samples of mucoid and serous effusion were subjected to chromogenic substrate method. It was revealed that the mucoid effusion showed a significantly high level of endotoxin at 282 pg/ml in average, though the serous effusion contained only 35.9 pg/ml. It is assumed that the bacterial endotoxin may greatly contribute to the pathogenesis of otitis media with mucoid effusion. PMID- 3835951 TI - Oil contact keratosis pilaris. PMID- 3835952 TI - Recurring digital fibromas of infancy. PMID- 3835953 TI - Multiple hamartoma syndrome with trichoepitheliomas and basal cell carcinomas. PMID- 3835954 TI - Metastatic basal cell carcinoma associated with a small primary tumour. PMID- 3835955 TI - Eosinophilic pustular folliculitis: a case report from Singapore. PMID- 3835956 TI - Miconazole therapy in Pseudallescheria boydii infection. PMID- 3835957 TI - Photosensitivity to musk ambrette. PMID- 3835958 TI - Finger tip dermatitis. PMID- 3835959 TI - Hair bundles: a presentation of folliculitis. PMID- 3835960 TI - Psoriasis, pyrogallol and skin cancer. PMID- 3835961 TI - Resistance factors in dermatophyte infections. PMID- 3835962 TI - The diagnostic role in health care in the 1990's: the threats of supermarket imaging services versus the real potential for reduction of health disorder in Australia. PMID- 3835963 TI - Huge ameloblastoma of the jaw (report of three cases). PMID- 3835965 TI - High resolution CT scanning of the bronchial tree. CT bronchography: anatomy. PMID- 3835964 TI - Unilateral hydrothorax complicating continuous ambulatory peritoneal dialysis: demonstration by 99m-technetium-tin-colloid scintigraphy. PMID- 3835966 TI - High resolution CT scanning of the bronchial tree. CT bronchography: technique & clinical application. PMID- 3835967 TI - Scattered radiation doses during cardiac studies using a U-arm type fluoroscopy system. PMID- 3835968 TI - Antral web--a rare cause of vomiting and haematemesis in childhood. PMID- 3835969 TI - Neurofibroma--sliding hernia through obturator foramen. PMID- 3835970 TI - Pelvic dosimetry comparison of two manual afterloading systems. PMID- 3835971 TI - A case report. Carcinoma of the prostate with direct invasion of bone. PMID- 3835972 TI - Radiology of skiing injuries. PMID- 3835973 TI - A decade of radiotherapy in head and neck cancer in South Australia. Results of radiotherapy 1970-1980 at the Royal Adelaide Hospital. PMID- 3835974 TI - Assessment of diagnostic technologies. Methodology for unbiased estimation from samples of selectively verified patients. AB - Concern with the efficacy of diagnostic technologies has stimulated numerous studies aimed at quantifying the discriminatory properties of various tests and procedures. These have focused principally on estimations of the result conditional probabilities, given disease status, eg, the sensitivity and specificity or the ROC curve. A source of bias in estimating these probabilities that is often unavoidable is created by the existence of a nonrandom selection mechanism for determining which patients initially tested will receive definitive verification of disease status. Correction for verification bias requires frequency data on the test results and any symptoms or other factors that influence selection for verification, both in the verified sample and in the source sample of patients tested. PMID- 3835975 TI - A psychophysiological assessment battery. AB - This research project was the first step in the development of a psychophysiological assessment battery. The battery consisted of eight tasks that have a history of use within the field of psychophysiology. These tasks were examined on a nonpathological, physically healthy sample. This sample was administered the assessment battery three times over the course of 16 weeks. The response systems of HR, SC, RR, TPA, and FPA were examined. Two major research questions were then examined. The first question was whether a subject would display a stable physiological profile on the assessment battery across the three administrations. The second question was whether there would be individual differences in physiological profiles on the assessment battery. These differences were examined in terms of individual response stereotypy (IRS) and stimulus response specificity (SRS). Depending on the task, from 30 to 100% of the subjects displayed stable physiological profiles across administrations. Twenty-five subjects displayed a high degree of SRS. Five subjects displayed a high degree of IRS. PMID- 3835976 TI - Relationship of skin temperature changes to the emotions accompanying music. AB - One hundred introductory psychology students were given tasks that caused their skin temperatures to either fall or rise. Then they listened to two musical selections, one of which they rated as evoking arousing, negative emotions while the other was rated as evoking calm, positive emotions. During the first musical selection that was presented, the arousing, negative emotion music terminated skin temperature increases and perpetuated skin temperature decreases, whereas the calm, positive emotion selection terminated skin temperature decreases and perpetuated skin temperature increases. During the second musical selection, skin temperature tended to increase whichever music was played; however, the increases were significant only during the calm, positive emotion music. It was concluded that music initially affects skin temperature in ways that can be predicted from affective rating scales, although the effect of some selections may depend upon what, if any, music had been previously heard. PMID- 3835977 TI - Negative transfer of heart rate control following biofeedback training: a partial replication. AB - Ability to raise and lower heart rate (HR) on instruction was tested before and after unidirectional biofeedback training in two groups of 10 male volunteers. Instructional control was assessed in 2-min trials before training, and after 5 and 10 biofeedback trials of increasing (Group I) and decreasing (Group D) HR. The magnitude of HR elevations produced by Group D diminished following training, while modifications in Group I were unchanged. This negative transfer effect is discussed in relation to whether voluntary speeding and slowing HR reflect distinct capacities. PMID- 3835978 TI - Interferon induction in mouse fibroblast L-A9 cells. AB - Mouse L-A9 cell interferon was induced by infection with Newcastle disease virus. Interferon production was 1.5 X 10(5) IU/10(7) cells. Interferon was partially purified by precipitation with ammonium sulphate, chromatography on CM-Sephadex and hydrophobic chromatography on octyl-agarose. The specific activity of the final preparation was 1.7 X 10(7) IU/mg protein. Treatment of L-A9 cells with 20 IU/ml interferon prior to viral infection inhibited the intracellular accumulation of reovirus-specific double-stranded RNA. Dose-response studies of the cells to interferon indicated that L-A9 cells require 10, 13 and 15 IU/ml to obtain 50% viral plaque reduction for Marituba virus, vesicular stomatitis virus and reovirus, respectively. The present results demonstrate the potential of mouse L-A9 cells as an interferon-producing system and also as a model for the study of the effect of cellular response to exogenous interferon treatment on the replication of RNA viruses. PMID- 3835979 TI - Elastosis and steroid receptors in primary breast cancer. AB - The association between the presence of both estrogen (ER) and progesterone (PR) receptors, and the grade of elastosis was evaluated in 100 primary breast carcinomas, 37% of which were from menopausal patients. ER levels were higher in post- than in premenopausal women but only when both ER and PR were present. Progesterone receptor levels were independent of menstrual status but the lowest PR positivity in premenopausal patients was observed during the late luteal phase. The extent of elastosis of the 100 tumors was: Grade 0 (absent), 24%; Grade 1 (small or moderate), 49%, and Grade 2 (marked), 27%. The extent of elastosis was not related to the patient's menstrual status. A significant association was observed between marked elastosis and the presence or absence of both ER and PR. No relationship was observed between the ER + PR and ER-PR+ subclasses and the extent of elastosis. Our data suggest that marked elastosis results from the presence of hormone-dependent cells in human breast carcinomas. PMID- 3835980 TI - Intratumor chemotherapy in combination with a systemic antimetastatic drug in the treatment of Lewis-lung carcinoma. AB - The effect of an antimetastatic agent plus intratumor chemotherapy was evaluated in mice bearing Lewis-lung carcinoma by measuring survival time and by histological examination. Polymeric flavan-3,4-diol (APF) from avocado seeds, Persea gratissima, administered alone directly into the tumor did not change survival time, although it partially destroyed the primary tumor. However, the drug administered in combination with an antimetastatic, 1,2-bis(3,5 dioxopiperazin-1-yl)ethane (ICRF-154), resulted in an increase in survival time. When 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU) was used in place of polymeric flavanadiol as an intralesional drug, a significant increase in survival was also achieved. The effect of each drug alone and of their combination was evaluated by "responder analyses". Animals "cured" by the combination and rechallenged with 2 X 10(6) tumor cells showed that immunization could occur. PMID- 3835981 TI - Efficacy of pharmacological blockade of the cardiac parasympathetic system with atropine in normal men. AB - The effect of parasympathetic blockade with intravenously administered atropine (0.04 mg/kg body weight) on the heart rate (HR) of 11 normal males was evaluated using a standardized isometric exercise (handgrip). This type of exercise, when maintained for 10 s at the maximum intensity tolerated by the volunteer, causes tachycardia mediated almost exclusively by parasympathetic withdrawal. The test was performed under baseline conditions and at 20 +/- 3, 33 +/- 3, 42 +/- 3, 52 +/- 3 and 61 +/- 3 min after atropine infusion. The heart rate of the subjects at rest in the supine position (mean +/- SEM) was 70 +/- 2 bpm, reaching values of 119 +/- 3 bpm after atropine. Under control conditions (sitting position), the increase in HR induced by isometric exercise was 22 +/- 1.8 bpm. After blockade, the increase was 4 +/- 0.8, 4 +/- 0.7, 5 +/- 0.6, 4 +/- 1.0 and 4 +/- 0.8 bpm, respectively, at each repetition of the test. These results suggest that the blockade induced by this dose of atropine is effective for at least 1 h. They also indicate the need for a more rigorous definition of the functional half-life of atropine in the heart, when considering physiological tests that either stimulate or withdraw parasympathetic activity upon the heart. PMID- 3835982 TI - Quantitative analysis of ultradian luteinizing hormone secretion in normal men. AB - Basal pulsatile secretion of luteinizing hormone (LH) was studied in 8 healthy adult men and analyzed by mathematical and statistical techniques. LH pulses previously defined by semiquantitative criteria resisted the data-smoothing techniques employed. LH values were shown to have normal distribution in normal men. No correlation was found between mean LH and testosterone levels for the same individual. On the basis of analysis of variance it was shown that the individual variability and not the collection time is important in determining each isolated LH value. The LH levels were located within a particular channel for each individual for each collection time. PMID- 3835983 TI - Muscular lesions induced by a hemorrhagic factor from Bothrops neuwiedi snake venom. AB - The local tissue effects of crude Bothrops neuwiedi snake venom and of its hemorrhagic factor (NHF) were studied on mouse tibialis anterior muscle in vivo. After 6 h, 8 days and 6 weeks the muscles were examined in paraffin sections stained with hematoxylin and eosin. Both NHF and crude venom produced hemorrhage and myonecrosis, later followed by muscle fiber regeneration. Intramuscular arteries also suffered necrosis. The minimal dose of NHF necessary to produce detectable hemorrhage and myonecrosis was 50 ng, while the minimal venom dose needed to produce the same effect was 20 times higher. The results indicate that NHF is one of the major factors responsible for the local effects of B. neuwiedi venom. PMID- 3835984 TI - Endocrine disorders render rats hyporeactive to non-steroidal but not to steroidal anti-inflammatory drugs. AB - The effect of cortisol (10 and 20 mg kg-1 day-1, sc), indomethacin (2 and 4 mg kg 1 day-1, po) and piroxicam (10 and 20 mg kg-1 day-1, po) on the proliferative component of inflammation was investigated in normal, diabetic, adrenalectomized and diabetic-adrenalectomized rats using the cotton pellet test. Whereas cortisol was equally effective in preventing granulation tissue formation in all groups of animals, indomethacin and piroxicam were much less active in animals with hormonal dysfunctions. Indomethacin and piroxicam reduced thymus weight of normal and diabetic animals as much as cortisol. This was taken to be a strong indication of the effect of these non-steroidal drugs on the adrenal cortex leading to increased secretion of adrenal corticosteroids. We conclude that at least part of the anti-inflammatory effect of indomethacin and piroxicam, in the present experiments, can be ascribed to the release of endogenous corticosteroids. This would explain the decreased sensitivity of adrenalectomized animals to the non-steroidal anti-inflammatory drugs used. An additional component, however, seems to be necessary for the full expression of the anti inflammatory effect of these drugs, since diabetic animals were also less responsive to them. When both components were absent, as in diabetic adrenalectomized animals, indomethacin and piroxicam were practically devoid of an anti-inflammatory effect. PMID- 3835985 TI - Dissociation of the toxic and behavioral effects of lithium on rats. AB - In a previous study we have shown that weight loss or animal death as a sign of toxicity due to chronic administration of lithium in rats is more intense among male than female adult animals (5 months old), and is not observed in growing male and female animals (2 months old) (Teixeira and Karniol, Acta Pharmacologica et Toxicologica, 51: 1-5, 1982). In this study we report the results obtained for the same animals in the open field test. The ip administration of 3.0 mEq/day of LiCl to female rats for 28 days produced a decrease in rearing (60- and 150-day old animals) and ambulation (150-day old animals) in relation to control animals. Male rats of both ages submitted to the same treatment showed no changes in rearing or ambulation. The low level of activity observed in the male control groups during the 2nd and 4th experimental week may probably explain the lack of lithium effect on the number of rearing (both age groups) and ambulation (older animals) activities. We conclude that, under the present experimental conditions, the behavioral effects of lithium on female rats are dissociated from the toxic action of this substance. PMID- 3835986 TI - Effects of temperature acclimation on rabbit metabolic rate and rectal temperature. AB - The metabolic rates and rectal temperatures of cold-(10 degrees C), warm-(20 degrees C) and heat-(30 degrees C) acclimated rabbits were measured at 10, 20 and 30 degrees C. When the logarithm of metabolic rate was plotted against the logarithm of body weight, no differences could be demonstrated between the slopes of the lines obtained for each of the nine experimental groups. Metabolic rate, expressed as kcal h-1 kg-1, kcal h-1 kg-3/4 and kcal h-1 kg-2/3, was mass independent for most of the experimental conditions. The rabbits were able to maintain constant rectal temperature during cold or heat exposure only when previously acclimated to these temperature extremes. The increase in metabolic rate of cold-acclimated rabbits observed during cold exposure seemed to be too low to explain the maintenance of rectal temperature. The lower metabolic rate of heat-acclimated rabbits exposed to heat probably played an important role in preventing increased rectal temperatures. PMID- 3835987 TI - Oculomotor areas involved in the parasympathetic control of accommodation and pupil size in the marmoset (Callithrix jacchus). AB - The motoneurons of the oculomotor complex responsible for controlling accommodation and pupil size of the marmoset were identified by injecting horseradish peroxidase (HRP) into the ciliary ganglion. The anatomical organization of accommodation and pupil constrictor motoneurons was determined using electrical stimulation techniques. HRP-labelled cells were found through the whole length of the Edinger-Westphal nucleus (EW) and also just ventral to this nucleus in caudal sections. A projection from the antero-median nucleus to the ciliary ganglion could not be demonstrated. Electrical stimulation data showed that currents of less than 1 microampere applied inside the EW evoked accommodation responses. Pupil constriction responses, on the other hand, were evoked with weak currents at sites ventral to those in the EW generating accommodation at caudal and central levels. It was concluded that the EW was responsible for accommodation and areas containing HRP-labelled cells ventral to the caudal part of the EW were responsible for pupil constriction. PMID- 3835988 TI - Effects of previous REM sleep deprivation on the acquisition of different topographies of discriminated avoidance in the rat. AB - The effects of REM sleep deprivation (REMSD) for 96 h on discriminated avoidance learning were tested in rats using three different task topographies:in a jumping box, in a shuttle-box and bar-pressing. The same stimulus relationship and the same methodological controls with regard to the avoidance schedules and to the platform technique were employed. REMSD facilitated the acquisition of the jumping-box response, which was detectable at the end of the third session. REMSD did not interfere in the acquisition of the shuttle-box response since both the experimental and control groups met the criterion by concluding the eighth session without any observable difference in the analyzed parameters. With bar pressing, neither group reached the learning criterion (80% of avoidance responses throughout two consecutive sessions). We have related these results to the existing hypothesis that REM sleep stimulates the coding of all complex sequences of motor behavior which are necessary for innate behaviors and concluded that the reimbursement of the REM sleep debt after testing facilitated only the acquisition of the jumping-box response through a reprogramming of the motor organization of this innate behavior. PMID- 3835989 TI - Do platelets migrate into inflammatory exudates? AB - Rat platelets and the corresponding rabbit IgG antibodies mixed in polyester sponges implanted under the skin of normal animals caused an enhanced 24-h inflammatory response and a significant increase of prostaglandins in the exudate. These experimental results contrast with those obtained for normal rats implanted with sponges containing only IgG anti-platelet antibodies. The present experiments show that circulating platelets were not concentrated at the inflamed site and can hardly be considered of importance in acute inflammation. PMID- 3835990 TI - Proceedings of the 10th congress of the Sociedade Brasileira de Imunologia. March 2-4, 1985. Guaruja, SP. Abstracts. PMID- 3835991 TI - Proceedings of the 10th congress of the Sociedade Brasileira de Biofisica, 3rd congress of the Sociedade Brasileira de Farmacologia e Terapeutica Experimental, 20th congress of the Sociedade Brasileira de Fisiologia, 1st congress of the Sociedade Brasileira de Investigacao Clinica. July 6-10, 1985, Sao Paulo. Abstracts. PMID- 3835992 TI - [Medical professionalism and hospital organization. Crisis and metamorphosis of a relationship]. PMID- 3835993 TI - [The dynamic electrocardiogram in mitral valve prolapse]. PMID- 3835994 TI - [A new approach to the study of sinus node function: measurement of the refractory period]. PMID- 3835995 TI - Effects of training on the relation between heart rate and QT interval during dynamic exercise. PMID- 3835996 TI - [Influence of the angiographic collateral circulation on regional myocardial perfusion and contraction at rest and during exertion]. PMID- 3835997 TI - [Study of the diastolic phase with a radioisotopic method in coronary disease]. PMID- 3835998 TI - [Carotid sinus syndrome: evaluation of the cardioinhibitor and vasodepressive components and of the association with orthostatic hypotension]. PMID- 3835999 TI - [Systemic embolism in wearers of cardiac valve prostheses: predisposing factors and influence of anticoagulant therapy]. PMID- 3836000 TI - [Pathology of the atrioventricular node in mitral valve prolapse]. PMID- 3836001 TI - [Role of effort electrocardiography in the diagnosis of ischemic cardiopathy]. PMID- 3836002 TI - [Diagnostic value of echocardiographic markers]. PMID- 3836003 TI - [Diagnostic value of perfusion scintigraphy]. PMID- 3836004 TI - [The cardiologist confronted by the computer: how to choose it and what to ask it]. PMID- 3836005 TI - [Computerized analysis of heart electric signals: the standard electrocardiogram and complex derived technics]. PMID- 3836006 TI - [Computerized elaboration of echocardiographic images]. PMID- 3836007 TI - Role of computers in echocardiography. PMID- 3836008 TI - [Computerized elaboration of left ventriculography and coronarography]. PMID- 3836009 TI - [Relations between information specialists and cardiologists: proposals for a more constructive dialogue]. PMID- 3836010 TI - Antibody-induced suppression and postsuppression stimulation of complement in vitro. III. Long-term C4 suppression is actively maintained by a soluble suppressor factor (FsC4). AB - Previous work in our laboratory established that individual complement components can be regulated in vivo by administration of specific antibody or immunocompetent cells to newborns and in vitro by administration of specific antibody to cultured peritoneal macrophages or splenic fragments. Antibody induced suppression of C4 was much longer lasting in cultured guinea pig splenic fragments than in cultured guinea pig peritoneal macrophages, suggesting that splenic fragments contained elements necessary for long-term suppression that were not present in the macrophage monolayers. This publication presents data in support of this concept. Antibody-treated splenic fragments from normal guinea pigs--but not from C4-deficient guinea pigs--elaborated a soluble factor (FsC4) that suppressed C4 production in previously untreated splenic fragments. FsC4 activity was most potent in splenic fragment culture supernatants at those times when intracellular and secreted C4 hemolytic activity and C4 antigen were at their lowest. C4 itself or a fragment of C4 was therefore unlikely to mediate suppression in this system. Residual anti-C4 antibody was ruled out as a mediator of FsC4 activity since it was shown by two independent methods that the amount of anti-C4 antibody carried over with the supernatant was orders of magnitude less than the amount necessary to cause suppression or to neutralize fluid phase C4 in fresh splenic fragment cultures. Preliminary data revealed that FsC4 activity may be mediated by two or more distinct molecular species or may be mediated by a single molecule that exhibits secondary size and charge heterogeneity. The identification of factors that are capable of regulating C4 suggests that, as with immunoglobulins, complement components may be regulated by complex networks of immunocompetent cells and their soluble products. PMID- 3836011 TI - Neuronal survival or death after dendrite transection close to the perikaryon: correlation with electrophysiologic, morphologic, and ultrastructural changes. AB - We investigated the probability of survival of mouse spinal neurons in monolayer cultures after transection lesions of dendrites made within 400 microns of the perikarya. Based on a total of 650 lesioned neurons, the following observations were made. First, neuronal survival is a function of lesion distance from the perikaryon and of process diameter at the lesion site. For an average lesion diameter of 3 microns, dendrite transections at 50 microns, 100 microns, and 150 microns were associated with survival probabilities of 30%, 53%, and 70%, respectively. Second, the fate of the injured cells was definitely established 24 hours after injury and very likely was determined as early as 2 hours. Third, early stages of deterioration leading to cell death were associated with cytoplasmic phase brightness on light microscopy, correlating with an appearance of numerous, small, electron-lucent vacuoles and swollen mitochondria on electron microscopy. The cytoplasm of these moribund cells stained darkly and contained no visible microtubules or neurofilaments. Fourth, the magnitude and time course of injury potentials recorded at the somata were a function of the lesion distance and did not return to prelesion levels within 30 minutes after transection. Fifth, at 24 hours after injury, the average membrane potential of lesioned neurons was 8% below that of control neurons. Sixth, at a lesion distance of approximately 300 microns both the injury potential and the probability of cell death approach zero. We conclude that, in the model system used, neuronal survival after dendrite amputation depends on physical parameters of the lesion that determine the magnitude of the injury current reaching the soma. Survival is not assured if the injury is inflicted within 250 microns of the cell body, and cell death is likely for lesions within 50 microns of the soma. The below-normal membrane potentials at 24 hours after injury suggest a possible greater vulnerability of recovering neurons to secondary insults. The characteristic mitochondrial disruption and loss of microtubules implies that the calcium component of the injury current contributes to cell death. PMID- 3836012 TI - Lipid hydrolysis and peroxidation in injured spinal cord: partial protection with methylprednisolone or vitamin E and selenium. AB - Compression trauma of the cat spinal cord induces a very rapid alteration in the lipid metabolism of cellular membranes, including lipid hydrolysis with release of fatty acids including arachidonate, production of biologically active eicosanoids, and loss of cholesterol. This disturbance of cellular membranes can directly damage cells and can lead to the secondary development of tissue ionic imbalance, ischemia, edema, and inflammation with neuronophagia. Pretreatment with either the synthetic glucocorticoid methylprednisolone sodium succinate (MPSS) or the antioxidants vitamin E and selenium (Se) completely prevented the loss of cholesterol and partially inhibited lipolysis and prostanoid production. Treatment with MPSS significantly reduced the postinjury tissue necrosis and paralysis. Preliminary evidence indicates that pretreatment with vitamin E and Se also protected against the effects of spinal cord injury (SCI). We speculate that the ability of these agents to preserve function after SCI may, in part, reside in their capacity to limit the trauma-induced changes in lipid metabolism. PMID- 3836013 TI - Continuing axonal and vascular change following experimental brain trauma. AB - The course of axonal and vascular change following trauma was investigated in an animal model of fluid-percussion brain injury. To assess axonal change, the anterograde transport of horseradish peroxidase in selected cerebral and cerebellar efferents was studied in cats that had sustained minor to moderate injuries and had survived the traumatic episode for periods ranging from several hours to several months. To assess vascular change, cats were equipped with cranial windows, which allowed for both the direct functional study of the pial vasculature following injury and the postmortem harvesting of the studied vessels for morphologic analyses. Following fluid-percussion brain injury, a subtle focal perturbation of the axon occurred, and over a 12 to 24 hour period, this perturbation became progressively severe, with the result that the axon swelled, separated from its distal segment, and thereby formed an enlarged reactive swelling. With continued survival, some swellings persisted intact, others degenerated, and others demonstrated a dramatic regenerative response. This regenerative response, characterized by regenerative sprouting and growth conelike outgrowths, persisted through all survival periods considered. Immediately following the induction of the fluid-percussion injury, the pial arterioles dilated, manifested morphologic change, and displayed functional abnormalities. These vascular abnormalities appeared mediated by an accelerated metabolism of arachidonate via cyclooxygenase, which results in the generation of oxygen radicals. Radicals, such as the superoxide anion, continue to be produced within the first hour following injury and thus, similar to the observed axonal responses, continue to contribute to the brain's response to trauma. Although these axonal and vascular changes do not appear to be causally related, they both appear as a continuum of the initial insult and may become interlinked should a secondary insult ensue. PMID- 3836014 TI - Delayed demyelination and macrophage invasion: a candidate for secondary cell damage in spinal cord injury. AB - Recent studies of the chronic morphology and physiology of experimental spinal cord injury (SCI) in the cat are reviewed and their conclusions outlined. In particular, variations in chronic dysmyelination of the lesion have been found to be largely independent of injury intensity, suggesting a secondary pathologic origin. New morphometric studies of the subacute development of contusion lesions are described. Using electron microscopy and light microscopic line-sampling of myelinated axons, it was found that demyelination of axons that survived the initial injury occurred largely between 2 and 7 days after contusion and did not accompany the much more rapid dissolution of myelin from those axons that degenerated within the first 2 days. The number of apparently intact axons at the center of the lesion declined by a factor of 2 or more in the same interval of 2 7 days. This secondary pathology was coincident with dense invasion of the lesion by macrophages and their phagocytosis of the membraneous debris remaining from the initial hemorrhagic necrosis. It is concluded that posttraumatic inflammation in the spinal cord should be investigated in more detail as a possible contributor to chronic deficits. In addition, these data emphasize the importance of defining the nature, time of occurrence, and proportional significance of secondary damage in order to evaluate those studies and hypotheses that attempt to differentiate acute secondary pathophysiology from primary degenerative processes. PMID- 3836015 TI - Increased myosin orientation during muscle contraction: a measure of cardiac contractility. AB - Myosin form birefringence has been studied in cryostat sections of left ventricular myocardium from the dog and human. The muscle in such sections has been shown to demonstrate the sliding filament phenomenon. The sarcomere length of canine myocardium agreed with that found in comparable electron micrographs. Unexpectedly, it was found that glycerol, normally used as an inert and optically ideal mountant, caused profound change in myosin birefringence. This apparently invalidates results obtained with this mountant. The absolute birefringence found in these sections, whether mounted in glycerol or in an ATP-calcium buffer, corresponded to values found by other workers with skeletal muscle and isolated myosin. However, the birefringent properties (optical path difference: o.p.d.) of well functioning muscle was found to be low, the o.p.d. increasing when exposed to ATP and calcium. Poorly functioning muscle could be distinguished from well functioning muscle on the basis of its higher 'in air' o.p.d. This difference correlated well with physiological assessments of myocardial function or with clinical assessments of cardiac failure. Evidence is presented indicating that changes in apparent birefringence, caused by ATP-calcium or by anoxia, are due to altered orientation of the myosin micelles and can be inhibited by agents that inhibit myosin ATPase activity. PMID- 3836016 TI - The interaction of tumour-localizing porphyrins with collagen, elastin, gelatin, fibrin and fibrinogen. AB - We have already reported in Balb C mouse transplantable mammary carcinoma, that uroporphyrin I and III are superior as tumour localizers when compared to hematoporphyrin derivative and a derivative thereof, photofrin II. This study compares the binding of porphyrins to proteins which may be found in tumour cells or stroma to investigate whether there is a common binding determinant. Coproporphyrin III and deuteroporphyrin IX which are non-tumour localizing porphyrins, were also part of the comparative study. The interaction of these porphyrins with acid soluble collagen and acid insoluble collagen, elastin, and fibrin was evaluated, and the binding of uroporphyrin isomers I and III and deuteroporphyrin IX to gelatin and fibrinogen, was also determined. The results suggest that collagen, especially the acid soluble form, and gelatin preferentially bind the four porphyrins which localize in mammary carcinoma tissue. The well reported observations that malignant epithelial cells, including breast cancer, produce collagen and contain a rate-limiting enzyme in collagen biosynthesis would support the notion that de novo synthesis of this protein may in part govern the tumour uptake and retention of porphyrins. Elastin, fibrinogen and fibrin showed non-discriminant binding to the porphyrins under study. PMID- 3836017 TI - Lysosomal enzymes in human platelets. AB - In human freshly prepared platelets the following lysosomal enzymes were studied: alpha-mannosidase, alpha-fucosidase, beta-galactosidase, beta-glucosidase, beta glucuronidase, beta-N-acetylglucosaminidase and acid phosphatase. For each of the examined enzymes the conditions providing maximal activity (pH, buffer), kinetic parameters (saturating substrate concentration and Km) as well as heat stability were established. On the basis of these parameters it is suggested that many of the serum glycohydrolases may be platelet derived. PMID- 3836018 TI - Studies on mechanisms of ornithine decarboxylase activity regulation in regenerating liver. AB - Rat liver (hydrocortisone-induced) ornithine decarboxylase has been shown to be stable when the cytosolic fraction is incubated alone at 37 degrees C, although there is a very rapid and drastic loss of activity after addition of microsomes to the incubation medium. The present paper is concerned with the behaviour of ornithine decarboxylase induced in rat liver by a growth stimulus (partial hepatectomy); comparative studies have been carried out on the enzyme induced by sham operation, or by hydrocortisone. Results show that ornithine decarboxylase from regenerating liver is more stable when incubated with microsomes (from the same source); this higher stability depends both on a lower microsome-bound inactivating capacity and a limited susceptibility of the enzyme to the inactivation. A critical role in modulating the microsome-dependent inactivation appears to be played by low molecular weight cytosolic factors, whose greater content in regenerating liver is likely to be included with the factors above in determining the relative stability of ornithine decarboxylase. PMID- 3836019 TI - Induction of plasma membrane alkaline phosphatase in rat liver. AB - We have determined alkaline phosphatase activity in total liver plasma membrane fractions from rats subjected to a partial hepatectomy and sham operated with or without manipulation of the liver. In all these cases, an increase of the enzyme activity was observed. Kinetic studies of alkaline phosphatase activity performed on plasma membrane fractions from rats subjected to a partial hepatectomy suggest that alkaline phosphatase increase is produced by de novo biosynthesis of enzyme molecules. Determination of alkaline phosphatase activity in purified plasma membrane subfractions corresponding to each of the three functional regions of the hepatocyte surface (blood sinusoidal, lateral and bile canalicular), indicates that the increase of the enzyme activity observed after partial hepatectomy is selectively induced in the bile canalicular domain of the hepatocyte plasma membrane. PMID- 3836021 TI - The interaction between gluconeogenic metabolism and accumulation of phosphate by chick kidney tubule cells. AB - Pyruvate promotes both phosphate uptake and glucose synthesis by isolated chick kidney proximal tubule cells. 3-Mercaptopicolinate inhibits both glucose synthesis and the promoted phosphate accumulation to the same extent. Glycerol also stimulates glucose synthesis, but does not affect phosphate accumulation. Oxygen utilization by the tissue is slightly stimulated by glycerol and pyruvate, but the enhancement of uptake by pyruvate is unlikely to result from raised cellular oxidative phosphorylation. The action of pyruvate is not a direct effect on the phosphate transporter, or on the transport of phosphate across the basolateral membrane, but entails an obligatory flux to triose phosphate. PMID- 3836020 TI - Hormone-independent polyamine metabolism of squamous cell carcinoma of the prostate. AB - The levels of polyamines and their synthesizing enzymes in squamous cell carcinoma of prostate implanted in intact as well as castrated male rats were determined after certain hormonal manipulations. The tumour was found to grow with an identical rate in non-castrated and castrated rats. Polyamine content and activities of polyamine synthesizing enzymes in the tumour were found to be much lower compared to their values in ventral prostate. Moreover, the levels of these parameters were comparable in tumours whether implanted in non-castrated or gonadectomized animals. The sequential analyses of putrescine and spermidine and activities of L-ornithine decarboxylase and S-adenosyl-L-methionine decarboxylase of tumours at different time intervals showed a significant reduction in their levels at 30 days compared to 10 days post implantation in non-castrated as well as castrated rats. Daily intramuscular administration of tumour-bearing intact or castrated animals with testosterone (50 micrograms/g), beta-estradiol (2 micrograms/g) or cyproterone (12.5 micrograms/g) for 10 days did not influence polyamine metabolism in tumour tissue. However, either beta-estradiol and cyproterone treatments or castration were found to decrease polyamine synthesis in ventral prostate. At the same time, the testosterone replacement therapy did not allow polyamine levels or activities of polyamine synthesizing enzymes to decline in the ventral prostate of castrated rats. Our results demonstrated that contrary to ventral prostate, the polyamine metabolism in squamous cell carcinoma of prostate is independent of hormonal control. The loss of hormonal sensitivity of polyamine metabolism in the prostatic tumour could be the result of qualitative changes that occurred during transformation. PMID- 3836022 TI - Morphological changes in CHO and VERO cells treated with T-2 mycotoxin. Correlation with inhibition of protein synthesis. AB - Exposure of Chinese hamster ovary and African green monkey kidney cells to T-2 mycotoxin resulted in several morphological changes which were related to inhibition of protein synthesis, the basic in vitro mechanism of action of the toxin. These changes, which occurred in both cell types, included disassociation of polysomes and mitochondrial cristae alterations. In addition, CHO cells displayed membrane bleb formations similar to those found in CHO cells after exposure to established inhibitors of protein synthesis, puromycin and anisomycin. Blebs could be either a result of protein synthesis inhibition or a non-specific early pathological response. Bleb formations were not observed in VERO cells under any experimental condition. PMID- 3836023 TI - Role of transferrin in metal uptake by human lymphoblasts in vitro. AB - The uptake and binding of 59Fe, 67Ga and 239Pu complexed with citrate of transferrin (Tf) and of 125I-labelled Fe-Tf by human lymphoblasts (WI-L2 cells) have been studied. Uptake kinetics of 59Fe-Tf and [125I]-Tf point to internalization by receptor mediated endocytosis. 67Ga binding and uptake is always less. This may be explained by a lower affinity of Ga-complexes for the cell surface. Factors which influence Fe uptake have a similar effect on Ga. 239Pu uptake and binding, however, are different, especially in that Tf does not stimulate 239Pu uptake and may actually decrease it. PMID- 3836024 TI - Formation of activated oxygen in the hypoxic rat liver. AB - The biliary GSSG efflux rate of normoxic perfused rat liver was 1.5 +/- 0.2 nmol/min/g liver wet weight. The GSSG efflux rate as indicator for the flux through the glutathione peroxidase reaction and, therefore, for an oxidative loading increased with the extent of hypoxia. 2.6 +/- 0.5 nmol/min/g were released from the severely hypoxic liver. The hydroxyl radical scavenger formate as well as the xanthine oxidase inhibitor allopurinol reduced the efflux rate of GSSG. GSH was released from the perfused liver at a rate of 15.5 nmol/min/g which was nearly unchanged in severe hypoxia. The high rate of glucose liberation from the hypoxic liver declined to almost that of the normoxic organ in the presence of formate. There is an 'oxidative stress' during hypoxic liver perfusion which probably originates from increased generation of activated oxygen species in the degradation of purine nucleotides. PMID- 3836025 TI - The significance of plasma gastrointestinal glucagon in endotoxemia. AB - Hyperglucagonemia has been reported during endotoxemia. Increases in plasma glucagon concentration may serve as an important mediator and be influential in modifying metabolism during endotoxin shock. Increases in the plasma concentration of glucagon are brought about by both pancreatic and gastrointestinal release of glucagon during endotoxemia. The purpose of the present study was to determine the importance of gastrointestinal-derived glucagon (glucagon-like immunoreactivity; GLI) during endotoxin shock. LD100 endotoxin (3.0 mg/kg) was injected via the auricular vein into fasted rabbits. Emphasis was focused on total glucagon and gastrointestinal glucagon (GLI) concentrations, but measurements of these parameters were supplemented by determinations of glucose and triglyceride. The results were as follows: 1) gastrointestinal glucagon concentration increased threefold over that of pancreatic glucagon concentration and 27-fold over that of the control group at 6 hr after endotoxin administration and 2) significant increases of both serum glucose and triglyceride concentrations were observed after endotoxin was injected. Findings suggest that gastrointestinal glucagon may be one of the factors responsible for evoking the abnormal metabolism caused by endotoxin shock. In hyperglucagonemia resulting from endotoxemia, it is suggested that attention should be paid not only to the glucagon originating from the pancreas but also to that derived from the intestine. PMID- 3836026 TI - Effects of ATP-MgCl2 and ATP-Na2 administration on renal function and cellular metabolism following renal ischemia. AB - The present study compared the effects of ATP-MgCl2 or ATP-Na2 administration on renal function and cellular metabolism following renal ischemia in rabbits. Following 100 min of ischemia, the blood flow to the kidney was allowed to reestablish itself, and the rabbits received either saline, ATP-MgCl2 (17.5 mumole/kg each), or ATP-Na2 (17.5 mumole/kg) intravenously. ATP-MgCl2 administration following ischemia significantly accelerated the recovery of renal function. However, administration of ATP-Na2 failed to show any beneficial effect on the recovery process. The changes in renal cellular ketone body ratio (acetoacetate/beta-hydroxybutyrate), energy charge, and pyruvate/lactate indicated that ATP-MgCl2, but not ATP-Na2, reversed ischemically induced impairment in renal cellular metabolism. Reduction in the renal blood flow caused by ischemia was also improved with ATP-MgCl2 treatment. These results indicate that ATP should be given in the form of ATP-MgCl2 for it to be effective following renal ischemia. The results also suggest that the salutary effect of ATP-MgCl2 following renal ischemia could occur through the improvement of cellular metabolism and concomitant improvement in tissue blood flow. PMID- 3836027 TI - Naloxone potentiates the cardiovascular effects of catecholamines in canine hemorrhagic shock. AB - Endogenous opioids are released during stress and appear to contribute to the cardiovascular suppression seen in shock. When the opiate receptor antagonist naloxone is administered intravenously to anesthetized dogs subjected to hemorrhage, mean arterial pressure, maximal left ventricular dp/dt, and cardiac output increase. This study tests the hypothesis that naloxone acts by potentiating the effects of neurally and adrenally released catecholamines. If this hypothesis is correct, then blockade of endogenous catecholamine release should attenuate the response to naloxone, and administration of exogenous adrenergic agonists prior to naloxone treatment should restore the response. Catecholamine release was attenuated by a combination of surgical adrenal denervation and pharmacological ganglionic blockade. Adrenal denervation or chlorisondamine alone attenuated and, in combination, blocked the response to naloxone in hemorrhaged dogs. Infusion of alpha- and beta-adrenergic agonists at a constant rate prior to treatment restored the response to naloxone. Naloxone appears to improve cardiovascular function in hemorrhagic shock by potentiating the effect of released catecholamines and not by increasing sympathoadrenal discharge. PMID- 3836028 TI - Influence of tissue lactic acid and ATP levels on postischemic recovery in rabbit skeletal muscle. AB - The effect of energy substrate depletion and of high lactic acid (LA) load on the development of irreversible cell injury was evaluated in the lateral gastrocnemius muscle of rabbits subjected to 4 hr of tourniquet hindlimb ischemia. Three groups of animals were studied. Group I, high ATP-ischemia, these animals were subjected to 4 hr of ischemia; group II, low ATP--low LA ischemia, in this group the gastrocnemius muscle was electrically stimulated for 5 min during ischemic conditions to reduce the glycogen store, a short reperfusion period was allowed after the stimulation in order to wash out the built up LA, and the muscle was then subjected to 4 hr of ischemia; group III, low ATP--high LA ischemia, in this group glycogen was depleted as in group II, but no reperfusion period was allowed before the 4 hr period of ischemia. In group I, ATP levels were well preserved during the ischemic period, whereas in the substrate-deprived groups (II and III) a rapid depletion of ATP and phosphocreatine (CP) occurred. The LA was twice as high in the "high LA" group (III) as in the "low LA" group (II) during the ischemic period. The extent of injury was evaluated after 24 hr of reperfusion by measuring ATP and CP content, and contractile force and by light microscopy. No or minor cell damage was found in group I. In group III--high LA--no recovery was obtained in any of the variables used for evaluation. In group II--Low LA--there was a certain recovery. ATP and CP increased to about 35% and contractile force to 25% of control. Morphologically about 20% of the muscle cells appeared to be unaffected by the ischemic insult. It is concluded that reduction of the glycogen available for ATP resynthesis during the ischemic period drastically reduces the ability of skeletal muscle to withstand prolonged ischemia. A high LA load seems to amplify the deleterious effects of a low initial substrate level. PMID- 3836029 TI - A more appropriate statistical method for analyzing mortality data in shock research. AB - Much of biological research deals with analysis of survival times such as time until death of an organism, length of survival of a skin graft, time of remission of an illness, or time until relief of a particular symptom. When analyzing data that consists of time until occurrence of an event, the commonly used parametric t-tests for comparing mean survival times of treatment groups is inappropriate when 1) the survival times do not follow the bell-shaped Gaussian (normal) distribution and/or 2) when some of the organisms are still "alive" (censored) at termination of the study period. As an alternative to the t-test, a relatively simple-to-use statistical procedure for comparing survival times of two groups is described. This procedure was developed to deal specifically with data consisting of survival times and to take into account the presence of censored observations. PMID- 3836030 TI - Tandem-scanning (confocal) microscopy of the full-thickness cornea. AB - We have utilized a radically new type of optical scanning microscope to study the full-thickness morphology of the intact cornea in an excised human eye bank eye and in freshly sacrificed rabbit eyes in situ. This technology enables one to study corneal morphology layer by layer in extremely thin sections, only disturbing the tissue with an applanating tip. We have demonstrated the cells of the corneal surface, subsurface cells, the topography of Bowman's membrane, corneal lamellae, stromal keratocytes, and the corneal endothelium. The application of this technology lends itself to the in vivo examination of the human cornea. This should aid us greatly in the study of normal morphology, disease states, and the reaction of the cornea in wound healing. PMID- 3836031 TI - Schematic documentation of cornea and anterior segment problems in clinical practice. AB - Corneal and external eye diseases are often present together. Pathologic processes in the cornea may be secondary to lesions involving the eyelids, tear meniscus, and conjunctiva, and all structures in the anterior segment may manifest clinical phenomena. We describe a method of recording diagrammatically corneal findings along with eyelids, eyelashes, tear meniscus, and anterior segment structures. PMID- 3836032 TI - Graphite foreign body of the conjunctiva simulating melanoma. AB - A case of a growing vascular pigmented mass of the conjunctiva resembling a melanoma in a patient with a history of a pencil injury to the eye is presented. The lesion was surgically removed and histopathologically found to be a graphite foreign body granuloma. In the differential diagnosis of enlarging pigmented conjunctival lesions, graphite foreign body granuloma should be considered. PMID- 3836033 TI - Polack corneal punch with modified teflon-base plug. PMID- 3836034 TI - [Experimental studies of the pathomechanics of humeral shaft fractures during isolated torsion]. PMID- 3836035 TI - [Pathomechanism of dislocation of the shoulder joint with humeral neck fracture]. PMID- 3836036 TI - [Differentiation between congenital and post-injection extension contractures of the knee joint in children]. PMID- 3836037 TI - [Radiological evaluation of pes planus taloflexus congenitus]. PMID- 3836038 TI - [Pes planus taloflexus congenitus--results of surgical treatment by the method of peritalar repositioning]. PMID- 3836039 TI - [Late observations of the joints after Legg-Perthes disease]. PMID- 3836040 TI - [Rehabilitation of patients after thoracic spine injury treated by the spring alloplasty method]. PMID- 3836041 TI - [The vascular system of the gastrocnemius muscle in contrast studies of anatomical specimens]. PMID- 3836042 TI - [Dysplasia epiphysealis hemimelica--congenital developmental disorders of the epiphyses]. PMID- 3836043 TI - [Rubinstein-Taybi syndrome]. PMID- 3836044 TI - [Solitary cyst of the ilium]. PMID- 3836045 TI - [Pachydermoperiostosis]. PMID- 3836046 TI - [Recurrent ulcer after supraselective vagotomy for duodenal ulcer. What is the cause: the preoperative acidity, the method or the surgeon?]. PMID- 3836047 TI - [Spontaneous bilateral avulsion of the quadriceps tendon (a case) and simultaneous bilateral rupture of the patellar tendon (a case). Problems of the surgical technic]. PMID- 3836048 TI - [War colonic wounds treated by ideal surgery. Apropos of 47 cases]. PMID- 3836049 TI - [Tumors of the inferior vena cava. Diagnosis and treatment. Apropos of a case with review of the literature]. PMID- 3836050 TI - [Very late dehiscence of a mechanical colorectal anastomosis. Report of a case and review of the literature. Experimental approach to the late complications of circular stapling]. PMID- 3836051 TI - [Cutaneo-aponeurotic flaps]. PMID- 3836052 TI - [Treatment of acute intestinal intussusception in infants. Hydrostatic enema or routine operation?]. PMID- 3836054 TI - [Splenic autotransplantation. An advantageous alternative to splenectomy for splenic injury]. PMID- 3836053 TI - [Hypoplasia and aplasia of the ulna in children. Internal longitudinal ectromelia of the arm. Study of 38 cases in 31 children]. PMID- 3836055 TI - [Prognostic factors in rectal cancer. Retrospective studies on 306 surgically treated patients]. PMID- 3836057 TI - [Transhiatal esophagectomy. Technics and indications]. PMID- 3836056 TI - [Computer-assisted prognostic study of 77 thyroid vesicular cancers]. PMID- 3836058 TI - [Duodenal duplication in adults. Apropos of a case. Review of the literature]. PMID- 3836059 TI - [Prognostic factors based on the evaluation of non-cancer clinical elements in emergency surgery in colonic oncology]. PMID- 3836060 TI - [Pharyngo-esophagoplasty with free jejunal transplant. Apropos of 43 cases (cancer or benign lesions). Technics. Results. Indications]. PMID- 3836061 TI - [Anaplastic cancer of the thyroid body (54 cases). Apropos of 32 cases]. PMID- 3836062 TI - [Solitary ulcer of the rectum. Lessons and questions from the study of 12 new cases]. PMID- 3836063 TI - [Total prostheses with external cortical support]. PMID- 3836064 TI - [Closed traumatic lesions of the thoracic wall. Development of therapeutic concepts]. PMID- 3836065 TI - [Hospital care of traumatologic emergencies]. PMID- 3836066 TI - [Transhiatal esophagectomies]. PMID- 3836067 TI - Why Diagnostic Cytopathology? The birth of a new journal. PMID- 3836068 TI - Aspiration biopsy of the lymph node--yea or nay. PMID- 3836069 TI - Lymph node aspiration biopsy. Diagnostic reliability and limitations--an analysis of 350 cases. AB - The results of fine needle aspiration biopsy of lymph nodes in 350 patients and the modified biopsy technique used at our institution are discussed. Of the 350 cases, 209 aspirates were categorized as cytologically malignant, 102 as benign, 30 as suspicious for malignancy, and 9 as unsatisfactory. Cervical lymph nodes were most commonly sampled (58%), and supra-clavicular nodes were most likely to be malignant (90%). The overall diagnostic accuracy achieved was 94%. One false positive and 9 (2%) false-negative results were observed in the 350 cases. In 3% of the 30 cases diagnosed as suspicious for malignancy, follow-up open biopsy of the lymph nodes in question proved them benign. The advantages and limitations of the procedure are discussed, as well as some of the possible sources of error, particularly in the diagnosis of lymphomas. PMID- 3836070 TI - Interpretation of endometrium obtained by the Endo-pap sampler and a clinical study of its use. AB - Endometrical cytology sampling using the Endo-pap sampler is an inexpensive, painless, and simple procedure. Tissue microfragments obtained include surface epithelial sheets, gland segments, and stromal cell aggregates. Gland segments are critical for evaluation of the sample. Glands are dilated in hyperplasia and there is nuclear crowding with increase of chromatin and nucleoli. In adenocarcinoma there is loss of glands with marked nuclear enlargement and pleomorphism. An understanding of endometrial histomorphology and its correlation with cytology is essential for accurate interpretation. In 1027 ambulatory patients screened, no complications were observed and 92% of the samples were adequate for cytologic diagnosis. Tissue diagnosis was obtained in 173 cases. There were 36 adenocarcinomas, of which 34 (94%) were diagnosed cytologically. There were 16 hyperplasias, of which 5 (31%) were diagnosed cytologically. The Endo-pap sampler was found effective in detecting endometrial adenocarcinoma. Further studies are needed to determine its diagnostic effectiveness in hyperplasia. PMID- 3836071 TI - Thyroid fine needle aspiration in pregnant women. PMID- 3836072 TI - The adequate Papanicolaou smear revisited. AB - The reliance on the Papanicolaou smear as a screening and diagnostic test for uterine cancer and its precursors infers that appraisal of the specimen's adequacy is based upon a uniform standard of quality. The presence or absence of endocervical cells in cervical samples has been suggested as one measure of a specimen's adequacy. Not all Cytologists are satisfied with the reliability of this criterion, however. On-going studies are indicated to determine those factors which are critical to the evaluation of the adequacy of these specimens. PMID- 3836073 TI - Smearing techniques for the concentration of particles from fine needle aspiration biopsy. AB - Fine needle aspiration biopsy of palpable masses yields a variety of specimens. Some are fluid, whereas others are semisolid; some contain numerous particles, whereas others contain no identifiable particulate fragments. Not surprisingly, no single smearing technique can reasonably be expected to provide good results with such a variety of specimens. This article describes a family of techniques, of which one or more are applicable to virtually any fine needle aspiration biopsy specimen. The techniques described and illustrated include the two-step, one-step, absorption, and watch-glass techniques. PMID- 3836074 TI - Osteoclastic giant cell tumor of the pancreas. Aspiration cytology, light microscopy, and ultrastructure with review of the literature. AB - The osteoclastic giant cell tumor of the pancreas is a rare primary neoplasm that by light and electron microscopy mimics giant cell tumor of bone. In the proper clinical setting, this lesion can be diagnosed by fine needle aspiration. Review of 10 cases reveals a female predominance, a median survival of 12 months, and a tendency for local invasion, rather than lymphatic or distant metastasis, and for invasion of large veins. An epithelial origin is favored for this malignant neoplasm, which expresses varying degrees of mesenchymal differentiation. PMID- 3836075 TI - Giant cell tumor of bone. A cytologic study of 24 cases. AB - Twenty-three patients with radiologic diagnoses of giant cell tumor of bone underwent fine needle aspiration cytology and needle biopsy for tissue diagnosis before curettage or resection. One patient had two tumors, making a total of 24 cases. The accuracy of the cytologic diagnosis was compared with that of tissue biopsy. Cytologically there were mononucleated and multinucleated cells. The former often occurred in clusters or, less often, were dispersed. They had spindle or plump cell bodies with moderate amounts of cytoplasm and well-defined cytoplasmic membranes. The oval nuclei demonstrated fine, evenly distributed chromatin and small nucleoli. The multinucleated cells were osteoclastlike and were associated with the clusters of mononucleated cells or lying freely. They had a well-demarcated cytoplasm and contained from a few to several dozen monomorphic nuclei. Cytologic diagnosis was made in 20 of 24 cases, and histologic diagnosis was made in 21 of 24. Insufficient diagnostic material for cytology was the reason for failure in 4 cases. This was attributed to faulty technique (2 cases), cystic change (1 case), and massive necrosis (1 case). As other benign and malignant bone tumors may contain benign giant cells, cytologic or histologic findings alone are not diagnostic of giant cell tumor of bone, but should be complemented with the clinicoradiologic findings. Aspiration cytology is as accurate as tissue needle biopsy, may be of high diagnostic value in deeply located lesions not amenable to cutting needle biopsy, and should be done with full knowledge of the clinicoradiographic information. PMID- 3836076 TI - Pineal germinoma with widespread extracranial metastases. AB - A case of primary pineal germinoma with widespread extracranial metastasis in a 36-year-old man is presented. A clinical work-up revealed bilateral pleural effusions, ascites, and metastatic lesions involving the lung. Cytology and electron microscopic study of the pleural and ascitic fluid and of the fine needle aspiration material revealed metastatic germinoma. Although the cytologic features were not distinct from those of anaplastic carcinoma, they were distinguishable from those of glial neoplasms, lymphoma, and sarcoma. The computed tomography findings, elevated human chorionic gonadotropin level, and electron microscopic features contributed significantly to the diagnosis of extracranial metastasis of the pineal germinoma. Metastatic spread most likely occurred via the ventriculoperitoneal shunt. PMID- 3836077 TI - Mucinous metaplasia in scar endometriosis. Diagnosis by aspiration cytology. AB - The clinicopathologic features of a case of scar endometriosis are presented. The lesion is unusual in that it occurred in a black woman following tubal surgery for ectopic pregnancy. The case appears to be unique in that the endometriotic focus was characterized by the presence of mucinous metaplasia. Diagnosis of this histopathologic curiosity was made by fine needle aspiration cytology. PMID- 3836079 TI - Chondroid chordoma of the skull base diagnosed by squash-smear technique. AB - Squash-smears of tissue from a chondroid chordoma arising from the skull base of a 26-year-old white man showed numerous single and clustered physaliferous cells with multiple intracytoplasmic vacuoles, and atypical cartilaginous cells in an amorphous myxoid background. PMID- 3836078 TI - Fine needle aspiration of osteitis fibrosa cystica. AB - The cytology findings of a fine needle aspiration biopsy from osteitis fibrosa cystica (brown tumor) of the rib in a patient with primary hyperparathyroidism due to parathyroid carcinoma are discussed. Many multinucleated osteoclast-type giant cells, characteristic of either osteitis fibrosa cystica or benign giant cell tumor of bone, were noted. There were also spindly or fibrillary cells with single, ovoid nuclei, probably of stromal origin. PMID- 3836080 TI - Aspiration cytology of soft tissue and bone. PMID- 3836081 TI - Cytologic negativity in the diagnosis of secondary pulmonary neoplasms. AB - This retrospective study consisted of 55 patients with histologically confirmed metastatic cancer to the lung. Cytologic specimens were collected within 45 days before death. These included bronchial secretions, pleural effusions, and fine needle aspirations obtained randomly, either singly or in various combinations. The cytodiagnosis of cancer was made in 58% (32/55) of the patients. Originally, 34% (11/32) of these had been false-negative cases. Morphologic features associated with cytologic negativity in 23 patients included apparent failure to invade the respiratory air compartment in 57% (13/23) of the cases; when applicable, failure to induce a pleural effusion with neoplastic invasion of pleural tissues in 75% (6/8); peripheral distribution of the metastatic nodules to the outer third of the pulmonary parenchyma in 26% (6/23); and tumor size of less than 1.5 cm in 57% (13/23). PMID- 3836082 TI - Cytopathology of mesenchymal repair. AB - Tissue repair is a common biologic process closely associated with the inflammatory response. The cytologic features of regeneration and repair of epithelial surfaces have been intensely studied and documented. Regeneration and repair occur in mesenchymal tissues and their radiographic and cytologic findings may closely simulate malignancy. This paper reviews the cytologic features of mesenchymal repair as seen in 44 aspiration biopsy specimens of bone, skeletal muscle, fibroadipose tissue, and fibrous connective tissue. In general, cytologic specimens from such lesions display variable but often scanty cellularity, prominent cellular heterogeneity with a spectrum of atypical features, an admixture of reactive fibroblasts, and evidence of a coexisting inflammatory reaction. Careful attention to cytologic detail and review of clinical and radiographic findings are mandatory in the evaluation of these specimens. PMID- 3836083 TI - Pulmonary cytopathology. The crossroad is here. PMID- 3836084 TI - Urinary cytology in diagnostic pathology. AB - In summary, the place of urinary cytology in diagnostic urologic pathology is now established. Recent emphasis on topical chemotherapy for superficial bladder neoplasms has made cytologic examination of urinary specimens essential for good patient care. Renewed interest in the method has resulted in improved preparations and diagnostic criteria. Important pitfalls in cellular analysis have been identified. New technologies, advances in therapy, and changes in classification will require continual adjustments in our approach to urinary cytology and the diagnostic cytopathologist should remain flexible while acquiring expertise in this area. PMID- 3836085 TI - Cytopathology of asbestos-associated pulmonary disease. AB - The goal of this investigation was to determine the practical role of cytopathology in the clinical and laboratory diagnosis of asbestos-related pulmonary diseases. For this purpose, sputum, bronchial washings, lung tissues, and pleural fluids were obtained from asbestos workers and controls. The asbestos associated pulmonary diseases studied were: (1) asbestosis, (2) carcinoma, and (3) mesothelioma. The cytology smears were prepared with both Papanicolaou and iron stains. Lung tissues were digested by the Chlorox (5.25% sodium hypochlorite solution) technique for quantitation of asbestos bodies. Asbestos bodies within the sputum were found to be highly specific markers for past asbestos exposure, indicating a heavy residual pulmonary asbestos load (greater than 900 asbestos bodies/g wet lung weight). Asbestos bodies in sputum were also found to have a highly significant relationship (P less than 0.001) with the degree of accompanying atypia of bronchial epithelial cells. Bronchial washings appeared to be more sensitive than sputum for the detection of asbestos bodies. Asbestos bodies were not found within the pleural fluids of malignant mesotheliomas. It is concluded that sputum cytology screening represents a practical, noninvasive, and inexpensive approach to the diagnosis and study of asbestos exposure. PMID- 3836086 TI - Effective use of bronchoscopy and sputa in the diagnosis of lung cancer. AB - The records of 134 patients who underwent bronchoscopy at the Forbes Health System hospitals between January 1, 1982 and December 31, 1983 were reviewed. The number of pre- and postbronchoscopy sputa obtained on each patient, final diagnosis, and follow-up for 6 to 30 months were obtained. Tissue obtained at bronchoscopy yielded a diagnosis of malignancy in 71 of 84 (84.5%) patients who received that final diagnosis. Addition of postbronchoscopy sputa examination increased the yield to 73 of 84 (86.9%). Prebronchoscopy sputa contributed no diagnoses beyond those made by bronchoscopically obtained material. The cost to the patient of examining pre- and postbronchoscopy sputa in addition to bronchoscopically obtained cytologic and biopsy material is 70% higher than that of examining bronchoscopically obtained material alone. Indirect costs of increased hospital stay may also be significant. We propose early bronchoscopy without prebronchoscopy sputa in cases where there is clinical suspicion of lung cancer. Postbronchoscopy sputa should be obtained, but only processed for microscopic examination if the bronchoscopically obtained material does not yield a diagnosis. PMID- 3836087 TI - Gastric remnant cancer after Billroth II procedure. AB - Six cases of gastric remnant cancer that occurred many years after Billroth II gastrectomy and gastrojejunostomy for benign disease are reported. They are classified as intestinal type and gastric type on the basis of their morphologic appearance. Their cytologic and histologic features are tabulated along with a summary of the clinical histories. Emphasis is placed on the possible high risk for patients with Billroth II procedures of developing cancer 10 to 25 years after surgery. Endoscopic follow-up including cytologic study is essential to diagnose gastric remnant cancer in its early stage to secure a better prognosis. PMID- 3836088 TI - Transthoracic fine needle aspiration of primary and metastatic sarcomas. AB - Sarcomas, excluding lymphomas, are relatively uncommon targets of transthoracic fine needle aspiration. This paper presents a series of 11 adult patients with a variety of histologically documented sarcomas that were positive on transthoracic fine needle aspiration. Most tumors were metastatic from extrathoracic primary sites. We summarize the cytologic appearances of the aspirates and the clinical roles of fine needle aspiration in this setting. The aspirates resembled the corresponding histologic sections in cellular morphology. Nine different histologic types of sarcomas therefore produced a wide variety of cytologic appearances. Two findings, though not specific for sarcomas, were common and are suggested as clues to the recognition of sarcomas: (1) poor cohesion of cells and (2) numerous spindle cells. Transthoracic fine needle aspiration confirmed a strongly suspected clinical diagnosis in 7 cases, and it clarified a more obscure clinical diagnosis in 4 cases. Suggestions are presented for differential diagnosis. PMID- 3836089 TI - Occurrence of cilia in exfoliated ovarian adenocarcinoma cells. AB - Cilia identifiable by light microscopy occur extremely rarely in malignant tumor cells. This report documents the presence of cilia on exfoliated malignant tumor cells shed from an ovarian adenocarcinoma. Cilia-bearing tumor cells were observed in abdominal and pleural fluids. These cilia occurred at atypical locations. They were observed as unipolar, bipolar, lateral, and pericellular structures. Diagnostic features and implications of cilia in relation to malignant cells are discussed. PMID- 3836090 TI - Functional parathyroid carcinoma. Cytology, histology, and ultrastructure of a case. AB - A case of a functional parathyroid carcinoma that recurred 1 year after being resected is presented. The clinical and laboratory data and the histologic structure are presented with confirmatory electron microscopy. The preoperative aspiration biopsy showed findings suggestive of parathyroid carcinoma although simultaneous core biopsy results were reported as parathyroid adenoma. The differential cytologic diagnosis with thyroid neoplasms is discussed. PMID- 3836091 TI - Fine needle aspiration cytology of myositis ossificans. AB - Fine needle aspiration was performed on a large soft tissue mass of the left thigh and hip region in a 27-year-old paraplegic man. Cytologic examination revealed sheets of immature fibroblasts and scattered skeletal muscle cells in various stages of degeneration compatible with myositis ossificans. This case is probably the first needle aspiration cytology of this lesion. The danger of confusing the cytology with that of a sarcoma is emphasized. PMID- 3836092 TI - Clinician perception of fine needle aspiration cytology. AB - Private practitioners in San Francisco were surveyed about their perceptions of fine needle aspiration cytology. The overall response rate was 60% (369/614). The responding group was uncertain about the utility of fine needle aspiration cytology in several specific clinical settings, but 83% (307/369) believed fine needle aspiration cytology will be used more extensively in the future. PMID- 3836093 TI - New payment systems: a brilliant opportunity for cytology. PMID- 3836094 TI - Application of monoclonal antibody 44-3A6 in the cytodiagnosis and classification of pulmonary carcinomas. AB - Thirty-five pulmonary carcinomas were studied retrospectively with monoclonal antibody (MCA) 44-3A6 raised against a human adenocarcinoma cell line. The antibody was applied to cytologic smears of bronchial brushings originally stained with the Papanicolau method, and to conventional tissue sections. Ten of 12 adenocarcinomas (ADC) immunostained strongly in sections and smears, as did five of seven large-cell "undifferentiated" carcinomas (LCUC). Eight neuroendocrine carcinomas (NEC) and eight squamous-cell carcinomas (SCC) were negative, except for rare weakly positive foci. We conclude that MCA 44-3A6 can be effectively applied on cytologic smears, and that it could be valuable in the precise classification of pulmonary carcinomas. The immunoreactivity of the ADC and SCC was predictable. Positive immunostaining in some LCUC confirms that these constitute a heterogeneus tumor class that includes cases that are phenotypically ADC despite the absence of obvious glands. Occasional immunostaining in NEC suggests focal exocrine differentiation as previously noted by electron microscopy. PMID- 3836095 TI - Esthesioneuroblastoma: cytologic features with differential diagnostic considerations. AB - A case of recurrent esthesioneuroblastoma was diagnosed by fine-needle aspiration of a midcervical mass. The cytologic features that characterize this uncommon neoplasm include uniform, small, round-to-oval cells with coarsely granular chromatin, multiple small nucleoli, prominent nuclear membranes, and scant cytoplasm. Morphologically and ultrastructurally, esthesioneuroblastoma cells resemble those of sympathetic neuroblastomas. Both tumors show rosette formation and minimal cellular pleomorphism, and, by electron microscopy, dense-core cytoplasmic granules can be identified. The cytologic recognition of esthesioneuroblastoma is important since it metastasizes to cervical lymph nodes accessible to fine-needle aspiration biopsy. In addition, the histogenesis of this unusual neuroectodermal tumor and its behavior are discussed. PMID- 3836097 TI - XII Congress of the International Diabetes Federation. Madrid, Spain, 23-28 September 1985. Abstracts. PMID- 3836096 TI - The cells of benign and malignant hemangiopericytomas in aspiration biopsy. AB - Samples obtained by fine-needle biopsy of two benign and one malignant hemangiopericytoma revealed tumor cells with round, oval, or spindle-shaped nuclei, with variable and ill-defined filmy cytoplasm. The nuclei had a finely granular chromatin pattern with or without inconspicuous nucleoli. They were seen singly or in loose or dense cellular clusters. Focal gland-like arrangement of tumor cells was noted in some cellular clusters. Benign endothelial cells were seen among tumor cells and were not cohesive to the latter. The benign and malignant nature of hemangiopericytoma cannot be predicted by examination of the cells present in the aspirates. Also, a specific diagnosis of hemangiopericytoma could not be made on cytologic basis alone as cells of hemangiopericytoma were difficult to differentiate from those of other spindle-cell mesenchymal tumors. PMID- 3836099 TI - A new index of autonomic neuropathy in diabetes mellitus: heat stimulated thermographic patterns. AB - Autonomic neuropathy, especially sympathicopathy, a life-threatening complication of diabetes mellitus, has been difficult to evaluate, and remains undetermined. We studied the thermographic patterns of 62 patients (50-69 years old), revealing the vasodilated activities of one leg by immersing the other leg in a warm water bath, for the detection of sympathetic neuropathy, using Thermoviewer MDJTG-MD. The normal pattern shows an increase in skin temperature, while the flat pattern shows no rise or even a paradoxical decrease. The latter had a significantly longer duration of diabetes and poor blood sugar control. The thermographic pattern is closely related to microangiopathy, R-R interval variation and motor nerve conduction velocity. However, R-R interval variation is often abnormal in patients with normal thermographic patterns, showing vasosympathetic abnormalities appearing far later in the development of diabetic neuropathy. The flat pattern develops slowly after at least several years of poor blood sugar control. Change in the pattern is also gradual and slow. The reproducibility of the pattern is excellent and requires relatively simple and noninvasive techniques. Thermography is one of the most reliable, reproducible and noninvasive indexes for finding and following diabetic sympathetic abnormalities. PMID- 3836098 TI - A high prevalence of obesity in a diabetic population: results of a survey of food patterns in 252 patients in a 2 year period. AB - Dietary patterns were reviewed and correlated with the patients' clinical details in 252 patients seen at the initial visit to a diabetic clinic of a major metropolitan teaching hospital. Except in the subgroup of male patients with insulin-dependent diabetes, there was an extremely high prevalence of obesity, especially in females (70% greater 120% of standard weight; 28% greater than 150%). Traditional 'low-carbohydrate' diets were commonly found irrespective of ethnic origin, particularly in those individuals who had received previous dietary education. This study highlights the urgent need for public health education programmes in order to try to prevent the development of obesity since therapy remains unsatisfactory once it is established. PMID- 3836100 TI - Nerve conduction in diabetic pregnancy. A prospective study. AB - Repeated neurographic examinations were performed during and after the pregnancies of 32 diabetic women who had no signs of neuropathy before pregnancy or at the initial examination during the first trimester. The motor conduction velocity, the sensory conduction velocity and the peak amplitude of the compound action potential of the investigated peripheral nerves were not affected by pregnancy. It is concluded that pregnancy does not impair nerve conduction or induce neuropathy in most diabetic women. PMID- 3836101 TI - Characteristics of pulmonary function in patients with diabetes mellitus. AB - The incidence of pulmonary diseases among diabetics in Japan has been found to be more than 50% at death. This suggests the existence of some pulmonary risk factors. We analyzed pulmonary functions in 50 diabetics (31 males and 19 females) without overt lung disease, compared to 21 healthy male subjects of the same age (around 50 years old). Forced vital capacity and timed vital capacity were lower in diabetics (P less than 0.005). Diffusing capacity was also decreased in male diabetics (P less than 0.05). Among diabetics, a decrease in the diffusing capacity was dominant in patients with diabetic retinopathy, which correlated with an increasing duration of their diabetes. Analysis by the partial correlation method which accounts for the smoking index showed that standardized indices for peripheral airflow in male diabetics decreased significantly as the patient's age increased (P less than 0.005); the rate of decrement was greater than that of the control subjects. Diabetic patients showed abnormal lung function in the peripheral airways which increased with age and gas transfer was also affected by diabetic microangiopathy as well as the duration of diabetes. These changes seemed to deteriorate progressively, possibly combining and contributing to respiratory insufficiency in critical pathological conditions. PMID- 3836102 TI - Relationship between the R-R interval variation and metabolic states of diabetes. AB - To investigate whether the metabolic state of diabetes affects the R-R interval variation, 82 diabetics were studied at intervals of about 1 month and of about 1 year. There was no significant relationship between the rate of change for FBG and that for R-R interval variation at both these intervals. However, in the cases that showed a change of HbA1 by more than 10% in a month, the rate of change for the R-R interval variation was 20 +/- 30% in the group with improved HbA1 and -9 +/- 17% in the group with aggravated HbA1, demonstrating a significant difference (P less than 0.05) between the 2 groups. There was a significant difference (P less than 0.02) in the rate of change for the R-R interval variation between the group with improved HbA1 by more than 5% and the group with aggravated HbA1 by more than 5%, when measured at intervals of 1 year. No special relationship was observed between the difference in R-R interval variation and each of the following: (1) the mean FBG for 1 year preceding the day of initial measurement of the R-R interval variation; (2) the mean FBG for the succeeding year; and (3) the difference in these 2. It was suggested that the R-R interval variation was likely to be affected by the metabolic state during the preceding 1-2 months. PMID- 3836103 TI - Thickening of the capillary basement membrane of the quadriceps muscle in Vacor induced diabetic patients. AB - The effect of Vacor diabetes mellitus on the quadriceps muscle capillary basement membrane thickness has been examined by the electron microscopic method. With this procedure, it was possible to obtain an objective evaluation of the significance of capillary basement membrane thickening in Vacor diabetes mellitus. The results of such a study on the muscle capillary basement membrane in 10 normal subjects and 9 Vacor-poisoned patients have demonstrated the following: (1) the average basement membrane width of Vacor patients (2801 A +/- SD 614) is over twice that of normal subjects (1300 +/- 185 A), and all 9 cases demonstrated muscle capillary basement membrane thickening; (2) there is a significant association of basement membrane width with age (P less than 0.01), but not with the duration of the disease or fasting blood glucose values in the Vacor group. The results of the present study indicate that diabetes mellitus induced by Vacor poisoning can lead to microangiopathy, and that such basement membrane thickening is an early and consistent finding. PMID- 3836104 TI - Diabetes in Wallis Polynesians: a comparison of residents of Wallis Island and first generation migrants to Noumea, New Caledonia. AB - A comparative study of diabetes, impaired glucose tolerance and obesity was undertaken in samples of rural Wallisians of Wallis Island and first generation Wallisian migrants in the urban centre of Noumea, New Caledonia. Approximately 20 25% of the adult population of the 2 communities was included in the study. Wallisians in Noumea tended to be more obese than those in Wallis (particularly females). The prevalence of diabetes was 7 and 4 times higher in Noumea compared to Wallis for males and females respectively. Differences in the extent of obesity appeared to account for some of the difference in prevalence of diabetes, but other environmental factors (such as constituents of the diet, and exercise) must be operative as well. The results of this study are consistent with previous findings concerning environmental determinants of diabetes in Pacific populations. PMID- 3836105 TI - Non-insulin-dependent diabetes in Nauruans: a comparison of newly and previously diagnosed cases. AB - A comparison of 148 newly diagnosed ('incident') and 202 previously diagnosed ('prevalent') Nauruan diabetics, examined during a population survey in 1982, has permitted cautious inference regarding the natural history of non-insulin dependent diabetes (NIDDM) in this Micronesian population. As might be expected the results of the comparison do suggest that Nauruan diabetics undergo further deterioration in glucose tolerance, subsequent to diagnosis of the disease. Plasma glucose concentration is higher in prevalent than incident cases (males: fasting--12.2 versus 10.4 mmol/l; 2 h--18.9 versus 16.3 mmol/l; and females: fasting--13.1 versus 9.3 mmol/l; 2 h--20.3 versus 15.8 mmol/l) suggesting that present treatment measures may not be effective in this population. There was also some evidence that the metabolic consequences of NIDDM may be greater in female than in male Nauruans. Apart from plasma glucose concentration, of 8 other biological variables examined by univariate and multiple logistic regression analysis, three showed consistent differences between incident and prevalent cases in females, but none were consistently different in males. A relatively small difference in estimates of obesity was observed between incident and prevalent cases, and this was particularly notable in males. A number of potential sources of bias in this study are highlighted, and definitive, longitudinal studies will be required to corroborate these findings. PMID- 3836106 TI - Discrimination between cardiac para- and sympathetic damage in diabetics. AB - To analyze the autonomic mechanism on heart rate (HR) variations, pharmacological studies were performed on 8 healthy subjects and 6 diabetic patients. Three HR variations--in supine resting position, during deep breathing in supine position (respiratory HR variations), and on standing (orthostatic tachycardia; delta HR)- were examined. The results in healthy subjects and diabetics were similar. After administration of parasympathetic blockade with atropine, respiratory HR variations were almost abolished. However, no significant difference in delta HR was found. With the addition of beta-adrenergic blockade with propranolol, delta HR was remarkably reduced. Propranolol alone did not affect the respiratory HR variations, but after propranolol administration delta HR was significantly reduced compared with that of the control. The present studies show that respiratory HR variations are predominantly mediated by parasympathicus, whereas orthostatic tachycardia is mediated by both sympathicus and parasympathicus, particularly by sumpathicus. This result suggests the possibility of discriminating the impairment of the 2 cardiac autonomic nervous systems by these simple and non-invasive tests. PMID- 3836107 TI - Relationship between hypoglycemic symptoms and blood glucose levels due to self monitoring in summer camp for diabetic children in Japan. AB - In a summer camp for 47 diabetic children in Kinki district, Japan, in 1984, the relationship between hypoglycemic symptoms and blood glucose levels by self monitoring was analyzed. During the 7-day camp, self-monitoring of blood glucose (SMBG) was carried out 599 times in total, 12.7 times per camper. SMBG due to hypoglycemic complaints amounted to 371. 154 measurements out of 371 indicated blood glucose levels under 80 mg/dl, but 78 monitorings were found to be over 200 mg/dl. Fatigue or weakness were the most frequent hypoglycemic symptoms, as was hunger sensation, each reaching approximately 40% in frequency. In most complaints of tremor, the blood glucose level was critically low. Prompt measurement of blood glucose is indeed necessary to properly treat diabetic children with 'hypoglycemic' symptoms. PMID- 3836108 TI - Mortality and health service utilization amongst Melanesian and Indian diabetics in Fiji. AB - A population-based survey of the biracial population of Fiji conducted in 1980 showed non-insulin dependent diabetes (NIDDM) prevalence to be high amongst urban Melanesians and Asian Indians. Follow-up of the cohort of urban residents has been conducted at the major sites of health service delivery in Suva, and surveillance now encompasses 4 years of such attendances. Age-adjusted mortality rates for diabetic subjects were increased compared with normal subjects (relative risks for 4 year mortality being 4.6 for Indians, P less than 0.01, and 1.5 for Melanesians, P greater than 0.1). Inpatient admission rates were also increased amongst diabetic subjects, but only significantly for the females. The relative risk of admission was 3.1 for Melanesian and 2.6 for Indian females (both significant at P less than 0.05). These results suggest that NIDDM in these populations is associated with several adverse health outcomes, and confirms for developing country populations the association of NIDDM with excess mortality noted amongst developed country populations. PMID- 3836109 TI - Cardiorespiratory arrest in a patient with advanced diabetic autonomic neuropathy. AB - A 53-year-old diabetic woman who had been diabetic for 14 years had recurrent episodes of cardiorespiratory arrest, which were easily resuscitated by a few chest massages. In 2 of 4 episodes a radial pulse was detected, so respiratory arrest was thought to be a primary event. Pentazocine was injected several hours prior to each of the 3 episodes. This was considered to be a precipitating factor. From the first episode of cardiorespiratory arrest, she received oxygen inhalation. When oxygen inhalation was withdrawn for 5-10 min, she became cyanotic. This was considered to be a sign of lack of hypoxic drive mediated by peripheral chemoreceptors. Ventilatory responses to hypercapnia was markedly decreased, indicating impaired central chemosensitivity. The possibility that impaired chemosensitivity could be a cause of respiratory arrest was suggested. PMID- 3836110 TI - Central-peripheral distal axonopathy in the spontaneously diabetic BB-rat: ultrastructural and morphometric findings. AB - Central sensory nerve fibers were examined at distal (C3) and proximal (D12) levels of the gracile tract in the spontaneously diabetic BB-rat. Ultrastructural findings included early occurring malorientation of axoplasmic neurofilaments, axonal sequestration by honeycombing, and ensuing progressive axonal atrophy followed by Wallerian degeneration. Quantification of qualitative findings revealed a proximal to distal gradient in severity. Morphometric analysis confirmed a progressive myelinated fiber atrophy, which was more severe at the distal level. These findings are similar to those earlier described in peripheral sensory nerves of this model. Taken in concert with these previous findings, we conclude that the distal mainly sensory polyneuropathy in the diabetic BB-rat can be classified as a central-peripheral distal axonopathy. PMID- 3836111 TI - Relationship between the severity of diabetes mellitus and pancreatic exocrine dysfunction. PMID- 3836112 TI - Experimental endocarditis and fosfomycin. AB - The effectiveness of fosfomycin in combination with other antibiotics was studied in vitro and in the treatment of left-sided endocarditis in rabbits caused by S. sanguis, S. faecalis, S. aureus or P. aeruginosa. In vitro combinations of fosfomycin plus penicillin, fosfomycin plus cloxacillin, and fosfomycin plus amikacin were synergistic against the strains tested. In vivo synergism was also demonstrated since fosfomycin combinations produced a greater reduction in the number of CFU/g of vegetations than the administration of one antibiotic alone. PMID- 3836113 TI - Minaprine, a new drug with antidepressant properties. AB - Minaprine is a new psychotropic drug which has recently proved to be effective in the treatment of various depressive states. In rodents, minaprine exhibits an atypical spectrum of antidepressant and dopaminomimetic activities. Thus in mice minaprine antagonizes the effects of reserpine, decreases immobility time in the behavioural despair test and potentiates the effects of 5-HTP; in rats it antagonizes muricidal behaviour (blocked by PCPA or raphectomy). However, minaprine does not affect yohimbine lethality and does not induce anticholinergic effects in mice. Minaprine also activates central dopaminergic transmission. Thus at low doses the drug antagonizes neuroleptic-induced catalepsy and induces stereotypies in rats. These stereotypies are blocked by neuroleptics. In addition, minaprine (like apomorphine) induces contralateral turning in mice with a unilateral lesion of the striatum, whereas d-amphetamine induces ipsilateral rotations. Unlike classical dopaminomimetic drugs, minaprine does not stimulate locomotor activity in rats. The mechanisms by which minaprine exerts its effects are still unclear, since in vitro minaprine does not affect monoamine uptake or release and does not interact with monoamine receptors. In vivo, minaprine (acute doses) increases 5-HT, decreases 5-HIAA levels in various brain areas and weakly and reversibly inhibits type A MAO; subacute treatments lead to a decrease in the number of 5-HT1 and 5-HT2 receptors. In addition, in the striatum the drug decreases HVA and DOPAC, and increases 3-MT levels, without affecting DA levels. Minaprine also weakly displaces (3H)-spiperone from striatal D2 receptors and increases striatal ACh levels. Finally, minaprine fails to affect brain NA or MHPG levels in acute doses and does not modify beta receptor density in subacute treatment. Thus minaprine appears to be a chemically and pharmacologically original antidepressant drug which activates both 5-HT- and DA-mediated transmission but which is devoid of NAergic and anticholinergic effects. This latter statement is confirmed by the good cardiovascular tolerance of minaprine in dog, monkey and humans, and by the lack of "tricyclic-like" anticholinergic side-effects in man. PMID- 3836114 TI - Flunarizine, cerebral blood flow and reversion of experimental atherosclerosis in rabbit. AB - Flunarizine is a calcium entry blocker active in the treatment of peripheral vascular disease. The present study was performed to evaluate the effect of flunarizine on cerebral blood flow (CBF) and lipidic patterns in rabbits with dietary experimental atherosclerosis. Since it is well known that there is only a slight correlation between the severity of atheromatous lesions ascertained at necroscopy and the severity of clinical symptoms of cerebral vascular disease, the effect of the drug was assessed by measuring the CBF and compartmental distribution of blood flow in unanaesthetized rabbits by the intracarotid Xe-133 clearance method; blood pressure, plasma lipids and tissue fat infiltration were also checked. An atherogenic diet brings about significant impairment of CBF. Flunarizine is inactive in normal rabbits if chronically administered at the daily dose of 10 mg/kg p.o. In atherosclerotic rabbits chronic treatment with flunarizine induced a pronounced increase in cerebral haemodynamic parameters. Arterial pressure and blood pCO2 were not significantly modified. Lipidic patterns were not markedly improved by flunarizine treatment in comparison with values for atherosclerotic animals. These data demonstrate that flunarizine treatment counteracts the haemodynamic effects of cerebral atherosclerosis. The pronounced activity on the cerebral vessels is accompanied by a weak antilipaemic effect. PMID- 3836115 TI - Established latent herpes simplex virus infections of mice not affected by adenosine monophosphate treatment. AB - Hairless mice with established latent herpes simplex virus infections in their trigeminal ganglia were treated for different time intervals with various doses of adenosine monophosphate. The treatment did not eliminate the latent infection and the results suggest that the drug did not reduce the amount of reactivatable virus present in latently infected ganglia. It appears therefore that adenosine monophosphate exerts its antiviral effects through non-specific mechanisms. PMID- 3836116 TI - Biological properties of benzodifuran derivatives. AB - The antiviral activity and the effect on DNA synthesis of two benzodifuran compounds were studied. DNA and some RNA viruses were significantly inhibited by concentrations ranging from 15 to 30 nM/ml. The inhibition of DNA synthesis in host cells was obtained with concentrations higher than those inhibiting virus replication. A favourable ratio between antiviral activity and inhibition of DNA synthesis of the host cells is present in these compounds. This activity is substantially due to the ability of the compounds to complex with DNA. PMID- 3836117 TI - First experience in the treatment of human hydatid disease with mebendazole. AB - The authors report their experience with mebendazole in human hydatid disease. Following a WHO-controlled protocol, 25 patients with hydatidosis were treated with mebendazole, 50 mg/kg/die for 4-8 months. A further 2 patients were treated with mebendazole 30 mg/kg/die for 6 months, outside the WHO protocol. The evaluation of the results was performed by clinical, radiological (X-ray, ultrasounds, computerized tomography) and immunological investigations (monitoring of indirect haemoagglutinating antibodies, specific IgE, lymphocytic blastization, circulating immune complexes, etc.). The results were encouraging and the side-effects were not important; nevertheless, many questions remain to be elucidated. PMID- 3836118 TI - Clinical assessment of sulbenicillin in acute respiratory tract infection. AB - The effectiveness of sulbenicillin was assessed in the treatment of 15 adults, 12 suffering from bronchopneumonia and three from lobar pneumonia. Six patients had concomitant complications. At a parenteral dose of 2 g twice or thrice daily for at least seven days, all patients became afebrile by the sixth day, and chest X rays became normal in nine patients and improved in five. It is concluded that sulbenicillin, which was well tolerated, is clinically effective in the treatment of severe respiratory tract infections, also in patients with major impairment of their immune response systems. PMID- 3836119 TI - Results of treatment with sodium sulbenicillin in thirty elderly patients with acute bronchopulmonary infection. AB - Thirty elderly patients with acute bronchopulmonary infections were treated with intravenous sodium sulbenicillin for up to 20 days at a dose of 4-6 g/day. Clinical results were excellent in 19 cases and good in 10 cases. In one case treatment had to be discontinued due to a dermal side-effect. It is concluded that sulbenicillin is a useful therapy for acute bronchopulmonary infections in the elderly. PMID- 3836120 TI - Topical use of PVP-I (Betadine) preparations in patients with spinal cord injury. AB - Povidone-iodine (PVP-I) has a wide range of activity against bacteria. The author's clinical experience has indicated that it can be used successfully as a topical agent in the treatment of decubital ulcer in patients with spinal cord injury. To date, 110 patients have been treated with Betadine solution and ointment, topically applied at daily intervals. Of these, 70 patients had decubitus ulcers involving the sacral and trochanter region; 20 were chronic ulcers which cleared up well. Another 20 required rotation grafting procedure. Primary healing was achieved in all patients (1-4). PMID- 3836121 TI - The effect of control on the pattern of utilization of cefotaxime, moxalactam and cefoperazone in a teaching hospital. AB - In a 710-bed teaching hospital, the infectious disease section and pharmacy service initiated a joint programme to control and monitor the use of third generation cephalosporins (TGC): cefotaxime, moxalactam and cefoperazone. The policy requires that an infectious disease physician approve the use of a TGC prior to its administration. This retrospective study sought to assess the pattern of utilization of these agents. From January to December 1983, 109 patient courses of cefotaxime (CT), moxalactam (MX), and cefoperazone (CP) were tabulated. Records from 92 patient courses were available for review (84.4%). The preliminary data show that 46.7% of TGC were used empirically to treat suspected infections without culture and sensitivity data, while 50.0% were used to treat various infections (central nervous system, pulmonary, wound, abdominal, biliary, urinary and blood) after culture and sensitivities were known. Only 3.3% of the TGC were used for surgical prophylaxis. In the empirical treatment group, the leading indications for use of TGC were central nervous system (CT = 40.0%, MX = 48.0%) and biliary (CP = 23.1%) infections. In the treatment group with culture and sensitivity data, the primary uses of TGC were for the treatment of Gram negative pulmonary (MX = 28.0%, CP = 19.2%) and wound (CP = 15.4%) infections. This study shows that physician and pharmacy control does not eliminate empirical treatment with TGC; but it does narrow their use to situations in which their properties are best exploited. PMID- 3836122 TI - Norfloxacin in prostatitis: correlation between HPLC tissue concentrations and clinical results. AB - Prostatic infections are difficult both to diagnose and to treat and have negative influences on the fertility of the patient. Norfloxacin, a new quinolone antibacterial agent particularly active in urinary tract infections, gave excellent results (400 mg every 12 h for 10 days) in the treatment of chronic relapsing prostatitis in a group of 20 patients. An 85% success rate was recorded at the end of a follow-up period of 30 days without any undesired effects. This clinical study was paralleled by a pharmacokinetic evaluation of the serum, urine and prostatic tissue concentrations attained by the drug, measured by an HPLC assay on biological fluids and tissue extracts from surgical specimens of 15 patients suffering from benign prostatic hypertrophy and given two 400 mg doses of norfloxacin in the 12 h preceding prostatectomy. The average tissue concentrations (1 microgram/gm), as compared with the MIC90 of the drug for the pathogens sustaining prostatic infections, appear quite sufficient to control the bacterial foci responsible for the chronic-relapsing course of prostatitis and easily account for the clinical success rate. PMID- 3836123 TI - An assay for screening drugs against animal-infective bloodstream forms of Trypanosoma brucei brucei in vitro. AB - A rapid and simple assay for in vitro drug screening has been established using the mammalian feeder layer cell system for continuous cultivation of infective bloodstream forms of Trypanosoma brucei brucei. A total of 21 trypanocides have been tested. Differences in sensitivity to standard trypanocides were detected among drug-susceptible isolates and strains of T. b. brucei. This assay may thus be of potential use for rapid detection of new drug-resistant isolates of T. b. brucei. PMID- 3836124 TI - Comparative in vitro activity of aztreonam and other antimicrobial agents against Salmonella species. AB - The in vitro activity of aztreonam, the first monobactam antibiotic, was compared with that of 17 other antimicrobial agents against 79 strains of Salmonella species. The microorganisms were isolated from hospitalized patients, surface waters and seafoods during the decade 1975-1984. They included the following species: Salmonella typhi 63, Salmonella typhimurium 5, Salmonella wien 5, Salmonella heidelberg 2, Salmonella arizonae 2, Salmonella paratyphi B 1 and Salmonella enteritidis 1. The minimum inhibitory concentration (MIC) values of the antibiotics were determined using a serial dilution method in agar. A final inoculum size of 10(5) colony-forming units (CFU) X ml-1 of the tested microorganisms was used. Aztreonam exhibited a superior antimicrobial activity to that of the other antibiotics tested. Aztreonam inhibited 90% of the strains by 0.8 micrograms X ml-1 (MIC range was 0.05 to 1.56 micrograms X ml-1). There was no major difference between minimum bactericidal concentration and MIC values of aztreonam and the effect of inoculum size upon MIC values was observed at 10(7) CFU X ml-1. PMID- 3836125 TI - Norfloxacin: a three-day course for the treatment of urinary tract infection. AB - A total of 102 patients with urinary tract infection were treated with 400 mg norfloxacin twice daily for three days. Midstream specimens of urine were cultured at the initial visit and also one and five weeks after treatment. Forty eight out of 50 patients (96%) with significant bacteriuria were successfully treated and remained free from recurrences during the follow-up period. There was no evidence of serious toxicity and only minor adverse symptoms were recorded. PMID- 3836126 TI - Cardiotoxic effects of adriamycin and mitochondrial oxidation in rat cardiac tissue. AB - Rats were subjected to chronic treatment with adriamycin (ADR). Significant alterations of ECG tracings were induced, starting from the third week of treatment. These alterations were related to mitochondrial damage of the heart tissue. A decrease of respiration rate in phosphorylating conditions was observed in isolated organelles over a period of three weeks. Meanwhile, adriamycinol (ADRol) concentration in heart extracts increased during chronic treatment. PMID- 3836129 TI - Experimental comparative renal toxicity of lithium and rubidium. AB - Rat kidney was perfused using Krebs solution containing 3 or 6 mEq/l lithium or 3 or 6 mEq/l rubidium; the histological lesions thus induced were compared. Rubidium-induced lesions, irrespective of concentrations, consisted of tubular dilations, degeneration and necrosis very similar to those induced by lower concentrations of lithium; moreover, Bowman space alterations were observed. In contrast, lithium-induced damage was dose-dependent: 6 mEq/l solution induced severe tubular damage with necrosis, endoluminal cellular debris and hyaline substance. PMID- 3836127 TI - Preliminary evaluation of myocardial toxicity of 4'-deoxydoxorubicin: experimental and clinical results. AB - 4'-deoxydoxorubicin (4'-deoxy-DXR), a new doxorubicin (DXR) analogue with interesting antineoplastic activity, was tested for its cardiotoxicity in guinea pigs and humans. In experiments on isolated guinea pig heart, which is considered a highly predictive model of acute anthracycline cardiotoxicity in humans, 4' deoxy-DXR was found to be significantly less cardiotoxic than DXR. This effect was correlated with a lower degree of inhibition of the fast-exchanging calcium compartment and of the low affinity sarcolemmal calcium-binding sites. The preliminary study on 4'-deoxy-DXR in humans was conducted on 117 patients affected by advanced malignancies resistant to conventional chemotherapy. The drug was administered by bolus i.v. injection in doses ranging from 10 to 40 mg/m2 in the phase I study and in doses of 35 mg/m2 in the phase II study, which is still ongoing. Cardiologic evaluation consisted of recording of EKG, left ventricular systolic time intervals (STI), echocardiography and radionuclide ejection fraction. Preliminary data indicated a lower percentage of EKG abnormalities in comparison not only with DXR but also with other anthracycline analogues. Analysis of STI recorded 1 h after different doses of 4'-deoxy-DXR failed to show the dose-dependent effect on left ventricular function which has been described for DXR, thus confirming the lower acute cardiotoxic effect. Functional parameters serially measured to evaluate chronic cardiotoxicity in 15 patients who received more than 200 mg/m2 were not significantly different from basal values. PMID- 3836128 TI - Sensitivity testing of bacteria to ceftriaxone using discs with different amounts of antibiotic. AB - Studies were performed to compare the results of sensitivity testing of bacteria to ceftriaxone using discs containing 10, 20, 30 and 40 micrograms of the antibiotic. The highest correlation between diameters of zone inhibition and MIC values was found with discs containing 30 micrograms of ceftriaxone. The lowest percentage of false results was also obtained with 30 micrograms discs. PMID- 3836130 TI - Tissue distribution of methotrexate in rats. A comparison between intravenous injection as bolus or drip infusion. AB - Concentrations of methotrexate (MTX, 30 mg/kg) in rat sera and tissues were compared after the drug was administered by i.v. route as bolus injection or by drip infusion. Plasma and tissue specimens were collected after 1 h and 4 h and assayed for MTX by RIA. After 1 h the continuous infusion gave higher MTX levels in plasma, liver, bowel, lung, kidney, testicle and muscle; bolus injection gave higher levels in brain. No differences in levels were found in fat. After 4 h the differences between the two methods of administration were still appreciable only in liver, testicle and muscle. The differences were confirmed by determination of AUC for sera and tissue levels (1-4 h). These data suggest that continuous infusion may be more useful to obtain the highest levels of MTX in tissues with low or medium blood flow (as is probably the case in cancer tissue). Bolus injection, on the other hand, promotes the flow of the drug across the blood brain barrier. PMID- 3836131 TI - Fluorescence in sections of cardiac muscle from rats acutely treated with 4'-0 tetrahydropyranil-adriamycin hydrochloride (THP). AB - An investigation was undertaken of the capacity of thepirubicin (THP), a new anthracycline derivative with reduced cardiotoxicity, to be fixed in the myocardial fibre, as compared with that of adriamycin hydrochloride (ADR), using a method based on the histofluorescence of tissues treated in vivo with anthracyclines. Histological examination of heart sections from rats perfused with either THP or ADR showed similar results. The major difference was the lower quantitative localization of THP in the cytoplasm, although this quantitative difference was not so pronounced in the nuclei. This suggests that cardiac lesions may be due not to the basic action of anthracyclines on DNA but to collateral effects not yet identified. PMID- 3836132 TI - Proglumetacin in arthritis of the hip and the knee. Results of a post-marketing surveillance study. AB - An open, multicentre, outpatient study involving 77 Italian orthopaedic and rheumatology centres was conducted to evaluate the efficacy and tolerability of proglumetacin in the treatment of arthritis of the hip and of the knee. A total of 1522 patients each received 450 mg/day proglumetacin (150 mg tablets X 3) for a period of 4 weeks, with checks at the end of weeks 1, 2, 3 and 4. The evaluation of efficacy was carried out using the following parameters: pain, inactivity, stiffness, limitation of mobility. Pain was reduced by 62% from the beginning to the end of the study. Complete tolerability was demonstrated in 82.9% (1262 patients) of the study group; side-effects, mainly involving the gastrointestinal tract, were seen in only 17.1% of the study group (260 patients). Side-effects were reported in 2.2% of the patients; 5.3% of these were shown to result from proglumetacin treatment. It was concluded that proglumetacin, at the optimum dose of 450 mg/day, answers the need for an effective and well tolerated drug of first choice in the treatment of arthritis. PMID- 3836133 TI - Ultrastructure of staphylococci in respiratory infections treated with nafcillin. AB - A patient with a pleural effusion containing Staphylococcus aureus was treated with nafcillin. Another patient with bilateral upper lobe infiltrates which grew S. aureus from a catheter inserted through a fiberoptic bronchoscope into the lesion was also treated with nafcillin. Electron microscopy of organisms grown while the patients were receiving nafcillin showed staphylococci which were twice as large as normal and contained multiple cross-walls and normal peripheral cell walls. Such abnormal staphylococci result from exposure to subminimum inhibitory concentrations of beta-lactam antibiotics. PMID- 3836134 TI - Combined cefuroxime plus acetylcysteine in the treatment of bacterial infections of the respiratory tract. AB - Fifty adult patients (29 males, 21 females) suffering from respiratory tract infections with substantial production of mucus were treated with cefuroxime 1 g and acetylcysteine 300 mg administered simultaneously by i.m. injection twice daily for 10 days. Bacteriological tests were performed before and after treatment. Clinical variables (fever, cough, quantity and type of sputum, difficulty in expectorating) were evaluated, and assigned scores ranging from 0 to 3 according to an arbitrary semiquantitative scoring system. The therapeutic results obtained were positive. No side-effects were observed. PMID- 3836135 TI - A non-absorbable rifamycin for treatment of hepatic encephalopathy. AB - Ammonia (NH3) plays a role in hepatic encephalopathy (HE). Agents affecting colonic ammonia production, such as non-absorbable antibiotics, decrease plasma levels of NH3 and findings of HE. The short-term efficacy of a non-absorbable rifamycin, rifaximin, was studied in comparison with paramomycin in 20 cirrhotic patients with high levels of NH3 and impaired number connection test (NCT). Both antibiotics significantly decreased ammonia-producing colonic bacteria. Rifaximin proved to be active on both aerobic and anaerobic bacteria and is thus effective, even at the dosage used, in the treatment of HE. PMID- 3836136 TI - In vitro sensitivity of Malassezia spp. to various antimycotics. AB - The sensitivity of Malassezia furfur and Malassezia pachydermatis to various antimicrobial agents both as single compounds and combined with various vehicles was evaluated in vitro using the agar diffusion method. Clotrimazole, thiabendazole, ketoconazole, econazole, miconazole and other agents were chosen taking into account their specific commercial formulations and their utilization in mycotic pathologies sustained by Malassezia genus in man and animals. The antimicrobial agents were compared with nystatin and amphotericin, regarded as references because of their well established activity against this species, and with some aspecific disinfectants. The results showed that the substances were effective in inhibiting the growth of these organisms, but that there was no relationship between in vitro activity and commercial formulations of the antimicrobials. Considerations concerning the relationships between Malassezia species in determining zoonotic pathologies and suggestions for the therapeutic use of drugs are reported. PMID- 3836137 TI - Antilipolytic activity of tiadenol-nicotinate in isolated fat cells: a comparison with its parent drugs. AB - Tiadenol-nicotinate is an ester in which two molecules of nicotinic acid are linked to one molecule of tiadenol. In the present study the antilipolytic activity of tiadenol-nicotinate was evaluated in isolated rat fat cells and a direct comparison was made with the parent drugs. Basal lipolysis was not affected by tiadenol-nicotinate or by nicotinic acid, but it was reduced by a high concentration of tiadenol (10(-3) M) alone or associated with a double concentration of nicotinic acid. Tiadenol-nicotinate (10(-5)-10(-3) M) was very effective in antagonizing the lipolytic action of epinephrine (10(-6) M) and of theophylline (3 X 10(-4) M). The latter drugs were equally sensitive to the inhibitory effect of tiadenol, while nicotinic acid reduced the action of theophylline more than the effect of the catecholamine. Neither of the parent drugs was as effective as tiadenol-nicotinate at this level. However, nicotinic acid potentiated the antilipolytic effect of tiadenol, thus making it possible to reach an inhibitory effect quantitatively similar to or even higher than the effect of tiadenol-nicotinate. These results show that tiadenol-nicotinate is a potent antilipolytic agent in vitro and that its effect may be due to hydrolysis of the ester and release of the parent drugs. The possible therapeutic value of tiadenol-nicotinate is discussed. PMID- 3836138 TI - Brain cell cultures--a tool in neurobiology. PMID- 3836139 TI - Laminin promotes cerebellar granule cells migration in vitro and is synthesized by cultured astrocytes. AB - Newborn rat cerebellum microexplants have been used as a model to study neuronal migration. Laminin in a substrate-bound form modifies extensively the migratory behavior of the neurones, an effect which is blocked if antilaminin antibodies are present during the assay. 35S methionine incorporation followed by SDS-PAGE electrophoresis, fluorography and immunoprecipitation with antilaminin antibodies allowed to demonstrate that laminin is synthesized and secreted by cultured newborn rat cerebellum as well as by cultured newborn rat cerebral cortex astrocytes. PMID- 3836140 TI - Effect of mitogens in various organs and cell culture conditioned media on rat oligodendrocytes. AB - Extracts prepared from embryonic, neonatal and adult rat brain were examined for the presence of oligodendroglial mitogens. Brain-derived mitogenic activities were found in all developmental stages with specific activity increasing during neonatal development. Extracts from postnatal day 7 contained the highest specific activity. Upon fractionation by molecular weight, each developmental stage expressed a peak of mitogenic activity corresponding to 67,000 daltons. This fraction was able to induce proliferation in cultures grown in serum, serumless chemically defined medium or serum-free medium alone. Neonatal and adult brain extracts had an additional peak of activity at 14,000 daltons. This latter activity was expressed only under serum-supplemented culture conditions. Mitogenic activity was also found in conditioned media from the clonal glioma cell line C6 and primary astrocytes and in extracts derived from neonatal rat liver. These data indicate that a limited range of brain-derived mitogens for oligodendrocytes exist during development and adulthood. PMID- 3836141 TI - Nerve cells of adult and aged mice grown in a monolayer culture: age-associated changes in morphological and physiological properties of dorsal root ganglion cells in vitro. AB - In order to differentiate age-associated changes in morphological and physiological properties of mammalian nerve cells, dorsal root ganglion (DRG) cells of aged mice (C57BL/6; 98-99 weeks old) were grown in a monolayer culture. Neurite outgrowth, changes in shape and size of their soma and functional properties of their plasma membranes were compared to those of tissue-cultured DRG cells from young adult mice (4-8 weeks old). Trigeminal root ganglion (TRG) cells of aged mice were also grown in a monolayer culture, and their in vitro growth was compared to that of the aged DRG cells. Nerve cells were dissociated from DRG (or TRG) by digestion with collagenase and by trituration and were grown on collagen-coated plastic dishes for more than 14 days. Growth of neurites and changes in the size and shape of the nerve cell soma were viewed under a phase contrast microscope, and physiological properties of the plasma membrane were studied by conventional intracellular recordings with a glass microelectrode. Both adult and aged DRG cells grew neurites of various length and underwent changes in shape and size of their soma, which could be divided into 2 stages; early and late. In the early stage of tissue culture (0-60 h in vitro), nerve cells altered their shape from a spherical to a spindle-like form. This change was not associated with the reduction in cell size. In the late stage of the tissue culture (3-14 days and thereafter), the DRG reduced their cell size, while changes in shape remained small. Quantitative comparison of the adult and aged DRG nerve cells revealed the following 3 major differences between 2 cultures: the survival fraction of the aged DRG cells counted at 36-48 h in vitro was 1/4 to 1/10 of that of the adult DRG cells in 3 different tissue culture trials; reduction in the cell size occurred much earlier in the aged than in the adult nerve cells; the rate of reduction in size of the aged DRG cells was large in comparison with that of the adult DRG cells. No difference in neurite growth or in physiological properties (resting membrane potential, input resistance, input capacitance or capability of generating both Na and Ca spikes) was detected between the aged and adult nerve cells in tissue culture. PMID- 3836142 TI - Modification of alkaline phosphatases by treatment with glycosidases. AB - The tissue-specific variants of alkaline phosphatase that are characteristic of human liver and bone are believed to possess identical protein cores; nevertheless, they differ in certain properties such as electrophoretic mobility and stability to heat. Their electrophoretic mobilities are modified by digestion with various glycosidases. Furthermore, the difference in heat stability between them is reduced by treatment with a glycosidase preparation from Trichomonas foetalis. These results are consistent with the view that these enzyme variants differ only in their carbohydrate moieties. PMID- 3836143 TI - Effects of substrate fatty acids on products of lecithin hydrolysis and acyl-CoA independent transacylation with cholesterol by aortic enzyme preparations. AB - The acyl composition of substrates and products of enzymatic hydrolysis and transacylation of lecithin with cholesterol in the arterial wall was investigated. Saturated acyl residues predominated in lysolecithin and unsaturated ones in acids released by hydrolysis of egg lecithin. In the reaction system with cholesterol, saturated acyls predominated in both lysolecithin and acids released whereas unsaturated ones were more abundant in newly formed acylcholesterols. Mainly unsaturated acyls were present in the hydrolysis products from soybean lecithin in the reaction systems with and without cholesterol. For acylcholesterols formed in the presence of either lecithin, the percent values are in the numerical order of C18:2 greater than C18:1 greater than C16:0 greater than or equal to C18:0. It It is concluded that acyl preferences and interactions in the enzyme-catalyzed reactions studied may contribute to the different accumulation and removal of the compounds involved from the artery. PMID- 3836144 TI - Comparison of thioltransferase (glutathione:disulfide oxidoreductase) from various rat tissues. AB - Thioltransferase activity was detected in kidney, heart, epididymal fat pads and skeletal muscles, and was inhibited at high concentrations (greater than 1.6 mmol/l) of reduced glutathione. With several disulfide substrates the Vmax and Km for thioltransferase in kidney, heart, soleus and extensor digitorum longus were considerably smaller than in liver. The enzyme from tibialis anterior showed similar kinetic constants as from liver with certain substrates but not with L cystine. PMID- 3836145 TI - The decline in catalytic enzyme activity concentration with aging of the rabbit erythrocyte. AB - Rabbit erythrocytes were separated by centrifugation on a discontinuous Percoll gradient into fractions of progressively increasing cell age to measure the in vivo decline in catalytic activity of eleven enzymes during the erythrocyte life span. Erythrocyte enzymes decline exponentially at different rates. The maximal and minimal catalytic activities (erythrocyte catalytic activity at the beginning and at the end of the erythrocyte life span), the intracellular half-life of enzymes and the daily loss of catalytic activity of total body erythrocytes were estimated. PMID- 3836146 TI - Hand-use preference for reaching and object manipulation in 6- through 13-month old infants. AB - Validity, reliability, and stability of separate assessment of hand-use preferences for reaching, object manipulation, and complementary bimanual action were determined for 6 through 13 month-old male and female infants. Only hand-use preferences for complementary bimanual action varied with age. Females had more distinct hand-use preference than males but only for object manipulation. Comparison of hand-use preference among these different sensorimotor skills can provide a richer evaluation of infant handedness status required for systematic study of the development of neuropsychological functions during infancy. PMID- 3836147 TI - Development of linear measurement in five- and six-year-old children. AB - This study sought to identify the higher level knowledge (e.g., conservation of number) necessary for a child to understand linear measurement and to chart the growth of linear measurement in terms of the development of its components. To assess the presence of these components, a battery of 34 number, length, and distance tasks was developed and administered to 100 children between the ages of 63 and 78 months from kindergarten and Grade 1. Results indicate that there is a substantial delay between acquisition of the necessary components and emergence of a mature grasp of linear measurement. The collection of components for the number and length domains form scaled sets; within each domain, however, the pattern of development is marked by discontinuities. These discontinuities are interpreted as being associated with the need to reorganize number and length concepts. Most elements of the observed sequences of development are predicted by Piagetian theory, although others, such as asynchronies between conservation and transitive inferences of nonequivalence, are more consistent with Gagne's (1968) model of development. PMID- 3836148 TI - Self-assessment of competency in geriatric dentistry. PMID- 3836149 TI - The future of geriatric medicine. PMID- 3836151 TI - The application of social work skills in gerontology education. PMID- 3836150 TI - The use of videotaped role playing in training and evaluating gerontological counseling and outreach skills. PMID- 3836152 TI - Perceived adequacy of geriatric training in a family practice residency program. PMID- 3836153 TI - [Pelvic exenteration in cancer of the cervix uteri. Analysis of 252 cases]. PMID- 3836155 TI - Methods of strategic planning for blood services. AB - Among the operations research methods applied to strategic planning problems mixed integer programming has proven to be a very useful framework for a mathematical formulation of the important strategic relations in blood services. A case study shows how the method works with mathematical details omitted. The input data and the results are illustrated and discussed. PMID- 3836154 TI - [Ectopic pregnancy. An epidemiologic study]. PMID- 3836156 TI - Inhibitory effect of monocyte reactive antibodies on monocyte chemotaxis in systemic lupus erythematosus. AB - Presence of different types of autoantibodies is a basic feature of systemic lupus erythematosus (SLE). Though monocytes, macrophages play an important role in cellular immunity, autoantibodies against monocytes have not been sufficiently studied. The authors used automatic fluorochromatic assay to detect monocyte reactive autoantibodies in the sera of SLE patients. Of SLE 35.5% sera showed complement-mediated monocytotoxic activity against healthy monocytes. Monocyte reactive SLE sera as well as monoclonal antibodies against human monocytes inhibited chemotaxis of control monocytes. The results suggest that monocyte reactive autoantibodies may play a role in the decreased monocyte number and defective monocyte functions observed in SLE. PMID- 3836157 TI - Screening of toxic-haemolytic anaemia in laboratory rats: a model of phenylhydrazine-induced haemolysis. AB - An increase of the plasma haemoglobin level was found to be a reliable characteristic of toxic-haemolytic anaemia induced by a single dose of phenylhydrazine in laboratory rats. Very high doses of the substance increased the changes in many other characteristics to an extent that was up to now observed only for haemolytic events. PMID- 3836158 TI - Genetic polymorphism of the Gypsy population in Hungary as based on studies of red blood cell antigens. AB - Based on the examination of blood groups (ABO, Rh, MNSs, Duffy, Kell-Cellano, P, Kidd, Lewis, LW) the genetic polymorphism of the Gypsy population living in Hungary has been studied. Comparisons were made between Hungarian Gypsy and non Gypsy populations, and significant differences were found in the incidence of most of the tested blood groups. PMID- 3836159 TI - Vesicle release from erythrocytes during storage and failure of rejuvenation to restore cell morphology. AB - During storage, discocyte-echinocyte transformation of erythrocytes occurs progressively and microvesicles release from the spicules in the form of membrane encapsulated red cell fragments. After rejuvenation part of the membrane deficient cells, mainly spheroechinocytes, transform into spherostomatocytes because of their inability of restoring the surface area to volume ratios of normal discocytes. The proportion of spherostomatocytes formed on rejuvenation increases with storage time. Numerical indices for characterizing the "level of reversion" and the "quality of reversion" were developed. Osmotic fragility curves and light scattering histograms also reflected a partially irreversible increase of inhomogeneity of stored cell populations. PMID- 3836160 TI - Cytotoxic activity of peripheral mononuclear cells in normal pregnancy. AB - Killer-cell activity was studied in healthy pregnants in all three trimesters of pregnancy. Results were compared with values obtained three months after delivery, as well as with similar data of non-pregnant women. The effect of pregnant and non-pregnant sera on cytotoxic activity has also been investigated. Killer-cell activity was measured by a capacity test on antibody coated human red blood cells. According to the results, healthy pregnancy did not influence the maternal killer-cell activity. On the other hand, the various sera had a decreasing effect on the killer-cell activity of both pregnant and non-pregnant women. Attention is called to the aspecific inhibitory effect of sera. PMID- 3836161 TI - Granulocyte enriched buffy coat transfusions in neutropenic patients. AB - Twenty four courses of granulocyte enriched buffy coat transfusions were administered to 22 different infected neutropenic patients. Those patients who received an average of greater than or equal to 13 units per transfusion, which represented a mean of 1.02 X 10(10) granulocytes, had a survival rate of only 30% which was not significantly different from the 28.5% found among patients who received an average of less than or equal to 12 units per transfusion, which represented a mean of .63 X 10(10) granulocytes. In addition, no significant difference in survival rate was found between patients who received a course of greater than or equal to four transfusions and those who received a course of less than or equal to three transfusions. Finally, no significant difference in survival rate was found between patients with acute leukemia and those with other disorders or between patients with positive cultures and those whose cultures were negative. Given the poor clinical results associated with buffy coat transfusions, it is concluded that every effort should be made to recruit single leukapheresis donors for the support of infected neutropenic patients, rather than use granulocyte enriched buffy coats as they are presently produced. PMID- 3836162 TI - [The inhibitory material in human seminal plasma]. PMID- 3836164 TI - [Effect of ageing on biological rhythms]. PMID- 3836163 TI - [The course of acute myocardial infarction in elderly patients]. PMID- 3836165 TI - [Percutaneous transrenal extraction of stones from the upper ureter]. PMID- 3836166 TI - [Vesico-ureteral reflux in children]. PMID- 3836167 TI - [The importance of early diagnosis of malignant melanoma in pregnancy]. PMID- 3836168 TI - [Capillary vs venous serum bilirubin measurements]. PMID- 3836169 TI - [Ricin poisoning at a children's party]. PMID- 3836171 TI - [The Israeli health system: goals, problems and limitations]. PMID- 3836170 TI - [The clinical spectrum of wandering spleen]. PMID- 3836172 TI - [A new look at selenium]. PMID- 3836173 TI - [The defence mechanism against bacteria in the urinary tract]. PMID- 3836174 TI - [Upper urinary tract calculi--new methods of treatment]. PMID- 3836175 TI - [Staphylococcus aureus bacteremia: diagnostic and therapeutic implications]. PMID- 3836176 TI - [Computed tomography of the brain in dementia]. PMID- 3836177 TI - [Myxedema myopathy]. PMID- 3836178 TI - [Clinical diagnosis: chronic lung disease in a patient under treatment for Hodgkin's disease]. PMID- 3836179 TI - Morphologic and cytochemical studies of the pig's pinealocytes with special consideration to the cytoplasmic dense bodies. PMID- 3836180 TI - Ultrastructure and topography of dense bodies in pinealocytes of castrated males of domestic pig. PMID- 3836181 TI - Morphology and topography of substantia nigra in Insectivora. PMID- 3836182 TI - Some remarks on the general structure of the solitary tract nucleus in rat. PMID- 3836183 TI - Human anterior fonticulus during the fetal period. PMID- 3836184 TI - Relations between maxillary artery and the otic ganglion. PMID- 3836185 TI - Analytical method of investigations of ribs, sternum and diaphragm on radiograms. PMID- 3836186 TI - Morphology of the tendinous chords in the left ventricle of human heart. PMID- 3836187 TI - Arteries of the kidney in domestic sheep. PMID- 3836188 TI - Composition in N, Ca, P and Mg in the group uterus, placenta and foetus until day 14 of gestation in the rat. Influence of the hydrocortisone acetate. PMID- 3836190 TI - Variations in the origin of the deep femoral arteries in human fetuses. PMID- 3836189 TI - Composition in N, Ca, P and Mg in the uterus, placenta and foetus from day 16 to day 21 of gestation in the rat. Influence of the hydrocortisone acetate. PMID- 3836191 TI - Effect of isoniazid on folic acid status in Swiss mice and rats. AB - Effect of isoniazid (INH) and its metabolites e.g. mono and diacetyl hydrazines (MAH and DAH respectively) was studied on circulating and tissue folates in mice (a species susceptible to INH tumorigenicity) and rats (a species resistant to INH carcinogenicity). It was observed that ip injection of INH, MAH and mydrazine sulfate (HS, 0.18 mg/g) decreased blood folates in mice while only HS and MAH decreased blood folates in rats. DAH had no effect on blood folates of mice or rats. Long term feeding of MAH and HS to mice decreased blood folates in treated mice at the age of 17 and 22 months respectively. PMID- 3836193 TI - Effect of graded distension of urinary bladder on arterial blood pressure and neurohumors in rabbits. AB - Effect of graded distension of urinary bladder has been observed on the circulating level of catecholamine, cortisol and serotonin along with arterial blood pressure in rabbits. Simultaneously adrenal catecholamine has been also investigated. Similar pattern of increase has been observed in the levels of catecholamine, cortisol, serotonin and arterial blood pressure after bladder distension at 20 ml, 40 ml and 60 ml volumes. On this basis, it may be inferred that there is some role of the vasoconstrictor humors released during bladder distension in pressor response. At the same time, decrease in adrenal catecholamine level also supports this. PMID- 3836192 TI - Sensorimotor changes following lesion of mid-dorsal caudate nucleus in rats. AB - Effects of mid-dorsal caudate nucleus on sensorimotor changes were studied in rats. After electrolytic lesion of this area of brain there was impairment in sensory functions and decline in motor component was observed to be statistically significant. PMID- 3836194 TI - Variation of sex chromatin percentage during menstrual cycle and menopause. AB - Buccal smears were obtained from 2 groups of women to study the percentage of Barr bodies. The first group comprised of normal women with regular menstrual cycle between the age group 18-22 years. The second group comprised of Menopausal women in the age group 47-55 years. A definite variation in percentage of barr bodies was observed in the first group whereas the percentage remained normal in the second group. PMID- 3836195 TI - Effects of venous occlusion and local exercise on fibrinolytic activity and clotting time of blood. AB - Fibrinolytic activity (local) and the clotting time of blood after venous occlusion with and without accompaniment of active or passive exercise was studied in 21 medical students. All cases showed local significant increase in fibrinolytic activity, whilst the clotting time showed a significant fall indicating increased coagulability of blood, only when exercise accompanied venous occlusion. PMID- 3836196 TI - Interaction between ethanol and some drugs in rodents. PMID- 3836197 TI - Critical review of re-orientation of medical education. PMID- 3836198 TI - Foodborne diseases in India. PMID- 3836199 TI - Abstracts of papers presented at the scientific sessions and symposium in the XXIX annual conference of the Indian Public Health Association. Nagercoil (Kerala) 8-10 Feb. 1985. PMID- 3836200 TI - Prophylactic iron supplementation in children. PMID- 3836201 TI - Prophylactic iron supplementation for underprivileged school boys. I. Two levels of dosing and efficacy of teacher-distributions. PMID- 3836202 TI - Prophylactic iron supplementation for underprivileged school boys. II. Impact on selected tests of cognitive function. PMID- 3836203 TI - Prophylactic iron supplementation for underprivileged school boys. III. Impact on submaximal work capacity. PMID- 3836204 TI - Morbidity pattern of adolescents in an urban community. PMID- 3836205 TI - Accidental poisoning in children. PMID- 3836207 TI - Neurodegenerative diseases of infancy and childhood. (Part II). PMID- 3836206 TI - Iron therapy. PMID- 3836208 TI - Optic nerve involvement in tuberculous meningitis. PMID- 3836209 TI - Serum zinc and copper in tuberculosis. PMID- 3836210 TI - Exchange transfusion in newborns. PMID- 3836211 TI - Mechanism of phototherapy. PMID- 3836212 TI - Trichinosis in Thailand during 1962-1983. AB - Various studies on trichinosis in Thailand since the first outbreak in 1962 up until 15 July 1983 are reviewed. There were 67 outbreaks, affecting 2,792 persons and resulting in 85 deaths. Most of the outbreaks occurred in the north of the country which is mountainous. Hilltribe pigs and wild boars were the common sources of human infection. Incidence of Trichinella spiralis larvae in dog meat in the area favoring of dog meat consumption is cautioned to create a public health problem in the future. Some Thai dishes are proved as viable T. spiralis larvae source due to cooking procedures. Control measures of trichinosis launched by the Department of Livestock Development are described. PMID- 3836213 TI - Studies on anthrax in food animals and persons occupationally exposed to the zoonoses in Eastern Nigeria. AB - A total of 221 blood and 174 carcase swab samples obtained from food animals (cattle, sheep, goats, pigs and horses) slaughtered at urban and rural slaughter houses in Nsukka area were studied. 51 blood samples and 180 samples of vesicle fluid were also collected from persons occupationally exposed (butchers/skinners, meat retailers, meat inspectors, veterinarians and tanners) to these animals and their products. All the samples were studied culturally and microscopically. Confirmation of infection was by subcutaneous inoculation of guinea pigs and mice with samples of human and animal blood, carcase swabs and vesicle fluid got from suspected cutaneous lesions on the hands of persons studied in this survey. Of the blood samples obtained from food animals, 5 per cent (3/60) of cattle and 3.3 per cent (1/30) of sheep were positive. The rest of the blood samples from other animals were negative. For the carcase swab samples, 5.7 per cent (5/88) from cattle and 3.1 per cent (1/33) from sheep were positive. The rest of the carcase swabs from goats, pigs and horses were negative. Only the blood samples from butchers/skinners, 20 per cent (2/10), meat retailers, 9.1 per cent (1/11) and tanners, 11.1 per cent (1/9) were positive. Malignant pustule was confirmed in 13.3 per cent (6/45) of butchers/skinners, 10 per cent (3/30) of tanners and 6 per cent (3/50) of meat retailers. The results show that food animals and their products constitute a potential danger to those persons whose occupation necessitates handling animal products or contact with animals.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836214 TI - Demodicidosis in livestock in West Bengal (India). AB - Of 2820 livestock, comprising 472 cattle, 294 goats, 128 pigs and 665 dogs of urban and rural areas of West Bengal (India), 89 (3.15%) were found to suffer from demodicidosis. Highest infestation rate (3.87%) was observed in dogs followed by cattle (3.11%), goats (2.44%) and pigs (1.44%). The infestation rate did not differ significantly between urban and rural areas. Head, neck and face were the common sites of lesions followed by extremities and body surfaces. Females were infested more than males. Animals of all age groups suffered from mange infestation, though highest infestation (18.00%) was observed in 36-47 months of age and lowest (10.11%) in 72 months and above age groups. Some bacterial invaders were isolated from the demodectic lesions, which were found sensitive to a number of common antibiotics. Fungi like Trichophyton mentagrophytes could also be isolated from the lesions. PMID- 3836215 TI - Further studies on acquisition of potential infectivity for man in closely related Trypanosoma Trypanozoon brucei clones. AB - Twelve clones were isolated from relapsing populations in an infection initiated with a clone-derived human serum resistant Trypanozoon. Isolates were serotyped by the immunotrypanolysis test and four distinct variable antigen types (VATs) designated WITat 4, 5, 6 and 7 were identified. Contemporaneous blood incubation infectivity testing (BIIT) showed that most clones isolated in the course of infection were resistant to normal human serum while some clones isolated after series of relapses were susceptible. Four clones (G1, G2, G7 and G15) designated WITat 5, WITat 6, WITat 6 and WITat 5 respectively behaved differently in the BIIT. One of each pair was readily sensitive while the two others were highly resistant to human serum. This observation suggests that resistance to human serum might be dissociated from variable antigen type in a serodeme of Trypanosoma rhodesiense. The resistance or susceptibility to normal human serum by Trypanozoon is not immutable but is determined by the environment in which the trypanosomes live. PMID- 3836216 TI - Prevalence of human hydatidosis in Tripoli region of Libya. AB - The literature of human hydatid disease is briefly reviewed. Records from 1972 to 1979 in the Surgical Department of the Central Hospital, Tripoli, showed that 111 cases of hydatid disease were confirmed surgically out of 22,979 admissions, an incidence of 0.48%. Of the 111 cases, 73 (65.76%) were females and 38 (34.24%) were males. The highest incidence occurred in the 20-40 year age group, followed by 41-60 year age group. Recommendations are made concerning disease surveillance and documentation of epidemiological data. PMID- 3836217 TI - Ectoparasitic infestation of dogs in Bendel State, Nigeria. AB - An investigation into ectoparasitic infestation of different breeds of dogs presented to four veterinary clinics in Benin, Sapele and Auchi in Bendel State of Nigeria during the period January 1983 to December 1983 is presented. Of a total of 820 dogs examined for ectoparasites 246 (30.00%) were infected by ticks, 226 (27.56%) by lice, 212 (25.85%) by fleas and 109 (13.29%) by mites. The species of ectoparasites identified and their prevalence rates were Rhipicephalus sanguineus (19.5%), Otobius megnini (10.48%), Ctenocephalides canis (25.85%), Demodex canis (13.29%). Common clinical symptoms evinced in this species include scratching, licking, irritation, restlessness, alopecia, otitis externa and dermatitis. Some aspects of epidemiology of canine ectoparasitic infestation are discussed. PMID- 3836218 TI - Prevalence of ectoparasites of small ruminants in Nsukka, Nigeria. AB - Over a period of one year (January 1983 to December 1983), an investigation was mounted to determine common ectoparasitic infestation of small ruminants in selected farms in Nsukka, Nigeria. The species identified in goats included Ctenocephalides canis, Boophilius decolouratus and Amblyomma variegatum lides while those recovered from parasitized sheep were Ctenocephalides canis and Damalinia ovis. Out of a total of 148 sheep and goats examined for ectoparasites, 68 (45.95%) were infested. A further breakdown of this figure shows that 10 (18.52%) out of a total number of 54 sheep screened were infested, while 58 (61.70%) of the goats (94) examined were infested. Identification of these ectoparasites was by anatomical and morphological characteristics. Result of the investigation indicated that there was variation in the degree of ectoparasitic infestation from one animal to another. Epizootiological factors associated with ectoparasitic infestation of small ruminants were highlighted and the zoonotic importance of Ctenocephalides canis and Amblyomma variagatum was discussed. PMID- 3836219 TI - Psychiatry and primary care practice in Israel and other countries. PMID- 3836220 TI - The detection of psychiatric disorder in primary care settings. Implications for the taxonomy of neurosis. PMID- 3836221 TI - The primary care physician and the psychiatric epidemiologist: a symbiotic service research partnership. PMID- 3836222 TI - The application of behavioral sciences in primary care. PMID- 3836223 TI - The life cycle, mental health and the sense of coherence. PMID- 3836224 TI - Attempted suicide--failed suicide or parasuicide? Diagnostic and therapeutic considerations. PMID- 3836225 TI - Medical students and their views on psychiatric issues. PMID- 3836226 TI - The psychiatrist and the rabbi: toward a model of clinical cooperation. PMID- 3836227 TI - Journalists, anxiety and media as an intra-psychic screen. PMID- 3836228 TI - Allometries of the durations of torpid and euthermic intervals during mammalian hibernation: a test of the theory of metabolic control of the timing of changes in body temperature. AB - The durations of the intervals of torpor and euthermia during mammalian hibernation were found to be dependent on body mass. These relationships support the concept that the timing of body temperature changes is controlled by some metabolic process. Data were obtained from species spanning nearly three orders of magnitude in size, that were able to hibernate for over six months without food at 5 degrees C. The timing of body temperature changes was determined from the records of copper-constantan thermocouples placed directly underneath each animal. Because all species underwent seasonal changes in their patterns of hibernation, animals were compared in mid-winter when the duration of euthermic intervals was short and relatively constant and when the duration of torpid intervals was at its longest. Large hibernators remained euthermic longer than small hibernators (Fig. 2). This was true among and within species. The duration of euthermic intervals increased with mass at the same rate (mass 0.38) that mass specific rates of euthermic metabolism decrease, suggesting that hibernators remain at high body temperatures until a fixed amount of metabolism has been completed. These data are consistent with the theory that each interval of euthermia is necessary to restore some metabolic imbalance that developed during the previous bout of torpor. In addition, small species remained torpid for longer intervals than large species (Fig. 3). The absolute differences between different-sized species were large, but, on a proportional basis, they were comparatively slight.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836229 TI - Temperature dependence of egg laying in Aplysia brasiliana and A. californica. AB - The temperature dependence of egg laying was examined in winter-caught Aplysia. Cold-water Aplysia californica and warm-water A. brasiliana were individually housed in the same large aquarium for 16 days at 15 degrees C, and then for 16 days at 20 degrees C. Initially, the majority of the A. californica were not reproductively mature (as determined by injections of atrial gland extracts) whereas all of the A. brasiliana were reproductively mature. When the temperature was increased from 15 to 20 degrees C, both species showed a marked increase in the frequency of egg laying. At both temperatures, A. brasiliana laid eggs more frequently but produced smaller egg masses than A. californica. We conclude that increased egg laying in A. californica was attributable both to facilitation of oogenesis in previously reproductively immature animals and to increased activity of the bag cells which release an egg-laying hormone. Increased egg laying in A. brasiliana was attributable primarily to increased bag cell activity. PMID- 3836230 TI - An allometric comparison of the mitochondria of mammalian and reptilian tissues: the implications for the evolution of endothermy. AB - The effects of body size and phylogeny on metabolic capacities were examined by comparing the mitochondrial capacities of 6 mammalian and 4 reptilian species representing 100-fold body weight ranges. The mammals examined included 3 eutherian, 2 marsupial and a monotreme species and the reptiles 2 saurian, 1 crocodilian and 1 testudine species. The tissues examined were liver, kidney, brain, heart, lung and skeletal muscle. Allometric equations were derived for tissue weights, mitochondrial volume densities, internal mitochondrial membrane surface area densities, tissue mitochondrial membrane surface areas both per gram and per total tissue and summated tissue mitochondrial membrane surface areas. For the mammals and reptiles studied a 100% increase in body size resulted in average increases of 68% in internal organ size and 107% in skeletal muscle mass. Similarly, total organ mitochondrial membrane surface areas increase in mammals and reptiles by an average 54% and for skeletal muscle by an average 96%. These values are similar to increases in standard (54 and 71%) and maximum (73 and 77%) organismal metabolism values found by other authors for mammals and reptiles respectively. Although the allometric exponents (or rates of change with increasing body size) of the mitochondrial parameters in mammals and reptiles are statistically the same, in general the total amount of mitochondrial membrane surface area in the mammalian tissues are four times greater than found in the reptilian tissues.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836231 TI - Atrial gland cells synthesize a family of peptides that can induce egg laying in Aplysia. AB - Endogenous peptides induce egg laying in the marine mollusc Aplysia in two ways: egg-laying hormone (ELH) from the neuroendocrine bag cells acts directly, causing the release of eggs from the ovotestis; peptides A and B from the atrial gland act indirectly, activating the bag cells to release ELH. Another atrial gland peptide (egg-releasing hormone; ERH) is a structural and functional hybrid of ELH and peptides A and B; it can act both directly and indirectly to induce egg laying. Atrial glands were incubated in a mixture of 3H-amino acids for 18 h, and the biosynthetically labelled peptides isolated using sequential Sephadex G-50 column chromatography and isoelectric focusing. Radiolabelled peaks were localized and bioassayed in intact animals. Bioactive peaks were then characterized functionally using two additional assays: egg laying in bag cell less animals (ELH-like peptides) and in vitro induction of bag cell discharge (A- and B-like peptides). ERH-like molecules are active in both assays. Homogeneity of bioactive IEF peaks was assessed by SDS-PAGE. Sephadex G-50 gel filtration of biosynthetically labelled atrial gland extracts reveals two major peptide peaks. Peak D (apparent Mr 6,000) is strongly radiolabelled and contains most of the egg laying activity, but has a low absorbance at 274 nm. Peak E (apparent Mr 3,500) is weakly labelled and contains a small proportion of the total egg-laying activity, but has a large absorbance at 274 nm. Isoelectric focusing of radiolabelled peptides in peak D reveals seven distinct ELH-like species (pI 5.5, 7.5, 8.5, 8.7, 8.9, 9.1, 9.4), and two peaks (pI 5.9, 8.1) that have both ELH like and A-/B-like activity. The pI 8.1 peak may result from the comigration of peptide A with ERH or with an unidentified ELH-like peptide. It is not yet clear whether the pI 5.9 activity results from comigration of distinct peptides or from the presence of a previously uncharacterized ERH-like molecule. Isoelectric focusing of radiolabelled peptides in peak E reveals five distinct ELH-like species (pI 7.3, 8.5, 8.7, 9.1, 9.4), and one peak (pI 8.9) with both ELH-like and A-/B-like activity. The pI 8.9 peak may result from the comigration of an ELH like peptide with peptide B. Three of the ELH-like peptides (pI 8.5, 8.9, 9.1) found in peak E are probably identical to the ELH-like peptides found at the same pI's in peak D.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3836232 TI - Radioglucose metabolism by Richardson's ground squirrels in the weight-gain and weight-loss phases of the circannual cycle. AB - Captive fed, starved, and refed Richardson's ground squirrels in the weight-gain and weight-loss phases of the circannual cycle were injected with radioglucose and the activity of the label in skeletal muscle proteins and white adipose tissue lipids four hours after injection was used to determine if lean body mass and white adipose tissue would be rapidly restored when starved animals were refed. Starvation for six days reduced carcass mass 27-31% and white adipose tissue mass 23-24% (Table 1). Activity of the label in both tissues of weight gain and weight-loss animals was reduced by starvation. After four days of refeeding activities returned to levels similar to those in fed animals, with the exception of lower activity in skeletal muscle proteins of weight-gain animals. Furthermore, activity in each tissue fraction of starved and refed weight-gain animals was similar to that in weight-loss animals when expressed as per cent of activity in the respective fed state (Table 2). Radioglucose incorporation indicated that when skeletal muscle and adipose tissue are depleted by starvation, distribution of the label upon refeeding is similar to that in the fed state. Four days after refeeding weight-gain phase ground squirrels had restored 5.5 g of lean body mass and 7.5 g of adipose tissue, including 1.4 g (6 kcal) of protein and 7.0 g (66 kcal) of lipid, respectively. These results are also consistent with the fed state, in which weight-gain animals were depositing more lipid than lean body mass. PMID- 3836233 TI - Warm brain and eye temperatures in sharks. AB - Temperatures in the brain and eyes of mako and porbeagle sharks (Lamnidae) are 5 degrees C warmer than the water while the brain and eye temperatures in six other species of pelagic sharks are within 0.1 degrees C of water temperature. An orbital rete mirabile is present in the porbeagle and mako sharks but absent in the cranial vasculature of eleven other species of pelagic sharks. The orbital rete in the head of the porbeagle and mako sharks acts as a heat exchanger which conserves metabolic heat and raises the local tissue temperatures. This brain and eye warming system should buffer the central nervous system from the effects of rapid temperature change. Warming of the retina may improve the visual sensitivity of these active predators. PMID- 3836234 TI - Sources of heat during nonshivering thermogenesis in Djungarian hamsters: a dominant role of brown adipose tissue during cold adaptation. AB - To assess the thermogenic importance of BAT in Djungarian hamsters we removed about 40% of their BAT and compared their thermogenic abilities before and after the operation. BAT was weighed and assayed for its respiratory properties (Cox, mitochondria). Following removal of BAT we observed considerable reductions of NST. The comparison of NST with BAT weight and with respiratory properties of BAT following partial removal of BAT revealed that at least three different pathways for heat production were involved in NST. In cold-adapted hamsters (values for warm-adapted hamsters in parentheses) we estimated that 66.2% (37.0%) of all NST was produced by mitochondrial respiration in BAT; 16.3% (38.4%) was produced in other organ sites but required the presence of BAT, i.e. there was a mediatory action of BAT on thermogenesis in other organ sites. A further 11.5% (23%) of NST occurred outside of and independent of BAT. Mitochondrial respiration in BAT was the only compartment of NST which increased its contribution during cold adaptation (238 mW to 1,062 mW), whereas the other sources of heat remained largely unchanged. PMID- 3836235 TI - Intracellular pH in hibernation and respiratory acidosis in the European hamster. AB - Intracellular pH was determined (DMO method) in European hamsters, in the spontaneously-occurring respiratory acidosis of hibernation, in hypercapnia due to breathing 12% CO2 in air in euthermy in spring, and in euthermicnormocapnic controls. From euthermy to hibernation, the temperature coefficient of pH was lowest in blood plasma and brain, intermediate in striated muscles (thigh muscles and diaphragm), and highest in heart and liver (Fig. 1). Correspondingly, the estimated dissociation ratio of the protein imidazole buffer groups, alpha Im, decreased markedly in plasma and brain, denoting an acid titration, but varied little in liver and heart. Striated muscles were intermediate (Fig. 2). Like in other mammals, intracellular responses to short-term euthermic respiratory acidosis were characterized by a partial metabolic compensation in the brain and a small metabolic acidification in striated muscles. In hibernation, a powerful metabolic compensation took place in liver and heart, nearly restoring alpha Im, but none occurred in brain (Figs. 3 to 5). The existence of an intracellular acidosis in brain and striated muscles during hibernation is in keeping with an inhibitory role of acidosis, whereas the homeostasis of intracellular alpha Im in liver and heart would subserve the eurythermal functioning of metabolic regulations in these organs, like in most organs of ectotherms. PMID- 3836236 TI - Glycogen synthesis from lactate in skeletal muscle of the lizard Dipsosaurus dorsalis. AB - The capacity of skeletal muscle to synthesize glycogen from lactate was tested in the iliofibularis muscle of the desert iguana, Dipsosaurus dorsalis. Like other reptiles, Dipsosaurus accumulates significant lactic acid concentrations following vigorous exercise. After 5 min of progressively faster treadmill running at 35 degrees C (final speed = 2.2 km/h), blood lactate concentration increased over 14 mM, which decreased 11 mM after 2 h of recovery. Blood glucose concentration remained unchanged throughout at 8.6 +/- 0.46 mM. The role that muscle gluconeogenesis might play in the removal of post-exercise lactate was evaluated. Animals were run to exhaustion at 1.5 km/h on a treadmill thermostatted at 35 degrees C. Animals (n = 43) ran 6.9 +/- 0.75 min prior to exhaustion. Animals were sacrificed and iliofibularis muscles of both hindlimbs removed and stimulated at 2 Hz for 5 min, reducing twitch tension to 6% of prestimulus tension. Fatigued muscles were then split into red and white fiber bundles and incubated 2 h or 5 h at 35 degrees C in Ringer solution or in Ringer plus 20 mM lactate. In muscles tested in August, red fiber bundles incubated in lactate demonstrated a rate of glycogen synthesis of approximately 1 mg/(g muscle . h). In muscles tested in December, red fiber bundles synthesized glycogen at a reduced rate that was not statistically different than in fiber bundles incubated in Ringer solution without lactate. Glycogen synthesis from lactate was not evident in white fiber bundles in either August or December. The period of peak gluconeogenic capacity coincides with the field active season of Dipsosaurus.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836237 TI - Post resuscitation iron delocalization and malondialdehyde production in the brain following prolonged cardiac arrest. AB - Assays for brain tissue malondialdehyde (MDA) and low molecular weight chelated (LMWC) iron were used to examine samples of the cerebral cortex obtained from dogs 2 h after resuscitation from a 15-min cardiac arrest. The effect of post resuscitation treatment with lidoflazine and/or desferrioxamine was similarly examined. Non-ischemic brain samples had LMWC iron levels (in nmol/100 mg tissue) of 12.32 + 2.60 and MDA levels (in nmol/100 mg tissue) of 8.46 + 1.35. Animals subjected to cardiac arrest and resuscitation and standard intensive care (SIC) had LMWC iron levels of 37.04 + 4.58 (p less than .01 against non-ischemic controls) and MDA levels of 12.24 + 1.9 (p less than .05 against non-ischemic controls). All treatment interventions significantly reduced the LMWC iron (p less than .05), but only treatment with desferrioxamine alone significantly reduced MDA (p less than .05), although a trend toward reduction of the MDA was also evident in animals treated with both desferrioxamine and lidoflazine. LMWC iron levels are increased in the post-ischemic brain, and this increase may be related to lipid peroxidation in the brain following resuscitation from cardiac arrest. These changes are probably pathologic and are amenable to pharmacologic intervention. PMID- 3836238 TI - Conservation of vitamin C by uric acid in blood. AB - Urate at physiological concentrations increased the stability of ascorbate in human serum approximately fivefold. These measurements were made by depleting human serum of urate with uricase. In model experiments (using phosphate buffer instead of serum), urate protected against iron-induced ascorbate oxidation and, to a lesser extent, pH-induced ascorbate oxidation. In both human serum and in phosphate buffer, urate exerted its protective effect without itself undergoing measurable oxidation as determined by spectrophotometric and high pressure liquid chromatography (HPLC) techniques. These experiments suggest an important physiological role for urate in preserving ascorbate in blood and other biological fluids. PMID- 3836239 TI - Repair of tryptophan radicals by antioxidants. AB - Oxidizing free radicals with redox potential greater than 1 V generate indole radicals, R-Ind+. and R-Ind., as in tryptophan. These resonance-stabilized free radicals can be repaired efficiently with electron donors (k = 5 X 10(6) - 1.3 X 10(9) dm3 mol-1 s-1) such as ascorbate, N,N,N',N'-tetramethyl-p-phenylenediamine dihydrochloride (TMPD), and phenolic antioxidants. Sulfhydryl compounds, which are good H-atom donors, were found to be relatively unreactive (k less than 10(6) dm3 mol-1 s-1). These indole radicals were also found to be unreactive with oxygen (k less than 10(6) dm3 mol-1 s-1). PMID- 3836240 TI - Increased liver chemiluminescence in tumor-bearing mice. AB - Spontaneous mouse liver chemiluminescence (109 +/- 6 cps/cm2) was increased in the early phase after tumor implantation in a distant position with respect to the liver. A 39% increased liver chemiluminescence was observed after 5 days of the injection of Ehrlich ascites tumor cells into the peritoneal cavity, and a 64% and a 46% increased liver chemiluminescence were measured after 8 and 14 days of the implantation of a fibrosarcoma and of an adenocarcinoma, respectively, in the leg. At the time of maximal stimulation of in vivo liver chemiluminescence by the distant tumors, cytosolic superoxide dismutase, catalase, and glutathione peroxidase activities were decreased by 18%, 38%, and 26% in the liver of mice bearing Ehrlich ascites tumors. The same three enzymatic activities were decreased by 21%, 19%, and 54% respectively, in the liver of fibrosarcoma-bearing mice. Total liver glutathione was decreased by 18% to 22% in the tumor-bearing animals. Hydroperoxide-initiated chemiluminescence was increased in the homogenates (105% and 45%) and mitochondria (64% and 34%) from the liver of mice bearing Ehrlich ascites tumors and fibrosarcomas, respectively, at the time of maximal in situ liver chemiluminescence. The hydroperoxide-initiated chemiluminescence of liver microsomes was decreased by 46% to 36% in the tumor bearing animals at the same time. It is concluded that the liver of tumor-bearing animals is subjected, during the early phase after tumor implantation, to an oxidative stress with increased steady-state levels of peroxyl radicals, which are essentially responsible for the increased photoemission observed in vivo. PMID- 3836241 TI - Autocatalytic oxidation of hemoglobin induced by nitrite: activation and chemical inhibition. AB - The nitrite ion is a direct causative agent for methemoglobinemia. Oxidation of hemoglobin to methemoglobin under aerobic conditions is induced by nitrite, catalyzed by methemoglobin in the presence of hydrogen peroxide, and inhibited by chemical reagents ranging from cysteine and ascorbic acid to sulfite. The stoichiometry of nitrate production is dependent on the initial [NO2-]/[HbO2] ratio, but reaches a limiting value of 1:1 [NO3-]: [Hb+] when [NO2-]/[HbO2] greater than 8. Ascorbic acid is an exceptionally effective inhibitor for the autocatalytic oxidation, but its use does not affect the stoichiometry of nitrate formation. Sulfite reduces nitrate production to a level that is half that observed in its absence. These chemical inhibitors act upon the rapid autocatalytic stage for hemoglobin oxidation, but they do not influence the slow direct oxidation of hemoglobin by nitrite. The autocatalytic stage for hemoglobin oxidation results from nitrogen dioxide formed from nitrite through the peroxidase activity of methemoglobin. Peroxide and methemoglobin are formed during the initiation stage by electron transfer from nitrite that is kinetically first order in oxyhemoglobin and in nitrite. PMID- 3836242 TI - Initial observations on the role of glutathione peroxidases in Euglena. AB - The algae Euglena gracilis possesses two glutathione (GSH) peroxidase: a GSH peroxidase that reduces organic hydroperoxides as well as hydrogen peroxide (GSH peroxidase 1); and a GSH peroxidase associated with GSH transferase that is active only with organic hydroperoxide substrates (GSH peroxidase 2). Preliminary experiments with Euglena were conducted to explore the in vivo role of the GSH peroxidases. The enzymes were not induced in response to the stimulation of cellular processes that generate oxidant species, such as beta-oxidation or photosynthesis. The levels of GSH peroxidase 1 were approximately twofold higher in autotrophic cultures containing the herbicide DCMU. GSH peroxidase 1 was most active in stationary phase cells; while the levels of GSH peroxidase 2 were fairly constant throughout growth. Under conditions where lipid peroxidation was induced in Euglena, the addition of either GSH peroxidase plus GSH reduced the lipid peroxide levels more than tenfold. PMID- 3836244 TI - Gas chromatography-mass spectrometry method for determination of phospholipid peroxides; I. Transesterification to form methyl esters. AB - The purpose of this study is to develop methods for determining the chemical species of lipid peroxides that occur in various types of tissue pathology. Experiments are aimed at determining the phospholipid peroxides associated with retinal degeneration as the initial test case. Phospholipid hydroperoxides are synthesized by photosensitized oxidation, chemically characterized and used to develop an effective and simplified method to identify and measure phospholipid hydroperoxides by gas chromatography-mass spectrometry (GC-MS). A sensitive reverse phase high performance liquid chromatography (HPLC) method is also presented to separate peroxidized phospholipids from phospholipids. For GC-MS, phospholipid peroxides are reduced with sodium borohydride and transesterified to form fatty acid methyl esters using a mild quaternary ammonium hydroxide catalyst. The hydroxyl groups produced by reducing the hydroperoxides are formed into trimethylsilyl ethers and GC-MS is employed (with electron ionization and negative ion chemical ionization) to identify oxidized fatty acids at the 10 ng level. Photooxidation of (palmitoyl)(linoleoyl) phosphatidylcholine yielded equal amounts of the conjugated (9 and 13 isomers) and the nonconjugated (10 and 12 isomers) linoleoyl hydroperoxides. Photooxidation of rat retina total lipids yielded oxidation products of oleolyl (18:1) esters as well as the conjugated and nonconjugated oxidation products of arachidonoyl (20:4) and docosahexaenoyl (22:6) esters virtually all of which arise from phospholipids. The nonconjugated products are of interest as indicators of photosensitized light damage in retina and other tissues. It is notable that all the possible singly oxidized products are found with the exception of the 4, 5 and 7 hydroperoxides of 22:6 and the 5 hydroperoxide of 20:4. It appears that the approach of singlet oxygen is strongly inhibited in the sterically hindered region near the phospholipid head groups. PMID- 3836243 TI - Enzymatic determination of membrane lipid peroxidation. AB - The recently purified "phospholipid hydroperoxide glutathione peroxidase" has been used to measure the membrane hydroperoxides formed during lipid peroxidation that are not substrates for the "classical" glutathione peroxidase. A spectrophotometric test in the presence of glutathione, glutathione reductase and NADPH has been used. The peroxidized membranes were added directly to the reaction mixture and the reaction was started by the addition of the enzyme. Triton X-100 exerted a stimulatory effect. Phospholipid hydroperoxide glutathione peroxidase allows a rapid, sensitive, accurate and specific determination of membrane hydroperoxides, the most quantitative index of lipid peroxidation. Glutathione peroxidase can be used in the same test to measure other hydroperoxides such as the cumene hydroperoxide used to induce the peroxidation. PMID- 3836245 TI - A relay model of lipid peroxidation in biological membranes. AB - It is believed that in lipid peroxidation in membranes an important role is played by unoxygenated hydrocarbon radicals whose movement within the hydrocarbon moiety of the membrane is through intra-and intermolecular relay rearrangements (H-shift). in membranes containing a high concentration of polyunsaturated lipids, mobility may be higher than the lateral diffusion of the lipids allowed by the microviscosity of the membrane. The action mechanism of antioxidants having a side hydrocarbon tail (e.g., tocopherols) rests upon the relay radical reaction, as a multistep process. The initial step is the relay transfer of unoxygenated free radical to the side hydrocarbon chain of antioxidant. In subsequent steps the aroxyl radical is formed by the intramolecular rearrangement of radical in an antioxidant molecule. Hence, the inhibitor interrupts the propagation chain in the membrane by the scavenge of unoxygenated hydrocarbon radical. PMID- 3836246 TI - Phospholipase A2 dependent release of fatty acids from peroxidized membranes. AB - Unilamellar vesicles (liposomes) consisting of liver phosphatidylcholine and phosphatidylethanolamine were used as model membranes and subjected to lipid peroxidation. Following peroxidation samples were treated with phospholipase A2 from snake venom and subsequently analyzed for products of lipid peroxidation and of phospholipase A2 action. A significantly increased susceptibility to phospholipase A2 was noted for liposomes subjected to peroxidation, as compared to controls, which correlated with the extent of lipid peroxidation measured by the formation of thiobarbituric acid reacting products and conjugated dienes. Low levels of peroxides were detected in control liposomes and these peroxidases were rapidly cleaved by phospholipase A2, such that nearly 40% of the total peroxide content was associated with free fatty acids after l5 min incubation. Oxidized liposomes contained over seven fold the level of lipid peroxidation products, and the were also rapidly cleaved by phospholipase A2 where over 50% were recovered as free fatty acids following l5 min of exposure to phospholipase A2. Along with this high order of removal of oxidized fatty acids, a marked hydrolysis of intact fatty acids was also observed. The extent of fatty acid release was roughly correlated with the degree of fatty acid unsaturation. A substantial increase in the release of arachidonic acid was found when peroxidized membranes were analyzed. PMID- 3836247 TI - Antipsoriatic drug action of anthralin: oxidation reactions with peroxidizing lipids. AB - Reactions of anthralin with peroxidizing lipids were investigated. Using ESR spectroscopy and quantitative HPLC analysis radical species and decomposition products respectively were analysed in the reaction mixture as a function of time. Directly after mixing anthralin with peroxidized lipids, the 1,8-dihydroxy 9-anthron-10-yl radicals (primary radical) and small amounts of 1,8-dihydroxy anthraquinone (AQ) were formed. After a few days of reaction, two secondary radicals were observed in addition to the primary radical. At the same time, 1,8,1'8'-tetrahydroxy-10,10'-bis-9(10H)-anthrone (DI) and an increasing amount of AQ and other nonidentified decomposition products were found. As the reaction proceeded further on the amount of AQ and the nonidentified decomposition products increased, the primary radical disappeared (within about 40 d) and the concentration of DI decreased to zero (within 1 yr). Nonidentified decomposition products are tentatively assigned to polymeric degradation products (anthralin brown) formed from DI via the observed secondary radical species. These radical reactions of anthralin with peroxidized lipids help to elucidate speculations on radical type reactions of anthralin in psoriasis indications, e.g., the role of peroxidized skin lipids as radical reaction initiators. PMID- 3836249 TI - Reactivity of ozone towards micelle incorporated unsaturated compounds. AB - Incorporation of reactive substrates (i.e., lipids) to membranes could protect them towards ozone mediated chain oxidation processes. We have measured the effect of incorporation of unsaturated compounds (stilbene or alkyl methacrylate) in sodium dodecyl sulfate micelles on their reactivity towards ozone. It is found that incorporation of substrate in the micellar pseudophase barely modifies their reactivity towards ozone. The same conclusion is reached when stilbene is incorporated to di-octadecyl-dimethylammonium chloride vesicles. These results would indicate that incorporation of a reactive olefinic compound to a lipidic microphase does not provide "per se" an efficient protection towards its attack by ozone. PMID- 3836248 TI - Lack of cross-resistance to X-irradiation in oxygen-resistant mammalian cell lines. AB - HeLa and Chinese hamster ovary cells capable of proliferating at O2 levels that are ordinarily lethal to cells in tissue culture were selected by chronic adaptation to stepwise increased oxygen tensions. A popular hypothesis, originally proposed by Gerschman et al., states that the toxic action of both hyperoxia and X rays is based on a common mechanism involving the formation of oxidizing free radicals. Contrary to what may be predicted from this hypothesis we found that our oxygen-resistant substrains were not cross-resistant to X rays, as determined by a clonogenic cell survival assay. These results show that cellular properties governing increased resistance to killing by O2 do not necessarily contribute to cellular X ray tolerance. PMID- 3836250 TI - Microplanning of problem niches to combat malaria under modified plan of operation, NMEP-India. PMID- 3836251 TI - Dynamics of malaria transmission with reference to development projects in Nepal. PMID- 3836252 TI - Implication in the control of malaria vectors with insecticides in tropical countries of South-East Asia region. Part II--Consequences of insecticide use. PMID- 3836253 TI - Mucosal and humoral responses in giardiasis. PMID- 3836254 TI - Kala-azar in Tirunelveli District, Tamil Nadu with possible zoonotic foci. PMID- 3836255 TI - Further observations on the susceptibility status of A. aconitus to DDT in Java, Indonesia. PMID- 3836256 TI - Some entomological observations in a suspected plague outbreak area of District Shimla (Himachal Pradesh). PMID- 3836257 TI - Effect of prednisolone on glycogen of denervated muscle. PMID- 3836258 TI - Pattern of malignant neoplasms in Bhagalpur area. PMID- 3836259 TI - A study on caesarean section in a rural hospital. PMID- 3836260 TI - C-reactive protein in early diagnosis of neonatal sepsis. PMID- 3836261 TI - Malignant neuroleptic syndrome. PMID- 3836262 TI - Chronic extradural haematoma. PMID- 3836263 TI - Sequelae of pulmonary tuberculosis. PMID- 3836264 TI - Preliminary technical, experimental and clinical results of the use of the HPLR 27 system for the treatment of deep-seated tumours by hyperthermia. AB - Based on the theoretical deep penetration of radio frequencies, we have developed several 27.12 MHz ridged wave guides, with large apertures, and filled with circulating deionized water. Different low impedance matching networks have been tested and a 0-800 W power generator has been designed for this particular clinical use. This can be driven easily by a microcomputer which is used to regulate the temperature at depth by varying the sequencing time and/or by adjusting the RF power. The complete system, known as HPRL 27, is manufactured by Sairem Ets. Studies of the spatial power density distributions show a relatively homogeneous RF field for an aperture greater than 30 X 14 cm. Preliminary heating patterns studied in phantoms indicate the possibility of treating volumes greater than 2000 cm3 within the 50 per cent isotherm. Maximum heating is observed between 2 and 5 cm deep with passive cooling, and between 3 and 6 cm deep with active cooling, in which case the 50 per cent isotherm is situated between 2 and 10 cm deep. Preliminary phase I clinical results on 20 patients with pelvic or thoracic carcinomas show the possibility of heating deep-seated tumours to above 42 degrees C with a good patient tolerance. Temperature is controlled by implantable catheters or in the case of pelvic heating, by inserting catheters into the vagina, the rectum and the bladder. This new device is well adapted for the treatment of pelvic tumours. PMID- 3836265 TI - Effect of fractionated heating on the blood flow in normal tissues. AB - The changes in blood flow in the skin and muscle of rat by single, two or six heatings, were measured with the radioactive microsphere method. The blood flow rose continuously during the 2 h heatings at temperatures up to 43.0 degrees C and 44.0 degrees C in the skin and muscle, respectively. When heated at higher temperatures, the blood flow increased and then decreased. When heated twice at 43.5 degrees C for 1 h each, the magnitude of the increase in blood flow by the second heating varied depending on the time interval between the two heatings; e.g., the second heating on the 14th day after the first heating induced an increase in blood flow much greater than that by the first heating. When the heating at 43.5 degrees C for 1 h was repeated at intervals of five days, the second and third heatings were as effective as the first heating in increasing the skin blood flow. In the muscle, the second and third heatings were 2-3-fold more effective than the first heating in raising the blood flow. The heat-induced increase in blood flow in the skin and muscle gradually diminished from the fourth heating. The tissue temperature varied considerably during heating with a water bath at a constant temperature, due probably to the changes in blood flow. PMID- 3836266 TI - Strand break repair, DNA polymerase activity and heat radiosensitization in thermotolerant cells. AB - HeLa S3 cells were made thermotolerant by 'chronic' (5 h at 42 degrees C) or 'acute' (15 min at 44 degrees C followed by 5 h at 37 degrees C) heat treatments. Cell survival, repair of radiation-induced DNA strand breaks, alpha and beta DNA polymerase activity and radiation sensitivity following hyperthermia were all measured in both control and thermotolerant cells. The ability to repair DNA strand breaks correlated well with cell survival following hyperthermia. Hyperthermic inhibition of strand break repair was reduced in thermotolerant relative to control cells, although the thermal tolerance ratios for repair were less than for hyperthermic cell killing. Both radiosensitization and DNA polymerase inactivation by hyperthermia were only slightly reduced in thermotolerant relative to control cells. Hence a poor correlation was found between these two parameters and hyperthermic cell survival. For all heat treatments applied, alpha and beta DNA polymerase activity correlated well with the extent of hyperthermic radiosensitization. PMID- 3836267 TI - Studies on fractionated hyperthermia in L1A2 tumour cells in vitro: response to multiple equal heat fractions. AB - The development of thermotolerance in L1A2 cells in vitro was investigated after fractionated hyperthermia at 42 degrees C. A single pretreatment of 90 min at 42 degrees C resulted in maximal thermotolerance at a 10 h fractionation interval with a thermotolerance ratio (TTR) of approximately 4.5. Thermotolerance was maintained at this level if the cells were exposed to 1-3 additional 90 min pretreatments separated by 10 h intervals. At a 6 h fractionation interval, where thermotolerance was still developing, additional 90 min pretreatments raised the level of thermotolerance to the level induced by the 10 h interval; the TTR increased from 2.1 to 4.5. Intervals of 20 and 24 h, at which there was decay but not complete disappearance of thermotolerance, did not induce such a build-up, and the TTR remained constant at 2.5 and 1.6, respectively. With 2 h fractionation intervals, where a single pretreatment did not induce thermotolerance, no thermotolerance was induced by additional pretreatments. With a shorter preheating time (e.g. 45 min at 42 degrees C) administration of a single pretreatment induced maximal thermotolerance after 6 h with a TTR of 3.0; additional 45 min pretreatments separated by 6 h intervals maintained this level. The thermotolerance induced by multifractioned hyperthermia as described above decayed in a similar way to that of cells exposed to a single pretreatment. PMID- 3836268 TI - Tumour response to heat and radiation: prognostic variables in the treatment of neck node metastases from head and neck cancer. AB - A total of 38 patients with 81 multiple neck node metastases from squamous cell carcinoma of head and neck were treated with radiotherapy alone or with radiotherapy plus hyperthermia. Irradiation was delivered following a three fractions per day schedule of 2 + 1.5 + 1.5 Gy/day, with 4 h intervals between fractions, up to a total dose of 60 Gy. Heat was applied by means of a 500 MHz apparatus. Temperature data were converted to equivalent minutes at 42.5 degrees (Eq 42.5). Initial complete response rates and local control distribution were compared for subgroups of tumour volume and thermal dose. The data indicated that the volume effect was less pronounced in the combined modality than in the radiation alone arm, suggesting that the addition of heat was more damaging to the large than to the small lesions. A striking thermal dose-response relationship was shown, although complete response rates increased only after a certain thermal dose was accumulated, clearly indicating the presence of a threshold dose. PMID- 3836269 TI - Local control and distant metastases in primary canine malignant melanomas treated with hyperthermia and/or radiotherapy. AB - Forty-three dogs with primary malignant melanoma were randomized to receive radiotherapy alone (XRT) or hyperthermia plus radiotherapy (delta + XRT). Tumour responses were analysed in terms of complete response rates, rate of one year disease free survival and the incidence and time to develop distant metastasis. The frequency of complete responses (CR) was greater with adjuvant heat (76 per cent vs 21 per cent for XRT; P = 0.001). A trend towards an improvement in one year disease free survival was observed with delta + XRT (23.8 per cent) as compared with XRT (7.7 per cent), but the difference was not statistically significant. The frequency of distant metastases was not different between the two treatments. Descriptors of intratumoural temperatures achieved during therapy indicated that higher CR rates could be achieved with higher minima. When minima were less than and greater than 20 Equivalent minutes at 43 degrees C (Eq43) the CR rates were 64 and 90 per cent, respectively. One year disease free survival rates and frequencies of distant metastases seemed to be correlated with the intratumoural temperatures as well. This was reflected in analyses examining temperature minima and maxima. Examination of patterns of failure suggested that the most plausible explanation for the correlation between intratumoural temperature and metastases was the high local failure rate (70 per in the heated group). The results of this study emphasize the need for further investigation of the influence of local hyperthermia as a part of curative therapy on the frequency of distant metastases. PMID- 3836270 TI - Experimental studies of thermotolerance in vivo. I. The baby rat tail model. AB - A detailed study of the kinetics and magnitude of thermotolerance has been made using the endpoint of loss of vertebrae in the baby rat tail. A range of different priming treatments was used and for analysis each priming treatment (PT) was given in terms of the heat sensitivity of the tissue as defined by the single treatment (Ds) required for a given effect, i.e. fractional priming treatment PT/Ds. A considerable degree of thermotolerance could be induced so that at maximum the tissue sensitivity was reduced by a factor of more than four in heating time to produce a given effect, or by more than the equivalent of 2 degrees C. The main results of the study were: (a) that the time to reach maximum thermotolerance depends primarily on PT/Ds, independent of the particular conditions used in the priming treatment; (b) that the extent of the maximum also depends primarily on PT/Ds, but the precise form of the relationship depends on the method used to define thermotolerance; and (c) that the rate of decay of thermotolerance is independent of the priming treatment. The implications of these results for clinical hyperthermia are briefly discussed. PMID- 3836271 TI - Interaction of hyperthermia and rhodamine 123 in HeLa S-3 cells in culture. AB - It has previously been shown that the capacity to continue energy production by either oxidative or glycolytic metabolism is a pre-requisite for cellular survival at elevated temperatures. Since rhodamine 123 is a specific mitochondrial binding agent that inhibits oxidative phosphorylation, the present experiments were carried out to examine the influence of cell exposure to the drug which reduces the energy production at elevated temperatures. Exposure of HeLa cells to rhodamine 123 (10 micrograms/ml) up to 4 h was not cytotoxic in the presence or absence of glucose in the medium at 37 degrees C. Prolonged exposure of cells to the drug up to 24 h was quite cytotoxic when glucose was removed from the medium. When cells were exposed to rhodamine 123 at elevated temperatures (up to 42 degrees C) for 4 h, there was a pronounced enhancement of cell kill in the glucose-deprived cells. No enhanced effects of heat were seen in the glucose-fed cells. Hyperthermic treatment under the acidic pH did not further enhance the cytotoxic effects of heat in the glucose-deprived cells; instead, the cell kill under the influence of reduced pH was far less than the cytotoxicity observed at pH 7.4. Selective enhancement of hyperthermic cytotoxicity in glucose-deprived cells by rhodamine 123 appears to be in agreement with the concept that cell kill by heat is dependent on the critical level of cellular energy equilibrium. PMID- 3836272 TI - Effect of external K+ on protein and DNA synthesis during and after heat shock in rat hepatoma cells. AB - The effects of extracellular K+ concentrations on protein and DNA synthesis after non-lethal heat shock were studied in the hepatoma cell lines Reuber H35 and HTC. Elevation of the extracellular K+ concentration by equimolar replacement of Na+ by K+ in growth media of Reuber H35 and HTC cells caused an increase of the intracellular K+ content in both cell lines. This property was subsequently used to study the effect of elevated intracellular K+ concentrations on protein and DNA synthesis after hyperthermic treatment at 42 degrees C for 30 min. In normal K+ medium, protein and DNA synthesis were inhibited rapidly after the start of the hyperthermic treatment in both Reuber H35 and HTC cells. Increasing the external K+ concentration of the medium did not influence the inhibition and subsequent recovery of protein synthesis after heat shock in both cell lines. In contrast, in media with elevated K+ concentrations, DNA synthesis after heat shock was inhibited less in Reuber H35 cells than in cells incubated in normal K+ medium and, furthermore, showed no inhibition in HTC cells. The protective effect of external K+ on DNA synthesis after heat shock was maximal between 50 and 70 mM in the temperature range 42-44 degrees C. PMID- 3836274 TI - A multiple RF heating system for experimental hyperthermia in small animals. AB - A versatile system is described for locally heating a number of mouse tumours simultaneously using RF capacitive coupling. The system is designed around a single RF power amplifier supplying a number of heating jigs via an efficient isolated power splitter. It is primarily intended for use at 13.56 and 27.12 MHz, but can operate from 2-30 MHz and could be modified for use at other frequencies. Microthermocouples are used for monitoring the intra-tissue temperature quasi continuously, by making temperature measurements every 220 ms within 20 ms periods during which the RF power is turned off to all the jigs. This method avoids any artefacts in the temperature measurement which are associated with electromagnetic interference. Thermostatic regulation of tissue temperature is provided by on-off control of the average power supplied independently to each heating jig. PMID- 3836273 TI - Estimation of complete temperature fields from measured transient temperatures. AB - In hyperthermia treatments, it is desirable to be able to predict complete tissue temperature fields from the limited number of sampled temperatures available. Because of the unknown tissue blood perfusion this is a particularly difficult problem, whose eventual solution will require a considerable effort. An initial attempt to develop methods to solve this problem automatically using unconstrained optimization techniques (which minimize the differences between measured steady-state temperatures and the temperatures predicted from treatment simulations) has been reported previously. A second technique using transient temperatures following a step decrease in power has been developed and is presented and discussed in this paper. The results of applying both it and the steady-state technique to simulated hyperthermia treatments are compared for one dimensional situations. This transient technique predicts complete temperature fields more accurately and robustly than the steady-state approach. In particular, it can better predict the complete temperature fields in situations where the number of unknown blood perfusion parameters is greater than the number of available temperature sensors. PMID- 3836275 TI - Field penetration of arrays of compact applicators in localized hyperthermia. AB - The three-dimensional analysis of a range of new compact applicators indicates that there is an optimum operating frequency for maximum depth of field penetration and a given applicator size. The prospect of obtaining increased penetration depth by deploying more than one applicator is considered and assessed for an equi-phase array of compact applicators arranged symmetrically around a cylindrical shaped volume of uniform muscle phantom material; field penetration curves enable the maximum cross-section that can be heated to be assessed. Experiments at 200 MHz and results from a three-dimensional analysis demonstrate the usefulness of the assessment and establish that in multi applicator configurations the field penetration decreases markedly for cross sectional diameters in excess of 10 cm. However, the three-dimensional analysis for four applicators also shows that more uniform fields are obtained in the muscle phantom when it is surrounded by a low loss bolus region. In conclusion the clinical implications of the investigations are briefly discussed. PMID- 3836276 TI - Cholesterol content and heat sensitivity of nine mammalian cell lines. AB - The cholesterol, phospholipid and protein contents of nine mammalian cell lines, three lymphoid and six attached cell lines, were measured, along with the sensitivity of the cells to hyperthermia at 42 degrees and 44 degrees C. The free cholesterol content and the protein content per cell correlated positively with the time required to kill 99 per cent of the cells at 44 degrees C. The phospholipid content showed a less significant positive correlation whilst the cholesterol ester content and the cholesterol:phospholipid molar ratio did not correlate with heat sensitivity. There were no correlations observed when the levels of these cell components were compared to heat survival at 42 degrees C. As the three lymphoid lines are small, very heat sensitive cells, the six monolayer lines were analysed separately. In this case, only the protein and the free cholesterol content maintained a significant correlation (at the 5 per cent level). It is concluded that the levels of cholesterol or phospholipid cannot be used as reliable indicators of the heat sensitivity of a cell. PMID- 3836277 TI - Acute and late damage in mouse tail following hyperthermia and X-irradiation. AB - Tissue injury following X-irradiation of adult mouse tail was assessed by: (a) the severity of the acute skin reaction, which appeared on day 13 and peaked at approximately 20 days after treatment; (b) the occurrence of necrosis by three months; and (c) the incidence of "late' necrosis which developed between 6.5 and 11 months after treatment, in tails whose gross appearance was normal at 3 months. Hyperthermia (44.0 or 44.5 degrees C for 30 min, by hot-water immersion) given 9 days after radiation, i.e. close to the time of appearance of the acute skin reaction, resulted in an increased thermal response and, in addition, an increase in tissue response for all three waves of radiation injury studied. The times of expression of injury remained unaltered and the degrees of thermal enhancement of both early and "late' necrosis were similar to that measured for the acute skin reaction following radiation. All values were significantly lower than the thermal enhancement ratio (TER), measured as a result of a primary interaction between heat and radiation when the two modalities are given in close association. The observed increase in "late' injury could be accounted for by thermal potentiation of the acute radiation response; there was no evidence for a significant exacerbation by a "late' or progressing thermal injury. PMID- 3836278 TI - Thermotolerance after fractionated hyperthermia: assessment of cell survival by response to X-rays. AB - A previous study of the mouse ear showed that daily treatment at 43.5 degrees C, either 10 X 20 min or 20 min + 9 X 70 min, induced the same resistance to further heating as was induced by a single treatment of 20 min. The results could be explained in at least two ways: (a) no cells are killed by the heat treatments but thermotolerance is induced; and (b) a proportion of cells is killed by each fraction and the degree of thermotolerance induced in survivors increases as the number of fractions is increased. These two possibilities were tested by measuring the response to X-rays at 24 h after various regimes of fractionated hyperthermia. At this time interval the enhancing effect of a single heat treatment would have decayed, so that radiosensitivity should then be related to the number of surviving cells. Up to 49 daily treatments of 20 min had little effect on radiosensitivity, suggesting that these heating regimes did not cause a significant reduction in the number of basal epidermal cells. A regime of 20 min + 4 X 70 min daily also had little effect but a treatment of 20 min + 9 X 70 min daily increased the radiation response, suggesting that the more severe heat treatment had reduced cell survival to approximately 4 per cent. PMID- 3836280 TI - The influence of ionic environment on the thermal response of cultured mammalian cells. AB - Chinese hamster cells exposed to monovalent or divalent ionic solutions were sensitized to hyperthermia treatment. Thermosensitization was dependent on the type of cationic salt. Divalent salt solutions caused greater sensitization than monovalent salt solutions. The addition of glucose or the reduction of pH in the salt solutions did not alter thermosensitivity. PMID- 3836279 TI - Heat protection by sugars and sugar analogues. AB - We have examined the relative ability of 16 sugars and sugar analogues to reduce cell killing by hyperthermia of 40 min, 45 degrees C. In general, sugars were added to the culture medium 6 h prior to heating at a concentration of 100 mM (400 mosmol). The results show that D-hexoses, L-hexoses, methylated or thiolated sugars and disaccharides significantly protected cells against thermal damage, increasing survival by factors of 10 to 100. The degree of protection varied for specific sugars and could not be predicted on the basis of sugar conformation or the number of hydroxyl groups. Relative heat protection was partially dependent on the survival assay technique (pre- and post-plating); consistently lower cell survival was measured when cells were subcultured after hyperthermia, both in medium-control and sugar-protected cells. However, the time dependence of heat protection appeared independent of pre- and post-plating. Cell survival after heating was not increased by two sugars: (a) D-idose, and (b) 2-deoxy-D galactose. The latter sugar, curiously, was also a heat protector but only when cells were trypsinized after hyperthermia. Both of these sugars were relatively more toxic at 37 degrees C under identical treatment conditions. The lack of protection by these two sugars is not understood. Another reported non-sugar heat protector, sodium butyrate, was included as an additional control. Heat protection by butyrate was not observed in CHO cells. The accumulation of intracellular free sugar was measured by gas chromatography after incubating cells for 6 h, 37 degrees C with talose, idose, L-galactose or 1-O-methyl-D glucose. All of these sugars were found in high concentrations inside of cells. The data are consistent with the hypothesis that polyhydroxy compounds must accumulate intracellularly for cellular heat protection. PMID- 3836282 TI - Erythema ab igne: a model of hyperthermic skin damage and carcinogenesis in humans? PMID- 3836281 TI - Comment on 'Theoretical limitations on radiation into muscle tissue'. PMID- 3836283 TI - Third meeting of the Working Group on Peripheral Circulation. Palermo, September 6-8, 1984. PMID- 3836284 TI - Computerized monitoring of the EMG and EEG during anesthesia. An evaluation of the anesthesia and brain activity monitor (ABM). AB - An intraoperative evaluation was made of the electroencephalographic (EEG) and electromyographic (EMG) functions of the Anesthesia and Brain activity Monitor (ABM). This device derives both these measures from a single electrode pair that is typically placed on the mid-forehead and mastoid process. The evaluation consisted of 1) quantifying the zero-crossing frequency (ZXF) of the EEG and mean integrated voltage of both measures (MIVEEG and MIVEMG) that occurred during induction and emergence from general anesthesia in 17 patients and 2) case reports sampled from an additional 41 patients. Alone or combined, variations in these parameters did not consistently accompany changes in the depth or adequacy of anesthesia as determined by standard clinical signs (e.g. heart rate, blood pressure, movement). Interpatient variability in the EEG measures during recovery from anesthesia was so large that neither the absolute value of ZXF nor that of MIVEEG could discriminate between moderate (i.e., maintenance) and light (i.e., emergence) anesthesia. Although MIVEMG uniformly decreased in anesthetized, unparalyzed patients (compared to the pre-operative awake state), noticeable increases during recovery often did not occur until limb movement was observed. Additionally, the common use of neuromuscular blockers made interpretation of low MIVEMG values quite difficult during anesthesia maintenance. However, selected individual case reports illustrated the potential benefit of routine intraoperative, microprocessor-based EEG/EMG monitoring. The single channel EEG/EMG display of the ABM seems sufficient to warn the anesthesiologist of pathologic decreases in cerebral electrical activity. Marked depression of cerebral function is associated with accidental anesthetic overdose, hypoxia or global ischemia. Additionally, the device should be useful for monitoring burst suppression or isoelectric EEG patterns intentionally produced during barbiturate or isoflurane coma for cerebral protection. PMID- 3836285 TI - Evaluation of an apparatus for continuous monitoring of gas exchange in mechanically ventilated patients. AB - Indirect calorimetry has been integrated with a commercially available ventilator, permitting continuous monitoring of energy expenditure and respiratory quotient. This equipment, the ventilator Erica, the Engstrom metabolic computer EMC and the carbon dioxide analyzer Eliza (Gambro Engstrom AB, Sweden) was evaluated in laboratory tests and in critically ill patients. In the laboratory evaluation, the variability in FIO2 was less than 0.05% at FIO2 less than 0.47. The linearity error of the oxygen sensor and the CO2 analyzer was less than 0.06%. The variability of the oxygen sensor was 0.01% O2 and of the CO2 analyzer 0.04% CO2. The CO2 analyzer was sensitive to oxygen concentration and underestimated CO2 concentration by 3.3% at FIO2 = 0.5 if calibrated on room air. The pneumotachometer was oxygen dependent and overestimated inspired volume by 5.5% at 100% O2, if calibrated on room air, and was negligibly affected by changes in minute volume or PEEP within the physiological range for adults. In the patient evaluation, 15 measurements of gas exchange were performed in 9 critically ill patients and the results were compared with data obtained simultaneously by the Scholander technique or mass spectrometry. The standard deviation of the mean difference in comparison with the reference methods was 9.4% for O2 uptake, 6.6% for CO2 elimination, 12.5% for respiratory quotient and 3.9% for minute volume. Paired t-test analysis showed no systematic difference between the various methods. It is concluded that the EMC has an accuracy sufficient for clinical use and represents a commercially available technique of potential clinical value. PMID- 3836286 TI - Reliable detection of inspiration and expiration by computer. AB - A new computer assisted method is proposed to distinguish between the inspiratory and expiratory phases of breathing. The method is based on the analysis of both gas flow and CO2-concentration. The algorithm is effective and reliable and is most suitable in critical care patients when an uninterrupted sequence of breaths is to be analysed immediately at the bedside. Marked variations in tidal volume such as are seen in intermittent mandatory ventilation or spontaneous breathing during the phase of weaning from the ventilator, artefacts such as mechanical vibrations of the flow transducer or its connecting tubes do not disturb the analysis. PMID- 3836287 TI - Transcutaneous PO2 poorly estimates arterial PO2 in adults during anesthesia. AB - We compared values of PaO2 and transcutaneous PO2 in 21 adult patients during anesthesia. In 282 simultaneous determinations during anesthetic periods of 3-10 h, transcutaneous PO2 was a poor predictor of absolute PaO2 and changes in PaO2. Transcutaneous PO2 monitoring in adults during anesthesia is of unproven value. PMID- 3836288 TI - Computerized slide-making. PMID- 3836289 TI - Audible alarm signals for anaesthesia monitoring equipment. AB - To address the problem of auditory alarms on anaesthesia monitoring and delivery devices whose signal is masked by the noises of other operating room equipment, a set of signals having the characteristics of spectral richness, frequency modulation, and temporal patterning were electronically generated, and were tested for detectability against operating room equipment noises in a laboratory setting. A set of signals was identified which can, under these circumstances, be detected with at least 93% accuracy at -24 dB signal-to-noise ratio. PMID- 3836290 TI - Mucin histochemistry of colonic mucous cells with lectin-colloidal gold complex. PMID- 3836291 TI - Effects of haemorrhage on myocardial metabolism. PMID- 3836292 TI - Comparative study of the different methods of collection of sputum samples in tuberculous patients. PMID- 3836293 TI - Isolation, characterization and the mechanism of action of AS-IBBR, polypeptide antibiotic. PMID- 3836294 TI - Survey of hepatitis B surface antigenemia in Al Zahraa Hospital. PMID- 3836295 TI - Minoxidil in a once-a-day step-3 antihypertensive program. AB - Convenience of medicine-taking and lack of side effects are two major factors that favor compliance. Using a simple and convenient once-a-day regimen of minoxidil, nadolol, and chlorthalidone, we treated successfully 30 patients with moderate to severe hypertension. All patients were previously taking at least three medications, usually three to four times a day. Treatment was started with nadolol (160 mg) and chlorthalidone (50 mg) once daily. If diastolic blood pressure remained above 90 mmHg, minoxidil was added at a starting dose of 2.5 mg/day and increased weekly until blood pressure was controlled or the maximum dose of 100 mg/day was reached. The average blood pressure decreased from 170.9/107.0 mmHg (sitting) and 174.1/110.8 mmHg (standing), before the addition of minoxidil, to 138.8/86.7 mmHg (sitting) and 140.0/89.5 mmHg (standing), at the third month of minoxidil therapy. At the sixth month of minoxidil therapy, the figures were 140.9/86.3 and 141.9/89.8 mmHg. With this single-dose program, smooth blood pressure control throughout 24 hours was documented by 24-hour ambulatory blood-pressure monitoring. Hypertrichosis was common but was bothersome only to women patients. Pericardial effusions occurred in five patients, but they were all small and asymptomatic. Subjective side effects of the regimen were usually so mild that all patients who completed the study decided to remain on the same regimen. PMID- 3836296 TI - Effect of seasonal temperature change on blood pressure in a treated hypertensive population. AB - To determine the effect of seasonal temperature variation on blood pressure and weight, we conducted a chart review of 39 male patients observed at the Milwaukee VA Medical Center Hypertension Clinic for a 6-year period between 1976 and 1983. Information on blood pressure and body weight was extracted from the charts for the four seasons of spring, summer, fall, and winter. No significant differences were noted in the blood pressure or body weight of our patients during the four seasons using a paired t-test. PMID- 3836297 TI - The effects of treatments with labetalol and hydrochlorothiazide on ventilatory function of asthmatic hypertensive patients with demonstrated bronchosensitivity to propranolol. AB - Fifty-two asthmatic patients with mild to moderate hypertension were screened for bronchosensitivity to propranolol in a double-blind randomized fashion after a 2 week minimum placebo run-in period. Thirty-five patients qualified on the basis of a decrease in 1-second forced expiratory volume FEV1 by greater than or equal to 20% after 80 mg of propranolol with no more than a +/- 15% change after placebo. Of these patients, 18 were then randomly assigned to antihypertensive treatment with labetalol at doses that were increased at weekly intervals (100, 200, 400, 600 mg BID) and 17, with hydrochlorothiazide (HCTZ) (25 or 50 mg BID) as needed for control of hypertension. At each placebo washout visit and at each of the four active drug-treatment phase visits, spirometric measurements were obtained just prior to the morning dose of medication and again 2 hours later on the initial visit (i.e., following the initial dose of active treatment) and on each visit when the dosage was increased. Neither HCTZ nor labetalol (average daily doses at the end of the study were 88 and 555 mg, respectively) caused bronchoconstriction: Mean FEV1 did not change from the baseline neither prior to the morning dose (evaluation of the "chronic" treatment effect) nor 2 hours after dosing (evaluation of "acute" treatment effect). Three patients in each treatment group reported increased dyspnea and two on labetalol and one on HCTZ had increased wheezing; the mean weekly isoproterenol usage per patients was similar for the two treatments (1.3 times/week/pt for labetalol and 1.6 times/week/pt for HCTZ).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836298 TI - The use of labetalol for the treatment of hypertension in patients with reversible airway obstruction. AB - Beta-adrenergic blocking agents are commonly used for the management of hypertension, cardiac arrhythmias, and angina pectoris; several of these agents are now available for clinical use (1-5). A significant side effect of these agents in patients experiencing reversible airway obstruction is that they block the effects of beta-adrenergic agonists and can precipitate or worsen bronchospasm (6-8). Labetalol, a new adrenergic antagonist with both alpha- and beta-adrenergic blocking effects, has been shown to have certain advantages for the management of hypertension and is widely used for this purpose in many countries (9). To evaluate its effects on airway resistance in patients with obstructive lung disease, the authors conducted two separate clinical studies. This article summarizes the results of these trials. PMID- 3836299 TI - The management of severe hypertension with minoxidil in a once-a-day treatment regimen. AB - We evaluated the antihypertensive efficacy of "once-a-day" minoxidil, given in conjunction with a diuretic and sympatholytic, and the effect of this simple regimen on patient compliance. Twenty-one severely hypertensive patients had their existing antihypertensive regimens changed to a single daily dose of chlorthalidone (50-100 mg) and either nadolol (160 mg) or reserpine (.25 mg) for a 3-week period. After stabilization on these two drugs, a single daily dose of minoxidil (2.5 mg) was added to each patient's regimen. Doses were titrated as necessary to achieve diastolic blood pressures of less than 90 mmHg. After 3 and 6 months of maintenance therapy, blood pressures were measured 24 hours after the previous day's dosing to evaluate the persistence of the antihypertensive effect. Twenty-four-hour blood pressure control was achieved on 76% of these occasions, and on at least one occasion in 90% of the patients. In addition, compliance was excellent. PMID- 3836300 TI - The use of transcutaneous clonidine hydrochloride in the patient with diabetes mellitus and mild hypertension. AB - The effectiveness and safety of transdermally administered clonidine hydrochloride was assessed in 16 patients with type-II diabetes mellitus. This group of patients was chosen because of the frequent occurrence of hypertension in diabetic patients and potential problems with transdermal absorption of medication because of small vessel disease. A skin patch containing clonidine hydrochloride (Catapres TTS) was applied at weekly intervals after an appropriate placebo lead-in period. Satisfactory response to therapy was seen in 15 of the 16 patients. One patient developed a generalized skin rash and was withdrawn from the study. Correlation between change in diastolic blood pressure and plasma clonidine levels was noted. Of note was the absence of the usual side effects (drowsiness, dry mouth, etc.) seen with oral clonidine administration. This study thus highlights the success of transdermal clonidine therapy in controlling blood pressure in the mild hypertensive patient with diabetes mellitus. PMID- 3836302 TI - [The university, the lecturer and the student]. PMID- 3836301 TI - Safety and efficacy of guanabenz in hypertensive patients with moderate renal insufficiency. AB - Eight hypertensive patients with moderate renal insufficiency were treated with gradually increasing oral doses of guanabenz acetate to a maximum dose of 8 mg BID. Patients' medications were titrated over 8 weeks. Once blood pressure control was achieved (seated diastolic blood pressure, 90 mmHg, or decrease of 10 mmHg from baseline values), drug dosages were maintained for up to a 12-week total treatment phase. Patients had significant reductions of blood pressure during treatment with guanabenz as compared to that during pretreatment levels. No changes in body weight or creatinine clearance were evident, as compared to baseline values. Our data suggest that guanabenz, in relatively small doses, can be used as safe and effective monotherapy of essential hypertension in patients with moderate renal insufficiency. PMID- 3836303 TI - The iodine content of fresh milk samples in Natal and the effect of iodophor teat dips on milk iodine content. AB - The iodine content of fresh milk samples from bulk milk transport vehicles (tankers) and from bulk tanks on individual farms was determined. Approximately 75 percent of all the samples fell within the normal range of 25 to 300 micrograms iodine/l of milk. The mean iodine concentration in the tanker samples was 257 micrograms/l and in the farm tank samples 294 micrograms/l, while the medians of the iodine concentrations in the surveys were 214 and 218 micrograms/l respectively. A total of 1.75 percent of the tanker samples and 5.5 percent of the individual farm samples contained more than 1000 micrograms/iodine/l, a level which is considered to be undesirable for human consumption. Iodine containing teat dips (2000 mg available iodine/l) increased the iodine concentration of the milk of cows treated with these teat dips by between 11 and 60 micrograms/l. PMID- 3836304 TI - Blood chemical parameters in free-living white rhinoceros Ceratotherium simum. AB - Serum concentrations of sodium, potassium, chloride, total protein, albumin, aspartate transaminase, creatine kinase, lactate dehydrogenase, gamma glutamyltranspeptidase, alkaline phosphatase and alanine transaminase were determined in free-living white rhinoceroses Ceratotherium simum (n = 20). Single serum cortisol (n = 20), oestradiol-17 Beta (n = 14) and progesterone (n = 14) concentrations are also presented. Low serum sodium (129.6 +/- 4.2 mmol/l) chloride (94.2 +/- 3.05 mmol/l) and albumin (26.1 +/- 3.71 mmol/l) as well as high globulin (alpha 1, alpha 2, beta and gamma) concentrations were outstanding features. PMID- 3836305 TI - Simultaneous isolation of anaerobic bacteria from udder abscesses and mastitic milk in lactating dairy cows. AB - A variety of non-sporulating anaerobic bacterial species were isolated from udder abscesses in 10 lactating dairy cows. Fifty percent of the abscesses yielded multiple anaerobic species and the other 50% only 1 species. The anaerobic bacteria, however, were always accompanied by classical facultative anaerobic mastitogenic bacteria. In four of the five cows also afflicted with mastitis in the quarters with abscesses, the anaerobic and facultative anaerobic bacteria were identical. Peptococcus indolicus was the most commonly isolated organism followed by Eubacterium and Bacteroides spp. Bacteroides fragilis was resistant to penicillin, ampicillin and tetracycline. PMID- 3836306 TI - Ovine brucellosis: repeated vaccination with Rev 1 vaccine and the prevalence of the disease in the Winburg district. AB - The effect of repeated vaccination of ram lambs with Brucella melitensis Rev 1 vaccine was studied in relation to complement fixation titres. The presence of Brucella organisms in semen and changes in neutrophil densities of the semen were also studied. A survey of the incidence of ovine brucellosis in the Winburg district on the basis of a clinical examination of rams and the complement fixation test is also reported on. Repeated vaccination of ram lambs with Rev 1 vaccine resulted in high complement fixation titres for Brucella abortus in all cases and slight Brucella ovis titres in some cases. Neither Brucella organisms, nor increased numbers of neutrophils could be found in semen samples collected from the experimental animals. The incidence of ovine brucellosis in commercial and stud flocks in the Winburg district was in the order of 2%. As a fairly high incidence of brucellosis occurred in 2 stud Dohne merino flocks where ram lambs are vaccinated with Rev 1 at weaning, the administration thereof in this breed should take place at an earlier age. A second dosage at weaning should not have any disadvantageous effects. In order to protect newly vaccinated ram lambs from contracting brucellosis from older, infected cases, the separation of age groups is essential. The incidence of clinically detectable testicular lesions in rams from the Winburg district was in the order of 2%. PMID- 3836308 TI - Brain involvement in the chronic cardiac form of Chagas' disease. AB - A pathological systematized study of the brain in 31 cases of the chronic form of cardiac Chagas' disease was undertaken. In three cases (10%), granulomatous encephalitis in multiple non-systematized foci was observed. In one case, a recent active process was involved, with the presence of parasites. In two cases, it was suggested that lesions were reliquat of the acute phase, indicating a process becoming inactive, or already inactive. The type of brain infection in the chronic form of Chagas' disease is discussed as a consequence of interfering with the parasite-host relation (e.g., immunodepression) and favouring acute episodes. PMID- 3836307 TI - Hyperendemic West African trypanosomiasis in a rural hospital setting. AB - Over 60 cases of trypanosomiasis presented to Eku Hospital between May 1983 and May 1985. During this time, within this previously unreported hyperendemic focus, 47 patients were documented microscopically. Their clinical characteristics are reported here. Seventy-four per cent were felt to have CNS involvement on presentation. Compliance with the therapeutic regimen was a major problem, requiring adjustments in the usually accepted management of this disorder. PMID- 3836309 TI - An examination of the prepatent period and the absence of a crowding effect in Angiostrongylus cantonensis in laboratory rats. AB - The effects of the size of the infective inoculum on the prepatent period and the effect of crowding on body volume were examined in populations of Angiostrongylus cantonensis (Metastrongyloidea: Angiostrongylidae) in the laboratory rat. Groups of five rats were infected with 5, 10, 20 and 40 L3 of A. cantonensis, respectively. The prepatent period was determined by examination of faeces using a modified Baermann technique. The prepatent period ranged from 37 to 45 days and was best described by a negative logarithmic curve (y = 51.21 + x-3.838). Based on developmental data in the literature, it is suggested that 37 days represents the minimum prepatent period for A. cantonensis in this host. Worm population showed a significant, positive increase with inoculum size, yet there was no relationship between worm volume and population size in females and a slight, but significant, increase in worm volume and population size in males from rats necropsied 76-84 days post-infection. It is concluded that crowding is likely to have little effect on worm size in rats naturally infected with A. cantonensis. PMID- 3836310 TI - Anthrax in Lake Rukwa Valley, Tanzania: a persistent problem. AB - An epidemic of 239 human cases of anthrax is reported in the Rukwa Valley area of Tanzania. Although the infecting source was meat from animals dying of the disease, no intestinal cases occurred. Those infected were predominantly males between 15 and 35. The epidemic was seasonal, reaching a peak towards the end of the dry period when cattle were close grazing, and declining rapidly once the rains started and the grass began to grow. The increasing magnitude of annual epidemics suggests that the problem will get worse unless major efforts are made to vaccinate cattle before the epidemic period. PMID- 3836311 TI - Microflora in the trophic ulcers of the foot in leprosy. AB - Out of 25 cases of trophic ulcers of the foot, 10 (40%) were both aerobic and anaerobic, 14 (56%) only aerobic and one (4%) showed no growth of bacteria. With the exception of two cases (8%) in the aerobic group, all others showed mixed infections. A wide range of bacteria is reported. Topical application of gentamicin and chloramphenicol is recommended, based on the results of in vitro sensitivity. PMID- 3836312 TI - Frequencies of apolipoproteins E5 and E7 in apparently healthy Japanese. PMID- 3836313 TI - Genetic heterogeneity of histidinemia detected by screening newborn infants in Japan. PMID- 3836314 TI - A 14-year-old girl with Turner syndrome of complicated karyotype; 45,X/47,XY,+18, 19,+der(19),t(Y;19)(q12;p13.3). PMID- 3836315 TI - Repetition in schizophrenic speech. PMID- 3836316 TI - Morphophonology and lexical organization in deaf readers. PMID- 3836317 TI - The generalization hypothesis: final consonant deletion. PMID- 3836318 TI - Production of syntactic stress in alaryngeal speech. PMID- 3836319 TI - Exposure to the modern health service system as a predictor of the duration of breastfeeding: a cross-cultural study. PMID- 3836320 TI - Biological and behavioral predictors of exclusive breastfeeding duration. PMID- 3836321 TI - The effect of the WIC program on nutrient intake of infants, 1984. PMID- 3836323 TI - Biocultural factors affecting infant feeding and growth. PMID- 3836322 TI - The influence of infant feeding patterns on growth of children in American Samoa. PMID- 3836324 TI - Research on determinants of breastfeeding duration: suggestions for biocultural studies. PMID- 3836325 TI - Lymph node cell responsiveness in BALB/c mice infected with Leishmania mexicana. AB - In the present study we measured the blastogenic response of lymph node cells from BALB/c mice infected with Leishmania mexicana throughout the course of infection. Results showed that infected mice displayed normal blastogenic responses in the lymph nodes until twenty weeks of infection. Thereafter, there was a gradual suppression. Comparison of the immunoresponsiveness in the spleen and lymph nodes, revealed normal responses in the lymph nodes several weeks after suppression in the spleen had occurred. Suppression of blastogenic responses in the lymph nodes was related to an adherent macrophage-like cell which actively suppressed normal proliferative responses to mitogens. PMID- 3836327 TI - Competitive interactions between species of fresh-water snails. I. Laboratory. IC. Comparative survival of Biomphalaria glabrata and B. straminea kept out of water. AB - Biomphalaria glabrata and B. straminea were submitted to an out-door laboratory experiment for testing their comparative ability to resist desiccation. Results have shown that B. straminea is significantly higher resistant than B. glabrata. After five months under such distressing condition the survival ratios were: B. glabrata 8.1 per cent and B. straminea 18.4 per cent. PMID- 3836326 TI - [Trypanosoma rangeli Tejera, 1920. VIII. Response to reinfections in 2 mammals]. AB - Under experimental conditions, the course of the infection and the response to the reinfection by Trypanosoma rangeli in mice and Didelphis marsupialis, are studied. During the initial infection the mice show a relatively low parasitaemia and a short patent period. A scanty parasitaemia level of four days length, was observed following the first reinfection, being the mice resistant to new reinfections by T. rangeli. In opossums a lower parasitaemia and a longer patent period than that detected in mice, were observed during the initial infection. The response to reinfections in this mammal, was similar to that observed in mice. After reinfection with T. rangeli, haemagglutinant antibodies in immune sera of both mice and opossums, were detected. The possible immune-response at the site of deposition against the metacyclic-forms of T. rangeli, and the action of circulating antibodies against the blood forms of the parasite, are speculated to explain the resistance of mice and opossums to the reinfection by T. rangeli. PMID- 3836328 TI - [Establishment of a colony, in laboratory, of Lutzomyia intermedia Lutz & Neiva, 1912 (Diptera, Psychodidae, Phlebotominae)]. AB - A laboratory colony of the sandfly Lutzomyia intermedia was established (at present in its seventh generation) in order to provide specimens for experimental infection and for experimental xenodiagnosis of natural infections due to cutaneous leishmanias in Rio de Janeiro. Date are presented on the methodology and on the yield and duration of each stage of development, during the first four generations. PMID- 3836329 TI - [Ectoparasites of rodents of the urban region of Belo Horizonte, MG. II. Variations of the infestation indices in Rattus norvegicus norvegicus]. AB - The indices of infestation by the mites Echinolaelaps echidninus and Laelaps nuttalli, the louse Popyplax spinulosa and the flea Xenopsylla cheopis, obtained monthly, from June 1980 to September 1982, on Rattus norvegicus norvegicus in the city of Belo Horizonte, Minas Gerais state, Brazil were related to seasonal period, sex of the host and area of capture. Mites and insects showed different behaviour in relation to these factors. Only the fleas and lice exhibit significant association between the rodents' infestation and the seasonal period, or between the infestation and the rodents' sex or else a variation of the distribution by the three main areas of capture. The fleas showed the highest indices of infestation in the warm-rainy season (October to March) while the infestation by the lice was more prevalent in the dry-cool season. The climatic factors most related with the hosts' infestation were, in decreasing order, rainfall, temperature and relative humidity. Fleas and lice preferentially infested male rodents, being infestation by X. cheopis highly significant. PMID- 3836330 TI - [Angiostrongylus vasorum (Baillet, 1866) Nematoda: Protostrongylidae, in dogs of Minas Gerais, Brazil]. AB - For the first time Angiostrongylus vasorum in Canis familiaris in Minas Gerais State, Brazil, is described. The description and measurements of three males and ten females are presented together with a diagram of the parasite. PMID- 3836331 TI - [Physical and chemical characteristics of the habitat of Biomphalaria tenagophila (Mollusca, Planorbidae)]. AB - Samples of water and snails collected through aleatory scoops in a small dam were done to obtain data concerning the physical and chemical characteristics of the water and their possible influence on biological aspects of the life cycle of snails. Among the 17 analysed parameters, Alkalinity and Conductivity showed a positive correlation with the density of B. tenagophila (r = +0.224 and r = +0.290), while CO2 and Acidity were negatively correlated with this populacional parameter (r = -0.592 and 0.601). Alkalinity and Total Hardness values were slightly higher than 100 mg/l CaCO3. Chlorides and Conductivity showed means of 94.9 +/- 38.7 and 680.1 +/- 643 microS/cm; these values are very high for that region. Other factors like pH and OD are according to the pattern for provision untreated waters. The density of B. tenagophila declined in the 6th month after a long period of torrential rains and in the rainy summers. In the colder months of the following year the density was higher (until 124 individuals/months/90 scoops). The monthly mean of the diameters of the snails was always larger than 13 mm, reaching 21.4 +/- 4.1 mm, but the mode was about 17 mm. There was no correlation between diameter/density (r = 0.037) and density/temperature (r = 0.065). PMID- 3836333 TI - Liquid nitrogen cryopreservation of Paracoccidioides brasiliensis in Fava's Netto medium. PMID- 3836332 TI - [Morphological and functional characterization of adherent splenic cells of mice]. AB - The separation, characterization and functional assay of the inflammatory infiltrate present in the site of the lesion has been useful in the study of many diseases. Histochemical techniques for esterase and acid phosphatase, as well as the Phagocytose test and the Giemsa staining were applied to the study of the spleen-cell population of ten mice. A good characterization of the components of the Phagocytic Mononuclear System and the identification and quantification of the total cell population were obtained. PMID- 3836334 TI - Transport of immunoglobulin G by endothelial vesicles in isolated capillaries. AB - The ability of capillary endothelial vesicles to transport immunoglobulin G (IgG) across the capillary wall was investigated. Isolated capillary endothelial cells were found to endocytose fluorescent-labeled IgG via a bulk fluid-phase mechanism. When placed in marker-free medium the cells released all previously ingested label. Cationization of IgG causes greater amounts of the protein to be ingested as compared to normal IgG. Cationized IgG is probably endocytosed via an adsorptive mechanism, allowing greater efficiency in its uptake. It is concluded that IgG can be transcytosed by isolated endothelial cells of capillary origin and that the charge of the IgG molecule is important in determining its mode of uptake. PMID- 3836335 TI - Effects of dopamine and vasopressin on histamine-induced increases in macromolecular permeability in the canine forelimb. AB - Local intra-arterial infusions of histamine, 16 micrograms base/min, for 60 minutes produced increases in lymph flow, lymph total protein concentration, the lymph/plasma total protein ratio, and weight in canine forelimbs perfused at constant flow. The weight gains were far greater than can be accounted for by an increase in vascular volume, and must, therefore, be attributed to edema formation. Treatment with dopamine (2, 4, or 8 micrograms base/min) or arginine vasopressin (AVP) initially produced an increase in perfusion pressure reflecting constriction of the forelimb vasculature. AVP prevented the histamine-induced increase in lymph flow, lymph total protein concentration, the L/P total protein ratio, and weight gain. In contrast, treatment with DA at three different dose levels failed to affect the histamine response. The increases in lymph flow, lymph total protein concentration, lymph/plasma total protein ratio, and weight were comparable to that produced by histamine in the absence of DA. These data fail to provide evidence for DA mediated regulation of macromolecular permeability, and suggest that endothelial cells either do not contain DA receptors, or that their activation does not affect macromolecular permeability. PMID- 3836336 TI - Evidence for constriction of canine prenodal lymphatic vessels by vasoactive agents and carotid occlusion. AB - We measured pressure in a prenodal lymphatic in the canine forelimb during constant flow pump-perfusion of the brachial artery. We made bolus i.a. injections of 1.0 micrograms angiotensin II, norepinephrine, bombesin, or bradykinin, 20 micrograms 5-hydroxytryptamine (5HT), or occluded the carotid arteries. Norepinephrine, 5HT, or carotid occlusion produced regular rises in forelimb perfusion pressure and in lymphatic pressure. Angiotensin II increased forelimb arterial pressures but increased lymphatic pressure in only four experiments. Bombesin increased artery pressures but did not affect lymphatic pressure. Small vein pressure was increased by carotid occlusion, 5HT and norepinephrine. Increases in lymphatic pressure were coincident with increases in vein pressure but no related in magnitude. Bradykinin decreased forelimb arterial and venous pressures but did not affect lymphatic pressure. Either active constriction of lymphatic vessels or passive compression by movements of adjacent blood vessels could increase lymphatic pressure. These data do not preclude a passive component of pressure rise in the lymphatics nor do they support the concept. We conclude that active constriction of prenodal lymphatic vessels in the dog forelimb can occur in response to circulating vasoactive agents and bilateral carotid occlusion. PMID- 3836337 TI - The effects of myocardial ischemia followed by reperfusion on perfused coronary capillarity. AB - To determine the effects of ischemia and reperfusion on myocardial perfused capillary density, rat hearts were excised, kept ischemic for thirty minutes then reperfused with blood from a support animal. Control hearts were isolated and perfused for either 10 or 60 minutes before injection of a vascular marker (Monastral Blue-blood mixture, 30 sec at 100 mmHg). The ischemic hearts were perfused with Blue after 10 minutes of reperfusion. The perfused capillary density (theta) and capillary/fiber ratio (C/F) were measured from frozen transverse sections of the left ventricle. For 10- and 60-minute control hearts, the epicardial theta values were 2324 +/- 476 caps/mm2 and 2378 +/- 330 SD. The endo/epi theta ratio was not significantly less than unity for either control group. For the ischemic group, theta was significantly decreased both in the epicardium (707 +/- 515 caps/mm2) and endocardium (130 +/- 30 caps/mm2) (p less than 0.05). The endo/epi theta ratio was significantly less than unity for the ischemic group (P less than 0.05). The C/F ratio analysis yielded the same results. The decrease in both theta and CF ratio indicate that 30 minutes of ischemia followed by 10 minutes of reperfusion caused a marked "No-reflow" phenomena in isolated, supported hearts. The No-reflow was most pronounced in the endocardium. PMID- 3836338 TI - Transcytosis of ferritin and increased production of subendothelial matrix components by aortic endothelial cells during the development of hypertension. AB - The aortic intima of the Spontaneously Hypertensive Rat underwent dramatic structural alterations with respect to the subendothelial space coincident with the rise in arterial pressure. This space became increasingly widened from four to 24 weeks, and exhibited a dense accumulation of granular material, resembling a complex reticular basement membrane. To determine if this alteration was due to an abnormality in endothelial transcytosis, rats of four, ten and 24 weeks of age were studied using ferritin as a tracer. In the SHR, vesicular transport of injected ferritin was significantly increased at all ages studied compared to the WKY, but decreased to prehypertensive levels by 24 weeks of age. This occurred without a change in the density of vesicles and caveolae within the cells. Despite the decrease in transcytosis from 10 to 24 weeks the alterations of the subendothelial space continued indicating that the endothelium may play a role in the synthesis and deposition of the dense extracellular matrix. PMID- 3836339 TI - Chemical blockade of the reticuloendothelial system results in arteriolar spasms: possible role of endothelial cells. AB - Scattered qualitative studies in the literature suggest that the reticuloendothelial system (RES) interacts with the microcirculation to effect host defense and that chemical or pharmacologic blockade of the RES might compromise the microcirculation. With this possibility in mind, we designed experiments in rats to determine whether colloid and pharmacologic blockade of the RES could alter microvascular tone and reactivity. The effects of colloidal carbon, thorium dioxide, tripalmitin and tetracycline on reticuloendothelial system phagocytic function, mesenteric terminal arteriolar tone and arteriolar reactivity to noradrenaline and acetylcholine were examined in situ at magnifications up to 5000x. Colloidal carbon and thorium dioxide, in the doses utilized, produced complete blockade of the RES. Treatment with tripalmitin and tetracycline produced pronounced RES depression. RES blockade and depression were associated with marked reductions in terminal arteriolar lumen sizes, curtailment of capillary inflow and outflow, hyper-reactivity to the constrictor, noradrenaline, and hypo-reactivity to the dilator, acetylcholine. Close examination of the endothelial linings of the capillaries, postcapillary venules and terminal arterioles of the experimentally-treated animals indicated pronounced uptake of carbon particles in the endothelial cells, different degrees of endothelial cell swelling and often bulging into the microvessel lumens. Our findings suggest that RES-induced alterations in microvascular tone and arteriolar reactivity may be related to injury of the microvascular endothelial cells. PMID- 3836340 TI - Arterial, venous and lymphatic pathways in dorsal mucosa of dog tongue (implicated routes for metastatic lesions). AB - Because metastatic lesions of the tongue are known to spread primarily via lymphatics and secondarily via veins, it would seem likely that knowledge of their distribution would be essential to clinico-pathologic interpretation. Although there is unaminity of opinion regarding lymphatic afferent pathways from the tongue to regional lymph nodes, unanimity of opinion is lacking regarding distribution of lymphatics and veins in the dorsal mucosa. Pivotal questions are: Do lymph vessels in the dorsal lingual mucosa extend across lines of fusion of embryonic lingual processes (lingual raphe and sulcus terminalis)? Do anterior and posterior portions of the tongue drain separately? To resolve these problems and to clearly delineate arteries, veins and lymphatics, each vessel type was perfused with a different colored perfusate. Imaging techniques provided by perfusion methods demonstrated precisely that the lymphatic network extends uniformly throughout the mucosa from tip to base crossing the sulcus terminalis in route and from border to border crossing the median lingual raphe. Mucosal veins are peltate in form anteriorly, but are pennate in form forward to the vallate papillae. The distribution characteristics of these vessel types provides opportunities for multidirectional spread of metastatic lesions. Because spread via both routes is rapid and multidirectional, it becomes clear that chemotherapy and radiotherapy may be preferable to surgery. The latter is frequently mutilating and sometimes the patient is left without capabilities of phonation and deglutition. Furthermore, radical surgical procedures do not provide assurance that the patient has been entirely separated from the malignancy. PMID- 3836341 TI - Whole-blood filtration at different filtration pressures: evaluation in normals and diabetics. AB - Using the Reid technique we evaluated the blood cellular volume (VBC-ml/min-) obtained by changing filtration negative pressure. From the obtained data it is evident that at the three different pressures (20, 15 and 10 cm of H2O) the VBC does not distinguish normals from diabetics. Only at the negative pressure of 20 cm of water did the VBC distinguish diabetics who were subdivided for type and for vascular complications. We also evaluated the relationship between the values of VBC calculated at the pressure of 20 and 10 cm of water. From this study it emerges that the relationship between the two values present in normals is not different from that present in diabetics and in diabetics subdivided for type and vascular complications. The causes of these findings have been examined in detail. PMID- 3836343 TI - Control of transcapillary water movement by vasoactive agents. AB - Experiments were performed to demonstrate that papaverine can increase capillary filtration coefficient, CFC, and to investigate whether this increase could be reversed by isoproterenol, norepinephrine and plasma. The study used the isolated cat hindlimb, perfused at constant flow with a recirculated blood-albumin solution. It was observed that papaverine increased CFC in a dose-dependent manner, and that this effect could be reversed by isoproterenol and norepinephrine. Norepinephrine reduced CFC even in the presence of phentolamine. Plasma, previously shown to reduce CFC when papaverine was present, was shown to have no such effect when papaverine was absent. It is argued that the CFC changes are best explained by changes in the hydraulic conductivity of the exchange vessels, rather than through changes in the perfused surface area, and that the CFC changes are similar to the permeability changes caused by inflammatory mediators and catecholamines observed by others. PMID- 3836342 TI - Effect of diabetes on microvascular responses in mouse mesentery. AB - Mice 8 weeks old were made diabetic with streptozotocin. Their mesenteric arterioles were studied 4-8 weeks later and their responses compared with those of arterioles in control mice. The responses to the dilators acetylcholine and papaverine and to the constrictor prostaglandin F2 alpha were identical in diabetics and controls whether the changes in diameter were expressed as a percent of baseline diameter or in absolute units (microns). Diabetics had significantly smaller responses than controls, to the constrictors norepinephrine and serotonin. However the effect of diabetes on the response to norepinephrine may have been a spurious consequence of expressing constrictions as a percent of slightly differing resting diameters, since the difference became statistically insignificant when constrictions were expressed in absolute units as microns. The reduced response to serotonin remained significant no matter how constriction was expressed. This result, together with a similar finding in an earlier study of diabetes which used much smaller cerebral vessels, suggests that reduced vascular responses to serotonin may be associated with streptozotocin diabetes of relatively recent onset in mice. The reason for this relatively selective impairment of vasomotor response remains obscure, as does the reason for the spared responses to the other vasoactive agents we tested. PMID- 3836344 TI - Studies of lymph modification by lymph nodes. AB - This paper will focus on physiological evidence for a lymph node concentrating diluting mechanism. The mechanism is based on the finding that the protein concentration of efferent lymph leaving the node will change in the direction required to establish equilibrium of the Starling forces acting across the blood lymph barrier of the lymph node. Therefore, the lymph proteins may become concentrated or diluted during nodal transit, depending on the direction of net fluid transfer between the lymph and blood vascular compartments; if the Starling forces are balanced perfectly, the lymph will not be altered. PMID- 3836345 TI - Hepatic microvascular regulatory mechanisms. VI. Effects of lodoxamide tromethamine or phentolamine-HCl on early hemodynamic and glucoregulatory alterations evoked by endotoxin. AB - Initial changes in hepatic microvasculature and systemic arterial blood pressure were measured in non-fasted and anesthetized Sprague-Dawley rats receiving an i.v. infusion, or a topical application to the surface of the liver, of endotoxin (S. typhimurium) and/or phentolamine or lodoxamide. Circulating blood glucose and hepatic glycogen content were determined in infused rats. Injection of 10 mg per kg b.w. endotoxin, or topical administration of 10 micrograms endotoxin and/or antagonists, elicited no change in carotid (arterial) blood pressure. Infusion was accompanied by an elevation in blood glucose within 15 min and a decrease in hepatic glycogen content by 35 min. Injection of 1.0 mg per kg b.w. phentolamine blocked the endotoxin-induced hyperglycemia without affecting hepatic glycogenolysis. However, the alpha-adrenergic antagonist by itself provoked systemic hypotension, mild hypoglycemia, and hepatic glycogen depletion within 35 min. In vivo microscopy revealed that 10 micrograms endotoxin evoked immediate constriction of portal venules and periportal sinusoids. Vasoconstriction was accompanied by an increase in the percentage of microvascular segments containing decreased cellular blood flow velocity. These responses were blocked by 0.1 microgram lodoxamide but not by 100 micrograms phentolamine. The lodoxamide induced inhibition was reversed by reapplication of 10 micrograms endotoxin 15 min following blockade. Given these results, it is suggested that (a) microvascular responses elicited by endotoxin were mediated by released constituents from intrahepatic mast cells and not by activation of alpha adrenergic receptors, and (b) phentolamine blocked endotoxin-induced initial hyperglycemia by virtue of its hypoglycemic, glycogenolytic and/or hypotensive effects. PMID- 3836346 TI - Local skeletal muscle surface oxygen pressure fields after high-energy trauma. AB - In the assessment of viability of traumatized muscle tissue clinical signs, including colour, consistency, capillary bleeding and contractility have been commonly used. One of these signs, discolouration, has been shown in earlier studies to be associated with impaired circulation and severe and irreversible changes of muscle electrolytes and energy metabolism. In this study the circulation and tissue oxygen pressure fields were studied on either side of the "demarcation line" between discoloured and normally coloured areas of traumatized muscle tissue. Anaesthetized pigs were injured in one thigh with a high velocity spherical steel missile. The microcirculatory flow of the traumatized muscle was studied by measuring the clearance of 133Xenon from the surface of the muscle and tissue oxygen pressure (PtO2) was measured with an MDO electrode. Measurements were done before and 1, 3 and 5 hours after the trauma. A markedly decreased or absent flow as well as very low PtO2 values were found within areas of discolouration. In the adjacent normally coloured areas no such changes were noted and the values of these areas resembled those of the contralateral untraumatized leg. The results agree with those of earlier studies of circulation and metabolic changes indicating that discolouration is a useful sign in the clinical assessment of muscle viability after high-energy trauma. PMID- 3836347 TI - On criteria determining the extension of microvascular beds with particular reference to cerebral cortex. AB - Proceeding from the results of work in the field of microcirculation, the author proposes two criteria to determine the limits of microvascular beds. The first is the functional behavior of the arterial branching sequence under natural conditions, and the other is the specific red cell behavior inside the transient arterial and venous branchings. Proceeding from these criteria the limits of the microvascular bed for the rabbit cerebral cortex were found to be at the arterial branches of approximately 100 microns in diameter. But, it is still unknown whether this is a common regularity for all regions of the body. PMID- 3836348 TI - The relationship between subcutaneous tissue pressures and intramuscular pressures in normal and edematous legs. AB - The interstitial hydrostatic pressure is affecting fluid movements at microvascular level. A disturbance in the Starling equilibrium results in edema formation. The effect of venous outflow and lymphatic obstructions in human, on the interstitial fluid pressures subcutaneously and intramuscularly and the possible interaction between veins and lymphatics was studied. Utilizing a slit catheter technique, subcutaneous tissue and intramuscular pressures were measured bilaterally in 10 patients with venous outflow obstruction and in 10 patients with lymphatic obstruction. In lymphatic obstruction the subcutaneous tissue pressure was significantly elevated as well as the intramuscular pressure, while in venous obstruction the subcutaneous tissue pressure was normal. The intramuscular pressure was significantly elevated during exercise reaching 60 mm Hg or more, combined with severe pain. Pain did not occur in patients with lymphatic obstruction. This study suggests that in lymphatic obstruction there is also an involvement of either deep lymphatics, venous dysfunction or a combination of both. Intramuscular pressures do not reach the critical level for pain during exercise. In venous obstruction mainly the intramuscular compartment is involved and interstitial pressure reaches values well above 60 mm Hg during exercise, at which level pain occurs, possibly due to tension of painreceptors in the muscle fascias. PMID- 3836349 TI - The effect of hydrostatic gradient on solvent drag reflection coefficient in heteroporous membranes: differences between model-dependent and model-independent computations. AB - The accepted reason for apparent increase in solvent drag reflection coefficient (sigma f) with mean hydrostatic pressure gradient (delta p) across a heteroporous membrane is thought to be twofold. First, fractional volume flux traversing small pores (F) is thought to rise as delta p rises. Second, since it is believed that sigma f is directly related to F, then sigma f should rise with delta p to an asymptote. The first feature of a rise in F with delta p to an asymptote was shown to be true for two published two pore models. However, sigma f was closely correlated with F only if sigma f was computed from summation of known components of flux across each pore. If sigma f was computed by a model independent, purely thermodynamic method, then sigma f was not closely tied to F, and approached its asymptote at considerably lower values of delta p than the summation form of sigma f. It is concluded that although F rises with delta p above critical values of delta p, this alone cannot be the cause of a rising sigma f computed by model independent methods. Another explanation, such as anatomic change is required. In addition, model independent methods for computation of sigma f require fewer assumptions, less information and lower pressures than model dependent methods. PMID- 3836350 TI - Blockade of histamine receptors and thrombin-induced microembolic pulmonary edema in the rat. AB - Pulmonary edema was induced by an intravenous infusion of bovine thrombin, 500 NIH/kg b.w., given in 5 min, in rats in which fibrinolysis had been inhibited by an intraperitoneal injection of the fibrinolysis inhibitor AMCA. Ninety minutes after termination of the thrombin infusion the lung weight was increased from 1.09 +/- 0.07 to 3.14 +/- 0.12 g due to edema. A high albumin concentration in the extravascular water indicated that the edema was a consequence of increased permeability in the microcirculation. In rats injected with the H1 histamine receptor antagonist mepyramine maleate and H2 receptor antagonist cimetidine after the thrombin infusion, the lung weight was significantly lower at 90 min (2.68 +/- 0.33 g), and the amount of edema as calculated morphometrically was slightly but significantly reduced. The concentration of albumin in the extravascular water (i.e. in the edema fluid) in rats subjected to histamine receptor blockade was unchanged, indicating that the slight decrease in edema was a result of decreased filtration pressure and not of an effect on microvascular permeability. PMID- 3836351 TI - Changes in postglomerular hemodynamics alters the composition of canine renal lymph. AB - Renal lymph was collected from either capsular or hilar lymphatic vessels in anesthetized dogs. Collections were made during control periods and during two levels of elevated renal vein pressure. Increases in renal vein pressure resulted in increased lymph flow and decreases in capsular lymph protein, creatinine and PAH concentrations relative to those of concurrently collected arterial blood plasma. Although hilar lymph flow increased in response to elevated renal vein pressure, only the lymph creatinine concentration was decreased. It was concluded that peritubular capillary filtration may not be a major factor in determining renal lymph composition. In addition, it appears that the steady-state protein and PAH concentrations in the interstitial fluid of the outer cortex are more sensitive to solute washout during increased renal vein pressure than those of the inner cortex and outer medulla. PMID- 3836352 TI - Perturbation of lymphatic endothelial cells in experimental Brugia malayi infections. AB - Infection with filarial nematodes induces lymphatic dysfunction in many individuals in endemic areas. The present morphometric study describes changes in lymphatic endothelial cells of Brugia-infected cats. Transmission electron microscopy revealed a decrease in the number of cytoplasmic vesicles in endothelial cells from lymphatic vessels harboring filarial nematodes (4.9 vesicles per micron 2 cytoplasm) when compared with similar cells from the contralateral uninfected control vessels (9.0 vesicles per micron 2). The size of the vesicles and their location within the cytoplasm was not changed. Irregular large vacuoles, often containing degenerating organelles, were common in endothelial cells lining Brugia-infected lymphatic vessels. These studies suggest that damage of cells by living or dead worms or worm products may have a direct effect on the endothelial lining of lymphatic vessels. This may compromise the efficiency of vessels that collect and transport edematous fluid in affected limbs. PMID- 3836353 TI - Glomerular morphometry in the Munich-Wistar rat. AB - Physiological studies of glomerular function in the rat have been much advanced by the accessibility of superficial glomeruli for micropuncture in a mutant strain, the Munich Wistar (MW) rat. An important parameter studied in this way is the glomerular ultrafiltration coefficient, or Kf. Kf is the product of hydraulic permeability and of the effective filtration surface area. Confounding factors are the variation in anatomical glomerular filtration surface in the rat with body weight (BW) and with the anatomical position of the glomerulus. To establish appropriate anatomical values for the interpretation of Kf in the MW rat, we have carried out a morphometric study by electron microscopy of two groups of relatively mature male MW rats, of approximately 200 g and approximately 300 g BW respectively. We find that superficial cortical (SC) and midcortical (MC) glomeruli of MW rats of approximately 200 g BW have relatively low glomerular volumes and anatomical filtration surface areas, but that MW rats of approximately 300 g BW have larger SC and MC glomeruli of similar size to juxtamedullary (JM) glomeruli, and anatomical filtration surface areas comparable to values usually assumed in physiological studies. We ascribe this contrast between SC glomeruli of MW rats of approximately 200 g and approximately 300 g BW respectively to the maturation of SC glomeruli. PMID- 3836355 TI - The law as a behavioral instrument. PMID- 3836354 TI - A comparison of micro- and macrocirculation of the isolated rat mesentery preparation. AB - To allow a comparison of microcirculatory perfusion and whole organ blood flow, pressure-flow curves were established in the isolated rat mesentery preparation at two different hematocrit values (5%; 35 +/- 4%). Besides whole organ volume flow, red blood cell (RBC) flow velocity in capillaries of the mesentery membrane, and RBC-flux in fat tissue along the mesentery arteries as well as in small intestine were simultaneously measured. The arterio-venous pressure difference over the tissue was varied from 20-100 mmHg (2.7-13.3 kPa). It could be shown, that the pressure-flow curves in the mesentery membrane as well as in fat demonstrate autoregulation over a pressure range of 30-70 mmHg (4-9.3 kPa), whereas flow through the small intestine and whole organ responded passively to pressure changes. At constant pressure differences an increase in hematocrit value from about 5% to 35 +/- 4% reduced whole organ blood flow as well as flow velocity in capillaries of the mesentery membrane by 50% over the pressure range applied. It is concluded that in a heterogeneous tissue like the isolated rat mesentery preparation the pressure-flow-relationship in tissue components with a low flow fraction might be disparate from that of the whole organ volume flow. Furthermore, despite differences in the pressure flow relationship for the whole and microcirculation, a changed blood viscosity can be quantified in both circulations. PMID- 3836356 TI - A user theory of legal change as applied to gender. PMID- 3836357 TI - Empirical assessment and civil actions. PMID- 3836358 TI - The law as an instrument of socialization and social structure. PMID- 3836359 TI - Psychology, determinism, and legal responsibility. PMID- 3836360 TI - Deterrence theory and research. PMID- 3836361 TI - [Schizophreniform psychoses in patients with epilepsy]. PMID- 3836362 TI - ["Ragged red" muscular fibers in 2 patients with neuromuscular diseases]. PMID- 3836363 TI - [Pregnancy and prenatal development in epilepsy]. PMID- 3836364 TI - [The present state and further development of neurological sciences in Croatia and Yugoslavia]. PMID- 3836365 TI - [Clinical, pathologic and HLA antigen markers of heterogeneity associated with myasthenia gravis]. PMID- 3836366 TI - [The effect of vascular lesions of the central nervous system on the function of the urinary bladder]. PMID- 3836367 TI - [Electroencephalographic changes in cranial injuries in alcoholics]. PMID- 3836368 TI - Epidemiologic studies of multiple sclerosis in Yugoslavia. PMID- 3836369 TI - [Epidemiologic study of multiple sclerosis in the Sumadija and Pomoravlje region]. PMID- 3836371 TI - [Comparison of two different preanesthetic technics. Controlled clinical experiment]. PMID- 3836370 TI - [Rorschach analysis of chronic pain and fear of death]. PMID- 3836372 TI - [Prevention of post-spinal headache in general surgery, obstetrics and gynecology]. PMID- 3836373 TI - [Rhabdomyolysis in general anesthesia: clinical contribution]. PMID- 3836374 TI - [Clinical evaluation of recovery from anesthesia with halogenated drugs. Comparison of halothane, enflurane and isoflurane]. PMID- 3836375 TI - [Analgesic subarachnoid block with fentanyl for aortography in geriatrics]. PMID- 3836376 TI - [Reye's syndrome in resuscitation]. PMID- 3836377 TI - [Contribution of hemodynamic monitoring and oxygen transport in the treatment of a case of acute pancreatitis]. PMID- 3836378 TI - [Use of fiberoptic bronchoscopy in intensive care]. PMID- 3836379 TI - [Use of differentiated lung ventilation (IVL) in a case of severe unilateral thoracic injury]. PMID- 3836380 TI - [Epidural buprenorphine versus morphine in bone cancer pain]. PMID- 3836381 TI - [Technical description of a useful integrated approach in the prevention of aspiration pneumonia in emergency situations]. PMID- 3836382 TI - [Immunomorphological aspects of intercapillary glomerulosclerosis in diabetes mellitus]. PMID- 3836383 TI - [Pleomorphic lipoma]. PMID- 3836384 TI - Texture discrimination does not occur at the cyclopean retina. AB - The ability to segregate texture patterns at the cyclopean retina was tested with random-dot stereograms. When fused, patterns displayed arrays of texture elements which varied either in their form or in apparent depth. If elements of different form appeared at similar disparity in the random-dot stereograms, they did not provide the visual impression of distinct texture areas, although individually they could be easily discriminated. When texture elements differed in apparent depth rather than in form, segregation of different areas was readily achieved. These results restrict the possible site in the visual system for texture discrimination. PMID- 3836385 TI - Discrimination of higher-order textures. AB - Arrays of figural elements differing in certain features ('textons') may be visually segregated to yield the impression of a global figure of different texture. This fact was used to construct texture patterns of a higher level of complexity. In microstructure, these patterns reveal regular arrays of distinguishable figural elements, the segregation of which can be predicted from previous studies of human texture sensitivity. In macrostructure, clusters of such elements form new figural elements which, when repeated over space, themselves give the impression of texture at a perceptually higher level. Discrimination of such macrostructure textures was found to place similar restrictions on the form of figural elements as those of texture discrimination at the microstructure level. PMID- 3836386 TI - Perception of Glass pattern structure with stereopsis. AB - Stereograms are presented which demonstrate that the perceptual salience of structure in Glass patterns may be destroyed or created by the introduction of stereoscopic depth effects. Novel three-dimensional pattern structures can also be produced. Proposals concerning the nature of the primal sketch are evaluated in the light of these findings, and it is concluded that the findings are consistent with the view that depth derived from disparity information is explicitly represented in the primal sketch. PMID- 3836387 TI - Visual effects with a miniature Leonardo's window: photographs and real scenes fused stereoscopically. AB - The drawing on a conventional Leonardo's window will be seen by both of an observer's eyes unless one of them is occluded. But, by substituting a photographic colour transparency (in a suitably compact viewer) for the drawing, one eye can view the transparency whilst the other eye gains an unobstructed direct view of the scene. The transparency can then be stereoscopically fused with the directly-viewed scene. As the perspective of the transparency depends not on the observer's viewpoint but only on the position of the camera at the time of photography, altering the viewpoint causes the effective eye-base to vary, thus enhancing, suppressing, or sometimes even reversing the stereoscopic depth. With very simple equipment several visual effects can easily be demonstrated. Practical applications of the technique have been found, particularly in those engineering and geological situations in which it is useful to detect changes since a photograph was taken. PMID- 3836388 TI - Tactual perception of embossed Morse code and braille: the alliance of vision and touch. AB - In three experiments observers made visual matches to tangible embossed patterns. Stained glass was used to blur vision and thus allow the effect of visual guidance of tactual exploration on the accuracy of symbol recognition to be evaluated. Stained glass rendered the embossed code invisible, but allowed sight of the hand. In the first experiment subjects identified patterns made up of dots and dashes drawn from Morse code; in the second and third experiments they studied braille. The results show that subjects are more accurate in 'reading' tangible codes when provided with visual guidance. Performance was higher for braille than for Morse code. Vision aided touch through the provision of a frame of reference and through sight of scanning movements. Naive sighted observers were able to identify invisible braille dots by watching other individuals touch the symbols, suggesting the importance of vision of kinesthetic patterns. PMID- 3836389 TI - Signal intensity, task context, and auditory-visual interactions. AB - A study is reported of the effect of signal intensity on immediate cross-modal bias between vision and audition. Each signal was presented at high or low intensity, giving rise to four conditions. The study also dealt with the effectiveness of instructions and task context in directing attention. Two kinds of task (pointing) contexts were compared: a constant or unimodal context in which the modality of the target signal was the same throughout a session, and a bimodal one in which it changed from trial to trial. In both conditions subjects were instructed that the signals might come from the same or from different positions, depending on the trial. For visual bias of audition the results show that a signal with high intensity was more biasing and less biased than one with low intensity. Auditory bias of vision did not reach significance in any of the four intensity conditions. Type of task context had no effect on the extent of bias, suggesting that a constant-task (unimodal) context was no more effective in directing attention than instructions alone. PMID- 3836390 TI - Revisitation of the family tie between Munsterberg and Taylor-Woodhouse illusions. AB - Some observations suggest that, contrary to Taylor and Woodhouse's assumption, a strong relationship exists between the Taylor-Woodhouse and Munsterberg distortion illusions. An attempt is made to show that each of the major explanations put forward to account for the occurrence of the Munsterberg effect suits the Taylor-Woodhouse one as well. PMID- 3836392 TI - How faces differ--a new comparative technique. AB - It can be argued that the process of recognizing faces progresses in two stages: first, the realisation that a perceived image contains patterns that may most reasonably be interpreted as forming a discrete face; second, correct and positive identification by noting the particular features that differentiate one face from all others. A novel technique which explored the latter process in the particular case of four different (male) faces is described. The experiment took the form of a four-alternatives forced-choice presentation of faces behind masks which contained a number of randomly positioned apertures. The percentage of correct responses for each separate aperture was then computed after a large number of 1 s presentations to four observers. This novel form of experiment suggested an equally novel form of pictorial data presentation that, literally, highlights the salient features of each individual face and thereby allows detailed intercomparison merely by inspection. Summing over all targets and observers reveals a strong preference for eyes and eyebrows, followed closely by the hairline above the temples. Next in order of preference comes the mouth and upper-lip area, followed by the lateral hairline beside each temple. Individual differences are strong, however, and the variations are such as to suggest that the uncritical application of generalised feature saliency lists is neither useful nor appropriate. PMID- 3836391 TI - Haploscopic colour mixtures with and without contours in subjects with normal and disturbed binocular vision. AB - Binocular mixtures of equiluminous components of different wavelengths were matched with additive monoptic mixtures of the same components. After a satisfactory match had been achieved, the luminance of each colour in the monoptic mixture was measured photometrically. After presentation of an orthogonal grating superimposed on the colour shown to one eye, the colour matching was repeated. The grating induced a strong dominance of the colour with which it was combined. Yet the uncontoured colour was not entirely suppressed, but contributed to the binocular colour to various degrees. In three subjects with anisometropic amblyopia in one eye the colour presented to the amblyopic eye contributed little or nothing to the haploscopic colour mixture, depending on the degree of amblyopia. This diminished contribution could not be enhanced by a grid. In three cases with strabismic amblyopia and in one case with strabismus alternans no haploscopic colour mixture effects could be demonstrated. The observations are discussed in the context of neurophysiological findings in the visual system of primates, and it is suggested that colour and contour are not transmitted through independent channels from the retina to the cortex. PMID- 3836393 TI - Changes in the coupling between accommodation and vergence eye movements induced in human subjects by altering the effective interocular separation. AB - It has usually been thought that the coupling between accommodation and convergence of the eyes is fixed and not modifiable by experience. Experiments are reported which show that the ratio of accommodative vergence to the accommodation stimulus, the stimulus AC/A ratio (one measure of the coupling), is elevated by brief periods (approximately 30 min) of experience of viewing the world through periscopic spectacles which increase the effective interocular separation. Experience of viewing through 'cyclopean' spectacles, which superimpose the line of sight of the two eyes, reduced the stimulus AC/A ratio in one subject and increased it in another, while it remained hardly affected in a third. PMID- 3836394 TI - Perceptual organization and apparent brightness in subjective contour figures. AB - According to a number of theories subjective contours arise from brightness contrast and/or assimilation. The apparent brightness gradients generated by these effects are assumed to give rise to the perception of contours delineating the gradients. A study is reported in which naive observers were shown a subjective contour display and asked to report what they saw. They were then asked to judge whether the center or the surround of the display appeared brighter. Subjects whose reports indicated that they had seen the subjective contour figure showed an overwhelming preference for the center of the display being brighter than the surround. However, subjects who did not see the subjective contour figure did not differ significantly in their selection of the center over the surround. This finding presents difficulties for any theory which derives subjective contours from the apparent brightness difference. PMID- 3836395 TI - [Hygienic and sanitary aspects of mass catering]. PMID- 3836396 TI - [The presence of Campylobacter thermophilus, Yersinia enterocolitica and Salmonella in animals in Umbria]. PMID- 3836397 TI - [Exposure to solvents in shoe and leather factories]. PMID- 3836398 TI - [The incidence and antibiotic resistance of bacteria of the Proteus genus in various clinical materials from regional hospitals of Perugia (1970-1981)]. PMID- 3836399 TI - [Klebsiella-Enterobacter-Serratia: occurrence and chemo-antibiotic resistance at the Perugia regional hospital (1979-1981)]. PMID- 3836400 TI - [A rubella epidemic in Trieste during the spring of 1982: investigation of the epidemic in a nursery and seroepidemiological considerations on a population of women of child-bearing age]. PMID- 3836401 TI - Placental transport of hexoses: a comparative study with antipyrine and amino acids. AB - A comparative study of the transplacental passage of some labelled hexoses, amino acids and antipyrine leads to the following conclusions: The maternal-fetal transfer of D-glucose, which amounted to 90 per cent of antipyrine, is very efficient. D-glucose, 3-O-methylglucose and 2-deoxyglucose, for which equivalent transfers were obtained, appear to share the same carrier system. L-glucose transport occurs by simple diffusion. 3-O-methylglucose did not accumulate in the placental tissue. Similarly, maternal and fetal concentrations of 2-deoxyglucose were nearly at equilibrium. It is concluded that the transport of D-glucose is not concentrative. These observations provide further evidence of a facilitated diffusion process for the transport of D-glucose across the human placental membrane. PMID- 3836402 TI - Freezing affects the activity and subcellular distribution profile of human placental xenobiotic- and steroid-metabolizing enzymes. AB - Human placentae from both smoking and non-smoking mothers were examined with respect to the activity and apparent subcellular distribution of cytochrome P-450 linked xenobiotic-and steroid-metabolizing activities. Freezing of the placental sample in pieces before preparing mitochondria and microsomes led to decreases in some catalytic activities and changed the distribution profile of activities between mitochondria and microsomes. Cholesterol side-chain cleavage enzyme and aryl hydrocarbon hydroxylase were especially sensitive to the destructive effect of freezing. Activities in the microsomes were apparently more sensitive to freezing than were those in the mitochondrial fraction. In addition to the destruction of activities by freezing, cross-contamination of microsomes and mitochondria was postulated. Freezing tended to level off the differences between induced and uninduced material. In JEG cells, the specific activities of xenobiotic-metabolizing enzymes were higher in the mitochondrial fraction. In liver biopsy samples the expected, principally microsomal, localization of xenobiotic-metabolizing enzymes was observed. It is suggested that the placenta should be processed fresh at least as far as the postmitochondrial supernatant before freezing to avoid the destructive and cross-contaminating effects of freezing. PMID- 3836404 TI - The future of underwriting. PMID- 3836405 TI - Changing prognoses in selected cancers. PMID- 3836403 TI - Absence of Wharton's jelly around the umbilical arteries: an unusual cause of perinatal mortality. AB - Three cases are described in which Wharton's jelly was completely absent around the umbilical cord arteries but was present around the umbilical vein. All three instances of this anomaly were associated with perinatal death. PMID- 3836406 TI - Survival patterns as a function of time with solid tumors. PMID- 3836407 TI - Wellness--the shape of things to come. PMID- 3836408 TI - Myocardial infarction. PMID- 3836409 TI - Stable angina. PMID- 3836410 TI - Venous thromboembolism. PMID- 3836411 TI - Natural history of low white counts and platelets. PMID- 3836412 TI - The significance of erythrocytosis. PMID- 3836413 TI - Munchausen's syndrome. PMID- 3836415 TI - Sleep apnea and snoring as risk factors for mortality. PMID- 3836414 TI - General effects of smoking on health. PMID- 3836416 TI - The natural history of obstructive lung diseases. PMID- 3836417 TI - Determination of proton spin-lattice relaxation time in vivo by field-focused NMR at 1.7 MHz. PMID- 3836418 TI - Fluorescence depolarization studies of melanosomal membranes from different sources. AB - In the present paper we report a comparative study of physical properties and biochemical composition of isolated melanosomal membranes extracted from bovine eyes and from an equine spleen melanoma. Some biophysical characteristics of such membranes were obtained by steady-state and time resolved fluorescence spectroscopy using DPH as fluorescent probe. By these methods we have measured both static fluorescence polarization and fluorescence lifetimes and from the experimental data we have calculated the rotational correlation times by Perrin's equation. Since dynamic and static parameters, such as fluidity and molecular order, can be determined by these methods, the results are discussed on the basis of the recent theories of the role of the biochemical composition in the molecular structure and properties of membranes. PMID- 3836420 TI - The influence of sorbitol on the glycogenolytic pathway. AB - The following report presents the results of a study conducted on the influence of sorbitol on levels of glycogen, phosphorylase a (E.C. 2.4.1.1.) and phosphorylase kinase (E.C.2.7.1.38) in slices of rat liver. In addition, it presents data concerning the effects of sorbitol on the activities of phosphorylase a and phosphorylase kinase purified from rabbit muscle. The data reveal a limitation in the glycogenolytic process which seems, in part, due to the inactivation of the phosphorylase a and phosphorylase kinase. Gel-filtration techniques showed, in fact, a breakdown of these two oligomeric enzymes into inactive subunits following incubation with sorbitol. PMID- 3836419 TI - Relationships between ice crystal size, water content and proton NMR relaxation times in cells. AB - Biological specimens were frozen under controlled conditions. We questioned how the size of ice crystals, as measured in cryosectioned and cryoadsorbed sections of these biological specimens, relates to the water content and to the proton NMR relaxation times (T1 and T2) of the unfrozen specimens. The results permit the following conclusions: After rapid freezing in liquid propane cooled in a liquid nitrogen bath, the average size of ice crystals at distances of 150 microns or more from the surface of a particular tissue was always the same. Thus, the average size of the ice crystals was found to be characteristic of the type of biological tissue studied. Linear regression analysis showed average ice crystal size to have a significant correlation coefficient to T1 relaxation time and to water content. Specifically ice crystal size increased with T1 relaxation time and with water content. Multiple regression and path analysis demonstrated a positive correlation between the T1 relaxation time and the ice crystal size variation. Path analysis showed that both water content and T2 relaxation time were less directly correlated with ice crystal size. The findings from the path analysis and other observations show that the average size of ice crystals in subcellular compartments is best predicted by the proton T1 relaxation time. A working model is put forth to explain differences in ice crystal size observed between specimens enriched in globular or in parallel filamentous proteins. PMID- 3836421 TI - Evidence that the redox state has a role in muscular contraction and relaxation. AB - The present work reports that simple oxidizing agents are capable of inducing isotonic contraction of rat aorta in vitro, and that the concentration of agent required depends on its oxidizing potential. Conversely a reducing agent will reverse a muscular contraction induced by oxidizing agents. PMID- 3836422 TI - [Changes in immunoglobulins in the sputum and serum after the use of secretolytics in patients with chronic obstructive pulmonary disease]. PMID- 3836423 TI - [Pulmonary and pleural asbestosis in patients from the Salonit Anhovo factory]. PMID- 3836424 TI - [Pleural effusions in cardiac insufficiency]. PMID- 3836425 TI - [Chronic bronchitis and bronchial asthma in lacquerers in the furniture industry (study of the incidence of chronic nonspecific pulmonary disease)]. PMID- 3836426 TI - [Bronchoalveolar lavage (BAL) in sarcoidosis]. PMID- 3836427 TI - [Acute toxic-irritation syndrome of the upper respiratory tract caused by diisocyanates]. PMID- 3836428 TI - [Aspirin as a bronchodilator]. PMID- 3836429 TI - [Wegener's granulomatosis: a case report]. PMID- 3836430 TI - [Tuberculosis of the larynx today]. PMID- 3836431 TI - [Dystrophy of the lung, problems with the terminology, the pathoanatomic substrate and difficulties in diagnosis]. PMID- 3836432 TI - [An approach to the therapy of bronchial carcinoma]. PMID- 3836433 TI - [Bronchoalveolar lavage and its importance in modern pneumology]. PMID- 3836434 TI - [Chemotherapy of bronchial and pulmonary carcinoma]. PMID- 3836435 TI - [Circadian immunologic rhythm in bronchial asthma]. PMID- 3836436 TI - Thin section CT of normal pituitary glands. AB - In order to better understand the CT appearance of the normal pituitary gland, we scrutinized the pituitary glands of 55 patients who had no clinical indication of pituitary abnormality. The superior surface of the pituitary gland was convex in 9 cases (16.4%), flat in 16 (29.1%), and concave in 30 (54.5%). All but one of the glands with upward convexity belonged to patients less than 40 years old. The height of the pituitary glands was from 2 mm to 7 mm in 48 (87.3%) and 7 mm to 9.1 mm in 7 (12.7%); all but one case was less than 40 years old. Although earlier reports have suggested the presence of a pituitary microadenoma when the gland has a convexity of its superior surface or is more than 7 mm in height, these findings can be seen in normal pituitary glands, particularly in younger individuals. Therefore, pituitary microadenoma should be diagnosed carefully in younger patients. The low density area frequently seen in the superior aspect of pituitary glands on axial scans was found to result from the concave superior surface of the gland. The pituitary stalk was off the midline in five patients (9%). Shifting of the pituitary stalk can be seen in the normal pituitary gland and is not always characteristic of microadenoma. PMID- 3836437 TI - Dynamic CT scanning for the evaluation of pituitary tumor invasion to the cavernous sinus. AB - A CT method for evaluating cavernous sinus invasion by pituitary adenomas or parasellar tumors is described. This technique is easily performed without special software. A persistent, isolated visualization of the internal carotid artery seems to indicate invasion of the cavernous sinus. PMID- 3836438 TI - Evaluation of the degree of severity in liver cirrhosis by computed tomography. AB - As CT findings useful for the evaluation of the degree of severity in liver cirrhosis, the following items were chosen for statistical analysis: atrophy of the right lobe, enlargement of the left lobe, irregularity of the liver surface, ascites, varices or collaterals, and dilatation of the SMV. According to the frequency with which these six items were found, the CT findings were expressed in the form of a score, and the resulting scores agreed well with ICG values, portal-venous flow (Qp) ratios obtained from radionuclide angiography, and the scores on the Child-Turcotte criteria. A score of 5 or 6 meant severe cirrhosis. A score of 4 meant liver cirrhosis, however, the degree of severity could not be determined, because there was overlap among the cirrhotic groups. A score of 3 meant liver cirrhosis with a probability of about 90%. A score of 1 or 2 was nonspecific for evaluation. When a score of 0 was noted with splenomegaly, there was a probability of more than 90% that it was chronic hepatitis. In conclusion, this approach was considered to be useful for evaluating the degree of severity in liver cirrhosis and differentiating between liver cirrhosis and chronic hepatitis to some degree in Japanese. PMID- 3836439 TI - Traumatic occlusion of renal artery: CT and angiography. AB - Four cases of traumatic renal artery occlusion are reported. A direct blow to the abdomen was considered to have caused renal artery occlusion in two cases. They were severely injured and had macroscopic hematuria. Aortography revealed an abrupt cut-off type of obstruction of the renal artery. In the other two, a rapid decelerating-type of injury resulted in damage to the intima of the renal artery. They showed almost no outward signs of injury and no macroscopic hematuria. Aortography disclosed a tapered occlusion of the renal artery. CT showed the rim sign between the seventh day and sixth week before the compromised kidney became apparent. It had disappeared by the time follow-up CT revealed contraction. One patient developed hypertension, which subsided after nephrectomy. CT findings of the patient suggested the possibility of predicting hypertension as a sequelae of acute renal artery occlusion. PMID- 3836440 TI - Computed tomographic features of renal tuberculosis. AB - Computed tomograms (CT) in twenty cases of renal tuberculosis (TB) were reviewed in comparison with intravenous urograms. CT findings were calyectasis, low parenchymal density, parenchymal retraction, and calcification. The main CT feature of renal TB was the simultaneous appearance of these findings in combination. Three of these findings were seen in two-thirds of the cases in the present series. Total renal volume was grossly normal in 10 of 24 affected kidneys and decreased in only seven. Global enlargement of the affected kidney occurred when calyceal dilatation surpassed parenchymal retraction. In our series, affected kidneys tended not to be small in size when renal TB was active. Non-functioning kidneys depicted by intravenous urography were successfully evaluated by CT. PMID- 3836441 TI - The controversial role of radiotherapy in spindle cell carcinoma (pseudosarcoma) of the head and neck. AB - Four patients with spindle cell carcinoma (pseudosarcoma) of the head and neck received radiotherapy alone or in combination with surgery. Two subjects are alive and well nine months and 98 months. The combined method of treatment was employed for both survivors. Literature review on irradiation for this disease is discussed. PMID- 3836442 TI - Fundamental dose distribution for interstitial irradiation with Au grains. AB - A principle of radiation therapy is to determine a proper dose distribution for tumor localization. In this paper we present several models of arranging Au grains for interstitial irradiation and discuss characteristics of their dose distributions. Au grains were arranged in a lattice of three by three for evaluation of isodose curves on a source plane and several planes parallel to it. Intersource distances were varied to determine adequate distances for ideal dose distributions for tumor control. Through this study, we concluded that the most favorable intersource distance for effective dose distribution was 1.0-1.25 cm. We also found that interstitial irradiation with Au grains was hard to apply to deeply spreading tumors. PMID- 3836443 TI - [Causes of chronic diarrhea in children]. PMID- 3836444 TI - [Celiac crisis: a severe pediatric emergency]. PMID- 3836445 TI - [Intestinal absorption in asymptomatic school children with Giardia lamblia]. PMID- 3836446 TI - [Peptic ulcer in pediatrics: 10 years' experience]. PMID- 3836447 TI - [Bacterial etiology of acute infantile diarrhea in autumn and winter]. PMID- 3836448 TI - [Plasma concentrations of magnesium in infants with acute diarrhea, dehydration and acidosis]. PMID- 3836449 TI - [Fulminant hepatitis in an infant of a chronic carrier mother of hepatitis B surface antigen]. PMID- 3836450 TI - [Intestinal lymphangiectasis secondary to constrictive pericarditis]. PMID- 3836451 TI - [Presence of a medical team and health practices in an urban community of low socioeconomic level]. PMID- 3836452 TI - [The Celiac Club, an alternative for the integral treatment of celiac patients]. PMID- 3836454 TI - [Nuclear medicine in the study of gastroesophageal reflux in pediatrics]. PMID- 3836453 TI - [Constipation due to anal causes]. PMID- 3836455 TI - [Symptomatic and asymptomatic infections due to Campylobacter jejuni]. PMID- 3836457 TI - [Sjogren's syndrome]. PMID- 3836456 TI - [Resident intestinal flora. Physiological functions and changes]. PMID- 3836458 TI - [Multivariant analysis of the clinical course of 160 patients with toxic syndrome during 4 years of follow-up]. PMID- 3836459 TI - [Oral propafenone in chronic ventricular arrhythmias. Prospective evaluation with the Holter monitor]. PMID- 3836461 TI - [Auditing the consumption of antibiotics in a general hospital]. PMID- 3836460 TI - [Correlation of muscular enzymes with myocardial and lower limb myography in marathon runners]. PMID- 3836462 TI - [Cancer of the lung. Treatment and short- and long-term survival]. PMID- 3836464 TI - [Testicular carcinoma secondary to a prostatic adenocarcinoma. Case report and review of the literature]. PMID- 3836463 TI - [Serum markers of hepatitis B virus infection in alcoholic hepatic disease]. PMID- 3836465 TI - [Tuberculosis with endobronchial involvement]. PMID- 3836466 TI - [Invasive pulmonary aspergillosis. 6 case reports]. PMID- 3836468 TI - [Epidemiology of arterial hypertension in the region of Sierra de San Vicente (Talavera del la Reina. Toledo)]. PMID- 3836467 TI - [Case problem: Collier's disease]. PMID- 3836469 TI - [Transverse myelitis and systemic lupus erythematosus]. PMID- 3836470 TI - [Cholestatic hepatitis caused by erythromycin estolate]. PMID- 3836471 TI - [Staphylococcus aureus aortic endocarditis as a complication of an intravenous catheter]. PMID- 3836472 TI - [Organic cerebral syndrome caused by barbiturate deprivation]. PMID- 3836474 TI - [Bone age]. PMID- 3836473 TI - [Combined treatment in head and neck cancers]. PMID- 3836475 TI - [Calcitonin levels in tissue culture of thyroid medullary carcinoma]. PMID- 3836476 TI - [Surgical repair of mid-penis, proximal penis and penile-scrotal hypospadias using a double island flap of the prepuce]. PMID- 3836477 TI - [Standardization of antimicrobial procedures using computers]. PMID- 3836479 TI - [Transudate and exudate]. PMID- 3836478 TI - [Portal hypertension caused by hepatic fibrosis of unknown origin. A case report]. PMID- 3836480 TI - [Spontaneous rupture of a renal angiomyolipoma]. PMID- 3836481 TI - Refractory anemias, pre-leukemia and myelodysplasias. PMID- 3836482 TI - [Chronic polyarthritis with disseminated cutaneous disease. Differential diagnosis and course with terminal infection caused by Toxoplasma gondii]. PMID- 3836483 TI - [Right endocardial lesions caused by central venous catheters]. PMID- 3836484 TI - [Reinfection by Toxoplasma gondii Nicolle & Manceaux, 1909 in mice and cats. Experimental study]. PMID- 3836485 TI - Paracoccidioidomycosis in children with different skeletal involvement. PMID- 3836486 TI - [Chagas' cardiomyopathy in children. Report of 2 cases]. PMID- 3836487 TI - [Evolution of endemic tuberculosis in the Province of Teruel]. PMID- 3836488 TI - [Fluorine in the drinking water of the Province of Guipuzcoa]. PMID- 3836489 TI - [Study of ovine hydatidosis using the ELISA technic]. PMID- 3836490 TI - [Campaigns of catarrh-influenza vaccination for the prevention of occupational absenteeism caused by respiratory diseases among health personnel. Hospital la Fe, Valencia. 1979-1983]. PMID- 3836491 TI - [Epidemiologic study and economic repercussions of echinococcosis and hydatidosis in the Province of Badajoz]. PMID- 3836492 TI - [Pathogenic Staphylococci and Salmonellae in commercial yogurt]. PMID- 3836493 TI - Smallpox and eradication? PMID- 3836494 TI - [The Judiciary Mental Hospital. Health or law?]. PMID- 3836495 TI - [Fishing yield and chemical pollutants in the water of Billings Reservoir, Sao Paulo (Brazil)]. PMID- 3836497 TI - [Bacterial inhibitors in B-type milk sold in the municipality of Sao Paulo, SP (Brazil)]. PMID- 3836496 TI - [Lead and cadmium poisoning among workers in plants for the repair of batteries in Salvador, Brazil]. PMID- 3836499 TI - [Nutritional anemia in pregnant women attending health centers of the State of Sao Paulo (Brazil)]. PMID- 3836498 TI - [Evaluation of storage conditions of live, attenuated vaccines against measles, in authorized vaccination centers and health services of the State of Sao Paulo (Brazil)]. PMID- 3836501 TI - [Motorcycle accidents in the municipality of Sao Paulo, SP (Brazil). 1. Characterization of the accident and the victim]. PMID- 3836500 TI - [Evaluation of the impact of supplementary feeding to pregnant women in the control of low birth weight in the municipality of Sao Paulo, SP (Brazil)]. PMID- 3836502 TI - [Mortality in children under 5 in the city of Recife, PE (Brazil). Tendencies and associations]. PMID- 3836503 TI - [Motorcycle accidents in the municipality of Sao Paulo, SP, Brazil. Mortality analysis]. PMID- 3836504 TI - [The rural internship in the graduate course in nutrition of the Federal University of Vicosa (Brazil)]. PMID- 3836505 TI - International symposium on effects of indoor air pollution with special reference to nitrogen oxides and smoking. Lyngby, Denmark, January 26-27, 1984. PMID- 3836506 TI - Harvard Air Pollution Health Study in six cites in the U.S.A. AB - The Harvard Air Pollution Health Study has been a ten year prospective study of respiratory symptoms and pulmonary function of children and adults living in six U.S. communities. Indices of acute and chronic effects of air pollution exposures have been studied. Evidence is presented for adverse effects of ambient and indoor air pollution on children. Relationships between ambient TSP concentrations and hospital emergency room admissions, temporary decreases in pulmonary functions and prevalence of community bronchitis all indicate a slight adverse effect. Refinements of these relationships will occur when fine fraction and acid sulfate aerosol concentrations are incorporated into the health analysis. Exposures to cigarette smoke at home are associated with increased reported respiratory symptoms in children. There is a negative relationship between maternal smoking and age and sex adjusted height for children. Results from indoor and personal exposure studies have lead to the design of an acute symptoms and indoor air pollution study. Between 1985 and 1988 1800 children will be tracked for a year while respirable particles, nitrogen dioxide, water vapor and air exchange will be measured in their homes. Using continuous sulfate/sulfuric acid monitors built at Harvard, we are characterizing the magnitude, duration and frequency of acid aerosol events in each of our study cities. This information will be utilized in the analysis of the respiratory symptom data. The Harvard Air Pollution Health Study is providing information on the relationship among health variables and air pollutant exposures. In addition, this study will add to our understanding of lung growth and aging and the risk factors associated with chronic respiratory disabilities. PMID- 3836507 TI - Passive smoking--a new target of epidemiology. AB - Health consequences of passive smoking has thus emerged as a new target of epidemiological research and control of such important diseases as cancers of lung and nasal sinus, brain tumors, cancer of all sites and ischemic heart disease. The 16 years follow-up results of a large scale cohort study for 91450 non-smoking wives revealed significant and consistent dose-response relationships with the risk of each of these diseases and the extent of husband's smoking. The consideration of influence of passive smoking must be quite important if we aim to effectively control these diseases. PMID- 3836508 TI - Measurements of carbon monoxide and nitrogen dioxide in British homes using unflued heating or cooking appliances. AB - Measurements of Carbon Monoxide (CO) and Nitrogen Dioxide (NO2) were made in three kitchens, two with gas cookers and one all electric, and two living rooms, one heated by a portable butane heater and the other by a paraffin stove. The measurements were taken whilst the homes were in normal use and the occupants kept a diary of when specific appliances were used. Measurements of NO2 were made simultaneously by chemiluminescence and by diffusion tubes. The accuracy of the diffusion tube measurements relative to the chemiluminescent standard was estimated as +/- 10% and the precision less than or equal to 300 ppb. hr. Results from diffusion tubes were used to indicate the distribution of NO2 throughout other rooms in the house. At the all electric house the CO and NO2 concentrations were very similar to the expected outdoor levels. In all the other houses NO2 levels exceeded typical outdoor concentrations measured in Central London and in the paraffin heated house and one gas cooking house median CO concentrations exceeded these measured at the curbside of a very busy road in Central London. The living room concentrations of NO2 where the paraffin heater was in use were elevated for long periods. Analysis of the decay of pollutant concentration in one kitchen yielded an effective deposition velocity for NO2 of 3 X 10(-5) m s-1. The magnitude of the CO and NO2 concentrations measured in this survey confirms that indoor air pollution should be taken into account when assessing overall public exposure to air pollution. PMID- 3836509 TI - Personal exposure to nitrogen dioxide and its relation to indoor and outdoor air quality. AB - An estimating equation of annual geometric average of personal NO2 exposure was proposed. The average could be calculated from three variables, that is, personal NO2 exposures in one winter and one summer month and ratio of winter period in a year. Ten housewives living in Suginami Ward, a residential area in Tokyo, were chosen as subjects of this study. They were asked to measure daily averages of the personal NO2 exposures with a filter badge. Measurements were performed on consecutive seven days in every month from January to December of 1982 for a total of 84 samples per person. Their activities, the amount of fuel consumption and other living conditions were recorded at the same time. Outdoor NO2 concentrations and maximum, minimum and average temperatures were also measured at the center of their living area. The personal NO2 exposure and its seasonal variation were found to depend mainly on the type of space heaters, frequency of ventilation fan usage in a kitchen, and the amount of fuel consumption. PMID- 3836510 TI - Scandinavian experiences with indoor air pollution. AB - The building illness syndrome (BIS) with complaints about dryness and irritation of the mucous membranes of the eyes, nose and throat, and headaches is very common in Scandinavian buildings. The causes for BIS may be psychosocial, biological, physical or chemical factors in the indoor environment. Of these the chemical factors are considered to be the most important. BIS can be caused by formaldehyde, but the main sources of this emission are now controlled in the Scandinavian countries. As BIS complaints still are common, organic gases and vapors are considered to be the most important cause of BIS today. These gases and vapors are emitted from many building materials, and mixtures of these have been shown to be irritating in concentrations about 5 mg m-3, a concentration which is often found in new buildings. It is still an unsolved problem if BIS is due to the mixture of the organic gases and vapors themselves, or decomposition products in low concentrations, as for example peroxyacetyl nitrates known from outdoor air pollution. Irrespective of the cause, the rational approach would be a reduction of the emissions of organic gases and vapors from building materials or an increase of ventilation rates. The latter solution is not desirable due to the economic burden and to the need for energy conservation. We therefore suggest that building materials should be tested for emission of pollutants, so that materials emitting high concentrations of toxic substances can be identified and replaced by materials emitting less toxic substances and with emission of a lower rate. PMID- 3836511 TI - Longitudinal monitoring of changes in individual smoking habit over 13-year period among adults. AB - The purpose of the longitudinal monitoring of smoking habits among adults was to define demographic and social characteristics which may contribute to the persistence of smoking and to evaluate the effectiveness of the preventive programs undertaken by the mass media. The data has been collected during the follow-up epidemiological study on chronic nonspecific chest diseases in Cracow, Poland. In total the material covered a sample of 2965 persons who were interviewed three times over 1968-81 period. In the analysis the prevalence rates, incidence and cessation rates have been taken into consideration. The results obtained in the study confirm the decline in the prevalence of smoking habit among men but among females increased substantially in the younger birth cohorts. Incidence rate of smoking in females was higher than in men but cessation rates were very similar. The striking was the fact that the prevalence of smokers in the youngest age group in university graduates was about three times higher in women than in men. The results call for more knowledge about the psychosocial factors that may contribute to the initiation of smoking and more effective strategies applied to deter the onset of smoking. PMID- 3836512 TI - Confronting the effects of smoking and air quality on the development of chronic respiratory diseases. AB - The main purpose of the paper was to compare the effects of outdoor and indoor air quality on the development of chronic respiratory diseases measured in the prospective study of chronic chest diseases among the inhabitants of Cracow, Poland. The 5-year follow-up study covered a probability sample of 4355 adult inhabitants. Data on respiratory symptoms and lung function in addition to variables related to environmental and socioeconomic factors were included. To assess the separate and joint effects of the chosen environmental factors on chronic chest problems, the multiple logistic regression analysis has been carried out. As expected, smoking habit was the strongest single of the factors related to the persistence of the respiratory symptoms. The effect of smoking was more marked in men than in women and this can be attributed to longer duration of smoking and more cigarettes smoked daily by men. Out of all considered adverse occupational factors only chemicals increased the risk of chronic bronchitis in men while dust increased the risk of exacerbations in women. The data showed a significant decrease in risk of exacerbations among the women who used a gas stove for cooking. The study also confirmed the harmful effect of smoking on lung function. Against this particular background the importance of variable temperature combined with ambient air pollution appeared to have rather strong detrimental biologic impact. PMID- 3836513 TI - Indoor air pollution due to tobacco smoke under real conditions. Preliminary results. AB - A short review exploring the generation and composition of tobacco smoke is given. Experimental arrangements used to record sidestream smoke are critically discussed. Data from own experiments in a tobacco smoke polluted office room were presented and discussed. These data include nicotine, ammonia, formaldehyde, acetaldehyde, hydrogen cyanide, CO, NO and NO2. First results about the diameter of the particles in the smoke polluted room were also given. By the aid of the RINGOLD's equation the COHB content on basis of the CO-values of exhaled breath of active and passive smokers were determined. Data about the nitrosamine content in the air of the room during the smoke tests were also given and discussed. PMID- 3836514 TI - Irritating and annoying effects of passive smoking. AB - The acute irritating and annoying effects have been investigated in field and laboratory studies in relation to the concentration of some smoke components in the air. At the workplace 30 to 70% of the indoor CO, NO and particle concentrations are due to tobacco smoke; 25-40% of the employees are disturbed and annoyed by smoke, one quarter suffers from eye irritations at work. Subjective eye, nose and throat irritations and eye blink rate increase with increasing smoke concentration as well as with increasing exposure duration. Irritations are mainly due to the particulate phase of environmental tobacco smoke, whereas the gas phase is to a large extent responsible for annoyance. It is concluded that an average healthy person can be exposed to an acceptable cigarette smoke level which produces a carbon monoxide concentration of 1.5 to 2.0 ppm. Above these limits, counter-measures to protect passive smokers are necessary. The required fresh air supply values are presented. PMID- 3836515 TI - Stability of tobacco smoke odor in enclosed spaces. AB - During each of five experiments, four sedentary subjects smoked a total of 8 cigarettes during one hour while occupying an odor test chamber. The air temperature was 20-22 degrees C and the relative humidity was 35-50%. During the entire test period (6 h) the odor intensity in the chamber was evaluated by judges. After smoking ceased, the odor intensity continued to rise for one or two hours and then remained constant in a way that is characteristic of unreactive contaminants. PMID- 3836516 TI - Evaluation of biological significance of nitrogen oxides exposure. AB - This paper attempts to assess health risks associated with nitrogen oxides (NOx) exposures. Experimental animal studies show that continuous or intermittent exposures to concentration of 0.04 to 0.5 ppm nitrogen dioxide (NO2) produce a number of pulmonary and systemic effects. Controlled human exposure studies show that short-term exposures to 0.3 to 0.5 ppm NO2 or 1.0 ppm nitric oxide produce bronchoconstriction and blood biochemical changes in some subjects. When we consider together both findings of the animal and human exposure studies, we may suggest with some reliability that the concentrations of NOx in ambient and indoor air pollutions may have adverse health effects on some subjects, and may partly contribute to the respiratory symptoms or illness and reduced pulmonary function observed in the epidemiological studies. PMID- 3836517 TI - Certain aspects of the responses of laboratory rats to exposure to (a) nitrogen dioxide and (b) tobacco smoke. AB - Exposure of rats to 150 ppm NO2 for 2 hours causes death from pulmonary oedema. Continuous exposure to 25 ppm for 150 days causes gross enlargement with loss of elastic recoil and proliferative and metaplastic epithelial changes in the vicinity of the terminal bronchioles. Continuous exposure to 2 ppm results in an initial loss of cilia and focal hyperplasia of the terminal bronchiolar epithelium, but these changes, for the most part, quickly subside. Chronic daily exposure of rats to tobacco smoke results in proliferative and metaplastic epithelial changes in the vicinity of the terminal and respiratory bronchioles. Also, both at this site and elsewhere, aggregates of golden-brown pigment-laden macrophages accumulate in the lungs. The proliferative/metaplastic changes are similar to those seen in response to NO2, asbestos and other irritant gases and particles. The aggregates of golden-brown macrophages are seemingly a special feature of the response to tobacco smoke. Some rats exposed for over two years to tobacco smoke, develop foci of squamous metaplasia, firstly in the region of terminal bronchioles, but later at points scattered throughout the lung parenchyma. Comparable changes have not been reported in rats exposed to NO2. Although no strictly comparable data for NO2 and tobacco smoke exposure are available, it is reasonable to conclude that, whereas the NO2 in tobacco smoke may contribute to the production of cuboidal/columnar metaplasia in the vicinity of terminal bronchioles, it otherwise plays little part in the aetiology of lesions in the lungs of smoke-exposed rats. PMID- 3836520 TI - Current obstetrical studies on smoking in Japan (2). Smoking and preterm labor. PMID- 3836518 TI - Do the oxides of nitrogen in cigarette smoke cause emphysema in smokers? PMID- 3836521 TI - A plan of the comprehensive study on indoor pollution and its health effects by the Aichi Prefecture, Japan. AB - In order to study the level and nature of the indoor pollution and its possible health effect the Department of Public Health of the Aichi Prefecture in Japan is planning to conduct a comprehensive study on indoor pollution. An outline of this study is presented in this report. The study will consist of measurements of the indoor pollution and health surveys for a sample of 10 large buildings and 75 houses involving 2,000 persons for the former and 1,000 three year old children and their mothers for the latter. The major survey items on the indoor pollution are measurements of suspended particles, CO, CO2, NO2, formaldehyde, falling and floating bacteria and fungi, mutagenicity, types of air cleaners, air conditioners and ventilators, and the number of smokers etc. The major health survey items are a questionnaire survey on respiratory diseases, pulmonary function tests, chest X-ray test, and measurement of urine hydroxyproline concentration. This comprehensive study on indoor pollution will be conducted for 5 years beginning the fiscal year 1984. PMID- 3836519 TI - Investigations into the relations between respiratory illness in children, gas cooking and nitrogen dioxide in the U.K. AB - In 1977 an association was reported between the prevalence of respiratory illness and use of gas for cooking at home in a national sample of six to 11 year olds living in England and Scotland (p less than .10). Other variables such as social class and number of cigarette smokers at home did not seem to explain the association. As the gas cooker is an unflued appliance emitting a variety of pollutants during gas combustion it was suggested that indoor air pollution might explain the finding. Nitrogen dioxide (NO2) was suspected so a series of studies was conducted to investigate the distribution of levels of NO2 in the home, the relative contribution of sources of NO2 to indoor exposure and the relation between respiratory illness in six to 11 year olds and levels of NO2 in the home. The gas cooker was found to be one of the main sources of NO2 in the home. Winter weekly averages in kitchens with gas cookers had a mean of 112.2 ppb (n = 428, range 5-317 ppb). Levels in electric cooking kitchens were significantly lower (n = 87, mean 18 ppb, range 6-188 ppb). Studies of health indicated a relation between respiratory illness and bedroom levels of NO2 over the range 4-169 ppb (p .10). Results for living room levels of NO2 suggested a similar but non significant relationship (p greater than .10). No relation was found for kitchen levels of NO2. For schoolchildren any effect on health from indoor NO2 is likely to be weak. However other sections of the population such as infants and the elderly who may spend more time indoors and are particularly susceptible to respiratory illness need to be studied to assess fully the impact that NO2 may be having on health. PMID- 3836522 TI - Relationship between parental smoking and respiratory diseases of three year old children. AB - In order to study the effect of the indoor pollution, particularly by parental smoking, on respiratory diseases of children, the relationship was examined between smoking by family members, use of various types of stoves and air conditioners, and the prevalence rate of respiratory diseases in 7,916 three year old children who, for health check up, visited the Chita Public Health Center located in the Aichi Prefecture in 1978-1979. Results of this study suggested that among various sources of the indoor pollution, smoking by mother had the strongest effect on respiratory diseases, especially asthmatic bronchitis of young children, while the use of various types of stoves including non-ventilated kerosene stoves was not related significantly to the prevalence rate of respiratory diseases of those children except an increased rate of frequent common cold in children of households having an air conditioner(s). PMID- 3836523 TI - Indoor infection in a modern building. AB - Outbreaks of tuberculosis (TB), which are of a type rarely experienced in the past, have recently increased in Japan. An example of such an outbreak, which occurred in a modern building with fixed sash windows, will be described. The occurrence of four TB cases, which had been found during the period between May 1979 and June 1980 among company employees working in the same building in downtown Tokyo, motivated the conduct of epidemiological and environmental surveys on this episode. The first case, a 36-year-old male with a positive smear and cavities in both lungs, was considered to have been in an infectious state for about one year before his admission to a TB hospital in June 1979. Follow-up investigation of 99 contacts until March 1982 revealed the occurrence of 16 secondary cases. The secondary attack rate was highest among those working on the same floor of the building as this first case, but no case was found among employees of another company that occupied this building. The desks of secondary cases were aggregated near and around that of the first case. Although this building had central air-conditioning, ventilation was often closed for energy conservation purposes. This resulted in the increase of carbon dioxide concentration in the air up to a level of more than 1,000 ppm during working hours and to as high as 2,000 ppm when the ventilation was closed. It was thus concluded that the indoor infection of TB in this episode was attributable to the insufficient ventilation in the building. PMID- 3836524 TI - Urinary hydroxyproline excretion in smokers, non-smokers and passive smokers. AB - The hydroxyproline/creatinine ratio in urine was investigated in 200 cigarette smokers, 199 pipe and/or cigar smokers and 24 non-smokers. For cigarette smokers a statistically significant positive correlation is found between this ratio and daily cigarette consumption, COHb, serum cotinine and nicotine excretion in urine. This smoking-related increase in the hydroxyproline/creatinine ratio is, for the most part or completely, due to the fact that creatinine urine concentrations inversely correlate with the smoke uptake variables. Neither pipe and/or cigar smoking nor passive smoke exposure of non-smokers seem to affect the hydroxyproline/creatinine ratio. A seasonal influence is found in these studies as well as in two experiments with limited numbers of subjects: the hydroxyproline/creatinine ratio is higher in winter than in summer for both smokers and non-smokers. Our data do not favour the idea that measuring hydroxyproline/creatinine ratios in urine is an accurate method of investigating early effects of smoking, passive smoking and air pollution in man. PMID- 3836527 TI - Passive smoking in aircraft--a current WHO project. AB - Only few measurements of levels of pollution by tobacco smoke in aircraft have been made. The results suggest that levels are quite moderate, but studies of actual reactions by passengers and cabin crew indicate rather strong, objective effects. These consist of irritation of the mucous membranes of eye, nose and throat as well as perception of bad odours. Evidently, environmental tobacco smoke causes distress in aircraft already at lower concentrations than under ground conditions, probably because of special climatic conditions such as ultra low air humidity, elevated levels of ozone, subnormal air pressure and, eventually, disturbance of the concentration of light air ions. None of these abnormalities can easily be eliminated. Ventilation, however effective in terms of rate of air changes, can not effectively curb local peak concentrations, and, close to a smoker the concentration of smoke may be 100 times as high as the room average. Therefore, aircraft must provide separate smoking resp non-smoking areas. Area division along an aisle is unacceptable since the ventilation system makes the aisle and adjacent seats on both sides be located in one whirl of common air. WHO will try to stimulate improvements of airline practices and aircraft design. PMID- 3836526 TI - Preliminary studies of urinary hydroxyproline levels in rodents and in smokers. AB - Groups of rats were exposed to four dilutions of cigarette smoke over a period of our weeks. Compared to the control (untreated) group of animals, the 24-hour hydroxyproline output (relative to creatinine) was lower for all dilutions of smoke and showed a negative dose-response relationship. In human smoking studies, in which groups of 20 male subjects and 20 female subjects were switched between various cigarettes for periods of 2 weeks, hydroxyproline output (relative to creatinine) for each sex did not change with increasing nicotine uptake although the outputs for men and women were significantly different. PMID- 3836525 TI - A comparative study on the health effects of smoking and indoor air pollution in summer and winter. AB - This study was performed by a comparison between summer and winter for the purpose of demonstration the actual conditions of health effects of indoor air pollution with special reference to NO2 and smoking, on the subjects composed of 820 school children and their 546 mothers in the two areas with different ambient NO2 concentrations. In either case, examination was carried out with standardized questionnaire test for respiratory symptoms, personal NO2 exposure measurement using the filter badge by Yanagisawa, and analysis of urinary hydroxyproline and creatinine in two areas with different ambient NO2 levels. Personal NO2 exposure level in winter season was 2-3 times higher than that in summer, particularly NO2 level among residents living in homes with non-vented stove for space heating was substantially higher from those of residents with vented stove. Wives with vented stove had a moderate exposure level in winter season by the contribution of NO2 originated from the kitchen and poor ventilation rate. Since the hydroxyproline to creatinine ratio (HOP-ratio) of children increased more, their household location were nearer to any heavy traffic roads in summer, health effects from automobile exhaust were suggested only in summer season. In summer season, personal NO2 exposure level were almost the same with the ambient NO2 concentrations over both areas. These results suggest that indoor air pollution in winter season may be separated from outdoor air pollution. It was a matter of course that hydroxyproline to creatinine ratio in winter season was higher than that in summer, in any group and in any area, but the range of variation of hydroxyproline to creatinine ratio was smaller by far than that of personal NO2 exposure level. Judging from urinary hydroxyproline to creatinine ratio, health effects of active smoking and passive smoking increased with increasing the number of smoked, dose-dependently in any season. According to stepwise multiple regression analysis, hydroxyproline to creatinine ratio had significant relation to either NO2 and active or passive smoking, but personal NO2 exposure level had no relation to cigarette smoking. NO2 and cigarette smoke were seemed to make hydroxyproline to creatinine ratio increase, independently each other. PMID- 3836528 TI - The tobacco problem in Denmark and the difficulties in implementing an organized plan of action. AB - In Denmark tobacco consumption has increased considerably during the last few decades. Almost 2 million people of a population of 5 million are smokers. Of the male population 48% are smokers, of the female population 46%. From 1981 to 1982 the cigarette consumption increased from 7,300 million to 8,000 million. Consumption of pipe tobacco increased slightly, whereas cigars and cigarillos were considerably reduced. The tobacco tax amounts to 6,500 million Dan. kr. annually (700 million US$). The tobacco industry's cost of marketing tobacco products are unknown, but advertising, for one thing, amounts to 25 million Dan.kr. annually (3 million US$), which is only a small fraction of the total cost of marketing. For comparison: On health information some 2 million Dan.kr. is spent annually by private associations. In 1970 and 1981 efforts were made to have a tobacco bill passed in the Danish Parliament-but with no success. Since 1972 there has been a gentleman's agreement between the ministry and the tobacco branch concerning the size and the content of tobacco advertising. The agreement was an evasive action initiated by the tobacco branch. During the tobacco bill debate in the Danish Parliament in 1981 the tobacco industry launched an aggressive and misleading advertising campaign in the large newspapers against the Minister of Interior. It says in the International Codes of Marketing Practice 1973 set forth by the International Chamber of Commerce: "all advertising should be legal, decent, honest and truthful" and "the advertisements should be prepared with due sense of social responsibility..".(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836530 TI - International colloquium. Medical research in Europe: present and future. Brussels, 27-28 September 1985. PMID- 3836529 TI - Domestic smoke pollution and respiratory function in rural Nepal. AB - A study was conducted to see the effect of domestic smoke pollution on respiratory function by using vitalograph Model 20.400 S-type dry portable spirometer in 150 randomly selected female subjects aged 30-44 years from a rural area situated in the outskirts of Kathmandu valley at an altitude of 4,800 ft. above sea level. The area is totally free from industrial and atmospheric pollution. Women spend considerable time near the fireplace, which serves both cooking and heating purposes and emits smoke from wood and other biomass fuel. Domestic smoke pollution is considerable because dwellings are ill-ventilated and without chimnies. The selected sample comprised of 6 groups-25 subjects each of 3 exposure levels to domestic smoke pollution amongst smokers and non-smokers. All the spirometric tests (FVO, FEV1 and FMEF 25-75) were performed in a standard way as recommended by American Thoracic Society in Snowbird Meeting in 1979. Variation of age, height, arm-span and weight between the three different levels of exposure to domestic smoke in both the smokers and non-smokers were compared and results revealed no significant variation in all the variables mentioned above. There was a fall of mean FVC, FEV1 and FMEF 25-75 as duration of exposure increased. This decline was found to be statistically significant amongst the smokers but not amongst the non-smokers. Similar results was found even after adjusting for age & height. PMID- 3836531 TI - Importance and role of basic research for medical research. PMID- 3836533 TI - Cooperation between university and industry in the field of medical research. PMID- 3836532 TI - Role and importance of clinical medical research. PMID- 3836534 TI - Cooperation between the Medical Research Council and industry within UK. PMID- 3836535 TI - European Medical Research Councils. PMID- 3836536 TI - European Economic Community and medical research. PMID- 3836537 TI - Medical research in Belgium. PMID- 3836539 TI - The academic hospital and medical research. PMID- 3836538 TI - The medical faculty and medical research. PMID- 3836540 TI - Exchanges between university and industry. PMID- 3836541 TI - Options and priorities in medical research. PMID- 3836542 TI - [Intermediate gastric cancer]. AB - It is presented a case of gastric cancer that penetrates the stomach wall up to the muscular layer (C.G.P.M.). In a 53 years old patient, who consulted for abdominal pain and weight lost, and who has at the present a survival of 2 1/2 years, symptom free, the radiology, endoscopic and anato-pathologic features of this disease, are analyzed. The transcendence in diagnostic of gastric cancer in this stage is emphasized. PMID- 3836543 TI - [Intestinal metaplasia of the stomach. Frequency in a study of endoscopic biopsies]. AB - The histologic sections of gastric endoscopic biopsies performed during a 4 years period were reexamined. Those cases in which the whole mucosa was not included in the biopsy and those of cancer or peptic ulcer in which another biopsy of normal mucosa outside of the lesion was not obtained, were ruled out. The presence of intestinal metaplasia (IM) and gastritis was investigated. Gastritis was classified according to Whitehead. No attempt was made to grade IM. The relationship of the frequency of IM with age, severity of gastritis, cancer, peptic ulcer and different areas of the stomach was studied. Cases without cancer or peptic ulcer were used as controls. IM was present in 67 (32.1%) out of 209 cases that were reviewed. A significant difference in the frequency of IM was found between those cases below 40 years and those with 41 or more. The difference was not significant when the following decades were considered (tables 1, 2 and 3). Either was there any significant difference of frequency between sexes. According to our criteria for the selection of cases only 16 carcinomas were included in this series. IM was observed in 50% of the cases. Fifteen patients had more than 50 years. There was a considerable difference in the percentage of IM between this group and that of the controls with 50 or more years, nevertheless this difference was not significant, probably because of the small number of cases, (table 6). IM was found in 48.8% of 43 cases with peptic ulcer.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836544 TI - [In vitro effect of 2 pharmaceutical preparations containing bismuth on the fermentative capacity of intestinal bacteria]. AB - An investigation was done on the action in vitro of two pharmaceutical preparations containing Bi, De Nol and Pepto Bismol, on the fermentative capacity of intestinal bacteria. For the purpose, using an instrument and a technique previously described, fecal fermentation (FF) was measured in 21 stool samples, to which lactose was added to assure appreciable levels of fermentation. In 11 of the samples, FF was measured without and with addition of De Nol; and in the 10 remaining samples, without and with addition of Pepto Bismol. In 7 of the samples with which the action of De Nol was studied, this preparation significantly reduced FF from 10.9 not equal to 4.3 (mean not equal to s. d.) to 4.9 not equal to 5.0 ml of gas/24 h (p less than 0.02); on the contrary, in the 4 remaining samples, it increased FF, although not significantly, from 8.7 not equal to 4.8 to 16.7 not equal to 8.8 ml of gas/24 h (N.S.). Pepto Bismol significantly reduced FF, in all the 10 samples with which the action of that pharmaceutical - preparation was investigated, from 11.7 not equal to 6.1 to 3.0 not equal to 2.1 ml of gas/24 L (p less than 0.0001). A discussion was done on the possible mechanisms of the antifermentative action of Bi, as well as on the probable usefulness of De Nol and Pepto Bismol for the control of exaggerated intestinal fermentation and the flatulence it frequently causes. PMID- 3836545 TI - [5-fluorouracil in high doses. Principles and toxicity]. AB - 5 fluorouracil (5FU) is considered the most important chemotherapeutic agent for gastrointestinal cancer treatment. High dose 5FU (3 gr./m2), given together with allopurinol to prevent normal tissue toxicity may be used to get a better therapeutic index. Toxic effects are specially considered in this paper, where effects in 20 advanced gastrointestinal patients are evaluated. Taking into consideration the results obtained, we consider it can be safely used in this way. PMID- 3836546 TI - Fine structure of bone marrow stroma. PMID- 3836547 TI - Prediction of the response to chemotherapies in the patients with acute leukemias based on the initial cytogenetic analysis. PMID- 3836548 TI - Chromosome aberrations in hemopoietic precursor cells. PMID- 3836549 TI - Leukemogenesis and chromosome aberrations: de novo leukemia in humans--with special reference to atomic bomb survivors. PMID- 3836550 TI - Cancer chemotherapy and the development of secondary leukemia. PMID- 3836551 TI - Congenital and acquired antithrombin III deficiency. PMID- 3836552 TI - Antithrombin III Toyama: a congenital antithrombin III abnormality with recurrent thrombophlebitis. PMID- 3836553 TI - Abnormal behaviors of ATIII due to conformational changes in a thrombophilic patient. PMID- 3836554 TI - In vivo differentiation of mast cells. PMID- 3836555 TI - Proliferation and differentiation of murine mast cells in vitro. PMID- 3836557 TI - Analysis of the amino acid sequence. PMID- 3836556 TI - Factors regulating the in vitro differentiation of human basophils and mast cells. PMID- 3836558 TI - Reduction of hemoglobins M by enzymatic reducing system. PMID- 3836559 TI - Abnormal hemoglobins in Japan. PMID- 3836560 TI - Thalassemia in Japan. PMID- 3836561 TI - Production and characterization of monoclonal antibodies to Leishmania donovani. PMID- 3836562 TI - Retrospective reflections of a medical parasitologist: experiment and auto experiment. PMID- 3836563 TI - [The immunopathological study on experimental models of rheumatic carditis]. PMID- 3836564 TI - A survey of the postpartum reproductive performance of dairy cows with fertility problems in southern Iceland. PMID- 3836565 TI - Vibrio anguillarum: prevalence of typical and atypical strains in marine recipients with special reference to carbohydrate pollution. PMID- 3836566 TI - Nasal tumor in a fallow deer (Dama dama L). A case report. PMID- 3836567 TI - The occurrence of summer mastitis in Jutland (Denmark) in relation to meteorological factors. PMID- 3836568 TI - Ketosis in Norwegian dairy herds--some epidemiological associations. PMID- 3836569 TI - Kinetics of intravenously administered lactose in cows. PMID- 3836570 TI - Abaxial implantation of the middle piece in spermatozoa and spermatids in related sterile boars. PMID- 3836571 TI - Pathogenicity for chickens of a paramyxovirus type 1, isolated from racing pigeons in Sweden. PMID- 3836572 TI - Spontaneous aortic lesions in moose (Alces alces L). PMID- 3836573 TI - Spontaneous aortic lesions in fallow deer (Dama dama L). PMID- 3836574 TI - Serological characterization of Haemophilus pleuropneumoniae (Actinobacillus pleuropneumoniae) strains and proposal of a new serotype: serotype 10. PMID- 3836575 TI - Kelly v. Gwinnell: social host liability--how great a burden? AB - In 1984, the New Jersey Supreme Court became the first high court to impose liability successfully upon social hosts for the torts of their intoxicated adult guests. The wisdom or folly of that decision, and its social ramifications, have become subjects of widespread discussion. This Case Comment argues that social host liability, in its present form, is an unwise extension of common law principles. Through an examination of the elements of the cause of action proposed, the standards of proof employed, and the public policies weighed by the court, this Comment concludes that social host liability is ill-adapted to furthering the court's stated goal of reducing drunken driving. PMID- 3836576 TI - Heckler v. Chaney: judicial and administrative regulation of capital punishment by lethal injection. AB - Capital punishment by lethal injection, which was expected to be the most safe and effective of available methods, can produce unusually cruel and inhuman death. In Heckler v. Chaney, inmates sentenced to death by lethal injection, as well as members of both the medical and legal communities, challenged the Food and Drug Administration's (FDA) refusal to regulate certain drugs used for capital punishment by lethal injection. By declining to review the FDA's nonenforcement decision, the Supreme Court also declined an opportunity to reevaluate its standard for determining cruel and unusual punishment, which upholds any method of execution that is no more unusually cruel than existing methods. This Comment examines the propriety of judicial and administrative regulation of capital punishment by lethal injection. PMID- 3836577 TI - [Importance of histochemical study in the postoperative surveillance of carcinoid of the appendix]. PMID- 3836578 TI - [Surgical treatment of rupture of an abdominal aorta aneurysm in patients with fibromuscular arterial dysplasia]. PMID- 3836579 TI - [A case of primary arterio-appendiceal fistula]. PMID- 3836580 TI - [Surgical treatment of aneurysms of the ascending aorta associated with an aortic valvulopathy]. PMID- 3836581 TI - [Indications for the sternal approach in mediastinal goiter]. PMID- 3836583 TI - [Calumny and abuse of psychiatry in some divorces. Necessity of the examination and criticism of testimony]. PMID- 3836582 TI - [Physiopathologic aspects of the functional reconstruction of a digital flexor tendon retracted due to an inveterate burn]. PMID- 3836584 TI - [A spectacular case of automutilation]. PMID- 3836585 TI - [Despair. A psychopathological study (3)]. PMID- 3836586 TI - [Insulin therapy and its psychological effects]. PMID- 3836587 TI - [Organization of psychiatry in the Shanghai region]. PMID- 3836588 TI - [Manic change after violent suicide (hanging) in 4 melancholic depressive patients]. PMID- 3836590 TI - [An experimental approach to depression in women]. AB - Through a review of the literature concerning the preponderance of depression among women, the authors ask whether the symptoms of female depression has a specificity. The results of a study, realized in the Department of Psychiatry of the University of Limoges, showed that the depression among women is not only different and preponderant, but also more acute. More than a consequence of predisposing, life events as about men, the onset of depression among women seems to depend on precipitating life events. PMID- 3836589 TI - [Ethnopsychomotricity and identity: role of the position of the body of the child and mother]. PMID- 3836591 TI - [Changes in free and total thyroid hormones and reverse T3 in adult male rats during fasting]. AB - The serum levels of thyroid hormones (T3, F.T3, RT3, T4 and F.T4), cholesterol and triglycerides were measured in a population of adult male rats subjected to experimental fasting. Comparison of bindings with results published in the literature reveals certain disagreements attributable to individual variations in the animals resulting from physical or physiological factors. This study demonstrates that deiodination of thyroxine in T3-Reverse has an economic role on a metabolic level. Evaluation of the T3/RT3 ratio appears to provide an indication of the homogeneity of the peripheral metabolism in an experimental population. PMID- 3836592 TI - [Thymus-hypophysis-thyroid interrelation in rats after administration of a heterologous extract of thymus gland]. AB - The Authors have investigated the effects of a thymus chromatographic fraction on TSH, T3, T4 serum values in thyroidectomized and normal controls rats before and after thymus treatment. The decrease in TSH values of thyroidectomized rats points out a possible inhibitory effect which the thymus extract may have at either the level of the adenohypophysis or hypothalamus. Moreover the TSH values in the euthyroid rats after thymus treatment showed a slight decrease, this changes are much more evident in the thyroidectomized rats after thymus treatment. In fact the plasma TSH of thyroidectomized rats drops from 97.5 +/- 4 microU/ml before thymus treatment, to 76.25 +/- 10 microU/ml after thymus treatment. PMID- 3836593 TI - [Preliminary study in female rats of the immunoregulatory effect of estradiol, progesterone and pituitary prolactin on natural killer-like cell mediated cytotoxic activity]. AB - A spontaneous non-immune natural killing-like cytotoxic activity is induced in cyclic non mated virgin F/344 females by progesterone + oestradiol or progesterone alone treatment after bilateral ovariectomy. Many indications attribute this cytotoxic response to the absence of the mating stimulated pituitary prolactin release which normally rescues the corpora lutea from regression, and brings about the necessary progesterone for pregnancy or pseudopregnancy. PMID- 3836594 TI - Seasonal changes in the serum calcium level and prolactin cells of Clarias batrachus in relation to the reproductive cycle. AB - The female specimens of Clarias batrachus show marked seasonal changes in serum calcium level and prolactin cells in relation to the ovarian cycle. The serum calcium level records the maximum value during the prespawning phase whereas, the prolactin cells show minimum activity during this phase. Thus, there is an inverse correlation between the serum calcium level and prolactin cells during the annual ovarian cycle. In male specimens there is no change in the serum calcium level and prolactin cells in relation to the testicular cycle. PMID- 3836595 TI - Olfactory centers and pathways in vertebrates. PMID- 3836596 TI - [The human nasal mucosa as seen by scanning electron microscopy]. PMID- 3836597 TI - [The mineralization process of the cementum in human teeth]. PMID- 3836598 TI - [Effects of IR laser irradiation on the rat mammary gland]. PMID- 3836599 TI - A simple method for the isolation of highly purified neutrophil granulocytes from human peripheral blood. PMID- 3836600 TI - Bridges of myocardium over branches of the coronary arteries in Camelus dromedarius. PMID- 3836601 TI - Embryological and ultrastructural aspects of embryoid bodies. PMID- 3836602 TI - Nutritional balance studies: evaluation of a premature infant formula. AB - A 24 kcal/oz (81 kcal/100 ml) premature infant formula (Enfamil Premature Formula) with moderately high mineral content (117 mg Ca/100 ml and 58 mg P/100 ml) and a protein content of 3 g/100 kcal was evaluated in sixteen 3-day balance studies at 10 and 21 days of age in nine premature infants with birth weights from 1,200 to 1,400 g. Growth rates were similar to in utero rates, and the formula was well accepted and tolerated. Calcium retention (62.5%) was similar to in utero accretion, and phosphorus retention was only slightly lower. Nitrogen retention was high without the development of metabolic acidosis or abnormal serum urea nitrogen levels. PMID- 3836603 TI - [Breast feeding practice and activities for its promotion in Central America, Panama and Dominican Republic]. AB - This paper summarizes the data presented by the representatives of Central America, Panama and the Dominican Republic at the II Regional Seminar on the Promotion of Breast-Feeding, held in Isla Contadora, Panama, April 25-29, 1983. The representatives of Costa Rica, Honduras and Panama provided up-to-date, representative data in regard to the breast-feeding practice. The average weaning age in the urban and rural areas of Costa Rica is 6 and 4 months, respectively. In Honduras and Panama, 43 and 17% of the infants from urban areas, and 21 and 37% of the babies from rural areas, respectively, were weaned before they reached four months of age. The need for availability of permanent systems to collect information on the breast-feeding practice in the different countries is pointed out. With regard to promotion actions, the absence of a national policy in favor of breast-feeding is evident. Moreover, in the national education systems, little importance is given to the subject. On the other hand, the advances achieved by some hospitals in favoring breast-feeding are mentioned. These include rooming in, the feeding of colostrum to newborns, and the establishment of human milk banks to feed premature babies whose mothers are unable to breast-feed them. Another acknowledged fact is that in the rural areas the agricultural home educators do not reinforce the breast-feeding practice. Also, there is a lack of information on the fulfillment of laws instituted for the protection of pregnant and lactating mothers, as far as pre and postnatal rest is concerned. PMID- 3836604 TI - [Iron absorption of the habitual diet in a population of low socioeconomic level]. AB - Iron absorption using the extrinsic double-tag method was determined in the habitual diet consumed by a group of 32 volunteers of both sexes, pertaining to the low socioeconomic strata. The diet was made up of bread, spaghetti, vegetables and meat, totalling 2,022 kcal, 65.0 g protein, 17.57 mg iron, and 28.75 mg ascorbic acid. According to our findings, men were found to be neither anemic nor iron-deficient. Among the women, however, 4.8% had anemia and 57.1% suffered from iron deficiency. The non-heme iron absorption was very low: 1.35% at breakfast, 3.29% at lunch, and 3.82% at dinner. Among those subjects found to be normal, the absorption was half the above figures, whereas among those with iron deficiency it was threefold, the differences being highly significant. The absorption of heme-iron for lunch and dinner was 17.53%. The iron deficient group had an absorption value four times greater than the normal group, the differences also being highly significant. The daily availability of non-heme, heme and total iron was 0.44, 1.13 and 1.57 mg, respectively. In the subjects who formed the normal group, total iron available was 1.14 mg, barely covering a man's daily requirements, but not those of a woman. In the iron-deficient group, it was 4.31 mg, that is, four times greater than in the normal group; while this value improves the balance, it does not prevent deficiency in women, with great blood losses. Bearing these results in mind, it is suggested that measures tending to improve dietary iron content and bio-availability, be enforced. PMID- 3836606 TI - [In vitro interaction of polyphenols of coffee pulp and some proteins]. AB - The in vitro interaction of pure polyphenols and polyphenol extracts of coffee pulp with pure proteins was studied. The polyphenols used for the assays were tannic acid, chlorogenic acid and catechin, and the proteins were gelatin, casein and bovine serum albumin (BSA). Different pHs and different polyphenol/protein ratios were used in the experiments. Extracts of coffee pulp in methanol, methanol-water (50:50), ammonium hydroxide 3%, and calcium hydroxide 1%, were used. In general, the maximum binding of polyphenol with protein was obtained at a polyphenol/protein ratio of 1/2, at a pH of 5.0. The higher binding percentages were found with the ammonium hydroxide extract and with tannic acid. The lowest binding percentage was obtained with the methanol-water extract. The other extracts presented intermediate binding degrees. The results herein reported demonstrate that the polyphenols of coffee pulp have capacity to bind proteins in vitro at the pHs assayed. This phenomenon may be the cause of the deficient protein utilization when coffee pulp is included in the animals' diet. PMID- 3836605 TI - [Effect of polyphenols of coffee pulp on iron absorption]. AB - The effect of the polyphenols of coffee pulp on iron absorption was studied using the method of ligated segments in rats. Optimal conditions to measure iron absorption, were determined using as criteria the concentration of Fe59 and the time that produced the highest value of blood radioactivity. A concentration of 0.4 uCi/dose of Fe59 and a 3-hr period were chosen to measure iron absorption. Experimental groups were formed assigning six rats randomly to each group. Each group was injected with a solution of 59Fe and either with the standard polyphenol solution or with the coffee pulp extract, except the control group which was injected with the Fe59 solution only. The effect of two polyphenol concentrations was also studied. Iron uptake from the duodenum was found to be the best indicator of iron absorption when compared to the sum of iron uptake by the tissues (blood, liver, spleen, kidneys, heart and carcass). Therefore, this indicator was used to interpret the results obtained. Catechin, tannic acid and the coffee pulp extract decreased significantly iron absorption when compared with the control group. The level of polyphenols used in these experiments is similar to the amounts consumed by animals fed coffee pulp at a 10% level. Therefore, we can conclude that the antinutritional effect of coffee pulp polyphenols may be partially due to their capacity to bind iron. PMID- 3836607 TI - [Development of a food of intermediate moistness from extracts of corn and soybean]. AB - Precooked cereal:oilseed blends have potential use as intermediate moisture food supplements. On this basis, some formulations from corn:soy extrudates, and other ingredients, were prepared and evaluated. The main objective of this work was to develop a prototype intermediate moisture vegetable food, stable at room temperature, of low cost, and inexpensive packaging requirements. The technological process involves thermal and enzymatic modification of corn and soy blends. The final product can be suspended in water and consumed as a high energy protein beverage. Its proximate composition is similar to that of sweetened condensed milk. PMID- 3836608 TI - Studies on the development of infant foods from plant protein sources. Part I. Effect of germination of chickpea (Cicer arietinum) on the nutritive value and digestibility of proteins. AB - For the purpose of developing an infant food of improved dispersibility characteristics and high nutritive quality, different treatments and technologies were applied to chickpea (Cicer arietinum). Samples were germinated for two and four days at room temperature (25 - 27 degrees C). One portion of each germinated chickpea sample was boiled for 40 min and the other portion was autoclaved at 15 psi for 15 min. These processed samples were then compared with the corresponding value of raw germinated and ungerminated samples as well as with the ungerminated processed ones for the following characteristics: chemical composition, contents of antiphysiological factors, solubility of proteins, lysine availability, net protein ratio (NPR), and digestibility of proteins. Germination caused an increase in the protein content of the seeds. No appreciable changes were observed in the trypsin inhibitor and tannin contents during germination. Availability of lysine was found slightly lower in the germinated seeds. The solubility of the nitrogenous constituents was markedly increased during germination. Along with processing, germination had no beneficial effect in improving protein quality, although digestibility of the proteins was increased. Boiling was more advantageous in the case of germinated seeds than autoclaving, whereas the reverse was true in the case of ungerminated seeds. PMID- 3836609 TI - Cooking procedures for direct consumption of whole soybeans. AB - The purpose of this research was to determine adequate conditions for the preparation of soybeans at home level. In accordance with the results, soaking the soybeans for eight hours in a 0.25% bicarbonate solution, gives the appropriate hydration to the soybeans, which can then be easily cooked. Boiling them at atmospheric pressure during 20 minutes was required to destroy 80% of the soybeans antitrypsin activity, and a high PER was also obtained. Nevertheless, the soybeans texture was not satisfactory; therefore, longer boiling periods were tested so as to establish the most suitable time needed to achieve a softness similar to that of common beans as usually consumed. Softness was measured instrumentally, and the optimal conditions found were: 40 min boiling after 8 hr soaking in a 0.25% bicarbonate solution. Under these conditions, the PER and NPU values increased 18% and 33%, respectively, with respect to those of the casein PER and NPU. It is concluded that with this procedure, large amounts of protein can become available at an equivalent price to US$0.40/kg ($80.00/kg). PMID- 3836610 TI - [Evaluation of a teaching program of nutrition in agronomy]. AB - The purpose of this study was to evaluate a set of teaching materials on food, nutrition and agriculture, adapted at the Institute of Nutrition and Food Technology (INTA), University of Chile, within the scope of a project with AID and the School of Agronomy of the Chilean Catholic University (U. C.) aimed at incorporating the teaching of human nutrition into the curriculum of Latin American agronomists. A one semester course (54 hours) was given to 22 students of the 7th semester of Agronomy and two Ecuatorian agronomists (with AID scholarships). A set of knowledge evaluation instruments was applied at the beginning and at the end of the course. A total of 83.3% of the students passed the final examination (with more than 75% of correct answers). The difference between the initial and final performance was highly significant (p less than 0.001). According to the students' and teachers' opinions, the general textbook and the teachers book contributed effectively to meet the learning objectives whereas the students handbook needed some modifications. In conclusion, the program is an important contribution to the education of agronomists in a new conception of their role in regard to improvement of the nutritional status and quality of life of the rural population. With a few minor modifications, a final version to be used in the countries of the Region, shall soon become available. PMID- 3836612 TI - [Role of percutaneous thin-needle biopsy in the diagnosis of neoplasms of the lung]. PMID- 3836611 TI - [Effect of S-carboxymethylcysteine on the concentration of antibiotics in bronchial secretions and its therapeutic effects]. PMID- 3836613 TI - [Evaluation of various lung physiopathology tests in subjects with chronic bronchitis before and after administration of salbutamol]. PMID- 3836614 TI - [Study of ventilatory function in children treated with the logico-corporeal method]. PMID- 3836615 TI - [Pulmonary radiographic picture of non-Hodgkin's lymphoma]. PMID- 3836616 TI - [The lung in cardiopathies]. PMID- 3836617 TI - [Evaluation of non-specific bronchial hyperreactivity in asthmatic patients by studying multiple ventilatory parameters]. PMID- 3836618 TI - [Cystic dilatation of the common bile duct in adults. Report of 4 cases]. AB - The authors report four cases of patients who presented congenital choledochal cysts. They discuss the incidence, classification, pathophysiology, diagnosis, clinical presentation and current treatment based in their own experiences and in a review of the literature on the subject. PMID- 3836619 TI - Esophageal dysfunction in patients with progressive systemic sclerosis and mixed connective tissue diseases. AB - Esophageal motility was studied in 37 patients with progressive systemic sclerosis (PSS), 12 patients with mixed connective tissue disease (MCTD) and 40 controls by the manometry method, using an open tube and continuous perfusion, and by radiological examination. Radiology was normal in 17 patients with PSS and five patients with MCTD, and abnormal in 15 patients with PSS and three with MCTD. The most frequent abnormality was slow transit time of barium. Manometry of the esophageal body was normal in 20 patients with PSS and six patients with MCTD, and abnormal in 17 patients with PSS and six with MCTD. Lack of contraction in the middle lower segments of the esophagus was the abnormality most frequently observed. Lower esophageal sphincter pressure was significantly lower among patients with PSS and MCTD than among the controls. Dysphagia was reported by ten patients with PSS and by six patients with MCTD. Radiology and manometry showed similar changes in PSS and MCTD, but dysphagia was more frequent among patients with MCTD. PMID- 3836620 TI - [Gastric adenocarcinoma with choriocarcinomatous component. A case of autopsy with immunohistochemical study]. AB - The authors present a rare autopsy case of coexistence of adenocarcinoma and choriocarcinoma in stomach. The tumor was characterized histologically and by the detection of carcinoembryonic antigen and human chorionic gonadotropin in the neoplastic cells by immunoperoxidase technique. The prognosis for gastric adenocarcinoma with choriocarcinomatous elements is exceedingly poor. This patient died three months after the first complain. PMID- 3836621 TI - [Embolization--a new concept in the treatment of esophageal varices (late results)]. AB - Although since 1978 we have been applying this new technique, we awaited the late results to evaluate with security the value of its application. As we have previously described in a short communication, in 1979, to embolizate the esophageal bleeding varices, we use a laparotomic approach through the right gastric vein to inject the embolizating material. After five years applying this technique, the results confirmed its efficacy. PMID- 3836622 TI - [Experimental dilatation of the cecum and colon in rats. I. Induction by continuous administration of lactose after weaning]. AB - Female weanling Wistar rats, weighing 30-40 g, were allocated into seven groups (I, II, III, IV, V, VI and VII), and given laboratory rat chow containing ascending concentrations of lactose (subgroup L) and sucrose (subgroup S); each group was administered respectively 0, 5, 10, 20, 25, 30 and 35 g of disaccharide per 100 g final weight of diet. The animals were maintained in these diets for 28 days, when they were weighed and sacrificed. The volume of the large intestine was measured, and the weight of cecum and colon were recorded separately. The values were expressed in cm3/100 g of body weight (volume) and g/100 g of body weight (weight of cecum and colon). The results showed that rats given lactose, except group II (L) showed enlargement of the cecum and colon, as revealed by increased volume and weight, proportionally to the concentration of sugar. This increase was more pronounced in the cecum, while the participation of the colon occurred significantly only with high concentrations of lactose (groups VI (L) and VII (L)). Groups V (L), VI (L) and VII (L) showed very low body weights at the end of the experiment and high mortality rates of respectively 37.5, 50 and 80%. It is postulated that the enlargement of the cecum and colon of rats given lactose is probably related to augmented work due to increased fecal flow through the ileo-cecal valve and/or changes in bacterial flora and fermentation. Besides, the low body weight and the high mortality rate of lactose-fed rats may be dependent on the chronic diarrhea observed in these animals. PMID- 3836623 TI - Effects of protein deficiency and rehabilitation on growth and tissue composition in growing rats. AB - The objective of the present work was to study the influence of protein quantity and quality on some biochemical parameters in the liver, brain and plasma of rats at 51 days of age. This profile was sketched through the weight of the liver and brain and their content of DNA, RNA and protein and through the total amount of protein, the ratio NE/E and the activity of transaminase GOT and GPT in the plasma. During gestation and lactation, diets of 20% casein, 8% casein and 8% corn were used. At weaning, five experimental groups, with and without nutritional recuperation, were established. As a result, it was observed that the groups fed on a hypoprotein diet (8% casein or 8% corn) were the most seriously compromised in body weight and biochemical parameters with the group fed on corn being the most seriously affected. The animal which were recuperated nutritionally presented a net improvement in all of the parameters. However, the values describing the development of the body and organs in these groups remained inferior to those obtained in the control group. The success of reversibility will depend on the phase of development during which malnutrition occurred and the duration and intensity of the original deficit and the subsequent rehabilitation treatment. Organs in a phase of accelerated development will be especially sensitive to the irreversible effects of malnutrition. PMID- 3836624 TI - [Clinical conference at the Brazilian Institute for Study and Research in Gastroenterology]. PMID- 3836626 TI - International Symposium on Head and Neck Surgery, Tokyo '85. PMID- 3836625 TI - [Exercises of clinical reasoning]. PMID- 3836627 TI - Reconstruction of the defect of the oropharynx using free jejunum. AB - Reconstruction of oropharyngeal defect using free jejunum was carried out in two patients with selected situation. One patient had problem of donor site, which was developed breast. Another patient had problem of recipient site, which required the flap with thin subcutaneous tissue. Reconstruction with free jejunal transfer was successful in both cases. The major advantage of the free jejunal transfer for oropharyngeal defects was discussed in comparison with cutaneous flaps. In conclusion this safety procedure is recommended for reconstruction of oropharyngeal defect. PMID- 3836628 TI - Use of intraoperative 125iodine implants for large tumors attached to the carotid artery. AB - Twenty-nine patients with large masses attached to the carotid artery underwent surgical resection with preservation of the artery, and intraoperative 125Iodine implantation via an absorbable suture. Eighteen were treated for recurrent neoplasms, having failed prior surgery and/or irradiation therapy. Eleven were treated primarily. With the minimum follow-up of one year, 76% were disease free in the implant volume and 62% were disease free in the entire neck. Distant metastasis occurred in 45%. Mean survival was 15 months in the primary group (range, 2-50 months) and 12 months in the recurrent group (range, 4-26 months). This technique shows promise in providing local control without necessity for sacrifice of the carotid artery. PMID- 3836629 TI - The management of salivary neoplasms: an overview. AB - From 1939 through 1973, 2,807 patients with salivary gland tumors received definitive treatment at the Memorial Sloan Kettering Cancer Center. This included 1,965 patients (70%) with parotid gland lesions, 244 patients (8%) with neoplasms in the submandibular gland, and 607 patients (22%) with tumors which arose in the predominantly mucus secreting glands (minor salivary) which line the upper aerodigestive tract. The proportion with malignant tumors was 25, 43, and 82% in the parotid, submandibular and minor salivary glands, respectively; benign tumors occurred more often in women. Mucoepidermoid, acinic cell and most adenocarcinomas were subdivided according to histologic grade and all patients were retrospectively staged according to criteria established by the American Joint Committee on Cancer Staging. Treatment was almost exclusively surgical and the extent of the operation performed depended on the extent of the tumor rather than its histology. In patients with malignant parotid tumors, the facial nerve was sacrificed only if it was adherent to or directly involved by the tumor. Lymphadenectomy was usually reserved for those patients who had palpable metastases. Prolonged follow-up (10 years minimum in this study) is necessary in order to appreciate the slow growth of some salivary neoplasms. Results depended upon the complex interplay between the site of origin, the clinical stage, and the histologic appearance of the tumors. This study antedates our current interest in postoperative radiation therapy, but other reports suggest that combination therapy enhances local control. PMID- 3836631 TI - Plastic and reconstructive treatment of facial skin lesions. PMID- 3836630 TI - A proposal of TNM classification system for cancer of the salivary gland- comprehensive retrospective study. AB - Until recently, there has not been a sufficient number of cases of salivary gland cancer to permit the development of a clinically useful TNM classification system. A comprehensive retrospective study of 354 patients with cancer of the parotid gland from 46 institutions in Japan was carried out at the request of the Japanese Committee on TNM Classification (JJC), and we propose JJC T-categories for parotid gland cancer. The characteristic of this proposal involves T categories determined according to tumor size. Fixed tumors or tumors with facial nerve involvement were classified as T4 regardless of tumor size. In 1983, the AJC proposal for a TNM classification system of salivary gland cancers was tentatively approved at a AJC/UICC joint meeting. In comparison with the AJC classification, our proposal seems to be better in terms of simplicity and the balanced distribution in T-categories of parotid gland cancers. PMID- 3836632 TI - Pectoralis flap reconstruction in resection of anterior skull base tumors. AB - Prognosis was once considered hopeless for many patients with malignant neoplasms of the anterior skull base. Craniofacial resection of these lesions has now been found curative for many patients. However, massive resections of the anterior skull base pose many potentially life-threatening complications. Cerebrospinal fluid fistula with meningitis is especially troublesome when previous radiation therapy compromises wound healing. In such circumstances local tissue flaps and skin grafting may not provide reliable separation of the brain from the nose. The pectoralis major myocutaneous flap was utilized in nine patients undergoing antero-lateral resection of the skull base. Several major advantages of this technique include: Reliable closure of the subarachnoid space. Acceptable cosmesis. Rapid wound rehabilitation, allowing early postoperative radiation therapy when necessary. PMID- 3836633 TI - Analysis of the long-term results of our combination therapy for maxillary cancer, with particular reference to treatment of T4 and N1-3 maxillary cancer. AB - To evaluate how far the long-term survival rate could be improved by maximum combination of chemotherapy, radiotherapy, and surgery, we have performed a trial combination therapy consisting of Linac X-ray irradiation (200 rads X 30) and intraarterial infusion chemotherapy (5-fluorouracil 250 mg X 15), followed by sufficiently extensive maxillectomy and primary reconstruction. The 5-year crude and relative survival rate of 70 patients were 64.2 and 72.1% respectively. The 5 year crude survival rate in cases with squamous cell carcinoma was 73.1%. Twelve out of 70 patients died of cancer. Local recurrence was seen in 6 cases and the most frequent cause of death was distant metastasis which was seen in 25% of T4N0 cases and in 57% of T2-3N1-3 cases. The elderly patients over 71 years occupied 29.1% of the total cases. The 3-year and 5-year crude survival rates in these elderly patients were 75 and 50% respectively. Death due to cancer was seen only in 3 patients and the most frequent cause of death was due to senility and other unrelated causes. As far as squamous cell carcinoma is concerned, the post therapeutic courses of our combination therapy have been satisfactory. However further revision of the trial therapy was deemed necessary in T4 and N1-3 maxillary cancer. By covering the entire wound surface after total and extended total maxillectomy by a thick flap, the post-operative facial deformity and functional impairment due to scar contracture of the wound could be effectively prevented.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836634 TI - Fifteen years experience with treatment of lingual carcinoma--a retrospective study. PMID- 3836635 TI - Reconstruction of the total cheek defect by free myocutaneous flap. AB - Our reconstructive method utilizing the free latissimus dorsi myocutaneous flap by microneurovascular anastomosis is a rewarding method for the patient with total cheek defect after cancer surgery of the maxillary sinus from the standpoint of morphology, function, and psychology. PMID- 3836636 TI - Aspects on laryngeal cancer based on whole organ sections. AB - Whole organ sectioning of laryngectomy specimens has been applied since quite a few years to increase our knowledge of the histopathological behavior of laryngeal carcinoma. The laboratory techniques have been successively refined with shortening of the processing time and with improved histological results. The larynx may be cut in the coronal, sagittal or in the transverse plane, which has become more actual for comparison between computed tomograms and histopathological findings. The growth and spread of laryngeal cancer is determined by the site of origin. Glottic carcinomas often invade the thyroid cartilage in the anterior commissure area and extend outside the larynx through cartilage or by extending subglottically and then through the crico-thyroid membrane. More extensive glottic carcinomas with supra- and/or subglottic extension may spread laterally through the crico-thyroid space. This way of spread is very characteristic for tumors surrounding the laryngeal ventricle- "transglottic carcinomas." Supraglottic carcinomas show a high tendency to invade the pre-epiglottic space. Despite an advanced size they tend to be confined to the supraglottic region, but may especially when ulcerated extend down to the glottic region in the anterior midline. Primary subglottic carcinomas are rare but tend to be advanced when diagnosed, having a circumferential growth with extension up into the vocal cord muscles. They may invade the laryngeal framework and spread outside the larynx through the crico-thyroid membrane. By using the whole organ sectioning technique we have gained further knowledge of the strength and weaknesses of our clinical and radiological diagnostic methods and we have a possibility to compare the radiographic findings with the histopathological sections.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836637 TI - A histopathological study of carcinoma of the larynx. AB - Fifty-one laryngectomy specimens were histopathologically studied in serial sections. The incidence of thyroid cartilage invasion was 10% in supraglottic, 48% in glottic, and 67% in subglottic carcinomas. The incidence of cricoid cartilage invasion was 0% in supraglottic, 22% in glottic, and 33% in subglottic carcinomas. The sites of cartilage invasion were the anterior commissure portion and an ossified lower portion of the thyroid cartilage, and an ossified upper portion of the cricoid cartilage. Fixation of the vocal fold in glottic carcinoma was accounted for by carcinomatous invasion into three-fourths or more of the thyroarytenoid muscle. Impairment of the vocal fold movement was accounted for by carcinomatous invasion into three-fourths or less of the thyroarytenoid muscle. Fixation of the vocal fold in supraglottic carcinomas was accounted for by a massive carcinomatous invasion around the upper aspect of the arytenoid cartilage. PMID- 3836638 TI - Application of CO2 laser to the carcinoma of the larynx. PMID- 3836639 TI - The place of partial laryngectomy in the treatment of laryngeal cancer--a view from the U.K. AB - Attention is drawn to the problems of surgical resection by partial laryngectomy after full therapeutic dosage of Telecobalt irradiation. Material is presented from two treatment centres to indicate trends in surgical treatment and the complications experienced. Results will be given which confirm a reasonable expectation of cure and functional conservation by vertical partial laryngectomy for recurrence of glottic cancer after irradiation. The results of treatment of recurrent supraglottic cancer by horizontal partial laryngectomy gave more cause for concern in terms of complications and survival. In conclusion an attempt is made, based on the quoted experience, to define the position of conservation surgery in two centres for laryngeal cancer in the United Kingdom. PMID- 3836640 TI - Significance of the use of endoscopes in the management of head and neck tumors. AB - The advancement of the endoscope and its related technology has made it easy to apply them to the management of head and neck tumors at the level of the everyday clinic not only in the diagnostic aspect but also for therapeutic purposes. In the diagnostic aspect, endoscopic procedure will contribute to early diagnosis, precise comprehension of extension, and appropriate biopsy of tumors. Accurate follow-up study and laser surgical procedures using Nd-YAG laser may be other therapeutic contributions. X-ray examinations including CT should always be complementary measures to this procedure. It is extremely important to detect earlier the presence of malignancy. The appropriate use of endoscopes in the management of head and neck tumors will help to improve the results of treatment, because one of the greatest reasons for poor prognosis in nasopharyngeal, hypopharyngeal, cervical esophageal, ethmoidal, and sphenoidal cancers is attributed to the difficulty of early detection. PMID- 3836641 TI - Laryngoplasty using suprahyoid muscles--hyoid transposition laryngoplasty. AB - A new technique of laryngoplasty using the function of the suprahyoid muscles (hyoid transposition laryngoplasty) was reported. Total laryngectomy is carried out as usual and the tracheal stump is anastomosed directly to the hypopharynx. The hyoid bone is cut medially, then transpositioned and sutured to the posterolateral margins of the tracheal stump. With this procedure, the new glottis is pressed strongly to the tongue base during swallowing and aspiration is avoided. Postoperative swallowing and speech in the cases operated on with this method were satisfactory, and even nasal respiration was possible in some cases. PMID- 3836642 TI - Primary tracheoesophageal shunt operation for postlaryngectomy voice restoration- a sphincter mechanism against aspiration. AB - Out of a total of 113 consecutive tracheoesophageal (TE) shunt operations for postlaryngectomy voice restoration in the past 8 years performed at the Department of Otorhinolaryngology, 92 patients (81%) succeeded in the postoperative TE speech. The essential part of this surgery consists of the construction of the TE shunt using the membraneous part of the trachea obtained at surgery. In the course of 8 years, important changes have been employed for the prevention of aspiration. We attempted to combine primary cancer surgery with the creation of intelligible voice, but without aspiration. For the above purpose, we have employed the bilateral esophageal muscle flaps (BEMF) against aspiration in combination with the TE shunt construction for phonation. Sixteen of 18 patients thus operated on complained of no aspiration even with a drop of saliva and dietary fluids. As far as the mechanism against aspiration is concerned, both dilatation and elevation of the cervical esophagus during deglutition, together with the BEMF, seem to approximate the sphincter mechanism against tracheal reflux. A proper case selection may achieve high success rates for preserving normal deglutition and restoring speech after total laryngectomy. PMID- 3836643 TI - Pharyngeal reconstruction after total laryngectomy with preservation of phonation. AB - The goal of pharyngeal reconstruction after laryngectomy is to prevent fistulization and to permit rapid resumption of satisfactory deglutition. Alaryngeal speech acquisition by the traditional method of esophageal speech is effective if insufflation is rapidly learned and tolerated by the pharyngoesophageal segment. Experience with tracheoesophageal phonation revealed an incidence of pharyngoesophageal spasm in 40% of an esophageal speech failure population which prevented useful air flow for speech production. This is related to esophageal distention and reflexive upper esophageal sphincter hypertension. It is suggested that pharyngeal reconstruction after total laryngectomy may permit higher wall tension than is desirable for speech acquisition. The problem of post laryngectomy pharyngoesophageal spasm may be reduced by myotomy of the pharyngeal constrictors with resultant higher air flows in the residual vocal tract for speech. Alterations in the pharyngeal wall tonicity will affect the pitch of the speech and listener acceptability. Recently identification and division of the pharyngeal plexus has produced a similar result in improved phonatory air flows with subjective vocal pitch approximating more normal voices. The above mentioned techniques are readily applied to the laryngectomy procedure and enhance the likelihood of alaryngeal speech acquisition. PMID- 3836644 TI - An evaluation of neck dissection in carcinoma of the tongue. AB - Forty-six neck dissection cases were performed out of 117 cases of tongue cancer occurring from 1973-1981 at the Gunma Cancer Center. Among the 47 cases, 27 were initially treated surgically. In 14 cases radium therapy was used for the primary lesion and was followed by neck dissection. In another 13 cases hemiglossectomy and neck dissection were performed together. In addition, in 19 cases neck dissection was performed as secondary treatment for metastatic nodes or for recurrence of the primary lesion following radium therapy. In the cases of neck dissection performed as initial treatment along with hemiglossectomy, 84.6% had a two-year survival rate. Neck dissection performed as a secondary treatment resulted in a 46.7% survival rate over 3 years. It is evident from these figures that neck dissection performed as initial treatment results in better prognosis for the patients. In cases where metastatic nodes are present or suspected, neck dissection and hemiglossectomy should be undertaken. PMID- 3836645 TI - Functional reconstruction for unilateral recurrent laryngeal nerve paralysis caused by thyroid cancer. AB - Surgery for unilateral recurrent laryngeal nerve paralysis, which is caused by thyroid cancer, appearing within the past six months, should be aimed at improvement of the asymmetrical vocal cord and preservation of the stiffness and the mass of the vocal fold. To accomplish these aims, reconstructive surgery of the neuromuscular systems is available and it should be performed at the same time as thyroidectomy. Our surgical procedures for unilateral recurrent laryngeal nerve paralysis caused by thyroid cancer are reported along with some experimental investigations in dogs. Experimentally, muscle atrophy was prevented by neurorrhaphy or by free nerve grafting of the recurrent laryngeal nerve, although movement of the vocals cord was not recovered due to misdirected reinnervation and reduction of the end plates. In our study of functional reconstruction for unilateral recurrent laryngeal nerve paralysis, end-to-end anastomosis or free nerve grafting between the recurrent laryngeal nerve after extirpating the abductor muscle branch of this nerve was the most effective and practical method for improvement of the adductor function. Clinically reconstructive surgery was performed on five females suffering from thyroid cancer with unilateral recurrent laryngeal nerve paralysis. The abductor branch was cut selectively in four cases, followed by free nerve grafting of the ansa cervicalis and pedicle nerve muscle graft of the thyrohyoid muscle implanted in one case. Vocal cord atrophies were not observed and phonations were good in all cases six months after of operation. However, obvious adduction of the operated vocal fold at phonation was obtained only in two cases and other two cases showed slight adduction. PMID- 3836646 TI - Laryngeal framework surgery for voice disorders. PMID- 3836647 TI - Synergistic combination therapy of 5-fluorouracil, vitamin A, and cobalt-60 radiation for head and neck tumors--antitumor combination therapy with vitamin A. AB - Using cultured transformed fibroblasts, an antitumor agent, 5-fluorouracil (5 FU), was found to be potentiated in its inhibitory action on RNA formation by vitamin A. 5-FU in combination with vitamin A enhanced more effectively the cellular sensitivity to irradiation than when 5-FU was used alone. So we have applied a triple combination of 5-FU, vitamin A, and cobalt-60 radiation (FAR therapy) to clinical treatment of head and neck tumors since 1972. The treatment of 192 patients with cancer of the larynx, 60 patients with hypopharyngeal and cervical esophageal cancer, and 23 patients with epipharyngeal cancer with FAR therapy during 6 years from 1972 to 1977 resulted in highly effective synergism, and the improved points of this therapy were considered. PMID- 3836648 TI - Reconstructive surgery of head and neck cancer using various pedicle flaps. AB - Various pedicle flaps were used for the reconstruction of large defects following extirpation of head and neck malignant tumors of 55 patients. Although there are several complications, myocutaneous (MC) island flap surpassed the deltopectoral (DP) flap in the reconstruction of the pharyngo-esophagus, tongue, oral cavity, mandible, and of a massive defect. However, DP flap is still valuable material because of its steadiness in pharyngo-esophageal reconstruction in patients who have background disorders, such as serious heart disease and diabetes. Forehead or DP flap is valuable in the reconstructive surgery of full-thickness defect of the cheek. Reconstruction of extremely large defect of the head and neck could be accomplished by use of latissimus dorsi flap and/or combination with DP flap. Selection of the flap should be made in accordance with the region of the reconstruction, size of region, sex, and individual considerations. PMID- 3836649 TI - Multiple primary tumors in patients with head and neck cancer. AB - From July 1978 to June 1984, 851 new cases of malignancies in the head and neck were registered in our hospital. Ninety-three patients with multiple primary tumors were observed. Triplicated malignancies were observed in three cases, i.e., larynx, thyroid, skin; stomach, tongue, larynx; and larynx, sarcoma, mesopharynx. The incidence rate was a high 30% in cancer of the mesopharynx (14/46), 14% in cancer of the larynx (55/392), and 7% in cancer of the hypopharynx. Additional primary malignancies occurred in the head and neck regions (25 cases), the digestive system (10 cases), the uro-reproductive system (18 cases), and others. Cancers of the stomach, lung, esophagus, and thyroid were predominant. Thirty-one cases (32.2%) were detected simultaneously and others were detected synchronously. We discuss the increased incidence rate of multiple primary tumors and the factors attributable to multiple primary tumors and stress the usefulness of systematic investigations. PMID- 3836650 TI - Excision level and indication for contralateral neck dissection in hypopharyngeal cancer surgery. AB - Margins of extirpated specimens of hypopharyngeal cancer were examined histopathologically. Residual cancer nest, which is most likely due to directional preponderance of the submucosal lymph flow of the hypopharyngeal cavity, was characteristically demonstrated at the superior margin and in the submucosal layer. We propose that laryngopharyngectomy be done at the extended excision level superiorly at the base of the palatine tonsil and inferiorly at the level of the 2nd thoracic vertebra and with a safety margin of at least 2 cm. The incidence of ipsilateral and contralateral neck metastasis was also histopathologically evaluated from specimens obtained by neck dissection. Contralateral neck metastasis was histopathologically confirmed in more than 30% of the cases examined and showed a difference in incidence related to histological differentiation and T classification. We conclude that bilateral neck dissection is advisable in all cases of hypopharyngeal cancer except for patients with a well-differentiated T2 lesion. PMID- 3836651 TI - Total pharyngo-laryngo-esophagectomy and reconstruction by gastric or colic pull up. PMID- 3836652 TI - Radial forearm flap in reconstruction following surgery for head and neck cancers. AB - The forearm flap developed in China provided a most useful addition to the field of head and neck reconstruction. Because of its thin and pliable components, long and large caliber pedicle vessels and reliable vascularity, etc., we prefer to use the microvascular transfer of this flap for reconstruction of oral, oropharyngeal, and hypopharyngeal regions following cancer ablation and recognize further evidence of the versatility of this flap. In this paper, we describe the techniques of forearm flap transfer and the results of 37 cases experienced between March, 1983 and October, 1984. PMID- 3836653 TI - Voice preservation technique in the surgical treatment of postcricoid cancer. AB - In patients with freedom from invasion to anterior half of the larynx in postcricoid and cervical esophageal cancer, reconstruction of vocal tract with preservation of the anterior half of the larynx is applied with oncologic rationality and we performed the procedure in three cases of T2N1. At neck dissection bilateral superior thyroid neurovascular pedicles and unilateral inferior thyroid vessels were preserved. The larynx and upper part of the trachea were devided on the frontal plane and the posterior half with the hypopharynx and cervical esophagus was removed. The anterior half of the part was preserved and the mucosal edges of the cut surface extending from the appropriate margin of membranous portion of the trachea to the aryepiglottic folds were longitudinally approximated to reconstruct a thin tube to rehabilitate the voice. The pharyngoesophagus was replaced by either deltopectoral flap or forearm flap. Postoperative aspiration was minimal and voice rehabilitation was satisfactory. PMID- 3836654 TI - Surgery for squamous cell carcinoma of the tongue and floor of the mouth. AB - Surgery for cancer of the tongue and floor of the mouth has become more varied and generally more conservative, influenced by advances in oncology and modern reconstructive methods. Combined therapy is favored, with postoperative irradiation and sometimes adjunctive chemotherapy, using cis-platinum. T1 carcinomas of the tongue and floor of the mouth can be treated with either wide local excision or irradiation alone, but surgery is the preferred method. T2-T4 tumors treated by resection combined with radiation therapy promise the best results. The indications and principles of the most important operative procedures are discussed: local excision; partial and total glossectomy; excision of the floor of the mouth with marginal mandibular resection; composite resection. Mandible sparing operations such as a modification of the "pull through" technique described by Stell or temporary splitting of the mandible are oncologically safe in many cases. A radical neck dissection is indicated in each carcinoma of the tongue or floor of the mouth with palpable lymph nodes. If no nodes are palpable, an elective neck dissection appears justified in view of the high frequency of clinically occult lymph node metastases. Reconstructive measures following radical tongue and floor of the mouth operations are required for regaining mobility of the remaining tongue, for reconstruction of the floor of the mouth and for replacement of the mandible. For immediate reconstruction, the most frequently used technique is the pectoralis major myocutaneous flap which has largely replaced the previously employed local and regional flaps. A significant problem remains with mandibular reconstruction. PMID- 3836655 TI - Peripharyngeal space invasion of head and neck cancer--incidence, mechanisms, and management. AB - We studied the incidence and mode of development of peripharyngeal invasion from head and neck cancers by both retrospective examination of our 127 patients and tracing the dynamics of lymph flow from the hypopharyngeal wall to the peripharyngeal space. We also presented three experiences of the surgical approach to the peripharyngeal invasion by our modification of Attia's technique. Peripharyngeal space invasions occur frequently in a direct or indirect way when meso- or hypopharyngeal or posterior oral cancer invades deeply into the muscle layers and extends to the palatine arch, retromolar region, pharyngoepiglottic fold, pharyngeal tongue, or posterior buccal mucosa. The lymph flow was revealed to move quickly from the lateral hypopharyngeal wall to the base of the skull and occasionally to the opposite side. The peripharyngeal space invasions were successfully removed under a wide surgical field without injuring the important nerves and vessels and with preservation of mandibular function. We should cover all routes for extension of head and neck cancers, including the peripharyngeal space, in the diagnosis and management of these conditions. PMID- 3836656 TI - Dissection of parapharyngeal space in head and neck cancer. AB - The parapharyngeal space is a potential space located lateral to the upper pharynx and tonsillar area. This space can be involved either by direct extension, by perineural or neural spread, or by lymph node metastasis from cancers originating in adjacent sites. Between 1978 and 1984, 22 patients with T3 or T4 carcinoma of the head and neck region underwent dissection of the parapharyngeal space in conjunction with ablation of the primary tumor and standard radical neck dissection. Twelve of these patients had carcinoma arising in the oral cavity, 4 in the oropharynx, and 6 in the major salivary glands. Surgical approaches applied to the dissection of the space were the submandibular route combined with the transoral approach in 1 patient, transparotid in 3, the mandibular "swing" approach in 9, and mandibular composite resection in 9. The last 2 approaches allowed excellent control of the neurovascular structures up to their entrance into the skull base. In 18 patients of this series, the tumor was locoregionally controlled in 5 to 77 months (median 23 months) of follow-up. Dissection of the parapharyngeal space improves locoregional control rate of advanced head and neck cancers involving this space. PMID- 3836657 TI - Mediastinal dissection--resectability and curability of stomal recurrence after total laryngectomy. PMID- 3836658 TI - Evaluation of prophylactic postoperative 131I therapy for extended differentiated carcinoma of the thyroid gland. AB - Varying survival rates have been reported for differentiated carcinoma of the thyroid gland. The rate, however, does progressively decrease over a longer period of time than the usually reported five-year survival rates. Significant local invasion outside the thyroid capsule and of blood vessels yields a poorer prognosis, and mortality is largely attributed to distant metastasis. To improve the long-term survival rate, 1) sharp dissection with ample safety margin including resection of the neighboring organs, 2) reconstruction of the sacrificed organs, if possible, and 3) postoperative prophylactic radioiodine therapy, were adopted for invasive well-differentiated carcinoma for a period of 10 years. Of the 191 well-differentiated carcinomas operated on, in a series of 486 consecutive thyroid operations, 33 patients underwent this prophylactic radioactive iodine therapy (dose amount up to 300 mCi) following ablative surgery including, in several patients, mediastinal dissection. Periodical whole body survey by sodium iodide 131I showing no signs of recurrence up to five years except in three patients indicating two suspected lung metastasis and one death from bone metastasis, demonstrated that this is a promising method for the treatment of invasive well-differentiated carcinoma of the thyroid gland, although further long-term analysis is required. PMID- 3836659 TI - A combined modality for anaplastic large-cell carcinoma of the thyroid. AB - The survival rates of 55 patients with anaplastic large-cell carcinoma of the thyroid with various combinations of treatment were analyzed to estimate the most effective way to cure the disease. A total of 21 patients with infiltration into subclavial vessels, plexus brachialis, vagus, sympathics, phrenic nerve, and/or hypoglossus died within 7 months after the diagnosis and most of them died within 2 months. The prognosis of patients with such tumor infiltration was very poor. Among 34 patients without infiltration of the above-mentioned structures, 12 were treated by radiation therapy alone or with chemotherapy, 8 were treated by surgery plus radiation therapy, and 13 were treated by a combination treatment consisting of operation, radiation, and chemotherapy. The post-therapeutic one year survival rates were 7.7, 12.5, and 75%, respectively. Therefore, it is concluded that a combination treatment of surgical operation and radiotherapy plus chemotherapy should be the best for treatment of this tumor. PMID- 3836660 TI - Reconstruction of the upper airway following stenotic processes. PMID- 3836661 TI - Surgical treatment of laryngotracheal stenosis by a trough technique. AB - Many methods have been tried and reported in the treatment of laryngotracheal stenosis. Among them, a trough technique seems universal at present. To date, we have tried several methods of this technique, but each method had its own demerits. We used, as a cartilagenous framework, a homograft or tracheal ring cartilages for the last four cases of laryngotracheal stenosis. These tracheal ring cartilages were resected from relatively young patients with laryngeal carcinoma. Total laryngectomy was done just below the level of the fourth tracheal ring, then the fourth tracheal ring was resected and stored in 70% alcohol. The cartilage was used after it was made certain pathologically that there was no invasion of carcinoma at the third tracheal ring level. The operative procedure of this trough technique is as follows. In the first stage, a trough is created at the stenosed region and the trough is maintained by placing a Quick Set Silicone (Q.S.S.) stent mold over it. While waiting for scar formation of the tissues surrounding the trachea, the second stage reconstruction is performed four weeks after the first. The trough is closed with hinged skin flaps on both sides, and the reserved tracheal ring cartilages are sutured every 5 mm onto the outer surface of the hinged skin flaps to make a cartilagenous framework. The neck is closed with advanced neck skin flaps. A more ideal tracheal lumen is created by this technique. Our four patients are doing well two years or more after the operation. PMID- 3836662 TI - Anterior neck dissection for carcinoma of the thyroid gland. AB - Anterior neck dissection, a regional neck dissection in which the internal jugular chain of nodes is dissected completely but the posterior triangle is left undisturbed, has been developed by us. Metastases of carcinoma of the thyroid to cervical lymph nodes were studied clinically and pathologically in 54 patients who had undergone therapeutic total neck dissections in order to determine selection guidelines for anterior neck dissections. If the 7 patients in whom nodes in the posterior triangle of the neck were palpable preoperatively were eliminated, there were 47 evaluable patients for this portion of the study. Nine (19%) of the 47 patients had nonpalpable but histologically positive nodes in the posterior triangle. If these patients were divided into 4 groups, I, II, III, and IV in which the number of palpable nodes in each was 1, 2, 3, and 4 or more, respectively, the incidence of microscopically positive nodes in each group was 1/20 (5%), 2/11 (18%), 2/8 (25%), and 4/8 (50%), respectively. Twenty-one evaluable anterior neck dissections were performed and followed from 4 to 9 years postoperatively. In 18 patients, there was a single palpable node and in 3 patients, there were 2 palpable nodes. No nodal recurrence has occurred in the necks with a single palpable node, but there has been one recurrence in the group with 2 palpable nodes. We conclude that anterior neck dissection is beneficial to patients with a single palpable node in carcinoma of the thyroid in reducing cosmetic disfigurement and preserving function. PMID- 3836663 TI - Correlation between prognosis and degree of lymph node involvement in carcinoma of the head and neck. AB - The purpose of this report is to discover the correlation between the prognosis and the degree of lymph node involvement in carcinoma of the head and neck. Three hundred and thirty-eight cases of head and neck carcinoma who had undergone neck dissection at the National Cancer Center Hospital from 1962 through 1979 were reviewed and analyzed. The sites of the primary lesions were the oral cavity, larynx, and hypopharynx. Radical whole neck dissection had been performed in 177 cases, partial neck dissection in 97 cases, and bilateral neck dissection in 60 cases. The cervical lymph node metastases from oral cavity carcinoma were mostly confined to L1 and rare in L4 (L-classification by UICC). The prognosis of L4 cases was extremely poor, and thus oral carcinoma cases could be spared posterolateral dissection. The control rate of neck lymph nodes by neck dissection and the prognosis of the patients were influenced by the existence and number of histologically positive nodes. The cervical recurrence rates were 28% of all cases, 11% of histologically negative cases, and 39% of histologically positive cases. Recurrences in the dissected part of the neck were observed in 10% of all cases. The five-year survival rates were 75% of the cases without histologically positive nodes, 35% with histologically positive nodes, 59% with single node metastasis, and 26% with multiple node metastasis. PMID- 3836664 TI - CT scan as a diagnostic tool to detect cancer invasion in the carotid artery. AB - The presence of cervical lymph node metastasis in head and neck tumors is usually determined by manual neck palpitation. However, this method cannot ascertain whether carotid artery invasion is present or not. Actually, fixed lymph node metastasis means nothing but deep fascia invasion of the metastasis. Contrast CT scan, on the contrary, can present exact information about the carotid artery. We investigate the comparison between CT scan results and surgical results in this paper. PMID- 3836665 TI - Numerical calculation and measurement of 60-Hz current densities induced in an upright grounded cylinder. AB - Power-frequency electric fields are strongly perturbed in the vicinity of human beings and experimental animals. As a consequence, the extrapolation of biological data from laboratory animals to human-exposure situations cannot use the unperturbed exposure field strength as a common exposure parameter. Rather, comparisons between species must be based on the actual electric fields at the outer surfaces of and inside the bodies of the subjects. Experimental data have been published on surface and internal fields for a few exposure situations, but it is not feasible to characterize experimentally more than a small fraction of the diverse types of exposures which occur in the laboratory and in the field. A predictive numerical model is needed, one whose predictions have been verified in situations where experimental data are available, and one whose results can be used with confidence in new exposure situations. This paper describes a numerical technique which can be used to develop such a model, and it carries out this development for a test case, that of a homogeneous right-circular cylinder resting upright on-end on a ground plane and exposed to a vertical, uniform, 60 Hz electric field. The accuracy of the model is tested by comparing short-circuit currents and induced current densities predicted by it to measured values: Agreement is good. PMID- 3836666 TI - Thermoregulatory adjustments in squirrel monkeys exposed to microwaves at high power densities. AB - The present study was undertaken to investigate the thermal adjustments of squirrel monkeys exposed in a cold environment to relatively high energy levels of microwave fields. The animals (Saimiri sciureus) were equilibrated for 90 min to a cool environment (Ta = 20 degrees C) to elevate metabolic heat production (M). They were then exposed for brief (10-min) or long (30-min) periods to 2,450 MHz continuous-wave microwaves. Power densities (MPD) were 10, 14, 19, and 25 mW/cm2 during brief exposures and 30, 35, 40, and 45 mW/cm2 during long exposures (rate of energy absorption: SAR = 0.15 [W/kg]/[mW/cm2]). Individual exposures were separated by enough time to allow physiological variables to return to baseline levels. The results confirm that each microwave exposure induced a rapid decrease in M. In a 20 degree C environment, the power density of a 10-min exposure required to lower M to approximate the resting level was 35 mW/cm2 (SAR = 5.3 W/kg). During the long exposures, 20 min was needed to decrease M to its lowest level. Cessation of irradiation was associated with persistence of low levels of M for periods that depended on the power density of the preceding microwave exposure. Vasodilation, as indexed by changes in local skin temperature, occurred at a high rate of energy absorption (SAR = 4.5 W/kg) and was sufficient to prevent a dramatic increase in storage of thermal energy by the body; vasoconstriction was reinstated after termination of irradiation. Patterns of thermophysiological responses confirm the influence both of peripheral and of internal inputs to thermoregulation in squirrel monkeys exposed to microwaves in a cool environment. PMID- 3836667 TI - Dielectric properties of developing rabbit brain at 37 degrees C. AB - The dielectric properties of developing rabbit brain were measured at 37 degrees C between 10 MHz and 18 GHz using time domain and frequency domain systems. The results show a variation with age of the dielectric properties of brain. An analysis of the data suggests that the water dispersion in the brain of newly born animals can be represented by a Debye equation. This dispersion increases in complexity with age, and there is evidence of a smaller additional relaxation process centered around 1 GHz. It is concluded that the principal contribution to this subsidiary dispersion region arises from water of hydration. PMID- 3836668 TI - The extremely low frequency electrical properties of plant stems. AB - The electrical properties (variation of capacitance and conductance with frequency) of a plant stem can be conveniently measured in vivo by time domain dielectric spectroscopy. In this technique a voltage step is applied to a stem. The resulting polarization current is sampled by a microprocessor and Fourier transformed to yield these properties. Spectra were obtained for seven electrode separations along a Poinsettia stem. The inverse capacitance and conductance were plotted vs separation for 50 frequencies from .35 to 350 Hz. Least-square fits yielded the effective dielectric constant and conductivity of the stem over this frequency range. In this way electrode effects were eliminated. A similar procedure was carried out for Coleus. A log-log plot of dielectric constant vs frequency shows a two-stage linear decrease for both plants. The conductivity is primarily DC. The dielectric loss decreases smoothly with frequency for Coleus. These results are compared to those for bone and the inorganic material hollandite. The dielectric properties seem best described by a cooperative, many body approach. PMID- 3836669 TI - Microwave-induced changes in nerve cells: effects of modulation and temperature. AB - Helix aspersa neurons were irradiated with continuous-wave (CW) and noise amplitude-modulated microwaves (carrier frequency 2450 MHz, 20% AM, 2 Hz-20 kHz) in a specially designed waveguide exposure system. Continuous-wave microwave irradiations were conducted at 8 degrees, 21 degrees, and 28 degrees C, while noise-modulated irradiation was performed at 21 degrees C. The results showed that exposure of snail neurons to CW microwaves for 60 min at 12.9 W/kg inhibited spontaneous activity and reduced input resistance at 8 degrees and 21 degrees C but not at 28 degrees C. The relative decrease in resistance at 21 degrees C was half that at 8 degrees C. Exposure of neurons to noise-modulated microwaves at 6.8 and 14.4 W/kg predominately caused excitatory responses characterized by augmented membrane resistance and the appearance of greater activity. The effect differed qualitatively from the inhibition observed with continuous, unmodulated microwave irradiation. PMID- 3836670 TI - Effect of microwave irradiation (2.45 GHz, CW) on egg weight loss, egg hatchability, and hatchling growth of the Coturnix quail. AB - Fertile eggs of the Coturnix quail were exposed twice a day for 30 min to 2.45 GHz continuous wave radiation at power densities of 25 or 50 mW cm-2 throughout the 17-day incubation period. Other eggs were exposed to 20 degrees C or 24 degrees C temperatures twice daily. Repeated exposures to 20 degrees C, 24 degrees C, or 25 mW cm-2 did not reduce hatchability. Irradiation at 50 mW cm-2 lowered hatchability, probably as a result of high egg temperatures. Hatchlings that had been irradiated by microwaves as embryos had normal growth rates and no obvious developmental abnormalities. PMID- 3836671 TI - A cytohistological analysis of roots whose growth is affected by a 60-Hz electric field. AB - Roots of Pisum sativum were exposed for 48 h to 60-Hz electric fields of 430 V/m in an aqueous inorganic growth medium. The growth in length of the exposed roots was 44% of that for control roots. Root tips were analyzed for mitotic index and cell cycle duration. Mature, differentiated root sections from tissue produced after electrode energization were analyzed for cell lengths and number of files. The major reason for the observation that exposed roots are shorter than control roots is that cell elongation in the former is greatly diminished relative to controls. PMID- 3836672 TI - Growth rate and mitotic index analysis of Vicia faba L. roots exposed to 60-Hz electric fields. AB - Growth, mitotic index, and growth rate recovery were determined for Vicia faba L. roots exposed to 60-Hz electric fields of 200, 290, and 360 V/m in an aqueous inorganic nutrient medium (conductivity 0.07-0.09 S/m). Root growth rate decreased in proportion to the increasing strength; the electric field threshold for a growth rate effect was about 230 V/m. The induced transmembrane potential at the threshold exposure was about 4-7 mV. The mitotic index was not affected by an electric field exposure sufficient to reduce root growth rate to about 35% of control. Root growth rate recovery from 31-96% of control occurred in 4 days after cessation of the 360 V/m exposure. The results support the postulate that the site of action of the applied electric fields is the cell membrane. PMID- 3836673 TI - Effects of microwave radiation (340 and 900 MHz) on different structural levels of erythrocyte membranes. AB - By use of fluorescence probes 1-anilinonaphthalene-8-sulfonic acid, 2 toluidinylnaphthalene-6-sulfonate, pyrene, perylene and chemical label phosphatidylethanolamine 2,4,6-trinitrobenzele sulfonic acid, the effect of microwave radiation on the erythrocyte membrane was studied. The studies with the fluorescence probes were carried out on erythrocyte ghosts and with 2,4,6 trinitrobenzene sulfonic acid on whole erythrocytes. The fluorescence was measured during irradiation of the membranes with 340-MHz microwaves at an SAR of 100 W/kg. Trinitrophenylation of phosphatidylethanolamine from whole erythrocytes was performed simultaneously with microwave irradiation at 900 MHz (10 mW/cm2). It was shown that the microwave field decreased lipid viscosity, altered the structural state of lipid-protein contact regions, and decreased the protein shielding of lipids. These changes corresponded to those produced by thermal action of microwaves. PMID- 3836674 TI - Erythrocyte hemolysis by radiofrequency fields. AB - A field-strength-dependent hemolytic effect of continuous-wave radiofrequency (RF) exposure in vitro has been demonstrated. Erythrocytes in whole heparinized rabbit blood were hemolyzed by a 2-h exposure to 50- or 100-MHz RF fields at field strengths of greater than 4 V/cm. An effect of comparable magnitude resulted from exposure to 10-MHz RF at a field strength of 9 V/cm. Sample temperatures were maintained at 22.5 degrees +/- 0.2 degrees C. There was no apparent involvement of heating or temperature gradients, nor were there any RF exposure effects on cellular K+ or Na+ concentration, nor on pH. The mechanism of the hemolytic effect is not known. Since the percentage of lysed erythrocytes was less than 1% and there was an absence of effects on cellular cation concentrations, RF radiation may have irreversibly altered the plasma membrane permeability of a sensitive subpopulation of red cells (possibly aged cells) leading to osmotic lysis. RF radiation at these frequencies appears to affect red cells in a manner that is qualitatively and quantitatively different from microwave radiation. PMID- 3836675 TI - Auditory response in rats exposed to 2,450 MHz electromagnetic fields in a circularly polarized waveguide. AB - Rats were exposed to 2,450-MHz pulsed microwave fields in a circularly polarized waveguide. The threshold incident energy density per pulse was about 1.5 to 3 microJ/cm2 over the range 1-10 microseconds. The corresponding whole-body averaged specific absorption of energy was 0.9 to 1.8 mJ/kg per pulse. The same response was evoked when the incident energy density or absorbed energy density per pulse was the same, regardless of the pulse widths. PMID- 3836676 TI - A role for the magnetic field in the radiation-induced efflux of calcium ions from brain tissue in vitro. AB - Two independent laboratories have demonstrated that electromagnetic radiation at specific frequencies can cause a change in the efflux of calcium ions from brain tissue in vitro. In a local geomagnetic field (LGF) at a density of 38 microTesla (microT), 15- and 45-Hz electromagnetic signals (40 Vp-p/m in air) have been shown to induce a change in the efflux of calcium ions from the exposed tissues, whereas 1- and 30-Hz signals do not. We now show that the effective 15-Hz signal can be rendered ineffective when the LGF is reduced to 19 microT with Helmholtz coils. In addition, the ineffective 30-Hz signal becomes effective when the LGF is changed to +/- 25.3 microT or to +/- 76 microT. These results demonstrate that the net intensity of the LGF is an important variable. The results appear to describe a resonance-like relationship in which the frequency of the electromagnetic field that can induce a change in efflux is proportional to a product of LGF density and an index, 2n + 1, where n = 0,1. These phenomenological findings may provide a basis for evaluating the apparent lack of reproducibility of biological effects caused by low-intensity extremely-low frequency (ELF) electromagnetic signals. In future investigations of this phenomenon, the LGF vector should be explicitly described. If the underlying mechanism involves a general property of tissue, then research conducted in the ambient electromagnetic environment (50/60 Hz) may be subjected to unnoticed and uncontrolled influences, depending on the density of the LGF. PMID- 3836677 TI - Thermoregulatory consequences of long-term microwave exposure at controlled ambient temperatures. AB - This study was designed to identify and measure changes in thermoregulatory responses, both behavioral and physiological, that may occur when squirrel monkeys are exposed to 2450-MHz continuous wave microwaves 40 hr/week for 15 weeks. Power densities of 1 or 5 mW/cm2 (specific absorption rate = 0.16 W/kg per mW/cm2) were presented at controlled environmental temperatures of 25, 30, or 35 degrees C. Standardized tests, conducted periodically, before, during, and after treatment, assessed changes in thermoregulatory responses. Dependent variables that were measured included body mass, certain blood properties, metabolic heat production, sweating, skin temperatures, deep body temperature, and behavioral responses by which the monkeys selected a preferred environmental temperature. Results showed no reliable alteration of metabolic rate, internal body temperature, blood indices, or thermoregulatory behavior by microwave exposure, although the ambient temperature prevailing during chronic exposure could exert an effect. An increase in sweating rate occurred in the 35 degrees C environment, but sweating was not reliably enhanced by microwave exposure. Skin temperature, reflecting vasomotor state, was reliably influenced by both ambient temperature and microwaves. The most robust consequence of microwave exposure was a reduction in body mass, which appeared to be a function of microwave power density. PMID- 3836678 TI - Operant control of convective cooling and microwave irradiation by the squirrel monkey. AB - Adult male squirrel monkeys (Saimiri sciureus) were individually chair-restrained in an air-conditioned Styrofoam box in the far field of a horn antenna. Each monkey first received extensive training to regulate the temperature of the air circulating through the box by selecting between 10 and 50 degrees C air source temperatures. Then, to investigate the ability of the animals to utilize microwaves as a source of thermalizing energy, 2450-MHz continuous wave microwaves accompanied by thermoneutral (30 degrees C) air were substituted for the 50 degrees C air. Irradiation at each of three power densities was made available, ie, at 20, 25, and 30 mW/cm2 [SAR = 0.15 (W/kg)/(mW/cm2)]. The percentage of time that the monkeys selected microwave irradiation paired with thermoneutral air averaged 90% at 20 and at 25 mW/cm2. The mean percentage declined reliably (p less than 0.001) to 81% at 30 mW/cm2, confirming the monkey's ability to utilize microwave irradiation as a source of thermal energy during the course of behavioral thermoregulation. All animals readily made the warm-air to microwave-field transition, regulating rectal temperature with precision by sequentially selecting 10 degrees C air, then microwave irradiation accompanied by 30 degrees C air. Although the selection of cooler air resulted in a slight reduction of skin temperatures, normal rectal temperature was maintained. The results indicate that the squirrel monkey can utilize a microwave source in conjunction with convective cooling to regulate body temperature behaviorally. PMID- 3836679 TI - Neuroendocrine parameters in the rat exposed to 60-Hz electric fields. AB - This study was designed to assess the neuroendocrine response of male Long-Evans rats to sustained or intermittent 60-Hz electric fields when exposed for 1 or 3 h at 100 kV/m. No significant differences were noted in corticosterone, prolactin, or thyrotropin levels between exposed and sham-exposed rats. A statistically significant increase (P less than .01) in growth hormone was noted in rats exposed to intermittent electric fields for 3 h. Emphasis was placed on good experimental design and the need to avoid standard laboratory stressors (excessive handling, temperature extremes, transportation, noise, etc.) known to be present in many biomedical studies. The importance of avoiding reactions due to extraneous factors in experiments predicated on investigating physiological function in relation to electric field exposure is discussed. PMID- 3836680 TI - Noninvasive thermometry using multiple-frequency-band radiometry: a feasibility study. AB - The potential use of multiple-frequency-band radiometry as a means of noninvasive sensing of one-dimensional temperature profiles is presented in this communication. The radiative energy transfer equation is solved numerically. Ideal-condition thermal noise spectra and distributions of received energy, associated with specific temperature-depth profiles, are presented. Performance characteristics are discussed. PMID- 3836681 TI - Regional turnover of norepinephrine and dopamine in rat brain following acute exposure to air ions. AB - Exposure to air ions has been reported to influence serotonin (5HT), although critical reviews of these studies and previous measurements in our laboratory of the concentration, release, and utilization of brain 5HT indicate that neither the data nor the interpretations of the data are particularly convincing. Measurements of other possibly relevant neurotransmitter systems--norepinephrine (NE) and dopamine (DA)--were made in brain regions selected because of their importance in the modulation of brain functions relating to motivation, arousal, endocrine function, and motor activity, all responses that have been reported to be influenced by air ion exposure. Results indicate that exposure of male Holtzman rats to high concentrations (5.0 X 10(5)/cm3) of positive or negative air ions or to DC electric fields (3.0 kV/m) for periods up to 66 h failed to affect the concentration of NE or DA significantly in any of the brain regions. PMID- 3836682 TI - [Clinical and electroencephalographic studies of patients with various types of alopecia]. PMID- 3836684 TI - [The use of the axial external fastener in reconstructive plastic surgery with cross-leg flap. Technical note]. PMID- 3836683 TI - [Multi-fragmented fractures of the patella: osteosynthesis or partial patellectomy?]. PMID- 3836685 TI - Differential effects of cytosolic modulators of fluoride-stimulated adenylate cyclase activity in striatum and cerebral cortex. AB - The effects of sodium fluoride (NaF) and ethanol on adenylate cyclase activity were investigated in mouse and rat striatum and cerebral cortex. In a crude homogenate of striatum, NaF (10 mM) had no effect on adenylate cyclase activity even though guanyl-5'-yl-imidodiphosphate (GppNHp) increased enzyme activity by two-fold. Addition of 300 mM ethanol increased basal and GppNHp-stimulated activity and allowed expression of an effect of NaF. Stimulation of adenylate cyclase activity by NaF was also observed after sedimentation and resuspension of membranes. Readdition of the supernatant to washed membranes caused a decrease in maximal NaF-stimulated activity without any change in the concentration of NaF required for half-maximal stimulation. The inhibitory effect of the supernatant was resistant to heat but was eliminated by the addition of ethanol or perchloric acid. Inhibition of NaF-stimulated adenylate cyclase activity in striatal tissue was also observed when assays were carried out in the presence of a 20,000 X g supernatant prepared from cerebral cortex. NaF-stimulated activity in cortical tissue was, on the other hand, enhanced in the presence of a 20,000 X g supernatant prepared from either cortex or striatum. This suggests that there is a basic difference between the adenylate cyclase systems of these tissues. PMID- 3836686 TI - The effect of stress on tolerance to ethanol in rats. AB - In male rats given 6.0-8.0 g/kg of ethanol/day via gastric intubation, footshock stress accelerated the development of functional tolerance to ethanol (ethanol induced hypothermia and motor impairment on a dowel task). A primarily psychological stressor (observing other rats that were being shocked) may have retarded tolerance development as subjects in this condition showed no development of functional tolerance. Nonstressed subjects developed tolerance more slowly and required a higher daily dose of ethanol to develop tolerance than shock stressed subjects. Conditioned responses to the drug administration procedure did not appear to play a role in the development of tolerance. PMID- 3836687 TI - Effects of exposure to stressful stimuli on the free-choice consumption of various phenethylamines by rats. AB - In an attempt to investigate whether a relationship exists between exposure to stressful stimuli and the consumption of CNS stimulants, rats were given continuous access to an 0.1% saccharin solution and either d-amphetamine (AMP), methamphetamine (MET) or phenylpropanolamine (PPA) at two concentrations. Animals were exposed to either isolation/novel environment or immobilization stress repetitively over a two week period on an irregular/unpredictable schedule. No differences were seen between control (non-stressed) and stressed animals with respect to the volume of AMP, MET or PPA consumed either during stress or in two weeks post-stress. All three drugs failed to demonstrate any oral reinforcing properties as evaluated by positional perseveration. In contrast to earlier work using ethanol, the data suggests that stress has very little influence over the oral ingestion of phenethylamines. PMID- 3836688 TI - Proceedings of the symposium "Pharmacology and Psychobiology of Alcoholism" held at the IVth World Congress of Biological Psychiatry. Philadelphia, Pennsylvania, September 8-13, 1985. PMID- 3836689 TI - Development of tolerance to ethanol-induced tachycardia in rats. AB - Development of tolerance to ethanol was examined using heart rate as a measure. Ethanol-treated rats were infused IG with 8-11 g/kg/day (in 3 divided doses), control rats received similar infusions of either equicaloric dextrin-maltose or water (equivolumetric) for a period of 17 days. On days 1, 5, 9, 13 and 17 of treatment heart rate was recorded before and at 10, 20 and 30 minutes after injection of a challenge dose of 2 g/kg ethanol, dextrin-maltose or water. The tachycardia produced by ethanol increased with days of chronic treatment to a maximum on the 9th day of treatment. Significant tolerance to the tachycardia was evident only on the 17th day of treatment. Neither control showed significant changes in heart rate. PMID- 3836690 TI - Ethanol-stress interaction on dopamine metabolism in the medial prefrontal cortex. AB - The effect of foot-shock and ethanol (2 g/kg per os) and the combination of the two on dopamine (DA) metabolism in the medial prefrontal cortex (MPFC) was studied in rats. Electric foot-shock stress (20 min stimulation) decreased DA concentration by 30% and increased dihydroxyphenylacetic acid (DOPAC) concentration by 65%. Ethanol (2 g/kg orally) decreased DA concentration by 20%, but, unlike foot-shock, failed to modify DOPAC levels. Neither treatments modified homovanillic acid (HVA) levels. The combination of ethanol (30 min before shock) and foot-shock produced about a 50% depletion of DA content and 30% increase in HVA, but no change in DOPAC levels. It is suggested that both ethanol and foot-shock activate DA release in the MPFC, but ethanol decreases DA retrieval by nerve terminals and, therefore, prevents intraneuronal deamination of the amine. PMID- 3836691 TI - Towards optimal trauma care. AB - This paper examines some problems related to trauma care, and, at the same time, discusses some solutions, particularly stressing the need for a trauma system in Great Britain. PMID- 3836692 TI - Urgent care centres. PMID- 3836693 TI - Urgent care centres: proceed with caution. PMID- 3836694 TI - BMX bicycles: accident comparison with other models. AB - A comparison has been made between BMX bicycle accidents and those occurring when children ride other types of bicycle. The injuries sustained are compared to see if the clinical impressions that BMX are more dangerous, and produce more facial injuries, are correct. This was found not to be true as half the children involved rode BMX bicycles, and the injuries sustained were similar to those occurring to non BMX riders. BMX riders had a lower proportion of serious injuries than riders of racing cycles. There were a large number of head injuries needing admission to hospital, but BMX riders had fewer head injuries than the other groups. The use of protective headgear was minimal. Facial injuries were evenly distributed between BMX and non BMX groups. The major cause of accidents to BMX riders was performing stunts but, overall, poor cycling technique associated with minimal cycling experience were the factors common to 50% of accidents. PMID- 3836695 TI - The medical effects of seat-belt legislation in the United Kingdom: the collection of the data. AB - On 31 January 1983, it became compulsory for most drivers and front-seat passengers in vehicles with an unladen weight of less than 3 tons to wear seat belts in the United Kingdom. This study was devised in order to provide definitive information on any changes in the injury patterns car and light goods vehicle occupants have suffered resulting from the law. Originally it was expected that this aim would be achieved by collecting data from hospitals for a year before and a year after the introduction of the law. However, it proved impossible to collect data uniformly through the hospital system on all fatally injured casualties, and, in consequence, a parallel study of injuries sustained by fatalities was undertaken using coroners' records. The methodology of the hospital and fatal studies were very similar, excepting that the latter covered only two corresponding 6-month periods in 1982 and 1983. PMID- 3836696 TI - The medical effects of seat-belt legislation in the United Kingdom: a critical review of the findings. PMID- 3836697 TI - The medical effects of seat-belt legislation in the United Kingdom: the statistical arguments. PMID- 3836698 TI - Injuries, seat-belts and further research. PMID- 3836699 TI - Medical effects of seat-belt legislation in the United Kingdom. Future legislation. PMID- 3836700 TI - The overall assessment of the medical effects of seat-belt legislation in the United Kingdom. PMID- 3836701 TI - The medical effects of seat-belt legislation in the United Kingdom: one viewpoint from the USA. PMID- 3836702 TI - Twenty-seventh annual meeting of the American Society of Hematology. New Orleans, December 7-10, 1985. Abstracts. PMID- 3836703 TI - Femtomole isotopic-enzymatic microassay of histamine in microgram amounts of brain tissue. AB - We present a modification of a previously described radioenzymatic technique (Snyder et al., Journal of Pharmacology and Experimental Therapeutics, 153: 544 549, 1966) for the determination of histamine. This assay is based on the incubation of tissue histamine with a partially purified preparation of histamine N-methyltransferase (S-adenosyl-L-methionine: histamine N-methyltransferase, E.C. 2.1.1.8; HMT) in the presence of the natural donor of methyl groups, [3H]-methyl S-adenosyl-L-methionine ([3H]-SAMe). We have found that HMT retains its histamine N-methylating activity at 4 degrees C. Incubation at low temperature results in a considerable increase in the sample to blank ratio. The reduction of the total amount of [3H]-SAMe used and addition of anhydrous sodium sulfate before the last organic extraction step further reduced the blank levels. With these modifications, the sensitivity of the method was increased to the lower femtomole range. The present assay can be used for the determination of as little as 1 to 2 pg of histamine in samples from individual rat brain nuclei containing 2 to 10 micrograms of protein. PMID- 3836704 TI - Amino acid patterns in the plasma and ascitic fluid of cirrhotic patients. AB - Amino acid levels were measured in the plasma and ascitic fluid of 13 alcoholic patients with liver cirrhosis and of 14 normal controls. The plasma aromatic amino acids of the alcoholic patients were not statistically different from those of the control subjects, whereas the levels of branched-chain amino acids were reduced (P less than 0.05). The values for the ratio of the muscle/liver metabolized amino acids (valine + isoleucine + leucine)/(phenylalanine + tyrosine + methionine) were statistically lower in the cirrhotic patients both in plasma and ascitic fluid (P less than 0.05). The amino acid levels in the ascitic fluid of the cirrhotic patients were slightly lower than those in the plasma of the same patients and the values for the muscle/liver metabolized amino acid ratio were similar in plasma and ascitic fluid. Aspartic acid, glutamic acid and glycine levels were higher among the cirrhotic patients (P less than 0.05). Cirrhotic patients present an alteration in amino acid metabolism which creates a different amino acid pattern in both plasma and ascitic fluid. The significance of the proposed ratio and its possible relation to hepatic failure are discussed. PMID- 3836705 TI - Lack of correlation between intragastric pressure and early gastric emptying rate after proximal gastric vagotomy. AB - In order to evaluate the contribution of the impairment of the gastric accommodation to distension to the abnormalities of the gastric emptying of a liquid meal, these functions were evaluated simultaneously in 20 duodenal ulcer patients after proximal gastric vagotomy and in 13 non-operated duodenal ulcer patients. Gastric accommodation was measured by recording intragastric pressure during intragastric instillation of 500 ml 10% dextrose and the gastric emptying of this solution was measured with the double-sample test meal with phenol red as unabsorbable marker. The intragastric volume remaining 10 min after the 500 ml 10% dextrose test meal was significantly (P less than 0.02) smaller in the post vagotomy patients (range: 60.0 to 580.0 ml; median: 320.0 ml) than in the non operated patients (range: 220.0 to 540.0 ml; median: 380.0 ml). There was no significant difference between the two groups for the half-life of the test meal in the stomach. Maximal intragastric pressure was significantly higher (P less than 0.02) in post-vagotomy patients (range: 3.3 to 14.5 mmHg; median: 8.7 mmHg) than in non-operated patients (range: 1.8 to 5.5 mmHg; median: 3.8 mmHg). There was no significant correlation between maximal intragastric pressure and volume remaining 10 min after the test meal or half-life values within any group. These results confirm other studies showing that the initial gastric emptying rate of a liquid meal is accelerated and the gastric accommodation to distension is impaired by proximal gastric vagotomy, while overall gastric emptying is not changed.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836706 TI - Reduced levels of erythrocyte sorbitol dehydrogenase activity in human diabetics. AB - Erythrocyte sorbitol dehydrogenase activity was significantly lower for 34 diabetic patients (mean +/- SD: 0.219 +/- 0.085 U min-1 g Hb-1) than for 27 normal blood donors (0.34 +/- 0.094 U min-1 g Hb-1). This finding agrees with the previous report of low sorbitol dehydrogenase activity in the lens of diabetic patients but contrasts with the data of Crabbe and collaborators (M.J.C. Crabbe, A.B. Halder, C.O. Peckar and H. Cheng, Lancet, 2: 1268-1270, 1980) who found a large variation in the levels of the diabetic population and which was not significantly different from the normal control. PMID- 3836707 TI - Characteristics of spontaneously hypertensive, Wistar Kyoto and Munich Wistar rats bred in Brazil. AB - The breeding of imported strains of isogenic rats was started in 1981 because of the lack of experimental rat models in Brazil. The imported strains were: Spontaneously Hypertensive Rats (SHR) and their normotensive controls Wistar Kyoto Rats (WKY) from the National Institutes of Health, Bethesda, MD, and Munich Wistar (MW) rats which present superficial renal glomeruli, from Simonsen Laboratories, Gilroy, CA. Breeding of these strains was carried out without strict barriers (conventional breeding), under Standard Operating Procedures and strict inbreeding. Environmental factors such as ration, light, temperature, type of shavings and bedding, size of cages and their population were constant. Body weight growth curves were constructed for the three strains. The productivity of imported rats and local breeding colonies in 1981, 1982 and 1983 was compared on the basis of the following parameters: mean litter size, productivity of the females, pre- and post-weaning mortality, and effective yield. Systolic blood pressure was also measured for SHR and WKY rats. MW rats showed a high and relatively stable reproduction performance. The productivity of SHR and especially WKY animals declined progressively during the first three years, making the breeding of these strains of isogenic rats very difficult. PMID- 3836708 TI - Detection of IgG-bearing erythrocytes by a sensitive Staphylococcus aureus protein A-binding radioassay: possible usefulness for the differential diagnosis of connective tissue diseases. AB - We describe a sensitive radioassay for detecting erythrocyte-associated immunoglobulin employing the immunoglobulin-specific reagent Staphylococcus aureus protein A. The assay was used to determine the extent to which erythrocytes from patients with different connective tissue disease bind radiolabelled protein A. Increased amounts of protein A were bound by erythrocytes from patients with systemic lupus erythematosus or with progressive systemic sclerosis when compared to a control group, whereas there was no significant binding to erythrocytes from patients with rheumatoid arthritis or with polymyositis-dermatomyositis. The assay, because of its high sensitivity and of the availability of the reagent in pure form, should be useful for the investigation of cell-bound antibodies and for the differential diagnosis of connective tissue diseases. PMID- 3836710 TI - [Function of the Fc receptor of the mononuclear phagocytic system in immune diseases]. PMID- 3836709 TI - Differential changes in dopaminergic receptor sensitivity induced by agonist drugs. AB - Mice were treated acutely or chronically with apomorphine (APO) (0.1 and 1.0 mg/kg) or L-DOPA (150 mg/kg) plus benserazide (50 mg/kg). The decrease of homovanillic acid (HVA) caused by APO was greater in acutely treated animals. After APO or L-DOPA pretreatment the animals received single doses of haloperidol (HALO) (1.5 mg/kg) or saline and were submitted to behavioral and biochemical analysis in order to determine changes in dopaminergic receptor sensitivity. When the acutely and chronically treated groups were compared, we found no difference in the cataleptogenic effect of HALO nor any difference in the effect of HALO in increasing brain HVA levels. The data suggest that chronic treatment with dopaminergic agonists leads to changes in receptor sensitivity for the agonist but not for the antagonist effect. PMID- 3836711 TI - [Aspects of the physiopathology of left cardiac insufficiency in the acute stage of myocardial infarct: therapeutic implications]. PMID- 3836712 TI - Importance and role of basic research for medical research. PMID- 3836713 TI - [Role and importance of clinical medical research]. PMID- 3836714 TI - The medical faculty and medical research. PMID- 3836715 TI - [Medical research and the academic hospital]. PMID- 3836716 TI - Osteonecrosis of the hip and knee. PMID- 3836717 TI - The eye in rheumatic disease. PMID- 3836718 TI - Mammography and the value of screening. PMID- 3836719 TI - Implications of AIDS screening. PMID- 3836720 TI - Microsurgery of the middle ear. AB - Microsurgery of the middle ear has evolved over the past three decades through the art of the technically possible to the art of the clinically advisable. Stapedectomy has been refined to achieve an acceptably high level of success. Tympanoplasty in its simpler forms (myringoplasty +/- incus transposition) is very successful in the restoration of a dry hearing ear. Reconstruction in the absence of a mobile stapes remains an unresolved problem. The safe avoidance of an open cavity in cholesteatomatous disease continues to be an elusive goal. PMID- 3836721 TI - Microsurgery for stroke. AB - Stroke remains a major problem in the Western world but microneurosurgical procedures are applicable only to a minority of victims, namely those with intracranial carotid occlusion and those with aneurysms or arteriovenous malformations. The operating microscope has made the technical approach to these feasible. However, questions remain as to the validity of the extracranial intracranial bypass in carotid occlusion and the timing of aneurysm surgery. These questions tend to overshadow the technical advances following on from use of the operating microscope. PMID- 3836722 TI - Current management of choroidal malignant melanoma. AB - Malignant melanoma is the most frequently encountered primary intraocular neoplasm. Within the eye this tumour arises in the uveal tract where the choroid is affected more often than the iris or ciliary body. The tumour occurs typically in middle life and the aetiology is not known. Uveal tissue is heavily pigmented in all races but ocular melanoma is notably rare in negroes. There is clinical and pathological evidence that malignant change may take place in a choroidal naevus, but melanoma has arisen in eyes documented to have no pre-existing pigmented lesion. PMID- 3836723 TI - Frontal sinus abscess and secondary orbital cellulitis. AB - Despite modern antibiotics, frontal sinus abscess (and secondary orbital cellulitis) remains relatively common and potentially life-threatening. The declining incidence of chronic middle ear disease in the UK has made it one of the commonest causes of intracranial abscess. The speed with which suppuration can penetrate the sinus walls remains poorly understood and a research challenge. Management is best supervised by an ENT surgeon because the key decision is the timing of sinus surgery. The ENT surgeon, nevertheless, must be alert to the indications for consultation with neurosurgical colleagues. This paper aims to give an illustrated account of the clinico-pathological features and current management. PMID- 3836724 TI - Multiple personality syndrome. AB - Multiple personality syndrome is one of the most fascinating conditions encountered in psychiatric practice. Although its existence has been known for nearly two centuries, there is a relative sparcity of literature on this condition and its importance is underemphasized in psychiatric training. My theory is that this is a far more common condition than has been hitherto realized and the lack of case reports is largely a manifestation of the lack of awareness of diagnostic criteria. PMID- 3836725 TI - "Non-toxic" megacolon in Crohn's colitis. PMID- 3836726 TI - Investment opportunities. PMID- 3836727 TI - Sexual transmission of AIDS. PMID- 3836728 TI - Converting gays to normal. PMID- 3836729 TI - Monocular and binocular optic inputs to salamander pretectal neurons: intracellular recording and HRP labelling study. AB - Intracellular recordings and horseradish peroxidase injections were performed in the pretectum and adjacent tegmentum of Salamandra salamandra, while both optic nerves were electrically stimulated. In approximately half of the recorded units no spikes could be evoked but rather graded postsynaptic potentials. The latter type morphologically showed features of interneurons. From a total of 48 recorded units, nearly 60% were excited only by the contralateral optic nerve, whereas approximately 40% were binocular. For the most part (10/19) the binocular cells were excited by the contralateral and inhibited by the ipsilateral optic nerve. Fewer neurons (7/19) received excitatory inputs from both optic nerves. The latency distribution of the monocular cells shows a maximum of 20-30 ms. The same maximum exists for the contralateral inputs to the binocular cells, whereas the ipsilateral inputs to these units were nearly as frequent with latencies of 20-30 and 40-50 ms. Since neurons with the short ipsilateral latencies always had parts of their dendrites within the ipsilateral ocular projection field, a feature which was lacking in the cells with long ipsilateral latencies, it is possible that the longer latencies are due to indirect ipsilateral inputs. Efferents of labelled dorsal pretectal cells reach the contralateral pretectum via the posterior commissure, the basal optic neuropil of the accessory optic system and the tegmental white substance. More ventrally located cells often reach the pretectal and the basal optic neuropil with their dendrites. Axons of this type descend to the medulla oblongata via the medial longitudinal fasciculus. PMID- 3836730 TI - Comparison of olfactory bulb projections in pigeons and turtles. AB - The projection targets of the olfactory bulb in pigeons and turtles were investigated using autoradiographic techniques. Despite the relatively smaller size of the olfactory bulbs in pigeons, the projection targets of the olfactory bulb are very similar to those in turtles. In both pigeons and turtles, the olfactory bulb projects to the entire rostrocaudal extent of a portion of the dorsolateral telencephalon (which is here recognized as the pyriform cortex in both birds and reptiles) and to portions of the medial telencephalic wall including the medial septal region. In addition, a projection to the olfactory tubercle of the ventral telencephalon is clearly present in turtles and also appears to be present in pigeons. Pigeons and turtles do differ significantly, however, in the extent of the projection to the amygdaloid region. In turtles, olfactory bulb input encompasses the entire mediolateral and rostrocaudal extent of the amygdaloid region, while in pigeons the input is restricted to a small dorsomedial portion of the amygdala termed nucleus taeniae of the archistriatum. The present results suggest that the olfactory bulb projections in birds are generally similar to those in reptiles, with the exception that secondary olfactory bulb projections to the amygdala may be much reduced in birds compared to those in reptiles. The functional significance of the reduction in olfactory input to the amygdala is presently uncertain. PMID- 3836731 TI - Size and shape of the cerebral cortex in mammals. I. The cortical surface. AB - The evolution of the brain in mammals has been accompanied by a progressive enlargement of the cerebral cortex. Allometric analysis of the volume, surface and convolutedness of this cortex shows that among mammals two major groups can be distinguished: (1) species with lissencephalic brains, where surface-volume relationships are determined by linear geometric laws, and (2) species with gyrencephalic brains, where strict geometric similarity no longer applies. Different mathematical models are required to describe the brain morphology in these groups. It has been shown, moreover, that among species with convoluted brains, marine mammals (Cetacea) form a subgroup in that the cerebrocortical surface in these animals is more folded than in terrestrial mammals of similar brain size. Thus it appears that the use of a single allometric relation in studying the effect of size increase on the geometry of the brain - irrespective of convolutedness or ecological strategy - as has been done in previous studies, is unjustified and obscures the differences in the structural organization of mammalian brains. Finally, a dimensionless index of cortical folding is proposed, which indicates that the degree of cortical folding depends not only on the volume of the brain or cortex but on cortical thickness as well. PMID- 3836732 TI - [Prevention of mediastinitis after cardiac surgery]. PMID- 3836733 TI - [Maternal blood levels of bupivacaine following prolonged fractionated administration]. PMID- 3836734 TI - [Caudal anesthesia in children: two-year retrospective study]. AB - Caudal anesthesia has been used on a daily basis for two years in the Department of Anesthesia of Saint-Vincent-de-Paul Hospital. A retrospective study on 231 children was done to specify the procedures, the indication and the dosage of local anesthetics. PMID- 3836735 TI - [Paramedian lumbar puncture for spinal anesthesia in the elderly]. PMID- 3836736 TI - [Bronchopneumopathies caused by inhalation of the gastric contents]. PMID- 3836737 TI - [Emergency surgery long after severe heparin-induced thrombocytopenia. Use of low molecular weight heparin and vitamin K antagonists]. PMID- 3836738 TI - [INSERM survey on anesthesia and anesthetist manpower in France]. PMID- 3836739 TI - [The cost of anesthesia]. PMID- 3836740 TI - [Ministerial circular of 10 October 1985, intended to improve the safety of anesthetized patients]. PMID- 3836741 TI - [Epidemiology of new rotavirus diarrhea in the Hengyang District of Hunan Province]. PMID- 3836742 TI - [Isolation and serological identification of the spotted fever rickettsia in Hu Meng, the Inner Mongolia Autonomous Region]. PMID- 3836743 TI - [Characteristics of HBV serological markers and their titers in a rural population]. PMID- 3836744 TI - [Survey on epidemiological factors of hypertension in different nationalities]. PMID- 3836745 TI - [Survey on case-control in colon cancer]. PMID- 3836746 TI - [Seroepidemiology of measles in 1428 people from a copper mine of Chengde City]. PMID- 3836747 TI - [Analysis of the number of square meters of snail infected areas before and after control measures in Ji-Cheng-Yuan]. PMID- 3836748 TI - [Single dose of 2 acute rodenticides used in a village]. PMID- 3836749 TI - [Use of monovalent antiserum against albumin in counterimmunoelectrophoresis]. PMID- 3836750 TI - [Effect of permanent bait boxes containing anticoagulants in rodent control on the trains]. PMID- 3836751 TI - [A simple and sensitive medium for Brucella]. PMID- 3836752 TI - [Second international French language meeting on tropical medicine. 14-16 October 1985, Sousse (Tunisia)]. PMID- 3836753 TI - [Epidemiology of hydatidosis in the Tunisian Sahel and central Tunisia]. AB - Hydatidosis is very common in the Sahel and Central Tunisia. The 1984 annual surgical incidence rate of hydatid disease is 21.89 per one hundred thousand. Prevalence rates vary from 0.36 to 1.3%. Animal infestation is also common. PMID- 3836754 TI - [Cost of hydatidosis surgery at the Sousse University Hospital (Tunisia)]. AB - Hydatidosis is a very common disease in Tunisia, with a great economical importance for the health care system. In 1983, for Sousse Hospital, the total cost for hydatidosis was 125,000 US $. More than half of these costs were for "hospital days". A more rational in the services administration would make decrease these costs, but the best is a special attention to primary prevention. PMID- 3836755 TI - [New cases of hydatidosis in Niger]. AB - New cases of hydatidosis in the Republic of Niger. Five cases of hydatidosis diagnosed in the Republic of Niger are reported. All localisations are extra hepatic: spleen: 2, lungs: 1, mediastinum: 1, parotid gland: 1. West african hydatidosis is uncommon and remarkable for the predominance of extra-hepatic localizations. PMID- 3836756 TI - [Significance of antigenemia and IgG, IgM, IgA and IgE antibodies in the immunology of hydatid cyst. Results of immuno-enzymology. Apropos of 87 cases]. AB - Circulation antigen and sera antibodies were measured in 122 sera obtained from 87 patients with proved hydatic echinococcosis: the sera were obtained before and after surgical treatment. Circulating antigen was detected by E. L. I. S. A., and was present in 21% of the sera. Antibodies were present by conterimmunoelectrophoresis in 56%, by haemagglutination in 72%, E. L. I. S. A. IgG in 87%, E. L. I. S. A. IgM in 54%, E. L. I. S. A. IgA in 53%, E. L. I. S. A. IgE in 25% of the sera. No evident correlations between these results and the localisation could be found, nor with anatomical integrity of the cyst, or the surgical treatment date. Only the presence of IgE or circulating antigen could suggest the high level passage of hydatic proteins, bringing to mind a fissuration of the cyst wall. PMID- 3836757 TI - [Mebendazole treatment of echinococcosis]. AB - Forty patients with echinococcosis were treated with mebendazole (approximately 50 mg/kg body weight) and under observation for up to 8 years. In 8 patients, E. multilocularis-infection was diagnosed whereas 32 patients had liver (n = 19 lung, n = 7) or other infestations of E. granulosus. 23 patients had been treated with mebendazole alone. 20 further patients received the treatment pre- and post operatively and in the remaining cases mebendazole was given pre- or post operatively according to the patients' requirements. Besides the clinical and laboratory findings, morphological parameters of organ infestation due to the parasites were examined repeatedly by x-ray, ultra sound, Ct-scan or scintigram. In the course of treatment we noticed that mebendazole had a certain effect in the case of E. multilocularis-infection and in the case of lung infestation due to E. granulosus. Furthermore, patients who were treated with mebendazole and who were under observation for several years, showed improvement of the liver cyst. The analysis of all morphological data available from patients with liver cysts indicated that marked changes had already been observed in the period of one to thirty months after the beginning of therapy. PMID- 3836758 TI - [Treatment of echinococcosis (E. granulosus) with albendazole]. AB - Albendazole, given as a 28 day course of 800 mg/day at 15 days intervals can be effective in the treatment of liver and lung hydatic cysts in adults of average weight. On average, six courses are required to obtain a satisfactory result (negative serological results, decrease in volume of scanner images). The treatment must be monitored and should only be prescribed in case of surgical contraindication or refusal by the patient to undergo surgery. PMID- 3836759 TI - [Alveolar echinococcosis in Tunisia. Apropos of 2 cases]. AB - The authors report the first two cases of Echinococcus multilocularis observed in Tunisia, in two patients from the North-West of the country, who never travelled abroad. The diagnosis was reached by histopathologic examination of a partial hepatectomy section. The appearance of this disease in this geographic area where unilocularis hydatic cyst is endemically present needs further epidemiologic study. PMID- 3836760 TI - [Abdominothoracic hydatidosis. Evaluation of 5 years' activity of the surgical service of the Farhat Hached de Sousse University Hospital]. AB - The authors report a statistical study of abdominal and/or pulmonary locations of hydatid cyst disease operated on at Farhat Hached hospital (Sousse, Tunisia) during a five years period. Between January 1980 and December 1984, 465 patients were operated on by Pr Gharbi's staff. 255 patients had hydatid cyst disease of the liver. 68% of them were more than 30 years of age and 67% were females. 16% of these patients had obviously complicated lesions. This rate was as high in adults as in children less then 15 years old. The basic surgical procedure was a more or less extensive partial pericystectomy. The mean hospital stay in surgical environment was 33 days. The mortality rate in this group was 5.9% (15 deaths). 195 patients had pulmonary hydatid cyst disease. 83% of them were less then 30 years of age and 57% were males. The complication rate at presentation was 30% and was similar among adults and children less 15 years of age. Despite the fact that 15% of these patients have been treated by lobectomy, the basic surgical procedure in this group was also a more or less extensive partial pericystectomy. The mean hospital stay in surgical environment was 15 days and the mortality rate 0.5% (one death). About the other locations of the disease, 7 cases of peritoneal ecchinococcosis were recorded. The youngest patient was 15 years old. The interventions necessitated by the whole of these locations represented no less than 8.65% of the surgical procedures performed in our service. PMID- 3836761 TI - [Open hydatid cysts in the digestive tract. Apropos of 3 cases]. PMID- 3836762 TI - [Analysis of schistosome/molluscan vector compatibility]. AB - The compatibility between Schistosomes and Molluscs cannot be accurately analysed by a single method. When a given host-parasite pairing is studied, it is necessary to test separately the performance of the parasite against the Mollusc, the performance of the defense mechanisms of the host and the performance of the host-parasite system when producing cercariae. In addition, the usual laboratory "strains" are not suitable for population genetics studies because of the impoverishment of the gene-pool. PMID- 3836763 TI - Some epidemiological consequences of the evolutionary fit between Leishmaniae and their phlebotomine vectors. AB - There is a more or less close fit between Leishmania species and their vectors with the proven vector of one parasite often unable to support the full development of another. This fit is presumably a result of coevolution of vector and parasite and it is notable that, if a Leishmania has different invertebrate hosts in different parts of its range, the vectors are often closely related. The epidemiological consequences of this restriction are, firstly, that the spread of the cutaneous leishmaniases of the Old World and, to a lesser degree, that of visceral leishmaniasis is restricted by the distribution of suitable vectors and, secondly, that secondary vectors are of less importance on the epidemiology of the leishmaniases than they are in malaria. PMID- 3836764 TI - [New data on the transmission of filariae]. AB - This paper summarizes research of the past several years on two phases of filarial transmission: the ingestion of microfilariae by the vector and the regulation of the percentage of successful parasites by the vector. Experiments involved several different models for study: injection of inert particles into the bloodstream of a rodent and their subsequent ingestion by a vector; ingestion of gametocytes of different ages by vectors of a rodent malaria; and a monkey simultaneously infected with four different species of filariae. This has led to the idea that there exist two categories of microfilariae: those blood-borne microfilariae which cannot enter capillaries and those microfilariae which are said to be "dermic" but in fact live trapped in capillaries and are only taken up through the suction applied by vectors during their feeding. Thus, the lesions of onchocerciasis are caused by microfilariae accidentally leaving the capillaries and entering the surrounding tissues. Passage through the stomach wall of a vector by microfilariae is the essential stage in regulating the percentage of successful parasites: the phenomena of facilitation or limitation. Two examples of limitation are given. In the model--Onchocerca volvulus-Simulium sirbanum--the thickness of the peritrophic membrane which traps microfilariae is determined by the number of microfilariae ingested; the greater the number ingested the thicker is the membrane. In the model--Molinema dessetae-Aedes aegypti--the lytic reactions of individual digestive cells which are provoked by attacking microfilariae occur only in heavily infected mosquitoes. The "immunity" of the arthropod vector seems to take a number of forms which are distinctly different from those of vertebrates. PMID- 3836765 TI - [Arbovirus-vector relations]. AB - The arbovirus-vector relationships result from several successive phenomena: infection of the vector, replication and dissemination of the virus inside the arthropod, transmission to the vertebrate. We propose to call "competency" the entirety of these relationships particular to specific viral and arthropod populations, the adaptation of which it characterizes. By "vectorial capacity", we must designate the competency and the effect exerted on it by environmental factors. PMID- 3836766 TI - [Toxoplasmosis in the African tropical zone. Preliminary studies]. AB - Toxoplasmosis in Tropical African area was not subject to many publications but the results indicate that toxoplasmosis may influence the health of the populations. We present prevalence studies carried out in the Central African Republic, Mali, Niger, Burkina-Faso, Togo to find toxoplasma-antibodies by Agglutination of Latex. For adults the lower percentage was found in the North Central African Republic villages (40%) and the higher in Mali (nearly 70%). These high percentages justify a larger epidemiological study in Tropical Africa. PMID- 3836767 TI - [Toxoplasmosis in Japan. Comparative study of different regions]. AB - Specificities of Japan by geography, culture, and low incidence for Toxoplasmosis were examined in this epidemiological study. 1 731 human sera were examined by several immunological tests but these results are related with Agglutination Latex test. The sera came from North (Hokkaido), Middle (Tokyo area) and South (Okinawa). The ratio for the whole Japan towards Toxoplasmosis is 24.7% but the increase of antibodies with age is late: rate of positivity 4.6% up to 17 years old and nearly 30% after 30 years old. Cats, business, climate do not seem to influence the human infection. It is consumption of meat and particularly raw meat which influence the results: 40.8% positive results among eaters of raw meat and 22% among those not eating meat or eating it well cooked. PMID- 3836768 TI - [Seroepidemiologic study of toxoplasmosis in the school population of Sousse]. AB - To obtain basic epidemiological data about toxoplasmosis in our area, we undertook a serological investigation of the female school population of Sousse City. 33% of the students in college (mean age: 17.8 years) are seronegatives. Social economic status seems not to be important for the risk of infection. The more important source of contamination may be the soil. PMID- 3836769 TI - [A proposed protocol for prevention of congenital toxoplasmosis adaptable in a tropical zone]. AB - In Toulouse, various epidemiological works and biological results regarding toxoplasma infection permitted us to study immunity in pregnant women. 66 to 70% are immunized. Incidence of acquired toxoplasmosis is 1 to 2 for 1,000 pregnancies. Carefully planned, regionalized programs with obstetricians and pediatricians are realized to prevent congenital toxoplasmosis. Epidemiological studies may be realized to estimate the prevalence and the incidence of congenital toxoplasmosis before such programs can be recommended on a national scale in tropical area. PMID- 3836770 TI - [Effect of pyrimethamine sulfadoxine (Fansidar) on an avirulent cystogenic strain of Toxoplasma gondii (Prugniaud strain) in white mice]. PMID- 3836771 TI - [Shadows and lights of malaria prevention in Africa]. AB - According to the statistics provided by the World Health Organization in 1984, some 6.5 million cases of malaria were notified in 1982, an improvement in comparison with 1981, when the number of cases was 7.8 million. But these figures are incomplete and statistical data from sub-Saharan Africa are not included in the total. Out of the population of the world (in 1982) of 4,600 million about 2,100 million live in areas where malaria had never occurred or where indigenous malaria had disappeared. Some 2,100 million people live in areas where specific measures have greatly decreased the incidence of malaria. However, about 370 millions live in areas where no antimalaria activities took place, with the exception of some urban centres. On the African continent in countries north of the Sahara, out of the population of 100 million about 75 million are in areas, which were malarious 20 years ago, but today the amount of disease has been drastically reduced. The number of cases notified was 561 in 1982, against 482 in 1981, and most of them had been imported from tropical Africa. In Africa south of the Sahara out of 400 millions at least 350 million people live in malarious areas, where the prevalence of the disease has not changed for many years. The number of clinical cases of malaria has been estimated as between 70 and 100 million, with a mortality of about 1 million among small children.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836772 TI - [Malarial problems and the trans-Saharan highway]. AB - In Maghreb, malaria eradication is near. In particular, no indigenous strains of P. falciparum have been found for ten years. The few remaining cases of malaria are of P. vivax. In the Sahelian area, on the other hand, malaria eradication failed with P. falciparum and the efficient vector A. gambiae (s.l.). Until now, the Sahara desert separated these two areas. With construction of a trans-saharan highway, the situation is very different. Now, tropical malaria circulates in Maghreb and Sahara oases in the same way as vectors. However, it seems that local vectors in Maghreb (A. labranchiae) and in Sahara (A. multicolor et A. sergenti) are not efficient vectors for tropical strain of P. falciparum. These observations must be confirmed because there are probably different anopheles populations with different vectorial capacity in the same anopheles species and different plasmodial strains with different infective capacity in the same plasmodial species. Meanwhile a dangerous potential situation exists, the temporary or permanent colonization of some stations in Sahara, in Maghreb (?) by A. gambiae the efficient vector of tropical strains of P. falciparum. From now on, important efforts of Prevention and Control for vectors and malaria must be developed with large intensity in Saharan oases and in Maghreb. PMID- 3836773 TI - [Surveillance of malaria in the Algerian Sahara]. PMID- 3836774 TI - [Recent data on hemorrhagic fevers in West Africa]. AB - Among the viruses which can provoke human haemorrhagic fevers, the Congo-Crimean Haemorrhagic Fever and Rift Valley Fever viruses have been discovered relatively recently in West Africa. Two human cases of severe haemorrhagic fever have been connected with Congo-CHF, in Mauritania and Burkina-Faso. The epidemiological enquiry performed in Mauritania, consequent to the appearance of the first case, has demonstrated that the patient had been contaminated by contact with camels. Twelve strains of Congo-CHF virus have been isolated from ticks taken on bovines and dromedaries in that area. The serological enquiries realized on man show that the incidence is relatively feeble; on the other hand, among animals, one finds a large distribution among small ruminants in Mauritania as well as in Senegal. The recent realization of a complete identity between the Zinga and Rift Valley Fever viruses has broadened the geographical distribution of this virus to the whole of inter-tropical Africa including Madagascar. The serological enquiries realized among men and animals in areas where the virus has been isolated from wild vectors show that the presence of antibodies is faintly superior. On the other hand, in southern Mauritania, the virus prevails among men, who get antibodies of the IGM type, which proves a recent circulation. The immunological enquiries on camels seem to corroborate these data. The Rift Valley Fever epidemic which broke out in 1978 among the human and animal populations of Egypt has, apparently, been connected with the passage of camels coming from Sudan through the intermediary halting-place of the Assuan dam.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3836775 TI - [Seroepidemiology of hepatitis B in an infant population in central Tunisia]. PMID- 3836776 TI - [Prevalence of markers of viral hepatitis B in northern Cameroon]. AB - The authors report the results of a sample survey made in January 1985 in a Northern Cameroon Division following the observation of a very high mortality rate by serious jaundice in 1983 and 1984. Within a representative population sample of 395 persons of more than 4 years old, they observed that: 100 were HBs antigen carriers (detected by ELISA), 25.3% +/- 5.5%, 19 were HBe antigen carriers (RIA), 4.8% +/- 2.4%, and 202 were HBs antigen or HBs antibody carriers: 51.1% +/- 6.5%, There was only one carrier of delta antigen. There is no difference in HBs antigen bearing according to sex or age, but HBe antigen appears to be more frequent among young people. PMID- 3836778 TI - [Campylobacter in acute diarrhea of infants]. AB - Investigation of C. jejuni, C. coli has been realised on 280 babies in Tunis, 123 of them do not present any diarrhea. The global frequency of campylobacter isolated is 4.64%. Concerning babies with diarrhea, the frequency is 4.45%, whereas it is 4.86% in the group without diarrhea. A similar frequency of C. jejuni and C. coli appears in the two groups. PMID- 3836777 TI - [Practical use and interpretation of viral hepatitis B markers and hepatic biopsy in HBs Ag carriers and at the chronic hepatitis stage]. AB - Practical significance of serologic markers for hepatitis B virus and interpretation according to clinical stage and liver biopsy pattern in HBs Ag positive patients with or without chronic liver disease. Vidarabine is the treatment of choice actually available for patients with chronic persistent or chronic active hepatitis who demonstrate active replication of the virus. The authors review the technics actually necessary: to diagnose chronic hepatitis, to screen for hepatitis B virus, to demonstrate active replication of the virus. They report that these actually routine technics can be available in any biochemistry or pathology laboratory including those in tropical areas. PMID- 3836779 TI - [Evaluation of vermifuges]. PMID- 3836780 TI - [Treatment of acute pneumopathies in a tropical zone]. AB - This treatment must take into account the high frequency of Streptococcus pneumoniae and Haemophilus influenzae which represent over 50% of causes of all bacterial pneumopathies, up to 75% in children under 2 years old. Benzyl penicillin and injectable delayed action penicillin are drugs of choice and early utilisation reduces considerably the mortality. Other possible antibiotics are macrolides because of their wide range of efficacy and low toxicity, and chloramphenicol which is still one of the best drugs against penicillin-resistant Haemophilus influenzae. PMID- 3836781 TI - [Pharmacokinetics of prophylactic doses of chloroquine in 10 healthy volunteers. Preliminary results]. PMID- 3836782 TI - [Activity of Anti-Yellow Fever Vaccination Centers]. PMID- 3836783 TI - [Atlas of the anatomy of the head in the neuro-ocular plane: presentation]. PMID- 3836784 TI - [An etiology of anterior segment diseases not to be ignored: leprosy]. PMID- 3836785 TI - [Indications, technic and results of the use of SF6 with vitrectomy in the treatment of retinal detachment]. PMID- 3836786 TI - [Treatment of noninfectious posterior uveitis with a new immunomodulator, cyclosporin A: initial results]. PMID- 3836787 TI - [Comparison of several visual parameters after a year of work at terminal screens]. PMID- 3836788 TI - [IgE and conjunctival allergy. Comments based on the 1st 1380 assays]. PMID- 3836789 TI - [Dyslexia, a disorder of visual neurophysiology]. PMID- 3836790 TI - [New apparatuses for campimetric retinography]. PMID- 3836791 TI - [Retinoblastoma with multiple metastases. Apropos of a case with unexpected remission]. PMID- 3836792 TI - [Trilateral retinoblastoma]. PMID- 3836793 TI - [Retinal changes in 2 patients after orbital irradiation]. PMID- 3836794 TI - [Acute bird-shot chorioretinal ischemia]. PMID- 3836795 TI - [Unusual aspect of vitreous posterior detachment]. PMID- 3836797 TI - [The triangle of colors X-Y-Z: authentic or deceptive?]. PMID- 3836796 TI - [Fuchs' syndrome and cicatrix of toxoplasma chorioretinitis. Pathogenetic discussion]. PMID- 3836798 TI - [Serous detachment of the retina and congenital malformations of the papilla. Apropos of a case]. PMID- 3836799 TI - [Use of the technic of air-serum exchange after vitrectomy in the surgical treatment of retinal detachment]. PMID- 3836800 TI - [Bilateral diffuse retinal arteritis with multiple ectasias]. PMID- 3836801 TI - [Surgery of the adrenal glands. Apropos of 179 cases]. PMID- 3836802 TI - [Kaposi-Perrin sarcoma. An uncommon diagnosis in tumor of the rectum]. PMID- 3836803 TI - [Surgical treatment of stenoses of the celiac trunk caused by the arcuate ligament of the diaphragm. Long-term results]. PMID- 3836804 TI - [Bronchoesophageal fistula, 1st sign of Hodgkin's disease. Apropos of a case]. PMID- 3836805 TI - [From day hospitalization to strictly ambulatory care in surgery of the hand. Apropos of 10 years' experience]. PMID- 3836806 TI - [Acromioplasty]. PMID- 3836808 TI - [Surgery of the adrenal glands]. PMID- 3836807 TI - [Pheochromocytoma. Apropos of 27 cases in Vaud Canton from 1926 to 1985]. PMID- 3836809 TI - Photoperiodism, melatonin and the pineal. PMID- 3836810 TI - Photoperiodism, melatonin and the pineal: it's only a question of time. PMID- 3836811 TI - Generation of melatonin rhythms. AB - In mammals, information about the environmental photoperiod is relayed from the retina to the suprachiasmatic nuclei (SCN) in the anterior hypothalamus and via the sympathetic nervous system to the pineal gland where it influences the secretion of melatonin. Light plays a dual role: to suppress the release of melatonin and to entrain the circadian rhythm generators in the SCN, which govern the endogenous melatonin rhythm. Under normal daily light-dark cycles melatonin secretion is confined to the dark period. In most photoperiodic species the daily pattern of secretion changes in response to changes in daylength, and this acts as a physiological time cue in the brain for the control of seasonal cycles in reproduction, moulting and other processes. To illustrate the underlying mechanisms that control the melatonin rhythm, results are presented from five experiments in which the blood plasma concentrations of melatonin were measured in Soay rams exposed to a variety of artificial changes in photoperiod including a switch from 16L:8D (16 h light:8 h dark) or 8L:16D to constant darkness, a switch from constant darkness to 1L:23D and a switch from 16L:8D to a 25 h or 23 h light-dark cycle. The results confirm that the melatonin rhythm is generated endogenously and will free-run under constant darkness with a period close to 24 h for at least 10 days. The rhythm can be entrained by exposure to IL:23D with the end of the light period acting as the 'melatonin-on' signal, and phase-shifts in the melatonin rhythm can be induced by phase-shifts in the light-dark cycle. The period for which melatonin concentrations are high each day (melatonin peak) also varies in duration under the different photoperiods, as a result of both the suppressive and the entraining effects of light. Two models explaining the control of melatonin peak duration are discussed. PMID- 3836812 TI - The role of rhythms in the response to melatonin. AB - Rhythmicity of melatonin secretion is critical to the regulation of mammalian reproduction by daylength. In the ewe, photoperiod determines ovarian function by modulating the ability of oestradiol to suppress pituitary secretion of luteinizing hormone (LH). This influence of daylength depends in turn upon the pineal gland, which mediates photic control of the frequency at which the brain stimulates the pituitary to secrete gonadotropin. Photoperiod determines the pattern of melatonin secretion, most notably setting the duration of the nightly elevation in serum concentrations. Replacement of melatonin in pinealectomized ewes drives responsiveness to oestradiol negative feedback; LH levels are determined by the duration of the nightly melatonin infusion rather than by the photoperiod to which ovariectomized, oestradiol-implanted pinealectomized ewes are exposed. Refractoriness to stimulatory and inhibitory photoperiods may reflect circannual modulation of the responsiveness of neuroendocrine mechanisms to melatonin signals of a given duration. PMID- 3836813 TI - Role of the pineal gland in the photoperiodic control of reproductive and non reproductive functions in mink (Mustela vison). AB - Mink are long-lived mammals that exhibit seasonal changes in body weight, gonadal activity, pelage and plasma prolactin levels. Mating in February-March is followed by an obligatory delay in implantation during which the corpora lutea stay quiescent. All these events are controlled by annual variations in daylength. The role of the pineal gland and its product, melatonin, in conveying photic information to the target organs has been studied. Pineal denervation by bilateral ablation of the cervical superior ganglia rendered the mink unresponsive to artificial manipulations of the daily photoperiod: prolactin and progesterone secretion and the spring moult were no longer stimulated by long days or inhibited by short days in pregnant females; in the same way the increase in body weight in late summer and the autumn moult were no longer advanced by artificial shortening of the photoperiod. Pinealectomy seemed to desynchronize body weight, prolactin and moulting cycles from those in intact mink. Melatonin injections reproduced the effects of short days on hormonal secretion during the delayed implantation period. Melatonin capsules given to males during the phase of testicular activity delayed the decrease in body weight, testicular regression and onset of the spring moult exactly as did short days. In contrast, melatonin administered during the phase of testicular inactivity triggered an increase in body weight, the onset of the spring moult and testicular recrudescence in this short-day breeder. These results support the hypothesis that in mink all photoperiodic signals are conveyed by the pineal gland. But although the pineal seems essential for the seasonal timing of the cycles, it does not modify the events themselves once they are initiated. PMID- 3836814 TI - Melatonin administration: effects on rodent circadian rhythms. AB - Previous research has demonstrated a lack of effect of pinealectomy upon the generation of rodent circadian activity rhythms and only a subtle effect upon their reentrainment after phase-shifts of the light-dark cycle. In contrast, our pharmacological studies on melatonin indicate that the pineal gland may be more important than hitherto believed. The main outcome of a preliminary pilot experiment on the effect of daily injections of melatonin, arginine vasotocin, melanocyte-stimulating hormone and a beta-blocker on rat free-running activity rhythms in constant darkness was that melatonin appeared to have entrainment properties. This was clearly demonstrated in a second experiment although entrainment did not occur until the onset of the activity rhythm coincided with the daily injection. In contrast, when melatonin was administered ad lib, in the drinking water to six rats housed in constant dim light, there was apparently a lengthening of the free-running period. The effects of 17 days of melatonin injections given at four different times of day to different groups of rats on re entrainment of activity rhythms after a 5 h phase-advance of darkness were assessed. Results were confounded by the response of some control rats. However, after an 8 h advance of darkness and daily injection at the time of day of the previous dark onset, melatonin-injected rats phase-advanced, whereas vehicle injected and uninjected control rats phase-delayed. Thus melatonin can alter the direction, but not necessarily the rate, of re-entrainment. The relevance of some of these findings with pharmacological doses of melatonin to the function of endogenous melatonin is discussed. PMID- 3836815 TI - Circadian rhythms and photoperiodism. AB - The circadian timing system plays a critical role in the regulation of seasonal modifications in reproductive function. By detecting and transducing changes in the day-length (photoperiod), the neural substrates of the circadian system, including the supra-chiasmatic nuclei of the hypothalamus, trigger reproductive activity or quiescence at the appropriate seasons of the year in photoperiodic species. The circadian system also plays a role in the expression of endocrine changes that occur with seasonal breeding. Surges in luteinizing hormone secretion in female hamsters, for example, are either expressed daily during reproductive quiescence or suppressed on three out of the four days of the cycle during the breeding season. By such mechanisms a daily timer can be used in the regulation of cyclic events of much longer period. PMID- 3836816 TI - Melatonin, light and chronobiological disorders. AB - Human plasma melatonin concentrations can be measured accurately and sensitively by gas chromatography-negative chemical ionization mass spectrometry. With this assay, we have shown that: in rats and in humans, plasma melatonin is exclusively derived from the pineal gland; propranolol and clonidine reduce melatonin levels in human; some blind people appear to have free-running melatonin secretory circadian rhythms; bright light can acutely suppress human melatonin production according to a linear fluence-response relationship; manic-depressive patients appear to be supersensitive to light, even when they are well; melatonin levels are greater in manic patients than in depressed patients; in experiments to test the clock-gate model and the hypothesized phase-response curve, two different effects of light appear to present in humans: an acute suppressant effect (mainly in the evening during long photoperiods) and an entrainment effect (particularly during the morning but also in the evening). When blood is sampled for measuring melatonin levels as a marker for circadian phase position, bright light should be avoided after 5 p.m. (the dim light melatonin onset). Bright-light exposure in the morning appears to advance circadian rhythms, whereas bright-light exposure in the evening appears to delay them. Once a patient has been 'phase typed' (phase-advanced vs. phase-delayed), predictions can be made about whether morning or evening light would be more effective in treating the sleep or mood disorder. PMID- 3836817 TI - Melatonin and affective disorders. AB - The pineal hormone melatonin has a clear 24 h rhythm with a nocturnal peak. Serum melatonin concentrations have been reported to be decreased in subgroups of patients with affective disorders. When clusters of clinical items were correlated with the maximal nocturnal melatonin levels, significant negative regressions were found for items interpreted as retardation symptoms, especially those related to emotional or conative functions. These results point to the possibility of a 'low melatonin syndrome' in depression, characterized by low nocturnal serum levels of melatonin, an abnormal dexamethasone suppression test, a disturbed 24 h rhythm in cortisol levels and a less pronounced daily and annual cyclic variation in depressive symptomatology. Healthy persons show a rebound increase of nocturnal serum melatonin levels following evening suppression by bright light. One hour of the same light exposure did not alter the nocturnal melatonin levels in patients with major depressive disorders. This indicates a possible alteration in the pineal response to environmental lighting in depressed patients. The studies reported support the hypothesis of a decreased pineal function in some types of affective disorders. PMID- 3836818 TI - Some effects of melatonin and the control of its secretion in humans. AB - Whether or not the pineal gland has a significant physiological role in humans is not known. There has nevertheless been speculation about the potential therapeutic use of melatonin (in view of its hypnotic and possible zeitgeber properties) in conditions such as insomnia and jet lag, and in shift-workers. Our work concerns the effects of melatonin administration in humans and the interactions between melatonin and other circadian variables. Chronic (one month), timed (1700 h), low-dose (2 mg daily) melatonin administration to normal subjects without environmental control consistently increased evening fatigue and slightly modified the 24 h prolactin rhythm without effect on cortisol, growth hormone, luteinizing hormone, thyroxine, testosterone or self-rated mood. In five out of 11 subjects the endogenous melatonin rhythm was advanced by one to three hours. During fractional desynchronization of circadian rhythms by increasing imposed 'day' length (26-29 h, 24 days, 500 lux), 5 mg melatonin per os at lights out in two subjects resulted in better entrainment of the fatigue rhythm to the zeitgeber than in five out of six control subjects, without major consistent effects on other measured circadian variables. Using a new radioimmunoassay for 6 hydroxymelatonin sulphate (aMT6s), the major melatonin metabolite, we have shown that the urinary aMT6s rhythm is closely correlated to that of melatonin in plasma and is completely suppressed by an acute dose of atenolol (100 mg per os), a peripheral beta-adrenergic antagonist. During fractional desynchronization by increasing imposed 'day' length in one subject and decreasing imposed 'day' length in two subjects, the urinary aMT6s rhythm behaved similarly to that of core temperature. The results suggest that fatigue (or alertness) may be entrained by melatonin, but whether critical performance rhythms can be suitably manipulated remains to be clarified. It is likely that melatonin production is linked to the so-called 'strong' circadian oscillator. PMID- 3836819 TI - Eyes--the second (and third) pineal glands? AB - The pineal gland, the retinas and perhaps other tissues as well may in some species produce melatonin that appears in significant quantities in the circulation. In at least one species, Japanese quail, the circadian rhythm in the levels of circulating melatonin reflects contributions from both the pineal and the retinas; in other species circulating melatonin may come exclusively from the pineal or perhaps only from the eyes. Comparative behavioural and physiological data from several bird and lizard species indicate that retinas and pineal glands fulfil similar endocrine roles. Current evidence suggests that in iguanid lizards either retinas or pineal glands, but not both in the same species, have important regulatory influences on circadian organization. This suggests that it should be relatively easy to influence the melatonin-forming ability of a tissue by natural selection, an interpretation bolstered by our finding that the ability to synthesize melatonin has been inadvertently eliminated in the pineal glands of laboratory mice, presumably by the selection involved in producing inbred strains. The genetics of melatonin synthesis in mice is briefly discussed. PMID- 3836820 TI - Mammalian pinealocytes: ultrastructural aspects and innervation. AB - In the mammalian pineal gland it is notoriously difficult to relate structure to function. The pineal-specific cells, the pinealocytes, contain only inconspicuous numbers of secretory granules, and the variable amounts of smooth and rough endoplasmic reticulum also do not point to a particular function. In addition to these widely known cellular components, pinealocytes contain organelles, the so called 'synaptic' ribbons, histophysiological studies of which provide important insights into the structural and functional complexity of the organ. As synaptic ribbons may be involved in neuronal functions of pinealocytes it is notable that these organelles are structurally heterogeneous. Ribbons fall into at least two categories: rod-like (RSR) and sphere-like (SS) structures. RSR and SS usually do not lie within the same pinealocyte profile and appear to be regulated by different mechanisms. It is conceivable that they are important components of the biological clock system. These findings are related to our knowledge of the innervation of the mammalian pineal gland and to electrophysiological characteristics of pinealocytes. PMID- 3836821 TI - Photoperiodism in birds. AB - Birds show a circadian rhythm in melatonin secretion and, as expected, the pattern of output changes with photoperiod. Somewhat surprisingly then, in view of the mechanisms in mammals, birds do not seem to use this seasonal message in the photoperiodic control of reproduction. Some further experiments are needed, however, because in birds the pineal gland is not the only source of melatonin. Another difference from mammals is that birds detect the photoperiodic light not with the retina but by brain photoreceptors, which probably lie in the hypothalamus. An action spectrum for these receptors has now been obtained for the quail and this shows a peak absorption at 492 nm, suggesting that the photoreceptor is rhodopsin-based. The sensitivity of the brain receptors to 500 nm light was calculated at 2 X 10(4) photons mm-2s-1. For light to induce the photoperiodic response it must be interpreted by the bird's clock as a long day. This happens if the light falls 12-20 h after dawn and coincides with a rhythm of photosensitivity. The subsequent neuroendocrine response to the light signal is both precise and relatively long-term. A single 4 h light pulse initiates a wave of gonadotropin secretion lasting for 10 days. The light stimulus can be replaced by a brief (2 min) daily electrical stimulus given to the hypothalamus 10-12 h after dawn. Over the next few years it should be possible to disentangle further the neural processes involved. PMID- 3836822 TI - [Myasthenia gravis--clinical and laboratory analysis of 120 cases]. PMID- 3836823 TI - [Double antibody immunoprecipitation assay of serum acetylcholine receptor antibody in patients with myasthenia gravis]. PMID- 3836824 TI - [Serum pyruvate kinase (PK) in the diagnosis of neuromuscular diseases]. PMID- 3836825 TI - [Preliminary study of serum enzymology in Duchenne muscular dystrophy]. PMID- 3836826 TI - [Crises in myasthenia gravis--a clinical analysis of 26 cases]. PMID- 3836827 TI - [Relation between congenital myotonia and myotonic dystrophy]. PMID- 3836828 TI - [Phenomenon of the route of sensation propagation and the cerebral cortex]. PMID- 3836829 TI - [A long-term follow-up study on 35 cases of affective psychosis]. PMID- 3836830 TI - [Heterogeneity of manic-depressive psychosis of early and late-onset]. PMID- 3836831 TI - [Schizophrenic symptoms and affective disorders]. PMID- 3836832 TI - [Preliminary results in the trial use of two diagnostic illness criteria for schizophrenia]. PMID- 3836833 TI - [Problems on the criteria of the course of diseases in the diagnosis of schizophrenia]. PMID- 3836834 TI - [Multi-dimensional and multi-axial diagnosis viewed in using the classification and diagnostic criteria of mental diseases]. PMID- 3836835 TI - [Hyperkinetic syndrome in children: clinical and neuropsychological study of 814 cases]. PMID- 3836836 TI - [The diagnostic significance of the determination of SIgA in the sputum and saliva in lung cancer]. PMID- 3836837 TI - [Observation of the human basophil degranulation test in asthmatic patients]. PMID- 3836838 TI - [Inspiratory mouth occlusion pressure and ventilatory chemoresponsiveness in asthma]. PMID- 3836839 TI - [An approach to the criteria of the roentgenological diagnosis of chronic cor pulmonale: an analysis of 83 cases]. PMID- 3836840 TI - [The influence of inspiring 30 per cent oxygen on expiratory flow and cyclic nucleotides of the plasma in the patients with chronic obstructive pulmonary disease with hypoxemia]. PMID- 3836841 TI - [The clinical evaluation of FEV1% in COPD patients]. PMID- 3836842 TI - [Therapeutic observations on 232 cases of intrathoracic lymph node tuberculosis in children]. PMID- 3836843 TI - [Radioimmunoassay of the antitumor drug--methotrexate (MTX)]. AB - The specific efficient anti-MTX antibody was obtained from the rabbits immunized with an artificial antigen produced by condensing MTX and bovine serum albumin in water-soluble carbodi-imide. The affinity constant (Ka) of the antibody is 1.8 X 10(9) L/mol. The rapid, sensitive and specific radioimmunoassay was developed with the tritium-labeled MTX as the tracer and the dextran-coated charcoal as the separating reagent. The concentration of MTX was measured within 1.5 hours and the lowest detectable level was 0.1 ng using only 10 microliter of serum or other biological fluids. Folic acid and its derivatives, hormones and other chemotherapy drugs have no influence on this assay. The method has an acceptable accuracy and precision: the recovery is 96.5%; the coefficients of variation (CV) within and between assay are 8% and 14%. The method is successful for the monitor of the MTX concentration in patient's plasma and study of its metabolism and pharmacokinetics. PMID- 3836844 TI - [Clinical and pathological characteristics of estrogen receptor-positive breast cancer]. AB - Estrogen receptor (ER) was measured in 275 samples from 170 patients with breast cancer by dextran-coated charcoal assay. The results showed that the ER positive rate was 51.2%. The ER status of female patients was not related to age or menopause. The positive rate was lowest in AB blood type. The distribution of positive patients in all types was similar to that reported by Japanese authors. The DNA levels of ER positive cancers were relatively lower than those of negative ones. Pathological examination of cancer tissue indicated that ER positive cancer is well differentiated. The 3 year disease-free rate and 4 year survival rate are both high in ER positive patients than that in the negative patients. Knowledge of ER status is helpful in planning the treatment of breast cancer. PMID- 3836845 TI - [Effect of cyclophosphamide on the bone marrow hematopoiesis in the mouse]. AB - This paper reports the effect of cyclophosphamide on the bone marrow hematopoiesis in the mouse. Cyclophosphamide 0.12 mg/g body weight was injected into the mice once and the observation lasted for 2 weeks. After the injection, peripheral leukocytes were reduced to the lowest level on day 4 and then increased higher than the control on day 7 to 14. The number of nucleated cell in the bone marrow was the lowest at the 48th hour and gradually became normal within two weeks. The pluripotent hemopoietic stem cells--CFU-S (colony forming unit-spleen) were depleted abruptly in 24 hours, then reproliferated exponentially to a peak on day 3, followed by a second decrease and came back to normal level on day 11 to 14. The changes of granulocytic progenitor cell CFU-D (colony forming unit-diffusion chamber) and CFU-C (colony forming unit-culture) were quite similar to that of CFU-S but their proliferation peak was on day 4. The peripheral leukocyte drop was slower and the return to normal was earlier than the hemopoietic cells. So the recovery of leukocyte count does not mean a real reconstruction of hematopoiesis. The bone marrow stroma observed by CFU-F (colony forming unit-fibroblastoid) assay and marrow microcirculation were also damaged and did not recover to normal during the observation. The bone marrow stroma and microcirculation showed a more serious damage. PMID- 3836846 TI - [Malignant transformation of mouse bone marrow cells induced in vitro by 60Co gamma-ray irradiation]. AB - Mouse bone marrow cells were irradiated in vitro with 300, 200 and 100 rad of 60Co gamma-ray. Morphological transformation ensued from day 42 after exposure, but only in cells receiving 300 rad. Malignant transformation appeared in the 2nd generation in the subcultures. Some biological characteristics of malignant transformation were observed as follows: The attaching rate was 40.0%. Malignant transformation rate was 0.10-0.45%; Some colonies and clusters were formed in the semi-solid agar medium; There was no cell proliferation or colony formation in anti-ouabain inhibition test which implies that no mutation took place in the malignant transformation cells; Cytochalasin B rendered the cells to form a large number of multinuclear cells; Obvious chromosome aberration in number and structure was observed; Subsequent induction of fibrosarcomas in sites of subcutaneous inoculation of the malignant transformed cells in immunosuppressed mice. The results show that mouse bone marrow mesenchymal cells can undergo malignant transformation by large dose of gamma-ray irradiation in vitro. Criteria of malignant transformation: some clusters of cells formed in the semi solid agar medium, multinuclear cell formation by action of cytochalasin B, and tumor mass induced in the location of inoculation. PMID- 3836847 TI - [Clinical and pathologic staging in 100 cases of laryngeal cancer]. AB - A retrospective histopathologic study of 100 specimens of laryngeal cancer treated by laryngectomy were carried out to test the accuracy of the clinical staging. The findings indicated that the inaccuracy rate of the preoperative staging was 46%, supraglottic type 46.7%, glottic 21.1%, subglottic 50% and transglottic 70.6%. Forty five cases were understaged and one overstaged. The erroneous staging was resulted from the under-estimation of the depth of tumor invasion, such as the invasion of the laryngeal framework, preepiglottic space, anterior commissural area and paraglottic space, etc. In this paper the relationship between cell differentiation, growth pattern and "P" staging are analysed. We attempt to demonstrate that "barrier" of the larynx can limit the invasion of carcinoma to various degrees. This paper also presents the follow-up data of 63 patients to three years after operation. PMID- 3836848 TI - [Circulating immune complex and cancer in the digestive system]. AB - The zone electrophoresis on agarose was used to determine the incidence of circulating immune complex (CIC) in blood of 60 patients with cancer in the digestive system and 42 healthy donors. The correlation between cancer and CIC was investigated. The positive results is 75% in patients and 14.2% in the control. There is a significant correlation between the CIC and the stage of lesion. Higher incidence was observed in patients with stage I and II lesions (100% and 85%) than those with stage III lesions (40%). Among 13 positive patients, 5 with stage I lesion became negative and 8 with stage II or III lesions were still positive after operation. These data suggest that the zone electrophoresis be a reliable assay for the diagnosis and prognosis of patients with digestive system cancer. To measure the CIC periodically may be useful for the follow up of the tumor condition before and after treatment. PMID- 3836849 TI - [Adenoma of the gallbladder--pathologic analysis of 14 cases]. AB - Adenoma of the gallbladder is a rare benign tumor. We found fourteen in 2600 surgical specimens of cholecystectomy, an incidence of 0.55%. Three are male and eleven female Adenoma of the gallbladder is divided into two types: papilloma and tubular. Adenoma of the gallbladder might be a precancerous lesion. We found atypical hyperplasia in four and carcinomatous change in two of these fourteen adenomas. All the patients were complicated by chronic cholecystitis, and twelve by one or several stones. Chronic inflammation and the stone formation might be the etiological factors of adenoma of the gallbladder. In this paper, the histological features and differential diagnosis are discussed. We had also observed the mucinous change of this adenoma, atypical hyperplasia and carcinomatous degeneration by histochemical means. PMID- 3836850 TI - [Cytoplasmic estrogen and progesterone receptors in primary cervical carcinoma- relation between clinical aspects and histopathology]. AB - The measurement of cytoplasmic estrogen and progesterone receptors (ERc and PRc) as markers of specific hormone in the human breast and endometrial cancer leads to the application of receptor levels as a means in clinical management. Comprehensive investigations have not been completed in invasive cervical cancer. From 1977 to 1981, 39 cases of primary cervical carcinoma were assayed as to the presence or absence of ERc and PRc by the saturation point dextran-coated charcoal method. The level of ERc and PRc of various clinical stages, histological types, histological grades, menstrual status, age and survival was compared each other. Positive and negative receptor groups were proposed using more than or equal to 5 fmol/mg cytosol protein for ERc ane more than or equal to 10 fmol/mg cytosol protein for PRc as discrimination points. Survival of the measured patients was computed by the product-limit analysis according to Kaplan Meier. A statistical difference between the PRc (+) and PRc (-) group in survival was noted by the Mantel-Cox test (P = 0.049). There was a longer survival in the PRc (+) patients. As to premenopausal or menopausal status, a statistical difference between the PRc (+) and PRc (-) group in survival was only observed in the premenopausal patients. The demonstration of the relationship between the PRc level and survival in cervical carcinoma would certainly be clinical significant to identify the high-risk patients for failure as treated by routine radiotherapy or surgery. PMID- 3836851 TI - [Carcinoma of the female urethra]. AB - From 1962 to 1980, 24 patients with primary urethral carcinoma and 1 vulval cancer involving the urethra were treated in our hospital. In this series, the mean age was 52 years. 23 lesions in the distal (anterior) urethra were all diagnosed preoperatively. Pathological classification were as follows: squamous cell carcinoma 16, adenocarcinoma 3, transitional cell carcinoma and undifferentiated carcinoma 4. The chief method of treatment were resection of the tumor and reconstruction of a new urethra, using bladder flap in two forms: abdominal urethra and reconstructed urethra in the original position. Preoperative or postoperative irradiation was given in one third of the patients. 17 patients have shown satisfactory results in the follow-up. The 7 and 10 year survival rates are 36% and 18% among 11 patients who are living and well. PMID- 3836852 TI - [Pathologic characteristics and the rational surgical treatment of rectal carcinoma]. AB - 122 cases with rectal carcinoma were operated by radical resection. The 5 year survival rate was 60.3%. The patho-biological characters of the rectal carcinoma were studied. The results showed that the prognosis of the rectal carcinoma was much better than that of gastric carcinoma due to the fact that most of the rectal carcinoma was localized with low metastatic rate to the lymphatics and its growth patterns are pushing and nest-like. For rational surgical treatment, it is necessary to have a clear understanding of the patho-biologic characters, staging and location of the rectal carcinoma preoperatively. PMID- 3836853 TI - [Improved technic of a stapling device and the prognosis of rectal carcinoma]. AB - From Sep. 1977 to Mar. 1982, 150 patients with rectal carcinoma were operated with the mechanical staple suture technique and serious complications, e.g. anastomotic leakage were avoided. All the cases have been followed more than one year. The 1, 2, 3 and 4 year survival rates were 94%, 84%, 76% and 63%, respectively. Removal of the primary tumor in the presence of hepatic metastasis has some beneficial effect after operation. A better result is achieved as compared with those reported by other authors at home and abroad. PMID- 3836854 TI - Inhibition of histalog-stimulated gastric secretion by 40 749 RP, a new long acting gastric antisecretory agent. AB - 40 749 RP, an N-methyl-2-(2-pyridyl)-2,3,4,5-tetrahydro-2-thiophene carbothioamide derivative, is already known as a potent gastric antisecretory agent in animals and in man. In order to determine its duration of action, its activity was investigated on Histalog-stimulated gastric acid secretion in 6 healthy volunteers. The efficacy of a 2 mg/kg dose, compared with that of placebo, was potent, and remained the same when the drug was ingested 6 h before stimulation instead of 1 h. The duration of action of 40 749 RP is therefore longer than 6 h. PMID- 3836855 TI - Effect of sulglycotide on gastric bicarbonate secretion in humans. AB - The effect of sulglycotide, a cytoprotective agent with a healing effect on ulcers, on gastric bicarbonate secretion in humans was evaluated. Fifteen healthy volunteers were treated with sulglycotide 400 mg t.i.d. for 10 days. Before and after treatment the bicarbonate content of basal gastric juice was determined by Feldman and Barnett's method. Sulglycotide was found to increase significantly (p less than 0.0001) basal HCO3- production from the human stomach, thus strengthening the gastric mucosal defences. It was concluded that the cytoprotective and therapeutic properties of the drug are partially related to stimulation of gastric alkaline secretion. PMID- 3836856 TI - Hexaprazol antagonism to gastric electrical potential fall by acetylsalicylic acid in rat. AB - Hexaprazol was tested against the gastric barrier breaking effect of aspirin (ASA), using the electric potential difference (PD) test in rats without pyloric ligation. The activity of hexaprazol was evident at a dose lower than the antisecretory one and also at the same range of antiulcer doses. The drug's activity in reducing the PD fall induced by ASA was compared with that of carbenoxolone, pirenzepine, cimetidine and ranitidine administered by the same route. Their relative activity, measured by AUB (area under baseline) index, followed this order: carbenoxolone greater than hexaprazol greater than pirenzepine greater than cimetidine greater than ranitidine. Measured by RI (irritancy index) inhibition, the order of activity was similar: carbenoxolone greater than hexaprazol greater than or equal to pirenzepine greater than cimetidine greater than ranitidine. It was demonstrated that hexaprazol had an anti-barrier breaker activity of marked intensity and duration; this efficacy was always dose-dependent. PMID- 3836858 TI - Changes in blood pressure and thermographic values resulting from use of a beta blocker plus diuretic and of an alpha-beta-blocker plus diuretic. AB - Changes in arterial blood pressure and in thermographic values were evaluated in two groups of 15 hypertensive patients, each of which was treated, on a random basis, with a combination of atenolol plus chlorthalidone or a combination of labetalol plus chlorthalidone. Both combinations produced a statistically significant reduction in blood pressure values (p less than 0.01) with no changes in heart rate. Telethermographic investigations revealed the presence of hypothermia of the hands before treatment in all the hypertensive patients examined, but not in the control group (10 normal subjects with no vascular and/or hyperthermic disease). After one month of treatment, no changes in peripheral vascularization were observed in the group treated with atenolol plus chlorthalidone, except for 4 cases showing mild improvement, probably due to a reduction in peripheral resistance as a result of the treatment and to a consequent increase in blood flow in the area investigated. In the group treated with labetalol plus chlorthalidone, on the other hand, a substantial recovery of vascular flow was observed in 12 patients as a result of the treatment, while the remaining 3 patients showed a fair degree of improvement (2 degrees C). Both preparations lent themselves to simplified administration regimens with good patient compliance and no adverse reactions. PMID- 3836857 TI - The effect of cimetidine on the pharmacokinetics of salicylic acid. AB - The pharmacokinetics of the interaction between salicylic acid and cimetidine was investigated in 11 healthy male and female volunteers. The plasma concentrations of total and free salicylic acid were measured. The kinetic disposition of salicylic acid after multiple administration of cimetidine (1 g per day) showed two modifications: the elimination rate was slower and plasma clearance was reduced. The corresponding area under concentration-time curves was always significantly greater. These differences were the same in both sexes. The rate of absorption, peak salicylate concentration and plasma protein binding of salicylic acid in the presence of cimetidine were not changed. PMID- 3836860 TI - Susceptibility of anaerobic bacteria to metronidazole. A bacteriological and clinical study. AB - The activity of metronidazole was studied by the diffusion method using two discs on a model group of 40 anaerobic bacterial strains isolated recently from clinical specimens. The minimal inhibitory concentrations (MICs) were determined by the dilution method and regression curves by the method of minimum square errors. Some 82.5% of bacteria of the model group were susceptible to metronidazole. All the routinely isolated anaerobes (582 strains) were tested with metronidazole over a period of 20 months. Susceptibility was recorded in 469 strains (80.6%). The clinical study was carried out on two groups of inpatients with bacteriologically confirmed mixed aerobic and anaerobic infections. Subjects in Group 1 (25 patients) were given clindamycin and gentamicin and those in Group 2 (30 patients) metronidazole and gentamicin. The results showed that the two combinations of drugs had comparable effects. PMID- 3836859 TI - Evaluation of a new pharmaceutical form of nimesulide for the treatment of influenza. AB - In 39 outpatients suffering from a seasonal epidemic influenza, the antipyretic, analgesic and anti-inflammatory activity of nimesulide granules was compared with that of aspirin + vitamin C granules. The drugs were administered b.i.d., dispensed in one-dose sachets containing either 100 mg of nimesulide or 500 mg aspirin + 300 mg vitamin C. The efficacy of the two treatments was comparable: both drugs brought about a rapid complete recovery in all treated patients. However, nimesulide was better tolerated: only one case of slight gastralgia was recorded in the nimesulide group vs the six cases of side-effects complained of in the aspirin + vitamin C group. PMID- 3836861 TI - Norfloxacin concentrations in seminal plasma measured by HPLC. AB - Eighteen healthy volunteers aged 22 to 37 (average 30.44 +/- 4.11 years) seeking fertility evaluation at the Fertility and Sterility Centre of the Medical Clinic of the University of L'Aquila Medical School were studied for norfloxacin concentrations in serum, urine and seminal plasma 14-15 h after taking two 400 mg doses of the drug. The extraction of the biological fluids and the high pressure liquid chromatographic (HPLC) assay were performed following a method described previously (1), with seminal plasma samples processed in the same way as serum samples. The results in urine and serum substantially confirmed the figures already established for norfloxacin concentrations in such fluids. Seminal plasma levels (average 4.78 +/- 2.69 micrograms/ml) were about 5 times higher than the corresponding serum levels (average 0.89 +/- 0.59 microgram/ml). The authors believe that such concentrations, attaining a therapeutic range in the seminal plasma after only two 400 mg doses of norfloxacin, support its use as an effective chemotherapeutic agent in the management of male genital infections that frequently account for subfertility conditions in young patients. PMID- 3836862 TI - Ticarcillin-clavulanic acid therapy in severe infections. AB - Twenty patients with severe infections were treated with a fixed combination of ticarcillin + clavulanic acid. Nineteen of them had severe underlying diseases. Fifteen were bacteraemic; four of these were in shock. Eleven were infected with microorganisms resistant in vitro to ticarcillin. Eleven were clinically cured, 6 improved and 3 failed to respond, the latter being infected with ticarcillin resistant microorganisms (2 E. coli, 1 P. mirabilis). Six patients experienced side-effects, which were usually mild and reversible, consisting mainly of moderate elevation of serum transaminases. In one patient ticarcillin-clavulanic acid was stopped due to worsening of a pre-existing drug hepatitis. PMID- 3836863 TI - Multivalent treatment of skin diseases in infants and young children. AB - Forty-two infants and young children with skin diseases of various kinds were treated by the simultaneous application of a combination of three creams, the respective ingredients of which were beclomethasone dipropionate, sodium fusidate and ketoconazole. The treatment produced good results in 97.6% of cases, with eradication of pathogenic agents and satisfactory relief of symptoms. The combination was well tolerated in almost all cases, both locally and systemically, and no adverse reactions were reported. PMID- 3836864 TI - New prospects for research on cephalosporins. AB - The present paper reviews the newly-developed cephalosporins and considers their potential for filling the gaps left by earlier cephalosporins in terms of of spectrum of activity, pharmacokinetic parameters, development of resistance and tolerability. Research on narrow-spectrum cephalosporins, directed specifically against enterobacteria and Pseudomonas, on cephalosporins with a low inoculum effect and on oral cephalosporins is discussed. The chemical substitutions responsible for enhancing or reducing the activity of cephalosporins against various bacteria, for altering pharmacokinetic behaviour and for producing unwanted side-effects are described. PMID- 3836865 TI - The comparative activity of twelve 4-quinolone antimicrobials against gram positive and gram-negative anaerobes. AB - The minimal inhibitory concentrations (MICs) of twelve 4-quinolone antimicrobials were determined for the Bacteroides fragilis group (50), Bacteroides melaninogenicus (20), Bacteroides bivius (10), Fusobacterium spp. (10), anaerobic Gram-positive cocci (50) and Clostridium spp. (20). MICs were determined using an agar dilution technique in Mueller-Hinton agar supplemented with 10% lysed horse blood. The inoculum used was approximately 10(4) colony-forming units, contained in 10 microliter of Mueller-Hinton broth, which was applied to the agar plates using a multipoint inoculator. Following inoculation, plates were incubated at 37 degrees C for 48 h in an anaerobic atmosphere. The MIC of each antimicrobial for each isolate examined was determined as the lowest concentration of the antimicrobial which completely inhibited growth of the inoculum. The minimum concentrations required to inhibit the growth of 50% (MIC50) and 90% (MIC90) of the organism examined were also determined. All of the more recently synthesised 4-quinolones showed increased activity against the anaerobic bacteria used in this study. Ciprofloxacin and ofloxacin were the most active compounds examined (Bacteroides fragilis group MIC90 ciprofloxacin 4 micrograms/ml; ofloxacin 4 microgram/ml; Bacteroides melaninogenicus MIC90 ciprofloxacin 2 micrograms/ml, ofloxacin 2 micrograms/ml; Bacteroides bivius MIC90 ciprofloxacin 16 micrograms/ml, ofloxacin 32 micrograms/ml; Fusobacterium spp. MIC90 ciprofloxacin 2 micrograms/ml, ofloxacin 4 micrograms/ml; Clostridium spp. MIC90 ciprofloxacin 1 microgram/ml, ofloxacin 1 microgram/ml and anaerobic Gram-positive cocci MIC90 ciprofloxacin 4 micrograms/ml, ofloxacin 4 micrograms/ml). PMID- 3836866 TI - The kinetics in the rat of a new nitroimidazole derivative. AB - A new nitroimidazole derivative, N-(5-carboxy-5-amino pentane) carbamic ester of 1(2-hydroxyethyl)-2-methyl-5-nitroimidazole (APMN), was administered to rats by the following routes: i.p. and orally (100 mg/kg); i.m. (100 and 250 mg/kg). Plasma kinetics of the drug fit a monoexponential function with a half-life of 0.5 h and a volume of distribution of 555 ml/kg. In tissues the peak levels of the drug (at 0.5 h) were 700, 150 and 40 micrograms/g in kidney, liver and heart respectively and their disappearance rate was similar to that observed for plasma. Urinary excretion of the unmodified drug in 23 h was less than 30% of the administered dose. No APMN was found in plasma and urine after oral administration. PMID- 3836867 TI - Susceptibility of clinical isolates of gram-positive and gram-negative organisms to cefatrizine. AB - The in vitro activity of cefatrizine was evaluated against 294 Gram-positive and 270 Gram-negative bacteria isolated from clinical specimens. Cefatrizine had excellent activity against Gram-positive cocci, inhibiting all except enterococci at minimal inhibitory concentrations below 1 mcg/ml. Moreover, cefatrizine was an effective antibacterial agent for most major Gram-negative species. Cefatrizine activity was tested against 34 strains of H. influenzae and 37 strains of K. pneumoniae and compared with that of other orally administered cephalosporins. Cefatrizine MIC50 values were much lower than those recorded for cephalexin and cefadroxil. PMID- 3836868 TI - Determination of cefatrizine levels in blood, tonsils, paranasal sinuses and middle ear. AB - Levels of cefatrizine, a new oral cephalosporin, were determined in blood and in tonsils, paranasal sinus secretions and middle ear exudates from 18 patients with acute infections at these sites. Three and six hours after administration of 500 mg cefatrizine satisfactory levels of the antibiotic were found at all the sites examined. Levels in the tonsils and middle ear were higher than those in blood, while lower levels were recorded in nasal secretions. PMID- 3836869 TI - Determinations of tissue levels of cefatrizine in blood, lungs and bronchi. AB - A study was carried out in 12 patients, divided into two groups of 6, to determine tissue levels of cefatrizine in lung (group I) and bronchial secretions (group II) following a single oral dose of 500 mg. In group I, specimens of blood and lung tissue were collected after 2 h from one subgroup of 3 patients and after 3 h from the other subgroup of 3. Average levels were 8.5 and 7.0 mcg/ml for blood and 1.2 and 1.4 mcg/ml for lung tissue respectively. In group II blood and bronchial secretion concentrations were evaluated at the 2nd, 3rd and 6th hours from administration. Average values were 9.1 and 7.7 mcg/ml in blood at 2h and 3h respectively, whereas the average bronchial secretion concentration at the 3rd hour was 10.4 mcg/ml in the first subgroup. In the second subgroup the mean level in blood collected at the 2nd hour was 8.9 mcg/ml, and 2.5 and 4.1 mcg/ml respectively in blood and bronchial secretions at the 6th hour. Cefatrizine levels in bronchial secretions were higher than those in blood at both the 3rd and the 6th hour from administration: this kinetic peculiarity of the drug will doubtless play an important role in the therapeutic efficacy of cefatrizine. PMID- 3836870 TI - New perspectives in oral antibiotic therapy: cefatrizine. Conclusions. PMID- 3836871 TI - Copper salicylate complex: thermoregulatory and biochemical effects. AB - The antipyretic properties of copper (II) salicylate and its effect on plasma copper, iron, zinc and ceruloplasmin concentrations was investigated in adult rabbits at an ambient temperature of 21.5 +/- 0.5 degrees C. The experiments indicated that copper salicylate (200 mg/kg/h i.v.) was a more potent antipyretic than sodium salicylate given in the same manner and doses. This pharmacological activity was found on a model of experimental fever induced by i.v. injection of lipopolysaccharide Escherichia coli at a dose of 1 microgram/kg. Furthermore, unlike sodium salicylate, this copper complex caused a decrease in core temperature in normothermic rabbits. At the same time copper salicylate activated heat dissipation much more efficiently than the parent drug, as manifested by decreases in vasomotor tone and reversal of postpyrogen inhibition of RF. As was expected, treatment with copper salicylate increased plasma copper and ceruloplasmin levels in both normothermic and febrile rabbits. These increases did not lead to any disturbances in iron and zinc concentrations. Neither salicylate affected postpyrogen falls in plasma iron concentrations. They both, however, delayed the appearance of zinc decreases in febrile rabbits. The results of this study suggest that copper modifies the thermoregulatory effects of salicylate. Moreover, the increased amounts of this metal do not seem to disturb seriously the ionic status of the blood. PMID- 3836872 TI - Organ tolerance of non-steroidal anti-inflammatory drugs: effect on liver cells. AB - Experimental studies in mice and in rats showed the good tolerance of a new non steroidal anti-inflammatory drug, flunoxaprofen, by normal and CCl4 damaged liver. The activity of an enzyme-inducing drug, such as phenobarbital, showed a greater increase after pretreatment with indomethacin than with flunoxaprofen or benoxaprofen. High doses of benoxaprofen and indomethacin significantly decreased bromosulphonphthalein excretion in rats with normal or CCl4 damaged liver; the effect was not observed with flunoxaprofen administered at the same dose as benoxaprofen. Moreover, benoxaprofen and indomethacin but not flunoxaprofen induced a significant increase of some serum liver enzymes in CCl4 poisoned rats. PMID- 3836873 TI - Research on coenzyme Q10 in clinical medicine and in immunomodulation. AB - Coenzyme Q10 (CoQ10) is a redox component in the respiratory chain. CoQ10 is necessary for human life to exist; and a deficiency can be contributory to ill health and disease. A deficiency of CoQ10 in myocardial disease has been found and controlled therapeutic trials have established CoQ10 as a major advance in the therapy of resistant myocardial failure. The cardiotoxicity of adriamycin, used in treatment modalities of cancer, is significantly reduced by CoQ10, apparently because the side-effects of adriamycin include inhibition of mitochondrial CoQ10 enzymes. Models of the immune system including phagocytic rate, circulating antibody level, neoplasia, viral and parasitic infections were used to demonstrate that CoQ10 is an immunomodulating agent. It was concluded that CoQ10, at the mitochondrial level, is essential for the optimal function of the immune system. PMID- 3836875 TI - Effective treatment with coenzyme Q10 of patients with chronic myocardial disease. AB - Nineteen patients with chronic myocardial disease (NYHA Classes III and IV) were given Coenzyme Q10 in a controlled double-blind cross-over study. All had either low or borderline levels of CoQ10 in their blood, and showed a significant change into the normal range with oral CoQ10 replacement. Eighteen patients reported improvement in activity tolerance with replacement therapy. Combined clinical observations, stroke volume measured by impedance cardiography, and ejection fractions calculated from systolic time intervals, all showed significant improvement in parallel with CoQ10 administration. This application of the principles of bioenergetics introduces a promising new dimension to the study and treatment of the complex problem of myocardial failure. PMID- 3836874 TI - Effect of coenzyme Q10 on stress-induced cardiac dysfunction in paediatric patients with mitral valve prolapse: a study by stress echocardiography. AB - Stress echocardiography (stress echo) by means of isometric handgrip has been proven to be useful for detection of latent cardiac dysfunction in patients with mitral valve prolapse (MVP). In MVP with symptoms (symptomatic MVP), handgrip (HG) stress usually induced an abnormal response, i.e. a decrease in the ejection fraction (EF) in accordance with other echo indices. If an effective treatment with coenzyme Q10 (CoQ) is performed, the response becomes normal (increase in EF) and symptoms disappear. Four hundred consecutive symptomatic MVP were divided into 6 groups according to the dose of CoQ, i.e., 0.6-0.9, 1.0-1.4, 1.5-1.9, 2.0 2.4, 2.5-2.9 and 3.0-3.4 mg/kg/day and followed up with repeated HG. There was a strong relationship between the dose and the time needed for normalization. In the 3.0-to-3.4 mg group, the majority of patients acquired a normal response within 1 week. When a single blind test between CoQ (N = 8) and ATP (adenosine triphosphate, N = 8) groups was conducted, the number of patients normalized within 8 weeks was 7 in the former and 0 in the latter. After reduction of the dose, 41 patients had relapses (re-abnormalizations) within 15 weeks (mean = 6.6). Continuous normalization for 4 months or longer after termination of CoQ occurred 7 to 43 months (mean = 18.5) after onset of symptoms, probably reflecting the self-limited natural course. Some patients (5.8% of patients followed up) showed polycyclic long courses like those of congestive cardiomyopathy and needed long-term CoQ treatment. CoQ was definitely effective for symptomatic MVP and improved stress-induced cardiac dysfunction if the appropriate dose was given. No side-effect was seen. PMID- 3836876 TI - Long-term coenzyme Q10 therapy: a major advance in the management of resistant myocardial failure. AB - Coenzyme Q10 (CoQ10) treatment, orally administered as 100 mg daily dose, was initiated in a series of patients with advanced heart failure in an open, controlled design. They were all showing an insufficient response to classical therapy with diuretics and digitalis. Twelve patients with various causes of heart failure, classified clinically by echocardiography (ECHO), (12/12), and heart catheterization with endomyocardial biopsy, (10/12), were followed prospectively for a mean period of seven months. Serial assessments: Clinical examination (with questionnaire), ECG, chest X-ray, ECHO, systolic time intervals (STI) and blood levels of CoQ10 were performed. With a mean latency period of 30 days, eight out of 12 patients (67%) showed definite clinical improvement. Subjectively, the patients felt less tired, their general activity tolerance increased and dyspnoea at rest disappeared. There were obvious signs of decreased right-sided stasis (hepatic congestion). The heart rate fell significantly, and the heart volume (chest X-ray) decreased in the eight responders (although n.s.). A significant reduction in the left atrial size (ECHO) was registered, suggesting a reduced preload of the left ventricle, Furthermore, a significant decline in the PEP/LVET ratio (STI) was indicative of an improved myocardial performance. Preliminary CoQ10 withdrawal results showed severe clinical relapse with subsequent improvement on CoQ10 reinstatement, supporting the interpretation that treatment of these patients corrected a myocardial deficiency of CoQ10 and increased contractility. Hence CoQ10 appears to be an effective therapeutic agent in advanced cases of heart failure. This is an attractive circumvention of the traditional principles of therapy: supporting the myocardium directly by ameliorating a supposed underlying mitochondrial dysfunction (exhausted bioenergetics). PMID- 3836877 TI - [Long-term prognosis following ventricular fibrillation in acute myocardial infarction]. PMID- 3836878 TI - [Hemodynamic effects of vasodilators in aged patients with heart failure]. PMID- 3836880 TI - [Two cases of karyotype 46 XY "female" 17-alpha-hydroxylase deficiency]. PMID- 3836879 TI - [Follow-up survey of 60 patients with mitral valve replacement using a flexible stent porcine aortic valve xenograft]. PMID- 3836881 TI - [Clinical significance of systolic hypertension--analysis of 2435 cases]. PMID- 3836882 TI - [Significance of comparing the QRS complexes of conducting beats with escaped beats in localizing AV block sites]. PMID- 3836883 TI - [Diagnostic value of delta QCM5 in the treadmill exercise test]. PMID- 3836884 TI - [Hypertrophic cardiomyopathy--a report of 3 cases in one family]. PMID- 3836885 TI - [Echocardiographic study of AV function in primary cardiomyopathy]. PMID- 3836886 TI - [Relation between lipoprotein cholesterol and hypertension and coronary heart disease]. PMID- 3836887 TI - [Experimental study measuring human cardiac stroke volume by admittance plethysmography with constant voltage]. PMID- 3836888 TI - [Effect of acute changes in preload on the Q-Z interval in plethysmography]. PMID- 3836889 TI - [Comparison of the reliability between several methods of measuring the heart by Xray]. PMID- 3836890 TI - [Metabolism of lipids and apoprotein B of plasma lipoprotein subfractions in subjects with normotriglyceridemia and hypertriglyceridemia]. PMID- 3836891 TI - [Serum lipids and LDL receptor activity of lymphocytes in aged groups]. PMID- 3836892 TI - [Effect of selenium deficiency on serum and myocardial free fatty acids and the oxidation of fatty acids by the myocardium]. PMID- 3836893 TI - [Method of defining mechanical injury to the intima of the aorta]. PMID- 3836894 TI - [Estimation of the acute ischemic area in experimental dogs and the effect of reperfusion]. PMID- 3836895 TI - Review of food consumption surveys--1985. Household food consumption by economic groups. PMID- 3836896 TI - Cropping systems and household food security: evidence from three West African countries. AB - The following four articles describe several aspects of the complex yet basic processes of food production and consumption in African settings. Three elements in the picture stand out as subjects of current research and development action: traditional food crops, seasonality and women's activities. It is important that specialists enhance their understanding of those processes and the dynamic interrelations among particular elements, in the interests of improved nutrition and rural development. PMID- 3836897 TI - Decline and revival of traditional food plants in East Africa. PMID- 3836898 TI - Nutritional linkages in a rural development project in Turkey. PMID- 3836899 TI - Seasonal variation and nutrition in developing countries. PMID- 3836900 TI - Family nutrition and women's activities in rural Africa. PMID- 3836901 TI - A timely warning and intervention system for preventing food crises in Indonesia: applying guidelines for nutrition surveillance. PMID- 3836902 TI - The promise in trees. PMID- 3836903 TI - [In vitro activity of norfloxacin alone and in combination]. PMID- 3836904 TI - [Midecamycin activity against aerobic and anaerobic bacteria]. PMID- 3836905 TI - [Pharmacokinetics and therapeutic activity of netilmicin 200 mg in a single dose (daily) in urinary infections]. PMID- 3836906 TI - [Use of aztreonam in the treatment of respiratory infections]. PMID- 3836907 TI - [3 cases of poisoning caused by wine contaminated with lead]. AB - Three cases of lead poisoning of non occupational origin as result of drinking contaminated homemade wine are described. The source of lead most likely was the ceramic inner surface of the container used for wine fermentation and/or the cement used for filling up slots between ceramic tiles. The lead content of wine was found to be 40 mg/l whereas maximum allowed level in Italy is 0.3 mg/l. Treatment with calcium versenate given intravenously solved gastroenteric symptoms. Further investigations were reassessed six months after the acute episode showing both blood and urine parameters still below the normal range for adults occupationally not exposed to lead. Awareness of family physicians in early recognition of these episodes is recommended. Furthermore such hazard should be considered when choice of materials for containers delegated to wine fermentation is made, since home wine making is a widespread practice in our country. PMID- 3836908 TI - [Production technology and use of composite materials in the aeronautics industry, risks and pathology in the manufacturing workers]. AB - The type and applications of composite materials have increased greatly during the last forty years, particularly in the aircraft and aerospace industries. The foreseeable increase of the employment of composite materials in future needs an adequate engagement in finding out health risks involved with technological processes. Composite materials - considered as a close union between a continuous glass, aramid or carbon reinforcing fibre and a epoxy matrix - present several advantages over traditional materials. Structural epoxy adhesives are defined as complex formulated systems. By mixing a large number of ingredients a formulated resin is obtained, which represents the start of the production process for adhesive manufacture. The most important ingredients such as catalysts, accelerators, the groups of epoxy monomers and oligomers, additives most used and their role into the epoxy matrices are illustrated. Of the various technologies existing for the fabrication of aircraft structures the one so called "vacuum bag" is described. The knowledge of the chemical composition of the substances used in the production of composite materials and epoxy adhesives allows to verify the possible existence of hazard for workers health. Among the potentially dangerous chemicals, epoxy monomers and oligomers, catalysts, accelerators are to be considered. The metabolism and the mechanisms of toxicity of epoxides are summarized. However the toxic effects of most epoxides are far from being wholly investigated. In man epoxides ingestion, inhalation or absorption through the skin can lead to several toxic effects: irritation and sensitisation, alterations of liver and nervous function. Finally some epoxides are considered to be carcinogenic in animals and in man; however for many compounds, the results are not yet conclusive. From what it is said above come out the necessity of a careful sanitary control of the workers exposed to these hazards, control that is made difficult by the lack of adequate biological indices for the risks found. PMID- 3836909 TI - Urinary elimination of p-dichlorobenzene (p-DCB) and weighted exposure concentration. AB - The aim of the present work is to determine p-DCB concentration in the urine of exposed workers and to verify a possible correlation with the environmental exposure. The authors studied four subjects exposed to different p-DCB environmental concentrations during a working week. The measurement of the substances was performed by means of a Hewlett-Packard 5880 A gas-chromatograph supplied with a Hewlett-Packard 5970 A Mass Selective Detector. The analysis was performed by a head space method (after determining the urine/air partition coefficient (lambda) by the multiple phase equilibration method). The lambda value (urine/air) of p-DCB is 10.8. The Authors found a significant relationship between the difference of p-DCB urinary concentration at the beginning and end of a daily work delta Cu (microgram/l) and the p-DCB environmental concentration C-I (mg/m3) (r = 0.64) (P less than 0.01); delta Cu = 0,48C-I + 15.61. We found that with an environmental exposure of 44.7 mg/m3 median value (geometrical deviation 1.15) there is an increase of p-DCB concentration in the urine of workers during the working week. For a daily environmental exposure of 450 mg/m3 (ACGIH TLV, 1984), we think that it is possible to propose a Biological Exposure Index (B.E.I.) of 250 micrograms/l as difference between beginning and end of a daily work. PMID- 3836911 TI - [Comparison of various methods of evaluating auditory damage caused by chronic acoustic injury]. AB - The purpose of the present study was to compare the most common hearing damage criteria, based upon pure tone audiometric data. We examined 1086 workers with different intensity and duration of noise exposure. After consecutive selections, 455 subjects, subdivided into four exposure groups, were studied. The 12 considered criteria showed a widespread difference in their sensitivity: the percentage of hearing impaired subjects ranged from 3.3 to 24.2% in the whole population. The most sensitive criteria evaluated the hearing loss at 2 and 4 KHz. The evaluation of the hearing loss at 3 and 6 KHz did not modify the percentage of subjects bearing an handicap. The authors suggest the average hearing loss at 2 and 4 KHz as a criterion to be used for preventing and epidemiological purposes. PMID- 3836910 TI - [Environmental and biological monitoring of subjects occupationally exposed to precious metals (gold lost-wax casting)]. AB - Environmental monitoring during lost wax casting in jewelry handicrafts was performed for gold, silver, zinc and copper by means of personal samplers and ICP AAS techniques were used for determining airborne metals. Personal sampling was prolonged for a working week by continuous monitoring during 8 hours shifts, replacing the membrane filter every 2 hours, in 6 workers; in the same workers urine samples were collected during the week and levels of Au, Ag, Zn and Cu were measured by ETA-AAS. During casting process Ag air concentrations ranged 0.27-0.6 mg/m3 while mean levels of Au, Cu, and Zn were 0.028 0.030 and 0.056 mg/m3 respectively. Urinary excretion of Ag (I) determined by solvent extraction and separation by liquid anion exchanger proved very high, after 24-36 h from the casting processes. PMID- 3836912 TI - [Epidemiology of ischemic cardiopathy in a large iron foundry]. AB - This work examines the coronary disease distribution in a large iron-foundry (7000 workers) with different ways of work and productive technologies, taking into consideration the high incidence and the multiple etiology of risk factors of cardiovascular diseases in the general population. In particular we studied the frequency of coronary disease and its consequence on the workers as far as retirement, death and job modification are concerned. PMID- 3836913 TI - [Losses caused by absenteeism due to accidents in a metalworking plant]. AB - The Index of work accidents, defined as the product of frequency rate by severity rate, is calculated so as to estimate statistically the damage caused to a mechanical plant in six years time. The damage caused by work accidents is maximum for INAIL insurance reported accidents, regarding contusions to upper limbs, caused by hits, in the production dept. "mechanics", at the end of the a.m. and p.m. periods of work, in the first two days of the week, in the warmer and colder months of the year; such damage decreases in the course of the six years examined as a consequence of hardly quantifiables changes e.g. in productivity and prevention measures. Finally, suggestions are given to further reduce the accident risk in the firm examined. PMID- 3836914 TI - [Demanding work, today]. AB - Wearing work is an old problem of occupational medicine which seems to be resolved by technological progress and progressive disappearance of physical fatigue. On the contrary in these new working conditions new physical and psychical possibilities of wearing work take place and they are less conspicuous but not less important than old conditions. Some examples of such conditions are provided and some possible solutions are proposed. PMID- 3836915 TI - Serum lipids and lipoproteins in relation to smoking among the apparently healthy workers: a preliminary survey. The Pavia Study. AB - This pilot study is concerned mainly with the interrelationships between serum lipids and lipoproteins, and personal variables like age, body mass index (BMI) and smoking habit. The analysis was limited to the male workers employed in the Lombardia region. The results of the study confirm the findings of the other investigators on the interaction between smoking and lipid metabolism. The effect of smoking on the cholesterol level appeared to have been the most pronounced and the clear strong relationship with the exposure was established. Also triglycerides concentration was related to the smoking exposure. The HDL lipoproteins were lower and LDL-VLDL higher in smokers than in nonsmokers, however, the association with the smoking exposure was insignificant. The findings showed that HDL-cholesterol level was inversely dependent on the plasma triglycerides both in nonsmokers and smokers. The paper discusses the implications of the research carried out on the interpretation of the HDL cholesterol values as a eventual potential risk factor for the coronary heart disease. PMID- 3836916 TI - [Respiratory function in chemical workers]. AB - The authors have evaluated the trend of the forced expiratory flows at low lung volumes and of the diffusing capacity for CO in a group of chemical workers of a dye factory, exposed to mineral dusts, organic pigments and solvents. Prevalences of chronic bronchitis and dyspnea, as evaluated by CNR questionnaire, were 15 and 32%. FEF25-75, MEF50 and MEF75 showed statistically significant differences with reference values. The reduction of KCO% was almost completely accounted for by smoking habit. During exercise, DLCOSS2 did not reach the expected values. 71% of the subjects with a diagnosis of COLD had worked more than 15 years in the dye factory. These results suggest a negative effect of the working environment, together with cigarette smoking, on lung function of subjects with a medium-long term exposure. PMID- 3836917 TI - Urine/air partition coefficients for some industrially important substances. AB - The urine/air and blood/urine partition coefficients (lambda) of 43 commonly employed organic solvents (Aliphatic, Cyclic, Aromatic and Halogenated Hydrocarbons, Ketones, Alcohols and Esters) are reported. The analyses were performed by the multiple equilibration method (constant pressure method) using a Hewlett-Packard 5880 gas chromatograph. The lambda values proposed can be employed in the field of biological monitoring of subjects occupationally exposed to solvents vapors. PMID- 3836918 TI - [Ionizing radiation and video computer terminals]. AB - VDTs are more frequently being used and, therefore have given rise to the problem of security among operators exposed to possible X-ray emissions. The authors report the results of a dosimetric investigation, carried out through TLD CaF2:Dy on X-ray exposure levels close to video display terminals of a data processing center. After testing the exposure percentage values and the measurements adjusted to one-year basis, the authors report that the value are generally similar to those existing in the environment even though significant values have been found in a few cases. PMID- 3836919 TI - [Hepatitis A and B virus infections in refuse workers in Asti]. AB - The authors have examined Hepatitis A and B virus infection risk in 93 dustmen and sewer workers. It has non been found a risk correlated with employment, though for some of them, with peculiar functions, the HBV and/or HAV serological markers prevalence rates were higher than in the remaining of the studied population. PMID- 3836920 TI - [Respiratory pathology caused by exposure to solvents in the shoe industry: description of 3 clinical cases]. AB - Clinical and functional respiratory features of three shoe factory workers exposed to organic solvents from glue or other adhesives are described. All subjects complained of chronic cough, dyspnea and wheezing when exposed to non specific bronchial stimuli, and showed a non specific bronchial hyperresponsiveness to methacholine; symptoms and bronchial hyperreactivity persisted some years after the cessation of work. In two cases the onset of the symptoms was ascribed to the occupational exposure to glue activators (containing usually a considerable percentage of chlorinated hydrocarbons as dichloromethane or methilenedichloride). We supposed that occupational exposure to large amounts of glue solvents in shoe factory might cause a chronic airway impairment with non specific bronchial hyperresponsiveness. PMID- 3836921 TI - [Investigation of the exposure to solvents in leather goods workers in the Florence area]. AB - A survey was carried out in 15 leather goods manufactures in the Florence's Province in order to indicate the parameters for the evaluation of the exposure due to solvents by personal samplings. N-esano concentration was correlated to the following parameters: ventilation, volume of the premises, gluing surface of the articles, gluing process and relative methods. Aim of the survey was to point out the more useful parameters, to assess the glue users exposure, in order to effect improvements in the working process and premises of the workshops in the whole area. As a final result of the survey the parameter with the best correlation to n-hexane concentration was the one indicated as "gluing method". Some prevention advises are indicated. PMID- 3836922 TI - [Quantification of pentachlorophenol in urine by gas chromatography/mass spectrometry with a fragmentographic technic]. AB - A method involving GC/MS-Selective Ion Monitoring is presented for the quantitation of low levels of PCF in the urine of exposed workers. Procedures for removing coestractans and for derivatizing PCF are not required. The method is specific. The sensibility and reproducibility are satisfactory. PMID- 3836923 TI - [Delivery following previous cesarean section. Presentation of 200 cases]. PMID- 3836924 TI - [Ovulation in the puerperium after premature delivery]. PMID- 3836925 TI - [The most common etiologic factors in threatened premature labor]. PMID- 3836926 TI - Stromal cells of the mammary gland in various functional states. PMID- 3836927 TI - Ultrastructure of the mammary gland in conditions of secretion deposition in the secretory portions. PMID- 3836928 TI - The structure and topography of the pterygopalatine ganglion in goose. PMID- 3836929 TI - Topography of rami communicantes of the pelvic part of the sympathetic trunk in human fetuses. PMID- 3836930 TI - Stereological investigation on mitochondria in dark and light cells of mouse blastocyst. PMID- 3836931 TI - Freezing and low temperature storage of cell lines with chromosomal aberrations and metabolic blocks in the tissue repository of the Child Health Center in Warsaw. PMID- 3836932 TI - Morphological evaluation of axonal endings regeneration in neuromuscular junctions under conditions of limited mobility. PMID- 3836933 TI - Vasodilators in acute myocardial infarction. PMID- 3836934 TI - Haemodynamic effects of intravenous isosorbide dinitrate in patients of cardiac failure following acute myocardial infarction. PMID- 3836936 TI - Left ventricular global and regional functions in patients with ischaemic heart disease: comparison of resting radionuclide ventriculography with contrast ventriculography and coronary arteriography. PMID- 3836935 TI - Detection and quantification of mitral regurgitation by pulsed Doppler echocardiography. PMID- 3836938 TI - Critical evaluation of the coronary risk factors profile in patients with myocardial infarction. PMID- 3836937 TI - Myocardial infarction at autopsy: morphologic observations on 272 cases. PMID- 3836939 TI - Polymorphonuclear leukocytic sialic acid in essential hypertension. PMID- 3836940 TI - Incidence of rheumatic activity in left auricular appendage removed during surgery--a ten-year study. PMID- 3836941 TI - Serum immunoglobulins and C3 in rheumatic heart disease. PMID- 3836942 TI - Hypertension among the industrial workers and professional classes in Ludhiana, Punjab. PMID- 3836943 TI - Closed mitral valvotomy: a second look. PMID- 3836944 TI - Study of genetic variants of serum hyperlipidaemias in Jammu. PMID- 3836945 TI - A case of acute hypereosinophilic syndrome with post-mortem findings. PMID- 3836946 TI - Single coronary artery as an isolated anomaly. PMID- 3836947 TI - Free floating ball thrombus in left atrium: identification by two-dimensional echocardiography. PMID- 3836948 TI - "Stem-pipe" arteries--a cause of pseudohypertension. PMID- 3836949 TI - Evaluation of routine scanning in patients with breast cancer. PMID- 3836950 TI - The biological behaviour of carcinoma of the thyroid in the elderly. PMID- 3836951 TI - Medulloblastoma--a histomorphological profile. PMID- 3836952 TI - Radical radiotherapy and salvage surgery for T3N0M0 glottic cancer.... Is it feasible in the Indian population? PMID- 3836953 TI - Management of recurrent soft tissue sarcomas by conservative surgery and adjuvant intraoperative interstitial brachytherapy. PMID- 3836954 TI - Ultrastructure of chemically induced mouse skin tumours. PMID- 3836955 TI - Frozen section diagnosis in thyroid lesions. PMID- 3836956 TI - Cavernous haemangioma of testis with acute testicular infarction--a case report. PMID- 3836957 TI - A study of parthenium dermatitis. PMID- 3836958 TI - Eosinophilic granuloma of skin with Hand-Schuller-Christian disease (a case report). PMID- 3836959 TI - Sutton's aphthae and Behcet's syndrome. PMID- 3836960 TI - Study of dermatoglyphics in leprosy. PMID- 3836961 TI - The enigma of pulseless disease. PMID- 3836962 TI - The diagnostic value of glucose in pleural/peritoneal fluid in tuberculosis. PMID- 3836963 TI - Cardiac arrhythmias in infants and children. PMID- 3836964 TI - Fulminant hepatic failure in childhood. PMID- 3836965 TI - Short course chemotherapy for tuberculosis in children. PMID- 3836966 TI - Thyroid function in fullterm and preterm newborns. PMID- 3836967 TI - Birth asphyxia-predictors of outcome and management. PMID- 3836968 TI - Intrauterine infections. PMID- 3836969 TI - Electroencephalographic correlation of clinical, radioisotopic brain scan, CT scan and postmortem diagnosis. PMID- 3836970 TI - The current status of phenobarbitone use in childhood. PMID- 3836971 TI - Interpreting an electrocardiogram: Part I. PMID- 3836972 TI - Surgical removal of tracheo-bronchial foreign bodies. PMID- 3836973 TI - Socio-biological parameters in relation to permanent sterilisation of parents. PMID- 3836974 TI - Shigellosis in children--prevalence of subgroups and antibiotic resistance. PMID- 3836975 TI - A multiple malformations syndrome with cleft lip and palate and ankyloblepharon filiforme adnatum. PMID- 3836976 TI - Anesthesia in cancrum oris. PMID- 3836977 TI - Budd-Chiari syndrome. PMID- 3836978 TI - Use of diazepam in status epilepticus. PMID- 3836979 TI - Inadequacy of breast milk--a myth or reality? PMID- 3836980 TI - Breast feeding ability of undernourished mothers and physical development of their infants during 0-1 year. PMID- 3836981 TI - Typhoid fever in young children. PMID- 3836982 TI - Accidents in infancy and childhood. PMID- 3836983 TI - Blood-brain barrier in non-infective convulsive disorders. PMID- 3836984 TI - Survey of mentally retarded persons. PMID- 3836985 TI - Parental refusal of medical care. PMID- 3836986 TI - Computed tomography (CT) scan in mentally retarded children. PMID- 3836987 TI - Dental caries. PMID- 3836988 TI - Leukocyte response in malaria. PMID- 3836989 TI - Shifts in selective visual attention: towards the underlying neural circuitry. AB - Psychophysical and physiological evidence indicates that the visual system of primates and humans has evolved a specialized processing focus moving across the visual scene. This study addresses the question of how simple networks of neuron like elements can account for a variety of phenomena associated with this shift of selective visual attention. Specifically, we propose the following: (1) A number of elementary features, such as color, orientation, direction of movement, disparity etc. are represented in parallel in different topographical maps, called the early representation. (2) There exists a selective mapping from the early topographic representation into a more central non-topographic representation, such that at any instant the central representation contains the properties of only a single location in the visual scene, the selected location. We suggest that this mapping is the principal expression of early selective visual attention. One function of selective attention is to fuse information from different maps into one coherent whole. (3) Certain selection rules determine which locations will be mapped into the central representation. The major rule, using the conspicuity of locations in the early representation, is implemented using a so-called Winner-Take-All network. Inhibiting the selected location in this network causes an automatic shift towards the next most conspicious location. Additional rules are proximity and similarity preferences. We discuss how these rules can be implemented in neuron-like networks and suggest a possible role for the extensive back-projection from the visual cortex to the LGN. PMID- 3836990 TI - Failure to confirm a correlation between electromyogram and final position. AB - Attempts were made to correlate angular position of the elbow with integrated electromyographic activity of biceps and triceps. Five conditions were studied: isometric co-contraction and immediately after fast flexion, slow flexion, fast extension and slow extension movements. Neither activity of biceps, activity of triceps or the ratio of activities correlated with any of four different angles for these five conditions. PMID- 3836991 TI - Normal-hearing teenagers' performance on time-compressed sentential stimuli. AB - Teenagers with normal hearing, reading, and learning abilities yielded normative data on time-compressed speech, either the Revised CID sentences or 3rd-order sentential approximations. There were 6 Ss, either all boys or all girls, in each of 12 subgroups combining age (median ages: 13, 15, 17 yrs), gender (M or F), SPL of test (45 or 60 db SPL), type of material ( RCIDs or sentential approximations), and percent time compression (0, 40, or 60%). The expected poorer performance was found with sentential approximations, either increased time compression, and with decreased level. This study provides normative data for teenagers' performance on tests of time-compressed sentential material. PMID- 3836992 TI - Noise exposure levels from model airplane engines. AB - Previous research indicates that noise levels from unmuffled model airplane engines produce sufficient noise to cause TTS. The present study explored SPLs of smaller engines under 3.25 cc (.19 cu. in.) and the effectiveness of engine mufflers. Results showed that model airplanes can exceed a widely used damage risk criterion (DRC) but that engine mufflers can reduce levels below DRC. Handling model gasoline engines should be added to the list of recreational activities such as snow-mobile and motorcycle riding, shooting, etc. in which the participant's hearing may be in jeopardy. Suggestions are presented to the model engine enthusiast for avoiding damage to hearing. PMID- 3836993 TI - Auditory adaptation: notes on power and parabolic curve fitting across intensity: II. AB - The classic Simultaneous Dichotic Loudness Balance (SDLB) procedure for the study of auditory adaptation was used by Weiler and Hood (1977) in a successful test of a model for predicting adaptation in db at intensities above the initial baseline values, using a linear approximation across levels. When Balzer et al (Brit. J. Audiol., 1984, 18, 49-50) fitted curves for simple baseline adaptation data from four studies based on SDLB data, they reported good fits for the Gompertz technique and for a parabolic formula, but did not test the relative goodness of fit for the linear formula, nor for power approximations as Stevens (1975) might have proposed. The present study makes use of the data used by Balzer et al but examines a linear fit as well as two approximations to Stevens' power law. The present finding that the linear approximation is the least efficient examined would suggest that the Weiler and Hood model should be re-examined to determine the degree to which the model can be improved by use of a curvilinear baseline fit. In addition, it might be noted that the curvilinear formulae, of necessity, involve two or more stages. It is the the current effort of this laboratory to determine whether this reflects a multifactor basis to the classic SDLB adaptation, as well as results from other adaptation techniques. PMID- 3836994 TI - The effects of multitalker and masker noise on fundamental frequency variability during spontaneous speech for children and adults. AB - Young adults (N:10) and children aged 5-10 yrs (14 M, 14 F) spoke spontaneously in quiet and in the presence of masking at 90 db SPL in binaural earphones, either white noise or multitalker noise. Fundamental frequency (fo) variability data (coefficients of variation) for the stressed and nonstressed words were submitted to ANOVA. Fo variability observed during the production of stressed words was significantly more variable than nonstressed words. Also, multitalker noise affected performance variability while white noise did not. Evidence supporting the operation of a mixed control strategy during speech production was discussed. PMID- 3836995 TI - Musical empathy (Einfuhling). AB - In this paper an "alpha-effect" is defined as a plethysmograph amplitude increase to the hearing of music concurrently with strong affinity for music, pleasurable feeling and reported empathy. Based on this definition a hypothetical model of empathy to music is formulated and the psychophysiological alpha-effect mechanism is related to the processes of empathy and cognitive attribution. In order to understand the psychophysiological mechanism of the alpha-effect, a network is proposed made up of several physiological processes with feedback circuits and feedback circuits at both the sensory and physiological level, and at the cognitive and psychological level. It was aimed also to give a theoretical account of the efficacy of music and to explicate the underlying psychophysiological mechanisms of that efficacy. The model may also help clinical psychologists who want to use music as a therapeutic tool in arranging optimal programs suited to the individual needs, experience, and background of a patient. PMID- 3836996 TI - Frequency discrimination in bobwhite quail (Colinus virginianus). AB - Bobwhite quail (Colinus virginianus) (N:9, aged 24 mo) were trained using a positive reinforcement paradigm to respond to an assigned "standard" frequency of either 1.0 or 3.5 kc/s by pressing a response key. Each S was trained in 2 phases to respond to its assigned frequency rather than to alternately presented tones of a different frequency. In every test each S discriminated its assigned frequency at greater than chance levels. Discrimination ability was poorest when delta F was at the minimum tested (0.25 kc/s). Birds whose standard frequency was 1.0 kc/s were better at the task than those trained to a 3.5-kc/s standard, especially when finer discriminations were required (Phase II). This superiority at 1.0 kc/s confirmed what was seen previously (Barton et al, J. Aud. Res., 1984, 24, 87-97) in the Bobwhite's audibility curve; it was hypothesized that the correspondence may have to do with the need for adult birds to recognize frequency variations near 1.0 kc/s that are uniquely made by immediate conspecifics rather than other members of the species. As such it may well represent a "fine tuning" of the bird's acoustic abilities. PMID- 3836997 TI - Marine turtle middle-ear anatomy. AB - The middle-ear structures from 5 Atlantic Loggerhead (Caretta caretta) and 1 Atlantic Ridley (Lepidochelys kempi) marine turtles from dead specimens found stranded in the lower Chesapeake Bay were dissected and examined superficially and by light microscopy. The marine turtle middle ear is poorly adapted as an aerial receptor in mammalian and reptilian terms. However, it appears well designed as a peripheral component of a bone conduction system. The thick tympanum, while disadvantageous as an aerial receptor, likely enhances low frequency bone conduction hearing. The columella directly couples the cochlea and saccule so that its movement would stimulate each end organ. Turtle hearing is probably an integration of both outputs. PMID- 3836998 TI - Bhopal tragedy--a year later. PMID- 3836999 TI - Pattern of occurrence of hepatitis-B virus markers in body fluids among follow-up cases of liver diseases: a correlative study. PMID- 3837000 TI - Study of R wave, S wave and R/S ratio in precordial electrocardiographic leads recorded one intercostal space lower in cases with poor R wave progression. PMID- 3837001 TI - Spot urine test for quantitative estimation of proteinuria. PMID- 3837002 TI - Plasma fibrinogen, fibrinolytic activity and serum fibrinogen/fibrin degradation products in ischaemic heart disease. PMID- 3837003 TI - Significance of carcinoembryonic antigen level in patients with ascites. PMID- 3837004 TI - Fatal pulmonary haemorrhage in systemic lupus erythematosus. PMID- 3837005 TI - Acute renal failure--an unusual presentation of non-Hodgkin's lymphoma (an autopsy report). PMID- 3837006 TI - Coronary artery spasm. PMID- 3837007 TI - Retreatment of pulmonary tuberculosis. PMID- 3837008 TI - Neem leaf poisoning. PMID- 3837009 TI - Trihexyphenidyl dependence. PMID- 3837010 TI - Aluminium phosphide poisoning. PMID- 3837011 TI - Stress polycythemia. PMID- 3837012 TI - Unusual neuropsychiatric manifestation of enteric fever. PMID- 3837013 TI - Visceral leishmaniasis: a typical clinical presentation. PMID- 3837014 TI - Imbalanced maternal mineral nutrition and Indian childhood cirrhosis. PMID- 3837015 TI - Short term chemotherapy of pulmonary tuberculosis. PMID- 3837016 TI - Brain 85. XII International Symposium on Cerebral Blood Flow and Metabolism. Lund/Ronneby, Sweden. June 16-20, 1985. Abstracts. PMID- 3837017 TI - Cell solute composition and potassium effects in slices of the rectal gland of the dogfish shark (Squalus acanthias). AB - Cell solute composition and apparent intracellular ionic concentrations (subscript i) were determined in rectal gland slices of the dogfish shark (Squalus acanthias). On aerobic incubation in elasmobranch Ringer's at 15 degrees C, the steady state values were: Ki+, 151 mM, close to its apparent electrochemical equilibrium; Cai2+, 1.7 mM; Mgi2+, 7.5 mM; Cl1-, 97 mM (maintained against its electrochemical potential gradient); the sum (Nai+ + Ki+) was about 66 meq/kg cell water lower than in the medium. Of free amino acids, only the effectively impermeable anionic taurine (32 mM) and glutamate (3.7 mM) significantly contribute to the Donnan system. Variations of the Ringer's K+ concentrations, or the presence of 0.5 mM ouabain, demonstrated the permeability of the cell membrane to na+, K+, and Cl-. Cell volume changes: 0.5 mM ouabain produced a gradual swelling and ionic changes consistent with an inhibition of the sodium pump. In high-K+ media the cells swelled massively and the membrane depolarized. A linear relationship between cell volume changes and the Nernst potential for K+ was found. These properties are consistent with a pump-and-leak system for cell volume maintenance. The K+ -induced cell swelling was found to be reversible on transfer of the tissue to regular Ringer's. The extrusion of cell water was associated with an influx of Na+ into, and an efflux of K+ from, the cells (both fluxes down-hill), as well as extrusion of Cl- against its concentration gradient.2+ PMID- 3837018 TI - Circadian oscillators, cell cycles, and singularities: light perturbations of the free-running rhythm of cell division in Euglena. AB - The free-running circadian rhythm of cell division in the algal flagellate, Euglena gracilis (Z) was perturbed by 3-h light signals of varying intensities imposed at different circadian times (CT). Light pulses within the range of 700 to 7,500 lux were found to yield the same 'strong' (Type 0) phase response curve (PRC) comprising both advance and delay phase shifts as great as 15 h. Dark signals generated a PRC of reduced amplitude with very little, if any, phase advance being observed. Light perturbations of lower intensity, however, elicited quite different responses if applied at a quite specific circadian time: A 40- to 400-lux pulse given at approximately CT 0 (late subjective night) induced total arrhythmicity, and the culture reverted to asynchronous, exponential growth. Different degrees of arrhythmicity were induced by the same low-intensity perturbations (I*) given slightly before or after this sensitive phase point (T*), but if imposed at other circadian times, they generated normal type 0 phase resetting. The demonstration of the existence of this critical pulse (T*, I*) provides further evidence that the cell division cycle of Euglena (and presumably other microorganisms) is regulated by a circadian oscillator and, in particular, by one having limit cycle dynamics. PMID- 3837019 TI - Catecholaminotropic effects of catecholamines in a teleost fish, Anguilla rostrata. AB - Injections of physiological and supraphysiological doses of epinephrine (E) into cardiac-cannulated eels cause a dose-related increase of plasma dopamine (DA) and norepinephrine (NE) within 3 min. Likewise, both exogenous DA and NE increase the plasma titers of the respective other two catecholamines (CAs). The baseline titers of NE and E are closely correlated. Lack of a correlation of the baseline titers of NE and E with that of DA appears to be due to a faster disappearance rate of DA from the circulation. E is strongly hyperglycemic, and the weaker glycemic action of NE may be mediated via E release. The effects of E seem to depend on a spurt-like increase rather than its titer per se. The ability of the eel to cope with very fast, excessive increases of plasma CAs raises the question of the underlying mechanisms. PMID- 3837020 TI - Maintenance of blood volume in snakes: transcapillary shifts of extravascular fluids during acute hemorrhage. AB - Tracer dilution analysis (D2O, 51Cr, and NaS14CN) was used to investigate the steady-state compartmentation of body fluids and the extent of fluid transfer from extravascular to vascular spaces during hemorrhage-induced hypovolemia in two species of snakes, Elaphe obsoleta and Crotalus viridis. Fluid spaces of the two species are not significantly different (means, blood volume 6.1, 5.4; extracellular fluid 42.2, 41.9; total body water 77.2, 77.2% body mass, respectively), but values for extracellular fluid exceed those reported for other reptiles. Both species of snake withstand graded hemorrhage where 4% of the initial blood volume is withdrawn every 10 min until the cumulative deficit is 32%. Some snakes are able to maintain their initial blood volume throughout hemorrhage, while others restore 90% of deficits within 2 h after hemorrhage ceases. Typically, 50-60% of the hemorrhaged deficit is transferred from the interstitium to the circulation throughout hemorrhage (Fig. 2). The source of fluid entering the vascular space is entirely extracellular during hemorrhage, the blood within 2 h after hemorrhage ceases. Snakes are able to maintain arterial pressure during these experiments (Fig. 3). The ability of snakes to maintain hemodynamic stability despite substantial losses of blood can be explained in terms of a large interstitial fluid volume that may shift rapidly to the vascular space. Shifts in the opposite direction also occur in response to hemodynamic factors, implying a low resistance to fluid movement across the capillary wall. PMID- 3837021 TI - Autonomic adjustments during avoidance and orienting responses induced by electrical stimulation of the central nervous system in toads (Bufo paracnemis). AB - Electrical stimulation of the central nervous system of conscious toads with permanently implanted electrodes in regions related to orienting and avoidance responses induces cardiovascular (hypertension and tachycardia) and respiratory (increased intrapulmonary pressure) changes together with the somato-motor effects typical of these responses. Sympathetic activation occurs and the main peripheral mediator involved may be adrenergic, since the cardiovascular effects are almost completely blocket by systemic pretreatment with phentolamine and DCI. The cardiovascular changes obtained by central stimulation are qualitatively similar to those recorded for toads whose orienting and avoidance behaviors are obtained by the presentation of visual stimuli (presentation of a prey and of a black card moved over the experimental box). Variations in heart rhythm may occur in both cases in the absence of visible somatic manifestations or of other neurovegetative changes, thus showing the importance of this parameter as an index of sensory reception of biologically significant stimuli. The results are compared to those obtained under similar conditions in other non-mammalian vertebrates. PMID- 3837022 TI - Active chloride transport in rabbit thick ascending limb of Henle's loop and elasmobranch rectal gland: chloride fluxes in isolated plasma membranes. AB - To investigate directly whether a sodium-potassium-chloride cotransport system is operating in the mammalian thick ascending limb of Henle's loop (TALH) and in the elasmobranch rectal gland, plasma membrane vesicles were prepared from TALH cells isolated from rabbit kidney outer medulla and from rectal glands of Squalus acanthias, and chloride uptake was measured by a rapid filtration technique. Chloride uptake into TALH vesicles in the presence of a 25 mM Na2SO4, 25 mM K2SO4 gradient reached 70% of equilibrium at 2.5 min. In the presence of both sodium and potassium, the 15 s chloride uptake was inhibited 35% by 1 mM bumetanide. When either sodium or potassium was removed from the incubation medium, chloride uptake decreased to the level observed in the presence of 1 mM bumetanide, 0.5 mM SITS had no effect on chloride uptake by the plasma membrane vesicles. This sodium and potassium dependent, bumetanide sensitive chloride uptake was also observed under tracer exchange conditions. Chloride uptake into rectal gland plasma membrane vesicles in the presence of a 50 mM Na2SO4, 50 mM K2SO4 gradient reached 80% of equilibrium at 2.5 min. 1 mM bumetanide inhibited the 15 s uptake of chloride by 34% and removal of either sodium or potassium from the incubation medium reduced chloride uptake to the level observed in the presence of bumetanide under both gradient and tracer exchange conditions. These studies provide additional support for the hypothesis that a sodium-potassium-chloride cotransport system is operating in these epithelia. PMID- 3837023 TI - Heat loss regulation: role of appendages and torso in the deer mouse and the white rabbit. AB - Thermal conductance was subdivided into the component conductances of the appendages and torso using a heat transfer analysis for the deer mouse, Peromyscus maniculatus, and the white rabbit, Oryctolagus cuniculus. Our analysis was based on laboratory measurements of skin temperature and respiratory gas exchange made between air temperatures of 8 and 34 degrees C for the deer mouse, and from published data for the white rabbit. Two series conductances to heat transfer for each appendage and torso were evaluated: internal (hin), for blood flow and tissue conduction to the skin surface, and external (hex), for heat loss from the skin surface to the environment. These two series conductances were represented in a single, total conductance (htot). The limit to htot was set by hex and was reached by the torso htot of both animals. The increase in torso htot observed with air temperature for the mouse suggests that a pilomotor change in fur depth occurred. A control of htot below the limit set by hex was achieved by the hin of each appendage. Elevation of mouse thermal conductance (C) resulted from increases in feet, tail, and torso htot. In contrast, the rabbit showed no change in torso htot between 5 and 30 degrees C and ear htot exclusively increased C over these air temperatures. We suggest that the hyperthermia reported for the rabbit at 35 degrees C resulted from C reaching the physical limit set by torso and near hex. Thus the ear alone adjusted rabbit C, whereas the feet, tail, and the torso contributed to the adjustment of mouse C. PMID- 3837024 TI - Evaporative water loss: thermoregulatory requirements and measurements in the deer mouse and white rabbit. AB - Using a physical model of the capacity for non-evaporative heat loss and measurements of metabolic heat production, I evaluated the evaporative requirements for thermoregulation in the deer mouse, Peromyscus maniculatus, and the white rabbit, Oryctolagus cuniculus. The physical limit to non-evaporative heat loss was calculated from the heat transfer properties of the two animals and expressed as a maximum thermal conductance (Cmax). Two physiologically-based thermal conductances were derived from evaporative water loss, respiratory gas exchange and core temperature measurements made between 8 and 34 degrees C on the deer mouse, and taken from published data for the white rabbit. The thermal conductance for non-evaporative heat loss (C) was calculated from net heat production, whereas Cm represented the thermal conductance required to dissipate metabolic heat production. Evaporation is required when metabolic heat production exceeds the capacity for non-evaporative heat loss (as shown by Cm greater than Cmax). However, evaporation increased in both animals although additional capacity to lose heat remained (i.e., C less than Cmax). Evaporation increased with C above 30 degrees C for the mouse and at each 5 degrees C measurement interval from 15 to 30 degrees C for the rabbit. Thus, evaporation was greater than that required for thermoregulation for both animals as determined from a physical model of heat loss because both evaporation and C increased together to regulate heat loss. PMID- 3837025 TI - Embryonic nutrition, growth and energetics in Zoarces viviparus L. as indication of a maternal-fetal trophic relationship. AB - The embryos of Zoarces viviparus (L.) show linear growth during their intraovarian development. In early gestation before hatching, the embryos take up very small amounts of low molecular tracer compounds such as glucose, glycine or taurine. Later in gestation (two months after hatching), the embryos accumulate substantial amounts of the tracer compounds. The uptake rates of the tracer compounds in vitro are correlated with ambient concentrations of unlabelled compounds within the natural concentration range of the ovarian fluid. The highest uptake rates are found for glucose and the lowest for taurine. Release of 14CO2 and dissolved organic carbon (DO14C) from assimilated tracers in the embryos is low. Oxygen uptake and body weight of the embryos appear to be linearly correlated, and the average oxygen uptake is 4.20 (SD 0.73) mumol O2 g-1 h-1 WW at 11 degrees C. The contribution of glucose respiration to total aerobic respiration is 13.9%. A growth to respiration ratio of 0.91 indicates a relatively high efficiency for converting food to growth. PMID- 3837026 TI - Partial purification and kinetic characterization of the microsomal phospholipase A2 from thermally acclimated rainbow trout (Salmo gairdneri). AB - Phospholipase A2 (PLA2) was extracted from liver microsomal membranes of both 5 and 20 degrees C-acclimated rainbow trout (Salmo gairdneri), using the non-ionic detergent, Triton X-100. Further purification was achieved by precipitation with 35-65% ammonium sulfate followed by gel filtration chromatography in the presence of 0.1% Triton X-100 on Sephadex G-200. These procedures resulted in a 30-fold purification and the removal of all traces of phospholipid from the enzyme of both warm- and cold-acclimated trout. Column elution profiles were similar for both acclimation groups, yielding a molecular weight estimate for the trout liver enzyme of 73,000. Comparisons of activity levels and kinetic parameters of PLA2 from warm- and cold-acclimated fish indicated that compensation for temperature at non-saturating substrate concentrations was an attribute of both the particulate (microsomal) enzyme and the lipid-free protein. Cold acclimation resulted in higher activity below Vmax due primarily to decreased apparent Km values. These adaptations to temperature could not be attributed to the interaction of the enzyme with the membrane lipids, but were due to qualitative changes in the enzyme that resulted from acclimation. Other adaptive qualities of PLA2, such as reduced Km in response to acute decreases in temperature in warm acclimated fish, were only apparent in particulate preparations, and thus were a function of the protein-lipid complex. These data suggest that an acclimation induced increase in the activity of PLA2 may result in the activation of a deacylation-reacylation cycle at cold temperatures. PMID- 3837027 TI - Identification of crystalline allantoin in the urine of African Cricetidae (Rodentia) and its role in their water economy. AB - All eleven cricetid species, examined in this investigation, produced an off white crystalline precipitate in their urine when deprived of water, whereas not one murid examined did so. This crystalline compound was identified as allantoin, a common end product of purine catabolism. The quantity found in the solid precipitate alone accounted for 47% of the total nitrogen excreted and was approximately 14 times greater than the predicted quantity of allantoin from purine degradation. It appears that there is a shift in nitrogen excretion from urea to allantoin in the Cricetidae. Water-deprived cricetids had higher urine osmolalities, urea concentrations and lower daily percentage body water turnovers than the murids. This can be explained by the substantial water savings associated with excreting solid allantoin. The discrepancy in the mode of nitrogen excretion between the two families inhabiting the Namib Desert can be attributed to their different evolutionary histories, the Cricetidae being pre adapted for survival in deserts. PMID- 3837029 TI - Parasite regulation of host insect metamorphosis: a new form of regulation in pseudoparasitized larvae of Trichoplusia ni. AB - When eggs of Trichoplusia ni (lepidoptera) are stung by a parasitic wasp, Chelonus sp., the developing host larvae precociously initiate metamorphosis ten days later. Precocious initiation of metamorphosis occurs even in 'pseudoparasitized' stung hosts which contain no living parasites at the time of symptoms of host regulation by the parasite. In feeding, penultimate instar, pseudoparasitized hosts, the corpora allata activity, hemolymph juvenile hormone esterase activity, in vivo rates of juvenile hormone metabolism and changes in hemolymph protein composition all follow the pattern of the normal last instar. This and other evidence suggests the entire developmental pattern of the last larval instar is precociously expressed in penultimate instar, pseudoparasitized hosts. The cause of precocious expression of the developmental program leading to metamorphosis is a significant decrease in the critical size parameter that, in normal larvae, signals attainment of the last instar. The induction, in preultimate instar larvae, of the entire feeding stage developmental program leading to metamorphic commitment, using either biochemical, surgical or parasitic experimental probes, has not been previously reported. The results have important implications for the study of host-parasite endocrine interaction, of normal insect metamorphosis and even of human puberty. PMID- 3837028 TI - Thermal dependence of isotonic contractile properties of skeletal muscle and sprint performance of the lizard Dipsosaurus dorsalis. AB - Contractile properties of the fast-twitch glycolytic (FG) portion of the iliofibularis muscle and sprint running performance were studied at approximately 5 degrees C intervals from 15-44 degrees C in the lizard Dipsosaurus dorsalis. Maximal running velocity (VR) and stride frequency (f) were both greatest when body temperature (Tb) was 40 degrees C, the field-active Tb in Dipsosaurus. At 40 degrees C VR was 4.3 +/- 0.2 m/s and f was 13.5 +/- 0.5 s-1. Between 25 and 40 degrees C, the thermal dependencies of VR and f were approximately constant (Q10's of 1.31 and 1.36 got VR and f, respectively). Below 25 degrees C performance declined more markedly with decreasing temperature. At 20 degrees C strides were qualitatively normal, but VR was only half of the value at 25 degrees C. At 15 degrees C the lizards were substantially incapacitated, and VR was 10% of the value at 20 degrees C. Stride length was approximately 0.33 m and changed very little with Tb from 20-44 degrees C. The time dependent contractile properties of FG muscle were affected more by temperature than was sprint performance. The maximal velocity of shortening at zero load (VO) was 18.7 0/s at 40 degrees C and had a Q10 of 1.7 from 25-40 degrees C. Maximal power output (Wmax) determined from the force-velocity curve was 464 W/kg at 40 degrees C. Below 40 degrees C max varied with temperature with a Q10 of 2-3. The shape of the force-velocity curve changed little with temperature (Wmax/POVO = 0.11). Between 25 and 40 degrees C a relatively temperature-independent process must modulate the effects of temperature on the contractile properties of the muscles that supply the power for burst locomotion. Storage and recovery of elastic energy appears to be a likely candidate for such a process. Below 25 degrees C, however, the contraction time is prolonged to such an extent that the f attainable is limited by the minimum time taken to contract and relax the muscles. PMID- 3837030 TI - Adrenoceptor types in the respiratory vasculature of the salamander gill. AB - Adrenoreceptor types were determined in the branchial respiratory vasculature of the neotenic tiger salamander, Ambystoma tigrinum. Phenoxybenzamine antagonized increases in branchial vascular resistance caused by both epinephrine and norepinephrine. Propranolol antagonized both epinephrine- and norepinephrine induced dilation of this vascular bed. Isoproterenol produced solely vasodilation, phenylephrine had no effect, and methoxamine caused constriction only at a very high dose. It is concluded that alpha-adrenoceptors mediate the catecholamine-induced vasoconstriction, and beta-adrenoceptors the catecholamine induced vasodilation in the respiratory circulation of the gill. PMID- 3837031 TI - Rapid changes in the phospholipid composition of gill membranes during thermal acclimation of the rainbow trout, Salmo gairdneri. AB - The phospholipid composition of gill tissue was determined in rainbow trout (Salmo gairdneri) undergoing thermal acclimation between 5 degrees C and 20 degrees C for a period of up to 28 days. Proportions of phosphatidylethanolamine (PE) and cardiolipin (CL) increased during cold acclimation and decreased during warm acclimation; proportions of phosphatidylcholine (PC) changed in the opposite direction (i.e., decreased during cold acclimation). In contrast, levels of phosphatidylserine, -inositol, and sphingomyelin did not vary significantly. Thermal modulation of headgroup composition occurred rapidly as reflected by changes in the ratio of PC-to-PE, which rose significantly from 2.40 +/- 0.09 to 2.92 +/- 0.09 within 72 h of transfer from 5 to 20 degrees C; adaptation to 5 degrees C was equally rapid. Proportions of PE changed more rapidly than those of PC during cold adaptation, whereas the opposite was true during warm acclimation. Both the time course and the direction of the observed changes in phospholipid composition suggest that such adjustments may contribute to the homeoviscous regulation of membrane properties, particularly during the initial stages of thermal adaptation. PMID- 3837032 TI - Ontogeny of thermoregulation and energy metabolism in pygoscelid penguin chicks. AB - The ontogeny of thermoregulation and energy metabolism of chinstrap (Pygoscelis antarctica) and gentoo (P. papua) penguins was studied on King George Island, South Shetland Island, Antarctica. The major findings of this study are: Chinstrap and gentoo penguin chicks hatched completely poikilothermic, due to their poor heat-production ability at low ambient temperatures. They were able to maintain high body temperatures and metabolic rates only by being brooded by adults. Newly hatched chinstrap penguin chicks had, at a specified ambient temperature, significantly higher metabolic rates than newly hatched gentoos. Moreover, chinstrap chicks maintained a significantly higher body temperature. It is suggested that this is a non-acclimatory metabolic adaptation of chinstrap penguin chicks to the lower mean temperatures of their breeding areas. On the 15th day after hatching, chinstrap chicks were completely, and gentoo chicks almost completely, homeothermic. In spite of their high thermogenic capacity from about day 10, chicks were not at that time capable of controlling heat dissipation, and were still dependent on their parents. In older downy chicks and fledglings, heat loss at low temperatures, expressed as heat conductance (CA), was similar to that found for the adults of other penguin species. Just before moulting the CA of chicks was lower than after moulting. Moulting alone did not cause a clear increase in CA. Towards the end of their stay on land the CA of pre fledged gentoos decreased by 31%. This decrease was not connected with the development of feathers or growth in the chicks' weight. The combination of the low CA and high SMR of chicks gave very low lower critical temperatures, near -15 degrees C. The wide thermoneutral zones of the chicks covered the whole range of air temperature variations in the breeding colonies of both species studied on King George Island. The CA values of homeothermic chinstrap chicks were not lower than those of gentoos, despite the more southern breeding range of the former species. The older chicks of both species are well protected against cold. Any further increase in insulation in chinstrap chicks would be of no adaptative importance. PMID- 3837033 TI - The ionic composition of the plasma and erythrocytes of deep sea fish. AB - This paper reports measurements of the plasma osmolarities, the main inorganic ions and the concentrations of plasma proteins in nine species of deep sea fish from depths of 900-4,000 m. Chloride and magnesium values are high compared to those of shallow water fish. These ions may be contaminants from sea water either contributing to, or resulting from, the animals' moribund condition. They may also contribute to the failure of isolated erythrocytes to show ionic regulation even after being restored to their normal high pressure. PMID- 3837034 TI - Pressure inactivation of tetrameric lactate dehydrogenase homologues of confamilial deep-living fishes. AB - The susceptibility to inactivation by hydrostatic pressure of the tetrameric muscle-type (M4) lactate dehydrogenase homologues (LDH, EC 1.1.1.27; L-lactate: NAD+ oxidoreductase) from six confamilial macrourid fishes was compared at 4 degrees C. These marine teleost fishes occur over depths of 260 to 4815 m. The pressures necessary to half-inactivate the LDH homologues are related to the pressures which the enzymes are exposed to in vivo; higher hydrostatic pressures are required to inactivate the LDH homologues of the deeper-occurring macrourids. The resistance of the LDH homologues to inactivation by pressure is affected by protein concentration. After an hour of incubation at pressure, the percent remaining activity approaches an asymptomatic value. The inactivation of the macrourid LDH homologues by pressure was not fully reversible. Assuming that inactivation by pressure was due to dissociation of the native tetramer to monomers, apparent equilibrium constants (Keq) were calculated. Volume changes (delta V) were calculated over the range of pressures for which plots ln Keq versus pressure were linear. The delta V of dissociation values of the macrourid homologues range from -219 to -439 ml mol-1. Although the hydrostatic pressures required to inactivate the LDH homologues of the macrourid fishes are greater than those which the enzymes are exposed to in vivo, the pressure-stability of these enzymes may reflect the resistance of these enzymes to pressure-enhanced proteolysis in vivo. PMID- 3837035 TI - Plasma free fatty acid levels during cold-induced and noradrenaline-induced nonshivering thermogenesis in the Djungarian hamster. AB - In Djungarian hamsters the cold-induced thermoregulatory heat production was preceded and accompanied by an increase in the plasma level of free fatty acids. In warm-acclimated hamsters this increase was found more pronounced (0.85 to 1.48 mM) than in cold-acclimated hamsters (0.64 to 0.88 mM). Noradrenaline-induced thermogenesis at thermoneutrality provoked a similar increase in the free fatty acid level. Inhibition of nonshivering thermogenesis during cold exposure by propranolol abolished the increase in free fatty acids completely. The surgical removal of brown adipose tissue proportionately reduced the increase in free fatty acids. This indicates that the rise in plasma free fatty acids is functionally related to nonshivering thermogenesis and originates from brown adipose tissue. PMID- 3837036 TI - A comparison of quantitative ultrastructural and contractile characteristics of muscle fibre types of the perch, Perca fluviatilis L. AB - Quantitative ultrastructural and physiological parameters were investigated in three types of muscle fibres of Perca fluviatilis: white fibres from the m. levator operculi anterior, pink (intermediate) fibres of the m. hyohyoideus and deep red fibres of the m. levator operculi anterior. Times to peak tension and half relaxation times of isometric twitches increased in the mentioned order. The extent of contact between the T system and the sarcoplasmic reticulum and the relative volume and surface area of the terminal cisternae showed an inverse relation with the time to peak tension of the twitch. The maximal isometric tetanic force per unit cross section area was similar for all three investigated types. The inverse relation between the time to peak tension of the twitch and the relative length of contact between T system and SR is in agreement with data obtained for fast- and slow twitch muscle fibres of the carp, Cyprinus carpio L. PMID- 3837037 TI - Increased contribution of brown adipose tissue to nonshivering thermogenesis in the Djungarian hamster during cold-adaptation. AB - The effect of cold-adaptation was investigated on the brown adipose tissue of Djungarian hamsters. Animals maintained at 23 degrees C and 16 hours light per day (controls) were exposed to 5 degrees C. The wet weight of the total brown fat is reduced by some 40% within 4 days of cold-exposure, as a result of extensive triacylglycerol depletion of the tissue with no reduction in DNA; the tissue mass remains constant under persistent cold influence. The total amount of tissue mitochondria is doubled by 24 h and increases by a factor of 3 under persistent cold-stimulus, the specific respiratory capacity of the organelles remaining unchanged. The amount of 32 kDa regulatory protein per mg mitochondrial protein quantified from high-affinity GDP-binding, is increased by a factor of 2.7 after 21 days of cold-adaptation; a 9-fold increment is found of the total mitochondrial GDB-binding capacity. Comparison of nonshivering thermogenesis and the maximal thermogenic capacity of brown fat, estimated from the maximal respiration of the isolated mitochondria and the total amount of mitochondria in the tissue, suggests that brown fat may contribute about 20% to the whole-body nonshivering thermogenesis in warm-adapted controls and 45% in cold-adapted hamsters. The estimated increase in thermogenic capacity of the tissue in response to 21 days of cold-adaptation corresponds to the increase in nonshivering thermogenesis, suggesting a central thermoregulatory role of brown fat during cold-adaptation. PMID- 3837038 TI - Chloride transport across the integumentary epithelium of Manduca sexta (Lepidoptera: Sphingidae). AB - Moulting fluid of Manduca sexta contains high concentrations of potassium and bicarbonate (100 mM) and low concentrations of chloride (5 mM). This fluid begins to disappear from the exuvial space approximately 9-10 h before the actual shedding of the integument. During this time, the integument can be isolated in an Ussing cell and electrical properties measured in vitro. In a normal 32 mM KHCO3 saline, potential difference (PD) is around 10 mV, exuvial side positive, and short-circuit current (SCC) is 15-20 microA cm-2. Substitution of chloride slightly reduces both PD and SCC, although resistance does not change significantly. Measurement of chloride transport in the absence of K+ indicates that 100% of the SCC can be accounted for by the net chloride flux (approximately 2 microA cm-2). The Km and Jmax for transepithelial chloride transport are 14 mM and 0.1 microEq cm-2 h-1. Bilateral potassium addition stimulates chloride transport, doubling net chloride flux as potassium concentration increases from 2 to 5 mM. Chloride net flux is not inhibited by the presence of furosemide (1 mM), nor in HCO3- -free saline by thiocyanate (1 or 10 mM) or acetazolamide (0.1 mM), but is inhibited by 100% N2. The pattern of chloride transport in M. sexta is similar to that previously reported for the rectum of locusts. As chloride is normally at low concentrations in the moulting fluid, it is suggested that this transport system acts to maintain low intracellular concentrations which may be necessary for enzymatic functions in the epidermal cells and has little importance in fluid transport. PMID- 3837039 TI - Effects of ambient temperature and altitude on ventilation and gas exchange in deer mice (Peromyscus maniculatus). AB - The effects of different ambient temperatures (Ta) on gas exchange and ventilation in deer mice (Peromyscus maniculatus) were determined after acclimation to low and high altitude (340 and 3,800 m). At both low and high altitude, oxygen consumption (VO2) decreased with increasing Ta at Ta from -10 to 30 degrees C. The VO2 was 15-20% smaller at high altitude than at low altitude at Ta below 30 degrees C. Increased VO2 at Ta below thermoneutrality was supported by increased minute volume (VI) at both low and high altitude. At most Ta, the change in VI was primarily a function of changing respiration frequency (f); relatively little change occurred in tidal volume (VT) or oxygen extraction efficiency (O2EE). At Ta = 0 degree C and below at high altitude, VI was constant due to declining VT and O2EE increased in order to maintain high VO2. At high altitude, VI (BTP) was 30-40% higher at a given Ta than at low altitude, except at Ta below 10 degrees C. The increased VI at high altitude was due primarily to a proportional increase in f, which attained mean values of 450-500 breaths/min at Ta below 0 degree C. The VI (STP) was equivalent at high and low altitude at Ta of 10 degrees C and above. At lower Ta, VI (STPD) was larger at low altitude. At both altitudes, respiratory heat loss was a small fraction (less than 10%) of metabolic heat production, except at high Ta (20-30 degrees C). PMID- 3837040 TI - Effects of water restriction on nitrogen metabolism and urea recycling in the macropodid marsupials Macropus eugenii (tammar wallaby) and Thylogale thetis (red necked pademelon). AB - The effects of water restriction on nitrogen metabolism were compared in the semi arid adapted tammar wallaby (Macropus eugenii) and a wallaby from a moist forest environment, the red-necked pademelon (Thylogale thetis). On a medium (9 to 13%) protein diet water restriction depressed dry matter and nitrogen intakes in both species. Nitrogen balance remained positive, but fell further in the pademelons. Urea excretion decreased in the tammars, but increased in the pademelons. Urea recycling as a proportion of urea entry rate tended to increase in the tammars but not in the pademelons. These findings suggest that T. thetis is not as well adapted as M. eugenii to coping with water shortages. In a second experiment water restriction depressed nitrogen balance in tammars on both high (15%) and low (5%) protein diets, but only on the latter diet did nitrogen balance become negative. Urea recycling was greater on the low than on the high protein diet, but was unaffected by water restriction. Although better able to withstand water stress, M. eugenii was unable to cope with both water stress and a low protein diet together. The reported ability of M. eugenii to maintain water intake by drinking sea water during the dry season when fresh water is unavailable and vegetation is of low protein content is thus of great ecological significance. PMID- 3837041 TI - Absorption tests in children with different states of malnutrition. PMID- 3837042 TI - An outbreak of food poisoning in a family due to Salmonella weltevreden at Delhi. PMID- 3837043 TI - Preventing hypothermia in trauma patients by microwave warming of i.v. fluids. AB - Warming plastic bags containing intravenous solutions in a microwave oven (MWO) raised the temperature from 18 degrees C to an average of 34.1 degrees, 40.2 degrees, and 42.8 degrees C when treated for 120, 150, and 160 seconds, respectively. Fluids at 18 degrees C, when passed through a blood warmer, resulted in temperatures at the distal end (DE) of about 27 degrees C; but if the bags were priorly warmed to 42 degrees C, fluids arrived at the DE at a temperature of about 30 degrees C. Fluids heated by MWO to 42 degrees C through a single short tubing 180 cm long arrived at the DE at a temperature of 33.7 degrees C. Fluids administered at operating room ambient temperature of 18 degrees C arrived to the DE with a temperature of about 19 degrees C, thus most likely contributing to lowering the body temperature of traumatized patients treated with large volumes given at rapid flows. One group of 19 patients undergoing repair of injuries to extremities received infusions warmed by MWO to 42 degrees, while other groups received them at about 20 degrees. After an initial fall, average temperature in the former tended toward normal levels while in the latter, body temperature declined. The simple expedience of MWO warming of the bags to 42 degrees C, and flowing through shorter administration tubing, appears to ameliorate this complication and in some cases prevents it. PMID- 3837044 TI - Pediatric carbon monoxide toxicity. AB - We report a series of 28 pediatric carbon monoxide exposures. Sixteen patients (57%) were judged to have potentially toxic carboxyhemeglobin (COHb) levels (greater than 15%). In this group the range of COHb blood levels was 16.7% to 44.0% (mean = 26.5%). An unusually high incidence of syncope (56.3%, 9/16) and lethargy (68.7%, 11/16) was observed. Every patient with a COHb level greater than or equal to 24% experienced syncope; a marked departure from published adult values. Lethargy was reported at a mean COHb concentration of 25.9%. All patients with levels over 25% COHb, neurologic findings, acidosis, or syncope were considered candidates for hyperbaric oxygen therapy (HBOT). No morbidity from HBOT was encountered. Eighty-nine percent (25/28) of the patients are reportedly doing well, with no late sequelae identified. Delayed neurologic sequelae in three patients include chronic headaches, memory difficulties, or decline in school performance. PMID- 3837045 TI - Central anticholinergic syndrome in a child: a case report. AB - A 2-year-old boy developed classical signs and symptoms of the central anticholinergic syndrome after ingesting twenty 4-mg tablets of the antihistamine cyproheptadine (Periactin). His symptoms were dramatically reversed by the intravenous administration of physostigmine. The physiology of the anticholinergic system and physostigmine are discussed along with the indications, toxicity, and dosing of physostigmine. PMID- 3837046 TI - Acute pericarditis. AB - There are many causes of acute pericarditis (inflammation of the pericardium) and diagnosis is often difficult owing to the dynamic nature of the disease. History and physical examination, augmented by radiographic and ECG studies, will allow the diagnosis to be made in the majority of cases. The ECG typically undergoes a four-stage evolution, and frequent reassessment of the patient is essential. Outpatient treatment is usually successful, although a subgroup of these patients require hospitalization. PMID- 3837047 TI - Flexible fiberoptic sigmoidoscopy in the emergency department. AB - Endoscopic examination of the large bowel is an historically old procedure. It has become an important element in the initial evaluation of colorectal disorders. Recently the flexible fiberoptic sigmoidoscope (FFS) has displaced the rigid scope because of increased patient comfort and compliance and markedly improved accuracy in diagnosing left colon lesions. The FFS is a valuable adjunct to the routine investigation of acute and chronic colorectal complaints seen in the emergency department. It has been endorsed by the American Cancer Society and is an easily learned and safe procedure when taught properly. PMID- 3837048 TI - Septic shock (Part 1). AB - Septic shock is a distinct clinical entity with an overall mortality of 30% to 40%. Gram-negative organisms are the most frequently identified causal agents. The shock syndrome appears to result from activation of complement, coagulation, kinin, endorphin, and other hormonal systems. Physiologic abnormalities include hypotension, metabolic acidosis, increased cardiac index, and decreased tissue extraction of oxygen. Clinicians must entertain the diagnosis of septic shock in a variety of settings, as prognosis is affected by early institution of therapy. Treatment is directed toward control of infection with antibiotics and surgical drainage and cardiorespiratory support utilizing fluids and pressor agents. Future therapeutic options may include naloxone, cyclooxygenase inhibitors, and antiserum to endotoxin. PMID- 3837049 TI - Ponder physostigmine use. PMID- 3837050 TI - Elective diagnostics in the emergency department. PMID- 3837051 TI - 24-hour coverage: economics, academics, or comforts? PMID- 3837052 TI - Incidence of 24-hour faculty coverage in teaching EDs. AB - There is growing concern in academic emergency medicine as to the appropriateness of 24-hour faculty coverage in the teaching emergency department. We surveyed 170 teaching emergency departments, 49 of which had approved emergency medicine residencies, asking for information regarding 24-hour faculty coverage. We were able to separate each department into one of 15 profiles based on the two variables of average ED yearly census and hospital type. Seventy-three percent of university teaching hospital EDs and 65% of those with emergency medicine residencies have 24-hour faculty coverage; 83% of private teaching hospital EDs and 100% of those with emergency medicine residencies have 24-hour faculty coverage; and 79% of city/county teaching hospital EDs and 80% of those with emergency medicine residencies have 24-hour faculty coverage. PMID- 3837053 TI - Genetic variation in low density lipoprotein. Beginning of a new era? PMID- 3837055 TI - Potentialities of immunocompetent cells in high and low antibody-producing lines of mice obtained by selective breedings for responsiveness to flagellar or somatic antigens of Salmonellae. AB - The genetic modifications of immunocompetent cell functions were investigated in high (H) and low (L) antibody responder lines of mice obtained by selective breeding for responsiveness to flagellar and somatic antigens of Salmonellae (Selection III and Selection IV, respectively). Several lines of evidence converge to demonstrate that the differences in antibody responses between the H and L lines of the two selections are not due to the modification of antigen handling by macrophages. This contrasts with previous observations that macrophages play a major role in interline differences in Selections I and II. The choice of antibody titres after secondary challenge as the phenotypic character in Selections III and IV may explain why the regulatory role of macrophages was minimized, compared with Selections I and II which were carried out for primary responses to heterologous erythrocytes. In Selections III and IV, H mouse lymphocytes were more efficient than L mouse lymphocytes in restoring immunoresponsiveness to irradiated hosts. In contrast, allogeneic skin grafts were rejected at a similar rate in L as well as in H mice of the two Selections and in vitro lymphoproliferative responses to T cell mitogens were also equivalent in the four lines. PMID- 3837054 TI - An idiotope expressed on a monoclonal antibody specific for human haemoglobin beta chain and naturally occurring immunoglobulin(s). AB - HId-1A (gamma 1:kappa), HId-2a (mu:kappa) and HId-4a (gamma 1:kappa) monoclonal anti-idiotopes of BALB/c origin were induced by the human haemoglobin-reactive, B10.D2-derived monoclonal antibody Hb-2d. HId-1a and HId-4a seem to react with the same idiotope and may, in fact, be encoded by the same V, D and J genes. HId 2a, on the other hand, seems to react with an idiotope different from that recognized by the other two anti-Id's and present in the sera of non-immune B10-H 2 congenic mice. HId-2a, but not HId-1a or HId-4a, may react with an idiotope in or near the antigen binding site of Hb-2d. Naturally occurring immunoglobulin carrying the HId-2a idiotope was affinity-purified from the pooled sera of B10-H 2 congenic mice and partially characterized. It possesses primarily the gamma 2b heavy chain, but small amounts of gamma 1, gamma 2a and mu heavy chains are also detectable. The kappa and lambda 1 light chains are both present in significant amounts. In addition, the affinity-purified immunoglobulin is unreactive with human haemoglobin, is not a rheumatoid factor and does not express in detectable amounts the idiotope recognized by HId-1a and HId-4a. It is possible that all or some part of this polyclonal reagent is specific for antigens normally present in the environment. PMID- 3837056 TI - [Comparison of echocardiographic findings in patients with coronary triple vessel disease and dilated cardiomyopathy]. AB - Echocardiographic findings of 11 patients with dilated cardiomyopathy (DCM) were compared with those of 11 patient with coronary triple vessel disease, who showed extensive left ventricular (LV) wall motion abnormalities (abnormal LV regional wall motion observed in more than six of seven segments as classified by AHA) and a dilated LV cavity (LVEDVI: 120 ml/m2 or greater), consistent with so-called ischemic cardiomyopathy (ICM). Short-axis two-dimensional echocardiograms of the left ventricle at the mitral valve, papillary muscle, and apical levels were divided equally into eight segments starting from the posterior aspect of the right side of the interventricular septum. Non-uniformity of LV regional wall motion abnormalities was demonstrated in seven patients (64%) with DCM and 11 patients (100%) with ICM, and that of LV regional wall motion abnormalities of more than two degrees was observed in one patient (9%) with DCM and nine patients (82%) with ICM. LV regional wall thinning was observed in two patients (18%) with DCM and 11 patients (100%) with ICM. Increased echo intensity of the LV regional wall was observed in only four patients with ICM. Two patients (18%) with DCM and 11 patients (100%) with ICM had episodes of chest pain and the former two had LV regional wall thinning, suggesting the possibility of post-myocarditis cardiomegaly. Abnormal Q waves in the electrocardiograms were observed in 10 patients (91%) with ICM and in two (18%) with DCM. Exercise ECG tests were positive in nine of 11 patients with ICM, but in none of the five DCM examined.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837057 TI - [Reversible asynergy in acute transmural myocardial infarction: evaluations of patients with inferior infarction]. AB - To evaluate the significance of chronological changes in wall motion abnormalities, echocardiography was performed for 46 patients with acute transmural inferior myocardial infarction without previous infarction or complications. Asynergy was analyzed by two-dimensional echocardiography (2-D Echo) on the third day (acute stage) and the 28th day (convalescent stage) after the onset of infarction. Asynergy was quantitatively estimated by dividing the left ventricle into 17 segments. The degree of asynergy was graded on a four point scale as dyskinesis = 3, akinesis = 2, hypokinesis = 1, and normokinesis = 0. The total wall motion score (TWMS) was calculated on the both days. Improvement of asynergy was observed in 39 cases (84.8%). Among them, both the extent and degree of asynergy were improved in 17 cases (37.0%). In 10 cases (21.7%) the extent of asynergy was reduced. In the remaining 12 cases (26.1%), only the degree of asynergy was decreased. Concerning the relationship between the degree of asynergy on the 3rd day and the subsequent alteration of asynergy on the 28th day, two of four dyskinetic segments still had dyskinesis, and the other two reverted to akinesis. Among 156 akinetic segments, 80 did not change, but 58 reverted to hypokinesis and 18, to normokinesis. Among 82 hypokinetic segments, 48 did not change, but 34 became normal. The relationship between severity of asynergy on the third day indicated by the total wall motion score (TWMS 3rd) and the improvement in the score on the 28th day (TWMS 28th) was investigated in three patient groups: group-A (n = 19) showed TWMS 3rd greater than 9; group-B (n = 22), 9 greater than or equal to TWMS 3rd greater than or equal to 3; group-C (n = 5), TWMS 3rd less than 3. The frequency of "no improvement" was slightly higher in the group-C (62.5%) than in the group-A (52.1%) and in the group-B (56.4%). On comparison, improvement of asynergy was observed in the group-A in 47.9% and in the group-B in 43.6%, but the rate of resolution of asynergy was higher in group-B (53.6%) than in the group-A (40.3%). In the group-C, there was no case of significant coronary artery stenosis greater than 75% in diameter and sigma CPK was smaller than in the other two groups (p less than 0.005).(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3837058 TI - [Two-dimensional echocardiography in ventricular septal rupture after acute myocardial infarction]. AB - We studied the echocardiographic findings of 11 patients with proven ventricular septal defect following acute myocardial infarction. There were seven men and four women whose ages ranged from 48 to 77 years, with an average of 66 years. Nine patients had acute anterior and two acute inferior myocardial infarctions. Two-dimensional echocardiography (2DE) was performed for eight patients and M mode echocardiography for all 11 patients. In all eight patients with apical four chamber view, in whom four had additional apical short-axis view, the septal defect was directly visualized, but it was not detected by M-mode echocardiography. The defect was visualized in the apical region of the septum in all eight patients by the apical four-chamber view. The anteroapical region of the septum was the site in three with anterior infarction and the inferoapical region in one with inferior infarction by the apical short-axis view. In five of the eight patients who underwent 2DE, surgical or autopsy confirmation of the defects was obtained, with a complete agreement with the echocardiographic findings. In two patients with echocardiographic findings of septal defects, the perforations were confirmed at surgery. Two cases with aneurysmal bulges of thin septum into the right ventricle had the thin necrotic muscle in the anteroapical regions. One patient with a cystic bulge into the septum showed an irregular tear in the inferoapical region of the septum at surgery. In eight patients, the left ventricular wall motion was assessed by 2DE. Six patients revealed hyperkinetic motion in the non-infarcted areas of the basal septum or posterior wall, and these cases had good prognosis. We concluded that 2DE is a sensitive, prompt and safe technique for diagnosing and observing the risk of complicating septal defects in acute myocardial infarction. In this respect, both the apical four chamber and short-axis views should be utilized for the topographic diagnosis of the defect. PMID- 3837059 TI - [Transient appearance of asynergy on the echocardiogram and electrocardiographic changes simulating acute myocardial infarction following non-cardiac surgery]. AB - Two-dimensional echocardiography (2-D echo) was performed for six postoperative patients who had acute myocardial infarction (AMI)-like electrocardiographic (ECG) changes. All but one, who had coronary T waves, demonstrated abnormal Q waves in V1-V4, decreased amplitude of R waves, and low voltage in limb leads. ST elevation was also observed. Abnormal Q waves in V1-V4 began to resolve in a few days and the QRS complex reverted to normal within one month; however, coronary T waves were observed for at least three months. In the remainder one, persistent Q waves were present from the onset. 2-D echo, performed simultaneously with ECG, showed akinesis or dyskinesis accompanied by ventricular dilatation, not only at the anterior septum, anterior wall and around the apex, but in more extensive areas in four of five cases with abnormal Q waves in V1-V4. In two other cases, which showed abnormal Q or coronary T waves alone, akinesis was limited to the anterior septum and to the septal site and anterior wall of the apex. All abnormal findings on 2-D echo completely resolved within one month, as the ECG findings returned to normal. Compared with typical AMI showing abnormal Q waves in V1-V4, asynergy was recognized in more extensive areas and abnormal wall motion indices significantly improved in the postoperative cases. In the postoperative cases with AMI-like ECG, the CPK-MB fraction increased; however, the peak level of CPK was lower than that in typical AMI. On the basis of these results, transient AMI-like ECG findings in postoperative cases are due to extensive myocardial damage, which is probably derived from focal myocytolysis. PMID- 3837060 TI - [Mechanism of systolic anterior motion and left ventricular outflow obstruction in hypertrophic obstructive cardiomyopathy]. AB - Two-dimensional echocardiographic studies were performed for 22 patients with asymmetric septal hypertrophy and systolic anterior motion (SAM) of the mitral valve to clarify the mechanism of SAM and left ventricular outflow obstruction. The long-axis view of the left ventricle showed that a distal portion of the anterior mitral leaflet became surplus when the mitral valve was closed in 15 of 16 patients with SAM-septal contact and in four of six patients without it. In these patients, the mitral leaflet coaptation was displaced anteriorly, and/or the anterior leaflet was elongated, showing an anterior motion. In an unusual patient with SAM-septal contact, a distal portion of the long posterior mitral leaflet was surplus. The remaining two patients without SAM-septal contact had a rather widely coapted portion of the mitral leaflets. The distal surplus portion and the coapted portion of the mitral valve were displaced anteriorly prior to the onset of ejection, and moved forward and protruded into the outflow tract more rapidly and more excessively than the papillary muscles during early to mid systole in all patients. Then, the distal mitral valve and the chordae tendineae adopted the configuration of an inverted V in mid systole. The tip of the surplus leaflet contacted the interventricular septum in patients with SAM-septal contacts. In the short-axis view of the left ventricle, the central portion of the distal mitral valve moved forward excessively and bent like an inverted U during early to mid systole. Therefore, SAM of the distal mitral valve is thought to be caused by the hydrodynamic force generated by the ejection flow. This force is supposed to be not only due to the Venturi effect, but is more properly understood as a "pushing force". Left ventricular outflow obstruction is considered to be formed by the protruding distal mitral valve and the hypertrophied septum. PMID- 3837061 TI - [Magnetic resonance imaging of cardiovascular thrombi]. AB - Magnetic resonance imaging (MRI) was performed for 10 patients with cardiovascular thrombi using a 0.1-Tesla resistive type apparatus (ASAHI MARK-J). In all cases thrombi were clearly imaged by NMR and their shapes closely resembled those imaged by X-ray CT. Mural thrombi located within left ventricular aneurysms of two patients with old anteroseptal myocardial infarction were semilunar in form. A mural thrombus in the right ventricle of a patient with cardiovascular Behcet's disease was also clearly imaged. Mural thrombi within the enlarged left atrium of two patients with mitral valve stenosis and insufficiency were clearly demonstrated in both cross- and longitudinal sections. In three patients with thoracic aortic aneurysm, mural thrombi were recognized within the local dilatations of the aorta. In two patients with dissecting aortic aneurysm, mural thrombi were visualized within false lumen using MRI. Mean T1 values and standard deviations for the left ventricular cavity, the left ventricular wall, and the thrombi were 639 +/- 49, 349 +/- 17 and 316 +/- 84 msec, respectively. Mean T1 values of the thrombi were usually shorter than those of the left ventricular wall. Some supposedly fresh thrombi had longer T1 values, however. PMID- 3837062 TI - [Quantitative evaluation of various cardiac diseases using body surface mapping]. AB - Body surface mapping (map) was used to evaluate various cardiac diseases quantitatively. For 30 cases with old anterior myocardial infarction (AMI), map parameters were compared with infarct size assessed by left ventriculography and 201Tl myocardial scintigraphy (LV% asynergy and 201Tl% defect, respectively). Parameters used in the present study were nSubtraction 40 (sigma Subtr. 40), which were obtained by the summation of voltages less than the lower limit of normal range (mean--2SD) at 40 msec from the QRS onset and nSubtraction 10-60 (sigma Subtr. 10-60), which was obtained by the integral of voltages below the normal range, calculated each 10 msec to 60 msec, as well as the number of lead points with Q waves of 30, 40 msec duration (nQ30, nQ40), and the summation of R voltages over the entire body surface (sigma R). In 19 cases with aortic regurgitation (AR), R and S voltages in each lead were compared with left ventricular diastolic dimension (LVDd) obtained by echocardiography. In 43 healthy persons and two patients with RV pacing, the ventricular activation time was measured in each lead (VAT map). In AMI, nSubtr. 40 correlated best with LV% asynergy (r = 0.70, p less than 0.001). EF and 201Tl% defect were related to nSubtr. 10-60 (r = 0.83, p less than 0.001 and r = 0.85, p less than 0.001, respectively).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837063 TI - [Estimation of location and size of myocardial infarction from body surface potentials using the ECG inverse solution method]. AB - This paper describes a non-invasive mathematical method for estimating the locations and sizes of myocardial infarction using body surface electrocardiographic mappings. The inverse calculation is the theoretical basis of our method of estimation. First, the boundary integral equations were used to relate body surface and epicardial potential distributions. Next, a spherical harmonic expansion was used to solve the equations in order to obtain the epicardial potentials from the body surface potentials. The validity of the method was assessed by animal experiments and the clinical application. Body surface potentials were recorded using a 128 channel electrocardiographic mapping device equipped with a 16 bit microprocessor. In the animal study, the epicardial potentials were recorded by another potential mapping device simultaneously with body surface potential recordings. In the animal study, 60 epicardial electrodes and a freezing unit were mounted on a elastic fabric sack and attached to the heart. After completion of open chest surgery, freezing myocardial injury was incurred by perfusing -50 degrees C acetone-dry ice cryogen into the freezing unit. Twenty minutes after the start of freezing, ST elevations of the body surface and epicardial potentials were simultaneously recorded. An ST subtraction map was compiled as the difference between the maps before and after the myocardial freezing injury. Then, an inverse calculation was applied to the ST subtraction potentials to estimate the epicardial ST elevation. The geometric parameters of each electrode were determined from stereometry using two dimensional X-ray images. In the clinical study, the body surface potentials of a patient with old myocardial infarction were recorded. The abnormal Q subtraction map was calculated as the difference between the measured and standard potentials of a normal subject. In the inverse calculation, the geometric shape of the heart and the body surface were determined from cross-sectional body images of computed tomography. The location of the infarction was estimated independently using coronary arteriography and left ventriculography. The results obtained were as follows: Experimentally, the estimated epicardial ST elevations correlated well with the measured ones. The area of estimated ST elevation included the portion of the myocardial injury produced by the freezing procedure, although the area estimated was relatively small compared with the actual one. Clinically, the estimated abnormal Q area correlated well with the area of the left anterior descending artery in which severe stenosis was detected by coronary arteriography.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3837064 TI - [Right ventricular dysplasia: clinical characteristics of five patients]. AB - The purpose of this study was to elucidate the clinical features of right ventricular (RV) dysplasia, a recently described clinical entity characterized by RV myopathic changes and ventricular tachycardia of left bundle branch block morphology. Five cases were reported, in which the diagnosis was established according to the criteria of Marcus. Case 1, a 33-year-old man, was referred to us for evaluation of his paroxysmal ventricular tachycardia of five years duration. Case 2, a 38-year-old man, was admitted because of shock caused by ventricular tachycardia. In both cases, the QRS configurations during ventricular tachycardia were those of the left bundle branch block pattern, and electrocardiograms during sinus rhythm showed T wave inversions in the right precordial leads and late ventricular potentials. Two-dimensional echocardiography, radionuclide angiography and contrast angiography disclosed RV dilatation and dysfunction with normal left ventricular (LV) function. The biopsied myocardium from the right and left ventricles in Case 2 revealed myocytolysis, a paucity of myofibrils and proliferation of collagen fibers. Case 3, a 73-year-old woman began to experience exertional dyspnea since 16 years of age. Her treatment consisted of bed rest, diuretics and digitalis. In December 1983, her New York Heart Association functional class was III, and physical examinations disclosed a Levine III/VI systolic murmur suggestive of tricuspid regurgitation, jugular vein dilatation, hepatomegaly, and pretibial edema. Electrocardiogram showed atrial fibrillation, incomplete right bundle branch block and T wave inversions in the precordial leads. Chest radiograph revealed marked cardiomegaly (cardiothoracic ratio of 92%). Echocardiography, radionuclide angiography and contrast angiography revealed marked RV dilatation, depressed ejection fraction (RV end-diastolic volume index of 342 ml/m2, and RV ejection fraction of 28%). Case 4, a 20-year-old man, was admitted with a chief complaint of palpitation. Case 5, a 19-year-old man, was referred to us for the evaluation of asymptomatic cardiomegaly, and his cardiothoracic ratio was 54%. A 12-lead electrocardiogram showed right bundle branch block and T wave inversions in the right precordial leads. Ambulatory electrocardiography revealed frequent premature ventricular complexes of the left bundle branch block pattern. Echocardiography, radionuclide angiography, and contrast angiography disclosed RV dilatation and dysfunction in both cases, and mild LV dilatation and dysfunction (LV end-diastolic volume index of 149 ml/m2, LV ejection fraction of 48%) in Case 4.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3837065 TI - [Effect of calcium antagonist (diltiazem) on left ventricular diastolic properties in essential hypertension: a pulsed Doppler echocardiographic study]. AB - To evaluate the acute effect of diltiazem on left ventricular diastolic properties, we measured transmitral flow in 15 patients with essential hypertension using pulsed Doppler techniques. Before administering diltiazem, the peak velocity (R) and the deceleration rate of rapid inflow decreased significantly as compared with healthy subjects, but the peak velocity during atrial contraction (A) and the A/R increased significantly. Immediately after the intravenous administration of 10 mg diltiazem, blood pressure decreased from 157 +/- 22/96 +/- 12 mmHg to 135 +/- 19/82 +/- 11 mmHg (p less than 0.001) and the heart rate increased from 69 +/- 10/min to 74 +/- 10/min (p less than 0.05). However, 30 minutes after the injection, these returned to control values. The peak velocity and deceleration rate of rapid inflow were 52 +/- 9 cm/sec and 227 +/- 65 cm/sec2, respectively, before administering diltiazem, and five minutes after injection, these parameters increased to 63 +/- 13 cm/sec (p less than 0.001) and 292 +/- 82 cm/sec2 (p less than 0.001), respectively. Thirty minutes later, these values leveled off at 58 +/- 12 cm/sec (p less than 0.01) and 257 +/ 76 cm/sec2 (p less than 0.05), respectively. The peak velocity during atrial contraction was 67 +/- 12 cm/sec before administration, and this did not change significantly after injecting diltiazem. Significant increases in peak velocity and deceleration rate of rapid inflow and decreases in the A/R continued after the blood pressure and heart rate returned to control values. It was therefore concluded that diltiazem improves impaired early diastolic left ventricular filling in essential hypertension. PMID- 3837066 TI - [Human adult left atrial volume estimated by M-mode echocardiography]. AB - There are few systematic reports of the regression equation for humans, for estimating left atrial volumes from the anteroposterior left atrial dimensions measured by M-mode echocardiography (LADAP). In addition, several pitfalls were inherent in the M-mode method. In view of these pitfalls, we estimated the anteroposterior left atrial dimensions by directing the ultrasonic beam toward the "center" of the left atrium under the guidance of two-dimensional echocardiography. Simultaneously, we estimated left atrial volumes from anteroposterior and left lateral biplane left atrial angiocardiograms using a film changer at three frames per sec. The maximum elapsed time between the echocardiographic and angiocardiographic studies was two days. Left atrial volumes were calculated using the method of Sauter et al. Maximum left atrial volume was calculated at the end of the T wave. The results were as follows: For phantom experiments, a cylindrical container with varying amounts of contrast material was tested by biplane angiography using a film changer. The actual volume (x) and the calculated volume (y) were in good agreement with the regression equation; y = 1.05x-0.1 (r = 0.99, p less than 0.001, n = 6). The anteroposterior left atrial dimension in M-mode echocardiography (LADAP: x axis) and left atrial volume (ml) angiocardiographically obtained (y axis) showed the curvilinear regression equation; y = 1.4x3+23 (r = 0.83, p less than 0.01, n = 19). The relation between the left atrial cross-sectional area (cm2) obtained from the left ventricular long-axis view by two-dimensional echocardiography (x axis) and the left atrial volume (ml) by angiocardiography using a film changer (y axis) showed the regression equation; y = 1.2x1.5+17 (r = 0.82, p less than 0.01, n = 14). As a preliminary study, we calculated left atrial volume (LAVcine) for five patients by performing biplane cineangiocardiography at 50 frames per sec. The results were nearly the same as those obtained using a film changer. In summary, the derived equation predicts left atrial volume using M-mode echocardiography with considerable accuracy. PMID- 3837067 TI - [Genesis of protodiastolic extra heart sound in mitral stenosis: a phono-, apex-, echo- and cineangiographic study]. AB - To clarify the genesis of a protodiastolic extra heart sound (S3') which was occasionally recorded at about the beginning of a diastolic rumble in mitral stenosis (MS), phono-, apex- and echocardiography were performed for 33 patients with MS, and left ventricular (LV) cineangiography was performed for eight of them. The patients were classified as S3'(+) and S3'(-) groups, according to whether they had S3'. Results were as follows: The S3' was synchronous with the rapid filling (RF) wave of the apexcardiogram (ACG). Its amplitude was proportional to the size of the RF wave. The RF wave was significantly sharper in the S3'(+) group as compared with that of the S3'(-) group. The S3' always appeared after onset of dispersion of dots in the velocity pattern of blood flow at the mitral valve orifice according to pulsed Doppler echocardiography. There was no significant difference between the S3'(+) and S3'(-) groups in the region of the mitral valve orifice according to two-dimensional echocardiography, and at the peak rate of change of the LV dimension during diastole as determined by M mode echocardiography. The peak rate of change of the long-axis dimension of the LV during diastole as determined by cineangiography was significantly greater in the S3'(+) group than in the S3'(-) group. However, there was no significant difference between the two groups regarding the peak rate of change in the short axis dimension of the LV during diastole as determined by cineangiography. The amplitude of the early diastolic dip of the interventricular septum (IVS) was significantly greater in the S3'(+) group as compared with that of the S3'(-) group. The amplitude of the S3' and the size of the RF wave correlated positively with the amplitude of the early diastolic dip of the IVS in pts with atrial fibrillation. Fractional shortening of the LV ascertained by M-mode echocardiography was significantly greater in the S3'(+) group than in the S3'(-) group. The end-systolic dimension of the LV tended to be less in the former than in the latter group. In conclusion, the S3' in MS was considered to be a third heart sound. Expansion along the long-axis of the LV and its sudden change in early diastole may account for the genesis of the S3', and this expansion may be accentuated by restoring force and active diastolic suction of the LV, and by velocity, direction and spread toward the cardiac apex of the stenotic mitral jet flow. PMID- 3837068 TI - [Mitral regurgitation: detection and quantitative evaluation by two-dimensional Doppler echocardiography]. AB - Mitral regurgitation was detected and quantitatively evaluated using two dimensional Doppler-echocardiography. The subjects consisted of 74 cases having a variety of heart diseases, who underwent left ventriculography within one week before or after the Doppler study. Among 50 patients with mitral regurgitation confirmed by left ventriculography, the Doppler study detected mitral regurgitant flow signals in 46, for a sensitivity of 92%. Minimal mitral regurgitation in four cases could not be detected by Doppler studies. Twenty-four patients had no mitral regurgitation according to left ventriculography; all but one also had no mitral regurgitation by Doppler study, for a specificity of 96%. In one false positive case, typical mitral regurgitant flow signals were detected in an area localized within the left atrial cavity near the mitral valve orifice. The possibility remains that left ventriculography missed this minimal regurgitation. For quantitative assessment of mitral regurgitation, the following two methods were used. Three long-axis views through the lateral, middle and medial parts of the mitral valve, and a short-axis view at the level of the mitral orifice were imaged via the parasternal approach. The area where mitral regurgitant flow signals were detected was mapped on each cross-sectional echocardiogram, then the distance attained by the regurgitant flow from the mitral valve and the area covered by the regurgitant flow were determined. The maximal distance among the three long-axis views and the sum of the distances in these views was parallel to the severity of mitral regurgitation as assessed by left ventriculography.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837069 TI - [Late diastolic mitral regurgitation: pulsed Doppler echocardiographic study]. AB - Since the description of late diastolic mitral regurgitation (MR) detected by left ventriculography, the risk of overestimating systolic MR has been pointed out. However, it has not been well studied by pulsed Doppler echocardiography, though this method is thought to be extremely useful to analyze systolic MR. The purpose of this study was to evaluate the usefulness of pulsed Doppler echocardiography in assessing late diastolic MR and to clarify the pathophysiology of this MR. With the probe in the apical position, the blood flow pattern at the left atrial outflow tract was investigated in 226 consecutive cases who underwent left ventriculography. Late diastolic MR, which could not be attributed to ventricular premature contraction, was observed in 10 cases (4.4%) by left ventriculography. Meanwhile, by pulsed Doppler echocardiography, late diastolic disturbed flow directing towards the left atrial cavity in late diastole was detected in 15 cases (6.6%) including 10 cases with positive left ventriculographic MR. Among these 15 cases, 14 (93%) had atrial fibrillation and exhibited this MR only in the cardiac cycle with prolonged R-R intervals. The limitation in number of cardiac cycles which could be analyzed and the rapid heart rate eliminating the appearance of the beat with prolonged R-R intervals may be the reasons for the paucity of late diastolic MR by left ventriculography. Ten cases (66%) of late diastolic MR, including one with sinus rhythm, had aortic regurgitation, three cases showed high-grade systolic MR, and two had atrial septal defect. The simultaneous recording of pulmonary arterial wedge pressure and left ventricular pressure in three patients show a reversal of pressure gradient across the mitral valve in late diastole when the R-R interval was prolonged. In conclusion, pulsed Doppler echocardiography is useful in detecting late diastolic MR, and in reducing overestimates of systolic MR by ventriculography which was induced by erroneous addition of late diastolic MR, because Doppler method has better time resolution in phase analysis. We believe that incomplete premature mitral valve closure caused by a delay in left ventricular contraction following prolonged R-R intervals, and the reversal of left atrial-left ventricular pressure gradient induced by left ventricular over filling played important roles in the occurrence of late diastolic MR. PMID- 3837070 TI - [Two-dimensional echocardiographic measurement of the surgical aortic ring: its clinical significance in non-rheumatic regurgitation and in predicting the sizes of prosthetic valves]. AB - The purpose of the present study was to determine the usefulness of two dimensional echocardiographic measurements of the surgical aortic ring diameters (ARDs) in predicting correct sizes of the prosthetic valves and in determining the mechanisms of aortic regurgitation. Forty patients with aortic regurgitation who underwent prosthetic valve surgery, and 20 normal controls were selected for the study. The 40 patients consisted of 21 with rheumatic aortic regurgitation (RHD group), and 19 with non-rheumatic non-inflammatory aortic regurgitation (non RHD group). Aortic regurgitation due to annuloaortic ectasia with or without the stigmata of Marfan's syndrome and bicuspid aortic valves were excluded from the non-RHD group. Echocardiographic estimates of the ARDs proved to be useful for predicting prosthetic valve sizes considering the good correlation between the echocardiographic and direct measurements (r = 0.814), despite a slight tendency to echocardiographic underestimation. The ARDs was 24.7 +/- 3 mm in the RHD group, 28.8 +/- 2.9 mm in the non-RHD group and 21.8 +/- 1.7 mm in the normal controls. The ARDs in the RHD group was significantly larger than that of the normal controls (p less than 0.001), and the ARDs of the non-RHD group was significantly larger than that of the RHD group (p less than 0.001). There were loose correlations between the ARDs and left ventricular end-diastolic dimension, and between the ARDs and left ventricular end-systolic dimension in the RHD group (r = 0.549 and r = 0.455, respectively), but there were no correlations between these two parameters in the non-RHD group. In four patients with aortic regurgitation in the non-RHD group, mitral regurgitation coexisted. Both the ARDs and the mitral ring dimension were markedly increased in these patients. It is concluded that in the non-RHD group, marked dilatation of the ARDs appears to be one of the cause of aortic regurgitation. PMID- 3837071 TI - [Value and problems of magnetic resonance imaging in the diagnosis of aortic dissection]. AB - Nuclear magnetic resonance imaging was performed for 14 patients with aortic dissection using a 0.15 T resistive magnetic imaging system (Toshiba MRT-15A). The diagnosis was confirmed by X-ray computed tomography. The scan time was 15 minutes, and five or 10 slices were obtained simultaneously. The imaging was made using spin echo method (repetition time: TR = 200-800 msec, and echo delay time: TE = 40 msec). The natural contrast between flowing blood and stationary material permits the clear demonstration of the intimal flap of aortic dissection. The intimal flap was demonstrated in seven cases as a curvilinear high intensity band within the dilated aorta in consecutive sections. The rapidly flowing blood in the narrow true lumen produced little or no signal, while eddy currents within the false lumen usually produced signals. The thrombi in the false lumen had high intensity. In seven cases, the false lumen was completely filled with thrombi and the intimal flap could not be observed on nuclear magnetic resonance images. PMID- 3837072 TI - [Echocardiographic features of small heart]. AB - To clarify the clinical significance of a small heart; i.e., a small cardiac silhouette on chest radiography, an echocardiographic study was performed. Sixty persons with small heart according to cardiothoracic ratios less than or equal to 40%, and 23 age- and sex-matched normal controls (42% less than cardiothoracic ratio less than or equal to 50%) received two-dimensional and M-mode echocardiography. The body weights and body surface areas (BSA) in the small heart group were significantly less than those in the control group. On the lateral chest radiographs, numerous cases with small heart had straight spines and chests with decreased anteroposterior diameters. More than half of the small heart group had a variety of cardiovascular complaints, including chest pain, palpitation, dyspnea, and dizziness. Echocardiographic measurements were performed and hemodynamic indices were calculated. The results were as follows: Left ventricular dimension at end-diastole (LVDd), left ventricular dimension at end-systole (LVDs), left atrial dimension (LAD), and left ventricular mass (LV mass) of the small heart group were significantly less than those of the control group. There were, however, no differences in the values corrected by BSA (LVDd/BSA, LVDs/BSA, LAD/BSA and LV mass/BSA) between the two groups. We found no differences in hemodynamic indices (heart rate, stroke volume, ejection fraction, and cardiac output) at rest between the small heart and control groups. Nineteen cases (32%) had mitral valve prolapse (MVP) on echocardiography in the small heart group. Characteristic phonocardiographic findings were found in 11 cases with MVP (systolic click in four, mitral regurgitant murmur in three, and both in four).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837073 TI - [Diagnostic evaluations of 36 surgical patients confirmed by noninvasive technique, mainly by two-dimensional echocardiography]. AB - In 1983, 290 patients with congenital heart disease (CHD) underwent surgery at our institute. Among them, 36 (12%) had no preoperative catheterization or angiography. These 36 patients were categorized as group I consisting of 12 patients less than two months of age and group II consisting of 18 patients more than one year of age. The diagnosis was accurate in 34 of the 36 patients (94%). Assessment by two-dimensional echocardiography (2-DE) was incomplete for two patients. A secundum atrial septal defect in one patient diagnosed by 2-DE, proved at surgery to be a sinus venosus type atrial septal defect with partial anomalous pulmonary venous drainage. Another patient was diagnosed as having tetralogy of Fallot with the absent pulmonary valve by 2-DE, but anomalous origin of the right pulmonary artery from the ascending aorta was also found at surgery. There were 25 operations in patients less than two months of age, and 12 (48%) of them had surgery without catheterization (Group I). Most patients in Group I were less than two weeks of age (nine patients) and six of these were operated without catheterization (pure pulmonary atresia: 2, total anomalous pulmonary venous drainage: 2, interruption of the aorta: 1, tetralogy of Fallot with absent pulmonary valve: 1). Another two cases had surgery after only radial artery retrograde aortic arch visualization, then, preoperative intracardiac catheterization was avoided in eight (89%) of the nine patients. Atrial septal defect (ASD) and patent ductus arteriosus (PDA) patients, 25% and 69% of the cases, respectively, were operated on without catheterization. In conclusion, we can better maintain the general condition of critically-ill neonates and infants in surgery, when prompt and accurate 2-DE diagnoses are made for typical cases without catheterization and angiography. In older children of uncomplicated ASD or PDA with typical physical findings, we can avoid catheterization before surgery. If, however, information is insufficient for deciding surgery, we should carry out invasive examinations without hesitation. PMID- 3837074 TI - [Two-dimensional echocardiographic assessment of systemic-pulmonary shunts in infants with cyanotic heart disease]. AB - The growth of pulmonary arteries following systemic-pulmonary arterial shunt procedures in infants with cyanotic heart disease is a determining factor to the prognoses of those patients. We assessed the validity of two-dimensional echocardiography (2DE) in evaluating pulmonary arterial growth following shunt procedures. Blood flow through the shunts was measured at the times of surgery, and the correlations between shunt flows and postoperative clinical courses were studied. 2DE was validated by its assessments of the right pulmonary artery (RPA) with an excellent correlation between the RPA diameter on 2DE and that on angiography (r = 0.97) and/or the actual RPA diameter measured at the times of surgery (r = 0.96) in 20 patients. Ten patients with tetralogy of Fallot and pulmonary atresia were studied by 2DE pre- and postoperatively. The RPA diameters of six patients with effective shunts increased from 5.7 +/- 1.7 mm to 8.5 +/- 1.5 mm during six months after the shunts and their left ventricular end diastolic dimensions also increased significantly. But the RPA diameters in four patients with ineffective shunts did not show significant increases after the shunts. The shunt flows were correlated with the diameters of the anastomoses. The shunts which were obstructed within two years showed shunt flows of 83 +/- 26 ml/min, while the shunts which were patent for more than two years showed shunt flows of 320 +/- 126 ml/min. Serial measurements of RPA diameters by 2DE serve as a useful method of following patients after systemic-pulmonary shunts. The amounts of shunt flows were correlated with post-operative clinical courses over two year periods. PMID- 3837075 TI - [Aortic dissection presenting aortic regurgitation induced by diastolic prolapse of an intimal flap into the left ventricle: a case report]. AB - A case of aortic dissection associated with aortic regurgitation which was induced by diastolic prolapse of an intimal flap into the left ventricular outflow tract was reported. This 57-year-old man, referred for evaluation of sudden onset of chest oppression and a heart murmur, was hypertensive for several years. His admission blood pressure was 184/44 mmHg, and a systolic ejection murmur and a diastolic decrescendo murmur were audible along the left sternal border. Two-dimensional echocardiography revealed an intimal flap in the markedly enlarged aortic root. The intimal flap moved posteriorly in systole and anteriorly in diastole, and prolapsed into the left ventricular outflow tract during diastole. Associated with the movement of the intimal flap, an aortic cusp was shifted from its original position to the left ventricular outflow tract in diastole. Aortography disclosed type I aortic dissection and severe aortic regurgitation. After medical treatment for four months, the patient underwent a Bentall surgical procedure and recovered. Impaired coaptation of the aortic valve induced by diastolic prolapse of the intimal flap into the left ventricular outflow tract is a newly encountered echocardiographic finding in proximal aortic dissection. PMID- 3837076 TI - [Dysfunction of Carpentier-Edwards porcine mitral bioprosthesis causing a musical systolic murmur: a report of two cases]. AB - Two patients with disruption of Carpentier-Edwards porcine mitral bioprosthesis presenting with a musical systolic murmur were reported. The two patients noted sudden development of a loud musical murmur 4 (Case 1) and 6.5 (Case 2) years after surgery. Case 1 had associated heart failure. Phonocardiogram disclosed a loud musical systolic murmur with regular vibrations at 230-240 Hz in Case 1, and 250-260 Hz in Case 2. In Case 1, echocardiography demonstrated fine fluttering of the porcine mitral valve at the same frequency as the murmur. Doppler echocardiography revealed characteristic Doppler signals from the porcine valves at a frequency of 250-300 Hz with several harmonics above and below the baseline. In addition, in Case 2, similar Doppler signals were obtained from the aortic walls, ventricular septum and posterior wall of the left ventricle. In both cases, left ventriculograms demonstrated grade 3 mitral regurgitation without paravalvular leakage, and at surgery, the porcine bioprosthesis showed a tear in one of markedly thinned cusps, without evidence of calcification. It was considered that a torn cusp was the source of the murmur, and this, in association with the resonance of the entire heart, produced the loud musical murmur. Thus, a musical systolic murmur is suggested to be one of important signs of dysfunction of porcine bioprosthesis. PMID- 3837077 TI - [Acute idiopathic myocarditis having myocardial inflammatory swelling demonstrated by echocardiography: a case report]. AB - A case of acute idiopathic myopericarditis with transient severe swelling and akinesis of the interventricular septum on echocardiograms was reported. A 35 year-old man was admitted to our CCU because of cardiogenic shock five days after the onset of "common cold". Electrocardiograms revealed low voltage and ST segment elevation in all leads except for a VR and a VL. Serum CPK, GOT and LDH were slightly elevated. Echocardiograms showed severe asymmetrical septal hypertrophy (ASH, 20 mm), akinesis of the interventricular septum and moderate pericardial effusion. With improvement of the clinical course and of the hemodynamic data, the thickness and wall motion of the interventricular septum became normal. Serum antiviral antibodies were not elevated throughout the course. Transvenous percutaneous right ventricular endomyocardial biopsy revealed degeneration and fragmentation of the myofibrils with interstitial cellular infiltration and edema in the subacute phase (8th hospital day), but showed only focal fibrosis in the chronic phase. Coronary arteriograms and left ventriculograms in the chronic phase (50th hospital day) were normal. From these findings we can conclude that the severe transient ASH is due to myocardial inflammatory swelling. PMID- 3837078 TI - [Marked right ventricular outflow obstruction in two children with hypertrophic cardiomyopathy]. AB - Two children, aged one year and nine months, and six years, both with hypertrophic cardiomyopathy, presented as severe right ventricular outflow obstruction were presented. Initially, both of them were suspected of having heart disease because of precordial systolic murmurs. Their tentative diagnosis was pulmonary stenosis. Their apex cardiograms and carotid pulse waves were not diagnostic. Asymmetrical septal hypertrophy with systolic anterior motion of the mitral valve was identified by echocardiography in both cases. Cardiac catheterization revealed left ventricular outflow tract pressure gradients of 5 mmHg and 30 mmHg, respectively. The right ventricular peak systolic gradient was 100 mmHg and 82 mmHg and left ventricular end-diastolic pressure was 26 mmHg and 18 mmHg, respectively. Selective right and left ventricular angiocardiograms demonstrated severe right ventricular outflow obstruction, and hypertrophy of the interventricular septum. One of them underwent resection of the right ventricular outflow tract muscle, which showed histological findings characteristic of hypertrophic cardiomyopathy. This patient died suddenly at the age of 10 years. Infants or young children with hypertrophic cardiomyopathy often have associated predominant right ventricular outflow tract obstruction, progressive congestive heart failure, and death. Therefore, correct diagnosis and careful treatment are mandatory for proper management. PMID- 3837079 TI - Absorbed power distributions from two tilted waveguide applicators. AB - One major problem in microwave-induced clinical hyperthermia treatment of superficial tumours is to obtain therapeutic temperatures at the tumour periphery and adequate deep heating when using a single applicator. The use of multiple applicators has therefore been investigated in order to improve the power distribution. Anatomical surface topography often permits the application of two tilted applicators, e.g. in the head and neck area, on extremities and on large protruding tumours. Theoretical calculations of the absorbed power distribution from such an applicator configuration were performed in a homogeneous muscle equivalent medium. The power distribution from two conventional radiative apertures (TE10) was studied at different frequencies, aperture sizes, tilting angles and non-coherent or coherent fields in phase, both theoretically and with phantom experiments using a thermographic camera. With controlled phase relations between two tilted applicators excited at the lower microwave or upper radiofrequency band, the absorbed power distribution can be varied in a wide range. The theoretical calculations and thermographic phantom experiments in simple geometries give valuable information on absorbed power distributions and guidance for the location of temperature probes in clinical hyperthermia. PMID- 3837081 TI - Theoretical limitations on radiation into muscle tissue. AB - The radiation into muscle tissue from a planar array of magnetic dipoles is discussed. A figure of merit (gain) of an applicator involving power density at a point is defined. For constant illumination the gain is almost independent of frequency for a fixed aperture. Illuminations maximizing gain are tapered near the edge of the array and focused. PMID- 3837080 TI - Interstitial thermoradiotherapy: a technical and clinical study of 29 implantations performed at the Institut Gustave-Roussy. AB - In 1981, a protocol was developed at the Institut Gustave-Roussy, combining interstitial hyperthermia and brachytherapy. Twenty-nine implantations were performed in 23 patients. All the lesions except three were located in previously irradiated areas. The protocol consisted of interstitial hyperthermia, 44 degrees C for 45 min, immediately followed by iridium-192 brachytherapy, delivering a dose of 30 Gy in the first 17 implantations, and a dose of 40 Gy in the next 12 (the dose was increased because of two local relapses in the first 17 cases). Special 'metal-plastic' tubes have been designed to heat the tumour specifically and to spare the surrounding healthy tissues. Among the 25 implantations for which a complete thermal mapping was available, a minimum temperature of 44 degrees C was reached in 16 cases, 43 degrees C in 5 cases and 42 degrees C in 4. The temperature inhomogeneity within the treated volume was less than 1 degrees C in 16 cases, and up to 4 degrees C in only one instance. Short-term clinical results (at two months) are available for 23 implantations: a 100 per cent response rate and a 83 per cent complete regression rate was observed. Follow-up is still short for most patients and long-term local control cannot be evaluated. Treatment has been generally well tolerated despite prior irradiation. Thus, technically satisfactory hyperthermia could be obtained in most cases, short-term clinical results are encouraging, and the technique merits further study. PMID- 3837082 TI - Potentiation of melphalan by systemic hyperthermia in mice: therapeutic gain for mouse lung microtumours. AB - The effect of systemic hyperthermia at 41 degrees C on the response to melphalan (Mel) of KHT and RIF-1 lung microtumours was studied. Mice with KHT microtumours were treated on day 3 or 4 after inoculation and mice with RIF-1 microtumours on day 4. Results were compared with previously published data for 300-600 mm3 leg tumours and normal marrow stem cells, and therapeutic ratios (TR) were calculated. Therapeutic gain was found for both tumours but in RIF-1 at higher doses only, with TRs from 1.1 to 1.6 for KHT microtumours and from 0.8 to 1.4 for RIF-1. TR values were rather smaller for lung microtumours than leg tumours but the change in slope of the Mel dose response curve by heat was very similar. The results are discussed in the light of the likely difference of tumour milieu between leg tumours and lung microtumours. PMID- 3837083 TI - Heterogeneity in heat sensitivity and development of thermotolerance of cloned cell lines derived from a single human melanoma xenograft. AB - One uncloned and five cloned cell lines were isolated from a single human melanoma xenograft in passage 39 in athymic mice. Cells from passages 7-12 in vitro were heated at 42.5, 43.5 or 44.5 degrees C and the colony forming ability of the cells was assayed in soft agar. The six cell lines showed individual and characteristic responses to heat treatment. The D0 values of the survival curves were in the ranges 76 +/- 5 to 131 +/- 13 min (42.5 degrees C), 12.5 +/- 1.1 to 22.2 +/- 1.9 min (43.5 degrees C) and 9.4 +/- 1.0 to 15.6 +/- 1.5 min (44.5 degrees C). Cells from all lines developed thermotolerance during protracted treatments at 42.5 degrees C. Thermotolerance was also studied by giving the cells a priming treatment of 43.5 degrees C for 90 min and then, after different fractionation intervals at 37 degrees C, second graded treatments at 43.5 degrees C. Thermotolerance ratio (TTR), i.e. the ratio of the slopes of the survival curves for preheated and single-heated cells, was used as a quantitative measure of the thermotolerance. Thermotolerance developed rapidly for all lines, reached a maximum at 12 or 16 h, and then decayed slowly. Maximum TTR varied among the lines from 4.2 +/- 0.5 to 6.0 +/- 0.9, i.e. within a factor of about 1.4. The survival curves and the TTR-curve for the uncloned line were positioned in the midst of those of the cloned lines. A linear correlation between maximum TTR and heat sensitivity was found for the six lines; maximum TTR decreased with increasing D0 value at 43.5 degrees C. Nevertheless, the lines which were most resistant before thermotolerance developed were also most resistant at maximum thermotolerance. PMID- 3837084 TI - Heat does not induce synthesis of heat shock proteins or thermotolerance in the earliest stage of mouse embryo development. AB - To study a possible role of HSP in the thermal response of mouse embryos, we examined heat survival and HSP synthesis of mouse embryos at the one-cell stage or the blastocyst stage. One-cell embryos were extremely heat sensitive and synthesized HSP at very low levels or not at all. At that developmental stage neither thermotolerance nor HSP synthesis could be induced by heat shock. In contrast, unheated blastocysts synthesized HSP constitutively, were comparatively heat resistant, and both thermotolerance and enhanced rate of HSP synthesis were induced by a non-lethal heat exposure. Our data demonstrate a correlation between HSP synthesis, thermal sensitivity and thermotolerance in this system, and strengthen the suggestion that gene activation of HSP synthesis is closely related to the differentiation process. PMID- 3837085 TI - Melatonin lowers excitability of guinea pig hippocampal neurons in vitro. AB - Action of melatonin (N-acetyl-5-methoxytryptamine; MEL) on guinea pig hippocampal cells (CA3 neurons and dentate granule cells) were studied in vitro using both extra- and intracellular recording. MEL (1-10 mmol/1) had the following effects: Response to repetitive synaptic stimulation was changed drastically: Double shock facilitation (20 ms interval) turned into depression and stimulus trains of a frequency as low as 1 Hz led to a drastic reduction of the response. Membrane potential was hyperpolarized. Duration of action potential was strongly increased. Threshold for the triggering of action potentials was shifted to more positive levels. IPSPs were prolonged and their shunting power enhanced. Repetitive spiking elicited by the application of bicuculline was reversibly abolished. All these effects had in common that cell excitability was lowered. It is concluded that MEL might influence epileptic seizure activity and should be further investigated as potential anticonvulsant. PMID- 3837086 TI - Differential hormonal action of the bag cell neurons on the arterial system of Aplysia. AB - The peptide-secreting bag cell neurons of Aplysia californica activate a long lasting, complex behavior called egg laying. During egg laying some organ systems (reproductive) are more active than others (digestive) suggesting that blood flow to these tissues may change in accordance with their activities during egg laying. To examine this possibility we used a semi-intact preparation of the three major arteries innervated by the abdominal ganglion. We found that electrically stimulated bursts of bag cell activity triggered a long-lasting (greater than 1 h) increase in contractile activity in two arteries, the anterior and gastroesophageal, but did not affect contractions of the third (abdominal) artery. The arterial responses were not affected either in form or duration by denervation of the arteries, suggesting that the increase in contractile activity was mediated by hormonal actions of bag cell transmitters on vasoconstrictor muscles. In intact animals this differential action on the arterial system may cause a long-term decrease in blood flow to relatively inactive tissues (digestive and locomotory organs) while increasing circulation to tissues involved in egg production (ovotestis and oviduct). PMID- 3837087 TI - Pineal melatonin rhythms in the lizard Anolis carolinensis: effects of light and temperature cycles. AB - Pineal and ocular melatonin was assessed, over 24 h periods, in male lizards (Anolis carolinensis) entrained to 24 h light-dark (LD) cycles and a constant 32 degrees C, and in lizards entrained to both 24 h LD cycles and 24 h temperature cycles (32 degrees C/20 degrees C). At a constant temperature, the duration of the photoperiod has a profound effect on the duration, amplitude, and phase of the pineal melatonin rhythm (Fig. 1). The pineal melatonin rhythm under cyclic temperature peaks during the cool (20 degrees C) phase of the cycle regardless of whether or not the cool phase occurs during the light or dark phase of a LD 12:12 cycle (Fig. 3). Under a temperature cycle and constant dim illumination, a pineal melatonin rhythm is observed which peaks during the cool phase of the temperature cycle, but the amplitude of the rhythm is depressed relative to that observed under LD (Fig. 2). Illumination up to 2 h in duration does not suppress the nocturnal melatonin peak in the Anolis pineal (Fig. 4). No melatonin rhythm was observed in the eyes of Anolis under either 24 h LD cycles and a constant temperature (Fig. 1), or under simultaneous light and temperature cycles (Fig. 3). Ocular melatonin content was, in all cases, either very low or non detectable. PMID- 3837088 TI - Activity patterns of cochlear ganglion neurones in the starling. AB - Spontaneous activity and responses to simple tonal stimuli were studied in cochlear ganglion neurones of the starling. Both regular and irregular spontaneous activity were recorded. Non-auditory cells have their origin in the macula lagenae. Mean spontaneous rate for auditory cells (all irregularly spiking) was 45 spikes s-1. In half the units having characteristic frequencies (CFs) less than 1.5 kHz, time-interval histograms (TIHs) of spontaneous activity showed regularly-spaced peaks or 'preferred' intervals. The spacing of the peak intervals was, on average, 15% greater than the CF-period interval of the respective units. In TIH of lower-frequency cells without preferred intervals, the modal interval was also on average about 15% longer than the CF-period interval. Apparently, the resting oscillation frequency of these cells lies below their CF. Tuning curves (TCs) of neurones to short tone bursts show no systematic asymmetry as in mammals. Below CF 1 kHz, the low-frequency flanks of the TCs are, on average, steeper than the high-frequency flanks. Above CF 1 kHz, the reverse is true. The cochlear ganglion and nerve are tonotopically organized. Low frequency fibres arise apically in the papilla basilaris and are found near non auditory (lagenar) fibres. Discharge rates to short tones were monotonically related to sound pressure level. Saturation rates often exceeded 300 spikes s-1. 'On-off' responses and primary suppression of spontaneous activity were observed. A direct comparison of spontaneous activity and tuning-curve symmetry revealed that, apart from quantitative differences, fundamental qualitative differences exist between starling and guinea-pig primary afferents. PMID- 3837089 TI - Spectral sensitivity of the African cichlid fish, Haplochromis burtoni. AB - Spectral sensitivity of the cichlid fish Haplochromis burtoni was measured under both scotopic and photopic conditions using a two-choice, food reward, operant conditioning paradigm. The highest absolute sensitivity (scotopic) is one quantum for every 5 to 50 rods measured at 475 nm (equivalent to a corneal irradiance of 3.8 x 10(6) Q s-1 cm-2). A P500(1) photopigment apparently mediates spectral sensitivity over most of the visible spectrum; microspectrophotometric studies of rods had previously shown them to contain this photopigment. However, the scotopic behavioral action spectrum shows a sensitivity to short wavelength light higher than is consistent with a P500(1) photopigment alone mediating the scotopic visual process. Determinations made under photopic conditions reveal a behavioral action spectrum broader than that found under scotopic conditions and consistent with mediation by interaction of the three known cone types in an opponent processing manner. The calculated photopic threshold value of approximately 10(4) Q s-1 (receptor)-1 is in agreement with results from other species and corresponds to a corneal irradiance of about 7 x 10(10) Q s-1 cm-2. PMID- 3837090 TI - Organization of inputs to motoneurons during fictive respiration in the isolated lamprey brain. AB - The intracellular activity of motoneurons during 'fictive' respiration in the isolated lamprey brain was investigated. In association with each respiratory cycle three distinct PSP phases were observed: an early, low amplitude EPSP phase; a large, brief EPSP phase that drove action potentials; and a subsequent IPSP phase. Selective midline and trigeminal lesions, and trigeminal stimulation, demonstrated that the large excitatory and inhibitory phases were generated by a previously described pair of central pattern generators located in the trigeminal region of the medulla. Lesion studies further showed that the low amplitude excitatory input could be produced independently of the trigeminal pacemakers, near the region of the medulla that contains the respiratory motoneurons. In addition to 'normal' fictive respiration, the isolated brain was found to produce several variations of the respiratory pattern. These motor programs, 'coughs', 'arousal breathing', and 'weak breathing', were distinguished from the normal respiratory pattern by their much longer burst durations, distinctive underlying synaptic input, and separate coordinating mechanism. Activity similar to these motor programs could be independently produced by the caudal medulla after both trigeminal central pattern generators had been removed. Lesion studies, and the observation that respiratory-related neural activity ceased in the trigeminal region during the production of these long-duration programs, suggest that the caudal medulla also contains paired central pattern generators involved in lamprey respiration. PMID- 3837091 TI - Respiratory bursts at the midline of the rostral medulla of the lamprey. AB - The contribution of a rostral crossed pathway to the coordination of fictive breathing was tested in isolated brains of adult lampreys, Ichthyomyzon unicuspis. Periodic bursts of small spikes were recorded at the midline at the rostral level of the V motor nuclei. These occurred prior to bursts by respiratory motoneurons in the IX-X cranial nerve roots. The bursts at the midline could be generated in the rostral half of the medulla, since they continued after isolation of the isthmic-trigeminal region by transections. Stimulation at the rostral midline excited respiratory motoneurons monosynaptically and could entrain or reset the respiratory rhythm. Sections of the midline sparing the rostral site still permitted bilateral synchronization of respiratory bursts. Alternatively, sections of the rostral midline still allowed coordination of respiratory bursts through crossed caudal pathways, although abnormal timing patterns were observed. It is concluded that the motor pattern for respiration is partly generated and coordinated in the rostral half of the medulla of the lamprey and is transmitted to respiratory motoneurons through descending pathways. PMID- 3837092 TI - The visual pigment sensitivity hypothesis: further evidence from fishes of varying habitats. AB - Visual pigments were extracted from the retinas of 8 species of marine teleosts and 4 species of elasmobranchs and a comparison was made of the pigment properties from these fishes, some inhabiting surface waters, others from the mesopelagic zone, and a few migrating vertically between these two environments. An association was found between the spectral position of the absorbance curve and the habitat depth or habitat behavior, with the blue-shifted chrysopsins being the pigments of the twilight zone fishes and the rhodopsins with fishes living near the surface. The retina of the swell shark (Cephaloscyllium ventriosum) yielded extracts with two photopigments; one, a rhodopsin at 498 nm; the second, a chrysopsin at 478 nm. This fish has been reported to practice seasonal vertical migrations between the surface and the mesopelagic waters. In addition to the spectral absorbance, several properties of these visual pigments were examined, including the meta-III product of photic bleaching, regeneration with added 11-cis and 9-cis retinals, and the chromophoric photosensitivity. The chrysopsin properties were found to be fundamentally similar to those of typical vertebrate rhodopsins. Correlating the spectral data with the habitat and habitat behavior of our fishes gives us confidence in the idea that the scotopic pigments have evolved as adaptations to those aspects of their color environment that are critical to the survival of the species. PMID- 3837093 TI - A study of pre- and postganglionic fibres in the intestinal nerve (Remark's nerve) of the chicken. AB - The mean peak CV's of two electrophysiologically defined groups of fibres in the intestinal nerve of the chicken have been determined. One group of fibres is constituted by the processes of enteric cholinergic neurones which project along the side branches of the intestinal nerve and synapse within the nerve trunk. These preganglionic fibres have a mean peak CV (at 40 degrees C) of 0.31 m x s-1. The other group is made up of fibres of postganglionic neurones which project orally along the nerve trunk. The results suggest that some postganglionic neurones project only as far as the next ganglion whilst others project beyond the next two ganglia for distances greater than 5 mm. The postganglionic fibres have a mean peak CV (at 40 degrees C) of 0.71 m X s-1. These figures demonstrate that both pre- and postganglionic fibres are unmyelinated. The temperature coefficient (Q10) for the CV of unmyelinated fibres in the intestinal nerve was 1.57. PMID- 3837094 TI - Visual scanning behaviour in honeybees. AB - Freely flying bees were rewarded with sugar solution on a variety of black-and white shapes as well as on coloured gratings in various training situations. In subsequent dual-choice tests, the bees' discrimination between the various shapes was measured. In addition, the bees were video-filmed while flying in front of the shapes. The scanning patterns thus obtained were then quantified in order to characterize scanning behaviour and its relationship to the geometrical parameters of the scanned shapes, investigate whether scanning plays a role in pattern discrimination and examine the influence of training on the characteristics of scanning. The scanning patterns clearly mirror the contours of the scanned shape in all cases, i.e. the bees fly along the contours contained in the shape. This behaviour does not depend on whether the scanned shape is one that was previously rewarded, or one that is completely novel to the bees. Comparison of the results of quantifying the scanning patterns with the results of dual-choice tests reveals that scanning behaviour is independent of discrimination performance. On the average, horizontal scanning directions occur more often than vertical directions. Variations of the training situation produce measurable differences in scanning behavior. However, except in the case of vertical scanning on a vertical grating, these differences are quite small, indicating that following contours is a largely stereotyped behaviour. Horizontal gratings are very well discriminated from vertical ones even if they offer contrast to only one receptor type, i.e. blue or green, demonstrating that the direction of contours is visible to the pattern recognition system even under these conditions. However, vertical and horizontal coloured gratings offering only blue-contrast do not elicit contour-following, whereas gratings offering only green-contrast do. Thus, the bees' scanning behaviour is colour-blind and most probably governed by the green receptors. We suggest that contour-following is the by-product of a behavioural mode which serves to prevent retinal image movement during flight in front of a contoured visual pattern. PMID- 3837095 TI - The contribution of different colour receptors to a motor output in the fly. AB - A light flash given to the eye of Calliphora leads to a movement of the legs (light induced leg reflex) which most likely normally initiates flight of the animal. This reflex has a short latency (12 to 30 ms, depending upon light intensity) and is quite reproducible without habituation. The spectral sensitivity of the reflex shows that receptors R1-6 most likely govern the input to the reflex in dark adaptation, a contribution of receptors R7 can be demonstrated with selective chromatic adaptation. PMID- 3837096 TI - Pigeon homing: does initial orientation include a 'preferred compass direction'? AB - To find out whether the initial orientation of pigeons is affected by a spontaneous directional tendency, as postulated by Wallraff's (1974, 1978, 1982) hypothesis, experienced birds were released at test sites distributed symmetrically around their loft. The length of the mean vectors of the single releases, the deviations from the home direction, the homeward components as well as the homing speed did not show a correlation with the geographic position of the home direction. Summarizing four sites each on 21 experimental circles, we frequently obtained significant compass vectors, but they varied in direction between 115 degrees ESE and 351 degrees N, depending on what sites had been used, and did not indicate a uniform trend. A 'preferred compass direction' as an integrated part of pigeon navigation, being the reason for the frequently observed deviations from the home direction, could not be confirmed. The problematic nature of simply pooling the data of several symmetrically distributed test sites and calling any resulting significant vector a 'preferred compass direction' is discussed, together with other possible reasons for asymmetrical distributions of release site biases. PMID- 3837097 TI - Properties of action potentials carried by divalent cations in identified leech neurons. AB - Properties of divalent cation potentials carried by either Sr2+ or Ca2+ ions in Na+-free, TEA-Ringer solution were characterized in identified neurons of two species of leeches (Macrobdella and Haementeria). In Macrobdella, the overshoot of the potentials varied logarithmically with [Sr2+]0 (28.5 mV per 10-fold change). The overshoot, Vmax, and duration of the potentials increased with increasing divalent cation concentration and saturated at about 20 to 30 mM [Sr2+]0. The Vmax, amplitude, and duration of the potentials were reversibly blocked by Co2+ and Mn2+. The block by Mn2+ could be well-fitted by a reverse Langmuir-curve with an apparent KI of 100 micromolar. The local anesthetic procaine also reversibly inhibited the Vmax and duration of the potentials. The inhibition was greater at alkaline pH suggesting that procaine blocks the calcium channel from inside the membrane. The identified leech neurons examined in Macrobdella varied considerably in their ability to sustain somatic divalent cation potentials. Stimulation of T cells and most motoneurons produced no or only weak potentials, whereas stimulation of Retzius, N, Nut, and AP cells evoked overshooting potentials of several seconds' duration. Stimulation of the ALG cell of Haementeria in normal Ringer solution evoked a slowly-rising, purely Ca2+ dependent potential of approximately 100 ms duration. This response was TTX resistant, unaffected by complete removal of Na+ from the Ringer solution, and abolished by 1 mM Mn2+. The overshoot varied logarithmically with a slope of 28 mV/decade change in [Ca2+]0. PMID- 3837099 TI - Temporal resolution of colour vision in the honeybee. AB - The temporal resolution of colour vision was measured in freely-flying honeybees by testing the performance of trained bees in discriminating between two stimuli, one of which presented a steady, homogeneous mixture of two colours, while the other offered a heterochromatic flicker between the two colours at various temporal frequencies. Pairwise combinations of the colours uv, blue and green were used, corresponding to the three receptor classes in the bee retina. For each colour combination, we determined a cutoff frequency beyond which discrimination no longer exists. For a given colour combination, the cutoff frequency depends upon the ratio of the intensities of the component colours, and is maximum at a particular ratio. The cutoff frequency at the optimum intensity ratio is approximately 100 Hz for each of the 3 colour combinations blue-green, green-uv and uv-blue, implying that colour computation requires ca. 10 ms. From the optimum intensity-ratios for the three colour combinations, we infer that the relative sensitivities of the green, blue and uv channels are approximately 1:1.3:24. PMID- 3837098 TI - Behavioral study of chemoreception in the sea star Marthasterias glacialis: structure-activity relationships of lactic acid, amino acids, and acetylcholine. AB - Behavioral responses of Marthasterias glacialis to low molecular compounds were studied under laboratory conditions. Feeding postures, stomach eversions and locomotion of initially inactive animals can be released with very dilute solutions of lactic acid, neutral 2 and 3 carbon amino acids, L isomers of 4 to 6 carbon neutral amino acids, L-arginine, acetylcholine iodide, and several of their analogues. Hunger was induced by temporary withdrawal of food. Responsiveness to feeding stimuli was controlled with L-cysteine and L-leucine. The lowest behavioral thresholds for the most effective feeding stimuli were 3 X 10(-11) mol/l for both enantiomers of lactic acid, 10(-8) mol/l for L-proline and both enantiomers of cysteine and 10(-7) mol/l for acetylcholine iodide and some of the effective neutral amino acids. The behavioral threshold values for chemical stimuli differed by a factor between 30 and 100 in different sea stars. The test concentration was 3 X 10(-7) mol/l, the level at which L-cysteine elicited a complete feeding response from all the animals. Structure-activity comparison of substances less effective than the control stimulus was thus possible. The behavioral threshold of fully effective substances was determined later. The independence of receptor mechanisms for different substances can be inferred as: L-cysteine controlled responsiveness is not always accompanied by responsiveness to neutral amino acids. Autotomized marthasterias arms crawled after stimulation with lactic acid, cysteine, and acetylcholine iodide but did not respond to the feeding stimuli betaine and L-proline. An animal became inactive if electric shocks were paired with L-proline or L-cysteine emanating from an 'electric' food model.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837100 TI - A comparative study of the physiological properties of the inner ear in Doppler shift compensating bats (Rhinolophus rouxi and Pteronotus parnellii). AB - Cochlear microphonic (CM) and evoked neural (N-1) potentials were studied in two species of Doppler shift compensating bats with the aid of electrodes chronically implanted in the scala tympani. Potentials were recorded from animals fully recovered from the effects of anesthesia and surgery. In Pteronotus p. parnellii and Rhinolophus rouxi the CM amplitude showed a narrow band, high amplitude peak at a frequency about 200 Hz above the resting frequency of each species. In Pteronotus the peak was 25-35 dB higher in amplitude than the general CM level below or above the frequency of the amplitude peak. In Rhinolophus the amplitude peak was only a few dB above the general CM level but it was prominent because of a sharp null in a narrow band of frequencies just below the peak. The amplitude peak and the null were markedly affected by body temperature and anesthesia. In Pteronotus high amplitude CM potentials were produced by resonance, and stimulated cochlear emissions were prominent in Pteronotus but they were not observed in Rhinolophus. In Pteronotus the resonance was indicated by a CM afterpotential that occurred after brief tone pulses. The resonance was not affected by the addition of a terminal FM to the stimulus and when the ear was stimulated with broadband noise it resulted in a continual state of resonance. Rapid, 180 degree phase shifts in the CM were observed when the stimulus frequency swept through the frequency of the CM amplitude peak in Pteronotus and the frequency of the CM null in Rhinolophus. These data indicate marked differences in the physiological properties of the cochlea and in the mechanisms responsible for sharp tuning in these two species of bats. PMID- 3837101 TI - The contribution of the olfactory and tactile modalities to the nipple-search behaviour of newborn rabbits. AB - By performing uni- and bilateral olfactory bulb lesions and uni- and bilateral transsections of the infraorbital branches of the trigeminal nerves in 2-day-old rabbits, it could be shown that: Both the olfactory and tactile modalities are essential for the successful performance of nipple-search behaviour. While bilateral bulbectomy completely eliminates searching, and hence suckling, unilateral bulbectomy has relatively little effect. Bilateral denervation of the muzzle does not eliminate searching, but pups are unable to suckle as they fail to show the mouth-opening component necessary for nipple attachment. In contrast to unilateral bulbectomy, unilateral denervation of the muzzle results in a lateralization of head movements during searching, nipple grasping and nipple release. PMID- 3837102 TI - Tactile localisation: the function of active antennal movements in the crayfish Cherax destructor. AB - Video recordings and single frame analysis were used to study the function of the second antennae of crayfish (Cherax destructor) as a sensory system in freely behaving animals. Walking crayfish move their antennae back and forth through horizontal angles of 100 degrees and more, relative to the body long axis. At rest, animals tend to hold their antennae at angular positions between 20 and 50 degrees. Movements of the two antennae are largely independent of each other. Before and during a turn of the body the ipsilateral antenna is moved into the direction of the turn. Solid objects are explored by repeatedly moving the antennae towards and across them. Both seeing and blinded crayfish can locate stationary objects following antennal contact. On antennal contact with a small novel object, a moving animal withdraws its antenna and attacks the object. When the antenna of a blinded crayfish is lightly touched with a brush the animal turns and attacks the point of stimulation. The direction taken and the distance covered during an attack can be correlated with: the angle at which the antenna is held at the moment of contact and the distance along the antennal flagellum at which the stimulus is applied. From behavioural evidence we conclude that crayfish use information about the angular position of their antennae and about the position of stimulated mechanoreceptors along the antennal flagellum to locate objects in their environment. We suggest ways in which an active tactile system-like the crayfish's antennae--could supply animals with information about the three-dimensional layout of their environment. PMID- 3837103 TI - Mechanics of the transduction of sound in the tympanal organ of adults and larvae of locusts. AB - The mechanical transmission of sound in the tympanal organ of adults and 5th instar larvae of Locusta migratoria and Schistocerca gregaria has been investigated by means of stroboscopic measurements within a frequency range from 1-20 kHz. Frequency dependent spatial distributions of amplitudes and phases of oscillation on the tympanal membrane and the Muller's organ could be demonstrated. Cuticular structures on the membrane may act as a lever arm (e.g. elevated process) and cause a transformation of the (unidimensional) membrane motion into components of displacements in the Muller's organ perpendicular, as well as even parallel, to the membrane. Sites of maximum relative displacements at distinct frequencies are found to be correlated to the course of the dendrites of the acoustic receptor cells. Differences in morphology of the tympanal organ between the two species as well as between adults and larvae always correspond to differences in the mechanical properties (resonances etc.). Consequently, differences or changes in the neurophysiological response characteristics of the different receptor cells have been found. Based upon these findings a correlation between the anatomical and physiological classification of the receptor cell groups is presented. PMID- 3837104 TI - Spike synchronization of tympanic receptor fibres in a grasshopper (Chorthippus biguttulus L., Acrididae). A possible mechanism for detection of short gaps in model songs. AB - In recordings from single tympanic receptor fibres in C. biguttulus, the response to synthesized sounds (rectangularly modulated white noise) interrupted by very brief (a few milliseconds) gaps was examined. In behavioral tests, females of the species respond very differently to such 'model syllables' at moderate intensities, depending on the gap width. If the gaps (in a moderate-intensity syllable) are larger than 2 ms, the stimulus fails to elicit a response, whereas stimuli with gaps smaller than 1 ms are as effective as uninterrupted syllables (D. von Helversen 1972; O. von Helversen 1979). Neither the mean spike count nor the interspike-interval distribution of the single receptor response contains the information sufficient to distinguish uninterrupted syllables from syllables with gaps. On the other hand, examination of the temporal distribution of the spikes reveals that gaps (or the pulse onsets following the gaps) cause spike synchronization. An index of synchronization (IS) was defined as a measure of this gap-induced effect. Analysis of the receptor responses based on IS revealed differences that correspond quantitatively to the abrupt abolition of the behavioral response at a gap-width between 1 and 2 ms. From the hypothesis that such brief gaps are detected by the nervous system by way of spike synchronization in the tympanic nerve, one can predict certain features of the behavioral response to high-intensity stimuli. The gap-induced spike synchronization was more pronounced at higher temperatures. This effect was demonstrated in both summated recordings from the tympanic nerve and single fibre recordings. Experiments with primary auditory fibres of Locusta migratoria showed that the receptors in this species respond very similarly to the same stimuli. That is, the receptors of C. biguttulus are not specially adapted for detecting very brief gaps. Synchronization of the spikes in parallel receptor fibres of the tympanal nerve is probably a general feature of acridids; we infer that in C. biguttulus this gap-induced synchronized activity is detected by special processing in higher auditory centres. PMID- 3837105 TI - Modulation of activity in starling cochlear ganglion units by middle-ear muscle contractions, perilymph movements and lagena stimuli. AB - In the present study three groups of cochlear ganglion neurons were detected which differed in respect to their tone-evoked and spontaneous activity: auditory units which showed an irregular spontaneous discharge, non-auditory neurones with regular activity and such with an irregular spontaneous discharge pattern. Electrically-elicited contractions of the middle-ear muscle influenced the tone evoked and/or the spontaneous activity of the auditory and the non-auditory neurones with irregular spontaneous discharge but not, however, the regularly firing units. Similar results were obtained with imposed perilymph movements in the cochlea (evoked via the vestibular system. Fractions of all three groups of cochlear ganglion neurones were responsive to direct deformations of the membraneous lagena. Several (auditory and non-auditory) units with irregular discharge were excited during a basilar membrane displacement towards scala vestibuli whereas a basilar membrane motion towards scala tympani resulted in a decrease of the discharge rate. A few units showed a different reaction. The results provide evidence that the neurones with periodic spontaneous discharge innervate the lagena and that this sense organ has no auditory significance in birds. The peripheral origin of the 'non-auditory' neurones with irregular spontaneous activity remains undecided and might be the macula lagenae or the apical portion of the basilar papilla. PMID- 3837106 TI - Mobility and electric charge of screening pigment granules in the superposition eye of Ephestia kuehniella Z. AB - The mobility and the electric charge of screening pigment granules of the mealmoth superposition eye were determined electrophoretically in buffer solutions. In potassium phosphate buffer the mobility of the negatively charged granules is linearly dependent on the pH in the range from 4.8 to 7.7, and in veronal buffer from pH = 2.3 to pH = 7.5. At pH = 6.6 the values of the effective charge per granule vary between 9.4 X 10(-17) C and 2.0 X 10(-16) C, those of the real charge between 2.4 X 10(-14) C and 5.6 X 10(-14) C. For equal electric fields, the mobility of the granules decreases with increasing ionic strength mu, and it remains the same for mu greater than 0.075 mol/l. PMID- 3837107 TI - An HRP-study of the frequency-place map of the horseshoe bat cochlea: morphological correlates of the sharp tuning to a narrow frequency band. AB - The frequency-place map of the horseshoe bat cochlea was studied with the horseradish peroxidase (HRP) technique involving focal injections into various, physiologically defined regions of cochlear nucleus (CN). The locations of labeled spiral ganglion cells and their termination sites on inner hair cells of the organ of Corti from injections into CN-regions responsive to different frequencies were analyzed in three dimensional reconstructions of the cochlea. Horseshoe bats from different geographical populations were investigated. They emit orientation cells with constant frequency (CF) components around 77 kHz (Rhinolophus rouxi from Ceylon) and 84 kHz (Rhinolophus rouxi from India) and their auditory systems are sharply tuned to the respective CF-components. The HRP map shows that in both populations: the frequency range around the CF-component of the echolocation signal is processed in the second half-turn of the cochlea, where basilar membrane (BM) is not thickened, secondary spiral lamina (LSS) is still present and innervation density is maximal; frequencies more than 5 kHz above the CF-component are processed in the first half-turn, where the thickened BM is accompanied by LSS and innervation density is low; frequencies below the spectral content of the orientation call are represented in apical turns showing no morphological specializations. The data demonstrate that the cochlea of horseshoe bats is normalized to the frequency of the individual specific CF component of the echolocation call. The HRP-map can account for the overrepresentation of neurons sharply tuned to the CF-signal found in the central auditory system. A comparison of the HRP-map with a map derived with the 'swollen nuclei technique' following loud sound exposure (Bruns 1976b) reveals that the latter is shifted towards cochlear base by about 4 mm. This discrepancy warrants a new interpretation of the functional role of specialized morphological structures of the cochlea within the mechanisms giving rise to the exceptionally high frequency selectivity of the auditory system. PMID- 3837108 TI - The cochlear frequency map of the mustache bat, Pteronotus parnellii. AB - The frequency-place map of the cochlea of mustache bats was constructed by the analysis of HRP-transport patterns in spiral ganglion cells following iontophoretic tracer injections into cochlear nucleus regions responsive to different frequencies. The cochlea consists of 5 half turns (total length 14.3 mm) and the representation of certain frequency bands can be assigned to specific cochlear regions: The broad high frequency range between 70 and 111 kHz is represented in the most basal half turn within only 3.2 mm. This region is terminated apically by a distinct narrowing of the scala vestibuli that coincides with a pronounced increase in basilar membrane (BM) thickness. The narrow intermediate frequency range between 54 and 70 kHz is expanded onto 50% of cochlear length between 4.0 and 11.1 mm distance from apex. The frequency range around 60 kHz, where the tuning characteristics of the auditory system are exceptionally sharp, is located in the center of this expanded BM-region in the second half turn within a maximum of innervation density. These data can account for the vast overrepresentation of neurons sharply tuned to about 60 kHz at central stations of the auditory pathway. In the cochlear region just basal to the innervation maximum, where label from injections at 66 and 70 kHz was found, a number of morphological specializations coincide: the BM is maximally thickened, innervation density is low, the spiral ligament is locally enlarged, and the 'thick lining', a dense covering of the scala tympani throughout the basal halfturn, suddenly disappears. Low frequencies up to 54 kHz are represented within the apical half turns over a 4 mm span of the basilar membrane. The data are compared to the cochlea of horseshoe bats and the possible functional role of the morphological discontinuities for sharp tuning and the generation of otoacoustic emissions is discussed. PMID- 3837109 TI - Mechanical sensitivity of the facial nerve fibers innervating the anterior palate of the puffer, Fugu pardalis, and their central projection to the primary taste center. AB - Mechanical and chemical sensitivity of the palatine nerve, ramus palatinus facialis, innervating the anterior palate of the puffer, Fugu pardalis, and their central projection to the primary taste center were investigated. Application of horseradish peroxidase (HRP) to the central cut end of the palatine nerve resulted in retrogradely labeled neurons in the geniculate ganglion but no such neurons in the trigeminal ganglion, suggesting that the palatine nerve is represented only by the facial component. Tracing of the facial sensory root in serial histological sections of the brain stem suggested that the facial sensory nerve fibers project only to the visceral sensory column of the medulla. Peripheral recordings from the palatine nerve bundle showed that both mechanical and chemical stimuli caused marked responses. Mechanosensitive fibers were rather uniformly distributed in the nerve bundle. Intra-cranial recordings from the trigeminal and facial nerves at their respective roots revealed that tactile information produced in the anterior palate was carried by the facial nerve fibers. Elimination of the sea water current over the receptive field also caused a marked response in the palatine nerve bundle or facial nerve root while this did not cause any detectable responses in the trigeminal nerve root. Single fiber analyses of the mechanical responsiveness of the palatine nerve were performed by recording unit responses of 106 single fibers to mechanical stimuli (water flow), HCl (0.005 M), uridine-5'-monophosphate (UMP, 0.001 M), proline (0.01 M), CaCl2 (0.5 M), and NaSCN (0.5 M). All these fibers responded well to one of the above stimuli; however, most taste fibers did not respond well to the inorganic salts. The palatine fibers (n = 36), identified as mechanosensitive, never responded to any of the chemical stimuli, whereas chemosensitive fibers (n = 70) did not respond to mechanical stimuli at all. The chemosensitive units showed a high specificity to the above stimuli: they tended to respond selectively to hydrochloric acid, UMP, or proline. The responses of the mechanosensitive units consisted of phasic and tonic impulse trains and the sensitivity of the units varied considerably. The results reveal that the facial nerve fibers innervating the anterior palate of the puffer contain two kinds of afferent fibers, chemosensory and mechanosensory respectively, and suggest that the convergence of the tactile and gustatory information first occurs in the neurons of the primary gustatory center in the medulla. PMID- 3837110 TI - Tongue-muscle-controlling motoneurons in the Japanese toad: topography, morphology and neuronal pathways from the 'snapping-evoking area' in the optic tectum. AB - As a step to clarifying the neural bases for the visually-guided prey-catching behavior in the toad, special attention was paid to the flipping movement of the tongue. Tongue-muscle-controlling motoneurons were identified antidromically, and their topographical distribution within the hypoglossal nucleus, the morphology, and the neuronal pathways from the optic tectum including the 'snapping-evoking area' (see below) to these motoneurons were investigated in paralyzed Japanese toads using intracellular recording techniques. The morphology of motoneurons innervating the tongue-protracting or retracting muscles (PMNs or RMNs respectively) was examined by means of intracellular-staining (using HRP/cobaltic lysine) and retrograde-labeling (using cobaltic lysine) methods. Both PMNs and RMNs showed an extensive spread of the branching trees of dendrites; 4 dendritic fields were distinguished: lateral/ventrolateral, dorsal/dorsolateral, medial, and in some motoneurons, contralateral dendritic fields, although there was a tendency for the dorsal/dorsolateral dendritic field to be less extensive in the PMNs than in the RMNs. The axons of both PMNs and RMNs arose from thick dendrites, ran in a ventral direction without any axon-collaterals branching off, and then entered the hypoglossal nerve. The PMNs and RMNs were distributed topographically within the hypoglossal nucleus; the RMNs were located rostrally within the nucleus, whereas the PMNs were located more caudally within it. In about 3/4 of the RMNs tested, depolarizing potentials [presumably the excitatory postsynaptic potentials (EPSPs)], on which action potentials were often superimposed, were evoked by electrical stimuli applied to the nerve branch innervating the tongue protractor. These EPSPs were temporally facilitated when the electrical stimuli were applied at short intervals (10 ms). Both PMNs and RMNs showed hyperpolarizing potentials (IPSPs) in response to single electrical stimuli of various intensities (10-200 microA) applied to the 'snapping-evoking area' (lateral/ventrolateral part of the optic tectum) on either side. These IPSPs were facilitated after repetitive electrical stimulations at short intervals (10 ms) and of weaker intensities (down to 10 microA); i.e., a temporal facilitation of the IPSPs was observed. On the other hand, large and long-lasting EPSPs which prevailed over the underlying IPSPs were evoked after repetitive electrical stimulations (a few pulses or more) at short intervals (10 ms) and of stronger intensities (generally 90 microA or more); thus, a temporal facilitation of the EPSPs was also observed.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3837111 TI - A proposed neural pathway for vocalization in South African clawed frogs, Xenopus laevis. AB - Vocalizations of South African clawed frogs are produced by contractions of laryngeal muscles innervated by motor neurons of the caudal medulla (within cranial nerve nucleus IX-X). We have traced afferents to laryngeal motor neurons in male and female frogs using retrograde axonal transport of horseradish peroxidase conjugated to wheat germ agglutinin (HRP-WGA). After iontophoretic injection of HRP-WGA into n. IX-X, retrogradely labelled neurons were seen in the contralateral n. IX-X, in rhombencephalic reticular nuclei, and in the pre trigeminal nucleus of the dorsal tegmental area (DTAM) of both males and females. PMID- 3837112 TI - Species specificity and temperature dependency of temporal processing by the auditory midbrain of two species of treefrogs. AB - The mating (advertisement) calls of two sibling species of gray treefrogs, Hyla versicolor and Hyla chrysoscelis, are spectrally identical but differ in trill rate; being higher for H. chrysoscelis. Single-unit recordings were made from the torus semicircularis of both species to investigate the neural mechanisms by which this species-specific temporal feature is analyzed. Using sinusoidally amplitude-modulated (AM) white noise as a stimulus, the temporal selectivity of these midbrain auditory neurons could be described by five response categories: 'AM nonselective' (34%); 'AM high-pass' (7%); 'AM low-pass' (6%); 'AM band suppression' (12%); 'AM tuned' (40%). The distributions of temporal tuning values (i.e., modulation rate at which each AM-tuned unit responds maximally) are broad; in both species, neurons were found which were tuned to modulation rates greater than those found in their advertisement calls. Nevertheless, the temporal tuning values for H. versicolor (median = 25 Hz) were significantly lower than those for H. chrysoscelis (median = 32.5 Hz). The temporal selectivities of AM band suppression neurons were found to be temperature dependent. The modulation rate at which a response minimum was observed shifted to higher values as the temperature was elevated. These results extend our earlier findings of temperature-dependent temporal selectivity in the gray treefrog. The selectivity of band-suppression and AM-tuned neurons to various rates of amplitude modulation was largely, but not completely, independent of whether sinusoidal or natural forms of AM were used. PMID- 3837113 TI - Visual learning in walking blowflies, Lucilia cuprina. AB - The Australian sheep blowflies Lucilia cuprina were trained by presenting droplets of sugar solution on a light spot of blue (460 nm wavelength) or green (520 nm wavelength). During the test, the searching behaviour was elicited by sugar stimulation. Then, the flies were allowed to walk in the arena where four coloured spots (two blue and two green) with light intensities similar to the training light were exhibited. Visits at these coloured spots were recorded. The flies visited preferably the light spot of the colour to which they had been trained. Next, the flies were trained to a light spot of blue or green displayed in various intensities, and later tested to discriminate between these two colours displayed in fixed intensities. The flies preferred the trained colour over the untrained one irrespective of the intensity used during training. It was only at the lowest intensity that they showed random orientation. These results suggest that the flies can learn to visit a coloured spot, and that they can discriminate between colours on the basis of wavelength rather than intensity. Training caused the flies not only to increase the probability of visiting the trained colour, but also to extend the proboscis and to elicit a characteristic searching behaviour once they had reached the coloured spot. PMID- 3837114 TI - Ontogenetic development of neural responses in the olfactory bulb of laboratory mice. AB - In laboratory mice (strain NMRI) the ontogenetic development of single unit activity in the olfactory bulb was investigated. From postnatal day 10 on, spontaneously active neurons were recorded with glass-microelectrodes, and their responses to olfactory stimuli were tested (butyric acid, geraniol, grass- and nest-odour). From day 10 to 13 only very few neurons were recordable (and most of these elements were too weak and were lost before being stimulated). At day 14 the number of recordable neurons increased rapidly, and by day 15 spontaneously active neurons reached adult level in terms of incidence and electric properties. There were 3 types of neurons: respiration synchronous elements; bursting neurons not correlated with respiration; continuously, but randomly, firing elements (about 60% of all neurons). Reactions to odour stimuli (excitation, ca. 50%; inhibition, ca. 34%; complex reactions, ca. 12%; change in activity pattern, ca. 4%) occurred as soon as the cells were stable enough for testing. The reaction patterns showed no age specific differences; the duration of the responses varied from 100 ms to 100 s. In younger animals (P11-P14) the percentage of responses was slightly smaller (47%) than in the older ones (P30-P50; 64% response to olfactory stimulation). For some of the odours tested the proportion of responding cells differed depending on age (for instance grass odour evoked a response in 40% of the cells in young ones, but in 65% in adults). PMID- 3837115 TI - Responses to pure tones and linear FM components of the CF-FM biosonar signal by single units in the inferior colliculus of the mustached bat. AB - The responses of 682 single-units in the inferior colliculus (IC) of 13 mustached bats (Pteronotus parnellii parnellii) were measured using pure tones (CF), frequency modulations (FM) and pairs of CF-FM signals mimicking the species' biosonar signal, which are stimuli known to be essential to the responses of CF/CF and FM-FM facilitation neurons in auditory cortex. Units were arbitrarily classified into 'reference frequency' (RF), 'FM2' and 'Non-echolocation' (NE) categories according to the relationship of their best frequencies (BF) to the biosonar signal frequencies. RF units have high Q10dB values and are tuned to the reference frequency of each bat, which ranged between 60.73 and 62.73 kHz. FM2 units had BF's between 50 and 60 kHz, while NE units had BF's outside the ranges of the RF and FM2 classes. PST histograms of the responses revealed discharge patterns such as 'onset', 'onset-bursting' (most common), 'on-off', 'tonic on','pauser', and 'chopper'. Changes in discharge patterns usually resulted from changes in the frequency and/or intensity of the stimuli, most often involving a change from onset-bursting to on-off. Different patterns were also elicited by CF and FM stimuli. Frequency characteristics and thresholds to CF and FM stimuli were measured. RF neurons were very sharply tuned with Q10dB's ranging from 50 360. Most (92%) also responded to FM2 stimuli, but 78% were significantly more sensitive (greater than 5 dB) to CF stimuli, and only 3% had significantly lower thresholds to FM2. The best initial frequency for FM2 sweeps in RF units was 65.35 +/- 2.138 kHz (n = 118), well above the natural frequency of the 2nd harmonic. FM2 and NE units were indistinguishable from each other, but were quite different from RF units: 41% of these two classes had lower thresholds to CF, 49% were about equally sensitive, and 10% had lower thresholds to FM. For FM2 units, mean best initial frequency for FM was 60.94 kHz +/- 3.162 kHz (n = 114), which is closely matched to the 2nd harmonic in the biosonar signal. Very few units (5) responded only to FM signals, i.e., were FM-specialized. The characteristics of spike-count functions were determined in 587 units. The vast majority (79%) of RF units (n = 228) were nonmonotonic, and about 22% had upper-thresholds.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3837117 TI - Visual interneurons in the lobula complex of the fleshfly, Boettcherisca peregrina. AB - The physiology and morphology of visual interneurons in the lobula complex of the fleshfly, Boettcherisca peregrina, were studied using intracellular recordings and intracellular cobalt stainings, respectively. Using responses to movements of a spot of light and on-off stimuli at single positions, we classified the interneurons into five physiological groups ON, OFF, ON-OFF, non-directional motion sensitive (NDM) and directional motion sensitive (DM) neurons. They could be further divided into four morphological types, depending on the location and extent of their dendrites and terminal branches. PMID- 3837116 TI - Effect of rest deprivation on motor activity of fish. AB - The rest-activity behavior of two fish species, Cichlosoma nigrofasciatum and Carassius auratus kept under 12-h light-12-h dim condition was investigated. Rest and activity were determined from continuous time-lapse video recordings. Three states were discriminated based on the degree of motor activity. Both species exhibited a clear rest-activity rhythm with activity predominating during the light period. 'Rest deprivation' was carried out in perch during the habitual dim period by exposing the animals to either 12 h continuous light or to 6 h intermittent light (1 h light - 1 h dim for 12 h). Both light schedules enhanced activity and reduced rest. Light-induced activation was followed by an increase in low activity and rest behavior which prevailed for 12 h following continuous light, and for 6 h following intermittent light. The results indicate that homeostatic mechanisms are involved in the regulation of rest and activity in fish. These mechanisms may be similar to those underlying sleep regulation in mammals. PMID- 3837118 TI - Collision with and avoidance of obstacles by blind cave fish Anoptichthys jordani (Characidae). AB - Blind Mexican cave fish (Anoptichthys jordani) were released into unknown surroundings and their swimming tracks were recorded. During the first 24 h in a new tank, i.e., in unfamiliar environments, the average swimming velocity of the fish was higher than during the remaining time in the tank. Collision with obstacles was recorded by an electrical contact detection method. Single frame analysis of video-recordings revealed that collision can be correlated with tail movements when the fish is close to an obstacle, whereas avoidance correlates with gliding during approach to an obstacle. These behavior patterns are discussed in the context of the flow field hypothesis and inhibition of the lateral line organ during movement. PMID- 3837119 TI - Changes in incidence of shigella subgroups and their antibiotic susceptibility pattern in Vellore, South India. AB - Investigations were carried out on faecal samples of cases of diarrhoea presenting at a hospital in Vellore, South India, over a period of 1 year. Pathogens were identified and tested for susceptibility to a number of antibiotics. Blood cultures were carried out where septicaemia was suspected. It was found that the relative frequencies of the shigella subgroups have changed since previous reports. The paper reports changing resistance patterns of shigellae to antibiotics and the existence of a number of multiple drug resistant strains. The authors recommend constant surveillance of resistance patterns so that effective therapy can be given in emergency conditions. PMID- 3837120 TI - Diphtheria in Afghanistan--review of 155 cases. AB - During the 3-year study period, 155 culture-positive cases of diphtheria were reviewed at the Institute of Child Health, Kabul. They comprised 0.6% of hospital admissions due to medical disorders in our institute. About 80% of patients belonged to an age group of 1-10 years and only two patients were less than 1 year old. The male to female ratio was 1.3:1. There was no history of previous vaccination against diphtheria in 96.7% of patients. In the majority of patients faucial diphtheria was diagnosed (77.4%), followed by laryngeal (16.1%) an combined pharyngolaryngeal (6.5%). Clinical presentation was with a mild to moderate degree of fever, sore throat, cervical lymphadenopathy, toxaemia, tachycardia and a characteristic thick greyish-white membrane. The main early complications were laryngeal obstruction (35), myocarditis (18), shock (3), polyneuritis (3) and renal failure (2). The overall case fatality rate was 19.3%. Prognosis was unfavourable in patients with laryngeal diphtheria when there was a delay of more than 4 days before reaching the hospital and if there was a delay in relieving laryngeal obstruction by tracheostomy. Outcome was unrelated to the age of the patient. PMID- 3837122 TI - Positive direct antiglobulin test associated with echinococcosis: a case report. AB - A patient with hydatid cyst of the liver was found to have a positive direct antiglobulin test, with IgG and complement on his red blood cells (RBCs), but with no evidence of haemolysis. The positive direct antiglobulin test disappeared following surgical removal of the cyst. To the best of our knowledge no such case has been reported in the literature. PMID- 3837121 TI - Current clinical patterns of typhoid fever: a prospective study. AB - This paper reports on a prospective study comprising 125 consecutive adult cases of typhoid fever diagnosed on the basis of positive cultures for typhoid organisms. Salmonella typhi infection was found to be more frequent (89.6%) than S. paratyphi A & B (10.4%). Onset of the disease was usually insidious and the classical step-ladder pattern of fever was uncommon (12%). Rose spots were observed in 9.6% cases. Gut perforation was more common, while typhoid toxaemia and peripheral circulatory failure were less frequent than in most of the series reported from India. Both these variations are ascribed to the widespread use of corticosteroids in our patients. Gut perforation alone accounted for three quarters of the deaths. PMID- 3837123 TI - Venepuncture pain can be reduced. AB - A lidocaine-prilocaine cream, 'eutectic mixture of local anaesthetics' (EMLA) and placebo were compared regarding their ability to diminish venepuncture pain in Oriental infants and young children. The investigation was double-blind and randomized. Twenty-eight children (median age 30 months) were treated with a placebo and 27 (median age 24 months) with EMLA. All pain reactions were observed by the same investigator and classified according to a three-grade scale: no pain, slight pain and severe pain. Treatment with EMLA resulted in significantly lower pain scores than treatment with the placebo (z = 2.67, P less than 0.01). No adverse reactions were observed. PMID- 3837124 TI - Infant deaths in a health unit area of Northern Sri Lanka. AB - Ninety-seven infant deaths that occurred during 1 year were almost equally distributed in the neonatal and post-neonatal periods. The low infant mortality rate (IMR) reported for the area was found to be due to poor registration of deaths. The actual IMR is 35.4. Lower respiratory tract infections and gastroenteritis were the chief causes of death, with low birth weight contributing to it. Among these deaths, as a conservative estimate, 20 have been identified as preventable. Prevention of these deaths would reduce the IMR to 28.1. Practitioners of indigenous medicine need training on the management of dehydration in infants, and the mothers should be taught the proper use of oral rehydration solution. Families belonging to low 'social caste' were more at risk of infant deaths. This study shows the importance of small, community-based investigations in order to identify vulnerable small socio-cultural groups in developing countries. PMID- 3837125 TI - Community participation in Afghan refugee camps in Pakistan. AB - Community participation is regarded by many as the key to the primary health care (PHC) approach; that is the most essential factor in determining the success of failure of a PHC programme. In September 1983, UNICEF and Save the Children Fund (SCF) signed an agreement for a pilot PHC project in Badaber refugee camp, Pakistan, as the first phase in development of PHC in areas settled by Afghan refugees, under the supervision of the United Nations High Commission for Refugees (UNHCR) ant the government of Pakistan. This paper reviews the factors enhancing and inhibiting the formation of a community, describes how community participation was achieved in Badaber and discusses the prospects for replication of the model in the 86 camps in North West Frontier Province which are funded by UNHCR. PMID- 3837126 TI - The effects of zinc chloride on the RNP structures in HEp-2 cells: accumulation of perichromatin granules. AB - The effects of zinc on the ribonucleoprotein (RNP) constituents of HEp-2 cells have been analyzed. Pulse-chase autoradiographic experiments show a preferential inhibition of nucleolar RNA synthesis and a block in the transport of nucleolar and extranucleolar RNA in zinc-treated cells. Concomitantly with the disturbance in RNA metabolism and in protein synthesis, nucleolar condensation, accumulation of perichromatin granules and fibrils, condensation of interchromatin fibrils, and appearance of dense granular bodies occur. Accumulation of perichromatin fibrils and condensation of interchromatin fibrils appear to be related to the block in the transport of heterogeneous nuclear RNA. Depletion of certain proteins required for the assembly of RNP particles could share in the abnormal behavior of RNA and lead to the accumulation of perichromatin granules and the appearance of dense granular bodies. PMID- 3837127 TI - Are there knobs on energy transducing membranes in situ? AB - It is argued here that the projections which are frequently seen on the matrix side of the mitochondrial inner membranes and which are characterized as globules or spherical projections or as knob-on-stalks are an artifact of the preparation and/or of the staining of the submitochondrial particles or mitochondria. In sectioned or freeze-fractured preparations of intact cells or mitochondria, the externalized spheres are rarely seen on the membranes. They are, however, almost always seen on fragmented preparations, especially if they have been negatively stained with phosphotungstate. PMID- 3837128 TI - [Giant mitochondria in the A cells of the pancreas of a lizard: Varanus niloticus]. AB - Pancreatic A cells of the lizard Varanus niloticus are characterized by the presence of two types of mitochondria: (a) normal, small mitochondria (about 0.4 X 1 micron), and (b) giant mitochondria, measuring up to 9 micron in length and 1 micron in diameter. Giant mitochondria show various shapes. Their matrix is filled with tubules, filaments, and dense granules. Transverse sections of tubules are polygonal in shape and about 20 nm in diameter. They are grouped in bundles. The filaments, about 9-10 nm in diameter, are arranged in parallel layers crossing each other at a 57 degree angle. In a closely related species, Varanus exanthematicus, pancreatic A cells do not show these peculiar features. PMID- 3837129 TI - Quantitative analysis of development of mitochondrial ultrastructure in differentiating mouse hepatocytes during postnatal period. AB - Between birth and 10 days of age, the volume density (volume/unit cytoplasmic volume) of the matrix, and the surface density (area/unit cytoplasmic volume) of the inner membrane and cristae increased in both periportal and perihepatic hepatocytes, and did not differ significantly between the cells of the two zones. After 10 days of age, however, the volume density of the matrix decreased in perihepatic cells and remained unchanged in periportal cells, and, therefore, it became greater in periportal cells than in perihepatic cells in 20-day-old and adult animals. The surface density of the inner membrane and cristae decreased in the cells of both zones. Further, the hepatocyte volume increased markedly, especially in perihepatic zones between 20 days of age and the adult. The results show that, in postnatally differentiating hepatocytes, mitochondria are likely to develop during early postnatal period, then the structural heterogeneity of mitochondria arises, and hepatocyte volume increases markedly during late postnatal period after weaning. Thus, the process of postnatal hepatocyte differentiation includes such several phases of development. PMID- 3837130 TI - A simple method for analysis of superoxide dismutase in animal tissues by cellulose acetate electrophoresis. PMID- 3837131 TI - Antitumor activity of polysaccharide fractions from the brown seaweed Sargassum kjellmanianum. PMID- 3837133 TI - [Treatment of pre-eclampsia and eclampsia]. AB - From 1964 to 1984 (a 21-year period), out of 102.277 deliveries, there were 80 cases (0.8%) of eclampsia and 443 cases (4.3%) of pre-eclampsia. One patient (1.25%) with eclampsia died after delivery. Out of 539 children from mothers with pre-eclampsia and eclampsia, 44 (8.2%) died after birth. The delivery of the greatest number of women with pre-eclampsia and eclampsia was terminated vaginally (81.5% and 77.5% respectively). In the prevention and treatment of convulsions the authors use Diazepam and also the antihypertensive drug Diazoxide, along with the administration of diuretics (Furosemide) if necessary. For the reconstitution of fluid, they apply plasma expanders, electrolyte solutions, and 10% glucose infusions. All patients with eclampsia should be delivered by the vaginal induction of labour or by caesarean section as soon as the convulsions are under control. PMID- 3837132 TI - [Abortion in the 2d trimester using carboprost tromethamine]. AB - The authors present their own experience (1980-1985) in the application (im. so called "monotone rhythm and doses") of Prostin 15-M (Upjohn) in legal abortions in the second trimester (14th-20th gestational weeks). This preparation was applied in 470 patients divided into 3 groups for the purpose of differential treatment and analysis: A--gravidae juvenae 13-18 years of age, B--gravidae adultae (19-40 years of age) C--gravidae vetustae 41-46 years of age. The mean age of patients by age groups was: A-16 years + 8 months; B-26 years + 3 months; C-42 years + 7 months. Indications for abortion were: medical in 53.83%, eugenic in 30.21%, medico-social in 14.25%, and ethico-legal in 1.70%. The percentage of primigravidae was 40.42 and of multigravidae 59.76%. The average length of the abortion interval and the average dose of Prostin 15-M (in ml) were as follows: group A 28 h 30' and 8.92 ml; group B 23 h 23' and 8.23 ml. and group C 16 h and 4.97 ml. All recorded side-effects and complications were analysed. Significant complications occurred in 5 cases (1.06%): cervical rupture in 3 cases and massive postabortal haemorrhage in 2 cases. No deaths occurred. The authors elaborated a system of the differential evaluation of the efficacy of this method and its advantages over other methods previously applied. The method has proved to be very simple, efficacious, suitable from the medico-clinical point of view, with a relatively low percentage of complications, and economical (costs of treatment and hospitalisation). PMID- 3837134 TI - [Premalignant and malignant changes in the uterine cervix in women younger than 30 years]. AB - From 1974 to 1983, 124.471 cervico-vaginal smears after Papanicolaou were analysed. Group I and II findings numbered 97.06%, group III 2.28%, group IV 0.54%, and group V 0.12%. Most findings of groups III and IV related to women in their forties (32%), then to those in the fifties (28.2) and in the thirties (26%). Out of 1522 group III women, 261 were histologically examined: there were 78 dysplasias, 108 carcinomas in situ, 27 invasive carcinomas, and 48 benign changes. Out of 317 group IV women, there were 33 benign changes, 66 dysplasias, 158 carcinomas in situ, and 60 invasive carcinomas. Out of 78 group V women, there were 7 benign changes and dysplasias each, 17 carcinomas in situ, and 47 invasive carcinomas. Most dysplasias and carcinomas in situ were found in women in their forties (39.9), a smaller number in women in their thirties (29.4%), and the smallest number in women in their fifties (22.5%). Out of all invasive carcinomas, the highest number was found in women in their fifties (32.09%), the peak being about ten years later than that relating to dysplasias and carcinomas in situ. The conclusion is that the screening of the uterine cervix should start already at the time of defloration. PMID- 3837135 TI - Effects of antihypertensive agents on lipids, lipoproteins, and coronary heart disease. PMID- 3837136 TI - Osteoarthritis V: medical management. PMID- 3837138 TI - Supervision of the impaired physician in a clinical practice setting. PMID- 3837137 TI - Miliary tuberculosis masquerading as late infection in total hip replacement. PMID- 3837139 TI - Current approach to PID. PMID- 3837140 TI - Health care costs--past, present, and future. PMID- 3837141 TI - Characteristics of hospitalized TB patients: Montebello Center, Maryland, 1981 to 1983. PMID- 3837142 TI - Osteoarthritis. VI: The hip--surgical management. PMID- 3837144 TI - Curriculum in ambulatory care. PMID- 3837143 TI - Emergency treatment of anaphylactoid reactions to radiographic contrast materials. PMID- 3837145 TI - High-pressure tool injection injuries. PMID- 3837146 TI - Management of primary adenocarcinoma of the large bowel. PMID- 3837147 TI - Occult hemorrhage in a neonate with hemophilia A. PMID- 3837148 TI - The use and abuse of cimetidine in a gastroenterology clinic. PMID- 3837149 TI - Osteoarthritis. VII: Rheumatic disease in the elderly. PMID- 3837150 TI - Treatment of hypertension in special populations. PMID- 3837151 TI - Osteoarthritis. VIII:--Surgical management of the knee. PMID- 3837153 TI - The newborn with acyanotic congenital heart disease: recognition and management. PMID- 3837152 TI - Preventive cardiology. PMID- 3837154 TI - Chest pain in children: identifying a source. PMID- 3837155 TI - Noninvasive assessment of pediatric congenital heart disease. PMID- 3837156 TI - Aftermath of pediatric heart surgery. PMID- 3837157 TI - Child abuse and neglect: sexual abuse of prepubertal children. PMID- 3837158 TI - Prognosis and management of cutaneous melanoma. PMID- 3837159 TI - Computerized literature searches. PMID- 3837160 TI - The impaired physician. What he doesn't know will hurt him. PMID- 3837161 TI - Use of 24-hour pH monitoring for gastroesophageal reflux. PMID- 3837162 TI - Osteoarthritis. IX: Biomechanical factors, prevention, and nonpharmacologic management. PMID- 3837163 TI - Hematuria from metastatic cancer to the kidney: case report and literature review. PMID- 3837164 TI - The elderly and medical care in America: their own evaluation of quality, access and cost. PMID- 3837165 TI - The dysfunctional pain patient--returning to work: a preliminary report. PMID- 3837166 TI - Rationale for physicians' decisions to refer obese patients. AB - Health care costs are an increasing burden upon American society. Referral of patients to a specialist generates additional cost. We studied the reasons behind decisions to refer patients with uncomplicated obesity to endocrinologists. Obesity may be viewed as a paradigm of diseases with relatively well-known etiology, low morbidity and mortality, chronicity, and poor outcome from standard therapy. In addition, it is a disease that is rarely curable by medical intervention, requiring behavioral change. Physicians have little direct experience in the differential diagnosis of endocrine disease, because of its low prevalence. We studied the referral decisions of 45 physicians in three medical specialties. Clinical decision making was studied using a standard set of 24 carefully structured case reports of obese women, all without obvious endocrine disease cues on history or physical. In these cases the patients' desire to be seen by endocrinologists was the major factor in the decision to refer. Referrals were not made primarily to rule out suspected endocrine disorder or because of concern for increased risk of morbidity. PMID- 3837167 TI - Problem solving in undergraduate medical students. AB - In recent years the systematic development of the skill of clinical reasoning has come to assume a high priority as an explicit aim of medical education. Clinical reasoning, it is contended, is the application of general reasoning and problem solving skills to the specific knowledge base of medicine. The results presented in this paper constitute a preliminary study designed to investigate the ability of first-year medical undergraduates to solve abstract problems using a simple nonmedical knowledge base. Further studies are being carried out and will continue to extend this into the specific medical knowledge base area. The potential implications for medical education and the development of clinical reasoning are discussed. PMID- 3837168 TI - The use of the "range of uncertainty". AB - Most laboratory tests are hampered by overlap of the population with a disease and the population without the disease. An efficient approach to clinical problem solving is to order tests in sequence and focus on the overlap zone of each test- the "range of uncertainty." Indeed, only cases that fall in that range need further workup. All others will have the suspected diagnosis made or excluded with reasonable confidence and need no further testing. To demonstrate the application of this concept, we correlated the iron saturation test and ferritin levels sequentially with the presence or absence of stainable iron in the bone marrow of 139 patients. This model should be suitable for other laboratory tests; it may decrease the use of the laboratory in clinical decision making and reduce the discomfort and cost of additional tests. PMID- 3837169 TI - [Ectoparasites in rodents of the urban region of Belo Horizonte, MG. III. Fleas, Anoplura and Acari indices in Rattus norvegicus norvegicus]. AB - The total and specific indices of fleas, lice and mites were determined for ectoparasites on Rattus norvegicus norvegicus capture in urban areas of Belo Horizonte, Minas state, Brazil, from June 1980 to September 1982. In view of the limiting or critical values attributed to flea indices above all the "cheopis" index, proposed by several authors as a complementary measure for bubonic plague surveillance, the community of Belo Horizonte would have been exposed to this infection. The annual total indices ranged from 0.3 to 2.4 and the prevalent flea was Xenopsylla cheopis (99.2%), with the highest indices coinciding with the late dry-cool season. On two occasions, in this period, the community would have remained highly exposed to infection, since the index-limits were superseded: 8.8 (October 1980) and 6.2 (September 1982). It is suggested that preventive measures, such as protection against rat insecticide treatment may be efficiently applied in the late dry-cool season, or previous to the rainy season, before the elimination of rats. Reports on indices of lice and mites are important as they may establish index-limits for certain infections exclusive to rodents. PMID- 3837170 TI - The retained capacity of Lutzomyia longipalpis (Lutz & Neiva) to transmit Leishmania chagasi (Cunha & Chagas) after eight years (64 generations) in a closed laboratory colony. AB - A closed Lutzomyia longipalpis colony, from Ceara has been used to transmit Leishmania chagasi isolated from a fox in Para state. The last time this colony was successfully used in similar transmission experiments was eight years (64 generations) ago indicating that this colony of Lu. longipalpis has fully maintained its vectorial capacity in spite of such a long period of maintainance in the laboratory. PMID- 3837171 TI - Canine visceral leishmaniasis in Rio de Janeiro, Brazil. Clinical, parasitological, therapeutical and epidemiological findings (1977-1983). AB - Forty dogs from the periphery of the city of Rio de Janeiro were studied. All dogs where diagnosed as positive for leishmaniasis either parasitologically and/or serologically. Among them, 19 came from areas where only Visceral Leishmaniasis (VL) occurs (Realengo, Bangu, Senador Camara). Clinical signs of the disease were seen in 36.8% of the cases, including emaciation - 100%, lymphadenopathy and depilation - 85.7%. The other 21 dogs came from an area (Campo Grande) where both diseases (VL, and American Cutaneous Leishmaniasis - ACL) occur. Clinical signs of the disease, mainly cutaneous or mucocutaneous ulcers were seen in 76.2% of the cases. Leishmania parasites were found in 39 cases: 22% in viscera, 42.5% in viscera and normal skin and 35% in cutaneous or mucocutaneous ulcers. All the Leishmania stocks isolated from dogs which came from Realengo, Bangu, Senador Camara (VL area), and from Campo Grande (VL + ACL area) were characterized as L. donovani (except in one case) according to their schizodeme, zymodeme and serodeme. The only stock characterized as L. b. braziliensis, was isolated from the lymph node of a dog from Campo Grande with visceral disease and without skin lesions. Antimony therapy attempted in eight Leishmania donovani positive dogs was unsuccessful. PMID- 3837172 TI - Flagellates in the malpighian tubules of laboratory-bred Lutzomyia longipalpis fed on a hamster experimentally infected with Leishmania mexicana amazonensis. AB - As a preparatory stage for a study aiming at identifying the species and subspecies of local Leishmania in naturally infected sandflies through immunoradiometric assay with monoclonal antibodies, we tried to obtain experimental infections of phlebotomines with well characterized stocks of parasites, in order to test the effectiveness of the method. PMID- 3837173 TI - Observations on the sandfly (Diptera: Psychodidae) fauna of Alem Paraiba, State of Minas Gerais, Brazil, and the isolation of a parasite of the Leishmania braziliensis complex from Psychodopygus hirsuta hirsuta. AB - Dissection of 765 sandflies captured in Alem Paraiba (the type locality of Leishmania braziliensis) resulted in the isolation, from Psychodopygus hirsuta hirsuta, of a parasite of the Le. braziliensis complex. PMID- 3837174 TI - Vasomotion and transvascular exchange of fluid and plasma proteins. AB - The effect of spontaneous arteriolar vasomotion on the transvascular exchange of fluid and plasma proteins has been studied theoretically. The model combines fluid dynamic principles with a phenomenological approach to transvascular exchange on the basis of irreversible thermodynamics. The analytical treatment of the intravascular flow together with consideration of local changes of the morphology and vascular membrane characteristics makes it possible to determine the spatial and temporal variation of transvascular fluid and plasma protein fluxes. Since the undulations of the arteriolar diameter have low frequencies (3 to 10 per cycle), the transvascular fluxes are in phase with the vasomotion. The model combines hemodynamics, microhemorheology and mass transfer at the vessel wall and provides pressures, velocities, plasma protein concentration, hematocrit and apparent blood viscosity at any position in the microvascular bed at any time. In addition, global parameters as the total filtration rate and the total transvascular mass flow rate of plasma proteins are determined as functions of time. Numerical results are obtained for the cat mesentery with the terminal arteriole exhibiting vasomotion. The vascular arrangement studied comprised a terminal arteriole, capillaries and a venule together with appropriate side branches. The results show dramatic temporal changes in the hemodynamic parameters. Fluid filtration occurs along the entire vascular length at all times except during vasoconstriction when small absorption rates occur on the venous side. The transvascular fluxes achieve maximum values either on the arteriolar or on the venular side depending on the moment of the vasomotion cycle. The transvascular exchange rates in the mid-capillaries are generally low. PMID- 3837175 TI - Nuclear magnetic resonance parameters of water in biological tissues. AB - Water is an essential ingredient for life; yet, in cells, its physical properties and their implications to function are poorly understood. Even though our knowledge is incomplete, all theories of cellular function have explicit or implicit assumptions about the physical properties of water. This report contains various views of the cell and the functional role of water in those views is presented. In addition, a view of the scientific thought that led to the first studies of pathophysiological states using nuclear magnetic resonance (NMR) technology is presented. Finally, an attempt is made to show that it is important for us to know more about the physical properties of water, as determined by NMR techniques. This is thought to be important not only for the testing of our cellular theories but also for a better understanding of the information content of NMR images which are fast becoming common place. PMID- 3837176 TI - Quantitative changes in mast cells and microvascular pattern associated with dietary gastric ulceration in rats. AB - The regional distribution of mast cells and the microvascular pattern in the stomach of Wistar rats fed on an ulcerogenic diet were compared with those of control animals. Mounts of the distended stomach were made and stained for blood vessels and mast cells in the subserosal layer. Measurements made under dark ground illumination in 12 operationally defined regions of the serosa demonstrated that the stomach wall in the region around the oesophagus is more richly vascularised and possesses a greater number of mast cells (60 cells per mm2) than other regions. Changes in the mast cells and microvasculature were observed in rats fed an ulcerogenic diet, notably in the zone around the oesophagus, where more than 30% mast cells were degranulated and the mean vascular diameter increased by 26%. The severity of the vascular changes correlated with the location of the ulcers of which 50% were in the zone surrounding the oesophagus. PMID- 3837177 TI - Altered skeletal muscle microvascular hemodynamics after one week of streptozotocin-induced diabetes. AB - The aim of this study was to examine alterations in skeletal muscle microvascular hemodynamics occurring one week after the onset of streptozotocin diabetes. Diabetes was induced in 9 male, Sprague-Dawley rats by intraperitoneal streptozotocin (60 mg/kg); 10 age-matched rats acted as controls. The animals were then studied 6-8 days after the induction of diabetes. For study of skeletal muscle microvascular hemodynamics the right cremaster muscle was exteriorized. Vessel diameters were measured with an image shearing monitor and red blood cell velocity was determined with an optical Doppler velocimeter. Measurements were taken in the resting and dilated (adenosine applied topically to the muscle) states. In the resting state, diabetic rats showed significant enlargement of venules less than 120 microM, while arteriolar diameters were comparable to those of controls. The extent of dilation in response to adenosine was significantly decreased in both the arterioles and venules of the diabetic animals. Blood flow through the main arteriole supplying the tissue was significantly decreased in the diabetic animals in both the resting and dilated states. The results of this study demonstrate changes in skeletal muscle hemodynamics after one week of streptozotocin diabetes. The diabetic animals are characterized by decreased perfusion and diminished ability to lower vascular resistance by vasodilation. PMID- 3837178 TI - Control of thymidylate synthase mRNA content and gene transcription in an overproducing mouse cell line. AB - We studied the content and metabolism of thymidylate synthase mRNA in cultured mouse fibroblasts that were undergoing a serum-induced transition from the resting to growing state. The studies were performed with a 5-fluorodeoxyuridine resistant 3T6 cell line (LU3-7) that over produces the enzyme and its mRNA about 50-fold and that regulates the expression of the thymidylate synthase gene in the same manner as the parental cell line. We have previously shown that the rate of synthesis of thymidylate synthase increases at least ninefold when the serum stimulated cells traverse the S phase. Here we show, by Northern blot analysis, that thymidylate synthase mRNA increased 20- to 40-fold as cells progressed from resting to late S phase. About 85% of poly(A)+ thymidylate synthase mRNA was associated with polysomes at all times. The increase in thymidylate synthase poly(A)+ mRNA content was the result of an eightfold increase in the rate of production of this species, as shown by pulse-labeling studies. Pulse-chase analysis revealed that the half-life of thymidylate synthase poly(A)+ mRNA was similar in resting (9 h) and growing (7 h) cells. The rate of transcription of the thymidylate synthase gene, as determined in isolated nuclei, increased only by a factor of three to four during the S phase. Since the content of the message increased to a much greater extent than the rate of transcription of the gene, posttranscriptional controls must also play a role in regulating the content of thymidylate synthase mRNA under these conditions. Our results suggest that the cell may regulate the distribution of thymidylate synthase mRNA between a relatively stable poly(A)+ RNA species and a labile poly(A)- RNA species. PMID- 3837179 TI - A polymorphic, prespore-specific cell surface glycoprotein is present in the extracellular matrix of Dictyostelium discoideum. AB - Polymorphisms of a major developmentally regulated prespore-specific protein (PsA) in Dictyostelium discoideum slugs are described. These polymorphisms allowed discrimination between PsA (found on the cell surface and in the extracellular matrix) and a similar extracellular but nonpolymorphic protein, ShA. The two proteins were also distinguished by their differing reactivities with a range of monoclonal antibodies and by their sensitivity to release from the sheath with cellulase. The results are discussed in terms of the molecular and genetic relationships between the cell surface and the extracellular matrix during development. PMID- 3837180 TI - Stabilization of a specific nuclear mRNA precursor by thyroid hormone. AB - The regulation of a thyroid hormone-responsive gene in rats, designated spot 14, was explored. The expression of this gene in liver is rapidly (less than 10 min) and markedly (greater than 10-fold) altered by the administration of 3,5,3' triiodo-L-thyronine (T3) to hypothyroid rats (P. Narayan, C. W. Liaw, and H. C. Towle, Proc. Natl. Acad. Sci. USA 81:4687-4691, 1984). To investigate the cellular site at which T3 acts to induce this hepatic mRNA, we made parallel measurements of the relative levels of spot 14 mRNA and nuclear precursor RNA and of the rate of gene transcription after treatments designed to alter the thyroid status of rats. The relative levels of both the mRNA and nuclear precursor were elevated roughly 5- to 6-fold in euthyroid animals and 9- to 12-fold in hyperthyroid animals over those in hypothyroid controls. However, only a small difference of approximately 1.5-fold was detected in the rate of spot 14 gene transcription. After a single injection of T3 into hypothyroid animals, a small and transient rise in the transcription rate was detected at 30 min. However, the levels of spot 14 mRNA and nuclear precursor RNA increased much more dramatically throughout the first 4 h of treatment. In both cases, changes in the rate of gene transcription were not capable of accounting for the alterations observed in mRNA levels. Thus, the major site of spot 14 gene regulation by T3 is at a posttranscriptional level. The proportional changes observed in the nuclear precursor and mRNA levels suggest that the site of control is at the level of stability of the nuclear precursor RNA for spot 14 mRNA. PMID- 3837181 TI - Induction of adenine salvage in mouse cell lines deficient in adenine phosphoribosyltransferase. AB - Adenine phosphoribosyltransferase (APRT) (EC 2.4.2.7) pseudorevertant cell lines were isolated under selective conditions requiring adenine salvage for survival; yet they were found to be deficient in measurable APRT activity and resistant to the purine analog 2'6'-diaminopurine (DAP) (M.S. Turker, J. A. Tischfield, P. Rabinovitch, P.J. Stambrook, J.J. Trill, A.C. Smith, C.E. Ogburn, and G.M. Martin, manuscript in preparation). Adenine salvage was examined in two APRT pseudorevertant cell lines, their two APRT homozygous deficient parental cell lines, and a genotypic APRT revertant cell line (i.e., one with measurable APRT activity and DAP sensitivity). Adenine accumulation was observed in both revertant phenotypes and was demonstrated by high-performance liquid chromatography to be linked with adenine metabolism. The ability to salvage adenine declined substantially in the pseudorevertant cell lines when they were removed from selective media containing inhibitors of de novo 5'-AMP synthesis (alanosine and azaserine); for one pseudorevertant cell line this decline was accelerated by the addition of DAP to the medium. The readdition of alanosine or azaserine to the growth medium of the pseudorevertant lines induced adenine salvage to its previous levels. An APRT-like cross-reacting material was found in the pseudorevertant cell lines, although its relationship to adenine salvage is unknown. A low level of constitutive adenine salvage was found in the parental APRT-deficient lines, and it was also possible to induce adenine salvage in these cell lines. These findings suggest a novel regulatory mechanism for adenine salvage. PMID- 3837183 TI - Stimulation of sea urchin H2B histone gene transcription by a chromatin associated protein fraction depends on gene sequences downstream of the transcription start site. AB - We isolated a chromosomal protein fraction derived from chromatin of sea urchin embryos which specifically stimulated the expression of the histone H2B gene by a factor of 5- to 10-fold when the complete sea urchin histone gene repeat h22 was injected in Xenopus laevis oocyte nuclei. Gene manipulation experiments revealed the existence of two different target sites in the H2B gene which appear to mediate the response to injection of the stimulatory sea urchin chromatin associated proteins; both are located downstream of the transcription initiation site. The first sequence element which is shown to be implicated is within, or at least includes, the H2B 5' untranslated leader sequence between nucleotides 11 and 76. The second element resides within an H2B DNA segment located near the 3' end of the gene, extending from 90 base pairs upstream of the mRNA 3' terminus to 140 base pairs in the spacer sequences downstream. PMID- 3837182 TI - Evolution of the functional human beta-actin gene and its multi-pseudogene family: conservation of noncoding regions and chromosomal dispersion of pseudogenes. AB - We have assigned six members of the human beta-actin multigene family to specific human chromosomes. The functional gene, ACTB, is located on human chromosome 7, and the other assigned beta-actin-related sequences are dispersed over at least four different chromosomes including one locus assigned to the X chromosome. Using intervening sequence probes, we showed that the functional gene is single copy and that all of the other beta-actin related sequences are recently generated in evolution and are probably processed pseudogenes. The entire nucleotide sequence of the functional gene has been determined and is identical to cDNA clones in the coding and 5' untranslated regions. We have previously reported that the 3' untranslated region is well conserved between humans and rats (Ponte et al., Nucleic Acids Res. 12:1687-1696, 1984). Now we report that four additional noncoding regions are evolutionarily conserved, including segments of the 5' flanking region, 5' untranslated region, and, surprisingly, intervening sequences I and III. These conserved sequences, especially those found in the introns, suggest a role for internal sequences in the regulation of beta-actin gene expression. PMID- 3837184 TI - Microinjection of mRNA enhances translational efficiency of human adenovirus fiber message in monkey cells. AB - In monkey cells abortively infected with human adenovirus serotype 2, the synthesis of the fiber polypeptide of the virion capsid is reduced by at least a factor of 100 when compared with that in monkey cells productively infected with a host range mutant of adenovirus serotype 2 (Ad2hr400). However, the steady state level of fiber-encoding mRNA present in abortively infected monkey cells is only reduced by a factor of 5 to 10. When mRNA isolated from abortively and productively infected monkey cells was microinjected into the cytoplasms of uninfected or abortively infected monkey cells, no differences in the efficiency of translation of the fiber messages from these two sources were observed. These results suggest that the block to synthesis of the fiber polypeptide in abortively infected monkey cells does not reside in the translational machinery of the abortively infected cells themselves but may involve compartmentalization of the fiber message within the cells or an altered processing of the fiber message which prevents correct presentation to the ribosomes. PMID- 3837185 TI - Human U1 small nuclear RNA genes: extensive conservation of flanking sequences suggests cycles of gene amplification and transposition. AB - The DNA immediately flanking the 164-base-pair U1 RNA coding region is highly conserved among the approximately 30 human U1 genes. The U1 multigene family also contains many U1 pseudogenes (designated class I) with striking although imperfect flanking homology to the true U1 genes. Using cosmid vectors, we now have cloned, characterized, and partially sequenced three 35-kilobase (kb) regions of the human genome spanning U1 homologies. Two clones contain one true U1 gene each, and the third bears two class I pseudogenes 9 kb apart in the opposite orientation. We show by genomic blotting and by direct DNA sequence determination that the conserved sequences surrounding U1 genes are much more extensive than previously estimated: nearly perfect sequence homology between many true U1 genes extends for at least 24 kb upstream and at least 20 kb downstream from the U1 coding region. In addition, the sequences of the two new pseudogenes provide evidence that class I U1 pseudogenes are more closely related to each other than to true genes. Finally, it is demonstrated elsewhere (Lindgren et al., Mol. Cell. Biol. 5:2190-2196, 1985) that both true U1 genes and class I U1 pseudogenes map to chromosome 1, but in separate clusters located far apart on opposite sides of the centromere. Taken together, these results suggest a model for the evolution of the U1 multigene family. We speculate that the contemporary family of true U1 genes was derived from a more ancient family of U1 genes (now class I U1 pseudogenes) by gene amplification and transposition. Gene amplification provides the simplest explanation for the clustering of both U1 genes and class I pseudogenes and for the conservation of at least 44 kb of DNA flanking the U1 coding region in a large fraction of the 30 true U1 genes. PMID- 3837186 TI - Human U1 small nuclear RNA pseudogenes do not map to the site of the U1 genes in 1p36 but are clustered in 1q12-q22. AB - Human U1 small nuclear RNA is encoded by approximately 30 gene copies. All of the U1 genes share several kilobases of essentially perfect flanking homology both upstream and downstream from the U1 coding region, but remarkably, for many U1 genes excellent flanking homology extends at least 24 kilobases upstream and 20 kilobases downstream. Class I U1 RNA pseudogenes are abundant in the human genome. These pseudogenes contain a complete but imperfect U1 coding region and possess extensive flanking homology to the true U1 genes. We mapped four class I pseudogenes by in situ hybridization to the long arm of chromosome 1, bands q12 q22, a region distinct from the site on the distal short arm of chromosome 1 to which the U1 genes have been previously mapped (Lund et al., Mol. Cell. Biol. 3:2211-2220, 1983; Naylor et al., Somat. Cell Mol. Genet. 10:307-313, 1984). We confirmed our in situ hybridization results by genomic blotting experiments with somatic cell hybrid lines with translocation products of human chromosome 1. These experiments provide further evidence that class I U1 pseudogenes and the true U1 genes are not interspersed. The results, along with those published elsewhere (Bernstein et al., Mol. Cell. Biol. 5:2159-2171, 1985), suggest that gene amplification may be responsible for the sequence homogeneity of the human U1 gene family. PMID- 3837187 TI - Chromosomal position and specific demethylation in enhancer sequences of germ line-transmitted retroviral genomes during mouse development. AB - The methylation pattern of the germ line-transmitted Moloney leukemia proviral genome was analyzed in DNA of sperm, of day-12 and day-17 embryos, and of adult mice from six different Mov substrains. At day 12 of gestation, all 50 testable CpG sites in the individual viral genomes as well as sites in flanking host sequences were highly methylated. Some sites were unmethylated in sperm, indicating de novo methylation of unique DNA sequences during normal mouse development. At subsequent stages of development, specific CpG sites which were localized exclusively in the 5' and 3' enhancer regions of the long terminal repeat became progressively demethylated in all six proviruses. The extent of enhancer demethylation, however, was tissue specific and strongly affected by the chromosomal position of the respective proviral genome. This position-dependent demethylation of enhancer sequences was not accompanied by a similar change within the flanking host sequences, which remained virtually unchanged. Our results indicate that viral enhancer sequences, but not other sequences in the M MuLV genome, may have an intrinsic ability to interact with cellular proteins, which can perturb the interaction of the methylase with DNA. Demethylation of enhancer sequences is not sufficient for gene expression but may be a necessary event which enables the enhancer to respond to developmental signals which ultimately lead to gene activation. PMID- 3837188 TI - Lens-specific promoter activity of a mouse gamma-crystallin gene. AB - Crystallins are the major water-soluble proteins in vertebrate eye lenses. These lens-specific proteins are encoded by several gene families, and their expression is differentially regulated during lens cell differentiation. Here we show that a cloned mouse gamma-crystallin promoter is active in lens explants derived from 14 day-old chicken embryos but inactive in a variety of cells of non-lens origin. We also show that sequences required for proper utilization of this promoter are contained between nucleotide positions -392 and +47 relative to the transcription initiation site; deletion of sequences from positions -392 to -171 completely abolishes promoter activity. Since chickens do not have gamma-crystallin genes, the expression of a mouse gamma-crystallin promoter in chicken lens cells suggests that different classes of crystallin genes may be regulated by common lens tissue-specific mechanism(s) independent of species. PMID- 3837189 TI - Transcriptional and post-transcriptional regulation of ribulose 1,5-bisphosphate carboxylase gene expression in light- and dark-grown amaranth cotyledons. AB - The regulation of expression of the genes encoding the large subunit (LSU) and small subunit (SSU) of ribulose 1,5-bisphosphate carboxylase (RuBPCase) was examined in 1- through 8-day-old, dark-grown (etiolated) and light-grown amaranth cotyledons. RuBPCase specific activity in light-grown cotyledons increased during this 8-day period to a level 15-fold higher than in dark-grown cotyledons. Under both growth conditions, the accumulation of the LSU and SSU polypeptides was not coordinated. Initial detection of the SSU occurred 1 and 2 days after the appearance of the LSU in light- and dark-grown cotyledons, respectively. Furthermore, although the levels of the LSU were similar in both light- and dark grown seedlings, the amount of the SSU followed clearly the changes in enzyme activity. Synthesis of these two polypeptides was dramatically different in etiolated versus light-grown cotyledons. In light the synthesis of both subunits was first observed on day 2 and continued throughout the growth of the cotyledons. In darkness the rate of synthesis of both subunits was much lower than in light and occurred only as a burst between days 2 and 5 after planting. However, mRNAs for both subunits were present in etiolated cotyledons at similar levels on days 4 through 7 (by Northern analysis) and were functional in vitro, despite their apparent inactivity in vivo after day 5. In addition, since both LSU and SSU mRNA levels were lower in dark- than in light-grown seedlings, our results indicate that both transcriptional and post-transcriptional controls modulate RuBPCase production in developing amaranth cotyledons. PMID- 3837190 TI - Apparent gene conversion between beta-tubulin genes yields multiple regulatory pathways for a single beta-tubulin polypeptide isotype. AB - We have determined the complete nucleotide sequences of two chicken beta-tubulin genes, beta 1 and beta 2. These genes display an unusual pattern of segmental homology which indicates that they originally arose by gene duplication and have subsequently coevolved by a process that included localized gene conversion or intergenic recombination. Since the beta-tubulin polypeptides encoded by the two genes are virtually identical (99.5%), particularly in the major beta-tubulin isotype defining regions, they almost certainly constitute a single isotypic class of beta tubulin. However, the regulatory properties of the two genes are highly divergent as indicated by analysis of their patterns of expression in different chicken cell types. beta 1 is the major transcript detected in skeletal muscle myoblasts, whereas beta 2 is the major beta-tubulin transcript in cultured sympathetic neurons. The existence of these two genes appears to derive from a regulatory requirement whereby the expression of a single tubulin isotype is mediated through different regulatory programs in development and differentiation. These results thus provide direct experimental support for the hypothesis that gene conversion and intergenic recombination play an important role in evolution by uncoupling the evolution of structural genes from the regulatory sequences which control them. PMID- 3837191 TI - The spliced leader sequence of Trypanosoma brucei has a potential role as a cap donor structure. AB - Trypanosoma brucei brucei and other trypanosomatid species are unique among eucaryotes because transcription of their protein-coding genes is discontinuous. The 5' ends of their mRNAs consist of an identical 35-nucleotide spliced leader which is encoded at a separate locus from that for the body of the protein-coding transcript. We show here that the spliced leader transcript contains a 5' cap structure and suggest that at least one function of the spliced leader sequence is to provide a cap structure to trypanosome mRNAs. PMID- 3837192 TI - Simple isolation technique for osteoclasts from medullary bones. PMID- 3837193 TI - Binding of lead to plasma and erythrocytes--an in vitro experiment. PMID- 3837194 TI - Deficiency of the seventh component of complement with systemic lupus erythematosus. PMID- 3837195 TI - Volume response of human red cells toward glucose solution. PMID- 3837196 TI - One-stage procedure using a digitorum brevis muscle flap for reconstruction of a surgical defect after excision of malignant melanoma in the heel. PMID- 3837197 TI - Reconstruction of congenitally absent breast and pectoralis major muscle with latissimus dorsi muscle flap. PMID- 3837198 TI - Study on the mechanism of the antirachitic effects of T3. PMID- 3837199 TI - [Aspiration bronchopneumopathies]. AB - Diagnosis of pulmonary disease due to inhalation (PDI) is based on the assumption that not all paediatric pulmonary disease is attributable to infection. Moreover, an accurate investigation of all typical signs of PDI is necessary: drooling, pouring of food from the nose, choking, frequent vomiting and regurgitation. Specific aetiological diagnosis is not difficult when PDI represents only the epiphenomenon of well defined diseases which have disturbed deglutition (e.g. premature birth, cerebral palsy, muscle disease). It is difficult but more important to find the cause of dysphagia when dysphagia itself represents the first sign of dysfunction of the autonomic nervous system (e.g. familial dysautonomy). There are different PDI due to oesophageal dysphagia, e.g. the anomalous artery which presses the oesophagus against the trachea, oesophageal duplication, achalasia. The most frequent cause is gastro-oesophageal reflux, although recently its role in producing symptoms at night in the asthmatic child in much less. Gastro-oesophageal reflux is increased by the Beta2, agonists, the corticosteroids and theophylline. Therefore these drugs, especially theophylline, have to be used with discretion, also if gastro-oesophageal reflux is only suspected (e.g. frequent vomiting by the infant). Anomalous communication between the oesophagus and airways, particularly the laryngotracheo-oesophageal cleft and the isolated tracheoesophageal fistula, are rare diseases and difficult to diagnose. Therefore diagnosis can be delayed for months or even years. Prognosis is extremely variable: repeated inhalation will, however, cause diffuse interstitial fibrosis or, more rarely, a bronchiectasic lesion. PMID- 3837200 TI - [Bronchial hyperreactivity. I. General concepts]. AB - Bronchial hyperreactivity is a condition in which the airways show a much greater bronchoconstrictor response to provocative stimuli than normal. Non-specific bronchial hyperreactivity is a feature of asthmatic patients both allergic and non-allergic. It is proposed that bronchial hyperreactivity is due to the fact that the airways are narrower. In addition changes in the mass of muscle, and changes in the contractility of the muscle may contribute to bronchial hyperreactivity. Moreover bronchial hyperreactivity could be due to increased alpha-adrenergic or parasympathetic activity or to decreased beta-adrenergic or non adrenergic inhibitory activity. Bronchial hyperreactivity can be induced by factors such as infection, inflammation or exposure to allergens. PMID- 3837201 TI - [Clinical and functional sequelae of bronchiolitis]. AB - The authors carried out a follow-up on twenty-five children, affected with bronchiolitis in the early years of life, at seven years of age, in order to evaluate their clinical status and pulmonary function. Their parents were questioned about diseases of the small airways following to acute bronchiolitis. PRIST and RAST were effected in fourteen children; an evaluation of the pulmonary function with spirometry, flow-volume curve and body-plethysmography was done in every child. Then the flow-volume curve was repeated after bronchial provocation test with exercise (free running). Abnormalities of the pulmonary function at resting significant for small airways' obstruction were observed. A great number of children with bronchial hyperreactivity (60%) was observed after bronchial provocation test with exercise, particularly in those with genetic predisposition; 6/14 (43%) showed sensitization to many inhalant allergens, without correlation with genetic predisposition, clinical sequences and bronchial hyperreactivity. PMID- 3837202 TI - [Relation between blood eosinophilia and allergic respiratory disease in 2 different school-age populations]. AB - Two groups of children from 6 to 14 years old have been compared to explain correlation between haematic eosinophils and allergic respiratory diseases related with the environment where they live. First group was formed by 350 pupils of Sesto S. Giovanni, and industrialized town, the second group by 345 pupils of Cogliate, a country place. The screening was been preceded by a set of questions self-managed and it consisted in the determinations percentage of peripheral blood eosinophils. Patients whose eosinophils were more than 4% have been considered eosinophilia carrier. The results have been elaborated with statistical method "chi square". Results proved the greatest prevalence of allergic respiratory diseases in urban population with a greater eosinophilia spreading (33% in comparison with 26%; p less than 0.05). Eosinophilia appeared connected with recurrent rhinitis (p less than 0.001) relapsing bronchitis (p less than 0.001) relapsing bronchitis (p less than 0.001) asthmatic bronchitis (p less than 0.001) positive results of skin tests to 4 allergens (p less than 0.001) and in rural district also with male sex (p less than 0.05). In industrialized areas, in special way there is a closed relation between respiratory diseases and peripheral blood eosinophils increased. Eosinophilia will be find in relapsing respiratory pathology and it will apply to allergology controls. It could represent an unfavourable element of prognosis foresee the possibility that episodic bronchus-spasms will be frequent in patients with asthmatic syndrome. PMID- 3837203 TI - [Green milk: a contribution to the study of iatrogenic pollution of human milk?]. AB - An heterozygotic beta-thalassemic pregnant woman after a treatment with ferritin produced green milk for many days. Bivalent iron was found in that green human milk. PMID- 3837204 TI - [Evaluation of renal function in congenital cardiopathies in young children]. AB - The authors evaluated some renal functional parameters of 23 children, the ages ranged 1 to 58 weeks; 8 were affected with cyanotic congenital heart disease and 15 with acyanotic forms. They showed the presence, already in this age, of some affections that are quiet similar to those affecting older children with heart disease. They tried to explain the renal functional deficiency in consideration of the literature data also. The authors formed a functional deficiency greater in the cyanotic forms, proportional to the weight deficiency and the same as that described in dystrophic children. They think that this is due to a first year maturational retardation, because of a low trophism of the body, in particular of the kidney. The authors suggest that these patients have to be fed with appropriate caloric-protein diet. PMID- 3837205 TI - [Opsoclonic encephalopathy in childhood (Kinsbourne syndrome)]. AB - Kinsbourne's syndrome (ataxia--opsoclonus--myoclonus) is described. The characteristics of this syndrome are: infections of the upper respiratory tract and enteric system and behavioural disturbances leading to the typical symptomatological triad. Various tests were carried out to determine the presence of neuroblastoma which is often associated (46%) to this syndrome. These tests resulted negative. Differential diagnosis was considered in relation to other conditions which present a characteristic symptomatology similar to Kinsbourne's syndrome. Synthetic ACTH (Synacthen) treatment produced a regression of the clinical symptoms. Based on the examinations carried out, which always resulted negative even after 36 months, and on the drug dependence, the present case was diagnosed as primitive opsoclonus. PMID- 3837206 TI - [Varicocele in childhood]. AB - The Authors analyze 20 cases of left varicocele, treated surgically, in boys from 10 to 16 years with the mean age of 12 years. During the operation a testicular biopsy was carried out alternatively in both testicles, showing, mostly, a growth arrest of the spermatogenesis. A blood sample from the left internal spermatic vein was taken for the measurement of the testosterone. The Authors discuss the results and emphasize an early correction of the varicocele. PMID- 3837207 TI - [Wolf-Hirschhorn syndrome]. AB - We refer about two children with Wolf-Hirschhorn's syndrome or syndrome with partial deletion of short arm of chromosome number 4. The diagnosis was possible with an accurate estimation of phenotype. Cytogenetics examination showed the chromosomal aberration typical for this syndrome. PMID- 3837208 TI - [Presentation of a case of probably primary intestinal tuberculosis with a favorable outcome]. AB - The authors report a case of intestinal tuberculosis observed in a 4 year old child. The more important aspects of the case are its rarity (today the intestinal tuberculosis is uncommon), its differential diagnosis because of prevalence of hematuria over other symptoms, and the favourable results obtained with specific chemotherapy alone. PMID- 3837209 TI - [Conservative treatment of esophageal perforation in the newborn infant. Description of a case]. AB - A case of oesophageal perforation in a newborn is reported. Authors describe the different clinical pictures due to the various sites of perforation. Authors believe that conservative treatment is satisfactory when applied to most oesophageal perforations and operative approach should be employed only in selected cases and after failure of a trial of non-operative treatment. PMID- 3837210 TI - [Long-term subacute sclerosing panencephalitis with sensorial transcortical aphasia. Description of a case]. AB - A 16 year boy with subacute sclerosing panencephalitis in stage 4 is described. Neuropsychological analysis reveal a transcortical sensorial aphasia. Behavior therapies of shaping and fading are proposed. PMID- 3837211 TI - [Hemifacial microsomia. Description of a case with associated rare multiple visceral anomalies]. AB - A case of hemifacial microsomia is reported in association with rare cardiac, lung and laryngeal abnormalities. Our case presents both atrial and ventricular septal defects, hypoplasia of the right lung and of the larynx. This variety of malformations is rarely present in other reported cases. The literature of hemifacial microsomia is reviewed and differential diagnosis is discussed. PMID- 3837212 TI - [Male pseudohermaphroditism]. AB - After a brief recall of male sexual differentiation, main features of different etiopathogenetic forms conditioning male pseudohermaphroditism (MPSH) are considered. Procedures for an early and exact identification are illustrated in order to formulate an appropriate prognosis. Hormonal treatment and corrective surgery are discussed; in case of severe malformations, a gender reassignment may be evaluated. PMID- 3837213 TI - [Anesthesiologic management of surgery in the 1st month of life. Review of the literature and clinical contribution]. AB - This paper reports observations on 160 patients, aged between 1 and 30 days, submitted to general anaesthesia for surgery in the period within 1/1/81 and 31/12/84, at the Pediatric Surgery Department - Vicenza Regional Hospital. First we mentioned the main anatomo-physiological features in newborns, and on the grounds of the most recent bibliography and of our own experience, we propose a general anaesthesia record, as much as possible univocal, still bearing in mind the difficulty of this piece of advice, related to the various neonatal malformations, to the very poor conditions, and sometimes to dramatic emergency. This record as come out to be as much as possible corresponding to the main physiopathological features in newborns and doesn't modify the weak balance in these young patients. PMID- 3837214 TI - [Current therapeutic trends in the oto-mandibular syndrome]. AB - The authors describe the characteristics of oto-mandibular syndrome (hemifacial microsomia), underlining that the knowledge of the craniofacial growth and the analysis of the deformities are necessary for a correct surgical approach. The skeletal abnormalities, and in particular the mandibular deformity, are the first step of treatment, which is begun more and more often before the age of six to minimize the skeletal distortion and to decrease the psychological problems of the child. Nevertheless, several surgical procedures are generally required up to the age of 12-16 to obtain a good symmetry. The reconstruction of the ear is deferred, whenever possible, until the mandibular and zygomatic osseous framework have been established to avoid a location in an unfavorable site. The earliest age of repair is six years. Early correction of macrostomia is needed in order to obtain a functioning and symmetric oral sphincter. The possible deficiency of soft tissues does not always require surgery and is the last step of treatment of hemifacial microsomia. PMID- 3837215 TI - [Sinusitis in children. Personal case study]. AB - The presence of sinusitis has been found out 85 times out of 278 cases of acute relapsing respiratory diseases in children between 4 and 12 years of age. The maxilla sinuses have been those most frequently stricken; the frontal sinuses come next and last at a distance the sphenoidal sinus. A close relationship between the entity of basic respiratory pathology and the presence and seriousness of the sinusitis has been observed. There also seems to be a rather close relationship between the frequency of the presence of sinusitis in children with respiratory pathology either relapsing or chronic and climatic environmental situation. A damp climate with persistent fog together with industrial atmospheric pollution seems to favour the considered pathology in an undisputed way. PMID- 3837216 TI - [Longitudinal evaluation, from 1974 to 1983, of the use of antibiotics in a pediatric emergency unit]. AB - A quantitative and qualitative evaluation of the use of antibiotics in the Paediatrics Emergency Unit of the Children's Hospital in Trieste covering the last ten years has been carried out. The results show an evident and progressive trend towards optimal standards in the therapeutic approach, revealing a marked reduction in the prescription of antibiotics for diseases of definite or presumptive viral origin and the use of first choice antibiotics in almost all of the cases. The promotion of the appropriate use of antibiotic treatment introduced at the Children's Hospital between 1978 and 1979 is apparent. The need for these permanently self-evaluating surveys aimed to assure continuous updating and to maintain optimal therapeutic standards is considered. PMID- 3837217 TI - [Prognostic factors in non-Hodgkin's lymphoma in childhood]. AB - 38 children with Non-Hodgkin Lymphoma (age 15 months - 17 years; 27 males and 11 females) have been treated between 1974 and 1982. They have been divided in two different groups: a Good Prognosis group for patients with complete resectable disease and a Poor Prognosis group including patients with mediastinal, bone marrow or CNS involvement or with diffuse and non completely resectable localization. In the Good Prognosis group there were 100% Complete Remission, 12.5% Local Relapses and 12.5% deaths. 88% of patients are alive at 8 1/2 years follow-up. In the Poor Prognosis group there were 83% Complete Remission, 50% Relapses (8 in the first year, 2 in the second and 5 in the third and no more in the next years) and 60% Deaths; 30% of patients are off-therapy with a survival of 40% at 8 1/2 years follow-up. Among the 19 patients with mediastinal involvement there were 84.2% Complete Remission, 68.4% Relapses, 63.1% Deaths and 26.6% off therapy patients. Among the 19 patients with mediastinal involvement there were 84.2% Complete Remission, 68.4% Relapses, 63.1% Deaths and 26.6% off therapy patients. Survival is 70% for the group without mediastinal involvement and 35% for the group with mediastinal involvement. Burkitt-type Lymphoma has a survival of 30% in contrast to the 60% survival for all the others histological types. In summary we conclude that the distinction between Good Prognosis and Poor Prognosis groups, on the basis of a clinical stage involvement and Burkitt histology have an important role for prognosis of Non-Hodgkin Lymphoma in children. PMID- 3837218 TI - [Influence of 2 different milk formulas on renal tubular function in full- and pre-term newborn infants]. AB - 74 neonates (39 premature and 35 full term) were fed during first week of life on two available formulas: one was adapted and the other a powdered sweetened half skimmed milk. Urinary osmolarity was higher in neonates fed half skimmed milk. The study of blood parameters of renal function showed an higher urea nitrogen and a lower base excess in neonate fed half skimmed milk and in particular in prematures. Renal tubular function studied by means of volume/minute (V/m') of the clearance of free water (CH2O), of the clearance of osmotically active substances (COsm), and of the maximum tubular reabsorption of water (TcH2O), showed an increased clearance of osmotically active substances in both premature and full term neonates fed half skimmed milk and tubular reabsorption of water (TCH2O) in prematures. Such parameters of renal tubular function seem to be sensible indices for evaluating renal solute load of diet. PMID- 3837219 TI - [Fat absorption in the premature newborn infant]. AB - The etiopathogenesis and the clinical implications of fat malabsorption in preterm infants are reviewed. Low pancreatic lipase activity and impaired solubilization of lipids due to low intraluminal concentration of bile salts appear to be the main factors of the inadequate lipid absorption. The compensatory role of intragastric lipolysis could be important. Currently available informations suggest that, chylomicron formation and transport of lipids are not limiting steps, but the efficiency of these processes in neonates needs further investigations. Due to its bile-stimulated lipase activity, non heat-treated human milk used at least in part, appears to be the most effective method to improve fat absorption in the preterm infant. PMID- 3837220 TI - [Schonlein-Henoch syndrome. Clinico-statistical analysis of 60 cases (1978 1984)]. AB - Schonlein-Henoch purpura is a systemic, immunocomplex-mediated vasculitis which involves skin, joints, gastrointestinal and urinary system. This is a retrospective study on 60 S.H.S. admitted in our Division from 1978 to 1984. The most affected age range seems to be included between 2 and 7 years, with a maximum at 6. The Male/Female ratio is 35/25. Clinically we found skin (100%), joint (63%), abdominal (48%), and renal (25%) manifestations. Laboratory data are not characteristic: C3 and C4 are always in the normal range. 27% showed an elevation of IgA, 81% a rise of sedimentation rate and 45% a rise of Anti-O Streptolysin Title. The main problem to face is prevention of glomerulonephritis. Salicylates, piridamol and cyproheptadine have been suggested to be effective. Prednisone is recommended in all cases with abdominal pain in order to prevent surgical complications. In our experience we could not demonstrate any difference between treated and not treated cases. It is important anyway to perform a correct follow-up of these children to early show a possible relapse or a renal complication. PMID- 3837221 TI - [Gastro-esophageal reflux in childhood. When to operate?]. AB - Gastroesophageal reflux has been well described in children as the cause of a variety of symptoms from nutritional to respiratory problems. If the regurgitation and vomiting are very common symptoms in newborns, their persistence after the first months of life will result in pathological entity leading to complications as esophagitis, failure to thrive, respiratory problems. The purpose of this article is to point out the functional and anatomical implications maintaining gastroesophageal reflux in children and the correct indications for surgery. PMID- 3837222 TI - [Monosomy 9p. Clinical and cytogenetic aspects]. AB - The Authors describe a new case of monosomy 9 p in a newborn, confirmed by bands technique. The parents had a normal karyotypes and this alteration was defined as deletion 9 p "de novo" arisen. The main morphological anomalies are described: these anomalies reproduce that reported by others and, for many aspects, remember Down syndrome. It is very important that the staff of the Neonatological Departments has a good knowledge of this syndrome since for the abnormal objective features, the diagnosis is possible already from the birth. PMID- 3837223 TI - [Symptomatic Kimmerle anomaly. Clinical case]. AB - After mentioning the most common forms of vertigo in childhood, the Authors quote a case come into their observation showing anomalies of the Kimmerle symptomatic. PMID- 3837224 TI - [Role of splenectomy in Chediak-Higashi syndrome in its accelerated phase]. AB - Chediak-Higashi (C.H.S.) syndrome is a rare immunodeficiency, due to defective granulocyte activity. The syndrome is characterized by large inclusion bodies in the leukocytes, albinism, photophobia, nystagmus, and recurrent infections. Some patients develop hepatosplenomegaly, lymphadenopathy, pancytopenia and widespread organ infiltrates with mononucleated cells. This phase is called "accelerated (or lymphoma-like syndrome) phase". A 5 years old girl with C.H.S. in accelerated phase received initially medical treatment without improvement. A splenectomy was performed to remove the hypersplenism and the mechanical compression of the spleen on the gut. Few days after the splenectomy the fever and the pancytopenia disappeared. The pathological examination of the spleen showed multiple intraparenchymal abscesses. Unfortunately, six months after the operation, she died after an acute episode of pneumonia, with normal hematological pattern. The splenectomy may play a role in the "accelerated phase" of C.H.S., but new treatments (bone marrow transplantation) are necessary to remove the basic disease. PMID- 3837226 TI - [Results of the surgical treatment of primary obstructive megaureter in the child]. AB - Primary obstructive megaureter (P.O.M.) is a dilatation, different in size, of upper urinary tract without reflux and secondary to a functional obstructive malformation of terminal segment of ureter. Infection and renal function impairment complicate P.O.M. in a rather high percentage of cases. In Authors' experience, in about 22% another urinary malformation and in more than 8% an extraurinary malformation are associated. Authors' experience in the treatment of 119 P.O.M. (102 patients) is reported. 14 P.O.M. (9 patients) were not operated on. In 104 megaureters (92 patients) an ureteric reimplantation with shortening and tailoring without preoperative temporary urinary diversion was carried out. In 4 megaureters a V.U.R. and in another 4 an ureteric stenosis taken place as postoperative complications. In 96 ureters (92.3%) positive results were obtained with normalisation or impressive improvement of upper urinary tract and improvement of renal function. PMID- 3837225 TI - [Kawasaki syndrome. Case report]. AB - The authors relate a case of M.L.S. observed in 1980 and which had successful outcome. They report the most recent proposals about etiology, pathogenesis and therapy, comparing them with the most recent observations concerning this disease and which have been studied and are undergoing diagnostic research all over the world. PMID- 3837227 TI - [The ureterocele in childhood. Type of treatment and results]. AB - Ureterocele is an infrequent urinary malformation in pediatric age, but it is frequently clinically severe. Ureterocele in a duplex pyelo-ureteral system often presents very difficult treatment problems not uniformly dealt with. Authors report their experience with 79 ureteroceles observed in 72 children. 27 children were less than one year old. In the authors experience simple ureterocele with a single collecting system doesn't give any surgical problem. On the contrary ectopic ureterocele, almost always associated with a pyeloureteral duplication, frequently gives some problems of surgical treatment. Treatment is always individualized but in our experience the best results have been achieved with unroofing of the ureterocele and upper heminephroureterectomy in one stage, eventually associated with lower ureteral reimplantation. This treatment can be used successfully in the majority of ectopic ureteroceles in pediatric age. PMID- 3837228 TI - [Primary vesico-uretero-renal reflux. Results of surgical treatment in over 1,100 refluxing ureters]. AB - Primary vesicorenal reflux (P.V.R.R.) is the most important cause in the pathogenesis of chronic pyelonephritis, better known in medical literature as "reflux nephropathy". The Authors stress out the criteria adopted in their Center for surgical treatment of P.V.R.R. and report the results in 1158 refluxing ureters (858 children) operated on. In 5 ureters an ureteronephrectomy and in 1153 remaining ureters and ureteral reimplantation was carried out. About 57% of ureters operated on was affected by severe reflux (IV - V grade). The Authors obtained 98.6% of surgical successes. In 16 ureters operated on, stricture (9 ureters) and reflux (7 ureters) were postoperatively present. The percentage of successes in infants less than 2 years old at operation was 98%. PMID- 3837229 TI - [Hydronephrosis surgically treated in the 1st year of life. Short- and long-term radiologic and functional evaluation]. AB - Hydronephrosis in infancy and childhood is a frequent urinary malformation and is almost always congenital. In over 80% of the cases it is due to ureteropelvic junction obstruction; much less frequently it is due to anomalous renal vessels, sometimes associated to ureteropelvic junction obstruction. In this paper the Authors analyze their experience in the surgical treatment of this urinary malformation. 234 hydronephrosis out of 222 patients were operated on from January 1972 to June 1985. 61 hydronephrosis were operated on in 55 infants under 1 year. Primary nephrectomy was carried out only in 9 of the 234 hydronephrosis operated on (3.9%) and in 3 of the 61 hydronephrosis operated on in infants less than 1 year old (4.9%). All the 55 infants but one showed a significant radiological improvement after pyeloplasty. 28 infants but one showed a significant radiological improvement after pyeloplasty. 28 infants for a total of 30 hydronephrosis had a glomerular filtration rate determination during sequential scan for individual kidney function assessment. 90% of the kidneys operated on showed a normal or slightly reduced glomerular filtration rate. Recent advances in prenatal echographic diagnosis and relationship between obstructive uropathy, renal development and pulmonary hypoplasia are discussed. The Authors stress out the importance of early diagnosis to improve surgical results. PMID- 3837230 TI - [Long=term evaluation of renal damage in primary vesico-renal reflux after corrective surgery]. AB - Traditionally 3 mechanisms are responsible for the development of renal damage when primary vesico-renal reflux is present: reflux is a manifestation of abnormal embryological development of the ureteral bud, with subsequent dysplasia; sterile reflux damages the kidney, perhaps trough a mechanical or/and an immunological mechanism; renal damage occurs as a result of the reflux of infected urine into susceptible renal papilla (intrarenal reflux). Whatever the mechanism, it is apparent that reflux and renal damage are intimately related. It does appear that for the most part damage is done at an early age. Operative repair of vesico-renal reflux has been advocated as a reliable method to stop reflux, with attendant cessation of renal damage and improvement in renal function. However some recent prospective study found that the rate of continued renal scarring is independent of medical or surgical therapy. The aim of the present paper is to study the functional and radiological long-term results after successful antireflux surgery (mean follow-up 6 years 4/12). 90 patients for a total of 140 refluxing ureters were studied for assessment of urinary infection, blood pressure and renal function. 40 patients for a total of 62 refluxing ureters were evaluated for determination of renal parameters evolution. At follow up from 3 to 14 years (mean 6 4/12 years), less than 10% of the patients showed pathological bacteriuria generally without episodes of acute pyelonephritis. Hypertension was present in 4 (4.4%) out of 90 patients, aged from 14 to 18 years. There was a significant improvement in renal function after operation, especially in infants operated on in the first two years of life. The postoperative radiological study showed a growing of affected kidneys in about 89%. In almost 47%, the affected kidneys showed an increased growth. Only about the 5% of the kidneys showed a decreased development with a final evolution toward a small pyelonephritic kidney. The best results were obtained in patients operated on very early in the life. Our greatest challenge is to prevent the early destruction of nephrons. This means an early diagnosis of urinary tract infection and detection of vesico-renal reflux with an early treatment. The administration of prophylactic antibiotics and, when indicated, an early surgical treatment can minimize, in our opinion, the magnitude of renal damage for the most part of patients. PMID- 3837231 TI - [Posterior urethral valves. Type of treatment and short- and long-term evaluation of renal function]. AB - In this paper the authors have analyzed the management and the outcome of 81 cases of posterior urethral valves which occurred during the period January 1972 April 1985. 53 children presented very severe urethral valves (grade 4 according to Hendren), 28 mild valve type. All the children of the first group but two had a dilatation of the U.U.T. Vesico-renal reflux, usually severe, was present in 51 ureters; in another 50 ureters a dilatation without reflux was present. 47% of the children of the first group had a renal function within the limits of normality at the moment of presentation and the remaining 53% a reduced renal function. In 9 patients (8 under 50 days of age) a cutaneous vesicostomy according to Blocksom followed, at the age of 10-18 months, by transurethral valve destruction was done. In 6 infants, in the early part of the series, the valve was removed with a hook via the perineal approach. In 38 patients we performed a transurethral valve destruction with the n. 3 Bugbee electrode. 36 out of 53 children (68%) had exclusively a removal of the valvular obstruction. After the removal of the obstruction, 32 out of 37 non refluxing dilated ureters (86.5%) showed a clear improvement. In 7 out of 29 refluxing ureters a nephrectomy was carried out. In the remaining 22 ureters the reflux vanished in 17 and improved in the other 5. 17 children had other types of operations after valvular removal. 23 ureters in 13 patients were reimplanted, with 3 failures (13%). In the 53 children with very severe valve (grade 4) supravesical diversions were not carried out. In the follow-up of 51 children (from 6 month to about 14 years) the renal function was within the limits of normality in 74% (before the operation it was 47%). The best results were obtained in children diagnosed and treated in the first months of life. Cutaneous vesicostomy showed itself to be a very useful method of treatment in very young babies with severe complications. We observed a slight terminal urethral stricture, easily dilatable, in only 1 child. All the children over the age of 12-13 years were continent. In 28 children with mild valves, as well as transurethral valve destruction, an ureteric reimplantation was carried out with success in 5 children (8 ureters) and a vesical diverticulectomy in another 2. PMID- 3837232 TI - [Urodynamic study of the lower urinary tract in children today]. AB - The urodynamic study of the lower urinary tract is the only investigation that permits an evaluation of the vesico-sphincter function. On the ground of the personal experience of 3262 urodynamic study on 1221 children, the authors are reviewed the methods, indications, limits and pitfalls of urodynamics and synchronous video-flow-cystourethrography. Indications in the personal experience are: neuropathic bladder; non neuropathic vesico-urethral dysfunction; urinary incontinence; intravesical obstruction; recurrent cystitis; vesico-uretero-renal reflux and obstructive megaureter; nocturnal enuresis. Informations given by urodynamics in these pathologic conditions are very important for the diagnosis, prognosis and therapy. The urodynamic study is a very reliable and useful method, also in pediatric age, if correctly performed by expert investigators. PMID- 3837233 TI - [Proposed functional classification of urination disorders of a neurologic nature in children]. AB - It is absolutely necessary for all individuals engaged in the care of pediatric patients with neurogenic voiding dysfunction to have a useful means of categorizing the patient's problems. Actually the most accepted classifications are the "urodynamic" proposed by Krane and Siroky and the "functional" proposed by Wein. These Authors present two different approaches to accomplishing the same purpose: namely, directing the appropriate therapy for the patient's problems. In the authors opinion, from a diagnostic and therapeutic standpoints, a working understanding of both of these classifications seems advisable. In this paper the authors present a functional-urodynamic classification of neurologic voiding dysfunctions in pediatric age, clinically and therapeutically useful. PMID- 3837234 TI - [Neuropathic bladder in childhood. Treatment of the complications and prevention]. AB - We treated 91 children with neuropathic bladder and 141 refluxing ureters in an attempt to eliminate or ameliorate reflux and preserve renal function. The reflux was 1 and 2 degree in 48 ureters and 3 and 4 degree in 93 according to the classification of Dwoskin and Perlmutter. In the lower degree refluxes we preferred a conservative treatment with intermittent vesical catheterization, appropriate drug use and, much less frequently, transurethral external sphincterotomy. The reflux disappeared in 11 ureters in intermittent vesical catheterization and improved in an additional 17 ureters; in these cases the presence of bacteriuria without clinical significance and renal deterioration was rather common. In the severe refluxes, often associated with recurrent serious episodes of infection and renal damage, we preferred surgical treatment. All together, we performed 49 ureteral reimplantation, 15 transuretero-ureterostomy, 9 cutaneous vesicostomy (18 ureters), 1 bladder augmentation plus sphincterotomy (2 ureters) and 4 urinary diversions (7 ureters). Our primary differentiated approach resulted in cure in 83 ureters (58.9%) and in improvement of the reflux without renal deterioration in an additional 43 ureters (30.5%); failures were present in 15 ureters (10.5%). In our opinion the approach to management of upper urinary tract dilatation without reflux should be more conservative (78 dilated ureters in 46 patients). In these cases it is very important to lower, with conservative measures, the vesical pressure. When this treatment is unsuccessful, a cutaneous vesicostomy or bladder augmentation or a transureteroureterostomy in unilateral cases should be considered.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837235 TI - [Urinary incontinence in the neuropathic bladder in children. Treatment using an artificial urinary sphincter]. AB - The neurogenic urinary incontinence can be successfully managed by implantation of an artificial urinary sphincter. The most important requirement for implantation is the recognition that the patient has failed to respond to well accepted conservative measures or is an unsuitable candidate for such conservative measures. It is necessary to rule out the presence of detrusor hyperreflexia or to show that, if it exists, hyperreflexia can be easily pharmacologically controlled. At the same time the bladder's capability for storage of urine must be "adequate" and the vesical compliance normal or only slightly reduced. The bladder emptying should be unobstructed, without residual urine. The patient must be psychologically motivated and able to utilize the artificial sphincter intelligently. The upper urinary tract should be either normal or stable, preferable with no evidence of vesicorenal reflux. Finally, according to the authors, the patient should be more than 11 years old. In the author's opinion these are the ideal candidates for sphincter implantation. The authors operated on 25 patients with neurogenic urinary incontinence, aged from 13 to 19; 23 were males and 2 females. All the male patient had preoperative transurethral external sphincterotomy. In the first 2 cases we applied model AS 792; both these sphincters were substituted with the last model AS 800. In the other 23 cases model AS 800 was used. The cuff was always placed at the bladder neck and only in 1 case, with a previous operation on the neck, at the urethral bulb. Obviously in this late case, the lower pressure balloon was chosen. In all cases primary deactivation was performed; the sphincter was activated after about 3 weeks.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837236 TI - [Antibiotic therapy in bronchopulmonary diseases in children]. AB - With a wide-spectrum antibiotic the results obtained are not as satisfactory as those obtained with an aimed antibiotic therapy. It is for this reason that a physician must always keep up to date on all the antibiotics and their field of action. Apart the antituberculosis drugs we can currently count on three large families, the penicillins, the cephalosporins, the aminoglycosides, and on a polymorph group made up of erythromycin, chloramphenicol, vancomycin and trimethoprim-sulfamethoxazole (TMP-SMZ). Of all the lung diseases, pneumoniae is without doubt the disease in which the choice of the antibiotic is most difficult and also most determinant. Using a scheme made up of three successive stages could be useful. In the first stage we exploit our knowledge of the prevalence of certain infectious agents in single age group. In the first two months of life gram negative rods, B and D Streptococci and Pneumococcus are the most probable agents, therefore an association of ampicillin and aminoglycoside is recommended. In the pre-school age we find a predominance of Haemophilus influenzae and Pneumococcus and therefore the antibiotic of choice is amoxicillin. In the school age there remains only the Pneumococcus so that the first choice antibiotic is now penicillin. All of this is true for those clinical situations that do not present peculiar characteristics. When this is not the case, we pass on to the second stage which consists of suspecting, on the basis of clinical and instrumental data, of a certain etiologic agent and in choosing an appropriate antibiotic.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837237 TI - [Biofeedback technic in incontinence in high ano-rectal atresia]. AB - Authors have employed biofeedback in functional rehabilitation of fecal incontinence after surgical treatment of high anorectal atresia. 34 patients have treated with that technique, of whom 27 underwent an levator plasty and 7 a muscular transplant procedure using a gracilis sling. A four channels Recording connected with a Arhan catheter and a TV-monitor visible to the patient have been employed. After a period of time variable from case to case, all patients of the "levator plasty" group prolonged the "alert-time" to a socially acceptable value, and all the patients of the "gracilis transplant" group obtained a complete fecal continence. PMID- 3837238 TI - [Advantages of a permanent venous access in children treated for cancer. Preliminary results]. AB - Current therapy for children with cancer includes a variety of invasive procedures many of which require repeated venous access over a considerable period of time. Such procedures are poorly tolerated by children and by their veins. Recently it has become possible to undertake the majority of such procedures by means of permanent indwelling silastic catheters improving the quality of life of the children and their parents and increasing the scope of therapeutic intervention. In the period July '83 - August '84 we have used 46 of these catheters in 45 children with malignant disease, 12 with acute myeloid leukaemia, 12 with neuroblastoma, 7 with B cell leukaemia-lymphoma, 6 with rhabdomyosarcomas, 2 with Ewing's Sarcoma, 2 with Wilms' tumor and 1 case each of Hodgkin's disease, teratocarcinoma, osteosarcoma and juvenile chronic myeloid leukaemia. The children's ages ranged from 2 months to 14 years; 22 were male and 23 female. The catheters were inserted under general anaesthesia (duration 20-40 minutes) usually without difficulty, except for a single patient in whom no suitable vein could be found. No complications connected with the placement of the catheter were observed. Subsequent management of the catheter was initially complicated and time-consuming, but was subsequently simplified so that acceptance by parents, children and nursing staff was eventually excellent. The duration of use of 46 catheters ranges from 7 to 350+ days; 24 catheters are presently in use at 30-350+ days from insertion. Eight children died as a result of disease progression and two of sepsis with the catheter in place.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837239 TI - [Variability of arterial blood pressure readings in children following repeated measurements]. AB - The procedures for measuring the blood pressure cause emotional reactions, which in turn influence, in a manner which is not to be disregarded, the blood pressure values. In order to evaluate the degree and type of such influence the blood pressure was determined for 3 consecutive days by the same doctor using the same technique in 242 children (150 boys and 92 girls) of a primary school in Bari. The systolic and diastolic values obtained allowed us to categorize the children in to 3 groups in accordance with their individual reactions on occasion of the second and third determination: a) children whose blood pressure went down; b) children whose blood pressure went up; c) children whose blood pressure remained unchanged. The differences of the values obtained between the first and third determination were the most evident; in particular, the PAs had an average reduction of 11.3 mmHg in 68.6% of the subjects, an average increase of 7.7 mmHg in 14.9%, whereas in the remaining 16.5% was unchanged. The PAd had un average reduction of 9.5 mmHg in 51%, an average increase of 7.6 mmHg in 19% and the remaining 30% was unchanged. The heart rate shows a statistically significant reduction of about 4 beats/min. between the first and subsequent determinations, and it is connected with the blood pressure. No correlation was found with the PAd. The variable reactions as a consequence of the repeated determinations could cause an error not to be disregarded, in view of the results obtained from the programs concerning the screening of the PA and of the identification of normal values age related.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837240 TI - [Bronchiolitis. Our clinical experience in the 4 years from 1981 to 1984]. AB - The clinical experience of 661 children with bronchiolitis is reported in four years period to gain a better understanding of diagnosis and pathogenesis of bronchiolitis. Upper airways infections, expiratory dyspnea, clear sound by chest percussion, vesicular rales and whistling by chest auscultation, air trapping on the chest radiography were considered as essential data of diagnosis. It was found in 595 patients: expiratory dyspnea, air trapping, vesicular r. and whistling in 85% and whistling only in 15%; hypoxemia in 20% combined with hypercapnic acidosis in 10%; normoxemia in 80% combined with hypocapnia in 54%; hyperlactemia in 64% combined with an increment in the serum of CPK in 50% and of GPT in 30%; virus were cultured in 27%, adenovirus and RSV were identified in 90%. Instead it was found in 66 patients: air trapping but no difficult breath, with normal chest auscultation; crisis of cyanosis or paleness-cyanosis chilly sweat in 80% were motive of admission. The clinical and/or radiological features of "air trapping" were considered as essential symptoms and signs of bronchiolitis. The insufficient systemic perfusion was considered as a frequent occurrence and as cause for sudden respiratory and circulatory emergency. PMID- 3837241 TI - [Aspects and behavior of x-ray computed tomographic studies in subacute sclerosing panencephalitis]. AB - The authors reports cerebral Computerized Axial Tomography findings examined, in association with other diagnostic tests, in 5 cases of Subacute Sclerosing Panencephalitis in the acute phase and repeated in 2 of these patients later, during the state and terminal phases of the disease. Hypodensity of the white matter was the main sign of initial cerebral parenchymal involvement and an atrophic aspect was most indicative of the terminal phase. Moreover, it has been shown that associated with clinical symptomatology, immunologic data and EEG signs, cerebral Computerized Axial Tomography may offer the possibility for evaluating the nature and the evolutive stage of the disease and facilitate differential diagnosis from other degenerative encephalopathies. PMID- 3837242 TI - [Immunostimulating therapy in chronic non-specific diarrhea]. AB - The authors describe 9 children affect by chronic aspecific diarrhea treated with levamisole; the drug was effective in reducing diarrhea episodes during the period of administration in respect to the untreated group. Follow-up of 3-5 months did not show auxological or nutritional differences in the two groups. PMID- 3837243 TI - [Endoscopic study in the diagnosis of nodular lymphoid hyperplasia of the colon in childhood]. AB - Colonic lymphoid hyperplasia has been diagnosed in 10 children, aged from 11 months to 12 years, with heterogeneous clinical symptoms such as rectal bleeding, abdominal pain, chronic diarrhea and constipation. The Authors underline the value of endoscopy in the diagnosis of colonic lymphoid hyperplasia which also permitted to exclude other colonic diseases often misdiagnosed by double contrast barium enema (familial polyposis, lymphoid polyps, Crohn's disease, Ulcerative colitis). In This study the Authors discuss the probable etiopathogenetic mechanisms and the prognosis of colonic lymphoid hyperplasia: it should be considered as a benign conditions reflecting a non-specific response to different stimuli. PMID- 3837244 TI - [Effectiveness of piperacillin in childhood infections]. AB - Piperacillin is a semisynthetic penicillin with a broad-spectrum: in particular it is active against Gram positive, Gram negative, aerobic and anaerobic bacteria often resistant to other antibiotics of the same group. We report a trial carried out on 38 children with severe and moderate infections treated with piperacillin. We have considered ESR, all leucocytes count and body temperature. No severe side effects have been reported. Piperacillin must be used as a first choice in pediatric age, mostly in case of mixed bacterial infections and in immunocompromised patients. PMID- 3837245 TI - [Clinical study on the efficacy of a sustained-release theophylline-based preparation in infants with chronic asthma]. AB - Authors describe 9 infants aged between 3 and 17 months, affected by recurrent episodes of bronchial asthma (at least one crises even month for three following months) and treated with sustained-release theophylline. During the 6 months of follow-up a total of 8 episodes of bronchial asthma in 7 subjects were observed. Seven out of 8 of these episodes occurred during the period of suspension of the therapy with the sustained-release theophylline. In each subjects, after 6 hours from the drug administration on average of 4-8 determinations of the theophylline blood levels were performed. More than 70 percent of the theophylline blood values has been found within the normal therapeutic range (6-20 micrograms/ml). PMID- 3837246 TI - [2 cases of Potter's syndrome]. AB - In this report, we describe two patients with Potter's syndrome classical signs and take the opportunity to discuss about the etiopathogenetic hypothesis concerning various phenotypical expressions of that syndrome. PMID- 3837247 TI - [Surgical treatment of the complications of arteriovenous fistulas in childhood. On 2 unusual cases]. AB - The AA describe two particular complications of arteriovenous fistula for chronic hemodialysis in pediatric age: a king king and a stenosis. In these cases are necessary angiographic studies of the vessels and then, if it is possible, the AA prefer a surgical repair of the same arteriovenous fistula. The other alternatives in these cases are an extensive patch, a new angioaccess or a percutaneous transluminal angioplasty. PMID- 3837248 TI - [Sympathomimetic drugs in the newborn infant]. AB - In newborn infants with compromised clinical conditions, it is frequently necessary to improve the perfusion of the vital organs, and the choice often falls on sympathomimetic drugs. However their appropriate use is still discussed and the difference of the opinions about their choice is partially due to scarcity of controlled clinical studies. The purpose of this study is to supply, on the basis of the present knowledges, the opportunity of a rational choice and use of the sympathomimetic drugs in the neonate. The Authors consider the development of the cardiovascular sympathetic innervation and the different responsiveness to sympathomimetic drugs of the human foetus, compared to those of the animal foetuses. Then they discuss the pharmacological characteristics of some of the most important sympathomimetic drugs: adrenaline, isoproterenol, dopamine, dobutamine, indicating choice, and clinical use of them. PMID- 3837249 TI - [Pharmacokinetics of oral theophylline. Comparison between asthmatic and cystic fibrosis patients]. AB - The pharmacokinetics of oral theophylline at steady-state were comparatively investigated in 13 asthmatic patients and in 10 patients with cystic fibrosis (CF). In all patients, the drug was administered twice daily as slow-release tablets. The total daily dose of theophylline ranged from 10.8 to 29.4 mg/kg/day. For each patient, the time-course of theophylline steady-state plasma levels was studied after the morning dose. Six serial plasma samples were drawn at 0, 2, 4, 6, 8, and 12 h after dosing. Model-independent methods were used for calculating the pharmacokinetics parameters (area under the curve and clearance). The clearance values (mean +/- SD) calculated in the two patient groups were significantly different (asthmatic patients: clearance = 61.2 +/- 15.6 ml/h/kg; CF patients: clearance = 86.3 +/- 22.8 ml/h/kg; P = 0.007). It has previously been shown that the clearance of theophylline after single dose is increased in CF patients. Our study confirms this finding under steady-state conditions and demonstrates that higher theophylline doses are on the average required to treat patients with FC. PMID- 3837250 TI - [Cardiac arrhythmias and mitral valve prolapse in childhood. Therapeutic considerations]. AB - Our report concerns 18 cases of mitral valve prolapse, all documented by M-mode and D2-mode echocardiographic study. Of these patients three presented severe cardiac arrhythmias and therefore therapeutic treatment was necessary. One of them presented repeated episodes of paroxysmal supraventricular tachycardia and premature supraventricular and ventricular contractions. In another the arrhythmia consisted of numerous ventricular premature contractions. The third presented a sinus tachycardia which necessitated pharmacological treatment. In this study we have examined several forms of arrhythmias associated with mitral valve prolapse and discussed the antiarrhythmic therapy with quinidine, verapamil, amiodarone and propranolol. Since most people with mitral valve prolapse are young, arrhythmia suppression therapy might subject them to a course of treatment for possibly several decades. Therefore, the physician must weigh the risk of antiarrhythmic therapy against the risk of morbidity without therapy in each individual patient. PMID- 3837251 TI - [New methods for audiometric evaluation in childhood]. AB - Impaired speech learning, mental retardation and alterations of affectivity and behaviour may be the consequences of profound neonatal deafness. The authors emphasize the importance of detecting the newborns at audiological risk and screening the neonates in order to get an early diagnosis and treatment of the affection, at least within the first year of life, to avoid or reduce the consequences of hearing loss; then they describe the procedure commonly in use at present for neonatal hearing screening and a number of available different diagnostic tools (electrodermal audiometry, heart rate audiometry--with the possibility of autoregressive analysis--respiration audiometry, autoregressive analysis of EEG, acoustic impedance measurements with study of the acoustic reflex, auditory response cradle which is also named CRIB-O-GRAM). PMID- 3837252 TI - [Thrombophlebitis of the cavernous sinus and inappropriate ADH secretion syndrome]. AB - The septic thrombosis of the cavernous sinus is a rare and serious disease which still occurs occasionally. The physician should be aware of this fact when treating infections of the nasal orbital areas. A case is presented in whom the septic thrombosis of the cavernous sinus is associated with the syndrome of inappropriate secretion of antidiuretic hormone. PMID- 3837253 TI - [Spondylocostal dysostosis]. AB - A case with spondylocostal dysostosis is reported. The Authors emphasize the different prognosis of the autosomal recessive form in comparison with the autosomal dominant one. The association between pericentric inversion of chromosome 9 and this dysplasia is discussed. PMID- 3837254 TI - [Nifedipine in hypertensive emergencies in children]. AB - Nifedipine is a calcium-antagonist whose principal action is reduction of peripheral resistance. The utilization of nifedipine is still limited in infancy. We have studied the immediate effect on hypertensive blood pressure values of nifedipine administered sublingually in 10 children (3 males and 7 females; aged 6-14 years) with different clinical diagnoses: acute glomerulonephritis (6 cases), lupus erythematosus systemicus (2 cases), membrane proliferative glomerulonephritis (1 case), pyelonephritis secondary to vesico-ureteral reflux (1 case). Nifedipine (0.25-0.50 mg/Kg) lowered systolic and diastolic blood pressure values from 167.5 +/- 19.8 mmHg and 103.5 +/- 18.4 mmHg to 126 +/- 19.8 mmHg and 81.5 +/- 15.1 mmHg, respectively, 30 minutes after administration (p less than 0.001). We propose nifedipine as a simple, effective and safe alternative drug for managing hypertensive emergencies in childhood. PMID- 3837255 TI - [Ototoxicity following the administration of high doses of cisplatin in children with malignant neoplasms]. AB - CDDP is an antitumor agent which has shown effectiveness in a variety of pediatric and adult solid tumors. Main toxic effects of CDDP involve kidney, bone marrow and ear functions. Recently, CDDP has been used at "high doses" (200 mg/sq m, compared with 90-100 mg/sq m used previously) on the basis of its dose dependent antitumor activity. Ear toxicity might be higher with the "high doses" schedule, and this could be of much importance for younger patients, due the irreversibility of the lesion induced by the drug on the ear structure. In this study, the Authors have prospectively evaluated the ear function in children undergoing treatment with "high doses" CDDP and have compared it with that determined by the drug administered at "traditional" doses. Between september 1984 and march 1985, ten children aged 3-10 years, affected by tumors either resistant to first line therapy or at relapse, were treated with CDDP, 200 mg/sq m divided in five daily doses (days 2-6) (Vincristine, 2 mg/sq m and Cyclophosphamide, 600 mg/sq m, were given on day 1). Six out of ten children had been previously treated with CDDP at "traditional" doses. Acoustic function has been evaluated with tonal audiometry performed before therapy, 2 and 15 days after each cycle of therapy. A deficit was scored mild for levels between 15 and 30 dB, medium for levels between 30 and 60 dB, severe for levels greater than 60 dB. The Audiometry performed in six children who had previously been treated with CDDP at "traditional doses" demonstrated a deficit limited at 8000 Hz in five of them.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837256 TI - [Chronic gastritis in childhood. A possible cause of recurrent abdominal pain]. AB - The peptic disease is not the commonest cause of recurrent abdominal pain, among the organic aetiology. Only recently the gastric disease as cause of abdominal pain has been described in pediatric age. We have studied 11 children aged 6 to 12 years, who were examined for recurrent abdominal pain. We found that this symptom was due to chronic gastritis. We have valued these patients on the basis of the clinical manifestations, endoscopic and biopsy findings. A family history of peptic disease was found to be highly significant. We can therefore consider the gastritis as a possible organic aetiology of recurrent abdominal pain after ruling out any other organic causes. PMID- 3837257 TI - [Juvenile intestinal polyposis. Importance of the endoscopic diagnostic contribution]. AB - We describe three cases of juvenile intestinal polyposis in children aged 9-13 years. Ulcerative colitis in two of them and Crohn's disease in one of them were initially diagnosed. These subjects came to us for symptom persistence in spite of medical (sulfasalazine and or corticosteroids) and dietetic therapy. Further an appropriate investigations were therefore necessary; endoscopy and histological study of the specimen drawn by fibroscopy were decisive for the diagnosis. The accuracy of the endoscopy is of valuable help in uncertain situations as in those described. PMID- 3837258 TI - [Caudal anesthesia for hypospadias operations in children]. AB - Bupivacaine induced caudal block as unique anaesthetic procedure in 80 children who underwent surgical correction of hypospadias, resulted of great efficacy and easy employment. Furthermore, the method permitted to avoid intubation and the use of general anaesthetic drugs with their relative complications and provided a great postoperative analgesia. PMID- 3837259 TI - [Ketotifen in the treatment of pediatric atopic eczema]. AB - Clinical effectiveness of ketotifen was evaluated in 15 children, aged 1-3 years, affected by atopic eczema likely due to food allergy. The study, lasting 15 weeks, was divided, according to the protocol, as follow: week run-in period with a restrictive diet; 8 week ketotifen therapy (the first 2 weeks with restrictive diet and the following 6 with free diet); 4 week follow-up phase with free diet. The adherence to treatment was complete in 11 patients; in 6 children symptomatology disappeared, 4 patients had fair improvement. The drug lasted only partially for a maximum 2 week period following the withdrawal. Side-effects (vomiting, enuresis, night restlessness) were moderate, short lasting and did not require the interruption of the protocol. Moreover, a mean 1 kg body weight increase was noticed. PMID- 3837260 TI - Macroscopic hematuria associated with neonatal adrenal hemorrhage. AB - We report an unusual case of right adrenal hemorrhage in which none of the clinical or familiar factors commonly associated with this situation were present. Diagnosis was made after sudden macroscopic hematuria, and was based on clinical and radiologic findings alone. The normal course of adrenal hemorrhage is also discussed. PMID- 3837261 TI - [Neurogenic hypernatremia with adipsia and cerebral malformations in a child with ectrodactyly-ectodermal dysplasia-cleft lip-palate syndrome]. AB - An infant with E.E.C. Syndrome (a genetic condition characterized by: Ectrodactyly, Ectodermal dysplasia, Cleft Lip-Palate) and delayed psychomotor development was found to have chronic hypernatremia and absence of thirst. Computerized brain tomography revealed abnormal lateral ventricles, agenesis of corpus callosum, calcified cortex. His plasma Anti Diuretic Hormone (ADH) levels were inappropriately low relative to his high values of plasma osmolality, whereas ADH responsiveness to nonosmotic stimuli was normal. E.E.C. Syndrome in this baby is characterized by: ectrodactyly of the feet, syndactyly of the 3rd and 4th finger of the hands, bilateral cleft lip and cleft palate, bilateral microtia, lacrimal ductular stenosis. To our knowledge, this is the first report of a case of chronic hypernatremia in conjunction with normal ADH stores, congenital abnormalities of brain structures, and E.E.C. syndrome. PMID- 3837262 TI - [A rare cervico-facial teratoma in a newborn female infant]. AB - The Authors report a case of a rare and very voluminous teratoma with uncommon location (the right cervico-facial region) and extracranial seat in a female newborn. The teratoma was excised in the 18th day of life. It showed cystic and solid lesions. The tissues were derived from the three germ layers and were prevalently mature; only a bit of them was represented by embryonic mesenchymal tissue. The baby, followed and checked up during all the first year of her life, showed a normal evolution and absence of recurrences. PMID- 3837263 TI - [The psychiatric patient's role--a method of measurement]. PMID- 3837264 TI - [Socioeconomic status of patients of the Mental Health Clinic in Ciechanow receiving active care in 1981]. PMID- 3837265 TI - [Problems of neurotic disorders in children aged 7-12 years hospitalized at the Institute of Mental Hygiene, Military Medical Academy, 1967-1981]. PMID- 3837266 TI - [Viral encephalitis as an etioepigenetic complication. Diagnostic difficulties]. PMID- 3837267 TI - Strike and stress in a maximum security hospital. PMID- 3837268 TI - Sex between psychiatric inpatients. AB - This report reviews the literature on the subject of sexual activity between psychiatric inpatients. The author discusses the psychological reasons why patients engage in sexual activity as well as the possible psychological effects. In addition, the author discusses medical considerations including concerns about injury, pregnancy, and venereal disease and legal implications including issues related to wrongful life, wrongful birth and deteriorating mental condition resulting from sexual activity. The report also discusses ethical issues, staff attitudes and various options for management of sexual activity between patients. PMID- 3837269 TI - Milieu concepts for short term hospital treatment of borderline patients. AB - In contrast to the extensive literature on the outpatient treatment of the borderline patient, there exists only a handful of articles which address the complexities of hospital treatment. This paper will focus on aspects of the milieu for short term (less than three months) length of stay hospital treatment. PMID- 3837270 TI - Psychic distress and the psychotherapy of convicts: an essay in applied psychoanalysis. PMID- 3837271 TI - The long-term outcome of unresolved grief: an example. PMID- 3837272 TI - Constructing an efficient inpatient incident reporting system. AB - The NYS Office of Mental Health invests significant staff resources in documenting, investigating, and reviewing minor incidents. This process generates an enormous amount of paperwork. A study by the NYS Commission on Quality of Care revealed that this investment, in fact, compromised the intended positive outcomes. A major flaw they cited was the requirement for identical reporting procedures for both major and minor incidents. A logging system for reporting minor incidents was developed and pilot tested in three OMH psychiatric hospitals. The study revealed that utilization of a log system for the reporting of minor incidents greatly reduced paperwork and staff time, and that these reductions were accomplished without detriment to the quality of care. In fact, the quality of patient care may have improved. More incidents were being reported, a stable record was available on wards for clinical review, staff were enthusiastic about the log system, perhaps improving their morale, and direct care staff had more time available to spend with patients. This type of logging system for the reporting of minor incidents would appear applicable to practically all inpatient psychiatric settings, and, if employed as intended, could be expected to contribute to an improved quality of patient care. PMID- 3837273 TI - Pedophilia: an update on theory and practice. AB - The number of sexual attacks on children is staggering, yet it is extremely difficult to understand what effective treatments are available for the pedophile by reviewing the literature. Therefore, the authors present an update of the changing conceptualizations regarding the offenders and their victims. An overview of the currently used modalities to treat the pedophile is presented with emphasis on the promising cognitive-behavioral approach. A brief description of this approach is given with two case illustrations. PMID- 3837274 TI - Latent thematic concordancy in psychotherapy sessions. AB - In a single case study of a psychoanalytically oriented treatment, the associative distance between patient and therapist concerning the subject of the session was rated. This distance was operationalized by the so-called 'latent thematic concordancy' (LCON) and measured after each session. With the aid of a modified form of the 'therapy session check sheet' (TSCS) of Graff and Luborsky, a constellation of low manifest and low positive transference together with high resistance was isolated which was linked with low LCON with a high prediction rate. This transference constellation resembles the resistance against transference as described by Gill. It seems to be related to a great distance between the associations of patient and therapist concerning the subject of therapy sessions. PMID- 3837275 TI - False patients/real patients: a spectrum of disease presentation. AB - This paper presents a synthesis of varying frameworks and value systems in which all patients are viewed by clinicians. A gradient of behaviors is arrayed which places disease simulation (Munchausen syndrome, malingering) at one end of a spectrum, with the other end anchored by 'real' disease. Between these two polarized opposites are placed the patients with 'psychological' origins to somatic presentations. These patients often called 'crocks' are somewhat different from those patients who present with disease simulation. Such patients are often referred to as 'crooks' in that they are absolutely false in their presentation and aware of such deception. The advantage of this particular schema is that it presents a gradient of behavior instead of isolated categorization. As such it is much more easily understood and used by clinicians and it presents the 'normal' and 'abnormal' within a single conceptual gradient instead of discreet categories. PMID- 3837276 TI - Risk factors in childhood epilepsy. AB - Seizure frequency, seizure type and the associated presence of learning disabilities contribute to the heightened psychiatric risk noted in childhood epilepsy. Each of these factors demands some modification in the treatment program. Psychoeducational components of traditional psychodynamic therapy are highlighted; stress reduction programs need to be implemented and ongoing grief work for child and family managed. Specific educational plans for the treatment of learning disabilities should be formulated in order to decrease their impact on the child's self-esteem. Where learning disabilities and attentional disorders coexist, both stimulant medication and behavior modification techniques are warranted. PMID- 3837278 TI - Factors influencing treatment utilization in African psychotherapy. AB - Two hundred subjects, 100 each from urban and rural areas of a Nigerian ethnic group were administered questionnaires and given interviews to determine variables shaping their preferred mode of treatment between traditional and Western forms of psychotherapy. Education was found to play an insignificant role among the present subjects as the educated literate subjects continue to indicate considerable interest for traditional treatment. Location was shown to have a significant effect on the treatment choice made by the subjects especially among the rural subjects. The implications of these findings for treatment provision are discussed. PMID- 3837277 TI - Toward the development of a new self-report alexithymia scale. AB - Addressing methodological problems in the development of existing scales for measuring alexithymia, this study reports the development of a new self-report scale. The Toronto Alexithymia Scale (TAS) was devised with concern for theoretical congruence with the alexithymia construct, independence of social desirability response bias, and internal consistency. Initially, 41 items were administered to 542 college students. Twenty-six items meeting preestablished psychometric guidelines were retained. Factor analysis yielded four interpretable factors, all consistent with the construct. The scale demonstrated adequate split half and test-retest reliability, and scores were not significantly associated with age, education, and socioeconomic status. These preliminary results suggest that the TAS may be used as a clinical screening device with psychiatric and general medical patient populations. PMID- 3837279 TI - Early dropouts in brief dynamic psychotherapy. AB - Brief dynamic psychotherapy at the Psychiatric Clinic of Athens University follows the approach of Malan and Sifneos and the selection criteria proposed by Davanloo. The early dropout phenomenon was studied in 24 therapies, in relation to variables included in the selection criteria. The statistical analysis was based on discriminant analysis. A high final score, early transference confrontation, circumscribed problem of the patient, high motivation for treatment and existence of crisis were strongly associated with continuation of brief psychotherapy. PMID- 3837280 TI - [Evaluation of rifampicin-isoniazid treatment in tuberculous meningitis]. PMID- 3837281 TI - [Capacity for the elimination of parasitic helminths of a stabilization pond in Santo Tomas Atzingo, Mexico State]. PMID- 3837282 TI - [Fascioliasis in the State of Chihuahua, Mexico. I. Susceptibility of Fossaria modicella (Say, 1825), the local intermediate host]. PMID- 3837283 TI - [Massive trichuriasis associated with balantidiasis and trichostrongylosis]. PMID- 3837284 TI - [Comparative study of the grades of Chilean medical students]. PMID- 3837285 TI - [What purpose do studies of pulmonary function serve?]. PMID- 3837286 TI - [Functional evaluation of incapacity secondary to respiratory diseases]. PMID- 3837287 TI - [Long-term effects of digoxin and hydralazine in patients with chronic cardiac insufficiency]. PMID- 3837288 TI - [Bacteremia due to anaerobic bacteria in internal medicine]. PMID- 3837289 TI - [Clinical and etiological study of chronic hepatitis and postnecrotic cirrhosis]. PMID- 3837291 TI - [Hairy cell leukemia: morphological study of 8 cases]. PMID- 3837290 TI - [Primary hypothyroidism with enlarged sella turcica: course under treatment]. PMID- 3837292 TI - [Constrictive pericarditis due to hydatidosis and tuberculosis]. PMID- 3837293 TI - [Non-invasive pulmonary pseudoallescheriasis. A case with histopathological and mycological diagnosis in material obtained by bronchoscopy]. PMID- 3837294 TI - [Incidence of thyroid dysfunction in patients during chronic treatment with amiodarone]. PMID- 3837295 TI - [Malignant histiocytosis: histopathological, immunohistochemical and ultrastructural study in 7 cases]. PMID- 3837296 TI - [Transbronchial biopsy through a fiberoptic bronchoscope]. PMID- 3837297 TI - [Characterization of serum concentrations of thyroid hormones in a healthy infantile Chilean population]. PMID- 3837298 TI - [Carotid body tumor]. PMID- 3837299 TI - [Prevalence of diabetes mellitus in a Mapuche community of Region IX, Chile]. PMID- 3837300 TI - [Various aspects of methodology in clinical research]. PMID- 3837301 TI - [Preoperative evaluation of respiratory function]. PMID- 3837302 TI - [Characterization of immune complexes precipitated by polyethylene glycols in systemic lupus erythematosus]. PMID- 3837303 TI - [Teaching of alcoholism in Chilean medical schools: a curriculum survey]. PMID- 3837304 TI - [Involvement of central nervous system in systemic lupus erythematosus. Experience with 20 patients]. PMID- 3837305 TI - [Hepatic scintigraphy (99mTc colloid) in patients with liver abscess: multivariate analysis]. PMID- 3837307 TI - [Ethics and scientific biomedical research]. PMID- 3837306 TI - [The climacteric: a psychosomatic perspective]. PMID- 3837308 TI - [Longitudinal study of the smoking habit among students of Catholic University. I. Habit characteristics in those entering from 1982 to 1984]. PMID- 3837309 TI - [Clinical evaluation of the control of respiration]. PMID- 3837310 TI - [Naloxone increases systemic arterial pressure during fetal asphyxia. Modulator role of endogenous opioids]. PMID- 3837311 TI - [Survival of patients with lupus nephropathy. II. Prognostic factors]. PMID- 3837312 TI - [Percutaneous biliary drainage]. PMID- 3837313 TI - [Staphylococcus aureus bacteremias]. PMID- 3837314 TI - [Respiratory failure in a general hospital]. PMID- 3837315 TI - [Non-fermentative Gram-negative bacilli of human origin. II. In vitro sensitivity of 185 strains to 17 anti-microbial agents]. PMID- 3837316 TI - [Acute porphyria: 2 clinical cases]. PMID- 3837317 TI - [Abnormal alcohol drinkers in a school population]. PMID- 3837318 TI - [Water, sodium and potassium in soft drinks]. PMID- 3837319 TI - [Introduction, hypothesis and discussion in theses or factual scientific articles]. PMID- 3837321 TI - Exceptionally high and diverse mutation rates in insects small rRNA. AB - The nucleotide sequence of 5S rRNA from the posterior silk gland of the silk worm Philosamia cynthia ricini has been determined. The comparison with other insect 5S rRNAs revealed an exceptionally conserved secondary structure, in spite of an extremely high mutation rate: Thirteen nucleotides are different in Philosamia and Drosophila 5S rRNA, but all substitutions are either compensatory or occur in loops or introduce G:U base pairs. The rates of base substitution per site per year of several insect species (diptera and lepidoptera) 5S and 5.8S rRNAs are compared with those occurring in vertebrate rRNAs. In the latter cases the rates are remarkably constant, whereas their value is not only about twofold higher in insect rRNAs, but is found to be extremely large in the 5S rRNA of the silkworm Bombyx mori. These data demonstrate that phylogenetic conclusions derived from small rRNA sequence comparisons are only of limited value. PMID- 3837320 TI - [Hypercalcemia syndrome not due to primary hyperparathyroidism]. PMID- 3837322 TI - Haemopoietic progenitor cells measured by limiting dilution in microwell culture. AB - Microwell culture assays, termed the "negative" well technique and the "positive" well technique have been used to measure the concentration of murine haemopoietic progenitor cells (HPC) by limiting dilution. Using morphologic examination and 3H TdR uptake, the number of HPC of Balb/c mice per 10(5) bone marrow cells was 33 and 31 respectively. the linear relation between the number of harvested cells and input cells seen on the 4th and 7th days of culture reflected the growth of HPC in microwells. Besides measuring the concentration of HPC, this culture system may facilitate the analysis of effects on proliferation and differentiation of HPC of culture conditions, haemopoietic factors as well as cytotoxic agents. PMID- 3837323 TI - The study of spectra and X-ray crystal structure of a novel bionics insecticide- (CH3)2NHCH(CH2S2O3)2Na X H2O. AB - IR and NMR spectra of novel bionics insecticide--C5NS4O6H12Na X H2O have been studied. The molecular and crystal structures of the compound also have been determined. The compound crystallizes in the monoclinic space group C5(2)h-P21/n with a = 8.0972(9)A, b = 16.262(4)A, c = 10.370(3)A, beta = 94.26(2)degrees and z = 4. The result shows that N atom in this compound captures a proton to form HN+ group, Na+ is in statistical disorder. Therefore, the structural formula of the compound is (CH3)2HN+-CH(CH2S2O3-)2 X 1/2(Na+)2 X H2O. PMID- 3837324 TI - Synthesis of methylisoamylnitrosamine from isoamylamine by fungi (Fusarium moniliforme). AB - Methylisoamylnitrosamine, a carcinogenic N-nitroso compound, has been formed in glucose ammonium nitrate medium containing 150 mg of isoamylamine (a primary amine) inoculated with a common fungus (Fusarium moniliforme Sheldon), to which 400 mg NaNO2 are added after incubation for 7-8 days at 28 degrees C. No such compound has been found in control samples without fungi or isoamylamine. This paper reports a method of experimental synthesis of the nitrosamine by F. moniliforme strains 82-01 and 83-01, using isoamylamine and NaNO2, as well as the analysis of the compound by GC/MS and GC/TEA. PMID- 3837325 TI - A new physiologic model for dynamic process of creatine kinase activity after acute myocardial infarction and estimation of infarct size. AB - A new physiologic model for dynamic process of Creatine Kinase (CK) after acute myocardial infarction is proposed. The fundamental hypotheses are tested. The new model is better than the log-normal model in goodness of fit. With this new model, the infarct size of complicated cases with double or multiple peak CK curve can be estimated as well as that of uncomplicated cases. To estimate parameters, a nomographic algorithm and a computer program have been designed. In most cases, the initial values for parameters estimated with Marquardt's method can be determined from individual CK data. PMID- 3837326 TI - [Cone input signals to L-type external horizontal cells of the cyprinid retina]. PMID- 3837327 TI - [Transient on-responses of L-type external horizontal cells in the light-adapted cyprinid retina]. PMID- 3837329 TI - [Tympanograms in relation to conditions of the ossicular chain and the tympanic cavity]. PMID- 3837328 TI - [Tympanograms in relation to conditions of the tympanic membranes]. PMID- 3837330 TI - [Effect of cervical sympathetic stimulation on the carotid sinus reflex in rabbits]. PMID- 3837331 TI - [Role of nucleus raphe magnus in the respiratory depression produced by microinjection of morphine into the nucleus parabrachialis medialis]. PMID- 3837332 TI - [Analysis of the excitatory effects of dimefline on respiration in rabbits]. PMID- 3837333 TI - [Effect of progestin no. 1 (cymegesolate) on menstrual cycles and plasma levels of progesterone in rhesus monkeys]. PMID- 3837334 TI - [Rat brain leucine-enkephalin contents under four stressful conditions]. PMID- 3837335 TI - [The myosin/paramyosin filament of the abdominal flexor of the crayfish Procambarus clarkii]. PMID- 3837336 TI - [Electrophysiological analysis of pathways connecting the periaqueductal gray and parafascicular nucleus in rats]. PMID- 3837337 TI - [An on-line microprocessor-based cardiac cell transmembrane potential analyzer]. PMID- 3837338 TI - [Effect of secretin, cholecystokinin octapeptide and electrical vagal stimulation on the pancreatic polypeptide levels of pancreatic juice and serum in dogs]. PMID- 3837339 TI - [Interaction of vagal stimulation and duodenal acidification in the regulation of pancreatic secretion]. PMID- 3837340 TI - [Electrophysiological effects of sotalol on the sinus node, atrium, AV node and his-bundle cells in the rabbit heart]. PMID- 3837341 TI - [A comparative study of the "force effect" of the left and right ventricles under acute hypoxia]. PMID- 3837342 TI - [Changes of cardiac mechanics, ECG and myocardial lactate in anesthetized dogs under progressive hypoxia]. PMID- 3837343 TI - [Analyses of the mechanism of dimefline-induced convulsive discharges in phrenic and tibial nerves]. PMID- 3837344 TI - [Effects of electroacupuncture and morphine on hippocampal potentials evoked by noxious stimulation of the splanchnic nerve in cats]. PMID- 3837345 TI - [Synaptic connection between the monoaminergic terminals and intercostal respiratory motoneurons in cats]. PMID- 3837346 TI - [Plasma concentrations of melatonin and N-acetylserotonin in different age groups of human males]. PMID- 3837347 TI - Genetics and the human encounter with alcohol. PMID- 3837349 TI - Prevention and treatment of alcohol abuse: uses and limitations of the high risk paradigm. PMID- 3837348 TI - Individual differences in sensitivity and tolerance to alcohol. PMID- 3837350 TI - The genetics of alcohol consumption in animals. PMID- 3837351 TI - Genetic influences on acquisition of tolerance to alcohol. PMID- 3837352 TI - Neurophysiological mechanisms in the genetics of ethanol sensitivity. PMID- 3837353 TI - Multivariable causal modeling in alcohol use research. PMID- 3837354 TI - Basic research on heredity and alcohol: implications for clinical application. PMID- 3837355 TI - [Notes on anthomyiidae from Mountain Emei, China V. Description of 2 new species of genus Pegohylemyia (Diptera)]. PMID- 3837356 TI - [The study of the synthesis of the antineoplastic agent DHAQ]. PMID- 3837357 TI - [A survey of Campylobacter infection in children]. PMID- 3837358 TI - [Electron microscope observation of Campylobacter jejuni]. PMID- 3837359 TI - [Isolation and identification of Campylobacter jejuni from chicken flocks]. PMID- 3837360 TI - [Measurement of very small birefringence of biological tissues]. PMID- 3837361 TI - [Observation on susceptibilities and immune responses of four strains of mice to the infection of a Leishmania donovani Chinese strain]. PMID- 3837362 TI - [Studies on the carcinogenicity of a new fungicide, 2-benzoyl-hydrazono-1,3 dithiolane (BHD), in rats]. PMID- 3837363 TI - [Methods of determination of L-cysteine hydrochloride and sodium pyrosulfite in 25% ascorbic acid injection]. PMID- 3837364 TI - [Preliminary observation on changes in serum triiodothyronine (T8), thyroxine (T4) nd thyroid-stimulating hormone (TSH) in patients with chronic cor pulmonale]. PMID- 3837365 TI - [Clinical application of thyroid lymphography]. PMID- 3837367 TI - [The removal of a renal carcinoma and carcinomatous thrombus in the inferior vena cava. A case report]. PMID- 3837366 TI - [A prevalence survey of hepatitis B virus infection among Lisu national minorities]. PMID- 3837368 TI - [Preparation and identification of monoclonal antibodies against Pagumogonimus skrjabini]. PMID- 3837369 TI - [125I-labelled monoclonal antibody in the detection of leptospiral antigens in tissues of guinea pig]. PMID- 3837370 TI - [Electron microscopic study on the influence of microwave irradiation on the blood-testis barrier of the rat testis]. PMID- 3837371 TI - [Effect of microwave on frequency of spermatogonia sister chromatid exchange (SCE) of mice testes]. PMID- 3837372 TI - [A study on the quantitation of human serum apolipoprotein B100 by enzyme-linked immunosorbent assay]. PMID- 3837373 TI - [Estimating pharmacokinetic parameters without restricting time limits to samples]. PMID- 3837374 TI - [A study of the relationship between leptospiral virulence and adherence]. PMID- 3837375 TI - [A study of freeze replica and SEM on the hepatocytic tight junctions and canaliculi in the guinea pig with Leptospirosis icterohaemorrhagiae]. PMID- 3837376 TI - [Study on the activity of adenosine deaminase in blood by an ammonia gas-sensing electrode]. PMID- 3837377 TI - [Investigations on the life cycle and biological characteristics of Romanomermis sichuanensis]. PMID- 3837378 TI - [Determination of arsenic in urine with hydride generation and atomic absorption spectroscopy]. PMID- 3837379 TI - [Two years' carcinogenicity study of fenitrothion in rats]. PMID- 3837380 TI - [Stepwise discriminant analysis on the relationship of immunostimulative activities and chemical structure of substituted cinnamic acids]. PMID- 3837381 TI - [Comparative bioavailability of prednisone and prednisone acetate tablets]. PMID- 3837382 TI - [The normal Corti's organ of the guinea-pig, cat and human: a scanning electron microscopic observation]. PMID- 3837383 TI - [An animal (goat) model for open heart surgery]. PMID- 3837384 TI - [A follow-up study of children with chronic tonsillitis treated with placental lipopolysaccharide]. PMID- 3837385 TI - [The method of some particular positional examination of the digestive tract. Single barium double contrast radiography of a lower esophageal "tumor"]. PMID- 3837386 TI - [Clinical evaluation of the measurement of left ventricular systolic and diastolic function using the gamma cardiac function device]. PMID- 3837387 TI - [Studies on the structural and functional changes in the pulmonary microvessels in pulmonary diffuse hemorrhage in leptospirosis]. PMID- 3837388 TI - [The enzyme histochemical changes in the liver of diabetic rats induced by streptozotocin]. PMID- 3837389 TI - [The injury effect of hematoporphyrin disodium salt of the pig and He-Ne laser to human cells in vitro]. PMID- 3837390 TI - [An investigation of the form of thyroid glands]. PMID- 3837391 TI - [Determination of maximal expiratory flow-volume curves of 815 normal children and adolescents in Chengdu]. PMID- 3837392 TI - [Determination of the maximal midexpiratory flow time and its clinical applications]. PMID- 3837393 TI - [Effect of discharge in air in a high-voltage laboratory on sister chromatid exchanges and frequency of micronuclei in peripheral blood lymphocytes of workers after exposure]. PMID- 3837394 TI - [Successive convulsion induced by coriaria lactone in 5-day-old rats]. PMID- 3837395 TI - [Damage of experimental coriaria lactone convulsion on immature rat brain development and the protective effect of glucose]. PMID- 3837396 TI - [Study of traumatic amenorrhea and ovarian function]. PMID- 3837397 TI - [The cytology of the vagina, vestibule and labia minora during pregnancy]. PMID- 3837398 TI - [Misdiagnosis of depressive stupor]. PMID- 3837399 TI - A case of primary systemic amyloidosis. AB - An adult patient with primary systemic amyloidosis associated with nephrotic syndrome and complete atrial-ventricular (A-V) block is described. This case was considered to be a slowly progressive primary amyloidosis because of a long time episode of poor appetite and nephrotic syndrome. Temporal pace making of the heart was not effective presumably due to heart muscle damage, per se. Autopsy specimens revealed typical features of primary amyloidosis in light microscopy and immunofluorescence. It is suggested that early detection of amyloid fibers in the heart muscles may improve prognosis in patients with primary amyloidosis. PMID- 3837400 TI - Change in fiber type in partially-denervated soleus muscle of the rat. AB - In 30% or less partially denervated muscle, the reinnervation of denervated muscle fiber may give rise to a change in motor unit size or number of muscle fibers innervated by a single motor neuron. This study was designed to evaluate changes in fiber type and contractibility of partially denervated rat soleus muscle. Partial denervation (by 30% or less) of the soleus nerve does not cause a decrease in the number of muscle fibers. A histochemical study was performed on frozen sections of the muscle. The total number of muscle fibers, atrophied fibers and type II fibers were counted. In the muscle 4 weeks after partial denervation, the number of type II fibers was fewer with a decrease of about 40% which was not significant. The twitch time to peak and half-relaxation time were not changed. The number of type II fibers was significantly decreased (p less than 0.01) after 8 weeks. There was a prolongation of contraction time. The decrease of type II fibers was extensive involving not only the denervated area but also the rest of the muscle area. The transformation of fiber type observed in partially denervated muscle may be attributed to a possible diminution of neurotrophic substances in intact motor neurons. PMID- 3837401 TI - An autoradiographic analysis of experimental non-oliguric acute renal failure in the mouse. AB - Non-oliguric acute renal failure is an increasing disease entity although management of this disease is yet to be established. Poisoning with the sublethal doses of HgCl2 provides an experimental model for the study of non-oliguric acute renal failure. The purpose of this study was to determine the mechanisms of regeneration of renal cortex in HgCl2 treated mice using whole body autoradiograms to evaluate the changes of DNA synthesis in the renal cortex as well as whole body organs in the mice. The whole body autoradiograms showed considerable uptake of thymidine in the renal cortex of the mice after 1.5 h, the highest uptake after 48 h and negligible uptake 8 days after the injection of HgCl2. On the other hand, autoradiograms showed no remarkable changes in the uptake of thymidine in the brain, lungs, heart and liver in HgCl2 treated mice. It was suggested that the initial treatment of non-oliguric acute renal failure within one week may play an important role in its prognosis. PMID- 3837402 TI - Quantitation of the pressing force required for feeling peripheral pulses. AB - A simple method has been developed for the quantitation of the pressing force, which is required to feel arterial pulse optimally by using finger tips on the radial artery. This force was measured by our transducer, which replaces the touch force generated by finger tips on the artery. This force, called the dead load, was traced 18 times in 8 hours on a volunteer, and the coefficient of variation of this load was 0.12. We selected 15 volunteers who had moderate touching force for plethysmography, and their dead loads were measured repeatedly 68 times over a week, where the mean and the standard deviation was 60 +/- 15 grams. The problems related to these research methodologies, which can bridge between traditional Chinese medicine and western medicine, were also discussed briefly. PMID- 3837403 TI - Progestin receptors in adult rat ovary during estrous cycle. AB - Using a synthetic progestin (P)(i.e. R5020), characteristics of P receptors were determined in the ovarian tissue cytosols from adult estradiol benzoate-treated or 4-day cycling rats. In the estradiol benzoate-treated rats a specific 3H-R5020 binding in the cytosol was found with a number of binding sites, V max = 110 fmol/mg protein and the equilibrium dissociation constant, Kd = 14 nM. In the 4 day cycling rats, specific binding was found in the 6-7 S region with the Vmax which fluctuated during the estrous cycle: the sequence of Vmax (fmol/mg protein) was 395 (proestrus) greater than 122 (diestrus) greater than 96 (late estrus) greater than 62 (metestrus) greater than 40 (early estrus). The Kd value varied during the cycle, the highest (22 nM) in proestrus and the lowest (5 nM) in early estrus. In addition, 3H-R5020 binders were thermolabile and of protein in nature. These results suggest that the rat ovary contains P receptors in its cytoplasm with high affinity and low capacity of P binding, the level of which fluctuates during the estrous cycle. PMID- 3837404 TI - Mitochondrial alterations in aged rat adrenal cortical cells. AB - Mitochondrial alteration in aged rat adrenal cortical cells were studied. Severe mitochondrial alterations were predominantly observed in the zonae fasciculata and reticularis of the adrenal cortex. Many adrenal cortical mitochondria from these zones were relatively larger in size and more irregular in shape. The matrix of altered mitochondria appeared denser than normal and the intramitochondrial cristae including myelin-like membrane configurations and parallel arrays were seen. Intramitochondrial inclusions such as paracrystalloid structures were also noted. In addition, giant mitochondria with various inclusions such as highly electron dense lipid-like materials, large vacuoles and other cytoplasmic organelles including small mitochondria were characteristically observed. Based on these data, functional aspects of the altered mitochondria in aged rat adrenal cortical cells were discussed. PMID- 3837405 TI - Autopsy findings in chronic pyelonephritis patients under dialysis--collected from the Annuals of Pathological Autopsy Cases in Japan. AB - Autopsy findings in chronic pyelonephritis patients on dialysis were studied in 122 cases. The greatest number of cases was in the 50-59 year-old group among males and in the 60-69 year-old group among females. Infection was the most frequent cause of death (39.3%), followed by bleeding (23.5%). The total number of patients with infections and bleeding was 68 cases (55.7%) and 39 cases (32.0%), respectively. Pneumonia and bronchitis were the most frequent (27.0%) in cases with infections and gastrointestinal bleeding was the most frequent (21.3%) in cases with bleeding. The incidence of tuberculosis (16.4%) as a complication was high. PMID- 3837406 TI - Equol: a contributor to enigmatic immunoassay measurements of estrogen. AB - The efficacy of radioimmunoassay (RIA) for the measurement of estradiol-17 beta (E2) in murine plasma was investigated. When Sephadex LH-20 or celite column chromatography was used to separate E2 from estrone (E1) and other cross-reacting compounds, the results were erratic if small volumes of mouse plasma were resolved. Assay of a diethyl ether extract of plasma (500 microL) was the most practical method for estimating the concentration of estradiol-17 beta in mice. This method was used to determine the pattern of estrogen secretion during the estrous cycle, on the day of implantation and during pregnancy. No convincing change in estrogen secretion was observed in the diestrous/proestrous mouse. By comparison, estrogen levels were elevated during pregnancy. Taken together, these results implied that cross-reactive components in plasma masked low levels of endogenous estrogen. Further evaluation of mouse plasma and urine using a co chromatography technique to examine estrogen elution from a reverse-phase HPLC system followed by GC/MS analysis indicated the presence of equol [7-hydroxy-3-(4 hydroxyphenyl)chroman], a phytoestrogen metabolite with a ring structure similar to estradiol-17 beta. Equol and possibly other cross-reactive components of plasma may account for the apparent lack of increased estrogen secretion during the mouse estrous cycle and on the day of implantation as determined by the radioimmunoassay of ether extracts of plasma. PMID- 3837407 TI - HPLC separation of anti-estrogen and estrogen receptor binding components of mouse plasma. AB - Proestrous mouse plasma and urine were subjected to diethyl ether extraction, enzyme hydrolysis and HPLC separation of estrogen components. Radioimmunoassay of the treated proestrous samples with a broad spectrum anti-estrogen serum failed to detect estradiol-17 beta, estrone or estriol. HPLC chromatograms contained two peaks of immunoreactive and estrogen receptor binding material with polarities between those of estriol and estradiol-17 beta. Similar peaks were detected in HPLC chromatograms of urinary extracts from ovariectomized and ovariectomized adrenalectomized mice. The least polar of the two peaks produced a mass spectrum identical to that of authentic equol [7-hydroxy-3-(4'-hydroxyphenyl)chroman], a phytoestrogen metabolite. The presence of significant quantities of circulating equol in all strains studied, combined with apparently low plasma levels of endogenous classical estrogens during proestrus, confound attempts to study estrogen secretion in the mouse. PMID- 3837408 TI - A simple radioimmunoassay for estriol 3-sulfate in pregnancy plasma without deconjugation. AB - A highly specific anti-estriol 3-sulfate antiserum was treated with 50% ammonium sulfate, and the crude globulin fraction was coupled to CNBr-activated Sepharose 4B. Addition of 0.1M Tris-HC1 buffer (pH 8.3) containing 0.1M glutamine to the solution of antigen-antibody enabled assaying without solvent-extraction or chromatography to remove endogenous interference. Subsequently, a direct radioimmunoassay using [6,7-3H]-estriol 3-sulfate as a radioactive ligand without deconjugation has been established and applied to the determination of estriol 3 sulfate levels in pregnancy plasma. The increasing plasma levels of estriol 3 sulfate are correlated with estriol levels over the period of gestation. The mean values of sulfated estriol concentration (A) in late pregnancy plasma were approximately 7 times as high as unconjugated estriol (B), but individual ratios of A to B showed considerable variability. PMID- 3837409 TI - Reaction of some antiinflammatory 17 beta-(2-aminooxazol-4-yl) steroids with hydrogen peroxide. Synthesis of steroid-17-spiro-5'-oxazolidine-2',4'-diones. AB - The heterocyclic moiety of 17 beta-(2-aminooxazol-4-yl) steroids is sensitive to the oxidizing action of hydrogen peroxide and yields products mainly from the opening of the amino-oxazole ring. Unlike simple 2-aminooxazoles, it does not rearrange to 2-imidazolone and the expected steroidal hydroperoxyimidazolidinones were not detected. Among the substances we isolated, N-(aminocarbonyl)-17 alpha hydroxy-17-carboxamides (2a) and (3a) undergo spontaneous cyclization, in the reaction conditions, giving steroid-17-spirooxazolidinediones (2d) and (3d). Spirane (2d) was synthesized in high yields from (2a) in strongly alkaline medium. PMID- 3837410 TI - The structure of progesterone receptors. PMID- 3837411 TI - Measurement of five androgens in the blood of immature and maturing male rainbow trout, Salmo gairdneri (Richardson). AB - Antisera for radioimmunoassay (RIA) against testosterone, 11-oxo-testosterone, 11 beta-hydroxytestosterone, 11-oxo-androstenedione, and 11 beta hydroxyandrostenedione were raised in female rabbits. The RIAs were tested for their suitability for quantification of the steroids after thin layer chromatography of ether extracts from plasma pools of immature and maturing male rainbow trout. Results from control experiments of the RIAs (buffer blanks, sensitivity, cross reactivity, intra- and inter-assay coefficients of variation, accuracy) were all within a normal range. These RIAs should be helpful tools to test the significance of the hypothesis concerning the "interrenal-liver-gonad axis" which has been proposed to account for the high androgen levels in male trout during high reproductive activity. PMID- 3837412 TI - Fate of peritoneal progesterone in the rabbit. AB - The efficiency of peritoneal absorption of progesterone was investigated by following the appearance of 3H-progesterone and its metabolites in the circulation after intravenous or intraperitoneal administration. Tritium rapidly entered the peripheral circulation when given by either route. The percentage of tritium appearing as modified progesterone was substantially lower following intraperitoneal administration. This difference can be largely attributed to splanchnic absorption and hepatic metabolism of intraperitoneal steroids. The potentially large amount of progesterone secreted into the peritoneal compartment may not contribute significantly to the peripheral circulating pool of progesterone. PMID- 3837413 TI - Identification of metabolites of methylprednisolone in equine urine. AB - Methylprednisolone and three metabolites, 17,21-dihydroxy-6 alpha-methyl-1,4 pregnadiene-3,11,20-trione, 6 alpha-methyl-17,20 beta,21-trihydroxy-1,4 pregnadiene-3,11-dione, and 6 alpha-methyl-11 beta,17,20 beta,21-tetrahydroxy-1,4 pregnadien-3-one were detected in equine urine after intraarticular administration of methylprednisolone acetate. All four compounds were excreted both in the unconjugated form and as glucuronic acid conjugates. They were identified by comparing data obtained from analyses by high performance liquid chromatography, thin-layer chromatography, ultraviolet spectroscopy and gas chromatography/mass spectrometry to those of the synthesized standards. The presence of trace amounts of a fourth metabolite, 6 alpha-methyl-11 beta,17,20 alpha,21-tetrahydroxy-1,4-pregnadien-3-one, was indicated by high performance liquid chromatography but confirmation has not been attained by the other methods. PMID- 3837414 TI - Synthesis of alpha,beta-unsaturated C24 bile acids. AB - Synthesis of the alpha,beta-unsaturated analogues of cholic acid, deoxycholic acid, chenodeoxycholic acid, and ursodeoxycholic acid is described. Each common bile acid was converted to the corresponding C22 aldehyde which was then converted to the delta 22 bile acid by Wittig reaction with methyl (triphenylphosphoranylidene)acetate. The synthetic unsaturated bile acids were characterized by thin-layer chromatography, gas-liquid chromatography, and mass spectrometry. PMID- 3837416 TI - Isolation of methyl 3-hydroxy-9-oxo-9,10-seco-23,24-dinor-1,3,5(10) cholatrienoate from a sterol bioconversion. AB - A mutant (UC9778) of M. fortuitum has been isolated which degrades cholesterol and plant sterols to mixtures of Ring A-phenolic compounds. The title compound was isolated by repeated chromatography, and its structure determined by spectroscopic methods. PMID- 3837417 TI - [The Tunisian child's respiratory tract allergy]. PMID- 3837415 TI - Concentration of [16 alpha-125I]iodoestradiol in human ovarian tumors in vivo and correlation with estrogen receptor content. AB - The gamma emitting estrogen [16 alpha-125I]iodoestradiol was administered to 11 patients with ovarian cancer and 1 patient with endometrial cancer. At specific times after the administration of the tracer, portions of the tumor and of control tissues, fat and muscle, were removed and counted. The amount of radioactivity in these tissues was compared to the cytosolic estrogen receptor content of the tumor, measured by Sephadex LH-20 gel filtration, in biopsy specimens taken before the injection of the tracer. There was a strong correlation (p less than 0.005) between the estrogen receptor concentration in the biopsied tumor and the amount of radioactivity in the tumor. There was no correlation between the isotope in the muscle and the tumor receptor, nor between the radioactivity in the tumor and that in fat or muscle. As would be expected for a steroid receptor mediated process, the bulk of the total tissue radioactivity was present in the nuclear compartment of the tumors. This pattern was not observed in the muscle. Furthermore, the nuclear radioactivity in the tumors was positively correlated with the cytosolic estrogen receptor content. These experiments demonstrate that under in vivo conditions this gamma emitting estrogen is concentrated in tumors in a manner that is dependent upon the estrogen receptor. It was also found that the concentrations of radioactivity in the blood were high, producing low tumor to blood ratios. The blood level of isotope was not due to the presence of the unmetabolized steroid, which disappeared from blood rapidly, but was caused by circulating metabolites of the injected steroid. Since the concentration of the isotope in the tumor was dependent upon the estrogen receptor level, it would appear from these experiments that it is theoretically possible to use such compounds to image and monitor tumors that contain estrogen receptors. However, rapid metabolism would seem to preclude the use of 16 alpha-iodoestradiol itself for this purpose. These studies point to the possibility that the synthesis of analogs of 16 alpha iodoestradiol, sterically protected against inactivation by rapid metabolism, may lead to a radiopharmaceutical agent that would be useful for imaging and monitoring estrogen receptor containing tumors. PMID- 3837418 TI - [Paraneoplastic syndromes in primary pulmonary cancer]. PMID- 3837419 TI - [Iatrogenic stricture of the urethra. A review of 67 cases]. PMID- 3837420 TI - [The staghorn calculus]. PMID- 3837421 TI - [Characteristics of depressive disorders of the Maghreb immigrant in France]. PMID- 3837422 TI - [Postoperative arteriovenous fistula]. PMID- 3837423 TI - [To the physician: a poem]. PMID- 3837425 TI - A new peritoneovenous shunt catheter. PMID- 3837424 TI - Successful animal study of small caliber heparin-protamine-collagen vascular grafts. PMID- 3837426 TI - A new single needle dialysis system. PMID- 3837427 TI - Hemodynamic and morphologic features of arteriovenous angioaccess loop grafts. AB - Bilateral femoral A-VLG (5 acute, 5 chronic) were implanted in 10 dogs (e-PTFE, 6 mm ID, 25 cm length). Acute studies included measurements of cardiac output (CO) and systemic vascular resistance (SVR). Blood pressure and pressure waveforms in the graft were obtained by retrograde catheterization and pull-back readings. Chronic dogs were sacrificed 8 wks postimplant; samples were obtained following a standardized protocol and studied by light microscopy (LM) and scanning electron microscopy (SEM). Hemodynamic data show a rise in CO, a decline in SVR and a high flow through each graft. Pull-back readings show a gradual drop in pressure and loss of pulsatility from the arterial to the venous side of the graft. LM studies show IH primarily in the proximal vein. SEM showed limited pannus ingrowth endothelium close to the anastomoses and otherwise a thrombus layer throughout the lumen. A-VLG are associated with high flow, pressure drop and loss of pulsatility. Proximal vein IH is a reproducible lesion. We conclude there is severe hemodynamic stress from disturbed flow and high flow velocity and it plays a critical role in the development of venous intimal hyperplasia in AV loop grafts. PMID- 3837428 TI - A solution to inlet pannus formation in the pneumatic artificial heart. PMID- 3837429 TI - The fluid mechanics of hemodialysis catheters. PMID- 3837430 TI - Subclavian vein thrombosis in hemodialysis patients. PMID- 3837431 TI - Continuous intravascular cyclosporine infusion by implantable pump. PMID- 3837432 TI - Evaluation of the Shiley dual lumen subclavian hemodialysis catheter. PMID- 3837433 TI - A comparison of methods to calculate the heparin reversal dose of protamine in cardiovascular surgery. PMID- 3837434 TI - Effective cancer therapy by a combination of filtration and chemotherapy. PMID- 3837435 TI - Development of nonaluminum phosphate binder hydrous cerium oxide (Ce alpha (OH)4 2 alpha . nH2O). PMID- 3837436 TI - Dismal prognosis despite maintenance hemodialysis in AIDS nephropathy and chronic uremia. PMID- 3837437 TI - Examining the foundations of urea kinetics. PMID- 3837438 TI - Continuous arteriovenous hemofiltration: a comparison with hemodialysis in acute renal failure. AB - Continuous arteriovenous hemofiltration (CAVH) is increasingly used in treatment of acute renal failure. There are no clinical comparisons to acute hemodialysis (HD). We studied control of uremia, electrolyte and fluid balance, and incidence of bleeding, hypotension, and tachyarrhythmia in 4 patients randomly alternated between CAVH and HD. The side effects both during and 4.3 hrs after each HD (total 88 + 97 = 187 hrs) were analyzed to allow time comparison. Five CAVH treatments (total 187 hrs) where 147 L BUN clearance and 10.9 kg net ultrafiltration (UF) occurred; and 23 HD (88 hrs) where 790 L BUN clearance and an UF of 34 kg were compared. Uremia and fluid and electrolyte control were achieved by all treatments except one CAVH session. Two patients had bleeding episodes on CAVH, and none on HD, despite careful minimal heparinization. There were 2 episodes of sudden hypotension on CAVH versus 6 on or after HD. Per unit time, there were 3 times as many episodes of hypotension with HD. Four episodes of sustained tachyarrhythmia occurred on CAVH, and 5 occurred on or after HD. When these side effects were more meaningfully normalized to BUN clearance, there were twice as many hypotensive events and 4 times as many tachyarrhythmic episodes on CAVH as on HD, although UF rate was 7 times faster on HD. CAVH is simple to do, but has more clinical ill effects than HD when normalized to treatment efficiency. The continuous heparinization necessary for CAVH is potentially dangerous, despite careful monitoring. The clinical safety of CAVH has probably been over-rated, and it best may be suited to patients with acute renal failure who do poorly on HD. PMID- 3837439 TI - Right ventricular function during left heart bypass evaluated by two-dimensional echocardiography. PMID- 3837440 TI - Reduced treatment time: hemodialysis (HD) versus hemofiltration (HF). PMID- 3837441 TI - Comparative analyses of bioprosthetic valve calcification in ventricular assist systems (VAS). PMID- 3837442 TI - "Pass-through" and "inertia" contribution to left-right flow difference (LRFD) in TAH recipients. PMID- 3837443 TI - An implantable power source for an artificial heart or left ventricular assist device. PMID- 3837444 TI - Recovery mechanism from postoperative profound heart failure by an automatic left ventricular assist system. PMID- 3837445 TI - Experimental evaluation of complete electrically powered ventricular assist system. AB - The LVAS utilizing an intrathoracic blood pump and a parathoracic, electrohydraulic energy converter has a number of promising features. These include: transcutaneous energy transmission and an implanted variable volume device which eliminate the need for percutaneous access; utilization of an intrathoracic blood pump and variable volume device which allow the diaphragm and abdominal cavity to remain intact; parathoracic or subcutaneous location of the transformer secondary, energy converter, internal battery and interconnecting elements allowing replacement with a minor surgical procedure; employment of the "biolized" continuous blood contacting surface which has the potential of long term use without anticoagulants and utilization of an electrohydraulic energy converter which provides synchronization without requiring transducers and associated electronics and which provides lubrication of mechanical components. The development effort, which began separately in 1977 and has been conducted jointly by Nimbus and the Cleveland Clinic since 1980, has demonstrated that the above features can be incorporated in a reliable LVAS. In particular, the system in vivo test series have demonstrated the soundness of the basic concepts and led to refinements which were demonstrated in the 6-1/2 mo test. All elements of the system have been utilized during the in vivo test program. Component tests of significance include: LVAS and total heart blood pump in vivo experiments of up to 7 mos duration which demonstrate the blood compatibility of the biolized surface without the use of long-term anticoagulation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837446 TI - Factors affecting left-right heart output differences in artificial heart implanted animals. PMID- 3837447 TI - A mathematical model to predict the optimal control mode for a pusher-plate total artificial heart (TAH). AB - Table I lists the physiological criteria for ranking each control mode (hemodynamic conditions assumed are listed in Figure 4). For each criteria, each mode was given a ranking of 0 to 3, with 3 the best. At the bottom of the table is the total of all criteria grades. The ranking from best to worst mode is in order: IND, LMA/LMS, Low FR/High FR, RMA/RMS. A discussion of Table I follows: FR is a reliable control mode and has been used extensively clinically, including the recent TAH human implants. The advantage of this mode is its simplicity: if the venous return is below pump capacity, then all incoming blood can be pumped out without any sophisticated controller. However, when the flow demand exceeds the pump capacity, HR must be increased. The ideal situation would be to set FR at one HR and %S, and leave these settings over the life of the recipient. However, a high HR like this would result in relatively high atrial pressures and low flow rates with respect to IND (as shown theoretically, in vitro, and in vivo). Although the patient would have a high maximum COR, the daily COR would be low, resulting in a relatively high AVO2 difference. Finally, FR lacks afterload sensitivity. RMA and RMS received the lowest grade of all modes. Because of the L L shunt, the stroke length of these modes are smallest, and thus the CO curves and FPS are poorer than any other mode.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837448 TI - Comparative hematological data from animals implanted with a total artificial heart containing different valves. AB - A review of animals receiving a TAH with 4 mechanical valves suggests that the least damage to the blood cell components is associated with the BS valve when compared with the MH valve at similar heart rates. Clinical anemia in varying stages was observed in most animals in this study. However, most calves compensated for the increased rate of hemolysis and none required blood transfusions. The BS valve would appear to combine minimal turbulence and mechanical crushing in a physiological setting. PMID- 3837449 TI - Surgical approaches to applying an LVAD in a "one pump TAH" configuration. PMID- 3837450 TI - Interactions of plasma proteins with selective artificial surfaces. PMID- 3837451 TI - Antithrombogenic elastomers: novel anticoagulant/complement inhibitor-controlled release systems. AB - We have introduced novel synthetic anticoagulant and complement inhibitors for controlled release systems with high biocompatibility. These drugs were molecularly designed for extremely high biospecific inhibition, are readily soluble in polar organic solvents, such that they have versatile applications in commonly used hydrophilic polymeric systems via an easily attainable one-step co casting technique at a given amount of loading. Another characteristic feature of the controlled release system is that both release rate and duration are controlled by the material, formulation and fabrication variables. These are easily manipulated by the hydrophilicity of polymers, amount of loading and film thickness. The drug-impregnated system may generate a new dimension in the formulation of controlled release biocompatibility. PMID- 3837452 TI - Albumin coatings resistant to shear-induced desorption. AB - Using an immunoferritin-transmission electron microscopic technique, we studied the effects of C18 alkylation and fluid shear on the distribution of albumin absorbed to a segmented polyether polyurethane. Samples were exposed to 25 mg/dl albumin solution at 0, 100 or 1500 s-1 wall shear rate for 1 min. Others underwent static incubation with albumin solution for 20 mins, followed by exposure to phosphate buffered saline at 0, 100 or 1500 s-1 for 1 min. Significant increases in uniformity and density of the albumin adsorbate were observed for all C18 alkylated surfaces, at all wall shear rates. C18 alkylation also significantly decreased the rate of shear-induced desorption of albumin. Results suggest that C18 treatment may promote the rapid development and retention of an endogenous albumin layer for blood contacting materials. PMID- 3837453 TI - Coated bioresorbable mesh as vascular graft material. PMID- 3837454 TI - An immobilized enzyme reactor for treatment of severe neonatal jaundice. PMID- 3837455 TI - Experimental in vitro cultivation of human endothelial cells on artificial surfaces. PMID- 3837456 TI - Predilution versus postdilution for continuous arteriovenous hemofiltration. AB - When compared to the postdilution mode, the predilution mode has the following advantages and disadvantages: ADVANTAGES: A significant increase in net urea clearance when compared to the postdilution mode: This study, showing a net 18% increase, confirms the conclusions of our preliminary studies 15, 16. It allows for a more liberal use of suction-assist: The combination of predilution and suction-assist can yield a 60% increase in net urea clearance without the generation of prohibitively high hematocrits and protocrits. A potential increase in effective filter life by dilution of prefilter hematocrit, clotting factors, and platelet count. Disadvantages: Increased cost of replacement fluid: This is usually modest, approximately a 10 to 30% increase in total volume needed. With a total output of 20 L/day this would represent approximately 6 L. In the manner prepared (Table 4, Ref 6) this represents approximately $10 a day and must be contrasted with the potential for increased filter life, the replacement of which represents the major cost of CAVH therapy. Furthermore, and perhaps more important, is that this modest increase in replacement fluid costs yields a substantial increase in urea clearance, especially when used with suction-assist, thus eliminating the need for intermittent hemodialysis and the costs it incurs. The filtrate chemistries can no longer be used to monitor the patient's plasma values: Although the potential savings in blood drawing is real, experience with the postdilution mode suggests that filtrate values are rarely considered adequate by the attending medical staff. PMID- 3837457 TI - Development and evaluation of a synthetic ligament graft. PMID- 3837458 TI - Development of a latex foley catheter with sustained release of chlorhexidine. PMID- 3837459 TI - Physiological laryngeal pacemaker. PMID- 3837460 TI - An approach to an artificial nose. PMID- 3837461 TI - A new approach to respiratory assist for phrenic nerve paralysis. PMID- 3837462 TI - New fiber for ligament and tendon prosthesis. AB - A new material has been used as tendon and ligament prosthesis on animals. The long-term clinical results obtained after ACL and Achilles tendon replacement suggest an adequate tolerance and a function of the prosthesis. PMID- 3837463 TI - Prerequisites for urinary bladder design. PMID- 3837464 TI - Long-term intubation with silicone rubber endotracheal prostheses for injury or inoperable major airways obstruction. PMID- 3837465 TI - The longer term patency of a compliant small diameter arterial prosthesis: the effect of the withdrawing of aspirin and dipyridamole therapy: the effect of reduced compliance. PMID- 3837466 TI - Use of cryoprecipitate coagulum for removal of multiple "inaccessible" calculi from the biliary and urinary systems. PMID- 3837467 TI - Findings from the NIH National CAPD registry. January 1985. PMID- 3837468 TI - Comparison of urea kinetics and direct dialysis quantification in hemodialysis patients. PMID- 3837469 TI - Switch from acetate (Ac) to bicarbonate (Bi) dialysis: better dialysis tolerance but failure to improve acidosis and hypertriglyceridemia (HTG). PMID- 3837470 TI - Arteriovenous hemodiafiltration (AVHDF) combined with continuous arteriovenous hemofiltration (CAVH). PMID- 3837471 TI - Measurement of the effective dialyzer Na diffusion gradient in vitro and in vivo. PMID- 3837472 TI - Release of pyrogens during clinical hemodialysis. PMID- 3837473 TI - Pumpless extracorporeal oxygenation of the blood through a hollow fiber oxygenator. PMID- 3837474 TI - Simultaneously ejecting left-or-right triggered total artificial heart actuated by a single electromechanical system. PMID- 3837475 TI - Pulmonary artery to pulmonary artery shunt (PAPAS). PMID- 3837476 TI - Nickel transfer during hemodialysis. PMID- 3837477 TI - Renal function in calves with total artificial hearts. PMID- 3837478 TI - The effect of intraaortic balloon pumping (IABP) on pulmonary circulation. PMID- 3837479 TI - Blood pump with a magnetically suspended impeller. PMID- 3837480 TI - Porous hydroxyapatite (HAP) for tracheal interface. PMID- 3837481 TI - Flow injection analysis with chemically sensitive field effect transistor detector for monitoring potassium concentration in dialysate. PMID- 3837482 TI - Flow visualization of blood at the wall of a porous fiber. PMID- 3837483 TI - Comparison of different blood parameters for evaluation of complement activation during hemodialysis. PMID- 3837484 TI - Applications of protease inhibitor to hemoperfusion and plasma exchange as a regional anticoagulant. PMID- 3837485 TI - In situ generation of active catalytic layer on glucose sensing platinum electrode. PMID- 3837486 TI - Spontaneous ascites filtration and reinfusion (SAFR) as ambulatory chronic treatment for hepatorenal syndrome. PMID- 3837487 TI - Chronic liver disease animal model for evaluation of artificial liver support systems. PMID- 3837488 TI - Development of hemoglobin oxygen optical sensors for automatic control of artificial heart output. PMID- 3837489 TI - Hemocompatibility of heparin-fixed IONEX. PMID- 3837490 TI - Enzyme based metabolic assist system. PMID- 3837491 TI - Prevention of platelet contact activation by prostaglandin E1 released from polyurethane surfaces. PMID- 3837492 TI - New surface treatments to prevent thrombosis during extracorporeal circulation. PMID- 3837493 TI - Turbulent shear stresses from prosthetic heart valves. PMID- 3837494 TI - Importance of composition of the initial protein layer and platelet spreading in acute surface-induced thrombosis. PMID- 3837495 TI - Calcification in cardiovascular implants: degraded cell related phenomena. PMID- 3837496 TI - Fabrication and long-term implantation of semi-compliant small vascular prosthesis. PMID- 3837497 TI - First clinical results of a new surgical bile duct endoprosthesis. PMID- 3837498 TI - Analysis of complement activation profile during cardiopulmonary bypass and its inhibition by FUT-175. PMID- 3837499 TI - Scanning electron microscopic evaluation of polyurethanes used for biomedical applications. PMID- 3837500 TI - Acute hypotension during acetate-buffered dialysis in chemically sympathectomized dogs. AB - Hemodialysis of chemically sympathectomized dogs using acetate-buffered dialysate was associated with a profound early drop in blood pressure due to a decrease in peripheral vascular resistance. Subsequently, blood pressure and peripheral resistance recovered to near normal levels. An increased pulse rate was also noted. None of these hemodynamic changes occurred when bicarbonate-buffered dialysate was used. PMID- 3837501 TI - Copper metabolism in uremia: effect of dialysis and zinc supplementation. PMID- 3837502 TI - Urethanes as ethylene oxide reservoirs in hollow-fiber dialyzers. PMID- 3837503 TI - Why dialyze more than 6 hours a week? PMID- 3837504 TI - Continuous ambulatory EEG monitoring following desferrioxamine (DFO) i.v. infusion. PMID- 3837505 TI - Anticoagulant and kinetic effects of complement activation. PMID- 3837506 TI - Hemodialyzer reuse: practices in the United States and implication for infection control. AB - Reuse of hemodialyzers has continued to increase dramatically. In 1983, 52% of the hemodialysis centers were reusing hemodialyzers. Use of hollow fiber hemodialyzers has paralleled this increase in hemodialyzer reuse with 63% of the hemodialysis centers reporting exclusive use of this type of hemodialyzer in 1983. Although reuse of hemodialyzers has not been associated with increased incidence of hepatitis B infection or pyrogenic reactions, an outbreak of nontuberculous mycobacteria in 27 chronic hemodialysis patients was probably associated with water used to reprocess dialyzers. Nontuberculous mycobacteria were isolated from the water in 83% of 115 hemodialysis centers surveyed across the United States and could constitute a potential infection risk because of the organisms' greater germicide resistance than most other naturally occurring water bacteria. Two percent formaldehyde is not an effective germicide for high level disinfection of hemodialyzers. Reprocessed hemodialyzers should be disinfected with 4% formaldehyde or an equivalent disinfectant. PMID- 3837507 TI - The reduction in the peritonitis rate among high-risk CAPD patients with the use of the Oreopoulos-Zellerman connector. AB - We have described a prospective controlled study of the Oreopoulos-Zellerman peritoneal dialysis connection system which is based on the principle of chemical sterilization of the connector between each dialysis exchange. This system, in a short-term study of 27 high-risk patients, has resulted in a fourfold difference in the peritonitis rate between the concurrent control group (1/8.8 patient months) and the O-Z group (1/35.7 patient months). The probability of developing peritonitis by 6 mos was 0.15 using the O-Z connector and 0.46 in the control group. PMID- 3837508 TI - Prognostic factors associated with peritonitis among patients on continuous ambulatory peritoneal dialysis (CAPD). PMID- 3837509 TI - A portable hemodialysis system with sorbent regeneration of dialysate: preliminary results. PMID- 3837510 TI - Long-term reduced time hemoperfusion-hemodialysis compared to standard dialysis: a preliminary crossover analysis. PMID- 3837511 TI - Diabetic nephropathy 1985. Prevalence, type, paradoxical insulin behavior. PMID- 3837512 TI - Two years clinical experience with continuous arteriovenous hemofiltration in acute renal failure. AB - Clotting of hemofilters is the most frequent single cause of filter failure. These filters frequently clot in spite of acceptable hemodynamic and anticoagulation parameters. Sixty percent of filters which eventually clotted never filtered above 200 ml/hr. In our experience maximum ultrafiltration rates of 500 ml/hr to over 1000 ml/hr are rarely achieved in routine clinical usage. Finally, a disproportionate number of filters accessed to the lower leg either clotted or were discontinued for subsequent dialysis. Thus, we conclude that lower leg accesses should be avoided if possible. Further, to prevent clotting, in addition to maintaining adequate anticoagulation and cardiac output, maximum ultrafiltration rates should be sought. To achieve maximum ultrafiltration rates, a good vascular access is primary. Also, a vacuum system may be needed and perhaps routinely used to obtain filtration rates near 500 ml/hr. These high filtration rates will also reduce the need for hemodialysis, the second most common reason for filter discontinuation. PMID- 3837513 TI - Evaluation of uremic neuropathy by visual (VEP) and brainstem auditory (BAEP) evoked potentials. PMID- 3837514 TI - Heparin-free hemodialysis with Cuprophan hollow fiber dialyzers by a frequent saline flush, high blood flow technique. PMID- 3837516 TI - Evaluation of a new siliconized polypropylene hollow fiber membrane lung for ECMO. PMID- 3837515 TI - The interrelationship of dialysate glucose and lactate in continuous ambulatory peritoneal dialysis (CAPD). PMID- 3837517 TI - Electrically induced contractile phenomena in charged polymer networks: preliminary study on the feasibility of muscle-like structures. PMID- 3837518 TI - Acute lung injury during cardiopulmonary bypass, the role of neutrophil sequestration and lipid peroxidation. PMID- 3837520 TI - Extracorporeal membrane oxygenation (ECMO) in pumpless right ventricle to left atrium bypass. PMID- 3837519 TI - Total respiratory support with single cannula venovenous ECMO: double lumen continuous flow vs. single lumen tidal flow. PMID- 3837521 TI - Compact cross-flow tubular oxygenators. PMID- 3837523 TI - Normalization of hematocrit in regular hemodialysis patients: the role of renal cyst formation. PMID- 3837522 TI - Treatment of acute renal failure in the newborn by continuous arteriovenous hemofiltration. PMID- 3837524 TI - Residual formaldehyde in new and reused dialyzers. PMID- 3837525 TI - Progression of coronary and valvular heart disease in patients on dialysis. AB - Coronary heart disease and end-stage renal disease: Coronary heart disease is frequent in patients with end-stage renal disease. Without invasive procedures coronary heart disease is often not diagnosed in patients with end-stage renal disease. We have no evidence for accelerated progression of coronary heart disease under conditions of dialysis. Valvular heart disease and end-stage renal disease: Valvular heart disease shows an increasing frequency depending on the period of dialysis. Valvular heart disease is often unnoticed and constantly underestimated without invasive investigation. Valvular heart disease often indicates a bad prognosis in our patients with end-stage renal disease. PMID- 3837526 TI - Reduction in peritonitis frequency by the Dupont Sterile Connection Device. PMID- 3837527 TI - Zirconium does not produce osteomalacia in rats with chronic renal failure. PMID- 3837528 TI - Pathologic findings and their implications in patients managed with temporary ventricular assist. PMID- 3837529 TI - Kinetic comparison of hemofilters for continuous arteriovenous hemofiltration (CAVH). PMID- 3837530 TI - Biocompatibility and bilirubin removal by diacetylchitin coated XAD-4. PMID- 3837531 TI - Effect of hemodialysis on myocardial contractility. PMID- 3837532 TI - Outcome of myocardial infarction during maintenance hemodialysis. PMID- 3837533 TI - A new autologous plasma exchange system with salt-amino acid coprecipitation (SAC) method. PMID- 3837534 TI - Membrane plasma filtration (MPF): effect of temperature on heparin and macromolecule sieving. PMID- 3837535 TI - Apheresis: clinical response to patients unresponsive to conventional therapy. AB - Ten of 13 (76.9%) rheumatoid arthritis (RA) patients having intensive cryofiltration treatment showed improvement and 5 of 7 (71.4%) of RA patients treated on maintenance cryofiltration therapy showed improvement. Encouraged by these results, 2 centers were established for controlled trial studies of RA patients. Four of 4 (100%) rheumatoid vasculitis patients treated by cryofiltration and 4 of 7 (57.1%) patients treated with plasma exchange showed clinical improvement. An SLE patient with thrombocytopenia showed a dramatic rise in platelet count during intensive (3 day/wk) plasma exchange treatments despite little prior response to drugs, platelet infusions and splenectomy. Plasmapheresis was effective in improving clinical symptoms and lipid abnormalities in a primary sclerosing cholangitis patient without causing hypoproteinemia during the long-term therapy (4 yrs). PMID- 3837536 TI - Extracorporeal antibody removal effect on antibody kinetics. PMID- 3837537 TI - Thermal effect of LDL/HDL separation in membrane filtration; thermofiltration. PMID- 3837538 TI - Morphometric studies of chronic fibrillating heart. PMID- 3837540 TI - Hemodynamic and pathologic consequences of biventricular bypass using left atrial versus left ventricular withdrawal. PMID- 3837539 TI - Diagnosis of mechanical failures of total artificial hearts. PMID- 3837541 TI - Preparing an institution for clinical device experimentation. PMID- 3837542 TI - Induced chronic left ventricular dysfunction in the dog. PMID- 3837543 TI - [Three new serovars in Leptospira interrogans]. PMID- 3837544 TI - [Intracellular appearance, morphological feature and properties of Aspergillus niger virus]. PMID- 3837546 TI - [Synthesis of 15 peptide of the subunit A2(10-24) of cholera toxin and initial biological activity]. PMID- 3837545 TI - [Cloning and sequencing of the hemagglutinin gene of swine influenza virus]. PMID- 3837547 TI - [The isolation of Clostridium difficile and the detection of its cytotoxin from the hamster colitis model]. PMID- 3837548 TI - [Production of leucocyte (Le)-interferon by human tonsillar lymphocytes]. PMID- 3837549 TI - [Identification of bacterial lysogeny by detecting phage DNA]. PMID- 3837550 TI - [Studies on allergen of Brucella. I. Fractionation and assay of Brucella protein allergen]. PMID- 3837551 TI - [A new strain of agar-digesting bacteria which is able to decolorize melanoidin]. PMID- 3837552 TI - [The structural polypeptides of the mumps virus--the electrophoresis determination of the molecular weight]. PMID- 3837554 TI - [Studies on character of 12 regenerating bacteria of Yersinia enterocolitis]. PMID- 3837553 TI - [Studies on pathogens of farmer's lung in Jiangsu--isolation and classification of thermophilic actinomycetes]. PMID- 3837555 TI - [Is there a subgroup of hyperkinetic children with emotional disorders? Results of a pilot study]. AB - Child psychiatric classification systems make no provision for a regular association between the Hyperkinetic Syndrome and emotional disorders. However, such an association could be demonstrated in 9.3% of 464 in- and outpatients seen at our child psychiatric unit for treatment of hyperkinesis. Based on the differences found between the subjects with both the Hyperkinetic Syndrome and emotional problems and those without emotional problems, four pathogenetic models were discussed. An experimental design is proposed for hypothesis testing. PMID- 3837556 TI - [Perinatal umbilical artery pH and cerebral function disorders in twins starting school]. AB - Thirty twins aged 5 to 7 years old were assessed by a child psychiatrist in their home environment, and their parents were also interviewed. Umbilical artery pH, an obstetrical index and social class all failed as predictors of the dysfunctions found in these children. On the other hand, correlations were found between disturbances in family relationships and certain presumably "environment free" variables. It is recommended that in child psychiatric counselling and treatment of "at risk" children more importance be attached to family development. PMID- 3837557 TI - [Disease concepts in child and adolescent psychiatry]. PMID- 3837558 TI - [Computer tomography, electroencephalography and neurologic findings in child and adolescent psychiatric syndromes]. AB - Computed tomographic brain scan (CT) findings in 239 inpatients seen at a child psychiatry unit were rated in terms of type, location, and severity of brain damage. The rate of abnormalities found was 42%, which is consistent with the figures reported in the literature. There was only a small overlap between abnormal CT findings and abnormal findings in the electroencephalographic (EEG) or neurological examinations. Although abnormal CT findings were more frequent in children with certain diagnoses, i.e. those with psychoses or anorexia nervosa, no CT findings were characteristic of any group, thus indicating a quantitative rather than a qualitative difference. The fact that there was little overlap between CT scans and EEG or neurological findings suggests the need for more studies on diagnosing brain damage and on the relationship of brain damage to psychiatric symptoms. PMID- 3837559 TI - [Can the family continue to guarantee the rights of children?]. AB - The legal position of children is based essentially on the assumption that the family can always safeguard the child's welfare in confrontations with a third party. Therefore children have not been granted autonomous legal status; their interests are protected by the term "the child's best interest", which although incorporated into law is not defined. In recent years more attention has been paid to the legal status of children, and a certain amount of autonomy has been granted, although not without contest. This tendency is an expression of a change in family structure, which until recently conformed to the ideal of the nineteenth century bourgeois family. Our own limited investigations show, in addition to already well known demographic changes, that in the course of our century young children have become more and more limited in their opportunities to form strong emotional bonds. Only since then has the dual bond of early childhood been recognized as being of primary importance. The family is becoming increasingly inadequate. Children are therefore increasingly endangered by the death or divorce of their parents. As a result it is essential that better legal provision be made to ensure that they are regarded as autonomous individuals. PMID- 3837560 TI - [Effect of psychosocial risks on the maturation of EEG background activity in early childhood brain-damaged children]. AB - Age-dependent changes in EEG activity were assessed in a comparison of EEG recordings taken from 102 children at the ages of 6 and 10 years. Of the 2-to-13 cycle-a-second activity recorded from the left occipital region, the fast alpha frequencies (10 to 13 cycles a second) showed a significant increase at the expense of all slower frequencies. The children were divided into two groups according to whether they had been exposed to a small or large number of biological risks; in the latter group the extent of the increase in fast alpha activity was negatively related to the number of additional psychosocial risks. This effect was even more pronounced in the group of brain-damaged children, where the smallest age-dependent shift in the EEG frequencies was seen in the group with both minimal brain damage and a high psychosocial risk factor. These data suggest that the exposure of children with minimal brain damage to multiple psychosocial risks may lead to a delay in the maturation of the brain that can be detected by neurophysiological methods. PMID- 3837561 TI - [Psychodynamic relevance of sibling relations]. AB - Sibling relations, including the relations of both parents and children with their siblings, are of as great importance in assessing the normal or abnormal development of a child as in understanding family psychodynamics. Sibling interaction is one of the "universals" in a biography; it was even dealt with in mythology. Despite numerous studies, there is little conclusive evidence about the subjective and psychodynamic significance of birth order. Diagnostic and therapeutic assessments must be made with the particular case in mind, which also presupposes that investigators take into account resistance they themselves may have to the topic of siblings. The author discusses the points that can be of importance with regard to siblings. PMID- 3837562 TI - [The transsexual syndrome in children and adolescents]. PMID- 3837563 TI - [Psychotherapy in child guidance clinics]. PMID- 3837564 TI - [Learning and performance behavior of MCD children with specific partial performance weaknesses]. AB - Twenty-four children with specific learning difficulties and 23 normal children were given various problem-solving tasks, and the strategies they used to solve the problems were analyzed in terms of information theory. This process-oriented analysis showed that the children with learning disabilities could not solve the convergent thinking tasks using simultaneous strategies but instead needed successive steps. On object-finding tasks they more frequently used a trial-and error strategy, which they maintained in task repetition even after interactive elaboration of solution-relevant operators (low degree of learning from experience). PMID- 3837565 TI - [Attention and distractibility in hyperkinetic children. Methods and results of research]. AB - Sustained attention in children was investigated with a new method in which 4 measures of attention are recorded simultaneously over a period of 30 minutes during a self-paced operant task. A preliminary study with 56 normal children revealed that performance speed and brief lapses in attention have low validity as measures of attention, but errors and especially impulsive reactions have high validity. Impulsive behavior is thus characteristic not only for hyperactive children but also for normal children with attentional problems in everyday situations. The subjects in the main investigation were 12 hyperactive boys aged 8 to 11 years old. Hyperactivity had to be the major complaint, with the diagnosis substantiated by a pediatrician's findings and by a high motor-activity score in a teacher's assessment. Twelve normal boys matched for age, IQ and grade in school served as control subjects. All children attended regular schools and were of normal intelligence. The validity of the selection procedure was confirmed by the significantly lower heart rate found in the hyperactive group. Attention was assessed for 30 minutes under quiet and distraction conditions. The groups differed significantly in number of errors and number of impulsive reactions, but only in the absence of distraction. The stress of sustained attention for 30 minutes did not increase the differences; on the contrary, they decreased. A special type of attentional deficit in hyperactive children could not be confirmed. Our results do not support the hypothesis that hyperactive children are more distractible, have more frequent brief lapses in attention or have a poorer ability to sustain attention than normal children. Rather, they suggest that the attentional deficits represent a personality trait. PMID- 3837566 TI - [Modified holding therapy. A basic therapy in the treatment of autistic children]. AB - Seven autistic children were selected at random from a group of 14 and treated with modified holding therapy (MHT) for 4 weeks. The remaining 7 children (control group) were not treated during a 4-week waiting period. Four of these children were then treated with MHT. The children's parents assessed positive behavior changes (increases in desirable behavior and decreases in undesirable behavior) and negative changes on a behavior rating scale. Significantly more positive changes in behavior problems were reported for the experimental group than for the control group (untreated group) in each of the four symptom categories assessed (disturbances in perception, in speech and in social interaction and obsessive-compulsive or ritualistic behavior). The 4 children in the control group who were later treated with MHT showed behavior changes that correlated highly with those reported for the experimental group. The results are discussed and interpreted from the viewpoint of the two-system theory of information processing and its meaning for psychoses. PMID- 3837567 TI - [Epilepsy, anticonvulsive treatment and child psychiatric conspicuousness]. AB - Seventy-nine children suffering from epileptic seizures who were seen at a clinic for child and adolescent psychiatry for behavior disorders were compared with a control group from the same clinic matched by age, sex and IQ. Significant differences were found between the two groups in the percentages diagnosed as having "no psychiatric disorder", "neurotic or emotional disorder" and "specific disorder following brain damage". Neither the type nor the frequency of epileptic seizures was found to have an influence on the type of psychiatric disturbance. Only a small proportion of the children with epilepsy (12%) had psychiatric symptoms, which if present were compatible with the diagnosis "organic psychosyndrome". No abnormal psychosocial situations were found to be specific for epilepsy, but the type of medication (especially barbiturates) had a significant influence on the incidence of conduct disorders. PMID- 3837568 TI - [Ambulatory treatment of enuretics]. AB - After discussing some of the problems associated with behavior therapy of enuresis we describe a treatment approach we are using at an outpatient clinic for child and adolescent psychiatry. We then report on our experience with this approach and indicate possible future developments regarding both the theory behind this technique and applications. PMID- 3837569 TI - [A scale for the assessment of psychiatrically disordered children and adolescents]. AB - A global assessment scale for children and adolescents is presented. The reliability and validity of the scale were documented in previous studies. In the present study the instrument was used to assess a group of children and adolescents seen consecutively at an outpatient psychiatric clinic. Again the scale was found to differentiate well among patients with a variety of problems. Both mental retardation and low socioeconomic status are associated with low scores on the scale. With a cutoff score of 70 most subjects with problems or impairments can be differentiated from normal subjects. The scale also reflects the need for treatment and gives an indication of the type of therapy needed. Furthermore, it can be used to assess changes during therapy. PMID- 3837570 TI - [Pleiotropic tics and early disorders of ego development]. AB - The long-term inpatient psychotherapeutic treatment of a 10-year-old girl with pleiotropic tics, aggressive behavior and a conduct disorder is described. The symptoms were present in the context of a compulsive-depressive personality development. The positive course of treatment is interpreted from a psychoanalytic perspective. PMID- 3837571 TI - [Combined treatment of autism]. AB - In this detailed case report we describe the inpatient treatment of an eight-year old boy with infantile autism. A multiple modality approach was used that included holding therapy as recommended by Prekop (1983), educational therapy and lithium treatment. The aim of holding was two-fold: to achieve interpersonal contact with the child and to improve his ability to concentrate on learning tasks. The educational therapy also served to increase his attention span and, later to initiate language acquisition. Lithium treatment resulted in better control of behavior and in improvement of mood. PMID- 3837572 TI - [Points of reference for home treatment]. AB - Home treatment has been heralded as a viable alternative to other more conventional treatment approaches. It seems to fulfill legal (and ethical) requirements in that it imposes relatively few restrictions on the patient. Considering that it is clearly in line with contemporary views, e.g. that problems are best treated where they occur, and has thus found wide acceptance, it is surprising that this type of intervention has so rarely been the treatment of choice. Based on a review of the literature and our own experience, we propose tentative criteria for successful home treatment with the goal of encouraging its use. PMID- 3837573 TI - [Thoughts on the assessment of anamnesis]. PMID- 3837574 TI - [Psychosomatic disorders in children at the start of school: results of questionnaire assessment for early detection]. AB - In a study based on a random sample of children soon to enter first grade a questionnaire designed to elicit information on children's health was filled out by the parents of 590 children (mean age 5-6 years). The subjects were then assigned to mutually exclusive subgroups based on their major current health problem or the absence of any problem (control group). Physical, emotional and psychosocial risk factors in the history of the subjects and of the control group of healthy children were compared. In addition to a general scale of risk factors a special subscale for functional disorders and infectious diseases (e.g. colds) was developed. The findings on the two scales are discussed with reference to developmental factors and the severity and persistence of various disorders. PMID- 3837575 TI - [Catamnestic study of the problem of the course and diagnostic changes in 22 adolescents with affective psychosis]. AB - Among the adolescents seen as inpatients at the University of Gottingen psychiatric hospital in 1972 and 1973, the diagnosis of affective psychosis was made about as often as that of a schizophrenic psychosis, both being rare compared with the total number of children and adolescents treated. At 10- to 11 year follow-up it was found that 4 of the 22 patients with affective psychoses had committed suicide. Only 3 patients had not required subsequent inpatient care. In 2 cases the diagnosis had to be changed to a schizophrenic psychosis, and in 1 to exogenous psychosis. The outcome was more favorable with regard to the subjects' social and occupational development. Most had been able to complete their schooling and to enter their chosen occupation. Only 2 were unemployed. PMID- 3837576 TI - [Child psychiatric clientele and treatment with psychotropic drugs by established physicians in a rural small town area]. AB - Questionnaires were sent to 214 country and small town physicians. Most of the responding physicians reported that they see and treat a substantial number of children with child psychiatric disorders, prescribing psychopharmacological agents about 16% of the time. 40 percent said they prescribe such drugs, whereas 42% said they do not, and 18% expressly rejected such drugs for children. Bedwetting, sleep problems, behavior disorders and hyperactivity were the problems most frequently treated with drugs, most commonly with neuroleptic agents. Parental expectations appear to have had a direct influence on physician prescribing behavior: The stronger these expectations, the more often the physician prescribed drugs. Physician interest in continuing education courses on psychopharmacological treatment was great. The survey results are compared with those of a similar study conducted in Hamburg in 1979 and some problems associated with drug treatment in child psychiatry discussed. PMID- 3837577 TI - [Results and effects of child psychiatric rehabilitation in polymorphic ectodermal dysplasia syndrome]. AB - Since 1929 when ectodermal dysplasia was first mentioned in the literature the syndrome has been described in many case studies and genealogical reports. It has also been the subject of numerous review articles. The present article gives an account of an 8-year old boy who had long been treated under the supposition that he was severely mentally retarded. While he was an inpatient at a psychiatric facility for children and adolescents it became apparent that he had many abilities that had previously gone unnoticed, and it was felt that an intensive treatment program might possibly even lead to full rehabilitation. Upon discharge 3 months later the medical, psychological and social effects of the program were still difficult to pinpoint, but a new phase of development had clearly begun. In the reassessment of this child a totally different type of personality came to light. Because of his outward appearance the boy had till then apparently been regarded as being both somatically and mentally handicapped. The new diagnosis of a primarily somatic disability and a high level of intelligence therefore opened the door to a new developmental process. PMID- 3837578 TI - [Stagnation in psychopathology]. AB - Compared with somatic medicine, there has been very little progress in psychopathology since the turn of the century. In an attempt to determine why, the author makes a critical assessment of several methods used in psychiatric research: the observation and interpretation of behavior, the formulation of hypotheses and experimental research. It becomes evident that researchers are still usually willing to work with psychological terms that are poorly defined. Progress can probably be expected when human behavior is clearly recognized as being the result of the interaction of many different types of capabilities. PMID- 3837579 TI - [Working map of the lampbrush chromosomes of Cynops orientalis]. PMID- 3837580 TI - [An experimental model for the study of the aging of neurons: serum-free culture of mouse neuroblastoma cells]. PMID- 3837581 TI - [Malignant transformation of C3H/10T1/2cells induced by 3H-TdR and its chromosome analysis]. PMID- 3837582 TI - [Symposium: Chronic pancreatitis]. PMID- 3837583 TI - [Chronic pancreatitis]. PMID- 3837584 TI - [2d symposium on the classification of pancreatitis. Marseilles, 28-30 March 1984]. PMID- 3837585 TI - Subtotal pancreatic head resection combined with left pancreatic duct obstruction in chronic pancreatitis. PMID- 3837586 TI - Surgical treatment of pancreatic pseudocysts. PMID- 3837587 TI - [The metabolic outcome of 54 surgical cases of chronic pancreatitis]. PMID- 3837588 TI - Glutathione content in the semen of bulls of the lowland black-white breed. AB - Glutathione concentration in the semen was determined in 113 ejaculates obtained from 30 bulls of the lowland black-white breed. The quantitative and morphological characteristics of the studied sperm samples indicated considerable individual differences but always within normal range. Glutathione content was determined in the plasma and in isolated spermatozoa by the method of Saville (Analyst, 1958, 83, 670). A high glutathione level in the spermatozoa (31 nmols in 10(9) cells) and in plasma (28.8 microM) was found. A positive correlation was demonstrated (p less than 0.05) between the level of the peptide in plasma and its level in spermatozoa. It was found that the glutathione level in spermatozoa was higher in the ejaculates with the cell count below the average level. PMID- 3837590 TI - Effect of selective attention on somatosensory evoked potentials in healthy people. AB - The effect of selective attention on various waves of the somatosensory evoked potentials was studied in healthy people in the area of specific projection (sensorimotor) and the area of non-specific projection (occipital). Significant changes of the amplitude of waves with latency exceeding 55 msec were observed when attention was concentrated on the received stimulus (I and II group of subjects). In group I the process of attention concentration was associated with a phenomenon connected with the new yet unknown experimental situation (prevalence of amplitude increase), while in group II habituation was observed (prevailing amplitude fall). Waves M125 and N200 in the sensorimotor area and N200 and N235-255 in the occipital area seemed to be associated in a peculiar way with the process of attention concentration. PMID- 3837589 TI - The effect of certain anions on muscle resting potential in Tenebrio molitor. AB - Experiments were carried out on longitudinal ventral muscles of the mealworm larva (Tenebrio molitor) using conventional microelectrode methods. Both sodium nitrate and sodium sulphate depolarized the fibres markedly, whereas sodium propionate exerted an hyperpolarizing influence. It is concluded that the differences in the mode of action are due to different permeabilities of the membrane to the applied anions. The results obtained confirm also the concept of a multi-ionic electrode with respect to insect muscle fibres. PMID- 3837591 TI - The mechanism of large, excitation-dependent influx of 45Ca in the guinea-pig ventricular myocardium. AB - In the previous papers (Lewartowski et al. 1982; Pytkowski et al. 1983) we found that excitation-dependent uptake of 45Ca (EDU) ranges in the vascularly perfused guinea-pig ventricular myocardium from 40-359 mumol/kg of wet weight per single steady-state beat or post-rest beat. The present paper describes an attempt to find whether slow calcium channel or Na/Ca exchange provides the route of this large 45Ca influx. We found that EDU during steady-state stimulation (60/min) was completely blocked by both D-600 (1 mg/l) and Ni (2 mmol/l) whereas EDU in post rest beats was blocked only by Ni. Low Na+ perfusion (50 mmol/l) increased transiently EDU in steady-state beats. This surplus EDU was not blocked by D-600 nor by Ni. Noradrenaline infused at the rate sufficient to increase contractile force by 50% at least doubled EDU both in the steady-state and in post-rest beats. It is proposed that Na/Ca exchange does not participate significantly to EDU under physiological conditions. The changes in this uptake evoked by the applied interventions could be expected if its route was provided by the slow Ca channel. PMID- 3837592 TI - The effects of acetylcholine and catecholamines on post-rest phenomena in rabbit and guinea-pig atria and on accompanying shifts of 45Ca in guinea-pig atrial muscle. AB - We studied the pattern of post-rest activation and shifts of 45Ca in the isolated mammalian atrial muscle. The first contraction evoked in the rabbit and guinea pig atrial muscle after 10 min rest was several times stronger than the steady state beats at a rate of 60/min. Contractile force (CF) declined to 20-50% of control during the next 1-3 beats and recovered to the pre-rest level upon subsequent stimulation. The post-rest beats were negligibly affected by noradrenaline (NA), isoproterenol (IS) acetylcholine (ACh), carbachol (CCh) and Ni, whereas the steady-state beats were readily affected by all these drugs or ions. Post-rest potentiation was completely inhibited by caffeine in a concentration of 10 mM. The guinea-pig atria, equilibrated for 60 min in 45Ca containing solution and stimulated at a rate of 60/min, contained 4.47 +/- 0.16 mmol 45Ca/kg wet weight (w.w.). Ten min of rest resulted in a drop of this content to 3.52 +/- 0.13 mmol/kg w.w. despite the continued presence of 45Ca in the superfusing solution. Three initial post-rest beats resulted in further drop of the content of 45Ca to 2.62 +/- 0.14 mmol/kg w.w. Continued post-rest stimulation resulted in a recovery of the pre-rest 45Ca content. This recovery was inhibited by ACh and CCh. Both drugs inhibited 45Ca loss during the initial 3 beats. Neither this loss nor recovery were affected by IS. It is concluded that calcium (Ca) fraction described in the previous papers [11, 15] as Ca2 in the guinea-pig ventricular muscle plays an important role in the force-frequency relations also in the atrial muscle. However, unlike in ventricular muscle only about half of it is released from the cells upon rest whereas the remaining Ca is taken up by the release compartment and used to activate the strong post-rest contraction. It is thereafter extruded from the cells which results in severe depletion of intracellular Ca stores. Fraction Ca2 is re-accumulated during the post-rest stimulation resulting in recovery of the contractile force. PMID- 3837593 TI - The role of gastric mechanoreceptor function in the regulation of behaviour patterns induced with thirst or hunger in rats. AB - In the experiments carried out on 94 rats the role of the function of gastric mechanoreceptors in the regulation of food and water intake was studied. We tried to assess whether this mechanoreception could serve as reinforcement in the induction of an instrumental feeding reflex. Distension of the stomach with a balloon inhibited significantly food intake in free consumption as well as in the instrumental reflex. On the other hand, no such effect was observed on water intake. The trial of development of an instrumental food reflex reinforced with stomach distension gave a negative result. The obtained results are explained as due to an ontogenetically fixed specific mode of food and water intake, and a modified concept of reduction-drive of reinforcement as proposed by Konorski is tentatively suggested for this explanation. PMID- 3837594 TI - Effects of gonadectomy and sex hormones on the levels of noradrenaline and dopamine in rat hypothalamus. AB - The levels of noradrenaline and dopamine were determined in the homogenates of the hypothalamus of rats of either sex. The determinations were done in intact rats, after sham gonadectomy, 6 and 9 weeks after gonadectomy, and in gonadectomized rats receiving 6 weeks after gonadectomy one dose of oestradiol cypionate (females) or testosterone cypionate (males). Catecholamines were determined fluorimetrically. The changes of the determined catecholamines differed in the hypothalamic homogenates in males and females after gonadectomy. Following orchidectomy the noradrenaline level rose, while after ovariectomy the level of this catecholamine decreased. Contrary to this, in ovariectomized rats the dopamine level was significantly raised after the operation. This change was reversible as observed after administration of oestradiol cypionate. Orchidectomy and testosterone cypionate injection had no effect on the dopamine level in the hypothalamus. The role of these catecholamines in the processes connected with the regulation of the hypothalamus-hypophysis-gonad axis is discussed. PMID- 3837595 TI - Progressive enhancement of body temperature responses to consecutive exercise bouts of the same intensity in dogs. AB - Progressive enhancement of body temperature responses to consecutive exercise bouts of the same intensity in dogs. Acta physiol. pol., 1985, 36 (3): 165-174. Changes in rectal (Tre), muscle (Tm), and hypothalamic (Thy) temperatures, plasma osmolality, and some intermediary metabolic variables were examined in dogs performing four successive exercise-bouts of the same intensity. During the rest intervals separating the exercise-bouts body temperatures returned to initial levels and water losses were replaced. Tm and Tre responses to consecutive exercise-bouts were progressively increasing. Similar tendency was found in Thy changes. Cardiac and respiratory frequencies attained the same levels in all four exercise-bouts, while blood lactate and FFA concentrations were increasing and blood glucose level was decreasing progressively. No changes in plasma osmolality was noted. Exercise-induced increases in Tm correlated positively with plasma FFA concentration (r = 0.68). Body temperature responses to exercise were reduced by beta-adrenergic blockade. It is concluded that the enhancement of the thermal responses to consecutive exercise-bouts can be related to the metabolic action of catecholamines. PMID- 3837596 TI - Relationship between postextrasystolic potentiation and slow-phase force frequency response in guinea-pig ventricular myocardium. AB - Relationship between postextrasystolic potentiation and slow-phase force frequency response in guinea-pig ventricular myocardium. Acta physiol. pol. 1985, 36 (2): 175-184. We investigated relationship between postextrasystolic potentiation (PESP) and a form of slow-phase force-frequency relation, namely the post-rest recovery of contractile force (CF). We found that although the degree of post-rest recovery of CF determines CF of the potentiated beats, PESP does not affect the time-course of post-rest recovery, even if it is sustained by means of paired stimulation. Moreover, PESP may be completely or almost completely inhibited by caffeine in 10 mmolar concentration, whereas post-rest recovery is not significantly affected by this drug. We conclude, that PESP and slow force frequency relations are based on separate cellular mechanisms. PMID- 3837597 TI - Effect of age on creatine, nitrogen and phosphorus concentrations in the skeletal muscles of cockerels. AB - Effect of age on creatine, nitrogen and phosphorus concentrations in the skeletal muscles of cockerels. Acta physiol. pol., 1985, 36 (3): 201-207. In the studied life period from the age of 1 to 7 weeks the concentration of nitrogen increased in the muscles and that of phosphorus decreased. The relation between creatine concentration and the share of creatine nitrogen in the total nitrogen pool in the muscles, on the one hand, and the age, on the other hand, was curvilinear; the highest values were observed in cockerels aged 3 weeks. No significant differences were demonstrated in the concentrations of these components between the superficial pectoralis muscle and the deep pectoralis muscle. In the muscles of legs the concentrations of creatine, nitrogen and phosphorus were lower than in pectoralis muscles. PMID- 3837598 TI - Changes of creatine concentration during development of chick embryo. AB - Changes of creatine concentration during development of chick embryo. Acta physiol. pol., 1985, 36 (3): 208-215. Investigations were carried out on embryos of Star Cross chicken after 6, 8, 10, 12, 14, 16, 18 and 20 days of incubation. It was found that the concentration of total creatine increased from 0.18 to 0.67 mg/g of embryo weight. The increase of creatine concentration at the time of development of the embryo was proportional to the increase in nitrogen concentration, and the share of creatine nitrogen in the pool of total nitrogen was about 1% throughout the whole period of embryonal development and during the first two days after hatching. The amount of creatine in fresh egg and in the yolk sac of the newly hatched chicken was about 1.5 mg. It was estimated that chick embryos during their development synthesized, on the average, 18 mg (6 mMol) of creatine. The course of changes in creatine concentration in the developing chick embryo is very similar to the course of changes in the rate of heat production. PMID- 3837599 TI - Determination of conduction times of the peripheral and central parts of the sensory pathway using evoked somatosensory potentials. AB - Determination of conduction times of the peripheral and central parts of the sensory pathway using evoked somatosensory potentials. Acta physiol. pol., 1985, 36 (3): 216-223. Simultaneous recording of the somatosensory evoked potentials (SEP) from Erb's point, neck and scalp allows investigation of the peripheral and central conduction times. The early components of the SEP produced by stimulation of the median nerve at the wrist were recorded using standardized electrode locations in 15 normal subjects. The difference of the latencies between the first peak of the cortical response (N20) and the peak of the neck response (N14) reflects, probably, the conduction time between the dorsal column nuclei and the cortex. Its value was 6 +/- 0.7 msec. The conduction time difference (between peak Erb's point response (N9) and N14) was 5.5 +/- 0.5 msec and it reflected the peripheral conduction time. For diagnostic application the lower limit of the response amplitudes was determined also for every component. PMID- 3837600 TI - Sleep pattern in the starling (Sturnus vulgaris). AB - Electrographic and behavioural observations were conducted on two male and two female captive starlings (Sturnus vulgaris) under natural illumination conditions during autumn. Polygraphically sleep and wakefulness of starling were similar to those of other birds. Starling's total sleep (TS) and slow wave sleep (SWS) lasted 39.0 +/- 1.4% and 38.3 +/- 1.7% of the 24-h period respectively. Paradoxical sleep (PS) was 1.8 +/- 0.2% of the total sleep time. The mean durations individual of TS, SWS and PS episodes were 6.8 +/- 0.2 min, 5.0 +/- 1.0 min and 18 +/- 3 s respectively. The daily percentage of SWS was correlated with the mean episode duration while that of PS was correlated with the number of episodes rather than with the mean episode duration. Starling females spent in sleep a greater percentage of the 24-h period than males. PMID- 3837601 TI - The neurohypophyseal vasopressin content under conditions of inhibited synthesis of prostaglandins in euhydrated and dehydrated rats. AB - Rats euhydrated or dehydrated up to eight days were given intraperitoneally indomethacin (IM) twice daily in a dose of 0.2 mg/100 g of initial body weight. A single dose of IM injected to euhydrated animals did not affect the neurohypophyseal vasopressor activity; however, when administered repeatedly during four or eight days, IM increased significantly the neurohypophyseal vasopressor activity. Under conditions of severe dehydration (eight days of water deprivation) the known depletion of neurohypophyseal vasopressin store was not significantly affected by indomethacin. It is, therefore, suggested that impulses of osmoreceptor origin are of distinct importance in determining the function of vasopressinergic neurons under conditions of inhibited prostaglandin synthesis. PMID- 3837602 TI - Estimation of changes in renal tissue electrolytes from measurements of electrical admittance: application in the rat. AB - Alterations of cortico-papillary electrolyte gradient of the kidney can now be evaluated by continuous recording of tissue electrical admittance (a reciprocal of impedance), a variable changing directly with tissue concentration of free ions. Measurements are performed with needle electrodes placed in different zones of the in situ kidney, and it is then possible to follow the dynamics of changes in medullary electrolyte concentration. This approach, described recently from our laboratory, has so far been used in large animal species (dogs and rabbits). The present work describes an adaptation of the method for its use in the rat, accomplished by reducing the number and size of electrodes and a modification of their geometry. This satisfactorily minimized kidney damage secondary to insertion of electrodes. The information derived from admittance studies in the rat can be readily compared with numerous data on tubular transport of electrolytes obtained in this animal species. PMID- 3837603 TI - ATP and 2,3-diphosphoglycerate changes in the erythrocytes of hyperammonaemic sheep. AB - The experiment was conducted on sheep receiving NH4Cl infusions into v. mesentericta anterior. During first 3 h animals received ammonia in a dose of 13 mumol X min-1 X kg body wt.-1 and then next 3 h in a dose of 30 mumol X min-1 X kg body wt.-1. When ammonia was administered in smaller doses its concentration increased to 0.65 and 0.22 mmol/l in portal and peripheral blood, respectively. Simultaneous slight increase of ATP and marked of 2,3-diphosphoglycerate (2,3 DPG) was observed. These effects of moderate ammonia loading are probably caused by the rise of glucose utilization in erythrocytes. Ammonia given in a higher dose induced further rise of its concentration to 1.1 and 0.51 mmol/l in portal and peripheral blood, respectively. Such NH4Cl infusion caused a further rise of 2,3-DPG concentration connected with the drop of ATP level in ovine red blood cells. It seems that a decrease of ATP level was mainly the result of local high 2,3-DPG level which inhibits glycolytic enzymes. PMID- 3837604 TI - The effect of prostaglandins E1, E2, F1 alpha and F2 alpha on pig erythrocytes during haemolysis induced with aspirin and hypotonic NaCl solution. AB - The effect of prostaglandins PGE1, PGE2, PGF1 alpha and PGF2 alpha was investigated on the haemolysis of pig erythrocytes induced with aspirin and hypotonic (0.119 M) NaCl solution. An inhibiting effect was observed of low concentrations (2 X 10(-5) M, 2 X 10(-4) M and 2 X 10(-3) M) of aspirin on haemolysis induced with hypotonic NaCl solution, while in a concentration of 2 X 10(-2) M aspirin itself caused haemolysis which amounted to 93% of the haemolysis induced with 0.041 M NaCl solution. No differences were observed in the degree of haemolysis inhibition in relation to the time of incubation of erythrocytes with aspirin. Aspirin concentrations from 0.035 M to 0.280 M caused slight haemolysis (9-15% of the haemolysis induced with water), the 0.560 M solution caused haemolysis corresponding to 85% of the water-induced haemolysis. None of the studied prostaglandins used in concentrations of 0.4 X 10(-3) M, 0.4 X 10(-4) M and 0.4 X 10(-5) M had any significant effect on aspirin-induced haemolysis. PGE1 and PGE2 in concentrations of 0.4 X 10(-3) M, 0.4 X 10(-4) M and 0.4 X 10(-5) M inhibited haemolysis induced with 0.119 M sodium chloride solution, and the degree of haemolysis inhibition was from 8% to 35%. Prostaglandins PGF1 alpha and PGF2 alpha in the same concentrations had no protective effect. PMID- 3837605 TI - Glutathione concentration and peptidase activity in the lens after exposure to microwaves. AB - This study was undertaken for observation of early changes in glutathione concentration and the activity of carboxypeptidase A and aminopeptidase in the cortex and core of the lens as well as for determination of the cumulating effect of microwave energy after repeated exposures to microwaves. Experiments were carried out on New Zealand rabbits. The control group was compared to experimental groups exposed every day for 5 minutes to microwave irradiation of the eyeballs at power densities of 5 X 10(-3) W/cm2 and 10 X 10(-3) W/cm2 during 10, 20 and 30 days. Differences were found between the control group and the groups of animals exposed to microwaves in which the glutathione concentration in the cortex and core of the lens was decreasing with time in proportion to the number of exposures. Parallelly to the number of days of exposure to microwaves the enzymatic activity of carboxypeptidase A and aminopeptidase increased in the cortex of the lens. The observed changes demonstrate cumulation of the absorbed microwave energy leading to changes in the permeability of the capsule and membranes of lenticular fibres which lead to secondary metabolic disturbances in the lens of the eye. PMID- 3837606 TI - Assessment of the character and incidence of electrocardiographic changes in children with simple obesity. AB - The studied group comprised 82 children with simple obesity. In the group the character and frequency of ECG changes in 12 conventional leads were analyzed. A correlation was established between the character and frequency of these changes and the degree of overweight and obesity duration. In children with simple obesity a considerable prevalence was observed of disturbances of sinus rhythm, impairment of intraventricular conduction and signs of left ventricular hypertrophy. The observed changes were more frequent in children with over 5 years of obesity duration. No correlation was demonstrated between the incidence of these changes and the degree of overweight. PMID- 3837607 TI - The effect of chronic administration of angravid on the guinea pig liver--some functional and morphological aspects. PMID- 3837608 TI - Mineralization of bone tissue in chronic renal failure. PMID- 3837609 TI - Five-year prospective study of peripheral white blood cells in infectious mononucleosis. PMID- 3837610 TI - Effect of cyclic nucleotides on apomorphine stereotypy and chlorpromazine catalepsy in mice. PMID- 3837611 TI - Behaviour of rats and brain biochemical changes under the effect of kainic acid, dopamine, nicotine and muscarine administered into the caudate nuclei. PMID- 3837612 TI - Fractionation of castor bean allergens (CB-1A). Isolation of RC-13, a homogeneous allergenic fraction. AB - Allergens from castor beans (CB-1A) were fractionated by ion-exchange chromatography both on CM- and SP-Sephadex, employing pH gradient. SP-Sephadex showed better results and fractionated the allergens into 7 components, eluted in a narrow pH range (5.0 - 6.6). An attempt to isolate the major acidic fraction of the group involved successive chromatographic steps on the same gel. RC-13, the isolated fraction, proved homogeneous by rechromatography on SP-Sephadex and isolectric focusing with pH range 3.0 - 10.0 polyacrylamide gel. The pl of RC-13 determined by the latter is approximately 4.2 and allergenic activity was demonstrated by heterologous passive cutaneous anaphylaxis in mice using anti-CB 1A rabbit serum. PMID- 3837614 TI - [Latero-cervical tumefactions. Considerations of differential diagnosis and surgical therapy]. PMID- 3837613 TI - Kinetic study of hemoglobin Porto Alegre [beta 9(A6)Ser----Cys] disulfide polymer reduction. AB - The cleavage of HbPA disulfide polymer by GSH and its indirect cleavage by yeast glutathione reductase, via reduced glutathione is obtained. Decreasing the initial proportion of GSH in the hemolysate increases the formation of HbPA disulfide polymer. In the experimental conditions used, yeast glutathione reductase is unable to perform the direct cleavage of the mixed disulfide of HbPA and GSH, using it as substrate. The reduction of HbPA polymer to tetramers by DTE is analyzed by a pseudo-first-order kinetic and two rate constants are obtained. That of 265 X 10(-3) min-1 should be concerned with one disulfide of the closed ring and one of the open ring structure of dodecamer, while that of 38 X 10(-3) min-1 is related to disulfide reduction of the octamer. The enthalpy of activation values of 8.0 kcal.mol-1 an 17.4 kcal.mol-1 obtained, from the Arrhenius plot, for the "fast" and "slow" rate disulfide reduction, respectively, are indicative that a strong conformational strain of S--S bonds in the closed ring structure is maintained. The entropy of activation values of 24 e.u. and 52 e.u. are found for the activation of disulfides from dodecamers and octamers, respectively. PMID- 3837615 TI - [Mechanical and antimicrobial preparation of the colon for resection operations. Modern aspects]. PMID- 3837616 TI - [Surgical treatment of neoplasms of the bile ducts in the light of endoscopic retrograde cholangiopancreatography]. PMID- 3837617 TI - [The significance of skin tests in the surgical patient]. PMID- 3837618 TI - [Bacterial contamination of colonic sutures. Experimental study in the rabbit]. PMID- 3837619 TI - [Detection and determination of antioxidants in plastic materials with a polyolefin base]. PMID- 3837621 TI - [Gloriosa superba L. and the production of colchicinic substances]. PMID- 3837620 TI - [Chronobiologic aspects of the effect of methotrexate on dihydrofolate reductase]. PMID- 3837622 TI - [Plants from New Caledonia. Alkaloids from Melodinus insulae-pinorum Boiteau]. PMID- 3837623 TI - [Radiosensitizing properties of an analog of azathioprine]. PMID- 3837624 TI - [Permanganate oxidation of ethylbenzene in the presence of quaternary ammonium]. PMID- 3837625 TI - [Interaction of disinfectants with cleansing products]. PMID- 3837626 TI - [The mugwort: Artemisia vulgaris L. and Artemisia verlotiorum Lamotte]. PMID- 3837627 TI - [The anti-platelet aggregation action of asymmetric triazines]. PMID- 3837628 TI - [5th French Congress of Endocrinology. Bordeaux, 3-5 October 1985]. PMID- 3837629 TI - [Update on anorexia nervosa]. AB - Anorexia nervosa is an adolescent pathology of the present. Its frequency is increasing in the western countries. New data concerning the criteria of diagnosis, the evolution, the prognosis, the psychopathology and the treatment have been drawn of numerous recent studies and are exposed in the paper. PMID- 3837631 TI - [Symposium: Pathology and physiology of growth]. PMID- 3837630 TI - [Nuclear magnetic resonance spectroscopy. New tool for investigating cellular metabolism in living systems]. AB - Nuclear magnetic resonance spectroscopy is increasingly used to study cellular metabolism in a manner respecting cell integrity. The contribution of phosphorus 31 and carbon-13 NMR is discussed and illustrated by specific examples taken from work carried out in this laboratory or from the literature. A particular emphasis is layed on metabolite identification, quantitation and fluxes as studied by phosphorus-31 NMR which provides a direct insight of energy metabolism. The analysis of perfused rat liver by natural abundance carbon-13 NMR illustrates the potential of the method of study non-invasively lipid and carbohydrate metabolism in living systems. The use of carbon-13 enriched substrates to pinpoint a specific pathway of the intermediary metabolism is described in the case of excised rat heart and liver perfused with (2-C13)-acetate. Clinical applications of NMR spectroscopy are rapidly reviewed. PMID- 3837632 TI - [Symposium: Mid- and long-term results of selective pituitary adenectomy]. PMID- 3837633 TI - [Symposium: New markers in hormone-dependent cancers]. PMID- 3837634 TI - [Symposium: Use of stable isotopes in human biology]. PMID- 3837635 TI - [Complications of argon laser treatment of posterior segment disorders]. PMID- 3837636 TI - [Advantages and disadvantages of various lasers]. PMID- 3837637 TI - [The nontherapeutic use of lasers]. PMID- 3837638 TI - [The future of implanted eyes]. PMID- 3837639 TI - [Vitrectomy in retinal detachment]. PMID- 3837640 TI - [Posture and vision (review)]. PMID- 3837641 TI - [Current practical perimetry]. PMID- 3837642 TI - [Lasers in peripheral retinal degeneration]. PMID- 3837643 TI - [Vitreoretinal strategy in perforating injuries of the posterior segment]. PMID- 3837644 TI - [Refractive corneal surgery]. PMID- 3837645 TI - [Retinal vein occlusion and lasers]. PMID- 3837646 TI - [Retinoschisis and lasers]. PMID- 3837647 TI - Characteristics of the tonic stretch reflex in spastic spinal cord and head injured patients. AB - Spasticity is a known sequelae of spinal cord injury and head injury. We sought to examine whether there were any significant differences in the characteristics or underlying mechanisms of spasticity in these two groups in the chronic period which may be related to the level of injury of the neuraxis. The response to vibration applied to the muscle, or the tonic vibratory reflex, has been shown to be related to the degree of spasticity, and was therefore studied along with phasic reflexes and passive movements. These studies were carried out on cooperative, stabilized patients who were otherwise healthy, 5 with head injuries, and 5 with spinal cord injuries. The patients were examined in a supine position while surface EMG recordings were made of quadriceps and triceps surae muscles bilaterally. Tendon jerk responses, passive and volitional movements, and responses to a powerful vibratory stimulator were measured. In both head injury and spinal cord injury patient groups, a large EMG response was elicited by passive maneuvers, and tendon jerks were exaggerated. The tonic vibratory response, previously shown to be dependent upon brain influence, was present in both groups. These observations suggest that similar suprasegmental mechanisms may be responsible for hypertonia in both head-injured and spinal cord-injured patients. PMID- 3837648 TI - The spread of somatosensory-evoked potentials within the nervous system. AB - Four thalamic and cortical recordings were carried out in 5 patients. The thalamic-evoked potentials were typical and revealed a triphasic complex, but their latencies showed a relatively high standard deviation. They could be divided into two groups according to their latencies, both of which had low SD. These data suggested that there could be two types of latency of thalamic SEP, because the 4 patients' body sizes were very similar. More detailed surface, cortical and depth recordings are needed to resolve these questions. PMID- 3837649 TI - A method for bulbospinal trigeminal nucleotomy in the treatment of facial deafferentation pain. AB - Many types of facial pain are difficult to treat, such as postherpetic, posttraumatic, or pain following denervation procedures used in the treatment of trigeminal neuralgia (anesthesia dolorosa), all of which involve deafferentation of the spinal trigeminal nucleus. PMID- 3837650 TI - Plastic change of thalamic organization in patients with tremor after stroke. AB - Thirteen patients with tremor after stroke were treated by stereotactic thalamotomy. Prior to making therapeutic lesions, microrecordings were tried and the findings were compared with our own results obtained in Parkinson's disease. Several characteristic features were revealed in terms of changes in electrical activity in and around the thalamic Vim nucleus. These findings support the idea that reorganization of the thalamic sensory nuclei might take place. PMID- 3837651 TI - Cell sparse zones in the ventrolateral thalamic mass in humans, monkeys and cats: their special reference to kinesthetic neurons. AB - The Vim nucleus of the human thalamus is the cell sparse zone. The neurons in this zone respond to peripheral stimuli of kinesthetic modality with a short latency. In the cytometrical study, the cell sparse zone is identifiable in both the monkey and cat thalamus. The cell dimension and density in a 1 mm2 area in the cell sparse zone of each species are as follows: humans--large neuron 500-900 microns2, medium neuron 200-400 microns2, cell density 60-90/mm2/50 microns thickness; monkeys--large neuron 400-800 microns2, medium neuron 200-400 microns2, cell density 120-250/mm2/50 microns thickness; cats--large neuron 400 800 microns2, medium neuron 200-400 microns2, cell density 120-250/mm2/50 microns thickness. In this zone, there are large and medium thalamocortical relay neurons defined by the Golgi impregnated and HRP studies. It is still obscure which neurons respond to kinesthetic stimulation and which neurons or afferent fibers play important roles in the tremor mechanism. PMID- 3837652 TI - Foramen ovale electrodes: a new technique enabling presurgical evaluation of patients with mesiobasal temporal lobe seizures. AB - A recently developed technique to record from the mesiobasal aspect of the temporal lobes by subdural electrodes inserted through the foramen ovale is described. Experience with this technique in 13 candidates for surgical epilepsy therapy is presented. Our results indicate that interictal epileptiform potentials as well as ictal discharges are reliably picked up by the foramen ovale electrode whenever nucleus amygdallae, hippocampus and parahippocampal gyrus show synchronous epileptic activity. The advantages of this technique are discussed. PMID- 3837654 TI - [28th annual meeting of the Sociedad de Biologia de Chile. Abstracts]. PMID- 3837653 TI - Microsurgical selective procedures in peripheral nerves and the posterior root spinal cord junction for spasticity. AB - This review deals with the long-term results of selective peripheral neurotomy (SPN) of the tibial nerve and selective posterior rhizotomy (SPR) in 123 cases of severe spastic syndromes in the limbs. The microtechniques and preoperative electrostimulation for identification of the nervous structures responsible for the spastic components give to these methods an advantage of a substantial reduction of the harmful spasticity, without suppressing the useful muscle tone and impairing the residual motor and sensory functions. The results were effective, with a 1- to 13-year follow-up, in 89% of 47 SPN of the tibial nerve for spastic foot, in 92% of 53 SPR for paraplegia and in 87% of 23 SPR for hemiplegia. PMID- 3837655 TI - [Use of transhepatic drainage in repair of the main bile duct]. AB - The transhepatic intubation to treat and minimize recurrent stricture after hepaticojejunostomy is analysed. This method was used in seven patients. Three of them had a malignant biliary stricture and four had bile duct injury during cholecystectomy. In four occasions the reconstruction of right and left hepatic ducts were done separately. In two the anastomosis with the jejunum was performed with the left hepatic duct and ducts of medial and lateral segments of right hepatic lobe and in two hepaticojejunostomy was performed. The transhepatic tube was maintained for three to ten months. The patients with malignant disease died after ten days, 35 days and nine months. In the four patients with benign disease, two had an excellent response. One did not and in one the follow up is short to assess the final result. The advantages and disadvantages of transhepatic intubation are discussed. PMID- 3837656 TI - [Isoniazid acetylation in Gilbert's syndrome]. AB - Phenotyping of isoniazid acetylators in 19 Caucasoid patients with Gilbert's syndrome was achieved by evaluating the percentual of acetylisoniazid in the urine. The proportion of slow acetylators among the patients with Gilbert's syndrome was similar to those found among Caucasoids of control group. The conclusion was that Gilbert's syndrome doesn't interfere in the hepatic capacity of isoniazid acetylation. PMID- 3837657 TI - [Spontaneous perforation of the cecum without colonic obstruction. Report of 3 cases]. AB - Spontaneous perforation of the colon without obstruction is related to intestinal and extra intestinal diseases, mainly gynecological procedures. Its etiology is unknown, and there are many theories. Because of its diagnosis peculiarities, as well as its rarity, and mainly the severity of the disease, the authors describe three cases, relating the necessity of early diagnosis and correct surgical treatment. PMID- 3837658 TI - [Articular manifestations of inflammatory bowel disease]. AB - A review of articular manifestations of ulcerative colitis and Crohn's disease is presented. The concept of seronegative spondyloarthropathies is examined. The differences between the form, compromising only the appendiculary skeleton, whose articular manifestations have a correlation with disease activity and, with the form, compromising the axial skeleton, mimetizing ankylosing spondylitis in which articular manifestations have their course independent of intestinal activity. The treatment of articular manifestation, with special emphasis to the importance of physiotherapy in the treatment of axial skeleton alterations is discussed. PMID- 3837659 TI - [Experimental dilatation of the cecum and colon in rats. II. Reversion after induction by the continuous administration of lactose]. AB - Fifty female Wistar weanling rats were fed a laboratory diet containing lactose (25 g/100 g of the final mixture) during 28 days. Following this period the lactose was substituted isocalorically by saccharose (25 g/100 g of the final mixture) and the diet given to the animals for 21 days. Thirty control rats of the same sex and weight received a laboratory diet containing saccharose (25 g/100 g of diet) during 49 days. The animals were weighed weekly. Subgroups of experimental and control rats were sacrificed at days 28, 30, 32, 35, 42 and 49. Rats given a diet containing lactose showed restriction of body weight gain. Upon rehabilitation the body weight of these animals increased rapidly. The external volume of the cecum and colon showed a significant increase during the 28-day period. After nutritional rehabilitation this change reduced gradually, beginning in the first week. Although the weight of the cecum reduced gradually during the rehabilitation period, the values were slightly augmented at day 49 as compared to controls. In conclusion, in the conditions of the present study, the consequences on the cecum and colon of adding lactose to the diet of rats are not persistent. PMID- 3837660 TI - [Intestinal absorption of fats in children using serum turbidity and triglyceride absorption tests]. AB - Intestinal fat absorption was studied, using serum turbidity and serum triglyceride levels, which were determined before and after a test meal of 2 g neutral fat per kg b.w. in 33 children: 25 controls, four with cystic fibrosis, and four with celiac disease. The results proved that the easy-to-perform serum turbidity test was superior to the triglyceride absorption test in characterizing fat digestion and absorption. The most substantial increase in both tests occurred about three hours after the oral fat load. PMID- 3837661 TI - [Clinical conference at the Brazilian Institute for Study and Research in Gastroenterology]. PMID- 3837662 TI - Necator americanus and Ancylostoma duodenale in Dhaka city. PMID- 3837663 TI - Gilbert's syndrome--report of six cases. PMID- 3837664 TI - Prevalence of caries in urban children and its relation to feeding pattern. PMID- 3837665 TI - Incidence of hookworm among the workers in tea garden. PMID- 3837666 TI - Lipoprotein pattern in diabetics of Bangladesh. PMID- 3837668 TI - Combined hyperthermia and cis-diamminedichloroplatinum in BD IX rats with transplanted BT4A tumours. AB - Effects on tumours and toxicity of locally applied waterbath hyperthermia (44 degrees C, 60 min) and cis-diamminedichloroplatinum (cis-DDP) were investigated in BD IX rats with transplanted BT4A tumours on the hind foot. The effect of cis DDP at doses of 2, 3 and 4 mg/kg measured as tumour growth time, defined as time to reach five times the tumour volume at treatment, increased in a drug dose dependent manner by using hyperthermia. Moderate systemic hyperthermia at a mean of 41 degrees C during the second half of the treatment also increased the tumour regrowth delay of cis-DDP. Skin reactions after local hyperthermia did not increase in this cis-DDP dose range, but systemic toxicity of the drug was markedly enhanced by hyperthermia. At histological evaluation, hyperthermia at 44 degrees C resulted in marked vasodilatation, red blood cell pooling and haemolysis, with a seemingly almost complete central tumour perfusion shutdown lasting up to five days after treatment. The combination of cis-DDP and hyperthermia resulted in additional cell death especially at the tumour periphery and at depth near the tendon and muscle. This in vivo study confirms in vitro data indicating cis-DDP as a candidate for clinical trials combined with hyperthermia. As both the tumour and systemic side effects of cis-DDP are enhanced by hyperthermia, caution is advocated when applying high drug doses with systemic hyperthermia. PMID- 3837667 TI - Carnitine prevents the early mitochondrial damage induced by methylglyoxal bis(guanylhydrazone) in L1210 leukaemia cells. AB - We previously found that the anti-cancer drug methylglyoxal bis(guanylhydrazone) (mitoguazone) depresses carnitine-dependent oxidation of long-chain fatty acids in cultured mouse leukaemia cells [Nikula, Alhonen-Hongisto, Seppanen & Janne (1984) Biochem. Biophys. Res. Commun. 120, 9-14]. We have now investigated whether carnitine also influences the development of the well-known mitochondrial damage produced by the drug in L1210 leukaemia cells. Palmitate oxidation was distinctly inhibited in tumour cells exposed to 5 microM-methylglyoxal bis(guanylhydrazone) for only 7 h. Electron-microscopic examination of the drug exposed cells revealed that more than half of the mitochondria were severely damaged. Similar exposure of the leukaemia cells to the drug in the presence of carnitine not only abolished the inhibition of fatty acid oxidation but almost completely prevented the drug-induced mitochondrial damage. The protection provided by carnitine appeared to depend on the intracellular concentration of methylglyoxal bis(guanylhydrazone), since the mitochondria-sparing effect disappeared at higher drug concentrations. PMID- 3837669 TI - Muscular and intraocular pressure responses among ocular-hypertensive subjects: is there a rationale for biofeedback? AB - Several animal and human investigations have indicated that intraocular pressure (IOP) levels may be associated with extreme drug-induced changes in the extraocular muscles. Further, recent data suggest that, among individuals with normal IOP level, moderate increases in facial muscle (EMG) activity around the eye while the eye is open are associated with increases in IOP. To investigate further the relationship between facial EMG activity and IOP levels and to examine a group of individuals with elevated IOP levels, subjects were recruited from outpatients at an optometry clinic. Three groups of subjects were selected: a group of ocular hypertensive subjects who showed elevated pressures at the optometry clinic and upon the day of testing, a group of labile ocular hypertensive subjects who evinced elevated pressures during their visit to the optometry clinic but lower pressures on the day of testing, and a group of normal IOP subjects who showed normal pressures both during their optometry clinic visit and on the day of testing. To investigate anxiety differences, subjects were administered the State-Trait Anxiety Inventory, but subsequent analysis revealed no group differences. To evaluate the role of stress upon muscle (EMG) functioning around the eye, subjects were subjected to imagery and standardized mental arithmetic stressors; analyses of these results also revealed no significant group differences. Finally, subjects were given EMG biofeedback for muscle activity around the eye while IOP was assessed during five alternating periods in which they made decreases and increases in EMG activity. Results revealed significant group, period, and group by period interaction effects. The pattern of results is interpreted as implicating EMG activity in IOP fluctuations; the implications of these data for potential biofeedback and stress management treatments are discussed. PMID- 3837670 TI - Accuracy of subjective blood glucose estimation by patients with insulin dependent diabetes. AB - A between-groups design using a baseline, treatment, follow-up procedure was used to investigate the accuracy of 20 patients with insulin-dependent diabetes when subjectively estimating their blood glucose levels. Patients were encouraged to attend to their mood for cues when making estimates of their blood glucose. Their capacity for reducing estimation errors when given immediate or delayed feedback of actual blood glucose was examined. The results showed that neither delayed nor immediate feedback produced a significant improvement in the mean estimation accuracy of these groups of patients or in their ability to predict whether their blood glucose was in the acceptable or unacceptable range. Patients were particularly inaccurate in detecting Low [less than 4.0 mmol/L (less than 72.0 mg/dl)] and Very High [greater than 16.0 mmol/L (greater than 288.0 mg/dl)] blood glucose levels. Examination of mood-blood glucose relationships revealed consistent patterns for individual subjects and considerable differences between subjects. PMID- 3837671 TI - Effects of biofeedback-assisted attention training in a college population. AB - A program of stress management employing open-focus attention-training workshops was developed at Baruch College to bring the benefits of stress reduction to students. The purpose of the research reported here was to evaluate the results of the open-focus attention-training technique. Open-focus technique without biofeedback training was used for two semesters. Biofeedback training was incorporated in the third semester. In the first study, changes in grade point average (GPA), stress-related symptoms, and physiological measures were examined. The experimental subjects' stress data for this study was reported previously (Valdes, 1985). In the second study, changes in the same variables for experimental and control subjects were evaluated. Students in the control group showed decreased GPA, while those who participated in open-focus training showed a trend toward improved GPA. Stress-related symptoms associated with anxiety and management of emotional problems showed significant posttraining improvement, as did physiological measures in all of the biofeedback modalities in which the experimental subjects were specifically trained. The results support the hypothesis that the workshops were successful in reducing stress levels, and suggest that further controlled research be conducted to verify these findings, and to identify the most effective components of the training procedure. PMID- 3837673 TI - [Changes in the degradation time for acetylcholine receptors in relation to age]. AB - A 125I-bungarotoxin labelling study of the acetylcholine receptor on the nerve muscle junctions in the course of aging in the rat is reported. Attention is drawn to the fact that aging leads to an appreciable slowing down of the receptor degradation time, whereas no change occurs in its location. PMID- 3837672 TI - Biofeedback for the treatment of anal incontinence in a child with ureterosigmoidostomy. AB - The case of a 7-year-old boy born with exstrophy of the bladder is presented. Biofeedback and behavioral therapy were employed in the treatment of anal incontinence, which occurred following ureterosigmoidostomy diversion. After 19 treatment and follow-up sessions over a period of 12 months, there was significant decrease in fecal/urinary incontinence. The patient was soiled 29% of waking hours over the first 4 weeks of treatment. This figure dropped to 9.7% over the last three sessions. Subjective satisfaction of parent, child, and teachers was high. These gains were maintained over a 12-month follow-up period. Given the design of the present study, it is not possible to determine whether the biofeedback per se had a specific treatment effect. The case demonstrates the usefulness of a broad-based behavior therapy in the management of fecal/urine soiling, which is a frequent, refractory complication of ureterosigmoidostomy. PMID- 3837674 TI - [Changes in the degradation time for acetylcholine receptors in relation to age. The bronchial tree of the rabbit]. PMID- 3837675 TI - [Arterial vascularization of the thyroid gland in the rabbit]. PMID- 3837676 TI - [Various aspects of the microvascularization of the thyroid follicles in the rabbit]. AB - The authors, use histology and diaphanization after the injection of Micropaque 25% with gelatin 10% in 35 rabbits, 25 female and 10 male, with race, weight and age variable, to show some aspects of the thyroid follicles microvascularization. In this experimental animal we observe a follicle vascularization like the one described by other authors. PMID- 3837677 TI - [Innervation of the pulmonary vessels: autonomic microganglia]. AB - It's being studied through the technics of Koelle-Friedenwall for the detection of specific acetyl-cholinesterase, that of Champy-Maillet of tetroxide osmium iodine of zinc and that of Jabonero's silver carbonate, the microganglions existing in pulmonary vessels. The attained results with Koelle-Friedenwall's technics were negative. With the other two technics we have observed small microganglions attached to the adventitial layer of pulmonary vessels, as much arteries and veins. In one case, we have realised the existence of a neuronal conglomerate inside the adventitial itself. They are formed by a scarce number of neurons, type I from Dogiel. We believe, due to its localization, that they are of a parasympathetic nature. PMID- 3837678 TI - [Ultrastructural study of the Sertoli cell in the seminiferous tubules of a hibernating animal, Eliomys quercinus L.), living in different lighting conditions]. AB - The ultrastructure of the Sertoli cell studied in sexually active control animals during May-June and experimental animals sexually activated by light in winter, presents the commonly described ramified aspect with an infolded nucleus, well developed Golgi complexes, rough and smooth endoplasmic reticulum, numerous microfilaments, few liposomes and lysosomal formations; In the regressed testes of hibernating animals or blinded spring animals, the Sertoli cells are more round shaped with a significant increase in number and size of liposomes, lysosomes and various necrotic bodies. These morphological changes may be in favour of the possibility of a synchronization of the function of the Sertoli cell with the spermatogenic cycle to coordinate locally the proliferation and maturation of the germ cell. PMID- 3837679 TI - Care of the elderly--the way ahead? PMID- 3837680 TI - Vocational training for general practice--achievements of the last 15 years. PMID- 3837682 TI - The benzodiazepines and insomnia. Papers from symposia. VII World Congress of Psychiatry, Vienna, July 1983; and 14th CINP Congress, Florence, June 1984. PMID- 3837681 TI - The doctor and the snake. PMID- 3837683 TI - Benzodiazepine activity: the sleep electroencephalogram and daytime performance. PMID- 3837684 TI - Dependence potential of the benzodiazepines: use of animal models for assessment. PMID- 3837685 TI - Benzodiazepine abuse and dependence: an overview. PMID- 3837686 TI - Insomnia: an epidemiological survey. PMID- 3837687 TI - Quazepam: sleep laboratory studies of effectiveness and withdrawal. PMID- 3837689 TI - Cardiac arrhythmias: electrophysiologic techniques and management. PMID- 3837688 TI - Effects of quazepam and triazolam on the sleep of chronic insomniacs: a comparative 25-night sleep laboratory study. PMID- 3837690 TI - Catheter electrocoagulation of serious cardiac arrhythmias. AB - During recent years, catheters (originally designed for intracardiac recording and pacing) have been used for purposes of electrocoagulation of the AV junction, accessory pathways, or ventricular tachycardia foci. The experience to date suggests that catheter ablation of the AV junction is a reasonable alternative for patients with drug-refractory supraventricular tachycardia who are deemed candidates for surgical division of the His bundle. Complete or partial success is expected in approximately 85 percent of patients, and thus significant numbers of patients may be spared the morbidity and expense of surgery. The available experience using catheter ablation for accessory pathways is limited, and thus definitive recommendations cannot be made. Early experience suggests that patients with posteroseptal accessory pathways who require surgical intervention may benefit from attempted catheter ablation. Although successful catheter ablation of ventricular tachycardia foci has been reported, technical problems relating to current endocardial mapping techniques, the demonstrated proarrhythmic effects of the shocks in animals, and the very limited clinical experience suggest that this use be considered highly experimental at present. PMID- 3837691 TI - Selection of antiarrhythmic drugs based on electrophysiologic studies. PMID- 3837692 TI - Electrophysiologic studies of the ventricle. AB - Electrophysiologic assessment of ventricular tachyarrhythmias involves the application of paced ectopic beats at the discretion of the cardiologist and not by chance. Because this approach reproducibly induces the sort of symptomatic arrhythmias that are the major cause of death in our country, the procedure has attracted widespread interest. This methodology has accomplished two important alterations in the orientation of physicians to ventricular arrhythmias and sudden death. First, it has turned our focus away from innocent events such as ectopic beats and directed our attention to the architectural and electrophysiologic abnormalities that are the structural substrate for tachyarrhythmias. Second, it has taught us that malignant arrhythmias and sudden death can be treated empirically by repeatedly inducing VT under controlled conditions until a treatment is found. The physiologic and pharmacologic insight obtained with these early experiences will hopefully enable us to treat patients without the need for producing potentially lethal arrhythmias. PMID- 3837693 TI - Purification and characterization of a cytotoxic factor produced by a mouse macrophage hybridoma. AB - A mouse macrophage cytotoxic factor was purified to homogeneity from the serum free culture supernatant of a mouse macrophage hybridoma clone, N/P-7-1, stimulated with lipopolysaccharide by gel filtration, affinity chromatography, anion-exchange chromatography, and polyacrylamide gel electrophoresis. The purified material was judged to be homogeneous as to the criteria of sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and has a relative molecular mass of 17,500, as determined by SDS-PAGE, or 55,000, as determined by gel filtration on columns of both Sephacryl S-200 and TSK G3000SW. It has an isoelectric point of 5.0, and is trypsin sensitive, stable at 56 degrees C and labile at pH less than 6. The cytotoxic activity of the purified factor could not be inhibited by various sugars and lectins. The production of the factor from N/P 7-1 triggered by macrophage-activating factor for cytotoxicity, but not by mouse recombinant gamma-interferon. The factor should be synthesized after lipopolysaccharide stimulation because treatment of N/P-7-1 cells with a metabolic inhibitor, emetine or actinomycin D, prevents the production. PMID- 3837694 TI - Physicochemical characterization of human fibroblast migration inhibitory factor. AB - We recently reported a new lymphokine activity that affects fibroblasts by inhibiting their spontaneous migration. Human fibroblast migration inhibitory factor (FIF) obtained from concanavalin A (Con A)-stimulated human lymphocytes was characterized by Sephadex gel filtration and by enzyme treatment. FIF was found to be stable at 56 degrees C for 15 min but destroyed at 80 degrees C or at pH lower than 5. Gel filtration revealed two peaks of FIF activity 15,000 and at 34,000 Da. FIF activity was lost following treatment with trypsin, chymotrypsin, and neuraminidase and FIF could not be generated in the presence of inhibitors of glycosylation, suggesting that the molecule was a glycoprotein. FIF could be removed by adsorption to human fibroblasts but not to PMN, monocytes, or red blood cells. Further studies were carried out to investigate the role of sugars in the interaction of FIF with the target cells. Human FIF activity was significantly reduced in the presence of several sugars including alpha-methyl-D mannoside, L-xylose, N-acetyl-D-glucosamine, D-mannose, L-rhamnose but not L fucose. Preincubation of human fibroblasts with alpha-methyl-D-mannoside prevented their response to FIF. In contrast, pretreatment of fibroblasts with mannosidase had no effect, suggesting that alpha-methyl-D-mannoside was an essential component of the FIF molecule recognized by the FIF receptor on fibroblasts. PMID- 3837695 TI - Peripheral arterial surgery. PMID- 3837696 TI - Bombay (Oh) phenotype among Sinhalese in Sri Lanka. PMID- 3837697 TI - Pseudo-carcinomatous invasion in a rectal polyp. PMID- 3837698 TI - On surgery beneath the parotid salivary gland (pharyngeal branch of the vagus and the carotid sheaths). PMID- 3837699 TI - Pulmonary function in Sri Lankan adults. PMID- 3837700 TI - Endodermal sinus tumour of the ovary--a rare malignant germ cell tumour. PMID- 3837701 TI - Iodine content of drinking water and goitre endemicity in Sri Lanka. PMID- 3837702 TI - Echocardiography in subacute bacterial endocarditis. PMID- 3837703 TI - Effect of antenatal hydrocortisone administration on the prevention of respiratory distress syndrome of the newborn. PMID- 3837704 TI - A full term viable abdominal gestation. PMID- 3837705 TI - Utilization of family health workers in screening for hypertension in a rural community in Sri Lanka. PMID- 3837706 TI - [Comparative studies on isoenzyme patterns, proteins, sugars and lipids of four geographic strains of Anopheles sinensis]. PMID- 3837707 TI - [Studies on monoclonal antibodies against Leishmania donovani Xinjiang strain]. PMID- 3837708 TI - [Open solid plate medium cultured Bacillus thuringiensis and its mosquitocidal effect in field application]. PMID- 3837709 TI - [Preliminary studies on paper radioantigensorbent test in the diagnosis of paragonimiasis]. PMID- 3837710 TI - [The embryotoxicity of primaquine octylamide in rats]. PMID- 3837711 TI - [3 human cases of urinary tract infection with Rhabditis]. PMID- 3837712 TI - [Comparison of serological activity between crude SEA and its major serological antigen of Schistosoma japonicum]. PMID- 3837713 TI - [Significance of determination of some biochemical indices in hepatic fibrosis of animal schistosomiasis japonica]. PMID- 3837714 TI - [The embryotoxicity of bromoacetamide in rats]. PMID- 3837715 TI - [Preliminary study on chromosome of Schistosoma japonicum]. PMID- 3837716 TI - [Establishment of a hybridoma cell line secreting monoclonal antibody against Toxoplasma gondii]. PMID- 3837717 TI - [Preliminary observation on the karyotype of Macracanthorhynchus hirudinaceus]. PMID- 3837718 TI - [Effect of Corydalis Sibirica maxim on secondary echinococcus granulosus cysts in mice]. PMID- 3837719 TI - [Clinical manifestations and treatment of 43 cases with liver alveolar hydatid disease in Xinjiang uygur autonomous region]. PMID- 3837720 TI - Anatomy and development of the thyroid gland. PMID- 3837721 TI - Atypical Cogan's syndrome. PMID- 3837722 TI - Rare cause of growth retardation. PMID- 3837723 TI - [Epidemiological study of a group of staphylococci isolated in a hospital environment]. AB - A survey has been carried out on 336 strains of staphylococci isolated in a hospital environment in order to assess the validity of the lyogroup classifying method, to know their epidemiological behavior in our territory and to test their sensitivity to various antibiotics. The findings of the survey can be summed up as follows: the practical test for bacteriolysis activity appears to be a valid method of identifying staphylococci in so far as it allows to classify them, but also to differentiate them from micrococci; lyogroup VI appears to be prevalent both as a whole and in nearly all materials of origin; the incidence of resistance is highest for piperacillin (47%), gentamicin (20%), tobramycin (19%); it is lowest for netilmicin (1.2%) and amikacin (2.6%); among meticilline resistant strains (18%) there is a marked resistance towards nearly all antibiotics tested. PMID- 3837724 TI - [A severe case of bronchial pneumonia due to Mycoplasma pneumoniae accompanied by immunosuppression, thrombophlebitis and hepatitis resolved with human immunoglobulins]. AB - We present a case of severe pneumonia by Mycoplasma pneumoniae, whose clinical course was complicated by immunodepression, hepatitis and deep venous thrombosis. Treatment with pepsin-treated human immunoglobulins was unsuccessful, whereas prompt recovery was obtained by infusion of human immunoglobulins treated at pH 4. PMID- 3837725 TI - [A fractionation method for human blood for the separation of subclasses of IgG]. AB - A serum fractionation method which permits a good separation among IgG subclasses is proposed. By loading serum on a Protein A-sepharose column, IgG3 are readily recovered as they do not bind to the Protein A. IgG of the other subclasses are eluted, equilibrated at pH 6 and loaded either on a chromatofocusing column, or on an anion exchanger gel. In these conditions IgG4 are retained, and then recovered by lowering the pH, whereas IgG1 and IgG2 pass through the column and can be recovered separately by absorption on a Protein A column and elution with a decreasing pH gradient. PMID- 3837726 TI - Fastidious bacteriuria and pyuria. AB - Mid stream specimens of urine that showed pyuria or bacteriuria on direct microscopy and no bacterial growth on initial routine culture were collected from 346 patients. These specimens were cultured for the presence of fastidious organisms using two different test systems. One system used non selective media and the other used selective media. Any fastidious organism isolated was identified by standard methods. Lactobacilli were the only fastidious organisms isolated in significant numbers. Using comparable test systems, equivalent numbers of Lactobacilli were isolated from both test and control group and because of the difficulty in specimen collection, these are to be considered as possible contaminants. PMID- 3837727 TI - Drug-induced lymphadenopathy--two biopsied cases treated with cephem-group antibiotics for a short time. PMID- 3837728 TI - Hypercalcemia and metastatic calcification in adult T-cell leukemia--pathogenesis of hypercalcemia. PMID- 3837729 TI - The electroencephalogram and information scanning in the human visual cortex during pattern recognition. PMID- 3837730 TI - Role of the cerebral hemispheres in acoustic pattern movement. PMID- 3837731 TI - Effect of masking on air and bone conduction of acoustic stimuli. PMID- 3837732 TI - Sex differences in psychophysiological parameters depending on task difficulty. PMID- 3837733 TI - Typologic analysis of the central and peripheral hemodynamics in orthostasis in normal subjects and patients with arterial hypertension. PMID- 3837734 TI - Types of working capacity and frequency of development of ischemic heart disease and essential hypertension. PMID- 3837735 TI - Analysis of the chronotropic function of the heart. PMID- 3837736 TI - Dependence of the human aerodynamic airway resistance on parameters of the lungs and respiratory maneuver. PMID- 3837737 TI - Simple motor reaction time and respiration. III. Effect of voluntary breathing. PMID- 3837738 TI - Comparative analysis of urinary corticosteroid and catecholamine levels in persons with different occupational training. PMID- 3837740 TI - Disturbance of integral-period synchronization of cardiac and respiratory rhythms after a transmeridional flight across three time zones. PMID- 3837739 TI - Prediction of human physical working capacity in high ambient temperatures. PMID- 3837741 TI - Risk of arterial hypertension and characteristics of functional brain asymmetry in workers airlifted for short tours of duty. PMID- 3837743 TI - Heat acclimatization by controlled hypothermia. PMID- 3837742 TI - Effect of prolonged physical work of submaximal and extremal power on mass transfer and utilization of oxygen. PMID- 3837744 TI - Effect of the CSF of patients with manic-depressive psychosis on the self stimulation reaction. PMID- 3837745 TI - Time course of estimation of the size of a pattern and its neurophysiological correlates. PMID- 3837746 TI - Lateral differences in dynamics of latencies of a simple motor response to acoustic stimuli of increasing intensity. PMID- 3837747 TI - Effect of organic components of blood serum on its osmolality. PMID- 3837748 TI - Characteristics of temperature regulation in man during heat loading. PMID- 3837749 TI - Lithium in the human body. PMID- 3837750 TI - High altitude pulmonary oedema. PMID- 3837751 TI - Electrophysiological studies in patients of bradyarrhythmia associated with mitral stenosis. PMID- 3837752 TI - Empyema thoracis: a review of 70 cases. PMID- 3837753 TI - Pleural irrigation in the management of empyema thoracis. PMID- 3837754 TI - Comparison of subcutaneous salbutamol and terbutaline with adrenaline. PMID- 3837755 TI - Short term chemotherapy of pulmonary tuberculosis in service population. PMID- 3837756 TI - Foreign body in air passage in children (study of 20 cases). PMID- 3837757 TI - Long term effects of tobacco smoking: results of a spirometric study in 300 old men. PMID- 3837758 TI - Normal values of peak expiratory flow rate in healthy north Indian adults- revision of prediction formulae. PMID- 3837759 TI - Selective endobronchial blocking for one lung anaesthesia in children. PMID- 3837760 TI - Sarcoidosis in India. PMID- 3837761 TI - Massive haemoptysis due to pulmonary metastasis from carcinoma prostate--an unusual presentation. PMID- 3837762 TI - Evaluation of COPD. PMID- 3837763 TI - The asthmogenic effect of exercise stress on the normal first degree relatives of asthmatic subjects. PMID- 3837764 TI - Methods of reduction of harmful constituents in bidi smoke. PMID- 3837765 TI - Flexible fiberoptic bronchoscopy in clinical practice--a review of 100 procedures. PMID- 3837766 TI - CK and ASAT: comparative evaluation as prognostic indicator in acute myocardial infarction. PMID- 3837767 TI - Exposure to domestic cooking fuels and chronic bronchitis. PMID- 3837768 TI - Fictitious haemoptysis. PMID- 3837769 TI - Pulmonary and cerebral cryptococcosis masquerading as terminal anaplastic carcinoma with metastasis. PMID- 3837770 TI - Vocal cord nodule as a cause of haemoptysis. An unusual presentation. PMID- 3837771 TI - Presidential address. XXII National Conference of Indian Academy of Pediatrics. November 1-4, 1985, Trivandrum. PMID- 3837772 TI - Child survival revolution: challenges & realities. PMID- 3837773 TI - Perinatal outcome in hypertensive disease of pregnancy. PMID- 3837774 TI - Development of sexual characteristics in upper socio-economic girls. PMID- 3837775 TI - Clinical and serological study of acute paralytic poliomyelitis in immunized and nonimmunized children. PMID- 3837776 TI - Severe malnutrition without infection--functionally an immune competent state in pre-school children. PMID- 3837777 TI - Social customs and beliefs regarding breast feeding. PMID- 3837778 TI - Antibiotic associated colitis in children. PMID- 3837779 TI - Physical growth characteristics of upper socio-economic adolescent boys of Varanasi. PMID- 3837780 TI - Neonatal stroke. PMID- 3837781 TI - Thyroprivic hypothyroidism followed by hyperthyroidism. PMID- 3837782 TI - Awareness about breast feeding, immunisation and oral rehydration. PMID- 3837783 TI - National Workshop on Protection of Child Consumer. PMID- 3837784 TI - Reflections on the origin and aim of nostalgia. PMID- 3837785 TI - The confrontation between Lilith and Adam: the fifth round. PMID- 3837786 TI - Jung and the phenomenology of guilt. PMID- 3837787 TI - Sleep research and clinically reported dreams. Can they be integrated? Dora, revisited. PMID- 3837788 TI - Immunogenicity of Corynebacterium pseudotuberculosis and the effect of adjuvants in mice. AB - Intraperitoneal inoculation of CF1 mice with 100 micrograms, 200 micrograms, or 300 micrograms whole cell (WC) or 250 micrograms, 500 micrograms, or 1000 micrograms cell wall (CW) of Corynebacterium pseudotuberculosis induced varying degrees of protection after intravenous challenge of immunity with 7.2 X 10(4) CFU of C. pseudotuberculosis. Generally, the degree of protection increased with the dose of WC or CW. However, intraperitoneal inoculation of mice with 100 micrograms, 200 micrograms, or 300 micrograms heat-killed Mycobacterium bovis BCG; 50 micrograms, 150 micrograms, or 300 micrograms of either muramyl dipeptide (MDP) or trehalose dimycolate (TDM); or 350 micrograms, 700 micrograms or 1400 micrograms Corynebacterium parvum did not induce resistance to intravenous inoculation of 7.4 X 10(4) CFU of C. pseudotuberculosis. The protection induced by 500 micrograms CW was enhanced by adding 100 micrograms BCG, 150 micrograms MDP, or 350 micrograms C. parvum but protection induced in mice by 300 micrograms of WC was not enhanced by adding any adjuvants. PMID- 3837789 TI - The tonsillar carriage of Pasteurella haemolytica in lambs. AB - To study colonization of the tonsils by Pasteurella haemolytica, attempts were made to isolate the organism from the tonsils of lambs which died or were killed in the course of unrelated experiments. In addition, repeated tonsillar swabs were taken from 37 lambs and their 28 dams over a 3-month period. From lambs under 3 days old, only A serotypes and untypable strains of P. haemolytica were recovered, while T serotypes were first detected in 3-week-old lambs. As the age of the lambs increased, the fall in the isolation rate of A serotypes and of untypable strains was accompanied by an increase in T serotype isolation. In lambs 9 to 12 weeks old, over 80 per cent of isolates were T serotypes. Of the 222 swabs from live lambs, 88 (40 per cent) yielded P. haemolytica, with more than one serotype being recovered from 24 of the 88 positive swabs. Multiple isolations, mostly of 2 serotypes, were made from lambs of all ages but were commonest at 12 weeks of age. Of the 117 isolates, 70 (60 per cent) were of biotype T, 31 (26 per cent) were of biotype A and 16 (14 per cent) were untypable. P. haemolytica was isolated from 25 of the 28 ewes on 1 to 5 of the 6 sampling occasions. The 65 positive swabs yielded 81 T serotypes (78 per cent), 21 A serotypes (20 per cent) and one untypable strain as 32 single and 33 multiple isolations. The typed isolates comprised 7 A serotypes and 3 T serotypes. Only one serotype (A6) isolated from lambs was not recovered from ewes.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837790 TI - The effect of cycloheximide, heparin and ancrod on mice given Ehrlich ascites tumour cells intravenously. AB - Mice injected intra-venously with Ehrlich ascites tumour cells showed a fatal susceptibility to normally-tolerated doses of cycloheximide when the latter was given at the following times after the tumour cells--2 h, 24 h, 48 h, and 72 h. When the interval between tumour cell injection and cycloheximide challenge was extended to 1 week or 3 weeks (at which latter time mice have clinical "metastatic" neoplasia), no such susceptibility was shown. In the case of the 2 h interval between tumour cells and cycloheximide (and also when cycloheximide was given 2 h before tumour cells), the lethal syndrome was prevented by heparin treatment and also by Ancrod defibrination. This strongly suggests that heparin is effective by virtue of its anticoagulant properties, and that fibrinogen-to fibrin conversion is an essential step in the pathogenesis. Neither heparin nor Ancrod confer any protection when used in the syndrome consequent upon cycloheximide challenge 24 h after tumour cell injection, which indicates that, in this case, the conversion of fibrinogen to fibrin is not an essential step in determining the fatal outcome. PMID- 3837791 TI - The effect of mycoplasmas and acholeplasmas of equine origin on organ cultures of chicken-embryo trachea. AB - Chicken-embryo tracheal organ cultures were inoculated with equine strains of Mycoplasma arginini, M. equigenitalium, 2 strains of M. subdolum, Acholeplasma laidlawii and 3 strains of A. oculi. All strains established and multiplied in the explant cultures, but only M. subdolum and A. oculi produced a cytopathic effect on ciliated epithelial cells, causing sloughing of cells and cilia after 6 days. There was a correlation between ciliostasis and increase in titre of both M. subdolum and A. oculi and this relationship was not observed with M. equigenitalium and A. laidlawii. All the strains of acholeplasma multiplied to some extent in organ culture media, but reached higher titres in the presence of explants. Cells infected with the M. subdolum strain showed sloughing of cilia, vacuolization, and increase in size of mitochondria, followed by disorganization of epithelium and marked destruction of subcellular organelles. Mycoplasmas were closely attached to the epithelial surface of the tracheal explant 8 days after infection. PMID- 3837792 TI - A xanthomatous lesion resembling balloon cell melanoma of the iris and ciliary body of a dog. AB - A slow-growing xanthomatous tumour which diffusely infiltrated the iris and ciliary body of a dog was composed of large, pale, vacuolated cells which contained scattered fine pigment granules. Electron microscopy revealed coalescing vacuoles, lamellar membranous structures, and small groups of melanosomes in the cytoplasm, suggesting melanocytic origin. The lesion resembled balloon cell melanoma of the ciliary body of man. The behaviour of the tumour was benign. This is a clinical and pathological entity which has not been reported previously in the dog. PMID- 3837793 TI - The pathogenesis of a high-virulence and a low-virulence strain of Corynebacterium bovis in the mammary gland of the mouse. AB - A comparison was made of the pathogenesis of experimental mastitis in mice caused by a strain of Corynebacterium bovis (P3) isolated from clinical mastitis in the cow and a strain (NCDO 1930) isolated from the teat of a symptomless carrier cow. Strain NCDO 1930 elicited a neutrophil response which controlled the infection so that, after 6 to 8 days, 9 of 10 glands were sterile and one abscess was found. In contrast, the neutrophil response to strain P3 failed to control the infection and, by 6 to 8 days, 8 of 10 glands were infected and there were abscesses in 11 of 20 glands. The virulence of strain P3 was associated with its ability to colonize on and in milk fat globules, from which the organisms multiplied in the alveolar lumen irrespective of the neutrophil infiltration. PMID- 3837794 TI - Age immunity to Ostertagia circumcincta: comparison of the local immune responses of 4 1/2- and 10-month-old lambs. AB - In 2 experiments, the local immune response to infection with 50,000 O. circumcincta was monitored in 4 1/2-month-old previously infected lambs by following changes in the composition of gastric lymph. The previously infected lambs were partially resistant to the challenge in that they harboured a greater proportion of early fourth stage parasites and that the developing larvae recovered from them were distinctly shorter than those present in controls. They also exhibited a secondary local immune response in the gastric lymph consisting of increases in the output of lymphoblasts and IgA cells which peaked 3 to 5 days after challenge, followed by increases in lymph IgA and IgA anti-larval antibody on days 6 and 7. The size of the total IgA response in a sheep was highly correlated with the degree of stunting of its larvae, suggesting that IgA antibody can reduce the growth of developing Ostertagia. When compared with the results of 2 identically designed experiments carried out previously in 10-month old sheep, the younger lambs were measurably less resistant to challenge and most aspects of the magnitude of the local immune response were significantly depressed, although the timing of the response was similar. It is suggested that this poorly developed ability to mount a secondary mucosal immune response may explain the relative failure of the younger lamb to develop resistance to gastro intestinal nematodes. PMID- 3837795 TI - Comparative pathology of the enlarged carotid body. AB - A histological study was made of the carotid bodies of man and various animal species from low and high altitudes. The animals studied were the alpaca, llama, cattle, guinea-pig, rabbit, dog, rat and man. As well as a qualitative microscopic study, a differential cell count was carried out to determine the percentage of the light and dark variants of chief cells and of sustentacular cells present. The investigation showed that the carotid bodies enlarge in cattle, guinea-pigs and rabbits living in the hypobaric hypoxia of high altitude to which they have to acclimatize. The carotid bodies are not enlarged in llamas and alpacas which show Darwinian adaptation to high altitude. There is no single histopathological appearance to be found with enlargement of the carotid body; on the contrary, there appears to be a characteristic histological reaction for different species. Thus, man shows hyperplasia of sustentacular cells, cattle show focal dark cell proliferation and rabbits, guinea-pigs, and dogs show striking hyperplasia and vacuolation of chief cells. In the rat, the enlargement of the carotid body is not characterized by the differential proliferation of any specific element and, as a result, it does not appear to be a good model for the human organ. In man and rat, carotid body enlargement occurs in response to systemic hypertension as well as to chronic hypoxaemia and the histological response to the 2 stimuli is the same, depending on the species. The normal rabbit carotid body is more reminiscent of that of man but, in this species, the reaction of glomic tissue differs from that of human glomic tissue. PMID- 3837796 TI - Cartilage proliferation in response to metacercarial infections of fish gills. AB - The pathology observed in a metacercarial (species not yet identified) infection of pond-raised, aquarium fish is described. In natural infections, there was extensive proliferation of cartilage resulting in loss of respiratory epithelium and occasionally in fusion of primary lamellae. Grossly, the most consistent sign of infection was flared opercula with protruding gills. Although haemorrhage was produced in early infections as the cercariae migrated, it was not macroscopically evident. A few heavily infected fish did have grossly observable signs of haemorrhage but this was not a consistent finding. Cercariae were collected from snails (Pleurocera sp.) and fish were experimentally infected to study the response. Over a 6-day-period, a progression from fibroblast to chondroblast occurred, indicating that piscine fibroblasts are able to differentiate into chondroblasts. This differentiation may be dependent on environmental conditions or may be stimulated by the parasite itself. PMID- 3837797 TI - Identification of two cases of bovine undifferentiated tumours (squamous cell carcinoma and adenocarcinoma) by electron microscopy. AB - Two cases of undifferentiated tumours were found in cows. Electron microscopy revealed that one was an undifferentiated squamous cell carcinoma of unknown primary site and the other an undifferentiated adenocarcinoma of the lung. PMID- 3837798 TI - Inner ear structure in the deaf and normally hearing Dalmatian dog. AB - Both cochleae of two 6-week-old Dalmatian dogs of the same litter were examined by means of surface specimens and histological section techniques. Basic quantitative data on the morphometry of the cochlear duct in the hearing (though hypopigmented) pup are presented. The cochlear ducts of the deaf (though normally coloured) pup exhibited in general the same alterations (collapse of the scala media) as described in the literature. In addition, we describe also the coalescence of membranous structures, projection of the tectorial membrane up to the spiral ligament and preservation of inner hair cells in the second (i.e. middle) cochlear coil. These new findings complement the previous data and indicate an alternative possible course of hereditary inner ear degeneration in the Dalmatian dog. PMID- 3837799 TI - Serum urate concentrations in the Dalmatian Coach Hound. AB - The mean concentration of urate in the serum of 80 Dalmatian Coach Hounds was approximately double that in the serum of 99 dogs of other breeds. Both values were higher than those reported previously. PMID- 3837800 TI - Involvement of iron and copper in biological damage that is induced by oxygen free radicals. PMID- 3837801 TI - Photophysical properties of rose bengal and its derivatives (XII). AB - We describe herein a series of new derivatives of tetrachloro tetraiodo (rose bengal) and report their emission and absorption characteristics. Photochemists and photobiologists may find several of these derivatives useful as alternative sources of singlet oxygen. PMID- 3837802 TI - Charge transfer and oxy radicals in antimalarial action. Quinones, dapsone metabolites, metal complexes, iminium ions, and peroxides. AB - A mechanism of action is proposed that encompasses almost all of the main categories of antimalarial agents: quinones and precursors, dapsone metabolites, metal complexes of thiosemicarbazones and biguanides, iminium-type ions from acridines and quinolines, and peroxides. The toxic effect of the drugs is believed to result from the generation of reactive oxygen radicals that usually arise via charge transfer. Electrochemical studies (reduction potential and reversibility) were performed on a number of these agents. Reduction potentials range from -0.23 to -1.52 V. It is likely that the in vivo values are appreciably more positive in certain cases. PMID- 3837803 TI - Mechanism and reaction products of the oxidation of Cu(I)-phenanthroline by H2O2. AB - We have suggested a possible reaction mechanism for the oxidation of the cuprous phenanthroline complex by H2O2 in the presence of formate and methanol. The cuprous phenanthroline complex was generated by pulse and gamma radiolysis. We measured the decay kinetics of this complex as well as the chain length of this reaction. Our observations indicate that in this reaction OH. is not formed directly, but through the decomposition of a metal-peroxo complex. This mechanism does not necessarily operate with other copper compounds, especially with copper complexes bound to a biological target. PMID- 3837804 TI - Gas chromatography-mass spectrometry method for determination of phospholipid peroxides; II. Transesterification to form pentafluorobenzyl esters and detection with picogram sensitivity. AB - The purpose of this study is to develop a higher sensitivity method to detect phospholipid peroxides in tissues to more effectively investigate the role of lipid peroxidation in pathology. We recently presented a gas chromatography-mass spectrometry (GC-MS) method for identification and measurement of phospholipid peroxides at the 10 ng level (van Kuijk, et al. J. Free Rad. Biol. Med., 1:215 225, 1985) based on transesterification to form fatty acid methyl ester derivatives. While this method is quite useful under some circumstances, more sensitivity was desirable to analyse trace amounts of lipid peroxidation products in small samples of various tissues. We present a method to prepare pentafluorobenzyl esters of fatty acids and hydroxy fatty acids directly from phospholipids by transesterification at room temperature or from triglycerides at 60 degrees C. Oxidized lipids are extracted into dichloromethane and peroxide functions are reduced with sodium borohydride. Transesterification of phospholipids is carried out in dichloromethane with 20% (v/v) pentafluorobenzyl alcohol, 1% (w/v) potassium tert-butoxide and 0.2 N (m-trifluoromethyl phenyl) trimethyl ammonium hydroxide at room temperature for 30 min. Pentafluorobenzyl esters are purified on open silica columns, O-trimethyl silyl derivatives of the alcohol functions are formed, and GC-MS is carried out with negative ion chemical ionization detection. The single or double oxidation products of oleate, linoleate, arachidonate, and docosahexaenoate were detected with 10 pg sensitivity in oxidized rat retina phospholipids or synthetic phospholipids, by negative ion chemical ionization with specific ion monitoring of carboxylate anions. PMID- 3837805 TI - Consecutive action of phospholipase A2 and glutathione peroxidase is required for reduction of phospholipid hydroperoxides and provides a convenient method to determine peroxide values in membranes. AB - The purpose of this study was to investigate the ability of selenium-dependent glutathione peroxidase to reduce phospholipid hydroperoxides in membrane bilayers and to develop a method to measure the peroxide content of phospholipids. Phospholipid hydroperoxides were synthesized by photooxidation of 1-palmitoyl 2 linoleoyl phosphatidylcholine and characterized by gas chromatography-mass spectrometry. Phospholipid hydroperoxides in phosphatidylcholine bilayers showed no detectable reactivity with Se-dependent glutathione peroxidase (the reaction is at least 65,000 times slower than with an available hydroperoxide). However, after the phospholipid hydroperoxides were preincubated with phospholipase A2, the free fatty acid hydroperoxides became available as a substrate for Se dependent glutathione peroxidase. The enzyme assay can be used for convenient determination of peroxide values in phospholipids at the 1 nmole level and free fatty acid hydroperoxides can be distinguished from phospholipid hydroperoxides by omitting phospholipase A2. The accuracy of the enzymatic method was confirmed using an improved colorimetric chemical assay to measure peroxide values of phospholipid hydroperoxides to the same sensitivity. The chemical assay was not linear in the presence of high levels of lipid, but at low levels of lipid the peroxide values of phospholipid hydroperoxides measured by both methods agreed to within 1%. Since high levels of lipid inhibited the chemical assay, the enzyme assay is more accurate for determination of peroxides in membranes and tissues. The possible role of phospholipase deficiencies as a causal factor in degenerative diseases thought to be due to lipid peroxidation, such as Neuronal Ceroid Lipofuscinosis (Battens disease), is discussed. PMID- 3837806 TI - Antioxidant enzyme content of pulmonary artery endothelial cells: effects of subculture. AB - The activities of glutathione peroxidase, superoxide dismutase and catalase, enzymes which play a critical role in protection of the vascular endothelium from oxygen free-radical injury, were determined in large vessel endothelial cells obtained under three different growth conditions: from freshly isolated from bovine pulmonary arteries, in the first (primary) subculture and after six serial subcultures (6.5 population doublings). The endothelium was obtained by mechanically scraping the vascular lumen. Endothelial cell monolayers were detached mechanically from the substratum prior to passage. No proteolytic enzymes were used in either procedure. The activities of catalase, superoxide dismutase and glutathione peroxidase determined in freshly isolated endothelial cells were, respectively, 39.9 +/- 10.3, 2.2 +/- 0.8 and 3.0 +/- 0.5 X 10(2) units per mg protein. After primary culture there was no change in superoxide dismutase activity, but a significant decrease in glutathione peroxidase activity to 1.4 +/- 0.4 X 10(2) was observed, and catalase activity dropped significantly to 18.6 +/- 5.0 units per mg protein. After 6.5 population doublings, the activity of all three enzymes returned to values similar to those of the freshly isolated cells. A fourfold increase in the protein to DNA ratio occurred in cells in primary culture and was maintained in sixth-passage cells. This increase in endothelial cell size upon culture was reflected in the electron microscopic evidence of cellular hypertrophy. Measurement of the rate of transport of 5 hydroxytryptamine by endothelial cell monolayers revealed a substantial loss upon multiple passage. Transport in the sixth-passage cells was decreased to one-half the rate of primary cells.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837808 TI - Intramembrane particle distribution in renal collecting tubule cells in normal, dehydrated and hereditary diabetes insipidus rats with particular reference to orthogonal arrays of particles. PMID- 3837807 TI - Probing Cu(II)/H2O2 damage in DNA with a damage-specific DNA binding protein. AB - A human damage-specific DNA binding protein has been employed as a sensitive probe of damage introduction by the combination of Cu(II) and H2O2. Optimal conditions for the introduction of protein-recognizable lesions into DNA in the Cu(II)/H2O2 system were obtained with 10(-5)-M CuCl2 and 0.10-mM H2O2. The absolute requirement for the presence of a metal ion suggests the involvement of a metal catalyzed Fenton reaction. However, damage introduction in the presence of KI and dimethylsulfoxide indicate that hydroxyl radical, while responsible for the introduction of strand breaks, is not the primary species responsible for lesion introduction. Protein-recognizable damage was introduced into DNA and poly d(G-C), but not into poly d(A-T). Loss of label from the five position of cytosine was also observed at high peroxide levels. PMID- 3837809 TI - Scanning electron microscopic study on mitochondrial cristae in the rat adrenal cortex. PMID- 3837810 TI - Lectin binding to the luminal surface of distal airway epithelial cells of rodents. PMID- 3837811 TI - Ultrastructural characterization of novel intracisternal virus-like particles associated with a spontaneous subcutaneous tumor from a Japanese wild mouse, Mus musculus molossinus (Mon/Nm). PMID- 3837812 TI - Confronting membranes at the ruffled border in osteoclasts of cultured fetal parietal bone. PMID- 3837813 TI - An improved method for both light and electron microscopy of identical sites in semi-thin tissue sections under 200 kV transmission electron microscope. PMID- 3837815 TI - Proceedings of the International Workshop on Calcium Metabolism and Aging. Sponsored by the US-Japan Malnutrition Panel. December 6-7, 1984, Tokyo. PMID- 3837814 TI - Usefulness of a sapphire knife in ultrathin sectioning of biological specimens. PMID- 3837816 TI - Ca and atherosclerosis. PMID- 3837817 TI - Effects of calcium on muscular training. PMID- 3837818 TI - The liver and metabolic bone disease. PMID- 3837819 TI - Nutrition and renal osteodystrophy. AB - Nutritional factors, especially calcium, calorie and fat intakes may be important in the treatment with active vitamin D, so that the effect appears more efficient. Incidence of bone changes, due to hyperparathyroidism in diabetic nephropathy, was less than that in non-diabetic patients under hemodialysis. No effect of control status of diabetes mellitus was demonstrated, regarding incidence of subperiosteal resorption of finger bones. Bone mass was decreased in diabetic patients in whom the control of blood glucose was inadequate. PMID- 3837820 TI - Calcium requirement and its intake of the elderly in Japan: an attempt to improve its intake. PMID- 3837821 TI - Perspectives on calcium. PMID- 3837822 TI - Cytosolic free calcium in chick heart cells. Its role in cell injury. AB - The role of cytosolic free Ca2+ (Caf) in cell injury was investigated using two methods for measuring Caf in freshly disaggregated embryonic chick heart cells. The null-point method, using arsenazo III, is based on determining the extracellular Ca2+ concentration at which no net Ca2+ movement occurs when plasma membrane permeability is increased. With this technique, the null point Caf averaged 0.23 +/- 0.07 microM (n = 6) in the basal state. Using quin2, an intracellular fluorescent dye, to measure Caf a value of 0.05 +/- 0.01 microM (n = 5) was obtained. Elevation of Caf by various agents was associated with an increase in cell injury as measured by the release of the cytosolic enzyme, LDH. However, the relationship between Caf and LDH release was not a direct one under all experimental conditions, indicating that the level of Caf is not the sole determinant of cell injury. PMID- 3837823 TI - Measurement of cytosolic calcium with aequorin in dispersed rat ventricular cells. AB - The changes in the cytosolic concentration of free calcium of adult rat cardomyocytes were monitored using aequorin incorporated by hypoosmotic shock. The majority of the myocytes retained their rod-like appearance and their tolerance to a normal concentration of extracellular calcium. The aequorin signal was increased by depolarization, by an increase in extracellular calcium, by substitution of extracellular sodium with either choline or tetramethylammonium, by 20 mM NH4Cl or by hypoxia. In these myocytes, isoproterenol or the phosphodiesterase inhibitor MIX (3-isobutyl-l-methylxanthine) enhanced the ability of the cells to buffer calcium loads while the mitochondrial inhibitor FCCP (carbonyl cyanide p-trifluoromethoxy-phenyl-hydrazone), decreased their calcium buffering capacity. PMID- 3837824 TI - Nonpolar density gradient ultracentrifugation in the direct determination of myocardial subcellular calcium. AB - A new method is described for making direct measurements of compartmentalized subcellular stores of calcium in the isolated perfused dog heart. Cellular calcium was immobilized by freezing the myocardium in diastole with an extremely cold fluorocarbon fluid (-125 degrees C). All subsequent procedures were conducted under conditions which prevented ionic diffusion, either at temperatures well below the freezing point of water or in the absence of water. Sarcolemmal and mitochondrial enriched fractions were segregated from dessicated, homogenized, myocardial tissue by ultracentrifugation utilizing density-gradients composed of blends of silicone and halocarbon on fluids within which physiological salts are insoluble. The total calcium content of these isolated fractions were then determined by atomic absorption spectrophotometry. Ouabain and epinephrine were subsequently used to alter the contractility of the perfused hearts and such contractile alterations were then related to changes noted in the calcium activity of the isolated subcellular fractions. In this study the calcium levels of the enriched mitochondrial fractions were elevated by both ouabain and epinephrine, while the calcium levels of the enriched sarcolemmal fractions were elevated only by ouabain. The advantage of this segregative procedure is that it prevents artifactual intercompartmental calcium rearrangement and preserves calcium levels to those initially fixed in situ at the time of freezing. PMID- 3837825 TI - Sarcolemmal disruption during the calcium paradox. AB - Reperfusion of an isolated heart with calcium-containing solution after a short period of calcium-free perfusion may result in irreversible cell damage (calcium paradox). The ultrastructure of the sarcolemma of the rabbit heart during the calcium paradox was studied by using fast freezing devices. This method excluded ultrastructural changes induced by chemical fixation and cryoprotection. In addition, thin-section and conventional freeze-fracture electron microscopy were used. During reperfusion with calcium-containing solution disruption of the sarcolemma was observed, which was attended with formation of unilamellar and multilamellar vesicles and aggregation of intramembrane particles. These ultrastructural changes are explained in terms of calcium- and proton-induced lateral phase separation and fusion processes in the lipid bilayer of the sarcolemma. PMID- 3837827 TI - Dynamic stiffness of the isolated guinea-pig gall-bladder during contraction induced by cholecystokinin. AB - The visco-elastic properties of the isolated guinea-pig gall-bladder were investigated by the dynamic method. The sinusoidal volume changes (up to 0.2 ml) and the resulting sinusoidal pressure changes were displayed on the cathode ray oscilloscope, the volume being on abscissa and the pressure on ordinate. The frequencies of the sinusoidal change in volume were 0.17-0.5 Hz which were 10 times higher than those in Schoetz et al.'s work (Am. J. Physiol. 241: G376-G381, 1981). The dynamic pressure-volume relation of the resting gall-bladder was nearly linear, but showed the elliptical hysteresis loop during CCK- or ACh induced contractions. If frequencies of the sinusoidal change in volume were increased to 1.7-3.3 Hz, the hysteresis loop for either relaxing or contracting gall-bladder became narrow and guiter-shaped. The dynamic stiffness, the slope of the hysteresis loop or the ratio of the maximum of pressure change to the maximum of volume change, increased in linear proportion to intraluminal pressure rise during contraction. The data could be analysed on the assumption that the visco elastic property of the gall-bladder was explained by two Voigt models placed in series. The one indicated the property of the smooth muscle tissue, and it had low elastance at the resting state, or middle-grade elastance together with high viscous resistance at the contraction state. Another one had high elastance and low viscous resistance, and it was characterized by collagen fibers involved within the organ. PMID- 3837826 TI - Calcium induced reversible alterations in excitation-contraction coupling in verapamil treated rat myocardium. AB - We studied the effects of a calcium channel blocking agent, verapamil (V) (2 to 10 micrograms/ml), in the presence of increasing external calcium on simultaneously recorded transmembrane electrophysiological properties and mechanical function of rat myocardium. Left ventricular papillary muscles from male Fischer 344 rats were studied electrically, by standard microelectrode techniques, and mechanically in an isolated tissue bath at 30 degrees C. Control (0 micrograms/ml V + 2.4 mM Ca2+) = C, action potential duration at 50% and 75% repolarization (D50ap and D75ap) recorded from papillary muscles were short (14.1 +/- 0.75 ms; 33.3 +/- 2.7 ms) compared with recordings from papillary muscles subjected to increasing doses of verapamil (2, 4, 6, 8, or 10 micrograms/ml) + 2.4 mM Ca2+ = V, (17.3 +/- 0.77 ms; 121.4 +/- 8.9 ms: 10 micrograms/ml) (P less than 0.001). Upon augmentation of external calcium [10 micrograms/ml Verapamil + augmented Ca2+ (4.8, 7.2, or 9.6 mM] = VCa, D50ap and D75ap decreased but still remained significantly longer than control D50ap and D75ap (15.1 +/- 0.77 ms; 110.1 +/- 7.9 ms). Developed tension (Td), time to peak developed tension (TPT), time to one-half relaxation (T1/2R) and resting tension (Tr) decreased as a function of verapamil concentration. Although TPT and T1/2R returned toward C values when external calcium was increased, Tr continued to decrease while Td increased above control levels. A significant correlation was found between measured parameters of contraction and transmembrane action potential for C and VCa muscles. However, in V muscles no significant correlation was observed between these same mechanical and electrical parameters.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837828 TI - [Functional architecture of smooth muscle sphincters: longitudinal and circular muscles, encircling the anal canal in cats and dogs]. AB - The short-lasting 'burst' activity was recorded from decerebrate, unanesthetized cats and dogs, by means of a single, bipolar needle electrode, originally aimed at recording of 'slow spikes' of internal anal sphincters. The recording of the 'burst' was more accessible in cats than in dogs, although the same macro electrode, of which diameter was 0.3 mm, has been used throughout. There was no such species difference of accessibility for recording of 'slow spikes' of internal sphincters. Histological examinations indicated that the difference of accessibility may be due to relative thinness of muscular tissue in the cat. Some of the bursts were seen simultaneously on the background of continuous 'slow spikes', however, the most of the bursts appeared in reciprocal manner with those 'slow spikes', namely, the bursts were elicited by rectal distension, while the 'slow spikes' of internal sphincters were wholly inhibited by the same distension. The participation of bursts to the anal canal pressure was little in fact, though the longitudinal length of anal canal was invariably shortened, whenever the repetitive bursts occurred either spontaneously or in response. It is concluded that the 'burst' activity is generated by longitudinal muscles of anal sphincters. The observation suggests further that cell-to-cell electrical communication does not operate between longitudinal and circular muscles in this portion, instead, that neural mechanism regulates dominantly for co-ordination of those muscles encircling the anal canal. PMID- 3837829 TI - The estimation of urine bolus volume for patients with congenital hydronephrosis. AB - A new examination (bolusmetry) to evaluate the urine transport function of the ureteropelvic system was performed in 7 adult patients with congenital unilateral hydronephrosis. Whistle-tipped Fr. 5 catheters were introduced to each ureter about 5 cm proximal from the ureteral orifice by transurethral endoscopic technique. Bolus volume and frequency, and changes in them caused by furosemide injection, were estimated by using a drop counter which was connected to the terminal end of the ureteral catheter. Bolusmetry was performed comparing the hydronephrotic side and the healthy side, pre and postoperatively, and these results were then compared with a conventional examination. We obtained the following results: Bolus volume of the hydronephrotic side was 0.05 +/- 0.02 (mean +/- S.D.) ml at oliguric state, and it was significantly lower than the value of the healthy side which was 0.19 +/- 0.07 ml. Injection of diuretics increased the bolus volume of the healthy side ten times or more. On the other hand, the bolus volume of the hydronephrotic side was increased only slightly by the injection of furosemide, it being approximately one-fourth of the value of the healthy side. The value of bolus frequency was similar to peristaltic frequency which was measured by the electromyogram. The tendency of a decrease was noticed in bolus frequency of the hydronephrotic side but it was not significant. Of patients with severe hydronephrosis, the bolus volume of the hydronephrotic side was decreased and the response to the diuretics was not so significant. By bolusmetry, functional or organic obstruction of the ureteropelvic junction was detected. Of 3 patients who had nephrectomy or nephrostomy, the kidney function had deteriorated severely. The bolus volume was lower than 0.25 ml at the diuretic state. Bolus volume was increased postoperatively in 3 of 4 patients who had received pelvioplasty. One patient did not show the formation of bolus by the injection of diuretics, and the cause of the hydronephrosis was functional obstruction of the pelvioureteric junction. We concluded that bolusmetry is a valuable method for evaluation of the function of urine transport in the ureteropelvic system. Especially in hydronephrosis, bolusmetry is a useful in the choice of operative procedure, and for postoperative evaluation. PMID- 3837830 TI - [Effect of proglumide on gastrointestinal motility and gastric secretion in the conscious state]. AB - Proglumide suppressed neither phase III activity nor propagation of interdigestive migrating contractions (IMC) in the gastrointestinal tract. Furthermore, proglumide did not inhibit the gastric motor activity stimulated by pentagastrin, however, it suppressed the pH in Pavlov pouch stimulated by pentagastrin in the interdigestive state. On the contrary, in the digestive state, proglumide did not suppress the pH. That might be due to not only various gut hormones including gastrin, but also neural stimulation, mechanical stimulation and so on. In conclusion, antigastrin effect of proglumide is rather remarkable on the acid secretion not on the gastrointestinal motor activity. Proglumide may be an antacid without suppression of motor activity. PMID- 3837831 TI - The pathogenesis of idiopathic portal hypertension (so-called Banti's disease)- an experimental study. PMID- 3837832 TI - Electron microscopic observations of influenzal pneumonitis. PMID- 3837833 TI - An outbreak of Mycoplasma pneumoniae infections in a hospital in Japan. PMID- 3837834 TI - [Gram-negative bacteria resistant to antibiotics in foods]. AB - From 154 food samples, including vegetables (lettuce), milk and meals served at school it was possible to isolate and identify 400 Gram negative bacilli distributed among 339 enteric bacteria (Escherichia, Shigella, Citrobacter, Klebsiella, Enterobacter, Serratia and Proteus) and other 61 non enteric bacilli (Acinetobacter, Flavobacterium, Aeromonas and Pseudomonas). Submitting this cultures to the drugs sulfadiazine (Su), streptomycin (Sm), tetracycline (Tc), chloramphenicol (Cm), kanamycin (Km), ampicillin (Ap), nalidixic acid (Nal) and gentamycin (Gm) it was observed only six stocks susceptible to all drugs and total sensibility to Gm. Among enteric bacteria the profiles Su (27,6%) and Su-Ap (39,6%) predominated, while for the non enteric bacilli percentages of 18.0 for Ap and 9.8 for Su-Ap were detected. Aiming to better characterization of resistance, experiments of conjugation were made with standard strains of Escherichia coli K 12. Great concern was raised by the recognition of these cultures due to the elevated R+ taxes for the enteric bacilli that were close to 90% (milk and food at school) and about 70% in relation to lettuce. PMID- 3837835 TI - [Bacterial infection in patients with visceral leishmaniasis]. AB - In an analysis of 63 hospitalized cases with visceral leishmaniasis, the clinical or post-mortem diagnosis of bacterial infection was performed in 33; 13 (39.3%) patients had respiratory infection, 4 (12.1%) had skin infection, 4 had urinary tract infection, 3 (9.0%) showed ear infection and 2 (6.6%) had infection of the oral cavity. It is worth mentioning that in 7 (21%) cases there was infection in multiple sites. Gram positive and/or Gram negative organisms were isolated from 10 patients. In only two (autopsied) cases, infection with less common organisms was recorded, one with disseminated candidiasis and another with disseminated tuberculosis. Death occurred in 9 of the 63 cases, and in 8 of these, concomitant bacterial infection of importance was documented. Patients who had serum globulins lower than 4 g% had significantly more infection (p less than 0.05) than patients with globulin levels higher than 4 g%; there was no significant difference when the number of leucocytes and neutrophils in patients with associated infection was compared with those in patients without bacterial infection. The present study demonstrates that bacterial infection frequently occurs in patients with visceral leishmaniasis, and indicates an unfavourable prognosis. Even though the mechanism of increased susceptibility to infection in this condition was unclear, the widespread range of infections and of infective agents, suggests a multifactorial process. PMID- 3837836 TI - [Matched study of Chagas' cardiopathy in Rio Grande do Sul, Brazil]. PMID- 3837837 TI - Lutzomyia gasparviannai Martins, Godoy & Silva, 1962, probable vector of Leishmania mexicana ssp. in Viana municipality, Espirito Santo State, Brazil. PMID- 3837838 TI - The role of the second post-mortem examination. PMID- 3837839 TI - Mechanism for differential sensitivity of the chromosome and growth cycles of mammalian cells to the rate of protein synthesis. AB - It has been documented widely that when the generation times of eucaryotic cells are lengthened by slowing the rate of protein synthesis, the duration of the chromosome cycle (S, G2, and M phases) remains relatively invariant. Paradoxically, when the growth of exponentially growing cultures of CHO cells is partially inhibited with inhibitors of protein synthesis, the immediate effect is a proportionate reduction in the rate of total protein, histone protein, and DNA synthesis. However, on further investigation it was found that over the next 2 h the rates of histone protein and DNA synthesis recover, in some cases completely to the uninhibited rate, while the synthesis rates of other proteins do not recover. We called this process chromosome cycle compensation. The amount of compensation seen in CHO cell cultures can account quantitatively for the relative invariance in the length of the chromosome cycle (S, G2, and M phases) reported for these cells. The mechanism for this compensation involves a specific increase in the levels of histone mRNAs. An invariant chromosome cycle coupled with a lengthening growth cycle must result in a disproportionate lengthening of the G1 phase. Thus, these results suggest that chromosome cycle invariance may be due more to specific cellular compensation mechanisms rather than to the more usual interpretation involving a rate-limiting step for cell cycle progression in the G1 phase. PMID- 3837840 TI - Detection of two chromatin proteins which bind specifically to the 5'-flanking region of the rat prolactin gene. AB - We employed a protein gel blotting procedure to search for nuclear proteins from rat pituitary cells that bind preferentially to the 5'-flanking region of the rat prolactin gene. By gel blots of chromatin proteins from GH3 rat pituitary tumor cells with a 32P-labeled prolactin genomic clone, we detected two major binding proteins with molecular weights of approximately 44,000 and 48,000, designated NP44 and NP48, respectively. Both NP44 and NP48 are minor chromatin proteins which are extracted at low salt concentrations (0.4 M NaCl) and exhibit a range of slightly acidic isoelectric variants. NP44 and NP48 were detected at similar levels in chromatin extracts of GH3 cells, the prolactin-negative GC cell variant of the GH3 cells, and normal rat pituitary tissue. Considerably lower levels of these two proteins were found in chromatin extracts from rat liver and rat C6 glial cells. NP44 and NP48 exhibit DNA sequence specificity, as evidenced by their strong binding to the upstream flanking region of the prolactin gene, but only very weak binding to plasmid DNA, rat prolactin or growth hormone cDNAs, or upstream flanking regions of two other rat genes. By analyzing subclones of a rat prolactin genomic clone, we established that NP44 and NP48 bind to at least two sites, which are located between 0.4 and 2.0 kilobases (region I) and between 2.0 and 4.8 kilobases (region II) upstream of the transcription initiation site. These findings are discussed in the context of a possible functional association between the strong binding of NP44 and NP48 to the prolactin 5'-flanking region and pituitary-specific expression of the prolactin gene. PMID- 3837841 TI - Reversion analysis of mutations induced by 5-bromodeoxyuridine mutagenesis in mammalian cells. AB - Two protocols have been developed, both of which utilize the thymidine analog 5 bromodeoxyuridine (BrdUrd) to induce mutations in mammalian cells in culture (E. R. Kaufman and R. L. Davidson, Proc. Natl. Acad. Sci. USA 75:4982-4986, 1978; E. R. Kaufman, Mol. Cell. Biol. 4:2449-2454, 1984). The first protocol, termed incorporational (INC) mutagenesis, utilizes high concentrations of BrdUrd in the culture medium to generate a high intracellular ratio of BrdUTP/dCTP. The second protocol, termed replicational (REP) mutagenesis, entails the incorporation of BrdUrd into DNA under nonmutagenic conditions, the removal of all BrdUrd from the culture medium, and the subsequent replication of the bromouracil-containing DNA in the presence of high intracellular levels of dTTP and dGTP. Genetic studies using reversion analysis at the hypoxanthine-guanine phosphoribosyltransferase locus were used to determine whether the mechanisms of these two BrdUrd mutagenesis protocols had enough specificity to be distinguishable by their ability to revert various mutants. The results of these studies indicated that (i) mutants induced by INC mutagenesis were induced to revert only by REP mutagenesis and not by INC mutagenesis, (ii) mutants induced by REP mutagenesis were more efficiently reverted by INC mutagenesis than by REP mutagenesis, and (iii) both spontaneous mutants and mutants induced by the chemical mutagen ethyl methanesulfonate showed a high degree of specificity when tested for reversion by the BrdUrd mutagenesis protocols. PMID- 3837842 TI - Photochemical cross-linking of cap binding proteins to eucaryotic mRNAs: effect of mRNA 5' secondary structure. AB - We used UV light-induced cross-linking to study the interactions of cap binding proteins with the 5' cap structure of eucaryotic mRNAs. Thymidine kinase gene (herpes simplex virus type 1) transcripts prepared in vitro using the SP6 RNA polymerase transcription system were capped and methylated posttranscriptionally with [alpha-32P]GTP and S-adenosyl-L-methionine to yield cap-labeled transcripts. Irradiation of capped transcripts with crude rabbit reticulocyte initiation factors in the presence of ATP-Mg2+ resulted in the cap-specific cross-linking of two polypeptides with molecular masses of 24 and 80 kilodaltons (kDa). The cross linking characteristics of these polypeptides resemble those of the cap-binding proteins previously detected by a chemical cross-linking assay (N. Sonenberg, D. Guertin, D. Cleveland, and H. Trachsel, Cell 27:563-572, 1981). However, the relative efficiency of the cross-linking of these two polypeptides to the cap structure was different from that in previous studies, and there was no detectable cross-linking of the previously described 50-kDa polypeptide. In addition, we present data indicating that the insertion of secondary structure into the 5' noncoding region of tk mRNA, 6 nucleotides from the cap structure, decreases the cap-specific cross-linking of the 80-kDa but not the 24-kDa polypeptide. In contrast, the insertion of secondary structure 37 nucleotides from the cap structure had no significant effect on the cross-linking of either the 24- or the 80-kDa cap-specific polypeptide. These results demonstrate that the position of mRNA 5'-proximal secondary structure relative to the cap structure can influence the cap-specific interaction between the mRNA and a translation initiation factor. PMID- 3837843 TI - Transcriptional regulation of two serum-induced RNAs in mouse fibroblasts: equivalence of one species to B2 repetitive elements. AB - We obtained eight cDNA clones that define five genes whose expression (appearance of transcripts in the cytoplasm) is enhanced when quiescent mouse fibroblasts are stimulated with serum to divide. Two of these clones (designated 49C8 and 16C8) correspond to RNA species that are present in the cytoplasm of quiescent cells at very low levels. After serum stimulation, the level of 16C8 mRNA rose more rapidly than that of 49C8 RNA, reaching a maximum around 6 to 12 h. The data suggest that 49C8 and 16C8 RNAs are induced as a result of independent stimuli. Either fibroblast growth factor or 12-tetradecanoylphorbol-13-acetate alone could induce 16C8 expression almost as effectively as serum; in contrast, 49C8 was not efficiently induced by epidermal growth factor, fibroblast growth factor, insulin, or 12-tetradecanoylphorbol-13-acetate. Inhibitors of transcription and translation diminished the induction of 16C8, while 49C8 expression was sensitive to actinomycin D but not cycloheximide or 5,6-dichloro-1-beta-D ribofuranosylbenzimidazole. In vitro transcription experiments with isolated nuclei revealed a peak in transcriptional activity of the 16C8 gene at around 3 h after serum stimulation. Sequence analysis of the 49C8 cDNA clone showed greater than 90% homology of a large portion to a consensus rodent B2 repetitive element. PMID- 3837844 TI - Augmented expression of normal c-myc is sufficient for cotransformation of rat embryo cells with a mutant ras gene. AB - We studied the effect of altered c-myc structure and expression upon the ability of c-myc to promote the transformation of normal rat embryo cells when it was supplemented by EJras (the mutant c-H-ras1 gene from EJ/T24 bladder carcinoma cells). We tested several c-myc alleles cloned from normal and tumor tissues of chicken and human origin and found that only LL4myc (derived from a bursal lymphoma in which an avian leukosis virus long terminal repeat resides within the first c-myc intron in the same transcriptional orientation) had cotransforming activity. No activity was observed with normal chicken and human c-myc alleles, two other bursal lymphoma c-myc alleles (LL3myc and LL6myc), and two human c-myc genes (HSRmyc and DMmyc) from human neuroectodermal tumor cell line COLO320, in which c-myc is amplified. Some of these inactive alleles had the following alterations that are frequently found in tumor-derived c-myc: point mutations affecting the encoded protein (LL3myc); a truncated structure with loss of the first, noncoding exon (LL3myc and DMmyc); and proviral integration within or near the myc locus (LL3myc and LL6myc). The following two experimental approaches indicated that cotransforming activity was directly related to the transcriptional activity of the alleles in cultured rat cells: when cotransfected into Rat-2 cells, LL4myc was more highly expressed than the other (inactive) alleles; and augmented expression of HSRmyc, DMmyc, or normal human or normal chicken c-myc placed under the transcriptional control of retroviral long terminal repeats or increased expression of normal human c-myc under the influence of a retroviral enhancer element was accompanied by cotransformation activity. We concluded that augmented expression of even a normal c-myc gene is sufficient for cotransforming activity and that additional structural alterations frequently found in tumor-derived alleles are neither necessary nor sufficient for the gene to acquire rat embryo cell cotransforming properties. PMID- 3837845 TI - Extrachromosomal DNA transformation of Caenorhabditis elegans. AB - DNA was introduced into the germ line of the nematode Caenorhabditis elegans by microinjection. Approximately 10% of the injected worms gave rise to transformed progeny. Upon injection, supercoiled molecules formed a high-molecular-weight array predominantly composed of tandem repeats of the injected sequence. Injected linear molecules formed both tandem and inverted repeats as if they had ligated to each other. No worm DNA sequences were required in the injected plasmid for the formation of these high-molecular-weight arrays. Surprisingly, these high molecular-weight arrays were extrachromosomal and heritable. On average 50% of the progeny of a transformed hermaphrodite still carried the exogenous sequences. In situ hybridization experiments demonstrated that approximately half of the transformed animals carried foreign DNA in all of their cells; the remainder were mosaic animals in which some cells contained the exogenous sequences while others carried no detectable foreign DNA. The presence of mosaic and nonmosaic nematodes in transformed populations may permit detailed analysis of the expression and function of C. elegans genes. PMID- 3837847 TI - Coordinate expression of amplified metallothionein I and II genes in cadmium resistant Chinese hamster cells. AB - Recombinant DNA probes complementary to Chinese hamster metallothionein (MT)-1 and MT-2 mRNAs were used to compare MT gene copy numbers, zinc-induced MT mRNA levels, and uninduced MT mRNA levels in cadmium-resistant (Cdr) Chinese hamster ovary cell lines. Quantitative hybridization analyses determined that the MT-1 and MT-2 genes are each present at approximately single-copy levels in the genome of cell line Cdr2C10 and are coordinately amplified approximately 7, 3, and 12 times over the Cdr2C10 value in the genomes of cell lines Cdr20F4, Cdr30F9, and Cdr200T1, respectively. The maximum zinc-induced MT-1 mRNA concentrations in cell lines Cdr20F4, Cdr30F9, and Cdr200T1 were equal to 1, 3, and 15 times that measured in Cdr2C10, respectively. Similarly, the maximum zinc-induced MT-2 mRNA concentrations were equal to 1, 3, and 14 times that measured in Cdr2C10, respectively, and in each instance they were 90 to 150 times greater than their respective concentrations in uninduced cells. Thus, relative MT gene numbers are closely correlated with both zinc-induced and uninduced MT mRNA levels in Cdr2C10, Cdr30F9, and Cdr200T1, but not in Cdr20F4. Each of the latter two lines possesses structurally altered chromosomes whose breakpoints are near the MT locus. Nonetheless, the ratio of the levels of MT-1 to MT-2 mRNAs was constant in each of the four cell lines, including Cdr20F4. These results demonstrate that MT 1 and MT-2 mRNAs are induced coordinately in each Cdr cell line. Therefore, the coordination of the induction of MT-1 and MT-2 mRNA is independent of MT gene amplification, MT gene rearrangement, and the relative inducibilities of amplified MT genes. However, MT mRNA and protein levels each indicate that MT-1 and MT-2 expression is non-coordinate in uninduced cells. Thus, regulation of MT expression may involve two different mechanisms which are differentially operative in induced and uninduced cells. PMID- 3837846 TI - Genetic engineering in the Precambrian: structure of the chicken triosephosphate isomerase gene. AB - We report the sequence of the single chicken triosephosphate isomerase gene and its flanking regions. The 3-kilobase-long gene is composed of seven similarly sized exons and six introns. By using crystallographic and sequence data, we argue that this ancient gene was originally assembled from the genetic antecedents of exons. PMID- 3837848 TI - Effect of dimethyl sulfoxide on human carcinoma cells, inhibition of plasminogen activator synthesis, change in cell morphology, and alteration of response to cholera toxin. AB - Human carcinoma HEp-3 lost its tumorigenic and metastatic potential upon prolonged culture in vitro. This change was accompanied by a reduced production of plasminogen activator (PA) of the urokinase type (uPA), which is secreted by HEp-3 cells, a change in response to effectors that modulate uPA production, and an alteration of cell morphology. Similar but more rapid changes occurred when malignant HEp-3 cells were exposed to dimethyl sulfoxide (DMSO). uPA activity in the culture medium dropped below 50% of the control level within 6 h after the addition of DMSO and became undetectable after 24 h of treatment. This drop in uPA activity was not caused by an increased production of PA inhibitors. The cell associated uPA decreased to 25 to 30% of the control level within 6 h of DMSO treatment and remained at this level for at least 96 h; the reduced uPA production was partially accounted for by a rapid decrease in the functional and chemical concentration of uPA mRNA. In contrast, the concentrations of most of the abundant mRNA species did not appear to be significantly affected, and cell growth was only slightly inhibited in the presence of DMSO. Malignant HEp-3 cells treated with DMSO responded to cholera toxin with an enhanced production of uPA, and their morphology became indistinguishable from that of nonmalignant HEp-3 cells grown in vitro for prolonged periods of time. All of the above changes were fully and rapidly reversible. The inhibitory effect of DMSO on PA production appears to be specific for uPA of human cell lines. PMID- 3837849 TI - Transforming activity of DNA fragments from normal human lymphocytes results from spontaneous activation of a c-Ha-ras1 gene. AB - An activated human Ha-ras gene was present in a secondary NIH 3T3 transformant isolated after serial transfection of originally low-molecular-weight DNA fragments from normal human cells. This gene appeared to have acquired its transforming properties by a spontaneous mutation in codon 12 by substitution of a deoxythymidine residue for a deoxyguanosine residue. DNA rearrangements in the flanking sequences of the transferred Ha-ras gene were not involved in the activation of the protooncogene. PMID- 3837850 TI - Can ACG serve as an initiation codon for protein synthesis in eucaryotic cells? AB - An ACG codon, which replaces the AUG codon used to initiate the synthesis of bacteriophage T7 gene 0.3 protein, was shown to function as a low-efficiency initiation codon in a wheat germ cell-free protein-synthesizing system. PMID- 3837851 TI - Transcriptional regulation of a gene encoding the small subunit of ribulose-1,5 bisphosphate carboxylase in soybean tissue is linked to the phytochrome response. AB - The effects of white light, far-red light, and darkness on the transcription of a soybean ribulose-1,5-biphosphate carboxylase small subunit gene, SRS1, were investigated. RNA was labeled with [alpha-32P]UTP in nuclei isolated from plants grown under different conditions of light and darkness and used to probe Southern blots and dot blots. The levels of small subunit mRNA synthesis were normalized to ribosomal RNA synthesis. We demonstrate that the SRS1 gene is transcribed at a rate 16- to 32-fold higher in plants grown in the light than in those grown in darkness. Transcription of the small subunit increased dramatically when plants grown in darkness were given 30 min to 6 h of light and then leveled off after 24 to 48 h of exposure. When light-grown seedlings were exposed to greater than 2 h of darkness, a gradual decrease in transcription was detected. This decrease in transcription reached basal dark-grown levels after 48 h of exposure to darkness. The increase in transcription in etiolated seedlings treated with white light for 15 min could be reduced to basal levels if the treatment was followed by treatment with far-red light for 15 min. In addition, transcription in ligh-grown seedlings was reduced to basal levels when plants were exposed to far-red light for 15 min. The transcription of this ribulose-1,5-biphosphate carboxylase small subunit gene is strongly positively regulated by white light, is negatively regulated by far-red light, and exhibits a classic phytochrome-linked response. PMID- 3837852 TI - Control functions of adenovirus transformation region E1A gene products in rat and human cells. AB - Altered control of the rat cell cycle induced by adenovirus requires expression of transformation region E1A, but not of E1B, E2A, E2B, or late genes. We show here that neither E3 nor E4 is required, so the effect results directly from an E1A product. Mutants with defects in the 289-amino-acid (aa) E1A product had little or no effect on the rat cell cycle even at 1,000 IU per cell. A mutant (pm975) lacking the 243-aa E1A product altered cell cycle progression, but less efficiently than did wild-type virus. The 289-aa E1A protein is therefore essential for cell cycle effects; the 243-aa protein is also necessary for the full effect but cannot act alone. Mutants with altered 289-aa E1A proteins showed different extents of leak expression of viral early region E2A as the multiplicity was increased; each leaked more in human than in rat cells. dl312, with no E1A products, failed to produce E2A mRNA or protein at 1,000 IU per cell in rat cells but did so in some experiments in human cells. There appears to be a very strict dependence of viral early gene expression on E1A in rat cells, whereas dependence on E1A is more relaxed in HeLa cells, perhaps due to a cellular E1A-like function. Altered cell cycle control is more dependent on E1A function than is early viral gene expression. PMID- 3837854 TI - Nuclear polyadenylate-binding protein. AB - Polyadenylate-binding activity can be detected in eluates from sodium dodecyl sulfate gels by a nitrocellulose filter-binding assay. Nuclear extracts from rat liver show a single peak of binding activity at 50 to 55 kilodaltons; cytoplasmic extracts show a single peak at 70 to 80 kilodaltons, corresponding to a 75 kilodalton protein previously described. Similar results are obtained with yeast and mouse fibroblasts, indicating a high degree of conservation of both nuclear and cytoplasmic polyadenylate-binding proteins. The activity from rat liver nuclei has been purified 125-fold on the basis of specific binding to polyadenylate and shows two main bands in sodium dodecyl sulfate gels at 53 and 55 kilodaltons. PMID- 3837853 TI - Deregulation of c-myc gene expression in human colon carcinoma is not accompanied by amplification or rearrangement of the gene. AB - The structure and expression of the c-myc oncogene were examined in 29 primary human colon adenocarcinomas. Dot blot hybridization of total RNA showed that 21 tumors (72%) had considerably elevated expression of c-myc (5- to 40-fold) relative to normal colonic mucosa. These data were corroborated by Northern blots of polyadenylated RNA, which showed a 2.3-kilobase transcript. Southern analysis of the c-myc locus in these tumors indicated the absence of amplification or DNA rearrangement in a 35-kilobase region encompassing the gene. In a parallel study, elevated expression of c-myc without amplification or DNA rearrangement was also observed in three of six colon carcinoma cell lines examined; in addition, unlike a normal colon cell line control, these three cell lines exhibited constitutive, high-level expression of the gene during their growth in cultures. These results indicate that elevated expression of the c-myc oncogene occurs frequently in primary human colon carcinomas and that the mechanism involved in the regulation of c-myc expression is altered in tumor-derived cell lines. PMID- 3837857 TI - Ejaculations induced by p-chloroamphetamine in the rat. AB - The ejaculatory response following acute injections of p-chloroamphetamine (PCA) and several other drugs was measured by weighing the compact seminal material accumulated over 2 hr. p-Chloroamphetamine caused a dose-dependent ejaculatory response that was inhibited by the inhibitor of the synthesis of 5 hydroxytryptamine (5-HT), p-chlorophenylalanine (PCPA), neurotoxic doses of PCA, reserpine, DSP 4 a selective noradrenergic neurotoxin given 48 hr before PCA, the inhibitor of synthesis of noradrenaline (NA) FLA 63, the specific inhibitors of uptake of 5-HT, alaproclate, fluoxetine and norzimeldine and the selective inhibitor of the uptake of NA, CPP 199, the E form of norzimeldine. The doses of several receptor antagonists producing a 50% decrease in the weight of seminal material were determined. The non-selective 5-HT receptor antagonists, metitepine and methergoline, the selective alpha 1-adrenoreceptor antagonists, prazosin and phenoxybenzamine and the non-selective alpha-adrenoreceptor antagonist, phentolamine, had strong effects, followed by the selective 5-HT2 antagonists, ketanserin and pirenperone. Yohimbine, an alpha 2-adrenoreceptor antagonist and atropine, a muscarinic receptor antagonist, only produced a partial blockade. The rank order of potency for some dopamine (DA) receptor antagonists was chlorpromazine, domperidone, haloperidol, pimozide. Remoxipride, a selective DA2 receptor antagonist and the selective DA1 antagonist, Sch 23390, had no effect. The following drugs had no effect: propranolol, naloxone, picrotoxin, cimetidine and mepyramine. The 5-HT receptor agonist 5-methoxy-N,N-dimethyltryptamine (5 MeODMT 3 mg/kg, i.p.) produced a small effect on the weight of seminal material, although 72% of the rats ejaculated. d-Amphetamine did not induce ejaculation at 5 mg/kg but had a marked effect at 15 mg/kg.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3837856 TI - Human glyceraldehyde-3-phosphate dehydrogenase: mRNA levels and enzyme activity in developing muscle. AB - Analysis of human glyceraldehyde-3-phosphate dehydrogenase mRNA revealed that levels in adult skeletal muscle are 12-fold greater per microgram of polyadenylated RNA than in fetal skeletal muscle, whereas in cardiac muscle RNA levels were about equal in fetal and adult tissue. The mRNA levels correlate well with glyceraldehyde 3-phosphate dehydrogenase enzyme activities. There was no evidence for fetus- or tissue-specific forms. PMID- 3837855 TI - Induction of acquired thermotolerance in Tetrahymena thermophila: effects of protein synthesis inhibitors. AB - When Tetrahymena thermophila cells growing at 30 degrees C are shifted to either 40 or 43 degrees C, the kinetics and extent of induction of heat shock mRNAs in both cases are virtually indistinguishable. However, the cells shifted to 40 degrees C show a typical induction of heat shock protein (HSP) synthesis and survive indefinitely (100% after 24 h), whereas those at 43 degrees C show an abortive synthesis of HSPs and die (less than 0.01% survivors) within 1 h. Cells treated at 30 degrees C with the drugs cycloheximide or emetine, at concentrations which are initially inhibitory to protein synthesis and cell growth but from which cells can eventually recover and resume growth, are after this recovery able to survive a direct shift from 30 to 43 degrees C (ca. 70% survival after 1 h). This induction of thermotolerance by these drugs is as efficient in providing thermoprotection to cells as is a prior sublethal heat treatment which elicits the synthesis of HSPs. However, during the period when drug-treated cells recover their protein synthesis ability and simultaneously acquire the ability to subsequently survive a shift to 43 degrees C, none of the major HSPs are synthesized. The ability to survive a 1-h, 43 degrees C heat treatment, therefore, does not absolutely require the prior synthesis of HSPs. But, as extended survival at 43 degrees Celsius depends absolutely on the ability of cells to continually synthesize HSPs, it appears that a prior heat shock as well as the recovery from protein synthesis inhibition elicits a change in the protein synthetic machinery which allows the translation of HSP mRNAs at what would otherwise be a nonpermissive temperature for protein synthesis. PMID- 3837859 TI - Antidipsogenic action of vasoactive intestinal peptide in the rat. AB - The effect of vasoactive intestinal peptide (VIP) on the intake of water was studied in the rat. Intracerebroventricular administration of vasoactive intestinal peptide strongly inhibited drinking in rats deprived of water, but peripheral administration had no effect, indicating that the site of action was central. Drinking induced by angiotensin II was also markedly blocked by simultaneous administration of vasoactive intestinal peptide. The results indicate that in the rat, vasoactive intestinal peptide may play a role in the control of intake of water as a neuropeptide thirst inhibitor. PMID- 3837858 TI - Kinetics of the uptake of monoamines into synaptosomes from rat brain. Consequences of lithium treatment and withdrawal. AB - The uptake systems for noradrenaline (NA) and 5-hydroxytryptamine (5-HT) into synaptosomal preparations from rat brain were found to consist of two components, a low-capacity and a high-capacity process. Administration of lithium (2 mequiv./kg) for 12 days was found to cause an increase in the activity of the low capacity uptake process for NA, but to markedly inhibit the high-capacity system for this neurotransmitter. Following withdrawal of lithium, the activity of the low-capacity system returned to control values, but there was a profound enhancement of the high-capacity uptake process of NA. Both the low- and the high capacity uptake systems for 5-HT were found to be inhibited by the administration of lithium. The reduced activity of the high-capacity system resulting from administration of lithium was still present 2 days after the cessation of treatment with the drug, whereas the low-capacity process was found to be further depressed. The uptake of dopamine (DA) into synaptosomal preparations appeared to be more complex than that of NA and 5-HT, since the shape of the substrate velocity curve implied some form of multiple and co-operative process. The administration of lithium resulted in an enhancement of the uptake of DA in all regions of the brain examined, while 2 days of withdrawal from the drug caused a reduction to below control values in the amount of DA taken up. It therefore seems that alterations in monoaminergic uptake processes play a part in the mode of action of lithium, and may be involved in the genesis of the lithium withdrawal phenomenon. PMID- 3837860 TI - Effects of phencyclidine in combination with morphine on the levels of met enkephalin, dopamine, DOPAC and HVA in discrete brain areas of mice. AB - The study investigated the interaction between phencyclidine (PCP) and morphine in affecting the levels of met-enkephalin, dopamine, DOPAC and HVA in mice. Morphine 5 mg/kg alone and PCP 10 mg/kg alone failed to change the levels of met enkephalin in the midbrain and striatum. However, PCP in combination with morphine produced an increase in met-enkephalin levels and a decrease in HVA levels. In the midbrain, there was a direct relationship between the decrease in met-enkephalin levels and the increase in HVA levels. These results suggest that PCP may change the function in dopaminergic and enkephalinergic neuronal systems in the midbrain and/or striatum. PMID- 3837861 TI - Neuron activities of monkey prefrontal cortex during the learning of visual discrimination tasks with GO/NO-GO performances. AB - Neuronal activity in the dorsolateral and ventral prefrontal cortex was studied during the learning by six monkeys of the performance of a two-color visual discrimination task. The GO/NO-GO task or its reversal consisted of five periods: the Start Lamp Period, Lamp-off Period, Cue Period, Response Period, and ITI Period (Reward and Control Periods). In sum, 271 task-related neurons were studied by means of 545 penetrations. Discharge rates increased or decreased from the rate of ITI or preceding periods of the task. Discharge rate changes were of either the phasic or tonic pattern. During motor learning extending from a poor performance level (50-63% correct), through intermediate (60-83%), to well trained levels (above 85%), the number of task-related neurons increased in the Cue, Response and ITI Periods, and more task-related neurons showed changes in more than one period. During the learning process, not only do more prefrontal neurons respond phasically to visual stimuli in the Cue and Response Periods or to reward or trial end in ITI, and become activated before lever release, but also they become active tonically in the Cue, Response and ITI Periods. PMID- 3837862 TI - Reflex responses evoked in the adrenal sympathetic nerve to electrical stimulation of somatic afferent nerves in the rat. AB - The present study was initiated to determine the role of somatic A (myelinated) and C (unmyelinated) afferent fibers in both responses of increases and decreases in adrenal sympathetic nerve activities during repetitive mechanical pinching and brushing stimulations of the skin in anesthetized rats with central nervous system (CNS) intact. Accordingly, changes in adrenal sympathetic nerve activity resulting from repetitive and single shock electrical stimulation of various spinal afferent nerves, especially the 13th thoracic (Th13) spinal nerve and the sural nerve, were examined in urethane/chloralose-anesthetized rats. Repetitive electrical stimulation of A afferent fibers in Th13 spinal or sural nerve decreased the adrenal nerve activity similarly as brushing stimulation of skin of the lower chest or hindlimb did, while repetitive stimulation of A plus C afferent fibers of those nerves increased the adrenal nerve activity as pinching stimulation of those skins did. Single shock stimulation of spinal afferent nerves evoked various reflex components in the adrenal nerve: an initial depression of spontaneous activity (the early depression); the following reflex discharge due to activation of A afferent fibers (the A-reflex); a subsequent reflex discharge due to activation of C afferent fibers (the C-reflex); and following post-excitatory depressions. These reflexes seem to be mediated mainly via supraspinal pathways since they were abolished by spinal transection at the C1-2 level. Although the supraspinal A- and C-reflexes could be elicited from stimulation of a wide variety of spinal segmental afferent levels, the early depression was more prominent when afferents at spinal segments closer to the level of adrenal nerve outflow were excited. It is suggested that the decreased responses of the adrenal nerve during repetitive electrical stimulation of A afferent nerve fibers are attributable to summation of both the early depression and post-excitatory depression evoked by single shock stimulation, while the increased responses during repetitive stimulation of A plus C afferent fibers are attributable to summation of the C-reflex after single shock stimulation. In spinalized rats, repetitive stimulation of Th13 always increased the adrenal nerve activities regardless of whether A fibers alone or A plus C fibers were stimulated, just as brushing and pinching of the lower chest skin always increased them. The increased responses in spinal animals seem to be related to the fact that single electrical stimuli of Th13 produced A- and C-reflexes of spinal origin without clear depressions. PMID- 3837863 TI - An electromyographic analysis of electrically-evoked prey-catching behavior by means of stimuli applied to the optic tectum in the Japanese toad. AB - As a step toward elucidating the tectal-controlling functions for generating the prey-catching motor pattern, electrically-evoked "snapping" (the final consummatory phase of the prey-catching sequence) by means of stimuli applied to the optic tectum was analyzed using electromyographic methods in freely-moving Japanese toads. Electromyographic activities were recorded from the following 7 muscles in the head region (the presumed "snapping"-related muscles): M. depressor mandibulae, M. temporalis, M. sternohyoideus, M. geniohyoideus, M. genioglossus, M. hyoglossus, and M. submentalis. It was found that the characteristic activities evoked in these muscles were associated with jaw/tongue movements during the electrically-evoked "snapping". All of these muscles, except for sternohyoideus and geniohyoideus muscles, were activated in an all-or-nothing manner which corresponded to the elicitation of the electrically-evoked "snapping". It was suggested that such an all-or-nothing character may reflect an all-or-nothing property of the neuronal circuits for generating the prey-catching motor-pattern. PMID- 3837864 TI - The principal pathway from the piriform cortex to the deep amygdaloid nuclei in the cat. AB - Pathways relaying olfactory information to the deep amygdaloid nuclei (AMYGd) were analyzed with electrophysiological techniques in anesthetized cats. Stimulation of the piriform cortex (PC) produced orthodromic spikes in some AMYGd neurons with a mean latency of 12.2 ms and antidromic responses in other neurons with a mean latency of 9.3 ms. Stimulation of the AMYGd produced antidromic spikes in some PC neurons with a mean latency of 11.5 ms. Some neurons in the entorhinal area (EA) were activated orthodromically from the PC with a mean latency of 22 ms, and a proportion of these cells was also activated antidromically from the AMYGd. Some neurons in the agranular insular cortex were activated orthodromically from the PC, but none of them responded antidromically to AMYGd stimulation. From these observations, it is suggested that olfactory information reaches the AMYGd directly from the PC or indirectly via the EA, and that the direct path conveys the major olfactory input from the PC to the AMYGd. PMID- 3837865 TI - Biphasic modulation of spontaneous activities of entopeduncular neurons by systemic application of apomorphine in anesthetized cats. AB - The responses of entopeduncular neurons to apomorphine were investigated with extracellular recording methods in anesthetized cats. Apomorphine was applied intravenously in increasing doses, which cumulatively doubled with each addition (5-640 micrograms/kg). The spontaneous firing rates of entopeduncular neurons, which were inhibited by electrical stimulation of the caudate nucleus, increased when lower doses of apomorphine (5-20 micrograms/kg) were applied. However, higher doses (40-640 micrograms/kg) produced a dose-dependent decrease in the firing rate. The results suggest that there are direct and indirect effects of systemically administered apomorphine on entopeduncular neurons which may contribute to biphasic responses in the spontaneous discharge rate. PMID- 3837867 TI - The taste and mechanical response properties of neurons in the parvicellular part of the thalamic posteromedial ventral nucleus of the rat. AB - A total of 41 taste and 17 mechanoreceptive neurons were recorded in the parvicellular part of the posteromedial ventral nucleus of the thalamus (VPMpc) of amobarbital-anesthetized rats. Most of the taste neurons were located in the rostral part, while most of the mechanoreceptive neurons were located in the middle part of the VPMpc. Stimulation of the whole oral cavity with four basic taste stimuli produced smaller mean response magnitudes in these thalamic taste neurons than in the parabrachio-thalamic (P-T) taste relay neurons. Receptive fields (RFs) for most of the 21 taste neurons examined were located on the tongue or on the tongue and palate, as with P-T relay neurons. Some neurons had RFs ipsilaterally in the oral cavity, as do P-T relay neurons; but others had RFs contralaterally or bilaterally. Several neurons had large RFs in comparison with those of P-T relay neurons. A majority of the thalamic taste neurons were also mechanosensitive, and their RFs were larger for mechanical stimulation than for taste stimulation. Many (12/17) of the mechanoreceptive neurons had a low response threshold, activated by stroking the tissue with a glass rod; and others had a high response threshold, activated by a pinch with a pair of non-serrated forceps. Their RFs were contralaterally or bilaterally located on either the tongue, or palate or on both regions. One taste neuron and some mechanoreceptive neurons were also excited by mechanical stimulation on the cheek or lip. These observations may represent integrative processes for taste and mechanical oral information at the thalamic level. PMID- 3837866 TI - A depressant area in the lateral nodulus-uvula of the cerebellum for renal sympathetic nerve activity and systemic blood pressure in the rabbit. AB - Electric stimulation at the nodulus and uvula of the cerebellum with a train of 5 10 pulses caused a marked depression of the renal sympathetic nerve activity. The effective sites were located in a small lateral region extending through the dorsal nodulus and encroaching the ventral uvula, at 2.9-3.7 mm lateral to the midline. The depression occurred predominantly contralaterally. Stimulation at this region with pulse trains lasting for several seconds caused a transient reduction of systemic blood pressure. PMID- 3837868 TI - Apparent reversals in trapezia: confirmation of the 'tan apex ratio' heuristic. AB - A new model for predicting the frequencies of apparent reversals in rotating trapezia, proposed by the authors in 1983, is validated and extended in two studies. Experiment 1 showed that the model retained its predictive efficiency over an increased range of shapes and viewing distances, and with trapezia made of sheet metal and not, as previously, of wire. Experiment 2 was designed to investigate an unexpected effect, in which the specificity of prediction was found to decrease as the corners of the stimulus objects were slightly rounded. PMID- 3837869 TI - Shape, height and angular movement in stereokinesis. AB - Cues affecting the apparent height (depth) of a stereokinetic 'core' were investigated by comparing heights for pairs of rotating figures. Apparent height was shown to be independent of the number of bands on the figure and of the geometric perspective by which it was drawn. On the other hand, apparent height was strongly dependent on eccentricity within the figure, with maximum apparent height being achieved at full eccentricity. The reason for the existence of such a definite maximum remains obscure. PMID- 3837870 TI - The role of disparity gradient in stereo vision. AB - Burt and Julesz experimentally demonstrated that, in addition to Panum's fusional area, a quantity defined by them and named disparity gradient also plays a crucial part in deciding whether the human visual system would be able to fuse the images seen by the left and right eyes. The physical meaning of this quantity remains obscure despite attempts to interpret it in terms of depth gradient. Nevertheless, it has been found to be an effective selector of matches in stereo correspondence algorithms. A proof is provided that a disparity gradient limit of less than 2 implies that the matches between the two images preserve the topology of the images. The result, which is invariant under rotations and under relative as well as overall magnifications, holds for pairs of points separated in any direction, not just along epipolar lines. This in turn can be shown to prevent correspondences being established between points which would have to be located in three dimensions on a surface invisible to one eye, assuming opaque surfaces. PMID- 3837872 TI - Self-organized formation of colour maps in a model cortex. AB - A report is presented of computer simulations which demonstrate the applicability of self-organization principles to the formation of a cortical colour map. A two dimensional array of cortical units can be shown to become selectively sensitive to different colour stimuli in an orderly fashion. The precortical part of the simulation model contains three wavelength-sensitive receptors with overlapping sensitivity distributions, and a simple opponent processing stage. Each cortical unit receives the same activity from the precortical stage by adaptive connections. Initially the connections are arbitrary; during self-organization they are changed so that different way. Self-organization of the connections can be shown to take place even when the stimulation of the receptors is totally random, ie the wavelength and purity (and in some simulations the distribution) of each stimulus are selected randomly. PMID- 3837871 TI - A color-contingent prism displacement aftereffect. AB - Observers were trained to point with feedback to red and blue dots whose images had been laterally displaced in opposite directions by a reversible prism. On pretraining and posttraining trials the red and blue dots were aligned vertically in the absence of visual orientation cues. The alignment was modified by the pointing training on the posttraining trials. The colors were aligned in the direction of their prior prismatic displacement. One control experiment showed that the alignment aftereffect requires feedback during the pointing task. Another experiment in which observers pointed to the red and blue dots with opposite arms showed that pointing to both dots with the same arm was necessary to produce the alignment aftereffect. Changes in the perceived position of objects in the visual field occur when changes in perceived limb position cannot compensate for a sensorimotor conflict. Eye torsion or fixation displacements are proposed as alternative mechanisms mediating the aftereffect. PMID- 3837873 TI - Dynamic visual capture: apparent auditory motion induced by a moving visual target. AB - Apparent motion of a sound source can be induced by a moving visual target. The direction of the perceived motion of the sound source is the same as that of the visual target, but the subjective velocity of the sound source is 25-50% of that of the visual target measured under the same conditions. Eye tracking of the light target tends to enhance the apparent motion of the sound, but is not a prerequisite for its occurrence. The findings are discussed in connection with the 'visual capture' or 'ventriloquism' effect. PMID- 3837874 TI - Stroop interference based on the multimodal correlates of haptic size and auditory pitch. AB - In a preliminary experiment subjects were asked to explore three wooden knobs of different sizes and to rate each one on a series of 7-point scales. The results confirmed that an object may possess a number of multimodal qualities that are contingent on its haptic size. The pattern of intercorrelations between the qualities was consistent with the pattern that is observed when subjects respond to pure auditory tones varying in pitch. For example, small (high-pitched) sounds, like small objects, are judged to be sharp, thin, light, weak, fast, tense, and bright. The main experiments used a paradigm based on the Stroop interference effect. Subjects were required to press one of two keys as quickly as possible depending on which of four possible words appeared in the centre of the screen. A 50 Hz or a 5500 Hz tone accompanied each test word, and subjects responded on two keys that differed in size. Subjects were found to respond more slowly when either the pitch of the incidental sound or the size of the key on which they responded was incongruent with the multimodal features represented by the test word. The results confirm that people are automatically and immediately sensitive to the multimodal features of a stimulus when direct sensory evidence for the features is absent. PMID- 3837875 TI - Matching familiar and unfamiliar faces on internal and external features. AB - Two experiments are reported in which subjects were asked to match a photograph of a complete face and a simultaneously presented photograph of internal or external features of a face, deciding whether or not the two photographs were pictures of the same person. In experiment 1 'same' pairs were derived from different pictures of the same face, so that subjects had to match the faces and not the particular photographs used. Matches based on internal features were found to be faster for familiar than for unfamiliar faces, whereas there was no difference in reaction time between matches based on the external features of familiar and unfamiliar faces. Faster matching of internal features of familiar faces was found to hold equally for pairs of photographs that differed in orientation of the face or in facial expression. In experiment 2 'same' pairs were derived from the same photographs, which gave subjects the choice of matching on the basis of the features of the depicted faces or matching the photographs. Reaction times were faster than in experiment 1, and there were no differences between familiar and unfamiliar faces. The study confirms reports of differential saliency of the internal features of familiar faces, and shows that this only holds when stimuli are treated as faces. The finding thus reflects properties of structural rather than pictorial codes. PMID- 3837876 TI - Thatcher and the Cheshire cat: context and the processing of facial features. AB - As has been noted before, a face made gruesome by the inversion of its mouth will not be so perceived when the entire construction is inverted. Results are presented which suggest that this is because the mouth and eye features are evaluated individually (although each feature may influence the evaluation of the other) and the mouth, whether normal or inverted, tends to have its uppermost part assigned as 'top', providing for either a pleasant smiling-mouth expression or a gruesome 'biting-intention' expression. However, the gruesomeness of an inverted mouth is attenuated when eyes are shown below it (producing an inverted smiling face) which suggests that the location of other facial features can also influence the assignments of 'top'. PMID- 3837877 TI - Effect of color on judgments of food aroma and flavour intensity in young and elderly adults. AB - The hypothesis was tested that subjects' judgments of food aroma and flavour strength will be increasingly influenced by food color as the chemosensory differences between foods become less apparent. Elderly (n = 24) and young (n = 22) adults were presented with pairs of food samples and instructed to indicate which sample had the more intense aroma or flavor. The chemosensory discriminations varied in difficulty, and the color of the food pairs was also manipulated so that either they were similarly colored, or the color strength differed so that it was either positively or inversely correlated with flavour strength. Overall, the results failed to support the hypothesis that color alters the perceived intensity of the food aroma or flavor. There was a weak trend toward a greater number of errors among sample pairs that varied in color, especially when color strength was inversely related to flavor strength. Elderly and young adult groups did not differ in chemosensory ability or in their responses to food color differences, although the elderly adults were significantly more certain of the accuracy of their chemosensory judgments. PMID- 3837878 TI - Effect of modality-specific experience on visual and haptic judgment of orientation. AB - Although the 'oblique effect' (poorer performance on oblique orientations as compared to performance on vertical and horizontal orientations) is generally understood as a strictly visual phenomenon, a haptic oblique effect occurs for blindfolded subjects required to set a stimulus rod by hand. Because oblique effects are often attributed to the observer's experience with a predominantly horizontal and vertical environment, we assessed the effect of visual and haptic experience by providing subjects with modality-specific inspection periods to familiarize them with the more poorly judged obliques. Oblique error was significantly reduced in magnitude for judgments made by the modality of experience, and for judgments made across modalities. Rate of improvement, consistency of transfer, and the subjective reports of subjects indicate that this haptic oblique effect is more strongly influenced by visual experience and imagery than by haptic experience. It need not be interpreted as an effect based on factors intrinsic to the haptic modality. PMID- 3837879 TI - Orientation and alignment misjudgement: new geometrical optical illusions? AB - Misjudgement of orientation is demonstrated in drawings of tilted quadrangles with parallel diagonals. Apparent misalignment of apices and/or line-segment ends is shown in drawings of differently oriented rectangle, angles, and line segments. PMID- 3837880 TI - Clinical pathological correlation. PMID- 3837881 TI - Functional and anatomic recovery in the monkey brain following excision of fetal encephalocele. AB - Teratogen-induced herniation of the occipital lobes (encephalocele) in monkey fetuses was repaired by amputation and cranioplasty in utero or postnatally. The in utero-treated animals had normal vision, CT scans indicated normal brain density, and autoradiographic visualization of the striate cortex by the [14C]-2 deoxyglucose mapping revealed almost complete functional and anatomic recovery. The animals treated postnatally were blind, and exhibited significant structural deficit in the operated area. PMID- 3837882 TI - Animal bites causing central nervous system injury in children. A report of three cases. AB - Three cases of animal bites causing central nervous system injury in children are reported. Two infants suffered compound depressed skull fractures as a result of dog bites to the head. An older child suffered direct injury to the spinal cord from a tiger bite. In 2 cases, Pasteurella meningitis occurred. Pitfalls in the management of this type of problem are discussed. PMID- 3837883 TI - [Classification of subtypes and multiphasic observation of schizophrenia]. PMID- 3837884 TI - [Criticism on fetal experimentation at Gifu University]. PMID- 3837885 TI - [Non-therapeutic experimentation using children--an instance at the Psychiatric Department, Fukushima University Medical School]. PMID- 3837886 TI - [Psychiatric research and human rights--disclosure of the problem triggered by the incident at the Utsunomiya hospital]. PMID- 3837887 TI - [Schizophrenia and drug therapy]. PMID- 3837888 TI - [Therapeutic approach in dysfunctions of schizophrenia based on the disability theory]. PMID- 3837889 TI - [Problems associated with diagnosis and treatment of endogenous manias]. PMID- 3837890 TI - [Treatment of depressive disorders and current trends in inpatients]. PMID- 3837892 TI - [Symptom structures in schizophrenia--with special reference to negative and positive symptoms]. PMID- 3837891 TI - [Classification of so-called endogenous psychoses and proposed diagnostic criteria]. PMID- 3837893 TI - [Senile dementia--a neuropathological viewpoint]. PMID- 3837894 TI - [Comments on psychiatric care--with special reference to the incident at the Utsunomiya Hospital]. PMID- 3837895 TI - [Future directions in mental health care--recognition of the present status as the starting point]. PMID- 3837896 TI - [Future directions in mental health care--based on the analysis of the present status in Okayama Prefecture]. PMID- 3837897 TI - [Future directions in mental health care--a specific plan for the improvement of mental health care proposed by the union of workers employed by municipal governments]. PMID- 3837898 TI - [Problems concerning psychiatric care in relation to the duration of hospitalization--a comparison between Japan and the United States]. PMID- 3837900 TI - [Approach to psychiatric patients hospitalized for extended periods at public institutions]. PMID- 3837899 TI - [Problems of so-called extended stay at psychiatric hospitals]. PMID- 3837901 TI - [Ethno-sociological observation of long-term hospitalization]. PMID- 3837902 TI - [Problems of psychiatric patients hospitalized for extended periods in Europe and developing countries]. PMID- 3837903 TI - [Frontal midline theta activity (Fm theta) as a physiological indicator of anxiety]. PMID- 3837904 TI - [Affective disorders and sleep polygraphy]. PMID- 3837905 TI - [Effects of tricyclic antidepressants on sleep polygraphy]. PMID- 3837907 TI - [Schizophrenia and event-related potentials]. PMID- 3837906 TI - [Affective disturbances and contingent negative variation]. PMID- 3837908 TI - [Event-related potentials in schizophrenia and depressive disorders and their use in clinical diagnosis]. PMID- 3837909 TI - [Schizophrenia and eye movements]. PMID- 3837910 TI - Interaction with objects by group-living Saimiri sciureus. AB - We have studied the spontaneous interaction with small, inedible objects by group living Saimiri. Twenty-one animals living in a large outdoor enclosure were presented with a set of 10 novel objects of diverse materials, colors, sizes, and shapes. We have used a sampling technique to record the number of monkeys interacting with each object; qualitative observations complemented these measurements. Next day the same objects were presented again and the observations continued. This experiment was repeated with some variations three times over a period of six months. The highest score for novel objects was obtained immediately upon objects presentation; afterwards the score sharply decreased for that day. On second presentation of the same objects the scores were more evenly distributed during the day, the cumulative total resembling that of day one. Objects' characteristics influenced the amount of interaction with them. The important factors seemed to be the material the objects were made of and their complexity. The objects that were contacted most frequently elicited intense investigative behavior and social play. These results differ from some previous works in which Saimiri were observed to interact only rarely with novel objects. PMID- 3837911 TI - Gender differences in pre-retirement attitudes and activities in a Puerto Rican sample. AB - The objective of this study was to identify the pre-retirement attitudes and activities of personnel at the Medical Sciences Campus of the University of Puerto Rico in order to ascertain the existence of any differences by gender. It was expected that the persistence of the traditional double standard of conduct for men and women in contemporary Puerto Rican society would find women with a more positive attitude towards retirement since, it will not affect their self esteem relative to the breadwinner role as it does for men. For purposes of this study a questionnaire was developed consisting of: background information, activity level indicator, and a pre-retirement attitude indicator. A sample of 235 subjects was systematically selected, of these 66 (28 per cent) are male and 169 (72 per cent) are female. The gender groups were sub-divided into occupational sub-categories of faculty and non-faculty. The average age of female faculty is 41 years as compared to 37 years for non-faculty females but both groups of males average 41 years. Females had lower levels of educational attainment than the male respondents and this results in their having a lower income level. The relation of occupational category to activity was significant but that of gender was not. Gender was found to influence the types of activities participated in. The findings lead to the conclusion that gender continues to play a central role in an individual's attitudes and activities within Puerto Rican society. PMID- 3837912 TI - [ABAC, a closed system: problems and solutions, currency and perspectives]. AB - The ABAC System, as it is currently configured, uses pre-determined panels of antibiotics. This form of presentation is a limit for the use of the large number of new molecules, mainly active on Gram-negative bacteria. Therefore, the introduction of a new disposable, called "Gram-negative bacteria--new molecules" is suggested. Such a device will contain those additional and more widely tested antibiotics. According to recent studies concerning the pathology of Gram positive organisms and the chemotherapeutic treatment for such pathology, changes in the disposable formulations for staphylococci and streptococci are proposed. PMID- 3837913 TI - Serum markers of hepatitis B virus and anti-delta antibody in chronic liver disease. PMID- 3837914 TI - [Slow-type familial alloalbuminemia]. AB - After a brief introduction concerning bisalbuminemia, the authors go on to describe the specific cases they have observed: the subjects are all members of the same family. A total of 15 subjects have been observed; 8 of which have showed evidence of alloalbuminemia of the slow type. The parallel chemical and clinical investigations conducted have demonstrated no evidence of concomitant pathological situations. In addition, further checks carried out 20-30 days later have showed results identical to those of the first observation. PMID- 3837915 TI - [Hematologic characterization and analysis of genetic transmission in a case of double heterozygosity Hb Lepore/beta-thalassemia]. AB - Double heterozygosis condition for hemoglobin variants induce clinical syndromes known as intermediate thalassemias. Their diagnosis is often of certain difficulty because of their low frequency and heterogeneity of clinical expressions. We report a case of a 4 year child admitted to our medical center with a story of hepatosplenomegaly. An appropriate hematological study on patient's family permitted a diagnosis of double heterozygosis for Hb Lepore and beta-thalassemia. Results of hematological investigation are reported. PMID- 3837916 TI - [Research on IgG and IgM anti-Legionella pneumophila group 1 in 101 subjects with pneumonitis]. AB - IgG and IgM antibodies anti-Legionella pneumophila group 1 were detected by fluorescent-antibody technique according to Wilkinson et al. (1979) in the sera of 101 patients with pneumonia. Positive sera were tested by the same authors' modified technique (1981). Our results indicate a low specificity of the first method, since 43.7% of the IgG-positive sera and all the IgM-positive sera were negative when tested by the modified method. 8.9% of the sera were IgG-positive, confirming the relatively high diffusion of the microorganism. In none of the studied patients an increase on antibody titer or an IgM-positivity were observed; in none of the studied cases of pneumonia the aetiological agent was therefore Legionella pneumophila. PMID- 3837917 TI - [Hyperlipidemia in uremic patients in dialysis]. AB - Serum concentrations of cholesterol, triglycerides, high density lipoprotein cholesterol (HDL-C), apoproteins (apo) A and B were compared in 36 hemodialysis patients and in 20 normal controls. Hyperlipidemia was present in 22 patients (59.4%); 15 of them had simple hypertriglyceridemia and 7 had combined hyperlipidemia (i.e., hypertriglyceridemia and hypercholesterolemia). All hemodialysis patients, whether normo- or hyperlipidemic, had normal apo A and low HDL-C serum concentrations. Positive risk factors for atherosclerosis other than low HDL-C (high serum apo B concentration and low apo A/apo B ratio) were present in hyperlipidemic patients only, with no difference between those with simple hypertriglyceridemia and combined hyperlipidemia. These results suggest that the risk for atherosclerosis related to lipid abnormalities may be considered as substantial in hyperlipidemic hemodialysis patients, but not in normolipidemic ones, regardless of the cholesterolemic values. PMID- 3837918 TI - [Acari of food storage facilities. An ecologic and immuno-allergic study]. AB - The authors studied the commonest species of storage mites, living in granaries and in house dust. They found nine species of mites belonging to different systematic groups and were identified: Acarus siro, Tyrophagus putrescentiae, Glycyphagus domesticus, Lepidoglyphus destructor, Chortoglyphus arcuatus, Androlaelaps casalis, Cheyletus fortis, Cheyletus tenuipilis, Thyreophagus entomophagus. Skin tests were performed on 14 patients with house dust allergy, using extracts of three storage mites, most commonly found in house dust (Acarus siro, Glycyphagus domesticus, Lepidoglyphus destructor) and Euroglyphus maynei, Dermatophagoides pteronyssinus, Dermatophagoides farinae. The results of the skin tests have suggested that sensitization to storage mites may be due a degree of cross-reaction between storage species and the two Dermatophagoides. PMID- 3837919 TI - [Value of various hematologic indexes proposed for identifying healthy carriers of the beta-thalassemic trait]. AB - The results of a screening for beta-heterozygous thalassemia conducted on 999 school-boys aged from 11 to 13 are the following: 7.5% of the subjects were taker of the thalassemia trait; 74 subjects over 75 with beta-heterozygous thalassemia had "Mean Corpuscolar Volume" (MCV) values below 70 fl. The results of the subjects with globular volume less than or equal to 79 fl (with or without beta thalassemia) were used to compare the diagnostic accuracy of beta-thalassemia for the hematological indexes of England-Fraser, Mentzer, Shine-Lal and the MCV estimations. This comparison has shown better results in terms of sensibility and specificity for MCV with respect to the other indexes. A more extensive application of the study could be convenient in order to evaluate if the MCV level of 70 fl is effective to discriminate between beta-thalassemia and non thalassemic microcytosis. PMID- 3837920 TI - Haematological changes in natural and experimental peste des petits ruminants virus infection in goats. PMID- 3837921 TI - [A case of pulmonary tuberculosis in a dromedary]. PMID- 3837922 TI - [A strain of Cowdria ruminantium isolated in Guadeloupe (French West Indies)]. PMID- 3837923 TI - [Parasitic diseases of monogastric animals in Guadeloupe]. PMID- 3837924 TI - [Parasitic diseases of ruminants in Guadeloupe]. PMID- 3837925 TI - [Epidemiology of digestive parasitic diseases of cattle in Guadeloupe]. PMID- 3837926 TI - [Efficacy against Glossina morsitans submorsitans of screens of different colors, with or without addition of black mosquito netting]. PMID- 3837927 TI - [Toxicity of Calotropis procera. Effect of a Calotropis procera-based feed on embryonic and neonatal mortality in laboratory mice]. PMID- 3837928 TI - Control of reendothelialization: the importance of endothelial microfilaments, microtubules and centrosomes in endothelial locomotion. AB - It appears then that the F-actin microfilaments and the centrosome and associated microtubules of the endothelial cytoskeleton are important in the repair of endothelial denudation. These dynamic cytoskeletal systems are able to act rapidly and can be regulated by a variety of factors including neighboring cells, extracellular matrix, and soluble factors in the environment. One testable hypothesis is that atherogenic agents which have been shown to enhance atherosclerosis may in fact act by perturbation of the endothelial cytoskeleton resulting in abnormal repair of the endothelial monolayer. PMID- 3837929 TI - Synthesis and turnover of protein-bound Nt-methylhistidine in cultured vascular smooth muscle cells. AB - Rabbit aortic smooth muscle cells cultured for 14 days in second passage produce significant amounts of protein-bound radioactive Nt-methylhistidine when pulsed with radiolabelled histidine. Much of the radioactive Nt-methylhistidine is located in the actin synthesized by these cells. Pulse chase data also suggest this newly synthesized Nt-methylhistidine disappears from the cell layer at two distinctly different rates: one with a half-life of 2.4 days, and the other with a half-life of approximately 17 days. Radioactive Nt-methylhistidine to histidine ratio reaches a maximum approximately 8 days following the 1-day [14C]histidine pulse. During the initial 15-day chase period, there is a substantial net accumulation of total Nt-methylhistidine in the culture flasks. The data presented in this communication indicate that methods to evaluate Nt methylhistidine synthesis and disappearance in cultures are feasible when radiolabelled histidine is employed. PMID- 3837930 TI - Mercury-induced autoimmune glomerulonephritis in inbred rats. I. Kinetics and species specificity of autoimmune responses. AB - The nephropathy observed in rats after administration of mercuric chloride can be used to clarify the mechanisms underlying renal autoimmunity induced by chemicals. As a necessary preliminary step in the study of this animal model, we have investigated the kinetics and species-specificity of autoimmune responses to renal antigens. By a recently developed enzyme-linked immunosorbent assay (ELISA), circulating autoantibodies to the glomerular basement membrane of the kidney (anti-GBM) have been detected within 8 days after the initiation of mercuric chloride treatment. Anti-GBM antibodies reach a peak by 15 days and then decrease rapidly in the following 2 weeks. Extensive cross-reactions between rat and human GBM antigens have been detected by ELISA, indicating a high degree of conservation of some renal autoantigens and suggesting certain similarities between the autoimmune response induced in rats by mercuric chloride and that observed in human glomerulonephritis caused by anti-GBM. Dose-response studies have been performed to ascertain whether anti-GBM responses are correlated with massive kidney damage and release of renal antigens. We have noted that a wide range of levels of mercuric chloride are capable of stimulating the production of anti-GBM and that animals receiving this chemical in as low a concentration as 0.02 mg/100 g body weight (i.e. a dose ten times lower than those causing massive nephrotoxic effects) still have anti-GBM specifically bound to their kidneys. Thus, it is possible that the administration of mercury compounds to BN rats results in kidney autoimmunity not only because of the release of renal autoantigens, but also through the activation of specific lymphocytes and/or disruption of regulatory networks. Finally, we have observed that both BN and MAXX rats produce anti-GBM after mercuric chloride treatment, while M520 rats do not. Since the MAXX strain was initially obtained from a cross of BN and Lewis rats and shares antigens of the major histocompatibility complex with the BN strain, our findings stress the importance of genetic factors in chemical-induced autoimmunity and suggest that a similar situation may occur in human subjects exposed to environmental chemicals. PMID- 3837931 TI - Effect of phenobarbital on the content of RNA polymerase B regulatory factors during diethylnitrosamine-induced hepatocarcinogenesis in the rat. PMID- 3837932 TI - Growth rate of primary bronchogenic carcinomas and tumor size. PMID- 3837933 TI - Long-term oral administration of potassium bromate in male Syrian golden hamsters. PMID- 3837934 TI - The anti-nuclear movement of the medical men. PMID- 3837935 TI - Role of reversed connection in conducting the pedagogic process in post-graduate training of health care organizers. PMID- 3837936 TI - Smoking during pregnancy: its effects on the intrauterine development. PMID- 3837937 TI - [Analysis of the quality of pregnancy recuperation care in Magdeburg District]. PMID- 3837938 TI - Epidemiological considerations on the medical and socio-economic implications of arterial hypertension (observations in a knit ready-made clothing manufactory). PMID- 3837939 TI - Management improvement of medical assistance granted in urban out-patient clinics (results of practical experience). PMID- 3837940 TI - Readjustment organization and its import in shipbuilding industry. PMID- 3837941 TI - A new device of esophageal dilatation for the severe and recurrent postoperative stenotic stoma. PMID- 3837942 TI - The procedure to get minimum deviation for the data processing of evoked potential study. PMID- 3837943 TI - The correlation between the grading and nuclear size of renal cell carcinoma. PMID- 3837944 TI - The U wave change during increased blood pressure. PMID- 3837945 TI - Baseball elbow of young players. PMID- 3837946 TI - Epidemiological study on serum lactate dehydrogenase (LDH) isozyme and serum vitamin C. PMID- 3837947 TI - An experimental study on entrapment neuropathy--electrophysiological study. PMID- 3837948 TI - Plasma cell leukemia accompanied by polyclonal gammopathy and congenital tumor in the atrioventricular node. AB - A 32-year-old man with plasma cell leukemia and congenital tumor of the atrioventricular node is described. Although M protein could not be detected by immunoelectrophoresis, the examination of bone marrow atypical plasma cells with immunofluorescent and immunoperoxidase showed that most of these plasma cells produced IgG or IgA. Also some plasma cells possessed concomitantly both IgG and IgA. An electrocardiogram revealed complete atrioventricular block. The patient died of aspergillosis and bleeding in the lung. Postmortem examination revealed the infiltration of atypical plasma cells in the bone marrow, spleen, liver and lungs, and infiltration of mesothelial tumor cells in the atrioventricular node. PMID- 3837949 TI - Age and sex distribution in chronic renal failure patients at dialysis induction. AB - Age distribution at dialysis induction among patients with chronic renal failure was studied in 579 cases. Age distribution differed depending on the primary renal diseases and sex. In chronic glomerulonephritis, males were most numerous in the 30-39 year-old group, followed by the 40-49 and 20-29 year-old groups. They decreased with age. Females showed the same frequencies among the 20-29, 30 39, 40-49, 50-59, 60-69 and 70-79 year-old groups. However, the 50-59 year-old group had the most cases. Among cases of diabetic nephropathy, males were most numerous in the 50-59 year-old group and females in the 60-69 year-old group. Progression of the disease to renal failure seemed to be more rapid in males than in females. Natural history and possible risk factors in patients with chronic renal failure maintained on hemodialysis were discussed. PMID- 3837950 TI - 'So-called mesothelioma' of the atrioventricular node--immunohistochemical study. AB - So-called mesothelioma of the atrioventricular node is a rare lesion and a cause of sudden, unexpected death. A case of congenital complete heart block accompanied by polyclonal immunoblastosis is presented. The histological features of our case are fundamentally similar to that of the cases previously reported. Immunohistochemical findings indicated that the tumor may have originated from aberrant epithelial or mesothelial tissue. PMID- 3837951 TI - Herpes simplex encephalitis: further evidence for persistent infection in the CNS. AB - Herpes simplex virus (HSV) antibody titers and IgG, IgM and IgA concentrations in the cerebrospinal fluid were serially measured in a patient with HSV encephalitis during a follow-up period of 32 months. HSV antibody titers, all classes of immunoglobulins and Ig% showed significant elevation during the course of illness, though IgM% and IgA% gradually declined after the acute phase. Autopsied brain tissue failed to yield a virus isolate, but conspicuous perivascular lymphocyte infiltrate, which is compatible with HSV encephalitis, was seen. These observations suggest the occurrence of HSV persistence and persistent antigen stimulation in the central nervous system, analogous to the well-recognized latent condition within the trigeminal ganglion. PMID- 3837952 TI - Neurological manifestations in chronic alcoholics. AB - One hundred and twenty-two chronic alcoholics were examined neurologically after more than 14 days of abstinence. A high frequency of the following was noted: abnormal smooth pursuit eye movement, hyperreflexia, snout reflex, incoordination, and signs suggesting peripheral neuropathy. Some significant mutual correlations among these neurological signs were noted, although they characteristically appeared independently and no patient showed typical clinical features of classical alcoholic neurological diseases, such as Wernicke-Korsakoff syndrome. Only abnormal smooth pursuit eye movement and incoordination showed significant correlation with nutritional status and these signs were more frequently present in the poor nutritional status group. There seemed to be a correlation between abnormal smooth pursuit eye movement and cortical atrophy on head CT scan. The possible pathogenetic mechanisms underlying these neurological abnormalities are discussed. PMID- 3837954 TI - On the practice of medicine and on the culture and customs in Japan--an impression of an American student. PMID- 3837953 TI - Measurement and comparison of gastric emptying and esophageal manometry in patients with reflux esophagitis. AB - Forty-two patients with reflux esophagitis were referred for gastric emptying evaluations. Esophageal manometry was performed on them. Gastric emptying was significantly delayed in patients with reflux esophagitis compared to normal subjects. Lower esophageal sphincter pressure (LESP) showed no significant difference between patients and controls. Acid clearing test was prolonged in patients with reflux esophagitis more than in normal subjects. The subjects were divided into two groups for gastric emptying evaluations; a group with delayed gastric emptying and one with rapid gastric emptying as compared with normal criteria. LESP in 7 cases of rapid gastric emptying among 42 patients (16.6%) was only significantly lower than in normal subjects. The pathogenesis of reflux esophagitis had been previously thought to be a low LESP and/or a prolonged acid clearing. However, we think that a delayed gastric emptying may be one of the pathogenetic characteristics. PMID- 3837955 TI - Development and application of a direct radioimmunoassay for aldosterone in saliva. AB - A previously described direct radioimmunoassay for plasma aldosterone has been modified to enable direct measurement of the steroid in saliva. The specificity of the method has been demonstrated by assay after high pressure liquid chromatographic purification of saliva extracts. Assay of matched plasma and saliva samples taken from normal subjects during unrestricted and controlled sodium intakes, either under basal conditions or while undergoing ACTH stimulation or dexamethasone suppression, confirms that salivary aldosterone values provide a good reflection of levels in plasma. Mean salivary aldosterone values are approximately one-third of those in plasma. Sampling immediately upon waking appears to provide reliable values for salivary aldosterone, and the potential application of this technique to the screening of hypertensive patients is discussed. PMID- 3837956 TI - Effect of in vitro ketoconazole on steroid production in rat testis. AB - In an attempt to confirm where in the testosterone (T) biosynthetic pathway of the rat testis ketoconazole (KTZ) inhibits T production, rat testicular mince was incubated with either 10 micrograms/ml or 100 micrograms/ml KTZ in the presence and absence of hCG (1 IU), and intratesticular pregnenolone (delta 5P), progesterone (P), 17-alpha-hydroxyprogesterone (17 alpha-HP), androstenedione (A) and testosterone (T) were assayed. In the absence of hCG, 10 micrograms/ml KTZ was sufficient to reduce intratesticular T by 80%. At this concentration of KTZ, intratesticular 17 alpha-HP (ng/g testis, mean +/- SEM) increased from 0.3 +/- 0.1 to 1.3 +/- 0.2 (p less than 0.0025), whereas intratesticular A decreased from 84 +/- 7 to 17 +/- 1 (p less than 0.005). KTZ did not inhibit the conversion of P to 17 alpha-HP. From these data it was concluded that KTZ has its inhibitory effect on testosterone biosynthesis in the rat testis primarily at the step catalyzed by the 17,20 desmolase enzyme. PMID- 3837957 TI - Synthesis of some analogs of estradiol. AB - As part of a search for estradiol derivatives designed for conjugation to carboxyl or amine functions of anti-cancer agents or suitable derivatives thereof, estradiol analogs with side chains at the C-16 or -17 position were prepared for biological assay. These analogs include several which have a substituted nitrogenous function at C-17. The avidity of some of these analogs for binding to estrogen receptor was found to be of a low order. PMID- 3837959 TI - Saving the world. PMID- 3837960 TI - A study of vocal cord palsy. PMID- 3837958 TI - Monoclonal antibodies--of mice and men. PMID- 3837962 TI - Aging on the inside: current status of geriatric medicine, 1985. PMID- 3837963 TI - Alcoholism in a university faculty. PMID- 3837961 TI - Degenerative lesions of a coronary chemoreceptor and nearby neural elements in the hearts of victims of sudden death. AB - A coronary chemoreceptor and its neighboring nerves and ganglia were studied by serial sections of tissue taken from the hearts of sixteen victims of sudden unexpected death. Either focal or extensive inflammatory destruction was present in the chemoreceptors of 13 of the 16 hearts, and similar abnormalities of local nerves and ganglia were present in all 16 hearts. Since an identical coronary chemoreceptor in the dog has previously been shown to be the site of origin of a powerful reflex with major influence upon the electrical activity heart, the functional significance of the neural abnormalities found in these 16 human hearts may include important distortion of cardiac rhythm, conduction or repolarization. Future studies are needed to determine the prevalence of such lesions in the hearts of other victims of sudden death and among control subjects, as well as to determine the etiology of this special neuropathology of the heart. PMID- 3837964 TI - Synchrotron radiation for transvenous coronary angiography. PMID- 3837965 TI - Emporiatric enteritis: lessons learned from U.S. students in Mexico. AB - In the studies reported, evidence has been presented that U.S. students traveling to Mexico represent a model for the study of travelers' diarrhea. The incidence of illness acquisition approximates that published in other studies of travelers. Natural immunity was shown to develop as students remained in Mexico presumably through repeated exposure to prevalent agents, particularly ETEC. ETEC, shigella strains and no detectable agent represented the largest groups when etiologic assessment was made. Food probably served as the important source of diarrhea particularly that due to ETEC and shigella strains. The level of bacteria isolated from food suggested that organism replication occurred due to improper temperature storage rather than to heavy initial contamination. The location of food consumption was related to degree of risk: self preparation was the safest, eating in Mexican homes the least safe and consumption of food in public restaurants was intermediate in risk. Water probably played a role in the transmission of viral infection. The risk of water contamination appeared to be highest during the rainy seasons. Finally, the antimicrobial agents TMP/SMX and TMP alone were shown to effectively prevent and treat this form of travelers' diarrhea. PMID- 3837966 TI - A rational scientific basis for subclassification of antiarrhythmic drugs. AB - The subclassification of Vaughan Williams Class I agents into IA, IB, and IC groups on empiric and clinical grounds has recently been given a cellular electrophysiologic scientific basis. Based on the kinetics of association and dissociation of the drugs with sodium channels, 3 distinct subgroups can be defined. These observations help to explain the clinical utility of the algorithms to use the agents in patients and provide a reference for discussing the new drugs with antiarrhythmic properties being discovered. PMID- 3837967 TI - Hospice: from social movement to health care industry. PMID- 3837968 TI - Elevated blood pressure and angiotensin II are associated with accelerated loss of renal function in diabetic nephropathy. PMID- 3837969 TI - [Effect of vitamin K3 (menadione) on the hepatic content of electrolytes]. PMID- 3837970 TI - Increase of acetylcholinesterase activity of the cerebrospinal fluid of the rabbit after sciatic nerve stimulation. Its blockade by atropine. PMID- 3837971 TI - On the origin of ring chromosomes about an apparently non-deleted r(18) (p11q23). PMID- 3837972 TI - [Obtention of protein concentrate from Cassia aphylla seeds. Studies of supplementation]. PMID- 3837973 TI - [Correlation between RAST and skin tests in atopic patients]. PMID- 3837974 TI - [Studies of the mother-child relationship in the Japanese south-western islands]. PMID- 3837975 TI - [A study of four anti-streptococcal antibodies in rheumatic fever and diseases related with streptococci in childhood]. PMID- 3837976 TI - [Studies of therapy and prognosis of asthma in children]. PMID- 3837977 TI - Pyrimidine salvage enzymes in human tonsil lymphocytes. I. Separation and properties of thymidine kinase isoenzymes. AB - Two forms of deoxythymidine kinase were separated from human tonsillar lymphocytes on DEAE-Sephadex column (peak 1 and peak 2 isoenzymes) and identified by gel electrophoresis. Both isoenzymes were found in freshly prepared lymphocytes as well as in lymphocytes cultured in the presence or absence of phytohaemagglutinin, but freshly prepared and phytohaemagglutinin-stimulated cells contained higher activity of peak 1 isoenzyme than the cultured, non stimulated ones. Kinetic properties and feed-back inhibition of the two separated isoenzymes were compared. The apparent Km values of isoenzyme 1 and 2 were 4 microM and 5 microM for thymidine and were 0.15 mM and 0.12 mM for ATP, respectively. Isoenzyme 1 was found to be more sensitive to heat denaturation at 55 degrees C, and to feedback inhibition by dTTP than isoenzyme 2. On the contrary, isoenzyme 1 was more resistant to dCTP inhibition than the other one. It is concluded that the isoenzyme 1 activity correlates with the synthesis of DNA, while the activity of isoenzyme 2 seems to be constant. The high activity of isoenzyme 1 in freshly isolated tonsil lymphocytes supports their active proliferation in the organ. PMID- 3837978 TI - Stability, heat stability and heat sensitivity of proteins: thermodynamic considerations. AB - The heat sensitivity and stability of a protein should be characterized by the Arrhenius parameters of the irreversible denaturation. The terms "thermostability" or "activation enthalpy" and "activation entropy" of denaturation as "thermodynamic parameters of protein stability" are misleading. The terms "measure of heat sensitivity" and "measure of stability" should be used as comparative data for protein structure. PMID- 3837979 TI - Liposome mediated DNA-transfer into mammalian cells. AB - We have investigated the interaction of mammalian cells with liposome encapsulated DNA. Tissue cultured mammalian cells were exposed to large, unilamellar phosphatidyl serine liposomes containing DNA molecules from different animal cells or prokaryotic organisms. The liposomes bind rapidly to the surface and are taken up by the cells and significant proportion of the encapsulated DNA is transported to the nuclei. Transient expression of the foreign genetic material could be detected in high percentage of the treated cells for a few days. During this period of time foreign DNA is present in both free and integrated form, however, the free form soon disappears. Stable transformant cell colonies--with continuous expression of new gene(s)--were isolated under selective pressure with a frequency of approx. 10(-5). PMID- 3837980 TI - The hypothalamic and neurohypophysial vasopressor and oxytocic activities under conditions of chronic tobacco smoke exposure in the rat. AB - Chronic tobacco smoke exposure in the rat was followed by a distinct decrease of both hypothalamic and neurohypophysial oxytocic activity as well as of neurohypophysial vasopressor activity. It is assumed that tobacco smoke exposure increases the release of both neurohypophysial hormones under conditions of chronic experiment. PMID- 3837981 TI - Thyroid hormone binding to the rat heart cytosol proteins. AB - The properties of the thyroid hormone binding to rat heart cytosol were studied. Cytosol proteins were found to bind specifically T4 with high affinity (Ka approximately equal to 10(8)M-1) and rT3 with lower affinity (Ka approximately equal to 10(7)M-1), but they do not bind T3. The binding of both T4 and rT3 was pH dependent, however, while T4 binding had the highest values between pH 7.0 and 10, rT3 binding increased from pH 6.0 to 10.7. Divalent ions also stimulated T4 and rT3 binding. Sulfhydryl groups blocking agents such as N-ethylmaleimide (NEM) and iodoacetamide significantly decreased rT3 binding and had less profound effect on binding of T4 to cytosol proteins. The importance of free -SH groups remains unclear as dithiothreitol was found to diminish the binding of T4 and rT3. PMID- 3837982 TI - Absence of selective brain cooling in pyrogen-induced fever in rabbits. AB - In 9 rabbits the effect of intravenous administration of E. coli pyrogen 0.5 microgram/kg on the reaction of selective brain cooling was studied at ambient temperatures of 20, 30 and 40 degrees C. In the freely moving animals the temperatures of the brain, carotid artery and nuchal muscles were measured with an accuracy down to 0.05 degree C and the temperatures of the ear pinna and nasal mucosa were measured accurate to 0.5 degree C. The respiratory rate was measured as well. It was found that the spontaneous febrile reaction without the component of passive hyperthermia failed to cause selective brain cooling, even if its temperature reached higher values than in case of brain temperature rise caused only by high ambient temperature. On the other hand, when the high ambient temperature caused thermal panting, pyrogen administration at an ambient temperature of 30 degrees C could reduce panting, while at an ambient temperature of 40 degrees C intense panting initiated prior to the appearance of the febrile reaction and was associated with the fever and outlasted it. PMID- 3837983 TI - Effect of 2-deoxy-D-glucose on lipolytic processes in blood and adipose tissue of rat. AB - The effect of 2-deoxy-D-glucose on lipolytic processes in the blood and adipose tissue was studied. Rats treated with this antimetabolite showed a significant increase in serum glucose, FFA and glycerol level, as well as in the lipid mobilizing activity. On the other hand, the lipolytic activity of rat serum decreased when compared to control group. From these results it may be concluded that during hypothermia induced by administration of 2-deoxy-D-glucose intracellular, but not intravascular, lipolysis is enhanced. PMID- 3837984 TI - Muscarinic receptors of rat lymphocytes--differences in young and old animals. AB - Muscarinic receptors were studied on lymphocytes from young and old Wistar rats. Binding studies were performed by the use of [3H]-QNB, a specific muscarinic antagonist. Some differences between these two groups were observed. Maximal binding of [3H]-QNB and half time of the maximal binding is lower for lymphocytes of old rats [3H]-QNB receptor complexes could not be found in the supernatants derived from lymphocytes of old animals. Higher ability to loose or hide the muscarinic receptors was also observed in this group of rats. All these observations could reflect a more effective degradation, as well as a lower level of muscarinic receptors exposed on lymphocytes from old animals. PMID- 3837985 TI - A method for analysis of thermosensitivity in the insect CNS. AB - A set for analysis of temperature effects on the CNS activity in insects is described. Thermostimulation can be applied to the whole body or to only some regions of CNS. An amplitude and rate interval analyzer (in cooperation with a microcomputer) makes it possible to do an analysis of the correlation between temperature and the neuronal firing rate. As an example of the use of this set an experiment on American cockroach Periplaneta americana was described. Thermosensitivity of the prothoracic ganglion was presented. PMID- 3837987 TI - The application of the finite element method to the analysis of craniofacial growth and form. AB - It has been shown previously that all customary methods of analysis of craniofacial skeletal growth, closely based on the techniques of roentgenographic cephalometry, share common geometric and conceptual constraints that make all such descriptions reference frame dependent; i.e., these descriptions vary with each method of registrations and superimposition (stacking) of growth cross sections (x-rays). The use of the concepts of continuum mechanics, and of the numerical techniques of the finite element method, permit a reference frame invariant tensor description of growth. An example of this method is provided by the analysis of the growth of the rat neurocranium and maxillary complex in the period 13-49 days of age. The finite element method should find wide application in the description of cephalic growth, in normal and pathological conditions. PMID- 3837986 TI - The skull: mould or cast? PMID- 3837988 TI - Reflexions on craniofacial growth research. PMID- 3837990 TI - Public health institutions: the role of science and technology. Proceedings of the international symposium held for the fiftieth anniversary of the Istituto Superiore di Sanita. Rome, May 21-23, 1984. PMID- 3837989 TI - The significance of skull growth studies for the treatment of cleft palate patients. PMID- 3837991 TI - The Istituto Superiore di Sanita: past, present and future. PMID- 3837992 TI - The role of the NIH in improving public health. PMID- 3837993 TI - Current health problems facing industrialised countries. PMID- 3837994 TI - The contribution of the International Agency for Research on Cancer to the prevention of cancer. PMID- 3837995 TI - The role of the National Institute for Medical Research in improving public health: the support from research and technological developments. PMID- 3837996 TI - The National Institute of Hygiene in Poland. PMID- 3837997 TI - [Role and place of the Institute of Hygiene and Public Health of Bucarest in protecting the health of the population of the Socialist Republic of Romania]. PMID- 3837999 TI - The role of the National Institute of Hygiene in improving public health in Hungary. PMID- 3837998 TI - The contribution of the National Institute of Health for the development of public health in Portugal. PMID- 3838000 TI - Influence that research and technological developments have had on the ability of the FDA to protect the public health. PMID- 3838001 TI - The National Institute of Health in Japan. The contribution in public health. PMID- 3838002 TI - The National Institute of Public Health in Norway. Recent responses to public health problems in modern society. PMID- 3838003 TI - The role of public institutions in improving health in Morocco. PMID- 3838004 TI - [Action of the International Organization of Labor in the field of industrial safety and health]. PMID- 3838005 TI - The role of scientific research in the development of occupational health service. PMID- 3838006 TI - ISPESL: its role in public health. PMID- 3838007 TI - Science and technology in an institute of public and environmental health. PMID- 3838008 TI - Role of a research institution in the prevention of occupational hazards. PMID- 3838009 TI - Statens Seruminstitut: present activities and future trends. PMID- 3838010 TI - [Institute of Health and Epidemiology: its origins, evolution, past and present missions]. PMID- 3838011 TI - The role of China National Center for preventive medicine in disease control. PMID- 3838012 TI - Role of a research council in improvement of health. PMID- 3838013 TI - Improving public health: blending science and regulation. The role of the Federal Health Office. PMID- 3838014 TI - [The involvement of the Italian Research Council in the "protection of health "]. PMID- 3838015 TI - The role of IAEA in promoting health care services in developing countries. PMID- 3838016 TI - FAO contribution to public health through livestock disease control with emphasis on viral disease. PMID- 3838017 TI - Biomedical research policy of the European Community. PMID- 3838018 TI - [ Role of the ENEA in public health ]. PMID- 3838019 TI - [The National Academy of Sciences, known as the Forty: its contribution to the development of basic medical sciences ]. PMID- 3838020 TI - New perspectives: the first ten years. Canadian developments. PMID- 3838022 TI - Role of the Pontifical Academy of Sciences in improving public health. PMID- 3838021 TI - Presentation of UNIDO: public pharmaceutical industry in the service of health. PMID- 3838023 TI - Origins, past and present of the "Istituto Superiore di Sanita" on the 50th anniversary of its foundation. PMID- 3838024 TI - [Surgical therapy in myomatous tumors of the stomach]. PMID- 3838025 TI - [A case of rhinosporidiosis]. PMID- 3838026 TI - [Instrumental and bloodless methods of diagnosis of colonic cancer (importance for clinical and therapeutic management]. PMID- 3838027 TI - [Monofilament sutures in digestive system surgery]. PMID- 3838028 TI - [Multiple breast metastasis of cutaneous malignant melanoma]. PMID- 3838029 TI - [Prevention of experimental thrombosis of the coronary artery, in anesthetized dogs, with a low molecular weight heparin, enoxaparine (PK 10169)]. PMID- 3838030 TI - [Simultaneous assay of papaverine and papaveraldine. Applications to the control of pharmaceutical preparations and kinetic study of oxidation reactions]. PMID- 3838031 TI - [Coulometric assay of anti-inflammatory agents derived from pyrazolone]. PMID- 3838032 TI - [The resin of Eperua grandiflora (Aublet) Benth (leguminous Caesalpiniaceae)]. PMID- 3838033 TI - [Autoradiographic study of the distribution of tritium in Macaca monkeys treated with a tritiated extract of Ruscus]. PMID- 3838034 TI - [Synthesis and antibacterial activity of new analogs of trimethoprim]. PMID- 3838035 TI - [New method of synthesizing alpha-fluorophenylacetonitriles]. PMID- 3838036 TI - [Stability of iridoids of Harpagophytum procumbens DC. during the preparation of powders and atomized drugs]. PMID- 3838037 TI - [The opening of dihydropyrone rings in alkaline medium]. PMID- 3838038 TI - [Society of Genetics of Chile. 17th annual meeting. Santiago, Chile, 5-6 October 1984. Abstracts]. PMID- 3838039 TI - [Chilean Society of Biochemistry: 9th annual meeting. Lo Barnechea, Chile, 1-3 August 1985. Abstracts]. PMID- 3838040 TI - Cooperative behaviour in monomeric enzymes. Change of negative to positive cooperativity by effect of a ligand. AB - Three steady-state models were analysed to see if they could reproduce the following kinetic characteristics in a monomeric enzyme with two substrates: a) kinetic cooperativity with respect to the first substrate but not to the second; b) modulation of the kinetic cooperativity for the first substrate by the concentration of the second; c) change in the sign of the kinetic cooperativity at very low concentrations of the second substrate. A slow transition model previously proposed for vertebrate "glucokinase" (hexokinase D), model I, (Olavarria et al., 1982) was able to reproduce characteristics a and b, but never c. The "mnemonical" model (Ricard et al., 1974), model II, also reproduced characteristics a and b, and failed to reproduce c. Thus when observations were performed at concentrations of the first substrate around K0.5 it was possible to observe a decrease in the Hill coefficient (h) relative to the decrease in the concentration of the second substrate, but values lower than 1.0 were never obtained. At extremely high substrate concentrations, the second substrated did not affect the cooperativity of the enzyme for the first substrate. Model III was similar to Model I, but it was considered that only the enzyme conformer with the higher affinity for the first substrate was catalytically active. With this model it was possible to change positive cooperativity into negative if the second substrated altered the frequency of the conformational transition. PMID- 3838041 TI - Pyruvate kinase: studies on affinity labeling and active-site structure using the rabbit muscle enzyme. AB - Important advances have been made in recent years in the study of the structure of pyruvate kinase: the amino acid sequence of the enzymes from chicken muscle and yeast have been established and the three-dimensional structure of the cat muscle enzyme has been determined at 0.26 nm resolution. Work in our laboratory has shown that dialdehyde-ADP (oADP) can be used as an affinity label of rabbit muscle pyruvate kinase: if the enzyme is incubated with cold oADP in the presence of high ADP concentrations, dialyzed and then incubated with 14C-oADP, the enzyme inactivates and one mole of radioactive oADP incorporates per mole of enzyme subunit. A labeled peptide with a molecular weight of about 5900 has been purified from a tryptic digest of the modified enzyme. The first 26 residues of the peptide have been sequenced and this sequence is identical to a region in the chicken muscle enzyme and a peptide isolated from the bovine muscle enzyme specifically labeled with trinitrobenzenesulfonate. High homology is also found with a region of the yeast enzyme. All this suggests that the isolated peptide is part of the active site; the modified amino acid, probably a lysine, seems to be located in one of the alfa helices of domain A of the enzyme, according to the x ray data. PMID- 3838042 TI - Influence of temperature on the stability of pertussis vaccine. PMID- 3838043 TI - Normal and parasitized stages of spiders. II. Development of Chlamydia-like microorganisms infesting ovaries of Segestria senoculata. PMID- 3838044 TI - Antibiotic sensitivity of Salmonellae isolated from poultry. PMID- 3838045 TI - Natural inhibitors of complement. I. Anticomplementary activity associated with pokeweed mitogen (PWM). PMID- 3838046 TI - An experimental study of a typhoid vaccine inactivated with beta-propiolactone. PMID- 3838047 TI - Complement-mediated aggregation of sensitized erythrocytes. PMID- 3838048 TI - [The "third ear". A re-appraisal of the anamnesis]. PMID- 3838049 TI - [Segmental blocks of the right bundle-branch and electrically inactive areas. Differential electro-vectorcardiographic diagnosis]. PMID- 3838050 TI - [Different localizations of interatrial paraganglia in the adult human heart]. PMID- 3838051 TI - [Clinical characterization of coronary insufficiency in the aged]. PMID- 3838052 TI - [Critical analysis of the values obtained by one-dimensional echocardiography for the detection and grading of pulmonary hypertension]. PMID- 3838053 TI - [Water-electrolyte and acid-base disorders in heart insufficiency]. PMID- 3838054 TI - [Myocardial protection in heart surgery. Comparative study of 3 methods]. PMID- 3838055 TI - [Dynamics of the postmortem contraction of the left ventricle]. PMID- 3838056 TI - [Abnormalities of segmental contraction in chronic aortic valve insufficiency]. PMID- 3838057 TI - [The anomalous band. A critical analysis of the anatomy and embryology of its elements]. PMID- 3838058 TI - [Holiday heart syndrome]. PMID- 3838059 TI - [The RSR' pattern in the V1 lead in patients with and without interatrial septal defects--electro and vectorcardiographic study]. PMID- 3838060 TI - [Acute dissection of the aorta. Immediate and late follow-up of patients subjected to clinical and surgical treatment]. PMID- 3838061 TI - [Ventricular function in pulmonary stenosis, mitral stenosis, mitral insufficiency [corrected], aortic insufficiency and coronary disease. Critical analysis of the variables used. PMID- 3838062 TI - [Value of the cardiothoracic index in the evaluation of cardiac performance in dilated cardiomyopathies]. PMID- 3838063 TI - [Reoperation in patients with heart valve prostheses. Analysis of 64 cases]. PMID- 3838064 TI - [Pulmonary changes in different forms of intracranial hemorrhage]. PMID- 3838065 TI - [Experimental evaluation of the variations of glycogen, total lipids, triglycerides and water levels in the myocardium subjected to anoxic hypothermic arrest]. PMID- 3838066 TI - [Interest of Doppler echocardiography in the evaluation of heart valve prosthesis. Report of 2 cases]. PMID- 3838068 TI - [Cardiac rigor mortis]. PMID- 3838067 TI - [Direct communication of the right pulmonary artery and the left atrium. A case report]. PMID- 3838069 TI - Bivariate path analysis of familial resemblance for reading ability and symbol processing speed. PMID- 3838070 TI - Genetic analysis of the light dependence of courtship in Drosophila subobscura. PMID- 3838071 TI - Genetic variation in the male courtship sound of Drosophila littoralis. PMID- 3838072 TI - Relation between the genetic variability of digging behavior of Drosophila larvae and their susceptibility to a parasitic wasp. PMID- 3838074 TI - The molecular basis of movement through membranes. PMID- 3838073 TI - A twin study of ethanol metabolism. PMID- 3838075 TI - Activation of renal 1,25-dihydroxyvitamin D3 synthesis by phosphate deprivation: evidence for a role for growth hormone. AB - In vitro 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] production in kidney slices from normal intact rats averaged 16 +/- 4 pmol/g . h and was increased about 8-fold by phosphate deprivation and 5-fold by calcium deprivation to levels averaging 128 +/- 12 and 84 +/- 19 pmol/g x h, respectively. Hypophysectomy in phosphate deprived rats completely abolished any increase in 1 alpha-hydroxylase activity, while calcium deprivation in hypophysectomized (hypox) rats resulted in a 4-fold increase in 1 alpha-hydroxylase activity. Replacement of hypox rats fed a low phosphorus diet with pituitary extracts resulted in a 4-fold stimulation of 1 alpha-hydroxylase activity in response to the hypophosphatemic stimulus. However, replacement of hypox rats fed a normal phosphorus diet with pituitary extract stimulated 1 alpha-hydroxylase activity only 2-fold. Replacement of hypox rats fed a low phosphorus diet with GH resulted in a 3.5-fold elevation in plasma 1,25 (OH)2D3 levels, while no such elevation in plasma 1,25-(OH)2D3 levels was observed in similarly treated animals replaced with PRL, ACTH, TSH, or T3. Replacement of hypox rats eating a normal diet with GH resulted in no significant change in plasma 1,25-(OH)2D3 levels. These results suggest that GH is required for maintenance of elevated plasma 1,25-(OH)2D3 levels during dietary phosphate deprivation and that this effect is mediated by increased renal 1,25-(OH)2D3 synthesis. PMID- 3838076 TI - Immunogenetics of Hashimoto's and Graves' diseases. AB - Haplotypes of the human major histocompatibility complex (HLA) and the immunoglobulin allotype (Gm) were analyzed in all 243 members of 37 families in which 2 or more first degree relatives had Graves' disease. In 10 families with 70 members where 1 or more first degree relatives had Hashimoto's disease, 26 (37%) had Graves' disease, and 14 (20%) had Hashimoto's disease. In the other 27 families, consisting of 173 members, 70 (40%) had Graves' disease, and none had Hashimoto's disease. The disease-associated haplotypes of HLA and Gm for each family were identified by determining the haplotypes concordant in 2 members with Graves' disease. In 10 families with Graves' and Hashimoto's diseases, all 14 members with Hashimoto's disease had the same disease-associated haplotypes of both HLA and Gm as had members with Graves' disease in each family. Among 96 members with Graves' disease in 37 families, 74 were used for the determination of the disease-associated haplotypes. In the remaining 22 members with Graves' disease, 21 had both disease-associated haplotypes in their families. Our findings in these families suggest that 1) in Hashimoto's disease as in Graves' disease, two genes linked to HLA and Gm, respectively, control the susceptibility of the disease; 2) common immunogenetic factors are involved in the pathogenesis of both Hashimoto's and Graves' disease, and 3) those who do not have immunogenetic factors are very unlikely to develop Hashimoto's or Graves' disease. PMID- 3838077 TI - GABA-mimetic activity and effects on diazepam binding of aminosulphonic acids structurally related to piperidine-4-sulphonic acid. AB - The relationship between structure, in vivo activity, and in vitro activity of some analogues of the gamma-aminobutyric acid (GABA) agonist piperidine-4 sulphonic acid (P4S) was studied. The syntheses of 1,2,3,6-tetrahydropyridine-4 sulphonic acid (DH-P4S) and (RS)-pyrrolidin-3-yl-methanesulphonamide (PMSA-amide) are described. Like P4S, its unsaturated analogue DH-P4S and the five-ring isomer (RS)-pyrrolidin-3-yl-methanesulphonic acid (PMSA) were bicuculline methochloride (BMC)-sensitive inhibitors of the firing of neurones in the cat spinal cord. Whereas isonipecotic acid was less potent than its unsaturated analogue isoguvacine as a GABA-mimetic and as an inhibitor of GABA binding, the opposite relative potencies of P4S and DH-P4S were observed, P4S being proportionally more potent than DH-P4S. In contrast with P4S and DH-P4S, PMSA, which is an analogue of the potent GABA uptake inhibitor and BMC-sensitive GABA-mimetic homo-beta proline, was a relatively weak inhibitor of GABA uptake in vitro. PMSA-amide was more than two orders of magnitude weaker than PMSA as an inhibitor of GABA binding and did not significantly affect GABA uptake in vitro. The effects of 3 aminopropanesulphonic acid (3-APS), PMSA, P4S, and DH-P4S on the binding of [3H]diazepam in vitro at 30 degrees C, in the presence or absence of chloride ions, were studied and compared with those of the structurally related amino acids GABA, homo-beta-proline, isonipecotic acid, and isoguvacine. Under these conditions the aminosulphonic acids were weaker than the respective amino acids in enhancing [3H]diazepam binding, the difference being more pronounced in the absence of chloride. PMID- 3838078 TI - Radiotherapy of stage I and II Hodgkin disease with inguinal presentation. AB - Seventeen patients who presented with inguinal adenopathy were found to have stage I or II infradiaphragmatic Hodgkin disease. Sixteen were treated with an inverted-Y field (supplemented by mantle irradiation in 3) and 1 had irradiation of the involved field only. Two patients with stage IIB disease also received MOPP chemotherapy. Fifteen patients currently have no evidence of recurrence; one died of acute myelogenous leukemia 6 years after total nodal irradiation, while another died of cardiopulmonary disease but had no evidence of Hodgkin disease at autopsy. In one patient, progressive peripheral atherosclerosis developed in an irradiated inguinal area, requiring angioplasty. Patient characteristics and results of treatment are analyzed and implications for management presented. PMID- 3838079 TI - Abrupt induction of a membrane digestive enzyme by its intraintestinal substrate. AB - The regulation of amino-oligopeptidase (AOP), an intestinal brush border hydrolase essential for the surface digestion of peptide nutrients, was examined in rats in vivo. Short-term (30-minute) intraintestinal perfusion of a tetrapeptide substrate, Gly-Leu-Gly-Gly, or a synthetic substrate, leucyl-beta naphthylamide, induced a doubling in the incorporation of [3H]leucine into the AOP in association with intracellular membranes. The subsequent conversion of AOP from nascent to mature enzyme and its membrane-associated transport to the brush border occurred at normal rates. PMID- 3838080 TI - Loss of suppression of normal bone marrow colony formation by leukemic cell lines after differentiation is induced by chemical agents. AB - The human leukemic cell lines K562 and HL-60 were cocultured with normal bone marrow (BM) cells. Coculture with 10(4) K562 or HL-60 cells results in 50% inhibition of normal CFU-E and BFU-E colony formation. However, when the same number of K562 and HL-60 cells is first treated for two to five days with agents that induce their differentiation, a gradual loss in their capacity to inhibit CFU-E and BFU-E colony formation is observed. The inhibitory material in K562 cells is soluble and present in conditioned medium from cultures of these cells. The degree to which leukemic cell suppression of CFU-E and BFU-E growth is reversed is correlated with the time of exposure to the inducing agent. Suppression is no longer evident after five days of prior treatment with inducers. In fact, up to a 90% stimulation of CFU-E growth is observed in cocultures with K562 cells that have been pretreated with 30 to 70 mumol/L hemin for five days. K562 cells treated with concentrations of hemin as low as 30 mumol/L demonstrate increased hemoglobin synthesis and grow normally, but no longer have an inhibitory effect on CFU-E growth. Hence, reversal of normal BM growth inhibition must be caused by the more differentiated state of the K562 cells and not by a decrease in the number of these cells with treatment. Thus, induction of differentiation in cultured leukemic cells not only alters the malignant cell phenotype but also permits improved growth of accompanying normal marrow progenitor cells. Both are desired effects of chemotherapy. PMID- 3838081 TI - Neonatal purpura fulminans: a genetic disorder related to the absence of protein C in blood. AB - To confirm the pathogenesis and the genetic background of neonatal-onset purpura fulminans, two unrelated infants with this rare thrombotic syndrome and 47 of their asymptomatic relatives were studied. In both families, 27 subjects with hereditary partial deficiency of protein C, including both parents of each patient, were identified. The patient in whom it was possible to evaluate protein C directly showed no detectable levels of this plasma component. These findings confirm the linkage of neonatal purpura fulminans to a genetic trait with established mendelian transmission and strongly suggest that the syndrome is an expression of homozygosity for protein C deficiency. The dramatic clinical picture and the type of pathologic change that develops as a result of the lack of circulating protein C emphasize the vital role of this protein in protection from thrombin generation, mainly within the microvascular system. However, our data do not contribute to the evidence that partial familial protein C deficiency is associated with a major risk of venous thromboembolism. PMID- 3838082 TI - Cystic degeneration of thymic Hodgkin's disease following radiation therapy. AB - A case of thymic Hodgkin's disease presenting with an anterior mediastinal mass is reported. The mass progressively expanded in size on plain chest radiography during and following a mantle radiation therapy. A repeat computed tomographic (CT) scan of the chest in this patient revealed a cystic component to the mass, and thin-needle aspiration of the cyst led to a shrinkage of the mass. An experience in this case and review of literature suggest Hodgkin's disease involving the thymus gland frequently predisposes to cystic degeneration especially following radiotherapy, leaving a stable or progressively enlarging residual mass. A precise diagnosis of such a progressively expanding mass despite the adequate radiation therapy is crucial. CT scan of the chest in such cases and a thin-needle aspiration of the cystic mass offer precise diagnosis and may obviate the need for an open thoracotomy procedure. PMID- 3838083 TI - Clinical significance of heat labile Regan isoenzyme variant in Hodgkin's disease. AB - The activity of a heat labile variant of Regan type alkaline phosphatase (HLRI) was studied in the serum of 38 histologically proved patients with Hodgkin's disease. The activity was also studied in 40 normal healthy adults matched for age and sex as control. HLRI was significantly elevated in patients with Hodgkin's disease in comparison with normal controls (1.12 +/- 0.12 units/ml vs 0.09 +/- 0.01 units/ml; P less than 0.001). The mean values of the isoenzyme tended to increase progressively with increasing stages of disease, reflecting a significant linear trend (P less than 0.001). The serial measurement of this variant may serve as a useful parameter in assessing disease activity and response to chemotherapy. PMID- 3838084 TI - Activation of alveolar macrophage tumoricidal activity and eradication of experimental metastases by freeze-dried liposomes containing a new lipophilic muramyl dipeptide derivative. AB - The ability of a member of a new class of lipophilic muramyl dipeptide (MDP) derivative, muramyl dipeptide-glyceryldipalmitate (MDP-GDP), to induce alveolar macrophage cytotoxic activity in vitro towards B16 melanoma cells when incorporated into two types of liposome was studied. MDP-GDP incorporated into conventionally prepared liposomes formulated from distearoylphosphatidylcholine and phosphatidylserine (7:3 molar ratio) was 10-fold more effective than liposomes containing MDP, and 7000-fold more effective than free MDP in inducing macrophage cytotoxic activity. MDP-GDP incorporated into freeze-dried liposomes was 50,000- to 100,000-fold more effective than free MDP in inducing such activity. Freeze-dried liposomes containing MDP-GDP were efficiently localized in the lungs of normal mice, and induced cytotoxic activity in the alveolar macrophages. Such liposomes were able to significantly reduce the pulmonary metastatic burden of mice carrying the B16 melanoma. These data provide evidence that this class of lipophilic MDP derivative, when incorporated into freeze-dried liposomes, is a potent inducer of macrophage cytotoxic activity in vitro and in situ, and has antitumor activity in vivo. In addition, the use of a freeze-drying procedure allows the preparation and long-term storage of reproducible liposome formulations. PMID- 3838085 TI - Growth inhibition and increase of insulin receptors in antiestrogen-resistant T47DCO human breast cancer cells by progestins: implications for endocrine therapies. AB - There is renewed interest in the use of progestins to treat advanced breast cancer because results with these agents are comparable to those obtained with antiestrogens. However, it is not known whether progestins inhibit the growth of breast tumor cells directly and independently of estradiol. To study this, we have used T47DCO human breast cancer cells. The progesterone receptors in these cells do not require estrogen induction, and this permits study of pure progestin effects without interference by estradiol. We report here that, in the absence of estradiol, physiological concentrations of progestins directly inhibit proliferation of these cells. At the same time, progestins increase the levels of the receptors for insulin, a common cell mitogen. Ten days of treatment with 1 or 10 nM of the synthetic progestin R5020 suppresses cell growth approximately 50 to 60%. This is consistent with the concentrations that either partially (approximately 10%) or more extensively (greater than 60%) translocate cytoplasmic progesterone receptors. Even a brief 1-hr pulse of R5020 has long term growth-inhibitory effects. Progesterone is also antiproliferative, but its effects are attenuated because, unlike R5020, it is rapidly metabolized in the medium. Other synthetic progestins also inhibit cell growth, but unrelated steroids (estradiol, androgens, glucocorticoids, 1,25-dihydroxyvitamin D3) are ineffective. While growth is suppressed by R5020, insulin receptors increase rapidly and then fall to a new, elevated steady state as the cells slowly begin to proliferate. Only progestins have this effect on insulin receptors. We conclude that the hormonal regulation of breast tumor cell growth is complex and includes progestins among the regulating factors. Furthermore, since T47Dco cells are antiestrogen-resistant and estrogen receptor-negative, the antiproliferative effects of progestins must be mediated through mechanisms that differ from the cytotoxic effects of antiestrogens. We propose that, clinically, antiestrogens and progestins may have complementary uses in breast cancer treatment, and we outline two therapeutic strategies. PMID- 3838086 TI - Radioimmunoassay for 1,25-dihydroxyvitamin D in serum or plasma. AB - For this sensitive RIA for 1 alpha,25-dihydroxyvitamin D, we used antibodies to 1 alpha,25-dihydroxycholecalciferol-3-hemisuccinate conjugated to bovine serum albumin, raised in rabbits. These antibodies show a high affinity for 1 alpha,25 dihydroxyvitamin D3 but cross react with other vitamin D metabolites as well. Extraction and liquid chromatography are required to isolate the 1 alpha,25 dihydroxyvitamin D from human serum or plasma with benzene (analytical recovery, 96%) and chromatographed by "high-performance" liquid chromatography on a silica column. The sensitivity of the assay is 2 pg/tube. The between-assay CV is 12.6% (means = 61.8 ng/L, n = 27) and the within-assay CV is 7.4% (means = 61.8 ng/L, n = 15). The reference interval, obtained from data on serum of healthy persons, is 51.8 +/- 15.1 ng/L (means +/- SD, n = 91), with no sex-related difference. Patients with chronic renal failure have lower concentrations in serum, and patients suffering from calcium nephrolithiasis have increased concentrations. Our assay offers the advantage of a relatively short prepurification procedure and the production of large amounts of stable gamma-globulins that can be used for several years without loss of binding properties. PMID- 3838087 TI - Computer program for quality control, especially suited for the small laboratory. PMID- 3838088 TI - Surfactant phospholipids need not be extracted from amniotic fluid. PMID- 3838090 TI - Isolation and characterization of neuropeptide Y from porcine intestine. AB - The isolation and primary structure of intestinal neuropeptide Y (NPY) is described. The peptide was purified from porcine intestinal extracts using a chemical assay and radioimmunoassay for NPY. The amino acid sequence of this peptide is: Tyr-Pro-Ser-Lys-Pro-Asp-Asn-Pro-Gly-Glu-Asp-Ala-Pro-Ala-Glu-Asp-Leu Ala- Arg-Tyr-Tyr- Ser-Ala-Leu-Arg-His-Tyr-Ile-Asn-Leu-Ile-Thr-Arg-Gln-Arg-Tyr NH2. This the structure of intestinal NPY is identical to the NPY of brain origin. PMID- 3838089 TI - Comparison of intraluminal and intravenous mediators of colonic response to eating. AB - Eating a 1000-kcal mixed meal stimulates an increase in distal colonic motility. Fat is the dietary component which is the major stimulant of colonic spike activity. In this study the colonic spike activity increased similarly after the mixed meal [19.1 +/- 2.4 spike potentials (SP)/30 min] and after the fat meal (19.4 +/- 5.4 SP/30 min). Fat stimulated a concentration-dependent increase in colonic motility only when in contact with the gastroduodenal mucosa. Intravenous administration of Liposyn (100 kcal/hr) did not stimulate an increase in colonic spike activity (3.3 +/- 1.3 SP/30 min) despite greater increase in plasma total fatty acid levels than after the oral ingestion of fat. In contrast both the oral ingestion and the intravenous administration of an amino acid mixture (Aminosyn) inhibited the gastrocolonic response after the 1000-kcal mixed meal. Thus, these studies demonstrate: (1) fat stimulates colonic motility only through direct mucosal contact, and (2) a mixture of amino acid inhibits colonic motility through either mucosal contact or by circulating in the plasma. The exact neurohumoral mechanisms involved in both of these effects is unknown at present. PMID- 3838091 TI - Treatment of cervical ectropion by cryosurgery: effect on cervical mucus characteristics. AB - Eighteen women with cervical ectropion and 12 women with ectropion and vaginal discharge were treated by cryosurgery. Evaluation of the cervical mucus characteristics by cervical score and in vitro penetration test was performed before treatment and 2 months later. In the group with ectropion only (group A) the total cervical score was 5.7 +/- 0.4 and 11.9 +/- 0.06 (P less than 0.001) (mean +/- standard error) before treatment and 2 months later, respectively. In the group with ectropion and vaginal discharge (group B) the total cervical score before and after cryosurgery was 3.8 +/- 0.4 and 11.8 +/- 0.1 (P less than 0.001), respectively. In vitro penetration tests in group A before and after treatment were 0.72 +/- 0.1 and 2.9 +/- 0.08 (P less than 0.001), respectively. In group B, in vitro penetration tests before and after cryosurgery were 0.25 +/- 0.1 and 2.8 +/- 0.1 (P less than 0.001), respectively. It appears that cryosurgery improves the cervical mucus characteristics. It is recommended that infertile patients with hostile cervical mucus and ectropion will be treated by cryosurgery. PMID- 3838092 TI - Interaction of Salmonella telaviv with Maclura pomifera lectin. AB - Salmonella telaviv, Salmonella tranoroa, and Salmonella illinois were examined for their ability to interact with 15 purified lectins of known sugar specificity. The only interaction observed was between the lectin of Maclura pomifera and S. telaviv. M. pomifera lectin specifically agglutinated suspensions of S. telaviv and precipitated with its purified lipopolysaccharide and isolated lipid A free O polysaccharide. Quantitative inhibition assays showing methyl alpha-D-galactopyranoside and N-acetyl-D-galactosamine to be potent inhibitors of Maclura lectin precipitation by S. telaviv O polysaccharide suggest that the interaction is mediated by D-galactose or N-acetyl-D-galactosamine units of bacterial polysaccharide structure, or both. PMID- 3838093 TI - Interaction between citrate synthase and thiolase. AB - Thiolase, a mitochondrial matrix enzyme which produces CoASAc from fatty acids, is shown to interact with citrate synthase, the mitochondrial matrix enzyme responsible for CoASAc utilization. The interaction is demonstrated in three ways: the two enzymes co-precipitate in polyethylene glycol; thiolase causes a change in the fluorescence anisotropy of labeled citrate synthase; and the two enzymes co-elute in gel permeation chromatography. The interactions are shown to be specific by the use of enzymes not metabolically related to citrate synthase. PMID- 3838094 TI - Biosynthesis and in vitro translation of the major surfactant-associated protein from human lung. AB - We have characterized a 32,000-36,000-dalton sialoglycoprotein group that is an integral component of the lipoprotein complex called pulmonary surfactant. Our results from the cell-free translation of human lung RNA show that this protein consists of two similarly-sized precursor components of about 29,000-31,000 daltons. Tunicamycin treatment of the lung tissue prevents formation of the normal protein and results in the accumulation of these precursor components which are also seen under normal conditions in very small amounts. Although in vitro translation in the presence of dog pancreatic microsomes suggests that a cleavable signal peptide sequence is present in these precursor molecules, it does not appear that this cleavage occurs in vivo. PMID- 3838095 TI - Structure of C protein purified from cardiac muscle. AB - C protein is a component of the thick filament of striated muscles. Although the function of C protein remains unknown, a variety of evidence suggests that C protein may regulate actin-myosin interaction or be involved in structural support or elasticity of the sarcomere. We have previously proposed (Hartzell, H. C., 1984, J. Gen. Physiol., 83:563-588) that C protein is involved in regulating twitch relaxation in cardiac muscle. To gain further insight into the function of C protein, we have studied the structure of C protein purified from chicken heart. C protein was purified from extracts of detergent-washed myofibrils by sequential hydroxylapatite and DEAE-Sephacel chromatography. C protein was judged greater than 95% pure by SDS PAGE. The polypeptide subunit had a molecular weight of 155,000 and the native molecule sedimented on linear sucrose or glycerol gradients at 4-5S. For electron microscopy, purified C protein was dialyzed and diluted into a volatile buffer in 50% glycerol, aspirated onto mica, dried under vacuum, and rotary platinum-shadowed. Replicas revealed particles of relatively homogeneous overall dimensions. Over half of the particles were V-shaped. The "arm" lengths of the V-shaped particles were 22 +/- 4.5 nm (SD). Gel filtration on Sephacryl S-300 demonstrated that purified C protein had a Stokes' radius of 5.07 nm. Measurements of viscosity gave an intrinsic viscosity of 16.5 cm3/g. These data are consistent with the electron microscopic data and suggest that C protein in heart muscle is asymmetric. The C protein molecule is large enough to extend from the surface of a thick filament to adjacent thin or thick filaments. PMID- 3838097 TI - A computer program for international travel advice. PMID- 3838096 TI - Antineutrophil autoantibodies in Graves' disease. Implications of thyrotropin binding to neutrophils. AB - The hyperthyroidism of Graves' disease may be caused by autoantibodies to thyrotropin (TSH) receptors. We have found that patients with this disease have autoantibodies to neutrophils as well, which can be displaced by TSH. Using a radiochemical opsonic assay, we found serum antibodies against homologous neutrophils in 6 of 11 Graves' patients. With a staphylococcal protein A-binding assay, we detected circulating antibodies to homologous neutrophils in 10 of 20 patients, while finding cell-bound antibody on autologous neutrophils in 7 of 8 (including 2 with negative serum tests). Use of human 125I-TSH in a radioligand binding assay revealed that TSH bound to neutrophils rapidly (maximum binding within 10 min at 22 degrees C, pH 7.4), specifically (less than 20% nonspecific binding), and reversibly. Adding TSH to the radiochemical assay resulted in a dose-dependent inhibition of opsonic antibody activity in serum from patients with Graves' disease. In contrast, TSH did not inhibit antibody activity of serum from patients with immune neutropenia not associated with thyroid disease. Our findings suggest a basis for the association of Graves' disease with neutropenia. Furthermore, the discovery of such antineutrophil antibodies in Graves' disease permits detection of cell-bound antibody when free antibody is not present. PMID- 3838098 TI - AF64A: an active site directed irreversible inhibitor of choline acetyltransferase. AB - Ethylcholine mustard aziridinium ion (AF64A, MEChMAz) has been proposed as a cholinergic neuron-specific neurotoxin. We report that in further studies on its mechanism of action incubation of the cholinergic neuroblastoma X glioma cell line, NG-108-15, with 100 microM AF64A resulted in a rapid decrease in cellular choline acetyltransferase (ChAT) activity which preceded cytotoxicity. Thus, a 60 85% decrease in ChAT activity was measured within 5 h of AF64A exposure, whereas cell lysis (measured as the release of the cytosolic enzyme lactate dehydrogenase into the medium) did not become apparent until 18 h of AF64A exposure. This led us to examine the effects of AF64A on partially purified ChAT. We report a concentration- and time-dependent inhibition of partially purified ChAT by AF64A that could not be reversed by dialysis but could be prevented by coincubation of the enzyme and AF64A with choline but not with acetyl-coenzyme A. We present kinetic evidence that choline and AF64A compete for the same site on the enzyme. In addition, thiosulfate, which inactivates the aziridinium ion, eliminated AF64A's capacity to inhibit the enzyme. AF64A also irreversibly inhibited partially purified choline kinase and acetylcholinesterase but not lactate dehydrogenase, alcohol dehydrogenase, carboxypeptidase A, or chymotrypsinogen, enzymes that do not use choline as a substrate or product. Thus, the data suggest that AF64A acts as an irreversible active site directed inhibitor of ChAT and possibly other enzymes recognizing choline. PMID- 3838099 TI - Identification of hypoxanthine transport and xanthine oxidase activity in brain capillaries. AB - Microvessel segments were isolated from rat brain and used for studies of hypoxanthine transport and metabolism. Compared to an homogenate of cerebral cortex, the isolated microvessels were 3.7-fold enriched in xanthine oxidase. Incubation of the isolated microvessels with labeled hypoxanthine resulted in its rapid uptake followed by the slower accumulation of hypoxanthine metabolites including xanthine and uric acid. The intracellular accumulation of these metabolites was inhibited by the xanthine oxidase inhibitor allopurinol. Hypoxanthine transport into isolated capillaries was inhibited by adenine but not by representative pyrimidines or nucleosides. Similar results were obtained when blood to brain transport of hypoxanthine in vivo was measured using the intracarotid bolus injection technique. Thus, hypoxanthine is transported into brain capillaries by a transport system shared with adenine. Once inside the cell, hypoxanthine can be metabolized to xanthine and uric acid by xanthine oxidase. Since this reaction leads to the release of oxygen radicals, it is suggested that brain capillaries may be susceptible to free radical mediated damage. This would be most likely to occur in conditions where the brain hypoxanthine concentration is increased as following ischemia. PMID- 3838100 TI - Delta-sleep-inducing peptide and two of its analogs reduce nocturnal increase of N-acetyltransferase activity in rat pineal gland. AB - Serotonin N-acetyltransferase, an enzyme of the pineal gland, converts serotonin to N-acetylserotonin. The activity of this enzyme is induced by norepinephrine in the evening to reach high levels during the dark phase. Delta-sleep-inducing peptide, a humoral sleep factor, also seems to affect circadian rhythms. Intravenous injection of this peptide or either of two of its analogs in the evening significantly reduced the increase of N-acetyltransferase 4 h later. The dose-response relationship of the peptides showed an inverted U-shaped pattern with the active dose about 30 nmol/kg. The effect appears to be dependent on the time of day of administration, as injections in the morning did not change the enzymatic activity. These findings indicate that delta-sleep-inducing peptide (and two of its analogs) can affect enzymatic activities and that these influences probably vary throughout a time period of 24 h. PMID- 3838101 TI - Combination amsacrine and high-dose cytosine arabinoside in acute leukemia. PMID- 3838102 TI - Lung surfactant phospholipids as related to hydration and choline status of fasted rats. AB - Hydration status and choline nutrition were evaluated relative to the concentration of lung surfactant phosphatidylcholine (PC) in fasted rats. Rats deprived of food for 72 h showed lower voluntary water consumption and consistently lower levels of both PC and total phospholipid (TPL) present in isolated pulmonary surfactant than ad libitum-fed controls, although the ratio of surfactant PC to TPL and the residual PC and TPL concentrations were not different. Higher hematocrit values observed in the fasted animals were not altered by the administration of water or saline by orogastric tube nor was the low surfactant PC level corrected by fluid therapy. Evidence of choline deficiency was demonstrated in the fasted rats as there was a significant shift in hepatic PC:phosphatidylethanolamine; however, plasma choline levels did not change. The administration to fasted animals of up to 2.4 mmol of choline chloride via the drinking water (containing 60 mM choline) or an orogastric tube did not affect the plasma choline concentrations or the production of lung surfactant PC. PMID- 3838103 TI - Pulmonary lavage as a source of human surfactant. PMID- 3838104 TI - Evaluation of a novel antihypertensive agent, LY127210, in anesthetized and conscious spontaneously hypertensive rats. AB - LY127210 (7,8-dimethoxy-1H-3-benzazepin-2-amine, hydrochloride) is a novel peripheral arterial vasodilator that reduces mean arterial blood pressure in anesthetized and conscious spontaneously hypertensive rats by all conventional routes of administration. The antihypertensive activity of LY127210 results predominantly from a decrease in total peripheral vascular resistance, and the degree of reflex tachycardia produced by LY127210 in conscious spontaneously hypertensive rats is significantly less than that produced by hydralazine at equivalent antihypertensive doses. The relative lack of reflex tachycardia produced by LY127210 appears to result from a direct bradycardic effect of the compound that occurs at the level of the myocardium at doses similar to those required to produce peripheral arteriolar vasodilation. It is proposed that the direct bradycardic effect of LY127210 serves to offset, at least in part, the tachycardia resulting from reflex stimulation of sympathetic outflow that occurs upon activation of the baroreflex loop as blood pressure is lowered. The results indicate that LY127210 may provide adequate control of blood pressure and may not require the concomitant administration of a beta-adrenoceptor antagonist to control reflex tachycardia, as is commonly necessary with hydralazine. PMID- 3838105 TI - Structural features of 4-amino antifolates required for substrate activity with mammalian folylpolyglutamate synthetase. AB - The activity of a series of folic acid analogues as substrates for partially purified mouse liver folylpolyglutamate synthetase was determined and the effects of substituents on the binding to, and catalytic processes of, this enzyme were inferred. A 4-amino group improved substrate activity primarily by decreasing the apparent Km while N10-methyl substitution substantially diminished utilization as a substrate, again, by effects on Km. Isosteric replacement of N-10 altered substrate activity. A free alpha-carboxyl group in the amino acid side chain was required for catalysis as was the presence of the side chain amide carbonyl group. Modification of the amino acid side chain length profoundly affected activity. Several observations were made that may be relevant to chemotherapy with folate antimetabolites: 1) 7-hydroxymethotrexate was a substrate for this enzyme; 2) substrate activity and substrate inhibition were observed with CB 3717, a potent inhibitor of thymidylate synthase; 3) potent classical dihydrofolate reductase inhibitors were identified that were either not substrates for mouse liver folylpolyglutamate synthetase (e.g., 4-amino-4-deoxy N10-methylpteroyl-L-alpha-aminoadipate) or were much better substrates than methotrexate for this enzyme (e.g., aminopterin); and 4) leucovorin and methotrexate appeared to be substrates for the same synthetase, but leucovorin saturated the reaction at much lower concentrations. These results have implications for the design of folylpolyglutamate synthetase inhibitors and for the selection of dihydrofolate reductase inhibitors that are either not polyglutamated or are efficiently polyglutamated in vivo. PMID- 3838106 TI - Use of artificial intelligence in structure-activity correlations of anticonvulsant drugs. AB - The Computer-Automated Structure Evaluation Program, a new expert system capable of automatically developing relevant descriptors for structure-activity relationships, has been used to analyze experimental anticonvulsant activity data of a series of 1,3-dihydro-2H-1,4-benzodiazepine-2-one derivatives. Some significant correlations are observed between the activity of 99 benzodiazepines against pentylenetetrazole and some relevant molecular fragments identified by the program. The utility of the observed relationships and the predictive power of the method are discussed. PMID- 3838107 TI - Synthesis of brome mosaic virus subgenomic RNA in vitro by internal initiation on (-)-sense genomic RNA. AB - The genomes of many (+)-stranded RNA viruses, including plant viruses and alphaviruses, consist of polycistronic RNAs whose internal genes are expressed via subgenomic messenger RNAs. The mechanism(s) by which these subgenomic mRNAs arise are poorly understood. Based on indirect evidence, three models have been proposed: (1) internal initiation by the replicase on the (-)-strand of genomic RNA, (2) premature termination during (-)-strand synthesis, followed by independent replication of the subgenomic RNA and (3) processing by nuclease cleavage of genome-length RNA. Using an RNA-dependent RNA polymerase (replicase) preparation from barley leaves infected with brome mosaic virus (BMV) to synthesize the viral subgenomic RNA in vitro, we now provide evidence that subgenomic RNA arises by internal initiation on the (-)-strand of genomic RNA. We believe that this also represents the first in vitro demonstration of a replicase from a eukaryotic (+)-stranded RNA virus capable of initiating synthesis of (+) sense RNA. PMID- 3838108 TI - Reversible association of myosin with the platelet cytoskeleton. AB - Platelets circulating in the human blood stream are smooth disk-shaped structures. The disks change within seconds of exposure to ADP or thrombin to irregular spheres bearing filopodia and pseudopodia. It is well-established that platelets also change shape (although more slowly) when chilled to 5 degrees C and revert to disks on rewarming. This cold-induced shape change may be due to the depolymerization of the submembranous microtubule ring. However, we found that chilling in the presence of Taxol, which stabilizes the microtubules, still results in shape change. Chilled platelets show an increase in the amount of myosin in the Triton-X insoluble residue or 'cytoskeleton' which is correlated in time both with phosphorylation of the myosin regulatory light chain and with the induced shape change. We suggest here that the slow cold-induced change from disks to spheres is due primarily to a gradual activation of myosin. PMID- 3838109 TI - Prostacyclin biosynthesis and platelet function in autonomic dysfunction. AB - We measured urinary excretion of the principal metabolite of prostacyclin, PGI-M (2,3-dinor-6-keto-PGF1 alpha) in two patients with Shy-Drager syndrome and three with idiopathic orthostatic hypotension. All patients had a rise in blood pressure (30 +/- 6 mm Hg) after ingestion of 50 mg indomethacin. Urinary excretion of PGI-M was normal and fell 57 +/- 11% after administration of indomethacin. In two subjects, there was no evidence of any circulating inhibitor of platelet aggregation when hypotension was induced by upright posture or ingestion of a meal. Despite the efficacy of indomethacin, these patients with autonomic dysfunction did not show increased production of the vasodilator prostanoid prostacyclin. PMID- 3838110 TI - Effects of dihydralazine infusion on the fetoplacental blood flow and maternal prostanoids. AB - The hemodynamic effects of intravenously infused dihydralazine (incremental doses up to 125 micrograms per minute during 60 minutes) were studied in ten women with acute or superimposed severe preeclampsia. The intervillous and umbilical vein blood flow were measured before and during dihydralazine infusion with 133Xenon method and with a combination of real-time and Doppler ultrasonic equipment, respectively. Maternal blood pressure decreased and pulse rate increased during the infusion. Dihydralazine did not change the intervillous blood flow but it increased the blood flow in umbilical vein. No effect on the 6-ketoprostaglandin F1 alpha in maternal plasma and urine or thromboxane B2 in maternal serum was observed. The results indicate that dihydralazine affects the placental and fetal circulations differently. PMID- 3838112 TI - In vitro penetration of human sperm into bovine cervical mucus: effects of sperm washing and exposure to low temperature. AB - Standardized bovine cervical mucus penetration by human sperm in vitro provides information for evaluating male fertility. Normal semen specimens from 20 sperm donors and 17 infertile men were tested for cervical mucus penetration. Rigorous control of test temperature was necessary to guarantee the reliability and reproducibility of cervical mucus penetration. Sperm washing was found to significantly improve cervical mucus penetration for infertile men, from 18 +/- 2.2 to 27 +/- 3.4 mm, P less than .025. Sperm washing for normal donors had no apparent effect on cervical mucus penetration (58 +/- 1.5 mm prewash, 55 +/- 1.7 mm postwash, P greater than .1). The authors conclude that: 1) temperature for cervical mucus penetration testing is critical to reliability, and 2) cervical mucus penetration is a useful screening tool for in vitro procedures proposed to improve sperm function. PMID- 3838111 TI - Survival and short-term morbidity of the premature neonate. AB - Obstetric decisions regarding premature (23 to 32 weeks' gestation) infants must be based on gestational age. However, most reports of the survival of premature infants are based on birth weight. The present report relates the perinatal survival and morbidity of 105 newborns to the obstetric gestational dating criteria between 23 and 32 weeks' gestation. Gestational age was determined from at least four obstetric criteria including the first day of the last menstrual period, early pelvic examination, the earliest auscultation of fetal heart tones with a fetoscope, fundal height measurements in centimeters between 20 and 30 weeks' gestation, and sonographic gestational age measurements. At 23 to 26 weeks' gestational age, nine (39%) of 23 neonates survived. Five of nine survivors had moderate to severe intracranial hemorrhage, three had moderate to severe bronchopulmonary dysplasia, and three had moderate to severe retrolental fibroplasia. At 27 to 29 weeks' gestational age, 25 (93%) of 27 neonates survived. Of the 25 survivors, three had moderate to severe intracranial hemorrhage, one had moderate to severe bronchopulmonary dysplasia, and one had severe retrolental fibroplasia. At 30 to 32 weeks' gestational age, 52 (95%) of 55 neonates survived. Three of the 52 (6%) survivors had serious neonatal morbidity consisting of moderate to severe intracranial hemorrhage (three neonates) and moderate to severe bronchopulmonary dysplasia (one neonate). Thus, ten of 34 (29%) survivors between gestational ages of 24 to 29 weeks had a serious morbidity versus only three of 52 (6%) survivors between 30 to 32 weeks' gestation (P less than .01). PMID- 3838113 TI - Pulmonary vascular response to oxygen in infants with severe bronchopulmonary dysplasia. AB - The cardiac catheterization data of six infants with bronchopulmonary dysplasia (BPD) were reviewed to examine the responsiveness of their pulmonary vascular beds to changes in oxygen tension. The infants were studied because of slow recovery from their oxygen requirements and clinical evidence of persistent pulmonary hypertension. All were receiving home oxygen therapy and had abnormal chest radiographs and right ventricular hypertrophy by ECG at the time of catheterization (mean age, 25 months). All infants had mean pulmonary artery pressure greater than 25 mm Hg in room air, with a mean of 48 mm Hg. All decreased mean pulmonary artery pressure by at least 10 mm Hg when placed in high levels of inspired oxygen (FiO2 greater than 80), with a mean pulmonary artery pressure of 25 mm Hg. This represented a significant decrease in mean pulmonary artery pressure from room air pressures (P less than .005). Mean pulmonary artery pressure was also measured in three infants who were breathing supplemental oxygen by nasal cannula at flow rates similar to levels used for outpatient therapy. Most of the reduction in mean pulmonary artery pressure that occurred at high FiO2 occurred at these lower flow rates of supplemental oxygen. It is concluded that infants with bronchopulmonary dysplasia who have pulmonary hypertension generally have reactive pulmonary vascular beds, responsive to supplemental oxygen. Continuous oxygen therapy by nasal cannula may be useful in the treatment of pulmonary hypertension associated with bronchopulmonary dysplasia. PMID- 3838114 TI - Current issues in feeding the normal infant. PMID- 3838115 TI - Hearing and balance disorders. How to recognize, when to refer. AB - Nearly one in ten Americans has some degree of hearing loss. The primary care physician is frequently the first to examine patients with hearing and balance disorders. Examination begins with a thorough history and examination and may also include specific tests performed in the office. In many cases, the primary care physician can diagnose and treat disorders successfully. In other cases, referral to a specialist is necessary. PMID- 3838116 TI - Aortopulmonary fistula in a post-coarctation mycotic aneurysm. AB - A 21-year-old man presented with fever and septicemia resistant to antibiotic therapy. An unusual post-coarctation mycotic aortic aneurysm that had eroded into the left main stem bronchus was identified and replaced with a Dacron graft. A critical factor in achieving the satisfactory result was preparation of the femoral vessels for autotransfusion and possible cardiopulmonary bypass. PMID- 3838117 TI - Metastatic tumors of the heart detected by two-dimensional echocardiography. PMID- 3838118 TI - Reversible right ventricular outflow tract compression by immunoblastic sarcoma. PMID- 3838119 TI - 6-Keto prostaglandin F1 alpha, thromboxane B2, and 13,14-dihydro-15-keto prostaglandin F concentrations of normotensive and preeclamptic patients during pregnancy, delivery, and the postpartum period. AB - Plasma 6-keto prostaglandin F1 alpha, 13,14-dihydro-15-keto prostaglandin F, and thromboxane B2 levels were measured in normotensive and preeclamptic patients during pregnancy and the postpartum period. From 30 to 40 weeks of gestation, 6 keto prostaglandin F1 alpha levels of preeclamptic patients were significantly lower than those of normotensive women; 13,14-dihydro-15-keto prostaglandin F and thromboxane B2 concentrations in preeclamptic patients did not significantly differ from those of the normotensive group. At delivery, 6-keto prostaglandin F1 alpha levels of maternal and umbilical venous plasma of preeclamptic women were also significantly lower than those of normotensive women. In the postpartum period these three prostanoids were not significantly different in normotensive women compared to preeclamptic women, with clinical preeclamptic symptoms soon disappearing in most of our patients. From the results, it seems that prostacyclin plays an important role in preeclampsia. PMID- 3838120 TI - A dose-response study of piloplex for duration of action. AB - The duration of reduction in intraocular pressure after single-dose administration of three concentrations of piloplex and the vehicle of the drug was evaluated in 12 patients with open-angle glaucoma in a randomized, double masked, crossover study. Piloplex lowered intraocular pressure in a dose-related fashion, with a duration of action of at least 14 hours. PMID- 3838121 TI - Peptide YY inhibits meal-stimulated pancreatic and gastric secretion. AB - Peptide YY was recently isolated from porcine intestine and shown to exhibit marked structural homology with pancreatic polypeptide, a potent inhibitor of pancreatic exocrine secretion. We have examined the effects of infused peptide YY on gastric and pancreatic secretion in four mongrel dogs with gastric and pancreatic fistulas. A 15% liver extract meal was instilled intragastrically, and normal saline or one of three doses of peptide YY (200, 400, and 800 pmol X kg-1 X h-1) was infused into a peripheral vein. All three doses of peptide YY significantly inhibited meal-stimulated pancreatic fluid and bicarbonate secretion, with the lowest dose inhibiting secretion by 44.5 +/- 3.5 and 53.6 +/- 8.5%, respectively. Pancreatic protein secretion and gastric acid secretion were significantly inhibited by the two highest doses. The 200, 400, and 800 pmol X kg 1 X h-1 doses of peptide YY were associated with increments in peripheral blood of 201 +/- 24, 357 +/- 50, and 971 +/- 139 pM, respectively. These values compared with mean increments of 86.3 +/- 8.5 pM after a meat meal and 403 +/- 63 pM after intestinally perfused oleic acid. The present studies demonstrate that peptide YY inhibits gastric and pancreatic secretion and suggest that peptide YY may be the gastric and pancreatic inhibitor in ileocolonic mucosa that is released by perfusion of the intestine with oleic acid. PMID- 3838122 TI - Early effects of vitamin D metabolites on phosphate fluxes in isolated rat enterocytes. AB - The present studies were designed to explore the possibility that, in addition to its well-known steroidlike action, 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], the active vitamin D3 metabolite, modulates inorganic phosphate (Pi) transport across the intestinal mucosa through more rapid membrane effects. Enterocytes were mechanically isolated from the duodenojejunum of vitamin D-replete rats. In this model enterocyte Pi uptake was a temperature-dependent as well as a Na+-dependent process. In vitro addition of 1,25(OH)2D3 (1 pM) led to a significant increase in Na+-dependent initial Pi uptake velocity (iVpi) within 20 min (P less than 0.001). No effect was seen for shorter incubation times (5 and 15 min). Incubation of the cells with cycloheximide did not inhibit the hormone-mediated increase of iVpi. 25-Hydroxyvitamin D3 significantly increased iVPi (P less than 0.05) at a concentration of 1 nM but not 1 pM. Vitamin D3 at a concentration of 1 microM had no effect on iVPi. Enterocyte Pi efflux rate constant was not modified by the presence of 1,25(OH)2D3(1pM). Thus, the early in vitro effect of 1,25(OH)2D3 on Pi uptake by isolated enterocytes suggests a nongenomic action of the hormone, possibly by modifying the lipid structure of the plasma membrane. PMID- 3838123 TI - Genital herpes: does knowledge lead to action? AB - We analyzed data from a national telephone survey to determine whether awareness of the herpes epidemic led to changes in sexual behavior. Of those surveyed, 67 per cent heard about herpes only within the last two years. More importantly, 45 per cent of individuals perceiving themselves to be at risk stated they had changed their behavior as a result of this perception. Among those never married, 60 per cent stated they were willing to modify their lives to avoid genital herpes. PMID- 3838125 TI - Computerized anesthesia record. PMID- 3838124 TI - Determination of atracurium in plasma by high-performance liquid chromatography. PMID- 3838126 TI - Neuromuscular effects of atracurium in infants and children. PMID- 3838127 TI - Concerning toxicity testing of atracurium. PMID- 3838128 TI - Thyroid scanning in patients with suspected thyroid disease. PMID- 3838129 TI - The action of 1 alpha,25-dihydroxyvitamin D3 on rat small intestine: changes in translatable mRNA species. AB - The time course of changes in translatable mRNA from small intestinal mucosa was studied in vitamin D-deficient rats following an intrajugular dose of 1,25 dihydroxyvitamin D3. L-[35S]Methionine-labeled translation products were analyzed by high-resolution one- and two-dimensional electrophoresis. Changes were detected in two distinct proteins, Mr 14,000/pI 6.24 (Band I), and Mr 5,200/pI 4.86 (Band II). These increased to maxima of 1-2% each of the total in vitro synthesized protein at 12 h after dosing. This represented a 3- and 10-fold increase, respectively, over control values. The time course of these changes suggests that regulation of the levels of the mRNAs coding for these proteins is not involved in the initial (6 h) peak of 1,25-dihydroxyvitamin D3-stimulated intestinal calcium transport in the rat. PMID- 3838130 TI - Interaction of carbohydrates with dry dipalmitoylphosphatidylcholine. AB - Interactions of six carbohydrates (trehalose, sucrose, glucose, raffinose, inositol, and glycerol) with dry dipalmitoylphosphatidylcholine (DPPC) were studied using differential scanning calorimetry (DSC) and infrared spectroscopy (ir) in order to elucidate the mechanism by which some of these carbohydrates preserve structural and functional integrity of dry membranes. Results with DSC showed that trehalose depressed the main transition temperature (Tmid) of dry DPPC below that of fully hydrated DPPC, and raised the enthalpy of that transition more than did addition of water. Results obtained with ir spectroscopy suggested a potential mechanism for this interaction. In the presence of most of the carbohydrates the ir spectrum for DPPC showed changes similar to those seen when water was added to dry DPPC, and the asymmetric P = O stretching band was diminished in intensity. The degree to which the carbohydrates tested affected the integrated intensity of this band and the Tmid was correlated with the ability of those carbohydrates to preserve dry membranes. Also, bands assigned to -OH deformations in the trehalose and other carbohydrates were depressed in the presence of DPPC. Based on these observations, it is suggested that the mechanism of interaction between the carbohydrate and lipid involves hydrogen bonding between -OH groups on the carbohydrate and the phosphate head group of the phospholipid. The only exceptions to this pattern are glycerol, which depresses Tmid of dry DPPC, and myo-inositol, which has no effect on Tmid or the ir spectrum of DPPC; neither carbohydrate can preserve dry membranes. It is suggested, based on ir spectroscopy and previous results with monolayer preparations, that glycerol interacts with phospholipids by a mechanism different from that shown by the other carbohydrates. PMID- 3838131 TI - Sequence of a cloned 523-bp cDNA for thymosin beta 4. AB - The sequence of a 523-bp cDNA, isolated from a clone bank prepared from partially purified rat spleen mRNA coding for thymosin beta 4, was described. The 3' sequence extended through the poly(A) segment and the 5' sequence included 36 bp preceding the translated sequence. The putative amino acid sequence coded by this segment possesses some of the features of a signal peptide. PMID- 3838132 TI - Modification of the active site of isocitrate lyase from watermelon cotyledons. AB - Isocitrate lyase (EC 4.1.3.1) from watermelon cotyledons was modified by diethylpyrocarbonate and by the affinity labels 3-bromopyruvate and itaconate epoxide. The reaction with diethylpyrocarbonate, carried out at 30 degrees C in sodium phosphate, pH 6.5, modified (per subunit) 5 histidines in the absence and 4 in the presence of substrate. The kinetics were nonsaturating with respect to diethylpyrocarbonate and the enzyme was protected against modification by substrate or both products together. Hydroxylamine (0.5 M) reversed both histidine modification and inactivation. The reaction with 3-bromopyruvate, carried out at 30 degrees C in 4-morpholinepropanesulfonic acid, pH 7.7, modified (per subunit) 1 sulfhydryl in the absence and 0 in the presence of substrate. The reaction showed saturation kinetics (KBrP = 1.4 X 10(-5)M) and Ds-isocitrate offers competitive protection (KI = 0.2-0.3 mM; Km = 0.25 mM). The reaction with itaconate epoxide, carried out at 30 degrees C in sodium phosphate, pH 7.0, was also saturating (KItEp = 16.4 mM) and the reversible inhibitor, itaconate (KI = 50 microM; Ki = 22.5 microM) as well as the product, succinate (KS = 10.4 mM; Ki = 4.5 mM) offer competitive protection. Hydroxylamine (1 M, pH 7.0) reversed inactivation of the enzyme, indicating modification of a carboxylate residue at the active site. In summary, three different amino acid residues have been modified in the active site domain of watermelon isocitrate lyase. PMID- 3838133 TI - Gut-liver interaction during accelerated gluconeogenesis. AB - The effect of dexamethasone sodium phosphate on visceral organ glucose metabolism was studied in order to gain further understanding of the altered glucose dynamics that occur following catabolic states. Glucose, glutamine, and alanine exchange across the gastrointestinal (GI) tract, liver, and kidneys was determined in 25 awake dogs that were catheterized on a long-term basis during a control period and after dexamethasone sodium phosphate treatment (0.44 mg/kg/day) for two (dexamethasone 2) and nine (dexamethasone 9) days. The GI tract consumed glucose in control dogs but switched to an organ of balance or slight release with dexamethasone. Simultaneously, gut glutamine consumption increased markedly, as did intestinal alanine release. Hepatic glucose production more than doubled with dexamethasone at a time when hepatic alanine uptake was greatly increased. The kidneys demonstrated glucose balance in control animals, but released glucose with dexamethasone 9. The gut and kidneys may play an important role in the altered glucose dynamics seen in patients with sepsis and other catabolic diseases. PMID- 3838134 TI - Metabolism of aminoglutethimide in humans: quantification and clinical relevance of induced metabolism. AB - Hydroxylaminoglutethimide [3-ethyl-3-(4-hydroxylaminophenyl)piperidine-2,6-dione] (HxAG), aminoglutethimide [3-(4-aminophenyl)-3-ethylpiperidine-2,6-dione] (AG) and N-acetyl-aminoglutethimide (N-AcAG) have been quantified by high performance liquid chromatography using m-aminoglutethimide (metaAG) as the internal standard in serial 24 h urine collections from a patient on chronic AG therapy without steroid supplementation. HxAG is the product of a major AG-induced metabolic pathway since the ratio [HxAG]/[AG] rises with time. In contrast the ratio [N AcAG]/[AG] decreases with time. A rapid, simple colorimetric assay has been used to quantify HxAG in urine from both male and female patients receiving a range of doses of AG and to show that induced metabolism is a general phenomenon even at low doses (125 mg twice daily). AG therapy is known to alter the metabolic rate and plasma half-life of a number of coadministered compounds including dexamethasone and warfarin. Clinicians should remain alerted to this phenomenon. PMID- 3838135 TI - Amniotic fluid prostaglandins do not reflect human fetal lung maturation. AB - Experimental data suggest the involvement of classic prostaglandins (PG), prostacyclin (PGI2) and thromboxane A2 (TxA2) in fetal pulmonary development. To explore this possibility in man, we assayed serial amniotic fluid samples from 33 women for 13,14-dihydro-15-keto-PGF2 alpha (M-PGF2 alpha, a metabolite of PGF2 alpha), 6-keto-PGF1 alpha (a breakdown product of prostacyclin (PGI2)), and thromboxane B2 (a metabolite of TxA2) as well as for the lecithin/sphingomyelin (L/S) ratio and phosphatidylglycerol. No difference in these prostanoids was seen between the samples with the immature (less than 2) or mature (greater than or equal to 2) L/S ratio, or between the samples with undetectable or detectable phosphatidylglycerol. The L/S ratio matured in 16 women and phosphatidylglycerol became detectable in 19 women during serial sampling, but even in these women the changes in the amniotic fluid prostanoids were inconsistent. It is concluded that the amniotic fluid M-PGF2 alpha, 6-keto-PGF1 alpha and TxB2 do not reflect fetal pulmonary maturity. PMID- 3838136 TI - Damage to the corneal endothelium during Nd/YAG photodisruption. AB - Damage to the human corneal endothelium, as seen by specular microscopy, associated with short pulsed neodymium: yttrium-aluminium-garnet (Nd/YAG) laser iridotomy and capsulotomy, is described. A specular and scanning electron microscopical study of fresh in vitro rabbit eyes submitted to Nd/YAG iridotomy was performed to investigate the nature of the endothelial damage. The majority of lesions showed irreversible changes ranging from individual cell destruction to disruption of large areas of the endothelium, while cells adjacent to these lesions had changes of an apparently reversible nature. It was possible to correlate accurately these scanning electron microscopic changes with the appearances seen with the clinical specular microscope. The extent of such damage appears to be related to the quantity of power delivered, its delivery mode, the number of laser bursts, and the target tissue/endothelium distance. The possible causes for such damage are discussed. PMID- 3838137 TI - In vitro studies with a pulsed neodymium/YAG laser. AB - The relationships between the destructive effects of Q-switched Nd/YAG laser pulses and a number of experimental parameters were studied for various target materials including in particular excised, fixed samples of human trabecular meshwork. The laser parameters altered were the pulse energy, the convergence angle of the focused beam, and the position of the focus of the beam relative to the target's axial position. The main finding was that it was possible to make deep holes, of a diameter less than 100 micron, in virtually transparent samples of trabecular meshwork with a laser delivery system of 6 degrees convergence and pulse energies of 14 mJ or more. The relevance of this and the other experimental results to the development of a reliable system for performing internal trabeculotomies for the treatment of open-angle glaucoma is presented. PMID- 3838138 TI - Thermal lens measurements in the cornea. AB - Q-switched pulses from a neodymium/YAG (yttrium-aluminium-garnet) laser were passed through corneal discs taken from the enucleated eyes of three baboons and four rabbits. The time course of heat dissipation following absorption of laser energy by the tissue was studied with the use of a second continuous wave laser beam acting as a probe. It was found that the absorption of each neodymium/YAG pulse created a transient divergent lens within the cornea as theoretical considerations predicted. The relaxation time that characterised the decay of this thermal lens for a 1/e laser beam diameter of 2.0 mm was found to be 2.3 +/- 0.1 s (mean +/- standard error for 12 separate groups of measurements). Our results show that Q-switched laser pulses passing through apparently unaffected transparent tissues can induce thermal lens effects which persist for several seconds. The optical transfer of each pulse in a stream will be identical only if enough time is left between pulses for the tissues to return to their initial state. Therefore, when such laser pulses sharply focused to perform high precision intraocular surgery are used, thermal lensing in the transparent ocular media must limit the rate at which pulses can be usefully delivered. PMID- 3838139 TI - A special lipid mixture for membrane fluidization. AB - The potency for membrane fluidization of mixtures containing neutral lipids (NL), phosphatidylcholine (PC) and phosphatidylethanolamine (PE) from hen egg yolk was tested on human erythrocytes and lymphocytes. A specific mixture consisting of 70% NL, 20% PC and 10% PE was found to be a potent membrane fluidizer operating almost exclusively by extracting membrane cholesterol. Spectral results and electron micrographs indicate that aqueous dispersion of this mixture consists of chylomicron-like assemblies where the neutral lipids provide the hydrophobic core on the surface of which phospholipids are spread as a monolayer. PMID- 3838140 TI - Interactions of polymerized phospholipid vesicles with cells. Uptake, processing and toxicity in macrophages. AB - We have studied the uptake of photopolymerized multilamellar vesicles composed of bis(1,2(methacryloyloxy)dodecanoyl)-L-alpha-phosphatidylchol ine (DPL) by mouse peritoneal macrophages in vitro. Vesicles composed of polymerized DPL are taken up more rapidly and extensively than vesicles composed of conventional phosphatidylcholine. The uptake of radioactive DPL vesicles was not blocked by incubation with unlabelled phosphatidylcholine vesicles in either the fluid or gel state. Likewise, fluid-phase negatively charged vesicles failed to block uptake of DPL vesicles, whereas solid-phase negatively charged vesicles did have a blocking effect. A radioactive lipophilic marker (dipalmitoylphosphatidyl[N methyl-3H]choline) incorporated into DPL vesicles was metabolized at essentially the same rate whether the vesicles were polymerized or not. Nonpolymerized DPL vesicles were quite toxic to macrophages, whereas polymerized DPL vesicles or vesicles composed of conventional phosphatidylcholines were not toxic. PMID- 3838141 TI - Perturbation of egg phosphatidylcholine and dipalmitoylphosphatidylcholine multilamellar vesicles by n-alkanols. A fluorescent probe study. AB - The perturbing effects of n-alkanols (pentanol, decanol and tetradecanol) in egg phosphatidylcholine and dipalmitoylphosphatidylcholine multilamellar vesicles were studied with five fluorescent probes, 1-(4'-trimethylaminophenyl)-6 phenylhexa-1,3,5-triene (TMA-DPH), 1,6-diphenyl-1,3,5-hexatriene, and 2-, 7-, and 12-(9-anthroxyloxy)stearic acid (2-, 7-, and 12-AS). These probes localize at various depths in the membrane, enabling study of the membrane-order gradient. Phase-modulation fluorescence spectroscopy was used to measure steady-state anisotropies, excited-state lifetimes and differential polarized lifetimes from which the limiting hindered anisotropies (r infinity) and the logarithm of the rotational rate (log R) were calculated. The probes that localize at about the same depth in the membrane (TMA-DPH and 2-AS, diphenylhexatriene and 12-AS) generally, but not always, showed similar changes in r infinity and log R with added alkanols. However, the absolute values of r infinity and log R were usually different. The inconsistencies are attributed to differences in the probes' sizes, structures, photophysical properties and perturbing abilities. The perturbation of membranes by alkanols is chain-length-dependent. Pentanol disorders the membrane at all depths but is more effective in the membrane center than nearer to the polar headgroups of the phospholipids, tetradecanol can be accommodated into the membrane without effect or with increased order and the effects of decanol are intermediate between pentanol and tetradecanol. Our results with alkanols indicate that: a single perturber can have different effects on membrane order at different depths in the bilayer; the perturbation is observed at and distant from the perturbers' location in the membrane, and the bilayer center is more susceptible to perturbation by alkanols than the region of the bilayer near the phospholipid headgroups. PMID- 3838142 TI - Acyl selectivity in the transfer of molecular species of phosphatidylcholines from human erythrocytes. AB - This report describes the molecular species composition of phosphatidylcholines (PC) transferred from human erythrocytes to acceptor vesicles composed of cholesterol and single PC species in the presence of PC-specific transfer protein from bovine liver. The compositions of the PC isolated from the vesicles were determined by capillary GLC as the diacylglycerol trimethylsilyl ethers. The cellular PC species appearing in the acceptor vesicles were enriched in unsaturated species and showed a low content of dipalmitoyl PC compared to untreated erythrocytes. This trend was independent of the composition of the PC used to construct the acceptor vesicles and it was possible to determine that the relative rates of efflux of the palmitoyl-containing phosphatidylcholines decreased in the order: palmitoyl-linoleoyl greater than palmitoyl-oleoyl greater than dipalmitoyl and in the stearoyl series, stearoyl-linoleoyl greater than stearoyl-oleoyl. No clear trend was distinguished for the influence of chain length on the efflux, thus preventing an unambiguous assignment of the order of removal of all species from the cell membrane. Results derived for arachidonoyl containing species were compromised by evidence for oxidation occurring during incubations at 37 degrees C. To confirm that acyl selectivity was also possible during transfer in the absence of the transfer protein, the efflux of 14C-labeled soya PC and [14C]dipalmitoyl PC from prelabeled erythrocytes was measured using plasma as the acceptor. As predicted by the chromatographic analyses, 14C-labeled soya PC effused up to 10-times faster than [14C]dipalmitoyl PC from the red cell membrane. Thus, the more rapid transfer of unsaturated PC cannot be explained entirely as a specificity of the transfer protein and is consistent with the hypothesis that intermolecular interactions involving PC molecules within the erythrocyte membrane, become weaker with increasing unsaturation. The results suggest a potential role of PC-specific transfer protein as a probe of the nature of PC interactions within biological membranes. PMID- 3838143 TI - Morphology and phase behavior of two types of unilamellar vesicles prepared from synthetic phosphatidylcholines studied by freeze-fracture electron microscopy and calorimetry. AB - Differential scanning calorimetry and freeze-fracture electron microscopy have been used to characterize the phase behavior and morphology of two types of unilamellar vesicles composed of synthetic phosphatidylcholines. The first type displayed an average diameter of roughly 100 nm and was formed by slow dilution and dialysis of octylglucoside-solubilized lipid. These large, unilamellar vesicles were termed dialyzed, octylglucoside vesicles and could be obtained as a fairly well defined and uniform population of vesicles. The second vesicle type was prepared by a unique procedure involving dialysis of deoxycholate-solubilized lipid at its pre-transition temperature. This procedure produced a much more heterogeneous distribution of vesicle sizes (500 to 4000 nm in diameter) and left some dilamellar and oligolamellar species which could not be conveniently separated from the giant, unilamellar vesicles constituting the major portion of the sample. Both populations of vesicles displayed phase behavior similar, but not identical to that of large, multilamellar vesicles (LMV). Fracture-face morphology of the gel phase was also observed to differ between the two unilamellar and the multilamellar species. LMV have previously been shown to have clear undulated or banded fracture-faces in the P beta phase, while octylglucoside vesicles are shown here to have facetted fracture-faces. Giant, unilamellar vesicles displayed a faint banded morphology similar to but less distinct than that of the LMV P beta phase. These results have demonstrated that bilayer apposition is not required to support the banded fracture-face morphology characteristic of the P beta phase but that a limiting curvature is necessary. PMID- 3838144 TI - Characterization of a photosensitive glucose derivative. A photoaffinity reagent for the erythrocyte hexose transporter. AB - The photosensitive reagent 6-N-(4-azido-2-hydroxy-3,5-diiodobenzoyl)-D glucosamine has been assessed as a potential photoaffinity label for the hexose transporter. Under zero-trans conditions, transport experiments performed in the dark reveal that the reagent inhibits the uptake of D-glucose in resealed human erythrocyte ghosts. Increasing the concentration of glucose in the transport medium has a protective effect, reducing the inhibition. Kinetic analysis indicates that the probe acts as a competitive inhibitor with high affinity for the erythrocyte hexose transporter (Ki between 0.07 and 0.2 microM). Exposure to a 280 nm filtered high intensity mercury-vapor lamp results in a rapid and efficient photolysis. At low concentrations of the probe, specific labeling of membrane preparations was observed. Autoradiograms of 10% SDS gels revealed the specific labeling of bands 4.51 and 6. This labeling was concentration-dependent and protected by D-glucose (not the L-isomer) and phloretin in the medium. When subjected to multiple exposures of low concentration of the photoaffinity reagent, apparent saturation was achieved. PMID- 3838145 TI - Isolation and characterization of hemorrhagic factors a and b from the venom of the Chinese habu snake (Trimeresurus mucrosquamatus). AB - Hemorrhagic factors a and b were isolated from Trimeresurus mucrosquamatus venom by Sephadex G-100, CM-Sephadex C-50 and DEAE-Sephacel column chromatographies. The hemorrhagic factors were homogeneous, as established by a single band on acrylamide gel electrophoresis, isoelectric focusing and sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis. Molecular weights of 15 000 and 27 000 were found for hemorrhagic factors a and b, respectively. Factor a possesses proteolytic activity hydrolyzing the His(10)-Leu(11), Tyr(16)-Leu(17) and Arg(22) Gly(23) bonds of oxidized insulin B chain, whereas, factor b hydrolyzed only the Ala(14)-Leu(15) bond. Hemorrhagic activity of these hemorrhagic factors was inhibited by ethylenediaminetetraacetic acid, 1,10-phenanthroline or p chloromercuribenzoate, but not by soybean trypsin inhibitor or diisopropyl fluorophosphate. The hemorrhagic factors were injected into the skin of the back of albino rabbits, and the minimum hemorrhagic dose of factors a and b was 1.7 and 2.3 micrograms, respectively. These purified hemorrhagic factors were not lethal at 15 micrograms/g in mice. Factor a hydrolyzed the B beta chain of fibrinogen, while factor b hydrolyzed the A alpha chain. Hemorrhagic factor a was shown to differ immunologically from factor b. Factors a and b produced systemic hemorrhage in internal organs such as the heart and stomach of mice. Moreover, factor b produced hemorrhage in the liver. PMID- 3838146 TI - [Cell proliferation in mouse tissues after thymectomy and the administration of T activin]. AB - The epithelium of mouse cornea and lymph nodes was examined for DNA-synthetic and mitotic activity at different times after thymectomy and administration of T activin, an active factor of the thymus. Thymectomy entails retardation of the rate of corneal epithelium regeneration, diminution in both tissues under study of the amplitude of oscillations in cell proliferation throughout the day. Administration to the animals of the immunoactive thymic factor T-activin makes the circadian rhythm of cell proliferation return to normal. It is assumed that T activin raises the capacity of lymphocytes to interact with epithelial cells, which manifests itself in the enhancement of their mitotic activity. PMID- 3838147 TI - Electrically evoked activity in the human external anal sphincter. AB - Following electrical stimulation of perianal skin, short latency evoked electromyographic (EMG) responses from the external and sphincter have been interpreted as the electrophysiological correlate of the anal reflex. Delayed responses in patients with idiopathic faecal incontinence have been interpreted as evidence for denervation of the external anal sphincter. Electrically evoked responses were studied in normal subjects, either before and during spinal anaesthesia (n = 8), or before and during competitive neuromuscular blockade (n = 4), instituted for operative purposes. Short latency responses persisted unchanged in either latency or duration during spinal anaesthesia whereas long latency responses were completely abolished. Both short and long latency responses were abolished during competitive neuromuscular blockade. Short latency responses are not spinal reflex in nature, but due to stimulus activation of alpha-motoneuronal terminal branches. Delayed responses in incontinent patients cannot be interpreted as evidence for pudendal neuropathy. Long latency (i.e. greater than 40 ms) responses demand a functional sacral spinal cord and represent the true anal reflex. Their wide range of latency in normal subjects suggests this measurement will be of little use in confirming the presence or absence of pudendal neuropathy, and that other measures of neuropathy may be more appropriate. PMID- 3838148 TI - Effects of amsacrine and other DNA-intercalating drugs on nuclear and nucleolar structure in cultured V79 Chinese hamster cells and PtK2 rat kangaroo cells. AB - Amsacrine [m-AMSA; 4'-(9-acridinylamino)methanesulfon-m-anisidide] is a synthetic intercalating agent with clinical utility in the treatment of acute leukemias and lymphomas. However, as with other intercalators, its mechanism of action is uncertain. We have examined structural changes induced by amsacrine and other intercalators (actinomycin D, Adriamycin, mitoxantrone, 9-aminoacridine) in cultured Chinese hamster (V79-171b) and rat kangaroo kidney epithelial (PtK2) cells, using light- and electron microscopy with simultaneous assessment of cell survival. During chronic exposure at low concentrations, amsacrine causes cell and nuclear enlargement, lobulation of the nucleus, and nucleolar segregation. Nucleolar segregation was also induced by the other four intercalators. The cytotoxic potency of these drugs, as measured by cell survival after 1-hr exposure, was compared with potency of induction of nucleolar segregation. Relative potencies in the two assays varied by more than 10(4)-fold, with actinomycin D the most effective and amsacrine the least effective inducer of nucleolar segregation relative to cytotoxic potency. Thus, although all five intercalators induced nucleolar segregation with high specificity, this lesion does not correlate with cell killing by these drugs. However, interference with nucleolar function (i.e., ribosomal RNA synthesis) may be responsible for the reversible cytostatic effect observed on chronic exposure to some intercalators (actinomycin D, 9-aminoacridine) at low concentrations. PMID- 3838149 TI - [Computer analysis of the ECG curve as a contribution to the automatic diagnosis of heart diseases]. PMID- 3838150 TI - DNA repair in an active gene: removal of pyrimidine dimers from the DHFR gene of CHO cells is much more efficient than in the genome overall. AB - DNA repair was measured in the dihydrofolate reductase gene in Chinese hamster ovary cells, amplified for the gene, by quantitating pyrimidine dimers with a specific UV-endonuclease. More than two thirds of the dimers had been removed from a 14.1 kb restriction fragment of the gene by 26 hr after irradiation (20 J/m2), while little removal was detected in fragments upstream of the gene and only 15% were removed from the genome overall. This suggests that damage processing can vary according to function or activity of affected sequences, which has general implications for correlations of DNA repair with survival and mutagenesis. Perhaps preferential repair of vital sequences facilitates UV resistance of these cells despite low overall repair levels. PMID- 3838151 TI - Knee injuries in gymnastics. AB - A review of injury patterns to the knee joint in gymnastics seen at our sport medicine clinic over a six and one-half year period reveals the patellofemoral pain syndrome to be more than twice as frequent as any other type of injury. Sprains are second in frequency but first in order of problems requiring emergency surgical treatment. The intensity of training correlates with the various overuse syndrome encountered, and the perfection of intricate routines and tricks can lead to significant injury of ligaments and menisci. PMID- 3838152 TI - Identification of muscarinic receptor subtype mediating colonic response to eating. AB - The colonic motor response to eating requires cholinergic transmission. Recent studies have identified two subclasses of muscarinic receptor, the M1 and the M2 subtype. The aim of this study was to evaluate the muscarinic receptor subtype responsible for mediating the gastrocolonic response. Spike potential (SP) activity and intraluminal pressure were recorded, during fasting and after eating a 1000-kcal mixed meal, from the distal colon of 10 healthy volunteers. In each subject three paired studies were carried out: either atropine (a nonselective antimuscarinic, 1 mg), pirenzepine (a selective M1 antimuscarinic, 10 mg), or saline were infused intravenously before eating, using a double-blind crossover design. The meal significantly increased colonic spike potential activity (17.6 +/- 3.9, SP/30 min) above fasting values (2.7 +/- 0.6, P less than 0.01) in the control study. There was no postprandial increase in spike potential activity (3.3 +/- 0.9, SP/30 min) after atropine. The meal also significantly increased spike potential activity (15.4 +/- 3.3 SP/30 min, P less than 0.01) above fasting levels and equal to that of the controls, in the pirenzepine study. These data suggest that the colonic motor response to eating is mediated through the M2 but not the M1 subtype of muscarinic receptors. PMID- 3838153 TI - Quantitation and characterization of human plasma neurotensin-like immunoreactivity in response to a meal. AB - The secretion and metabolism of endogeneous neurotensin-like immunoreactivities after a test meal were studied in five healthy human subjects. Intact neurotensin and the N-terminal metabolic fragment, neurotensin 1-8, were quantified by radioimmunoassay with C- and N-terminally directed antisera in conjunction with gel filtration of plasma samples obtained at timed intervals. Both C- and N terminal neurotensin-like immunoreactivities rose after the meal, reaching a plateau level after 20 and 30 min, respectively. During the plateau phase, which lasted for the rest of the experimental period of 180 min, the molar ratio of intact neurotensin to neurotensin 1-8 remained approximately constant at 1:4.6. Meal-stimulated immunoreactive neurotensin appeared to be metabolized in a manner comparable to that of exogenously infused neurotensin in man. The results suggest that intact neurotensin is secreted at an approximately constant rate during the plateau phase. The relatively low plateau level of neurotensin 1-8, which has a much longer half-life than intact neurotensin in the circulation, implies that only a fraction of the secreted intact neurotensin is metabolized to neurotensin 1-8, indicating the existence of alternative pathways of neurotensin metabolism. PMID- 3838154 TI - In vivo effects of cadmium on some enzyme activities in tissues of the freshwater catfish, Heteropneustes fossilis. AB - Alterations in the activities of some enzymes in a freshwater catfish, Heteropneustes fossilis, have been examined in liver, kidney, intestine, ovary, gills, and muscles after exposure to 0.26 mg/liter of cadmium for 15, 30, and 60 days. The fish were hyperglycemic and hyperlactemic after 15 and 30 days of exposure. The liver and muscle glycogen content was depleted in the first two periods of exposure. In contrast, 60 days of cadmium treatment increased the glycogen content of the two tissues. Liver lactic acid level was elevated after 15 days. Muscle lactic acid content fell significantly after 15 and 60 days of exposure, but it was elevated after 30 days. Acid phosphatase activity was inhibited in liver, ovary, and gills but the enzyme activity increased in kidney and intestine. The activity of alkaline phosphatase decreased in liver, kidney, and intestine but elevation was recorded in ovary and muscles. In all three exposure periods, hexokinase activity of kidney and ovary was inhibited but the enzyme activity increased in intestine. Hexokinase showed elevation in liver, gills, and muscle after 15 and 30 days of exposure and inhibition after 60 days of exposure. The activity of xanthine oxidase decreased in liver and muscles and elevated in the rest of the tissues. Glutamate dehydrogenase fell significantly in intestine, ovary, and gills. In liver, kidney, and muscles the enzyme activity was elevated. Liver, intestine, gills, and muscles showed elevation in aminoacid oxidase activity. However, the enzyme activity was inhibited in kidney and in ovary. PMID- 3838155 TI - Schistosoma mansoni: radiometric assay of lectin binding specificities of the major egg glycoprotein and its carbohydrate-rich fragment. AB - The binding by lectins of the Schistosoma mansoni major egg glycoprotein and of a carbohydrate-rich fragment which is serologically cross-reactive with it was studied. The major egg glycoprotein was purified from a crude soluble egg antigen by a succession of affinity chromatography procedures on concanavalin A-sepharose and by ion-exchange chromatography. The carbohydrate-rich fragment was isolated by ultrafiltration of the crude glycoprotein fraction initially obtained from the crude soluble egg antigens. The major egg glycoprotein and the carbohydrate-rich fragment contain 77 and 92.5% carbohydrate, respectively. When radioiodinated and run on SDS-polyacrylamide gel electrophoresis, each of them exhibited a single peak with respective Rf values of 0.33 and 1.0, and their respective molecular weights were 70K and 10-13K. The binding of the radioiodinated major egg glycoprotein and the carbohydrate-rich fragment by peanut agglutinin, Ricinus communis agglutinin-60, wheat germ agglutinin, and lotus agglutinin was studied by double diffusion in agar, and by a radiometric solid-phase assay in which the lectins were used to coat microtiter plates. The latter assay was employed to determine the specificity of the binding by inhibition with the specific sugars. Both the major egg glycoprotein and the carbohydrate-rich fragment bound specifically to concanavalin A columns as indicated by their isolation procedure. They also bound specifically to peanut agglutinin, R. communis agglutinin 60, and lotus agglutinin, while binding by wheat germ agglutinin appeared not to be specific.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838156 TI - Effect of steviol and its structural analogues on glucose production and oxygen uptake in rat renal tubules. AB - The effect of several natural products of Stevia rebaudiana on glucose production and oxygen uptake in rat renal cortical tubules was investigated. Steviol, isosteviol and glucosilsteviol decreased glucose production and inhibited oxygen uptake. The sweet principle stevioside, and steviolbioside, however, were without effect on gluconeogenesis and oxygen uptake. PMID- 3838157 TI - Application of O-(4-diazo-3-[125I]iodobenzoyl)sucrose for the detection of the catabolic sites of low density lipoprotein. AB - The sites of degradation of human low density lipoprotein (LDL), are analyzed using the novel labelling compound O-(4-diazo-3-[125I]iodobenzoyl)sucrose (D125IBS). The decay from rat serum of D125IBS-labelled LDL is identical to the serum decay of conventionally iodinated (ICI method) LDL. The radioactivity derived from D125IBS-labelled LDL accumulates predominantly in the liver after intravenous injection and the hepatic radioactivity remains associated with the lysosomal compartment for an extended period of time, when compared to the radioactivity derived from conventionally iodinated LDL. It is concluded that the D125IBS labelling procedure is an interesting new tool to study the sites of catabolism of serum lipoproteins. PMID- 3838158 TI - Guanine nucleotides modulate the ligand binding properties of cell surface folate receptors in Dictyostelium discoideum. AB - Dictyostelium discoideum cells show 2 distinct classes of cell surface binding sites for folates. One type is non-specific, i.e., binds folic acid (FA), 2 deaminofolic acid (DAFA), and methotrexate (MTX) with similar affinity (K0.5 congruent to 140 nM). Scatchard analysis of this non-specific binding type suggests either heterogeneity or negative cooperativity. Isolated D. discoideum membranes show similar binding characteristics. Guanine nucleotides changed the binding levels of [3H]MTX. In the presence of 0.1 mM GTP, the number of binding sites remains unchanged, while the affinity decreases. GDP and guanylyl imidodiphosphate (GPPNP) are required at about 20-fold higher concentration than GTP, which elicits a half-maximal effect at 15 microM. Other guanine and adenine nucleotides are ineffective up to 1 mM. These results suggests that the non specific cell surface receptor for folic acid interacts with a guanine nucleotide regulatory (G-) protein. PMID- 3838159 TI - 4-Hydroxyalk-2-enals are substrates for glutathione transferase. AB - The 4-hydroxyalk-2-enals are established products of lipid peroxidation that are conjugated with intracellular glutathione. Cytosolic glutathione transferases from rat liver were shown to give high specific activities with 4-hydroxynonenal and 4-hydroxydecenal. The isoenzyme giving the highest specific activity was glutathione transferase 4-4. The rate of the spontaneous conjugation reaction is negligible in comparison with the rate calculated for the cellular concentration of the glutathione transferases. It is proposed that a major biological function of the glutathione transferases is to protect the cell against products of oxidative metabolism, such as epoxides, organic hydroperoxides, and 4 hydroxyalkenals. PMID- 3838160 TI - Structure of chicken calcitonin predicted by partial nucleotide sequence of its precursor. AB - DNA complementary to chicken ultimobranchial gland mRNA was cloned into the Pst I site of plasmid vector pBR322. A plasmid was selected by DNA-mRNA hybridization. We report here the partial nucleotide sequence of chicken calcitonin mRNA and the deduced complete amino acid sequence of chicken calcitonin. PMID- 3838161 TI - Two-site phosphorylation of the phosphorylatable light chain (20-kDa light chain) of chicken gizzard myosin. AB - When prepared under specified conditions chicken gizzard myosin was obtained which when incubated with ATP gave rise to a diphosphorylated as well as the monophosphorylated form of P light chain. Formation of the diphosphorylated light chain occurred more readily with these myosin preparations, but could also be obtained by prolonged incubation of the isolated whole light chain fraction with kinase preparations from rabbit skeletal and chicken gizzard muscles. Using isolated light chains as substrate the more readily formed monophosphorylated light chain contained serine phosphate while the diphosphorylated form contained serine and threonine phosphates. PMID- 3838162 TI - Distribution and release of peptide YY in dog measured by specific radioimmunoassay. AB - Peptide YY (PYY), neuropeptide Y, and pancreatic polypeptide (PP) are the third family of structurally related peptides to be extracted from the brain-gut axis. In the present study we have validated a sensitive and specific assay for PYY and used it to measure the distribution of PYY in the canine gastrointestinal tract. In addition we have compared the PYY and PP responses to both an intragastric meal and to insulin hypoglycemia. The highest concentration of PYY was present in the canine ileum (1610 +/- 123 ng/g) and colon (1607 +/- 194 ng/g). Significant (p less than 0.05) increases in both circulating PP and PYY concentrations were observed in response to the meal (mean delta PP = 180 +/- 43 pg/ml; mean delta PYY = 205 +/- 61 pg/ml). In contrast, only serum PP concentrations (mean delta PP = 294 +/- 36 pg/ml) increased significantly (p less than 0.01) in response to insulin hypoglycemia, demonstrating differences in the sensitivity of the PP and PYY cells to vagal stimulation. The present demonstration of PYY release in response to a physiological stimulus fulfills one of the prerequisites for hormonal status. PMID- 3838163 TI - Pancreatic polypeptide, peptide YY, and neuropeptide Y family of regulatory peptides. PMID- 3838164 TI - How much malabsorbed sugar causes "diarrhea?". PMID- 3838165 TI - A decentralized mental health reporting program. PMID- 3838168 TI - Neodymium:YAG laser anterior capsulotomy and a possible new application. AB - Neodymium:YAG laser anterior capsulotomy performed in nine cases had a high incidence of complications. In 220 cases of Nd:YAG laser nucleus pretreatment, without opening the anterior capsule, the time required for emulsification of the nucleus was less than with standard techniques. PMID- 3838166 TI - The potential benefits of therapeutic splenectomy for patients with Hodgkin's disease and non-Hodgkin's lymphomas. AB - Thirty-four patients with Hodgkin's disease and non-Hodgkin's lymphoma underwent therapeutic splenectomies to improve hematologic tolerance for chemotherapy. The mean age was 40 years; there were 16 males and 18 females. Fourteen had Hodgkin's disease, 19 had non-Hodgkin's lymphoma, and 1 had malignant histiocytosis. Nineteen had palpable splenomegaly, 19 had marrow involvement and 20 had splenic involvement by lymphoma. The following data were analyzed before and after splenectomy: mean white blood cell count (WBC) and platelet count on planned first day of cycle, delay ratio of chemotherapy delivery and percent maximal dose rate. Thirteen patients had non-Hodgkin's lymphoma, splenomegaly and positive bone marrow and showed significant benefit in all of the aforementioned parameters. Of the patients with prior irradiation, only those who completed their radiation greater than six months prior to splenectomy showed benefit. Ten patients had Hodgkin's disease, negative bone marrow and no splenomegaly. This group showed significant improvement in mean platelet count but more limited benefit in delay ratio and percent maximal dose rate. Thus, selected patients with lymphoma who are experiencing delays in chemotherapy because of poor count tolerance may benefit from splenectomy. PMID- 3838167 TI - Neodymium:YAG laser posterior capsulotomy results and complications. AB - I have reviewed 210 cases of Nd:YAG laser posterior capsulotomy. The results indicate that although the procedure is extremely safe, complications can occur, at least one of which is severe. PMID- 3838169 TI - Intraocular lens design for the neodymium:YAG laser. AB - Phacoemulsification was performed on both lenses of 24 rabbits. One eye received a lens implant with a convex-plano optic; the fellow eye received an implant with a convex-concave optic which separated the posterior surface of the implant from the posterior capsule by 0.2 mm, 0.3 mm, or 0.4 mm. A YAG laser capsulotomy was performed on all eyes immediately following surgery and an assessment of both microscopic and macroscopic YAG-induced lens damage was made. The meniscus optics with their capsule-implant separation showed significantly less YAG-induced damage than their convex-plano counterparts without this separation. Increasing the amount of capsule-implant separation beyond 0.2 mm did not enhance the degree of protection from YAG-induced damage. PMID- 3838171 TI - Interaction of the recA protein of Escherichia coli with single-stranded DNA. AB - The interaction of recA protein with single-stranded (ss) phi X174 DNA has been examined by means of a nuclease protection assay. The stoichiometry of protection was found to be 1 recA monomer/approximately 4 nucleotides of ssDNA both in the absence of a nucleotide cofactor and in the presence of ATP. In contrast, in the presence of adenosine 5'-O-(thiotriphosphate) (ATP gamma S) the stoichiometry was 1 recA monomer/approximately 8 nucleotides. No protection was seen with ADP. In the absence of a nucleotide cofactor, the binding of recA protein to ssDNA was quite stable as judged by equilibration with a challenge DNA (t1/2 approximately 30 min). Addition of ATP stimulated this transfer (t1/2 approximately 3 min) as did ADP (t1/2 approximately 0.2 min). ATP gamma S greatly reduced the rate of equilibration (t1/2 greater than 12 h). Direct visualization of recA X ssDNA complexes at subsaturating recA protein concentrations using electron microscopy revealed individual ssDNA molecules partially covered with recA protein which were converted to highly condensed networks upon addition of ATP gamma S. These results have led to a general model for the interaction of recA protein with ssDNA. PMID- 3838170 TI - Tetrahydromethanopterin-dependent methanogenesis from non-physiological C1 donors in Methanobacterium thermoautotrophicum. AB - Methanogenesis from the non-physiological C1 donors thioproline, thiazolidine, hexamethylenetetramine, formaldehyde (HCHO), and HOCH2-S-coenzyme M (CoM) was catalyzed by cell extracts of Methanobacterium thermoautotrophicum under a hydrogen atmosphere. Tetrahydromethanopterin (H4MPT) and HS-CoM were required in the reaction mixture. The non-physiological compounds were found to be in chemical equilibrium with HCHO, which has been shown to react spontaneously with H4MPT to form methylene-H4MPT, an intermediate of the methanogenic pathway at the formaldehyde level of oxidation. Highfield (360 MHZ) 1H and 13C nuclear magnetic resonance studies performed on the interaction between HCHO and HS-CoM showed that these compounds are in equilibrium with HOCH2-S-CoM and that the equilibrium is pH dependent. When methanogenesis from the non-physiological donors was followed under a nitrogen atmosphere, the C1 moiety from each compound underwent a disproportionation, forming methenyl-H4MPT+ and methane. The compounds tested served as substrates for the enzymatic synthesis of methenyl-H4MPT+. PMID- 3838172 TI - Biosynthesis in vitro of disialosylneolactotetraosylceramide by a solubilized sialyltransferase from embryonic chicken brain. AB - A sialyltransferase involved in the biosynthesis in vitro of LD1c (NeuAc alpha 2 8NeuGc alpha 2-3Gal beta 1-4Glc-NAc beta 1-3Gal beta 1-4Glc-Cer) has been characterized from 9 to 11-day-old embryonic chicken brains. The CMP [14C]NeuAc:LM1(alpha 2-8)sialyltransferase (SAT-2) sedimented (75%) at the junction of 0.75 and 1.2 M on a discontinuous sucrose density gradient when still membrane bound. In addition to the biosynthesis of LD1c, the detergent solubilized (0.4% Nonidet P-40) preparation also catalyzes the transfer of sialic acid to O-8 of sialic acid in GM3 to form GD3 (NeuAc alpha 2-8NeuAc alpha 2 - 3Gal beta 1 - 4Glc - Cer). Substrate inhibition studies indicated that these two reactions are probably catalyzed by the same enzyme, SAT-2. The kinetic parameters of SAT-2 activity were determined. The Km values were 70 and 63 microM with CMP-[14C]NeuAc and LM1, respectively, when the detergent-solubilized supernatant fraction was used as enzyme source. The (alpha 2-8)-linkage between the terminal and penultimate sialic acids was determined using nonradioactive CMP NeuAc and [Ac-14C]LM1 as substrates (Higashi, H., and Basu, S. (1982) Anal. Biochem. 120, 159-164) for the enzyme, followed by identification of the permethylated [14C]sialic acid of the product by radioautography. At 0.5 mM N ethylmaleimide, the SAT-2 activity was inhibited 50% whereas SAT-1 and SAT-3 activities (Basu, M., Basu, S., Stoffyn, A., and Stoffyn, P. (1982) J. Biol. Chem. 257, 12765-12769) remained uninhibited. PMID- 3838173 TI - N-Acetylneuraminyllactosylceramide, GM3-NeuAc, a new influenza A virus receptor which mediates the adsorption-fusion process of viral infection. Binding specificity of influenza virus A/Aichi/2/68 (H3N2) to membrane-associated GM3 with different molecular species of sialic acid. AB - Agglutinates of native chicken erythrocytes caused by influenza virus A/Aichi/2/68 (H3N2) at 4 degrees C were potently fused and lysed at low pH (optimum pH 5.3) at 37 degrees C. Exogenous gangliosides GM3 (Sia alpha 2-3Gal beta 1-4Glc beta 1-ceramide) and GM2 (GalNAc beta 1-4(Sia alpha 2-3)-Gal beta 1 4Glc beta 1-ceramide) were integrated into the membranes of chicken asialoerythrocytes within 5-min incubation at 37 degrees C. We found that the incorporation of ganglioside GM3 containing N-acetylneuraminic acid into asialoerythrocytes restored the biological responsiveness to the virus as established by agglutination at 4 degrees C and fusion and hemolysis at 37 degrees C at pH 5.3. Biological responsiveness of GM3-NeuAc-erythrocytes to the virus was considerably higher than that of GM3-NeuGc-erythrocytes under the same experimental conditions. Treatment of the GM3-NeuAc-erythrocytes with neuraminidase again resulted in the complete abolishment of the response to the virus. Erythrocytes containing GM2-NeuAc showed no detectable biological responses toward the virus. The above results indicate that the hemagglutinin of influenza virus A/Aichi/2/68 (H3N2) recognizes the sialyloligosaccharide chain of ganglioside GM3 as its receptor which mediates the adsorption and fusion process on the virus entry into the host cells and has more preferential specificity for binding to N-acetylneuraminic acid-containing GM3 than that to N-glycolyl type in the target cell membranes. PMID- 3838174 TI - Regulation of cytochrome P-450 gene expression. Studies with a cloned probe. AB - A cDNA clone for cytochrome P-450e, a phenobarbitone-inducible species in rat liver, has been isolated and characterized. With the use of this cloned DNA, an attempt has been initiated to elucidate the factors regulating the cytochrome P 450 gene expression. Inhibitors of heme synthesis such as cobalt chloride and 3 amino-1,2,4-triazole block the induction of cytochrome P-450e by phenobarbitone at the level of transcription. This is evident from the decrease in the rate of synthesis of cytochrome P-450e, a decrease in the levels of specific translatable messenger RNA, a decrease in the specific cytoplasmic and nuclear messenger RNA contents, and nuclear transcription of cytochrome P-450e gene, as revealed by hybridization to the cloned probe, under these conditions. It is proposed that heme is a general regulator of cytochrome P-450 gene expression at the level of transcription, whereas the drug or its metabolite would impart the specificity needed for the induction of a particular species. PMID- 3838175 TI - Interaction of French-pressed liposomes with isolated bovine adrenal chromaffin cells. Characterization of the cell-liposome interactions. AB - Small unilamellar liposomes with an average external diameter of approximately 550 A were prepared by high pressure extrusion in a French press. Liposomes, composed of phosphatidylcholine, phosphatidylserine, and cholesterol at a molar ratio of 7:1:2, were incubated with suspensions of bovine adrenal chromaffin cells. The cell-liposome interactions were characterized using fluorescence and radiotracer techniques. Transfer of the liposomal contents into the cytoplasm was visualized by fluorescence microscopy, using fluorescence-labeled macromolecules, and further documented by flow cytometry with liposome-entrapped 5,6-carboxy fluorescein. The dose dependence, time course, and temperature dependence of the cell-liposome association, as determined by radioactive labeling both the liposomal membranes and their contents, indicate saturable interaction of the cells with intact liposomes (KappM approximately 5 X 10(-7) M lipid/10(6) cells at 37 degrees C). Using nonexchangeable fluorescent phospholipid analogs, the cell-liposome interactions were characterized by fluorescence resonance energy transfer and by fluorescence recovery after photobleaching. From these latter experiments we conclude that after 1-h incubation of 10(6) cells with 1 microM lipid at 37 degrees C, 30% of the cell-associated liposomes will have fused with the plasma membranes, resulting in the delivery of the contents of approximately 1.25 X 10(5) liposomes into each cell. Thus, liposomal delivery is an effective means to gain access to the cytoplasm and can be exploited to modulate physiological responses from within intact chromaffin cells. PMID- 3838176 TI - Longitudinal gradients of collagen and elastin gene expression in the porcine aorta. AB - The physical and chemical properties of the mammalian aorta are known to vary as a function of distance from the heart. These properties are highly dependent collagen and elastic fibers. In order to evaluate the mechanisms which regulate the accumulation of these two connective tissue proteins, gene expression was evaluated at both the biosynthetic and messenger RNA levels. Short-term (3 h) explant cultures of the medial portion of four segments of the descending aorta in newborn pigs were incubated in the presence of [3H] proline. Collagen production was quantified by collagenase digestion and elastin production was determined by immunoprecipitation. Between the conus arteriosus and the bifurcation of the iliac arteries, relative collagen synthesis increased 2-fold (from 5.8 to 12.0% of total protein synthesis), while relative elastin synthesis declined 10-fold (from 16.4 to 1.6% of total protein synthesis). Similarly, collagen production increased more than 7-fold (from 6.7 to 49.8 X 10(3) molecules/cell/h) while elastin production was reduced more than 3-fold (from 71.8 to 21.0 X 10(3) molecules/cell/h) along this developmental gradient. Elastin synthesis appeared to be controlled to a significant extent by the availability of elastin mRNA, since both cell-free translation and molecular hybridization to a cloned elastin gene probe showed gradients of elastin gene expression. Similarly, collagen synthesis was apparently regulated, at least in part, by an inverse gradient of collagen mRNA, as measured with a cloned cDNA for the pro alpha 1(I) collagen gene. Marked changes in the amount of non-elastin protein synthesis accompanied differentiation and accounted for larger changes in relative synthesis. These results suggest that the phenotype of the cells of the porcine artery wall is distinct in different regions of this organ at this developmental stage. PMID- 3838178 TI - My role as a clinical investigator and consultant to industry and the Food and Drug Administration (FDA) PMID- 3838177 TI - The acrosomal membrane of boar sperm: a Golgi-derived membrane poor in glycoconjugates. AB - The acrosome is a large secretory vesicle of the sperm head that carries enzymes responsible for the digestion of the oocyte's investments. The event leads to sperm penetration and allows fertilization to occur. Release of the acrosomal enzymes is mediated by the interaction between sperm acrosomal and plasma membranes (acrosome reaction). Biochemical characterization of the acrosomal membrane has been restrained by a lack of methods to isolate uncontaminated fractions of the membrane. Here, we use new methods to expose the membrane to in situ cytochemical labeling by lectin-gold complexes. We study the topology and relative density of glycoconjugates both across and along the plane of the acrosomal membrane of boar sperm. Detachment of the plasma membrane from glutaraldehyde-fixed cells exposed the cytoplasmic surface of the acrosome to the lectin markers; freeze-fractured halves of the acrosomal membrane were marked by "fracture-label" (Aguas, A. P., and P. Pinto da Silva, 1983, J. Cell Biol. 97:1356-1364). We show that the cytoplasmic surface of the intact acrosome is devoid of binding sites for both concanavalin A (Con A) and wheat germ agglutinin (WGA). By contrast, it contains a high density of neuraminidase-resistant anionic sites detected by cationic ferritin. On freeze-fractured sperm, the receptors for Con A partitioned with the exoplasmic membrane half of the acrosomal membrane. The Con A-binding glycoconjugates were accumulated on the equatorial segment of the membrane. A low density of WGA receptors, as well as of intramembrane particles, was found on the freeze-fracture halves of the acrosomal membrane. The plasma membrane displayed, in the same preparations, a high density of receptors for both Con A and WGA. We conclude that the acrosome is limited by a membrane poor in glycoconjugates, which are exclusively exposed on the exoplasmic side of the bilayer. Regionalization of Con A receptors on the acrosome shows that sperm intracellular membranes, like the sperm surface, express domain distribution of glycocomponents. PMID- 3838179 TI - Anatomy of a microcomputer. AB - The author discusses how to buy a microcomputer for the optometric office. What kinds of features should a neophyte look for in computer hardware? What kinds of software products are available and how should you select the right ones for your office? PMID- 3838180 TI - Computerizing management in an optometric practice. AB - Successful computer automated management of an optometric practice requires software products which are suitably engineered and designed to accomplish all required tasks cost and time effectively without intimidating the user. The design of the software's "human interface" which determines the ease of use and acceptance is discussed. The prioritization of management problem areas and the software requirements for their solution are evaluated. PMID- 3838181 TI - Microcomputer mediated visual developmental and perceptual therapy. AB - There are currently few computer programs written by optometrists for optometrists to be utilized as methods of treatment for those patients with deficits in the areas of developmental vision and perception. This paper reviews educational and commercially available programs that with certain modifications may meet the therapeutic needs of our patients. PMID- 3838182 TI - Computer low vision aids. AB - Computers are invading all facets of optometric practice including low vision care. This brief paper will discuss indications for prescribing computer low vision aids, hardware and software currently available, and provide several short case reports to illustrate how the visually impaired individual can utilize this new technology. PMID- 3838183 TI - Three-dimensional imaging of the wrist. AB - The objective of this study was to determine the diagnostic quality of three dimensional images of the carpal bones that could be constructed from raw data obtained from a computerized tomography scan. The quality of raw data collected was determined by collimation, slice interval, the number of projections, and x ray tube operating specifications. The quality of two-dimensional images that were constructed from the raw data was determined by user-specified parameters including zoom or magnification factor, convolution kernels, and centering. The two-dimensional images were modified by erasure, the level of reconstruction, and animation, which permitted isolation of individual carpal bones, the construction of three-dimensional images viewing the external and internal surfaces of the bones, and the rotation of the images to provide multiple views. Representative images are presented. PMID- 3838184 TI - Childhood sexual abuse: guidelines for evaluation. PMID- 3838185 TI - A point-addressable transfer system for automated sampling, feeding, and expansion of hybridoma cultures. AB - A Dynatech Autoprep liquid sampling system has been modified to perform fully automated aseptic sampling, feeding, and expansion of hybridoma cultures in standard 96- and 24-well culture plates. The system is controlled by an Apple IIe computer, and uses a single teflon probe to transfer culture medium from randomly located wells to EIA plates and deliver fresh medium to the sampled wells. An 'expansion mode' allows suspension of cells for transfer to another plate. The sampling probe may be washed with sterile medium, buffer, or water between each transfer. Any combination of up to 6 assay plates, sterile growth plates, and expansion plates may be operated on at one time, and each transaction is recorded on a floppy disk file. Experiments with various hybridoma cultures indicated that transfers were reproducible, sterility was maintained, and the washing procedure reduced cross-contamination of cultures with other cells or antibodies to negligible levels. The APPLE BASIC computer programs which perform the functions and record the transactions are described in the paper and the Appendix, and are available upon request. PMID- 3838186 TI - Isolation and characterization of monoclonal antibody-resistant mutants of Newcastle disease virus. AB - Neutralizing monoclonal antibodies incorporated into plaque assay overlay medium were used to select antibody-resistant (AbR) mutants of both the Herts (using antifusion protein monoclonal 481) and Beaudette C (using anti-haemagglutinin neuraminidase protein monoclonal 445) strains of Newcastle disease virus at the permissive temperature of 34 degrees C. Certain of the Herts, but none of the Beaudette C, AbR mutants were also temperature-sensitive (ts-) and failed to form plaques at the non-permissive temperature of 41.5 degrees C. [35S]Methionine labelled proteins from chick embryo fibroblasts infected with wild-type, ts+ AbR and ts- AbR virus when separated by two-dimensional polyacrylamide gel electrophoresis revealed a variety of changes in the isoelectric point of the fusion protein F (using monoclonal 481) and the haemagglutinin-neuraminidase protein HN (using monoclonal 445). The ts+ 'revertants' of ts- AbR mutants remained AbR and also showed changed isoelectric points in the F protein. PMID- 3838187 TI - Megestrol acetate therapy for advanced breast cancer. AB - One hundred twenty-four patients with metastatic breast cancer were treated with 40 mg of megestrol acetate four times daily. Complete responses (CR) or partial responses (PR) were seen in 29 patients (23%). CR, PR, or stable disease (S) was seen in 80 patients (65%). The median duration of response was 22 months for CR and PR and ten months for S. A significantly higher response rate (CR + PR) was seen in estrogen-receptor-positive (ER-positive) patients (26%) and in patients who had not received prior therapy (39%). A significant relationship to response could not be established for menopausal status, progesterone-receptor (PrR) status, dominant site of disease, or prior administration of chemotherapy. Median survival was 66+ months for responders, 35 months for patients with stable disease, and 9 months for nonresponders. These differences are all statistically significant (P less than .001). Toxicity was minimal, and side effects consisted primarily of weight gain, which was seen in 18 patients (14.5%). Megestrol acetate can provide effective palliation in patients with advanced breast cancer. PMID- 3838188 TI - Extended versus involved fields irradiation combined with MOPP chemotherapy in early clinical stages of Hodgkin's disease. AB - From 1976 to 1981, 335 patients with untreated Hodgkin's disease, clinical stages I, II, and IIIA, have been treated by MOPP (nitrogen mustard, vincristine, procarbazine, prednisone) chemotherapy, three to six cycles according to the prognostic factors, combined with radiotherapy. Irradiation was always performed after the first three cycles of chemotherapy, and was randomized between extensive radiotherapy, ie, mantle and paraaortic areas for supradiaphragmatic presentations, and radiotherapy restricted to the involved areas. No significant difference was observed between the two randomized branches for the disease-free survival (86% after six years in the involved field branch v 90% in the extended field branch), and none for the overall survival. Most of the relapses occurred in nonirradiated areas in the first group, and in irradiated areas in the second. Relapses were especially frequent in the IIE stages with pulmonary extension; extranodal relapses occurred with osseous and cutaneous localizations. Two cases of secondary leukemia were observed after three- or six-cycle MOPP plus radiotherapy limited to the involved areas. PMID- 3838189 TI - Increased morbidity in low-birth-weight survivors with severe retrolental fibroplasia. AB - Fourteen (2.2%) of 645 survivors with birth weight less than or equal to 1500 gm cared for in the Special Care Nursery between 1975 and 1981 were identified as having stage III-IV retrolental fibroplasia (RLF) in one or both eyes. These 14 survivors and 14 controls matched for birth weight have been observed for 2 to 7 years. There were no differences between survivors with RLF and controls in birth weight, gestation, multiple neonatal risk factors, or Hollingshead socioeconomic status. The only significant difference was in prolonged O2 requirements (greater than 2 weeks) (13 of 14 patients vs 7 of 14 control infants (P less than 0.025) and prolonged assisted ventilation requirements (21 +/- 15 for RLF vs 6 +/- 10 days for control infants, P less than 0.05). Follow-up assessments showed that the RLF survivors had a significantly higher incidence of neurologic abnormality, lower developmental quotients, increased requirements for special education, increased number of hospitalizations for illness, and more maternal stress as observed in the mother's adapted Life Experience Survey. We conclude that low birth-weight infants with stage III-IV RLF are at a higher risk for neurodevelopmental problems and that their families are in need of comprehensive support services. PMID- 3838190 TI - On the pharmacology of L-645,151: a topically effective ocular hypotensive carbonic anhydrase inhibitor. AB - L-645,151 [(2-sulfamoyl-6-benzothiazolyl)-2,2-dimethylpropionate] is the O pivaloyl ester of L-643,799 (6-hydroxybenzothiazole-2-sulfonamide), topically administered L-645,151 being a substrate for ocular esterases with the resultant liberation of the active moiety, L-643,799, during penetration of the ocular surface. The minimum concentrations of topically administered suspensions (1 drop of 50 microliters into both eyes) of L-645,151, L-643,799, dichlorphenamide and methazolamide significantly lowering the elevated intraocular pressure (IOP) of the alpha-chymotrypsinized rabbit eye were 0.25, 2, 10 and 5%, respectively. IOP was not significantly decreased by 10% suspensions of acetazolamide or ethoxzolamide. The IOP lowering action of L-645,151 was local as the unilateral instillation of L-645,151 (0.25%) into the contralateral eye was devoid of effect in alpha-chymotrypsinized rabbits. L-645,151 (2%) decreased aqueous humor inflow in both the conscious rabbit and the anesthetized dog. Outflow facility in the conscious rabbit was unaltered by a 10% suspension of L-645,151. Low peak levels (0.52 microgram/g) of L-643,799 were present in rabbit renal cortex after the instillation of L-645,151 (2%) into both eyes; this treatment did not induce diuresis in the conscious rabbit. The corresponding maximum concentration in the iris + ciliary body was 4.01 micrograms/g. These preclinical studies reveal that L-645,151 is the most potent, topically effective ocular hypotensive carbonic anhydrase inhibitor described to date. PMID- 3838191 TI - Effects of metabolic substrates and ionic environment on in-vitro activation of delayed implanting mouse blastocysts. AB - The possibility that the embryonic diapause associated with delayed implantation in mice is maintained by limitation of an essential amino acid, energy substrate or concentration of ions was examined by comparing the rates of DNA synthesis in delayed implanting embryos that were 'reactivated' by incubation in 'complete' medium or in one of several specially formulated 'deficient' media. It was found, in agreement with earlier observations, that an increase in the rate of DNA synthesis could be detected within 12 h and continued through 72 h in complete medium. An identical pattern was found when embryos were incubated in medium deficient in amino acids and vitamins. Similar patterns of activation were observed in the absence of all metabolizable substrates, a drastically reduced concentration of Na+, and even in a medium consisting only of 25 mM-bicarbonate buffer, NaCl and KCl. The embryos incubated in the more drastically deficient media appeared to be damaged after 18-24 h. Nevertheless, the observation that the rate of DNA synthesis did not remain depressed suggests that such deficiencies are not the means by which embryonic dormancy is maintained in utero. PMID- 3838193 TI - Sequence homology within the morbilliviruses. AB - Double-stranded cDNA synthesized from total polyadenylate-containing mRNA extracted from monkey kidney cells infected with canine distemper virus (CDV) was cloned into the PstI site of Escherichia coli plasmid pBR322. Clones containing CDV DNA were identified by hybridization to a CDV-specific 32P-labeled cDNA. A cDNA clone containing an insert 1,700 base pairs (CDV 364) has been identified as the reverse transcript of the mRNA coding for the nucleocapsid protein. The size of the mRNA species complementary to this insert is 1,850 nucleotides, as determined by the Northern technique. Hybridization experiments and heteroduplex mapping indicated homology between the central region of the CDV and measles virus nucleocapsid gene. The completion of the nucleotide sequence analysis of the measles virus gene allowed the reconstruction of the entire coding region of the measles virus gene and a comparison with the counterpart sequence of CDV. This comparison delineated three regions: (i) a region of high homology (nucleotides 501 to 1215), in which 77% of the nucleotides and 88% of the encoded amino acids are identical; (ii) a region of moderate homology at the 5' end of the message (nucleotides 1 to 500), in which 59% of the nucleotides and 66% of the encoded amino acids are identical; (iii) a region of little or no homology (nucleotides 1216 to 1625) near the 3' end of the message. PMID- 3838192 TI - Molecular cloning of the six mRNA species of infectious hematopoietic necrosis virus, a fish rhabdovirus, and gene order determination by R-loop mapping. AB - Plasmids carrying cDNA sequences to the mRNA species of infectious hematopoietic necrosis virus were constructed and cloned into Escherichia coli. Characterization of 21 cloned plasmids by hybridization to mRNA blots identified sets of plasmids with homology to each of the six viral mRNA species. R-loop mapping with these cDNA plasmids determined that the gene order on the infectious hematopoietic necrosis virus genome is (3')N-M1-M2-G-NV-L(5'). PMID- 3838195 TI - Adynamic ileus following induced hypotension. PMID- 3838194 TI - Cloning and characterization of DNA complementary to the canine distemper virus mRNA encoding matrix, phosphoprotein, and nucleocapsid protein. AB - Double-stranded cDNA synthesized from total polyadenylate-containing mRNA, extracted from monkey kidney cells infected with canine distemper virus (CDV), has been cloned into the PstI site of Escherichia coli plasmid pBR322. Clones containing canine distemper virus DNA were identified by hybridization to a canine distemper virus-specific, 32P-labeled cDNA. Four specific clones containing different classes of sequences have been identified. The cloned plasmids contain inserts of 800 (clone 44-80), 960 (clone 74-16), 1,700 (clone 364), and 950 (clone 40-9) base pairs. The sizes of the mRNA species complementary to these inserts are 1,500, 1,850, 1,850 and 2,500 nucleotides, respectively, as determined by the Northern technique. Three of the cloned DNA fragments were further identified as the reverse transcripts of the mRNA coding for the matrix, phosphoprotein, and nucleocapsid protein of CDV. PMID- 3838196 TI - A quaternary anti-cholinesterase probe for determining the integrity of the blood -brain barrier. AB - 7-(Methylethoxyphosphinyloxy)-1-methyl quinolinium iodide (MEPQ), a new quaternary anti-cholinesterase (anti-ChE) compound was prepared and evaluated as a potential probe for assessing changes in the blood-brain barrier (B-BB) permeability. MEPQ was found to be 170 times more potent in its cholinesterase inhibitory activity than phospholine iodide, a previously reported anti-ChE probe in B-BB research. In rats and mice with impaired B-BB induced by osmotic opening, MEPQ readily penetrated through the damaged site as demonstrated by considerable reduction of ChE activity. In controls, brain ChE activity remained unaffected. It is suggested that MEPQ is a useful probe for both qualitative (histological staining) and quantitative (brain homogenated) assessment of permeability changes in the B-BB. PMID- 3838198 TI - [Set of programs for radiotherapy planning, executed on the SM-4 computer]. AB - The author described a SM-4 computer-assisted complex of programmes. It includes programmes for the calculation of the dose fields of gamma-beam therapy and intracavitary radiation sources, the optimization of irradiation conditions and a number of service programmes. PMID- 3838197 TI - Phospholipid composition of guinea pig lung lavage. AB - Phospholipids from guinea pig lung lavage were analyzed. The total lavage phospholipid content was 2.65 + 0.67 mg per gram of lung, which accounted for 85% of the total lipids in lung wash. Phosphatidylcholine (PC) accounted for over 60% of the total phospholipids. The other phospholipid fractions, in order of predominance, were phosphatidylinositol (PI), phosphatidylserine (PS), sphingomyelin (SPH), phosphatidylethanolamine (PE), phosphatidylglycerol (PG) and lysophosphatidyl-choline (LPC). Disaturated phosphatidylcholine (DSPC) comprised 80% of the total PC, and it contained mostly palmitic acid. The DSPC content of the lung lavage fluid per square meter of alveolar surface area was 5.76 +/- 0.42 mg. PMID- 3838199 TI - Cytoprotective agents and ulcer relapse. AB - This study establishes that real differences between relapse rates exist, and confirmed previous observations by Pounder et al. that relapse rates influence clinical outcomes in ulcer populations. The results make it clear that the way in which a drug influences relapse is an important determinant of therapeutic efficiency, additional to the requirement for healing efficiency. Cytoprotective agents as a group appear to be associated with lower relapse rates than cimetidine. It is not known whether the differences are peculiar to cimetidine, specific to the blockade of H2-histamine receptors, or whether they relate to the process of inhibition of secretory processes generally. Clearly, further comparisons are needed; however, conventional clinical trials are not designed to provide the necessary information. For the healing of peptic ulcers, lower relapse rates appear to provide therapeutic advantage to members of the cytoprotective group when compared with agents acting via anti-secretory mechanisms, in addition to that associated with the local (non-systemic) mode of action where applicable. PMID- 3838200 TI - Molecular tinkerings that tailor the acetylcholine receptor. PMID- 3838201 TI - Location of functional regions of acetylcholine receptor alpha-subunit by site directed mutagenesis. AB - The availability of cloned cDNAs encoding the four subunits of the Torpedo acetylcholine receptor, which can be expressed to make functional receptors in Xenopus oocytes, has made possible a detailed investigation of the functions of the different structural components of the receptor. The functional analysis of receptors with alpha-subunits altered at specific sites by site-directed mutagenesis of the cDNA has allowed the location of specific regions of the alpha subunit molecule involved in acetylcholine binding and forming a transmembrane ionic channel. PMID- 3838202 TI - Structural identification of beta- and gamma-human atrial natriuretic polypeptides. AB - Atrial natriuretic polypeptides (ANPs) of varying chain length have been identified recently in human and rat atrial tissue. Their potent natriuretic diuretic activities indicate their key role in the regulation of extracellular fluid volume and electrolyte balance. Furthermore, human and rat cDNAs encoding their precursor have been cloned and identified. Natriuretic-diuretic activity in human atrial extract comprises three distinct components (alpha, relative molecular mass (Mr) approximately 3,000; beta, Mr approximately 6,000; gamma, Mr approximately 13,000). However, only the 3,000-Mr peptide, alpha-human atrial polypeptide (alpha-hANP), comprising 28 amino acids, has so far been identified. We report here the purification and sequence analysis of two novel hANPs of higher Mr, beta- and gamma-hANP, both of which exhibit natriuretic and hypotensive activity. gamma-hANP, composed of 126 amino acids, carries the alpha hANP sequence at its carboxy terminus. The identification of gamma-hANP reveals that the peptide, being the largest form of hANP, is processed directly from a 151-residue precursor by removal of a 26-residue signal peptide. In contrast, beta-hANP (56 residues) comprises an anti-parallel dimer of alpha-hANP; such a dimeric peptide possessing bioactivity has never been found in the tissue as an endogenous entity. PMID- 3838203 TI - Suppression of the normal mouse c-myc oncogene in human lymphoma cells. AB - In Burkitt's lymphoma, which carries the t(8;14) chromosome translocation, the c myc oncogene normally located on band q24 of human chromosome 8 (refs 1-3) translocates to the heavy-chain locus on chromosome 14 (refs 1, 4, 5); this results in transcriptional deregulation of the translocated c-myc oncogene, which is transcribed constitutively at elevated levels, while the normal c-myc oncogene on the uninvolved chromosome 8 is either silent or expressed at very low levels (A.ar-R. and C.M.C., unpublished results). We have now introduced the active c myc oncogene of proliferating mouse spleen cells into human lymphoma cells carrying the t(8;14) chromosome translocation by hydridization, and have examined the hybrids for expression of the human and murine c-myc oncogene. The results of this analysis, reported here, indicate that the active mouse myc gene is shut off at the transcriptional level in the human lymphoma cells, implying that human B cells at the stage of differentiation of lymphoma cells used in this study are nonpermissive for normal c-myc transcription. PMID- 3838204 TI - [Home and personal computers, an introduction]. PMID- 3838205 TI - [Look before you leap; general problems in the switch-over from kardex to data base]. PMID- 3838206 TI - Sensitivity and specificity. PMID- 3838207 TI - Surfactant treatment and ventilation by high frequency oscillation in premature newborn rabbits: effect on survival, lung aeration, and bronchiolar epithelial lesions. AB - Premature rabbit neonates delivered at gestational age 27 days were ventilated by high frequency oscillation for 60 min with 100% O2, using a frequency of 7-8 Hz, 50% inspiration time and mean airway pressures of 6-8 cm H2O. Twenty-five animals received bovine surfactant (2 ml/kg body weight; phospholipid concentration 85 100 mg/ml) in the tracheal cannula before onset of ventilation, and 22 littermates served as controls. In the surfactant-treated group, average tidal volume was about 10 times larger than in controls, yet only 15% of the estimated dead space. Judged from ECG recordings, the treated animals also had a much higher survival rate: 96 versus 5% (p less than 0.001). Morphometrically, mean alveolar volume density was increased in the surfactant-treated animals in comparison with controls: 0.65 +/- 0.08 versus 0.37 +/- 0.08 (means +/- SD; p less than 0.005). Bronchiolar epithelial lesions were found in all control animals and were severe in almost all cases. In the surfactant-treated group, epithelial lesions were absent in 12, mild in 11, and fairly prominent in two animals. We conclude that after treatment with surfactant, the premature newborn rabbit can be ventilated adequately with high frequency oscillation at comparatively low mean airway pressures and that surfactant replacement effectively reduces the development of epithelial lesions in conducting airways during high frequency oscillation. PMID- 3838209 TI - Advantages of the nomogram. PMID- 3838208 TI - Tin protoporphyrin inhibits carbon monoxide production in adult mice. AB - We studied the effect of tin protoporphyrin, a potent inhibitor of heme oxygenase (EC 1.14.99.3), on carbon monoxide (CO) production in mature mice. Measurements of CO production provide a sensitive, noninvasive means of quantitating heme catabolism. CO accumulation in the gas space of closed chambers was decreased by about 25% for mice treated with two 50 nmol/g doses of tin protoporphyrin as compared to saline-treated controls. Calculated rates of CO production were 0.28 +/- 0.07 and 0.40 +/- 0.05 nmol X g-1 X h-1 for mice injected with tin protoporphyrin and saline, respectively (p less than 0.01). When hemin (125 nmol/g) was administered to simulate hemolysis, CO production increased markedly in both saline- and tin protoporphyrin-treated mice. However, the rate of CO production in tin protoporphyrin-treated mice was only 44% that of saline-treated animals (p less than 0.0001). These studies demonstrate that tin protoporphyrin inhibits heme catabolism in both the basal- and heme-loaded states and confirm that this inhibition is at the heme oxygenase step in the heme to bilirubin pathway. PMID- 3838210 TI - [Intrathecal morphine as a postsurgical analgesic. 4 cases]. PMID- 3838211 TI - The calmodulin-dependent phosphorylation of cardiac myosin. AB - Cardiac myosin light chains are phosphorylated in vivo and in vitro. The enzyme myosin light-chain kinase, has been purified and found to be very specific for cardiac myosin light chains. Experiments with skinned cardiac fibers suggest that phosphorylation of myosin light chain-2-decreases ATP consumption, presumably by lowering the cross-bridge cycle. These results are discussed in this chapter. PMID- 3838212 TI - [Routine determination of 1,25-hydroxyvitamin D, clinically the most important metabolite of vitamin D, in human plasma]. PMID- 3838213 TI - The functional replacement of the ear. PMID- 3838214 TI - Information as a "cure" for cancer. PMID- 3838215 TI - [Theoretical substantiation of the selection of hearing aids]. PMID- 3838216 TI - A comparison of the effects of propylthiouracil and methimazol on circulating thyroid hormones and various measures of peripheral thyroid hormone effects in thyrotoxic patients. AB - Two groups of patients with newly diagnosed thyrotoxicosis were treated with propylthiouracil (PTU) 400 mg every 6 h for 4 days followed by methimazol (MMI) 40 mg every 6 h for 4 days or by MMI for 4 days followed by PTU for 4 days. The shift from MMI to PTU induced a considerable decrease in serum T3 while shift from PTU to MMI led to an increase in serum T3. Serum T4 decreased gradually during the whole treatment period. The opposite variations in serum T3 were accompanied by similar opposite variations in basal metabolic rate (BMR) (P less than 0.001). Hence the rapid variations in serum T3 which can be induced by PTU in thyrotoxic patients, are followed by rapid alterations in the thyrotoxic state as evaluated by BMR. PMID- 3838217 TI - Dietary manipulation of postprandial colonic lactose fermentation: I. Effect of solid foods in a meal. AB - The effect of adding solid foods--cornflakes, banana and hard-boiled egg--to a meal with 360 ml of intact milk containing 18 g of lactose was investigated in 13 lactose-malabsorbers and 10 lactose-absorbers chosen from 36 Guatemalan adults screened for their capacity to digest and absorb completely the lactose in this volume of milk. A six-hour hydrogen breath test was used as the index of carbohydrate absorption. Minimal breath H2 was excreted by lactose-absorbers with either the intact milk alone, the intact milk with solid foods, or lactose prehydrolyzed milk with solids. In lactose-malabsorbers, however, the 6-h excretion of H2 with intact milk plus solid food was intermediary between milk alone and prehydrolyzed milk with solids. A relative net reduction of 47% in lactose malabsorption was produced by adding food, and the peak-rise in breath H2 was delayed by 2 hours. A physiological consequence of taking solid foods along with milk is a slower rate of colonic fermentation, and this may be the basis for reducing gastro-intestinal symptoms in lactose-intolerant malabsorbers. PMID- 3838219 TI - An automated visual acuity testing computer program using the Apple II system. AB - We developed an automated visual acuity testing program that uses an E optotype with surrounding confusion bars. The computer software program runs on Apple II equipment and a black-and-white monitor with a five-inch screen. The program is available in response box and joystick versions. The test is suitable for children older than 31/2 to 4 years of age and for adults. A t-test on the same floppy disk as the visual acuity programs is used to test the probability that the differences in test results are greater than chance. Visual acuities of 20 normal subjects were reduced by means of plus lenses. Test-retest acuity correlation coefficients were similar for letter charts and computer-generated E optotypes, suggesting approximately equal reliability under the test conditions employed. Visual acuities of 12 amblyopic eyes were obtained by a Ferris-type letter chart and computer-generated E optotypes. The correlation coefficient was +0.93, suggesting similar test results by these two methods. PMID- 3838218 TI - The effect of milk supplements on calcium metabolism, bone metabolism and calcium balance. AB - Twenty-two healthy postmenopausal women were divided into two groups, one group of 13 received milk supplementation of 24 oz per day and the other group of 9 controls received no intervention during two years of observation. Extensive inpatient metabolic balance and radiocalcium kinetic studies were performed at the beginning and at the end of one year of observation. In the milk supplement group, fractional calcium absorption (x +/- SD) decreased from .243 +/- .058 to .176 +/- .058, absorbed calcium increased from .159 +/- .052 gm/d to .248 +/- .063 gm/d, urine calcium increased from .117 +/- .034 gm/d to .146 +/- .027 gm/d, bone accretion decreased from .385 +/- .079 gm/d to .326 +/- .063 gm/d, bone resorption decreased from .446 +/- .098 gm/d to .342 +/- .106 gm/d and endogenous fecal calcium increased from .105 +/- .023 gm/d to .120 +/- .021 gm/d. All these changes were significant within the group and the mean changes were significantly different from the mean changes observed in the control group. Calcium balance in the milk supplemented group improved from -.061 +/- .056 gm/d to -.017 gm/d +/- .073 gm/d. Predicted changes in calcium and bone metabolism held true except that the suppression of bone remodeling was less than previously found using calcium carbonate supplements. We conclude that milk and milk products can be recommended as sources of calcium, that data on the effects of increasing calcium intake from other sources can be applied to milk and that milk may offer an advantage because it does not suppress bone remodeling as severely as calcium carbonate. PMID- 3838221 TI - 1,25(OH)2D3 binding along the rat nephron: autoradiographic study in isolated tubular segments. AB - 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] binding sites were studied along the nephron of rats. The animals were pretreated with the diphosphonate EHDP at doses that inhibit the endogenous production of 1,25(OH)2D3. A dry film autoradiographic technique was applied to tubular segments isolated by microdissection from kidneys incubated in vitro with various concentrations (0.2 12 nM) of [3H]1,25(OH)2D3 in the presence or absence of an excess unlabeled hormone (X200) in order to determine specific binding. Total, nonspecific, and specific labeling were quantified by silver grain counting over cytoplasmic and nuclear areas. Specific nuclear labeling appeared in the cortical ascending limb and papillary collecting tubule at 1 nM. In the distal tubule and, to a lesser extent, in the cortical collecting tubule a specific nuclear labeling was also present, but only at higher concentrations. No specific nuclear labeling was detected in the proximal tubule. All along the nephron, a significant and nonspecific labeling was observed in the cytoplasm, either alone or superimposed over the specific nuclear labeling. In conclusion 1,25(OH)2D3 specific binding sites appear to be localized mainly in the cortical ascending limb of the loop of Henle, in the distal and cortical collecting duct, and in the papillary collecting duct. PMID- 3838220 TI - Lectin binding in membranoproliferative glomerulonephritis. Evidence for N acetylglucosamine in dense intramembranous deposits. AB - Type II membranoproliferative glomerulonephritis (MPGN-II) is characterized by electron-dense intramembranous deposits (DIMD) in the basal laminae of the kidney. These deposits selectively bind the lectin wheat germ agglutinin (WGA) or its succinylated derivative. In renal tissue samples from normal controls, Type I membranoproliferative glomerulonephritis, and several other renal diseases, only a normal pattern of WGA binding was observed and no membrane-oriented deposits reacted with WGA. Additional attempts to stain the DIMD with any of eight other lectins or eight antisera to renal antigens were uniformly unsuccessful. Discrete WGA reactivity indicates that the deposits contain appreciable quantities of internally linked N-acetylglucosamine and may also provide a valuable adjunct in making the histologic diagnosis of MPGN-II. PMID- 3838222 TI - Relationship between neuroleptic malignant syndrome and malignant hyperthermia. PMID- 3838223 TI - Studies on the mode of action of oxamniquine and related schistosomicidal drugs. AB - Adult Schistosoma mansoni were incubated for 1 hour in vitro with various drugs and then returned into the mesenteric veins of permissive animal hosts. Survival of schistosomes was assessed 3-4 weeks later by portal perfusion. Under these conditions, oxamniquine and hycanthone proved effective in killing S. mansoni, whereas UK-3883, lucanthone and lucanthone-4-desmethyl had no lethal activity. The same drugs which were schistosomicidal in vitro also persistently inhibited DNA, RNA, and protein synthesis in S. mansoni, whereas they were only transiently inhibitory against Schistosoma japonicum, against hycanthone-resistant S. mansoni and against immature worms. When drugs were administered in vivo to infected mice and the synthesis of macromolecules was assayed in vitro on worms obtained 1 or 3 days after treatment, not only oxamniquine and hycanthone, but also UK-3883 and lucanthone, proved effective in inhibiting the synthesis of macromolecules in sensitive--but not in resistant--S. mansoni. It is suggested that oxamniquine, like hycanthone, may exert its schistosomicidal activity by inhibiting nucleic acid synthesis in the parasite. PMID- 3838224 TI - Use of atracurium in a patient susceptible to malignant hyperthermia. PMID- 3838225 TI - Cochlear implant for tinnitus. Case reports. AB - Various forms of electrical stimulation are effective in reducing tinnitus in some patients. Our experience with cochlear implant patients who have preimplant tinnitus demonstrated that about half experienced relief after the implant. We present five patients who underwent cochlear implant exclusively for tinnitus relief. Results are mixed with only one definite success. Electrical stimulation and our current research efforts are discussed. PMID- 3838226 TI - Banded intracochlear electrode array: evaluation of insertion trauma in human temporal bones. AB - A banded free-fit scala tympani array was inserted into the basal turn of nine human cochleas to evaluate the trauma produced by the procedure. These nine cochleas, together with five nonimplanted controls, were serially sectioned and examined microscopically for damage to the membranous labyrinth, in particular the spiral ligament, the basilar and Reissner's membranes, the stria vascularis, and the osseous spiral lamina. The severity and location of any trauma along the cochlear spiral were recorded. The results indicate that the insertion of the banded scala tympani array resulted in minimal mechanical damage, occurring primarily to a localized region of the spiral ligament. This would not result in significant neural degeneration, and therefore would not compromise the efficacy of the multichannel cochlear prosthesis. PMID- 3838227 TI - Reimplantation of a molded scala tympani electrode: impact on psychophysical and speech discrimination abilities. AB - Revision surgery was successfully performed on two Vienna cochlear implant patients. Twenty months and 40 months, respectively, after initial insertion into the cochleas of two bilaterally deaf patients, electrodes were removed from the scala tympanis and replaced by electrodes of the same design. Psychophysical and speech data gathered before and after the revision surgery were compared. These were thresholds, loudness scalings, amplitude difference limens, pitch scalings, frequency difference limens, and speech tests in the "stimulation only" modality. No negative changes were found. The data available demonstrate a continuous improvement in performance over many months of practice with the sound processor. This development was not impeded by the revision surgery. Thus, it was demonstrated that the removal and replacement of a molded scala tympani electrode is feasible. PMID- 3838228 TI - Humoral hypercalcemia in Hodgkin's disease. Association with elevated 1,25 dihydroxycholecalciferol levels and subperiosteal bone resorption. AB - A 58-year-old man was initially seen with fatigue and weight loss. Laboratory examination detected hypercalcemia, elevated 1,25-dihydroxycholecalciferol levels, low parathyroid hormone (PTH) concentrations, and subperiosteal bone resorption. The patient underwent subtotal parathyroidectomy for presumed hyperparathyroidism, but serum calcium and 1,25-dihydroxycholecalciferol levels remained elevated following surgery. Search for another cause of the hypercalcemia disclosed enlarged para-aortic lymph nodes, biopsy specimens of which demonstrated Hodgkin's disease. After treatment of the patient with two cycles of chemotherapy with mechlorethamine hydrochloride, vincristine sulfate, procarbazine hydrochloride, and prednisone, serum calcium, 1,25 dihydroxycholecalciferol, and PTH levels normalized. We speculate that the humoral hypercalcemia in this patient resulted from tumor production of 1,25 dihydroxycholecalciferol. PMID- 3838229 TI - Staging for cancer. New developments and importance to pathology. AB - Important to both the physician and patient, cancer staging is an agreed upon classification for defining the extent of a malignant tumor. The present staging system is based principally on the anatomic spread of the primary tumor beyond three landmarks. The first landmark is the site of the primary tumor, usually referred to as topography, the second landmark is the regional lymph nodes or adjacent anatomic structures, and the third landmark refers to distant metastases. These three landmarks define the topographic, lymph node, and metastatic system of staging that has been promulgated by the International Union Against Cancer and the American Joint Committee on Cancer in the United States. Staging systems have been developed for all anatomic sites including pediatric tumors. In many cases, the key physician, in providing the necessary information for accurate staging, is the pathologist. PMID- 3838230 TI - Surgical pathology accessioning and management on a multiuser hard disk microcomputer system. AB - We have developed an inexpensive, microcomputer-based, multiuser hard disk system for surgical pathology that uses a commercially available word processor and data base manager, linked together by several BASIC programs written by us. System functions include keyboard input of patient demographic data and specimen information, word processing with the generation of preliminary and final surgical reports, on-line access to the surgical pathology data base, generation of daily secretarial and histology log sheets, and computer-assisted SNOMED coding. Successful implementation of this system has produced greater efficiency and productivity in the surgical pathology department at a reasonable cost. PMID- 3838231 TI - The relationship of histologic and clinical factors in laryngeal papillomatosis. AB - Laryngeal papillomatosis is a disease that can lead to many surgical procedures, especially in children, and is potentially lethal. In this study, we reviewed 83 cases that yielded 902 separate laryngoscopy specimens to determine if any clinical or histologic findings were prognostic. "Juvenile" (n = 73) and "adult" (n = 10) cases were classified according to the number of separate lesions and the number of recurrences, but not necessarily according to age. Four prognostic indicators were constructed for the juvenile group and were analyzed by linear regression. Three new microscopic classifications were used: papillary, acanthomatous, and angiokeratotic. In juvenile cases, the last two categories appeared to be somewhat prognostic, along with several other factors. Some histopathologic findings contradicted classic descriptions. Differences in clinical manifestation and similarities in histopathology may suggest differential responses to the same causal agent. PMID- 3838232 TI - Pulmonary artery sarcomas. A review and report of a case. AB - We examined a case of primary pulmonary artery sarcoma and reviewed 45 cases that we found previously reported in the English literature, with particular attention given to the pathologic features. These sarcomas involve the pulmonary arterial trunk, left and right main pulmonary arteries, pulmonary valve, and right ventricular outflow tract. They have prominent intravascular growth along the arterial intima. Lung involvement commonly occurs by direct extension through the pulmonary vasculature or by distant metastases. These sarcomas contain a variety of heterologous components and areas of bone, cartilage, and fibrous tissue may be remarkably well-differentiated. Management of these sarcomas will be aided by an understanding of their biologic behavior and pathologic features. PMID- 3838233 TI - Epithelioid hemangioma of the penis. A rare and distinctive vascular lesion. AB - Two patients, aged 36 and 47 years, respectively, had indurated subcutaneous penile nodules that were treated by local excision. Histologically, the lesions were characterized by cords and nests of plump epithelioid cells separated by a loose stroma containing numerous lymphocytes and eosinophils. Light microscopy identified definite vasoformative areas and solid regions with cytoplasmic vacuolization and nuclear atypia. Ultrastructural studies and immunohistochemical analysis for factor VIII-related antigen and Ulex europaeus agglutinin I demonstrated that the lesions were of endothelial origin. After excision of the nodules, the two patients are free of disease 5 1/2 and 6 1/2 years later, respectively. To our knowledge, a review of the literature produced only one similar case. These unusual vascular lesions, of undetermined cause, are proliferations of endothelial cells exhibiting an epithelioid structure that should be considered benign and treated locally. PMID- 3838234 TI - Mucin histochemistry of cystitis glandularis and primary adenocarcinoma of the urinary bladder. AB - We describe the histochemical properties of mucin in three cases of cystitis glandularis affecting the urinary bladder. Of particular importance is the positive staining reaction that was obtained with the periodate borohydride/potassium hydroxide/PAS (PB/KOH/PAS) technique, indicating the presence of O-acetylated sialic acids. This reaction has been regarded as unique to the epithelial mucins in the normal terminal ileum and large intestine. Therefore, cystitis glandularis represents a true mucous metaplasia of large intestinal type. A case of primary adenovillous carcinoma of the bladder associated with cystitis glandularis also produced O-acetylated sialomucin, whereas a primary adenocarcinoma of urachal origin did not. The demonstration of O-acetylated sialic acid producing glandular epithelium in the bladder cannot be assumed to represent a metastasis from a colorectal cancer. The PB/KOH/PAS staining technique may provide a means of distinguishing between primary adenovillous and primary urachal carcinoma of the bladder. PMID- 3838235 TI - Giant intracranial Masson's hemangioma v chronic subdural hematoma. PMID- 3838236 TI - Severe alterations of red blood cells from the vessels of colorectal tumors. AB - The RBCs from vessels supplying the tumors of 14 patients with colorectal carcinoma were examined with the scanning electron microscope. In all of them a great variety of alterations in the shape and the cell membrane were found. Erythrocytes from the vessels of healthy colonic tissue of the patients were found to have a normal appearance. Since fibrin thrombi were present in a few vessels of only six patients, the possibility that the alterations were due to mechanical trauma was not likely. This observation may serve as an additional explanation for the anemia observed in patients with colorectal carcinoma. PMID- 3838237 TI - Hepatic lipogranulomatosis simulating veno-occlusive disease of the liver. AB - Two cases of unsuspected veno-occlusive disease of the liver were discovered at autopsy. Nearly all central veins and sublobular venules were occluded by lipogranulomas consisting of lipid-laden macrophages, epithelioid histiocytes, giant cells, fibroblasts, lymphocytes, and deposits of collagen. The process extended into the sublobular hepatic venules. Large hepatic veins were uninvolved. Known causes of veno-occlusive disease were ruled out, and the cause of the present cases is unknown. PMID- 3838238 TI - Xanthogranulomatous endometritis associated with endometrial carcinoma. AB - We studied a case of xanthogranulomatous (XG) endometritis associated with endometrial adenocarcinoma. Isolated XG endometritis is a rare entity that may mimic carcinoma as a consequence of the replacement of the endometrium and the invasion of the myometrium by friable yellowish tissue composed of foamy histiocytes. To our knowledge, it has not previously been described as coexisting with a carcinoma. The XG reaction is characterized by pigment-laden foamy cells. Electron microscopy demonstrated that the foamy cells belong to the macrophage/histiocyte series and are not endometrial stromal cells. Histochemical studies revealed the pigment to be composed of hemosiderin and lipofuscin. The absence of calcispherites or a uniform immunoperoxidase staining reaction for alpha 1-antitrypsin excluded the diagnosis of malacoplakia. We have postulated that XG endometritis has a similar etiopathogenesis to XG pyelonephritis and XG cholecystitis. It is a rare morphologic expression of the clinical syndrome of benign senile pyometrium. PMID- 3838239 TI - Systemic mastocytosis with portal hypertension. Autopsy findings and ultrastructural study of the liver. AB - Systemic mastocytosis is a rare cause of portal hypertension with only two previously reported cases to our knowledge. A 51-year-old man who was seen with intractable diarrhea and abdominal distention was found to have this combination at autopsy. At autopsy the liver showed bridging portal fibrosis. Subendothelial collagen deposition was demonstrated ultrastructurally. We present the possible mechanisms of portal hypertension in systemic mastocytosis. PMID- 3838240 TI - Papillomatosis of the gallbladder associated with metachromatic leukodystrophy. AB - A 9-year-old boy with metachromatic leukodystrophy (MLD) was found to have diffuse papillomatosis of the gallbladder that was virtually obliterating the lumen of the gallbladder. To our knowledge, two other examples of this lesion have been reported previously in MLD. PMID- 3838241 TI - Vascular involvement in type 3 neuronopathic Gaucher's disease. AB - A 6 3/4-year-old boy with neuronopathic Gaucher's disease died unexpectedly. Autopsy demonstrated unusual vascular findings with the presence of Gaucher's cells and intimal-medial fibrosis in the ascending aorta and widespread acute hemorrhagic necrosis of the left ventricular myocardium. The combination of eccentric, intimal fibrosis of coronary arteries, left ventricular hypertrophy, pulmonary involvement, and anemia probably accounted for this child's death. PMID- 3838242 TI - Use of microcomputer for anatomic pathology data. PMID- 3838243 TI - Meningioma of the scalp. Light and electron microscopic observations. AB - Meningiomas occurring in the skin are rare and may be difficult to recognize on frozen section. We found intraoperative cytologic smears helpful in identifying the characteristically bland nuclei, cellular whorls, and psammoma bodies that are typical of the light microscopy of meningiomas in the CNS. This case (a scalp lesion) was also examined ultrastructurally. Cutaneous meningiomas are histologically and ultrastructurally identical to their meningeal counterparts and must be approached with caution surgically. PMID- 3838244 TI - Carcinoid tumor arising in a cystic duplication of the small bowel. AB - We describe a unique case of carcinoid tumor arising in a cystic duplication of the ileum, and review the literature of malignancy associated with small-bowel duplication. PMID- 3838245 TI - Solitary intestinal fibromatosis in the newborn. Rare cause of neonatal intestinal obstruction. AB - We describe a case of solitary fibromatosis of the ileum in an infant. Intestinal fibromatosis is a rare cause of intestinal obstruction in the newborn. The disease is poorly characterized and has been rarely reported under this name. The differential diagnosis is discussed with particular attention to inflammatory fibroid polyps, neurofibromatosis, and sarcoma. Reasons of a theoretical and practical nature are outlined that recommend the term "solitary intestinal fibromatosis" as the most appropriate name for this disease. PMID- 3838246 TI - Neuropeptide Y-like immunoreactivity in neuritic plaques of Alzheimer's disease. AB - Alzheimer's disease, a form of senile dementia, is characterized by the presence of neuritic plaques and neurofibrillary tangles throughout the cortex and hippocampus. This study demonstrates the presence of neuropeptide Y-like immunoreactivity within 10-20% of neuritic plaques. Neuropeptide Y is a 36 amino acid peptide which is distributed unevenly throughout the brain and has an interneuronal location. PMID- 3838247 TI - Progastrin-like immunoreactivity in porcine antrum: identification and characterization with region-specific antisera. AB - In an effort to identify and characterize precursors of gastrin in tissues, we generated region-specific antisera against a synthetic progastrin peptide, Try Gly-Trp-Met-Asp-Phe-Gly-Arg-Arg (GL9), as deduced from the nucleotide sequence of gastrin mRNA. This antisera did not cross-react with gastrin or progastrin peptides with shorter carboxyl-terminal extensions. Progastrin-like immunoreactivity (PGLI) was measured in porcine antrum at a concentration of 6.8 +/- 1.2 pmol/g wet weight (mean +/- SE, n = 5), or roughly 0.2% of that of gastrin. On Sephadex G50 chromatography, a major peak of PGLI was eluted as a slightly larger molecule than gastrin heptadecapeptide (G17) but possessed the same N-terminal immunoreactivity. These findings suggest that G17 may be formed by processing of a carboxyl-terminally extended precursor as an alternative to cleavage of big gastrin (G34). PMID- 3838248 TI - Enhancement of divalent anion transport across the human red blood cell membrane by the water-soluble dansyl chloride derivative 2-(N-piperidine)ethylamine-1 naphthyl-5-sulfonylchloride (PENS-Cl). AB - Sulfate transport across the red cell membrane is enhanced by the newly synthesised, water-soluble and nonpenetrating dansyl chloride derivative 2-(N piperidine)ethylamine-1-naphthyl-5-sulfonylchloride (PENS-Cl). The transport is only enhanced if the potentiating agent 2-(4-aminophenyl-3-sulfonic acid)-6 methylbenzothiazol-7-sulfonic acid (APMB) is present during incubation with PENS Cl. The enhanced flux is reduced by the anion-transport inhibitor 4,4' diisothiocyanatodihydrostilbene-2,2'-disulfonate (H2DIDS) to about the same low level as in untreated controls. In contrast to dansyl chloride, PENS-Cl does not increase cation leakage from the red cells. The effects of PENS-Cl on sulfate transport resemble those produced by dansyl chloride. However, it can be shown that PENS-Cl only reacts with one subset of sites that are modified by dansyl chloride and involved in bringing about the enhancement of sulfate transport. This subset does not include the sites accessible to dansyl chloride in the absence of APMB. It comprises only a fraction of the sites exposed to dansyl chloride in the presence of APMB. Very little labelling of proteins of the red cell membrane can be seen after exposure of ghosts to the PENS-Cl, while dansyl chloride labels all major proteins. PMID- 3838249 TI - Reactivity with lectins of the saccharide components of rhodopsin in reconstituted membranes. Orientation of the carbohydrates. AB - Rhodopsin-containing liposomes may provide a model for investigating the interaction of intrinsic membrane glycoproteins in biological systems. As part of the characterization of this preparation, the surface orientation of the carbohydrates of rhodopsin, assembled from purified bovine rhodopsin and egg phosphatidylcholine was examined, and is the topic of this report. The major tool used in these studies was the interaction with the carbohydrate-specific reagents, plant lectins. Two techniques were used: lectin-mediated aggregation of the liposomes, as measured by light scattering; the binding of 125I-labeled succinylated concanavalin A, and Scatchard analysis as a measure of affinity. The preparation most extensively examined had a mole ratio of rhodopsin:phospholipid of 1:100. Among a variety of lectins which were examined, only concanavalin A, succinylated concanavalin A, and wheat germ agglutinin were able to mediate the aggregation of rhodopsin-containing liposomes, as expected. The aggregation with concanavalin A was prevented by the presence of sugars having the alpha-D glucopyranosyl configuration, and that brought about with wheat germ agglutinin, by N-acetylglucosamine (GlcNAc). In addition, the aggregation with concanavalin A was reversed with methyl alpha-D-mannoside, and with wheat germ agglutinin, by GlcNAc, suggesting that membrane fusion did not take place. On a molar basis, wheat germ agglutinin brought about a greatly reduced extent of aggregation as compared to concanavalin A, suggesting the relative inaccessibility of GlcNAc residues in the liposomes as compared to mannose. The initial rate of the aggregation, however, were similar with either lectin. The first-order rate constants were unaffected by wide variation in the concentrations of concanavalin A and wheat germ agglutinin, and by variation in the mole ratios of rhodopsin in the liposomes from 0.2 to 19 moles per 100 moles of egg lecithin. Rhodopsin liposomes were also prepared from a total lipid extract of rod outer segments instead of egg lecithin. Similar kinetic properties were exhibited by this preparation as were obtained with the liposome prepared with the purified phospholipid. Scatchard analysis of the binding of 125I-labeled succinylated concanavalin A by rhodopsin liposomes indicated the presence of a single class of binding site as the preferred fit, with an apparent Kd of 2.8 X 10(-7) M. The binding was destroyed or extensively interfered with by trypsinization and by periodate treatment. PMID- 3838250 TI - The influence of lipid composition and lectin-glycophorin interaction on the rotational diffusion of glycophorin in vesicles, as measured by time-resolved phosphorescence depolarization. AB - The rotational mobility of glycophorin in various lipid vesicles was studied, using time-resolved measurements of the depolarization of laser flash excited phosphorescence of glycophorin labelled with the triplet probe erythrosin. With the exception of dimyristoylphosphatidylcholine at the phase transition no phosphorescence depolarization decays were observed in the 1-300 microseconds time interval following the laser flash. Instead, a constant anisotropy level was observed, with two distinct values depending on the experimental system. In liquid-crystalline bilayers of dioleoylphosphatidylcholine, bovine brain phosphatidylserine and dimyristolyphosphatidylcholine, the anisotropy was 0.01. This was increased to 0.03 upon addition of wheat germ agglutinin which aggregates glycophorin. In the case of gel state dimyristoylphosphatidylcholine and liquid-crystalline dioleoylphosphatidylethanolamine the anisotropy also amounted to 0.03. Experiments with glycerol to vary the viscosity of the medium, and theoretical considerations, exclude the possibility that these different anisotropy levels are related to differences in motional properties of the entire protein/lipid vesicles. These results strongly suggest that the anisotropy level of 0.03 corresponds to slowly rotating glycophorin (rotational relaxation time greater than 0.3 ms) while the anisotropy level of 0.01 corresponds to fast rotating glycophorin (rotational correlation time less than 1 microseconds). The difference in glycophorin mobility is discussed in terms of aggregation state of the protein, lipid composition of the vesicle bilayer and membrane viscosity. The observed differences in rotational mobility of glycophorin in glycophorin/dioleoylphosphatidylcholine vesicles, glycophorin/bovine heart phosphatidylserine vesicles as compared to glycophorin/dioleoylphosphatidylethanolamine vesicles are not in quantitative agreement with the relative size of the intramembrane particles in these systems as revealed by freeze-fracture electron microscopy. PMID- 3838251 TI - Micromolar concentrations of Al3+ induce phase separation, aggregation and dye release in phosphatidylserine-containing lipid vesicles. AB - The interaction of Al3+, Cd2+ and Mn2+ with phosphatidylserine-containing lipid vesicles was studied. Phase separation of vesicles was investigated by monitoring fluorescence quenching of the phospholipid analogue 1-palmitoyl-2-(6-[N-(7 nitrobenz-2-oxa-1,3-diazol-4-yl)] aminocaproyl)phosphatidylcholine (C6-NBD-PC). Aggregation was determined by turbidimetry and leakage of vesicles content during fusion was monitored by the fluorescence of released 6-carboxyfluorescein. Al3+ demonstrated quenching at less than 30 mumol/l with a maximum effect at 100 mumol/l. Al3+-induced aggregation and dye release from the lipid vesicles were observed in the same concentration range. The effect of Cd2+ and Mn2+ on quenching was much less pronounced and could only be demonstrated in the 0.1-1 mmol/l range. Increasing amounts of phosphatidylcholine or phosphatidylethanolamine in the vesicles decreased both Al3+-induced quenching and aggregation, whereas cholesterol only slightly increased aggregation without affecting quenching. PMID- 3838252 TI - Ca2+-induced phase separation in black lipid membranes and its effect on the transport of a hydrophobic ion. AB - Voltage jump-current relaxation studies have been performed with dipicrylamine doped black membranes of binary lipid mixtures. As in the case of the carrier mediated ion transport (Schmidt, G., Eibl, H. and Knoll, W. (1982) J. Membrane Biol. 70, 147-155) no evidence was found that the neutral lipid phosphatidylcholine (DPMPC) and the charged phosphatidic acid (DPMPA) are heterogeneously distributed in the membrane over the whole range of composition. However, besides a continuous dilution of the surface charges of DPMPA by the addition of DPMPC molecules, different structural properties of mixed membranes influence the kinetics of the dipicrylamine transport. The addition of Ca2+ to the electrolyte induces a lipid phase separation within the membrane into two fluid phases of distinctly different characteristics of the translocation of hydrophobic ions. Thus, it is possible to determine a preliminary composition phase diagram for the DPMPA/DPMPC mixtures as a function of the Ca2+ concentration. PMID- 3838253 TI - Effect of DNA intercalators on poly(ADP-ribose) glycohydrolase activity. AB - Proflavine, ethacridine (2-ethoxy-6,9-acridine diamine), ellipticine, daunomycin and Tilorone R10,556 DA (2,7-bis(piperidinobutyryl)-9H-fluoren-9-one) inhibit poly(ADP-ribose) glycohydrolase activity. The Ki values for proflavine and Tilorone R10,556 DA are 36 microM and 7.3 microM, respectively. The inhibition by intercalators is relieved by DNA but not by DNA-histone complexes. On the contrary, DNA-histone complexes increase the inhibition of some intercalators. Ethidium bromide is not inhibitory by itself. However, in the presence of DNA histone complexes it strongly inhibits the enzyme activity. m-AMSA (4'-(9 acridinylamino)methanesulphon-m-anisidide) and chloroquine have no effect on the enzyme activity, even in the presence of DNA-histone complexes. PMID- 3838254 TI - Metabolism of 3 alpha, 7 alpha-dihydroxy-7 beta-methyl-5 beta-cholanoic acid and 3 alpha, 7 beta-dihydroxy-7 alpha-methyl-5 beta-cholanoic acid in hamsters. AB - The metabolic fate of the bile acid analogs, 3 alpha, 7 alpha-dihydroxy-7 beta methyl-5 beta-cholanoic acid and 3 alpha, 7 beta-dihydroxy-7 alpha-methyl-5 beta cholanoic acid, was investigated and compared with that of chenodeoxycholic acid in hamsters. Both bile acid analogs were absorbed rapidly from the intestine and excreted into bile at rates similar to that of chenodeoxycholic acid. In the strain of hamster studied, the biliary bile acids were conjugated with both glycine and taurine. After continuous intravenous infusion, chenodeoxycholic acid and the analogs became the major bile acid constituents in bile. After oral administration of a single dose of these compounds, fecal analysis revealed the existence of unchanged material (25-35%) as well as considerable amounts of metabolites (65-75%). The major metabolites excreted into feces were more polar than the starting material and were tentatively identified as trihydroxy-7-methyl compounds by radioactive thin-layer chromatography. However, monohydroxy compounds were also found in the fecal extracts. These results show that chenodeoxycholic acid and ursodeoxycholic acid with a methyl group at the 7 position are more resistant to bacterial 7-dehydroxylation than the normally occurring bile acids and that a certain proportion of these analogs is hydroxylated to give the corresponding trihydroxy compound(s). In a control experiment, about 5% of administered chenodeoxycholic acid was metabolized to a trihydroxy bile acid, but most of the compound (95%) was transformed into lithocholic acid. PMID- 3838255 TI - Inhibition of proteoglycan synthesis by hydrogen peroxide in cultured bovine articular cartilage. AB - Oxygen-derived reactive species, generated enzymatically by the action of xanthine oxidase upon hypoxanthine, significantly inhibit proteoglycan synthesis by cultured bovine articular cartilage (Bates, E.J., Lowther, D.A. and Handley, C.J. (1984) Ann. Rheum. Dis. 43, 462-469). Here we extend these investigations and show, through the use of catalase and the specific iron chelator diethylenetriaminepentaacetic acid, that the active species involved is H2O2 and not the hydroxyl radical. Incubations of cartilage with H2O2 at concentrations of 1 X 10(-4) M and above are also inhibitory to proteoglycan synthesis. Subsequent recovery of the tissue is dependent upon the initial dose of xanthine oxidase or H2O2. Xanthine oxidase at 84 mU per incubation results in a prolonged inhibition of proteoglycan synthesis which is still apparent after 14 days in culture. Lower concentrations of xanthine oxidase (21-66 mU) are inhibitory to proteoglycan synthesis, but the tissue is able to synthesise proteoglycans at near normal rates after 3 days in culture. The inhibition of proteoglycan synthesis by 1 X 10(-4) M H2O2 is completely reversed after 5 days in culture, whereas 1 X 10(-3) M H2O2 results in a more prolonged inhibition. The synthesis of the proteoglycan core protein is inhibited, but the ability of the newly formed proteoglycans to aggregate with hyaluronic acid is unimpaired. PMID- 3838256 TI - Reversible oxidant-induced increases in albumin transfer across cultured endothelium: alterations in cell shape and calcium homeostasis. AB - To determine whether reactive oxygen molecules could directly and reversibly increase the transfer of albumin across an endothelial barrier, we measured albumin transfer across monolayers of endothelium cultured on micropore filters before and after exposure to xanthine and xanthine oxidase. Xanthine and xanthine oxidase increased endothelial albumin transfer in a dose-dependent fashion. Parallel phase contrast and fluorescence microscopy demonstrated retraction of adjacent cells from one another and disruption of the actin filaments. The oxidant-induced increases in albumin transfer and changes in cell shape were reversed by removing xanthine oxidase and then incubating the monolayers for 3 1/2 hours in tissue culture media enriched with fetal bovine serum. However, incubation in tissue culture media without serum resulted in progressive injury and cell death. Hence, the brief exposure to oxidants initiated a progressive injury process that was reversed by incubation in serum. Because intracellular and extracellular calcium are important determinants of cell shape, and because some oxidized membrane lipids act as calcium ionophores, we asked whether oxidants altered endothelial calcium homeostasis. Xanthine-xanthine oxidase increased release of 45Ca++ from preloaded cells. The calcium antagonist lanthanum chloride prevented xanthine-xanthine oxidase increases in endothelial albumin transfer and prevented the changes in cell shape; chelation of extracellular calcium inhibited lysis of endothelium by xanthine-xanthine oxidase; and the calcium ionophore A23187 increased endothelial albumin transfer and mimicked the oxidant-induced changes in cell shape. Lanthanum chloride inhibited these effects of A23187. These data suggest that oxygen radicals can reversibly increase endothelial permeability to macromolecules, that this is associated with reversible changes in endothelial cell shape and actin filaments, and that the changes in cell shape are related to oxidant-induced changes in endothelial calcium homeostasis. PMID- 3838257 TI - delta-Aminolevulinic acid synthetase and heme oxygenase activity in lung and liver of rats given DDT and endosulfan intratracheally. PMID- 3838258 TI - Antinociceptive effects of intrathecal opioids, noradrenaline and serotonin in rats: mechanical and thermal algesic tests. AB - Antinociceptive effects of intrathecal injections of morphine, methionine enkephalin, noradrenaline and serotonin were examined in rats, using 3 different methods: the tail-pinch, hot-plate and tail-flick tests. The order of sensitivity of the 3 methods to noradrenaline in the production of antinociception was tail pinch greater than tail-flick greater than hot-plate, while that of morphine, methionine-enkephalin and serotonin was tail-flick greater than hot-plate greater than tail-pinch. These results indicate that intrathecal noradrenaline, but not methionine-enkephalin and serotonin, produces more potent inhibition of the mechanical nociception than does the thermal one, and suggest a closer relationship of the descending noradrenergic system to the mechanical nociceptive system, in the spinal cord of rats. PMID- 3838259 TI - Spinal cord blood flow following subarachnoid tetracaine. AB - Spinal cord and spinal dural blood flow in the cervical, thoracic and lumbosacral regions were measured in dogs using the radioactive microsphere technique. Measurements were taken before and 20 and 40 minutes after lumbar subarachnoid injection of one of the following: physiologic saline; tetracaine 20 mg or tetracaine 20 mg with epinephrine 200 micrograms. No significant change in spinal cord or spinal dural blood flow occurred following subarachnoid physiologic saline or tetracaine with epinephrine. Dogs receiving subarachnoid tetracaine demonstrated a significant increase in lumbosacral spinal cord, and thoracic and lumbosacral dural blood flow at 20 and 40 minutes following injection. Cervical dural blood flow was significantly increased at 40 minutes after subarachnoid tetracaine. Lumbar subarachnoid tetracaine (20 mg) produces a regional spinal cord and generalized dural hyperemia which is prevented by the addition of epinephrine (200 micrograms). PMID- 3838260 TI - General anaesthesia for Nd:YAG laser resection of obstructing endobronchial tumours using the rigid bronchoscope. AB - Provision of general anaesthesia for patients undergoing Nd:YAG laser resection of obstructing endobronchial tumours using the rigid bronchoscope presents unique problems for the anaesthesiologist. We studied 15 patients who underwent 20 of these procedures under general anaesthesia. Patients were anaesthetized and ventilated with either potent inhalation agents via the side arm of the ventilating bronchoscope (Group I: N = 8), or with intravenous agents and the Sanders jet injector attached to the rigid bronchoscope (Group II: N = 12). Patients were paralyzed and ventilation was controlled. The inspired gas mixture was nitrogen and oxygen, and the FIO2 was decreased to 0.3-0.4 during periods of resection. Group I patients had significantly higher peak pCO2's than Group II (8.3 kPa (62 mmHg) vs. 5.6 kPa (44 mmHg); lowest recorded pO2's were comparable and similar to pre-induction values. Both groups exhibited wide blood pressure fluctuations. Heart rates remained within 15 per cent of pre-induction levels. There were no intraoperative deaths, and no airway fires, massive haemorrhages or pneumothoraces. We conclude that these procedures can be undertaken with the use of general anaesthesia and the rigid bronchoscope, but that patients may encounter potentially serious respiratory or haemodynamic instability during the procedure. PMID- 3838261 TI - Phospholipids involved in specific binding of 12-O-(5-azido-2 nitrobenzoyl)phorbol-13-acetate to epidermal microsomes, a photolabeling study. AB - The preparation of 12-O-(5-azido-2-nitro)benzoylphorbol-13-acetate (NABPA) is described. It is used as a photoaffinity probe to study the biochemical components involved in the specific binding of phorbol esters to an epidermal particulate fraction (microsomes) from NMRI mice: without irradiation NABPA binds in a saturable and high affinity manner (KD = 12 nM; Rt = 2.6 pmol/mg protein) to microsomes; after irradiation (at 350 nm) specific photolabeling (representing specific binding of NABPA) is found of phospholipids (phosphatidyl-serine (PS) and -ethanolamine(PE)), but not of protein. The results are discussed in the context of protein kinase C being a receptor for phorbol esters. PMID- 3838262 TI - Urinary hypoxanthine and pseudouridine as indicators of tumor development in mesothelioma-transplanted nude mice. AB - A human mesothelioma was heterotransplanted to nude mice, and the urinary excretions of hypoxanthine, xanthine, pseudouridine, orotic acid, 7 methylguanine, and 1-methylhypoxanthine have been followed before and after the tumor transplantation. The compounds were measured by means of isotachophoresis, which has been found a rapid and precise method. The tumor reached maximum size within 30 days, and at this time a significantly increased excretion of pseudouridine and hypoxanthine was observed. Tumor growth was stopped by chemotherapy (vincristine, cyclophosphamide, prednisolone, and Adriamycin), and corresponding to this, a decrease occurred in both pseudouridine and hypoxanthine excretion to normal values. PMID- 3838263 TI - Clonal attenuation in chick embryo fibroblasts. Experimental data, a model and computer simulations. AB - When cells from mass cultures of chick embryo fibroblasts are grown at very low density, some cells yield large clones while others produce smaller clones, and some cells fail to divide at all. The distribution of clone sizes is related to the number of population doublings which the donor mass culture has undergone: the more doublings which have occurred, the smaller the average clone size. In this report we describe a model which analyses this phenomenon, referred to as 'clonal attenuation', in detail. The model is based on the concept that a cell with hypothetically unlimited replicative potential--i.e. a 'stem' cell--can become 'committed' to a programme of limited replicative potential. This event is assumed to be stochastic and to have a fixed probability per stem cell division. The parameters of the model are: Pc, the probability of commitment; N, the number of differentiative divisions; and Tc, the cell-cycle times. By computer simulation, it is shown that Pc increases roughly exponentially at each successive stem cell division. According to the model, when the daughter of a stem cell becomes committed, its progeny proceed through N obligatory divisions before becoming terminally differentiated (post-mitotic). The best-fit value of N was found to be seven. The simulations also reveal that the absolute number of stem cells in the total population increases for most of the lifespan of the culture. When Pc becomes much greater than 0.5, the number of stem cells declines rapidly to zero, and the culture nears senescence. Sensitivity analysis shows that Pc can assume only a limited range of values at each stem-cell division. PMID- 3838264 TI - Aspects of statistics in studies of cell proliferation. IV. Simulation. AB - Computer simulation of an experiment can help to reveal how effective that experiment might be in estimating cell kinetic parameters, or in elucidating the nature of a proliferative response to a perturbation of the steady state, such as a carcinogenic or therapeutic treatment. Writing a simulation also clarifies one's thoughts about possible mechanisms of the proliferative response. PMID- 3838265 TI - Identification of the sequence responsible for the nuclear accumulation of the influenza virus nucleoprotein in Xenopus oocytes. AB - Influenza virus nucleoprotein (NP), synthesized in Xenopus oocytes after injection of cloned NP cDNA, enters and accumulates in the nucleus. We have used in vitro mutagenesis of this cDNA to study the cellular distribution of mutated NP polypeptides. Mutants lacking amino acids 327-345 of wild-type NP enter the nucleus but do not accumulate there to the same extent as the wild-type protein, suggesting that this region has a role in nuclear accumulation. This possibility is further strengthened by similar studies involving the production of fusion proteins in which various amino-terminal sequences of the NP gene are fused to the complete chimpanzee alpha 1-globin sequence: when globin cDNA was injected into and expressed in oocytes the protein remains exclusively in the cytosol; however, when the globin cDNA is fused to a portion of NP cDNA that includes the region encoding amino acids 327-345, the resulting fusion protein enters and accumulates in the nucleus. Fusion proteins lacking this region of the NP enter but do not accumulate in the nucleus. PMID- 3838266 TI - [Tumors of the thyroid gland in childhood--study of biopsy material]. AB - A group of 29 biopsies from resected thyroid gland was represented by 5 boys and 24 girls of the age under 15 years; the mean age was 12,7 years. There were 7 cases of colloid adenoma, 5 of follicular adenoma, 5 of atypical adenoma and 5 of papillary carcinoma among them. A basedowian goiter was verified in 4 cases, Hashimoto-type thyroiditis was found once, thyroid gland was lacking twice. A shift between clinical and pathomorphological diagnoses was remarkable. PMID- 3838267 TI - Comparison of the in vitro and in vivo hepatic metabolism of the carcinogen 1 nitropyrene. AB - [4,5,9,10(-3)H]1-nitropyrene was incubated with NADH- or NADPH-fortified rat liver microsomes under an argon atmosphere. Residual substrate and metabolites were extracted with ethyl acetate and analyzed by high pressure liquid chromatography. Both reduced and oxidized products were formed: namely, 1 aminopyrene, trans-4,5-dihydroxy-4,5-dihydro-1-nitropyrene, and 3-, 6- and 8 hydroxy-1-nitropyrene. When incubations were conducted with rat liver cytosol, only the reduced products 1-nitrosopyrene and 1-aminopyrene were detected. In parallel experiments, [4,5, 9,10-3H]1-nitropyrene was administered to rats by intravenous injection or gavage and the bile was collected. After 4 h, approximately one-third of the intravenously-administered compound appeared in the bile as O-glucuronides of 3-, 6- and 8-hydroxy-1-nitropyrene, the O glucuronide of trans-4,5-dihydroxy-4,5-dihydro-1-nitropyrene, and unidentified glutathione conjugates. The same metabolites were found in rats treated with 1 nitropyrene by gavage; however, only 10% of the dose appeared in the bile within 12 h. These studies indicate that both nitroreduction and ring oxidation are involved in the hepatic metabolism of 1-nitropyrene. The importance of these pathways in the etiology of 1-nitropyrene tumorigenesis is discussed. PMID- 3838269 TI - Hewlett-Packard 41 software package for radioimmunoassay data evaluation and continuous batch-to-batch quality control. PMID- 3838268 TI - Assessment of the performance of electrocardiographic computer programs with the use of a reference data base. AB - To allow an exchange of measurements and criteria between different electrocardiographic (ECG) computer programs, an international cooperative project has been initiated aimed at standardization of computer-derived ECG measurements. To this end an ECG reference library of 250 ECGs with selected abnormalities was established and a comprehensive reviewing scheme was devised for the visual determination of the onsets and offsets of P, QRS, and T waves. This task was performed by a group of cardiologists on highly amplified, selected complexes from the library of ECGs. With use of a modified Delphi approach, individual outlying point estimates were eliminated in four successive rounds. In this way final referee estimates were obtained that proved to be highly reproducible and precise. This reference data base was used to study measurement results obtained with nine vectorcardiographic and 10 standard 12-lead ECG analysis programs. The medians of program determinations of P, QRS, and T wave onsets and offsets were close to the final referee estimates. However, an important variability could be demonstrated between measurements from individual programs and mean differences from the referee estimates amounted to 10 msec for QRS for certain programs. In addition, the variances of all programs with respect to the referee point estimates were variable. Some programs proved to be more accurate and stable when the data from high- vs low-noise recordings were analyzed. Average Q wave durations calculated from ECGs for which programs agreed on the presence of a Q or QS wave differed by more than 8 msec in several program to-program comparisons. Such differences may have important consequences with respect to diagnostic performance. Various factors that might explain these differences have been determined. The present study demonstrates that to allow an exchange of results and diagnostic criteria between different ECG computer programs, definitions, minimum wave requirements, and measurement procedures urgently need to be standardized. PMID- 3838270 TI - The knee jerk test for diagnosis of torn meniscus. PMID- 3838271 TI - Neuropeptide Y: a novel renal peptide with vasoconstrictor and natriuretic activity. AB - A novel vasoconstrictor peptide, neuropeptide Y (NPY), has been identified in considerable quantities in the renal artery and kidney. Within the kidney, NPY was confined to the cortex and corticomedullary interface, the regions where the juxtaglomerular apparatus is most numerous. In the isolated perfused rat kidney, NPY caused a prompt dose-dependent increase in perfusion pressure and reduction in flow, with only a small fall in glomerular filtration rate (GFR). In spite of the reduced renal perfusion, a dose-dependent natriuresis was observed. This response contrasts to the response of this preparation to noradrenaline, which causes sodium reabsorption. The presence of a potent vasoconstrictor and natriuretic peptide within the rat renovascular system suggests that it may play a significant role in the control of renal function. PMID- 3838272 TI - An algorithm to improve the computational efficiency of genetic linkage analysis. AB - The computational complexity of genetic linkage analysis can increase exponentially with the square of the number of alleles at a marker locus. Many of the most informative marker loci have a large number of associated alleles. The precise identities of the alleles are irrelevant to the linkage analysis so long as identity-by-descent and linkage-phase information are preserved. This paper introduces an algorithm which, by relabeling, reduces the number of alleles at the marker locus, thereby increasing the speed of the analysis. The relabeling scheme preserves linkage-phase and identity-by-descent information so the results of the analysis are unaffected. Unlike previously published methods, this algorithm can be applied to pedigrees of arbitrary structure with both complete and incomplete phenotypic information. PMID- 3838273 TI - Computer-assisted categorization of brain computerized tomography pixels into cerebrospinal fluid, white matter, and gray matter. AB - A computer-assisted method was employed to estimate the amounts of cerebrospinal fluid (CSF), white matter, and gray matter in individual computerized tomography (CT) scans of brains. By means of an image processing procedure (DMORPH), the means +/- SD CT numbers of "pure" CSF, white matter, and gray matter were determined in each scan and stored. A CATSEG program used these means to define ranges for CT numbers for each of the three tissues on each scan, and to assign each pixel in a scan to one of the three categories. Summing over seven serial scans provided volumetric estimates of CSF, white matter, and gray matter in a brain segment. For 10 subjects aged 21 to 43 years, CSF volume equaled 1.4 to 4.7% of the total segment volume, white matter equaled 37.5 to 48.2%, and gray matter equaled 50.2 to 58.9%. Image processing hardware and software which allow standardized sampling from CT images for the evaluation of surface areas and CT numbers are described. These procedures, as applied to CT scans of the human brain, can be used to estimate the volumes of CSF, white matter, and gray matter in a selected intracranial segment. PMID- 3838274 TI - Chronic idiopathic intestinal pseudoobstruction. Coexistence of smooth muscle and neuronal abnormalities. PMID- 3838276 TI - A rapid, universal TI-59 model-independent pharmacokinetic analysis program based on statistical moment theory. AB - A model-independent program for pharmacokinetic analyses based on statistical moment theory is presented and demonstrated. The program uses an inexpensive and portable TI-59; a PC-100A printer adds convenience but is optional. The program may be used in analysis of blood, serum, or plasma concentration vs. time curves originating from iv, im, po, sl, or sc administration. Drug input can be zero or first order; both single-dose and multiple-dose steady-state conditions can be evaluated. A comparison between results generated using moment analysis and traditional two-compartment nonlinear regression showed excellent agreement. PMID- 3838275 TI - Cloning of a gene expressed in human breast cancer and regulated by estrogen in MCF-7 cells. AB - Messenger RNAs (mRNAs) were prepared from MCF-7 breast cancer cells grown in the presence of estradiol. Complementary DNAs (cDNAs) were inserted into pBR322 plasmid and a library of 4400 recombinant bacterial clones was prepared. The clones were screened by in situ differential hybridization with cDNAs prepared from RNAs of MCF-7 cells grown either in the presence or absence of estradiol. Several estrogen-induced or estrogen-repressed clones were identified. One of them corresponded to a relatively frequent mRNA (0.8% of recombinant plasmids) of 650 nucleotides. The concentration of this mRNA was increased by estradiol (half maximal induction approximately 0.05 nM) but not by progesterone, dexamethasone, or dihydrotestosterone. Tamoxifen inhibited the effect of estradiol but was devoid of any agonistic activity when administered separately. This messenger was present in biopsies of breast cancer, but not in endometrium or liver. The cloned cDNA was sequenced. An open reading frame was found corresponding to a protein of less than 100 amino acids. A search of data banks showed no identity or marked similarity to previously published DNA or protein sequences, particularly to those of growth factors evoked by some characteristics of the coded polypeptide. The cloned cDNA probe was used to screen a library of Charon 4A phage containing human genomic fragments. Screening of 300,000 phages yielded two different recombinants hybridizing to the cDNA. Southern blot experiments using DNA from recombinant phage, MCF-7 cells, and placenta showed the presence of a unique gene exhibiting a similar restriction pattern in DNAs from malignant and nonmalignant tissues. PMID- 3838277 TI - Kinetic dosing computer support. PMID- 3838278 TI - Nucleotide sequences of the cDNA and an intronless pseudogene for human lactate dehydrogenase-A isozyme. AB - Eight cDNA clones for lactate dehydrogenase-A isozyme (LDH-A) were isolated from a human fibroblast cDNA library, characterized, and no sequence heterogeneity was found. Four cDNA clones appear to contain nearly full-length cDNA inserts and the complete nucleotide sequence of 1710 base pairs consists of the protein-coding sequence (999 base pairs), the 5' (97 base pairs) and 3' (565 base pairs) untranslated regions and poly(dA) tail (49 base pairs). The predicted amino acid sequence of the human LDH-A polypeptide shows 92% homology (27 differences out of 331 amino acids compared) with that of the pig LDH-A subunit determined by direct protein sequencing [Kiltz et al. (1977) Hoppe-Seyler's Z. Physiol. Chem. 358, 123 127]. Human genomic clones containing an LDH-A pseudogene were isolated and the nucleotide sequence of 1635 base pairs from an intronless pseudogene was determined. The presence of two termination codons, two deletions of three nucleotides each and the replacement of three arginine residues at the active site (nos 98, 105 and 168) by other amino acids renders its coding region incapable of producing a functional LDH-A protein. A comparison between human LDH A cDNA and the pseudogene sequences reveals 12.9% differences (114 transitions, 65 transversions and 36 deletions/insertions). Further, only four out of the 25 dCpdG dinucleotides present in the cDNA sequence remain unchanged, although the sequences possess 87.1% homology. PMID- 3838279 TI - Preparation and characterization of NADP derivatives alkylated at 2'-phosphate and 6-amino groups. AB - Reaction of NADP with 3-propiolactone at pH 6 gave new NADP derivatives carboxyethylated at the 2'-phosphate or 6-amino group, or both: 2'-O-(2 carboxyethyl)phosphono-NAD (I), N6-(2-carboxyethyl)-NADP (II), and 2'-O-(2 carboxyethyl)phosphono-N6-(2-carboxyethyl)-NAD (III). Their structures were assigned on the basis of ultraviolet, 1H-NMR and 31P-NMR spectra, and also treatment with nucleotide pyrophosphatase or alkaline phosphatase. Carbodiimide promoted reaction of derivative I with 1,2-diaminoethane gave 2'-O-[N-(2 aminoethyl)carbamoylethyl]phosphono-NAD (IV); derivative III gave 2'-O-[N-(2 aminoethyl)carbamoylethyl]phosphono-N6-[N-(2-aminoethyl ) carbamoylethyl]-NAD (IV). The same reaction of derivative II, on the other hand, gave a mixture of N6 [N-(2-aminoethyl)carbamoylethyl]-NADP (Va) and its 3'-phosphate isomer (Vb). The mixture was converted to Va via the 2',3'-cyclic derivative (Vc). Their structures were assigned on the basis of ultraviolet and 1H-NMR spectra, and also treatment with alkaline phosphatase or 3'-nucleotidase. All the NADP derivatives obtained in this work could be reduced with yeast glucose-6-phosphate dehydrogenase. PMID- 3838280 TI - Amsacrine: a new drug for hematological malignancies. PMID- 3838281 TI - Selective retrograde transneuronal transport of wheat germ agglutinin-conjugated horseradish peroxidase in the oculomotor system. AB - The fate of wheat germ agglutinin-conjugated horseradish peroxidase (WGA/HRP) subsequent to its uptake and retrograde axonal transport in abducens motoneurons of the monkey was studied using histochemical localization of WGA/HRP reaction product and light microscopy. Injections of WGA/HRP into monkey lateral rectus muscles produced a pattern of labelled motoneurons like that obtained with native HRP. In contrast to the native HRP data, WGA/HRP injections consistently labelled additional neuronal populations in the ipsilateral medial vestibular nucleus and contralateral dorsal medullary reticular formation. These regions correspond to those containing neurons known to make inhibitory synaptic contact with abducens motoneurons. No labelled neurons were observed in regions which contain excitatory premotor neurons. These data are consistent with the notion of retrograde transneuronal transport of WGA/HRP to premotor neurons. The specificity of the transneuronal exchange is indicated by the finding that only certain populations of premotor neurons were labelled. The precise manner by which preferential transneuronal transport of WGA/HRP is attained remains to be determined. PMID- 3838282 TI - Identification of the D-glucose binding polypeptide of the renal Na+-D-glucose cotransporter with a covalently binding D-glucose analog. AB - The covalently binding D-glucose analog 10-N-(bromoacetyl)amino-1-decyl-beta-D glucopyranoside (BADG) was synthesised and shown to be a high-affinity inhibitor of the renal Na+-D-glucose contransporter. From renal brush-border membranes a protein fraction was isolated, in which the concentration of Na+-dependent phlorizin binding sites per mg protein was enriched 7-fold. In labeling experiments with this protein fraction a polypeptide of Mr approximately 79000 was identified as containing the D-glucose binding site of the renal Na+-D glucose cotransporter. PMID- 3838283 TI - Rohdei-litorin: a new peptide from the skin of Phyllomedusa rohdei. AB - The bombesin-litorin family of peptides is characterized by the common amino acid sequence-Gly-His-X-Met-NH2 at the C-terminus, where X is a hydrophobic or aromatic residue. A new member of this family, rohdei-litorin, has been isolated from amphibian skin and its structure shown to be: Glp-Leu-Trp-Ala-Thr-Gly-His Phe-Met-NH2. This new peptide displayed a greater affinity than other members of the family for rat urinary bladder receptors. A litorin-like peptide, with high affinity for this kind of receptor, has already been described in mammalian spinal cord and named neuromedin B. Rohdei-litorin shares with neuromedin B the entire C-terminal octrapeptide and may be considered the amphibian counterpart of this mammalian neuropeptide. PMID- 3838284 TI - The rates of replicative and unscheduled DNA synthesis as functions of temperature in LS/B1, L-As and L-C3 cells. AB - The relative rates of replicative and unscheduled DNA synthesis were determined over a temperature range of 2 degrees to 42 degrees C in LS/B1, L-As and L-C3 cells. The rates were determined by measuring the amount of 3H-dTh incorporated into DNA during 60 min incubation of cells at a given temperature. Acid-resistant 3H-activity incorporated into DNA at 2 degrees C was evaluated as evidence of DNA turnover, not non-specific adsorption of 3H-dTh. The relative rates of RDS and UDS were expressed as functions of temperature and from the data the values of Q10 and Eact necessary for incorporation of one mole of dTh into DNA during RDS and UDS were calculated. The values of Q10 and Eact are comparable to those reported for HeLa, V-79, L5/78Y and the epithelial cells. The experimentally determined values of Q10 and Eact for UDS in the lines tested did not vary. UDS, compared to RDS, is evaluated as a process with lesser demands for energy. PMID- 3838285 TI - Quantitation of type II procollagen mRNA levels during chick limb cartilage differentiation. AB - A single-stranded DNA probe complementary to chicken type II procollagen mRNA has been used to quantitate levels of that mRNA present in chicken limb mesenchyme during cartilage differentiation. Excess labeled probe prepared from a cDNA template cloned in M13mp9 was hybridized to completion to increasing amounts of total RNA and assayed by protection from S1 nuclease digestion. Estimates of the absolute levels of type II procollagen RNA were determined using the M13mp9 template containing the coding strand as a standard. RNA complementary to the probe increased from 20 copies per diploid genome in stage 24 limb to approximately 2000 copies per diploid genome in stage 24 limb mesenchyme which had differentiated to cartilage in culture. Similar levels were found in cartilage from stage 31 limb. Sternal cartilage from 17-day embryos contained approximately 10,000 copies per diploid genome suggesting that the level of expression of this gene is different in limb growth cartilage compared with sternal cartilage. Low but detectable levels of RNA complementary to the probe were observed in limb at stages 20-24. Since a large fraction of the type II procollagen RNA in these early limbs is associated with polysomes, the type II procollagen gene appears to be expressed at a low level prior to phenotypic differentiation and prior to the accumulation of immunologically detectable levels of type II collagen. PMID- 3838286 TI - Cochlear implants in young children: some dilemmas. PMID- 3838287 TI - Peptide YY radioimmunoassay. PMID- 3838288 TI - Low serum 25-hydroxyvitamin D in hereditary hemochromatosis: relation to iron status. AB - Under normal conditions, vitamin D absorbed from the diet or synthesized in the skin is transported to the liver where it undergoes hydroxylation. The purpose of this study was to determine whether excess hepatic iron affects this process and the subsequent production of 1,25-dihydroxyvitamin D (1,25-[OH]2D) in the kidney. Mean serum 25-hydroxyvitamin D (25-OHD) concentrations in untreated hereditary hemochromatosis were 13 +/- 6 (SD) in 9 patients with cirrhosis, 13 +/- 6 in 5 patients with hepatic fibrosis, and 22 +/- 6 in 10 patients with normal hepatic architecture aside from siderosis and were significantly lower than the levels found in 24 controls matched for age, sex, and season, p less than 0.05. The mean serum 25-OHD levels in the two groups with hemochromatosis and hepatic damage were significantly lower than the value in the group with normal hepatic architecture, p less than 0.05. Serum 25-OHD levels in individual patients were inversely related to the size of body iron stores as measured by exchangeable body iron, r = -0.64, or serum ferritin, r = -0.47, p less than 0.05. In 15 patients removal of excess body iron by venesection therapy produced a significant increase in the mean serum 25-OHD from 20 ng/ml to 30 ng/ml, p less than 0.05. In contrast, mean serum 1,25-[OH]2D levels were similar in iron-loaded and control subjects, indicating that the regulation of this metabolite was intact in patients with hemochromatosis. The results reveal that the low serum 25 OHD concentration in patients with hemochromatosis is directly related to the extent of iron loading and it is improved by venesection therapy. PMID- 3838289 TI - Steroid modulation of Mullerian duct regression in the chick embryo. AB - The recent demonstrations that Mullerian inhibiting substance (MIS) is present in embryonic chick ovaries (P. K. Hutson, H. Ikawa, and P. K. Donahoe (1981). J. Pediatr. Surg. 16, 822-827), and that exogenous diethylstilbestrol does not significantly inhibit MIS secretion from feminized testes (Hutson et al. (1982) J. Pediatr. Surg. 17, 953-959), suggest that ovarian estrogens protect the female left Mullerian duct from MIS-induced regression. The possibility exists, however, that ovarian MIS may be inactive. This study was designed to see if interference with estrogen action in ovo would allow MIS to cause regression of the female left Mullerian duct. The "antiestrogens," tamoxifen and LY117018, had little effect on the female Mullerian ducts unless given in high doses or with added testosterone (greater than 0.1 mg). Two compounds known to inhibit estrogen synthesis, aminoglutethimide and 4-hydroxyandrostenedione, had no effect on their own, even in high doses (less than 1.0 mg/egg). However, when administered together (0.5 mg each) there was significant disappearance of the lower ends of both Mullerian ducts. Norethindrone, which has been described recently as an aromatase inhibitor (Y. Osawa, C. Yarborough, and V. Osawa (1982). Science (Washington, D. C.) 215, 1249-1251) caused partial regression of the upper end of the left Mullerian duct as well as complete loss of the lower ends of both ducts in the female. These results suggest that the steroid environment is a critical factor in the response of the Mullerian ducts to MIS, and that estrogen blockage may allow endogenous MIS from the ovary to induce partial regression of the Mullerian ducts in the female chick embryo. PMID- 3838290 TI - Radiotherapy and/or chemotherapy as adjuvant treatment of uterine sarcomas. AB - A retrospective evaluation of 87 cases of uterine sarcoma treated during 1965 1980 at two Swedish hospitals has been made. Adjuvant postoperative radiotherapy has been compared with adjuvant chemotherapy. Various types of combination treatments were also evaluated. Both types of adjuvant therapy seem to reduce the failure rate, both locally in the pelvis and at distant sites, although survival, studied by the life table technique, was unaffected. Radiotherapy appears to reduce the number of pelvic failures when used as combination therapy and chemotherapy tends to prevent distant recurrences when used together with surgery. Further prospective and randomized studies are needed, however, to answer the question of the long-term value of adjuvant radiotherapy and/or chemotherapy in the treatment of uterine sarcomas. PMID- 3838291 TI - Study of human red cell NADH diaphorase (Dia1) in the Italian population. AB - A total of about 4,500 individuals from Northern, Central and Southern Italy have been analyzed for red cell NADH diaphorase. The results show that the Italians differ significantly (p less than 0.005) from the other examined populations of European origin by showing a higher frequency of the Dia2 allele (6.4%) and a lower frequency of other Dia variants (0.6%). PMID- 3838292 TI - Inhibition of human neutrophil receptor-mediated uptake of N-formyl-met-leu-phe by platelet factor 4 (59-70). AB - Human platelet factor 4 (PF4) and a substituent dodecapeptide designated PF4(59 70) elicited human neutrophil and monocyte chemotaxis with a similar concentration-dependence and maximal responses equal to that attained by chemotactic fragments of C5 (C5fr). At maximally chemotactic concentrations, PF4(59-70) stimulated the secretion by neutrophils of approximately 40% and 60% of the respective quantities of beta-glucuronidase and beta-glucosaminidase released by 10(-6) M N-formyl-methionyl-leucyl-phenylalanine (fMLP). In contrast to the deactivation of chemotaxis achieved by preincubation of neutrophils with other chemotactic factors, prior exposure to 10(-6)M PF4(59-70) for 2 min, or 20 min at 37 degrees, enhanced by 1.5- to 2-fold the chemotactic responses of neutrophils evoked by optimal concentrations of fMLP, C5fr, leukotriene B4, and PF4(59-70). Concentrations of PF4(59-70) which enhanced neutrophil chemotaxis inhibited the rate of receptor-mediated internalization of [3H]fMLP at 37 degrees and 18 degrees, but at 0 degrees failed to alter the binding affinity or the number of receptors for [3H]fMLP. Preincubation of neutrophils at 37 degrees with concentrations of PF4(59-70) which enhanced neutrophil chemotaxis also did not affect the subsequent binding of [3H]fMLP at 0 degrees. The inhibition by PF4(59 70) of the receptor-mediated internalization of [3H]fMLP was not mimicked by other positively charged compounds. The specific inhibition of receptor-mediated internalization of fMLP may explain the enhanced chemotactic responsiveness of neutrophils preincubated with PF4(59-70). PMID- 3838293 TI - Oculocutaneous manifestations of thyroid disease. PMID- 3838294 TI - Erythema nodosum related to propylthiouracil treatment for thyrotoxicosis. PMID- 3838295 TI - [Arthroscopic knee surgery in the district hospital]. PMID- 3838296 TI - [Clinical and arthrographic diagnosis of lateral discoid meniscus]. PMID- 3838297 TI - Esophageal complications from combined chemoradiotherapy (cyclophosphamide + Adriamycin + cisplatin + XRT) in the treatment of non-small cell lung cancer. AB - Esophageal complications from combined chemoradiotherapy (CCRT) were analyzed in 55 patients with limited non-small cell lung cancer. CCRT consisted of chemotherapy (cyclophosphamide, doxorubicin (Adriamycin), and cisplatin: CAP) and chest irradiation (5000 rad in 25 fractions/5 weeks). Forty-five patients received two courses of CAP, followed by five weekly courses of low dose CAP and irradiation followed by maintenance courses of CAP (Group 1). Ten patients received concomitant CCRT from the onset of treatment (Group 2). Esophagitis occurred in 80% of all patients. Severe esophagitis occurred in 27% of patients of Group 1 and 40% of patients of Group 2. Esophageal stricture or fistula developed in 1 of 45 (2%) patients in Group 1, and 3 of 10 (30%) patients in Group 2 (p less than 0.025). Weekly low-dose chemotherapy administered concomitantly with chest irradiation (R) at the onset of treatment significantly increases esophageal complications. A review of the literature suggests that CCRT may be used safely with split courses of R. The duration between onset of chemotherapy either before or after R should be greater than one week. PMID- 3838298 TI - Ivermectin for treatment of nasal capillariasis in a dog. AB - One oral dose of ivermectin successfully rid a dog of Capillaria aerophila that were infecting the nasal passages. Diagnosis was made by finding the eggs in the feces and in the nasal discharge, and or finding the worms in a biopsy specimen taken from the nasal passage. Ivermectin was chosen because of ease of administration, expected efficacy, and minimal expense. Although this dog did not show any of the adverse CNS effects associated with the use of ivermectin, these potential side-effects should be kept in mind any time this anthelmintic is used in dogs. PMID- 3838299 TI - A41030, a complex of novel glycopeptide antibiotics produced by a strain of Streptomyces virginiae. Taxonomy and fermentation studies. AB - A41030 is a complex of novel glycopeptide antibiotics produced by a culture isolated from a soil. Taxonomic studies have identified the microorganism, NRRL 15156, as a strain of Streptomyces virginiae. The major factor, A41030A, and three of the six minor factors are unique among glycopeptides in that they are naturally occurring aglycones, containing no neutral or amino sugars. The A41030 that was not spontaneously released into the fermentation broth could be released from the biomass into aqueous media at pH 10.5. In contrast to the vancomycin and N-demethylvancomycin fermentations, A41030 biosynthesis was stimulated by enriching the medium with K2HPO4 at a level of 1 mg/ml. Enrichment with putative precursors of the aglycone, however, did not increase the biosynthesis of A41030. PMID- 3838300 TI - Mutual pro-drugs of the olivanic acids and renal dipeptidase inhibitors. AB - The carbapenem antibiotics, which include the olivanic acids and thienamycin, possess potent broad spectrum antibacterial activity. They are however extensively metabolized by the renal dipeptidase enzyme, dehydropeptidase I. As a result of this degradation, only low urinary recoveries of antibiotic are obtained in vivo. The preparation of mutual pro-drugs of the olivanic acids and an inhibitor of the renal dipeptidase enzyme is described. MM 22382 and MM 13902 have been combined with Z-2-isovaleramidobut-2-enoic acid as double esters of formaldehyde hydrate. Administration of these linked esters to mice results in improved urinary recoveries of antibiotic. PMID- 3838301 TI - Exocellular esterase and emulsan release from the cell surface of Acinetobacter calcoaceticus. AB - An esterase activity has been found, both in the cell-free growth medium and on the cell surface of the hydrocarbon-degrading Acinetobacter calcoaceticus RAG-1. The enzyme catalyzed the hydrolysis of acetyl and other acyl groups from triglycerides and aryl and alkyl esters. Emulsan, the extracellular heteropolysaccharide bioemulsifier produced by strain RAG-1, was also a substrate for the enzyme. Gel filtration showed that the cell-free enzyme was released from the cell surface either emulsan free or associated with the bioemulsifier. The partially purified enzyme was found to interact specifically with the esterified fully active emulsan, but not with the deesterified polymer. A role for esterase in emulsan release from the cell surface was indicated when the enzyme was preferentially depleted from the cell surface under conditions in which emulsan was not released. Such cells lost the capacity to release the biopolymer. PMID- 3838303 TI - Induction of spermidine N1-acetyltransferase by 1 alpha,25-dihydroxyvitamin D3 as an early common event in the target tissues of vitamin D. AB - We have reported that the duodenal ornithine decarboxylase activity and the tissue content of putrescine increase markedly after a single intravenous injection of 1 alpha,25-dihydroxyvitamin D3 (1 alpha,25(OH)2D3) into vitamin D deficient chicks (Shinki, T., Takahashi, N., Miyaura, C., Samejima, K., Nishii, Y., and Suda, T. (1981) Biochem. J. 195, 685-690). In the present study, we examined in the same experimental system the effect of 1 alpha,25(OH)2D3 on the activity of duodenal spermidine N1-acetyltransferase, a rate-limiting enzyme catalyzing the conversion from spermidine to putrescine. The duodenal spermidine N1-acetyltransferase activity began to increase 30 min after a single intravenous injection of 625 ng of 1 alpha,25(OH)2D3 and attained a maximum in 2 h. As little as 1.25 ng of 1 alpha,25(OH)2D3 induced a small but significant increase in the spermidine N1-acetyltransferase activity, and the maximal response was obtained by 125 ng of the vitamin. The dose levels of 1 alpha,25(OH)2D3 required to induce duodenal spermidine N1-acetyltransferase activity were only one-tenth as much as those required to induce ornithine decarboxylase activity. The spermidine N1 acetyltransferase activity was induced commonly in the target tissues of vitamin D, whereas ornithine decarboxylase activity occurred only in intestine. The 1 alpha,25(OH)2D3-induced spermidine N1-acetyltransferase activity was greatly inhibited by prior administration of actinomycin D or cycloheximide. When 30,000 X g intestinal supernatants were incubated with [14C]spermidine, [14C]putrescine was formed. These results clearly indicate that the induction of spermidine N1 acetyltransferase activity is the 1 alpha,25(OH)2D3-induced earliest de novo synthesis in several proteins induced by the vitamin reported to date and that the 1 alpha,25(OH)2D3-induced duodenal synthesis of putrescine occurs by the pathways from both ornithine and spermidine. PMID- 3838302 TI - Mechanisms of 3-hydroxy-3-methylglutaryl coenzyme A reductase overaccumulation in three compactin-resistant cell lines. AB - We have isolated three mammalian cell lines which are resistant to compactin, a competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase. The drug resistance in all three cell lines is due to an increase of HMG-CoA reductase activity. Two of the three cell lines overaccumulate HMG-CoA reductase messenger RNA when grown in the presence of compactin. DNA hybridization experiments indicate that both a baby hamster kidney-derived compactin-resistant cell line, C100, and a cell line derived from mouse 3T6 cells, 3T6-40, exhibit amplifications of the HMG-CoA reductase gene. A third compactin-resistant cell line derived from Chinese hamster ovary cells, ML100, does not exhibit an amplification of the HMG-CoA reductase gene, nor does it show an elevated level of HMG-CoA reductase mRNA, comparable to that seen in the other cell lines. PMID- 3838304 TI - Reactive site peptide structural similarity between heparin cofactor II and antithrombin III. AB - Heparin cofactor II (Mr = 65,600) was purified 1800-fold from human plasma to further characterize the structural and functional properties of the protein as they compare to antithrombin III (Mr = 56,600). Heparin cofactor II and antithrombin III are functionally similar in that both proteins have been shown to inhibit thrombin at accelerated rates in the presence of heparin. There was little evidence for structural homology between heparin cofactor II and antithrombin III when high performance liquid chromatography-tryptic peptide maps and NH2-terminal sequences were compared. A partially degraded form of heparin cofactor II was also obtained in which a significant portion (Mr = 8,000) of the NH2 terminus was missing. The rates of thrombin inhibition (+/- heparin) by native and partially degraded-heparin cofactor II were not significantly different, suggesting that the NH2-terminal region of the protein is not essential either for heparin binding or for thrombin inhibition. A significant degree of similarity was found in the COOH-terminal regions of the proteins when the primary structures of the reactive site peptides, i.e. the peptides which are COOH-terminal to the reactive site peptide bonds cleaved by thrombin, were compared. Of the 36 residues identified, 19 residues in the reactive site peptide sequence of heparin cofactor II could be aligned with residues in the reactive site peptide from antithrombin III. While the similarities in primary structure suggest that heparin cofactor II may be an additional member of the superfamily of proteins consisting of antithrombin III, alpha 1-antitrypsin, alpha 1 antichymotrypsin and ovalbumin, the differences in structure could account for differences in protease specificity and reactivity toward thrombin. In particular, a disulfide bond which links the COOH-terminal (reactive site) region of antithrombin III to the remainder of the molecule and is important for the heparin-induced conformational change in the protein and high affinity binding of heparin does not appear to exist in heparin cofactor II. This observation provides an initial indication that while the reported kinetic mechanisms of action of heparin in accelerating the heparin cofactor II/thrombin and antithrombin III/thrombin reactions are similar, the mechanisms and effects of heparin binding to the two inhibitors may be different. PMID- 3838305 TI - Purification and partial characterization of the b-type cytochrome from human polymorphonuclear leukocytes. AB - Polymorphonuclear leukocytes contain an oxidase system that can be activated to produce superoxide radicals and hydrogen peroxide. A nonmitochondrial b cytochrome, functioning in the generation of these oxygen species, has been purified to apparent homogeneity from human polymorphonuclear phagocytes. After solubilization of the cytochrome with Triton X-100, the cell extract was subsequently chromatographed on Blue Sepharose and Sephacryl S-300. The final preparation was maximally purified 170-fold with a specific content of 5.33 +/- 2.03 nmol mg-1 of protein (mean +/- S.D.; n = 7) and a yield of 21 +/- 13% (n = 5). The apparent molecular mass of the nondenatured cytochrome was estimated by gel filtration to be 235 kDa. Upon polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate, a single polypeptide was found with a molecular mass of 127 kDa. From the pyridine hemochrome spectrum 1 protoheme IX/polypeptide was calculated. The light absorbance bands of the dithionite reduced cytochrome were found to be at 558.5 (alpha), 529 (beta), and 426 nm (Soret), and that of the oxidized cytochrome at 413.5 nm. The difference absorbance coefficients are delta epsilon (426.5 - 440 nm) = 160.6 +/- 11 mM-1 cm 1 and delta epsilon (558.5 - 542 nm) = 29.3 +/- 2 mM-1 cm-1 (mean +/- S.D.; n = 5). Carbon monoxide binds to the cytochrome in a time-dependent fashion (maximum binding after 50-60 min). The midpoint potential of the solubilized nonpurified cytochrome is identical to the cytochrome in situ (Em7.0 = -218 +/- 7 mV (mean +/ S.D.; n = 5)). However, purified cytochrome b shows a significantly decreased midpoint potential, estimated at -407 +/- 18 mV (n = 4). The protein does not contain noncovalently bound FAD or FMN, and no spectral evidence was obtained for the presence of covalently bound flavin. Preliminary amino acid analysis of the cytochrome shows a high content of hydrophilic residues. PMID- 3838306 TI - Purification of cartilage-derived growth factor by heparin affinity chromatography. AB - Cartilage-derived growth factor (CDGF) was found to bind tightly to columns of immobilized heparin and could be eluted with concentrations of salt in the order of 1.6-1.8 M NaCl. The molecular weight of CDGF was estimated to be 18,000-20,000 by high performance liquid-size exclusion chromatography. The affinity of CDGF for heparin greatly facilitated its purification. Highly purified CDGF active at about 1-2 ng/ml was obtained when crude cartilage extract was applied to heparin Sepharose and the growth factor activity was recycled over heparin-Sepharose two more times. Analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and silver stain visualization of highly purified CDGF showed one major polypeptide band with a molecular weight of about 19,000 containing over 95% of the protein and one minor polypeptide band containing the rest of the protein. Only the Mr 19,000 polypeptide was active after elution from the polyacrylamide gel. Although CDGF bound tightly to immobilized heparin, it did not bind to immobilized chondroitin sulfate or hyaluronic acid. In addition, CDGF bound to heparin much more tightly than did platelet-derived growth factor even though these two growth factors had similar isoelectric points of about 10. These results suggest that the binding of CDGF to heparin was due to a specific affinity of the 2 molecules for each other. PMID- 3838307 TI - Stabilization of thymic glucocorticoid-receptor complexes by the calcium activated protease inhibitor, calpastatin. AB - We previously described a heat-stable factor from WEHI-7 mouse thymoma, rat liver, spleen, and human chronic lymphocytic leukemia cells that prevents degradation of glucocorticoid-receptor complexes (GRC) in cytosols from rat thymus and acute non-lymphocytic leukemia cells. We now show that the factor has many properties in common with calpastatin, a naturally occurring inhibitor of a family of neutral calcium-activated proteases called calpains. Liver GRC stabilizing activity and calpastatin activity, in addition to surviving boiling, co-chromatography on columns of DEAE-cellulose ion exchange or agarose A-0.5M gel filtration matrices, and have identical isoelectric points of 5.1. This factor should be especially useful for studying GRC function in the presence of calcium. PMID- 3838308 TI - An alternative approach to deoxyoligonucleotides as hybridization probes by insertion of deoxyinosine at ambiguous codon positions. AB - Two deoxyoligonucleotide probes (23-mer and 26-mer) carrying deoxyinosine residues (I) at positions corresponding to ambiguous nucleotides derived from amino acid sequence have been synthesized by the phosphotriester method using a polymer support. The 23-mer and 26-mer corresponded to the mRNA for 8 amino acids from gastrin and 9 amino acids from cholecystokinin, respectively. The dIs have been used where the base in the third position of the amino acid codon is ambiguous. These deoxyoligonucleotides were used as probes for hybridization with colonies containing the corresponding cDNAs or genes. The hybrid formed between a gastrin clone and the 23-mer that harbors 5 dIs was dissociated at 50-55 degrees C, suggesting that deoxyinosine did not significantly effect the stabilization or destabilization of the DNA duplex. A similar result was obtained using the 26-mer that contains 5 dIs and a phage clone DNA of the cholecystokinin gene. Thus oligonucleotide probes with deoxyinosine residues at ambiguous points seem to be useful as hybridization probes for cloning genes for proteins containing amino acids with degenerate codons. PMID- 3838309 TI - Human liver fatty acid binding protein cDNA and amino acid sequence. Functional and evolutionary implications. AB - Human liver fatty acid binding protein (L-FABP) cDNA clones were identified in a liver cDNA library. The two longest clones were completely sequenced. The nucleotide sequence predicts a protein of 127 amino acid residues. Identity of the clones was confirmed by limited amino acid sequence analysis of purified human L-FABP peptides and Edman degradation of radiolabeled in vitro translated FABP. Statistical analysis of the amino acid and mRNA sequences of human L-FABP, rat L-FABP, rat intestinal (I-) FABP, and mouse 422 protein indicates that the human and rat L-FABPs are highly homologous and that L-FABP and I-FABP diverged a long time ago (approximately 650-690 million years ago), although they are more closely related to each other than either of them is to 422 protein. Secondary structure predictions from the primary sequence of human and rat L-FABP reveal a region (residues 12-30) that might be the putative fatty acid binding domain of the two L-FABPs. Knowledge of the primary amino acid sequence of L-FABP and possible functional domains will be pivotal in further defining and understanding the mechanism of ligand binding and transfer by this protein. PMID- 3838310 TI - Regulation of rat yolk sac 25-hydroxy- and 1,25-dihydroxyvitamin D3 24 hydroxylase activities. AB - The yolk sac of the pregnant rat which functions as a true placenta is a target organ for vitamin D. This tissue can hydroxylate in position 24 both 25-hydroxy- and 1,25-dihydroxyvitamin D3 (25-OHD3 and 1,25-(OH)2D3). The present report describes an in vitro model for the study of 1,25-(OH)2D3 action on the further metabolism of 25-OH[3H]D3 and 1,25-(OH)2[3H]D3 by yolk sac. The tissue explants were preincubated with 1,25-(OH)2D3 for 18 h in a serum-free culture medium. Physiological concentrations of 1,25-(OH)2D3 were the most effective in stimulating (7.5-fold) the 1,25-(OH)2D3 24-hydroxylase, while the 25-OHD3 24 hydroxylase stimulation (4-fold) required a 1,25-(OH)2D3 concentration of 10(-7) M. The stimulating effect of 1,25-(OH)2D3 on the 1,25-(OH)2D3 24-hydroxylase was temperature-dependent, and, since its was inhibited by actinomycin D and cycloheximide, required de novo protein synthesis. 1,24,25-(OH)3D3, 25-OHD3, and 24,25-(OH)2D3 were 10- to 1000-fold less potent than 1,25-(OH)2D3 in inducing the 1,25-(OH)2D3 hydroxylase. Our results strongly suggest that 1,25-(OH)2D3 regulated the 1,25-(OH)2D3 24-hydroxylase by a receptor-mediated process. Furthermore, 1,25-(OH)2D3 at 10(-9) M induced within 4 h an increase of its own degradation and the formation of an as yet unidentified major 1,25-(OH)2[3H]D3 metabolite. We conclude that the yolk sac can participate in the regulation of 1,25-(OH)2D3 concentration in the fetoplacental unit. PMID- 3838311 TI - Expression of thymidine kinase and dihydrofolate reductase genes in mammalian ts mutants of the cell cycle. AB - Thymidine kinase and dihydrofolate reductase mRNA levels and enzyme activities were determined in two temperature-sensitive cell lines, tsAF8 and ts13, that growth arrest in the G1 phase of the cell cycle at the restrictive temperature. The levels of thymidine kinase mRNA and enzyme activity increased markedly in both cell lines serum stimulated from quiescence at the permissive temperature. At the nonpermissive temperature, the levels of thymidine kinase mRNA and enzyme activity remain at the low levels of quiescent G0 cells. The levels of dihydrofolate reductase mRNA as well as the enzyme activity also increase when both cell lines are serum stimulated at the permissive temperature. When ts13 cells are serum stimulated at the nonpermissive temperature dihydrofolate reductase enzyme activity declines rapidly and dihydrofolate reductase mRNA is below detectable levels. On the contrary, when tsAF8 cells are serum stimulated at the nonpermissive temperature dihydrofolate reductase enzyme activity increases and mRNA levels are detectable slightly above G0 levels, even though the cells are blocked in the G1 phase. Studies with 2 other cDNA clones (one with an insert whose expression is cell cycle dependent and the other with an insert whose expression is not cell cycle dependent) indicate that the results are not due to aspecific toxicity or the effect of temperature. We conclude that the expression of different genes is affected differently by the ts block in G1, even when these genes are all growth-related. PMID- 3838312 TI - Spatial requirements for location of basic residues in peptide substrates for smooth muscle myosin light chain kinase. AB - The requirement of basic residues as substrate specificity determinants for the chicken gizzard myosin light chain kinase has been studied using synthetic peptide analogs of the local phosphorylation site sequence in the myosin light chains, Lys-Lys-Arg13-Pro-Gln-Arg16-Ala-Thr-Ser19-Asn-Val-Phe- Ala. The basic residue, Arg-16, was found to have a strong influence on the kinetics of phosphorylation similar to that reported previously for the three adjacent residues, Lys-11, Lys-12, and Lys-13 (Kemp, B. E., Pearson, R. B., and House, C. (1983) Proc. Natl. Acad. Sci. U. S. A. 80, 7471-7475). The location of Arg-16 in relation to Ser-19 as well as the distance between Arg-13 and Arg-16 had a profound effect on both the kinetics and the site specificity of phosphorylation. Placement of Arg-16 at position 15 resulted in a complete switch in phosphorylation site specificity from Ser-19 to Thr-18. Increasing the number of alanine residues between Arg-13 and Arg-16 in the model peptide, Lys-Lys-Arg (Ala)n-Arg-Ala-Thr-Ser-Asn-Val-Phe-Ala, also influenced the kinetics and site specificity of peptide phosphorylation. With two or three alanines (n = 2 or 3), the apparent Km was 7.5 and 10 microM, respectively, and 97% of the phosphate was esterified to Ser-19. Increasing or decreasing the number of alanines (n = O to n = 4) was accompanied by an increase in the apparent Km and phosphorylation of both Thr-18 and Ser-19. These results support the concept that both the presence and location of basic residues play an essential role in the substrate specificity of the smooth muscle myosin light chain kinase. PMID- 3838313 TI - Human liver fatty acid binding protein. Isolation of a full length cDNA and comparative sequence analyses of orthologous and paralogous proteins. AB - We have determined the primary structure of human liver fatty acid binding protein from an analysis of a full length cDNA. This 127-residue 14,178-Da protein exhibits a high degree of sequence conservation when compared to its orthologous homologue, rat liver fatty acid binding protein. It appears likely that this polypeptide arose from two intragenic duplication events. Using a variety of computational techniques, we were unable to find any evidence of amphipathic alpha helical domains in this protein nor any sequence similarities to apolipoproteins and serum albumins. A family of paralogous proteins was defined, whose members share a remarkable degree of sequence homology with share a remarkable degree of sequence homology with human liver fatty acid binding protein. These include rat intestinal fatty acid binding protein, the cellular the P2 protein of myelin. It appears that the small cytosolic fatty acid binding proteins have evolved structural features necessary for lipid-protein interaction which are different from those present in some familiar and better studied extracellular sequences. PMID- 3838314 TI - A new generation of Ca2+ indicators with greatly improved fluorescence properties. AB - A new family of highly fluorescent indicators has been synthesized for biochemical studies of the physiological role of cytosolic free Ca2+. The compounds combine an 8-coordinate tetracarboxylate chelating site with stilbene chromophores. Incorporation of the ethylenic linkage of the stilbene into a heterocyclic ring enhances the quantum efficiency and photochemical stability of the fluorophore. Compared to their widely used predecessor, "quin2", the new dyes offer up to 30-fold brighter fluorescence, major changes in wavelength not just intensity upon Ca2+ binding, slightly lower affinities for Ca2+, slightly longer wavelengths of excitation, and considerably improved selectivity for Ca2+ over other divalent cations. These properties, particularly the wavelength sensitivity to Ca2+, should make these dyes the preferred fluorescent indicators for many intracellular applications, especially in single cells, adherent cell layers, or bulk tissues. PMID- 3838315 TI - The protease specificity of heparin cofactor II. Inhibition of thrombin generated during coagulation. AB - 125I-labeled heparin cofactor II (HCII) was mixed with plasma and coagulation was initiated by addition of CaCl2, phospholipids, and kaolin or tissue factor. In the presence of 67 micrograms/ml of dermatan sulfate, radioactivity was detected in a band which corresponded to the thrombin-HCII complex (Mr = 96,000) upon sodium dodecyl sulfate-polyacrylamide gel electrophoresis. No other complexes were observed. The thrombin-HCII complex was undetectable when 5 units/ml of heparin was present or when prothrombin-deficient plasma was used. In experiments with purified proteases, HCII did not significantly inhibit coagulation factors VIIa, IXa, Xa, XIa, XIIa, kallikrein, activated protein C, plasmin, urokinase, tissue plasminogen activator, leukocyte elastase, the gamma-subunit of nerve growth factor, and the epidermal growth factor-binding protein. HCII inhibited leukocyte cathepsin G slowly, with a rate constant of 8 X 10(4) M-1 min-1 in the presence of dermatan sulfate. These results indicate that the protease specificity of HCII is more restricted than that of other plasma protease inhibitors and suggest that the anticoagulant effect of dermatan sulfate is due solely to inhibition of thrombin by HCII. PMID- 3838316 TI - Induction of cytoskeletal vimentin and actin gene expression by a tumor-promoting phorbol ester in the human leukemic cell line K562. AB - The tumor-promoting phorbol ester 12-O-tetradecanoyl phorbol 13-acetate (TPA) was found to induce the biosynthesis and deposition of two cytoskeletal components in the human erythroleukemic cell line K562 with apparent Mr = 55,000 and 46,000. A time course showed that maximal changes in these cytoskeletal components occurred as early as 24 h after treatment and were maintained at least as long as 72 h. By immunoprecipitation, one of the induced cytoskeletal components was identified as vimentin. There was approximately a 10-fold induction of vimentin biosynthesis following TPA treatment. The other TPA-induced protein was found to co-migrate with purified actin in sodium dodecyl sulfate-polyacrylamide gels. Neither of these proteins was induced in the closely related human erythroleukemic cell line, HEL. By in vitro protein synthesis directed by total cellular RNA isolated from K562 cells, induction of vimentin biosynthesis was found to correlate with increases in the level of vimentin mRNA activity. A time course showed that vimentin mRNA activity was detectably elevated as early as 3 h after TPA treatment and reached a maximum by 12 h then the level decreased. By RNA dot blot and Northern gel hybridization using a cloned human actin cDNA, we found that there was also an induction of actin mRNA. A time course showed that there was an elevation of actin mRNA as early as 1 h after TPA treatment. The level then increased to a maximum at 6 h, after which the level decreased. These results are consistent with the induction of vimentin and actin gene transcription by TPA in K562 cells. PMID- 3838317 TI - Modulation of heparin cofactor II activity by histidine-rich glycoprotein and platelet factor 4. AB - Heparin cofactor II is a plasma protein that inhibits thrombin rapidly in the presence of either heparin or dermatan sulfate. We have determined the effects of two glycosaminoglycan-binding proteins, i.e., histidine-rich glycoprotein and platelet factor 4, on these reactions. Inhibition of thrombin by heparin cofactor II and heparin was completely prevented by purified histidine-rich glycoprotein at the ratio of 13 micrograms histidine-rich glycoprotein/microgram heparin. In contrast, histidine-rich glycoprotein had no effect on inhibition of thrombin by heparin cofactor II and dermatan sulfate at ratios of less than or equal to 128 micrograms histidine-rich glycoprotein/microgram dermatan sulfate. Removal of 85 90% of the histidine-rich glycoprotein from plasma resulted in a fourfold reduction in the amount of heparin required to prolong the thrombin clotting time from 14 s to greater than 180 s but had no effect on the amount of dermatan sulfate required for similar anti-coagulant activity. In contrast to histidine rich glycoprotein, purified platelet factor 4 prevented inhibition of thrombin by heparin cofactor II in the presence of either heparin or dermatan sulfate at the ratio of 2 micrograms platelet factor 4/micrograms glycosaminoglycan. Furthermore, the supernatant medium from platelets treated with arachidonic acid to cause secretion of platelet factor 4 prevented inhibition of thrombin by heparin cofactor II in the presence of heparin or dermatan sulfate. We conclude that histidine-rich glycoprotein and platelet factor 4 can regulate the antithrombin activity of heparin cofactor II. PMID- 3838319 TI - A dissecting aneurysm in the bulbus arteriosus of a brook stickleback, Culaea inconstans. AB - In the bulbus arteriosus of an adult, male brook stickleback, C. inconstans, one of 100 caught in July 1982 from Lake 200, near Erickson, Manitoba, Canada, there was a dissecting aneurysm similar to those in the human aorta. The vessel also showed the classic signs of Erdheim's "idiopathic cystic medionecrosis", but its lumen was dilated and the lesion could thus also be regarded as a fusiform aneurysm. In the proximal half of the bulbus the endothelial lining was torn transversely and blood had extended into the middle layer of the wall to create 2 concentric and longitudinal channels which re-entered the lumen distally at approximately the mid-point of the bulbus. Except near the bulbar-aortic junction, the amount of elastica and (probably) smooth muscle was drastically reduced, the wall was infiltrated with amorphous deposits of mucoid substances, there were focal, cyst-like areas, and the normally tall and intensely PAS positive, endothelial cells were flattened and poorly staining. There was no evidence of cystic medionecrosis in the bulbus arteriosus of other fish without dissecting aneurysms. This is thought to be the first report of a dissecting aneurysm in any lower vertebrate. Evidently, such an aneurysm can occur in a vessel without vasa vasorum, and in a very small animal (48 mm long), where the wall tension in its blood vessels must be extremely low compared with that in the human aorta. PMID- 3838318 TI - Studies on the mechanism of Sn-protoporphyrin suppression of hyperbilirubinemia. Inhibition of heme oxidation and bilirubin production. AB - The synthetic heme analogue Sn-protoporphyrin is a potent competitive inhibitor of heme oxygenase, the rate-limiting enzyme in heme degradation to bile pigment, and can entirely suppress hyperbilirubinemia in neonatal animals and significantly reduce plasma bilirubin levels in a variety of circumstances in experimental animals and man. To further explore the mechanism by which this metalloporphyrin reduces bilirubin levels in vivo, we have examined its effects on bilirubin production in bile duct-cannulated rats, in which bilirubin derived from heme catabolism is known to be rapidly excreted in bile. The administration of Sn-protoporphyrin (10-50 mumol/kg body weight) was followed by prompt (within approximately 1 h) and sustained (up to at least 18 h) decreases in bilirubin output, to levels 25-30 percent below the levels of bilirubin output in control bile fistula animals. The metalloporphyrin had no effect on bile flow or the biliary output of bile acids. Infusions of heme, which is taken up primarily in hepatocytes, or of heat-damaged erythrocytes, which are taken up in reticuloendothelial cells, resulted in marked increases in bilirubin output in bile in control animals; these increases were completely prevented or substantially diminished by Sn-protoporphyrin administration. By contrast, the metalloporphyrin did not alter the high levels of bilirubin in plasma and bile that were achieved in separate experiments by the constant (16 h) infusion of unconjugated bilirubin to bile duct-cannulated rats. Thus, Sn-protoporphyrin exerts no major effects on the metabolic disposition of preformed bilirubin. Heme oxygenase activities were markedly decreased in microsomal preparations from liver, spleen, and kidneys in these experiments, to a degree comparable to the decreases we have observed in the intact rat. We also demonstrated that a substantial proportion (19-35%) of a dose of Sn-protoporphyrin is promptly excreted in bile and that the time course of biliary excretion of this compound more closely reflects plasma concentrations of the metalloporphyrin, which decline rapidly, rather than concentrations in liver, which are considerably more persistent. These results indicate that Sn-protoporphyrin substantially reduces the in vivo production of bilirubin from the degradation of endogenous as well as exogenous heme in the rat. Moreover, this inhibitory effect of the synthetic metalloporphyrin on bilirubin production occurs in both hepatocytes and reticuloendothelial cells, which are the major tissue sites for bilirubin formation. In other studies, we have established that heme oxygenase blockade by Sn-protoporphyrin leads to a marked and rapid excretion of heme into bile presumably because the synthetic metabolism to bile pigment and making it available for excretion via the biliary system in to the gut, These studies strongly suggest that Sn-protoporphyrin diminishes hyperbilirubinemia in animals and man by inhibiting the production of the bile pigment in vivo, and that its principal mode of action involves a potent and sustained competitive inhibition of heme oxygenase. PMID- 3838320 TI - Experimental studies on cysts in the prolactin zone of the pituitary in the 9 spined stickleback, Pungitius pungitius L. AB - The incidence of pituitary cysts in the prolactin zone of the stickleback, P. pungitius, cannot be reduced, either compared with laboratory controls or with wild fish, by keeping animals in conditions of minimal osmotic stress (1/3 strength SW). As there were no signs of cyst repair in any animal and as previous attempts to reduce cyst incidence also failed, it is likely that animals with cysts cannot lose them. The study also showed that keeping fish in captivity and handling them each day can induce cysts to appear in the pituitary. Records of fish mortality and the number of cysts per gland and their size and locularity suggest that animals with large cysts (greater than 70 micron in diameter) survive better in 1/3 strength SW and that the factors causing cysts to appear in the pituitary may not be those that induce them to enlarge. PMID- 3838321 TI - Absorption of minocycline hydrochloride and tetracycline hydrochloride. Effect of food, milk, and iron. AB - Serum concentrations of tetracycline hydrochloride and minocycline hydrochloride were compared when administered with water, milk, a meal, and 300 mg ferrous sulfate in two groups of eight volunteers. Absorption of both antibiotics was significantly decreased by administration with iron (77% inhibition with minocycline and 81% with tetracycline), milk (27% inhibition with minocycline, 65% with tetracycline), and food (13% inhibition with minocycline and 46% with tetracycline). The inhibitory effect on absorption with food and milk was significantly greater for tetracycline than for minocycline. PMID- 3838322 TI - A comparison of three speech coding strategies using an acoustic model of a cochlear implant. AB - Three alternative speech coding strategies suitable for use with cochlear implants were compared in a study of three normally hearing subjects using an acoustic model of a multiple-channel cochlear implant. The first strategy (F2) presented the amplitude envelope of the speech and the second formant frequency. The second strategy (F0 F2) included the voice fundamental frequency, and the third strategy (F0 F1 F2) presented the first formant frequency as well. Discourse level testing with the speech tracking method showed a clear superiority of the F0 F1 F2 strategy when the auditory information was used to supplement lipreading. Tracking rates averaged over three subjects for nine 10 min sessions were 40 wpm for F2, 52 wpm for F0 F2, and 66 wpm for F0 F1 F2. Vowel and consonant confusion studies and a test of prosodic information were carried out with auditory information only. The vowel test showed a significant difference between the strategies, but no differences were found for the other tests. It was concluded that the amplitude and duration cues common to all three strategies accounted for the levels of consonant and prosodic information received by the subjects, while the different tracking rates were a consequence of the better vowel recognition and the more natural quality of the F0 F1 F2 strategy. PMID- 3838323 TI - Endless loop tachycardia started by an atrial premature complex in a patient with a dual chamber pacemaker. AB - In a patient with a dual chamber pacemaker that senses in both the atrium and ventricle (VDD, DDD), a ventricular depolarization temporally displaced from a P wave can cause retrograde atrial activation and initiate an endless loop pacemaker-mediated tachycardia. A case in which an endless loop tachycardia was initiated by an end-diastolic atrial premature complex is reviewed. Retrograde conduction occurred because of the change in the temporal relation of atrial sensing and atrioventricular (AV) node depolarization. The implanted pacemaker did not have the capability of atrial refractory programmability. Atrial refractory interval extension, which occurs in this model after a ventricular premature complex to protect against a retrograde P wave, was not invoked since the tachycardia was begun by an atrial rather than a ventricular premature complex. The tachycardia was controlled by shortening the programmable AV delay. The mechanism of tachycardia induction and its management are outlined. Atrial refractory programmability is required in all VDD or DDD pacemakers. PMID- 3838325 TI - 'Cardbox'--an ideal program for clinical filing. PMID- 3838326 TI - Ashton Tate's dBASE II as a patient-index manager. PMID- 3838324 TI - Laser ablation of human atherosclerotic plaque without adjacent tissue injury. AB - Seventy samples of human cadaver atherosclerotic aorta were irradiated in vitro using a 308 nm xenon chloride excimer laser. Energy per pulse, pulse duration and frequency were varied. For comparison, 60 segments were also irradiated with an argon ion and an Nd:YAG (neodymium:yttrium aluminum garnet) laser operated in the continuous mode. Tissue was fixed in formalin, sectioned and examined microscopically. The Nd:YAG and argon ion-irradiated tissue exhibited a central crater with irregular edges and concentric zones of thermal and blast injury. In contrast, the excimer laser-irradiated tissue had narrow deep incisions with minimal or no thermal injury. These preliminary experiments indicate that the excimer laser vaporizes tissue in a manner different from that of the continuous wave Nd:YAG or argon ion laser. The sharp incision margins and minimal damage to adjacent normal tissue suggest that the excimer laser is more desirable for general surgical and intravascular uses than are the conventionally used medical lasers. PMID- 3838327 TI - Analysis of class I MHC antigens in the rat by monoclonal antibodies. AB - Monoclonal antibodies (mAb) were made against class I MHC antigens of the i (mAb 42,70,39) and u (mAb 68-D) haplotypes in the rat by using specific strain combinations in order to obtain reagents for identifying the products of the RT1.An, RT1.Au, and RT1.Eu loci. These antibodies were hemagglutinating only; were IgG except for mAb 68-D3, which had a defective heavy chain; reacted identically with MHC-congenic strains and with their inbred donor strains; and precipitated class I MHC antigens. Strain distribution, sequential immunoprecipitation, and peptide mapping studies were used to define the specificities of the mAb, and the assignments were checked by comparing the specificities of the mAb with those of haplotype-specific alloantisera. The specificities were the following: mAb 42, An; mAb 68-D, Au; mAb 70, Eu; and mAb 39, an antigen encoded by a locus different from A and E. This new locus was designated RT1.F, and the allele detected by mAb 39, as Fa. The serologic data place RT1.F between RT1.A and RT1.D. The plasma membranes of DA.1I(BI) lymphocytes contain comparable amounts of An, Eu, and Fa antigens but express them on the cell surface in the order An much greater than Eu greater than Fa. PMID- 3838328 TI - The use of colloidal gold for screening monoclonal antibodies to cell surface antigens. AB - An immunogold method in Terasaki plates is described which allows accurate and sensitive visualization of the binding of monoclonal antibodies to cell surface antigens and is suitable for large scale screening. Monolayers of fixed cells are prepared in the wells. The binding of monoclonal antibodies is detected by a protein A gold complex. The cell-bound gold can be visualized by either optical or transmission electron microscopy. The results obtained with various monoclonal antibodies are presented. PMID- 3838329 TI - [Prenatal assessment of fetal lung maturity by the stable microbubble method- fundamental and clinical study]. AB - Diagnostic value of RDS was investigated by the Stable Microbubble Method. When this method was applied to the tracheal fluid of fetuses in rabbit (28 days of gestation), the PV curve and lung-thoracic compliance showed mature patterns in the test results for weak, medium, and strong as compared with those for zero and very weak in which they showed an immature pattern. Results by this method correlated with the DSPC level in human amniotic fluid, and were little affected by the contamination of meconium or fresh plasma. Amounts of DSPC were 0.69 +/- 0.05 (mg/dl, Mean +/- SE) in zero, 1.19 +/- 0.15 in very weak, 3.99 +/- 5.06 in weak, 6.58 +/- 2.01 in medium, and 7.70 +/- 1.15 in strong test results. The coefficient of correlation was 0.56 (p less than 0.01). In the clinical study, when the mature level was arbitrarily defined as weak, the diagnostic accuracy was 76.8%, false negative rate was 0%, and false positive rate was 27.5%. If the mature level was defined as very weak, the diagnostic accuracy was 94.2% and the false positive rate was 3.4%. But the false negative rate increased to 18.8%. The diagnostic accuracy of this method was higher than the double shake test (72.2%), and was as high as the measurement of the DSPC level (92.0%). PMID- 3838330 TI - Pharmacokinetics and biologic effects of calcitriol in normal humans. AB - The dose response and pharmacokinetics of orally administered calcitriol were investigated in normal humans. In one protocol, six volunteers received calcitriol 0.25 micrograms twice a day, 0.5 micrograms daily, and 0.5 micrograms twice a day, in successive weeks. Peak plasma levels of 1,25(OH)2D occurred 4 to 8 hours after ingestion of a single dose of 0.5 micrograms, with a return to baseline within 24 hours. The 8:00 AM calcitriol plasma levels were raised only when the drug was given twice daily. Urinary calcium excretion (UCa) was significantly increased from 199 +/- 19 mg/24 hr during the control period to similar levels of 302 +/- 26 mg/24 hr after 0.25 microgram twice a day and 284 +/ 31 mg/24 hr after 0.50 microgram daily. With 0.50 microgram twice a day, UCa was 417 +/- 36 mg/24 hr, a value greater than after the lower doses (p less than 0.05). In another protocol, fourteen volunteers received calcitriol 0.25 microgram, 0.5 microgram, and 1.0 microgram twice a day each for 14 days with intervening control periods of 2 weeks. A dose-related response in urinary calcium/creatinine excretion occurred. Thus, UCa (milligrams calcium per milligram creatinine) increased with calcitriol from 0.13 +/- 0.014 mg to 0.15 +/ 0.018 mg with 0.25 microgram twice a day, from 0.13 +/- 0.010 mg to 0.22 +/- 0.022 mg with 0.5 microgram twice a day, and from 0.12 +/- 0.012 mg to 0.23 +/- 0.012 mg with 1 microgram twice a day (p less than 0.05 with 0.25 microgram, p less than 0.01 with 0.5 and 1 microgram twice a day).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838331 TI - Telephone use by a multi-channel cochlear implant patient. An evaluation using open-set CID sentences. AB - A totally deaf person with a multiple-channel cochlear prosthesis obtained open set speech discrimination using the telephone. CID Everyday Sentences were presented by telephone to the patient, who repeated an average of 21 per cent of key words correctly on the first presentation, and 47 per cent when a repeat of the sentences was permitted. This result is consistent with the patient's reports of telephone usage. PMID- 3838332 TI - Using the microcomputer as a tool for learning to read and write. PMID- 3838333 TI - "State action" doctrine as a defense in antitrust challenges. PMID- 3838334 TI - Characterization of profiles of salivary progesterone concentrations during the luteal phase of fertile and subfertile women. AB - Salivary progesterone concentrations were measured in daily samples collected between 08.00 and 09.00 h throughout the menstrual cycle of women with a history of fertility. The luteal-phase salivary progesterone profiles in these normally menstruating, healthy women were characterized using a computer program based on a cumulative sum procedure. This method of statistical analysis led to the development of a 'progesterone boundary diagram', the inner and outer domains of which distinguished between the profiles of salivary progesterone considered compatible with fertility, and those observed in subfertile women attending an infertility clinic. PMID- 3838335 TI - Analysis of human blood monocyte activation at the level of gene expression. Expression of alpha interferon genes during activation of human monocytes by poly IC/LC and muramyl dipeptide. AB - Human monocytes were activated to secrete alpha interferon (IFN-alpha) by poly IC/LC but not by other monocyte activators, such as muramyl dipeptide (MDP). In contrast, monocytes were activated to secrete fibroblast growth factor (FGF) release by MDP but not by poly IC/LC. The amount of total RNA present in unactivated and activated human monocytes was similar. Using two 32P-labeled cDNA probes (pLM001 and HuIFN-alpha 2) for human IFN-alpha genes in hybridization studies, we analyzed messenger RNA species from this gene family in activated human monocytes. After activation with poly IC/LC, two other mRNA species (2.8 and 5.5 kb) were detected in addition to the 1.0 kb mRNA normally associated with IFN-alpha secretion. Unexpectedly, monocytes activated with MDP also contained 2.8 kb IFN-alpha mRNA. There was associated with this 2.8 kb IFN-alpha mRNA, found in MDP-activated monocytes, appreciable levels of intracellular IFN-alpha activity in the absence of detectable secreted IFN-alpha. Thus the secretion of IFN-alpha in activated human monocytes can be correlated with the appearance of a 1.0 kb mRNA species after poly IC/LC exposure. Secretion appears to be defective in MDP-stimulated monocytes even though they contain active intracellular IFN alpha apparently translated from the 2.8 kb mRNA. PMID- 3838336 TI - Purification and characterization of the respiratory syncytial virus fusion protein. AB - The fusion protein of respiratory syncytial virus was purified by affinity chromatography using a monoclonal antibody. Under various conditions the protein was recovered as a 145K dimer or a 70K monomer. The 70K monomer was composed of disulphide-linked fragments of 48K and 23K. Polyclonal rabbit serum produced to the dimerized fusion protein neutralized virus but did not inhibit fusion, while rabbit serum to the 2-mercaptoethanol-treated dimerized protein neutralized virus and inhibited fusion of infected cells. Only the latter serum strongly recognized the 23K fragment when studied by Western blot analysis. PMID- 3838337 TI - cDNA cloning of the messenger RNAs of five genes of canine distemper virus. AB - Messenger RNAs from Vero cells infected with the Onderstepoort strain of canine distemper virus (CDV) were cloned into the PstI site of plasmid pAT153. Total polyadenylated RNA was used and resulting clones were screened with 32P-labelled cDNA probes from infected and mock-infected cells. The virus specificity of the clones was proven by Northern blot hybridization and by ability to select radioactive virus mRNAs labelled in vivo in the presence of actinomycin D. Clones from the N, P and M genes of CDV were identified by hybrid select translation; clones which presumably represent the H and F genes were also obtained. The clones allowed a designation of the major viral mRNA bands. Bicistronic mRNAs were identified, and their selection by various clones suggests a gene order of 3'-N-P-M-70K-65K-L-5' for this virus. PMID- 3838338 TI - Coronavirus MHV-JHM mRNA 5 has a sequence arrangement which potentially allows translation of a second, downstream open reading frame. AB - The sequence of a 5'-proximal region of mRNA 5 of coronavirus MHV-JHM was determined by chain-terminator sequencing of cDNA subcloned in M13. The sequence contained two long open reading frames of 321 bases and 264 bases, overlapping by five bases but in different frames. Both open reading frames are initiated by AUG codons in sequence contexts that are relatively infrequently used as initiator codons. The smaller, downstream open reading frame encoded a neutral protein (mol. wt. 10200) with a hydrophobic amino terminus. The larger, 5'-proximal open reading frame encoded a basic protein (mol. wt. 12400) which lacks internal methionine residues. With the exception of the AUG codon initiating the downstream open reading frame, no internal AUG codons were found within the sequence covered by the upstream open reading frame. These results suggest that the MHV-JHM mRNA 5 is translated to produce two proteins by a mechanism involving internal initiation of protein synthesis. Preliminary evidence is presented showing that the downstream open reading frame is functional in vivo. PMID- 3838339 TI - Effects of L-DOPA on the concentrations of free and sulfoconjugated catecholamines in plasma, cerebrospinal fluid, urine, and central and peripheral nervous system tissues of the rat. AB - The effects of subcutaneous injection of L-beta-3,4-dihydroxyphenylalamine (L DOPA) on the concentrations of the catecholamines and catecholamine sulfates in the central and peripheral nervous systems of the rat were studied. The results showed that free 3,4-dihydroxyphenylethylamine (DA, dopamine) increased rapidly and markedly in the hypothalamus and striatum after L-DOPA but DA sulfate did not change. Increased concentrations of DA sulfate were detected in the CSF and in the plasma, where it reached a concentration of 130.8 +/- 12.8 ng/ml at 2 h, seven times the level of free DA (19.1 +/- 2.9 ng/ml). In the kidney the ratio of DA sulfate to free DA was reversed in favor of free DA. Urine samples of L-DOPA treated rats showed a higher increase of free DA than DA sulfate, but free norepinephrine (NE) and NE sulfate remained unchanged. Concentrations of free DA and free NE in the adrenal glands of L-DOPA-treated rats showed no change. Adrenal DA sulfate and NE sulfate were not detectable in the control and L-DOPA treated rats, suggesting that the adrenal glands lack the capacity to take up or store catecholamines and their sulfate counterparts from the plasma. PMID- 3838340 TI - A trifluoromethylphenyl piperazine derivative with high affinity for 5 hydroxytryptamine-1A sites in rat brain. AB - The inhibition of [3H]5-hydroxytryptamine [( 3H]5-HT) binding in rat brain by 1 [2-(3-bromoacetamidophenyl)ethyl]-4-(3-trifluoromethylphenyl) piperazine (BrAcTFMPP) and that by spiperone were compared. Spiperone inhibition of [3H]5-HT binding in cortex was consistent with displacement from two sites with dissociation constants (KD) of 24 nM (5-HT-1A site) and 19 microM (5-HT-1B site) for spiperone. BrAcTFMPP also discriminated two subpopulations of [3H]5-HT binding sites with dissociation constants of 0.5 nM and 146 nM for the compound. The proportion of high-affinity sites for each compound represented about 35% of the specific [3H]5-HT binding. In the presence of 1 microM spiperone, a concentration that saturates the 5-HT-1A sites while having a minimal effect on 5 HT-1B sites, BrAcTFMPP displaced [3H]5-HT from a single site with a KD for BrAcTFMPP of 145 nM. The inhibition of [3H]5-HT binding by spiperone in the presence of 30 nM BrAcTFMPP was best fit by a single-site model with a KD of 21 microM for spiperone. In corpus striatum, 5-HT-1A sites, as defined with spiperone, represented 15% of the specific [3H]5-HT binding and 30 nM BrAcTFMPP also blocked about 15% of the binding. A significant difference between spiperone and BrAcTFMPP was their affinity for 5-HT-2 receptors. BrAcTFMPP (KD = 41 nM) had an 80-fold lower affinity for these sites than spiperone (KD = 0.5 nM). Thus, BrAcTFMPP and spiperone discriminate the same two subpopulations of [3H]5-HT binding sites and BrAcTFMPP displays a high affinity and a selectivity for 5-HT 1A sites versus both 5-HT-1B and 5-HT-2 sites. PMID- 3838341 TI - Identification of a proenkephalin precursor in striatal tissue. AB - Recent studies have supported the suggestion that proenkephalin is the same in both adrenal medulla and brain. However, although previous investigations have characterized enkephalin-containing adrenal intermediates derived from proenkephalin, as yet no such intermediates have been isolated from the brain. This has led to the belief that the processing of proenkephalin in the brain is extremely rapid and enkephalin-containing intermediates do not accumulate. In this investigation Sephacryl-300 gel filtration chromatography of guinea pig striata, extracted in 8 M urea, demonstrated several peaks of both bioactive and immunoreactive enkephalin-like peptides after enzymatic digest (trypsin followed by carboxypeptidase B). Comparable profiles were obtained using rat and bovine striatal tissue. In guinea pig the major species emerging from gel filtration, eluting with an apparent molecular weight of 29,000, represented approximately 9% of the total (methionine) enkephalin immunoreactivity. It had an apparent pI of 5.0 when subjected to chromatofocusing. This species was further characterized using sodium dodecyl sulphate-polyacrylamide gel electrophoresis and nitrocellulose blotting techniques as well as highly specific radioimmunoassays to (Met5)-enkephalin, (Leu5)-enkephalin, and (Met5)-enkephalin-Arg6-Phe7. This species was found to contain these opioid peptides in an approximately 6:1:1 ratio, respectively, and to have an apparent molecular weight of 31,000. It was also indicated that (Met5)-enkephalin-Arg6-Phe7 constituted the C-terminal seven residues of this molecule. PMID- 3838342 TI - Restricted transport of vitamin D and A derivatives through the rat blood-brain barrier. AB - The present studies measure the transport of retinol, retinoic acid, 1,25 dihydroxyvitamin D3 [1,25-(OH)2D3], and 25-hydroxyvitamin D3 [25-(OH)D3] through the rat brain capillary endothelial wall, i.e., the blood-brain barrier (BBB). The vitamin A and D derivatives bind both to albumin and to specific high affinity binding proteins in plasma. In the presence of physiologic concentrations of plasma proteins, the extraction by brain of all four compounds was 5% or less. PMID- 3838343 TI - Cyclophosphamide versus 5-fluorouracil, doxorubicin, and mitomycin C (FAM') in the treatment of hormone-resistant metastatic carcinoma of the prostate: a preliminary report of a randomized trial. AB - There is no evidence that combination chemotherapy is superior to single agents in the treatment of advanced, hormone-resistant carcinoma of the prostate. We are reporting the preliminary results of a randomized trial comparing cyclophosphamide (CTX) with a combination of 5-fluorouracil, doxorubicin and mitomycin C (FAM'). Thirty-one patients were randomized and 30 of them were evaluable for response. Sixteen patients were treated with CTX and 14 with FAM'. On the CTX arm, eight (50%) of the patients had stable disease (SD) and eight (50%) had progressive disease (PD). On the FAM' arm, one (7%) patient had partial response (PR), five (36%) patients had SD and eight (57%) failed to respond. The difference in response rates between the two regimens was not significant (P greater than .72). The median time to progression (MTP) of all patients treated with CTX was six weeks and the MTP of patients treated with FAM' was 16 weeks (P less than .007). This difference in MTP could be explained in part by the unequal time to reevaluation between the two regimens. The MTP of the responders on CTX however, was 13 weeks, while for FAM' it was 33 weeks (P = .014). This difference suggests that FAM' has superior activity to CTX. Pain alleviation was seen in 25% of patients treated with CTX and in 64% of those treated with FAM' (P less than .01). Toxicity was tolerable on both regimens. We conclude that CTX and FAM' have similar response rates. Patients treated with FAM' enjoyed longer MTP and greater pain alleviation than those treated with CTX. PMID- 3838344 TI - Evidence for differential localization of noradrenaline and neuropeptide Y in neuronal storage vesicles isolated from rat vas deferens. AB - Using the technique of homogenization and subsequent density gradient centrifugation combined with ultrastructural analysis, the subcellular localization of noradrenaline and neuropeptide Y (NPY) was studied in vas deferens of castrated male rats. Noradrenaline showed two peaks in the gradient: one major peak at low density and another at high density. Only one NPY peak was seen, which coincided with the high density peak of noradrenaline. Electron microscopic analysis revealed high proportions of small and large vesicles in the light and heavy fractions, respectively. The present results indicate a differential subcellular localization of noradrenaline and NPY in the noradrenergic nerve endings of vas deferens. Thus, small vesicles seem to contain only noradrenaline, whereas the large vesicles may contain both noradrenaline and NPY. PMID- 3838345 TI - Characterization of the prodynorphin and proenkephalin neuropeptide systems in rat hippocampus. AB - Opioid peptides derived from prodynorphin were localized immunocytochemically to dentate granule cells and mossy fibers of the rat hippocampus with antisera against dynorphin A(1-17) and dynorphin B. Extracts of microdissected hippocampal regions were resolved by reverse phase and molecular exclusion chromatography to identify the molecular forms of the dynorphin A immunoreactivity and to quantify regional contents. Results demonstrated that the relative concentration of dynorphin A within each dissected region of hippocampus agreed well with the distribution of dynorphin A detected by immunocytochemical methods. Immunostaining of proenkephalin-derived opioid peptides, [Leu5]enkephalin and bovine adrenal medullary peptide-22P, was concentrated in cell bodies of the entorhinal cortex, nerve fibers in the perforant pathway, and terminals in the outer molecular layer of the dentate gyrus. Light immunostaining of granule cells and mossy fibers with these antisera was also found. The relative concentration of [Leu5]enkephalin immunoreactivity in each microdissected region of the hippocampus also agreed well with the distribution of [Leu5]enkephalin immunostaining. Chromatography of hippocampal regional extracts demonstrated that the immunoreactivity measured was due to the presence of authentic [Leu5]enkephalin. The probable neurotransmitter function of both [Leu5]enkephalin and dynorphin A was shown by their calcium-dependent release after in vitro depolarization of hippocampal tissue. The reported presence of beta-endorphin in hippocampus was not verified. Comparison of the hippocampal distribution and content of prodynorphin and proenkephalin-derived opioids suggests that separate populations of neurons containing these two peptide families form distinct neurotransmitter systems of roughly equal concentration. PMID- 3838346 TI - Calcium and phosphate metabolism in children with idiopathic hypoparathyroidism or pseudohypoparathyroidism: effects of 1,25-dihydroxyvitamin D3. AB - Two children with congenital hypoparathyroidism and two children with pseudohypoparathyroidism were given maintenance doses of 15 to 45 ng/kg/day 1,25 dihydroxyvitamin D3 for a total of 255 months. The urinary calcium excretion showed an upward elevation after the first 2 years of treatment but was not significantly higher than that in 10 normal control subjects. The renal threshold for phosphate excretion stayed within the normal ranges compared with control values. Two hypercalcemic and two hypocalcemic episodes occurred during this period of treatment. Hypercalcemia was reversed within 1 week after withdrawal of 1,25-dihydroxyvitamin D3. Hypocalcemia was countered by increasing the dose of 1,25-dihydroxyvitamin D3. Renal functions were not adversely affected, as estimated by creatinine clearance and reciprocals of serum creatinine concentrations. The mean serum calcium concentration during 1,25-dihydroxyvitamin D3 treatment was significantly higher (P = 0.001) compared with that obtained during vitamin D2 treatment at a dose of 500 to 3000 IU/kg/day. These data provide additional support for the long-term use of 1,25-dihydroxyvitamin D3 in idiopathic hypoparathyroidism and pseudohypoparathyroidism. PMID- 3838348 TI - Food intolerance--a general paediatrician's view. PMID- 3838347 TI - Low-dose 131I in treatment of Graves' disease. AB - One hundred and sixty-four patients with Graves' disease were treated with low dose radioiodine (2 mCi), with a mean follow up of 4 1/2 years. At this time 74 (45%) were euthyroid having had a single dose, with a total of 131 (80%) being controlled with one or more doses. Three (2%) were still toxic but their mean follow up was only 3 years. Thirty (18%) were rendered hypothyroid, two-thirds of these after a single dose of 2 mCi 131I. The one-year incidence of hypothyroidism was 6%, with an incidence at 6 years of 20%. Previous surgery, medical treatment and thyroid antibody status appeared to have no influence on the outcome. PMID- 3838349 TI - Intracellular processing of the Newcastle disease virus fusion glycoprotein. AB - The fusion glycoprotein (Fo) of Newcastle disease virus is cleaved at an intracellular site (Nagai et al., Virology 69:523-538, 1976) into F1 and F2. This result was confirmed by comparing the transit time of the fusion protein to the cell surface with the time course of cleavage of Fo. The time required for cleavage of half of the pulse-labeled Fo protein is ca. 40 min faster than the half time of the transit of the fusion protein to the cell surface. To determine the cell compartment in which cleavage occurs, use was made of inhibitors which block glycoprotein migration at specific points and posttranslational modifications known to occur in specific cell membranes. Cleavage of Fo is inhibited by carbonyl cyanide m-chlorophenylhydrazone; thus, cleavage does not occur in the rough endoplasmic reticulum. Monensin blocks the incorporation of Newcastle disease virus glycoproteins into virions and blocks the cleavage of the fusion glycoprotein. However, Fo cannot be radioactively labeled with [3H] fucose, whereas F1 is readily labeled. These results argue that cleavage occurs in the trans Golgi membranes or in a cell compartment occupied by glycoproteins quite soon after their transit through the trans Golgi membranes. The implications of the results presented for the transit times of the fusion protein between subcellular organelles are discussed. PMID- 3838350 TI - Use of antibodies directed against synthetic peptides for identifying cDNA clones, establishing reading frames, and deducing the gene order of measles virus. AB - A number of cDNA clones complementary to measles virus mRNA and 50S genome RNA have been generated. These clones have been mapped by restriction enzyme analysis and were subsequently sequenced by the method of Maxam and Gilbert (A. M. Maxam and W. Gilbert, Methods Enzymol. 65:499-560, 1980). Computer analysis of these DNA sequences revealed open reading frames which potentially could code for a number of gene products. Portions of these putative polypeptides were synthesized, and rabbit antibodies directed against peptide-hemocyanin conjugates were produced. These antibodies were used to immunoprecipitate virus-specific polypeptides which were identified by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. For each of the antisera tested, a unique protein was precipitated whose migration on polyacrylamide gels corresponded to standard gene products identified by monoclonal antibodies and antisera against measles virus. By using this method, we were able to assign the coding regions of cDNA clones to specific protein products and, subsequently, to order the genes of the 3' terminal third of measles genome RNA. PMID- 3838351 TI - The envelope-associated 22K protein of human respiratory syncytial virus: nucleotide sequence of the mRNA and a related polytranscript. AB - We recently determined that respiratory syncytial virus (strain A2) encodes a fourth unique envelope-associated virion protein that has molecular weight of approximately 24,000, as estimated by gel electrophoresis. The nucleotide sequence of the mRNA encoding this novel protein has now been determined from five cDNA clones, including three that contain the complete mRNA sequence. The complete mRNA sequence is 957 nucleotides, exclusive of polyadenylate, and contains two partially overlapping open reading frames. The 5'-proximal open reading frame is favored for utilization by the criteria of the location and sequence of its translational start site. Furthermore, the calculated molecular weight of the encoded protein, 22,153, is in agreement with the previous estimate of 24,000 for the authentic protein identified by hybrid selection and in vitro translation. The sequence of the predicted protein, now designated the 22K protein, contains 194 amino acids, is relatively hydrophilic, and appears to be the most basic of the respiratory syncytial virus proteins. The mRNA also contains a second, internal open reading frame which would encode a protein of 90 amino acids. However, no evidence for this translation product is known. The first nine nucleotides in the mRNA sequence, 5'-GGGGCAAAU, are identical to the conserved sequence identified previously at the 5' termini of seven other respiratory syncytial viral mRNAs; the sequence at the 3' end of the 22K mRNA, 5'. . . AGUUAUUU-polyadenylate, contains the elements of the previously identified 3'-terminal consensus sequence for respiratory syncytial virus mRNAs, AGUUAA(N)1-4-polyadenylate (P. L. Collins, Y. T. Huang, and G. W. Wertz, Proc. Natl. Acad. Sci. U.S.A. 81:7683-7687). In addition, we present and describe the intergenic sequence of a dicistronic RNA derived from readthrough of the F and 22K protein genes. PMID- 3838352 TI - [Inhibition of platelet aggregation and thromboxane formation by the calcium antagonist nisoldipine following a single oral dose of 10 mg. A double-blind study in healthy probands]. AB - The influence of the calcium antagonist nisoldipine on collagen-induced platelet aggregation and platelet thromboxane formation was studied ex vivo in healthy male volunteers in a double-blind, placebo-controlled crossover design. Measurements of general haemodynamics, immunoreactive 6-oxo-prostaglandin F1 alpha and thromboxane B2 ex vivo and collagen-induced (0.6 and 2.5 micrograms/ml) platelet aggregation were performed immediately before (time 0), 0.5 h, 1 h and 2 h after ingestion of 10 mg nisoldipine or an identical placebo tablet. Compared with the control response at time 0, administration of nisoldipine resulted in a significant inhibition of both low-collagen-induced platelet aggregation and formation of immunoreactive thromboxane B2 at time 0.5 h. There were no changes in heart rate or systolic blood pressure but a significant decrease in diastolic blood pressure by nisoldipine at 1 h. No such change was obtained with placebo and there were also no alterations with nisoldipine in platelet aggregation and thromboxane formation after stimulation by high-dose collagen at this or any other time of the study. The data demonstrate a platelet-inhibitory potential of nisoldipine in healthy men which is probably related to an increased resistance of the platelet membrane against foreign stimuli. PMID- 3838354 TI - Cochlear implant: clinical status, 1985. PMID- 3838353 TI - Postirradiation soft tissue sarcoma occurring in breast cancer patients: report of seven cases and results of combination chemotherapy. AB - Seven cases of soft tissue sarcoma developing after primary or postoperative radiotherapy for breast carcinoma are reported. The sarcomas occurred within the irradiated volume, after a latent period of 4-26 years. These cases conform well to established criteria for the diagnosis of radiation-induced sarcoma. Chemotherapy, consisting of the four-drug combination CYVADIC (cyclophosphamide, vincristine, adriamycin, DTIC) was employed in six of the seven patients. Only two of them achieved partial remission, lasting only 2 and 3 months, respectively. The effectiveness of adriamycin-containing chemotherapy regimens in soft tissue sarcomas as well as the remote hazard of radiation-related sarcoma in primary or postoperative breast irradiation are discussed. PMID- 3838355 TI - [Temporal and spectral characteristics of signals from artefacts and background bioelectric activity. Spectral characteristics of signals from artefacts of extracerebral origin]. AB - The spectral characteristics of the artefacts of the extrabrain origin and background bioelectrical activity have been investigated over the number of frequency ranges. PMID- 3838356 TI - Calculation of patient dose and somatic dose index due to roentgen examinations. AB - In order to estimate the risk involved in x-ray examination for an individual or for a population, doses resulting from x-ray examinations are needed for organs particularly sensitive to radiation, i.e., the thyroid gland, the lungs, the breasts, and the bone marrow. A dose calculation program is presented based on a semiempirical formula involving exposure, backscatter factor, relative depth dose, and off-axis attenuation. Results have been compared with experimental measurements and Monte Carlo calculations presented in the literature. Doses to any point, organ doses, energy imparted, and somatic dose index can be calculated in phantoms of different sizes. The agreement between these and Monte Carlo results is probably sufficient for radiation protection risk estimates. PMID- 3838357 TI - Variations on calculating left-ventricular volume with the radionuclide count based method. AB - Various methods for the calculation of left-ventricular volume by the count-based method utilizing red-blood-cell labeling with 99mTc and a parallel-hole collimator are evaluated. Attenuation correction, linked to an additional left posterior oblique view, is utilized for all 26 patients. We examine (1) two methods of calculating depth, (2) the use of a pair of attenuation coefficients, (3) the optimization of attenuation coefficients, and (4) the employment of an automated program for expansion of the region of interest. The standard error of the estimate (SEE) from the correlation of the radionuclide volumes with the contrast-angiography volumes, and the root-mean-square difference between the two volume sets at the minimum SEE are computed. It is found that optimizing a single linear attenuation coefficient assumed for attenuation correction best reduces the value of the SEE. The average of the optimum value from the end-diastolic data and that from the end-systolic data is 0.11 cm-1. This value agrees with the mean minus one standard deviation value determined independently from computed tomography scans (0.13-0.02 cm-1). It is also found that expansion of the region of interest beyond the second-derivative edge with an automated program, in order to correctly include more counts, does not lower the SEE as hoped. This result is in contrast to the results of others with different data and a manual method. Possible causes for the difference are given. PMID- 3838358 TI - 1,25-Dihydroxycalciferol and calcium therapy in osteoporosis with calcium malabsorption. Dose response relationship of calcium absorption and indices of bone turnover. AB - We have studied some effects of small doses of 1,25-dihydroxycalciferol (calcitriol) and calcium, either combined or separately, in 45 patients with osteoporosis and malabsorption of calcium. In 24 patients on 0.25 micrograms/d of calcitriol the hourly fractional rate of radiocalcium absorption rose from 0.37 +/- 0.02 to 0.55 +/- 0.04 (p less than 0.001) and in 21 patients on 0.50 micrograms/d it rose from 0.36 +/- 0.02 to 0.69 +/- 0.05 (p less than 0.001). These responses were seen within 5 days and were not increased further at 6 weeks to 3 months. The combined therapy significantly reduced the fasting urinary hydroxyproline/creatine ratio (OHPr/Cr) and plasma alkaline phosphatase activity (ALP) in 6-12 weeks, the smaller dose of calcitriol (0.25 micrograms/d) being as effective as the larger one (0.50 micrograms/d) in this respect. Calcium alone (1 g/d) had no effect and calcitriol alone (0.25 mcg/d) had a lesser effect on both OHPr/Cr and ALP than the combined therapy. The falls in OHPr/Cr and ALP tended to be greatest in the cases with the highest initial levels but constituted only partial suppression of these variables towards the theoretical non-bone components. These results suggest that treatment with calcitriol and calcium suppresses bone resorption in osteoporosis associated with malabsorption of calcium and is more effective than calcium or calcitriol given alone. PMID- 3838359 TI - Effects of 1,25-dihydroxyvitamin D3 on membrane transport and intermediary metabolism. AB - To investigate the mechanism of the renal tubular transport effects of 1,25 dihydroxyvitamin D3 (1,25-D3), brush border membrane vesicle inorganic phosphate (Pi) uptake and gluconeogenesis were measured in renal cortex obtained from vitamin D deficient thyroparathyroidectomized rats which had been infused with 6 pmol/h of 1,25-D3 and 0.2 U/h of parathyroid hormone (PTH), a nonphosphaturic ('permissive') dose, for 6 h. When compared to vitamin D deficient animals receiving the vehicles alone, there was a significant increase in Pi transport by those vesicles obtained from the 1,25-D3-treated animals. Substrate-stimulated gluconeogenesis in thyroparathyroidectomized vitamin D deficient animals was decreased in animals which received the 1,25-D3 plus PTH combination. In all groups receiving 1,25-D3 plus PTH, there was a significant decline in urinary Pi excretion. We, therefore, conclude that 1,25-D3 promotes proximal tubular Pi reabsorption through an effect that occurs at the brush border membrane. Furthermore, the administration of 1,25-D3 causes a reduction in renal cortical gluconeogenesis. The administration of a permissive dose of PTH is necessary for these effects to occur. PMID- 3838360 TI - Coordinate regulation of mouse metallothionein I and II genes by heavy metals and glucocorticoids. AB - Regulation of the endogenous mouse metallothionein I and II (MT-I and MT-II) genes by heavy metals and glucocorticoids was studied in cultured mouse cells. Both mRNAs were measured simultaneously by solution hybridization with [3H]MT-I cDNA and [32P]MT-II cDNA, and the absolute amount of each mRNA was calculated by using a single-stranded M13 standard that contained both mRNA sequences. Both genes responded identically to different concentrations of metals (zinc, cadmium, and copper) and dexamethasone. Furthermore, the time courses of induction of both mRNAs were the same. However, under all conditions there was 1.2- to 1.9-fold more MT-I mRNA than MT-II mRNA. We conclude that both genes are regulated identically by receptors for glucocorticoids and metals but that the rate of transcription from the MT-I gene is slightly higher than from the MT-II gene. PMID- 3838361 TI - Charge transfer between fluorescein and tryptophan as a possible interaction in the binding of fluorescein to anti-fluorescein antibody. AB - Steady-state and time-resolved fluorescence studies of fluorescein (Fl) and 9 hydroxyphenylfluoron (HPF) bound to high-affinity rabbit anti-Fl IgG antibody (anti-Fl IgG) have been performed. The heterogeneity in the fluorescence properties observed for Fl bound to anti-Fl IgG is reduced for HPF bound to anti Fl IgG. A charge transfer between a tryptophyl residue in the binding site and the hapten was considered as a possible binding interaction. Fl was observed to form complexes in solution with the amino acids tryptophan, tyrosine and methionine, probably due to charge transfer. Also, the fluorescence of tryptophyl residues of the protein is quenched on binding. While such charge transfer complexes may be present, there is no direct evidence that charge transfer complexes between Fl and tryptophan are necessarily present for Fl bound to all high-affinity anti-Fl IgG molecules. PMID- 3838362 TI - Enhanced reactivation of UV-irradiated adenovirus 2 in HeLa cells treated with non-mutagenic chemical agents. AB - Treatment of HeLa cells with ethanol and sodium arsenite, compounds which are known to elicit the heat-shock response, before infection with UV-irradiated adenovirus 2 has been found to result in the enhanced reactivation of the damaged virus in a manner similar to that obtained by pre-irradiation or heating of the cells. Enhanced reactivation may be the result of the inhibition of DNA synthesis caused by these agents since hydroxyurea also produced a significant enhancement. PMID- 3838363 TI - Cancer risks in patients with chronic lymphocytic thyroiditis. AB - The incidence of malignant tumors and leukemia was analyzed in 829 patients with chronic lymphocytic thyroiditis and in 829 individually age-matched and sex matched patients with colloid goiter. Diagnoses were based on cytologic studies of specimens obtained by fine-needle aspiration biopsy. The patients were examined between 1959 and 1978 and were followed in the Swedish Cancer Register between 1959 and 1981. There was no increased risk for the total number of tumors in the thyroiditis group (53 observed vs. 52.7 expected) or in the colloid-goiter group (40 vs. 53.2, respectively; P not significant). There were six lung cancers in the thyroiditis group (2.9 expected, P not significant), and one in the group with colloid goiter. Patients with thyroiditis had an increased risk of myeloproliferative and lymphoproliferative neoplasms (12 observed vs. 3.0 expected, P less than 0.001). The risk of malignant thyroid lymphoma was greatly increased, with an estimated relative risk of 67 (4 observed vs. 0.06 expected, P less than 0.000001). There was no increased risk for any type of tumor among patients with colloid goiter. PMID- 3838364 TI - Clinical computing in a teaching hospital. AB - This report describes a hospital-wide clinical computing system that permits physicians, nurses, medical students, and other health workers to retrieve data from the clinical laboratories; to look up reports from the departments of radiology and pathology; to look up demographic data and outpatient visits; to look up prescriptions filled in the outpatient pharmacy; to perform bibliographic retrieval of the MEDLINE data base; to read, write, retract, edit, and forward electronic mail; and to request delivery of a patient's chart. During a one-week study period, from 300 video display terminals located throughout the hospital, 818 patient care providers used a common registry of 539,000 patients to look up clinical and laboratory data 16,768 times; 477 other hospital workers used the patient registry 46,579 times. In a separate study of 586 health care providers, 470 (80 per cent) indicated that they used computer terminals "most of the time" to look up laboratory results; in contrast, 48 (8 per cent) preferred printed reports. Of 545 hospital workers, 440 (81 per cent) indicated that the computer terminals definitely or probably made their work more accurate, and 452 (83 per cent) indicated that terminals enabled them to work faster. The large amount of use by clinicians and their judgment that the computer has been so helpful to them suggests that a reliable, comprehensive, and easy-to-use computer system can contribute substantially to the quality of patient care. PMID- 3838365 TI - Elevated plasma 1,25-dihydroxyvitamin D concentrations in infants with hypercalcemia and an elfin facies. AB - We measured plasma concentrations of 1,25-dihydroxyvitamin D (1,25-(OH)2D) in the course of a 6-to-37-month survey of four children with hypercalcemia and an elfin facies (Williams syndrome). Levels of 1,25-(OH)2D were elevated (160 to 470 pg per milliliter) during the hypercalcemic phase of the disease, when the children were five to nine months old, and they decreased thereafter. Plasma 1,25 (OH)2D levels were higher than those found in three children (16 to 60 months old) with the elfin facies syndrome and no hypercalcemia (42 to 71 pg per milliliter) and eight children (1 to 36 months old) with hypercalcemia and no dysmorphy (12 to 140 pg per milliliter), including two children with vitamin D intoxication. Hypercalcemia in the three children with elfin facies was controlled by a low calcium diet. Serum calcium levels fell to the normal range, and plasma 1,25 (OH)2D levels were normal for age (18 to 105 pg per milliliter) at 14 to 47 months of age, even after appropriate therapy had been discontinued. These observations suggest that hypercalcemia may be the consequence of abnormal synthesis or degradation of 1,25-(OH)2D in children with the elfin facies syndrome. PMID- 3838367 TI - [Statistics and the microcomputer]. PMID- 3838366 TI - Isolation and characterization of genomic and cDNA clones of human erythropoietin. AB - The glycoprotein hormone erythropoietin regulates the level of oxygen in the blood by modulating the number of circulating erythrocytes, and is produced in the kidney or liver of adult and the liver of fetal or neonatal mammals. Neither the precise cell types that produce erythropoietin nor the mechanisms by which the same or different cells measure the circulating oxygen concentration and consequently regulate erythropoietin production are known. Cells responsive to erythropoietin have been identified in the adult bone marrow, fetal liver or adult spleen. In cultures of erythropoietic progenitors, erythropoietin stimulates proliferation and differentiation to more mature red blood cells. Detailed molecular studies have been hampered, however, by the impurity and heterogeneity of target cell populations and the difficulty of obtaining significant quantities of the purified hormone. Highly purified erythropoietin may be useful in the treatment of various forms of anaemia, particularly in chronic renal failure. Here we describe the cloning of the human erythropoietin gene and the expression of an erythropoietin cDNA clone in a transient mammalian expression system to yield a secreted product with biological activity. PMID- 3838368 TI - Parathyroid hormone and 1,25-dihydroxyvitamin D3 affect the tissue concentrations of zinc in uremic rats. AB - The tissue concentration of zinc was studied in normal and uremic rats. Differences between the groups only reached significance when either parathyroid hormone or 1,25-dihydroxyvitamin D3 were administered. Uremic rats having obtained these compounds showed a significantly higher concentration of zinc in their liver, whereas their serum content of zinc was decreased. PMID- 3838369 TI - Control of spasticity by implantable continuous flow morphine pump. AB - Continuous flow pumps are being used for the delivery of morphine sulfate to the intrathecal and epidural space for control of pain. We have encountered several patients who had a combination of pain and spasticity or who had spasticity so intense that it was the source of pain. One to two milligrams of intrathecal morphine dramatically relieved their spasticity and pain. Three such patients have subsequently undergone pump implantation with prolonged control of their spasticity. This has initiated a formal clinical investigation directed at determining the physiological mechanism of this phenomenon, as well as its long term efficacy. PMID- 3838370 TI - Bilateral mycotic aneurysms of the intracavernous carotid artery. AB - A rare case of bilateral intracavernous internal carotid artery aneurysms is presented. The clinical and laboratory data strongly suggested the mycotic nature of the aneurysms. Internal carotid artery ligation was performed because of clinical evidence of progressive enlargement of the right-sided aneurysm. The left-sided aneurysm was managed medically. It remained asymptomatic and, 14 months later, a control angiogram showed no significant change in its size and configuration. PMID- 3838371 TI - The toxicity of non-ionic water-soluble contrast media in selective vertebral angiography. An experimental study in rabbits with special reference to the difference between monomeric and dimeric compounds. AB - Selective vertebral angiography was performed in 28 rabbits in order to compare the adverse effects of two monomeric (metrizamide, iohexol) and two dimeric (iodecol, 2-5410-3) non-ionic water-soluble contrast media. The dose was 2,5 ml and the iodine concentrations 300 mg per ml. Marked, but transitory changes were seen in the electrocardiographic and blood pressure recordings with all the contrast media and with no difference between them in this respect. The two monomers had a higher tendency than the dimers to cause spasm in the intracranial arteries. No serious complications were seen in the series. PMID- 3838372 TI - [The role of cytology by needle aspiration in the diagnosis of thyroid nodules. Examination of 179 cases]. AB - Since May 1981, fine needle biopsies have been used for cytological examination of thyroid nodules that were barely or not recorded by scintiphotography. By February 1984, a total of 179 patients had been examined. The biopsies were repeated on 12 patients where the first sample produced no diagnostic material. In 57 cases, a histological control existed in the form of material removed surgically by enucleoresections, partial and total thyroidectomies. Histological examination confirmed the cytological diagnosis in 7 out of 8 cases (88%) of malignant neoplasias with varying degrees of differentiation. A cytological diagnosis of adenoma was reached in 80% of cases, and of nodular struma in 82% of cases. Microscopic aspects of the cases are described together with the consequent cytological diagnostic criteria, while the characteristics and importance of the technique are also discussed. PMID- 3838373 TI - Influence of gestational age on prediction of fetal lung maturity by fluorescence polarization of amniotic fluid. AB - Compared are the amniotic fluid fluorescence polarization values and the neonatal outcomes of 201 pregnant women who delivered from 28 through 37 weeks of gestation within 48 hours of the fluorescence polarization determinations. Thirty five neonates developed hyaline membrane disease. The corresponding fluorescence polarization values ranged from 0.275 to 0.391. Eight of those 35 tests results were less than 0.325. The predictiveness of the method was studied using different threshold fluorescence polarization values. At the authors' own threshold of less than or equal to 0.325, the overall predictive value was as follows: false mature predictions: 6.2%, false immature predictions: 62.5%, sensitivity: 77.1%, and specificity: 72.8%. However, the false mature prediction rate was 21 to 40% from week 28 through week 33 versus 3.4 to 5.8% from week 34 through week 37, depending on the selected cutoff fluorescence polarization value. The sensitivity and specificity before, at, or after week 34 were significantly different at all tested fluorescence polarization values (P less than .05 to P less than .01) with the exception of the sensitivity at 0.310 and at 0.316 (P = .057). Caution is advised against relying on the fluorescence polarization method to predict fetal lung maturity at least before 34 weeks of gestation. PMID- 3838374 TI - Management of recurrent vulvovaginal candidiasis with intermittent ketoconazole prophylaxis. AB - In an open prospective study, 40 women with severe recurrent vulvovaginal candidiasis were treated with ketoconazole 400 mg daily for two weeks, followed by prophylactic ketoconazole 400 mg daily for five days with onset of menses for three menstrual cycles. Initially, 100% of the women responded clinically, however, 24.3% developed recurrence of symptomatic candidal vaginitis during the period of cyclical prophylaxis. By the end of six months observation, 56.8% of the patients' symptoms had recurred; however, symptomatic recurrence during the next six months was uncommon. The clinical attack rate of symptomatic episodes was significantly reduced during the one-year observation. One patient developed reversible mild hepatitis on therapy. No evidence emerged that topical genital therapy of male partners was beneficial in reducing vaginal candida recolonization. Maintenance prophylactic therapy with oral ketoconazole appears effective in preventing recurrent episodes of vulvovaginal candidiasis. PMID- 3838375 TI - [Quantitative changes in histones during the formation of structures characteristic of the male pronucleus in mammalian spermatozoa in vitro]. AB - Treatment of bull spermatozoa with DDC--Na/dithiothreitol results in the swelling and decondensation of nuclear chromatin. The structures formed at the final stages of decondensation are morphologically similar to the male pronucleus. Cytophotometric analysis has shown that decondensation of chromatin in the gametes in followed by quantitative changes of basic nuclear proteins. In partly- decondensed sperm nuclei the intensity of histone staining increases as a result of the appearance of extra reactive groups. In fully decondensed nuclei there remain only 54% of histones of the original haploid level. Nucleoproteins revealed in the sperm with fully dispersed chromatin must be histones of the somatic type. PMID- 3838376 TI - Neodymium: YAG laser posterior capsulotomy: the first 100 cases at UCLA. AB - Initial anatomic success was reported in 97 of the first 100 neodymium: YAG laser posterior capsulotomies performed at the Jules Stein Eye Institute. Visual acuity improved in 90 patients, was unchanged in five, and decreased in five. In the five patients with decreased visual acuity after posterior capsulotomy, the decrease was unrelated to capsulotomy and caused by progression of preexisting retinal disease. Our experience suggests that attention to patient evaluation and surgical technique can help minimize complications and assure best results. PMID- 3838377 TI - Current trends in orbital decompression. AB - A questionnaire was sent to members of the American Society of Ophthalmic Plastic and Reconstructive Surgery (ASOPRS) and the Orbital Society in regard to indications, surgical techniques and results of orbital decompression for Graves' disease. It was found that more than 60% of orbital decompressions were performed for mild to severe exophthalmos to correct corneal exposure or disfigurement. A total of 3.9% of these procedures were performed to relieve visual loss in compressive neuropathy. The large majority of decompressions were performed using antral-ethmoidal decompression via a translid or fornix approach. The amount of retrodisplacement was greatest with Kennerdell-Maroon or four-wall decompression and the least with lateral wall decompression. The antral-ethmoidal and three wall decompression techniques gave an average of 4 to 6 mm of retrodisplacement. It was determined from the survey that antral-ethmoidal decompressions performed through the transantral approach were more likely to relieve the pressure in compressive neuropathy and also more likely to induce a worsening of muscle balance. In contrast, antral-ethmoidal decompressions performed via the translid approach were not as effective in relieving compressive neuropathy but had a much lower incidence of worsened muscle balance, and in fact, resulted in a higher incidence of improved muscle balance. The same trends were confirmed in the author's surgical practice, and an anatomic explanation is offered. The importance of creating nasoantral windows following decompression is emphasized. The risks of cerebrospinal fluid leakage and changes in eyelid positioning following decompression are described. PMID- 3838378 TI - A BASIC computer program for analysis of the Farnsworth 100-hue test. AB - A computer program in BASIC has been written which will compute all scores for the Farnsworth 100-hue test, and plot them in the appropriate colour on a polar co-ordinate graph. Hard copy can be obtained on a dot-matrix printer. The program is simple to use, and considerably curtails the analysis time for this test, as well as eliminating possible computational errors. PMID- 3838379 TI - Lactose intolerance and diarrhea: are they related? PMID- 3838380 TI - 1,25-Dihydroxyvitamin D3 decreases alkaline phosphatase activity in cultures of embryonic chick tibiae. AB - The influence of 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] on the alkaline phosphatase (AlPase) activity in cultures of chick embryo tibiae was determined. A dose-related, decreased release (30-47%) of AlPase from the bones was seen with the metabolite at 0.05-0.5 ng/ml of medium with a similar effect on the bone content of enzyme. The highest dose (1 ng/ml) decreased the bone content by 38% without further effect on AlPase release. Combining a low level of 1,25(OH)2D3 (0.05 ng/ml) with parathyroid hormone (PTH, 1 U/ml) reduced release of enzyme additively, but caused no greater decrease in bone content of activity than PTH alone. No effects of 24,25-dihydroxyvitamin D3 [24,25(OH)2D3, 0.5 ng/ml] on release or bone content of AlPase were found when this metabolite was added alone or in combination with PTH; however, 24,25(OH)2D3 did prevent the inhibition of release of AlPase when added with 1,25(OH)2D3. After a 1-day exposure to 1,25(OH)2D3, continued incubation in metabolite-free medium resulted in an 89% increase in bone content of AlPase. The results suggest that 1,25(OH)2D3, as well as PTH, may have regulatory roles in bone growth through their effects on AlPase. PMID- 3838381 TI - Fluprazine hydrochloride decreases copulation in male rats. AB - The copulatory performance of 18 sexually experienced male rats was tested 30 min after IP injection of the phenylpiperazine, Fluprazine Hydrochloride (4 and 8 mg/kg), or saline solution. Three 20-min tests with an estrous female were conducted at weekly intervals. Each drug dose produced a significant depressive effect on copulatory behavior (latency to and frequency of intromissions and ejaculations) without affecting social investigation. The increased latencies to mounting and intromission observed at both doses suggest that the primary action of the Fluprazine Hydrochloride is to interfere with the transition from social to copulatory patterns. Although the drug's mode of action is currently unknown, the present findings suggest that it operates on some common mediator of sexual and aggressive behavior. PMID- 3838382 TI - On-line minicomputerized measurement of cardiopulmonary function on a breath-by breath basis. PMID- 3838383 TI - Responses of mouse lung to irradiation. 1. Alterations in alveolar surfactant after neutrons and X-rays. AB - Surfactant levels in the alveolus after X-irradiation are shown to be increased over a period of about 6-8 weeks. Although the increase in phospholipid in alveolar lavage commences shortly after irradiation, peak levels occur about 3 weeks post-irradiation. The time course of the response was independent of radiation dose and quality but its magnitude was dose related with X-rays and neutrons being comparable in effectiveness (i.e. RBE approximately 1). Amounts of alveolar surfactant subsequently return to about control level and, during the period of radiation pneumonitis some 3-5 months post-irradiation, there is no indication of a further response by the surfactant system. Analysis of the amount of disaturated lipids in both lung tissue and alveolar lavage fluid suggests that increased surfactant levels are at least partly due to reduced turnover. Post radiation changes in alveolar lavage phospholipid composition were not detected. PMID- 3838384 TI - [Morphine metabolism in critical patients with need-directed peridural morphine infusion for the management of postoperative pain]. AB - For constant analgesia after abdominal surgery, 34 patients (Group I) and 14 patients under intensive care (Group II) received epidural morphine infusions at mean hourly rates of 0.23 +/- 0.04 mg morphine in the first hour to 0.01 +/- 0.0 mg in the 50th hour, and 1.55 +/- 0.26 mg in the first hour to 0.20 +/- 0.08 mg in the 50th hour, respectively, after an initial bolus injection of 2 mg morphine. Whereas in Group I metabolized morphine immunoreactivity reached a plateau within 20 minutes which lasted until 8 p.m. on the operation day, in Group II a far higher plateau (p less than 0.001) was attained,--but only after some hours--which lasted until 8 p.m. on the first postoperative day. In the course of the treatment, concentrations of metabolized morphine immunoreactivity in serum and in urine decreased in both groups. PMID- 3838385 TI - Human dioxin-inducible cytochrome P1-450: complementary DNA and amino acid sequence. AB - Induction of cytochrome P1-450 has been linked to susceptibility to certain chemically induced cancers in mouse and man. Treatment of the human cell line MCF 7 with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) results in high levels of aryl hydrocarbon (benzo[a]pyrene) hydroxylase (P1-450) activity. This cell line was used to isolate a human P1-450 full-length complementary DNA (cDNA) clone. The cDNA is 2566 nucleotides in length, encodes a polyadenylated messenger RNA (2.8 kilobases in length), and has a continuous reading frame producing a protein with 512 residues (molecular weight, 58,151). The human P1-450 cDNA and protein are 63 percent and 80 percent similar to mouse P1-450 cDNA and protein, respectively. Whereas the mouse TCDD-inducible P-450 gene subfamily has two members (P1-450 and P3-450), the human TCDD-inducible gene subfamily appears to have only one gene (P1-450). PMID- 3838386 TI - Treatment of mycotic aneurysms. AB - Mycotic intracranial aneurysms may be treated by antibiotic therapy alone. Careful evaluation of this mode of treatment has been hampered by inadequate angiographic and microbiological documentation. The present case details the successful conservative management of one of these lesions in a patient who had previously undergone craniotomy for a separate mycotic aneurysm. PMID- 3838388 TI - [Development of a clinical tumor registry using the DATACORD program package]. AB - During the establishment of a new radiooncologic department in a general hospital, a clinical tumor register has been developed for internal patient documentation. The authors describe the general requirements which had to be fulfilled by this tumor register as well as the reasons leading to the purchase of a commercial program package adapted to an irradiation planning system. The structure of the programs and the specification of characteristics are defined. Finally some aspects of organisation regarding the use of the register are mentioned. PMID- 3838387 TI - Cardiotoxicity study of amsacrine in rats. AB - The cardiac functional and tissue changes produced by the antineoplastic agent, amsacrine, were evaluated in CD male rats. Amsacrine was administered intraperitoneally to groups of 12 male rats in single weekly doses of 12, 6, and 3 mg/m2 for 13 weeks. The drug elicited target organ toxicity in the bone marrow, lymphoid tissue, and gonads. There were blood biochemical alterations with transient elevations of total serum creatine phosphokinase, creatine phosphokinase-MB fraction, aspartate aminotransferase, and lactate dehydrogenase levels at 12 mg/m2, suggesting myocardial damage; however, there was no associated pathologic evidence of cardiotoxicity. This study indicates that amsacrine has negligible cardiotoxicity in rats when administered weekly for 13 weeks even at the lethal dose levels. PMID- 3838389 TI - Transscleral laser cyclocoagulation. PMID- 3838390 TI - Laser iridotomy. PMID- 3838391 TI - New laser systems and their potential clinical usefulness. PMID- 3838392 TI - Ivermectin in fly strike. PMID- 3838393 TI - Persistence of dead Ostertagia ostertagi in the abomasal mucosa following anthelmintic treatment. AB - Anthelmintic trails, conducted with albendazole, fenbendazole and ivermectin for efficacy against gastrointestinal nematodes, principally inhibited early fourth larval stages of Ostertagia ostertagi in naturally infected cattle. Cattle wee slaughtered seven to 20 days after treatment. O ostertagi was the predominant abomasal nematode recovered with occasional small numbers of Haemonchus species and Trichostrongylus axei. Control calves uniformly had very large O ostertagi infections, primarily early fourth stage larvae. Viable surviving worms and variable numbers of dead and degenerate worms were recovered in abomasal contents and washings. These O ostertagi larvae and adults were characterised by adherent debris or proteinaceous material, degenerated cuticles and distortion of internal structures. This study demonstrated the necessity for proper timing of slaughter for anthelmintic trial evaluation to allow clearance of dead nematodes, specifically O ostertagi larvae which are sequestered in the abomasal glandular tissue. Nematode collection within seven to 12 days after treatment will include dead and degenerate larval nematodes. The peripheral coating of larvae was suggestive of the Splendore-Hoeppli effect which has been associated with immunological responsiveness. The antigenic stimulus for this material and the lymphocyte and eosinophil infiltration was suspected to be early fourth stage O ostertagi larvae within the mucosa but was not identified definitively. PMID- 3838394 TI - [Prognostic value of the initial remission during chemotherapy of patients with lymphosarcoma]. AB - A study of the results of the first course of chemotherapy of 443 previously untreated patients with lymphosarcoma pointed to the predictive value of the extent and duration of the first remission, particularly in cases of blastic forms of lymphosarcoma. It was found that no significant increase in survival time can be obtained unless remission is complete. No significant difference in survival time was observed in cases of partial remission or ineffective primary therapy. PMID- 3838396 TI - The cochlear implant: help for the profoundly deaf. PMID- 3838395 TI - [Automatic and semiautomatic contour finding of the left ventricle in the 2 dimensional echocardiogram. In vitro studies in formalin-fixed swine hearts]. AB - In order to test semiautomatic and automatic contour finding procedures in 2 dimensional echocardiograms we determined endocardial borders in 42 short-axis slices of post-mortem animal hearts after interactive image enhancement such as scaling, normalisation and linearisation of grey levels semiautomatically and automatically by a complex contour finding algorithm. The areas calculated on the basis of these semiautomatic and automatic procedures were compared with "true" anatomic areas derived from planimetry. The complex computer algorithm is based on the detection and analysis of grey level gradients. The algorithm first creates a raw contour which still contains intra- and extracavitary artefacts as well as interrupted endocardial strings. Using a statistical iterative classification procedure and a least-square polynomial approximation the endocardial strings were structured, completed and smoothed and the artefacts eliminated. We were able to determine endocardial contours by semiautomatic methods in 33 (79%) and by automatic procedures in 30 (73%) of the echocardiograms. The correlation between semiautomatic and "true" contours was r = 0.97; y = 1.01x-0.46; standard error of the estimate (SEE) 0.51 cm2, between automatic and "true" contours r = 0.98; y = 0.99x - 0.31; SEE 0.43 cm2; the correlation parameters between the anatomic "true" areas and the areas calculated on the basis of manually derived borders were r = 0.98; y = 0.97x - 0.05; SEE 0.45 cm2. From our studies we conclude that left ventricular endocardium in short axis slices of postmortem animal hearts could reliably and reproducibly be detected by semiautomatic as well as by automatic procedures using a contour finding algorithm. PMID- 3838397 TI - Proceedings of the International Symposium on Molsidomine. November 5, 1983, Brussels, Belgium. PMID- 3838398 TI - Effect of molsidomine on cardiac preload, coronary artery diameter, and coronary resistance. AB - The vascular and hemodynamic effects of a single intravenous bolus injection of molsidomine (100 micrograms/kg) were studied in six chronically instrumented, conscious dogs. At this dose only a minimal, short-term effect on peripheral resistance was observed. However, there was a pronounced dilation of peripheral veins and a simultaneous increase of effective vascular compliance of more than 60%. At the same time, central blood volume decreased significantly (17%). Because of preload reduction, left ventricular end-diastolic volume and pressure decreased significantly for more than 1 hour. A significant increase of large coronary artery diameter (up to 7% occurred simultaneously. Coronary resistance vessels were not affected. All effects reached a maximum between 15 and 30 minutes and were observed for at least 4 hours. We conclude that molsidomine exerts a long-lasting effect on the large coronary arteries and on the peripheral venous system. As a result of the combined effects on cardiac preload and on epicardial artery conductance, the myocardial oxygen supply and the supply/demand ratio will be improved. PMID- 3838399 TI - Pharmacokinetics of molsidomine in humans. AB - The pharmacokinetics of molsidomine were investigated in the plasma and urine of healthy male volunteers and patients with coronary heart disease after intravenous and/or oral administration of different galenic dosage forms of molsidomine. Following the rapid attainment of mean peak concentration (15 +/- 7 mg/ml) 0.5 to 1.0 hour after single oral dosing of 2 mg of molsidomine, the plasma levels of the unchanged drug decline monoexponentially with a mean half life of 1.6 +/- 0.8 hours. Molsidomine is absorbed almost completely. Its absolute bioavailability (44 +/- 15%) and a 14C-labeled triale give evidence of quick biotransformation of molsidomine to active metabolites. Less than 2% of the unchanged drug appear in the urine, but renal excretion is the main route of elimination of the metabolites in humans (90% to 95%). The kinetics parameters after administration of multiple dosages of 4 mg of molsidomine over 29 days do not account for accumulation of or enzyme induction by molsidomine. The finding of obvious good correlations between plasma levels of the predrug molsidomine and corresponding pharmacodynamic data can be made plausible by the time course of concentration values of the active metabolite SIN-1 in plasma. PMID- 3838400 TI - Relationship between pharmacokinetics and pharmacodynamics of molsidomine and its metabolites in humans. AB - The pharmacokinetic properties and hemodynamic effect of molsidomine and its pharmacologically active metabolite SIN-1 were investigated in 13 healthy volunteers following single oral doses. Hemodynamic changes were measured by finger plethysmography (peripheral arterial resistance), impedance plethysmography (venous distensibility), heart rate, and blood pressure. Plasma concentrations of molsidomine, SIN-1, and SIN-1C were measured by means of high pressure liquid chromatography. Oral administration of rapidly dissolving tablets of molsidomine (2 tablets of 4 mg), a sustained-release form of molsidomine (8 mg), and SIN-1 (4 mg) caused an increase of the a/b ratio of the finger plethysmogram and an increase of the venous distensibility. Heart rate and blood pressure remained unaffected. The time course of the peripheral arterial effect mimicked the time course of plasma concentrations of molsidomine and SIN-1. Similar to the results in animals, molsidomine was metabolized in humans to SIN-1 and subsequently degraded to the inactive metabolite SIN-1C. The kinetic profile of both metabolites could be followed in the plasma. The rate-limiting step in the metabolic sequence of molsidomine was found to be enzymatic hydrolysis and decarboxylation of molsidomine to SIN-1. Concentration-response curves of the a/b ratio of the finger plethysmogram showed that the plasma concentrations required to produce a definite effect are much higher for molsidomine than for SIN-1. This shows that the pharmacodynamically active form of molsidomine in humans is the metabolite SIN-1. The changes in the finger plethysmogram produced by SIN-1 suggest that in addition to the effect on the venous site, SIN-1 also dilates the peripheral arterial site. PMID- 3838401 TI - Hemodynamic effects of molsidomine, isosorbide dinitrate, and nifedipine at rest and during exercise. AB - In the first study the hemodynamic effects of standard doses of molsidomine (2 mg intravenously), isosorbide dinitrate (ISDN) (5 mg sublingually), and nifedipine (20 mg sublingually) were assessed at rest and under exercise conditions in a group of 30 patients with coronary heart disease. With the patients at rest both molsidomine and ISDN were associated with prompt reductions in left ventricular end-diastolic pressure and mean pulmonary artery pressure, whereas nifedipine was associated with slight reductions in left ventricular end-diastolic pressure and mean pulmonary artery pressure that did not attain statistical significance. Nifedipine and ISDN caused a decrease in mean aortic blood pressure, which resulted in a reactive increase in heart rate that was only significant with nifedipine. After administration of molsidomine, there was no significant change in mean aortic pressure at rest. There were reductions in stroke volume index and cardiac index after administration of molsidomine and ISDN. Nifedipine, however, was associated with significant increases in stroke volume index and cardiac index. None of the three test substances caused changes of contractility parameters. Under exercise conditions reductions in left ventricular end diastolic pressure, mean pulmonary pressure, and mean aortic pressure were documented following administration of molsidomine, ISDN, and nifedipine. There were no major changes in maximum heart rate or stroke volume index during exercise with any of the three drugs. However, nifedipine was associated with a significant increase in cardiac index, whereas molsidomine and ISDN produced no major changes.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838402 TI - Effects of molsidomine on regional contraction and global function of the left ventricle. AB - Fifteen consecutive patients (mean age 54 years) with proven coronary heart disease were studied with radionuclide ventriculography. After resting and exercise control studies, repeat studies were performed after administration of 4 mg of molsidomine sublingually and again after administration of 10 mg of metoprolol intravenously. Rest to exercise ejection fraction (EF) decreased significantly. This was significantly attenuated by molsidomine and by metoprolol. In a subset of nine patients with exercise ischemia, EF showed significant (p less than 0.05) improvement after molsidomine administration (46.7 +/- 13.7% to 57.1 +/- 16.7%), which was diminished to 54.4 +/- 10.5% after metoprolol administration. In the subgroup without exercise ischemia, molsidomine increased the EF to a lesser extent (47.3 +/- 12.7% to 52.6 +/- 13.4%, p less than 0.05). After administration of metoprolol the EF decreased below the control level (44.4 +/- 10.6%). Regional Fourier amplitudes accentuated the differences between the two groups. We conclude that molsidomine and metoprolol improve left ventricular function in patients with coronary heart disease and ischemia during exercise. In patients with reduced left ventricular function without signs of ischemia, molsidomine improves function as well and should be used additionally, if beta blockers are indicated for other reasons. PMID- 3838403 TI - Evaluation of the effects of molsidomine by cardiac equilibrium blood pool scintigraphy. AB - We have used equilibrium gated blood pool scintigraphy to evaluate the hemodynamic effects and duration of action of molsidomine, a new peripheral vasodilator antianginal drug, after sublingual administration (4 mg) in five patients with heart failure. The following parameters were studied at rest and 10, 60, and 240 minutes after drug administration: left and right ventricular ejection fractions, end-diastolic and end-systolic volumes, stroke volume, heart rate, and cardiac index. Systolic and diastolic blood pressures were determined by cuff measurement. Statistically significant (p less than 0.05) changes were observed after 10 minutes for left ventricular ejection fraction (+26.2%), left and right end-diastolic volume (-12.4% and -15.2%), left ventricular end-systolic volume (-15%), and cardiac index (+7.9%); after 60 minutes for left ventricular ejection fraction (+49%), left ventricular systolic volume (+30.5%), cardiac index (+29.7%), systolic blood pressure (-7.9%), and right ventricular end diastolic volume (-14.3%); and after 240 minutes for cardiac index (+23.9%), systolic blood pressure (-6.3%), and right ventricular ejection fraction (+23.1%). No changes in heart rate were observed. No patient experienced any side effect. We conclude that the hemodynamic improvement observed with molsidomine can be prolonged and results both from preload and afterload reduction. PMID- 3838405 TI - Effects of molsidomine on left ventricular dimensions and cardiac function in patients with chronic heart failure. AB - The effects of molsidomine were studied in seven patients with refractory congestive heart failure by means of two-dimensional echocardiography. Four milligrams of molsidomine or placebo was sublingually administered in a double blind crossover manner. End-diastolic dimension, end-systolic dimension, and mean velocity of circumferential fiber shortening were measured just below the mitral valve before drug or placebo administration and 1 hour later. No significant changes were observed with placebo. Heart rate and mean arterial pressure were not significantly modified with Molsidomine (80 to 83 bpm and 100 to 97 mm Hg, respectively). The reduction in end-diastolic dimension (67 to 61 mm; 9%; P less than 0.01) was slightly greater than the decline in end-systolic dimension (59 to 54 mm; 8%; p less than 0.01). The mean velocity of circumferential fiber shortening increased from 0.4 to 0.5 sec-1 but did not achieve statistical significance. Thus sublingual administration of molsidomine in patients with chronic heart failure reduces end-diastolic more than end-systolic dimension without effect on blood pressure, suggesting a predominant action on cardiac preload. PMID- 3838404 TI - Hemodynamic and coronary effects of molsidomine at basal state, during atrial pacing, and during cold pressor test in patients with stable angina pectoris. AB - Heart rate (HR), cardiac output (CO), coronary sinus blood flow (CSF), left ventricular systolic pressure (LVSP), left ventricular end-diastolic pressure (LVEDP), mean arterial (MAP), and coronary arteriovenous difference for oxygen (AVDcO2) were measured in patients with stable angina pectoris without cardiac failure before and 40 to 60 minutes after administration of 2 or 3 mg of molsidomine. In 20 patients these measurements were made in basal state during spontaneous rhythm. In eight of these patients (including three receiving beta blockers) the measurements were made during atrial pacing. In eight other patients, all receiving long-term beta-blocker therapy, the measurements were made during cold pressor test. At the basal state in spontaneous rhythm, a gradual reduction in the LVSP to 70% or less of its initial value was observed in four patients receiving 3 mg of molsidomine (two of whom received beta-blocker treatment). The LVSP was immediately restored by vascular filling. In the 16 other patients molsidomine decreased LVSP, LVEDP, MAP, CO, and double product (DP = LVSP X HR). The AVDcO2 was unchanged. CSF and myocardial oxygen uptake index (MVO2 = CSF X AVDcO2) were decreased. During atrial pacing, hemodynamic and coronary effects were similar to those seen in the basal state. During the cold pressor test, the increases in LVSP, MAP, and LVEDP were significantly reduced by molsidomine. The variations in CSF and coronary resistance (MAP/CSF) were also significantly different after administration of molsidomine, with better metabolic regulation of the coronary circulation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838406 TI - Active and passive changes in coronary diameter after vasodilation with SIN-1, the active metabolite of molsidomine. AB - The vasodilating effects of intracoronary injections of 0.4 mg of SIN-1, the active metabolite of molsidomine, on epicardial coronary arteries and coronary stenoses were evaluated in 14 patients with coronary artery disease in a double blind, randomized fashion vs placebo. Nine additional patients with well defined coronary stenoses received 0.4 mg of SIN-1 as well. Diameter changes of nonstenotic coronary arteries in proximal, medial, and distal coronary segments as well as changes of the residual luminal diameters within coronary stenoses were determined before (K), immediately after (M1), and 10 minutes after (M2) intracoronary administration of SIN-1. Aortic pressures and heart rate were monitored continuously. After administration of SIN-1, the diameters of nonstenotic coronary arteries increased in proximal segments by 9.4% (M1) and 11.7% (M2), in medial segments by 17.9% (M1) and 17.6% (M2), and in distal segments by 25.6% (M1) and 28.8% (M2). Within coronary stenoses the residual luminal diameters showed mean increases of 31.5% (M1) and 48.3% (M2). Placebo administration did not alter coronary diameters significantly. Aortic pressure and heart rate did not change after administration of SIN-1 or placebo. SIN-1 effectively dilates nonstenotic and stenotic coronary segments, as do nitrates and calcium channel blockers. By intracoronary injections, the direct effects on coronary vessels can be evaluated without interference with systemic effects. The increase in the residual luminal diameters within dynamic coronary stenoses after administration of SIN-1 is probably an important antianginal mechanism also for molsidomine. PMID- 3838407 TI - The new long-acting coronary artery dilator molsidomine and its metabolite SIN-1. AB - We studied the effects of intracoronary injections of SIN-1 (0.8 mg), the active metabolite of molsidomine, on coronary artery diameters and coronary stenoses. In nine patients with abnormal angiograms measurements were made 4 and 8 minutes after SIN-1 administration. There was a statistically significant increase in coronary luminal diameter in proximal, medial, and distal segments as well as at the level of the stenoses. At 4 minutes after administration distal segments showed a mean increase in diameter of 50%, compared to a mean increase of 26% in proximal segments. In six patients with normal angiograms SIN-1 abolished three of four coronary spasms induced by ergonovine maleate. A protective effect of SIN 1 against the vasoconstrictor effects of ergonovine was still present at 8 minutes after administration. Heart rate and blood pressure remained unchanged throughout the study. We conclude that the vasodilation induced by SIN-1 in normal and stenotic coronary arteries is probably an important contribution to the antianginal efficacy of molsidomine and suggests that molsidomine may be effective in the prophylaxis of variant angina. PMID- 3838408 TI - Prevention with molsidomine of coronary artery spasm caused by alkalosis. AB - A provocative test of coronary artery spasm caused by alkalosis was used to evaluate a possible anti-coronary artery spasm effect of molsidomine. The rapid infusion of an alkaline buffer followed by maximal voluntary hyperventilation in 10 patients with angina at rest led to the appearance of anginal pain and significant, transient ischemic changes of the ST segment resulting from alkalosis-induced coronary spasm. A second provocative test was performed under the same conditions, 24 hours later, after the administration of 4 mg of molsidomine. Molsidomine prevented the development of coronary artery spasm in 8 of the 10 patients in the study group. These preliminary results justify further clinical evaluation of molsidomine in the treatment of vasospastic angina. PMID- 3838409 TI - Molsidomine in the treatment of acute heart failure. AB - In this report we present the results of hemodynamic monitoring with a Swan-Ganz balloon catheter in 14 patients with heart failure associated with acute myocardial infarction, before and during 8 hours after a single oral dose of molsidomine (6 mg). Molsidomine induced the following changes: heart rate was reduced between 1.6% and 4.7% (significant at 4 hours, p less than 0.05); systolic blood pressure decreased 8.4% at 1 hour (p less than 0.05); pulmonary capillary pressure decreased approximately 30% (significant and lasting until 8 hours after administration, p less than 0.002); cardiac index did not change significantly, although individual analysis showed an increase in 6 of 12 cases; stroke volume index increased by 6% (significant at 1 hour, p less than 0.025); and left ventricular stroke work index increased from 9.8% to 24.5% (significant at 1 and 4 hours, p less than 0.01 and 0.025). These findings show the beneficial hemodynamic effects of molsidomine in patients with heart failure complicating acute myocardial infarction. PMID- 3838410 TI - Hemodynamic effects of molsidomine in patients with heart failure following acute myocardial infarction. AB - The short-term hemodynamic effects of molsidomine (4 mg sublingually) were evaluated in 13 patients with congestive heart failure following acute myocardial infarction. Right heart catheterization was performed by means of a Swan-Ganz thermodilution catheter. Hemodynamic measurements were made 30, 60, 120, and 180 minutes after the administration of the drug. Molsidomine significantly reduced systolic blood pressure from 121.5 +/- 3.3 (mean +/- SEM) to 111.1 +/- 2.9 mm Hg (p less than 0.001) after 60 minutes, mean right atrial pressure from 6.1 +/- 1 to 2.6 +/- 0.6 mm Hg (p less than 0.0001), mean pulmonary arterial pressure from 29.8 +/- 1.9 to 20.1 +/- 1.3 mm Hg (p less than 0.0001), and left ventricular filling pressure from 20.3 +/- 0.6 to 12.2 +/- 0.7 mm Hg (p less than 0.0001). No significant change occurred in heart rate, diastolic and mean blood pressure, cardiac index, stroke volume index, left ventricular stroke work index, systemic vascular resistance, and pulmonary vascular resistance. No side effects were seen after the administration of molsidomine. PMID- 3838411 TI - Solvent exposure from liquid sampling media. AB - Use of a personal sampling method using a toluene-based solution in a midget impinger led to the suspicion that it would result in toluene exposure to the worker. Field data from three workplaces indicate that in open environments, 8 hour TWA toluene exposures range from 3.6 - 20.1 mg/m3 with a mean of 8.9 mg/m3. However, sampling in semi-confined spaces resulted in 8-hour TWA concentrations up to 189 mg/m3, or 50% of the NIOSH-recommended exposure limit (375 mg/m3). Use of this and similar wet sampling methods in confined spaces requires investigators to be aware of the degree of ventilation in the space; and suggests the need to predict potential exposures before sampling. The vapor pressure method is a rapid, safe and simple way to predict this potential exposure. PMID- 3838412 TI - Reliability of amniotic fluid surfactant measurements. AB - A proficiency study designed to assess interlaboratory precision of amniotic fluid surfactant measurements is presented. A total of 31 laboratories participated in the study. The assays includes lecithin/sphingomyelin (L/S) ratio test, the measurement of phosphatidyl glycerol (PG), and the Lumadex-FSI test. L/S ratio values varied from "1.3" to over "5.0" on aliquots derived from the same pool. With only three exceptions, all PG values read as "positive." The interlaboratory agreement for the Lumadex-FSI assay was excellent. With the exception of two values of "46," all the other values were with "47" or "48." PMID- 3838413 TI - Feeding intolerance following ophthalmologic examination. AB - Reports of isolated cases of necrotizing enterocolitis following administration of mydriatric medication and ophthalmologic examination prompted a comparison of the incidence of feeding difficulties 24 hours before and 24 hours after the ophthalmologic examination of 50 newborns. All infants had received cyclopentolate hydrochloride and phenylephrine hydrochloride before the examination. A critical review of the nursing notes showed more abdominal distention and gastric aspirates in the period following the examination than in the period preceding the examination. One infant developed necrotizing enterocolitis during the 24-hour postexamination period. This study demonstrates the risk of feeding intolerance following the ophthalmologic examination of neonates. These risks may be due to the known side effects of the mydriatics, to the physical stress of the examination, or to a combination of both factors. PMID- 3838414 TI - Sucralfate: nonulcer uses. American College of Gastroenterology Committee on FDA Related Matters. AB - Recent studies have shown sucralfate to have cytoprotective features in addition to its known antipepsin and antacid effects. This drug has been shown in limited studies to prevent gastric salicylate injury with pretreatment. A role for sucralfate in the nonulcer population, patients with gastritis, esophagitis, stomatitis, while promising, has not been clearly established and needs to be defined with further studies. PMID- 3838415 TI - Creatinine clearance estimation from serum creatinine values: an analysis of three mathematical models of glomerular function. AB - The logarithmic relationship of serum creatinine and creatinine clearance was analyzed in 100 adult patient studies using a geometric regression technique. Each sex was independently analyzed, and the subsequently derived regression formulae were age corrected resulting in mathematical models useful in estimating creatinine clearance from serum creatinine concentrations. These formulae were tested prospectively in another group of 100 patient studies in which creatinine clearance had been determined, and the results compared to values derived by use of two other published formulae. This newer method resulted in a closer distribution of data around a line of identity compared to other formulae and allowed for a good "bedside" estimation of creatinine clearance from serum creatinine concentration. PMID- 3838416 TI - Computer-assisted concurrent antibiotic review in a community hospital. AB - A computer-assisted program that monitors the appropriateness of antibiotic prescribing by matching microbiology reports and patient drug profiles is described. An antibiotic review committee in conjunction with the quality assurance department developed the computer-assisted antibiotic review program. An antibiotic order sheet was incorporated into the physicians' order form. Automatic stop dates were assigned according to the reason the antibiotic was ordered, e.g., surgical prophylaxis or documented infection. Numerous reports are generated from the data gathered from the physicians' order form. A drug/microbiology report is used to match patients' antibiotic drug profiles with their microbiology culture and sensitivity results. This report identifies all patients who have been receiving antibiotics for 72 hours or longer with sensitivities on file and mismatched sensitivity results. All mismatches that are considered important are investigated. Any actions taken are reported to the antibiotic review committee for peer review. The computer-assisted program has helped this hospital screen large populations of inpatients receiving antibiotics. The concurrent review of the drug/microbiology report has made it possible to detect within 24 hours, patients who are receiving antibiotics inappropriately. A computer can be used to perform daily concurrent antibiotic use review as a by-product of order entry by both the pharmacy and laboratory. PMID- 3838417 TI - Estrogen stimulates formation of lamellar bodies and release of surfactant in the rat fetal lung. AB - Estrogen has been shown to enhance the beta-adrenergic-receptor sites in rabbit lung tissue. Because of the possible relationship beta-adrenergic receptor and surfactant maturation, we studied the electron microscopic changes in type II cells of lung tissue of control as well as estrogen-treated developing rat fetuses. The amniotic sacs of 31 gravid rats, at day 15 to 21 of a 22-day pregnancy, were injected with either estradiol phosphate or saline solution or were not injected. The contralateral horn pregnancies acted as controls. In the noninjected and saline solution-injected controls multilamellar bodies started to be visible on day 18 and increased in number as well as size on days 18 and 19. On day 20, the process of release of the phospholipids into the alveolar cavities became apparent. After 48 hours of exposure to estradiol, there was a marked enhancement of the development of lamellar bodies, which were visible on day 17. The increase was both in number and in complexity. In the estradiol-injected animals, the release of the contents of the lamellar bodies into the alveolar cavity started 1 to 2 days earlier than in the control animals. There is an indication that propranolol injection decreases both the formation and the release of the phospholipids. We conclude that estrogen stimulates both the formation and the release of surface-active phospholipids in rat fetal lung tissue. PMID- 3838418 TI - Avascular zone in the macula in cicatricial retinopathy of prematurity. AB - Avascular zones in the maculas of 49 eyes of 33 patients aged 5 to 15 years with cicatricial retinopathy of prematurity were examined by fluorescein angiography. Twenty-three eyes of 18 subjects under 15 years of age who had been born at full term served as controls. The mean diameter of the avascular zones in the patients was 0.22 +/- 0.09 disk diameter, which was smaller than the diameter of 0.32 +/- 0.05 disk diameter in the controls (P less than .001). The patient group was divided into those with avascular zones of 0.2 disk diameter or less, regarded as underdeveloped avascular zones, and those with zones of 0.21 disk diameter or more, considered well-developed avascular zones. In the first group, ocular manifestations in the active stage were statistically more severe than in the second group. Visual acuity was good in most patients in each group. PMID- 3838419 TI - Circadian rhythms of sleep and wakefulness in mice: analysis using long-term automated recording of sleep. AB - Circadian rhythms of wheel-running activity and polygraphically defined wakefulness, rapid-eye-movement (REM) sleep and non-REM (NREM) sleep were continuously observed in ten mice (Mus musculus) under both alternating light dark (LD 12:12) and continuous darkness (DD) conditions. Sleep-wake state was determined automatically using a computer-based method that allowed continuous recordings of from 60 to 280 days in duration. The sleep-wake state percentages (of the circadian cycle) thus obtained were in substantial agreement with other estimates for this or similar strains and showed no significant difference between LD 12:12 (wake 54.3%, NREM sleep 38.1%, REM sleep 7.6%) and DD (wake 53.1%, NREM sleep 39.9%, REM sleep 7.0%) conditions. All 10 mice exhibited clear circadian rhythms in each of the three states and wheel-running activity under both lighting conditions for the entire duration of observation. Probability functions, computed using stationary sections of data from all 10 mice, showed distinct waveforms for all three states and wheel running. These waveforms were remarkably similar under entrained and free-running conditions. This documentation of sustained circadian rhythmicity in sleep-wake state throughout observations of unprecedented length contradicts the currently common assertion that circadian control of sleep state is weaker than that of activity. PMID- 3838421 TI - Severe bronchospasm following the use of atracurium in children. PMID- 3838420 TI - Review of meniscal injury and associated sports. AB - Meniscal injuries produce disability in a large portion of the population, and sports injuries are a common cause. Nicholas emphasized the importance of epidemiologic studies in an effort to better define the risk of various sports. There are significant regional differences in sports-related meniscal injuries depending upon the popularity of specific sports. Although publications in the European literature document some of these variations, there is little epidemiologic documentation of the variation in specific areas of the United States. Meniscectomies performed in Syracuse, New York, from 1973 to 1982 were reviewed. Sports-related meniscal injuries were tabulated and compared against all other causes. Our results indicate that the incidence of meniscal injury resulting in meniscectomy is 61 per 100,000 population. The sex ratio was three males to one female. Medial versus lateral meniscus injury was 81 versus 19%. Football had a 75% predominance of medial meniscectomy; basketball, 75%; wrestling, 55%; skiing, 78%; and baseball, 90%. Our data indicate that there are differences in the ratio of medial versus lateral meniscal disruption associated with specific sports activities. Medial meniscal injuries were, nevertheless, consistently more common in all of our categories except wrestling, where the frequency of lateral meniscal tear is nearly equal to that of medial meniscal tear. Additionally, the right knee is at a greater risk of meniscal injury in basketball than in other sports or the general population, and female skiers are at equal or greater risk of meniscal injury compared to male skiers. PMID- 3838422 TI - Interlaboratory variability in trace element analysis. PMID- 3838423 TI - Atracurium in a child with myotonic dystrophy. PMID- 3838424 TI - Chronic thyroiditis and mitral valve prolapse. AB - Mitral valve prolapse is more prevalent in patients with autoimmune diffuse toxic goiter, suggesting a possible etiologic association. The prevalence of mitral valve prolapse was determined in 75 patients with chronic lymphocytic thyroiditis, another autoimmune thyroid disorder, and in 50 healthy control subjects. Mitral valve prolapse was found in 31 of 75 (41%) patients with chronic lymphocytic thyroiditis and in 4 of 50 (8%) controls (odds ratio, 8.10; 95% confidence interval, 2.64 to 24.83; p less than 0.0005). The age-race adjusted odds ratio was 9.26 (95% confidence interval, 2.83 to 30.26; p less than 0.0005). No correlation between the prevalence of mitral valve prolapse and the presence of hypothyroidism, serum antithyroid antibodies, or the duration of chronic lymphocytic thyroiditis was found. The prevalence of mitral valve prolapse is substantially increased in patients with the autoimmune thyroid disorders. PMID- 3838425 TI - Programming pre-exercise snacks to prevent post-exercise hypoglycemia in intensively treated insulin-dependent diabetics. AB - Five intensively treated, insulin-dependent diabetics exercised for 45 minutes after fasting while receiving basal insulin injections. Plasma glucose concentrations remained stable during exercise but then declined, resulting in clinical hypoglycemia 1 to 2 hours later. Efficacies of three pre-exercise snacks in preventing the hypoglycemia were compared in a randomized crossover design. Orange juice, whole milk, and skim milk, each containing 13 g of carbohydrate, all prevented postexercise hypoglycemia. However, the more rapidly absorbed snacks, orange juice and skim milk, caused a greater increase in plasma glucose concentrations and the area under the glucose curve during exercise. From the recognized glucose profiles that occur after consumption of different carbohydrates, snacks as well as exercise and insulin can now be programmed for intensively treated, insulin-dependent diabetics. Because plasma glucose levels remain stable during exercise done after fasting and only fall late after exercise, a "lente" carbohydrate snack, such as whole milk, is an appropriate pre exercise snack. PMID- 3838426 TI - Tolerance of Acinetobacter calcoaceticus RAG-1 to the cationic surfactant cetyltrimethylammonium bromide: role of the bioemulsifier emulsan. AB - Emulsan, the polyanionic heteropolysaccharide bioemulsifier produced by Acinetobacter calcoaceticus RAG-1, was found to enhance the tolerance of RAG-1 cells to the toxic effects of the cationic detergent cetyltrimethylammonium bromide (CTAB). Emulsan-mediated tolerance was obtained with the purified deproteinated apoemulsan; ca. 9 micrograms of apoemulsan neutralized 1 microgram of CTAB. Deesterified apoemulsan was only half as effective in protecting the cells from CTAB toxicity. Tolerance was also mediated by the cell-associated emulsan minicapsule. Mutants lacking this capsule were more sensitive to CTAB than the corresponding parent. The growth of mutants and parent cells in mixed culture experiments demonstrated that the cell-associated polymer mediates CTAB tolerance in the early stages of growth. Once sufficient cell-free polymer has been released into the aqueous medium (ca. 0.5 micrograms/ml), this extracellular emulsan also plays a role in CTAB tolerance. PMID- 3838427 TI - Gene structure and nucleotide sequence for rat cytochrome P-450c. AB - Two clones from rat genomic libraries that contain the entire gene for rat cytochrome P-450c have been isolated. lambda MC4, the first clone isolated from an EcoR1 library, contained a 14-kb insert. A single 5.5-kb EcoR1 fragment from lambda MC4, the EcoR1 A fragment, hybridized to a partial cDNA clone for the 3' end of the cytochrome P-450c mRNA. This fragment was sequenced using the dideoxynucleotide chain termination methodology with recombinant M13 bacteriophage templates. Comparison of this sequence with the complete cDNA sequence of cytochrome P-450MC [Yabusaki et al. (1984) Nucleic. Acids Res. 12, 2929-2938] revealed that the EcoR1 A fragment contained the entire cytochrome P 450c gene with the exception of a 90-bp leader sequence. The gene sequence is in perfect agreement with the cDNA sequence except for two bases in exon 2. A second genomic clone, lambda MC10, which was isolated from a HaeIII library, contains the missing leading sequence as well as 5' regulatory sequences. The entire gene is about 6.1 kb in length with seven exons separated by six introns, all of the intron/exon junctions being defined by GT/AG. Amino- and carboxy-terminal information are contained in exons 2 and 7, respectively. These exons contain the highly conserved DNA sequences that have been observed in other cytochrome P-450 species. Potential regulatory sequences have been located both 5' to the gene as well as within intron I. A comparison of the coding information for cytochrome P 450c with the sequence of murine cytochrome P3-450 and rat cytochrome P-450d revealed a 70% homology in both the DNA and amino acid sequence, suggesting a common ancestral gene. Genomic blot analyses of rat DNA indicated that the 3 methylcholanthrene-inducible family of cytochrome P-450 isozymes is more limited in number compared to the phenobarbital-inducible isozymes. Cross-hybridization studies with human DNA suggest a high degree of conservation between rat cytochrome P-450c and its human homolog although gross structural differences do exist between the two genes. PMID- 3838428 TI - Canestick lesion of vellus hair in Netherton's syndrome. PMID- 3838429 TI - Pretibial myxedema associated with chronic thyroiditis. PMID- 3838430 TI - The practitioner's role in detection of adverse drug reactions. PMID- 3838431 TI - Successful management of Graves' disease in a patient undergoing regular dialysis therapy. AB - Classic Graves' disease associated with thyroid-stimulating hormone receptor antibodies developed in a woman undergoing regular hemodialysis for uremia from chronic pyelonephritis. Her condition responded well to treatment initially with carbimazole and then an ablative dose of sodium iodide I 131 therapy. To our knowledge this is only the second documented case of hyperthyroidism in a patient with chronic renal failure, and it demonstrates that conventional forms of therapy are efficacious and safe. PMID- 3838432 TI - Bilateral carpal tunnel syndrome caused by Graves' disease. AB - We observed three patients in whom carpal tunnel syndrome (CTS) developed in association with hyperthyroidism (Graves' disease). The course of one of these patients was marked by resolution of symptoms and electrophysiologic measures of CTS that paralleled the remission of Graves' disease after treatment with radioactive iodine. No other treatment of CTS was required or given. There may be a causal relationship between Graves' disease and CTS. PMID- 3838433 TI - Silent (painless) thyroiditis. Evidence of a geographic variation in frequency. AB - Recent reports suggest that 14% to 23% of thyrotoxic patients have silent (painless) thyroiditis, a newly described syndrome characterized by transient thyrotoxicosis with a low radioactive iodine uptake. A three-year review at a Brooklyn (NY) hospital showed only one definite and three possible cases of silent thyroiditis among 86 thyrotoxic patients. At most, 4% to 5% of thyrotoxic patients had silent thyroiditis. We suggest a geographic variation in this syndrome. Most cases and the largest series are from Japan and the Great Lakes area of North America. The latter may be related to increased iodine intake over many years in a previously endemic area of hypoiodidism and goiter, although other local factors may also be involved. PMID- 3838434 TI - Leiomyoblastoma associated with intractable hypercalcemia and elevated 1,25 dihydroxycholecalciferol levels. Treatment by hepatic enzyme induction. AB - A 42-year-old woman, with a previously resected jejunal leiomyoblastoma, was first seen with liver metastases 31/2 years after the tumor resection. Intractable malignant hypercalcemia appeared eight months later, together with renal insufficiency. No osteolytic lesions were detected. Levels of parathyroid hormone, cyclic adenosine monophosphate, and 1,25-dihydroxycholecalciferol (1,25[OH]2D) were not useful in distinguishing between the hypercalcemia of malignancy and concurrent hyperparathyroidism. Despite renal insufficiency, hypercalcemia, and subtotal parathyroidectomy, the 1,25(OH)2D levels remained elevated, consistent with the speculation that a tumor product stimulated 1-alpha hydroxylation of 25-hydroxycholecalciferol. Phenytoin and phenobarbital (enzyme induction therapy), in combination with phosphorus and glucocorticoids, appeared to be useful in controlling the hypercalcemia. PMID- 3838435 TI - Minute foci of Kaposi's sarcoma in a patient with acquired immunodeficiency syndrome. PMID- 3838436 TI - Registry of angiofollicular lymph node hyperplasia. PMID- 3838437 TI - Acquired immunodeficiency syndrome. Distinctive features of bone marrow biopsies. AB - Bone marrow biopsies from 30 patients with acquired immunodeficiency syndrome (AIDS), diagnosed according to accepted clinical criteria, were studied in order to determine if characteristic histopathologic features were present. The biopsies were compared with 20 biopsy specimens submitted from patients with fever of unknown origin or with known neoplastic disease, including four biopsies from patients with a history of narcotics addiction being treated in the methadone clinic, and with biopsies from three homosexual men who did not have AIDS. Characteristic biopsy features were recognized in 31 (86%) of 36 biopsy specimens from AIDS patients. Nineteen of 36 patients (53%) showed a distinctive pattern of hypercellularity in which hematic cells (immature granulocytic cells, megakaryocytes, eosinophils, and large lymphocytes) separated, but did not efface, fat cells; these cells were designated as "AIDS-pattern." Twelve specimens showed a less complete (probable-AIDS) bone marrow change. Reticulin fibers were increased in 28 of 36 biopsies. PMID- 3838438 TI - Pathologic appraisal of the thymus gland in acquired immunodeficiency syndrome in children. A study of four cases and a review of the literature. AB - We studied the entire thymus gland by step-serial sections in four fatal cases of acquired immunodeficiency syndrome (AIDS) in children. The location, configuration, and blood vessels of the thymus gland were normal. The weight was reduced. There was severe depletion of both lymphocytes and Hassall's corpuscles. Because of the normal location, configuration, and blood vessels and the seemingly less severe lymphocytic depletion than is seen in congenital immunodeficiency syndromes and because of the clinical and epidemiologic features, we concluded that this syndrome in children represents AIDS. We postulated that the epithelial cells of the Hassall's corpuscles may be the primary site of thymic injury in AIDS. PMID- 3838439 TI - Sinus histiocytosis with massive lymphadenopathy. Report of a case associated with necrosis. AB - We describe a case of a 21-year-old man who had a generalized lymphadenopathy and arthritis. Inguinal and cervical lymph nodes showed changes typical of sinus histiocytosis with massive lymphadenopathy. Extensive coagulative necrosis of the intrasinusal histiocytes is described, a feature which, to our knowledge, is unreported previously. PMID- 3838440 TI - Massive thymic hyperplasia in an infant with Beckwith-Wiedemann syndrome. AB - We report the clinical and postmortem findings in a newborn with Beckwith Wiedemann syndrome and pulmonary hypoplasia. The infant was found to have a massively enlarged thymus gland that apparently caused pulmonary hypoplasia and respiratory insufficiency. Massive hyperplasia of the thymus gland should be considered in the differential diagnosis of respiratory distress in the Beckwith Wiedemann syndrome. PMID- 3838441 TI - A morphologic grading scheme for membranous and respiratory bronchioles. AB - We describe a system for grading pathologic changes in the small airways. This system consists of determining a score of 0 to 3 using a set of pictorial reference standards for any or all of the following variables: wall inflammation, fibrosis, muscle hypertrophy, pigment deposition, epithelial goblet and squamous metaplasia, and intralumenal macrophages. Grading of this type is much faster and easier than formal morphometric analysis. This system has produced a good correlation with pulmonary function test abnormalities, indicating obstruction in cigarette smokers and has also been used to detect lesions produced by other inhaled agents such as mineral dusts. PMID- 3838442 TI - Sudden death from pericardial tamponade. Unusual complication of nonbacterial thrombotic endocarditis. AB - A ruptured myocardial infarct secondary to total coronary occlusion by a fragment of nonbacterial thrombotic endocarditis produced sudden, unexpected death in a nearly asymptomatic 82-year-old man who harbored two malignant neoplasms. PMID- 3838443 TI - Pathology of the heart in drowning. AB - Although ventricular fibrillation is a frequent cause of death in nearly drowned animals, the heart itself has never been studied in this condition. Working with a rabbit model, we have simulated the "near drowning" state and found that the heart undergoes some pathologic changes, including myocyte hypercontraction and hypereosinophilia. These changes may well account for the variety of arrhythmic disturbances that have been observed. PMID- 3838444 TI - Supravalvular aortic stenosis. Clinical and pathologic observations in six patients. AB - Supravalvular aortic stenosis with a mean pressure gradient of 101 mm Hg was encountered in six patients aged 1 1/2 to 12 years. Three patients had Williams syndrome. In two other patients the stenosis was familial. The angiographic/anatomic subtype of deformity was hourglass in four patients, diffuse in one, and membranous in one. Four patients are alive following successful surgical repair; the other two died without surgery. Microscopically, disorganized medial elements with fibrotic intima sometimes containing lacunae were observed in five cases; the one other had valvelike tissue only. Ultrastructurally, thick irregular elastic fibers, abundant swirling collagen, hypertrophied smooth-muscle cells, and scant ground substance characterized the medial tissue defect. Although hemodynamics during intrauterine development may predispose to localization of the stenosis to the supra-aortic valvar region, the cause for the mural dysplasia remains uncertain. PMID- 3838445 TI - Focal cytomegaly of the adult adrenal cortex. A rare variant of black adenoma. AB - A pigmented adrenocortical nodule was found incidentally in an adrenal gland resected for endocrine manipulation of breast carcinoma. The sharply circumscribed, nonencapsulated nodule was composed of cells with diameters as large as 95 micron. The cells had ample eosinophilic cytoplasm and contained much lipofuscin pigment. Electron microscopy disclosed tubulovesicular mitochondria, lipofuscin pigment, cytoplasmic vacuolization, and lipid without degenerative changes or intranuclear inclusions. This unusual lesion of adult adrenal glands is best considered as a rare variant of adrenocortical black adenoma. PMID- 3838446 TI - Multinucleated stromal giant cells of the uterine cervix. AB - We have studied two cases in which numerous, multinucleated giant cells were present as an incidental finding within the superficial stroma of the cervix. The cells exhibited varying degrees of nuclear atypia and resembled some of the cells found within fibroepithelial polyps of the lower female genital tract. Although the pathogenesis of the lesion is unknown, we believe that the lesion is nonneoplastic and probably represents an exaggeration of the nuclear atypia occurring within the superficial stromal cells of the lower female genital tract. These cells may be mistaken for malignant cells on histologic examination. PMID- 3838447 TI - Asbestos bodies found in infant lungs. PMID- 3838448 TI - Subset of fibroblasts defined by monoclonal antibody. PMID- 3838449 TI - Giant cell pneumonia due to respiratory syncytial virus. PMID- 3838450 TI - Cushing's syndrome. PMID- 3838451 TI - Cushing's syndrome. Screening methods in hospitalized patients. AB - We studied 18 patients with Cushing's syndrome and 25 patients in which Cushing's syndrome was excluded on follow-up to evaluate screening tests for Cushing's syndrome in hospitalized patients. Plasma cortisol values (at 8 AM) were found least helpful yielding 29% false-positive and 60% false-negative values. Diurnal variation of cortisol was present in 30% of patients with Cushing's syndrome and absent in 18% of patients without Cushing's syndrome. When corrected for total urinary creatinine, 24-hour urinary 17-hydroxycorticosteroids were specific (all patients without Cushing's syndrome had normal values) but not very sensitive (two of 12 patients with Cushing's syndrome had normal values). Similarly, 24 hour 17-ketosteroids were of little help with 17% false-positive and 35% false negative values. Twenty-four-hour urinary free cortisol was both a sensitive and specific screening test for Cushing's syndrome (no false-positive and no false negative results). We conclude that urinary free cortisol is the most efficient screening method for Cushing's syndrome in hospitalized patients. PMID- 3838452 TI - Lymphoid hypophysitis in a patient with lymphoid thyroiditis, lymphoid adrenalitis, and idiopathic retroperitoneal fibrosis. AB - We describe the autopsy findings in a 24-year-old woman with a clinical picture of pituitary and adrenal insufficiency which had its onset shortly after a normal pregnancy and delivery of a normal infant, two years before the mother's death. There were heavy lymphocytic infiltrations of the adenohypophysis, thyroid, and adrenals as well as diffuse retroperitoneal fibrosis with numerous perivascular lymphocytic infiltrates. It is concluded that lymphoid hypophysitis probably represents the hypophyseal counterpart of other endocrine autoimmune disorders and that immune mechanisms may also play a role in the pathogenesis of the so called idiopathic retroperitoneal fibrosis. PMID- 3838453 TI - Nerve axons in carotid body hyperplasia. A quantitative study. AB - The nerve density, expressed as total length of nerve fibers per square millimeter of tissue section, was measured in both carotid bodies from five subjects free from cardiopulmonary disease and from eight subjects with carotid body hyperplasia. Six of the cases with enlargement of the carotid body had been exposed to chronic hypoxemia in life (due to panacinar pulmonary emphysema in five instances and the pickwickian syndrome in one case), and the other two cases had had systemic hypertension. The cases of carotid body hyperplasia showed an increased nerve density associated with the characteristic proliferation of elongated cells. These findings confirm that the proliferating cells in carotid body hyperplasia are both sustentacular and Schwann's cells, not fibroblasts, and suggest that these cells develop to support an increased number of nerve axons. The mechanisms by which two such different stimuli as chronic hypoxemia and raised intravascular pressure bring about an increased nerve density are obscure. PMID- 3838454 TI - Morphology of skeletal muscle in children. An assessment of normal growth and differentiation. AB - Muscle fiber size and relative proportion and size of type 1 and 2 fibers were studied in postmortem samples of diaphragm, rectus abdominis, quadriceps, and deltoid of 28 infants and children. The rate of fiber growth varied with age, muscle, and fiber type. Type 1 fibers were smaller than type 2 fibers in preterm and term neonates and histologic identification of pathologic type 1 fiber size disproportion may thus not be possible in the young infant. Isolated groups of type 1 fibers unaccompanied by other evidence of neuropathy may be seen in normal children and may reflect normal variation in motor unit innervation patterns. Definition of normal muscle growth provides a standard for evaluating diagnostic material and allows insight into normal neuromuscular maturation. PMID- 3838455 TI - Cellular distribution of cathepsin D in childhood tumors. AB - Cathepsin D is an acidic endopeptidase that has been found in the cytoplasm of neurons and other cells. To test the hypothesis that the cellular content or distribution of cathepsin D may serve as a marker of neuronal differentiation in childhood neoplasia, we performed an immunocytochemical study of the cathepsin D content of tumors that occurred in 49 pediatric patients. We found diffuse, moderate to heavy staining primarily in differentiating neurogenous tumors and minimal staining in one Wilms' tumor, one Ewing's sarcoma, and one rhabdomyosarcoma. Benign reactive histiocytes stained intensely in most tumors. We concluded that although the presence of cathepsin D in malignant cells is not diagnostic of neural tumors, it may serve as a marker for cellular maturation in neuroblastomas and as a marker of macrophage infiltration in human tumors. PMID- 3838456 TI - Aggressive fibromatosis of the breast. AB - Fibromatosis of the breast results in aggressive, infiltrative lesions with a propensity for local recurrence. We describe an unusual case of fibromatosis producing a growth resembling carcinoma in a 39-year-old woman. Recognizing this infrequently encountered condition is important to avoid unnecessary radical surgery. PMID- 3838457 TI - Filamentous Histoplasma capsulatum endocarditis involving mitral and aortic valve porcine bioprostheses. AB - We report a case of histoplasmosis capsulati endocarditis simultaneously infecting a mitral and aortic porcine bioprostheses. Histologically, the fungus demonstrated a diversity of morphologies, ranging from typical, intracellular, 2- to 5-micron yeast cells, to septate and branching hyphae, to bizarre hyphae with vesicular swellings. Cultures obtained from both valves were positive in four days. The combination of unexpected histologic appearance and rapid growth in culture may pose problems in diagnosis. PMID- 3838458 TI - Cellular breakdown within muscular arteries in hypercholesterolemic rats. AB - Adult male rats were fed a high-fat cholesterol, thyroid-suppressive diet for three months, after which the structure of the muscular arteries (coronary and tarsal pedis) was examined by transmission electron microscopy. The plasma cholesterol concentration was elevated when the animals were killed and a distinct ultrastructural finding was the presence of necrotic cells in the media of both the coronary and the tarsal pedis arteries. Medial smooth muscle cells contained multivesicular membranous bodies, and membranous material accumulated in the intercellular space of the arterial media. It is proposed that the membrane changes and cellular death within muscular arteries may primarily be due to the increased membrane cholesterol concentration of smooth muscle cells during hypercholesterolemia. Dietary saturated fatty acids may have a contributing effect on smooth muscle cell injury in the hypercholesterolemic state. PMID- 3838459 TI - Mineral oil lipogranulomata in liver and spleen. A study of 465 autopsies. AB - Lipogranulomata (LG) are commonly seen in human tissues but the location and significance of these lesions are incompletely documented. In a study of 465 autopsies LG were found in 48% of livers and 46% of spleens. Hepatic LG were more common in portal tracts than adjacent to the terminal hepatic venules. There was a close correlation between hepatic LG in liver and in spleen. The incidence and severity of hepatic LG were higher in older adults, especially men. There was no evidence that LG caused hepatic dysfunction or portal hypertension. The absence of correlation with hepatic steatosis supports the suggestion that LG are secondary to mineral oil deposition rather than to steatosis. PMID- 3838460 TI - Malignant melanoma of the tongue following low-dose radiation. AB - A 47-year-old man had a spindly malignant melanoma of the tongue many years after low-dose radiation therapy for lichen planus. To our knowledge, only 12 melanomas of the tongue have been reported previously, and in none of these was radiation documented. PMID- 3838461 TI - Ependymoma-like tumor of the mesovarium. AB - We report a case of primary extramedullary ependymoma, arising from the mesovarium in a 47-year-old woman and discovered incidentally during routine hysterectomy for uterine leiomyomas. The tumor exhibited the light microscopic, immunohistochemical, and ultrastructural features of a typical ependymoma, including a prominent pseudorosette pattern, positive staining for glial fibrillary acidic protein, and electron microscopic visualization of microvilli, intermediate filaments, basement membranes, and long cytoplasmic processes. While the occurrence of subcutaneous ependymomas in the sacrococcygeal region and metastatic central nervous system tumors at various sites are familiar, we believe this case to be a rare example of a primary ependymoma arising in a different and unusual extramedullary location. PMID- 3838462 TI - Liposarcoma of the larynx. AB - To our knowledge, only seven cases of laryngeal liposarcoma have been reported in the English language literature. We add an eighth case and review the other seven cases. Our patient presented with a pedunculated mass arising from the left aryepiglottic fold and obstructing both the larynx and pharynx. The lesion has recurred locally three times in a period of four years. We discuss pathologic findings and management of this patient. PMID- 3838464 TI - Auditory capabilities of single-channel cochlear implant patients. Etiologic considerations. AB - The clinical audiometric test results from 53 postlingually deafened adults using the House single-channel cochlear implant were analyzed according to cause of deafness (otosclerosis, ototoxic drugs, meningitis, and trauma). With the exception of one measure, the routine clinical tests did not show a relationship between cause of deafness and performance with the cochlear implant. These findings suggest that, clinically, the single-channel cochlear implant is a viable prosthesis for patients with a wide variety of causes of deafness. PMID- 3838463 TI - Quantitative computed tomography of Graves' ophthalmopathy. Extraocular muscle and orbital fat in development of optic neuropathy. AB - Quantitative assessment of computed tomographic (CT) scans was performed on 98 orbits of 49 patients with Graves' ophthalmopathy. Extraocular muscle volume and orbital fat volume were determined, according to whether optic neuropathy was absent, had developed during follow-up, or was present at the time of scanning. No differences in muscle volume were found between the group already having optic neuropathy and the group in which optic neuropathy developed during follow-up. Both optic neuropathy groups, however, had significant increases in extraocular muscle volume compared with the group without optic neuropathy. The absolute amount of orbital fat was the same for all groups, but the relative amount of orbital fat tended to decrease as total orbital volume increased with development or presence of optic neuropathy. This study establishes a quantitative relationship between optic neuropathy and extraocular muscle enlargement in Graves' ophthalmopathy. Orbital fat, however, does not play an important role in the disease. PMID- 3838465 TI - A software package for administering and monitoring the Environmental Symptoms Questionnaire (ESQ-III). AB - The latest version of the Environmental Symptoms Questionnaire (ESQ-III) contains 67 symptoms designed to allow researchers to evaluate a broad range of environmental stresses. We have developed an interactive computer software package that administers and monitors the ESQ-III. This package, written in a format maximizing clarity, provides consistency of administration from one test or day to another, checks for response inconsistencies, maintains subject motivation, provides feedback to the subject and allows an investigator to quickly inspect raw and computed results. Further, because there is no interaction between investigators and subjects, no experimenter bias can be introduced. This package can be adapted to almost any computer system having a CRT and at least one disc drive. PMID- 3838466 TI - [Treatment of ear mange in rabbits with ivermectin]. PMID- 3838467 TI - Identification of intestinal cells responsive to calcitriol (1,25 dihydroxycholecalciferol). AB - The location of intestinal cells taken from the base of the crypt to the tip of the villus responsive to calcitriol (1,25-dihydroxycholecalciferol) and the distribution of [3H]calcitriol within the intestinal epithelium has been determined in vitamin D-deficient rats. The calcitriol responses examined were CaBP (Ca2+-binding protein) levels as measured by immunodiffusion and alkaline phosphatase levels as determined cytochemically. Calcitriol had no effect on villus structure or on enterocyte kinetics. This made it possible to compare levels of CaBP and alkaline phosphatase activity in enterocytes at different ages in rats at known times after hormone injection. Cells from both the crypt and villus synthesized CaBP in response to calcitriol. Alkaline phosphatase activity was not detectable in crypt cells, although a pool of precursor was produced in these cells in response to calcitriol. Enzyme activity was increased in all villus cells in response to calcitriol, but the quantitative description of this effect was very different from that found for calcitriol effects on CaBP synthesis. Calcitriol injected into vitamin D-deficient rats was detected, within 2h, in all cells of the crypt and villus. Most of the binding was to sites having a high affinity for the injected hormone. PMID- 3838468 TI - Molecular cloning of a bovine cathepsin. AB - A cDNA clone for a thiol endoproteinase has been isolated from a bovine heart cDNA library by using a mixture of 32 synthetic oligonucleotides as a hybridization probe. The inserted region is 672 base pairs in length. It contains a sequence encoding the C-terminal region of a protein that is homologous to rat liver cathepsins B and H and to plant thiol proteinases. In addition, it contains the sequence of 442 bases corresponding to the 3' untranslated region of the mRNA. The inserted region was used as a specific probe in RNA transfer analysis; the size of the mRNA encoding the thiol endoproteinase is estimated to be approx. 1.7 kilobases. Thus, the maximum size of the encoded protein is about 350-400 amino acids. PMID- 3838469 TI - Design of a new DNA-polyintercalating drug, a bisacridinyl peptidic analogue of Triostin A. AB - The synthesis of a new bifunctional compound in which two aminoacridine chromophores are linked by the bicyclic depsipeptidic backbone of des-N tetramethylTriostin A is described. The molecule, bis-[(9-acridinyl)-D-seryl-L alanyl-L-cysteinyl-L-valine] dilactone disulphide, structurally analogous to the antibiotic anti-tumour drug Triostin A, is shown to possess a high affinity to DNA and to act as a bis-intercalator on the basis of spectroscopic, viscosimetric and thermal-denaturation studies. This model constitutes the first attempt of a synergic association between a peptidic moiety that mimics a naturally occurring drug and aminoacridine, the two parts themselves each exhibiting a high affinity for the DNA target. PMID- 3838470 TI - Prevention of neonatal hyperbilirubinaemia in non-human primates by Zn protoporphyrin. AB - Non-human primates were used as a model of human neonatal hyperbilirubinaemia and its chemotherapeutic suppression. High levels of haem oxygenase activity were detected in the liver and the spleen of neonatal rhesus (Macaca mulatta) and cynomolgus (Macaca irus) monkeys. When 1-day-old neonatal animals were given a single injection of Zn-protoporphyrin (40 mumol/kg, subcutaneously), serum bilirubin levels declined to nearly normal adult levels within 24 h and remained suppressed throughout the postnatal period (12 days). This treatment inhibited the activities of haem oxygenase and biliverdin reductase in the liver and the spleen, without affecting that of the brain. Zn-protoporphyrin treatment did not alter the activity of brain biliverdin reductase or increase brain bilirubin levels. The biological disposition of Zn-protoporphyrin was examined by measuring the biliary and urinary excretion of the metalloporphyrin complex, as well as its uptake and deposition in blood cells and tissues. Biliary excretion of the metalloporphyrin was minimal (0.12% over a 28 h period), and no evidence was detected for the urinary excretion of Zn-protoporphyrin. However, the concentration of metalloporphyrin in erythrocytes increased over the duration of the experiment (11 days) to such an extent that 46% of the administered compound was taken up by the cells. It appeared that the molecular basis for the sustained suppression of haem oxygenase activity and bilirubin production by Zn protoporphyrin involved the release of the metalloporphyrin in the normal process of the degradation of fetal erythrocytes. The scope of the biological activity of Zn-protoporphyrin to alter haem-dependent processes appeared limited in nature, insofar as the microsomal contents of cytochrome P-450 and b5, as well as the aniline hydroxylase, were similar to those of the control animals. Also, the concentration of glutathione in the liver was unchanged. These findings suggest the potential usefulness of Zn-protoporphyrin in experimental and perhaps clinical conditions in which hyperbilirubinaemia occurs. PMID- 3838471 TI - Lipoxene: a new group of trihydroxy pentaenes of eicosapentaenoic acid derived from porcine leukocytes. AB - Incubation of porcine leukocytes with [1-14C]-15-hydroperoxyeicosapentaenoic acid (15-HPEPE) results in the formation of a group of polar metabolites which after separation and purification by RP-HPLC and SP-HPLC were found to be a series of new compounds containing three hydroxy groups and four conjugated double bonds. The structures of these new metabolites were established by U. V. spectrophotometry and GC/MS to be trihydroxy pentaenes of EPA, i.e., 5,6,15 trihydroxy-7,9,11,13,17-eicosapentaenoic acid and 5,14,15-trihydroxy-6,8,10,12,17 eicosapentaenoic acid. Because of the additional double bond at C17-18, these two new metabolites of EPA were proposed to be lipoxene A and lipoxene B, respectively. PMID- 3838472 TI - Phosphorylation of 2-5A core 5'-diphosphate to 2-5A in mouse L cell extracts. AB - When added to extracts of mouse L cells containing ATP and an energy regenerating system, the 5'-diphosphate of 2-5A core, pp5'A2'p5'A2'p5'A, as well as a bromoadenylate analog, pp5' (br8A)2'p5'(br8A)2'p5'(br8A), can be phosphorylated to the corresponding 5'-triphosphate, ppp5'A2'p5'A2'p5'A and ppp5'(br8A)2'p5'(br8A)2'p5(br8A), respectively. The extent of this conversion was about 0.5% when the concentration of 5'-diphosphate was about 10(-4) M. Thus, although previous studies have shown that the 5'diphosphate, pp5'A2'p5'A2'p5'A, can activate the 2-5A-dependent endonuclease, this may be related to a phosphorylation reaction in the crude cell extracts employed in these studies and may not represent a true ability of such a 5'-diphosphate to activate directly the endonuclease. PMID- 3838473 TI - Biosynthesis of riboflavin. An aliphatic intermediate in the formation of 6,7 dimethyl-8-ribityllumazine from pentose phosphate. AB - 6,7-Dimethyl-8-ribityllumazine synthase deficient mutants of Candida guilliermondii were divided into two groups on the basis of in vitro complementation. Mutants of complementation group I produce an intermediate X from ribose 5-phosphate in a reaction requiring Mg++ ions. Compound X was partially purified and was shown to be a phosphoric acid ester. 6,7-Dimethyl-8 ribityllumazine can be formed from Compound X by cell extracts from mutants of complementation group II. The reaction requires 5-amino-6-ribitylamino-2,4(1H,3H) pyrimidinedione or its 5'-phosphate as second substrate. No divalent cations are required. PMID- 3838474 TI - Binding of new PLP analogs to the catalytic domain of GABA transaminase. AB - The binding site of Pyridoxal-5-P in 4-aminobutyrate aminotransferase was studied by using analogs of the cofactor. A phosphorothioate analog (PLP(S] recognizes the catalytic site; it forms a stable complex with the apoenzyme (KD = 1nM) and serves as cofactor during catalysis. Replacement of a non-bridged oxygen by sulfur in the phosphate side chain renders a compound which preserves the negative charges needed for correct alignment of the cofactor at the catalytic site. This phosphorothioate analog of PLP can be used to investigate the catalytic site of vitamin B6 dependent enzymes by means of 31P NMR spectroscopy. A bulky P-pyridoxamine derivative, ie, N-4-azido-2-nitrophenyl pyridoxyl-5-P (NANP) competes with natural cofactor for its binding site. Upon illumination, the arylazide of P-pyridoxamine acts as an efficient photolabeling reagent of the protein. A characteristic feature of this photolabeling reagent, ie, its ability to recognize the cofactor binding site, can be exploited to ascertain the chemical nature of amino acid residues at the catalytic site. PMID- 3838475 TI - Reactive oxygen species may cause myocardial reperfusion injury. AB - The pathogenic mechanisms responsible for heart damage following temporary coronary artery occlusion are unknown. Some damage may be mediated by a normal cellular enzyme, xanthine dehydrogenase, which converts to xanthine oxidase during myocardial ischemia. Reperfusion, with restoration of oxygen supply, may then lead to formation of superoxide by xanthine oxidase, possibly initiating a cascade of oxidative events. In support of this, reperfusion of transiently ischemic canine myocardium leads to a rapid loss of cellular glutathione and a decrease in catalase activity, both indicative of enhanced generation of activated oxygen. Allopurinol--an inhibitor of xanthine oxidase--ameliorates both biochemical damage and functional deficits ordinarily triggered by ischemia and reperfusion, suggesting one possible mode of pharmacologic intervention following acute myocardial infarction. PMID- 3838476 TI - Stereospecific microbiological 10-O-demethylation of R-(-)-10,11 dimethoxyaporphines. AB - The microbiological O-dealkylation of (+) and (-) 10,11-dimethoxyaporphine and the corresponding N-n-propyl analog 10,11-dimethoxy-N-n-propylnoraporphine utilizing the fungus Cunninghamella elegans (ATCC 9245) was found to proceed with regioselectivity for the 10-position, and with a high degree of substrate stereospecificity for the 6a R(-)enantiomer. Only the (R) 10-demethylated products were isolated i.e. (R) iosapocodeine and (R) N-n-propylnor isoapocodeine. The products were confirmed by comparison with their GC/MS spectra. PMID- 3838477 TI - The unique action for bone metabolism of 1 alpha,25-(OH)2D3-26,23-lactone. AB - [23 (S), 25 (R)]-1 alpha,25-Dihydroxyvitamin D3-26,23-lactone [( 23 (S),25 (R)]-1 alpha,25-(OH) 2D3-26,23-lactone) increased dose-dependently alkaline phosphatase activity in osteoblastic cells, clone MC3T3-E1, in medium containing 0.1% bovine serum albumin. The maximal stimulated enzyme activity per mg protein was 1.6-fold over that of control cultures at 250 pg/ml. The metabolite also increased collagen synthesis in a dose-related fashion. On the other hand, [23 (S),25 (R)] 1 alpha,25-(OH)2D3-26,23-lactone decreased slightly but significantly 45Ca mobilization, and blocked the resorptive action of 1 alpha,25-dihydroxyvitamin D3 but not that of parathyroid hormone, in mouse calvaria in organ culture. These results indicate that [23 (S),25 (R)]-1 alpha, 25-(OH)2D3-26,23-lactone stimulates the differentiation of osteoblasts and inhibits bone resorption in vitro. PMID- 3838478 TI - Detection of tsh binding inhibiting antibodies (TBI-ab) and thyroid adenylate cyclase stimulating antibodies (TS-ab) in sera of patients with Graves' disease. AB - In the sera of patients with Graves' disease have been demonstrated the immunoglobulins able to inhibit the binding of TSH to the human thyroid membrane (TBI-Ab) and the immunoglobulins stimulating the thyroid adenylate cyclase (TS Ab). The present study was performed in 75 hyperthyroid Graves' patients to ascertain the pathophysiological significance of these immunoglobulins. TS-Ab and TBI-Ab prevalence appeared to be much higher in the untreated and in relapsing patients than in subjects in remission. When the results of TBI-Ab and TS-Ab were compared in each group of patients no correlation was found between the two activities. We conclude that the TBI-Ab and the TS-Ab are the markers of hyperthyroidism in Graves' disease but the two activities are not equivalent and probably reflect a different phenomenon concomitantly produced. PMID- 3838479 TI - A double-blind placebo controlled study to examine effects of sucralfate on paracetamol absorption. PMID- 3838480 TI - The effects of 6-mercaptopurine nucleotide derivatives on the growth and survival of 6-mercaptopurine-sensitive and -resistant cell culture lines. AB - 6-Mercaptopurine (MP)-sensitive and -resistant cell culture lines were used to further characterize the apparent ability of MP nucleotide derivatives to overcome resistance to the parent drug. 6-Mercaptopurine-9-beta-D-ribofuranoside 5'-monophosphate [MPRP], bis(6-mercaptopurine-9-beta-D-ribofuranoside)-5', 5"' monophosphate [bis(MPR)P], bis(O2',O3'-dibutyryl-6-mercaptopurine-9-beta-D ribofuranoside)-5', 5"'-monophosphate [bis(dibut.MPR)P], and O2',O3'-dibutyryl-6 mercaptopurine-9-beta-D-ribofuranoside 5'-monophosphate [dibut.MPRP] were tested for cytotoxic and/or growth inhibitory effects against MP-resistant sublines of V79 Chinese hamster lung fibroblasts (CH/TG) and L1210 mouse leukaemia cells (L1210/MPR) in which deficiencies of hypoxanthine-guanine phosphoribosyltransferase, and hence drug nucleotide forming capacity were the basis of resistance. L1210/MPR cells were totally resistant to 1 mM 6 mercaptopurine-9-beta-D-ribofuranoside [MPR] and 2 mM MPRP, but were inhibited by high concentrations (greater than 0.25 mM) of bis(MPR)P. These results suggested that bis(MPR)P was taken up by cells as the intact molecule since MPR and MPRP were its extracellular breakdown products. L1210/MPR cells were much more sensitive to the lipophilic bis(dibut.MPR)P derivative which had a predominantly cytotoxic action as judged by trypan blue staining and the ability of treated cells to produce macroscopic colonies in soft agar medium. However, cells killed by bis(dibut.MPR)P did not disintegrate appreciably over periods of up to 10 days. The effects of bis(dibut.MPR)P were probably the result of cellular uptake of the intact molecule. Dibut.MPRP showed minimal ability to inhibit L1210/MPR cells although this compound was a possible breakdown product of bis(dibut.MPR)P and a source of the same extracellular degradation products. The median cell size decreased in L1210/MPR cultures during exposure to both bis(MPR)P and bis(dibut.MPR)P. This effect was elicited more rapidly and at lower concentration by bis(dibut.MPR)P than by bis(MPR)P. In contrast, sodium butyrate, a breakdown product of bis(dibut.MPR)P induced increases in cell size at high concentration. Bis (dibut.MPR)P was also cytotoxic to MP-resistant CH/TG cells and was approximately 300 times more effective than bis(MRP)P and MPR which exhibited similar activity against this cell line. Bis(dibut.MPR)P and dibut.MPRP were equivalent and less active than MPR in their effects on MP-sensitive L1210/0 cells where their predominant mechanism of action was via degradation to release MPR.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3838481 TI - Quality of life measurement in breast cancer patients. PMID- 3838482 TI - Single cell DNA measurements in benign cutaneous lymphoid infiltrates and in positive patch tests. AB - Cellular DNA in skin biopsies from eighteen patients with positive patch tests and eleven patients with benign lymphocytic skin infiltates (cutaneous lymphocytoma, lymphoplasia or Jessner's lymphotic infiltrate) was estimated by flow cytometry of propidium iodide-stained dermal cells. Specimens from three patients with patch tests and one with cutaneous lymphocytoma had DNA histograms similar to those of normal blood mononuclear cells. The remaining patients demonstrated DNA histogram abnormalities in the form of hyperdiploid peaks in forty-two of forty-five specimens. The estimated proportion of cells in the S phase was similar in patch tests (median: 9.2%) and in benign lymphocytic skin infiltrates (median: 9.6%). The median number of cells in the G2/M-phase was 3.1% in both groups of disorders. These data indicate DNA content heterogeneity of the dermal cells in benign lymphocytic skin infiltrates. This may be attributed to DNA replication and/or chromatin dispersion during cellular activation and proliferation. The data also emphasize that hyperdiploid peaks are not necessarily indicative of the presence of separate cell clones. PMID- 3838483 TI - The effect of pressure on the lipid microviscosity and phase transition of lung surfactant. AB - The effect of pressure on the lipid dynamics of the rat lung surfactant was studied in liposomes made of the natural lung surfactant of the rat and of model phospholipid mixture. The determined parameter was the lipid microviscosity, monitored by the fluorescence polarization of the probe 1,6-diphenyl-1,3,5 hexatriene. Osmotic pressure of up to 47 atm, as well as hydrostatic pressure of up to 1.4 kbar, were applied at a constant temperature. The effect of pressure was monitored by the change in the lipid microviscosity of the system. The maximal change achieved with osmotic pressure at a constant temperature was only 30%. This suggests that the conversion of melted lipid to its solid phase above the lipid critical temperature requires several hundred atmospheres. Similarly, measurements of lipid microviscosity under increased hydrostatic pressure revealed transitions which occurred at above 400 atm. Since such pressures are far beyond the physiological scale, it excludes the possibility that pressure alone can be responsible for a full phase transition of the lung surfactant during respiration. Upon decompression, microviscosity of the examined lipid system was found to return to its original values, confirming the reversibility of the process. PMID- 3838484 TI - Immunologically related multimeric forms of 30-40 kDa peptides associated with lung surfactant in various mammalian species. AB - A comparative study of lung surfactant associated proteins was undertaken to determine which mammalian species would best serve as models for investigating alterations of the human lung surfactant system. Sodium dodecyl sulfate polyacrylamide gel electrophoresis of purified surfactants in the presence of dithiothreitol revealed that surfactant invariably contains at least one peptide with molecular weight of 30 000-40 000. In the absence of disulfide reducing agents, the above peptides were in the form of high-molecular-weight proteins (greater than 400 kDa) in primates and cat, whereas in dog, rat and rabbit, the protein was a 72 kDa dimer. The 30-40 kDa peptide subunits were isolated from human, rat and dog surfactants and found to contain four or five residues of hydroxyproline. Antisera to either the human 34 kDa peptide or high-molecular weight proteins reacted with the high-molecular-weight bands, the 34 kDa subunit and at least six intermediate disulfide-linked forms separated from purified human surfactant by electrophoresis under nonreducing conditions. Following electrophoresis in the presence of dithiothreitol, both antisera detected the 34 kDa peptide as well as other peptides ranging in molecular weight from 23 000 to 160 000. The isolated 34 kDa peptide readily reaggregated into disulfide-linked forms including 68 and 100 kDa complexes which were not reduced by 40 mM dithiothreitol. We conclude that the 34 kDa surfactant-associated peptide forms a complex system of monomeric and multimeric proteins, which varies among the species and could conceivably vary in distribution during lung development or disease. PMID- 3838485 TI - Phospholipid surface bilayers at the air-water interface. I. Thermodynamic properties. AB - Dispersions of dimyristoylphosphatidylcholine (DMPC) in water spontaneously form a surface bilayer at the equilibrium air/water surface (Gershfeld, N. L., and K. Tajima, 1979, Nature [Lond.]. 279: 708-709). This phenomenon has now been demonstrated with dispersions of dioleoylphosphatidylcholine (DOPC), dipalmitoylphosphatidylcholine (DPPC), and with a mixture of DMPC and DOPC. Each of these dispersions forms a surface bilayer at a singularity in temperature that is a characteristic of the phospholipid. The surface bilayer formed by the lipid mixture is shown to have the same composition as the bulk liquid-crystal phase of the dispersion, and the surface components have identical partial molar entropies as the bulk lipid components. These properties indicate that the surface bilayer has the same structure as the bilayer in the liquid-crystal phase of the bulk dispersion. PMID- 3838486 TI - Pressure effect on the rate of crystalline phase formation of L-alpha dipalmitoylphosphatidylcholines in multilamellar dispersions. AB - Fully hydrated dipalmitoylphosphatidylcholine (DPPC) in multilamellar dispersions undergoes a subtransition between the crystalline Lc phase and the gel L beta phase. This so-called subtransition occurs only if the DPPC-H2O system has been incubated at temperatures near 0 degrees C for an extended period. We have examined the effect of pressure, up to 336 atm, on the rate of crystalline Lc phase formation of multilamellar DPPC dispersions at 0 degrees C. The hydrostatic pressure is generated by a centrifugal field; the formation of the lamellar Lc phase in the multicomponent DPPC dispersions is monitored calorimetrically at ambient pressure. Results indicate that the rate of formation of the hydrated crystalline Lc phase decreases with increasing pressure. Based on transition state theory, the retardation of the formation of the hydrated crystalline Lc phase by pressure is due to an increase in the volume of the lipid-water system when the activated state is formed. We interpret that the positive value of activation volume is attributed primarily to the dehydration of the lipid polar head group. Although the acyl chain ordering and the head group dehydration are both associated with the L beta----Lc phase transition, the observation of the pressure effects on the rate of crystalline Lc phase formation is used to show that the head group dehydration plays a predominant role in controlling the kinetics of the L beta----Lc phase transition. PMID- 3838487 TI - The activity of phosphorothioate analogues of ATP in various smooth muscle systems. AB - Phosphorothioate analogues of adenosine 5'-triphosphate (ATP) have been tested on the rat and guinea-pig vas deferens, the guinea-pig taenia coli and urinary bladder. Adenosine 5'0-(2-thiotriphosphate) (ATP beta S) was more active than adenosine 5'0(1-thiotriphosphate) (ATP alpha S) and ATP in producing contractile responses on the vas deferens of rat and guinea-pig, and guinea-pig bladder, though the difference of potency was less marked for producing relaxation of the carbachol-contracted taenia coli. No differences were observed between the A and B diastereoisomers of ATP alpha S or ATP beta S. Contractions of the vas deferens produced by ATP alpha S were of much longer duration than those produced by ATP beta S. When tested against electrically-evoked twitch responses of the vas deferens the order of potencies was reversed with ATP being most active and ATP beta S least active. These inhibitory effects were blocked by 8-phenyl theophylline. The calculated pA2 values for ATP, adenosine, beta, gamma-methylene ATP (APPCP) and ATP alpha S were similar, suggesting a common site of action. The results do not reveal any stereoselectivity among the tissues tested, for the diastereoisomers of ATP phosphorothioates; the observed differences of potency may be due to differences between ATP alpha S and ATP beta S in their rates of metabolism to adenosine. The different response profiles to the phosphorothioates may however reflect some differences of receptor mechanisms. PMID- 3838488 TI - Determination of the muscarinic receptor subtype mediating vasodilatation. AB - The muscarinic receptor mediating vasodilatation of the rabbit aorta and dog femoral artery has been assessed using muscarinic antagonists. With the exception of pirenzepine, the antagonist affinities were similar to those reported for the ileal receptors and dissimilar to those reported for the atrial receptors. Pirenzepine exhibited an affinity (7.54) intermediate between that reported for the CNS receptors (8.4) and that reported for the ileal receptors (6.77). This value for pirenzepine was confirmed using acetylcholine as the agonist and using the dog femoral artery as the vascular tissue. It is concluded that the muscarinic receptor profile mediating vasodilatation is not easily accommodated into the current receptor classification. PMID- 3838490 TI - Scientific research in osteopathy. PMID- 3838489 TI - Modification of endotoxin-induced haemodynamic and haematological changes in the rabbit by methylprednisolone, F(ab')2 fragments and rosmarinic acid. AB - The effects of methylprednisolone, F(ab')2 fragments of human gamma globulins and rosmarinic acid, an inhibitor of complement activation, were tested on endotoxin induced haemodynamic and haematological changes in the rabbit. Their effects were compared with complement depletion by cobra venom factor (CVF) pretreatment. The results provide further evidence for the role of complement activation and the concomitant triggering of the arachidonic acid cascade in the early phase of shock. The formation of vasoactive prostanoids (prostacyclin and thromboxane A2), the arterial hypotension and the thrombocytopenia were largely dependent on the presence of the intact complement system. F(ab')2 fragments (150 mg kg-1, i.v.) diminished the second fall in blood pressure to some extent but failed to alter any of the other endotoxin-induced changes. Methylprednisolone (40 mg kg-1, i.v.) given 10 min before endotoxin significantly reduced the activation of complement, the second rise of prostacyclin and the secondary hypotension, but was without effect on the early thromboxane peak of the haematological features of endotoxin shock. Rosmarinic acid (20 mg kg-1, i.v.) may be of potential interest for treatment of septic shock, since the drug suppressed the endotoxin-induced activation of complement, the formation of prostacyclin, both hypotensive phases, the thrombocytopenia and the concomitant release of thromboxane A2. The role of leukocytes and their arachidonic acid metabolites in plasma exudation deserves further investigation, because leukopenia and pulmonary oedema were not complement-dependent and were not affected by any of the treatments. Our results indicate that drugs, interfering with complement activation and/or prostaglandin biosynthesis, may be beneficial in endotoxin shock, provided that they are administered at an early stage. PMID- 3838492 TI - Heterogeneity of muscarinic cholinergic receptors in the developing chick embryo retina. AB - Heterogeneity of muscarinic cholinergic receptors was investigated in chick embryo retina throughout development and in chicks immediately after hatching. The presence of a homogeneous receptor population was evidenced by antagonist binding. The affinity of antagonists increased up to day 14 of incubation, when synaptogenesis occurs. After this stage, it remained substantially unchanged. The number of receptors increased in embryos until hatching. On the contrary, agonists, such as acetylcholine and carbachol, bound to two (high- and low affinity) binding sites. Through development, the affinity of both significantly increased until day 14, further substantiating the hypothesis of a maturation of the receptor pattern which precedes synapse formation. Muscarinic cholinergic binding seems to identify 3 critical steps in retinal neuronal development. The first is between 7 and 9 days of incubation, the second when synaptogenesis occurs and the third after initiation of function. PMID- 3838491 TI - Autoradiographic localization of muscarinic agonist binding sites in the rat central nervous system with (+)-cis-[3H]methyldioxolane. AB - (+)-cis-[3H]Methyldioxolane ((+)-[3H]CD), a potent muscarinic agonist, was used to label high-affinity agonist states of muscarinic receptors in thin tissue sections of the rat central nervous system. Light microscopic autoradiography of atropine-sensitive (+)-[3H]CD binding sites revealed regions of dense labeling (superior colliculus, inferior colliculus, lateral geniculate body, hypoglossal (XII) nucleus, facial (VII) nucleus, tractus diagonalis) and regions of sparse labeling (hippocampus, dentate gyrus). The inverse regional correlation between high-affinity (+)-[3H]CD states and binding sites for the muscarinic antagonists [3H]pirenzepine (r = -0.79) and (-)-[3H]quinuclidinyl benzilate (r = -0.30) underscores potentially important differences between agonist and antagonist binding to CNS tissue slices. PMID- 3838493 TI - Sexually abused children: identifying masked presentations in a medical setting. AB - Sexual abuse of children frequently lies hidden while the victims receive medical care for other complaints. To identify clinical signals of latent abuse, we studied 50 children whose initial presentations masked the presence of sexual abuse and compared them with 31 overt cases identified by chief complaint. A broad variety of symptoms masked the abuse. While some, such as early adolescent pregnancy and genital symptomatology, might have suggested the diagnosis, unusual physical symptoms, psychosomatic, and behavioral disorders were as frequent. The masked group differed significantly from the more frequently studied overt group in that chronic history of sexual abuse was twice as common; school problems and psychosomatic disorders were three times as frequent; the alleged abuser was more often an immediate family member, usually the father; male victims were more likely to present in this disguised manner. Familiarity with typical masked presentations should aid earlier identification of these troubled children. PMID- 3838494 TI - The business of hearts. PMID- 3838495 TI - A survey of sexually transmitted diseases diagnosed by physicians in Newfoundland. PMID- 3838496 TI - Future prospects in planning radiation therapy. AB - Recent advances in imaging, especially computed tomography and magnetic resonance imaging, and in the power and capabilities of reasonably priced computers and image display devices will permit a substantial extension of the scope of computer programs designed to help plan cancer therapy. All available diagnostic studies could be incorporated into the process of assessing the patient's disease, picking a treatment modality, and determining details of the selected treatment. Fully three-dimensional simulation of any possible treatment will be possible and methods for comparing and choosing between possible rival plans will be developed. Monitoring of the treatment machine and verification of the adequacy of the delivered treatment will be facilitated, and the follow-up of the patient and statistical analysis of the results of treatment can be incorporated into the overall programming system. PMID- 3838497 TI - Tumorigenicity of 5-methylchrysene dihydrodiols and dihydrodiol epoxides in newborn mice and on mouse skin. AB - 5-Methylchrysene, (+/-)-trans-1,2-dihydro-1,2-dihydroxy-5-methylchrysene, (+/-) trans-7,8-dihydro-7,8-dihydroxy-5-methylchrysene, (+/-)-trans-1,2-dihydroxy-anti 3,4-epoxy-1,2,3,4-tetrahydro-5-methylchrysene (anti-DE-I), (+/-)-trans-1,2 dihydroxy-syn-3,4-epoxy-1,2,3,4-tetrahydro-5-methylchrysene (syn-DE-I), and (+/-) trans-7,8-dihydroxy-anti-9,10-epoxy-7,8,9,10-tetrahydro-5-methylchrysene (anti-DE II) were tested for tumorigenicity in newborn mice and for tumor-initiating activity on mouse skin. In newborn mice, a total dose of 56 nmol of anti-DE-I induced 4.6 lung tumors/mouse and 1.2 liver tumors/mouse. These incidences were significantly higher than observed for any of the other metabolites, tested at equimolar doses. The results indicate that anti-DE-I, but not syn-DE-I or anti-DE II, is a major ultimate carcinogen of 5-methylchrysene in the newborn mouse. Anti DE-I was also more tumorigenic than anti-DE-II on mouse skin, inducing 4.4 tumors/mouse after an initiating dose of 100 nmol, compared to zero tumors per mouse induced by anti-DE-II. However, anti-DE-I was less tumorigenic on mouse skin than was its metabolic precursor, trans-1,2-dihydro-1,2-dihydroxy-5 methylchrysene or its parent hydrocarbon, 5-methylchrysene. PMID- 3838498 TI - Pediatric oncology group phase II trial of amsacrine in children with solid tumors. PMID- 3838499 TI - Use of a personal computer with an automatic noninvasive ambulatory blood pressure monitoring device. AB - Automatic ambulatory blood pressure monitoring is a valid and reliable tool for intermittent noninvasive assessment of blood pressure over a 24-hour period. However, reporting devices to retrieve data from the recording device are dedicated to one task and are expensive. Because of this, we have developed computer programs for a popular inexpensive microcomputer that retrieves data from the Del Mar Pressurometer III, an R-wave gated automatic ambulatory blood pressure monitoring device. Furthermore, the derived data may be edited, computed to derive statistics, stored, retrieved, displayed, and reported in both numerical and graphical format. This same hardware is used for multiple other tasks. PMID- 3838500 TI - Intracellular localization of 12-O-3-N-dansylamino TPA in C3H/10T1/2 mouse cell line. AB - The fluorescent 12-O-tetradecanoylphorbol-13-acetate (TPA) analogue dansyl-TPA allowed the distribution of fluorescent molecules to be visualized in living mouse fibroblasts. The entry of dansyl-TPA into cells occurred within millisecond time scale and was found largely energy independent. Dansyl-TPA was shown to stain the endoplasmic reticulum, Golgi apparatus, mitochondria and nuclear membrane. In addition, dansyl-TPA fluorescence was found to parallel that obtained with rhodamine-conjugated anti-alpha tubulin. The intracellular location of the dansyl-TPA fluorescence can be taken into account to explain the pleiotropic action of TPA in the cells. PMID- 3838501 TI - A BASIC computer program for use in evaluating enzyme-substrate-inhibitor kinetics. PMID- 3838502 TI - Alpha-methyldopa disposition in mothers with hypertension and in their breast-fed infants. AB - To assess the problem of alpha-methyldopa dosing in lactating mothers with hypertension, we studied three breast-feeding women to determine simultaneous plasma and breast milk concentrations of alpha-methyldopa after a 500 mg oral dose while receiving continuous therapy. Peak excretion of free alpha-methyldopa in breast milk ranged from 0.02 to 1.14 microgram/ml. The breast milk/whole plasma ratios of alpha-methyldopa ranged from 0.19 to 0.34. In two of the three breast-fed infants, plasma levels of alpha-methyldopa were undetectable (less than 0.05 microgram/ml) 6 hours after maternal ingestion of the drug, but in one of these the plasma alpha-methyldopa concentration was 0.09 microgram/ml 10 hours after maternal dosing. It is estimated that when the mother receives 1 gm alpha methyldopa a day, the maximal cumulative dose of alpha-methyldopa would be 855 micrograms and the average cumulative alpha-methyldopa load to the breast-fed infant would be 195 micrograms, or 0.02% of the maternal dose. PMID- 3838503 TI - An outcome-coded birth file from machine readable vital records. AB - We developed a computer program which generates an outcome-coded birth file from a standard birth file and a matched birth-infant death file. This program uses only anonymous computerized vital records of the kind available to researchers in most states. Despite a large population (Illinois 1977 births totaled 178,728) all death records were uniquely matched with birth records, allowing creation of the desired file. Such a file permits the researcher to use a variety of standard software packages without the problems of data re-entry or the use of multiple input files. Creating this outcome-coded file is relatively inexpensive, can be done without enlisting special assistance from state vital records personnel, does not require access to restricted files, and greatly streamlines use of perinatal vital records for research applications, especially multivariable modeling. PMID- 3838504 TI - A pocket computer program for common calculations in clinical pediatrics. AB - This paper describes the use of a short computer program designed for use in a pediatric hospital ward. The program performs metric conversions, obviates the need for nomograms for body surface area and base excess determinations, and rapidly and accurately computes parenteral fluid mixtures, medication dosages, creatinine clearance, erythrocyte sedimentation rate corrections, and serum osmolality. PMID- 3838505 TI - Transient spontaneous regression of an anterior mediastinal mass. AB - A case of spontaneous regression of lymphoma is presented. Regression of the tumor occurred during an episode of mechanical small bowel obstruction. Elevated circulating endogenous corticosteroids are thought to have acted against the tumor cells. PMID- 3838506 TI - [Primary malignant lymphoma of the gallbladder--a case report]. PMID- 3838507 TI - [Computerized tomography in endocrine ophthalmopathy with malignant exophthalmos]. AB - CT scanning was done in 16 patients with deterioration of sight in endocrine ophthalmopathy. The assessment involved muscular changes and density of retrobulbar fat. Evaluation of muscular changes was staged. In addition, exophthalmus was graded and evaluated by staging. More than two thirds of patients showed pronounced muscular thickening whereas the remaining patients showed few or no muscular changes. Likewise, in a number of patients exophthalmus could hardly be demonstrated according to Hertel's values. Thus, clinical presentation in a number of patients is relatively mild. Pathophysiologic considerations as to the development of deterioration of sight mainly involve myogenic compression of the optic nerve at its orbital entry. This does not seem to hold true for patients without muscular thickening. In such patients optic nerve affection could be caused by increase of the volume of the fat body. PMID- 3838508 TI - [Hemoglobin Linkoping and physical performance]. PMID- 3838509 TI - Some readily available computer programs for special types of statistical analyses. AB - A list of readily available computer programs for analysis of different types of experimental data is compiled. Some of these programs have been tested by the author for accuracy, and yet several others need to be checked by the users against existing tables and documents. The errors, to the author's knowledge, have been pointed out. Many of these programs may be used as subroutines in analyzing data derived from experiments in cytogenetics as well as other fields. PMID- 3838510 TI - Studies with general acyl-CoA dehydrogenase from pig kidney. Inactivation by a novel type of "suicide" inhibitor, 3,4-pentadienoyl-CoA. AB - 3,4-Pentadienoyl-CoA, an allenic substrate analog, is a potent inhibitor of the flavoprotein pig-kidney general acyl-CoA dehydrogenase. The analog reacts very rapidly (k = 2.4 X 10(3) min-1) with the native oxidized enzyme to form a covalent flavin adduct probably involving the isoalloxazine position N-5. This species is inactive, but activity may be regained by two pathways. The allenic thioester can be displaced (k = 0.3 min-1) by a large excess of octanoyl-CoA substrate upon reversal of covalent adduct formation. Alternatively, the enzyme inactivator adduct slowly decomposes (t1/2 = 75 min) to form the strongly thermodynamically favoured 2,4-diene and catalytically active, oxidized enzyme. During this latter process 15-20% of the activity is irreversibly lost probably due to covalent modification of the protein. These data suggest that 3,4 pentadienoyl-CoA should be considered a suicide substrate of the acyl-CoA dehydrogenase. The mechanism of the reactions, and in particular the 3,4----2,4 tautomerization, are consistent with a catalytic sequence initiated by abstraction of an alpha-hydrogen as a proton. PMID- 3838511 TI - Characterisation of rat 9-kDa cholecalcin (CaBP) messenger RNA using a complementary DNA. Absence of homology with 28-kDa cholecalcin mRNA. AB - The rat possesses two cholecalciferol-induced calcium-binding proteins, the cholecalcins (CaBP). The 9-kDa CaBP is mainly concentrated in the duodenum while 28-kDa CaBP is located in the kidney and cerebellum. The mRNA encoding 9-kDa CaBP has been characterised using the cloned cDNA, pC109, synthesised from rat duodenal 9-kDa CaBP mRNA [Desplan et al. (1983) J. Biol. Chem. 258, 13502-13505]. Nucleotide sequence analysis of this cDNA shows the presence of two stop codons, TGA and TAG, at positions 207 and 271, respectively, of the 3' untranslated region. The cDNA-hybridised mRNA, isolated from rat duodenum, directs the cell free synthesis of two proteins precipitable by antisera to 9-kDa intestinal CaBP. A major protein comigrates with 9-kDa CaBP whereas a minor product corresponds to a protein which is larger by 2000 Da. The minor protein appears to result from read-through of the 'leaky' UGA stop signal. No protein band which was immunoprecipitable with 28-kDa CaBP antiserum was detected when cDNA-hybridized mRNA from rat kidney and cerebellum was translated in a cell-free system. Northern blots show that the cDNA pC109 sequence hybridizes to a homogeneous mRNA species 500-600 nucleotides long from rat duodenum. Larger mRNA species encoding 28-kDa CaBP are undetectable in rat kidney and cerebellum even under low stringency conditions. All these findings demonstrate that there is no cross hybridisation between 9-kDa and 28-kDa CaBP mRNAs. Southern blot analysis of rat genomic DNA, that shows only one homologous 9-kDa gene, is consistent with these findings. Thus, all our data indicate that there are distinct genes coding for each rat cholecalcin. PMID- 3838513 TI - 131-Iodine capsules in thyroid therapy: an individually controlled study of their uptake kinetics as compared to liquid 131-iodine. AB - We investigated the uptake of therapeutic doses of 131-Iodine in capsular form which were given to 16 patients with benign thyroid disease, and compared it to the uptake of a diagnostic dose of liquid 131-Iodine given to the same patients. The aim of this study was to determine the additional radiation dose sustained by the gastric mucosa, and thus, to establish the safety of this galenic form of 131I. It was found that the average capsule-dissolution time was about 12 min, with a large standard deviation of about 7 min. Using these data and a theoretical radiation-dose calculation, we estimated that the maximum dose to the gastric mucosa was approximately 250 rad (250 cGy) for a therapeutic activity of 5 mCi (185 MBq), which is the maximum dose which may be given as single application to out-patients in Switzerland. Thus, 131I administered in capsular form is a safe galenic form for therapeutic use in patients with thyroid disease. PMID- 3838512 TI - The sequence of 967 amino acids at the carboxyl-end of rat thyroglobulin. Location and surroundings of two thyroxine-forming sites. AB - The entire rat thyroglobulin mRNA sequence (about 8500 nucleotides) has been cloned in five recombinant plasmids containing overlapping cDNA inserts. The 3' end of the mRNA is precisely defined by the poly (A) tail found in the furthest 3' end clone. Evidence that most of the 5' end is cloned come from size considerations and from a primer extension experiment. At the 3' end of the mRNA only one long open reading frame is present in the sequence of 3018 nucleotides that has been established. In the deduced protein sequence we have localized two thyroxine-forming sites in a region containing a high concentration of tyrosine residues. PMID- 3838514 TI - Differential antagonism by dicyclomine, pirenzepine and secoverine at muscarinic receptor subtypes in the rat frontal cortex. PMID- 3838515 TI - Wound healing by the rat lens after neodymium-YAG laser injury. AB - Wound healing of the ocular lens after exposure to neodymium-YAG laser energy (3.9-4.2 mJ) was studied. Male Sprague-Dawley rats were killed 5 min and 5, 9 and 15 days after the anterior lens epithelium was injured by a laser pulse. Gross and biomicroscopic examination revealed that a white, opaque mass formed on the lens surface after about 30 min. Five days later, the opacified mass present on the lens surface was found to be composed of ectopic epithelial cells, protruding lens fibers and a variety of other cell types. Epithelial cells were also present in abundance on the capsule surface in the immediate vicinity of the wound. Deep to the capsule, the lens fibers were greatly swollen. Half of the epithelial mounts obtained 5 days after surgery showed disorganization of the epithelium at points distant from the eosinophilic scar. The opacified external mass had disappeared from all of the lenses obtained at the 15-day period. However, the scar was readily identifiable in epithelial whole mounts, methacrylate sections and SEM specimens obtained from lenses at this time period. At every time period, many cortical fibers were swollen although the amount of swelling was less at 15 days than at earlier periods. The changes observed are similar to the lenticular alterations that occur after experimentally induced, transcorneal mechanical injury of the lens. PMID- 3838516 TI - [Pharmacology of troparil]. AB - The physiological action of the tropan derivative troparil (2-beta methoxycarbonyl-3-beta-phenyltropan or 2-exo-3-exo-2-carbomethoxy-aryltropan was studied. Troparil was demonstrated to be a highly active stimulant of the nervous activity according to a lot of parameters. The drug appeared more powerful than amphetamine but less toxic. PMID- 3838517 TI - In vivo catabolism of human low density lipoprotein in the rat is mediated by a nonsaturable, low-affinity mechanism. AB - The degradation of human low density lipoprotein (LDL) was analyzed in fasted rats treated for 3 days with either 4-aminopyrazolo-(3,4-d)pyrimidine (4APP) or saline. Treatment with 4APP caused an 80% decrease in serum cholesterol concentration. The mono-exponential serum decay of a tracer amount of labelled LDL was changed neither by 4APP treatment, nor by the simultaneous injection of a bolus of unlabelled LDL. The sites of degradation of human LDL were determined using the nondegradable labelling compound O-(4-diazo-3-[125I]iodobenzoyl)sucrose (D125IBS). The sites of degradation and the rate of degradation of D125IBS labelled LDL were also not affected by 4APP treatment or by injection of a bolus of unlabelled LDL. It is concluded that human LDL is catabolised in the rat by way of a nonsaturable, low-affinity mechanism. PMID- 3838519 TI - [Initiated chemiluminescence of surface-active substances in the lungs and blood serum]. PMID- 3838518 TI - Nucleotide sequence divergence and functional constraint in VIP precursor mRNA evolution between human and rat. AB - The nucleotide sequence analysis of cloned cDNA for VIP precursor from rat cerebral cortex reveals that the precursor contains both rat VIP and PHI-27. The deduced primary structure of rat VIP is identical with human VIP. The amino acid sequence of rat PHI-27 differs by 4 amino acids from human PHM-27. When each VIP precursor is divided functionally into 6 domains, the amino acid sequence homology between rat and human precursors ranges from 69 to 100%. In contrast, any domain exhibits an essentially equal degree of nucleotide sequence homology. PMID- 3838520 TI - Coordinate estrogen induction of vitellogenin and a small serum protein mRNA in Xenopus laevis liver. AB - We have used plus-minus hybridization to identify Xenopus liver cDNA clones of mRNAs whose levels are regulated by estrogen. One clone identified in this way was shown to be a nearly full-length cDNA clone of the mRNA coding for a small 22 000 dalton estrogen-inducible serum protein (EISP). Quantitation of EISP mRNA levels by in vitro translation and by hybridization to the cloned DNA demonstrated a 7-12-fold estrogen induction of EISP mRNA, both in vivo and in primary Xenopus liver cultures. The kinetics of induction of EISP mRNA closely parallel those of the mRNA coding for the abundant estrogen-inducible serum protein, vitellogenin. In contrast, the massive, and toxic, estrogen-mediated accumulation of vitellogenin in serum of male Xenopus laevis is accompanied by a sharp decline in the levels of albumin mRNA and in the levels of the mRNAs coding for several other serum proteins. PMID- 3838521 TI - Plasma glucagon and glucagon-like immunoreactive components in Type 1 (insulin dependent) diabetic patients and normal subjects before and after an oral glucose load. AB - Biogel P-30 filtration of plasma from Type 1 (insulin-dependent) diabetic patients and normal subjects in basal state and after an oral glucose load was assayed with a C-terminal (30 K) and a glucagon-like immunoreactivity-cross reacting antiserum (R8). Up to four immunoreactive peaks of approximate molecular sizes of greater than 20,000 (fraction I), 9000 (fraction II), 3500 (fraction III) and 2000 (fraction IV) were detected with the two antisera in both groups. In the basal state, the only significant difference observed between both groups was a higher R8-reactivity in fraction II in the group of diabetic patients, although the R8 minus 30 K values for this fraction did not show a significant difference between both groups. After glucose the only significant differences were an increase of R8-reactivity in fraction II in both groups (p less than 0.01) and a decrease of 30 K-reactivity in fraction III (IRG3500) in normal subjects (p less than 0.05). In seven out of 12 diabetic patients, 30 K reactivity in fraction II (IRG9000) and III (IRG3500) increased above their basal values. The gut-glucagon-like immunoreactivity response to oral glucose (delta R8 delta 30 K values in fraction II) was similar in both the diabetic and normal subjects. These results indicate that the paradoxical rise in plasma immunoreactive glucagon after oral glucose in diabetic patients may be due to an increase of both IRG3500 and/or IRG9000, the gut-glucagon-like immunoreactivity released during glucose absorption has a molecular weight of approximately 9000, and no differences in plasma gut-glucagon-like immunoreactivity were observed in Type 1 diabetic patients when compared with normal subjects, either in the basal state or after glucose ingestion. PMID- 3838522 TI - Alternate methods of preparing a sucralfate suspension. PMID- 3838523 TI - Interferons and other biological response modifiers in the treatment of Kaposi's sarcoma. PMID- 3838525 TI - [The Clements test: its correlation with the lecithin/sphingomyelin ratio, precipitable lecithin and phosphatidylglycerol]. PMID- 3838524 TI - Algorithm for the correction of artifacts. AB - The sources of vitreous fluorophotometry artifacts are described. An algorithm to define this "spread function" is presented. The use of improved instrumentation and compensation for this artifact by data processing of the "correction" algorithm can improve the results of vitreous fluorophotometry. This algorithm was carried out in 40 eyes and was found to have an error of 0.7 mg/ml at 3 mm from the choroid-retina. PMID- 3838526 TI - [Diagnosis and therapy of syphilis as well as other venereal diseases]. PMID- 3838527 TI - Studies on asphyxia: on the changes of the alveolar walls of rats in the hypoxic state. AB - The morphological changes of the alveolar wall of adult rats in the hypoxic state were studied by light and electron microscopy. The remarkable findings were the appearance of a large amount of lamellar, lattice- and thread-like structures together with a massive homogeneous substance on the surface of the alveoli which seemed to be closely connected with each other and with the surface of the cells lining the alveolus, especially in the 5%-group. The appearance of the above mentioned structures with the homogeneous substance is considered to be the reaction of lung tissue to the decreased content of oxygen in the inhaled gas. PMID- 3838528 TI - What hospitals think of application software. PMID- 3838529 TI - The changing pattern of sexually transmitted disease in adolescent girls. AB - When girls aged 15-19 attending a sexually transmitted diseases (STDs) clinic in 1972 and 1982 were studied retrospectively, the prevalence of recognised STDs declined both absolutely and as a proportion of the total women studied. The increased number of attendances was accounted for by "other conditions requiring, or not requiring, treatment." An alternative approach for the classification of these conditions is proposed. PMID- 3838530 TI - Recognition of hypochondriasis in a clinic for sexually transmitted disease. AB - A descriptive study of 100 consecutive patients referred for psychiatric assessment from a clinic for sexually transmitted disease (STD) is reported. Thirty six patients presented with physical symptoms for which no organic cause could be found. Various physical and psychological features of the overall presentation of this "somatic" group were identified. These are discussed in terms of diagnostic categories, aetiological mechanisms, and theories of illness behaviour. The importance of directly observable aspects of the patients' consultation behaviour is stressed over and above deep psychological constructs. The diagnosis of hypochondriasis is seen as essentially a medical one, which entails the doctor making a set of judgements that require a broad clinical perspective. PMID- 3838531 TI - Polymorphism of human complement component C4. AB - An assessment has been made of the polymorphism of human complement component C4 by comparing derived amino acid sequences of cDNA and genomic DNA with limited amino acid sequences. In all, one complete and six partial sequences have been obtained from material from three individuals and include two C4A and two C4B alleles. Differences were found between the 4 alleles from 2 loci in only 15 of the 1722 amino acid residues, and 12 lie within one section of 230 residues, which in 1 allele also contains a 3-residue deletion. In three variable positions, an allelic difference in one C4 type was common to the other types. Three nucleotide differences were found in four introns. In spite of marked differences in their chemical reactivity, the many allelic forms appear to differ in less than 1% of their amino acid residue positions. This unusual pattern of polymorphism may be due to recent duplication of the C4 gene, or may have arisen by selection as a result of the biological role of C4, which interacts in the complement sequence with nine other proteins necessitating conservation of much of the surface structure. PMID- 3838533 TI - Morphology and respiratory function of the alveolar unit. PMID- 3838532 TI - Morphology of three strains of contagious equine metritis organism. AB - Examination of recently isolated cultures of three strains of Contagious Equine Metritis Organism grown on specially formulated, serum-free, clear typing medium revealed the presence of numerous colonial opacity variants. These colonies were prepared by a number of fixation and staining techniques and examined by scanning and transmission electron microscopy. Opaque and transparent phenotypes produced copious amounts of extracellular material compared with intermediate-opacity phenotypes which produced little or none. Also unique to intermediate colonies were numerous thin intercellular strands, which may represent pili or polymers of extracellular material. The presence of an unusual fibrillar layer (with similar electron density to the extracellular material) on the outer leaf of the outer membrane also was confirmed. A number of other ultrastructural features also were noted, including an epilayer, a thin nonmembranous layer which covered colonies and adjacent agar. PMID- 3838534 TI - Leukotrienes: potent mediators of airway constriction. PMID- 3838535 TI - Smoothing techniques for obtaining reference values for measurements of children. AB - Constructing reference values for measurements of children, e.g. the mean height as function of age, one needs a smoothing technique. Various techniques will be discussed and applied to a particular study of anthropometric growth. The overall conclusion is that reliable curves can be obtained by using computer programs based on approximations by cubic splines, and by using the eye for choosing from the corresponding outputs. PMID- 3838536 TI - Numerical simulation of pulmonary O2 and CO2 exchange. AB - The process of gas exchange leading to the oxygenation of blood in pulmonary capillaries is simulated numerically, taking into account the main transport mechanisms of molecular diffusion, convection and the facilitated diffusion due to the presence of haemoglobin, as well as physiologically relevant boundary conditions and variable initial data. An algorithmic program to solve the relevant equations is run on a computer. It is found that, in the immediate neighbourhood of the entry, the amount of dissolved oxygen decreases, whereas the amount of carbaminohaemoglobin increases and the facilitated diffusion is more dominant over the molecular diffusion. Further, it is shown that (i) O2 takes longest and CO2 is the fastest to attain equilibration, (ii) the blood is completely oxygenated with one fifth part of its transit. Finally, the effect of various physiological parameters on equilibration length is examined. PMID- 3838537 TI - Fast algorithms for the analysis of sino-atrial node function. AB - The calculations of parameters of the sino-atrial node function have previously required the application of a non-linear least squares curve-fitting algorithm. We have compared five algorithms, three of which eliminate the need for direct non-linear least squares routines. The fast algorithms can provide greater accuracy while using less than 10% of the computing time. They make it feasible to provide real-time analysis during clinical electrophysiological studies. PMID- 3838538 TI - Altered experimental metastasis pattern by proteolytic cell treatment. AB - We have studied some cellular characteristics and the transplantability of a newly induced squamous cell carcinoma, Sq1-SC, in comparison with the ascites transformed subline of the same tumor, Sq1-AA. We could demonstrate that the AA tumor differed from the SC tumor in the pattern of intravenously induced 'experimental metastases'. The SC tumor preferentially gave rise to extrapulmonary tumor colonies ('metastases'), while the AA tumor exclusively gave rise to lung colonies. Comparison with the ascites tumor growing in solid form subcutaneously (AS tumor) shows that the enzymatic treatment, which is necessary to bring solid tumors into viable and dissociated suspensions, can have a decisive influence on tumor cell lodgement in vessels and metastasis. PMID- 3838539 TI - Analysis of environmental pollution by radiofrequency radiation from teleradiocommunication devices. AB - The environmental radiofrequency radiation pollution, including microwaves, generated by teleradiocommunication devices is particularly great where there exists a concentration of such apparatus. The wide-band field detectors commonly used for environmental protection surveys do not make it possible to discern the contributions of the individual emitters at a given point. It is possible to obtain this result theoretically by using only a personal computer, and by using the characteristics of the emitter and of surrounding territory as inputs. For this purpose, a basic program has been prepared. An analysis of this type, besides being an effective tool for the planning of environmental pollution abatement, provides the necessary information for forecasting field levels produced as a consequence of the installation of new repeaters. This data provides indispensable information for issuing installation licenses by the competent authorities. This article concludes with a comparison between the theoretical results and those detected experimentally in one specific case. PMID- 3838540 TI - Changing times for interns. PMID- 3838541 TI - Intrasubject experimental designs in osteopathic medicine: applications in clinical practice. PMID- 3838542 TI - Actuarial risk of isolated CNS involvement in Ewing's sarcoma following prophylactic cranial irradiation and intrathecal methotrexate. AB - Records of 154 patients with Ewing's sarcoma treated at the National Cancer Institute were reviewed to assess the incidence and risk of developing isolated central nervous system (CNS) Ewing's sarcoma. Sixty-two of the 154 patients had received CNS irradiation and intrathecal (i.t.) methotrexate as part of their initial therapy to prevent the occurrence of isolated CNS Ewing's sarcoma. The risk of developing isolated CNS Ewing's sarcoma was greatest within the first two years after diagnosis and was approximately 10%. The overall risk of CNS recurrence in the group of patients receiving CNS treatment was similar to the group receiving no therapy directed to the CNS. The occurrence of isolated CNS involvement was not prevented by the use of CNS irradiation and i.t. methotrexate. Because of a lack of efficacy to the CNS irradiation regimen, current treatment regimens do not include therapy directed to the CNS. PMID- 3838543 TI - Alteration of surfactant function due to protein leakage: special interaction with fibrin monomer. AB - In isolated rabbit lungs standardized amounts of edema were induced. Stimulation with the Ca ionophore A23187, leukotriene C4, Pseudomonas aeruginosa cytotoxin and human serum (activated complement) all resulted in protein leakage into the alveolar space with no change in the total phospholipid content. The pressure volume characteristics of the lungs and the characteristics of the lavage surfactant (Wilhelmy balance) were markedly altered, correlating to the lavage protein content. The surfactant alterations were reproduced by addition of perfusion fluid protein to control surfactant in vitro. All changes were far less expressed or even missing in isolated lungs developing the same amount of edema due to omittance of proteins from the perfusion liquid. Different proteins added to control surfactant in the Wilhelmy balance showed a marked rank order of potency in interfering with surfactant function: immunoglobulins G and M and elastin less than albumin less than fibrinogen less than fibrin monomers. The fibrin monomer effect was reproduced by addition of thrombin to a surfactant fibrinogen mixture and was partly reversed by subsequent incubation with plasmin. In conclusion, high-permeability edema induced by different means results in alterations of lung mechanics and surface activity of lavaged surfactant, presumably due to protein surfactant interaction. Among different proteins, fibrin monomers are especially effective in interfering with surfactant function. PMID- 3838545 TI - Normal phase liquid chromatographic determination of nanogram quantities of ivermectin in cattle blood or plasma. AB - A method has been developed for determining ivermectin in 5 mL samples of cattle blood by a 2-step process: cleanup solvent extraction followed by direct injection onto a normal phase liquid chromatography (LC) system with UV detection. Recovery was 77-80% +/- 5.5% standard deviation. Endogenous interference that may be present caused the lower limit of detection to be set at 4-5 ng/mL. The method was used to show that in blood the distribution of ivermectin favors plasma in a fixed proportion over cellular material, and further to provide a time-course profile of ivermectin in the whole blood of injected cattle. In whole blood, ivermectin concentration peaked between 3 and 5 days and dissipated slowly with a half-life of 3 days. PMID- 3838544 TI - Surfactants identified in lung lymph and their ability to act as abhesives. AB - Phospholipid has been extracted from pulmonary lymph collected from 10 dogs. Thin layer chromatography was used to identify phosphatidylcholine (PC) 55.6 +/- 2.9%, sphingomyelin 21.3 +/- 1.7%, phosphatidylethanolamine 11.2 +/- 4.9%, and lysophosphatidylcholine 5.9 +/- 0.8%. All extracts proved highly surface active, reducing the surface tension of saline to 27.7 +/- 0.7 dyn/cm upon 80% film compression and increasing the maximum contact angle on glass (theta) from 7 +/- 1 to 47.4 +/- 1.4 degrees. The hydrophobic properties induced on glass were further demonstrated by the ability to cause saline to withdraw and expose a dry surface. A standard adhesion test was used to measure the "tack" produced by the major proteins in lymph. However, when the surface energy of the hydrophilic glass surfaces was reduced by a monolayer of lymph phospholipid extract or an equivalent mixture of synthetic surfactants, the adhesive force was reduced by 79 +/- 4% for albumin and 55 +/- 4% for globulin. As a 0.1% liposomal suspension, PC gave 55% release with albumin. Reversible bonding of the lumen of lymph vessels by the "tacky" proteins present is discussed as a possible factor contributing to the large changes in flow resistance known to occur in the pulmonary lymphatic system. PMID- 3838546 TI - Isolation and structures of glucagon and glucagon-like peptide from catfish pancreas. AB - Both glucagon and the structurally similar glucagon-like peptide proteolytically derived from preproglucagon were purified from the endocrine pancreas of the channel catfish (Ictalurus punctata). This study represents the first report of the isolation of glucagon-like peptide from any source. Peptide sequences of glucagon-like peptide from other species have only been deduced from the cDNA sequences for preproglucagon. The sequence of the 34-residue glucagon-like peptide was found to be HADGTYTSDVSSYLQDQAAKDFITWLKSGQPKPE. Catfish glucagon-like peptide shares sequence identity at 26 of 31 residues with the putative glucagon like peptide from anglerfish preproglucagon II. The mass of catfish glucagon-like peptide was found by fast atom bombardment-mass spectrometry to be 3785, identical with the value predicted by sequence analysis. This suggests that no post-translational modification occurs beyond proteolytic processing. The sequence of catfish glucagon was determined to be HSEGTFSNDYSKYLETRRAQDFVQWLM(N,S). Catfish glucagon exhibits a high degree of immunologic similarity with porcine glucagon by radioimmunoassay, whereas catfish glucagon-like peptide does not. PMID- 3838547 TI - Rat alpha 1-acid glycoprotein. Gene sequence and regulation by glucocorticoids in transfected L-cells. AB - We have cloned and sequenced the rat gene coding for the acute phase reactant protein alpha 1-acid glycoprotein in order to determine which sequences are necessary for its regulation by glucocorticoids and which sequences are responsible for the sensitivity of this regulation to protein synthesis inhibitors. The gene contains six exons, as determined from the alpha 1-acid glycoprotein cDNA sequence, and five introns. Primer extension and S1 nuclease experiments have shown that there are two transcriptional start sites 4 base pairs apart. After cotransfection into mouse L-cells, the gene retains its inducibility by glucocorticoids, indicating that the sequences required for induction are within or around the gene. The induction of alpha 1-acid glycoprotein levels in transfected L-cells is sensitive to protein synthesis inhibitors, implying that in addition to the glucocorticoid receptor another protein(s) is necessary for full induction. PMID- 3838548 TI - Accelerated wound repair, cell proliferation, and collagen accumulation are produced by a cartilage-derived growth factor. AB - Cartilage-derived growth factor (CDGF), a cationic polypeptide of approximately 18,000 mol wt, was prepared from bovine articular cartilage; other sources were bovine and human scapular and costal cartilage. Previous studies have shown that CDGF stimulates the proliferation of cultured mouse fibroblasts as well as chondrocytes and endothelial cells from various sources. In this study, CDGF was shown to stimulate dose-dependently the accumulation of DNA and collagen by rat embryo fibroblasts and a population of fibroblasts derived from granulation tissue. CDGF also stimulated the proliferation of cultured bovine capillary endothelial cells dose-dependently. To evaluate the effects of CDGF in vivo, we implanted polyvinyl alcohol sponges subcutaneously in rats. 6 d postimplantation, sponges were injected with 300 micrograms of partially purified CDGF, a dose which takes into account the cell numbers in the sponges as compared with cell cultures. CDGF rapidly disappeared from the sponges and only approximately 10% of the initial dose was present at 4 h. Despite its transient presence, CDGF caused a relative increase in sponge DNA content of 2.6-fold at 48 h and 2.4-fold at 72 h. We repeated the sponge experiment by using 500-ng injections of CDGF purified to near homogeneity by heparin-Sepharose chromatography. Purified CDGF caused significant increases in sponge collagen, protein, and DNA content at 48 and 72 h after a single injection. The effects of CDGF were abolished by heat and unaffected by reduction of disulfide linkages. Morphologically, CDGF did not evoke an inflammatory response, and its effect on proliferating endothelial cells and fibroblasts was, therefore, probably direct. However, increases in DNA content of sponges could not be fully accounted for by increased DNA synthesis, which suggests that recruitment may be an important component of the in vivo response. Taken together, the effects of CDGF on cultured cells and granulation tissue suggest that the sustained presence of CDGF in vivo may greatly enhance its effects upon wound repair. PMID- 3838549 TI - Determination of folylpoly-gamma-glutamate carboxypeptidase (folacin conjugase) activity using reversed-phase high-performance liquid chromatography. PMID- 3838550 TI - Direct cortical projections to the parabrachial nucleus in the cat. AB - Direct projections from the cerebral cortex to the parabrachial nucleus in the cat were examined by the horseradish peroxidase (HRP)method. When HRP was injected into the parabrachial nucleus, retrogradely labeled neuronal cell bodies were seen, bilaterally with an ipsilateral predominance, mainly in the orbital gyrus, the lateral bank of the presylvian sulcus, and a restricted region in the infralimbic cortex on the medial surface of the frontal lobe (stereotaxic coordinates; Fr: 22, L: 1, H: -1); all labeled neurons were in deep pyramidal cell layer. After injecting HRP conjugated to wheat germ agglutinin (WGA-HRP) into the cortical regions where retrogradely labeled neurons were found after injecting HRP into the parabrachial nucleus, anterogradely labeled cortical fibers were traced to the parabrachial nucleus. Corticoparabrachial fibers originating from the orbital gyrus and the lateral bank of the presylvian sulcus ran ipsilaterally through the internal capsule and the cerebral peduncle down to the lower brainstem, whereas those from the infralimbic cortex coursed down ipsilaterally through the medial forebrain bundle. These cortical fibers to the parabrachial nucleus were distributed bilaterally with an ipsilateral predominance. Cortical fiber terminals in the parabrachial nucleus were topographically arranged: Corticoparabrachial fibers from the lateral bank of the presylvian sulcus ended most massively in the dorsal part of the lateral parabrachial nucleus. Corticoparabrachial fibers from the orbital gyrus ended most heavily in the medial parabrachial nucleus and less heavily in the lateral parabrachial nucleus. Corticoparabrachial fibers from the infralimbic cortex ended mostly in the parabrachial regions surrounding the brachium conjunctivum. PMID- 3838551 TI - Cochlear implants as sensory aids for deaf children. PMID- 3838553 TI - DiGeorge syndrome: long-term survival complicated by Graves disease. PMID- 3838552 TI - Characterization of 1 alpha-hydroxylation of vitamin D3 sterols by cultured alveolar macrophages from patients with sarcoidosis. AB - We investigated the 1 alpha-hydroxylation of vitamin D3 sterols by cultured pulmonary alveolar macrophages (PAM) from patients with sarcoidosis with or without clinically abnormal calcium homeostasis. Like the naturally occurring renal 1 alpha-hydroxylase, the PAM 1 alpha-hydroxylation reaction exhibited a high affinity for 25-hydroxyvitamin D3 (25-OH-D3) and a preference for substrates containing a 25-hydroxyl group in the side chain of the sterol. Unlike the renal enzyme, the PAM 1 alpha-hydroxylating mechanism was not accompanied by 24 hydroxylating activity, even after preincubation with 75 nM 1,25-dihydroxyvitamin D3 [1,25-(OH)2-D3] or exposure to high concentrations of substrate (500 nM 25-OH D3). The PAM 25-OH-D3-1 alpha-hydroxylation reaction was stimulated by gamma interferon and inhibited by exposure to the glucocorticoid dexamethasone. The characteristics of the PAM hydroxylation process in vitro appear to reflect the efficiency of the extrarenal production of 1,25-(OH)2-D3 and the therapeutic efficacy of glucocorticoids in patients with sarcoidosis and disordered calcium metabolism. PMID- 3838554 TI - Sorbothotics, soft tissue supplement orthoses. PMID- 3838555 TI - Dermacentor (Indocentor) auratus (Acari: Ixodoidea: Ixodidae): hosts, distribution, and medical importance in tropical Asia. PMID- 3838556 TI - Susceptibility of small mammals to nonvirulent spotted fever group rickettsiae. PMID- 3838557 TI - Crystallization of chicken egg white cystatin, a low molecular weight protein inhibitor of cysteine proteinases, and preliminary X-ray diffraction data. AB - The shorter-chain form of chicken egg white cystatin has been crystallized in 1.6 M-phosphate buffer at pH 4.0 by vapour diffusion. The crystals are of trigonal space group P3121 (or P3221), have cell constants a = b = 47.9 A, c = 87.5 A, alpha = beta = 90 degrees, gamma = 120 degrees, and contain one molecule of 12,191 molecular weight per asymmetric unit. They diffract well to about 2.0 A resolution and are suitable for X-ray crystal structure analysis. PMID- 3838558 TI - Mycotic aneurysms in intravenous drug abuse: diagnosis and management. AB - Mycotic aneurysms are caused by microorganisms in the vessel wall. The most commonly reported cause of mycotic aneurysms today is intravenous drug abuse. The diagnosis should be entertained whenever a mass is encountered over a major vessel in an intravenous drug abuser. The clinical findings often include a tender, pulsatile mass overlying an artery. The single best diagnostic test is the arteriogram. The treatment is based on early exploration with debridement of all necrotic and infected tissue, effective drainage, and appropriate antibiotic coverage.Restoration of vascular continuity is desirable when possible, and necessary when the viability of the extremity requires it. When reconstitution of the vessel is contemplated, the following principles are advocated (1) resection of all nonviable arterial wall, (2) use of monofilament synthetic suture, (3) achievement of a tension-free anastomosis with or without the use of autogenous grafts, (4) effective local drainage, and (5) appropriate antibiotic coverage. PMID- 3838559 TI - The trauma registry: a method for providing regional system audit using the microcomputer. AB - Medical accountability is an essential component of a system for trauma care. The microcomputerized regional trauma registry provides a simple method of providing accountability by integrating medical and system information to evaluate quality of care, adequacy of system criteria, and system compliance. The regional trauma registry is developed by identifying all patients who are suspected or known to have sustained a serious injury, whether or not they received trauma system care, and documenting their course from initial contact through final disposition. The microcomputer provides an inexpensive and readily available method for storing and evaluating the database. Information derived from the regional trauma registry is useful for profiling the nature and extent of trauma and for monitoring and modifying the system to improve patient access and medical care. PMID- 3838560 TI - Comparison of blood serum iodine levels with use of Iodoplex and povidone iodine ointment. AB - Concentrations of iodine were assayed in burn patients, who were covered with Iodoplex ointment up to 30% of their body surface. The iodine levels in the serum were found to be in linear proportion to the area treated with an increase of 30 micrograms iodine per 100 ml of serum for 1% of TBSA. The maximal levels were reached within 24 hours of applying the Iodoplex ointment and decreased quickly following its discontinuation. Concentrations of the iodine were much lower than those found after treatment with povidone iodine, a fact which indicates that using Iodoplex in second-degree burns and donor sites entails fewer possible complications due to high levels of iodine in the serum than with povidone iodine. PMID- 3838561 TI - [Pulmonary surfactant function and the prevention of pulmonary complications in acute surgical pathology complicated by peritonitis]. PMID- 3838563 TI - [Association of Hashimoto's thyroiditis and adult-type polymyositis]. PMID- 3838562 TI - [Use of thymalin for preventing postoperative suppurative and inflammatory complications]. PMID- 3838564 TI - [Transmission of hepatitis B]. PMID- 3838565 TI - Iowa cochlear implant clinical project: results with two single-channel cochlear implants and one multi-channel cochlear implant. AB - Cochlear implants have become a realistic alternative for the management of profoundly deaf patients. A variety of implants with differing electrode designs and coding strategies have been developed by nine major implant centers around the world. Each center has their "star" patient, but objective comparisons between these different implant designs are unavailable. In order to determine the performance characteristics of the present generation of cochlear implants, comparison data are vital. We have developed an independent center where uniform objective comparisons of different cochlear implants can be performed longitudinally. This report will present results of nine patients implanted with three different cochlear implant prostheses. Four patients have been implanted with the Los Angeles (House) single-channel implant, three patients have received the Vienna (Hochmair) single-channel intracochlear device, and two patients have been implanted with the Melbourne (Clark) 21-channel unit. All patients have had 11 months or more of experience with their cochlear prostheses. The results of a comprehensive audiologic battery which includes audiovisual and environmental tasks are presented. All implants provide significant improvement in speechreading and sound awareness. The findings to date suggest that there is strong correlation between top-down cognitive processing (as reflected by lip reading skills) and performance with cochlear implants. PMID- 3838566 TI - Hydrocortisone and 'macrocortin' inhibit the zymosan-induced release of lyso-PAF from rat peritoneal leucocytes. AB - Hydrocortisone and the glucocorticoid-induced anti-phospholipase protein macrocortin, were tested as inhibitors of PAF generation. The steroid produced a dose-dependent inhibition of the release of the PAF precursor 2-lyso-PAF, and this effect was mimicked by affinity-purified macrocortin. Neither agent had any effect on the acetylation of lyso-PAF to PAF. Of other drugs tested only phospholipase inhibitors blocked lyso-PAF release and sulphydryl reagents blocked the acetylation step. It is concluded that glucocorticoids inhibit the generation of PAF and this could be an important component of their anti-anaphylactic and anti-inflammatory action. PMID- 3838567 TI - Action of cobra venom phospholipase A2 on large unilamellar vesicles: comparison with small unilamellar vesicles and multibilayers. AB - Phospholipase A2 (Naja naja naja) catalyzes the hydrolysis of dipalmitoyl phosphatidylcholine in small unilamellar vesicles (SUVs) with a faster initial rate than in large unilamellar vesicles (LUVs) and multilamellar vesicles (MLVs). For the SUVs, the hydrolysis was initially faster for gel phase than liquid crystalline phase phospholipid. For both LUVs and MLVs, hydrolysis was low except in a small temperature range around the thermotropic phase transition of the phospholipid. In this temperature range, the reaction time course of phospholipase action on dipalmitoyl phosphatidylcholine in LUVs and MLVs included a lag period. With SUVs, a lag period also was observed above the phase transition temperature, but it was not observed below it. PMID- 3838568 TI - [Changes in the lungs in patients with lymphogranulomatosis, Stages I-II, following combination therapy]. AB - Early and late pulmonary changes in 140 patients with Hodgkin's disease, Stages I II, following combined treatment (polychemo- and radiotherapy) are analysed. Radiation pulmonitis and local paramediastinal fibrosis occur less frequently and they are less noticeable in combined therapy as compared to similar changes developing after radiation therapy only. It can be due to the fact that a course of polychemotherapy at its first stage results in a considerable decrease of the mediastinal lymph nodes (up to their complete regression) thus making it possible to shape irradiation fields of smaller sizes and to decrease the volume of pulmonary tissue to be irradiated. PMID- 3838569 TI - An interactive computerised protocol for the management of hypertension. PMID- 3838570 TI - A prostatic-like acid phosphatase is present in human lactating milk. AB - The presence of a prostatic-like acid phosphatase is reported in human lactating milk. Its activity is associated with skim milk and it could be separated from the other acid phosphatases only after Triton X-100 treatment. By all the criteria applied, it appears to be very similar to prostatic acid phosphatase. An approximate molecular weight of 96 000 was measured for the native enzyme, which is inhibited by L-(+)tartrate and has similar electrophoretic migration. Besides, it hydrolyzes choline-o-phosphate very well and cross-reacts with an antibody anti-prostatic acid phosphatase. This prostatic-like acid phosphatase has also been detected in a human mammary carcinoma from a lactating patient. PMID- 3838571 TI - [Conformation of dinucleoside phosphates: the conformation encoding hypothesis]. AB - The temperature dependence of the spin-lattice relaxation rate of nucleic bases protones and HI' of ApA, ApC, CpA and CpC (D2O, pH 7) were measured. The possible closed conformers of these dinucleoside phosphates (DNP) were computed by atom atom potential method. On the basis of conformational calculation and experimental data the composition of closed state was determined. Besides the right-handed "canonic" conformers, the "non-canonic" right- and left-handed conformers were shown to be present in the solution of all DNP studied. It is important to note that, "canonic" conformers of DNP studied being equally probable, the possibility of the realization of "non-canonic" conformers is determined by the nucleotide sequence. It may be expected that different nucleotide sequences have unique "non-canonic" conformations. That type of dependence of the spatial organization of polynucleotides on its nucleotide sequence we call "the conformational encoding". PMID- 3838572 TI - Identification and initial characterisation of a pyrimidine dimer UV endonuclease (UV endonuclease beta) from Deinococcus radiodurans; a DNA-repair enzyme that requires manganese ions. AB - An endonuclease that incises lightly ultraviolet-irradiated supercoiled plasmid DNA was identified in cell-free extracts of Deinococcus radiodurans R1 wild-type. The endonuclease was absent from strains mutant in the uvsC, uvsD or uvsE genes identifying it as 'UV endonuclease beta' responsible for the initial incision step of one excision-repair pathway for the removal of pyrimidine dimers from D. radiodurans DNA in vivo. The enzyme was purified free from contaminating nuclease activities and was partially characterised. The enzyme has an apparent molecular weight of 36 000, is ATP-independent, caffeine-insensitive and is inactivated by N-ethylmaleimide. It also has a novel requirement for manganese ions distinguishing it from all other known DNA-repair enzymes. PMID- 3838573 TI - Effect of amoscanate derivative CGP 8065 on aminoacyl-tRNA synthetases in Ascaris suum. AB - Evidence is provided for the occurrence of a multienzyme complex consisting of several aminoacyl-tRNA synthetases besides 'free enzymes' in Ascaris suum. The molecular mass of this complex was calculated to be about 10(6) daltons, compared to about 150 000 daltons for the seryl-tRNA synthetase. Leucyl-, isoleucyl-, arginyl- and lysyl-tRNA synthestases were found in the high molecular weight fraction. The Michaelis constants of these aminoacyl-tRNA synthetases were found to be in the range of 4 to 10 microM for amino acids and of 0.1 to 1.0 mM for ATP. Leucyl- and isoleucyl-tRNA synthetase interact with the amoscanate derivative CGP 8065. The inhibition constants were determined to be 34 microM and 8 microM, respectively. The type of inhibition was found to be competitive with respect to ATP. It is proposed that the interference of CGP 8065 with the charging of tRNA might be another target for the chemotherapeutic attack of this amoscanate derivative. PMID- 3838574 TI - The human T-cell receptor alpha-chain gene maps to chromosome 14. AB - The T-cell receptor for antigen has been identified as a disulphide-linked heterodimeric glycoprotein of relative molecular mass (Mr) 90,000 comprising an alpha- and a beta-chain. The availability of complementary DNA clones encoding mouse and human beta-chains has allowed a detailed characterization of the genomic organization of the beta-chain gene family and has revealed that functional beta-chain genes in T cells are generated from recombination events involving variable (V), diversity (D), joining (J) and constant (C) gene segments. Recently, cDNA clones encoding mouse and human alpha-chains have been described; the sequences of these clones have indicated that functional alpha chain genes are also generated from multiple gene segments. It is possible that chromosomal translocations involving T-cell receptor alpha- and beta-chain genes have a role in T-cell neoplasms in much the same way as translocations involving immunoglobulin genes are associated with oncogenic transformation in B cells. In the latter case, the chromosomal localization of the immunoglobulin genes provided one of the first indications of the involvement of such translocations in oncogenic transformation. The chromosomal assignment of the alpha- and beta chain genes may, therefore, provide equally important clues for T-cell neoplastic transformation. The chromosomal location of the mouse and human beta-chain gene family has been determined: the murine gene lies on chromosome 6 (refs 12, 13) whereas the human gene is located on chromosome 7 (refs 13, 14). Here we use a cDNA clone encoding the human alph-chain to map the corresponding gene to chromosome 14. PMID- 3838575 TI - Two types of neuronal muscarine receptors modulating acetylcholine release from guinea-pig myenteric plexus. AB - Longitudinal muscle strips of the guinea-pig ileum were incubated with [3H]choline and the effects of muscarinic agonists on smooth muscle contraction and on spontaneous and electrically-evoked outflow of tritium were studied. Muscarine and pilocarpine concentration-dependently increased both muscle contraction and spontaneous outflow of [3H]ACh, and inhibited the electrically evoked outflow of [3H]ACh. The increase in spontaneous outflow was prevented by tetrodotoxin and scopolamine, but not by hexamethonium. Oxotremorine (1-100 microM) did not increase the spontaneous outflow of tritium. Pirenzepine in concentrations of 10 and 100 nM hardly affected the muscle contractions induced by pilocarpine, but significantly antagonized the pilocarpine-evoked increases in [3H]ACh outflow. Likewise, pirenzepine (100 nM) antagonized more effectively the enhancement by muscarine of spontaneous outflow than the inhibitory effect of muscarine on the electrically-evoked release of [3H]ACh. Scopolamine (1 and 10 nM) antagonized to a similar extent the effects of pilocarpine on spontaneous outflow of [3H]ACh and on muscle contraction. The results suggest that the cholinergic nerves of the myenteric plexus are endowed with excitatory (ganglionic) and inhibitory (prejunctional) muscarine receptors which modulate the release of ACh and which differ in their affinities to pirenzepine. PMID- 3838576 TI - Neuropeptide Y (NPY) reduces field stimulation-evoked release of noradrenaline and enhances force of contraction in the rat portal vein. AB - The effect of neuropeptide Y (NPY) on fractional tritium-noradrenaline (3H-NA) release and contractile activity was studied in the isolated portal vein of SHR and WKY rats. NPY (5 X 10(-7) M) enhanced the force of the spontaneous contractile activity by about 40%. The fractional 3H-release elicited by transmural nerve stimulation (TNS), which mainly reflects 3H-NA, was reduced by about 40% after preincubation with 5 X 10(-7) M NPY in portal veins from both SHR and WKY rats. The inhibitory effect of NPY on TNS-evoked 3H-release was more slowly reversed by washout than the facilitatory action on spontaneous contractile force. The contractile response to field stimulation was not reduced by NPY, but rather tended to be increased. It is concluded that NPY exerts a dual action in the SHR and WKY portal vein, thus enhancing the smooth muscle contractions and inhibiting sympathetic neurotransmission. The inhibitory effect of NPY on TNS-evoked NA efflux, which is present in both SHR and WKY rats, is most likely due to a presynaptic site of action. PMID- 3838577 TI - [An unexpected severely allergic reaction to infant food in 2 children with known allergies to cow's milk and egg white]. PMID- 3838579 TI - Determination of amniotic fluid microviscosity at body temperature: a predictor of fetal lung maturity. AB - One of the most convenient ways to determine fetal lung maturity is by measuring the fluorescence polarization (P) of the amniotic fluid at room temperature. With sensitivity fixed on 100%, specificity is relatively unsatisfactory. The present study compared the predictive power of fluorescence polarization measured at temperatures 25C (P25), 37C (P37), and 40C (P40) among 195 consecutive samples tested at both 25C and 37C, with a subgroup of 86 samples tested also at 40C. A better separation between the results for fetuses with and without hyaline membrane disease is attained at P37, demonstrated by a greater mean standardized distance (distance between P values for those patients with and the mean P value for those patients without hyaline membrane disease in unit of standard deviation of the latter; 1.597 +/- 0.528 for P25 versus 2.332 +/- 0.591 for P37). Fixing the sensitivity at 100%, the specificity of P25 and P37, were 68.9 and 94.9%, respectively; a highly significant difference (P less than .001). The specificity of P40 was 90.5%, lower than that of P37. P37 is the best predictor and adding either P25 or P40 does not improve the prediction of lung maturity. It is concluded that P37 should replace P25 as the definite index for fetal lung maturity. PMID- 3838578 TI - Detection of the messenger RNAs coding for the opioid peptide precursors in pituitary and adrenal by "in situ' hybridization: study in several mammal species. AB - The messenger RNAs coding for opioid peptide precursors have been detected and mapped in histological sections by "in situ' hybridization using specific DNA probes labelled with 32P. Using bovine preproenkephalin A (PPA) cDNA, PPA mRNA was detected in adrenal medulla of bull, hamster and guinea pig. No signal was detected in adrenal of man, rat and cat. The pro-opiomelanocortin (POMC) mRNA was detected in pituitary of man, bull, cat, rat and pig, in all cells of the intermediate lobe as well as in scattered cells of the anterior lobe producing POMC. Adequate controls demonstrated the specificity of the labelling. These results provide evidence of the expression of the gene coding for PPA in the adrenal and for POMC in the pituitary. They show cross-hybridization of one DNA probe with mRNAs of various mammals and then provide evidence that one single probe can be used to analyze expression of a given gene in tissues of several animal species by "in situ' hybridization. PMID- 3838580 TI - The reproducibility of computerized boundary analysis for measuring optic disc pallor in the normal optic disc. AB - The optic discs of eight normal subjects were photographed on three separate visits under widely varying conditions. Each photograph was scanned by a television camera, converted to digital form, and then analyzed using computer image analysis techniques. The computer was programmed to delineate the boundary around the optic disc and the area of pallor. The percentage of disc pallor was then computed across the entire disc and for each disc quadrant. The reproducibility of the procedure was determined by evaluating several photographic parameters: camera flash intensity, film type, magnification, and centering of the disc in the photograph. The focus adjustment on the television scanner was also varied. Under carefully controlled conditions, results showed that the reproducibility of measuring the total percent of disc pallor was 2%. Results for reproducibility are also given for less than optimal conditions and for manual planimetry on the same set of photographs. PMID- 3838581 TI - Detection of increased pallor over time. Computerized image analysis in untreated ocular hypertension. AB - Computerized image analysis was used to measure changes in percent area of pallor of the optic disc in a retrospective study of a group of 16 normals and 39 untreated ocular hypertensives. The optic discs of the subjects were photographed on at least two visits at least one year apart (mean, 2 years). No significant changes in area of pallor for the normal group were observed between visits, except in the inferior quadrant of the left eye. The ocular hypertensive group showed a significant increase in area of pallor between visits for the total disc and for most quadrants of both eyes. Multiple regression analysis revealed that, in addition to ocular hypertension, the significant factors associated with a change in optic disc pallor were change of ocular pressure, standard deviation of the ocular pressures, presence of vascular hypertension, and standard deviation of vascular pulse pressures. Clinical implications of early detection of disc changes for follow-up and treatment of ocular hypertensives are discussed. PMID- 3838582 TI - Intrathecal morphine for intractable pain secondary to cancer of pelvic organs. AB - Sixty-two patients with intractable pain secondary to cancer of the pelvic organs were managed with intrathecal injections of morphine. Forty-six patients experienced pain relief from an initial test dose that ranged from 0.5 to 2.0 mg. In order to provide long-term pain relief, these 46 patients were further treated with repeated single injections (14 patients), external catheter (28 patients), or implanted pump (4 patients). Twenty-four of the 46 patients received pain relief without developing tolerance or side effects or experiencing mechanical failure of the application systems. When side effects developed, they were generally itching, sphincter disorder and somnolence. No serious respiratory depression was noted. Intrathecal morphine offers a hopeful alternative to systemic narcotics or ablative neurosurgical procedures in the management of terminal cancer pain. PMID- 3838584 TI - Neuropsychological sequelae of childhood cancer in long-term survivors. AB - In order to assess the effects of various cancer treatments on neuropsychological functioning, 74 long-term survivors of childhood cancer were examined. A comprehensive battery of tests was administered to two CNS treatment groups (irradiated and nonirradiated leukemia and lymphoma patients) and a control group (solid tumor and Hodgkin disease patients receiving no CNS treatment). The CNS irradiated group obtained lower scores than the other two groups, with significant differences in visual-motor and fine motor skills, spatial memory, and arithmetic achievement resulting in significant differences in IQ scores (VIQ, PIQ, FSIQ). The results are discussed in relation to: (1) the effects of CNS irradiation on cognitive development; (2) the specificity of these effects; and (3) the relationship of age at diagnosis to treatment effects. It is concluded that although there is a general lowering of scores after CNS irradiation, the effect is most pronounced for nonlanguage skills. Age at diagnosis was less important than the type of treatment, with CNS irradiation reducing performance regardless of when cancer was diagnosed. There were indications that children with any type of cancer diagnosed before age 5 years are more likely to have some cognitive difficulties. PMID- 3838583 TI - Composition and surface activity of normal and phosphatidylglycerol-deficient lung surfactant. AB - The possibility that pulmonary surfactant, characterized by a phosphatidylglycerol deficiency, as in early fetal life, might have inferior surface properties was evaluated. We obtained this specific surfactant from adult rabbits by withholding glucose and giving them an excess of myoinositol by mouth and intravenously. Controls were given a similar quantity of glucose. The myoinositol resulted in a drastic reduction of surfactant phosphatidylglycerol, from 7.2 to 0.3% of phospholipids, and a corresponding increase in phosphatidylinositol from 4.8 to 11.3%. In addition, the myoinositol treatment increased the myoinositol that was disaturated from 18.5 to 27.3% (p less than 0.05). The corresponding figures for disaturated phosphatidyl-choline were 56.0 and 60.5%, respectively (NS). The myoinositol treatment for 4 days increased the pool size of alveolar surfactant by 32% (p less than 0.01). The surface activity was studied with modified Wilhelmy balance and the pulsating bubble surfactometer. Surfactant containing phosphatidylinositol rather than phosphatidylglycerol was not inferior, as compared to surfactant that contained phosphatidylglycerol (minimum surface tension: 2.0 versus 2.2 mN X m-1; collapse rate at 10 nM X m-1: 1.85 versus 1.95 min-1; rate of adsorption from subphase to surface: 32 versus 35 mN X m-1 X 30 s-1), nor was there a difference in the ability of the two surfactants to improve lung stability of 27-day-old rabbit fetuses (air retention at 35 cm H2O: 1.8 versus 1.8 ml/30 g; air retention at 0 cm H20: 0.8 versus 0.9 ml/30 g). We conclude that phosphatidylinositol surfactant does not have inferior surface properties.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838585 TI - Phosphate fluxes in isolated enterocytes from vitamin D replete and vitamin D deficient rats--early effects of calcitriol. AB - In the present work we studied rapid in vitro effects of calcitriol (1,25(OH)2 vitamin D3) on the intestinal transport of inorganic phosphate (Pi). Enterocytes from vitamin D replete (D+) as well as vitamin D depleted (D-) rats were isolated mechanically from the duodeno-jejunum. In this model, Pi uptake was a temperature and Na+-dependent phenomenon. The in vitro-addition of calcitriol (1 pM) resulted in a significant enhancement of initial Pi uptake rate by enterocytes from D+ (P less than 0.01) and D- (P less than 0.05) rats. This effect which was Na+ dependent, was observed within the time of 20 min, but not before. A similar effect on Pi uptake rates of D+ or D- enterocytes could be elicited by the in vitro addition of the methyl ester of cis-vaccinic acid (MCVA) which is thought to increase membrane fluidity by modifying the lipid composition of the cell membrane. The stimulatory effect of calcitriol on Pi uptake rate was blunted in the presence of the methyl ester of transvaccinic acid (MTVA) thought to decrease membrane fluidity. Enterocyte Pi efflux rate constant (oKPi) remained unchanged in the presence of calcitriol (1 pM). In conclusion, the study demonstrates a rapid in vitro effect of calcitriol on Pi uptake by isolated enterocytes from D+ and D- rats. It suggests, but does not prove, that the hormone may act via an action independent of genomic nuclear activation. PMID- 3838587 TI - Evidence of place conditioning after chronic intrathecal morphine in rats. AB - The acute administration of either systemic or intrathecal morphine produced an antinociceptive reaction on the tail flick test; only systemic morphine produced a sedative effect on motor activity. Rats receiving chronic intrathecal injections were hyperactive relative to saline injected control subjects. After a series of four injections, a place preference was induced by both routes of administration: rats who had previously received morphine either by subcutaneous or intrathecal injection spent significantly more time in the context in which the drug had been given, relative to rats who were comparably injected with saline. These data suggest that chronic intrathecal morphine in rats may elicit a discriminable cue, either through direct pharmacological stimulation of supraspinal sites, or, indirectly, as a consequence of spinal opiate action. PMID- 3838586 TI - Hodgkin's disease in adults: the challenge. PMID- 3838588 TI - Does the aerobic xanthine oxidase reaction generate singlet oxygen? PMID- 3838589 TI - Orbital volume measurements in enophthalmos using three-dimensional CT imaging. AB - The purpose of this study was to investigate enophthalmos by measuring the volume of various orbital structures using off-line computer techniques on images generated by a CT scanner. Eleven patients with enophthalmos had CT scans of the orbits consisting of 30 to 40 adjacent 1.5-mm slices. The data from the scans were analyzed on a Nova 830 stand-alone computer system using software programs that allowed measurement of total bony orbital volume, total soft-tissue volume, globe volume, orbital fat volume, neuromuscular tissue volume, and apex-to-globe distance in the horizontal plane. These data were analyzed comparing the volumes in the normal eye with the volumes in the enophthalmic eye in each patient. The analysis demonstrated a statistically significant increase in bony orbital volume in the enophthalmic eye, but the total soft-tissue volume, fat volume, neuromuscular tissue volume, and globe volume were the same as in the normal eye. The apex-to-globe distance, a measure of the degree of enophthalmos, was less in the enophthalmic eye than in the normal eye. These results suggest that in the majority of patients, the cause of posttraumatic enophthalmos is increased bony orbital volume rather than by soft-tissue loss or fat necrosis. (Several patients showed no volume discrepancies, and it is likely that cicatricial contracture is responsible for the enophthalmos in these cases.) This study suggests that the objective of surgery for correction of enophthalmos in patients with a volume discrepancy should be to decrease the volume of the bony orbit and to increase the anterior projection of the globe. PMID- 3838591 TI - [Cochlear implants in the deaf: indications, methods, results]. PMID- 3838590 TI - An alternating chemotherapy and radiotherapy combination for non-Hodgkin's lymphomas of unfavourable histologies: feasibility and preliminary results. AB - In 1980, on the basis of fundamental and clinical data, a protocol was developed at the Institut Gustave-Roussy, alternating eight monthly courses of chemotherapy (CHVP) and two or three radiotherapy sequences (15 Gy in 6 fractions of 10 days, each), to treat non-Hodgkin's lymphomas of unfavourable histologies, mainly stage II, presenting bulky tumours. Systemic, haematological and digestive tolerances were satisfactory. For 19 previously untreated stage II patients, overall survival and relapse-free survival after 30 months were 85 and 65%, respectively. Three of the relapses were observed in patients who did not receive the alternating schedule in an optimal way; this suggests that these results can be further improved. PMID- 3838592 TI - [Artificial milk]. PMID- 3838593 TI - Redesigning trypsin: alteration of substrate specificity. AB - A general method for modifying eukaryotic genes by site-specific mutagenesis and subsequent expression in mammalian cells was developed to study the relation between structure and function of the proteolytic enzyme trypsin. Glycine residues at positions 216 and 226 in the binding cavity of trypsin were replaced by alanine residues, resulting in three trypsin mutants. Computer graphic analysis suggested that these substitutions would differentially affect arginine and lysine substrate binding of the enzyme. Although the mutant enzymes were reduced in catalytic rate, they showed enhanced substrate specificity relative to the native enzyme. This increased specificity was achieved by the unexpected differential effects on the catalytic activity toward arginine and lysine substrates. Mutants containing alanine at position 226 exhibited an altered conformation that may be converted to a trypsin-like structure upon binding of a substrate analog. PMID- 3838594 TI - Computer-assisted analysis in organic synthesis. AB - The planning of alternative routes for the synthesis of complex organic molecules has been facilitated by the formulation of guiding strategies that can be applied to a broad range of problems. Analysis of organic synthesis can be carried out in the retrosynthetic direction, opposite to the actual process of chemical synthesis, or bidirectionally, that is, as a combined retrosynthetic and synthetic search. An interactive computer program is described which utilizes the general strategies of retrosynthetic analysis and an appropriate database to generate pathways of chemical intermediates for chemical synthesis of a particular target structure. Computer graphics and standard chemical structures are used for man-machine communication. PMID- 3838596 TI - Severe angina and a systolic murmur. PMID- 3838597 TI - Recurrence of duodenal ulceration in patients on maintenance sucralfate. A 12 month follow-up study. AB - A single-blind, 1-year follow-up study of 70 patients with recently healed duodenal ulcers was undertaken to assess the value of sucralfate (Ulsanic; Continental Ethicals) in preventing recurrence and to establish the lowest dose required to achieve this. Endoscopy was repeated on clinical relapse and routinely at 6 and 12 months. Fifty of the 70 patients were followed up for 12 months or to recurrence proved on endoscopy; the remaining 20 patients were excluded from analysis because of default or protocol violation. Endoscopic evidence of recurrence was found in 6 of 19 patients (32%) given sucralfate 1 g twice a day (group B), in 7 of 15 (47%) on sucralfate 1 g at night (group A), and in 13 of 16 controls (81%). The recurrence rates in groups A and B were significantly lower than in the control group (P less than 0,05 and P less than 0,005 respectively), and there was a significant gradient between the number of patients in remission at 12 months and the amount of medication (P less than 0,05). PMID- 3838595 TI - Insertion mutagenesis of embryonal carcinoma cells by retroviruses. AB - Mutagenesis was studied in cultured F9 embryonal carcinoma cells infected with a variant of Moloney murine leukemia virus. Proviral insertion induced the inactivation of the hypoxanthine phosphoribosyltransferase locus, and the virus was used to isolate the mutated genes rapidly. Mutagenesis by these methods may be useful for the genetic dissection of the various mammalian cell phenotypes. PMID- 3838598 TI - OKT4 positive Hodgkin's disease. PMID- 3838599 TI - Equitable evaluation in the teaching of integrated clinical medicine. AB - When clinical medicine is offered as an integrated subject for undergraduate students it poses a problem when it comes to evaluation. Departmental heads become concerned about students' tendency to neglect or even disregard 'minor' subjects because of their small contribution to the composite evaluation mark. A method for allocating weights to various subjects was devised and a computer programme for random allocation of the percentage content of major and minor subjects established. As experience over the past 5 years has shown, the system has been found acceptable by both teachers and students. PMID- 3838600 TI - Histologic study of normal rat brain tissue after neodymium-yttrium aluminum garnet laser irradiation. I. Cerebral hemisphere. AB - We report a histologic study of normal rat brain tissue after neodymium-yttrium aluminum garnet laser irradiation. Morphological changes occurred at a maximum depth of 5 mm after 60-W, 1-second exposure, at a 2-mm distance between the optical fiber tip and the brain surface. Polymorphonuclear leukocyte infiltration into the irradiated area was observed 48 hours after irradiation. After 72 hours, macrophages and fibroblasts appeared; their number increased thereafter. At 1 month, tissue defects attributable to neodymium-yttrium aluminum garnet laser irradiation were small. Gliotic changes were rarely seen. We conclude that 60-W irradiation is harmful to young rats but not to adult rats. PMID- 3838601 TI - Lack of synergism between dazoxiben and dipyridamole following administration to man. PMID- 3838602 TI - Histidine-rich glycoprotein inhibits the antithrombin activity of heparin cofactor II in the presence of heparin or dermatan sulfate. PMID- 3838603 TI - Long term study of the effect of rifampicin and isoniazid on vitamin D metabolism. AB - Eight patients with tuberculosis were studied before, during and after 9 months treatment with rifampicin and isoniazid to assess the overall effect on vitamin D metabolism. No significant uniform change in either 1,25(OH)2D or 25 OH D nor in any of the other biochemistry measured occurred during the study. It seems unlikely that the combined effects of these drugs causes clinically significant derangement of vitamin D metabolism in patients treated over a 9 month period for tuberculosis. PMID- 3838604 TI - Cardiac function evaluation in AMSA-treated patients. AB - Cardiac function was monitored by means of ECG and systolic time intervals in 13 patients submitted to treatment with 4'-(9-acridinylamino) methanesulfon-m aniside (AMSA) without the classical reconstitution vehicle N1N dimethylacetamide. ECG changes were represented by flattening of T waves (100%), sporadic atrial extrasystoles (23%), and sporadic or coupled ventricular premature beats (7.6%). These alterations were transient and not dose related. The systolic time interval ratio, recorded at the end of infusion and 2 h after drug administration, did not change significantly from pretreatment values. Systolic time intervals recorded in 6 patients after the mean cumulative dose of 550 mg/m2, and in 3 patients after the mean cumulative dose of 1000 mg/m2, did not change from mean basal values. Present data failed to confirm the occurrence of a significantly cardiotoxic activity of AMSA. PMID- 3838605 TI - Bladder irritative symptoms in an elderly woman. PMID- 3838607 TI - [Micromanipulatory sperm injection--a new method in the treatment of infertile males]. AB - Three couples were selected for this preliminary sperm injection study with their consent, since in all three cases the zona free hamster egg penetration test was negative and in one couple previous attempts of in vitro fertilization were unsuccessful. Of 22 eggs, recovered from three patients, 9 from each patient 3 were injected with sperm, while the others were inseminated by the standard IVF protocol. Before manipulating human eggs extended experiments were performed with animals eggs, so decreasing the rate of damage to under 10%. Additionally we optimized the method by using an individual adapted equipment. Manipulation was performed by penetration of the zona pellucida with a 5 to 7 mu thick injection pipet into the perivitilline space so damaging of the egg cytoplasm was avoided. This special technique for sperm injection was not used till now in this indication. From the nine eggs used in this experiment one egg developed a pronucleus and one egg developed to a four-cell stage. We could not achieve a pregnancy. PMID- 3838606 TI - [Results of a pilot study of hyaluronidase as an adjunct to cytostatic therapy in malignant diseases]. AB - 46 patients (17 myelomas, 11 malignant lymphomas, 8 mammary carcinomas, 7 head and neck carcinomas, 2 gastrointestinal carcinomas and 1 ovarian carcinoma) were treated with Permease prepared of bovine testes by Sanabo. 7500 i.u. were given either intramuscular one hour before cytostatic chemotherapy or intraperitoneally with cytostatic agents. There were 2 cases of local irritation on the site of injection and 1 case of reversible anaphylactoid reaction. Results achieved in patients treated with the same chemotherapy in spite of resistance, but with addition of Permease: myeloma CR 2/9, subjective improvement 7/9; 5 patients expired, median observation time: 13 months; non-Hodgkin-lymphomas CR 2/5, PR 2/5; 2 patients expired, median observation time: 9 months; breast cancer PR 2/4, 2 patients expired, median observation time: 5 months, 1 patient with Morbus Hodgkin CR, expired after 24 months. The other patients who received systemic treatment had either primary chemotherapy with addition of Permease, or chemotherapy was altered because of resistance against the prior therapy before Permease was applied. Intraperitoneal application of Permease together with cytostatic agents, usually not used for local therapy because of high rate of irritation like cis-platin, was well tolerated. Complete regression of ascites was achieved in all cases. In 1 of the 4 patients duration of remission was 7 months. Hypotheses concerning the mechanism of action of hyaluronidase in malignant diseases are discussed. The effectiveness of Permease might be related to resistance phenomenon of tumor cells or to alteration of pharmacokinetics of cytostatic agents. PMID- 3838608 TI - Indication for operation of patients with autonomously functioning thyroid tissue in endemic goiter areas. PMID- 3838610 TI - Lesions in the liver and kidney of Dirofilaria immitis-infected dogs following treatment with ivermectin. AB - Six dogs with spontaneous heartworm disease were injected with a single dose of ivermectin. After 48 h of treatment, microfilariae counts were reduced by 92%-98% of pretreatment counts. In pretreatment biopsies examined by light and electron microscopy, microfilariae were unaltered in the sinusoids of the liver and also in the glomerular capillaries and interstitial blood vessels of the kidney. However, there was irregular thickening and dense deposits in the basement membranes of glomerular capillaries, along with a modest increase in mesangial cells and matrix. In post-treatment liver biopsies examined by light microscopy, there were numerous granulomas in the sinusoids which contained degenerated microfilariae. In post-treatment kidney biopsies there was moderate thickening of glomerular basement membranes along with pronounced proliferation of mesangial cells and matrix. Glomerular capillaries were partially or completely occluded by degenerated microfilariae. In addition, there were interstitial granulomas in the kidney. It was observed with the aid of electron microscopy that highly vacuolated and degenerated microfilariae were incorporated into granulomas in the liver sinusoids of post-treatment biopsies. In post-treatment kidney biopsies glomerular capillaries were usually occluded by degenerated microfilariae. Basement membranes were thickened and contained dense deposits. Mesangial cells and matrix were extensively increased. Interstitial granulomas in the kidney contained dead microfilariae. PMID- 3838611 TI - Diagnosis and management of the less common venereal diseases. PMID- 3838609 TI - New applications of total parathyroidectomy and autotransplantation: use in proximal renal tubular dysfunction. PMID- 3838612 TI - [Meniscectomy in children]. PMID- 3838613 TI - The feeling of knowing for different types of retrieval failure. PMID- 3838614 TI - Spontaneous osteonecrosis of the knee. AB - Spontaneous osteonecrosis is a common cause of knee pain in older patients, but the diagnosis is often overlooked. Sudden knee pain in older women, with marked joint line tenderness and a decreased range of motion, should alert the physician to the diagnosis. Two to three weeks after the onset of symptoms, plain radiographs will usually be normal but bone scan will be markedly positive. Treatment is initially conservative. Surgical intervention (either osteotomy or arthroplasty) is reserved for patients who develop a large radiolucent lesion in the subchondral femoral condyle. PMID- 3838615 TI - Interpretation of excessive serum concentrations of digoxin in children. AB - Between January 1981 and April 1984, excessive serum concentrations of digoxin (5 ng/ml or higher) were recorded in 47 children, aged 2 days to 16 years. In 10 patients, the high concentrations were measured 9.25 to 48 hours after death and were significantly higher than antemortem levels in all cases (8.3 +/- 2.4 (+/- standard deviation) postmortem vs 3.3 +/- 1.5 antemortem, less than 0.0001). In 15 patients (40.5% of the living patients) serum concentrations of 5 ng/ml or higher reflected sampling errors; drug levels were monitored too closely to the administration of a dose. None of these children had toxic manifestations of digoxin. In 10 patients, the excessive concentrations were associated with renal failure and a prolonged elimination half-life (T1/2) of digoxin; in 3 of these patients, there were signs of digoxin toxicity. Six cases were caused by digoxin overdose (accidental ingestions, pharmacy error and a suicide attempt). In 6 additional cases, the existence of an endogenous digoxin-like substance (EDLS) was shown to contribute to the excessive levels of the drug. One case could be attributed to digoxin-amiodarone interaction. In 10 of 37 living patients, digoxin toxicity was diagnosed. After excluding the 15 sampling errors and 6 cases with EDLS, this represents 63% of the cases. There was a good correlation between digoxin elimination T1/2 and serum creatine concentrations (r = 0.71, p less than 0.01). The above observations suggest that excessive serum concentrations of digoxin may not necessarily reflect potentially toxic levels.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838616 TI - Microcomputer interpretation of red blood cell panels. AB - The interpretation of red blood cell panels and identification of alloantibodies can be a difficult and time-consuming task. PANEL-IZER, a computer program that performs this interpretation, is described. The panel analysis is based on a matrix algebra algorithm that is presented in detail. Conditional probability logic supplements the analysis by searching for unexpected reactive cells or other possibilities such as the presence of autoantibodies or antibodies to low- or high-frequency antigens. The program considers phases of reactivity, dosage effects, and reaction strengths to aid in antibody identification. Probability levels for antibody identification based on Fisher's "exact" method are calculated. The program also can help suggest a "select cell" panel. This program can be a valuable tool in blood banks to aid in the interpretation of panels, to check technologists' interpretations, to generate "select cell" panels, and to help teach students and residents antibody identification. PMID- 3838617 TI - Calculator programs for weighted least-squares iterative fits in pharmacokinetics. PMID- 3838619 TI - Laboratory and clinical evaluation of a rapid slide agglutination test for phosphatidylglycerol. AB - Amniostat-FLM is a recently developed rapid slide agglutination test for amniotic fluid phosphatidylglycerol. We compared phosphatidylglycerol quantitated by two dimensional thin-layer chromatography with phosphatidylglycerol determined by Amniostat-FLM in 180 amniotic fluid samples. If any level of phosphatidylglycerol by thin-layer chromatography, including a trace, was considered positive, then phosphatidylglycerol by thin-layer chromatography and Amniostat-FLM were concordant in 171 of 180 samples (95%). Both were positive in 123 and both negative in 48 samples. The nine amniotic fluid samples with discrepant results were as follows: Five negative Amniostat-FLM results were associated with trace phosphatidylglycerol by thin-layer chromatography (1% to 2% of total phospholipids), one negative Amniostat-FLM result was associated with 3% phosphatidylglycerol by thin-layer chromatography, and three positive Amniostat FLM results were associated with negative phosphatidylglycerol by thin-layer chromatography results. There were 14 samples with trace phosphatidylglycerol by thin-layer chromatography; of these, there were nine positive and five negative Amniostat-FLM results. If greater than 2% phosphatidylglycerol by thin-layer chromatography was considered positive, concordance between the two tests was 93% (167 of 180). From these samples, 119 infants were delivered within 72 hours of amniocentesis. There were 100 positive Amniostat-FLM results and all were associated with the absence of respiratory distress syndrome; of the 19 negative Amniostat-FLM results, five were associated with infants who developed respiratory distress syndrome. The present study confirms that Amniostat-FLM is a simple, rapid, and accurate test for determining the presence of phosphatidylglycerol in amniotic fluid. PMID- 3838618 TI - Prospective evaluation of cardiotoxicity during a six-hour doxorubicin infusion regimen in women with adenocarcinoma of the breast. AB - In order to test the possible cardiac-sparing effect of doxorubicin administered by six-hour intravenous infusion and to prospectively evaluate the role of resting left ventricular ejection fraction in monitoring these patients, 33 women with advanced breast cancer were treated with combination chemotherapy containing 5-fluorouracil, cyclophosphamide, and doxorubicin. Doxorubicin was administered via a femoral catheter as a six-hour infusion. Cardiac function was monitored prior to therapy and at intervals during therapy by history and physical examination and by measurement of resting left ventricular ejection fraction with gated pool radionuclide angiography. Twenty-six responses were observed (complete response, seven [21 percent]; partial response, 19 [57 percent]). Systemic toxicity included alopecia, myelosuppression, and nausea and vomiting. There was a progressive fall in resting left ventricular ejection fraction during treatment from a median baseline value of 0.63. Mean fall from baseline left ventricular ejection fraction at a cumulative doxorubicin dose of 200 to 300 mg/m2 was 0.06 (p less than 0.005); at 301 to 449 mg/m2 it was 0.09 (p less than 0.0005); and at 450 mg/m2 or greater it was 0.15 (p less than 0.0005). Clinical congestive heart failure developed in three patients. Even though the decrease in left ventricular ejection fraction was often within the "normal range" (left ventricular ejection fraction 0.50 or greater), these changes were progressive and appeared to be part of a continuum of doxorubicin-induced myocardial damage. Steady-state infusion levels of doxorubicin in plasma ranged from 90 to 120 nM. They confirm the hypothesis that lower concentrations can be achieved by continuous infusion rather than by bolus infusion. In this study, however, administration of doxorubicin by six-hour infusion did not appear to have a major cardiac-sparing effect. Studies of anthracycline cardiac toxicity should include determination of baseline left ventricular ejection fraction and serial observations during therapy. Failure to include deteriorations in function above an arbitrary cutoff point or to make observations only at higher cumulative doses may underestimate drug-induced myocardial damage. PMID- 3838620 TI - A simple database computer program for ophthalmic use. AB - We have written a program in BASIC language which stores, recalls, and manipulates a limited amount of clinical information that we use in teaching and clinical practice. The program runs on an IBM personal computer with Microsoft DOS and BASIC. An illustrative search routine uses simple data simulation of the results of argon laser trabeculoplasty therapy for open-angle glaucoma. PMID- 3838621 TI - Nd:YAG laser posterior capsulotomy: a clinical study. AB - As a postoperative complication to cataract surgery [extracapsular extraction (ECCE), phacoemulsification (KPE)], the posterior capsule (PC) of the lens often becomes opacified with plaque, Elschnig's pearls, or fibrotic bands, resulting in decreased visual acuity (VA). A Q-switched Nd:YAG ophthalmic laser was used to perform noninvasive micropuncturing of the posterior capsule. Two hundred thirteen patients (195 with existing intraocular lenses) underwent laser capsulotomy within a 14-month clinical study. These patients were followed over a 6-month postcapsulotomy period. Findings indicate excellent restored VA with minimal ocular complications. PMID- 3838622 TI - Cochlear implants: 1981 to 1985. PMID- 3838623 TI - Coronary and systemic 6-ketoprostaglandin F1 alpha and thromboxane B2 during myocardial ischemia in dog. AB - The left anterior descending coronary artery (LAD) of five dogs was ligated, and blood was withdrawn from the great cardiac vein, left marginal cardiac vein, femoral vein, and aorta. After ligation, immunoreactive 6-ketoprostaglandin (PG) F1 alpha rose from less than 0.1 to a mean value of 1.2 pmol/ml plasma in the great cardiac vein (GCV) and 0.88 pmol/ml in the left marginal vein, with no change in peripheral circulation. Immunoreactive thromboxane (TX) B2 remained below 0.075 pmol/ml throughout the experiments. LAD of 11 dogs was stenosed 60 80% with consequent cyclical reductions in blood flow. 6-Keto-PGF1 alpha in GCV rose in seven dogs (range 0.5-2.2 pmol/ml) and remained unchanged in four. No change was observed in peripheral plasma levels of 6-keto-PGF1 alpha. In these experimental conditions TXB2 remained below 0.075 pmol/ml. Lactate concentrations rose in both experimental conditions in GCV but not in peripheral circulation or in the left marginal vein. This study confirms a link between cardiac ischemia and increased coronary prostacyclin release, but we were unable to detect a similar correlation with TXB2 in plasma. PMID- 3838624 TI - Sexually transmitted diseases and reproductive microbiology: a natural alliance. PMID- 3838625 TI - Muscle rehabilitation after arthroscopic meniscectomy with or without tourniquet control. A preliminary randomized study. AB - Nineteen patients with isolated meniscus lesions were randomly assigned to operation with or without tourniquet. All patients underwent arthroscopic meniscectomy. Measurements of CK (creatinin-kinase), CK-B (isoenzymes MB of creatinin-kinase), LD (lactate dehydrogenase), ASAT (aspartate aminotransferase), and ALAT (alanine aminotransferase) were performed preoperatively and postoperatively over 6 days. The muscle torque was measured on a Cybex II isokinetic dynamometer preoperatively, 1 week and 4 weeks postoperatively. The mean CK level rose significantly in both groups, but did not pass the upper normal serum level. There was no effect on the other muscle enzymes. Quadriceps torque was significantly lowered in both groups 1 week after operation. Four weeks postoperatively, it was still lowered in the nontourniquet group, which also had a slower increase in torque between weeks 1 and 4 than the tourniquet groups. There was no effect from the operation on isometric or hamstrings torque. The slight rise in CK was similar to that seen after hard physical exercise. The decrease in muscle torque was, therefore, mostly due to pain inhibition. The slightly slower rehabilitation in the nontourniquet group may be caused by the technique of raising saline flow and pressure during the arthroscopy to control bleeding. This causes extravasation of fluid which may increase postoperative pain and stiffness. PMID- 3838626 TI - Soluble chromogenic substrates for the assay of endo-1,4-beta-xylanases and endo 1,4-beta-glucanases. AB - New soluble chromogenic substrates were prepared for specific and rapid assays of endo-1,4-beta-xylanases and endo-1,4-beta-glucanases. A soluble beechwood 4-O methyl-D-glucurono-D-xylan was dyed with Remazol brilliant blue R, and hydroxyethylcellulose was coupled to Ostazin brilliant red H-3B. The assays are based on photometric measurements of the enzyme-released dyed fragments soluble in the presence of organic solvents which precipitate the original substrates and their high-molecular-weight fractions. The assays are advantageous for rapid analyses of large amount of samples and also permit evaluation of the activities of both enzymes in the presence of exo-beta-glycanases and beta-glycosidases, at a high level of reducing compounds and viable cells, on the cell surface and on cell membranes and organelles. PMID- 3838627 TI - Sensitive detection of endo-1,4-beta-glucanases and endo-1,4-beta-xylanases in gels. AB - A simple, highly sensitive zymogram technique for detection of endo-1,4-beta glucanases and endo-1,4-beta-xylanases in polyacrylamide gels after electrophoresis or isoelectric focusing was developed. The detection employs transparent agar replicas containing soluble covalently dyed polysaccharides, hydroxyethylcellulose dyed with Ostazin brilliant red H-3B and beechwood 4-O methyl-D-glucurono-D-xylan dyed with Remazol brilliant blue R, as the respective substrates. The high sensitivity of the detection is achieved by selective removal of depolymerized dyed substrates from the agar replicas by solvents which neither solubilize nor precipitate the original nondegraded dyed polysaccharides present in the agar gel. PMID- 3838628 TI - Flow-injection analysis of catecholamine secretion from bovine adrenal medulla cells on microbeads. AB - Bovine adrenal medullary cells have been cultured on microbeads which are placed in a low-volume flow system for measurements of stimulation-response parameters. Electronically controlled stream switching allows stimulation of cells with pulse lengths from 1 s to many minutes; pulses may be repeated indefinitely. Catecholamines secreted are detected by an electrochemical detector downstream from the cells. This flow-injection analysis technique provides a new level of sensitivity and precision for measurement of kinetic parameters of secretion. A manual injection valve allows stimulation by higher levels of stimulant in the presence of constant low levels of stimulant. Such experiments show interesting differences between the effects of K+ and acetylcholine on cells partially desensitized to acetylcholine. PMID- 3838630 TI - A comprehensive computer system for anesthetic record retrieval. AB - We have developed computer software to store data on all surgical and obstetrical anesthetics administered by our department. The computer system provides information for monitoring the residency training program, department and operating room management, professional fee billing, and research. It imposes little additional workload on our clinical personnel, who use simple codes to record the necessary data directly on the anesthetic record. Department secretarial staff transcribe data from the anesthesia and operating room records into the computer file, which is then available for producing scheduled reports and for answering inquiries from a video terminal. The system employs extensive manual and computer verification to minimize errors and omissions in the data. We report design details and more than 3.5 years experience with this system, which is now used at four affiliated teaching hospitals, has over 50,000 cases on file, and adds more than 1800 cases monthly. PMID- 3838629 TI - The development of commissural connections of somatic motor-sensory areas of neocortex in the North American opossum. AB - The North American opossum does not have a corpus callosum; neocortical commissural axons are contained entirely within the anterior commissure. We have used axonal transport techniques to study the origin and distribution of commissural axons from somatic motor-sensory cortex in developing and adult opossums. Neocortical axons grow into the anterior commissure by postnatal day (PND) 12, the contralateral external capsule by approximately PND 19, the area deep to the contralateral homotypic cortex by approximately PND 26 and the cortex proper by approximately PND 35. Commissural neurons were first demonstrated at about PND 26, when they form a fairly continuous band in the cortical subplate (presumptive layers V-VI). By at least PND 37, commissural neurons are also present in layers II and III, where they form a continuous band, and in layer IV, where they are sparse. In older pouch young and adult opossums the bands of commissural neurons, especially in layers V-VI, are interrupted, and commissural neurons are rare in layer IV. In general, commissural axons in both pouch-young and adult opossums innervate areas containing commissural neurons as well as layer I. In the acallosal opossum as well as in the callosal rat, the development of commissural connections from somatic motor-sensory cortex is characterized by pauses during the growth of axons into the opposite cortex, by a general inside out-gradient, and by a transition from continuous bands to patchy, radial columns of commissural neurons and axons. This suggests that similar mechanisms govern the formation of commissural connections in the two species. PMID- 3838631 TI - An apparent seizure following inadvertent intrathecal morphine. PMID- 3838632 TI - [Bacterial meningitis and intrathecal treatment of chronic pain]. AB - A case is reported of bacterial meningitis related to an intradural implant used in the treatment of pain into which morphine was administered daily. The infection began on the third day after implantation of the system. Because of its efficiency in controlling pain, it was not removed; the infection was successfully treated with local and general antibiotic treatments only. The system was used 121 days. PMID- 3838634 TI - Maxzide or Dyazide: a cautionary note. PMID- 3838633 TI - [Status asthmaticus, adult respiratory distress syndrome and pulmonary vascular thrombosis]. PMID- 3838635 TI - The estimation of serum fructosamine: an alternative measurement to glycated haemoglobin. AB - A method is presented for the estimation of fructosamine using a Cobas Bio centrifugal analyser. The effect of three different preparations of human serum albumin used for construction of calibration curves of 1-deoxy-1 morpholinofructose is described. The selection of serum albumin and the concentration used in the standard solutions is critical since the dose-response curve is affected differently and will therefore influence the estimated values. Normal ranges were obtained for non-diabetic subjects with normal protein status and for a group of females with reduced albumin levels due to pregnancy or oestrogen therapy. There was no significant difference between fructosamine levels in these populations. Fructosamine was also estimated in 250 patients attending a diabetic out-patient department and this correlated well with haemoglobin A1 estimated simultaneously. The method is rapid, technically simple and inexpensive and may prove to be a useful and reliable alternative to HbA1 estimation. PMID- 3838636 TI - Treponemycin, a nitrile antibiotic active against Treponema hyodysenteriae. AB - Two strains of Streptomyces sp. (isolates 275 and 124) were isolated from soil samples collected from the fields around Lewiston, Idaho. Based on their cellular morphology and physiology, the two isolates were identified as Streptomyces albovinaceous. Both isolates produced an antibiotic when grown in liquid culture medium containing homogenized oats. The antibiotic (treponemycin) was isolated from the culture broth by solvent extraction and purified by silica gel column and preparative thin-layer chromatographies. Treponemycin is a crystalline light yellow compound with an mp of 93 to 95 degrees C, levorotatory, and soluble in most organic solvents. It is sparingly soluble in water but insoluble in petroleum ether. On the basis of elemental analysis and mass spectral data, the molecular formula of the antibiotic was deduced to be C28H43O6N. The infrared spectrum of the antibiotic indicated the presence of unsaturation, nitrile, lactone, or ester or all three functions, and carbonyl functions in the molecule. A sharp infrared absorption band for nitrile at 2,220 cm-1 and the presence of an unsaturated group indicated that the nitrile function may be attached to an unsaturated carbon atom. The presence of dienenitrile functions was further supported by the UV absorption spectrum of the antibiotic, which gave a UVmax at 257 nm. The proton magnetic resonance spectrum of the antibiotic did not give any peak which could be exchanged with deuterated water, which is an indication of the absence of carboxylic and hydroxyl functions in the molecule. All of the functional groupings indicated by the infrared and UV spectra of the molecule were further confirmed by the 13C-magnetic resonance spectrum of the compound. A brief hydrogenation of the antibiotic yielded a biologically active tetrahydro derivative, whereas extended hydrogenation produced an inactive primary amine. Mild alkaline hydrolysis and subsequent esterification of the antibiotic with diazomethane produced an inactive dimethyl ester. Apparently both the nitrile and the lactone functions are essential for the treponomycin molecule to show antimicrobial activity. The antibiotic showed inhibitory activity against several species of bacteria, especially Treponema hyodysenteriae, the causative agent of swine dysentery. In view of the oral 50% lethal dose of 400 mg/g and its low MIC against four stains of T.hyodysenteriae, the antibiotic may have value as a swine dysentery therapeutic. PMID- 3838637 TI - In vitro studies of BMY-28142, a new broad-spectrum cephalosporin. AB - BMY-28142 was compared with other broad-spectrum antibiotics against gram positive cocci and gram-negative bacilli. BMY-28142 was highly active against all gram-negative bacilli and especially against Enterobacter cloacae, Serratia marcescens, and Morganella morganii. Its in vitro activity suggests that BMY 28142 should prove to be useful for the treatment of gram-negative bacillary infections. PMID- 3838638 TI - The chemotherapy of onchocerciasis X. An assessment of four single dose treatment regimes of MK-933 (ivermectin) in human onchocerciasis. AB - Nineteen patients from an area of vector control in the savanna region of Northern Ghana, all with moderate to heavy infections with Onchocerca volvulus and some with ocular involvement, were treated with 50, 100, 150 or 200 micrograms kg-1 of ivermectin. Detailed monitoring of clinical and ocular reactions and of alterations in skin microfilarial counts and laboratory indices were carried out during the first 28 days. Microfilarial counts in skin snips and detailed ocular examinations were then repeated at intervals over a period of nine months. Ivermectin slowly eliminated microfilariae from the skin and eye without serious adverse clinical or ocular reactions in all treated groups. There was little difference in efficacy between doses of 100, 150 and 200 micrograms kg 1, and these were more effective than the 50 micrograms kg-1 dose. Very low levels of skin microfilariae were maintained for nine months. Microfilariae were not eliminated from the eye for at least three months. The drug was neither macrofilaricidal nor embryotoxic. However, it produced a dose-dependent stimulation of embryogenesis manifest at one month and succeeded by a suppression of embryogenesis at three months after therapy. In areas where transmission of onchocerciasis has been interrupted, ivermectin may need not be given more often than once a year. The efficacy of the drug on single dosage and the mild adverse reactions produced, if confirmed in subsequent controlled studies, would greatly simplify the treatment of onchocerciasis and would reintroduce new concepts of the role of chemotherapy in the control of onchocerciasis. PMID- 3838639 TI - Hepatitis B: sexual contacts. PMID- 3838640 TI - The autopsy revisited. PMID- 3838641 TI - Blood-group antigen expression in renal pelvic and ureteral tumors. PMID- 3838642 TI - Quality control log with CUSUM and clinically useful limits criteria. AB - We describe a quality control (QC) log including its advantages over the more commonly used Levey-Jennings and Shewart graphic charts. It represents a practical system of analytic quality control for quantitative assays in clinical chemistry. It utilizes cumulative sum (CUSUM) techniques and comparison of means to monitor acute and chronic analytic drift, respectively. Clinically useful limits (CUL) criteria for QC decisions are used. An algorithm to facilitate the description of, training for, and use of, the QC log system is provided. PMID- 3838643 TI - Some long-term effects of exchange transfusion with fluorocarbon emulsions in macaque monkeys. AB - Fluorocarbon emulsions were used as blood substitutes in exchange transfusions of seven macaque monkeys. Some monkeys were tested for electrophoretic abnormalities of serum proteins prior to and at the time of death. At the time of killing 2 1/2 to eight years after transfusion, autopsies were performed on all seven monkeys. Monkeys receiving emulsions of FC-47 (perfluorotributylamine) displayed vacuolated cells representing fluorocarbon throughout the reticuloendothelial system even six years later. Monkeys examined eight years after receiving emulsions of PP-5 (perfluorodecalin) failed to display such changes. However, electrophoresis revealed abnormalities in the blood of all four monkeys in which the test was performed, irrespective of whether FC-47 or PP-5 was given. The electrophoretic abnormality consisted of a polyclonal increase of immunoglobulins, some of which migrated in the beta region. These data suggest that fluorocarbon emulsions that have recently been given to humans may produce a chronic stimulation of the reticuloendothelial system leading to alterations in production of immunoglobulins. PMID- 3838644 TI - Uteruslike mass of the ovary: endomyometriosis or congenital malformation? A case with a discussion of histogenesis. AB - We describe an 18-year-old woman with a mass in the region of the right ovary. The mass, which had a central cavity lined by endometrium and surrounded by smooth muscle, extraordinarily resembled a uterus. Review of the literature disclosed only one such case in which this change was considered to arise from endomyometriosis of the ovary, a phenomenon characterized by smooth-muscle metaplasia in a focus of endometriosis. Although this possibility is interesting and plausible, we believe that a congenital malformation, possibly caused by a defect in fusion of mullerian ducts, should strongly be considered in explaining the pathogenesis of this kind of lesion. PMID- 3838645 TI - Infantile hematomyelia complicating electrocardioversion. AB - A premature male infant survived for eight months with significant cardiorespiratory problems. He developed a sudden, unexplained cardiorespiratory arrest that required vigorous resuscitation with apparent electrical cardioversion. Subsequent postmortem examination demonstrated focal and confluent hemorrhages in the thoracic and lumbar cord. Care is advised in administering electrical cardioversion due to the potential hazard of hematomyelia. PMID- 3838646 TI - Simultaneous local recurrence of retroperitoneal paraganglioma with liver metastases. AB - A 68-year-old woman with a history of a nonfunctional paraganglioma resected 23 years previously presented with an abdominal mass. Tumor metastases to the liver were seen at the second operation. The tumor had a more pleomorphic appearance, but was otherwise similar to the original tumor. We discuss the difficulty of predicting the later malignant behavior of the tumor from the original biopsy specimen. PMID- 3838647 TI - Adrenal cyst. AB - Adrenal cysts are rare lesions that usually present as incidental findings during surgery or at the time of autopsy. The cysts are usually small, seldom exceeding 10 cm in diameter, and are generally asymptomatic. In those few cases that are symptomatic, radiographic examination is the most important tool in establishing a correct preoperative diagnosis. Of the four main categories, endothelial cysts represent the most common type of adrenal cyst. Simple surgical enucleation of the cyst, with preservation of the remaining adrenal gland, is the treatment of choice. PMID- 3838648 TI - Budd-Chiari syndrome presenting as sudden infant death. AB - Budd-Chiari syndrome rarely occurs in infants. We report a case of a 1-month-old female infant who presented as a sudden infant death and was found at autopsy to have thrombi occluding both hepatic veins. Microscopically the liver showed perivenular fibrosis extending into the lobule and central venous congestion consistent with Budd-Chiari syndrome. PMID- 3838649 TI - Cell surface and serum monoclonal immunoglobulin in Burkitt's lymphoma. PMID- 3838650 TI - Hepatitis, the delta agent and modern virology. PMID- 3838651 TI - Delta agent superinfection. Rapidly progressive liver disease in a hepatitis B virus carrier. AB - We report a case of rapidly progressive chronic active hepatitis (CAH) following acute delta infection in a previously asymptomatic hepatitis B virus carrier. Serologic evidence of delta superinfection coincided with an acute icteric hepatitis, and was followed by the development of clinically evident chronic liver disease. The liver biopsy specimens documented the acute hepatitis and subsequent progression of severe CAH. This case illustrates the clinical and pathologic changes that may follow acute delta infection in chronic hepatitis B carriers. PMID- 3838652 TI - Serum hepatitis B virus-DNA in chronic hepatitis B and delta infection. AB - Hepatitis B-associated delta agent, a defective RNA virus requiring helper functions of hepatitis B virus (HBV), has been shown to interfere with HBV replication. Low titers of serum hepatitis B surface antigen, absence of hepatitis B e antigen, and low levels of stainable hepatitis B core antigen in liver cells usually seen in chronic delta infection are indirect evidences of such an interference. Measurement of serum HBV-DNA by hybridization with phosphorus 32-labeled HBV-clone DNA is the most sensitive method currently available to detect HBV replication. Using this method, we found that only two of 13 patients with chronic delta infection showed serum HBV-DNA positivity in comparison with seven of 14 patients who had chronic hepatitis B without delta infection. These two groups were matched for hepatitis B e antigen status and liver histopathology. Thus, we report direct evidence of delta agent interfering with the replication of the helper (HBV) virus. PMID- 3838653 TI - Diffuse alveolar damage and interstitial fibrosis in acquired immunodeficiency syndrome patients without concurrent pulmonary infection. AB - Patients with acquired immunodeficiency syndrome (AIDS) characteristically present with repeated pulmonary infections. We present the pathologic findings in lung biopsy specimens from 12 patients with AIDS in whom the histologic spectrum ranged from mild diffuse alveolar damage to frank interstitial fibrosis. In all of these patients, there was no evidence of any concurrent infectious process in the lung. Diffuse alveolar damage is a pattern of response of the lung to many kinds of infectious processes and immunologic injury, both of which are potential possibilities in patients with AIDS. This study underscores the development of diffuse alveolar damage or interstitial fibrosis and their presentation as the sole histologic findings in lung biopsy specimens from patients with AIDS. We discuss the possibility that these changes may be long-term sequelae to repeated pulmonary infections with or without an immunologic defect. PMID- 3838654 TI - Pulmonary capillaritis and hemorrhage in patients with systemic vasculitis. AB - Thirteen patients with prominent pulmonary signs and symptoms had pulmonary capillaritis and extensive hemorrhage demonstrated by open-lung biopsy or autopsy. Vasculitis was demonstrated in other organs before or after the lung biopsy or at autopsy. Although there were several suspected causes for the pulmonary capillaritis and different final clinicopathologic diagnoses, the histopathologic features in the lung were similar in all cases and distinctive enough to separate capillaritis from other causes of hemorrhagic lung. All patients were treated with prednisone or cyclophosphamide, or both. Six patients died of their vasculitis, five in respiratory failure and one in renal failure. None of the seven survivors had a clinical recrudescence of pulmonary hemorrhage. By extrapolation from these 13 cases, one may histopathologically recognize pulmonary capillaritis when it causes hemorrhagic lung in a patient without clinically evident extrapulmonary vasculitis. One can then proceed to investigate the patient and possibly determine the nature of the vasculitis. PMID- 3838655 TI - Hepatic Hodgkin's disease simulating cholestatic hepatitis with liver failure. AB - Fulminant liver failure is an unusual complication that may be seen in patients with hepatic infiltration by non-Hodgkin's lymphomas and leukemias. In such cases, hepatomegaly, marked abnormalities of serum liver function tests, and lactic acidosis may simulate severe viral, alcoholic, or drug hepatitis. We describe the clinical presentation of severe cholestatic hepatitis with liver failure in a patient who was found to have widespread liver involvement by Hodgkin's disease at autopsy. The major histologic findings included extensive portal and periportal Hodgkin's infiltrates, associated loss of periportal liver cells, and variable damage to small bile ducts. PMID- 3838656 TI - Partial nodular transformation of liver in an adult with persistent ductus venosus. Review with hypothesis on pathogenesis. AB - Partial nodular transformation of the liver (PNT) is a rare condition of unknown pathogenesis in which nodules composed of hepatocytes replace portions of the parenchyma. There is usually evidence of portal hypertension and portal vein thrombosis. We present a case of PNT in a man with persistent ductus venosus and hypoplasia of the major intrahepatic portal veins but without evidence of portal hypertension or portal vein thrombosis. Portal venules were largely absent between nodules, as documented by morphometry. We suggest the pathogenesis of PNT is similar to that previously proposed for nodular regenerative hyperplasia, that is, atrophy occurs in parenchyma with insufficient blood supply and nodules arise by hyperplasia in areas with adequate supply. Partial nodular transformation and nodular regenerative hyperplasia differ mainly in the cause and distribution of the portal vein obliteration. PMID- 3838657 TI - Bile pancreatitis. AB - Bile pancreatitis was studied both macropathologically and histopathologically in cases with an abnormal pancreatic choledochoductal junction, in which free communication between the pancreatic duct and the common bile duct occurred. The intraductal pressure of the pancreatic duct is normally higher than that of the bile duct, therefore, the pancreatic juice flows into the bile duct. In this study, we found squamous carcinoma cells from an adeno-squamous cell carcinoma of the gall-bladder in the main pancreatic duct. Hence, the possibility of bile reflux into the pancreatic duct was also considered. Outstanding findings, such as degeneration and disappearance of the pancreatic ductal epithelium, intraluminal aggregation of bacilli, and diffuse interlobular fibrosis were found in four of 15 cases with an abnormal junction. Similar ductal alterations and diffuse fibrosis were found neither in the controls nor in the remaining 11 cases. Therefore, it appears that pancreatic disorders due to the reflux of bile occurs in the presence of bacteria. PMID- 3838658 TI - False-positive guaiac testing with iodine. AB - The guaiac-impregnated test slide (Hemoccult) used in testing for occult blood in the stool gave a false-positive reaction in a trauma patient when a povidone iodine antiseptic solution (Betadine) was used prior to the insertion of a urinary catheter. Laboratory testing using serial dilutions of povidone-iodine solutions indicates that as little as 0.005 mL of a 1:1,000 dilution will give a positive guaiac reaction. Separate testing confirms that the iodine component is responsible for this false-positive reaction. The mechanism is probably direct oxidation of the alpha-guaiaconic acid chromogen. Patients with perianal decubiti who are being treated with povidone-iodine solution, or those who have recently had a urinary catheter inserted, may need to have the area washed prior to guaiac testing. Antiseptics not containing iodine may be used in trauma patients to prevent false-positive guaiac reactions. PMID- 3838659 TI - Potter's syndrome associated with renal agenesis or dysplasia. Morphological and biochemical study of the lung. AB - We report on four autopsy cases of Potter's syndrome associated with characteristic Potter's face, pulmonary hypoplasia, and renal agenesis or dysplasia. There were no pathologic differences in typical cases with bilateral renal agenesis and variant cases with renal dysplasia instead of renal agenesis. All cases showed bilateral pulmonary hypoplasias and immature lung microscopically. Hyaline membrane disease was found in three cases in spite of late gestation. In one case with renal dysplasia, disaturated phosphatidylcholine, a pulmonary surfactant phospholipid, was measured and found to be decreased in comparison with that in age-matched controls. This suggests that functionally immature lung may be one feature of Potter's syndrome that is similar to hyaline membrane disease. PMID- 3838660 TI - Endothelial and lesion cell growth patterns of early smooth-muscle cell atherosclerotic lesions in swine. AB - This study shows that the endothelial cell turnover over the early porcine atherosclerotic lesion is more or less uniform in distribution. This is contrary to the findings in White Carneau pigeons where the increased endothelial cell turnover has a zonal pattern, being much greater at the lesion edge. The difference in the endothelial cell pattern of turnover in the two lesions probably is a reflection of their different manner of development. The porcine abdominal aortic lesion is derived from naturally occurring preexisting collections of intimal smooth-muscle cells called intimal cell masses. After 90 days of a hyperlipidemic diet these lesions are composed predominantly of smooth muscle cells, with very few monocytes. The White Carneau pigeon lesion develops from circulating monocytes that have been shown to adhere to the edge of the lesion. PMID- 3838661 TI - Dilated cardiomyopathy associated with Friedreich's ataxia. AB - Friedreich's ataxia (FA) is a progressive, spinocerebellar, degenerative, neuromuscular disease that is frequently associated with hypertrophic cardiomyopathy as part of the clinical illness. Hypertrophic cardiomyopathy associated with FA can be seen with or without obstruction to the left ventricle outflow tract. We present the postmortem findings in a case of FA with dilated (congestive) cardiomyopathy. At autopsy, the heart was enlarged with all four chambers dilated; no ventricular hypertrophy or aortic outflow obstruction was present. Microscopic sections of myocardium revealed myocyte hypertrophy, atrophy, and focal interstitial fibrosis. Findings of dilated cardiomyopathy at necropsy supported the antemortem clinical impression. Although FA has been reported to be associated rarely with dilated cardiomyopathy, postmortem documentation of dilated cardiomyopathy with FA has not been shown previously, to our knowledge. The mechanism of either form of myocardial disease in patients with FA is presently speculative. PMID- 3838662 TI - Clues to the early diagnosis of Mycobacterium avium-intracellulare infection in patients with acquired immunodeficiency syndrome. AB - Four patients with acquired immunodeficiency syndrome with bacillemia from Mycobacterium avium-intracellulare presented with early pathologic clues of a disseminated mycobacterial infection. All had persistent fevers with negative diagnostic workups for other usual pathogens seen in patients with acquired immunodeficiency syndrome. Two patients had prolonged clearance of the bacillemia on a drug regimen of ansamycin, clofazimine, and amikacin sulfate. PMID- 3838663 TI - Coronary ostial bar. AB - This article describes an unusual minor coronary artery anomaly. An intimal-lined fibromuscular bar was found bisecting a right coronary ostium. Possible origin and clinical relevance of the lesion are discussed. PMID- 3838664 TI - Pheochromocytoma-ganglioneuroma of the adrenal. AB - Composite adrenal tumors composed of both pheochromocytoma and ganglioneuroma are rare. To our knowledge, only two cases have been reported previously, displaying symptoms referable, in the first case to vasoactive intestinal polypeptide production and, in the second case, to catecholamine production. We report a case of composite pheochromocytoma-ganglioneuroma associated with renal angiomyolipoma and elevated urinary and serum catecholamine levels. Light and electron microscopic findings are described. PMID- 3838665 TI - Structure and apoprotein linkages of phycourobilin. AB - R-Phycoerythrin contains two covalently bound bilin prosthetic groups, phycoerythrobilin and phycourobilin. The two chromophore types were separated as their peptide-bound derivatives by subjecting tryptic digests of R-phycoerythrin to adsorption chromatography on Sephadex G-25. The structure and apoprotein linkages of the bound phycoerythrobilin were found to be identical with those previously reported for this phycobilin [Killilea, O'Carra & Murphy (1980) Biochem. J. 187, 311-320]. Phycourobilin is a tetrapyrrole, containing no oxo bridges and has the same order of side chains as IX alpha bilins. The chromophore is linked to the peptide through two and possibly three of its pyrrole rings. One linkage possibly consists of an ester bond between the hydroxy group of a serine residue and the propionic acid side chain of one of the inner rings. The second linkage is a labile thioether bond between a cysteine residue and the C2 side chain of pyrrole ring A. The third linkage is a stable thioether bond between a cysteine residue and the alpha-carbon atom of the C2 side chain of pyrrole ring D. Ring D is unsaturated and is attached to ring C through a saturated carbon bridge. Rings B and C have a conjugated system of five bonds, as found in other urobilinoid pigments. Ring A is attached to ring B via a saturated carbon bridge. Both of the alpha-positions of ring A are in the reduced state, but the ring does contain an unsaturated centre (probably a double bond between the beta-carbon and the ring nitrogen atom). The presence of this double bond and its isomerization into the bridge position between rings A and B would explain the extension of the conjugated system of phycourobilin to that of a phycoerythrobilinoid/rhodenoid pigment in acid or alkali. PMID- 3838666 TI - Interactions of concanavalin A with a trimannosyl oligosaccharide fragment of complex and high mannose type glycopeptides. AB - It has previously been reported that the binding interactions of concanavalin A with a purified high mannose type glycopeptide from ovalbumin differs from that with simple mono- and oligosaccharides (Brewer, C.F. (1979) Biochem. Biophys. Res. Commun. 90, 117-122). We now report studies with a synthetic analog of complex type glycopeptides, and a synthetic trimannosyl oligosaccharide fragment that is common to both complex and high mannose type glycopeptides. We find that both synthetic oligosacchardes undergo similar interactions with concanavalin A which mimic the effects of binding corresponding larger glycopeptides. Furthermore, the relative affinity of the trimannosyl oligosaccharide is 130-fold greater than the binding of methyl-alpha-D-mannopyranoside. The results indicate that the trimannosyl oligosaccharide is a unique structural element recognized by the lectin. PMID- 3838667 TI - Inhibition of glycine N-methyltransferase activity by folate derivatives: implications for regulation of methyl group metabolism. AB - Glycine N-methyltransferase, an enzyme that uses S-adenosylmethionine to methylate glycine with the production of sarcosine, was recently shown to be identical with a major folate binding protein of rat liver (Cook, R.J. and Wagner, C. (1984) Proc. Natl. Acad. Sci. U.S.A. 81, 3631-3634). We now present evidence that 5-methyltetrahydropteroylpentaglutamate (5-CH3-H4PteGlu5) is bound with high specificity, and is a powerful inhibitor of the enzyme. It is proposed that this information may be used to modify the "methyl trap" hypothesis which describes how the availability of one-carbon units is regulated by folate, vitamin B12 and methionine. PMID- 3838668 TI - High prealbumin and transferrin mRNA levels in the choroid plexus of rat brain. AB - Expression of plasma protein genes in various parts of the rat brain was studied by hybridizing radioactive cDNA to RNA in cytoplasmic extracts. No mRNA could be detected in brain for the beta subunit of fibrinogen, major acute phase alpha 1 protein, alpha 1-acid glycoprotein and albumin. However, per g tissue, the choroid plexus contained at least 100 times larger amounts of prealbumin mRNA than the liver and about the same amount of transferrin mRNA as liver. No prealbumin mRNA was found in other areas of the brain. The results obtained suggest very active synthesis of prealbumin in choroid plexus, which would be an important link in the transport of thyroid hormones from the blood to the brain via the cerebrospinal fluid. PMID- 3838669 TI - Fusion of phospholipid vesicles induced by Zn2+, Cd2+, and Hg2+. AB - The capacity of Zn2+, Cd2+, or Hg2+ to induce fusion of phospholipid vesicles composed of 50%/50%, 60%/40%, or 80%/20% dipalmitoyl phosphatidylcholine (DPPC)/bovine brain phosphatidylserine (PS) was investigated and compared to that of Ca2+ and Mg2+. In vesicles composed of 50%/50% or 60%/40% DPPC/PS, Zn2+ and Cd2+-induced fusion at concentrations considerably lower than were required for Ca2+-induced fusion. Only limited fusion of 80%/20% DPPC/PS vesicles occurred and Zn2+ was more effective than Ca2+ or Cd2+ in inducing fusion of these vesicles. Mg2+ and Hg2+ did not induce fusion in any of the vesicle systems. PMID- 3838670 TI - Effects of 1-[2-ethoxy-2-(3'-pyridyl)ethyl]-4-(2'-methoxyphenyl)piperazine (IP 66), prazosin, yohimbine and dihydroergotoxine mesylate on the vasoconstriction of rat mesenteric artery induced by electric stimulation and exogenous norepinephrine. AB - The effect of (1-[2-ethoxy-2-(3'-pyridyl)ethyl]-4-(2'-methoxy-phenyl)piperazine (IP-66) on the contraction of rat mesenteric artery induced by electric stimulation (ESV) or by injection of norepinephrine (NESV) was compared with the effects of prazosin, yohimbine and dihydroergotoxine mesylate (DHEM). Interference of propranolol on the effects of the 4 alpha-blockers was also considered. Prazosin has proved to be the strongest antagonist of alpha 1 receptors towards which, however, it showed a certain bond latency. In particular conditions related to increased perfusion time and concentrations prazosin also seemed to lose selectivity towards alpha 1-receptors. It was observed that yohimbine is a weak postsynaptic antagonist whereas DHEM showed scarce selectivity. IP-66 proved to be a strong postsynaptic antagonist with negligible presynaptic effect. It was not as strong as prazosin but its bond with alpha 1 receptors appeared more rapid and steady. Results obtained with prazosin or DHEM and propranolol seemed to suggest an equilibrium between beta 2- and alpha 1 receptors shifted towards the latter. PMID- 3838671 TI - KINPAK--a new program package for standardized evaluation of kinetic parameters. AB - Concept and basic routines of a new program package (KINPAK) for standardized evaluation of kinetic parameters are described. This new program is not based on compartmental analysis. Instead the experimental data sequence is fitted by flexible regression functions adequate for concentration-time curves. From fitted regression curves the relevant biologic parameters are calculated. These parameters express mainly the geometric properties of the curve. The fitting and parameter calculation is governed by numerous plausibility checks which guarantee feasible and reproducible results without arbitary intervention by the user. The program is mainly designed for use in industrial research and for presentation to administrative authorities. The methods are standardized and concieved to be performed as closed job. Tables and graphs can be generated for entire experimental series and are ready for use as documentation required by regulatory agencies. PMID- 3838672 TI - Distribution and binding of glycosaminoglycan polysulfate to intervertebral disc, knee joint articular cartilage and meniscus. AB - The relative incorporation of 3H-Glycosaminoglycan polysulfate (3H-GP, Arteparon) into rabbit knee joint articular cartilage, patella cartilage, meniscus and intervertebral disc tissues was determined at 1, 2, 4 and 8 d after intramuscular administration (60 muCi/kg, 400 micrograms/kg). The distribution of the drug within these tissues was also examined autoradiographically. The highest uptake of 3H-GP occurred in the menisci and was observed to be largely localised about collagen fibres on the outer periphery of these tissues. Over the eight day period, the level present declined to approximately 50% of that present on day one. The level of drug attained in articular and patella cartilages was approximately 20-25% of that in the meniscus. It was uniformly dispersed and remained fairly constant over the eight day period. Of greatest interest was the finding for the disc, where the highest level of labelling, which occurred on day two, was comparable to the knee joint hyaline cartilages and was associated with the collagenous lamella structure of the outer annulus fibrosus. After day two, the level of drug in these areas declined, accompanied by an accumulation in the nucleus pulposus. Using an ion exchange assay technique, and gel permeation chromatography of 4M guanidine hydrochloride extracts of these connective tissues, binding of 3H-GP to proteoglycans, collagen and non-collagenous proteins, was demonstrated; the latter component representing the major drug binding species. It is suggested that localisation of the drug within these connective tissues may be beneficial in protecting their matrix components against enzymatic degradation in the pathological state. PMID- 3838673 TI - Simulation studies of errors of parameter estimates in pharmacokinetics. AB - Pharmacokinetic parameters are indispensable for the development and evaluation of drugs. Therefore, they are required by international drug agencies and may influence relevant decisions. Their determination from experimental results is only possible with statistical errors. For the estimation of these errors only approximative procedures are available. A widespread approximation (information inequality) is based on specific assumptions which are invalid in practice. Erroneous estimations of unknown amount may consequently result. Alternative methods more adaptable to reality are simulation techniques with random numbers. This technique was used to calculate the statistical variability of parameter estimates for the usual compartment models. The results were compared with the variation of the parameter estimates from a descriptive model function recently developed. Adequate curves were predefined by appropriate parameter sets. Around these curves, a random generator simulated 500 data sequences. Fitting with the appertaining model function resulted in 500 sets of estimated parameters. The statistical behavior of the parameter estimates was investigated. The parameters computed by the fitting procedure--in the compartment models the rate constants- showed a large variation so that an estimate from a single data sequence does barely reproduce the "true" value of the parameter. In contrast, the parameters derived from the geometric properties of the fitted curves (e.g., area under curve, time and height of maximum) showed considerable less variation. As far as these investigations allow a conclusion, the latter parameters seem to be sufficiently reliable for practical purposes. PMID- 3838674 TI - Effect of 8-(3-diethylaminopropyl)-6,6-dimethyl-(2-phenyl-1 H-imidazo(4,5 h))isoquinoline-7,9-(6H)-dione dihydrochloride (AR-LH31) on experimental cardiac arrhythmias in dogs. AB - The effects of intravenously administered 8-(3-diethylaminopropyl)-6,6-dimethyl (2-phenyl-1H-imidazo (4,5H))-isoquinoline-7,9-(6H)-dione dihydrochloride (AR LH31) on experimentally induced ventricular tachycardia were studied in dogs. Ventricular tachycardia was produced in 6 anaesthetised dogs by the intravenous injection of ouabain (66.7 +/- 4.9 mg/kg). AR-LH31 administered by increasing bolus injections every 5 min completely suppressed the ventricular tachycardia with a return to sinus rhythm in 1 out of 6 dogs, with a partial return of sinus beats in a second dog. There was no return to sinus rhythm in the 4 remaining dogs after doses ranging from 1.75 to 15.75 mg/kg. Observations were made in 9 conscious dogs 22-24 hours after ligation of the anterior descending branch of the left coronary artery when a ventricular tachycardia was present. The administration of AR-LH31 by bolus intravenous injection in 4 dogs did not abolish the arrhythmia in any dog but increased the number of sinus beats. In 3 out of 4 dogs after a cumulative dose of 7.75 mg/kg, 60% of ventricular beats were of sinus origin. The effects of larger doses could not be studied be cause of adverse effects. In 5 dogs the administration of AR-LH31 by constant intravenous infusion at 16 mg/kg/h restored sinus rhythm in all dogs after a mean dose of 9.9 +/- 0.9 mg/kg. These studies indicate that AR-LH31 has anti arrhythmic activity in dogs and highlight the importance of the method of administration in determining the effects of a drug. PMID- 3838675 TI - Variability of caffeine metabolism in humans. AB - The metabolic disappearance of caffeine from blood is subject to substantial inter- and intra-individual variation. Smoking of cigarettes and other inducers of aryl hydrocarbon hydroxylase tend to enhance the caffeine metabolism; pregnancy, the use of oral contraceptives, and various kinds of liver disease prolong the caffeine half-life. A genetic component affecting caffeine half-life has not yet been systematically searched for, but might be expected to affect the response to cigarette smoke and similar inducing agents, rather than to provide direct control of caffeine metabolism. The secondary metabolisms of the primary caffeine metabolites are strongly affected by the well-known genetic polymorphism of the N-acetyltransferase of human liver (a polymorphism originally discovered by studies of isoniazid metabolism). Since the proportion of slow acetylators differs in different ethnic populations, many ethnic differences in the ultimate fate of caffeine are to be expected. An observed difference of paraxanthine excretion between Caucasian and Oriental subjects might reflect a difference in the capacity for renal tubular reabsorption of that substance, but further metabolic differences cannot be excluded. The renal elimination of the dimethylxanthines is urinary flow dependent while that of the water soluble metabolites 1-methylxanthine and AFMU (5-acetylamino-6-formylamino-3 methyluracil) is not. Thus, the urinary metabolite pattern can be expected to vary from time to time. However, habitual coffee intake does not affect the metabolite pattern of caffeine. PMID- 3838676 TI - Selective labelling of M1-receptors in autonomic ganglia with 3H-pirenzepine. AB - Using the classical muscarinic antagonist 3H-N-methyl-scopolamine as radioligand and unlabelled pirenzepine (PZ) as displacing agent, a heterogeneous muscarinic receptor population consisting of about 70% M1-receptors and 30% M2-receptor, can be demonstrated in crude membranes of calf sympathetic ganglia. In the same preparation only low and variable specific binding is detectable when 3H-PZ is used as marker ligand. The situation clearly improves when synaptosomes are prepared from the ganglia. Then binding of 3H-PZ can be measured with a favourable specific to non specific binding ratio and with features compatible with the selective labelling of ganglionic M1-receptor sites. It is concluded that the 3H-PZ binding assay in synaptosomes of autonomic ganglia is a novel method for the characterization of the peripheral M1-receptor. PMID- 3838677 TI - [6R-[(R)-2-[3-[2-(p-Aminosulfonyl)anilino-4-hydroxy-5- pyrimidinyl]ureido]-2-(4 hydroxyphenyl)acetamido]-penicillanic acid, sodium salt (VX-VC 43), a new broad spectrum beta-lactam antibiotic. In vitro and in vivo antibiotic activity]. AB - 6R-[(R)-2-[3-[2-(p-Aminosulfonyl) anilino-4-hydroxy-5-pyrimidinyl] ureido]-2-(4 hydroxyphenyl)acetamido]-penicillanic acid, sodium salt (VX-VC 43), a pyrimidinylureidopenicillin, is a broad-spectrum antibiotic. In vitro it is more active than piperacillin, apalcillin and mezlocillin especially against the following strains; E. coli, Ps. aeruginosa, Ps. stutzeri, K. pneumoniae, Eb. cloacae, Ser. marcescens, Proteus, Sh. flexneri, Y. enterocolitica, Cb. freundii, Acb. calcoaceticus, Bacteroides and Sc. faecalis. The minimal inhibitory concentration (MIC, micrograms/ml), for VX-VC 43 lies between 0.06 and 4 for piperacillin between 0.25 and 16, for apalcillin between 0.25 and 8, and for mezlocillin between 0.5 and 32. The action of VX-VC 43 is bactericidal. In tests against patient-isolates of E. coli (n = 50), Ps. aeruginosa (n = 50), K. pneumoniae (n = 46) and Eb. cloacae (n = 50) VX-VC 43 is clearly more active than Piperacillin. In the case of Ps. aeruginosa 2 micrograms/ml VX-VC 43 inhibits 43.9% of the bacteria and 8.5% with piperacillin; for E. coli 0.25 micrograms/ml inhibits 43.9% with VX-VC 43 and 0% with piperacillin; for K. pneumoniae 4 micrograms/ml inhibits 43.7% with VX-VC 43 and 28% for piperacillin; with Eb. cloacae 2 micrograms/ml inhibits 78% with VX-VC 43 and 4% with piperacillin. Addition of 50% human serum, or a change in culture medium pH (from 6 to 8) has little or no effect on the MIC of VX-VC 43 or piperacillin.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838678 TI - Maternal paralytic ileus as a complication of magnesium sulfate tocolysis. AB - Beta-adrenergic agonists tocolysis is currently the most popular treatment modality in the United States. However, magnesium sulfate is receiving increasing attention as an alternating tocolytic agent in the presence of various clinical situations, such as the treatment of insulin-dependent diabetes. While there is an abundance of information about the maternal and fetal side effects associated with beta-adrenergic tocolysis, little information is available about maternal adverse side effects of magnesium sulfate treatment for preterm labor. Side effects such as pulmonary edema, respiratory depression, hypocalcemia, and hypermagnesemia have been reported in patients receiving this agent for either tocolysis or pre-eclampsia, though their occurrence is quite rare. One of the infrequent complications of beta-adrenergic agonist tocolysis is the occurrence of a paralytic ileus, which to our knowledge has not yet been reported in association with magnesium sulfate tocolysis. This article therefore concerns the development of a paralytic ileus in a patient receiving parenteral magnesium sulfate for tocolysis. The clinical features are described and the possible mechanisms involved discussed. PMID- 3838679 TI - Mitral valve prolapse in hyperthyroidism of two different origins. AB - The prevalence of mitral valve prolapse was investigated in 126 patients with hyperthyroidism due to Graves' disease or toxic nodular goitre and that of hyperthyroidism in 64 patients with mitral valve prolapse. One hundred and eleven asymptomatic healthy subjects comprised a control group. The patients with hyperthyroidism were divided into those with Graves' disease and those with toxic nodular goitre. Of the group as whole, 12 (9.5%) patients had mitral valve prolapse compared with six (5.4%) in the control group, but the difference was not statistically significant. The prevalence of mitral valve prolapse in the patients with toxic goitre was also not significantly different from that in the controls. When the prevalence in the group with Graves' disease was compared with that in the control group (16.3% vs 5.4%) the difference was significant. Only one patient with mitral valve prolapse had hyperthyroidism. PMID- 3838680 TI - Effect of intrathecal diamorphine on the adrenocortical, hyperglycaemic and cardiovascular responses to major colonic surgery. AB - The effect of the intrathecal administration of diamorphine on the hyperglycaemic, adrenocortical and cardiovascular responses to major colonic surgery were investigated, and the results compared with those obtained in a similar group of patients receiving low doses of fentanyl. In the group receiving intrathecal diamorphine, the hyperglycaemic response was delayed, and the adrenocortical response decreased significantly both during and following surgery; there were no significant cardiovascular responses to incision, and analgesia was prolonged after operation. PMID- 3838681 TI - A comparative study of the pulmonary effects of NO2 in the rat and hamster. AB - A study of the response of rat and hamster to nitrogen dioxide (NO2) under identical conditions has been undertaken. Exposure to 20 parts/IO6 NO2 for 24 h produced a mild cytotoxic effect on the terminal bronchiole and proximal alveoli in the rat, whereas the hamster developed a moderate to severe bronchiolitis and alveolitis. Electron microscopic examination of tissue sections showed accumulation of surfactant in lamellar bodies of the alveolar type II cell in the rat but not in the hamster, whereas in the hamster Clara cells were observed in mitosis. Increased levels of surfactant isolated from whole lung homogenates by sucrose gradient centrifugation were found in both rat and hamster. In contrast surfactant isolated from bronchiolo-alveolar lavage was increased only in the hamster. The results suggest that caution must be exercised in the choice of animal model in investigations aimed at the understanding of the toxicological effects of nitrogen dioxide in man. PMID- 3838682 TI - Comparison of the crystallin mRNA populations from rat, calf and duck lens. Evidence for a longer alpha A2-mRNA and two distinct alpha B2-mRNAs in the birds. AB - Total cytoplasmic poly(A)-containing RNA from rat, calf and duck lens was fractionated by electrophoresis in methylmercury hydroxide-containing agarose gels. RNA electrophoresed in parallel lanes was either transferred onto nitrocellulose and hybridized with total cDNA synthesized on the initial mRNA or was recovered from individual gel fractions for in vitro translation in a reticulocyte cell-free system. This allowed the identification and size characterization of individual mRNA species encoding alpha-, beta-, gamma- and delta-crystallin polypeptides. The 14 S mRNA fraction of rat lens comprises two alpha A2-mRNAs of approximately 1250 and 1350 nucleotides and the alpha AIns-mRNA with a size similar to that of the largest alpha A2-mRNA. The calf lens 14 S mRNA fraction harbors a heterogeneous population of alpha A2-mRNA. In the same fraction another mRNA encoding a polypeptide, designated X, has been found sharing no homology with alpha A sequences. The duck lens alpha A2-mRNA appears to be 400-450 bases longer than the rat and calf lens alpha A2-mRNAs. Furthermore, in contrast to the single alpha B2-mRNA in rat and calf lens, two alpha B2-mRNAs have been identified in duck lens, one, the major species, similar in size to the alpha B2-mRNA in rat and calf lens (800 bases), and the other species 700 nucleotides longer. The large size differences among the alpha A2- and alpha B2-mRNAs most likely reside in their 3'-untranslated sequences. PMID- 3838683 TI - Cross-linking studies of adrenocortical cytochrome P-450scc. Evidence for a covalent complex with adrenodoxin and localization of the adrenodoxin-binding domain. AB - A cleavable cross-linking reagent, dimethyl-3,3'-dithiobispropionimidate, was used to study the molecular organization of adrenocortical cytochrome P-450scc. Extensive cross-linking was found to occur, resulting in the formation of heterologous oligomers up to octamer. The covalently cross-linked complex of adrenocortical cytochrome P-450scc with adrenodoxin has been obtained by using dimethyl-3,3'-dithiobispropionimidate. In the presence of NADPH and adrenodoxin reductase, electron transfer to cytochrome P-450scc occurs in the complex, and, in the presence of cholesterol, the latter effectively oxidizes to pregnenolone. By using covalently immobilized adrenodoxin and heterobifunctional reagent, N succinimidyl-3-(2-pyridyldithio)propionate, the adrenodoxin-binding site was shown to be located in the heme-containing, catalytic domain of cytochrome P 450scc. The data obtained indicate the existence of two different sites on the adrenodoxin molecule that are responsible for the interaction with adrenodoxin reductase and cytochrome P-450scc. This is consistent with the model mechanism of electron transfer in the organized complex. PMID- 3838684 TI - [Functional interrelations of brain structures in the cat during the generation of rhythmic activity. III. Cluster analysis of rhythmic indices]. AB - The functional interrelationships of the brain structures of freely moving cats in generation of rhythmic EEG activity during the states of drowsiness and light sleep were evaluated using the claster analysis of mean values indexes of rhythms in different structures as well as correlation coefficients between them in time. It was shown that according these parameters visual cortical areas and lateral geniculate body appeared in different clusters. Lateral geniculate body suggested not to be the only pacemaker of EEG rhythms in visual cortex. The wide convergence of subcortical inputs to the visual cortex and possibility of autonomic generation of EEG rhythms at the cortical level are discussed as putative mechanisms of dissociation of EEG activities in visual cortex and thalamus. PMID- 3838685 TI - Interaction between Ca2+ and dipalmitoylphosphatidylcholine membranes. I. Transition anomalies of ultrasonic properties. AB - The effect of Ca2+ on a gel-to-liquid crystal transition as well as the mechanical properties of dipalmitoylphosphatidylcholine bilayers was studied by an ultrasonic technique. Transition temperature increased with increase in Ca2+ concentration, whereas the variation of ultrasonic anomalies indicated that dipalmitoylphosphatidylcholine bilayers exhibited maximum pseudocritical fluctuation at a Ca2+ concentration of about 10 mM. Hardening of dipalmitoylphosphatidylcholine membranes due to the Ca2+ binding was observed above 10 mM CaCl2, suggesting the lateral compression of the lipid bilayer by bound Ca2+. Long-range attraction between bound Ca2+ and the head groups of surrounding lipid molecules was proposed from these calcium effects. PMID- 3838686 TI - Interaction between Ca2+ and dipalmitoylphosphatidylcholine membranes. II. Fluorescence anisotropy study. AB - The effect of Ca2+ on the molecular mobility in dipalmitoylphosphatidylcholine membranes was studied by steady-state and time-resolved measurements of fluorescence anisotropy. The fluorescence anisotropy decay of 1,6-diphenyl-1,3,5 hexatriene in the hydrocarbon region indicated that the free volume of molecular rotation became more restricted when the Ca2+ concentration was increased. The decrease of the molecular mobility was observed from 1 mM Ca2+, at which the number of bound Ca2+ is much less than that of the total lipid molecules. A distinct difference between Ca2+ and Mg2+ effects suggested that the change in various membrane properties was induced by the binding of these ions. From these results we propose a long-range attractive interaction between bound Ca2+ and the polar head groups of distant phosphatidylcholine molecules. PMID- 3838687 TI - [Antagonism of piracetam with proline in relation to mnestic effects]. AB - Based on the authors' previous data showing that the lipophylic cethyl group promotes the penetration of amino acids through the blood-brain barrier, proline cethyl ester was synthesized and studied as a neuropharmacological tool. The substance administered to rats systemically (intraperitoneally) was shown to be able to provoke a deep amnesia when tested by the conditioned avoidance performance. Piracetam abolished the amnestic effect of proline cethyl ester while sodium hydroxybutyrate administered in the dosage range provoking the nootropic effect did not change that amnesia. The data suggest that proline may be considered as one of the possible endogenous amnestic factors. The close structural similarity of the piracetam cyclic fragment to proline, which resulted in their competition, appears to be one of the reasons for piracetam antiamnestic activity. PMID- 3838688 TI - Naphthalene distribution in tissues of laying pullets, swine, and dairy cattle. PMID- 3838689 TI - Depressant actions of gamma-D-glutamylaminomethyl sulfonate (GAMS) on amino acid induced and synaptic excitation in the cat spinal cord. AB - We have investigated the effects of iontophoretically administered gamma-D glutamylaminomethyl sulfonate (GAMS) on excitation of dorsal horn neurons and Renshaw cells of the cat spinal cord induced by exogenous excitants and by synaptic activation following stimulation of low threshold primary afferent fibers. Comparisons were made between the synaptic depressant effects of GAMS and those of gamma-D-glutamylglycine (gamma DGG) and (+/-)-2-amino-5 phosphonovalerate (APV). At low iontophoretic ejection currents, GAMS showed clear selectivity in antagonizing responses to excitatory amino acids in the order kainate greater than quisqualate greater than L-aspartate greater than NMDA greater than L-glutamate. This selectivity was decreased at high ejection currents, when acetylcholine-induced excitation of Renshaw cells was also reduced. GAMS was equieffective with gamma DGG in depressing both APV-sensitive polysynaptic excitation and APV-resistant monosynaptic excitation of spinal neurons. Ventral root evoked excitation of Renshaw cells was not reduced by GAMS. In some cells a depression of synaptic excitation by GAMS was observed in the absence of an effect on either L-glutamate- or L-aspartate-induced excitation. This raises the possibility that some other endogenous substance may be a transmitter acting at kainate/quisqualate type receptors in the cat spinal cord. However, other factors are discussed which may explain this observation. PMID- 3838690 TI - Potentiation of morphine analgesia by the cholecystokinin antagonist proglumide. AB - Recent evidence has suggested that cholecystokinin (CCK) may act as a physiological opiate antagonist. Both the overlap of CCK and opiate systems within the central nervous system and the fact that exogenous CCK can antagonize opiate analgesia suggest that endogenous CCK systems interact with opiate mediated pain inhibitory systems. In the present series of experiments, we examined the effect of the CCK receptor antagonist proglumide on various forms of morphine analgesia. We have observed that proglumide can potentiate morphine analgesia following systemic, intrathecal or intracerebral administration of these drugs. Endogenous CCK systems do not appear to be tonically active since neither systemic, intrathecal nor intracerebral proglumide typically produced measurable analgesia in the absence of morphine. These data suggest that CCK may be released in response to opiate administration and acts to return the organism toward its basal level of pain sensitivity. If such a hypothesis is in fact true, then CCK blockade may be of clinical value in the treatment of pain. PMID- 3838691 TI - Cholecystokinin antagonists selectively potentiate analgesia induced by endogenous opiates. AB - We have recently observed that exogenous sulfated cholecystokinin octapeptide (CCK) can antagonize various forms of opiate analgesia and that the CCK receptor blocker proglumide potentiates morphine analgesia. These observations, plus the similarity in the distribution of CCK and opiate systems, suggest that endogenous CCK may act as a physiological opiate antagonist. We have extended these initial studies by examining the effect of CCK antagonists on opiate analgesia produced by release of endogenous opiates (front paw footshock induced analgesia) and by intrathecal administration of D-Ala-methionine enkephalinamide, a stable analogue of an endogenous opiate. Additionally, the specificity of proglumide's effect was examined by testing the effect of this drug on various forms of non-opiate analgesia. This series of experiments demonstrate that CCK antagonists can markedly potentiate analgesia induced by endogenous opiates and provide strong support for the hypothesis that endogenous CCK systems can oppose the analgesic effects of opiates. Potentiation of analgesia by CCK receptor blockers appears to be selective for opiate systems since proglumide typically attenuated or had no effect on various forms of non-opiate analgesia. These data suggest that CCK blockers may be clinically useful for enhancing the analgesic effects of procedures such as acupuncture, which may be mediated by release of endogenous opiates. PMID- 3838692 TI - Cross-reactivities of neuropeptide Y and peptide YY with pancreatic polypeptide antisera: evidence for the existence of pancreatic polypeptide in the brain. AB - Highly purified neuropeptide Y (NPY) and peptide YY (PYY) did not cross-react in our human pancreatic polypeptide (hPP) radioimmunoassay, nor did 125I-labelled NPY and PYY, even with anti-hPP serum at low dilution (1:1000). However, both [125I]NPY and [125I]PYY significantly cross-reacted with anti-bovine PP (bPP) serum at low dilution (1:1000, similar to that used in immunohistochemistry). These results suggest that radioassayable hPP-like peptide in the porcine or canine brain is probably pancreatic polypeptide itself, otherwise immunohistochemically detected bPP-like peptide may represent both NPY and PP. PMID- 3838693 TI - A simple interface emancipates your computer from interspike interval duration measurement primitives. AB - A simple interface to a computer is described which through hardware measures interspike interval durations or events of similar time course. Two examples of software interface to a microcomputer are given. The device releases the computer from low level tasks and thus allows better utilization of a tool of increasing usefulness. PMID- 3838695 TI - Failure of gallamine and pancuronium to inhibit selectively (-)-[3H]quinuclidinyl benzilate binding in guinea-pig atria. AB - Binding of (-)-[3H]quinuclidinyl benzilate (QNB) to muscarinic sites in guinea pig atrial and ileal longitudinal muscle homogenates showed the presence of a single population of binding sites in atria (KD = 41 (32-53) (95% confidence limits) pM; Bmax = 0.225 +/- 0.02 pmol/mg protein (3)) and two binding sites in the ileum (KD = 20.9 (8.8-49) pM and 11.3 nM; Bmax = 0.436 +/- 0.09 and 11.85 +/- 2.63 pmol/mg protein (4), respectively). Atropine, gallamine, and pancuronium displaced (-)-[3H]QNB binding from the high affinity binding sites in the two tissues in a dose-dependent manner with -log Ki values of 8.6, 6.4, and 6.9, respectively, in atria and 8.7, 6.8, and 6.9, respectively, in ileal longitudinal muscle. The lack of selectivity of gallamine and pancuronium in binding experiments differed from results obtained in isolated tissue experiments where these antagonists showed a marked difference in their ability to antagonize cholinomimetics in the two tissues. In addition, the Ki values for gallamine and pancuronium in ileal homogenates were ca. 130- and 16-fold lower, respectively, than their KB values determined from isolated tissue experiments. Attempts to correlate data from binding experiments and isolated tissue experiments using combinations of antagonists led to variable results attributed to differences in the rates of dissociation of the antagonists from muscarinic receptors. It is concluded that the interaction of gallamine or pancuronium with agonists or antagonists at muscarinic receptors is not a simple bimolecular interaction. PMID- 3838694 TI - Atracurium and severe hepatic disease: a case report. AB - Atracurium is a new non-depolarising neuromuscular blocking agent, metabolized through Hofmann elimination. A case is presented in which a 45-year-old patient with severe liver disease showed a decreased response to atracurium. The possible causes of resistance to atracurium are discussed. We conclude that atracurium may be used in patients with severe hepatic disease. PMID- 3838696 TI - Results of a pilot study for the treatment of childhood acute nonlymphoblastic leukemia. AB - Eighteen children with acute nonlymphoblastic leukemia were entered on a pilot protocol. The drugs used were vincristine, daunorubicin, cytosine arabinoside, and prednisolone for remission induction, high-dose cyclophosphamide together with vincristine and mercaptopurine for consolidation, and cycles of vincristine, prednisolone, mercaptopurine, methotrexate, and daunorubicin for maintenance therapy. Prophylactic central nervous system therapy (cranial radiotherapy 2400 rad and intrathecal methotrexate 10 mg/m2 for five doses) was given once remission had been achieved. Fourteen of the 18 children (78%) achieved complete remission (CR) and 50% of those achieving CR remain in CR for 35+ to 87+ months. Survival for all children ranges from 2 to 88+ months with 50% remaining alive for 36+ to 88+ months. The protocol was well tolerated with minimal side effects. These results together with those of other recently reported studies indicate an improving prognosis for acute nonlymphoblastic leukemia in childhood. PMID- 3838697 TI - Chromosome changes in a secondary lymphoma. AB - A case of probable secondary lymphoma, poorly differentiated lymphocytic lymphoma (PDLL), is described in which two chromosomal translocations were observed, i.e., t(10;19)(q11;q13) and t(1;6)(q21;p11.1-2). A consistent numerical aberration was monosomy of chromosome #21. Accumulation of more data on secondary lymphomas is necessary in order to reach a general conclusion as to whether or not there are any nonrandom chromosomal aberrations that differentiate primary from secondary lymphomas. PMID- 3838698 TI - Aplysia neurons express a gene encoding multiple FMRFamide neuropeptides. AB - The neuroactive peptide Phe-Met-Arg-Phe-NH2 (FMRF-amide) has a variety of effects on both mammalian and invertebrate tissues; moreover, FMRFamide-like immunoreactivity is found throughout the animal kingdom. Here we describe the isolation and characterization of a cDNA clone from an Aplysia abdominal ganglion cDNA library that encodes a precursor protein that may give rise to as many as 19 individual FMRFamide peptides. Nearly all of the FMRF sequences are flanked on the amino terminus by Lys-Arg residues and on the carboxy terminus by Gly-Lys residues, suggesting that the single lysine residues function to signal cleavage by processing enzymes. The gene is present in a single copy per haploid genome and gives rise to multiple transcripts, at least some of which appear to arise through alternate RNA splicing. Immunohistochemical analysis suggests that the peptide is present in many neurons throughout the Aplysia nervous system and that these neurons send processes to a variety of different tissues. PMID- 3838699 TI - Expression of class I genes in the major histocompatibility complex: identification of eight distinct mRNAs in DBA/2 mouse liver. AB - The mouse H-2 multigene family includes the genes coding for the major transplantation antigens and for genes located in the Qa-TIa region. We have studied a collection of class I cDNA clones made from liver mRNA of DBA/2 mice (H 2d haplotype) and found that at least six distinct class I genes are transcribed, including three genes of the Qa-TIa region. Two of these six genes each yield two distinct mRNAs, resulting from alternate splicing. Altogether, liver cells may express at least eight distinct class I polypeptides, of which three might be secreted, while one may be a new presumptive nonpolymorphic surface antigen. PMID- 3838700 TI - Overview and philosophy of knee injuries. AB - The problem of the injured knee has attracted thoughtful discussion over the years. A current review of changes in thinking and treatment relative to the meniscus, ligament injuries, the extensor mechanism, prosthetic ligaments, and rehabilitation is presented. PMID- 3838701 TI - Screening of athletic knee injuries. AB - The screening of athletic knee injuries requires a great deal of judgment and experience on the part of the physician. There are many gray areas with differences of opinion regarding methods of treatment by experts in the field. There is, however, unanimity of opinion regarding the necessity for immediate careful and thorough evaluation of injuries to the athlete's knee as well as prompt, appropriate treatment in order to prevent severe disability in the future. PMID- 3838702 TI - Current concepts of meniscal function and pathology. AB - The advantages of preserving the menisci are reduced degenerative changes and improved stability. At long-term follow-up, even arthroscopic partial meniscectomy in the anterior cruciate ligament-deficient knee results in more than twice the incidence of Fairbank's changes compared with a normal meniscus, stable meniscus tears left alone, or meniscus repair. PMID- 3838703 TI - Rationale for meniscus repair or excision. AB - A selective approach to meniscus lesions has evolved to replace the traditional approach of total meniscectomy for all tears. The rationale is to preserve as much functional meniscus tissue as possible in the hope of decreasing the risk of late degenerative sequelae and still relieve the symptoms associated with the meniscus tear. The principles that should be considered for the various treatment options of leaving certain tears alone, meniscus repair, partial meniscectomy, and total meniscectomy have been reviewed. The early to intermediate results of this selective approach are encouraging and warrant continuation of its use. It should be emphasized, however, that continuing follow-up studies are necessary to establish whether the primary goal of improving long-term results following meniscus surgery will be achieved. PMID- 3838704 TI - Reasonable expectations following arthroscopic surgery. AB - The primary determinant of the ultimate outcome of surgery is the nature of the underlying disease. The current applications of arthroscopic surgery to various disease entities are reviewed and the results that can reasonably be expected with each are summarized. As time goes on, the number of diseases that can be treated arthroscopically and the efficacy of treatment will continue to improve. PMID- 3838705 TI - Knee problems in children and adolescents. AB - It is important to recognize that there are differences in the spectrum of knee injuries that occur in childhood and adolescence and to always keep these in mind when examining the younger athlete. Constant vigilance for hip pathology presenting as knee pain is also necessary in this age group. As the tendency becomes greater for practitioners to become more specialized in treatment modalities (for example, arthroscopic surgeons, knee surgeons, and so forth), the likelihood of making preventable errors in the case of young athletes increases. The comprehensive care of the athlete and his or her injury is paramount, and one should be wary of the pressure to treat the youngster as one might the college or professional athlete in order to return him or her to sports more quickly. Serious injuries require time to heal and even more time for the patient to convalesce and undergo rehabilitation. PMID- 3838706 TI - Evidence for N-(deoxyguanosin-8-yl)-1-aminopyrene as a major DNA adduct in female rats treated with 1-nitropyrene. AB - [3H]1-Nitropyrene was administered at a dose of 25 mg/kg by i.p. injection to female Wistar rats. Animals were killed 24 h later and DNA was isolated from kidney, liver and mammary gland, enzymically hydrolysed and analysed by reverse phase h.p.l.c. A major adduct peak was detected in DNA from each of the three organs. Enzymic hydrolysates of DNA, which had been reacted in vitro with 1 nitropyrene in the presence of xanthine oxidase, were similarly analysed by h.p.l.c. One major adduct peak was obtained which had the same retention time as the in vivo product. Confirmatory evidence that the in vivo adduct and the in vitro adduct were structurally similar was obtained from the determination of the pH-dependent solvent partitioning profiles. Further, treatment of the in vivo adduct from liver, kidney or mammary gland DNA hydrolysates and the in vitro adduct with sodium hydroxide resulted in the formation of a more polar product which eluted earlier on h.p.l.c. This behaviour is consistent with scission of the imidazole ring of a deoxyguanosine adduct. The major DNA adduct formed in vitro following xanthine oxidase reduction of 1-nitropyrene has previously been identified by others as N-(deoxyguanosin-8-yl)-1-aminopyrene. The present data suggest that the in vivo 1-nitropyrene-DNA adduct has the same structure. PMID- 3838707 TI - Failure of the xanthine oxidase inhibitor allopurinol to limit infarct size after ischemia and reperfusion in dogs. AB - During the acute phase of myocardial ischemia, adenine nucleotides are degraded to nucleosides and bases, especially inosine and hypoxanthine. Simultaneously, xanthine dehydrogenase is converted to xanthine oxidase, an enzyme that converts hypoxanthine to xanthine, and xanthine to uric acid, producing a superoxide anion for each molecule of hypoxanthine or xanthine oxidized. To determine if free radicals via this enzymatic source contribute to cell death in myocardial ischemia, we determined whether allopurinol, an inhibitor of xanthine oxidase, could limit infarct size in a reperfusion preparation of myocardial infarction. The circumflex coronary artery of each of 34 dogs was occluded for 40 min, followed by reperfusion for 4 days. Infarct size then was measured by histologic methods and was related to major baseline predictors of infarct size, including anatomic area at risk and collateral blood flow. Infarct size was larger (NS) in the allopurinol (n = 8) than in the control (n = 11) group, a trend that was related to slightly higher (NS) collateral blood flow in the control group. We conclude that allopurinol has no beneficial effect in this preparation of experimental myocardial infarction. The results oppose the hypothesis that free radicals, produced via the xanthine oxidase reaction, are an important contributing factor in myocardial ischemic cell death. PMID- 3838708 TI - Evaluation of a benchtop capillary gas chromatograph-mass spectrometer for clinical toxicology. AB - We evaluated the Hewlett-Packard 5995B benchtop capillary gas chromatograph-mass spectrometer (GC-MS) for its ability to identify drugs commonly detected and (or) measured in the clinical toxicology laboratory. Initial experiments indicated that the instrument as originally configured, with an isolation valve between the gas chromatograph and mass spectrometer, was unsatisfactory for the identification of hypnotics-sedatives. However, with the capillary inserted directly into the ion source, we could detect 10 ng of these drugs on a total-ion chromatogram. The software programs cause the instrument to be highly automated. In terms of ease of operation and speed it was found suitable for use in a routine clinical laboratory. Chromatography of urine extracts on the capillary gas chromatograph-mass spectrometer yielded excellent resolution of parent compounds and metabolites (e.g., diphenhydramine together with approximately four metabolites and propoxyphene with four metabolites). However, the manufacturer's computer program used to evaluate the quality of the match between the experimental mass spectra and the 375 drug reference spectra was only moderately successful in identifying unknown compounds. The ability of this capillary GC-MS to identify most compounds with a high degree of confidence will be increased by enlarging the library to include more drugs and metabolites and by using a more reliable computerized matching program. PMID- 3838709 TI - Scintillation counting of radioactive phospholipids: influence of counting solutions. PMID- 3838711 TI - Serum levels of pregnancy associated alpha 2-glycoprotein (alpha 2-PAG) during pregnancy in autoimmune thyroid disease: relationship to disease activity. AB - Serum concentrations of pregnancy associated alpha 2-glycoprotein (alpha 2-PAG) were measured serially by an enzyme linked immunosorbent assay during 24 pregnancies in 18 patients with Graves' disease and four with Hashimoto's thyroiditis. During each trimester, alpha 2-PAG levels were significantly higher than in normal pregnant controls, matched for week of gestation. Patients showing remission of disease activity had progressively higher alpha 2-PAG levels throughout pregnancy than those with active disease. The data support the idea that alpha 2-PAG may play an important role in inducing and maintaining the clinical remissions observed in some women with autoimmune thyroid disease during pregnancy. PMID- 3838710 TI - Comparative effects of sodium ipodate and iodide on serum thyroid hormone concentrations in patients with Graves' disease. AB - Patients with thyrotoxic Graves' disease were treated daily for 10 d with 1 g sodium ipodate, an iodine rich X-ray contrast agent which impairs outer ring (5' ) deiodination of T4 to T3, or with 12 drops of a saturated solution of potassium iodide (SSKI). T4, T3 and reverse T3 (rT3) concentrations were measured before, during, and 5 and 10 d after the administration of each drug. SSKI therapy induced a decrease in the serum T4 concentration from 14.7 +/- 1.3 microgram/dl (mean +/- SE) to a nadir of 7.9 +/- 0.9 on days 9 and 10 of therapy, all values reaching the normal range by day 9; a decrease in the serum T3 concentration from 402 +/- 43 ng/dl to a nadir of 143 +/- 20 on day 10, remaining elevated in all patients until day 5 and decreasing into the normal range in all except one patient on days 9 and 10; and no change in the serum rT3 concentration. Serum T4 and T3 concentrations returned to baseline values 10 d after withdrawal of SSKI. In contrast sodium ipodate therapy induced only a modest decrease in the serum T4 concentration from 15.1 +/- 0.7 micrograms/dl to a nadir on day 9 of 11.3 +/- 1.0 and serum T4 remained above the normal range in most patients until day 8; a striking and rapid decrease (within 12 h) in ther serum T3 concentration from 340 +/- 36 ng/dl to mean values ranging from 79 to 85 during the last 5 d of therapy, with most values below the normal range during the last 3 d; and a marked increase in the serum rT3 concentration from 111 +/- 15 ng/dl to a peak value of 376 +/- 59 on day 5.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838713 TI - An algorithm to count the number of repeated patient data entries with B tree. AB - An algorithm to obtain the number of different values that appear a specified number of times in a given data field of a given data file is presented. Basically, a well-known B-tree structure is employed in this study. Some modifications were made to the basic B-tree algorithm. The first step of the modifications is to allow a data item whose values are not necessary distinct from one record to another to be used as a primary key. When a key value is inserted, the number of previous appearances is counted. At the end of all the insertions, the number of key values which are unique in the tree, the number of key values which appear twice, three times, and so forth are obtained. This algorithm is especially powerful for a large size file in disk storage. PMID- 3838712 TI - A BASIC computer program for evaluating the effect of sample distribution on the least-squares regression slope estimate. AB - Least-squares regression analysis is widely used in analytical method comparison studies even though model assumptions are typically violated. The advantages favoring the use of the least-squares technique, when applicable, are that its theoretical characteristics are thoroughly developed and the calculations are straightforward and universally known. In order to aid an investigator in determining whether or not the least-squares technique can be acceptably applied in a given method comparison situation, a BASIC computer program is developed that evaluates the bias of the least-squares slope estimate as a function of the precision characteristics of the analytical methods and the proposed sampling distribution for the method comparison experiment. PMID- 3838714 TI - Three-dimensional reconstruction from serial sections III. AUTOSCAN, a software package in FORTRAN for semiautomated photomicrography. AB - A FORTRAN program, called AUTOSCAN, is described. This program permits the collection of photomicrographic data from serial sections to be semiautomated. In essence the user defines a box around a microscopic field of interest. Then the program drives the stage incrementally in the x and y directions, taking photographs of contiguous subfields. The box is defined by the use of a joystick and the "return" key. That is, movements of a joystick cause the stage to translate in the x and y directions. When a corner of the object is reached, as defined by cross-hairs in the microscope eyepiece, the user hits the return key. Repetition of this process at each corner defines a "box" within which photographs are to be taken. AUTOSCAN then calculates the step size and the number of frames to be taken from the user-defined values for the magnification. The actual movements of the stage in the x and y directions and the photography are fully automated. Each frame of film has the x and y coordinates of the center of the subfield being photographed imprinted in one corner, along with other relevant data. The x and y coordinates permit the resultant information to be assembled correctly into a two-dimensional montage. PMID- 3838715 TI - A FORTRAN program for the design and analysis of sequential clinical trials. AB - Clinical scientists are becoming increasingly aware of the need to monitor clinical trials in progress, and to validate their procedure by the use of a formal sequential design. An interactive program, written in FORTRAN 77 and called "PEST: Planning and Evaluation of Sequential Tests," is introduced. The program can be used to design trials based on the sequential probability ratio test, the triangular test, and the restricted procedure, among others. Furthermore, from the observed terminal values of the test statistics, the program will provide an analysis which includes the significance level and point and interval estimates of the parameter of interest. The computations are based on large-sample theory which encompasses many types of patient response, including binary and ordinal outcomes as well as survival times. PMID- 3838716 TI - A nonlinear least-squares method for determining cerebrospinal fluid formation and absorption kinetics in pseudotumor cerebri. AB - Data from 14 patients with benign intracranial hypertension (pseudotumor cerebri) have been analyzed using a nonlinear least-squares regression model which was developed and programmed from in-hospital microcomputer use. The method of analysis permits rapid estimation of cerebrospinal fluid (CSF) formation and absorption rates as functions of pressure in individual patients using data from constant-rate infusion manometrics. The analysis predicts that prednisone therapy in pseudotumor cerebri reduces resting CSF pressure by increasing CSF absorption at all intracranial pressures studied, and decreasing CSF formation at high pressures. This result is in accordance with evidence suggesting that impaired CSF absorption plays a major role in the pathogenesis of increased intracranial pressure in pseudotumor cerebri. PMID- 3838717 TI - Postpartum atony of the small and large intestine in a Holstein cow: a case of pseudo-obstruction. AB - A four-year-old Holstein, 23 days postpartum, was presented with abdominal distention. Gas filled viscera were detected in the right paralumbar fossa and pelvic canal. Surgery revealed cecal and colonic distention and generalized intestinal atony. There was no other evidence of gross pathology. The condition deteriorated during five post-operative days. Gross postmortem findings were not remarkable; histopathology revealed ganglionitis of the cranial mesenteric ganglion and myenteric plexus. A brief review of relevant literature for a differential diagnosis and an etiology is discussed. PMID- 3838718 TI - [Nucleotide sequence of the 3'-nontranslated region of the mRNA of alpha S1 casein in cows]. PMID- 3838719 TI - [Chemotherapy of advanced lymphogranulomatosis. Results of MOPP/COPP treatment at the West German Tumor Center, Essen]. AB - Between 1968 and 1979, a total of 271 patients with advanced Hodgkin's disease received as first systemic chemotherapy MOPP (mechlorethamine [nitrogen mustard], oncovin [vincristine], procarbazine and prednisone) or COPP (as above, but cyclophosphamide instead of nitrogen mustard). In 162 of the 271 patients (60%) full remission was achieved. Demonstration of systemic signs, bioptically confirmed bone-marrow infiltration and suboptimal cytostatic dosage correlated significantly with a lower full-remission rate. A significant trend towards a lower remission rate was demonstrated for stage IV disease, in patients with lymphocyte-poor or unclassified Hodgkin's disease and in those older than 30 years. A five-year recurrence-free period was achieved in 75.5% of patients: stage of the disease and bone-marrow infiltration had a clear influence on recurrence-free survival rate. The results show that 50% of patients with advanced Hodgkin's disease can be cured by chemotherapy. PMID- 3838720 TI - Role of myoinositol in regulation of surfactant phospholipids in the newborn. AB - According to animal studies myoinositol decreases surfactant phosphatidylglycerol and increases phosphatidylinositol. In the present study lung effluent phospholipids and serum myoinositol were analyzed in respiratory distress syndrome (RDS, 19 cases), in other lung disease (6 cases) and in 22 newborn with no lung disease. In addition, myoinositol was studied in amniotic fluid and in serum from umbilical vessels and from maternal vein (15 healthy newborn). There was a significant correlation between the fetal and amniotic fluid levels of myoinositol, but no detectable correlation between fetal and maternal myoinositol. Serum myoinositol was higher in preterm than in term newborns. In healthy newborns there was a negative correlation between lung effluent phosphatidylglycerol (expressed as percent of the phospholipids) and serum myoinositol (r = -0.968), and a positive linear correlation between myoinositol and lung effluent phosphatidylinositol (r = 0.849). In RDS at birth, undetectable phosphatidylglycerol corresponded with high serum myoinositol. During the first 5 neonatal days serum myoinositol either (1) decreased and phosphatidylglycerol appeared, (2) remained high and phosphatidylglycerol correspondingly low in some small preterm infants, or (3) decreased but phosphatidylglycerol did not expectedly increase and disaturated lecithin/sphingomyelin ratio remained low in other small preterm babies. We propose that a premature decrease in serum myoinositol among small preterm infants with RDS is not beneficial, since myoinositol may promote hormone-induced lung maturation and healing of lung damage. PMID- 3838721 TI - Effect of ivermectin on equine blood constituents. PMID- 3838722 TI - Alimentary lymphosarcoma in a horse with cutaneous manifestations. PMID- 3838723 TI - Nucleotide sequence of cloned cDNA coding for preproricin. AB - The primary structure of a precursor protein that contains the toxic (A) and galactose-binding (B) chains of the castor bean lectin, ricin, has been deduced from the nucleotide sequence of cloned DNA complementary to preproricin mRNA. A cDNA library was constructed using maturing castor bean endosperm poly(A)-rich RNA enriched for lectin precursor mRNA by size fractionation. Clones containing lectin mRNA sequences were isolated by hybridization using as a probe a mixture of synthetic oligonucleotides representing all possible sequences for a peptide of the ricin B chain. The entire coding sequence of preproricin was deduced from two overlapping cDNA clones having inserts of 1614 and 1049 base pairs. The coding region (1695 base pairs) consists of a 24-amino-acid N-terminal signal sequence (molecular mass 2836 Da) preceding the A chain 267 amino acids, molecular mass 29 399 Da), which is joined to the B chain (262 amino acids, molecular mass 28 517) by a 12-amino-acid linking region (molecular mass 1385 Da). PMID- 3838724 TI - Purification and analysis of phospholipids in the inner mitochondrial membrane fraction of bovine corpus luteum, and properties of cytochrome P-450scc incorporated into vesicles prepared from these phospholipids. AB - Cytochrome P-450scc, which catalyses the conversion of cholesterol to pregnenolone in steroidogenic tissues, can be incorporated into artificial phospholipid vesicles and cholesterol binding to the cytochrome is affected by the composition of the vesicles. We have purified the phospholipids from the inner mitochondrial membrane fraction of the bovine corpus luteum where the cytochrome is located. The composition in mol % was 49% phosphatidylcholine, 34% phosphatidylethanolamine, 8.7% cardiolipin, 6.4% lysophosphatidylethanolamine and 1.5% phosphatidylinositol. The ratio of cholesterol to phospholipid (mol/mol) in the inner membrane fraction was 0.14 to 1. The Km for cholesterol of purified luteal cytochrome P-450scc incorporated into vesicles prepared from the total inner mitochondrial membrane phospholipids was 0.063 mol of cholesterol per mol of phospholipid. Removal of the cardiolipin component of the inner mitochondrial membrane phospholipids prior to preparation of vesicles caused a four fold increase in the Kd of cytochrome P-450 for cholesterol and a two fold increase in Km. The data suggests that in the inner mitochondrial membrane of the bovine corpus luteum the cholesterol concentration is less than saturating for cytochrome P-450scc. PMID- 3838725 TI - Combination of metoprolol with molsidomine in the treatment of angina pectoris. AB - In a randomized controlled trial 31 patients, who were unsuccessfully being treated with metoprolol for severe angina pectoris, were also given molsidomine or placebo. During an exercise test, there was no difference between the groups in heart rate or blood pressure. There was a tendency towards a mild, significant improvement in exercise performance in the molsidomine-treated group, in whom both workload and exercise duration increased after two weeks of treatment. In the placebo-treated group, these parameters decreased. PMID- 3838726 TI - Electrophysiologic effects of AHR 10718 on isolated cardiac tissues. AB - We used microelectrode and blood superfusion techniques to study the electrophysiologic effects of a new antiarrhythmic compound, AHR 10718 (N'-(2 (diethylamino)ethyl)-N-(1-methylethyl)-N-(2-(phenylsulfonyl )ethyl)urea,(Z) butanedioate) on the electrophysiologic properties of canine Purkinje fibers and papillary muscles. AHR 10718 (greater than or equal to 5 X 10(-6) M) induced a use-dependent decrease in Vmax and significantly decreased Purkinje fiber conduction velocity and action potential duration. In addition, membrane responsiveness was depressed and the effective refractory period shortened. The effects of AHR 10718 were not highly dependent on [K+]0. Vmax of ventricular muscle action potentials also was reduced. However, in contrast to Purkinje fibers, ventricular muscle action potentials were significantly prolonged by AHR 10718 (greater than or equal to 5 X 10(-6) M). AHR 10718 had no effect on slow response action potentials induced by isoproterenol and high [K+]0. AHR 10718 significantly decreased normal automaticity, catecholamine-enhanced automaticity, and abnormal automaticity induced by barium or myocardial infarction. It also suppressed triggered activity and reduced delayed afterdepolarization amplitude in ouabain-treated Purkinje fibers and infarcted myocardium. These studies suggest that AHR 10718 may be effective against arrhythmias resulting from conduction disturbances and certain forms of abnormal impulse initiation. PMID- 3838727 TI - Hemoglobin Roseau-Pointe a Pitre alpha 2 beta 2(90) (F6) Glu----Gly: a new hemoglobin variant with slight instability and low oxygen affinity. AB - A Dominican neonate carrying a new abnormal hemoglobin, hemoglobin Roseau Pointe a-Pitre alpha 2 beta 2(90)(F6) Glu----Gly, was detected in Guadeloupe during application of a cord blood screening program. This variant behaved in isoelectrofocusing as an Hb D, and displayed instability and low whole blood oxygen affinity. In the affected family it was present, either isolated, or in association with a beta+ thalassemia trait. PMID- 3838728 TI - Seminal prolactin concentration and sperm reproductive capacity. AB - Prolactin (PRL) levels in the seminal plasma were determined in 63 men, all partners from infertile marriages. For comparison of seminal PRL concentration and semen quality, a sperm concentration and motility were studied in all men. Also, for determination of the fertilizing capacity of the semen, a zona-free hamster ovum penetration test was done in 49 men, while 14 men were studied by determination of the fertilization of human oocytes in vitro. Significantly higher levels of semen PRL were found in those individuals with low sperm concentration and motility as well as in those individuals that showed an abnormal hamster ovum penetration test. This suggests that high seminal PRL levels have a negative impact on sperm functional capacity. PMID- 3838729 TI - [Genetic control of riboflavin biosynthesis in Pichia guilliermondii yeasts. The detection of a new regulator gene RIB81]. AB - The properties of mutants resistant to 7-methyl-8-trifluoromethyl-10-(1'-D ribityl)-isoalloxazine (MTRY) were studied. The mutants were isolated from a genetic line of Pichia guilliermondii. Several of them were riboflavin overproducers and had derepressed flavinogenesis enzymes (GTP cyclohydrolase, 6.7 dimethyl-8-ribityllumazine synthase) in iron-rich medium. An additional derepression of these enzymes as well as derepression of riboflavin synthase occurred in iron-deficient medium. The characters "riboflavin oversynthesis" and "derepression of enzymes" were recessive in mutants of the 1st class, or dominant in those of the 2nd class. The hybrids of analogue-resistant strains of the 1st class with previously isolated regulatory mutants ribR (novel designation rib80) possessed the wild-type phenotype and were only capable of riboflavin overproduction under iron deficiency. Complementation analysis of the MTRY resistant mutants showed that vitamin B2 oversynthesis and enzymes' derepression in these mutants are caused by impairment of a novel regulatory gene, RIB81. Thus, riboflavin biosynthesis in P. guilliermondii yeast is regulated at least by two genes of the negative action: RIB80 and RIB81. The meiotic segregants which contained rib80 and rib81 mutations did not show additivity in the action of the above regulatory genes. The hybrids of rib81 mutants with natural nonflavinogenic strain P. guilliermondii NF1453-1 were not capable of riboflavin oversythesis in the iron-rich medium. Apparently, the strain NF1453-1 contains an unaltered gene RIB81. PMID- 3838730 TI - [Antimicrobial woolen fabrics as a means of preventing and treating skin diseases]. PMID- 3838731 TI - Release of glucagon-like immunoreactive material (GLI) from the isolated perfused jejunum of normal and diabetic rats. PMID- 3838732 TI - Effect of dietary calcium and phosphorus depletion on vitamin D metabolism and calcium binding protein in the growing pig. AB - Twenty-four young pigs were divided into three groups and each fed a replete, low calcium (Ca) or low phosphorus (P) diet. It was found that the deficient diets induced rises in renal 25 hydroxy-vitamin D 1,hydroxylase (1-hydroxylase) activity, circulating 1,25 dihydroxy-vitamin D3 (1,25 (OH)2-D3) and Ca binding protein (CaBP) and intestinal 1,25(OH)2D3 and CaBP. All these rises were statistically significant in the low Ca group but only the rises in the 1 hydroxylase activity and intestinal 1,25(OH)2D3 were significant in the low P group. A high degree of correlation existed between the parameters. There was no enhancement of intestinal 1,25(OH)2D3 or CaBP concentration relative to the 1 hydroxylase activity in the low P pigs as occurs in the chick. The low-P-induced rise in 1-hydroxylase activity was independent of parathyroid hormone. PMID- 3838735 TI - Acceptance testing--the critical problem in software acquisition. PMID- 3838734 TI - A software package for design and manufacture of prosthetic sockets for transtibial amputees. PMID- 3838733 TI - Further segregation analysis of the fragile X syndrome with special reference to transmitting males. AB - A new series of 96 pedigrees with the fra(X) syndrome was analysed using complex segregation analysis with pointers, defining affection as any degree of mental impairment. These families were found to exhibit the same segregation pattern as the first series of 110 pedigrees (Sherman et al. 1984). The best estimate for penetrance of mental impairment in males was 79% and in females was 35% for the combined data. Again, there was little evidence for sporadic cases among affected males. Many more intellectually normal transmitting males have been observed since the existence of such males and the concomitant need to investigate the paternal side of pedigrees was recognized. On further investigation of all 206 pedigrees from the old and new data sets, the sibships of nonexpressing males appeared to be different from those of expressing males. Our analysis, using mental impairment as the phenotype, suggested that obligate carrier mothers and daughters of intellectually normal transmitting males are rarely, if ever, mentally impaired and that the sibs of transmitting males are much less likely to be retarded than the sibs of mentally impaired males. Though mothers and daughters of transmitting males are similar in phenotype, the expression of the gene in their offspring appears to be different: the penetrance of mental impairment is higher in offspring of intellectually normal daughters of transmitting males than in offspring of intellectually normal mothers of transmitting males. The implications of these observations for genetic counseling and for genetic models of the fra(X) syndrome are discussed. PMID- 3838736 TI - Acute rickettsial myocarditis and advanced atrioventricular block: diagnosis and treatment aided by endomyocardial biopsy. AB - A case of acute advanced atrioventricular block in a young patient is described. An endomyocardial biopsy performed to confirm myocarditis showed findings compatible with rickettsial endomyocarditis. Treatment with tetracycline was therefore started and a rapid remission of the atrioventricular block was observed. Healing of the disease was subsequently documented by a second endomyocardial biopsy. The rickettsial etiology was confirmed by the results of serial serum titers against Proteus OX-19. Endomyocardial biopsy may be clinically indicated for the diagnosis of advanced atrioventricular block in young patients and may help in their optimal treatment. PMID- 3838737 TI - Plasma kinetics and effects of 5,6-dihydro-5-azacytidine in mice and L1210 tumor. AB - The plasma kinetics of 5,6-dihydro-5-azacytidine (DHAC) was determined in mice using an HPLC method following an intravenous dose of 2000 mg/kg (LD10). Pharmacokinetic parameters calculated from these single dose data were sufficient to predict steady state plasma concentrations produced by s.c. infusion of DHAC. Lethal toxicity (LD66) occurred at an infusion rate of 37 mg/kg/h (111mg/m2/h), corresponding to a plasma steady-state DHAC concentration 38 +/- 14 micrograms/ml when the infusion time was 96 h; no lethality occurred at infusion times of 72 h or less. In vitro clonogenic assays and in vivo therapeutic experiments with L1210 tumor indicated that increasing the exposure time at concentrations near 25 micrograms/ml from 24 to 72 h increased the cell kill only slightly. The maximum log cell kill of L1210 estimated from either in vitro or in vivo data was 1.5 logs. PMID- 3838738 TI - Stability of 2,5-diaziridinyl-3,6-bis(2-hydroxyethylamino)-1,4-benzoquinone (BZQ; NSC 224070) in aqueous solutions by high-performance liquid chromatography. AB - The stability of the potential antitumour agent 2,5-diaziridinyl-3,6-bis(2 hydroxyethylamino)-1,4-benzoquinone (BZQ; NSC 224070) has been investigated by high-performance liquid chromatography. At 22 degrees C in 0.05M buffer, BZQ was most stable at pH 9 with an apparent first-order rate constant (k) of about 0.014 h-1. There was reduced stability at pH values above and below 9.0. At a pH of 3 and 12 the values of k were 38 and 0.3 h-1, respectively. Stability of BZQ was adversely affected by increased temperatures (above 0 degrees C), increased buffer concentration and light. Solutions of BZQ could not be frozen for any length of time, as the drug precipitated out in a form that would not redissolve (possibly a polymer). For parenteral administration to patients, it is suggested that BZQ would be most stable in 1.26% sodium bicarbonate solution when at room temperature, under normal laboratory lighting, 5% of the drug degraded (t0.95) in 5.5 h. Increased stability is obtainable in this medium by refrigeration and vigorous exclusion of light. Long term (24 h) infusions of BZQ could be considered in hypotonic sodium bicarbonate (30 mM) with careful exclusion of light as long as the volume of the infusion was small, e.g. 1 ml/h. Under these conditions t0.95 was 42 h at 21.5 degrees C. PMID- 3838739 TI - Transient laryngeal nerve paralysis accompanying Hashimoto's thyroiditis. PMID- 3838740 TI - A program for adding and subtracting refractive powers with oblique crossed cylinders. AB - A microcomputer program that calculates the sum or the difference of two refractions with oblique crossed cylinders is described. The program can be used to calculate the total dioptric change induced in the cornea at the time of surgery or suture removal. PMID- 3838742 TI - Effect of dietary phosphorus levels on porcine renal 25-hydroxyvitamin D-1 alpha- and 24R-hydroxylase activities and plasma 1,25-dihydroxyvitamin D3 concentration. AB - Results of studies on the effect of dietary P deprivation on pig renal 1 alpha- and 24-hydroxylase activities and on concentrations of plasma alkaline phosphatase, Ca, P and vitamin D metabolites are presented. Renal 1 alpha hydroxylase activity was increased six- to eightfold and plasma 1,25 dihydroxyvitamin D3 concentration increased two- to threefold in pigs fed a low P diet (.085% P) compared with pigs fed a control diet (.6% P). In contrast, renal 24-hydroxylase activity and plasma 25-hydroxyvitamin D concentration did not differ between diet groups. Plasma alkaline phosphatase activity was two to four times higher in pigs fed the low P diet compared with pigs fed the control diet. The rate of gain by pigs fed the low P diet was less than pigs fed the control diet. The low P diet was associated with a prolonged elevation of renal 1 alpha hydroxylase activity in spite of the presence of a pronounced hypercalcemia. PMID- 3838741 TI - Effects of white blood cells on the in vitro penetration of zona-free hamster eggs by human spermatozoa. AB - The presence of white blood cells in semen has been associated with male infertility. Previous studies indicate that pyospermia occurs in conjunction with decreases in sperm motility, number of normal sperm forms, and penetration rates in the zona-free hamster egg sperm penetration assay. We have evaluated the relationship of seminal white blood cells and sperm function, as reflected in the zona-free hamster egg penetration assay, and have investigated the possible mode of action of the white cells. Egg penetration rates decreased when white blood cells from fertile or potentially fertile donors were added to their sperm suspensions prior to preincubation and at insemination in the in vitro assay. Zona-free hamster egg penetration assay results were also inhibited when the supernatant from white blood cells incubated in Biggers, Whitten, and Whittingham (BWW) medium overnight were introduced to sperm-oocyte suspensions at insemination. Conversely, egg penetration rates were enhanced in samples from hypofertile individuals when white blood cell concentrations in the semen or WBC/sperm ratios were reduced, either by physical removal or as a result of antibiotic therapy. The physical presence of leukocytes, and possibly, the extracellular release of lysosomal enzymes may be responsible for the inhibitory effects in vitro. Although the mechanism(s) by which white blood cells interfere with the fertilizing capacity of spermatozoa are not clear, it is quite obvious that their presence in the in vitro environment is undesirable and can mask an individual's actual fertilizing potential. PMID- 3838743 TI - Central and peripheral causes of hyperreflexia in humans breathing 5% trimix at 650 m. AB - To clarify the mechanism of increased stretch reflex responsiveness in deep divers (hyperbaric hyperreflexia), comparative studies of stretch (T) and Hoffmann (H) reflexes were done on three men breathing 5% N2-0.5 bar O2-balance He at pressures up to 650 m of seawater (msw) (Atlantis IV simulated dive, F.G. Hall Laboratory, Duke Medical Center). Electromyography revealed increases at depth of up to 160% in the T reflex recruitment ratio (T reflex/Mmax) compared with surface controls. The H reflex recruitment ratio (Hmax/Mmax) did not change significantly. It is concluded that hyperbaric hyperreflexia is mainly due to increased muscle spindle sensitivity, presumably arising as a central effect on gamma-motoneuron activity. However, a purely peripheral effect of pressure on the spindle end-organ itself is not ruled out. Increases of 100-200% in muscle twitch peak force are reported and provide evidence that pressure can act directly on peripheral physiology. Postreflex clonic potentials (rebounds) during voluntary plantar flexion were significantly increased both in amplitude and number, leading to sustained clonus in one subject. In this respect, 5% N2 was less effective than 10% N2 of Atlantis III in controlling underdamping of the reflex loop. Conversely, the twitch contraction rate and clonic frequency in this study were only half as slowed compared with results from the earlier dive. PMID- 3838744 TI - Mechanisms of interaction between oxygen and granulocytes in hyperoxic lung injury. AB - Hyperoxia and infused granulocytes act synergistically in producing a nonhydrostatic high-permeability lung edema in the isolated perfused rabbit lung within 4 h, which is substantially greater than that seen with hyperoxia alone. We hypothesized that the interaction between hyperoxia and granulocytes was principally due to a direct effect of hyperoxia on the lung itself. Isolated perfused rabbit lungs that were preexposed to 2 h of hyperoxia (95% O2-5% CO2) prior to the infusion of unstimulated granulocytes (under normoxic conditions) developed significant nonhydrostatic lung edema (P = 0.008) within 2 h when compared with lungs that were preexposed to normoxia (15% O2-5% CO2) prior to granulocyte perfusion. The edema in the hyperoxic-preexposed lungs was accompanied by significant increases in bronchoalveolar lavage (BAL) protein, BAL granulocytes, BAL thromboxane and prostacyclin levels, perfusate chemotactic activity, and lung lipid peroxidation. These findings suggest that the synergistic interaction between hyperoxia and granulocytes in producing acute lung injury involves a primary effect of hyperoxia on the lung itself. PMID- 3838745 TI - Performance characteristics of methods of analysis used for regulatory purposes. I. Drug dosage forms. D. High pressure liquid chromatographic methods. AB - Precision parameters of high pressure liquid chromatographic methods approved by AOAC for the analysis of drug dosage forms were recalculated on a consistent statistical basis, using the computer program "FDACHEMIST." Eleven collaborative studies of 12 compounds in 66 dosage forms analyzed by an average of 9 laboratories per study, with a total of 1150 determinations, were reviewed. For the approved methods and methods awaiting approval (9 studies, 11 compounds, 54 dosage forms, and 959 determinations), the average repeatability relative standard deviation (within-laboratory; RSDo) was 1.0%; reproducibility relative standard deviation (among-laboratories, including within-; RSDx) was 2.5%; the ratio RSDo/RSDx was an unusually low 0.40, with an average outlier rate of 0.6% of the reported values. The line of best fit for RSDx plotted against - log concentration increases with decreasing concentration, extending approximately from RSDx = 2% at 100% concentration to RSDx = 3.6% at 0.01% concentration, a change in RSDx of about 0.4% for each 10-fold decrease in concentration, independent of analyte and matrix. PMID- 3838746 TI - Analysis of several bovine lutropin beta subunit cDNAs reveals heterogeneity in nucleotide sequence. AB - Several, independent lutropin beta subunit cDNA clones have been isolated from a lambda gt-11 pituitary cDNA library. The complete nucleotide sequence of four clones was determined. A number of single nucleotide differences were detected including three changes within the coding sequence. One of these nucleotide changes resulted in a change in the predicted amino acid sequence, while two did not. These changes may reflect heterogeneity in the animals from which pituitaries were obtained, or they may reflect errors which occurred during the construction or cloning of the cDNA. Two other differences in nucleotide sequence suggest differences in the processing of precursor mRNAs. One difference involves the deletion of three nucleotides from the coding sequence of one of the clones. This probably reflects the use of alternate splicing sites at intron-exon boundaries. The other likely processing difference is reflected by the fact that one of the clones contains a much longer 3' untranslated region than the other clones. This difference probably arose due to a single nucleotide difference leading to selection of an alternate polyadenylation site. PMID- 3838747 TI - Bilin attachment sites in the alpha, beta, and gamma subunits of R-phycoerythrin. Structural studies on singly and doubly linked phycourobilins. AB - Three unique bilin peptides, a beta subunit peptide bearing a doubly linked phycourobilin (PUB), and two gamma subunit peptides with singly linked PUB groups, were obtained by enzymatic degradation of Gastroclonium coulteri R phycoerythrin. These peptides were shown to have the sequences (Klotz, A. V., and Glazer, A. N. (1985) J. Biol. Chem. 260, 4856-4863): (Formula: see text) The sequence of peptide beta-3T was identical to that previously established for a doubly linked phycoerythrobilin (PEB) peptide derived from a B-phycoerythrin (Lundell, D. J., Glazer, A. N., DeLange, R. J., and Brown, D. M. (1984) J. Biol. Chem. 259, 5472-5480). Secondary ion mass spectrometry of beta-3T yielded a protonated molecular ion of 1629 mass units, the same as that given by the doubly linked PEB peptide (Schoenleber, R. W., Lundell, D. J., Glazer, A. N., and Rapoport, H. (1984) J. Biol. Chem. 259, 5481-5484), indicating that the doubly linked PUB and PEB tetrapyrroles were isomeric structures. High resolution 1H NMR analyses of peptides beta-3T, gamma-BV8, and gamma-DP provided unambiguous structural assignments for the singly and doubly linked PUB chromophores and indicated that the peptides in gamma-BV8 and gamma-DP were linked to ring A. The determination of which peptide fragment is linked to ring A and which to ring D in peptide beta-3T was not achieved in this study. 1H NMR analyses of three PEB peptides from G. coulteri R-phycoerythrin--alpha-1 Cys(PEB)-Tyr-Arg, alpha-2 Leu Cys(PEB)-Val-Pro-Arg, and beta-1 Met-Ala-Ala-Cys(PEB)-Leu-Arg--showed that they were identical to previously described corresponding chromopeptides from Porphyridium cruentum B-phycoerythrin, with the peptide linked to ring A of PEB in each instance (Schoenleber, R. W., Lundell, D. J., Glazer, A. N., and Rapoport, H. (1984) J. Biol. Chem. 259, 5485-5489). This is the first documented report on the structure of singly or doubly linked phycourobilins. PMID- 3838748 TI - 1 alpha,25-Dihydroxyvitamin D-induced modification of a cytosolic protein in embryonic chick intestine. AB - Two-dimensional electrophoresis together with radiolabeling experiments was used to examine cytosolic proteins of embryonic chick duodenum for responses to 1,25 dihydroxyvitamin D3. 1,25-Dihydroxyvitamin D3 caused a striking decrease in [3H]leucine content of an 18,000-dalton protein (approximate pI, 5.1) after a 10 min pulse with radioisotope followed by a 4-h chase. Decreased [14C]leucine content of the same protein was also observed at various times following 1,25 dihydroxyvitamin D3 addition to culture media; a significant decrease in radiolabel incorporation occurred within 30 min after addition of the hormone. The results argue that 1,25-dihydroxyvitamin D3 causes either a decreased synthesis rate or a post-translational modification of this protein. This change joins the biosynthesis of calcium-binding protein as an early event in the response of chick embryonic intestine to 1,25-dihydroxyvitamin D3. PMID- 3838749 TI - Translational control of the circadian rhythm of liver sterol carrier protein. Analysis of mRNA sequences with a specific cDNA probe. AB - The striking changes in amount of rat liver SCP (sterol carrier protein) during a 24-h dark-light cycle are due to alterations in the relative synthetic rate of SCP. However, functional SCP mRNA, measured by a cell-free translational assay, does not fluctuate in the dark-light cycle. Since cell-free translational assays do not always reflect the actual abundance of an mRNA molecule, a specific cDNA hybridization assay was used to directly quantitate SCP mRNA sequences. The cDNA probe was selected from a rat liver library by hybridization to a mixture of synthetic oligonucleotides containing a portion of the sequence of SCP mRNA. The relative amount and size distribution of the SCP mRNA species (approximately 700 800 nucleotides) does not change during the diurnal cycle. To explore possible mechanisms of this translational control, the polysomal distribution of SCP mRNA was compared at the maximum and minimum points of SCP synthesis. No significant amounts of SCP mRNA were present in nonpolysomal ribonucleoprotein particles. Furthermore, no alteration in the relative level of SCP mRNA associated with polysomes or in polysome size occurs at the maximum and minimum points of SCP synthesis. Thus, changes in total SCP mRNA levels or its polysomal distribution cannot account for the diurnal variation in SCP synthesis. PMID- 3838750 TI - Molecular cloning of DNA sequences complementary to rat liver glucose-6-phosphate dehydrogenase mRNA. Nutritional regulation of mRNA levels. AB - The nutritional regulation of rat liver glucose-6-phosphate dehydrogenase was studied using a cloned DNA complementary to glucose-6-phosphate dehydrogenase mRNA. The recombinant cDNA clones were isolated from a double-stranded cDNA library constructed from poly(A+) RNA immunoenriched for glucose-6-phosphate dehydrogenase mRNA. Immunoenrichment was accomplished by adsorption of polysomes with antibodies directed against glucose-6-phosphate dehydrogenase in conjunction with protein A-Sepharose and oligo(dT)-cellulose chromatography. Poly(A+) RNA encoding glucose-6-phosphate dehydrogenase was enriched approximately 20,000-fold using these procedures. Double-stranded cDNA was synthesized from the immunoenriched poly(A+) RNA and inserted into pBR322 using poly(dC)-poly(dG) tailing. Escherichia coli MC1061 was transformed, and colonies were screened for glucose-6-phosphate dehydrogenase cDNA sequences by differential colony hybridization. Plasmid DNA was purified from clones which gave positive signals, and the identity of the glucose-6-phosphate dehydrogenase clones was verified by hybrid-selected translation. A collection of glucose-6-phosphate dehydrogenase cDNA plasmids with overlapping restriction maps was obtained. Northern blot analysis of rat liver poly(A+) RNA using nick-translated, 32P-labeled cDNA inserts revealed that the glucose-6-phosphate dehydrogenase mRNA is 2.3 kilobases in length. RNA blot analysis showed that refeeding fasted rats a high carbohydrate diet results in a 13-fold increase in the amount of hybridizable hepatic glucose-6-phosphate dehydrogenase mRNA which parallels the increase in enzyme activity. These results suggest that the nutritional regulation of hepatic glucose-6-phosphate dehydrogenase occurs at a pretranslational level. PMID- 3838752 TI - Pattern of steroid interaction with inducers of aryl hydrocarbon hydroxylase activity in several cloned estradiol-responsive stromal cell strains from mouse endometrium. AB - Several steroid responsive stromal cell strains were isolated from normal mouse endometrium. Both estrogen responsive and progesterone responsive strains were obtained. The estrogen responsive cells were also responsive to diethylstilbestrol (DES). The progesterone responsive strains were inhibited by estrone and estriol. One of the estrogen responsive cell strains, E041, was cloned in the presence and absence of 17-beta-estradiol (E2). Of 14 clones developed in the absence of E2 and screened for responsivity of growth, six were significantly responsive to E2. Six of 26 clones developed in the presence of E2 were responsive to E2. Microsomes isolated from these clones were shown to have aryl hydrocarbon hydroxylase (AHH) activity which was inducible with either benzanthracene (BA) or 2,3,7,8 tetrachlorodibenzo-p-dioxin (TCDD). The basal levels of AHH activity were significantly reduced by E2 in E2 responsive clones. The TCDD induced levels of AHH activity in the E2 responsive and E2 non responsive clones were significantly reduced by E2. The BA induced levels of AHH were significantly increased by E2 in one of the clones. These results show that mouse endometrial stroma consists of a number of populations of cells with different specific proliferative and metabolic responses to steroids. PMID- 3838751 TI - Anion transporter: highly cell-type-specific expression of distinct polypeptides and transcripts in erythroid and nonerythroid cells. AB - Affinity-purified antibodies and cDNA probes specific for the chicken erythrocyte anion transporter (also referred to as band 3) have been used to demonstrate that this protein is expressed in a highly cell-type-specific manner in the avian kidney. Indirect immunofluorescence analysis indicates that this polypeptide is present in only a small subset of total kidney cells and is predominantly localized to the proximal convoluted tubule of this organ. Chicken erythrocytes synthesize and accumulate two structurally and serologically related band 3 polypeptides. The polypeptide that accumulates in kidney membranes has an apparent molecular weight greater than either of its erythroid counterparts. This diversity is also reflected at the RNA level, as the single band 3 mRNA species detected during various stages of erythroid development is distinct in size from that found in kidney cells. Genomic DNA blot analysis suggests that both the erythroid and kidney band 3 RNAs arise from a single gene. Furthermore, of the adult tissues we have examined that are known to express ankyrin and spectrin polypeptides, only kidney accumulates detectable levels of the band 3 mRNA and polypeptide. These observations suggest that a subset of kidney cells use an anion transport mechanism analogous to that of erythrocytes and that band 3 is expressed in a noncoordinate manner with other components of the erythroid membrane skeleton in nonerythroid cells. PMID- 3838753 TI - Membrane-cytoskeleton interactions and the regulation of chemotactic peptide induced activation of human granulocytes: the effects of dihydrocytochalasin B. AB - When N-formyl chemotactic peptides bind to granulocyte receptors at 37 degrees C they rapidly form a high-affinity ligand-receptor complex whose coisolation with cytoskeletal residues of Triton X-100-extracted cells is under cellular control [Jesaitis et al: J Cell Biol 98:1378, 1984]. Experiments were performed to investigate the significance of this coisolation. When the granulocytes were preincubated with dihydrocytochalasin B (dhCB) for 10 min at 37 degrees C and then stimulated with 50 nM N-formyl-Met-Leu-[3H]Phe, the rate of uptake of the radioligand by the cells was inhibited. Colocalization of the retained peptide with the Triton X-100 fraction of these cells was also reduced relative to this fraction of the untreated cells. This inhibition was apparent before the onset of FMLP endocytosis. The inhibition was 50% effective at 0.25 microgram dhCB/ml. Maximal inhibition (80-90%) occurred at doses of dhCB greater than 1 microgram/ml. The 90% retention of two plasma membrane markers by the cytoskeleton was marginally affected. These results support the hypothesis that coisolation of the high-affinity receptor-peptide complexes with granulocyte cytoskeletons occurs because of specific association of the complexes with the cytoskeleton at the cell surface. In addition, since these events precede internalization, they suggest that formation of the association between the ligand-receptor complex and cytoskeleton may be necessary for ligand-receptor endocytosis. Experiments were also performed to evaluate other functional consequences of cytoskeletal disruption on chemotactic peptide-stimulated functions. f-Met-Leu-Phe stimulation of O2- production was potentiated due to a prolongation of and an increase in the rate of O2- production. This potentiation had the same dose dependency as the inhibition of receptor modulation. The possible relationship of these various functions is discussed. PMID- 3838754 TI - High-performance liquid chromatographic analysis of the photodegradation products of phosmethylan. PMID- 3838755 TI - 63Ni electron-capture gas chromatographic assay for buprenorphine and metabolites in human urine and feces. AB - A 63Ni electron-capture gas chromatographic assay is described for buprenorphine, a potent narcotic agonist--antagonist. In addition, the assay is useful for the measurement of the metabolite norbuprenorphine and demethoxybuprenorphine, a rearrangement product resulting when buprenorphine is exposed to acid and heat. An extraction procedure was developed which optimized recovery of buprenorphine from biological samples and produced minimal background interferences and emulsion problems. Extract residues were derivatized with pentafluoropropionic anhydride and assayed by gas chromatography. Samples were analyzed with and without enzyme hydrolysis, thus providing a selective and sensitive assay for both free and conjugated buprenorphine, norbuprenorphine and demethoxybuprenorphine. The lower limits of detection following extraction of a 1 ml sample were ca. 10 ng/ml for buprenorphine and demethoxybuprenorphine and 5 ng/ml for norbuprenorphine. Application of the assay to human samples following a 40-mg oral dose of buprenorphine produced no evidence for the presence of demethoxybuprenorphine in urine or feces. Norbuprenorphine (free and conjugated) was present in urinary and fecal samples; buprenorphine (free and conjugated) was found in high amounts only in feces and in trace amounts in urine as conjugated buprenorphine. The urinary and fecal excretion pattern observed for a human subject following oral dosing of buprenorphine suggests enterohepatic circulation of buprenorphine. PMID- 3838756 TI - Assay methodology for quantification of the ester and ether glucuronide conjugates of diflunisal in human urine. AB - Diflunisal is a salicylate derivative with analgesic and anti-inflammatory properties. It is excreted in the urine as an ether glucuronide, a 1-O-acyl glucuronide and as unchanged drug. The 1-O-acyl glucuronide rearranges to isomeric esters of glucuronic acid under neutral to alkaline pH conditions. The development of a urine assay for the conjugates enables the elucidation of diflunisal non-linear pharmacokinetics. The assay quantitates the ether and ester glucuronides and free diflunisal in urine at 0.5-1.0 micrograms/ml. Analysis of the glucuronides does not require authentic standards. PMID- 3838757 TI - Catheter-associated fungemia caused by Fusarium chlamydosporum in a patient with lymphocytic lymphoma. AB - A case of catheter-associated fungemia caused by Fusarium chlamydosporum is described in a patient with lymphocytic lymphoma. The fungus, which has been isolated from soil but not reported to cause human infection, characteristically produces microconidiophores that are polyphialides bearing microconidia that are spindle-shaped but never globose. Results of in vitro antimicrobial susceptibility tests depended on the test conditions used. PMID- 3838758 TI - Sensory nerve endings of the incisive papilla of rat hard palate studied by peroxidase cytochemical methods. AB - This study utilized peroxidase cytochemical methods to survey and analyze the distribution, morphology, and functional relationship of the various components of sensory nerve endings in a focal region of the anterior hard palate (incisive papilla) of the rat. The studies included an anatomical survey of this relatively unknown oral structure, confirmation of the trigeminal origin (labeled by retrograde axonal transport of WGA-HRP injected into the incisive papilla) of the sensory nerve endings, and a complete analysis of the distribution of these nerve endings (labeled by anterograde axonal transport of HRP or WGA-HRP injected into the trigeminal ganglion). Three methods of fixation and two methods of cytochemical reaction were used for selection of an optimal technique for these studies. The results showed distinct patterns of peroxidase-labeled sensory nerve endings at three regions of the incisive papilla: a) dome region (ventral), where labeled nerve endings formed three parallel channels in association with three surface ridges; b) chemosensory corpuscle enriched region (medial to incisive canal), where 82% of the 30-40 chemosensory corpuscles were labeled; and c) lateral labium (lateral to incisive canal), where labeled nerve endings formed a circumscribed network guarding the orifice of incisive canal. The discrete organization of multiple sensory nerve endings in the incisive papilla of the rat may provide an easily accessible model system for various studies in sensory physiology. PMID- 3838759 TI - Metastatic squamous cell carcinoma of the skin occurring in a lymphomatous lymph node. AB - The incidence of metastasizing cutaneous squamous cell carcinoma is highly variable depending on the series analyzed. A man with an aggressive squamous cell carcinoma had subsequent metastasis to a lymphomatous lymph node, an apparently unique event. PMID- 3838760 TI - Postoperative intravenous dexamethasone administration: a preliminary investigation. AB - A retrospective review was performed on 27 patients undergoing foot surgery. All patients were administered 8 mg. of dexamethasone sodium phosphate intravenously immediately after surgery. Although these patients continued to require postoperative narcotics, the amount of parenteral narcotics required was minimal. The use of systemic corticosteroids does not produce as dramatic relief of postoperative pain as does local administration. However, the potential complications, including infection, are lessened with systemic use. PMID- 3838761 TI - Studies on the cell surface of zoospores and cysts of the fungus Phytophthora cinnamomi: nature of the surface saccharides as determined by quantitative lectin binding studies. AB - The nature of the surface saccharides of zoospores, "partially encysted zoospores" and cysts of the root-rotting fungus Phytophthora cinnamomi, has been examined by quantitative lectin binding studies. Zoospores bound concanavalin A (Con A), but did not bind any of a variety of other lectins tested. In contrast, both cysts and "partially encysted zoospores" bound soybean agglutinin (SBA) as well as Con A. This indicates that accessible alpha-D-glucosyl/alpha-D-mannosyl containing glycoconjugates predominate at the zoospore surface, whereas both alpha-D-glucosyl/alpha-D-mannosyl and galactosyl and/or N-acetyl-D galactosaminosyl residues are accessible at the surface of cysts and "partially encysted zoospores." Neither Ulex europeus lectin nor wheat germ agglutinin (WGA) bound to any of the three cell preparations, indicating the absence of accessible alpha-L-fucosyl and N-acetyl-D-glucosaminosyl residues. PMID- 3838762 TI - A preliminary study on rabbit tubal anastomosis with the Nd-YAG laser. AB - This is the first report on the use of the Nd-YAG laser in performing tubal end to end anastomosis in rabbit. At first, the optimal intensity of laser exposure was evaluated using histological preparations of tubal ampullary tissues which were exposed in various conditions. It was determined that the most suitable condition was 12 watts/cm2 of energy density of 0.2 second duration and a 0.6mm focal spot. Subsequently, these treatment conditions were applied practically to end end anastomosis of severed tubal ampulla of three rabbits. Four weeks later, the second laparotomy was done to confirm the restoration of tubal patency by chromopertubation in vivo, and to excise the restored tube to study the reconstruction of luminal epithelium histologically by scanning electron microscope. Proven by chromopertubation in vivo, tubal patency was restored in 4 out of 6 tubal samples, but in two, tubes were dehisced at the anastomosed line. By scanning electron microscopic observation of tubal samples in which patency was restored some injury to mucosal epithelial cells was seen at the anastomosed site. It is concluded that the Nd-YAG laser technique is useful in tubal end to end anastomosis of rabbit and accurate placement of tubal stumps is essential to the proper restoration of tubal patency. PMID- 3838763 TI - PTI: parent teacher interfacing. PMID- 3838764 TI - Are D.O.s real doctors? PMID- 3838765 TI - The influence of vitamin D metabolites on collagen synthesis by chick cartilage in organ culture. AB - When growth cartilage from rachitic chicks was cultured in the presence of the calcium-regulating hormone 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3), collagen resorption was increased and collagen synthesis decreased compared to control cultures containing no hormone. The minimum concentration of the hormone that caused a statistically significant inhibition of collagen synthesis was 10(-8) mol/l. Collagen synthesis by growth cartilage from normal chicks was also reduced by 1,25-(OH)2D3, showing that it was not an abnormal response of vitamin D depleted tissue. 25-Hydroxyvitamin D3 and 24,25-dihydroxyvitamin D3 also inhibited collagen synthesis by cultures of growth cartilage but only at higher metabolite concentrations. 1,25-Dihydroxyvitamin D3 (10(-7) mol/l) did not significantly inhibit collagen synthesis by cultures of articular fibrocartilage and of sternal cartilage, tissues that do not calcify physiologically. The minimum concentration of 1,25-(OH)2D3 (10(-9) mol/l) necessary to cause decreased collagen synthesis by embryonic chick calvaria was lower than the value obtained with growth cartilage; this suggests that bone cells may be more sensitive to the hormone in this respect than are growth cartilage chondrocytes. These findings provide evidence of a direct role of 1,25-(OH)2D3 in the control of endochondral bone formation which is consistent with its primary role in the maintenance of plasma calcium homeostasis. PMID- 3838766 TI - Effects of low phosphorus and low calcium diets on the production and metabolic clearance rates of 1,25-dihydroxycholecalciferol in pigs. AB - Severe dietary calcium (Ca) or phosphorus (P) deficiency leads to a similar degree of stimulation of plasma and intestinal 1,25-dihydroxycholecalciferol (calcitriol) levels and intestinal Ca absorption. In contrast, P depletion causes a much smaller increase in the renal 25-hydroxycholecalciferol-1-hydroxylase enzyme activity than does Ca depletion. To test the hypothesis that a reduced metabolic clearance rate (MCR) during P depletion might, in part, account for the observed increase in calcitriol levels, we have developed a simple primed infusion technique to determine the MCR and production rate (PR) of calcitriol, in vivo, in pigs fed low Ca and low P diets. The MCR of calcitriol was unchanged (0.92 ml/min per kg metabolic body size (MBS)) when low P diets were fed, but showed a significant 15% increase (1.06 ml/min per kg MBS) during the feeding of low Ca diets. The PR of calcitriol increased by 2.3-fold when low P diets were fed and by fourfold during Ca depletion. Thus the increase in plasma calcitriol levels during P depletion of pigs is caused by an increase in production rather than a decrease in clearance. In contrast, Ca depletion is associated with a slightly higher PR than indicated by measurement of plasma calcitriol levels because of the increased MCR. PMID- 3838767 TI - Inhibition of bone marrow colony formation by human natural killer cells and by natural killer cell-derived colony-inhibiting activity. AB - Incubation of human peripheral blood lymphocytes with bone marrow cells resulted in significant inhibition of colony formation by committed myeloid and erythroid cells. Using positively selected homogeneous natural killer (NK) cell preparations and lymphocyte subpopulations depleted of or enriched for NK cells, we definitively characterize as NK cells the cells in normal peripheral blood that are responsible for inhibition of bone marrow colony growth. The inhibitory effect of NK cells on hematopoiesis can be mediated by a soluble factor that is produced only by NK cells upon culture with HLA-DR+ hematopoietic cells and with NK-sensitive cell lines. Both NK cells and the NK-produced, colony-inhibiting activity (NK-CIA) are suppressive for allogeneic and autologous bone marrow CFU GEMM (colony-forming units, granulocyte, erythroid, monocyte, megakaryocyte), CFU E (CFU, erythroid), and early CFU-GM (CFU, granulocyte, monocyte), but not for either BFU-E (burst-forming units, erythroid) or late CFU-GM. [3H]Thymidine incorporation was inhibited by NK-CIA-containing supernatants in HLA-DR+ but not HLA-DR- bone marrow cell populations stimulated to proliferative by colony stimulating factor (CSF). These data suggest that the NK cell-mediated inhibitory effect on proliferation and differentiation of hematopoietic precursor cells is mediated in part or completely by the secreted NK-CIA. The concentration of NK CIA reached in the supernatant of the mixture of NK cell-containing lymphocyte populations with bone marrow cells is sufficient to account for the inhibitory effect mediated by NK cells. Our data support the hypothesis that human NK cells play a major role in the control of hematopoiesis, down-regulating it under conditions in which the NK cells are functionally activated. PMID- 3838768 TI - Evaluation of the efficacy of intrathecal nimodipine in canine models of chronic cerebral vasospasm. AB - Previous studies have examined whether calcium antagonists given sublingually, intravenously, or orally affect an experimentally induced vasospasm. This study was designed primarily to determine the efficacy of nimodipine given intracisternally in reversing the cerebral vasospasm produced in dogs by the injection of 4 ml of autogenous blood into the cisterna magna. The magnitude of the vasospasm and the vascular response to nimodipine were determined arteriographically. One group of animals was studied acutely to determine the dose and pharmacodynamic effects of intrathecal nimodipine, a second group was studied 1 to 4 days after the intrathecal injection of blood, and a third group was studied 3 to 6 days after successive injections of cisternal blood given 48 hours apart. Some animals were studied further 24 hours after the nimodipine treatment. Intrathecal administration of 4 ml of 10(-3) M nimodipine promptly and completely reversed the cerebral vasospasm in all groups. This effect lasted at least 4 hours but had disappeared by 24 hours. The intrathecal administration of nimodipine produced a transient drop in blood pressure. In contrast, nimodipine given sublingually (0.28 to 0.58 mg/kg) or intravenously (0.1 mg/kg) produced a persistent hypotensive effect without affecting the vasospasm. The results show that the presence of nimodipine in the cerebrospinal fluid will reverse the blood induced vasospasm, and suggest that this calcium antagonist administered intrathecally would be an effective emergency treatment of cerebral arterial spasm. PMID- 3838769 TI - Primary lymphosarcoma of the lung. PMID- 3838770 TI - Properties of the zona pellucida of cytochalasin B-induced triploid mouse eggs. AB - The hardening of the zona pellucida as a result of the cortical reaction was estimated in triploid oocytes produced with cytochalasin B by two different procedures. Triploid oocytes resulting from fertilization in the presence of cytochalasin B did not reveal hardening of the zona pellucida unlike triploids obtained by inhibiting in-vitro extrusion of the second polar body in oocytes fertilized in vivo. PMID- 3838771 TI - Effects of proteinase inhibitors on preimplantation embryos in the rat. AB - Proteinase inhibitors of microbial origin were injected into the uterine horns of mated rats at 14:00 h on Day 5 of pregnancy (spermatozoa in vaginal smear = Day 1), and 5 or 6 h later the embryos were flushed from the horns and examined. Chymostatin and alpha-MAPI, inhibitors of chymotrypsin-like serine proteinase and thiol proteinases, as well as thiolstatin, an inhibitor of thiol proteinases, significantly inhibited embryo growth. The inhibitory activity of alpha-MAPI on embryonic growth was distinctly greater than that of thiolstatin, although the ID50 values of the two inhibitors to papain are similar. Antipain and leupeptin which are inhibitors of trypsin-like and thiol proteinases, and talopeptin, an inhibitor of metal proteinases, significantly interrupted the removal of the zona pellucida from expanding blastocysts. These results suggest that (1) a chymotrypsin-like proteinase seems to be important to the growth of the embryo, (2) a thiol proteinase may participate in embryonic growth, and (3) a trypsin like proteinase and a metal proteinase are likely to participate in zonalysis. PMID- 3838772 TI - Ocular manifestations of Graves' disease. PMID- 3838774 TI - [A example of the operation of laboratory system by BASIC programming]. PMID- 3838773 TI - Pharmacokinetics of ivermectin in sheep following intravenous, intra-abomasal or intraruminal administration. AB - The pharmacokinetics of ivermectin in plasma following intravenous, intra abomasal, and intraruminal administration to sheep was determined. When given intravenously, ivermectin was very slowly eliminated with a terminal half-life of 178 h and a volume of distribution at steady state of 5.3 l/kg indicating sequestration in a temporary depot. Intra-abomasal administration resulted in rapid absorption, a peak plasma concentration of 60.6 ng/ml at 4.4 h, and 100% bioavailability. However, intraruminal administration produced a much lower peak concentration (17.6 ng/ml at 23.5 h) and bioavailability (25.1%). A subsequent in vitro study indicated that ivermectin may be rapidly metabolized in the rumen. PMID- 3838775 TI - The cochlear implant. PMID- 3838776 TI - [Severe hereditary protein C deficiency in a newborn infant with fulminant purpura--successful treatment with phenprocoumon]. AB - A newborn baby was born with scrotal hematoma and a diagnosis of testicular torsion was made. This diagnosis proved false, when the hematoma was resorbed after a few days and other hematomas developed instead (abdomen, elbow, foot, scalp). A total of nine hemorrhagic episodes were observed, most of them occurring on the scalp. All lesions were sharply delineated, started with red to purple discoloration and then turned to bluish-black indicating gangrene. Histology revealed extensive bleeding into the corium, fibrin thrombi within the capillaries, and complement and IgG in the small arterial walls. Each bleeding was associated with hypofibrinogenemia and thrombocytopenia. A diagnosis of hereditary protein C deficiency was made. Blood levels were consistent with heterozygosity of both the parents and homozygosity of the child. Bleedings were controlled by Cohn fraction I and heparin. It was impossible, however, to prevent further hemorrhage by continuous i.v. heparin. In addition aprotinin, epsilon aminocaproic acid, AT III, and prednisone were ineffective. Continuous remission finally could be sustained with oral phenprocoumon. PMID- 3838778 TI - [Liposome phospholipid substitution and lung function in surfactant deprived rats]. AB - In vivo activity of an artificial surfactant was studied in surfactant depleted rats. After tenfold alveolar lavage, PaO2, tidal volume, and compliance of the respiratory system fell to one third of initial value. Substitution of large unilamellar vesicles containing 90% Dipalmitoylphosphatidylcholine and 10% unsaturated phosphatidylglycerol largely restored oxygenation and lung mechanics in most animals. Complete normalization with weaning from the ventilator, however, was achieved neither with liposomes nor with natural surfactant concentrate. PMID- 3838777 TI - [Immunologic aspects of transitory neonatal hyperthyroidism]. AB - The pathogenesis of neonatal transient hyperthyroidism has not been fully established, but the placental transfer of thyroid stimulating immunoglobulins such as thyroid stimulating antibodies is considered the main cause. Clinical signs usually subside with the disappearance of thyroid-stimulating IgG in the serum of the neonate. We report the clinical course of a neonatal transient hyperthyroidism. PMID- 3838779 TI - Continuous epidural narcotic analgesia for intractable pain due to malignancy. AB - Eighty consecutive cancer patients with severe pain, uncontrolled by conventional narcotic analgesics, received a 2-mg test dose of morphine epidurally. Thirty four of them had significant pain relief and were thus selected to receive continuous treatment. This consisted of 2-6 mg of morphine administered every 8 24 hours through an indwelling epidural catheter. The duration of treatment was from 1 to 28 weeks with a median of 4 weeks. Twenty-five (76%) of the patients experienced complete relief of pain, while nine had only a partial analgesic response. Complications were minimal. No sepsis, hypotension, or respiratory depression occurred. It is recommended that cancer patients with intractable pain will be selected for continuous epidural analgesia by evaluating their response to a test dose of epidural morphine. PMID- 3838780 TI - A simple algorithm for solving the cable equation in dendritic trees of arbitrary geometry. AB - We present an efficient algorithm for solving the one-dimensional cable equation in the Laplace (frequency) domain for an arbitrary linear membrane. This method, a reformulation and extension of the geometrical calculus developed by Butz and Cowan (1974), solves for the transfer impedance between any two points in a branched cable structure of arbitrary geometry (but without loops) by the repetitive application of four simple equations. Such an algorithm is used to analyze the electrical behaviour of nerve cells with highly branched dendritic trees. The algorithm can be implemented using a language such as C, PASCAL or LISP and runs on small machines. PMID- 3838781 TI - Software for electrophysiological experiments with a personal computer. AB - These programs were written for the IBM personal computer equipped with a Tecmar Labmaster analog interface board. The software operates under the MS-DOS operating system; it is written in compiled BASIC and employs short machine language subroutines for crucial functions. Details are presented on the analog interface routines which make special use of the 9513 counter/timer chip on the Labmaster. Time resolution is about 32 microseconds per sample on the PC and 15 microseconds on the PC/AT. One series of programs performs traditional voltage- and current-clamp experiments on macroscopic currents in whole cells. A second series interfaces with a hardware window discriminator to capture single-channel events in a recirculating buffer; a stimulus can be triggered to fire during an open channel. Off-line programs perform standard analyses, and further processing can be performed with standard spreadsheet programs. PMID- 3838782 TI - [Arthroscopy of the knee. Evaluation of 80 cases]. PMID- 3838783 TI - [Safeguarding the meniscus]. PMID- 3838784 TI - [Molsidomin in stable stress angina]. PMID- 3838785 TI - Neurologic complications of infective endocarditis. AB - Neurologic complications continue to occur in approximately 30 per cent of all patients with infective endocarditis and represent a major factor associated with an increased mortality rate in that disease. Of these complications, cerebral embolism is the most common and the most important, occurring in as many as 30 per cent of all patients, most of whom ultimately die. Emboli that are infected also account for all the other complications (mycotic aneurysm, meningitis or meningoencephalitis, brain abscess) that may develop. Emboli are more common in patients with mitral valve infection and in those infected with more virulent organisms. Mycotic aneurysms (often preceded by an embolic event) occur more frequently and earlier in the course of acute endocarditis, rather than later, which is more common in the course of subacute disease. The management of a cerebral mycotic aneurysm depends on the presence or absence of hemorrhage, its anatomic location and the clinical course. Healing can occur during the course of effective antimicrobial therapy and thus will preclude the need for automatic surgery in all angiographically demonstrated aneurysms. The indication for surgical intervention must be evaluated on an individual basis. Meningitis is usually purulent when associated with virulent organisms, but the CSF may present an aseptic formula when associated with subarachnoid hemorrhage or multiple microscopic embolic lesions, infected or otherwise. Macroscopic brain abscesses are rare, but multiple microscopic abscesses are not uncommon in patients with acute endocarditis due to virulent organisms. Seizures are not uncommon in patients with infective endocarditis. Focal seizures are more commonly associated with acute emboli, whereas generalized seizures are more commonly associated with systemic metabolic factors. Penicillin neurotoxicity should be considered in seizure patients with compromised renal function who are receiving high doses of penicillin. The CSF tends to reflect the nature of the infecting organism rather than the nature of the neurologic complication, except when hemorrhage is present. Endocarditis due to virulent organisms, such as Staphylococcus aureus, is usually associated with a purulent CSF formula, whereas non-virulent organisms, such as "viridans" streptococci, usually have aseptic or normal CSF formulas. PMID- 3838786 TI - Beneficial actions of two novel calcium entry blockers in the isolated perfused hypoxic cat liver. AB - The effects of two new calcium entry blockers, anipamil and ronipamil, were studied during 150 min of normoxic or hypoxic perfusion in isolated perfused cat livers. Hypoxic livers in which the vehicle for these inhibitors (i.e., ethanol) was injected intravenously prior to isolation of the liver, exhibited significantly higher increases in perfusion pressure, perfusate lactate dehydrogenase and cathepsin D activities, compared to control normoxic perfused livers. In contrast, the livers isolated from cats pretreated with calcium entry blocker anipamil and subsequently perfused under hypoxic conditions showed no significant difference in any of these variables from the control normoxic perfused livers. Ronipamil given intravenously 30 minutes prior to isolation also significantly protected the liver during hypoxia. The protection afforded by anipamil and ronipamil appears to be related to their inhibition of Ca++ influx which has been linked to cell death in hepatocytes. PMID- 3838787 TI - Treatment of benign, semimalignant, and malignant skin tumors with the Nd:YAG laser. AB - Reported are first experiences with Nd:YAG laser treatment of benign, semimalignant, and malignant skin tumors in 90 patients. Treated lesions included condylomata acuminata, basal cell carcinomas, solar keratosis, squamous cell carcinomas, and secondary malignant skin tumors. First clinical and histological results are promising, but long-term follow-up is required to judge the definite efficacy of this therapeutical modality. PMID- 3838788 TI - The use of the Nd:YAG laser in urology. AB - The use of the neodymium:YAG(Nd:YAG) laser in urology in still in its infancy. To date, the most widely published application of this laser is in the treatment of bladder carcinoma. We have utilized the Nd:YAG laser in 23 treatments for superficial bladder tumors. The laser has both advantages and shortcomings, which are thoroughly addressed. In our hands the laser has been a safe instrument for the treatment of these lesions, although we do not recommend its use for tumors greater than 3 cm. We have treated two patients with invasive disease one week prior to planned cystectomy. In one case, no residual tumor was found at cystectomy, while the second patient had viable tumor only in an untreated area. Two patients were successfully treated with the laser for intractable bladder bleeding, one each with primary and secondary bladder tumor. Seven patients with condylomata acuminata were treated with laser therapy. All had excellent results without complication. One patient with urethral bleeding secondary to trauma was treated without success, while one patient with a urethral hemangioma was well treated with the Nd:YAG laser. Thus the Nd:YAG laser would appear to have a place in the urologic armamentarium, but whether it is cost-effective for widespread use remains to be seen. PMID- 3838789 TI - Temperature rise in biological tissue during Nd:YAG laser irradiation. AB - Few data are available about temperature distribution in tissue during Nd:YAG laser irradiation. To study the heat distribution that produces tissue coagulation, we used a thermographic camera aimed orthogonally to the laser beam axis to obtain thermal maps. Immediately after surgical resection, specimens of human stomach were irradiated near the resected edge, and the heat emitted sideways was detected by an infrared image system. A magnifying lens mounted on the camera enabled us to obtain 0.1 mm spatial resolution of the isothermic curves. The thermal analysis showed that the maximum depth where the increase in temperature reached 25 degrees C (corresponding to a coagulation temperature of about 60 degrees C) was never greater than 3 mm, irrespective of the power and exposure time used. Moreover, the bidimensional thermal maps showed that the temperature did not decrease in a purely exponential fashion along the beam axis, but reached a maximum at about 1 mm beneath the surface. This fact, which confirms the decrepitation theorem, could explain the explosion inside the tissues observed in surgical application of the Nd:YAG laser. PMID- 3838791 TI - Measurement of mRNA concentration and mRNA half-life as a function of hormonal treatment. PMID- 3838790 TI - Intestinal epithelial cells and musculature contain different muscarinic binding sites. AB - Muscarinic receptors on epithelial cells mediate intestinal secretion, while those in intestinal smooth muscle mediate motility. Experiments were carried out to determine whether the muscarinic receptors mediating each of these two functions in intestinal tissue might be associated with differences in the way agonist and antagonist drugs interact with the receptors. The inhibition constant (Kj) values for atropine, pirenzepine, and oxotremorine competition of specifically bound (3H)QNB were determined using membrane preparations from the muscular coat and from epithelial cells of rat jejunum, ileum, and colon. The Kj values of atropine were similar (1.2-10 nM) when comparing muscle layers and epithelial cells from any intestinal region. In contrast, the Kj values for pirenzepine were significantly higher in membranes from the musculature (400 1,200 nM) than in any of the epithelial cell membranes (20-100 nM). Kj values for pirenzepine in gut muscle were similar to those in heart (300 nM), whereas the Kj values in the cerebral cortex (39 nM) and the epithelial cell membranes closely approximated one another. The Kj values for oxotremorine competition of QNB binding in all intestinal muscular tissues (29-48 nM) and in heart (16 nM) were less than those of the intestinal epithelial cells (100-1,300 nM) or cerebral cortex (71 nM). Thus, pirenzepine and oxotremorine binding studies show that the nature of interactions between these agents and muscarinic sites is different when comparing epithelial cells and musculature of the gut. PMID- 3838792 TI - Simultaneous presentation of relapsing Hodgkin's disease and treatment-related non-Hodgkin's lymphoma. AB - A 55-year-old white man was diagnosed in 1975 with Hodgkin's disease stage IIA, mixed cellularity. He was treated with 4,500 rads to an inverted-Y field followed by six cycles of MOPP and remained in complete remission. In 1983 a right axillary lymph node biopsy showed recurrent Hodgkin's disease, mixed cellularity. While receiving his initial chemotherapy he developed persistent epigastric distress. Endoscopic gastric biopsy demonstrated a diffuse large-cell non Hodgkin's lymphoma. Surface marker studies confirmed the separate identity of these two malignant lymphoproliferative processes. This represents the first reported simultaneous occurrence of relapsing Hodgkin's disease with treatment related non-Hodgkin's lymphoma. PMID- 3838793 TI - Organ distribution of aluminium in uremic rats: influence of parathyroid hormone and 1,25-dihydroxyvitamin D3. AB - Investigations were performed in order to see whether or not the application of parathyroid hormone or 1,25-dihydroxyvitamin D3, or both might influence the organ distribution of orally and parentally administered aluminium in control and uremic rats. The data show that 1,25-dihydroxyvitamin D3, affects the organ uptake in a different way than parathyroid hormone. Whereas parathyroid hormone increased the aluminium concentration in the liver, 1,25-dihydroxyvitamin D3 enhanced the aluminium uptake in the heart and the muscle, on the other hand, simultaneous application of 1,25-dihydroxyvitamin D3 and parathyroid hormone decreased the aluminium content of the bone, liver and brain. PMID- 3838795 TI - Noumea, New Caledonia during WW II. PMID- 3838794 TI - Parathyroid function and vitamin D status in patients with bone metastases of prostatic origin. AB - The biochemical parameters of calcium metabolism were measured in patients suffering from bone metastases of prostatic origin. In 14 patients with sclerotic bone lesions, serum calcium and serum phosphorus were significantly lower than in controls. Serum alkaline phosphatase levels, which reflect osteoclastic bone formation, and urinary hydroxyproline, which reflects osteoclastic bone resorption, were both increased. 25-Hydroxyvitamin D (25-OHD) levels were appropriate for the age of the patients but serum immunoreactive parathyroid hormone (iPTH) and 1,25-Dihydroxyvitamin D (1,25-(OH)2D) levels were significantly increased. In contrast, no significant changes wee noted in 3 patients with pure osteolytic lesions. We conclude that the patients with sclerotic bone metastases have a high bone formation which frequently induces a secondary hyperparathyroidism and increased 1,25-(OH) 2D levels. A calcium and/or vitamin D supplement could therefore be advantageous in patients having symptomatic hypocalcemia or osteomalacia. PMID- 3838796 TI - Sterols accelerate degradation of hamster 3-hydroxy-3-methylglutaryl coenzyme A reductase encoded by a constitutively expressed cDNA. AB - A recombinant plasmid containing a full-length cDNA for hamster 3-hydroxy-3 methylglutaryl coenzyme A reductase was introduced by calcium phosphate-mediated transfection into UT-2 cells, a mutant line of Chinese hamster ovary cells that lack 3-hydroxy-3-methylglutaryl coenzyme A reductase activity and thus require low density lipoprotein-cholesterol and mevalonate for growth. We selected a line of permanently transfected cells, designated TR-36 cells, that expressed high levels of 3-hydroxy-3-methylglutaryl coenzyme A reductase activity and thus grew in the absence of low density lipoprotein and mevalonate. Constitutive synthesis of reductase mRNA in TR-36 cells was driven by the simian virus 40 early promoter, and therefore the mRNA was not suppressed by sterols, such as 25 hydroxycholesterol or cholesterol derived from low density lipoprotein, which normally suppresses transcription of reductase mRNA when the reductase gene is driven by its own promoter. Although TR-36 cells continued to synthesize large amounts of reductase mRNA and protein in the presence of sterols, reductase activity declined by 50 to 60%. This decline was caused by a twofold increase in the rate of degradation of preformed enzyme molecules. The current data demonstrate that sterols accelerate the degradation of reductase protein independently of any inhibitory effect on the synthesis of the protein. PMID- 3838798 TI - Conservation of structure detected in two trypanosome surface glycoproteins by amino acid sequence alignment. AB - The predominant molecule exposed to antibody on the surface of Trypanosoma brucei is a glycoprotein of about 60 000 molecular weight which varies in amino acid sequence. The complete sequences of two such variable surface glycoproteins (VSGs) from randomly isolated, different antigenic types of trypanosomes were compared by amino acid sequence alignment. Homologous sequences were found distributed over various regions of the VSGs. Particularly good homology was observed between residues 16-34, 91-115, 177-194 and 254-345 from the N-terminus, in addition to the known conserved region close to the C-terminus. Homology was also demonstrated in the corresponding regions of the cDNA sequences by matrix analysis. PMID- 3838797 TI - Transient expression of human adenosine deaminase cDNAs: identification of a nonfunctional clone resulting from a single amino acid substitution. AB - Human adenosine deaminase (ADA) is an important purine catabolic enzyme which irreversibly deaminates adenosine and deoxyadenosine. Severe genetic deficiency of ADA leads to an immunological deficiency state in which T-lymphoid cells are selectively destroyed by the accumulation of toxic levels of deoxyadenosine and deoxy-ATP. In preparation for transfer of ADA sequences into a variety of cell types, we explored expression of ADA cDNAs transfected into cultured cells within a simian virus 40-based expression vector. After transfection into monkey kidney (COS) cells, ADA cDNA encompassing the entire coding region of the protein generated human ADA activity. An unexpected finding, however, was the identification of a cDNA clone that failed to produce either human enzyme activity or immunoreactive ADA protein. As this pattern is typical of many naturally occurring mutant ADA alleles, we characterized the molecular defect in this clone. DNA sequence analysis revealed a single nucleotide substitution in amino acid position 50 (glycine-valine). Northern blotting with a unique 17-mer oligonucleotide demonstrated the absence of the mutant sequence in the mRNA from which the cDNA library giving rise to the mutant cDNA was constructed. Therefore, the substitution in the variant cDNA was created during cloning. These data define one critical region of the human ADA protein molecule and suggest a convenient strategy for characterization of the phenotypes associated with naturally occurring mutant alleles. PMID- 3838799 TI - 1,25-Dihydroxyvitamin D3 and granulomatous lesions. PMID- 3838800 TI - Hypercalcemia and elevated 1,25-(OH)2D levels in a patient with end-stage renal disease and active tuberculosis. PMID- 3838801 TI - Suitable treatment. PMID- 3838802 TI - Comparison of alpha-tropomyosin sequences from smooth and striated muscle. AB - Tropomyosins are a closely related family of proteins with a dimeric alpha-coiled coil structure. Skeletal isoforms are composed of two types of subunits, alpha and beta which, in turn, are assorted into two main molecular species alpha alpha and alpha beta. Both isoforms are present in different molar ratios in individual skeletal muscle types. In small mammals, however, only alpha-chain is expressed in cardiac muscle. Tropomyosin, in association with the troponin complex (troponin-I, -T and -C) plays a central role in the Ca2+-dependent regulation of vertebrate striated muscle contraction. On the other hand, despite structural similarities with the striated isoforms, the function of this protein in smooth muscle and non-muscle cells remains unknown, because in these cells contraction is thought to be regulated by myosin-linked processes independently of tropomyosin. Here we report the nucleotide sequences of cloned complementary DNAs for rat striated and smooth muscle alpha-tropomyosin. Comparison of the derived amino-acid sequences reveals the existence of tissue-specific peptides that delimit the putative troponin-I and troponin-T binding domains of tropomyosin. S1 nuclease mapping studies reveal the existence of three distinct alpha-tropomyosin messenger RNA isoforms each encoding a different protein; these isoforms are tissue-specific, developmentally regulated and most probably encoded by the same gene. PMID- 3838803 TI - Changes of free calcium levels with stages of the cell division cycle. AB - Although the regulation of events in the cell division cycle by calcium or other cations has been the subject of much interest and speculation, experimental studies have been hampered by the difficulty of measuring submicromolar intracellular free calcium concentrations ([Ca2+]i) over an entire cell cycle. We now describe experiments using a new fluorescent calcium chelator, fura-2 (see Fig. 1c for structure), for continuous measurement of [Ca2+]i from fertilization through the first cleavage of individual eggs of the sea urchin Lytechinus pictus. We also show for comparison the results of parthenogenetic activation by ammonia. In addition to the known transient rise of [Ca2+]i at fertilization, further peaks are now revealed during pronuclear migration, nuclear envelope breakdown, the metaphase/anaphase transition and cleavage. Parthenogenetic activation by ammonia also elicits a sustained rise starting at nuclear envelope breakdown. PMID- 3838804 TI - Time course and spatial distribution of neodymium: yttrium-aluminum-garnet (Nd:YAG) laser-induced lesions in the rat brain. AB - Cerebral lesions made by focal neodymium:yttrium-aluminum-garnet (Nd:YAG) laser irradiation of the rat forebrain were studied in adult Wistar rats. For the analysis of time-dependent changes, the brains of 28 animals were irradiated with a constant energy density of 461 J/cm2. In this series, survival time ranged from 0.5 hours to 80 days. Immediately after irradiation, a circular lesion appeared on the surface of the brain. This lesion was surrounded by an edematous area intensively stained with Evans blue. At energy levels higher than 30 J, this circular edema contained numerous thrombosed vessels. Histopathologically, the lesion consisted of three distinct zones: the central coagulation necrosis was surrounded by a zone of delayed colliquation necrosis and by perifocal edema. At approximately 80 days after irradiation, the resulting cortical defect was covered by a pial membrane. Edematous changes of the brain cortex and the adjacent white matter were observed as early as 1 hour after irradiation. Within 16 hours, the perifocal edema spread over the white matter of both hemispheres, and it had disappeared by the 5th day after irradiation. In a second experiment, the energy density varied from 231 to 3077 J/cm2. This series consisted of 84 animals that were allowed to survive 48 hours. The size of the lesion depended on the level of energy applied, but the depth of the lesion varied less than the diameter at the brain surface.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838805 TI - Absorption of iohexol from cerebrospinal fluid to blood: pharmacokinetics in humans. AB - The absorption of iohexol from the subarachnoid space was studied in 9 patients. Serum concentrations of iohexol were measured for a minimum of 24 hours after injection. Peak serum concentrations were observed after 2.2 (1.7-2.7) hours. The half-life of the subsequent decrease in serum concentrations was 3.4 (2.2-7.9) hours. Concentrations of iohexol in cerebrospinal fluid were 0.29-4.3 mg I/ml 24 hours after injection (7 patients). Serum and cerebrospinal fluid concentrations of iohexol are comparable to those found after intrathecal injection of metrizamide. PMID- 3838807 TI - Alzheimer dementia and reduced nicotinamide adenine dinucleotide (NADH) diaphorase activity in senile plaques and the basal forebrain. AB - The activity of reduced nicotinamide adenine dinucleotide (NADH)-diaphorase was examined histochemically in the amygdala, cortex and sublenticular substantia innominata (nucleus basalis of Meynert) of patients with Alzheimer's disease and senile dementia of the Alzheimer type (SDAT). Senile plaques were characterized by increased enzyme levels and the presence of astrocytes highly reactive for NADH-diaphorase. In the sublenticular substantia innominata, the number of neurons positive for NADH-diaphorase was reduced in both Alzheimer's disease and SDAT, a result paralleled by a reduction of Nissl-stained cells, and this pathology was accompanied by an increase in the number of astrocytes. Intact substantia innominata somata in the former dementia, however, showed essentially normal levels of the enzyme, whereas in the SDAT patients, an abnormal distribution of NADH-diaphorase was observed frequently. It is proposed that the increased NADH-diaphorase associated with senile plaques and their accompanying astrocytes may be linked, in part, to the increased astrogliosis and decrease of neurons in the basal forebrain and that neuropathologic differences may exist between Alzheimer's disease and SDAT in terms of energy metabolism. PMID- 3838809 TI - [Spontaneous osteonecrosis of the knee]. PMID- 3838806 TI - A comparison between wheat germ agglutinin-and choleragenoid-horseradish peroxidase as anterogradely transported markers in central branches of primary sensory neurones in the rat with some observations in the cat. AB - Horseradish peroxidase conjugates of either the lectin wheat germ agglutinin or choleragenoid, the binding subunit of cholera toxin, were injected into the L5 spinal ganglion of adult rats. This enabled comparison of these two conjugates as anterograde tracers in the primary sensory system. After a postoperative survival of 4 h to 30 days, the rats were perfused and frozen sections from spinal and medullary regions receiving primary afferents were processed for horseradish peroxidase histochemistry with tetramethylbenzidine as the chromogen. Additional observations were made in two adult cats. Following injection of wheat germ agglutinin-horseradish peroxidase the labelling appeared mostly as small-sized granules. The concentration of labelled primary afferents in the grey matter of the spinal cord was greatest in the marginal zone and the substantia gelatinosa and less pronounced in the deep parts of the dorsal horn. Labelling was also found in a region lateral to the central canal and in the ventral horn. Following injection of choleragenoid-horseradish peroxidase the labelling appeared mainly as larger-sized granular profiles. The concentration of labelled primary afferents was greatest in the deep part of the dorsal horn and pronounced in a region lateral to the central canal and in the ventral horn. All these regions are known to receive large calibre fibres. The marginal zone and the substantia gelatinosa, known to receive fine calibre fibres, showed almost no labelling in the rat. In the cat, however, there was somewhat more labelling in the substantia gelatinosa. Labelling of neuronal cell bodies indicating transneuronal transport was seen after injection of wheat germ agglutinin-horseradish peroxidase. Transneuronal labelling did not seem to occur after injection of choleragenoid horseradish peroxidase. The present findings show that wheat germ agglutinin-and choleragenoid-horseradish peroxidase give rise to markedly different labelling patterns. A possible explanation for the different labelling in the marginal zone and substantia gelatinosa could be that certain primary sensory neurones lack either receptors for choleragenoid on their neuronal plasma membrane or the ability to transport the choleragenoid-horseradish peroxidase complex. PMID- 3838808 TI - Muscarinic acetylcholine receptors in chick heart: influence of heat and N ethylmaleimide on receptor conformations and interactions with guanine nucleotide dependent regulatory proteins. AB - Several conformations of muscarinic acetylcholine receptors in chick heart are revealed by the energetics of agonist binding. Heating cardiac membranes at 50 degrees C for 5 min decreased agonist affinity, steepened agonist binding curves and eliminated receptor sensitivity to guanine nucleotides. N-ethylmaleimide (NEM) steepened agonist binding curves and eliminated receptor sensitivity to guanine nucleotides without decreasing agonist binding affinity. NEM prevented and reversed the effect of heat on agonist affinity. Pirenzepine and N methylscopolamine binding were unaffected by either treatment. NEM and heat stabilize muscarinic receptors in conformations unrelated to those associated with naturally occurring receptor populations. PMID- 3838811 TI - [Iron and vitamin B 2 metabolism in diffuse toxic goiter and acquired hypothyroidism in children]. PMID- 3838810 TI - Magnetic resonance imaging of lymphomas in children. AB - Magnetic resonance imaging has been used to evaluate 10 children with lymphomas and was able to identify disease in all 10 cases and monitor response to therapy in all three patients with follow-up studies. It could not distinguish between the different histological types of lymphoma. The image intensity of a diseased spleen in one case was different from that of five other normal spleens in six children with Hodgkins disease. Magnetic resonance imaging compared well with computed tomography and it was especially good at identifying blood vessels. PMID- 3838812 TI - Effects of comb dubbing on the performance of laying stocks. AB - Three studies were conducted with birds dubbed at hatch vs. dubbed and dewattled at 118 days or 255 to 260 days of age or with normal hens. In the first, involving 5928 pullets of four strains housed 1 per cage, dubbing and dewattling at 255 to 260 days caused small adverse effects on egg numbers as compared with nondubbed controls. Body size was reduced, and both egg weight (EW) and shell strength were increased slightly. In the second study, involving 8180 pullets of nine strains housed 1 per cage, dubbing and dewattling at 118 days slightly increased survivor egg production (SEP) and laying house mortality, and reduced age at first egg, 240-day EW, and 450-day Haugh units (HU), as compared with dubbing only at hatch. There were significant strain by dubbing treatment interactions for hen-day rate of lay (HDR) and SEP. In the third study, involving 1824 pullets of three strain crosses housed 2 and 3 birds per cage (three different cage sizes), there were no significant differences between birds dubbed at hatch and those not dubbed. Variation in age at 50% production, SEP, and HDR was reduced for the dubbed groups. These studies show that the older the birds are when dubbed, the greater the negative effects of dubbing. Hens dubbed at hatch exhibit no effects with the early dubbing or adverse effects in the laying house. PMID- 3838813 TI - Does human placenta produce prostacyclin? AB - We have previously demonstrated that the human placenta possesses potent platelet anti-aggregatory activity. This activity was exhibited only when aggregation was induced by adenosine diphosphate (ADP), but not when induced by adrenaline, ristocetin or collagen. We have also shown that placental extracts degrade ADP. We therefore concluded that the placenta's anti-aggregatory activity, in vitro, was not due to prostacyclin (PGI2) but to an 'ADPase'. In view of some reports claiming that the human placenta produces PGI2, we carried out a series of experiments to establish whether human placental tissue can convert [14C] arachidonic acid [( 14C]-AA) to 6-oxo-PGF1 alpha, the stable metabolite of PGI2. Tissue from placenta and the membranes did not show any appreciable conversion of [14C]-AA into 6-oxo-PGF1 alpha. This finding was confirmed by radioimmunoassay techniques where the placenta was shown to produce spontaneously only minimal amounts of 6-oxo-PGF1 alpha. We conclude that placental tissue and the fetal membranes do not synthesize a significant amount of PGI2, certainly not enough to account for the potent platelet anti-aggregatory activity of the placenta in vitro. Placental platelet anti-aggregatory activity in vitro, is probably due entirely to ADPase activity. PMID- 3838814 TI - [Pharmcodynamic evaluation of the use of anaprilin combined with merkazolil for the therapy of thyrotoxicosis]. AB - Anaprilin pharmacodynamics was studied in thyrotoxicosis patients. The clinical therapeutic effect of anaprilin, mercazolyl and their combinations was studied. In anaprilin therapy the drug should be individually dosed out with regard to its basal concentration in the blood and the degree of pulse retardation at rest. An adequate anaprilin dose for most patients was 160 mg/day. Anaprilin-mercazolyl combined therapy resulted in more retarded pulse as compared to a single drug therapy with anaprilin. The effect of anaprilin was potentiated by mercazolyl doses which did not by themselves cause a positive cardiovascular effect in the first two weeks of therapy. PMID- 3838815 TI - Resorptive versus absorptive hypercalciuria in sarcoidosis: correlations with 25 hydroxy vitamin D3 and 1,25-dihydroxy vitamin D3 and parameters of disease activity. AB - Sarcoidosis is frequently attended by hypercalciuria and sometimes by hypercalcaemia. The type of hypercalciuria and its relationships with disease extension and activity have rarely been investigated. In order to clarify these issues we undertook an investigation by a calcium absorption test in 39 patients with untreated thoracic sarcoidosis, and tried to establish correlations with vitamin D3 metabolism and some features of the disease. We found three types of responses. Group I (n = 12) with a normal test had normal 1,25-(OH)2D3 and rare extrathoracic localisations. Group II (n = 14) with absorptive hypercalciuria had higher serum calcium; 1,25-(OH)2D3 (p less than 0.001) and the free 1,25-(OH)2D3 index (p less than 0.05) were raised. Sarcoidosis was more often inflammatory, developing and disseminated. Group III (n = 13) had resorptive hypercalciuria, and hypercalcaemia was frequent. 1,25-(OH)2D3 (p less than 0.01) and the free 1,25-(OH)2D3 index (p less than 0.05) were raised but to the same degree as in Group II. Sarcoidosis was more disseminated and developing than in Groups I and II. In the 39 patients, iPTH and nephrogenous cAMP were low. Post-calcium load urinary calcium/creatinine (Ca/Cr) and 1,25-(OH)2D3 were correlated (p less than 0.05). Extrathoracic extension was associated with higher fasting urinary Ca/Cr (p less than 0.001), and development with higher post-load urinary Ca/Cr (p less than 0.001). Thus, absorptive hypercalciuria is related to the development of sarcoidosis and can be explained by high free 1,25-(OH)2D3, while resorptive hypercalciuria seems to be linked with disease extension. In such a case, the mechanism of osteolysis is not solely accounted for by high 1,25(OH)2 vitamin D3 serum levels, and we postulate that some other factor is at work, related to the extent of the granulomatous process. PMID- 3838816 TI - Chromatographic characterisation of the circulating neuropeptide Y immunoreactivity from patients with phaeochromocytoma. AB - Samples of adrenal medullary phaeochromocytoma from two patients were extracted in acid. The tissue concentrations of neuropeptide Y (NPY)-like immunoreactivity were found to be 0.94 and 8.11 micrograms/g. Plasma from these patients subjected to NPY radioimmunoassay after Sephadex G-75 gel filtration chromatography revealed circulating plasma concentrations of 1889 and 2079 pg/ml, compared to levels in normal plasma of less than 50 pg/ml, treated in the same way. Further characterisation of this plasma NPY-like immunoreactivity by HPLC showed this peptide to possess identical elution behaviour to human NPY standard. It is suggested that circulating NPY may be a contributory factor in the symptoms exhibited by some patients with adrenal medullary phaeochromocytoma. PMID- 3838817 TI - Inhibition of renal membrane binding and nephrotoxicity of gentamicin by polyasparagine and polyaspartic acid in the rat. AB - The effect of the polyamino acids, polylysine, polyasparagine and polyaspartic acid, on 3H-gentamicin binding to rat renal brush border membranes was observed. All three polyamino acids showed inhibition of 3H-gentamicin binding at 1X and 0.1X the molar amount of gentamicin. Polylysine, polyasparagine and polyaspartic acid were subsequently tested in vivo for potential nephroprotective activity vs. gentamicin in a 14-day subacute nephrotoxicity model at 3X, 0.5X and 0.3X the molar dose of gentamicin, respectively. While polylysine did not produce significant nephroprotection, polyasparagine and polyaspartic acid completely eliminated gentamicin-induced nephrotoxicity. PMID- 3838818 TI - Epicardial image analysis using a desk top computer. Comparison of epicardial flow distribution and NADH-fluorescence pattern. AB - In isolated coronary-ligated rabbit hearts, quantification of epicardial flow distribution pattern and of ischemic area was performed from flow indicator and endogenous NADH-fluorescence pictures, respectively, after UV-flash photography. After being digitized (256 X 256 pixels), the fluorescence photos were analyzed by an Apple desk computer using self-written software (fast machine routines called from BASIC programs). The ischemic area (= sum of pixels with enhanced NADH fluorescence) corresponds to the area with disturbed coronary perfusion (= sum of pixels with diminished indicator fluorescence). Since coronary-active drugs might affect both parameters--local myocardial perfusion and metabolism- differentially, the method presented seems to be a very useful technique for differentiated analysis of the action profile of coronary-active drugs. PMID- 3838819 TI - A role for prostaglandins in reperfusion-induced myocardial injury? AB - Restoration of flow to hearts made ischemic for 60 min is known to produce accelerated tissue injury. In these studies, reperfusion produced an enhanced enzyme [creatine phosphokinase (CPK) and lactate dehydrogenase] efflux, development of contracture, and reduced mitochondrial oxidative phosphorylation. These effects were associated with prostaglandin (PG) production as measured by 6 keto-PGF1 alpha efflux from the heart. Three nonsteroidal antiinflammatory agents -indomethacin, aspirin, and mefenamic acid--that inhibit the cyclooxygenase dependent conversion of arachidonic acid to PGs reduced most aspects of dysfunction associated with reperfusion. In addition, three glucocorticoids- cortisol, dexamethasone, and methylprednisolone--that prevent substrate availability for cyclooxygenase also significantly decreased CPK efflux, but had variable effects on other parameters. These studies suggest that endogenous PGs produced in the heart may contribute to the dysfunction associated with reperfusion of the ischemic myocardium. PMID- 3838820 TI - [The menopause and bone metabolism]. AB - The author first makes clear the distinction between osteopenia, a physiological phenomenon which occurs in both sexes from the fourth decade onwards, and osteoporosis, which is expressed by spontaneous vertebral compression. Osteoporosis appears when osteopenia progresses below a certain threshold, which is attained more often in the woman than in the aged man. Physiologically osteopenia is accelerated in the woman at the time of, and after, the menopause, and oestrogens are capable of preventing this decline, at least for several years. Calcium therapy slows down the decline by 50%. The inconvenience of oestrogen treatments, their suspensive and provisional character, as well as the lesser efficacy of calcium therapy, should make very useful a practical method for distinguishing subjects who are threatened from those who are not. PMID- 3838821 TI - Widespread distribution of brain dopamine receptors evidenced with [125I]iodosulpride, a highly selective ligand. AB - The new benzamide derivative [125I]iodosulpride is a highly sensitive and selective ligand for D-2 dopamine receptors and displays a very low nonspecific binding to membrane or autoradiographic sections. On autoradiographic images, D-2 receptors are present not only in well-established dopaminergic areas but also, in a discrete manner, in a number of catecholaminergic regions in which the dopaminergic innervation is still unknown, imprecise, or controversial, as in the sensorimotor cerebral cortex or cerebellum. This widespread distribution suggests larger physiological and pathophysiological roles for cerebral dopamine receptors than was previously thought. PMID- 3838822 TI - [Possibilities and limits of the determination of histologic age of continuity ruptures of the knee joint meniscus. A contribution to the pathologic histology of "temporally progressing" meniscus ruptures]. PMID- 3838823 TI - [Complex treatment of stage II-III breast cancer]. PMID- 3838824 TI - Use of the personal computer in clinical research. AB - Personal computers are quickly becoming items of everyday use. More physicians' offices are using computers for billing and patients' records. Others have purchased computers for their word processing capabilities. These computers can be used for archives of medical case records or to collect and collate data for clinical research. This article focuses on how we use a personal computer for organization and management of clinical research projects. Included is a description of how we organize a research project, gather data, write computer programs, enter data into the computer, and generate and display reports. The use of a template program and a personal computer permits creation of individual programs without the aid of a professional programmer. When a single data management program is used, five or six research projects can be carried out at a cost comparable to that of one project using a large computer and professional programmers. PMID- 3838825 TI - The retinopathy of prematurity: medicolegal aspects. AB - The incidence of medicolegal claims based on retinopathy of prematurity (ROP) diminished in the 1960s after the role of oxygen was presumed to be understood. It has since increased again for a number of reasons. More very premature infants are being saved. The causes of ROP are multifactorial, not well understood, and the role of oxygen as a significant factor is not always clear. Moreover, the risk/benefit ratio of supplemental oxygen is not always easy to evaluate. The morphologic features of ROP are common to a number of disorders, which may be misdiagnosed as ROP. In the series of 500 medicolegal claims that I have studied, no ophthalmologists have been sued in cases concerning ROP. However, they are routinely called as expert witnesses and it is to guide them in that role that I am reviewing the subject. PMID- 3838826 TI - A kinetic model describing the interaction of bovine prothrombin fragment 1 with calcium ions. AB - A kinetic model is derived for the interaction of bovine prothrombin fragment 1 with calcium ions. The model requires binding of a minimum of two calcium ions for induction of the observed biphasic fluorescence decrease as a function of time. The model is shown to be consistent with experimental kinetic and equilibrium data by fitting theoretical curves for the biphasic fluorescence change to the data through exact solution of the nonlinear differential rate equations derived from the model. The rate constants for the binding of these two required calcium ions are calculated from the solutions as best fit parameters. The thermodynamic equilibrium constants, K1 and K2, for the binding of these two calcium ions are calculated from ratios of the forward and reverse rate constants as 0.6 X 10(4) and 5.4 X 10(4), respectively. Thus, the model correctly predicts positively cooperative calcium ion binding for at least the two calcium ions required to induce fluorescence quenching. PMID- 3838827 TI - High levels of plasma protein C in nephrotic syndrome. AB - In patients with severe nephrotic syndrome determinations of plasma protein C: Ag levels (8 patients: 5 adults, 3 children) and protein C activity (3 out of 8 patients) revealed significantly elevated plasma protein C concentrations. Furthermore we observed a significant inverse correlation of protein C: Ag to AT III: Ag levels. No protein C: Ag could be detected in the urine of two patients studied. We conclude from our data, that changes of plasma protein C do not contribute to the high thrombotic tendency in nephrotic syndrome. PMID- 3838828 TI - The effect of inhibition of thromboxane synthesis in experimental thrombosis and hemostasis. AB - The effect of a selective inhibitor of thromboxane synthesis (dazoxiben) was evaluated in different acute models for thrombosis and hemostasis. Dazoxiben significantly reduced the thrombogenicity of the modified human umbilical vein (Dardik Biograft) inserted in the carotid artery position in sheep. The effect was evident concerning patency, thrombus weight and platelet accumulation at the distal anastomosis. This paralleled a decreased production of thromboxane in both anastomoses and the midgraft region. Dazoxiben did not reduce either the frequency of jugular vein thrombosis (induced by a combination of endothelial damage and flow restriction) or arteriolar microembolism after laser injury in rabbits. Neither did it influence initial hemostasis as evaluated by measuring the hemostatic plug formation in the rabbit mesenteric microcirculation. It is concluded that thromboxane synthesis inhibition may be of value when attempting to improve the performance of small diameter vascular prostheses, the data obtained indicating a low risk for hemorrhagic complications. PMID- 3838829 TI - Whole blood clot lysis: in vitro modulation by activated protein C. AB - Lysis of clots prepared from native or citrated whole blood as measured by release of 125I fibrinogen degradation products was 10% or less at 20 hours. Lysis of these clots was accelerated by activated protein C in a dose-dependent manner (0.1 to 20 micrograms/ml) from less than 10% to 60-80% at 20 hours. Lysis of clots prepared from native or citrated platelet poor plasma across the same concentration range of activated protein C was less than 15%. Gla-domain-less activated protein C was equally effective in accelerating clot lysis whereas DIP activated protein C or factor Xa did not accelerate clot lysis. This suggested that this action of activated protein C was enzymatic and this this action was limited to protein C among the vitamin K dependent proteins. The unresponsiveness of platelet poor plasma to activated protein C was completely restored to that of whole blood by addition of mononuclear leukocytes. Addition of red corpuscles or platelets alone had no effect on this response, while addition of polymorphonuclear leukocytes partially restored this response. Addition of metabolic inhibitors 2-deoxyglucose and oligomycin inhibited the response of whole blood and of plasma-mononuclear leukocytes to activated protein C. Reconstitution studies of platelet poor plasma made deficient in plasminogen activator and plasminogen showed that accelerated clot lysis produced by mononuclear leukocytes and activated protein C required the presence of plasminogen. We concluded, therefore, that activated protein C accelerates whole blood or plasma-leukocyte clot lysis by modulating activation of the plasminogen system by metabolically active leukocytes. PMID- 3838830 TI - [Comparison of the efficacy of ivermectin in injectable form and as a paste in horses]. AB - A comparison was made of the efficacy of Ivermectin administered as an injection and as a paste. Fourteen horses which were naturally infected with small strongyles were divided into three groups. Animals of group 1 received an injection of 5 ml Ivermectin, equivalent to 500 kg bodyweight, horses of group 2 received one injector with Ivermectin as a paste (for 500 kg body weight), a third group remained untreated as a control. Faecal examinations and larval cultures on the day of treatment and 14, 28 and 42 days later showed that both injection and paste had a 100 percent efficacy against mature and immature small strongyles in these horses. PMID- 3838831 TI - [Treatment possibilities of recurrences of lymphogranulomatosis]. AB - The authors present seven typical cases chosen from a group of thirty patients with recurrent Hodgkin's disease. One out of these patients suffered from two recurrences, five patients from three recurrences each, and one patient from six recurrences. The observation period, beginning with the primary treatment, was between five and 16 years. None of the patients was exclusively irradiated or only treated by cytostatic drugs. Therefore after primary radiotherapy in the stages I to III A, later recurrences could often be successfully treated by an alternating application of cytostatic drugs and repeated radiotherapy. After primary chemotherapy of the advanced primary stages III B to IV B, too, a remission of the second and third recurrence could often be achieved by radiotherapy. Furthermore, the application of alternative schemes such as Holoxan Vepesid has to be taken into account in the treatment of recurrences. The repeated application of C-MOPP after an interval of at least twelve months also produces good rates of response. The present results allow to make the conclusion that a successful treatment of the second and third and even of further recurrences is possible by a combined application of irradiation and cytostatic therapy. PMID- 3838832 TI - Computer-assisted drug assay interpretation based on Bayesian estimation of individual pharmacokinetics: application to lidocaine. AB - A microcomputer program for individualized drug level prediction based on Bayesian forecasting is presented. It is written so that the clinician can integrate patient demographics and drug levels to design a new dosage regimen tailored to an individual patient. The program's great flexibility and robustness make it appropriate for realistic clinical settings. A validation with a data set of lidocaine concentrations measured in 18 patients revealed that the program can predict serum lidocaine levels accurately enough to enhance individual patient dosage adjustment within a few hours after a dosage regimen is started. PMID- 3838833 TI - Relapse of Israeli spotted fever treated with doxycycline. PMID- 3838834 TI - Treatment with ivermectin of cattle naturally infested with Parafilaria bovicola in Burundi. PMID- 3838835 TI - Efficacy of ivermectin against the sucking louse Solenopotes capillatus. PMID- 3838836 TI - Ivermectin treatment of ticks. PMID- 3838837 TI - Efficacy of ivermectin against somatic Strongyloides ransomi larvae. AB - The efficacy of ivermectin against the somatic larval stages of Strongyloides ransomi was evaluated in three trials involving 35 pregnant gilts harbouring induced infections. Treatment at a rate of 300 micrograms/kg bodyweight subcutaneously, four to 16 days before farrowing, was highly effective as judged by counts of larvae in milk and worm burdens of piglets. PMID- 3838838 TI - Experimental studies of sperm transport in sheep, cows and pigs. PMID- 3838839 TI - Picrotoxin, the antidote to ivermectin in dogs? PMID- 3838840 TI - [A case of prolonged course of gastric lymphosarcoma]. PMID- 3838841 TI - [Health resort treatment of patients with the postcholecystectomy syndrome]. PMID- 3838842 TI - [Calculation of main hemodynamic indicators by a computer]. PMID- 3838843 TI - [Role of the duodenum in the pathogenesis of the postcholecystectomy syndrome]. PMID- 3838845 TI - [Venereal transmission of hepatitis B]. PMID- 3838844 TI - [Thrombosis of a St. Jude Medical valve in malignant lymphoma and extensive blood vessel malformation]. AB - We present a case of thrombosis of a St. Jude Medical valve in mitral position at the time of manifestation of an acute malignant lymphoma. Since valve thrombosis and the onset of acute malignant lymphoma appeared simultaneously, we conclude that the malignant lymphoma may have been the cause of valve thrombosis. In our case report we discuss the genesis and prophylaxis of valve thrombosis during malignant disease. PMID- 3838846 TI - The value of spectrofluorometry for the diagnosis of contagious equine metritis. PMID- 3838847 TI - [Heterogeneity of monoclonal antibody affinity]. AB - In experiments with Pasteurella pestis monovalent capsular antigen and hybridoma monoclonal antibodies obtained after cloning and recloning the heterogeneity of the active centers of antibodies with respect to their affinity was revealed. In ascitic fluids obtained from the animals inoculated with different hybridoma clones 5 groups of antibodies, differing in their affinity, were determined in each fluid sample. PMID- 3838848 TI - A quantitative assessment of myelin sheaths in the peripheral nerves of dystrophic, quaking, and trembler mutants. AB - If myelin sheaths are relatively thin for axon caliber, this is generally taken as a sign of insufficient myelin formation. However, recent studies have shown that sheath thickness relates not only to axon caliber; the relative length of the internode is also important. Foreshortened internodes have slightly thinner sheaths than long internodes of the same fiber caliber (Friede and Bischhausen 1982). In the present study we compared sheath thickness with internode geometry in the sciatic fibers of three murine mutants, the Dystrophic, Quaking and Trembler mice, using a new computer-assisted method. A quantitative correspondence was found between abnormally thin sheaths and internode foreshortening. The magnitude of the changes was the same as that found previously in normal and regenerated fiber populations. The data show that the geometric proportions of internodes cannot be ignored when assessing sheath thickness, and they also shed some new light on the mechanisms which produce abnormally thin sheaths. PMID- 3838849 TI - Post-natal development of protein C in full-term newborns. AB - The purpose of this study was to determine the concentration of Protein C in the blood of full-term healthy newborns. The levels of Protein C, evaluated by electroimmunoassay, were low in the first 5 days of life and lower than the critical adult thrombotic level. The antigenic activity increased progressively from the 2nd week of life and the adult values were reached after the 6th month. The reduction of Protein C levels may impair the ability of the newborn to control consumptive disorders, thus exposing the infants to the risk of thrombotic conditions in neonatal age. PMID- 3838850 TI - Intrathecal administration of human leukocyte interferon to a patient with subacute sclerosing panencephalitis. AB - An eight-year-old boy with subacute sclerosing panencephalitis was treated with human leukocyte interferon (HuIFN-alpha) by intravenous and intrathecal injections. We observed some remarkable improvements in his clinical course. PMID- 3838851 TI - Pre- and postjunctional effects of NPY on sympathetic control of rat femoral artery. PMID- 3838852 TI - Hodgkin's disease, intracranial involvement. Report of a case and review of the literature. AB - Intracranial hodgkin's disease, an extremely uncommon finding, is reported in a 21-year-old man. This diagnosis, confirmed histologically, occurred in the presence of recurrent systemic disease, mixed cellularity type, which is typical for patients who have developed this complication. Review of the reported cases suggests there may be increasing incidence of intracranial involvement of Hodgkin's disease. PMID- 3838853 TI - A case report of malignant lymphoma with Hashimoto's thyroiditis. AB - The authors studied a case of malignant lymphoma arising in a patient with Hashimoto's thyroiditis. Histologically, a malignant, large cell, immunoblastic lymphoma was revealed, with the surrounding area showing changes typical of Hashimoto's thyroiditis. Immunoperoxidase staining proved the lymphoma cells to have intracytoplasmic immunoglobulins (IgA, k). Infiltrating interfollicular plasma cells containing the same kind of intracytoplasmic immunoglobulins (IgA, k) were present in the surrounding Hashimoto's thyroiditis lesions. Thus, it is possible that the interfollicular infiltrating plasma cells evolved into a malignant lymphoma in this case of Hashimoto's thyroiditis. PMID- 3838854 TI - Human lymphoblastoid interferon treatment of Kaposi's sarcoma in the acquired immune deficiency syndrome. Clinical response and prognostic parameters. AB - Thirty consecutive patients with the acquired immune deficiency syndrome were treated with intramuscular human lymphoblastoid interferon for Kaposi's sarcoma. Patients were divided into three groups receiving 7.5 million units/m2 per day, 15 million units/m2 per day, or 25 million units/m2 per day for 28 days. Because of dose-limiting toxicity in the highest dose group, all patients received between 6 and 15 million units/m2 per day. There were three partial responses and four minor responses. The responses were not dependent on drug dose, but did correlate with higher total lymphocyte and OKT4-positive lymphocyte numbers and absence of prior opportunistic infection. Patients who had endogenous acid-labile alpha-interferon prior to therapy were more likely to have progressive disease during interferon administration. PMID- 3838855 TI - Distal renal tubular acidosis and lymphocytic thyroiditis with spontaneously resolving hyperthyroidism. Report of 1 case without nephrocalcinosis. AB - In a 33-year-old woman concurrence of a complete distal renal tubular acidosis (RTA) and lymphocytic thyroiditis with spontaneously resolving hyperthyroidism was observed. Until recently, the rare association of RTA and hyperthyroidism had been thought to be governed by nephrocalcinosis, via hypercalcemia and hypercalciuria. However, in this case, nephrocalcinosis was not present, but there were histological signs of renal interstitial mononuclear cell infiltration, and the RTA persisted despite the resolution of the hyperthyroidism. This observation supports the idea that immunological mechanisms may relate RTA and hyperthyroidism when the latter has an autoimmune origin. PMID- 3838856 TI - Computerized analysis of the Farnsworth-Munsell 100-Hue test. AB - The method proposed by Farnsworth for scoring the 100-Hue test is reviewed, and measures of the orientation and strength of the error axis are proposed. The error axis and its magnitude are determined by the phase and amplitude, respectively, of the best-fit sinusoid to the function that results from Kitahara's transformation of the subject's arrangement of the colors. In addition, a computer program, written in BASIC, that scores the 100-Hue test according to those methods is described, and a listing of that program is provided in the Appendix. PMID- 3838857 TI - Lectin binding to human gastric adenocarcinomas and adjacent tissues. AB - The binding of lectins to paraffin sections of nine gastric carcinomas and adjacent mucosa was examined by fluorescence microscopy. A battery of nine lectins was employed, and both intestinal and diffusely infiltrating tumors were tested. Wheat germ agglutinin and Ricinus communis agglutinin I appeared to bind to both mucus and nonmucus glycoproteins; these lectins labeled tumor cells, benign epithelial cells, and nonepithelial tissues strongly and consistently. Peanut agglutin, soybean agglutinin, Dolichos biflorus agglutinin, Bandeiraea simpifolica agglutinin, and Ulex europaeus agglutinin I bound extensively to mucosubstances in vacuoles and apices of benign epithelial cells but often bound to tumor cells focally and in some cases not at all. Neuraminidase digestion enhanced lectin staining in some tumors; but in others, especially those of the diffusely infiltrating type, neuraminidase digestion did not enhance the staining of tumor cells. The results suggest that the decrease in the proportion of tumor cells labeling with lectin relative to superficial epithelial cells can be due either to the oversialylation of mucoproteins or to the loss of glycosylating enzyme activity. Concanavalin A did not bind to mucosubstances in the vacuoles or apices of benign epithelium, but bound to mucus vacuoles of metaplastic epithelium and to coarse cytoplasmic granules in two of the tumors examined. This suggests either the abnormal addition of mannose to mucus glycoprotein or the production of a distinct glycoprotein by some gastric tumors. PMID- 3838858 TI - Effect of PTH on blood pressure and response to vasoconstrictor agonists. AB - Parathyroid hormone (PTH) is known to be a vasodilator and to exert a hypotensive action. The present study examined the possible mechanisms involved, with special emphasis on the role of vasodilatory prostaglandins. The effects of the intact 1 84 PTH and that of its amino-terminal 1-34 fragment on mean arterial pressure (MAP) and on the vascular response to norepinephrine (NE) or angiotensin II (ANG II) were examined in rats before and after pretreatment with indomethacin. Bolus injections of 30 U of both 1-84 and 1-34 PTH produced a significant (P less than 0.01) decrease in MAP; however, the hypotensive response to 1-34 PTH (-28 +/- 4.6 mmHg) was more marked (P less than 0.01) than to 1-84 PTH (-9 +/- 1.8 mmHg). The infusion of 1-84 PTH (30 U/h) did not alter MAP, whereas the infusion of 1-34 PTH (30 U/h) led to a decrease in MAP from 124 +/- 2 to 103 +/- 4.0 mmHg (P less than 0.01) and to a rise in heart rate from 359 +/- 30 to 437 +/- 13 beats/min (P less than 0.02). Both 1-84 and 1-34 PTH antagonized the pressor effects produced by bolus injections of NE and ANG II. Pretreatment with indomethacin (5 mg/kg body wt) abolished the inhibitory effect of 1-84 and 1-34 PTH on the response of MAP to NE and ANG II and the hypotensive action of 1-34 PTH. Infusion of 1-84 and 1 34 PTH produced a significant rise in urinary excretion of 6-keto-PGF1 alpha.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838859 TI - Inhibition of H+ secretion by lectins in turtle bladder: role of a cell type on acidification. AB - Because certain lectins have been shown to bind to the intercalated cell of the cortical collecting tubule, we investigated the effect of concanavalin A and wheat germ agglutinin on urinary acidification in isolated turtle bladders. After addition to the mucosal but not serosal fluid, concanavalin A and wheat germ agglutinin decreased H+ secretion in a dose-dependent manner, and these effects were specifically inhibited by the competitive antagonists of concanavalin A (alpha-methyl-D-mannoside) and of wheat germ agglutinin (N-acetylglucosamine). Concanavalin A decreased H+ secretion by decreasing both the proton motive force and the active conductance of protons. Although electroneutral HCO3 secretion was not inhibited by either lectin, Na transport was decreased by 18 and 25%, respectively, after concanavalin A and wheat germ agglutinin. Concanavalin A failed to inhibit O2 consumption by the granular cell fraction but significantly inhibited O2 consumption by the carbonic anhydrase rich cell fraction. Morphological studies utilizing peroxidase or fluorescein-labeled concanavalin A showed that concanavalin A stained one cell type and that this staining was specific since it could be blocked by the competitive antagonist alpha-methyl-D mannoside. Studies utilizing double labeling with fluorescein concanavalin A and acridine orange suggested that both probes stain the same cell type. The data strongly suggest that concanavalin A interacts specifically with the cell responsible for H+ secretion. PMID- 3838860 TI - Cytodestructive mechanisms provoked by food antigens. II. Antibody-dependent, allergic autocytotoxicity. AB - Antibody-dependent, allergic autocytotoxicity (ACT) is an in vitro process through which WBC from patients and/or controls, passively sensitized with RAST positive serum, are damaged in the presence of corresponding food antigens. Studies among 13 patients, sensitive to cow milk, corn and wheat, and 13 asymptomatic controls revealed that antibody-dependent ACT is mediated by thermolabile cytotoxic factor, presumably IgE antibody. The resultant cellular interactions might contribute to the induction of the autoimmune response. PMID- 3838861 TI - Application of microcomputers to the interpretation of high-resolution nuclear magnetic resonance spectra of asparagine-linked oligosaccharides: evaluation of high-mannose structures. AB - A microcomputer program for determining primary oligosaccharide structures by high-resolution nuclear magnetic resonance is reported. The program uses the data base obtained from spectra of model compounds reported in the literature. A number of high-mannose-type asparagine-linked glycopeptide spectra containing tabulated chemical shifts measured at room temperature were tested to determine the ability of the computer to correctly assign carbohydrate units into a complete structure. High-mannose structures ranging from five to nine oligomannosyl units were completely and unambiguously analyzed to give complete structural assignments. The computer program will also resolve glycopeptide mixtures. The method provides investigators with a useful tool for accurately evaluating nuclear magnetic resonance spectra and should greatly facilitate the complicated and time-consuming evaluation of microheterogeneity in samples commonly isolated from biological systems. PMID- 3838862 TI - Distribution of lectin binding sites in rabbit oviduct. AB - The carbohydrate histochemistry of the rabbit oviduct has been examined by the use of four lectins conjugated with horseradish peroxidase as histochemical reagents. Each lectin gave a very distinct typical pattern of binding, but for each lectin there was no difference between the distribution of binding sites in ampulla and isthmus. Wheat germ lectin bound exclusively with the connective tissue of the oviduct folds; winged pea lectin was detected only in the ciliated cells; peanut lectin binding sites were visualized in the secretory cells; the binding reactivity of soybean lectin was limited to the basal part of the cilia. Although it is very difficult at present to correlate the distribution of lectin binding sites with the function of the positive cells, some hypotheses have been advanced. PMID- 3838863 TI - Fentanyl does not inhibit fertilization or early development of sea urchin eggs. AB - Sea urchin (Lytechinus variegatus) eggs have been used to study the effects of fentanyl on in vitro fertilization and early development as a model of human in vitro fertilization. Fentanyl did not affect fertilization or subsequent cell division when present in concentrations calculated to approximate or exceed those to which human ora would be exposed during clinical anesthesia. Lytechinus eggs exposed to fentanyl, then washed in fentanyl-free sea water before fertilization were also not affected and divided normally. The results suggest potential clinical utility of fentanyl during the harvesting of human ova for subsequent in vitro fertilization. PMID- 3838864 TI - Enzymatic hydrolysis of atracurium in vivo. AB - Inactivation of atracurium in vivo has been postulated to proceed along two pathways: Hofmann elimination and ester hydrolysis. Since an end product of Hofmann elimination (acrylate) may be potentially toxic, the authors conducted a study to determine the extent of degradation via enzyme-catalyzed hydrolysis relative to that via Hofmann elimination. The enzyme carboxylesterase was inhibited by the pretreatment of rats with an organophosphorous compound, triorthotolyl phosphate (TOTP). Skeletal muscle relaxation produced either by d tubocurarine or succinylcholine was not influenced by the pretreatment. This indicates that TOTP does not alter directly the paralyzing properties of either depolarizing or nondepolarizing muscle relaxants. Relaxation produced by atracurium, however, was prolonged markedly and the rate of recovery from relaxation was decreased. The authors conclude: 1) enzyme-catalyzed hydrolysis is probably responsible for the short duration of action of atracurium; 2) Hofmann elimination, at least in rats, probably is not the principal degradation pathway; and 3) the opportunity for in vivo generation of large amounts of potentially toxic end products is less than previously implied. PMID- 3838865 TI - Potency of atracurium: a comparison of single dose and cumulative dose techniques. PMID- 3838867 TI - Comparative efficacy of injection routes and doses of ivermectin against Psoroptes in rabbits. AB - Rabbits infested with Psoroptes ovis (Hering) or with P cuniculi (Delafond) were injected IM or subcutaneously with ivermectin or with vehicle. A single injection of ivermectin (200 micrograms/kg) either IM or subcutaneously was inadequate to eliminate all mites in the ears of the rabbits. However, a single injection of ivermectin at 400 micrograms/kg, regardless of the route of injection, eliminated all P cuniculi mites, but eliminated P ovis mites in only 50% of the rabbits. Ivermectin was more effective against P cuniculi than against P ovis at both doses tested, regardless of the route of injection. PMID- 3838866 TI - [Complex intensive therapy of postoperative paralytic ileus in obstetrical and gynecological patients]. PMID- 3838868 TI - Calibration of computer-assisted (Respicomp) respiratory inductive plethysmography in newborns. AB - We investigated the accuracy of a computer-assisted, respiratory inductive plethysmograph (Respicomp) on 50 awake human newborns who were lying supine. Breaths were selected with different rib cage (RC) to pneumotach (PNT) and abdomen (AB) to pneumotach (PNT) values. The equation RC/PNT + AB/PNT = 1 was solved using the least squares method (LSQ) of calculation of calibration factors. Validation of the calibration factors was performed with a range of consecutive breaths between 6 and 22. Of the 1,128 validation or revalidation breaths, 628 (56%) were within 10% of the simultaneously measured PNT volume, 1,024 (91%) were within 20%, and 1,128 (100%) were within 30%. The RC or AB compartment contributions to ventilation changed spontaneously in the awake newborns. This change eliminated the need to wait for varying sleep states to obtain calibration factors and reduced total time required for calibration. (Some loss of accuracy is a compromise with this method; the calibration factors obtained do not remain accurate while the infant is asleep.) This method provided a reliable and rapid calibration and validation technique of the respiratory inductive plethysmograph (Respicomp) on awake newborns. PMID- 3838869 TI - Antibiotic usage for methicillin-resistant Staphylococcus mycotic aneurysms. AB - Methicillin-resistant Staphylococcus aureus (MRSA) is increasing in incidence due to widespread use of cephalosporin antibiotics. These infections, generally, are characteristically hospital acquired and related to antibiotic pressure. The appearance of community acquired MRSA has recently been observed among IV drug abusers (IVDA). The duration and type of antibiotic therapy is controversial. Twenty patients with IVDA related mycotic aneurysms and associated soft tissue infections were evaluated. Particular attention was given to the bacteria cultured, the antibiotic therapy used and the response to therapy. Antibiotic use was inconsistent. Thirty per cent of the patients received no antibiotics. Although 62 per cent of the Staphylococcus aureus infections in this group were methicillin-resistant and quite extensive, the antibiotics used had no clinical importance. The need for vancomycin as therapy for extensive soft tissue infections with MRSA may be overrated and probably contributes to the development of increasing antibiotic resistance. PMID- 3838870 TI - Audiological results with two single channel cochlear implants. AB - We tested six patients with single channel cochlear implants on several tests from the Minimal Auditory Capabilities battery and the Iowa Cochlear Implant Tests. All patients were able to discriminate some everyday sounds and to identify the number of syllables in the words presented. Five patients were able to identify speaker sex reliably. Surprisingly, some patients had difficulty discriminating between a modulated noise and a voice or between a question and a statement or identifying the accented word in a sentence. On several audiovisual tests, an improvement was observed for the sound plus vision condition compared to the vision only condition. This was particularly true for sentence tests, but was not uniform across patients or across tests. PMID- 3838871 TI - Human T-cell receptor beta-chain genes. AB - cDNA clones encoding the beta chain of the T-cell antigen receptor from the human leukaemic cell line JM (which extend through the constant region and into the variable region of the receptor) show hybridization only to RNA from JM cells, and not in five other T-cell leukaemias. Multiple hybridizing bands were detected in genomic DNA digests by a V beta probe, suggesting that inherited V beta gene diversity will be significant. Two beta-chain constant region genes (designated C beta 1 and C beta 2) occur in human genomic DNA, and both of these genes are capable of rearrangement in T-cell DNA. When the downstream C beta 2 gene is rearranged, deletion of the C beta 1 gene can occur. These characteristics of rearrangement and deletion of beta-chain genes show analogies to the immunoglobulin gene loci. PMID- 3838872 TI - New cephalosporins cefotaxime, cefpimizole, BMY 28142, and HR 810 in experimental pneumococcal meningitis in rabbits. AB - Four new cephalosporins, cefotaxime, cefpimizole (U 63196E), BMY 28142, and HR 810 were evaluated in experimental pneumococcal meningitis. Cefotaxime penetrated only moderately into the cerebrospinal fluid of rabbits with meningitis, whereas cefpimizole, BMY 28142, and HR 810 all exhibited unusually good penetration. The bactericidal activity in infected cerebrospinal fluid was comparable for the four drugs. PMID- 3838873 TI - Dietary fat intake and taste responses to fat in milk by under-, normal, and overweight women. AB - Dietary fat intake, with special emphasis on dairy products, was estimated from questionnaires for 42 underweight, 80 normal weight, and 64 overweight adult women. Frequency of consumption of fresh and processed meats, frozen dairy desserts, pastries, and snacks such as potato chips was greater for the overweight than for the underweight subjects. However, preferences between verbally-described high- and low-fat versions of 14 food pairs did not differ by body size. Overweight subjects reported that they consumed more non-fat milk and less whole milk than did the other groups. Discrimination, perceived intensity, paired preference, and hedonic rating of fat in milk and in chocolate milk did not differ significantly according to body size, fat intake, or type of milk consumed. Ad libitum mixing of non-fat milk and "half and half" (12% fat) to individual levels of liking also showed no significant variation with body size. However, subjects with higher dietary fat intakes mixed to higher fat-preference levels in milk than did the low- and medium-fat intake subjects. Those reporting consumption of regular milk (3.5% fat) mixed to higher fat levels than did those who consumed low-fat (2% fat) or non-fat milk. The ad libitum procedure gave better reproducibility and appeared to be a more realistic measure of liking than the hedonic rating or paired-preference tests. PMID- 3838874 TI - Amino acid sequence of the phosphorylation site of bovine cardiac myosin light chain. AB - Amino acid sequences of peptides containing the phosphorylation site of bovine cardiac myosin light chain (L2) were determined. The site was localized to a serine residue in the tentative amino terminus of the light chain and is homologous to phosphorylation sites in other myosin light chains. Phosphorylation of bovine cardiac light chain by chicken gizzard myosin light chain kinase was Ca2+-calmodulin dependent. Kinetic data gave a Km of 107; microM and a Vmax of 23.6 mumol min-1 mg-1. In contrast to what has been observed with smooth muscle light chains, neither the phosphorylation site fragment of the cardiac light chain nor a synthetic tetradecapeptide containing the phosphorylation site were effectively phosphorylated by the chicken gizzard kinase. Phosphorylation of cardiac myosin light chains by chicken gizzard myosin light chain kinase, therefore, requires other regions of the light chain in addition to a phosphate acceptor site. PMID- 3838876 TI - Location of glomerular lesions in focal segmental glomerulosclerosis. PMID- 3838875 TI - Effect of hyperthyroidism and its treatment on bone mineral content. AB - Patients with hyperthyroidism may develop osteopenia associated with fractures; however, there has been no general agreement on the incidence of osteopenia in hyperthyroidism or the recovery of the mineral loss after treatment of hyperthyroidism. We conducted a longitudinal prospective study on the effect of hyperthyroidism and its treatment on bone mineral content (BMC) using photon absorptiometry. We observed that both young and older hyperthyroid patients showed a significantly decreased baseline BMC compared with age- and sex-matched controls. We also observed a slight recovery of BMC in hyperthyroid patients at the two-year interval after a euthyroid state had been achieved. However, the BMC was still much lower than that of controls, and we did not find any significant restoration of BMC following "cure" of hyperthyroidism. PMID- 3838877 TI - Accuracy in clinical laboratories participating in regional quality control programs. AB - Few studies have assessed analytic bias (accuracy) in clinical chemistry laboratories. Using the data base of a large regional quality control program, we studied, during a six-year period, analytic bias of participant "all-methods" results, as well as selected commonly used individual methods, for calcium, cholesterol, glucose, potassium, and sodium. Analytic bias was assessed by comparison with "benchmark" measurements by United States Bureau of Standards definitive methods and/or United States Centers for Disease Control clinical reference methods. The all-methods bias at selected clinically relevant analyte levels was +0.1% at 10 mg/dL for calcium; -0.7% for cholesterol at 200 mg/dL; +4.5% for glucose at 120 mg/dL; +0.5% for potassium at 4 mmole/L; and 0% for sodium at 145 mmole/L. There was sufficient agreement between benchmark and participant all-methods results for these analytes to suggest that the all methods results may be useful analytic bias benchmarks in future regional quality control programs that use similar lyophilized human serum pools. PMID- 3838878 TI - Transfer data. A proposed international standard for interlaboratory information exchange. AB - Clinical laboratory information is composed of descriptive terms and corresponding codes that define patients, specimens, and tests. These basic units of information, or data elements, assume literal character content and sequences in clinical laboratory computer files and messages. The growing international use of computers for scientific data transfer highlights the need for standardized coding conventions that eliminate the ambiguities of language and scientific terminology. An international symposium of the Commission on World Standards of the World Association of Societies of Pathology recommends that international consensus standards be developed to insure the accurate transfer of scientific data between clinical laboratory computers while maintaining strict subject confidentiality. It is anticipated that such standards would be widely applicable to the storage and retrieval of medical information in computers throughout the world. PMID- 3838879 TI - Duplication of the pituitary gland and spinal cord. AB - Multiple malformations, including duplication of the pituitary gland, stalk, and infundibulum, and complex duplication of the spinal cord were observed in a female infant. The problems of classification of the spinal cord duplications are discussed, and the role of the notochord in the formation of double organs is proposed. PMID- 3838880 TI - Multiple cerebral defects in an infant exposed in utero to anticonvulsants. AB - A female infant exposed in utero to anticonvulsant therapy had bilateral encephaloceles, ventricular abnormalities, and defective neuronal migration. This is one of a few articles with pathologic data available that discusses central nervous system involvement in infants exposed to anticonvulsants. PMID- 3838881 TI - Pulmonary alveolar proteinosis in the newborn. AB - A newborn presented with respiratory distress syndrome that was felt to be both clinically and roentgenographically typical of hyaline membrane disease. At autopsy, the lungs were firm, dry, and bulky, and sections from all lobes revealed mucin-negative, periodic acid-Schiff-positive, diastase-resistant material typical of pulmonary alveolar proteinosis. Electron microscopy documented the lamellar structure of the intra-alveolar material. There was no clinical or autopsy evidence of immunodeficiency. PMID- 3838882 TI - Neuronal colonic dysplasia associated with short-segment Hirschsprung's disease. A possible cause of therapeutic failure. AB - We describe two cases of short-segment Hirschsprung's disease associated with neuronal colonic dysplasia. The recurrence of postoperative symptoms of bowel obstruction may be due to the combined occurrence of these two disorders. PMID- 3838883 TI - Evaluation of an automated method for leukocyte differential counts based on electronic volume analysis. AB - An electronic blood cell counter (Coulter S-plus IV) classifies leukocytes as lymphocytes, large mononuclear cells, or granulocytes based on volume after treatment with a reagent. Correlation coefficients as compared with stained film microscopy are .94 for lymphocytes, .91 for granulocytes, and .49 for mononuclear cells. As a screening tool, it could reduce the number of traditional manual differential cell counts. We devised criteria for identifying those specimens requiring additional visual examination, giving particular attention to "low density" abnormalities. Over 2,200 specimens were studied. Among 791 specimens obtained primarily from inpatients, the screening procedure yielded 267 true positive, 298 false-positive, 213 true-negative, and 13 false-negative specimens. The 1,216 specimens obtained primarily from outpatients included 54 true positive, 234 false-positive, 912 true-negative, and 16 false-negative specimens. All false-negative specimens represented low-density abnormalities. The usefulness of this approach is partially dependent on patient population. PMID- 3838884 TI - Effects of ethyl alcohol on human peripheral lymphocytes. AB - Chronic alcoholics are more susceptible to infection and have increased incidences of certain types of carcinomas. One explanation for this may be suppressed immune responses secondary to ethyl alcohol consumption. This project was initiated to study the effect of ethyl alcohol on lymphocyte responses in vitro by monitoring tritiated thymidine uptake. Lymphocytes were incubated in the presence of phytohemagglutinin-P, concanavalin A, and pokeweed mitogen. The response of normal lymphocytes was noted after mitogen stimulation in the presence of ethyl alcohol in graded doses. Ethyl alcohol levels greater than or equal to 50 mg/dL suppressed tritiated thymidine uptake of normal lymphocytes for phytohemagglutinin-P and concanavalin A. Since ethyl alcohol exposure in concentrations consistent with blood levels that may be attained during routine ingestion significantly decreased lymphocyte blastogenesis, it is speculated that chronic ethyl alcohol ingestion may alter immune surveillance sufficiently to be responsible in part for the increased incidence of infection and/or neoplasms seen in alcoholic subjects. PMID- 3838885 TI - Formaldehyde-induced fluorescence in melanomas and other lesions. Diagnostic significance and mechanism of fluorescence. AB - We have investigated 40 cases of malignant melanoma (MM) and 81 other lesions including benign melanocytic neoplasms, other malignancies with a potential for confusion with MM, and tissues with biogenic amine-synthesizing apparatus for induction of formaldehyde-induced fluorescence (FIF). Unstained sections were examined with an ultraviolet light source for yellowish fluorescence. Twenty-four of 27 primary cutaneous MMs and 11 of 13 metastatic MMs were positive. Formaldehyde-induced fluorescence was quenched by prior sodium borohydride treatment, suggesting monoamine origin. None of the ten intradermal, five junctional, or three blue nevi showed FIF, but two of eight compound nevi and two of six spindle cell nevi were positive for FIF. One of six large-cell undifferentiated carcinomas was positive; none of six mesenchymal sarcomas were positive; one of seven histiocytic lymphomas showed weak, granular, cytoplasmic fluorescence. Two of five carcinoid tumors and one case of medullary carcinoma of thyroid showed FIF. We conclude that FIF is a simple, reproducible, technique for aiding in the diagnosis of amelanotic melanomas. PMID- 3838886 TI - Widespread mucous metaplasia of the urinary bladder with nephrogenic adenoma. AB - We describe widespread metaplastic changes observed in nonexstrophic urinary bladder mucosa in a 32-year-old man. Extensive areas of the luminal surface were covered by two types of metaplastic epithelium. One type was bilayered while the other was single layered with columnar cells of varying electron density as well as mucus-secreting cells. An area of adenomatoid metaplasia was also observed. PMID- 3838887 TI - Clumping of erythroblasts simulating a metastatic neoplasm. AB - I describe an unusual case of artifactual clumping of erythroid cells in aspirated bone marrow particles, simulating a metastatic malignant small cell neoplasm. This was felt to be due to a combination of the technique of preparation of the smears, as well as a possible immunologic phenomenon secondary to the presence of membrane-bound antibody. The patient's peripheral red blood cells were shown to be coated with an IgG-specific antibody, possibly drug induced. PMID- 3838888 TI - Left pontine lipoma. AB - A 47-year-old man, with no significant medical history was found to have a lipoma on the left dorsolateral surface of the rostral pons during autopsy. The cause of death was arteriosclerotic heart disease, with the lipoma being an incidental finding. Neurologic lesions are being found more frequently due to computed tomography; it should also be expected that asymptomatic neurologic lesions will be found more frequently due to expansion of medical examiner systems in the United States. PMID- 3838889 TI - Polypoid traumatic neuroma of the gallbladder. AB - We report a case of polypoid traumatic (amputation) neuroma incidentally found in a gallbladder resected for cholelithiasis. This traumatic neuroma may have developed as the result of injury to the gallbladder during an unsuccessful cholecystectomy performed 20 years previously. Traumatic neuromas are known to arise at the stump of the cystic bile duct after cholecystectomy, but, to our knowledge, there seem to be no previous reports of traumatic neuromas arising in the gallbladder. PMID- 3838890 TI - An individualized approach to orbital decompression in Graves' orbitopathy. AB - With better understanding of the various techniques available for orbital decompression, the indications for surgical decompression in Graves' orbitopathy are now less rigid. Decompressions may be performed for (1) prolonged orbital congestion and pain, (2) orbital problems resistant to steroid treatment, (3) orbital problems where there have been steroid complications, (4) severe corneal exposure that cannot be treated with lid-lengthening surgery, and (5) the standard indication--Graves' optic neuropathy. Assessment of muscle size by computed tomographic scanning and ultrasound, as well as the measurement of orbital pressure, are important advances in the assessment of these patients. The lateral approach produces less strabismus and allows for exophthalmos reduction, especially if fascia temporalis is incised and if part of that muscle is removed. The inferomedial approach is advisable in patients with severe posterior optic neuropathy caused by apical crowding of the enlarged muscles, particularly the medial rectus. The two approaches may be combined in severe cases. PMID- 3838891 TI - Irreversible inhibition of delta 5-3-oxosteroid isomerase by 2-substituted progesterones. AB - 2 alpha-Cyanoprogesterone (I) and 2-hydroxymethyleneprogesterone (II) were synthesized and screened as irreversible active-site-directed inhibitors of the delta 5-3-oxosteroid isomerase (EC 5.3.3.1) from Pseudomonas testosteroni. Both compounds were found to inhibit the purified bacterial enzyme in a time-dependent manner. In either case the inactivated enzyme could be dialysed without return of activity, indicating that a stable covalent bond had formed between the inhibitor and the enzyme. Inactivation mediated by compounds (I) and (II) followed pseudo first-order kinetics, and at higher inhibitor concentrations saturation was observed. The competitive inhibitor 17 beta-oestradiol offered protection against the inactivation mediated by both compounds, and initial-rate studies indicated that compounds (I) and (II) can also act as competitive inhibitors yielding Ki values identical with those generated during inactivation experiments. 2 alpha Cyanoprogesterone (I) and 2-hydroxymethyleneprogesterone (II) thus appear to be active-site-directed. To compare the reactivity of these 2-substituted progesterones with other irreversible inhibitors of the isomerase, 3 beta-spiro oxiranyl-5 alpha-pregnan-20 beta-ol (III) was synthesized as the C21 analogue of 3 beta-spiro-oxiranyl-5 alpha-androstan-17 beta-ol, which is a potent inactivator of the isomerase [Pollack, Kayser & Bevins (1979) Biochem. Biophys. Res. Commun. 91, 783-790]. Comparison of the bimolecular rate constants for inactivation (k+3/Ki) mediated by compounds (I)-(III) indicated the following order of reactivity: (III) greater than (II) greater than (I). 2-Mercaptoethanol offers complete protection against the inactivation of the isomerase mediated by 2 alpha cyanoprogesterone (I). Under the conditions of inactivation compound (I) appears to be completely stable, and no evidence could be obtained for enolate ion formation in the presence or absence of enzyme. It is suggested that cyanoprogesterone inactivates the isomerase after direct nucleophilic attack at the electropositive 2-position, and that tautomerization plays no role in the inactivation event. By contrast, 2-mercaptoethanol offers no protection against the inactivation mediated by 2-hydroxymethyleneprogesterone, and under the conditions of inactivation this compound appears to exist in the semi-enolized form. PMID- 3838892 TI - Low immunogenicity of the common lipoamide dehydrogenase subunit (E3) of mammalian pyruvate dehydrogenase and 2-oxoglutarate dehydrogenase multienzyme complexes. AB - The production of high-titre monospecific polyclonal antibodies against the purified pyruvate dehydrogenase and 2-oxoglutarate dehydrogenase multienzyme complexes from ox heart is described. The specificity of these antisera and their precise reactivities with the individual components of the complexes were examined by immunoblotting techniques. All the subunits of the pyruvate dehydrogenase and 2-oxoglutarate dehydrogenase complexes were strongly antigenic, with the exception of the common lipoamide dehydrogenase component (E3). The titre of antibodies raised against E3 was, in both cases, less than 2% of that of the other subunits. Specific immunoprecipitation of the dissociated N [3H]ethylmaleimide-labelled enzymes also revealed that E3 alone was absent from the final immune complexes. Strong cross-reactivity with the enzyme present in rat liver (BRL) and ox kidney (NBL-1) cell lines was observed when the antibody against ox heart pyruvate dehydrogenase was utilized to challenge crude subcellular extracts. The immunoblotting patterns again lacked the lipoamide dehydrogenase band, also revealing differences in the apparent Mr of the lipoate acetyltransferase subunit (E2) from ox kidney and rat liver. The additional 50 000-Mr polypeptide, previously found to be associated with the pyruvate dehydrogenase complex, was apparently not a proteolytic fragment of E2 or E3, since it could be detected as a normal component in boiled sodium dodecyl sulphate extracts of whole cells. The low immunogenicity of the lipoamide dehydrogenase polypeptide may be attributed to a high degree of conservation of its primary sequence and hence tertiary structure during evolution. PMID- 3838893 TI - Studies on the inhibition of ferrochelatase by N-alkylated dicarboxylic porphyrins. Steric factors involved and evidence that the inhibition is reversible. AB - The structural requirements for the inhibition of ferrochelatase by N-alkylated porphyrins were investigated and experiments carried out to explore the mechanism of enzyme inhibition. Three dicarboxylic porphyrins, all substrates of the enzyme, are strongly inhibitory when N-alkylated; in contrast, uroporphyrin and coproporphyrin (which are not substrates) do not inhibit after N-alkylation. Free carboxylic acid functions are required for inhibition, as the methyl ester derivatives are not themselves inhibitory. Porphyrins bearing the alkyl group on the pyrrole nitrogen of rings C and D are less effective inhibitors, particularly when zinc is chelated in the centre of the tetrapyrrole or the N-alkyl group is relatively large in size. The substituents at the 2- and 4-positions of the porphyrin system may also affect the inhibitory activity, particularly for the isomers with ring C and D alkylated. The zinc chelates of several N alkylprotoporphyrins are inhibitory towards haem oxygenase, another haem-binding enzyme, and also in this case increasing the size of the alkyl group decreased the inhibitory activity, particularly for isomers with ring C or D alkylated. The inhibition could be reversed by prolonged incubation with excess porphyrin substrate, but dealkylation of the N-alkylporphyrin during enzyme inhibition could not be demonstrated. It is concluded (a) that N-alkylated dicarboxylic porphyrins compete reversibly with the porphyrin substrate for the enzyme active site and (b) that the structural and steric factors discussed above affect the inhibitory activity by modifying the affinity of the N-alkylporphyrin inhibitor for the enzyme. PMID- 3838894 TI - Response of normal and diabetic rat aorta to deendothelialization in terms of 6 keto-prostaglandin F1 alpha synthesis and cholesterol accumulation. AB - The response of rat aorta to balloon catheter-induced denudation in terms of 6 keto-PGF1 alpha synthesis and cholesterol accumulation was studied in normal and streptozotocin-induced diabetic animals. Initial studies in control rats showed that 1 day after deendothelialization, aortic 6-keto-PGF1 alpha was significantly reduced (31%), and this was normalized at 4 days after injury. However, endothelial regeneration as indicated by Evans blue staining was complete only at 14 days after denudation. Diabetic aorta showed a more severe reduction of 6-keto PGF1 alpha production (50%) at 1 day after deendothelialization, but this was also normalized at 4 days after injury. Deendothelialization did not increase the accumulation of cholesterol in diabetic aorta. It is concluded that (a) recovery of PGI2 production in deendothelialized aorta does not parallel endothelial regeneration, indicating substantial contribution of subendothelial layer, in rats and (b) short-term aortic injury in diabetic rat will not influence the arterial repair process and cholesterol accumulation and is unlikely to be a contributing factor to increased atherogenesis. PMID- 3838895 TI - Essential fatty acids in diabetes and systemic lupus erythematosus (SLE) patients. AB - Sera obtained from normal subjects and juvenile-onset diabetes (JD) and systemic lupus erythromatus (SLE) patients were examined for free fatty acid composition and 6-keto-PGF1 alpha content. In addition, prostaglandins in urine samples from normal and diabetic individuals were separated by HPLC, and 6-keto-PGF1 alpha levels were monitored by RIA. Arachidonate (20:4) content in diabetic and SLE individuals were significantly lower than that of controls. Urine from diabetic individuals showed decreased levels of 6-keto-PG F1 alpha. The study also indicated that RIA measurements on crude biological samples may yield erroneous data due to immune cross reactivity with other compounds. PMID- 3838896 TI - Selective increase in dopamine metabolism in the prefrontal cortex by the anxiogenic beta-carboline FG 7142. PMID- 3838897 TI - The effects of computer science advancements on public health research. PMID- 3838898 TI - Cutaneous reactions to atracurium. PMID- 3838899 TI - Simple atracurium infusions. PMID- 3838900 TI - pH and atracurium. PMID- 3838901 TI - Prevalence of chlamydial eye infection in patients attending an eye clinic, a VD clinic, and in healthy persons. AB - Chlamydial eye infection was detected in 28 of 983 ophthalmological patients with conjunctivitis or keratoconjunctivitis, with a peak frequency of over 9% in patients aged 16-20 years and with decreasing frequency thereafter. In patients aged 1 to 15 years chlamydial conjunctivitis was not observed. Chlamydial eye infection could not be detected in patients at a venereal diseases clinic, though chlamydial genital infection was rather frequent in these patients. Nor was Chlamydia trachomatis found in the eyes of healthy young adults. In patients with proved chlamydial conjunctivitis unilateral symptoms were the rule. Pseudoptosis was the most conspicuous presentation in two cases. A prolonged course can be expected in chlamydial eye infection if the condition is unrecognised and effective treatment delayed. The venereal background of the condition must also influence the management. PMID- 3838902 TI - Wheat germ agglutinin dimers bind sialyloligosaccharides at four sites in solution: proton nuclear magnetic resonance temperature studies at 360 MHz. AB - Equilibrium binding studies have been performed over a range of temperatures from 25.4 to 47.3 degrees C between wheat germ agglutinin isolectin I (WGA I) and the alpha 2-3 isomer of (N-acetylneuraminyl)lactose (NeuNAc alpha 2-3Gal beta 1 4G1c). Proton nuclear magnetic resonance spectroscopy at 360 MHz has been used to monitor titrations in this system under conditions where the fraction of total ligand which is bound is small, yet the fractional occupation of sites covers a wide range. Several of the ligand resonances, including the N-acetyl methyl and the axial and equatorial hydrogens at carbon 3 of the NeuNAc residue, are shifted and broadened in the presence of WGA due to chemical exchange between the free and bound environments. The lifetime broadening of the N-acetyl resonance at room temperature of a series of related sialyloligosaccharides has been previously used by us to measure binding affinities to two WGA isolectins [Kronis, K.A., & Carver, J.P. (1982) Biochemistry 21, 3050-3057]. In this paper we report the temperature dependence of the apparent bound shifts and the apparent bound line widths of the N-acetyl, H3a, and H3e peaks. The true bound shifts for the three resonances have been obtained from these data by using the equations derived by Swift and Connick [Swift, T.J., & Connick, R.E. (1962) J. Chem. Phys. 37, 307 320]. The total bound shifts, per monomer, were found to be -1.98, -4.0, and -0.8 ppm for the N-acetyl, the H3a, and the H3e resonances, respectively.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838903 TI - Thermodynamics of wheat germ agglutinin-sialyloligosaccharide interactions by proton nuclear magnetic resonance. AB - The thermodynamic parameters that characterize the binding of wheat germ agglutinin isolectin I (WGA I) to the alpha 2-3 isomer of (N acetylneuraminyl)lactose have been determined by 360-MHz proton nuclear magnetic resonance spectroscopy. The chemical exchange of the ligand between the free and bound sites resulted in a broadening and upfield shifting of the N-acetyl methyl resonance [Kronis, K.A., & Carver, J.P. (1985) Biochemistry (preceding paper in this issue)] which has allowed the determination of the equilibrium constant, KD, and the dissociation rate constant, kD. In this paper, the analysis of the temperature dependence of the KD values between 25.4 and 51.6 degrees C yielded equilibrium parameters indicative of a large entropy barrier to binding: delta H degree = -13.3 +/- 1.0 kcal mol-1 and delta S degree = -31.9 +/- 2.4 cal mol-1 K 1. The Arrhenius plot of the effect of temperature on the dissociation rate (kD) and the plot of 1n (kD/T) vs. 1/T indicated that the transition complex represented an unfavorable energy state compared to the dissociated molecules with an activation energy (EA) of +18.0 kcal mol-1 and enthalpy and entropy of dissociation (delta HD not equal to and delta SD not equal to) values of +17.4 +/ 0.3 kcal mol-1 and +13.4 +/- 1.2 cal mol-1 K-1, respectively. The driving force for this binding reaction is the large negative delta H degree with a small enthalpic barrier to association (delta HA = +4.1 kcal mol-1).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838904 TI - Semi-empirical conformational analysis of propranolol interacting with dipalmitoylphosphatidylcholine. AB - A semi-empirical conformational analysis is used to compute the conformation of (+)-propranolol inserted in dipalmitoylphosphatidylcholine. In a first step, the minimal conformational energy of the isolated molecule at the hydrocarbon-water interface is calculated as the sum of the contributions resulting from the Van der Waals, the torsional, the electrostatic and the transfer energies. Five pairs of conformers of minimal energy are determined. They are compared to data available from other experimental approaches. In a second step, they are assembled with dipalmitoylphosphatidylcholine at the interface. Although propranolol is considered in its protonated form, the electrostatic interaction with dipalmitoylphosphatidylcholine is negligible as compared to the Van der Waals interaction. The area occupied per propranolol molecule is between 0.53 and 0.64 nm2/molecule. In the most probable modes of insertion of propranolol into the lipid layer, the naphthyl moiety of the compound interacts with the lipid acyl chains. The protonated amino group is located in the vicinity of the phosphate residue possibly causing an electrostatic interaction. PMID- 3838905 TI - The detection and classification of membrane-spanning proteins. AB - Discriminant analysis can be used to precisely classify membrane proteins as integral or peripheral and to estimate the odds that the classification is correct. Specifically, using 102 membrane proteins from the National Biomedical Research Foundation (NBRF) database we find that discrimination between integral and peripheral membrane proteins can be achieved with 99% reliability. Hydrophobic segments of integral membrane proteins can also be distinguished from interior segments of globular soluble proteins with better than 95% reliability. We also propose a procedure for determining boundaries of membrane-spanning segments and apply it to several integral membrane proteins. For the limited data available (such as on transplantation antigens), the residues at the boundaries of a membrane-spanning segment are predictable to within the error inherent in the concept of boundary. As a specific indication of resolution, seven membrane spanning segments of bacteriorhodopsin are resolved with no information other than sequence, and the predicted boundary residues agree with the experimental data on proteolytic cleavage sites. Several definitive but yet to be tested predictions are also made, and the relation to other predictive methods is briefly discussed. A computer program in FORTRAN for prediction of membrane spanning segments is available from the authors. PMID- 3838906 TI - Reutilization of phosphatidylglycerol and phosphatidylethanolamine by the pulmonary surfactant system in 3-day-old rabbits. AB - Developing rabbits reutilize the phosphatidylcholine of surfactant with an efficiency of about 95%. The efficiency of reutilization of other components of surfactant have not been determined. 3-day-old rabbits were injected intratracheally with [3H]dipalmitoylphosphatidylcholine (DPPC) mixed with unlabeled natural surfactant and either disaturated [32P]phosphatidylglycerol (DSPG) or [14C]dipalmitoylphosphatidyl-ethanolamine (DPPE). The recovery of [3H]DPPC, [14C]DPPE, and [32P]DSPG in the alveolar wash was measured at different times after injection. By plotting the ratio of [32P]DSPG to [3H]DPPC or [14C]DPPE to [3H]DPPC counts/min in the alveolar wash vs. time after injection we showed that these two phospholipids are reutilized less efficiently than phosphatidylcholine. Based on other studies, several assumptions were made about the kinetics of surfactant phosphatidylethanolamine and phosphatidylglycerol. From the slopes of the semilog plots of total [14C]DPPE and total [32P]DSPG counts/min in the alveolar wash vs. time and these assumptions, we determined that these two phospholipids were reutilized at an efficiency of only 79%. PMID- 3838907 TI - 1,7-Diethylguanosine formation in tRNA chemical ethylation by ethionine and ethylnitrosourea. AB - The mechanism of ethionine carcinogenesis and more generally the relationship between alkylation of nucleic acids by chemical carcinogens and oncogenesis still remain obscure. In the present study the rat liver tRNA ethylation by L-[ethyl-1 3H]ethionine was reinvestigated by examining in particular the highly radioactive 'pyrimidine-nucleotide-like' fraction found earlier in acid hydrolysates of hepatic tRNA from ethionine-treated rats. The following results were obtained: (1) ultraviolet-spectral and chromatographic analyses showed the presence of 1,7 diethylguanosine in this 'pyrimidine-nucleotide-like' fraction; (2) the dialkyl compound was recovered exclusively in the form of imidazole-ring-opened derivatives. When [1-14C]ethylnitrosourea was used as alkylating agent, the in vivo ethylation pattern of tRNA from various organs of rat showed an analogous radioactive 'pyrimidine-nucleotide-like' fraction as main radioactive product. On the contrary, tRNA ethylation pattern after in vitro reaction with [1 14C]ethylnitrosourea exhibited a main radioactivity peak (85% of the total radioactivity recovered) in coincidence of the chromatographic area of 1,7 diethylguanine. The 1,7-diethylguanosine moieties of tRNA were extremely labile both under physiological and alkaline conditions. The 1,7-diethylguanine associated radioactivity was completely lost from [14C]ethyl-tRNA after only 7 h incubation at 37 degrees C and pH 7.3, while at pH 11.4 this process was preceded by the conversion of the 1,7-diethylguanosine residues into imidazole-ring-opened derivatives. PMID- 3838908 TI - Role of 2-deoxy-D-glucose in the inhibition of phagocytosis by mouse peritoneal macrophage. AB - 2-Deoxy-D-glucose inhibits Fc and complement receptor-mediated phagocytosis of mouse peritoneal macrophages. To understand the mechanism of this inhibition, we analyzed the 2-deoxy-D-glucose metabolites in macrophages under phagocytosis inhibition conditions and conditions of phagocytosis reversal caused by glucose, mannose and 5-thio-D-glucose, and compared their accumulations under these conditions. Macrophages metabolized 2-deoxy-D-glucose to form 2-deoxy-D-glucose 6 phosphate, 2-deoxy-D-glucose 1-phosphate, UDP-2-deoxy-D-glucose, 2-deoxy-D glucose 1, 6-diphosphate, 2-deoxy-D-gluconic acid and 2-deoxy-6-phospho-D gluconic acid. The level of bulk accumulation as well as the accumulation of any of these 2-deoxy-D-glucose metabolites did not correlate with changes in macrophage phagocytosis capacities caused by the reversing sugars. 2-Deoxy-D glucose inhibited glycosylation of thioglycolate-elicited macrophage by 70-80%. This inhibition did not cause phagocytosis inhibition, since (1) the reversal of phagocytosis by 5-thio-D-glucose was not followed by increases in the incorporation of radiolabelled galactose, glucosamine, N-acetylgalactosamine or fucose; (2) cycloheximide at a concentration that inhibited glycosylation by 70 80% did not affect macrophage phagocytosis. The inhibition of protein synthesis by 2-deoxy-D-glucose similarly could not account for phagocytosis inhibition, since cycloheximide, when used at a concentration that inhibited protein synthesis by 95%, did not affect phagocytosis. 2-Deoxy-D-glucose lowered cellular nucleoside triphosphates by 70-99%, but their intracellular levels in the presence of different reversing sugars did not correlate with the magnitude of phagocytosis reversal caused by these sugars. The results show that 2-deoxy-D glucose inhibits phagocytosis by a mechanism distinct from its usual action of inhibiting glycosylation, protein synthesis and depleting energy supplies, mechanisms by which 2-deoxy-D-glucose inhibits other cellular processes. PMID- 3838909 TI - A novel microcomputer program to analyze the effect of coronary stenosis and occlusion on regional left ventricular segmental wall motion. PMID- 3838910 TI - Computer-controlled instrumentation system for measurement of breath-by-breath responses from exercising humans. PMID- 3838911 TI - Computer programming for the evaluation of dose-response activity of anticonvulsant compounds. PMID- 3838912 TI - A software package for stimulus presentation and real time data collection. PMID- 3838913 TI - [Use of a lumbar Ommaya reservoir for chemotherapy and analgesia]. PMID- 3838914 TI - [Long-term peridural morphine analgesia in neoplastic and vascular pathology]. AB - Epidural analgesia using morphine has been used on 44 patients with intractable chronic pain, resistant to analgesics (including opiates). The pain was due to cancer in 24 cases, of vascular origin in 20. An indwelling tunnelized epidural catheter afforded repeated injections of morphine for a long period (up to 129 days) either in hospital or at home. The quality of analgesia achieved was rated as excellent or good, in 68 p. 100 of cases. Two cases only were total failures. Side effects, relatively common, were usually transient and minor; no case of respiratory depression or of infection has been recorded. PMID- 3838915 TI - [Comparison of morphine analgesia by peridural, subarachnoid and intracerebroventricular injections]. PMID- 3838916 TI - [Prolonged administration of morphine via the intrathecal route]. PMID- 3838917 TI - Effect of adroxazine, a heterocyclic compound of the adrenals, on the rate of replication of lymphoblastoid cells. AB - It has been found that the addition of 10(-2)-10(-8) microL/mL of adroxazine, heterocyclic compound of the adrenals, to the tissue culture medium increases the rate at which three strains of lymphoblastoid cells replicate. For example, the addition of 10(-5) micrograms/mL of adroxazine to cultured L5178Y cells decreases their doubling time from approximately 11 to 8 h and addition of 10(-3) micrograms/mL of adroxazine to the tissue culture medium of Huly-16 or Huly-29 cells decreases their doubling time from approximately 43 to 34 and 36 h, respectively. Other concentrations of adroxazine, from 10(-2) to 10(-8) micrograms/mL, cause a less but measurable decrease in doubling time. The effect of adroxazine on the rate of incorporation of [3H]thymidine into acid precipitable material by lymphoblastoid cells was found to parallel the effect of adroxazine on doubling time. The effect of adroxazine on the length of DNA synthesis and mitosis was calculated from the percent of cells that are labeled with [3H]thymidine during a 20-min interval and the percent of cells in mitosis, respectively. Results showed that adroxazine does not decrease the length of DNA synthesis or mitosis, but markedly decreases the sum of pre- and post-mitotic resting times (TG2 + TG1). Addition of 10(-3) micrograms/mL of adroxazine to the medium decreases the resting times of Huly-16 cells from approximately 20 to 10 h and Huly-29 cells from approximately 12 to 5 h. Addition of 10(-5) micrograms/mL of adroxazine to the medium decreases the resting time of L5178Y cells from 3.3 to 0.1 h.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3838918 TI - Lumbar reservoir for intrathecal chemotherapy. AB - The Ommaya ventricular reservoir has been the standby of intrathecal chemotherapy for more than a decade, in spite of some specific drawbacks. A general anaesthetic is often required. The scalp must be shaven. Ventricular puncture may not always be easy and keeping the ventricular catheter patent is sometimes difficult. Hence the author has adapted a commercially available lumbar peritoneal shunt system to function as a lumbar intrathecal reservoir. The procedure is simple and can be performed expeditiously under local anaesthesia. To date, eight cases have received intrathecal chemotherapy by this means. PMID- 3838919 TI - Effects of triflusal in patients with prosthetic heart valves. AB - The biological effects of a new antiplatelet agent, triflusal, were evaluated in patients with cardiac valvular prostheses. Each patient received 900 mg/day of oral triflusal for 30 days. Triflusal significantly inhibited platelet aggregation induced by adenosine diphosphate (1 to 5 mumol) or epinephrine (12.5 mumol), showing a slight effect on bleeding time (basal: 6 +/- 1.7 min; 30 days of treatment: 8.0 +/- 2.7 min). Serum levels of thromboxane B2 were significantly reduced during treatment, but changes in serum levels of 6-keto-prostaglandin F1 alpha were not observed, suggesting that triflusal does not affect prostacyclin biosynthesis by the vascular wall. The results show that triflusal has a marked inhibitory and selective effect on platelet function in patients with cardiac valvular prostheses. PMID- 3838920 TI - Effects of atropine and pirenzepine on healing of gastric ulcer induced by mucosal excision in rats. AB - We studied the effects of atropine and pirenzepine on acid secretion induced by electrical vagal stimulation (EVS) and on healing of gastric ulcers after mucosal excision in rats. Both atropine (50, 125, and 250 micrograms/kg/hr) and pirenzepine (2.5, 5.0, and 12.5 mg/kg/hr), administered intraperitoneally, inhibited vagally stimulated acid secretion in a dose-dependent manner. Pirenzepine given at a rate of 0.25 mg/kg/hr had no effect on the acid secretory response to EVS. Either atropine (125 micrograms/kg/hr) or pirenzepine (2.5 mg/kg/hr) given for one week caused an inhibition of approximately 80% in acid secretory response to EVS. The antisecretory dosage of pirenzepine caused a significant reduction in the surface area of the ulcer by the seventh postoperative day, whereas neither the antisecretory dosage of atropine nor the nonantisecretory dosage of pirenzepine significantly affected the size of the ulcer. We conclude that an antisecretory dosage of pirenzepine accelerates the healing of gastric ulcers produced in rats. PMID- 3838921 TI - [A universal system for collecting and evaluation physiologic data (the SHED system) at facilities equipped with the Z-80 microprocessor--description of the software system]. PMID- 3838922 TI - Melphalan-resistant multiple myeloma: results of treatment according to the M-2 protocol. AB - A group of 46 patients with melphalan-resistant multiple myeloma was treated according to the M-2 protocol with melphalan, prednisolone, BCNU, cyclophosphamide, and vincristine. According to the Salmon and Durie classification, four patients had stage II A; 36, stage III A; and six, stage III B disease. Treatment resulted in five patients (11%) entering remission, while 21 (46%) had stable and 20 (43%) had progressive disease. The median survival for all patients was 12.5 months, patients in remission surviving longer (median 46 months) than those with stable disease (median 15.4 months) or progressive disease (median 6.9 months). Compared with other treatment regimens used in melphalan-resistant myeloma, the remission rate is low but the median survival exceeds that reported by most other authors. PMID- 3838923 TI - Animal models for protecting ischemic myocardium: results of the NHLBI Cooperative Study. Comparison of unconscious and conscious dog models. AB - The Animal Models for Protecting Ischemic Myocardium Study was undertaken for the purpose of developing reproducible animal models that could be used to assess interventions designed to limit infarct size. This paper describes the results obtained in an unconscious dog model and in a conscious dog model, developed in three participating laboratories. The unconscious dog model, involving reperfusion after 3 hours of ischemia in open-chest dogs, was intended to determine whether therapy followed by early reperfusion would limit infarct size more than reperfusion alone. The conscious dog model used chronically instrumented dogs and permanent coronary occlusion to better mimic myocardial infarction in man. In both models, the proximal circumflex artery was occluded, and the primary experimental endpoint was infarct size, as measured by histological techniques 3 days after the initial occlusion. Infarct size was analyzed in relation to baseline variables including the anatomic area at risk, collateral blood flow to the subepicardial zone of ischemia and hemodynamic determinants of myocardial metabolic demand. Most of the variation in infarct size in control dogs could be related to variation in the area at risk, collateral blood flow, and rate pressure product. Using multivariate analysis and groups of 15 dogs, an intervention that limited infarct size by 10-13% of the area at risk would have been detected 50% of the time. Larger treatment effects would be detected more readily, and smaller effects often would be missed, unless group sizes were larger. Two drugs, verapamil and ibuprofen, were evaluated in both models, with experimental group sizes averaging 13 and 20 dogs, in the unconscious and conscious models, respectively. Three of 15 verapamil-treated dogs in the unconscious model study had much smaller infarcts than expected from baseline parameters. With these exceptions, neither drug limited infarct size in either model. PMID- 3838924 TI - Reflex inhibition of the quadriceps after meniscectomy: lack of association with pain. AB - We have examined the severity and duration of reflex inhibition of quadriceps activation after arthrotomy and meniscectomy, its relationship with pain, and the effect of local anaesthesia on this relationship. Fourteen men, on completion of medial meniscectomy by arthrotomy, received either 10 ml (B10 group) or 15 ml (B15 group) of 0.5% bupivacaine hydrochloride ('Marcaine Plain') into the knee, or no injection (control group). Reflex inhibition of quadriceps was measured as the percentage reduction, from the ipsilateral preoperative value, in the integrated surface electromyogram recorded during maximal voluntary isometric contractions with the knee in extension. Pain during each contraction was recorded on a linear analogue scale. Unoperated limbs showed no evidence of quadriceps inhibition. In the operated limbs, at 1-2 h post-operatively, controls had both severe inhibition (median = 62%) and severe pain on attempting a maximal quadriceps contraction. The B10 group had similar inhibition but less pain (P less than or equal to 0.005, Wilcoxon 2-sample, 1-tailed test). In the B15 group both inhibition (P less than or equal to 0.05) and pain (P less than or equal to 0.01) were less than in the controls. These effects of bupivacaine had been lost by 4-5 h post-operatively. At 3-4 days, inhibition was still severe (median = 75%) in all three groups of patients but pain was only mild or absent. At 10-15 days, median inhibition was still 35%, but there was little or no pain. We conclude that postmeniscectomy inhibition is not simply due to perceived pain but is due, at least in part, to stimuli from the knee. PMID- 3838925 TI - BMY28142, cefbuperazone (T-1982), and Sch 34343. Antimicrobial activity against 94 anaerobes compared to seven other antimicrobial agents. AB - Three new beta-lactams were evaluated against 94 anaerobic strains representing 15 species using a Wilkins-Chalgren broth microdilution method. The penems, Sch 29482 and Sch 34343, were most active with all minimum inhibitory concentrations (MICs) at less than or equal to 4.0 micrograms/ml and MIC90s of less than or equal to 0.25 micrograms/ml. BMY 28142 had a more limited antianaerobic activity against Bacteroides fragilis with a MIC50 and MIC90 of 32 and 128 micrograms/ml, respectively. Cefbuperazone (T-1982) had low B. fragilis MICs (MIC90, 8.0 micrograms/ml), but potentially resistant range MIC90 results for the other species in the B. fragilis group and Clostridium species. PMID- 3838926 TI - Elevated plasma 6-keto-prostaglandin F1 alpha in patients in septic shock. AB - Central venous plasma concentrations of 6-keto-prostaglandin F1 alpha (PGF1 alpha), the stable hydrolysis product of prostacyclin (PGI2, a vasodilator and antiaggregatory metabolite of arachidonic acid), were determined in patients with septic shock. In eight nonsurvivors, the median plasma 6-keto-PGF1 alpha level was 229 pg/ml (range 31 to 21,998), compared to 30 pg/ml (range 22 to 194) in six survivors. In three control patients who were not septic or in shock, the levels were less than 4 pg/ml. This study demonstrates that human septic shock is associated with elevated plasma levels of 6-keto-PGF1 alpha, and raises the possibility that increased PGI2 formation may play a role in human septic shock. PMID- 3838927 TI - Endoscopic laser therapy for respiratory distress due to obstructive airway tumors. AB - Neodymium-YAG laser therapy for unresectable malignant airway obstructions has a promising future. Nine patients with moderate to severe respiratory distress all experienced rapid relief of dyspnea and substantial improvement in pulmonary function within hours to days after treatment with laser phototherapy. The quality of life and survival was improved in otherwise hopeless cases. A nonfatal case of pneumothorax was the only major complication. PMID- 3838928 TI - Intracranial hypertension secondary to tension subcutaneous emphysema. AB - A patient with severe closed head injury and tension subcutaneous emphysema developed intracranial hypertension unresponsive to conventional treatment. Subcutaneous air drainage controlled the intracranial pressure. The subcutaneous pressure was directly correlated with intracranial pressure. PMID- 3838929 TI - Acid neutralizing capacities and protective effect of sucralfate. PMID- 3838930 TI - The evaluation of a pocket computer as an aid to insulin dose determination by patients. AB - A small and inexpensive computer was programmed to assist patients in making decisions regarding insulin delivery using constant subcutaneous infusion systems. Insulin dosage was based on gender, pre- and postprandial blood glucose, between-meal blood glucose, patient weight, time of day, and when appropriate, the carbohydrate content of food ingested. The system was self-adjusting based on postprandial and fasting blood glucose levels. A developmental phase in which the computer program was refined was undertaken with five highly trained type I patients using an insulin infusion pump. Then, based on the suggestions made by these patients, a final program was used by these same five patients for 1 mo. Computer-assisted insulin delivery resulted in lower mean blood glucose (162 versus 130 mg/dl) and hemoglobin A1c (7.2% versus 5.8%) values when compared with precomputer values. In addition, there was a significant increase in the frequency of blood glucose testing during the computer-assisted periods in that patients monitored their blood glucose 4.9 times per day during the physician alone period whereas a mean of 7.5 glucose tests were performed during the computer-assisted periods. Patient response to the concept was overwhelmingly favorable. These studies demonstrate that computer-assisted insulin-delivery decision making is feasible, acceptable to patients already accustomed to pump use, safe, effective, and may provide a savings in terms of professional time. PMID- 3838931 TI - The primary structure of the imported mitochondrial protein, ornithine transcarbamylase from rat liver: mRNA levels during ontogeny. AB - Ornithine transcarbamylase, one of the enzymes of the urea cycle in ureotelic organisms, is synthesized in the cytoplasm of hepatocytes as a precursor larger than the mature form found in the mitochondrial matrix. We deduced the amino acid sequence of the precursor of ornithine transcarbamylase from rat liver from the nucleotide sequence of overlapping cDNA clones spanning the complete coding region, 3' untranslated region, and most of the 5' untranslated region of the mRNA. The mature enzyme consists of 322 amino acids and is derived from the larger precursor by proteolytic removal of 32 amino acids from the amino terminus. The amino-terminal extension contains eight basic and no acidic residues. This highly basic character appears to be a feature of presequences on cytoplasmically synthesized mitochondrial proteins. Comparison of the amino acid sequence determined for the enzyme from rat with that from human liver (Horwich et al., 1984) shows that there is a high degree of homology between the sequences of the mature protein (93%) and relatively less homology between the sequences of the amino-terminal extension (72%). The ornithine transcarbamylase from rat liver also shows a considerable degree of amino acid homology (44%) with the enzyme from Escherichia coli (Van Vliet et al., 1984) and leads to suggestions about residues involved in substrate binding and catalysis. An analysis of levels of RNA in fetal and neonatal liver shows that ornithine transcarbamylase mRNA levels increase from about 40% of adult levels at day 14 of gestation to a peak at day 20 of gestation, and, after a drop around the time of birth, rises to adult levels during the second week after birth. PMID- 3838932 TI - Correlation functions in the analysis of visual evoked potentials. AB - Our "vision" laboratory has been working for several years on stimulation methods and data processing. We present here the results of an analysis of correlation functions between VEPs obtained by flashes and patterned stimulations. This study provides additional information about possible interpretations. PMID- 3838933 TI - 1,25-Dihydroxyvitamin D and vitamin D-binding protein are both decreased in streptozotocin-diabetic rats. AB - Calcium and vitamin D metabolism were studied in streptozotocin-treated rats up to 10 days after the induction of diabetes. Proteinuria, hypercalciuria, and hyperphosphaturia appeared as early as 3 days after diabetes induction and were reversed by insulin. The serum proteins and fasting calcium concentrations were decreased in untreated diabetic rats. The concentration of serum vitamin D binding protein (DBP) was higher in male than in female control rats (mean +/- SD; 555 +/- 73 vs. 348 +/- 28 mg/liter, P less than 0.001). When sequentially measured in male untreated diabetic rats, DBP concentration steadily decreased. Compared with control values, DBP was reduced 19%, 28%, and 32% on days 3, 6, and 10, respectively, after induction of diabetes in male rats. In female animals, DBP was reduced 22% on day 10 of diabetes. DBP concentration was corrected by insulin treatment of diabetic rats and remained normal in streptozotocin-treated animals that did not develop diabetes. The serum concentration of 25 hydroxyvitamin D3 was similar in both sexes and was not affected by diabetes. Like DBP, the concentration of total 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] was higher in male than in female control rats (120 +/- 24 vs. 96 +/- 17 ng/liter, P less than 0.001), but 10 days after induction of diabetes this concentration decreased by 37% and 29% in male and female rats, respectively. The free 1,25 (OH)2D3 concentration, estimated from the molar 1,25-(OH)2D3/DBP ratio, was similar in both sexes and was not decreased by diabetes. We conclude that experimental diabetes in the rat induces a decrease in DBP concentration and a concomitant decrease in total but not in free 1,25-(OH)2D3 concentrations. This may indicate that diabetes decreases circulating 1,25-(OH)2D3 concentrations through alterations in DBP levels. PMID- 3838934 TI - A nonamidated peptide homologous to porcine peptide YY and neuropeptide YY. AB - A 37-residue peptide has been purified from the endocrine pancreas of the anglerfish. The first 36 residues were sequenced by gas phase Edman degradation. The sequence at the carboxyl-terminus was determined by sequencing the carboxyl terminal tryptic dipeptide. The sequence of the peptide, which is consistent with the amino acid composition, was determined to be: Y X P X P X K X P X E X T X P X G X S X N X A X S X P X E X D X W X A X S X Y X Q X A X A X V X R X H X Y X V X N X L X I X T X R X Q X R X Y X G. Fast atom bombardment/mass spectrometry of the peptide identified a molecular ion with an average mass of 4221.3, in good agreement with the theoretical mass based upon the determined amino acid sequence. The peptide has an equal degree of sequence identity to both porcine neuropeptide YY (64%) and gastrointestinal peptide YY (64%), but less sequence identity to porcine pancreatic polypeptide (47%). Unlike the related mammalian peptides, the major form of the anglerfish peptide terminates in tyrosyl-glycine rather than tyrosineamide. PMID- 3838935 TI - Purification and properties of carboxypeptidase G2 from Pseudomonas sp. strain RS 16. Use of a novel triazine dye affinity method. AB - A folate-degrading enzyme, carboxypeptidase G2, has been purified on a large scale from Pseudomonas sp. strain RS-16. Homogeneous enzyme was obtained by a three-step procedure involving ion-exchange chromatography and a novel triazine dye (affinity) chromatography step which utilizes Zn2+ to promote adsorption of the enzyme. Enzyme was selectively eluted by the use of a chelating agent (EDTA) and a step change in pH. The enzyme is a dimeric protein (Mr 83000) with two identical subunits of 41800 and contains four atoms of zinc per enzyme molecule, which are required for full activity. The enzyme follows Michaelis-Menten kinetics with Km values of 4.0 microM for folate, 8.0 microM for methotrexate and 34.0 microM for 5-methyltetrahydrofolate, the predominant form of reduced folate found in plasma. PMID- 3838936 TI - 1,4,5,6-Tetrahydro-2-methyl-4-pyrimidinecarboxylic acid. A novel cyclic amino acid from halophilic phototrophic bacteria of the genus Ectothiorhodospira. AB - A novel cyclic amino acid was detected in and subsequently isolated from extremely halophilic species of the bacterial genus Ectothiorhodospira. The structure of this new compound was elucidated by a combination of nuclear magnetic resonance (NMR) techniques and mass spectrometry. 1,4,5,6-Tetrahydro-2 methyl-4-pyrimidinecarboxylic acid is only accumulated within the cytoplasm under certain growth conditions and seems to serve an osmoregulatory function. There is no previous reference to this molecule in the chemical literature and we, therefore, propose to use the trivial name 'ectoine', due to its discovery in members of the bacterial genus Ectothiorhodospira. (formula: see text). PMID- 3838937 TI - Binding of N-dansylgalactosamine to the lectin from Erythrina cristagalli as followed by stopped-flow and pressure-jump relaxation kinetics. AB - The binding kinetics of N-dansylgalactosamine to the lectin from Erythrina cristagalli have been studied using stopped-flow and pressure-jump chemical relaxation by monitoring ligand fluorescence. Both methods gave results which are consistent with a simple bimolecular association reaction. The association rate constant, k + 1 = 4.8 X 10(4) M-1 s-1, is far too low to be controlled by diffusion; the dissociation rate is 0.4-0.66 s-1, depending upon the method of determination and the experimental conditions. Identical reaction-rate parameters were obtained at pH 7.3, where soluble aggregates can be present in the lectin solution and at pH 4.7 where such aggregates are absent. The slow rates of carbohydrate binding seem to be characteristic for most lectins and lend support to the idea that they are evolutionary related and have structurally similar binding sites. Analysis of the relaxation amplitudes of the pressure-jump experiments yielded a molar reaction volume change, delta V0, upon binding of +7 ml/mol. This volume change can be caused by desolvation of the ligand upon binding. PMID- 3838939 TI - A non-peroxide norsesterterpene from a marine sponge Hyrtios erecta. AB - A new norsesterterpene, hyrtial 4, and known sesterterpenes, 1-3, have been isolated from an anti-inflammatory active crude extract of the sponge Hyrtios erecta. PMID- 3838938 TI - Primary structure of delta subunit precursor of calf muscle acetylcholine receptor deduced from cDNA sequence. AB - Clones carrying cDNA sequences for the delta subunit precursor of the acetylcholine receptor from calf skeletal muscle have been isolated. Nucleotide sequence analysis of the cloned cDNA has indicated that this polypeptide consists of 516 amino acids including a hydrophobic prepeptide of 21 amino acids. The delta subunit of the calf muscle acetylcholine receptor, like the alpha, beta and gamma subunits of the same receptor as well as the alpha and gamma subunits of its human counterpart, exhibits structural features common to all four subunits of the Torpedo electroplax receptor, apparently being oriented across the membrane in the same manner as proposed for the fish receptor subunits. The degree of amino acid sequence homology between the calf and Torpedo delta subunits (60%) is comparable to that between the beta subunits (59%) and to that between the gamma subunits (56%), but is lower than that between the alpha subunits of the two species (81%). This suggests that the alpha subunit evolved more slowly than the three other subunits. A dendrogram representing the sequence relatedness among the four subunit precursors of the mammalian and fish acetylcholine receptors has been constructed. Some regions of the delta subunit molecule, including the region containing the putative disulphide bridge and that encompassing the clustered putative transmembrane segments M1, M2 and M3, are relatively well conserved between calf and Torpedo. The relative pattern of regional homology is similar for all four subunit precursors. PMID- 3838940 TI - Antihepatoxic constituents of Garcinia kola seeds. AB - Kolaviron, a fraction of defatted methanolic extract and biflavanones of Garcinia kola seeds significantly antagonized the lethal poisoning of mice with phalloidin. Garcinia biflavanones GB1, GB2 and kolaflavanone were isolated as the active constituents. PMID- 3838941 TI - Product of extracellular-superoxide dismutase catalysis. AB - Extracellular-superoxide dismutase is a tetrameric enzyme containing four copper atoms. It has previously been shown to catalyse the decay of the superoxide radical, but the resulting product was not determined. In a xanthine oxidase xanthine system in which about 30% of the electron flux resulted in superoxide radical formation, accumulation of hydrogen peroxide was determined. Catalysis of superoxide radical decay by extracellular-superoxide dismutase was found to result in hydrogen peroxide formation. The catalysed reaction is thus identical to those of previously investigated superoxide dismutases. Human manganese superoxide dismutase was also found to dismute the superoxide radical to hydrogen peroxide and water. PMID- 3838942 TI - Increased level of calcitonin mRNA after 1,25-dihydroxyvitamin D3 injection in the rat. AB - Vitamin D metabolites are able to change plasma calcitonin (CT) levels, but nothing is known about a possible effect at the CT gene level. Here we have investigated the acute effects of 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3) on the CT biosynthetic activity of thyroid glands from adult rats. Plasma CT levels were significantly increased (X2) 1 and 2 h after 1,25-(OH)2D3 injection in the face of unchanged plasma calcium values. The thyroidal CT content also was unchanged. A 2-fold increase in CT mRNA level measured by dot-blot hybridization occurred 1 and 2 h after 1,25-(OH)2D3 administration. Expression of CT gene products was examined in the rabbit reticulocyte lysate cell-free translation assay. After polyacrylamide gel electrophoresis, specific immunoprecipitates were autoradiographed and quantified by integration. A single precursor of Mr approximately equal to 15 000 could be specifically immunoprecipitated with CT antisera. A 3-4-fold rise in translatable CT mRNA activity was observed 1 and 2 h after 1,25-(OH)2D3 injection. Thus, parallel changes in CT mRNA level, CT mRNA activity and plasma CT levels were observed in adult female rats after administration of 1,25-(OH)2D3. These findings demonstrate for the first time that 1,25-(OH)2D3 enhanced CT gene expression in the face of unchanged plasma calcium levels. PMID- 3838943 TI - Trypsin activation of porcine procolipase. Kinetics of activation and effects on lipid binding. AB - The kinetics of trypsin activation of pancreatic procolipase was investigated and the pH dependence of the binding of procolipase and colipase to a tributyrine bile salt interface studied. The Km was 0.06 mM and kcat 8 s-1, and was of the same order of magnitude as for the activation of pancreatic zymogens. At basic pH values colipase had a higher affinity for the tributyrine-bile salt interface as compared to procolipase. The trypsin activation of procolipase ensures a rapid degradation of dietary lipids in the intestine. PMID- 3838944 TI - 1 alpha,25-Dihydroxyvitamin D3 (calcitriol) stimulates proliferation of human circulating monocytes in vitro. AB - Previous studies demonstrated that human circulating monocytes can proliferate in vitro when incubated with lectin-induced factor(s) from lymphocytes [(1985) Biochem. Biophys. Res. Commun., in press]. This study shows that human monocytes were induced to proliferate when incubated with 1 alpha,25-dihydroxyvitamin D3 (calcitriol) at physiological concentrations. The optimal dose was about 10 nM. Proliferative activity was examined both by measuring the [3H]thymidine incorporation and by counting cell nuclei. Among other derivatives of vitamin D3, 1 alpha,24R-dihydroxyvitamin D3 and 1 alpha,24R,25-trihydroxyvitamin D3 stimulated mitotic activity of monocytes. Addition of both calcitriol and lectin stimulated lymphocyte-conditioned medium to the monocyte culture had an additional effect on the mitotic activity of monocytes. PMID- 3838945 TI - Synthesis and functional activity of translation initiation regions in mRNA. 20 base polyribonucleotides from the replicase gene of phage MS2 and fr. AB - Three 20-base polyribonucleotides, AAACAUGAGGAAUACCCAUG (I), AAACAUGAGGAAAACCCAUG (II), AAACAUGAAGAAUACCCAUG (III), corresponding to the minimal initiation region for the replicase gene of phage MS2 and fr or having some differences were synthesized using enzymatic methods. The template activity of the synthesized polynucleotides in initiation and their capacity to bind phage coat protein were studied under conditions optimal for native mRNA. Polynucleotides I and II exhibit template activity comparable to that of the native phage RNA fragments. Polynucleotide III with the destroyed SD sequence dit not manifest any functional activity either as template or in binding to MS2 phage coat protein. PMID- 3838946 TI - Modulation of striatal enkephalinergic neurons by antipsychotic drugs. AB - In this paper we review the detailed mechanisms underlying the modulation of enkephalinergic neurons by dopaminergic neurons in rat striatum. Several lines of evidence, which showed that striatal levels of [Met5]enkephalin (ME) increase after the nigrostriatal dopaminergic pathway was interrupted by hemitransection or direct administration of 6-hydroxydopamine to the substantia nigra, or after repeated injections of either reserpine or haloperidol, suggest that dopamine (DA) plays an important role in regulating the metabolism of ME-containing neurons in the striatum. The increase in ME content after repeated injections of haloperidol was found in areas heavily innervated by DA neurons such as striatum or nucleus accumbens but not in hypothalamus, brain stem, and hippocampus. Further studies suggest that striatal cholinergic interneurons may partially mediate the action of haloperidol on enkephalinergic neurons. Several studies have been carried out to determine whether the elevation of striatal ME content after haloperidol treatment was caused by an increase in the synthesis or by a decrease in the utilization of ME. The rate of decline of striatal ME content in haloperidol-treated rats was steeper than that of controls after intraventricular injection of cycloheximide, which indicated that haloperidol accelerates the turnover of ME. This hypothesis was confirmed by our recent findings that the level of mRNA coding for preproenkephalin A, determined by cell-free translation and blot hybridization with cDNA clones, is increased after repeated injections of haloperidol. PMID- 3838947 TI - The effect of naproxen on the concentration of prostaglandins in human seminal fluid. AB - Whole ejaculates were examined for their content of prostaglandins (PGs) during medication with 250 mg naproxen three times daily for 2 weeks. Six volunteers delivered semen samples before, periodically during, and after the period of medication. During treatment with naproxen, the concentration of PGE, PGF, 19 hydroxy-PGE, and 19-hydroxy-PGF significantly decreased. One week after cessation of medication the PG concentration had returned almost to that found before treatment. The four 19-hydroxy-PGF compounds could be determined separately and the relation between them estimated. The proportion of 8 alpha-19-hydroxy-PGF2 alpha increased, whereas that of 8 beta-19-hydroxy-PGF1 alpha decreased significantly during the medication period. No significant influence of the treatment on sperm density or motility could be observed. It is concluded that treatment with naproxen, a potent inhibitor of PG synthesis, significantly reduces the concentration of all PGs present in human seminal fluid. The implication of the effect on human fertility is discussed. PMID- 3838948 TI - Testicular feminization with incomplete Mullerian regression. PMID- 3838949 TI - [Use of microcomputers for calculating cardio- and hemodynamics parameters based on the data of tetrapolar transthoracic impedance rheoplethysmography]. PMID- 3838950 TI - [Effect of the delta-sleep peptide on erythrocyte membrane function during low temperature exposure]. AB - 3-day effect of low temperature increases the amount of extraerythrocyte hemoglobin by 64% in the blood serum, the activity of glucose-6 phosphatedehydrogenase increasing by 231%. Administration of 6.12 or 18 micrograms/100 g body weight of the delta-sleep peptide (DSIP) induces on change in amount of extraerythrocyte hemoglobin in the blood serum of intact rats. 6 micrograms/100 g DSIP increases the activity of glucose-6-phosphatedehydrogenase by 251.6%; 12 micrograms/100 g-- by 165.6%; 18 micrograms/100 g--by 90.6%. The normalizing effect on the level of extraerythrocyte hemoglobin and activity of glucose-6-phosphatedehydrogenase in low ambient temperature occurs at the dose of DSIP 12 micrograms/100 g body weight. The DSIP stabilizes the erythrocyte membranes in low temperature. PMID- 3838951 TI - [A radioimmunoassay of 6-keto PG F1 alpha using [125I]-6-keto PG F1 alpha tyramide]. AB - We established a radioimmunoassay of 6-keto PG F1 alpha, using 125I-6-keto PG F1 alpha-tyramide, which enabled us more easily to monitor the plasma levels of prostacyclin in clinical fields. Antibodies against 6-keto PG F1 alpha were obtained from rabbits immunized with 6-keto PG F1 alpha-BSA complex, which could be used for RIA at a final dilution of 1:648,000. The detection limit of 6-keto PG F1 alpha was 50-1000 pg/ml. The cross reactivities between PG I2 and PG F1 alpha were 26.6% and 1.62% respectively, but those between other prostaglandins were less than 1%. Using this radioimmunoassay with 125I-6-keto PG F1 alpha tyramide, plasma levels of 6-keto PG F1 alpha were measured. The recovery rate by this assay was 92.9%, and the intra- and inter-assay coefficients of variation determined were 9.9% and 27.1%, respectively. The mean of plasma levels of 6-keto PG F1 alpha revealed 126.2 +/- 75.3 (mean +/- S.D.) pg/ml in 46 healthy Japanese males, 122.7 +/- 85.2 pg/ml in 60 females, and 124.2 +/- 81.3 pg/ml in 106 Japanese of both sexes. PMID- 3838952 TI - Technical expertise is necessary in system selection. PMID- 3838953 TI - Autoanti-thyroglobulin production in obese chickens: influence of age and sex as measured by ELISA. AB - The kinetics of serum autoantibody production against thyroglobulin (Tg) was examined in two strains of chicken using an enzyme-linked immunosorbant assay (ELISA). Both strains are homozygous for the B13 haplotype. The OS strain develops spontaneous autoimmune thyroiditis at several weeks of age while the Sp. C strain, which serves as the control for the OS strain, has virtually undetectable autoantibody levels as determined by hemagglutination assay (HA). Serum autoantibody levels in both strains were monitored bi-weekly from 6 through 14 weeks of age post-hatching, using both the ELISA and HA techniques. With the more sensitive ELISA, absolute serum autoantibody concentrations were determined and both the Sp. C and OS strains were found to have readily detectable serum autoantibodies against Tg; however, the OS did have significantly higher autoantibody levels than the Sp. C strain. In the latter strain, autoantibodies increased significantly with age while the pattern was somewhat reversed in the OS strain. The ELISA revealed that the decline of Tg autoantibodies with age in the OS strain was restricted primarily to males, with females maintaining constant levels of autoantibodies. In contrast, the HA detected only the differences in autoantibody levels between the OS and Sp. C strains. PMID- 3838955 TI - Use of interferon in the management of patients with subacute sclerosing panencephalitis. AB - Six patients (five male, one female) with subacute sclerosing panencephalitis were treated with purified lymphoblastoid interferon, using a combination of intravenous and lumbar intrathecal routes. The first symptoms of the disorder occurred between seven and 16 years of age, and the length of the illness before treatment varied from 1 1/2 to 12 months. All six patients were in the first clinical stage of the disorder. After a limited period of follow-up there has been no clinical improvement. Nil or low levels of interferon were found in CSF two hours after intravenous injection, but CSF levels of interferon were maintained for at least 24 hours after intrathecal injections. Side-effects of interferon included pyrexial reactions, especially after high-dose intravenous therapy (six), lethargy (four), a transient rise in blood pressure (two) and a reduction in platelet count (six). Staphylococcus epidermidis was grown from the CSF of one patient. PMID- 3838954 TI - Synthesis of surfactant lipids in developing rat lung: studies with isolated alveolar type-II cells. PMID- 3838956 TI - Pseudotumor cerebri associated with hypovitaminosis A and hyperthyroidism. AB - Pseudotumor cerebri, or benign intracranial hypertension, is relatively rare in children. A 12-year-old girl with Hashimoto hyperthyroidism and hypovitaminosis A is described, who fulfilled the diagnostic criteria for pseudotumor cerebri. PMID- 3838957 TI - Distinct properties of receptors for Dolichos biflorus agglutinin (DBA) isolated from small intestine of adult mice and endoderm cells of early embryos and teratocarcinomas. AB - Receptors for Dolichos biflorus agglutinin are only expressed in severely restricted cell populations of the mouse. The receptors were isolated from mouse embryos, teratocarcinoma cells, and the small intestine of adult mice. Upon SDS polyacrylamide gel electrophoresis, all of the receptor preparations migrated as distinct glycoprotein bands; the apparent molecular weights were more than 150 kilodaltons in all cases. The sizes of the carbohydrate moieties determined by gel filtration after alkaline NaBH4 treatment appeared to correlate with the status of cell differentiation. Thus, as has previously been reported, the receptors from teratocarcinoma OTT6050 and embryonal carcinoma cells (F9 and N4 1) contained large amounts of high-molecular-weight carbohydrates eluted near the excluded volume of a Sephadex-G-50 column. The receptors from 6.5-day embryos also contained high-molecular-weight carbohydrates, whose average molecular weight was lower than those obtained from OTT6050, F9, or N4-1. The receptors from PYS-2 parietal endoderm cells, END-C-2 visceral endoderm cells, and the small intestine did not contain significant amounts of the large carbohydrates. These results illustrate the complex nature of the cell-surface changes accompanying cell differentiation. PMID- 3838958 TI - Serological analysis of early mouse embryo with rat monoclonal antibodies produced against mouse teratocarcinoma cells. AB - Rat-mouse hybridoma antibodies were produced against mouse teratocarcinoma F9 or PCC4 aza1 cells, and four clones were established. Both the F11 (IgM) and F20 (IgG2c) antibodies showed a similar specificity, reacting only with nullipotential teratocarcinoma cells. They were also found to agglutinate sheep red blood cells. Solid-phase enzyme-linked immunofluorescence assay showed that, among the neutral glycolipids studied, they only reacted with the Forssman antigen. P2 antibody (IgG2b) reacted with the undifferentiated-type and embryonal endodermtype teratocarcinoma cells. During the preimplantation stage, this antibody did not stain mouse embryos, but it reacted very weakly with the inner cell mass of blastocysts cultured in vitro. In the 5th-day embryo, the embryonic ectoderm as well as the visceral and parietal endoderm were positive, but the extraembryonic ectoderm was not. Mesoderm of the 7.5th-day embryo also reacted with this antibody. However, P2 antigen was not observed in the 16th-day embryo or in adult tissues. F2 antibody (IgG2a), which was reactive with all of the cultured cell lines tested, showed an immunoreaction with mouse embryos throughout the preimplantation stage. However, in the 7.5th-day embryo, the presence of F2 was limited to the cells forming the parietal endoderm. This antigen was present in some epithelial tissues of the 16th-day embryo and adult mouse. Of these antigens, P2 and F2 are probably novel differentiation antigens of the early mouse embryo. Together with the Forssman antigen, these will be important markers for analyzing cell-surface antigens of mouse teratocarcinoma cells as well as embryos. PMID- 3838959 TI - Computer applications to endoscopic practice. A/S/G/E National Postgraduate Endoscopy Course II. January 19-21, 1984, San Francisco, California. Symposium. PMID- 3838960 TI - Microcomputers and consultation psychiatry in the general hospital. AB - The microcomputer allows for the design of a system that functions integrally with both the day-to-day and long-term needs of a consultation-liaison psychiatric service. This article describes a microcomputer system and data structure that can accomplish many of the same research tasks as a minicomputer system. In addition, the same data item inputs can be used to develop management reports that can facilitate the administrative as well as the pedagogic needs of a consultation-liaison service. Because of the daily availability and review of output reports, supervisors' corrections are made that enhance the reliability of the data. The program format provides 1) an intake form with pertinent identifying demographic data; 2) an activity file that contains every encounter between the consultant and the patient as well as research, supervisory, and liaison activities (which permit cost-effectiveness analysis); 3) a master clinical data base containing 255 variables for each case seen; 4) a computer generated chart note; 5) letters to referring physicians; 6) clinical activity descriptions for billing; and 7) a file for pertinent literature searches. Since certain analyses may be limited in the microsystem, its interactive capacity with mainframe computers allows for complex functions. The microsystem described presently emphasizes flexibility, accessibility, and step-by-step development of files as needed by a particular consultation-liaison service. Finally, microcomputers are available at a fraction of the cost of the minicomputer or mainframe systems. PMID- 3838961 TI - Discussion on the use of computers in consultation-liaison psychiatry. PMID- 3838962 TI - Coeliac disease presenting with intestinal pseudo-obstruction. PMID- 3838963 TI - [Clark implantable auditory prosthesis. Prerequisites and technic; report on the cochlear implant project of the ENT clinic of the Medical School in Hannover]. PMID- 3838964 TI - Effects of the calcium antagonist, diltiazem on in vitro and in vivo/in vitro bone resorption. AB - The effect of the calcium antagonist diltiazem on bone resorption in organ culture has been investigated. It was found that diltiazem was ineffective alone but that in concentrations above 5 mumol/l it reduced mineral and organic resorption induced in vitro by 1.25 dihydroxycholecalciferol (1.25 (OH)2D3). No additivity with calcitonin effects was observed. Diltiazem did not significantly affect bone resorbing activity stimulated by 24,25(OH)2D3. Bone resorption was measured by an in vivo/in vitro technique using 45Ca prelabelled mice. Compared with 1.25(OH)2D3 alone treated group (0.480 pmol/g), it was found that diltiazem (100 nmol/g) reduced bone resorption without effect on calcium and phosphorus plasmatic concentrations at death. These data suggest that such a calcium antagonist is able to inhibit 1.25-(OH)2D3-increased-bone resorption either in vitro or in vivo/in vitro. PMID- 3838965 TI - Chromosomes of human sperm: variability among normal individuals. AB - The chromosomal constitution of 2468 human sperm cells has been investigated by fusion of human sperm with hamster eggs. The overall frequency of cells with structural aberrations was 7.7%, ranging from 1.9% to 15.8%, and varying significantly among individuals. The highest frequency occurred in sperm from the oldest donor (49 years), who also had had a vasectomy reversal three years prior to sampling. The overall aneuploidy frequency was 1.7%, ranging from 0.6% to 3.1%. In nine out of ten donors from whom blood samples were available the frequency of sperm cells with structural aberrations was higher than that for lymphocytes. Two previously reported donors (Brandriff et al. 1984) were resampled after an interval of 14 and 16 months respectively, and were each found to have similar frequencies of sperm chromosome abnormalities at both sampling times. A father-son pair included in the study had several chromosome breakpoints in common, although no more frequently than unrelated individuals. PMID- 3838966 TI - A multichannel counter/timer interface for the acquisition of neuronal spike trains. PMID- 3838968 TI - Diet, blood pressure, and multicollinearity. AB - Recent reports of an inverse association between dietary calcium intake and hypertension stimulated this analysis of the relationship of blood pressure to more than 20 dietary factors among a group of 8000 Japanese men in Hawaii. Reported intakes of potassium, calcium, protein, and milk were all inversely associated with blood pressure levels when examined one at a time while controlling for other risk factors. Alcohol intake was directly associated with blood pressure, and was treated as a confounding variable in the analysis. The association of potassium intake with blood pressure was relatively stronger than the associations for other nutrients, but the intake of potassium was so highly correlated with intakes of calcium, milk, and protein that it was not statistically possible to identify the independent association of potassium and blood pressure. Calcium intake was strongly correlated with milk and potassium intakes, and only calcium from dairy sources was associated with blood pressure. These data thus indicate that several dietary factors are inversely related to blood pressure levels independently of other risk factors such as age, body mass, and alcohol intake. The high degree of intercorrelation (multicollinearity) among these dietary factors, however, indicates that the independent role of any specific nutrient cannot be conclusively separated from the possible effects of other nutrients in this type of study. PMID- 3838967 TI - An H-2K gene of the tw32 mutant at the T/t complex is a close parent of an H-2Kq gene. AB - Two recombinant mice have been recovered from the progeny of Ttf/tw32 + animals. They have lost the tw32 lethality factor(s) and gained tufted, presumably from the T chromosome. Southern blot analysis of class I genes of these two new partial tPA027 and tPA286 haplotypes indicates that they have retained at least part of the major histocompatibility complex of the tw32 chromosome (H-2 haplotype H-2w28). We have prepared a phage library of Eco RI-digested DNA from homozygous tPA027 animals. Upon screening the library with a cDNA probe specific for H-2K genes, we isolated a class I gene displaying all of the distinctive features of a genuine H-2K gene, and which could thus be defined as an H-2Kw28 gene. The H-2Kw28 gene is 92-95% homologous to H-2Kb and H-2Kd genes and differs significantly from the other class I genes sequenced so far. Homology with the H 2Kb sequence reaches nearly 100% in the 3' part of the H-2Kw28 gene. Moreover, the homology with an H-2Kq cDNA sequence reaches 99.8%. Several hypotheses can account for the near identity of H-2Kb, H-2Kq, and H-2Kw28 gene sequences: either recombination between H-2w28 and H-2b and H-2q sequences occurred before or at the time the strain was established, or the class I genes of the tw32 chromosome and the H-2b and H-2q genes found in inbred strains of mice have separated from each other rather recently. PMID- 3838970 TI - New aspects on the pathophysiology of wound infection and wound healing--the problem of lowered oxygen pressure in the tissue. AB - There is a correlation between tissue oxygen tension, incidence of infection and disturbance of wound healing. Scientific investigations in recent years have documented that infection and tissue repair are processes consuming oxygen. Animal experiments have shown that oxygenation of the tissue is essential for the elimination of pathogens, the stimulation of phagocytosis as well as for the degradation of dead tissue structures and the synthesis of new tissue structures. Hypoxia and hypovolemia are of crucial significance for the impairment of organ functions. An effective therapy for disorders of oxygenation has not been feasible so far, except for clinical anesthesiological efforts to increase the oxygen saturation of hemoglobin and hyperbaric oxygen therapy. However, it has recently been possible to synthesize an oxygen carrier which supports respiratory oxygen physiologically. With tetrachlorodecaoxide (TCDO), a causal therapeutic concept for the topical treatment of infected hypoxic wounds with chronic disturbance of wound healing has been introduced for the first time. PMID- 3838969 TI - Evaluation of BW942C, a novel antidiarrheal agent, against enterotoxins of Escherichia coli and Vibrio cholerae. AB - BW942C, an enkephalin-like pentapeptide with anti-diarrheal activity, was tested against crude toxins of Escherichia coli and Vibrio cholerae in the Y-1 adrenal cell assay, rabbit ileal loop assay, and suckling mouse assay. The effects of BW942C on in vitro ion transport were measured in rabbit ileum mounted in Ussing chambers. In vitro, BW942C decreased basal short-circuit current (2.26 and 3.15 mueq cm-2 h-1 in experimental samples and controls, respectively; n = 7, P less than 0.05) and increased basal net Cl absorption (1.59 and 0.50 mueq cm-2 h-1 in experimental samples and controls, respectively; P less than 0.025). Net Na absorption was also increased, but not significantly. BW942C did not block the secretory response to a maximal dose of purified heat-stable toxin. BW942C directly enhanced intestinal fluid absorption. In the Y-1 adrenal cell assay, 5 mg of BW942C per ml inhibited the cytopathic effect caused by cholera toxin or heat-labile enterotoxin of E. coli. In the rabbit ileal loop assay, E. coli heat stable toxin, E. coli heat-labile enterotoxin, and cholera toxin were inhibited 35 to 70% by administration of BW942C. With the suckling mouse model, the fluid accumulation caused by E. coli heat-stable toxin was ablated by prior treatment with BW942C. The drug is currently being evaluated in patients with acute secretory diarrhea to determine its effect on clinical symptoms. PMID- 3838972 TI - Intrathecal orgotein. AB - During the period 1971-78, 133 intrathecal injections of orgotein or superoxide dismutase have been given, mostly to patients with multiple sclerosis. Evaluation of the effect was deficient but the impression was that of improvement and 45% of the 58 patients with multiple sclerosis requested further intrathecal injections. In one case, intrathecal injections had a good effect against allergic headaches after myelography. Determination of orgotein in samples of cerebrospinal fluid from 16 patients with multiple sclerosis gave remarkable results in that the content of orgotein was significantly lower than the level reported by other investigators. PMID- 3838971 TI - Augmentin bioavailability following cimetidine, aluminum hydroxide and milk. AB - Previous studies [Jackson et al. 1980] have shown that the bioavailability of Augmentin is not affected by food. The present work has shown that aluminum hydroxide, milk and cimetidine do have some influence on the bioavailability of a single dose of oral Augmentin, but the small differences observed are unlikely to be of therapeutic importance. It is concluded that Augmentin may be administered in clinical practice with any of these substances. PMID- 3838973 TI - Vitrectomy. Clinical data and cytologic findings of vitrectomy specimens. AB - Fifty vitreous specimens obtained by routine pars plana vitrectomies were examined using Millipore filter processing and Papanicolaou staining technique. Cytological findings comprised of macrophages (melanophages, siderophages) and inflammatory cells, mainly lymphocytes. In a few cases, pigmented an nonpigmented epithelial cells of the ciliary body were encountered, retinal sensory cells only in one case. Fibroblasts and fragments of granulation tissue occurred in four of the 14 diabetic cases, in four of the 21 posttraumatic cases, in one case of chronic uveitis as well as in one case of retrolental fibroplasia. Fragments of ciliary body were in three specimens from injured eyes. In one case of chronic uveitis slight suspicion of ciliary body melanoma was aroused on the basis of distinct cellular atypia. There was agreement between clinical and cytological diagnosis in most cases, but particularly in posttraumatic and inflammatory diseases cytologic examination offered new diagnostic data. This is a new method of microscopical verification of the condition in the vitreous body in various diseases. Our experiences are preliminary but we feel that this method has proven its availability. PMID- 3838974 TI - Distribution of spectrin and lectin-binding materials in surface lamina of RPE cells. AB - Explants of embryonic chick retinal pigmented epithelium (RPE) form colonies in primary cultures in which the cells occupying the center of the colony are cuboidal, pigmented, and resemble closely the differentiated RPE cells found in vivo, while those towards the periphery gradually become less differentiated, flatter, nonpigmented, and motile. In the present article we describe the distribution of alpha-spectrin in cells in different parts of the RPE colony and compare it with that of the surface lamina components that bind the lectins, concanavalin A (Con A) and wheat germ agglutinin (WGA). Spectrin is present predominantly in the cell cortex in both differentiated and undifferentiated cells and seems to be accumulated especially heavily in the differentiated RPE cells in the colony center that have acquired the in vivo morphology. The distribution of lectin-binding materials in the surface lamina of the RPE cells is similar but not identical to that of alpha-spectrin. This is particularly evident in the flatter RPE cells along the edge of the colony in which surface lamina components visualized by fluorescein isothiocyanate (FITC)-WGA are distributed in the punctate pattern that is distinctly different from the reticular pattern in which alpha-spectrin is distributed. Also, in cells of the intermediate and central zones, strong staining along the edge of the cells was seen with antibodies to alpha-spectrin but not with FITC-WGA. Thus, a codistribution similar to that reported for the spectrin-like proteins and WGA binding material in mesenchymally derived cells is not found in RPE cells. PMID- 3838975 TI - Hemoglobin kenitra alpha 2 beta 2 69 (E13) Gly----Arg. A new beta variant of elevated expression associated with alpha-thalassemia, found in a Moroccan woman. AB - Hemoglobin Kenitra is a new variant of the beta chain alpha 2 beta 2 69 (E13) Gly ---Arg which does not produce any clinical symptoms. It is a slow-moving hemoglobin with a distinctive pattern of electrophoretic mobilities. The stability test was negative. Oxygen affinity studies were not performed. It was found in association with alpha-thalassemia and microcytosis, but paradoxically a high expression of the variant (55%) was observed. PMID- 3838976 TI - A new unstable, high oxygen affinity hemoglobin: Hb Nagoya or beta 97 (FG4) His-- -Pro. AB - An unstable hemoglobin was detected by isopropanol and heat precipitation tests in a 49-year-old Japanese man suffering from acute exacerbation of a chronic hemolytic disorder which was apparently triggered by infection of cholelithiasis. One of his two sons carried the same abnormal hemoglobin, and was jaundiced, but otherwise healthy, without anemia. The abnormal hemoglobin focused at a slightly more anodic position than Hb A in thin layer polyacrylamide gel electrofocusing. The abnormal beta chain emerged after normal beta chain in reverse phase high performance liquid chromatography of the hemolysate. It comprised 16.7% and 25.5% of the total beta chain in the propositus and his son, respectively. The partially heme-depleted abnormal beta subunit was precipitated with p chloromercuribenzoic acid, and the abnormal beta chain was isolated by urea CM cellulose column chromatography. Structural analysis demonstrated substitution of proline for histidine at position 97 (FG4) in the beta chain. The abnormal hemoglobin was purified by ion-exchange column chromatography. It showed a hyperbolic oxygen equilibrium curve indicating a high oxygen affinity and the absence of cooperative intersubunit interaction. Subunit dissociation seemed to be slightly enhanced. The variant was markedly susceptible to oxidation and rapidly lost heme upon oxidation. PMID- 3838977 TI - Hb Volga or alpha 2 beta 2 27(B9)Ala----Asp in an Italian family. PMID- 3838978 TI - Specificity of cytochemical demonstration of adenylate cyclase in liver using adenylate-(beta, gamma-methylene) diphosphate as substrate. AB - Adenylate cyclase activity was demonstrated cytochemically in rat liver for the first time under the light microscope using cryostat sections mounted on glass cover slips and fixed with 1% glutaraldehyde for 1 min. Adenylate-(beta, gamma methylene)diphosphate (AMP-P(CH2)P) was introduced as a new substrate for adenylate cyclase. It was found that adenylate cyclase was distributed heterogenously within the liver lobule. The enzyme activity was stronger in the area surrounding the central vein. A more specific localization at the plasma membrane and less unspecific background was obtained with AMP-P(CH2)P as compared to adenylylimidodiphosphate (AMP-P(NH)P). The specificity of the enzyme reaction using AMP-P(CH2)P was proved by increased formation of reaction product in the presence of 0.05 mg/ml glucagon and 0.125 mg/ml cholera toxin, as well as by inhibition of the reaction with 0.05 mg/ml alloxan. These effects were also observed at the electron microscopic level. On the other hand, no increase in reaction was observed in the presence of glucagon with AMP-P(NH)P as a substrate for adenylate cyclase, and only a weak activation was observed after adding cholera toxin; alloxan-inhibition was not complete. These effects may be due to the presence of enzymes which hydrolyze AMP-P(NH)P nonspecifically, superimposing on the product of adenylate cyclase activity. We therefore suggest the use of AMP P(CH2)P as substrate for histochemical adenylate cyclase demonstration in the liver. PMID- 3838979 TI - Chlorocardicin, a monocyclic beta-lactam from a Streptomyces sp. II. Isolation, physico-chemical properties and structure determination. AB - Chlorocardicin, a novel monocyclic beta-lactam, was isolated from the fermentation broth of a Streptomyces sp. by the use of non-ionic porous resin and reverse phase chromatography. This chlorine-containing antibiotic is structurally related to nocardicin A. Its physico-chemical characteristics and detailed NMR analysis are described. PMID- 3838980 TI - Mechanisms of aminoglycoside-resistance of Streptomyces harboring resistant genes obtained from antibiotic-producers. PMID- 3838981 TI - HR 810 and BMY-28142, two new cephalosporins with broad-spectrum activity: an in vitro comparison with other beta-lactam antibiotics. AB - The in-vitro activity of the new parenteral cephalosporins, HR 810 (HR) and BMY 28142 (BMY), was compared with that of other beta-lactam antibiotics, including cefotaxime, against a total of 315 recent clinical isolates and characterized beta-lactamase producers. An agar dilution procedure was used to determine MICs and two inocula (10(4) and 10(6) cfu) were used throughout. Against all species of the Enterobacteriaceae tested, both HR and BMY were as active as, or slightly more active than, cefotaxime. HR differed from cefotaxime mainly in being eight fold more active against Pseudomonas aeruginosa and two-fold more active against Staphylococcus aureus. BMY was also eight-fold more active than cefotaxime against Ps. aeruginosa but was two-fold less active than the latter against Staph. aureus. Both new compounds had good activity against Haemophilus influenzae, including the beta-lactamase producing strains of that species, and both had poor activity against the Bacteroides fragilis group (MIC90 greater than 128 mg/l). PMID- 3838982 TI - Diet and duodenal ulcer. PMID- 3838983 TI - Glycinin A3B4 mRNA. Cloning and sequencing of double-stranded cDNA complementary to a soybean storage protein. AB - The cDNA clones encoding the precursor form of glycinin A3B4 subunit have been identified from a library of soybean cotyledonary cDNA clones in the plasmid pBR322 by a combination of differential colony hybridizations, and then by immunoprecipitation of hybrid-selected translation product with A3-mono-specific antiserum. A recombinant plasmid, designated pGA3B41425, from one of six clones covering codons for the NH2-terminal region of the subunit was sequenced, and the amino acid sequence was inferred from the nucleotide sequence, which showed that the mRNA codes for a precursor protein of 516 amino acids. Analysis of this cDNA also showed that it contained 1786 nucleotides of mRNA sequence with a 5' terminal nontranslated region of 46 nucleotides, a signal peptide region corresponding to 24 amino acids, an A3 acidic subunit region corresponding to 320 amino acids followed by a B4 basic subunit region corresponding to 172 amino acids, and a 3'-terminal nontranslated region of 192 nucleotides, which contained two characteristic AAUAAA sequences that ended 110 nucleotides and 26 nucleotides from a 3'-terminal poly(A) segment, respectively. Our results confirm that glycinin is synthesized as precursor polypeptides which undergo post translational processing to form the nonrandom polypeptide pairs via disulfide bonds. The inferred amino acid sequence of the mature basic subunit, B4, was compared to that of the basic subunit of pea legumin, Leg Beta, which contained 185 amino acids. Using an alignment that permitted a maximum homology of amino acids, it was found that overall 42% of the amino acid positions are identical in both proteins. These results led us to conclude that both storage proteins have a common ancestor. PMID- 3838984 TI - Nucleotide sequence of cloned cDNA specific for rat ribosomal protein S11. AB - A cDNA clone specific for rat ribosomal protein S11 was isolated by hybrid selected translation from the cDNA library made for 8-9 S poly(A) RNA from regenerating rat liver. Since this cDNA had not enough length, another clone was selected by colony hybridization using a fragment of isolated cDNA as a probe. The nucleotide sequence of the cDNA was determined. The sequence contains 2 base pairs from the 5' noncoding region, the entire coding region of 477 base pairs, and the 3' noncoding region of 55 base pairs besides the poly(A) tail. The primary structure of the protein S11 was deduced from the nucleotide sequence. It consists of 157 amino acids. Its molecular weight is 18,299. The calculated amino acid composition is consistent with the reported composition of S11 determined on the protein hydrolysate. The amino acid sequence showed a marked homology with that of S16 of Halobacterium cutirubrum and an appreciable homology with that of S17 of Escherichia coli. PMID- 3838985 TI - Amino acid sequence homologies between rabbit, rat, and human serum retinol binding proteins. AB - The main transporting protein for vitamin A in rabbit serum, the retinol-binding protein (RBP), was isolated and its amino acid sequence determined. Rabbit RBP was found to be highly homologous to human RBP, whose amino acid sequence was elucidated earlier, and to rat RBP. The rat RBP sequence was obtained by combining information deduced from the nucleotide sequences of two overlapping cDNA clones with the NH2-terminal sequence of the isolated protein determined by automated Edman degradation. The identity between the three proteins is approximately 90%. The high degree of homology between RBP molecules from different species is probably explained by the fact that RBP participates in at least three types of molecular interactions: in the binding of prealbumin, in the interaction with retinol, and in the recognition of a specific cell surface receptor. All these interactions should lead to a conservation of RBP structure. The amino acid differences between rabbit, rat, and human RBP are discussed in light of the recent elucidation of the three-dimensional structure of human RBP. Hybridization of a probe isolated from a rat RBP cDNA clone to restriction enzyme digested genomic DNA from rat and mouse suggests that RBP is encoded by a single gene. PMID- 3838986 TI - Wound-induced proteinase inhibitors from tomato leaves. II. The cDNA-deduced primary structure of pre-inhibitor II. AB - A cDNA containing the complete amino acid-coding region of wound-induced tomato Inhibitor II was constructed in the plasmid pUC9. The open reading frame codes for 148 amino acids including a 25-amino acid signal sequence preceding the N terminal lysine of the mature Inhibitor II. The Inhibitor II sequence exhibits two domains, one domain having a trypsin inhibitory site and the other a chymotrypsin inhibitory site, apparently evolved from a smaller gene by a process of gene duplication and elongation. The amino acid sequence of tomato leaf Inhibitor II exhibits homology with two small proteinase inhibitors isolated from potato tuber and an inhibitor from eggplant. The small potato tuber inhibitors are homologous with 33 amino acids of the N-terminal domain and 19 amino acids from the C-terminal domain. Two identical nucleotide sequences of Inhibitor II cDNA in the 3' noncoding region were present that were also found in an Inhibitor I cDNA. These include an atypical polyadenylation signal, AATAAG, and a 10-base palindromic sequence, CATTATAATG, for which no function is yet known. PMID- 3838987 TI - Mechanisms of enhancement of cholesteryl ester transfer protein activity by lipolysis. AB - Lipoprotein lipase enhances the cholesteryl ester transfer protein (CETP) mediated transfer of cholesteryl esters from plasma high density lipoproteins (HDL) to very low density lipoproteins (VLDL). In time course studies the stimulation of cholesteryl ester transfer by bovine milk lipase was correlated with accumulation of fatty acids in VLDL remnants. As the amount of fatty acid poor albumin in the incubations was increased, there was decreased accumulation of fatty acids in VLDL remnants and a parallel decrease in the stimulation of cholesteryl ester transfer by lipolysis. Addition of sodium oleate to VLDL and albumin resulted in stimulation of the CETP-mediated transfer of cholesteryl esters from HDL to VLDL. The stimulation of transfer of cholesteryl esters into previously lipolyzed VLDL was abolished by lowering the pH from 7.5 to 6.0, consistent with a role of lipoprotein ionized fatty acids. CETP-mediated cholesteryl ester transfer from HDL to VLDL was also augmented by phosholipase A2 and by a bacterial lipase which lacked phospholipase activity. When VLDL and HDL were re-isolated after a lipolysis experiment, both lipoproteins stimulated CETP activity. Postlipolysis VLDL and HDL bound much more CETP than native VLDL or HDL. Lipolysis of apoprotein-free phospholipid/triglyceride emulsions also resulted in enhanced binding of CETP to the emulsion particles. Incubation conditions which abolished the enhanced cholesteryl ester transfer into VLDL remnants reduced binding of CETP to remnants, emulsions, and HDL. In conclusion, the enhanced CETP-mediated transfer of cholesteryl esters from HDL to VLDL during lipolysis is related to the accumulation of products of lipolysis, especially fatty acids, in the lipoproteins. Lipids accumulating in VLDL remnants and HDL as a result of lipolysis may augment binding of CETP to these lipoproteins, leading to more efficient transfer of cholesteryl esters from HDL to VLDL. PMID- 3838988 TI - Guanine nucleotide regulation of a mammalian myocardial muscarinic receptor system. Evidence for homo- and heterotropic cooperativity in ligand binding analyzed by computer-assisted curve fitting. AB - Highly purified dog heart sarcolemmal membranes, with a content of approximately 5 pmol of muscarinic acetylcholine receptor (mAChR)/mg of protein, were analyzed for mAChR-mediated inhibition of adenylyl cyclase and ligand binding in the absence and the presence of guanine nucleotides. Adenylyl cyclase was found to be coupled to the mAChR, being attenuated approximately 30% in a GTP-dependent manner. Direct binding studies, using 3H-labeled oxotremorine M, showed high affinity binding (apparent KD = 10 nM) that was reduced on nucleotide addition. Dose-response curves for GDP, GTP, and guanyl-5'-yl imidodiphosphate showed them to be equipotent. On the basis of pirenzepine binding, only one type of mAChR, commonly referred to as M2, was detected. Direct binding of [3H]quinuclidinyl benzilate [( 3H]QNB) uncovered 50% more binding sites than 150 nM 3H-labeled oxotremorine M; addition of guanine nucleotides uncovered the existence of positive cooperativity in the binding of [3H]QNB. Agonist displacement curves of [3H]QNB binding, without and with guanine nucleotides, extended over several orders of magnitude, which is inconsistent with single site competitive kinetics. The results and their analysis by computer-assisted curve fitting indicated that the data are well fitted by a model in which a receptor is at least bivalent and exists in two states: one with and the other without cooperativity between its sites, with guanine nucleotides decreasing both the degree of cooperativity between the sites and the proportion of the receptor that is in the cooperative form. Since the guanine nucleotide effect is mediated by the Ni coupling protein, it is suggested that direct binding detects R'Ni complexes (cooperative), R"NiG complexes (cooperative but distinct from R'Ni), and R0 complexes (non-cooperative and unaffected by Ni or NiG), where R = mAChR, Ni = the inhibitory regulatory component of adenylyl cyclase unaffected by guanine nucleotide, and NiG = Ni affected by guanine nucleotide (G). PMID- 3838989 TI - Complete cDNA and protein sequence of a pregnenolone 16 alpha-carbonitrile induced cytochrome P-450. A representative of a new gene family. AB - A full-length cDNA complementary to rat liver mRNA coding for pregnenolone 16 alpha-carbonitrile-induced cytochrome P-450 (P-450PCN) was isolated and completely sequenced. P-450PCN mRNA is 2038 nucleotides in length and has a continuous reading frame (82-1596) that encodes a protein of 504 amino acids (Mr = 57,917). The amino-terminal sequence of 18 residues of the purified P-450PCN protein agrees with the open reading frame of the cDNA sequence. The P-450PCN mRNA nucleotide and amino acid sequences clearly establish that this cytochrome is a member of a separate P-450 family different from the phenobarbital-induced (e.g. P-450e) and 3-methyl-cholanthrene-induced (e.g. P-450c) P-450 gene families. P-450PCN shares 38 and 37% nucleotide similarity and 33 and 33% amino acid similarity with P-450e and P-450c, respectively. P-450PCN, P-450e, and P 450c exhibit greater homology in the C-terminal half than in the N-terminal half of the proteins. Included in this region is the cysteinyl fragment (surrounding residue 443 in P-450PCN), which appears to be the most conserved among all fragments of other P-450 proteins. Of interest, the N-terminal region of P-450PCN does not contain the cysteine residue previously thought to contribute the thiolate ligand to the heme iron in P-450 proteins; these data establish more firmly the cysteine residue located in the carboxylterminal region as serving this function. These sequence studies further support the conclusion derived from chromosomal localization studies and Southern blot analyses that P-450PCN represents a member of a distinct third family of P-450 genes, which diverged from a common ancestor more than 200 million years ago. PMID- 3838990 TI - ATP-dependent unwinding of messenger RNA structure by eukaryotic initiation factors. AB - Interaction of protein synthesis initiation factors with mRNA has been studied in order to characterize early events in the eukaryotic translation pathway. Individual reovirus mRNAs labeled with 32P in the alpha position relative to the m7G cap and eukaryotic initiation factor (eIF)-4A, -4B, and -4F purified from rabbit reticulocytes were employed. It was found that eIF-4A causes a structural change in mRNA, as evidenced by a nuclease sensitivity test: addition of high concentrations of eIF-4A greatly increase the nuclease sensitivity of the mRNA, suggesting that this factor can melt or "unwind" mRNA structure. ATP is required for this reaction. At low concentrations of eIF-4A, addition of eIF-4B is required for maximal unwinding activity. Thus eIF-4B enhances eIF-4A activity. Addition of eIF-4F also makes the mRNA sensitive to nuclease indicating a similar unwinding role to that of eIF-4A. Stoichiometric comparisons indicate that eIF-4F is more than 20-fold more efficient than eIF-4A in catalyzing this reaction. The unwinding activity of eIF-4F is inhibited by m7GDP, while that of eIF-4A is not. This suggests that eIF-4A functions independent of the 5' cap structure. Our results also suggest that the unwinding activity of eIF-4F is located in the 46,000-dalton polypeptide of this complex, which has shown by others to be similar or identical to eIF-4A. PMID- 3838991 TI - Purification and preliminary characterization of a macromolecular inhibitor of glucocorticoid receptor binding to DNA. AB - Rat liver cytosol contains a heat-labile macromolecule that inhibits the binding of the transformed glucocorticoid-receptor complex to nuclei or DNA-cellulose (Milgrom, E., and Atger, M. (1975) J. Steroid Biochem. 6, 487-492; Simons, S. S., Jr., Martinez, H. M., Garcea, R. L., Baxter, J. D., and Tomkins, G. M. (1976) J. Biol. Chem. 251, 334-343. We have developed a quantitative assay for the inhibitor and have purified it 600-700-fold by ammonium sulfate precipitation, ethanol precipitation, and phosphocellulose and Sephacryl S-300 chromatography. The inhibitory activity copurifies with a Mr = 37,000 protein doublet. Under low salt conditions, both the inhibitory activity and the 37-kDa protein doublet behave as high Mr aggregates that subsequently dissociate in the presence of salt. The inhibitor is positively charged at physiological pH, and it is not affected by digestion with several serine proteases or RNase. The inhibitor does not affect the transformation process, and it does not cause the release of steroid-receptor complexes that have been prebound to DNA-cellulose. The inhibitor preparation does not cleave receptors in L-cell cytosol that are covalently labeled with the site-specific affinity steroid [3H]dexamethasone 21 mesylate. If the steroid-receptor complex is first separated from the great majority of cytosol protein by transforming it and binding it to DNA-cellulose, addition of the inhibitor preparation results in receptor cleavage. Under these conditions, cleavage can be blocked with 1-chloro-3-tosylamido-7-amino-L-2 heptanone and antipain, but protease inhibitors do not affect the inhibition of DNA binding that occurs in whole cytosol. The inhibitor acts through an interaction with the receptor, not with DNA. We suggest that the inhibitor may prove to be a useful tool for studying the interaction of the steroid-receptor complex with DNA or nuclei and speculate that it may be important in determining normal events of the receptor cycle as they occur in the intact cell. PMID- 3838992 TI - Functional domains of chicken gizzard myosin light chain kinase. AB - The proteolytic susceptibility of chicken gizzard myosin light chain kinase, a calmodulin-dependent enzyme, has been utilized to define the relative location of the catalytic and regulatory domains of the enzyme. Myosin light chain kinase isolated from this source exhibits a Mr of 130,000 and is extremely sensitive to trypsin at 24 degrees C; however, the molecule is divided into susceptible and resistant domains such that proteolysis proceeds rapidly and at multiple sites in the sensitive regions even at 4 degrees C while the rest of the molecule remains relatively resistant to digestion. One of these sensitive areas is the calmodulin binding domain. On the other hand, Staphylococcus aureus V8 protease digestion generates a calmodulin-binding fragment (Mr = 70,000) that retains Ca2+/calmodulin-dependent enzymatic activity and both of the phosphorylation sites recognized by cAMP-dependent protein kinase. In contrast, treatment with chymotrypsin produces a 95,000 Mr calmodulin-binding fragment that contains only the calmodulin-modulated phosphorylation site. Sequential proteolytic digestion studies demonstrated that the chymotryptic cleavage site responsible for the generation of this 95,000 Mr peptide is within 3,000 Mr of the V8 protease site which produces the 70,000 Mr fragment. Moreover, the non-calmodulin-modulated phosphorylation site must exist in this 3,000 Mr region. A calmodulin-Sepharose affinity adsorption protocol was developed for the digestion and used to isolate both the 70,000 and 95,000 Mr fragments for further study. Taken together, our results are compatible with a model for chicken gizzard myosin light chain kinase in which there is no overlap between the active site, the calmodulin-binding region, and the two sites phosphorylated by cAMP-dependent protein kinase with regard to their relative position in the primary sequence of the molecule. PMID- 3838993 TI - Photoaffinity labeling of a viral induced protein from tobacco. Characterization of nucleotide-binding properties. AB - We have used the photoaffinity analogs 8-azidoadenosine 5'-triphosphate (8-N3ATP) and 8-azidoguanosine 5'-triphosphate (8-N3GTP) to investigate the relationship between a viral induced protein (Mr = 120,000) in tobacco mosaic virus (TMV) infected tobacco and the TMV-induced RNA-dependent RNA polymerase activity. When the radioactive analogs [gamma-32P]8-N3ATP and [gamma-32P]8-N3GTP were incubated with the tobacco tissue homogenate from TMV-infected plants, incorporation of label occurred into the viral induced protein in the presence of UV light. The incorporation was found to be totally dependent on UV-illumination and greatly enhanced by Mg2+. Saturation of photoincorporated label indicates an apparent Kd of 16 microM (+/- 3 microM) and 12 microM (+/- 3 microM) for 8-N3ATP and 8-N3GTP, respectively. Protection against photolabeling by [gamma-32P]8-N3ATP and [gamma 32P]8-N3GTP with various nonradioactive nucleotides and nucleosides suggests that the photolabeled site is protected best by nucleoside triphosphates. At 200 microM both deoxyribonucleoside triphosphates and ribonucleoside triphosphates were very effective at protecting the site from photolabeling. These data suggest that the photolabeled protein may be part of an RNA-dependent RNA polymerase. The utility of nucleotide photoaffinity analogs as a method to study viral induced nucleotide-binding proteins is discussed. PMID- 3838994 TI - Stimulation of phospholipase A2 activity by oxygen-derived free radicals in isolated brain capillaries. AB - An exogenous free radical generating system added to isolated brain capillaries induces degradation of phospholipids. This inductive effect reflects increased phospholipase activities as measured by fatty acid composition of various phospholipid fractions. The correlation of phospholipid degradation with stimulation of phospholipases was further investigated by using cationic amphiphilic agents, which are known to be phospholipase A2 inhibitors. The breakdown of phospholipids was inhibited by the pretreatment of isolated capillaries with these drugs. PMID- 3838995 TI - Pyrimidine nucleoside phosphorylase assay by automated high-performance liquid chromatography. AB - A new assay for pyrimidine nucleoside phosphorylase is reported. This method utilizes an isocratic reversed-phase high-performance liquid chromatographic system for separation of nucleosides and bases. Product detection is accompanied by ultraviolet monitoring and radioactive flow detection. Use of an automated sample injector allows for the analysis of a series of samples, with data recorded onto a microprocessor-based cassette recorder. Data can then be downloaded into computer memory. The velocity of uridine phosphorylase (E.C. 2.4.2.3) was a linear function of enzyme concentration. The Michaelis constant for uridine at pH 8.0 was found to be in close agreement with the value obtained by a thin-layer chromatographic assay method. PMID- 3838996 TI - Separation of gangliosides by anion-exchange chromatography on Mono Q. AB - A new type of strong anion-exchange resin, Mono Q, has been used in the separation of brain gangliosides. The resin consists of monodisperse particles (9.8 micron) and was used in prepacked columns with a bed volume of 1 ml. The gangliosides were separated into mono-, di-, tri- and tetrasialoganglioside fractions by a discontinuous gradient of potassium acetate in methanol. The separation was complete in a volume of 50 ml. The major advantages of the new procedure compared to conventional methods are the shorter separation time, higher loading capacity and recovery of separated ganglioside fractions in small solvent volumes. The procedure was applied to the separation of gangliosides from normal human and GM2-gangliosidosis brain. PMID- 3838998 TI - The effect of carbimazole on thyroid autoantibody synthesis by thyroid lymphocytes. AB - Thyroid autoantibody synthesis was investigated in cultures of lymphocytes isolated from several sources, including thyroid and lymph nodes from patients with hyperthyroid Graves' disease treated preoperatively with carbimazole or propranolol. The ability of thyroid lymphocytes to secrete immunoglobulins, including thyroid microsomal or thyroglobulin autoantibodies, was markedly reduced in lymphocyte suspensions obtained from patients treated with carbimazole compared with suspensions from patients treated with propranolol. This effect (which was greater in individuals treated with carbimazole for longer periods) was attributable to a significant reduction in the number of viable lymphocytes present after the 14-day culture interval. In contrast, the type of preoperative therapy had little effect on cultures of lymphocytes obtained from lymph nodes draining the thyroid. Although it is not yet clear whether carbimazole exerts its effects in vivo by direct immunosuppression or indirectly by altering the thyroid microenvironment, our observations indicate that the fall in serum levels of thyroid autoantibodies that occurs during carbimazole therapy is related to an effect of the drug on lymphocytes within the thyroid. PMID- 3838997 TI - Coupling of iodotyrosine catalyzed by human thyroid peroxidase in vitro. AB - The coupling of iodotyrosine (coupling reaction) is one of the least studied in the formation of thyroid hormone, particularly in human thyroid diseases. This paper describes a method of measuring iodotyrosine coupling catalyzed by human thyroid peroxidase (TPO) in vitro. There were two important requirements to demonstrate the coupling reaction: 1) thyroglobulin with a low thyroid hormone content, and 2) partially purified TPO. Thyroglobulin with low thyroid hormone content was obtained from Grave's and follicular adenoma tissues after propylthiouracil (PTU) therapy and L-T4 therapy, respectively. TPO was prepared from Graves' thyroid by solubilizing the 100,000 X g pellet of thyroid homogenate with sodium deoxycholate and trypsin, followed by Sephacryl S-300 gel filtration. Before the coupling reaction, thyroglobulin was iodinated with chloramine-T and potassium iodide, followed by dialysis. The coupling reaction was carried out by incubating newly iodinated thyroglobulin with TPO, diiodotyrosine, a coupling stimulator, and a H2O2-generating system (glucose and glucose oxidase) for 20 min at 37 C. After thyroglobulin was digested with Pronase, the thyroid hormone content of the thyroid digest was measured by RIA. Coupling activity was measured by the amount of newly formed T3 (nanograms of T3 per mg thyroglobulin). The time course of coupling reaction showed a progressive increase in coupling activity up to 30 min, and the reaction was temperature and pH dependent, with a pH optimum of 7.0. Coupling activity in the presence of H2O2 and TPO was 43 +/- 5.0 ng T3/mg thyroglobulin (mean +/- SD of triplicate samples), and addition of diiodotyrosine to the H2O2-TPO system caused a nearly 3-fold increase in coupling activity. This method has potential utilization for measurement of peroxidase coupling activity, since there was a linear relationship between the measured coupling activity and the amount of added TPO when the TPO concentration was over 3 micrograms/300 microliter. Methimazole (MMI) and PTU had similar potencies in inhibiting the TPO catalyzed coupling reaction, whereas MMI was distinctly more potent than PTU as an inhibitor of TPO-mediated iodination in vitro. The different potencies of MMI in the two reactions suggest that different inhibitory mechanisms may be involved in iodination and coupling. The reducing agent, sodium metabisulfite, was also found to be a more potent inhibitor of the TPO-mediated coupling reaction than of the TPO-mediated iodination reaction. The method of iodotyrosine coupling described here may be useful to investigate the coupling step of thyroid hormone formation in human thyroid diseases. PMID- 3838999 TI - Evidence of extraocular muscle restriction in autoimmune thyroid disease. AB - Patients with Graves' disease lacking eye symptoms frequently have abnormal intraocular pressure (IOP) increases on upward gaze (greater than or equal to 3 mm Hg) indicative of apparent subclinical ophthalmopathy. Because of the close relationship between Graves' disease (GD) and Hashimoto's thyroiditis (HT), we examined 30 patients with a history of HT as well as 26 patients with a history of GD, 4 patients with a history of subacute thyroiditis, 1 patient with a history of silent thyroiditis, and 25 normal subjects for the presence of IOP abnormalities at 15 degrees and 25 degrees upgaze. While all of the patients were asymptomatic, had no exophthalmos, and were euthyroid at the time of the exam, Hertel exophthalmometer readings (mean +/- SD) for the patients with GD were significantly higher (P less than 0.005) than those for either the HT patients or normal subjects (17.1 +/- 2.4 vs. 14.5 +/- 2.3 vs. 14.4 +/- 4.2 mm, respectively). At 15 degrees upgaze, IOP abnormalities occurred in 25% and 13% of patients with GD and HT, respectively. At 25 degrees upgaze, these figures rose to 54% for the GD patients and 37% in HT patients. Only 1 of 25 normal subjects had elevated IOP changes on upgaze, as did the 1 patient with silent thyroiditis, but the patients with subacute thyroiditis did not. These data suggest the frequent presence of extraocular muscle restriction in patients with a history of HT as well as in patients with a history of GD. Maximal detection of these IOP abnormalities requires that patients be examined at 25 degrees upgaze. These data support the belief that the autoimmune bases of both GD and HT are closely linked, at least as manifested by eye muscle involvement. PMID- 3839000 TI - Changes in calcium homeostasis in acromegaly treated by pituitary adenomectomy. AB - Patients with acromegaly have alterations in mineral metabolism. To determine the effect of correction of excess GH secretion on calcium metabolism, we studied 12 acromegalic patients before and 3-4 weeks after pituitary adenomectomy. Treatment of acromegaly resulted in significant decreases in both serum calcium [from 9.3 +/- 0.2 to 8.7 +/- 0.1 mg/dl (mean +/- SEM); P less than 0.01] and urinary calcium excretion (from 200 +/- 24 to 88 +/- 12 mg/24 h; P less than 0.0002). Serum phosphate also decreased significantly (P less than 0.01) from 4.8 +/- 0.2 to 4.3 +/- 0.2 mg/dl. Both serum immunoreactive PTH and calcitonin levels were normal initially and did not change after surgery. The mean serum 25 hydroxyvitamin D (25OHD) level was significantly (P less than 0.01) lower and the 1,25-dihydroxyvitamin D [1,25-(OH)2D] level was significantly (P less than 0.0001) higher in acromegaly compared with measurements in 25 normal subjects. After surgery, the serum 25OHD level did not change; however, the serum 1,25 (OH)2D concentration fell significantly (P less than 0.0001) from 60 +/- 4 to 43 +/- 2 pg/ml. A positive correlation was found between the decrements in urinary calcium excretion and the serum 1,25-(OH)2D level when the comparison was made between the decrements as percentages of pretreatment values (r = 0.64; P less than 0.05). The accumulated data suggest that the hypercalciuria in acromegaly might be due to intestinal calcium hyperabsorption, which could be attributed to the elevated circulating 1,25-(OH)2D level. Excessive GH secretion might stimulate the production of 1,25-(OH)2D and might also directly stimulate calcium absorption. PMID- 3839001 TI - Development of subtype-specific and heterosubtypic antibodies to the influenza A virus hemagglutinin after primary infection in children. AB - Children undergoing primary infection with an H1N1 or H3N2 influenza A virus developed subtype-specific hemagglutination inhibition antibodies and enzyme linked immunosorbent assay antibodies to purified hemagglutinin (HA) of the infecting virus subtype. They also developed lower titered ELISA antibodies to the noninfecting H1 or H3 HA and to H8 (an avian strain) HA. Thus, after primary infection with an influenza A virus, children develop enzyme-linked immunosorbent assay, but not hemagglutination inhibition, antibodies reactive with heterosubtypic HAs. These heterosubtypic antibodies could influence the response to infection with other wild-type or attenuated vaccine strains of influenza A virus. PMID- 3839002 TI - Characterization and analysis of an apparent autophosphorylation of chicken gizzard myosin light chain kinase. AB - A phosphorylation occurs at two sites in chicken gizzard myosin light chain kinase that appears to be catalyzed by an autophosphorylation reaction. This reaction is inhibited by approximately 75% in the presence of Ca2+-calmodulin, but is unaffected by the cAMP-dependent protein kinase inhibitor. Whereas the catalytic subunit of cAMP-dependent protein kinase phosphorylates myosin light chain kinase at only serine residues, the non cAMP-dependent phosphorylation occurs at both serine and threonine residues. One, if not both, of these latter sites are distinct from the sites recognized by the catalytic subunit of cAMP dependent protein kinase. Consequently, there must be at least three and possibly four sites in myosin light chain kinase capable of incorporating phosphate, either in response to catalytic subunit or by autophosphorylation. PMID- 3839003 TI - Epidural and intrathecal morphine in intensive care units. AB - Analgesia and sedation for patients in intensive care units (ICU) who require mechanical ventilation are most commonly provided by intermittent i.v. injections of opiates and benzodiazepines. However, the technique has a number of disadvantages. Also, in many cases these drugs are inadequate, even in large doses, and muscle relaxants may be necessary for patient respirator coordination. The analgesic effect of epidural and intrathecal morphine was studied in 24 ICU patients requiring controlled ventilation. In spite of large doses of phenoperidine, diazepam and a number of other analgesics and sedatives, all patients were restless, agitated and coordinated poorly with the respirator. Through an indwelling epidural catheter morphine (4 mg) was injected intermittently as required in 11 patients and as a continuous infusion (20-40 mg/day) in five patients. In eight patients morphine (2-4 mg) was injected intrathecally as a single injection. Both epidural and intrathecal morphine gave potent analgesia and good patient respirator coordination. The duration of analgesia was shortest after intermittent injections of epidural morphine and longest after intrathecal morphine. However, continuous infusion of morphine in the epidural catheter appears to be the most practical method. In patients with multiple trauma and in patients where frequent assessment of the level of consciousness is important this technique is superior to parenteral analgesic sedative combinations. Intrathecal morphine may be indicated in patients in a compromised position. The daily analgesic requirement can be reduced by about 10 100 times by the use of epidural and intrathecal morphine respectively. PMID- 3839004 TI - Absolute identification of electric pulse rates and electrode positions by cochlear implant patients. AB - In a single interval task, multichannel cochlear implant patients were asked to identify the members of a set of seven electric stimuli differing in electric pulse rate or electrode position. The perceptual sensitivity index (d') between successive stimuli in a stimulus set was calculated from the confusions among the seven stimuli. The results showed that the pulse rate above which the identification task became difficult varied from 200 to 600 pps from patient to patient. For the identification of the positions of seven bipolar electrode pairs, d' measures for stimulus sets differing in spatial separation or spatial extent were compared. Spatial separation is defined as the fixed distance between the two basal (or apical) electrodes of two successive bipolar electrode pairs in a stimulus set, while spatial extent is defined as the fixed distance between the apical and basal electrodes of each bipolar electrode pair in a stimulus set. The results showed that perceptual performance improved in an orderly way with spatial separation, but was not significantly affected by spatial extent. PMID- 3839005 TI - A charge coupled device-based image cytophotometry system for quantitative histochemistry and cytochemistry. AB - A rapid, semiautomated cytophotometry system for quantitative histochemistry and cytochemistry was constructed. The system consists of a Fairchild charge coupled device (CCD) image camera, a Zeiss Universal microscope, a Datacube analog to digital converter, and a digital Equipment Corporation LSI 11/23 computer operating under RT-11. Computer programs were written in FORTRAN and the MACRO assembly language for the acquisition of data from the CCD device. These data were then used for image segmentation, image display, and calculation of total optical density, perimeter, cell area, and several shape features. The reproducibility of measurement made with the CCD-based cytophotometry system was tested by repeated measurements. The coefficient of variation was estimated to be 1.7% for total optical density and 0.9% for cell area. The CCD-based cytophotometry system was further evaluated by comparing results with measurements made on the same cells with a scanning stage cytophotometer using the HIDACSYS computer programs. Correlation coefficients of 0.96 for total optical density and 0.91 for cell area were obtained between the two systems. We conclude that the high-speed, dimensional stability, small size, and linearity of the CCD-based cytophotometry system will make it useful for quantitative histochemistry and cytochemistry. PMID- 3839007 TI - 1,25-Dihydroxyvitamin D3 and the regulation of the differentiation and function of macrophages and granulocytes. AB - 1,25-Dihydroxyvitamin D3 (1,25(OH)2D3) exerts a differential inhibitory effect on the formation of granulocyte, granulocyte/macrophage, and macrophage colonies grown from mouse bone marrow precursor cells; 50% inhibition was attained at 1.1, 2.3, and 23 nM 1,25(OH)2D3, respectively. The inhibition of colony formation, as well as phagocyte proliferation in liquid cultures, requires the presence of 1,25(OH)2D3 in the early stages of culture (up to 72 h after culture initiation). 1,25(OH)2D3 induces a dose- and time-dependent augmentation of the phagocytic capability of mononuclear phagocytes (up to 100%) towards both heat-killed yeast cells and IgG-coated sheep red blood cells. The augmentation of the phagocytic capability of the mononuclear phagocytes depends critically on when 1,25(OH)2D3 is added. It is effective when added up to 72 h after culture initiation, while at later stages (greater than or equal to 96 h) the cells are no longer induced to express enhanced phagocytic capability. We suggest that these phenomena may be relevant to hemopoietic processes. PMID- 3839006 TI - Induction of tumor-inhibitory macrophages with a novel synthetic immunomodulator, 3,6-bis(2-piperidinoethoxy)acridine trihydrochloride (CL 246,738). AB - 3,6-bis(2-piperidinoethoxy)acridine trihydrochloride (CL 246,738) has been investigated for its immunomodulatory effect on murine macrophages. Incubation of macrophages harvested from the peritoneal cavities of normal mice with the compound for 48 to 72 hr rendered these cells inhibitory to the growth of tumor cells in vitro. Activation of tumor-inhibitory macrophages occurred over a range of concentrations (0.025 to 0.1 micrograms/ml) producing no direct inhibitory effects on tumor cells. Treatment of effector cells with carrageenan abrogated the effect, whereas treatment with anti-Thy-1.2 antibody and C did not, suggesting that the primary effectors were macrophages rather than T lymphocytes. These activated macrophages also manifested in vitro tumor cytolysis. In vivo studies indicated that peritoneal macrophages from mice treated with single oral doses of 100 to 400 mg/kg of the compound were also inhibitory to tumor cell growth in vitro. Effector macrophages became demonstrable in mice as early as 1 day after drug administration, reached peak activity at day 12, and disappeared by day 31, indicating a rapid onset but long-persisting effect. The tumor cytostatic activity of these macrophages was augmented by endotoxin at the dose of endotoxin that, in itself, had no effect. The addition of protease inhibitors, N-alpha-p-tosyl-L-lysine chloromethyl ketone and aprotinin, to cultures markedly diminished the cytostatic effect, suggesting that the release of neutral protease(s) could account for the inhibitory effects of the macrophages. On the other hand, hydrogen peroxide and arginase seemed excluded as the mechanism of action because the effect was not sensitive to treatment with catalase and exogenous arginine. The present findings indicate that CL 246,738 is an orally active immunopotentiator capable of inducing tumor-inhibitory macrophages both in vitro and in vivo. PMID- 3839008 TI - [Effects of mother-infant interaction on maternal milk secretion and dynamics of maternal serum prolactin levels in puerperium]. AB - Effects of maternal-infant interaction on maternal milk secretion and the dynamics of maternal serum prolactin levels in puerperium were examined in 183 normally delivered mothers without any complications. No significant change was observed in the amount of maternal milk secretion between the primiparas and the multiparas. However, there was a significant increase in the amount of maternal milk secretion in the breast feeding group compared to the supplementary feeding group from the second to the sixth day of the puerperium (p less than 0.005). Moreover, the amount of maternal milk secretion increased significantly in the group that adopted the rooming-in system compared to the non rooming-in group (p less than 0.005). And also the significant increase occurred in the encouragement of breast feeding following the adoption of the rooming-in system (x2 = 7.244, p less than 0.01). There was no significant correlation between the amount of maternal milk secretion and the puerperal maternal prolactin levels, but the maternal serum prolactin level at 24 hours after delivery was significantly higher in the breast feeding group than in the supplementary feeding group (p less than 0.01). Also, the maternal serum prolactin was increased by the stimulation of the baby crying the same as by suckling or manual expression. These facts suggest that the maternal-infant bonding plays the important role in the encouragement of the breast feeding and the maternal serum prolactin may have some actions on the mechanism of maternal milk secretion. PMID- 3839009 TI - Automatic identification of late potentials. AB - The purpose of the present study was to develop an algorithm for the automated identification of ventricular late potentials (LP) that can be recorded non invasively by means of the signal averaging technique. This new algorithm was designed to determine the possible presence and the onset and duration of a given LP by analyzing the end of the QRS complex. As there is no objective standard for identifying these late potentials, the new algorithm was developed by continuous comparison and adaptation to visual analysis in 65 patients (algorithm definition phase). In the subsequent trial phase, visual and automated analysis were compared in a second cohort of 50 patients (40 patients with and 10 patients without late potentials). In the latter 50 patients, the results obtained with the new algorithm corresponded to the analysis made by at least two of three independent observers in 92% of cases. In only four patients--one without and three with late potentials--there was no agreement between the observers and the new program. In conclusion, the new algorithm can be used reliably for the evaluation of late potentials. The results are more objective. They are reproducible, which is of great advantage when data from different groups are to be compared or when less experienced investigators are using non-invasive methods for registration of late potentials. PMID- 3839010 TI - Curability of Burkitt's lymphoma with high-dose cyclophosphamide-high-dose methotrexate therapy and intrathecal chemoprophylaxis. AB - Twenty-four children with Burkitt's lymphoma were treated beginning May 1976 with a regimen alternating high doses of cyclophosphamide and methotrexate in induction and consolidation; only high doses of methotrexate were used in the maintenance phase. Throughout therapy, which was planned for 54 weeks, intrathecal chemoprophylaxis using methotrexate, cytosine arabinoside, and hydrocortisone was coordinated with the high-dose methotrexate infusion therapy to provide CNS chemoprophylaxis that maintained therapeutic methotrexate spinal fluid levels (greater than 10(-6) mol/L) for approximately 60 hours. Twenty-two (92%) of the 24 children attained complete remission; two (8.3%) patients attained only partial remission, failing therapy. Two children died of infection while in complete remission; two children relapsed on therapy. Actual survival is 75%; the median follow-up time is 38+ months (range, 1 1/2+ to 84+ months). Relapses correlated with Murphy disease stage as follows: stage I--0/3, stage II- 2/7, stage III--2/10, and stage IV--0/2. Serious side effects and toxicities of chemotherapy occurred in ten patients (metabolic disturbances after rapid tumor lysis, two; infectious and/or febrile episodes following cyclophosphamide therapy, three; methotrexate side effects, four; and complications of intrathecal therapy, one). Results of this therapy are similar to those of the best regimens that have been reported. Treatment has been adapted for use in Burkitt's lymphoma by the Pediatric Oncology Group; the responsiveness of other B cell lymphomas of childhood to this treatment is also being determined. PMID- 3839011 TI - Membrane electrical properties and prediction of motor-unit type of medial gastrocnemius motoneurons in the cat. AB - Membrane electrical properties [time constant, action potential afterhyperpolarization (AHP), rheobase, input resistance, and axonal conduction velocity] were measured in motoneurons of cat medial gastrocnemius (MG) motor units. Motor units were classified on the basis of their mechanical responses as fast twitch, fast fatiguing (FF); fast twitch with intermediate fatigue resistance (FI); fast twitch, fatigue resistant (FR); or slow twitch, fatigue resistant (S; 11, 22). Motoneuron membrane time constant, estimated from the voltage response at the onset or termination of long (50-100 ms) current pulses and corrected for voltage-response nonlinearities (32), was found to differ significantly among the major motor-unit types, increasing in the order FF less than FR less than S. Afterhyperpolarization magnitude, half-decay time, and duration were all significantly greater for the fast (FF + FI + FR) versus the slow (S) motor units. The AHP half-decay time was correlated with muscle unit twitch time over the entire motoneuron population and within the type S motor unit population. There was no significant correlation between twitch time and AHP half-decay time among the types FF and FR motor-unit populations. In agreement with previous studies, we found a significant difference in both rheobase and input resistance among the major motor-unit types, with rheobase increasing in the order S less than FR less than FF and input resistance decreasing in that order (S greater than FR greater than FF). The differences in input resistance were present both before and after correcting for voltage-response nonlinearities (32). Also in agreement with previous studies, the mean axonal conduction velocity was significantly faster among the fast (FF + FI + and FR) compared with the slow (S) motor units. These data were used to examine the properties alone to determine motor-unit type, which has traditionally been defined on the basis of the muscle unit's mechanical properties (11, 22). We used a discriminant analysis program to classify 73 mechanically typed motor units for which we had measures of rheobase, input resistance, membrane time constant, and AHP half-decay time. This model was able to properly classify 71 of the 73 motor units of this data set, indicating that the motor units of this data set could be grouped into three categories representing the three major motor-unit types (FF, FR, and S) on the basis of their rheobase, input resistance, membrane time constant, and AHP half decay time.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3839012 TI - Correlation of stress with outcome of radioiodine therapy for Graves' disease. AB - Between November 1965 and December 1983, 293 patients were treated for Graves' disease using 131I. All patients were asked to identify a stressful event antedating the onset of overt clinical symptoms. Eighty-one patients were able to do this (27.6%). Six patients were lost to follow-up, the others were followed from 1 to 155 mo. Two hundred forty-four patients received a single treatment, 49 required two or more treatments. Stress and nonstress individuals were consistent with respect to age, sex, number of treatments and the dose of radioiodine. Patients with stress initiating the symptoms of Graves' disease became hypothyroid earlier, 50% at 12 mo compared with 36 mo for the nonstress group, p = 0.01. At 10 yr 5% of the stress group remained euthyroid compared with 17% nonstress. We conclude that stress in the 12 mo or less before the onset of clinical symptoms potentiates the development of hypothyroidism induced by a standard dose of radioiodine. PMID- 3839013 TI - Comparison of folate conjugase activities in human, pig, rat and monkey intestine. AB - Folate conjugase, an intestinal enzyme that hydrolyzes dietary polyglutamyl folate to the absorbable monoglutamyl derivative, is present in two locations in human jejunal mucosa: one on the brush border membrane, the other soluble and intracellar. Although the brush border enzyme has not been found in the rodent, a recent study demonstrated both brush border and intracellular folate conjugases in the pig with properties similar to the human enzymes. To confirm and expand these data, we compared folate conjugase activities in intestinal brush border and 30,000 X g supernatant fractions in human, pig, rat and monkey mucosa. In both the human and pig, brush border folate conjugase was active from pH 4.5 to 8.5, and activity was significantly increased by zinc acetate. In contrast, folate conjugase activity was negligible in rat and monkey mucosal brush borders. Intracellular folate conjugase was maximally active at pH 4.5 in the human, pig and monkey, whereas this enzyme was equally active from pH 4.0 to 7.5 in the rat. In each species, supernatant activity at pH 4.5 was completely inhibited by p hydroxymercuribenzoate. Although folate conjugase was quantitatively more active in the human than in the pig intestine, the brush border and intracellular enzymes exhibited similar properties. Sucrase, lactase and aminopeptidase activities were also similar in the two species. Our data show marked species differences in mucosal folate conjugase activities and indicate that the pig may be a suitable experimental animal for further studies of folate hydrolysis and absorption in humans. PMID- 3839014 TI - Hashimoto thyroiditis associated with thyroid cancer in adolescent patients. AB - Three girls had Hashimoto thyroiditis and thyroid cancer. Cervical exploration revealed a follicular carcinoma in one, an oxyphilic cell carcinoma in another, and a papillary carcinoma in the third. These cases add clinical and pathologic data to the previously debated concept that Hashimoto thyroiditis coexists with thyroid carcinoma. PMID- 3839015 TI - Prostanoids in hemolytic uremic syndrome. PMID- 3839016 TI - Use of laboratory data in freeze drying process design: heat and mass transfer coefficients and the computer simulation of freeze drying. PMID- 3839017 TI - Alveolar liquid lining: Langmuir method used to measure surface tension in bovine and canine lung extracts. AB - The Langmuir trough has been used to study monolayers of surfactant from beef lung extracts, dog lavage and the principal component (dipalmitoyl lecithin; DPL) in which surface tension has been simultaneously monitored on each film by the Wilhelmy method and the original Langmuir method whose readings are independent of contact angle. Readings on the Wilhelmy balance at 80% film compression reached the near-zero values recorded in previous studies, averaging 2.0 dyn cm 1, but Langmuir readings on the same films averaged 13.5 dyn cm-1 for DPL with no reading below 7.0 dyn cm-1. Similar differences were found for bovine extracts and dog lung lavage and have been attributed to a serious contact-angle artifact in the Wilhelmy method widely used in studying pulmonary surfactant. Higher minimum values of surface tension determined by the Langmuir method are shown to be incompatible with normal physiological function in the smaller mammals on the basis of the traditional bubble model of the alveolus. When Langmuir or Wilhelmy values are determined under more physiological conditions of area change, pH, temperature, humidity etc., values for surface tension are even higher and less compatible with the concept of a continuous liquid lining for the alveolar diameter of any mammal. PMID- 3839018 TI - Biochemical and clinical effects of treating the premenstrual syndrome with prostaglandin synthesis precursors. AB - The clinical and biochemical effects of a prostaglandin synthesis precursor (Efamol) containing linoleic acid and its metabolite, gamma-linolenic acid, were studied in 30 women with severe, incapacitating premenstrual syndrome. Efamol treatment alleviated the premenstrual symptoms in general and depression especially better than did a placebo. The capacity of platelets to release thromboxane B2 during spontaneous clotting was decreased in patients undergoing Efamol treatment (141 +/- 59 ng/ml, mean +/- SD) as compared to those undergoing placebo treatment (186 +/- 44 ng/ml, p less than 0.01) and control subjects (176 +/- 40 ng/ml, n = 25, p less than 0.05). No changes were found in plasma 6-keto prostaglandin F1alpha or in FSH, LH, prolactin, progesterone, estradiol and testosterone. The data suggest that prostaglandins might play a role in the pathophysiology of the premenstrual syndrome. PMID- 3839019 TI - Cyclosporin A in management of Graves' disease. PMID- 3839020 TI - Efficacy of ivermectin against gastrointestinal nematodes in cattle in South Africa. AB - The efficacy of ivermectin administered at 200 micrograms/kg was evaluated against induced infestations of 5 gastrointestinal nematode species in cattle. Results were analysed by the modified non-parametric method and a "A" class (more than 80% effective in more than 80% of the treated animals) was achieved with an oral drench and subcutaneous injection against the third and fourth larval and adult stages of Bunostomum phlebotomum, Cooperia spp. (C. pectinata and C. punctata), Haemonchus placei, Oesophagostomum radiatum and Ostertagia ostertagi. Ivermectin was 77,5-100% effective against naturally acquired infestations of Trichuris spp. PMID- 3839021 TI - Efficacy of ivermectin against ectoparasites of cattle in South Africa. AB - The efficacy of various formulations of ivermectin administered at the recommended dose rate of 200 micrograms/kg was evaluated in cattle infested with mange mites (Sarcoptes scabiei var. bovis.), lice (Linognathus vituli and Damalinia bovis) and ticks (Boophilus decoloratus, Amblyomma hebraeum, Rhipicephalus appendiculatus and Hyalomma spp.) in 8 trials conducted in South Africa. Mange mites (S. scabiei) were eliminated from animals treated subcutaneously, resulting in marked clinical recovery. Oral administration reduced the numbers of, but did not eliminate these mites. Sucking lice (L. vituli) were eliminated from animals treated orally or subcutaneously. Numbers of biting lice (D. bovis) were reduced but not eliminated, subcutaneous injection being more effective than oral drenching. Subcutaneous injection with ivermectin every 14 d over a period of 84 d significantly reduced numbers of engorged female R. appendiculatus and A. hebraeum. Numbers of Boophilus spp. and Hyalomma spp. were also reduced. A single subcutaneous injection resulted in significantly fewer engorged female B. decoloratus on treated animals for up to 28 d after treatment. In one trial significantly fewer A. hebraeum males occurred on treated animals for up to 28 d after treatment. Too few R. evertsi were present in these trials to evaluate the effect of ivermectin against this parasite. PMID- 3839022 TI - Structure of the black beetle virus genome and its functional implications. AB - The black beetle virus (BBV) is an isometric insect virus whose genome consists of two messenger-active RNA molecules encapsidated in a single virion. The nucleotide sequence of BBV RNA1 (3105 bases) has been determined, and this, together with the sequence of BBV RNA2 (1399 bases) provides the complete primary structure of the BBV genome. The RNA1 sequence encompasses a 5' non-coding region of 38 nucleotides, a coding region for a protein of predicted molecular weight 101,873 (protein A, implicated in viral RNA synthesis) and a 3' proximal region encoding RNA3 (389 bases), a subgenomic messenger RNA made in infected cells but not encapsidated into virions. The RNA3 sequence starts 16 bases inside the coding region of protein A and contains two overlapping open reading frames for proteins of molecular weight 10,760 and 11,633, one of which is believed to be protein B, made in BBV-infected cells. A limited homology exists between the sequences of RNA1 and RNA2. Sequence regions have been identified that provide energetically favorable bonding between RNA2 and RNA1 possibly to facilitate their common encapsidation, and between RNA2 and negative strand RNA1 possibly to regulate the production of RNA3. PMID- 3839023 TI - Solution conformation of proteinase inhibitor IIA from bull seminal plasma by 1H nuclear magnetic resonance and distance geometry. AB - A determination of the solution conformation of the proteinase inhibitor IIA from bull seminal plasma (BUSI IIA) is described. Two-dimensional nuclear Overhauser enhancement spectroscopy (NOESY) was used to obtain a list of 202 distance constraints between individually assigned hydrogen atoms of the polypeptide chain, to identify the positions of the three disulfide bridges, and to locate the single cis peptide bond. Supplementary geometric constraints were derived from the vicinal spin-spin couplings and the locations of certain hydrogen bonds, as determined by nuclear magnetic resonance (n.m.r.). Using a new distance geometry program (DISGEO) which is capable of computing all-atom structures for proteins the size of BUSI IIA, five conformers were computed from the NOE distance constraints alone, and another five were computed with the supplementary constraints included. Comparison of the different structures computed from the n.m.r. data among themselves and with the crystal structures of two homologous proteins shows that the global features of the conformation of BUSI IIA (i.e. the overall dimensions of the molecule and the threading of the polypeptide chain) were well-defined by the available n.m.r. data. In the Appendix, we describe a preliminary energy refinement of the structure, which showed that the constraints derived from the n.m.r. data are compatible with a low energy spatial structure. PMID- 3839024 TI - Xanthine oxidase as a source of free radical damage in myocardial ischemia. AB - Experiments were performed to determine if xanthine oxidase is a source of free radicals during myocardial ischemia. Open chest dogs were subjected to 1 h of total occlusion of the left anterior descending coronary artery followed by 4 h of reperfusion. Directly after coronary artery occlusion, Ce141 microspheres were injected into the left atrium to mark the ischemic bed. At the end of reperfusion, the hearts were removed and sectioned. Autoradiography determined the ischemic myocardium at risk, and the necrotic zone was determined by triphenyl-tetrazolium staining. Animals were divided into three groups: control, allopurinol (24-h oral pretreatment 400 mg, then 50 mg/kg IV bolus on occlusion); and superoxide dismutase starting with occlusion (15 000 U/kg). The size of the infarct as a percentage of the tissue at risk was: 23.1 +/- 4.1 for the control; 8.7 +/- 1.2 for the allopurinol group; and 5.4 +/- 1.2 for the superoxide dismutase group. The infarcts in the allopurinol and superoxide dismutase groups were significantly smaller than those in the control groups. In a second series of experiments we determined the xanthine oxidase/xanthine dehydrogenase content of dog myocardium. The left anterior descending branch was ligated for 30 min and then biopsies were removed from both the normal and the ischemic regions. Total enzyme content did not differ between the two regions averaging 0.259 U/g protein for the ischemic tissue and 0.225 U/g protein for the normal region. Only 9.8% of the enzyme was in the oxidase form in the normal region while 32.8% was in the oxidase form in the ischemic zone.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839025 TI - Diagnostic ultrastructural markers in alveolar cell carcinoma. AB - Two, difficult-to-diagnose cases of metastatic alveolar cell carcinoma were examined with the electron microscope. In the first case, the prominent feature was the occurrence of intranuclear tubular inclusions and the rare occurrence of surfactant-like material between tumour cells. Only after a prolonged search in sections from several blocks were typical neoplastic type II alveolar cells with secretory granules containing myelin figures (myelinosomes) found and the diagnosis of alveolar cell carcinoma established. In the second case, the tumour cells contained single-membrane-bound bodies enclosing material resembling pulmonary surfactant. Here also, after much searching, rare cells containing myelinosomes resembling those found in type II alveolar cells were found and the diagnosis of alveolar cell carcinoma established. The value of these various markers (myelinosomes, intranuclear tubular inclusions and surfactant-like material) in establishing the diagnosis of alveolar cell carcinoma with the electron microscope are reviewed and discussed. PMID- 3839026 TI - Efficacy and safety of the Nd:YAG laser in canine partial nephrectomy. AB - Partial nephrectomy using 100 watts of focused Neodymium: Yttrium Aluminum Garnet (Nd:YAG) laser power was evaluated to determine its hemostatic capabilities, safety, and effect on renal function and histology. Six adult female dogs ranging from 22 to 33 lbs. underwent nephrectomy and contralateral partial nephrectomy using the laser. Closure of the collecting system and drains were not used to determine if the laser could seal the collecting system. There was no blood loss with this technique. Four of the 6 dogs had no postoperative complications but two had urinary extravasation which led to death in one dog and required drainage in another. One month postoperative serum creatinine levels were 66 per cent higher than pre-operative values. Intravenous urograms revealed no evidence of dilation of the collecting system nor contrast extravasation. The depth of necrosis ranged from 4 mm. in the cortex to 7 mm. in the medulla. The data indicate that Nd:YAG laser partial nephrectomy is effective, and provides complete hemostasis, manageable urinary extravasation and acceptable impairment of renal function. PMID- 3839027 TI - [Antithrombin III and heparin cofactor II]. PMID- 3839028 TI - [TSH data analysis after thyroidectomy: processing of data with truncation of figures below the lower threshold]. PMID- 3839029 TI - Altered divalent ion metabolism in early renal failure: role of 1,25(OH)2D. AB - The present study evaluates the role of 1,25(OH)2D in the pathogenesis of abnormal mineral metabolism in patients with early renal failure (ERF). This was accomplished by examining the calcemic response to PTH and the handling of an oral phosphate load both before and after 6 weeks of therapy with 1,25(OH)2D. Twelve patients with ERF and six normal volunteers were studied. Patients with ERF as compared with normal subjects have low serum phosphate, low urinary calcium, low serum 1,25(OH)2D, and high plasma PTH and urinary cyclic AMP (cAMP). With EDTA infusion, an impaired calcemic response to PTH is observed in patients with ERF. The phosphate load test shows that these patients have an increased ability to excrete phosphate. After 1,25(OH)2D therapy a significant increase in serum phosphate, urinary calcium, and a decrease in urinary cAMP is observed only in ERF patients. In addition, the impaired calcemic response to PTH improves significantly, the renal handling of phosphate becomes normal, and the low baseline level of 1,25(OH)2D increases to normal. A significant correlation between levels of 1,25(OH)2D and creatinine clearance is observed in both patients and normals. In summary, the present data suggest that a mild deficiency of 1,25(OH)2D is present in ERF patients. The pathophysiological consequence of such a deficiency in patients with ERF may be important. PMID- 3839030 TI - [Equipment for microcomputer-controlled measurement in the evaluation of respiratory mechanical parameters in premature and newborn infants]. PMID- 3839031 TI - [Surgery of toxic goiter and ways of reducing postoperative hypothyroidism and goiter recurrence]. PMID- 3839032 TI - [Specificity of suprathreshold test methods in automated perimetry]. AB - The specificity of suprathreshold automated perimetry of the central visual field was investigated comparatively with the Fieldmaster Model 225 computer perimeter, utilizing five different test strategies. The clinical study comprised 30 eyes of 30 healthy subjects. The test strategies were: (1) threshold-related supraluminosity of 5 dB with constant supraluminosity between 0 degrees and 30 degrees eccentricity; (2) threshold-related supraluminosity of 5 dB, increasing the luminosity according to the sensitivity gradient of the retina at 15 degrees eccentricity; (3) threshold-related supraluminosity of 5 dB and stepwise increase of luminosity every 5 degrees of eccentricity; (4) threshold-related supraluminosity of 3 dB and stepwise increase of luminosity every 5 degrees of eccentricity; (5) central stimuli luminosity of 200 asb and stepwise increase of luminosity every 5 degrees of eccentricity. The highest specificity of the visual field examination was obtained with test strategy 3, followed by 5, 4 and 2. The lowest specificity was obtained with test strategy 1. PMID- 3839033 TI - [Vision test program for ophthalmologists on Apple II, IIe and IIc computers]. AB - A microcomputer program for the Apple II family of computers on a monochrome and a color screen is described. The program draws most of the tests used by ophthalmologists, and is offered as an alternative to a projector system. One advantage of the electronic generation of drawings is that true random orientation of Pflueger's E is possible. Tests are included for visual acuity (Pflueger's E, Landolt rings, numbers and children's drawings). Colored tests include a duochrome test, simple color vision tests, a fixation help with a musical background, a cobalt blue test and a Worth figure. In the astigmatic dial a mobile pointer helps to determine the axis. New tests can be programmed by the user and exchanged on disks among collageues. PMID- 3839034 TI - [Strabologic terminology II and computer coding]. AB - This paper begins with a discussion of a number of strabologic terms, such as the definition of squint and orthotropia, and criteria of cure. Congenital strabismus and dynamic and static angles of squint are also discussed. Finally, some problems of computer coding in strabismus are considered. PMID- 3839035 TI - The relation of growth performance to dietary oil source in African giant rat (Cricetomys gambianus Waterhouse). AB - An experiment is described in which palm-oil, groundnut oil, cottonseed oil and soybean oil were each fed as a 5% dietary supplement to the African giant rat (AGR). 4 AGR were fed each diet from 6-12 weeks of age. The groundnut oil-based diet supported the best liveweight gain of 4.23 g/day, while AGR fed the cottonseed oil diet lost an average weight of 1.42 g/day during the 6-week study. The efficiency of feed utilization was similar for AGR fed on palm-oil and soybean oil diets, but this was significantly (P less than 0.05) better than the 3.24 g feed/g gain obtained for AGR fed on groundnut oil diet. There was an abnormally low feed intake by AGR fed the cottonseed oil diet, and this probably resulted in their poorest performance. In terms of feed conversion efficiency, the results suggest that either palm-oil or soybean oil can be used in the diet of AGR. This observation is not in line with the practice whereby groundnut oil was used in the diet of albino rat. PMID- 3839036 TI - Intraosseous transducers for hearing by bone conduction. Peroperative measurements. AB - Now that it is possible to establish and maintain a reaction free skin penetration, there are new prospects for hearing through bone conduction. Peroperative hearing threshold measurements on patients entering hospital for ear surgery under local anaesthesia have been made. An electromagnetic transducer was temporarily cemented into the cortex of the mastoid process and the transducer current for threshold signals at different frequencies recorded. Considerable variability was found between patients but a distinct common pattern from 0.25 kHz to 8 kHz could be identified in the audiograms. With the transducers used, the power consumption was found to be low (1 mW) at threshold levels but to achieve a comfortable hearing level the electrical power needed was found to be as high as 4W. PMID- 3839037 TI - Microprocessor controlled arthrograph. AB - This new arthrograph, based on a microcomputer, provides displacements of variable amplitude, frequency and waveform. It is sufficiently small for use on a ward or in a clinic, is simple to use and is readily accepted by patients. One test and its associated analysis, together with printed and plotted results, occupies little more than two minutes. PMID- 3839038 TI - A simple hidden line removal algorithm for serial section reconstruction. AB - A simple and efficient program for removing the hidden lines from the computer graphics display of a three-dimensional structure has been developed. The algorithm is optimized for serial section reconstruction, that is, for three dimensional structures composed of a series of stacked planar outlines. Using the algorithm, an anatomist can generate a realistic static picture of a reasonably complex reconstruction in about 20 s on a small laboratory computer. PMID- 3839039 TI - [Treatment of pain in cancer patients with intrathecal morphine]. PMID- 3839041 TI - [Potentiation of the radiosensitizing effect of metronidazole using whole-body drug-induced hyperthermia]. AB - The total drug hyperthermia in the presence of metronidazole administration improves radiotherapeutic results in Pliss lymphosarcoma: tumor growth inhibition increases by 12.7-18.5%, tumor regression by 30.6-38.9%. A dose of 100 mg/kg of metronidazole combined with irradiation in the presence of moderate hyperthermia produces even a more noticeable radiosensitizing effect than a dose of 700 mg/kg without hyperthermia. A possibility of quite a high level of tumor radiosensitization with lower doses of metronidazole without toxic manifestations of the body was shown. PMID- 3839040 TI - Polysomnography and associated physiological parameters management using a microcomputer in offline processing: application to male impotence. PMID- 3839042 TI - [Accumulation of metronidazole in tumors during whole-body hyperthermia induced by Sulfazin]. AB - A study was made of metronidazole accumulation in the blood of animals and tumorous tissues of Pliss lymphosarcoma after the total moderate hyperthermia caused by subcutaneous injection of the pyrogenic drug sulfadiazine. Metronidazole concentration in the blood and tumors of hyperthermized animals was 2-3 times as high as in those of the control animals. A time shift of the maximum values of metronidazole accumulation occurred in hyperthermia. Under normal conditions the peak of accumulation was observed 2 h after the administration of the radiosensitizer whereas in hyperthermia depending on its duration it could develop 1 h earlier. Thus the total moderate hyperthermia served as a favorable background for raising metronidazole concentration in tumor opening up prospects for potentiating the radiosensitizing effect of metronidazole and perhaps some other means in the utilization of small nontoxic doses of the drug. PMID- 3839043 TI - Analysis of maximum expiratory flow volume curves using canonical correlation analysis. PMID- 3839044 TI - Cochlear implants. PMID- 3839045 TI - Microinjection of Micrococcus luteus UV-endonuclease restores UV-induced unscheduled DNA synthesis in cells of 9 xeroderma pigmentosum complementation groups. AB - The UV-induced unscheduled DNA synthesis (UDS) in cultured cells of excision deficient xeroderma pigmentosum (XP) complementation groups A through I was assayed after injection of Micrococcus luteus UV-endonuclease using glass microneedles. In all complementation groups a restoration of the UV-induced UDS, in some cells to the repair-proficient human level, was observed. Another prokaryotic DNA-repair enzyme, T4 endonuclease V, restored the UV-induced UDS in a similar way after microinjection into XP cells. Since both enzymes specifically catalyse only the incision of UV-irradiated DNA, we conclude that this activity is impaired in cells of all 9 excision-deficient XP complementation groups tested. PMID- 3839046 TI - Case 6-1985: progressive pneumonitis after chemotherapy for breast cancer. PMID- 3839047 TI - Effects on transmembrane action potential, slow inward current and force of contraction in ventricular cardiac muscle of BRL 31660, a new antiarrhythmic drug with class I and class IV activity. AB - The effects of 1-30 mumol l-1 BRL 31660 on transmembrane action potential and force of contraction were investigated in guinea-pig electrically driven papillary muscles. Lidocaine was studied for comparison. BRL 31660 depressed Vmax of the action potential without changing the resting potential, decreased the force of contraction and decreased the action potential duration. Similar effects were obtained with lidocaine. BRL 31660 inhibited the recovery of Vmax from inactivation, the time constant of which was estimated to be about 1,100 ms in the presence of 10 mumol l-1 BRL 31660. The depressive effect on Vmax was particularly pronounced at low (less negative) membrane potentials. BRL 31660 can thus be classified as a class I antiarrhythmic agent of the lidocaine type. Additional voltage-clamp experiments in cow ventricular trabeculae provided evidence that BRL 31660 also depressed the slow inward current at concentrations similar to those producing the effects on the transmembrane action potential. BRL 31660 thus exerted an additional class IV action. This effect was not shared by lidocaine. It is concluded that BRL 31660 is a new antiarrhythmic agent which depresses both the fast and slow inward current at similar concentrations. The dual effects of BRL 31660 conceivably contribute to its antiarrhythmic activity, but the clinical relevance of these results remains to be elucidated. PMID- 3839049 TI - Does long-term calcitriol therapy in dialyzed patients turn 'hyperparathyroid' into 'osteomalacic' problem? PMID- 3839048 TI - [Multiple sclerosis and Basedow disease, a more than coincidental association?]. AB - Two young women with Graves' disease and marked exophthalmus developed cervical myelitis. Besides showing similar clinical symptoms, both were found to be HLA type DR 4. The possibility of a significant association of autoimmune diseases of the thyroid and the CNS is discussed. PMID- 3839051 TI - Deltamethrin infusion into different sites in the neuraxis of freely-moving rats. AB - A comparison of signs induced by deltamethrin infusion at 3 sites within the neuraxis was made in freely-moving rats. Cannulae were placed prior to experiment into either lateral ventricle, cisterna magna or spinal subarachnoid space and animals allowed to recover. Deltamethrin was active at all levels of the neuraxis in a dose dependent manner. All signs induced by intraperitoneal deltamethrin administration, except profuse salivation and choreoathetosis, were generated by direct infusion of the compound into the CNS. In addition other signs developed which cannot be observed following systemic administration. They seemed to reflect a local disturbance in function around each injection site. With regard to the major symptom of choreoathetosis associated with systemic deltamethrin administration, the results suggest that for such a complex response to develop, a more global activation at many levels of the neuraxis (and possibly in the periphery) is required. PMID- 3839050 TI - Effect of a new antithrombotic agent (defibrotide) in acute renal failure due to thrombotic microangiopathy. AB - 8 patients with thrombotic microangiopathy were treated with a new antithrombotic agent, defibrotide. This drug displays considerable fibrinolytic and antithrombotic activity, and induces generation and release of a prostacyclin like substance from vascular tissue. At admission all patients presented severe renal involvement and coagulation abnormalities. Neurological manifestations were present in 6. Defibrotide administration was followed by recovery of renal function in 6, disappearance of neurological symptoms and coagulation abnormalities in all patients. The use of defibrotide was not associated with side effects. On the basis of the results obtained in these patients, we suggest that defibrotide might be considered as a valuable drug in the management of patients with thrombotic microangiopathy. PMID- 3839052 TI - Automated measurement of multivariate locomotor behavior in rodents. AB - Most automated methods of monitoring locomotion in animals have used mechanical equipment which measure only one dependent variable and are quite susceptible to a variety of experimental errors. Computer technology has advanced the mechanical means of measuring locomotor activity, allowing a new capability for simultaneously recording many aspects of locomotion. For example, the Digiscan System measures over 20 different indices of ambulatory, rearing, stereotypical and rotational behaviors over real time. Although standardization of some of these techniques is still needed, the computerized approach has already proven itself of value in neurobehavioral research. This paper describes the use of commercial systems in research. PMID- 3839053 TI - The effects of selective opioid delta-receptor antagonists on stress-induced antinociception and plasma corticosterone levels in mice. AB - Antinociception produced in mice by a 3 min swim was attenuated by ICI 174,864 and by low doses of naloxone indicating the involvement of both delta- and mu receptors. The degree of antinociception was not related to plasma corticosterone (CS) levels measured 11 min after the swim. Naloxone affected CS levels in control mice and appeared to reduce the CS response to stress: ICI 154,129 and ICI 174,864 did not produce consistent effects on plasma CS levels. PMID- 3839054 TI - Proenkephalin- and prodynorphin- derived opioid peptides in guinea-pig heart. AB - Consecutive high performance liquid chromatography (HPLC) fractionation and the mouse vas deferens assay were used to characterize opioid peptides in the guinea pig heart. Atria were found to contain at least nine different opioid peptides derived from proenkephalin and prodynorphin. In ventricles at least seven different molecular species which may be derived only from prodynorphin were present. The total opioid activity in atria averaged 22 pmol and in ventricles 11 pmol [Met]enkephalin equivalents per g wet wt. The high content of [Leu]enkephalin in relation to [Met]enkephalin indicates the possibility of a dynorphinergic pathway of cardiac [Leu]enkephalin. Multiple cardiac opioid ligands and receptors, including kappa, may be functionally important in the peripheral control of cardiac performance and coronary circulation. PMID- 3839055 TI - Leumorphin in human brain. AB - Porcine leumorphin, a putative opioid peptide corresponding to amino acid residues 228-256 of preproenkephalin B has been demonstrated to exist in the porcine neurointermediate pituitary. A recent study on the sequence analysis of genomic DNA of human preproenkephalin B has shown that human leumorphin differs in 3 amino acid residues from porcine leumorphin. In order to clarify whether leumorphin is an endogenous opioid peptide in man, we have studied its existence and regional distribution in the human brain using a radioimmunoassay (RIA) for leumorphin. Reverse-phase HPLC and high performance gel permeation chromatography coupled with the RIA for leumorphin revealed that human leumorphin existed together with rimorphin (dynorphin B) in water extracts of the human brain. Leumorphin-like immunoreactivity (-LI) and dynorphin-LI distributed in parallel throughout the brain. These results indicate that leumorphin is a novel endogenous opioid peptide in man. PMID- 3839056 TI - Kelatorphan: a full inhibitor of enkephalin degrading enzymes. Biochemical and pharmacological properties, regional distribution of enkephalinase in rat brain by use of a tritiated derivative. AB - New potent inhibitors of enkephalin degrading enzymes were obtained by synthesis of compounds bearing a bidentate group. Among these bidentates, Kelatorphan, N [(R)-3-(N-hydroxy)-carboxamido-2-benzylpropanoyl]-L-alanine, is in vitro a full inhibitor of enkephalinase, dipeptidylaminopeptidase and aminopeptidase. In vivo Kelatorphan (i.c.v. administered in mice) prevents exogenous enkephalin from peptidase degradation. The analgesic effect of Kelatorphan is at least equal to that of the association of bestatin and thiorphan. An analogue of Kelatorphan was tritiated and was used as a specific marker of enkephalinase. Thus the distribution of enkephalinase in rat brain was studied: striatum corpus and substantia nigra were particularly labelled. PMID- 3839057 TI - Release of synenkephalin from neuronal terminals in vitro. AB - Synenkephalin, the amino-terminal 1-70 residues of proenkephalin is released intact from bovine globus pallidus following potassium-induced depolarization in vitro via a Ca++ dependent mechanism. The release of synenkephalin accompanies that of Met-enkephalin in a molar ratio of 1/4. In contrast to Met-enkephalin which is readily destroyed when released, synenkephalin is not destroyed. PMID- 3839058 TI - Presence of the predicted C-flanking peptide of neuropeptide Y (CPON) in tissue extracts. AB - Isolation of the DNA sequence encoding neuropeptide Y (NPY) has suggested the presence of a precursor peptide consisting of 97 aminoacids. Three peptide products have been predicted from this precursor; an N terminal signal peptide, neuropeptide Y and a C terminal 30 amino acid flanking peptide. This study has demonstrated by a novel radioimmunoassay that this C-flanking peptide for NPY occurs naturally in tissues. The peptide is present in abundance throughout the central nervous system and qualitatively in both the brain and peripheral structures, it has the same distribution as NPY. Chromatographic analysis demonstrated that the measured CPON-immunoreactivity elutes in the position of the peptide synthesised according to the predicted sequence. PMID- 3839059 TI - [Primary gastric lymphoma]. PMID- 3839060 TI - Vitamin D action. PMID- 3839061 TI - Prolactin secretion during pregnancy and puerperium: response to metoclopramide and interactions with placental hormones. AB - Prolactin (PRL) response to an intravenous administration of metoclopramide (10 mg) was examined during normal pregnancy and puerperium. Basal PRL and the metoclopramide-induced increase of PRL increased gradually during pregnancy. This was paralleled by serum estradiol, estriol, and progesterone levels. A positive correlation between serum progesterone and metoclopramide-induced PRL concentrations was found at week 36 of pregnancy. In lactating women, metoclopramide always induced higher increases of PRL than did suckling stimulation on the seventh day postpartum. The PRL responses to suckling and metoclopramide were significantly correlated with each other, but no correlation was found between placental steroid levels throughout pregnancy, PRL levels after parturition, and total milk production during seven days postpartum. PMID- 3839062 TI - Problems associated with epidural anesthesia in obstetrics. AB - Toxic reactions to bupivacaine and 2-chloroprocaine recently have been reported in parturients receiving epidural analgesia. Neurotoxicity has occurred after the accidental subarachnoid injection of large doses of 2-chloroprocaine. Cardiac arrest and death have occurred after the accidental intravascular injection of bupivacaine. Obstetricians should be aware of these hazards and how to avoid them by the use of proper technique. PMID- 3839063 TI - Automation and integration of health information systems. PMID- 3839064 TI - Chronic retinopathy of prematurity. AB - A pathologic analysis of 40 autopsy cases of chronic retinopathy of prematurity is presented. The type of retinal detachment in chronic retinopathy is unique, resulting from progressive changes in the peripheral retina: folding at the site of extraretinal vasoproliferation; scroll-like rolling anteriorly towards the lens; foreshortening of entire retina with detachment; and closure of the retinal "funnel." The biomechanical intraretinal and extraretinal factors operating during this process are discussed. Also presented are some interesting atypical features found in this series: arrested retinopathy; "sea fan" extraretinal vascular fronds; retinopathy in anencephaly; cribriform vanguard; and extramedullary erythropoiesis. PMID- 3839065 TI - The biomechanics and function of the secondary restraints to the anterior cruciate ligament. AB - The primary function of the anterior cruciate ligament has been described as one of restraining anterior motion of the tibia. The passive structures that offer secondary support for the anterior cruciate ligament are the collateral ligaments, the mid-third capsular ligaments, the menisci, and the iliotibial band. In this article, the biomechanics and function of these structures, as well as their effectiveness in providing back-up support for the anterior cruciate ligament, are discussed. PMID- 3839066 TI - Acute knee injuries in athletes. PMID- 3839067 TI - Knee injuries in skiing. PMID- 3839068 TI - Characteristics of human surfactant-associated glycoproteins A. AB - Surfactant-associated glycoprotein A [molecular weight (Mr) = 34,000, isoelectric point (pI) 4.6-5.0] and its sulfhydryl dependent oligomers were purified and partially characterized from surfactant obtained from human alveolar lavage. Two major forms of the protein were identified by silver stain and immunoblot analysis of surfactant using human surfactant-associated glycoprotein A antisera: glycoprotein A2, Mr = 34,000 and glycoprotein A1, Mr = 28,000. The larger form was reduced to Mr = 28,000 by treatment with endoglycosidase F, indicating the presence of complex N-linked oligosaccharide on the molecule. Charge heterogeneity was decreased and the isoelectric point increased by treatment with neuroaminidase, supporting the presence of sialic acid. Homology between the proteins Mr = 34,000 and 28,000 was confirmed by analysis of two-dimensional tryptic and chymotryptic peptides of 125I-iodo-glycoproteins A1 and A2 which were identical. The protein was very rich in glycine and its amino acid composition was similar to that of glycoprotein A previously reported for the dog and rat. Treatment of glycoproteins A with bacterial collagenase resulted in the generation of highly glycosylated peptides Mr = 20,000-22,000, pI 4.6-5.0, which no longer formed sulfhydryl-dependent oligomers, supporting the presence of significant collagen-like region in the molecule. In the absence of reducing agents, glycoprotein A from surfactant was present as sulfhydryl-dependent dimers and larger oligomers. Higher molecular weight aggregates of glycoproteins A were also present in lavage material even after sulfhydryl reduction. Glycoproteins A were identified in surfactant from amniotic fluid, normal adult lung lavage, human cadaver lung lavage, and material obtained from lung lavage from a patient with alveolar proteinosis.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839069 TI - Vitamin E and retinopathy of prematurity revisited. PMID- 3839070 TI - Gene for OTC: characterisation and linkage to Duchenne muscular dystrophy. AB - Cloned coding sequences for rat and human ornithine transcarbamylase (OTC) were obtained by screening a rat and a human cDNA library respectively with a synthetic oligonucleotide corresponding to 27 bases of the rat sequence. These clones, 1100 bp long for the rat clone and 1300 bp for the human, contain approximately 80% of the human OTC coding sequence. The OTC mRNA length determined by Northern blot analysis is 1700bp. The human OTC sequence was shown to be localised Xp11.4-Xp21 using somatic cell hybrids. There is a frequent RFLP revealed with the restriction enzyme MspI. OTC is located more closely to the Duchenne muscular dystrophy mutation than previously reported markers such as RC8 and L1.28, and therefore should prove useful in carrier detection and haplotype analysis of families carrying the mutation causing the disease. PMID- 3839071 TI - A method to locate protein coding sequences in DNA of prokaryotic systems. AB - cDNA sequence data from E. coli phages, for which complete genome sequences are known, have been analysed, From this analysis thirteen triplets have been identified as markers to distinguish protein-coding frames from fortuitous open reading frames. The region of -18 to +18 nucleotides around ATG/GTG, has been analysed and used to identify initiator codons from internal ATG/GTG. With the aid of criteria defined above a method has been developed to locate protein coding sequences by a combination of 'gene search by signal' and 'gene search by content' approaches. Application of this method to prokaryotic systems including those which were not part of our data base indicates that it is quite accurate and general in nature. PMID- 3839072 TI - Structural features and restricted expression of a human alpha-tubulin gene. AB - The nucleotide sequence of a human alpha-tubulin gene (b alpha 1) is described. This gene is extensively homologous to a rat alpha-tubulin gene in its coding regions, 3'-untranslated region and, indeed, in segments of its largest intron. However, with the exception of three short conserved blocks of homology, the 5' flanking regions of the rat and human genes are unrelated. Hence, these genes each encoding an identical protein are transcribed under the influence of divergent promoters. Blot analyses using RNA from a variety of transformed cells derived from different tissues indicate that expression of the human alpha tubulin gene is restricted to cells of neurological origin. Among neurological cell types b alpha 1 expression is further restricted to adherent cells that are morphologically differentiated. The data presented suggest that the b alpha 1 gene encodes a prominent neuronal and glial alpha-tubulin and that b alpha 1 expression is a function of the differentiated state of these cells. PMID- 3839074 TI - Effect of the tripartite leader on synthesis of a non-viral protein in an adenovirus 5 recombinant. AB - The EIa region of an Adenovirus 5 recombinant has been substituted by a modular gene encoding dihydrofolate reductase (DHFR). In this recombinant, the mouse DHFR cDNA was positioned behind sequences of the major late promoter and the complete tripartite leader. The leader sequences end in the normal 5' splice site (SS) of the third leader, so that RNA splicing joins the tripartite leader to a 3' splice site immediately upstream of the DHFR cDNA. At late stages of infection, high levels of DHFR mRNAs were synthesized. At early times in the late stage, this mRNA was efficiently translated; however, at later times translation of DHFR decreased probably due to poor competition with other late mRNAs. Synthesis of DHFR protein from an analogous Adenovirus 5 recombinant containing only the first late leader was studied in parallel. Equivalent levels of DHFR mRNA were expressed after infection with this recombinant virus; however, the efficiency of DHFR translation was at least 20 fold lower than that of the DHFR mRNA containing the tripartite leader. This suggests that the tripartite leader sequence is important for translation in the late stage of infection. As reported previously, the Ad5 recombinant containing only the first leader vastly overexpresses polypeptide IX from a novel mRNA, formed by the splicing of the first leader in the modular DHFR gene to the 3' splice site in the EIb region. Cells infected with this recombinant synthesize very little normal mRNA from the EIb region. Here, we demonstrated that coinfection of 293 cells with this recombinant and wild type Adenovirus 5 also results in decreased EIb mRNA synthesis. We propose that the overproduction of polypeptide IX suppresses mRNA expression from the EIb and IX promoter sites, probably by an autoregulation loop active during lytic growth. PMID- 3839073 TI - Primary structure of the soybean nodulin-23 gene and potential regulatory elements in the 5'-flanking regions of nodulin and leghemoglobin genes. AB - The nodulin-23 gene of soybean is one of the most abundantly transcribed genes induced during symbiosis with Rhizobium. Using a plasmid (pNod25) from a nodule cDNA library, we have isolated the nodulin-23 gene from a soybean genomic library. Nucleotide sequence analysis of the cDNA and of the genomic clone indicated that the coding region of this gene is 669 bp long and is interrupted by a single intron of about 530 bp. The deduced protein sequence suggests that nodulin-23 may have a signal sequence. The 5'-flanking sequence of two other nodulin genes, nodulin-24 encoding for a membrane polypeptide and one of the leghemoglobin genes (LbC3), were obtained. Comparison of these sequences revealed three conserved regions, one of which, an octanucleotide (GTTTCCCT), has 100% homology. The conserved sequences are arranged in a unique fashion and have a spatial organization with respect to order and position, which may suggest a potential regulatory role in controlling the expression of nodulin and leghemoglobin genes during symbiosis. PMID- 3839075 TI - A cDNA clone for the precursor of rat mitochondrial ornithine transcarbamylase: comparison of rat and human leader sequences and conservation of catalytic sites. AB - We have cloned a DNA complementary to the messenger RNA encoding the precursor of ornithine transcarbamylase from rat liver. This complementary DNA contains the entire protein coding region of 1062 nucleotides and 86 nucleotides of 5'- and 298 nucleotides of 3'-untranslated sequences. The predicted amino acid sequence has been confirmed by extensive protein sequence data. The mature rat enzyme contains the same number of amino acid residues (322) as the human enzyme and their amino acid sequences are 93% homologous. The rat and human amino-terminal leader sequences of 32 amino acids, on the other hand, are only 69% homologous. The rat leader contains no acidic and seven basic residues compared to four basic residues found in the human leader. There is complete sequence homology (residues 58-62) among the ornithine and aspartate transcarbamylases from E. coli and the rat and human ornithine transcarbamylases at the carbamyl phosphate binding site. Finally, a cysteine containing hexapeptide (residues 268-273), the putative ornithine binding site in Streptococcus faecalis, Streptococcus faecium, and bovine transcarbamylases, is completely conserved among the two E. coli and the two mammalian transcarbamylases. PMID- 3839076 TI - Nucleic acid (cDNA) and amino acid sequences of the maize endosperm protein glutelin-2. AB - The cDNA coding for a glutelin-2 protein from maize endosperm has been cloned and the complete amino acid sequence of the protein derived for the first time. An immature maize endosperm cDNA bank was screened for the expression of a beta lactamase:glutelin-2 (G2) fusion polypeptide by using antibodies against the purified 28 kd G2 protein. A clone corresponding to the 28 kd G2 protein was sequenced and the primary structure of this protein was derived. Five regions can be defined in the protein sequence: an 11 residue N-terminal part, a repeated region formed by eight units of the sequence Pro-Pro-Pro-Val-His-Leu, an alternating Pro-X stretch 21 residues long, a Cys rich domain and a C-terminal part rich in Gln. The protein sequence is preceded by 19 residues which have the characteristics of the signal peptide found in secreted proteins. Unlike zeins, the main maize storage proteins, 28 kd glutelin-2 has several homologous sequences in common with other cereal storage proteins. PMID- 3839077 TI - Molecular cloning and nucleotide sequence of rat lingual lipase cDNA. AB - Purified rat lingual lipase (EC3113), a glycoprotein of approximate molecular weight 52,000, was used to generate polyclonal antibodies which were able to recognise the denatured and deglycosylated enzyme. These immunoglobulins were used to screen a cDNA library prepared from mRNA isolated from the serous glands of rat tongue cloned in E. coli expression vectors. An almost full length cDNA clone was isolated and the nucleotide and predicted amino acid sequence obtained. Comparison with the N-terminal amino acid sequence of the purified enzyme confirmed the identity of the cDNA and indicated that there was a hydrophobic signal sequence of 18 residues. The amino acid sequence of mature rat lingual lipase consists of 377 residues and shares little homology with porcine pancreatic lipase apart from a short region containing a serine residue at an analogous position to the ser 152 of the porcine enzyme. PMID- 3839078 TI - Use of tamoxifen in breast cancer. PMID- 3839079 TI - Plasma calcium, phosphorus, 25-dihydroxyvitamin D3, and 1-25-dihydroxyvitamin D3 of hens with fatty liver syndrome. AB - Plasma was obtained from normal laying hens, 30 weeks of age, and from laying hens, 60 weeks of age, with fatty liver syndrome (FLS). The 60-week-old hens were divided into two groups based on whether they were laying or nonlaying. Plasma phosphorus and calcium was significantly higher for hens with FLS. The younger hens had significantly lower 25-dihydroxyvitamin D3 (25-OH-D3) plasma levels than the older hens. The older hens that were laying had significantly lower 25-OH-D3 plasma levels than the nonlaying hens. Old nonlaying hens with FLS had lower 1, 25-OH-D3 than young hens or old laying hens with FLS; however, the levels were not different for the two groups of laying hens. PMID- 3839080 TI - Route-dependent different relations between acute and subacute toxicity of the potential antiviral agent benzoxazolyl-2-formyl-S-ethyl-isothiosemicarbazone in mice. PMID- 3839081 TI - Acid-base disorders--a computer simulation. PMID- 3839082 TI - Microcomputerized measurement of the circadian locomotor rhythm in microorganisms. AB - A computerized close-up video/photoamplifier system was implemented for the study of circadian locomotor rhythm in a population of a ciliate protozoan, Paramecium. This fully microcomputerized system facilitated automatic long-term measurement of three parameters in parallel: (1) numbers of specimens per 10 min traversing beneath a fixed point in an experimental vessel, (2) times taken by specimens to traverse the point, and (3) interval times between subsequent specimens traversing the point. Stochastic analyses using these parameters can derive the circadian fluctuation of physiological variables, such as swimming speed and the frequency of avoiding reaction (abrupt change in swimming direction). The computerized system simultaneously accomplished the acquisition of these three sets of data, their transient storage, and their graphic display according to given format. The system software was constituted so that an experimenter with little computer knowledge, could easily operate the system by answering questions displayed on the computer monitor. PMID- 3839083 TI - [Computers in radiology. Adjustment to new competitive situations through use of computers with user-specific software]. AB - With this publication, the author presents the requirements that a user specific software should fulfill to reach an effective practice rationalisation through computer usage and the hardware configuration necessary as basic equipment. This should make it more difficult in the future for sales representatives to sell radiologists unusable computer systems. Furthermore, questions shall be answered that were asked by computer interested radiologists during the system presentation. On the one hand there still exists a prejudice against programmes of standard texts and on the other side undefined fears, that handling a computer is to difficult and that one has to learn a computer language first to be able to work with computers. Finally, it is pointed out, the real competitive advantages can be obtained through computer usage. PMID- 3839084 TI - The concentrations of 6-keto-PGF1 alpha and TXB2 in plasma samples from patients with benign and malignant tumours of the breast. AB - Peripheral plasma concentrations of 6-keto-PGF1 alpha and TXB2 were measured in patients with benign and malignant tumours of the breast, in patients with non gynecological diseases, and in healthy female controls. The values were significantly higher in female patients with malignant tumours of the breast than in healthy controls (146 +/- 28 vs 13 +/- 2.5 pg/ml for 6-keto-PGF1 alpha p less than 0.01 and 78 +/- 17 vs 11 +/- 2 pg/ml for TXB2, p less than 0.01). Benign tumours of the breast were also associated with significantly raised plasma levels of 6-keto-PGF1 alpha and TXB2 compared to normal controls (52 +/- 5 vs 13 +/- 2.5 pg/ml for 6-keto-PGF1 alpha, p less than 0.01 and 26 +/- 5 vs 11 +/- 2 pg/ml for TXB2, p less than 0.05). The high levels of 6-keto-PGF1 alpha and TXB2 were not found to be correlated with clinical and histopathological data. The surgical removal of the primary tumour has apparently no effect on the plasma concentrations of 6-keto-PGF1 alpha and TXB2 over a follow-up period of 9 days after operation. The lack of alterations in the ratio of TXB2:6-keto-PGF1 alpha in the cancer patients and other subjects studied before and after surgery is indicative of the regulatory power of metabolic systems to preserve the homeostatic balance. PMID- 3839085 TI - Differential effects of various vasoactive drugs on basal and stimulated levels of TXB2 and 6-keto-PGF1 alpha in rat brain. AB - Thromboxane B2 and 6-keto-PGF1 alpha (6KPGF1 alpha), the major stable metabolites of thromboxane and prostacyclin, are present in the CNS, where they appear to be mainly produced within and/or acting upon the vascular district. Their concentrations are of few pg/mg protein in rat brain cortex of animals sacrificed by microwave (MW) radiation, procedure which inactivates tissue enzymes and allows the determination of endogenous "basal" levels of eicosanoids. Levels of 6KPGF1 alpha and especially those of TxB2 increase several fold over the basal values in brain cortex of animals sacrificed by decapitation followed by a few minute interval before analysis (post-decapitation ischemia, PDI). Pretreatment of animals with the vasoactive drug papaverine, resulted in elevation of brain basal levels of 6KPGF1 alpha and with the carbochromene derivative AD6 in reduction of basal levels of TxB2, whereas the calcium antagonist nifedipine and dipyridamole did not modify basal levels of the two eicosanoids. Treatments with papaverine and AD6 reduced the accumulation of TxB2 and enhanced that of 6KPGF1 alpha occurring after PDI, to different extents, both resulting, however, in reduction of the TxB2/6KPGF1 alpha ratio. Nifedipine instead, decreased the release of both eicosanoids and resulted in elevation of the TxB2/6KPGF1 alpha ratio, whereas dipyridamole had no effect. In conclusion, the evaluation of the overall effects of drug treatments on the TxB2/6KPGF1 alpha ratio in cerebral tissue, provided useful informations on the pharmacological modulation of vascular eicosanoids in this district. PMID- 3839087 TI - [Primary lymphoma of the central nervous system]. PMID- 3839086 TI - Cardiovascular responses to intrathecal administration of arginine vasopressin in rats. AB - Arginine vasopressin (AVP) has been localized in numerous extrahypothalamic brain regions and in the spinal cord. The results of intracerebroventricular AVP injections and microinjection of AVP into the brain stem suggest that this peptide, acting centrally at higher levels, may influence cardiovascular function. No function for the AVP occurring at spinal levels has been reported. In this study we report that AVP, in picomole quantities, increased arterial blood pressure and integrated heart rate in a dose-dependent manner following intrathecal application to the thoracic region in the rat. This response was not blocked by intravenous administration of the AVP antagonist d(CH2)5-D-Tyr-VAVP. These results suggest that AVP, acting within the spinal cord, may alter neural outflow regulating blood pressure and heart rate. PMID- 3839088 TI - [The hypothalamo-hypophyseo-thyroid system in relatives of patients with diffuse toxic goiter]. PMID- 3839090 TI - Morphological features of the interaction between mucus and surfactant on the bronchial mucosa. AB - The secretion layer over the bronchial epithelium was investigated on human biopsy material. In the sol phase of the secretion, phospholipid membranes stretched out or arranged in vesicular structures could regularly be demonstrated. They displayed the same structure as the surfactant material in the alveolar space. It can be inferred therefrom that the surfactant is excreted via the bronchial system. It probably contributes to the stabilization of the sol phase of the mucus and thus influences the sliding capacity of the gel phase. So the surfactant has an important function in maintaining mucociliary clearance at the bronchial mucosa. PMID- 3839089 TI - Ultrastructural changes of the pulmonary parenchyma after experimentally induced endotoxic shock in dogs with and without drug protection. AB - The authors describe the ultrastructural alterations of the pulmonary parenchyma produced in dogs by endotoxic shock, and they examine the effects that a 'secretolytic' drug (bromexine) has in modifying those changes. In the animals under shock there is a complete breakdown of the normal structure of the pulmonary parenchyma. According to the authors, these lesions are caused by the damage of the lining layer and of the cells which produce the constituents of the surfactant system. In dogs under shock and treated with bromexine the authors have seen a better organization of the pulmonary parenchyma: the cellular limits of the pneumocytes of types I and II were more clearly defined and the osmiophilic bodies were increased both in number and volume. The authors conclude that the damage of the lining layer and of the pneumocytes of type II plays an important role in the development of the ARDS and they say that bromexine can improve clinical and morphological aspects of that syndrome. PMID- 3839091 TI - [Evaluation and perspectives of a new cephalosporin: ceftriaxone]. AB - Following a brief review of the main bacteriological and pharmacokinetic properties of ceftriaxone, the authors present a therapeutic evaluation of this new cephalosporin antibiotic. The effects of ceftriaxone in severe infections, such as septicaemia, bacterial meningitis, urinary tract infections, typhoid, bone infections and sexually transmitted diseases, are described on the basis of recent publications. Mention is also made of the adverse reactions to, and benign side-effects of the drug. Finally, the advantages of ceftriaxone in the treatment of some infections are envisaged: the single daily dose and short therapeutic courses may modify therapeutic habits and exert a beneficial effect on costs in some cases. PMID- 3839092 TI - Diurnal course of the suitability of serum samples obtained from normal subjects and from patients with primary endogenous hypertriglyceridaemia to serve as substrate for milk lipoprotein lipase. AB - Serum samples, obtained at various times of the day from four normal subjects and five patients with primary endogenous hypertriglyceridaemia on a carbohydrate rich diet (meals at 09.00, 13.00 and 17.00 h), were incubated with cows' milk lipoprotein lipase (LPL) to investigate the susceptibility of the triglyceride(TG)-rich lipoprotein fraction to hydrolysis. Mean KM and vmax of this reaction increased in patients between 09.00 and 13.00 h (p = 0.016 and 0.015, respectively) and decreased again thereafter, whereas no diurnal change was observed in normal subjects (p = 0.31 and 0.27, respectively). At 13.00 and 23.00 h patients showed a higher mean KM (p less than 0.02) at 23.00 h a higher mean vmax (p less than 0.03) than normal subjects. When the data were expressed as reaction rates (FFA formation rates) at TG-concentrations in the in vivo range, neither group showed a diurnal difference. Patients showed a significantly lower reaction rate than normal subjects only at 13.00 h at TG concentrations below 3 mmol X 1-1. This suggests that a defect in the suitability of TG-rich particles to serve as a substrate for LPL is not likely to play a role in the development of hypertriglyceridaemia. PMID- 3839094 TI - Illinois traces cause of Salmonella outbreak. PMID- 3839093 TI - [Acute pseudo-obstruction of the colon (Ogilvie's syndrome). Internal medicine aspects]. AB - Four patients with acute colonic pseudo-obstruction are described. The clinical and radiological picture is suggestive of colonic obstruction, without detectable organic obstruction. The syndrome usually occurs after surgery or trauma, or is related to severe preexisting systemic illness; its association with alcohol intake is frequently overlooked. The most severe complication is cecal rupture, which may occur at a diameter of 12 cm or more and which has a lethality rate of 40%. The primary management of colonic pseudo-obstruction is conservative, and includes an attempt at colonoscopic decompression; in most cases cecostomy can be avoided. PMID- 3839095 TI - A novel mechanism of somatic rearrangement predicted by a human T-cell antigen receptor beta-chain complementary DNA. AB - The T-cell antigen receptor is a cell surface molecule vital in mediating the cellular immune response. The arrangement and rearrangement of the gene segments encoding the beta-chain polypeptide of the receptor are similar to those of immunoglobulin gene segments. The two constant region genes of the human T-cell antigen receptor are 8 kilobases apart with a cluster of joining segments located 5' of each constant region gene. Although most beta-chain gene rearrangements involve the variable, diversity, and joining segments, analysis of a beta-chain complementary DNA clone suggests the occasional occurrence of another type of rearrangement. PMID- 3839096 TI - Tracing contacts of persons with sexually transmitted diseases in a developing country. AB - A simplified system for tracing of contacts of patients suffering from sexually transmitted diseases is presented. Use of a contact card given to the index case led 341 contacts (19.8%) to attend a clinic for treatment voluntarily. Visits to the homes of contacts who did not bring their cards to the clinics were made by health assistants employed by the local health department. After being traced in this manner, a further 367 contacts (21.3%) were seen. No substantial cost was borne by the department, and the exercise did not necessitate the employment of additional staff. PMID- 3839097 TI - Psychosocial factors in admitting to homosexuality in sexually transmitted disease clinics. AB - This study investigated the factors that predict nonadmission of homosexual orientation in public and private clinics for sexually transmitted diseases in Sweden, Finland, Ireland, and Australia. Results from 604 respondents indicate that nonadmitters in all four countries are likely to conceal their orientation from most people, to expect the most negative reaction to their homosexuality, to believe in more conservative sex roles for males and females, to report themselves as more bisexual, to have had no previous sexually transmitted infections, and to have had worse relationships with their mother during adolescence than admitters. Men who attend private clinics are usually older, more conservative, of higher social class, and have had more negative reactions to their homosexuality from others. These data suggest that nonadmitters are most likely to be reassured by empathy and, particularly, explicit discussion of and expressed acceptance of homosexuality and bisexuality, reiteration of confidentiality. and avoidance of questions that assume the sex of partner. Thus, manipulation of the clinic environment may help to decrease the number of individuals who do not admit to sexual contacts with members of the same sex. PMID- 3839098 TI - [Determination of speech perception in patients with auditory prosthesis by the word selection method]. PMID- 3839099 TI - [Combined auditory prostheses in a mixed form of hearing loss]. PMID- 3839100 TI - [50-year experience with the surgical treatment of goiter in the Transcarpathian region]. AB - The article generalizes experience with the surgical treatment of 1988 patients with different diseases of the thyroid gland. Indications for the surgical treatment, special preoperative management, choosing the anesthesia, methods and technique of the operation are discussed. PMID- 3839102 TI - Microcomputer applications in health population surveys: experience and potential in developing countries. AB - Regrettably, because the content and technology are evolving so rapidly the literature on the application of microcomputer technology to health and development is either out of date, or hard to find (e.g. unpublished reports from consultants working with development agencies or universities). The time needed to review and publish an article or a book dictates that by the time it is published, any statements about current hardware will be obsolete. For example, a recent volume by Ingle et al., quite sound from the theoretical and practical point of view is already out of date with respect to hardware details. For that reason no hardware suggestions are made in this article. On the other hand, detailed reports of experience with first-generation microcomputers are very useful to the individual planning a developing country application. From the literature and our own field experience with respect to microcomputer applications in health/population surveys in developing countries, the following are useful summary points for projects currently going into the field. Careful planning is absolutely necessary if microcomputer technology is to be applied successfully to field data collection problems. Search out organizations with similar experiences. Collaboration among staff at all levels is essential for a system to be installed and utilized effectively. The particular technology combination selected must be adapted to the field situation. Remember survey complexity and size. Training is essential, and should be on-the-job and oriented towards specific tasks. If time consuming and repetitive tasks are given over to the microcomputer the technology will be readily accepted and fully utilized. To the extent that a community of users can be formed, the entire adoption process will be stimulated and results improved. Most maintenance and some repairs should be carried out in the field by local project personnel. For most survey and data acquisition problems some custom programming will be needed; this requires a good working knowledge of a powerful programming language (although this is likely to change in the near future). For descriptive statistics and small data management problems off-the-shelf software is appropriate but can be expensive. Compare options. Standardization and compatibility must be considered in all applications. This is important!(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3839101 TI - Rectal neoplasia in the dog: a clinicopathological review of 31 cases. AB - A clinicopathological review was made of 31 cases of canine rectal neoplasia. The adenomatous polyp was the commonest tumour and had the best prognosis. With the exception of adenocarcinomas the results of surgical excision of malignant neoplasms, including two cases of rectal lymphosarcoma, were encouraging. PMID- 3839103 TI - Characterization of microheterogeneity of human thyroglobulin from different thyroid disorders. AB - Human thyroglobulin (Tg) was isolated to apparent purity from various thyroid tissue samples obtained after surgery. Iodine and iodothyronine content of Tg was determined. Isoelectric focussing (IEF) was performed on thin layer agarose gels. Tg revealed a microheterogeneity of 6 bands in the range between pH 4.2 and 4.6. The intensity of the single bands depended on the iodothyronine content of Tg. With increasing degree of iodination, the bands with a lower pI (pI 4.35, 4.40) became more prominent, whereas the bands with higher pI (pI 4.55, 4.60) diminished. This typical change in microheterogeneity pattern could be confirmed by kinetic in vitro iodination and consecutive iodothyronine formation of low iodinated Tg (0.05% iodine). After in vitro desialylation, the bands shifted to a higher pH range (pH 4.60 to pH 4.90), but no reduction of the number of bands occurred. Even in desialylated Tg microheterogeneity is still dependent on iodine content. These results suggest, that the microheterogeneity of Tg is influenced, but not caused by different iodine and NANA content. Different polypeptide composition may be responsible for the microheterogeneity of Tg. In thyroid diseases without disturbance in Tg synthesis (endemic, diffuse and nodular goitre, Graves' disease) variations in relative intensity of single bands could be related to differences in iodine content. In thyroid cyst fluid and cold nodules in addition to low iodinated Tg, further bands were found with pI-values comparable to desialylated Tg. PMID- 3839104 TI - Families of children with idiopathic hypercalciuria. Evidence for the hormonal basis of familial hypercalciuria. AB - Six children with idiopathic hypercalciuria and their families were examined with an oral calcium loading test. Family members were divided into two clinical categories: group 1 consisted of the six index children and their parents and siblings with urolithiasis or unexplained hematuria; group 2 comprised the remaining parents and siblings without signs or symptoms associated with hypercalciuria. The results revealed that fasting urinary excretion of calcium was similar in both groups, but group 1 displayed a greater calciuric response to an oral calcium load. Serum concentrations of calcitriol (1,25-dihydroxyvitamin D3) and calcium were higher in group 1 than in group 2, while parathyroid activity was lower in group 1 patients. Urinary excretion of sodium, phosphorus, and magnesium, urine pH, serum levels of calcifediol (25-hydroxyvitamin D3) and phosphorus, and the renal tubular threshold for phosphate were not significantly different in the two groups. These findings suggest that idiopathic hypercalciuria may arise from a disturbance in the regulation of vitamin D metabolism that mediates enhanced intestinal absorption of calcium. PMID- 3839105 TI - Beneficial effects of naloxone in a patient with intestinal pseudoobstruction. AB - A 15-day course of Naloxone treatment was given to a patient with intestinal pseudoobstruction who had previously undergone subtotal colectomy with terminal ileostomy for invalidating constipation. The effects of the drug were assessed according to symptoms, by recording the myoelectric activity of the stomach, and by measuring gastric emptying of a radiolabeled solid-liquid meal and the intestinal transit time of radiopaque markers. All tests were performed 1) at baseline; 2) after 2 wk with Naloxone 1.6 mg subcutaneous per day; and 3) after 8 days of placebo. Results showed that before treatment gastric emptying of solids was delayed, emptying of liquids was normal, myoelectric activity of the stomach was normal, small intestinal transit time of radiopaque markers was considerably increased while ileal output was markedly decreased. After Naloxone, gastric emptying of solids was markedly accelerated, emptying of liquids remained normal, gastric electrical spiking activity increased, small intestinal transit time strikingly decreased, and ileal output increased. After placebo, a tendency to return to pretreatment values was observed. This observation suggests that Naloxone may be helpful in the treatment of some patients with intestinal pseudoobstruction. PMID- 3839107 TI - Automating the purchasing and inventory control functions. AB - Factors involved in computerizing the purchasing and inventory control functions in hospital pharmacies are described. When initiating an automated purchasing and inventory control system, a feasibility study should first be conducted to determine the extent of automation needed to develop a cost-effective system. The design of the system will depend on the extent to which the department of materials management is involved with other hospital departments. The advantages and disadvantages of decentralized versus centralized systems are discussed, and criteria for selecting hardware and software vendors are presented. A return-on investment analysis should be performed to validate the benefits or savings expected from implementing the new automated system. Factors to consider during implementation of the new system and future developments affecting purchasing and inventory control systems, such as bar coding, are discussed. With the current concern about rapidly rising health-care costs and the need to enhance productivity, the development and implementation of automated purchasing and inventory control systems are important strategies for institutions to pursue now. PMID- 3839106 TI - Hb Regina or alpha 2 beta 2 96(FG3)Leu----Val: a high oxygen affinity variant discovered by cation-exchange HPLC. AB - Results are reported of studies of the hemoglobin from one member of a Canadian family with a mild erythrocytosis. This variant, which accounted for about 40% of the hemoglobin, could be separated from Hb A and Hb A2 by cation-exchange chromatography. Micro methodology allowed the characterization of a Leu----Val replacement at position beta 96(FG3). Hb Regina has an increased oxygen affinity, which adequately explains the hematological observations. PMID- 3839108 TI - Selecting a personal computer for the home and office. AB - Potential uses, reasons for purchasing, and principles in selecting a personal computer for the office or home are described. The decision to purchase a personal computer involves acquiring basic knowledge, determining generic software needs, selecting appropriate hardware, designing the system on paper, determining costs, selecting a vendor, and purchasing and implementing the system. The user should start with basic equipment and add to the system as technology and his own proficiency advance. A personal computer should be designed for growth (adaptability), because equipment can quickly become obsolete. Purchasing a personal computer requires an organized approach and a substantial time commitment both for research before selecting a computer and for becoming a proficient user. PMID- 3839109 TI - Mass of rigid contact lenses. AB - Mass should be considered as one of several clinically malleable physical properties of contact lens materials. Lenses with identical posterior surface designs and back vertex powers may have different front surface parameters and thicknesses when manufactured from materials of several refractive indices. Change in anterior surface design affects overall lens volume, which combines with differences in specific gravity to change overall lens weight or mass. Clinical in situ contact lens performance may be affected in many ways by changes in anterior surface profile, volume, and overall mass, although back surface design and effective power is held constant. This study presents methodology for comparing the predicted mass of specific lens designs made from different rigid lens materials. Both theoretical and sample values are presented and discussed. Results suggest that specific gravity by itself may be a good clinical guide to the relative mass of identically designed lenses made of different materials. However, as lens mass can affect lens performance in several ways, it might be worthwhile for the clinician and/or manufacturer to develop methods whereby such calculations were automatically provided in each individual situation. PMID- 3839110 TI - Intestinal absorption of 1,25-dihydroxyvitamin D3 in the rat. AB - Intestinal absorption of 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] from in vivo jejunal sacs was studied in rats with thoracic duct and bile duct cannulas. In 6 h 86.5% of the administered 1,25(OH)2D3 was absorbed, but only 7.3% was recovered in thoracic duct lymph. Appearance in plasma of [3H]-1,25(OH)2D3 after intrajejunal administration was identical in rats with and without diverting lymph cannulas, indicating that the 1,25(OH)2D3 is absorbed almost entirely via portal blood. When 1,25(OH)2D3 was instilled into the jejunum in a fat suspension without bile salts rather than a mixed micellar solution, less was recovered in lymph, but total intestinal absorption was unchanged. High-pressure liquid chromatography of a lymph extract demonstrated that 1,25(OH)2D3 was present only as the unchanged secosteroid. In lymph, only 4.1% of the 1,25(OH)2D3 was in the chylomicrons, with the remainder bound to the plasma protein fraction of lymph. Treatment of rats with cycloheximide to block chylomicron synthesis did not decrease absorption of 1,25(OH)2D3. These results indicate that intestinal absorption of 1,25(OH)2D3 is effective and not very dependent on luminal bile salts. Almost all 1,25(OH)2D3 is released from the intestine directly into portal blood and does not require packaging in chylomicrons for transport into intestine lymph. PMID- 3839111 TI - Effects of selective inhibition of thromboxane synthesis on renal function in humans. AB - Thromboxane A2, a potent vasoconstrictor, is a major metabolite of arachidonic acid in the human kidney. To determine the role of thromboxanes in renal hemodynamics, we administered the new thromboxane inhibitor dazmegrel or placebo to 20 healthy volunteers for 14 days in a double-blind protocol. Dazmegrel reduced urinary thromboxane B2 by an average of 68% and serum thromboxane B2 by 79%, without affecting urinary excretion of the prostacyclin metabolite 6 ketoprostaglandin F 1 alpha. Neither p-aminohippurate clearance nor inulin clearance were altered by thromboxane inhibition. Thus it is unlikely that thromboxane A2 plays a major role in the regulation of glomerular function in healthy humans. PMID- 3839112 TI - Cellular contribution to pH-mediated calcium flux in neonatal mouse calvariae. AB - Net calcium flux from cultured neonatal mouse calvariae into the culture medium is pH dependent, and acidified culture medium causes egress of calcium from bone. To determine whether calcium flux is mediated by pH effects on bone cell function, we cultured calvariae for 24 h with sodium azide, acetazolamide, parathyroid hormone (PTH), 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], or after three successive freeze-thaw cycles, treatments that would be expected to alter bone cell function. We recultured bones for 3 h with the respective treatment and measured calcium flux. Sodium azide and freeze-thaw cycles produced a net influx of calcium (JCa = -22 +/- 7 and -23 +/- 6 nmol X bone-1 X 3 h-1, respectively) compared with net efflux of control bones (JCa = 35 +/- 6) at a similar initial medium pH. Acetazolamide reduced net flux to 0 (JCa = 7 +/- 6). PTH and 1,25(OH)2D3 increased net calcium efflux from bone (JCa = 78 +/- 7 and 74 +/- 10, respectively). Despite changing net flux, the slope dependence of net flux on medium pH was the same in the control group and all five treated groups of bones. The similarity of slopes indicates that the pH dependence of net flux is not a result of pH acting on bone cells but probably an effect of altered mineral equilibria. The difference in net flux at similar pH indicates that calcium efflux is partially inhibited by acetazolamide and stimulated by both PTH and 1,25(OH)2D3. PMID- 3839113 TI - Estimation of disulfide bonds using 2-nitro-5-thiosulfobenzoic acid: limitations. AB - Recently an elegant method for the quantification of the number of disulfide bonds in proteins and peptides has been reported [T.W. Thannhauser, Y. Konishi, and H.A. Scheraga (1984) Anal. Biochem. 138, 181-188]. The method is based on the quantification of 2-nitro-5-thiobenzoate (NTB) formed from the reaction of 2 nitro-5-thiosulfobenzoate with disulfides in the presence of excess sodium sulfite. Here it is reported that the NTB anion undergoes photochemical reaction with excess sulfite in the system, which results in the rapid disappearance of absorbance at 412 nm in the presence of light. The nonchromophoric derivative of this photochemical reaction is tentatively identified as a sulfo derivative of NTB. Based on these observations it is suggested that, for the quantification of disulfide bonds using the NTSB method, the assay should be carried out in the dark. PMID- 3839114 TI - Spinal fluid concentrations of mepivacaine in horses and procaine in cows after thoracolumbar subarachnoid analgesia. AB - The CSF concentrations of mepivacaine in 10 Standardbred horses and of procaine in 10 Holstein cows given the drugs by thoracolumbar subarachnoid injection were determined. Mepivacaine hydrochloride was injected into the horses (502 +/- 60.5 kg) at an average dosage of 30 mg (1.5 ml of 20 mg/ml solution). Analgesia was produced 7.5 +/- 4.3 minutes after injection, extended between spinal cord segments T13 and L3 on both sides of the spinal column, and lasted 47 +/- 18.7 minutes at the T18 dermatome. Procaine hydrochloride was injected into cows (614 +/- 51.5 kg) at a dosage ranging between 75 mg and 100 mg (1.5 ml and 2 ml of 50 mg/ml solution). Analgesia was produced 8.2 +/- 2.0 minutes after injection, extended between spinal cord segments T11 and L4 on both sides of the spinal column, and lasted 47 +/- 17.5 minutes at the T13 dermatome. The critical CSF concentrations of local anesthetics required to eliminate response to pinprick stimulation were 204.4 +/- 90.3 micrograms of mepivacaine/ml in horses and 197.0 +/- 86.1 micrograms of procaine/ml in cows. Average CSF concentrations at 120 minutes after injections were made were 16.8 +/- 15.5 micrograms of mepivacaine/ml and 30.6 +/- 17.1 micrograms of procaine/ml. In in vitro experiments to determine the rates of hydrolysis of mepivacaine and procaine in CSF, significant changes (P greater than 0.05) were not seen in the CSF concentrations of mepivacaine in horses and procaine in cattle after a 120-minute incubation (37 C). The analgesic threshold concentrations of mepivacaine in CSF of horses and procaine in CSF of cows were similar.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839115 TI - Dose-titration studies of ivermectin against experimental Ancylostoma caninum and Uncinaria stenocephala infections. AB - Dose-titration trials of ivermectin were conducted on pups with dual experimental infections of 4th-stage larvae or adult Ancylostoma caninum and Uncinaria stenocephala. Ivermectin was administered orally or subcutaneously at dosages of 0.006, 0.012, or 0.024 mg/kg of body weight. Maximal or near maximal (greater than or equal to 96% to 100%) anthelmintic effect was observed for both stages of development for each hookworm species by either route of administration at a dosage of 0.024 mg/kg. Responses for all of the aforementioned categories were linearly related to increasing log dosage of ivermectin, with common slopes (regression coefficients). Regression analysis also provided estimates of the minimal dosages required to produce maximal reduction in worm burden for each stage, species, and route of administration. The estimated ivermectin dosages for maximal efficacy ranged from a low of 0.014 mg/kg for adult A caninum by oral treatment to 0.044 mg/kg for 4th-stage larvae of U stenocephala by oral treatment. PMID- 3839116 TI - Package inserts for antituberculosis drugs and tuberculins. PMID- 3839118 TI - Lymphoma, hypercalcemia, and serum calcitriol levels. PMID- 3839117 TI - [Transient neonatal hyperthyroidism in the child of a treated hyperthyroid mother. Subsequent appearance of sexual precocity]. AB - We report a newborn female with neonatal hyperthyroidism, born to a mother with Graves disease treated with potassium iodide and carbimazole. At four months she had some breast development, a bone age advance of one year, and elevated levels of FSH and estradiol. Later on the prolactin level was also raised, while LH and TSH values continued low. Posteriorly, irregular cutaneous pigmentation, brown in colour, was evident on the neck and trunk, and a McCune-Albright syndrome was suspected. The relationship between these conditions and treatment of them is discussed. PMID- 3839119 TI - [Intra-arterial chemotherapy for hepatic metastases. Experience of the Pitie Salpetriere Hospital Group]. AB - Intra-arterial chemotherapy of hepatic metastases is theoretically interesting because of the essentially arterial blood supply of these metastases in contrast with the healthy tissue and because of the theoretical pharmacokinetic advantage for certain drugs, depending on their quotient of hepatic extraction and the wole body clearance. We have treated 43 patients with this technique. The primary cancer was a cancer of the colon in 10 patients, a breast cancer in 16 patients, a melanoma in 7 patients and cancers of other sites in 10 patients. The chemotherapy was initially administered by selective catheterisation of the hepatic artery via an axillary approach and usually consisted of a bolus injection of adriamycin 40 mg/m2 and mitomycin 10 mg/m2 and an infusion of 5 FU 1 g/m2 for 24 to 72 hours. In 15 patients, we surgically implanted a subcutaneous reservoir and catheter. To date, we have performed 114 arterial injections via the catheter and 60 injections into sub-cutaneous reservoirs. We have observed few complications, apart from thrombosis of the axillary artery (3 cases) and of the hepatic artery (5 cases). We have obtained 4 complete responses, 16 partial responses, 8 stabilisations, 10 failures and, unfortunately, 5 patients died rapidly after a single course of chemotherapy and could not be evaluated. The response rate was particularly high for the breast cancers (about 60 percent) and the cancers of the colon (more than 50 percent). We have also observed 3 complete responses in patients treated by intravenous chemotherapy with the same protocol. PMID- 3839120 TI - In vitro activity of BMY-28142 in comparison with those of other beta-lactam antimicrobial agents. AB - The in vitro susceptibility of 406 clinical isolates to BMY-28142, a new semisynthetic cephem, was evaluated and compared with cefpimizole, HR 810, ceftazidime, cefotaxime, moxalactam, and cefoperazone in a broth microdilution assay. On a weight basis, the activity of BMY-28142 against Escherichia coli, Proteus species, and Klebsiella-Enterobacter-Serratia was superior to the other cephems. Against gentamicin-susceptible and -resistant Pseudomonas aeruginosa, BMY-28142 was more active than the other cephems, except ceftazidime and HR 810. A total of 74% of gram-negative and 56% of gram-positive isolates resistant to third-generation cephalosporins were susceptible to less than or equal to 8 micrograms of BMY-28142 per ml. Finally, for 83% of tested isolates, the bactericidal concentration of BMY-28142 was within one dilution of the inhibitory concentration. PMID- 3839121 TI - A device for the nondestructive decontamination of large volumes of infected egg waste. AB - A device for the decontamination of large numbers of infected eggs which remain as by-products of vaccine production is described. Homogenates of infected eggs were heated to 60 degrees C and maintained at that temperature for 3 h in a specially constructed recirculation tank. The infectivity of all detectable influenza viruses and more than 99% of the bacteria associated with the homogenates was destroyed by this procedure. Eggshell material was separated from the proteins present in the homogenate at the end of the heating cycle by means of a cyclone separator. The proportions of all the amino acids, except cystine, in the proteins remaining in the suspension after the heating cycle were similar to that normally present in whole embryos. PMID- 3839122 TI - Short-term interactions between DDT and endrin accumulation and elimination in mosquitofish (Gambusia affinis). PMID- 3839123 TI - Terminal deoxynucleotidyltransferase. Alignment of alpha- and beta-subunits of the core enzyme along the primary translation product. AB - Terminal deoxynucleotidyltransferase exists in multiple Mr forms, all apparently generated from a single polypeptide of 62kDa. On isolation and purification, the smallest catalytically active protein of this enzyme consists of two subunits, alpha (12kDa) and beta (30kDa). Recently a complementary-DNA nucleotide sequence has been reported for a portion of the enzyme from human lymphoblast. We have pinpointed the locations of the alpha- and beta-subunits within the elucidated nucleotide sequence. From these data, the portions of the nucleotide sequence coding for the catalytically important area of the transferase can be estimated. Here the amino acid sequence of a number of tryptic peptides from calf alpha- and beta-subunits is presented. Because of the striking homology between the amino acid sequence of the calf enzyme and that predicted for human lymphoblast enzyme, it is possible for us to conclude that the alpha-subunit was generated from the C terminus of the precursor protein and the beta-subunit was non-overlapping and proximal. PMID- 3839124 TI - Evidence for a single rat thyrotropin-beta-subunit gene: thyroidectomy increases its mRNA. AB - We have isolated and characterized cDNAs representing the rat thyrotropin-beta subunit. The cDNAs were prepared from poly(A)+ RNA obtained from rat pituitary glands and encode the precursor of the rat thyrotropin-beta-subunit which contains a leader or signal peptide of 20 amino acids, and an apoprotein of 118 amino acids. Blot hybridization analysis of total rat liver DNA digested with several restriction enzymes indicates the likelihood of a single gene encoding the rat thyrotropin-beta-subunit. In addition, analyses of pituitary RNA from normal and thyroidectomized rats indicate that the mRNA encoding the rat thyrotropin-beta-subunit is approximately 700 bases in length and its level increases 8--10-fold after thyroid gland ablation. PMID- 3839125 TI - Isolation and purification of canadaphore, a siderophore produced by Helminthosporium carbonum. AB - A new siderophore was isolated and purified from the spent growth medium of the fungus Helminthosporium carbonum by solvent extraction and reverse phase high pressure liquid chromatography. This new molecule has been assigned the name Canadaphore. Canadaphore was detected in culture filtrates after 15 days of growth and production was maximal after growth of H. carbonum to maximal stationary phase in modified Fries basal medium. Production of Canadaphore was completely suppressed when the organism was grown in medium supplemented with iron. Mass spectral analysis yielded a molecular mass of 680 Daltons for the iron Canadaphore complex and 627 Daltons for the iron-free molecule. Spectroscopic analysis indicates that Canadaphore is a siderophore of the hydroxamate type. PMID- 3839126 TI - Effect of the dialdehyde derivative of 5'-deoxyinosine on pyrimidine deoxyribonucleoside metabolism in L1210 cells. AB - The effects of the dialdehyde derivatives of inosine (Inox) and 5'-deoxyinosine (5'-dInox) on L1210 cells were compared. The growth of L1210 cells was inhibited to a greater extent by 5'-dInox than by Inox. The increased inhibition of L1210 cell growth by 5'-dInox was also reflected by the increased inhibition of the incorporation of precursors into RNA, DNA and proteins. Even though 5'-dInox was a more potent inhibitor, Inox accumulated in the L1210 cells to levels 4- to 5 fold greater than 5'-dInox. The metabolism of [5-3H]deoxycytidine and [5 3H]deoxyuridine by L1210 cells in culture, in the presence of Inox or 5'-dInox, indicated that dCMP deaminase was an intracellular site of action for 5'-dInox. The dCMP deaminase activity in cell-free extracts prepared from 5'-dInox-treated cells was reduced markedly. This decrease in activity was not reversed by increased substrate concentrations nor was the activity subject to allosteric activation by dCTP. Deoxyuridine and deoxycytidine were able to reverse the effects of 5'-dInox on the inhibition of L1210 cell growth. PMID- 3839127 TI - Effects of verapamil and dexamethasone on the 1,25-dihydroxyvitamin D3-mediated calcium absorptive mechanism in the organ-cultured embryonic chick duodenum. AB - 1,25-Dihydroxyvitamin D3 (1,25(OH)2D3) is known to induce the biosynthesis of a specific, calcium-binding protein (CaBP) and to stimulate calcium transport in the organ-cultured embryonic chick duodenum. The biosynthesis of CaBP has been shown previously to exhibit an absolute dependence on the ambient calcium concentration of the culture medium. Verapamil, a calcium-channel blocker, decreased calcium influx into the organ-cultured duodenum and inhibited the induction of CaBP by 1,25(OH)2D3. Raising ambient calcium concentrations to as high as 10 mM did not prevent or reverse the inhibitory actions of verapamil. Dexamethasone, known to augment CaBP biosynthesis and calcium uptake in the organ cultured duodenum in response to 1,25(OH)2D3, largely prevented inhibition of CaBP by verapamil. The actions of verapamil and dexamethasone were correlated with altered steady-state calcium concentrations of the organ-culture duodenum, strongly supporting a regulatory role of calcium in the 1,25(OH)2D3-mediated, intestinal calcium absorptive mechanism. PMID- 3839128 TI - 5-(N-phenylcarboxamido)-2-thiobarbituric acid (NSC 336628), a novel potential antitumor agent. PMID- 3839129 TI - [Structural traits of the antioxidant and fungicidal activity of steroid glycosides]. AB - To investigate the origin of antioxidant and antifungal properties of steroid glycosides (SG), a logico-structural analysis of the structure-activity relationships has been performed for 70 compounds using a set of computer programs STRAC. The following structural features responsible for antioxidant activity are revealed: 1) furostanol type of aglycon; 2) the presence of more than 4 branched monosaccharides in the carbohydrate chain; 3) the presence of glucose at C26 and OH-groups in the genin part of SG. Most characteristic for antifungal activity is the fragment genin-C3-Gal-Glc-Glc-Rha..., as well as the spirostanol type of aglycon. The computer analysis provided the basis for predicting a type of biological activity for 12 new compounds of the SG class. PMID- 3839130 TI - Cochlear implant. PMID- 3839131 TI - Thalassaemia genes in Peninsular Arabs. AB - The haematological indices of Peninsular Arabs (United Arab Emirate Nationals, Yemeni and Omani) have been examined. The most outstanding feature, seen in 40 50% of all subjects, was one of hypochromia, microcytosis associated with erythrocytosis. In approximately 5% the hypochromia was severe (MCH 19-22 pg) and 20% of these were found to have beta thalassaemia trait. In 10% of subjects the hypochromia was moderate (MCH 23-24 pg) and beta thalassaemia was confirmed in only 10%. The remaining 25% had a mild hypochromia (MCH 25-27 pg) and no beta thalassaemia was detected. The cause of the hypochromia in subjects with a normal Hb A2 (30% of the total population) is probably alpha thalassaemia, firstly because in those patients with an MCH of 19-24 pg the other haematological parameters are statistically the same as those with proven beta thalassaemia and, secondly, in those with an MCH of 25-27 pg iron deficiency is not common (6% of the population). The degree and pattern of the distribution of hypochromia of the three major ethnic groups of the Peninsular Arabs could be explained either by different alpha and beta thalassaemia genes being operative or by different degrees of inbreeding of the same genes. PMID- 3839132 TI - Effects of replacement of the hydroxyl group of cholesterol and tocopherol on the thermotropic behavior of phospholipid membranes. AB - The role of the hydroxyl groups of cholesterol and tocopherol in mediating their interaction with phospholipid bilayers has been a subject of considerable interest. We have examined this question by using derivatives of cholesterol and tocopherol in which the hydroxyl group is esterified to succinate. The hemisuccinate esters of cholesterol and alpha-tocopherol can be readily incorporated into phospholipid membranes and in fact can by themselves form closed membrane vesicles as demonstrated by the encapsulation of [3H]sucrose. The thermotropic behavior of mixtures containing each succinate ester and phospholipid was studied by differential scanning calorimetry. The effect of cholesteryl hemisuccinate on the thermotropic properties of dipalmitoylphosphatidylcholine and dimyristoylphosphatidylethanolamine is very similar to that of cholesterol. This indicates that the 3 beta-OH is not required for the formation of a cholesterol-phospholipid complex. In mixtures of tocopherol acid succinate and phospholipids the peak transition temperature is progressively shifted to lower temperatures as the mole fraction of alpha tocopherol succinate is increased, while the enthalpy of the transition is only slightly affected. At a tocopherol succinate/phospholipid molar ratio of 9/1 a phase transition is still detectable. A comparison between tocopherol succinate and tocopherol indicates that the substitution of the hydroxyl group reduces the interaction of tocopherol with phospholipids to a small but measurable extent. Thus, the hydroxyl group of tocopherol is more important than the hydroxyl group of cholesterol in influencing their interactions with phospholipids. PMID- 3839133 TI - Lipid phase separations induced by the association of cholera toxin to phospholipid membranes containing ganglioside GM1. AB - The interactions of cholera toxin and their isolated binding and active subunits with phospholipid bilayers containing the toxin receptor ganglioside GM1 have been studied by using high-sensitivity differential scanning calorimetry and steady-state and time-resolved fluorescence and phosphorescence spectroscopy. The results of this investigation indicate that cholera toxin associates with phospholipid bilayers containing ganglioside GM1, independent of the physical state of the membrane. In the absence of Ca2+, calorimetric scans of intact cholera toxin bound to dipalmitoylphosphatidylcholine (DPPC) large unilamellar vesicles containing ganglioside GM1 result in a broadening of the lipid phase transition peak and a slight decrease (less than 5%) in the transition enthalpy. In the presence of Ca2+ concentrations sufficient to cause ganglioside phase separation, the association of the intact toxin to the membrane results in a significant decrease of enthalpy change for the lipid transition, indicating that under these conditions the toxin molecule perturbs the hydrophobic core of the bilayer. Calorimetric scans using isolated binding subunits lacking the hydrophobic toxic subunit did not exhibit a decrease in the phospholipid transition enthalpy even in the presence of Ca2+, indicating that the binding subunits per se do not perturb the hydrophobic core of the bilayer. On the other hand, the hydrophobic A1 subunit by itself was able to reduce the phospholipid transition enthalpy when reconstituted into DPPC vesicles. These calorimetric observations were confirmed by fluorescence experiments using pyrene phospholipids.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839134 TI - Peptide transport in rabbit intestinal brush-border membrane vesicles studied with a potential-sensitive dye. AB - Peptide transport in purified rabbit intestinal brush-border membrane vesicles has been studied using a potential-sensitive fluorescent dye, di-S-C3(5). Transport of dipeptides is accompanied by an increase in the fluorescence of the dye in the presence and absence of Na+, indicating electrogenic, Na+-independent peptide transport. Dipeptides containing D-amino acids also increase the fluorescence, showing that these peptides too possess significant affinity for the peptide transport system. beta-Alanylglycylglycine and prolylglycylglycine, very much like the dipeptides, increase the fluorescence even in the absence of Na+ which demonstrates the Na+-independent, electrogenic transport of tripeptides. However, concentrations needed for half-maximal fluorescence changes are higher for tripeptides than for dipeptides suggesting different affinities for the carriers. The studies, in addition, provide evidence for the existence of more than one carrier system for translocation of small peptides in rabbit intestinal brush-border membrane. PMID- 3839135 TI - Uptake of antineoplastic agents into large unilamellar vesicles in response to a membrane potential. AB - Many drugs exhibit lipophilic and cationic (basic) characteristics. Previous studies have shown that lipophilic cations can be accumulated into model membrane 'liposomal' (vesicular) systems in response to establishing a membrane potential (inside negative) across the vesicle membrane. We demonstrate here that the anticancer drugs, adriamycin and vinblastine, can be rapidly accumulated into egg phosphatidylcholine large unilamellar vesicles in response to a valinomycin dependent K+ diffusion potential (delta psi) to achieve high effective interior concentrations. Further, trapping efficiencies approaching 100% can be easily achieved. The influence of lipid composition and the requirement for valinomycin have been examined for adriamycin. Equimolar cholesterol levels inhibit the uptake process at 20 degrees C. However, incubation at higher temperature results in enhanced uptake. Similarly, the presence of egg phosphatidylserine or incubation at elevated temperatures results in significant adriamycin uptake in the absence of valinomycin. It is shown that the adriamycin retention time in the vesicles is enhanced by an order of magnitude or more when actively trapped by the presence of a membrane potential in comparison to passive trapping procedures. It is suggested that such active trapping procedures may be of use for loading liposomal systems for drug delivery applications, and may provide avenues for controlled release of encapsulated material. PMID- 3839136 TI - Atypical Langmuir adsorption of inhalation anesthetics on phospholipid monolayer at various compressional states: difference between alkane-type and ether-type anesthetics. AB - Adsorption of chloroform, halothane, enflurane and diethyl ether on the air/water interface was compared with adsorption on the dipalmitoylphosphatidylcholine monolayer, spread on the air/water interface, at four compressional states; 88.5, 77.0, 66.5 and 50.5 A2 surface area per phosphatidylcholine molecule. Anesthetics were administered from the gas phase. The affinities of these agents to the phosphatidylcholine monolayer varied according to the state of the monolayer. Chloroform and halothane showed a stronger affinity to the highly compressed phosphatidylcholine monolayer (50.5 A2) than to the expanded monolayer (88.5 A2) or to the air/water interface without the monolayer. Diethyl ether behaved in reverse; a stronger affinity to the expanded monolayer was exhibited than to the compressed monolayer. Enflurane showed the highest affinity to the intermediately compressed monolayer (77.0 A2). The adsorption isotherm of anesthetics to the monolayer was characterized by atypical Langmuir-type, in which available number of binding sites changed when anesthetics were adsorbed. The mode of adsorption onto the monolayer was dissimilar to adsorption onto air/water interface, where adsorption followed the Gibbs surface excess. A theory is presented to explain the above differences. The adsorbed anesthetic molecules do not stick to phosphatidylcholine molecules but penetrate into the monolayer lattice and occupy the phosphatidylcholine sites at the interface. Quantitative agreement between the theory and the experimental data was excellent. For the monolayer at 50.5 A2 compression, the changes in the transfer free energy accompanying the anesthetic adsorption from the gas phase to the monolayer were in the order of chloroform greater than halothane greater than enflurane greater than diethyl ether, in agreement with the clinical potencies. PMID- 3839137 TI - Mechanism of stimulation of renal phosphate transport by 1,25 dihydroxycholecalciferol. AB - Vitamin D has been shown to stimulate renal phosphate transport and to alter membrane phospholipid composition. The present studies examine the possibility that the effects of 1,25(OH)2D3 on phosphate transport are related to its effects on membrane lipids. Arrhenius plots, which relate maximum rates of sodium dependent phosphate uptake into brush-border membrane vesicles to temperature were constructed. Phosphate transport was studied using brush-border membrane vesicles from normal, vitamin D-deficient, and physiologically replete (15 pmol/100 g body weight per 24 h) rats. These plots were triphasic with characteristic, lipid-dependent, slopes (M1,M2,M3) representing activation energies and transition temperatures (T1,T2). Physiologic 1,25(OH)2D3 repletion normalized these plots by stimulating phosphate transport at all temperatures, increasing T2 from 18 +/- 0.7 to 23.5 +/- 0.9 degrees C and decreasing M2 and M3 from -5.8 +/- 0.2 and -10.2 +/- 0.4 to -4.5 +/- 0.4 and -7.7 +/- 0.3, respectively. Pharmacologic (1.2 nmol/100 g per 3 h) 1,25(OH)2D3 treatment resulted in a change in the Arrhenius plot of phosphate transport to a biphasic one with a transition temperature of 30 degrees C. This effect was not blocked by cycloheximide. The Arrhenius plots of glucose transport were triphasic and unchanged with vitamin D repletion. These data support a liponomic mechanism of action for 1,25(OH)2D3 on phosphate transport. PMID- 3839138 TI - Substrate specificity of human plasma phospholipid transfer protein. AB - The ability of human plasma phospholipid transfer protein to transfer L-alpha [14C]dipalmitoylphosphatidylcholine (DPPC) from donor vesicles to acceptor high density lipoproteins (HDL) was examined, using vesicles of different compositions and sizes, and native or chemically modified HDL. Phosphatidylcholine (PC) transfer was inhibited by both cholesterol and sphingomyelin incorporation into egg-PC vesicles. On a molar basis, cholesterol inhibited transfer about 5-fold more than sphingomyelin; however, the effects of both lipids on the fluidity of the vesicle membrane (measured by fluorescence polarization of diphenylhexatriene), were closely correlated with their effects on PC transfer activity. Increase in vesicle size, and decrease in bilayer curvature, also reduced transfer: the largest vesicles had no transfer activity at all. Addition of phosphatidic acid up to 17 mol% had no effect on PC transfer. HDL apolipoprotein lysyl residues were chemically modified by reductive methylation, citraconylation, or acetoacetylation. The effects of modification on the apolipoprotein structure and on the HDL particle were assessed by intrinsic fluorescence measurements, SDS-polyacrylamide gel electrophoresis patterns, and gel chromatography. Only acetoacetylation significantly affected any of these parameters. The ability of HDL to accept PC in the absence of phospholipid transfer protein decreased with an increase in apolipoprotein negative charge while, in the presence of phospholipid transfer protein, the acceptor ability of HDL increased up to 1.7-fold with an initial increase in negative charge and then decreased, ultimately to zero, upon extensive modification. PMID- 3839139 TI - Liposomes of dipalmitoylphosphatidylcholine associate with natural surfactant. AB - Unilamellar liposomes of an average diameter of 0.05 micron formed by sonication of dipalmitoylphosphatidylcholine associate in vitro with the large aggregate forms of natural surfactant. The liposomal-surfactant aggregates are stable and previously associated liposomes are not released from the aggregates by the addition of more liposomes. Radiolabeled liposomes, surfactant, and preformed liposomal-surfactant aggregates were injected at a dose of 8-10 mg lipid (about 2 times the endogenous surfactant pool size) into the airways of 3-day-old rabbits. Following airway injection, labeled phosphatidylcholine from the liposomal surfactant aggregates were recovered in approximately equal amounts by alveolar wash and in the residual lung tissue fractions. This recovery pattern and the clearance kinetics were equivalent for 48 h after airway injection to those measured with radiolabeled surfactant alone. In contrast, following the injection of liposomes alone, labeled phosphatidylcholine from the liposomes was recovered primarily by alveolar wash at 3 and 24 h. The overall clearance of the liposomal derived phosphatidylcholine from the lung was more rapid than was the clearance of the phosphatidylcholine from the surfactant or liposome-surfactant complexes. Liposomes can interact with surfactant in vitro, and the liposomes associated with the surfactant aggregate have a metabolic fate in vivo similar to surfactant and different from liposomes alone. PMID- 3839140 TI - Catabolism of arylglycerol-beta-aryl ethers lignin model compounds by Pseudomonas cepacia 122. AB - Pseudomonas cepacia 122 can grow on several lignin model compounds including the arylglycerol-beta-aryl ethers guaiacylglycerol-beta-coniferyl ether and guaiacylglycerol-beta-guaiacyl ether. Non-phenolic lignin model compounds are not degraded by this bacterium. The enzyme system catalyzing guaiacylglycerol-beta guaiacyl ether dissimilation in Pseudomonas cepacia 122 is inducible and repressed by glucose. Guaiacylglycerol and guaiacylglycerol-beta-guaiacyl ether were identified as intermediates in guaiacylglycerol-beta-coniferyl ether catabolism. Guaiacol, guaiacoxyethanol, vanillin and vanillic acid were identified as intermediates of guaiacylglycerol-beta-guaiacyl ether breakdown indicating that a C alpha-C beta splitting mechanism is involved in the degradation of aryl-alkyl ethers by this bacterium. PMID- 3839141 TI - Computer simulation of an ideal lateral inhibition function. AB - A model for lateral inhibition is presented in the context of the auditory channel. The mechanical analyzing system of the inner ear cannot alone account for the frequency resolution of hearing. Some additional mechanism, possibly lateral inhibition located in the auditory neural network, is needed to achieve the frequency selectivity observed in electrophysiological and psychoacoustical experiments. In a computer simulation study, the shape of an ideal lateral inhibition function was obtained. Such a function is applicable to all sensory modalities. In hearing, this function permits the sharpest possible frequency resolution as it can completely remove the frequency desharpening effect of the mechanical properties of the basilar membrane. In vision, it can compensate for abberations caused by the imperfections of the optical system of the eye. PMID- 3839142 TI - An overall description of retinotopic mapping in the cat's visual cortex areas 17, 18, and 19. AB - Mathematical functions are derived which model the retinotopic mapping in the cat's visual cortical areas 17, 18, and 19. All three mappings are simple modifications of a complex power function with an exponent of 0.43. This function is decomposed so as to give an intermediate stage which is common to all three mappings and can be regarded as a model of the lateral geniculate nucleus mapping. The influence of retinotopic mapping on visual receptive fields was studied. The results show that a dependence of the receptive field properties on the position in the visual field is to be expected. PMID- 3839143 TI - Statistical power of the controlled research on wheat gluten and schizophrenia. PMID- 3839144 TI - The use of meniscal fibrocartilage as a surface arthroplasty to effect the repair of osteochondral defects: an experimental study. AB - Meniscal fibrocartilage autografts, homografts, glutaraldehyde treated homografts and glutaraldehyde treated xenografts were inserted into articular defects in the rabbit patello-femoral groove. They appeared capable of restoring a functional articular surface. Considerable variation in the type of bond formed between the host and graft occurred but no evidence of rejection was observed. This tissue would appear to offer potential for restoring localized articular osteochondral defects. PMID- 3839145 TI - [Spontaneous tumors in athymic rats]. AB - Three cases of spontaneous tumors (one benign and two malignant) are reported in nude rats bred at the All-Union Cancer Research Center, Academy of Medical Sciences of the USSR. An eight-month-old rat developed a sebaceous adenoma in the region of the abdomen. The other one-year old rat developed hemoblastosis with infiltrations in the lung, liver, kidneys, spleen, and lymph nodes. A 4-month-old rat developed colloidal (follicular) thyroid cancer. PMID- 3839146 TI - [Differentiation characteristics of circulating and bone marrow hematopoietic stem cells and the effect of thymus factors]. AB - Circulating hemopoietic stem cells (HSC) considerably differ from bone marrow HSC in active erythroid differentiation. After thymectomy of adult animals the number and differentiation of blood HSC remain unchanged, whereas during the cloning of bone marrow cells, a decrease in the number of granulocytic colonies is revealed. In in-vitro experiments, thymalin does not influence the number or differentiation of circulating HSC. On the contrary, in experiments made in vivo, it dramatically lowers erythroid specialization of blood HSC in thymectomized and sham-operated mice, which is followed by the diminution of the total number of circulating HSC. Differentiation of thymectomized mice bone marrow stem cells is completely normalized after thymalin injection. Sham-operated and thymectomized animals' HSC stimulated by thymalin injection become similar to bone marrow cells of normal mice as regards the trend of differentiation. Thymalin injection is likely to change the bone marrow HSC differentiation profile, thereby preventing the release of the cells with erythroid-oriented differentiation from the bone marrow to blood. The influence of thymalin on HSC is mediated by the environmental component which is present in the bone marrow and absent from the peripheral blood. PMID- 3839147 TI - A computer-based test system for implementing pure-tone audiometry, acoustic immittance and tympanic membrane displacement measurements. AB - Valuable information on functional features of the auditory system may be gained by measuring the fine structure and time course of the acoustic stapedial reflex. This type of measurement invariable needs a computer for averaging the reflex response and the analysis of its salient features. This paper describes a 'Computerised Audiometric System' (CAS) which allows an integrated approach to certain audiometric tests, including pure-tone audiometry and tympanometry. In particular, 'tympanic membrane displacement' and acoustic immittance measurements have been combined to allow a comprehensive study of the reflex characteristics to be made. The purpose of this paper is twofold; first to describe the CAS in respect of reflex measurements; secondly, to describe the design of a practical computerised audiometric system which may be used for a wide variety of clinical testing and research. Features of special mention are the modular design strategy used, which makes the system an extremely versatile research tool as well as a potentially valuable addition to the audiology clinic, and menu-driven software written in FORTH, which allows complex test paradigms to be learnt and reliably implemented with a minimum of training. The prototype facility has been used extensively for research over the past 18 months, and a second is now installed in the Wessex Regional Audiology Centre. Both facilities will be linked to a patient data bank now under development. PMID- 3839148 TI - A computer program for urology. AB - Modern information technology offers new opportunities for the storage and manipulation of clinical data within hospital departments. We have designed and put into use a microcomputer system for urology. Its basic structure and main functions are described. PMID- 3839149 TI - Connections and oculomotor projections of the superior vestibular nucleus and cell group 'y'. AB - Attempts were made to determine brainstem and cerebellar afferent and efferent projections of the superior vestibular nucleus (SVN) and cell group 'y' ('y') in the cat using axoplasmic tracers. Injections of HRP, WGA-HRP and [3H]amino acids were made into SVN and 'y' using two different infratentorial stereotaxic approaches. Controls were provided by unilateral HRP injections involving the oculomotor nuclear complex (OMC), the interstitial nucleus of Cajal (INC) and the deep cerebellar nuclei (DCN). Large injections of SVN almost invariably involved 'y' and dorsal parts of the lateral vestibular nucleus (LVN). Smaller injections involved central and ventral peripheral parts of SVN. Discrete injections of 'y' involved small dorsal parts of LVN. Afferents to SVN are derived mainly from the vestibular nuclei (VN) and parts of the vestibulocerebellum. SVN receives afferents: bilaterally from caudal portions of the medial (MVN) and inferior (IVN) vestibular nuclei and 'y'; contralaterally from ventral and lateral parts of SVN and rostral MVN; and ipsilaterally from the nodulus, uvula and medial parts of the flocculus. Purkinje cells (PC) in medial parts of the flocculus project to central regions of SVN, while PC in the nodulus and uvula appear to project mainly to dorsal peripheral regions of SVN. SVN receives sparse projections from the ipsilateral INC, the contralateral central cervical nucleus (CCN) and virtually no projections from the reticular formation. SVN projects via the medial longitudinal fasciculus (MLF) to the ipsilateral trochlear nucleus (TN), the inferior rectus subdivision of the OMC, the INC, the nucleus of Darkschewitsch (ND) and the rostral interstitial nucleus of the MLF (RiMLF). Contralateral projections of SVN cross in the ventral tegmentum caudal to most of the decussating fibers of the superior cerebellar peduncle and terminate in the dorsal rim of the TN and the superior rectus and inferior oblique subdivisions of the OMC; sparse crossed projections enter the INC and the ND. Cerebellar projections of SVN end as mossy fibers in the ipsilateral nodulus, uvula and in medial parts of the flocculus bilaterally. Retrograde transport from unilateral injections of the OMC indicate that afferents from SVN arise ipsilaterally from central and dorsal regions and contralaterally from dorsal peripheral regions. Ventral cell group 'y' receives small numbers of afferent fibers from caudal central parts of the ipsilateral flocculus. No fibers from ventral 'y' could be traced to other vestibular nuclei, the OMC or the cerebellum.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3839150 TI - Occipital cortical neurons with transient pyramidal tract axons extend and maintain collaterals to subcortical but not intracortical targets. AB - During the early postnatal development of the rat large numbers of pyramidal tract neurons are present in layer V of the occipital cortex, but by the end of the third postnatal week the distribution of pyramidal tract neurons becomes restricted to the more rostral cortical areas. This restriction is brought about by selective collateral elimination rather than by cell death. We have found, by using retrogradely transported fluorescent dyes as either short-term or long-term markers, that occipital cortical neurons which had transiently extended pyramidal tract axons maintain subcortical axonal connections to either the superior colliculus or the pons, and, at least in the case of the corticotectal projection, that the maintained collateral is present prior to the elimination of the transient pyramidal tract collateral. Further, it appears that at no time during postnatal development do the occipital pyramidal tract neurons form either callosal or ipsilateral cortico-cortical collaterals. Thus in the early postnatal occipital cortex the neurons which project through the pyramidal tract constitute a population of cells which is separate from neurons which make cortico-cortical connections, but which largely overlaps with the population of corticotectal and corticopontine neurons. PMID- 3839152 TI - The ultrastructural identification of reticulo-hypoglossal axon terminals anterogradely labeled with horseradish peroxidase. AB - Injections of horseradish peroxidase (HRP) or wheat-germ agglutinin-horseradish peroxidase (WGA-HRP) into the nucleus reticularis parvocellularis (RPc) produced anterograde labeling of axon terminals within the hypoglossal nucleus. Based on morphological parameters of vesicle population, membrane specializations, and postsynaptic articulations, two types of axon terminals derived from neurons in RPc end on hypoglossal neurons. More than half of the terminals contained spherical vesicles (S-type), established asymmetrical membrane specializations and contacted proximal and medium-sized dendrites. The remaining labeled terminals had flattened vesicles (F-type), symmetrical membrane densities and apposed medium and small dendrites. The morphological differences expressed in the two types of terminals may reflect physiological and/or pharmacological differences in the action of RPc neurons on motoneurons in the hypoglossal nucleus. PMID- 3839151 TI - A quantitative comparison of the efficiency of orthograde axonal transport and transsynaptic transport of iodinated (125I) wheat germ agglutinin (I-WGA) and horseradish peroxidase labeled I-WGA (I-WGA-HRP) in the rat visual system. AB - A quantitative study of the orthograde axonal transport of iodinated wheat germ agglutinin (I-WGA) and I-WGA conjugated to horseradish peroxidase (I-WGA-HRP) demonstrated labeling of both the lateral geniculate nucleus and the visual cortex following intraocular injections. I-WGA was 13 times more efficient than I WGA-HRP as a marker of the primary projection from the retina to the geniculate and 3 times more efficient than I-WGA-HRP as a marker of the second order projection to the cortex. PMID- 3839153 TI - Cortical projections to superficial laminae of the dorsal horn and to the ventral horn of the spinal cord in the North American opossum. Studies using the orthograde transport of WGA-HRP. AB - The orthograde transport of horseradish peroxidase conjugated to wheat germ agglutinin (WGA-HRP) has been used to study the distribution of corticospinal axons in adult and pouch-young opossums. As predicted from the results of degeneration and autoradiographic experiments, injections of WGA-HRP into limb areas of somatic motor-sensory cortex labeled axons in the dorsal and lateral funiculi of the cervical and upper thoracic spinal cord which could be traced to dense terminal zones in laminae III-VI. In addition, we obtained evidence for the presence of a few cortical axons in the ventral white matter and for innervation of the medial part of laminae I and II, laminae VII and VIII and lamina X. A few cortical axons are even present in lamina IX. PMID- 3839154 TI - Neodymium: YAG laser posterior capsulotomy: visual acuity outcome and intraocular pressure elevation. AB - A Q-switched neodymium: YAG laser was used to perform 67 posterior capsulotomies in 67 patients. A clear visual axis was produced in all the eyes. The visual acuity improved by one or more Snellen lines in 90% of the eyes, and the final visual acuity was 20/40 (6/12) or better in 78% of the eyes. Cystoid macular edema developed in two patients after capsulotomy. Increases in intraocular pressure were most prevalent in the early postoperative period. No significant correlation was found between the acute pressure rise and the laser energy used, a previous history of glaucoma or the presence of an intraocular lens. After 6 months of follow-up none of the eyes showed a permanent pressure elevation. PMID- 3839155 TI - Sexually transmitted disease in Canada in 1983. PMID- 3839156 TI - Chemohormonal therapy and endocrine function in breast cancer patients. AB - The administration of CMFVP (cyclophosphamide, methotrexate, 5-fluorouracil, vincristine, and prednisone) results in profound alterations in hormonal profiles of premenopausal women due to a reduction in ovarian and adrenal secretion of estrogens and androgens. Cytotoxic chemotherapy results in ovarian suppression as documented by decreases in estradiol with concomitant elevations in pituitary gonadotrophins, whereas the addition of prednisone to the cytotoxic regimen results in significant decreases in androgen levels due to adrenal suppression. In postmenopausal women, CMFVP also results in significant decreases in estrogens and estrogen precursors due to suppression of adrenal steroid metabolism. Continuous low-dose prednisone administration during cytotoxic chemotherapy appears to be more effective than an intermittent high-dose schedule in achieving and sustaining adrenal suppression. However, complete elimination of adrenal steroidogenesis does not occur in all cases since measurable amounts of adrenal steroids remain in the serum throughout chemohormonal therapy. The administration of tamoxifen plus CMFVP is associated with hyperestrogenemia in younger premenopausal patients which persists until the onset of ovarian suppression. PMID- 3839157 TI - The Eastern Cooperative Oncology Group experience with cyclophosphamide, adriamycin, and 5-fluorouracil (CAF) in patients with metastatic breast cancer. AB - Data on 162 women (90 premenopausal and 72 postmenopausal) with metastatic breast cancer randomized to receive cyclophosphamide, Adriamycin (doxorubicin) and 5 fluorouracil (CAF) on two Eastern Cooperative Oncology Group (ECOG) protocols were analyzed. Twenty-three percent had complete remission; 39% had partial remission; 28% had no change; and 3% had disease progression. Of those patients in whom receptors were known, response rates were 65% for estrogen (ER)-receptor positive and 70% for ER-negative patients. The median duration of response was 11.4 months. The median survival time from the start of CAF was 20.2 months. The response rate, time to treatment failure (TTF), and median survival time were superior in the premenopausal women. These differences ceased, however, to be statistically significant in logistic models. Factors significantly associated with longer TTF and longer survival were as follows: one or two organs with metastases (TTF, P less than 0.0001; survival, P less than 0.0001); dominant site other than soft tissue (TTF, P less than 0.0001; survival, P = 0.05); and an initial good performance status (TTF, P = 0.007; survival, P = 0.02). Patients with ER-positive disease had a significantly longer median survival time (P = 0.003). PMID- 3839158 TI - Intrathecal chemoprophylaxis in the prevention of central nervous system relapse in Burkitt's lymphoma. AB - A retrospective review of patients treated for endemic Burkitt's lymphoma in Ghana was undertaken to evaluate the efficacy of intrathecal (IT) chemoprophylaxis in preventing central nervous system (CNS) relapse. Patients treated before 1974 received no IT chemoprophylaxis and those treated between 1974 and 1979 received IT methotrexate in addition to systemic chemotherapy. In patients presenting with facial disease only (Stages I-II), there was no significant difference in the frequency of CNS relapse between those receiving IT chemoprophylaxis and those not receiving any. CNS relapse was, however, significantly reduced in patients presenting with abdominal disease (Stage III) who received IT chemoprophylaxis in addition to systemic combination therapy. This was associated with an improved survival. PMID- 3839159 TI - Combined cryosurgical, chemotherapeutic, and radiotherapeutic management of T1 4N0M0 oral cavity cancers. AB - Eighty-four previously untreated patients (69 males, 15 females) with squamous carcinoma of the tongue (30 patients), floor of the mouth (30), cheek (16), and retromolar region (8) were treated using a protocol comprising cryosurgery + chemotherapy, followed by external 60Co radiotherapy. The follow-up period was at least 6 months (median, 50 months). Cryosurgery (1-2 sessions in 49 T1-2 cases; 2 4 in 35 T3-4 cases) was accompanied by a CMF (cyclophosphamide, methotrexate, 5 fluorouracil) schedule (T1-2, two courses; T3-4, three courses). Radiotherapy was given 15 to 20 days after combined cryochemotherapy (T1, 50 Gy on tumor and lymph nodes; T2-3-4, same with an extra dose of 10 to 15 Gy on the primary lesion). Complete remission was reached 4 months after treatment in 76 of 84 patients (90.5%). Survival with no evidence of disease (NED) in the 57 patients (27 T1-2, 30 T3-4) with a follow-up of more than 3 years was 59.6% for the series as a whole, 70.3% for T1-2, and 50.0% for T3-4; 78.2% for the tongue, 52.6% for the floor, 66.6% for the cheek, and 0% for the retromolar region. The picture was much the same after 5 years. Actuarial survival at 6 years was 66% in the series as a whole, 75.5% in T1-2, and 57.5% in T3-4 (tongue 86.9%, floor 56.1%, cheek 68.4%, and retromolar region 0%). It is believed that the results obtained in tumors of the tongue, floor and cheek, coupled with the conservative aspects of the protocol, make it a suitable subject for a controlled trial. PMID- 3839160 TI - Weight gain in patients receiving adjuvant chemotherapy for carcinoma of the breast. AB - Twenty-nine patients treated with adjuvant chemotherapy for carcinoma of the breast were evaluated for frequency and amount of weight gained during treatment. No difference with respect to age, menopausal status, estrogen receptor status, nodal status, biochemical parameters, or treatment regimen (CMF versus CMFVP) were seen. The gain in weight seen in some 50% of the patients treated seems to be a function of a decrease in activity level during treatment. PMID- 3839161 TI - Pulmonary lymphomas and other pulmonary lymphoid lesions. A clinicopathologic and immunologic study of 64 patients. AB - Sixty-four patients with lymphoid lesions involving the lung were separated into three groups. In 32 patients, the predominant lymphoid cell population consisted of small, mature-appearing round lymphocytes with or without plasmacytoid features. This group, designated small lymphocytic proliferation (SLP), represents a heterogeneous group of pulmonary lymphocytic lesions including small lymphocytic lymphoma, lymphocytic interstitial pneumonia, and lymphoid hyperplasia (pseudolymphoma). Thirteen SLP patients were identified as having small lymphocytic lymphoma on the basis of monoclonality, progressive disease in other sites, or both. This group was morphologically identical to the remainder of the SLP patients, except for a higher incidence of plasmacytoid features (P = 0.003) and a greater degree of mast cell infiltration (P less than 0.05). Four of these 13 patients subsequently developed an aggressive large cell lymphoma resulting in death in three patients. The median survival for all of the SLP patients has not yet been reached. Patients in whom a monoclonal cell population could be established showed a slightly worse prognosis of borderline statistical significance (P = 0.09); however, the presence of a serum monoclonal gammopathy conveyed a significantly worse prognosis (P = 0.003). The remaining two groups of patients had various forms of malignant lymphoma other than the small lymphocytic type. One group of 12 patients, designated as having presumed primary lymphoma limited to one or both lungs (PL), had a prolonged course with a median survival of 117 months. The remaining 20 patients had disseminated lymphoma also involving lung (DL); DL patients had a shorter median survival of 33 months. PMID- 3839162 TI - Rapid pulmonary dissemination in mycosis fungoides simulating pneumonia. A case report and review of the literature. AB - Mycosis fungoides is a neoplastic disease with extranodal dissemination most frequently to the lung. The roentgenographic and clinical manifestations in these patients may simulate pneumonia and delay appropriate treatment. Disseminated disease is thought to occur in the setting of involvement of the peripheral blood with the neoplastic cells. A case of rapid pulmonary involvement with mycosis fungoides which simulated pneumonia is presented in which there was no peripheral blood manifestation of the disease. PMID- 3839163 TI - Continuous infusion of spinally administered narcotics for the relief of pain due to malignant disorders. AB - The INFUSAID model #400 totally implantable drug delivery system was implanted in 17 patients for the continuous infusion of spinally administered preservative free morphine sulfate. Sixteen patients had pain of malignant origin, and one patient had pain secondary to meningomyelocele. Over time, there was a consistent mean improvement in analgesia scores ranging from 50% to 70% of the control levels for 16 of the patients with cancer-related pain. This form of pain therapy was not successful in treating the benign pain of the patient with meningomyelocele. Overall, the patients with cancer were pleased with their pain therapy, experienced few complications, and reported improved quality of life. Continuous infusion of spinally administered narcotics using a totally implantable drug delivery system such as the INFUSAID model #400 is a safe, complication-free procedure for the control of cancer-related pain. PMID- 3839164 TI - Monooxygenase induction by various xenobiotics and its influence on the rat liver microsomal metabolite profile of benz[a]anthracene. AB - Several pesticides (lindane, carbaryl, pentachlorophenol, DDT), polycyclic aromatic hydrocarbons (PAH) and heterocyclic analogues (fluoranthene, dibenz[a,h]anthracene, dibenz[a,h]acridine, indeno[1,2,3-cd]pyrene, 10 azabenzo[a]pyrene) and pharmaceuticals (diphenylhydantoin, ethinylestradiol, levonorgestrel) were tested for their potencies to induce monooxygenase activities in the rat liver by means of recording the metabolite profile of benz[a]anthracene in rat liver microsomal incubations. Some of them were found to be weak or moderate inducers, but even less efficient ones altered the benz[a]anthracene metabolite profile significantly. Only indeno [1,2,3-cd]pyrene stimulated the bay-region oxidation of benz[a]anthracene. A sex-dependent metabolism was observed in both untreated and contraceptive-pretreated Wistar rats. PMID- 3839165 TI - Abolition of L1210 clonogeneticy and G1 arrest by retinoic acid and 1,25 dihydroxyvitamin D3. AB - Results from this study demonstrate that L1210 lymphocytic leukemia cells generate tumor cell colonies in plasma clot culture, and that the cells can be maintained in suspension cultures for 3 days without a loss in viability or clonogeneticy. Additions of 10(-5)-10(-8) M retinoic acid (RA) or 1,25 dihydroxyvitamin D3 (1,25VD3) to suspension cultures had no effect on cell viability. However, there was an increase in cellular adherence, nuclear chromatin condensation and a depression of clonogenic potential by 99-25%. Flow cytometry analysis of 3-day suspension cultures revealed that both RA or 1,25VD3 promoted an accumulation of cells in G1-phase, with 1,25VD3 being the most effective. For example, treatment with 10(-5) M 1,25VD3 yielded a 76.7% G1-phase accumulation as contrasted with 36.3% for controls, and associated with this G1 shift was a 97% loss in clonogeneticy. Treatment with RA gave a slightly less G1 phase accumulation (64%), which was associated with a 74% loss in clonogeneticy. It is suggested that RA and 1,25VD3 exert their cell cycle and anti-tumor effects by modulating cellular events or metabolism, or by promoting the accumulation of a quiescent cell population. PMID- 3839166 TI - Single- and double-strand DNA breakage and repair in human lung adenocarcinoma cells exposed to etoposide and teniposide. AB - The anticancer agents 4'-demethylepipodophyllotoxin-4-(4,6-O-ethylidene-beta-D glucopyra noside (etoposide) (VP16-213) and 4'-demethylepipodophyllotoxin-4-(4,6 O-thenylidene-beta-D-gl ucopyranoside (teniposide) (VM26) produce cytotoxicity by inhibiting type II topoisomerase, resulting in an accumulation of DNA breaks. By using alkaline elution techniques to assess in vivo DNA break frequencies, we have been able to follow formation and repair of both single- and double-strand DNA breaks induced by the exposure of A549 human lung adenocarcinoma cells to VP16-213 and VM26. Single-strand DNA breaks are detectable in cells within 2 min of drug exposure, increase in frequency to a maximum after as little as 15 min of exposure, and remain near maximum levels. Double-strand breaks accumulate more slowly, reaching a maximum after 1 to 2 h, and remaining constant thereafter upon continuous exposure to drug. Single-strand DNA breaks predominate at early incubation times and low drug concentrations, whereas the ratios between single- and double-strand DNA breaks decrease at higher drug concentrations. Changing to drug-free medium after 1-h drug exposure results in rapid exponential repair of both single- and double-strand DNA breaks with a time required for repair of one half of the DNA breaks of 20 to 60 min. VM26 and VP16-213 have similar kinetics for DNA break formation and repair and similar relationships between DNA breakage and cytotoxicity, but VM26 is five to ten times more potent than VP16-213. Results indicate that DNA breakage plateaus may reflect a steady state equilibrium established between the drug and its nuclear target, possibly type II topoisomerase, and demonstrate unique properties of VP16-213- and VM26-induced DNA breakage. PMID- 3839167 TI - Phase II study of amsacrine in gastric carcinoma: a southwest oncology group study. PMID- 3839168 TI - Comparison of ophthalmic bioavailability of two dexamethasone derivatives in proprietary preparations. PMID- 3839169 TI - Nitroreductase-dependent mutagenicity of p-nitrophenylhydroxylamine and its N acetyl and N-formyl hydroxamic acids. AB - p-Nitrophenylhydroxylamine (NPH) and two hydroxamic acids derived from it were synthesized and subjected to mutagenicity testing in Salmonella typhimurium strains TA98, TA98NR, TA1538 and TA1538NR. In addition, p-dinitrobenzene (DNB), p nitroaniline (NA) and p-nitroacetanilide (AcNA) were simultaneously examined for mutagenic action against these four tester strains. NPH, its N-acetyl (AcNPH) and N-formyl (FoNPH) derivatives, and also DNB displayed strong mutagenic action to the nitroreductase-containing strains, TA98 and TA1538. NPH was the most potent chemical in this series against both of these strains, while the two hydroxamic acids AcNPH and FoNPH, and also DNB displayed approximately the same degree of mutagenicity. In the nitroreductase-deficient strains, TA98NR and TA1538NR, the mutagenicity of these four compounds was markedly reduced. The necessity for nitroreduction in order to activate these promutagens is fairly certain; however, the lack of mutagenicity of NA and AcNA towards all four tester strains made the interpretation of these data somewhat more complicated. Several possible bioactivation pathways were presented, with one mechanism in particular being proposed. This mechanism requires only that the strong electron-withdrawing nitro group be converted to an electron-donating group by bacterial nitroreductase. Such a mechanism is unique for the bioactivation of nitro aromatics by nitroreductase, since the enzymatic reduction need not produce the intermediary hydroxylamine metabolite. PMID- 3839171 TI - A simplified computer program for the performance of physiological calculations from cardiac catheterization data. PMID- 3839170 TI - Incubation with neuraminidase and affinity electrophoresis with wheat-germ lectin compared for separating and quantifying alkaline phosphatase isoenzymes in plasma. AB - Of 98 patients' specimens examined for alkaline phosphatase (EC 3.1.3.1) isoenzymes by electrophoresis on cellulose acetate membrane after incubation with neuraminidase, 50 showed only a single liver or bone isoenzyme staining band; in 15 of these, the tissue origin of the fraction could not be accurately identified from its electrophoretic location. In the remaining 48 specimens, both liver and bone fractions were identifiable, but in only 25 of these was the electrophoretic resolution sufficient to yield separate peaks on densitometry. In contrast, both liver and bone alkaline phosphatase isoenzymes were identified in 95 of the 98 specimens by affinity electrophoresis involving wheat-germ lectin, the detection of both fractions being in agreement with the results of sequential heat inactivation. The tissue origin of the enzyme bands was readily ascertainable from their consistent electrophoretic location in this medium, and in 89 of the specimens the isoenzyme fractions could be resolved into separate peaks on densitometry. We conclude that resolution of liver and bone alkaline phosphatase by incubation with neuraminidase followed by cellulose acetate electrophoresis is greatly inferior to that obtained by wheat-germ lectin affinity electrophoresis. PMID- 3839172 TI - The effects of m-AMSA on rat isolated heart. AB - m-AMSA (4'[9-acridinylamino]methansulphon-m-anisidide) is a new cytoxic agent now under clinical trial. We used the rat isolated perfused heart model in order to investigate the cardiac effects of m-AMSA. The results of the dose-response study indicate that m-AMSA has an acute moderate negative inotropic effect. The 90% effect (25% decrease in developed force compared to the control) was observed at drug concentration of 1.5 micrograms/ml. The refractory period (as measured by stimuli of twice diastolic threshold intensity) increased progressively as the drug concentration was increased (up to 2.5 micrograms/ml). Measurements of the strength-duration and strength-interval relationship showed that m-AMSA induced a significant reduction (P less than 0.005) in excitability and prolongation of refactoriness. We suggest that m-AMSA has a membranal cardiotoxic effect in addition to its known intracellular cytotoxic effect. PMID- 3839173 TI - Some cardiovascular effects of monoamine oxidase inhibitors in unanaesthetized rats. AB - The effects of four monoamine oxidase (MAO) inhibitors on the blood pressure of conscious normotensive and DOC-salt hypertensive rats were measured. Harmaline (20 mg/kg p.o.), pargyline (100 mg/kg p.o.) and tranylcypromine (10 mg/kg p.o.) all lowered blood pressure significantly in both normotensive and hypertensive rats whereas methylaplysinopsin (10 mg/kg p.o.) had no effect on blood pressure. The effects of these MAO inhibitors on blood pressure responses to serotonin, tyramine and beta-phenylethylamine were determined in conscious normotensive rats. Pargyline and tranylcypromine shifted the dose-response curves for tyramine and beta-phenylethylamine, but not serotonin, to the left, indicating inhibition of type B MAO. Harmaline and methylaplysinopsin shifted the dose-response curves for tyramine and serotonin but not beta-phenylethylamine, to the left, indicating inhibition of type A MAO. Since the four antagonists tested inhibited at least one form of MAO, and yet not all of these MAO inhibitors lowered blood pressure, we suggest that our results are consistent with the view that the hypotensive action of MAO inhibitors is not necessarily related to inhibition of MAO. PMID- 3839174 TI - Hemodynamic and respiratory effects of dezocine, ciramadol, and morphine. AB - The hemodynamic and respiratory effects of dezocine and ciramadol, two agonist antagonist analgesics, were compared with those of morphine in 30 patients undergoing diagnostic cardiac catheterization. Each subject received a single intravenous dose of dezocine (0.125 mg/kg), ciramadol (0.6 mg/kg), or morphine (0.125 mg/kg) in a double-blind fashion. Hemodynamic and respiratory parameters were measured at baseline and 5, 10, and 20 minutes after dosing. Dezocine increased the cardiac index (CI; 2.67 to 2.92 L/min/m2), stroke volume index (SVI; 43.6 to 47.6 ml/beat/m2), left ventricular stroke work index (LVSWI; 57.4 to 64.7 gm-m/m2), and pulmonary vascular resistance (PVR; 105.6 to 154.0 dynes X sec/cm5). Ciramadol increased the CI (2.78 to 3.22 L/min/m2), SVI (40.9 to 48.2 ml/beat/m2), LVSWI (51.1 to 57.9 gm-m/m2), and mean pulmonary arterial pressure (PA; 14.7 to 18.9 mm Hg). Morphine had no effect on CI, SVI, LVSWI, PA, or PVR, but it significantly lowered systolic and diastolic blood pressures. There were no appreciable changes in heart rate, left ventricular end-diastolic pressure, mean arterial pressure, or mean pulmonary capillary wedge pressure after any of the drugs. All three drugs significantly decreased systemic vascular resistance. There were no clinically significant changes in respiratory parameters. We conclude that dezocine, ciramadol, and morphine have no clinically important adverse effects on cardiac performance. PMID- 3839175 TI - Distribution-free computer methods for analysing ligand binding and enzyme mechanisms. AB - BASIC computer programs have been designed to calculate enzyme kinetic and ligand binding parameters using distribution-free methods. Statistical estimates for the parameters can be calculated, and models distinguished by the F-test. Integrated rate equations are derived for complex enzyme mechanisms. PMID- 3839176 TI - A BASIC computer program for calculation of CH50 values by probit analysis. AB - An interactive BASIC computer program for calculating CH50 values from either absorbance or % hemolysis entries is presented. The program runs on simple, self explanatory data entries and makes calculations at a 95% confidence level. PMID- 3839177 TI - The use of adjuvant chemotherapy for breast cancer in a community practice. PMID- 3839178 TI - NIH consensus development summaries: fresh-frozen plasma. Indications and risks. PMID- 3839179 TI - More precise localization of the human factor IX gene by in situ hybridization. AB - The location of the human antihemophilic Factor IX has been more specifically assigned from the region Xq27----qter to Xq26----q27 by quantitative in situ hybridization. The present study utilized a complex hybridization probe and prephotographed G-banded human chromosomes to improve analytical sensitivity and accuracy. PMID- 3839180 TI - Sucralfate suspension for mouth ulcers. PMID- 3839181 TI - [Adjuvant chemo-hormonal therapy of breast cancer. New results on mortality]. PMID- 3839182 TI - Growth velocity and plasma alkaline phosphatase activity in the preterm infant. AB - The relationship between growth and plasma alkaline phosphatase activity differs in the preterm infant when compared with older children and adolescents. 18 preterm infants were studied over the first 12 postnatal weeks; growth velocity and plasma alkaline phosphatase activity were measured serially. Plasma calcium, inorganic phosphate, the vitamin D metabolites and parathyroid hormone were assayed at a median age of 3 and 6 weeks. There was an overall significant negative correlation between growth and plasma alkaline phosphatase activity (r = -0.37; P less than 0.005); this was more marked in a group where the plasma alkaline phosphatase activity exceeded the preterm reference range. Plasma 1,25 dihydroxycholecalciferol and inorganic phosphate were lower in this group at 3 weeks but not at 6 weeks when compared with infants where plasma alkaline phosphatase activity did not exceed the reference range. There was no difference in caloric intake between the groups. In the preterm infant biochemical rickets is common and unlike older children and adolescents an increase in plasma alkaline phosphatase activity correlates with decreased rather than increased growth. PMID- 3839183 TI - Mouse salivary glands secrete a glucagon-degrading enzyme, not glucagon. AB - Salivary glands have been reported to synthetize glucagon in various animal species. We therefore studied the glucagon-like immunoreactivity (GLI) in mouse saliva. Stimulation with phenylephrine evoked a 15-fold increase of salivary GLI output. On Sephadex G-50 gel filtration, the salivary GLI was significantly larger than glicentin, the hitherto largest known glucagon-related peptide; furthermore, the immunoreactivity was not absorbable on glucagon immunoadsorbent. 125I-Labeled glucagon incubated with high GLI containing saliva, and subjected to gel filtration and immunoadsorption was degraded to low molecular weight, nonimmunoreactive moieties. Among EDTA, phenylmethylsulfonylfluoride, Pepstatin A, and N-ethylmaleimide, only N-ethylmaleimide inhibited the degradation. Renin, also found in mouse saliva, degraded the tracer but did not cochromatograph with salivary GLI. In conclusion, GLI of mouse saliva is not a peptide containing a glucagon-immunoreactive sequence but represents tracer-degrading activity, probably composed of sulfhydryl enzymes. PMID- 3839184 TI - Endoscopic papillotomy with the Nd YAG laser. AB - A case of successful endoscopic papillotomy with the Nd YAG laser in a patient with choledocholithiasis after partial stomach resection is reported. This new technique is a complementary alternative for papillotomy when high-frequency diathermy is not suitable. PMID- 3839185 TI - Isolation of mouse N-CAM-related cDNA: detection and cloning using monoclonal antibodies. AB - Clones coding for the mouse neural cell adhesion molecule (N-CAM) were isolated from a cDNA library prepared in the expression vector lambda gt 11 from mRNA extracted from a mouse neuroblastoma cell line. This library was screened with two anti-N-CAM monoclonal antibodies directed against different sites on the molecule and with rabbit anti-N-CAM serum. Two clones were identified with the first monoclonal antibody, three with the second one, none reacted with both. The relevance of these cDNA clones to N-CAM was confirmed by several observations. First, cDNA sequences detected with one monoclonal antibody cross-hybridized with those identified by the other antibody. Second, the different fusion proteins all bound the rabbit serum in addition to one monoclonal antibody. Finally, the probes hybridized to discrete mRNA species of sufficient lengths to code for the very large N-CAM polypeptides in RNA preparations from N-CAM-expressing, but not from N-CAM-negative cells. An additional mRNA species not seen in embryonic brain was expressed in adult mouse brain. Genomic blot experiments indicated that sequences corresponding to one of our probes are present only a few times in the mouse genome. PMID- 3839186 TI - Solid-phase synthesis of PYLa and isolation of its natural counterpart, PGLa [PYLa-(4-24)] from skin secretion of Xenopus laevis. AB - From the nucleotide sequence of clones isolated from a cDNA library constructed from skin of Xenopus laevis, the existence of PYLa, a peptide comprised of 24 amino acids, was predicted. This peptide was synthesized by solid-phase methods and purified to homogeneity with an overall yield of 61%. The synthetic peptide was used as reference substance to search for its natural counterpart in skin secretion of Xenopus. Two peptides were found which were very similar to PYLa except for the absence of the first three amino acids. These 21-amino-acid peptides, termed PGLa, can be generated from PYLa by cleavage after the single arginine residue present in the latter. The two forms of PGLa differ in their retention time on HPLC but have identical amino acid compositions and terminal sequences. Tryptic hydrolysis of synthetic PYLa after the single arginine yields exclusively PGLa with the shorter retention time on HPLC. The chemical difference between the two forms of PGLa is currently not known. The possible biological role of these newly discovered constituents of frog skin secretion is discussed. PMID- 3839187 TI - Molecular cloning and analysis of cDNA sequences for two ribosomal proteins from Artemia. The coordinate expression of genes for ribosomal proteins and elongation factor 1 during embryogenesis of Artemia. AB - The large subunit of eukaryotic ribosomes contains acidic phosphoproteins which are related to L7/L12 from Escherichia coli. In the brine shrimp Artemia these proteins are designated eL12 and eL12'. We have isolated cDNA clones for these proteins from a cDNA bank that was constructed by the use of size-fractionated poly(A)-rich RNA (8-10S fraction) from Artemia and a synthetic oligonucleotide as primer. Clones containing DNA sequences coding for eL12 and eL12 were characterized by hybrid-selected translation and DNA sequencing. The proteins eL12 and eL12' share an identical peptide of 22 amino acids at their carboxy termini whereas the remaining part of the protein shows little sequence homology. The nucleotide sequences show a different codon use for the amino acids in the common carboxy terminus, thereby excluding a common exon coding for this part of both proteins. Despite the differences in amino acid sequence in the major part of eL12 and eL12' the proteins have a considerable degree of homology on the basis of the distribution of hydrophobic and hydrophilic amino acids over the polypeptide chains, in agreement with a related folding and function of both proteins. Relative levels of mRNA coding for eL12, eL12' and elongation factor 1 alpha were determined during the development of Artemia from a dormant cyst to a nauplius. The data show a coordinate expression of the genes for EF-1 alpha and both ribosomal proteins, excluding a differential expression of the genes for these related ribosomal proteins during embryogenesis. Analysis of the gene copy number for eL12 and eL12' indicates the presence of a few genes for each protein. PMID- 3839188 TI - The response to initial chemotherapy as a prognostic factor in localized Ewing's sarcoma. AB - Ninety-five children with localized Ewing's sarcoma were included in a prospective cooperative study. All patients received initial chemotherapy with the purpose of early prevention of metastases and improvement of the conditions of the subsequent local therapy, radiotherapy in all cases, surgical resection in selected cases. Clinical response to initial chemotherapy was evaluated in 67 patients who had measurable soft tissue mass or functional symptoms. This response appeared highly correlated with outcome as the disease-free survival was 57.3% for the 41 good responders and 9% for the 26 bad responders (P less than 0.00001), though 23 of these bad responders reached complete remission with radiotherapy. This study also confirms the prognostic significance for survival of the site of the primary tumor on axial skeleton or on limbs. Nevertheless, this factor had no predictive value for response to chemotherapy, which thus appears to be an independent factor. PMID- 3839189 TI - Inhibitory effects of alpha, beta-methylene ATP on nerve-mediated contractions of the nictitating membrane in reserpinised cats. AB - Residual responses of the cat nictitating membrane to nerve stimulation were obtained after reserpine pretreatment (40% of controls), in spite of a pronounced reduction in noradrenaline content. The putative ATP-receptor desensitising agent alpha, beta-methylene ATP (alpha, beta-MATP), administered intraarterially through the lingual artery produced a contraction of the nictitating membrane and subsequently inhibited the residual responses evoked by sympathetic nerve stimulation in reserpinised cats. These doses of alpha, beta-MATP did not modify the contractions evoked by exogenous noradrenaline (i.a.) but antagonized the contractions of the nictitating membrane elicited by beta, gamma-methylene ATP, which is an agonist at P2 receptors. These results are compatible with a co transmitter role for ATP in the neurally mediated contractile responses of the nictitating membrane following depletion of endogenous noradrenaline stores by pretreatment with reserpine. PMID- 3839190 TI - Origin in the medial accessory olive of climbing fibres to the x and lateral c1 zones of the cat cerebellum: a combined electrophysiological/WGA-HRP investigation. AB - The climbing fibres to the x and lateral c1 zones of the anterior lobe of the cerebellum arise as branches of common stem olivary axons. Anatomical studies have shown that the c1 zone receives its climbing fibres from the dorsal accessory olive (DAO). It has, therefore, been assumed that the x-zone also receives its climbing fibres from this olivary subnucleus. The present study demonstrates that both the x-zone and the lateral part of the c1 zone in fact receive their climbing fibre input from the middle portion of the medial accessory olive (MAO) (approximate antero-postero-levels P10-13). Electrophysiological techniques were used to define the extent of these cerebellar zones and small volumes (15-50 nl) of wheat germ agglutinin horseradish peroxidase (WGA-HRP) were pressure injected into the defined zone. These small pressure injections resulted in injection sites with minimal spread to adjacent zones. The sensitive tetramethylbenzidine (TMB) reaction was used to visualize both the injection site and retrogradely labelled cells in the inferior olive. This combination of electrophysiological and neuroanatomical techniques gave extremely reproducible results. The results suggest that the zone previously named lateral c1 would be better designated cx. PMID- 3839192 TI - Physico-chemical properties of FCE 22250, 3 (piperidinomethylazinomethyl)rifamycin SV, a new long-acting rifamycin. PMID- 3839191 TI - Large layer VI cells in macaque striate cortex (Meynert cells) project to both superior colliculus and prestriate visual area V5. AB - Layer VI of macaque striate cortex contains a number of large solitary neurones called Meynert cells. It has been shown earlier that these Meynert cells project to the posterior bank of the superior temporal sulcus (area V5), but it has also been shown that they project to the superior colliculus. In retrograde fluorescent double-labelling experiments, it was found that Meynert cells represent a class of neurones which distribute divergent axon collaterals to the posterior bank of the superior temporal sulcus and to the superior colliculus, i.e. to a distant cortical and a subcortical structure. This feature appears to be unique among projecting neurones in monkey visual cortex. PMID- 3839193 TI - The elements of microcomputer systems. PMID- 3839194 TI - Conversion of a radiolabelled ecdysone precursor, 2,22,25-trideoxyecdysone, by embryonic and larval tissues of Locusta migratoria. AB - A high specific activity tritiated ecdysone precursor, 2,22,25-trideoxyecdysone, was used to probe the capacity of various embryonic and larval tissues to perform the last 3 hydroxylation steps in ecdysone biosynthesis. Embryos at early stages of development, prior to the differentiation of their endocrine glands and embryonic heads, thoraces and abdomens of later stages, were found to have the capacity to hydroxylate the precursor to ecdysone. Larval epidermis and fat body are also able to transform 2,22,25-trideoxyecdysone into ecdysone; Malpighian tubules and midgut hydroxylate the precursor at C-2 but are apparently unable to hydroxylate both at C-22 and C-25. Larval prothoracic glands convert the precursor to ecdysone at a very efficient rate, which is 1-2 magnitudes higher than that of the other tissues investigated; several data argue for the existence of a privileged sequence of hydroxylations, C-25, C-22, C-2, in the larval prothoracic glands. PMID- 3839195 TI - The spatial distribution of maternal mRNA is determined by a cortical cytoskeletal domain in Chaetopterus eggs. AB - Messenger RNA molecules are localized in the cortical region of eggs and unevenly segregated to the embryonic cells during early development of the annelid Chaetopterus. The egg cortex is enriched in two organelles, ectoplasmic spherules and associated structures, which are similar in appearance to nuage. The physical basis of cortical mRNA localization was examined in stratified eggs and in eggs extracted with the nonionic detergent Nonidet P-40 (NP-40). The cortical organelles were displaced to the most centrifugal zone of stratified eggs. In situ hybridization with poly(U) or cloned DNA probes showed that a large proportion of the poly(A)+RNA, histone mRNA, and actin mRNA molecules was also displaced to the centrifugal zone. Extraction with NP-40 revealed a detergent insoluble cytoskeletal domain (CD) in the egg cortex which contained the remnants of ectoplasmic spherules and nuage embedded in a fibrous network. Although most of the total protein and RNA was extracted by NP-40, a large proportion of the poly(A)+RNA, histone mRNA, and actin mRNA molecules was retained in the CD. In situ hybridization of stratified eggs extracted with NP-40 indicated that the CD, with its associated organelles and mRNA molecules, is displaced to the centrifugal zone as a unit. The results suggest that the tenacious association of mRNA molecules with the cortical CD may be responsible for maternal mRNA localization during early development. PMID- 3839197 TI - [Postoperative ileus: from whom to expect progress?]. PMID- 3839196 TI - [Sarcoidosis and autoimmune thyropathy. Study of 4 cases]. PMID- 3839198 TI - Isolation of a human tissue-type plasminogen-activator genomic DNA clone and its expression in mouse L cells. AB - We have isolated a cDNA clone corresponding to a substantial portion of the human tissue-type plasminogen activator (t-PA) protein. It encodes almost all of the protein B chain and part of the 3' untranslated region. We have used this clone to screen bacteriophage lambda and cosmid libraries of human genomic DNA. Several related genomic clones were isolated. One of these, a cosmid clone, carried approx. 40 kb of human DNA. Mapping experiments indicate that the region containing the protein-coding exons is approx. 20 kb in length. The cosmid, containing the t-PA gene and the aminoglycosyl-3'-phosphotransferase dominant selection marker, was introduced into mouse L cells. Approximately half of the transformants were shown to produce human t-PA. We demonstrated that the fibrinolytic t-PA activity could be specifically quenched by anti-t-PA antibody and that the recombinant t-PA was of similar size (by SDS-polyacrylamide gel electrophoresis) to the t-PA produced by the human Bowes melanoma cell line. Our results suggest that the cosmid clone carries the whole t-PA coding region together with the regulatory elements necessary for its expression. PMID- 3839199 TI - Characterization of two class I major histocompatibility rat cDNA clones, one of which contains a premature termination codon. AB - A cDNA clone that shares considerable homology with mRNA for class-I major histocompatibility (MHC) antigens has been isolated from a cDNA library constructed from an insulin-secreting tumor of the NEDH rat (RIN). Although there is very strong homology between the third extracellular domain of this gene, and other class-I antigen genes, a stop codon was noticed at the junction between the external and transmembrane regions of its protein. Thus, this gene codes for a truncated class-I antigen that lacks both transmembrane and cytoplasmic domains but has hydrophilic amino acids towards its C-terminus and therefore resembles a soluble protein. This gene was found to be transcribed at significant levels in the rat testis and an insulin-secreting tumor, but transcription was negligible in liver and kidney. The partial nucleotide sequence of this gene in a Wistar rat genomic clone indicates that the cDNA clone is represented in the rat genome complete with premature termination codon, thus eliminating the possibility of artifactual origins for the clone. PMID- 3839200 TI - Growth, and tooth growth/wear curves derived from an asymptotic function: y = alpha + beta rho x. AB - From the asymptotic function, y = alpha + beta rho x, a computer program to describe growth was developed, using a series of iterative fittings to provide a progressively improved regression line and value for rho (the growth factor). The function was further developed to describe the entire process of tooth development from eruption and growth through to wear, incorporating both growth and wear factors in one relationship, y = alpha 1 + beta 1 rho x + gamma x. A 4 X 4 covariance matrix was evolved to suit this and a computer program developed to execute the curve fitting. PMID- 3839201 TI - [Reduction of vital capacity by combined adjuvant chemotherapy (CMF) for breast cancer]. PMID- 3839202 TI - Highlights in the history of saccharin toxicology. AB - Saccharin has successfully survived a half century of scrutiny of its safety. Experience during almost 60 years of common use in foods, as well as several rat feeding studies including that conducted by the FDA, established its GRAS status under the 1958 Food Additives Amendment. Many chronic one-generation and three (unvalidated) two-generation rat studies subsequently conducted by regulatory and independent agencies in the USA and elsewhere have been interpreted by expert committees, especially those of the National Academy of Sciences/National Research Council, as supportive of saccharin's non-carcinogenicity under possible conditions of use. Not convinced of saccharin's safety, because of the (inconsistent) evidence of bladder tumours in saccharin-treated F1 male rats, the FDA proposed a ban on its use as a food additive. This ban has been temporarily postponed by Congressional moratoria, while better designed and executed studies into the mode of action of this unmetabolized non-genotoxic substance are in progress. PMID- 3839203 TI - The urinary excretion of ionized and non-ionized calcium by rats treated with 1.25-dihydroxycholecalciferol. AB - The administration of 1,25-dihydroxycholecalciferol to rats increased their calciuresis as a power function of the dose. Up to 95% of the urinary calcium was excreted as a non-ionized complex, together with equimolar amounts of citrate. The stoichiometry between calcium and citrate, observed at all dose levels, suggests that citrate metabolism is coordinated with the mobilization of calcium. PMID- 3839204 TI - Cholinergic-muscarinic receptors do not mediate growth hormone release in response to baclofen, a gamma-aminobutyric acid agonist, in humans. PMID- 3839205 TI - The medical evaluation of sexual abuse in children. AB - A number of questions must be addressed in order to effectively manage cases of sexual abuse in children. The author discusses when sexual abuse should be suspected, why physicians are often reluctant to manage such cases, who should perform the medical examination, the possibility of children contracting various sexually transmitted diseases, how to distinquish sexual fantasy from actual abuse, and reasons that a child might delay or retract a report of abuse. PMID- 3839206 TI - Sexually transmitted diseases: extract from the annual report of the Chief Medical Officer of the Department of Health and Social Security for the year 1983. PMID- 3839207 TI - Placenta and milk as excretory routes of lipophilic pesticides in women. AB - Age, diet and ethnic-dependent excretion of chlorinated pesticides through placenta and milk was studied in women from the general population around Lucknow in India by using gas-liquid chromatography equipped with an electron-capture detector (3H+). Pesticidal contaminants in both placenta and milk were 1,1,1 trichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDT), its metabolites 1,1-dichloro 2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE) and 1,1-dichloro-2,2-bis(p chlorophenyl)ethane (p,p'-DDD), alpha, beta, gamma - isomers of benzene hexachloride (BHC) and aldrin. The study revealed higher excretion of pesticides through the placentas of older and non-vegetarian women than younger and vegetarian women. There was higher excretion of total DDT in rural than in urban women while a reverse trend was found in the case of total BHC in two ethnic groups. Similarly, age and dietary habits influenced the excretion of these pesticides in milk. Women undergoing premature delivery and stillbirths were found to excrete more DDT in their milk than those undergoing full-term normal delivery. PMID- 3839209 TI - A program for point and interval calculation of odds ratios and attributable risks from unmatched case-control data. AB - An epidemiological investigation may be designed to collect data and analyse associations between many risk factors and/or many disease groups. A FORTRAN program has been developed to calculate point and interval estimates of odds ratios and attributable risks from stratified, unmatched case-control data for any number of disease/risk-factor combinations. For each disease/risk-factor association, this program can be used to estimate odds ratios by level of exposure and by latency. All output is time- and date-stamped with labels and titles to increase readability and provide useful documentation of study results. All data management is performed using the SPSS package, giving the program a great deal of flexibility, at the same time making it easy to implement and to use. The program has been installed on several mainframes. PMID- 3839208 TI - Effects of natural or synthetic microbial adjuvants on induction of autoimmune thyroiditis. AB - Natural and synthetic adjuvants of microbial origin were compared for their capacity to potentiate the induction of experimental autoimmune thyroiditis (EAT) with the autoantigen mouse thyroglobulin (MTg). Regardless of the immunomodulator used, severe thyroiditis was observed only in EAT-susceptible strains of the k haplotype and not in EAT-resistant strains of the d haplotype. Compared to phenol extracted lipopolysaccharide, a potent adjuvant for enhancing EAT induction, phthalyl-substituted, detoxified lipopolysaccharide, even at doses 15- to 50-fold greater, led to only low anti-mouse thyroglobulin titers and mild thyroid infiltration. The synthetic adjuvant N-acetylmuramyl-L-alanyl-D-isoglutamine (MDP) and three of its analogs, N-acetylmuramyl-L-alanyl-D-isoglutamine-L-alanyl D-glycerol mycolate (MDP-L-Ala-Glyc-Myc), N-acetylmuramyl-L-alanyl-D-glutamyl (decyl)methyl ester [MDP(decyl)methyl], and N-acetylmuramyl-L-alanyl-D-glutamine alpha n-butyl ester [MDP-(Gln)-OnBu], designated murabutide, were tested in incomplete Freund adjuvant or in saline. In incomplete Freund adjuvant, MDP-L-Ala Glyc-Myc was inefficient in inducing EAT, murabutide induced very mild involvement, and MDP and, more so, MDP(decyl)methyl were active but to a lesser degree than CFA. When saline was used, low levels of thyroid infiltration were observed in a few of the MDP-treated animals in only one experiment, whereas no lesions were observed when murabutide was used. PMID- 3839210 TI - Development of a program package for modelling biochemical systems. AB - The development of a program for the identification of a model including up to 15 compartments is presented. The identification of the model parameters with this program package is based upon the improved Gauss Marquardt algorithm. This program, implemented on a microcomputer (Data General Eclipse 64 K RAM), uses a calculation and automatic generation of a partial derivative routine. Thus, starting from the differential equations of the model correctly written, there is no longer any risk of error. PMID- 3839211 TI - A microcomputer method for designing optimal experiments for estimating enzyme kinetic parameters. AB - A computer program, written in BASIC, for designing optimal experiments with the aim of evaluating estimates of the parameters for any enzyme kinetic model is given. This computer program can be run on any microcomputer with less than 32 Kbytes of random access memory. The program uses the termed D-optimization design criterion, which minimizes the determinant of the variance-covariance matrix. The user only supplies the rate equation, the maximum and minimum concentrations of substrates and inhibitors, the weighting pattern, and the best possible values of the parameters. The computer supplies the optimal substrate and inhibitor concentrations (one for each parameter), for estimating the parameter values, and the determinant of the variance-covariance matrix. Likewise, the microcomputer supplies the eigenvalues and eigenvectors of information and redundancy matrices, the sensitivity and the global redundancy. PMID- 3839212 TI - Optimal dosage regimen calculation program based on the remaining drug concentrations in plasma. AB - A program is presented to calculate the optimal drug doses to make the plasma drug concentration at a constant level throughout the therapy. The package requires data input of experimentally determined pharmacokinetic parameters such as As and ramdas, and provides the optimal intravenous drug doses at every minute. This program is applicable to any drug in a given individual, provided that the single-dose plasma concentration curve equation of the first dose of the therapy in this individual is known. PMID- 3839213 TI - A simple computer model for albumin and water distribution and flux in man. AB - The physiological and mathematical basis for a simple computer model of albumin and water distribution in man is described. The factors which are important in determining albumin and water flux are discussed and some clinical implications are considered. PMID- 3839214 TI - The binding of ConA and other lectins to surface glycoproteins: a comparison of a subcutaneous tumour and its liver metastases. AB - The glycoprotein composition of a transplantable subcutaneous lymphosarcoma (1 degree) and its liver metastases (2 degrees) have been examined in Triton X-100 extracts obtained from tissue, single cells and membrane preparations by using electrophoresis and treatment with radio-labelled lectins. No consistent differences could be detected in the electrophoretic patterns of 1 degree and 2 degrees tumour using RCA-60 or gorse. Small differences were detected using Concanavalin A; all but one of these were eliminated as being due to differential host contamination. A minor band of 178,000 daltons molecular weight was found in 1 degree tissue, cells and membranes that was absent in extracts from 2 degrees tumour. Percoll density gradient separations suggested that this glycoprotein belonged to a small subpopulation of cells; their identity remains uncertain. The band was still detected when tumour was grown from direct liver implants, but it disappeared when this growth metastasized to another lobe. The results provide evidence that metastasis can be accompanied by a very subtle change in the tumour glycoprotein profile. Such a change may have important consequences for host/tumour interactions and subsequent metastatic spread. PMID- 3839215 TI - Neodymium:YAG laser iridotomy in the cynomolgus monkey. AB - The histologic effects of various Neodymium:YAG laser energy levels were evaluated after iridotomy formation in cynomolgus monkey eyes. Scanning election microscopy of the corneal endothelium above the treated areas revealed no significant cell loss or pleomorphism when compared to the adjacent untreated areas. Light and phase contrast microscopy demonstrated closure of the iridotomies in most cases by a bridge of iris pigment epithelium. In several specimens, stromal tissue and pigment laden cells were present over the attenuated iris pigment epithelium. There were four lens opacities with rupture of the anterior lens capsule and anterior epithelial cell hyperplasia in one. No damage was apparent in the trabecular meshwork or retina with light microscopy or fluorescein angiography. PMID- 3839216 TI - Adolescents and sexually transmitted diseases: an expanding problem. Introduction. PMID- 3839217 TI - Adolescence and sexual behavior. Trends and implications for STD. AB - Teenage sexual activity became more common in the 1970s, and that trend may continue in this decade. Teenagers have thus established themselves as an important component of the population at risk of sexually transmitted disease (STD). Adolescents exhibit many of the same features of sexual behavior seen in the adult population. However, adolescents' abilities to recognize, evaluate symptoms of, and seek treatment for STD are generally limited. Many teenagers are hesitant to admit that they have begun sexual activity or that something like STD could happen to them. The combination of these factors with generally liberalizing trends in sexual behavior in the last decade has elevated the risk of STD for teenagers and made the job of adolescent health care providers more difficult. PMID- 3839218 TI - Postponing sexual involvement among adolescents. An alternative approach to prevention of sexually transmitted diseases. AB - Over 1,000 teenagers participated in the field test of an educational series designed to help them resist the social and peer pressures that can lead to early sexual involvement. A companion program for parents was designed to help adults better understand the pressures experienced by adolescents and aid the parents in reinforcing the information given to their children. Initial findings indicate skill building may be an important addition to the knowledge-based curriculum commonly used to prevent the spread of sexually transmitted disease among teenagers today. PMID- 3839219 TI - Medical problems of the homosexual adolescent. AB - Physicians treating adolescents should take a complete sexual history, including sexual orientation and practices, to determine whether their patients are homosexually active. Lesbians are at very low risk for sexually transmitted diseases, but they do have other health concerns. Four general groups of conditions may be encountered in homosexually active men: classical sexually transmitted diseases (gonorrhea, infections with Chlamydia trachomatis, syphilis, herpes simplex infections, genital warts, pubic lice, scabies); enteric diseases (infections with Shigella species, Campylobacter jejuni, Entamoeba histolytica, Giardia lamblia, hepatitis A, hepatitis B, hepatitis non-A, non-B, and cytomegalovirus); trauma (fecal incontinence, hemorrhoids, anal fissure, foreign bodies, rectosigmoid tears, allergic proctitis, penile edema, chemical sinusitis, inhaled nitrite burns, and sexual assault of the male patient); and the acquired immunodeficiency syndrome (AIDS). Clinicians can assist homosexual teenagers by understanding their special health needs, by counseling them about safe sexual practices, and by accepting their relationships nonjudgmentally. PMID- 3839220 TI - Adolescent misadventures with urethritis and cervicitis. AB - Inflammation of the cervix and urethra in adolescents is primarily due to infection by sexually transmitted disease (STD) organisms. These organisms are most commonly Chlamydia trachomatis, Neisseria gonorrhoeae, Urea-plasma urealyticum, and herpes simplex virus. The frequency and seriousness of these infections is, in part, due to developmental, behavioral, and biological changes which put adolescents at special risk for acquisition of these syndromes. Medical knowledge is now sufficient to effectively recognize and treat these STD syndromes. What is further needed is the personal and institutional determination, adaptability, and resources to apply present knowledge among adolescents. It is among these teenagers that the personal and societal costs of STDs are the greatest. PMID- 3839221 TI - Behavioral profiles of dog breeds. AB - Breed behavior profiles were obtained by a method that was quantitative and free of personal biases. The profiles concerned 13 traits, eg, excitability, snapping at children, watchdog barking, and affection demand, which are of interest to people wanting dogs as pets. Authorities for the development of the profiles were 48 small animal veterinarians and 48 obedience judges, randomly selected from directories so as to represent equally men and women, and eastern, central, and western geographic regions of the United States. Each authority was asked to rank on each of the behavioral traits a list of 7 breeds chosen randomly from a list of 56 breeds. The data were analyzed in a custom-designed computer program that pooled the data and then ranked all 56 breeds on the basis of the 13 traits. The results indicated that some behavioral traits discriminate between breeds better than others. An examination of sample profiles indicated the feasibility of developing a statistically meaningful behavioral profile that integrates comparative rankings of several authorities balanced as to representation of geographic location, sex, and type of experience with dogs. PMID- 3839222 TI - Alahopcin, a new dipeptide antibiotic produced by Streptomyces albulus subsp. ochragerus subsp. nov. AB - An actinomycete strain No. B-52653 was found to produce an antibiotic selectively active against the in vitro antibiotic resistant mutant of Staphylococcus aureus. Based on taxonomic studies, the name Streptomyces albulus subsp. ochragerus subsp. nov. is proposed for the strain. The microorganism produced two kinds of antibiotics; one identical with gougerotin, the other an amphoteric water soluble dipeptide containing L-alanine. The latter has the molecular formula C9H15N3O6 and is named alahopcin. It has a broad antibacterial spectrum and a synergistic effect with some other antibiotics against some antibiotic resistant staphylococci. Alahopcin has a low toxicity and was effective against experimental infections in mice caused by Staphylococcus aureus. PMID- 3839223 TI - Structure of alahopcin (nourseimycin), a new dipeptide antibiotic. AB - The structure of alahopcin (nourseimycin) (1), a new dipeptide antibiotic isolated from Streptomyces, has been established to be (2S, 3R)-2-[(L alanyl)amino]-4-formyl-3-(hydroxy-aminocarbonyl)butyric acid. 1 exists in two cyclic hemiacetal type tautomers formed by intramolecular ring closure between the hydroxyamino group and the formyl group in aqueous solution. The structure of the new weakly acidic amino acid (2), a constituent of 1, is revealed to be (2S, 3R)-2-amino-4-formyl-3-(hydroxyaminocarbonyl)butyric acid, and 2 also exists in two cyclic hemiacetal type tautomers in aqueous solution. PMID- 3839224 TI - Dihydromonacolin L and monacolin X, new metabolites which inhibit cholesterol biosynthesis. AB - Dihydromonacolin L and monacolin X those are structurally related to monacolin K, a potent inhibitor of cholesterol biosynthesis, were isolated from cultures of a mutant of Monascus ruber. The structures of these two metabolites were determined by a combination of physical techniques. Data for dihydromonacolin L and monacolin X as inhibitors of hydroxymethylglutaryl-CoA reductase and sterol biosynthesis in vitro are also given. PMID- 3839225 TI - Microbial phosphorylation of the OA-6129 group of carbapenem compounds. AB - The OA-6129 group of carbapenem antibiotics were phosphorylated with ATP by Brevibacterium ammoniagenes at the primary hydroxyl group of the C-3 pantetheinyl side chain. The phosphorylation resulted in the reduced antimicrobial activity against some Gram-positive bacteria, and the improved activity against some Gram negative microbes. The increased resistance of the OA-6129 carbapenems due to phosphorylation was significant to mouse renal dehydropeptidase and moderate to the human enzyme. OA-6129A and B2 phosphates were found to be unsusceptible to A933 acylase, while OA-6129A and B2 were depantothenylated. PMID- 3839226 TI - KY-109, a new bifunctional pro-drug of a cephalosporin. Chemistry, physico chemical and biological properties. AB - (5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 7-[D-O-(L-alanyl)mandelamido]-3-[[(5 methyl-1,3, 4-thiadiazol-2-yl)thio]methyl]-3-cephem-4-carboxylate hydrochloride (KY-109) was synthesized as a bifunctional pro-drug designed to improve the oral absorption of the parent drug (KY-087), a cephalosporin similar in activity to cefamandole. The pro-drug was found to possess the desired factors for an orally active pro-drug, that is, appropriate solubility, lipophilicity and ease hydrolysis into the parent drug. As predicted from these factors, the pro-drug when administered orally to rats was well absorbed, and gave high blood levels of the parent drug. PMID- 3839227 TI - Monacolins J and L, new inhibitors of cholesterol biosynthesis produced by Monascus ruber. PMID- 3839228 TI - Chloromonilicin, a new antifungal metabolite produced by Monilinia fructicola. PMID- 3839229 TI - Novel potentiators of beta-lactam antibiotics. Isolation of SQ28,504 and SQ28,546 from Chromobacterium violaceum. AB - Two novel compounds, SQ28,504 and SQ28,546 are produced by Chromobacterium violaceum. These compounds enhance the antibacterial activity of beta-lactam antibiotics against Gram-negative organisms. Both SQ28,504 and SQ28,546 induce morphological changes in the presence of beta-lactam antibiotics. Only SQ28,546 has weak antimicrobial activity against several Gram-negative organisms. PMID- 3839231 TI - Fujianmycins A and B, new benz[a]anthraquinone antibiotics from a Streptomyces species. PMID- 3839230 TI - Chaetiacandin, a novel papulacandin. I. Fermentation, isolation and characterization. AB - Chaetiacandin, a new anti-yeast antibiotic structurally related to papulacandin, was isolated from a culture of Monochaetia dimorphospora. The fermentation, isolation, and physico-chemical and biological properties are reported. The molecular formula of this compound was determined as C43H60O16. PMID- 3839232 TI - Isolation of chitinovorin D. PMID- 3839233 TI - LL-BM726: a novel dipeptide antibiotic. PMID- 3839234 TI - Chaetiacandin, a novel papulacandin. II. Structure determination. PMID- 3839235 TI - Responses of cochlear nucleus units to electrical stimulation through a cochlear prosthesis: channel interaction. AB - The responses of 39 single units in the ventral cochlear nucleus of acute anesthetized guinea-pigs were studied with continuous electrical stimuli presented through a dual-channel implant in the scala tympani. Implants had four electrodes placed along the axis of the cochlea with 1 mm separations. With a specific pair (either apical or basal) of stimulating electrodes, about half of the units responded when current was flowing apically, while the rest responded to current in the opposite direction. No obvious relation existed between the effective polarity of the basal and apical pairs of electrodes. Two response types were observed while stimulating through both pairs simultaneously. Seventy nine percent of the units responded to the sum of the current waveforms presented through the two pairs. Twenty-one percent responded to the difference between the waveforms. Both types of responses were observed for suprathreshold as well as for some intensities of stimulation that alone were subthreshold. The type of response was not dependent on the absolute threshold or threshold difference between the two pairs. For equal peak-intensities of stimuli, two-channel stimulation evoked larger responses than single-channel stimulation, provided the two channels were in their effective polarities. Responses to dual-channel stimulation were consistently larger than the summed responses to the two individual single-channel stimuli. The observed responses to the dual-channel stimulation indicate that the adequate stimulus was determined by the linear combination of fields produced by the individual channels in the vicinity of the stimulating electrodes before the auditory nerve is stimulated, and that excitation takes place in a spatially restricted area of the auditory nerve. PMID- 3839236 TI - The single-dose pharmacokinetics of 5-epi-sisomicin (Sch 22591) in human volunteers. AB - 5-epi-sisomicin was given as a single 1 mg/kg intramuscular injection to six adult male volunteers. No adverse effects were observed and the pharmacology was very similar to that of sisomicin. The extended spectrum of 5-epi-sisomicin and its enhanced antipseudomonal activity prompt further clinical evaluation of this agent. PMID- 3839237 TI - Identification of canine pulmonary surfactant-associated glycoprotein A precursors. AB - Surfactant-associated glycoproteins A were identified by two-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis of crude surfactant from canine alveolar lavage: an unglycosylated form (protein A1), 27,000-28,000 daltons; glycoprotein A2, 32,000-34,000 daltons; and glycoprotein A3, 37,000 38,000 daltons; pH at isoelectric point (pI) 4.5-5.0. Glycoproteins A2 and A3 were electroeluted and used to prepare a monospecific antiserum that identified proteins A1, A2, and A3 in immunoblots of crude surfactant obtained from dog lung lavage. This antiserum precipitated several proteins from in vitro translated canine lung poly(A)+ mRNA; proteins of 27,000 daltons, pI 5.0, and 28,000 daltons, pI 4.8-5.0, which precisely comigrated with proteins A1 from canine surfactant. Cotranslational processing of the primary translation products by canine pancreatic microsomal membranes resulted in larger proteins of 31,000 34,000 daltons, pI 4.8-5.0. Treatment of these processed forms of glycoprotein A with endoglycosidase F, to remove N-linked carbohydrate, resulted in proteins of 27,000-28,000 daltons which precisely comigrated with surfactant protein A1. These observations demonstrate that the polypeptide precursors to the glycoproteins A complex are extensively modified by addition of asparagine N linked complex carbohydrate and are subsequently secreted as glycoproteins A2 and A3. PMID- 3839238 TI - Characterization of the lacto series of gangliosides, especially of disialo-lacto N-norhexaosyl ceramide isolated from adult bovine nasal cartilage. AB - A disialosylganglioside was isolated from adult bovine nasal cartilage, and its structure was determined by analysis of sugar composition, permethylation analysis, exoglycosidase treatment, and mild acid hydrolysis. The structure of this ganglioside was identified as disialo-lacto-N-norhexaosyl ceramide, NeuNAc(alpha 2-8)NeuNAc-(alpha 2-3)Gal(beta 1-4)GlcNAc(beta 1-3)Gal(beta 1 4)GlcNAc(beta 1-3)Gal(1-4)Glc(1-1)Cer. Furthermore, we also isolated from this cartilage gangliosides whose structures were presumed to be monosialo-lacto-N norhexaosyl ceramide, and mono- and disialo-lacto-N-neotetraosyl ceramide. The major fatty acids of the four gangliosides isolated were palmitic, stearic, behenic and lignoceric acids. The predominant long chain bases were sphingenine, heptadecasphingenine and hexadecasphingenine. PMID- 3839239 TI - The effect of myosin phosphorylation on the contractile properties of skinned rabbit skeletal muscle fibers. AB - We have studied the effect of myosin P-light chain phosphorylation on the isometric tension generated by skinned fibers from rabbit psoas muscle at 0.6 and 10 microM Ca2+. At the lower Ca2+ concentration, which produced 10-20% of the maximal isometric tension obtained at 10 microM Ca2+, addition of purified myosin light chain resulted in a 50% increase in isometric tension which correlated with an increase in P-light chain phosphorylation from 0.10 to 0.80 mol of phosphate/mol of P-light chain. Addition of a phosphoprotein phosphatase reversed the isometric tension response and dephosphorylated P-light chain. At the higher Ca2+ concentration, P-light chain phosphorylation was found to have little effect on isometric tension. Fibers prepared and stored at -20 degrees C in a buffer containing MgATP, KF, and potassium phosphate incorporated 0.80 mol of phosphate/mol of P-light chain. Addition of phosphoprotein phosphatase to these fibers incubated at 0.6 microM Ca2+ caused a reduction in isometric tension and dephosphorylation of the P-light chain. There was no difference before and after phosphorylation of P-light chain in the normalized force-velocity relationship for fibers at the lower Ca2+ concentration, and the extrapolated maximum shortening velocity was 2.2 fiber lengths/s. Our results suggest that in vertebrate skeletal muscle, P-light chain phosphorylation increases the force level at submaximal Ca2+ concentrations, probably by affecting the interaction between the myosin cross-bridge and the thin filament. PMID- 3839240 TI - Rat transthyretin (prealbumin). Molecular cloning, nucleotide sequence, and gene expression in liver and brain. AB - Transthyretin cDNA was isolated from a rat liver cDNA library. Analysis of the nucleotide sequence revealed a signal peptide-like sequence preceding a section coding for a full length subunit and an untranslated sequence at the 3' end. The deduced primary structure of rat transthyretin was compared with that of human transthyretin. It was highly conserved at the binding sites for thyroxine and the interfaces and core regions of the subunits. The cDNA for transthyretin was used to measure mRNA levels by hybridization. During acute inflammation, the amount of transthyretin mRNA in liver decreased (reaching a minimum of 25% of the normal level 36 h after inducing inflammation), suggesting regulation of transthyretin synthesis at the mRNA level. Transthyretin mRNA was found only in the liver and in the choroid plexus, but not in other parts of the central nervous system nor in the adrenal glands, kidney, spleen, testes, heart, lung, intestine, and ovaries. One gram of choroid plexus contained about 25 times larger amounts of transthyretin mRNA than 1 g of liver. By synthesizing an important hormone carrier protein, the choroid plexus may be an important link in the chemical communication between the central nervous system and the bloodstream. PMID- 3839241 TI - The myosin alkali light chains of mouse ventricular and slow skeletal muscle are indistinguishable and are encoded by the same gene. AB - We have isolated a cDNA recombinant plasmid (pA29) identified as encoding part of the ventricular muscle myosin light chain MLC1v. This cDNA contains a 300-base pair fragment which under conditions of moderate stringency shows specific hybridization to MLC1v mRNA with no detectable cross-hybridization with the mRNAs encoding the fast skeletal muscle isoforms MLC1F and MLC3F, or the atrial muscle isoform MLC1A. Under these conditions hybridization is seen with an abundant mRNA present in slow skeletal muscle (soleus) which is indistinguishable from ventricular MLC1V mRNA on the basis of size and of thermal stability of hybrids formed with plasmid pA29. The mouse MLC1V and MLC1S proteins are found to co migrate on two-dimensional gels. We therefore conclude that these isoforms are the same and are encoded by the same mRNA. Analysis of mouse DNA has identified a single region of the genome which hybridizes to this same fragment of pA29. This region has been isolated in a recombinant phage and has been shown to contain a single gene showing homology with MLC1V mRNA by R-loop analysis. We therefore conclude that MLC1V and MLC1S are encoded by a single gene. The pattern of segregation of a restriction fragment length polymorphism identified for this gene between Mus musculus and Mus spretus has been followed in an F1 backcross between these two mouse species. The results show the MLC1V/MLC1S gene to be closely linked to a marker at the distal end of mouse chromosome 9. PMID- 3839242 TI - Activity of a novel carotenoid analog, 4,4'-(3,7,12,16-tetramethyl 1,3,5,7,9,11,13,15,17-octadecanonaen -1,18- diyl) bis(1-ethylpyridinium) dibromide (Y-18598) on mouse leukemia P388. AB - 4,4'-(3,7,12,16-Tetramethyl-1,3,5,7,9,11,13,15,17-octadecanonaen-1 ,18-diyl) bis (1-ethylpyridinium) dibromide (Y-18598), a novel carotenoid analog with 1 ethylpyridine rings as terminal groups, was found to be effective against P388 leukemia which was refractory to amphotericin B and retinoic acid used as representatives of polyene-containing drugs. The life span of leukemic mice was increased by 56% over the control following administration of 2.5 mg/kg on days 1 5. Among these polyene-containing compounds, Y-18598 was the most highly cytotoxic to P388 leukemia cells in vitro. PMID- 3839243 TI - Increased content of neuropeptide Y in human pheochromocytoma cell cultures. AB - Cells from three human pheochromocytomas grown in monolayer culture for 21 days contained markedly greater amounts of neuropeptide Y (NPY) than freshly dissociated cells from the same tumors. The content of NPY did not consistently correlate with the extent of neurite outgrowth in the cultures and was not further increased in the presence of nerve growth factor. The content of NPY was decreased in the presence of 10(-5) M dexamethasone in two cultures. The findings suggest that human pheochromocytoma cultures may be useful in studies of cellular and molecular mechanisms regulating NPY production, and that these mechanisms may differ somewhat from those regulating production of other regulatory peptides in cultures of the same tumors. PMID- 3839244 TI - Environmental iodine intake affects the response to methimazole in patients with diffuse toxic goiter. AB - The response to methimazole [1-methyl-2-mercaptoimidazole (MMI)] therapy was evaluated in 18 patients with diffuse toxic goiter residing in an area of iodine deficiency (Tehran) and in 18 patients residing in an area of iodine sufficiency (Boston). The mean free T4 index (FT4I) decreased from 22.9 +/- 4.8 (+/- SD) to 4.9 +/- 4.3 in Tehran and from 23.8 +/- 5.2 to 17.0 +/- 4.1 in Boston after 4 weeks of MMI administration (10 mg, three times daily). The mean free T3 index (FT3I) decreased from 489 +/- 124 to 117 +/- 58 in Tehran and from 512 +/- 250 to 368 +/- 152 in Boston. In patients residing in Tehran, the FT4I was normal in 9 (less than 6.3 in 6), above normal in 1, and subnormal in 8 (44%) after 4 weeks of MMI treatment. In 4 of 8 patients with subnormal FT4I, serum TSH was also above normal, and clinical findings of hypothyroidism were evident. MMI (10 mg, twice daily) was then given to 15 additional patients with diffuse toxic goiter in Tehran. Mean FT4I values were 22.7 +/- 6.8, 12.1 +/- 2.5, 10.8 +/- 2.8, and 6.0 +/- 4.3 before and 8, 14, and 28 days after treatment, respectively. Corresponding mean FT3I values were 415 +/- 90, 196 +/- 36, 162 +/- 44, and 117 +/- 46. At 28 days, FT4I was subnormal in 7 (46%) patients, of whom 1 had increased TSH. These results indicate that treatment with recommended doses of MMI rapidly causes hypothyroidism in patients residing in Tehran, an area of iodine deficiency. Furthermore, they support the hypothesis that the dosage of thionamide compounds and the duration of therapy with the initial doses necessary to induce euthyroidism may vary in various parts of the world. PMID- 3839246 TI - AEC syndrome: ankyloblepharon, ectodermal defects, and cleft lip and palate. Report of two cases. AB - An unusual syndrome of ectodermal dysplasia was seen in a young woman and her son. The constellation of findings included hair, nail, and teeth dystrophies, as well as hypohidrosis. The patients appear to exhibit the previously described syndrome of ankyloblepharon, ectodermal defects, and clefting of the lip and palate. Their cases are the eighth and ninth cases reported in the literature. PMID- 3839245 TI - Healing of bone disease in X-linked hypophosphatemic rickets/osteomalacia. Induction and maintenance with phosphorus and calcitriol. AB - Although conventional therapy (pharmacologic doses of vitamin D and phosphorus supplementation) is usually successful in healing the rachitic bone lesion in patients with X-linked hypophosphatemic rickets, it does not heal the coexistent osteomalacia. Because serum 1,25-dihydroxyvitamin D levels are inappropriately low in these patients and high calcitriol concentrations may be required to heal the osteomalacia, we chose to treat five affected subjects with high doses of calcitriol (68.2 +/- 10.0 ng/kg total body weight/d) and supplemental phosphorus (1-2 g/d) performing metabolic studies and bone biopsies before and after 5-8 mo of this therapy in each individual. Of these five patients, three (aged 13, 13, and 19 yr) were receiving conventional treatment at the inception of the study and therefore showed base-line serum phosphorus concentrations within the normal range. The remaining two untreated patients (aged 2 and 37 yr) displayed characteristic hypophosphatemia before calcitriol therapy. All five patients demonstrated serum calcitriol levels in the low normal range (22.5 +/- 3.2 pg/ml), impaired renal phosphorus conservation (tubular maximum for the reabsorption of phosphate per deciliter of glomerular filtrate, 2.13 +/- 0.20 mg/dl), and osteomalacia on bone biopsy (relative osteoid volume, 14.4 +/- 1.7%; mean osteoid seam width, 27.7 +/- 3.7 micron; mineral apposition rate, 0.46 +/- 0.12 micron/d). On high doses of calcitriol, serum 1,25-dihydroxyvitamin D levels rose into the supraphysiologic range (74.1 +/- 3.8 pg/ml) with an associated increment in the serum phosphorus concentration (2.82 +/- 0.19 to 3.78 +/- 0.32 mg/dl) and improvement of the renal tubular maximum for phosphate reabsorption (3.17 +/- 0.22 mg/dl). The serum calcium rose in each patient while the immunoactive parathyroid hormone concentration measured by three different assays remained within the normal range. Most importantly, repeat bone biopsies showed that high doses of calcitriol and phosphorus supplements had reversed the mineralization defect in all patients (mineral apposition rate, 0.88 +/- 0.04 micron/d) and consequently reduced parameters of bone osteoid content to normal (relative osteoid volume, 4.1 +/- 0.7%; mean osteoid seam width, 11.0 +/- 1.0 micron). Complications (hypercalcemia and hypercalciuria) ensued in four of these five patients within 1-17 mo of documented bone healing, necessitating reduction of calcitriol doses to a mean of 1.6 +/- 0.2 micrograms/d (28 +/- 4 ng/kg ideal body weight per day). At follow-up bone biopsy, these four subjects continued to manifest normal bone mineralization dynamics (mineral apposition rate, 0.88 +/ 0.10 micrometer/d) on reduced doses of 1.25-dihydroxyvitamin D with phosphorus supplements (2 g/d) for a mean of 21.3 +/- 1.3 mo after bone healing was first documented. Static histomorphometric parameters also remained normal (relative osteoid volume, 1.5 +/- 0.4%; mean osteoid seam width, 13.5 +/- 0.8 micrometer). These data indicate that administration of supraphysiologic amounts of calcitriol, in conjunction with oral phosphorus, results in complete healing of vitamin D resistant osteomalacia in patients with X-linked hypophosphatemic rickets. Although complications predictably require calcitriol dose reductions once healing is achieved, continued bone healing can be maintained for up to 1 yr with lower doses of 1,25-dihydroxyvitamin D and continued phosphorus supplementation. PMID- 3839247 TI - Permanent triggered antitachycardia pacemakers in the management of recurrent sustained ventricular tachycardia. AB - Permanent pacemakers capable of triggered ventricular stimulation were implanted in 28 patients with a history of sustained ventricular tachycardia or fibrillation. Noninvasive programmed ventricular stimulation was performed on 125 occasions during follow-up periods ranging from 1 to 25 months and was used to assess the efficacy of antiarrhythmic drug therapy, drug or dosage changes and left ventricular endocardial resection. Drug or dosage changes based on noninvasive programmed ventricular stimulation were made in 19 of the 28 patients. In addition, 126 episodes of spontaneous sustained ventricular tachycardia were terminated noninvasively in nine patients. It is concluded that a permanent pacemaker capable of triggered ventricular stimulation is useful in patients with ventricular tachycardia or fibrillation that is difficult to control. PMID- 3839248 TI - A comparison of the binding of IgE in the sera of patients with bakers' asthma to soluble and insoluble wheat-grain proteins. AB - The IgE-binding proteins from flour, associated with bakers' asthma, have been reassessed by use of a modified RAST suitable for both soluble and insoluble proteins. Nitrocellulose sheet was used for preparing RAST discs, and seven different solvents were compared for their suitability in preparing discs. Dilute alkali (1% potassium hydroxide) was chosen as the best solvent for disc preparation, and its use was compared with that of water as solvent. RAST analyses of sera from 24 allergic bakers demonstrated that the albumin fraction of flour is clearly allergenic (as found in previous studies), but in addition, major IgE-binding proteins were found in the other three fractions (globulin, gliadin, and glutenin) when potassium hydroxide was the solvent (but not with water). We conclude that current RAST procedures, which favor water-soluble allergens, are inadequate because they do not satisfactorily test for water insoluble allergens. PMID- 3839249 TI - [Changes in perimetric defects in chronic open-angle glaucoma studied by automated perimetry (Octopus)]. AB - The Octopus automatic perimeter was used to determine changes in visual field of 90 patients with chronic open angle glaucoma. Mean sensitivity value calculated from 62 of the 73 points of the apparatus program 33 - after elimination of those 11 points corresponding to Mariottes's zone and the central 10 degrees - provides an effective paracentral visual field monitoring numerical parameter. The authors named the parameter "global value". Statistical analysis of "global value" variations between two successive examinations showed: significant improvement between the first and the second tests; disappearance of the phenomenon between two further successive tests. The reasons for this pseudo-improvement remain unclear: perhaps the patients experience gained from the precious tests plays a part in the phenomenon. This should in any case be taken into account when assessing possible aggravation between two tests. Analysis of results suggests that, as a standard evaluation method, any "global value" degradation of the order of 1 db between the first two tests and 3 db between two successive tests performed after the second one is significant of a visual field degradation with a 1% range of error. PMID- 3839251 TI - Automating your practice. PMID- 3839250 TI - Extracochlear eight-channel electrode system. AB - The Cologne-Duren research group has developed a new extracochlear eight-channel electrode system. The first observations on six cases have shown encouraging psychoacoustic results. PMID- 3839252 TI - Identification of the promoter of the Pseudomonas gene coding for carboxypeptidase G2. AB - A 213-bp region of noncoding DNA upstream of the ATG start codon of the Pseudomonas carboxypeptidase G2 (CPG2) structural gene has been shown to contain the CPG2 promoter. The mRNA start point (+1) on the DNA sequence has been identified by mapping the 5' end of the CPG2 transcript. The identified promoter region contains a -10 region (TATAAG) that closely resembles the Escherichia coli consensus sequence (TATAAT), but has no easily recognisable -35 region. The lack of homology in the -35 region explains why this particular pseudomonad gene is poorly expressed in E. coli. Similar sequence differences may turn out to be the cause of the generally observed inefficient expression of Pseudomonas genes in E. coli. The promoter region also carries a sequence (CTGGCACTCGAATTGCT) that closely matches the consensus nif promoter sequence (CTGGPyAPyPuNNNNTTGCA) of Klebsiella pneumoniae and Rhizobium, and a similar sequence (ATGGCATGGCGGTTGCT) found in the promoter region of the xylABC operon of the TOL plasmid of Pseudomonas putida. PMID- 3839253 TI - Genetic relationships of the dengue virus serotypes. AB - Previous studies have compared RNA genomes from the different dengue virus serotypes by cDNA-RNA hybridization using dengue-1 virus- and dengue-2 virus specific cDNA probes. These probes revealed that there is a close genetic relationship between dengue virus serotypes 1 and 4. In this communication, the cDNA-RNA hybridization results using dengue-3- and dengue-4-specific cDNA probes to determine the genetic relatedness of all four dengue virus serotypes are reported. The results indicate that serotypes 1 and 4 are genetically very closely related (sharing about 70% of their genomes as detected by both the dengue-1 and dengue-4 cDNA probes), as are serotypes 3 and 4 (sharing about 50% of their genomes as detected by both the dengue-3 and dengue-4 cDNA probes). Serotype 2 does not seem to be very closely related to the other dengue virus serotypes by cDNA-RNA hybridization analysis. PMID- 3839254 TI - Muscarinic receptor subclasses in the chick embryo retina: influence of corticosterone treatment. AB - The present study was performed on retinas of chick embryos receiving at day 8 of incubation an intracerebral injection of 0.02 microgram of corticosterone. We had previously shown with the use of [3H]quinuclidinylbenzilate [( 3H]QNB) that such treatment induced the appearance of two muscarinic binding sites in the treated retinas, whereas only one was detectable in the controls. In the present study we investigated muscarinic cholinergic receptor subclasses with agonist and antagonist binding. Agonist binding was studied by varying the concentrations of carbachol and acetylcholine (10(-9) M-10(-5) M) in the presence of a constant concentration (0.2 nM) of [3H]QNB. Two subpopulations of receptors were revealed, a high- and a low-affinity receptor, in both treated and control retinas. However, in the hormone-treated retinas, the two subpopulations significantly differed from the controls in their affinity and in their relative percentage among the total receptor population. Moreover, using pirenzepine, an antagonist known to have the capacity to distinguish between muscarinic cholinergic subclasses, two receptor subpopulations were found to be present in the hormone treated retinas but a single one in the controls. It is suggested that hormone treatment can either induce the appearance of a new subclass of muscarinic cholinergic receptors or favor the maturation of a population of retinal cells having these receptors. Pirenzepine binding in retinas from intact embryos of 7, 9, and 11 days of incubation revealed one receptor subpopulation. Thus, these findings are more consistent with the hypothesis that corticosterone effects the target cells, either inducing changes in muscarinic receptor and/or modifying the receptor environment. PMID- 3839255 TI - Daphnane diterpenes from Diarthron vesiculosum: vesiculosin and isovesiculosin. AB - An alcoholic extract of Diarthron vesiculosum seed has yielded two novel daphnane diterpene esters, vesiculosin and isovesiculosin. Compounds 1 and 2 undergo rapid interconversion to an equilibrium mixture containing approximately 80% 1 and 20% 2 in solution at elevated temperatures. At 25 degrees or below, 1 and 2 may be isolated and stored for extended periods with minimal interconversion. Excoecariatoxin and simplexin are the major daphnane orthoesters present in D. vesiculosum, and 1 and 2 apparently are biosynthetic precursors of 3. Isolation of these compounds was monitored by bioassay against PS leukemia (in vivo), and structures were determined by 1H nmr, 13C nmr, ms, and comparison with known compounds. PMID- 3839256 TI - Chemistry of acronycine, VII. Facile rearrangement of dihydronoracronycine to dihydroisonoracronycine. PMID- 3839257 TI - Absolute configuration of deglucopterocereine: conversion into R-(+)-N methylcalycotomine. PMID- 3839258 TI - Antitumor agents, 71. Nudaphantin, a new cytotoxic germacranolide, and elephantopin from Elephantopus nudatus. AB - Nudaphantin, a new cytotoxic germacranolide, and the known elephantopin were isolated from Elephantopus nudatus, and their structures elucidated on the basis of physicochemical data, spectral evidence, and direct comparison with authentic samples. PMID- 3839259 TI - Bioactive marine natural products, with emphasis on handling of water-soluble compounds. AB - Recent progress in separation techniques has enabled us to work with water soluble components which, more often than not, are responsible for biological activities found in marine organisms. Isolation techniques and chemical and biological aspects of water-soluble marine natural products will be discussed with some representative examples. PMID- 3839261 TI - The localization of lectin-binding sites on Schwann cell basal lamina. AB - Basal laminae were separated from Schwann cells of mouse sciatic nerves by sonification, and the distributions of lectin-binding sites were demonstrated by electron microscopy using ferritin-conjugated lectins. Only three out of the 11 lectins examined were bound to the basal laminae of Schwann cells: they were Ricinus communis agglutinin-I (RCA-I), Canavalia ensiformis agglutinin (ConA) and Triticum vulgaris agglutinin (wheat germ agglutinin, WGA). It was notable that WGA was bound more densely to the cellular side than to the interstitial side, whereas in the case of RCA-I and ConA there were no differences in the binding density on the two sides of the basal lamina. These results indicate that there are sugar residues such as beta-D-galactose, alpha-D-mannose, alpha-D-glucose and beta(1-4) linked N-acetyl-D-glucosamine in the Schwann cell basal laminae. The first three sugar residues are almost equally densely distributed on the cellular and interstitial sides of the basal laminae, whereas beta(1-4) linked N-acetyl-D glucosamine is more densely distributed on the cellular than on the interstitial side. This result suggests that the basal lamina has a polarity in chemical composition between the cellular and interstitial sides. These findings are discussed in the context of the preferential attachment of regenerating axons to the cellular side of the Schwann cell basal laminae. PMID- 3839260 TI - Bioactive marine metabolites, IV. Isolation and the amino acid composition of discodermin A, an antimicrobial peptide, from the marine sponge Discodermia kiiensis. AB - An antimicrobial peptide, discodermin A, has been isolated from the marine sponge Discodermia kiiensis. The peptide showed antimicrobial activity as well as an inhibition of starfish embryo development. It appeared to be a tetradecapeptide consisting of D-Cys(O3H), L-Asp, L-MeGlu, L-Thr (2 moles), Sar, D-Pro, D-Ala, D- and L-t-Leu, D-Leu, L-Phe, D-Trp, and L-Arg. PMID- 3839262 TI - Moderate versus aggressive chemotherapy of nodular lymphocytic poorly differentiated lymphoma. AB - One hundred twenty-eight patients with purely nodular lymphocytic poorly differentiated lymphoma (NLPDL) without any prior therapy, entered on Eastern Cooperative Oncology Group protocol EST 2474, were analyzed for response, progression-free and overall survival. The restaged complete response rates with cyclophosphamide-prednisone (CP) (moderate regimen) of 54% compared favorably with those of the more intensive regimens; cyclophosphamide, vincristine, procarbazine and prednisone (COPP) (56%) and BCNU, cyclophosphamide, vincristine, and prednisone (BCVP) (53%). The toxicity of the regimens decreased from BCVP to COPP to CP. The median survival rate for the entire group was 7.8 years. Estimated progression-free survival at five years by regimen was COPP, 57%; BCVP, 26%; CP, 22% (P = .02). No other prognostic parameter significantly affected progression-free survival. In spite of the better progression-free survival of COPP-treated patients, the overall survival rates with the different induction regimens were similar. Maintenance therapy for patients in complete response at the end of induction therapy with periodic BCVP reinduction did not significantly affect the disease-free or overall survival. Cyclophosphamide-prednisone is a minimally toxic regimen effective in the treatment of NLPDL, but COPP, in view of its acceptable toxicity in this patient population and apparent superiority in providing a longer disease-free state, deserves further testing. PMID- 3839263 TI - A controlled evaluation of combined 5-fluorouracil, doxorubicin, and mitomycin C (FAM) for the treatment of advanced non-small-cell lung cancer. AB - One hundred eighty-six patients with advanced non-small-cell lung cancer were randomly assigned to treatment with combined 5-fluorouracil, doxorubicin, and mitomycin C (FAM) or combined methotrexate, doxorubicin, cyclophosphamide, and lomustine (MACC). Respective objective regression rates were comparable at 20% and 16%. Distribution of intervals to progression (overall median, 2.8 months) and survival times (overall median, 5.0 months) were essentially identical between the two regimens. The comparability of therapeutic effect was also evident within the subset of 81 patients who had adenocarcinoma cell type, although MACC showed a small advantage in survival after covariate analysis. In large-cell carcinoma, MACC showed a higher regression rate than that of FAM as well as a small advantage in survival. In squamous-cell carcinoma, however, FAM was superior to MACC in regression rates (32% v 4%) and also provided somewhat longer survival. With regard to toxicity, MACC produced a higher incidence of nausea and vomiting, whereas FAM produced more frequent and severe thrombocytopenia. From an overall standpoint, the therapeutic accomplishments of both regimens were disappointing. Our study does, however, provide additional evidence that mitomycin C-containing regimens may be selectively effective for squamous-cell carcinoma of the lung. PMID- 3839264 TI - Heterogeneity of binding of muscarinic receptor antagonists in rat brain homogenates. AB - The binding properties of (-)-[3H]quinuclidinyl benzilate and [3H] N methylscopolamine to muscarinic acetylcholine receptors have been investigated in rat brain homogenates. The binding of both antagonists demonstrated high affinity and saturability. Analysis of the binding data resulted in linear Scatchard plots. However, (-)-[3H]quinuclidinyl benzilate showed a significantly higher maximal binding capacity than that of [3H]N-methylscopolamine. Displacement of both ligands with several muscarinic receptor antagonists resulted in competition curves in accordance with the law of mass-action for quinuclidinyl benzilate, atropine and scopolamine. A similar profile was found for the quaternary ammonium analogs of atropine and scopolamine when [3H]N-methylscopolamine was used to label the receptors. However, when these hydrophilic antagonists were used to displace (-)-[3H] quinuclidinyl benzilate binding, they showed interaction with high- and low-affinity binding sites. On the other hand, the nonclassical muscarinic receptor antagonist, pirenzepine, was able to displace both ligands from two binding sites. The present data are discussed in terms of the relationship of this anomalous heterogenity of binding of these hydrophilic muscarinic receptor antagonists and the proposed M1 and M2 receptor subtypes. PMID- 3839265 TI - Characterization of [3H]pirenzepine binding to muscarinic cholinergic receptors solubilized from rat brain. AB - Membranes prepared from rat cerebral cortex were solubilized in buffer containing 1% digitonin. Material present in the supernatant after centrifugation at 147,000 X g was shown to contain binding sites for both [3H]quinuclidinyl benzilate [( 3H]QNB) and [3H]pirenzepine [( 3H]PZ). Recovery of binding sites was approximately 25% of the initial membrane-bound [3H]QNB binding sites. The Kd values for [3H]QNB and [3H]PZ binding to solubilized receptors were 0.3 nM and 0.1 microM, respectively. As has been observed previously in membrane preparations, [3H]PZ appeared to label fewer solubilized binding sites than did [3H]QNB. Maximum binding values for [3H]PZ and [3H]QNB binding to solubilized receptors were approximately 400 and 950 fmol/mg of protein, respectively. Competition curves for PZ inhibiting the binding of [3H]QNB, however, had Hill slopes of 1, with a Ki value of 0.24 microM. The k1 and k-1 for [3H]PZ binding were 3.5 X 10(6) M-1 min-1 and 0.13 min-1, respectively. The muscarinic receptor antagonists atropine, scopolamine and PZ inhibited the binding of [3H]QNB and [3H]PZ to solubilized receptors with Hill slopes of 1, as did the muscarinic receptor agonist oxotremorine. The muscarinic receptor agonist carbachol competed for [3H]QNB and [3H]PZ binding with a Hill slope of less than 1 in cerebral cortex, but not in cerebellum. GTP did not alter the interactions of carbachol or oxotremorine with the solubilized receptor. Together, these data suggest that muscarinic receptor sites solubilized from rat brain retain their abilities to interact selectively with muscarinic receptor agonists and antagonists. PMID- 3839266 TI - Evidence of a juvenile-hormone-like compound in the reproduction of Dermanyssus gallinae (Acari: Dermanyssidae). PMID- 3839267 TI - Osmolality of rice water, dextrose-saline solution and formula milk--implication in the management of infantile gastroenteritis. PMID- 3839268 TI - Variability in osmolality of home prepared formula milk samples. PMID- 3839269 TI - Dangerous infant feed preparation techniques: the role of maternal methods and improper formulae in Riyadh (Saudi Arabia). PMID- 3839270 TI - Hashimoto's thyroiditis and ulcerative colitis in a patient with Turner's syndrome. PMID- 3839271 TI - Early intervention aids vision-impaired infants. PMID- 3839272 TI - [Surfactant supplement in lung lavaged dogs]. PMID- 3839273 TI - [Differential diagnostic value of the peroral roentgenological contrast examination in intestinal obstruction]. PMID- 3839274 TI - [Prevention and treatment of postoperative intestinal paralysis]. PMID- 3839275 TI - [Use of the thymus preparation thymalin in the complex prevention of postoperative infectious complications after reconstructive biliary surgery]. PMID- 3839276 TI - [Complex treatment of patients with functional disorders of the gastrointestinal tract in acute surgical diseases of the abdominal organs]. PMID- 3839277 TI - [Method of combined sympathetic blockade for preventing postoperative intestinal paralysis]. PMID- 3839278 TI - Low-dose dopamine preserves renal blood flow in endotoxin shocked dogs treated with ibuprofen. AB - Drugs that inhibit prostaglandin (PG) biosynthesis improve hemodynamics and survival in experimental endotoxic and septic shock. The therapeutic utility of these agents in the management of septic patients may be limited, however, by their tendency to decrease renal blood flow (RBF) in animals and humans stressed by experimental manipulations or disease states that promote renal vasoconstriction. In the present study, we addressed this question: can low-dose intravenous (iv) dopamine (4 micrograms/kg/min), a known renal vasodilator, improve renal perfusion in endotoxin-shocked dogs treated with the PG synthesis inhibitor, ibuprofen. RBF was measured in pentobarbital anesthetized dogs using an electromagnetic flow meter. After obtaining baseline hemodynamics, Escherichia coli endotoxin (1.5 mg/kg) was given iv. The dogs were randomized 30 min later into three groups: Group I received saline; Group II received ibuprofen (12.5 mg/kg, iv); Group III received ibuprofen plus dopamine. Comparison of Groups I and II revealed that ibuprofen increased mean arterial pressure (MAP) and systemic vascular resistance (SVR) (P less than 0.0001 and P = 0.002, respectively) and decreased RBF (P = 0.019). Adding low-dose dopamine (Group II vs Group III) did not significantly affect MAP or SVR, but did augment RBF (P less than 0.001). We conclude that low-dose dopamine improves renal hemodynamics in ibuprofen-treated endotoxemic dogs. PMID- 3839279 TI - A potential microneurosurgical method for the manipulation of the developing nervous system of the postimplantation mouse embryo in utero. I. Injection methods. AB - A microsurgical method for the injection of cells into the postimplantation mouse embryo whilst it is in utero is described. Specific regions of the 9.5-day-old mouse embryo brain have been injected with marker substances, such regions including the intraventricular cavity of the telencephalon and the trigeminal facialis ganglion bulge of the forebrain. Histological study of the injected embryos shows that the injection method is precise and able to avoid damage to other nearly embryonic tissues. The method should have wide application in the study of questions of normal cell lineage, neoplasia, teratology, and toxicology. PMID- 3839280 TI - A computerized control system for a bar-press feeding task initiated by monkey vocalization. AB - Computerized control of a bar-press feeding task initiated by a monkey's vocalization was designed to study the motivational roles of brain regions in feeding behavior. In this paradigm, the monkey was required to vocalize in order to initiate the task and then press the bar 30 times to obtain the reward. A microcomputer was used to sense the vocalization and to control the task. Using this system, changes in single neuron activity in the orbitofrontal cortex and the lateral hypothalamic area preceding the time of the vocalization were observed. The entire system including interface and control program is described. PMID- 3839281 TI - A microcomputer system designed for psychological and behavioural experiments. AB - This paper describes a relatively cheap MC6809-based microcomputer designed to run experiments in real-time, and to use the hardware and software facilities of a larger (HOST) computer. Each microcomputer is capable of controlling a wide range of psychological and behavioural experiments, and includes 32K RAM, 4K EPROM, 32 digital input lines, 32 digital output lines, analogue/digital converters, and programmable timers. Any programming language may be used, providing a cross-compiler generating MC6809 executable code exists for the HOST. Following over a year of use we can confirm that this system provides an effective method of running psychological and behavioural experiments. PMID- 3839282 TI - Emeriamine, an antidiabetic beta-aminobetaine derived from a novel fungal metabolite. AB - Emeriamine [(R)-3-amino-4-trimethylaminobutyric acid], derived from a novel fungal metabolite "emericedin" [(R)-3-acetylamino-4-trimethylaminobutyric acid], was proved to be a strong and specific inhibitor of carnitine-dependent oxidation of long chain fatty acid (IC50; 3.2 X 10(-6)M) and its main inhibition site was shown to be carnitine palmitoyltransferase I located on the outer-surface of the mitochondrial inner membrane. Emeriamine also showed hypoglycemic and antiketogenic activities in a dose-dependent manner (1 - 10 mg/kg) when administered orally to fasted normal and diabetic animals. PMID- 3839283 TI - Ectopic pregnancy in Queensland, 1971-1980. AB - An examination of data from the Queensland Hospital Morbidity Collection indicated that the incidence of ectopic pregnancy as a proportion of total births appeared to have doubled between 1971 and 1980. Similar trends were evident in two other Australian regions. A review of possible biases suggested that the true rate of increase was unlikely to be much lower than that observed. In Queensland, venereal disease notifications in women and admissions to hospital for inflammatory diseases of the female reproductive organs have shown an analogous rise. PMID- 3839284 TI - Phase I study of VP-16 (etoposide) and amsacrine (AMSA) in the treatment of refractory acute leukemia. AB - Fourteen patients with refractory acute non-lymphocytic leukemia were entered into a dose-seeking trial of combination therapy with etoposide and amsacrine given daily for five consecutive days. There were three complete responses lasting 2 months, 3 months, and 10 months and two transient partial remissions. Dose-limiting toxicities were stomatitis and diarrhea. Prolonged aplasia occurred at the highest doses tested and appeared to result from repetitive doses of the combination given as maintenance. We recommend for induction and consolidation/intensification treatment VP-16, 125 mg/m2, and AMSA, 125 mg/m2, intravenously daily for 5 days. A reduction by at least 50% in the dose of each drug is recommended for maintenance of complete remissions. PMID- 3839285 TI - Regulation of 25-OH-D3 1 alpha-hydroxylase and 24-hydroxylase activities along the rat nephron and in isolated kidney cells. AB - The regulation of 25-OH-D3 metabolism in isolated cells of one kidney and microdissected single nephron segments from the contralateral kidney was studied. Preparations from rats fed a normal diet produced only 24,25-OH2-D3, in isolated cells (7.9 pmol/1.25 X 10(6) cells/min; 5 micron 25-OH-D3), in proximal convoluted tubules (PCT; 1.9 pmol/mm/min; 0.1 mM 25-OH-D3), and proximal straight tubules (PST; 1.5 pmol/mm/min; 0.1 mM 25-OH-D3). Distal tubules (DT) did not metabolize 25-OH-D3. Rats pretreated with 1,25-(OH)2-D3 produced more 24,25-(OH)2 D3 in PST (2.49 pmol/mm/min), with no change of metabolism in the isolated cells, PCT and DT. Preparations from vitamin D deficient rats produced both 24,25-(OH)2 D3 and 1,25-(OH)2-D3: 7.2 and 4.6 pmol/1.25 X 10(6) cells/min, respectively, in the cells, 0.9 and 0.3 pmol/mm/min in PCT and 1.2 and 0.4 in PST. These results confirm that rat PCT and PST have 24-hydroxylase activity, that in vitamin D deficiency, rat renal cells, PCT and PST all have both 24-hydroxylase and 1 alpha hydroxylase activity, and that 1,25-(OH)2-D3 pretreatment increases the 24 hydroxylase activity in the PST but not in the PCT. PMID- 3839286 TI - Calciuric response to 1,25-(OH)2D3 in early renal failure. AB - In 10 patients with early renal failure (glomerular filtration rate between 30 and 80 ml/min/1.73 m2) without nephrotic syndrome and in 13 controls the calciuric response to increasing oral doses of calcitriol [1,25-(OH)2D3] (0.25; 0.5; 1.0; 1.5 micrograms/day) was evaluated. Patients had initially normal plasma calcitriol levels, normocalcemia and hypocalciuria. With calcitriol doses up to 1 microgram/day, the increment of UVCa was less in patients. Only at 1.5 micrograms/day the calciuria of patients reached the baseline calciuria of controls. The data document that 1.0 microgram calcitriol per day is required to normalize UVCa in patients with early renal failure and normal calcitriol levels. Blunted calciuric response to low doses of calcitriol is compatible with an altered dose-response relationship. PMID- 3839287 TI - Prostatic abscess with adult respiratory distress syndrome. PMID- 3839288 TI - Radio-frequency interference in cochlear implants. PMID- 3839289 TI - Cloning, sequencing and expression of cDNA for a novel subunit of acetylcholine receptor from calf muscle. AB - The nicotinic acetylcholine receptor (AChR) from fish electric organ has a subunit structure of alpha 2 beta gamma delta, and this is thought to be also the case for the mammalian skeletal muscle AChR. By cloning and sequencing the complementary or genomic DNAs, we have previously elucidated the primary structures of all four subunits of the Torpedo californica electroplax and calf muscle AChR and of the alpha- and gamma-subunits of the human muscle AChR; the primary structures of the gamma-subunit of the T. californica AChR and the alpha subunit of the Torpedo marmorata AChR have also been deduced elsewhere. We have now cloned DNA complementary to the calf muscle messenger RNA encoding a novel polypeptide (the epsilon-subunit) whose deduced amino-acid sequence has features characteristic of the AChR subunits and which shows higher sequence homology with the gamma-subunit than with the other subunits. cDNA expression studies indicate that the calf epsilon-subunit, as well as the calf gamma-subunit, can replace the Torpedo gamma-subunit to form the functional receptor in combination with the Torpedo alpha-, beta- and delta-subunits. PMID- 3839291 TI - Identification of serotonin M-receptor subtypes and their specific blockade by a new class of drugs. AB - We describe a new class of drugs that selectively block serotonin M-receptors on peripheral neurones. Because of their high affinity, some of these drugs are the most potent of any pharmacological class yet reported. They have allowed the identification of three M-receptor subtypes, one of which is responsible for mediating the painful effects of serotonin in humans. PMID- 3839290 TI - Molecular characterization and expression of the gene encoding human erythroid potentiating activity. AB - Erythropoietin is the primary physiological regulator of erythropoiesis; however, in vitro studies have identified another class of mediators which appear to be important in stimulating erythroid progenitors. These factors have generally been referred to as burst-promoting activities (BPA), because they stimulate the growth of early erythroid progenitors referred to as burst-forming units erythroid (BFU-E) which give rise to colonies of up to thousands of haemoglobinized cells. We recently reported purification of a burst-promoting activity from medium conditioned by the Mo T-lymphoblast cell line infected with human T-cell lymphotropic virus type II (HTLV-II). This purified glycoprotein of relative molecular mass (Mr) 28,000 also stimulates colony formation by more mature erythroid precursors (CFU-E) and is therefore referred to as erythroid potentiating activity (EPA). Purified EPA specifically stimulates human and murine cells of the erythroid lineage, unlike murine interleukin-3 (IL-3) which stimulates precursor cells from all haematopoietic lineages. We report here the isolation of a complementary DNA molecular clone encoding EPA and its use in producing EPA in COS (monkey) cells and CHO (Chinese hamster ovary) cells. We also define the organization of the EPA gene in human DNA. PMID- 3839292 TI - Molsidomine on cardiovascular leukotriene D4 actions. AB - Anaesthetized open-chest dogs were used to study the effects of intracoronary leukotriene D4 (LTD4; 0.5 micrograms/kg) on haemodynamics, the electrocardiogram (ECG), coronary blood flow in the left circumflex artery and coronary resistance in the absence or presence of the antianginal drug molsidomine (500 micrograms/kg i.v.). LTD4 increased left ventricular (LV) filling pressure from 6.5 +/- 3.8 to 14.7 +/- 3.2 mm Hg (P less than 0.01), decreased LV dP/dtmax from 2,500 +/- 200 to 1,240 +/- 205 mm Hg/s (P less than 0.05), elevated the S-T segment of the ECG from 0.3 +/- 0.2 to 2.4 +/- 0.6 mV (P less than 0.01), and coronary resistance from 3.4 +/- 0.9 to 33.7 +/- 4.8 mm Hg X min X ml-1 (P less than 0.001). Coronary artery blood flow fell from 33.8 +/- 2.7 to 3 +/- 3 ml/min (P less than 0.001). Molsidomine treatment 15 min prior to repeated intracoronary LTD4 application attenuated vasoconstrictor response to LTD4 and the subsequent elevation in total coronary vascular resistance. The negative inotropic actions of the eicosanoid were counteracted by molsidomine. Filling pressure decreased and no temporary signs of ischaemia were noted in the ECG. Inhibition of the cyclooxygenase enzyme activity by i.v. indomethacin (5 mg/kg) had no effects on the LTD4-induced haemodynamic alterations, the ECG, and coronary flow and resistance. The antagonistic molsidomine actions on haemodynamic and electrocardiographic LTD4 effects were not influenced by previous indomethacin treatment.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839293 TI - Serum phosphate, parathyroid hormone and vitamin D metabolites in patients with chronic renal failure: effect of aluminum hydroxide administration. AB - Patients with chronic renal failure showed the existence of phosphate retention, secondary hyperparathyroidism, and reduced production of 1,25-(OH)2D. In order to determine the effect of correction of hyperphosphatemia on secondary hyperparathyroidism and vitamin D metabolism in those patients, 7 nondialyzed patients with chronic renal failure were treated with large doses of A1(OH)3 (15 18 g/day) to correct their high levels of serum phosphate. After treatment with A1(OH)3, serum phosphate fell significantly (p less than 0.005) from 6.3 +/- 1.3 (mean +/- SD) to 3.7 +/- 0.5 mg/dl. Serum parathyroid hormone decreased significantly (p less than 0.02) from 2.87 +/- 1.64 to 1.85 +/- 1.26 ngEq/ml. Serum 1,25-(OH)2D was low compared to the normal mean level before A1(OH)3 administration and decreased significantly (p greater than 0.02) from 19.4 +/- 6.1 to 11.4 +/- 4.3 pg/ml after the treatment. Aluminum levels increased significantly (p greater than 0.02) from 1.7 +/- 1.0 to 3.6 +/- 1.5 micrograms/dl. Serum calcium, calcitonin, and 25-(OH)D showed no significant change. Our data suggested that the suppression of secondary hyperparathyroidism by A1(OH)3 treatment results in a decrease of the 1,25-(OH)2D level in patients with chronic renal failure, even though their hyperphosphatemia has been corrected. We speculate that aluminum loading might play a role in diminishing the secretion of parathyroid hormone and the production of 1,25-(OH)2D in humans. PMID- 3839294 TI - The bionic ear: principles and current status of cochlear prostheses. AB - The field of cochlear prostheses is reviewed, emphasizing the neurophysiological principles necessary for the development of a successful cochlear prosthesis. Pertinent auditory physiology is reviewed, and four conditions are proposed which, if met, should result in speech recognition by the patient with an implant. These conditions are: The surviving neural population must be adequate over the frequency distribution required to deliver the necessary information for speech discrimination. The central neural processing pattern for decoding and recognizing speech must have been established and still persist. The processing of the acoustic signal by the auditory system up to the level of the prosthesis interface must be understood and predictable from the acoustic stimulus. The relationship between the response patterns of the neural elements and the electrical stimulus must be well documented and controllable. The degree to which these conditions can presently be met is discussed, with some suggestions for future development. The function of the cochlear prosthesis is separated into a signal processing section and an electrical stimulus section. Two signal processing strategies are analog processing of the acoustic signal and speech feature extraction from the acoustic signal. Four possible electrical stimulation strategies are direct analog stimulation from the signal processor, pulse amplitude modulation, pulse width modulation, and stimulation designed to optimize the neural responses to electrical stimulation. Some of the present generation cochlear prostheses, including five approved by the FDA as investigational devices, are discussed according to this classification. The clinical results of testing these devices as aids to lip reading and as stand alone speech reception aids are compared. All are a potential aid to lip reading. Some prosthesis designs have been implanted in patients who then showed exceptional open set speech discrimination. These exceptional patients have used both single channel and multichannel devices and devices with both analog processing and speech feature extraction strategies. These results are encouraging. More consistent and better speech reception is anticipated for the future as this field develops. PMID- 3839295 TI - Dorsal root innervation of spinal cord neurons after dorsal root implantation into the spinal cord of adult rats. AB - In an attempt to enhance spinal cord reinnervation by dorsal root neurons in the adult rat, the root was cut and implanted into the cord. Wheat germ agglutinin horseradish peroxidase (WGA-HRP) was injected into the dorsal root ganglion in order to look for regrowth in the spinal cord. Instead of regenerated dorsal root axons, there was an occurrence of HRP-labelled spinal cord neurons in the vicinity of the implanted dorsal root. In control animals, which had been subjected to dorsal root crush, no labelled neurons or terminals were observed in the spinal cord. PMID- 3839297 TI - [Possibilities of automatic perimetry using the computer perimeter "Perimetron" in the diagnosis of glaucoma]. PMID- 3839296 TI - Effect of nicotine on fetal prostacyclin and thromboxane in humans. AB - To study the effect of nicotine on fetal prostacyclin and thromboxane A2, specimens from the umbilical arteries of infants born to healthy nonsmoking mothers were superfused in the absence or presence of nicotine (50 to 10,000 micrograms/mL), and the releases of 6-keto-prostaglandin F1alpha (a break-down product of prostacyclin) and thromboxane B2 (a metabolite of thromboxane A2) were measured. The baseline production of 6-keto-prostaglandin F1alpha (63.9 +/- 8.8 ng/minute per gram of dry weight tissue, mean +/- SE, N = 10) or that of thromboxane B2 (1.3 +/- 0.2 ng/minute per gram, N = 10) were unaffected by nicotine. To study the effect of nicotine on thromboxane A2 synthesis by the fetal platelets, thrombin-induced platelet aggregation and consequent thromboxane A2 synthesis were allowed to occur in the whole cord blood in the absence or presence of nicotine (10 to 500 micrograms/mL). Nicotine inhibited concentration dependently platelet thromboxane A2 synthesis from the baseline level (107.3 +/- 7.1 ng/mL) by 15 to 93%. This inhibition was also seen in thromboxane A2 synthesis starting from exogenous arachidonic acid, suggesting that nicotine inhibits either cyclooxygenase and/or thromboxane A2 synthetase in the fetal platelets. Thus, nicotine is hardly responsible for maternal smoking-induced changes in fetal prostacyclin formation. PMID- 3839298 TI - Intraocular pressure elevation following Nd:YAG laser posterior capsulotomy. AB - Intraocular pressures (IOP) and tonographic outflow facilities were measured following neodymium (Nd): YAG laser posterior capsulotomy in 13 pseudophakic and 8 aphakic eyes. Mean intraocular pressure (IOP) peaked by three hours with a mean increase of 13 mmHg, remained elevated by 5 mmHg at 24 hours but returned to baseline by one week. Fourteen eyes (67%) had greater than or equal to 10 mmHg elevation and eight (38%) had greater than or equal to 40 mmHg maximum IOP. All the patients who eventually demonstrated a greater than or equal to 10 mmHg elevation within six hours of the capsulotomy initially had an IOP elevation greater than or equal to 5 mmHg at one hour. The mean outflow facility was reduced from 0.18 microl/min/mmHg before capsulotomy to 0.08 microl/min/mmHg (55%, P less than 0.0001) at four hours and was still decreased at 0.13 microl/min/mmHg (27%, P less than 0.05) at one week. Seventy-five percent of aphakic and 15% of pseudophakic patients had maximum IOP greater than or equal to 40 mmHg (P less than 0.01). Measurements should be performed one hour postlaser in all patients for IOP and three to four hours in aphakic patients, glaucomatous patients, patients receiving greater than or equal to 200 mjoules total laser energy, and patients with greater than or equal to 5 mmHg elevation at one hour in order to detect and treat significant IOP elevations. PMID- 3839299 TI - Orbital compliance in Graves' eye disease. AB - Thirty-three patients with Graves' eye disease (GED) and 68 normal subjects had their orbital compliance measured by determining the force generated on retropulsing the eye and also estimated on digital retropulsion, and their eye position determined with an exophthalmometer. Patients with compressive optic neuropathy showed significantly higher mean forward force on retropulsion than other Graves' eye disease patients or normal subjects, supporting the theory that the tissue is compressed in these orbits. There is a suggestion that orbital compliance testing of a GED patient without compressive optic neuropathy may be of value in predicting the risk of the patient developing compressive optic neuropathy. There is no association between the force on ocular retropulsion and the exophthalmometer reading. The digital estimation of the resistance to retropulsion did not reliably suggest the measured forces. PMID- 3839300 TI - [Premature labor and intrauterine infection]. PMID- 3839301 TI - Role of fetal 1,25-dihydroxyvitamin D production in intrauterine phosphorus and calcium homeostasis. AB - During intrauterine life, fetal mineral accretion depends on active transfer from mother to fetus by the placenta. To evaluate the role of fetal production of 1,25 dihydroxyvitamin D in regulation of fetal phosphorus, calcium, and parathyroid homeostasis, studies were performed in ewes and their fetal lambs. Fetal nephrectomy caused a rise in fetal serum phosphorus and a fall in total calcium 5 days after nephrectomy. Fetal blood ionized calcium also fell and serum parathyroid hormone rose. In sham-nephrectomized fetuses, all four measurements were unchanged compared to control values. Simultaneous maternal values of ionized calcium were normal in control and nephrectomized fetuses. Fetal ureteral severance and drainage of urine into the fetal peritoneal cavity produced none of the effects of fetal nephrectomy. Daily intravenous injection of 1,25 dihydroxyvitamin D into fetuses after nephrectomy prevented the rise in serum phosphate, and serum calcium did not fall. The results suggest that fetal 1,25 dihydroxyvitamin D regulates fetal phosphate homeostasis, perhaps by the placenta, which in turn regulates blood-ionized calcium concentration. PMID- 3839302 TI - Lung surfactant replacement in premature lambs with extracted lipids from bovine lung lavage: effects of dose, dispersion technique, and gestational age. AB - Extracted bovine calf lung lipids (CLL) with minimal protein (approximately 1%) were instilled prior to ventilation in groups of premature lambs of average gestational ages of 127 and 133 days. Aqueous dispersions of CLL were prepared by two techniques prior to instillation: sonication in an ice bath (S) and mechanical vortexing at room temperature (V). A low surfactant dose (15 mg CLL/kg animal weight) and a high dose (100 mg/kg) were investigated for each dispersion technique. Following tracheal instillation of surfactant, lambs were ventilated with 100% oxygen for 2 h with umbilical circulation intact, and for up to an additional 10 h after separation. A clear improvement in blood oxygenation and lung compliance was found over controls for lambs given 15 mg/kg and 100 mg/kg CLL(V), and 100 mg/kg CLL(S). Lambs treated with 15 mg/kg CLL(S) failed to improve over controls. Experimental groups treated with equal doses of CLL(V) and CLL(S) had similar amounts of lung lavage phospholipid, with values progressively declining during ventilation. Analyses of in vitro surface properties showed that both vortexed and sonicated CLL dispersions adsorbed to equilibrium surface pressures of 45-47 dynes/cm in seconds at concentrations greater than or equal to 0.25 mg CLL/ml. Both dispersions also lowered surface tension to less than 1 dyne/cm under dynamic compression at 37 degrees C in 100% humidity, although CLL(V) showed some enhancement over CLL(S) in dynamic surface activity at low subphase concentration (0.5 mg/ml). Moreover, CLL(V) and CLL(S) differed markedly in their effects on pressure-volume mechanics in a surfactant-deficient excised rat lung model. Instilled CLL(V) dispersions improved excised lung pressure volume mechanics at significantly lower concentrations than CLL(S) dispersions. PMID- 3839303 TI - Myosin light chain phosphorylation and isometric twitch potentiation in intact human muscle. AB - The effects of a single voluntary contraction of the quadriceps muscle group on phosphate incorporation into the phosphorylatable light chains (P-light chains) of fast and slow myosin isolated from the vastus lateralis muscle and potentiation of the electrically stimulated twitch tension was studied in intact human muscle. Twitch potentiation was maximal 20 s after the voluntary contraction. Thereafter, twitch potentiation declined, but was still significantly higher than pre-contraction values 2 min after the voluntary contraction. Phosphate incorporation into the P-light chain of fast myosin followed a similar time course to twitch potentiation, but no phosphate was incorporated into slow myosin P-light chains. These observations suggest that myosin light chain kinase activity is mainly associated with fast-twitch muscle fibers and, in agreement with previous studies, suggests that twitch potentiation associated with P-light chain phosphorylation is confined to the fast-twitch fibers of human muscle. PMID- 3839304 TI - Conservation and variability of wheat alpha/beta-gliadin genes. AB - We have sequenced two genomic clones for wheat alpha/beta-gliadin storage protein genes. Comparison with a known sequence reveals close homology between the three and confirms the previously suspected evolutionary relatedness of members of this gliadin family. The coding region can be divided into six domains. Two unusual structures were found within this region: (i) The P-boxes which are composed of 12 codons, six of which are for proline, that are tandemly repeated four or five times; and (ii) Two polyglutamine stretches which consist of 18-22 tandemly repeated glutamine codons in one case, and 7-28 in the second. Analysis of the P box structures revealed that certain mutations were probably present in the hypothetical ancestral alpha/beta-gliadin gene prior to gene multiplication. None of the genes have introns. All of the genes appear to contain typical eukaryotic promoters and also possess the double polyadenylation signal of plants. PMID- 3839305 TI - Cloned DNA probes regionally mapped to human chromosome 21 and their use in determining the origin of nondisjunction. AB - A number of unique sequence recombinant DNA clones were isolated from a recombinant DNA library constructed from DNA enriched for chromosome 21 by flow sorting. Of these, five were mapped to chromosome 21 using a somatic cell hybrid. Regional mapping of these probes and of a probe previously assigned to chromosome 21, was carried out with the aid of chromosome 21 rearrangements using both chromosome sorting and a somatic cell hybrid. Three probes were shown to be located on either side of the breakpoint 21q21.2. Two of the probes were shown to identify restriction fragment length polymorphisms (RFLPs) with high rare-allele frequencies (0.46 and 0.43). A Bgl II RFLP revealed the parental origin of non disjunction in three of ten families with Down's syndrome. PMID- 3839306 TI - Analysis of repetitive sequence elements containing tRNA-like sequences. AB - Several repetitive sequence elements from diverse species share extensive sequence homology with tRNA molecules. Analysis of the tRNA-like sequences within these elements suggest that they have originated from authentic tRNA sequences. Elements containing tRNA-like sequences can be divided into three distinct groups whose members share extensive sequence homology, have similar sequence organization and have unique species distribution. We suggest that these three groups represent independent examples of retroposon families that have originated from tRNAs. PMID- 3839307 TI - Effect of dietary calcium stress on plasma vitamin D3 metabolites in the egg laying Japanese quail. AB - Experiments were performed to ascertain whether circulating levels of 25 hydroxyvitamin D3 and 1,25-dihydroxyvitamin D3 varied in a cyclic manner during the 24-hr ovulatory period in Japanese quail hens and to assess the effects of dietary calcium restriction upon levels of the plasma vitamin D3 metabolites during that period. Birds fed a marginally-deficient calcium diet (1.7%) had significantly elevated plasma 1,25-dihydroxyvitamin D3 (.71 +/- .11 ng/ml, mean +/- SEM) compared with those fed high (3.5%) calcium (.35 +/- .04; P less than .01), although these values did not reveal any significant cyclic variation or correlation with known diurnal pulses in circulating 17 beta-estradiol. The magnitude of the plasma 1,25-dihydroxyvitamin D3 response to dietary calcium stress in some individuals was as great as 2.2 ng/ml, which are certainly among the highest values reported in any avian or mammalian species to date. These observations suggest that the total circulating level of plasma 1,25 dihydroxyvitamin D3 is not important in the direct cyclic regulation of laying hen calcium metabolism. The levels of free plasma hormone, target cell membrane permeability of the hormone, or regulation of cytosolic/nuclear 1,25 dihydroxyvitamin D3 receptor activity are potential aternate levels of the control of vitamin D3 mediated calcium metabolism in the quail hen. PMID- 3839308 TI - Mortality of Culicoides brevitarsis fed on cattle treated with ivermectin. AB - Adult female Culicoides brevitarsis Kieffer, important vectors of arboviruses affecting livestock in Australia, were fed on penned Hereford yearling cattle which had been given a single subcutaneous injection of ivermectin at a dose of 200 mcg/kg. The mean mortality of engorged females 48 hr after feeding on the treated cattle was 99% for 10 days posttreatment and in excess of 40% for 18 days posttreatment. Based on these results, it appears that ivermectin administered subcutaneously could be a useful tool for the control of Culicoides-transmitted diseases and would provide an attractive alternative to "slaughter out" programs in the case of a major exotic disease threat. PMID- 3839309 TI - Structure-activity studies on methoxy-substituted phenylisopropylamines using drug discrimination methodology. AB - Eighteen rats were trained to discriminate 1.0 mg/kg of (+)-amphetamine sulfate from saline in a two-lever operant procedure. Once responding was stable, these animals were administered various doses of sixteen different methoxy-substituted phenylisopropylamines in tests of stimulus generalization. Of three possible mono methoxyphenylisopropylamines, all three produced amphetamine-appropriate responding, but none was as potent as racemic amphetamine. The amphetamine stimulus did not completely generalize to any of the di- or tri methoxyphenylisopropylamines. PMID- 3839310 TI - Biopharmaceutical investigation of rectal suppositories. Part 2(1): Pharmaceutical and biological availability of phenobarbital and phenobarbital sodium. AB - The influence of the suppository base and drug solubility on the release an absorption of phenobarbital and phenobarbital-sodium from model suppositories was investigated. It was established that the pharmaceutical and biological availability of phenobarbital is higher from a hydrophilic base because of its improved solubility. The rate and the degree of release of phenobarbital-sodium are more significant from lipophilic bases. The bioavailability of two drug forms phenobarbital and phenobarbital-sodium--is almost equal after rectal and oral administration. PMID- 3839311 TI - Coronary risk evaluation. Computer communication. PMID- 3839313 TI - [Gamma-ray spectra analysis program by microcomputer for neutron activation analysis]. PMID- 3839312 TI - Hypolaetin-8-O-glucoside, an anti-inflammatory flavonoid from Sideritis mugronensis. PMID- 3839314 TI - [Protein C and its clinical implications]. PMID- 3839315 TI - Radioimmunoassay for neuropeptide Y (NPY): chromatographic characterization of immunoreactivity in plasma and tissue extracts. AB - A sensitive and specific radioimmunoassay was developed to determine the occurrence and concentration of neuropeptide Y (NPY) in plasma and tissue extracts. Furthermore, NPY-like immunoreactivity (NPY-Li) was characterized by means of three different chromatographic systems. The NPY antiserum used (NI) did not cross-react with related peptides of the pancreatic polypeptide family except avian pancreatic polypeptide (1% cross-reactivity). Unextracted plasma contained high molecular weight proteins which interfered in the assay. Acid ethanol extraction removed this protein interference allowing a 90% recovery of NPY-Li. The content of NPY-Li in human plasma from healthy subjects was close to or below the detection limit (less than 22 pmol/l). Sympathetic nerve stimulation in the cat increased the output of NPY-Li from the splenic vein suggesting the release of this peptide upon sympathetic activation. The major peak of NPY-Li in spleen extracts and splenic vein plasma co-eluted with synthetic porcine NPY and a minor peak with larger Stokes radius was also present. The present radioimmunoassay enables further studies on the physiological and pathophysiological role of NPY. PMID- 3839316 TI - NIH budget and better health. PMID- 3839317 TI - Molecular cloning of a gene sequence regulated by nerve growth factor. AB - Nerve growth factor (NGF) is essential for the development and differentiation of sympathetic or sensory neurons. A complementary DNA was cloned that corresponds to a gene sequence induced more than 50-fold in a cultured target cell line of pheochromocytoma cells (PC12 cells) 5 hours after the addition of NGF. The induced messenger RNA encodes a 90,000-dalton polypeptide that may represent one of the primary events in NGF-induced differentiation of neurons. PMID- 3839318 TI - High-dose cytosine arabinoside and mAMSA induction and consolidation in patients with previously untreated de novo acute nonlymphocytic leukemia: Phase I Pilot Study for the Eastern Cooperative Oncology Group. PMID- 3839319 TI - [Measurement of the health status of the population: a basic activity for health services]. PMID- 3839320 TI - [Projects for transforming the national health service systems in Latin America]. PMID- 3839321 TI - Hollow visceral myopathy in black South Africans. A report of 14 cases. AB - Familial (hereditary) hollow visceral myopathy is a rare cause of chronic intestinal pseudo-obstruction. Fourteen black patients with the disease, 6 males and 8 females, are described. The earliest morphological lesion is an isolated smooth-muscle degeneration of the muscularis propria of the bowel, especially the colon. The pathological changes are lysis and disappearance of the muscularis propria of the bowel wall, leading to dilatation and intra-luminal stasis. progressive involvement results in large areas of defective muscularis propria. The occasional occurrence of mesenteric arteries showing medial muscular fibrosis supports the concept of a generalized primary smooth-muscle myopathy. PMID- 3839322 TI - Elevated thromboxane B2 levels during erection. PMID- 3839323 TI - [Assay of pethidine by gas chromatography-mass spectrometry for its pharmacokinetic study during intrathecal administration]. PMID- 3839324 TI - [Primary neoplasms and hyperplasias of the gastric mucosa in the dog]. AB - During the past 15 1/2 years (from 1969 to the middle of 1984) 35 canine primary gastric neoplasms (32 necropsies and 3 partial gastric resections) were examined. Brought into relation with the total number of necropsies carried out in dogs (12,494) the incidence of stomach tumours in the dogs is 0.3%. The tumours are classified as 12 benign (1 adenomatous polyp, 11 leiomyomas) and 23 malign neoplasms (20 carcinomas, 3 sarcomas). In addition a circumscribed hyperplasia of the gastric mucosa is reported. The average age of the dogs with carcinomas is 8.9 years. The tumours were most frequently located in the pyloric region and combined with ulcerations. Most of them had metastases. According to a classification of human gastric carcinomas, which also is applied to animals, 18 tumours are of the "diffuse type", two of the "intestinal type". The described cases are compared with corresponding data of the literature. The pathogenesis and the etiology of gastric carcinomas are discussed. PMID- 3839325 TI - [Reduced-dose adjuvant CMF-chemotherapy combined with postoperative irradiation in breast cancer with lymphatic metastases. A prospective study of 45 patients]. AB - From 1978 to 1982, 45 postoperative cases of breast cancer with lymphatic spread received radiation to the chestwall and axillary, supra- and infraclavicular lymph nodes up to 40 Gy. In addition, we gave 600 mg cyclophosphamide, 50 mg methotrexate and 750 mg 5-fluorouracil intravenously on day 1 of altogether nine 21-day cycles. The median follow-up is 37 months, and we calculate a 5-year over all actuarial survival-rate which was 83% in the premenopausal and 77% in the postmenopausal patients. The disease-free 5-year survival-rate was 74% for the premenopausal and 61% for the postmenopausal women. There were twice as many patients with stage N2 in the postmenopausal group. No severe side-effects were observed. These promising preliminary results and the good tolerance of the above mentioned combined therapy recommend it for future randomized studies. PMID- 3839326 TI - Applications of the pulsed Nd-YAG laser in the vitreous. PMID- 3839327 TI - Neodynium-YAG laser vitreomembranectomy (a noninvasive technique). PMID- 3839328 TI - Surgery and sensorineural hearing loss. PMID- 3839329 TI - [Social tolerance of gay behavior in today's society]. PMID- 3839330 TI - Neodymium:YAG laser irradiation of urinary bladder tumors. Follow-up study of 100 consecutively treated patients. AB - Advanced laser beam technology has made endoscopic destruction of urinary bladder tumors possible. The neodymium: YAG laser is more suited for this purpose than the other available laser systems because of the higher penetration power into biological tissue. Small superficial tumors are particularly suitable for this treatment, but it is also possible to deal with muscle invasive tumors. The treatment procedure is simple and well tolerated by the patients. Recurrence of tumor in the irradiated area can be avoided by precise irradiation. In spite of being a no-touch technique, however, laser does not appear to prevent the occurrence of new tumors in nonirradiated areas. PMID- 3839331 TI - [Use of plasmapheresis for the preoperative preparation of toxic goiter patients]. AB - The preoperative preparation by plasmapheresis was used in 106 patients with toxic goiter. The authors make a conclusion that plasmapheresis is an efficient method in the preoperative care of patients with thyrotoxicosis allowing to shorten this period. PMID- 3839332 TI - The ophthalmopathy of Graves' disease. PMID- 3839333 TI - Anorectal and enteric infections in homosexual men. AB - Homosexual men are at increased risk for traditional sexually transmitted anorectal infections (gonorrhea, syphilis, venereal warts, herpes and chlamydial infection) and enteric infections characterized by a low infecting inoculum (hepatitis A and B, amebiasis, giardiasis, shigellosis and campylobacteriosis). Infections account for most of the gastrointestinal symptoms in homosexual men seen at sexually transmitted disease clinics, but asymptomatic and polymicrobial infections are also common. Distinguishing three syndromes-proctitis, proctocolitis and enteritis-is clinically useful because these syndromes correlate with specific microorganisms and modes of transmission. A careful anoscopic examination, rectal Gram's stain, cultures for gonorrhea and chlamydia, VDRL and darkfield examination of suspicious lesions should be routinely done when sexually active homosexual men present with unexplained gastrointestinal symptoms. Based on the history, physical examination and initial laboratory studies, patients can usually be classified as having proctitis, proctocolitis or enteritis. This distinction facilitates selection of both confirmatory diagnostic tests and antimicrobial therapy. The effectiveness of empiric treatment regimens for asymptomatic sexual contacts or for symptomatic patients in whom microbiological tests are pending has not been studied. PMID- 3839334 TI - [Malignant lymphoma with primary bladder localization]. AB - The malignant lymphoma with primary localisation in the urinary bladder rarely occurs in the clinic. The therapy essentially depends on the position and the extension of the tumour. Despite their malignity these tumours seem, however, to have a relatively good prognosis. PMID- 3839335 TI - [Prevention of sterility]. AB - An overview is given about possibly preventable causes of infertility. The best chances for prevention are in tubal sterility and ectopic pregnancy. Methods of "primary prevention" are reduction of STD by health education and epidemiologic actions, by reduction and improvement of intrauterine operations in young women. The most important methods in "secondary prevention" are early and optimal treatment of PID and organ preservation in ectopic pregnancy. The difficulties in prophylaxis of endocrine infertility are discussed. For prevention of male infertility some procedures are necessary: Prevention resp. optimal treatment of genital infections, early treatment of development disorders and varicocele and elimination of chemical and physical noxes on male fertility. PMID- 3839336 TI - [Management of mycotic aneurysms. Apropos of 3 cases]. AB - The diagnosis of mycotic aneurysms remains rather difficult. When a mycotic aneurysm is found, two therapeutic measures should be taken without delay: on the one hand an antibiotherapy which is started preoperatively and continued at least six weeks postoperatively, and on the other hand a surgical intervention. In this review, the authors present three types of operations: ligation and excision of the aneurysmal mass, restoration of the arterial tree with a venous graft or extra-anatomical bypass with prosthetic material. PMID- 3839337 TI - [Incidence of meniscal lesions in persons working underground in comparison with the rest of the population]. PMID- 3839338 TI - High muscle lipoprotein lipase activity in thyrotoxic patients. AB - Serum lipoprotein metabolism was studied in 7 women before and after treatment for thyrotoxicosis. Of the lipoprotein lipids, the triglyceride concentration in the low density lipoproteins (LDL) (P less than 0.01) and the cholesterol concentration in both LDL (P less than 0.01) and the high density lipoproteins (HDL) (P less than 0.05) increased significantly during treatment. These changes were accompanied by increases in apolipoprotein B (P less than 0.01) and A-I (P less than 0.05) concentrations in serum. Muscle lipoprotein lipase activity (LPLA) was increased in the thyrotoxic state by 46% (P less than 0.05) compared with the value after the patients had been rendered euthyroid, but adipose tissue LPLA was only 8% higher (ns) in the former state. The capacity for removal of exogenous fat, as determined by the fractional elimination rate (K2) at an iv fat tolerance test, was 23% higher in the thyrotoxic than in the euthyroid state (ns). It is suggested that the increase in muscle LPLA in the thyrotoxic state may be due to enhanced sensitivity to catecholamines. This may contribute to the increased capacity for plasma triglyceride turnover in thyrotoxicosis. PMID- 3839339 TI - Influence of sexually transmitted diseases on sterility and ectopic pregnancy. AB - Infective diseases are the most common cause of functional damage to the fallopian tubes with subsequent infertility, subfertility or ectopic pregnancy. In this paper the Author presents the results of a prospective long-term follow up on the reproductive events in a group of patients with acute salpingitis after sexually transmitted diseases. PMID- 3839340 TI - Ciramadol. The therapeutic dose range during balanced anesthesia. AB - In this study we attempted to determine whether ciramadol, a mixed opioid agonist antagonist, would provide a satisfactory analgesic supplementation to an anesthetic technique for major surgery. Fourteen surgical patients received a balanced anesthesia technique with nitrous oxide, oxygen and muscle relaxants following thiopental induction. Incremental doses of ciramadol were administered as indicated by the somatic, hemodynamic or other sympathetic responses to anesthetic and surgical stimulations. The mean requirements of ciramadol during surgery were inferred from each patient's time-dose curve. The mean loading dose of ciramadol needed was 2.5 +/- 0.4 mg/kg and for maintenance of the analgesic effects, ciramadol had to be administered at a rate of 0.41 +/- 0.09 mg/kg.h. The important transformation rate (50.4%/h) was suggestive of an analgetic ceiling effect. Despite the very large amounts of ciramadol given, the hemodynamic responses to noxious stimuli were not fully suppressed with hypertensive episodes occurring during surgery. Recovery of spontaneous ventilation appeared promptly after completion of surgery and no evidence of respiratory depression was seen. Minute ventilation, respiratory rate and arterial PaCO2 remained within normal limits up to two hours after the end of anesthesia. No incidence of adverse psychotomimetic effects was observed. PMID- 3839341 TI - Pes anserinus transfer for the unstable knee. A 7-year follow-up of 43 cases of ruptured anterior cruciate ligament. AB - On average 7 years postoperatively, we evaluated 43 consecutive patients who had had pesoplasty for chronic injury of the anterior cruciate ligament. Fourteen patients had undergone further surgery during the follow-up period; ten of these had extra- or intra-articular stabilizing procedures, and eight meniscectomies were performed after the index operation. At follow-up of the 33 knees that had not had additional stabilizing surgery, only one-third of the knees had normal radiograms, and the majority had anterolateral rotational instability (pivot shift) which, however, did not exclude satisfactory knee function. We conclude that improvement after transfer of the pes anserinus tendons was due to the simultaneous meniscectomy; we do not believe that the pesoplasty changed the natural course of the chronic rupture of the anterior cruciate ligament. PMID- 3839342 TI - Meniscus repair in knee ligament injuries. AB - One hundred and fifteen primarily operated patients with medial collateral ligament tears of the knee have been reviewed. Two-thirds of the patients had associated cruciate ligament injuries. In 59 knees, injuries of the medial meniscus were found. Suture of the medial meniscus was performed in 53 patients, while medial meniscectomy was done in only six cases. Knee function was evaluated by follow-up after 4 (2-8) years. Excellent or good results as evaluated by the Lysholm knee score were obtained in 86 per cent of the patients, with equally good results in those with meniscus suture as compared to those without meniscus injury. No secondary meniscectomies were performed. PMID- 3839343 TI - Middle ear implant for humans. AB - In humans, a partially implantable middle ear implant (MEI) will first be applied, followed by a wholly implantable MEI, since with the former only an induction coil and a vibrator (to the stapes' head) are used. One of the various advantages of the partially implantable MEI vis-a-vis air conduction hearing aids is that the tone quality is of much higher fidelity, with less noise. PMID- 3839344 TI - Stimulation of lung maturity: investigation of ambroxol in various animal models. AB - The surfactant or phospholipid lining of the alveolar surface is essential for lung function and airway stability. In premature neonates, the idiopathic respiratory distress syndrome (IRDS) is usually due to a prenatal deficiency in pulmonary surfactant. Experimental and clinical investigations with corticosteroids and other drugs were conducted to study various aspects of lung maturation. The present study of Ambroxol, a new compound with surfactant stimulating properties, was carried out on adult and foetal animals. In adult experimental animals an increase in the activity of Type II pneumocytes was shown by measuring various biochemical parameters. In models of premature animals comparable to clinical IRDS conditions, the antenatal treatment of foetal lambs and rabbits with Ambroxol enhanced lung maturation. PMID- 3839345 TI - Epidemiologic programs for computers and calculators. Use of Poisson regression models in estimating incidence rates and ratios. AB - Summarizing relative risk estimates across strata of a covariate is commonly done in comparative epidemiologic studies of incidence or mortality. Conventional Mantel-Haenszel and rate standardization techniques used for this purpose are strictly suitable only when there is no interaction between relative risk and the covariate, and tests for interaction typically are limited to examination for departures from linearity. Poisson regression modeling offers an alternative technique which can be used for summarizing relative risk and for evaluating complex interactions with covariates. A more general application of Poisson regression is its utility in modeling disease rates according to postulated etiologic mechanisms of exposures or according to disease expression characteristics in the population. The applications of Poisson regression analysis to problems of summarizing relative risk and disease rate modeling are illustrated with examples of cancer incidence and mortality data, including an example of a nonlinear model predicted by the multistage theory of carcinogenesis. PMID- 3839346 TI - Computer-assisted composition and reproduction of ophthalmic documentation. AB - We use computer software graphics (MacPaint) to create individualized drawings that can be reproduced as high-resolution printouts, kept in disk storage, or transmitted via telephone lines. PMID- 3839347 TI - Effect of 1,25-dihydroxyvitamin D3 on phospholipid composition of rat renal brush border membrane. AB - To analyze the effects of vitamin D on renal tubular cell membrane phospholipid metabolism, the effects of vitamin D depletion and repletion on renal brush border membrane (BBM) phosphatidylethanolamine (PE), phosphatidylcholine (PC), and phosphatidylinositol (PI) were studied. The PC content of BBM from kidneys of rats deprived of vitamin D for 5-6 wk was 33.5 +/- 2.2 nmol Pi/mg protein. This was significantly lower than the PC content of BBM from kidneys of rats supplemented with vitamin D2 for 2 wk, 41.0 +/- 0.4 nmol Pi/mg protein. Vitamin D depletion also decreased the content of BBM PE. The fatty acid composition of BBM PC was altered by vitamin D depletion. Vitamin D depletion increased palmitic acid and decreased stearic, linoleic, and arachidonic acid. Vitamin D repletion with a single physiological dose of 1,25(OH)2D3 (30 pmol), 16 h prior to study tended to increase membrane content of PC and significantly increased the linoleic acid content of the PC fraction. Single-dose vitamin D repletion with a pharmacological dose of 1,25(OH)2D3 (2.4 nmol) produced a significant increase in BBM content of PC and also significantly increased the linoleic acid content of PC. These results demonstrate that vitamin D deficiency affects PC and PE content of rat renal BBM and their fatty acid composition, and that vitamin D repletion with 1,25(OH)2D3 for 16 h partially normalizes the changes in PC. PMID- 3839349 TI - Atracurium and bradycardia. PMID- 3839348 TI - A re-examination of late outward plateau currents of cardiac Purkinje fibers. AB - Two outward currents, IX1 and IX2, are thought to be activated by depolarization of the Purkinje fiber. One of these, IX1, is presently believed to play a critical role in repolarization of the action potential. The IX currents were originally analyzed in voltage-clamp experiments in sheep Purkinje fibers. These experiments were designed to minimize interference by other currents, and it was assumed that changes of the net current were produced entirely by the IX currents. We have tried to repeat the original experiments and the analysis that led to acceptance of the existence and roles of the IX currents, without success. Moreover, tests of how membrane current should behave if the IX current hypothesis is correct did not give satisfactory results. Our data suggest the original conclusions about IX1 and IX2 may need substantial revision. PMID- 3839350 TI - Fibre types of M. pectineus of the dog (Canis familiaris). AB - As revealed by the NADH-diaphorase, M. pectineus of the dog possesses at least three main kind of fibres: 45.99% of small and slow contracting-red fibres, presenting an intense reaction, specially in the subsarcolemmal region; 45.55% of large and fast contracting-white fibres, presenting a less intense reaction. The remainder 8.46% fibres possess intermediate characteristics. These findings suggest that the movements of slow and fast contraction of M. pectineus are somewhat equilibrated. PMID- 3839351 TI - Atracurium-receptor kinetics: simple behavior from a mixture. AB - The apparent atracurium-receptor dissociation constant was assayed at the end plate region of isolated guinea pig muscles. In a parallel series of experiments, the ED50 for producing neuromuscular block in the lumbrical muscle was also determined. The ratio of these two values was similar to the ratio found with classical competitive neuromuscular blocking agents like d-tubocurarine or pancuronium. We conclude that the commercial preparation of atracurium, though a mixture containing isomers of different configurations, behaves kinetically in a manner indistinguishable from what would be expected from a single substance. PMID- 3839352 TI - Arrest of metastatic cells: agents promoting and inhibiting instant non-specific adhesion by fibronectin. AB - A standard mechanical test was used to quantify instant non-specific adhesion provided in vitro by fibronectin and to demonstrate how this adhesive found on circulating tumour cells can be decreased in potency by 65% when the adherents are coated with dipalmitoyl phosphatidylcholine (DPPC). By comparison, the binding force is increased 97% by addition of sialic acid found on the more potent metastatic cells. The very tacky adhesive resulting from this mixture now fails to be inhibited by DPPC but not by phosphatidylethanolamine found in blood (1). These factors could determine whether a metastatic cell will arrest upon initial contact with a potential host tissue. PMID- 3839353 TI - Surgical-adjuvant chemotherapy with AMSA in Lewis lung carcinoma bearing mice. AB - The effect of 4'-(9-Acridinylamino) methanesulfon-m-anisidide (AMSA) in combination with surgery was studied on Lewis lung carcinoma-bearing mice. The surgical removal of the primary tumor was performed at a late stage of growth and the drug was administered i.p. according to different schedules. Results of the present study indicate that the AMSA-surgery combination displays a modest effect against the Lewis lung carcinoma, slightly improved when chemotherapy is given before tumor removal, and that double courses of AMSA, given both before and after surgery, prove to be equally effective as a single preoperative chemotherapy. PMID- 3839354 TI - [Dehydration of aklavinone, PMR spectra of aklavinone and its dehydration products]. AB - The PMR 1H spectra of aklavinone, monoanhydroaklavinone and bisanhydroaklavinone were completely assigned with the use of the double resonance technique and the method of resolution enhancement (multiplication of the free induction decay by the Gauss function). It was shown that under mild conditions in the presence of hydrazine, aklavinone dehydrated at the C9-C10 bond and transformed into monoanhydroaklavinone. Under less mild conditions when akalavinone was heated at 250 degrees C, dehydration proceeded at the C9-C10 and C7-C8 bonds to form bisanhydroaklavinone. PMID- 3839355 TI - Identification and partial characterization of the xanthine oxidase transitions of the milk fat globule membrane. AB - Differential scanning calorimetry of bovine milk fat globule membranes (MFGM) yields five to eight transitions, depending on the conditions employed during isolation and assay of the membranes. Transitions A, B, and C were shown in a previous publication to derive from lipid melting, while transition D was found to stem from the unfolding of a structural protein termed butyrophilin [K. C. Appell, T. W. Kennan, and P. S. Low (1982) Biochim. Biophys. Acta 690, 243-250]. In this report we present evidence that the E1, E2, and F endotherms derive from the major MFGM protein, xanthine oxidase. Support for this contention derives from (i) thermal gel analysis; (ii) thermal inactivation analysis; (iii) comparison of the calorimetric properties of endotherms I, II, and III of purified xanthine oxidase with transitions E1, E2, and F of MFGM; (iv) comparison of the properties of a peculiar exotherm in scans of both the purified enzyme and MFGM; and (v) examination of the effects of specific ligands, reducing agents, and pH on both the xanthine oxidase and MFGM transition. The existence of three independent endotherms (I, II, and III) in purified xanthine oxidase demonstrates that the enzyme is composed of multiple independent domains. The interconversion of transitions I (E1) and II (E2) with a change in the redox conditions of the medium implies that these two transitions may be manifestations of the interconvertible dehydrogenase and oxidase forms of the enzyme, respectively. The relative independence of the I/II transitions from transition III further shows that only slight interaction between the major domains of xanthine oxidase exists. PMID- 3839356 TI - Malignant Mediterranean spotted fever. Report of a case with multiple organ failure, hypocalcemia, and euthyroid sick syndrome. AB - A patient with Mediterranean spotted fever presented an initial history of enteritis, pyrexia, and rash. He subsequently developed shock, multiple organ failure, thrombocytopenia, hypocalcemia with hypercalcitoninemia, and a euthyroid sick syndrome. PMID- 3839357 TI - Surgical pathology computerization. PMID- 3839358 TI - Gallstone souvenirs. PMID- 3839360 TI - Historical perspectives in pathology and laboratory medicine. PMID- 3839359 TI - Antibiotic susceptibility testing accuracy. Review of the College of American Pathologists Microbiology Survey, 1972-1983. AB - The antibiotic susceptibility testing results for the College of American Pathologists' Microbiology Surveys subscribers for 1981 to 1983 were compared for accuracy and problem areas with earlier data dating back to 1972. Disk diffusion (Kirby-Bauer) test accuracy was 96.3%, 96.4%, and 95.0% for the Bacteriology, Comprehensive, and Basic Surveys participants, respectively. The overall dilution test and automated system (Autobac I) accuracy was 95.8% and 93.8%, respectively. More laboratories (more than 40% of bacteriology and comprehensive laboratories) were using dilution minimum inhibitory concentration tests, usually frozen-form commercial systems. The current test accuracy was comparable with data for previous years, but the Basic Survey subscribers have demonstrated improvement since mid-1981. Several testing problems were identified, principally in the interpretive criteria available in national consensus publications such as the National Committee for Clinical Laboratory Standards M2-A3. Many of these problems have recently been resolved through the cooperation of the National Committee for Clinical Laboratory Standards' subcommittees and the College of American Pathologists' surveys. PMID- 3839361 TI - Are red blood cell indexes international? AB - Averages of patient red blood cell indexes have substantial application in hematology quality control. Little is known about the presence or the extent of geographic differences in these mean index values. If the average population indexes were found to be regionally and internationally similar, then starting quality control programs would be greatly simplified. Uniform indexes would also prove highly useful as independent monitors of national and international quality control trials. We analyzed the indexes of the patient populations attending university hospitals in Wales, California, and Japan by techniques that were independent of analyzer calibration. No significant differences were found in the mean red blood cell indexes of these three patient populations. The mean red blood cell volume, mean red blood cell hemoglobin, and mean red blood cell hemoglobin concentration rounded to the nearest 0.5 were, respectively, 89.5 fL, 30.5 pg, and 34.0 dL. PMID- 3839362 TI - Distribution of chromogranin and S100 protein in normal and abnormal adrenal medullary tissues. AB - The distribution of chromogranin and S100 protein was studied in 30 adrenal pheochromocytomas and 19 normal adrenal medullary tissues. Immunostaining in the tumors was compared with staining in sections of histologically normal medullae. Chromogranin showed diffuse cytoplasmic staining in all chromaffin cells. Chromogranin staining was consistently more intense in normal medullae, while less intense staining was present in most tumors from all four groups. S100 protein was present in the cytoplasm and nuclei of sustentacular cells surrounding chromaffin cells and in nerve branches. Many S100 protein-positive cells were present in normal medullae, in the two hyperplastic medullae, and in pheochromocytomas from patients with multiple endocrine neoplasia, type 2. Very few sustentacular cells were present in the other pheochromocytomas. These results indicate that S100 staining may be helpful in separating pheochromocytomas in patients with multiple endocrine neoplasia, type 2 disease from benign and malignant sporadic tumors. PMID- 3839363 TI - Neuropathology of oral-facial-digital syndromes. AB - A 3-month-old female infant with oral-facial-digital syndrome (OFD-I) was found to have extensive malformations of the brain and spinal cord. Our review of other case reports indicated that the most common central nervous system malformations found in OFD-I include cerebral epithelial (ependymal) cysts, agenesis of the corpus callosum, cerebral micropolygyria, and hypoplasia or dysplasia of the cerebellum, pons, and medulla. It is suggested that the individuals with OFD-I syndrome should be carefully studied clinically and pathologically for complex nervous system anomalies. PMID- 3839364 TI - Age and fibroplasia as preconditions for atheronecrosis in the human thoracic aorta. AB - The atheronecrotic core of an aortic plaque is an easily recognized structural feature when present in histologic sections. This feature tends to be associated with other characteristics of the aorta, chief among these being old age, marked intimal fibroplasia, and diminished numbers of intimal smooth-muscle cells. The statistical relationships among these aortic characteristics were examined in a series of 356 autopsies. Intimal fibroplasia tended to be directly proportional to age. The density of smooth-muscle cells tended to be inversely proportional to intimal fibroplasia. The total cellularity of the intima was almost constant without regard to age or intimal thickness. The probability of finding atheronecrosis in a randomly chosen sample from the lateral thoracic aorta was directly proportional to age and to intimal thickness after appropriate mathematical transformations. Against this background of what is usual, two atypical kinds of lesion were identified. PMID- 3839365 TI - Testis, epididymis, and spermatic cord in elderly men. Correlation of angiographic and histologic studies with systemic arteriosclerosis. AB - Autopsy specimens of the testes, epididymides, and spermatic cords from 20 adult young and 60 elderly men were studied by angiographic and histologic techniques. Testicular alterations in elderly men were correlated to the degree of aortic atheromatosis. Elderly men without manifest atheromatosis showed no lesions. Elderly men with slight atheromatosis showed a spiculated outline of the testicular artery and intraparenchymatous zones with scarce filling of small arteries. These zones exhibited peritubular and interstitial fibrosis. Elderly men with severe atheromatosis showed large zones of the testicular parenchyma with scarce filling of centrifugal and centripetal arteries that exhibited fibrosis of the tunica intima and lumen reduction; the testicular parenchyma appeared fibrosed with sclerosed tubules. Epididymal lesions were parallel to testicular lesions. These results suggest that systemic arteriosclerosis is involved in the decline of testicular function with age. PMID- 3839366 TI - Cerebrospinal fluid centrifuge analysis in primary amebic meningoencephalitis due to Naegleria fowleri. AB - We describe a case of primary amebic meningoencephalitis due to Naegleria fowleri. This is the first reported case, to our knowledge, in Missouri. Emphasis is placed on the morphologic identification of degenerating amebas in a cytospin preparation of cerebrospinal fluid using Wright's stain during the rapidly progressive meningoencephalitic stage. PMID- 3839367 TI - Malignant endovascular papillary angioendothelioma. Cutaneous borderline tumor. AB - Malignant endovascular papillary angioendothelioma, a rare but distinctive vascular tumor of childhood, was first described in 1969. It was termed malignant because of its mitotic activity, areas of necrosis, and demonstrated ability to metastasize to regional lymph nodes. Despite these features it had a uniformly good prognosis. We report an example of this lesion in a 6-year-old boy that does not show malignant histologic features. Based on its good long-term prognosis and variable histologic features, this lesion is better classified as a borderline vascular tumor. PMID- 3839368 TI - Unique finding of prostatic tissue in a benign cystic ovarian teratoma. AB - Benign cystic ovarian teratomas are neoplasms with a 46,XX karyotype originating from a single abnormal ovarian germ cell after the first meiotic division. Since these tumors lack the Y chromosome (required for production of the H-Y antigen that is presumably obligatory for embryonic male sexual differentiation), identifiable male sex organ structures should not be found in the tumor. We report a case in which prostatic tissue was identified in a benign cystic ovarian teratoma. PMID- 3839370 TI - Autofluorescence of eosinophilic globules in Kaposi's sarcoma. PMID- 3839369 TI - Infectious mononucleosis. Appendiceal lymphoid tissue involvement parallels characteristic lymph node changes. AB - Appendectomy with mesenteric lymph node biopsy was performed in an 18-year-old man because of acute abdominal pain that was subsequently attributed to infectious mononucleosis. The appendix demonstrated intense hyperplasia of the lymphoid tissue with marked expansion of the interfollicular lamina propria by a mixed diffuse proliferation of immunoblasts including Reed-Sternberg-like forms, together with large and small lymphoid cells. Germinal centers were reactive but inconspicuous. This pattern was distinguishable from malignant lymphoma and, like the characteristic lymph node changes, may be strongly predictive of infectious mononucleosis. Involvement of gut-associated lymphoid tissue may contribute importantly to abdominal symptomatology in this infection. PMID- 3839371 TI - Tissue reaction in bartonellosis may suggest Kaposi's sarcoma. PMID- 3839372 TI - Congenital polycystic tumor of the atrioventricular node. PMID- 3839373 TI - Papillary cystic tumor of the pancreas. PMID- 3839374 TI - All laboratory tests are not created equal. PMID- 3839375 TI - Pasteurella multocida in an infected tiger bite. AB - We report an unusual case of Pasteurella multocida wound infection caused by a tiger bite. We investigated the normal fang flora of large zoo cats and found P multocida in cultures from seven tigers, three of four leopards, and one lynx. Sucrose fermentation was found to be highly media dependent and unpredictable. The literature relative to P multocida in bite-wound infections is reviewed with special reference to bites by animals other than cats and dogs. With the addition of the present case, the animals involved have been two rats, two opossums, two lions, one horse, one rabbit, one boar, one panther, and one tiger. PMID- 3839376 TI - Behcet's syndrome. Immunopathologic and histopathologic assessment of pathergy lesions is useful in diagnosis and follow-up. AB - Behcet's syndrome is a complex multisystem disease that, due to the absence of a pathognomonic laboratory test, must be diagnosed using clinical criteria. Clinical pathergy testing, the induction of a sterile pustule 24 hours after cutaneous trauma, has been proposed as a useful adjunct to diagnosis. We have expanded this concept by showing the usefulness of examining pathergy lesions by routine and immunofluorescence microscopy in the diagnosis of nine patients with Behcet's syndrome. Furthermore, histopathologic pathergy assessments correlated with clinical disease activity and/or response to experimental oral thalidomide therapy in five of six patients with Behcet's syndrome who were retested. PMID- 3839377 TI - Carcinoma of the parotid gland with osteoclastlike giant cells. Immunohistochemical and ultrastructural observations. AB - We describe an unusual type of carcinoma of the parotid gland in a 67-year-old man. Because of rapid tumor growth, radical parotidectomy was done. Light microscopic study of the tumor revealed focal gland formation with transition to anaplastic carcinoma. Among the undifferentiated mononuclear cells and bizarre large cells were scattered many osteoclastlike multinucleated giant cells. Immunohistochemical studies on paraffin sections revealed positive staining for epithelial membrane antigen in the epithelial component; however, the multinucleated giant cells were clearly negative for this antigen. Reactions for other cell constituents (carcinoembryonic antigen, alpha 1-antitrypsin, alpha-1 antichymotrypsin, Leu-M1, Leu-M3, lysozyme, and factor VIII-related antigen) were negative in both epithelial and giant cell components of the tumor. Electron microscopy revealed poorly formed cell junctions and numerous microvilli on the surface of the mononuclear tumor cells and multinucleated giant cells, features considered not of diagnostic significance. Similar to carcinomas with osteoclastlike multinucleated giant cells in other organs, this parotid gland tumor has shown clinical and morphologic evidence of aggressive growth; pulmonary metastases developed and the patient died 28 months after radical surgery. PMID- 3839378 TI - Uterine leiomyosarcoma with myxoid stroma. AB - Myxoid leiomyosarcomas present a diagnostic problem. They are said to have low mitotic counts and are considered to be exceptions to the general rule that uterine smooth-muscle tumors with a mitotic rate of less than five per ten high power fields rarely recur. We present two cases of myxoid leiomyosarcoma, both of which show high mitotic counts. In addition, one of the cases presented initially as a typical leiomyosarcoma, but contained abundant myxoid stroma in the metastases. The role of the myxoid stroma in influencing prognosis in leiomyosarcomas is, as yet, uncertain. PMID- 3839379 TI - Phlegmonous gastritis associated with the acquired immunodeficiency syndrome/pre acquired immunodeficiency syndrome. AB - Unusual infections in the immunocompromised host often present a diagnostic dilemma to the physician. We describe a 29-year-old Haitian man with acquired immunodeficiency syndrome/pre-acquired immunodeficiency syndrome who died of phlegmonous gastritis. PMID- 3839380 TI - Fibrosing peritonitis in a drug abuser. AB - We report a case of fatal fibrosing peritonitis in a 28-year-old drug abuser. The extensive fibrosis, which was limited to the abdominal cavity, contained birefringent material. Silica was identified by spectrophotometric analysis. Silica is a component of talc (magnesium silicate) used as a drug filler. Relatively small amounts are known to induce fibrosis. The manner of introduction of this material into the peritoneal cavity is hypothetical and includes accidental direct peritoneal contamination during subcutaneous injections, a method used by drug abusers. PMID- 3839381 TI - Rheumatoid arthritis with bloody and cholesterol pleural effusion. AB - We describe a case of rheumatoid arthritis complicated by unilateral adhesive pleurisy and associated with bloody and cholesterol effusion in a 47-year-old man. Our case emphasizes that the diagnostician needs to consider rheumatoid disease in a differential diagnosis of bloody pleural effusion in patients with associated joint disease. Adequate histologic confirmation of the underlying pathology is required for definite diagnosis. PMID- 3839382 TI - Encephalitis associated with Rocky Mountain spotted fever. AB - We present a fatal case of Rocky Mountain spotted fever. Despite the presence of clinical and laboratory evidence suggesting widespread vasculitis, pathologic lesions were found only in the central nervous system. PMID- 3839383 TI - Lymphangioma presenting as a nasal polyp in an infant. AB - We describe a pedunculated lymphangioma presenting as an isolated nasal polyp in an 11-month-old male infant with light and electron microscopic findings. This lesion occurring in an infant must be distinguished from more common benign and malignant intranasal masses. PMID- 3839384 TI - Abnormal hematologic features in a live-born female infant with triploidy. AB - Complete trisomy is a fatal chromosomal anomaly commonly associated with multiple phenotypic abnormalities. The associated hematologic abnormalities that occur with this disorder are not as well known, however. We present a case of a live born female infant with this anomaly and discuss in detail the hematologic features of the peripheral blood. Abnormal physical features of the infant and the placenta are also discussed. PMID- 3839385 TI - Double heterozygosity for hemoglobins C and Lepore in an American black man. AB - We describe a patient doubly heterozygous for hemoglobin (Hb) C-Hb Lepore. To our knowledge, this is only the second case reported in the United States. The erythrocyte morphology and clinical findings were suggestive of Hb C-beta thalassemia. Following Hb electrophoresis, the correct diagnosis was postulated and was subsequently confirmed by a reference laboratory. We also present the family pedigree of Hb abnormalities. The morphologic alterations of the erythrocytes presented in this article, when seen in conjunction with the distinctive electrophoretic pattern, should suggest the abnormality in undiagnosed cases. PMID- 3839386 TI - Non-clear-cell adenocarcinoma arising in vaginal adenosis. AB - We report a case of adenocarcinoma of the vagina occurring in a woman without exposure to diethylstilbestrol. The adenocarcinoma arises in benign adenosis and lacks a clear-cell component. Both the adenosis and adenocarcinoma appear to be of mullerian origin. PMID- 3839387 TI - Coelomic fat ectopia in the liver. AB - We describe a pedunculated, mesothelial-covered liver mass contained in a mesothelial-lined sac. Microscopically, the mass was composed of mature adipose tissue that contained thick-walled arteries and large veins, fibrous tissue, and numerous bundles of smooth muscle. The lesion was thought to represent ectopic coelomic mesenchyme originally destined to form omentum or mesentery. The existence of this entity suggested that previously reported cases of hepatic adipose tissue masses (lipomas) might also have derived from ectopic coelomic mesenchyme. Along with the mesenchymal lesion in the liver, an unclassifiable mesenchymal tumor was present in the cerebellum. Whether the coexistence of the two mesenchymal tissue masses was fortuitous, or related, could not be determined from this solitary case. PMID- 3839388 TI - [Morphologic basis for cochlear implantation in the cat]. AB - The cat cochlear structure has been studied in 20 temporal bones. Owing to the preparations of the osseous cochleae investigated, certain anatomical parameters have been revealed; a detailed anatomo-topographic analysis on relations of the cochlear coils with the cochlear fenestra, the vestibular fenestra is presented. This gives a spatial notion on arrangement of the internal cochlear structures. The data obtained makes it possible to choose a precise place for electrode introduction and direction for their course along the coils. In its turn, this prevents trauma of the functional elements of the cochlea and, thus, contributes to stimulation effect. PMID- 3839389 TI - Retinopathy of prematurity. PMID- 3839390 TI - Prevention of intraocular pressure elevation following neodymium-YAG laser posterior capsulotomy. AB - Thirty-two eyes of 32 patients were treated with 0.5% timolol, 2% pilocarpine, or normal saline five and 30 minutes following neodymium-YAG laser posterior capsulotomy in a randomized, double-masked study. Mean maximum intraocular pressure (IOP) elevation was 8 +/- 2 mm Hg following treatment with normal saline, 5 +/- 3 mm Hg following treatment with 2% pilocarpine, and 1 +/- 2 mm Hg following treatment with 0.5% timolol. Fewer patients treated with 0.5% timolol developed an IOP elevation of 5 mm Hg or more than control patients. On aphakic patient treated with 0.5% timolol developed a maximum IOP greater than or equal to 40 mm Hg. We found that treatment with 0.5% timolol after neodymium-YAG laser posterior capsulotomy provides partial protection from IOP elevation. PMID- 3839391 TI - Lowering blood cholesterol to prevent heart disease. NIH Consensus Development Conference statement. PMID- 3839392 TI - Progress report on nationwide networking system of perinatal summary records. PMID- 3839393 TI - 1,25 dihydroxyvitamin D3 increases plasma magnesium and calcium in sheep fed liquid diets low in calcium and magnesium. AB - Sheep given a liquid diet low in calcium and magnesium by infusion directly into the abomasum developed concurrent hypocalcaemia and hypomagnesaemia, with plasma concentrations of calcium and magnesium decreasing to 2.0 and 0.4 mmol/l respectively. Treatment of these hypomagnesaemic sheep with 1,25 dihydroxyvitamin D3 (1,25(OH)2 D3) increased the plasma calcium, magnesium and phosphorus concentrations with plasma calcium increasing to 2.5 mmol/l and plasma magnesium to 0.6 mmol/l. Plasma magnesium increased despite a small but significant increase in the daily excretion of magnesium in the urine, and the amount of magnesium derived from either bone and/or intestine must have been greater than the amount lost in the urine. Since in other experiments we have demonstrated that plasma calcium remains within the normal range when a liquid diet adequate in magnesium but low in calcium is infused, these results imply that either synthesis of and/or end organ response to 1,25(OH2) D3 is impaired in magnesium deficient sheep. PMID- 3839394 TI - cDNA cloning of mRNAS which increase rapidly in human lymphocytes cultured with concanavalin-A and cycloheximide. AB - To induce or "superexpress" genes involved in the entry of cultured GO lymphocytes into the G1-phase of the cell cycle, the cells were treated for 2 hours with a lectin (concanavalin-A) and a protein synthesis inhibitor (cycloheximide). A cDNA library was generated from small quantities of RNA by the high efficiency method of Gubler & Hoffman (1). 30,000 colonies were screened for differential hybridization to cDNA corresponding to treated cultures, but not to cDNA corresponding to control cultures. 50 recombinants were identified on this basis. One recombinant (#7) corresponded to mRNA (2150 base pairs) which was increased by cycloheximide alone, but was not increased by concanavalin A. Another recombinant (#19) corresponded to 2 mRNAs (980 and 1120 base pairs) one or both of which were increased either by concanavalin-A or by cycloheximide. It is speculated that the latter mRNAs are products of a locus which is activated when the concentration of a repressor is decreased by concanavalin-A or cycloheximide. PMID- 3839395 TI - The regulatory and catalytic subunits of rat liver cyclic AMP-dependent protein kinases respond differently to thyroparathyroidectomy and 1 alpha,25 dihydroxyvitamin D3. AB - The regulatory subunits of cytoplasmic and nuclear cyclic AMP-dependent protein kinases increased, while the holoenzyme activities fell in the livers of thyroparathyroidectomized (TPTX) rats. 1 alpha,25-dihydroxyvitamin D3 reversed this TPTX-induced decline in holoenzyme activities. TPTX also prevented the increase in holoenzyme activities, but not the increase in the concentration of regulatory subunits that normally occurs in partially hepatectomized animals. An injection of 1 alpha, 25-dihydroxyvitamin D3 into these TPTX animals, at the time of partial hepatectomy restored the increases in holoenzyme activities, without affecting the changes in regulatory subunits. Thus, the synthesis of regulatory and catalytic subunits can be uncoupled by TPTX and 1 alpha, 25-dihydroxyvitamin D3 appears to selectively control the activity of C subunits. PMID- 3839396 TI - Structure of mouse interferon-beta cDNA clones: sequence rearrangements in a cloned cDNA. AB - A fraction enriched in interferon (IFN) mRNA was prepared from mouse C243-3 induced cells and was used for the construction of a cDNA library. Two plasmids were obtained after screening by differential colony hybridization and IFN mRNA hybridization-selection and translation. The nucleotide sequences of the cDNA inserts revealed that both were partial copies of IFN-beta mRNA. The cDNA 861 corresponds to the entire 3' nontranslated region of the mRNA while the cDNA 2939 consists of rearranged translated regions of IFN mRNA. A mechanism for the rearrangement events during cDNA synthesis is proposed. A chromosomal DNA fragment hybridizing to cDNA 2939 was identified by screening a mouse genomic library. PMID- 3839397 TI - Irreversible inhibition of adenylate cyclase by 5'-(p-bromomethylbenzoyl) adenosine. AB - The effect of 5'-(p-bromomethylbenzoyl) adenosine (pBMBA) on adenylate cyclase from bovine caudate nucleus membranes was studied. Adenylyl-5' methylenediphosphonate (but not adenosine) protected adenylate cyclase against inactivation by this compound. The degree of pBMBA-induced inhibition of adenylate cyclase increased in the presence of Mg2+. 5'-(p-fluorosulfonylbenzoyl) adenosine (pFSBA) was also a specific irreversible inhibitor of adenylate cyclase. It was demonstrated that the enzyme inactivated by pFSBA completely restored its activity under the action of dithiothreitol. The results obtained are indicative of the presence of the -SH group in the enzyme active site. PMID- 3839398 TI - Muscarinic receptors in isolated gastric fundic mucosal cells. Binding-activity relationships. AB - Muscarinic receptors are involved in the control of gastric acid secretion. The characteristics of (3H)-N-methyl-scopolamine [(3H)-NMS] binding to isolated cells from rabbit fundic gastric mucosa and inhibition of this binding by muscarinic agonists, antagonists and other pharmacological agents known to regulate acid secretion are reported. Specific binding for (3H)-NMS was described: antagonists interact with high affinity sites (KD = 0.5 nM) whereas binding curves for agonists clearly deviated from the simple mass action isotherm with a flattening of the curve suggesting the presence of more than one class of sites. The low affinity sites for agonists are in the micromolar range. Pirenzine, a gastroselective antimuscarinic compound, known to differentiate between M1 and M2 sites, inhibited (3H)-NMS binding with an IC50 of 0.05 microM. On the same gastric cell population, muscarinic agonist carbachol stimulated (14C) aminopyrine accumulation in a dose-dependent manner with an ED-50 of 10 microM, value close to that needed to 50% inhibit (3H)-NMS binding. This stimulation was competitively inhibited by muscarinic antagonists and pA2-values for atropine, QNB and pirenzepine, calculated from linear Schild plots, were in the following order: 9.2 for atropine, 8.6 for QNB and 7.0 for pirenzepine. In conclusion, fundic gastric mucosal cells from rabbit, isolated with collagenase and EDTA, contained specific muscarinic receptors coupled to the acid secretory mechanism and pirenzepine interact with these receptors with an intermediate affinity suggesting the presence of functional M2-sites. PMID- 3839399 TI - Actions of flavonoids and the novel anti-inflammatory flavone, hypolaetin-8 glucoside, on prostaglandin biosynthesis and inactivation. AB - The newly identified plant-derived flavone-glycoside hypolaetin-8-glucoside, which has anti-inflammatory and gastric ulcer protective properties, and its corresponding aglycone, hypolaetin, were tested for effects on prostaglandin biosynthesis and degradation. They were compared with four other flavonoids, viz. rutin and its corresponding aglycone, quercetin, and the aglycones isoscutellarein and kaempferol. Over the range 10-1000 microM the glycosides rutin and hypolaetin-8-glucoside stimulated prostaglandin formation by sheep seminal vesicle microsomes incubated with radiolabelled arachidonic acid; the other compounds were essentially inactive. Over 5-5000 microM rutin and hypolaetin-8-glucoside enhanced the release of prostacyclin (and other prostanoids) from fragments of rat caecum incubated in the absence of additional arachidonic acid; the four aglycones compounds did not stimulate prostacyclin release but some reduced it at 5000 microM. However, the glycosides did not affect the enzymatic inactivation of radiolabelled prostaglandin F2 alpha by semi purified bovine lung prostaglandin 15-hydroxydehydrogenase (PGDH) or in 100,000 g supernatants prepared from homogenised rat stomach. Three of the four aglycones (quercetin, kaempferol, isoscutellarein, in descending order of potency) were inhibitory to PGDH with ID50 values in the range 130-2100 microM. The results show that the capacity of flavonoids to enhance prostaglandin formation is associated with the presence of glycosidic substitution, whereas PGDH inhibition requires its absence. The relevance of this biochemical profile of hypolaetin-8 glucoside to its anti-inflammatory gastroprotective effects in vivo is discussed. PMID- 3839400 TI - Effect of centhaquine on spontaneous and evoked norepinephrine release from isolated perfused rabbit heart. AB - 1-[Bis(2-quinolyl)-ethyl]-4-m-tolylpiperazine (centhaquine), a centrally acting hypotensive agent, was studied for its effect on spontaneous and evoked release of norepinephrine (NE) from the rabbit heart. Spontaneous release of NE as well as its release evoked by potassium chloride (81 X 10(-3) mol/l), tyramine hydrochloride (2.88 X 10(-5) mol/l), dimethyl phenyl piperazinium iodide (DMPP, 3.18 X 10(-5) mol/l), acetylcholine chloride (1 X 10(-4) mol/l) and amphetamine sulfate (7.48 X 10(-5) mol/l) from isolated perfused rabbit heart was studied. Centhaquine (0.1, 1.0 and 10.0 micrograms/ml) caused an initial increase followed by inhibition of spontaneous NE output. It also significantly inhibited the NE release evoked by KCl, DMPP and acetylcholine but not tyramine and amphetamine evoked release. It is concluded that centhaquine predominantly inhibits the neuronal NE release. PMID- 3839401 TI - Unusual manifestations of neonatal hyperthyroidism. PMID- 3839402 TI - An integrated database environment for clinical research support. PMID- 3839403 TI - The development of a gynecology data collection system. PMID- 3839404 TI - [Use of an antitussive drug in pulmonary pathology]. PMID- 3839405 TI - Demodectic oviposition in the eyelid. AB - The normally torpid existence of demodectic mites of the eyelid changes with the onset of oviposition. There occurs a burst of activity characterized by flexion, extension and rotation. PMID- 3839406 TI - Histogenesis of hyperosteoidosis in 1,25(OH)2D3-treated rats fed high levels of dietary calcium. AB - The purpose of this investigation was to determine by sequential quantitative morphometry the histogenesis of metaphyseal changes induced in rats fed high levels of dietary calcium and treated with pharmacologic doses of 1,25(OH)2D3. Young adult female rats were placed on a diet containing 2.5% calcium and 0.3% phosphorus and administered either ethanol or 135 ng (5 units) 1,25(OH)2D3 in ethanol IP daily for 10 days. Rats were terminated at Days 1, 2, 3, 4, 6, 8, and 10. At Day 1 the proximal tibias from rats treated with 1,25(OH)2D3 had a dramatic increase in osteoclasts/mm total trabecular surface perimeter compared with placebo-treated rats. Osteoclast numbers decreased in 1,25(OH)2D3-treated rats to the levels in placebo-treated rats by Days 3 and 4 and decreased significantly below placebo-treated levels at Days 6, 8, and 10. Active resorbing surface was significantly increased at Days 1 and 2 and decreased at Days 8 and 10 in 1,25(OH)2D3-treated rats compared with placebo-treated rats. From Day 4 through Day 10 in 1,25(OH)2D3-treated rats, there was a progressive increase in osteoblasts/mm total trabecular surface perimeter, osteoid surface, active osteoid surface, and metaphyseal osteoid. Metaphyseal osteoid increased markedly at Days 8 and 10 in 1,25(OH)2D3-treated rats and caused a significant increase in the amount of osseous tissue in the metaphysis. Metaphyseal mineralized bone, however, was not consistently affected by 1,25(OH)2D3 treatment. Serum calcium and phosphorus were elevated in 1,25(OH)2D3-treated rats at more time periods. In rats fed high levels of dietary calcium, repeated supraphysiologic doses of 1,25(OH)2D3 result in a net increase in metaphyseal osseous tissue, predominantly osteoid.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839407 TI - Influence of tubocurarine, pancuronium and atracurium on bronchomotor tone. AB - Specific airways conductance (s.Gaw) was measured using the forced airflow oscillation method to study the effects of tubocurarine, pancuronium and atracurium. Twenty-seven patients undergoing elective surgery were randomly allocated to receive one of the three drugs. A statistically significant mean change in s.Gaw from the baseline values for each drug was apparent only after administration of atracurium (at 6 min) (P less than 005). Some individuals given atracurium or tubocurarine either showed large decreases in s.Gaw or cutaneous flushing, but only one patient showed both. Pharmacological release of histamine may be confined to individual tissues in these instances. PMID- 3839408 TI - Metastatic carcinoma of bronchus associated with Hashimoto's thyroiditis. PMID- 3839409 TI - Immune thrombocytopenia in pregnancy and the newborn. PMID- 3839410 TI - Retinopathy of prematurity: review of a four-year period. AB - For a four-year period the development of retinopathy of prematurity (ROP) was determined among neonates considered at risk of acquiring this condition. Fifty six out of 249 premature infants developed some degree of ROP. Comparison of these infants with a group of 56 controls, admitted to hospital in the same period and matched for sex, birth weight, and gestational age, showed significant differences for sepsis, blood transfusions, and the period of oxygen monitoring in relation to the period of oxygen administration. The most consistent factor associated with the development of ROP was gestational age at the time of birth, though no gestational age group was entirely devoid of ROP. This suggests that screening for ROP should not be restricted to high-risk premature infants only. PMID- 3839411 TI - Orbital rhabdomyosarcoma: improved survival with combined pulsed chemotherapy and irradiation. AB - Three cases of embryonal orbital rhabdomyosarcoma are presented in which two cases had intracranial extension. All three are alive and well on follow-up several years after completing a 12-month course of combined pulsed chemotherapy and irradiation. The improved prognosis even in parameningeal involvement is emphasised. PMID- 3839412 TI - Comparative study of the gel phases of ether- and ester-linked phosphatidylcholines. AB - Calorimetric, X-ray diffraction, and 31P nuclear magnetic resonance (NMR) studies of aqueous dispersions of 1,2-dihexadecyl-sn-glycero-3-phosphocholine (DHPC) gel phases at low temperatures (-60 to 22 degrees C) show thermal, structural, and dynamic differences when compared to aqueous dispersions of 1,2-dipalmitoyl-sn glycero-3-phosphocholine (DPPC) gel phases at corresponding temperatures. Differential scanning calorimetry of DHPC dispersions demonstrates a reversible, low-enthalpy "subtransition" at 4 degrees C in contrast to the conditionally reversible, high-enthalpy subtransition observed at 17 degrees C for annealed DPPC bilayers. X-ray diffraction studies indicate that DHPC dispersions form a lamellar gel phase with dav congruent to 46 A both above and below the "subtransition". It is suggested that the reduced dav observed for DHPC (46 A as compared to 64 A in DPPC) is due to an interdigitated lamellar gel phase which exists at all temperatures below the pretransition at 35 degrees C. 31P NMR spectra of DHPC gel-phase bilayers show an axially symmetric chemical shift anisotropy powder pattern which remains sharp down to -20 degrees C, suggesting the presence of fast axial diffusion. In contrast, 31P spectra of DPPC bilayers indicate this type of motion is frozen out at approximately 0 degrees C. PMID- 3839413 TI - Location and mobility of ubiquinones of different chain lengths in artificial membrane vesicles. AB - Ubiquinone (UQn with n = 2, 3, or 10 isoprenoid groups) was incorporated into small, sonicated vesicles made of dipalmitoylphosphatidylcholine (DPPC) or dimyristoylphosphatidylcholine (DMPC). (1) The accessibility of oxidized UQ in DPPC or DMPC vesicles to the reductant sodium borohydride (NaBH4), measured by UV spectroscopy, was UQ2 greater than UQ3 greater than UQ10 (DPPC) and UQ2 greater than UQ3 approximately UQ10 (DMPC). (2) Catalysis of the reduction of entrapped ferricyanide by exogenous NaBH4 was more effective with UQ2 than UQ10 but was slower with all quinones than reduction by added dithionite. (3) The methoxy protons of UQ2 and UQ3 in DPPC and DMPC vesicles exhibited a single NMR resonance centered at approximately 3.95 ppm, whereas the methoxy groups of UQ10 gave rise to two separate proton resonances, at 3.93 ppm and a more narrow resonance at 3.78 ppm. The UQ10 population characterized by the 3.78 ppm resonance was present at a higher concentration in DPPC than in DMPC vesicles and was relatively insensitive to reduction by NaBH4. (4) UQ10 perturbed the melting temperature (Tm) of DPPC vesicles to a smaller extent (delta Tm = -1 degrees C) than did UQ2 and UQ3 (delta Tm = -3 to -4 degrees C). The combined UV and NMR data imply the following: The UQ10 pool characterized by the 3.78 ppm peak corresponds to a more mobile UQ10 fraction that is not reduced by NaBH4 in 2-3 min and is thought to be localized close to the center of the DPPC bilayer since it has little effect on the DPPC Tm.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839414 TI - Ion selectivity of temperature-induced and electric field induced pores in dipalmitoylphosphatidylcholine vesicles. AB - Temperature and electric field are known to alter the permeability of the bilayer membrane in phospholipid vesicles. A study of cation selectivity of these membrane pores is reported for multilamellar liposomes (MLV) and unilamellar large vesicles (ULV, 95 +/- 5 nm diameter) of dipalmitoylphosphatidylcholine (DPPC). The permeability of ULV to Rb+ was 1.0 X 10(-6) micrograms/s at 22 degrees C and increased to 1.1 X 10(-5) micrograms/s at the gel to liquid crystalline transition temperature (Tm) of the bilayer, at 42 degrees C. The permeability of ULV to Rb+ continued to increase beyond the Tm and reached 1.0 X 10(-4) micrograms/s at 56 degrees C, a 100-fold increase over the permeability at 22 degrees C. In contrast, the permeability of ULV to Na+ showed a local maximum of 6.0 X 10(-6) micrograms/s at 42 degrees C and decreased at temperatures higher or lower than the Tm. For MLV, the permeability to both Rb+ and Na+ peaked dramatically at the phase transition temperature, 42 degrees C, and subsided at lower and higher temperatures. When ULV were exposed to an electric field, the permeability to Rb+, Na+, and sucrose surged at a field strength of 30 kV/cm; 30 kV/cm can induce a transmembrane potential of 210 mV. In ULV, the electrically perforated lipid bilayer exhibited selectivity for Rb+ over Na+ only at a narrow electric field range, between 31 and 33 kV/cm. For MLV, no well-defined breakdown voltage was recorded.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839415 TI - Human serum amyloid A (SAA): biosynthesis and postsynthetic processing of preSAA and structural variants defined by complementary DNA. AB - To study structural variants of human serum amyloid A (SAA), an apoprotein of high-density lipoprotein, complementary DNA clones were isolated from a human liver library with the use of two synthetic oligonucleotide mixtures containing sequences that could code for residues 33-38 and 90-95 of the protein sequence. The SAA-specific cDNA clone (pA1) contains the nucleotide sequence coding for the mature SAA and 10 amino acids of the 18-residue signal peptide. It also includes a 70 nucleotide long 3'-untranslated region and approximately 120 bases of the poly(A) tail. The derived amino acid sequence of pA1 is identical with the alpha form of apoSAA1. A fragment of pA1 containing the conserved (residues 33-38) region of SAA also hybridized with RNA from human acute phase liver and acute phase stimulated, but not unstimulated, mouse and rabbit liver. In contrast, a fragment corresponding to the variable region hybridized to a much greater extent with human than with rabbit or murine RNA. Human acute phase liver SAA mRNA (approximately 600 nucleotides in length) directs synthesis of preSAA (Mr 14 000) in a cell-free translating system. In a Xenopus oocyte translation system preSAA is synthesized and processed to the mature Mr 12 000 product. The complete 18 amino acid signal peptide sequence of preSAA was derived from sequencing cDNA synthesized by "primer extension" from the region of SAA mRNA corresponding to the amino terminus of the mature product. Two other SAA-specific cDNA clones (pA6 and pA10) differed from pA1 in that they lack the internal PstI restriction enzyme site spanning residues 54-56 of pA1.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839416 TI - Thermotropic behavior of binary mixtures of dipalmitoylphosphatidylcholine and glycosphingolipids in aqueous dispersions. AB - The thermotropic behavior of mixtures of dipalmitoylphosphatidylcholine (DPPC) with natural glycosphingolipids (galactosylceramide, phrenosine, kerasine, glucosylceramide, lactosylceramide, asialo-GM1, sulfatide, GM3, GM1, GD1a, GT1b) in dilute aqueous dispersions were studied by high sensitivity differential scanning calorimetry over the entire composition range. The pretransition of DPPC is abolished and the cooperativity of the main transition decreases sharply at mole fractions of glycosphingolipids below 0.2. All systems exhibit non-ideal temperature-composition phase diagrams. The mono- and di-hexosylceramides are easily miscible with DPPC when the proportion of glycosphingolipids in the system is high. A limited quantity (1-6 molecules of DPPC per molecule of glycosphingolipid (GSL) can be incorporated into a homogeneously mixed lipid phase. Domains of DPPC, immiscible with the rest of a mixed GSL-DPPC phase that shows no cooperative phase transition, are established as DPPC exceeds a certain proportion in the system. One negative charge (sulfatide) or four neutral carbohydrate residues (asialo-GM1) in the oligosaccharide chain of the glycosphingolipids results in phase diagrams exhibiting coexistence of gel and liquid phases over a broad temperature-composition range. Systems containing gangliosides show complex phase diagrams, with more than one phase transition. However, no evidence for phase-separated domains of pure ganglioside species is found. The thermotropic behavior of systems containing DPPC and glycosphingolipids correlates well with their interactions in mixed monolayers at the air/water interface. PMID- 3839417 TI - Molecular origin of biphasic response of main phase-transition temperature of phospholipid membranes to long-chain alcohols. AB - A statistical mechanical theory is proposed which explains the molecular mechanism of the nonlinear response of the phase-transition temperature of phospholipid vesicle membranes to added 1-alkanols. By assuming that the free energy of transfer of 1-alkanols from the aqueous phase to the membrane and the interaction energy between 1-alkanol molecules are linear functions of alkanol alkyl chain-length, the nonlinear behavior is explained in the Bragg-Williams approximation. For dipalmitoylphosphatidylcholine vesicle membranes, the theory reveals a larger free energy of transfer of 1-alkanols from the aqueous phase to the solid-gel membrane than to the liquid-crystalline membrane when the number of carbon atoms of 1-alkanol exceeds 12. When the intermolecular interaction force between 1-alkanol molecules residing in the gel phase is stronger than the interaction force between those residing in the liquid-crystalline phase, the ligand effect is to tighten the lipid matrix structure, causing the transition temperature to rise. The interaction force is a quadratic function of 1-alkanol concentration; hence, the response of the transition temperature to the 1-alkanol concentration is nonlinear. At low concentrations of the long-chain 1-alkanols that predominantly elevate the transition temperature, this intermolecular interaction force is negligible. In this case, the entropic effect of the incorporated ligand molecules, which loosens the lipid matrix, predominates, and the transition temperature decreases. The biphasic action of long-chain 1 alkanols originates from the balance of these two opposing effects: entropy and intermolecular interaction. PMID- 3839418 TI - Changes in biochemical characteristics and pattern of lectin binding of alveolar type II cells with time in culture. AB - When cultured on plastic culture dishes for several days, alveolar type II cells gradually lose both their morphologic and biochemical identifying characteristics. Although type II cells cultured on a matrix derived from corneal endothelial cells have previously been reported to retain lamellar bodies for 7 10 days in culture, the ability of type II cells cultured on matrix to synthesize surfactant lipids has not been previously studied. We therefore measured the phospholipid content and the distribution of [14C]acetate into classes of lipids by type II cells maintained in culture. We found no differences between cells cultured on plastic or on matrix. We then studied the binding to type II cells in culture of Maclura pomifera and Ricinus communis I, lectins specific in vivo for type II and type I cells, respectively. We found that the cells progressively bind less M. pomifera and more R. communis I. The change in pattern of lectin binding occurs whether cells are cultured on plastic or matrix, whether lectins are conjugated with fluorescein, rhodamine or ferritin, or whether cells are cultured in the presence or absence of serum. We conclude that type II cells cultured on either tissue culture plastic or matrix derived from corneal endothelial cells lose the ability to synthesize and contain surfactant phospholipids, and, at least in their pattern of lectin binding, become similar to type I cells. PMID- 3839419 TI - [Blood pressure decrease by computer-controlled infusion of vasodilators]. PMID- 3839421 TI - Computer simulation of DNA supercoiling in a simple elastomechanical approximation. PMID- 3839420 TI - An experimental comparison between the continuum and single jump descriptions of nonactin-mediated potassium transport through black lipid membranes. AB - The continuum and single jump treatments of ion transport through black lipid membranes predict experimentally distinguishable results, even when the same mechanistic assumptions are made and the same potential-distance profile is used. On the basis of steady-state current-voltage curves for nonactin-mediated transport of potassium ions, we find that the continuum model describes the data accurately, whereas the single jump model fails to do so, for all cases investigated in which capacitance measurements indicate that the membrane thickness varies little with applied potential. PMID- 3839422 TI - Identification and measurement of paraprotein polymers by high performance gel filtration chromatography. AB - An evaluation of Superose 6, a new high performance gel filtration medium, has been made for the rapid separation and quantitation of paraprotein polymers. There is a significant correlation between relative serum viscosity and the concentration of polymeric IgA as demonstrated by FPLC using the Superose 6 columns. The retention times of the columns are highly reproducible and allow good resolution of polymers and provide a simple way of separating IgG3 from albumin. Scaling up to the preparative Superose 6B could be achieved with little loss of resolution. PMID- 3839423 TI - [Morphofunctional status of the thymus in guinea pigs exposed to thymus and bone marrow preparations]. AB - Study of the effect of the polypeptide thymic factor (thymalin) and the polypeptide bone marrow factor (hemalin) on the morphofunctional status of the thymus in guinea-pigs has shown that injection of thymalin into animals increases the count of small lymphocytes whereas injection of hemalin the count of medium sized lymphocytes and lymphoblasts. Injection of thymalin magnifies the size of the nuclei of the reticuloendothelial cells. PMID- 3839425 TI - [Glaucoma and endocrine myopathy]. PMID- 3839426 TI - [Possible applications of the Nd: Yag laser in glaucoma]. PMID- 3839424 TI - Ten-year experience with CMF-based adjuvant chemotherapy in resectable breast cancer. AB - The paper reviews all adjuvant studies carried out since 1973 at the Milan Cancer Institute in women with resectable breast cancer and positive axillary nodes. The updated results essentially confirm previous findings, and indicate that CMF based chemotherapy is able to exert a prolonged therapeutic activity in a fraction of patients bearing micrometastases. In particular, the first randomized study testing no postoperative chemotherapy vs 12 CMF cycles, showed a 10-year relapse free survival (RFS) of 31.4% vs 43.4% (P less than 0.001) and an overall survival (OS) of 47.3% vs 55.2% (P = 0.10), respectively. Findings related to subsets indicated that RFS and OS benefit was significant in premenopausal and not in postmenopausal women, and in both treatment groups the observed findings were always related to the number of histologically positive nodes. On relapse, salvage therapy administered to controls failed to produce superior results compared to those achieved in the CMF group. The 8-year results of the second study testing 12 vs 6 CMF cycles failed to show a significant difference between the two treatment groups. This indicated that the maximum tumor cell kill occurred during initial chemotherapy cycles. In the third study, carried out only in postmenopausal women less than or equal to 65 years, sequential non-cross resistant combinations (CMFP----AV) at full dose achieved superior results compared to CMF in the subset with limited nodal extent. Acute side effects were moderate and no delayed morbidity, including increased incidence of second neoplasms, was observed. We conclude that the tumor cell heterogeneity, and in particular primary drug resistance, represents the major obstacle to adjuvant systemic therapy in high risk breast cancer. Current results suggest that 6 cycles of CMF can be considered a simple, safe, and moderately effective adjuvant therapy. Future trials should contemplate treatments of different intensity related to major prognostic subsets, while in women at very high risk of early relapse more vigorous drug regimens should be concentrated within the first six months from local-regional therapy. PMID- 3839427 TI - [Ocular microsurgery with the Nd-YAG laser in the treatment of secondary and tertiary cataracts]. PMID- 3839430 TI - A radiotherapy treatment planning check program. PMID- 3839429 TI - A computer-calculated difference tissue compensator system. PMID- 3839428 TI - Fluorescent markers of hypoxic cells: a comparison of two compounds on three cell lines. AB - Two compounds, nitroakridin 3582 (NA) and a 3-nitro-naphthalimide (DM113), have been tested as potential fluorescent markers for hypoxic cells. Cellular fluorescence in three cell lines (V79-379A, WHF1B, EMT6) was measured by flow cytometry and high-performance liquid chromatography (HPLC) after incubating the cells with the drugs for various times in air or hypoxia. In all three cell lines, both drugs showed greater fluorescence in hypoxic than in oxic cells. There were, however, differences between the cell lines in respect of the magnitudes of hypoxic and oxic cell fluorescence and in the ratio of hypoxic to oxic fluorescence. Differences in hypoxic cell fluorescence were due to differences in the rate and extent of nitroreduction. Drug uptake and DNA content per cell were relatively unimportant factors in determining the magnitude of fluorescence. There was not a good correlation between cytotoxicity of the drugs and hypoxic fluorescence. Nitroakridin was more toxic to hypoxic than to aerated cells but the reverse was true for DM113. The dependence of fluorescence and radiosensitivity on oxygen concentration were compared for the three cell lines and only small differences between the "K"-curves for the two end-points were found. Two problems with the present compounds which should be addressed in designing future fluorogenic compounds as hypoxic markers were oxic cell fluorescence and leakage of fluorescent products from hypoxic cells. PMID- 3839431 TI - Computerizing the medical office. PMID- 3839432 TI - Effectiveness of a six-drug regimen (APO) without local irradiation for treatment of mediastinal lymphoblastic lymphoma in children. AB - Fourteen children with mediastinal lymphoblastic lymphoma (MLL) were treated with the six-drug APO protocol. This regimen includes aggressive intermittent chemotherapy and prophylactic central nervous system therapy. Mediastinal irradiation was given only for emergency relief of mediastinal compression (two children) or for incomplete resolution of mediastinal widening with chemotherapy (one child). All 14 patients achieved complete remission; only 1 has relapsed. Toxicities were not severe. APO is effective therapy for children with MLL. APO should receive further trials in children and adults with T-cell lymphoblastic lymphomas. PMID- 3839433 TI - Endodermal sinus tumor of the vagina. The role of primary chemotherapy. AB - Endodermal sinus tumor of the vagina, a rare pediatric malignancy, was managed with primary chemotherapy (vincristine, dactinomycin, cyclophosphamide [VAC]) followed by local excision without radical surgery or pelvic irradiation. Treatment-related complications were acceptable, and there is no evidence of disease 30 months after discontinuing all therapy (50 months after diagnosis). As a treatment option, primary chemotherapy is viewed as a highly attractive alternative modality, preserving potential reproductive and sexual function in long-term survivors, and appears to be the treatment of choice. PMID- 3839435 TI - Two 14q+ chromosomes in malignant lymphoma: crucial cytogenetic changes on 14q. AB - We encountered a 36-year-old white male patient with poorly differentiated lymphocytic lymphoma, whose lymph node cells showed a clonal cytogenetic change involving chromosome #14, i.e., 47,XY, + 2,der(14),t(14;14)(14pter----14q32;14q24 ---14q32++ +). In addition to this change, cells with a translocation between chromosomes #2 and another #14 [t(2;14)(q21;q24)], as well as a missing chromosome #8 were found. We have reviewed the literature dealing with two or more changes affecting chromosome #14 and discussed the importance of the cytogenetic change at band 14q32 in malignant lymphoma. PMID- 3839434 TI - Macrophage-histiocytes in malignant lymphoma, small lymphocytic type (well differentiated lymphocytic lymphoma). AB - The authors studied the occurrence of Ricinus communis agglutinin (RCA)-binding macrophage-histiocytes in paraffin-embedded tumor tissue of 38 patients with malignant lymphoma, small lymphocytic type, a tumor of low-grade malignancy. Thirty-one patients (82%) had an indolent clinical course and were free of disease for a minimum follow-up period of 24 months. However, seven patients (18%) died within 24 months of biopsy, and six of the seven patients died of rapid progression of their tumor despite intensive treatment. Histologically, the tumors of these six short-term survivors were indistinguishable from those of the long-term survivors. RCA staining of paraffin-embedded tumor tissue of the 38 cases revealed three groups of tumors: (1) tumors with numerous (greater than 10/high-power field [HPF]) stromal macrophage-histiocytes (4 patients); (2) tumors with a moderate number (4-9/HPF) of macrophage-histiocytes (5 patients); (3) tumors with rare or no (0-3/HPF) macrophage-histiocytes, or only thin, anuclear variants (29 patients). Each of the six short-term survivors had readily demonstrable RCA-binding macrophage-histiocytes in their tumor; these were numerous in four and moderate in two. In contrast, macrophage-histiocytes were either rare or absent, or were anuclear variants, in 29 of the 31 patients who had an indolent clinical course. These observations suggest that in small lymphocytic type malignant lymphoma there is a subgroup characterized by an increased number of stromal macrophage-histiocytes and aggressive behavior of the tumor. Tumors of this subgroup can be detected by RCA staining. PMID- 3839436 TI - [Discrimination and artificial intelligence]. PMID- 3839437 TI - Ca2+-selective microelectrodes. AB - Ca2+-selective microelectrodes based on the synthetic neutral carrier ETH 1001 can be used for quantitative intracellular measurements of resting Ca2+ activities and of slowly changing Ca2+-levels (response time in the order of seconds). Microelectrodes with tip diameters greater than 0.3 micron show selectivities that yield a detection limit between 10(-8) and 10(-7) M Ca2+ in an intracellular background. The Ca2+-activity is obtained together with electrical parameters of the cell (e.g. cell membrane potential and membrane resistance or conductivity). Simultaneous monitoring of other ion-activities is accessible (double- or multi-barrelled microelectrodes). The Ca2+-determination is extremely local, i.e. it probably does not indicate an averaged cytosolic activity in every situation (e.g. localized transients). PMID- 3839438 TI - Modification of brain vascular eicosanoids after pharmacological treatment and ischemia in the rat: drugs and brain vascular eicosanoids. AB - Vascular eicosanoids (E) thromboxane (measured as T X B2) and prostacyclin (measured as 6-keto-PGF1 alpha) may modulate hemodynamic parameters in brain circulation. We have studied (a) the effects of the administration of vasoactive drugs, in the rat, on T X B2 and 6-keto-PGF1 alpha levels and release in brain cortex, and (b) changes of brain vascular E levels during hypoxia and recovery, in the same animal species. Administration of vasoactive drugs (papaverine, dipyridamole, the carbochromene derivative AD6 and nifedipine) to rats resulted in differential effects on endogenous levels and post-decapitation release of both compounds. Reduction of the T X B2/6-keto-PGF1 alpha balance in brain cortex was obtained with papaverine and AD6, whereas nifedipine reduced 6-keto-PGF1 alpha more than T X B2. During hypoxia there was no significant modification of brain vascular E, but during recovery both compounds were decreased. Thus pharmacological treatments during recovery from hypoxia may normalize brain vascular E levels. PMID- 3839439 TI - Altered synthesis of glucosamine-labeled glycopeptides during postimplantation embryogenesis of the mouse. AB - Dissected mouse embryos were examined for the ability to synthesize [3H]glucosamine-labeled embryoglycan, which is the glycoprotein-bound large carbohydrate eluted near the excluded volume of a Sephadex G-50 column. Although the ratio of glucosamine-label incorporated into embryoglycan decreased progressively during embryogenesis, 11- and 12-day-old embryos still synthesized significant amounts of the glycan. Severe inhibition of the glycan synthesis was noticed after the 15th day. Therefore, synthesis of the core portion of embryoglycan was suppressed later than when fucosylation of the glycan was known to be suppressed. PMID- 3839440 TI - Interactions of pyrethroids with phosphatidylcholine bilayers: comparisons in liposomal systems exhibiting large or small radii of curvature. AB - Pyrethroid interactions with dipalmitoyl phosphatidylcholine (DPPC) vesicles have been characterized in bilayers having large and small radii of curvature. The abilities of pyrethroids to alter the gel-fluid phase transition profiles were determined by steady state fluorescence anisotropy and phase-modulation lifetime techniques using the fluorescent probes cis- and trans-parinaric acid. Using the geometric isomers of parinaric acid as membrane probes, pyrethroids were found to lower the phase transition temperature (Tc) of DPPC large multilamellar vesicles with the same order of comparative effectiveness as previously reported using the fluorescent probe 1,6-diphenyl-1,3,5-hexatriene (DPH). Permethrin had a greater depressive effect upon the Tc of DPPC in the small unilamellar vesicle (SUV) system than in the large multilamellar system. Conversely, allethrin was less effective in reducing the Tc of DPPC SUVs. The enhanced effect of permethrin in decreasing the Tc of DPPC SUVs was greatest in regions of more rigid lipid packing, as determined by trans-parinaric acid fluorescence parameters. The results indicate that changes in lipid packing configuration caused by differing bilayer radii of curvature may alter the interactive characteristics of pyrethroids with lipid membranes. PMID- 3839441 TI - Synthesis of 1 alpha,25-dihydroxy-26,27-dimethylvitamin D3, a highly active analogue of 1 alpha,25-dihydroxyvitamin D3. PMID- 3839442 TI - Dipalmitoylphosphatidylcholine-palmitic acid phase diagram studied by 13C nuclear magnetic resonance. AB - The phase diagram of dipalmitoylphosphatidylcholine (DPPC) and palmitic acid mixtures in excess D2O was studied by 13C-NMR. Phase boundaries were determined from plots of apparent spin-spin relaxation time T2 (for both choline methyl and fatty acid chain carbons) versus temperature. A peritectic transition in the 1-10 mol% region, whose existence has been theoretically inferred from the Gibbs phase rule but which was undetectable by differential thermal analysis (DTA) (S.E. Schullery et al. Biochemistry, 20 (1981) 6818-6824), was located by NMR at 41.6 degrees C. A second, nearby peritectic line at 44 degrees C, which had been shown by DTA to extend from about 3-25 mol% palmitic acid, was seen by NMR only above 10 mol%. The palmitic acid/DPPC complex (2:1), with a sharp melting point at 64 degrees C, reported in earlier studies, was also seen by NMR. A phase diagram including both NMR and DTA results is presented. Important general conclusions from this study are: (i) NMR and scanning thermal analysis are complementary techniques for phase studies; each can see transitions that are invisible to the other. (ii) The case for the applicability of the Gibbs phase rule to lipid bilayer systems has been strengthened by the observance of two predicted, close spaced boundaries. (iii) Low concentrations of fatty acids and related molecules can not be assumed to disperse as simple ideal solutes in the bilayer matrix. PMID- 3839443 TI - Cisplatin, adriamycin and cyclophosphamide (PACe) combination chemotherapy in patients with ovarian carcinoma resistant to chlorambucil. AB - Twenty patients with stage III or IV ovarian carcinoma refractory to chlorambucil were treated with IV cisplatin, adriamycin and cyclophosphamide. Two patients achieved CR and four PR, giving an overall response rate of 30%. All patients have since died at 0-18 (median 8) months. Use of this region was associated with marked toxicity, including three drug-related deaths. Second-time drug combinations should be regarded as experimental, and they should probably only be used in selected patients outside of clinical trials. PMID- 3839444 TI - Clinical, chromosomal and enzymatic studies in four cases of rearrangements of chromosome 7. AB - We report here four cases of unbalanced chromosomal rearrangements involving partial monosomies and trisomies of chromosome 7. The quantitative expression of diaphorase 2 (DIA-2), beta-glucuronidase (GUS-beta) and argino-succinate-lyase (ASL) were measured in these patients and compared with controls. The results suggest that the DIA-2 locus is in the band 7p221----q21, the GUS-beta locus in the band 7p22----q21 and the ASL locus in the band 7p221----q22. PMID- 3839445 TI - Adolescent homosexuality. Issues for pediatricians. AB - Homosexuality is among the most complex and controversial issues of adolescent health care. Although homosexual activity is common during adolescence, the prevalence and origins of homosexuality per se are poorly understood. Homosexual identity formation is a potentially tumultuous process that begins in childhood and extends through adulthood. The adolescent's experiences may ultimately contribute to a variety of physical and mental health problems. The sociological, psychological, and medical issues are considered, and guidelines for the care of homosexual youths are proposed. PMID- 3839446 TI - Oral ciramadol in the treatment of postoperative pain. AB - The efficacy and safety of single oral 15, 30, and 60 mg doses of ciramadol, an investigational agonist/antagonist analgesic, were studied in a postoperative pain model and compared with aspirin, 325 and 650 mg. Two visual analog pain assessment scales were also compared. Results showed that a pain relief score of moderate or better was reported at some time during the 6-hour observation period by 76% of the patients who took 15 mg ciramadol, by 60% of those who took 30 mg ciramadol, by 59% of those who took 60 mg ciramadol, and by 38% and 92% of the patients who took the low and high doses of aspirin, respectively. From 1 to 4 hours after drug dosing, 15 mg ciramadol generally produced higher scores, indicative of greater pain relief, on the three pain intensity efficacy scales used (verbal, linear analog, and curvilinear analog) than did the other two ciramadol doses, but these differences were generally not significant. The differences between 15 mg ciramadol and 650 mg aspirin were generally not significant, although the higher aspirin dose had some advantages over 15 mg ciramadol. The most frequently reported adverse effect was dizziness/vertigo in 22% of patients taking 60 mg ciramadol, in 17% of those taking 30 mg ciramadol, in 13% of those taking 15 mg ciramadol, in 4% of those taking high aspirin doses, and in none of those who received the low aspirin doses. The correlation coefficient for the linear and curvilinear pain analog intensity scales was 0.955, indicating a highly significant correlation (P less than 0.001). PMID- 3839447 TI - FILEMAN41C--an interactive data management system for biomedical data selected from a free definable file by a pocket calculator. AB - An interactive system for the storage, retrieval and analysis of numerous clinical data is described. Due to the simple structure of the dialogue, no special knowledge of computer handling is required by the experimenter. The program is written for the Hewlett-Packard HP-41C pocket calculator and is suitable for a number of moderately sized experiments. PMID- 3839448 TI - Pocket calculator program of one-way analysis of variance. AB - This program has been written for the TI-59 pocket calculator. It uses Bartlett's test to supervise the homoscedasticity, then performs the one-way analysis of variance and multiple comparisons, namely Scheffe's test, Dunnett's test, Turkey's test and Newmann-Keuls's test. PMID- 3839449 TI - Combination therapy with ranitidine and pirenzepine for control of intragastric pH in the critically ill. AB - In a prospective study of pH control for stress ulcer prophylaxis, intermittent iv infusion of the anticholinergic drug pirenzepine maintained the intragastric pH above 4 in only one of 17 ICU patients, while similar administration of the H2 receptor antagonist ranitidine was successful in seven of 32 patients. This difference was not statistically significant. Of 15 patients in whom a maximum dose of 600 mg/day of ranitidine or 90 mg/day of pirenzepine failed to maintain pH, combination therapy was successful in 11, a significant (p less than .01) improvement. We conclude that neither ranitidine nor pirenzepine provides adequate control of pH for stress ulcer prophylaxis when used alone. If used together they are the most effective combination so far described for parenteral control of gastric pH in the critically ill. Regular monitoring of gastric pH is nevertheless essential to allow detection of therapeutic failures. PMID- 3839450 TI - Food allergy. PMID- 3839451 TI - Aplasia cutis congenita associated with valvular heart disease. AB - We present a patient with a congenital scalp lesion compatible with aplasia cutis congenita (ACC) and associated congenital heart disease (CHD). This interesting combined entity is briefly reviewed and associated defects that can occur are discussed. PMID- 3839452 TI - [Block of NK cell activity by ICO-11 monoclonal antibodies]. AB - Antigen expression determined by ICO-11 monoclonal antibodies was studied on leukemia cells from bone marrow, blood cells from patients with lymphoproliferative diseases and natural killer (NK) cells responsible for natural resistance. ICO-11 monoclonal antibodies were shown to recognize the antigen expressed on NK-cells, predecessors of T-cells (thymocytes), myelomonocytes (myeloblasts, monoblasts) and to block NK-cell activity. PMID- 3839453 TI - Specific regulation of vasoactive intestinal polypeptide biosynthesis by phorbol ester in bovine chromaffin cells. AB - Two neuropeptides, enkephalin and vasoactive intestinal polypeptide (VIP), are simultaneously increased in cultures of bovine chromaffin cells after diverse treatments including elevation of cAMP, application of nicotine, or chronic depolarization. We now show that phorbol esters can specifically elevate VIP in cultured chromaffin cells without changing the amount of enkephalin. Peptide histidine isoleucine, a VIP-related peptide, is also expressed concomitantly with VIP after treatment with phorbol ester. Immunocytochemical examination of drug treated cells defines a subpopulation of chromaffin cells which are responsive to phorbol ester stimulation. The unique ability of phorbol esters to selectively regulate VIP expression indicates the presence of independent mechanisms for controlling the expression of individual neuropeptides in chromaffin cells. PMID- 3839454 TI - Softening of lipid bilayers. AB - The softening of wet lipid bilayer membranes during their gel-to-fluid first order phase transition is studied by computer simulation of a family of two dimensional microscopic interaction models. The models include a variable number, q, of lipid chain conformational states, where 2 less than or equal to q less than or equal to 10. Results are presented as functions of q and temperature for a number of bulk properties, such as internal energy, specific heat, and lateral compressibility. A quantitative account is given of the statistics of the lipid clusters which are found to form in the neighborhood of the transition. The occurrence of these clusters is related to the softening and the strong thermal density fluctuations which dominate the specific heat and the lateral compressibility for the high-q models. The cluster distributions and the fluctuations behave in a manner reminiscent of critical phenomena and percolation. The findings of long-lived metastable states and extremely slow relaxational behavior in the transition region are shown to be caused by the presence of intermediate lipid chain conformational states which kinetically stabilize the cluster distribution and the effective phase coexistence. This has as its macroscopic consequence that the first-order transition appears as a "continuous" transition, as invariably observed in all experiments on uncharged lecithin bilayer membranes. The results also suggest an explanation of the non horizontal isotherms of lipid monolayers. Possible implications of lipid bilayer softening and enhanced passive permeability for the functioning of biological membranes are discussed. PMID- 3839455 TI - Fluorescence decay of pyrene in small and large unilamellar L, alpha dipalmitoylphosphatidylcholine vesicles above and below the phase transition temperature. AB - The fluorescence decays of pyrene in small and large unilamellar L, alpha dipalmitoylphosphatidylcholine vesicles have been investigated as a function of probe concentration and temperature. When the molar ratio of pyrene to phospholipid equals 1:3000, no excimer emission is observed and the fluorescence decays are mono-exponential. When this ratio is equal to or higher than 1:120, excimer formation is observed. Above the phase transition temperature the observed fluorescence decays of monomer and excimer can be adequately described by a bi-exponential function. The monomer decays can be equally well fitted to a decay law which takes into account a time-dependence in the probe diffusion rate constant. The fluorescence decay kinetics are compatible with the excimer formation scheme which is valid in an isotropic medium. The excimer lifetime and the (apparent) rate constant of excimer formation have been determined as a function of probe concentration at different temperatures above the phase transition temperature. The activation energy of excimer formation is found to be 29.4 +/- 1.3 kJ/mol. In small unilamellar vesicles the diffusion constant associated with the pyrene excimer formation process varies from 8.0 X 10(-7) cm2/s at 40 degrees C to 2.2 X 10(-6) cm2/s at 70 degrees C. Below the phase transition temperature the monomer decays can be described by a decay law which takes into account a time dependence of the rate constant of excimer formation. The lateral diffusion coefficient of pyrene calculated from the decay fitting parameters of the monomer region varies from 4.0 X 10(-9) cm2/s at 20 degrees C to 7.9 X 10(-8) cm2/s at 35 degrees C. No significant difference could be observed between the pyrene fluorescence decay kinetics in small and large unilamellar vesicles. PMID- 3839456 TI - Adenosine deaminase: characterization and expression of a gene with a remarkable promoter. AB - Cosmid clones containing the gene for human adenosine deaminase (ADA) were isolated. The gene is 32 kb long and split into 12 exons. The exact sizes and boundaries of the exon blocks including the transcription start sites were determined. The sequence upstream from this cap site lacks the TATA and CAAT boxes characteristic for eukaryotic promoters. Nevertheless, we have shown in a functional assay that a stretch of 135 bp immediately preceding the cap site has promoter activity. This 135-bp DNA fragment is extremely rich in G/C residues (82%). It contains three inverted repeats that allow the formation of cruciform structures, a 10-bp and a 16-bp direct repeat and five G/C-rich motifs (GGGCGGG) disposed in a strikingly symmetrical fashion. Some of these structural features were also found in the promoter region of other genes and we discuss their possible function. Knowledge of the exact positions of the intron-exon boundaries allowed us to propose models for abnormal RNA processing that occurs in previously investigated ADA-deficient cell lines. PMID- 3839457 TI - Trypanosoma brucei: a surface antigen mRNA is discontinuously transcribed from two distinct chromosomes. AB - The mRNAs for variant surface glycoproteins (VSGs) and many other proteins in Trypanosoma brucei start with the same sequence of 35 nucleotides, encoded by a separate mini-exon. There are approximately 200 mini-exon genes per trypanosome and these are highly clustered on large chromosomes. We have found two trypanosome variants that express a VSG gene located on a small, 225-kb chromosome. Each gene yields a mRNA containing the 35-nucleotide sequence even though the 225-kb chromosome does not contain a complete mini-exon gene. These results provide a strong support for the hypothesis that transcription of protein coding genes in trypanosomes is discontinuous. PMID- 3839459 TI - Comparative localization of putative pre- and postsynaptic markers of muscarinic cholinergic nerve terminals in rat brain. PMID- 3839458 TI - Complete nucleotide sequence of hepatic 5-aminolaevulinate synthase precursor. AB - Chick embryo liver mitochondrial matrix protein, 5-aminolaevulinate synthase, is synthesised initially as a larger cytosolic precursor. In this report we present the complete nucleotide sequence of a cDNA clone coding for the precursor together with corresponding confirmatory amino acid sequence of peptides derived from purified mature mitochondrial enzyme. The deduced amino acid sequence shows that the precursor consists of mature enzyme of 579 amino acids and an N-terminal extension of 56 amino acids. The latter presequence is highly basic in character as found with other mitochondrial preproteins. PMID- 3839460 TI - Aedes aegypti: model for blood finding strategy and prediction of parasite manipulation. AB - Aedes aegypti mosquitoes salivate during intradermal probing of vertebrate prey before ingesting blood (Griffiths and Gordon 1952). Nonsalivating mosquitoes locate blood more slowly; this difference was ascribed to an anti-platelet activity found in the mosquito's saliva (Ribeiro et al. 1984). Mosquitoes infected with Plasmodium gallinaceum suffer pathology that specifically impairs saliva anti-hemostatic activity but without reducing volume of output (Rossignol et al. 1984). The complexity of the feeding apparatus of mosquitoes provides opportunity for a variety of strategies in which pathogens may produce specific lesions that enhance their transmission, but the variables that affect the duration of probing by mosquitoes have not been defined. We sought to resolve this complexity by identifying and quantifying relevant parameters of probing behavior. Mosquitoes thrust their mouthparts repeatedly through their host's skin while searching for blood. Female A. aegypti thrust at 7-sec intervals. If this search results in success, feeding ensues. Alternatively, the mosquito "desists," the mouthparts stylets are withdrawn, and the mosquito attempts to feed at another site. Even after previous desistance, the probability of finding blood remains undiminished. Functions for the probability of feeding success and desistance over time were derived using data from observations on 300 mosquitoes. The probability of feeding success was interpreted as being a function of the density of vessels in the skin, their geometric distribution, and the conditions locally affecting hemostasis. During each probe, the probability of desisting increased linearly with time, and after desisting once, mosquitoes tended to desist more rapidly. A model was developed incorporating Monte Carlo simulation which closely fit observed data. By changing values for the several parameters of the probability functions, we predicted modes in which parasites may manipulate their hosts to enhance transmission, both to and from the vector. In particular, parasite strategies in the vector would include induced salivary pathology; increased duration of probing thrusts; decreased desistance time; and inhibited phagoreception. Predicted parasite strategies in the reservoir host would include increased skin vascular volume and impaired host hemostasis. Our model supports the hypothesis of a mutualistic interaction of malaria and mosquitoes. PMID- 3839461 TI - Resonance energy transfer evidence for two attached states of the actomyosin complex. AB - Resonance energy transfer measurements were made between a donor fluorophore, N (bromacetyl)-N'-(1-sulpho-5-naphthyl)ethylenediamine, located on the single cysteine of the Al light chain of myosin (S1(A1), and an acceptor fluorophore, 5 (iodoacetamido)fluorescein, sited on Cys-374 of actin. In the binary rigor complex a transfer efficiency of 24% was noted, representing a spatial separation of about 6 nm. When the same measurements were made using a stable analogue of S1 X ATP, in which the fast reacting SH1 thiol group is crosslinked to another thiol group in the 20 kDa domain of S1, the 2 fluorophores were found to have moved closer together by greater than or equal to 3 nm. This provides, for the first time, direct experimental evidence for a change in structure of the myosin crossbridge that could account for tension generation. PMID- 3839462 TI - Subclass-specific antibody-dependent binding of macrophages to supported planar lipid monolayer membranes. AB - Subclass-specific antibody-dependent binding of macrophages to supported planar lipid monolayers has been studied. The binding of the P388D1 macrophage-like cell line to planar DMPC or DPPC monolayers was dependent on IgC subclasses and hapten concentrations. The binding efficiencies were as follows on both 'solid' and 'fluid' lipid monolayer membranes; IgG1 = IgG2a greater than IgG2b greater than IgG3 = IgA. These results suggest that the present system is very useful for studying the mechanisms of the transmembrane signal triggered by Fc receptors of macrophages. PMID- 3839463 TI - Labelling and immunoprecipitation of thyroid microsomal antigen. AB - Human thyroid microsomes have been solubilized, labelled with 125I, immunoprecipitated with microsomal antibody and analysed by gel electrophoresis. The analysis indicated that two peptides of relative molecular masses 108 and 118 kDa, under reducing conditions, were specifically immunoprecipitated by microsomal antibody. Similar values were obtained under non-reducing conditions indicating that the two peptides were not linked by disulphide bridges to each other or to different peptides. These results suggest that the microsomal antigen contains two components which may be linked by non-covalent bonds to form a single protein of 230 kDa. Studies with lectin affinity columns suggested that the antigen was glycosylated. PMID- 3839464 TI - Stable secondary structures at the 3'-end of the genome of yellow fever virus (17 D vaccine strain). AB - The sequence of the 3'-terminal 565 nucleotides of yellow fever virus has been determined from a cloned cDNA. Several structures are detectable: three tandemly repeated sequences, a series of inverted repeats and a stable secondary structure involving the 3'-terminal 120 nucleotides. PMID- 3839465 TI - [Anti-triiodothyronine antibodies in patients with rheumatoid arthritis associated with Hashimoto's thyroiditis]. AB - Anti-triiodothyronine antibody was found in a case of rheumatoid arthritis associated with Hashimoto's thyroiditis. The patient was a 40 year-old woman who had complained of polyarthralgia, joint-swelling and stiffness for seven years. She had a rheumatoid nodule and showed a positive RA test. Radiographic changes of hands and wrists showed osteoporosis, erosions and narrowing of joint space. Nonsteroidal anti-inflammatory drugs had been used for seven years. The diagnosis of Hashimoto's thyroiditis had been made by open biopsy of the thyroid gland seven years before. Serum T4, TSH, TBG, free T4, free T3 and r-T3 were all normal. On the other hand, serum T3 level was almost unmeasurable by radioimmunoassay. Binding of 125I-T3 to the patient's serum was studied by using polyethylene glycol (PEG) and column chromatography. By using the PEG method, the binding of 125I-T3 to the patient's serum was tenfold compared to control serum. Sephadex G-25 column chromatography (0.9 X 1.5 cm) of 125I-T3 with the patient's serum in the presence of 0.1% ANS showed an early radioactive peak, while control serum did not show an early peak. In the next experiments, the patient's serum was labelled with 125I-T3, mixed with human anti-IgG, IgM, IgA, lambda, kappa, incubated at 4 degrees C for 20 hours and centrifuged for 20 min. Strong binding to the anti-IgG and anti-lambda was detected. The presence of this abnormal T3 binding globulin in the patient's serum may have produced an undetectable T3 level. PMID- 3839466 TI - Lectin-binding to hemocytes of Mytilus edulis. AB - Lectin receptors for WGA, Ricinus 60, Ricinus 120, and for the agglutinin from the albumin gland of Helix pomatia were detected on the surface of Mytilus hemocytes by an agglutination assay. When hemocyte monolayers on slides were incubated with these lectins, strong rosette formation was obtained after addition of human erythrocytes. The lowest lectin concentration which caused formation of rosettes was determined to be 5 micrograms/ml of WGA or of Helix agglutinin, and 20 micrograms/ml of Ricinus 60 or 40 micrograms/ml of Ricinus 120, respectively. In contrast to these results, no binding of indicator cells to Mytilus hemocytes occurred with various other lectins, including Con A. PMID- 3839467 TI - External fistulisation of the canal of Schlemm and Nd-YAG laser trabeculotomy. PMID- 3839468 TI - Amino acid sequence of lymphocyte-surface antigens. PMID- 3839469 TI - CT scans of infants with glutaric aciduria. PMID- 3839470 TI - Design and function: a physical and electrical description of the 3M House cochlear implant system. AB - A patient-wearable, single-electrode cochlear implant was first used by a patient in 1972 at the House Ear Institute. Since early 1982, a redesigned version of this system has been in clinical use. This new system, called the 3M House cochlear implant system, consists of an implanted receiver and a patient-worn signal processor, transmitter, and microphone. Also available are instruments to assist the audiologist and patient in proper fitting and testing of the equipment. Physical and electrical characteristics of the devices are described, with attention given to improvements over the older system and features important to the use in children. PMID- 3839471 TI - Cochlear implants in children: medical and surgical considerations. AB - The surgical procedure for placement of a single-electrode cochlear implant in children is described in detail. This is essentially the same procedure that has been successfully used in adults. Medical, radiological, and surgical data are also presented. The majority of the children were deafened by meningitis. Preoperative X-rays indicated ossification of scala tympani was present in 34% of the cases and ossification of the round window in more than 50%. Surgical and postoperative complications have been minimal. PMID- 3839472 TI - Otitis media in children following the cochlear implant. AB - Children are more prone to otitis media than adults. Therefore, although otitis media has not produced any complications in adult cochlear implant patients, concern has been expressed that it might do so in children with an implant. This study examined the frequency and severity of otitis media following cochlear implantation. Data were collected from parents and physicians by use of a questionnaire. In addition, medical records were examined for incidence and severity of otitis media or any evidence of inner ear infection. All parents and all physicians who responded to the questionnaire rated both the frequency and severity of otitis media as the same or decreased after implantation when compared to preimplant. Medical records show no evidence that incidence of otitis media is affected by the implant. PMID- 3839473 TI - Audiological results in children with a cochlear implant. AB - Audiological data collected through June 1984 were analyzed for 126 children with the cochlear implant. Preimplant hearing aid results were compared to cochlear implant results at 6-month follow-up test intervals. Auditory thresholds to warble tones and speech stimuli, and auditory discrimination test scores were significantly better with the cochlear implant at all test intervals than preoperatively with a hearing aid. Electrical measurements were also monitored. Mean thresholds remained consistent over time. Electrical comfort levels increased slightly over time, indicating a widening of the electrical dynamic range. Results have been extremely encouraging. Some trends are beginning to develop, but more long-term data are needed to define the potential benefit of the implant in children. PMID- 3839474 TI - Speech and language results in children with a cochlear implant. AB - At the House Ear Institute, speech and language assessments are a regular part of the evaluation protocol for the cochlear implant clinical trials in children. The assessments are conducted preimplant and at specific postimplant intervals. Paired comparisons of the children's performance at pre- and post-implant intervals reveal significant improvements in both imitative and spontaneous speech production abilities. However, some differences between groups are noted. Children implanted at an early age demonstrate a greater number of significant improvements in speech production, while children using oral communication have better skills at all test intervals. In addition, significant improvements on three of the four receptive language measures and one of the four expressive language measures are demonstrated at the 6-mo postimplant test interval. A significant decrease in performance is noted for one receptive language measure. In a second study, the speech scores of control groups and postimplant groups of the same age (3, 4, or 5 yr) are compared. Implanted children score higher in all but one of 24 contrasts, and these differences are statistically significant in five of the comparisons. PMID- 3839476 TI - Monitoring and evaluating the educational effects of the cochlear implant. AB - For more than 2 years, the House Ear Institute has monitored the educational progress of children who have received the cochlear implant at the Institute. A program has been developed to ensure that the Institute receives information from and provides information to each child's school. Additionally, the Institute is involved in a number of projects designed to assist children in their educational setting. This paper describes the Institute's program for maintaining contacts with the schools. It presents results from a Teacher Evaluation Form on how implant children are responding to sound in the classroom. Educational changes exhibited by 14 children are examined. Two projects, the Cochlear Implant/Auditory Trainer Project and the Educational Outreach Program are described. Finally, discussion of the future educational prospects of implant children is presented. PMID- 3839475 TI - A psychological evaluation of cochlear implants in children. AB - Psychological evaluation is performed both pre- and postimplant as part of the children's cochlear implant program. The purposes are to select appropriate candidates and to study changes over time that may result from the implant. The children in this sample were of above average intelligence as a group, but demonstrated perceptual motor lags and academic underachievement consistent with previous findings for deaf children. Six-month postimplant results show significant improvements in perceptual motor skills, cognitive performance, and academic achievement. Some of these improvements may be the result of a reduction in distractibility and short attention span that was noted for a number of children after implantation. A hypothesis is presented that may explain how the cochlear implant affects this behavior. PMID- 3839477 TI - Methods and issues in the cochlear implantation of children: an overview. AB - The single-electrode cochlear implant is undergoing clinical trials in children under Federal Food and Drug Administration regulations governing medical devices. Seven teams from around the United States are participating in this investigation as coinvestigators with the House Ear Institute. The clinical research program involves evaluation and selection for an implant surgery, basic guidance for fitting the device, and follow-up monitoring on a regular basis. As of December 31, 1984, 164 profoundly deaf children have received the cochlear implant. They ranged in age at time of surgery from 2 yr, 5 mo to 17 yr, 11 mo. The majority of children were deafened from bacterial meningitis (N = 98). The pertinent issues involved in the implantation of children include methods of investigation, impact of deafness, potential risks and benefits, and alternatives. While the use of the implant in children continues to be controversial, the evidence to date indicates that this prosthesis can provide significant benefit for a select population of profoundly deaf children. PMID- 3839478 TI - Perceptual capabilities with the cochlear implant: implications for aural rehabilitation. AB - While the cochlear implant provides only limited auditory information, profoundly deaf children continue to show significant gains in hearing performance and speech production abilities. The evidence has indicated that children receiving consistent auditory training demonstrate more progress with the implant than those children in less auditory-type environments. As a result, the House Ear Institute is developing extended training protocols to help optimize implant performance. A three-component framework is detailed to include: (1) the production/perception model, (2) a comprehension/bottom-up approach, and (3) strategical methods of delivery (multisensory versus unisensory). The purpose of such development is to integrate "hearing" into home, classroom, and individualized therapy settings to better facilitate growth in listening skills and speech development within a psycholinguistic context. PMID- 3839479 TI - Effect of peptide YY on gastric, pancreatic, and biliary function in humans. AB - The effect of peptide YY (PYY) on gastric and pancreatico-biliary secretion was studied in humans. Peptide YY was infused into groups of 6 healthy volunteers at doses of 0.59, 0.20, and 0.064 pmol X kg-1 X min-1. The two higher doses caused a significant suppression of gastric acid and pepsin output during background stimulation with pentagastrin. The middle dose of PYY (0.20 pmol X kg-1 X min-1) that increased plasma PYY levels by 27 +/- 2 pM caused a 90% +/- 18% (mean +/- SEM; p less than 0.001) reduction in the incremental gastric volume response to pentagastrin. Similarly this dose of PYY caused a substantial inhibition of the acid (77% +/- 14%; p less than 0.005) and pepsin (96% +/- 22%; p less than 0.01) response to pentagastrin; in 2 subjects, pepsin output fell to below basal levels. In contrast, the highest dose of PYY (0.62 pmol X kg-1 X min-1) had no significant influence on duodenal juice volume, output of bicarbonate, trypsin, or bilirubin during low dose stimulation with secretin (0.25 pmol X kg-1 X min-1) and cholecystokinin-8 (0.15 pmol X kg-1 X min-1). Thus PYY concentrations in the circulation similar to those seen after the ingestion of food cause a marked reduction in gastric secretion. This peptide should therefore be considered as one of the possible candidates for the classical enterogastrone. PMID- 3839480 TI - Molecular forms of peptide histidine isoleucine-like immunoreactivity in the gastrointestinal tract. Nonequimolar levels of peptide histidine isoleucine and vasoactive intestinal peptide in the stomach explained by the presence of a big peptide histidine isoleucine-like molecule. AB - Regional specific antibodies and chromatography were used to analyze the distributions and molecular forms of peptide histidine isoleucine (PHI) and vasoactive intestinal peptide (VIP) in the porcine intestine. Both peptides were present along the entire length of the intestine, the highest concentrations occurring in the colon. Concentrations of PHI immunoreactivity, measured with three different antisera, and VIP immunoreactivity were approximately equal in all parts of the gastrointestinal tract except in the stomach. In the stomach, the concentration of PHI immunoreactivity, measured with the N-terminally directed antibody R8403, although equal to the corresponding VIP concentration, was two to four times higher than the PHI immunoreactivity detected with the two C-terminally directed PHI antisera T33 and T41. Chromatographic analysis on Sephadex G-50 superfine of gastric extracts revealed only one VIP immunoreactive peak that eluted in the same position as the porcine VIP standard, at Kav 0.53. A PHI immunoreactive peak was also detected with the C-terminally directed PHI antisera in the same position as porcine PHI standard. However, with the N terminally directed PHI antiserum R8403, an additional PHI immunoreactive peak was detected in gastric extracts constituting the predominant form present, and this peak eluted earlier at Kav 0.37. The PHI immunoreactive material that eluted earlier was present in the rest of the intestine in only small amounts. As VIP and PHI are believed to be derived from a common precursor, it is suggested that in the stomach the posttranslational enzymic processing of the precursor is different from that in the other parts of the intestine. PMID- 3839481 TI - Production and characterization of N-terminally and C-terminally directed monoclonal antibodies against pancreatic glucagon. AB - Hybridoma technology has been successfully applied to the production of monoclonal antibodies against a variety of small soluble peptides. We report herein for the first time on the development of monoclonal antibodies to pancreatic glucagon. Twenty-three stable positive hybridomas were detected by radioimmunoassay from five separate fusions and cloned by the limiting dilution method. Four selected monoclonal antibodies were all of the IgG 2a subclass type kappa and bound to protein A. One monoclonal antibody (23.8B6) was shown to be directed toward the C-terminal region and another (23.6B4) toward the N-terminal to central region of the glucagon molecule. These antibodies did not cross-react with any of the other peptides tested. Two further monoclonal antibodies (23.4A1, 22.3A6) reacted with the C-terminal third of the glucagon molecule and showed a cross-reaction with the structurally related gastric inhibitory polypeptide of 0.7% and 9.1%, respectively. All but the C-terminal monoclonal antibody 23.8B6 showed a marked cross-reaction with ileal extracts. The N-terminally directed monoclonal antibody 23.6B4 was of sufficient avidity for use in the radioimmunoassay of pancreatic glucagon and gut glucagon-like immunoreactivity in tissue extracts, being sensitive to changes of pancreatic glucagon of 2.0 fmol/tube at a final titer of culture supernatant of 1:1.4 X 10(5). In gel permeation chromatography of intestinal extracts, two major peaks were detectable (Kav 0.27 and 0.54). The present findings show that monoclonal antibodies provide sensitive tools for detecting pancreatic glucagon and gut glucagon-like immunoreactivity. They will be valuable immunoreactants for the development of immunoradiometric assays as well as for large-scale immunoaffinity purification of gut glucagon-like immunoreactivity. PMID- 3839482 TI - Aluminum intake from non-prescription drugs and sucralfate. AB - The use of non-prescription antacids to control hyperphosphatemia has been implicated as a primary cause of aluminum intoxications in patients with reduced renal function. Additional reports suggest that oral aluminum intake may have adverse effects on mineral metabolism of patients with normal renal function. The non-prescription drugs that contain substantial quantities of aluminum salts include some antacids, buffered aspirins, antidiarrheals, and vaginal douches. Sucralfate, an anti-ulcer drug available by prescription, is the aluminum salt of sucrose sulfate. If taken as directed, the daily aluminum intake from the antacids can be as much as 5,000 mg. When aluminum buffered aspirins are used as part of the drug therapy for rheumatoid arthritis, aluminum intake can be elevated by 700 mg/day. Although aluminum intoxications have been reported among patients with reduced renal function, existing reports are not sufficient to estimate whether the chronic elevation of aluminum intake from drugs is causing adverse health effects among other patient populations. PMID- 3839483 TI - [Toxicity and hazards of the inhibitor DPF-1 (2-hydroxy-1,3-pro- pylene diamine N,N,N',N'-tetramethylene phosphonic acid)]. PMID- 3839484 TI - A combination of pirenzepine and cimetidine: a new approach to treatment of duodenal ulcer in "non-responders". AB - Treatment of peptic ulcer in "non-responders" with the combination of pirenzepine and cimetidine was evaluated in a longterm study. Patients who did not respond to two months of treatment, first with cimetidine (1 g/day), and then pirenzepine (150 mg/day), were given one of these two compounds alone for 6 months or a combination at lower doses for 24 months. The combination of pirenzepine (75 mg/day) and cimetidine (400 mg/day) was successful in a high percentage of cases, and showed fewer side effects than in the single treatment groups. The effectiveness of the combination treatment might be due to its more significant anti-secretory effects. PMID- 3839485 TI - Cholinergic-muscarinic receptors participate in growth hormone secretion induced by lysine-8-vasopressin in man. PMID- 3839486 TI - Assignment of human pepsinogen A locus to the q12-pter region of chromosome 11. AB - A 0.9kb cDNA fragment, corresponding to a large part of Rhesus monkey pepsinogen A mRNA, was used as probe for the chromosomal localization of the human pepsinogen A gene(s) using human-rodent somatic cell hybrids. Southern blot analysis of 14 human-Chinese hamster and three human-mouse cell hybrids, strongly indicates that the human PGA locus is on chromosome 11. The human-mouse hybrids, containing a translocation involving chromosome 11, allow sublocalization to the region q12-pter. PMID- 3839487 TI - Analysis of questionnaires completed by some participants at the 2nd international conjoint meeting held in June 1984 in Montreal. PMID- 3839488 TI - Automatic decomposition of the clinical electromyogram. PMID- 3839489 TI - The new international classification of retinopathy of prematurity. PMID- 3839490 TI - An international classification of retinopathy of prematurity. AB - The unifying principle underlying this classification system is: The more posterior the disease and the greater the amount of involved retinal vascular tissue, the more serious the disease. The staging of the disease at any given location expresses the natural history and evolution of events at the border between vascularized and avascular retina. The classification system is designed to permit the examiner full latitude in transcribing his observations so that they will be immediately intelligible to another examiner who may not have had the opportunity to examine the specific infant. PMID- 3839491 TI - Computerized axial tomography in the diagnosis of lumbar disc hernia. AB - Computerized axial tomography (C.A.T.) is a very useful method of investigation in the diagnosis of lumbar disc hernia. There is a high correlation with the operative findings and a very low incidence of false positives and negatives. The fact that it is a non invasive method extends its applicability to the evaluation and control of treatment, whether conservative, chemonucleolysis, or surgical, particularly in the present day medico-legal aspects of this syndrome. PMID- 3839492 TI - Thromboxane synthetase inhibition: potential therapy in migraine. PMID- 3839493 TI - Distribution and endocrine morphology of polypeptide YY (PYY) containing cells in the human gut. PMID- 3839494 TI - Tailoring of the diet for the individual in maple syrup urine disease: long-term home dietary treatment of an adult patient with MSUD by monitoring of daily intake with a personal computer. A case report. AB - The clinical appearance of maple syrup urine disease (MSUD) is due to reduced activity of the enzyme branched-chain alpha keto acid decarboxylase (alpha-BCKA decarboxylase), thereby affecting the metabolism of the branched-chain amino acids (BCAA), leucine (Leu), isoleucine (Ile) and valine (Val). The aim of the therapeutic regime in MSUD is to keep the concentration of toxic metabolites within individual tolerance limits. The case of a 46-year-old female patient is reported. Energy expenditure was calculated by recording activities and indirect calorimetry. Nitrogen requirement and tolerance level of BCAA were estimated during parenteral nutrition with stepwise increasing supply of amino acids. A diet was designed within these limits, and a computer program was made to assist the patient in keeping her diet within the estimated limits. PMID- 3839495 TI - Deficiency of the contact phase of intrinsic coagulation in a horse. AB - A 16-year-old gelding was examined because of weight loss, inappetence, and intermittent fever of 2 months' duration. Preliminary laboratory findings revealed anemia, hypoproteinemia, thrombocytopenia, and prolongation of the activated partial thromboplastin time. A deficiency or inhibition of coagulation factor XI, factor XII, or high molecular weight kininogen was diagnosed. This defect was not associated with a bleeding diathesis, but should be considered as a cause of prolongation of the activated partial thromboplastin time. PMID- 3839496 TI - Guanine-7-oxide, a novel antitumor antibiotic. AB - A new antibiotic, PD 113,876, was isolated from the culture broth of a Streptomyces sp. and was shown by X-ray diffraction analysis to be the N-7 oxide of guanine. This novel antimetabolite is very active in vivo against L1210 lymphocytic leukemia. PMID- 3839497 TI - Penitricin, a new class of antibiotic produced by Penicillium aculeatum. IV. Biosynthesis. AB - Bioconversion experiments using washed mycelia of Penicillium aculeatum NR 5165 and NR 6216 revealed that penitricin (Ro 09-0804, hydroxymethylcyclopropenone) was biosynthesized from trans-2-butene-1,4-diol via 4-hydroxycrotonaldehyde. PMID- 3839498 TI - A new antifungal antibiotic, phosphazomycin A. PMID- 3839499 TI - Structure of a new antibiotic curromycin A produced by a genetically modified strain of Streptomyces hygroscopicus, a polyether antibiotic producing organism. PMID- 3839500 TI - Structure of a new macrolide antibiotic, X-14952B. PMID- 3839501 TI - Lavendomycin, a new antibiotic. I. Taxonomy, isolation and characterization. AB - Lavendomycin, a new basic peptide antibiotic containing novel amino acids, has been isolated from the culture broth of a streptomyces designated as Streptomyces lavendulae subsp. brasilicus. The antibiotic obtained as colorless crystals (C29H50N10O8, MW 666) is active against Gram-positive bacteria in vitro and in vivo, however, inactive against Gram-negative bacteria and fungi. An acute toxicity of the antibiotic in mice was LD50 greater than 2 g/kg by subcutaneous injection. PMID- 3839502 TI - Two new inhibitors of phospholipase A2 produced by Penicillium chermesinum. Taxonomy, fermentation, isolation, structure determination and biological properties. AB - Plastatin and the known fungal metabolite, luteosporin, have been isolated from fermentations of Penicillium chermesinum as inhibitors of porcine pancreatic phospholipase A2 (PLA2). Structure 1 for plastatin was deduced from its spectroscopic properties. Plastatin and luteosporin inhibited pancreatic PLA2 competitively with Ki values of 0.89 microM and 12.8 microM, respectively. PLA2 preparations from Naja naja and Crotalus adamanteus were not significantly inhibited by plastatin and luteosporin. PMID- 3839503 TI - Laboratory evaluation of a new long-acting 3-azinomethylrifamycin FCE 22250. AB - FCE 22250 (3-(N-piperidinomethylazino)methylrifamycin SV) is a member of the new class of 3-azinomethylrifamycins characterized by a long persistance in animals, a good oral absorption and a broad antibacterial spectrum including mycobacteria. In the experimental mice infection sustained by Mycobacterium tuberculosis H37Rv, FCE 22250 shows an efficacy 14 times higher than rifampicin and is still therapeutic when administered once every three weeks. PMID- 3839504 TI - Methods of analysis for infant formula: Food and Drug Administration and Infant Formula Council Collaborative Study. AB - Because the U.S. Infant Formula Act of 1980 requires manufacturers to produce formula containing a specific minimum amount of nutrients, it became necessary to establish analytical methods for the nutrients listed in the Act. The Food and Drug Administration, the Infant Formula Council, its member companies, contract laboratories, and other government laboratories undertook a collaborative study of available methods; the specific nutrients studied to date include vitamins A, B6, C, riboflavin, and niacin, and the elements calcium, magnesium, iron, zinc, copper, manganese, sodium, and potassium. The coefficients of variation in most cases have been as good as those that could be predicted from other collaborative studies. The methods studied for these nutrients have been adopted official first action except the method for vitamin A. PMID- 3839505 TI - Purification and NH2-terminal amino acid sequence of human thymidylate synthase in an overproducing transformant of mouse FM3A cells. AB - Human thymidylate synthase [EC 2.1.1.45] was purified to homogeneity and its NH2 terminal amino acid sequence was determined taking advantage of the following facts: i) The source of the enzyme was a transformant of mouse FM3A mutant cells which lacks mouse thymidylate synthase but overproduces human thymidylate synthase. ii) The enzyme could be purified on two kinds of affinity column, Cibacron blue dye-bound agarose and methotrexate-bound Sepharose. iii) The enzyme could finally be separated from a trace of impurities by electrophoresis on polyacrylamide gel containing sodium dodecyl sulfate. The purified human thymidylate synthase had a subunit with a molecular weight of 33,000, as determined by sodium dodecyl sulfate polyacrylamide gel electrophoresis. The enzyme was subjected to Edman degradation and the NH2-terminal 24 amino acids were sequenced by successive use of a high-sensitivity gas-phase protein sequencer and high performance liquid chromatography to be as follows: Pro-Val Ala-Gly-Ser-Glu-Leu-Pro-Arg-Arg-Pro-Leu-Pro-Pro-Ala-Ala-Gln-Glu- Arg-Asp -Ala-Glu Pro-Arg-. PMID- 3839506 TI - The reaction of arsenite-complexed xanthine oxidase with oxygen. Evidence for an oxygen-reactive molybdenum center. AB - The effects of arsenite on the reaction of reduced xanthine oxidase with oxygen are determined. The kinetics of the reaction monitoring the return of enzyme absorbance are investigated as are the kinetics and stoichiometries of peroxide and superoxide formation. Although some of the effects of arsenite are qualitatively consistent with expectations based on the known perturbation of the molybdenum midpoint potentials by arsenite, several results cannot be so easily explained. Specifically, arsenite introduces a very rapid phase (kobs = 110 s-1 at 125 microM oxygen) to the oxidative half-reaction which is not observed with the native enzyme. Arsenite also diminishes the amount of superoxide produced and eliminates one-electron reduced enzyme as a detectable kinetic intermediate in the reoxidation pathway. These differences appear to result from the ability of arsenite to greatly enhance the oxygen- and/or superoxide-reactivity of the reduced molybdenum center. This is reflected in the observation that reduced forms of arsenite-complexed xanthine oxidase lacking functional FAD (iodoacetamide-alkylated enzyme and deflavo enzyme) react relatively rapidly with oxygen whereas these reactions are quite slow in the absence of arsenite. PMID- 3839507 TI - The complete sequence of the chicken delta 1 crystallin gene and its 5' flanking region. AB - delta-Crystallin is the principal structural protein of the embryonic chicken lens. In the chicken, there are two linked delta-crystallin genes arranged in the same transcriptional polarity (5'-delta 1-delta 2-3'). Here we have sequenced the delta 1 crystallin gene and almost 4.3 kilobases of its 5' flanking region. The delta 1 gene is 7766 base pairs in length and has 17 exons. At least one lariat branch consensus sequence has been identified in each intron. Analysis of the deduced delta-crystallin protein using a program which accounts for conservative amino acid changes shows regions of similarity within the delta 1 amino acid sequence. These suggest a rough 2-fold repeat in the protein structure. PMID- 3839508 TI - Relationships between membrane lipid composition and biological properties of rat myocytes. Effects of aging and manipulation of lipid composition. AB - Cultures of newborn rat heart myocytes undergo major age-related alterations as demonstrated by comparing 5-6-day-old cells ("young cells") and 14-15-day-old cells ("old cells"). This includes: changes from spherical to elongated shape; sphingomyelin and cholesterol level/cell increase by 100% and 50%, respectively, while the phosphatidylcholine is reduced by 15-20% with almost no change in content of total phospholipids. There is a 50% increase in total protein content/cell while DNA content remain constant. The specific activity of seven marker enzymes representing most subcellular organelles is increased. Beating rate is reduced from 160 +/- 20 to 20 +/- 20 beats min-1. All the above age dependent alterations are affected by modification of cellular polar lipid composition. Small unilamellar vesicles of egg phosphatidylcholine added to the growth medium of old cells serve as donor of egg phosphatidylcholine to the cells and as acceptor of cellular sphingomyelin and cholesterol. Sphingomyelin phospholipid exchange can be separated from cholesterol depletion either by using vesicles of egg phosphatidylcholine/cholesterol mixtures which serve only in the phospholipid exchange process, or by small unilamellar vesicles of sphingomyelin which act only as efficient cholesterol acceptors. Such experiments indicated that the major response of old cells is to alteration in the phosphatidylcholine to sphingomyelin mole ratio, while changes in the cholesterol level induce smaller effects. Thus, reversal of phosphatidylcholine to sphingomyelin mole ratio to the values shown by young cells reverse cellular functions and features which were altered by cell aging to levels found in young cells. This includes: increase in the beating rate back to 160 +/- 20, reduction in the total protein level and in the specific activity per DNA content of seven marker enzymes and reappearance of spherical cell shape. These results suggest that membrane lipid composition has major influence on cellular properties which as described in the accompanying paper (Yechiel, E., Barenholz, Y., and Henis, Y. I. (1985) J. Biol. Chem. 260, 9132-9136), may be mediated through the organization and dynamics of the cell membranes. PMID- 3839509 TI - Isolation and characterization of the orotidine 5'-monophosphate decarboxylase domain of the multifunctional protein uridine 5'-monophosphate synthase. AB - The multifunctional protein uridine 5'-monophosphate (UMP) synthase catalyzes the final two reactions of the de novo biosynthesis of UMP in mammalian cells by the sequential action of orotate phosphoribosyltransferase (EC 2.4.2.10) and orotidine 5'-monophosphate (OMP) decarboxylase (EC 4.1.1.23). This protein is composed of one or two identical subunits; the monomer weighs of 51,500 daltons. UMP synthase from mouse Ehrlich ascites cells can exist as three distinct species as determined by sucrose density gradient centrifugation: a 3.6 S monomer, a 5.1 S dimer, and a 5.6 S conformationally altered dimer. Limited digestion of each of these three species with trypsin produced a 28,500-dalton peptide that was relatively resistant to further proteolysis. The peptide appears to be one of the two enzyme domains of UMP synthase for it retained only OMP decarboxylase activity. Similar results were obtained when UMP synthase was digested with elastase. OMP decarboxylase activity was less stable for the domain than for UMP synthase; the domain can rapidly lose activity upon storage or upon dilution. The size of the mammalian OMP decarboxylase domain is similar to that of yeast OMP decarboxylase. If the polypeptides which are cleaved from UMP synthase by trypsin are derived exclusively from either the amino or the carboxyl end of UMP synthase, then the size of a fragment possessing the orotate phosphoribosyltransferase domain could be as large as 23,000 daltons which is similar in size to the orotate phosphoribosyltransferase of yeast and of Escherichia coli. PMID- 3839510 TI - Phosphorylation of smooth muscle myosin at two distinct sites by myosin light chain kinase. AB - The 20,000-dalton light chain of turkey gizzard myosin is phosphorylated at two sites. Dual phosphorylation is observed when both intact myosin and isolated light chains are used as substrates. Phosphorylation of the second site is not observed at higher ionic strength (e.g. 0.35 M KCl). The first phosphorylation site (serine 19) is phosphorylated preferentially to the second site. The latter is phosphorylated more slowly than the first site, and its phosphorylation requires relatively high concentrations of myosin light chain kinase. It is suggested that myosin light chain kinase catalyzes the phosphorylation of both sites on the light chain, and several reasons are cited that make it unlikely that a contaminant kinase is involved. The second phosphorylation site is a threonine residue. Based on the results of limited proteolysis of the light chain, it is concluded that the threonine residue is close to serine 19, and possible locations are threonines 9, 10, and 18. At all concentrations of MgCl2, phosphorylation of the second site markedly increases the actin-activated ATPase activity of myosin and accelerates the superprecipitation response of myosin plus actin. PMID- 3839511 TI - Assay methods for 6-keto-prostaglandin F1 alpha in human urine. Comparison of chromatographic techniques with radioimmunoassay and gas chromatography-negative ion chemical-ionization mass spectrometry. AB - 6-Keto-prostaglandin F1 alpha (6-keto-PGF1 alpha) in human urine is considered to be a reflection of renal prostacyclin production. Because of the large amounts of unidentified eicosanoid metabolites in urine that may potentially bind to 6-keto PGF1 alpha antisera, most radioimmunoassays include chromatographic purification of urine. A comparison of chromatographic techniques and of antisera to 6-keto PGF1 alpha for the assay of human urine is described. Gas chromatography- negative-ion chemical-ionization mass spectrometry (GC--NICI-MS) was used as the reference method. Radioimmunoassays were performed with each of four antisera combined with each of three chromatographic purification systems (silicic acid, Sephadex LH-20, reversed-phase high-performance liquid chromatography). There was marked variability in the results; however, there was at least one chromatographic method for each antiserum that yielded results comparable to GC- NICI-MS. Direct radioimmunoassay of urine without chromatography yielded markedly elevated and variable results for the four antisera. In contrast, the four antisera gave very similar results with direct assay of media from isolated perfused organs. Thus, for the radioimmunoassay of 6-keto-PGF1 alpha in human urine, each antiserum is sensitive to different contaminants in urine and must be individually matched to a chromatographic purification system. PMID- 3839512 TI - Androgen receptors influence the production of pulmonary surfactant in the testicular feminization mouse fetus. AB - A sexual dimorphism in fetal pulmonary maturation has been described in which the female fetal lung produces surfactant earlier in gestation than the male fetal lung. This is felt to be related to the increased incidence in male newborns of the Respiratory Distress Syndrome. Dihydrotestosterone will delay surfactant production in the female fetus, and a relationship between fetal sexual differentiation and fetal lung maturation has been proposed. We hypothesized that the dimorphism in fetal surfactant production is dependent on androgen receptor function. We measured phosphatidylcholine (PC), saturated phosphatidylcholine (SPC), and sphingomyelin (S) in the amniotic fluid of fetal mice of the mouse model of testicular feminization (Tfm mouse). In this model, male carriers of the X-linked Tfm gene have no functional androgen receptors. The mean amniotic fluid phosphatidylcholine to sphingomyelin ratio (PC/S ratio) was 28% higher in females than in normal males, and the amniotic fluid PC/S ratio of the Tfm male fetuses was the same as the females. The ratio of amniotic fluid saturated phosphatidylcholine to sphingomyelin (SPC/S ratio) was lowest in males, intermediate in females, and highest in Tfm males. A significant relationship between the fetal groups and the amniotic fluid SPC/S ratio was identified by analysis of variance. There were no differences in the whole lung phospholipid content between the three groups. To substantiate the effect of androgen receptors, dihydrotestosterone was injected into pregnant carriers of the Tfm mutation, 2.5 mg/d from day 10 of gestation through the day of sacrifice. The amniotic fluid PC/S ratio was decreased in the female fetuses (consisting of both homozygous normal and heterozygous carriers of the Tfm gene), but not in the Tfm male fetuses. The overall result was no significant difference between the male and female amniotic fluid PC/S ratio while the Tfm amniotic fluid PC/S ratio remained at the level of the untreated females. We conclude that androgens affect fetal lung development via a mechanism dependent on the presence of androgen receptors. PMID- 3839513 TI - Utilization of local first aiders in the provision of health care for prisoners by the International Committee of the Red Cross in Nicaragua. AB - The results of a time study and the preliminary collection of morbidity data in rural prisons of Nicaragua prompted the medical delegate of the International Committee of the Red Cross (ICRC) to outline an assistance program based on three principles: (a) that the system be in line with the projects of the national health agencies; (b) that locally recruited and trained health workers become the primary directors of health care in prisons; and (c) that the medical delegate of the ICRC act as advisor to the local health workers. PMID- 3839514 TI - Protein sources evaluated for ruminating Holstein calves. AB - Fifty calves were fed a basal diet of 11.6% crude protein or one of four diets (15.5% crude protein) containing added soybean meal, corn gluten meal, cottonseed meal, or fish meal. Diets were calculated 75% total digestible nutrients. Body weight gain increased an average of 17% with added protein. Fish meal and soybean meal generated highest rates of gain. Ruminal ammonia-nitrogen was higher for soybean meal and cottonseed meal than other diets, indicating greater rates of degradability. Molar proportions of rumen volatile fatty acids were not different among diets, but concentration was lower for fish meal. Serum urea nitrogen was lowest for the basal and fish meal diets. Microbial nitrogen in the abomasum was 33.6% of total nitrogen for corn gluten meal and 42.8% for soybean meal. Apparent dry matter and nitrogen digestibilities were greater for corn gluten meal and fish meal diets than for soybean meal or cottonseed meal diets. Rumen degradability of feedstuffs, as determined by dacron bag technique, ranged from 38.1% for corn gluten meal to 71.3% for soybean meal. Degradability of mixed diets reflected those of the protein supplement present in each diet except for diet containing cottonseed meal. Fish meal and soybean meal were better protein sources for growth of ruminating calves than were corn gluten meal or cottonseed meal. PMID- 3839515 TI - Health plan selection in the Federal Employees Health Benefits Program. AB - A survey of over 8,500 employees of the U.S. Department of Health and Human Services (DHHS) during the May 1982 open season, supplemented by enrollment data for all DHHS employees enrolled in the Federal Employees Health Benefits Program (FEHBP), was used to study insurance plan selection when multiple fee-for-service options as well as HMOs are available. There is evidence of biased selection of health risks in the FEHBP, yet historically the program has exhibited considerable stability. The stability may be attributable partly to control over entry and over changes in benefits and premiums and partly to inertia on the part of enrollees. In spite of large changes in relative premiums and benefits, only 21 percent of all enrollees in the DHHS switched plans during the May 1982 open season. Those employees who did switch plans astutely identified bargains; on average they lowered their annual contribution to premium by almost 40 percent while maintaining the level of benefits. Insurance plans offering relatively generous coverage of a particular service attract a disproportionately high share of enrollees who expect substantial use of that service. The extent of adverse or beneficial selection into HMOs depends on the price and the comprehensiveness of benefits of each available fee-for-service option. PMID- 3839516 TI - Campylobacter infection in urban and rural populations in Scotland. AB - A review of campylobacter infection in Scotland over five years (1978-82), during which 7808 human isolates were recorded (mean annual isolation rate of 30 per 100000), revealed differences in the epidemiology of the disease between rural and urban populations which were not apparent in the national data. The incidence of infection in the two rural areas studied was greatest in the early months of the year, whereas that in the two urban areas showed a third-quarter predominance. In both urban and rural populations, age-specific infection rates were highest in children less than 5 years old, but this trend was more pronounced in rural than urban populations. Conversely, secondary peaks in age specific infection rates observed in young adults were more pronounced in the urban than rural populations. It is postulated that rural children were being infected by campylobacters at an early age by drinking contaminated raw milk which was not normally available to city residents. The lower incidence in adults in the rural populations is interpreted as indicating more widespread immunity, resulting from greater exposure to infection during childhood. The effect of compulsory heat treatment of milk sold in Scotland, introduced in August 1983, is currently being studied. PMID- 3839518 TI - Educational software: evaluation? No! Utility? Yes! PMID- 3839517 TI - [Pregnancy following removal and chemotherapy of malignant mixed germ cell tumor of the ovary]. PMID- 3839519 TI - A convenient six-point blood sampling schedule for determining whole body cholesterol kinetics in humans. AB - Parameters of total body cholesterol metabolism in humans can be determined by using a three-pool model to analyze the turnover of plasma cholesterol following the injection of radiolabeled cholesterol. In the past this required a rigorous schedule of approximately 36 blood samples over a 10-month period. We have developed a convenient sampling schedule involving only six large samples, each analyzed in sextuplicate. Such a reduction in the frequency of samples is possible only when considerable confidence in the model is available. In general, the simplified sampling strategy depends upon considerable prior experience with the model, only moderate biological error, and estimatable subject to subject variation in model parameters. Because the timing of the samples is critical and because the optimal times will differ for different subjects, the six-point strategy involves using the first three samples (drawn at days 1, 7, and 24 or, for hypercholesterolemic subjects, at days 1, 8, and 28) in conjunction with results from previous studies to set the time for the next sample; the process is reiterated for the last two points. In this study, we have compared parameter estimates obtained by the new six-point schedule with those obtained simultaneously (in the same, single turnover study) by the old 36-point schedule in the same 26 subjects. Both schedules gave comparable values. In particular, the coefficients of variation between values obtained by the two methods for each of the four parameters for which we have developed predictive equations were quite low: PR 1.5%, M1 4.1%, M3min 13%, Mtot min 4.3%. The simplified six-point schedule makes it feasible to study long-term cholesterol turnover in substantial numbers of patients. PMID- 3839520 TI - Nucleotide sequence of the respiratory syncytial virus phosphoprotein gene. AB - A cDNA library was prepared from poly(A)+ RNA extracted from respiratory syncytial (RS) virus-infected HEp-2 cells. A recombinant plasmid, pRSP68, encoding the RS virus phosphoprotein gene was identified by translation in vitro of hybrid-selected mRNA. The cloned cDNA insert of 1 kb was sequenced and a polypeptide of 241 amino acids with a molecular weight of 27 166 was deduced from the sequence. The protein was relatively rich in polar amino acids and devoid of both cysteine and tryptophan. A second short open reading frame with a coding potential of 65 amino acids was identified and overlapped the 3' terminus of the phosphoprotein gene by 34 bases. PMID- 3839521 TI - CSF sulfoconjugated catecholamines in man: their relationship with plasma catecholamines. AB - Simultaneous plasma and cerebrospinal free and sulfoconjugated norepinephrine, epinephrine, dopamine and homovanillic acid determinations in 38 patients with various neurological disorders have shown consistently lower concentrations of dopamine sulfate, norepinephrine sulfate, and epinephrine sulfate in the cerebrospinal fluid than in plasma. An approximately three fold increase of plasma dopamine sulfate concentrations following banana ingestion did not result in increased dopamine sulfate concentrations in cerebrospinal fluid. There were positive correlations between plasma and cerebrospinal fluid concentrations of free norepinephrine and epinephrine as well as norepinephrine sulfate, dopamine sulfate and free homovanillic acid. Cerebrospinal fluid and plasma are apparently separated by the blood-brain barrier impermeable to catecholamine sulfates from the blood. Some other data and the observed positive correlation between cerebrospinal fluid and plasma dopamine and norepinephrine sulfates suggests however that catecholamine sulfates may pass from cerebrospinal fluid to the blood and reflect events in the brain. PMID- 3839522 TI - Distribution of neuropeptide Y-like immunoreactivity and its relationship to FMRF amide-like immunoreactivity in the sixth lumbar and first sacral spinal cord segments of the rat. AB - The present study was aimed at describing the distribution of neuropeptide Y (NPY)-like immunoreactivity in the sixth lumbar (L6) and first sacral segments (S1) of the rat spinal cord, comparing this distribution to that of FMRF-amide like immunoreactivity and determining whether NPY- and FMRF-amide-like immunoreactivities are present in the same neurons in the dorsal gray commissure (DGC) in L6 and S1 of the rat spinal cord. For distribution studies tissue from colchicine-treated animals was processed according to the peroxidase antiperoxidase technique using anti-NPY as the primary antiserum. For co localization studies serial 5-micron sections were processed for immunofluorescence. Adjacent sections were incubated with either anti-NPY or anti FMRF-amide as the primary antiserum. The number of immunoreactive cells per section was counted and each section was photographed. The sections were then restained with the other antiserum (i.e., tissue first stained with anti-NPY was stained with anti-FMRF-amide and vice versa), the number of cells per section was recounted, and the sections were rephotographed. NPY-like immunoreactive cells and fibers were identified in the DGC, sacral parasympathetic nucleus, substantia gelatinosa, marginal zone, nucleus proprius, and ventral horn. Every cell in the DGC that contained NPY-like immunoreactivity was found also to contain FMRF-amide like immunoreactivity, and the distribution of NPY-like immunoreactive fibers was found to be similar, although denser than FMRF-amide-like immunoreactive fibers. The distribution of NPY-like immunoreactivity in L6 and S1 of the rat spinal cord suggests that an NPY-like peptide may be involved in regulation of pelvic viscera, processing of primary afferent information, and motor regulation of pelvic muscles. The presence of NPY- and FMRF-amide-like immunoreactivities in the same neurons in the DGC together with the lack of bona fide FMRF-amide in the rat central nervous system, the presence of NPY in the rat central nervous system, and the cross-reactivity of anti-FMRF-amide with NPY support the hypothesis that the FMRF-amide antiserum recognizes an NPY-like peptide in the rat spinal cord. PMID- 3839523 TI - Comparison of the distributions of ipsilaterally and contralaterally projecting corticocortical neurons in cat visual cortex using two fluorescent tracers. AB - Using the retrograde fluorescent tracers Fast Blue and Diamidino Yellow we have studied the callosal and ipsilateral corticocortical connections between the cat's area 17/18 border region and the posteromedial lateral suprasylvian visual area (PMLS), as well as the callosal connections of each of these regions with its contralateral homologue. The main goal was to determine whether single cortical neurons project with branching axons to more than one cortical target. In addition, the double-labeling technique enabled us to examine, within a single section of cortical tissue, the relative distributions of neurons with different cortical targets. Most corticocortical neurons labeled in the area 17/18 border region and in area PMLS projected to only one of the cortical injection sites tested. When two callosal neuron types were labeled in the same area, no double labeled neurons were found. When ipsilateral corticocortical and callosal neurons were labeled in combination, a few double-labeled neurons were found in both cortical regions examined. The most common type of double-labeled neuron was located in area PMLS and projected bilaterally to the area 17/18 border region. Our findings regarding the laminar distributions of ipsi- and contralaterally projecting neurons are in agreement with previous studies. In addition, we have found that, for callosal neurons within the upper layers of areas 17 and 18, neurons projecting to the contralateral area 17/18 border are located in the lower half of layer II/III and in upper layer IV, whereas neurons projecting to contralateral area PMLS are restricted to the lower portion of layer II/III. In addition, for callosal neurons within the deep layers of area PMLS, neurons projecting to contralateral area PMLS are located throughout layers V and VI, whereas neurons projecting to the contralateral area 17/18 border are restricted to layer VI. There are numerous other possible targets for axon collaterals not examined in this paper. However, the scarcity of neurons with multiple projections demonstrated in this study reflects the high degree of specificity of cortical connectivity. This anatomical organization may be the basis for a precise channeling of differential information at the single neuron level. PMID- 3839524 TI - On the mechanism of acetylcholine receptor accumulation at newly formed synapses on chick myotubes. AB - We have examined the specificity and the mechanism of acetylcholine receptor (AChR) accumulation at embryonic chick nerve-muscle contacts that form in culture. Spinal cord motoneurons were identified in vitro after labeling them in vivo with Lucifer Yellow-wheat germ agglutinin conjugates. All of their processes induced receptor clusters on contacted myotubes; after 24 to 48 hr of co-culture, the incidence of neurite-associated receptor patches (NARPs) was approximately 1.2/100 microns of contact. In contrast, NARPs were rarely associated with spinal cord interneurons (approximately 0.1/100 microns of contact). Neurons dissociated from ciliary ganglia induce NARPS to the same extent as motoneurons. The relative contribution to NARPs of AChRs present in the membrane prior to plating ciliary ganglion neurons and of "new" AChRs inserted 8, 11, or 17 hr after addition of neurons was assessed with two fluorescent receptor probes. Rhodamine-conjugated alpha-bungarotoxin was used to label either old or new receptors; a monoclonal, anti-receptor antibody visualized with fluorescein-second antibody was used to label all (new and old) receptors. Analysis of digitized fluorescence images showed that NARPs contained both new and old receptors but that within the first 24 hr of co-culture the majority (60 to 80%) were new. We estimate that cholinergic neurites increase the rate of receptor insertion 4- to 5-fold during the first 8 hr of NARP formation. The contribution of new receptors to NARPs declines with time. After 3 days of co-culture, receptors inserted over an 8-hr interval comprised only 20% of the total NARP complement.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839525 TI - Beagle puppy model of perinatal cerebral infarction. Acute changes in cerebral blood flow and metabolism during hemorrhagic hypotension. AB - Asphyxia, with its attendant hypotension, is by far the most common cause of neonatal cerebral infarction and frequently results in lesions of the parieto occipital white matter. This study examines the effects of hypotension on regional cerebral blood flow (CBF), local cerebral glucose utilization (LCGU), and serum prostaglandin levels in newborn beagle pups. The animals (24 to 96 hours old) were anesthetized, tracheotomized, and paralyzed. Pups were randomly divided into two groups: one was subjected to hemorrhagic hypotension and the other received no insult. Hypotension was induced by slow venous hemorrhage to maintain a mean arterial blood pressure of 20 to 30 mm Hg. Autoradiographic determinations of LCGU using carbon-14 (14C)-2-deoxyglucose were performed 45 minutes after randomization to groups. Autoradiographic determinations of CBF were performed using 14C-iodoantipyrine on a second group of pups 15 minutes after randomization. Prostaglandins were measured immediately before and 15 minutes after insult or control manipulation. There were no significant differences in the values for thromboxane B2 or 6-keto-prostaglandin F1 alpha, the stable breakdown products of thromboxane A2, and prostacyclin. Prostaglandin E2 levels significantly increased in response to hemorrhagic hypotensive insult. In addition, although regional CBF was maintained in cortical and central gray matter structures during hypotension, CBF to the periventricular temporal and parietal white matter zones significantly decreased, and LCGU was increased in these same regions during hypotensive insult. The uncoupling of CBF and metabolism in these periventricular white matter regions may be responsible for the neuropathological sequelae of perinatal asphyxia. PMID- 3839526 TI - The effect of 1,25-dihydroxycholecalciferol on the changes of bone gamma carboxyglutamic acid-containing protein in bone and serum of developing chick. AB - The effects of 1,25-dihydroxycholecalciferol(1,25-(OH)2-D3) injection into developing chick embryos on bone gamma-carboxyglutamic acid-containing protein (BGP) levels in bone and serum were observed in relation to those on calcium metabolism using chick embryos and chicks aged from 13 days' incubation to 7 days of age. Chick BGP was determined by radioimmunoassay using antiserum to purified chick BGP. The injection of 1,25-(OH)2-D3 into the developing chick embryos of 13 days' incubation resulted in the increases of bone BGP levels at hatching and at 2 days of age. However, the distribution of bone BGP at hatching was not influenced by 1,25-(OH)2-D3. On the other hand, serum BGP levels were significantly increased by 1,25-(OH)2-D3 at 14, 15, 18 days' incubation and at 2 days of age. The early changes of serum BGP levels after 1,25-(OH)2-D3 treatment were correlated with the increases of serum calcium concentrations and the decreases of inorganic phosphorus concentrations. These results suggest that 1,25 (OH)2-D3 may directly or indirectly mediate BGP synthesis or secretion associated with calcium metabolism. PMID- 3839527 TI - Bacteriostatic qualities of human milk. AB - A practical concern of the working mother is the bacteriostatic quality of human milk over time without benefit of refrigeration. Therefore, quantitative cultures of human milk stored at room temperature were performed at 0, 2, 4, 6, and 24 hours after expression. Milk from 10 mothers less than six days postpartum (colostrum) and from 10 mothers 7 to 42 weeks postpartum (mature milk) was studied. The number of colony-forming units per milliliter of milk cultured at 0 time did not significantly increase in mature milk after 6 hours nor in colostrum after 24 hours of storage at room temperature. Thus, mothers who express milk for their own infants while at work may assume that the bacterial contamination of their milk will not increase significantly for up to but no longer than 6 hours after expression, even if they have no access to refrigeration. PMID- 3839528 TI - Accumulation of galactose-1-phosphate in the galactosemic fetus despite maternal milk avoidance. PMID- 3839529 TI - Bayesian estimation and prediction of clearance in high-dose methotrexate infusions. AB - Much attention has been paid to the problem of estimating the pharmacokinetic parameters of individual patients in order to optimize dosage choices. Individual kinetics determined by test-dose bolus injection are a basis for predicting drug concentrations after high-dose methotrexate infusion and for computing appropriate dosages. Simplifications may be attempted, even allowing the test dose to be omitted by using Bayesian estimation rather than likelihood estimation. To individualize pharmacokinetic parameters, Bayesian estimation combines information about population characteristics and those of individuals based on few measured plasma levels during high-dose infusion. Application of this procedure to methotrexate reveals interesting predictive performances and ability to handle variation due to intraindividual time variability without using test doses. The methodology promises to be more efficient in computing dosages in order to avoid toxic levels and will be less expensive in routine clinical use. PMID- 3839530 TI - STRITERFIT, a least-squares pharmacokinetic curve-fitting package using a programmable calculator. AB - A program is described that permits iterative least-squares nonlinear regression fitting of polyexponential curves using the Hewlett Packard HP 41 CV programmable calculator. The program enables the analysis of pharmacokinetic drug level profiles with a high degree of precision. Up to 15 data pairs can be used, and initial estimates of curve parameters are obtained with a stripping procedure. Up to four exponential terms can be accommodated by the program, and there is the option of weighting data according to their reciprocals. Initial slopes cannot be forced through zero. The program may be interrupted at any time in order to examine convergence. PMID- 3839531 TI - Dependence of solute solubility parameters on solvent polarity. AB - In nonpolar solvents a solute may self-associate through polar interactions, exposing its nonpolar surface to a solvent with a low solubility parameter, delta 1. In polar solvents a solute is solvated, presumably, by the polar groups of the solvent. This "chameleonic" effect results in different solubility parameters for a solute, depending on the polarity of the solvent. This report presents data for solute solubility parameters in solvents of variable polarity and gives suggestions for dealing with the chameleonic effect associated with solute solvent interaction. PMID- 3839532 TI - [Fungal mycotic aneurysms and multiple cerebral abscesses caused by Scedosporium apiospermum. Apropos of a case with review of the literature]. AB - The authors report a case of intracranial fungal aneurysm and brain abscesses. The compromised host was a young drowned woman. Scedosporium Apiospermum was isolated in fungal culture from abscess. Radiological and clinical pictures are typical of the hyphal form. PMID- 3839533 TI - Albumin is required to support the acrosome reaction but not capacitation in mouse spermatozoa in vitro. AB - Albumin was required specifically for penetration of the zona pellucida (less than 10% of eggs fertilized in the absence of albumin), but was not required for capacitation. A similar rate of capacitation was observed in the presence of albumin at concentrations ranging from 30 to 1 mg/ml, while a slightly slower rate was observed in the presence of 0.25 and 0.1 mg albumin/ml. In the absence of albumin, capacitation occurred at a rate which lagged behind that of the albumin-incubated counterparts by about 30 min; once capacitated, the addition of albumin promoted rapid sperm penetration. In albumin-free media (+/- the macromolecule PVA), sperm motility was frequently reduced, with fewer cells exhibiting hyperactivated motility, but improvements were observed after introduction of albumin. Acrosome loss was significantly lower in the absence of albumin, but within 5 min of its addition at concentrations ranging from 30 to 0.1 mg/ml to capacitated sperm suspensions, acrosome loss was stimulated and reached levels similar to those seen in control samples. Therefore, albumin can trigger the acrosome reaction in capacitated spermatozoa. It appears to act by assisting in the removal of a surface-associated inhibitory component, the presence of which stabilizes the sperm membranes and inhibits the acrosome reaction. PMID- 3839535 TI - The clinician and the laboratory diagnosis of sexually transmitted diseases: a symposium. PMID- 3839534 TI - The role of uterine luminal fluid in uterine contractions, sperm transport and fertility of rats. AB - The role of accumulated intrauterine fluid in rats at oestrus was investigated by experimentally altering the fluid volume in 106 rats. Complete evacuation of uterine fluid or low natural fluid volume did not significantly reduce the number of embryos on Day 10 of pregnancy overall. Transuterine (but not transcervical) sperm transport was reduced by uterine fluid removal, but did not vary significantly with naturally occurring variations in fluid content. Irrespective of fluid content, transuterine sperm transport was, on average, greater in right than left horns. Distensible balloons inserted into the uterus indicated that increasing and decreasing volume increased and decreased respectively myometrial activity at oestrus and dioestrus. Left horns contracted less frequently than did right horns at low volumes. While uterine fluid volume clearly affected uterine contractility and transuterine sperm transport, we were unable to demonstrate a major role of fluid for fertility. PMID- 3839536 TI - Familial "hashitoxic' periodic paralysis. AB - Four members of a Chinese family who had thyrotoxicosis and periodic paralysis are described. Two of these patients had "hashitoxicosis' (Graves' disease and Hashimoto's thyroiditis) as evidenced by the presence of thyroid antibodies in addition to elevated thyroxine (T4) levels. The other two patients were not available for testing. The association of the familial occurrence of "hashitoxicosis' and periodic paralysis does not appear to have been reported previously. PMID- 3839537 TI - Low dose 131I in treatment of Graves' disease. PMID- 3839538 TI - 1984 A.A.S.T. presidential address: medical education and the trauma surgeon--the role of the A.A.S.T. PMID- 3839539 TI - Trace elements in Thai breast milk and infant formulas. PMID- 3839540 TI - Treatment of infantile diarrhoea with standard oral rehydration solution and early introduction of milk feeds. PMID- 3839541 TI - The effect of molsidomine on intramyocardial pressure and regional myocardial blood flow in the canine ischemic myocardium. AB - Molsidomine was administered intraduodenally to anesthetized dogs which were instrumented for measurements of aortic and left ventricular (LV) pressures, coronary perfusion pressure, intramyocardial pressure in the subendocardium, and subendocardial and subepicardial myocardial blood flow in the ischemic and non ischemic regions. The dogs were divided into two groups: group M (n = 9) was administered molsidomine (0.2 mg/kg), group S (n = 10), saline only. Maximum LV systolic pressure decline was 20% in group M and 3% in group S (p less than 0.05). Maximum LV end-diastolic pressure decline was 63% and 35% in groups M and S, respectively (p less than 0.05). There was no difference between mean aortic pressure and coronary perfusion pressure between the two groups. The subepicardial blood flow in the ischemic region was decreased (-23% in group M vs 5% in group S; p less than 0.05), but subendocardial blood flow in the ischemic region increased only slightly in group M. The ratio of subendocardial to subepicardial blood flow increased at 15 and 30 min after administration of molsidomine in the ischemic area (67% in group M vs -10% in group S; p less than 0.05), but did not show any change in the non-ischemic region. Intramyocardial pressure at systole did not show any change but it decreased at end-diastole, ( 32% in group M vs -7% in group S; p less than 0.05). Thus molsidomine redistributed the myocardial blood flow from the subepicardium to the subendocardium and from the non-ischemic to the ischemic region. This redistribution was associated with a reduction in both LV end-diastolic pressure and intramyocardial pressure at end-diastole. PMID- 3839542 TI - The effect of cimetidine on natural killer activity of peripheral blood lymphocytes of patients with ovarian carcinoma. AB - The effect of cimetidine on the natural killer (NK) activity of peripheral blood lymphocytes (PBL) of 32 patients with ovarian carcinoma was studied before and after surgery or chemotherapy. There was no significant difference in the NK activity between normal healthy women and patients who had been disease-free for more than a year after initial surgery, while those in patients with a large residual tumor after surgery were profoundly suppressed. Cimetidine stimulated the NK activity in the disease-free patients in vivo or in vitro. In addition, cimetidine augmented the response to phytohemagglutinin of PBL from the disease free patients. The NK activity of PBL of patients with a large residual tumor under chemotherapy consisting of cisplatinum, adriamycin and cyclophosphamide, "CAP," was about half of that before initiation of chemotherapy. The inhibition of the NK activity by chemotherapy was abrogated by in vitro exposure of the PBL to cimetidine. PMID- 3839543 TI - [Enhancement of resistance to microbial infection]. PMID- 3839544 TI - [Limitation of disorders of the contractile function of the nonischemic areas of the myocardium during infarct by using the delta-sleep peptide and its cyclic derivative]. AB - The effect of pretreatment with delta-sleep peptide (DSP) and its cyclic analogue (cDSP) on right-atrial myocardial distensibility and contractility disturbances in left-ventricular infarction (according to Selye) was studied in Wistar rats. These peptides, administered in a 20 micrograms/kg dose, 1 hour before the induction of experimental infarction, significantly limited the infarct-related depression of atrial distensibility and contractility, and also reduced atrial resistance to hypoxia and excessive calcium. Since infarction-associated disorders of myocardial structure and function in non-ischemic regions of the heart are due to the emotional-painful stress that accompanies the infarction, it can be assumed that the protective effect of DSP and cDSP consists in limiting the stress-induced response. PMID- 3839546 TI - [Endogastric lymphocytic lymphosarcoma simulating a chronic callous gastric ulcer]. PMID- 3839545 TI - Effects of vitamin D on renal handling of calcium, magnesium and phosphate in the hamster. AB - The effects of 1,25(OH)2D3 on the renal handling of calcium (Ca), magnesium (Mg), and phosphate (Pi) in the thyroparathyroidectomized (TPTX) hamster were studied in the presence of exogenous PTH. Clearance experiments were performed in the following groups: acutely TPTX animals (group 1), acute TPTX plus continuous infusion of PTH in low or high doses sufficient to (1) reduce or (2) abolish the hypocalcemic effect of TPTX (groups 2 and 3, respectively), and acute TPTX plus Ca (group 4) or Pi (group 5) infusion. Each group was subdivided into control and experimental subgroups. In all animals an initial control phase was followed by a second phase in which experimental animals received an infusion of 1,25(OH)2D3 (1 U prime + 0.5 U/hr) while control animals received only the ethanol vehicle. GFR and urine flow rate, were not altered significantly in any of the groups. PCa and PMg increased significantly in group 3 only. Group 2 showed an increase in FECa (5.2 +/- 1.4 to 13.2 +/ 2.2%, P less than 0.001) and FEMg (7.3 +/- 1.3 to 17.3 +/ 2.2%, P less than 0.001) in response to 1,25(OH)2D3. Group 3 showed a significant increase in FEMg only (2.2 +/- 0.4 to 5.5 +/- 1.0%, P less than 0.01). The changes in the control groups were not significant. The administration of 1,25(OH)2D3 reduced phosphate excretion only in the presence of PTH. The FEPi decreased from 11.9 +/- 2.1 to 3.6 +/- 0.9% (P less than 0.001) in group 2 and 29.2 +/- 4.0 to 16.5 +/- 2.5% (P less than 0.02) in group 3.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839547 TI - Diagnostic exercise: lymphoproliferative disorder in a ferret. PMID- 3839548 TI - The role of thromboxane in primate endotoxin shock. AB - Previous studies have suggested an important role of thromboxane (Tx) in the pathogenesis of endotoxin shock in the rat. The present study evaluated the role of thromboxane in an LD70 primate model of endotoxin shock by administering 6 mg/kg of endotoxin to three groups of animals that were pretreated with either saline (5 ml), OKY 1581 (2 mg/kg, 10 min prior), or imidazole (25 mg/kg/hr starting 30 min prior), groups I, II, and III, respectively. There were significant differences between the groups with respect to changes in MAP, PAP, and CO. OKY 1581 effectively blocked endotoxin-induced increase in plasma Tx. However, as a result of shunting of the endoperoxides into the prostacyclin pathway, there was a greater increase in plasma 6-keto PGF1 alpha, the stable hydrolysis product of prostacyclin. Imidazole augmented the formation of both prostacyclin and Tx. Despite the differences in plasma prostanoids, there was no difference between the groups with respect to changes in platelet or WBC counts, nor in survival: I (4/10); II (4/10); III (2/6). CONCLUSIONS: (i) endotoxin induced neutropenia and decrease in the platelet count are not Tx mediated; (ii) Tx is not solely responsible for the decrease in CO during endotoxin shock; (iii) it is possible to prevent endotoxin-induced increase in the PAP by either blocking Tx formation or by increasing endogenous PGI2 production; and (iv) Tx may not be a major contributing factor in the mortality of endotoxin shock in baboons. PMID- 3839549 TI - Arguments against and alternatives for an extracellular surfactant layer in the alveoli of mammalian lung. AB - It is generally believed that lung alveoli contain an extracellular aqueous layer of surfactant material, which is allegedly required to prevent alveolar collapse at small lung volume; the surfactant's major constituent is a fully saturated phospholipid, referred to as dipalmitoyl lecithin or DPL. I herein demonstrate that the surfactant hypothesis of alveolar stability is fundamentally wrong. Although DPL is synthesized inside type II epithelial cells and stored in the typical inclusion bodies therein and lowers surface tension to zero in the surface balance, there is no evidence to the effect that type II cells secrete the DPL surfactant into the aqueous intra-alveolar layer which is shown by electron microscopy in support of the surfactant theory. To the contrary, all the evidence indicates that, when seen, such an extracellular layer is an artifact. This is probably upon the damage glutaraldehyde inflicts onto alveolar structures during fixation of air-inflated lung tissue. Furthermore, several cogent arguments invalidate the belief that an extracellular layer of DPL and serum proteins is present in the alveoli of normal lung. In light of these arguments, a surface tension role of DPL in alveolar stability is excluded. Three hypotheses for an alternative role of DPL in respiration mechanics are proposed. They are: (a) alveolar clearance by viscolytic and surfactant action (bubble or foam formation) on the aqueous systems which are present in lung alveoli during edema and in prenatal life and which would otherwise be impervious to air; (b) homeostasis of blood palmitate in normal lung; (c) modulation of the elasticity of terminal lung tissue by the intact inclusion bodies and parts thereof inside type II cells in normal lung. PMID- 3839550 TI - Role of gain programming in the voluntary movement of the human forearm. PMID- 3839551 TI - Real-time digital-filter-based data-acquisition system for the detection of neural signals. PMID- 3839552 TI - Digital filtering of physiological signals with minimal distortion. PMID- 3839553 TI - Data acquisition from an electronic particle counter using a minicomputer. PMID- 3839554 TI - [Consumption, diet habits and nutritional status of the population of Reus (III): distribution, by age and sex, of the consumption of milk, milk products, visible vegetable fats and vegetables]. PMID- 3839555 TI - [SARA and Ureaplasma urealyticum]. PMID- 3839556 TI - Statistical approaches in toxicology: the use of factorial designs and multivariate methods. PMID- 3839557 TI - Comparison of the effects of neuropeptide Y and adrenergic transmitters on LH release and food intake in male rats. AB - In view of the recent demonstrations that Neuropeptide Y (NPY) and adrenergic transmitters coexist in neurons of the rat brain, we have compared the effects of intraventricular (Ivt) injections of NPY and catecholamines on LH release and food intake in intact male rats. Of the three catecholamines, dopamine (DA), norepinephrine (NE) and epinephrine (E), only E (5.3 micrograms or 15.9 micrograms/rat) significantly stimulated LH release, although NE and E (5.3 micrograms/rat) were equally effective in eliciting food intake in satiated rats. Ivt administration of 10 micrograms NPY significantly stimulated LH release, whereas either lower (0.5 or 2 micrograms/rat) or higher (25 micrograms/rat) doses were ineffective. In contrast, NPY at doses of 0.5 - 10 micrograms/rat increased cumulative food intake in a dose-related fashion. These findings present preliminary evidence of the physiological correlates of the neuronal coexistence of adrenergic transmitters and NPY in the brain and raise the possibility that NPY may normally act either independently, in concert with or via adrenergic systems to evoke LH release and feeding responses in the rat. PMID- 3839558 TI - Maintenance of hamstring strength following knee surgery. AB - Following a variety of surgical procedures on the knee, routine clinical Cybex testing demonstrated that the hamstring muscle group loses less strength than the quadriceps group, regardless of whether the hamstrings were exercised during the rehabilitation. Two groups of postsurgical patients were randomly selected to evaluate the effects of surgery on the muscle strength of the quadriceps and hamstrings. Group I (N = 15) underwent arthrotomy and medial meniscectomy. Group II (N = 20) underwent an extraarticular substitution of the anterior cruciate ligament. All subjects were tested on a Cybex II at 60 degrees/s: Group I at 5-10 wk (mean, 7.0), and Group II at 15-22 wk (mean, 18.6). Peak torque for the quadriceps and hamstrings was measured at 30, 60, and 90 degrees. The percent deficits of the quadriceps and hamstrings were analyzed by a three-way ANOVA. The hamstring deficit was significantly less (P = 0.041) than the quadriceps deficit. A significant difference (P less than 0.001) was found between the two surgery groups. No significant difference in percent strength deficit was found at the various joint angles (30, 60, and 90 degrees). Lastly, the factors examined in the ANOVA did not contribute to a significant first or second order interaction. The authors conclude that specific hamstring strengthening postsurgically is not always indicated. PMID- 3839559 TI - Contrasting effects of 1,25-dihydroxyvitamin D3 on bone matrix and mineral appositional rates in the mouse. AB - In order to determine the effects of 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) on bone matrix appositional rate (Ma AR) and bone mineral appositional rate (Mi AR), three doses (0.06, 0.13 and 0.20 microgram/kg/d) of 1,25(OH)2D3 were continuously infused for seven days in young mice. Histologic parameters of bone formation and resorption were evaluated by morphometric and autoradiographic methods. All doses of 1,25(OH)2D3 increased serum calcium and produced a dose-related increase in the metaphyseal osteoclastic surface and in the number of acid phosphatase stained osteoclasts. The Mi AR evaluated by double tetracycline labeling was enhanced at all dosage levels. By contrast the Ma AR evaluated by double 3H proline labeling was decreased at the two highest doses of 1,25(OH)2D3 which also produced growth impairment. We concluded that the continuous administration of 1,25(OH)2D3 in the mouse produces contrasting effects on bone matrix synthesis and calcification, resulting in a dose-related reduction in the amount of osteoid. PMID- 3839560 TI - Familial visual loss and a vanishing brain tumour. PMID- 3839561 TI - Graves' disease: blood samples. PMID- 3839562 TI - The binding of a 2-chloroethylamine derivative of oxotremorine (BM 123) to muscarinic receptors in the rat cerebral cortex. AB - The interaction of a mustard analogue of oxotremorine, N-[4-(2 chloroethylmethylamino)-2-butynyl]-2-pyrrolidone (BM 123), with muscarinic receptors in the rat cerebral cortex was investigated using 3H-ligand-binding methods. When cortical homogenates were preincubated with BM 123 (1.0 mM), washed extensively, and then assayed for the binding of the specific muscarinic antagonist, [3H](-)-N-methylscopolamine, a decrease in binding capacity was noted without an accompanying change in affinity. The rate at which BM 123 alkylated muscarinic receptors was sensitive to temperature, with little or no receptor alkylation occurring at 0 degree. Thus, it was possible to estimate the affinity of BM 123 and its transformation products for muscarinic receptors by measuring their ability to competitively inhibit 3H-ligand binding to cortical homogenates at 0 degree. When measured by competitive inhibition of [3H]oxotremorine-M and [3H](-)-N-methylscopolamine binding, the concentrations of the aziridinium ion of BM 123 required to displace 50% of specific 3H-ligand binding were 3.5 nM and 4.5 microM, respectively. In contrast, the parent 2-chloroethylamine and its alcoholic hydrolysis product were much less active. The kinetics of the alkylation of muscarinic receptors by BM 123 were consistent with a model in which the aziridinium ion rapidly forms reversible complexes with superhigh high and low affinity sites which slowly convert to covalent complexes. The rate of alkylation of the superhigh affinity site was slowest whereas the converse was true for the low affinity site. It was possible to alkylate the high and low affinity sites selectively with BM 123 by taking advantage of kinetic differences in the rates of alkylation of these two sites. Atropine, oxotremorine, and oxotremorine-M antagonized the rate of alkylation of muscarinic receptors in a manner that was consistent with competitive inhibition. PMID- 3839564 TI - Probing the combining site of monoclonal IgA J539 using deoxyfluoro- and other galactosides as ligands. AB - IgA J539 is a monoclonal anti beta-(1----6)-D-galactopyranan. Measurement of its affinity with a number of synthetic galactosyl oligosaccharides of that linkage type, in which one or more hydroxyl groups have been replaced by a fluorine atom, confirm the assignment of the relative binding strength of the subsites in the protein for the individual galactosyl residues of the antigen. PMID- 3839563 TI - Emetine resistance of Chinese hamster cells: structures of wild-type and mutant ribosomal protein S14 mRNAs. AB - The Chinese hamster ovary (CHO) cell 40S ribosomal subunit protein S14 provides a unique opportunity to investigate an important mammalian housekeeping gene and its mRNA and protein products. The S14 gene appears to be single copy, and CHO cell S14 mutants have been isolated as emetine-resistant (emtB) clones in tissue culture. Thus, S14 is the only mammalian ribosomal protein whose gene structure and function are amenable to straightforward genetic and biochemical analysis. Recently, we isolated a wild-type Chinese hamster lung cell cDNA clone, pCS14-1, including an almost complete copy of the ribosomal protein S14 message (N. Nakamichi, D. D. Rhoads, and D. J. Roufa, J. Biol. Chem. 258: 13236-13242, 1983). Here we describe comparable cDNAs from wild-type and emtB CHO cells. We report both mRNA and polypeptide sequences of the wild-type and mutant ribosomal protein transcripts. As a consequence of the genetic methods used to obtain our emetine resistant mutants, the emtB S14 cDNAs differ from wild-type cDNA by single-base changes. Physical and chemical features of polypeptides encoded by the cDNAs are consistent with well-characterized S14 protein polymorphisms. The three emtB mutations analyzed affect two adjacent arginine codons within the very basic S14 carboxyl region, indicating a significant role for this portion of the protein in the function and architecture of the mammalian 40S ribosomal subunit. PMID- 3839565 TI - A hapten-induced conformational change accompanies the cryoprecipitation of an immunoglobulin. AB - By simultaneous spectroscopic measurements (absorbance, light scattering, fluorescence and circular dichroism) the temp-dependent behavior of a cryoglobulin, the mouse monoclonal immunoglobulin G to N-acetyllactosamine, has been observed. The results show that a hapten-induced conformational change in the structure of a cryoglobulin can accompany its intermolecular association. This association of the immunoglobulin increases after hapten saturation of its two antigen-combining sites. PMID- 3839566 TI - Reducing the sizes of medical school classes. PMID- 3839567 TI - Effect of bright light in the hospital nursery on the incidence of retinopathy of prematurity. AB - The preterm infant is subjected to prolonged exposure to ambient nursery illumination at levels that have been found to produce retinal damage in animals. We prospectively investigated the effect of exposure to light in two intensive care nurseries by comparing the incidence of retinopathy of prematurity among 74 infants from the standard bright nursery environment (median light level, 60 foot candles [ftc]) with the incidence among 154 infants of similar birth weight for whom the light levels were reduced (median, 25 ftc). There was a higher incidence of retinopathy of prematurity in the group of infants who had been exposed to the brighter nursery lights, particularly in those with birth weights below 1000 g (86 percent vs. 54 per cent, P less than 0.01 by chi-square test). We conclude that the high level of ambient illumination commonly found in the hospital nursery may be one factor contributing to retinopathy of prematurity and that safety standards with regard to current lighting practices should be reassessed. PMID- 3839568 TI - Hazards to vision in the nursery. PMID- 3839569 TI - [A Dutch family with venous thrombosis due to hereditary protein C deficiency]. PMID- 3839570 TI - Intracerebroventricular administration of ethylcholine mustard aziridinium ion (AF64A) reduces release of acetylcholine from rat hippocampal slices. AB - Ethylcholine mustard aziridinium ion (AF64A), or vehicle, was infused bilaterally (3 nmol/3 microliter per side) into the lateral ventricles of rats. The effect of such treatment on various cholinergic responses was measured in the hippocampus, cortex and striatum. Potassium-stimulated release of acetylcholine from superfused slices of hippocampus was reduced, 7 and 21 days after treatment with AF64A, to 24 and 35% of control, respectively. The activity of choline acetyltransferase in the hippocampus also decreased, to 42% of control, both 7 and 21 days after treatment with AF64A. Similarly, the activity of acetylcholinesterase and the high affinity transport of choline in the hippocampus were reduced, to 40 and 30% of control; and to 33 and 48% of control, respectively, 7 and 21 days after treatment with AF64A. Synthesis of acetylcholine in slices of hippocampus was also decreased after treatment with AF64A (71 and 51% of control, 7 and 21 days post-AF64A respectively). Only the binding of [3H]QNB in the hippocampus was unchanged at 7 days after treatment with AF64A, although a small reduction (11%) was noted 21 days after treatment with AF64A. The activity of choline acetyltransferase and acetylcholinesterase, the high-affinity transport of choline and the binding of [3H]QNB in cortex and striatum were unaffected by treatment with AF64A under the same experimental conditions. Using a substantially smaller dose than that earlier reported in mice, the earlier finding was thus confirmed, and extended, in rats, of a highly selective effect of AF64A on several components of the cholinergic system. Under the conditions of this study, these effects appeared to be confined to the hippocampus. PMID- 3839571 TI - Pirenzepine indicates heterogeneity of muscarinic receptors linked to cerebral inositol phospholipid metabolism. AB - Muscarinic receptor-mediated inositol phospholipid metabolism was examined in rat cerebral cortex and medulla-pons slices prelabelled with 3H-inositol. Carbachol stimulated accumulation of 3H-inositol phosphate in both regions with identical EC50 values though the maximal stimulation was considerably greater in cortex. The carbachol response was potently suppressed by atropine with very similar affinities in both regions. However, the M1 antagonist pirenzepine displayed a 10 fold greater affinity for the cortical carbachol response. The data supports the concept of heterogeneity of cerebral muscarinic receptors and suggests that both M1 and M2 sites may be linked to inositol phospholipid metabolism in brain. PMID- 3839572 TI - Release of NPY-like immunoreactive material from primary cultures of chromaffin cells prepared from bovine adrenal medulla. AB - In primary cultures of bovine chromaffin cells, the cell contents of NPY immunoreactive material was found to be stable for about 4 days. When these cells were transferred to the Locke's solution from the culture medium, NPY immunoreactive material was released spontaneously. Addition of potassium (45 mM) resulted in a 3-fold increase in the rate of NPY release in a calcium dependent fashion. NPY immunoreactivity in chromaffin cells is composed of NPY, a lesser immunoreactive peptide and two very minor immunoreactivities. The same immunoreactive peptides were released by 45 mM potassium. PMID- 3839573 TI - Ommaya reservoirs in 387 cancer patients: a 15-year experience. AB - We reviewed records of 387 patients with cancer who had Ommaya reservoirs placed between October 1967 and December 1982. Complications of reservoir placement were reported in 27 patients, including intracranial hemorrhage (5 patients) and reservoir malfunction (15 patients). In 15 of 19 patients with meningitis, the infection was linked to the reservoir. The organism most frequently implicated was Staphylococcus epidermidis. Seizures, leukoencephalopathy, and pericatheter necrosis were seen in 10 patients who had received intraventricular chemotherapy. PMID- 3839574 TI - [Changes in surfactant in ARDS. Effects of PEEP and CPAP on the biochemical composition of surfactant]. PMID- 3839575 TI - Cells of origin of spinopontine fibers in the rat. AB - When wheat germ agglutinin-horseradish peroxidase conjugate was injected into the caudal part of the medial, lateral, ventral and peduncular pontine nuclei in the rat, retrogradely labeled spinal neurons were found contralaterally in the intermediate basilar nucleus (IBN) in the upper two cervical cord segments, and in laminae VI and VII in the lumbar cord segments. The IBN appeared to send fibers mainly to the caudomedial part of the pontine nuclei, while laminae VI and VII of the lumbar cord segments of the caudolateral part of the pontine nuclei. PMID- 3839576 TI - Sarcoma botryoides of the female genital tract. AB - Results of treating 14 patients with sarcoma botryoides of the female genital tract are reviewed. Nine patients were younger than four years old and five were older than 14. Primary tumors were in the vagina (eight), cervix (three), vulva (one), and cervicovaginal region (two). All but one patient underwent surgery, including wide local excision (one), vaginectomy (one), hysterectomy (one), hysterectomy and vaginectomy (two), anterior exenteration (two), and total pelvic exenteration (six). A combination of vincristine, actinomycin-D, and cyclophosphamide was the chemotherapy regimen most frequently administered. Only one of the nine patients receiving chemotherapy died from recurrence. One patient with disease too extensive for surgery received intraarterial vincristine and radiation therapy; 16 years later she developed an adenosquamous carcinoma of the uterus. Sarcoma recurred in three patients. This review of patients treated between 1956 and 1983 reflects the evolution of therapy over 30 years. Conservative surgery alone was inadequate; therefore, radical (exenterative) surgery was adopted; recently less extensive surgery has been combined with chemotherapy, producing satisfactory results. PMID- 3839577 TI - Cerebrovascular hemodynamics during and after recovery from acute asphyxia in the newborn dog. AB - Cerebrovascular volume and transmural pressure loads accompanying acute increases in cerebral blood flow are implicated in the pathogenesis of periventricular intraventricular hemorrhage in preterm infants. An acute increase in cerebral blood flow would be expected during acute recovery from asphyxia. Therefore, cerebrovascular hemodynamics, including flow (microspheres), were studied during and after acute recovery from asphyxia in seven newborn dogs in order to study the determinants of these volume and pressure loads. During the acute recovery phase, cerebral hemispheric blood flow was 69.6 +/- 10 ml/100 g/min (mean +/- SEM) representing a 250% increase from baseline values of 19.9 +/- 1.8 ml/100 g/min (p less than 0.005), while combined cerebellar-brainstem flow was 204.3 +/- 19.3 ml/100 g/min representing a 536% increase from baseline values of 32.0 +/- 1.5 ml/100 g/min (p less than 0.005). Blood flow to both areas had returned to baseline levels 20 min after the onset of recovery. Associated with this cerebral hyperemia was an acute increase in mean arterial pressure from 21.3 +/- 4.5 mm Hg at end asphyxia to 69.5 +/- 6.0 mm Hg at peak recovery (p less than 0.01), and parallel acute increases in sagittal sinus pressure (from 4.0 +/- 0.4 to 14.6 +/- 1.9 mm Hg, p less than 0.01) and cerebrospinal fluid pressure (from 3.8 +/- 0.4 to 14.3 +/- 1.9 mm Hg, p less than 0.01). Central venous pressure fell from 4.3 +/- 0.6 mm Hg at end asphyxia to 1.6 +/- 0.5 mm Hg, and thus is not a determinant of the elevation in sagittal sinus pressure.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839578 TI - Treatment of four patients with erythrophagocytic lymphohistiocytosis by a combination of epipodophyllotoxin, steroids, intrathecal methotrexate, and cranial irradiation. AB - Familial erythrophagocytic lymphohistiocytosis, a rare disorder affecting infants, is characterized by a visceral infiltration of histiocytes and lymphocytes resulting in rapid death. It has recently been reported that use of epipodophyllotoxin, VP 16-213, could induce a complete remission of the disease. Such treatment does not, however, prevent fatal CNS relapse. Four patients with the characteristic features of the disease--fever, hepatosplenomegaly, pancytopenia, low plasmatic fibrinogen level, hyperlipidemia, and histiocytic meningitis--are described. These patients were treated with a combination therapy including systemic administration of VP 16-213, steroids, and intrathecal methotrexate followed by cranial irradiation after the age of 12 months. The four patients achieved complete remission of the disease after clearing of the CNS localization. Two patients had secondary relapses, but all four patients have had a disease-free survival exceeding 12 months. All patients have been in remission of the disease for 27, 20, 16, and 13 months, respectively, after disease onset without major setbacks from the treatment. This combination therapy appears to be a promising approach toward long-term remission of the disease. PMID- 3839579 TI - Bone modulating factors in nephrotic children with normal glomerular filtration rate. AB - Factors influencing bone and mineral metabolism were evaluated in 16 children with active nephrotic syndrome and normal glomerular filtration rate. All patients were proteinuric and/or hypoalbuminemic and had elevated serum triglyceride and cholesterol levels. Seven patients had never received or had discontinued glucocorticoid treatment at least 6 months before the study; six patients were receiving prednisone at the time of study. Although all patients were hypocalcemic (serum total or ionized calcium), none was hypomagnesemic. Despite the low serum calcium levels, circulating immunoreactive parathyroid hormone was elevated in only nine of 16. Plasma 25-hydroxyvitamin D was low in all 16 patients, averaging 7.6 +/- 1.2 ng/mL for the group. In contrast, levels of 1,25-dihydroxyvitamin D were normal in 12 of 14 patients. Bone mineral content measured by photon absorptiometry averaged 83% and was less than 90% of normal in six of nine patients tested. The findings were not influenced by the recent or concurrent administration of glucocorticoid. The data demonstrate abnormalities of mineral and bone modulation in nephrotic children even in the absence of impaired glomerular filtration rate and irrespective of glucocorticoid therapy. The decrease in serum ionized calcium may be related to an absolute deficiency in 25-hydroxyvitamin D and/or a relative deficiency in 1,25-dihydroxyvitamin D. Undermineralization of bone may result from the low levels of vitamin D metabolites and, in some patients, from an increase in immunoreactive parathyroid hormone. Whether treatment with vitamin D metabolites and/or calcium supplementation will prevent the abnormalities remains to be demonstrated. PMID- 3839580 TI - [Comparison of various clinical and hematological features of various types of non-Hodgkin lymphomas of a low degree of malignancy in relation to age groups]. PMID- 3839581 TI - Delayed effects of experimental maternal diabetes on plasma cholesterol level and vascular prostacyclin synthesis in the offspring. AB - The effect of streptozotocin-induced diabetes during pregnancy in rats on prostacyclin synthesis in aorta and heart of offsprings was investigated. Although the aortic and heart syntheses of 6-keto-PGF1 alpha in the offsprings of diabetic rats were not altered at birth, a significant rise in aorta and a decrease in the heart were evident at weaning. At weaning, offsprings of diabetic rats also show a significant rise in plasma cholesterol. These studies show that maternal diabetes might cause effects in the offspring which might become evident in later life. PMID- 3839582 TI - Effects of the beta-carboline, FG 7142, in the social interaction test of anxiety and the holeboard: correlations between behaviour and plasma concentrations. AB - The behavioural effects of the beta-carboline FG 7142 were investigated in the social interaction test of anxiety and the holeboard test of exploration and locomotor activity. FG 7142 (5-20 mg/kg) produced a significant decrease in the time spent in social interaction by pairs of rats, without an accompanying decrease in motor activity. This anxiogenic effect was highly correlated with the plasma concentrations of FG 7142 for the rats receiving 5 and 10 mg/kg doses, but not for those receiving the 20 mg/kg dose. In the holeboard, FG 7142 had no effect on exploratory head-dipping at the doses tested, but selectively reduced locomotor activity and the number of rears. The profile of FG 7142 in these tests is compared with those of the beta-carbolines, B-CCE and B-CCP. PMID- 3839583 TI - Studies on the release of drugs from O/W-emulsion ointments using the mathematical interpretations. Part 1: Influence of the thickness of the ointment layer. AB - The hyperbolic function Q = t/(A + Bt) has been applied to the quantitative description of the release process from the emulsion ointment as influenced by the thickness of the layer. Results have been compared with the analogous ones obtained by the use of Higuchi's "exponential" equations. This comparison leads to the conclusion that the proposed empirical function is especially usefull for thin ointment layers. PMID- 3839584 TI - Elimination kinetics of amsacrine in the rabbit: evidence of nonlinearity. AB - Plasma amsacrine kinetics have been studied in rabbits after different doses (2.5 10 mg/kg) infused over 35 min. Amsacrine concentrations were measured by HPLC and plasma protein binding by equilibrium dialysis. All elimination curves were best fitted by a bi-exponential expression with a mean t 1/2 alpha of 0.56 h and t 1/2 beta of 2.47 h. At doses greater than 5 mg/kg, there appeared to be an overproportional increase in the area under the curve, suggesting non-linear kinetics. Comparison of pharmacokinetic parameters indicated a significant decrease in plasma Cl after the 10-mg/kg dose compared to the 5- and 2.5-mg/kg dose. Amsacrine was highly bound by plasma (96.8%) over the concentration range 1 100 mumol/l. It is concluded that the rabbit is an acceptable model for further studies of the pharmacokinetics of amsacrine and its analogues at doses less than or equal to 5 mg/kg. PMID- 3839585 TI - Statistical software packages for physical therapists. STATPAK for the IBM PC. AB - If you have modestly sized files, modest computing requirements, and only a modest budget, look into STATPAK. Despite the limitations of STATPAK's computational accuracy, data-entry capabilities, and file-size restrictions. It is a package that provides many of the more frequently required statistical routines in physical therapy research. Besides, who knows when you'll need Fourier-transformed nonlinear correlations! Be prepared to spend an evening or two getting used to the cryptic program descriptions. Perhaps a future version will contain a tutorial with sample data to help the beginner get started; a general linear-model routine to permit ANOVAs on unbalanced Ns, assess multivariate hypotheses, and test the compound-symmetry assumption of repeated measured ANOVA would also be welcome. I would first recommend, however, that the documentation problems be addressed; at least let us find "Graphics" or "Chart" in the index, without having to guess that we should look under "Plot"! PMID- 3839586 TI - [Cadexomer iodine: local single-drug therapy of leg ulcers. Study in 45 ambulatory patients]. PMID- 3839587 TI - MR effect on murine spermatogenesis. AB - The cytotoxic effects of magnetic resonance (MR) on spermatogenesis in mice were studied. Mice were exposed to a strong static magnetic field from a 0.3-T MR imaging device. The effect of this treatment on different classes of spermatogenic cells was investigated by counting sperm heads at various times after exposure. Sixty-six hours of continuous exposure did not produce any significant cytotoxicity to these cells. This period of continuous exposure is far longer than any anticipated occupational exposure to humans. Thus, acute and subacute exposure to static magnetic fields associated with diagnostic use of MR imaging devices is unlikely to have any significant adverse effect on spermatogenesis. PMID- 3839588 TI - Gastric ulcer localization by direct in vivo labeling of sucralfate. Work in progress. AB - We developed and evaluated a new procedure for imaging gastric ulcer disease with technetium 99m-labeled sucralfate. The new method employs direct in vivo labeling of sucralfate instead of in vitro labeling using human serum albumin, as previously reported in the literature. Tests using hydrochloric acid and a rabbit ulcer model showed the efficacy of the direct in vivo labeling technique and the ability of the tagged material to bind to ulcers, respectively. In 26 studies using humans with sucralfate labeled directly in vivo, 15 gave true-negative results and 11 gave true-positive results. Of 14 studies using humans with in vitro labeled sucralfate, three gave true-negative results, three gave true positive results, and the results of eight were either false-negative or could not be interpreted because of high levels of activity remaining in the stomach. We suggest that the direct in vivo labeling method significantly improves the sucralfate gastric ulcer imaging technique. PMID- 3839589 TI - FDA's priority-based assessment of food additives. II. General toxicity parameters. AB - We examine in greater depth some general toxicity parameters that have been compiled for food additives in the Priority-Based Assessment of Food Additives project. Correlations between chemical structure categories and basic parameters such as lowest effect level, highest no-effect level, and study duration indicate (among other things) trends in these parameters that are consistent in magnitude and direction with the Concern Level break points proposed in the FDA's Redbook. Certain data on the nature and extent of observed toxic effects of additives, when related to corresponding estimated levels of human intake, help to provide a profile of toxicological characteristics of a number of the regulated additives. The resulting breadth of such a profile reinforces the need for systematic priority setting in the allocation of resources to potential food additive safety concerns. PMID- 3839590 TI - [Treatment of multiple myeloma in stages II and III with melphalan, prednisone, cyclophosphamide, vincristine and BCNU (M-2 protocol)]. PMID- 3839591 TI - [Pulmonary vascular permeability and surfactant]. PMID- 3839592 TI - [Chemotherapy of bronchopulmonary and pleural adenocarcinoma. Apropos of 31 cases]. AB - Between January 1978 and June 1983, 31 patients aged between 35 and 73 years, with an adenocarcinoma of the respiratory system (25 lung cancers and 6 pleural cancers) were treated by chemotherapy, either exclusively or following failure of surgery. In 21 patients, the treatment consisted of a combination of cyclo phosphamide (600 mg/m2), adriamycin (40 mg/m2) and 5-fluoro-uracil (600 mg/m2) by intravenous injection, every four weeks. The other 10 patients received different treatments, but platinum salts were administered in only 2 cases. The treatment was fairly well tolerated (only 1 death due to toxicity), but the effectiveness remained disappointing: only 1 complete response (alive after 48 months), 2 partial responses and 4 stabilisations. The overall median survival was 9 months, with a mean survival of 11.6 months. The mean survival of the responder and stabilised patients was more than 21 months. These results lead us to recommend that, apart from randomised trials, chemotherapy should be stopped after the second course in the absence of at least a stabilisation of the disease, in which prolonged survivals are sometimes observed when treatment is limited to purely symptomatic measures. PMID- 3839593 TI - [Respiratory function and alveolar biological changes under the effect of CDP choline in pulmonary interstitial pathology: pulmonary fibrosis and sarcoidosis]. AB - Various anomalies of pulmonary surfactant have been described in relation to acute respiratory distress syndromes, hypersensitivity lung disease and pulmonary sarcoidosis. Phosphatidylcholine (PC) is the essential phospholipid component of pulmonary surfactant. Cytidine diphosphocholine (CDP-choline) is an essential intermediary in the biosynthesis of PC. The authors studied two groups of patients: one group consisted of diffuse interstitial pulmonary fibrosis and the other consisted of pulmonary sarcoidosis with parenchymal involvement. They observed quantitative and qualitative abnormalities of the phospholipid fractions of surfactant and more particularly of PC. The finding of a marked decrease in this phospholipid, especially in the cases of pulmonary fibrosis, justified the study of the therapeutic effects of CDP-choline. After one month of treatment with this substance, at a dose of 1 g I.M. per day, the PC fraction had returned to normal and, at the same time, there was an improvement in the PaO2 at rest and after exercise. Long term administration of CDP-choline appears to be valuable in the maintenance of the phospholipid equilibrium of pulmonary surfactant and in the improvement of the quality of alveolar gas exchange. PMID- 3839594 TI - Correlation between peptide YY-induced myoelectric activity and transit of small intestinal contents in rats. AB - The effect of peptide YY (PYY) on the myoelectric activity of the small intestine was studied in relation to the transit of a 51Cr marker solution in fasted conscious rats. The myoelectric activity was recorded by means of bipolar electrodes implanted at 5, 20, and 35 cm from the pylorus. The marker was administered in the duodenum immediately after an activity front of a migrating myoelectric complex (MMC) had passed the first recording site. Under control conditions, the propagation of one activity front over the three recording levels was accompanied by the propulsion of 90.2 +/- 11.4% of the total radioactivity as one portion distal to the third electrode site. The median peak of the radioactivity was recovered at a distance approximately twice that propagated by an activity front. Intravenous infusion of PYY (50 pmol X kg-1 X min-1) had no effect on the occurrence of the MMC in the duodenum but interrupted its distal propagation and almost totally abolished the spiking activity in the jejunum. In comparison with controls, the transport of the marker was significantly retarded, and the median peak of the radioactivity was recovered proximal to the third electrode site. The results indicate that the small-intestinal contents are propelled as one portion in front of a propagating activity front. The inhibition of the activity front by PYY may account for the delay in the transit of the small-intestinal contents.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839595 TI - Acceptability of fluoride use in Finnish municipalities. AB - The aim of this study was, firstly, to determine what methods of delivering fluorides might be acceptable to Finnish municipalities and, secondly, to investigate which characteristics of the municipalities best explain the variation in acceptability of fluorides. A sample, composed of 46 Finnish municipalities and representing the communes according to number of inhabitants was drawn and a mail survey sent to decision-makers (n = 1922). In this survey we assessed the characteristics of each commune and its decision-makers and asked how acceptable various methods of fluoride delivery were. The acceptability of the various methods was: toothpaste 95%, gels and varnishes 81%, rinses 63%, salt 48%, piped water 33%, and milk 11%. In industrialized communes these methods of delivery were usually slightly better accepted than in non-industrialized areas. Acceptability of fluorides seemed to differ in the various regions of Finland, Uusimaa region being the most liberal towards use of fluorides. Members of the labour parties seemed to accept piped water containing fluoride and fluoridated milk significantly more often than did conservatives. Among decision-makers, the various methods of delivery were best accepted by dentists, physicians and members of health councils. PMID- 3839596 TI - Transition from B to Z DNA: contribution of internal fluctuations to the configurational entropy difference. AB - The internal motions of the double-stranded DNA oligomer (dCdG)3 (dC, deoxycytidylate; dG, deoxyguanylate) in the B and Z forms have been calculated in the harmonic approximation. A complete vibrational analysis has been made, and the resulting normal mode frequencies have been used to evaluate the vibrational entropy of B and Z DNA. The greater flexibility of the B DNA hexamer leads to an entropic stabilization relative to the stiffer Z DNA hexamer of 22 calories per mole per kelvin at 300 K. The calculated value is of the same order as that (21 to 27 calories per mole per kelvin) obtained from nuclear magnetic resonance measurements on the methylated duplexes (m5dCdG)3 and (dCdGm5dCdGdCdG). This result demonstrates the importance of internal motions, which have been neglected in earlier studies of the transition from B to Z DNA, in the stability of different nucleic acid conformers. PMID- 3839597 TI - A macrophage factor inhibits adipocyte gene expression: an in vitro model of cachexia. AB - Certain infections and malignancies in mammals cause the development of a condition known as cachexia in which the animal continues to lose weight, often while consuming an adequate diet. When macrophages are stimulated with an endotoxin, they produce a factor or factors, termed cachectin, that inhibits the activity of fat-producing (lipogenic) enzymes in cultured adipocytes. This effect may reflect one of the physiological bases for cachexia. In the present study, clones of complementary DNA from genes whose expression is increased during the differentiation of adipocytes were used to study the molecular basis of cachectin's actions. In the presence of cachectin, the expression of the corresponding genes was reversibly and specifically inhibited. Furthermore, when mature adipocytes were exposed to cachectin, the messenger RNA's of those genes diminished and rapidly approached the levels present before differentiation. PMID- 3839599 TI - Seeding of malignant lymphoma along the tract after bone marrow biopsy. AB - A 74-year-old man with non-Hodgkin's lymphoma had seeding of tumor along the needle tract after bone marrow biopsy. This complication was recognized by computerized tomography. PMID- 3839598 TI - Sequence and structure of a human glucose transporter. AB - The amino acid sequence of the glucose transport protein from human HepG2 hepatoma cells was deduced from analysis of a complementary DNA clone. Structural analysis of the purified human erythrocyte glucose transporter by fast atom bombardment mapping and gas phase Edman degradation confirmed the identity of the clone and demonstrated that the HepG2 and erythrocyte transporters are highly homologous and may be identical. The protein lacks a cleavable amino-terminal signal sequence. Analysis of the primary structure suggests the presence of 12 membrane-spanning domains. Several of these may form amphipathic alpha helices and contain abundant hydroxyl and amide side chains that could participate in glucose binding or line a transmembrane pore through which the sugar moves. The amino terminus, carboxyl terminus, and a highly hydrophilic domain in the center of the protein are all predicted to lie on the cytoplasmic face. Messenger RNA species homologous to HepG2 glucose transporter messenger RNA were detected in K562 leukemic cells, HT29 colon adenocarcinoma cells, and human kidney tissue. PMID- 3839600 TI - Sucralfate in the relief of gastrointestinal symptoms associated with nonsteroidal anti-inflammatory drugs. AB - Sucralfate is an unabsorbed antiulcer drug that binds to gastrointestinal tissue and protects it from acid and pepsin. Twenty-two arthritic patients taking nonsteroidal anti-inflammatory drugs (NSAIDs) were given sucralfate concomitantly for two weeks in an attempt to lessen gastrointestinal side effects. Changes from baseline in abdominal discomfort were assessed after 2, 7, 10 (or 11), and 14 days of treatment. Sucralfate administration was accompanied by the disappearance of heartburn, epigastric pain, epigastric distress, or epigastric burning in 42 of 59 occurrences, and by statistically significant reductions in bloating. There was a trend toward significance in decreased nocturnal abdominal pain and in belching. Overall improvement, assessed at the completion of each patient's treatment, also was statistically significant. PMID- 3839601 TI - Prevalence of hepatitis B virus among hospitality girls in Bangkok. PMID- 3839602 TI - Evidence for the existence of genetic variability in the tendency of Anopheles balabacensis to rest in houses and to bite man. AB - Mark-release-recapture experiments were carried out in Sabah, East Malaysia on the malaria and filariasis vector, Anopheles balabacensis. Samples of wild females were marked with different colours of fluorescent pigments, released in man-baited huts fitted with exit traps. Simultaneous collections and releases were also made in night-biting catches on a water buffalo and on four men. All subsequent recaptures were made in the same situation in which the mosquitoes were marked. The same individual mosquitoes were caught biting men and buffalo on different occasions and the numbers caught showed a strong preference for man over buffalo. The length of the oviposition cycle in the field was found to be 3.0 days. After blood-feeding on man in a hut, An. balabacensis were found to exit on the night or early morning. The same individual mosquitoes were found resting in the hut or exit trap on different occasions. The results indicate that there is strong evidence for the existence of genetic variability in the tendency of An. balabacensis to rest in houses and to bite man and buffalo. The obvious existence of this phenomenon is considered discouraging for the prospects of interruption of malaria transmitted by An. balabacensis in nature. PMID- 3839603 TI - [Clinical picture and treatment of recurrent lymphosarcomas after radiotherapy]. AB - The disease course was assayed in 177 patients with a complete remission after radiotherapy. The conclusion is made about high efficacy of repeated treatment after local radiotherapy. In view of the fact that extranodal areas are often involved during relapses, it is not advisable to irradiate the lymph nodes according to the radical program. Relapses that develop during the first year of remission, manifesting in the renewal of the tumor growth and appearance of new tumors, are prognostically unfavourable variants and require intensive care. Local relapses can be exposed to repeated radiation with a good result. PMID- 3839604 TI - Anterior mediastinal mass and Graves' disease. PMID- 3839605 TI - Effects of oral contraceptives and obesity on protein C antigen. AB - In 24 women using oral contraceptives, protein C antigen was higher than in 24 women of the same age and of the same degree of obesity who were not using OC. In the pooled data for all 48 women, there was an increase in protein C of about 1% (of standard) for each 1.0 mm increase in skinfold thickness. Protein C tends to be high rather than low in circumstances predisposing to thrombosis. PMID- 3839606 TI - Defibrination during warfarin therapy in a man with protein C deficiency. AB - A 57 year old man presented with apparently spontaneous lower extremity deep vein thrombosis and pulmonary embolism. He was treated in conventional fashion with intravenous heparin and oral warfarin. After 4 daily doses of warfarin the prothrombin and proconvertin (P+P) time was within therapeutic range, and heparin was stopped. Over the next six hours complete defibrination occurred, associated with severe bleeding complications. Functional protein C measured after normalization of routine coagulation tests averaged 40% of normal, and was only 3.5% of normal immediately prior to the episode of defibrination. We conclude that the very low functional protein C levels seen immediately prior to defibrination were caused by a combination of pre-existent protein C deficiency and warfarin therapy, and directly predisposed to defibrination once heparin was stopped, despite "therapeutic" warfarin anticoagulation. Exacerbation of intravascular coagulation should be considered a potential prothrombotic effect of warfarin therapy in protein C deficient individuals. PMID- 3839607 TI - Protein C activity in renal disease. AB - Protein C activity was determined in 19 healthy controls and in 52 patients with renal diseases, clinically divided into three groups I) Nephrotic syndrome, II) Renal insufficiency, III) Terminal uremia, requiring maintenance dialysis. In the nephrotic syndrome protein C levels were found to be normal, but in renal insufficiency and terminal uremia the protein C activity was significantly decreased. A correlation between decreasing protein C and progressive renal failure is suggested. The reduced protein C activity may play an important role in the thrombotic tendency seen in renal diseases and uremia. PMID- 3839608 TI - Simultaneous demonstration of nonspecific esterase and chloroacetate esterase in human blood cells. AB - A new cytochemical method is described for the simultaneous demonstration of nonspecific esterase in monocytes and chloracetate esterase in granulocytes. The procedure uses both alpha-naphthyl butyrate and naphthol AS-D chloroacetate as substrates and hexazotized pararosaniline as the coupler. The enzyme reaction products are highly chromogenic and their localization is precise. This method is potentially useful for the accurate diagnosis of the acute monocytic leukemias. Its advantages and limitations are also discussed. PMID- 3839609 TI - Renal function in patients with autoimmune diseases treated with cyclosporine. PMID- 3839610 TI - Immunoblastic lymphoma: a clinicopathologic study with emphasis on the cases intervening during or following other disorders. AB - Fifty-eight patients with immunoblastic lymphoma (IBL) were the object of this study. Fifteen of them (26%) developed IBL during or after other diseases, either immunologic or neoplastic, including angio-immunoblastic lymphadenopathy, autoimmune disorders, chronic lymphocytic leukemia, Waldenstrom's disease, lymphoplasmacytoid lymphoma and Hodgkin's disease (subsequent IBL). The comparison between de novo and subsequent IBL revealed a significantly higher incidence of bone marrow involvement and bulky abdominal disease in the latter group, with a lower response rate to chemotherapy. The favorable primary extranodal disease of Waldeyer's ring exclusively belonged to de novo IBL, whereas the frequency of immunoglobulin abnormalities was higher in the subsequent IBL group (67%). The stage of disease, systemic symptoms at diagnosis and response to therapy were predictive of survival. The overall complete remission (CR) rate in the whole series was 37% and the median overall survival 14 months. Complete remitters have a median survival in excess of 60 months; all relapses occurred within the first 12 months of CR. No CNS relapse terminated the CR, and CNS prophylaxis seems unnecessary in IBL. The analysis of subsequent IBL may provide information on the pathogenesis of non-Hodgkin's lymphomas; the still poor prognosis of IBL deserves new therapeutic attempts to improve on the standard regimens. PMID- 3839611 TI - [Esophageal ulcers secondary to doxycycline administration, treated with sucralfate]. PMID- 3839612 TI - [Effect of preparation MP-15 on the productivity and metabolism of lactating cows]. AB - Activation possibilities of redox and biosynthetic processes are studied for lactic cows with their ration supplemented by mineral-ammonium preparation MII 15. In the blood of cows from the experimental group the amount of a number of glycolysis, biocarboxylic cycle, ammonium nitrogen exchange products as well as activity of overamination enzymes vary as compared to control, which testifies to the stimulation of redox processes and protein exchange in tissues. Application of the MII-15 preparation is accompanied by an increase in the lactic productivity of cows by 8-10% on the average. PMID- 3839614 TI - [Correction of the surfactant system of the lungs (review of the literature)]. PMID- 3839613 TI - [Aldolase metabolism in liver mitochondria and plasma of tumor-bearing rats]. PMID- 3839615 TI - [Computer calculation of echocardiographic indices]. AB - The objective of the study was to determine the degree of discrepancy in the data from echocardiographic indices, determined by the original Bulgarian apparatus "Echocomputer" (engineer Daskalov) and by two independently working researchers as well as the accuracy of repetition by one researcher. M-echocardiographic records were used for that purpose of 22 patients with various cardiopathies, the indices determined by the computer were compared with the data of the same indices but obtained by calculations according to the well known classical formulae. Two statistical methods were used--variation and correlation analysis. No statistically significant difference was established between the compared values of Echocomputer and considerable correlation dependence in the comparison of the data from two different ways of calculation of EchoCG-indices. PMID- 3839616 TI - Biochemical oxygen activation as the basis for the physiological action of tetrachlorodecaoxide (TCDO). AB - Oxidation of methionine, 4-(methylthio)-2-oxobutyric acid (KMB), or 1 aminocyclopropane carbonic acid (ACC) are indicator reactions for activated oxygen species such as singlet oxygen (1O2), OH.-radical like oxidants, superoxide anion (O2.-), hydrogen peroxide (H2O2) or activated hemo-iron complexes like peroxidase- or catalase-"compound I". Methionine is oxidized by OH. as well as by 1O2 forming ethylene, but not by tetrachloro-decaoxygen complex (TCDO) in the absence or presence of catalytic hemoproteins such as peroxidase, hemoglobin or myoglobin. Both KMB and ACC are oxidized by TCDO under the catalysis of the above hemo-proteins where neither catalase nor superoxide dismutase are inhibitors. TCDO hemo-protein complex is an oxidant with similar properties as peroxidase-compound I and can clearly be differentiated from O2.-, H2O2, OH. and 1O2. PMID- 3839617 TI - [The behavior of Campylobacter jejuni in various foodstuffs]. AB - For the purpose of ascertaining the survival time of Campylobacter jejuni in foodstuffs under differing conditions, milk, ice-cream, meat salad and drinking water were inoculated with a defined quantity of Campylobacter jejuni and subsequently the number of colony-forming units was determined at first at 12 hour intervals and later once a day. It was found that the survival time in milk at +5 degrees C was 15 days, in drinking water 6 days, but only 7 and 4 days respectively at 22 degrees C. In frozen ice-cream (vanilla) C. j. was still identified after 30 days and longer, in frozen water (-20 degrees C) even after several weeks. In sour meat salad (pH 4.2) the survival time of the inoculated C.j. amounted to a few hours only. The conclusions to be drawn from these results are discussed with reference to the epidemiology of the human diseases caused by C.j. and to kitchen hygiene. PMID- 3839618 TI - Orbital decompression in endocrine exophthalmos of Graves' disease. AB - Transantral decompression was performed bilaterally in 27 and unilaterally in 3 patients with endocrine exophthalmos of Graves' disease. In 28 patients there was an immediate reduction of proptosis and in about half of the patients in addition a marked decrease in chemosis and conjunctival injection indicating that these signs were mostly due to orbital vascular congestion. In one patient with exophthalmos of more than 2 years duration and progressive swelling of the eye muscles no response was observed. In another patient decompression did not reduce proptosis which, however, 4 months later responded to retrobulbar irradiation. In one further patient much more marked reduction of proptosis and disappearance of persistent periorbital swellings were obtained after glucocorticoid treatment given half a year after decompression. Postoperatively diplopia occurred in about half of the patients but corrective operations were required only in a quarter of the patients. Transantral decompression is an effective method for rapid treatment of progressive exophthalmos of Graves' disease. In patients with unilateral exophthalmos the asymmetry may be reversed after unilateral operation. The authors use decompression not only in the most severe cases (categories 5 and 6a-c according to the classification of the American Thyroid Association) but also in less severe cases (categories 2b-c and 3b-c) when there is a steady progression as a primary treatment possibly combined with other forms of therapy. PMID- 3839619 TI - Proteinuria in autoimmune thyroid disease. AB - We have investigated the prevalence of proteinuria in patients with Graves' disease and chronic autoimmune thyroiditis attending a routine thyroid clinic. Using the urine protein creatinine index, proteinuria was found in 29.8% of patients with autoimmune thyroid disease and in 9.5% of patients attending the same clinic but without these conditions. When patients with Graves' disease were treated with 131I, proteinuria measured by 24 h collections developed in 9 of 14 patients without pre-existing proteinuria and appeared to diminish in 4 patients in whom proteinuria had been present before treatment. The prevalence and fluctuation of proteinuria was independent of thyroglobulin and microsomal antibody levels. We were unable to confirm previous reports of a high prevalence of circulating immune complexes in autoimmune thyroid disease; complexes were detected in only 7.9% of patients and did not correlate with proteinuria. The causes of mild proteinuria in autoimmune thyroid disease are not apparent, but previous case reports suggesting that membranous glomerulonephritis is associated with Graves' disease, albeit rarely, indicate that immunological mechanisms may be implicated. PMID- 3839620 TI - Correlation between newborn gastric aspirate microviscosity and gestational age. AB - Fluorescence polarization (FP) values were determined in 59 samples of amniotic fluid and in 56 samples of newborn gastric aspirate, collected from the 28th to 41st week of gestation. Both amniotic fluid and gastric aspirate FP values showed a significant correlation respectively with gestational age (r = 0.77; p less than 0.01 and r = 0.50; p less than 0.01). The two regression lines were parallel (F = 0.052; p = 0.8046). Mean FP of gastric aspirate were about 0.05 lower than those of amniotic fluid. One infant whose gastric aspirate FP value was 0.342 developed RDS. PMID- 3839622 TI - [Studies on the chemical constituents of Rubia schumanniana Pritz]. PMID- 3839621 TI - [Minor constituents of qing dai, a traditional Chinese medicine. I. Isolation, structural determination and synthesis of tryptanthrin and qingdainone]. PMID- 3839624 TI - [Effects of vitamin E deficiency on oxygen induced retinopathy in the rat]. PMID- 3839623 TI - [Retinopathy of prematurity (VI)--Changing the fundus findings of ROP into the quantity evaluation]. PMID- 3839625 TI - Postmenopausal bone density and milk consumption in childhood and adolescence. AB - Skeletal mass is a major determinant of susceptibility to osteoporotic fracture in menopause. At menopause, the skeletal mass is the resultant of the Peak Skeletal Mass (PSM) reached early adulthood minus the bone mass lost through the process of Adult Bone Loss (ABL). Current interventions for the maintenance of skeletal resilience in advanced age address the ABL peri- or postmenopausally. This study indicates that the effects of milk consumption in childhood and adolescence on bone density may manifest as higher bone density decades later in menopause. The assumed mechanism of the reported effect is through augmentation of the PSM, and acquisition of favorable nutritional habits which may influence the extent of ABL. PMID- 3839626 TI - Elevated serum calcitriol concentrations do not fall in response to hyperphosphatemia in familial tumoral calcinosis. AB - Five affected members in two branches of a Druze Arab kindred presented with calcified deposits in or about the hips and knees, indicating the diagnosis of tumoral calcinosis. Serum vitamin D metabolite concentrations, immunoreactive parathyroid hormone, and the tubular reabsorption of phosphate were measured in three affected siblings, as well as in their parents and an unaffected sibling. Normocalcemia and hyperphosphatemia with an elevated tubular maximum for phosphate per glomerular filtration rate were found in the affected patients. Levels of serum immunoreactive parathyroid hormone were normal, and the calcitriol value (1,25-dihydroxyvitamin D) was normal or elevated in the three affected patients. A trial of a low-phosphorus diet and oral aluminum hydroxide gel did not lower serum phosphate levels or improve the calcified deposits. These findings suggest that serum calcitriol values do not decline in response to hyperphosphatemia in tumoral calcinosis and that hyperphosphatemia with elevated tubular reabsorption of phosphate is a constant feature of this disorder because the kidney fails to excrete the increased filtered load of phosphate. PMID- 3839627 TI - Glucocorticoids and beta-adrenergic-receptor agonists: their combined effect on fetal rabbit lung surfactant. AB - In a previous study on pregnant rabbits (Am J Obstet Gynecol 1983; 147:437) we found that a prolonged infusion of the beta 2-adrenergic-receptor agonist terbutaline would first cause a release of fetal pulmonary surfactant, so that more was available in the airways. However, the airway fluid then contained less surfactant, indicating a depletion of stores. Since terbutaline is often used in high doses as a tocolytic agent, surfactant depletion could be a serious side effect. With further studies on rabbits, we wanted to test the hypothesis that with an accelerated surfactant synthesis, achieved with glucocorticoids, the increased release, evoked with the terbutaline, would never cause a depletion of the surfactant stores. Our results supported this hypothesis. Betamethasone, administered to the pregnant doe on the twenty-sixth and twenty-seventh days of gestation, 0.1 mg/kg, increased compliance of the fetal lungs, and more phospholipid phosphorus could be lavaged from the airways. These effects were further increased when, following steroid administration, the doe was infused with terbutaline. Depletion of the surfactant stores was never seen when betamethasone was given prior to the beta-adrenergic-receptor agonist. PMID- 3839628 TI - Intermediate-term changes in intraocular pressure after neodymium-YAG laser posterior capsulotomy. PMID- 3839629 TI - A simple database computer program for ophthalmic use. PMID- 3839630 TI - Brief or new: use of a computer program (PC Coloring Book) in cognitive rehabilitation. AB - PC Coloring Book, a software program for the personal microcomputers, is a helpful treatment modality in cognitive rehabilitation and also for upper extremity motor control refinement. In addition to the case described this program has been initiated with several other patients, including two adults with cerebral palsy who have had additional brain trauma and one 5-year-old who is developmentally delayed. We cannot yet assess the results because these patients have not used the program for a sufficient period of time. However, we have noted that with all patients the increase in motivation was greater with this program than with more conventional treatment modalities. We expect additional patient trials to provide more applications for this program and to support the increased use of personal computers and software for improving cognitive cells. PMID- 3839631 TI - Bioactive ceramics versus proplast implants in ossiculoplasty. AB - During the last decade, the surgical use of alloplasts has become more and more widespread among otologists. Yet, based upon long-term clinical surveys and histologic findings, a debate has recently arisen about the biocompatibility and structural stability of these materials. Outcomes, one to five years postoperatively, are reported here for 188 patients who underwent ossiculoplasty with either Proplast (N = 118) or Ceravital (N = 70) columellas. Ceravital performed 10% better than Proplast with regard to hearing improvement. However, almost 25% of the Ceravital patients did not attain an appreciable auditory gain;even compared with Proplast's 35% figure, this is still too high a figure. The bioactive ceramic yielded an extrusion rate of 8%, whereas 18% of the Proplast prostheses with cartilage interposition were rejected. Causes of failure other than extrusion were detected in a non-negligible number of cases. Actually, columellar ossiculoplasty requires the most realistic expectations and the wisest surgical strategy. Besides the biophysical behavior of the implant, control of the primary disease and the achievement of the best prereconstructive anatomic set-up are critical prerequisites to a fully satisfactory outcome. In this context, staging of the procedure for functional aims seems to play a major role that has perhaps been neglected too often. PMID- 3839632 TI - Technique and indications for the French multichannel cochlear implant "Chorimac 12" for total deafness rehabilitation. AB - To obtain some speech discrimination without lip reading it is necessary to elicit different frequency sound sensations in the totally deaf cochlea. Thus, electrically proofs compartments must be created all along the cochlear keyboard. The placement of twelve intracochlear electrodes is greatly facilitated by using our electrode-bearer, which is introduced through the round window by a posterior tympanotomy approach. However, partial or complete ossification of the cochlea may sometimes necessitate the use of our first technique of placement of electrodes one by one with Silastic pieces through twelve cochlear fenestrations. The indications for implanting depend on certain immutable criteria (total deafness, auditory response to electrical stimulation of the round window, patient's motivation), but other criteria are also described and discussed (socialization level, cochlear ossification, and preoperative electrophysiologic data). Associated handicaps (autism, blindness, tetraplegia) are not contraindications and often represent supplementary reasons for implantation. PMID- 3839633 TI - Our technique of electrode implantation. Experience with forty-six cases of electrode implantation. PMID- 3839634 TI - Pulsed ultraviolet lasers and the potential for safe laser angioplasty. AB - Endoscopic laser ablation of atheroma using continuous wave lasers is limited by imprecise control of thermal ablation, resulting in a crater that expands in width and depth, with thermal damage to adjacent normal tissue. We compared the gross and histologic effects of pulsed 308 mm excimer irradiation to continuous wave Nd:YAG and Argon Ion laser irradiation, and pulsed 1,060 nm, 532 nm, 355 nm, and 266 nm laser irradiation in 205 atherosclerotic aortic segments. In contrast to the continuous-wave Nd: YAG, Argon Ion, and pulsed 1,060 nm, 532 nm, and 355 nm laser irradiation, which produced gross and histologic evidence of uncontrolled ablation, the 308 nm and 266 nm pulsed lasers induced incisions that conformed precisely to the beam configuration without gross evidence of thermal injury. The incision edges from these two lasers were histologically smooth and comparable to a scalpel incision. Our histologic findings suggest that rapid, precise endoscopic ablation of vascular and nonvascular tissue can be performed at these shorter pulsed wavelengths with very high precision with relatively little damage or risk to adjacent tissue. PMID- 3839635 TI - Dantrolene sodium and dystrophia myotonica. PMID- 3839636 TI - Determination of various 15N-enriched spermidines with gas chromatography-mass spectrometry. AB - A novel method for the determination of all eight kinds of variously 15N-enriched spermidines including the natural one is described using gas chromatography-mass spectrometry. After strict assignments of nitrogen(s) in fragment ions split from pentafluoropropionyl derivative of spermidine with 20 eV impact, six fragments (P7 and P10 containing N1 and N4 of spermidine, P8 and P11 containing N4 and N8, and P14 and P15 containing N1, N4, and N8 as designated in the text) were found to be useful for calculating relative contents of the various spermidines. The calculation was carried out by a computer program with the input of 20 relative intensities observed at m/z 259-261, 273-275, 379-381, 393-395, 436-439, and 464 467. Reliability of the method was examined by measuring known mixtures of authentic spermidines. In an experiment testing reproducibility, an average coefficient of variation was 4.8% with a reasonable accuracy for the eight spermidines. Linearity of relative ratios of 15N-enriched spermidines to the natural one was assured with an average correlation coefficient of 0.996. The present method was applied for spermidine synthase reaction, and it was confirmed that the enzyme from rat prostate could not discriminate against 15N of putrescine. PMID- 3839637 TI - Morphine concentration in brain and spinal cord after subarachnoid morphine injection in baboons. AB - Tritium-labeled morphine was injected into the lumbar (L4-5) subarachnoid space of three baboons. The animals were sacrificed 3, 6, and 24 hr thereafter. Morphine concentrations were measured at five predetermined positions within the spinal cord, medulla oblongata, and frontal lobes of the brain by scintillation count assay. The results revealed that morphine ascends in the subarachnoid space and is absorbed into the spinal cord and medulla oblongata in a time-dependent fashion. Ventilation was most depressed and maximal concentrations of morphine were detected in the medulla six hours after injection. Delayed respiratory depression, occasionally reported after intraspinal morphine injection, may therefore be caused as a result of the affinity of morphine for binding sites, possibly opiate receptors, situated within the vital respiratory and cardiovascular neuronal complexes of the medulla. PMID- 3839638 TI - Anesthesia and the Lesch-Nyhan syndrome. PMID- 3839639 TI - CLS 2210, hyaluronidase and the cardiac lymphatic system. AB - Earlier studies have shown that hyaluronidase exerts a potent influence upon the lymphatic system of the myocardium and that it reduces the size of myocardial infarcts after coronary occlusion. In this study we compared, in mongrel dogs, the effect of intravenous hyaluronidase or CLS 2210 upon the cardiac lymphatic vessels. We observed that in CLS 2210-treated animals the number of visualized cardiac lymphatic vessels was significantly higher than in the hyaluronidase treated control group. We have previously demonstrated a cardioprotective effect of hyaluronidase in the treatment of acute myocardial infarction. The present experimental data indicate that intravenous CLS 2210 may have a definite role in the management of acute coronary occlusion. Further studies are needed to confirm these preliminary findings. PMID- 3839640 TI - Efficacy and safety of clorsulon used concurrently with ivermectin for control of Fasciola hepatica in Florida beef cattle. AB - The safety and anthelmintic efficacy of clorsulon (7 mg/kg of body weight, orally) given concurrently with ivermectin (0.2 mg/kg, subcutaneously) for control of Fasciola hepatica were evaluated in 75 crossbred beef cattle. Twenty three control animals were given only ivermectin. Fluke egg counts were significantly lower (P less than 0.0001) in clorsulon-treated animals by day 14 after treatment than before treatment (base line) and were significantly lower (P less than 0.005) after treatment in clorsulon-treated animals than in controls. There was no significant change in fluke egg counts of controls after treatment. The efficacy of clorsulon in reducing F hepatica egg counts was 99%. Clorsulon showed poor efficacy against paramphistomes. Adverse reactions were not observed. PMID- 3839641 TI - Dexamethasone-induced recrudescence of malignant catarrhal fever and associated lymphosarcoma and granulomatous disease in a Formosan sika deer (Cervus nippon taiouanus). AB - Malignant catarrhal fever (MCF) was diagnosed in a 2-week-old Formosan sika deer. The fawn had been previously exposed to a clinically normal neonatal wildebeest calf from which alcelaphine herpesvirus-1 was isolated. Alcelaphine herpesvirus-1 was isolated from buffy coat leukocytes and nasal and ocular secretions of the fawn during the acute illness. The fawn clinically recovered after 3 weeks. Virus was not recovered from blood at this time. Dexamethasone, given 4 months after clinical recovery, resulted in reisolation of MCF virus from blood and recrudescence of clinical MCF. The deer was euthanatized. At necropsy, pathognomonic lesions of MCF, granulomatous disease, and malignant lymphoma were observed. Antibodies to bovine leukosis viral antigens were not detected in the serum. The epidemiologic and pathogenetic importance of the findings are discussed. PMID- 3839642 TI - Cytochrome P-450-catalyzed stereoselective epoxidation at the K region of benz[a]anthracene and benzo[a]pyrene. AB - The enantiomers of K-region benz[a]anthracene (BA) 5,6-epoxide and benzo[a]pyrene (BP) 4,5-epoxide were resolved by chiral stationary-phase high-performance liquid chromatography (CSP-HPLC). The K-region epoxides formed in the metabolism of BA by liver microsomes from untreated (control), phenobarbital (PB)-treated, and 3 methylcholanthrene (MC)-treated male Sprague-Dawley rats were determined by CSP HPLC to have a 5R,6S/5S,6R enantiomer ratio of 25:75, 21:79, and 4:96, respectively. The K-region 4,5-epoxide formed in the metabolism of BP by the same rat liver microsomal preparations contained a 4R,5S/4S,5R enantiomer ratio of 48:52 (control), 40:60 (PB), and 5:95 (MC), respectively. The results indicate that various cytochrome P-450 isozymes of rat liver exhibit different stereoselective properties in catalyzing the epoxidation reactions at the K region of BA and of BP. PMID- 3839643 TI - Rat intestinal peroxidase: inhibition by endogenous xanthine and xanthine oxidase. AB - The high-speed supernatant from homogenates of rat small intestine contains a heat-stable, dialyzable factor which showed a time-dependent inhibition of peroxidase activity in salt extracts of the tissue. The inhibitor was purified by chromatography on Dowex 50W-X8 and identified as xanthine. The inhibition of peroxidase by xanthine was prevented by allopurinol, an inhibitor of xanthine oxidase, and hypoxanthine was also found to be inhibitory. H2O2, produced in the reaction catalyzed by xanthine oxidase, was shown to be directly responsible for the observed inhibition. The time-dependent loss of peroxidase activity in the presence of xanthine or hypoxanthine occurred more rapidly in NH4Cl than in CaCl2 extracts of small intestine and was due to the difference in the initial concentration of H2O2 in these two extracts. The possible relationship between peroxidase and xanthine oxidase in the rat small intestine is discussed. PMID- 3839644 TI - Biological activities and binding properties of 23,23-difluoro-25-hydroxyvitamin D3 and its 1 alpha-hydroxy derivative. AB - 23,23-Difluoro-25-hydroxyvitamin D3 is 5-10 times less active than 25 hydroxyvitamin D3 in stimulating intestinal calcium transport, bone calcium mobilization, increasing serum phosphorus, mineralization of rachitic bone, and binding to the plasma transport protein in rats. It is converted to 23,23 difluoro-1 alpha, 25-dihydroxyvitamin D3 by chick renal 25-hydroxyvitamin D-1 hydroxylase. This compound is one-seventh as active as 1,25-dihydroxyvitamin D3 in binding to the chick intestinal receptor for 1,25-dihydroxyvitamin D3. Thus, fluoro substitution on carbon-23 of vitamin D has an unexpected and unexplained suppressive action on plasma binding and biological activity. However, since this substitution does not block the biological response of 25-hydroxyvitamin D3, these results provide additional evidence that 23-hydroxylation of vitamin D is not involved in biological function. PMID- 3839645 TI - [Cell-killing effect in vitro of prostaglandin derivatives on an established human bladder cancer cell line, KK-47]. AB - The cytotoxic effects of the prostaglandin derivatives, NP01A, NP07A and NP13A (Nihoniyakuhin Kogyo Co., Ltd., Toyama, Japan) on asynchronous cells of an established human bladder cancer cells line, KK-47, have been investigated using an in vitro colony formation technique. The following results obtained: NP01A-and NP13A-treated cells presented survival curves showing an exponential decrease with increasing drug concentrations. NP07A-treated cells demonstrated a survival curve bearing a prominent shoulder at considerably high drug concentrations. Using these survival curves, the 50% and 90% cell growth inhibition concentrations (IC50 and IC90) of the derivatives were computed. NP13A showed the highest cell-killing effect in terms of IC50 or IC90. According to a statistical analysis of variances followed by unpaired t-test, NP07A showed a higher cell killing effect than that of NP01A (P less than 0.01). Based on a therapeutic index obtained from the ratio of clinical dosage to IC90, the derivatives proved to be of value in further in vivo studies. PMID- 3839646 TI - Formula milks for the older infant. PMID- 3839648 TI - Will the real neuroblastoma please stand up? PMID- 3839647 TI - Pharmacological studies of 1-(2,3-dimethyl-4-methoxyphenyl)-2-methyl-3-(1 pyrrolidinyl)-1- propanone hydrochloride (AD-2239), a centrally acting muscle relaxant. AB - Centrally acting muscle relaxant properties of AD-2239 were compared with those of tolperisone, eperisone, diazepam and baclofen. AD-2239 dose-relatedly depressed extensor reflex in urethane-chloralose anesthetized intact and spinal rats, the i.v. potencies being similar to those of tolperisone and eperisone. These effects of AD-2239 were long-lasting. When orally administered, AD-2239 was 4 times more potent than eperisone. Diazepam was without effect on the extensor reflex in spinal rats. AD-2239 depressed the flexor reflex without affecting the patellar reflex in anesthetized cats. Baclofen depressed the latter. When orally administered, AD-2239, in a dose-related manner, depressed the flexor reflex in anesthetized cats, with a potency approximately 8 times that of tolperisone or eperisone. AD-2239 produced a dose-related reduction of anemic decerebrate rigidity (alpha-rigidity) in rats. The potency, at the minimum effective i.v. dose, was 4 times greater than that of tolperisone or eperisone, equal to that of diazepam, and one-half of that of baclofen. AD-2239 neither affected spontaneous electroencephalogram (EEG) nor EEG arousal response in immobilized cats, while the other drugs, at comparatively low doses, depressed them. The results strongly suggest that AD-2239 may have advantages over the existing centrally acting muscle relaxants in the treatment of human clinical spasticity and muscle spasm syndromes. PMID- 3839649 TI - Lymph node examination. What is an adequate workup? AB - Lymph node examination has traditionally been difficult to perform satisfactorily. Both pathologists and clinicians often lack confidence in the resulting diagnosis, and repeated biopsy or routine requests for consultative opinion may follow. Artifactual distortion of lymph nodes during removal and processing are partially responsible for these unsatisfactory circumstances. More recently, a developing awareness of the inherent complexity of lymphoproliferative diseases and the availability of more sophisticated studies have further compounded these traditional problems. This article describes the specific methods recommended to allow community pathologists to scale lymph node examination to the diagnostic difficulty of the disease present. In particular, simple and inexpensive procedures allow tissue samples to be saved for immunologic phenotyping and electron microscopy while routine histopathologic sections are being evaluated. PMID- 3839650 TI - Standardization of the prothrombin time--finally. PMID- 3839651 TI - Pregnancy and lymphoma. PMID- 3839652 TI - Fine-needle aspiration of lymphadenopathy of suspected infectious etiology. AB - We present a protocol for culture of lymph node find-needle aspirations in a series of 44 patients. Clinical indications for inclusion in the protocol included fever, localized erythema, pain or heat, an independent clinical diagnosis of infection by the referring physician, or a grossly purulent appearance of the initial aspirate material. Organisms (fungi, bacteria, or mycobacteria) were isolated in 13 (30%) of the aspirates. The probable contamination rate was 9%. These figures approached the culture yields obtained from open biopsy specimens as reported in the literature. A notable discrepancy existed between the cytologic appearance of the aspirates and culture results in three cases of mycobacteria. Six unsuspected malignancies were diagnosed. There were no complications from the procedure in this series. Based on this study, we present recommendations for culture of fine-needle aspirates from lymph nodes. PMID- 3839653 TI - Effect of urine preservation on urine screening and organism identification. AB - Three urine preservation-transport methods were examined for their effect on rapid urine-screening procedures. Results from fresh urine specimens, screened for bacteriuria by leukocyte esterase, nitrate, Autobac, Bac-T-Screen, Auto Microbic System (AMS), and bioluminescence procedures, were compared with urine screen results from urine specimens held for 24 hours at room temperature in chemical preservatives. Quantitative discrepancies ranged from 0%, for urine preserved with glycerin-boric acid-sodium formate and tested by AMS or leukocyte esterase, to 21% for urines in the same preservative tested by bioluminescence or nitrate. Up to 62% of the organism identifications made from preserved urine specimens tested by the AMS urine card were in error. These data suggest that it may be inadvisable to use weak organic acid-based urine preservation systems in conjunction with these urine-screen procedures. PMID- 3839654 TI - Pathology of surgically excised mitral valves. One hundred consecutive cases. AB - In this study, 100 consecutive, surgically excised, mitral valves were examined pathologically. The valves were classified according to primary conditions that resulted in valvular malfunction. Rheumatic mitral valvular diseases (stenosis and/or insufficiency) accounted for 54% of the cases. Myxomatous changes (prolapse) were present in 32 cases. Fifty-nine percent (19 cases) of those cases with myxomatous changes also had chordal rupture. Four of the cases had papillary muscle rupture, and in seven cases, papillary muscle dysfunction occurred. In one case bacterial endocarditis was observed on a previously normal valve. In one case the pathology of valvular. In one case the pathology of valvular changes was indeterminant. Lupus erythematosus was diagnosed in one patient, and mitral valve insufficiency may have resulted as a complication. PMID- 3839655 TI - Types of aortic stenosis in surgically removed valves. AB - In 109 specimens of aortic valves removed surgically from adults for isolated or dominant aortic stenosis, five types of valve were encountered. In order of decreasing frequency the types were as follows: calcification of congenitally bicuspid aortic valves (48.6%); calcification of a normally tricuspid aortic valve without commissural fusion, the so-called senile type of aortic stenosis (27.6%); calcification of an acquired bicuspid valve (12.8%); the fibrous (rheumatic)-type valve (10.1%); and calcification of congenitally unicuspid valves (0.9%). In the overall study men were more commonly represented than women by a ratio of 3:2. In only the senile type were women more commonly represented than men. PMID- 3839656 TI - Idiopathic arterial calcification of infancy in newborn siblings with unusual light and electron microscopic manifestations. AB - We report two cases of idiopathic arterial calcification of infancy (IACI) occurring in newborn siblings. Unusual gross and light microscopic findings included calcification of multiple nonarterial tissues, renal infarction, and macroscopic aortic involvement. One case manifested an extensive acute panarteritis suggesting that IACI may be the result of an inflammatory or infectious process. Ultrastructural examination confirmed that the mineral deposits were hydroxyapatite and also indicated that they contained iron. Calcified tissue components included smooth-muscle cells, fibroblasts, and collagen fibers, as well as elastic fibers. No matrix vesicles or mitochondrial calcifications that may serve as nucleation sites for crystalline calcium phosphate were identified. Thus, the mechanism of calcification in IACI may be unique, and may relate to altered iron metabolism. PMID- 3839657 TI - New method for quantitating the medial component of pulmonary arteries. Factors affecting the measurements. AB - The study objectives were to determine the effect of several factors related to tissue preparation on the relationship between medial area and size of the muscular pulmonary artery (defined in terms of total length of internal elastic lamina). This relationship took the form y = Axb that was linearized by plotting the square root of medial area against artery size. Complete distention of pulmonary arteries by an injection medium caused the internal elastic lamina to stretch by a factor of approximately 1.5. The relationship between medial area and artery size was unaffected by either the pressure method used for lung inflation/fixation or the tissue-embedding medium. Tissue shrinkage was considerable with paraffin embedding and negligible with glycol methacrylate. More arteries were considered measurable in glycol methacrylate-embedded tissue. PMID- 3839658 TI - Ferruginous body formation on a nonasbestos mineral. AB - Tissue from a lung biopsy specimen was submitted for electron microscopy and x ray energy-dispersive analysis of ferruginous bodies. The presence of these entities had been used as a factor in concluding an asbestos-related tissue response. A 62-year-old man had worked for over 25 years in an iron reclamation and manufacturing facility that had no known sources of asbestos in the work environment. He had no history of recurrent respiratory problems. Combined studies in tissue sections as well as on digested specimens revealed that the core of a majority of the ferruginous bodies was an iron-rich fiber. The source of the fibers was traced to a material used in packing and insulation of the metal during the tempering process. While there is a widespread regional potential for exposure in both environmental and occupational settings, the question as to whether the dust is actually a health hazard or more of a nuisance pollutant remains unanswered. It is evident, however, that the fibrous mineral should be recognized as a stimulus for ferruginous body formation in humans. PMID- 3839659 TI - Abdominal Hodgkin's disease in a child. AB - We describe a girl with Hodgkin's disease limited to the abdomen. She had severe hypochromic, microcytic anemia with increased iron deposition in the liver. Abdominal Hodgkin's disease should be considered in the differential diagnosis of a child with hypochromic anemia, systemic symptoms, and lack of peripheral adenopathy. PMID- 3839660 TI - Myeloma cells in the urine. AB - We report two unusual manifestations of multiple myeloma in a 71-year-old man. Late in the course of his disease, myeloma cells were observed in the patient's urinary sediment. At post mortem, the source of the cells was found to be a plasmacytoma of the urinary bladder. To our knowledge, this appears to be the first report of a clearly demonstrable anatomic source for myeloma cells in the urine. PMID- 3839661 TI - Disseminated Curvularia infection. AB - Curvularia is a saprophyte that rarely causes infection, and then usually occurs in immunocompromised patients. A 41-year-old man, previously in good health, developed pulmonary and cerebral infection with Curvularia lunata. With surgery and amphotericin B therapy, he recovered and was free of infection one year later. PMID- 3839662 TI - Coronary artery aneurysms presenting as sudden death 14 years after Kawasaki disease in infancy. AB - A 17-year-old boy who collapsed and died suddenly was found to have aneurysms of the right and left coronary arteries and evidence of a burned-out arteritis. There was a history, in infancy, of a severe febrile illness and skin rash that, in retrospect, was an acute episode of Kawasaki disease (mucocutaneous lymph node syndrome). The observations support the contention that a previous episode of Kawasaki disease should be entertained as a possible cause of proximal, discrete coronary artery aneurysms presenting in adolescence or adulthood. PMID- 3839663 TI - Pulmonary peliosis. AB - Peliosis hepatis is an uncommon vascular lesion of unknown etiology, and its occurrence has been linked frequently to therapy with androgenic-anabolic steroids. Extrahepatic peliosis is ever rarer. It is found most commonly in the spleen and usually in conjunction with peliosis hepatis. Documented here is an unusual case of pulmonary peliosis, associated with peliosis hepatis and peliosis of the spleen, in a 40-year-old man who had Fanconi's anemia and who received long-term therapy with fluoxymesterone and methyltestosterone. To our knowledge, this represents only the second reported case of pulmonary peliosis in the English literature. PMID- 3839664 TI - Graves' ophthalmopathy. PMID- 3839665 TI - Static threshold examination of the peripheral nasal visual field in glaucoma. AB - Quantitative computerized threshold perimetry (OCTOPUS) was used to study the peripheral nasal field in patients with glaucoma and patients suspected to have glaucoma. Peripheral nasal defects (detected with a specially designed program) were found in the absence of abnormalities in the central field (as measured by OCTOPUS Program 31 or 32) in approximately 11% of all eyes being evaluated for glaucoma. Examination of the peripheral nasal field by sensitive quantitative threshold perimetry should be included in the careful evaluation of patients with glaucoma and those suspected to have glaucoma. This procedure not only will allow identification of early defects but also will allow careful follow-up of quantified abnormalities over time. PMID- 3839666 TI - Vitreolysis with the Q-switched laser. AB - We present an overview concerning the current status of photodisruptive methods used in the treatment of pathologic changes in the vitreous space. In one series of 320 cases studied, 65% of the planned dissections of pathologic structures were successful. In a second series of 34 more complicated cases, the success rate was even lower. Complications included 15 retinochoroidal hemorrhages and one damaged posterior lens capsule. When one compares optical-surgical methods with conventional methods, it is obvious that the former aim at achieving goals that are less ambitious than those of classic vitrectomy and, in many cases, serve only to prepare for - and facilitate - a classic vitrectomy. By definition, laser vitreolysis dissects, but cannot remove, the fragments of disrupted structures from the eyeball. However, despite the obvious risks, photodisruptive laser surgery is considered less dangerous than is classic vitrectomy because photodisruption is a "noninvasive" procedure. Since laser vitreolysis is able to solve a number of clinical problems, obviating the need for vitrectomy, the former procedure should receive increasing attention for the treatment of pathologic problems in the vitreous cavity. PMID- 3839667 TI - [Analysis of the reasons for repeat arthrotomy of the knee joint]. PMID- 3839668 TI - Carbachol stimulation of phosphatidic acid synthesis: competitive inhibition by pirenzepine in synaptosomes from rat cerebral cortex. AB - Carbachol stimulated phosphatidic acid synthesis in cholinergically enriched synaptosomes from rat cerebral cortex. Increasing concentrations of pirenzepine (10-1000 nM) produced parallel concentration-response curves to carbachol which were shifted to the right. A pA2 value for pirenzepine of 8.4 +/- 0.3 was obtained from Schild analysis. We hypothesize that high affinity pirenzepine binding to M1 receptors is coupled to phosphatidic acid synthesis in the rat cerebral cortex. PMID- 3839669 TI - Determination of ethanol partition coefficients to the interior and the surface of dipalmityl-phosphatidylcholine liposomes using deuterium nuclear magnetic resonance spectroscopy. AB - The binding of ethanol-d6 to dipalmityl-phosphatidylcholine liposomes (DPPC) can be separated into two processes, namely, ethanol in the bilayer and on the surface of the bilayer. For the deuterons of the methylene group, the T2 of both bound states is shorter than the respective preexchange lifetime (tau beta) and therefore the amount of ethanol bound to both sites can be determined from the decrease in the methylene intensity resonance in the presence of DPPC. For the methyl resonance, however, only the T2 of deuterons on ethanol bound to the surface is less than its tau beta and the amount of surface bound ethanol-d6 can be determined. Subtraction yields the amount of ethanol bound within the bilayer. The partition coefficient for internally bound ethanol remains constant from 0 to 3.5 m ethanol. Surface binding is, however, highly cooperative. PMID- 3839670 TI - Autoantibody to vasoactive intestinal peptide in human circulation. AB - In a radioassay for Vasoactive Intestinal Peptide (VIP)-binding, eight out of 33 plasma samples from healthy human subjects exhibited specific binding ranging from 2.6% to 46.7% of total [125 I]VIP. This binding was competitively displaced by unlabeled VIP. The structurally homologous peptides, Peptide Histidine Isoleucine (PHI) and secretin, were, respectively, 72-fold and 413-fold less potent than VIP in displacing bound [125 I]VIP, whereas the unrelated peptides, neurotensin, eledoisin, bombesin and metenkephalin, were without effect on the binding. The antibody nature of the VIP-binding factor was suggested by its precipitation with ammonium sulfate, attenuation after absorption with Staphylococcus aureus preparations, precipitation with antisera against human IgG and IgM, and coelution with standard IgG and IgM on anion-exchange and high performance gel-filtration columns. Pepsin treatment of purified IgG fraction yielded a VIP-binding species with apparent molecular weight of 108 +/- 13 kDa that was precipitated by antiserum against the F(ab)2 fragment of the IgG molecule. These results demonstrate the existence in some human plasmas of an autoantibody that binds VIP. PMID- 3839671 TI - Pyridine and imidazole reversibly inhibit the respiratory burst in porcine and human neutrophils: evidence for the involvement of cytochrome b558 in the reaction. AB - Heterocyclic nitrogenous bases, such as pyridine and imidazole which bind to heme iron in cytochromes, inhibited the respiratory burst in intact neutrophils and NADPH-dependent oxygen consumption in lysed cells. Inhibition was accompanied by a spectral change in reduced cytochrome b558 as judged by low-temperature spectroscopy at 77 K. The position and shape of the alpha-band of the cytochrome were significantly altered upon exposure to pyridine or some other bases. Both inhibition and spectral changes were reversible. The results are consistent with the view that cytochrome b558 is involved in the NADPH oxidase system in neutrophils. PMID- 3839672 TI - Lectin activity of gluten identified as wheat germ agglutinin. AB - A lectin in gluten was detected by agglutination of papain-treated human erythrocytes. A partially purified lectin preparation was obtained by chromatography on immobilized ovalbumin. This fraction showed the same sugar specificity as wheat germ agglutinin (WGA). There was no indication of lectins with carbohydrate specificities different from WGA in the various gluten fractions examined. Small amounts of the gluten lectin was then isolated by using an affinity column with specificity for WGA. Analyses of this gluten lectin by sodium dodecyl sulphate-gel electrophoresis showed bands with the same mobility as that of purified WGA. Our results indicate that the lectin properties of gluten are due to traces of WGA. This finding is relevant for theories about the pathogenesis of coeliac disease. PMID- 3839673 TI - Ribonuclease activity associated with the 60S ribosome-inactivating proteins ricin A, phytolaccin and Shiga toxin. AB - All purified preparations of the ribosome-inactivating proteins ricin A, phytolaccin and Shiga toxin were shown to exhibit ribonuclease activity with 5S or 5.8S rRNA substrates. These toxin species generated reproducible patterns of RNA fragments distinct for each toxin species while multiple preparations of a single toxin species yielded similar RNA fragment patterns. The heat inactivation profile of Shiga toxin was identical for its RNase and protein synthesis inhibitory activities. These data are the first to indicate that the ribosome inactivating catalytic toxins, in addition to alpha-sarcin, exhibit RNase activity. These results suggest RNase activity may be responsible for ribosome inactivation catalyzed by ricin, phytolaccin and Shiga toxin proteins. PMID- 3839675 TI - Radioimmunoassay for beta-endorphin (1-18), a novel pituitary peptide derived from proopiomelanocortin. AB - A specific radioimmunoassay was developed for beta-endorphin (1-18). The content of beta-endorphin (1-18) immunoreactivity in rat tissues was as follows: posterior pituitary 260 ng/fragment, anterior pituitary 1.46 ng/mg, hypothalamus 11.9 pg/mg. The levels were undetectable (less than 3 pg/mg) in extrahypothalamic brain, pancreas, small intestine, prostata and testis. Gel filtration and reverse phase HPLC studies indicated that most of rat anterior pituitary immunoreactivity is due to native beta-endorphin (1-18), whereas the bulk of posterior pituitary immunoreactivity corresponds to more hydrophobic material, probably N-acetyl-beta endorphin (1-18). Thus, beta-endorphin (1-18) is a quantitatively important novel pituitary peptide derived from proopiomelanocortin. The posterior pituitary is an especially rich source of (N-acetyl)-beta-endorphin (1-18). PMID- 3839674 TI - Neuromedin U-8 and U-25: novel uterus stimulating and hypertensive peptides identified in porcine spinal cord. AB - Two novel peptides eliciting a potent stimulant effect on the rat uterus smooth muscle have been purified and identified in porcine spinal cord. These peptides were designated as neuromedin U-8 (8 amino acids long) and U-25 (25 amino acids long) referring to their uterus stimulating activity. Sequence analyses and syntheses revealed that neuromedin U-8 is a novel octapeptide with a C-terminal amide structure, while U-25 contains the U-8 sequence at its C-terminus, preceded by paired Arg residues, implicating their biosynthetic relationship. Their potent uterus stimulating activity and hypertensive effect, as well as their unique C terminal amide structure are indicative of their specialized physiological function. PMID- 3839676 TI - Association of folate molecules as determined by proton NMR: implications on enzyme binding. AB - The self-association in aqueous solution of folic acid (FA), 7,8-dihydrofolic acid (DHFA) and 5,6,7,8-tetrahydrofolic acid (THFA) has been studied by the use of proton magnetic resonance (1H NMR) spectroscopy. At concentrations below 10 mM, all three folates exist in (monomer)2 in equilibrium dimer equilibria with association constants (Ka) equal to 400, 66 and 14 M-1 for FA, DHFA and THFA respectively. These values decreased markedly to 157, 18 and 3 M-1, for FA, DHFA and THFA respectively, in the presence of 0.8 M KCl. The high extent of dimerization of FA is believed to impede the interaction with the active site of dihydrofolate reductase (DHFR) rendering it a poor substrate. In contrast, the DHFA with a much lower Ka is a better substrate. Conditions that lower the Ka of both FA and DHFA, (i.e., 0.8M KCl) turn them into better substrates. Based on the findings of the present study, it is also predicted that dihydro MTX may be a better inhibitor of DHFR than MTX. PMID- 3839677 TI - Major gangliosides in normal and pathological human thyroids. AB - The major gangliosides of human thyroids were extracted, purified and then analyzed by gas-liquid chromatography. In normal thyroid, GM3 and GD3 represented about 80% of lipid-bound sialic acid. GM3 contained more than 50% of long-chain fatty acids, whereas GD3 contained mostly short ones. 4D hydroxy sphinganine represented 20% of long-chain base content in both cases. In pathological thyroids (Graves' disease, cancer, toxic adenoma), GM3 represented about 60% of lipid-bound sialic acid; its fatty acid content was mostly short chain fatty acids, as in normal GD3. 4D hydroxy sphinganine proportion was decreased. PMID- 3839678 TI - Ultrastructural development of hyperosteoidosis in 1,25(OH)2D3-treated rats fed high levels of dietary calcium. AB - To evaluate the sequential ultrastructural pathogenesis of the increase in osseous tissue and hyperosteoidosis previously demonstrated in rats administered supraphysiologic doses of 1,25(OH)2D3 and fed high levels of dietary calcium, young adult female rats were placed on a 2.5% calcium and 0.3% phosphorus diet, administered ethanol or 135 ng (5 units) 1,25(OH)2D3 IP daily, and killed after 2, 4, 6, 8, and 10 days. Metaphyseal trabeculae from 1,25(OH)2D3 and placebo treated rats were examined. Osteoblast hypertrophy characterized by increased cytoplasmic area, abundant rough endoplasmic reticulum, and prominent Golgi apparatus was evident in 1,25(OH)2D3-treated rats at Day 4. These osteoblasts were interpreted to be active in matrix synthesis. Widened osteoid seams were present at Day 6. Osteoblast hypertrophy and widened osteoid seams persisted through Day 10 in 1,25(OH)2D3-treated rats. The unmineralized bone matrix in 1,25(OH)2D3-treated rats contained more numerous cytoplasmic processes from adjacent osteoblasts than did control animals and loosely arranged collagen fibrils, which failed to aggregate in regions adjacent to the osteoid-mineralized bone interface as in placebo-treated rats. Osteoid seams in 1,25(OH)2D3-treated rats contained irregular electron-dense foci, which were often concentrated around embedded cytoplasmic processes. Osteocytic hypertrophy characterized by increased cytoplasmic area, developed rough endoplasmic reticulum, and increased numbers of mitochondria was evident at Day 2 and was sustained through Day 10 in 1,25(OH)2D3-treated rats. Variable-sized aggregates of electron-dense deposits similar to those concentrated around osteoblast cytoplasmic processes were observed in the pericellular space and on and immediately adjacent to the plasma membranes of osteocytes and embedding osteoblasts in 1,25(OH)2D3-treated rats as early as Day 4.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839679 TI - A placebo controlled comparison of the effects of pirenzepine and amitriptyline on the tyramine pressor test in healthy volunteers. AB - The possibility of an interaction between pirenzepine, an antimuscarinic drug structurally similar to the tricyclic antidepressants, and sympathomimetic agents was investigated in a group of healthy volunteers. The effect of pirenzepine on response to intravenous tyramine was compared with that of placebo and amitriptyline. The mean dose of tyramine required to elevate systolic blood pressure by 30 mm Hg was 5.0 mg (+/- s.d. 0.8) after placebo, 5.1 mg (+/- 1.0) after pirenzepine and 11.3 mg (+/- 1.8) after amitriptyline. These results suggest that pirenzepine will not potentiate the effects of concurrently administered sympathomimetic drugs. PMID- 3839680 TI - Resonance Raman studies of the flavin and iron-sulfur centers of milk xanthine oxidase. AB - Resonance Raman spectroscopy has been used to study milk xanthine oxidase, an enzyme containing molybdenum, binuclear iron-sulfur clusters, and FAD as cofactors. The contribution of FAD dominates the resonance Raman spectrum at frequencies above 500 cm-1. As expected, no bands assignable to FAD are observed in deflavo xanthine oxidase. The resonance Raman spectrum below 500 cm-1 reveals the contribution of the Fe2S2(Cys)4 groups with frequencies similar to those of adrenodoxin and putidaredoxin. Resonance enhancement profiles of the Fe2S2(Cys)4 clusters indicate intensity variations among the Fe2S2(Cys)4 peaks that are attributed to different excitation wavelength maxima of their bridging and terminal iron-sulfur vibrations. No evidence for Mo-ligand vibrations could be obtained by using excitation wavelengths between 363.8 and 514.5 nm. PMID- 3839681 TI - Phospholipids chiral at phosphorus. Use of chiral thiophosphatidylcholine to study the metal-binding properties of bee venom phospholipase A2. AB - It has been shown recently by 31P nuclear magnetic resonance (NMR) that phospholipase A2 (PL A2) from bee venom shows a high degree of stereoselectivity toward the "isomer B" of 1,2-dipalmitoyl-sn-glycero-3-thiophosphocholine (DPPsC) [Bruzik, K., Jiang, R.-T., & Tsai, M.-D. (1983) Biochemistry 22, 2478-2486]. We now report a quantitative kinetic study of PL A2 using 1,2-dipalmitoyl-sn-glycero 3-phosphocholine (DPPC) and (RP)-, (SP)-, and (RP + SP)-DPPsC by a spectrophotometric assay. The substrates were mixed with Triton X-100 to form mixed micelles, and steady-state kinetic theories were applied. The enzyme was activated by Ca2+, which induced a conformational change of the enzyme, as shown by UV difference spectra. The apparent dissociation constant of Ca2+/PL A2 is 2.5 mM. In the presence of Ca2+, large substrate specificity and stereospecificity in Vmax (in mumol min-1 mg-1) were observed: DPPC, 1850; (RP)-DPPsC, 7.6; (RP + SP) DPPsC, 64; (SP)-DPPsC, 0.044. On the other hand, relatively small variation in Km was observed, which suggests that the interfacial interaction is relatively nonspecific among the substrates studied. (SP)-DPPsC and Cd2+ were shown as competitive inhibitors for the hydrolysis of DPPC by Ca2+/PL A2. Binding of Cd2+ with apo-PL A2 was also demonstrated by UV difference spectra, with a dissociation constant of 0.59 mM. Activation of apo-PL A2 by Cd2+ was unequivocally demonstrated for (SP)-DPPsC by use of 31P NMR. The Vmax values of Cd2+/PL A2 were DPPC/(RP)-DPPsC/(SP)-DPPsC = 17.6/0.069/0.0044 mumol min-1 mg 1.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839683 TI - Stopped-flow rapid kinetics of anesthetic-induced phase transition in phospholipid vesicle membranes: nonlocalized fluctuation. AB - Kinetics of the gel to liquid-crystalline phase transition of dipalmitoylphosphatidylcholine vesicle membrane was studied by the stopped-flow technique with turbidity detection. The observed change in turbidity was well characterized by a single-exponential decay curve with relaxation time in the millisecond range, although the existence of a faster process than the dead-time of the stopped-flow apparatus was inferred from the amplitude analysis. Relaxation times were determined as functions of 1-hexanol concentration and temperature just below phase transition. From the analysis based on the theories of nonequilibrium relaxation, it is concluded that the phase transition induced by 1-hexanol is governed by a nonlocalized fluctuation mechanism. The anesthetic induced nonequilibrium state is unstable rather than metastable. PMID- 3839682 TI - Rates of hydration of fatty acids bound to unilamellar vesicles of phosphatidylcholine or to albumin. AB - The rates of hydration of naturally occurring fatty acids bound to unilamellar vesicles of dimyristoylphosphatidylcholine were measured by following the rate of quenching of the inherent fluorescence of albumin. Rates of hydration of fatty acids bound to albumin could be estimated from the same data. The data show that these rates depend on the chain length and unsaturation of the fatty acid. Increasing chain length diminishes the rate of hydration whereas increasing unsaturation increases this rate. Rates of hydration of fatty acids bound to lipid vesicles appear to be rapid enough to account for intracellular movement between compartments in the absence of carrier proteins. It is uncertain whether this is true for hydration of fatty acids bound to albumin. Rates for this process are about 100-300 times slower vs. rates of hydration of fatty acids bound to lipid vesicles. PMID- 3839684 TI - Occurrence of glyceryl ethers in the phosphatidylcholine fraction of surfactant from dog lungs. AB - The molecular species of ether-linked lipids in the phosphatidylcholine (PC) fraction of the pulmonary surfactant obtained from the lavage fluid of dog were characterized. A combination of base-catalyzed methanolysis, phospholipase C treatment, gas-liquid chromatography, and mass spectrometry procedures were applied. The phospholipid composition of the surfactant, obtained by phosphorus assay of lipids separated by silica gel G thin-layer chromatography (TLC), was: PC (75%), phosphatidylglycerol (10%), phosphatidylethanolamine (7%), plus small amounts of sphingomyelin, phosphatidylinositol, and phosphatidylserine. The major components of the PC were 1,2-diacylPC (95%), and 1-O-alkyl-2-acylPC (5%). No detectable amounts of 1-O-alkyl-1'-enyl-2-acylPC or di-alkyl-1-enylPC were observed. The acyl groups present in the diacylPC were 14:0 (5%), 16:0 (68%), 16:1 (12%), 18:0 (6%), 18:1 (7%) and 18:2 (2%). The predominant alkyl ether chains located at the carbon 1 position of the 1-O-alkyl-2-acylPC were 16:0 (84%), 18:0 (5%) and 18:1 (14%). At the carbon 2 position only a 16:0 fatty acyl residue was detected. In three out of seven animals platelet-activating factor like activity, as determined by a platelet aggregation assay, was isolated by TLC. This aggregating activity was lost upon base-catalyzed methanolysis, but was restored by functional levels after acetylation. PMID- 3839685 TI - Catabolism of rat surfactant disaturated phosphatidylcholines during incubation of alveolar lavage materials in vitro at 37 degrees C. AB - Incubation of rat alveolar lavage materials in vitro at 37 degrees C results in degradation of the endogenous surfactant disaturated phosphatidylcholines (disaturated PC). When exogenous dipalmitoylphosphatidylcholine (DPPC) vesicles are incubated with lavage materials, there is catabolism of the DPPC. The degradation process is temperature- and Ca2+-dependent and has a pH optimum of 6.5-7.0. The products formed during catabolism of [3H]palmitate- and [14C]choline labeled disaturated PC are free palmitate and water-soluble choline products. No lysophosphatidylcholines are formed. Measurements of lactate dehydrogenase levels in lavage fluid, use of more gentle lavage techniques, use of Ca2+, Mg2+ and protein in the lavage medium, and measurements of bacterial contamination all suggest that enzymes are neither released into pulmonary lavage fluid via cellular damage nor are bacterial in origin. Degradation of surfactant disaturated PC does not occur during incubation of lavage materials from rabbits, mice or guinea pigs. These results suggest that phospholipases and/or lysophospholipases are present in rat alveolar lavage materials. Possible origins of these enzymes are discussed. PMID- 3839687 TI - Informatics applied to molecular biology. PMID- 3839686 TI - Monoclonal antibodies against human pulmonary surfactant apoproteins: specificity and application in immunoassay. AB - Monoclonal antibodies were prepared against pulmonary surfactant apoproteins which were isolated from lung lavages of patients with alveolar proteinosis with the following steps: solubilization of the surface-active fraction by Triton X 100, delipidation with butanol-ethanol extraction followed by column chromatographies on Blue-Sepharose and DEAE-Toyopearl in the presence of dithiothreitol. The fraction including 62 and 36 kDa proteins, i.e., pulmonary surfactant apoproteins, was used for the immunization. Monoclonal antibodies against the pulmonary surfactant apoproteins were prepared using hybridoma technology. The monoclonal antibodies prepared, PC6 and PE10, recognized the same proteins, i.e., 62 and 36 kDa proteins, in the patients' lavages. They also recognized 37 and 34 kDa proteins in human lung lavage and amniotic fluid. Quantitation of the apoproteins by enzyme-immunoassay using the monoclonal antibodies has been developed. A combination of PC6 and PE10 was found to be useful for a two-site sandwich enzyme-linked immunosorbent assay (ELISA), where it gave a good dose response and was capable of measuring 10-1280 ng of the apoprotein/ml. The specificity of the monoclonal antibodies in animal species was tested by this sandwich ELISA. The results indicated that the monoclonal antibodies obtained in this study are specific for the human lung. PMID- 3839688 TI - A user-friendly biological workstation. AB - Learning methods developed by artificial intelligence research teams are very efficient for biological sequences analysis but they need running on large computers accessed by terminals. These computers are interfaced with standard displays involving long and unpleasant alphanumerical data handling. The "biological work station" is a personal computer with a color graphic screen providing a user-friendly interface for the artificial intelligence learning programs running on large computers. It provides to biologist a graphical convenient tool for sequence analysis built with efficient man-machine communication methods such as multiwindows, icons and mouse selection. It allows the biologist to edit and display sequences in an efficient and natural way, showing off directly on color pictures the data and the results of learning programs. PMID- 3839689 TI - Graphical coding of nucleic acid sequences. AB - When, in a nucleic acid sequence, the four letters C, G, A, T (or U) are replaced by suitable graphical symbols, some patterns become immediately apparent. Two sets of symbols, constructed for the analysis of either purine/pyrimidine alternations, or of regions of complementarity within a sequence are shown. In addition, another mode of coding is presented, in which the four letters are represented by vectors. The sequence is thus transformed into a planar trajectory. We show, in the case of the gene for human beta hemoglobin, that such a coding enables an easy discrimination between introns and exons. PMID- 3839690 TI - OURCIN: a tool to build expert systems. AB - OURCIN is a tool to build expert systems, which was developed by a joint team from INRIA and SEMA. We emphasized developing on this system the ergonomic features which make Expert Systems a comfortable and interesting approach for knowledge engineering. PMID- 3839691 TI - Statistico-syntactic learning techniques. AB - The methods of "learning from examples" enable the solving of problems of classification: discrimination between two classes of objects, assimilation of an object to a class of objects representing a property. They are used in a situation where we don't know a priori a procedure in order to decide, but we have examples (in sufficient amount). After a learning stage with the examples, a procedure to solve the problem is built. In the exposed methodology the description of an object is a list of attributes, the acquired knowledge is sets of "rules" considered as arguments in favour of a particular decision. PMID- 3839692 TI - [Structural descriptions. Discrimination and learning of these descriptions]. AB - In order for the computer to learn about objects, the user must first provide a good description language for these objects. In this paper we present a new description language which is structural. Structural descriptions portray objects as composite structures consisting of various components. Structural descriptions can be contrasted with attribute descriptions, which specify only global properties of an object. Attribute descriptions can be expressed using propositional logic. Structural descriptions, however, must be expressed in first order logic. We present how this language works, why it is suitable for biochemical objects and how one can discriminate on structural descriptions. Finally, we present an application on learning about tRNA which has yielded very good results brings evident of feasibility. PMID- 3839693 TI - Sequence representation. AB - This article deals with the definition of a method for analyzing sequences of symbols, especially biological sequences. We are mostly interested in finding representations of sequences, that could help to explicit relationship between their structure and their activity. Starting with automatically built rules, governing occurrences of symbols within sequences, we define ways of using these rules to determine different subsequences that we assume to be contexts. Labelled contexts provide a possible representation of sequences. Finally an example of detected contexts in proteins is given. PMID- 3839694 TI - [Prediction of secondary structures of nucleic acids: algorithmic and physical aspects]. AB - Prediction of secondary structures in nucleic acids requires both an adequate physical model and powerful calculation algorithms. In our approach, we cut the molecules in sections of which the contributions to the global energy are context dependent but roughly additive. The structure of minimum energy is obtained by a tree search under constraints of binary incompatibilities. Our algorithm of the "incompatibility islets" is shown to be more powerful than the "bit parallel forward checking" algorithm, well known in Artificial Intelligence. Recurrent algorithms, proposed by other authors are even more rapid, but often miss the correct structures, for they demand a strict additivity of the energetic contributions, physically unjustified. New strategies, required to deal with molecules of more than 200 nucleotides are discussed. Our physical model has been improved by considering the special case of internal loops beginning with a G-A opposition. A bonus of 1.5 kcal. is attributed to such a feature, at each side of an internal loop. To illustrate our programs, we give the computed schemes for the 3' termini of the small subunit ribosomal RNA. PMID- 3839695 TI - Application of learning techniques to splicing site recognition. AB - Most genes of eukaryotic genomes are disrupted by introns. The application of a learning technique which uses both statistic and syntactic analysis lead to the establishment of logical rules enabling the recognition of intron/exon junctions between uncoding and coding sequences. The rules were tested on rat actin gene sequences containing some or all of the introns and 50 exon nucleotides on either side of the intron. The results show good recognition of the excision site. This recognition is more ambiguous when the sequence is short; for the acceptor sequence it presents a good selection. The learning achieved with both the donor and acceptor sequence does not lead to recognition. This result indicates that it is not the relationship between donor and acceptor sites in the same intron which determines sequence selection or the splicing mechanism. PMID- 3839696 TI - Computer search of calcium binding sites in a gene data bank: use of learning techniques to build an expert system. AB - Using a learning set of 28 sequences able to bind calcium (each sequence is 12 residues long), we have built two filters by learning on this set. The first filter uses a pattern-matching technique and the second one takes into account the environment of amino-acids. These two filters have been used to find new calcium-binding proteins in a data bank. The results are discussed. PMID- 3839697 TI - [Diaphorase reactions of lipoamide dehydrogenases from the adrenal ketoglutarate dehydrogenase complex]. AB - Lipoamide dehydrogenase, a component of the bovine adrenal ketoglutarate dehydrogenase complex, catalyzes the oxidation of NADH by p-quinones and ferricyanide. The kinetics of oxidation obey the ping-pong mechanism. At pH 7.0, the constants for the active center oxidation by quinones (kox) are equal to 1.1 X 10(4)-5.3 X 10(5) M-1s-1 and increase as the acceptor potential rises. The values of kox for quinones change insignificantly within the pH range of 7.7-5.0, whereas that for ferricyanide increases 10-fold with a decrease of pH from 7.0 to 5.0. The value of the catalytic constant for the enzyme (kcat) reaches its maximum at pH 5.5. The quinones interact with the thiol groups of lipoamide dehydrogenase by inhibiting the fluorescence of FAD and diaphorease activity. The reaction is catalyzed by a basic amino acid (pK 6.7) within the composition of the enzyme. PMID- 3839698 TI - Characterization of adenosine-induced respiratory depression in the preterm rabbit. AB - The respiratory performance was studied after intraperitoneal administration of the adenosine agonists N6-phenyl-isopropyl-adenosine (PIA) and adenosine-5 ethylcarboxamide to preterm (gestational age 29-30 days) newborn halothane anesthetized rabbits. Both agonists induced marked hypoventilation and irregular breathing by decreases in the breathing frequency as well as the tidal volume. Expiratory time was markedly prolonged, resulting in a decrease in the respiratory duty cycle (inspiratory time/total cycle duration). Analysis using the occluded-breath technique revealed that the adenosine analogues altered the time setting of the expiratory (inspiratory) neuronal circuits and lowered the inspiratory off-switch level, while inspiratory drive and the bulbopontine setting of the inspiratory phase were unaltered. The ventilatory response to CO2 was blunted after both adenosine analogues studied. Theophylline almost completely reversed the hypoventilation and irregular breathing seen after PIA injection. It is concluded that activation of central nervous adenosine receptors induced a marked respiratory depression in the preterm rabbit. Furthermore, our data imply that an overactivity of central adenosine mechanisms may have a pathophysiological significance for the irregular breathing or apnea of prematurity sometimes seen in the human neonate. PMID- 3839699 TI - Histochemical demonstration of ornithine transcarbamylase activity in fetal liver. AB - A histochemical technique for demonstrating ornithine transcarbamylase (OTC) activity in human and rhesus monkey fetal liver is described. The proportion of OTC-positive cells increases in fetal monkey liver between 130 and 150 days of gestation. The histochemical assay can be used to verify the prenatal diagnosis of OTC deficiency in the human fetus. PMID- 3839700 TI - Conformational effects on peptide aggregation in organic solvents: spectroscopic studies of two chemotactic tripeptide analogs. PMID- 3839701 TI - [Effect of leu-enkephalin and the delta-sleep-inducing peptide, M (DSIP), on endogenous noradrenaline release by brain synaptosomes in the rat]. AB - Fluorometry was employed to measure the noradrenaline (NA) content in rat brain synaptosomes depending on the duration of incubation, depolarization effects (40 mM KCl or 1.5 mM ouabain), composition of the synaptosomal fraction and concentration of the peptides. The 10-minute incubation in a potassium medium of a suspension of light synaptosomes was used as an optimal test-system for studying the peptide action. Leu-enkephalin inhibited the depolarization-induced NA release. The effect was abolished by naloxone. The delta-sleep-inducing peptide (DSIP) did not influence the neurotransmitter release at concentrations of 10(-8)-10(-5) M. A mixture of amino acids imitating the amino acid composition of the DSIP influenced spontaneous release of NA. This effect is discussed in connection with the physiological action of the peptide on its intraventricular injection. PMID- 3839702 TI - A single common electrophoretic abnormality of glucocorticoid receptors in human leukemia cells. AB - We determined the mol wt of glucocorticoid receptors in human leukemia cells in order to detect glucocorticoid receptor defects that might cause glucocorticoid resistance. Glucocorticoid receptors in intact cells were affinity labeled with [3H]dexamethasone-21-mesylate and were analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis. Receptors in normal human peripheral blood mononuclear cells and six human leukemia cell lines had mol wt of 97,000. Malignant cells from ten of 25 patients with leukemia contained electrophoretically abnormal glucocorticoid receptors having mol wt of 55,000 in addition to normal size receptors (Mr = 97,000). The receptor abnormality was not restricted to a particular type of leukemia and was seen in cells from both newly diagnosed patients and patients who had received prior chemotherapy, including prednisone. The abnormal receptor was not generated when cells having only normal size receptors were assayed under conditions that favor proteolysis or when cytosol from cells containing the abnormal receptor form was mixed with cytosol from cells containing only normal size receptors. The mol wt of the abnormal receptors in human leukemia cells was the same as the mol wt of receptors in mutant mouse lymphoma cell lines, S49 143R and S49 55R, which have the nuclear transfer-increased phenotype of glucocorticoid resistance. This work describes for the first time a single common electrophoretic abnormality of glucocorticoid receptors in human leukemia cells. Further investigation of glucocorticoid receptor defects in human leukemia cells could lead to an improved understanding of the mechanisms of glucocorticoid resistance in leukemia as well as a method of predicting which patients are likely to be resistant to glucocorticoid therapy. PMID- 3839703 TI - Detection and elimination of duplicates from multidatabase searches. AB - A major problem in the review and synthesis of citations resulting from multidatabase searching is overlap in coverage among the databases. The ability to identify and eliminate duplicate references from a multidatabase search provides an important service and significant time savings for the end user. The Upjohn Company's Corporate Technical Library has developed software to detect and eliminate duplicates from literature searches captured in electronic format. Methods for the identification of duplicates and the merging and sorting of unique citations are discussed, together with the library's procedures for electronic data capture. PMID- 3839704 TI - Organizational dynamics of an NLM-grant-funded consortium: the Nursing Information Consortium of Orange County. AB - The development of the Nursing Information Consortium of Orange County (NICOC) is traced over time, and reasons for the crises encountered are explored. Based on the experiences of NICOC, recommendations for other consortia are included, as well as for the consortium grant process. PMID- 3839705 TI - Use of D-xylose to detect ingestion of a powdered milk food supplement by family members other than the children 0-2 years of age for whom it was intended. PMID- 3839706 TI - A search for selective antagonists at M2 muscarinic receptors. AB - Isolated preparations of guinea-pig ileum and atria have been used to estimate the dose-ratios produced by antagonists at muscarinic receptors. Experiments with 4-diphenyl-acetoxy-N-methylpiperidine (4DAMP) metho-salts and with its isomer, 3DAMP methiodide, indicate that these are only slightly affected by the choice of physiological salt solution, the choice of agonist and the presence or absence of hexamethonium. Methyl or chloro groups in the p-position of the two benzene rings in 4DAMP metho-salts markedly reduce affinity and selectivity. When the two benzene rings are linked together, as in the fluorene-9-carboxylic ester, the affinity for the receptors in the atria is comparable with that of 4DAMP methobromide but that for the ileum is about half, so the selectivity is reduced. When the rings are linked as in the xanthene-9-carboxylic ester, the affinity for receptors in both tissues is greater than that of 4DAMP methobromide but there is less selectivity. When two molecules of 4DAMP are linked together by a polymethylene chain of from 4 to 12 carbon atoms the effects on affinity for muscarinic receptors in the guinea-pig ileum are different from those on affinity for muscarinic receptors in guinea-pig atria. The pentamethylene compound is the most selective: compared with 4DAMP methobromide it has slightly less affinity for receptors in the ileum but much less affinity for receptors in the atria. The effects of the compounds in antagonizing the actions of carbachol on atrial rate are not markedly different from their effects in antagonizing its actions on the force of the atrial contractions. PMID- 3839708 TI - Mechanism of the antinociceptive action of mesaconitine: participation of brain stem and lumbar enlargement. AB - The antinociceptive action of mesaconitine (MA) microinjected into the nucleus reticularis gigantocellularis (NRGC), the nucleus reticularis paragigantocellularis (NRPG), the periaqueductal gray (PAG) or the lumbar enlargement was investigated in rats by use of the tail immersion test. In addition, the effects of beta-adrenoceptor antagonists and an alpha-adrenoceptor antagonist administered intrathecally (i.t.) on the antinociceptive action of MA given into the NRPG were also examined by the tail immersion test. MA (50, 100 ng per rat) microinjected into the NRGC, the NRPG, and PAG and the lumbar enlargement increased the response latency in rats in a dose-dependent fashion. MA (50 ng per rat) microinjected into neighbouring sites, the nucleus reticularis parvocellularis, the nucleus originis nervi abducentis and the fasciculus longitudinalis medialis, elicited no significant effect. Intrathecally administered propranolol (1 and 5 micrograms per rat), atenolol (1 and 5 micrograms per rat) and IPS-339 (1 and 5 micrograms per rat) remarkably inhibited the increase of the response latency induced by MA (50 ng per rat) given into the NRPG. Intrathecally administered phenoxybenzamine (1 and 5 micrograms per rat) inhibited the increase of the response latency induced by MA (50 ng per rat) injected into the NRPG but to a lesser extent than the beta-adrenoceptor antagonists. It is concluded that the NRGC, the NRPG, the PAG and the lumbar enlargement are involved in the sites of the antinociceptive action of MA and that the antinociceptive effect of MA administered into NRPG is elicited by activation of the inhibitory noradrenergic neurones from the NRPG in particularly via beta-receptor-mediated effects of noradrenaline. PMID- 3839707 TI - Stimulation rate modulates effects of the dihydropyridine CGP 28 392 on cardiac calcium-dependent action potentials. AB - Calcium (Ca2+)-dependent action potentials were recorded from 22 mM potassium (K+)-depolarized guinea-pig papillary muscle at several different pacing frequencies in the absence and presence of CGP 28 392 (10 microM), a Ca2+ channel agonist. The maximum upstroke velocity (Vmax) of the slow response action potential was measured to determine relative changes in Ca2+ current as a function of pacing frequency. CGP 28 392 increased Vmax more than two fold at low rates of stimulation (1 or 12 pulses min-1), but had no significant effect on Vmax during rapid pulsing (200 pulses min-1). The enhancement of Vmax was dependent upon extracellular [K+]. Increasing extracellular [K+] from 22 mM to 27 mM suppressed the frequency-dependent agonist effects and increased the antagonist effects on Vmax. These results indicate that CGP 28 392 is a partial Ca2+-channel agonist and suggest that its effects on Ca2+ current are voltage dependent. PMID- 3839709 TI - Feeding and drinking elicited by central injection of neuropeptide Y: evidence for a hypothalamic site(s) of action. AB - Neuropeptide Y (NPY), which exists in very high concentrations in the brain, has been shown to elicit a powerful feeding response and a small drinking response in satiated rats. In order to delineate the brain sites sensitive to these effects, NPY was injected through chronic guide cannulas into seven different brain regions, and the food and water intake of satiated rats was measured one hr postinjection. Injection of NPY (78 pmoles) into hypothalamic areas, namely the paraventricular nucleus (PVN), ventromedial hypothalamus (VMH), and lateral hypothalamus (LH), elicited a strong feeding response; in contrast, injections into extra-hypothalamic areas, namely the amygdala, thalamus, and periaqueductal gray, were completely ineffective. Administration of NPY into the PVN and VMH also elicited a small drinking response; however, all other areas, including the LH, were insensitive to this effect. The findings that NPY was effective in the hypothalamus, as opposed to sites anterior, posterior, lateral or dorsal to this structure, suggest a hypothalamic site(s) of action for this neuropeptide. PMID- 3839710 TI - Atracurium in neonatal anaesthesia. PMID- 3839711 TI - Computer-assisted correlation of structure and biological activity in a set of retinoids. AB - A computer-assisted pattern-recognition system (ADAPT) designed to elucidate structure-activity relationships was applied to a set of retinoids, potentially useful inhibitors of carcinogenesis. A data set of 67 retinoids was used as input to the ADAPT system; their structures were entered, and their 3-dimensional configurations were optimized by a molecular modelling algorithm. Forty of these retinoids were defined as the "more active" class based upon their ability to reverse keratinization in vitamin A-deficient hamster tracheal organ cultures at 10(-10) M or less. The remaining 27 retinoids were defined as the "less active" class due to their lack of ability to elicit this effect at 10(-8) M or more. Thirteen descriptors were generated by ADAPT for each of these retinoids based upon their structures, including: number of ring atoms; double bonds; del Re sigma charges; and principal moments. Pattern recognition analysis techniques were applied to this data set to determine if information contained in these descriptors could generate a discriminant function equation which could separate more active from less active retinoids, successfully. Computer recognition of more active from less active retinoids was demonstrated by a number of pattern recognition techniques, and the discriminant function could predict correctly the relative activity of retinoids of "unknown" activity in 87% of trials. These results indicate the existence of distinct structure-activity relationships in this set of biologically important molecules. PMID- 3839712 TI - Potent antileukemic activity of the novel cytostatic agent avarone and its analogues in vitro and in vivo. AB - Avarone and avarol are novel cytostatic agents which have potent antileukemic activity both in vitro and in vivo (mice). Cell culture experiments revealed that the cytostatic activity of these two compounds on L5178Y mouse lymphoma cells was 13- to 14-fold higher than that determined for HeLa cells and 40- to 43-fold higher than that for human melanoma cells. Nontumor cells (human fibroblasts and human gingival cells) were highly resistant against the two compounds. The inhibitory potency of avarone on L5178Y cells (50% inhibitory concentration, 0.62 microM) was significantly higher than the avarol activity (50% inhibitory concentration, 0.93 microM). Modification of the molecule at the quinone ring or the double bond in the terpenoid skeleton resulted in a significant loss of activity. In vivo studies with L5178Y cells in the ascites of mice confirmed the strong antileukemic effect determined in vitro. At doses of 10 mg/kg given i.p. once daily for 5 days to mice bearing approximately 10(8) leukemia cells, avarone was found to be curative in about 70% of the mice (20% for avarol). The optimal daily i.p. dose of avarone increased life span over controls by 146% when treatment was begun 1 day after tumor implantation and by 87% when treatment was delayed until day 8. Avarol, although active, was less effective. Based on the determined log10 kill values, avarone can be classified as a highly active and avarol as a markedly active cytostatic agent. The efficacy of the two compounds is also emphasized by the therapeutic index of 11.7 for avarone and of 4.5 for avarol. The two agents were determined not to be either direct mutagens or premutagens in the Ames test. PMID- 3839713 TI - Treatment of acute leukemia with amsacrine and high-dose cytarabine. AB - We varied the number of doses of high-dose cytarabine (3 g/m2) given to patients with acute leukemia in relapse who were receiving therapeutic doses of amsacrine (600 mg/m2/course). Twelve patients received 13 courses of therapy. Two of six patients with acute nonlymphocytic leukemia and one of three with acute lymphoblastic leukemia achieved remission. Dose-limiting toxicity (diarrhea) was seen in patients receiving more than five daily doses of high-dose cytarabine. We conclude that therapeutic doses of amsacrine can be combined safely with five daily doses of high-dose cytarabine and that a formal study is now required to assess the efficacy of this regimen. PMID- 3839714 TI - Phase II study with amsacrines (m-AMSA and m-AMSA lactate) in refractory lymphomas. AB - A total of 70 patients with malignant lymphomas refractory to one or more chemotherapeutic regimens were treated with iv amsacrines (m-AMSA and m-AMSA lactate). Of 58 evaluable patients, 12 had Hodgkin's disease and 46 had non Hodgkin's lymphoma. Twenty-nine of the evaluable patients received m-AMSA and 29 received m-AMSA lactate. The amsacrines were recycled every 3 weeks. The doses of m-AMSA were 90-120, 70, and 25-30 mg/m2/day for 3 days, respectively. All patients treated with m-AMSA lactate received a single dose of 225 mg/m2. In Hodgkin's disease, the response rate was 58.3% (one complete response among 12 patients), and in non-Hodgkin's lymphoma, the response rate was 30.4% (six complete responses among 46 patients). The median duration of response was 3 and 5 months, respectively. The response rate was unfavorably affected by the presence of extra-nodal disease and a Karnofsky performance status less than 80. There was no important difference in the incidence and duration of response between m-AMSA and m-AMSA lactate. After vomiting, myelosuppression was the most frequent observed toxic effect. One patient showed an unexpected fatal bone marrow aplasia following the first course of 90 mg/m2. This study indicates that m-AMSA and m-AMSA lactate are active and moderately toxic in previously treated malignant lymphomas. Thus, amsacrines could be effectively incorporated into salvage polydrug regimens. PMID- 3839715 TI - Neurochemically similar myenteric and submucous neurons directly traced to the mucosa of the small intestine. AB - Antisera to neuropeptide Y (NPY) gave an intense immunohistochemical reaction of certain nerve cells in the myenteric and submucous plexuses of the guinea-pig small intestine. Each nerve cell had up to 20 branching, tapering processes that were less than approximately 50 micron long and a long process that could be followed for a considerable distance. This morphology corresponds to that of the type-III cells of Dogiel. The long process of each myenteric cell ran through the circular muscle to the submucosa, and in most cases the process could be traced to the mucosa. The submucous nerve cell bodies also had processes that extended to the mucosa. These cell bodies, in both plexuses, also stained with antisera raised against calcitonin gene-related peptide (CGRP), cholecystokinin (CCK), choline acetyltransferase (ChAT) and somatostatin (SOM), but did not stain with antibodies against enkephalin, substance P or vasoactive intestinal peptide. Thus, it has been possible for the first time to trace the processes of chemically specified neurons through the layers of the intestinal wall and to show by a direct method that CGRP/CCK/ChAT/NPY/SOM myenteric and submucous nerves cells provide terminals in the mucosa. PMID- 3839716 TI - Monomolecular surface film and tubular myelin figures of the pulmonary surfactant in hamster lung. AB - Perfusion fixation via pulmonary trunk was applied to the alveolar lining layer in situ at different lung volumes using a fixative containing tannic acid ferrocyanide osmium. The monomolecular surface film and hypophasic tubular myelin figures were enhanced. In the range of transpulmonary pressure (1-10 cmH2O), the surface film appeared in the form of a single, electron-dense leaflet, 2.7 +/- 0.6 nm (M +/- SD) in thickness while trilaminar membrane structure was retained in all parts of the tubular myelin figures of the hypophase. The surface film was attached underneath at right angles with trilaminar membranes which formed the outermost parts of the tubular myelin. Such structural continuity was taken to support a view that the phospholipid unit membrane of the tubular myelin figure would be transformed at the hydrophobic phase into a pair of monomolecular leaflets, eventually forming the surface film. PMID- 3839717 TI - Molecular probes for the development and plasticity of neural crest derivatives. AB - We have isolated cDNA clones for several mRNAs expressed in sympathetic neurons but not in adrenal chromaffin cells, two neural crest derivatives thought to share a common precursor. The tissue specificity, developmental expression, and hormonal regulation of these genes have been characterized using Northern blot and in situ hybridization analysis. We find that these mRNAs are independently regulated in development rather than synchronously induced. Our evidence also implicates Nerve Growth Factor (NGF) in the induction of one of these genes in postmigratory crest cells. Two of these genes become induced in mature chromaffin cells, which express a neuronal morphology in response to NGF. These results support the idea that the phenotypic plasticity of neural crest derivatives reflects a common precursor, the multipotentiality of which is sustained through terminal differentiation. PMID- 3839718 TI - Coexistence of PP- and glucagon-like-immunoreactivity in endocrine cells of gut and pancreas of mouse and a stomachless fish Barbus conchonius. PMID- 3839719 TI - Avian skin embryonal fibroblasts heterogeneity for lectins surface receptors. AB - Using several fluorescein-coupled lectins (ConA, WGA and SBA) the distribution of surface ligands in chick embryonic skin fibroblasts was studied at two incubation stages. On the basis of the percentage of lectin marked cells, at least, three fibroblastic populations heterogeneous for surface specific-saccharide binding sites were found. Their relative concentration were changed in the course of incubation, thus indicating developmental changes. We discuss this finding in relation to the regulatory mechanism of the spatial and temporal mesenchymal glycosaminoglycan pattern. PMID- 3839720 TI - Effect of adjuvant tamoxifen and CMF on endocrine function of patients with operable breast cancer. AB - The effect of adjuvant CMF (cyclophosphamide, methotrexate and 5-fluorouracil) and tamoxifen (TM) on endocrine function was studied in 120 women with stage I-II operable breast cancer. Sixty patients were premenopausal, of whom 25 were treated with CMF for 9 months, 25 received CMF for 9 months + TM for 2 years, started concurrently, and 10 TM alone for 2 years. In all groups treatment was started within 4 weeks from mastectomy. Sixty patients were postmenopausal and they were all treated with TM alone for 2 years. Plasma levels of estrone + estradiol -17 beta (E1 + E2), follicle stimulating hormone (FSH), luteinizing hormone (LH), prolactin (Prl), and testosterone (T) were determined in all patients before surgery and again at 3-month intervals from initiation of the adjuvant therapy. In ten patients of each treatment group FSH-LH and Prl-TSH release was determined following stimulation with releasing hormones. CMF and CMF + TM therapy resulted in amenorrhea in the majority of premenopausal patients with decrease of E1 + E2 and elevation of FSH-LH plasma concentration to levels of the post-menopausal. In premenopausal women treated with TM a marked increase of E1 + E2 was observed with unaltered FSH-LH plasma concentration. A significant fall of Prl was also present in these patients. In postmenopausal women and premenopausal patients with CMF-induced amenorrhea TM produced a marked fall of FSH-LH and a decrease of Prl plasma level. In no patients was plasma T affected by any of the treatment regimens.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839721 TI - Experimental arteriosclerosis treated by argon ion and neodymium-YAG laser endarterectomy. AB - The argon ion laser (488 and 514.5 nm) and the Nd-YAG laser (1.06 micron) have been used in most studies of laser radiation for treatment of arteriosclerotic cardiovascular disease because their beams can be directed through a delivery fiber. We compared the effects of argon ion and Nd-YAG lasers in vivo on arteriosclerotic rabbit aortas with open laser endarterectomy. A thoracoabdominal exploration was performed in 16 rabbits to isolate the aorta. Laser beams were directed through delivery fibers to produce a line of laser craters at the proximal and distal ends of an atheroma. The lines of laser craters were connected by continuous-wave laser radiation to loosen the plaque and the cleavage plane was developed within the media by continuous-wave laser radiation. End points were fused by continuous-wave laser radiation and the aortas were harvested for light and scanning electron microscopy. Argon ion laser endarterectomy (eight rabbits) required an energy density of 98 +/- 19 J/cm2. Nd YAG laser endarterectomy (eight rabbits) required an energy density of 1147 +/- 129 J/cm2. Perforation did not occur with the argon ion laser but occurred in six of eight Nd-YAG experiments. Even depths of plaque removal resulted from argon ion laser endarterectomy but not from Nd-YAG laser endarterectomy. Gross and microscopic grading of the aortas showed that argon ion endarterectomy surfaces were significantly better than Nd-YAG surfaces (p less than .05). Similarly, argon ion end points were significantly better than Nd-YAG end points (p less than .01).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839722 TI - The design and use of a simple database for head and neck cancer. AB - A simple database for head and neck cancer using a simple coding system is described. New patients and follow-up data can be added easily at the terminal. Interactive data-analysis can easily be performed by anyone who understands the coding system; specific skills in computer programming and system handling are not needed. PMID- 3839723 TI - Increased sensitivity of rabbit ear artery to noradrenaline following perivascular nerve stimulation may be a response to neuropeptide Y released as cotransmitter. AB - Neuropeptide Y (NPY 10(-10)-10(-7) mol/l) had little or no effect on the perfusion pressure of rabbit isolated ear arteries but potentiated the brief contractile responses to injections of noradrenaline, histamine or brief periods of electrical stimulation (2-20 Hz for 5 s). This effect was slowly reversible. Similar potentiation was seen following long periods of electrical stimulation (2 40 Hz for 1-5 min) which produced well sustained increases in perfusion pressure. Following even longer periods of electrical stimulation (10-30 min) during which the perfusion pressure was not maintained, responses to noradrenaline and histamine were potentiated but the responses to electrical stimulation for 5 s were greatly reduced. The increase in sensitivity following prolonged electrical stimulation may be due to NPY released as a cotransmitter. PMID- 3839724 TI - Isolation of genomic clones coding for the heavy chains of two human cardiac myosins. AB - A 14 kilo-base pair DNA clone (lambda HCMHC8) was isolated from a human genomic library by hybridization with a complementary DNA coding for a rabbit cardiac myosin heavy chain. lambda HCMHC8 hybridized to RNA isolated from cardiac but not skeletal muscle and formed heteroduplexes with a genomic clone coding for the fast type of rabbit cardiac myosin heavy chain. lambda HCMHC8 represented at least the 3' half of the gene and contained over 11 exons which together spanned 4 kb of the coding region estimated to be 6 kb. Probes made from lambda HCMHC8 were used to rescreen the library in order to isolate overlapping clones and so extend the sequence (estimated to be approximately 25 kb for the whole gene, including introns). In addition, a clone having a different restriction map was isolated suggesting that man, like rat and rabbit, has two cardiac myosin heavy chain genes. These may code for proteins having different ATPase activity and be expressed in different proportions in different cardiac states, including hypertension. PMID- 3839725 TI - Internal derangement of the knee: diagnosis by arthrography, arthroscopy, and arthrotomy. AB - Three hundred eighty-four cases involving all patients with meniscal or anterior cruciate ligament tears were examined surgically by 16 orthopedic surgeons over two distinct 12-month periods. The incidence of both menisci (ipsilateral knee) torn was 3.9%, and the ratio of medial to lateral meniscal tears was 2.7:1. Twelve percent of cases had tears of the anterior cruciate ligament, 70% of which were found with a concomitant medial meniscus tear. Arthrography was completely accurate in 73.2% of cases, and arthroscopy was accurate in 94.9%. When clinical impression, arthrography, and arthroscopy were combined, the overall diagnostic accuracy was 96.8%. PMID- 3839726 TI - Meniscus repair in the athlete. AB - The rationale, surgical selection and technique, aftercare, and results of meniscus repair have been presented with special emphasis on the unique issues relating to the competitive athlete. Even though the risk of rerupture is higher in an athlete than a nonathlete (just as the risk of injury to a normal meniscus is higher), and in spite of the increased amount of time required for meniscus healing and maturation before return to athletics, repair of suitable meniscus tears should be considered for most, if not all, athletes. PMID- 3839727 TI - Knee rehabilitation following arthroscopic meniscectomy. AB - Guidelines for knee rehabilitation after conventional open meniscectomy are generally well known. Less agreement exists on rehabilitation following arthroscopic meniscectomy. The program is sometimes arbitrary. Rehabilitation should follow a logical progression regardless of the type of surgery performed. Rehabilitation following knee surgery can be divided into four phases: immediate post-operative period, early healing phase, late healing phase, and conditioning for return to preinjury activity. Following arthroscopic surgery, the overall recovery time can be significantly shortened compared to conventional arthrotomy, primarily by decreasing the length of the early postoperative phases. A smaller incision causes less soft-tissue injury to skin, capsule, synovium, and other periarticular structures, resulting in less quadriceps inhibition and a more rapid recovery. The rate of tissue healing is not altered, however, and the knee must still heal completely before the patient can return to a full functional level. Not all patients are rehabilitated uniformly, and a great deal of variability exists following arthroscopic surgery. Factors that affect the speed of rehabilitation and return to normal function are the extent of meniscectomy performed, the coexistence of additional intra- or extra-articular pathology, and individual patient differences. Therefore, an arbitrary time frame for rehabilitation following arthroscopic meniscectomy is not recommended. Rather, each patient should progress from one stage of rehabilitation to the next, based on objective knee findings. PMID- 3839728 TI - Clinical significance of knee joint changes after meniscectomy. AB - The incidence of Fairbank's radiologic knee joint changes after unilateral meniscectomy was investigated in 180 patients. All patients who had a fracture, cartilage disorders, and/or ligamentous instability at the time of operation or suffered from identical lesions during the follow-up period were excluded. The degree of Fairbank's changes, squaring and sclerosis of the tibial and femoral chondylar articular surfaces, was compared with the postoperative results. The assessment of the results was based on the patient's history. An unsatisfactory postoperative result appeared to coincide more often with Fairbank's changes, but no relation could be demonstrated between the degree of Fairbank's changes and the postoperative result. Fairbank's changes were observed in 77 (42.8%) of the patients. No relation could be demonstrated between the length of the follow-up period and the degree of Fairbank's changes. PMID- 3839729 TI - Lack of pharmacokinetic interaction between cimetidine and pirenzepine. AB - The oral administration of pirenzepine (PRZ), an antimuscarinic agent, has a variable effect on gastric acid secretion in patients with duodenal ulcer, and it seems to potentiate cimetidine-induced inhibition of secretion. The possibility of a pharmacokinetic interaction between these drugs was examined in eight patients who received cimetidine and PRZ alone and in combination in a crossover fashion. Cimetidine, 600 mg b.i.d., PRZ, 50 mg b.i.d., or combination therapy were each given for 1 week before the study. Serum samples were serially drawn during each dosing interval for determination of cimetidine and PRZ concentrations by HPLC and RIA, respectively. Cimetidine given alone or with PRZ exhibited diurnal variation, as the peak serum concentration was lower after the nighttime dose than after the morning dose. PRZ showed intersubject variation. However, each drug failed to alter the pharmacokinetic indices of the other. The times to attain the peak serum concentration were not significantly different for cimetidine alone or with PRZ, arguing against an effect of PRZ on gastric motility in the doses we used. The greater and prolonged acid inhibition with the combination of cimetidine and PRZ, therefore, may stem from a synergistic action of both drugs on receptor sites on gastric parietal cells. PMID- 3839730 TI - Transport of charged macromolecules across a biological charged membrane. AB - The glomerular capillary wall of the kidney behaves as an electronegatively charged structure consisting of three layers, the lamina densa and the two laminae rarae, which are differently charged. Thus, a three layer model is proposed to analyse the transport of charged macromolecules across this wall. A modified Nernst-Planck equation describes the macromolecule flux across the wall and a Donnan equilibrium is assumed at each interface. For a given value of the fixed charge concentration in each layer, the local sieving coefficient of the macromolecule, i.e. the ratio between the concentrations in the filtrate and in the plasma, is calculated. A sieving curve which relates the sieving coefficient to the Einstein-Stokes radius of the macrosolute is obtained. The fixed charge concentrations in each layer are iteratively modified until simultaneous adjustment is achieved between calculated and experimental curves, for positively and negatively charged tracers and their neutral equivalent. PMID- 3839731 TI - User friendliness in microcomputer programs. AB - Writing programs for use by others is not easy. Above all, one must know the group the program is written for, and try to relate the program to this group. PMID- 3839732 TI - Cycle-triggered averaging of respiration-related neuronal activity. AB - A computer system is presented which provides off-line computation of cycle triggered histograms (CTH) of respiration-related neuronal activity. Binwidths of the histograms are freely selectable by software from 10 ms to 100 ms. For special evaluation purposes, CTHs can be standardized in different ways concerning cycle duration as well as amplitude. Time incidence of maximum frequency, center of gravity and expiration-to-inspiration phase transition within the respiratory cycle are computed. The system employs special hardware interfaces to an 8-bit microcomputer which are briefly described. Data acquisition, data manipulation and output handling of the results are performed by chaining 3 compiled BASIC programs. Some comments on peculiarities of the BASIC language concerning combined application of a BASIC interpreter and a BASIC compiler are brought up. The usefulness of the method is demonstrated by examples of CTHs computed from the activity of medullary respiration-related neurons as well as of the corresponding phrenic nerve mass activity. PMID- 3839733 TI - Timing pulse and sampling programs implemented on a laboratory microcomputer. AB - This paper presents two programs implemented on a microcomputer for analog-to digital (A-to-D) conversion of neurophysiological signals. The first program, TIMET, sets flexible pulse trains for the timing of the A-to-D conversions, executed by the second program, ADC8. TIMET contains options for a continuous or a triggered pulse train with variable onset delay. ADC8 allows sampling up to 30 kHz for one channel and 9 kHz for the maximum of 7 channels, with about 8 microseconds lag between channels. The digitized data are displayed with interactive gain control from keyboard input, and selected sweeps can be stored on disk files. PMID- 3839734 TI - Microcomputer experience in analysis of flow cytometric DNA distributions. AB - The program described analyses DNA histograms obtained in flow cytometry using the Gaussians method. The program is written in BASIC to run on a low-cost microcomputer. It utilizes a simple strategy to obtain good estimates of the parameters required for reducing the problem to a task solvable with linear least squares methods. Features of the program are flexibility, since it is possible to choose different options for parametrization and spacing of Gaussians, and the fact that the operator is not required to provide interactive inspection or inputting parameter values. The capability and velocity of the program, in all its options, are tested and compared on a series of different (not computer simulated) histograms obtained in our flow cytometry laboratory. Our results suggest that a fresh approach to parametrization may be useful. PMID- 3839735 TI - Two-pool model analysis of data in hemodialysis by means of programmable pocket calculator TI 59. AB - Four parameters of a two-pool model are evaluated by an iterative method using the explicit solutions of the linear differential equations. For this it was presumed that the residual renal clearance is sufficiently small. Five data pairs of measured plasma concentrations ci for the time points ti (i = 0 to 4), as well as the dialyzer and residual renal clearances (KD and KR), must be given and put in the calculator. A sample run is shown for urea kinetics. The parameter estimation takes about 10 min. The program is suitable to assist in the individualization of dialysis therapy. PMID- 3839736 TI - A computer program package for relative survival analysis. AB - A computer program package has been constructed for use in patient survival analyses for chronic diseases based on aggregated data. The central concept of the analyses--the relative survival rate--is the ratio of the observed survival rate of the patients to the survival rate expected in a group in the general population similar to the group of patients at the beginning of the follow-up (interval), with respect to age, sex and calendar time. This quantity is used to measure patient survival adjusted for the effect of mortality attributable to the competing risks of death without employing information on causes of death of individual patients. The package contains three alternative methods of estimating the relative survival rates, two different ways of estimating the expectation of life for the patients, and five methods of testing the relative survival patterns using information on the whole follow-up period. Conventional survival and competing risk analysis can also be performed with the package. It is hoped that the package will facilitate standardization of statistical methodology and terminology in long-term survival studies for chronic diseases. PMID- 3839737 TI - TSCORE: a T-score profile pattern analysis program. AB - A program has been written to determine T-score profile patterns, thus allowing the immediate assessment of morphological similarities and differences between taxa. For a given data set, the program will produce T-scores, T-score correlation coefficients and associated significance statistics, weighted means and standard deviations for all input variables, and a graphic display of the T score profile pattern(s). This program should prove to be of great interest to physical anthropologists, zoologists and other researchers in the life sciences with an interest in taxonomy, systematics and phylogeny. PMID- 3839738 TI - BIODYN: a program to estimate biological dynamics of human populations. PMID- 3839739 TI - The measurement of interobserver agreement based on categorical scales. AB - The Kappa statistic is used to measure the interobserver similarity based on categorical scales. The cases of two or more observers with two or more rating categories are considered. Allowance is made for the attachment of disagreement weights, based on rational or clinical grounds, to different rating categories. Tests of hypotheses about the conditions Kappa = 0 and Kappa greater than 0 are conducted. PMID- 3839740 TI - A FORTRAN program for testing trend and homogeneity in proportions. AB - A FORTRAN program is provided for testing linear trend and homogeneity in proportions. Trend is evaluated by the Cochran-Armitage method and homogeneity is tested by an overall X2 test as well by multiple pairwise comparisons by the Fisher-Irwin exact method. The program should be easy to implement on any size of computer with a FORTRAN compiler. PMID- 3839741 TI - A program for logistic prediction modelling. AB - A computer program has been developed that can be used for analysing a binary outcome variable and a set of regressors of type interval with a logistic (i.e. nonlinear) model. PMID- 3839742 TI - Effect of model trauma on the turnover of protein and hemoprotein components of hepatic microsomal membrane in immature rats. AB - Administration of 14C-leucine and delta-[3,5-3H]-aminolevulinic acid to immature male rats leads to the incorporation of radioactivity into microsomal protein, including the hemoprotein cytochrome P-450. Non-hepatic regional ischemic trauma results in an increase in the half-life of total microsomal protein, but does not exert the same effect on microsomal heme-associated protein. Loss of radioactivity from microsomal hemoprotein, primarily cytochrome P-450, from traumatized animals exhibits a biphasic pattern similar to that in control animals. The half-life of both the fast-phase component and the slow-phase component is unchanged by trauma. Trauma does, however, increase the ratio of the fast- to slow-phase components of microsomal heme. A significant increase in heme oxygenase activity after trauma suggests that the fast-phase component of hepatic microsomal cytochrome P-450 is more extensively degraded. PMID- 3839743 TI - [Chemiluminescence of peritoneal macrophages activated by non-natural polyelectrolytes]. PMID- 3839744 TI - [Synonymous codon usage at the ends of double-stranded regions in the secondary structure of mRNA]. PMID- 3839745 TI - [A panel of monoclonal antibodies and antisera for the diagnosis of human hemoblastoses]. PMID- 3839746 TI - [Antacid prevention of stress lesions hinders endoscopic hemostasis]. PMID- 3839747 TI - Effects of pH upon the environmental fate of [14C]fenitrothion in an aquatic microcosm. AB - The environmental fate of [14C]fenitrothion was evaluated in aquatic microcosms held at pH 8.3 or 6.7. No general effect attributable to pH was observed; however, several significant interactions were identified. Of these, the findings that statistically higher amounts of radioactivity were present in water held at pH 6.7 and that significantly less metabolism of the parent compound occurred in the organisms at pH 8.3 were preeminent. These differences seen in metabolism and environmental fate between pH values are relatively minor and do not compromise the safety of the compound. PMID- 3839748 TI - Accumulation of alveolar surfactant following delivery and ventilation of premature lambs. AB - We studied the accumulation of surfactant in the alveoli and airways from birth to 10 h of age in 60 lambs delivered prematurely at a mean gestational age of 136 days. The lambs were delivered by cesarean section and ventilated by varying peak inspiratory pressures only to normalize arterial blood gas and pH values. Alveolar surfactant accumulation was measured either by alveolar wash after timed sacrifice or by repetitive sampling of the airways using an isotope dilution technique. The fall in specific activity of phosphatidylcholine with time was measured after the intratracheal administration of either a trace dose of 3H labeled natural surfactant and synthetic 14C-dipalmitoylphosphatidylcholine (DPPC) at birth or a treatment dose of the same mixture at 5 h of age (about 55 mg of total surfactant lipid/kg body weight). From the change in phosphatidylcholine-specific activities and the quantities and specific activities of phosphatidylcholine measured in alveolar washes, we found that the surfactant pool sizes as estimated by alveolar wash or by the isotope dilution technique were similar. The pool size of alveolar surfactant increased fourfold from birth to 20 min of age and doubled again by 10 h of age. The shape of the curve for the accumulation of alveolar surfactant versus time was independent of the final pool size achieved at 10 h of age. Sonicates of DPPC when mixed with either a trace amount or a treatment dose of natural surfactant were treated by the premature lung in a manner indistinguishable from the phosphatidylcholine associated with natural surfactant. PMID- 3839749 TI - Regulation of type I collagen synthesis. Total pro alpha 1(I) and pro alpha 2(I) mRNAs are maintained in a 2:1 ratio under varying rates of collagen synthesis. AB - The type I collagen molecule contains two alpha 1(I) chains and one alpha 2(I) chain. Previous investigations, using embryonic chick calvaria, have indicated that the two chains are synthesized in a 2:1 ratio which is controlled at a pretranslational level, since the cells contain twice as much translatable pro alpha 1(I) mRNA as pro alpha 2(I) mRNA. The present report describes hybridization analyses of the cellular levels of total cellular RNAs coding for the pro alpha 1(I) and pro alpha 2(I) chains, using as probes two cloned cDNAs complementary to chick pro alpha 1(I) and pro alpha 2(I) mRNA, respectively. Total cellular RNA was extracted from embryonic chick calvaria, pro alpha 1(I) and pro alpha 2(I) RNA sequences were quantified by Northern hybridization using conditions ensuring that hybridization efficiency and specific radioactivity were the same for the two probes. Similar analyses were carried out on RNA extracted from calvaria with different levels of collagen synthesis after culture in the presence or absence of ascorbic acid. The results for all samples analyzed indicate that total cellular pro alpha 1(I) and pro alpha 2(I) mRNAs are present in a 2:1 ratio which is maintained even during variations in collagen synthesis rate. There is no evidence for regulation mediated by different rates of processing of mRNA precursors, although preferential degradation of the pro alpha 2(I) gene transcript cannot be excluded. Thus, the synthesis of type I procollagen chains is presumably coordinated by transcriptional control. PMID- 3839750 TI - Identification and quantification of a messenger ribonucleic acid induced by polynuclear aromatic hydrocarbons--using a cloned human cytochrome P-450 gene. AB - We have isolated four overlapping human genomic clones associated with the polynuclear aromatic hydrocarbon-induced form of cytochrome P-450. The form of P 450 most closely associated with polynuclear aromatic hydrocarbons induction has been defined as P1-450. These four overlapping genomic clones span a total of 31.0 X 10(3) base pairs in length with the coding sequence lying in the center of these clones. Translation in vitro of 3-methylcholanthrene-induced mRNA, selected with the human P1-450 genomic clone, detect a protein with Mr 52000, which is immunoprecipitable by the anti-(mouse P1-450) antibody. The isolated human P1-450 genomic clone hybridizes to 3-methylcholanthrene-induced mRNA from monkey liver, benzanthracene and 3-methylcholanthrene-treated human mammary tumor cells (MCF 7), but not to isosafrole-treated human cells. Upon treatment with polynuclear aromatic hydrocarbons there is a positive correlation between induced arylhydrocarbon hydroxylase (flavoprotein-linked monoxygenase) activity and the amount of mRNA that hybridizes to the isolated human genomic clone for P1-450. The size of mRNA, induced from human cells and monkey liver by polynuclear aromatic hydrocarbons, is around 3.3 X 10(3) base pairs, which is the same as the larger of two mRNA induced by polynuclear aromatic hydrocarbons in the inbred strain of mouse (C57BL/6N). Our data also showed that the isolated DNA clone can detect a mRNA size of 3.3 X 10(3) base pairs from phytohemagglutinin-activated, benzanthracene-treated human lymphocytes. Densitometer scanning indicated the presence of a 3.6-fold variation (highest-lowest) in the levels of lymphocyte P1 450 mRNA contents among six individuals studied. PMID- 3839751 TI - Cis-platin in combination with low dose adriamycin and cyclophosphamide in advanced ovarian carcinoma. AB - Between February 1979 and August 1981 20 patients with advanced ovarian carcinoma have been treated according to a mitigated PAC-V protocol: cis-platin 20 mg/m2 D1 5, adriamycin 35 mg/m2 D1 and cyclophosphamide 400 mg/m2 D1, and cyclophosphamide 400 mg/m2 b 7, q 28 days. Sixteen patients were evaluable with objective, measurable tumour-parameters. Minimal follow-up time was 21/2 years. Overall response rate was 50% (8/16) with complete response in 12.5% (2/16). Median duration of complete response was 40+ months, of partial response this was 16+ months. Two year survival rate was 9/16. Patients who had a complete debulking prior to PAC-V therapy or had not been treated before responded best (5/6 and 6/7 respectively). Thirteen patients indicated experiencing subjective improvement in their condition. Haematological, renal or neurological toxicity never caused threatening problems. In conclusion, a chemotherapy regimen containing a mitigated dose of adriamycin and cyclophosphamide next to full dose cis-platin yielded good tumour and patient response without severe toxicity. PMID- 3839752 TI - Our experience regarding precautional chemotherapy in breast cancer. AB - 14 patient with breast cancer of loco regional diffusion (M0), 4 of whom had negative axillary lymph nodes, were administered precautional chemotherapy with CMF, on the basis of anatomo-clinical prognostic elements (size of the neoplasia, grading (tumoral limits, neoplastic embolisation etc.). Such elements with data on hormonal receptors allowed us to select the patients with high relapse risk, to undergo medical treatment. PMID- 3839753 TI - Comparison of three semiautomatic methods for determination of left ventricular ejection fraction from gated cardiac blood pool images. AB - A number of computer programs exist for the determination of ejection fraction from gated blood pool images. Three commercially available algorithms were compared on the same radionuclide data from 50 catheterized patients. The methods used were: (1) simple thresholding, (2) second derivative edge determination, and (3) a combination of these two. There was good correlation with catheterization ejection fraction for all three methods using smoothed data [r = 0.781, 0.77, 0.84 respectively (P less than 0.01)]. However, interobserver variance was significantly decreased (P less than 0.01) by use of the second derivative method when compared with the other two methods and catheterization. Thus, if accuracy and low interobserver variance are required, then a combination of a second derivative and thresholding method is preferable. PMID- 3839754 TI - Clinical pharmacokinetics of 6-hour infusion of high-dose methotrexate. Preliminary trial of monitoring high infusion doses. AB - Methotrexate (MTX) in serum was measured by RIA in 12 cancer patients receiving high doses of MTX (2 to 8 g/m2) in 6 hour infusions 69 treatments were studied. The peak serum level was proportional to the dose administered and was always greater than 10(-4) M. 2 elimination phases were seen: the first had a mean half life of 2.36 h and the second a mean half-life of 16.14 h. 24 hours after beginning the infusions there were very large variations in individual serum concentrations of MTX, from 2.4 10(-6) M to 1.9 10(-5) M by 24 h after 8 g/m2. To control these variations, a mathematical model for prediction of the individual pharmacokinetic pattern of a 6 hour-infusion of high-dose MTX by kinetic analysis of a low-test dose is proposed. A program was created for an Apple III computer using toxic and therapeutic serum levels of MTX selected by the clinician. The computer program is adaptable to any infused substance for variable infusion times, thus introducing new advances over existing methods. PMID- 3839755 TI - N-terminal amino acid sequence and some properties of isopenicillin-N synthetase from Cephalosporium acremonium. AB - Isopenicillin-N synthetase (IPNS) was purified to homogeneity from Cephalosporium acremonium C0728. The enzyme existed in two states during purification; an oxidised state with a disulphide linkage and its reduced state. These two forms can be interconverted in the presence or absence of thiol agents, and separated by fast protein liquid chromatography (FPLC) with the strong anion exchange Mono Q column. The enzyme is a monomer with a molecular mass of 38 kDa and pI 5.05. The first 50 amino acid N-terminal sequence of the enzyme was determined. The purified enzyme has an absolute requirement of Fe2+ and a 2-electron donor for activity. PMID- 3839756 TI - Molecular cloning of the human thyrotropin-beta subunit gene. AB - Genomic DNA fragments that carried a gene for human thyrotropin-beta (hTSH beta) subunit were isolated. Nucleotide sequence analysis of the gene showed that the hTSH beta subunit precursor consists of 138 amino acid residues. There is an N terminal sequence of 20 amino acids as a signal peptide, followed by 112 amino acids, whose sequence is in agreement with that known for the secretory form of hTSH beta subunit. This is followed by an additional stretch of 6 hydrophobic amino acids, which may be eliminated post-translationally. The coding region is separated by an intron of about 460 bp. Genomic Southern blot hybridization analysis suggested that the hTSH beta gene is a unique single copy gene. PMID- 3839757 TI - Serum and thyroid hormones T3 and T4 regulate nerve growth factor mRNA levels in mouse L cells. AB - Mouse L cells synthesize and secrete a neurotrophic factor related to the beta subunit of the submaxillary gland nerve growth factor (NGF) of male mice. Use of a cDNA probe which encodes the beta-NGF mRNA demonstrated that L cells produce a transcript identical in size to that of the submaxillary gland. Moreover, target sites of restriction enzymes EcoRI, PstI and BamHI were not significantly rearranged in the beta-NGF gene locus of these cells. The abundance of the beta NGF transcript was found to depend on culture conditions. Removal of serum depressed the cellular content of polyadenylated RNA by a factor of 1.7, and decreased specifically the pool of beta-NGF transcript by an additional factor of 4. The presence of 10(-7) M testosterone in the serum-free medium did not modify the level of beta-NGF mRNA, while addition of 10(-7) M T3 (or T4) increased this level by a factor of 1.5. These data provide the first evidence that the beta-NGF mRNA of L cells is subjected to regulation, but in a way apparently different from that described for the submaxillary gland. PMID- 3839758 TI - Endogenous digoxin-immunoactive factor in human subjects. AB - Endogenous digoxin-like immunoactivity has been detected in the blood of adult patients in renal failure, newborn infants, and pregnant women in the third trimester. Blood levels of this activity increase in pregnant women as gestation progresses, and preliminary data suggest that the activity is increased in hypertensive pregnant women relative to normotensive pregnant women. Similar immunoactivity has also been detected in amniotic fluid and in the urine and serum of normal healthy subjects. The factors giving rise to this immunoactivity cross-react with antibodies used in many commercially available immunoassays for digoxin. The immunoactive factor isolated from human subjects is water soluble and exists tightly but reversibly bound to proteins in serum. The extent of this protein binding is altered in the clinical conditions studied relative to normal adults. This altered protein binding accounts for the detection of this factor by many of the commercially used immunoassays for digoxin. In this article I summarize recent findings related to detecting this activity in the blood of several clinical populations where the accurate measurement of digoxin may be compromised. I also summarize the preliminary isolation and characterization of the factor responsible for this immunoactivity. PMID- 3839759 TI - What do glaucomatous visual fields really look like in fine-grid computerized profile perimetry? AB - Analysis of the visual fields of 20 glaucoma patients by Octopus automatic perimeter, using 229 F2 programs consisting of 30 degrees long profiles with 1 degree resolution and double measurements of the light sensitivity threshold, revealed that: (1) there is a positive correlation between mean loss and mean short-term fluctuations; (2) short-term fluctuations tend to be larger with increasing loss of sensitivity; (3) however, small short-term fluctuations were also seen in areas of greatly reduced sensitivity; (4) analysis of the F2 programs showed 12 different abnormal patterns; (5) the most frequently found, 'increased scatter with normal sensitivity', appears to be the earliest perimetric sign of glaucoma, and (6) progression of the glaucomatous damage produces a 'grey area of increased scatter', usually accompanied by reduced sensitivity with a poorly defined lower and upper threshold. It is shown that a relative scotoma does not consist of a sharply bordered area with definite loss of sensitivity, but instead of a region of increased scatter with poorly definable borders. It is indicated that these sensitivity disturbances cannot be detected without extensive threshold perimetry. These findings can, furthermore, explain why quite large differences occur from one visual field examination to the next without the involvement of actual pathological changes. For combined display of several F2 programs a new mode of graphical representation is introduced. PMID- 3839760 TI - Long-term fluctuations versus actual field loss in glaucoma patients. AB - In following glaucomatous visual fields with automated perimetry, one becomes aware of the difficulty in differentiating between long-term fluctuations and actual changes. We have analyzed visual fields of one randomly selected eye of each of 34 patients (mean age = 61.8 +/- 12.3 years) with proven glaucoma chronicum simplex and at least 4 (mean = 5.6 +/- 1.9) visual field examinations with programs 31 and/or 33 of the Octopus 201 within at least 21 months (mean = 32.6 +/- 6 months). When a group of earlier visual fields is compared with a group of later ones utilizing the statistical program delta-change, the results of regression analysis, based on data from program delta-series, are juxtaposed to the results of the t test with very good correlation. This investigation confirms that glaucomatous visual fields exhibit considerable long-term fluctuations; as long as field loss and gain observed over a longer time period are evenly distributed, the symmetrical portions of the distribution curve may serve as the outer limits of long-term fluctuation. In this regard, definite visual field deterioration was discerned in none of our medically treated patients over an average observation period of 32 months. If more selective criteria for differentiating between long-term fluctuations and actual field change are used (such as measurement of long-term fluctuations performed in earlier investigations, the t test of program delta-change, regression analysis of the data produced by program delta-series, as well as the correspondence between the t test and the correlation coefficient of the regression analysis), 3 eyes have changed for the worse regarding loss per test location, and 3 have changed for the worse regarding sensitivity. PMID- 3839761 TI - Histone H1 in nuclei of butyrate-treated murine lymphosarcoma cells has increased affinity for heparin. AB - Nuclei from butyrate-treated murine lymphosarcoma cells were incubated with different amounts of the polyanion heparin, which is known to interact predominantly with chromatin-associated histones. Unlike isolated histone H1, histone H1 in the nuclei of butyrate-treated cells was found to display an enhanced affinity for the binding to heparin as compared to histone H1 from control cells. Dephosphorylation of histone H1 as a result of butyrate treatment of the cells is discussed as a possible factor involved in the observed higher affinity of the protein for heparin. PMID- 3839762 TI - A mouse beta-globin mutant that is an exact model of hemoglobin Rainier in man. AB - A mutation induced by ethylnitrosourea in a spermatogonial stem cell of a 101/H mouse has resulted in a structurally altered beta-diffuse major globin in one of his offspring. The mutant hemoglobin is associated with polycythemia, rubor, increased oxygen affinity and decreased hem-hem interaction. The mutant haplotype has been designated Hbbd4, polycythemia. Amino acid analysis of the mutant globin has shown that a single substitution beta 145 Tyr----Cys has occurred, and it is proposed that ethylnitrosourea induced an A----G transition in the tyrosine codon (TAC----TGC). This murine polycythemia is homologous with hemoglobin Rainier in man, in which the amino acid substitution is also beta 145 Tyr----Cys and which is associated with similar physiological consequences. PMID- 3839763 TI - Molecular cloning and structure of an autosomal processed gene for human phosphoglycerate kinase. AB - The human genome contains several DNA sequences homologous to cDNA for X-linked phosphoglycerate kinase (PGK). In the course of screening a genomic library containing a mutant gene for X-linked PGK (PGK-Matsue), we obtained a recombinant clone that cross-hybridizes to PGK cDNA. Restriction analysis suggests that the clone overlaps with a clone previously found to originate from chromosome 6, and which has been suggested to code for testis-specific PGK [Szabo et al., Proc. Natl. Acad. Sci. USA 81 (1984) 3167-3169]. The DNA fragment we have cloned contains 1252 bp that are homologous to the coding part of human PGK cDNA, and has an initiation codon, an in-phase termination codon, direct flanking repeats, and no introns. The maximum homology between the DNA and PGK cDNA is 85% at the coding nucleotide level, and it is 86.2% at the translated protein level; homology is also found in their 3'-flanking sequences and adenine-rich tails. These results suggest that the cloned DNA is most likely a processed pseudogene for PGK located on chromosome 6. PMID- 3839764 TI - Peptic ulcer disease: current management in the elderly. AB - Pain is less frequently the initial complaint in the elderly; melena is a more frequent presentation of ulcer disease. Also, in case of a complication, signs and symptoms are less severe. If one decides to treat an elderly patient symptomatically--without the benefit of any diagnostic study--the patient should be followed closely. The physician should be satisfied that at least partial relief is occurring within the first few days. PMID- 3839765 TI - Red cell NADH diaphorase variants in Japanese. AB - Human red cell NADH diaphorase isozyme patterns were examined in 5,046 healthy adult Japanese by starch gel electrophoresis. Twenty had Dia 2-1 and 3 had Dia 4 1 phenotypes. The incidence of Dia variants in patients with mental retardation, cerebral palsy, epilepsy and Down's syndrome was also examined and compared with that of healthy people. It was noticed that thin-layer isoelectric focusing on polyacrylamide gel was very useful for discriminating variant bands from 'aging bands'. PMID- 3839766 TI - [Therapeutic activity of calcitriol (1,25-dihydroxycholecalciferol) in Hailey Hailey disease]. PMID- 3839767 TI - Detection of soy protein in soy lecithin, margarine and, occasionally, soy oil. AB - Samples of soy lecithin, soy oil and margarine were tested for the presence of soy proteins by an inhibition technique using ELISA. All but one of the soy lecithin samples contained soy protein, as did some of the soy oil and margarine samples. The positive margarines contained only about 25% as much soy protein as the soy lecithin preparations. The presence of soy proteins in these soy products might account for hitherto unrecognized exposure to soy proteins in various foods. PMID- 3839768 TI - Two CEA and three NCA species, although distinguishable by monoclonal antibodies, have nearly identical peptide patterns. AB - In perchloric acid extracts of normal lung and colonic tumors, 3 NCA molecules were identified by monoclonal antibodies that cross-reacted with CEA, which itself gave 2 bands in SDS-PAGE. The proteins had molecular weights of 50, 75 and 97 kd, while the 2 CEA molecules banded at 180 and 160 kd in SDS-PAGE. No MAb recognized only one molecule, with the exception of MAb 3/13 which precipitated solely the upper CEA band. Analysis of the biochemical relationship of the cross reactive antigens showed that none of them contained any internal methionine. Furthermore, after digestion by thermolysin, the peptide maps of the immunoprecipitated molecules showed very close similarities, if not identity. When the cross-reactive and the CEA were compared, the only differences found were in the upper CEA band, which apparently lacked one hydrophobic peptide, while the 97 kd cross-reacting protein showed one extra peptide. We conclude from our results that CEA and the cross-reacting molecules are composed of nearly identical, small (i.e. less than 50 kd) polypeptide chains. PMID- 3839769 TI - Chemotactic activity of hydroxyalkenals on rat neutrophils. AB - Previous results from our laboratory showed that in vitro 4-hydroxyoctenal, 4 hydroxynonenal (HNE) and 4-hydroxytetradecenal elicit a neutrophil chemotactic response in the presence of albumin. Data presented here indicate that other hydroxyalkenals (4-hydroxyundecenal and 4-hydroxy-pentadecenal) also exert a chemotactic attraction on rat pleural neutrophils. The different aldehydes tested show a wide activity-concentration range, the most powerful being 4 hydroxyoctenal. Unlike most chemoattractants, the hydroxyalkenals seem deprived of chemokinetic properties. The mechanism by which these compounds may act on granulocytes is analysed. Experiments investigating the deactivation phenomenon induced by HNE indicate that this aldehyde acts as a chemoattractant by triggering mechanisms different from N-formylmethionyl-leucyl-phenylalanine (fMLP). In fact, cells pre-incubated with this peptide fail to respond chemotactically to the same compound, but are still able to respond to HNE. Similarly, the preventive contact of neutrophils with HNE is unable to influence the chemotactic effect of fMLP. PMID- 3839770 TI - The Standard Immunisation Recall System: should it be adopted now or in the future? PMID- 3839772 TI - Hemoglobin Twin Peaks alpha 113 (GH1) Leu----His. PMID- 3839771 TI - Oxygen binding and stability properties of Hb Santa Ana (beta 88 Leu----Pro). AB - Hb Santa Ana (beta 88 Leu----Pro) was found at a level of 30% of total hemoglobin in red cells from a patient with congenital hemolytic anemia. Since no detailed functional studies of this hemoglobin have been done previously, we determined oxygen equilibrium curves of red cell suspensions, hemolysates, and isolated Hb Santa Ana. The P50 values obtained were 22.5 mm Hg (37 degrees C, pH 7.4) for red cell suspensions (normal mean = 27.0 mm Hg), 10.0 mm Hg (25 degrees C, pH 7.0) for hemolysate (normal = 13.5 mm Hg), and 1.3 mm Hg (25 degrees C, pH 7.0) for isolated Hb Santa Ana. Measurements of mechanical stability of Hb Santa Ana showed that the oxy-form of this hemoglobin was 10 times more unstable than that of Hb S and 100 times more unstable than that of Hb A. The deoxy-form of Hb Santa Ana was as unstable as its oxy-form, indicating that no stabilization (R----T conversion) takes place upon the deoxygenation of Hb Santa Ana. PMID- 3839773 TI - Hb Gainesville-GA or alpha 2 beta 2 46(CD5)Gly----Arg. PMID- 3839774 TI - Hemoglobin GuiZhou in Japan. PMID- 3839775 TI - Hb Savaria or alpha2 (49)(CE7)Ser----Arg beta2 in an indigenous female from Kenya. PMID- 3839776 TI - Hb Fort Worth or alpha2 27(B8)Glu----Gly beta2 in a black family from Canada. PMID- 3839777 TI - In vitro assessment of the oncogenic potential of nitroimidazole radiosensitizers. AB - Two hypoxic cell radiosensitizers, RSU-1069 and Ro-03-8799 were investigated for their in vitro cytotoxicity and ability to induce oncogenic transformation and sister chromatid exchanges in the C3H 10T1/2 cell system. Their effects were then compared to those of the clinically used sensitizer misonidazole. Equitoxic doses of Ro-03-8799 and RSU-1069 were approximately 3-fold and 150-fold less than misonidazole, respectively, with both agents exhibiting dose and contact time dependence for cell killing. Both sensitizers appeared no more oncogenic than misonidazole when administered at equitoxic dosages. At doses of equivalent sensitizing efficiencies relative to misonidazole, RSU-1069, but not Ro-03-8799, induced significantly higher transformation incidence. In conjunction with gamma irradiation, both Ro-03-8799 and misonidazole induced an additive transformation response. Preliminary studies also indicate that RSU-1069, at a concentration of 0.03 mM, induced significantly higher sister chromatid exchanges (SCE) per chromosome than either Ro-03-8799 or misonidazole at concentrations 30-fold higher. Although several earlier studies have indicated that RSU-1069 may be more efficient than misonidazole as an hypoxic cell sensitizer, the present findings suggest that it may also carry a higher risk of inducing tumors by itself at clinically relevant concentrations. PMID- 3839779 TI - A BASIC language computer program for intraocular lens power calculations. AB - I present a BASIC language computer program that can be used on a variety of home computers to calculate intraocular lens powers and print this information on a report that can be included with hospital or office records and easily read in the operating room. PMID- 3839778 TI - Secondary myelofibrosis in three dogs. AB - Myelofibrosis was diagnosed in 3 dogs. In each dog, there was evidence of concurrent bone marrow necrosis, suggesting that the myelofibrosis was a secondary change. This suggestion was supported by a lack of dysplastic changes in hematopoietic cells. Bone marrow necrosis in 2 of the dogs may have been the result of widespread malignancy. Reversal of the myelofibrosis in 1 dog suggested that myelofibrosis is not always a terminal disorder. PMID- 3839781 TI - Steffimycin C, a new member of the steffimycin anthracyclines. Isolation and structural characterization. AB - Mother liquors from steffimycin B crystallizations have been processed to yield steffimycin C, a new member of the steffimycin family of anthracyclines. It has been identified, using spectroscopic methods, as 10-deoxysteffimycin B. Steffimycin C has antibacterial activity only against Streptococcus pneumoniae. Whether steffimycin C is a precursor of steffimycin B or a metabolic reduction product is unknown at this time. PMID- 3839780 TI - Effects of AMSA, an antineoplastic agent, on spermatogenesis in the mouse. AB - The stages of spermatogenic cells killed by the single and fractionated administration of AMSA, an acridine derivative used in cancer chemotherapy, have been identified in the mouse. A wide range of doses, up to a total of 30 mg/kg, which is the LD50 for AMSA given in three daily injections, was employed. Survival of differentiating (types A1 through Intermediate) and stem spermatogonia was measured by sperm counts performed 29 and 56 days after treatment, respectively. The sensitivity of germ cells to AMSA at other stages of differentiation was determined by semiquantitative histologic analysis at 11 days after treatment. Significant killing of differentiating spermatogonia, types A2 through B, but only minor killing of stem cells and no toxicity to post spermatogonial stages were observed with all treatment schedules. This pattern of differential sensitivity can explain the temporary azoospermia observed in man during AMSA treatment, which was followed by a return to normal sperm counts after cessation of therapy. PMID- 3839782 TI - Biosynthesis of oxanthromicin. PMID- 3839783 TI - Studies on the isotetracenone antibiotics. I. Capoamycin, a new antitumor antibiotic. PMID- 3839784 TI - Studies on the isotetracenone antibiotics. II. Kerriamycins A, B and C, new antitumor antibiotics. PMID- 3839785 TI - IM8443T substance, an antitumor triene beta-lactone antibiotic. PMID- 3839786 TI - Some aspects of temporal coding for single-channel electrical stimulation of the cochlea. AB - Estimates of the useful frequency range for single-channel electrical stimulation of the cochlea range from 400 to 4000 Hz. Psychophysical studies in single channel implant patients are relevant not only to the practical problem of designing stimulation strategies, but also to questions of temporal processing of pitch in the normal auditory nervous system. Patients with single-channel extracochlear devices participated in several experiments involving stimuli differing in fine temporal structure. Stochastic pulse trains, in which the probability of pulse delivery (p) for a given cycle was less than 1.0, were readily discriminated from ordinary pulse trains. Frequency discrimination using stochastic pulse trains differing only in fine temporal structure (but identical average pulse rates) was as good as with ordinary pulse trains or sinusoids for P greater than or equal to 0.5, but deteriorated rapidly for P less than 0.5. Discrimination of triangular and trapezoidal waveforms from square waves was surprisingly good: rise-times (for 0 to maximum current) as low as 0.08 ms could be discriminated. Conversely, detection of jitter in pulse trains was almost an order of magnitude worse. The results show that frequency discrimination for single-channel electrical stimulation of the cochlea is based on discrimination of inter-pulse periods, and that pulse rates which would be unnatural for acoustically-evoked VIIIth nerve activity - up to 750 Hz - are more useful for coding mid-range frequencies than low-rate stochastic stimulations of normal VIIIth nerve firing patterns. The waveform discriminations reported would be obscured by low-pass filtering even at 2000 Hz, and probably depend on changes in relative synchrony among an array of VIIIth nerve units with different thresholds. In general, these results support the use of analog coding schemes with relatively large bandwidth. PMID- 3839787 TI - Regulation of increase in anastomotic blood flow following pulmonary arterial occlusion. AB - We have previously shown that there is an acute increase in anastomotic bronchial blood flow (Qbr) after pulmonary arterial obstruction in dogs. We examined the role of arachidonic acid metabolites in mediating this increase. The left lower lobe (LLL) was isolated and perfused (zone 2) with autologous blood in open chested anesthetized dogs (n = 19). Qbr was measured from the amount of blood that overflowed from the closed vascular circuit of the suspended LLL and changes in its weight. In the control animals, there was a prompt and significant increase in Qbr following pulmonary arterial obstruction. Pretreatment with indomethacin (n = 6) or sodium salicylate (n = 4) almost completely blocked this rise in Qbr. Following pulmonary arterial occlusion, there was a rise in both thromboxane and a prostacyclin metabolite (6-keto-PGF1 alpha) in the blood of the pulmonary circulation of the LLL, although the 6-keto-PGF1 alpha rose relatively more. Pretreatment with indomethacin caused a fall in both thromboxane and prostacyclin levels (n = 3), which no longer rose after pulmonary arterial occlusion. These findings suggested that the balance of the vasodilator (prostacyclin) and vasoconstrictor (thromboxane) prostaglandins may play an important role in mediating the rise in Qbr that follows pulmonary arterial obstruction. PMID- 3839788 TI - Relation of prostanoids to strength of hypoxic vasoconstriction in dogs with lobar atelectasis. AB - In dogs with acute lobar atelectasis, meclofenamate administration decreases shunt fraction uniformly and moderately without abolishing the wide variation of strength of hypoxic vasoconstriction and resultant variability of shunt fraction (J. Appl. Physiol. 54: 284-289, 1983). To further assess the role of prostanoids, we measured prostanoid metabolites as well as shunt fraction and pressor response to alveolar hypoxia. In six intact anesthetized dogs with acute left lower lobe atelectasis, shunt fraction during normoxia was measured with SF6. Levels of 6 ketoprostaglandin F1 alpha (6-keto-PGF1 alpha) and thromboxane B2 in arterial, mixed venous, and left lower lobe venous blood were measured with the double antibody radioimmunoassay technique. Ten percent O2 was administered to assess pressor response. Twenty-one percent O2 was restarted, meclofenamate was administered, and measurements were repeated 30 min later. Atelectasis did not elevate levels of prostanoid metabolites. 6-Keto-PGF1 alpha averaged 88 +/- 65 pg/ml prior to atelectasis and 81 +/- 73 pg/ml after atelectasis (F = 0.7, P = NS). Likewise, thromboxane B2 values were normal. No transpulmonary concentration differences were found. 6-Keto-PGF1 alpha did not correlate with shunt values, which ranged from 14 to 35% (mean 21%). Meclofenamate effectively blocked cyclooxygenase, as demonstrated by decreases in prostanoid metabolite levels. It seems likely that in dogs with acute atelectasis prostacyclin localized in the pulmonary vasculature decreases strength of hypoxic vasoconstriction modestly and uniformly without raising blood levels of prostacyclin metabolite. PMID- 3839789 TI - Role of surfactant in the alveolus. PMID- 3839790 TI - Macrophage activation by PAF incorporated into dipalmitoylphosphatidylcholine cholesterol liposomes. AB - The phospholipid mediator, platelet activating factor (PAF: 1-O-alkyl-2-O-acetyl sn-glycero-3-phosphocholine), was recently reported to activate macrophage monocyte cells as well as neutrophils or platelets. PAF was incorporated into dipalmitoylphosphatidylcholine-cholesterol liposomes, and their effect on guinea pig peritoneal macrophages was examined. PAF incorporated into liposomes was found to activate macrophages much more potently than PAF in the free form, whereas the effect of PAF in liposome on platelets was weaker than that of PAF in the free form. A large difference between PAF in liposomes and PAF in the free form was observed in the rate of degradation of PAF during incubation with macrophages. This rapid degradation of PAF in the free form may partially explain the poor activation by PAF of macrophages. PMID- 3839791 TI - Tb3+ binding to bovine prothrombin and bovine prothrombin fragment 1. AB - The binding of Tb3+ to bovine prothrombin and the amino-terminal 156 residues of prothrombin (F-1) was studied. On the basis of various Tb3+ emission properties, three classes of Tb3+-binding sites were described. The first class contained three high affinity sites in the F-1 region. These sites were filled noncooperatively and were saturated with Tb3+ before the other classes of sites started to fill. Ho3+ quenching of Tb3+ emission showed that these sites were in close proximity to one another (estimated distances 6-12 A). The second class of sites contained three lower affinity sites, also in the F-1 region. These sites bound Tb3+ in a stoichiometric manner and saturated prior to metal binding to the final class of sites. The number of protein ligands binding Tb3+ in the high affinity sites decreased as this second set of sites was filled. Ho3+ quenching of Tb3+ emission suggested that these sites were closely spaced and/or close to the first set of sites. The third class of sites contained 4-6 low affinity sites unique to prothrombin (not in the F-1 region). These sites were not studied extensively, but Tb3+ did not appear to bind stoichiometrically and did not saturate these sites in a manner similar to the other two classes of sites. The emission properties of Tb3+ bound to F-1 were different in KCl versus NaCl containing buffer while the emission properties of Tb3+ bound to prothrombin were not. Optimum conditions for studying lanthanide binding to F-1 (i.e. when Tb3+ bound to F-1 showed emission properties similar to Tb3+ bound to prothrombin) were when F-1 experiments were done at low F-1 concentrations in buffer containing 0.1 M KCl. PMID- 3839792 TI - Protein C in bovine plasma after warfarin treatment. Purification, partial characterization, and beta-hydroxyaspartic acid content. AB - Protein C was purified from the plasma of a cow treated with the vitamin K antagonist warfarin. The purified protein appeared not to bind Ca2+ ions in contrast to protein C from an untreated animal. The gamma-carboxyglutamic acid content of the abnormal protein C was reduced to approximately 10% of normal, whereas the beta-hydroxyaspartic acid content was only slightly decreased, suggesting that vitamin K is not involved in the postribosomal hydroxylation of the aspartic acid residue in position 71 of the light chain of protein C. The abnormal and normal proteins were activated at the same rates by thrombin, but normal protein C was more rapidly activated by the thrombin-thrombomodulin complex. Compared to normal protein C, the abnormal one had virtually no anticoagulant activity. PMID- 3839794 TI - Sequence and evolution of guinea pig preproinsulin DNA. AB - Guinea pig insulin exhibits an unusually high degree of divergence from the conserved insulins of other mammals. cDNA clones encoding guinea pig preproinsulin were isolated, and their nucleic acid sequences were determined. Comparisons of the nucleic acid sequence and its predicted amino acid sequence with sequences encoding insulins of other species revealed that the gene encoding guinea pig preproinsulin evolved from the same ancestral mammalian gene as other known mammalian insulin genes. PMID- 3839793 TI - The structure of prothrombin fragment 1 at 3.5-A resolution. AB - The structure of prothrombin fragment 1 has been determined at 3.5-A resolution by multiple isomorphous replacement methods with four heavy atom derivatives. The final average figure of merit is 0.72. There is a large cylindrical solvent region with an average diameter of 35-40 A along the entire length of the c axis (85 A) centered at about x = y = 1/2. The connected density forming the wall of this channel is not of sufficient extent to account for the 156 residues of fragment 1 and the two accompanying carbohydrate chains totaling 5000 in molecular weight. Deglycosylated fragment 1 crystallizes isomorphously with fragment 1, and a difference map between the two revealed that the sugar chains are severely disordered and reside in the solvent channel. Although the disordered carbohydrate and the complexity of five disulfides in a 126-residue sequence have hampered the complete tracing of the peptide chain, two-thirds of the molecule has been accounted for in the form of an unusually oblate ellipsoid of about 15 X 30 X 35 A. The folding of the molecule has little secondary structure (one alpha-helix (7%), 20% beta-structure) in agreement with dichroism measurements and one of the points of carbohydrate attachment is suggested from the deglycosylated difference map. PMID- 3839795 TI - Quantitative calculations of temporomandibular joint reaction forces--I. The importance of the magnitude of the jaw muscle forces. AB - The effect of measurement errors on quantitative calculation of temporomandibular joint reaction force was investigated in a two-dimensional, two-muscle model. A computer program using the model incremented the magnitude of the bite force and muscle forces and the lengths of their moment arms, and calculated the joint reaction force at each increment. Computation of the joint reaction force is most sensitive to the relative lengths of the bite force and muscle forces moment arms. Absolute values for each muscle force are not required and errors in the magnitudes of the muscle forces have only a minor effect on calculation of the total joint reaction force. PMID- 3839796 TI - Prostaglandin inhibition and the rate of recovery after arthroscopic meniscectomy. A randomised double-blind prospective study. AB - In a double-blind, randomised, prospective study of 139 patients undergoing arthroscopic meniscectomy, those receiving a prostaglandin inhibitor (naproxen sodium) had significantly less pain, less synovitis and less effusion. They had significantly more rapid return of movement and of quadriceps function; their return to work and to sport also was significantly faster. It is recommended that, provided there are no contraindications, a prostaglandin inhibitor should be used after arthroscopic procedures. PMID- 3839797 TI - Five mouse tubulin isotypes and their regulated expression during development. AB - We describe five mouse tubulin cloned cDNAs, two (M alpha 1 and M alpha 2) that encode alpha-tubulin and three (M beta 2, M beta 4, and M beta 5) that encode beta-tubulin. The sequence of these clones reveals that each represents a distinct gene product. Within the sequence common to the two alpha-tubulin cDNAs, the encoded amino acids are identical, though the 3' noncoding regions are wholly dissimilar. In contrast, the three beta-tubulin cDNAs show considerable carboxy terminal heterogeneity. Two of the beta-tubulin isotypes defined by the cloned sequences are absolutely conserved between mouse and human, and all three beta tubulin isotypes are conserved between mouse and rat. This result implies the existence of selective constraints that have maintained sequence identity after species divergence. This conclusion is reinforced by the near identity between a third mouse beta-tubulin isotype and a chicken beta-tubulin isotype. The significance of the interspecies conservation of tubulin isotypes is discussed in relationship to microtubule function. We have used non-cross-hybridizing 3' noncoding region probes from the five cloned mouse tubulin cDNAs to study the developmental expression of each isotype in various mouse tissues. M alpha 1 and M beta 2 are expressed in an approximately coordinate fashion, and their transcripts are most abundant in brain and lung. M alpha 2 and M beta 5 are ubiquitously expressed and to a similar extent in each tissue, with the greatest abundance in spleen, thymus, and immature brain. In contrast, M beta 4 is expressed exclusively in brain. Whereas the expression of the latter isotype increases dramatically during postnatal development, transcripts from all four other tubulin genes decline from maximum levels at or before birth. Tissue specific development changes in the abundance of tubulin isotype-specific mRNAs are discussed in relationship to organogenesis in the mouse. PMID- 3839798 TI - Responses of cultured cardiac myocytes to lysosomotropic compounds and methylated amino acids. AB - Cardiac myocytes whose lysosomes had been pre-labelled with acridine orange were exposed to either L-amino acid methyl esters (L-leucine or methionine methyl ester) or to 'lysosomotropic' weak bases (chloroquine, methylamine, and NH4Cl) for 1 h. Both types of interventions dilated lysosomes equally and inhibited proteolysis to varying degrees. The weak bases produced no apparent alterations in the acridine orange staining, whereas the methylated amino acids induced a marked redistribution of the fluorescent dye from lysosomes into the myoplasm, suggesting that they may have provoked a change in lysosomal membrane permeability. A brief exposure to weak bases failed to enhance acid proteinase secretion into the culture medium but apparently inactivated cellular cathepsin B activity. In contrast, methylated amino acids induced no alterations in acid proteinase activity or the cellular distribution of the two proteolytic enzymes. Lastly, weak bases markedly elevated intralysosomal pH as measured with fluorescein dextran, while only modest rises were observed after amino acid methyl ester treatment. The present observations imply that amino acid methyl esters represent a new class of reagents with actions distinctly different from those of chloroquine and NH4Cl, and they may provide a unique and valuable means of studying secondary lysosomal function in cell culture. PMID- 3839799 TI - Characterization of lacto-N-hexaose and two fucosylated derivatives from human milk by high-performance liquid chromatography and proton NMR spectroscopy. AB - The branched hexasaccharide whose trivial name is lacto-N-hexaose (LNH) as well as a mono- and a difuco-derivative were isolated from human breast milk of a Lewis a positive donor by high-performance liquid chromatography (HPLC). Reversed phase HPLC on C18 columns which have been used previously in our laboratory for successful separations of the smaller milk oligosaccharides were not effective in this system. However, normal-phase HPLC on an amino-bonded silica column (Varian AX-5) gave both analytical and preparative separations. The identity of the LNH core structure was verified both by HPLC and by NMR spectroscopy of the fucosidase digestion products of the fucosylated oligosaccharides. LNH was identified by NMR spectroscopy of the reduced and acetylated derivative whose high field spectrum has been previously reported. The positions of fucosylation of beta-GlcNAc residues were determined by the characteristic chemical shifts of the resonances assigned to alpha-fucose H1 and H5. The assignment of many of the resonances to sugar ring protons was possible using difference decoupling methods. The observation of nuclear Overhauser effects between the anomeric protons and the aglycone protons of adjacent residues confirmed the assignment of the glycosidic linkages. PMID- 3839800 TI - Pathophysiology of spontaneous hypercalciuria in laboratory rats. Role of deranged vitamin D metabolism. AB - Recent data suggest a causal role of deranged 1,25(OH)2D metabolism in the syndrome of idiopathic hypercalciuria. To test this hypothesis, we evaluated if vitamin D availability and/or increased serum 1,25(OH)2D were critical for the expression of hypercalciuria in laboratory rats. Ca balance, serum 25OHD3, and 1,25(OH)2D3 were studied in D-deprived (-D) and D-repleted (+D) male progeny (p) born to normocalciuric (NC) and spontaneously hypercalciuric (SH) rats. 7 of the 14 pSH and 2 of 21 pNC had SH, which was defined as urinary Ca greater than two standard deviations above the mean of values for control animals on days 5 and 6 of a low Ca +D diet (1.19 vs. 0.58 mg/d, P less than 0.001). Fasting serum Ca and 25OHD3 were similar to control. Serum 1,25(OH)2D3 was elevated in these nine SH rats (232 vs. 145 pg/ml, P less than 0.005). However, during vitamin D deprivation, their Ca excretion was also increased (1.53 vs. 0.45 mg/d, P less than 0.001), despite comparably reduced serum 1,25(OH)2D3 (102 vs. 106 pg/ml) and undetectable serum 25OHD3. Net intestinal Ca absorption on a low Ca diet was comparable during D repletion (-0.75 vs. -0.82 mg/d) or D deprivation (-0.80 vs. 2.15 mg/d), excluding primary hyperabsorption as the mediator of the hypercalciuria. Mild hypophosphatemia was present in SH on +D (5.8 vs. 6.9 mg/dl, P less than 0.005) and -D diets (6.2 vs. 7.9 mg/dl, P less than 0.005), and was associated with higher rates of cyclic adenosine monophosphate excretion (32.8 vs. 26.9 and 48.5 vs. 41.0 nmol/mg of creatinine, respectively). Spontaneous hypercalciuria is therefore dissociable from increased Ca absorption, serum levels of 25OHD3, or 1,25(OH)2D3. The data are most compatible with the hypothesis of a renal Ca leak which stimulates parathyroid hormone activity and increases serum 1,25(OH)2D3, if provided adequate 25OHD3 as substrate. PMID- 3839803 TI - Microcomputer program for cell counting. PMID- 3839801 TI - Evidence for alteration of the vitamin D-endocrine system in blacks. AB - As compared with values in white subjects, bone mass is known to be increased and urinary calcium to be diminished in black individuals. To evaluate the possibility that these changes are associated with alterations in the vitamin D endocrine system, an investigation was performed in 12 black subjects, 7 men and 5 women, and 14 white subjects, 8 men and 6 women, ranging in age from 20 to 35 yr. All of them were hospitalized on a metabolic ward and were given a constant daily diet containing 400 mg of calcium, 900 mg of phosphorus, and 110 meq of sodium. Whereas mean serum calcium, ionized calcium, and phosphate were the same in the two groups, mean serum immunoreactive parathyroid hormone (350 +/- 34 vs. 225 +/- 26 pg/ml, P less than 0.01) and mean serum 1,25-dihydroxyvitamin D (1,25(OH)2D) (41 +/- 3 vs. 29 +/- 2 pg/ml, P less than 0.01) were significantly higher, and mean serum 25-hydroxy-vitamin D (25-OHD) was significantly lower in the blacks than in the whites (6 +/- 1 vs. 20 +/- 2 ng/ml, P less than 0.001). Mean urinary sodium and 24-h creatinine clearance were the same in the two groups, whereas mean urinary calcium was significantly lower (101 +/- 14 vs. 166 +/- 13 mg/d, P less than 0.01) and mean urinary cyclic AMP was significantly higher (3.11 +/- 0.47 vs. 1.84 +/- 0.25 nM/dl glomerular filtrate, P less than 0.01) in the blacks. Further, the blacks excreted an intravenous calcium load, 15 mg/kg body weight, as efficiently as the whites (49 +/- 3 vs. 53 +/- 3%, NS). Mean serum Gla protein was lower in blacks than in whites (14 +/- 2 vs. 24 +/- 3 ng/ml, P less than 0.02), and increased significantly in both groups in response to 1,25(OH)2D3, 4 micrograms/d for 4 d. There was a blunted response of urinary calcium to 1,25(OH)2D3 in the blacks, and mean serum calcium did not change. The results indicate that alteration of the vitamin D-endocrine system with enhanced renal tubular reabsorption of calcium and increased circulating 1,25(OH)2D as a result of secondary hyperparathyroidism may contribute to the increased bone mass in blacks. Their low serum 25-OHD is attributed to diminished synthesis of vitamin D in the skin because of increased pigment. PMID- 3839802 TI - Identification of a point mutation in the adenosine deaminase gene responsible for immunodeficiency. AB - Deficiency of adenosine deaminase (ADA) is the cause of an autosomal recessive form of immunodeficiency. We sought to define, at a molecular level, the mutations responsible for ADA deficiency in the cell line GM-1715, derived from an immunodeficient patient. Full-length complementary DNA (cDNA) for ADA was synthesized and cloned from the cell line. Sequence analysis of the clones revealed a point mutation in codon 101 (CGG to CAG) that predicts an amino acid change from arginine to glutamine. Southern blot analysis, based on silent polymorphisms in the cDNA sequence, indicated that only one of the defective alleles of the GM-1715 line had been sequenced. The mutation that was identified appears to be responsible for the loss of function in this allele, since the predicted primary structure of the enzyme is otherwise entirely normal. PMID- 3839805 TI - Radiotherapy of severe ophthalmic Graves' disease. AB - The effects of orbital irradiation on Ophthalmic Graves' Disease (OGD) were evaluated in 24 patients. All patients were irradiated after a median duration of eye symptoms of 12 months (range 3-36 months). Irradiation therapy was performed for loss of visual acuity, progressive diplopia and/or keratitis due to recent progression of eye symptoms. During a follow up period of 2-4.5 years, in 11 patients after irradiation, a mean decrease in proptosis oculi of 5.1 mm was found while 8 of these patients showed a mean increase in visual acuity of 0.26. Apparently, a decrease of activity of the inflammatory process in retrobulbar tissues can be achieved after irradiation, over a longer period of time in many patients. Furthermore concomitantly administered corticosteroids could be tapered off completely in all patients. Treatment of severe OGD of recent onset with irradiation, in combination with a short course of prednisone is very effective. This study also shows that prednisone treatment alone is not very successful because of the high recurrence rate of eye sings after decrease of the dose and the many side effects of the drug. PMID- 3839804 TI - Interaction of protein percent with caloric density and protein source for lactating cows. AB - Experiment 1 was to test effect of three ratios of energy to protein in complete mixed diets for 36 lactating cows in three, 28-d periods. Energy was varied with cottonseed hulls, pelleted ground corrugated boxes, and a mixture of the two. Crude protein was varied with soybean meal to give energy:crude protein of 5.7, 5.0, and 4.6 for each energy amount. Cottonseed meal was compared with soybean meal in corrugated box diets. Feed intake was much higher with cottonseed hulls, and appreciable feedlot bloat resulted from pelleted ground corrugated box diets. Data adjusted to equal feed intake showed significant effect of energy to crude protein ratio on milk yield and improved digestion of organic matter with soybean meal vs. cottonseed meal. Experiment 2 tested the hypothesis that lactating cows consuming high-protein alfalfa may benefit from supplemental protein. Diets were 50% forage. Six diets were 14 or 18% crude protein in three ratios of alfalfa hay to corn silage (0:100, 50:50, 100:0). Additional corn silage diets were to compare: 14 versus 18% protein from distiller's dried grains with solubles only and with .5 or .9% urea (four diets); two 14% protein diets compared .6% added potassium chloride with or without .5% urea. Thirty-six Holstein cows in early lactation received one of the 12 diets in each of three 28-d periods. Distiller's grains with solubles markedly depressed milk yield (2.2 kg/d) and milk protein (.22%); heat damage of distiller's grains was evident. Protein interacted with alfalfa so gain in milk from 18 versus 14% increased from .55 to 1.36 to 2.66 kg/d as alfalfa changed from 0 to 50 to 100%. Thus, crude protein of alfalfa was not as effective as that from soybean meal in supporting milk yield. PMID- 3839806 TI - Identical RT1 class II molecules are expressed by rat RT1m and RT1c haplotypes. AB - The RT1m haplotype of MNR rats has been suggested to be a recombinant RT1 haplotype inheriting RT1.A (class I) alleles from RT1a (DA) and RT1.B (class II) alleles from RT1c (AUG). Additional serologic and biochemical assays, however, have suggested that RT1m and RT1c share a single identical RT1.B molecule, although differing in the expression of the second RT1.B molecule. To resolve this contradiction, RT1.B class II molecules, comparable to I-A and I-E molecules in mice, expressed by the RT1c and RT1m haplotypes were immunoprecipitated by cross-reactive mouse anti-Ia antibodies and were compared by two-dimensional gel electrophoresis and by high pressure liquid chromatographic separation of tryptic peptides. Respective subunits expressed by the two haplotypes co-migrate on two dimensional gels and have identical tryptic peptide maps. The results at the protein level were confirmed at the DNA level by Southern blot analysis of MNR and AUG genomic DNA. Identical restriction fragments associated with the RT1m and RT1c haplotypes hybridized with each of the DC1 beta, DR alpha, and DR beta cDNA probes. The results at both the protein and DNA levels suggest that the RT1m and RT1c haplotypes share identical expressed alleles at the RT1.Ba, RT1.Bb, RT1.Bc, and RT1.Bd loci. PMID- 3839807 TI - Positive serological tests for infectious mononucleosis in a patient with Mediterranean spotted fever. AB - The Monospot test is an accurate and reliable test for infectious mononucleosis. False positive reactions have been seldom recorded. We report the conversion of the Monospot test from negative to positive during the course of Mediterranean spotted fever. Changes in the titre of the Paul-Bunnell test were observed also. The importance of measuring IgM antibodies as part of the routine investigation of infectious diseases is emphasised. PMID- 3839808 TI - A comparative evaluation of levamisole in leprosy. AB - Ninety adult leprosy patients attending the skin outpatient department of Institute Hospital of Varanasi, India, were selected for the study. A group of thirty patients including 10 cases of lepromatous, 10 of borderline and 10 cases in reaction of which 5 were of type 1 and 5 of type II reaction were treated with levamisole and DDS. Levamisole was given in the doses of 150 mg. daily for three consecutive days which was repeated after every 12 days. The effects were compared with two similar groups receiving clofazimine plus DDS and DDS alone respectively for six months. It was observed that levamisole was useful in bringing down both the types of reactions in a period shorter than required by clofazimine. Clinical improvement in non-reaction cases was found to be similar in all the three groups. Minor side effects were also seen with levamisole and clofazimine in some cases. PMID- 3839809 TI - L.D.H. isoenzymes sub-unit ratio in leprosy and the effect of clofazimine treatment on L.D.H. isoenzymes sub-unit. AB - The clinical material for our studies of serum total LDH activity and LDH isoenzymes in leprosy included 255 patients consisting of Tuberculoid (74), Lepromatous leprosy (116), and Lepromatous leprosy with lepra reaction (65). 20 patients with suspected DDS resistance and repeated attacks of lepra reactions were selected for Clofazimine studies. All leprosy patients exhibited higher total LDH activity as compared to normals. M/H ratio was significantly increased in patients of Lepromatous leprosy and correlated closely with the clinical severity and advancement of disease. Tuberculoid leprosy patients showed values close to normals. Hence M/H ratio could demarcate two polar types of leprosy i.e. Tuberculoid and Lepromatous leprosy. Clofazimine treatment over a period of one year in patients with suspected DDS resistance and repeated attacks of lepra reaction decreased total LDH activity and M/H ratio considerably. Fall in M/H ratio during Clofazimine treatment could be attributed to the clearance of 'M' subunits by the drug due to removal of blockade of R.E.S. system produced by lepra bacilli. PMID- 3839810 TI - Epidemiological and clinical aspects of leprosy in Indian armed forces. AB - Epidemiological and clinical aspects of leprosy in 1911 cases of the disease in armed forces personnel were studied. Typewise distribution of cases was Tuberculoid 53.53%, Lepromatous 20.57%, Indeterminate 8.74%, Borderline 11.67% and Polyneuritic 5.49%. Maximum leprosy cases occurred in those belonging to Uttar Pradesh 17.11%. Maximum number of cases were detected (88.55%) in age group 20-39 years. Incidence of leprosy increased with increased years of service. 11.82% patients were illiterate. 89.85% patients earned Rs. 200 to 499 per month. 56.08% patients had no landed property. Houses of 47.29% cases were located in congested areas. 68.23% patients had to support larger families. In 95.94% cases no family members were examined for leprosy. Diet, smoking and alcohol appear to have had no relation to disease in cases studied. Clinical presentation of cases was classical and typespecific. Skin eruption and loss of sensation were the commonest symptoms. Leprosy lesions were detected on almost all parts of body. Thermal sensation was the commonest modality lost. Ulnar, lateral popliteal and greater auricular were the frequently affected nerves. Amongst complications paralytic deformities were common (16.09%). 545 complications were detected in 1911 cases. While 84.29% patients had put in more than 4 years of service, the source of infection was known only in 0.57% positively (intrafamilial). PMID- 3839812 TI - Arteriography in leprosy. AB - Arterial pattern of hands and feet-vessels was studied in 26 patients of leprosy by percutaneous arteriography, and in these cases muscle biopsy was also done. The vessels in leprosy were showing smooth tapering, absence of collaterals, occlusion of the artery and rippling (tortousity) of vessels. Such abnormal pictures were seen in all the arteriograms studied, and in 82% of of cases moderate to severe vascular changes were seen. Decreased blood flow through the arteries in the distal part of the limb leading to ischaemia, is probably the cause for deformity and/or ulceration in the leprosy. Presence of vascular thickening, perivascular granuloma and lymphocytic infiltration in the muscle may be possible explanation for angiographic findings and is felt to be related to trophic ulceration. PMID- 3839813 TI - Evaluation of effectiveness of clofazimine therapy. I. Monitoring of absorption of clofazimine from gastrointestinal tract. AB - The quantity of clofazimine absorbed from the gastrointestinal tract when administered to lepromatous leprosy patients at varying single doses of 600 mg., 400 mg., 300 mg., and 100 mg. has been worked out by determining the amount of clofazimine present in total faecal excreta. Except in 100 mg. dose where the percentage absorption was 62.5 +/- 17 in all other case the values were around 45%. The efficacy of daily administration of 100 mg. clofazimine is discussed in this first article. PMID- 3839811 TI - Surveillance in leprosy. AB - Surveillance in leprosy forms an integral part of leprosy control activities. Usually contact and school surveys are done annually and general population surveys are done once every 3-5 years. Data is presented which suggest that frequently done surveys may not be cost effective as a means of case detection. Carefully done general surveys once every 3 years, covering contacts as well as school children may be adequate and more cost effective in endemic areas, whereas contact surveys, surveys of high risk groups and contact tracing, may be more relevent in low endemic areas. PMID- 3839814 TI - A study of relapse in non lepromatous and intermediate groups of leprosy. AB - Dapsone has been used as a monotherapy and in well organised control units, the prevalence of leprosy has come down. The relapse rates presented in this communication are quite low compared with those reported by various authors quoted in this paper. Relapse rates appear to remain steady at about 5/1000 for each following year after R.F.C. for 7 years. This relapse rate does not appear to be related to regularity of treatment. The relapse rate appears that longer the duration of treatment, the earlier relapse due to severity of the disease of those who had longer treatment. Health education for R.F.C. cases on signs of relapse is a must before they are declared R.F.C. The levels of Sulphone in the blood remain above MIC for as much as ten days after the last dose and therefore Dapsone allows self-administration. It is expected that with the introduction of bacteriocidal drugs in the treatment of paucibacillary leprosy, the relapse rates would go down. As observed from a study conducted in Jalma, maintenance treatment as advocated by the NLCP (1964) and WHO (1970) does not seem to be necessary. The necessity of such maintenance treatment may be obviated with the use of multi drug regimen in paucibacillary leprosy. This would enable a large number of cases to be released from control thereby reducing patient load considerably and making the supervised treatment of multibacillary cases more easy. PMID- 3839815 TI - Multi-drug therapy for multi-bacillary cases in Wardha district, Maharashtra, India. AB - 2786 infectious patients of Wardha district are now receiving multi-drug therapy. 67% of those who have received 2 years' treatment have become bacteriologically negative. Side-effects due to drugs have been comparatively few. In the majority of patients who had such side-effects, they have been mild. PMID- 3839817 TI - Neuropathic plantar ulceration. AB - Management of 111 trophic plantar ulcers existing in 100 patients of leprosy have been reviewed. Male preponderance with 4th and 5th decade of life predilection was observed. Most of the patients were of lepromatous type. Ulcers were grouped into superficial and deep. They were treated by various methods viz. plaster cast alone and in combination with curettage, posterior tibial neurovascular decompression and metatarsectomy. It was observed that ulcers heal faster if conservative plaster cast treatment is clubbed with surgical treatment of the ulcer. Indications of various surgical methods is defined. Role of proper footwear in the management of plantar ulcers has been emphasized. PMID- 3839816 TI - Borderline reactions treated with clofazimine and corticosteroids. AB - Thirtyfour cases of Borderline Reaction were treated with Clofazimine and corticosteroids. The clinical findings including sensory and motor assessments and skin smears were made before treatment and again when the reaction subsided, subject to a minimum period of one year. These findings are analysed and discussed. PMID- 3839819 TI - Pattern of deformities/disabilities in urban leprosy. PMID- 3839818 TI - Deformities in leprosy patients attending urban leprosy clinic at Varanasi. AB - Analysis of records of urban leprosy clinic of the University Hospital, Varanasi for deformities was done for the years 1979 to 83. Gross deformity rate was 3.73 percent only. The majority of cases of deformity were in borderline type of leprosy. The commonest deformity was claw hand. It is discussed that dapsone treatment does not increase the chance of deformity. The rate, however, increased with age. PMID- 3839820 TI - The dapsone syndrome. A case report. PMID- 3839822 TI - Immuno-stimulatory effect of levamisole in borderline leprosy cases. AB - Eleven cases of borderline-borderline leprosy were subjected to levamisole therapy for 3 months. Levamisole was given 150 mg/day on three consecutive days every fortnight along with dapsone (DDS). Immuno-stimulation was assessed by lepromin test using Lepromin-A supplied by W.H.O. containing 4.0 X 10(7) bacilli per milli litre. It was found that there was statistically significant change in lepromin reaction after levamisole therapy. PMID- 3839821 TI - Extensor pollicis brevis deviation graft operation in case of Z-deformity of the thumb in ulnar palsy--a preliminary case report. AB - This new procedure is described as an analogous operation to Extensor Diversion Graft Operation for correction of claw fingers (Srinivasan H.) (5). The procedure is found useful to stabilise the metacarpophalangeal joint of the thumb preventing or correcting Z-deformity and weakness of the pinch showing many advantages compared to other procedures. A single case is shown as a preliminary report. PMID- 3839823 TI - On urine spot test for dapsone intake. PMID- 3839824 TI - Who chemotherapeutic regimen for pauci-bacillary cases. PMID- 3839825 TI - Influence of levamisole on lymphocytes and M. leprae in mice. AB - Normal uninfected (N) and M. leprae infected mice (NI) were given levamisole in the dose of 2.5 mg/kg body weight. The animals were observed over a period of nine months for bacillary load, T and B cell counts and blast transformation with PHA. Significant increase in B cell counts was observed in the levamisole treated normal (NL) compared to normal control (N) group. T cell counts and blast transformation, however, remained unaffected. However, T-cell counts and blast transformation improved significantly in the infected and levamisole treated (NIL) as compared to the infected group (NI) not given levamisole. Bacillary loads remained unaltered in both, the infected (NI) and levamisole treated (NIL) group. PMID- 3839826 TI - Immunomodulation with corticosteroids and levamisole in leprosy as gauged by in vivo lepromin and in vitro CMI responses. AB - Corticosteroids and Levamisole are known to be immuno suppressive and immuno stimulating agents respectively. Their effects on polar types of leprosy, tuberculoid and lepromatous have been studied using in vivo lepromin and in vitro lymphocyte count, rosette formation, L.T.T. and L.M.I.T. parameters. Immunosuppressive effect of corticosteroids on tuberculoid leprosy is marked with reduced and negative lepromin sensitivity but same does not hold true with other in vitro C.M.I. tests. Similar results are obtained with levamisole exhibiting its ineffectiveness in lepromin conversion in lepromatous cases although some improvement is observed in other in vitro C.M.I. tests. Evaluation of the results showed: lack of correlation between in vivo lepromin and in vitro other C.M.I. parameters with corticosteroids and levamisole lepromin sensitivity has some unknown influence other than thymic factors, prolonged corticosteroid therapy may produce permanent immunosuppression in tuberculoid cases making them more vulnerable towards lepromatous pole and lepromin sensitivity is more reliable, stable and easy to perform. PMID- 3839827 TI - First lesion in experimental armadillo leprosy. AB - Eighteen armadillos were infected intravenously with 10(8) M. leprae and 10 intracutaneously with 10(7) M. leprae. Among those which developed disseminated disease, a nodule at the site of inoculation was the first lesion noticed in 14 of the 16 infected intravenously and 4 of the 4 infected intradermally. It is possible that in human leprosy the first sign of infection is localized proliferation of M. leprae at the site of entry, and even nodule formation in lepromatous patients. It may be important to search for asymptomatic swelling or keloid-like lesions in skin or in nasal mucosa while screening a population for early leprosy. PMID- 3839828 TI - Hepatitis and multi-drug therapy in leprosy with special reference to prothionamide. AB - Hepatotoxicity in two drug regimens was studied at Central Leprosy Teaching and Research Institute, Chengalpattu (Tamil Nadu) during 1983-84. In 'P' regimen prothionamide 350 mg daily, dapsone 100 mg daily and rifampicin 600 mg at monthly intervals were given. In' C' regimen-dapsone 100 mg daily, rifampicin 600 mg once a month and clofazimine 300 mg once a month and 100 mg alternate day were given. Trial was started with fifty multibacillary adult leprosy patients in each group. Enzymatic hepatic dysfunction was noted in 52-58 per cent of the cases even before the therapy was started. In 'P' regimen, four cases of clinical jaundice and six cases of high bilirubinaemia was noticed during the trial as against two cases each of clinical jaundice and high bilirubinaemia in 'C regimen. Of the two cases of clinical jaundice in 'C' regimen, one turned out to be a case of HBV infection. The study which is in progress, indicated higher hepatotoxicity in 'P' regimen which is probably explained by the simultaneous use of two hepatotoxic drugs. Viral hepatitis is endemic in this area and might have aggravated the hepatotoxicity observed. PMID- 3839829 TI - Prothionamide and dapsone therapy in leprosy--a clinical study. AB - Combined therapy with prothionamide and dapsone was instituted in fifteen active untreated lepromatous leprosy cases for a period of 18 months. Clinical improvement was good with attainment of zero morphological index in about 66% cases. Bacteriological improvement was rather unsatisfactory as one case only reached zero level. Side effects were observed in few cases necessitating withdrawal of combined therapy and patients' prothionamide compliance was rather unimpressive. PMID- 3839830 TI - In vitro detection of endothelial cell damage using 2-deoxy-D-3H-glucose: comparison with chromium 51, 3H-leucine, 3H-adenine, and lactate dehydrogenase. AB - To develop a sensitive in vitro assay for detecting endothelial cell damage, we radiolabeled endothelial cell monolayers with tracer amounts of 2-deoxy-D-[1-3H] glucose (3HDOG). We damaged identical cohorts of endothelial cells radiolabeled with 3HDOG or chromium 51 by exposing monolayers to toxic oxygen radicals generated by xanthine-xanthine oxidase or phorbol myristate acetate (PMA) activated polymorphonuclear leukocytes (PMNs), a surface active agent (Triton X 100), and anti-HLA antibodies and complement. With each mechanism of injury, the 3HDOG assay detected significant (P less than 0.01) endothelial cell damage at lower concentrations of the injurious agent than the 51Cr assay. When endothelial monolayers were damaged by xanthine-xanthine oxidase or PMA-activated PMNs, efflux of 3HDOG was reduced (range 71% to 94% reduction) by superoxide dismutase and catalase, indicating that efflux of 3HDOG was mediated by toxic oxygen radicals. When monolayers were damaged with xanthine oxidase in the absence of glucose, a much lower concentration of xanthine oxidase was required to initiate efflux of 3HDOG as compared with xanthine oxidase injury in the presence of glucose. Additional studies compared the 3HDOG assay with 3H-adenine, 3H-leucine, and lactate dehydrogenase (LDH) release when endothelial cells were exposed to toxic oxygen radicals generated by PMA-activated PMNs and xanthine-xanthine oxidase. Again, the 3HDOG assay was more sensitive in detecting in vitro endothelial cell damage. We conclude that the 3HDOG assay is more sensitive than the 51Cr, 3H-adenine, 3H-leucine, or LDH release assays in detecting endothelial cell damage in vitro. PMID- 3839831 TI - Use of 31PNMR spectroscopy to follow the time course of phosphatidylcholine chemical synthesis. AB - 31PNMR spectroscopy is shown to be useful for studying the chemical synthesis of phosphatidylcholine from phosphatidic acid and choline. Sharp, well-resolved resonances were obtained by chelating multivalent cations, thereby enabling quantitation of reactants, products, and intermediates. The syntheses of several types of phosphatidylcholines were monitored by 31PNMR spectroscopy, including perdeuterated and headgroup spin-labeled molecules. For perdeuterated phosphatidylcholines, this analysis led to reaction conditions giving much better conversion to product than conditions previously observed. In addition, a polyphosphate side-product was identified in reactions which do not produce phosphatidylcholine, implying either a polyphosphate intermediate in the reaction mechanism, or else a competing side reaction. PMID- 3839833 TI - An expert system for nursing practice. Clinical decision support. AB - An artificial-intelligence-based nursing knowledge base can serve as an expert clinical decision support system in the areas of standards of care, care plans, continuing education, and others for patient conditions with both medical and nursing diagnoses. PMID- 3839832 TI - Hospital information systems. The relationship between nurse involvement in selection and nurse utilization. AB - Utilizing a survey approach, this descriptive correlational study explored the relationship between nurse involvement in the selection of a hospital information system and subsequent nurse utilization of that system. While no correlation was shown to exist between the degree of nurse involvement in the selection of a hospital information system and the subsequent nurse utilization of that system, the investigators strongly believe that further refinement of the questionnaire and investigation would show a correlation of the two. PMID- 3839834 TI - Computer-based information systems models. Perspectives for nursing. AB - A synthesis of theories from the management information systems (MIS) field provided the conceptual framework to describe how to design and develop effective computer-based information systems. An analysis of activities and interviews with nurse managers in a tertiary care medical center provided the basis for describing five major nursing department functions and the information requirements arising from those functions. The MIS framework was applied to the nursing department information requirements in order to derive MNIS, a normative model of a nursing information system, which was then used to "bench mark" the current status of commercially available nursing information systems. The researchers compared the MNIS with 28 nursing information systems that vendors are currently developing or marketing. The comparison revealed large gaps between nursing department needs and vendor-provided solutions. PMID- 3839835 TI - A proposed expert system for nursing practice. A springboard to nursing science. AB - The knowledge on which nursing practice is based comes largely from traditional sources, expert nurses passing on the wisdom of their experience to novices. Nursing research, although increasing, is usually parallel to nursing practice, and its findings, at best, are implemented only after long delays. Consequently, the most effective nursing responses to a particular client problem may be undiscovered or unknown. Nursing information systems reflect the nature and usage of nursing knowledge. They offer standard care plans, but the knowledge and decision structures for individualizing care remain exclusively in the mind of the nurse. Nurses may have great freedom to enter information into the information system, but the information is rarely retrievable in a form suitable for evaluation or research. Nursing practice, and the knowledge on which it is based, could be enhanced through the use of a novel expert system. This paper describes how such a system could be developed, with examples from the authors' prototype programs. Taxonomies of data, diagnoses, objectives, and interventions would make it possible to compare patients and to determine the relative effectiveness of nursing interventions. A built-in evaluation component would provide feedback and correction. Everyday nursing practice would become a field for research, and the knowledge gained from research would immediately be fed back into practice. In its development and in its implementation, this kind of system would help to build nursing science. PMID- 3839836 TI - Data base management for nursing education. One school's experience with System 1022. AB - The data base management system (DBMS) is one tool that can greatly facilitate the organization and retrieval of such information. An overview of DBMS is presented for nurse educators with considerations for using and selecting a DBMS. System 1022 (produced by Software House, 1983), is discussed in terms of the process and problems encountered. PMID- 3839837 TI - Challenges facing the distribution of an artificial-intelligence-based system for nursing. AB - The marketing and successful distribution of artificial-intelligence-based decision-support systems for nursing face special barriers and challenges. Issues that must be confronted arise particularly from the present culture of the nursing profession as well as the typical organizational structures in which nurses predominantly work. Generalizations in the literature based on the limited experience of physician-oriented artificial intelligence applications (predominantly in diagnosis and pharmacologic treatment) must be modified for applicability to other health professions. PMID- 3839838 TI - Nursing functions and computer support. AB - Computer-based information system (CBIS) support for nursing functions has typically been a by-product of some other automation effort such as communication, admission-discharge-transfer, or finance. Support specifically for nurses has been narrow in scope and little used, in spite of ongoing discussion about its need. However, the situation seems to be improving of late. But is the situation really improving? Or, are we merely witnessing unproductive machinations? Herein, we discuss three basic conditions that have slowed NIS evolution. Following that, however, we offer some evidence of real progress in computer-based support for nursing functions. PMID- 3839839 TI - Properties of the muscle proteins--a comparative approach. AB - The differences in performance that exist between skeletal muscles are in part determined by the presence of different forms of most of the contractile and regulatory proteins of the myofibril - isoforms. These isoforms have common properties but their amino acid sequences are not identical and they exhibit slight differences in biological activities, such as ATPase, affinity for calcium, etc., that are appropriate for the physiological properties of the muscle in which they are present. With the exception of actin, all the major proteins present in the I and A filaments of skeletal muscle have been shown to exist in two or more isoforms. Whereas proteins such as troponin I and troponin C are present as a single isoform in each fibre type in normal muscle, others such as myosin and tropomyosin are present as two or more isoforms, usually in relative amounts characteristic for the fibre type. Type I and type II muscle fibres possess the capacity of synthesizing all the skeletal muscle isoforms of the myofibrillar proteins. The complement of isoforms present in a muscle fibre, however, depends on a number of factors such as the stage of development or regeneration, type of innervation, hormonal effects, etc. Complex mechanisms involving the coordinated control of gene expression must operate to ensure that the set of isoforms of the myofibrillar proteins present is characteristic for the cell type. PMID- 3839840 TI - Long-term administration of massive doses of Sn-protoporphyrin in anemic mutant mice (sphha/sphha). AB - The effects of long-term administration of very large doses of Sn-protoporphyrin on hematological indices, histological changes, plasma bilirubin levels, tissue heme oxygenase activity, and activities of heme biosynthetic enzymes, were examined in genetically anemic mutant mice with hemolytic anemia (sphha/sphha). Long-term weekly treatment with Sn-protoporphyrin (100 mumol/kg body weight for 32 wk) did not alter hematological indices, histological findings, or enzyme activities related to heme biosynthesis, even though it resulted in sustained decreases in microsomal heme oxygenase activity in the liver, kidney, and spleen, and a prolonged decrease in plasma bilirubin concentration. Inhibition of heme oxygenase did not alter the level of cytochrome P-450 in the liver and the kidney. The results indicate that long-term treatment with massive doses of Sn protoporphyrin suppresses bilirubin formation but does not produce significant histopathological changes or appreciably interfere with heme synthesis, in this strain of genetically anemic mice. These findings provide further support for the idea that suppression of heme degradation to bile pigment by the inhibition of heme oxygenase may prove useful to the prevention of severe hyperbilirubinemia in humans. PMID- 3839841 TI - High-field 1H-NMR spectral analysis of some cucurbitacins. AB - 1H-nmr spectra of the natural products cucurbitacins A, B, C, D, E, F, I, L, 23, 24-dihydrocucurbitacin F, and hexanorcucurbitacin F, as well as three acetylated derivatives, were measured at 360 MHz in pyridine-d5. Chemical shifts and coupling constants were tabulated. In addition to all of the ring and side-chain protons, it was possible to assign several of the hydroxy group signals of these compounds. These compiled data should be useful for the structure determination of new compounds in this series. PMID- 3839842 TI - Effects of tumor status on the regulation of natural killer cell activity by tumor-associated fetal antigens. AB - In the present study we examined the effects of a tumor-associated fetal antigen (TAFA-II) on the activity of natural killer (NK) cells isolated from human cancer patients. TAFA-II suppressed the NK cell response of some patients, and the level of suppression appeared to be independent of tumor type or stage of cancer therapy. No significant correlations were found between lymphocyte, neutrophil, monocyte, or eosinophil populations and TAFA-induced suppression of NK cell activity. TAFA-II effects were also not attributable to Ia+ cells or to OKT3, OKT4, or OKT8 positive cells. This work confirmed results obtained in the rat model, in which suppression appeared to be directly mediated on the NK cell. PMID- 3839843 TI - Levamisole as adjuvant to chemotherapy for canine lymphosarcoma. AB - Ninety-eight dogs with previously untreated lymphosarcoma were selected for study. All dogs were clinically staged and stratified on the basis of stage. All dogs were treated with combination chemotherapy (vincristine, L-asparaginase, cyclophosphamide, and methotrexate) and randomized to either a levamisole or placebo group. There was no significant difference in either remission time or survival time between the levamisole and placebo groups. Clinical stage, age, and body weight had no influence on remission or survival time. The most significant prognostic factor was sex: Female dogs had significantly enhanced remission time (p = 0.004) and survival time (p = less than 0.001). PMID- 3839844 TI - Stage III Hodgkin's disease: improved survival with combined modality therapy as compared with radiation therapy alone. AB - This is a retrospective analysis of 120 patients with pathologically stage IIIA and IIIB Hodgkin's disease treated from April 1969 to December 1982. The median follow-up was 108 months. Treatment consisted of radiation therapy (RT) alone in 54 patients and combined radiation therapy and MOPP (nitrogen mustard, vincristine, procarbazine, prednisone) chemotherapy (CMT) in 66 patients. Stage III patients treated with CMT have an improved actuarial 12-year survival as compared with patients treated with RT alone with MOPP reserved for relapse (80% v 64%; P = .026). The 12-year actuarial freedom from first relapse by treatment for stage III patients is 83% and 40%, respectively (P less than .0001). Improved survivals following combined modality therapy are seen for the following subgroups of stage III patients: stage III2, 66% (CMT) v 44% (total nodal irradiation; TNI), P = .04; stage III1, 97% (CMT) v 73% (TNI), P = .05; stage III mixed cellularity or lymphocyte depletion histology, 94% (CMT) v 65% (TNI), P = .007; and stage III extensive splenic involvement, 77% (CMT) v 58% (TNI), P = .02. These survival differences are not seen in patients with nodular sclerosis or lymphocyte predominance histology or in patients with minimal splenic involvement. These data indicate that the initial use of CMT in stage III Hodgkin's disease results in an improved survival as compared with initial treatment with RT with MOPP reserved for relapse. Patients with limited Stage IIIA disease may still be candidates for radiation therapy alone. PMID- 3839845 TI - Thyroid uptake and imaging with iodine-123 at 4-5 hours: replacement of the 24 hour iodine-131 standard. AB - A study was carried out to determine the suitability of utilizing a 4 to 5 hr interval from administration of iodine-123 to imaging and uptake measurement as a replacement for the 24-hr standard originally established with iodine-131. In 55 patients who underwent scintigraphy at 4 and 24 hr, there was no discrepancy between paired images. In 55 patients who had uptake measured at 4 and 24 hr and in 191 patients who had uptake measured at 5 and 24 hr, the early measurements proved equal or better discriminants of euthyroid from hyperthyroid patients. In our institutions, these findings and the logistical advantages of completing the exam in 4-5 hr led us to abandon the 24-hr study in the majority of patients. PMID- 3839846 TI - Sunshine exposure and serum 25-hydroxyvitamin D concentrations in exclusively breast-fed infants. AB - The relationship between serum 25-hydroxyvitamin D (25-OHD) concentrations and sunshine exposure in 61 term, exclusively breast-fed infants younger than 6 months of age was investigated. Sunshine exposure was quantitated using a sunshine and clothing diary, which was verified by infant-adapted ultraviolet dosimetry. By multiple regression techniques, infant serum 25-OHD concentrations were significantly related to UV exposure and maternal serum 25-OHD concentrations. Infant 25-OHD concentrations correlated with sunshine exposure in infants whose mothers had low (less than 35 ng/ml) or high (greater than 35 ng/ml) serum concentrations of 25-OHD (r = 0.70, P less than 0.001 and r = 0.53, P = 0.004, respectively). Estimates were made to determine sunshine exposure conditions necessary to maintain serum 25-OHD concentrations above the lower limit of the normal range (11 ng/ml). A conservative estimate would be 30 minutes per week wearing only a diaper or 2 hours a week fully clothed without a hat. PMID- 3839847 TI - Effect of tin protoporphyrin on the excretion rate of carbon monoxide in newborn rats after hematoma formation. AB - This study evaluated the efficacy of tin protoporphyrin (TP), a competitive inhibitor of heme oxygenase, in suppressing the total body excretion rate of carbon monoxide (CO), an index of total bilirubin formation, in neonatal rats with artificially created hematomas. Wistar rat litters less than 12 h old were each divided into three groups of similar weight and treated as follows: (a) saline control (S); (b) hematoma, 80 microliter blood (H); (c) TP, 65 mumol/kg, and hematoma (TP-H). CO excretion of the H group increased rapidly after hematoma formation, reaching a maximum value of 79 +/- 4 SE microliter/kg/h 25 h later. Treatment with TP did not affect the pattern of CO excretion or its magnitude (78 +/- 2 SE microliter/kg/h, 25 h posthematoma). The S group showed no increase in CO excretion at this time (40 +/- 2 SE microliter/kg/h). At the conclusion of the experiment (45 h posthematoma), the plasma total bilirubin levels were slightly lower in the TP-H rats (1.0 +/- 0.1 SE mg/dl) than in H rats (1.2 +/- 0.1 SE mg/dl). The S rats had a plasma total bilirubin concentration of 0.8 +/- 0.1 SE mg/dl. The hepatic and splenic heme oxygenase activities were decreased by 61% (p less than 0.001) and 48% (p less than 0.05), respectively, in the TP-H rats as compared to the H rats. The S and H rats had similar enzyme activities. The results of this study suggest that though single-dose TP decreased tissue heme oxygenase activity, it did not significantly affect total bilirubin formation. PMID- 3839848 TI - A nonlinear multiple regression program, MULTI2 (BAYES), based on Bayesian algorithm for microcomputers. AB - A nonlinear multiple regression analysis program MULTI2(BAYES) was developed for microcomputers. The Bayesian algorithm which is incorporated in MULTI2 (BAYES) combines the insufficient individual patient data (individual data) with the pharmacokinetic parameters published in literatures (population parameters) to predict the plasma time course of the patient. The program is written in the minimum Microsoft BASIC commands alone to be executable on many personal computers without any modification. The numbers of parameters to estimate, independent variables and dependent variables are not restricted in use of MULTI2(BAYES). The pharmacokinetic models are defined as one pleases by the user. The four nonlinear least squares algorithms, i.e. Gauss-Newton method, damping Gauss-Newton method, modified Marquardt method by Fletcher and simplex method can be selected at user's option. MULTI2(BAYES) calculates the confidence limits of time courses at 95% significant level. PMID- 3839849 TI - Canine bombesin-like gastrin releasing peptides stimulate gastrin release and acid secretion in the dog. AB - The synthetic mammalian bombesin-like peptides, canine gastrin releasing peptide 27, 23 and 10, and porcine gastrin releasing peptide 27 were compared with amphibian bombesin 14 and 10 during intravenous infusions into six conscious dogs with chronic gastric cannulae. Gastrin and gastrin releasing peptide were measured in peripherally sampled venous blood by radioimmunoassay and gastric acid secretions were collected. All forms of gastrin releasing peptide stimulated gastrin release and gastric acid secretion in a dose-dependent manner. The larger canine and porcine peptides were more potent than the decapeptide. Bombesin 14 was more potent than bombesin 10. A rise in the venous concentration of immunoreactive gastrin releasing peptide of only 20 fmol ml-1 stimulated gastrin release to about 50% of maximal. Gastrin releasing peptide 10 was cleared from the circulation three times faster than the larger forms and this may account for the apparent differences in potency. PMID- 3839850 TI - Plasma progesterone concentrations, ovarian and endocrinological response and sperm transport in ewes with synchronized oestrus. AB - Two experiments involving 24 and 54 Australian Merino ewes were conducted in which the establishment of a cervical population of spermatozoa and several endocrinological events were studied after several regimens for the synchronization of oestrus. Intravaginal sponges impregnated with 500 mg (Exp. 1) or 200, 400 or 600 mg (Exp. 2) progesterone resulted in the maintenance of plasma progesterone concentrations of 1.5-4.9 ng/ml over a 12-day insertion period compared with 1.9-6.9 ng/ml during dioestrus in control ewes. In Exp. 1 basal concentrations of less than or equal to 0.25 ng/ml plasma were attained by 4 h after sponge withdrawal and this decline was much more rapid than in normal luteolysis. This was associated with fewer spermatozoa recovered from the cervix 2 h after insemination, and PMSG had no significant effect. In Exp. 2 injection of a supplementary dose of progesterone at sponge withdrawal resulted in a rapid increase in plasma progesterone concentrations followed by an equally rapid decrease and an attenuation of the rise in plasma oestradiol-17 beta, the LH surge, and the onset of oestrus. The numbers of spermatozoa recovered 4 h after insemination were not increased, and PMSG had no significant effect. Two factors were significant, namely the dose of progesterone in the sponge (600 mg greater than 400 or 200 mg, P less than 0.05) and stage of oestrus when inseminated (mid- or late oestrus greater than early). The data demonstrated that an adequate dose of progesterone/progestagen incorporated into intravaginal sponges and accurate timing of insemination relative to the LH surge are the most important factors involved in penetration of the cervix by spermatozoa. PMID- 3839851 TI - Adriamycin analogues. rationale, synthesis, and preliminary antitumor evaluation of highly active DNA-nonbinding N-(trifluoroacetyl)adriamycin 14-O-hemiester derivatives. AB - N-(Trifluoroacetyl)adriamycin 14-valerate (AD 32), a novel DNA nonbinding analogue of adriamycin with superior experimental antitumor activity, has undergone extensive clinical trial, with documentation of antitumor activity and low toxicity in human subjects. However, poor water solubility necessitates that the drug be administered to patients by continuous intravenous infusion at high dilution in a surfactant-containing formulation, with steroid prophylaxis to protect against a chest pain syndrome associated with the vehicle. On the basis of pharmacologic considerations, the title compounds have been prepared as second generation analogues of N-(trifluoroacetyl)adriamycin 14-valerate with improved aqueous solubility; use is made of the available carboxylic acid function to solubilize the products in dilute aqueous alkaline medium. Target compounds were made by treating N-(trifluoroacetyl)-14-halodaunorubicin (bromo or iodo) with monosodium salts of dibasic acids (malonic, succinic, glutaric, adipic, pimelic, azelaic, sebacic) in aqueous acetone. All of the products showed significant in vivo antitumor activity against the murine P388 leukemia (ip tumor, ip treatment once daily on days 1, 2, 3, and 4); most compounds were superior to the +181% increase in life span afforded by adriamycin (optimal dose 3.0 mg/kg per day), one of two drugs used as positive controls for the assays. Several of the test compounds showed highly curative activity in this system, similar to N (trifluoroacetyl)adriamycin 14-valerate, the other positive control agent. The hemiadipate product exhibited the most desirable properties of high antitumor efficacy (86% cure rate all P388 tumor-bearing animals through four levels of a 40-70 mg/kg dose-response range), aqueous solubility (60 mg/mL in pH 7.4 phosphate buffer), and solution stability (no decomposition at 4 degrees C, 0.5% hydrolysis at 27 degrees C, over 24 h at pH 7.4). PMID- 3839853 TI - The structure of C-protein and X-protein molecules and a polymer of X-protein. AB - C-protein and X-protein are components of the thick filaments in vertebrate skeletal muscles and occupy similar locations in different fibre types. We find that the molecules are both rods about 30 to 40 A wide, but they differ significantly in their lengths, the X-protein molecule being about 350 A long and the C-protein molecule about 280 A. This suggests they are not isoforms. The short length of the C-protein molecule implies that it cannot act in the thick filament as a length-determining agent by a simple vernier mechanism. X-protein associates at low ionic strength (KCl concentration less than 0.07 M) but, unlike C-protein, forms long ordered polymers. These have been examined by electron microscopy to gain information on the molecular shape and on how the molecules interact. The polymers are helically twisted ribbons with a repeat distance along the axis of 660 A. The cross-section of the ribbon is approximately elliptical with major and minor axes of 405 A and 166 A, respectively. From an analysis of the micrographs by optical diffraction, we deduce that the molecules run across the face of the ribbon at an angle of about 15 degrees to the diameter and lie on a two-stranded helix. Models for the polymer are discussed in which the molecules are slightly bowed outwards and bind to each other only at their ends. We suggest that interactions similar to those in the polymer might occur in the thick filaments of muscle, and propose that at each axial position where X-protein attaches along the myosin filament, three X-protein molecules might form an approximately triangular ring around the filament backbone. The appearance of the X-protein polymers is similar to that of the twisted structures called paired helical filaments that make up the neurofibrillary tangles associated with dementia of the Alzheimer type. PMID- 3839852 TI - Local dielectric properties around polar region of lipid bilayer membranes. AB - Local dielectric constant was evaluated from the Stokes shifts of fluorescence spectra of L-alpha-dansylphosphatidylethanolamine (DPE) incorporated into liposomes made of synthetic phosphatidylcholine (dipalmitoyl or distearoyl) or bovine brain phosphatidylserine. The evaluation was established as follows. First, the Stokes shift of DPE was assured to follow Mataga-Lippert's equation and was a function of the dielectric constant and the refractive index in some standard organic solvents. Second, the change of the refractive index did not contribute much to the change in the Stokes shift. Third, the time resolved fluorescence depolarization of DPE in liposomes showed that the cone wobbling diffusion was rapid relative to the fluorescence lifetime and therefore that the dielectric relaxation did not affect the evaluation of the constant in the polar region of membranes. We then investigated the characteristics of the local dielectric constant in the polar region of the lipid bilayer and found that the dielectric constant varies between 4 and 34 depending upon calcium binding and also gel/liquid-crystal phase transition. Such large changes of the local dielectric constant were further correlated with the dynamic structure of lipid bilayer membranes measured by conventional fluorescence depolarization techniques. The large changes of dielectric constant around the polar region suggest that electrostatic interactions at this region can be altered 10-fold by such ionic or thermotropic factors and therefore that local dielectric properties can play crucial roles in membrane functions. PMID- 3839854 TI - Characterization of human endogenous retroviral envelope RNA transcripts. AB - We characterized the structure of human endogenous retroviral env RNA transcripts by Northern blot hybridization and cDNA cloning. Polyadenylated 3.0- and 1.7 kilobase env RNAs can be identified in placenta, colon carcinoma, and breast carcinoma cells. We have obtained partial cDNA clones of both size classes of RNAs. Both env RNAs contained putative gp70 coding sequences; the 1.7-kilobase species, however, lacked sequences in the 3' env region which could specify a p15E analog. Both cDNA clones contained in-frame termination codons; thus, neither could encode full-length env proteins. PMID- 3839855 TI - Combination of CUSA and neodymium:YAG laser for canine partial nephrectomy. AB - A Cavitron Ultrasonic Surgical Aspirator (CUSA) was used to isolate and skeletonize parenchymal renal vessels during 20 partial nephrectomies performed on 10 dogs. After isolation of the renal vessels, hemostasis was obtained by direct application of neodymium:YAG laser energy. Blood loss and total operative time were reduced compared to a control series of partial nephrectomies performed with a scalpel. The combination of Cavitron Ultrasonic Surgical Aspirator plus a Nd:YAG laser appears to offer advantages compared to either modality used alone or to standard techniques for partial nephrectomy. PMID- 3839856 TI - Graduate medical education in the United States, 1984-1985. PMID- 3839857 TI - Adynamic ileus following induced hypotension. PMID- 3839858 TI - Effect of the dietary fatty acid component on the release of 14C-taurocholate, 14C-bilirubin, alkaline phosphatase, and aspartate transaminase by isolated rat liver cells. AB - Rats were fed liquid diets for 7 days containing either triolein or Liposyn, which is rich in linoleic acid, as fat sources, and liver cell suspensions were prepared following collagenase perfusion. The release from isolated cells of alkaline phosphatase and aspartate transaminase during a 3-hr incubation did not differ. The uptake and release of 14C-taurocholate during a brief incubation was lower but not significantly in Liposyn-fed rats (0.1 greater than p greater than 0.05): the uptake was 9.74 +/- 1.58 vs 16.7 +/- 3.3 nmol/mg protein in triolein fed rats; the release was 3.17 +/- 0.65 vs 5.35 +/- 1.01 nmol/mg protein in triolein-fed rats. The uptake of 14C-aminolevulinic acid was similar in both groups, but release of 14C-bilirubin during a 30-min incubation was 5,420 +/- 1010 in the Liposyn group vs 12,030 +/- 2,200 dpm/mg protein in the triolein group (p = 0.02). It is concluded that a diet high in linoleic acid decreases bilirubin release in isolated liver cells consistent with the ability of this diet to cause cholestasis in vivo. PMID- 3839860 TI - Vasoconstrictor effect of neuropeptide Y (NPY) on canine coronary artery. AB - The effect of neuropeptide Y (NPY) on the coronary circulation of the closed chest dogs (n = 7) was studied. The left circumflex artery was cannulated and perfused with arterial blood withdrawn from the femoral artery. The flow was kept constant by a roller pump and it was monitored by an electromagnetic flowmeter. An increase in the perfusion pressure which was characterized by a slow onset and long-lasting effect (more than 10 min) was found in each dog after NPY. There were no significant changes in the arterial blood pressure, central venous pressure and heart rate. The peak rise was observed at about 1 min; from 108 +/- 9 mmHg to 144 +/- 13 mmHg (mean +/- SE) (p less than 0.01). This increase in the perfusion pressure resulted from vasoconstriction distal to the cannula. When the doses of NPY was changed, a dose-response relation was found (n = 4). Phentolamine did not inhibit the vasoconstrictor effect of NPY (n = 4). The endogeneous substance NPY might be engaged in the regulation of myocardial perfusion and can be a candidate responsible for coronary spasm. PMID- 3839859 TI - Increased cholesteryl ester content in liver of mice fed lipid emulsion diets high in polyunsaturated fats. AB - Mice were fed a liquid diet containing different fat sources for 6 days and several biochemical parameters in the liver were examined. Mice fed diets containing Nutralipid or Liposyn as 45% of total calories had 30.5 +/- 2.5 and 25.8 +/- 3.7 nmol cholesteryl esters per milligram liver protein, respectively, as compared with 13.14 +/- 2.4 for those fed regular mouse food and 13.7 +/- 2.45 for those fed an emulsion containing mostly triolein as fat source. A similar increase in liver cholesteryl esters resulting from estrogen treatment has been proposed as the basis for changes resulting in decreased bile flow in the rat. It is suggested that the high content of polyunsaturated fatty acids in nutrient emulsions might be responsible for cholestasis sometimes observed in patients receiving these preparations. This is further supported by the observation that, as in the case of estrogen treatment, the cholesteryl ester level returned to normal when mice were treated with the detergent Triton WR-1339. PMID- 3839861 TI - [Study on a new cephamycin preparation cefminox in the field of pediatrics]. AB - Cefminox (CMNX, MT-141) was studied both fundamentally and clinically in the field of pediatrics with following results. The MIC of CMNX for Bordetella pertussis was 0.10 micrograms/ml in inoculum size 10(6) cells/ml. Following administration of 10 and 20 mg/kg of CMNX as drip infusion over 1 hour, the blood levels of the drug were 49.0 +/- 18.1 and 69.1 micrograms/ml at completion of infusion, 28.8 +/- 7.7 and 61.6 micrograms/ml at 1.5 hours, 23.6 +/- 9.3 and 44.1 +/- 3.8 micrograms/ml at 2 hours and 1.4 +/- 1.4 and 4.0 +/- 0.6 micrograms/ml at 7 hours, with T1/2 of 1.03 and 1.41 +/- 0.03 hours, respectively. Within the first 7 hours after administration, 61.4 +/- 8.2 and 55.9 +/- 0.8% of the drug dosed were excreted at active form in urine. In child with encephalitis, drug considered to be good as a cephem antibiotic was achieved in the cerebrospinal fluid (the ratio of the level in the cerebrospinal fluid to that in the serum was 7.3%). In addition, in the pus in empyema also high level was reached (its ratio against blood level was 53%). In the treatment of 31 cases of acute infections of pediatric field including upper and lower airway infections, empyema, whooping cough, acute urinary tract infections and phlegmon, CMNX was administered intravenously either as one shot injection as drip infusion. The clinical results obtained were rated as good or more in 93% of the cases and as fair or more in 100% of the cases. The main dosage of CMNX in these cases was about 60 to 70 mg/kg per day in 2 or 3 divided doses. S. aureus, S. pyogenes, S. pneumoniae, H. influenzae and ABPC resistant strain of E. coli demonstrated in various materials could be eradicated after intravenous injection of CMNX. CMNX was administrated for a period of 2 to 16 days to a total amount of 1.5 to 26.5 g. In none of these cases side effects developed nor any abnormality was revealed by hematological findings or results of renal or liver function. PMID- 3839862 TI - [Laboratory and clinical studies of cefminox in the pediatric field]. AB - The authors have carried out the pharmacokinetic and clinical studies of cefminox (CMNX, MT-141). The results were as follows: CMNX was given by intravenous drip infusion for 1 hour at a dose of 20 mg/kg b.w. to 2 children. The serum levels of CMNX were 103.02 micrograms/ml and 77.73 micrograms/ml at 1 hour after drip infusion, and the levels at 7 hours were 4.39 micrograms/ml and 4.19 micrograms/ml, respectively. The half life times were 1.20 hours and 1.32 hours, respectively. CSF concentrations of CMNX at 1 hour after drip infusion of a dose of 50 mg/kg in 3 patients with aseptic meningitis were 1.68 micrograms/ml (d.i. for 30 minutes), less than or equal to 0.25 micrograms/ml (d.i. for 1 hour) and 0.51 micrograms/ml (d.i. for 1 hour), respectively. CSF/serum ratios were 1.1% and 0.6%. Clinical efficacy was evaluated in 10 cases with purulent tonsillitis (3 cases), pneumonia (3 cases), pyelonephritis (1 case) and enteritis (3 cases). Excellent and good responses were obtained in all cases. Bacteriological response in the form of eradication was noted 8 of 9 cases. No side effects were observed. PMID- 3839864 TI - [Fundamental and clinical studies of cefminox in children]. AB - Cefminox (CMNX, MT-141), a newly developed injectable cephem antibiotic, was administered intravenously as one shot injection at 3 different dosages of 10, 20 and 40 mg/kg to 9 children; for each dose level 3 children were used. In these children serum and urinary concentrations as well as recovery rates were determined. In addition, in order to determine clinical and bacteriological efficacies of CMNX, it was used in the treatment of 37 cases of various infections consisting of 2 cases of acute tonsillitis, 1 case of acute tonsillitis associated with otitis media, 1 case of acute bronchitis, 1 case of chronic bronchitis, 20 cases of pneumonia, 1 case of pneumonia associated with otitis media, 8 cases of urinary tract infections, 2 cases of purulent lymphadenitis and 1 case of gluteal abscess. The drug was administered intravenously as one shot injection at a mean daily dosage of 76.6 mg/kg, in 4 divided doses in most cases, for a mean period of 6 days. Finally, in 43 cases added of 6 drop out cases which were included in analysis of efficacy side effects and abnormal laboratory findings were examined. The following results were obtained. In 9 cases, which received CMNX at 3 different dosages of 10, 20 and 40 mg/kg for 3 cases each intravenously as one shot injection, mean serum concentrations reached the peaks of 109.4, 218.1 and 357.1 mcg/ml at 5 minutes after injection, respectively, showing dose response relation. The mean half lives were 1.74, 1.62 and 1.84 hours, respectively. The mean concentrations of CMNX in urine in the same cases as used for determinations of serum concentrations were highest during the 0 approximately 2 hours period, reaching 1,582, 3,304 and 4,618 mcg/ml at the respective doses. The mean recoveries within the first 6 hours were 82.8, 69.8 and 81.3%, the rate for 20 mg/kg group being lower than those obtained for the other groups. This is possibly due to 1 case which showed unusually low recovery rate of 44.4%. When this case is excluded, the recovery rates became similar for all groups. As to clinical results, responses rated as good or higher were obtained for 91.9% of the cases (34 cases/37 cases), with high efficacy rate. No side effects were seen in 43 cases included of drop out cases.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3839863 TI - [Clinical studies of cefminox in the pediatric field]. AB - The in vitro antibacterial activity of cefminox (CMNX, MT-141) was nearly equal to that of CTX, LMOX, CMZ and CPZ against the 4 species of clinically isolated strains. CMNX was applied to a total of 17 patients including 11 cases of bronchitis, 4 cases of pneumonia and 2 cases of urinary tract infection. The results showed an efficacy rate of 94% (16/17). In the 4 patients from whom the isolation of pathogenic organisms was possible, the bacteriological response to CMNX was appreciable the efficacy rate being 80% (4/5). No side effect of the drug was observed. PMID- 3839865 TI - Primary malignant lymphoma of the appendix. AB - A 70-year-old Japanese woman with primary malignant lymphoma in the appendix was treated. The diagnosis was established after surgery. Histologically, the tumor was malignant lymphoma, lymphocytic, well differentiated, according to the Rappaport's classification which is a good prognostic type of extranodal malignant lymphoma. The patient was treated by ileocecal resection and without radiochemotherapy. The 36-month follow-up revealed neither evidence of recurrence nor metastases. PMID- 3839866 TI - Effect of active vitamin D3 analogs on the osteoporosis of rats caused by ovariectomy. PMID- 3839867 TI - Progress in the management of high risk non-Hodgkin's lymphomas. 10 years of experience of the 3rd Medical Department of Hanusch Hospital, Vienna. AB - An analysis of 173 cases of non-Hodgkin's lymphoma (NHL) admitted to our hospital from January 1973 to January 1983 is presented. Of the 173 cases, 124 patients suffered from NHL of high grade malignancy according to the Kiel classification (37 centroblastic lymphoma (CB), 30 immunoblastic lymphoma (IB), 43 lymphoblastic lymphoma (LB), 14 NHL high grade malignancy unclassifiable). In addition, 26 patients with secondary high grade malignant NHL were included in the analysis (14 secondary CB, 10 secondary IB, 2 secondary LB). Also investigated were 23 patients with anaplastic centrocytic lymphoma (CC) (20 primary CC, 3 secondary CC), an entity originally classified as low grade malignant lymphoma, but showing a poor outcome and need for aggressive therapy. Symptoms at presentation of all patients are described. Of the 173 patients, 71% had an advanced stage of the disease at the time of diagnosis (Ann Arbor stage III or IV). B-symptoms were observed in 81%. Extranodal involvement, (exceptive bone marrow involvement), determined by clinical examination was seen in 55%. Survival of patients changed significantly after replacing initial radiotherapy with aggressive chemotherapy (P less than 0.001). Improvement of survival statistics was due to the better outcome of patients with localized stages (Ann Arbor stages I and II) as compared to those with generalized disease (P less than 0.002). Prognostic factors influencing survival were elevation of lactic dehydrogenase (P less than 0.0001) and response to therapy (P less than 0.0001).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3839868 TI - Computers in paediatrics: 13. Computer programme to calculate heritability and its standard error from family or twin studies. PMID- 3839869 TI - Computers in paediatrics: 14. Computer programme for genetic counselling using matrices. PMID- 3839870 TI - Pharmacokinetic calculator program for generation of initial parameter estimates from a three-compartment infusion model. AB - A polyexponential curve-stripping program, KIN, is described for use on the HP 41CV programmable calculator. The program may be used in the analysis of plasma concentration-time curves for a three-compartment intravenous bolus or infusion model with linear elimination processes. The coefficients and hybrid rate constants of the exponential function are then used to compute pharmacokinetic parameters (volume of the central compartment, intercompartmental rate transfer constants), which may be used as initial estimates of model parameters in non linear regression curve-fitting procedures. PMID- 3839871 TI - DATALIN--an interactive data entry program for use with NONLIN. AB - A package of FORTRAN programs for data entry into NONLIN (version II) is described which may be used in the analysis of plasma-concentration time curves after single or multiple doses for fourteen pharmacokinetic models described in terms of the model's microconstants (volume of compartments, rate constants). In all cases, infusion rates must be zero-order and absorption rates first-order. The program contains an edit subroutine allowing for changes in initial parameter estimates and their lower and upper limits, weighting factors, number of iterations in the NONLIN analysis, and plot option. Individual X and Y values may be changed and listed and X-Y data pairs may be inserted or deleted. Factors pertaining to each of the data entries in relation to NONLIN are discussed. PMID- 3839872 TI - Use of the Computer Automated Structure Evaluation program in determining quantitative structure-activity relationships within hallucinogenic phenylalkylamines. AB - The Computer Automated Structure Evaluation (CASE) program has been successfully used to generate automatically and identify molecular fragments relevant to the hallucinogenic activity expressed by some phenylalkylamines. Utilizing these major fragments, Quantitative Structure-Activity Relationship (QSAR) calculations were carried out to obtain an equation which was used for predictions of potencies. Correlations of these major activating/inactivating fragments with the biological activity of the compounds, as well as predictive capabilities of the CASE program, are discussed. PMID- 3839873 TI - Statistical analysis of temperature-dependent neuronal activity. AB - A set of computer programs which collect and analyze data on the temperature dependence of neuronal activity is described. Data on the response to thermal stimulation of cultured neurons of the rat preoptic area were collected and displayed on-line and were stored on disk for off-line analysis. Statistical analysis of the data examined two alternate models of thermosensitivity: one that the relationship between neuronal activity and temperature was well fit by a linear relationship and the other, that it was well fit by semi-log regression. For each of the models, a neuron was considered to have temperature-dependent activity if two criteria were met: first, that the model was considered adequate by a lack-of-fit F-test and second, that the slope of the regression line differed from zero using a t-test. A statistical method was also used to test the hypothesis that the neuronal response to temperature displays a change point. This method did not identify any neurons whose thermal response relationship could be better fit by two intersecting regression lines than by one regression line. PMID- 3839874 TI - Method for the quantitation and characterization of the cholinergic neurotoxin, monoethylcholine mustard aziridinium ion (AF64A). AB - Monoethylcholine aziridinium ion (AF64A), which is generated from the precursor, acetylcholine mustard hydrochloride, exerts selective neurotoxic effects against brain cholinergic neurons when injected intracerebrally. Conditions associated with optimal generation of AF64A were examined. The results indicate that hydrolysis and cyclization of the precursor are optimal at 25 degrees C with the former occurring at pH 9.0 and the latter at pH 7.3. The aziridinium ion is best stabilized at pH 7.3 at 4 degrees C. PMID- 3839875 TI - [MOPP therapy of Hodgkin's disease previously treated with MOPP]. PMID- 3839876 TI - [Loss in follow-up at a center for sexually transmitted diseases]. PMID- 3839877 TI - The method and management of thyroid surgery in the pediatric patient. AB - Thyroid surgery in the pediatric age patient accounts for a small minority of all thyroid surgery. Batsakis and Nishiyama reported only 136 patients under the age of 18 who underwent thyroid surgery in 27 years at the University of Michigan. In most series involving the pediatric age group, the majority of thyroid procedures are performed on adolescents. Thyroid surgery in the young child requires special precautions in addition to those routinely associated with thyroidectomy in the adult. The techniques and perioperative management of the pediatric thyroidectomy employed at our institution has evolved as experience is gained. Our experience with five such patients with adequate follow-up will be presented. PMID- 3839878 TI - Revision stapes surgery: problems with some solutions. AB - A review of 217 consecutive revision stapes operations performed during a ten year period revealed that the surgeon encounters more pathological variables than he does during primary operations. Hence, the technical solutions are less stereotyped and the net results less predictable. Prosthesis displacement, with or without incus tip erosion, was the most common primary cause of failure (82%). However, oval window problems such as footplate refixation, perilymph fistula, otosclerotic regrowth, and lateralized oval window membrane in 60% of cases often complicated prosthesis displacement. First revision operations in 174 cases resulted in postoperative bone-air deficit of 10 dB or less in 65% of cases, much better than the 45% for second revision results, and the 25% for third revisions. These statistics provide our practice with a realistic prognosis when discussing revision stapes surgery with the individual surgical candidate. PMID- 3839879 TI - The use of the Nd-YAG laser in neurosurgery. AB - Whereas the focused CO2 laser may be used as a cutting instrument in less vascularized tissue with limited trauma to the surrounding tissue, use of the defocused Nd-YAG laser results in homogeneous coagulation with an energy dependent depth effect. Thus, residual tumor tissue may be cauterized selectively with a depth effect which can be predicted with satisfactory precision. Tumor shrinkage and demarcation based on different absorption properties facilitates dissection and, moreover, allows the preservation of healthy tissue. The excellent coagulating properties of the Nd-YAG laser render it especially effective in cases of highly vascularized meningeal tumors. PMID- 3839880 TI - Corneal incisions produced with the fourth harmonic (266 nm) of the YAG laser. AB - The fourth harmonic wavelength (266 nm) of a neodymium YAG laser was used to cut precise grooves on the surface of the human cornea. Well-controlled cuts were made using the laser operating at 1.3 kHz. The width of the grooves was 2-3 micron. The depth could be controlled by varying the amount of laser exposure. PMID- 3839881 TI - Retinal effects of the frequency-doubled (532 nm) YAG laser: histopathological comparison with argon laser. AB - Retinal lesions produced in Dutch Cross rabbits with a frequency-doubled (532 nm) YAG laser in single pulse mode (30-100 microJ) and in train of uniform pulses (2.6 and 7.5 mJ) underwent histopathological examination by light and electron microscopy. The results were compared to argon laser lesions (11 and 15 mJ) in the same animals. Low-energy single-pulse YAG lesions produced separation of the neural retina from the retinal pigmented epithelium (RPE), while higher energies caused severe disruption of retinal structures with moderate damage to the RPE. A striking and consistent finding of all the single-pulse lesions was the presence of red blood cells between the RPE and neural layers. The findings appear to support a process of mechanical disruption. In contrast, the lesions produced by a uniform train of pulses showed well-defined damage to RPE and photoreceptors with no red blood cells between these two layers, no choroidal damage, and relatively little disruption of the inner retina. The typical argon lesion evidenced cellular damage from the RPE through all retinal layers. Leukocytes in the choroid contained "holes" or vacuoles not seen in YAG lesions. Both the uniformly pulsed YAG laser burst and argon laser produced effects consistent with a thermal process. Some differences between argon and YAG burst were observed. The results suggest that there may be a clinical potential for the 532-nm burst YAG in treating retinopathies. PMID- 3839882 TI - Preliminary study of the Nd:YAG laser in canine partial nephrectomy. AB - Partial nephrectomy is effective in the treatment of segmental renal disease but hemostasis remains a challenge. In this preliminary investigation the Nd:YAG laser was used alone or as an adjunct to the scalpel in partial nephrectomies to determine if hemostasis could be improved. A technique of 100-W laser transection with occlusion of the renal artery was effective for partial nephrectomy and achieved complete hemostasis. Conditions of patent renal artery flow or renal cooling were associated with a reduction in necrosis depth with 100-W laser partial nephrectomies. All techniques were compatible with survival over the 5 day study period. PMID- 3839883 TI - Computer analysis of laser dosimetry data: a method of accurate energy density delivery. AB - In the past, utilization of the laser in medicine has been limited by the lack of accurate quantification of the energies delivered to the tissue. Data obtained in the course of this investigation have demonstrated the relationships which exist between the energy delivered to the tissue and the optical system composed of the fiber and focusing lens. A continuous-wave multimode Nd:YAG laser (1,064 nm) was used in these experiments. Utilizing the beam scan technique previously described, we recorded over 100 beam profiles at various distances from the handpiece (fiber optic and lens). Computer analysis of our data established the mathematical correlation between the surface area of the irradiated spot and the distance of the handpiece to the target, thus allowing us to predict the surface area of the irradiated spot to any desired distance. By duplicating our methods with his particular optical system, the clinician or any laser user has the capacity to determine the energy delivered to the tissue (J/cm2) by knowing the power of the laser (watts), the time of exposure (seconds), and the distance of the handpiece to the treatment site (centimeters). PMID- 3839884 TI - Adroxazine, a hormone of the adrenals that stimulates the rate of replication of bone marrow stem cells. AB - Treatment of normal animals with the thymothyroid hormone, leucogenenol, increases the rate at which appropriate committed precursor cells of the bone marrow develop sequentially into their corresponding functional cells: neutrophils, lymphocytes and red blood cells. Hence following treatment with leucogenenol, at a time that is dependent on the quantity of leucogenenol injected, there is a temporary increase in the bone marrow of the relative concentrations of early forms of committed cells such as myeloblasts. However, following treatment of bilaterally adrenalectomized rats with leucogenenol the early forms of committed cells in the bone marrow, such as myeloblasts, instead of showing a temporary relative increase show a temporary significant decrease in concentration. A new compound, adroxazine, C34H65NO2, was isolated from the methanol extract of bovine adrenal tissue. This compound, on injection into bilaterally adrenalectomized rats, causes leucogenenol to have the same effect on the development of their bone marrow cells as it does in normal rats. Adroxazine is present in the cortex of the adrenals and in blood serum. It is suggested that the population of primitive replicating cells is controlled by the concentration of adroxazine in the serum. PMID- 3839885 TI - CSF distribution of morphine, methadone and sucrose after intrathecal injection. AB - The lumbar to cisternal CSF distribution of morphine and methadone were compared to C-14 sucrose, a standard marker of CSF bulk flow, after lumbar subarachnoid injections in a sheep preparation. Morphine appeared and peaked simultaneously with C-14 sucrose in cisternal CSF at 90 to 190 minutes. The mean peak cisternal CSF morphine concentrations were sustained for 30-40 minutes, and averaged 148 ng/ml, representing 0.3% of the administered dose. Methadone was not detectable in cisternal CSF up to 240-300 minutes after lumbar subarachnoid administration. The C-14 sucrose/morphine ratio was increased an average of 6.7 times in cisternal CSF as compared to the ratio of the two compounds injected into the lumbar subarachnoid space. These studies demonstrate that morphine, a hydrophilic opioid, given intrathecally moves rostrally and appears in cisternal CSF by bulk flow. Furthermore the rostral redistribution of morphine is associated with the clearance of morphine from CSF. Methadone, a lipophilic opioid, appears to be completely cleared from CSF before it reaches the cisterna magna. These pharmacokinetic studies support a contribution of supraspinal sites to the analgesic and adverse effects produced by morphine given by spinal routes of administration. In contrast methadone appears to exert its effects predominantly at spinal sites. PMID- 3839886 TI - Hyperalgesia induced by altered glycinergic activity at the spinal cord. AB - Glycine or its receptor antagonist, strychnine, were administered perispinally to investigate their effect on nociceptive responses elicited by activation of various cutaneous receptors. Strychnine produced dose-dependent sensory and motor disturbances; 1 and 5 micrograms doses were sub-convulsive, eliciting recurrent episodes of coordinated grooming, scratching and biting at the skin, which persisted for approximately 10 minutes post-injection; higher doses (25 and 100 micrograms) increased the intensity and duration of these effects, and produced convulsive motor seizures. Motor disturbances were not elicited by glycine (5, 25, 100 and 400 micrograms). Strychnine treated rats, at all doses, vocalized consistently in response to light cutaneous stimulation; a significant proportion of glycine treated rats also vocalized, but were not as sensitive to mild stimulation. Skin hyperalgesia persisted for at least 30 minutes in both strychnine and glycine treated rats. Both strychnine and glycine significantly reduced vocalization thresholds to tail shock. However, no clear effect on tail flick latency was observed following either strychnine or glycine. These results indicate that glycinergic neurons contribute to the tonic regulation of nociceptive input at the spinal cord. PMID- 3839887 TI - Heated fat, vitamin E and vascular eicosanoids. AB - A semisynthetic diet containing adequate amounts of vitamin E and 10% (w/w) of a mixture of polyunsaturated oils subjected to heating and characterized by elevated indexes of thermal alteration (polar component, dimer triglyceride, altered triglyceride contents and reduced alpha-tocopherol levels) was fed to growing male rats for a period of eight weeks. It resulted in a selective alteration of the production of vascular eicosanoids (elevation of platelet thromboxane formation and decrease of vascular prostacyclin release) compared to the values found in rats fed a diet containing a fresh mixture of polyunsaturated oils. Major nutritional parameters, plasma lipids and the fatty acid profiles of plasma, liver and heart lipids were not different in the two groups of animals. Supplementation of an excess vitamin E (300 mg/kg) to the diet containing heated fat neutralized the adverse effects of heated fat on vascular eicosanoid production. PMID- 3839888 TI - [Fibroscopy in assessing the effectiveness of radiation therapy in cancer of the upper respiratory tracts and in lymphosarcoma of the tonsillar ring]. AB - Proceeding from 2626 fibroscopic examinations of the upper respiratory tract during radiotherapy of 492 cancer patients, the most appropriate time of control endoscopic examinations have been defined, endoscopic criteria for the evaluation of the efficacy of therapy of primary tumors of different parts of the upper respiratory tract have been determined. The evaluation of the efficacy of therapy by the common otorhinolaryngological method was compared with that of the fibroscopic method of examination. The efficacy of radiotherapy by changing endoscopic pictures is most vividly expressed in laryngeal cancer after delivering the dose of 30-40 Gy (49-66 units of TDF), in laryngeal and nasopharyngeal cancer 50 Gy (82 units of TDF) and in lymphosarcoma of the throat ring 20 Gy (33 units of TDF). In the use of the speculum and fibroscopic methods difficulties in the organ inspection and differentiation of changes were noted in 31.7 and 16.1% of the cases including 64.3 and 11.9% in laryngopharyngeal cancer and 80.9 and 1.8% in nasopharyngeal cancer. Tumor regression in concomitant involvement of the tonsils by lymphosarcoma develops not uniformly. A positive time course is first of all noted in lymphadenoid masses: in the palatine and lingual tonsils and then in the pharyngeal, tubal and laryngeal tonsils. Complete tumor regression after irradiation at a dose of 20 Gy (33 units of TDF) is noted in 50% of lymphosarcoma patients. In 13.2% of cases doses of 50 Gy (82 units of TDF) and 60 Gy (99 units of TDF) are required for complete regression of lymphosarcoma of the throat ring. PMID- 3839889 TI - [Improvement in a classification information-retrieval language on the topic of medical roentgenology and radiology]. PMID- 3839890 TI - Knee joint in soccer players: osteoarthritis and axis deviation. AB - The knee joints of 81 veteran soccer players between ages 40 and 74 were examined. An analysis of and relationships between soccer practice at a top level, osteoarthritis, meniscectomy, and leg axes were evaluated. One-hundred and sixty-two knees were assessed through clinical examination and X-ray examination using a large table in order to observe the entire lower extremity's axis in weight bearing. First, it appears that radiological signs of osteoarthritis in soccer players increase with age in a much greater percentage than in a random population of the same age. Second, all players who have had a meniscectomy presented with radiological signs of osteoarthritis. In this series, 91 knees (56%) had X-ray signs of osteoarthritis. 64 knees (70%) in which the roentgenograms showed significant osteoarthritic changes were clinically asymptomatic. Third, the lower extremities displayed a varus angulation of both knees in 73% (meaning that 59 veteran players have a varus of both legs), while 81% of all the knees showed a varus deviation. PMID- 3839892 TI - A possible cause of arteriosclerosis. AB - A new etiology of arteriosclerosis is proposed. This theory has emerged from the inability of current theories to account for the spontaneously occurring disease and from numerous factual anomalies uncovered by recent research. It is suggested that arteriosclerosis is a chronic infectious disease caused by an infestation of blue-green algae, and that the natural history, histopathologic changes, and many apparently contradictory facts associated with arteriosclerosis are explained by such an etiologic agent. If correct, a radical shift in our understanding of the disease is required. Certain observations and forecasts are made based upon this infection theory. PMID- 3839891 TI - Dialysis osteodystrophy. A study involving 94 patients. AB - Dynamic skeletal histomorphometry was performed in 94 unselected patients receiving maintenance dialysis for chronic renal failure. An attempt was made to correlate the results with the clinical, biochemical and radiological findings. Skeletal histology was abnormal in each case. Hyperparathyroidism was present as the only abnormality in 18 patients and osteomalacia in 26; 50 patients showed both abnormalities. Osteomalacia, in contrast to hyperparathyroidism, increased in prevalence and severity with the duration of dialysis and with bone aluminum content. The majority of patients had histological osteosclerosis. It was impossible to predict either the nature or the severity of the histological lesions on the basis of symptoms and physical signs or on the basis of most biochemical parameters (including serum concentrations of three vitamin D metabolites). Serum alkaline phosphatase values and serum immunoreactive parathyroid hormone (iPTH) concentrations were positively correlated with the severity of histological hyperparathyroidism. Subperiosteal erosions of the phalanges were associated with severe histological hyperparathyroidism in each case but this radiological sign was absent in 66% of patients with histological hyperparathyroidism. Radiological osteosclerosis was associated with severe histological osteomalacia in each case, but this radiological sign was absent in 87% of patients with histological osteomalacia. No other radiological sign proved a reliable guide to the underlying skeletal histology. In the majority of dialysis patients, a skeletal biopsy is required for an accurate diagnosis of the nature and severity of azotemic osteodystrophy. PMID- 3839893 TI - Artificial sapphire probe for contact photocoagulation and tissue vaporization with the Nd:YAG laser. AB - A contact artificial sapphire, developed for use with the Nd:YAG laser, allows the performance of open surgery (laser probe) and has endoscopic applications for the treatment of gastrointestinal bleeding (micro laser tip) and tumors (micro laser rod). Advantages of this contact irradiation include precision of surgical technique, minimal tissue damage, and excellent hemostatic and cutting capabilities, with low backscattering of laser energy. PMID- 3839894 TI - [Effect of the conditions for maintaining mollusks--intermediate hosts of the intestinal schistosome--on their productivity]. PMID- 3839895 TI - Analytic evaluation of depths of dose calculation points for external beam radiation therapy treatment planning. AB - A method has been developed to calculate the depth of a point in a patient contour analytically. In this method, the patient contour is approximated by a Fourier series comprising 5-10 terms. The depth of a calculation point is the distance between the calculation point and the intersection of the ray line with the contour line. Depth calculations using this method are compared with calculations using a more conventional method in which the intersection is found by representing the contour as a set of straight-line segments between pairs of contour points. This method gives depth values comparable in accuracy to the more conventional method and computed approximately twice as fast. PMID- 3839897 TI - Uptake of the glutathione conjugate S-(1,2-dichlorovinyl)glutathione by renal basal-lateral membrane vesicles and isolated kidney cells. AB - Transport of the glutathione S-conjugate, S-(1,2-dichlorovinyl)glutathione (DCVG), was studied in renal basal-lateral membrane vesicles and isolated rat kidney cells. The time course of S-(1,2-dichlorovinyl)glutathione uptake in membrane vesicles exhibited an overshoot in the presence of sodium, indicating transport against a concentration gradient. The initial rate of uptake with membrane potential clamped at 0 mV was stimulated 2.5-fold by an inwardly directed gradient of 100 mM sodium chloride. Hyperpolarization of the membrane potential to -60 mV in the presence of sodium stimulated uptake another 2.7-fold, indicating that cotransport of sodium and S-(1,2-dichlorovinyl)glutathione is electrogenic. Sodium-dependent DCVG uptake was inhibited by glutathione, glutathione disulfide, and gamma-glutamylglutamate, but not by the corresponding cysteine S-conjugate, S-(1,2-dichlorovinyl)cysteine, indicating that the transport system is specific for the gamma-glutamyl moiety. Probenecid was also a potent inhibitor of sodium-dependent uptake. S-(1,2-dichlorovinyl)glutathione inhibited sodium-dependent uptake of glutathione in a concentration-dependent manner. Thus, these results show that uptake of DCVG and glutathione is mediated by the same sodium-coupled system. Uptake of S-(1,2-dichlorovinyl)glutathione was also demonstrated in isolated kidney cells; in the presence of sodium, cells accumulated approximately 4-fold more DCVG than in the absence of sodium. This basal-lateral membrane transport system can enable efficient delivery of circulating S-(1,2-dichlorovinyl)glutathione to kidney cells and may, therefore, contribute to its potent and selective nephrotoxicity. In addition, it suggests that renal clearance of glutathione conjugates may include transport from the blood through epithelial cells into the lumen as well as direct filtration through the glomerulus. PMID- 3839896 TI - The design and use of a charting system for automatic record keeping during extracorporeal circulation. AB - A system is described which automatically and on a real-time basis collects physiological data from a patient during the course of cardio-pulmonary bypass. The data are immediately plotted using a multi-color plotter. The system replaces hand-drafted record-keeping, produces a more concise record and allows the perfusionist to attend to more urgent matters. PMID- 3839898 TI - [HMG protein levels in cell nuclei with different proliferative and transcription activities]. AB - It is shown that HMG1 and HMG2 proteins are present in the nuclei of the both actively proliferating and resting lymphocytes in the equally high amount. On the other hand, the same proteins are almost or even completely absent from the nuclei of all kinds of hepatocytes studied: nonproliferating hepatocytes from calf and rat liver and actively proliferating cells from rat regenerating liver and primary hepatoma. These results reveal a tissue specific distribution of HMG1 and HMG2 proteins and do not confirm the suggestions that HMG1 and HMG2 proteins are necessarily involved in chromatin replication or transcription. In contrast, HMG14 and HMG17 proteins have not shown the tissue specificity in our experiments. Besides, the content of these two proteins does not depend on the actual transcriptional activity of the tissues. These results confirm the suggestion that HMG14 and HMG17 proteins are present not only in the genes that are actually being transcribed, but in a broader set of genes. PMID- 3839900 TI - Induced reversion of a Chinese hamster ovary triple auxotroph. Validation of the system with several mutagens. AB - A Chinese hamster ovary triple auxotroph (CHO AUXB1) requires glycine, adenosine, and thymidine (GAT) for growth and survival due to a defect in the structural gene for folylpolyglutamate synthetase (FPGS). This auxotroph and others like it contain less than 3% of the parental amounts of FPGS activity. In order to develop a reverse mutation assay with CHO AUXB1, we determined the optimal conditions for measuring reversion and characterized some of the revertants. We also obtained quantitative mutagenicity data for several direct-acting mutagens for comparison to the parental CHO-S/HGPRT locus. Induced revertants appear in the culture immediately following 20-22 h exposures in +GAT complete medium, indicative of dominant genetic changes. They are maximally expressed after 2 population doublings and can be conveniently selected after 44-48 h of expression growth by plating 1 X 10(6) cells/100-mm dish into -GAT-deficient medium and incubating 12-13 days. Plating reconstruction experiments show that the cloning efficiencies of revertants in -GAT medium are not influenced by the presence of up to 1 X 10(6) CHO AUXB1 cells. Dose-dependent increases above the spontaneous revertant frequency (average = 5 X 10(7)) are induced with cis-Pt(NH3)2Cl2 (14 fold) (but not trans-Pt(NH3)2Cl2), PtCl4(10-fold), Pt(SO4)2 (14-fold), K2CrO4 (8 fold), EMS (10-fold), 4-NQO (53-fold), ICR-191 (60-fold), and ICR-170 (30-fold). All of the revertants that have been isolated are stable to repeated subculturing in -GAT medium; 40 out of 42 that have been analyzed are characterized by an increased 72-h growth incorporation of labeled folate and their extracts contain 5-94% as much FPGS as the original, parental CHO-S line. Spontaneous and induced reversion to the GAT+ phenotype primarily reflects mutations involving the FPGS gene locus. But the re-acquisition by most of the revertants of much less than normal amounts of FPGS activity suggests that they arise from compensatory second site mutations within this gene. Comparison of the mutagenicity patterns of the foregoing compounds as a function of the applied concentration and the relative percent survival reveals some interesting similarities, as well as differences, between the CHO AUXB1/FPGS and CHO-S/HGPRT loci. In particular, the FPGS locus is rather insensitive to EMS (or other simple alkylating agents). However, it seems to be quite susceptible to reversion by other chemicals that are known to react selectively with guanine bases in DNA. CHO AUXBI is a useful supplemental mammalian assay system for assessing quantitatively the generally weak mutagenic activities of metal compounds. PMID- 3839899 TI - The effect of vitamin C on oxygen radical-induced sister-chromatid exchanges. AB - We studied the effects of vitamin C (sodium ascorbate) on the genotoxicity of oxygen radicals to tissue culture cells. Chinese hamster ovary cells (CHO cells), when exposed to an enzymatic oxygen radical generating system (xanthine oxidase plus hypoxanthine), develop increased numbers of sister-chromatid exchanges (SCEs). Inclusion of ascorbate in these incubations resulted in significant, but variable effects. In some cases, ascorbate (less than 0.1 mM) was protective and fewer SCEs were produced. In others, significant augmentation of oxygen radical induced SCEs occurred. These experiments illustrate the complexity of the interactions of ascorbate in biologic systems and the difficulty of predicting a desirable or harmful effect. PMID- 3839901 TI - Increased plasma 1,25-dihydroxyvitamin D in infants with hypercalcemia and elfin facies. PMID- 3839902 TI - Academics barred from P4 lab. PMID- 3839903 TI - Regressive events in the postnatal development of association projections in the visual cortex. AB - In newborn kittens, neurones in area 17 of the visual cortex projecting to area 18 are distributed in bands of uniform density across the superficial layers (laminae II, III and the upper part of IV) and the deep layers (V and VI). During weeks 2 and 3 postnatal, the cells of origin of this association pathway become mainly restricted to discrete, dense clusters, approximately 600 microns from centre to centre, in the upper layers, with intervening zones free of association cells, as in the adult cat. We have used retrogradely transported, long-lasting neuronal markers to investigate this developmental refinement of the pattern of cortico-cortical connections. The results, reported here, indicate that axonal retraction plays a significant part in the maturation of the clustered organization of superficial layer neurones projecting to area 18, but that cell death may also be a factor in the elimination of the inappropriate projection from the deep laminae. PMID- 3839904 TI - Diversity and structure of genes of the alpha family of mouse T-cell antigen receptor. AB - We have analysed 19 complementary DNA clones encoding the alpha-chain of the T cell antigen receptor derived from thymic transcripts, and find that 15 of them contain partial or complete variable (V alpha) genes. Seven of these genes cross hybridize to over 40 germline V alpha gene segments in Southern blot analyses. Of the 19 joining (J alpha) sequences examined, 18 seem to be encoded by distinct gene segments, hence the repertoire of J alpha gene segments is much larger than those of the immunoglobulin or T-cell receptor beta-chain gene families. We suggest that the variable domains of immunoglobulins and T-cell antigen receptors are similar in structure. PMID- 3839905 TI - Concentration of acetylcholine receptor mRNA in synaptic regions of adult muscle fibres. AB - Acetylcholine receptors (AChRs) are highly concentrated in the small fraction (approximately 0.1%) of the skeletal muscle fibre surface that comprises the postsynaptic membrane of the neuromuscular junction (Fig. 1a). In adult murine muscle, for example, AChRs are packed at a density of over 15,000 per micron2 in postsynaptic membrane, whereas their density is less than 30 per micron2 in extrasynaptic membrane. Because synaptic AChRs turn over they must be replaced, and it is interesting to consider where the new AChRs that maintain synaptic aggregates are synthesized. One possibility is that AChRs are synthesized uniformly along the length of the multinucleated muscle fibre; in this case, AChRs might be redistributed to or selectively stabilized at the synapse, as probably occurs during synapse formation. Alternatively, AChRs might be preferentially synthesized near synapses, a possibility that would suggest that innervation can influence not only where AChRs are inserted or accumulate but also where they are synthesized. In support of this second possibility, we report here that AChR messenger RNA is more abundant near to than far from synapses in adult muscle fibres. PMID- 3839906 TI - Heterogeneity of membrane phospholipid mobility in endothelial cells depends on cell substrate. AB - Cellular growth control and differentiation have been shown to be dependent on both cell-cell and cell-substrate contacts. Interactions of cells with extracellular material are critical events during embryonic development and maintenance of tissue function. Plasma membrane receptors have been described for components of the extracellular matrix such as fibronectin, laminin and various collagen types. Transmembrane signalling has been shown to be influenced by the lateral mobilities of the plasma membrane constituents. The interaction of cells with their extracellular matrix could thus have a significant effect on the mobility properties of the plasma membrane components. Here we have studied the dynamic properties of fluorescent membrane phospholipids in bovine endothelial cells using fluorescence recovery after photo-bleaching measurements. At this molecular level we find that the phospholipid lateral diffusion coefficient is dependent on the substrate upon which cells are allowed to adhere (collagen, fibronectin or a natural basement membrane) and on the topography of the cell (basal versus apical plasma membrane). PMID- 3839907 TI - Chromosomal localization of a unique gene by non-autoradiographic in situ hybridization. AB - During the past few years, several methods have been developed for the detection of specific nucleic acid sequences by in situ hybridization using non-radioactive labels such as fluorochromes, cytochemically detectable enzymes and electron dense markers. These methods are preferable to autoradiography in terms of speed of performance and topological resolution. Their limited sensitivity, however, has so far restricted their use to the detection of repeated sequences. Here we report single gene detection with a procedure using 2-acetylaminofluorene (AAF) modified probes, immunoperoxidase cytochemistry and reflection-contrast microscopy. We confirmed the autoradiographic data on the localization of the human thyroglobulin (Tg) gene to the distal end of the long arm of chromosome 8. A mixture of cosmid cHT2-derived subclones of the 3' part of the Tg gene, 22.3 kilobase pairs (kbp) in total, was used as a hybridization probe. This procedure can be used to map other unique sequences, if genomic clones are available from which clones with an appropriate amount of inserts can be isolated. PMID- 3839909 TI - Sexual orientation and sexually transmitted disease. PMID- 3839910 TI - Treatment of cerebrospinal fluid and syringosubarachnoid shunt infection with systemic and intrathecal antibiotics. AB - We present a case of a patient with two preexisting Silastic syringosubarachnoid shunt catheters who developed Enterobacter meningitis. The infection was treated successfully with systemic and intrathecal antibiotics without removal of the catheters. With careful sequential clinical and laboratory monitoring, even this type of cerebrospinal fluid shunt infection can be eradicated without catheter removal and replacement. PMID- 3839911 TI - Effect of simultaneously ingested milk on phenytoin bioavailability. AB - Adverse gastrointestinal symptoms from milk may reduce the bioavailability of phenytoin. In a prospective crossover study, we studied the effect of simultaneous ingestion of phenytoin and milk in 12 patients with partial epilepsy and no adverse gastrointestinal symptoms. Serum phenytoin levels were measured at the start of the study and after 2 weeks. Patients then switched regimens, and a third phenytoin level was determined 2 weeks later. Serum phenytoin levels were similar for patients taking phenytoin with either milk or water. PMID- 3839908 TI - Characterization of 64-, 123- and 182-base-pair exons in the mouse alpha 2(IV) collagen gene. AB - Genes encoding types I, II and III collagens (fibrillar collagens) contain many discrete-size exons, most of them 54 base pairs (bp) long, in addition to the 45 , 99-, 108- and 162-bp exons. It has been suggested that these collagen genes evolved from an ancestral coding unit of 54 bp. Type IV collagen is a specific component of basement membranes and contains two genetically distinct polypeptides, the alpha 1(IV) and alpha 2(IV) chains. It differs from the types I III collagens in that it contains interruptions in the Gly-X-Y repeat sequence and does not form ordered fibrillar structures. We have isolated complementary DNA and genomic clones for the mouse alpha 2(IV) collagen chain and here characterize 64-, 123- and 182-bp exons in the Gly-X-Y coding domain of the gene. The data suggest that the alpha 2(IV) collagen gene may have evolved differently from those encoding the fibrillar collagens. PMID- 3839912 TI - [A computerized point system in the prognostic study of critical surgical patients]. PMID- 3839913 TI - [Anti-ulcer therapy in early gastric cancer]. PMID- 3839914 TI - [Proposal of a software program as a model of fetal medicine of the preventive type]. PMID- 3839915 TI - [Radiotherapy of carcinoma of the breast]. PMID- 3839916 TI - [Radio-chemotherapy integration]. PMID- 3839917 TI - Neuropeptide Y innervation of the rodent pineal gland and cerebral blood vessels. AB - Neuropeptide Y (NPY)-immunoreactivity has been shown to be present in sympathetic nerve fibres in the rat pineal gland and a dense network of NPY-containing nerve fibres demonstrated to innervate the rat circle of Willis. The NPY content of the major rabbit intracranial arteries was determined by radioimmunoassay and maximal levels found in the anterior cerebral arteries. After bilateral superior cervical ganglion (SCG) removal, no NPY was detectable in the rat pineal gland; however, significant NPY-immunoreactive nerve fibres remained throughout the rat vertebrobasilar arteries, and 47% of the assayable NPY was still present. Neither intraventricular 6-hydroxydopamine (6-OHDA) nor the combination of 6-OHDA treatment and SCG removal resulted in any further loss of NPY. In conclusion, the NPY innervation of the pineal gland originates exclusively from the peripheral sympathetic nervous system. In contrast the caudal portion of the rat circle of Willis contains NPY fibres which are resistant to sympathectomy. PMID- 3839918 TI - Subcellular distribution of the immunoreactive peptide histidine isoleucine in the rat brain and release from synaptosomes in vitro. AB - Subcellular fractionation studies of rat brain homogenate revealed that peptide histidine isoleucine-like immunoreactivity (PHI-LI) was enriched in synaptosomal preparations. PHI-LI was released by high potassium concentrations from synaptosomal pellets incubated in vitro. These results suggest a possible physiological role of PHI in the central nervous system as a neurotransmitter or modulator of synaptic function. PMID- 3839919 TI - Retinal complications following YAG laser capsulotomy. AB - Eighteen patients (19 eyes) developed retinal complications following YAG laser capsulotomy. Complications included one retinal flap tear, two macular holes, six eyes with cystoid macular edema, and ten retinal detachments. The retinal complications resulted from opening the capsule and were not a specific complication of the YAG laser. PMID- 3839920 TI - Neodymium Q-switched YAG laser lysis of iris lens synechiae. AB - The feasibility of Q-switched Nd: YAG synechiolysis in phakic patients without visible damage to the lens has been demonstrated. The value of this procedure in the management of glaucoma and its advantages over argon laser photomydriasis is discussed. PMID- 3839922 TI - The proenkephalin A fragment metorphamide shows supraspinal and spinal opioid activity in vivo. AB - Metorphamide (Tyr-Gly-Gly-Phe-Met-Arg-Arg-Val-NH2) a novel amidated octapeptide fragment of proenkephalin A was synthesized, purified and subsequently shown to inhibit the reflex contractions of the rat urinary bladder following intracerebroventricular and spinal intrathecal microinjections. The effects of metorphamide were consistently antagonized by naloxone but not by the delta opioid receptor antagonist ICI 174,864. Comparison of metorphamide with other proenkephalin A fragments suggested that the activity of this peptide was not due to in vivo processing to other active fragments. These data suggest that metorphamide has potent in vivo mu-opioid activity but little delta-opioid receptor activity. PMID- 3839921 TI - Molecular basis of plant viral virulence; the complete nucleotide sequence of an attenuated strain of tobacco mosaic virus. AB - The total genome sequence of L11A, an attenuated strain of tobacco mosaic virus (TMV), has been determined. This strain is able to multiply in tomato plants without inducing any remarkable symptoms, but to protect them from later infection with virulent TMV strains. When compared with the recently published total genome sequence of TMV L (the virulent ancestral strain of L11A) ten base substitutions were found in the L11A genome. Seven of these occurred in the third letters of in-phase codons and did not influence amino acids. Only three, which were in the common reading frame for both the 130K and 180K proteins, resulted in amino acid changes. Together with the result of the partial sequence of RNA of L11, an intermediate strain in sequential isolation from L to L11A, it is observed that one base at the nucleotide position 1117 is changed from L to L11 and two bases at the positions 2349 and 2754 are changed from L11 to L A11. PMID- 3839923 TI - Risk factor analysis among men referred for possible acquired immune deficiency syndrome. AB - Responses to a lifestyle questionnaire among 13 patients with Kaposi's sarcoma and 18 with an opportunistic infection were compared with those of 29 symptom free referred individuals. Odds ratios (OR) with 95% confidence limits were calculated as an estimate of risk. Significantly elevated odds ratios (P less than 0.05) were found for cigarette smoking (OR = 3.4), marijuana use (OR = 3.7), nitrite use (OR = 5.5), frequenting bathhouses (OR = 7.6), prior syphilis (OR = 3.4), and fist-rectal sexual practices (OR = 3.5). A response gradient for the risk estimates was found for marijuana use (OR = 2.7 for occasional, OR = 4.3 for frequent use); nitrites (OR = 4.0 for occasional; OR = 6.3 for frequent use); and prior syphilis (OR = 2.9 for one to two previous infections and 9.0 for three or more). We believe the evidence is now sufficient to recommend preventive practices which may reduce the male homosexual's risk for developing acquired immune deficiency syndrome, Kaposi's sarcoma, and/or opportunistic infections. These include cessation of cigarette smoking, marijuana use, and nitrite inhalation; reduction in number of anonymous sexual partners to decrease risk of sexually transmitted diseases; and avoidance of fisting. PMID- 3839924 TI - Effect of variable glutathione peroxidase activity on H2O2-related cytotoxicity in cultured aortic endothelial cells. AB - Primary cultures of porcine aortic endothelial cells were used to assess the effects of O2 intermediates produced by 10-40 mU/ml xanthine oxidase (XO; +2 mM hypoxanthine) or 25-100 mU/ml glucose oxidase (GO; +5 mM glucose). A 60-min incubation in the presence of the enzyme systems resulted in a dose-dependent toxic effect with evidence of cytolysis (increased LDH release) and cell loss (decrease in DNA and protein content), when these indexes were measured 24 hr after completion of the enzyme reaction. Decreased [3H]thymidine incorporation into DNA was the most sensitive index of cell dysfunction for both enzyme systems. The effects of various scavengers and enzymes indicated that H2O2 was the main O2 intermediate involved in the cytotoxicity resulting from the XO hypoxanthine reaction. Increased glutathione peroxidase activity associated with the addition of 2 X 10(-7) M selenomethionine to culture medium had a partial protective effect which could be related to an increased rate of H2O2 degradation. Evidence for increased DNA synthesis after injury was found in cells previously exposed to XO-hypoxanthine, the degree of increase in [3H]thymidine incorporation being dependent on the intensity of the initial cytotoxicity. Cultured endothelial cells provide a useful tool to evaluate the role of O2 intermediates in endothelial cell injury, to test the effects of protective agents, and to study the repair process. PMID- 3839925 TI - Isolation and structure determination of daigremontianin, a novel bufadienolide from Kalanchoe daigremontiana. PMID- 3839926 TI - Contraceptive efficacy and hormonal profile of ferujol: a new coumarin from Ferula jaeschkeana. PMID- 3839927 TI - Cruciate ligament injury: diagnostic difficulties in the presence of meniscal injury. AB - During knee arthrography, the appearance of a mass within the intercondylar notch on the flexed lateral stress radiograph usually indicates a torn cruciate ligament. This mass may also be produced by a torn or peripherally separated meniscus, usually the lateral, that displaces during flexion to lie adjacent to and to obscure the outline of the cruciates. Recognition of this phenomenon is important, both in avoiding the erroneous diagnosis of a cruciate tear and in alerting the arthrographer to the possibility of a peripheral meniscal separation when the ligaments are obscured by a mass. PMID- 3839928 TI - Meniscal tears of the knee: evaluation by high-resolution CT combined with arthrography. AB - The knees of 27 patients with evidence of meniscal tears were examined with high resolution computed tomography (HRCT) immediately following double-contrast arthrography. The arthrograms and postarthrogram HRCT scans were compared for their display of anatomic and pathologic detail. The anatomy of the semilunar cartilage and surrounding structures was more clearly outlined on the HRCT scans. The HRCT scans also enabled differentiation of the menisci from the surrounding anatomic parts (popliteal tendon sleeve and popliteal cyst) and good visualization of the relationship of torn meniscal fragments. Postarthrography HRCT should be used as a complement to arthrography. With this additional information, arthroscopists can plan the most appropriate surgical treatment. PMID- 3839929 TI - Knee arthrography today. AB - Three recent studies on intraarticular knee structures are considered-one on an advance in conventional knee arthrography and two on use of computed tomography in evaluating knee menisci. A resurgence of knee arthrography is predicted. PMID- 3839930 TI - Meniscal lesions of the knee joint: CT diagnosis. AB - Computed tomography (CT) resulted in a diagnostic accuracy of 89.2% and 96.1% for medial and lateral meniscal lesions, respectively, in 109 patients who underwent surgery after a direct CT study of the knee joint for a clinically suspected meniscal lesion. The meniscal lesions were the only pathologic condition found in 59 patients, while in 35 patients they were associated with various lesions of the cruciate ligaments (31 cases) and collateral ligaments (15 cases) and with cystic bursitis (6 cases). In the remaining 15 patients, the menisci were normal, but in eight of these cases, lesions of other knee joint structures were present. If meniscal lesions are clinically suspected, direct CT study of the knee joint may be considered the elective radiologic diagnostic method, rather than the more invasive arthrography. It may also be helpful in selecting patients for diagnostic and therapeutic arthroscopy. PMID- 3839931 TI - Perioperative and conventionally timed chemotherapy in operable breast cancer. PMID- 3839933 TI - [Selection of transplant recipients using a personal computer]. PMID- 3839932 TI - Preoperative adjuvant chemotherapy (neoadjuvant) for carcinoma of the breast: rationale and safety report. PMID- 3839934 TI - [Computer management of patients]. PMID- 3839935 TI - [Computer management in ear surgery]. PMID- 3839936 TI - Hyperthyroidism in the elderly. I. Clinical manifestations. AB - The most frequent clinical manifestations in 100 elderly hyperthyroid patients entered in our study were: weight loss (83%), palpitations (85%), nodular goiter (71%) and tremor (74%). Association of weight loss with anorexia and constipation was found in 6% of the patients. The apathetic form of thyrotoxicosis was present in 2% of our patients. Thyrotoxic atrial fibrillation and thyrotoxic heart disease were found in 42% and 51% respectively. PMID- 3839937 TI - Molecular cloning of complementary DNA for the alpha subunit of the G protein that stimulates adenylate cyclase. AB - A complementary DNA clone encoding the alpha subunit of the adenylate cyclase stimulatory G protein (Gs) was isolated and identified. A bovine brain complementary DNA library was screened with an oligonucleotide probe derived from amino acid sequence common to known G proteins. The only clone that was obtained with this probe has a complementary DNA insert of approximately 1670 base pairs. An antibody to a peptide synthesized according to deduced amino acid sequence reacts specifically with the alpha subunit of Gs. In addition, RNA that hybridizes with probes made from the clone is detected in wild-type S49 cells; however, cyc- S49 cells, which are deficient in Gs alpha activity, are devoid of this messenger RNA. PMID- 3839938 TI - Factors related to infertility in the United States, 1965-1976. AB - Although the overall rate of infertility among American women of reproductive age remained fairly constant between 1965 and 1976, the percentage of young black women who were infertile increased very sharply. In 1976, 18% of black women of reproductive age were infertile, whereas only 9% of white women of the same age were infertile. With use of national data bases, the relationships between sexual activity, complications of pregnancy, sexually transmitted diseases, pelvic inflammatory disease, use of contraception, and infertility were examined. Available evidence shows a strong association between sexually transmitted diseases, pelvic inflammatory disease, and infertility trends. Our projections indicate that sexually transmitted diseases operating through pelvic infections account for much of the race differential in infertility as well as for one-half to one-third of the increase. In 1976 5-8% of 20-29-year-old black women were estimated to suffer infertility attributable to sexually transmitted diseases. Among white women the estimated incidence of infertility caused by sexually transmitted diseases was 0.7-1%. PMID- 3839939 TI - Urban clusters of sexually transmitted diseases in the city of Seville, Spain. AB - To test the hypothesis that there is an increased risk for sexually transmitted diseases in certain geographic areas, 613 patients diagnosed as having sexually transmitted diseases in Seville, Spain, were studied in relation to their address. Increased risks of gonorrhea (relative risk, 3.72), syphilis (relative risk, 3.32), Chlamydia trachomatis infections (relative risk, 3.41), and the three conditions together (relative risk, 3.52) were found in district 1, which represents the core of transmission and the central area of old Seville. These findings represent the first description of spatial clusters for syphilis and Chlamydia trachomatis infections. PMID- 3839940 TI - [Non-Hodgkin's lymphoma in children. Study of 30 patients at the Caracas University Hospital]. PMID- 3839941 TI - Histologic changes in rat brain tissue caused by neodymium-yttrium aluminum garnet laser irradiation. II. Cerebellum. AB - Histologic changes after neodymium-yttrium aluminum garnet laser irradiation were evaluated in the rat cerebellum. Irradiation of 60 W (corresponds to 45.2 W/mm2) to the posterior fossa was dangerous even in adult rats, although this value was safe for the rat cerebral hemisphere as previously reported. The histologic changes caused by neodymium-yttrium aluminum garnet laser irradiation were similar to those caused by thermal energies. To the adult rat cerebellum, 45 W (35.2 W/mm2) can safely be applied. For the further use of the neodymium-yttrium aluminum garnet laser in neurosurgery, our findings should be taken into consideration. PMID- 3839942 TI - Primary immunocytoma of the lung: the diagnostic value of bronchoalveolar lavage. PMID- 3839943 TI - Association of factor V activity with membranous vesicles released from human platelets: requirement for platelet stimulation. AB - The membrane-associated factor V-like activity (platelet factor 1, PF1) and the phospholipid-like catalytic surface activity (platelet factor 3, PF3) were studied in human platelets from normal and two factor V-deficient donors. Collagen stimulation or mechanical disruption of gel-filtered platelets was necessary for the expression of significant amounts of PF1 and PF3. Stimulation was also necessary for the uptake of factor V or Va by PF1-deficient platelets from the factor V-deficient donors. The activity of PF1 was also generated by association of factor V or Va with membrane-rich fractions obtained by gel filtration of the supernatant from collagen-stimulated or frozen-thawed PF1 deficient platelets. The amount of PF1 obtained by such all-or-none binding experiments was directly proportional to the amount of PF3 already expressed in the platelet preparation. These data have been summarized in terms of a hypothesis which views PF1 and PF3 to be activities associated with membranous vesicles released from platelets only after stimulation. PMID- 3839945 TI - Low lead exposure from birth produces behavioral toxicity (DRL) in monkeys. AB - Cynomolgus monkeys (Macaca fascicularis) were dosed from birth with 100, 50, or 0 micrograms/kg/day of lead. This treatment resulted in blood lead concentrations of 25, 15, or 3 micrograms/dl, respectively, before withdrawal of infant formula at 200 days of age, and steady-state concentrations of 13, 11, or 3 micrograms/dl. At approximately 3 years of age, monkeys were tested on an intermittent schedule, differential reinforcement of low rate (DRL). This schedule required the monkey to withhold responding for a specific time in order to be reinforced. The performance of treated monkeys did not improve as rapidly as controls as measured by increase in reinforced responses and decrease in nonreinforced responses during initial sessions. In addition, treated monkeys exhibited greater between session variability during terminal sessions. These effects were dose related. The results of the present experiment in conjunction with those of previous experiments with this same group of monkeys suggest that blood lead concentrations presently found routinely in the human population may produce neurotoxicity. PMID- 3839944 TI - Expression of coagulant activity in human platelets: release of membranous vesicles providing platelet factor 1 and platelet factor 3. AB - The relationship between the appearance of membrane-associated factor V-like activity (platelet factor 1, PF1) and phospholipid-like catalytic activity (platelet factor 3, PF3) has been examined, in vitro, in collagen-stimulated, human platelets. Both activities increased 7 fold upon collagen treatment relative to stirred controls. After sedimentation of stimulated platelets, 31% of total PF1 and 41% of PF3 remained in the supernatant fraction. PF1 eluted from a Sepharose CL-4B column in the same void volume fractions as PF3, phospholipid, and vesicular particles. These fractions had roughly 100 fold (lipid basis) or 1000 fold (protein basis) enhanced specific activity when compared to the stimulated platelet suspension. Freeze-fracture electron microscopy demonstrated that these void volume fractions contain two populations of membranous vesicles (80-200 nm and 400-600 nm in diameter). Upon centrifugation of the void volume fractions, PF1 and PF3 activities, phosphate-containing material, and ultraviolet absorbing material all sedimented at the same rate, indicating that PF1 and PF3 are activities associated with one or both of the platelet-derived vesicle populations. Finally, we examined the effects of inhibitors on the appearance of PF1, PF3, platelet factor 4, total intrinsic factor V activity, and serotonin as well as on platelet aggregation. These studies suggest that the collagen stimulated release of PF1 and PF3 is not coupled to either platelet aggregation or PF4 release but is probably a separate phase of the release reaction. PMID- 3839946 TI - Identification of urinary metabolites of 2,4,6-trinitrotoluene in rats by liquid chromatography-mass spectometry. AB - Metabolites of 2,4,6-trinitrotoluene (TNT) were found in the urine of rats fed with TNT. The urine extracts were analysed by liquid chromatography-mass spectrometry (LC-MS). Metabolites found included TNT itself as well as 2-amino 4,6-dinitrotoluene, 4-amino-2,6-dinitrotoluene and 2,4-diamino-6-nitrotoluene, indicating that reduction processes are responsible for the formation of these metabolites. PMID- 3839947 TI - [Pregnancy and fetal development after therapy of Hodgkin's disease]. AB - The post-therapeutic pregnancy data of 122/244 women aged until 40 years who had been treated primarily in Freiburg i. Br. for Hodgkin's disease between 1949 and 1981 were obtained by an inquiry based on questionnaires. All of the 122 patients of the questionnaire group were in remission. 39 out of them (32%) became pregnant one or more times; 38/94 (40%) of these had been irradiated down to the promontory and 1/17 (6%) had been submitted to an irradiation including the pelvis with ovariopexy. The resulting 63 post-therapeutic pregnancies leaded to 41 normal births (65%), three premature infants (5%), two viable children suffering from malformations (3%) and five spontaneous abortions (8%). An interruption was performed in twelve cases (19%). There were no significant divergences from distributions of normal populations with regard to the percentages of normal births and negative variants, even under consideration of comparable literature reports. Neither in the questionnaire group nor in the group of 122 patients whose gynecologic data could only be evaluated by means of the medical records available, there was any indication suggesting an increased risk of morbidity or mortality. PMID- 3839948 TI - CNS reactions at 51 ATA on trimix and heliox and during decompression. AB - Two groups of divers (Group A and B) were compressed to 500 msw with trimix (n = 3) and heliox (n = 3). After 4 d at saturation depth Group A had a gas change to heliox. Both groups were followed with repeated neuropsychological and neurological tests during compression, at stable intermediate depths and at saturation depth. There were marked high pressure nervous syndrome effects during compression for both groups. Only tremor was inhibited by the nitrogen. In addition Group A was impaired due to nitrogen narcosis. During trimix and heliox saturation there was only some recovery in the EEG. Group B had a sustained high tremor during the saturation. On visuomotor and cognitive functions Group B performed up to predive level on the 3rd d at saturation while Group A was heavily impaired during the whole trimix saturation period. Although dizziness and tremor were the main symptoms in Group B, Group A reported concentration trouble, euphoria, and upset stomach during the saturation phase. Minor changes occurred in the EEG during the gas change. There was, however, a marked increase in postural tremor and recovery on cognitive tests relating to the elimination of the nitrogen. Up to the completion of the gas change no severe symptoms were reported. Six hours after the gas change, severe symptoms occurred with visual and auditory hallucinations and myoclonic jerks as the dominant characteristics. Some symptoms lasted for 12 h. During decompression there was a steady normalization in both groups. PMID- 3839951 TI - Automation of laboratory instrumentation--recent achievements in the Stefan S. Nicolau Institute of Virology. AB - An automated system consisting of an SPF-500 spectrofluorometer interfaced to a Felix-M18 microcomputer was provided with a series of additional accessories benefitting from the inputs and outputs through the interface. An adequate set of programs for computer-controlled operations was developed. The system has allowed the performance of more than 15,000 absorption, emission and light scattering determinations. The role of interfacing to low cost computers in the automation of presently available laboratory instrumentation is discussed. PMID- 3839950 TI - Thymic lymphosarcoma with bony metaplasia in a cat. PMID- 3839949 TI - [Functional recovery after meniscectomy of the knee. A retrospective study]. PMID- 3839952 TI - Correct sequence for the major nucleocapsid protein mRNA of respiratory syncytial virus. AB - A nucleotide sequence for the mRNA of the major nucleocapsid (N) protein gene of respiratory syncytial virus was reported previously (N. Elango and S. Venkatesen, 1983, Nucleic Acids Res. 11, 5941-5951). However, we have been unable to confirm part of this sequence as N mRNA-specific and suggest that the published sequence represents that of an aberrant chimeric transcript. Here we present an alternative sequence for the N mRNA and provide data supporting its authenticity. The corrected N mRNA sequence contains 1197 rather than 1427 nucleotides exclusive of poly(A), and encodes a protein of 391 rather than 467 amino acids. The calculated molecular weight for the 391-amino acid protein described by the sequence presented here is 42,600, in agreement with the molecular weight of 42,000 determined for the RS viral N protein by gel electrophoresis. In addition, we present sequence data from dicistronic RNAs that span the junction between the 1B protein and N cistrons, and the junction between the N and phosphoprotein (P) cistrons. PMID- 3839953 TI - [Use of thymalin in the complex treatment of patients with cancer of the uterus]. AB - The results of a clinico-immunologic study of thymalin as a component of complex antitumor treatment of 21 cases of cancer of corpus uteri pointed to a pronounced immunomodulating action of the drug on T-cell-mediated immunity. It was inferred that thymalin should be used for immunocorrection in complex treatment for the said neoplasms provided T-cell-mediated immunity is monitored. PMID- 3839954 TI - Nonoperative management of acute idiopathic colonic pseudo-obstruction (Ogilvie's syndrome). AB - In a four-year experience (35 episodes in 27 patients) with the use of medical and colonoscopic therapy for acute idiopathic colonic pseudo-obstruction, we have found that initial conservative measures followed by flexible colonoscopy in nonresponders are effective and safe. Contrary to previous reports, an initial nonoperative approach including colonscopy is frequently successful and the outcome with this approach is not adversely affected even in the few patients who eventually require surgical decompression. PMID- 3839955 TI - HLA typing in hashitoxic periodic paralysis. PMID- 3839956 TI - The fate of 4-cyano-N,N-dimethylaniline in mice: the occurrence of a novel metabolite during N-demethylation of an aromatic amine. AB - 4-Cyano-N,N-dimethylaniline (CDA), when administered as a single oral dose to mice (18.5 mg/kg), was rapidly absorbed and eliminated. The major route of elimination was the urine (78% dose in 24h). The residues in the tissues 48 h after dosing, as microgram equiv. of CDA/g, were: liver, 0.19; kidney, 0.10; testes, 0.01; fat, 0.10; blood, 0.02. The major metabolite was 2-amino-5 cyanophenyl sulphate, with the N-methyl analogue as a minor metabolite. A novel metabolite, N-acetyl-S-(4-cyanoanilinomethyl)cysteine, was also a significant urinary metabolite, indicating that an electrophilic intermediate is generated during the N-demethylation of CDA. The implications are that N-demethylation may have important toxicological consequences. PMID- 3839958 TI - [Biomechanical prerequisites for the leap-off of Senegal galagos]. PMID- 3839957 TI - 4,5-Dimethylthiazole-N-oxide-S-oxide: a metabolite of chlormethiazole in man. AB - The metabolic fate of chlormethiazole in healthy male subjects has been investigated following the oral administration of a single dose of chlormethiazole edisylate. Five urinary C-oxidation metabolites were identified and shown to be identical with previously reported metabolites. A novel metabolite, of molecular formula C5H7NO2S, was shown by trimethylsilylation, deuterium exchange, reduction studies and by its i.r., n.m.r. and mass spectrum, to be 4,5-dimethylthiazole-N-oxide-S-oxide. This is the first reported metabolite which involves the oxidation of the two heterocyclic atoms in aromatic rings. The formation and thermal stability of the compound is ascribed to resonance stabilization. PMID- 3839959 TI - [Discrete and continuous mathematical models of intraspecific behavior in the pharmacoethology of the mouse]. AB - An algorithm and software library were compiled in order to interpret the intraspecies agonistic animal behaviour in terms of discrete or continuous mathematical model. Applied aspects of the use of mathematical models in pharmacoethology were shown on concrete examples. The ways of construction of standard prototypes, and the integrative criteria of psychotropic drugs action were developed. The possibility was shown of identification of unknown substances by comparing with standard drugs by calculating the norm of standardized matrices. PMID- 3839960 TI - [Intrathecal morphine administration in pain therapy following extensive gynecologic operations. Clinical study]. AB - Experiences with intrathecal morphine analgesia in 36 patients undergoing Wertheim-Held hysterectomy are reported. Postoperative painrelief, bloodgas parameters (pO2, pCO2, pH, SBE, SAT), analgetica demand, side-effects are compared with 23 patients of a control group. 95% of patients with intrathecal morphine analgesia were postoperatively without pain for at least 24 hours. The postoperative demand of analgetic drugs could be reduced to less than 50% in the first 48 postoperative hours. Besides not significant decreasing of the pH-value no changing of the bloodgases was observed. The incidence of nausea, vomiting and headache were not increased. Considering the not in all cases avoidable development of a respiration insufficiency even after a little dosis of morphine this method seems to be a suitable treatment of postoperative pain which enables the early mobilisation of the patients. PMID- 3839961 TI - [Clinical picture in patients with 46,X,i(Xq) karyotype. Are there differences from Turner syndrome?]. AB - Clinical presentation in 2 patients with 46,X,i(Xq)-Karyotype are described. In both cases no mosaicism could be detected. The two patients show the classical features of gonadal dysgenesis: short stature, sexual infantilism and primary amenorrhea due to streak ovaries. Other characteristic somatic manifestations of the Turner syndrome such as webbing of the neck, however, were missing. In one of the two cases a Hashimoto's thyroiditis was present, which has been repeatedly reported before in the literature in cases with 46,X,i(Xq)-karyotype. PMID- 3839962 TI - Analysis of linkage between HLA haplotype and susceptibility to Graves' disease in multiple-case Chinese families in Hong Kong. AB - Data from 10 Chinese families in Hong Kong with multiple cases of thyrotoxic Graves' disease were analysed to determine whether genes predisposing to Graves' disease are linked to the HLA region. No evidence was obtained in favour of either dominant or recessive inheritance of HLA-linked susceptibility to Graves' disease. Six of 10 affected parent-offspring combinations had haplotypes containing HLA Bw46 which is more than would be expected from the antigen frequency of Bw46 in normal controls. It is concluded that HLA-associated genes play a role in determining disease susceptibility but that other factors are involved in determining disease expression. PMID- 3839963 TI - Elevated metabolic clearance rate of 1 alpha,25-dihydroxyvitamin D3 in hyperthyroidism. AB - Metabolic clearance rate (MCR) and daily production rate (DPR) of 1 alpha,25 dihydroxyvitamin D3 (1,25(OH)2D3) were measured in 7 hyperthyroid patients and 8 control subjects after a single injection of tritiated 1,25(OH)2D3. Using a bicompartmental analysis, MCR of 1,25(OH)2D3 was found to be significantly higher in hyperthyroid than in control subjects (11.5 +/- 4.4 vs 5.9 +/- 2.4 ml/min (SD), P less than 0.01). No significant difference in plasma 1,25(OH)2D and DPR of 1,25(OH)2D3 was demonstrated. MCR was again measured 1 month after initiation of treatment in 4 hyperthyroid patients and remained elevated. In 2 of these patients, MCR was once more determined 6 months later and had declined towards normal. No correlation was found between MCR and DPR and either plasma calcium, phosphate, immunoreactive PTH, 1,25(OH)D and T3 values. In conclusion, MCR of 1,25(OH)2D3 is elevated in hyperthyroidism, but this finding is probably unrelated to the effect of thyroid hormones on bone metabolism. PMID- 3839964 TI - The MAR test as immunologic screening of male infertility. AB - The mixed antiglobulin reaction was developed for detection of platelet antibody and then modified to demonstrate antibodies on spermatozoa. We have used the test as a simple method of screening for antibodies in the male, performing the test during the analysis of semen samples. We evaluated 320 samples from partners of sterile couples attending our Sterility centers. The IgG MAR test was not applicable to 82 samples because the sperm concentration and sperm motility was not sufficient. In all uncertain, positive and firmly positive cases of MAR test and in 50 negative cases of IgG MAR test, as control group we performed MAR test for IgA. We correlate our results with the sperm test penetration, SCMC test and identification of antisperm antibodies test and Isojima test for sperm immobilizing antibodies. Our results reconfirm the utility of IgG MAR test as screening test for the presence of antibodies but its positiveness requires the performance of IgA MAR test and, if necessary, of other tests in order to diagnose sterility depending on immunologic factors. PMID- 3839965 TI - [Intrathecal anesthesia in metastatic pain of urologic origin. A new technic]. PMID- 3839966 TI - Isolation and characterization of the apolipoprotein genes. AB - These types of studies lay the foundation for understanding the human apolipoproteins at the genetic level. In addition, through a few specific examples, we have already shown evidence at the DNA level that lesions in apolipoprotein genes can play a role in human atherosclerosis. This work is in its infancy but, in the future, we hope it will have a major impact on our ability to understand genetic susceptibility to atherosclerosis in the general population. PMID- 3839967 TI - Leukaemic neoplasia in free-living mammals in Denmark. PMID- 3839968 TI - Glucocorticoid-induced bone disorders: nature and mechanisms of glucocorticoid induced bone disorders in dogs. AB - Treatment with 5.0 mg/kg of hydrocortisone twice a week for 12 months led to the significant decreased levels of serum 25-hydroxyvitamin D and 1,25 dihydroxyvitamin D. A histomorphometric evaluation of iliac cortical and trabecular bones was carried out using tetracycline double labelling method and tetrachrome staining. The excessive hydrocortisone treatment produced poor or no fluorescent labelling in the iliac cortex, indicating the absence of any newly established bone. Our present data demonstrate that excessive glucocorticoid may induce bone disorder in dogs by indirectly causing the decrease of serum 1,25 dihydroxyvitamin D3 levels or by directly inhibiting mineral apposition of bone. PMID- 3839969 TI - Premature preference. PMID- 3839970 TI - Posthospitalization growth and bone mineral status of normal preterm infants. Feeding with mother's milk or standard formula. AB - The growth and bone mineralization were studied in ten preterm infants fed human milk and 14 preterm infants fed cow's milk-based formula. After discharge from the hospital, at 42, 48, and 56 weeks' postmenstrual age, anthropometric measures of weight, length, occipital frontal circumference, mid-upper arm circumference, triceps, and subscapular skin folds were obtained. Blood was drawn for determinations of serum calcium, phosphorus, 25-hydroxyvitamin D, alkaline phosphatase, and albumin levels. Bone mineral analyses were performed by photon absorptiometry. Mean (+/- SD) gestational ages in nursing and formula-fed infants were similar (32.0 +/- 2.5 vs 31.5 +/- 1.5 weeks), as were their mean (+/- SD) birth weights (1.76 +/- 0.42 vs 1.52 +/- 0.30 kg). After hospitalization, both groups had similar rates of growth in weight, length, head circumference, mid upper arm circumference, triceps, and subscapular skinfold thickness. The formula fed group had higher serum phosphorus levels at 42 weeks, higher serum calcium levels at 48 weeks, and higher serum albumin concentrations at 56 weeks than the breast-fed group. By 56 weeks' postmenstrual age, the bone mineral content was higher in the formula-fed group. Our data suggest that after hospitalization, preterm infants fed their own mother's milk have similar growth patterns but a different bone mineralization rate compared with preterm infants fed a standard cow's milk-based formula. PMID- 3839971 TI - Third International Sucralfate Symposium. Peptic ulcer disease and gastritis: a worldwide review. September 17, 1984, Lisbon, Portugal. PMID- 3839972 TI - Comparison of two sucralfate dosages (2 g twice a day versus 1 g four times a day) in duodenal ulcer healing. AB - The effects of two dosage regimens of sucralfate, 2 g twice a day (one-half hour before breakfast and at night) and 1 g four times a day (one-half hour before meals and at night), on ulcer healing in 80 patients with endoscopically proved duodenal ulcer were compared. The study was single-blind and endoscopically controlled. Endoscopy was performed after four weeks and, if complete healing was not achieved, after an additional four weeks. Clinical assessment was carried out every two weeks. Seventy-four patients completed the study. After four weeks, the ulcer had healed in 28 of 36 patients (78 percent) who received 2 g of sucralfate twice a day and in 28 of 38 patients (74 percent) who received 1 g of sucralfate four times a day. The cumulative healing rates after eight weeks were 83 percent and 84 percent, respectively. The results suggest that sucralfate given in a dosage of 2 g twice a day is as effective as 1 g four times a day in the short term treatment of duodenal ulcer. PMID- 3839974 TI - Elephantiasis-like appearance of upper and lower extremities in Graves' dermopathy. AB - Graves' dermopathy, affecting upper as well as lower extremities, is reported in a 50-year-old male patient addicted to multiple narcotic drugs. The narcotic drug administration routes include subcutaneous and intravenous injection in all limbs over a period of 29 years. The combination of drug injection trauma and Graves' dermopathy produced elephantiasis-like appearance of upper and lower limbs with impairment of their function; the left hand required amputation. Other features of Graves' disease, ie, hyperthyroidism and ophthalmopathy were severe and required multiple modes of therapy. Although the pathogenesis of Graves' dermopathy is unclear, it is surmised that trauma to skin might exacerbate it and preventive measures for trauma might be helpful in the management of dermopathy. PMID- 3839973 TI - Sucralfate therapy in patients with symptoms of alkaline reflux gastritis. A randomized, double-blind study. AB - The effects of sucralfate (6 g per day) and placebo on symptoms, endoscopic findings, and gastric mucosal histology were compared in 23 patients with symptoms of alkaline reflux gastritis who had undergone Billroth I, Billroth II, or vagotomy and pyloroplasty. Patients were randomly assigned to receive sucralfate (n = 11) or placebo (n = 12) for six weeks. Then all received six weeks of open sucralfate therapy before treatment codes were revealed. Twelve gastric biopsy specimens were obtained before patients began treatment and at six and 12 weeks. The two groups did not differ significantly with respect to symptom scores or endoscopic findings at baseline, after the double-blind phase, or after open sucralfate treatment. There were also no significant differences between the treatment groups with respect to epithelial cell scores and conventional gastritis scores. However, after the six-week, double-blind phase, the inflammatory cell score of the sucralfate-treated group was significantly lower (p less than 0.05) than that of the placebo-treated group (1.3 +/- 0.3 versus 1.9 +/- 0.4). After six weeks of open sucralfate treatment, patients who had initially received placebo had a significant reduction (1.4 +/- 0.3 versus 1.9 +/ 0.4) in their inflammatory cell score. Sucralfate lowered the inflammatory cell scores of patients with symptoms of alkaline reflux gastritis. This reduction, however, was not associated with an improvement in symptoms. PMID- 3839975 TI - A modified technique for serial use of argon and neodymium-YAG lasers in laser iridotomy. PMID- 3839976 TI - Gastric mucosal barrier: stabilization of hydrophobic lining to the stomach by mucus. AB - The hydrophobic nature [Am. J. Physiol. 244 (Gastrointest. Liver Physiol. 7): G561-G568, 1983] of the mucosal lining of canine oxyntic tissue has been characterized by rinsing with saline or a phospholipid solvent (hexane) and by measuring the maximum contact angles as droplets of a hydrophilic liquid (saline) and a hydrophobic liquid (olive oil) advance over that surface. The results are consistent with the luminal lining as an adsorbed monolayer of surfactant whose outer shell of packed fatty acid chains resemble polyethylene. Phospholipid (dipalmitoyl lecithin) monolayers deposited in vitro and polyethylene were both found to be readily wetted by stomach mucus, reducing advancing contact angles (theta) by 74 and 83%, respectively, while eliminating altogether the minimum contact angle for receding saline. Taking theta values for "dry" tissue as the most conservative, the reduction in surface energy imparted by mucus was estimated as 30.3 ergs X cm-2, which dispels the objection that, on thermodynamic grounds, surfactant must form a bilayer rather than a monolayer. Thus, as a powerful wetting agent, mucus would play an important role in stabilizing and replenishing the absorbed surfactant monolayer proposed as the physical basis for the gastric mucosal barrier. PMID- 3839977 TI - Peptide 6A, a fibrin(ogen) degradation product, increases coronary blood flow. AB - The coronary hemodynamic effects of intracoronary administration of a fibrin(ogen)-derived pentapeptide, Ala-Arg-Pro-Ala-Lys (peptide 6A), were evaluated in open-chest anesthetized dogs. With administration of peptide 6A (2.5 30 mumol), coronary blood flow increased and coronary vascular resistance decreased promptly in a dose-related manner. Increase in coronary blood flow was independent of any change in indexes of myocardial O2 demand, indicating the peptide 6A exerts direct effects on coronary arterial tone. Systemic arterial and left ventricular end-diastolic pressures remained unchanged with smaller doses but decreased when higher doses of peptide 6A (greater than or equal to 20 mumol) were administered. Plasma concentrations of 6-ketoprostaglandin F1 alpha, stable hydrolysis product of prostacyclin, increased in coronary sinus blood samples in conjunction with increase in coronary blood flow. Administration of indomethacin (5 mg/kg iv) inhibited peptide 6A-induced release of prostacyclin and significantly attenuated the effects of peptide 6A on coronary hemodynamics. Pretreatment of animals with H2-receptor blocker cimetidine (500 mg iv) or with H1-and H2-receptor blocker diphenhydramine (50 mg iv) had no significant effects on peptide 6A-induced increase in coronary blood flow. This study suggests that this fibrin(ogen)-derived peptide has potent vasodilator effects on the coronary vascular bed of the dog, and these effects are in part mediated by stimulation of prostacyclin release. PMID- 3839978 TI - Dynamic interactions between heart rate and atrioventricular conduction. AB - We examined the beat-by-beat alterations in atrioventricular (AV) conduction time that accompany both linear and abrupt changes in heart rate (HR). We used alpha chloralose-anesthetized and autonomically decentralized dogs (n = 10) and recorded electrocardiogram (ECG), arterial pressure, and electrograms from sinus node, right ventricle, and His bundle. Abrupt or linear HR changes of known slope were generated by computer and displayed graphically with AV interval as a function of time. HR was increased linearly from 10 to 110 beats/min above control over 15, 30, and 60 s and then decreased in a linear fashion. AV interval was dependent on direction of HR change with marked asymmetry between increases and decreases in HR. Similar data were apparent irrespective of whether the decrease followed the increase or vice versa. To study determinants of 1:1 conduction, HR was increased linearly by 200 beats/min above control over 15, 30, and 60 s. As rate of change of HR increased, 1:1 conduction continued to a higher HR; however, the last conducted AV interval was negatively correlated with rate of change of HR. Abrupt sustained increases in HR of 25, 50, 75, and 100% above control resulted in marked accommodation of AV interval only at higher levels of HR. Thus in the absence of autonomic neural tone, 1) cardiac cycle length is not associated with a fixed AV interval but is dependent on magnitude and direction of HR change; and 2) the HR at which 1:1 AV conduction fails is significantly altered by the rate of change of HR. PMID- 3839979 TI - Effects of timing of atrial systole on LV filling and mitral valve closure: computer and dog studies. AB - Atrioventricular (AV) delay that results in maximum ventricular filling and physiological mechanisms that govern dependence of filling on timing of atrial systole were studied by combining computer experiments with experiments in the anesthetized dog instrumented to measure phasic mitral flow. Ventricular filling volume is maximized at AV delay of 100 ms in the computer study and 80 ms in the dog study. At any time in diastole atrial contraction accelerates mitral flow, opening the mitral valve widely; atrial relaxation then decelerates mitral flow, moving the valve leaflets toward closure. The time the valve remains closed following atrial systole varies inversely with AV delay. When AV delay is optimal, the mitral valve is moving rapidly toward closure but is not yet closed at onset of ventricular systole. The decline in filling volume as AV delay decreases below its optimum value is primarily the result of premature termination of atrial ejection by ventricular systole. As AV delay increases above its optimal value, filling volume progressively decreases because of premature mitral valve closure that limits effective diastolic filling period. There is no significant retrograde mitral flow at any point in diastole for any AV delay. PMID- 3839980 TI - Atracurium in clinical anaesthesia: effect of dosage on onset, duration and conditions for tracheal intubation. AB - Conditions for tracheal intubation at 90 seconds, time to onset of maximum block and duration of clinical relaxation after five different doses of atracurium, which ranged from 0.4 to 1.0 mg/kg were studied in 200 adult patients who were anaesthetized with nitrous oxide, oxygen and halothane or fentanyl. The conditions for intubation improved significantly with increasing doses, and were acceptable in 55% patients with a 0.4 mg/kg dose and in about 90% of those who received the two higher doses. The time to onset of complete block was 257 seconds with 0.4 mg/kg and decreased progressively to 124 seconds with 1.0 mg/kg. The duration of clinical relaxation under fentanyl anaesthesia averaged 29 minutes with 0.4 mg/kg and increased in a dose-related manner to 57 minutes with 1.0 mg/kg: halothane anaesthesia produced only a marginal increase. There was no evidence of cumulation with up to six repeat doses of 0.125 mg/kg. The only side effect noticed was cutaneous flushing observed in 42% of patients. This was again dose dependent, being 18% with 0.4 mg/kg and increasing to 73% after 1.0 mg/kg. There was associated hypotension and bronchospasm in one patient. PMID- 3839981 TI - Fast atom bombardment mass spectrometric studies of the aluminum chloride/n butylpyridinium chloride molten salt. PMID- 3839982 TI - Spectrophotometric determination of trace amounts of iron(III) in oxalates by extraction of the mixed-ligand iron-oxalate-purpurin complex. PMID- 3839983 TI - Cardiodilatin-immunoreactive neurons in the hypothalamus of Tupaia. AB - Using various region specific antibodies raised against partial sequences of synthetic cardiodilatin (CDD) we detected immunoreactive neurons with their perikarya in the nucleus periventricularis of Tupaia belangeri. The fibers could be traced laterally directed towards the amygdaloid complex and some varicosities were also observed in the lateral parts of the nucleus periventricularis. It is postulated that brain CDD represents a new neuropeptide and that these CDD-IR neurons are involved in specific functions related to the modulation of the cardiovascular centers. PMID- 3839984 TI - Atracurium pretreatment for succinylcholine-induced fasciculations and postoperative myalgia. PMID- 3839985 TI - Neurotoxicity of intrathecal local anesthetics in rabbits. AB - The authors developed a new method of intrathecal local anesthetic injection in rabbits in order to study the relationship between anesthetic concentration and impaired neurologic function. They found that none of the local anesthetics studied produced persistent neurologic damage in concentrations used clinically. However, lidocaine and tetracaine can be prepared in high concentrations (far exceeding those clinically used) that will produce extensive irreversible neurologic injury and histologic changes. This was also true for sodium bisulfite, an antioxidant used in a number of commercially prepared local anesthetic solutions. Pure solutions of relatively insoluble local anesthetics (bupivacaine and 2-chloroprocaine) failed to produce comparable neurologic or neuropathologic changes when tested at concentrations up to their solubility limits. Extensive neurologic impairment was not necessarily accompanied by equally extensive lesions in the spinal cord and nerve roots. PMID- 3839986 TI - Redistribution of lidocaine and bupivacaine after intrathecal injection in mice. AB - Redistribution of lidocaine and bupivacaine was studied after intrathecal injection in mice qualitatively by whole-body autoradiography or quantitatively by determining spinal cord concentration of the drugs. The composition of the drug solutions then were changed to see if drug distribution could be altered. Changing the pH of the lidocaine solution from 7.5 to 5.0 by adding hydrochloric acid had no effect on spinal cord distribution. Simultaneous injection of bupivacaine and epinephrine increased the bupivacaine concentration in the spinal cord. By adding sucrose to a lidocaine solution, rostral spread of lidocaine was considerably less when the animals were restrained in a vertical position as compared with those injected with a plain solution. When lidocaine and bupivacaine were injected simultaneously, the spinal cord concentration was only changed to a small extent as compared with when the drugs were given separately. Whole body autoradiography revealed that both lidocaine and bupivacaine were rapidly redistributed rostrally from the lumbar area, but quantitatively the rostral redistribution is small. Whole body autoradiography also illustrated the elimination pathways from the spinal subarachnoid space. The authors conclude that alterations in the composition of the injected drug solution can affect rostral redistribution in the spinal cord tissue. PMID- 3839987 TI - Hemoptysis and anemia in a 3-year-old boy. PMID- 3839988 TI - [Bacterial meningitis and intrathecal treatment of chronic pain]. PMID- 3839989 TI - Lactulose and severe lactic acidosis. PMID- 3839990 TI - Endogenous digoxin-like material in patients with liver disease. PMID- 3839991 TI - When do patients given intrathecal morphine need postoperative systemic opiates? AB - A prospective, randomised study has compared the requirements for intramuscular papaveretum after cholecystectomy in patients given either 0.8 mg intrathecal morphine preoperatively or intravenous papaveretum peroperatively. Patients given intrathecal morphine required significantly less papaveretum during the first 48 hours after operation, but no significant difference in analgesic requirements was observed by 72 hours due to a continuing demand for papaveretum by these patients. PMID- 3839993 TI - Recent advances in Scandinavian research on STD's. PMID- 3839992 TI - Current views on sexually transmitted diseases. PMID- 3839994 TI - Correlation between experimentally and clinically demonstrated activity of two new cytotoxic agents in breast cancer. AB - Experimental evidence of the cytotoxic activity of two new agents was obtained using five lines of human breast carcinoma serially transplanted into immunosuppressed mice. Tumor growth delay was used to compare the effect of the new agents with that of cytotoxic drugs of known value in human breast cancer. The mean specific growth delay (number of tumor volume doubling times saved) for each agent against the five lines was: CL232/315 (mitoxantrone) 1.9; M-AMSA (4'[9 - acridinyl] amino-methane sulphon - M - ansidine) 0.5; cyclophosphamide, 1.9; adriamycin, 1.8; melphalan 2.2. There was no significant difference between the activity of mitoxantrone and the clinically useful drugs, but m-AMSA (amsacrine) was significantly less active than the other agents. A clinical trial of mitoxantrone at the Royal Marsden Hospital has confirmed the prediction of useful activity against breast cancer. Objective responses (CR + PR, UICC response criteria) were noted in 21 out of 70 (30%) patients with advanced breast cancer treated with the drug. The responses were of 4-7 months plus duration, and the 30% response rate compares favorably with other single agents. Although amsacrine is active in many forms of malignant disease, several Phase II studies have shown it to have little effect in breast cancer. By using panels of xenografts of different tumor types, it should be possible to select the most appropriate human tumors against which to test a new cytotoxic agent in Phase II studies. PMID- 3839995 TI - Directed biosynthesis of new saframycin derivatives with resting cells of Streptomyces lavendulae. AB - Saframycin A is an antitumor antibiotic produced by Streptomyces lavendulae 314 which falls into the category of the N-heterocyclic quinone group. Biosynthetically the quinone ring is derived from two tyrosine molecules which condense to generate the basic ring system of saframycin A. The side chain also has been found to derive from two amino acids, i.e., glycine and alanine. Supplementation by various amino acid analogs of the side chain produced three new saframycin derivatives with a replaced side chain. These three saframycins, designated Yd-1, Yd-2, and Y3, contained 2-amino-n-butyric acid, glycine, and alanine residues, respectively. in place of the normal N-terminal pyruvic acid in the side chain of saframycin A. Feeding experiments with 13C-labeled dipeptide indicated that the amino acids are probably incorporated in the side chain as a dipeptide unit. It was also found that saframycin A is produced from saframycin Y3 by an enzymatic deamination reaction. Based on these results, saframycin biosynthesis in S. lavendulae is discussed. PMID- 3839996 TI - The co-oxidation of ammonia to nitrite during the aerobic xanthine oxidase reaction. AB - The xanthine oxidase reaction causes a co-oxidation of NH3 to NO2-, which was inhibitable by superoxide dismutase, catalase, hydroxyl radical scavengers, or by the chelating agents, desferrioxamine or diethylene triaminepentaacetic acid. Hydroxylamine was oxidized to NO2- much more rapidly than was NH3, and in this case superoxide dismutase or the chelating agents inhibited but catalase or the HO. scavengers did not. Hydrazine was not detectably oxidized to NO2-, and NO2- was not oxidized to NO3-, by the xanthine oxidase reaction. These results are accommodated by a reaction scheme involving (a) the metal-catalyzed production of HO. from O2- + H2O2; (b) the oxidation of H3N to H2N. by OH.; (c) the coupling of H2N. with O2- to yield peroxylamine, which hydrolyzes to hydroxylamine plus H2O2; (d) the metal-catalyzed oxidation of HO-NH2 to (Formula: see text), which couples with O2- to yield (Formula: see text), which finally dehydrates to yield NO2-. PMID- 3839998 TI - [Kaposi's sarcoma]. AB - Kaposi's sarcoma (KS) is a very rare disease in Japan. The description by Moritz kaposi in 1872 of a "multiple idiopathic pigment sarcoma of the skin" stressed the multifocal lesions of the disease and its vascular nature, and it was renamed multiple idiopathic hemorrhagic sarcoma." For many years, the traditional form of KS was seen by most dermatologists and pathologists. During the 1970s, following the initiation of immunosuppression therapy for kidney transplantation, on autoimmune disease, KS was observed to occur in up to 5% of patients undergoing this procedure. In 1981, reports began to appear of kaposi's sarcoma in young immunocompromised homosexual men. Many patients bad lymphadenopathy and/or unusual opportunistic infections. The clinical manifestations of traditional KS were and are well established. The initial lesions usually involve the lower extremities, beginning as macules and patches and extending to plaques and modules. The color is thought to be somewhat distinctive, especially in the later stages, with hues of red or red-brown with a bluish purple tone. Eventually, non pitting edema of the legs is seen, with widely scattered involvement of cutaneous lymph nodes and eventually, internal organs. The disease is considered to be multifocal both in the traditional and AIDS-associated (new KS) forms. The clinical course of the disease is variable. The differential diagnosis of KS has become a major problem in histopathology. Factor-VIII-related antigen may be demonstrated in vascular endothelium using immunoperoxidase staining methods and may be useful, as a practical approach to skin biopsy in high-risk patients, awareness of the differential diagnoses is of primary importance. An abnormal helper: suppressor ratio of T lymphocytes is found in most of the immunocompromised groups, KS patients are treated by radiation and/or chemotherapy. Some drugs are well-suited for the long-term treatment of KS. PMID- 3839997 TI - Analysis of the 3' region of the sheep elastin gene. AB - The nucleotide sequences of a 1279-bp sheep elastin cDNA clone, pcSEL1 [Yoon et al. (1984) Biochem. Biophys. Res. Commun. 118, 261-269], and a 1230-bp sheep elastin genomic subclone, pSS1 [Davidson et al. (1984) Biochem. J. 220, 643-652], corresponding to a portion of the cDNA clone, were determined. These analyses permitted determination of the 100 amino acids at the carboxy terminus of sheep tropoelastin. A portion of this sequence showed strong homology to known sequences of pig tropoelastin, but most of the sequence had not been previously determined through protein sequencing. Novel aspects of the tropoelastin molecule which have been revealed by the present analyses are (i) the presence of an unusual sequence, KPPKP, which may contribute to crosslink formation; and (ii) the finding of cysteine within a sequence, CLGKSCGRKRK, at the putative carboxy terminus of tropoelastin. Because of the presence of these sequences, it is speculated that the carboxy-terminal region may be of importance in crosslinking tropoelastin molecules to themselves or to other matrix macromolecules. The nucleotide analyses revealed that sheep elastin mRNA contains a 974-bp untranslated sequence at the 3' end, which appears to be strongly conserved among species. PMID- 3839999 TI - Retinopathy of prematurity: incidence and treatment. AB - The incidence of retinopathy of prematurity in infants with a birthweight less than or equal to 2500 g admitted to a tertiary neonatal intensive care unit between 1977 and 1983 was 20% of all survivors. There was a reciprocal relation between birthweight and the incidence of the disease, with an incidence of 68% in infants weighing less than or equal to 1000 g at birth. Cryotherapy of the avascular retina was performed if the acute disease progressed rapidly during stage 3 and the amount of fibrovascular proliferation was mild to moderate with signs of plus disease (presence of appreciable posterior pole vascular tortuosity and dilatation and the presence of engorgement of iris vessels). This method of treatment was performed in 4% of all survivors: in 26% of infants weighing less than or equal to 1000 g at birth and 5% of infants weighing 1001-1500 g. No infants had cicatricial disease greater than stage 2 on follow-up. The absence of any severe cicatricial disease or blindness in this large group of high risk infants suggests that when indicated and performed on the avascular retina cryotherapy may be an important method of treatment. PMID- 3840000 TI - Manpower needs and supply in academic pathology. AB - A survey of manpower supply and need in academic pathology departments was conducted by the Joint Task Force on Pathology Manpower of the College of American Pathologists, the American Society of Clinical Pathologists, and the Association of Pathology Chairmen by means of questionnaires distributed to chairmen and faculty of all departments of pathology and laboratory medicine in the United States. Of the 136 departments, responses were obtained from 131 (96%) chairmen and from 1,561 (45%) faculty members. The current total need for faculty members (funded vacant positions) is 272, and the projected aggregate need over the next five years is 693 members for new and replacement positions. The greatest needs are for research MD pathologists and surgical pathologists, followed by autopsy and chemical pathologists. Based on the estimate of current pathology trainees planning academic careers, there is a strong indication that the projected supply of MD pathologists is significantly less than the anticipated demand. PMID- 3840001 TI - Accuracy of participant results utilized as target values in the CAP Chemistry Survey Program. AB - Samples of lyophilized human serum were circulated to more than 7,000 participants in the College of American Pathologists chemistry survey program. The participants measured the concentrations of glucose, cholesterol, uric acid, and urea along with other constituents in the samples. Selected samples also were sent to the National Bureau of Standards (NBS) for analysis of these same analytes by definitive methods. Consensus mean values of participant results are used as target values. The participant values were compared with the NBS values, providing a measure of the accuracy of the designated target values. There was, in general, excellent correlation between the NBS definitive values and the designated target values. These target values can provide reliable reference points by which to evaluate participant performance. PMID- 3840002 TI - Descriptive epidemiology of the autopsy in Connecticut, 1979-1980. AB - Knowledge of the differences between deaths for which autopsies are performed and all deaths is pertinent to epidemiologic investigation in such areas as disease trends, chronic disease incidence, and occupationally related disease. A population-based study was undertaken to evaluate these differences for deaths in Connecticut in 1979 and 1980. Analyses for 1979 and 1980 were comparable. Of 28,440 deaths in 1980, 14% underwent autopsy. Differences by sex, race, marital status, age, underlying cause of death, and place of occurrence of death were demonstrated when decedents who underwent an autopsy were compared with all decedents. Non-white men who died at 20 to 29 years of age were the most likely group to undergo an autopsy. Proportions of autopsies, by major category of underlying cause, did not parallel the leading causes of death. Deaths due to trauma accounted for a larger proportion of all autopsies (25%) than of all deaths (6%). If a death certificate indicated a circulatory disorder or neoplasm as the cause of death, an autopsy was less likely to be performed. A disproportionately high number of autopsies were performed for deaths occurring in hospitals; the converse was true for deaths occurring in nursing-convalescent homes. We conclude that knowledge of the ways in which autopsies are biased will permit broader use of the sensitive and specific information that can be obtained from them. PMID- 3840003 TI - Pleura in pneumothorax. Comparison of patients with cystic fibrosis and idiopathic spontaneous pneumothorax. AB - We studied pleura from patients with cystic fibrosis (CF) in order to define abnormalities that predispose to pneumothorax or are unique to CF. We compared the histology of CF pleura with that of young non-CF adults with "idiopathic" pneumothorax. Both CF and non-CF patients with pneumothorax showed distorted elastic fibers in areas of pleural fibrosis, adhesions, or air "cysts." Following pneumothorax, chronic inflammation, granulation tissue, fibrosis, mesothelial hyperplasia, and reactive eosinophilic pleuritis were also common. Although CF pleura appeared more intensely inflamed, only myxoid connective tissue and vascular proliferation were significantly more frequent in CF. Columnar, vacuolated mesothelial cells (Dunnill lesion) were focally observed only in patients with CF. We conclude that extensive degenerative pleural changes may predispose to pneumothorax in CF and represent a nonspecific response to chronic inflammation. PMID- 3840004 TI - Fibromyxoma of the trachea. A review of benign tracheal tumors. AB - A 59-year-old woman presented with asthmatic symptoms. A fibromyxoma obstructing her trachea was surgically removed. Benign tracheal tumors are rare lesions usually misdiagnosed as asthma. Histologically, the majority are soft-tissue-type tumors of mesenchymal origin. They are more frequently located in the lower third of the trachea with the exception of benign mixed tumor and granular cell myoblastoma that arise more frequently in the upper third. Though endoscopic removal of some tumors has been successful, complete cure without recurrence is better accomplished by segmental tracheal resection with end-to-end anastomosis. PMID- 3840005 TI - Cardiac sarcomas presenting as metastatic disease. AB - We describe two patients with primary sarcoma of the heart in whom metastatic lesions were the first evidence of disease. One patient had a fibrosarcoma of the tricuspid valve with only pulmonary metastases. The second had a pleomorphic sarcoma of the mitral valve with renal and bony metastases. The possibility of a primary cardiac tumor should be considered in patients with occult metastatic sarcoma. PMID- 3840006 TI - Hodgkin's disease of the endometrium. AB - We report a case of Hodgkin's disease of the endometrium. The endometrial stroma is replaced by a polymorphic cellular infiltrate in which Reed-Sternberg cells are seen. The patient also has a history of stage IV-B Hodgkin's disease that was diagnosed and treated three years earlier. To our knowledge, Hodgkin's disease of the endometrium has not been described. PMID- 3840007 TI - Papillary mucinous cystadenoma of probable renal pelvic origin in a horseshoe kidney. AB - A 59-year-old woman underwent a partial nephrectomy to remove a 7-cm cystic mass involving the left portion of a horseshoe kidney. Microscopically, the cyst was lined by tall columnar mucosecretory cells resembling endocervical cells. The lesion is believed to represent the benign counterpart of mucinous adenocarcinoma of the renal pelvis. PMID- 3840008 TI - Cancer arising in the gastric stump. Occurrence following resection for benign peptic ulcer disease. AB - Two patients developed adenocarcinoma of the gastric stump 20 to 30 years following gastric resection for benign peptic ulcer disease. The bulk of the medical literature supports a small but definite increased incidence with a latency period of 20 years or more. The risk is greatest following operations that lead to greater reflux of bile and pancreatic juices into the gastric remnant. The diagnosis may be inapparent by upper gastrointestinal tract roentgenograms, and changes may not even be obvious at endoscopy. Five-year survival rates are low (2% to 4%). Because the prognosis is poor once the disease is diagnosed, the high-risk patient should be considered for intermittent endoscopic surveillance. PMID- 3840009 TI - Giant invasive cholesteatoma. Report of a case with cerebellar invasion. AB - We present a case of epidermoid cholesteatoma that killed the patient by relentless invasion, despite radical surgery. An autopsy disclosed a focus of dural and cerebellar invasion, which dramatized the aggressive nature of this disease. In fact, the epithelial cells of this disease are not thought to possess the ability to invade. Instead, inflammation is believed to both stimulate the squamous epithelial cells to proliferate and destroy adjacent tissues, thereby providing a pathway for epithelial cell migration. Epidermoid cholesteatoma, then, is a disease in which the processes of inflammation and hyperplasia combine to mimic a neoplasm. PMID- 3840010 TI - Intestinal Buerger's disease. AB - We describe a 50-year-old man who, at 26 years of age, underwent a hemicolectomy on the right side of the abdomen due to infarction of the right colon. At 35 years of age, a stenotic, ischemic segment of distal jejunum was resected. Later he had had intermittent claudication, migratory thrombophlebitis, and recurrent cerebral infarctions. The mesenteric and mural blood vessels of both resected specimens of bowel showed an occlusive process with organized and recent thrombi and marked transmural inflammation. The internal elastic lamina and media in the arteries were preserved and there was no evidence of atheroma or calcification. The histologic findings were consistent with thromboangiitis obliterans. We suggest that the same mechanism may be responsible for intestinal peripheral and cerebrovascular involvement. PMID- 3840011 TI - The results of arthroscopic partial meniscectomy. AB - Partial arthroscopic meniscectomy has been performed in the First Orthopedic Clinic of the University of Florence since 1981. We have reviewed the first 100 cases with an average follow-up of 18 months. The results were graded according to a numerical rating system and were satisfactory in 85% of the cases. The main advantage of this difficult technique is the fast recovery rate. Other advantages are the low morbidity and short hospital stay. When meniscectomy was performed in the ACL unstable knee, the results were inferior but still acceptable in terms of reduction of the mechanical symptoms. The influence of age, sex, medial or lateral meniscectomy, and type of tear was not statistically significant. Thigh atrophy or chondromalacia significantly decreased the knee score. We believe that the single most important technical factor is to make sure that a stable, well balanced and healthy rim is left in the knee. PMID- 3840012 TI - Ophthalmic medications that contain sulfites. PMID- 3840013 TI - Myopia and unexpected intraocular pressure elevations after neodymium-YAG capsulotomy. PMID- 3840014 TI - Positional effects on exophthalmometer readings in Graves' eye disease. AB - Forty-eight patients with Graves' eye disease, half of whom had extraocular muscle restriction, and 45 normal adult subjects underwent exophthalmometry while in the upright and the supine positions to determine whether the difference in measurement due to position would serve to differentiate the groups. A previous report claimed that the upright reading would be greater than the supine reading for normal subjects and patients with Graves' eye disease without clinical extraocular muscle involvement, whereas those with extraocular muscle restriction would show little change in their exophthalmometer readings. Our study showed an increase in exophthalmometer readings in going from the upright to the supine position for normal subjects and both groups of patients with Graves' eye disease. Furthermore, this test did not serve to differentiate these three groups. PMID- 3840015 TI - Irradiation of the posterior ocular segment with the neodymium-YAG laser in its free-running mode. AB - A neodymium-YAG laser, operating in its free-running mode with pulse durations of 10 to 20 ms, was used to treat 63 cases of choroidal and retinal diseases. These cases included diabetic background retinopathies, thrombosis of the central retinal vein or branch retinal vein, neovascular membranes under the pigment epithelium, and retinal breaks or degenerations of the peripheral retina. Because the number of diabetic retinopathies (24) and their average follow-up time (25.5 months) are insufficient for the evaluation of irradiation effects, no definite statement as to the merits of this energy modality in such cases can be made. The irradiation of infarcted retina was followed by extensive atrophy of the involved area. No secondary glaucoma was observed during a follow-up period of 16.4 months. The irradiation in four cases of neovascular subretinal membranes was followed by disappearance of the membranes. However, relapse later occurred in all four cases. The irradiation of eight retinal breaks resulted in solid scar tissue. Two choroidal melanomas were destroyed and did not recur during a follow up period of 22 months. PMID- 3840016 TI - Inheritance of the human salivary proline-rich proteins: a reinterpretation in terms of six loci forming two subfamilies. AB - DNA studies suggest that six loci control the synthesis of human salivary proline rich proteins (PRPs). Genes at two of these loci (proposed names, PRH1 and PRH2) contain regions that strongly hybridize to a probe made from a cDNA in which sites for the restriction enzyme HaeIII occur repeatedly; they code for the acidic PRPs. Genes at the remaining four loci (PRB1, PRB2, PRB3, and PRB4) contain regions that strongly hybridize to a probe with repeated BstN1 sites; they probably code for the basic and glycosylated PRPs. In contrast to these data suggesting six loci forming two gene subfamilies, studies of protein polymorphisms and families have led to the postulation of 13 loci with 11 common null alleles. The discrepancy in the number of loci is partly resolved by the hypothesis that the three acidic PRPs, Db, Pa, and PIF, are coded for by alleles at one of the HaeIII-type loci rather than by three discrete loci. PMID- 3840017 TI - Construction and identification of a cDNA clone for human type II procollagen mRNA. AB - Double-stranded cDNA was constructed for poly(A)-containing RNA isolated from foetal human articular cartilage known to contain small amounts of pro alpha 1 (II) collagen mRNA. A 585 base pair PstI-EcoRI cDNA fragment was isolated and cloned into plasmid pBR322. A resulting recombinant plasmid pHCAR1 was shown to hybridize specifically to a 5.4 kilobase mRNA in cartilage but not in calvarial RNA. Definite identification of clone pHCAR1 was based on sequence analysis; marked homology with the corresponding chick gene and complete agreement with the human gene sequences available were observed. PMID- 3840019 TI - Computer-based modeling of biological systems which are inherently complex: problems, strategies, and methods. PMID- 3840018 TI - Primary structure of the telopeptide and a portion of the helical domain of chicken type II procollagen as determined by DNA sequence analysis. AB - A comparison of the nucleotide sequences of three new cDNA clones for chicken type II procollagen with the sequences of the other three types of chicken fibrillar procollagens reveals that the most conserved regions correlate with the positions of hydroxyproline, hydroxylysine, cysteine and lysine residues. On the basis of replacement-site-divergence calculations it is concluded that alpha 1(II) and alpha 1(I) procollagens diverged later than alpha 1(I) and alpha 2(I) procollagens. PMID- 3840020 TI - Nucleotide sequence of a cDNA clone for human aldolase: a messenger RNA in the liver. AB - Nearly complete cDNA clones for human aldolase A mRNA were isolated from human liver cDNA library and the nucleotide sequence determined. Using the cDNA clone as a probe the length of human aldolase A mRNAs, isolated from the skeletal muscle, liver and placenta tissues, was measured by RNA blotting and estimated to be 1,600 nucleotides for skeletal muscle mRNA and 1,700 nucleotides for both the liver and placenta mRNAs, indicating that different species of mRNA coding for human aldolase A were expressed in the different tissues. PMID- 3840021 TI - Studies on the fluorescence labeling of human red blood cell membrane ghosts with 4'-(9-acridinylamino)methanesulfon-m-anisidide. AB - 4'-(9-Acridinylamino)methanesulfon-m-anisidide (mAMSA) interacts with red cell membranes, resulting in the formation of fluorescent protein adducts. The mAMSA membrane protein adducts exhibited an emission fluorescence maximum at 445 nm, with two shoulders at approximately 425 and 470 nm. The major labeled proteins were identified as spectrins 1 and 2 and bands 3, 4.1, 4.2 and 5. The fluorescence intensity increased with increasing mAMSA concentrations (0.03 to 1.5 mM), time (15-120 min), and temperature of the reaction. Results from sodium dodecyl sulfate gel electrophoresis show that mAMSA caused no detectable change in the molecular weight of membrane proteins. This indicates that mAMSA is a monofunctional, noncrosslinking agent. Other acridine analogs, 9-aminoacridine and acridine, did not fluorescently label membrane proteins, suggesting that the presence of the acridine nucleus is not sufficient for labeling. Addition of 2 mercaptoethanol to the mAMSA-membrane reaction mixtures reversed the fluorescence labeling. Furthermore, pretreatment of membrane proteins with N-ethylmaleimide or iodoacetamide prevented the formation of fluorescent mAMSA-membrane protein adducts. These data suggest that mAMSA interacts with sulfhydryl groups of the membrane proteins. When the membrane sulfhydryl groups were assayed by labeling with N-[ethyl-2-3H]ethylmaleimide, it was shown that the accessible membrane sulfhydryl groups were reduced after the mAMSA treatment. The above results suggest that mAMSA covalently binds to the sulfhydryl groups in the red cell membrane, with the production of fluorescent mAMSA-protein adducts. PMID- 3840022 TI - Initial mechanistic studies with merbarone (NSC 336628). PMID- 3840023 TI - [Synthesis of igercine--the C-terminal nonapeptide from human immunoglobulin E]. AB - Conventional methods of peptide chemistry have been used to synthesize the C terminal nonapeptide from human immunoglobulin E, which is a potential cytophilic binding site of the IgE molecule responsible for its primary recognition and binding to specific target cell receptors. PMID- 3840024 TI - [Histological changes after chemotherapy of soft tissue sarcomas in the adult]. AB - The variations of histologic patterns inside the primary tumor have been studied in 15 patients with locally advanced soft tissue sarcomas who were given induction (neo adjuvant) chemotherapy. Increase of tumor necrosis and decrease of tumor cellularity were the predominant aspects identified. The mitosis count tend to be lower, while the nuclear atypies and the number of giant malignant cells tend to increase. In 2 cases, a better tumor differentiation, attributable to the induction chemotherapy was noted. In 10/15 cases, it was concluded to a tumoricidal effect of the chemotherapy. According to tumor grade, 6 among 10 patients with grade III tumor presented a histological response (greater than 50 p. cent of tumor destruction) while none among 5 lesions of grade I or II exhibited a response of such a level. So, the histological study allows an evaluation of the response to chemotherapy which usefully completes the clinical appreciation, and that may be useful for the selection of postoperative adjuvant treatment, as it is in osteosarcomas. PMID- 3840025 TI - Abnormal OKT4/OKT8 ratio and deranged capping in ataxia-telangiectasia. AB - Two sisters with ataxia-telangiectasia (A-T) and their parents were investigated for some parameters related to immunological functions. We found a decrease of total mature T lymphocytes, a decrease of OKT4+ helper-inducer T subset, and normal values of OKT8+ suppressor-cytotoxic T subset; a normal decrease of E rosette formation after incubation in vitro with theophylline, with a lowered E rosette capacity in one patient. The responses to phytohemagglutinin (PHA)and concanavalin A (ConA) were lowered. In addition we observed a reduction of basal capping of B lymphocytes in one patient and in her parents: this phenomenon could be related to cytoskeletal disorders, possibly involved in the pathogenesis of the disease. PMID- 3840026 TI - No prognostic value of thyroid autoantibodies changes during and after methimazole therapy in patients with Graves' disease. PMID- 3840027 TI - Respiratory problems after atropine and neostigmine in dogs. PMID- 3840028 TI - Clinically significant sucralfate-warfarin interaction is not likely. PMID- 3840029 TI - The effects of sucralfate upon phenytoin absorption in man. AB - The possible influence of sucralfate on phenytoin absorption was investigated in a double-blind, placebo controlled study. Concomitant administration of 1 g sucralfate reduced the absorption of 300 mg phenytoin capsules by 20% as measured by the area under the curve from 0-48 h. This could be of significance in epileptic patients stabilised on phenytoin in whom sucralfate is used in ulcer treatment. PMID- 3840031 TI - Do pregnant women need zinc supplements? PMID- 3840030 TI - Primary gastric lymphoma--the experience of a general hospital. AB - We analysed 29 consecutive cases of primary gastric lymphoma (20 men and 9 women) treated in our unit between January 1977 and May 1983. Median age was 55 years. Abdominal pain and weight loss were the main presenting symptoms while there was no palpable disease in the majority of cases. Upper gastrointestinal radiology was abnormal, but not diagnostic, in all cases. Endoscopy with multiple biopsies was performed in 22 cases; carcinoma was diagnosed in 11, lymphoma in 8 while no diagnosis was made in 3 cases. Twenty six patients underwent laparotomy. Gastrectomy was performed in twenty while the tumour was unresectable in six. Histology was reported as diffuse in 28 cases (16 histiocytic, 8 lymphocytic and 4 mixed) and nodular (lymphocytic) in one. All our patients received multichemotherapy. Complete remission after 6 courses was documented in 18 patients (62%). Neither perforation nor gastrointestinal bleeding was a problem in our series. Eighty four per cent complete responders are predicted to be alive at 4 years. Advanced stage (II2B and IV) and tumour size greater than 10 cm adversely influenced survival. We suggest that in limited primary gastric lymphoma an attempt at 'curative' surgery combined with multichemotherapy currently gives very promising results. PMID- 3840032 TI - Zinc and copper in Asian pregnancies--is there evidence for a nutritional deficiency? AB - In 92 Hindu Asians, 59% of them vegetarian, and 51 Europeans longitudinal measurements were made during pregnancy of the zinc and copper concentrations in plasma and hair together with urinary zinc excretion, as indices of their zinc and copper status. Maternal diets were assessed once at booking. Zinc intakes ranged from 3.1 to 16.9 mg/day, with average intakes least in vegetarian Hindus and most in Europeans. Average copper intakes ranged between 1.48 and 1.80 mg/day and were similar in the three patient groups. Both ethnic groups showed the pregnancy-associated fall in the plasma concentration of zinc and rise in that of copper but throughout the study Hindus had statistically significant lower levels of zinc and higher levels of copper than Europeans. Urinary zinc excretion was not only significantly lower throughout the study in Hindus than in Europeans but the increase in excretion which occurred after 20 weeks gestation was smaller. There were no ethnic differences in the zinc content of hair. Urinary zinc excretion correlated with both plasma zinc levels and dietary zinc. Mean birthweight in the Hindus was 2912 g and 34% of infants were below the 10th centile, using the Aberdeen standards, compared with 6% of the European babies (mean birthweight 3349 g). No association was found between crude or adjusted birthweight and any of the measures of zinc or copper status in either ethnic group. The Hindus had an apparently lower average zinc status than the Europeans, but there was no evidence that this had acted as a nutritional constraint and was the cause of their slower rate of intrauterine growth. PMID- 3840033 TI - Limited proteolysis of smooth muscle myosin light chain kinase. AB - Myosin light chain kinase plays a central role in the regulation of smooth muscle contraction. The activity of this enzyme is controlled by protein-protein interaction (the Ca2+-dependent binding of calmodulin) and by phosphorylation catalyzed by cAMP-dependent protein kinase. The effects of these two regulatory mechanisms on the conformation of myosin light chain kinase and the locations of the phosphorylation sites, the calmodulin-binding site, and the active site have been probed by limited proteolysis. Phosphorylated and nonphosphorylated myosin light chain kinases were subjected to limited digestion by four proteases having different peptide bond specificities (trypsin, chymotrypsin, Staphylococcus aureus V8 protease, and thrombin), both in the presence and in the absence of bound calmodulin. The digests were compared in terms of gel electrophoretic pattern, distribution of phosphorylation sites, and Ca2+ dependence of kinase activity. A 24 500-dalton chymotryptic peptide containing both sites of phosphorylation was purified and tentatively identified as the amino-terminal peptide. The following conclusions can be drawn: neither phosphorylation nor calmodulin binding induces dramatic changes in the conformation of the kinase; the kinase contains two regions that are particularly susceptible to proteolytic cleavage, one located approximately 25 000 daltons from the amino terminus and the other near the center of the molecule; the two phosphorylation sites are located within 24 500 (probably 17 500) daltons of the amino terminus; the active site is located close to the center of the molecule; the calmodulin-binding site is located in the amino-terminal half of the molecule, between the sites of phosphorylation and the active site, and this region is very susceptible to cleavage by trypsin. PMID- 3840034 TI - Apolipoprotein E gene mapping and expression: localization of the structural gene to human chromosome 19 and expression of ApoE mRNA in lipoprotein- and non lipoprotein-producing tissues. AB - Apolipoprotein E (apoE) binds to specific cell-surface receptors and appears to be an important determinant in lipoprotein metabolism in man. Cloned human apoE cDNA (pAE155) was used as a probe in chromosome mapping studies to detect the structural gene sequences in human--Chinese hamster cell hybrids. Southern blot analysis of HincII-digested DNAs from 13 hybrids localized the gene to human chromosome 19. This observation indicates that apoE is syntenic to at least two other genes related to lipid metabolism, those for the low-density lipoprotein (LDL) receptor (the LDLR) and apoC-II. The cloned apoE cDNA was further used to detect the presence of apoE mRNA in RNA extracts of various human and baboon tissues. Northern gel analysis using the 32P-labeled pAE155 as a probe demonstrated the presence of hybridizable apoE mRNAs in human liver and in baboon liver, intestine, spleen, kidney, adrenal gland, and brain but not in baboon skeletal muscle. The apoE mRNAs appear to be intact and migrate on an agarose gel under denaturing conditions at approximately 18 S. To assay for the biological activity of the apoE mRNAs in these tissues, they were translated in a reticulocyte lysate system in vitro. Immunoprecipitation with an apoE-specific antiserum followed by sodium dodecyl sulfate gel electrophoresis and fluorography demonstrated that immunoreactive apoE with the expected apparent size was a product of translation of mRNAs from baboon liver, intestine, kidney, spleen, and brain but not that from baboon skeletal muscle.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840035 TI - Oxidation of biological membranes and its inhibition. Free radical chain oxidation of erythrocyte ghost membranes by oxygen. AB - The oxidation of human and rat erythrocyte ghost membranes by molecular oxygen has been performed in an aqueous suspension at 37 degrees C. A constant rate of oxygen uptake was observed in the presence of radical initiator. alpha-Tocopherol in the membrane suppressed the oxidation and the induction period was clearly observed. alpha-Tocopherol decreased linearly during the induction period and when it was depleted the induction period was over and a rapid oxidation started. The rate of oxidation was proportional to the square root of the rate of initial radical generation. The kinetic chain length, the ratio of the rate of propagation to that of initiation, was long, ranging from 7 to 100. These results indicate that the erythrocyte ghost membranes are oxidized by a free radical chain mechanism by molecular oxygen. Among the fatty acids of membrane lipids, polyunsaturated fatty acids were oxidized exclusively. Proteins as well as polyunsaturated fatty acids were oxidized and the formation of the high- and low molecular-weight proteins and the decrease of protein bands were observed on gel electrophoresis. PMID- 3840036 TI - Further characterization of 3'-isothiocyanatobenzamido[3H]cholate binding to hepatocytes. Correlation with bile acid transport inhibition and protection by substrates and inhibitors. AB - Binding of 3'-isothiocyanatobenzamido[3H]cholate ([3H]IBCA) to hepatocytes correlates to its efficacy in inhibiting cholate uptake in isolated hepatocytes. The correlation is linear up to 20 microM [3H]IBCA. Labeling of polypeptides is proportional to the degree of inhibition particularly for a protein of molecular weight 50 000. Transported substrates, competitive and non-competitive inhibitors of cholate transport protect against IBCA inhibition. Additionally binding of [3H]IBCA to isolated plasma membranes is prevented by the same substrates and inhibitors of the cholate transport system. The prevention is achieved by taurocholate, iopodate, iodipamide, furosemide, BSP, cyclosporin A, and somatostatin analogs. Protection is correlated to the degree of transport inhibition and depends on the hydrophobicity of the compounds. Other inhibitors known to destroy the driving forces such as valinomycin do not protect membrane proteins against coupling with IBCA. Silybin, which preferentially alters membrane fluidity, has little effect on the labeling. The above results give further evidence that IBCA, when applied in concentrations below 20 microM, is a suitable label for the hepatocellular bile salt transporter. PMID- 3840037 TI - Purification and resolution of NADH diaphorase activity from NADPH diaphorase linked: O2 oxidoreductase activity of human neutrophils. AB - Intrinsic NADPH diaphorase activity is a component of the membrane-bound NAD(P)H:O2 oxidoreductase of human neutrophils. NADH-specific diaphorase activity is also present in membrane fractions rich in oxidoreductase activity. Studies were undertaken to determine whether the NADH diaphorase might also be intrinsic to the oxidoreductase. The latter diaphorase was freed from the membrane by detergent extraction and partially purified approximately 80-fold. Its apparent molecular weight following solubilization in deoxycholate and Tween-20 was 204 000 +/- 10 000. The specific activity of the partially purified diaphorase with ferricyanide as electron acceptor was 7.6 X 10(3) mU/mg protein, its pH optimum was 7.0, and its Km for NADH was 13 microM. It is completely devoid of NADPH diaphorase activity, lacks the capacity to reduce molecular oxygen, yet readily reduces ferricyanide, 2,6-dichlorophenolindophenol and ferricytochrome c. Whereas the NADH diaphorase was freed from the particulate fraction of cell lysates by extraction in 10 mM Tris-HCl buffer (pH 8.6) made up in 15% glycerol and 0.5% Tween-20, NADPH-dependent diaphorase and superoxide-generating activities also present in the membrane were not. These observations make it unlikely that the principal membrane-bound NADH diaphorase found in human neutrophils is a component of the NAD(P)H:O2 oxidoreductase, despite its common association in the same particulate fraction of cell lysates. PMID- 3840038 TI - Slow- and tight-binding inhibition of aspartate aminotransferase by L hydrazinosuccinate. AB - The inhibition of aspartate aminotransferase (L-aspartate: 2-oxoglutarate aminotransferase, EC 2.6.1.1) by L-hydrazinosuccinate has been studied. The velocity of the enzyme reaction decreased with time when the reaction was initiated by the addition of enzyme to a mixture of the assay components and L hydrazinosuccinate, while it increased slowly from a low level when a preincubated mixture of the enzyme and the inhibitor was added to the reaction mixture to initiate the reaction. Nearly 50% decrease in the initial reaction velocity was produced by a prolonged preincubation of the enzyme with the inhibitor, both at low concentrations of about 2 nM. These findings indicate that the inhibition is of the slow- and tight-binding type. The time-course of the reaction of the enzyme and the inhibitor, examined by the change in activity, was not in accord with single-step mechanisms, but rather appeared to follow biphasic kinetics. The inhibition could be fully reversed only in the presence of L cysteine sulfinate or large excess of L-aspartate to convert the regenerated enzyme to its pyridoxamine form. The time-course of the reversal followed pseudo first-order kinetics. Quantitative analysis of the experimental data has shown that the results are consistent with a mechanism of enzyme-inhibitor interaction which involves a reaction of two consecutive, reversible steps. The overall inhibition constant for L-hydrazinosuccinate was calculated to be approx. 0.2 nM. PMID- 3840039 TI - Hb Doha or alpha 2 beta 2[X-N-Met-1(NA1)Val----Glu]; a new beta-chain abnormal hemoglobin observed in a Qatari female. AB - Structural analysis of a fast-moving hemoglobin variant, present in three members of a Qatari family, identified a Val----Glu substitution at position 1 (NA1) of the beta-chain. The introduction of this glutamic acid residue prevents the removal of the initiator methionine, thus extending the N-terminus by one residue to Met-Glu-His-Leu-Thr-. The methionine residue is blocked by an as yet not completely identified molecule. The presence of the variant in a heterozygote does not have clinical consequences. PMID- 3840040 TI - Computer simulation for hormones related to primary thyropathy. AB - We propose a mathematical model of the human hypothalamus-anterior pituitary thyroid system regulating basal metabolism, and practice computer simulation concerning primary thyropathy such as Graves' disease, hypothyroidism, T4 toxicosis and T3-toxicosis by use of this model. In order to throw light on properties of the system, indicial responses of the hormones, T4, T3, rT3, and TSH, and the function of the thyroid gland are computed. Medical treatments for Graves' disease and for hypothyroidism are simulated with a view to enhancing clinical significance. Performance of the simulation leads to an interesting result that when the convertion rate of blood T4 to blood T3 increases, explicit T3-toxicosis occurs, although the function of the thyroid gland is normal. PMID- 3840041 TI - Molecular dynamics of myoglobin at 298 degrees K. Results from a 300-ps computer simulation. AB - We have carried out a very long (300 ps) molecular dynamics simulation of the protein myoglobin. This trajectory is approximately three times longer than the longest previous molecular dynamics simulation of a protein, and ten times longer than protein simulations of comparable size (1,423 atoms in our model). Here we report results from this long simulation concerning the average structure, the mean square fluctuations of atoms about the average structure, and the nuclear magnetic resonance order parameters for various groups in myoglobin. The results demonstrate that the average coordinates change very slowly during the simulation. The relative atomic mobilities are well described by the simulation. For both the mean square atomic fluctuations and the order parameters, however, there are significant quantitative differences when values calculated using shorter portions of the trajectory are compared with results obtained for the entire 300-ps simulation. The implications of this result for obtaining converged properties from protein molecular dynamics simulations for comparison with experiment are discussed. PMID- 3840042 TI - Gastrointestinal bioavailability: determination of in vivo release profiles of solid oral dosage forms by deconvolution. PMID- 3840043 TI - Retrospective diagnoses of previously missed syndromic disorders among 1,000 patients with cleft lip, cleft palate, or both. PMID- 3840044 TI - Acetylcholine acts on m2-muscarinic receptors to excite rat locus coeruleus neurones. AB - Intracellular recordings were made from neurones of the rat locus coeruleus in vitro. Acetylcholine increased the firing rate by depolarizing the membrane; both muscarinic and nicotinic antagonists partially reduced this effect. In hexamethonium, pirenzepine shifted the acetylcholine dose-response curve to the right with an equilibrium dissociation constant of 200 nM, indicating an interaction with a m2-type of muscarinic receptor. PMID- 3840045 TI - Irritability: definition, assessment and associated factors. AB - The heading of 'Irritable Mood' was introduced into the Index Medicus in 1985 and it is noted that this term is frequently used but seldom defined. It is therefore important that a consensus is reached concerning its definition in the context of psychopathology and a definition is offered. It seems important to distinguish irritable mood and its outward manifestations from violently assaultive behaviour although there may be a continuum of disturbance from mildly to severely disordered behaviour. Irritability has so far not attracted much attention from clinicians and yet it is a common mood associated with many psychiatric and non psychiatric conditions. Severe irritability may cause considerable distress both to the patient, his associates and sometimes also those attempting to treat or otherwise help him. It may overshadow other symptoms and the correct diagnosis and management may be missed. The validity and reliability of a convenient self assessment scale is re-examined in the light of further data. Data from previous studies in the context of mood disorders suggests that irritability is a mood state which is independent of the other major moods of depression and anxiety; the severity of irritability probably has an inverse correlation with age. The most important associated factors are listed in order to inform researchers of the possible methodological pitfalls. PMID- 3840046 TI - Spinal mechanisms of the analgesic action of electroconvulsive shock. AB - The present study investigated the spinal systems involved in the analgesic action of electroconvulsive shock (ECS). To identify such systems complete spinal transections and discrete lesions within the dorsal half of the spinal cord were performed. Complete spinal transection eliminated ECS analgesia totally, demonstrating that the observed analgesic effect is attributable to neural conduction. Lesions within the region of the dorsolateral funiculus (DLF) caused a pronounced, but incomplete, attenuation of ECS analgesia. Larger lesions of the dorsal aspects of the spinal cord including both the DLF and the dorsal column area did not result in further attenuation of analgesia. Thus, it appears that within the dorsal cord the area of the DLF contains the fibers mediating the antinociceptive action of ECS. Additional experiments were conducted to determine the neuromediators involved in ECS analgesia. Of a wide range of antagonists injected intraperitoneally (methysergide, phentolamine, haloperidol, diphenhydramine, naloxone, picrotoxin, theophylline and scopolamine), only methysergide produced a significant attenuation of ECS analgesia. In contrast, following intrathecal injections of antagonists a dose-related decrease of analgesia could be seen after the injections of methysergide, phentolamine and naloxone implicating spinal serotonin, noradrenaline and the enkephalins in the analgesic action of ECS. To assess further the interaction between the action of these neurotransmitter systems, we evaluated the effect of drug pair combinations on ECS analgesia. Intrathecal phentolamine + naloxone, methysergide + naloxone and methysergide + phentolamine were injected at doses that caused maximal attenuation of analgesia.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840047 TI - Peptide YY (PYY), a potent orexigenic agent. AB - Peptide YY (PYY) enhances feeding and drinking more potently than does neuropeptide Y after central administration. Chronic administration of PYY every 6 h for 48 h causes massive food ingestion. Tolerance to this effect of PYY does not appear to develop. This data suggests that PYY is one of the most potent orexigenic substances yet to be identified. PYY may play a role in the pathogenesis of bulimic syndromes. PMID- 3840048 TI - Lesion of the temporo-ammonic perforant path facilitates self-stimulation of the lateral entorhinal cortex in mice. AB - The effect of a lesion of the perforant path (PP) on self-stimulation (SS) of the lateral entorhinal cortex (LEC) was tested in mice between 8 and 21 days after surgery. The current intensities tested ranged between 0 and 80 microA (peak to peak 100 Hz sine-wave). The PP lesion led to a two-fold increase in SS rates at intensities above 30 microA without affecting the baseline SS rates (0 microA) and SS threshold (30 microA). The lesion also led to a significant increase in LEC after-discharge (AD) threshold and eliminated behavioral convulsions during SS testing. The suppression of AD by i.p. Na phenobarbital injection (10 mg/kg) led to a similar increase in SS rates in sham-lesioned mice; there was no difference in PP-lesioned animals. These results might be interpreted as evidence in favor of an independence of the neuronal processes mediating entorhinal and hippocampal reward-related behaviors. PMID- 3840049 TI - Transport of molecules from nose to brain: transneuronal anterograde and retrograde labeling in the rat olfactory system by wheat germ agglutinin horseradish peroxidase applied to the nasal epithelium. AB - Transneuronal anterograde labeling with the conjugate wheat germ agglutinin horseradish peroxidase (WGA-HRP) has been documented in the mammalian and immature avian visual system [6,14]. Transneuronal retrograde labeling was significant only in the chick [6]. The present study was performed to determine whether transneuronal labeling could be shown in the mammalian olfactory system, whether the phenomenon was robust in adults, and whether transneuronal retrograde transport could label several transmitter-specific centrifugal afferent projections to the olfactory bulb. In addition we wished to learn whether molecules that enter the nasal cavity can undergo transport to brain neurons. Gelfoam implants soaked with 1% WGA-HRP, surgically implanted into the nasal cavity, produced transneuronal labeling patterns that affirmed all of these questions. Transneuronal anterograde transport labeled the appropriate zones in the olfactory bulb and in all second order olfactory targets. In addition, there was transneuronal retrograde labeling of neurons in the olfactory bulb, anterior olfactory nucleus and in transmitter-specific projection neurons from the diagonal band (cholinergic), raphe (serotonergic) and locus coeruleus (noradrenergic). Transneuronal labeling was robust and consistent. The patterns of labeling indicated that transneuronal anterograde and retrograde transport occurred along known, specific circuits in the olfactory system. The present results suggest that nasal epithelial application of WGA-HRP may be a useful tool for assessing regeneration of primary olfactory neurons and the status of central circuitry following regeneration. The method should also facilitate the study of central olfactory connections after surgical or genetic lesions of the olfactory bulb. Finally, these experiments suggest the possibility that inhaled molecules including, possibly substances of abuse, may be transported to, and, possibly, influence the function of neurons in the brain, including some (diagonal band, raphe, locus coeruleus) which have extensive projections to wide areas of the CNS. PMID- 3840050 TI - [Complications of gonorrheal infection in material from the Dermatology Department of the District Institute of the National Health Hospital in Svidnik]. PMID- 3840051 TI - Activation of folypolyglutamate synthetase by pteroic acid. AB - The glutamylation of methotrexate catalyzed by beef liver folypolyglutamate synthetase (FPGS) is activated by addition of pteroic acid. Pteroic acid causes greater stimulation of FPGS, including glutamylation of tetrahydrofolate, at neutral pH values (i.e., below the pH optimum of 8.4). We have attributed this activation to a conformational change of FPGS induced by pteroic acid. PMID- 3840052 TI - Chromosomol DNA fragments from mouse cells exposed to an intercalating agent contain a 175-kdalton terminal polypeptide. AB - A 175 kdalton (kDa) polypeptide is bound covalently to the chromosomal DNA fragments from mouse cells exposed to the intercalating agent 4'-[(9-acridinyl) amino]methansulphon-m-anisidide. Electron microscopy shows a terminal protein on the DNA fragments, whose 5'-termini are blocked. Since the relative molecular mass of topoisomerase II polypeptide chains is also about 175 kDa and topoisomerase II inhibitors prevent intercalator-induced DNA fragmentation, we propose that the polypeptide bound covalently to the 5'-terminus of the DNA fragments is a polypeptide derived from frequently integrated topoisomerase II operating to normalize torsional stress resulting from intercalation. PMID- 3840053 TI - A survey of sheep diseases in Canada. AB - A mail survey of disease occurrence in Canadian sheep flocks was conducted. The survey, which covered the period from September 1982 to August 1983, utilized flocks on the Record of Performance (ROP) sheep program and relatively complete data were available from 116 flocks. Data about lambing rates, incidence of a variety of lamb and ewe diseases and reasons for culling were obtained. At the same time a retrospective evaluation of records of diagnoses of sheep diseases recorded at diagnostic laboratories across the country was performed. Data from the years 1978 to 1982 were obtained and summarized. A lambing percentage of 153% (1.53 lambs live born per ewe lambing) was observed and an additional 0.05 lambs were stillborn. The major identified causes of mortality amongst lambs were starvation, pneumonia, scours and accidents. Pasteurella spp. were the etiological agents most commonly associated with pneumonia in lambs and Escherichia coli had the same predominant position with regards to nonparasitic scours. A large discrepancy existed between the proportional mortality rates for internal parasites and coccidiosis as determined from the farm survey data compared to diagnostic laboratory data. This suggests that clinical parasitism may not be adequately recognized at the farm level. Abortions in ewes occurred in approximately half the flocks, but generally at a low level and no severe abortion storms occurred. Pneumonia was the most commonly identified cause of mortality in ewes and although Pasteurella spp. appear to be the most important etiological agents, regional differences were apparent.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840054 TI - Effect of 1,25(OH)2D3 on the relative contributions of skeletal 45Ca and intestinal 40Ca to blood calcium in normal and thyroparathyroidectomized dogs. AB - The effects of gradually increasing doses of 1,25(OH)2D3 on plasma calcium and 45Ca radioactivity were studied in young dogs that had been extensively prelabelled with 45Ca. The effects of orally and intravenously administered 1,25(OH)2D3 were evaluated in normal and thyroparathyroidectomized dogs fed a normal diet. In normal dogs when 1,25(OH)2D3 increased the plasma calcium within the normal range (2.9-3.1 mmol/L) there was no significant increase in plasma 45Ca. In thyroparathyroidectomized dogs, oral or intravenous 1,25(OH)2D3 increased the low blood calcium to a normal level (1.8-2.9 mmol/L) without significantly increasing plasma 45Ca. In normal and thyroparathyroidectomized dogs, any 1,25(OH)2D3-induced increase in plasma calcium above the normal range was associated with a significant increase in 45Ca, indicating mobilization of bone calcium. Intravenous administration of 1,25(OH)2D3 in the normal or thyroparathyroidectomized dogs had a much larger effect than oral doses in mobilizing bone 45Ca when inducing a similar level of hypercalcemia. The major physiological effect of 1,25(OH)2D3 in the low or normal range of plasma calcium is on intestinal absorption of calcium without a significant effect on mobilizing bone calcium. The pharmacological effect of 1,25(OH)2D3 in vivo is to mobilize bone calcium as well as dietary calcium into blood. PMID- 3840055 TI - Analgesia and autonomic function following intrathecal administration of morphine and norepinephrine to the rat. AB - The acute intrathecal (i.t.) administration of 10, 25, 50, and 100 microgram morphine and 7.5, 10, 15, and 30 microgram (-)norepinephrine (NE) to the rat produced dose-dependent, long-lasting analgesia as assessed by the tail-flick and hot-plate tests. For i.t. morphine, maximum analgesia was observed 30-60 min after drug administration. The duration of analgesia in the tail-flick test ranged from 30 to 150 min; the duration of analgesia in the hot-plate test ranged from 60 to 120 min. For i.t. NE, maximum analgesia was observed 15-60 min after drug infusion. The duration of NE-induced analgesia in the hot-plate test ranged from 45 to 120 min and was 120 min in the tail-flick test. The effects of acute i.t. and intravenous (i.v.) infusions of morphine (10 microgram) and NE (15 microgram) on heart rate, blood pressure, arterial pH, partial pressure of oxygen (Po2), partial pressure of carbon dioxide (Pco2), and standard bicarbonate were determined over 45 min in rats anesthetized with alpha-chloralose (70 mg/kg). Morphine significantly decreased Po2 throughout the experiment but did not affect blood pressure, heart rate, pH, Pco2 and standard bicarbonate. A significant increase in blood pressure (137% of control) was observed 2.5 min after i.t. administration of NE. Intravenous NE produced a marked increase in blood pressure (246% of control) followed by a compensatory decrease in heart rate. There were no significant changes in blood gases with i.t. and i.v. NE. The data suggest that i.t. morphine and NE can produce effective analgesia with minimal effects on cardiovascular and respiratory function. PMID- 3840056 TI - [Is there a relation between prolactin and vitamin D?]. PMID- 3840057 TI - [Hypoxic changes in the germinative subventricular layer of the brain in neonates]. AB - The subventricular layer changes were studied in 125 brains of neonates weighing 800-3 500 g. A hypoxic encephalopathy without haemorrhage was found in 35% (basic group), negative finding was in 40% (control group); cases with ventricular and periventricular haematomas (24%) were omitted. In the basic group, 47% of cases showed subventricular layer changes. The changes occurring always combined with a hypoxic lesion of the white matter are to be taken for hypoxic ones as well. The changes were evaluated and classified into 4 descriptive findings. Cytoplasmic swelling of astroglia, rarefaction and focal as well as big irregular necroses of the subventricular layer. Acute hypoxic subventricular layer changes were discussed in connection with residual states. PMID- 3840058 TI - Palladium-catalyzed cross-coupling of 2-iodoadenosine with terminal alkynes: synthesis and biological activities of 2-alkynyladenosines. PMID- 3840059 TI - Mutagenicity of nitrofluoranthenes, 3-aminofluoranthene and 1-nitropyrene in Chinese hamster V79 cells. AB - 1-Nitropyrene (1-NO2Py), 3-nitrofluoranthene (3-NO2Ft), 3-aminofluoranthene (3 NH2Ft) and 8-nitrofluoranthene (8-NO2Ft) were tested for mutagenicity in cultured Chinese hamster V79 cells. Mutations at the hypoxanthine-guanine phosphoribosyl transferase (HGPRT) gene locus were quantified. 1-NO2Py had marginal direct acting mutagenicity which was enhanced by a mixture of Aroclor 1254- and 1242 induced liver homogenates (S9) in the treatment medium. 1-NO2Py was more mutagenic with S9 activation than 3-NO2Ft, 3-NH2Ft or 8-NO2Ft. However, 8-NO2Ft, 3-NO2Ft and 3-NH2Ft were more mutagenic than 1-NO2Py when a post-microsomal liver supernatant (S100) was used for metabolic activation. The results of these investigations strongly support activation of some nitrated polycyclic aromatic hydrocarbons to proximate mutagens by a sequence of reductions and possible formation of polycyclic aromatic hydroxylamines. PMID- 3840060 TI - Comparison of arsenic-induced cell transformation, cytotoxicity, mutation and cytogenetic effects in Syrian hamster embryo cells in culture. AB - Sodium arsenite and sodium arsenate were observed to induce morphological transformation of Syrian hamster embryo cells in a dose-dependent manner. A linear dose-dependence with a slope of approximately 1 was observed with both compounds when the data were plotted on a log-log graph. The trivalent sodium arsenite was greater than 10-fold more potent than the pentavalent sodium arsenate. The compounds also exhibited toxicity; however, transformation was observed at non-toxic as well as toxic doses. At low doses, enhanced colony forming efficiency of the cells was observed. To understand the mechanism of arsenic-induced transformation, the genetic effects of the two arsenicals were examined over the same doses that induced transformation. No arsenic-induced gene mutations were detected at two genetic loci. However, cell transformation and cytogenetic effects, including endoreduplication, chromosome aberrations, and sister chromatid exchanges were induced by the arsenicals with similar dose responses. These results support a possible role for chromosomal changes in arsenic-induced transformation. PMID- 3840061 TI - Identification and quantification of 2-amino-3,4,8-trimethylimidazo- [4,5 f]quinoxaline (4,8-DiMeIQx) in beef extract. AB - 2-Amino-3,4,8-trimethylimidazo[4,5-f]quinoxaline (4,8-DiMeIQx) was found in bacteriological-grade beef extract by liquid chromatographies with electrochemical detection and a photodiode array detector. 4,8-DiMeIQx was estimated to be present at a level of 10.0 ng per g of beef extract, and to account for 9% of the total mutagenicity of the extract. PMID- 3840062 TI - A case of partial deficiency of alpha 1-antichymotrypsin. AB - A 20-year-old woman, admitted to a neurological ward with a diagnosis of benign intracranial hypertension, was found on specific protein electroimmunoassay to have a consistently decreased concentration of alpha 1-antichymotrypsin in her plasma. Serum from her father showed the same result. Further investigation of her family demonstrated that this partial deficiency was transmitted in an autosomal dominant fashion and was not associated with any obvious specific clinical abnormalities. PMID- 3840063 TI - Vitamin K1 in the newborn. AB - By a sensitive high-performance liquid chromatography method it was possible to measure vitamin K1 concentrations in mothers and their newborn children, even at a level of 0.5 nmol/l. All neonates were born after an uncomplicated and full term pregnancy. The vitamin K1 concentration in neonates proved to be about half the value of their mothers, which is consistent with earlier studies of vitamin K1 dependent clotting factors. One may assume the existence of a partial placental barrier to vitamin K1. Venous, arterial and mixed cord blood did not differ significantly, so puncturing the vena umbilicalis is sufficient to measure vitamin K1 concentrations in cord blood. PMID- 3840064 TI - Improved method of thyroid peroxidase extraction from the human thyroid gland. AB - This study describes a new method of solubilizing thyroid peroxidase (TPO) and partial purification of TPO from a small surgical specimen of human thyroid tissue. Graves' thyroid tissue was homogenized and centrifuged to obtain the 100 000 X g pellet. To solubilize TPO from the 100 000 X g pellet protein, the following four detergents were used: Triton X-100, digitonin, sodium deoxycholate, and 3-[(3-choramidpropyl)-dimethylammonio] 1-propanesulfate (CHAPS). For some samples, two detergents were combined and trypsin was also used. The best solubilization of TPO activity was obtained from the combination of digitonin-CHAPS-trypsin treatment or deoxycholate-CHAPS-trypsin treatment. The solubilized crude TPO was then chromatographed on a Sephacryl S 300 column. The results of chromatography indicated that detergent treatment alone did not separate TPO from other membrane proteins and the addition of trypsin was required for separation of TPO. Sephacryl chromatography of detergent-trypsin solubilized TPO was suitable as an initial step for purification of TPO from a small human thyroid tissue. PMID- 3840065 TI - Effect of vasopressin blockade on blood pressure in conscious rats with malignant two-kidney Goldblatt hypertension. AB - The role of vasopressin (VP) in maintaining blood pressure in malignant two kidney one-clip Goldblatt hypertension in chronically catheterized conscious rats was investigated by studying the effect of two structurally different VP pressor antagonists. Injections of either 20 micrograms/kg of dPTyr(Me)AVP or 10 micrograms/kg of d(CH2)5Tyr(Me)AVP failed to alter mean arterial pressure or heart rate, although both antagonists completely inhibited the pressor response elicited by exogenous VP. These results suggest, that VP is not involved as a pressor hormone in the maintenance of high blood pressure in this type of experimental hypertension. PMID- 3840066 TI - The acute effects of acrivastine (BW825C), a new antihistamine, compared with triprolidine on measures of central nervous system performance and subjective effects. AB - The new H1-antagonist acrivastine (BW825C) in doses of 4, 8, and 16 mg was compared with triprolidine HCl (2.5 and 5 mg) in a double-blind crossover study in 12 subjects. Adaptive tracking performance 1.5 hours after dosing was impaired by triprolidine, 2.5 and 5 mg; the impairment was still detectable 3.5 hours after 5 mg. Acrivastine did not impair adaptive tracking after any of the doses. Triprolidine increased reaction times after 1.5 hours (2.5 and 5 mg) and 3 hours (5 mg), but acrivastine did not have any effect on reaction time at any dose. Both doses of triprolidine caused subjective central nervous system effects after 1.5 hours, and triprolidine, 5 mg, still had some detectable effects on subjective rating scales after 3 hours. No subjective effects were noted after acrivastine. We conclude that acrivastine at doses causing more peripheral H1 antagonism than triprolidine has considerably reduced central nervous system activity. PMID- 3840067 TI - ITA, a portable program for the interactive analysis of data from tracer experiments. AB - ITA is a portable program for analysing data from tracer experiments, most of the mathematical and graphical work being carried out by subroutines from the NAG and DASL libraries. The program can be used in batch or interactive mode, commands being typed in an English-like language, in free format. Data can be entered from a terminal keyboard or read from a file, and can be validated by printing or plotting them. Erroneous values can be corrected by appropriate editing. Analysis can involve elementary statistics, multiple-isotope crossover corrections, convolution or deconvolution, polyexponential curve-fitting, spline interpolation and/or compartmental analysis. On those installations with the appropriate hardware, high-resolution graphs can be drawn. PMID- 3840068 TI - Computerized calculation of in vitro generation of ATP and creatine phosphate induced by respiration in human muscle mitochondria. AB - A computer program is presented which calculates the action of adenylate kinase and creatine kinase during the process of adenosine-5'-triphosphate generation by the mitochondria in human skeletal muscle 600 X g supernatants. The results show that the mass action ratios of the two kinase reactions are not influenced by incubation time or decreased rate of oxidative phosphorylation as a result of mitochondrial dysfunction. The program is useful for establishing optimum initial adenosine-5'-diphosphate and creatine concentrations in the assay medium. PMID- 3840069 TI - A simple algorithm for defining the mean cardiac cycle of aortic flow and pressure during steady state. AB - A fast procedure for defining a cardiac cycle using simultaneously recorded and digitized aortic flow and pressure is presented. A simple algorithm, based on a double-threshold method, initially involves singling the dicrotic notch of flow in order to separate contiguous cardiac cycles during a given steady state. The individual cycles are carried back to a common origin of time, then they are normalized to the mean length and averaged. As a result of an averaging operation the algorithm gives a "mean cycle" of both pulsatile aortic pressure and flow. An "a posteriori" analysis of the noise components in the data has been carried out in order to justify the averaging operation. The "mean cycle" of aortic flow and pressure are suitable to be used as the input quantities of the automatic identification procedures recently assessed to estimate the parameters of simple models of the arterial input impedance. Our algorithm was defined and implemented as a FORTRAN program for a digital PDP 11/24 computer. This algorithm was tested by using pressure and flow data measured in the ascending aorta of dogs. About 26 sec were necessary to select 10 cardiac cycles (each one being about 200 samples long) of both flow and pressure in sequences of 2500 samples per signal and to compute the respective "mean cycles." Total peripheral resistance, total arterial compliance, and aortic characteristic impedance were estimated by aid of the simple three-element windkessel model. The results obtained by our method of determining parameters on the "mean cycle" of aortic pressure and flow were compared to the results obtained by averaging the parameters determined on each heart cycle. PMID- 3840070 TI - A robust microcomputer routine for the identification of outlying and influential points in radioimmunoassay standard curves. AB - This paper describes a suite of robust logit-log optimization routines for the fitting of a linear relation to laboratory data. The microcomputer routines assign a weighting value to each data point corresponding to the relative importance of that point. This procedure ensures that the routines identify and deal with any outlying data points. The routines are designed to generate the results of both a standard, unweighted least-squares algorithm and a robust, weighted algorithm thus providing the laboratory analyst with invaluable information concerning the data and the fitted relation. The routines are thoroughly tested on "perfect" and perturbed laboratory data. PMID- 3840071 TI - Microcomputer-assisted data management in a case-comparison study. AB - A system of programs which process data on a microcomputer for a case/comparison study is described. The procedures process the data from the abstracted case source records, to control selection, interview data management, and the selection of data subsets for analysis. The capabilities of various data processing modules are outlined, and cost estimates of an existing implementation are discussed. The microcomputer is presented as an alternative to mainframe data management. PMID- 3840072 TI - Redox status and pulmonary vascular reactivity. AB - Oxygen radicals are produced during oxidative metabolism in proportion to the tissue oxygen tension. The studies reported here have shown that oxygen radicals or the sulfhydryl oxidant, diamide, caused pulmonary vasodilatation in the isolated perfused rat lung. Could oxygen radicals play a role in the physiologic control of pulmonary vascular smooth muscle tone? PMID- 3840073 TI - Prostaglandins and estradiol-induced attenuation of hypoxic pulmonary vasoconstriction. AB - Pretreatment with estradiol (20 mg IM) attenuated vasoreactivity to decreases in inspired PIO2, lowered baseline resistance measured under conditions of maximal vasodilation (PIO2 = 0 mm Hg), and appeared to increase prostaglandin release in isolated, blood-perfused lungs of juvenile female sheep. Indomethacin (40 micrograms/ml) inhibited prostaglandin release and restored hypoxic vasoreactivity in estrogen-treated lungs, but did not alter the estrogen-induced decrease in baseline resistance. These results suggest that estradiol enhanced the production of prostaglandins which secondarily attenuated hypoxic vasoreactivity. The estradiol-induced decrease in baseline resistance, however, must have been mediated by some other mechanism. PMID- 3840074 TI - [Treatment of strabismus with focused prisms in 1984]. AB - The use of prisms in treatment of strabismus not only varies according to the author involved but often, a same author will change his opinion on the subject as time goes by. In the first case aetiopathological conceptions and the finality of treatment differ, in the second case improved theoretical knowledge and new possibilities in examination techniques and treatment etc., come into play. For this latter reason we wish to give complementary information and generally revise the publication on the use of prisms published in 1973 (18). The revised version in no way invalidates the previous work, it brings it up to date and gives further information on the severe forms of strabismus which, at the time of the first publication, constituted the failure group. These severe forms (both lesional and functional), the percentage of which has mostly increased during the last 15 years, are probably a consequence of 'suffering' during either the foetal or neo-natal stage. It could be that this 'suffering' gives rise to a minute isolated lesion within the sub-cortical motor centres (microlesions as described by neuropaediatricians). In situation, there are intermediary forms and come between the organic oculomotor disturbances of the cerebral palsied child and the strictly functional strabismus of the child who is otherwise normal. We have modified and adapted our diagnoses and techniques in view of the multiplicity of such forms and their resistance to conventional therapy. A better understanding of the process responsible, use of more sensitive methods of exploration, a longer period of functional readaptation and new techniques (particularly surgery ) all have a part to play in the new therapy. Where operating is concerned changes apply to the time selected, technique and number of operations performed: two or three stages are necessary. We give a general view of the extreme variety of clinical forms of strabismus and their causes and then give diagnoses and outlines for therapy based on four different type-cases. Clinical facts indicate that in severe forms it is possible to obtained a cure (bifoveality) on condition that the sub-cortical organic damage is very slight and that the optomotor dysfunction (which is its consequence) can be inhibited through satisfactory cortical functioning. However, such treatment requires rigourous participation of both the family and the child over a period of years. Unfortunately this treatment is possible only in a small percentage of cases. PMID- 3840075 TI - Surgery in Graves disease and the nodular thyroid gland. PMID- 3840076 TI - [Oncological characteristics of C57Bl/6JY mice]. AB - The oncological characteristic is presented for C57BL/6JY mice widely used in experiments. The mice over eighteen month had different spontaneous neoplasms among which hemoblastoses prevailed. The influence of sex, age and vaccination on the rate of spontaneous neoplasms in these mice is analyzed. PMID- 3840077 TI - [Change in the activity of tumor cell antigens as affected by treatment of the cells with the metabolic products of Bac. mesentericus AB-56]. AB - Tumour cells (ascitic A/Sn mouse lymphosarcoma ON-2), treated by the Bac. mesentericus AB-56 metabolism products used for the production of antitumour autovaccines were analyzed for their antigenic properties. The reactions of precipitation in gel, zonal and oncoming immunoelectrophoresis, passive hemagglutination as well as cytotoxic, absorption and transplantation tests were used. A considerable number of soluble and insoluble antigens inherent in intact tumour cells were inactivated by the products of microbial metabolism in the process of antitumour vaccine production, and modified antigens which induce synthesis of humoral antibodies in the syngenic system appeared. PMID- 3840078 TI - Lactational amenorrhea in monkeys: effects of suckling on prolactin secretion. AB - To determine the acute and chronic effects of suckling on maternal PRL secretion in monkeys, five mother-infant pairs were studied longitudinally on days 40, 80, 120, and 10 after weaning (day 160). Mothers were chronically cannulated and, during blood collections, wore protective nylon vests with mobile tethers. Studies were undertaken during the day and night with the mother and infant undisturbed, during the daytime, before and after the removal of the infant, and during the day and night before and after the reunion of mother and infant. Maternal PRL levels were significantly (P less than 0.05) higher at night than during the day in undisturbed mother-infant pairs. This nocturnal elevation was probably induced by a more intensive interaction of the mother and infant at night than during the day. Basal PRL concentrations in samples collected during these undisturbed settings significantly (P less than 0.05) declined as the postpartum interval continued. The removal of the infant did not perturb maternal PRL patterns. Typically, after reunion of mother and infant, maternal PRL levels were increased significantly (P less than 0.05), reaching maximal levels approximately 2 h after reunion. If PRL secretion, induced by the suckling stimulus, is instrumental in sustaining puerperal infertility, then the increased secretion of PRL that occurs at night during the protracted interval of intense mother-infant interaction may be of particular significance in inhibition of the hypothalamic-pituitary-ovarian axis. PMID- 3840079 TI - Relationship of estrogen receptors and protein synthesis to the mitogenic effect of estrogens. AB - 1,3,5(10)-Estratriene-3,16 alpha-diol (16 alpha-E2) is an estrogen which is ineffective in stimulating DNA synthesis in the prepuberal rat uterus when administered to rats in a single injection in doses up to at least 5 micrograms. However, it acquires the same high mitogenic potency as 1,3,5(10)-estratriene 3,17 beta-diol (17 beta-E2) if a 5-micrograms dose is administered over a 12-h period via sequential injections of 1 microgram each at 3-h intervals. In an attempt to explain this phenomenon we have found that the ability of an estrogen to maintain a stimulated rate of protein synthesis for 12 h correlates directly with its ability to stimulate DNA synthesis. A single injection of 16 alpha-E2 stimulates protein synthesis at 4 h to a degree comparable to 17 beta-E2. By 12 h when the effect of 17 beta-E2 is maximal, the effect of one injection of 16 alpha E2 has diminished to control levels. However, if 16 alpha-E2 is administered via sequential injections at 3-h intervals, protein synthesis at 12 h is stimulated to the same extent achieved by a single injection of 17 beta-E2. We also have examined the fate of estrogen receptors in relationship to these changes in protein and DNA synthesis. The effects of a single injection of 16 alpha-E2 differ in four respects from those of 17 beta-E2: 1) the retention of receptors in the nuclear form is shorter; 2) replenishment of receptors to the cytosolic form is more rapid and greater than 80% complete within 3 h; 3) fewer receptors are processed, i.e. the loss of receptors detectable by exchange assay is smaller; and 4) the overshoot in receptor replenishment 24 h after an injection is smaller. Overall, the stimulation of DNA synthesis is positively related to the rate of protein synthesis 12 h after an injection of estrogen, the retention of receptors in the nuclear form, and the amount of receptor processing. PMID- 3840080 TI - 1,25-Dihydroxyvitamin D3 suppresses parathyroid hormone secretion from bovine parathyroid cells in tissue culture. AB - To determine whether 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] regulates PTH secretion, we have tested its effects in both short term incubations (30-120 min) and long term primary cell cultures (24-96 h) of bovine parathyroid cells. In short term incubations, 10(-11)-10(-7) M 1,25-(OH)2D3 had no consistent effect on PTH secretion. In primary cultures of bovine parathyroid cells, significant suppression of PTH secretion occurred, as measured by both N-terminal and C terminal PTH assays. Suppression of PTH secretion was dose dependent when 10( 11), 10(-9), and 10(-7) M 1,25-(OH)2D3 were tested for 48 h in culture, and the effects of 10(-7) M, 1,25-(OH)2D3 were noted as early as 24 h. Reversal of suppression of PTH secretion was observed after an additional 48 h in the absence of 1,25-(OH)2D3. Other studies from our laboratory have demonstrated that 1,25 (OH)2D3 suppresses levels of pre-pro-PTH mRNA in cultured bovine parathyroid cells, and we found a strong correlation at 48 h between the decrease in PTH release and that in mRNA. We conclude that 1) 1,25-(OH)2D3 suppresses PTH secretion rates in a dose-dependent manner in cells grown for 24-48 h in culture, but does not have a significant effect on short term PTH release (30-120 min); 2) cultured cells exhibiting suppression by 1,25-(OH)2D3 demonstrate nearly full recovery of PTH secretion after an additional 48 h in the absence of added 1,25 (OH)2D3; and 3) PTH secretion closely parallels levels of pre-pro-PTH mRNA in cultured cells, suggesting that the observed effects of PTH secretion reflect, at least in part, suppression of synthesis of PTH by 1,25-(OH)2D3. PMID- 3840081 TI - Histidyl-proline-diketopiperazine (cyclo-his-pro) inhibits the suckling- and domperidone-induced transformation of prolactin in the lactating rat. AB - The histidyl-proline-diketopiperazine (cyclo-his-pro) metabolite of TRH inhibited the transformation of prereleasable PRL within the anterior pituitary and as a consequence, the normal rise in plasma PRL levels when injected before suckling. The dose (400 ng) was administered five times at 1-min intervals. PRL suppression was similar to that resulting from dopamine injected at the same rate. Combined injections of cyclo-his-pro and dopamine, each at the 400 ng/min for 5 min rate, provoked a greater inhibition of PRL than did either alone. Neither cyclo-his-pro nor dopamine inhibited the suckling-induced release of PRL in rats whose PRL had previously been transformed by a short (10-min) period of suckling. The stimulatory effects of iv administered domperidone (0.005 or 0.01 mg/rat) and haloperidol (0.2 mg/rat) upon PRL transformation and release in the lactating rat were substantially reduced by cyclo-his-pro in a dose-related fashion over a range of doses from 200-800 ng/min for 5 min. These results demonstrate that cyclo-his-pro inhibits PRL secretion in the lactating rat after suckling, primarily through inhibition of the transformation phase, and that the inhibitory mechanism may involve an interaction with dopamine. PMID- 3840082 TI - Primary malignant lymphoma of the thyroid in a patient with long-standing Graves' disease. AB - We have recently encountered a patient with rapidly enlarging thyroid masses histologically diagnosed as diffuse histiocytic lymphoma which developed in the active course of Graves' disease. The primary thyroid lymphoma has been in complete remission after local radiation therapy. The association of Hashimoto's thyroiditis and thyroid lymphoma has well been recognized. Meanwhile, data have accumulated to demonstrate that Hashimoto's thyroiditis and Graves' disease share possible similar causal immunological abnormalities and are closely related entities. However, the association of Graves' disease and primary thyroid lymphoma has never been reported, as far as we know. Therefore, this case may be the first one that supports the natural concept that thyroid lymphoma develops from pre-existing Graves' disease secondary to the similar immunological abnormalities in Hashimoto's thyroiditis. PMID- 3840083 TI - Circadian variations of free and sulfoconjugated catecholamines in normal subjects. AB - Normotensive recumbent subjects exhibit an early (11 p.m.) nocturnal increase in plasma dopamine, norepinephrine and epinephrine sulfates. In individual patients, this peak value is followed by a smaller nocturnal peak of catecholamine sulfates, while free catecholamine levels change in a direction opposite to catecholamine sulfates. This reciprocity of changes cannot however be demonstrated in the whole group. The origin of the nocturnal peaks of catecholamine sulfates is unknown. It may be due to a nocturnal decrease of the renal clearance of catecholamine sulfates, an increased generation of sulfates for reasons other than an increase in the free catecholamine substrate, or possibly a release of catecholamine sulfates from the brain. PMID- 3840084 TI - Effects of calcium and (inorganic) phosphate on bone resorption produced by vitamin D3 metabolites in vitro. AB - The effects of changing the concentrations of calcium (Ca2+) and inorganic phosphate (Pi) on 45Ca release from prelabeled fetal rat bones caused by parathyroid hormone (PTH), 25-hydroxyvitamin D3 (25-OH-D3) and 1, 25 dihydroxyvitamin D3 (1,25-(OH)2-D3) were tested, in vitro. Increasing total (Ca2+) from 1.25 mM to 2.5 mM caused a significant increase in bone resorption caused by submaximal concentrations of these materials. Further increase in total (Ca2+) to 3.5 mM abolished this potentiating effect of bone resorption. Increasing the (Pi) from 1 mM to 2-3 mM caused significant inhibition of bone resorption caused by these resorbing materials. In addition, a (Pi) of 3 mM caused significant inhibition of higher concentrations of PTH and 25-OH-D3. (Pi) of 2 and 3 mM also caused significant inhibition of 45Ca release from control bones. It is concluded that a moderate increase in medium (Ca2+) mimics the effect of these bone resorbing materials on bone. Phosphate appears to be a direct inhibitor of bone resorption. Therefore, changing the (Ca2+) and (Pi) in the medium can affect the bone resorbing effect of vitamin D3 metabolites, similar to their effect on PTH. PMID- 3840085 TI - Characteristics of primary isolates of alveolar type II cells from neonatal rats. AB - Alveolar type II cells from 6-day-old rat pups were obtained at approximately 90% purity, as judged by light and electron microscopy. Within 48-72 h in culture, the cells formed a monolayer with tight junctions typical of epithelial cells. Type II cells aggregated into raised domelike areas, which when sectioned showed alveolarlike structures comprised of type II cells. After 3 days in culture these structures showed abundant lamellar body secretion. Phospholipid profiles were characteristic of type II cells, with disaturated phosphatidylcholine (DSPC) the predominant secreted phospholipid. The cells also released DSPC in response to beta-adrenergic stimulation. This release was inhibited by the specific beta antagonist propranolol. The results show that morphologic differentiation and biochemical properties of neonatal type II cells can be studied using an isolated cell system in tissue culture. PMID- 3840087 TI - Gonadal genotoxicity assays as practical surrogates for germ-cell mutagenicity assays. PMID- 3840086 TI - Effect of seizures during pregnancy on seizure susceptibility in offspring. AB - The risk of epilepsy is higher in the offspring of epileptic mothers than epileptic fathers. It has been hypothesized that seizures during pregnancy may alter subsequent seizure susceptibility in the offspring. To test this hypothesis, pregnant rats were fully kindled during the first, second, or third trimesters. In addition, another group of pregnant rats were kindled during the first trimester and then stimulated daily to induce generalized tonic-clonic seizures until delivery. The rate of kindling in the offspring of the four groups was then compared with sham-operated controls. No significant difference in rate of kindling was noted between the offspring of sham-operated controls and kindled mothers. This study fails to support the hypothesis that maternal seizures during pregnancy lead to increased seizure susceptibility in the offspring. PMID- 3840088 TI - Underfoot accidents. PMID- 3840089 TI - Pharmacokinetics of sustained-release verapamil after a single administration and at steady state. AB - Pharmacokinetics of conventional 80 mg tablets and two types of sustained-release (SR) tablets containing 120 and 200 mg of verapamil were compared cross-over in 12 healthy volunteers. Serum concentrations of verapamil and norverapamil were analyzed both after a single oral dose and at steady state after t.i.d. administration of conventional tablets and b.i.d. administration of SR tablets. After 120 mg SR tablets serum concentrations of verapamil usually remained below 100 ng/ml for 5 days. This inadequate bioavailability was caused by very slow absorption. The relative bioavailability of verapamil in 200 mg SR tablets was 93 96% as compared to the conventional tablets. After 200 mg X 2 and 80 mg X 3, the peak serum levels were about 300 and 190 ng/ml, respectively and the trough levels 123-153 and 52-56 ng/ml, respectively. The verapamil/norverapamil ratio varied from 0.69 to 0.84 after a single dose and from 0.8 to 0.93 at steady state. By the 4th days of treatment, the accumulation ratios ranged between 1.75 2.07 and 1.30-1.75 for verapamil and norverapamil, respectively. For each preparation studied, the apparent Cltot of verapamil was significantly reduced at steady-state. These results show that 200 mg SR verapamil tablets fulfill the basic requirements of retard preparations allowing for twice or even once daily administration. PMID- 3840090 TI - Organ selectivity of hexahydrosiladifenidol in blocking pre- and postjunctional muscarinic receptors studied in guinea-pig ileum and rat heart. AB - Pre- and postjunctional pA2 values of the muscarinic antagonist hexahydrosiladifenidol were determined with guinea-pig ileum and rat heart. Hexahydrosiladifenidol did not discriminate between pre- and postjunctional receptors within the same organ but was more potent on the ileum (20-80 times) than on the heart. It is concluded that pre- and postjunctional muscarinic receptors in the heart may differ from those in the ileum. PMID- 3840091 TI - The effects of amidantel (BAY d 8815) and its deacylated derivative (BAY d 9216) on Caenorhabditis elegans. AB - The paralyzing effects of the anthelmintic drugs amidantel (BAY d 8815) and its deacylated derivative (BAY d 9216) on whole and cut C. elegans were investigated. The minimum effective concentrations with whole worms were 350 and 180 microM, respectively, compared to only 4 microM for another anthelmintic drug, levamisole. After rendering the worms permeable by cutting them at their approximate midsections, the minimum effective concentrations were: amidantel 0.30 microM, deacylated amidantel 0.07 microM and levamisole 0.15 microM. Comparison of the effects produced by amidantel and deacylated amidantel with those produced by levamisole, a known cholinergic agonist, suggested a common mode of action for all three drugs. The drugs were moderately potent inhibitors of both E. electricus and C. elegans acetylcholinesterase but at concentrations too high to account for their abilities to contract cut worms. Their primary mode of action appears to be as agonists at the level of the acetylcholine receptor, a view supported by the observation that their effects may be blocked by the nicotinic antagonists d-tubocurarine and gallamine. PMID- 3840092 TI - Muscarinic receptors in rat nasal mucosa are predominantly of the low affinity agonist type. AB - Specific [3H]l-quinuclidinyl benzilate binding to rat nasal mucosa homogenates occurs to a homogeneous class of binding sites with Kd = 60 +/- 2 10(-12) M and Bmax = 8.1 +/- 2 pmol/g tissue. Binding is stereoselectively inhibited by benzetimide enantiomers. Pirenzepine inhibits [3H]l-quinuclidinyl benzilate binding with low affinity (Ki = 5.0 10(-7) M), classifying the binding sites as muscarinic M2-receptors. Methylfurtrethonium and methacholine inhibit [3H]l quinuclidinyl benzilate binding following an almost sigmoid curve at high concentrations pointing to the presence of mainly low affinity agonist binding sites. PMID- 3840093 TI - A simple, low-cost computer program for Scatchard plot analysis of binding data in steroid hormone receptor assays. AB - This paper presents a relatively simple computer program for Scatchard plot analysis of binding data in steroid hormone receptor determination. The program is written in BASIC and adapted to a low-cost desktop calculator. The program is designed to permit data input without demanding extensive technical knowledge of either computer systems or mathematical background of receptor binding assays. PMID- 3840094 TI - Heme metabolism and erythropoiesis in abnormal iron states: role of delta aminolevulinic acid synthase and heme oxygenase. AB - Heme metabolism was examined in bone marrow and hepatic cells from iron-deficient and chronically iron-overloaded rats. Results indicate that the rate limiting enzymes delta-aminolevulinic acid synthase (ALAS) and heme oxygenase were significantly elevated in the iron-overloaded hepatic and bone marrow cells and near normal levels in cells from iron-deficient rats. Conversely, delta aminolevulinic acid dehydrase (ALAD) was depressed in iron-overloaded cells and elevated in iron-deficient cells. Erythroid colony (CFU-E) cultures demonstrated that iron-overloaded bone marrow cells were poor hemin and CFU-E responders in vitro, whereas iron-deficient marrows grew exuberant numbers of CFU-E and responded to hemin. Succinylacetone (1 mM) inhibited ALAD activity and normal CFU E growth, and CFU-E inhibition by succinylacetone was completely overcome by the addition of hemin. Results are discussed with respect to the regulation of hepatic and bone marrow heme metabolism in abnormal iron states and the possible role of iron in the induction of heme oxygenase in chronic iron overload. PMID- 3840095 TI - Effect of dexamethasone on fetal liver erythroid colony-forming cells in vivo. AB - Pretreatment of pregnant mice (CD-1) with intravenous dexamethasone phosphate (10(-3)-10(-7) g/mouse), a synthetic glucocorticoid, reduced the number of erythroid colonies that formed when 15-day-old fetal liver erythroid progenitor cells (3 X 10(4] were cultured for two days in plasma clots containing exogenous erythropoietin (Epo) (25 mU). The proliferative rate of fetal liver erythroid colony-forming cells (CFU-E), obtained from pregnant mice treated 24 h earlier with dexamethasone phosphate (1 mg/mouse), was reduced from 76% (control) to 46% as measured by a decrease in the percentage of fetal liver CFU-E lost following a 20-min exposure to high-specific-activity tritiated thymidine (50 microCi, 50-77 Ci/mmol). In addition, pretreatment of pregnant mice with lower doses of dexamethasone phosphate (10(-5)-10(-7) g/mouse) resulted in a higher percentage of fetal liver CFU-E lost following exposure to high-specific-activity tritiated thymidine (64% and 67%, respectively). Concomitantly, the inhibitory effect of dexamethasone on erythroid colony formation by these fetal liver cells in response to exogenous Epo is reduced. These results appear to indicate that the dexamethasone-mediated reduction in erythroid colony formation is inversely related to the fraction of fetal liver CFU-E lost after exposure to high-specific activity tritiated thymidine. Furthermore, this observation suggests that glucocorticoids inhibit erythroid colony formation by decreasing the proliferative rate of the fetal liver CFU-E. PMID- 3840096 TI - [Automated system of individual dosage programs (ASIDP) for calculating pharmacokinetic parameters and analyzing the relation between concentration and pharmacological effect]. AB - The authors have developed algorithms and programs that permit introduction in the dialogue mode of the data pertinent to the time-course of changes in the concentrations and pharmacological effects, calculation of up to 20 pharmacokinetic parameters, establishment of the relationship between the effect and concentration, and prediction of the expected effects under different drug dosage regimens. The ASPID is based on the FORTRAN-IV language. PMID- 3840097 TI - Potential antihypertensives. Synthesis of 6-substituted-N-(4H-1,2,4-triazol-4-yl) 3-pyridazinamines and 3-substituted-6-(3,5-dimethyl-1H-1,2,4-triazol-1 yl)pyridazines. AB - A series of 6-substituted-N-(4H-1,2,4-triazol-4-yl)-3-pyridazinamines [(II), Scheme 1] and 3-substituted-6-(3,5-dimethyl-1H-1,2,4-triazol-1-yl) pyridazines [(XII), Scheme 3-5] were synthesized. The compounds were evaluated for their oral antihypertensive activity in rats (SHR) and only some compounds of structure (XII) induced a moderate decrease in systolic blood pressure. PMID- 3840098 TI - Evidence that progesterone binding uteroglobin is similar to myosin alkali light chain. AB - Using a computer program designed to detect evolutionary relationships between proteins, I find that exon 2 of rabbit uteroglobin, a progesterone binder, and part of myosin alkali light chain have a comparison score that is 7.2 standard deviations higher than that obtained with a comparison of randomized sequences of these proteins. The probability (p) of getting this score by chance is less than 10(-12). This theoretical finding that these sequences are similar has led to the experimental finding that copper, calcium and the tranquilizer trifluoperazine, a calmodulin binding ligand, affect progesterone binding to uteroglobin. PMID- 3840099 TI - The influence of P-light chain phosphorylation by myosin light chain kinase on the calcium sensitivity of chemically skinned heart fibres. AB - Phosphorylation of the P-light chain of myosin might be involved in the regulation of cardiac contractility. Thus an enhanced phosphorylation level of the P-light chain catalyzed by Ca2+-calmodulin-dependent myosin light chain kinase (MLCK) increased significantly the Ca2+ sensitivity of chemically skinned ventricular fibre bundles of the pig. This effect was reversible. Whereas force development at submaximal Ca2+ concentration (pCa 5.5) increased by approximately 50% in the presence of MLCK, maximum tension achieved at maximum Ca2+ concentration (pCa 4.3) was not affected. PMID- 3840100 TI - On the primary structures of lysozyme, cecropins and attacins from Hyalophora cecropia. AB - Diapausing pupae of Cecropia respond to a bacterial infection by the selective synthesis of RNA and 15-20 hemolymph proteins. Of these we have purified lysozyme and two classes of antibacterial proteins called cecropins and attacins. The primary structure has been determined for the lysozyme, one attacin and five cecropins. We have also prepared a cDNA bank, isolated and sequenced clones corresponding to the lysozyme, the two main attacins and one cecropin. The results of these structural studies are briefly summarized. Finally we review the solid phase synthesis of cecropin A and B and 9 analogs of cecropin A. PMID- 3840101 TI - Kinetic and spectroscopic studies of transhydrogenase activity and nucleotide site of lipoamide dehydrogenase. AB - The kinetic behavior and spectroscopic characteristics of the nucleotide site(s) of lipoamide dehydrogenase have been investigated. Both subunits of the dimeric enzyme interact with NAD+. The binding of NAD+ is associated with a negative trough around 420-450 nm and a positive peak at 507 nm of the difference spectrum. The transhydrogenation between NADH and thionicotinamide nucleotide or acetylpyridine nucleotide is shown to proceed via a Ping Pong or an ordered Bi Bi mechanism, respectively, at pH above 7.0. Lowering pH or acetamidation lose the spectral characteristic of the positive peak of the enzyme-NAD+ complex with a concurrent change in the kinetic mechanism in the NADH+-acetylpyridine nucleotide transhydrogenation. PMID- 3840102 TI - The wave of activation current in the Xenopus egg. AB - A ring-shaped wave of inward current, the activation current, propagates across the Xenopus egg from the site of activation during the positive phase of the activation or fertilization potential. This activation current wave is due to an increased chloride conductance and reflects the propagated of the ionic channels responsible for the fertilization potential. These channels are present in the animal and vegetal hemispheres; however, the magnitude of the activation current is 6-7 times greater in the animal hemisphere. Outward current of a smaller magnitude and spread out over a larger area precedes and follows the inward current except at the point of activation where the current is first inward. The inward current wave is detected in all eggs activated by sperm and in eggs activated by pricking with a sharp needle, by application of the Ca2+ ionophore, A23187, and by intracellular iontophoresis of Ca2+ or inositol 1,4,5 trisphosphate. Reduction of the inward current by TMB-8, which blocks intracellular calcium release in some cells, suggests that the activation current channels are calcium sensitive and that the current wave is concomitant with a wave of increased intracellular calcium initiated by sperm-egg interaction. The wave of cortical granule exocytosis and two or more contraction waves follow the current wave. PMID- 3840103 TI - Coordinate expression of ribosomal protein genes during Xenopus development. AB - The expression of ribosomal protein and rRNA genes during Xenopus oogenesis results in the synthesis of sufficient ribosomes to support development of the swimming tadpole. cDNA clones for ribosomal proteins L13, L15, L23, and S22 have been isolated and used as probes to examine ribosomal protein gene transcripts during oogenesis and embryogenesis. Our results show that ribosomal protein mRNAs attain maximal steady-state levels in stage II oocytes concomitant with the onset of vitellogenesis. Approximately 50% of ribosomal protein mRNAs are associated with polysomes throughout oogenesis, resulting in a constant rate of ribosomal protein synthesis in stage III through stage VI oocytes. In contrast, the polysomal to nonpolysomal distribution of bulk poly(A)+ RNA increases during oogenesis, resulting in a five- to eightfold stimulation in the rate of overall protein synthesis. Following fertilization, maternal ribosomal protein mRNAs are degraded. Accumulation of de novo ribosomal protein transcripts is first detectable during gastrulation, but ribosomal protein mRNAs do not enter polysomes until stage 30 tailbud embryos. We find no discernible structural or functional differences between ribosomal protein transcripts in the polysomal and the nonpolysomal fractions for the observed stages of oocytes and embryos. These results are consistent with a model in which control of ribosomal protein synthesis is regulated at the translational level during Xenopus development. PMID- 3840104 TI - An appraisal of a cell culture test for revealing the presence of E. coli thermolabile enterotoxin (L.T.). AB - Three methods were comparatively used for revealing the presence of thermolabile enterotoxin (L.T.) of E. coli strains causing diarrheal illness of children. From 228 patients 52 L.T.+ strains (22.8%) were identified with the classic rabbit skin test out of which 50 L.T.+ strains (21.9%) also reacted positively in a cell culture test using CHO-KI cells and only 33 L.T.+ strains (14.4%) in the rabbit intestinal loop test. The cell culture test appears to have a constant sensitivity, it is inexpensive, easy to perform and therefore adequate to be carried out in experienced field laboratories. PMID- 3840105 TI - Effect of tamoxifen on H-Y antigen expression and gonadal development in chicken embryos. AB - Avian species follow the ZW/ZZ system of sex determination, which the female is heterogametic and expresses H-Y (or, more appropriately, 'H-W') antigen. We present the results of an investigation into the effects of the antiestrogen, tamoxifen, on gonadal differentiation and H-Y antigen expression in chickens. When given at doses of 0.25-2 mg per egg immediately before incubation, tamoxifen blocked regression of the right gonad in a significant number of 14-day-old female embryos. The nonregressed right gonad had a testis-like external appearance and, in some cases, contained what appeared to be spermatogenic tubules. Tamoxifen had no histologically detectable effect on the differentiation of the left ovary or the testes. In spite of tamoxifen's histological effects on right female gonads, it did not masculinize the steroidogenic capabilities of these gonads. Whether obtained from drug- or vehicle-treated embryos, the left and right female gonads always contained appreciable amounts of estrogen. In contrast, testes obtained from either drug- or vehicle-treated embryos did not contain detectable amounts of estrogen. Tamoxifen reduced the H-Y antigen levels in female liver and gonads. In both left and right female gonads, the reduction was to male levels. In female livers, tamoxifen reduced H-Y antigen to levels intermediate between those of normal males and females. Thus, the expression of H Y antigen in both gonadal and nongonadal tissue is estrogen dependent, but the dependency appears to be more stringent for gonadal tissue.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840106 TI - Size changes of protamine 1 mRNA provide a molecular marker to monitor spermatogenesis in wild-type and mutant mice. AB - We utilized a cDNA encoding the cysteine-rich, tyrosine-containing mouse protamine, mouse protamine 1 (MP1), to detect the presence of several classes of differentiating germ cells in testicular extracts from wild-type and male sterile mutant mice. This assay is based on the changes in the poly (A) length of MP1 mRNA during spermatogenesis. Testicular extracts of sexually mature CD-1 mice contain a heterogeneous population of protamine-1 mRNA ranging in length from 450 to 580 nucleotides. When the protamine-1 probe was hybridized to testicular RNA preparations from 16- to 20-day-old animals, no MP1-mRNA was detected. Twenty four-day-old mice contain only the 580-nucleotide form of MP1-mRNA. This size class of protamine mRNA is also present in purified populations of round spermatids, whereas elongating spermatids and residual bodies contain mRNAs ranging from 450 to 580 nucleotides in length, which are identical in size to those present in the testes of sexually mature animals. When the protamine cDNA probe was used to examine the progression of spermiogenesis in three male sterile mouse mutants, blind sterile (bs), quaking (qk) and testicular feminization (Tfm), the results demonstrated that each mutant is pathologically distinct. Analysis of the bs mutant revealed a diminution in the amount of both size classes of MP1-mRNA, in agreement with the cytological reports of reduced numbers of haploid spermatogenic cells in these animals. The presence of both size classes of protamine mRNA in the qk mutant indicates that germ-cell differentiation has proceeded at least to the step-12 spermatid in these animals.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840107 TI - FDA perspectives on the use of teratology data for human risk assessment. PMID- 3840108 TI - Characterization of liver enlargement induced by compound LY171883 in rats. AB - Compound LY171883 caused dose-related and reversible hepatomegaly in male Fischer 344 rats. Histological examination revealed hepatocellular hypertrophy with no other evidence of liver disease. There were only minor changes in serum glucose, total bilirubin, alkaline phosphatase, and alanine transaminase which were generally unrelated to dose and dissociable from the hepatomegaly. Total liver DNA increased but the DNA concentration decreased, indicating that liver growth involved a combination of hypertrophy and hyperplasia. Total liver protein and RNA increased. Hepatic mitochondrial protein content increased but cytochrome oxidase activity was not changed. There were minor changes in mitochondrial respiratory parameters; however, all the values were in the normal range and there was no indication of mitochondrial toxicity. Microsomal protein, drug metabolizing activity, and cytochrome P-450 increased, but glucose-6-phosphatase activity was not changed. The induction of drug-metabolizing enzymes and absence of toxicity were evidence that the hepatomegaly was an adaptation to an increased functional load in the liver. An increase in catalase activity suggested that the response may have also involved peroxisomes. In addition to rats, LY171883 administration caused hepatomegaly in mice and hamsters at daily exposures exceeding 100 mg/kg. The response was not observed in guinea pigs, beagle dogs, or rhesus monkeys given maximum tolerated doses, indicating LY171883-induced hepatomegaly is not a response common to all species. The doses required to elicit hepatomegaly greatly exceeded doses that produce pharmacological efficacy in animals and those that are expected to be used clinically. Since humans will not receive doses comparable to those given rodents, and considering that the primate species tested did not experience hepatomegaly, it is unlikely that the effect observed in rodents can be extrapolated to humans. PMID- 3840110 TI - Sucralfate suspension. PMID- 3840109 TI - Human distribution and release of a putative new gut hormone, peptide YY. AB - A radioimmunoassay has been developed for the new intestinal hormonal peptide tyrosine tyrosine [peptide YY (PYY)]. Peptide YY concentrations were measured in separated layers of the human gastrointestinal tract, where PYY was found exclusively in the mucosal epithelium which contained the endocrine cells. Peptide YY was found throughout the small intestine, in very low concentrations (5 pmol/g) in duodenum (6 pmol/g) and jejunum (5 pmol/g), but in higher concentrations in the terminal ileum (84 pmol/g). High concentrations were found throughout the colon (ascending 82 pmol/g, sigmoid 196 pmol/g), being maximum in the rectum (480 pmol/g). The major molecular form of PYY-like immunoreactivity in human intestine appeared to be identical to pure porcine hormone, both as judged by gel permeation chromatography and by reverse-phase high-pressure liquid chromatography. Basal plasma concentrations of PYY were low but rose in response to food, remaining elevated for several hours postprandially. The known potent biologic actions of PYY, its high concentrations in gut endocrine cells, and its release into the circulation after a normal meal suggest that this peptide may function physiologically as a circulating gut hormone. PMID- 3840111 TI - Molecular cloning and nucleotide sequences of cDNAs specific for rat liver ribosomal proteins S17 and L30. AB - cDNA clones coding for rat liver ribosomal proteins S17 and L30 have been isolated by positive hybridization-translation assay from a cDNA library prepared from 8-9S poly(A)+RNA from free polysomes of regenerating rat liver. The cDNA clone specific for S17 protein (pRS17-2) has a 466-bp insert with the poly(A) tail. The complete amino acid (aa) sequence of S17 protein was deduced from the nucleotide sequence of the cDNA. S17 protein consists of 134 aa residues with an Mr of 15 377. The N-terminal aa sequence of S17 protein determined by automatic Edman degradation is consistent with the sequence data. The aa sequence of S17 shows strong homology (76.9%) to that of yeast ribosomal protein 51 [Teem and Rosbash, Proc. Natl. Acad. Sci. USA 80 (1983) 4403-4407] in the two-thirds N terminal region. The cDNA clone specific for L30 protein (pRL30) has a 394-bp insert. The aa sequence of L30 protein was deduced from the nucleotide sequence of the cDNA. The protein consists of 114 aa residues with an Mr of 12 652. When compared with the N-terminal aa sequence of rat liver L30 protein [Wool, Annu. Rev. Biochem. 48 (1979) 719-754], pRL30 was found not to contain the initiation codon and 5'-noncoding region. The cDNA showed twelve silent changes in the coding region, one point mutation and one base deletion in the 3'-noncoding region, compared with mouse genomic DNA for L30 protein [Wiedemann and Perry, Mol. Cell Biol. 4 (1984) 2518-2528]. PMID- 3840112 TI - Hereditary protein C deficiency. AB - Hereditary protein C deficiency, which is inherited as an autosomal-dominant trait, predisposes to venous thrombotic disease. Heterozygotes are at risk for superficial thrombophlebitis, deep venous thrombosis and/or pulmonary embolism, which may occur without apparent cause at a young age. Other manifestations are cerebral venous thrombosis and mesenteric vein thrombosis. In severe, often homozygous, protein C deficiency, a purpura fulminans syndrome may occur shortly after birth, resulting in death due to extensive thrombosis, if it is not adequately treated. The thrombotic manifestations in heterozygotes are effectively prevented by coumarin therapy. However, in the initial phase of oral anticoagulant therapy, the patients have an increased risk for the development of coumarin-induced haemorrhagic skin necrosis. The purpura fulminans syndrome can be treated with either replacement therapy or with coumarin therapy. Heparin appears to be ineffective in the prevention of both the purpura fulminans syndrome and the coumarin-induced skin necrosis. PMID- 3840113 TI - [Effects of antiarrhythmic drugs on rat erythrocytes, isolated hepatocytes and dipalmitoyl phosphatidyl choline (DPPC)-liposomes]. AB - The effects of antiarrhythmic drugs, aprindine, mexiletine and lidocaine, on rat erythrocytes, isolated rat hepatocytes and DPPC-liposomes were studied at various concentrations. Maximal inhibition of aprindine on the hypotonic hemolysis was observed at a concentration of 2 X 10(-4) M. In isolated rat hepatocytes, aprindine caused an increase in GOT leakage above 4 X 10(-4) M. Mexiletine and lidocaine caused a slight decrease in GOT. Only aprindine caused an increase in LDH leakage above 2 X 10(-4) M. In the relationship between the surface tension and pH conditions (pH 5.7, 7.4 and 8.0), aprindine and mexiletine indicated a depression of surface tension at a dose of 10(-4) M to 10(-3) M under all pH conditions. Lidocaine indicated a depression of surface tension at a dose of 10( 4) M at pH 8.0 only. Aprindine and mexiletine depressed the phase transition temperature (Tc) of DPPC-liposomes. The depression of Tc by aprindine was greater than that by mexiletine. The rank by order of surface activity was the same as that of enzyme leakage from hepatocytes, hemolysis of erythrocytes and depression of Tc in DPPC-liposomes in vitro. These results suggest that differences in membrane damage produced by antiarrhythmic drugs may by related to surface activity, which in turn may determine the extent of adsorption onto cell membranes. PMID- 3840115 TI - Normal values of two-dimensional echocardiographic evaluation of left and right ventricular geometry in children. AB - Normal values for left and right ventricular geometry in childhood were evaluated from two-dimensional echocardiograms using a specially-designed computer program package. Based on the normal values for ventricular cross-sectional areas, ventricular volumes were calculated applying the algorithm of "sphere volumes". For normal subjects, these "sphere volumes" were found to be linearly related to bodyweight which also can be seen in angiographic volume determinations. Thus, these echocardiographic "sphere volumes" could be transferred to actual ventricular volumes by using a factor which results from the different slopes of angio- and echocardiographic "sphere volumes" versus bodyweight. The mean relative error of ventricular volumes thus obtained from echocardiograms is comparable with that of angiocardiographic determinations except for right ventricular end-diastolic volumes. Parameters of wall thickness and myocardial volume are favourably calculated as myocardial area and related to cavity area. PMID- 3840114 TI - Oestrogenic potency of genistin and daidzin in mice. AB - The oestrogenic activity of genistin and daidzin was investigated in the B6D2F1 strain of mouse. Diethylstilboestrol and genistein were used as positive controls. The oestrogenic response to 1.5 mg genistin was equivalent to that of 1 mg genistein, giving a 1:1 molar relationship in oestrogenic activity between genistin and genistein. The oestrogenic response to 3.8 mg daidzin was equivalent to that of 1 mg genistein. Analysis of the blood obtained from the mice in this experiment failed to reveal any free genistein or daidzein in the plasma. PMID- 3840116 TI - 1,25-Dihydroxyvitamin D3/parathormone affect fetal osteoclastic bone resorption in vivo. PMID- 3840117 TI - Turnkey systems dominate hospital lab market. PMID- 3840118 TI - Preventive intervention approach to health education for STDs. PMID- 3840119 TI - STD education. Messages, target groups and the effect of an education programme. PMID- 3840120 TI - Health education for STD patients in a New Delhi hospital. PMID- 3840121 TI - Health education in the sexually transmitted diseases. PMID- 3840122 TI - Automating data manipulation for genetic analysis using a data base management system. AB - Inefficient coding and manipulation of pedigree data have often hindered the progress of genetic studies. In this paper we present the methodology for interfacing a data base management system (DBMS) called MEGADATS with a linkage analysis program called LIPED. Two families that segregate a dominant trait and one test marker were used in a simulated exercise to demonstrate how a DBMS can be used to automate tedious clerical steps and improve the efficiency of a genetic analysis. The merits of this approach to data management are discussed. We conclude that a standardized format for genetic analysis programs would greatly facilitate data analysis. PMID- 3840123 TI - General treatment of linear mammillary models. AB - This paper deals with the mathematical analysis of time courses of absorption, distribution and elimination of drug in a body, which is of considerable value in developing dosage schedules to provide optimal therapeutic action and to reduce the unwanted side effects due to accumulation of drug in the body to a minimum. We consider a general n-compartment model, where elimination occurs from the central compartment which, in turn, is connected reversibly with all other compartments. This linear mammillary model can be used to study the kinetics of protein metabolism in organism. We use an optimization method to characterize the pharmacokinetic profiles of drug for a general n-compartment model. Results are compared to those obtained by making use of (a) SAAM program and (b) an asymptotic method. PMID- 3840125 TI - A simple program in BASIC for least-squares fitting of certain equations to experimental data. AB - A program is presented that fits certain classes of theoretical equations to experimental data by the method of least squares. Equations that can be fitted by this program include all one-parameter functions and those two-parameter functions in which one of the parameters is a multiplicative factor. The program is in BASIC and thus can be used on any microcomputer equipped with that language, and its use is guided by on-screen prompts. PMID- 3840124 TI - Identification of pharmacokinetic parameters of two compartment open model with first order absorption. AB - This paper deals with the estimation of pharmacokinetic parameters of a two compartment open model with first order absorption from plasma level data. The eigen-values of the characteristic matrix of the given system are obtained by transforming them into a single variable and the global minimum of the deviation (for plasma concentrations) from the observed values is obtained through the solution of linear relations involving the eigen-values. The distribution volume and the lag time are also identified. Finally, the uniqueness of the absorption rate constant is obtained by the minimum energy principle. The model is tested for different sets of data for the drug Guanfacine, an antihypertensive drug. The results are compared to those obtained by the SAMM program. PMID- 3840126 TI - A prime number approach to biological sequencing. AB - Computational sequencing of nucleic acid and amino acid sequences is placing increasing demands on computer resources. The use of prime numbers is explored as a convenient means of improving program speed and reducing storage requirements. It is concluded that the application of the prime number approach leads to significant increases in speed and some reduction in storage requirements. PMID- 3840127 TI - An efficient medical database system implementation with its tool and data structure consideration. AB - The development of a new system for medical database application running on minicomputer under MUMPS system is described. Two kinds of data representation in global structure are briefly reviewed. The use of a subject oriented multi dimensional data structure greatly simplifies database design and facilitates data manipulation, organization, selective retrieval and software development. It is concluded that the program generator approach can provide the flexibility necessary for various applications and future growth of computerized medical record system. The final system has been proven effective in practical operation. The future extension concerns the introduction of multi-microprocessor structure and logic representation is presented. PMID- 3840128 TI - [Conception of a program for the treatment and statistical interrogation of data, LOGIST]. AB - This paper presents a general program which cannot only be used for the treatment and the statistical interrogations, but also for basic operations, such as the validity check and the preparation of data which is often necessary for other programs. Its use of language is simple, suitable and accessible to non specialists. The program is sufficiently complete so that it can treat some complex problems without requiring complementary programs. It can treat several problems simultaneously. This allows one to gain data-reading time and the program is therefore economical. Its domain of use is large: epidemiological studies, psychological and sociological investigations, biological studies, clinical research, chronological follow-up, examinations of faculties, . . . . The program is written in FORTRAN IV and thus transferable. It contains more than 25 000 instructions but needs limited place in the core memory (less than 64 000 words). Its structure allows further evolution and addition of new procedures or new methods. A transformation into a conversational form is considered. PMID- 3840129 TI - Induction of tolerance in mice and rats to the effect of endotoxin to decrease the hepatic microsomal mixed-function oxidase system. Evidence for a possible macrophage-derived factor in the endotoxin effect. AB - Daily administration of low, non-lethal doses of bacterial endotoxin to mice and rats has been shown to induce tolerance to the effect of an acute challenge dose of endotoxin to decrease the hepatic microsomal drug metabolizing activity, the level of cytochrome P-450, and to increase heme oxygenase activity. The serum collected at various times after injection of endotoxin into control animals when injected into untreated animals markedly depressed aniline hydroxylase activity, ethylmorphine N-demethylase activity, and the level of cytochrome P-450. Tolerant animals were not affected by the post-endotoxin serum injection, suggesting the decreased activity caused by the serum in untreated animals was probably due to endotoxin contained in the serum. Injection of tolerant mice and rats with supernatant medium obtained from cultures of peritoneal macrophages incubated with 100 micrograms/ml of endotoxin caused a loss of hepatic microsomal drug metabolizing activity, and a decrease in the level of cytochrome P-450. These results suggest that peritoneal macrophages release a factor in response to endotoxin that mediates the decreased hepatic mixed-function oxidase activity. PMID- 3840130 TI - The use of arthroscopy. PMID- 3840131 TI - Basic physics of neodymium:YAG laser. PMID- 3840132 TI - Neodymium:YAG laser microsurgery: fundamental principles and clinical applications. PMID- 3840133 TI - The role of neodymium:YAG laser in microsurgery of the glaucomas. PMID- 3840134 TI - Neodymium:YAG photodisruption of the anterior hyaloid face in aphakic flat chamber: a diagnostic and therapeutic tool. PMID- 3840135 TI - Neodymium:YAG laser vitreolysis. PMID- 3840136 TI - Ocular side effects following neodymium:YAG laser irradiation. PMID- 3840137 TI - Neodymium:YAG laser: theoretical and practical considerations. PMID- 3840138 TI - Neodymium:YAG laser safety considerations. PMID- 3840139 TI - The use of laser in eye surgery: morphological principles. PMID- 3840140 TI - Neodymium:YAG laser capsulotomy. PMID- 3840141 TI - Lymphocyte response to a bovine milk protein in ulcerative colitis. AB - A recently described in vitro test for cow's milk protein hypersensitivity was applied to adult patients with ulcerative colitis. The test system involved the culture of their peripheral blood lymphocytes with and without beta lactoglobulin, and the results were expressed as a stimulation index. Stimulation with beta-lactoglobulin was significantly higher (P less than 0.02) in patients with active disease than in those with inactive disease or in healthy controls. beta-Lactoglobulin was the only one of four cow's milk proteins that showed this effect. It is concluded that the cow's milk protein beta-lactoglobulin has a specific blastogenic effect on the lymphocytes of patients with active ulcerative colitis, and, therefore, may serve as a marker of disease activity. PMID- 3840142 TI - Seasonal variations in dietary iodine intake and thyrotoxicosis. AB - Food composition tables were used to estimate the iodine intake of 105 men and 112 women living in Cambridge who completed 7-day semi-weighed records of food consumption. Intakes in men ranged from 195 micrograms per day in summer to 306 micrograms in winter, and in women from 126 micrograms to 236 micrograms. Seasonal variations in intake were mainly due to seasonal differences in the iodine content of milk which varies directly in relation to farming practices. The authors speculate that a spring-summer peak in thyrotoxicosis incidence in Britain may be causally related to the high milk iodine levels in winter. PMID- 3840143 TI - Absorption of lard by infants. AB - The use of lard as the sole source of fat was investigated in a formula fed to healthy premature infants. It was absorbed as well as a conventional cow's milk fat/vegetable oil mixture in a control formula (which was otherwise identical), and is supported normal growth. Lard is cheaper than cow's milk fat and appears to be a satisfactory substitute as an energy source. PMID- 3840144 TI - Role of the platelet count in management of the high-risk obstetric patient. PMID- 3840145 TI - The medical computing curriculum at the University of New England College of Osteopathic Medicine. PMID- 3840146 TI - Somatic dysfunction as a predictor of coronary artery disease. PMID- 3840147 TI - Splenectomy in post-transfusion purpura: report of a case. PMID- 3840148 TI - The total body approach to the osteopathic management of temporomandibular joint dysfunction. PMID- 3840149 TI - Adjuvant chemo- and hormonal therapy in locally advanced breast cancer: a randomized clinical study. AB - Between 1977 and 1980, 118 breast cancer patients with locally advanced disease, T3B-4, any N, M0 or T1-3, tumor positive axillary apex biopsy, were randomized to one of three arms: I: radiotherapy (RT) to the breast and adjacent lymph node areas; II: RT followed by 12 cycles of cyclophosphamide, methotrexate, 5 fluorouracil (CMF) and tamoxifen during the chemotherapy period; III: 2 cycles of adriamycin and vincristine (AV), alternated with 2 cycles of CMF, then RT, followed by another 4 cycles of AV, alternated with 4 CMF; tamoxifen during the entire treatment period. The median follow-up period was 5 1/2 years. The adjuvant chemo- and hormonal therapy did not improve the overall survival; the 5 year survival was 37% for all three treatment arms. There was no statistically significant difference in RFS between the three modalities, nor when arm I was compared to arm II and III together, p = 0.11. Local recurrence (LR) was observed in 24 of the 86 patients (28%) who had reached complete remission (CR). LR was not statistically different over the three treatment arms. In 18 of the 24 patients with LR, distant metastases appeared within a few months from the local recurrence. In arm III, the CR rate after 4 cycles AV plus CMF and RT hardly changed after another 8 cycles of chemotherapy. The menopausal status did not influence the treatment results. Dose reduction in more than 4 cycles of chemotherapy was accompanied by better results, p = 0.04. IN CONCLUSION: adjuvant chemo- and hormonal therapy did not improve RFS and overall survival. These findings do not support the routine use of adjuvant chemo- and endocrine therapy for inoperable breast cancer. PMID- 3840151 TI - Computers in ophthalmology. PMID- 3840150 TI - Acid modification of thermal damage and its relationship to nutrient availability. AB - The purpose of this present investigation was to determine if the presence of exogenous nutrients constitutes a prerequisite for acid modification of thermal damage and to determine if thermal cytotoxicity is affected by nutrient availability under acid conditions. To this end, Chinese hamster ovary cells (CHO) were heated (42 degrees or 43 degrees C) and/or irradiated in either McCoy's medium containing 10% fetal bovine serum or glucose free Hanks Balanced Salt Solution (HBSS). Both thermal sensitivity and thermal radiosensitization were increased when CHO cells were treated under acid conditions (e.g., pH 6.8) compared to alkaline conditions (e.g., pH 7.2), independent of the media used. Furthermore, decreasing nutrient availability increased thermal cytotoxicity, but the increase was greatest at pH 7.2 compared to pH 6.8. This study indicates that thermal sensitivity is more dependent upon pH than upon nutrient availability. PMID- 3840152 TI - An intraocular lens power calculator for the IBM PC and PCjr computers using input variable selection. AB - A BASIC program to calculate intraocular lens power and refractive errors using previously derived equations is presented. The program was written for the IBM PC and PCjr computers with an emphasis on clinical usefulness. Program features include a comparison of refractive and axial length predictions of secondary implant power and velocity compensation for axial length measurements made on aphakic patients. Equation specification by input variable selection and automatic averaging of keratometer readings make the program highly efficient. PMID- 3840153 TI - Adechlorin, a new adenosine deaminase inhibitor containing chlorine production, isolation and properties. AB - Adechlorin exhibiting a potent inhibitory activity against calf intestinal adenosine deaminase was isolated from the cultured broth of Actinomadura sp. OMR 37. The molecular formula was C11H15N4O4Cl. The aglycone of adechlorin was identical with that of the known adenosine deaminase inhibitors coformycin and 2' deoxycoformycin. Adechlorin did not exhibit inhibitory activity against various bacteria and fungi at 1.0 mg/ml. The Ki values for adechlorin, coformycin and 2' deoxycoformycin against adenosine deaminase were determined to be 5.3 X 10(-10) M, 2.1 X 10(-10) M and 7.6 X 10(-11) M, respectively. Adechlorin as well as coformycin and 2'-deoxycoformycin enhanced the antiviral activity of Ara-A. The acute toxicity of adechlorin in mice was less than those of coformycin and 2' deoxycoformycin. PMID- 3840154 TI - Diazaquinomycin A, a new antifolate antibiotic, inhibits thymidylate synthase. AB - The inhibitory effect of diazaquinomycin A (DQM) on the growth of Enterococcus faecium was completely reversed by thymidine. Relatively large amounts of folate, dihydrofolate or leucovorin also reversed the activity of DQM. DQM showed cytotoxicity against Vero and Raji cells and the cytotoxicity was partially reversed by leucovorin or thymidine. With enzyme experiments, it was found that DQM inhibits TMP synthases from E. faecium and Ehrlich ascites carcinoma competitively with 5,10-methylenetetrahydrofolate, one of the substrates for the enzyme reaction. PMID- 3840155 TI - Structure of trienomycin A, a novel cytocidal ansamycin antibiotic. PMID- 3840156 TI - A novel antibiotic, sohbumycin. Taxonomy, fermentation, isolation and physico chemical and biological characteristics. AB - A new antibiotic sohbumycin, was isolated from the culture broth of Streptomyces sp. No. 82-85. It appeared to belong to the peptide lactone type of antibiotics from physico-chemical studies and has an empirical formula of C31H47N8O10Cl. In in vitro studies, the antibiotic was found to possess potent cytocidal activity against HeLa S3 cells and antimicrobial activities against Gram-positive bacteria with MIC values about 0.3-0.6 microgram/ml, but showed no activity on the Gram negative bacteria, yeast and fungi tested. PMID- 3840157 TI - 7-Hydroxyguanine, a novel antimetabolite from a strain of Streptomyces purpurascens. I. Taxonomy of producing organism, fermentation, isolation and biological activity. AB - Strain A-347, an actinomycete isolated from a soil sample, was found to produce a new antimetabolite, 7-hydroxyguanine. The aerial mycelium formed spiral spore chains with spiny spore surface. The chemical composition of strain A-347 indicated that it was an actinomycete of cell wall Type I. From its morphological, cultural, physiological characteristics and direct comparison with the type culture, this strain was classified as Streptomyces purpurascens. 7 Hydroxyguanine was purified from the broth filtrate by ion exchange chromatography and crystallized from hot 2 M NH4OH. 7-Hydroxyguanine inhibited the growth of experimental tumors such as L1210 leukemia. PMID- 3840158 TI - 7-Hydroxyguanine, a novel antimetabolite from a strain of Streptomyces purpurascens. II. Physico-chemical properties and structure determination. AB - The molecular formula of a new antimetabolite produced by Streptomyces purpurascens was determined to be C5H5N5O2 by elemental analysis, FD-MS and 13C NMR. Reduction of this antimetabolite with Raney nickel yielded guanine. The antimetabolite was distinguishable from known N-hydroxyguanines by comparison of their UV spectra. The structure of the antimetabolite was finally established to be 7-hydroxyguanine by X-ray crystallography. PMID- 3840159 TI - Threshold and loudness functions for pulsatile stimulation of cochlear implants. AB - Thresholds and loudness estimates were measured for biphasic pulsatile electrical stimulation of the auditory nerve. Measures were collected as a function of the parameters: pulse duration, and pulse rate. The results indicate that the sensations of threshold and loudness are determined by a complex function of the stimulating current waveform. For stimuli with the same charge, maximum loudness is seen at the shortest pulse durations, and a secondary maximum is seen at pulse durations of 2-3 ms/phase. It is possible that the secondary peak in the loudness function and the slow growth of loudness just above threshold for long pulses are indications of dendrite survival near the electrode. If this interpretation is valid, these measures could lead to perceptual tests of peripheral nerve viability. In addition, a speech processor device could use these measures to equalize the loudness of stimuli with different pulse durations and pulse rates. PMID- 3840160 TI - Current distributions in the cat cochlea: a modelling and electrophysiological study. AB - The current distribution of bipolar electrodes implanted into the scala tympani of the cat cochlea was investigated using a two-electrode masking technique. Two electrode masking is a non-invasive technique which requires two electrically independent electrodes and relies upon the forward masking of the electrically evoked brainstem response to a probe stimulus by that of a preceding test stimulus. The technique was described in terms of a model, which enabled an approach for estimating the scala tympani length constant to be established. Model results have shown good agreement with electrophysiological results. Application of the model confirmed the scala tympani length constant within the basal turn of the cochlea to lie between 3 and 4 mm. PMID- 3840161 TI - Identification and characterization of glycine-extended post-translational processing intermediates of progastrin in porcine stomach. AB - We developed a radioimmunoassay specific for glycine-extended progastrin processing intermediates (G-Gly) using antisera generated against the synthetic peptide Tyr-Gly-Trp-Met-Asp-Phe-Gly. Distribution of immunoreactivity in the porcine gastrointestinal tract obtained with this antibody paralleled that of gastrin with the mucosa containing the highest quantity, 116 +/- 22 pmol/g, wet weight (mean +/- S.E., n = 5), or roughly 4% of gastrin concentration. This immunoreactivity was localized specifically to antral mucosal G-cells by immunohistochemistry. On Sephadex G-50 column chromatography of porcine antral mucosal extracts glycine-extended progastrin processing intermediates were separated into three principal molecular forms, each corresponding to known molecular forms of gastrin, component I, tetratriacontagastrin (G34) and heptadecagastrin (G17). Following purification by antibody-coupled affinity chromatography, one molecular form corresponding to G17 in size was shown to have an amino terminus identical to that of G17. Another molecular form corresponding to G34 in size could be converted to the molecular form corresponding to G17 by tryptic digestion. Our findings indicate that glycine-extended progastrin processing intermediates may serve as immediate precursors for each molecular form of gastrin, thus suggesting an alternative pathway for gastrin biosynthesis more complex than that previously conceived. PMID- 3840162 TI - Structural and functional relationships of human ferritin H and L chains deduced from cDNA clones. AB - We have isolated essentially full-length cDNA clones for human ferritin H and L chains from a human liver cDNA library. This allows the first comparison of H and L nucleotide and amino acid sequences from the same species as well as ferritin L cDNA sequences from different species. We conclude that human H and L ferritins are related proteins which diverged about the time of evolution of birds and mammals. We also deduce the secondary structure of the H and L subunits and compare this with the known structure of horse spleen ferritin. We find that residues involved in subunit interaction in shell assembly are highly conserved in H and L sequences. However, we find several interesting differences in H subunits at the amino acid residues involved in iron transport and deposition. These substitutions could account for known differences in the uptake, storage, and release of iron from isoferritins of different subunit composition. PMID- 3840163 TI - Ferritin H and L chains are derived from different multigene families. AB - This paper explores the complexity of human ferritin H and L genes. We show that essentially full-length cDNA clones for human ferritin H and L chains do not cross-hybridize under moderate stringency conditions and present the first comparisons of H and L mRNAs and genes from the same species. Northern blot analyses indicate that the H and L mRNAs each contain about 1100 nucleotides. Subprobe analyses of Southern blots show that both H and L genes exist as multiple gene families. Both the 5' and 3' sequences of the H genes are heterogeneous, whereas the 3' end of the L gene is relatively conserved. PMID- 3840164 TI - Monoclonal antibody to the rat glucocorticoid receptor. Relationship between the immunoreactive and DNA-binding domain. AB - The region of the glucocorticoid receptor that reacted with a monoclonal antibody (BUGR-1) was identified. In order to identify the immunoreactive region, the rat liver glucocorticoid receptor was subjected to limited proteolysis; immunoreactive fragments were identified by Western blotting. The monoclonal antibody reacted with both the undigested Mr approximately 97,000 receptor subunit and a Mr approximately 45,000 fragment containing the steroid-binding and DNA-binding domains. Digestion by trypsin also produced two steroid-binding fragments of Mr approximately 27,000 and 31,000 which did not react with the antibody and an immunoreactive Mr approximately 16,000 fragment. This Mr approximately 16,000 fragment was shown to bind to DNA-cellulose, indicating that it contained a DNA-binding domain of the receptor. The undigested receptor must have steroid associated with it to undergo activation to a DNA-binding form. However, the Mr approximately 16,000 immunoreactive fragment binds to DNA cellulose even if it is obtained by digestion of the steroid-free holoreceptor which does not itself bind to DNA. PMID- 3840165 TI - The pairing activity of stable nucleoprotein filaments made from recA protein, single-stranded DNA, and adenosine 5'-(gamma-thio)triphosphate. AB - Under conditions that diminish secondary structure in single-stranded DNA, stable presynaptic filaments can be formed by recA protein in the presence of the nonhydrolyzable analog ATP gamma S, without the need for Escherichia coli single strand binding protein. Such stable presynaptic filaments resemble those formed in the presence of ATP and pair efficiently with homologous duplex DNA. Since this kind of stable filament does not displace a strand from the duplex molecule, it provides a model substrate to study synapsis independent of the earlier and later stages of the recA reaction. Even though detectable strand displacement did not occur in the presence of ATP gamma S, both single strand and double strand breaks in duplex DNA stimulated homologous pairing. These and related observations support the view that the presynaptic nucleoprotein filament and naked duplex DNA intertwine to form a nascent joint in which the duplex DNA is partially unwound, i.e. in which the pitch of the involved duplex segment is reduced. PMID- 3840166 TI - Modulation of the estrogen receptor's affinity for DNA by estradiol. AB - The binding constant for estrogen receptor-DNA interaction when measured in the presence and absence of estradiol revealed a distinct difference dependent upon whether the receptor was hormone-bound or hormone-free. The binding constant of estrogen receptor-DNA interaction was determined by analysis of the exponential elution profile of the estrogen receptor from DNA-Sepharose columns using Tris buffer at a constant salt concentration. The binding constant of the hormone bound estrogen receptor for DNA in Tris buffer, pH 7.4, containing 0.2 M KCl was 10.1 +/- 0.8 X 10(6) M-1, 5-fold higher than the value for the hormone-free estrogen receptor. Analysis of the number of ionic bonds between the estrogen receptor and DNA indicates that the hormone-free receptor establishes eight salt bridges, while the hormone-bound estrogen receptor establishes 10-13. The affinity of the hormone-bound estrogen receptor for DNA in Tris buffer at pH 7.4 in 0.2 M KCl is 10-fold greater than at pH 8.0, suggesting that ionic bonding between the receptor and DNA may involve histidine residues of the receptor. The concentration-dependence of the hormone-bound receptor's affinity for DNA emphasizes the receptor's associative state as an influence on the receptor's DNA binding characteristics. Our results demonstrate that estradiol modifies the conformation of the estrogen receptor to a state having an increased affinity for DNA. PMID- 3840167 TI - Interaction of malonyl-CoA and 2-tetradecylglycidyl-CoA with mitochondrial carnitine palmitoyltransferase I. AB - Malonyl-CoA and 2-tetradecylglycidyl-CoA (TG-CoA) are potent inhibitors of mitochondrial carnitine palmitoyltransferase I (EC 2.3.1.21). To gain insight into their mode of action, the effects of both agents on mitochondria from rat liver and skeletal muscle were examined before and after membrane disruption with octylglucoside or digitonin. Pretreatment of intact mitochondria with TG-CoA caused almost total suppression of carnitine palmitoyltransferase I, with concomitant loss in malonyl-CoA binding capacity. However, subsequent membrane solubilization with octylglucoside resulted in high and equal carnitine palmitoyltransferase activity from control and TG-CoA pretreated mitochondria; neither solubilized preparation showed sensitivity to malonyl-CoA or TG-CoA. Upon removal of the detergent by dialysis the bulk of carnitine palmitoyltransferase was reincorporated into membrane vesicles, but the reinserted enzyme remained insensitive to both inhibitors. Carnitine palmitoyltransferase containing vesicles failed to bind malonyl-CoA. With increasing concentrations of digitonin, release of carnitine palmitoyltransferase paralleled disruption of the inner mitochondrial membrane, as reflected by the appearance of matrix enzymes in the soluble fraction. The profile of enzyme release was identical in control and TG CoA pretreated mitochondria even though carnitine palmitoyltransferase I had been initially suppressed in the latter. Similar results were obtained when animals were treated with 2-tetradecylglycidate prior to the preparation of liver mitochondria. We conclude that malonyl-CoA and TG-CoA interact reversibly and irreversibly, respectively, with a common site on the mitochondrial (inner) membrane and that occupancy of this site causes inhibition of carnitine palmitoyltransferase I, but not of carnitine palmitoyltransferase II. Assuming that octylglucoside and digitonin do not selectively inactivate carnitine palmitoyltransferase I, the data suggest that both malonyl-CoA and TG-CoA interact with a regulatory locus that is closely juxtaposed to but distinct from the active site of the membrane-bound enzyme. PMID- 3840168 TI - Nonrandom location of H1-H1 degree histones on chromatin of mouse liver and brain. AB - The electrophoretic behavior of nucleosome dimers reconstituted with H1 or H1 degrees and the features of the digestion of those reconstituted dimers with micrococcal nuclease were first investigated. Both criteria appear to support the notion that H1 degrees can replace H1 on the nucleosome on a one-to-one basis and that both proteins fulfill a similar structural role in chromatin. H1/H1 degrees ratios in different chromatin subfractions from mouse liver were then indirectly measured by means of an electrophoretic purification of H1 degrees- from H1 containing nucleosome monomers, followed by a titration of different specific nucleotide sequences in the corresponding DNAs. Satellite and globin containing chromatin subfractions were found to contain only about half the amount of H1 degrees which is normally encountered in bulk chromatin, indicating a nonrandom location of H1-H1 degrees variants on untranscribed sequences; in contrast, titrations with cDNA from poly(A+) RNA and albumin cDNA show an approximately 2 fold enrichment in H1 degrees for the corresponding chromatin when compared to the same bulk chromatin. In the brain, inactive albumin chromatin contains a relative amount of both H1 variants similar to that found in satellite or globin chromatin in liver. Amounts of H1 degrees can, therefore, be correlated with different states of chromatin: an inactive state with a lower amount of H1 degrees and a potentially active state with an enrichment in H1 degrees. PMID- 3840169 TI - Structural analogs of alkylacetylglycerophosphocholine inhibitory behavior on platelet activation. AB - Several analogs of alkylacetylglycerophosphocholine (AGEPC; platelet-activating factor) were investigated as potential selective inhibitors of AGEPC-induced activation of washed rabbit platelets. Two particular compounds, CV-3988 (rac-3 (N-n-octadecylcarbamoyloxy)-2-methoxypropyl-2-thiazolioethyl++ + phosphate) and U66985 (1-O-octadecyl-2-acetyl-sn-glycero-3-phosphoric acid-6'-trimethylammonium hexyl ester) emerged as particularly active and effective inhibitors. Aggregation and secretion profiles, as well as the degradation of inositol phospholipids and production of phosphatidic acid, were used as monitors of their inhibitory capabilities. U66985 was the most effective inhibitor, giving an IC50 value of 4.1 +/- 1.5 X 10(-8) M against a challenge of 1 X 10(-10) M AGEPC in the secretion assay. Phospholipid turnover was blocked completely at this inhibitor concentration. On the other hand, while CV-3988 was an effective inhibitor, a higher concentration was required and a more restricted range of activity was noted with an IC50 value of 5.9 +/- 1.3 X 10(-7) M against a challenge of 1 X 10( 10) M AGEPC in the secretion assay. While CV-3988 did indeed completely block the turnover of inositol phospholipids and phosphatidic acid formation, these effects were noted at a higher concentration than with U66985. On the basis of data obtained in desensitization experiments with AGEPC and U66985, it appears that each inhibitor occupies the same receptor site as the agonist, AGEPC. These results illustrate the usefulness of these AGEPC analogs in exploring the biochemical characteristics of the interaction of AGEPC with a cell. PMID- 3840170 TI - The national Canadian study of carcinoma of the prostate treated by external beam radiation (1970-1978): I. a medical audit. AB - Data on the management of carcinoma of the prostate by radiation therapy were obtained from 12 centres in Canada. The outcome in a total of 1496 patients has been analysed as a medical audit. The crude five-year survival is 69% and at eight years it is 51%. PMID- 3840171 TI - Computer systems for laboratory networks and high-performance NMR. AB - Modern computer technology is significantly enhancing the associated tasks of spectroscopic data acquisition and data reduction and analysis. Distributed data processing techniques, particularly laboratory computer networking, are rapidly changing the scientist's ability to optimize results from complex experiments. Optimization of nuclear magnetic resonance spectroscopy (NMR) and magnetic resonance imaging (MRI) experimental results requires use of powerful, large memory (virtual memory preferred) computers with integrated (and supported) high speed links to magnetic resonance instrumentation. Laboratory architectures with larger computers, in order to extend data reduction capabilities, have facilitated the transition to NMR laboratory computer networking. Examples of a polymer microstructure analysis and in vivo 31P metabolic analysis are given. This paper also discusses laboratory data processing trends anticipated over the next 5-10 years. Full networking of NMR laboratories is just now becoming a reality. PMID- 3840172 TI - High-performance liquid chromatographic assay of 2-[2-methoxy-4 (methylsulfinyl)phenyl]-1H-imidazo-[4,5-c] pyridine hydrochloride, a potent cardiotonic agent, and two metabolites in plasma. PMID- 3840173 TI - Low serum concentrations of 1,25-dihydroxyvitamin D in human magnesium deficiency. AB - The effect of magnesium deficiency on vitamin D metabolism was assessed in 23 hypocalcemic magnesium-deficient patients by measuring the serum concentrations of 25-hydroxyvitamin D (25OHD) and 1,25-dihydroxyvitamin D [1,25-(OH)2D] before, during, and after 5-13 days of parenteral magnesium therapy. Magnesium therapy raised mean basal serum magnesium [1.0 +/- 0.1 (mean +/- SEM) mg/dl] and calcium levels (7.2 +/- 0.2 mg/dl) into the normal range (2.2 +/- 0.1 and 9.3 +/- 0.1 mg/dl, respectively; P less than 0.001). The mean serum 25OHD concentration was in the low normal range (13.2 +/- 1.5 ng/ml) before magnesium administration and did not significantly change after this therapy (14.8 +/- 1.5 ng/ml). Sixteen of the 23 patients had low serum 1,25-(OH)2D levels (less than 30 pg/ml). After magnesium therapy, only 5 of the patients had a rise in the serum 1,25-(OH)2D concentration into or above the normal range despite elevated levels of serum immunoreactive PTH. An additional normocalcemic hypomagnesemic patient had low 1,25-(OH)2D levels which did not rise after 5 days of magnesium therapy. The serum vitamin D-binding protein concentration, assessed in 11 patients, was low (273 +/- 86 micrograms/ml) before magnesium therapy, but normalized (346 +/- 86 micrograms/ml) after magnesium repletion. No correlation with serum 1,25-(OH)2D levels was found. The functional capacity of vitamin D-binding protein to bind hormone, assessed by the internalization of [3H]1,25-(OH)2D3 by intestinal epithelial cells in the presence of serum was not significantly different from normal (11.42 +/- 1.45 vs. 10.27 +/- 1.27 fmol/2 X 10(6) cells, respectively). These data show that serum 1,25-(OH)2D concentrations are frequently low in patients with magnesium deficiency and may remain low even after 5-13 days of parenteral magnesium administration. The data also suggest that a normal 1,25 (OH)2D level is not required for the PTH-mediated calcemic response to magnesium administration. We conclude that magnesium depletion may impair vitamin D metabolism. PMID- 3840174 TI - Characteristics and bisphosphonate treatment of a patient with juvenile osteoporosis. AB - We studied a 13 1/2-yr-old boy with severe juvenile osteoporosis and multiple metaphyseal and vertebral fractures. Biochemically, there was evidence of non-PTH mediated excessive bone resorption, low intestinal calcium absorption, and a strikingly negative calcium balance. He was treated with (3-amino-1 hydroxypropylidene)-1,1-bisphosphonate, a bisphosphonate capable of inhibiting bone resorption rapidly, and had dramatic clinical and biochemical improvement. All indices of resorption were normal within a week after initiation of therapy and his 1,25-dihydroxyvitamin D concentration, which was only 9.6 pg/ml before treatment, rose to 62.4 pg/ml. These changes were associated with an increase in calcium absorption and positive calcium balance. Radiological improvement with healing of metaphyseal and one diaphyseal fractures and signs of sclerosis near the growth plates of the affected metaphyses and at the end plates of the vertebrae also occurred. (3-Amino-1-hydroxypropylidene)-1,1-bisphosphonate, therefore, with its rapid suppression of resorption and the accompanying hormonal changes, is a very effective treatment for juvenile osteoporosis. The primary defect of this obscure syndrome seems to be uncontrolled activity of metaphyseal osteoclasts; disturbances of vitamin D metabolism and of intestinal calcium absorption are secondary events. PMID- 3840175 TI - Serum protein binding of 1,25-dihydroxyvitamin D: a reevaluation by direct measurement of free metabolite levels. AB - Using the technique of centrifugal ultrafiltration isodialysis to measure the free concentration of 1,25-dihydroxyvitamin D [1,25-(OH)2D], we determined the affinity of serum proteins for 1,25-(OH)2D both by Scatchard analysis (increasing ligand concentration at fixed binding site concentrations) and by a novel analysis in which the binding site concentrations were varied (serial dilution) at fixed ligand concentrations. The high affinity binding constant in serum for 1,25-(OH)2D was 3.7 X 10(7) M-1 by Scatchard analysis and 4.2 X 10(7) M-1 by serial dilution analysis. Human serum albumin had a much lower affinity for 1,25 (OH)2D (5.4 X 10(4) M-1). When vitamin D-binding protein (DBP) was selectively removed from serum by an actin affinity column, the affinity of the remaining serum proteins for 1,25-(OH)2D was that of albumin. Postulating a two-site model (DBP and albumin) for transport of 1,25-(OH)2D in serum and incorporating the estimated affinity constants of DBP and albumin for this metabolite, we calculated that 85% of total circulating 1,25-(OH)2D is transported in blood bound to DBP in normal individuals (0.4% is free and 14.6% is bound to albumin). In patients with liver disease, 73% is bound to DBP (1.1% is free and 25.9% is bound to albumin). Using this same two site model, we found a reasonable correlation (r = 0.612; P less than 0.001) between the measured free 1,25-(OH)2D level and the calculated free 1,25-(OH)2D level in serum based on albumin and DBP concentrations in 16 normal subjects and 16 patients with liver disease. These results confirm the concept that although DBP is the principal protein carrier of 1,25-(OH)2D in serum, albumin is a major secondary carrier, especially in patients with low DBP levels. PMID- 3840176 TI - Glutathione cycle activity and pyridine nucleotide levels in oxidant-induced injury of cells. AB - Exposure of target cells to a bolus of H2O2 induced cell lysis after a latent period of several hours, which was prevented only when the H2O2 was removed within the first 30 min of injury by addition of catalase. This indicated that early metabolic events take place that are important in the fate of the cell exposed to oxidants. In this study, we described two early and independent events of H2O2-induced injury in P388D1 macrophagelike tumor cells: activation of the glutathione cycle and depletion of cellular NAD. Glutathione cycle and hexose monophosphate shunt (HMPS) were activated within seconds after the addition of H2O2. High HMPS activity maintained glutathione that was largely reduced. However, when HMPS activity was inhibited--by glucose depletion or by incubation at 4 degrees C--glutathione remained in the oxidized state. Total pyridine nucleotide levels were diminished when cells were exposed to H2O2, and the breakdown product, nicotinamide, was recovered in the extracellular medium. Intracellular NAD levels fell by 80% within 20 min of exposure of cells to H2O2. The loss of NADP(H) and stimulation of the HMPS could be prevented when the glutathione cycle was inhibited by either blocking glutathione synthesis with buthionine sulfoximine (BSO) or by inhibiting glutathione reductase with (1,3 bis) 2 chlorethyl-1-nitrosourea. The loss of NAD developed independently of glutathione cycle and HMPS activity, as it also occurred in BSO-treated cells. PMID- 3840177 TI - Oxidants increase paracellular permeability in a cultured epithelial cell line. AB - Inflammation of epithelia is an important step in the pathophysiology of a wide variety of diseases. Because reactive oxygen metabolites are important effector molecules of acute inflammation, we examined the effect of oxidants on the barrier function of a cultured epithelium, Madin Darby Canine Kidney cells, by measuring the transepithelial electrical conductance, Gt, of monolayers grown on permeable supports. We found that H2O2, added directly or generated with glucose oxidase, increased Gt. Similar effects were observed with addition of xanthine and xanthine oxidase, a system which enzymatically generates superoxide radical O2-. The oxidant-induced increase in Gt was reversible if the exposure to oxidants was not prolonged (less than 20 min), and if the concentration of H2O2 was less than 5 X 10(-3) M. The increase in Gt suggested that oxidants increase the permeability of the paracellular pathway, a suggestion supported by an oxidant-induced increase in the permeability to 14C-mannitol, which primarily crosses epithelia via the extracellular route. In addition to functional changes in the epithelial monolayer, oxidants changed the cell morphology; after H2O2 exposure, the cells tended to pull apart, most prominently at their basolateral surfaces. These changes were heterogeneous with most areas showing no changes. Some of the morphologic changes could be reversed if the exposure to H2O2 was limited. We also observed a disruption of the normal pattern of the actin cytoskeleton, particularly in the area of cell to cell junctions, as demonstrated by fluorescent staining of f-actin with rhodamine phallicidin. These functional and structural findings indicate that oxidants increase the permeability of the paracellular pathway in a cultured epithelium. The changes can be reversible, and are accompanied by alterations in organization of the cell cytoskeleton. These studies demonstrate the dynamic nature of the interaction between epithelial cells and oxygen metabolites. PMID- 3840179 TI - Development of the spinocerebellar system in the postnatal rat. AB - The distribution of spinocerebellar projections from birth to adulthood in rats was analyzed by anterograde and retrograde tracing methods. A correlation between mossy fiber synaptogenesis and the establishment of spinocerebellar topography was also investigated with electron microscopy. Experiments with retrograde transport techniques indicate that the spinal axons reach the cerebellum in two successive groups: the first one, appearing prenatally, contains axons from neurons in the central cervical nucleus, Clarke's column, the sacral nucleus of Stilling, as well as from border cells. The second group, which reaches the cerebellum by P3, arises from new neurons of the same nuclear regions and from scattered cells of the spinal gray matter. The distribution and the morphological appearance of the spinal cells change between P1 and P3 and give the adult pattern by P7. The establishment of spinocerebellar projections occurs in four successive stages. In a first stage, spinal axons reach the cerebellum and occupy the prospective white matter of the anterior vermal lobe and of the pyramis. Later, during a "waiting" stage between P1 and P3, the spinal fibers become denser in the central white matter of both their anterior and posterior target zones but do not penetrate the gray matter. From P3 to P5 the protocolumnar stage takes place, and spinal axons invade the granular layer of the anterior lobe, where they begin to be organized in nascent sagittal columns. At the end of this stage, identifiable synaptic contacts between mossy terminals and granule cell dendrites are first observed in the anterior lobe by electron microscopy. In the pyramis, invasion of the granular layer begins only at P5. Between P5 and P7 the low intercolumnar dispersion of spinal fibers disappears and the projection reaches its fourth and final stage, characterized by a columnar organization corresponding to the adult pattern of the spinocerebellar projection. These results indicate that (1) the adult pattern of spinocerebellar projections is attained by P7. (2) The asynchronous invasion of the gray matter in the anterior and posterior lobes may be related to the chronology of mossy fiber maturation in these regions. (3) There is a temporal correlation between the columnar organization of the spinal axons and the appearance of the earliest-maturing mossy rosettes. However, a clear relationship between synaptogenesis and topographic organization could not be demonstrated. PMID- 3840180 TI - The connections between the olfactory bulb and the brain in the goldfish. AB - We have investigated olfactory bulb connections in the goldfish by using both horseradish peroxidase applied to olfactory tract lesions and wheat germ agglutinin-conjugated peroxidase administered to the olfactory bulb. The projections from the bulb pass to the brain in two major bundles: the lateral and the medial olfactory tracts. The lateral tract innervates the posterior terminal field in the area dorsalis. The medial tract divides into two rami. The dorsolateral ramus is the most substantial olfactory bundle in the brain and innervates several targets in both the area dorsalis and the area ventralis. The ventromedial ramus appears to innervate targets in the area ventralis exclusively. In addition, fibers of the medial olfactory tract (both rami) innervate the preoptic nucleus as well as targets in the diencephalon and, possibly, in the mesencephalon as well. Olfactory fibers from the dorsolateral and ventro-medial rami cross the midline in the dorsal and ventral olfactory decussations, respectively. Between these two decussations is a dense olfactory plexus which has not previously been reported, and which may serve as a nexus allowing interchange of fibers between the two olfactory rami. The terminal nerve in the goldfish has two parts. The major part of the nerve projects to the ventral nucleus (Vv) and is far more extensive than has previously been reported. A much less substantial component of the terminal nerve projects to the two retinae. There are four large groups of cells in the telencephalon which project to the olfactory bulb. Of these two, the dorsal and the anterolateral groups have not been described in previous studies of the goldfish. We also report weakly labeled bulbopetal cells in the nucleus preglomerulosus and in the locus ceruleus. PMID- 3840178 TI - Catalytic defect of medium-chain acyl-coenzyme A dehydrogenase deficiency. Lack of both cofactor responsiveness and biochemical heterogeneity in eight patients. AB - Medium-chain acyl-coenzyme A (CoA) dehydrogenase (MCADH; EC 1.3.99.3) deficiency (MCD) is an inborn error of beta-oxidation. We measured 3H2O formed by the dehydrogenation of [2,3-3H]acyl-CoAs in a 3H-release assay. Short-chain acyl-CoA dehydrogenase (SCADH; EC 1.3.99.2), MCADH, and isovaleryl-CoA dehydrogenase (IVDH; EC 1.3.99.10) activities were assayed with 100 microM [2,3-3H]butyryl-, octanoyl-, and -isovaleryl-CoAs, respectively, in fibroblasts cultured from normal controls and MCD patients. Without the artificial electron acceptor phenazine methosulfate (PMS), MCADH activity in fibroblast mitochondrial sonic supernatants (MS) was 54% of control in two MCD cell lines (P less than 0.05). Addition of 10 mM PMS raised control acyl-CoA dehydrogenase activities 16-fold and revealed MCADH and SCADH activities to be 5 (P less than 0.01) and 73% (P greater than 0.1) of control, respectively. Thus, the catalytic defect in MCD involves substrate binding and/or dehydrogenation by MCADH and not the subsequent reoxidation of reduced MCADH by electron acceptors. 20 microM flavin adenine dinucleotide (FAD) did not stimulate MCD MCADH activity in either the 3H-release or electron-transfer(ring) flavoprotein-linked dye-reduction assays. Mixing experiments revealed no MCADH inhibitor in MCD MS; IVDH activities were identical in both control and MCD MS. In postmortem liver MS from another MCD patient, 3H2O formation from [2,3-3H]octanoyl-CoA was 15% of control. When 3H2O formation was assayed with 200 microM [2,3-3H]acyl-CoAs, 15 mM PMS, and 20 microM FAD in fibroblast sonic supernatants from seven MCD cell lines, SCADH, MCADH, and IVDH activities were 72-112% (P greater than 0.1), 4-9% (P less than 0.01), and 86 135% (P greater than 0.1) of control, respectively, revealing no significant biochemical heterogeneity among these patients. PMID- 3840181 TI - Projections from the anterior ventral cochlear nucleus to the central nucleus of the inferior colliculus in young and aging C57BL/6 mice. AB - Projections from the anterior ventral cochlear nucleus (AVCN) to the central nucleus of the inferior colliculus (ICC) were studied in young and aging C57BL/6 mice. The latter animals demonstrate progressive loss of hearing. Wheat germ agglutinin-horseradish peroxidase (WGA-HRP) was injected into the inferior colliculus and retrograde transport to the AVCN sections, quality of labelling, number of labelled neurons adjusted for injection size, or topographic organization of projections. Thus, despite progressing loss of auditory sensitivity, chronic profound hearing loss (oldest animals), and aging, projections from AVCN to ICC remain stable. PMID- 3840182 TI - Long ascending projections to the midbrain from cells of lamina I and nucleus of the dorsolateral funiculus of the rat spinal cord. AB - Small volumes (5-40 nl) of an aqueous solution of wheat-germ-agglutinin conjugated horseradish peroxidase (WGA-HRP) were injected unilaterally into midbrain structures of 18 adult, albino rats. In 17 of these preparations cells of many types were found to be retrogradely labeled in cervical and lumbar spinal cord segments. The data reported here concern the number and location of labeled cells from injection sites in the midbrain that affected two distinct cell populations: neurons within the marginal layer (lamina I cells) and neurons of the nucleus of the dorsolateral funiculus (NDLF cells). In ten of the preparations, only nine of which are reported in detail here, a total of 1,831 labeled lamina I cells were identified. In the lumbar enlargement they reached a density of more than 60 cells/mm. Of these, 85% projected to medial portions of the caudal, contralateral midbrain. Injection sites that were centered in the caudal periaqueductal gray (PAG) and/or in the immediately adjacent region of nucleus cuneiformis labeled the largest numbers of lamina I cells. Cells of the NDLF were retrogradely labeled in all preparations in which lamina I cells were labeled but they were also observed in five cases in which lamina I cells were not labeled. A total of 1,914 NDLF cells were labeled from all injection sites. These cells were found to have essentially a bilateral distribution with 57% of the cells located in the contralateral DLF. Although there is substantial overlap between the terminal fields of lamina I and NDLF cells within the midbrain, NDLF cells had a more diffuse target area encompassing the reticular core of the midbrain and PAG, bilaterally, while the target area for lamina I cells was comparatively discrete, being largely restricted to the more medially situated midbrain structures, contralaterally. Whether the terminations of lamina I cells in and near the PAG are from collaterals of spinothalamic neurons originating in lamina I, or a subclass of lamina I neurons that project exclusively to the midbrain, is not known. It is significant, however, that lamina I cells, known to be activated by noxious stimuli to the skin, should project to a region of the brain stem from which analgesia can be produced by electrical stimulation or by local application of opiates. PMID- 3840183 TI - The central organization of the vagus nerve innervating the stomach of the rat. AB - We employed the neural tracers cholera toxin-horseradish peroxidase and wheat germ agglutinin-horseradish peroxidase to examine the organization of the afferent and efferent connections of the stomach within the medulla oblongata of the rat. The major finding of this study is that gastric motoneurons of the dorsal motor nucleus (DMN) possess numerous dendrites penetrating discrete regions of the overlying nucleus of the solitary tract (NTS). In particular, dendritic labelling was present in areas of NTS which also received terminals of gastric vagal afferent fibers such as the subnucleus gelatinosus, nucleus commissuralis, and medial nucleus of NTS. This codistribution of afferent and efferent elements of the gastric vagus may provide loci for monosynaptic vagovagal interactions. A small number of dendrites of DMN neurons penetrated the ependyma of the fourth ventricle and a few others entered the ventral aspect of the area postrema, thus making possible the direct contact of preganglionic neurons with humoral input from the cerebrospinal fluid and/or the peripheral plasma. Nucleus ambiguus neurons projecting to the stomach predominantly innervate the forestomach. The dendrites of these cells, when labelled, were generally short, and extended beyond the compact cluster of ambiguus neurons in a ventrolateral direction, parallel to the fascicles of vagal efferent fibers traversing the medulla. PMID- 3840184 TI - An HRP-TMB ultrastructural study of rubral afferents in the rat. AB - The projections from the deep cerebellar nuclei and the sensorimotor cortex to the red nucleus were studied in the rat using anterograde transport of horseradish peroxidase conjugated with wheat germ agglutinin (HRP-WGA). The anterogradely transported HRP-WGA was visualized ultrastructurally by using a modification of the tetramethylbenzidine (TMB) histochemical technique of Carson and Mesulam ('82). Following injection of HRP-WGA into the sensorimotor cortex, ultrastructural examination of anterograde labeling in the ipsilateral red nucleus revealed labeled synaptic terminals located on small-diameter dendrites of the parvocellular region. These terminals made asymmetrical contacts and contained round vesicles. HRP-WGA placement in the nucleus lateralis resulted in anterograde labeling of synaptic terminals which made asymmetrical contacts with small- to medium-sized dendrites of the parvocellular red nucleus. Similar placements in the nucleus interpositus gave rise to anterograde labeling of synaptic terminals which made asymmetrical contacts with somata and proximal dendrites of magnocellular neurons. In addition, retrograde labeling of magnocellular neurons was also observed following HRP-WGA placements in the nucleus interpositus. Anterogradely labeled interpositorubral synaptic terminals were located on retrogradely labeled rubrocerebellar neurons. The rat red nucleus thus receives topographically organized afferents which are characterized by their specificity in location at the cellular level. PMID- 3840185 TI - Observation on the use of 1 alpha-hydroxyvitamin D3 in the prevention of bovine parturient paresis: the effect of a single injection on plasma 1 alpha hydroxyvitamin D3, 1,25-dihydroxyvitamin D3, calcium, and hydroxyproline. AB - Israeli Friesian cows in the third or later lactation, were injected intramuscularly with 1 alpha-hydroxyvitamin D3 in propylene glycol. Plasma 1 alpha-hydroxyvitamin D3 peaked 24 to 48 h after 700 micrograms of the drug was injected and decreased to the initial concentration 4 d later. The disappearance rate of 1 alpha-hydroxyvitamin D3 from the blood was .330 d-1 (biological half life of 2.1 d). Plasma 1,25-dihydroxyvitamin D3 peaked 24 to 48 h after the injection and approached the initial concentration 5 to 7 d later. Plasma calcium increased within 24 h, reached a plateau at 4 to 6 d, and then decreased. Administration of 700 micrograms 1 alpha-hydroxyvitamin D3 resulted in higher plasma 1,25-dihydroxyvitamin D3 and calcium concentrations than when 350 micrograms of the drug was injected. 1 alpha-Hydroxyvitamin D3 did not affect plasma hydroxyproline. The injection of 700 micrograms 1 alpha-hydroxyvitamin D3 52 to 36 h before parturition resulted in a greater increase in plasma 1,25 dihydroxyvitamin D3 than that obtained with 350 micrograms. In both groups 1,25 dihydroxyvitamin D3 peaked 24 h after injection, as opposed to the controls, which peaked 72 h postpartum. At parturition, the 700-micrograms dose resulted in a slight hypercalcemia; the 350-micrograms dose moderated the hypocalcemia prevalent during this period, whereas in controls hypocalcemia was more pronounced. In cows injected with 700 micrograms, hypercalcemia was observed until the 15th d postpartum. Plasma hydroxyproline was elevated in all cows 48 to 72 h after parturition, but the increase was smaller in animals injected with 1 alpha-hydroxyvitamin D3.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840186 TI - Effects of feeding whole cottonseed to lactating dairy cows on glucose and palmitate metabolism. AB - Eight lactating Holstein dairy cows were fed corn silage-based diets with or without whole cottonseed at 18.5% of the dietary dry matter. At 42 days postpartum, a pulse injection of 100 mg glucose/kg body weight was given intravenously and plasma glucose concentration was monitored for 45 min. At 50 d postpartum, biopsies of adipose tissue and mammary tissue were taken and tissue slices were incubated in vitro with either uniform carbon-14 glucose or 1-carbon 14 palmitate. Basal concentration of plasma glucose was not affected by diet, although apparent distribution volume of glucose did seem to decrease due to feeding whole cottonseed. Feeding whole cottonseed decreased uptake of glucose and palmitate in both adipose tissue and mammary tissue and also decreased oxidation of glucose to carbon dioxide in both tissues. Palmitate oxidation was not affected by diet. Incorporation of carbon-14 from glucose into adipose tissue lipids was decreased in cows fed whole cottonseed. Results indicate that fat supplementation in the form of whole cottonseed may decrease palmitate incorporation and glucose utilization for glycerol and reducing equivalent synthesis in both adipose tissue and mammary tissue of lactating dairy cows. PMID- 3840187 TI - Ogilvie's syndrome associated with herpes zoster infection. AB - Acute colonic pseudo-obstruction that occurs in the setting of an underlying medical condition is known as Ogilvie's syndrome. The etiology of Ogilvie's syndrome is unknown, and associated medical illnesses are varied and often extra abdominal. While herpes zoster infection has been reported to cause constipation and hypomotility, the association with massive colonic distention has not so far been described. We present a patient with Ogilvie's syndrome in the setting of herpes zoster infection. There was no evidence of other active illnesses, and the patient has continued to do well since the resolution of the zoster. We believe that this is the first reported association of Ogilvie's syndrome and herpes zoster infection. PMID- 3840188 TI - Production of monoclonal antibodies against RT2 antigens of the rat and the definition of a new locus, RT9, linked to RT2. AB - Efforts were made to generate hybridomas producing monoclonal antibodies against the RT2a, RT2b and RT3a antigens of the rat. While a number of hybridomas from each of five different fusions was found to produce antibodies against the RT2b antigen, no hybridoma producing antibody to the RT2a antigen could be detected among those generated in six different fusions. No stable hybridoma secreting antibody specific for the RT3a antigen could be established in three different fusions, although one positive culture was detected. In the course of this work, a monoclonal antibody against a new antigenic specificity was detected in one of the two strain combinations in which the anti-RT2b antibodies were raised. The locus controlling this antigen, which was designated RT9, maps 4.9 (2.2-12.6) cM from RT2. PMID- 3840189 TI - Comparative protection efficiency of UVA- and UVB-induced tans against erythema and formation of endonuclease-sensitive sites in DNA by UVB in human skin. AB - UVA- and UVB-induced tans which were visually identical with each other were induced in separate sites on the lower back of 5 normal human volunteers of good tanning ability. Tanning was achieved by 4 exposures to UVA and UVB administered over an 8-day period. One week after the last exposure the protection afforded by the two types of tan against UVB-induced erythema and against UVB-induced DNA damage was measured. Protection against erythema was measured by comparison of the minimal erythema doses of UVB in tanned and untanned skin. Protection against DNA damage was assessed by comparing the numbers of endonuclease-sensitive sites in epidermal DNA extracted from biopsies taken from tanned and untanned sites exposed to the same dose of UVB. The UVB tans conferred significant protection (mean 2.98-fold) against UVB-induced erythema. UVA tans were not associated with significant protection (mean 1.4-fold). In contrast, both UVA- and UVB-induced tans were associated with a similar reduction in yield of endonuclease-sensitive sites in epidermal DNA (in UVA tan to 47% and in UVB tan to 45% of the yield in untanned skin). Protection conferred by the tans against erythema was therefore not paralleled by protection against DNA damage. PMID- 3840190 TI - Detection of multiple serovars of Chlamydia trachomatis in genital infections. AB - Eight genital isolates of Chlamydia trachomatis that each contained two different serovars were identified by typing with serovar-specific monoclonal antibodies. Mixed infections were confirmed by using serovar-specific monoclonal antibodies in an indirect immunofluorescence assay. For some isolates, fluorescein/rhodamine double-label indirect immunofluorescence with mixtures of IgM and IgG monoclonal antibodies to Chlamydia provided direct visual confirmation of mixed infection. Two isolates contained serovars D and F, and two E and F; one isolate contained serovars Ba and E, one D and J, one I' and F, and one E and J. In a sample of 352 genital isolates of C. trachomatis consecutively typed by dot ELISA with monoclonal antibodies, seven (2%) demonstrated mixed serovars. PMID- 3840191 TI - [Plasma levels of thromboxane B2 and 6-keto PGF1 alpha in patients with variant angina]. PMID- 3840192 TI - An animal model of acute otitis media and the histopathological assessment of a cochlear implant in the cat. PMID- 3840193 TI - Transantral orbital decompression in the treatment of Graves' disease. AB - A series of twenty patients operated on for severe endocrine exophthalmos is presented. All the operations were performed by removing the orbital floor, making a total ethmoidectomy and removing part of the inferior orbital margin; in some cases, a section of the lateral orbital wall was also removed. No serious complications were detected. In all but one patient there was an immediate, marked decrease in exophthalmometry. A marked decrease of the inflammatory signs of the conjunctivae was also observed within a week following surgery. PMID- 3840194 TI - Recurrent mammary gland contractions induced by a low tonic release of oxytocin in rats. AB - In urethane-anaesthetized lactating rats, intramammary pressure occasionally displayed recurrent variations or oscillations having a slow rise time, low amplitude, long duration and a periodicity of 1-4 min. These oscillations differed from changes in intramammary pressure characteristic of reflex milk ejections induced by suckling, and were also observed in unsuckled rats. They were suppressed by lesions of the pituitary stalk or by stimulating the septum, a structure that inhibits the activity of the magnocellular system. They could be induced by long-term low frequency stimulation of the pituitary stalk, lesions of the septum or long-term infusions of oxytocin at a low rate of 0.05-0.3 mu./min. We suggest that the recurrent oscillations in intramammary pressure constitute a particular mode of response of the mammary gland to a tonic release of oxytocin resulting from a moderate but sustained increase in the basal level of electrical activity of the oxytocin-secreting neurones. PMID- 3840196 TI - Prolactin in animal experimentation. Report on the workshop conference of the German Society for Clinical Chemistry held on November 8 to 9, 1984 in Rodermark, FRG. AB - Work in recent years has revealed that prolactin can no longer be considered exclusively as a lactation hormone, and must be seen in a much wider physiological perspective. Biochemical and pharmacological studies in animals have made a special contribution, and prolactin is becoming increasingly important in toxicological investigations. The general custom of using rats for such studies has its own inherent problems, involving both the analytical methodology and the special requirements that must be observed in the housing and handling of these experimental animals. The aim of workshop conference was to review these special problems, together with our present knowledge of the mechanisms of prolactin secretion, and to present examples of pharmacological and toxicological studies on prolactin. Dohler (Hannover) spoke on the effect of experimental and pre-experimental conditions on the results of prolactin determination in rats. He described in detail the influence of sex, age and animal strain, and of biological rhythms. Alongside these physiological factors, however, a very great influence is exerted by the conditions of housing, and any external interference leads to often dramatic alterations in prolactin secretion. Wuttke (Gottingen) discussed the mechanisms of prolactin secretion in the rat. Here, dopamine holds a key position. This is also pharmacologically important, because prolactin secretion is stimulated by all dopamine antagonists and inhibited by all dopamine agonists. Vasointestinal polypeptide (VIP) and thyroliberin (TRH) stimulate prolactin secretion directly. The contribution by Nagy (Budapest) dealt with prolactin secretion in lactating rats and its modification by various transmitters.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840195 TI - Thymus-leukemia (TL) antigens of the mouse. Analysis of TL mRNA and TL cDNA TL+ and TL- strains. AB - A thymus-leukemia (TL)-specific probe, pTL1, has been generated from a TL-coding gene of BALB/c mice. Multiple species of TL mRNA were detected in TL+ cells by Northern blot analysis with pTL1, and different Tla haplotypes could be distinguished on the basis of characteristic patterns of TL mRNA. No TL-related message was found in normal or leukemic TL- cells, including thymocytes from Tlab mice. However, TL mRNA could be detected in TL+ leukemias occurring in Tlab mice. A cDNA library has been made from ASL1 (a TL+ leukemia of A mice [Tlaa]), and pTL1+ clones have been sequenced. At least three structurally distinct TL genes are expressed in ASL1. Sequence comparison of TL genes from three Tla haplotypes indicates that TL genes are highly conserved (greater than 90% homology) and are more distantly related to H-2 genes. Several polyadenylation sites have been found in the 3' untranslated region of TL genes, and differential polyadenylation contributes to the size heterogeneity of TL transcripts. The predicted amino acid sequence of TL products indicates that TL and H-2 are similar in domain structure and disulfide bonds, but differ in glycosylation sites and in cytoplasmic domain sequences. PMID- 3840197 TI - Presence of HBV DNA in spermatozoa: a possible vertical transmission of HBV via the germ line. AB - Using molecular hybridization we studied the presence and state of HBV DNA in sperm samples obtained from 17 patients with HBV infection (eight HBsAg chronic carrier, nine acute hepatitis B). Presence of HBV DNA was detected in three samples of seminal fluid from three patients with acute hepatitis. Restriction enzyme patterns of cellular DNA were consistent with presence of integrated HBV DNA sequences in spermatozoa from two of these three patients. The results indicate that HBV DNA may be present in the semen, at least during the acute phase of HBV infection. The presence of HBV DNA in seminal fluid confirms the possibility of venereal transmission. The presence of integrated sequences in spermatozoa suggests the possibility of true vertical transmission of HBV via the germ line. PMID- 3840198 TI - Carotenoids of tunicates. III. The structural elucidation of two new marine carotenoids, amarouciaxanthin A and B. AB - The structure of two new marine carotenoids, isolated from the tunicate, Amaroucium pliciferum, and designated as amarouciaxanthin A and B, were determined on the basis of chemical and spectral data. Amarouciaxanthin A was determined as (6S, 3'S, 5'R,6'R)- 6,3',5'-trihydroxy-4,5,6',7'-tetradehydro 7,8,5',6'-tetrahydro-beta, beta-carotene-3,8-dione, and Amarouciaxanthin B was determined as (6S,3'R)-6,3'-dihydroxy-4,5,7',8'-tetradehydro-7,8-dihydro beta,beta- carotene-3,8-dione. These two compounds are also presumed to be new metabolic products of a typical marine carotenoid, fucoxanthin. PMID- 3840199 TI - Desacetyluvaricin from Uvaria accuminata, configuration of uvaricin at C-36. PMID- 3840200 TI - Improvements in data collection through physician use of a computer-based chemotherapy treatment consultant. AB - The impact of a computer-based data management system on the completeness of clinical trial data was studied before and after the system's introduction in an oncology clinic. Physicians use the system, termed ONCOCIN, to record data during patient visits and to receive advice about treatment and tests required by experimental cancer protocols. Although ONCOCIN does not force the user to enter all data expected by the protocol, after its introduction there was improvement in the recording frequency of such data. The percentage of expected physical findings recorded increased from 74% to 91% (P less than .05), toxicity history from less than 1% to 45% (P less than .01), general chemistry results from 36% to 82% (P less than .01), x-ray results from 44% to 73% (P less than .01), and physicians' assessments of overall disease activity and Karnofsky performance status from 73% to 91% (P less than .05). Analysis of the steps in data collection and their contribution to loss of data suggests that observations or test ordering which are dependent on the physician are most improved by the system. Furthermore, analysis of post-ONCOCIN visits when the system was unavailable suggests that the recording of physician-dependent data (physical findings and assessments of disease activity and performance status) is likely to revert to pre-ONCOCIN levels if the system is not used routinely. The results show that ONCOCIN can greatly enhance recovery of those data expected for chemotherapy protocol patients. The program's interaction with the physician is central to its effectiveness in data collection, especially for data that arise directly from the patient-physician encounter. PMID- 3840201 TI - A double-labeling investigation of the afferent connectivity to cortical areas V1 and V2 of the macaque monkey. AB - The afferent connectivity of areas V1 and V2 was investigated using the fluorescent dyes fast blue and diamidino yellow. Simultaneous injection of each dye in retinotopically corresponding regions of these areas gave rise to two afferent populations of labeled neurons in subcortical and cortical structures which project to both areas. These two populations showed a variable degree of overlap in their spatial distribution. Neurons labeled by both dyes (double labeled neurons) which, therefore, project to both areas, were found in substantial numbers in these overlap zones. When the injections were made in non retinotopically corresponding regions in the two areas, both populations of labeled cells overlapped extensively in the cortex but not in subcortical structures, suggesting that the laws governing the topography of these two types of connections are different. In the cortex, the labeled neurons extended from the fundus of the lunate sulcus to the fundus of the superior temporal sulcus. A few labeled neurons were also found in the inferior temporal cortex and the parahippocampal gyrus. In all cortical regions, corticocortical neurons projecting to V1 and V2 were found in both supra- and infragranular layers, although double-labeled neurons were more numerous in infragranular layers. With increasing distance from V1 there was an increase in the proportion of neurons labeled in infragranular layers. The comparative strength of input to V1 and V2 was computed and was found to be higher to V2 in all cortical regions except the superior temporal sulcus which projected equally heavily to both areas. The superior temporal sulcus also stood out in that of all cortical regions it contained the highest proportion of double-labeled neurons. Single- and double labeled neurons were found in a number of subcortical structures including the lateral geniculate nucleus, the inferior and lateral pulvinar, the intralaminar nuclei, the nucleus basalis of Meynert, and the amygdala. The pattern of labeling in the lateral pulvinar was in agreement with the suggestion that this structure has a complex topographical organization containing at least a dual representation of the visual field (Bender, D. B. (1981) J. Neurophysiol. 46: 672 693). In the pulvinar complex, densities of labeled neurons permitted evaluation of the strength of input to V1 and V2, the latter being the strongest. These results demonstrate that areas V1 and V2 share a vast amount of common input from the same cortical and subcortical structures and that a number of neurons project to both areas via branching axons. PMID- 3840202 TI - On the presence in the cerebral cortex of muscarinic receptor subtypes which differ in neuronal localization, function and pharmacological properties. AB - The existence in rat frontal cerebral cortex of subtypes of muscarinic receptors was investigated by using as a receptor-mediated functional response the release of neurotransmitters from isolated nerve endings. Synaptosomes prelabeled with [3H]choline or [3H]dopamine were depolarized with 15 mM KCl. Acetylcholine (ACh) concentration-dependently decreased the release of [3H]ACh and increased that of [3H]dopamine. Both actions of ACh were counteracted by the classical muscarinic antagonists atropine and quinuclidinyl benzylate. The two antagonists did not discriminate between the muscarinic presynaptic receptors sited on cholinergic terminals (muscarinic autoreceptors) and those located on dopamine nerve endings (muscarinic heteroreceptors). The apparent affinity (pA2) values for the two receptors were: 8.41 and 8.57 with atropine and 8.55 and 8.34 with quinuclidinyl benzylate. However, other muscarinic antagonists behaved differently. Dicyclomine strongly antagonized ACh at the heteroreceptors (pA2 = 8.69), whereas it was ineffective at the autoreceptors when tested at 5 microM. Pirenzepine had a similar behavior, although its affinity at the heteroreceptors was lower (pA2 = 6.33). In contrast, secoverine antagonized ACh at the autoreceptors with an affinity (pA2 = 7.58) higher than that showed at the heteroreceptors (pA2 = 6.51). The data support the existence in the frontal cortex of muscarinic receptors that are located on different neurons, mediate different functional responses and are pharmacologically distinguishable. PMID- 3840203 TI - Sex difference in adrenal heme and cytochrome P-450 metabolism: evidence for the repressive regulatory role of testosterone. AB - A novel aspect of the regulation of heme biosynthesis and cytochrome P-450 concentration in rat adrenals, as pertains to the repressive role of testosterone, is described. Also, the presence of a sex difference in the activities of delta-aminolevulinate (ALA) synthetase and heme oxygenase, as well as the concentrations of heme and cytochrome P-450 in the adrenal mitochondrial and the microsomal fractions, are defined. The female rats displayed a nearly 2 fold higher value for the listed parameters. Castration of rats caused an elevation of ALA synthetase activity to approximate that of the female rats, whereas testosterone replacement depressed the enzyme activity to the level of the sham-operated animals. Moreover, female rats treated with testosterone showed a marked depression in adrenal ALA synthetase activity. This was accompanied by significant reductions in the mitochondrial and microsomal contents of cytochrome P-450 and heme. Heme oxygenase activity was neither altered by castration nor by the testosterone treatment of castrated and female rats. It is suggested that the adrenal ALA synthetase activity is regulated by plasma testosterone levels which, in turn, regulates the production of heme and the cellular levels of heme and cytochrome P-450. The mode of action of testosterone appears to be repressive in nature. PMID- 3840204 TI - Some factors influencing the interaction of ram spermatozoa with zona-free hamster eggs. AB - Variability in the interaction of ram spermatozoa with zona-free hamster eggs was recorded not only amongst individual males but also between the first and second ejaculates of the same male collected 30 min apart. Fusion ability also differed according to the conditions of gamete mixing. This ability decreased after in vitro storage of undiluted ejaculates at room temperature but lasted for 48-192 h. The kinetics of sperm-egg fusion during the time of gamete incubation varied not only with the time of sperm storage in vitro but also with the ejaculate. When the semen was frozen, the ability of the spermatozoa to fuse was markedly reduced. PMID- 3840205 TI - Ovarian diapause in Culex peus (Diptera: Culicidae). PMID- 3840206 TI - Computer control of an Imed 929 infusion pump. AB - There is a growing interest in the potential benefits to be obtained from closed loop control of drug infusion [1-5]. The most widely available infusion pump which is specifically designed for control by computer is the 929 volumetric infusion pump produced by Imed. The increasing availability of microcomputers suggests that they will be used more frequently to control such pumps. However, difficulties can arise when the attempt is made to establish communication between the computer and the pump [6] and a method employed for this purpose is described in this article. The aim was to provide a simple method of conducting the required communication between the computer and the pump using a high-level language. The commands specified in the high-level language are passed to a machine-code subroutine which organizes transmission to and receives data from the pump. PMID- 3840207 TI - Surface markers of peripheral blood lymphocytes in Vogt-Koyanagi-Harada disease. AB - The cell membrane markers on peripheral blood lymphocytes of 10 patients with Vogt-Koyanagi-Harada disease (VKH) were analyzed by laser flow cytometry using monoclonal antibodies. Seven patients with active uveitis and 98 normal control subjects were also studied. The percentage of OKT3+, OKT4+ and OKT11+ cells were significantly lower while OKIa1+ cell were higher in VKH compared to controls. The percentage of cells reacting with monoclonal antibodies were slightly affected during steroid therapy, but returned to the pretreatment level after cessation of the therapy. OKIa1+ cells were shown to be increased in active uveitis while percentages of cells with other cell markers remained unchanged when the results were compared with that of the control. The findings suggest that the analysis of cell membrane markers on lymphocytes in VKH could be a significant parameter in clinical medicine. PMID- 3840208 TI - Selective transport of Li+ across lipid bilayer membranes mediated by an ionophore of novel design (ETH1644). AB - The neutral noncyclic, lithium-selective ionophore ETH1644, which is structurally different from previously available ionophores of this type, is a selective carrier of Li+ in lipid bilayer membranes of various lipid composition. The ionophore forms a 2:1 carrier/cation complex, and the rate-limiting step in the overall transport process is the diffusion of the carrier/ion complex across the membrane. The selectivity sequence for lithium vs. other ions normally found in biological systems is: Li+ (1) greater than Na+ (0.017) greater than or equal to K+ (0.017) greater than Cl- (0.001), Ca2+ and Mg2+ are impermeant. At neutral pH protons do not interfere with the Li+-carrying ability of this ionophore. On the basis of structural differences and supported by conductance data, it is argued that the improved selectivity of Li+ over the other alkali cations is due more to a decrease in the affinities of the ionophore for the latter cations that to an increase of its affinity to Li+. This ionophore can also act as a carrier of biogenic amines (catecholes, indoles and derivatives), with the structure of the permeant species and mechanism of permeation similar to that observed with the alkali cations. The selectivity sequence is: tryptamine (18.1) greater than phenylethylamine (11.6) greater than tyramine (2.4) greater than Li+ (1) greater than serotonin (0.34) greater than epinephrine (0.09) greater than dopamine (0.05) greater than norepinephrine (0.02), showing the ionophore to be more selective to Li+ than to any of the neurotransmitters studied. PMID- 3840209 TI - Elution of benzo[a]pyrene from carbon blacks into biomembranes in vitro. AB - Elution of benzo[a]pyrene (BaP) from carbon blacks into phospholipid vesicles composed of dimyristoyl phosphatidylcholine (DMPC) or dipalmitoyl phosphatidylcholine (DPPC) was investigated. Samples of rubber-grade carbon blacks designated N-234, N-339, N-351, and N-375 containing exogenously adsorbed BaP were prepared by solvent extracting endogenous compounds from the carbon blacks and then readsorbing BaP at the desired concentrations. Concentrations of exogenous BaP on the carbon blacks were approximately 100-fold higher than normally occur on commercial carbon blacks, but the higher levels were used to improve the ability to detect elution of BaP into membranes. Elution of BaP from carbon blacks was studied using a fluorescence spectroscopic technique that allowed continuous monitoring of the elution process. Elution from N-234 was below detection limits of our system. Elution of BaP from N-339, N-351, and N-375 into DMPC and DPPC vesicles occurred in a biphasic manner. Elution occurred within 60 min of mixing carbon blacks with vesicles, although not all BaP was eluted from the particles. When the concentration of BaP adsorbed to N-375 was reduced, the rate and extent of elution were lowered. Extent of elution of of BaP in these experiments may be greater than that of endogenous BaP on commercial carbon blacks because of the considerably higher quantities of exogenous BaP present. Furthermore, solvent extraction of endogenous materials prior to readsorption of BaP may alter the adsorption characteristics. However, methods developed in these experiments will facilitate future studies of the bioavailability of endogenous BaP on carbon blacks, especially in terms of determining the experimental conditions under which elution may occur. PMID- 3840210 TI - Consensus panel addresses obesity question. PMID- 3840211 TI - Leads from the MMWR. Heterosexual transmission of human T-lymphotropic virus type III/lymphadenopathy-associated virus. PMID- 3840212 TI - A new strategy to prevent the spread of AIDS among heterosexuals. PMID- 3840213 TI - [Immunological studies on the antigenicity of the cephem antibiotic T-2588]. AB - The antigenicity or immunological characteristics of T-2588, newly-developed ester type cephem antibiotic, was studied employing rabbits, guinea pigs and mice. The results obtained were as follows: Antibody production against T-2588 was not observed in rabbit immunized with the emulsion of T-2588 and Freund's complete adjuvant (FCA). Hapten-specific antibody production against T-2525 was demonstrated by indirect hemagglutination test and 4 hrs. PCA of guinea pigs, employing rabbit antiserum hyperimmunized with the emulsion of T-2525 coupled to rabbit serum albumin and FCA. Hapten-specific antibody production against T-2525 was demonstrated by 48 hrs. PCA of rats, employing mice immunized with the mixture of T-2525 coupled to keyhole limpet hemocyanin and aluminium hydroxide gel. Cross antigenicity of T-2525 was observed to be relatively strong against cefotaxime and ceftizoxime, and very weak against cephalothin (CET), cefazolin, cefoperazone (CPZ), cefmenoxime, cefotiam and benzylpenicillin (PCG). Anaphylactic syndrome was not observed in guinea pigs actively sensitized with the emulsion of T-2588 or T-2525 and FCA. The ability of T-2588 and T-2525 to give a positive reaction in Coombs' test was rather weaker than that of CET, CPZ and PCG. PMID- 3840214 TI - [Reduced central nervous system leukemia by prophylaxis with intermittent intrathecal methotrexate and prednisolone in adults with acute leukemia]. PMID- 3840216 TI - [Endocrine ophthalmopathy]. AB - The author lists the various ocular complications of Graves' disease, ranging from the very mild, which need no treatment, to those which require medical treatment, usually with cortisone, sometimes in combination with immunosuppressors. The relatively slight oculomotor problems can sometimes be alleviated with prisms. More serious complications require surgery of the extraocular muscles, which is not discussed in this paper. PMID- 3840215 TI - [Arterial hypertension in chronic bronchial obstruction and various problems of its treatment]. AB - A total of 127 patients with bronchial asthma of infectious-allergic genesis and chronic obstructive bronchitis were examined for the central and regional hemodynamics as well as for the blood levels of serotonin and monoamine oxidase. The combination of chronic bronchial obstruction with stable "pulmogenic" arterial hypertension was associated with a significantly decreased cardiac index, a reduction in the pulse blood filling of the brain as well as an increase in the peripheral vascular resistance, the pressure in the pulmonary artery, serotonin levels and monoamine oxidase activity. A multiple modality therapy (hydralazin, talinolol, hydrochlorothiazide) elicited an improvement of the hemodynamic and normalization of the biochemical parameters. PMID- 3840217 TI - Diagnostic exercise: distended abdomens in rats. PMID- 3840218 TI - The side-chain cleavage of cholesterol sulfate--II. The effect of phospholipids on the oxidation of the sterol sulfate by inner mitochondrial membranes and by a reconstituted cholesterol desmolase system. AB - This study compares the side-chain cleavage of aqueous suspensions of cholesterol sulfate with the side-chain cleavage of cholesterol sulfate which is incorporated into phospholipid vesicles. Three different cholesterol desmolase systems are examined: the membrane-bound cholesterol side-chain cleavage system present in inner mitochondrial membranes isolated from bovine adrenal mitochondria; a soluble, lipid-depleted, reconstituted side-chain cleavage system prepared from cytochrome P-450scc, adrenodoxin and adrenodoxin reductase; a membrane associated side-chain cleavage system prepared by adding phospholipid vesicles, prepared from adrenal mitochondrial, to the reconstituted system. Soluble cholesterol sulfate, in low concentration, is a good substrate for the lipid-depleted reconstituted side chain cleavage system. However, at concentrations above 2 microM, in the absence of phospholipids, the sterol sulfate appears to bind at a non-productive site on cytochrome P-450scc which leads to substrate inhibition. Phospholipids, while inhibiting the binding of cholesterol sulfate to the cytochrome, also appear to prevent non-productive binding of the sterol sulfate to the cytochrome. Thus the addition of phospholipids to the lipid-depleted enzyme system leads to an activation of side-chain cleavage of high concentrations of the sterol sulfate. Soluble cholesterol sulfate is a good substrate for both the native and reconstituted membrane-bound systems and no substrate inhibition is observed when the membrane bound enzyme systems are employed in the assay of side-chain activity. However, the cleavage of cholesterol sulfate, which is incorporated into phospholipid vesicles, by both membrane bound enzyme systems appears to be competitively inhibited by the phospholipids of the vesicles. The results of this study suggest that the regulation of the side-chain cleavage of cholesterol sulfate may be entirely different than the regulation of the side-chain cleavage of cholesterol, if cholesterol sulfate exists intracellularly as a soluble non-complexed substrate. If, on the other hand, cholesterol sulfate is present in the cell in lipid droplets as a complex with phospholipids, its metabolism may be under the same constraints as the side-chain cleavage of cholesterol. PMID- 3840219 TI - Use of keyed character string data structures and operators in models of primate groups. AB - Many primate populations exhibit forms of organization that are both complex and highly dynamic. A prototype of a general purpose primate population computer modelling system has been developed; this modelling system provides data structures and operators that facilitate computer representation of many static and dynamic features of primate population organization. In this system, primate group structures are represented by text strings known as key strings. A key string begins with a label or key character that identifies its population element type. The label character is followed by data fields contained between bounds marker characters. Nested key strings can be used to concisely represent many of the structural features of social groups in different primate species. Changes in group structures are accomplished by key string insertion, deletion and move operations. Models of structures and processes in island, rhesus monkey and hamadryas baboon populations built with this prototype modelling system are discussed. In these pilot applications, use of key string data structures and operators greatly simplifies many aspects of model construction. PMID- 3840220 TI - Algebraic expressions for the waveforms of sea urchin sperm flagella. AB - The waveforms of live sea urchin sperm flagella were digitized with video digitizing apparatus. The flagellar waveforms were expressed by the coordinates of 20 points spaced 2 micron apart along the flagella. The waveforms were condensed into simple algebraic expression with four parameters. Each of these parameters showed a systematic variation with the flagellar frequency. These average trends of the parameters made it possible to define an average, idealized, waveshape as a function of the flagella frequency, in the range 8-80 Hz. PMID- 3840221 TI - Peripheral blood leukocyte alterations in mice induced by a hemoregulatory pentapeptide (HP 5b). AB - The effects of different doses of a synthetic hemoregulatory pentapeptide, analoguous to an inhibitory factor associated with human granulocytes, on the numbers of peripheral blood leukocytes have been investigated in female C3H mice. Following single injections as well as continuous infusion for 6 days, the numbers of granulocytes in peripheral blood were reduced to about one half of the normal. Maximal effect with single injection was seen with 120 micrograms (10(-5) M), while 1.2 mg (10(-4) M) as one dose only had a slight, temporary effect on the granulocyte numbers in peripheral blood. Upon continuous infusion of 14 micrograms/h (less than 10(-5) M) for 19 days, a stimulation with doubling of the granulocyte numbers was seen instead. The substance also decreased the monocyte numbers in peripheral blood. With prolonged exposure, a relative monocytosis was seen instead. After both single injection and continuous infusion, the pentapeptide increased the lymphocyte numbers in peripheral blood. The thrombocyte numbers were not altered. The decreased granulocyte numbers seemed to be due to a dual mechanism, one reducing proliferation in the maturing compartment which gives a rapid cell reduction, and one mediated through inhibition of the committed stem cells for myelopoiesis, giving a long-lasting reduction in the granulocyte numbers. It is postulated that the pentapeptide has a complex regulatory effect in vivo. PMID- 3840222 TI - Online patient-monitoring system for the simultaneous analysis of blood K+, Ca2+, Na+ and pH using a quadruple-function ChemFET integrated-circuit sensor. PMID- 3840223 TI - Free and conjugated catecholamines in digestive tissues of rats. AB - Using a radioenzymatic technique, the highest concentrations of free catecholamines were found in the duodenum, and the lowest in the liver of untreated rats. When compared to the antrum, the concentration of free dopamine was higher, and that of norepinephrine lower in the fundus. As far as conjugated catecholamines are concerned, the tissue concentrations of both sulfo- and glucurono-conjugates were usually low, and often non detectable, with an exception: the concentration of glucurono-conjugated dopamine was very high in the duodenum, ileum, and liver of untreated rats. PMID- 3840224 TI - High dose epidural morphine for surgical analgesia. AB - A group of 30 patients undergoing various operative procedures were anesthetized using high dose epidural morphine 20 mg in 15 ml of normal saline, thiopentone induction, endotracheal intubation and muscle relaxation with pancuronium 0.1 mg/kg and controlled ventilation with oxygen and nitrous oxide. Operative conditions and patient acceptance of the technique were satisfactory. There was cardiovascular stability and prolonged postoperative analgesia. Pruritus was observed in three patients and urinary retention in one and were adequately treated. Early mild respiratory depression occurred in one patient and this was treated with naloxone. High dose epidural morphine is efficacious and safe in providing intraoperative and postoperative analgesia. PMID- 3840225 TI - Isodose plotting for pen plotters. AB - A general algorithm for treatment plan isodose line plotting is described which is particularly useful for pen plotters. Unlike other methods of plotting isodose lines, this algorithm is designed specifically to reduce pen motion, thereby reducing plotting time and wear on the transport mechanism. Points with the desired dose value are extracted from the dose matrix and stored, sorted into continuous contours, and then plotted. This algorithm has been implemented on DEC PDP-11/60 and VAX-11/780 computers for use with two models of Houston Instrument pen plotters, two models of Tektronix vector graphics terminals, a DEC VT125 raster graphics terminal, and a DEC VS11 color raster graphics terminal. Its execution time is similar to simpler direct-plotting methods. PMID- 3840226 TI - [Ogilvie's syndrome--a case report and review]. AB - Ogilvie's syndrome is caused from functional obstruction of the colon without mechanical stenosis and also termed as pseudo-obstruction of the colon. This disease is seen in patient who has other causative distress. The pathogenesis of this rare entity is unknown but it is suspected that there may be an underlying autonomic disturbance which causes non-mechanical obstruction of the colon. Most of the case reports on Ogilvie's syndrome have appeared in European and North American journals but are extremely rare in Japan. Some cases which have been categorized "spastic ileus" may be included in this syndrome. We recently experienced a patient with cerebral infarction who developed non-mechanical obstruction of the colon. This patient was treated successfully with an exploratory laparotomy and sigmoidostomy. It is considered that early diagnosis is an essential part of the initial management of this syndrome. Conservative treatment is indicated for most of the patients but a definitive surgical therapy is occasionally necessary. PMID- 3840227 TI - [Pathophysiology and clinical aspects of calcium phosphate metabolic disorders in children]. PMID- 3840228 TI - Substrate-product relation of 1-hydroxylase activity in primary hyperparathyroidism. AB - The synthesis of the active form of vitamin D, 1,25-dihydroxyvitamin D (1,25 (OH)2D), is thought to be relatively insensitive to the serum concentration of its precursor, 25-hydroxyvitamin D (25-OH-D). We compared the effect of oral administration of 25-OH-D3 (50 micrograms per day for one month) on serum concentrations of calcium, phosphate, parathyroid hormone, 25-OH-D, and 1,25 (OH)2D in five healthy adults and in six patients with primary hyperparathyroidism. In normal adults the mean (+/- S.D.) serum level of 25-OH-D rose from 18 +/- 9 to 136 +/- 47 ng per milliliter; no significant changes were observed in the other serum levels. In contrast, comparable increases in the levels of circulating 25-OH-D in patients with primary hyperparathyroidism caused a consistent slight rise in serum calcium and phosphate levels, a partial suppression of parathyroid hormone, and a sharp increase in the level of 1,25 (OH)2D. During this period a significant positive correlation was found between serum concentrations of 25-OH-D and 1,25-(OH)2D (P less than 0.001). These results provide evidence that in patients with primary hyperparathyroidism, levels of circulating 1,25-(OH)2D may be more dependent on the prevailing serum concentrations of 25-OH-D than they are in normal adults. PMID- 3840229 TI - Deoxynivalenol and 15-monoacetyl deoxynivalenol production by Fusarium graminearum R6576 in liquid media. AB - Growth and toxigenesis by Fusarium graminearum R6576, were compared in four liquid media. Parameters monitored during the fermentation were deoxynivalenol (DON) and 15-acetyl deoxynivalenol (15-ADON) production, fungal mass, carbohydrate utilization, and pH. Factors which were varied included basal medium composition, corn steep liquor (CSL) concentration, sucrose concentration and ammonium tartrate concentration. Growth in modified Fries medium resulted in only low levels of DON (0.25 mg/L) and 15-ADON (0.25 mg/L) after 20 days. Addition of 4% CSL to modified Fries medium raised the 20 day DON yield to 16.5 mg/l. Increasing the sucrose concentration in modified Fries medium amended with 4% CSL resulted in increased mycelial dry weight but decreased levels of DON. Concentrations of ammonium tartrate greater than 1% in modified Fries amended with 4% CSL greatly reduced DON yield. Use of glucose-yeast extract-peptone (GYEP) for toxin production resulted in higher yields of 15-ADON (14.0 mg/L) than DON (5.5 mg/L) after 20 days. However, supplementation of GYEP with 4% CSL resulted primarily in DON production (4.5 mg/L) after 20 days. In general, qualitative and quantitative production of DON and 15-ADON by Fusarium graminearum R6576 were dependent on the composition of the complex liquid medium. PMID- 3840230 TI - Sequence of protein disulphide isomerase and implications of its relationship to thioredoxin. AB - The formation of disulphide bonds is essential to the structure and function of proteins. These bonds rapidly form either cotranslationally or immediately post translationally in the lumen of the endoplasmic reticulum. Native disulphide pairing for such proteins has been achieved in vitro; however, the rates of reassembly are slow and the conditions non-physiological. To account for these observations, Anfinsen et al. proposed that a 'disulphide interchange protein' was the in vivo catalyst of disulphide bond rearrangement. Other groups discovered an activity with similar characteristics that catalysed the reductive cleavage of insulin and may be associated with insulin degradation, although this result has been disputed. The enzyme involved, protein disulphide isomerase (PDI; EC 5.3.4.1), may be the in vivo catalyst of disulphide bond formation. Here we describe the sequence of cloned rat liver PDI complementary DNA which predicts a protein with two distinct regions homologous with Escherichia coli thioredoxin, a known cofactor in oxidation-reduction reactions. Each of these regions contains the presumed active site sequence Trp-Cys-Gly-His-Cys-Lys, suggesting that PDI, similar in action to thioredoxin, catalyses disulphide bond interchange via an internal disulphide-sulphydryl interchange. The cDNA predicts a signal peptide consistent with the view that PDI is a luminal endoplasmic reticulum protein. PDI messenger RNA, although ubiquitous, is more highly concentrated in secretory cells. PMID- 3840231 TI - Site-directed mutagenesis shows that tyrosine 248 of carboxypeptidase A does not play a crucial role in catalysis. AB - The residue Tyr 248 of carboxypeptidase A (CPA) is thought to play a role in catalysis by contributing a proton to the incipient amine anion generated during cleavage of peptide substrates. To test this hypothesis we have modified the rat CPA cDNA by site-directed mutagenesis so that the codon for Tyr 248 is replaced by that for Phe. Here, we report the expression of the cDNAs for proCPA and its Tyr-to-Phe variant in yeast via the alpha-factor system. Following zymogen activation by trypsin, wild-type CPA (CPA-WT) and variant CPA (CPA-Phe 248) were purified to homogeneity and characterized enzymatically. CPA-Phe 248 displays essentially undiminished values for the catalytic constant (kcat) towards various peptide and ester substrates. However, the Michaelis constants (Km values) of peptide substrates and the inhibition constant (Ki) of the potato carboxypeptidase inhibitor are increased 6-fold and 70-fold, respectively. These data suggest that the phenolic hydroxyl of Tyr 248 does not act as the requisite general acid catalyst but participates in ligand binding. PMID- 3840232 TI - [The occurrence of sexually transmitted diseases in northern Zuid-Holland; epidemiological information for the organization of their prevention]. PMID- 3840233 TI - [Automation in the occupational health services]. PMID- 3840234 TI - [Pineal choriocarcinoma presenting massive ventricular hemorrhage--a case report]. AB - A case of primary choriocarcinoma in the pineal region is reported. A six-year old boy showing precocious puberty, suddenly developed coma by massive ventricular hemorrhage. He recovered gradually up to akinetic mutism, but whose clinical, hormonal and neuroradiological studies failed to demonstrate any pathological lesions. Four years later a small tumor was detected by CT in the pineal region. At the same time increased serum-HCG level was shown. Subtotal removal of the tumor was carried out by Stein's supracerebellar infratentorial approach. The pathology of the tumor showed the characteristics of choriocarcinoma, consisting of major necrotic area and of tumor cells, syncytiotrophoblast and cellular trophoblast. The former revealed strong activity of HCG by immunoperoxidase study. Postoperative chemotherapy with actinomycin-D and methotrexate was given for a month. In the course of these treatments, serum HCG recovered within normal range. This patient shows no signs and symptoms of the recurrence 6 months after operation. Early diagnosis with aids of neuroradiology as well as hormonal studies and the early initiation of the treatment may prevent major complications like massive tumoral bleeding, also might achieve the favorable outcome of this tumor. PMID- 3840235 TI - Effect of short and long photoperiods on pineal N-acetyltransferase rhythm and on growth of testes and brown adipose tissue in developing rats. AB - The effect of photoperiod on the rhythm in pineal N-acetyltransferase activity and on the growth of testes and of brown adipose tissue was studied in infant rats at the age of 5-15 days. After exposure to light at night, high N acetyltransferase activity declined in 6-, 7-, and 8-day-old intact rats, but not in 5-day-old intact rats or in 8-day-old blinded rats. Hence, light might penetrate under closed eyelids and might be perceived by retinal photoreceptors in rats older than 6 days. In 15-day-old animals, the amplitude of the N acetyltransferase rhythm was ten times higher than in 5-day-old rats. The pattern of the N-acetyltransferase rhythm, namely the duration of elevated nocturnal activity, was different under long and short photoperiod at least 1 week before opening of eyes. Photoperiod affected the growth of testes and of interscapular brown adipose tissue already in the preweaning period. In 15-day-old rats, immediately after opening of eyes, the weight of testes was significantly higher and the weight of brown fat lower under long than under short photoperiod. Photoperiodic regulation thus occurs before rats open their eyelids. PMID- 3840236 TI - Somatosensory systems and the milk-ejection reflex in the rat. I. Lesions of the mesencephalic lateral tegmentum disrupt the reflex and damage mesencephalic somatosensory connections. AB - Bilateral electrolytic lesions and unilateral tracer injections were performed in lactating rats in order to study the participation of the mesencephalic lateral tegmentum in the milk-ejection reflex. The release of oxytocin was detected as a rise in intramammary pressure during each milk ejection. In animals with lesions, the lateral part of the deep grey layers of the superior colliculus, the intercollicular area and the rostromedial portion of the external nucleus of the inferior colliculus were destroyed. The mesencephalic lateral tegmentum of animals in which the milk-ejection reflex was blocked sustained a larger damage than in rats where the frequency of the milk-ejection response was only slowed down. Solutions of True Blue, horseradish peroxidase or horseradish peroxidase coupled to wheat germ agglutinin were injected in the mesencephalic lateral tegmentum of rats with and without lesions. Retrogradely labelled cells were found in several nuclei of the somatosensory pathways: the principal sensory and spinal parts of the trigeminal complex, the cuneate and gracile nuclei, the lateral cervical nucleus and the nucleus proprius of the spinal cord. Labelled cells were also found in the ventral nucleus of the lateral lemniscus, the ventral parabrachial nucleus, the gigantocellular reticular nucleus, the lateral nucleus of the substantia nigra, the prerubral nucleus of the thalamus, the hypothalamic ventromedial nucleus, the zona incerta and in the anterior and lateral hypothalamic areas. Labelled fibres and "terminal-like" labelling were found in the anterior pretectal area, in the thalamic parafascicular nucleus, in the posterior nucleus and the ventroposterior complex, in the zona incerta and in the fields of Forel, but none were observed in the supraoptic or paraventricular nuclei. Injections made in the area of the lateral cervical nucleus and in the cuneate and gracile nuclei labelled fibres and "terminal-like" fields in the external nucleus of the inferior colliculus, the intercollicular area, the deep grey layers of the superior colliculus and in the mesencephalic lateral tegmentum. After injections in the posterior nucleus and ventroposterior complex of the thalamus, retrogradely labelled cells were found in the lateral tegmentum, the intercollicular area and the external nucleus of the inferior colliculus. These results indicate that bilateral lesioning of the mesencephalic lateral tegmentum, which disrupts the milk-ejection response, could damage somatosensory projections originating from the dorsal horn of the spinal cord, the lateral cervical nucleus, the dorsal column nuclei and the sensory and spinal trigeminal nuclei.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3840238 TI - Non-menstruation associated toxic shock syndrome. PMID- 3840237 TI - Somatosensory systems and the milk-ejection reflex in the rat. II. The effects of lesions in the ventroposterior thalamic complex, dorsal columns and lateral cervical nucleus-dorsolateral funiculus. AB - Bilateral electrolytic lesions of some somatosensory structures in the thalamus and spinal cord were made in order to assess their participation in the afferent limb of the milk-ejection reflex in the rat. Lesions involving the lateral cervical nucleus and a part of the dorsolateral funiculus region blocked the milk ejection reflex, whereas animals with lesions in the dorsal column of the spinal cord or in the ventroposterior complex of the thalamus displayed milk-ejection reflexes similar to those of control animals. Unilateral injections of horseradish peroxidase coupled to wheat germ agglutinin were made after lesioning the lateral cervical nucleus and part of the dorsolateral funiculus. Anterograde labelling was seen mainly contralateral to the injection site: in the external nucleus of the inferior colliculus, the intercollicular zone, the brachium of the inferior colliculus, the lateral reticular nucleus of the thalamus and in the thalamic ventroposterior complex. Sparse projections ipsilateral to the injection site were also observed. These results, combined with our previous observations, suggest that the projection of the lateral cervical nucleus on the mesencephalon is part of the pathway which conveys the sensory information from the suckling stimulus. PMID- 3840239 TI - Reduced sleep in cats after intraperitoneal injection of delta-sleep-inducing peptide (DSIP). AB - The effect of intraperitoneally injected delta-sleep-inducing peptide (DSIP) on sleep-wakefulness in cats was studied using EEG, EMG and EOG recording for 10 h following 30 nmol/kg DSIP or control saline i.p. injections. DSIP reduced the amount of sleep, specifically light slow-wave sleep and REM sleep, and REM sleep latency was increased. The results suggest that in cats with redundancy sleep DSIP increases wakefulness at the cost of light slow-wave sleep, and in addition it has a specific REM-reducing effect. PMID- 3840240 TI - Intrinsic gamma-aminobutyric acid neurons in the nucleus of the solitary tract and the rostral ventrolateral medulla of the rat: an immunocytochemical and biochemical study. AB - Sympathoexcitatory neurons in the C1 adrenergic area of the rostral ventrolateral medulla (RVL) are tonically inhibited by gamma-aminobutyric acid (GABA). To identify the source of this GABAergic input, the distribution of neurons containing glutamate decarboxylase (GAD) was determined immunocytochemically in rats treated with colchicine. Numerous GAD-stained neurons were located in the nucleus of the solitary tract (NTS) and in RVL. Unilateral lesions in NTS did not alter GABA content or GAD activity in RVL, indicating that the afferent projection from NTS to RVL is not GABAergic. Intrinsic GABAergic neurons in RVL may provide tonic inhibition of vasomotor neurons in the C1 area. PMID- 3840241 TI - Propriospinal fibers reaching the lumbar enlargement in the rat. AB - Propriospinal fibers reaching the lumbar enlargement were investigated in rat by means of retrograde transport of wheat germ agglutinin-horseradish peroxidase conjugate coupled or not coupled with gold particles. Unilateral or medial bilateral injections were done. Identification of projection cells was done by tetramethylbenzidine histochemistry or gold-silver intensification procedures. Unilateral injections resulted in bilateral labeling, with patterns and density related to the spinal segments of origin. Sacral, lumbar and thoracic afferents showed identical patterns. Ipsilateral connections originated laterally from dorsal, intermediate and ventral horns. Contralateral connections originated medially from laminae VII and VIII and laterally from the reticular extension of the neck of the dorsal horn. Cervical afferents were symmetrical, arising from both lamina VIII and the reticular extension of the neck of the dorsal horn. Lamina X projection cells were seen at all levels when injection sites involved this area. Laminae III and IV were almost totally devoid of projection cells. Superficial layer cells (laminae I and II) showed some labeling when injections were situated dorsally. The organization of these tracts in rat is similar to that in cat and monkey. Their origin is discussed in relation to those of long ascending pathways reaching supraspinal levels. PMID- 3840242 TI - Heart ailments and workplace stress mistakenly called occupational diseases. PMID- 3840244 TI - An international classification of retinopathy of prematurity. Clinical experience. AB - A central problem in medicine is the development of classification systems of disease adequate to describe the many manifestations by which a disease may present to the clinician. Such is the problem presented by retinopathy of prematurity (ROP). A group of 23 ophthalmologists, representing 11 countries, met over a period of two years to develop a new classification. This paper presents the classification (previously published) and the author's experience with its use in classifying the disease in 121 infants of birthweight less than or equal to 1300 grams over a 15-month period. PMID- 3840243 TI - Computed tomography of the nonrhegmatogenous retinal detachment in the pediatric patient. AB - Nonrhegmatogenous retinal detachments occur in the pediatric population secondary to other ocular disorders. The most important cause to identify is retinoblastoma. Computed tomography has proven to be the most reliable ancillary diagnostic test in this pediatric population. A series of eighty patients, presenting with nonrhegmatogenous retinal detachments, was examined. The role of computed tomography and characteristic clinical findings are discussed. PMID- 3840245 TI - Management of retinopathy of prematurity. AB - Seventeen patients with symmetrical stage 3 retinopathy of prematurity (ROP) and plus disease as described in the International Classification of ROP had one eye randomized to cryotherapy and the other to control. Seventy-seven percent of the patients were under 1000 grams at birth and females outnumbered males by a 2 to 1 ratio. The average chronologic age at which cryotherapy was performed was three months. Twelve of seventeen treated eyes (71%) showed resolution of the ROP and 10 of 17 untreated eyes (59%) became significantly worse. However, only five patients had improvement in the treated eye and progression in the untreated eye, a number too small to provide statistical significance. Six eyes with Stage IV ROP were operated by encircling scleral buckling techniques because of total retinal detachment secondary to peripheral traction and cicatrization arising from the ridge. In five patients the unoperated eye had already developed a retrolental membrane, and in one patient bilateral detachments were present. Five of the six operated retinas were reattached. PMID- 3840246 TI - [Mortality of premature infants of very low birth weight and an analysis of factors contributing to survival]. PMID- 3840247 TI - [Various aspects of treatment of otosclerosis by venous interposition]. PMID- 3840249 TI - Cutaneous melanomas. The use of a computer to aid in the investigation of the disease. AB - Up to 49 items of information for each of almost 1400 cases of cutaneous melanoma have been computerized. Some of the resulting clinical and research implications are mentioned as well as the ability to use the computer to file, and rapidly sort, several hundred melanoma references from around the World and also to co ordinate the U.K. Melanoma Histology Club. PMID- 3840248 TI - Analgesia and tolerance to intrathecal morphine and norepinephrine infusion via implanted mini-osmotic pumps in the rat. AB - The objectives of this study were to investigate the duration of analgesia and the development of tolerance following continuous intrathecal administration of morphine and norepinephrine alone, and morphine followed by norepinephrine via mini-osmotic pumps in the rat. Analgesia was assessed by the tail-flick test. In single pump experiments morphine 1 microliter (10 micrograms)/h (7 days) and 0.5 microliter (10 micrograms)/h (14 days) produced analgesia with tolerance by days 5-7. Norepinephrine 1 microliter (15 micrograms)/h (7 days) produced analgesia equivalent to that of morphine with tolerance developing by day 3. Following continuous intrathecal morphine 1 microliter (10 micrograms)/h for 5 days, norepinephrine 1 microliter (15 micrograms)/h for 7 days failed to produce a significant increase in analgesia. This was in contrast to the increase in analgesia seen when the norepinephrine infusion followed a saline infusion. Determination of the norepinephrine concentration in the solution from the osmotic pumps verified that the norepinephrine is stable for the treatment period. PMID- 3840250 TI - Intrauterine conversion of fetal supraventricular tachycardia with combination of digoxin and verapamil. AB - A case of fetal supraventricular tachycardia (SVT) diagnosed by fetal echocardiography at 31 weeks gestation and successfully converted in utero is reported. Administration of digoxin orally to the mother resulted in very brief periods of normal fetal cardiac rhythm. Intravenous administration of verapamil to the mother resulted in sustained conversion to normal fetal sinus rhythm. Maintenance therapy with oral digoxin and verapamil was given to the mother for the remainder of the pregnancy with no recurrence of the fetal arrhythmia. PMID- 3840251 TI - Counseling the sexually active teenager: reflections from pediatric practice. AB - Counseling the sexually active teenager is both an important and a difficult undertaking. Due to the increasing rates in adolescent sexual intercourse, pregnancy, and sexually transmitted diseases, it is necessary for all health care professionals to elicit a sexual history from each patient. Being comfortable with one's own sexuality and conveying complete confidentiality are the sine qua non of this type of interview and counseling. Topics that may be covered are contraception, sexually transmitted diseases, sexual intercourse and its place in the adolescent's life, other kinds of sexual expression, and satisfaction with one's sexuality. It is not necessary to have liberal views of sexuality to obtain an adequate history or to provide competent counseling. PMID- 3840252 TI - [Indices of phase structure of myocardial contraction and relaxation in newborn infants who had undergone intrauterine hypoxia]. PMID- 3840253 TI - [Differential-diagnostic criteria of early manifestations of lymphosarcoma in children (clinico-morphofunctional study)]. PMID- 3840254 TI - [Pancreatic glucagon of blood plasma in Graves-Basedow disease in different stages of thyroid activity]. PMID- 3840255 TI - Public health implications of sexually transmitted diseases in pediatric practice. PMID- 3840256 TI - Campylobacter meningitis in childhood. PMID- 3840257 TI - [Prolactin secretion in patients with hyperthyroidism]. PMID- 3840258 TI - [Diffuse toxic goiter associated with autoimmune thyroiditis]. AB - A study of 190 patients with diffuse toxic goiter combined with autoimmune thyroiditis has revealed some clinical features: a torpid course and a solid elastic consistency of the thyroid. In 37.4% of the cases autoimmune thyroiditis was combined with a severe form of thyrotoxicosis. The combined form of diffuse toxic goiter correlated with a greater frequency of the detection of thyroid autoantibodies to thyroglobulin and microsomal antigen (in 83 and 78.3% of the patients respectively) as compared to the common form of diffuse toxic goiter (in 47.3 and 48.1%). A study of the hormonal thyroid status of 43 patients with diffuse toxic goiter combined with autoimmune thyroiditis showed that T3, T4 and TTH levels in patients with the presence of autoantibodies to thyroid antigens did not differ from the levels of these hormones in the common form of diffuse toxic goiter, and in the group of the patients with the absence of autoantibodies there was a tendency to the development of T3-toxicosis. The absence of pathognomic symptoms in combined forms of diffuse toxic goiter makes their preoperative diagnosis difficult. Interrelationship of the hormonal thyroid status and humoral antithyroid immunity was noted. PMID- 3840259 TI - [Mechanism of action of andekalin, an activator of the blood kinin system, on the course of experimental tuberculosis]. PMID- 3840260 TI - The control of herbage intake in the grazing ruminant. PMID- 3840261 TI - Feeding systems and food intake by housed dairy cows. PMID- 3840262 TI - Histochemical analysis of the interphotoreceptor matrix in hereditary retinal degenerations. PMID- 3840263 TI - Interstitial retinol binding protein in the developing human retina: a proposed explanation for vitamin E suppression of retinopathy of prematurity. PMID- 3840264 TI - Actions of hypolaetin-8-glucoside on the rat gut prostaglandin system. PMID- 3840265 TI - An attenuated projector-backprojector for iterative SPECT reconstruction. AB - A new ray-driven projector-backprojector which can easily be adapted for hardware implementation is described and simulated in software. The projector backprojector discretely models the attenuated Radon transform of a source distributed within an attenuating medium as line integrals of discrete pixels, obtained using the standard sampling technique of averaging the emission source or attenuation distribution over small square regions. Attenuation factors are calculated for each pixel during the projection and backprojection operations instead of using precalculated values. The calculation of the factors requires a specification of the attenuation distribution, estimated either from an assumed constant distribution and an approximate body outline or from transmission measurements. The distribution of attenuation coefficients is stored in memory for efficient access during the projection and backprojection operations. The reconstruction of the source distribution is obtained by using a conjugate gradient or SIRT type iterative algorithm which requires one projection and one backprojection operation for each iteration. PMID- 3840266 TI - The role of statistics in psychiatry. PMID- 3840267 TI - Psychopathology and Boolean Factor Analysis: a mismatch. AB - It has recently been claimed that Boolean Factor Analysis (BFA) is superior to more traditional approaches to empirical syndrome identification in psychopathology (Weber & Scharfetter, 1984). This paper examines the underlying assumptions and the empirical basis of this claim. A hypothetical data set, with a more complex structure than the examples used by Weber & Scharfetter to support their claim, is analysed by means of both BFA and Ordinary Factor Analysis (OFA). It is shown that, as data sets resemble empirical conditions more closely, BFA may break down completely while OFA continues to yield adequate results. PMID- 3840269 TI - [Value of double-contrast arthrography in the verification of meniscal pathology of the knee. Our experience]. AB - The authors face the problem of accuracy, specificity and sensitivity of double contrast arthrography in meniscal injury of the knee. They report the results obtained in a clinical-statistic and retrospective investigation on 206 patients. The final diagnoses were obtained by arthrotomy (105 cases) by arthroscopy (70 cases) and clinically with a follow-up of 6 months (31 patients). Diagnostic accuracy (94,5%), sensibility (92%), specificity (98,7%) and predictive values on positives (99%) and negatives (87,5%), confirm double-contrast arthrography as a highly accurate examination. A specific diagnosis can be made only when the diagnostic modalities are correctly applied and the arthrographers are qualified. PMID- 3840268 TI - Respiratory distress syndrome treated with human surfactant: radiographic findings. AB - Chest radiographs of 18 newborns treated with endotracheal instillation of human surfactant for respiratory distress syndrome (RDS) were compared with those of 18 similar but untreated infants. In the treated infants, severity of RDS significantly improved after surfactant administration. Most treated infants (16/18) exhibited a left-to-right shunt, presumably through a patent ductus arteriosus; similar findings were noted in untreated infants (17/18). Complications of respiratory assistance in the treated infants included transient pulmonary interstitial emphysema (n = 1), pneumothorax (n = 1), and mild (n = 4) to moderate (n = 2) bronchopulmonary dysplasia; the incidences of these complications did not exceed those in untreated infants. In three treated infants, a transient interstitial lung disease developed 3-4 days after surfactant administration. PMID- 3840270 TI - [Activity of sucralfate on esophageal motility in healthy subjects]. PMID- 3840271 TI - [Cochlear implants. Artificial hearing through electric stimulation of the auditory nerve with fixed implanted electrodes in the internal ear of the completely deaf subject]. PMID- 3840272 TI - REM sleep deprivation effect on apomorphine-induced gnawing is reversed by dexamethasone. AB - Glucocorticoid feedback was manipulated in rats deprived of REM for six days or left undisturbed in their home cages. One half of each group received concurrent dexamethasone (400 micrograms/kg), while the other half received corn oil. On test day, rats were observed for 5 min, injected with apomorphine (0.8 mg/kg, i.p.), and again observed. Dexamethasone revealed REM-deprivation-enhanced stereotypical gnawing, but had no effect on REM-deprivation-reduced rearing, suggesting the involvement of catecholamine depletion by non-specific stress related factors in the former REM deprivation effect. PMID- 3840273 TI - Science and law in chemical regulation: bridging the chasm. PMID- 3840274 TI - [Atomic-absorption spectrophotometry methods of determining levels of lead, cadmium, copper and zinc in milk and milk products. I. Direct AAS methods]. PMID- 3840275 TI - Therapeutic implications of mediastinal involvement in advanced Hodgkin's disease. AB - 47 patients with advanced Hodgkin's disease (stage IIIB or IV) and mediastinal involvement, treated during the period 1969-78 and followed till death or from 36 to 126 months after initiation of therapy, were analysed. All 47 patients had received combination chemotherapy (MOPP or equivalent regimens). 20 had also received additional radiotherapy to mediastinum (and in some cases to other involved areas as well). The 2 treatment groups did not differ significantly with regard to the more important prognostic factors. Both in the case of stages IV and IIIB patients in the group treated with combination chemotherapy alone, remissions were significantly more often only partial, the frequency of relapse and of treatment failure was significantly higher, and relapse-free survival was significantly poorer than in the group treated with additional radiotherapy. Furthermore, survival from Hodgkin's disease and crude survival including all causes of death were significantly better for patients treated with combination chemotherapy plus mediastinal irradiation. Consequently, for patients with advanced Hodgkin's disease and mediastinal involvement a combined approach including radiotherapy as well as combination chemotherapy would seem advisable. PMID- 3840276 TI - [Prevention of gastroduodenal stress lesions with secretion inhibitors in accident patients needing intensive care: incidence of lesions and adverse effects; consequences]. AB - Prevention of gastrointestinal stress lesions by cimetidine or pirenzepine was investigated in a double blind study of trauma patients in an intensive care unit. Cimetidine or pirenzepine were administered intravenously to 55 consecutive randomized patients. All were checked by endoscopy on admission and 8 days later. 5 therapy failures were found in each group. Patients with more than 5 erosions and/or ulcerations were classified as failures. A side effect encountered was sinus tachycardia in 4 of 27 patients treated with pirenzepine. Overall, a trend towards fewer stress lesions was found in the pirenzepine protected group. PMID- 3840277 TI - [Hashimoto's lymphomatous thyroiditis and endemic struma]. AB - Hashimoto's thyroiditis, a rather rare disease in endemic goiter areas like Switzerland, seems to become more frequent under iodine prophylaxis. To obtain more precise data we reviewed the microscopic slides of surgical thyroid specimens with indications of any type of inflammation from two 10-year periods with respectively lower (1940-1949) and higher (1973-1982) iodination of salt. From 1940-1949 Hashimoto's disease was never diagnosed histopathologically. A review of the histological slides, however, showed typical signs of Hashimoto's disease in 9 out of 6836 thyroid specimens, or 0.13%. In the second period, from 1973-1982, the same diagnosis was established in 32 of 4088 thyroid specimens, or 0.78%. This 6-fold increase in frequency of Hashimoto's disease seems to be due in part to a real increase, and in part to a change in the surgical material. At present fewer nodular goiters are seen than in the first period. Inflammatory infiltration in Hashimoto's disease, however, involves not the nodule but the non nodular thyroid tissue found to a larger extent in present-day thyroid surgical specimens. PMID- 3840278 TI - Chromosomal locations of human tissue plasminogen activator and urokinase genes. AB - A panel of human-mouse somatic cell hybrids and specific complementary DNA probes were used to map the human tissue plasminogen activator and urokinase genes to human chromosomes 8 and 10, respectively. This result is in contrast to a previous assignment of a plasminogen activator gene to chromosome 6. As neoplastic cells produce high levels of plasminogen activator, it is of interest that aberrations of chromosome 8 have been linked to various leukemias and lymphomas and that two human oncogenes, c-mos and c-myc, have also been mapped to chromosome 8. PMID- 3840279 TI - Human tumor cloning assay: clinical applications for ovarian, gastric, pancreatic, and colorectal cancers. AB - In this investigation, the human clonogenic assay is used as a tool to identify which chemotherapeutic agents may be of interest for intraperitoneal administration. Both conventional and investigational agents are examined in ovarian, colorectal, pancreatic, and gastric carcinomas. Scattergrams plotting the in vitro percent response against the in vivo percent response provide some clinical correlation with the observed in vivo antitumor activity. In addition, anticancer agents are identified for which evidence of a dose-response relationship is observed in the clonogenic assay. Such evidence is offered as the basis for the choice of agents that may be useful for intraperitoneal administration. PMID- 3840280 TI - Non-Hodgkin's lymphoma in pregnancy. AB - Pregnancy in patients who have non-Hodgkin's lymphoma is unusual. We have reported a case of diffuse, poorly differentiated lymphocytic lymphoma, stage IIIa, in a patient whose disease went into remission after she received six courses of CHOP therapy (cyclophosphamide, doxorubicin, vincristine, and prednisolone). She became pregnant soon afterward and was delivered of a normal, full-term infant with a normal chromosomal pattern. Risk of teratogenicity appears to be negligible when chemotherapy is used during the third trimester of pregnancy. PMID- 3840281 TI - Mycotic aneurysm--a rare complication of acute osteomyelitis in a child. A case report. AB - A case of mycotic aneurysm formation of the right iliac artery is described. This unusual complication developed as a result of acute osteitis of the left tibia which was initiated by a kick on the lower leg. One month after treatment for osteitis of the tibia, the patient was readmitted because of unequivocal evidence of ischaemia of the right leg and a large pulsatile mass in the right iliac fossa, confirming the clinical diagnosis of mycotic aneurysm. The aneurysm was excised but because the wall of the artery was extremely friable simultaneous revascularization was deferred for fear of uncontrollable haemorrhage from the anastomotic line. PMID- 3840282 TI - Asymmetry and anomalies of the circle of Willis in fetal brain. Microsurgical study and functional remarks. AB - The arteries of the circle of Willis in fetal brains of 20-40 weeks of gestational age were studied with the operating microscope. The majority of fetuses were between 24-32 weeks of age. Our findings were as follows: 1) the average diameters of all segments were 4-5 times narrower than the average diameters in adults, and the average lengths of the same segments were 2-2.5 times shorter than the same lengths in adults; 2) the number of perforators corresponded with the perforating arteries in adults; 3) hypoplastic segments, as well as anomalies and variations, were identified; 4) calibers almost equal in size between the right and left corresponding segments were found in a high proportion of cases; 5) in the majority of cases a polygon, much like the "precarious" circle in adults, was dissected. The "fetal" or the "ideal" circles were found in a low proportion of cases. PMID- 3840283 TI - [Results of the treatment of lymphosarcoma of the large intestine]. AB - Comparative study of the efficacy of the different therapeutic measures for colonic lymphosarcoma indicates that in locally disseminated colonic lymphosarcoma (primary injury) radical surgery appears to be the most efficacious. Application of the drug therapy is helpful for disseminated primary colonic lymphosarcoma and metastatic injuries. The performance of the palliative surgery noticeably deteriorates the disease prognosis. PMID- 3840284 TI - [Autoimmune thrombocytopenia and diffuse-toxic goiter]. AB - The authors describe 10 patients with associated diffuse toxic goiter and thrombocytopenic purpura and a female patient with associated goiter and a three shoot autoimmune peripheral cytopenia. In 8 patients thyrotoxicosis preceded the appearance of thrombocytopenia, in 3 patients, both the conditions were diagnosed at a time. In 4 patients, the measurements were taken of the IgG content on the surface of platelets according to Dixon et al. In 3 patients, the IgG content turned out to be appreciably elevated, in one patient, the content of IgG was within normal, however the latter patient was examined after prednisolone intake that had given rise to an increase in the platelet count. Two patients who received radioactive iodine and three patients treated by thyrostatic drugs were later on subjected to splenectomy. In 4 patients, thrombocytopenic purpura remitted after subtotal strumectomy. One female patient was subjected to sectoral resection of the thyroid. Two years after surgery the patient, who was in an euthyroid state, developed thrombocytopenia which required splenectomy. It is possible that in the latter case there was no direct relation between the two diseases. The relationship between the two autoimmune diseases, diffuse toxic goiter and thrombocytopenic purpura, remained unclear in other 10 cases. The relationship between the diseases under consideration and approaches to specifying the character of such a relationship are under discussion. PMID- 3840285 TI - Cardiovascular system in conjoined twins: an analysis of 14 Korean cases. AB - A new classification of cardiovascular system in conjoined twins is introduced. A special effort has been made to analyze the degree of fusion and symmetry of hearts and great vessels, based on 14 pairs of conjoined twins. The degree of cardiovascular union of the twins is classified into five types. Cases with no vascular union in cardiac, aortic, and inferior vena caval levels were grouped into type I (four cases). Cases with separate hearts and union between aortas or inferior venae cavae were grouped into type II (three cases). Cardiac fusion at the atrial level was grouped into type III (three cases). All of the three cases showed fusion between right atria (subtype IIIa). The theoretical fusion between the left atria or between the left and right atria is put into subtype IIIb. The type IV represents fusion of both atria and ventricles regardless of the number of the chambers (three cases). Type V represents single heart in one of the twins (one case). The external morphologic type and the situs of each twin pair were closely related to the cardiac abnormalities. Dicephalus and thoracopagus were more likely to be associated with abnormal situs and complex cardiac fusion. Abnormal situs was seen in seven out of 14 cases. Three cases with polysplenia and a case with asplenia showed more complex cardiac abnormalities than those with normal situs or situs inversus. PMID- 3840286 TI - [The choice of an antibiotic for ambulatory clients]. PMID- 3840287 TI - Protein C deficiency--response to danazol and DDAVP. AB - We studied a Spanish family in which one of the female members presented recurrent thrombophlebitis in both legs after three different deliveries. Biological and antigenic activity of protein C was decreased (35% and 42% respectively). Reduced protein C levels were also observed in 6 other family members. Administration of danazol (600 mg/day) in two patients with protein C deficiency elevated this protein and discontinuation of the drug resulted in a reduction of protein C to pretreatment values. The proposita showed a normal fibrinolytic activity and infusion of DDAVP produced a similar response of FVIII/VWF and plasminogen activator to those observed in healthy subjects. PMID- 3840288 TI - Vitamin K dependent proteins in fetal hemostasis at mid trimester of pregnancy. AB - The vitamin K dependent coagulation factor activities were measured in 63 normal human fetuses from 19 to 28 weeks of pregnancy. These activities were included between 9 to 28 percent of normal adult levels. Prothrombin antigen, factor IX antigen and protein C were also measured. There is a good correlation between prothrombin procoagulant activity and antigenicity, suggesting that low level of these vitamin K dependent proteins in fetuses is probably a consequence of liver immaturity. PMID- 3840289 TI - Homozygous protein C deficiency combined with heterozygous dysplasminogenemia found in a 21-year-old thrombophilic male. AB - A congenital, probably homozygous deficiency of protein C combined with a heterozygous molecular abnormality of plasminogen was found in a 21-year-old male who had been suffering from recurrent venous thrombosis since the age of 14. Although the homozygous deficiency of protein C has been reported to be closely associated with fatal purpura fulminans or severe and massive thrombotic diseases during the neonatal period, the patient had survived the neonatal period without any clinical manifestations relevant to thrombosis. The patient apparently inherited the genetic abnormality of protein C deficiency from both of his parents and that of abnormal plasminogen from his father. PMID- 3840291 TI - Chi-square trend analysis in antigen sharing studies. AB - Chi-square trend analysis is a useful technique for testing the statistical significance of dose-response associations between morbidity or mortality variables and degree of parental or maternofetal antigen sharing. PMID- 3840290 TI - Inhibition by AD6 (8-monochloro-3-beta-diethylaminoethyl-4-methyl-7 ethoxycarbonyl methoxy coumarin) of platelet aggregation in dog stenosed coronary artery. AB - The action of AD6 as an anti-thrombotic agent was studied in a model of coronary artery thrombosis and on platelet aggregation in the dog. AD6 (10-100 microM) in vitro inhibited aggregation induced by ADP, epinephrine, collagen and PAF (platelet aggregating factor) used at their threshold concentration for maximal aggregation. Arterial thrombosis was induced in a coronary vessel by critically reducing (about 70%) the vessel lumen. Thrombus formation was estimated by measuring coronary flow in the stenosed vessel. Using this procedure on the left descending coronary artery (LAD), we obtained reproducible blood flow changes in 18 dogs. AD6 was given i.v. at three different doses. At 0.25 mg/kg two out of four dogs showed decreased thrombus formation at the stenosis site. Seven out of eleven dogs treated with 0.5 mg/kg and two out of three treated with 1.5 mg/kg showed decreased thrombus formation. Major decreases in coronary resistance, evaluated by measuring blood flow in the unstenosed left circumflex artery (LCX), were evident only after the highest dose. We conclude that AD6 has an inhibitory action on dog platelet aggregation and reduces thrombus formation in a stenosed coronary vessel. PMID- 3840292 TI - A model of the regional uptake of gaseous pollutants in the lung. I. The sensitivity of the uptake of ozone in the human lung to lower respiratory tract secretions and exercise. AB - An ozone (O3) dosimetry model is presented that takes into account convection and diffusion of O3 in the lumen and airspaces of the lower respiratory tract and transport and chemical reactions in the mucous and surfactant layers and in the underlying tissue and capillaries. The model was applied to human airway morphometric data. Values for the chemical and physical parameters that define the liquid tissue and blood compartments were based on reported experimental data. Simulation results illustrate the variability of results due to an uncertainty in the knowledge of transport parameters, liquid, tissue, and blood compartment thicknesses, and chemical reaction rates. Results were most sensitive to mucous compartment thickness and reaction rate constant and least sensitive to transport and blood parameters. Exercise was simulated, showing little effect on tracheobronchial uptake but a pronounced effect on pulmonary uptake. PMID- 3840293 TI - Leukocyte and bone marrow effects of a thiomorpholine quinazosin antihypertensive agent. AB - PD-88823, a thiomorpholine analog of prazosin, induced a consistent dose-related suppression of granulopoiesis with subsequent neutropenia and leukopenia in rats and dogs. Rats treated at 600 mg kg-1 day-1 had neutrophil counts reduced by 44% in males and 30% in females after 13 weeks. A 4-week observation period after drug treatment resulted in a rebound in neutrophil counts to 123 and 215% of control values in males and females, respectively. White blood cell count reductions were less evident in dogs, probably because of the lower doses. In both species, the extent of bone marrow suppression was related to duration of treatment. No other hematologic changes were manifest in either species. The mechanism for bone marrow depression and subsequent granulocytopenia was not established. The lack of reported bone marrow effects by quinazosin analogs suggests that the thiomorpholine group of PD-88823 is involved in toxicity. This correlation may be important to safety considerations for future drug design. PMID- 3840294 TI - Modification of rat caecal microbial biotransformation activities by dietary saccharin. AB - Male Sprague-Dawley rats were fed a purified fibre-free diet containing 5% (w/w) sodium saccharin for 4 weeks or 20 weeks and changes in caecal bacterial numbers and enzyme activities (endogenous ammonia production, beta-glucosidase, beta glucuronidase, nitrate reductase, nitroreductase, aryl sulphatase) determined in vitro. Saccharin treatment gave marked caecal enlargement but had no effect on bacterial concentration at either treatment period, and significantly decreased beta-glucuronidase, nitrate reductase and sulphatase activities/g caecal contents. The incubation of a suspension of caecal contents from control rats with saccharin (75 mM) in vitro inhibited beta-glucuronidase and nitrate reductase activities, and ammonia production from endogenous substrates. Such changes may decrease the rate of formation of toxic bacterial products in the hindgut. PMID- 3840295 TI - Contribution of intestinal microfloral metabolism to the total macromolecular covalent binding of 1-nitro-pyrene in the lung and liver of the rat. AB - 1-Nitropyrene (NP) is a direct acting mutagen found in diesel exhaust and coal combustion fly ash. The purpose of this study was to investigate the contribution of gut microfloral metabolism to the macromolecular covalent binding (MCB) of NP and/or its metabolites in lungs and liver of the rat. Normal and antibiotic treated rats were administered [14C]NP and MCB was quantitated at various times in lungs and livers. Abolition of gut microfloral metabolism by antibiotic treatment significantly altered total MCB in lungs. MCB in lungs of antibiotic treated animals 4 h after oral administration of NP was 0.15 nmol NP equivalents/g and was significantly (P less than 0.05) decreased to less than one half of control values (0.42 nmol NP equivalents/g). MCB in lungs of antibiotic treated rats was no different from the controls 1 week after NP administration (0.1 nmol NP equivalents/g). Comparison of livers from control and antibiotic treated rats demonstrated the same pattern of MCB as lungs but differences were not significant. These results reveal that metabolism by gut microflora may play a role in the activation and covalent binding of NP to macromolecules. However, the alteration of covalent binding observed after antibiotic treatment was a change in the time course of formation and breakdown of covalently bound forms and not an effect on the quantity of bound material remaining at 1 week indicating that gut microfloral metabolism is not an exclusive pathway for bioactivation of NP in the rat. PMID- 3840296 TI - The cell content and proliferative response of the rat thymus during first syngeneic and allogeneic pregnancy, and the effects of strain difference. AB - Two hundred female rats, 91-101 days of age, were used in this investigation which provided data on cell content and proliferative response of the thymus. The observations began in oestrous phase virgin females from two highly inbred strains AO(RT1u/AgB2) and DA(RT1a/AgB4), continued at five day intervals throughout syngeneic and allogeneic pregnancy in both strains and were completed in the immediate post-partum period. This experimental protocol permitted sequential observations throughout gestation and allowed syngeneic: allogeneic and interstrain comparisons to be made. The syngeneic: allogeneic comparisons demonstrated significant differences in the thymic proliferative responses while the AO:DA comparisons demonstrated significant differences in the thymic cell contents. PMID- 3840297 TI - [Total laryngospasm in kalipsol anesthesia]. PMID- 3840298 TI - A comparison of some casting materials. AB - The physical and mechanical properties of four casting materials are compared with two plaster of Paris preparations. Properties evaluated include working and specific strengths, resistance to abrasion and radiolucency. Ease of application, conformability and rate of strength development are discussed and the clinical relevance of these properties is considered. PMID- 3840299 TI - Efficacy of ivermectin against induced gastrointestinal nematode infections in goats. AB - The efficacy of ivermectin (0.08 per cent w/v oral solution) at different dose levels was evaluated against induced infections of adult Haemonchus contortus (21 days old) and Trichostrongylus colubriformis (21 days old) and fourth stage larvae of Oesophagostomum columbianum (17 days old), Ostertagia circumcincta (five days old) and Strongyloides papillosus (five days old). Twenty-five Boergoats (mutton goats) were randomly allocated by bodyweight within each sex to an untreated control group and four ivermectin treatment groups; ivermectin was administered at either 25, 50, 100 or 200 micrograms/kg orally, once. The goats were killed and processed for worm recovery 25 to 27 days after treatment. At 25 micrograms/kg the efficacy of ivermectin varied from 43 per cent for adult T colubriformis to more than 99 per cent for fourth larval stage O columbianum. Ivermectin at 50 micrograms/kg or higher was 99 per cent or more effective against all induced parasite infections with the exception of ivermectin at 50 micrograms/kg against S papillosus (97 per cent). For all parasites there was a statistically significant (P less than 0.05) difference between the control group and the pooled treated groups. No adverse reactions to ivermectin treatment were observed in the goats. PMID- 3840300 TI - [Cardiotoxic effect of cytostatics in patients with breast cancer]. AB - Clinical and instrumental (ECG, PCG, ultrasonic cardiography and polycardiography) examination of cardiac activity in 98 breast cancer patients treated at the Center after Cooper established the cardiotoxic effect of 5 fluorouracil, vincristine, methotrexate, cyclophosphamide and corticosteroids. 46% of them suffered pain in the region of the heart, tachycardia, extrasystole, atrial flutter and deranged conduction function. Congestive heart failure was observed in 7% only. In 24%, myocardial lesions could be detected by instrumental means only. They were identified on the basis of an increase in terminal diastole and systole volume and mass of the myocardium matched by a decrease in stroke volume, PCG amplitude, % delta S and VCF. Cardiac disorders did not persist and were hardly detectable during medication course intervals or one-two months after treatment. PMID- 3840301 TI - An approach to peripheral lymphadenopathy in adult patients. PMID- 3840302 TI - [Lactose intolerance]. PMID- 3840303 TI - [Use of neodym-YAG-lasers in ophthalmology]. AB - Structures within the eye bulb diminishing visual acuity can be cut by means of neodymium-YAG-laser without surgical opening of the globe. The First Eye Department has had the first instrument of this kind in Vienna at its disposal since the summer of 1984. Up to now it has been used for posterior capsulotomy, iridotomy, opening pupillary membranes and for cutting vitreous membranes in 84 operations altogether. The advantages of neodymium-YAG-laser are minimal psychological and physical stress for the patient and the possibility of out patient surgery. A possible transient increase in the eye pressure and endothelial cell loss are disadvantages. Our experiences with the Lasertek Neodymium-YAG-laser model 135 are reported. PMID- 3840304 TI - [Experiences with PATIS, the patient information system]. PMID- 3840305 TI - [Multidimensional evaluation of qualitative medical record data--references for computer-technic realization of a special procedure]. PMID- 3840306 TI - [Possibilities and significance of transarthroscopic operations]. AB - This paper reports on a poll conducted among 80 patients one to seven months after transarthroscopic knee joint surgery. PMID- 3840307 TI - Antithrombotic effects of acetylsalicylic acid (ASA) and pentoxifylline in laser induced thrombosis in rat mesenteric vessels. PMID- 3840308 TI - [Experience with the use of T-activin in the treatment of psoriasis]. PMID- 3840309 TI - [Equipment and program for recording and automatic processing of the electrocardiogram of a pilot]. PMID- 3840310 TI - [Lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase in skeletal muscles. VI. Influence of freezing (-20 degrees C) and thawing of bovine, calf and porcine muscle on activity and subcellular distribution]. AB - Freezing of bovine, calf, and porcine skeletal muscles at -20 degrees C before or after rigor mortis and thawing at room temperature did not cause significant changes in the total activities of the mitochondrial enzymes lipoamide dehydrogenase, citrate synthase, and beta-hydroxyacyl-CoA-dehydrogenase. Freezing (pre or post rigor) and thawing result in a partial release of these enzymes from their binding to the inner membrane of the mitochondria. The transfer of enzyme activity into the sarcoplasmic fluid is due to damage of the mitochondrial membranes by freezing and thawing of the muscle tissue. During longer storage of the muscle at +2 degrees C the mitochondria become more labile towards freezing which may be recognised from an increased release of the enzymes (particularly in porcine muscle). Repeated freeze/thaw cycles cause an increase in the release of the three enzymes. PMID- 3840311 TI - [Lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase in skeletal muscles. VII. The influence of freezing (-20 degrees C) and thawing of muscles from sheep, game and poultry on activity and subcellular distribution]. AB - Freezing at -20 degrees C and subsequent thawing of muscles from sheep, hare and deer, and of breast and leg muscle from chicken and duck, did not result in significant changes of the total activity of the enzymes citrate synthase and beta-hydroxy-acyl-CoA-dehydrogenase; lipoamide dehydrogenase seemed to be somewhat more labile. Freezing and thawing of muscle tissue caused a partial release of these three mitochondrial enzymes into the sarcoplasmic fluid which indicates similar freeze-damage of the inner membrane of the mitochondria to that observed with bovine and porcine muscles. PMID- 3840312 TI - [Lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase in skeletal muscle. VIII. The influence of temperature and rate of freezing of bovine muscle on the activity and subcellular distribution of the enzymes in the thawed tissue]. AB - Samples of bovine muscle (post rigor) were frozen at different temperatures between -5 degrees and -196 degrees C at different freezing rates, and thawed at room temperature. The activities of the mitochondrial enzymes lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase were determined in the supernatant of the tissue homogenates in phosphate buffer (total enzyme activity), as well as in the press juice of the intact tissue (enzyme activity in the sarcoplasma). Neither the temperature nor the rate of freezing (varying from 25.5 to 0.01 min/degrees C) showed a significant influence on the total enzyme activities. Freezing at -5 degrees and -10 degrees C (at different rates but without intracellular freezing) and thawing did not result in an appreciable release of enzymes. Below -10 degrees C the release of the three enzymes from their binding to the inner membrane of the mitochondrion into the sarcoplasmic fluid increased upon rapid freezing with decreasing temperature i.e. with increasing intracellular ice formation, whereas at slow freezing (with extracellular ice formation only) freezing below -20 degrees C did not cause further enzyme release. At freezing temperatures below -20 degrees C rapid freezing resulted in a significantly stronger release of the three enzymes than slow freezing. From these results it was concluded that the damage to mitochondrial membranes upon fast freezing is primarily a result of intracellular (and perhaps also intramitochondrial) ice formation, whereas the membrane damage during slow freezing is primarily due to dehydration caused by the migration of water from the muscle fibers into the extracellular space as a result of osmotic effects. Ion concentration in the nonfreezing fraction of tissue water seems to be only of minor importance for the disintegration of mitochondrial membranes. PMID- 3840314 TI - [Results of surgical treatment of meniscal injuries]. PMID- 3840313 TI - [The "long-term morbidity" computer program in perinatology. 1. Program introduction]. AB - Presentation of the Computer-programme for prospective analysis of morbidity of unselected children born in 1983 up to 1985 over a period of 10 years. PMID- 3840315 TI - Histochemistry on rectal biopsies in the diagnosis of Hirschsprung's disease. PMID- 3840316 TI - Microglia in teratomas. AB - Using an ammoniacal silver nitrate stain, we have demonstrated typical microglial cells in three teratomas. Microglia appeared identical to their counterparts in the mature human brain, both resting and slightly hypertrophic types being present in differentiated nervous tissue, which also comprised astrocytes, neurones and ependyma. The implications of the presence of microglia with ectodermal derivatives in teratomas are discussed. PMID- 3840317 TI - Effect of phosphate supplementation to breast fed very low birthweight infants on urinary calcium excretion, serum immunoreactive parathyroid hormone and plasma 1,25-dihydroxy-vitamin D concentration. AB - The effect of two doses of Phosphorus (P) supplementation to pooled breast milk (BM): 0.48 and 0.800 mmol/kg/24 h given during the second month of life was evaluated in 22 very low birthweight infants. The concentration of calcium and phosphorus in serum and urine, the serum concentration of immunoreactive parathyroid hormone (iPTH) and the plasma 1,25-dihydroxy-vitamin D concentration (1,25-OH-D) were compared to the values in 19 control infants. The mean +/- SD concentrations in control infants and adults are 63 +/- 18 microliters Eq/ml for serum iPTH and 85 +/- pmol/l for plasma 1,25-OH-D. With 0.48 P supplementation, urinary Ca (UCa) excretion (median and range) 0.238 mmol/kg/24 h (0.105-0.520) was lower than in the control group 0.288 (0.205-0.679) (p less than 0.05); the reduction of UCa was larger with 0.8 P supplementation: 0.047 (0.023-0.163) (p less than 0.01). P supplementation induced no change in serum Ca concentration but a slight and significant increase in serum iPTH was observed only with the 0.8 P supplementation: 55 microliters Eq/ml (less than 25-80) (p less than 0.05). With 0.8 P supplementation there was no significant change of plasma 1,25-OH-D concentration: 173 pmol/l (106-271) vs. 255 (132-293) in the control group. These data show that with 0.8 P supplementation, the hypercalciuria in BM-fed infant disappears without secondary hyperparathyroidism, but without any change in plasma 1,25-OH-D concentration. PMID- 3840318 TI - Evaluation of ten commercial heterophile antibody tests for infectious mononucleosis. AB - Ten rapid slide agglutination tests for infectious mononucleosis were evaluated. The quality of the technical information included with the kits was found to differ considerably, as did the composition of the tests and the principles of test specificity. Furthermore, large variation was found in the shelf life and price of the different kits. Thirty-nine serum samples were selected according to titre in the Paul-Bunnell-Davidsohn differential absorption test, largely from the low titre area, since this is where most diagnostic problems can be expected. The sera were tested blindly using the ten rapid slide agglutination tests. Considerable differences were found in specificity and sensitivity. When compared with the results obtained from PBD, the tests could be divided into two groups. The first group consisted of three kits, all of which gave false negative, but no false positive results. The remaining seven tests gave false negative and false positive results, but were more sensitive than the tests in the first group. The large variation in the results obtained when using the different kits under controlled conditions indicates that such tests may give even less satisfactory results in practice. PMID- 3840319 TI - Neuropeptide Y and sympathetic control of heart contractility and coronary vascular tone. AB - The effects of neuropeptide Y (NPY) on contractility of the spontaneously beating guinea-pig atrium and transmural nerve stimulation (TNS)-induced efflux of tritium-noradrenaline (3H-NA) were studied in vitro. NPY induced a moderate positive chronotropic and inotropic atrial response, which was resistant to metoprolol. TNS at 2 Hz for 2 s caused an increase in rate and contractile force. These effects were significantly reduced by NPY. NPY also reduced the TNS induced (2 Hz for 20 s), fractional [3H]NA release by 40% without affecting the contractile response. The contractile effects of exogenous NA on the guinea-pig atrium were not affected by NPY. NPY caused a long-lasting increase in coronary perfusion pressure, and also, in high doses, an inhibition of ventricular contractility in the isolated, perfused guinea-pig heart. The perfusion pressure increase to NPY, which most likely reflects coronary vasoconstriction, was resistant to alpha- and beta-adrenoceptor blockade but sensitive to the calcium antagonist nifedipine. A 50% reduction of the vascular NPY response occurred at 10(-9) M nifedipine, which did not influence cardiac contractility per se or the contractile effects of NA. NPY did not modify the increase in ventricular contractility induced by NA. Noradrenaline did not influence coronary perfusion pressure after beta-blockade. Since NPY is present together with NA in cardiac nerves, it may be suggested that NPY is involved in the regulation of NA release as well as the sympathetic control of atrial contractility and coronary blood flow. PMID- 3840320 TI - Plasma levels of oxytocin increase in response to suckling and feeding in dogs and sows. AB - The objective of the present study was to investigate whether oxytocin is released in response to feeding in analogy to the response induced by suckling. Therefore, repeated plasma samples were drawn from dogs and pigs during feeding and suckling and oxytocin levels were determined by radioimmunoassay. As expected suckling gave rise to immediate and short-lasting increases of oxytocin levels in both species. More surprisingly, feeding in female and male dogs as well as in lactating sows was accompanied by a similar-sized rise of oxytocin levels. The oxytocin peak sometimes occurred before the actual period of suckling or feeding, suggesting that the output of oxytocin had been conditioned to visual, olfactory or auditory stimuli associated with both types of situations. It is well known that oxytocin is released in lactating animals in response to touching of the teats. It is possible that also the presence of food in the gastro-intestinal tract activates neurogenic mechanisms which stimulates the release of oxytocin. Since oxytocin causes a release of insulin and VIP (vasoactive intestinal polypeptide), peptides which appear in the circulation following both suckling and feeding, it is suggested that oxytocin may be involved in the control of the suckling- and feeding-related output of these peptides. PMID- 3840321 TI - Mechanisms underlying changes in the contents of neuropeptide Y in cardiovascular nerves and adrenal gland induced by sympatholytic drugs. AB - Neuropeptide Y (NPY) is a recently isolated vasoactive peptide, which is present, together with catecholamines, in sympathetic nerves and in the adrenal medulla. In the present study, we report that pretreatment with sympatholytic agents influences the tissue levels of NPY-like immunoreactivity (NPY-LI) in the guinea pig. Thus, 24 h after reserpine not only noradrenaline (NA), but also NPY-LI, was depleted in the heart, spleen and the adrenal gland. The levels of NPY-LI in the vas deferens and stellate ganglia, however, were unaffected by reserpine in spite of marked depletions of NA. The reserpine-induced depletion of NPY-LI was probably caused by enhanced nerve-impulse flow and subsequent release from cardiovascular nerves in excess of resupply, since it could be prevented by the ganglionic-blocking agent chlorisondamine. Long-term (6 days) treatment with chlorisondamine reduced the levels of NPY-LI in the stellate ganglion. Short-term treatment (48 h) with guanethidine partially prevented the reserpine-induced depletion of NPY-LI, probably due to inhibition of NPY release. Long-term guanethidine treatment depleted not only NA, but also NPY-LI from the spleen. Pretreatment with the alpha-receptor antagonist phenoxybenzamine did not influence the NA levels but reduced the content of NPY-LI in the spleen via a mechanism that was dependent on intact ganglionic transmission. Since NPY has several cardiovascular actions, changes in NPY mechanisms may contribute to the pharmacological and therapeutical effects of sympatholytic agents. PMID- 3840322 TI - Subcellular storage and axonal transport of neuropeptide Y (NPY) in relation to catecholamines in the cat. AB - The subcellular storage of neuropeptide Y-like immunoreactivity (NPY-LI) in peripheral sympathetic neurons and adrenal gland as well as its axonal transport in the sciatic nerve was studied in relation to catecholamines in the cat. In the subcellular fractions from different parts of sympathetic neurons, i.e. cell bodies (coeliac ganglia), axons (sciatic nerve) and terminals (spleen), the NPY LI was found together with noradrenaline (NA) in heavy fractions assumed to contain large dense-cored vesicles. In addition, minor lighter fractions in the coeliac ganglion contained NPY-LI. The molar ratio between vesicular NA and NPY was high in the terminal regions (150 to 1) and much lower in axons and cell bodies (10 to 1), thus reflecting the different mechanisms of resupply for classical transmitter and peptide. In the adrenal gland the NPY-LI was mainly located in the catecholamine-storing chromaffin-granule fraction and also to a smaller extent in lighter fractions. Using reversed-phase HPLC, one molecular form of NPY-LI corresponding to porcine NPY was found in the coeliac ganglion, while the adrenal medulla also contained minor peaks with NPY-LI in addition to the main form, which co-eluted with porcine NPY. NA was stored both in light and heavy fractions in the spleen, while it was mainly found in heavier fractions in the sciatic nerve. In the coeliac ganglion, most of the noradrenaline was present in a non-particulate form. The anterograde transport rate for NPY-LI in the sciatic nerve was estimated to be about 9 mm h-1. A minor retrograde transport of NPY-LI was also detected. In conclusion, the present data suggest that NPY, a peptide with sympathoactive actions, is co-stored with NA in heavy fractions corresponding to large dense-cored vesicles, while light fractions with small dense-cored vesicles probably contain NA but not NPY-LI. The main resupply of NPY to terminals is, in contrast to NA, most likely by axonal transport, which implicates differences in the storage, turnover and release of these co-existing substances in the sympathoadrenal system. PMID- 3840323 TI - Effect of anti-inflammatory drugs on xanthine oxidase and xanthine oxidase induced depolymerization of hyaluronic acid. AB - The inhibitory effect of various anti-inflammatory drugs on the xanthine oxidase derived depolymerization of hyaluronic acid was studied. The depolymerization was assayed by repeated viscosity measurements. By using a low xanthine oxidase activity, the decrease in viscosity with time followed first order reaction kinetics and was therefore suitable for kinetic analysis. The xanthine oxidase activity was monitored by assay of O2-consumption with a Clark-electrode and by assay of urate production. We present evidence that salicylic, acetylsalicylic, gentisic and azodisalicylic acid and sulfasalazine inhibit the production of oxygen-derived free radicals by xanthine oxidase. We found that sulfapyridine, 5 aminosalicylic acid, allopurinol, mannitol, glucuronic acid and N acetylglucosamine in addition to the earlier studied drugs, paracetamol, ibuprofen, benoxaprofen and gentisic acid exert their effect via scavenging of free radicals. These drugs had very little effect on the enzyme activity. PMID- 3840324 TI - The effects of acute hypertriglyceridemia and high levels of free fatty acids on left ventricular function. AB - The effects of acute hypertriglyceridemia and of high levels of free fatty acids on the left ventricular ejection fraction were studied by radionuclide ventriculography in 20 subjects with and without coronary artery disease. An infusion of approximately 125 ml of a 20% fat emulsion over 25 minutes resulted in an increase of plasma triglycerides to the mean of 820 mg/dl and a fall of the left ventricular ejection fraction from the baseline mean of 62% to 58% (p less than 0.05). Ninety minutes after the intravenous administration of 5000 units of heparin, plasma free fatty acids rose to the mean of 4.6 mmol/L and the mean left ventricular ejection fraction increased to 69% (p less than 0.001). The observed changes in blood lipids were not associated with clinical or ECG evidence of myocardial ischemia. We conclude that acute hypertriglyceridemia causes slight depression of left ventricular performance, while high levels of free fatty acids augment it. However, neither hypertriglyceridemia per se nor its rapid conversion to free fatty acids are likely to cause angina in stable patients with coronary artery disease. PMID- 3840325 TI - Ultrasound: biological effects and industrial hygiene concerns. AB - Due to the increased use of high intensity ultrasonic devices, there is now a greater risk of worker exposure to ultrasonic radiation than there was in the past. Exposure to high power ultrasound may produce adverse biological effects. High power ultrasound, characterized by high intensity outputs at frequencies of 20-100 kHz, has a wide range of applications throughout industry. Future applications may involve equipment with higher energy outputs. Contact ultrasound, i.e., no airspace between the energy source and the biological tissue, is significantly more hazardous than exposure to airborne ultrasound because air transmits less than one percent of the energy. This paper discusses biological effects associated with overexposure to ultrasound, exposure standards proposed for airborne and contact ultrasound, industrial hygiene controls that can be employed to minimize exposure, and the instrumentation that is required for evaluating exposures. PMID- 3840326 TI - Evaluation of cyclophosphamide, adriamycin, and cis-platinum (CAP) in patients with disseminated prostatic carcinoma. A phase II study. AB - A prospective study was conducted to evaluate response rate and toxicity of the combination of cyclophosphamide, adriamycin, and cis-platinum in patients with disseminated hormonally resistant prostatic carcinoma. Twenty-two patients were entered in the study: 19 were evaluable for response. One patient achieved partial remission while 14 (73%) had stable disease. Four patients had progressive disease. Patients with stable disease and partial remission had subjective improvement and survived significantly (p less than 0.03) longer than patients with progressive disease (58 weeks vs. 22 weeks). Toxicity was mainly hematological, and one patient died from sepsis secondary to leukopenia. Nausea and vomiting was moderate to severe, with one patient refusing cis-platinum for that reason. Renal toxicity was tolerable and reversible. Lack of good measurable disease makes generalization difficult, but pointers from animal models, along with the biological activity suggested by our results, make this a worthwhile combination to be considered for a trial in a larger population with measurable disease or in a randomized trial vs. the more effective single agent. PMID- 3840327 TI - Gastric cancer: complete chemotherapy response in an elderly woman: current status of treatment. AB - Complete response to chemotherapy treatment was achieved in an 86-year-old woman with extensive metastatic gastric carcinoma. Thirty months after the initiation of treatment, the patient continues to be in complete remission. Chemotherapy consisted of a modified FAM regimen (5 FU, mitomycin C, and doxorubicin) for 1 year. Current chemotherapy recommendations for gastric carcinoma as well as the medical, psychosocial, and ethical considerations for chemotherapy treatment in the elderly are reviewed. PMID- 3840328 TI - Chromosomal localization of the human elastin gene. AB - mRNA isolated from fetal human aorta was used to synthesize cDNA that was cloned into the PstI site of pBR322. The recombinant clones were screened with an authentic sheep elastin cDNA, and one human clone that hybridized strongly was isolated and characterized. The 421-base pair (bp) insert of this human clone was sequenced by the dideoxy method, and the DNA sequence showed strong homology to the nontranslated portion of the sheep elastin cDNA. This result unequivocally identified the human clone, designated pcHEL1, as an elastin clone. Plasmid pcHEL1 labeled with [3H] nucleotides was used in in situ hybridization experiments utilizing normal metaphase chromosomes and also with cells carrying a balanced translocation between chromosomes 1 and 2: 46,XY,t(1;2)(p36;q31). The results strongly suggest that the elastin gene is localized to the q31----qter region of chromosome 2. PMID- 3840330 TI - Chemotherapy exposure file. PMID- 3840329 TI - Normal mRNA content in a phosphoglycerate kinase variant with severe enzyme deficiency. AB - A phosphoglycerate kinase variant, PGK-Matsue, was associated with a severe enzyme deficiency, congenital nonspherocytic hemolytic anemia, and mental disorders. The variant enzyme exhibited a slower cathodal electrophoretic mobility and lower affinity toward the substrates. The enzyme activity in the variant's red cells, muscles, and fibroblasts was about 5% of that of normal cells. The content of mRNA in the variant fibroblasts was compared to that of normal cells by the semiquantitative dot hybridization method, and, more accurately, by the liquid hybridization method, using a human PGK cDNA as a probe. It was found that the mRNA level in the variant fibroblasts was comparable to that of normal fibroblasts. The results strongly suggest that the major cause of enzyme deficiency in PGK-Matsue is a seven- to 10-fold increase in the mutant enzyme degradation. PMID- 3840331 TI - CAMPS: computer-automated metacarpophalangeal profile system. AB - The metacarpophalangeal profile (MCP) pattern has been proven useful in describing individuals with genetic and nongenetic syndromes. However, the measurement of the 19 bone lengths is a tedious procedure requiring use of hand vernier calipers, detailed normative data to be looked up in extensive tables, hand calculator, and manual graphing techniques. Presently there are no reports of microcomputer-automated systems for the accurate measurement, recording, analysis, and graphing of MCP profiles. We describe a computer-automated metacarpophalangeal profile system (CAMPS) that will assist in the derivation of the MCP profile. This program allows the user to select different program routines that perform the functions necessary for MCP profile construction. The "data acquisition module" (DAM) assists in bone length measurement from contact prints of hand radiographs and stores the 19 measurements on a floppy disk. The "standardization analysis module" (SAM) then compares the 19 measurements to age- and sex-matched normal data and converts the raw data to z-score values. The "Pearson product-moment correlation module" (PPM) generates a correlation coefficient describing the degree of similarity between the two hands measured and graphically illustrates the resulting scatterplot. The "MCP plotting module" (MCPM) provides a graphic plot of the 19 bones in either transverse rows or phalangeal rays on a dot-matrix printer or X-Y plotter. PMID- 3840332 TI - The familial occurrence of lymphocytic thyroiditis in borzoi dogs. AB - A group of related borzoi dogs were studied over a 6-year period to ascertain the cause of primary hypothyroidism. Four generations of dogs were analyzed. Two littermates with lymphocytic thyroiditis were mated and the 10 offspring were all diagnosed, on the basis of thyroid biopsy evaluation, as having lymphocytic thyroiditis by age 2.5 years. A wide range of thyroid gland lesions was demonstrated in this litter of dogs. This report documents the occurrence of lymphocytic thyroiditis in three successive generations of an inbred group of borzoi dogs. An autosomal recessive mode of inheritance for the trait in this group of dogs is proposed. PMID- 3840333 TI - Amniotic fluid prolactin and fetal lung maturation. AB - Concentrations of prolactin in amniotic fluid, fetal plasma, and maternal plasma were determined in 34 rhesus monkeys delivered by hysterotomy under general anesthesia at gestational ages of 110 to 160 days (term, 165 days). Included were 15 cases (gestational ages 110 to 143 days) in which the mothers received 2 mg of betamethasone intramuscularly daily for 3 days prior to delivery. Fetal lung maximum volumes were determined in addition to the following indices of fetal lung surfactant: lung alveolar stability, lung phosphatidylcholine concentrations, lung extract surface tensions, and amniotic fluid lecithin to sphingomyelin ratios. Amniotic fluid prolactin was found to correlate significantly with lung alveolar stability (r = 0.51; p less than 0.01), lung phosphatidylcholine (r = 0.51; p less than 0.01), lung extract surface tension (r = -0.39, p less than 0.05) and amniotic fluid lecithin/sphingomyelin ratio (r = 0.50; p less than 0.01). These correlations remained statistically significant even when the effects of gestational age were taken into account. These findings suggest that amniotic fluid may modulate fetal production of surfactant via its prolactin content. PMID- 3840334 TI - Secondary surgical and neodymium-YAG laser discissions. AB - Between November 1978 and June 1984, 161 surgical and 102 neodymium-YAG laser discissions were performed. The incidence of discission in patients with a mean three-year follow-up after extracapsular surgery was 22.1% (39 of 176 eyes) after extracapsular cataract extraction alone and 14.5% (81 of 558 eyes) after extracapsular cataract extraction with intraocular lens implantation (P less than .02); the incidence was 25.5% (47 of 184 eyes) with the transiridectomy clip lens and 9.1% (33 of 364 eyes) with the posterior chamber lens (P less than .001). The average interval between cataract surgery and the discission was 2.4 years. The intraocular pressure was increased in 51% (48 eyes) of the eyes two to five hours after YAG laser discission and was unpredictable in most patients. After surgical discission, the intraocular pressure was increased on the first postoperative day in 13% (18 eyes) of the eyes. With surgical discission, significant complications included vitreous manipulation, wound leak, and intraocular inflammation. Intraocular lens pitting occurred in 20 patients undergoing YAG laser discission. Complications with both procedures included cystoid macular edema, retinal detachment, glaucoma, and closure of a previously adequate discission opening. PMID- 3840335 TI - Neuromuscular blockade in dystrophia myotonica with atracurium besylate. AB - The anaesthetic management of a young woman with dystrophia myotonica is described. The use of atracurium and monitoring of neuromuscular block allowed suxamethonium and neostigmine to be avoided, and thereby to reduce the risk of myotonic contractions. No adverse sequelae were observed. PMID- 3840336 TI - Delayed respiratory depression following repeated intrathecal low dose morphine. PMID- 3840337 TI - Organization of corticopontocerebellar connections to the paramedian lobule in the cat. AB - To reveal the organization and relative magnitude of connections from various parts of the cerebral cortex to the cerebellar paramedian lobule via the pontine nuclei, horseradish peroxidase conjugated to wheat germ agglutinin was injected in the paramedian lobule in conjunction with injection of the same tracer in various parts of the cerebral cortex in 14 cats. Termination areas of cortical fibres (anterogradely labelled) and pontine neurons projecting to the paramedian lobule (retrogradely labelled) were carefully plotted in serial sections through the pons. On the average 89% of all labelled cells were found in the pontine nuclei contralateral to the cerebellar injection, 11% in the ipsilateral pontine nuclei. The highest degree of overlap between anterograde and retrograde labelling was found after injections in the posterior sigmoid gyrus (SmI), while less overlap was found after injections of the anterior sigmoid gyrus (MsI). Injections of the second somatosensory area (SmII) and the parietal association cortex (areas 5 and 7) gave moderate degrees of overlap. Very little or no overlap was found after injections of the premotor cortex (area 6), the visual areas 17, 18 and 19 and the auditory cortex (AI and AII). It is concluded that a major cortical input to the paramedian lobule arises in the posterior sigmoid gyrus (SmI), but that additional contributions arise in the anterior sigmoid gyrus (MsI), the parietal areas 5 and 7 and the second somatosensory cortex (SmII). Among the latter regions probably the parietal areas contribute most. Overlap between terminal regions of cortical fibres and cells projecting to the paramedian lobule takes place at numerous discrete sites at virtually all rostrocaudal levels of the pons. Cerebrocortical afferents via the pontine nuclei to the intermediate zone of the posterior lobe are organized according to the same principles as described previously for cortical afferents to the hemispheral parts of the posterior lobe (crus I and II). PMID- 3840338 TI - Fentanyl pharmacokinetics and hemodynamic effects in preterm infants during ligation of patent ductus arteriosus. AB - A bolus of 30 micrograms X kg-1 fentanyl was given to nine preterm infants (gestational age 31.8 +/- 4.7 weeks, weight 1100 +/- 309 g) for induction of anesthesia for ligation of a patent ductus arteriosus. Thirty minutes after the injection, fentanyl plasma concentrations were between 7.7 and 13.6 ng X ml-1. Elimination half-life was 6-32 hr (mean +/- SD, 17.7 +/- 9.3). Systolic blood pressure remained stable throughout surgery. There was a gradual increase in heart rate from 159 +/- 12 min-1 at the time of skin incision to 173 +/- 15 min-1 at the time of skin closure (P less than 0.05). Fentanyl plasma concentrations remained virtually unchanged between 30 min (10.6 +/- 1.9 ng X ml-1) and 120 min (9.6 +/- 1.6 ng X ml-1); whereas at the end of surgery most infants moved and breathed spontaneously. This phenomenon can be explained by redistribution of fentanyl from brain into pharmacodynamically inert tissues. PMID- 3840339 TI - Distribution of morphine and meperidine after intrathecal administration in rat and mouse. AB - Morphine and meperidine distribution in the neuroaxis were studied in rats after intrathecal injection through catheters ending at the lumbar level. 14C-Morphine and 3H-meperidine were injected with pharmacologic doses of each drug. Radioactivity was measured in spinal cord segments at different times. At 14 min the segment with maximum morphine concentration (T11-12) contained 8.6 +/- 2.4 (mean +/- SD) pmol/mg, a value 215 times higher than would be observed if distribution in the body were homogeneous. The ratio between concentration in the most rostral segment (C3-4) and in the segment with maximal concentration was 0.21 +/- 0.10. At 14 min the segment with maximum meperidine concentration (T9 10) contained 161.4 +/- 33.9 pmol/mg wet tissue, a value 75 times higher than would be seen with even distribution in the body. The ratio (C3-4 vs. T9-10) was 0.10 +/- 0.04 at this time. The distribution of 14C-morphine in the whole central nervous system (CNS) was studied in mice by whole body autoradiography after intrathecal injections of 5 microliters at the L5-6 level. High levels of radioactivity were detected in the whole spinal cord and in brain regions close to the basal cisterns until 2 h after injection. At 4 h only the caudal part of the spinal cord had detectable levels of radioactivity. The per cent of the injected dose of morphine that was recovered from the spinal cord was 26.5 +/- 4.5 at 14 min, 19.9 +/- 8.8 at 44 min, and 4.5 +/- 1.7 at 179 min after injection.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840340 TI - Ultra-long-duration local anesthesia produced by injection of lecithin-coated methoxyflurane microdroplets. AB - This study was designed to evaluate a new drug delivery system. The authors undertook to determine if microdroplets prepared by encapsulating volatile anesthetics with a membrane of lecithin could be used for local anesthesia. Local anesthesia was determined by monitoring the response of the rat to tail clamping and electrical stimulation of the skin following the intradermal injection of the microdroplets. Microdroplets were prepared from isoflurane, enflurane, halothane, methoxyflurane, diethyl ether, chloroform, and heptane. Although all microdroplet preparations produced local anesthesia, only methoxyflurane microdroplets produced an ultra-long duration of local anesthesia (approximately 24 h). Further characterization of the methoxyflurane microdroplets revealed two important differences from conventional local anesthetics. First, the local anesthetic effect of methoxyflurane reached a plateau that did not change significantly for 20 h while the injection of lidocaine and bupivacaine resulted in a peak effect that returned to baseline within 1 and 3 h, respectively. Second, the anesthetic effect of methoxyflurane remained essentially localized to the site of injection, while the anesthetic effect of lidocaine and bupivacaine migrated 15 cm in less than 1 h. The toxicity and safety of methoxyflurane were evaluated. When administered over the dosage range 1-16% (v/v) intradermally, or by injections into muscle, or by repeat injections every 4 days for 16 days, all animals regained their pretreatment response to painful stimulations, and there was no evidence of gross injury to tissue. Deliberate intravenous injection of 0.8 ml of 6.7% (v/v) methoxyflurane microdroplets had no apparent anesthetic or toxic effect. The present study demonstrates that methoxyflurane microdroplets produce an anesthetic effect that is highly localized, stable in intensity, ultra-long in duration, and reversible. PMID- 3840342 TI - Mathematical model of geometry of the eye. AB - A computer program was written in order to construct a geometric model of the human eye, having as a base some subroutines from the SAP IV program designed by the University of California. It was written in Fortran. In order to generate the proposed geometry, it was necessary to divide the eye into three zones, each one corresponding to a plane geometric figure, since the human eye does not correspond to any one shape. When the three zones are joined together, they form an eyeball. PMID- 3840341 TI - Lymphocyte subpopulations in bronchoalveolar lavage fluid in asbestos workers. AB - We examined peripheral blood and bronchoalveolar lavage (BAL) fluid lymphocyte subpopulations in 29 asbestos workers, 10 with and 19 without clinical or radiologic evidence of asbestosis. Peripheral blood lymphocyte subpopulations were also measured in 13 control subjects. The mean OKT4:OKT8 (T-helper/inducer:T suppressor/cytotoxic lymphocyte) ratio in BAL fluid in the 29 asbestos workers was 0.96 (range, not detected to 3.33), significantly less than 1.76 (1.33 to 2.67) in peripheral blood (p less than 0.001). There were no significant differences in OKT4:OKT8 ratios in peripheral blood between the 10 patients with asbestosis, the 19 asbestos workers without asbestosis, and the 13 normal control subjects or in the OKT4:OKT8 ratios in BAL fluid between patients with asbestosis and asbestos workers without asbestosis. In the group as a whole, 83% of those who had suffered more than 5 yr of exposure to asbestos showed OKT4:OKT8 ratios less than 1.2, whereas in those who had suffered fewer than 5 yr of exposure, 80% showed ratios greater than 1.2 (p less than 0.02). No other relationships between OKT4:OKT8 ratios and clinical, radiographic, or physiologic variables were observed. PMID- 3840343 TI - [Natural and UV-induced variability of the producer of telavimycin Streptomyces levoris, Krass, strain 243]. AB - The experimental data showed that the morphological variation of the culture of strain 243 of Streptomyces levoris, Krass, producing telavimycin (antibiotic 243) resulted in the formation of three morphological types differing in some features from the initial culture. Cultures of the type I and II colonies were most promising for selection. Strains producing higher yields of the antibiotic as compared to the initial strain 243 were selected from these cultures. After exposure of the spores of strain 243-96 to UV light in a dose of 500 erg/mm2 a highly productive strain 243-197 was isolated. The activity of this strain is 51 per cent higher than that of strain 243-96. PMID- 3840344 TI - Reactions of lipoamide dehydrogenase and glutathione reductase with arsonic acids and arsonous acids. AB - Lipoamide dehydrogenase reacts irreversibly with arsonous acids, RAs(OH)2, and arsonic acids, RAs(O)(OH)2, to form enzyme-inhibitor complexes. The formation of inactive enzyme requires NADH and is kinetically first order in the presence of excess arsonous acid. The second-order rate constant for formation of the enzyme inhibitor complex was 545 min-1 M-1 for phenylarsonous acid, C6H5As(OH)2, and 5640 min-1 M-1 for methanearsonous acid, CH3As(OH)2. The kinetics of formation of inactive enzyme in the presence of arsonic acids was found to obey a rate law predicted by a two-step mechanism in which a rate-limiting reduction of an arsonic acid to the corresponding arsonous acid by reduced enzyme, E(SH)2, preceded formation of an inactive binary complex of reduced enzyme and arsonous acid: ES2 + NADH + H+ = E(SH)2 + NAD+; E(SH)2 + RAs(O)(OH)2 = ES2 + RAs(OH)2 + H2O; and E(SH)2 + RAs(OH)2 = ES2AsR + 2H2O. GSSG reductase reacts reversibly with C6H5As(OH)2 to form an inactive binary addition compound in the presence of NADPH. The value of the association constant for formation of enzyme inhibitor complex at pH 7.0 was 119 M-1. The initial rate of the GSSG reductase-catalyzed oxidation of NADPH by GSSG was insensitive to MeAs(OH)2. The kinetics of inhibition of GSSG reductase by arsenite and C6H5As(O)(OH)2 were found to obey the rate law described for lipoamide dehydrogenase and arsonic acids. GSSG reductase catalyzed the oxidation of NADPH by p-arsanilic acid. The initial rate of oxidation of NADPH was linearly dependent on enzyme concentration. The turnover number for GSSG reductase with p-arsanilic acid as an oxidant was 0.13 mol NADPH mol FAD-1 min-1. PMID- 3840345 TI - Effect of vitamin D deficiency on the composition and in vitro labeling of rat kidney proteins. AB - Densitometric analysis of single-dimension gels consistently demonstrated that, in addition to rat renal calcium binding protein (CaBP) (Mr 28,000), two other kidney proteins of Mr 16,500 and Mr 18,000 were significantly enriched in their contents in the vitamin D-replete rat. Partial characterization of the Mr 18,000 and 16,500 proteins revealed that these proteins were heat-stable and distinct from calmodulin, as determined by their inability to undergo the calcium dependent mobility shift in sodium dodecyl sulfate gels which is characteristic of calmodulin. The Mr 16,500 and Mr 18,000 kidney proteins did not cross-react with rat renal or rat intestinal CaBP antisera, as assessed by radioimmunoassay and Western blot analysis. A comparison of peptide maps of tryptic digests of these proteins and purified rat renal CaBP, as analyzed by high-pressure liquid chromatography, revealed no apparent homology. Protein synthesis studies using [35S]methionine and short-term tissue culture of kidney cortex fragments indicated that the most pronounced effect of vitamin D or 1,25 dihydroxyvitamin D3 was increased synthesis of the Mr 28,000 protein (3.2- to 4.6-fold increase compared to -D rats, P less than 0.001). Synthesis of a Mr 54,500 protein increased by 1.3- to 1.5-fold (P less than 0.05) and [35S]methionine incorporation into a Mr 66,000 protein decreased by 1.2- to 1.3-fold (P less than 0.05) in +D rats. This study represents the first detailed characterization of the effects of vitamin D on the composition and synthesis of rat kidney proteins. The data indicate that the most significant effect of vitamin D on kidney proteins is increased synthesis of the Mr 28,000 CaBP, suggesting that a major role of vitamin D in renal function is regulation of calcium transport at the distal tubule. However, dietary vitamin D or 1,25(OH)2D3 can influence the expression as well as the suppression of other specific kidney proteins. PMID- 3840346 TI - Regulation of mitochondrial compartment volumes in rat adrenal cortex by ether stress. AB - In vivo ether stress of rats causes release of pituitary adrenocorticotropin (ACTH) leading to activation of steroidogenesis in adrenal cortex mitochondria. The present studies show that this treatment also induces a decrease in the volume of the intermembrane space in isolated adrenal mitochondria. This decrease is accompanied by an increase in the volume of the matrix, thus leaving the total mitochondrial volume approximately constant. These effects are prevented by the protein synthesis inhibitor, cycloheximide, and are specific to the adrenal gland. The decrease in the intermembrane space (or increase in the matrix volume) is correlated with activation of the cholesterol side chain cleavage reaction (the regulated step in steroidogenesis). We propose as a working hypothesis that these changes reflect a hormonally regulated alteration in the relationship between the outer and inner mitochondrial membranes, which may facilitate the rate-limiting movement of cholesterol from the outer to the inner membrane where the side chain cleavage enzyme is located. PMID- 3840347 TI - Maternal autoimmune disease and the fetus. PMID- 3840348 TI - Oxygen free radical induced damage in kidneys subjected to warm ischemia and reperfusion. Protective effect of superoxide dismutase. AB - Superoxide anion free radical (O2-.) has been implicated in the pathogenesis of tissue injury consequent to ischemia/reperfusion in several different organs, including heart and bowel. Superoxide dismutase (SOD), an enzyme free radical scavenger specific for O2-., has been used successfully to protect these organs from structural damage during reoxygenation of ischemic tissue. It has been suggested that the catalytic action of xanthine oxidase in injured tissue is an important source of O2-. during reoxygenation. In order to evaluate the potential of SOD to protect against kidney damage resulting from transient ischemia followed by reperfusion with oxygenated blood, a model of warm renal ischemia was studied. LBNF1 rats underwent right nephrectomy and occlusion of the left renal artery for 45 minutes. Survival in the group of ischemic untreated rats (N = 30) was 56% at 7 days and serum creatinine was greatly elevated (p less than 0.01) in rats remaining alive over the full 7-day period. In strong contrast to these results, all of the animals treated with SOD before reperfusion (N = 18) were alive after 7 days similar to sham operated control rats (N = 8). Serum creatinine in the SOD treated rats was significantly elevated only to postoperative day 3 and thereafter returned to normal. Rats treated with inactive SOD (N = 4) or SOD before ischemia (N = 4) had decreased survival rates compared to ischemic untreated animals and prolonged elevation of serum creatinine. When the ischemia time was extended to 60 minutes, only 19% of the untreated animals (N = 16) survived at 7 days whereas nearly 60% of the SOD-treated animals survived (N = 19). Serum creatinine was greatly elevated during the full 7-day observation period in all surviving rats in the untreated ischemic group, whereas serum creatinine returned to normal (p less than 0.05) after 4 days in the surviving rats treated with SOD. To test whether the action of xanthine oxidase contributed to the kidney damage after reoxygenation, 45 min. ischemic rat kidneys were treated with allopurinol. All of the animals treated with allopurinol (N = 12) were alive at 7 days. Serum creatinine values returned to normal after the episode of ischemia and reperfusion but more slowly than after SOD treatment. Histologic evaluation of kidney tissue taken from animals after ischemia alone showed extensive renal tubular damage, which was essentially absent in kidneys from SOD-treated animals.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3840350 TI - BM 13.177 selectively inhibits endoperoxide analogue induced vascular contractions. AB - Experiments were performed to evaluate the effects of BM 13.177 on vascular smooth muscle. Rabbit femoral arteries were mounted for isometric tension recording and made to contract with the endoperoxide analogues U44064 and U46619, prostaglandin F2 alpha and E2, norepinephrine, serotonin, histamine and ATP in the absence and in the presence of BM 13.177. This compound (7 X 10(-5)M) inhibited contractions to the endoperoxide analogues and did not affect or slightly potentiated contractions induced with the other agonists except for those evoked with prostaglandin F2 alpha, which tended to be slightly inhibited. In 2 out of 5 unstimulated preparations tested, BM 13.177 at 7 X 10(-6) and 7 X 10(-5)M caused small contractions. It is suggested that BM 13.177 is a selective thromboxane A2 receptor antagonist in vascular smooth muscle. PMID- 3840349 TI - Thromboxane A2 moderates permeability after limb ischemia. AB - Reperfusion after limb ischemia results in muscle edema as well as excess secretion of thromboxane A2 (TxA2), an agent associated with permeability increase in other settings. This study tests whether TxA2 moderates the permeability following limb ischemia. A tourniquet inflated to 300 mmHg was applied for 2 hours around the hind limb of four groups of dogs. In untreated animals (N = 25), 2 hours following tourniquet release, plasma TxB2 values rose from 320 pg/ml to 2416 pg/ml (p less than 0.001), and popliteal lymph values rose from 378 pg/ml to 1046 pg/ml (p less than 0.001). Platelet TxB2 was unaltered and plasma 6-keto-PGF1 alpha levels did not vary. Following ischemia, lymph flow (QL) increased from 0.07 to 0.37 ml/h (p less than 0.05), while the lymph/plasma (L/P) protein ratio was unchanged at 0.41. These measurements indicate increased permeability since increase in hydrostatic pressure in a second group by tourniquet inflation to 50 mmHg (N = 7) led to a rise in QL from 0.07 to 0.22 ml/h, but a fall in the L/P ratio to 0.32, a value lower than the ischemic group (p less than 0.05). Pretreatment with the imidazole derivative ketoconazole (N = 11) reduced platelet Tx synthesis from 42 ng to 2 ng/10(9) platelets, but lymph TxB2 levels rose to 1703 pg/ml after ischemia, indicating an extravascular or vessel wall site of synthesis not inhibited by ketoconazole. Pretreatment with a lower molecular weight imidazole derivative OKY 046 (N = 9) inhibited all Tx synthesis after ischemia. Prior to tourniquet inflation, both OKY 046 and ketoconazole lowered plasma TxB2 levels as well as the L/P ratio (p less than 0.05). After ischemia, OKY 046, but not ketoconazole, maintained the L/P ratio at 0.33, a value below that of untreated animals (p less than 0.05). These results indicate that nonplatelet-derived TxA2 modulates both baseline and ischemia induced increases in microvascular permeability in the dog hind limb. PMID- 3840351 TI - [Determination of pharmacokinetic variables in veterinary medicine using a computer program]. PMID- 3840352 TI - [Morphological studies of the liver in retarded and stillborn piglets. 1. State of growth, structural maturity and metabolic activity]. PMID- 3840353 TI - Multicentric giant lymph node hyperplasia, Kaposi's sarcoma, and lymphoma. AB - We studied two cases of a recently recognized systemic lymphoproliferative disease with morphological features of Castleman's disease: multicentric giant lymph node hyperplasia. Both patients developed Kaposi's sarcoma and had laboratory evidence of immune abnormalities, including reversed T4 to T8 ratios. One patient's disease had a subacute course with fevers of unknown origin, mucocutaneous candidiasis, and progressive thrombocytopenia, while the other patient's disease had a fulminant course with anemia, thrombocytopenia, and splenic lymphoma. Both patients were elderly, and both died of complications of multicentric giant lymph node hyperplasia. PMID- 3840354 TI - Sensitivity of anti-Leu-M1 as a marker in Hodgkin's disease. AB - Seventy-eight cases of Hodgkin's disease (52 nodular sclerosis, 13 mixed cellularity, seven lymphocyte predominance, one lymphocyte depletion, one interfollicular, and four unclassified cases) were stained with anti-Leu-M1 using the immunoperoxidase technique on either formalin- or B-5-fixed, paraffin embedded sections. The cytoplasmic pattern and extent of staining of Reed Sternberg cells and mononuclear variants were recorded. Ninety-four percent of the cases had Leu-M1-positive cells. The staining intensity and number of positive cells were greatest in nodular sclerosis and least in lymphocyte predominance. There was variability, however, in the patterns and amounts of positivity for all subtypes. The neoplastic cells in 15 non-Hodgkin's lymphomas were uniformly negative for Leu-M1. For the individual case, lack of Leu-M1 positivity does not exclude Hodgkin's disease as a diagnostic possibility, but when adequate numbers of Reed-Sternberg-like cells are present, complete absence of staining suggests an alternative diagnosis. PMID- 3840355 TI - Essential mixed cryoglobulinemic glomerulonephritis associated with diabetic glomerulosclerosis. Light, immunofluorescence, and ultrastructural study of two cases. AB - The association of cryoglobulinemic glomerulonephritis with diabetic glomerulosclerosis is reported in two patients. Renal pathology was investigated by light and electron microscopy and by immunofluorescence on biopsy material from both patients and on autopsy material (obtained a few hours after death) from one patient. Glomerular involvement due to cryoglobulins preceded the development of diabetic glomerulosclerosis in one patient. This contrasts with what has been reported in the literature, where various types of glomerular lesions are reported to be superimposed on overt and often long-lasting diabetic glomerulopathy. Though the association may be coincidental, the immune complexes (cryoglobulins) may have accelerated the formation of the nodular hyaline diabetic lesions in the mesangium through a mesangiolytic process. PMID- 3840356 TI - Fatal Yersinia enterocolitica sepsis after blood transfusion. AB - A patient with fatal Yersinia enterocolitica sepsis was seen recently in our intensive care unit. The patient had received two units of packed red blood cells during a surgical procedure. Cultures of the donor blood yielded Y enterocolitica, and a whole-organism enzyme-linked immunosorbent assay of the donors' sera suggested a recent infection with Y enterocolitica in an asymptomatic donor. Though rare, Y enterocolitica, which can grow at the cold temperatures of refrigerated blood, should be considered as a possible source of sepsis following blood transfusion. PMID- 3840357 TI - Herpes simplex lymphadenitis. An unusual presentation with necrosis and viral particles. AB - An inguinal lymph node was excised from a 23-year-old woman. Histologic examination revealed necrotic foci with cytologic changes indicative of herpes simplex virus; immunohistochemistry and electron microscopy confirmed the presence of virus. Typical cutaneous lesions appeared on the vulva three days after surgery. Focally necrotizing lymphadenitis and cytologic changes of viral transformation are unusual in herpes group infections. PMID- 3840358 TI - Nevus cell aggregates associated with lymph nodes. Immunohistochemical observations. AB - Nevus cell aggregates occurring in association with axillary lymph nodes can be difficult to recognize and differentiate from a metastatic breast carcinoma. We believe S100-protein immunoreactivity, along with negative staining for keratin and epithelial membrane antigen, and typical geographic distribution of nevus cell aggregates in lymph nodes are helpful in providing an accurate diagnosis. PMID- 3840359 TI - Immunohistochemical localization and chromatographic characterization of human chorionic gonadotropin in a bladder carcinoma. AB - We describe a patient with advanced bladder carcinoma, in which ectopic synthesis and secretion of human chorionic gonadotropinlike immunoreactivity (ihCG) was demonstrated. Concanavalin A-sepharose affinity chromatography of serum revealed that the ihCG differed from placental human chorionic gonadotropin in its carbohydrate moiety. Treatment of the patient with a cisplatin-containing regimen did not result in regression of the tumor. Since immunohistochemistry revealed ihCG in five of 13 additional cases of bladder carcinoma, it is concluded that ectopic production of ihCG by bladder carcinomas is probably not rare. PMID- 3840360 TI - Infantile hematomyelia complicating electrocardioversion. PMID- 3840361 TI - Bacterial contamination is still a hazard of blood transfusion. PMID- 3840362 TI - The coexpression of distinct classes of intermediate filaments in human neoplasms. PMID- 3840363 TI - Hemosiderin deposition in the pancreas. AB - A histopathologic study on hemosiderin deposition in the pancreas was performed. This study included three patients with primary hemochromatosis and 25 patients with aplastic anemia who were receiving blood transfusions. In the three patients with primary hemochromatosis, hemosiderin deposition was present in the acinar tissue, interstitium, islets of Langerhans, and ductal epithelium but occurred predominantly in the acinar tissue. Fibrosis was also found in the interlobular and intralobular areas in a diffuse and irregular manner. A micronodular arrangement of the acinar tissue was present in the atrophic exocrine pancreas. In patients with aplastic anemia who were receiving blood transfusions, the distribution and the quantity of hemosiderin approximately increased in accordance with the volume of blood given. Atrophy of the acinar tissue, interstitial fibrosis, and micronodular formation in the exocrine pancreas occurred in those patients who received a large volume of blood. Therefore, micronodular formation in the exocrine pancreas was one of the characteristic findings in patients with primary hemochromatosis and in patients with aplastic anemia who had received blood transfusions over a long period. PMID- 3840364 TI - [The use of "fermosin" fodder yeast in a multigeneration experiment with hens. 2. The laying period]. AB - In a multi-generation experiment with 120 hens of the species White Leghorn per group kept in cages, the influence of 5%, 7.5% and 15% 'fermosinR' torula yeast in the ration of mixed feed on various performance parameters in the 364-day laying period was investigated under long-term toxicologic aspects. In all probability there is no indication of toxic influences. The compatibility of the biomass can be considered good provided the basic nutrition-physiologic demands are met. PMID- 3840366 TI - Neodymium-YAG laser sclerostomy in primates. AB - A one-stage sclerostomy procedure was performed "noninvasively" in four cynomolgus monkeys solely with the neodymium-YAG laser. The neodymium (Nd)-YAG laser was focused, for the most part, a few diopters behind the focus of the helium-neon aiming beam. This enabled optical breakdown to occur entirely within the sclera to produce a perforating micropuncture of the scleral tissue. Two monkeys were treated with higher energy (23 and 24 joules) and two were treated at lower energy levels (12 and 14 joules). An immediate reduction of intraocular pressure in the treated eye was associated with a significant increase in outflow facility. The sclerostomy remained patent for more than 180 days, as determined by tonography and histologic examination. Scanning electron microscopic examination of the cornea revealed no significant damage to the central cornea or to tissue adjacent to the visual axis in any of the treated eyes. However, there was some endothelial cell loss at the site of the laser treatment at the peripheral cornea and in the area immediately posterior to the incision; there was also a focal break in Descemet's membrane. PMID- 3840365 TI - The role of the vitreous in the intraocular pressure rise after neodymium-YAG laser capsulotomy. AB - Autologous liquid vitreous injected into the anterior chamber of the phakic owl monkey eye leads to markedly increased intraocular pressure (IOP) peaking at one to two hours. In contrast, neodymium-YAG laser shock waves focused in the center of the anterior chamber of the same animal led to a mild decrease in IOP. Debris produced by laser pulses focused on the residual cortex of owl monkey eyes that had undergone extracapsular surgery failed to increase the IOP. Similarly, injection of dialyzed vitreous did not have any significant influence on IOP. We conclude that the disruption of the integrity of the anterior cortical gel and the subsequent release of a dialyzable intravitreal substance with a molecular weight of less than 10,000 daltons into the anterior chamber may contribute to the IOP rise after surgical discission, including neodymium-YAG laser posterior capsulotomy. PMID- 3840367 TI - In situ actin distribution in excised retrolental membranes in retinopathy of prematurity. AB - Actin, an intracellular contractile protein, is associated with cell movements in both muscle and nonmuscle tissues. Using the fluorescent derivative of the mushroom toxin, phallacidin, which specifically binds to polymerized (filamentous) actin, we demonstrated the distribution of actin in retrolental membranes excised during open-sky vitrectomy from six infants with leukokoria due to retrolental fibroplasia. Actin was detected in ubiquitous linear bundles, which is consistent with the existence of contractile forces. Actin was also concentrated in the cortical cytoplasm of cells, thus outlining the plasma membranes. Transmission electron microscopy has identified many of these cells to be myofibroblastlike in appearance. Myofibroblasts are known to contract like smooth-muscle cells and have been reported as the putative causal factor in the contraction of scars and transvitreal membranes. PMID- 3840368 TI - The questionable relation between cochlear pigmentation and noise-induced hearing loss. AB - Some evidence has suggested that susceptibility to noise-induced hearing loss may be inversely proportional to the amount of melanin in the cochlea. However, published data have not been consistent in demonstrating this relation, and some results may be contaminated by lack of genetic control in experimental animals. In this investigation, noise-induced hearing loss was evaluated in pigmented and albino C57BL/6J mice that differed only in their ability to produce melanin. Surface-recorded electric responses to sound were used to assess auditory sensitivity. Results indicated no difference between the two groups either in pre exposure thresholds or in magnitude of noise-induced threshold shift. PMID- 3840369 TI - Assignment of Lap-1 to linkage group I of the rat (Rattus norvegicus). AB - Genetic analysis of backcross progeny from previously characterized rat inbred strains revealed that the biochemical marker Lap-1 is localized in linkage group I (LG I). Lap-1 codes for leucine arylaminopeptidase (EC 3.4.11). The distances of Lap-1 to c, RT6, and Hbb, based on recombination frequencies, are 3.1 +/- 1.5, 8.3 +/- 4.0, and 11.4 +/- 2.8 cM, respectively. Acon-1 codes for aconitase (EC 4.2.1.3). The calculated distances of Acon-1 to c and Hbb are 30.1 +/- 5.0 and 36.1 +/- 5.3 cM, respectively. This suggests that Acon-1 is also in LG I, but the observed high frequency of double crossovers requires further confirmation of this linkage. Ahd-2, Es-6, and Gdc-1 are linked neither to markers of LG I nor to one another. PMID- 3840371 TI - Human ApoB-100 gene resides in the p23----pter region of chromosome 2. AB - Human apolipoprotein (apo) B-100 is the major apolipoprotein of low density lipoproteins (LDL) and the principal ligand for interaction with the LDL receptor. The gene for apoB-100 has been localized to the p23----pter region of chromosome 2 by filter hybridization analysis with radiolabelled apoB-100 cDNA probes and human-mouse somatic cell hybrids containing chromosome 2 translocations. Other genes at the end of the short arm of chromosome 2 include acid phosphatase, proopiomelanocortin complex, malate dehydrogenase, and N-myc, the latter gene has been previously localized to the same bands (2p23----pter) as the apoB-100 gene. The localization of the apoB-100 gene to the p23----pter region of chromosome 2 completes the genomic organizational relationship of the LDL receptor and the two apolipoprotein ligands for the LDL receptor, apoE and apoB-100; the LDL receptor and apoE having been previously localized to chromosome 19. PMID- 3840370 TI - Molecular cloning and characterization of the cDNA coding for C4b-binding protein, a regulatory protein of the classical pathway of the human complement system. AB - By using synthetic oligonucleotides as probes, plasmid clones containing portions of cDNA coding for human C4b-binding protein were isolated from a liver cDNA library. The entire amino acid sequence of the C4b-binding protein can be predicted from this study of the cloned cDNA when allied to a previous sequence study at the protein level [Chung, Gagnon & Reid (1985) Mol. Immunol. 22, 427 435], in which over 55% of the amino acid sequence, including the N-terminal 62 residues, was obtained. The plasmid clones isolated allowed the unambiguous determination of 1717 nucleotides of cDNA sequence between the codon for the 32nd amino acid in the sequence of C4b-binding protein and the 164th nucleotide in the 3' non-translated region. The sequence studies show that the secreted form of C4b binding protein, found in plasma, is composed of chains of apparent Mr 70 000 that contains 549 amino acid residues. Examination of the protein and cDNA sequence results show that there are at least two polymorphic sites in the molecule. One is at position 44, which can be glutamine or threonine, and the other is at position 309, which can be tyrosine or histidine. Northern-blot analysis indicated that the mRNA for C4b-binding protein is approx. 2.5 kilobases long. The N-terminal 491 amino acids of C4b-binding protein can be divided into eight internal homologous regions, each approx. 60 amino acids long, which can be aligned by the presence in each region of four half-cystine, one tryptophan and several other conserved residues. These regions in C4b-binding protein are homologous with the three internal-homology regions that have been reported to be present within the Ba region of the complement enzyme factor B and also to the internal-homology regions found in the non-complement beta 2-glycoprotein I. PMID- 3840372 TI - Comparison of sulfide oxygenation mechanism for liver microsomal FAD-containing monooxygenase with that for cytochrome P-450. AB - Mechanistic mode for the oxygenation of sulfides with the pig liver microsomal FAD-containing monooxygenase(EC 1.14.13.8) has been conveniently distinguished from that with the phenobarbital induced liver microsomal cytochrome P-450 by analyzing products of the oxygenation of phenacyl phenyl sulfide. Upon oxygenation of phenacyl phenyl sulfide, the FAD-containing monooxygenase gave solely phenacyl phenyl sulfoxide in contrast to the cytochrome P-450 promoted oxygenation which is known to give substantial amounts of C-S bond fission products. The observation suggests that the oxygenation of sulfide with FAD containing monooxygenase involves the nucleophilic attack of the divalent sulfur on the reactive oxygen atom involved at the enzyme active site, namely electrophilic oxygenation of sulfide, though the oxygenation with the cytochrome P-450 is initiated by a single electron transfer from the sulfide to the enzyme active species. PMID- 3840373 TI - Complementarity between ferritin H mRNA and 28 S ribosomal RNA. AB - We have found an interesting complementarity in sequences of human ferritin H mRNA and 28 S ribosomal RNA. Immediately upstream of the initiating AUG in the ferritin mRNA is a stretch of 67 nucleotides which contains sequences complementary to several regions in 28 S RNA. One such region can form 55 base pairings with the 5' noncoding region of the ferritin H mRNA. Most of the complementarity is due to repeats of CCG in the ferritin mRNA and GGC in the ribosomal RNA. The regions of complementarity in the 28 S RNA appear to be expansion sequences that have arisen in the evolution of eukaryotic ribosomal RNA. We suggest that interaction of ferritin mRNA and 28 S RNA may function to regulate the stability and/or translatability of ferritin mRNA. PMID- 3840374 TI - Induction of fatty acid beta-oxidation and peroxisome proliferation in the liver of rhesus monkeys by DL-040, a new hypolipidemic agent. AB - Many structurally unrelated hypolipidemic agents and certain phthalate-ester plasticizers induce hepatomegaly and proliferation of peroxisomes in liver parenchymal cells of rodents, but there is relatively limited evidence regarding the ability of such compounds to induce peroxisome proliferation in the livers of nonrodent species including man. The present study was designed to determine if DL-040 (4-(((1,3-benzodioxol)-5-yl)methyl)amino-benzoic acid), a newly developed hypolipidemic agent, induces peroxisome proliferation in the liver of adult rhesus monkeys. Feeding of DL-040 (300 mg/kg body wt for 1 week; and 400 mg/kg body wt for 10 weeks) caused a significant increase in peroxisome population as determined by ultrastructural and morphometric analyses. The DL-040-induced peroxisome proliferation was accompanied by increases in the levels of catalase, carnitine acetyltransferase and the peroxisomal fatty acid beta-oxidation system. As expected, DL-040 caused a significant reduction of serum cholesterol and low density lipoprotein content. These data suggest that hepatic peroxisome proliferation is inducible in nonhuman primates at dose levels that exceed therapeutic levels. PMID- 3840375 TI - Effect of tamoxifen, a nonsteroidal antiestrogen, on phospholipid/calcium dependent protein kinase and phosphorylation of its endogenous substrate proteins from the rat brain and ovary. AB - Antiestrogens (tamoxifen, clomiphene and nafoxidine) were found to inhibit phospholipid/Ca2+-dependent protein kinase (PL/Ca-PK, or protein kinase C), whereas estrogens (estradiol and diethylstilbesterol) and the weakly estrogenic chlorotrianisene were inactive. Kinetic analysis indicated that the antiestrogens inhibited PL/Ca-PK competitively with respect to phosphatidylserine (Ki = 16-27 microM), but non-competitively with Ca2+ (Ki = 14-30 microM). Tamoxifen, but not diethylstilbesterol, also inhibited the phospholipid/Ca2+-dependent phosphorylation of various endogenous proteins from the total, solubilized fraction of the rat brain and ovary. Myosin light chain kinase, a calmodulin/Ca2+ dependent class of protein kinase, was similarly inhibited by tamoxifen; the drug, however, was without effect on cyclic AMP-dependent and cyclic GMP dependent protein kinases. It is suggested that PL/Ca-PK, by virtue of the hydrophobic interactions required for the enzyme activation, may represent a potential site of action for the lipophilic antiestrogens, in addition to the commonly recognized intracellular estrogen receptors. PMID- 3840376 TI - Developing computer model for analysis of human cold tolerance. PMID- 3840377 TI - [Serum levels of phenobarbital in the newborn infant using different doses calculated for obtaining a predetermined level]. PMID- 3840378 TI - Bone resorption in vitro: activating effect of factors synthetized by bone cells in organ culture. PMID- 3840379 TI - Metabolic bone disease with and without osteomalacia after intestinal bypass surgery: a bone histomorphometric study. AB - We performed iliac bone histomorphometry after in vivo double tetracycline labeling 3-14 years after intestinal bypass surgery for obesity in 21 patients, selected because of clinical suspicion of metabolic bone disease, and compared the results with those of 40 age-matched normal control subjects. Osteomalacia defined by rigorous kinetic criteria was found in six cases, histologic features of secondary hyperparathyroidism without significantly impaired mineralization in one case, and possible osteomalacia masked by impaired matrix synthesis in one case. In the patients with definite osteomalacia, nonfracture bone pain was more frequent, corrected plasma calcium lower, plasma alkaline phosphatase and magnesium higher, and secondary hyperparathyroidism more severe than in the other patients. In the patients without osteomalacia there was a 24.5% reduction in trabecular bone volume compared to the controls; in contrast to age-related bone loss and post-menopausal osteoporosis, this was due mainly to reduction in the thickness rather than the density of trabecular plates. About two-thirds of the reduction in trabecular thickness was due to reduction in interstitial bone thickness, representing the cumulative effect of increased depth of osteoclastic resorption cavities, probably due in part to secondary hyperparathyroidism. About one-third of the reduction in trabecular thickness was the result of reduced mean wall thickness, representing insufficient osteoblastic matrix synthesis, probably due in part to malabsorption of an unidentified nutrient necessary for normal bone health. Resorption indices were not increased at the time of the biopsy, but there were persistent defects in the recruitment and activity of osteoblasts. Clinically significant bone loss after intestinal shunt surgery, as in several other clinical situations, results from the combined effects of an unsustained increase in bone resorption and a sustained decrease in bone formation. PMID- 3840380 TI - Effect of renal failure on laudanosine excretion in man. AB - Patients with renal failure and undergoing a cadaver renal transplant were found to have plasma concentrations of laudanosine, following the administration of a single bolus dose of atracurium 0.5 mg kg-1, higher than those found in patients without renal failure. Since laudanosine is a known central nervous system stimulant in a variety of animal species, its actions should be investigated further in man, and particularly in patients with renal failure. PMID- 3840381 TI - A comparison of atracurium and alcuronium during halothane anaesthesia by measurement of the train-of-four response of the adductor pollicis muscle and clinical observation. AB - Atracurium and alcuronium have been compared during halothane anaesthesia, by measurement of the mechanical response of the adductor pollicis muscles to train of-four stimulation and by clinical observation. Atracurium appeared significantly shorter-acting than alcuronium. However, results suggested that the action of alcuronium may not be of "medium duration". A comparison of three indices of muscle twitch response to the train-of-four nerve stimulation, seemed to indicate that the D'/D ratio gave the best overall index of neuromuscular blockade in this study. PMID- 3840382 TI - In vitro degradation of atracurium in human plasma. AB - The degradation of atracurium and the formation of laudanosine was examined in vitro in both Sorensen buffer and human plasma using sensitive, specific high pressure liquid chromatographic assays to determine drug concentrations. At normal physiological pH and temperature, the degradation of atracurium was threefold more rapid in plasma than in buffer. Laudanosine is the major end product of atracurium degradation in buffer or in plasma; its production is more rapid in plasma than in buffer. Dilution of plasma constituents or the use of diisopropylfluorophosphate (a potent esterase inhibitor), slows the degradation of atracurium and the production of laudanosine. We conclude that, although ester hydrolysis is the major metabolic pathway of atracurium degradation, Hofmann elimination provides a "safety net" in its clinical use. PMID- 3840383 TI - Dystrophia myotonica and atracurium. A case report. AB - Atracurium was used to produce neuromuscular blockade in a patient with dystrophia myotonica. Operating conditions were excellent and myotonia was not seen. Sensitivity to atracurium was not seen and spontaneous recovery was not prolonged. PMID- 3840384 TI - The progestogen-only pill. PMID- 3840385 TI - Angle closure following neodymium-YAG(Nd YAG) laser capsulotomy in the aphakic eye. PMID- 3840386 TI - Calorimetric and fluorescence characterization of interactions between enkephalins and liposomal and synaptic plasma membranes containing gangliosides. AB - The interactions of the opioid peptide [D-Ala2]methionine-enkephalinamide with dipalmitoylphosphatidylcholine (DPPC) large unilamellar vesicles containing gangliosides GM1, Gd1a, and Gt1b and synaptic plasma membranes selectively enriched with dimyristoylphosphatidylcholine (DMPC) and ganglioside Gd1a have been investigated by using high-sensitivity differential scanning calorimetry. In the absence of gangliosides, the addition of enkephalinamide in concentrations of up to 10(-3) M does not induce any appreciable change in the heat capacity function of DPPC. In the presence of gangliosides, however, changes in the heat capacity function were observed with as little as micromolar concentrations of the enkephalinamide; the same is true for DMPC-Gd1a-enriched synaptic membranes. The magnitude and the nature of the enkephalinamide effect depend on the type of ganglioside studied. For DPPC vesicles containing ganglioside GM1 only a slight broadening in the heat capacity function and a small upward shift in the transition temperature were observed. For DPPC vesicles containing ganglioside Gd1a the effect was more dramatic; enkephalinamide concentrations as low as 10( 5) M caused the appearance of two well-defined peaks in the heat capacity function in contrast to the one peak observed in the absence of enkephalinamide. In the case of DPPC vesicles containing ganglioside Gt1b the enkephalinamide effect was seen at concentrations of 10(-4) M or higher. Synaptic plasma membranes were isolated from bovine brain, selectively enriched with exogenous lipid, and their thermotropic behavior was characterized by steady-state fluorescence spectroscopy and differential scanning calorimetry. This lipid enrichment results in the appearance of a membrane phase transition otherwise absent in the intact membrane preparation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840387 TI - Effects of hydrostatic pressure on the molecular structure and endothermic phase transitions of phosphatidylcholine bilayers: a Raman scattering study. AB - The temperature dependences of the Raman spectra of aqueous dispersions of 1,2 dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and 1,2-dimyristoyl-sn-glycero-3 phosphocholine (DMPC) were monitored at different but constant pressures between 1 and 1210 bar. The changes observed in these Raman spectra are discussed in terms of the effects of high pressure on the phase state and molecular structure of lipid bilayers. It is demonstrated that the temperature of the endothermic gel to liquid-crystal phase transition, as well as the temperature of the pretransition, increases linearly with increasing hydrostatic pressure. The dTm/dP values obtained from a wide range of pressures are 20.8 degrees C X kbar-1 for DPPC and 20.1 degrees C X kbar-1 for DMPC. The dTp/dP value for DPPC is 16.2 degrees C X kbar-1. It is also shown that the volume change that occurs at the gel to liquid-crystal transition is not constant; i.e., d delta Vm/dP decreases by 6.2% (DPPC) or 6.3% (DMPC) per kilobar pressure. The volume change at the pretransition is also pressure dependent; the d delta Vp/dP value of DPPC decreases by 4.7% per kilobar pressure. PMID- 3840388 TI - A Raman spectroscopic study on the effect of cholesterol on lipid packing in diether phosphatidylcholine bilayer dispersions. AB - For assessing lipid-sterol packing characteristics in model membrane systems, the vibrational Raman spectra of 1,2-di-O-hexadecyl-sn-glycero-3-phosphocholine (DHPC) multilamellar dispersions containing 18 mol% cholesterol were examined. The thermotropic behavior of the pure diether- and cholesterol-containing bilayers were studied in both the C-H stretching (2800-3100 cm-1) and C-C stretching (1000-1200 cm-1) mode regions, spectral intervals reflecting intermolecular and intramolecular order/disorder characteristics. Pure DHPC bilayers exhibit the pretransition and gel to liquid-crystalline phase transition temperatures at approx. 31 and 42.8 degrees C, respectively. In contrast to the temperature behavior of dipalmitoylphosphatidylcholine-cholesterol bilayers in which the primary phase transition Tm, is simply broadened, Tm is increased to approx. 49.6 degrees C in the DHPC (diether PC) liposomes containing 18 mol% cholesterol. As in the saturated chain diacyl-cholesterol bilayer systems, the sterol disorders the DHPC gel phase and eliminates the pretransition, while ordering the liquid-crystalline phase. Pure diether liposomes exhibit a headgroup dehydration effect as the multilamellar dispersions are cycled slowly over a temperature range including the gel and liquid-crystalline forms. That is, on multiple passages through the phase transitions, both the gel and liquid crystalline bilayer forms assume an increased hydrocarbon chain order. In the cholesterol-containing diether bilayers, only the disordered intra- and interchain states are formed. PMID- 3840389 TI - Reutilization of surfactant phosphatidylcholine in adult rabbits. AB - 32P-saturated phosphatidylcholine was added to [3H]choline-labeled natural surfactant and the mixture was injected intratracheally into 87 adult rabbits. The rabbits were also given [14C]palmitate intravenously at the same time. Rabbits were killed in groups from 10 min to 72 h after injection. In each rabbit we measured the total recovered [3H]phosphatidylcholine (PC) in the alveolar wash, the ratio of [3H]PC to [32P]PC in the alveolar wash, and the specific activity of [14C]PC in the alveolar wash and lamellar bodies. Values were averaged for all rabbits killed at the same times and smooth curves were fit to the data by computer. From the intravenous [14C]palmitate data we calculated a turnover time for alveolar PC of 6.0 h. From the intratracheal labeling data, we calculated a turnover time for alveolar PC of 5.7 h and determined that alveolar PC was reutilized at an efficiency of only 23%. We also concluded that this reutilization occurred as intact molecules. PMID- 3840390 TI - Quantitation of a mass action of dopaminergic neurones regulating temporal damping of linear electrocortical waves. AB - We have previously proposed that electrocortical waves are linear waves, subject to regulation by mesotelencephalic dopaminergic neurones. As a further means to test this theory, selective unilateral lesions of varying extent were made in the nucleii of origin of the dopaminergic mesotelencephalic tract. Changes in the electrocortical power spectrum were assessed by a repeated measure, between hemispheres comparison of ratio changes in power. With increasing unilateral dopamine cell damage, the animals showed increasing contralateral sensorimotor neglect. Curve fitting the ratio changes in power attributable to lesion, showed that estimates of the power of driving signals and the temporal damping moved in reverse directions with increasing extent of lesion, as expected from the theory. A further test was undertaken, to determine whether equal estimates for a transformation of surface signals were obtained from each side. Equality would not be expected if the equation for relative power were invalid. Left and right equality was found for three grades of unilateral lesion. PMID- 3840391 TI - Contributions of the fetoplacental unit to augmented uterine prostaglandin levels periparturition in the rat. AB - The purpose of the present study was to determine if the acute alterations in uterine prostanoid levels at the end of pregnancy are influenced locally by the fetoplacental unit (FPU). Unilaterally pregnant rats were killed on Days 20 and 21 of pregnancy (delivery = Day 21.5) and uterine tissue was removed and analyzed for prostaglandin (PG) E, PGF, thromboxane B2 (TxB2), and 6-keto-PGF1 alpha (6KF) by radioimmunoassay. A significant (P less than 0.05) main effect of Day (20 vs. 21) and Uterine Horn (nonpregnant vs. pregnant), but no interaction for PGE, PGF, and TxB2 was detected. In contrast, a significant interaction (P less than 0.05) of Day with Uterine Horn was found for uterine 6KF levels. Examination of the simple main effects indicated an enhanced level (P less than 0.05) of 6KF in uterine tissue adjacent compared to opposite the FPU at Days 20 and 21. However, uterine 6KF levels in the nonpregnant, but not pregnant, uterine horn were greater at Day 21 compared to Day 20 of pregnancy. The lack of a significant interaction of the main effects for PGE, PGF, and TxB2 suggests that the increased levels of these PGs between Days 20 and 21 were proportional in the nonpregnant and pregnant uterine horn. Therefore, the factor(s) responsible for the augmentation in these uterine PG levels between Days 20 and 21 is(are) most likely arriving via systemic circulation. In addition, the proportionate increases in uterine PGs imply that the FPU is not conferring upon adjacent uterine tissue any unique ability to respond to systemic factors.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840392 TI - Scanning electron microscopy of chronically stimulated platinum intracochlear electrodes. AB - Platinum electrodes were examined for evidence of corrosion using a scanning electron microscope (SEM). In vivo electrodes, stimulated using charge-balanced biphasic pulses for periods of up to 2000 h at charge densities of 0.18-0.32 microC mm-2 geom. per phase, were compared with in vitro electrodes stimulated in inorganic saline using similar stimulus parameters, and with in vivo control electrodes. The in vitro stimulated electrodes showed evidence of platinum corrosion at high charge density and aggregate charge injection. Significantly, the in vivo stimulated electrodes showed no evidence of stimulus induced corrosion. Indeed, their surfaces were similar to the in vivo control electrodes. In vitro electrochemical studies have demonstrated that proteins play a significant role in the inhibition of platinum dissolution: the present study has demonstrated an inhibitory effect in vivo. This may be due to the presence of proteins. PMID- 3840393 TI - Computer simulation of flagellar movement. VI. Simple curvature-controlled models are incompletely specified. AB - Computer simulation is used to examine a simple flagellar model that will initiate and propagate bending waves in the absence of viscous resistances. The model contains only an elastic bending resistance and an active sliding mechanism that generates reduced active shear moment with increasing sliding velocity. Oscillation results from a distributed control mechanism that reverses the direction of operation of the active sliding mechanism when the curvature reaches critical magnitudes in either direction. Bend propagation by curvature-controlled flagellar models therefore does not require interaction with the viscous resistance of an external fluid. An analytical examination of moment balance during bend propagation by this model yields a solution curve giving values of frequency and wavelength that satisfy the moment balance equation and give uniform bend propagation, suggesting that the model is underdetermined. At 0 viscosity, the boundary condition of 0 shear rate at the basal end of the flagellum during the development of new bends selects the particular solution that is obtained by computer simulations. Therefore, the details of the pattern of bend initiation at the basal end of a flagellum can be of major significance in determining the properties of propagated bending waves in the distal portion of a flagellum. At high values of external viscosity, the model oscillates at frequencies and wavelengths that give approximately integral numbers of waves on the flagellum. These operating points are selected because they facilitate the balance of bending moments at the ends of the model, where the external viscous moment approaches 0. These mode preferences can be overridden by forcing the model to operate at a predetermined frequency. The strong mode preferences shown by curvature-controlled flagellar models, in contrast to the weak or absent mode preferences shown by real flagella, therefore do not demonstrate the inapplicability of the moment-balance approach to real flagella. Instead, they indicate a need to specify additional properties of real flagella that are responsible for selecting particular operating points. PMID- 3840394 TI - Central nervous system leukemia in children with acute nonlymphoblastic leukemia. AB - Factors contributing to the development of central nervous system (CNS) leukemia, and the impact of leukemic involvement of this site on subsequent remission length, were determined in 184 children with acute nonlymphoblastic leukemia who had been treated in two successive clinical trials. Preventive CNS therapy in both studies consisted of intrathecal methotrexate (12 mg/m2) given monthly during the first six months of therapy and then every three months until all treatment was stopped. Children with CNS leukemia at diagnosis or relapse were given intrathecal chemotherapy weekly for four weeks and then monthly throughout the remainder of the treatment course. Those continuing in complete remission received 2,400 rad cranial irradiation plus five doses of intrathecal methotrexate before cessation of therapy. The 38 children (20.7%) with CNS leukemia at diagnosis were more likely to have an initial leukocyte count greater than or equal to 25 X 10(9)/L (P = .01) and age less than 2 years (P = .03). The presence of CNS leukemia at diagnosis did not adversely affect the remission induction rate (P = .13) or the length of complete remissions (P = .73). CNS relapse ended initial remissions in 11 patients only and did not preclude subsequent long-term survival, as four of these children are off therapy and in second complete remission for 33+ to 78+ months. Three features at diagnosis were predictive of CNS relapse: monocytic or myelomonocytic leukemia (P = .002); age less than 2 years (P = .0001); and leukocyte count greater than or equal to 25 X 10(9)/L (P = .012). By stepwise Cox regression analysis, each factor was found to have independent predictive value. Despite the apparent effectiveness of intrathecal methotrexate as preventive CNS treatment, our findings indicate that more effective prophylaxis is needed for patients with features predisposing to CNS relapse. PMID- 3840395 TI - A novel treatment of childhood lymphoblastic non-Hodgkin's lymphoma: early and intermittent use of teniposide plus cytarabine. AB - We treated 24 children and adolescents with stage III or IV lymphoblastic non Hodgkin's lymphoma, using a protocol designed for patients with poor-prognosis acute lymphoblastic leukemia (ALL). Early therapy consisted of teniposide plus cytarabine administered before and immediately after prednisone, vincristine, and asparaginase. The two-drug combination was also given intermittently with continuous 6-mercaptopurine and methotrexate during the first year of continuation chemotherapy. Periodic intrathecal methotrexate and delayed cranial irradiation were used to prevent central nervous system involvement. Anthracycline compounds, alkylating agents, high-dose methotrexate, and involved field irradiation were not used in any phase of treatment. Twenty-two (96%) of the 23 evaluable patients achieved complete remission. With a median follow-up of 2 1/2 years, only four patients have relapsed; the remainder have been disease free for eight months to more than five years. The projected four-year continuous complete remission rate is 73% for all patients and 79% for the 19 with mediastinal involvement at diagnosis. These results demonstrate that use of teniposide plus cytarabine with an otherwise conventional plan of ALL therapy is an effective approach to the treatment of childhood lymphoblastic lymphoma. PMID- 3840396 TI - Experimental testing of Mackay's model for functional antagonism in the isolated costo-uterus of the rat. AB - Several key predictions of a recently developed model for functional antagonism (Mackay, 1981) were experimentally tested using the rat isolated costo-uterine preparation. In the presence of the functional antagonist fenoterol (Fen), the functional constants (KAF) for carbachol and oxotremorine (Oxo) were respectively 9.9 and 3.4 fold greater than their corresponding affinity constants (KA). According to Mackay's model for functional antagonism, the higher KAF/KA ratio for carbachol indicates that this cholinoceptor agonist has a greater efficacy than Oxo. This was confirmed by using conventional pharmacological methods. As predicted from the model of functional antagonism, the plot of KAF/KA-1 against the fraction of cholinoceptors not irreversibly blocked by phenoxybenzamine (Pbz) was linear for both carbachol and Oxo and the lines of best fit crossed the axes at a point not significantly different from the origin. The value of 4.6 for the relative efficacy of carbachol to Oxo estimated from functional antagonism studies was comparable to the value of 5.6 calculated using the method of irreversible antagonism proposed by Furchgott (1966). PMID- 3840397 TI - AH23848, a thromboxane antagonist, suppresses ischaemia and reperfusion-induced arrhythmias in anaesthetized greyhounds. AB - The effects of the thromboxane antagonist AH23848 (1 mg kg-1 i.v.) were examined in anaesthetized greyhounds prepared for occlusion of the left anterior descending coronary artery with subsequent reperfusion after 40 min of myocardial ischaemia. Pretreatment with AH23848 30 min before coronary artery occlusion reduced the number of ischaemia-induced extrasystoles to 339 +/- 111 compared with 736 +/- 153 in the control group. The incidence of ventricular fibrillation following reperfusion was also markedly reduced; 25% compared with 88% in the controls. Late intervention with AH23848, 25 min after the onset of myocardial ischaemia did not significantly alter the incidence of reperfusion-induced ventricular fibrillation; 70% of the control group died and 60% of those that received AH23848. The ischaemia-induced release of thromboxane A2 and prostacyclin was not altered by pretreatment with AH23848. The results suggest that blockade of thromboxane receptors before myocardial ischaemia is an effective antiarrhythmic strategy in this model. PMID- 3840398 TI - Cross-species embryonic septal transplants: restoration of conditioned learning behavior. AB - Embryonic septal and hippocampal tissue from mice was transplanted between species into the brains of adult rat hosts as cell suspensions. Deficits in the ability to learn a conditioned, hippocampally mediated, forced alternation behavior, which were caused by a bilateral transection of the fornix-fimbria pathway, were ameliorated in the septal transplant recipients. The successful performance of the task was correlated to the density index of acetylcholinesterase in the hippocampal section. PMID- 3840399 TI - Effects of bilateral ibotenate-induced lesions of the nucleus basalis magnocellularis upon selective cholinergic biochemical markers in the rat anterior cerebral cortex. AB - The relationship of choline acetyltransferase (ChAT) activity and high affinity binding of the potent and selective sodium-dependent choline uptake inhibitor [3H]hemicholinium-3 ([3H]HC-3) to high-affinity binding of the muscarinic agonist [3H](+)-cis-methyldioxolane ([3H](+)CD), the putative M1 selective antagonist [3H]pirenzepine ([3H]PZ) and the classical antagonist [3H](-)-quinuclidinyl benzilate ([3H](-)QNB) in homogenates of the rat neocortex was studied. ChAT activity was 42% lower in rats with ibotenate-induced lesions of the nucleus basalis magnocellularis (nbm) when compared to controls, and [3H]HC-3 binding was similarly reduced by 44%. However, equilibrium dissociation constants (Kd values) for [3H]HC-3 (0.8-1.0 nM), [3H](-)QNB (11-24 pM), [3H]PZ (4.0-4.3 nM) and [3H](+)CD (2.1-2.9 nM) were each unchanged. Mean Bmax values (total binding site densities) for [3H](+)CD were significantly altered in both hemispheres of the anterior cerebral cortex, showing a 25% reduction in the number of sites which display the highest affinity conformation for this potent muscarinic agonist. The decreased ChAT activity and [3H]HC-3 binding after nbm lesions were associated with only slight reductions in putative M1 muscarinic site density (14%) and [3H](-)QNB binding site density (13%). Thus, it appears that while [3H]PZ and [3H](-)QNB label predominantly postsynaptic muscarinic binding sites, a significant number of sites labeled by [3H](+)CD may be associated with presynaptic cholinergic nerve terminals. These data suggest that cholinergic input differentially regulates the drug binding sites of anterior cerebral cortical muscarinic receptors, exerting a substantial effect upon the highest affinity conformational state for agonists. PMID- 3840400 TI - Power spectral analysis of hippocampal and cortical EEG activity following severe prenatal protein malnutrition in the rat. AB - We have studied the effects of prenatal protein malnutrition on development of the hippocampal and frontal cortical electroencephalographic (EEG) activity. Using power spectral analyses in rats of several age groups we found that protein malnutrition, instituted prenatally and continued postnatally, produces marked alterations in power spectral measures, i.e., alterations in peak theta frequency in the hippocampus during rapid eye movement (REM) sleep. Peak theta frequency was found to be significantly retarded in malnourished animals, especially during the preweaning period of development. Protein malnutrition, therefore, appears to affect mechanisms responsible for generating the tonic component of theta activity. PMID- 3840401 TI - Randomization program for Apple IIe computer. PMID- 3840402 TI - Physical, chemical, and physiological characteristics of isolates of pulmonary surfactant from adult rabbits. AB - Physical and chemical characteristics of two types of preparations of surface active material from adult rabbits were determined. A procedure using multiple centrifugations produced a surface active material (type A) which had 6.6% by weight protein and a phosphorus/protein ratio of 13.1 nmol P/microgram protein. A simpler protocol involving two centrifugations yielded a surface active material (type B) with more protein (10.8%) and a lower phosphorus/protein ratio (8.4 nmol/micrograms). Lipid compositions of both types were similar with phosphatidylcholine being the major phospholipid (80%) and palmitate the major fatty acid in the total lipid (65-71%) and in phosphatidylcholine (80%). Both types exhibited broad thermotropic phase transitions encompassing 37 degrees C. Measurements of aqueous dispersions of surface active material on the surface of a Langmuir-Whilhelmy balance or in a pulsating bubble apparatus indicated that there was variability both between types and between batches of the same type in the capacity to reach low surface tension on the surface balance and in the rates at which low surface tension was achieved on the bubble apparatus. Type A preparations were somewhat more reliable in meeting these ends than were type B. Both types of isolates were effective in normalizing pressure-volume characteristics when instilled into the lungs of immature rabbit fetuses. PMID- 3840403 TI - Kwashiorkor in an urban Canadian child. PMID- 3840404 TI - Primary lymphoma of the liver. Ten cases and a review of the literature. AB - Ten adult white patients (21-75 years old; six women, four men) presented with large cell lymphoma of the liver. Each complained of abdominal pain and/or an abdominal mass, and five had B-symptomatology of weight loss, fever (one patient), and night sweats (three patients). At laparotomy (eight patients) or by computerized tomography, liver-spleen scan and lymphangiogram (two patients with percutaneous liver biopsy only), the liver was the sole site of involvement, although subsequent staging procedures revealed bone marrow involvement in three patients. Initial biopsy interpretation was incorrect in four cases which were diagnosed as poorly differentiated carcinoma. Although uncommon, the differential diagnosis of primary liver lymphoma should be entertained when patients present with solitary (three cases) or multiple (six cases) liver defects, particularly when alpha-fetoprotein and carcinoembryonic antigen levels are normal. One patient had diffuse hepatomegaly. Treatment included biopsy (eight patients) or resection (two patients) followed by combination chemotherapy. All patients are alive from 0 to over 10 years (mean, 2.4; median, 1.8 years): six in complete remission, two with less than 6-months follow-up, and two with recurrent lymphoma. Examination of this group of patients along with 19 cases identified in the literature suggests that this is a more treatable disease than primary liver carcinoma. PMID- 3840405 TI - Non-Hodgkin's lymphoma of Waldeyer's ring. AB - The authors retrospectively analyzed 103 patients to investigate the value of examination of Waldeyer's ring with biopsies as a staging procedure in patients with non-Hodgkin's lymphoma. Twenty-three patients had clinical involvement of Waldeyer's ring. In 55 of 80 remaining patients, this staging procedure was performed but positive biopsy specimens were found only in patients with advanced disease. No correlation was found between positive biopsy specimens and the histologic subtype. No positive biopsy specimens of Waldeyer's ring were obtained in patients with cervical lymphadenopathy without clinical involvement of the nasopharynx and in patients with localized lymphoma of the gastrointestinal tract. Blind biopsies of Waldeyer's ring as a staging procedure proved to be of no value in the patients. The results of therapy in 23 patients with involvement of Waldeyer's ring were good. Unfavorable histologic subtypes (intermediate or high-grade malignancy) were predominant (91%). Eighteen of 22 patients (82%) achieved complete remission, with a relapse-free survival rate at 60 months of 95%. For the whole group of patients, the actuarial survival rate at 72 months was 71%. PMID- 3840406 TI - Malignant lymphomas involving the prostate. A study of 13 cases. AB - The clinical and pathologic findings in 13 cases of malignant lymphoma involving the prostate gland were reviewed. The lymphomas tended to occur in elderly men with a mean age of 60 years (range, 30-86 years) and were clinically manifested by prostatic enlargement with urinary obstruction. In only one of the patients was there clinical suspicion of lymphoma before surgery. Seven patients had primary extranodal lymphoma of the prostate, with a variety of histologic subtypes, including small cell lymphocytic (one patient), diffuse small cleaved cell (two patients), diffuse mixed small and large cell (two patients), diffuse large non-cleaved cell (one patient), and high-grade diffuse small non-cleaved cell (undifferentiated non-Burkitt's) (one patient). At the time of presentation, none of these patients had hepatosplenomegaly, inguinal lymphadenopathy, abnormal complete blood counts, or elevated serum acid phosphatase levels. Six other patients with previously documented malignant lymphoma at other sites had prostatic involvement 2 to 60 months (mean, 14 months) after the primary diagnosis. Histologically, these secondary prostatic lymphomas included diffuse small cleaved cell (two patients), diffuse mixed small and large cell (one patient), diffuse large non-cleaved cell (two patients), and large cell immunoblastic, polymorphous type (T-cell by immunotyping) (one patient). The mean survival was 14 months for all patients (range, 2-44 months), with no apparent difference between primary and secondary involvement. One patient remains alive 44 months after secondary prostatic involvement with diffuse large non-cleaved cell lymphoma. Although malignant lymphomas involving the prostate are rare, they should be included in the differential diagnosis of lower urinary tract obstruction, particularly in patients with a previous history of lymphoma. PMID- 3840407 TI - Osteonecrosis of sternum and rib in a patient treated for Hodgkin's disease. AB - A 39-year-old man is described in whom osteonecrosis of the manubrium sterni developed 23 months and of a rib 25 months after treatment for Hodgkin's disease Stage IIIB with polychemotherapy and subdiaphragmatic radiotherapy. The radiologic and histologic characteristics of this very rare localization of steroid-associated osteonecrosis are discussed. PMID- 3840408 TI - Multiple recurrences of acute tumor lysis syndrome in an indolent non-Hodgkin's lymphoma. AB - Acute tumor lysis syndrome (ATLS) is an entity consisting of combinations of hyperuricemia, lactic acidosis, hyperkalemia, hyperphosphatemia, and hypocalcemia and occurring generally in aggressive, rapidly proliferating lymphoproliferative disorders with high tumor burdens. A patient is described with a diffuse intermediately differentiated lymphocytic lymphoma, considered by most an indolent B-cell non-Hodgkin's lymphoma, in whom developed multiple recurrences of ATLS after treatment when tumor regrowth occurred between cycles of therapy. The mitotic rate of this lymphoma was relatively high (30-80 mitoses/ten high-power fields). Lymph proliferative disorders with a high mitotic rate, and large tumor burden, regardless of histologic features, should be treated prophylactically against tumor lysis if regrowth between cycles occurs. PMID- 3840409 TI - A serially transplantable human giant cell glioblastoma that maintains a near haploid stem line. AB - We have karyotyped a human giant cell glioblastoma removed from an 11-year-old girl and have established from it a subcutaneously transplantable line in athymic nude mice. The original tumor contained near-haploid cells with 25 or 26 chromosomes, including two copies of #1, (7 or 7p+) and #18. There were also hyperdiploid (49-52) cells that were tetraploid for these same three chromosome types; doubled versions of the hyperdiploid population were also seen. The stemline of the mouse-grown tumor was 26,X, +1, +7p+, +18 in the first passage and has remained consistently near-haploid through ten serial in vivo passages. Growth stabilization has occurred with an average latency of less than 3 months. This transplantable line is available for evaluating chemotherapeutic responsiveness of human giant cell glioblastoma and for studying near-haploidy in solid human tumors. PMID- 3840410 TI - The deleted long arm of chromosome 6: a secondary chromosome abnormality in solid tumors and lack of congenital aberrations monosomic for part of the critical segment? PMID- 3840411 TI - Therapeutic effect reflected by plasma levels of a viral protein during combination chemotherapeutic treatment of mammary tumor-bearing mice. AB - Plasma concentrations of gp52, a Mr 52,000 glycoprotein of the mouse mammary tumor virus, have been measured during cyclophosphamide, doxorubicin (adriamycin) and 5-fluorouracil (CAF) treatment of mammary tumor-bearing CD8F1 mice. The value of plasma concentrations of gp52 as an indicator of CAF-mediated changes in tumor status was supported by each of the following findings: (a) CAF treatment did not interfere with the detection of elevated viral antigen levels in the plasma of tumor-bearing mice; (b) at 9-11 days after initiation of treatment, a significantly lower mean gp52 level, observed in the group of CAF-treated mice, provided definitive evidence of therapeutic effect; and (c) serial determinations of plasma gp52 levels in individual mice before, during, and after treatment provided a relative measure of therapeutic effect for each individual that was a reflection of corresponding changes in tumor size. Changes in viral antigen levels (i.e., decrease or increase) reflected inhibited tumor growth, as well as tumor regression. These findings demonstrate that plasma concentrations of gp52 can be utilized to provide an alternative measure of therapeutic effect in CAF treated mice bearing significant tumor loads. PMID- 3840412 TI - Inhibition of tumor promotion in mouse skin by 1 alpha,25-dihydroxyvitamin D3. AB - 1 alpha,25-Dihydroxyvitamin D3 [1 alpha,25(OH)2D3], a hormonally active form of vitamin D3, was found to inhibit the promotional phase of 7,12 dimethylbenz[a]anthracene-induced skin carcinogenesis in female Sencar mice. Topical application of 1 alpha,25-(OH)2D3 once a week at a dose of 1 micrograms or less, a tolerable dose from hypercalcemia, dose dependently inhibited tumor promotion by 12-O-tetradecanoylphorbol-13-acetate (TPA). When 1 micrograms of 1 alpha,25(OH)2D3 was applied 30 min before 5 micrograms of TPA, the times required for 50 and 100% tumor incidence were delayed about 2.5 and 7 weeks, respectively, and the number of tumors per mouse was decreased by 25-30%. This inhibitory effect was more pronounced when examined by a two-stage promotion protocol, in which a single application of 5 micrograms of TPA (Stage I) was followed by repeated applications of 5 micrograms of mezerein once a week for 19 weeks (Stage II). When 1 alpha,25(OH)2D3 at 1 micrograms was applied at Stage I + II or Stage II, tumor formation was markedly suppressed, resulting in decrease of about 70 80% in the incidence and 87-90% in the number of tumors per mouse. Application of 1 alpha,25(OH)2D3 at Stage I only did not inhibit tumor formation, indicating that 1 alpha,25(OH)2D3 specifically inhibited Stage II promotion. These results are in good agreement with the previous and present findings that 1 alpha,25(OH)2D3 inhibited induction of epidermal ornithine decarboxylase by TPA and mezerein. The possibility that 1 alpha,25(OH)2D3 suppressed tumor promotion by killing initiated cells rather than inhibiting promotion was ruled out by an experiment in which TPA was applied to the 1 alpha,25(OH)2D3 alone-treated animals. PMID- 3840413 TI - Differential polarized phase fluorometric studies of the perturbation of phospholipid packing by BHT. AB - Butylated hydroxytoluene (BHT) partitions effectively into lipids and modifies cellular function and behavior in numerous ways, particularly at low temperatures. In this study, the modification by BHT of the lifetime and dynamic rotational characteristics of diphenylhexatriene (DPH) in dipalmitoylphosphatidylcholine (DPPC) liposomes was investigated by phase fluorometry. BHT broadens the gel to liquid crystalline transition of DPPC by decreasing the lower end of the transition (T1), leaving the upper end (Th) unaffected. The lifetime of DPH in DPPC does not vary linearly with temperature but declines sharply above the main transition. The average lifetime of DPH is decreased to a greater extent below, compared to above, Th by BHT. This may be due to increased water penetration into the bilayer interior. Non-monoexponential decay also occurs below Th, probably due to a heterogeneous distribution of BHT, which would result in highly perturbed regions of greater than average BHT content. The motional parameter of DPH most affected by BHT is the order parameter (S) which decreased to a considerable extent below Th but is not affected above Th. In contrast, the rotational diffusion coefficient (R) of DPH is increased slightly above Th by BHT. PMID- 3840414 TI - Effects of repeated endotoxin injections on prostanoids, hemodynamics, endothelial cells, and survival in ponies. AB - The objectives of this study were to determine the pathophysiological effects of increasing amounts of endotoxin administered intraperitoneally (IP) for 24 hr at which time an intravenous (IV) injection of endotoxin was given. The ability of flunixin meglumine (FM), a nonsteroidal antiinflammatory drug with antiprostaglandin activity, to provide protective effects was also determined. Eight ponies were divided into two groups of four ponies each; one group (untreated) received endotoxin only and the other group (treated) received endotoxin while being treated with flunixin. Hemodynamic and serum prostanoid changes were recorded for 26 hr during which time five IP and one IV endotoxin injections were given. Both groups behaved similarly until the intravenous endotoxin injection at 24 hr. At that time, the protective effects of flunixin became apparent by preventing increases in thromboxane and prostacyclin concentrations and by maintaining cardiac output, systemic arterial blood pressure, and blood flow to critical organs. Electron microscopic examination of pulmonary arteries of untreated animals revealed extensive endothelial cell damage while treatment with FM reduced this damage. A parallel study involving survival time in two groups of eight ponies each was also conducted using the same endotoxin and treatment protocol. At the end of 7 days, two of eight untreated ponies survived while six of eight treated ponies survived. It was concluded that FM prevented the release of prostanoids, maintained hemodynamics and blood flow nearer pre-endotoxin values, reduced vascular endothelial cell damage, and improved survival. PMID- 3840415 TI - Plasma levels of 6-keto PGF1 alpha but not TxB2 increase in rats with peritonitis due to cecal ligation. AB - Acute, overwhelming sepsis or endotoxemia in experimental animals is associated with increased circulating levels of thromboxane (Tx)B2 (stable metabolite of TxA2) and 6-keto PGF1 alpha (stable metabolite of prostacyclin). The purpose of the present investigation was to determine the plasma prostanoid response to sepsis using an animal paradigm in which the septic process evolved more slowly than in previous similar studies. Bacterial peritonitis was induced in rats by cecal ligation (group B) or cecal ligation plus puncture with a 22-gauge needle (group C). Compared to sham-operated controls (group A), levels of immunoreactive 6-keto PGF1 alpha were significantly (p less than .05) elevated in group C rats at 6, 12, and 24 hr after surgery. At 48 hr after surgery, levels of this prostanoid were significantly (p less than .05) elevated in group B animals. In contrast, TxB2 levels were never significantly increased in septic (groups B and C) as compared to control (group A) rats. These data are consistent with results from several clinical studies and emphasize an important difference between the cecal ligation model and other experimental sepsis paradigms. PMID- 3840416 TI - Ibuprofen, methylprednisolone, and gentamicin as conjoint therapy in septic shock. AB - Septic shock is associated with increased metabolism of arachidonic acid to thromboxane A2 (TxA2) and prostacyclin (PGI2). The effects of ibuprofen, methylprednisolone-sodium succinate, and gentamicin alone, or in combination on survival time and, TxA2 and PGI2 production in rats in a LD100 fecal peritonitis shock model were assessed. Plasma levels of TxA2 and PGI2 were measured by radioimmunoassay of their stable metabolites immunoreactive (i) TxB2 and i6-keto PGF1 alpha, respectively. Drugs were given 30 min before induction of fecal peritonitis. Survival times in hours were as follows: fecal peritonitis = 10.5 +/ 0.4 (n = 50); ibuprofen (15 mg/kg) = 16.1 +/- 0.8 (n = 8); methylprednisolone sodium succinate (40 mg/kg) = 17.1 +/- 0.7 (n = 22); methylprednisolone-sodium succinate (80 mg/kg) = 46.1 +/- 10.4 (n = 25) with 8% long-term survivors (survival greater than 7 days); gentamicin (4 mg/kg) = 23.8 +/- 4.4 (n = 16); methylprednisolone-sodium succinate (40 mg/kg) + ibuprofen = 20.3 +/- 1.8 (n = 6); gentamicin + methylprednisolone-sodium succinate = 31.0 +/- 1.6 (n = 11); gentamicin + ibuprofen = 28.5 + 2.3 (n = 12); gentamicin + methylprednisolone sodium succinate (40 mg/kg) + ibuprofen = 46.9 +/- 5.4 (n = 8). Treatment with the combination of gentamicin + ibuprofen + methylprednisolone-sodium succinate (80 mg/kg) resulted in a mean survival time of 116 +/- 13.9 h with 26% long-term survivors. Methylprednisolone-sodium succinate (40 mg/kg) reduced (P less than 0.05) plasma iTxB2 from 995 +/- 78 (n = 16) to 714 +/- 48 (n = 18) pg/ml and i6 keto-PGF1 alpha from 4,090 +/- 334 (n = 12) to 2,009 +/- 119 (n = 17) pg/ml, 4 h post-FP. Methylprednisolone-sodium succinate (80 mg/kg) produced no further decrease in either iTxB2 or i6-keto-PGF1 alpha. Ibuprofen reduced the fecal peritonitis-induced iTxB2 and i6-keto-PGF1 alpha synthesis to nondetectable levels (less than 200 pg/ml). The latter results demonstrate that methylprednisolone-sodium succinate is less effective than ibuprofen in inhibiting arachidonic acid metabolism and suggest other salutary actions. These composite observations provide evidence that conjoint therapy with steroidal and nonsteroidal anti-inflammatory agents, and antibiotics in septic shock may be beneficial. PMID- 3840417 TI - Role of subcutaneous tissue endotoxin in the production of prostanoid-induced lung injury: comparison with intravenous endotoxin response. AB - Local injection of endotoxin into soft tissues of the flank results in hypoxia and pulmonary hypertension. Our purpose was to determine whether this was caused by tissue prostanoid production or production by the lung as is seen with endotoxemia. Twenty-six sheep were prepared with lung and flank tissue lymph fistulae. Thirteen sheep were given 2 micrograms/kg Escherichia coli endotoxin into the flank soft tissue, six of which were pretreated with ibuprofen, 12.5 mg/kg. Thirteen sheep were given intravenous endotoxin, 2 micrograms/kg, with six pretreated with ibuprofen. An early hypertensive phase was noted with both insults characterized by pulmonary hypertension, hypoxia, and increased lung lymph flow (QL). With subcutaneous tissue endotoxin, there was a significant increase in tissue lymph TxB2 and 6-keto-PGF1 alpha when compared to lung lymph and increased values in venous plasma compared to arterial plasma, indicating tissue to be the source. With intravenous endotoxin, lung lymph and aortic plasma levels were significantly higher than tissue lymph and venous plasma, respectively. The hypoxia, hypertension and increased prostanoids were prevented using ibuprofen. An increased lung permeability phase was noted with intravenous endotoxin but not with tissue endotoxin. As expected, this phase was not inhibited with ibuprofen and, therefore, not prostanoid-induced. PMID- 3840418 TI - Comparison of a cytosol radioreceptor assay with a radioimmunoassay for 1,25 dihydroxyvitamin D in serum or plasma. AB - Human plasma and serum levels for 1 alpha,25-dihydroxyvitamin D were determined by a cytosol radioreceptor assay (RRA) and a radioimmunoassay (RIA). For both assays, 1.5 ml of human serum or plasma is used. Prior to RRA or RIA, extraction with benzene is performed followed by 'high-performance' liquid chromatography (HPLC) on a silica column (25 X 0.46 cm) with hexane/isopropanol (9/1 by vol), to isolate 1 alpha,25-dihydroxyvitamin D from the other vitamin D metabolites. The cytosol receptor was isolated from the intestine of healthy chickens. The antisera were raised in rabbits to 1 alpha,25-dihydroxyvitamin D3-3-hemisuccinate coupled to bovine serum albumin. The standard curves for RRA and RIA are prepared with 1 alpha,25-dihydroxyvitamin D3. 1 alpha,25-dihydroxy[3H]vitamin D3 of high spec act (158 kCi/mol) is used as tracer. The reactants are incubated for 16 h at 4 degrees C. Then, bound and free ligand are separated after the addition of dextran-coated charcoal. Both assays have a sensitivity of 2 pg/tube. The cytosol receptor and the antibodies have about the same absolute affinity for 1 alpha,25 dihydroxyvitamin D3 but the cytosol receptor has a higher relative affinity for 1 alpha,25-dihydroxyvitamin D3 (compared with other vitamin D metabolites). Reproducibility and precision are better for the RIA. The between- and within assay CVs are 16.0% (mean = 58.7 ng/l, n = 16) and 11.2% (mean = 52.1 ng/l, n = 15), respectively, for RRA and 12.6% (mean = 61.8 ng/l, n = 27) and 7.4% (mean = 61.8 ng/l, n = 15), respectively using RIA. Reference values obtained by both assays on healthy males and healthy premenopausal females are the same for both sexes; 53.9 +/- 31.0 ng/l (n = 46) using RRA and 51.8 +/- 30.2 ng/l (n = 91) for RIA (mean +/- 2 SD). PMID- 3840419 TI - Cochlear implants today. PMID- 3840420 TI - Prepregnancy counseling and contraception in the insulin-dependent diabetic patient. PMID- 3840421 TI - Intrauterine intracranial hemorrhage in an infant with isoimmune thrombocytopenia. AB - An infant with isoimmune thrombocytopenia and presumed intrauterine intracranial hemorrhage is presented. This infant developed focal seizures on day 6 of life which were controlled with phenobarbital. Presently, the infant is growing and developing normally. Previous cases have been described and are summarized in this paper. There is no known method for predicting or preventing this particular complication. PMID- 3840422 TI - Effects of acute and chronic treatment with glucocorticoids on the intestinal absorption of calcium and phosphate and on plasma 1,25-dihydroxyvitamin D levels in pigs. AB - We have used young pigs, each prepared surgically with a Thiry-Vella loop of proximal small intestine, to study the time course of changes in the intestinal absorption of calcium, phosphate, sodium, glucose and water and on the plasma levels of 1,25-dihydroxyvitamin D after treatment of the animals with glucocorticoids. Perfusion of the intestinal loop for 6 h with a solution containing hydrocortisone or beta-methasone was without effect on the absorption of calcium or phosphate. The oral administration of betamethasone stimulated the absorption of calcium and phosphate by 15-20% for 2-3 days before the trend was reversed and absorption was progressively reduced. Chronic treatment with betamethasone inhibited only the active component of calcium and phosphate absorption. Treatment with betamethasone was associated with a sustained 25-50% increase, to a maximum by 2 days, in the absorption of sodium, glucose and water. Plasma levels of 1,25-dihydroxyvitamin D were reduced within 2 days of the start of treatment and reached a minimum (40-50% decrease) in 4-6 days. We conclude that the initial stimulation of calcium and phosphate absorption is caused by the increased absorption of water. The long-term decrease in absorption may not be caused solely by the decreased circulating levels of 1,25-dihydroxyvitamin D since absorption continued to fall for several weeks after 1,25-dihydroxyvitamin D levels had reached a minimum. PMID- 3840423 TI - Effects of an azasteroid on growth, development and reproduction of the free living nematodes Caenorhabditis briggsae and Panagrellus redivivus. AB - The azasteroid, 25-azacoprostane (ASA-6), was evaluated for its effects on the growth, development and reproduction of the free-living nematodes, Caenorhabditis briggsae and Panagrellus redivivus. The axenic culture medium for either species of nematode consisted of Caenorhabditis briggsae Maintenance Medium (CbMM): formalin-killed Escherichia coli (1:1) with or without the addition of 5 micrograms cholesterol per ml and/or 25 micrograms ASA-6 per ml medium. All cultures also contained 50 micrograms Tween 80 per ml medium. After two generations of growth in sterol-deficient media, both species displayed a decrease in mean length, a decrease in the percent development to the adult stage and an inhibition of reproductive capability. These effects were more apparent in the sterol-deficient medium containing ASA-6. In the presence of cholesterol and ASA-6, growth and reproduction of C. briggsae, but not of P. redivivus, was inhibited after five generations. Morphologic abnormalities of azasteroid inhibited worms were similar to those shown by worms cultured in sterol-deficient medium. These results suggest that different species of nematodes may exhibit different responses to azasteroid and that sterol utilization and metabolism may vary between nematode species. In addition, the similarities between the known effects of azasteroid inhibition in insects and those presented in this study on nematodes suggest a similar mechanism of action by the inhibitor in both groups of organisms. PMID- 3840424 TI - Exclusion of plasma lipoproteins of intestinal origin from avian egg yolk because of their size. AB - Increasing the fat content of the diet increases the proportion of large triglyceride-rich (TGR) lipoproteins (portomicrons) in laying-hen plasma, but has no effect on the size distribution of yolk TGR-lipoproteins. Electromicrographs of the ovarian follicle walls of hens fed a high-fat diet show the presence of numerous portomicron-like particles in the lumen of the thecal capillaries, in the pericapillary spaces and in the theca interna, but portomicrons were absent from the basal lamina, between the granulosa cells and in newly deposited yolk. Most of the lipoprotein lipase activity in the ovarian follicles is associated with the granulosa cells, but total activity in the follicle is very small compared to heart or adipose tissue. The results indicate that the ovarian follicle of the laying-hen specifically excludes lipoproteins of intestinal origin from yolk, most probably because they are too large to pass through the connective tissue matrix of the basal lamina. The low lipoprotein lipase activity of the ovarian follicle, together with its distribution within the follicle wall, indicates that the ovarian follicles make little contribution to catabolism of circulating portomicrons. PMID- 3840425 TI - Calcium-dependent muscle contraction in obliquely striated Ascaris suum muscle. AB - The regulatory proteins of Ascaris suum striated skeletal muscle were partially purified and characterized. A tropomyosin isoform (Mr 41K) and three troponin subunits identified as troponin T (Mr 37.5K), troponin I (Mr 25.5K) and troponin C (Mr 18.5K) were purified. Three myosin light chains (Mr 25K, 19K, and 17K) were isolated from washed Ascaris actomyosin; the 19K subunit was phosphorylated in vitro. A calcium/calmodulin-dependent myosin light chain kinase activity was identified in the muscle. In contrast to previously reported data suggesting that Ascaris obliquely striated muscle contraction is regulated by a myosin-mediated mechanism, these data indicate that all of the proteins required for actin mediated, calcium-dependent muscle contraction are present in this tissue. PMID- 3840426 TI - An interactive software for 81mKr pulmonary ventilation gating. AB - An interactive software to gate scintigraphic list-mode data collected from ventilation studies using a radioisotope of an inert gas (81mKr) has been developed. It allows the detection of end expiration and end inspiration phases in a time activity curve. It involves six phases: filtering of the curve; preselection of local extrema; validation of the preselection; choice of the parameters for the reconstruction; control of the selected cycles and display of parameters such as frequency, expiration time, breath amplitude; reconstruction of images representing the distribution of ventilation during a mean respiratory cycle. This software was tested on 116 data sets without a failure. The interactive definition and control of the selected times made the algorithm useful regardless of the count rate and the frequency. It could be adapted to gate other periodic or semiperiodic physiological phenomena. PMID- 3840427 TI - A digital sound editor. AB - A series of digital computer programs which facilitate the production and control of acoustic stimuli for hearing assessment and research are described. The package, which is available for PDP 11 computers under RT-11, allows sounds to be digitized, adjusted for amplitude and/or dc offset, edited while in digital form, and output to file or tape. The waveform editor package includes facilities to edit sounds in time--with some sections removed or added with temporal precision of 0.1 msec or better. Two or more sounds may also be combined for stereo or monaural (sound-on-sound) output, or two may be concatenated. Together, the programs permit a wide range of manipulations useful in preparing sound stimuli for use in hearing experiments or in clinical audiometry. PMID- 3840428 TI - Sites of contact dermatitis in relationship to particular allergens. AB - A study of 1016 patients over a period of 2 years has been performed by using the DALUK computer system in order to find correlations between eczema sites and particular allergens. The study includes a control material of patients with other contact allergies or with negative patch tests. The investigation confirms some well-known correlations, e.g., between lanolin allergy and dermatitis of the lower leg, and between nickel allergy and dermatitis of the palm. Several new correlations are also described, e.g., chromium allergy and dermatitis of the back of the trunk, allergy to balsam of Peru and dermatitis of the forehead and cheek. PMID- 3840429 TI - Loss of fiberoptic laser tip. PMID- 3840430 TI - Antiandrogen and antineoplastic effects of a novel drug, CPC10997. AB - CPC10997 was found to be effective in vitro as an antiandrogen without effects on either the estrogen or the progesterone receptors in carcinomas of the breast, ovary and prostate as well as in malignant melanomas. Using the clonogenic assay of Salmon et al. [Cancer Treat. Rep. 65: 1-12, 1981], CPC10997 was found to be more effective against carcinomas of the breast, the kidney, the ovary and the prostate than conventional antineoplastic agents in the majority of tumors tested. In view of the very favorable toxicology profiles and in vitro efficacy, further trials using CPC10997 as an antineoplastic agent are indicated. PMID- 3840431 TI - [The application of enzyme linked immunosorbent assay (ELISA) for the determination of Staphylococcus enterotoxins C1, C2]. PMID- 3840432 TI - [Acute arthroscopy in clinically stable knees with hemarthrosis]. AB - From 2006 arthroscopies of the knee, carried out between 1978 and 1983, 196 cases (9.8%) presented with traumatic haemarthroses and clinically stable capsular ligaments. A comparison was made between the standard clinical examination including routine X-ray and arthroscopy carried out under anaesthesia. Arthroscopy, as a diagnostic procedure, was found to be clearly superior with the same minimal complication rate. The standard clinical examination was inferior and inadequate particularly in cases with isolated torn anterior cruciate ligaments, in chondral injuries, and luxation of the patella. Thus, in a recent trauma with haemarthrosis and a clinically stable ligament apparatus, acute arthroscopy is the investigational method of choice, preferably carried out under anaesthesia. PMID- 3840434 TI - Sequence analysis of a cloned cDNA coding for bovine seminal ribonuclease. AB - The sequence of a cloned cDNA coding for bovine seminal ribonuclease, an enzyme secreted in the bull seminal vesicles, was determined. The cDNA starts at the amino acid residue 47 and terminates 12 nucleotides beyond the consensus sequence AAUAAA in the 3' non-coding region of the mRNA. Northern blotting analysis shows that the mRNA for bovine seminal ribonuclease consists of about 950 nucleotides, a value that is similar to that of other mRNAs coding for ribonucleases of the pancreatic type. PMID- 3840433 TI - Comparative sequence analysis of rat, rabbit, and human muscle glycogen phosphorylase cDNAs. AB - As an initial step in the investigation of the structure, evolution and developmental regulation of the glycogen phosphorylase gene family, we have isolated partial cDNAs to rat, rabbit and human muscle phosphorylase mRNAs. Sequence comparisons of these cDNAs in regions that encode portions of the enzyme located near and encompassing the C terminus show that there is a high degree of interspecies conservation of structure in this region. Conservation of amino acid and nucleotide sequence is high, approximately 96% and 90% homology, respectively, among all three species. In addition, most of the amino acid changes that have occurred conserve the chemical nature of the amino acid side chains affected. The changes can be easily accommodated in the rabbit muscle phosphorylase tertiary structure and appear to have little effect on the overall conformation. Interestingly the rat and human enzymes lack the carboxyl-terminal proline (residue 841) present in the rabbit enzyme and terminate at isoleucine (residue 840). The genetic basis for this difference in carboxyl termini is unknown. However, unlike the other amino acid changes, it cannot be accounted for by a single base-pair substitution. A comparison of the 3' untranslated regions in these cDNAs shows that there has been little constraint on the evolutionary divergence of most of this region (70% homology among the three species). There are, however, two repeated segments of DNA flanking the stop codons that are identical among all three species. Similar sequences are found within regions of DNA that contain a variety of transcriptional enhancers, suggesting the possibility that the repeats may be functional. PMID- 3840435 TI - Attachment of the 5'-terminal portion of globin mRNAs to 5S-RNA X L5-protein in the 80S initiation complex. AB - An 80S initiation complex was formed by incubating a heterologous cell-free system with 125I-labeled globin mRNAs in the presence of sparsomycin. The 80S initiation complex was then digested with micrococcal nuclease. The ribosomal 5S RNA X L5-protein (5S RNP) fraction, released by EDTA treatment, contained 125I labeled mRNA fragments. The attachment of labeled mRNA fragments to 5S RNP was shown by (a) CsCl isopycnic centrifugation, (b) recentrifugation through a sucrose density gradient and (c) acrylamide gel electrophoresis of 5S RNP purified by (b). Labeled fragments were released from 5S RNP by treatment with sodium dodecyl sulfate or pronase, indicating the participation of protein L5 in the attachment. The attached mRNA fragments were 23-25 nucleotides in length. Hybridization experiments, using restriction fragments of cDNA for rabbit beta globin mRNA, showed that the attached mRNA fragments were derived from the 5' portion of globin mRNAs. The attachment of 125I-labeled mRNA fragments to 5S RNP was also observed in the 80S initiation complex formed by incubation of reticulocyte lysate with 125I-labeled globin mRNA, but not in labeled polysomal fractions. These findings may indicate that 5S RNP interacted with the 5' portion of globin mRNA, containing the translation initiation codon of globin mRNA in the 80S initiation complex. The biochemical significance of these results is discussed. PMID- 3840436 TI - Mammalian fatty acid synthetase is a structurally and functionally symmetrical dimer. AB - We have explored a comprehensive experimental approach to determine whether the two condensing-enzyme active centers of the mammalian fatty acid synthetase are simultaneously functional. Our strategy involved utilization of trypsinized fatty acid synthetase, which is a nicked homodimer composed of two pairs of 125 + 95 kDa polypeptides. These core polypeptides lack the chain-terminating thioesterase domains but retain all other functional domains of the native enzyme and can assemble long-chain acyl moieties at a rate equal to that of the native enzyme. The 4'-phosphopantetheine content of these enzyme preparations, estimated from the amount of beta-alanine present, from the amount of taurine formed by performic acid oxidation and from the amount of carboxymethylcysteamine formed by alkylation with iodo[2-14C]acetate, was typically 0.86 mol/mol 95-kDa polypeptide. The stoichiometry of long-chain acyl-enzyme synthesis, measured with radiolabeled precursors, indicated that 0.84 mol acyl-chains were assembled/mol 95-kDa polypeptide. When the small amount of apoenzyme present is taken into account, this stoichiometry translates to 1.94 acyl chains per holoenzyme dimer. The 125-kDa polypeptide of one subunit could be cross-linked to the 95-kDa polypeptide of the other subunit by 1,3-dibromo-2-propanone yielding a single molecular species of 220 kDa. Cross-linking was accompanied by a loss of condensing-enzyme activity. This result is consistent with a structurally symmetrical model for the animal fatty acid synthetase [J.K. Stoops and S.J. Wakil (1981) J. Biol. Chem. 256, 5128-5133] in which the juxtaposed 4' phosphopantetheine and cysteine thiols of opposing subunits that form the two potential catalytic centers for condensing activity are readily susceptible to cross-linking. Both half-maximal cross-linking and 50% inhibition of activity were observed with 1 mol 1,3-dibromo-2-propanone bound/mol enzyme. After assembly of long-chain acyl moieties on the 4'-phosphopantetheine residues, no vacant condensing-enzyme active sites were demonstrable either by cross-linking with 1,3 dibromo-2-propanone or by formation of carboxymethylcysteamine on treatment with iodoacetate. These results are consistent with a structurally and functionally symmetrical model for the mammalian fatty acid synthetase in which the two condensation sites are simultaneously active. PMID- 3840437 TI - Mean time and first-pass metabolism. AB - The theoretical principles are outlined for estimating the fraction of a drug undergoing first-pass metabolism using only the plasma levels found after a single oral dose. Data for 3 drugs are used to illustrate the method. It involves analysis of the parent drug and the metabolite formed during the first passage through the gut wall and liver and evaluation of their total mean times. The mean time characteristics of molsidomine, nortriptyline and propranolol are considered and they confirm the theoretically deduced dependency of the mean time of the parent drug and the metabolite. Whether the results are more precise than those obtained from comparison of areas after oral and intravenous administration is discussed. From the data presented it is clear that the mean time method depends on the scatter inherent in the data. In order to estimate the true first-pass effect, greater scatter requires an increased number of data pairs, i.e. subjects. If intravenous data are not available, however, the method described provides a rough but worthwhile estimate of the first pass effect. PMID- 3840438 TI - Pharmacological distinction between two muscarinic responses on the isolated superior cervical ganglion of the rat. PMID- 3840439 TI - The Ca signal from fura-2 loaded mast cells depends strongly on the method of dye loading. AB - The Ca concentration ([Ca2+]i) in single rat peritoneal mast cells was measured by means of the new fluorescent Ca-indicator dye fura-2. Dye-loaded cells were made to degranulate with either antigen or compound 48/80. In cells loaded with extracellularly applied, membrane-permeant fura-2 ester, degranulation was accompanied by a permanent loss of 40-60% of the fluorescence, but comparison of fluorescence at different wavelengths indicated no or only small changes in [Ca2+]i. When cells were loaded by microinjection of the impermeant potassium salt of the dye, degranulation resulted in no permanent loss of fluorescence, but instead was preceded by transient fluorescence changes that indicate a rapid, large and transient increase in [Ca2+]i. We suggest that ester-loaded fura-2 accumulates to a significant degree in the secretory granules and is lost from the cell during exocytosis. PMID- 3840440 TI - Treatment of cervical mucus with lectins: effect on sperm migration. AB - Treatment of midcycle human cervical mucus with the lectins Ulex europaeus agglutinin I (UE), wheat germ agglutinin (WGA), and peanut agglutinin (PA) did not alter the ability of spermatozoa to enter and migrate through the mucus. These lectins form glycoconjugates by binding to L-fucose (UE), N acetylglucosamine and sialic acid (WGA), and D-galactose and D-galactose-(1-3)-D N-acetylgalactosamine (PA), sugars that are present in the carbohydrate side chains of the mucus glycoproteins (mucins). Ricinus communis, with high affinity for D-galactose and N-acetylgalactosamine, did cause a significant decrease in sperm migration but only within the mucus (not at the sperm-mucus interface); this may have been because of an effect on sperm motility. These sugars are thought to be important for the secondary structure of the glycoproteins and for the cross linking between the mucins that produce the rheologic properties of cervical mucus. However, it appears that interference with the sugars by lectin binding does not significantly alter the ability of spermatozoa to migrate through cervical mucus. PMID- 3840441 TI - Accumulation of creatine kinase mRNA during myogenesis: molecular cloning of a B creatine kinase cDNA. AB - Cytosolic creatine kinase isoenzymes MM, MB, and BB are assembled from M or B subunits which occur in different relative amounts in specific tissues. The accumulation of mRNAs encoding the M and B subunits was measured during myogenesis in culture. The relative concentration of the two mRNAs was determined by hybridization with a M-CK cDNA probe isolated previously and a B-CK cDNA probe, the cloning and characterization of which is reported here. The B-CK cDNA hybridizes specifically to a 1.6-kb mRNA found in brain and gizzard but not in adult skeletal muscle tissue. The M-CK cDNA hybridizes to a smaller mRNA 1.4-kb long which is specific to skeletal muscle. In culture, the B-CK mRNA is transiently induced and then declines to a low but detectable level. PMID- 3840442 TI - An oviductal fluid glycoprotein associated with ovulated mouse ova and early embryos. AB - This study documents a molecular change in the murine ovum related to its exposure to oviductal fluid. Wheat germ agglutinin (WGA) identifies a 215-kDa glycoprotein band (GP215) that is associated with ovulated oocytes and early embryos obtained from the oviduct, but is absent from preovulatory oocytes. GP215 is present in ovarian bursal fluid, oviductal fluid, oviductal epithelial cell extracts, and medium conditioned by oviductal tissue in vitro. Preovulatory oocytes acquire GP215 after in vitro incubation in ovarian bursal fluid. Thus, it appears likely that GP215 is secreted by the oviductal epithelium and becomes intimately associated with the ovum following ovulation. PMID- 3840443 TI - Peptide YY: metabolism and effect on pancreatic secretion in dogs. AB - Peptide YY is an ileocolonic peptide that inhibits meal-stimulated pancreatic secretion when infused in a dose of 400 pmol/kg X h. In this study pancreatic secretion was monitored in response to increasing doses of secretin or cholecystokinin-octapeptide (62.5, 125, 250, and 500 ng/kg X h) during the simultaneous infusion of either saline or peptide YY (400 pmol/kg X h). Peptide YY significantly (p less than 0.05) inhibited the secretory response to the three lowest doses of each pancreatic secretogogue, reducing the bicarbonate response to the 62.5-ng/kg X h dose of secretin by 86% +/- 6% and the protein response to the same dose of cholecystokinin by 57% +/- 16%. In the second limb of the study, the half-life of peptide YY (11.7 +/- 21 min) and the metabolic clearance rate (13.8 +/- 1.6 ml/kg X min) were found to be similar to those of other gastrointestinal hormones. We conclude that inhibition of meal-stimulated pancreatic secretion by peptide YY can be explained by its ability to decrease the responsiveness of the pancreas to endogenous secretogogues. PMID- 3840444 TI - [Recurrence of lymphosarcomas after intensive cyclic polychemotherapy and their treatment]. PMID- 3840445 TI - Estimation of myriad haplotype frequencies. AB - The present paper demonstrates algorithms for applying gene counting estimation of haplotype frequencies in very large genetic systems. A factor union representation of phenotypes is used which conveniently yields the sets of potential haplotypes and diplotypes for each phenotype. Methods for storing and rapidly retrieving the relevant haplotypes are given. An example with several hundred frequencies is given which required a few seconds computing time for each estimation iteration on a small computer. A computer program employing the methods described has been written in Fortran-77 and is available to any investigator on request. PMID- 3840446 TI - Familial analysis of qualitative traits under multifactorial inheritance. AB - The analysis of family data is described for qualitative multifactorial traits. For such a trait, affectational status is determined by an underlying liability distribution with one or more thresholds. The distribution of families (either selected at random or through probands) is used to estimate sex-specific parent offspring and sibling correlations in liability and the prevalence in each sex. In contrast to using pairs of relatives, this approach permits estimation of age specific population prevalences without a control sample. Moreover, by allowing for sex-specific correlations and a correlation between mates, path analysis can be used to model and test various cultural transmission models in addition to polygenic inheritance. Parameter estimation, hypothesis testing, and a goodness of-fit test for path analytic models are described, and a computer program implementing these procedures is outlined. PMID- 3840447 TI - Translational interference at overlapping reading frames in prokaryotic messenger RNA. AB - In overlapping reading frames of prokaryotic mRNA, the ribosome-binding site (RBS) of the downstream cistron is part of the coding sequence of the upstream message. We have examined whether the rate of translation in Escherichia coli can be sufficiently high to preclude the use of an RBS in initiation of protein synthesis when it is part of an actively decoded reading frame. The two sets of gene overlap present in the RNA phage MS2 are used as a model system. We find that translation of an upstream cistron can fully block initiation of protein synthesis at the overlapping RBS of the downstream cistron. Nonsense mutations in the upstream gene restore the translation of the downstream gene. PMID- 3840448 TI - Utilization of a hand-held programmable calculator for the morphometric analysis of structures by planimetric and point-counting methods. PMID- 3840449 TI - [Experiences with the Aachen IOL computer program]. PMID- 3840450 TI - [New indications for the Neodym-Yag laser in pediatric surgery. Results of a morphologic, experimental study]. PMID- 3840451 TI - Effects of deflazacort and the L-6485 metabolite on epiphyseal cartilage carbohydrate metabolism: comparison with prednisone. AB - Male Sprague-Dawley rats were injected with 1 mg/100 g bw/day of prednisone, 1.25 mg/1--g bw/day of deflazacort, or its metabolite, for a period of 20 days. Epiphyseal cartilage slices were incubated in a modified Krebs Ringer bicarbonate buffer, at 37 degrees C for 60 min, with either 14C-1- or 14C-6-glucose to quantitate both the absolute and relative rates of pentose shunt versus aerobic and anaerobic glycolytic activity, respectively. Measurements of both total and radioactive glucose uptake, lactate production and 14CO2 generation were expressed as either mumoles or DPM/mg cellular DNA/hr, respectively. This study demonstrated: (1) chronic prednisone administration decreased anaerobic glycolysis (glucose uptake and lactate production) 3-fold (P less than 0.01); (2) prednisone on a chronic basis produced no measured alteration in either the pentose shunt or Kreb's cycle activity; (3) both deflazacort and the deflazacort metabolite significantly stimulated (P less than 0.02) anaerobic glycolytic activity in epiphyseal cartilage tissue. In contrast to prednisone, the administration of either deflazacort or its L-6485 metabolite did not inhibit the glycolytic pathway of metabolism so necessary for epiphyseal cartilage growth and mineralization. PMID- 3840452 TI - Synergistic effect of liposomes and endotoxins on the activation of rat macrophage tumoricidal activity. AB - Macrophage biological responses to endotoxins have been extensively studied; nevertheless, the mechanisms by which endotoxins activate macrophage tumoricidal activity are not currently understood. We used liposomes to investigate the interaction of endotoxins with macrophages. In a medium containing 10 micrograms endotoxin/ml, macrophage-mediated cytolysis ranged from -7 to 36%. In all the experiments, 1mM dipalmitoyl phosphatidyl choline (DPPC) small unilamellar liposomes significantly induced or enhanced cytolysis, ranging from 30-90%. Liposomes and endotoxins had a synergistic effect on the macrophage cytolytic activity. This effect was dose-dependent on liposome concentration, ranging from 0.25-1 mM or 2 mM. Liposomes decreased the endotoxin concentration threshold necessary to induce cytolysis. They did not modify the kinetics of macrophage activation. Liposomes did not modify the binding of tumor cells to macrophages. The optimum synergistic effect was obtained when liposomes were present during the first 18 h of the mixed culture of macrophages and target cells, before adding endotoxins for the next 18 h. When cholesterol was added to DPPC (M/M), liposomes did not enhance but rather inhibited macrophage activation by endotoxins. PMID- 3840453 TI - Efficacy of amniotic phosphatidylglycerol in predicting foetal lung maturity. PMID- 3840454 TI - Distribution of live births & early neonatal mortality in relation to gestation & intrauterine growth. PMID- 3840455 TI - Variable distribution of aminopeptidase A in male reproductive organs of mammals. AB - Aminopeptidase A (AP-A) was analysed in the reproductive organs of the boar, bull, gerbil and man. High hydrolysis of alpha-L-glutamyl-beta-naphthylamide (GluNA) and alpha-L-aspartyl-beta-naphthylamide (AspNA) with activation by alkaline earth metals was detected in the ampulla, seminal vesicles, and seminal vesicle secretions of the bull and in the cauda epididymis of the boar and gerbil. In man, weak AP-A activity was found in all reproductive tissues. Histochemically, AP-A was localized in the epithelial cells of tissues having a high specific activity for the enzyme. AP-A was absent from human seminal fluid, whilst bovine seminal fluid had strong, and boar seminal fluid weaker, AP-A activity. Gel filtration of bull seminal vesicle secretions and seminal fluid, boar seminal fluid or an homogenate of boar and gerbil epididymal cauda and human epididymis and seminal vesicles on Sephacryl S-300 resulted in a major high molecular-weight activity peak A at Ve/Vo = 1.17 and another low-molecular-weight peak B at Ve/Vo = 1.51 (man), 1.62 (boar, bull) or 1.75 (gerbil). This fractionation was not in all cases able to separate AP-A from aminopeptidase(s), which were active on L-alanine-beta-naphthylamide (AlaNA) but showed no activation by alkaline earth metals. Homogenates of bovine epididymis showed only the low-molecular-weight GluNA peak B, but two areas of activity for AlaNA hydrolysis. In bovine seminal vesicles and porcine epididymis, AP-A activity appeared to be linked with the functional maturity of these organs. The high molecular-weight AP-A (peak A) appeared to be the predominant form in seminal fluid. PMID- 3840456 TI - Data entry by light pen. AB - Collection of data is often difficult in medical and nursing applications of computers. A system has been developed using an inexpensive light pen to enter most of the required information. This method of data entry has proved to be acceptable to medical and nursing staff in clinical situations. The software places light blocks adjacent to a list of items available for selection. When the pen is applied to a light block, the item is selected with visual and audible confirmation being given. Corrections may be made by re-applying the pen to the light block. PMID- 3840457 TI - Enhanced X-ray imaging of spheroids: an O(n) algorithm for characterizing convex blobs. AB - A simple O(n) algorithm to find the least squares circular fit of a tabulated function is presented. A demonstration of the algorithm's utility is provided by the analysis of a set of digitized band-filtered images of a radiograph of a common grapefruit. The application of this method of image understanding to the early radiographic detection and analysis of cancer (coin lesions) is proposed. PMID- 3840458 TI - Computerized drug therapy: application of the hand-held microcomputer to dosage regimen design. AB - For many drugs estimation of a safe and effective dosage regimen is difficult. Typically these drugs exhibit optimal therapeutic activity when drug concentrations in the blood are maintained within narrow limits and considerable intersubject variability exists in their rate of elimination from the body. Computer programs have been written to estimate the size and frequency of dose administration necessary to achieve therapeutic drug concentrations in the blood. The programs utilize pharmacokinetic equations and information on the individual patient's physiologic (e.g., age, weight, sex) and pathologic (e.g., existence of liver or renal disease) status. The drugs studied were gentamicin, theophylline, digoxin, phenytoin and warfarin. The programs were written using the hand-held TRS 80 Pocket Computer with an 8K memory module. These programs have been in use for 3 years and are currently involved in clinical consults approx. 100 times a month. PMID- 3840459 TI - Solution of the multiple dosing problem using linear programming. AB - A system theoretical approach to drug concentration-time data analysis is introduced after the discussion of some relevant concepts as they are used in system theory. The merits of this approach are demonstrated in multiple dosing problem. It is shown that dosage minimization without stringent constraints does not result in the desired therapeutic effect. In a different optimization the discrepancy between the actual and the desired time-histories of the relevant substance's plasma concentration is minimized. It is shown that both of these optimizations can be reduced to linear programming problems which are easily solvable with today's computers. These methods are demonstrated in a case study of dopaminergic substitution in Parkinson's disease where computer simulations show them to yield excellent results. Finally, the limits of this approach are also discussed. PMID- 3840460 TI - Nutrition support of inborn errors of amino acid metabolism. AB - Programs for nutrition support of patients with phenylketonuria, maternal phenylketonuria, branched chain ketoaciduria and vitamin B-6 non-responsive homocystinuria were written in BASIC. These programs plan diets to fill diet prescriptions using natural foods, available amino acid-free or restricted elemental products, milk or infant proprietary formulae and protein-free fat and carbohydrate sources. Emphasis is placed on satisfying the amino acid and protein prescriptions simultaneously. The final semisynthetic formula is evaluated for vitamins, minerals, renal solute load and renal net acid excretion. Fluid requirement is estimated. The paper describes how the conventional protocols are enhanced by computerization and details the requisite calculations. PMID- 3840461 TI - On-line data acquisition and control in a physiology laboratory. AB - A series of programs are described for use in estimating the pulmonary function of laboratory animals. Data acquisition and control are through a Hewlett-Packard (HP) 1000-F minicomputer. The system allows the estimation of respiratory parameters similar to those obtained in laboratories estimating pulmonary function in humans. PMID- 3840462 TI - An 'adjustable' calculator program to determine fraction of species versus pH profiles for mono-, di- or triprotic weak acids or bases. AB - A calculator program for TI-58/59 is presented which determines the fraction of dissociated and undissociated species of weak acids and bases, provided values for dissociation constants and pH are known. The answers are displayed in exponential notation. The calculations can be repeated at as many pH-values as required to obtain a satisfactory fraction of species versus pH profile. The program is made 'adjustable' by deleting selected program steps to accommodate calculations for mono-, di- or triprotic weak acids or bases. PMID- 3840463 TI - Health implications of obesity: an NIH Consensus Development Conference. AB - A Consensus Development Conference on the Health Implications of Obesity was held in February 1985 at the National Institutes of Health in Bethesda, Maryland, USA. After presentations by 19 experts in relevant subject areas, a panel of 15 impartial senior level professionals presented their consensus of findings and recommendations. This paper summarizes the results of the conference and provides reference tables of body mass index (BMI) values and weight goals, along with nomograms of the BMI determined from height and weight scales, to show comparisons with weight goals. The goals are taken from two widely available tables of mortality data by weight. These reference aids are included to illustrate the potential clinical value of wider use of the BMI, as recommended in the conference. PMID- 3840464 TI - Postnatal development and inducibility of renal tubular transport processes in rats. AB - The reason for the immaturity and for the time course of postnatal development of renal tubular transport of organic anions was studied, measuring age differences in renal tubular transport of p-aminohippurate (PAH) under various experimental conditions. In principle, PAH transport can be stimulated by repeated administration of weak organic anions, which were eliminated by the carrier system for weak organic anions. However, there is nearly no effect in neonatal rats. Pretreatment with thyroid hormones can enhance the low tubular transport capacity of young rats, too. Pretreatment with dexamethasone is preferentially effective in 5- to 15-day-old rats. The data indicate the involvement of hormonal regulation in postnatal development of renal tubular transport of PAH. PMID- 3840465 TI - Usefulness and limitations of the species concept for plant viruses. AB - Continuing concerns among virologists are what range of isolates is covered by one virus name and whether such names relate to categories broadly equivalent to biological species of higher organisms. In the potyviruses, tobamoviruses, and probably other groups of plant viruses with monopartite RNA genomes, exchange of genetic information among isolates is not known to occur; our ability to delineate separate viruses apparently depends on the extent to which biological fitness involves several correlated changes in the genomes of variant clones. Although some such correlated changes are found where viruses infect different plant families, intergrading forms occur in many instances where the host ranges of variants overlap. In plant viruses with multipartite RNA or DNA genomes, the extent of gene pools can be assessed from the ability of isolates to form pseudo recombinants by reassortment of their genome parts. In the nepoviruses, clusters of virus strains sharing a gene pool resemble, but seem more sharply delimited than, the clusters based on nucleotide sequence homology or serological specificity. In the tobraviruses gene pools do not coincide with serological groupings, and in the geminiviruses biologically very distinct entities have much genome homology and are closely related serologically. The biological species concept seems inappropriate or impractical for many plant viruses, and a more flexible and pragmatic approach to assigning virus isolates to nameable categories is advocated. PMID- 3840466 TI - Occurrence of retinopathy of prematurity in a very low birthweight population. PMID- 3840467 TI - Louisa Burns memorial lecture: measurement in medicine--the osteopathic perspective. PMID- 3840468 TI - Extra-label use of drugs. PMID- 3840469 TI - The nitrate reductase activity of milk xanthine oxidase. AB - Milk xanthine oxidase oxidizes xanthine at pH 9.6 and reduces nitrates at pH 5.2. It is shown that the nitrate reductase activity requires molybdenum and sulfur containing sites in the enzyme, whereas oxidation of xanthine also requires iron containing sites and FAD. As the pH changes from 5.2 to 9.6, the conformation of the enzyme molecule is modified as demonstrated by changes in the absorption, fluorescence, and circular dichroism spectra. When the enzyme is treated with dithioerythritol, it may pass from the oxidase to the dehydrogenase form with a marked increase in the nitrate reductase activity. PMID- 3840470 TI - Comparative study of the oligosaccharides of human thyroglobulins obtained from normal subjects and patients with various diseases. AB - Asparagine-linked oligosaccharides were released quantitatively by N oligosaccharide glycopeptidase (almond) digestion from human thyroglobulins prepared from thyroid glands of normal subjects and patients with several pathological conditions. The pyridylamino derivatives of the oligosaccharides were prepared and analyzed by high-performance liquid chromatography. The content of high-mannose-type oligosaccharides was comparable to that of the complex type in normal thyroglobulins. Man9GlcNAc2 was the predominant component in the high mannose-type region, while biantennary oligosaccharides with fucose were the major components in the complex-type region. High-mannose-type oligosaccharides were markedly decreased in thyroglobulins prepared from patients with various disorders, such as Basedow's disease, papillary carcinoma, and adenomatous goiter, whereas they were appreciably increased in thyroglobulin from diffuse goiter. PMID- 3840471 TI - Differential response of lung and liver of juvenile rats to choline deficiency. AB - The effect of choline deficiency on the lung lipids of actively growing male Sprague-Dawley rats was investigated using a washed soy protein diet deficient in choline and methionine (lipotrophic). The livers from deficient animals had a significantly increased total lipid content and decreased phosphatidylcholine (PC) content and PC-to-phosphatidylethanolamine ratio (P less than 0.01). Although lung free choline levels were decreased 40% compared with controls (P less than 0.05), the PC content of the whole lung homogenate was unchanged. However, disaturated phosphatidylcholine from animals receiving the lipotrophic diet was significantly increased in the lavage and proportionally decreased in the lavaged lung tissue compared with controls (P less than 0.01). This study indicates that, despite decreased lung choline levels as a result of ingesting a lipotrophic diet, and unlike the liver, lung PC content is maintained at normal values. Although the lung total PC levels are maintained, there is a change in the partition of this lipid pool between the tissue and the alveolar space. PMID- 3840473 TI - Data base management system applications for biocommunicators or how to use a computer to bring order out of chaos. PMID- 3840472 TI - Turnover of phospholipids isolated from fractions of lung lavage fluid. AB - To clarify the steps following surfactant secretion, we injected adult rabbits with radioactive palmitate, lavaged the airways, removed the cells, separated by ultracentrifugation lavage components into two fractions (B and C), and followed the labeling of phospholipids of these fractions. The results were compatible with the view that total and saturated phosphatidylcholine are transferred from B to C. Furthermore, the fluxes of total and saturated phosphatidylcholine through fraction C (0.45 and 0.30 mumol . h-1 . g lung-1, respectively) were compatible with the actual estimates of surfactant recycling. The labeling of phosphatidylglycerol ruled out a simple precursor-product relationship between B and C but was compatible with a nonideal first-order relationship. The labeling of phosphatidylinositol, cardiolipin, and phosphatidylethanolamine was incompatible with the existence of a direct precursor-product relationship between B and C. The labeling of total and saturated phosphatidylcholine suggests that fraction B may be made by active surfactant, whereas fraction C may contain surfactant modified for reuptake or for reuptake and catabolism. PMID- 3840474 TI - Methanosarcina mutant unable to produce methane or assimilate carbon from acetate. AB - Mutants of Methanosarcina barkeri 227 resistant to monofluoroacetate were isolated from monofluoroacetate-treated cultures. Mutant strain FAr9 was 100 times more resistant to monofluoroacetate than the wild-type strain and was deficient in carbon uptake and CH4 and CO2 production from methyl-labeled acetate. Methanol was assimilated at increased levels. Strain FAr9 was unable to shift from using methanol to using acetate for growth and exhibited increased sensitivity to growth inhibition by NaCN in methanol-containing complex medium. Unlike parent strain 227, acetate addition to methanol-containing media did not prevent NaCN inhibition. The specific activities of enzymes of exogenous acetate assimilation, CO dehydrogenase, and enzymes of the tricarboxylic acid cycle were similar for mutant and parent strain cell extracts. Mutation to monofluoroacetate resistance did not confer simultaneous resistance to 2-bromoethanesulfonate or pyruvate or alter propionate uptake. We conclude that strain FAr9 is either an acetate permeability mutant or is defective in an activation step required for the catabolism and anabolism of acetate. PMID- 3840475 TI - Structure of an antifreeze polypeptide and its precursor from the ocean pout, Macrozoarces americanus. AB - Serum antifreeze polypeptides (AFP) from Newfoundland ocean pout have been resolved by ion exchange chromatography and reverse phase high performance liquid chromatography into at least 12 components. The protein sequences of three of the AFP were determined using a combination of protein Edman degradation and cDNA sequencing. The AFP precursor protein encodes for a preprotein of 87 amino acids with no obvious prosequences. Two of the AFP (SP1-A and SP1-C) were separate gene products with minor amino acid sequence differences. The protein structure of SP1 C precursor is MKSVILTGLLFVLLCVDHMTASQSVVAT QLIPINTALTPAMMEGKVTNPIGIPFAEMSQIVGKQVNTPVAKGQTLMPNMVKTYVAGK. The third AFP (SP1 B) is a post-translation modification product of SP1-C. These experiments indicate that the ocean pout AFP are a multigene family with protein structure different from any other known polypeptide antifreezes. PMID- 3840476 TI - Sequence of the precursor to rat ornithine aminotransferase deduced from a cDNA clone. AB - The nucleotide sequence of ornithine aminotransferase mRNA from rat liver, including the entire coding and 3' untranslated regions, was determined from two overlapping cDNA clones. The mRNA encodes a precursor polypeptide of 439 amino acid residues with a molecular weight of 48,332. The deduced amino acid composition of the proposed mature enzyme sequence (residues 35 through 439) was in good agreement with that reported for the purified protein. The amino-terminal segment of the precursor corresponding to residues 1 through 34 has an overall positive charge, containing 6 basic residues and only a single acidic residue, and is postulated to be the mitochondrial leader sequence. The first 22 amino acid residues of the proposed leader sequences share 54% homology with the leader peptide of rat ornithine transcarbamylase precursor and more limited homology to the leader peptides of other nuclear-encoded mitochondrial matrix proteins. Homology was also observed between residues 286 through 362 ornithine aminotransferase precursor and a region containing the pyridoxyl phosphate binding domain of mitochondrial aspartate aminotransferase. PMID- 3840477 TI - Rat liver glutathione S-transferases. Nucleotide sequence analysis of a Yb1 cDNA clone and prediction of the complete amino acid sequence of the Yb1 subunit. AB - We have constructed a nearly full length cDNA clone, pGTA/C44, complementary to the rat liver glutathione S-transferase Yb1 mRNA. The nucleotide sequence of pGTA/C44 has been determined, and the complete amino acid sequence of the Yb1 subunit has been deduced. The cDNA clone contains an open reading frame of 654 nucleotides encoding a polypeptide comprising 218 amino acids with Mr = 25,919. The NH2-terminal sequence deduced from DNA sequence analysis of pGTA/C44 is in agreement with the first 19 amino acids determined for purified glutathione S transferase A, a Yb1 homodimer, by Frey et al. (Frey, A. B., Friedberg, T., Oesch, F., and Kreibich, G. (1983) J. Biol. Chem. 258, 11321-11325). The DNA sequence of pGTA/C44 shares significant sequence homology with a cDNA clone, pGT55, which is complementary to a mouse liver glutathione S-transferase (Pearson, W. R., Windle, J. J., Morrow, J. F., Benson, A. M., and Talalay, P. (1983) J. Biol. Chem. 258, 2052-2062). We have also determined 37 nucleotides of the 5'-untranslated region and 348 nucleotides of the 3'-untranslated region of the Yb1 mRNA. The Yb1 mRNA and subunit do not share any sequence homology with the rat liver glutathione S-transferase Ya or Yc mRNAs or their corresponding subunits. These data provide the first direct evidence that the Yb1 subunit is derived from a gene or gene family which is distinct from the Ya-Yc gene family. PMID- 3840478 TI - Proteoglycans from bovine nasal and articular cartilages. Fractionation of the link proteins by wheat germ agglutinin affinity chromatography. AB - Two forms of link protein, 46 and 51 kDa, are present in proteoglycan aggregates from both bovine nasal and bovine articular cartilages. Studies reported here show that the link proteins bind to concanavalin A, Lens culinaris agglutinin, Ricinus communis agglutinin, soybean agglutinin, and wheat germ agglutinin lectins. When the link proteins are eluted from these lectins with appropriate competing sugars, the 46- and the 51-kDa link proteins elute together and no separation is achieved. However, when the link proteins bound to wheat germ agglutinin are eluted with a 0 to 4 M guanidine hydrochloride linear gradient, a good separation of the 46- and 51-kDa link proteins is achieved. Wheat germ agglutinin affinity chromatography has been used on a preparative scale to isolate the 51-kDa link protein from mature bovine articular cartilage to homogeneity, in amounts sufficient to examine its effect on proteoglycan aggregate size and stability in sedimentation velocity studies. Proteoglycan aggregates were reassembled from proteoglycan monomers and hyaluronate in the absence of link protein, in the presence of both 46- and 51-kDa link proteins, and in the presence of the individual 51-kDa link protein. The sizes of the aggregates were compared in terms of sedimentation coefficients (s(0)20). The stability of the aggregates was compared in terms of the per cent aggregate present at pH 7 and 5. At pH 7, the sedimentation coefficients (s(0)20) of link free aggregates, aggregates formed with both link proteins, and aggregates formed with 51-kDa link protein were 72, 93, and 112 S, respectively. Thus, the 51-kDa link protein has a pronounced effect on aggregate size. The link-free aggregate was grossly unstable, and only 36% aggregate was present at pH 5. The aggregate formed with both link proteins was effectively stabilized against dissociation and 79% aggregate was present at pH 5. The aggregate formed with 51-kDa link protein was not effectively stabilized against dissociation, and only 60% aggregate was present at pH 5. Thus, despite its pronounced effect on aggregate size, the 51-kDa link protein does not effectively stabilize the proteoglycan aggregate against dissociation. These results suggest that the 51-kDa link protein may selectively increase aggregate size, while the 46-kDa link protein may be required to effectively stabilize the proteoglycan aggregate against dissociation. PMID- 3840479 TI - Characterization of genomic and complementary DNA sequence of human C-reactive protein, and comparison with the complementary DNA sequence of serum amyloid P component. AB - Complementary and genomic DNA clones corresponding to the human C-reactive protein (CRP) mRNA and structural gene have been analyzed and compared. Nucleotide sequencing of the coding regions of both cDNA and genomic DNA revealed an additional 19 amino acid peptide not described in the published CRP amino acid sequence. The CRP gene contains a single 278 base pair intron within the codon specifying the third residue of mature CRP. The intron contains a repetitive sequence (GT)15G(GT)3 which is similar to structures capable of adopting the Z DNA form. A comparison of CRP coding and amino acid sequences with those of serum amyloid P component revealed striking overall homology which was not uniform: a region of limited conservation is bounded by two highly conserved regions. PMID- 3840480 TI - Novel multigene families encoding highly repetitive peptide sequences. Sequence analyses of rat and mouse proline-rich protein cDNAs. AB - Multigene families encode the proline-rich proteins that are so prominent in human saliva and are dramatically induced in mouse and rat salivary glands by isoproterenol treatment and by feeding tannins. A cDNA encoding an acidic proline rich protein of rat has been sequenced (Ziemer, M. A., Swain, W. F., Rutter, W. J., Clements, S., Ann, D. K., and Carlson D. M. (1984) J. Biol. Chem. 259, 10475 10480). This study presents the nucleotide sequences of five additional proline rich protein cDNAs complementary to both mouse and rat parotid and submandibular gland mRNAs. Amino acid compositions deduced from the nucleotide sequences are typical for proline-rich proteins: 25-45% proline, 18-22% glycine, and 18-22% glutamine and generally an absence of sulfur-containing amino acids except for the initiator methionine. These proline-rich proteins display unusual repeating peptide sequences of 14-19 amino acids. The derived amino acid sequence of the cDNA insert of plasmid pMP1 from mouse has a 19-amino acid sequence which is repeated four times. The inserts of plasmids pUMP40 and pUMP4 also from mouse encode for 12 and 11 repeats of a 14-amino acid peptide, respectively. These repetitive sequences, and others from rat and mouse cDNAs and from human genomic clones, all show very high homologies and likely evolved from duplication of internal portions of an ancestral gene. Gene conversion could account for the high degree of conservation of nucleotide sequences of the repeat regions. Protein derived from the nucleotide sequences are all characterized by four general regions: a putative signal peptide, a transition region, the repetitive region, and a carboxyl-terminal region. The 5'-flanking sequences and sequences encoding the putative signal peptides are highly conserved (greater than 94%) in all six cDNAs. This sequence conservation may be important in the regulation of the biosynthesis of these unusual proteins. PMID- 3840481 TI - Nucleotide sequence of cloned cDNA for pro-opiomelanocortin in the amphibian Xenopus laevis. AB - The function of alpha-melanocyte-stimulating hormone (alpha-MSH) is not known in mammals. It is well-established in the amphibian Xenopus laevis in which alpha MSH mediates the process of adaptation to a dark background. The amino acid sequence of this hormone is, however, not known in amphibians. In order to determine the primary structure of the precursor protein for alpha-MSH, which in mammals has been called pro-opiomelancortin (POMC), we constructed a cDNA library from Xenopus pituitary mRNA. A pool of synthetic oligodeoxyribonucleotide tetradecamers corresponding to part of the mammalian alpha-MSH sequence was used to screen the library. The nucleotide sequence of a 1050-base pair hybridization positive cDNA clone was determined and the deduced amino acid sequence of Xenopus POMC revealed the sequences of Xenopus gamma-MSH, alpha-MSH, corticotropin-like intermediate lobe peptide, beta-MSH, and beta-endorphin. Interestingly, the N terminal amino acid of Xenopus alpha-MSH, which is N alpha-acetylated in the biologically active form of the hormone, is different from that of mammalian alpha-MSH. The distribution of the bioactive domains within Xenopus POMC is remarkably similar to that in other known POMC molecules and as in mammals the domains in the amphibian prohormone are flanked on both sides by pairs of basic amino acids. PMID- 3840482 TI - Generation of troponin T isoforms by alternative RNA splicing in avian skeletal muscle. Conserved and divergent features in birds and mammals. AB - We describe the isolation and sequence analysis of quail muscle cDNA clones encoding two closely related isoforms of the striated muscle contractile protein, troponin T. The cDNAs represent two troponin T mRNAs that exhibit an unusual sequence relationship. The two mRNAs have identical sequences over hundreds of nucleotides including 3' untranslated regions, but they differ dramatically in a discrete, internally located block of 38 nucleotides. The two alternative sequences of this 38-nucleotide block encode two different but related versions of amino acid residues 230-242, near the C terminus of the protein. These results are consistent with a novel mechanism of troponin T isoform generation by alternative mRNA splicing pathways from a single gene containing two different exons corresponding to amino acids 229-242, as recently proposed by Medford et al. (Medford, R. M., Nguyen, H. T., Destree, A. T., Summers, E., and Nadal Ginard, B. (1984) Cell 38, 409-421). This proposal was based on analysis of a rat troponin T genomic DNA clone and a cDNA clone corresponding to one of the two alternatively spliced mRNAs. Our analysis of quail troponin T cDNA clones, apparently corresponding to two alternatively spliced mRNA species, provides important new evidence for this novel mechanism of troponin T isoform generation and reveals the differential splicing mechanism to be of great antiquity, antedating the bird-mammal divergence. One of the quail alternative isoform sequences clearly corresponds to one of the rat sequences, but the other quail alternative sequence does not correspond to either of the rat sequences. This result suggests a greater complexity of troponin T gene structure or a greater diversity of troponin T isoform genes than is currently known, and also has implications for the functional significance of the troponin T protein isoform heterogeneity. Comparison of quail and mammal alternative isoform sequences also reveals strongly conserved features which suggest that all the isoform alternative amino acid sequences are variations on a common structural theme. PMID- 3840484 TI - Rat embryonic fibroblast tropomyosin 1. cDNA and complete primary amino acid sequence. AB - A cDNA expression library of approximately 80,000 members was prepared from rat embryonic fibroblast mRNA using the plasmid expression vectors pUC8 and pUC9. Using an immunological screening procedure and 32P-labeled cDNA probes, clones encoding rat embryonic fibroblast tropomyosin 1 (TM-1) were identified and isolated. DNA sequence analysis was carried out to determine the amino acid sequence of the protein. Rat embryonic fibroblast TM-1 was found to contain 284 amino acids and is most homologous to smooth muscle alpha-tropomyosin compared with skeletal muscle alpha- and beta-tropomyosins and platelet beta-tropomyosin. Among the various tropomyosins, two regions where the greatest sequence divergence is evident are between amino acids 185 and 216 and amino acids 258 and 284. Rat embryonic fibroblast TM-1 and chicken smooth muscle alpha-tropomyosin are most closely related from amino acids 185 and 216 compared with skeletal muscle and platelet tropomyosins. In contrast, rat embryonic fibroblast TM-1, smooth muscle alpha-tropomyosin, and platelet tropomyosin are most homologous from amino acids 258 and 284 compared with skeletal muscle tropomyosins. These differences in sequences at the carboxyl-terminal region of the various tropomyosins are discussed in relation to differences in their binding to skeletal muscle troponin and its T1 fragment. PMID- 3840483 TI - The molybdate-stabilized L-cell glucocorticoid receptor isolated by affinity chromatography or with a monoclonal antibody is associated with a 90-92-kDa nonsteroid-binding phosphoprotein. AB - We have previously reported that molybdate-stabilized cytosol prepared from 32P labeled L-cells contains two phosphoproteins (a 90-92- and a 98-100-kDa protein) that elute from an affinity resin of deoxycorticosterone-derivatized agarose in a manner consistent with the predicted behavior of the glucocorticoid receptor (Housley, P. R., and Pratt, W. B. (1983) J. Biol. Chem. 258, 4630-4635). In the present work we report that both the 90-92- and 98-100-kDa 32P-labeled proteins are also extracted from molybdate-stabilized cytosol by incubation with a monoclonal antibody and protein A-Sepharose. Only the 98-100-kDa protein is specifically labeled when either L-cell cytosol or L-cell cytosol proteins bound to the affinity resin are labeled with the glucocorticoid binding site-specific affinity ligand [3H]dexamethasone 21-mesylate. The 98-100-kDa protein labeled with [3H]dexamethasone mesylate is adsorbed to protein A-Sepharose in an immune specific manner after reaction with the monoclonal antibody. Sodium dodecyl sulfate-polyacrylamide gel analysis of the protein A-Sepharose-bound material resulting from incubating the monoclonal antibody with a mixture of 32P-labeled cytosol and [3H]dexamethasone mesylate-labeled cytosol demonstrates identity of the 98-100-kDa [3H]dexamethasone mesylate-labeled band with the 98-100-kDa 32P labeled band and clear separation from the nonsteroid-binding 90-92-kDa phosphoprotein. The results of immunoblot experiments demonstrate that the 90-92 kDa protein is structurally distinct from the 98-100-kDa steroid-binding protein. As the 90-92-kDa nonsteroid-binding phosphoprotein co-purified with the 98-100 kDa uncleaved form of the glucocorticoid receptor by two independent methods, one of which is based on recognizing a steroid-binding site and the other of which is based on recognizing an antibody binding site, we propose that the 90-92-kDa phosphoprotein is a component of the molybdate-stabilized, untransformed glucocorticoid-receptor complex in L-cell cytosol. PMID- 3840485 TI - The biosynthesis, processing, and secretion of laminin by human choriocarcinoma cells. AB - Laminin, a glycoprotein component of basal laminae, is synthesized and secreted in culture by a human malignant cell line (JAR) derived from gestational choriocarcinoma. Biosynthetically labeled human laminin subunits A (Mr approximately 400,000) and B (Mr = 200,000 doublet) are glycoslyated with asparagine-linked high mannose oligosaccharides that are processed to complex oligosaccharides before the laminin molecule is externalized by the cell. The rate-limiting step in the processing of the asparagine-linked glycans of laminin is at the point of action of alpha-mannosidase I since the principal laminin forms that accumulate in JAR cells contain Man9GlcNAc2 and Man8GlcNAc2 oligosaccharide units. The combination of subunits to form the disulfide-linked laminin molecule (Mr approximately 950,000) occurs rapidly within the cell at a time when the subunits contain these high mannose oligosaccharides. The production of laminin is limited by the availability of the A subunit such that excess B subunit forms accumulate intracellularly as uncombined B and a disulfide linked B dimer. Pulse-chase kinetic studies establish these B forms as intermediates in the assembly of the laminin molecule. The fully assembled laminin undergoes further oligosaccharide processing and translocation to the cell surface, but uncombined B and B dimer are neither processed nor secreted to any significant extent. Therefore, laminin subunit combination appears to be a prerequisite for intracellular translocation, processing, and secretion. The mature laminin that contains complex oligosaccharides does not accumulate intracellularly but is rapidly externalized upon completion, either secreted into the culture medium (25%) or associated with the cell surface (75%) as determined by susceptibility to degradation by trypsin. About one-third of the laminin molecules secreted or shed by JAR cells into the chase medium contain a smaller A subunit form that appears to have been modified by limited proteolytic cleavage. The putative proteolytic event is closely timed to the release of the laminin into the culture medium. PMID- 3840486 TI - DL-aminocarnitine and acetyl-DL-aminocarnitine. Potent inhibitors of carnitine acyltransferases and hepatic triglyceride catabolism. AB - DL-Aminocarnitine (3-amino-4-trimethylaminobutyric acid) and acetyl-DL aminocarnitine (3-acetamido-4-trimethylaminobutyric acid) have been synthesized and the interactions of these compounds with carnitine acetyltransferase and carnitine palmitoyltransferase investigated. As anticipated from the low group transfer potential of amides, carnitine acetyltransferase catalyzes the transfer of acetyl groups from CoASAc to aminocarnitine (Km = 3.8 mM) but does not catalyze detectable transfer from acetylaminocarnitine to CoASH. Acetyl-DL aminocarnitine is, however, a potent competitive inhibitor of carnitine acetyltransferase (Ki = 24 microM) and is bound to carnitine acetyltransferase about 13-fold more tightly than is acetylcarnitine, with which it is isosteric. DL-Aminocarnitine and, to a lesser extent, acetyl-DL-aminocarnitine are also inhibitors of the carnitine palmitoyltransferase activity of detergent-lysed rat liver mitochondria; in the presence of 1 mM L-carnitine, 5 microM aminocarnitine inhibits palmitoyl transfer by 64%. Significant acylation of aminocarnitine by palmitoyl-CoA was not observed. Neither aminocarnitine nor acetylaminocarnitine is significantly catabolized by mice; aminocarnitine is converted to acetylaminocarnitine in vivo. Both compounds are excreted in the urine. Mice given acetylaminocarnitine catabolize [14C]acetyl-L-carnitine and [14C]palmitate to 14CO2 more slowly than do control animals. Mice given acetylaminocarnitine and then starved are found to reversibly accumulate triglycerides in their livers; mice given the inhibitor but not starved do not show this effect. PMID- 3840487 TI - Wheat germ agglutinin blocks the biological effects of nerve growth factor. AB - The binding of nerve growth factor (NGF) to specific cell surface receptors initiates a variety of effects that lead to the morphological and biochemical differentiation of clonal pheochromocytoma, PC12, cells. The lectin wheat germ agglutinin (WGA) alters the characteristics of NGF-receptor interaction. We have found that treatment of PC12 cells with WGA dramatically and reversibly inhibits the ability of NGF to elicit three distinct biological effects characteristic of NGF action. Two of these events, the rapid ruffling of cell-surface membranes and the stimulation of the phosphorylation of a 250-kD cytoskeletal protein in situ, occur rapidly and are an immediate consequence of receptor occupancy. Both of these effects are blocked by pretreatment of the cells with WGA. WGA was also found to inhibit the NGF-stimulated regeneration of neurites that occurs over 1-2 d. Both the WGA inhibition of neurite outgrowth and the phosphorylation of the 250-kD cytoskeletal protein were reversed upon addition of the specific sugar N acetylglucosamine. These data demonstrate that the WGA-induced changes in the NGF receptor interaction reflect important alterations in the ability of the receptor to transmit biological signals, resulting in the abrogation of the biological effects of NGF on these cells. PMID- 3840488 TI - Light chain phosphorylation regulates the movement of smooth muscle myosin on actin filaments. AB - In smooth muscles there is no organized sarcomere structure wherein the relative movement of myosin filaments and actin filaments has been documented during contraction. Using the recently developed in vitro assay for myosin-coated bead movement (Sheetz, M.P., and J.A. Spudich, 1983, Nature (Lond.)., 303:31-35), we were able to quantitate the rate of movement of both phosphorylated and unphosphorylated smooth muscle myosin on ordered actin filaments derived from the giant alga, Nitella. We found that movement of turkey gizzard smooth muscle myosin on actin filaments depended upon the phosphorylation of the 20-kD myosin light chains. About 95% of the beads coated with phosphorylated myosin moved at velocities between 0.15 and 0.4 micron/s, depending upon the preparation. With unphosphorylated myosin, only 3% of the beads moved and then at a velocity of only approximately 0.01-0.04 micron/s. The effects of phosphorylation were fully reversible after dephosphorylation with a phosphatase prepared from smooth muscle. Analysis of the velocity of movement as a function of phosphorylation level indicated that phosphorylation of both heads of a myosin molecule was required for movement and that unphosphorylated myosin appears to decrease the rate of movement of phosphorylated myosin. Mixing of phosphorylated smooth muscle myosin with skeletal muscle myosin which moves at 2 microns/s resulted in a decreased rate of bead movement, suggesting that the more slowly cycling smooth muscle myosin is primarily determining the velocity of movement in such mixtures. PMID- 3840489 TI - Structure of the murine anion exchange protein. AB - A full-length clone encoding the mouse erythrocyte anion exchange protein, band 3, has been isolated from a cDNA library using an antibody against the mature erythrocyte protein. The complete nucleotide sequence has been determined. Substantial homology is evident between the deduced murine amino acid sequence and published sequences of fragments of human band 3 protein. The amino-terminal 420 and the carboxy-terminal 32 residues constitute polar, soluble domains, while the intervening 475 amino acids are likely to be intimately associated with the lipid bilayer. Hydrophobic analysis of this sequence, together with structural studies on the human protein, suggests the possibility of at least 12 membrane spans, predicting that both the amino- and carboxy-termini are intracellular. PMID- 3840490 TI - Versatile high-performance liquid chromatographic computer system for solvent delivery, gradient control and data acquisition using the Commodore 64 personal computer. AB - An interface for a high-performance liquid chromatographic system based on the Commodore 64 personal computer has been designed as an alternative to the expensive and somewhat inflexible solvent programmers and data acquisition systems offered by commercial manufacturers. The system consists of the Commodore 64 with a single disk drive and monitor, and an interface that directly controls the flow-rates of two Waters pumps for solvent delivery in either isocratic or gradient mode, as well as analog-to-digital conversion of chromatographic data and either graphic data output to a dot-matrix printer or digital-to-analog conversion for output to a chart recorder. The interface permits computer controlled flow-rates of up to 10.0 ml/min, with an accuracy of 0.0047 ml/min at flow-rates of 4.1 ml/min and an accuracy of 0.03 ml/min at flow-rates of 10 ml/min. The software for data analysis permits tabulation of elution times and areas for the peaks in a chromatogram with an option for baseline correction. The data are stored on floppy disks together with information pertinent to the chromatogram (flow-rate, solvent composition, etc.). PMID- 3840491 TI - Determination of N-5-dimethyl-9-[(2-methoxy-4-methylsulfonylamino)phenylamino]-4 acridinecarboxamide in plasma by high-performance liquid chromatography. PMID- 3840492 TI - Study of glucose and lipid metabolism by continuous indirect calorimetry in Graves' disease: effect of an oral glucose load. AB - Glucose and lipid metabolism were studied in 12 patients with hyperthyroid Graves' disease for 3 h during an oral glucose tolerance test (100 g) by continuous indirect calorimetry. In the postabsorptive state, glucose oxidation was not different from that in normal subjects, but lipid oxidation was significantly increased. Impaired glucose tolerance was found, but total glucose oxidation increased after the glucose load to 47.1 +/- 2.0 (+/- SEM) vs. 33.4 +/- 1.4 g/3 h in the control group (P less than 0.001). Total glucose oxidation corresponded, in hyperthyroid patients, to the highest rate obtained with progressively increasing insulin and glucose administration in normal man. Glucose storage was clearly lower in hyperthyroid patients. After treatment in 7 patients, glucose tolerance improved significantly, and the metabolic patterns almost normalized. In the 12 hyperthyroid patients and the 7 patients after treatment (n = 19), a correlation was found between total serum T3 concentration and both basal lipid oxidation and suprabasal glucose oxidation. It is concluded that the decrease in glucose tolerance in hyperthyroidism cannot be explained by an alteration in glucose oxidation, but, rather, by a defect in nonoxidative glucose uptake in the periphery. PMID- 3840493 TI - A long term clinical, immunological, and histological follow-up study of patients with goitrous chronic lymphocytic thyroiditis. AB - Goiter size, thyroid function, antimicrosomal and antithyroglobulin antibodies, and thyroid histology were compared in 43 patients with goitrous chronic lymphocytic thyroiditis (Hashimoto's disease) confirmed by biopsy before and after an interval of 10-20 yr. Although all were given thyroid hormone therapy, 13 patients took it infrequently, and are considered untreated. Among these 13 patients, 5 (38%) became hypothyroid, and 1 became thyrotoxic. Goiter size decreased in 17 (57%) of 30 patients during therapy and in 3 (23%) of 13 untreated patients, and the incidence of reduction was greater in treated than in untreated patients (P less than 0.05). However, in 13 (43%) of the patients, goiter size did not decrease even during treatment. Titers of antithyroid antibodies decreased in only 8 (21%) of 38 patients. There was no significant correlation between changes in antibodies and the size of goiter, and treatment with thyroid hormone did not decrease the titers of antibodies. In patients whose goiters were initially diffusely enlarged and regressed significantly in size during the follow-up period, the initial biopsies showed histological changes in diffuse lymphocytic infiltration and diffuse epithelial changes. Comparative studies of histological differences between patients who were treated with thyroid hormone and those who were not were made in the patients who had no change in goiter size during the observation period, which was greater than 10 yr. The histological changes were similar in both groups at the beginning of the study, and no significant histological changes during the period of greater than 10 yr were found in either group. In one patient who developed thyrotoxicosis after 20 yr and was rebiopsied, the histological picture was that of thyroid hyperplasia and lymphocytic thyroiditis. These data indicate that goitrous chronic lymphocytic thyroiditis changes little as a function of time in many patients regardless of whether thyroid hormone is administered. PMID- 3840494 TI - The Quebec health system: care objectives or health objectives? PMID- 3840496 TI - Intrathecal triiodothyronine administration causes greater heart rate stimulation in hypothyroid rats than intravenously delivered hormone. Evidence for a central nervous system site of thyroid hormone action. AB - To determine whether intracerebrally localized iodothyronines produce thyroid hormone-related functional effects, heart rate responses were compared in conscious hypothyroid rats given triiodothyronine (T3) by either the intrathecal or the intravenous route. A significant increase in heart rate occurred within 18 h after 1.5 nmol T3/100 g body wt was delivered intrathecally through a cannula previously placed in the lateral cerebral ventricle. Injection of the same T3 dose intravenously through an indwelling jugular catheter or injection of vehicle only by either route produced no significant increase in heart rate during the 48 h postinjection period of observation. These differences were observed even though integrated serum T3 concentrations were significantly lower after intrathecal than after intravenous T3 injection. The results indicate that thyroid hormone effects on heart rate are exerted within the brain as well as within the heart. PMID- 3840495 TI - Evidence that blood ionized calcium can regulate serum 1,25(OH)2D3 independently of parathyroid hormone and phosphorus in the rat. AB - This study asks whether arterial blood ionized calcium concentration (Ca++) can regulate the serum level of 1,25-dihydroxy-vitamin D3 [1,25(OH)2D3] independently of serum phosphorus and parathyroid hormone (PTH). We infused either PTH (bovine 1-34, 10 U/kg body wt/h) or saline into awake and unrestrained rats for 24 h, through a chronic indwelling catheter. PTH raised total serum calcium and arterial blood ionized calcium, yet serum 1,25(OH)2D3 fell from 35 +/- 6 (mean +/ SEM, n = 10) with saline to 12 +/- 3 pg/ml (n = 11, P less than 0.005 vs. saline). To determine if the decrease in serum 1,25(OH)2D3 was due to the elevated Ca++, we infused PTH into other rats for 24 h, along with varying amounts of EGTA. Infusion of PTH + 0.67 micron/min EGTA reduced Ca++, and 1,25(OH)2D3 rose to 90 +/- 33 (P less than 0.02 vs. PTH alone). PTH + 1.00 micron/min EGTA lowered Ca++ more, and 1,25(OH)2D3 increased to 148 +/- 29 (P less than 0.01 vs. saline or PTH alone). PTH + 1.33 micron/min EGTA lowered Ca++ below values seen with saline or PTH alone, and 1,25(OH)2D3 rose to 267 +/- 46 (P less than 0.003 vs. all other groups). Thus, during PTH infusion lowering Ca++ with EGTA raised 1,25(OH)2D3 progressively. There were no differences in serum phosphorus concentration or in arterial blood pH in any group infused with PTH. The log of serum 1,25(OH)2D3 was correlated inversely with Ca++ in all four groups infused with PTH (r = -0.737, n = 31, P less than 0.001), and also when the saline group was included (r = -0.677, n = 41, P less than 0.001). The results of this study indicate that serum 1,25(OH)2D3 may be regulated by Ca++ independent of PTH and serum phosphorus levels in the rat. Since 1,25(OH)2D3 regulates gastrointestinal calcium absorption, there may be direct feedback control of 1,25(OH)2D3, by its regulated ion, Ca++. PMID- 3840497 TI - A monoclonal antibody against basal cells of human epidermis. Potential use in the diagnosis of cervical neoplasia. AB - A murine monoclonal antibody was generated against human skin cells obtained from psoriatic plaques. The antibody, called VM-2, recognizes an epitope expressed on the basal cell layer of human skin and other epithelia. VM-2 also binds to cultured cells from a variety of human carcinomas including HeLa cervical carcinoma, A-431 vulvar carcinoma, A-549 lung alveolar carcinoma, and SCL-1 skin squamous cell carcinoma cells. In several primary human cell lines, including fibroblasts, endothelial cells, and cells from the hematopoietic lineage, the antigenic site recognized by VM-2 could not be detected. The cellular antigen when immunoprecipitated by VM-2 from both normal and transformed cells appears to be proteins of approximately 100,000 and 120,000 mol weight. In frozen sections from human tumor-containing tissues, VM-2 labels skin, cervical, and lung squamous carcinoma cells, as well as skin basal carcinoma cells. Malignant cells present in exfoliative smears from epidermoid invasive neoplasias of the cervix are also selectively recognized by VM-2 in distinction to normal squamous cervical cells. VM-2 is thus directed against an antigen associated with neoplastic cells when applied in selected sites of exfoliative cytology. This monoclonal antibody represents a new reagent that should prove useful in the diagnosis of cervical neoplasia. PMID- 3840498 TI - Spinal and trigeminal dorsal horn projections to the parabrachial nucleus in the rat. AB - We studied afferents to the parabrachial nucleus (PB) from the spinal cord and the spinal trigeminal nucleus pars caudalis (SNVc) in the rat by using the anterograde and retrograde transport of wheat germ agglutinin conjugated to horseradish peroxidase (WGA-HRP). Injections of WGA-HRP into medial PB retrogradely labeled neurons in the promontorium and in lamina I of the dorsal rostral SNVc, while injections into lateral PB and the Kolliker-Fuse nucleus retrogradely labeled neurons in these areas as well as in lamina I throughout the caudal SNVc and spinal dorsal horn. Injections of WGA-HRP into the caudal SNVc and dorsal horn of the spinal cord resulted in terminal labeling in the dorsal, central, and external lateral subnuclei of PB and the Kolliker-Fuse nucleus, all of which are known to receive cardiovascular and respiratory afferent information. Injections of WGA-HRP into the promontorium and dorsal rostral SNVc resulted in terminal labeling in the same PB subnuclei, as well as in the medial and the ventral lateral PB subnuclei, which are sites of relay for gustatory information ascending from the medulla to the forebrain. The spinal and trigeminal projection to PB may mediate the convergence of pain, chemosensory, and temperature sensibilities with gustatory and cardiorespiratory systems in PB. PMID- 3840499 TI - Effects of normal and pathologic eardrum impedance on sound pressure in the aided ear canal: a computer simulation. AB - Reported herein are results of computer simulations of aided sound spectra in ears with normal and pathologic eardrum impedance. The computer technique used in this study has been reported elsewhere [D. P. Egolf, D. R. Tree, and L. L. Feth, J. Acoust. Soc. Am. 63, 264-271 (1978)]. Consequently, to develop reader confidence in the computer scheme, its application to real ears was first tested. This was accomplished by (1) comparing computed spectral data with in-the-ear measurements and (2) comparing real ear minus 2-cc coupler data-both computer generated--with an idealized difference curve published elsewhere [R. M. Sachs and M. D. Burkhard, unpublished rep. no. 20022-1, Industrial Research Products, Inc., Elk Grove Village, IL (1972)]. Results indicate that the wide variation in eardrum impedance among normals evidenced in other studies produces a corresponding wide variation in aided spectrum shape. Likewise, simulations utilizing two sets of pathologic eardrum impedance data obtained from the literature show that aided sound spectra in such ears are likely to be significantly different from those occurring in normal ears. These findings suggest, as others have concluded, that there may be a substantial variation in spectrum shape among individuals wearing identically the same hearing aid--even if those individuals have normal hearing. In conclusion, questions are raised about the use of real-ear simulators and the need for a comprehensive computer based model of an entire hearing aid. PMID- 3840500 TI - High-synchrony cochlear compound action potentials evoked by rising frequency swept tone bursts. AB - The auditory compound action potential (CAP) represents synchronous VIIIth nerve activity. Clicks or impulses have been used in the past to produce this synchrony under the assumption that the wide spectral spread inherent in transient signals will activate a large portion of the cochlear partition. However, the observation that only auditory nerve units tuned above 3 kHz contribute to synchronous activity in the N1P1 complex of the CAP [Dolan et al., J. Acoust. Soc. Am. 73, 580-591 (1983)] suggests that temporal delays imposed by the traveling wave result in an asynchronous pattern of VIIIth nerve activation. In order to determine if units tuned below 3 kHz could be recruited into the CAP response, the present study uses tone bursts of exponentially rising frequency to hypothetically activate synchronous discharges of VIIIth nerve fibers along the length of the cochlear partition. The equations defining the frequency sweeps are calculated to be the inverse of the delay-line characteristics of the guinea pig cochlear partition. The resultant sweeps theoretically cause a constant phase displacement of a large portion of the cochlear partition at one time. Compound action potentials recorded in response to the rising frequency sweeps were compared to CAPs evoked by corresponding falling frequency sweeps and clicks. Analysis of the CAP waveforms showed narrower N1 widths and larger N1 and P1 amplitudes for rising sweeps when compared to falling sweeps. This is consistent with the hypothesis of increased synchrony. A further test of the hypothesis was made by using high-pass masking noise to evaluate the contributions of discrete cochlear locations to the CAP ("derived" CAP). Latency functions of the derived CAPs for clicks and falling frequency sweeps showed progressive increases in latency as the cutoff frequency of the high-pass filter was lowered. The latency of the derived CAP for these stimulus conditions reflects traveling wave delays [Aran and Cazals, "Electrocochleography: Animal studies," in Evoked Electrical Activity in The Auditory Nervous System (Academic, New York, 1978)]. In contrast, derived CAPs obtained from rising sweeps showed no change in latency for any cutoff frequencies, indicating a constant delay of response for fibers with different characteristic frequencies (CFs). These results support the theoretical premise underlying the derivation of the rising sweep: Spectral energy with the appropriate temporal organization, dictated by basilar membrane traveling wave properties, will increase CAP synchrony. PMID- 3840501 TI - Coherent active methods for applications in room acoustics. AB - An adjustment of reverberation time in rooms is often desired, even for low frequencies where passive absorbers fail. Among the active (electroacoustic) systems, incoherent ones permit lengthening of reverberation time only, whereas coherent active methods will allow sound absorption as well. A coherent-active wall lining consists of loudspeakers with microphones in front and adjustable control electronics. The microphones pick up the incident sound and drive the speakers in such a way that the reflection coefficient takes on prescribed values. An experimental device for the one-dimensional case allows reflection coefficients between almost zero and about 1.5 to be realized below 1000 Hz. The extension to three dimensions presents problems, especially by nearfield effects. Experiments with a 3 X 3 loudspeaker array and computer simulations proved that the amplitude reflection coefficient can be adjusted between 10% and 200% for sinusoidal waves at normal and oblique incidence. Future developments have to make the system work with broadband excitation and in more diffuse sound fields. It is also planned to combine the active reverberation control with active diffusion control. PMID- 3840502 TI - [Surgical treatment of the sequelae of Basedow's ophthalmopathy]. AB - Functional and cosmetic ophthalmic complications of Graves' disease are exophthalmos, eyelid retraction and oculomotor disturbances. This paper describes and takes over the surgical procedures used when these complications are associated. In severe exophthalmos, we used an orbital decompression of the orbital floor sometimes combined with the medial wall by an anterior approach. In eyelid retraction, we perform a recession of the levator muscle with scleral graft implantation. In incomitant strabismus, surgery is usually limited to recessions of the involved muscles, most of the surgery is directed to the inferior rectus and medial rectus, as these are the most commonly affected muscles. The indications depend on the status of the patient at the time of referral. For severe exophthalmos with true retraction of the upper eyelid, we begin at the first stage by treatment of the retraction and if it is not sufficient, we perform an orbital decompression at the second stage. For severe exophthalmos with oculomotor disturbances, we perform at the first stage the orbital decompression and at the second stage the strabismus surgery. For oculomotor disturbances with eyelid retraction, we perform the strabismus surgery at the first stage and the eyelid retraction at the second stage. When there is the association of exophthalmos, eyelid retraction and oculomotor disturbances, the indication and the choice of treatment are difficult and depend on numerous factors. If an orbital decompression is indicated, it will be done first, followed by the strabismus surgery and at a later stage, the eyelid retraction. If only the eyelid retraction is treated, it will be done after the strabismus surgery. The chronology of the treatment depends on the modification we observed on the other components of the ophthalmopathy when one stage treatment is performed on one component: for example orbital decompression can modify the oculomotor disturbance and oculomotor surgery can modify eyelid retraction. PMID- 3840504 TI - A program for calculating genetic distance, and its use in determining significant differences in genetic similarity between two groups of populations. PMID- 3840503 TI - Sex differences of nicotinate-induced hyperbilirubinemia in Gilbert's syndrome. Implication of bilitranslocase function. AB - Intravenous administration of nicotinic acid (NA) is followed by an increase in serum unconjugated bilirubin level. This effect is higher in Gilbert's syndrome (GS) and this test has been used in the diagnosis of the syndrome. After administration of 5.9 mumol NA/kg body weight, the maximal increment of serum unconjugated bilirubin and the area under the bilirubin concentration time curve (AUC) were significantly higher (P less than 0.01) in GS males than in GS females. The half-life of the first fast slope of plasma disappearance curve of the drug was also significantly prolonged in GS males as compared to GS females (15.91 +/- 1.12 vs 9.13 +/- 1.25 min, mean +/- SEM, P less than 0.005). The maximal bilirubin increment and AUC were linearly correlated (P less than 0.01) with NA plasma half-life. Purified preparations of bilitranslocase, a liver plasma-membrane protein involved in bilirubin and sulfobromophthalein (BSP) transport, specifically bound NA and the drug competitively inhibited BSP uptake in rat liver plasma membrane vesicles (Ki = 50 nM). These data suggest that, in addition to the hemolytic effect of the drug, NA-induced hyperbilirubinaemia could be also due to a competition between the two anions at the sinusoidal plasma membrane level. A possible implication of bilitranslocase in GS is considered. PMID- 3840505 TI - A PASCAL program that calculates heritability estimates using weighted linear regressions. PMID- 3840506 TI - BASIC programs for estimating coefficients of inbreeding, parentage, and identity. PMID- 3840507 TI - A principal component analysis program. PMID- 3840508 TI - An interactive computer program for the determination of the binding constants of monoclonal antibodies by non-linear regression analysis of radioimmunoassay data. AB - A computer program is presented for non-linear regression analysis of radioimmunoassay data, which allows the determination of the binding parameters of monoclonal antibodies, i.e., affinity constant and number of available binding sites. The program is based on the median method and gives the values of the binding constants and their 95% confidence limits, without the necessity for their preliminary, approximate evaluation. The program may also be used to determine the binding constants for the interaction of receptors with labelled ligands. PMID- 3840509 TI - Detection of eosinophils using an eosinophil peroxidase assay. Its use as an assay for eosinophil differentiation factors. AB - A colorimetric assay for peroxidase has been applied to the detection of eosinophils in bone marrow cultures and tissue cell suspensions. The substrate solution consists of 0.1 mM o-phenylenediamine in 0.05 M Tris-HCl buffer pH 8.0 containing 0.1% Triton and 1 mM hydrogen peroxide. The method is shown to be an easy and reproducible method of detecting eosinophils, with insignificant interference from neutrophils. PMID- 3840510 TI - Effect of skin temperature on selective vascular injury caused by pulsed laser irradiation. AB - The effect of skin temperature on vascular-specific injury caused by pulsed laser irradiation was examined. Ten healthy human volunteers were exposed to 1.5 microsecond pulses from a dye laser tuned to 577 nm. Compared to normothermic conditions (33 degrees C skin temperature) significantly more laser energy (p less than 0.01) was required to produce grossly visible purpura when the skin was cooled to 20 degrees C or heated to 40 degrees C. Histologically, laser-induced damage was confined to blood vessels at all three skin temperatures studied. At purpura threshold dose, there was intravascular agglutination without extravasation of red blood cells at 20 degrees C whereas at 33 degrees and 40 degrees C there was extravasation of red blood cells. PMID- 3840511 TI - [Early changes of vasoactive prostanoids in patients with mitral valve replacement]. PMID- 3840512 TI - [Studies on the significance of PLD repair for radioresistance in human uterine adenocarcinoma cells]. AB - Relationships between radioresistance of uterine adenocarcinoma cells and potentially lethal damage repair (PLDR) was studied using four human uterine carcinoma cell lines (HeLa S3, HEC-59, SNG-M and SKG-3a). The magnitude of PLDR was estimated by colony formation assay using cell densed and nutrition deficient cultured cells and transplanted cells in nude mice. PLDR of cultured cells and HeLa S3 cells in nude mice almost finished by 6 hours after irradiation. The magnitude of PLDR of HeLa S3 cells in vitro was almost the same 4-fold ratio as in vivo after radiation exposure at a dose of 5 Gray. This suggests that PLDR in vitro is correlated to that in vivo. Dose-surviving relationships demonstrated that radioresistance of four cultured cells was chiefly expressed as Do and Dq values in hit-theory and the magnitude of their radioresistance was as follows: HEC-59 greater than SNG-M greater than HeLa S3 greater than SKG-3a. On the other hand, the magnitude of their PLDR was as follows: HEC-59 greater than SNG-M greater than HeLa S3 greater than SKG-3a. This proved that the magnitude of radioresistance is correlated to that of PLDR and the more radioresistant adenocarcinoma cells have greater PLDR than squamous cell carcinoma cell. In conclusion, PLD repair may be an important cause of radioresistance in human uterine adenocarcinoma cells. PMID- 3840513 TI - A human sperm-seminal plasma common antigen expressed on sperm cell membrane. PMID- 3840514 TI - Plasma levels of protein C antigen during pregnancy and puerperium. PMID- 3840515 TI - [Flow cytometric analysis of changes in lymphocyte subsets in the blood of cancer patients during radiation therapy. 8. Special reference to OKT10+-lymphocytes]. PMID- 3840516 TI - The design and structure of clinical research information systems. Implications for data retrieval and statistical analyses. AB - Data management software designed to support clinical data bases typically provides the user with the ability to "enter" and "retrieve" information according to simple user-specified criteria. In the medical research environment, such data base management systems can be self-limiting unless the user has carefully structured the data base schema to be consistent with subsequent statistical procedures used for analysis. For statistical purposes, the data base schema must be configured such that the dependent and independent variables are structurally situated to facilitate the use of statistical application programs. Furthermore, the analysis of time-oriented, prospective studies often requires the data base to be "relational." This may be inconsistent with data collection procedures that result in "hierarchical" schemata. Methodology for ensuring compatibility between the data base schema and subsequent statistical analyses is presented using examples derived from a multicenter clinical trial of diabetes and an observational data bank approach to disease surveillance in rheumatology. PMID- 3840517 TI - RED: a red-cell antibody identification expert module. AB - We describe a software module in an expert system RED, which interprets data related to red cell antibody identification. There are three portions to this module: the problem-solving component, which incorporates the knowledge required for antibody identification as a hierarchy of programs. The programs in the hierarchy organize within themselves small pieces of knowledge represented in the form of production rules, which are capable of making judgments concerning a specific hypothesis; an intelligent data base for storage of patient data, red cell attributes, and test results; the "overview critic" portion, which combines the atomic hypotheses judged favorably by the antibody programs into a unified judgment concerning the case. Overview makes the decision to terminate processing with a conclusion about which antibodies are actually present and what specific further tests need to be performed to resolve any remaining ambiguities. PMID- 3840518 TI - Hierarchical information system for the cost analysis of clinical laboratory tests. AB - A microcomputer-based information system that integrates the concepts of text processing, data base processing, and data base analysis has been designed for cost evaluation in our laboratories. This forms a flexible package that is directed by the needs of the user. The package, which has been used to calculate various cost parameters and productivity on the basis of comprehensive data and user-defined rules, serves as a tool for good financial management at various organizational levels in the clinical laboratory. PMID- 3840519 TI - Application development approaches in a MUMPS environment. AB - A number of techniques exist to aid in the development of software applications. This paper briefly discusses the use of discrete, stand-alone packages written in MUMPS as tools for the efficient development and maintenance of applications packages. A preliminary set of requirements and a list of candidate functional clusters are included. PMID- 3840520 TI - Plotting human pedigrees. AB - The MEGADATS pedigree plotting system, described in this paper, is designed to display a human pedigree on a graphics device such as a pen plotter. The plotting algorithm, which is order n in disk reads, where n is the number of individuals, is presented. Example plots are given, including a family with multiple mates and multiple original parent pairs. PMID- 3840521 TI - Identification of neurones containing cardioacceleratory peptides (CAPs) in the ventral nerve cord of the tobacco hawkmoth, Manduca sexta. AB - The abdominal ganglion neurosecretory cells responsible for the synthesis and release of two insect neurohormones, cardioacceleratory peptides 1 and 2 (CAP1 and CAP2), from the perivisceral organs (PVOs) have been identified in the tobacco hawkmoth, Manduca sexta. Previous work established the existence of two groups of abdominal ganglion cell bodies with axons projecting to the PVO: four laterally-situated pairs and five pairs lying on the midline (Taghert & Truman, 1982b). Micro-dissection and bioassay of various parts of an abdominal ganglion revealed that CAP activity was greatest in the medial portion of the ganglion, the portion containing the 10 midline neurones. Six of the 10 midline neurosecretory cells, the new midline bilateral (MB) cells, appeared to differentiate post-embryonically, commencing differentiation late in the last larval instar and reaching maturity midway through adult development. The development of the new MB cells was mirrored by the accumulation of CAP activity in the abdominal nerve cord. Not present in measurable amounts in larvae, CAP activity was first detectable a few days after pupation and reached maximal levels midway through adult development. CAP-like bioactivity was collected from the PVO in response to antidromic stimulation of the nerve containing the new MB axons. No CAP-like bioactivity was detected in those preparations in which the new MB axons were severed or in which other nerves were stimulated. Intracellular stimulation of a new MB neurone evoked the release from the PVO of measurable levels of CAP bioactivity. It was shown that this stimulation-evoked, cardioacceleratory activity was sensitive to protease treatment, and was released only from the cell that was stimulated. On the basis of these experiments, it was concluded that the CAPs are synthesized and secreted from the new MB cells. PMID- 3840522 TI - [11th meeting of the European Club of Genetic Counseling. Lyon-Chambery, 13-15 September 1984]. PMID- 3840523 TI - Inhibition of monoamine oxidase selectively in brain monoamine nerves using the bioprecursor (E)-beta-fluoromethylene-m-tyrosine (MDL 72394), a substrate for aromatic L-amino acid decarboxylase. AB - (E)-beta-Fluoromethylene-m-tyrosine (FMMT) is a dual-enzyme-activated inhibitor of monoamine oxidase (MAO). The compound is not an inhibitor per se but is decarboxylated by aromatic L-amino acid decarboxylase (AADC) to yield a potent enzyme-activated irreversible inhibitor of MAO, (E)-beta-fluoromethylene-m tyramine, which shows some selectivity for inhibition of MAO type A. Decarboxylation of FMMT was demonstrated in vitro using hog kidney AADC and in vivo in rats by the ability of alpha-monofluoromethyldopa (MFMD), a potent inhibitor of AADC, to prevent MAO inhibition produced by FMMT. In isolated synaptosomes, FMMT was decarboxylated by AADC, and, furthermore, the compound was actively transported into these isolated nerve endings. An active transport into the CNS has also been demonstrated in vivo by performing competition experiments with leucine. To demonstrate that FMMT is preferentially decarboxylated within monoamine nerves of the CNS, the nigrostriatal 3,4-dihydroxyphenylethylamine (dopamine) pathway of rats was unilaterally lesioned with 6-hydroxydopamine or infused with MFMD. Under these conditions, MAO inhibition produced by orally administered FMMT in the striatum ipsilateral to the lesion or infusion was markedly attenuated. Combination of FMMT with an inhibitor of extracerebral AADC, such as carbidopa, protected peripheral organs against the MAO inhibitory effects and concomitantly enhanced MAO inhibition in the CNS. Such combinations had a greatly reduced propensity to augment the cardiovascular effects of intraduodenally administered tyramine, when compared with FMMT given alone or with clorgyline, a selective inhibitor of MAO type A. The results obtained with FMMT suggest the possibility of achieving selective inhibition of MAO within monoamine nerves of the CNS and, further, suggest that combination of FMMT with an inhibitor of extracerebral AADC will reduce the propensity of this inhibitor to produce adverse interactions with tyramine. PMID- 3840524 TI - Relationship between activation state of pyruvate dehydrogenase complex and rate of pyruvate oxidation in isolated cerebro-cortical mitochondria: effects of potassium ions and adenine nucleotides. AB - The relation between the activation (phosphorylation) state of pyruvate dehydrogenase complex (PDHC; EC 1.2.4.1, EC 2.3.1.12, and EC 1.6.4.3) and the rate of pyruvate oxidation has been examined in isolated, metabolically active, and tightly coupled mitochondria from rat cerebral cortex. With pyruvate and malate as the substrates, the activation state of PDHC decreased on addition of ADP, while the rates of oxygen uptake and 14CO2 formation from [1-14C]pyruvate increased. The lack of correlation between the activation state of PDHC and rate of pyruvate oxidation was seen in media containing 5, 30, or 100 mM KCl. Both the activation state of PDHC and pyruvate oxidation increased, however, when KCl was increased from 5 to 100 mM. Although the PDHC is inactivated by an ATP-dependent kinase (EC 2.7.1.99), direct measurement of ATP and ADP failed to show a consistent relationship between the activation state of PDHC and either ATP levels or ATP/ADP ratios. Comparison of the activation state of PDHC in uncoupled or oligomycin-treated mitochondria also failed to correlate PDHC activation state to adenine nucleotides. In brain mitochondria, unlike those from other tissues, the activation state of PDHC does not seem to be related clearly to the rate of pyruvate oxidation, or to the mitochondrial adenylate energy charge. PMID- 3840525 TI - Deafness in intrathecal chemotherapy. PMID- 3840526 TI - MOPP regimen as primary chemotherapy for brain tumors in infants. AB - Seventeen infants with central nervous system malignancies, all with tissue diagnosis, were treated with the combination chemotherapy nitrogen mustard, vincristine, procarbazine and a steroid (MOPP) as primary therapy following surgery. Diagnoses include: 7 astrocytomas (grade: 3-I, 3-II, 1-III), 6 medulloblastomas, 2 ependymoma/astrocytoma mixed, 1 ependymoma and 1 primitive neuroectodermal tumor. Fourteen were under 2 years of age, 2 between 2 and 3 years of age, and 1 between 3 and 4 years of age. Fifteen responded and 2 failed. Of the responders, 6 are in continuous complete remission (median duration 28.9+ months) and 9 are in relapse (median duration of remission 10.3 months). Of the 2 patients who failed and 9 who relapsed, 4 expired and 6 are living in partial or complete remission. We conclude that MOPP therapy is well tolerated, has effectiveness, and allows postponement of potentially debilitating radiotherapy in infants with brain tumors. PMID- 3840527 TI - Age-related fiber order in the optic tract of the ferret. AB - In the ferret's optic tract, the position of retinofugal fibers has been related to their relative age by preferentially labeling the oldest fibers. It has been found that fiber order perpendicular to the pial surface represents the sequence of axon arrivals in the optic tract, the fibers furthest from the pia being the oldest. Immature ferrets, less than 34 days post-conception (E34), were given intravitreal injections of lectin-bound horseradish peroxidase or of 3H-amino acids. After survival times of 24 hr or less, the contralateral optic tract was uniformly labeled, whereas with longer survival times unlabeled zones were seen next to the pial border. These unlabeled zones were largest after injections into the youngest animals but were never seen when injections were made after E34, no matter what the survival time. The unlabeled zones were seen in the tracts of animals having unlabeled regions in the periphery of the retina. The unlabeled retinal ganglion cells are interpreted as ganglion cells formed after the injection was made, and unlabeled axons next to the pia in the tract are interpreted as the axons of these youngest cells. Some irregularities in the layered arrangement of the tract are described, and the fiber order in the tract is contrasted with that in the optic nerve behind the eye. It is shown that tract order is partially independent of order in the intraorbital part of the optic nerve. Between the retina and the optic tract, a sorting of fibers occurs not only in terms of the pattern of decussation, but also in terms of fiber age. PMID- 3840528 TI - Clinical experience with sensitive thyrotropin measurements: diagnostic and therapeutic implications. AB - A two-site immunoradiometric assay for serum thyrotropin (TSH) was modified to improve the analytical sensitivity. The sensitivity achieved (detection limit, approximately 0.1 microU/ml; lower limit of quantitative measurement, approximately 0.4 microU/ml) was comparable to that of the best competitive binding research assays, yet this assay can be performed routinely. Serum TSH was 1.82 +/- 0.69 (mean +/- s.d.) (range 0.4-3.4 microU/ml) in healthy individuals and 1.83 +/- 0.90 microU/ml (range 0.7-3.7 microU/ml) in patients with nonthyroidal disorders. By contrast, 97% of clinically hyperthyroid patients (Graves' disease, toxic nodular goiter) with high serum free T4 (FT4) and T3 had suppressed serum TSH values, i.e., less than 0.3 microU/ml. Among patients with euthyroid Graves' ophthalmopathy or nontoxic goiter those clinically suspected of mild hyperthyroidism had TSH values less than 0.3 microU/ml, while those judged euthyroid had normal values. A large proportion of thyroid patients on antithyroid drugs (poorly to well-controlled) had suppressed TSH. Of Graves' patients in remission (normal FT4 and T3), 75% had normal TSH, but individual levels changed significantly over time, suggesting that a progressive decline in TSH may be useful in predicting recurrences. In hypothyroid patients taking L-T4, serum TSH was subnormal in patients with elevated FT4, but TSH was also low in six patients clinically suspected to be thyrotoxic despite normal FT4 and T3 and in 32% of asymptomatic patients with normal thyroid hormone levels. Conversely, 23% of thyroid cancer patients who had undergone thyroidectomy were taking insufficient L-T4 to completely suppress TSH secretion. In 25 individuals who underwent thyrotropin releasing hormone (TRH) stimulation tests, the baseline serum TSH value correlated well with the peak serum TSH value post-TRH (r = 0.85). We conclude that sensitive TSH measurements could establish or confirm the diagnosis of hyperthyroidism in equivocal cases, replace most TRH-stimulation tests and be of value in optimizing L-T4 suppression therapy for thyroid cancer patients post-thyroidectomy. PMID- 3840529 TI - Reconstruction algorithm for incomplete projections in the framework of linear operators in normed linear spaces. AB - Based on the linearity of the Radon transform and the convolution-backprojection reconstruction algorithm, a new linear-vector space notation is introduced that is of general use in computed tomography (CT). Using this notation, a consistency condition for the completion of incomplete projection data is described. This consistency condition leads to singular or ill-conditioned systems of linear equations for the unknown projection data. Using regularization methods, an algorithm for the consistent projection completion is presented that can exploit symmetries of the missing data region. The performance of the new algorithm is documented with simulated and actualy measured CT-projection data. The algorithm quantitatively improves CT reconstructions with realistic amounts of data and noise and can be used for the completion of arbitrary regions of missing projections. PMID- 3840530 TI - Effects of a protein-free, synthetic surfactant on survival and pulmonary function in preterm lambs. AB - We have created a totally synthetic, protein-free surfactant (Exosurf) composed of dipalmitoylphosphatidylcholine, hexadecanol, and tyloxapol. We studied the effects of endotracheal instillation of Exosurf on survival and pulmonary function of preterm lambs delivered at 131 to 133 days gestation (term 148 days). Exosurf treatment was compared with instillation of surface-active material prepared from lung lavages of adult sheep and with no instillation. Lambs were delivered by cesarean section, paralyzed, and mechanically ventilated. The Exosurf group survived longer (80% alive at 11 hours) than did the no instillation group (30% alive at 11 hours) (P less than 0.05). There were no statistically significant differences between the Exosurf and sheep surfactant groups. We conclude that Exosurf, a synthetic surfactant, produces significant improvement in survival and pulmonary function in preterm lambs. PMID- 3840531 TI - Tubulin and benzimidazole-resistance in Trichostrongylus colubriformis (Nematoda). AB - Benzimidazole treatment produced greater effects on microtubule-dependent acetylcholinesterase secretion, the presence of microtubules in intestinal cells, and colchicine binding in susceptible compared with benzimidazole-resistant Trichostrongylus colubriformis. In addition, the binding of benzimidazoles was markedly reduced in preparations from the latter strain, indicating that the mechanism of resistance to benzimidazoles in this nematode involves a reduced affinity of tubulin for benzimidazoles. PMID- 3840532 TI - Sperm and ova as property. AB - To whom do sperm and ova belong? Few tissues are produced by the human body with more waste than the germ cells. Yet dominion over the germ cells, and over the early embryo that results from their union in vitro, is behind much of the emotion that modern reproductive intervention can engender. The germ cells differ from other human tissues that can be donated or transplanted because they carry readily utilizable genetic information. Eventual expression of the germ cells' genetic potential is the legitimate concern and responsibility of their donors, although in the right circumstances the responsibility can by agreement be entrusted to institutions administering gamete or embryo donor programmes; these institutions, in turn, may need to assume responsibility for decisions if, in the case of embryo storage, the wishes of the two donors conflict. The fact of sperm and ovum ownership (and the genetic potential that goes with it) before individuals part with these tissues is beyond dispute. Some contentious issues may be clarified if this area of human dominion, namely control over genetic expression among offspring, is acknowledged to be the legitimate persisting concern of those who have produced sperm and ova after storage commences. PMID- 3840533 TI - Effect of cobalt on biliary excretion of bilirubin and glutathione. AB - Adult male rats received cobaltous chloride (250 mumol/kg, sc) at various times (1-72 h) prior to assessment of hepatic heme oxygenase activity, bile flow, biliary concentration of bilirubin-glucuronides, and hepatic and biliary glutathione concentrations. Hepatic heme oxygenase activity increased 360% 24 h after treatment but returned to control levels by 72 h. Total biliary concentrations of the mono- and diglucuronides of bilirubin (BMG and BDG) were increased 47% at 24 h and returned to control levels more slowly than did heme oxygenase. Bile flow was not significantly changed at any time. Concentrations of hepatic reduced and oxidized glutathione (GSH and GSSG) tended to increase after cobalt, but changes were not statistically significant. Biliary GSH and GSSG increased 1 h after cobalt treatment and were twice control values 3 h after treatment. These biliary glutathione concentrations declined to the control range by 6 h. These results demonstrate that increased liver heme oxygenase activity following cobalt treatment may be associated with elevated biliary excretion of bilirubin glucuronides. However, changes that occurred in biliary excretion of glutathione in response to cobalt treatment were not accompanied by parallel changes in hepatic glutathione levels. PMID- 3840534 TI - Modulation of immunoactive levels of DSIP and blood-brain permeability by lighting and diurnal rhythm. AB - The brain and plasma levels of immunoactive delta sleep-inducing peptide (DSIP) as well as the permeability of the blood-brain barrier (BBB) to radioiodinated N Tyr-DSIP (125I-DSIP) were measured at 0400, 0800, 1200, 1600, 2000, and 2400 hr in rats in a normal 12-hr-light/12-hr-dark cycle and at 0800 in rats in constant light or constant dark. Both brain and blood levels of immunoactivity showed statistically significant diurnal changes, whereas the measurement of BBB permeability varied in a regular fashion over time without the changes reaching statistical significance. Immunoactive levels of DSIP in both the plasma and the brain were higher and permeability of the BBB to 125I-DSIP increased in both the constant light and especially the constant dark groups in comparison with the cycled 0800 group. Diurnal variations continued to occur in the blood levels of immunoactive DSIP in the constant dark animals. Studies with radioiodinated serum albumin (RISA) showed that these findings did not result from a change in brain hemodynamics. Immunoactive levels of DSIP in the plasma correlated with brain immunoactive levels and with BBB permeability to 125I-DSIP. The increase in penetration of 125I-DSIP into the brain that occurred with changes in the lighting cycle appeared to be magnified by pre-treatment with aluminum. The results show interrelationships among various aspects of the neuroendocrine axis for DSIP and their modulation by physiological factors. PMID- 3840535 TI - Potentiation of the anthelmintic activity of oxfendazole by parbendazole. AB - The ability of parbendazole (PBZ) to potentiate co-administered oxfendazole (OFZ) was investigated. Administration of a range (1.35-36.0 mg/kg) of doses of PBZ with 4.53 mg OFZ/kg demonstrated that significant potentiation occurred at 4.5 mg PBZ/kg. At 4.5 mg PBZ/kg, the area under the plasma OFZ concentration curve was about twice that obtained from oral administration of OFZ alone. When tested against benzimidazole-resistant Haemonchus contortus and Trichostrongylus colubriformis, the mixture of 4.5 mg PBZ + 4.53 mg OFZ/kg was significantly more effective than 4.53 mg OFZ/kg alone, and PBZ alone showed no activity against these resistant nematodes. The demonstration of PBZ-OFZ potentiation has indicated a means of obtaining a more effective use of currently available anthelmintics in the treatment of helminthiasis. PMID- 3840536 TI - Conformational changes in Newcastle disease virus fusion glycoprotein during intracellular transport. AB - The migration on polyacrylamide gels of nascent (pulse-labeled) and more processed (pulse-labeled and then chased) forms of nonreduced Newcastle disease virus fusion glycoprotein were compared. Results are presented which demonstrate that pulse-labeled fusion protein, which has an apparent molecular weight of 66,000 under reducing conditions (Collins et al., J. Virol. 28: 324-336), migrated with an apparent molecular weight of 57,000 under nonreducing conditions. This form of the Newcastle disease virus fusion protein has not been previously detected. This result suggests that the nascent fusion protein has extensive intramolecular disulfide bonds which, if intact, significantly alter the migration of the protein on gels. Furthermore, upon a nonradioactive chase, the migration of the fusion protein in polyacrylamide gels changed from the 57,000-molecular-weight species to the previously characterized nonreduced form of the fusion protein (molecular weight, 64,000). Evidence is presented that this change in migration on polyacrylamide gels is due to a conformational change in the molecule which is likely due to the disruption of some intramolecular disulfide bonds: Cleveland peptide analysis of the pulse-labeled nonreduced fusion protein (molecular weight, 57,000) yielded a pattern of polypeptides quite different from that obtained from the more processed form of the fusion protein (molecular weight, 64,000). However, the pattern of polypeptides obtained from the nonreduced 64,000-molecular-weight species was quite similar to that obtained from the fully reduced nascent protein (molecular weight, 66,000). This conformational change occurred before cleavage of the molecule. To determine the cell compartment in which the conformational change occurs, use was made of inhibitors which block glycoprotein migration at specific points. Monensin allowed the appearance of the 64,000-molecular-weight form of the fusion protein, whereas carboxyl cyanide m-chlorophenylhydrazine blocked the appearance of the 64,000-molecular-weight form of the fusion protein. Thus, the fusion protein undergoes a conformational change as it moves between the rough endoplasmic reticulum and the medial Golgi membranes. PMID- 3840538 TI - Treatment of interstitial cystitis with the neodymium-YAG laser. AB - Five patients with severe interstitial cystitis that had not responded to conventional means of therapy were treated with the neodymium-YAG laser. Of the 5 patients 4 demonstrated cessation of severe bladder pain and frequency of urination within several days after therapy. These patients also were studied objectively by measuring bladder capacity, which was found to be increased over all. Complication rates from this modality of therapy were extremely low. The patients have been followed for 3 to 15 months after treatment and to date have had no recurrent symptoms of severe interstitial cystitis, although some have had mild recurrent voiding symptoms. PMID- 3840537 TI - Characterization of the influenza virus M2 integral membrane protein and expression at the infected-cell surface from cloned cDNA. AB - An investigation of properties of the influenza A virus M2 protein indicated that it is synthesized by 2 h postinfection together with other viral polypeptides and is transported to the infected-cell surface with a half-time of approximately 30 to 40 min. The available evidence suggests that M2 is not N-glycosylated even though it contains a potential glycosylation site, and the intracellular pattern of protein distribution includes localization to the Golgi apparatus. Proteolysis of intracellular microsome vesicles followed by immunoprecipitation with antiserum to a synthetic oligopeptide indicated that the M2 protein contains an extensive region of COOH-terminal amino acids exposed on the cytoplasmic side of the infected-cell membrane. A cDNA clone of the M2 mRNA was obtained and expressed in an SV40 recombinant vector. The M2 protein expressed by the vector became associated with the Golgi complex and was found on the surface of vector infected cells. M2 is antigenically conserved among all strains of influenza virus both in regions exposed on the cell surface and intracellularly. PMID- 3840539 TI - The use of neodymium-YAG lasers in urology: indications, technique and critical assessment. AB - After development and experimental approval of suitable equipment for endoscopic and external use, the neodymium-YAG laser has been used routinely to treat tumors of the bladder and external genitalia in our department. A 2-year followup of 60 patients revealed a significant decrease in local bladder tumor recurrence (5 per cent). Successful laser therapy also was applied in cases of stage T1/T2 penile carcinomas, female urethral carcinomas and condylomata acuminata. Laser application offers an additional useful therapeutic procedure in the treatment of urological malignancies. PMID- 3840540 TI - EQUIL2: a BASIC computer program for the calculation of urinary saturation. AB - A BASIC computer program for the calculation of urinary supersaturation with respect to the common kidney stone components is described. In vitro and in vivo tests show that the program described accurately calculates supersaturation. The application of this computer program to urolithiasis research is discussed. PMID- 3840541 TI - [Present state of the multidisciplinary treatment of locoregionally advanced breast cancer]. AB - Recent intensive combined chemotherapy regimen including adriamycin is very effective in objective regression in locoregional and distant metastatic lesions of breast cancer. This report analyses our results in treating stage III b and IV breast cancer patients by a series of treatment, namely, intensive induction therapy, subsequent mastectomy and radiotherapy, and maintenance systemic therapies such as chemical, hormonal and/or immunotherapy. And the results about similar combined treatment program in the recent reports are also discussed. This kind of multidisciplinary treatment for the patient with locoregionally advanced breast cancer (stage III b) can be expected to improve long-term results. PMID- 3840543 TI - [Image processing technics--the focus on software. 3. Standardization in medical imaging]. PMID- 3840542 TI - [Multidisciplinary treatment of choriocarcinoma]. AB - The remarkable improvement has been recently made in the treatment of choriocarcinoma, about 80% of survival rate has been achieved. This improvement was acquired according to appearance and betterment on administration method of MTX and ACTG, surgical treatment for pulmonary and cerebral metastases and irradiation for cerebral metastases. Recent died cases were analysed and divided into two groups; one group consisted of recurrent cases and the other consisted of those who, at first showed good response to therapy resulted in drop of hCG value and reduction of tumor, however, then showed gradual reincrease of hCG and expired at latt. Therefore for achieving the 0% of mortality rate, it is a important subject to exterminate the death from recurrence and clarify more aggressive treatment method at the time when reduction of the tumor is obtained. PMID- 3840544 TI - [Morphological investigation of vaginal rest (remnant of vagina) in patients with hypospadias and male hermaphrodism]. PMID- 3840545 TI - [Myocardial infarct in a patient with thyrotoxicosis]. PMID- 3840546 TI - Software simulation of the EEG. AB - The literature contains many examples of digital procedures for the analytical treatment of electroencephalograms, but there is as yet no standard by which those techniques may be judged or compared. This paper proposes one method of generating an EEG, based on a computer program for Zetterberg's simulation. It is assumed that the statistical properties of an EEG may be represented by stationary processes having rational transfer functions and achieved by a system of software filters and random number generators. The model represents neither the neurological mechanism response for generating the EEG, nor any particular type of EEG record; transient phenomena such as spikes, sharp waves and alpha bursts also are excluded. The basis of the program is a valid 'partial' statistical description of the EEG; that description is then used to produce a digital representation of a signal which, if plotted sequentially, might or might not by chance resemble an EEG, that is unimportant. What is important is that the statistical properties of the series remain those of a real EEG; it is in this sense that the output is a simulation of the EEG. There is considerable flexibility in the form of the output, i.e. its alpha, beta and delta content, which may be selected by the user, the same selected parameters always producing the same statistical output. The filtered outputs from the random number sequences may be scaled to provide realistic power distributions in the accepted EEG frequency bands and then summed to create a digital output signal, the 'stationary EEG'.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840547 TI - Analysis of radioligand binding experiments. A collection of computer programs for the IBM PC. AB - It is now well accepted that graphic methods are a poor choice of analytical technique for analyzing radioligand binding data given the complexity of some radioligand-binding sites interactions; this is true not only for studies performed at equilibrium but also for those examining kinetic properties of the radioligand. As a consequence the computer plays an important role in all forms of radioligand binding experiments because it reduces the labor-intensive calculations associated with such experiments and it allows the use of more appropriate weighted nonlinear curve-fitting techniques that more accurately describe the radioligand-binding site interaction. This paper describes a collection of four programs (KINETIC, EBDA, LIGAND, and LOWRY) that can be used to analyze most forms of radioligand binding experiments. The programs have been adapted for use on an IBM PC, which is a popular, inexpensive microcomputer and which is well suited to the analysis of radioligand binding data. PMID- 3840548 TI - Thyroiditis. AB - In summary thyroiditis runs a complete spectrum of diseases, from the potentially life-threatening to the indolent, from hyperthyroidism to hypothyroidism, from localized to diffuse disease. Because many features are shared by several different forms of thyroiditis, the clinical picture may be confusing. Overlapping hyperthyroid syndromes add complexity. Nevertheless, by careful evaluation and judicious testing, the correct diagnosis and therapy can be established. PMID- 3840549 TI - Immunologic factors in thyroid disease. AB - The role of immunologic reactions against orbital-specific and orbital-thyroid antigens in the pathogenesis of autoimmune thyroid disorders and Graves' ophthalmopathy is discussed. Possible mechanisms for the association of ophthalmopathy and autoimmune thyroid disorders is discussed in relation to the role of autoantibodies against eye muscle antigens. PMID- 3840550 TI - Methods for studying drug effects on superficial human veins. AB - Direct effects of vasoactive substances on superficial human veins in vivo can be investigated by measuring changes in the diameter of a superficial vein at a standardized congestion pressure which reflect changes in venous tone before and after local infusion of the drugs. The diameter of a superficial hand vein is measured with the aid of a linear variable differential transformer mounted directly on the back of the hand. The central core of the transformer positioned over the summit of the vein moves simultaneously with changes in venous diameter and allows continuous recording of these alterations. A series of ergot alkaloids were investigated with this technique and found to elicit a direct constrictor action when infused locally. Studies on the mode of action of the venoconstrictor effects of ergot alkaloids suggest that they are mediated by stimulation of alpha and 5-HT-receptors. Similarly, guanfacine, a centrally-acting antihypertensive drug, reduces venous compliance after direct local administration as a result of alpha-adrenoceptor stimulation. The venodilator effect of isoprenaline can be shown in veins preconstricted with noradrenaline, whereas with nitroglycerine, venodilatation is observed by local infusions in veins not preconstricted. This method is therefore useful for studying the direct effects of venoconstrictor and venodilator drugs in man. The technique can also be used to study interactions between different agents and thus to investigate the mode of action of drugs. Drugs can be infused locally at doses which do not elicit systemic effects. PMID- 3840551 TI - Design of initial dosage regimen using a programmable calculator. AB - A programmable calculator procedure for the determination of dosage regimens to achieve desired steady state concentrations is described. The dosage regimen prediction is based on data from the literature on pharmacokinetic parameters of drugs and correction factors specific for the patient's condition, such as renal failure, geriatric patient and congestive heart failure. The program is designed to generate dosage regimens based on desired steady state trough level, desired steady state peak level, desired mean steady state level, or to fluctuate between desired steady state peak and trough levels. The program can be used for I.V. and extravascular route of administration. A detailed program description and user instructions are presented and illustrated by three examples. PMID- 3840552 TI - [Replacement of the rectal ampulla]. AB - In ulcerative colitis, polyposis coli, deep seated cancer and other diseases of the rectum the bowel continuity can be restored without loss of continence, despite the removal of the entire ampulla recti. After proctocolectomy and ileoanostomy the loss of the natural receptaculum is compensated through the positioning of an ileal pouch. After total resection of the rectum and coloanal anostomosis the excised ampulla is replaced with acceptable functional results by the mobilised left colon. PMID- 3840553 TI - [Pathophysiology and morbidity of paralytic ileus (including peritonitis)]. AB - Main complication of different diseases is the paralytic ileus. The basis of all pathophysiological mechanisms is a decrease of the immune deficiency in the intestinal wall. At first the intestinal water-, electrolyte- and protein metabolism is disturbed. Secondly we can measure an endotoxinemia and a bacteriemia with all complications. In the end a complete septic shock and an insufficiency of the organ "gut" can be observed. The patients die - in absence of treatment - because of intraabdominal sepsis and peritonitis. PMID- 3840554 TI - [Value of preoperative nuclear medicine diagnosis in hyperthyroidism and thyroid cancer]. AB - The optimal diagnostic procedure before surgery in thyrotoxicosis and thyroid malignancies is a combination of scintigraphy, sonography and fine-needle aspiration biopsy. In diffuse toxic goiters the differentiation of immunogenic and non immunogenic thyrotoxicosis is predominant. In toxic nodular goiters the sonographic localisation in relation to the thyroid capsule is necessary to prevent recurrent autonomies. Malignomas should be subclassified (fine-needle aspiration biopsy, calcitonin) to differentiate between carcinomas with necessary aggressive or conservative surgical treatment. After thyroidectomy in differentiated carcinomas a high I-131-uptake requires once more surgical resection to decrease radiation exposure during I-131-therapy. PMID- 3840555 TI - [Indications for conservative and operative therapy of thyroid autonomy and Basedow hyperthyroidism from the internal medicine viewpoint]. AB - The risk of recurrent hyperthyroidism can be eliminated indefinitely in patients with autonomously functioning thyroid tissue (AFTT) by selective surgery or radioiodine, whereas medical treatment inhibits only the actual thyroid hormone over-production. Therefore, AFTT should be removed. In immunogenic hyperthyroidism the natural history of the disease can be influenced only symptomatically. The relapse rate after medical treatment is more than 50%. After surgical or radioactive therapy long-term remission of hyperthyroidism, not of the underlying thyroid disease can be achieved more effectively. Therefore surgical treatment should be preferred. PMID- 3840556 TI - [Operative strategy in thyroid autonomy and Basedow hyperthyroidism]. AB - The different extra- and intrathyroid origin of hyperthyroidism, the advantages of the surgical procedure and the criteria for the extent of thyroid resection determine the operative tactics. For both forms of hyperthyroidism we recommend a rather extended resection of the diseased thyroid gland in order to prevent recurrent hyperthyroidism and recurrent thyroid growth as well. These recurrences require subtotal thyroidectomy for Graves' disease, monolateral partial lobectomy for a so-called toxic adenoma and bilateral partial lobectomy for toxic multi nodular goiters. With these procedures lesions of the recurrent nerves and parathyroid glands can be prevented. PMID- 3840557 TI - [Nonocclusive ischemic enteropathy--a rare cause of ileus]. AB - The cause for a nonocclusive ischemic enteropathy seems to be a low cardiac output syndrome. There are often signs of a paralytic intestinal obstruction. Parameters of the blood chemistry offer no conclusive data. The angiogram of the mesenteric vessels demonstrates extensive arterial vasoconstriction as well as an obstructed venous outflow. Experimental findings disclose that this venous obstruction may be a result of an ischemic contracture in the course of a low flow state. This rigor initiates finally a thrombosis of the venoles. The rigor can be effectually mastered by energy-rich compounds. PMID- 3840558 TI - [Diagnosis of ileus using oral gastrografin]. AB - Throughout the years 1970-1983 571 patients were treated for ileus. Oral gastrografin was performed in 169 patients. This method provides definite differentiation between mechanical and functional obstruction. In patients with adhesions and recurrent incomplete obstruction, further laparotomies may be avoided in this way. PMID- 3840559 TI - In vitro histamine H2-antagonist activity of the novel compound HUK 978. AB - Histamine stimulated adenylate cyclase from guinea-pig fundic mucosa and 3H tiotidine binding in guinea-pig cerebral cortex were used to assess the in-vitro histamine H2-activity of the novel H2-antagonist HUK 978. The results showed that HUK 978 was a more potent H2-antagonist than either cimetidine or ranitidine. HUK 978 was also shown to be devoid of activity at the histamine H1-receptor, the muscarinic receptor and the alpha and beta-adrenergic receptors. PMID- 3840560 TI - Anti-secretory activity of the novel H2-antagonist, HUK 978, in rat, guinea-pig and dog. AB - The anti-secretory activity of the competitive H2-antagonist HUK 978 was determined in rat, guinea-pig and dog. In all systems examined, HUK 978 was more potent than cimetidine and ranitidine both intravenously and orally. In addition, the compound at approximately equipotent doses as these established H2 antagonists exhibited a significantly longer inhibitory profile following oral and systemic administration. Data from these pharmacological studies and the in vitro investigations previously reported, suggest that HUK 978 is a highly specific H2-antagonist and inhibits acid secretion for longer periods than other competitive compounds. PMID- 3840561 TI - Protein thiophosphorylation associated with secretory inhibition in permeabilized chromaffin cells. AB - Permeabilized cells treated with the adenosine triphosphate analog, [35S]adenosine-5'-0-(3-thiotriphosphate) ([gamma-35S]ATP), showed thiophosphorylation of a small number of cellular proteins. A 54 kilodalton (kDa) protein was heavily thiophosphorylated in unstimulated control cells and a 43 kilodalton protein was more heavily thiophosphorylated in calcium stimulated cells. Intact cells incorporated 35S into a series of higher molecular weight proteins. Stimulation of prelabelled, permeabilized cells resulted in a loss of 35S from the cells over a 20 min period. Treatment of permeabilized cells with ATP gamma S inhibited secretion and 35S incorporation into the cells. Pretreatment with ATP gamma S resulted in subsequent inhibition of both secretion and the ability of the cells to incorporate 35S from [gamma-35S]ATP. These results indicate that the sites normally available for phosphorylation were inactivated by thiophosphorylation and were unavailable to participate in the secretory process. The inhibition of secretion associated with thiophosphorylation of these proteins suggests that they may play a role in the control of secretion by chromaffin cells. PMID- 3840562 TI - [Use of radiological models for calculating the isoeffective doses of normal tissue tolerance]. AB - The potentialities of a two-component radiobiological model and empirical formulas were compared for the calculation of isoeffective tolerant doses in fractionated irradiation of the spinal marrow. The radiobiological model was shown to give more realistic isoeffective tolerant doses than the calculation using the empirical formulas. PMID- 3840563 TI - [Dispensary care for the population and automated information systems]. PMID- 3840564 TI - [Increase in tumor radiosensitivity by multiple changes in illumination schedules for animals]. PMID- 3840565 TI - A controlled study of the effects of thyrotoxicosis and propranolol treatment on mineral metabolism and parathyroid hormone immunoreactivity. AB - We studied mineral metabolism in 15 thyrotoxic patients and 15 controls matched for sex, age, and weight. Thyrotoxic subjects showed significantly higher serum calcium, phosphate, alkaline phosphatase, and globulin and lower serum creatinine, magnesium, and albumin. Parathyroid hormone immunoreactivity (iPTH) was measured with three different antisera. Thyrotoxic patients showed markedly reduced iPTH values in the most sensitive assay, a midregion-specific assay based on homologous antiserum BG-6. Antiserum 211/32 gave slightly reduced iPTH values, but antiserum NG-1 gave values that were increased by 65%. The limited sensitivity of these later two antisera, like that of others used earlier for such studies, may have blunted the apparent fall in iPTH (antiserum 211/32) or predisposed the assay to a systematic artifact (antiserum NG-1). These results show that for use in the evaluation of hypercalcemia in thyrotoxic patients, a PTH assay must first be characterized as to the expected result in uncomplicated thyrotoxicosis. Twelve of the thyrotoxic subjects entered a random order cross over study in which propranolol and placebo were given in double-masked fashion for 6 consecutive days each. Overall, the drug did not alter calcium, phosphate, or magnesium metabolism. It lowered serum calcium only in two overtly hypercalcemic subjects, whose urinary calcium excretion did not decline. These results confirm that propranolol may reduce elevated serum calcium levels in thyrotoxicosis and suggest that in this setting the drug may have a direct or indirect effect on renal calcium metabolism. PMID- 3840566 TI - Review of available Aboriginal mortality data, 1980-1982. AB - An analysis of the available population and death data confirms that the level of Aboriginal mortality is significantly higher than that of the total Australian population. The mortality of Aborigines in the Kimberley region of Western Australia in 1980-1982 was twice that of the total Australian population in 1981; for the Northern Territory, and for 14 Queensland and five South Australian Aboriginal communities the level was 3-31/2 times higher. In 1980-1981, Aboriginal mortality in country regions of New South Wales was 41/2 times the 1981 Australian total population level. In 1980-1982, specific indices of Aboriginal fetal and infant mortality in these regions and for Western Australia (excluding the Kimberley region) were generally at least 2-4 times those of non Aboriginal Australians, and up to 7 times higher for deaths occurring after the neonatal period. PMID- 3840567 TI - An analysis of aboriginal mortality in NSW country regions, 1980-1981. AB - The total number of Aboriginal deaths occurring in selected country regions of New South Wales in 1980 and 1981 has been estimated, based on the deaths reported by Aboriginal health workers and those identified on the newly modified Form of Notification of Death. Aboriginal mortality was more than four times that of the total NSW population, with young and middle-aged adults having death rates up to 12 times higher. The Aboriginal expectation of life at birth was estimated at 48 years for men and 57 years for women. The principal causes of death were diseases of the circulatory system and injuries. The effect of alcohol appeared to be substantial, particularly in the 35-44 year age group. PMID- 3840568 TI - Intraspinal morphine for postoperative analgesia. PMID- 3840569 TI - Jod-Basedow hyperthyroidism with unusual clinical manifestations. PMID- 3840570 TI - Effects of isaxonine on skeletal muscle reinnervation in the rat: an electrophysiologic evaluation. AB - Electrophysiologic detection of the first signs of gastrocnemius muscle reinnervation shows that after a single localized freezing of the rat sciatic nerve, isaxonine does not significantly increase the rate of axonal regeneration. However, this drug does significantly enhance axonal sprouting, as it induces an increase of 50% in the number of muscle fibers with multiple innervation 10-30 days after freezing. After 30 days, the proportion of multiinnervated fibers decreases in both the control and isaxonine-treated rats, and the differences between them gradually disappear. PMID- 3840571 TI - Trypanosomes of subgenus Trypanozoon are diploid for housekeeping genes. AB - The ploidy of trypanosomes has until now remained undetermined, although isoenzyme studies and direct measurements of DNA content and complexity suggest diploidy. Direct cytogenetic analysis is not possible, because the chromosomes do not condense at any stage of the cell cycle. We now present evidence from analysis of restriction site polymorphisms in and around three glycolytic enzyme genes (phosphoglycerate kinase, triosephosphate isomerase, glyceraldehyde phosphate dehydrogenase) and the tubulin gene cluster, that trypanosomes of subgenus Trypanozoon are diploid for these housekeeping genes. This result is still compatible with the single copy nature of variant surface glycoprotein (VSG) genes in Trypanozoon, if different VSG genes are present in corresponding positions on paired chromosomes. Using pulse field gradient gel electrophoresis, we show that the genes for the three glycolytic enzymes are all located in very large DNA molecules, but the gene for triosephosphate isomerase is in another fraction from the genes for the other two enzymes. Since all three enzymes are located in glycosomes, which are trypanosome microbodies, the genes for glycosomal enzymes are not all clustered in one chromosomal segment of the trypanosome genome. PMID- 3840572 TI - Tight regulation of circulating 1 alpha,25-dihydroxyvitamin D in black children. PMID- 3840573 TI - AIDS. US law delays drug testing. PMID- 3840574 TI - Expression of N-myc in teratocarcinoma stem cells and mouse embryos. AB - The N-myc gene, which is distantly related to the proto-oncogene c-myc, was first detected as an amplified sequence in human neuroblastoma cell lines and tumours. It has since been revealed that there is up to a 300-fold amplification of N-myc DNA in almost 50% of advanced metastatic human neuroblastomas, whereas amplification is not detected in less advanced tumours that have a better prognosis (ref.3 and M.S., unpublished data). Although expression of N-myc is detectable in all neuroblastoma cell lines and tumours examined, its level is greatly enhanced when the N-myc gene is amplified. Recently, it has been shown that on co-transfection with the c-Ha-ras (EJ) gene, N-myc can induce the malignant transformation of rat embryo fibroblasts. Taken together, these data imply a function for N-myc in the development and/or progression of human neuroblastomas. Surveys indicate that N-myc also may be amplified and/or expressed in two other types of human tumours and cell lines derived from them: retinoblastomas and small cell lung cancers. Here, we report that N-myc is expressed at high levels in mouse and human teratocarcinoma stem cells, thus identifying another tumour cell type that expresses the N-myc gene. In addition, we found that N-myc is abundantly expressed in mouse embryos at mid-gestation and that its expression appears to decrease as the embryo approaches term. In the adult mouse, N-myc is expressed at an approximately fivefold lower level in the brain than in teratocarcinoma stem cells and embryos, and at even lower levels in the adult testis and kidney. Our data represent the first demonstration of expression of the N-myc gene in normal cells, and suggest that N-myc may be involved in mammalian embryogenesis. PMID- 3840575 TI - Lack of relation between secondary hyperparathyroidism and red blood cell osmotic fragility in chronic renal failure. AB - The possible relationship between red blood cell (RBC) osmotic fragility and secondary hyperparathyroidism (HPT) in chronic renal failure was examined in 23 uremic patients on conservative therapy and in 42 patients on maintenance hemodialysis. Secondary HPT was evaluated by means of serum biochemistry (parathyroid hormone, calcium, phosphorus, and alkaline phosphatase) and radiographic examinations (X-ray films of the hand skeleton). This study showed increased RBC osmotic fragility in uremic patients when compared with controls, with no difference between those on conservative therapy and those on maintenance hemodialysis. No correlation between RBC osmotic fragility and the hematochemical changes associated with secondary HPT was found. No difference in RBC osmotic fragility was observed with regard to the activity (alkaline phosphatase) and the severity (X-ray findings) of secondary HPT. Effective treatment of secondary HPT by either pharmacological means (1,25-dihydroxycholecalciferol) or surgical removal was not associated with consequent improvement in RBC osmotic fragility. It is concluded that secondary HPT is probably not a major factor influencing RBC osmotic fragility in chronic renal failure. PMID- 3840576 TI - Minerals and bone-modulating hormones in children on continuous ambulatory peritoneal dialysis. AB - Peritoneal fluxes of minerals and bone-modulating hormones and their impact on corresponding serum levels and bone mineralization in 7 children on continuous ambulatory peritoneal dialysis (CAPD) were studied. Most mass transfer studies revealed modest losses of calcium into peritoneal effluents. Peritoneal losses of phosphorus and magnesium, although substantial, were not sufficient to normalize hyperphosphatemia and hypermagnesemia in most patients. Parathormone and vitamin D metabolites (25-hydroxyvitamin D and 1,25-dihydroxyvitamin D) were readily detectable in peritoneal effluents. Improved bone mineral content, by sequential densitometries, was associated with amelioration of hyperparathyroidism. These data suggest that CAPD in children induces an overall improvement of disturbed mineral metabolism; nevertheless, peritoneal losses of calcium and vitamin D metabolites must be considered and replenished appropriately. PMID- 3840577 TI - Assessment of learning abilities using complex experimental learning tasks. AB - Efforts are underway to develop a computerized methodology for the reliable, valid measurement of learning abilities. Central to these research efforts are the development of Complex Experimental Learning Tasks (CELTs) that provide real time samples of learning. Objectives of current studies are the determination of relationships between performance on CELTs and performance on traditional cognitive abilities tests and the exploration of predictive value of measures of learning ability for academic performance. After construct and predictive validity are established, this methodology may be applicable to a wide range of assessment situations, including testing for the effects of environmental toxicants on learning abilities. PMID- 3840578 TI - PEARL II: portable laboratory computer system for psychophysiological assessment using event related brain potentials. AB - The PEARL II portable laboratory computer integrates hardware and software to serve as an on-line, realtime, experimental control and data acquisition system. Although the system can be used in many areas of research, PEARL II development has emphasized investigation of physiological responses from human subjects performing complex experimental tasks. PEARL functions as a "turn-key" system which performs standard neurological tests that would be employed, for example in neurotoxicological assessment. The PEARL system also includes several psychophysiological tests used in human engineering research on performance workload assessment. PEARL can also serve as a tool in basic research on human psychophysiology. The special feature of the PEARL test battery is its suitability for the measurements of event-related brain potentials (ERPs) in these tasks, although other physiological indices such as heart rate may be monitored. In addition, the PEARL system includes a versatile library of laboratory control subroutines that can be used to develop new applications. PMID- 3840579 TI - The Walter Reed performance assessment battery. AB - This paper describes technical details of a computerized psychological test battery designed for examining the effects of various state-variables on a representative sample of normal psychomotor, perceptual and cognitive tasks. The duration, number and type of tasks can be customized to different experimental needs, and then administered and analyzed automatically, at intervals as short as one hour. The battery can be run on either the Apple-II family of computers or on machines compatible with the IBM-PC. PMID- 3840580 TI - [Relief of experimental cerebral vasospasm by the intrathecal administration of a calcium antagonist (diltiazem)--in comparison with intra-arterial administration]. AB - The effect of an intra-arterial administration of diltiazem on experimental cerebral vasospasm was previously reported by us. In the present study, the effect of diltiazem on cerebral vasospasm, intracranial pressure and systemic blood pressure were investigated using dogs. Cerebral vasospasm was induced by an injection of 5 ml of autologous blood into the cisterna magna. Diltiazem (10(-6) M) was administrated into the cisterna magna and the dilating effect of the drug on the basilar artery was monitored angiographically. The intrathecal administration of diltiazem relieved the vasospasm for more than 30 minutes, same as that of the intra-arterial administration. However, the intracranial and blood pressures remained unchanged. The changes of concentration of the drug in CSF and plasma following the intracisternal administration of 14C-diltiazem were measured using rabbits. The concentration of an administered diltiazem in CSF and plasma was quickly decreased and reduced to 2% of its initial value after one hour (t1/2 = 8 min). Our results show that even the concentration of diltiazem is very low in CSF, the vasodilating effect continues for more than 30 min. This suggests that the intrathecal administration of diltiazem may be useful for the prevention and treatment of the cerebral vasospasm following subarachnoid hemorrhage. PMID- 3840581 TI - Pathophysiology of the adult respiratory distress syndrome (ARDS) and multiple organ failure (MOF)--a hypothesis. AB - A review of the recent literature concerning the Adult Respiratory Distress Syndrome (ARDS) and Multiple Organ Failure (MOF) is presented. We hypothesize that the two syndromes probably have a common pathophysiology, with ARDS as the first occurring organ failure. The clinical situations that may cause ARDS and MOF are characterized by massive and prolonged activation of the complement system. This results in activation of granulocytes with ensuing release of lysosomal enzymes, toxic oxygen products and prostaglandins, which collectively cause endothelial damage and permeability changes. In the lungs interstitial and alveolar edema develops, with an impaired alveolo-capillary gas exchange. Oxygen diffusion in the peripheral tissues is impeded by the same mechanism, ultimately resulting in organ failure. Hypoxia may cause additional microvascular lesions, as toxic oxygen radicals are produced during reoxygenation. The implications of this hypothesis for the prevention and therapy of ARDS and MOF are discussed. PMID- 3840582 TI - Efferent connections of the claustrum to the posterior thalamic and pretectal region in the rat. AB - Injection of the fluorescent retrograde tracers Fast Blue and Diamidino Yellow in the posterior thalamic and anterior pretectal region of rats resulted in significant retrograde neuronal labeling of the ipsilateral claustrum. The labeled cell bodies were especially abundant in the central third of the claustrum, while the rostral and caudal portions of the nucleus contained only few fluorescing cells. Thus, in addition to the major reciprocal connections of the claustrum with the cerebral cortex, a substantial number of claustral neurons project to the posterior thalamic and anterior pretectal region. Unlike the cortico-claustrocortical loop, this connection appears to be only ipsilateral. PMID- 3840583 TI - Pulmonary surfactant release in fetal rabbits as affected by enprofylline. AB - At a gestational age of 27.9 days, pregnant rabbits were infused with enprofylline, a new xanthine with potent antiasthmatic effects. Following a priming dose of 5 mg/kg, 20 mg/kg were infused over a 2-h period. Controls received Ringer's solution. On completion of the infusion, the fetuses were delivered and the effect on their surfactant system was evaluated. Surface tension in airway fluid, measured with the pulsating bubble surfactometer, at minimal bubble size in the third cycle, was 21.8 +/- 2.2 (mean +/- SE) versus 28.7 +/- 1.7 mN m-1 (p less than 0.01). Pressure-volume loops of the lungs of the fetuses showed that at a deflation pressure 10 cm H2O the volume was 64 +/- 3 versus 49 +/- 3% (p less than 0.0005). The lung lavage fluid had a phospholipid phosphorus content of 41.9 +/- 3.8 versus 18.5 +/- 1.3 micrograms/g dry lung (p less than 0.0005). The values indicate that enprofylline caused a release of surfactant into the fetal airways. PMID- 3840584 TI - Two-site "simultaneous" immunoassay with monoclonal antibodies for the determination of surfactant apoproteins in human amniotic fluid. AB - Monoclonal antibodies against human surfactant apoproteins were prepared, which recognized 37, 34, and 62 kilodalton proteins in human lung lavage fluid and amniotic fluid. Two-site "simultaneous" immunoassay for the surfactant apoproteins was developed using the monoclonal antibodies. The assay was capable of measuring 10-640 ng of the apoproteins per ml of human amniotic fluid. The immunoassay was used to quantitate the apoproteins in 59 amniotic fluid samples from 23 to 41 wk gestation. The concentration of the surfactant apoproteins at less than 30 wk gestation was very low (mean 0.84 micrograms/ml). It then increased 6.5-fold from 34 to 36 wk gestation and 15.5-fold at more than 37 wk gestation. The simultaneous immunoassay with the monoclonal antibodies presented herein seems to be ideal for clinical use because of its high specificity, sensitivity, rapidity, simplicity, and a continuous unlimited supply of the antibodies. The results in this study show that the clinical use of the two-site simultaneous immunoassay with monoclonal antibodies to pulmonary surfactant apoproteins can predict fetal lung maturity more precisely. PMID- 3840586 TI - Etiology of ventricular septal defects: an epidemiologic approach. AB - To investigate the recent 150% increase in the reported incidence of ventricular septal defects (VSDs) in the United States, the epidemiology of ventricular septal defects was examined. The apparent incidence of VSDs is highly dependent on case finding methods, and more complete diagnosis and reporting probably account for the increase in reported incidence. Variations in case ascertainment also account for the small differences in incidence in studies from different places. The several known risk factors for VSD, including a family history of congenital heart disease and exposure to certain drugs, infectious agents, and maternal metabolic disturbances, explain few cases. Incidence rates are similar in different races and seasons and are unrelated to maternal age, birth order, sex, and socioeconomic status. VSDs occur naturally in a wide range of mammals and in birds, which also have four-chambered hearts. Despite identical genes and similar prenatal environments, the concordance rate in identical twins is only about 10%. The consistency of incidence among individuals with widely differing genes and environments and the frequency of discordance in identical twins suggest that VSDs often occur as random errors in development, at a frequency largely determined by the complexity of normal cardiac morphogenesis. This hypothesis has two major implications: many VSDs are not preventable and parents need not feel responsible for VSDs in their children. PMID- 3840585 TI - The contractility and performance of the preterm left ventricle before and after early patent ductus arteriosus occlusion in surfactant-treated lambs. AB - The influence of left-right ductal shunting on early hemodynamic responses, namely left ventricular performance, contractility, and systemic perfusion was evaluated in nine preterm lambs (120 days gestational age) treated with surfactant. Blood gases were maintained in the physiological range using mechanical ventilation; hemodynamic and blood flow measurements (radionuclide labeled microspheres) were obtained before and after occlusion of the patent ductus arteriosus with a catheter balloon. The mean left-right ductal shunt before occlusion (1.2 h postnatal age) was 59 +/- 11% SD. Left ventricular output was increased in all lambs with PDA (pre: 306 +/- 106 versus post: 155 +/- 31 ml/min/kg; p less than 0.001); effective systemic blood flow and organ blood flows did not change. The left ventricle end-diastolic volume was increased in all and decreased following ductal occlusion (pre: 2.0 +/- 0.4 versus post: 1.5 +/- 0.2 ml/kg; p less than 0.01). Cardiac rate, ejection fraction, and contractility (peak dP/dt) did not change. Right-left ductal shunting was not detected in six similarly treated lambs. Thus, during the 1st h of life the hemodynamic profile of preterm lambs with patent ductus arteriosus was characterized by large magnitude left-right shunt and a "high" cardiac output state sufficient to maintain unchanged systemic perfusion. The increased left ventricle output was accomplished by increasing end-diastolic volume (Frank Starling mechanism), but left ventricle contractility remained unchanged. We speculate that the preterm left ventricle may be unable to sustain the high level of pump performance and contractility required to compensate for the ductal "steal" of systemic blood flow. PMID- 3840587 TI - Nucleotide sequence and genome organization of carnation mottle virus RNA. AB - The complete nucleotide sequence of carnation mottle genomic RNA (4003 nucleotides) is presented. The sequence was determined for cloned cDNA copies of viral RNA containing over 99% of the sequence and was completed by direct sequence analysis of RNA and cDNA transcripts. The sequence contains two long open reading frames which together can account for observed translation products. One translation product would arise by suppression of an amber termination codon and the sequence raises the possibility that a second suppression event could also occur. Sequence homology exists between a portion of the carnation mottle virus sequence and that of putative RNA polymerases from other RNA viruses. PMID- 3840588 TI - Nucleotide sequence of a gene from chromosome 1D of wheat encoding a HMW-glutenin subunit. AB - A high molecular weight glutenin gene in hexaploid wheat has been isolated by cloning in bacteriophage lambda and characterized. The gene corresponds to polypeptide 12 encoded by chromosome 1D in the variety "Chinese Spring". The coding sequence predicted contains seven cysteine residues six of which flank a central repetitive region comprising more than 70% of the polypeptide. These findings are related to the role of high molecular weight subunits in the viscoelastic theory of gluten structure. PMID- 3840589 TI - Cloning of eukaryotic protein synthesis initiation factor genes: isolation and characterization of cDNA clones encoding factor eIF-4A. AB - Monoclonal antibodies directed against rabbit reticulocyte protein synthesis initiation factor 4A (eIF-4A) were used to isolate mouse cDNA clones expressing eIF-4A protein sequences in E. coli. The identity of cDNA clones encoding eIF-4A sequences was confirmed by hybrid-selected translation and peptide mapping of the translation product. Analysis of the mRNA coding for eIF-4A from mouse liver and HeLa cells by Northern hybridization revealed two discrete mRNA species of approximately 2000 and 1600 nucleotides in length. The existence of two mRNAs in mouse and HeLa cells encoding eIF-4A was confirmed by cDNA sequencing. PMID- 3840590 TI - Mechanism of translational coupling between coat protein and replicase genes of RNA bacteriophage MS2. AB - We have analyzed the molecular mechanism that makes translation of the MS2 replicase cistron dependent on the translation of the upstream coat cistron. Deletion mapping on cloned cDNA of the phage shows that the ribosomal binding site of the replicase cistron is masked by a long distance basepairing to an internal coat cistron region. Removal of the internal coat cistron region leads to uncoupled replicase synthesis. Our results confirm the model as originally proposed by Min Jou et al. (1). Activation of the replicase start is sensitive to the frequency of upstream translation, but never reaches the level of uncoupled replicase synthesis. PMID- 3840592 TI - Intertriginous dermatoses. Common puzzling problems. AB - Physical examination of the skin is the most important step in differentiating intertriginous dermatoses. Once the eruption is recognized as a primarily intertriginous problem, the diagnostic possibilities are comparatively limited. Determination of the primary lesion (eg, blister, scale, nodule), together with some history and simple diagnostic tests, can usually pinpoint the specific diagnosis. PMID- 3840591 TI - Study of the expression of myelin proteolipid protein (lipophilin) using a cloned complementary DNA. AB - We have prepared a lambda gt10 cDNA library with the mRNA isolated from fetal calf brains which were actively myelinating. Using two oligonucleotides made according to the known amino acid sequence of myelin proteolipid protein (PLP or lipophilin), we have isolated several cDNA clones for this major intrinsic membrane protein of myelin. One of these clones, designated as pLP1, is found to contain 444 bp of coding sequence for the C-terminal half of PLP and 486 bp of 3' untranslated sequence. Using pLP1 as a hybridization probe, we have studied the regulation of PLP at the mRNA level during rat brain development. Our results show that the relative amounts of mRNA for PLP and that for the major extrinsic protein of the myelin membrane, myelin basic protein, increase coordinately during the course of myelination in the brain. PMID- 3840593 TI - Cutaneous features of sexually transmitted diseases. Recognition and treatment. PMID- 3840594 TI - Effect of local irradiation on cranial skeletal growth sites in the rat. PMID- 3840596 TI - Free radicals and protein degradation in human red blood cells. AB - Human red blood cells (RBC) were exposed to oxygen-based free-radicals, and other activated oxygen species generated during incubation with xanthine plus xanthine oxidase (X+XO). Oxygen-radical exposure induced up to 30 fold increases in human RBC protein degradation, compared to 12 fold increases in rabbit RBC protein degradation. Protein degradation increased as a function of X+XO, but demonstrated saturation kinetics at higher XO concentrations. The presence or absence of an energy substrate (glucose) had no effect on protein degradation, indicating the possible role of ATP-independent proteinolytic systems. It is proposed that human RBC proteins can be oxidatively damaged by certain free radicals, and that the oxidized proteins are specifically recognized and degraded by intracellular proteinolytic systems. PMID- 3840595 TI - Shape of vertebrae--an application of a generalised method. PMID- 3840597 TI - [Thrombogenic abnormalities of hemostasis. Practical implications]. PMID- 3840598 TI - [Antithrombin III deficiency induced by heparin and constitutional protein C deficiency. Apropos of a case]. AB - Major mesenteric venous thrombosis in a young man who had already had spontaneous thromboembolic accidents prompted the diagnosis in 1982 of 'Antithromin III' deficiency. The initial reduction of this inhibitor proved to be secondary to a consumption raised abnormally by Heparin. Research into the family antecedents made it possible in 1983 to discover a constitutional 'Protein C' deficiency without stopping the antivitamins K for this patient. PMID- 3840599 TI - [2 cases of recurrent deep venous thrombosis with protein C deficiency]. AB - Because of their gravity and the complications involved, repeated deep venous thromboses require everything to be done to produce an aetiological diagnosis, for only this will make a preventive treatment possible. Amongst causes of phlebitis, haemostatic disorders and coagulation factor anomaly should be systematically looked for, as these can sometimes be corrected. Following the discovery of the Antithrombin III deficiency, the protein C deficiency shows clear progress along these lines. The author here describes two cases of the protein C deficiency in patients who have suffered repeated deep and superficial venous thrombosis, with thromboembolic family antecedents. PMID- 3840600 TI - The clinical and metabolic responses to early surgical treatment for hyperthyroid Graves' disease: a comparison of three pre-operative treatment regimens. AB - We have compared the clinical and metabolic responses of three groups of patients undergoing subtotal thyroidectomy for hyperthyroid Graves' disease. These patients were prepared for surgery with propranolol alone, propranolol plus potassium iodide or the long acting beta-adrenoceptor antagonist nadolol plus potassium iodide. Pre-treatment with potassium iodide reduced serum T4 to normal or subnormal in all patients. Patients in the propranolol group had significantly higher pulse rates and temperatures after operation and one patient developed an exacerbation of the hypermetabolic state. The perioperative rise in serum cortisol and blood glucose was delayed in patients in the propranolol group and this was also noted in one severely hyperthyroid patient on propranolol + potassium iodide. Nadolol was administered once daily as compared to multiple daily doses with propranolol. Despite this, plasma nadolol levels were consistently higher throughout the perioperative period while propranolol levels in patients on both propranolol alone and propranolol + potassium iodide were highly variable and sometimes undetectable. We conclude that, in the rapid preparation of patients with hyperthyroid Graves' disease for surgery, the combination of nadolol + potassium iodide has significant advantages over the other two regimens. PMID- 3840601 TI - [Critical evaluation of the Abbott MS-2 automatic system in the rapid determination of antibiograms]. AB - The Abbott MS-2 system for rapid determinations of the bacterial growths in the kinetic mode is briefly described. Some details of the operations of the apparatus and about the experimental procedure are given by referring to a phenomenological description for the bacterial growth. A critical analysis of the antimicrobic susceptibilities and of the minimum inhibiting concentrations (MIC) provided by the apparatus is also carried out. In particular the problems arising for cephalosporins is emphasized. PMID- 3840602 TI - Sarcoidosis and Hashimoto's thyroiditis--a chance occurrence? AB - We present a case of pulmonary sarcoidosis associated with Hashimoto's thyroiditis. This association has been reported previously and may be purely coincidental. However, in light of current knowledge about the immunoregulatory defects postulated for sarcoidosis and for Hashimoto's thyroiditis, three other possibilities that may explain this association in our patient, are discussed. PMID- 3840603 TI - Leakage of protein in the immature rabbit lung; effect of surfactant replacement. AB - Immature newborn rabbits, delivered on day 27 of gestation, were ventilated artificially for 60 min, with or without previous treatment with natural surfactant. Insufflation pressure was adjusted to maintain an average tidal volume of about 10 ml/kg. All animals received, before the onset of ventilation, 125I-labeled albumin via the airways and 131I-labeled albumin intravenously. At the end of the experiment 3.1 +/- 1.3% (means +/- SD) of the 131I-albumin had permeated into the alveolar compartment of control animals; the corresponding figures for surfactant-treated animals were 1.7 +/- 0.8% (P less than 0.002). In control animals only 18.2 +/- 4.4% of the 125I-albumin could be recovered from the airspaces after 60 min, whereas 69.9 +/- 14.6% of this label was recovered in surfactant-treated animals (P less than 0.002). Alveolar wash samples from control animals also contained significantly increased activity of surfactant inhibitor, as evaluated with pulsating bubble. The bidirectional flux of protein, including surfactant inhibitor, was thus significantly decreased in these immature lungs by surfactant replacement. PMID- 3840604 TI - Computer assistance for C.T. scan interpretation and cerebral disease diagnosis. AB - This paper describes the development and use of a system to aid in the radiological interpretation of C.T. scan images of patients with cerebral disease. The system is able to provide guidance, both on diagnosis and the need for further scan investigations. Explanation and help facilities, similar to those found in certain rule-based expert systems, are available on demand. Diagnostic and other advice is, however, based on hard statistical data. The scan interpretation and diagnostic system offers important benefits in the training of less experienced radiologists. PMID- 3840605 TI - [Surgical treatment of hyperthyroid struma: surgery results, postoperative long term course and study of a factor connected with recurrences]. AB - None of the 335 patients thyroidectomized for hyperthyroidism in our department of surgery between 1972 and 1982 died as a consequence of the operation. Reassessment of 226 of these patients by questionnaire 68 +/- 25 (SD) months after thyroidectomy revealed the following complications: postoperative paresis of the recurrent nerve (9%), persistent change of voice (2%), and persistent hypoparathyroidism (3.5%). 91 patients underwent a follow-up investigation 74 +/- 33 months after thyroidectomy. Only one had recurrent hyperthyroidism but 6 had a recurrence of the goiter. Patients with recurrent goiters had a significantly higher frequency of increased serum thyroglobulin levels than patients without goiters. These results emphasize the effectiveness of surgical therapy in hyperthyroidism, and suggest that serum thyroglobulin might be a useful predictor for goiter recurrence. PMID- 3840606 TI - Assignment of the gene for myelin proteolipid protein to the X chromosome: implications for X-linked myelin disorders. AB - Several inherited disorders in humans and in rodents result in myelin dysgenesis and a deficiency of the molecular constituents of myelin. A complementary DNA to one of the two major myelin proteins, myelin proteolipid protein (also known as lipophilin), has been used with Southern blot analysis of somatic cell hybrid DNA to map the human proteolipid protein gene to the middle of the long arm of the human X chromosome (bands Xq13-Xq22) and to assign the murine proteolipid protein gene to the mouse X chromosome. Comparison of the gene maps of the human and mouse X chromosomes suggests that myelin proteolipid protein may be involved in X linked mutations at the mouse jimpy locus and has implications for Pelizaeus Merzbacher disease, a human inherited X-linked myelin disorder. PMID- 3840607 TI - The power to pollute and the power to preserve: perceptions of female power in a Hindu village. AB - In traditional Hindu village society, women are seen as having the power to pollute men. Such beliefs denigrate certain aspects of female sexuality. A detailed examination of these beliefs reveals that female sexuality is only associated with pollution and negative forces when women become estranged from men through their biology or other circumstances. When associated with pollution women are perceived as being in danger as well as endangering others. In contrast when women identify their interests with men's they are not in danger and can exercise positively valued powers such as the power to preserve life. The nexus of beliefs connected with female pollution and other mystical powers encourages women to subordinate their interests to men's. PMID- 3840608 TI - [Various prognostic factors in lymphosarcoma of the large intestine]. PMID- 3840609 TI - [Etiology and pathogenesis of diffuse toxic goiter]. PMID- 3840610 TI - [Epidemiological aspects of data banks and biological banks]. AB - Human epidemiology differs from studies on health care. Epidemiology is an observational type of research, and partially a substitute for experimental investigations which are seldom possible in the human situation. Another difference from the human situation are privacy features both on the level of individuals and on that of organisations. This is in contrast with herd books, artificial insemination banks and slaughterhouse data bases in animals. In view of these differences and limitations, the largest potential for veterinary epidemiology would appear to lie in the fields of data and biological banking. Instances of the routine collection of data to monitor disease in human individuals are presented. The use of biological banks is discussed: blood, urine, nails, etc., are collected from a cohort of (still) normal animals in this case. This is done in order to use them after follow-ups to determine pre diagnostic levels and changes in biological parameters in retrospect. This approach, consisting in case-control studies within a cohort combines the advantages of the two methods of investigation, namely the longitudinal aspect which makes it possible to answer post-propter questions and the cost-saving aspect of confining biochemical analysis to cases alone and the controls proper to these cases. Drawbacks to the two separate techniques, such as an expensive complete follow-up and selection bias problems, are ruled out in this manner. PMID- 3840611 TI - Treatment of bovine parasitic otitis using ivermectin. PMID- 3840612 TI - Evaluation of the antiemetic activity of bromopride in cancer patients treated with i.v. CMF. AB - In more than 70% of patients undergoing surgery for breast cancer with histologically positive lymph nodes, precautional therapy with CMF (cyclophosphamide, methotrexate, 5-fluorouracil) causes nausea and vomiting. At the present time, the optimal antiemetic therapy has not been found. From May 1983 to March 1984, 35 patients, of whom 34 were evaluable, were entered in a randomized double blind antiemetic treatment with either bromopride (16 patients), a procainamide derivative structurally similar to metoclopramide, or placebo (18 patients). Bromopride (20 mg) and the placebo were administered in a 3-min i.v. injection half an hour before chemotherapy and at 3 1/2 and 7 1/2 following chemotherapy. A complete antiemetic protection was obtained in 9 patients (56.3%) treated with bromopride compared to 5 patients (27.8%) treated with the placebo. A major antiemetic (less than or equal to 2 vomiting episodes) was obtained in 3 patients (18.7%) treated with bromopride compared to 5 patients (27.8%) treated with the placebo. Statistical analysis showed a trend in favor of bromopride (P = 0.058). The most frequent side effect was sedation reported in 6 patients (37.5%) treated with bromopride and 2 patients (11.1%) treated with the placebo (P = 0.06). The study was interrupted when several patients presented vomiting episodes more than 12 h after CMF administration, and thus beyond the foreseeable protective effect of the antiemetic treatment. It is our opinion that the search for an optimal antiemetic regimen in the course of i.v. CMF therapy should consider the administration of antiemetic drugs at least until 12 h after chemotherapy. PMID- 3840613 TI - [New observations on fetal liver cirrhosis associated with hereditary tyrosinemia]. PMID- 3840614 TI - [Use of T-activin for immunoregulation in recurrent ophthalmoherpes]. PMID- 3840615 TI - [Evaluation of analgesia after administration of morphine into the peridural space during thoracic surgery]. PMID- 3840616 TI - [Prevention of dynamic intestinal obstruction in children with peritonitis]. AB - In order to prevent the development of the dynamic intestinal obstruction the prolonged peridural blockade, intravenous and intraaortal injection of the solution of novocain were used with reference to the phase of the pathological process. Results of the examination of 200 patients has shown that these measures facilitate passage of flatus and stools, shortens the staying of the patients at the hospital and reduces the amount of postoperative complications and lethality. PMID- 3840617 TI - RESPITE--a computer-aided guide to the prevalence of pneumonia in pig herds. AB - An interactive computer-based guide (termed RESPITE) was developed to demonstrate to pig producers the expected level of pneumonia in pig herds which follow specified management practices known to influence the severity of pneumonia problems. A program was used to evaluate the combined effect of known risk factors present in the particular herd on the prevalence of lung lesions in slaughter pigs. The expected prevalence was estimated using formulae that were derived from observations and data in the published literature. Eleven risk factors considered are the number of pigs in the same room, all-in/all-out versus continuous flow of pigs, closed versus open herd, temperature fluctuation ratio, width of the buildings, space allotted per pig, the type of partitions separating adjacent pens, the presence or absence of diarrhoea as a clinical problem, liquid versus solid manure disposal, ascarid control efficiency, and the presence or absence of active Aujeszky's disease in the herd. Each of the factors can be assessed in the farrowing, nursery and grow-finish stages of production and the appropriate observations are entered. The computer uses the data to calculate the expected prevalence of pneumonia in animals leaving that stage of production. Of the pneumonia developing in the farrowing, nursery and grow-finish stages, 90 per cent, 75 per cent and 25 per cent respectively is considered to resolve before slaughter inspection at 100 kg. Adjusting for this degree of resolution, the program then estimates the expected final prevalence of pneumonic lesions in slaughter pigs. Comparison of predictions with slaughterhouse data from four herds indicated that the guide was realistic in its estimates. PMID- 3840618 TI - Lymphosarcoma involving the mandible in two goats. PMID- 3840619 TI - Theiler's virus RNA and protein synthesis in the central nervous system of demyelinating mice. AB - We studied Theiler's virus RNA and capsid protein synthesis in sections of mouse spinal cord using in situ hybridization coupled to immunoperoxidase. We found that the majority of infected cells contain 100 to 500 viral genomes and no detectable capsid antigens. Similarly, baby hamster kidney (BHK) cells, which are permissive to Theiler's virus, do not synthesize capsid if they contain less than 1000 viral genomes. Our results demonstrate that virus multiplication is restricted in vivo at the level of RNA replication. They suggest that RNA restriction is sufficient to explain the lack of capsid antigen synthesis. PMID- 3840620 TI - Molecular cloning of Lassa virus RNA: nucleotide sequence and expression of the nucleocapsid protein gene. AB - Lassa virus RNA isolated from purified virus particles was polyadenylated and reverse transcripts were cloned into the PstI site of plasmid pUC9. Clones containing sequences of the smaller (S) segment of the Lassa virus genome were identified by hybridization with purified S RNA. They were characterized by their ability to hybridize with fragments of 3'-labeled Lassa virus S RNA and with each other, and by restriction mapping. The largest insert was 1830 bp long and began with the 3'-terminal 19-base sequence characteristic of all arenavirus S RNAs so far analyzed. The virus complementary strand contained a single large open reading frame, beginning at the ATG nearest its 5' end (nucleotides 103-5) and terminating with a TGA triplet at position 1813-15, that encodes a protein of 570 amino acids. A recombinant was constructed which expressed the gene as a fusion protein in Escherichia coli. The product was a 60-kDa polypeptide which reacted with monoclonal antibodies specific for the nucleocapsid protein. Comparison of the predicted amino acid sequence with the corresponding sequences deduced from the nucleotide sequences of the other arenavirus S RNAs, lymphocytic choriomeningitis (LCM) and Pichinde, reveals a considerable degree of similarity between Old and New World arenaviruses. PMID- 3840621 TI - Purification and amino-terminal protein sequence analysis of the mumps virus fusion protein. AB - The fusion (F) protein of mumps virus was purified by immunoaffinity chromatography using an anti-F monoclonal antibody. The F protein was reduced and alkylated, and the F1 and F2 chains were isolated by high-pressure size exclusion chromatography. Twenty-three amino acid residues from the amino terminus of each chain were identified following automated Edman degradation. The amino-terminal sequence of the F1 chain was homologous to previously reported F1 sequences from three other paramyxoviruses (simian virus 5, Newcastle disease virus, and Sendai virus). Secondary structure predictions suggest an alpha-helical conformation for the mumps virus F1 amino-terminal sequence. A helical wheel model of the paramyxovirus F1 NH2 terminus is presented which defines conserved and variable arcs of the helix and provides a spatial representation of this critical functional domain of the paramyxovirus fusion protein. PMID- 3840622 TI - Molecular cloning and characterization of the genome of wound tumor virus: a tumor-inducing plant reovirus. AB - The double-stranded RNA genome of the tumor-inducing plant pathogen, wound tumor virus, was converted to double-stranded DNA and cloned into plasmid pBR322. Multiple apparent full-length copies of 9 of the 12 wound tumor virus genome segments were identified. The entire sequence of cloned genome segment S12, the smallest of the genome segments, was determined. This genome segment was found to be 851 nucleotides in length and to possess a single long open reading frame that extends 178 codons from the first AUG triplet (residues 35-37): information sufficient to encode a protein of the size estimated for the smallest of the previously identified wound tumor virus primary gene products, Pns 12. Sequence data obtained from analysis of cloned cDNA copies of several genome segments and from direct analysis of the 3' termini of the double-stranded genome RNAs revealed that each wound tumor virus genome segment possesses the common terminal sequences: (+) 5'GGUAUU ... UGAU 3' (-) 3'CCAUAA ... ACUA 5'. PMID- 3840623 TI - Isolation and characterization of the measles virus F1 polypeptide: comparison with other paramyxovirus fusion proteins. AB - Measles virus fusion (F) protein has been isolated by immunoadsorption to a complex of monoclonal antibodies bound to protein A-Sepharose. The 41-kDa F1 component of the fusion protein was obtained pure in high yield by preparative SDS-polyacrylamide gel electrophoresis. The amino acid composition of the F1 chain was determined and the N-terminal sequence was analyzed for 40 residues. The structure determined is largely hydrophobic, with 24 residues of Val, Ile, Leu, Met, Phe, or Ala. Comparison with previously published data on the F1 polypeptide of Sendai virus showed considerable similarity in amino acid composition. Extensive N-terminal sequence homologies with F1 polypeptides of different paramyxoviruses are also noticed, including a nine-residue segment strictly conserved among four F1 polypeptides studied, as well as a weaker but distinct and Gly-rich sequence homology with the influenza A and B virus HA2 polypeptides. The evolutionary conservation of the N-terminal region at the site of cleavage of surface glycoproteins of the two families of myxoviruses highlights its specialized function in membrane fusion. PMID- 3840624 TI - [Unintended effects of oral contraceptives. II. Progesterone-caused effects, interactions with drugs]. AB - A variety of desirable and undesirable side effects of oral contraceptives is attributed to the progestins. The favourable effects can be of considerable importance but are not suitable for therapeutic use. The occurrence of possibly severe adverse side effects, notoriously neglected for years, is increasingly recognized. Some of these potentially serious effects are dose dependent and seem to be structure related. Consequently particular attention is focussed upon newly developed compounds which seem to lack some of such disadvantages. Interactions between oral contraceptives and other drugs are reported; they appear to be of little clinical significance. PMID- 3840625 TI - [Polythelia in alcoholics. Preliminary report]. AB - We present a study comparing 650 alcoholics with 1074 patients with miscellaneous other psychiatric (665) and medical (409) diagnoses for the frequency of supernumerary nipples (SN). Also 716 adolescents and school-children in a general medical screening were investigated for this phenomenon. In alcoholics SN were found in over 6%, in the non-alcoholic group in approximately 1%. The latter figure correlates well with other findings in literature, 6% being significantly higher. In the group of adolescents/children (1,8-3,2%) polythelia correlates with familial alcoholism, albeit of the father. As polythelia may be part of fetal alcohol-syndrome, the addiction should be expected on the mother's side, the more so, as the local rate of female/male alcoholism is approximately 1:3 (administrative incidence). We suggest that polythelia may be more frequent among alcoholics. Apart from SN occurring in alcoholic embryopathy, alcoholism of the father may be an additional factor for their development. Polythelia may in certain cases offer a diagnostic clue not only for mammo-renal syndromes but also for individual or familial alcoholism. PMID- 3840626 TI - Adjuvant CMF chemotherapy in operable breast cancer: ten years later. PMID- 3840627 TI - A randomized trial of CMF versus CMFVP as adjuvant chemotherapy in women with node-positive stage II breast cancer: a CALGB Study. PMID- 3840628 TI - Adjuvant chemotherapy for operable breast cancer with positive axillary nodes: a comparison of CMFVP versus L-PAM. PMID- 3840629 TI - Adjuvant therapy for breast cancer with positive axillary nodes designed according to estrogen receptor status. PMID- 3840630 TI - Adjuvant chemotherapy in postmenopausal women: results of sequential noncross resistant regimens. PMID- 3840631 TI - [Uptake and distribution of 14C-retinyl acetate in organs and sensory tissue (inner ear) of the guinea pig]. AB - The uptake and chemical identification of 14C-retinyl acetate in the inner ear of the guinea-pig after oral administration is reported. For methodological reasons the experiment was carried out in vitamin A-deficient guinea-pigs. In the sensory tissues a time-dependent distribution was found similar to that in other organs. The chemical identification shows that the orally administered labeled retinyl acetate can be detected as retinyl palmitate in the membranous structures of the inner ear. This may be an indication for the ability of the inner ear tissues to esterize and probably store the transport form of vitamin A, retinol. PMID- 3840632 TI - [Venereology 1985]. AB - A new generation of sexually transmissible diseases affects the individual by severe long lasting complications and requires public health measures. The danger for the fetus and the newborn of perinatal transmission, the risk for pregnant women of complications before, at, and after birth, as well as the evidence of connections between venereal infections and the development of cancer demand close cooperation of physicians of different branches and reorientation regarding the training of students and physicians. PMID- 3840633 TI - Structure and variation of the influenza C glycoprotein. AB - The amino acid sequence of the influenza C/JHB/1/66 glycoprotein was predicted from sequence analysis of cloned DNA. The glycoprotein exhibited several similarities to the haemagglutinin (HA) glycoproteins of influenza A and B viruses, although its overall homology to these glycoproteins was low. A comparison between the sequences of C/JHB/1/66 and C/Cal/78 strains revealed 96% homology. The nucleotide and amino acid changes appeared to be non-random, with a high proportion occurring between amino acid positions 182-212. A comparison between the JHB/1/66 glycoprotein and the influenza A/X31 HA sequence suggested that this region may be structurally analogous to the 'A' antigenic site of the HA glycoprotein. PMID- 3840634 TI - Haemagglutinin transport mutants. AB - Two mutants (ts1 and ts651) with a temperature sensitive defect in the intracellular transport of the haemagglutinin from the rough endoplasmic reticulum to the plasma membrane have been analysed. Nucleotide sequencing of the haemagglutinin revealed with each mutant two point mutations that are located in the stem region of the molecule. PMID- 3840635 TI - Purification and enzymatic properties of an RNA polymerase-RNA complex from influenza virus. AB - An RNA polymerase-viral RNA complex was purified from influenza A/PR/8 virions by combination of cesium trifluoroacetate centrifugation and phosphocellulose column chromatography. Surface proteins were removed from the detergent-treated virions by the centrifugation. Starting from the M protein-free ribonucleoprotein (RNP) fraction, an RNA polymerase-RNA complex lacking NP protein was isolated by repeated chromatography on phosphocellulose columns. The isolated RNA polymerase RNA complex, which is composed of PB1, PB2, PA and vRNA, cleaved capped poly(A) endonucleolytically at 10-12 nucleotides from the 5' end and incorporated GMP into the 3' end of the resulting capped fragments. In the presence of all four ribonucleotide triphosphate substrates, the cleaved fragments were elongated to polynucleotides in the absence of exogenous vRNA. The RNA synthesis was primed not only by capped polynucleotides but also dinucleotide ApG. These results indicate that the purified RNA polymerase-RNA complex is as active in viral mRNAs synthesis as native RNP and that NP protein is not required for the catalytic function. PMID- 3840636 TI - Maternal behavior in females of the laboratory rat selected for high and low activity and defecation rates. AB - Laboratory rats of the Wistar strain were selectively bred for a high or a low level of short-term activity (+A, -A) and defecation (+D, -D) in a novel environment. In lactating females of groups +A-D, +A+D, -A+D and -A-D maternal behavior was tested in situations, differing in complexity and demands of the ability of the females to adapt themselves to a new environment. Most intergroup differences were dependent on the characteristics of their activity, while defecation manifested itself less markedly in maternal behavior. In all tests +A groups showed a higher number of active contacts with the young, and the duration of maternal activities was higher in them when compared with -A females. The results indicated difference in the structure of maternal behavior and in the strategy with which they coped with a new situation. Females -A arranged the scattered pups into a nest more rapidly but they manipulated less with them and retrieved them minimally. In -A more often than in the +A the cycle of maternal behavior was interrupted by the elements of other than maternal programs. On the other hand, females +A gave more attention to each pup, they carried it from place to place for a long time, they tended to rearrange the newly formed nest, maternal program being interrupted less often. The most marked difference appeared between groups +A-D and -A+D. PMID- 3840637 TI - [Embolisms in the embryo]. AB - Artificial embolisms were produced in chick embryos by injecting small mouse liver cell particles in an extraembryonal vein. 1-10 h after the injection the embryos were fixed, and serial sections were examined by light microscope. Most of the obstructed vessels were later recanalized. All of the emboli were surrounded by thrombocytes and partly fixed on the vessel wall. The smaller of the injected particles were lying outside the vessels in the neighboring mesenchyme. The significance of thrombocytes for this transport mechanism is discussed. PMID- 3840638 TI - [In vitro biopharmaceutical control of pharmaceuticals. 6. In vitro equivalence of different acetylsalicylic acid tablets]. PMID- 3840639 TI - Single intravenous and oral doses of fenflumizole: pharmacokinetics and effects on prostanoid formation. AB - Fenflumizole is a substituted triaryl-imidazole with anti-inflammatory activity. Its disposition in man was studied after single intravenous and oral doses to 8 healthy male volunteers. Formation of the prostanoids thromboxane B2 (TXB2) and 6 keto-prostaglandin F1 alpha (6-k-PGF1 alpha) in clotting blood was studied concomitantly. The pharmacokinetics after intravenous doses (0.1 mg/kg) could be fitted to a three compartment model and the half-lives (t 1/2) corresponding to the three phases were 2 min., 1 hour and 15 hours, respectively. The volume of distribution was 386 l and the plasma clearance 0.5 l per min. Oral doses (0.5 mg/kg) were rapidly absorbed (t 1/2 = 0.2 hr) and the following elimination from plasma had two phases with half-lives of 1 hour and 14 hours. Bioavailability was 50% due to a pronounced first-pass effect. The two metabolites mono- and didemethylfenflumizole were detected after both oral and intravenous doses and their maximum plasma concentrations occurred after 1-2 hours irrespective of the administration route. A concentration dependent depression of prostanoid formation was seen, the IC50 for TXB2 and 6-k-PGF1 alpha being 19 and 53 ng/ml respectively. PMID- 3840640 TI - Tissue-specific depletion of NPY-like immunoreactivity by reserpine. PMID- 3840641 TI - [Percutaneous puncture with a robot]. AB - The great advances of microelectronics and mechatoronics are gradually being applied into medicine. In percutaneous nephrostomy, it is possible to calculate the depth and direction of the needle by using a computer if one point on the surface of the skin and another point in the dilated renal pelvis are determined. When a robot is moved according to the computed results, a percutaneous operation is performed fast and exactly. We established a system through which a percutaneous operation is automatically performed. The following technical difficulties of this system were overcome. The coordinates of the two points for a percutaneous operation were input into a computer through a CRT display. Machine language of the Z-80 CPU was used for the programming. A program package enabling fast calculation was developed. The shape of the robot was calculated and shown on the CRT display before it showed any movements. PMID- 3840642 TI - Anionic surface properties of aortic and mitral valve endothelium from New Zealand white rabbits. AB - The luminal surfaces of the endothelium lining the two surfaces of the aortic arterial (AAR) and ventricular (AVT), and mitral ventricular (MVT) and atrial (MAT), valve cusps were studied with cationic ferritin (CF) and ferritin (Fer) conjugated lectins (WGA, RCA, SBA). The arterial (AAR) and ventricular (MVT) surfaces of the aortic and mitral cusps, which are exposed to more turbulent fluid mechanical forces and lower wall shear stresses, had the greatest density of CF labeling. The endothelia of the four surfaces displayed a gradient of decreasing density from the nuclear region to the periphery. Neuraminidase, chondroitinase ABC and AC, heparinase, heparitinase, hyaluronidase (testicular), and pronase E digestions suggested that a significant number of the anionic sites labeled by CF are associated with sialoglycoproteins and glycosaminoglycans such as chondroitin 4/6 sulfates, dermatan sulfates, and heparan sulfates. The localization of WGA receptors on the endothelium of AAR and MVT demonstrated a greater density of sialyl moieties than on the AVT and MAT. There was no binding of Fer-RCA with specificity for D-galactopyranosides or Fer-SBA with affinity for N-acetylglucosamine and D-galactose to the endothelium unless it was first treated with neuraminidase. Hence, sialic acids are shown to be among the more superficial components of this glycocalyx and to be largely responsible for the greater densities over the endothelium of AAR and MVT. PMID- 3840643 TI - Phase II trial of piperazinedione in patients with advanced or recurrent uterine sarcoma. A Gynecologic Oncology Group study. AB - Twenty patients with advanced or recurrent uterine sarcoma no longer amenable to control with surgery and/or radiotherapy were entered into study by Gynecologic Oncology Group institutions to receive piperazinedione 9 mg/m2 intravenously every 3 weeks. One patient was deemed to be ineligible for study. Among the 19 evaluable patients, only one response was observed, a partial response in a patient with leiomyosarcoma. Adverse effects consisted primarily of myelosuppression and were tolerable. Piperazinedione at the dose and schedule tested appears to have little activity against uterine sarcomas. PMID- 3840644 TI - m-AMSA in refractory lymphoma. A phase II trial of the Eastern Cooperative Oncology Group. AB - m-AMSA (4'-[9'-acridinylamino]-methansulfon-m-anisidide) is an acridine derivative which has shown a wide spectrum of activity in preclinical testing. The mechanism of action is thought to be via interference with synthesis and integrity of DNA chains by intercalation between base pairs and external binding. Initial phase I clinical trials revealed granulocytopenia to be the dose limiting toxicity with occasional thrombocytopenia. Phlebitis, liver function abnormalities, and cardiac abnormalities have also been noted. Early reports suggested activity in leukemia and lymphoma. Based on these results ECOG evaluated m-AMSA in a phase II trial of Hodgkin's disease and non-Hodgkin's lymphoma. PMID- 3840645 TI - Leu-M1 positivity not specific for Hodgkin's disease. PMID- 3840646 TI - Sexually transmitted disease and the pediatrician. PMID- 3840647 TI - Parental response to perinatal death. Mother-father differences. AB - Depression and social interaction of mothers and fathers following a perinatal loss were studied using the questionnaire responses of 58 married couples. In the first six weeks following their loss, differences observed in responses of mothers and fathers are most apparent. During this time, mothers have more depressive symptoms, more often would like others to open a conversation with them about the baby, and are more likely to find their spouse helpful. At a mean of 25 months after the death, mothers' and fathers' differences with respect to depression become less apparent. However, fathers with more depressive symptomatology have increasing needs for social interaction and do not perceive that their marriage has grown stronger. Maternal depression has no correlation with perceptions of marital strength. Family counseling should reflect the possible variations in timing of the grief reaction and potential capabilities of parents to be supportive of one another. PMID- 3840648 TI - Computer program for aminoglycoside dosing. PMID- 3840649 TI - Congenital contractures, edema, hyperkeratosis, and intrauterine growth retardation: a fatal syndrome in Hutterite and Mennonite kindreds. AB - We present clinical findings in infants from three kindreds (two Hutterite and one Mennonite) with an apparently unique, fatal disorder. The major manifestations consist of severe intrauterine growth retardation, congenital contractures, and tense skin which is easily eroded. The skin is tightly drawn over the face, giving an abnormal appearance consisting of a narrow, pinched nose, small mouth, limited jaw mobility, and ectropion (in one). One infant had first-degree hypospadias. Apart from this, there were no organ malformations and the infants did not have hydrops. Histologically, the skin showed hyperkeratosis. It is postulated that this is a tissue dysplasia and that all of the clinical effects are secondary. The disorder appears to be an autosomal recessive trait. The two Hutterite families are from different endogamous subdivisions. They are related as fourth cousins once-removed and fifth cousins in multiple ways through the six nearest common ancestors of all four parents. There are 25 founders (11 couples and three individuals) who are common ancestors. We computed the probability of joint descent of the four alleles in each pair of parents and in a sample of Alberta Hutterite couples, assuming that each of the common founders in turn was the original carrier. For an allele from one particular founder couple, there is a relatively greater probability of identity by descent for each pair of parents than on the average for other couples of the same endogamous subdivision. PMID- 3840650 TI - Congenital anomalies in the Hutterite population: a preliminary survey and hypothesis. AB - The Alberta Provincial Congenital Anomaly (CA) Surveillance reporting forms were scanned for infants whose surnames and addresses identified them as belonging to the Hutterite Brethren. Death registrations (of infants up to 1 year) and stillbirth registrations were similarly scanned. While the overall percentage of total malformations (5%) and major malformations (2%) was no different from that of the total population of Alberta, closer examination of the actual entities showed a large number of monogenic disorders among the Hutterites. The frequency of multifactorial congenital anomalies was approximately 1%. The inbreeding coefficients, using a genealogic data base, were computed for each "case baby" and two Hutterite "control babies," the latter being births preceding and succeeding the case baby. There was no statistical difference in the distribution of inbreeding coefficients between the case and control groups. While the data are based on small numbers and therefore are preliminary, they suggest that the Hutterite lifestyle, of good nutrition (using largely home prepared foods), absence of tobacco and minimal alcohol consumption, may be one factor responsible for fewer multifactorial CAs whose occurrence is environmentally susceptible to such influences. Studies of populations with a low incidence of disorders are just as important as those with a high incidence. PMID- 3840651 TI - Serum unconjugated estriol level as a predictor of pulmonary maturity. AB - Lack of respiratory distress syndrome in infants delivered after the maternal serum estriol value attained greater than or equal to 15 ng/ml was investigated. In 91 cases after 34 weeks' gestation no lecithin-sphingomyelin ratio less than 2.0 was found where the serum estriol level was greater than or equal to 15 ng/ml and no respiratory distress syndrome in the patients delivered less than or equal to 3 days from amniocentesis. PMID- 3840652 TI - Magnesium sulfate and ritodrine hydrochloride: systemic and uterine hemodynamic effects. AB - Effects of magnesium sulfate and ritodrine hydrochloride on cardiovascular physiologic characteristics were studied in 70 human subjects treated for preterm labor. Systemic and uterine hemodynamic effects were investigated in five pregnant rhesus monkeys. Systolic blood pressure was minimally affected by either agent. Diastolic pressure, while not affected by magnesium sulfate, decreased 26.3% during ritodrine therapy. Maternal and fetal heart rates were minimally affected by magnesium sulfate. Ritodrine increased maternal and fetal heart rates significantly. In the monkeys, magnesium sulfate increased uterine and placental blood flows (by the microsphere technique) but failed to alter cardiac output. Ritodrine produced an increase in cardiac output but decreased perfusion pressure. Placental blood flow decreased by an average of 27.6%. Ritodrine would therefore seem contraindicated with a compromised fetal environment. Magnesium sulfate, by not altering perfusion pressure, may have a beneficial effect on uterine hemodynamics. These specific and distinct differences in cardiovascular and hemodynamic effects should be considered when either magnesium sulfate or ritodrine is selected as a tocolytic agent. PMID- 3840654 TI - Implementation of Rao's one-sample polynomial growth curve model using SAS. AB - Longitudinal data are frequently treated with the classic analysis of variance and regression models. However, these models assume independence of observations. Hoel (1964) demonstrated that the use of least-squares methods on intercorrelated serial observations results in the rejection of the null hypothesis much too frequently. Although appropriate models for analyzing longitudinal data have been available for quite some time, they have remained inaccessible due to cumbersome matrix manipulations. We implement Rao's (1959) one-sample polynomial growth curve model using the programming capability and matrix language of SAS, which involves testing the goodness-of-fit and calculation of confidence bands for polynomial growth curves fit to data at equally spaced time points. Confidence intervals for the parameters themselves are also computed. The method and program (presented in the Appendix) are illustrated with examples involving mandibular ramus height in 12 young male rhesus monkeys. The data set, which spans a 4 year period (yearly observations), is fit adequately by a quadratic equation. The data spanning a 2 year period (half-year observations) are fit adequately by the linear equation. These examples illustrate the considerable widening of confidence bands that occurs when polynomial equations having more terms than are needed to meet the goodness-of-fit requirement are considered. PMID- 3840653 TI - A comparative microscopic and biochemical study of the uptake of fluorescent and 125I-labeled lipoproteins by skin fibroblasts, smooth muscle cells, and peritoneal macrophages in culture. AB - Uptake of low density lipoprotein (LDL) and of acetyl LDL was compared in skin fibroblasts, smooth muscle cells, and peritoneal macrophages with the use of lipoproteins labeled with either 125I or the fluorescent probe 3,3' dioctadecylindocarbocyanine (DiI). The uptake of DiI-labeled lipoproteins was assessed by quantitative spectrofluorometry and by fluorescence microscopy. The DiI was quantitatively retained by the cells, while the 125I-LDL was degraded and 125I-labeled degradation products were excreted from the cells. In smooth muscle cells and fibroblasts the uptake of LDL was virtually the same whether measured with the use of the DiI or 125I-label (sum of cell-associated and degraded 125I). The labeling of acetyl LDL with DiI enhanced its uptake in peritoneal macrophages by an average of 18%. With the DiI label, lipoprotein uptake (DiI-LDL for smooth muscle cells and skin fibroblasts and DiI-acetyl-LDL for mouse peritoneal macrophages) could be determined after as little as 10 minutes of incubation at 37 C. The pattern of uptake of the DiI-labeled lipoproteins was consistent with binding to specific receptors, because no DiI could be detected in mutant cells without LDL receptors, and uptake was competitively inhibited by addition of excess unlabeled lipoprotein. When the DiI-labeled lipoproteins were removed from the medium, there was a 5-15% loss of DiI from all cell types studied over the first 24 hours. Thereafter, DiI loss from cells was dependent on cell type and culture medium. No further loss of DiI occurred from skin fibroblasts for up to 96 hours of incubation in medium supplemented with either lipoprotein-deficient serum (LPDS) or 10% fetal bovine serum. During this same time period there was a 40-60% loss of DiI from smooth muscle cells and macrophages incubated in medium supplemented with LPDS. Most of the DiI lost from the cells (60-70%) could be recovered in the culture medium but was not the result of cell death, as was indicated by the relatively constant protein concentrations per dish. The loss of DiI was markedly reduced in smooth muscle cells and macrophages when 10% fetal bovine serum was substituted for the LPDS in the culture medium. This suggests that some cells incubated with LPDS undergo changes, perhaps in the plasma membrane, that alter their ability to retain the DiI. In the presence of 10% fetal bovine serum, however, the DiI label is quantitatively retained by all cells tested for up to 96 hours.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3840655 TI - Hemodynamic effects of neurohypophyseal peptides with antidiuretic activity in dogs. AB - Arginine vasopressin (AVP) is known to produce increases in total peripheral resistance (TPR) and mean arterial pressure (MAP) and decreases in heart rate (HR), cardiac output (CO), and plasma renin activity (PRA). Some recent observations with AVP and synthetic analogues have suggested that under certain conditions, AVP can induce cardiovascular and reninsecretory responses in the opposite directions. To characterize the receptors mediating these responses, the effects of AVP, oxytocin, and synthetic neurohypophyseal analogues with specific antidiuretic, vasoconstrictor, or oxytocic activities were studied in conscious dogs. AVP and 2-phenylalanine-8-ornithine-oxytocin (Phe2Orn8OT, a selective vasoconstrictor agonist) produced similar responses when infused at 10 ng X kg-1 X min-1. That is, TPR and MAP increased, and CO, HR, and PRA decreased. Pretreatment with a selective vasoconstrictor antagonist, [1-(beta-mercapto beta,beta-cyclopentamethylenepropionic acid) 2-(O-methyl)tyrosine]AVP, abbreviated d(CH2)5Tyr(Me)-AVP (10 micrograms/kg), blocked the actions of Phe2Orn8OT. However, in the presence of d(CH2)5Tyr(Me)AVP, AVP actually decreased TPR and increased CO, HR, and PRA. An analogue with selective antidiuretic activity, 4-valine-8-D-AVP (VDAVP, 10 ng X kg-1 X min-1), produced the same effects as the combination of vasopressin plus d(CH2)5Tyr(Me)AVP. Neither the effects of VDAVP nor of AVP plus antagonist were blocked by propranolol (1 mg/kg). These data indicate that vasopressin, by its antidiuretic activity, produces cardiovascular effects that are opposite to many of those produced by its vasoconstrictor action and that these effects are not dependent on mediation by beta-adrenoceptors. PMID- 3840656 TI - Comparison of human chorionic gonadotropin measurements by radioimmunoassay and in vitro bioassay. AB - A sensitive, accurate, and reproducible in vitro bioassay was developed for measuring human chorionic gonadotropin (hCG), based on testosterone production by collagenase-dispersed interstitial cells of rat testes in response to hCG. The results were compared to those obtained by established beta hCG radioimmunoassay. The assay sensitivity was 25 pg hCG-CR119/ml (65 microIU second IRP/ml). The intra-assay coefficient of variation (CV) was 8.8%, and the interassay CV was 13% and 33% in the high and low ranges of the standard curve, respectively. hCG recoveries were 89.6 +/- 3.12% (SE, n = 12). The pattern of serum bio-hCG followed established patterns of immuno-hCG, with the highest level measured during the first trimester (mean, 52,600 +/- 7,250 SE (mIU/ml, n = 11), decreasing thereafter to a mean value of 7,400 +/- 1,500 mIU/ml at term. The mean ratio of the bio/immunoactivity was consistently greater than one and did not significantly change at the various stages of pregnancy, or between normal and molar pregnancies (first trimester, 1.75 +/- 0.12 SE; midtrimester, 1.46 +/- 0.12; term, 1.50 +/- 0.09; molar, 1.55 +/- 0.2). When serum bioactive and immunoactive hCG were measured in a woman at five weeks of pregnancy, an episodic secretion of hCG was obtained by both assays. PMID- 3840657 TI - Antibodies to spermatozoa: XI. The use of immunobeads for the detection of sperm antibodies in serum. AB - Two procedures were developed and evaluated that used either larger or smaller volumes for the detection of sperm antibodies in serum by means of an indirect immunobead test (IBT). The immunobeads, coated with rabbit antibody to each of the major human immunoglobulins (IgG, IgA, or IgM), were mixed with preparations of donor sperm, onto which antibody had been coated by passive transfer from various serum samples. The results of the IBT could be evaluated in various ways: (1) positive or negative; (2) if positive, whether binding is to the tail, the head, or the head and tail of the sperm cells; (3) if positive, whether binding is by IgG, IgA, or IgM. The diverse IBT results were obtained from a group of 50 serum samples; these sera were also tested by two sperm agglutination methods; the gelatin agglutination test (GAT) and the tube-slide agglutination test (TSAT). There was an excellent agreement between the IBT and the GAT; it was not as good between the IBT and the TSAT. However, considering both agglutination methods together, 90% of the IBT-positive sera were agglutination-positive. In terms of morphological sites, tail binding occurred in 27 of 31 sera, head binding in 12 of 31 sera, and head-tail binding in 15 of 31 sera. The number with tail binding was very close to the number that were GAT-positive (26). As for the immunoglobulins, the most frequent class was IgG. IgA was 83% as frequent and IgM was only 25% as frequent as IgG.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840658 TI - A projection from the periaqueductal grey to the lateral reticular nucleus in the cat. AB - A projection from the periaqueductal grey (PAG) to the lateral reticular nucleus (NRL) in the cat was demonstrated by means of retrograde transport of the wheat germ agglutinin-horseradish peroxidase complex. The connection has its main origin ipsilaterally in the ventral part of the caudal PAG, but scanty projections from other parts of the PAG were also found. The neurons projecting to the NRL are of varying shapes and sizes, but most cells have a maximum diameter of less than 20 micron. The findings are discussed in relation to the other afferent and efferent connections of the NRL. PMID- 3840659 TI - Nuclear uptake of 1,25-dihydroxyvitamin D3 in developing rodent teeth: an autoradiographic study. AB - Target cells for 1,25(OH)2 vitamin D3 metabolites are identified in developing rodent teeth by the use of thaw-mount autoradiography. Following the injection of [26, 27-3H]-1,25(OH)2 vitamin D3 into 18-day- and 20-day-old fetal rats and neonatal mice, nuclear concentration of radioactivity is found in different cell types. In incisors of both animal groups, strong nuclear labeling is present predominantly in pulp cells, while relatively weakly labeled cells are found in the layers of odontoblasts, ameloblasts, and stratum intermedium. In molars, nuclear labeling is absent in fetal rats, but is present in 2-day-old neonates in pulp cells and cells in the layers of stratum intermedium of the first molars, but not in the second molars. The absence of labeled pulp cells in the progenitor regions of incisors and in molars of 20-day-old fetal rats, and differential ontogenic appearance of labeled pulp cells in molars, indicates that there is a critical period of receptor emergence. The finding that labeled pulp cells exist in the regions of incisors and molars where secretory odontoblasts are present suggests that nuclear uptake of 1,25(OH)2 vitamin D3 is related to cell maturation and differentiation, and topographically related to the formation of dentin. The results further suggest that, in contrast to bone, the predominant effect of 1,25(OH)2 vitamin D3 is not on tooth cells which are directly involved in the formation of calcified tissue, i.e., ameloblasts and odontoblasts, but rather on supporting tissues such as pulp cells and stratum intermedium. PMID- 3840660 TI - Comparison of enflurane, halothane, and isoflurane for diagnostic and therapeutic procedures in children with malignancies. AB - The authors performed a randomized, prospective trial comparing enflurane, halothane, and isoflurane (each administered with nitrous oxide) to establish which inhaled anesthetic produced the fewest complications and the most rapid induction of anesthesia for children undergoing general anesthesia for diagnostic procedures as oncology outpatients. Sixty-six children, ranging from 8 months to 18 years, underwent a total of 124 anesthetics. Induction of anesthesia (time from placement of facemask to beginning of skin preparation) was faster with halothane (2.7 +/- 1.0 min, mean +/- SD, n = 46) than with enflurane (3.2 +/- 0.8 min, n = 43) or isoflurane (3.3 +/- 1.2 min, n = 35). Emergence from anesthesia (time from completion of the procedure to spontaneous eye opening) was more rapid with enflurane (4.7 +/- 4.4 min) than with halothane (6.2 +/- 4.5 min) or isoflurane (6.2 +/- 3.9 min). Total time from the start of procedure until discharge was longer with isoflurane (25.1 +/- 6.8 min) than with enflurane (21.5 +/- 8.6 min) or halothane (22.3 +/- 7.6 min). During induction, the incidence of laryngospasm was greatest with isoflurane (23%) and the incidence of excitement least with halothane (13%). During the maintenance of, emergence from, and recovery from anesthesia, coughing occurred most frequently with isoflurane. During the recovery period, headache occurred most frequently with halothane (9%); there were no significant differences in the incidence of nausea, vomiting, hunger, or depressed effect. The authors conclude that the rapid induction and minimal airway-related complications associated with halothane anesthesia make it an excellent anesthetic agent for pediatric patients undergoing short diagnostic procedures. PMID- 3840661 TI - Idiopathic spontaneous deep venous thrombophlebitis in an adolescent: a case report. AB - A rare case of spontaneous deep venous thrombophlebitis in a 15-year-old adolescent is presented. This case is remarkable as it lacks any associated conditions and predisposing factors, as well as an etiologic diagnosis. PMID- 3840662 TI - [Cell concentration of individual cow's milk: effect of the status of mammary infection, parity, lactation stage and milk production]. AB - The relative effect of the intramammary infections and of different factors related to the cow (parity, stage of lactation, milk yield) on the individual cell counts, were studied for 30 months on the 62 black-and-white Holstein cows of an experimental herd. During this period, the cows were regularly submitted to bacteriological tests for intramammary infections, individual cell counts and controls of the milk yield. The infection status of the cows at the time of counting was the main factor affecting the cell concentrations in the milk: the values ranged from around 5 X 10(4) cells/ml in the absence of infection in the four quarters, to values that were on average twice as high in the case of infection by a minor pathogen and ten times as high in the case of infection by a major pathogen. The mean cell concentrations in the milk of uninfected cows were significantly lower during the first lactation; they varied during the lactation according to a curve which had the form of an inverted lactation curve. The mean cell count during a lactation was independent of the mean milk yield per day of lactation. In cows infected by a major pathogen, the effect of the number and stage of lactation was different. Only the variation apparently associated with the stage of lactation had a sufficient amplitude to bring the mean cell concentrations of uninfected cows close to the values recorded in cows infected by a minor pathogen. The average results from cows infected by a major pathogen were, however, much higher at all stages of lactation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840663 TI - [Relation between the cell concentration of individual cow's milk, milk production and the cow's susceptibility to mammary infection]. AB - The relations between the cell concentration in the milk from individual cows, their susceptibility to mastitis and milk production capacity were studied for 30 months on the 62 black-and-white French Frisian X Holstein cows of an experimental herd. During this period, the cows were regularly submitted to bacteriological tests for intramammary infections, individual cell counts and controls of the milk production. The cell concentrations in the milk before infection were not different for two groups of cows that showed more or less susceptibility to mastitis. The corrected milk production fell linearly with the logarithmic mean of the lactation cell concentration, leading to a decrease of the yield that was as great as between 100 000 and 200 000 as between 200 000 and 400 000 cells/ml. The reduction in yield was particularly large in cows that presented brief clinical infections followed by persistent inflammatory sequelae. The biological significance of these results and their implications for the control of mastitis were discussed. PMID- 3840664 TI - [Antitumoral activity of various doses of corynebacterium parvum as a function of the age of mice]. AB - The anti-tumor activity of Corynebacterium parvum against two different tumours, a mammary carcinoma grafted in C3H mice and a lymphosarcoma grafted in XVII mice, was lower in young and old mice, than in adult ones. In young mice (25 days) of both lines, low doses of C. parvum were more efficient than higher doses. In 12 month old XVII mice a higher survival rate was obtained by increasing the dose of C. parvum administered, whereas in old C3H mice, this phenomenon was not observed. Sublethal doses of X-irradiation abrogated the C. parvum-induced protection. Restoration of the protective effect occurred faster in 3-month old mice than in 8-month old mice. This restoration appeared earlier in XVII mice than in C3H mice. PMID- 3840665 TI - Local immunotherapy with propionibacterium granulosum KP-45 in advanced breast cancer. AB - 50 patients with advanced metastatic breast cancer were matched into 25 "twin" pairs. In each pair, one "twin" received chemotherapy (FAC) and the other received chemoimmunotherapy (FAC + intratumorally Propionibacterium granulosum KP 45 (PG)). The therapeutic effects of this 2-year follow-up study were carefully documented and analysed. The mean survival time of FAC + PG-treated patients was about 17 months as compared to 8.5 months in FAC controls. PG-therapy responders showed increasing values of T-lymphocytes in peripheral blood, as well as higher blast transformation indices than nonresponders and controls. The skin reactivity to PHA, Distreptase, and Tuberculin was markedly enhanced in the FAC + PG-group. The incidence rate of hematological and/or infectious complications was significantly lower in PG-treated patients than in the controls. Local PG immunotherapy was proven beneficial in advanced breast cancer when combined with FAC-chemotherapy, providing better toleration of chemotherapy and lower risk of myelosuppression and infections. PMID- 3840666 TI - Human meningeal sarcoma heterotransplants in Nu/Nu mice treated with L phenylalanine mustard (L-PAM) and dianhydrogalactitol (DAG). AB - The clinical characteristics and response to therapy of a patient with meningeal sarcoma, one of four patients over a twenty-five year period at Memorial Sloan Kettering Cancer Center, are described. The light and electron microscopic characteristics of the primary tumor and as a heterotransplant in nude mice showed minimal differences. The tumor was resistant to conventional chemotherapeutic agents, both in the patient, in vitro as a cell culture and ex vivo as a heterotransplant. Only a combination of L-phenylalanine mustard and dianhydrogalactitol produced a limited response in both the patient and the mice. This combination may have some utility in future cases. PMID- 3840667 TI - [Nonactin biosynthesis. The incorporation of precursors into the antibiotic molecule]. AB - It was shown that 14C-glucose and 14C-acetate are incorporated with the mycelial suspension of Streptomyces chrysomallus var. macrotetrolidi into the macromolecular compounds of the biomass and into nonactin, an antibiotic of the macrotetrolide group. The dependence of the incorporation on the time of the mycelium incubation with the 14C-substrate was similar for both compounds. Incorporation of 14C-acetate into nonactin was observed at earlier incubation periods, while intensive incorporation of 14C-glucose started after 60-90 minutes of incubation. The culture was shown to have two pathways of glucose metabolism, i. e. glycolysis and pentosophosphate pathway. Under the experimental conditions glycolysis was more important for both the biomass construction and the antibiotic synthesis. Inhibition of various areas of the tricarbonic acid cycle had a significant effect on incorporation of 14C-acetate into nonactin. The character of the effect depended on the site of the inhibitor action: inhibition of aconitase by trifluoroacetate lowered the level of the antibiotic synthesis by 2-4 times and inhibition of succinate dehydrogenase by malonate increased it by 2 times. PMID- 3840668 TI - Adaptation of middle aged rats to long-term restriction of dietary vitamin D and calcium. AB - Previous studies have shown that middle aged rats do not increase renal 1,25 dihydroxyvitamin D3(1,25(OH)2D3) production in response to short-term (4 weeks) dietary vitamin D and calcium restriction. The purpose of the experiments reported here was to determine if middle aged rats demonstrate adaptation to long term restriction of dietary calcium and vitamin D and to compare that adaptation to the adaptation seen in young rats. Middle aged (14-16 months) Fischer 344 rats were fed either a 0.02% calcium, vitamin D-deficient (restricted) or a 1.2% calcium, vitamin D-replete (control) diet. Rats from each group were sacrificed after 1.5, 3.0, 4.5, and 6.0 months on the diets. Renal conversion of 25(OH)D3 to 1,25(OH)2D3 and 24,25(OH)2D3 was measured in vitro using isolated renal cortical slices. Renal 1,25(OH)2D3 production in the restricted group was not significantly increased until 3 months and reached a maximum of 85% higher than the control at 4.5 months. Renal 24,25(OH)2D3 production was significantly decreased after only 1.5 months of restriction and was decreased maximally by 70% at 3.0 months. Serum calcium remained in the range 11-12 mg/100 ml in both diet groups, and serum immunoreactive PTH (iPTH) was modestly increased one- to twofold in the restricted group compared to the control group. In contrast, young rats (3 months old) fed the deficient diet for 1 month had a fourfold increase in renal 1,25(OH)2D3 production and a 71% decrease in 24,25(OH)2D3 production. Feeding the deficient diet also produced a 43% reduction in serum calcium and a 13-fold increase in serum iPTH. These findings demonstrate that middle aged rats do alter their 25(OH)D metabolism in response to long-term vitamin D and calcium restriction. However, both the rapidity and the magnitude of the response is decreased compared to that seen in the young rat. This blunted vitamin D response in the middle aged rat reflects the lack of a decrease in serum calcium and the marginal increase in serum iPTH in response to vitamin D and calcium restriction. PMID- 3840669 TI - Microheterogeneity of a male-specific rat hepatic cytochrome P-450: existence of three allozymic forms. AB - Preparations of hepatic cytochrome P-450 h [D. E. Ryan, et al. (1984) J. Biol. Chem. 259, 1239] and cytochrome P-450 2c [D. J. Waxman (1984) J. Biol. Chem. 259, 15481] from outbred Sprague-Dawley rats were analyzed using two-dimensional electrophoresis and in situ peptide mapping. Both preparations consisted of the same isozyme which was previously characterized as a developmentally regulated, male-specific cytochrome P-450 active in the 16 alpha-hydroxylation of steroids. Each preparation evidenced microheterogeneity which was shown, in part, to result from the existence of two genetically determined variant forms of cytochrome P 450 h/2c. Analyses of hepatic microsomes from several inbred strains of rat revealed that each was characterized by a single variant form of this isozyme, with some strains expressing a variant that was not present in Sprague-Dawley rats. Genetic crosses indicated that these electrophoretic variants represent allozymic forms of cytochrome P-450 h/2c which are codominantly expressed at a single autosomal locus. Additional microheterogeneity of each allozymic form of cytochrome P-450 h/2c was shown to result from a specific in vitro modification that may involve limited proteolysis near its C terminus by a microsome-bound protease. PMID- 3840670 TI - Characterization of the subunits of beta-conglycinin. AB - Four subunits of beta-conglycinin were purified from soybean cultivar CX 635-1-1 1, and were designated alpha, alpha', beta, and beta' in accordance with nomenclature proposed by Thanh and Shibasaki [(1977) Biochim. Biophys. Acta 490, 370-384]. Of these subunits, beta' has not previously been reported or characterized. Consistent with the low levels of methionine in these proteins, cyanogen bromide cleavage of alpha', alpha, and beta' subunits produced only a few fragments. The beta subunit contains no methionine and was not cleaved by cyanogen bromide. The NH2-terminal amino acid sequences of the alpha and alpha' subunits are homologous, and each has valine at its amino terminus. The beta subunit has a very different NH2-terminal sequence from those of the alpha and alpha' subunits, and has leucine at its amino terminus. The NH2-terminal sequence of the beta' subunit could not be determined, as it appeared to be blocked to Edman degradation. Although alpha and alpha' subunits have similar NH2-terminal sequences, they differ in the number of methionine residues and so yielded different numbers of cyanogen bromide fragments. Two cyanogen bromide fragments (CB-1 and CB-2) were purified from the alpha subunit. CB-1 originated from the NH2-terminal end of the subunit. The amino acid sequence of CB-2 was identical to that predicted from the nucleotide sequence of cDNA clone pB36. The insert in pB36 encoded 216 amino acids from the COOH-terminal end of the alpha subunit and contained a 138-bp trailer sequence which was followed by a poly-(A) tail. Maps showing the relative positions of methionine residues and carbohydrate moieties in the alpha and alpha' subunits were drawn, based on primary sequence data, and the size and carbohydrate content of the CNBr fragments derived from the subunits. PMID- 3840671 TI - Risk factors for mental retardation. AB - Risk factors for mental retardation were studied prospectively in 12 000 children born in northern Finland in 1966 and followed to the age of 14 years. The number of untraced children was less than 2 per 1000. Altogether 326 children had an IQ less than 86, and the incidence of severe retardation (IQ less than 50) was especially high. An incidence figure for children with mental retardation, a separate figure for healthy children, and also the death rate were calculated for each disease. Only in the cases of Down's syndrome and some hereditary diseases were all the exposed children mentally retarded; in other diseases some children did not seem to suffer any sequelae. A risk factor could be found for 50.6% of the total number of children with mental retardation, the percentage decreasing from the severest to the mildest form (86.7%, 45.4%, and 30.9%). Some 9.4% of the healthy children and 77.7% of those who died had had one or more of these conditions. Prenatal conditions were most often associated with severe mental retardation (64%), and perinatal conditions with mild retardation, (IQ 50 to 70; 27%) and mental subnormality (IQ 71 to 85; 18%). Cases with no known risk factor were more common among boys than girls. PMID- 3840672 TI - Infantile colic revisited. PMID- 3840673 TI - Effect of caffeine on human sperm penetration into zona-free hamster ova. AB - The effect of caffeine on spermatozoal ability to penetrate zona-free hamster ova was examined on fresh and frozen-thawed semen samples. The mean motility of 10 fresh semen samples incubated with caffeine significantly increased from 29% to 35%. Sperm penetration into zona-free hamster ova did not differ between the control group and the specimens to which caffeine was added. The same effect of caffeine on sperm motility and hamster ova penetration was noted in the frozen thawed sperm samples. Motility was enhanced by 21%, but hamster ova penetration did not significantly change. The increase in sperm motility caused by caffeine does not change the fertilizing ability of fresh and frozen-thawed human sperm. PMID- 3840674 TI - Spermatogenesis in the bandicoot rat. I. Duration of the cycle of the seminiferous epithelium. AB - The duration of the cycle of the seminiferous epithelium was studied in a pest rodent, the bandicoot rat. Fourteen stages of the cycle were identified. The duration of the seminiferous epithelium cycle was determined to be 10.0 days. PMID- 3840675 TI - Alveolar development of the lung of the rat. Part II. Morphogenesis of surfactant. PMID- 3840676 TI - Retinopathy of prematurity. PMID- 3840677 TI - Zone I retinopathy of prematurity. AB - Two (5.4%) of 37 patients with retinopathy of prematurity were noted to have zone I vascularization of the retina in at least one eye. Three eyes in the two patients showed plus disease with nonflorid stage 3 ridge formation and extraretinal fibrovascular proliferation. Two of the three eyes were not treated and rapidly progressed to total retinal detachment and blindness. The third eye was treated with cryotherapy and this was followed by resolution of the plus disease. Although the treated eye did not develop dragging of the retinal vessels or retinal detachment, it is unfortunately blind. PMID- 3840678 TI - Acetate metabolism in the mammary gland of the lactating ewe. AB - Acetate metabolism in the mammary gland of lactating ewes was studied by continuous infusion of radioisotopic [U-14C]sodium acetate and measurement of mammary gland arteriovenous difference and blood flow. Entry rate of acetate into the whole body averaged 75 +/- 7 mumol min-1 kg-1 liveweight and 22.1 +/- 2.7% of total CO2 production was derived from acetate. Acetate was both utilized and produced by the mammary gland. Acetate uptake was related linearly (r2 = 0.94) to arterial concentration and gross utilization of acetate accounted for 16.2 +/- 2.6% of whole-body entry rate. Endogenous acetate production by the mammary gland increased linearly (r2 = 0.90) as milk yield rose, and accounted for 25.6 +/- 2.7% of the gross mammary utilization of acetate. The proportion of mammary CO2 derived from acetate (22.5 +/- 3.9%) was similar to that of the whole body. The uptake of acetate, 3-hydroxybutyrate, esterified fatty acids and plasma free fatty acids accounted for about 25, 13, 60 and 4% of milk fatty acid carbon respectively, after correction for the oxidation of acetate, but not of the other substrates. Metabolism of acetate in the mammary glands of lactating ewes appears quantitatively more important than that in cows, but similar to that in goats. PMID- 3840679 TI - A flexible automated data reduction system for immunoassay. PMID- 3840680 TI - The use of propidium iodide in cytochemical studies of interphase chromatin structure. AB - Different cytochemical conditions of using Propidium Iodide, a phenanthridinic fluorochrome specific for double-stranded nucleic acids, have been considered to study some structural aspects of the interphasic chromatin. Some molecular properties of the dye allow to define the structure of chromatin fibre (degree of condensation) by means of thermal denaturation of DNA, fluorochromization after extraction of different chromatin components and fluorochromization in condition of low dye-substrate molar ratio (relative unsaturation of DNA). Different biological situations such as cell specialization, neoplastic transformation and life cycles have been examined choosing some typical models (hepatocytes, nucleated erythrocytes, lymphocytes, endometrial cells). PMID- 3840681 TI - A FORTRAN program for the construction of Selby-Olson tables. PMID- 3840682 TI - Identification of two binding sites for wheat-germ agglutinin on polylactosamine type oligosaccharides. AB - The carbohydrate-binding properties of wheat-germ agglutinin (WGA) have been studied by using glycopeptides isolated from the cell surfaces of a cultured murine myeloid cell line (416B). The glycopeptides were passed through affinity columns of lentil lectin (LCA), concanavalin A (Con A) and WGA arranged in series so that material reaching the WGA column had failed to bind to LCA or Con A. WGA binding glycopeptides were step-eluted with 0.01 M, 0.1 M and 0.5 M-N acetylglucosamine (GlcNAc), to yield weak (WGA-W), intermediate (WGA-I) and strong (WGA-S) affinity fractions. WGA-W and WGA-I contained 'N'- and 'O'-linked oligosaccharides bound to separate polypeptides. WGA-S consisted almost entirely of N-linked components. Our analytical work was concentrated mainly on the N linked fractions. In these carbohydrates WGA affinity was directly proportional to molecular size but inversely related to N-acetylneuraminic acid content. The binding of the weak-affinity fraction was dependent on N-acetylneuraminic acid, but the intermediate- and strong-binding species interacted with the lectin by N acetylneuraminic acid-independent mechanisms. N-linked glycopeptides in each WGA binding class were almost totally degraded to monosaccharides by the concerted action of the exoglycosidases neuraminidase, beta-galactosidase and beta-N acetylglucosaminidase. Treatment with endo-beta-galactosidase caused partial depolymerization, yielding some disaccharides but also a heterogeneous population of partially degraded components. These findings suggest that WGA binds with high affinity to internal GlcNAc residues in large oligosaccharides containing repeat sequences of Gal beta(1----4)GlcNAc beta(1----3) (i.e. polylactosamine-type glycans). N-Acetylneuraminic acid is involved only in low-affinity interactions with WGA. WGA therefore displays an intricate pattern of saccharide specificities that can be profitably utilized for structural analysis of complex carbohydrates. PMID- 3840684 TI - Purification, from cultured human choriocarcinoma cells, of a 75000-Mr protein reacting with antibodies to a synthetic peptide based on a cloned human endogenous provirus nucleotide sequence. AB - We previously detected in cultured choriocarcinoma cells a 75000-Mr polypeptide defined by immunoblotting with antibody to a synthetic peptide Sp23 (Cys-Glu-Asn Pro-Ser-Gln-Phe-Tyr-Glu-Asp-Leu) based on a cloned human endogenous proviral nucleotide sequence. On immunohistological staining, anti-Sp23 stains antigen(s) in the syncytiotrophoblasts of first-trimester placentas and in renal-cell adenocarcinoma tissues. The present report describes purification to homogeneity of the protein from cultured choriocarcinoma cells. The procedure involves extraction with non-ionic detergent and h.p.l.c. using, sequentially, gel permeation, anion-exchange and reverse-phase columns. The yield was 110 micrograms/g of total choriocarcinoma-cell protein. The results indicate that the purified protein is a monomeric and relatively hydrophilic molecule of Mr 75000. PMID- 3840683 TI - Increase of uncoupling protein and its mRNA in brown adipose tissue of rats fed on 'cafeteria diet'. AB - The effect of 'cafeteria diet' on mitochondrial uncoupling protein in brown adipose tissue of rats was examined. 'Cafeteria diet' induced an increase of the 32 kDa uncoupling protein in electrophoresed proteins of brown-fat mitochondria. Use of a cDNA probe corresponding to uncoupling-protein mRNA indicated that this mRNA was increased in rats fed on the 'cafeteria diet'. Nevertheless, this effect was weak compared with that observed in rats adapted to cold. PMID- 3840685 TI - Involvement of 3-dehydroecdysone in the 3-epimerization of ecdysone. AB - The epimerization of ecdysone to 3-epiecdysone has been investigated in a dialysed cytosolic enzyme preparation from midgut of sixth instar Spodoptera littoralis larvae, with particular emphasis on establishing the intermediacy of 3 dehydroecdysone. Incubation of ecdysone with the dialysed cytosolic preparation furnished 3-dehydroecdysone as the only detectable product, the reaction being oxygen-dependent. The enzyme preparation catalysed reduction of 3-dehydroecdysone to 3-epiecdysone and ecdysone in the presence of NADH or NADPH. Whereas formation of 3-epiecdysone greatly predominated over that of ecdysone in the presence of NADPH, the converse applied when the cofactor was NADH. 3-Epiecdysone incubated with the enzyme preparation in the presence of various cofactors was not metabolized, indicating the irreversibility of the reduction of 3-dehydroecdysone to 3-epiecdysone and, hence, of the 3-epimerization process. The foregoing results, together with comparison of the metabolism of 3-dehydro[3H]ecdysone and [3H]ecdysone by the enzyme preparation in the presence of unlabelled ecdysone and NADPH, support the intermediacy of 3-dehydroecdysone in the 3-epimerization of ecdysone. PMID- 3840686 TI - Characterization of a glycoprotein fraction with an unusual composition from eel serum. AB - A glycoprotein fraction was extracted from eel serum with a high carbohydrate content of 60% as determined by gas-liquid chromatography. Remarkable is the presence of glucose (5%) which is not attributable to a contaminating glycolipid. Affinity chromatography on wheat germ agglutinin immobilized on to agarose beads results in two glycoproteins with a molecular weight of 17200 and 31300, respectively, as determined by SDS-PAGE (polyacrylamide gel electrophoresis). They differ markedly in their sialic acid content. All of the neuraminic acid is terminally bound and exclusively N-acetylated. PMID- 3840687 TI - The reactive site of silkworm hemolymph antichymotrypsin is located at the COOH terminal region of the molecule. AB - The complex of silkworm larval hemolymph antichymotrypsin (Mr = 43,000) and C chain of bovine alpha-chymotrypsin was obtained. This complex showed two NH2 terminal amino acid sequences identical to those of intact silkworm antichymotrypsin and C-chain of alpha-chymotrypsin, respectively. Alkali treatment of the complex brought about its dissociation and the separated inhibitor component (Mr = 36,000) had an NH2-terminal amino acid sequence identical to that of intact silkworm antichymotrypsin. These results suggest that the reactive site of this inhibitor is located at the COOH-terminal region of the molecule and that the nature of association of this inhibitor and alpha chymotrypsin is an acyl-bond. PMID- 3840688 TI - Measurement of ionized calcium in blood platelets with a new generation calcium indicator. AB - Fura 2, a new generation calcium indicator, has a 30 fold brighter fluorescence than Quin 2, shows wavelength shifts upon calcium binding and has a relatively low buffering capacity for free calcium. Quin 2, the most widely used fluorophore, on the other hand, shows no wavelength shifts and has a very high affinity for free calcium. Therefore, we have compared the relative merits of these two fluorophores for monitoring agonist induced alterations in platelet cytosolic calcium. Platelets loaded with Fura 2 showed a significant rise in cytosolic calcium when stirred with agonists such as epinephrine, arachidonate and thrombin, whereas Quin 2 loaded platelets demonstrated a rise in cytosolic calcium only with thrombin stimulation. A rise in agonist induced calcium in Fura 2 loaded platelets was prevented when the cells were exposed first to antagonists such as aspirin or prostaglandin E1. Arachidonate refractory platelets, upon stirring with a single agonist, did not show a significant elevation in cytosolic calcium. However, when refractory platelets were first exposed to epinephrine and then challenged with arachidonate, they revealed a significant elevation in cytosolic calcium. Unlike Quin 2, Fura 2 at the highest concentration tested did not inhibit platelet function. Improved properties of Fura 2 suggest that it may be a useful agent to study agonist induced alterations in cytosolic calcium levels in blood platelets. PMID- 3840689 TI - Hyaluronic acid synthesis in articular cartilage: an inhibition by hydrogen peroxide. AB - The synthesis of hyaluronic acid by bovine articular cartilage in culture was inhibited after treatment with xanthine oxidase and hypoxanthine. Through the use of catalase, superoxide dismutase and the specific iron chelator diethylenetriaminepentaacetic acid, the active species responsible for inhibition was shown to be hydrogen peroxide. Hydrogen peroxide generated by glucose oxidase was also inhibitory. Some recovery of hyaluronic synthesis was evident after a further period of culturing. Proteoglycan synthesis was inhibited in parallel with hyaluronic acid synthesis. PMID- 3840690 TI - Alterations of the cerebroside fraction of human thyroid glycosphingolipids in Graves' disease. AB - The influence of Graves' disease in human thyroid neutral glycosphingolipids was investigated. The major alteration was in the cerebroside fraction. Although the total amount of cerebroside was not different, the relative proportion of the bands of glucosylceramide separated on borated thin-layer plates was greatly modified in the disease. The band of glucosylceramide containing phytosphingosine and hydroxylated fatty acids decreased strongly, whereas the band with C18 sphingosine and normal fatty acids increased simultaneously. No change was observed in the content of galabiosylceramide. A slight elevation was seen in the amount of globoside at the expense of globotriaosylceramide. PMID- 3840691 TI - Effects of the lipidperoxidation product 4-hydroxynonenal and related aldehydes on proliferation and viability of cultured Ehrlich ascites tumor cells. AB - The mechanism by which the lipid peroxidation product 4-hydroxynonenal and several other homologous, yet non biogenic aldehydes inhibit proliferation of cultured Ehrlich ascites tumor cells has been studied. Incubation of cells (5 X 10(-4)/ml) in a minimum essential medium supplemented with 10 or 20 microM 4 hydroxynonenal reduces the 36-hr cell count to 65 and 30% of the control value. The reduced growth rate is most likely due to a blockage of the DNA synthesis. Cells labelled by a [3H]-thymidine pulse prior to exposure to 4-hydroxynonenal (20 microM, 8 hr) showed no change of the specific radioactivity of the DNA, indicating that no de novo synthesis occurred in the presence of the aldehyde. In the absence of the aldehyde the specific radioactivity of the DNA decreased by 25%. A 2-hr incubation in the presence of 10 or 20 microM of 4-hydroxynonenal reduced [3H]-thymidine incorporation into the HClO4 insoluble fraction to 85 and 50% of the controls, but had no effect of the [3H]-thymidine and 86Rb uptake. Moreover, examination of the cell cultures by the Trypan Blue exclusion technique revealed that 20 microM 4-hydroxynonenal does not cause cell death. The high reactivity of 4-hydroxynonenal towards sulfhydryl groups suggests that the aldehyde inhibits DNA synthesis by interacting with a functional SH group of DNA polymerase. The specific action on DNA synthesis is abolished at an aldehyde concentration of 50 microM, which leads to 30% (6 hr exposure) and 95% (36 hr exposure) of dead cells. The cytostatic index (CI), i.e. concentration at 50% Trypan Blue positive cells/concentration at 50% inhibition of cell growth deducted from the dose effect curves is 3.0 for 4-hydroxynonenal. The other homologous 4-hydroxyalkenals with chain length of 5, 6, 7, 8, 10 and 11 carbon atoms also inhibit cell growth. The CI varied from 1.20 to 1.94, indicating that these non biogenic 4-hydroxyalkenals have a distinctively lower specific effect on proliferation than the biogenic 4-hydroxynonenal. The Michael adducts of 4 hydroxynonenal with glutathione and cysteine were nearly one order of magnitude less toxic than the free aldehyde, the CI (2.41 cysteine adduct, 2.06 glutathione adduct), however, were not improved since the growth inhibitory action was also reduced. PMID- 3840693 TI - Feeding frequency for lactating cows: effects on digestion, milk production and energy utilization. AB - The results are reported of four feeding experiments in which lactating cows were given fixed rations of hay and high-cereal concentrates at different meal frequencies. In Expt 1 the total ration was given in two and twenty-four meals daily and in Expts 2-4, the concentrates were given in two and five or six meals and the hay was given twice daily. The diets contained 600-900 g concentrate/kg. In all the experiments, more frequent feeding of these low-roughage diets reduced milk fat depression and increased milk fat yield. In each experiment the increase was greater with the diet containing the lower proportion of hay. There was no significant effect on milk yield, the protein or lactose contents of the milk or live-weight gain. Digestibility of dry matter, organic matter and energy was increased in one of the experiments but not in two others in which it was measured. More frequent feeding was calculated to increase the net energy secreted in milk and there was a tendency for it to increase the net energy in live-weight gain with diets containing 600 or 700 g concentrate/kg but to decrease it with diets containing 800 or 900 g concentrate/kg. These results are discussed in relation to theories of energy partition in lactating cows. It is concluded that at fixed feed intakes, the main response to increased meal frequency is likely to be a reduction in milk fat depression and that this will be confined to diets containing not more than about 200 g modified acid-detergent fibre/kg dry matter. PMID- 3840692 TI - Participation of polymorphonuclear leukocyte-derived factor in murine tumour cell killing. AB - Previous studies showed that murine polymorphonuclear leukocytes (PMNs) lyze tumour cells in the presence of wheat germ agglutinin or actinomycin D. This paper reports studies on whether a soluble factor participates in PMN-mediated cytolysis dependent on lectin or a chemotherapeutic drug. Tumour lysis was observed with supernatants from PMN cocultured with wheat germ agglutinin or actinomycin D. The supernatant from cultures of PMNs alone was not cytotoxic, but addition of these agents to the supernatant induced tumour lysis. PMNs released a soluble factor spontaneously into the medium and cytolysis was induced by a combination of this factor and wheat germ agglutinin or actinomycin D. This factor was not an oxygen metabolite, but a protein with a molecular weight of approximately 100 K daltons. These results suggest that a soluble factor(s) from PMNs participates in tumour killing in cooperation with appropriate reagents. PMID- 3840694 TI - Performance of dairy cows offered isonitrogenous diets containing urea or fishmeal in early and in mid-lactation. AB - Sixteen Friesian cows were used in Expt 1 to measure the effect of substituting urea-N with fishmeal-N either in early lactation (Part 1) or in mid-lactation (Part 2). In Part 1 (days 15-84 of lactation) the major N constituent of the concentrate was urea (U), urea-N: fishmeal-N in the ratio 2:1 (UF) or 1:2 (FU), or fishmeal (F). In Part 2 (days 84-175 of lactation) only urea (UM) and fishmeal (FM) were used. Replacement of urea-N with fishmeal-N significantly (P less than 0.05) increased yield of milk protein both in early and in mid-lactation. At both stages of lactation the cows were, by calculation, in positive energy balance. In mid-lactation replacement of urea-N by fishmeal-N significantly depressed (P less than 0.001) the concentration of fat in milk. Blood urea concentration decreased with increasing fishmeal inclusion (P less than 0.05) from U to FU. In Expt 2 the diets used in Expt 1, Part 1, were offered at a maintenance level of feeding to non-pregnant, non-lactating heifers in a 4 X 4 Latin square design experiment. Digestibility of dry matter, organic matter and cell-wall constituents increased progressively (P less than 0.05) with the first two increments of fishmeal inclusion. A major effect of replacing urea-N with fishmeal-N was to increase digestible organic matter intake (DOMI) and differences in DOMI between treatments in Expt 1, Part 1, accounted for observed differences in performance. PMID- 3840695 TI - The utilization by pigs of methionine from five protein concentrates compared with synthetic methionine. AB - Pigs (n 100) between 28 and 56 d of age were given diets containing one of five protein concentrates ad lib. The utilization of methionine from the protein concentrates was compared with synthetic methionine. Increasing the methionine content of the diets from 1.5 to 2.2 g/kg diet increased the weight gains of the pigs from 61 g/d to 198-292 g/d. The feed conversion efficiencies decreased from 2.56 to 1.34-1.56. The utilization of methionine from the protein concentrates for weight gain, as compared with synthetic methionine, was meat meal A 0.89, meat meal B 0.97, soya-bean meal 1.02, cotton-seed meal 0.87 and dried skim milk 1.04. PMID- 3840696 TI - Duodenal xanthine oxidase (EC 1.2.3.2) and ferroxidase activities in the rat in relation to the increased iron absorption caused by peroral xylitol. AB - The effect of peroral administration of xylitol on the absorption of iron and the activities of xanthine oxidase (EC 1.2.3.2) and ferroxidase in rat duodenal wall was studied. Adult male rats were given the basal diet containing 200 g xylitol/kg or the same diet containing no added carbohydrates for 8 weeks. Both feeding groups comprised twelve animals. Xylitol significantly increased serum and liver Fe concentrations with a concomitant, significant increase in the duodenal xanthine oxidase activities, but caused a marginal increase in the duodenal ferroxidase activities. In vitro, sugar alcohols reduced the binding rate of Fe to transferrin. The xylitol-induced increase of Fe absorption may involve the following mechanism: the high intraluminal xylitol concentration of the xylitol-fed rats keeps Fe in the form of a soluble complex for a prolonged period of time, due to the slow absorption of xylitol. The polyol-Fe complex in turn induces xanthine oxidase and ferroxidase formation. PMID- 3840697 TI - Hemoglobin New Mexico: beta 100 (G2) Pro----Arg. A variant hemoglobin associated with erythrocytosis. AB - Hemoglobin New Mexico beta 100 Pro----Arg was found in a 4-year-old black male and represents a new mutation. The propositus is also heterozygous for Hb S. The variant shows high oxygen affinity, reduced cooperatively, and a lowered alkaline Bohr effect. Addition of allosteric effectors leads to improved cooperativity and a Bohr effect that is similar to that of Hb A. The high percentage of the variant (53.5%) and its increased oxygen affinity result in erythrocytosis in this patient. The hemoglobin level and packed cell volume values are elevated. In spite of these factors the patient appears healthy and shows no discomfort. The altered oxygen-linked properties of this variant can be related to the fact that the substituted residue contributes to the alpha 2 beta 1/alpha 1 beta 2 subunit interface, an area that is critical not only to the allosteric transitions between the oxy and deoxy states but also to stabilizing the hemoglobin tetrameer. PMID- 3840698 TI - The proteins of human lung surfactant. AB - Human pulmonary surfactant was purified from bronchoalveolar lavage of patients. The proteins present in surfactant were analyzed by SDS-polyacrylamide gel electrophoresis into serum and non-serum components. One non-serum surfactant protein (Mr = 43 000) was then identified in the 100 000 X g supernatant of a lung homogenate on the basis of phospholipid binding. This lung protein was purified and partially characterized. The presence of 3-methyl histidine and reaction in Western blot analysis with antibody against chicken muscle actin both strongly suggested that the 43 000 Da protein of human surfactant is indeed cytoplasmic actin. It is proposed that this surfactant protein is involved in the secretion and not necessarily in the function of surfactant. PMID- 3840699 TI - Mouse monoclonal antibodies with specificity for the melanoma-associated ganglioside disialyllactosylceramide (GD3) also react with the structural analogue disialylparagloboside. AB - A mouse monoclonal IgM antibody, 4.2, has previously been shown to bind preferentially to the surface of human malignant melanoma cells and to have specificity for the GD3 ganglioside (NeuAc alpha 2----8NeuAc alpha 2----3Gal beta 1----4GlcCer). Using overlay of antibodies on thin-layer chromatograms with glycolipids of various sources, it was shown that antibody 4.2, a further IgM and two IgG3 mouse monoclonal antibodies, selected on the basis of reactivity with GD3, also bound with similar strength to the structural analogue NeuAc alpha 2--- 8NeuAc alpha 2----3Gal beta 1----4GlcNac beta 1----3Gal beta 1----4GlcCer or disialylparagloboside. The SK-MEL 28 melanoma cell line used for immunization was shown to contain a large amount of GD3 but to lack disialylparagloboside. The demonstrated cross-reactivity may be of importance when considering the use of these antibodies for biochemical and medical purposes. PMID- 3840700 TI - Evidence for plasma membrane impermeability to small ions in acrosome-intact mouse spermatozoa bound to mouse zonae pellucidae, using an aminoacridine fluorescent pH probe: time course of the zona-induced acrosome reaction monitored by both chlortetracycline and pH probe fluorescence. AB - Previous studies have shown that capacitated mouse spermatozoa bind to zonae pellucidae of mouse eggs with acrosomes apparently intact. The question addressed in this study was the following: are the membrane permeability barriers of the apparently acrosome-intact sperm still retained or is there a preliminary stage of the acrosome reaction in which these barriers are lost and the intracellular space becomes accessible to extracellular substrates? The experimental approach was to use the fluorescent pH probe 9-amino-3-chloro-7-methoxyacridine, which accumulates in intracellular spaces of lower pH than the suspending medium with the result that the cells become fluorescent. Freshly capacitated mouse spermatozoa bound to isolated zonae showed uniform fluorescence over the head and midpiece with this fluorescent probe at early times of binding. The fluorescence was abolished by NH4+ and nigericin, agents that equilibrate H+ across cell membranes. At these early times of binding, the acrosomes were fully intact as judged by chlortetracycline fluorescence pattern, which itself was unaffected by either N4+ or nigericin. The time course of the loss of this chlortetracycline pattern characteristic of acrosome-intactness was closely paralleled by loss of fluorescence of 9-amino-3-chloro-6-methoxyacridine over the first 90 min; thereafter, loss of the chlortetracycline pattern was somewhat more rapid. This result shows that acrosome-intact sperm bound to zonae pellucidae retain the permeability barriers of the plasma membrane to small cations; no evidence was found for an early stage of membrane "leakiness" preceding the acrosome reaction. The ionophore A23187 induced a very rapid acrosome reaction in sperm bound to isolated zonae, as judged with both fluorescence probes. This rapid reaction was partially inhibited by 3-quinuclidinyl benzilate, which, in the absence of ionophore, completely blocks the occurrence of the acrosome reaction in sperm bound to zonae. This suggests involvement of a specific calcium entry mechanism in the acrosome reaction of mouse sperm induced by mouse zonae pellucidae. PMID- 3840701 TI - Principles of evolutionary learning design for a stochastic neural network. PMID- 3840702 TI - Simulation modelling of the population dynamics of cereal aphids. AB - A simulation model explaining the population dynamics of the grain aphid (Sitobion avenae), a serious pest of wheat in Western Europe, is described. The model includes the effects of crop development and some natural enemies on the biology of the aphid. It is concluded that although much of the population dynamics of the aphid, especially in relation to its host plant, is now well understood, many uncertainties still remain concerning natural enemies. As these organisms seem able to prevent cereal aphid outbreaks, in some years, these gaps are presently preventing the development of a reliable forecasting scheme. PMID- 3840703 TI - Evolve III: a discrete events model of an evolutionary ecosystem. AB - Evolve III is a discrete events model of an evolutionary ecosystem. The model includes three levels of organization: population, organism and genetic structure. Each of these components was modeled independently, so that selective replacement of subsystems can be used to create families of models capable of testing alternative hypotheses about the real system. To demonstrate the use of the model we describe an experiment on the relationship between adaptability of populations and the variability of the environment. Populations cultured in a constant environment usually dominated those cultured in a variable environment when both were placed in a variable environment at an early stage of development, whereas the opposite is the case at later stages of development. This agrees with experiments on laboratory microcosms and lends credence to the potential predictive value of the model. PMID- 3840704 TI - A simulation of T4 bacteriophage assembly and operation. AB - A model is presented for the self-assembly and operation of a bacteriophage comparable with the T4 bacteriophage that infects Escherichia coli. The model treats protein molecules as simple units obeying the principle free energy minimization, and exhibiting the properties of quasi-equivalence and conformational switching. A computer program incorporating the model has been developed. The results of simulation using this program are presented. PMID- 3840705 TI - A topological model of cell division: structure of the computer program. AB - The general structure of a computer program (CD3D) simulating division in a sheet of cells is presented. The program is based on a topological representation of cell division previously developed by the authors, and the biological background to the model is discussed. The computer modelling of the various elements of the model (i.e. vertices, edges and meshes) is described, and an annotated description of the subroutines making up the program is given in an Appendix. Although the program and model are specifically designed to represent cell division processes, the graph framework may have applicability in other biological subject areas where dynamic relationships between elements are involved. PMID- 3840706 TI - Recent progress in modelling and simulation of three-dimensional tumor growth and treatment. AB - This paper illustrates how to apply methods of systems analysis, control theory and simulation to the field of biology and medicine. For this purpose normal and abnormal cell growth has been modelled at different levels. It was possible to simulate three-dimensional tumor growth and different kinds of treatment. The paper shows how tumor treatment may be optimized in the long run using computer simulation experiments as a powerful new tool prior to clinical therapy. PMID- 3840707 TI - Recovering from birth: achieving a "10". PMID- 3840708 TI - Carbenoxolone and deglycyrrhized liquorice have little or no effect on prostanoid synthesis by rat gastric mucosa ex vivo. AB - Rats were given either carbenoxolone 50 mg kg-1, deglycyrrhized liquorice 1 g kg 1 or vehicle by gastric tube. The doses were repeated 16 h later, and the stomachs removed after another 2 h. The amounts of prostaglandin E (PGE), 6-keto PGF1 alpha and thromboxane B2, measured by radioimmunoassay in extracts of the gastric corpus and antrum mucosa, were similar in the treated animals and the controls. We conclude that in rats, carbenoxolone and deglycyrrhized liquorice may exert their anti-ulcer effect by a non-prostaglandin mechanism. This contrasts with the mechanism through to occur in man with carbenoxolone. PMID- 3840709 TI - Femoral mycotic aneurysm presenting as arthritis and purpura. AB - A case is described with recurrent arthritis and skin rash confined to the right lower limb and exacerbated on each occasion by exercise. Investigation established this to be due to a mycotic aneurysm of the right common femoral artery. Treatment with excision and grafting and antibiotics resulted in full recovery. Mycotic aneurysm and the unusual presenting features in this case are discussed. PMID- 3840710 TI - Reiter's syndrome--a possible consequence of artificial insemination? AB - Artificial insemination by donor (AID) has been complicated by the transmission of several genital infections. We describe the case of a man with Reiter's syndrome whose illness followed AID treatment of his wife. PMID- 3840711 TI - The radiomimetic properties of a platinum drug. AB - CHIP (cis-dichlorobis isopropylamine trans-dihydroxy platinum IV) is a second generation platinum co-ordination complex which potentiates the effects of radiation. Comparisons of the biological effects of CHIP and X rays upon Chinese hamster (ovary) cells have shown similarities with respect to the shape of the dose-response curves, clone size distributions and perturbation of the cell cycle. Unlike irradiated cells however, CHIP-treated cells showed no recovery from sublethal damage and no variation in sensitivity throughout the cell cycle. CHIP is a radiomimetic drug in some respects but not in others. PMID- 3840712 TI - CT appearance of mycotic aneurysms of the intrapulmonary arteries in the right lung. PMID- 3840713 TI - A new technique to reconstruct the glans penis in a patient with a Buschke Loewenstein tumour. PMID- 3840714 TI - Differences in regional brain concentrations of neuropeptide Y in spontaneously hypertensive (SH) and Wistar-Kyoto (WKY) rats. AB - Regional brain concentrations of neuropeptide Y immunoreactivity (NPY) were measured in age-matched Wistar-Kyoto (WKY) and spontaneously hypertensive (SH) rats using a sensitive and specific radioimmunoassay developed within our laboratory. In 5 of the 9 brain regions examined the SH rats had significantly lower NPY levels compared to the WKY strain. The largest differences occurred within the cortex (-43%), and cervical (-30%) and thoracic spinal cord (-30%), whilst smaller differences were observed in the midbrain (-11%) and medulla oblongata-pons (-18%). The concentrations of NPY in the hypothalamus and hippocampus did not vary between the strains. The SH rats contained significantly greater (+18%) NPY levels in the striatum compared to the WKY rats. PMID- 3840715 TI - Muscarinic cholinergic receptors in the human spinal cord: differential localization of [3H]pirenzepine and [3H]quinuclidinylbenzilate binding sites. AB - The localization of muscarinic cholinergic receptor subtypes was studied in the human spinal cord using in vitro labelling of cryostat sections with [3H]quinuclidinylbenzilate (QNB) and [3H]pirenzepine (PZ) followed by autoradiography. The highest densities of [3H]QNB binding were localized in laminae II (substantia gelatinosa) and IX (motor neurons); in contrast, the highest density of [3H]PZ binding was localized to lamina II where the binding density was 22-32% higher than in lamina IX. These results suggest that the M1 and M2 muscarinic cholinergic receptor subtypes may be differentially localized in sensory and motor regions of the human spinal cord. PMID- 3840716 TI - Effects of nerve growth factor and heart cell conditioned medium on neurite regeneration of aged sympathetic neurons in culture. AB - The effects of nerve growth factor (NGF) and heart-cell-conditioned medium (HCM) on the neurite regeneration of aged sympathetic neurons were investigated in culture. Investigation of HCM was carried out by two different methods: one was the use of whole HCM on collagen substratum, which reflected component(s) effective in solution (HCM-S); the other was the use of polyornithine (PORN) binding component(s) (P-HCM). Superior cervical ganglion neurons prepared from male mice from 6 to 30 months of age were cultured in MEM-10% FCS on collagen or gelatin-PORN substratum for 3 days. The number of neurons with neurites and the length of neurites were quantified as neurite production and elongation, respectively. Neuronal survival was not affected by addition of NGF, HCM-S or P HCM. Neurite production of early adult neurons was enhanced by NGF, HCM-S or P HCM. In contrast, neurite production of aged neurons was enhanced by only HCM-S, but not NGF or P-HCM. HCM-S did not promote neurite elongation in neurons at any age. Neurite elongation of early adult neurons was enhanced by NGF or P-HCM. Neurite elongation of aged neurons was enhanced by P-HCM. However, responsiveness of NGF for neurite elongation varied according to substrata. No age-related difference was found in neurite production and elongation in the absence of NGF, HCM-S or P-HCM. These results indicate that responsiveness of aged sympathetic neurons is various in different growth factors. PMID- 3840717 TI - Vasopressin depolarizes lateral horn cells of the neonatal rat spinal cord in vitro. AB - The effects of vasopressin (VP) on lateral horn cells including a number of sympathetic preganglionic neurons contained in thin in vitro slices of neonatal rat spinal cord were investigated by means of intracellular recording techniques. Superfusion of (Arg8)-vasopressin (AVP, 0.01-1 microM) caused a depolarization leading, in the majority of lateral horn cells, to repetitive discharges. The AVP depolarization which could be partially reduced by low Ca/high Mg solution or tetrodotoxin, was accompanied by an increase in membrane resistance and the response was nullified near the membrane potential at which the spike afterhyperpolarization was abolished. A clear reversal of the response was not observed upon further hyperpolarization. The AVP response was blocked by the VP1 antagonist, D-(CH2)5 Tyr (Me)-AVP, whereas, deamino (D-Arg8-vasopressin), a VP2 agonist, at high concentrations (greater than or equal to 50 microM) was either ineffective or produced a small depolarization. The results indicate that AVP, acting mainly on VP1 receptors, excited lateral horn cells by a direct depolarization and an indirect effect via the release of an excitatory transmitter(s). A reduction of a voltage-dependent K conductance may underlie the depolarizing effect of AVP. PMID- 3840718 TI - Neuropeptide Y immunoreactivity in the hamster geniculo-suprachiasmatic tract. AB - The distributions of neuropeptide Y (NPY) and avian pancreatic polypeptide (APP) immunoreactivity were examined in the suprachiasmatic nucleus and the geniculate area of male golden hamster brains. In some cases, colchicine was injected intraventricularly to aid in visualization of immunoreactive cell bodies. A group of hamsters were given bilateral or unilateral radiofrequency lesions of the geniculate area and neuropeptide Y immunoreactivity was examined in the suprachiasmatic nucleus after survival times varying between 8 and 300 days. Another group of hamsters received unilateral intraocular injections of anterograde tracers and the overlap of NPY-immunoreactive cells in the geniculate area and labeled retinal afferents was assessed. It was found that NPY- and APP immunoreactive fibers formed a dense plexus in the ventro-lateral suprachiasmatic nucleus. NPY-immunoreactive cell bodies were observed in the intergeniculate leaflet as well as in the external lamina of the anterior portion of the ventral lateral geniculate nucleus. Unilateral lesions of the geniculate produced a relative reduction in neuropeptide Y immunoreactivity in the ipsilateral suprachiasmatic nucleus whereas bilateral lesions produced a reduction of neuropeptide Y immunoreactivity in both suprachiasmatic nuclei. All NPY immunoreactive cells in the intergeniculate leaflet were overlapped by bilateral retinal afferents. In the ventral lateral geniculate nucleus, all NPY immunoreactive cells were overlapped by contralateral retinal afferents; however, not all such cells were in areas receiving ipsilateral retinal afferents. These results indicate that the hamster geniculo-suprachiasmatic tract originates in part from NPY-immunoreactive cell bodies and that these cells lie in areas receiving direct retinal afferents. PMID- 3840719 TI - [Clinical and dermatoglyphic findings in children of epileptic mothers]. PMID- 3840720 TI - Temperature-dependent influence of thiols upon glutathione levels in Chinese hamster ovary cells at cytotoxic concentrations. AB - Chinese hamster ovary cells were exposed to the sulfhydryl compound cysteamine at different temperatures (5 degrees C, 37 degrees C, 44 degrees C) at concentrations known to generate activated oxygen species. At 37 degrees C, the cellular glutathione (GSH) content increased linearly over the time of drug exposure (2 h) as compared to untreated cells or to cells kept at 5 degrees C during drug treatment. The 2-4-fold increase in GSH induced by cysteamine was more rapid at 44 degrees C than at 37 degrees C and showed a saturation effect at the higher temperature. The elevation of GSH could be completely blocked by DL buthionine-S,R-sulfoximine, an inhibitor of gamma-glutamylcysteine synthetase, or by incubation in a cystine-free medium during the period of drug treatment. The increased cellular GSH content induced by cysteamine alone at 37 degrees C or combined with heat at 44 degrees C decreased to the range of control values within 22 h after either treatment. Other thiols like cysteamine, namely cysteine, N-acetylcysteine, and dithiothreitol, were found to be similar in their potential to induce GSH elevation in Chinese hamster ovary cells. Cytotoxic effects of these sulfhydryl compounds were observed in the same concentration range as that for cysteamine (0-2 mM), but only if cells were plated at low densities (10(2)-10(4) cells/flask), and were completely blocked by the addition of catalase (50 micrograms/ml). In contrast, the elevation of GSH after thiol treatment (0.8 mM) was not modified by catalase. The data suggest that thiol treatment combined with hyperthermia leads to a rapid increase of GSH biosynthesis in Chinese hamster ovary cells which seems to be independent of the simultaneous generation of activated oxygen species by thiol autoxidation. PMID- 3840721 TI - Chromosome movement during meiotic prophase in crane-fly spermatocytes: III. Microtubules and the effects of Colcemid, nocodazole, and vinblastine. AB - The effects of Colcemid, nocodazole, and vinblastine on microtubules and on the movement of chromosomes during late diakinesis were investigated in spermatocytes of the crane fly Nephrotoma suturalis. The kinds of movements observed in untreated cells--sex bivalent rotations, sex bivalent excursions, and rotations and positional changes of autosomal bivalents--also were observed in drug-treated cells. These results were obtained in living cells in which the disruption and inhibition of microtubule assembly had been confirmed with polarized light microscopy. Effects of Colcemid and nocodazole also were assessed in fixed cells using electron microscopy. The results are in agreement with a hypothesis that microtubules are not a force-generating component of the molecular machinery that brings about prophase movements. PMID- 3840722 TI - Zymolyase removes callose from germinating pollen and pollen tube walls. AB - The impermeable callosic wall that surrounds germinating pollen grains and pollen tubes is removed by brief treatment with Zymolyase, an enzyme preparation that hydrolyzes linear glucose polymers with beta-1,3 linkages. Zymolyase treatment does not interfere with pollen tube growth or cylosis in the vegetative cell. PMID- 3840723 TI - [Social prognosis of children of mothers with psychiatric problems placed in infant institutions and children's homes in Prague]. PMID- 3840724 TI - Analyzing the structures, functions and evolution of two abundant gastrointestinal fatty acid binding proteins with recombinant DNA and computational techniques. AB - The structures of intestinal and liver fatty acid binding proteins (FABPs) have been determined from an analysis of the nucleotide sequences of cloned cDNAs. The primary translation product of intestinal FABP mRNA contains 132 residues (Mr = 15 124). Liver FABP mRNA encodes a 127 amino acid polypeptide (Mr = 14 273). In vitro co-translational cleavage and translocation assays showed that neither sequence has a cleavable signal peptide or signal peptide equivalent - suggesting that the FABPs do not enter the secretory apparatus but rather are targeted to the cytoplasm. A variety of computational techniques were used to compare the two FABP sequences. The results indicate that liver and intestinal FABP are paralogous homologues. A superfamily of proteins was defined which includes the FABPs, the cellular retinol and retinoic acid binding proteins, the P2 protein of peripheral nerve myelin, and a polypeptide known as 422 whose synthesis is induced during differentiation of 3T3-L1 cells to adipocytes. No sequence homologies were noted between any of these small molecular weight cytosolic proteins and nonspecific lipid transfer protein (sterol carrier protein 2), phosphatidylcholine transfer protein, serum albumin or apolipoprotein AI. The FABPs may have structural features responsible for lipid-protein interactions that are not present in these non-homologous sequences. The distribution of intestinal and liver FABP mRNAs in adult rat tissues and the changes in FABP gene expression which occur during gastrointestinal development support the notion that these proteins are involved in fatty acid uptake, transport and/or compartmentalization. However, differences in tissue distribution and periods of non-coordinate expression during gastrointestinal ontogeny suggest that the two FABPs have distinct functions. The relationship between intestinal and liver FABPs and similar sized cytosolic FABPs isolated from brain, skeletal and cardiac muscle remains unclear. Recombinant DNA techniques combined with comparative sequence analyses offer a useful approach for defining unique as well as general structure-function relationships in this group of fatty acid binding proteins. PMID- 3840725 TI - Improved reference-interval estimation. AB - We used two standard methods (the common percentile and the log-power gaussian transformation) and two novel methods (weighted percentile and smoothed spline interpolation) to estimate the 2.5th and 97.5th percentiles of 1000 sets of data from eight diverse distributional forms, generated by Monte Carlo simulation. For each distributional form we derived an estimate of optimal performance. Although none of the four proposed methods closely approximated the optimal performance bound, the spline interpolation method and the weighted percentile method were superior to the two standard methods in accurately estimating percentiles. PMID- 3840726 TI - A clinical and epidemiological study on eclampsia in the obstetrics and gynecology department of Catania in the years 1978-1983. AB - From January 1978 to July 1983 22 patients have recovered from eclampsia in the Obstetrics and Gynecology Department - Vitt. Emanuele II Hospital - Catania University. 64% of the patients had hypertension in pregnancy combined with edema in 92.85% of the cases (13 cases) and with proteinuria in 18% of the cases (4 cases). Eclampsia manifested itself before labour in 28.57% (6 cases), during labour in 19.05% (4 cases), in postpartum in 19.05% (4 cases) and in the successive three days after delivery in 33.33% (7 cases). Perinatal death rate was 11.28% and in all the cases it was due to intrauterine fetal death. In 22 patients treated there was a case of acute pulmonary edema and a case of maternal death. PMID- 3840727 TI - Association of parental consanguinity with decreased birth weight and increased rate of early death and congenital malformations. AB - Data on parental consanguinity have been recorded for all births in Norway since 1967. Pregnancy outcome for offspring of 848 women mated to their first cousins were compared with offspring of 1,696 control women. The stillbirth rate was 23.6 per thousand for cases and 13.4 for controls. The neonatal death rate was 34.9 per thousand for cases and 14.3 for controls. The recurrence risk for sibs for early death was 9.4% for cases and 4.2% for controls. The mean offspring birth weight was significantly lower (3377 g vs. 3491 g), and the variance in birth weight was slightly larger for cases than controls. The percentage of children with malformations detected shortly after birth was 4.6% for cases and 2.2% for controls. The differences may be attributed to the increased homozygosity in offspring of first cousins. The results have relevance for genetic counselling to consanguineous couples, as well as for the understanding of the etiology of adverse pregnancy outcome and for elucidating the causes of variation in birth weight. PMID- 3840728 TI - Morbidity following low-dose-rate selectron therapy for cervical cancer. AB - The Christie Hospital installed a Selectron afterloading machine in 1979. By early 1982 it became apparent that patients treated for carcinoma of the cervix using the Selectron had developed a high incidence of morbidity compared with patients treated by the standard Manchester radium technique. Initially, the majority opinion was that the patients had been overdosed, because little or no allowance had been made for the higher dose rate of 137Cs. The results of investigation suggest, however, that the main factor responsible for the morbidity was a change in technique, previously unrecognised, in that the rigid 137Cs applicators facilitate the use of a much higher proportion of long intrauterine tubes and larger vaginal components than used to be the case with radium. The evidence for this and the probable mechanism of the resulting damage are discussed. PMID- 3840729 TI - Acute large-bowel pseudo-obstruction. AB - The clinical and radiological features of acute large-bowel pseudo-obstruction occurring in 13 patients over a 7-year period are reviewed. Clinical features included atypical signs and symptoms of large-bowel obstruction and serious concomitant illness, including trauma in 10. The predominant radiological features were gross colonic dilatation, scant fluid levels, a gradual transition to collapsed bowel and a normal gas and faecal pattern in the rectum. Correct diagnosis was established by plain film and/or barium enema examination in the majority of cases (nine out of the 13). In the remaining four cases the diagnosis was made at laparotomy, although review of the radiographs suggested that the correct diagnosis could have been made pre-operatively in three. Instant barium enema is recommended in doubtful cases to rule out distal obstruction. Prompt recognition of the condition, with daily monitoring and conservative management, should eliminate unnecessary surgery and minimise the risk of caecal perforation. PMID- 3840730 TI - Adult hypophosphatemic osteomalacia: report of two cases. AB - Two cases of late hypophosphatemic osteomalacia are described: a male aged 30 who had the disease since he was 22 and a woman of 23 who had the disease since she was 14. Both presented with myopathy and bone pain, and showed hypophosphatemia, hyperglycinuria, reduced tubular phosphate reabsorption (TPR), increased hydroxyprolinuria and normal iPTH and iCT values. Radiologically the male had no Looser's zones and the woman did. Bone biopsy confirmed hypophosphatemic osteomalacia. Both cases were treated with vitamin D and oral phosphate and no improvement was observed. When treatment with 25(OH)D3 was initiated, no improvement was seen and afterwards this was combined with treatment using 1.25(OH)2D3 and from this time on a clinical improvement of the myopathy became evident in both patients. In the woman, healing of the bone lesions occurred at the same time as that of the myopathy, whereas in the male the bone lesions became worse. Healing of the myopathy was only obtained when treatment with 1.25(OH)2D3 was begun. Both patients had reduced values of 2.3 erythrocytic DPG and low level of serum phosphorus when the myopathy was cured, which suggests a lack of effect of 2.3 DPG or serum phosphorus as a cause of the myopathy. Although this had been attributed to a deficiency in the function of 25(OH)D3, the response to 1.25(OH)2D3 and due to the effects of this metabolite on calcium transport in muscle, suggests that the myopathy which occurs in late hypophosphatemic osteomalacia is a result of deficiency or resistance to the muscular effect of this metabolite. We cannot explain the lack of bone healing in the man and further therapeutic studies are required. PMID- 3840731 TI - Neodymium-YAG laser and cataract surgery. PMID- 3840732 TI - Combination of flow cytometry and transbronchial needle aspiration in the diagnosis of mediastinal lymphoma. PMID- 3840733 TI - Multivariate analysis and list mode processing of murine hemopoietic subpopulations for cytokinetic studies. AB - Multivariate analyses and list mode data processing were used to obtain cytokinetic information on flow cytometrically distinct hemopoietic subpopulations. In one application, viable, unfixed hemopoietic subpopulations were discriminated on the basis of cyanine dye fluorescence and orthogonal light scatter; Hoechst dye fluorescence was measured to determine the proliferative status of the subpopulations. In another application, ethanol-fixed mouse bone marrow cells were triply stained with Hoechst dye, rhodamine-conjugated wheat germ agglutinin (WGA), and a fluorescein-labeled monoclonal antibody against bromodeoxyuridine. In both of these studies, flow cytometric data for all three variables were acquired in list mode fashion, stored on magnetic tape, and processed by list mode software on a computer-based multivariable pulse-height analyzer. In the first application, subpopulations distinguished by cyanine dye intensity and light scatter appeared to be more related to cell lineage and cell size than proliferative status. In the second application, WGA affinity discriminated two subpopulations in mouse bone marrow S-phase cells in each subpopulation that actively incorporated bromodeoxyuridine (BrdUrd). List mode data processing obviates the need for routine electronic sorting of cells and thus facilitates characterization of discriminated subpopulations. In this regard, it is particularly useful for the study of flow cytometrically distinct, low frequency subpopulations. PMID- 3840734 TI - Computerized data retrieval system for colon surgery. AB - Good clinical practice is based on a continuous reevaluation of one's own work as compared with published standards. That which limits particularly the private practitioner from examining and publishing his data, is not the lack of desire, but the scarcity of opportunities and resources to do so. Computers as tools for data retrieval and analysis for research purposes and patient management have been available for some time. They have been of limited utility for most surgeons because of an inhibiting size and/or training period, and illogical design. The authors discuss the limitations of much of the available computer "tools," and present a system, METABASE, specifically designed for colon and rectal surgeons to use in their private practices for data retrieval and analysis. PMID- 3840735 TI - [Effect of the accumulation and elimination of transoleinic acid (elaidic acid) in the fatty tissue of rats fed a partially hydrogenated oil]. PMID- 3840736 TI - Bioactive parathyroid hormone in the rat: effects of calcium and calcitriol. AB - Bioactive PTH was measured in Wistar rats under a variety of experimental conditions. The mean activity in normal rat sera was 0.17 +/- 0.12 ng/ml (expressed in terms of bovine PTH 1-34). Sera from animals reared on a vitamin D deficient diet showed a mean value of 0.46 +/- 0.24 ng/ml (P less than 0.01), whereas sera from animals with 1,25-dihydroxyvitamin D (1,25(OH)2D) deficiency had a mean activity of 0.62 +/- 0.23 ng/ml (P less than 0.01). Dietary calcium deficiency also resulted in high serum PTH levels (0.71 +/- 0.34 ng/ml, P less than 0.01) in spite of marked elevations of serum 1,25(OH)2D concentrations in these animals. A significant negative correlation was noted between serum calcium and bioactive PTH. Calcium infusions into hypocalcemic, vitamin D-deficient rats caused a fall in serum bioactive PTH concentrations to a mean of 13% of control values within 10 min. Intraperitoneal administration of 1,25(OH)2D3 to hypocalcemic, 1,25(OH)2D-deficient rats did not suppress serum bioactive PTH concentrations after 30 or 60 min even though serum 1,25(OH)2D concentrations were greater than 900 pmol/liter in each animal at these time points. To our knowledge, this is the first study using PTH bioassays for physiological experiments in rats. PMID- 3840737 TI - Neuropeptide Y stimulates feeding but inhibits sexual behavior in rats. AB - The effects of neuropeptide Y (NPY), a tyrosine-rich peptide found in the rat brain, on feeding and sexual behavior were studied in male and female rats. Intraventricular (ivt) injections of NPY during the final hours of the light period induced feeding in a dose-related manner. While the lowest dose tested (0.02 nM) was without effect, higher doses (0.12, 0.47, 2.3 nM) uniformly elicited feeding with a latency of about 15 min in male rats. With the most effective dose, 0.47 nM, the increased food intake was due to an increased local eating rate. In contrast, the pattern of feeding behavior after a related peptide, rat pancreatic polypeptide (rPP), was quite different and less impressive. During the first hour, only one ivt dose of rPP (0.45 nM) evoked an increase in food intake, due to an increased time spent eating. Further, the effects of NPY on food intake were greater during the nocturnal period. Interestingly, increased food intake in nocturnal tests (4 h) was due solely to augmented intake during the first 60 min after ivt administration. In mating tests, initiated 2 h after the onset of darkness and 10 min after ivt administration of peptide, all but the lowest dose of NPY (0.01 nM) drastically suppressed ejaculatory behavior. Most rats treated with higher doses of NPY (0.02, 0.12, or 0.47 nM) mounted and intromitted only a few times before the cessation of sexual activity, and elongated latencies to the initial mount and intromission were observed. In contrast to the dramatic NPY-induced suppression of ejaculatory behavior, rPP (0.11 and 0.45 nM) was without effect on copulatory behavior. To substantiate further that the impairment of sexual behavior seen in NPY-treated rats was not due to an attenuated sexual ability, an additional experiment was performed. Penile reflexes, including erection, were monitored 10 min after ivt injection of NPY (0.12 nM), rPP (0.11 nM), or saline. No effect of NPY or rPP was observed on the proportion of rats showing erection or latency to initial erection, or in the number of erections per test. In fact, a slight facilitation of penile dorsiflexion responses was seen after NPY. These findings suggest that NPY selectively depresses sexual motivation in the male rat. In ovariectomized female rats responding to estrogen plus progesterone with a good level of sexual receptivity (lordosis quotient greater than 70), ivt saline and 0.01 nM NPY were without effect on sexual behavior.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3840738 TI - Release of catecholamines follows suckling or electrical stimulation of mammary nerve in lactating rats. AB - The hypothesis that catecholamines may be released by mammary gland stimulation during lactation was tested by measuring, with an HPLC electrochemical method, plasma epinephrine (E) and norepinephrine (NE) concentrations during suckling in conscious rats and during electrical stimulation (pulses: 1 msec duration, 10/sec at 5-30 V) of the central end of a cut abdominal mammary nerve in urethane anesthetized rats. Plasma E and NE concentrations were significantly elevated in two different strains of rats (Wistar and Holtzman) within 5 min of suckling. The concentration of E and NE did not change in control unsuckled rats during the same time period. As a complementary indication of sympathetic activation, it was observed that piloerection occurred during suckling. Plasma E levels (but not NE levels) increased significantly within 30 sec of a 2-min period of nerve stimulation in lactating rats on either day 7 or day 21 of lactation, as well as in nonlactating rats. The effect was significantly greater in nonlactating rats. The levels of E and NE were not altered after sham stimulation, whereas adrenalectomy abolished the rise in plasma E after mammary nerve stimulation. Blockade of the rise in plasma E also occurred after rapid injection of 100 microliters milk intraductally into each of two thoracic mammary glands, 15 sec before the onset of mammary nerve stimulation. These results show that E and NE can be released in response to suckling, and that activation of ductal mechanoreceptors may inhibit such release. These mechanisms may operate to regulate the rate of milk removal during suckling in the rat. PMID- 3840739 TI - Predicting toxicity through a computer automated structure evaluation program. AB - The computer automated structure evaluation program (CASE) has been extended to perform automatic quantitative structure-activity relationships (QSAR). Applications include the carcinogenicity of polycyclic aromatic hydrocarbons and of N-nitrosamines. Agreement with experiment is satisfactory. PMID- 3840740 TI - Endocrinological effects of intrathecal morphine. AB - This study was designed to evaluate the metabolic effects of intrathecal morphine in patients undergoing coronary artery surgery. Ten patients received 4 mg preservative-free morphine in 6 ml saline intrathecally before surgery and were compared with 10 patients anaesthetised in a similar manner, though without intrathecal morphine. Catecholamines, cortisol and glucose measurements were made during surgery and for 24 h post-operatively. The control group had a higher post operative requirement for papaveretum, indicating that intrathecal morphine provided some post-operative analgesia. In the period from end of surgery to 5 h after surgery, cortisol secretion was suppressed in the intrathecal morphine group. PMID- 3840741 TI - Magnetic resonance and CT imaging of diastematomyelia. AB - The clinical, MRI and CT features of diastematomyelia with an uncommon clinical course are reported. Possible pathogenetic aspects in the late onset of symptoms are discussed implying vascular factors. MRI provides direct visualization of the split cord and low conus, confirming that frontal images are preferable. PMID- 3840742 TI - Transplantation of human malignant and premalignant skin lesions of epidermis to nude mice. AB - Lesions of solar keratoses and squamous cell carcinoma maintained their histological appearance and an increased tritiated thymidine autoradiographic labelling index after being grafted on to nude mice. However, the values for their mean epidermal thickness and individual cell size appeared to decrease slightly during the 24-week period of study. As judged by the immunolocalization of involucrin antibodies, the grafts maintained a human epidermal antigenic profile. However, immunolocalization studies with HLA antibodies showed only a patchy positivity in the original premalignant lesions and were negative after grafting. These results indicate the potential value of the nude mouse as a model for studying the progress of premalignant and malignant skin lesions in an immunologically privileged non-human site and further indicate that solar keratoses can be maintained independently of systemic donor influences. PMID- 3840743 TI - Correlation between plasma levels of fenofibrate and lipoprotein changes in hyperlipidaemic patients. AB - Eleven hyperlipidaemic patients received two formulations of fenofibrate (differing in in vitro dissolution) in randomized sequence, each for 6 weeks. Formulation N, giving a 2-3-fold higher plasma fenofibrate level compared to R, lowered both the cholesterol and triglyceride levels far more than R. Changes in the total and high density lipoprotein cholesterol levels were not significantly correlated with the fenofibrate level. A highly significant correlation was detected for triglycerides in Type IV patients, and for changes both in very low density lipoprotein (VLDL) cholesterol and triglycerides in the entire group of patients. In conditions of widely distributed steady state levels of an absorbable hypolipidaemic drug, a significant correlation may thus be detected between the plasma level and the reduction of VLDL - associated lipids. PMID- 3840745 TI - Spectrophotometric determination of pirenzepine dihydrochloride using delta A method. PMID- 3840744 TI - Naturally occurring human "antigalactosyl" IgG antibodies are heterophile antibodies recognizing blood-group-related substances. AB - IgG autoantibodies in human serum bind selectively to a new antigen that appears on senescent erythrocytes, thereby initiating their removal from the circulation. We tested the hypothesis that these IgG molecules recognize terminal galactose residues, thought by some investigators to become exposed as cells age. Results revealed that human antibodies with an "antigalactosyl" specificity are heterophile antibodies directed against rabbit and not human red cells. This was demonstrated using hemagglutination assays and immunoblotting. Immunoblots performed with affinity purified antigalactosyl antibodies revealed binding of the antibodies to rabbit, but not human, erythrocyte membrane proteins. They have a broad range of specificities including anti-B, anti-I, and possibly anti-P1 and Pk. These heterophile antibodies are not involved in the physiological removal of senescent human RBC by macrophages as indicated by the data demonstrating that incubation of senescent red cells aged in situ with galactose prior to incubation with macrophages does not alter their phagocytosis. Senescent cell IgG does not have an antigalactosyl specificity because IgG eluted from senescent cells aged in situ does not bind to rabbit red cells that have exposed alpha-galactosyl moieties. PMID- 3840746 TI - Aqueous micellar systems in membrane protein crystallization. Partial miscibility of a nonionic surfactant in the presence of salt or polyethylene glycol. AB - The effects of NaCl and polyethylene glycol (PEG) 4000 on the lower consolution boundary (LCB) of a nonionic surfactant (C8E5) were studied and compared. Micellar systems were NaCl and PEG 4000 are present are often used in membrane protein crystallization. While sodium chloride shifts the surfactant LCB to lower temperatures without a significant change in the shape of the boundary, PEG produces a large solubility change strongly depending on the surfactant concentration. The salt effect is explained by a reduced interaction of the micellar oligooxyethylene chains with the water and the PEG effect by an unfavourable configurational interaction between the C8E5 micelles and PEG molecules. PMID- 3840747 TI - Effects of 1,25-dihydroxycholecalciferol administration on the rat renal vitamin K-dependent carboxylating system. AB - We have shown previously that the in vitro activity of the renal vitamin K dependent gamma-glutamyl carboxylase toward synthetic oligopeptide substrates is stimulated by administration of either parathyroid hormone (PTH) or 1,25 dihydroxycholecalciferol [1,25(OH)2D3] to rats [(1983) J. Biol. Chem. 258, 12783 12786]. Here we report that administration of 1,25(OH)2D3 to rats increases their levels of endogenous carboxylase substrate as well. Rats fed a vitamin D deficient diet had highly elevated serum PTH levels while vitamin D-replete animals had undetectable levels. Furthermore, since PTH increases 1,25(OH)2D3 levels by stimulating renal 25-hydroxyvitamin D-1 alpha-hydroxylase, it is very likely that the stimulatory effects of PTH on the renal vitamin K-dependent carboxylating system are mediated by 1,25(OH)2D3. PMID- 3840748 TI - Molecular forms of glucagon-like peptides in man. AB - Molecular forms of the glucagon-like peptides (GLP) encoded by the human preproglucagon gene were analysed by chromatography combined with specific radioimmunoassays to the synthetic peptides. Whereas extracts of human pancreas and a glucagonoma contained a large proglucagon cleavage product possessing both GLP-1 and GLP-2 immunoreactivities, extracts of human intestine contained products corresponding to free GLP-1 and a small amount of chromatographically distinct GLP-2 immunoreactivity. It is concluded that post-translational processing of proglucagon differs in pancreas and intestine, so that the C terminal portion of the molecule is cleaved to liberate free GLP-1 in the intestine. Further processing or degradation results in loss especially of GLP-2 immunoreactivity. PMID- 3840749 TI - Computer databases. PMID- 3840750 TI - Variation in the lack of polyadenylation of the rat milk protein mRNAs during the lactation cycle. AB - Translationally active milk protein mRNAs were found as nonpolyadenylated mRNAs in the rat mammary gland during pregnancy, lactation and involution. Analyses of whey protein mRNA and casein mRNA with the corresponding cDNAs showed that the lack of polyadenylation of these mRNAs at different time points of the lactation cycle is not consistent with the hypothesis that polyadenylation may be incomplete in the mammary gland when large amounts of mRNA are synthesized. The fraction of whey protein mRNA and casein mRNA that lacked polyadenylation was inversely proportional to the concentration of each sequence in the tissue during pregnancy, lactation and involution. A model is proposed to explain the finding that in each animal the ratio of casein mRNA to whey protein mRNA was similar in polyadenylated RNA and in nonpolyadenylated RNA at all stages of the lactation cycle. PMID- 3840751 TI - Mammary gland fatty acid synthetase messenger RNA. PMID- 3840752 TI - Specific binding of [3H]heparin to bovine granulosa cell membranes. AB - Bovine granulosa cell membranes from small (SFM) and large (LFM) antral follicles were incubated with [3H]heparin, a commercial radioactively labeled glycosaminoglycan (GAG). Binding was specific, reversible, saturable, and dependent on time, pH, ionic strength and divalent cations. SFM exhibited different [3H]heparin binding characteristics compared to LFM. The addition of a physiological concentration of calcium (2 mM) yielded significant differences (P less than 0.02) in [3H]heparin binding for SFM (87 590 +/- 4206 dpm/10(6) cells) compared to LFM (55 230 +/- 2816 dpm/10(6) cells). SFM and LFM showed maximum [3H]heparin binding at pH 6.5 and pH 5.5, respectively. Increasing the ionic strength by addition of 0.07-2.0 M NaCl interfered with binding. Addition of unlabeled heparin (0.1-100 micrograms/ml) displaced [3H]heparin bound to SFM and LFM in a dose-dependent manner, as did dextran sulfate, a non-GAG sulfated branched polysaccharide. Commercial chondroitin sulfate ABC displaced the bound [3H]heparin only at doses between 50 and 500 mg/ml. GAGs purified from FF suppressed binding 39% at a concentration of 5.9 mg/ml. Photomicrographs of fluorescein-labeled heparin bound to granulosa cells showed localized areas of heparin binding to the cell surface. These experiments demonstrated that the GAG heparin specifically bound to bovine granulosa cell membranes, and that significant differences existed between the binding characteristics of SFM and LFM. PMID- 3840753 TI - The contribution of fetal-newborn complications to motor and cognitive deficits. AB - A total of 364 selected high-risk premature and mature infants were studied prospectively to assess the relationship between fetal-newborn complications and motor and cognitive deficits identified during the first year of life. Deficits occurred in 24 per cent of the children: 14 per cent had one or more major deficit and the other 10 per cent had one or more minor deficit. Prematurity was one of the fetal-newborn complications not associated with deficits at one year. Complications that were associated with deficits included fetal hypoxia, respiratory difficulties, infection and newborn encephalopathy. There was also a significant association between fetal hypoxia, newborn respiratory complications, infection and newborn encephalopathy, which is in keeping with the concept that the first three may be mechanisms in CNS injury and subsequent deficits, while newborn encephalopathy reflects the injury and is an important predictor of such deficits. PMID- 3840754 TI - Predictors for survival and normal neurodevelopmental outcome of infants weighing less than 1001 grams at birth. AB - Between 1979 and 1981, 67 infants weighing 1000 g or less at birth were admitted to the Hammersmith Hospital Neonatal Intensive Care Unit. 29 survived the neonatal period. Low acidosis score, without a metabolic component, was the most powerful predictor of survival. Other factors were gestational age, five-minute Apgar score, the need for ventilatory support, hypoxia, hypercapnia, pneumothorax, hypotension and the presence of a larger PVH. Of the 24 survivors followed up to three years of age, 11 were optimal, nine had some neurodevelopmental deficits and three had moderate functional handicap. Only one child has cerebral palsy and global mental retardation. Five-minute Apgar score and the presence of PDA correlated with normal outcome. None of the 20 obstetrical factors examined appeared to influence either survival or neurological outcome. PMID- 3840755 TI - Effect of pirenzepine and atropine on peptone meal-stimulated gastric secretion and plasma gastrin in healthy volunteers, patients with duodenal ulcer and vagotomized patients. AB - The aim of this study was to compare the effects of atropine with those of placebo and pirenzepine on food-induced gastrin release, and gastric and acid secretion. Three groups of subjects were studied: 8 healthy volunteers; 8 duodenal ulcer patients, and 6 vagotomized patients. Gastric acid secretion and serum gastrin were studied in each subject on 3 different days, after placebo, atropine or pirenzepine, given in random order. In each group, acid secretion was significantly depressed by atropine and pirenzepine. Unlike pirenzepine, atropine induced a significantly increase in serum gastrin in both healthy volunteers and duodenal ulcer patients. None of the treatments caused differences in gastrin response in vagotomized patients. PMID- 3840756 TI - Experimental T-2 toxicosis in swine. I. Changes in cardiac output, aortic mean pressure, catecholamines, 6-keto-PGF1 alpha, thromboxane B2, and acid-base parameters. AB - T-2 toxin given as a single intravascular dose to swine produced a shock syndrome. Dosages of 0.6 or 4.8 mg/kg were administered to different groups of swine. Shock was characterized by reductions in cardiac output and blood pressure, and increased plasma concentrations of epinephrine, norepinephrine, thromboxane B2, 6-keto PGF1 alpha, and lactate. Total peripheral resistance was unchanged in the high-dose group but decreased in the low-dose group. Pulmonary vascular resistance increased in both groups. Decreases occurred in arterial pH and arterial oxygen partial pressure. No alterations occurred in plasma concentrations of histamine or serotonin. PMID- 3840757 TI - [Collagenous colitis, IgA deficiency, Basedow's disease and atrophic gastritis]. AB - In a 37-year-old woman with chronic watery diarrhea of three years duration, the diagnostic of collagenous colitis was established by optical and ultrastructural examination of rectal and colonic biopsies. No other cause of diarrhea could be found. Moreover, this patient had also selective IgA deficiency, Grave's disease and chronic atrophic gastritis of auto-immune type. Sequential treatments with loperamide, cholestyramine and antibiotics did not modified diarrhea which improved with salazosulfapyridine and betamethasone enemas. These observations suggest that collagenous colitis might be a part of the spectrum of enteropathies associated with immunoglobulin deficiencies. PMID- 3840759 TI - A comparison of chromatin degradation in irradiated normal and tumorous lymphoid cells. AB - Irradiation of mice with doses of 2 and 4 Gy induced extensive chromatin degradation in the thymocytes within 6 hours accompanied by an increase in polydeoxynucleotide (PDN) content (36 and 42 times, respectively). Fifteen hours after irradiation the PDN level was considerably lower, however, still being 4.7 and 14 times the control values after doses of 2 and 4 Gy. The PDN content in control LS/BL lymphosarcoma cells was similar as that in the thymocytes of non irradiated mice. Unlike in the thymocytes, irradiation of lymphosarcoma cells did induce no statistically significant increase in the PDN level 6 and 15 hours after the irradiation, respectively. It has been reported previously (Matyasova et al. 1973) that chromatin of LS/BL cells degraded similarly as that in the irradiated thymocytes. The results of the present experiments thus provide additional evidence for changes of LS/BL cell properties due to long term cultivation. These cells, however, are still able to react by chromatin fragmentation to nitrogen mustard treatment. PMID- 3840758 TI - [The main stages in the complex treatment of children with lymphogranulomatosis (Hodgkin's disease)]. PMID- 3840760 TI - [Effect of a live tularemia vaccine on chemical mutagenesis in white rats]. AB - The influence of immunization with tularemic live dry vaccine applied singularly to Wistar rats skin on mutagenicity induced by cyclophosphamide, methylnitrosourea, benzo (a) pyrene, chloroprene and tetrachlorbutane was studied. The chemical compounds indicated were injected intraperitoneally at doses equal to one fifth of LD50 in 15 days after vaccination. The same doses of these chemicals were applied to intact rats (controls). Metaphase plates were prepared from rat bone marrows by known methods, 9600 metaphase cells were studied in total. The analysis showed that cytogenetic disturbances in immunized animals were significantly decreased (from 1.5 to 2.6 times), as compared to nonimmunized animals. The possible mechanisms of reducing the quantity of cytogenetic disorders in myelokaryocytes of immunized rats are discussed in this paper. The results obtained may be both of scientific and practical significance. PMID- 3840761 TI - Properties of rat and mouse beta-glucuronidase mRNA and cDNA, including evidence for sequence polymorphism and genetic regulation of mRNA levels. AB - cDNA clones containing partial sequences for beta-glucuronidase (beta G) were constructed from rat preputial gland RNA and identified by their ability to selectively hybridize beta G mRNA. One such rat clone was used to isolate several cross-hybridizing clones from a mouse-cDNA library prepared from kidney RNA from androgen-treated animals. Together, the set of mouse clones spans about 2.0 kb of the 2.6-kb beta G mRNA. Using these cDNA clones as probes, a genomic polymorphism for DNA restriction fragment size was found that proved to be genetically linked to the beta G gene complex. A fragment of beta G cDNA was subcloned into a vector carrying an SP6 polymerase promoter to provide a template for the in vitro synthesis of single-stranded RNA complementary to beta G mRNA. This provided an extremely sensitive probe for the assay of beta G mRNA sequences. Using either nick-translated cDNA or transcribed RNA as a hybridization probe, we found that mouse beta G RNA levels are strongly induced by testosterone, and that induction by testosterone is pituitary-dependent. During the lag period preceding induction, during the induction period itself, and during deinduction following removal of testosterone, beta G mRNA levels paralleled rates of beta G synthesis previously measured by in vivo pulse-labelling experiments. Genetic variation in the extent of induction affected either the level of beta G mRNA or its efficiency of translation depending on the strain of mice tested. PMID- 3840762 TI - Isolation of full-length cDNAs encoding abundant adult human skeletal muscle mRNAs. AB - We have used a method [Gunning et al., Mol. Cell. Biol. 3 (1983) 787-795] of cDNA clone isolation from a cDNA library that selects for clones corresponding to abundant mRNAs and simultaneously yields a large number of different cDNA clones containing a high fraction of nearly full-length inserts. We screened an adult human skeletal muscle (skm) cDNA library and have isolated 46 cDNA clones which correspond to different mRNAs expressed at significant levels in adult skm. Of these cDNA clones 17 appear to be muscle-specific. Eleven are expressed in both cardiac muscle and skm but six are expressed primarily in skm. The remainder are expressed in muscle as well as in human fibroblasts. Comparison of cDNA insert size with mRNA size for the 17 clones expressed only in skeletal plus cardiac muscle revealed that eight are full-length, five are not and four recognize multiple transcripts which prevent a definitive conclusion. These cDNA clones will greatly facilitate the characterization of genes which are regulated during human muscle development. PMID- 3840763 TI - Molecular cloning and sequencing of H-2Kk cDNA: comparison with other H-2 genes and evidence for alternative splicing. AB - A cDNA library was constructed from mouse L cells that were transfected with a human HLA-B7 gene fragment lacking the 5'-segment of exon 2 and all upstream sequences. A cDNA clone (pESP-C103) which is of mouse origin was detected by hybridization with the HLA-B7 gene. Comparison of the amino acid (aa) sequence predicted from the nucleotide sequence of the cDNA and the partial aa sequence of the H-2Kk antigen suggests that this cDNA (pESP-C103) codes for the H-2Kk antigen. This cDNA clone extends to the middle of the leader sequence. Comparison of the nucleotide and deduced aa sequences with those of other H-2 genes revealed an alternative splicing in exon 8 in the case of the H-2Kk gene. PMID- 3840764 TI - Dysdifferentiative nature of aging: passage number dependency of globin gene expression in normal human diploid cells grown in tissue culture. AB - Aging may be a result of cells drifting away from their proper state of differentiation. This process has been called dysdifferentiation. Normal diploid cells grown in tissue culture conditions undergo numerous biochemical and morphological changes and have a finite division potential. These changes could be a result of such a dysdifferentiation process. Changes in the differentiated state of a cell are frequently manifested by the expression of genes that are normally repressed. Previous studies have shown about a two-fold age-dependent increase of alpha and beta globin-like RNA in mouse brain and liver tissues. Therefore, the possible presence and increase of globin RNA was investigated in the nonerythroid human diploid strain WI-38 grown in tissue culture as a function of population doublings. A DNA X RNA hybridization technique using specific complementary DNA (cDNA) to alpha and beta human globin was used to detect possible complementary RNA sequences in total cellular RNA preparations extracted from cells at population doublings of 26.4 and 46. No globin-like RNA sequences could be detected above background noise levels for either of these two passage numbers. Thus, the globin RNA genes appear to be highly repressed and this degree of repression maintained as the culture approaches its characteristic population doubling limit. PMID- 3840766 TI - Effects of BM 15.766 on serum lipids in rats. PMID- 3840765 TI - Biliary excretion of radioactivity after intravenous administration of 3H-1,25 dihydroxyvitamin D3 in man. AB - Biliary radioactivity excretion was studied in 10 patients with postcholecystectomy T-tube drainage after intravenous administration of 3H-1,25 dihydroxyvitamin D3. The mean +/- SD radioactivity excreted in T-tube bile expressed as a percentage of the administered dose was 18.9 +/- 10.7% per 24 hours. After correction for incomplete bile collection the value obtained was 28.8 +/- 12.8%. The mean chloroform solubility of the biliary radioactivity increased from 17.0 +/- 8.4% to 69.4 +/- 15.1% after incubation with beta glucuronidase. High performance liquid chromatography of chloroform extracts of bile revealed that most of the eluted radioactivity was more polar than 1,25(OH)2D3. The percentage radioactivity eluting as 3H-1,25(OH)2D3 increased from approximately 2.4 +/- 1.9 to 16.2 +/- 8.0 after incubation with beta glucuronidase. We conclude that significant amounts of intravenously administered 3H-1,25(OH)2D3 are excreted in bile, mostly as more polar metabolites. The increase in free 3H-1,25(OH)2D3 after incubation with beta-glucuronidase indicates that glucuronides of 1,25(OH)2D3 are present in bile. PMID- 3840767 TI - Dermatofibrosarcoma protuberans: a clinicopathological and immunohistochemical study with a review of the literature. AB - Forty-one cases of dermatofibrosarcoma protuberans are presented. The clinical features and histopathological appearances are described. Immunohistochemical staining of thirteen cases with antisera to lysozyme, alpha 1-antichymotrypsin and S-100 protein has provided no evidence to support either a histiocytic or neuroectodermal origin for these tumours. In reviewing the literature, the histogenetic origin, differential diagnosis and malignant potential of dermatofibrosarcoma protuberans are discussed. PMID- 3840769 TI - Computer-assisted planimetry. PMID- 3840768 TI - Primary choriocarcinoma of the lung. AB - Choriocarcinoma was found in the lung of a 34-year-old woman. Examination of the patient's entire body, especially the genital tract, failed to disclose foci of choriocarcinoma other than that in the right lung. After surgery, the levels of human chorionic gonadotropin in the blood and the urine fell. It was concluded that the choriocarcinoma of the lung was, in fact, the primary tumor. The genesis of choriocarcinoma was also studied in ten patients who died after delivery or abortion. Autopsy disclosed trophoblasts in the pulmonary arteries in nine of these ten patients. These findings suggest that primary choriocarcinoma in women is due to pulmonary embolism caused by trophoblasts at the time of abortion or delivery. PMID- 3840770 TI - A comparison of moving dipole inverse solutions using EEG's and MEG's. PMID- 3840771 TI - GAITSPERT: an expert system for the evaluation of abnormal human locomotion arising from stroke. PMID- 3840772 TI - Lymphoid procoagulant response to bacterial endotoxin in the rat. AB - A number of species respond to bacterial endotoxin (lipopolysaccharide [LPS]) wherein cells of the monocyte-macrophage lineage are rapidly induced either directly or via T-cell collaboration to initiate the extrinsic coagulation protease pathway. This results in fibrin formation and deposition as well as consumption of plasma coagulation proteins. It has been claimed that this cellular response, basic to the Shwartzman reaction, is lacking in rats and may account for the more limited severity of the Shwartzman reaction in this species. We examined the in vitro lymphoid procoagulant response in Fischer 344, Brown Norway, and Lewis rats. When peripheral blood mononuclear cells (PBM) were stimulated in vitro with LPS, a procoagulant activity (PCA) response was observed when assayed by acceleration of clotting of recalcified human or rat platelet poor plasma. The response was rapid, with a maximum achieved at 4 h. PCA was not physically dissociated from viable PBM by 5 mM EDTA, which is consistent with the presence of an intrinsic plasma membrane initiator molecule rather than calcium bound gamma-carboxylated glutamic acid-containing proteases. The induction of monocyte PCA was prevented by incubation of cells with cycloheximide or actinomycin D, implicating a new biosynthetic requirement. Cultivation of PBM with warfarin did not diminish the function of the effector PCA, nor did vitamin K augment the function of the endotoxin-induced PCA, indicating that the functional activity was not attributable to gamma-carboxylated glutamic acid containing proteins. No inhibition of the cellular PCA molecule was produced by serine protease inhibitors. The LPS-induced PCA appeared to involve a tissue factor-like molecule since both factors X and VII were required in mediating PCA. Isolation of monocytes and T lymphocytes from LPS-stimulated PBM demonstrated that PCA was present in the monocyte-rich fraction. When isolated rat T lymphocytes and monocytes were separately exposed to LPS, PCA was not induced. In contrast, when the cells were combined, LPS induced PCA, indicating that the PCA response involved cellular collaboration between cells present in T lymphocyte and monocyte populations. PMID- 3840773 TI - Road traffic noise annoyance in Amsterdam. AB - 3445 persons living in Amsterdam (1507 male and 1938 female), aged 41-43 years, participated in an investigation in which the relationship was studied between the (measured) road traffic noise in front of the houses in which the participants lived, and the (reported) resulting annoyance and sleep disturbance. We found a smaller number of persons with annoyance and sleep disturbance than we had expected as a result of other investigations. Considerable differences in the annoyance experience were found for different categories of noise-sensitivity. Furthermore, a negative appreciation of other environmental noises and of the living environment increased the prevalence of traffic noise annoyance. Noise sensitivity and this appreciation are mutually dependent: noise-sensitive people have a greater risk of being annoyed by other sounds (aeroplanes, neighbours, work) as well, and they have less appreciation of their living environment. Noise sensitivity appears to be more strongly represented amongst persons with a higher socio-economic status. In favour of the point of view that an important contribution to annoyance is of nonacoustic character, is the finding that both annoyance and sleep disturbance are greater amongst people who keep their windows closed at the exposed side of their home. PMID- 3840774 TI - Adipoblasts from the Zucker fafa rat. AB - In vitro experiments using both primary fetal hepatocyle cultures and adipoblast cultures have demonstrated that the presence of the fa gene is associated with decreased synthetic capacity, when compared to wild-type cultures. These results are in contrast to the elevated lipogensis and lipoprotein-lipase activities found in vivo in young adult obses (fafa) Zucker rats compared to their lean littermates. These studies used adipoblast cultures to address three possible explanations for these in vitro-in vivo differences: 1) FaFa and fafa adipoblast cultures represent different cell populations with intrinsically different abilities to differentiate, ie, to lipid-fill. 2) The decreased synthetic capacities in fafa vs FaFa adipoblast cultures are specific to cultures derived from the epididymal pad. 3) Cultured adipoblasts produce factor(s) that affect adipoblast differentiation in vitro. Results indicate that 1) the rate of differentiation is slower in fafa than in FaFa adipoblasts 2) there are depot related differences in lipid metabolism, but these differences do not negate the in vitro association between the fa gene and decreased synthetic capacity and 3) FaFa epididymal-derived adipoblasts produce a factor(s) that affects inguinal derived adipoblast differentiation and/or growth in vitro. Thus it is important to take both the site of cell origin and culture conditions into consideration when using in vitro systems as an approach to understanding complex in vivo disorders, such as obesity in the Zucker fafa rat. PMID- 3840775 TI - The effect of brown fat removal on the development of obesity in Zucker and Osborne-Mendel rats. AB - Removal of significant amounts of brown fat in young Zucker rats maintained at room temperature triggered compensatory changes in the remaining brown fat depots. These changes, which occurred to a greater extent in the lean than in the obese rats, enhanced the thermogenic potential of the remaining depots, thus possibly accounting for the lack of increased adiposity in these lipectomized rats. When the Zucker rats were maintained in the cold, rather than at room temperature, their ability to compensate for removal of the scapular brown fat was compromised, particularly in the obese animals. Under such conditions, the amount of functional brown fat was significantly reduced, and the amount of body fat elevated. In the lipectomized Zucker rats, this increase in adiposity was accompanied by increased body mass. In contrast, in the cold-exposed Osborne Mendel rats, where lipectomy was not accompanied by compensatory increases in the mass and cellularity of the remaining brown fat depots, increased body fat occurred in the absence of any increase in food intake or in total body mass. PMID- 3840776 TI - Direct non-insect-vector transmission of Leishmania parasites in mice. PMID- 3840777 TI - Interaction of dipalmitoyl-phosphatidylcholine with calf thymus histone H1. AB - The interaction between dipalmitoyl-phosphatidylcholine and calf thymus histone H1 has been studied. A protein-phospholipid complex, resulting from this interaction, has been isolated by centrifugation in a sucrose gradient. The phospholipid-histone interaction causes an increase in the alpha-helix content of the protein; the corresponding conformational transition is observed by CD studies in the far-u.v. region. The only tyrosine residue of the protein can be advantageously used as an intrinsic fluorescent probe; thus, fluorescence spectra indicate that protein folding induced by phospholipids is concomitant with the tyrosine transfer into a more hydrophobic environment. The trypsin-resistant core of the histone is also folded in the presence of the phospholipid but the conformational transition occurs at lower lipid concentration than for the intact protein. Fluorescence polarization of 1,6-diphenyl-1,3,5-hexatriene indicates that the protein shifts the transition temperature of the phospholipid from 41.5 to 44.0 degrees. Secondary structure prediction of the trypsin-resistant core of the histone indicates the existence of an amphipathic helix that could be responsible for the lipid-protein interaction. PMID- 3840778 TI - Flow determination using computed tomography: application to aortic dissection. Part I. AB - The CT method of flow determination evaluated in this study was based on the application of contrast enhancement dynamics. In order to characterize flow, such parameters as mean transit time, rise time, peak CT value, curve width and variance, and others were derived from the venoarterial indicator dilution curves using a perfect mixers-in-series model of curve fitting analysis and a bolus injection of contrast medium. The technique was first validated in a steady state phantom model that simulated in vivo conditions of right-sided mixing closely by the introduction of a number of mixers. A series of flows through small tubes was measured. Good correlation was obtained (r = .85). For a fixed number of mixers, the central second moment of the primary peak of the indicator dilution curve or variance decreased with increasing flow and peak CT value increased. Applied to the clinical situation, this method would allow characterization of blood flow using an intravenous bolus of contrast. PMID- 3840779 TI - Inhibition of the vascular actions of IgG aggregates by BN 52021, a highly specific antagonist of paf-acether. AB - The effect of BN 52021, a selective antagonist of paf-acether (Braquet GB patent 8, 418, 424 July 19, 1984), was studied in normotensive rats challenged with different doses of paf-acether. Sudden death was observed in animals receiving an i.v. dose of 10 micrograms/kg of paf-acether and this was prevented by prior treatment with BN 52021 (5 mg/kg, i.v.). Animals receiving 2.5 micrograms/kg of paf-acether had a fall of mean arterial pressure of 92.5 +/- 4.7 mmHg which recovered to the prechallenge level 20.5 +/- 0.2 min thereafter. Previous treatment with BN 52021 (5 mg/kg, i.v.) reduced the mean arterial pressure fall to 47 +/- 0.9 mmHg and the time of recovery to 5.7 +/- 1.7 min. The extravasation of 125I-bovine serum albumin under the above conditions was reduced by BN 52021 from 36 +/- 3 to 18 +/- 3%. A lower dose of BN 52021 (1 mg/kg, i.v.) was also effective in reducing later extravasation, but was unable to prevent the extravasation which appears up to 10 min after the injection of paf-acether. To extend these findings to a model of endogenous production of paf-acether, other animals were challenged with soluble aggregates of human IgG (40 mg/kg, i.v.; Inarrea et al., Immunopharmacology 6:7, 1983).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840780 TI - On parallel tracts: protecting human subjects and animals. PMID- 3840781 TI - [Zinsser-Engman-Cole syndrome (dyskeratosis congenita)]. AB - A 41-year-old man with skin lesions typical of Dyskeratosis congenita had lost a great deal of weight in a relatively short time. Intensive examination of the internal organs indicated that some changes had taken place that were typical of the dermatological diagnosis, but so far clinical examination has not found a neoplasm or other severe internal diseases. PMID- 3840782 TI - Why D.O. family physicians hesitate to refer to D.O. specialists. PMID- 3840783 TI - The impact of senior clinical clerkships on choosing a rural practice location. PMID- 3840784 TI - The cochlear implant: a new approach in the treatment of the profoundly deaf. PMID- 3840785 TI - Developments in residency programs for the osteopathic profession. PMID- 3840786 TI - Supervoltage radiotherapy for Graves' ophthalmopathy: CCABC technique and results. AB - A treatment technique employing retrobulbar supervoltage radiotherapy (XRT) in Graves' ophthalmopathy is described. Twenty-eight patients have been treated and followed between 1980-1983. Twenty-six of 28 patients (93%) showed some response, with 19/28 (68%) having a good to excellent response. Four of 28 (14%) had recurrent symptoms post-XRT. Soft tissue signs and symptoms were relieved and disease progression arrested in the majority of patients, but proptosis and ophthalmoplegia responded poorly. High dose corticosteroids have generally been the alternative form of therapy for this disease. Post-XRT, 24/28 (86%) of patients have had no further steroid requirements, and been spared the associated complications. Treatment was well tolerated, with only five patients (18%) demonstrating a transient worsening of symptoms which settled entirely within 2 weeks. No long-term complications have been encountered. Eleven patients had post XRT CT scans which were compared to pre-treatment scans and clinical response. Nine of 11 patients (82%) had CT changes in general agreement with the observed clinical response, but the degree of involvement seen on the initial CT scan was not predictive of response nor the risk of relapse. XRT with the described technique is felt to be an effective, safe, and practical approach to the disabling and disfiguring complications of severe Graves' ophthalmopathy. PMID- 3840787 TI - The use of ultrasonography for pregnancy diagnosis in the bitch. AB - Twenty-three Greyhound bitches housed at 3 breeding kennels were examined for pregnancy via transabdominal palpation and ultrasonography. Pregnancy was timed from the calculated day of ovulation (day of ovulation = day when first pup was whelped--63), and from a single breeding date (day 0). Starting on day 10 after ovulation, 9 bitches were monitored every 3 days by ultrasonography only, to determine gestational vesicle sizes during gestation and the time when fetal movements and heartbeats could be first detected. The other 14 bitches were examined by ultrasonography and transabdominal palpation on the same day every week, starting on postovulation day 19, to compare the effectiveness of the 2 methods of pregnancy determination. Parturition was the final determinant of pregnancy status. The earliest correct diagnosis of pregnancy was at 18 days after ovulation, but fetal movements and heartbeat could not be identified until days 28 and 35, respectively. Estimation of fetal numbers by ultrasound or palpation was not reliable when there were more than four in the litter. Pregnancy and nonpregnancy were correctly determined by both methods in an increasingly greater number of bitches as gestation progressed, but ultrasonography was more accurate at all stages; on days 19 to 22, 26 to 30, 34 to 38, and greater than 40 after ovulation, correct diagnoses were made in 33%, 42%, 50%, and 75% of the bitches by palpation and in 42%, 67%, 75%, and 83% of the bitches by ultrasonography. The most common error was failure to detect pregnancy by palpation or ultrasonography in bitches with small litters and tense abdominal muscles.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840788 TI - Cell kinetics of growth cartilage of achondroplastic (cn) mice. AB - Mice homozygous for the recessive gene achondroplasia (cn) aged 16 and 17 days and some homozygotes aged 22-34 days have disruptions in the growth of the proximal tibial growth plate which are due solely to reduced hypertrophic cell height. A second class of homozygote, distinguishable at 22 days, has a greater disruption due to much reduced hypertrophic cell height, reduced labelling index and reduction of the number of cells in the effective proliferative zone. PMID- 3840789 TI - Metabolic products of microorganisms. 225. Elloramycin, a new anthracycline-like antibiotic from Streptomyces olivaceus. Isolation, characterization, structure and biological properties. AB - Elloramycin (1), a new antibiotic produced by Streptomyces olivaceus strain Tu 2353, was detected by chemical screening. The dark yellow compound, molecular formula C32H36O15, is weakly active against a variety of Gram-positive bacteria, especially streptomycetes and against stem cells of L-1210 leukemia. Acidic hydrolysis of the antibiotic liberated elloramycinone (3) as aglycone and 2,3,4 tri-O-methyl-L-rhamnose, which was identified as methyl glycoside 5b. The structure of elloramycin was established by comparison of the spectra (UV, 1H NMR, 13C NMR) with those of the known tetracenomycin C (2), 3 and the fact that 2 and 3 gave the same tetramethyl ether after permethylation. Elloramycin is an anthracycline-like antibiotic, the aglycone resembles tetracenomycin C, the sugar is connected in a phenolic alpha-glycosidic linkage. PMID- 3840790 TI - Luminamicin, a new antibiotic. Production, isolation and physico-chemical and biological properties. AB - A new antibiotic, luminamicin, was isolated from the culture broth of an actinomycete strain OMR-59. It exhibits antibacterial activity against anaerobic bacteria, especially against Clostridium sp. The molecular formula of the antibiotic was determined as C32H38O12 on the basis of high resolution mass spectrum, elemental analysis and NMR spectrum. PMID- 3840791 TI - Lactoquinomycin, a novel anticancer antibiotic. I. Taxonomy, isolation and biological activity. AB - Lactoquinomycin, a novel basic antibiotic, was isolated from the culture broth of a soil streptomyces by repeated solvent extraction and adsorption column chromatography. Morphological, cultural and physiological studies revealed that the organism belongs to the species Streptomyces tanashiensis. The antibiotic was active against bacteria, particularly Gram-positive organisms, and neoplastic cells in vitro. Antibiotic-resistant cell sublines of L5178Y lymphoblastoma were more significantly inhibited by lactoquinomycin than the parental cell line. Lactoquinomycin was effective against Ehrlich carcinoma in mice. PMID- 3840792 TI - Lactoquinomycin, a novel anticancer antibiotic. II. Physico-chemical properties and structure assignment. AB - Lactoquinomycin, a new antibiotic, C24H27NO8, mp 151 approximately 159 degrees C (dec), FAB-MS: m/z 458 (MH+), is a basic substance, showing UV lambda MeOHmax (epsilon) 215 (37,600), 254 (10,700) and 432 nm (4,760), and IR nu CHCl3max 1790 (gamma-lactone), 1665 and 1650 (quinone) cm-1. The structure of lactoquinomycin has been elucidated by 1H NMR and ORD in comparison with those of kalafungin. PMID- 3840794 TI - Studies on the ionophorous antibiotics. XXVIII. Moyukamycin, a new glycosylated polyether antibiotic. PMID- 3840793 TI - Potent antitumor antibiotic complex: PD 114,759, PD 115,028, PD 119,707, and PD 119,193. AB - Four novel antitumor antibiotics (PD 114,759, PD 115,028, PD 119,707 and PD 119,193) are produced as a complex by a new species of Actinomadura. The proposed name for the culture is Actinomadura verrucosospora subsp. veractimyces ATCC 39363. The antibiotics are extremely bioactive, with MIC values of less than 0.006 ng/ml against several bacteria and ID50 values of 0.003 approximately 0.107 ng/ml against L1210 leukemia cells in vitro. Antitumor activities vs. P388 leukemia in vivo were observed at doses of 0.313, 0.40, and 0.5 micrograms/kg (daily X 5) for PD 119,707, PD 115,028, and PD 114,759, respectively. PMID- 3840795 TI - A new antitumor antibiotic, guanine 7-N-oxide produced by Streptomyces sp. PMID- 3840796 TI - Saquayamycins, new aquayamycin-group antibiotics. AB - From the culture broth of Streptomyces nodosus MH190-16F3, four new antibiotics have been isolated, and named saquayamycins A, B, C and D. The compounds are glycosides of aquayamycin, and among aquayamycin-group antibiotics they are most closely related to P-1894B (vineomycin A1). All saquayamycins act on Gram positive bacteria and inhibit the growth of adriamycin-sensitive and adriamycin resistant P388 leukemia cells. PMID- 3840797 TI - Structure activity relationships of synthetic antibiotic analogues of chryscandin. AB - Anti-yeast activity with a series of chryscandin derivatives showed that the O methyl-L-tyrosyl moiety is not always required for activity at the target site. On the other hand, the adenyl-3'-aminoribofuranuronic acid moiety seems to be essential for biological activity. Therefore, the various acyl derivatives on the amino group of the sugar part of the nucleoside were synthesized. 1-(6-Amino-9H purin-9-yl)-3-(S-benzyl-L-cysteinylamino)- 1,3-dideoxy-beta-D-ribofuranuronic acid (16) showed the highest efficacy among them against Candida albicans. It exhibited sixteen-fold enhanced activity in vitro compared with that of native chryscandin. The in vivo activity of 16 against experimental infection of C. albicans showed the almost same as that of 5-fluorocytosine and a superior to that of ketoconazole. PMID- 3840798 TI - Structure of awamycin, a novel antitumor ansamycin antibiotic. PMID- 3840799 TI - In-vitro activity of BMY 28142, a new aminothiazolyl cephalosporin. AB - The in-vitro activity of BMY 28142, a new alpha-methoxyimino aminothiazolyl cephalosporin, was determined by microdilution broth techniques. The agent demonstrated excellent activity against recent clinical Enterobacteriaceae isolates with a 90% minimum inhibitory concentration (MIC90) of 0.25 mg/l or less for all but one species tested. BMY 28142 inhibited all Pseudomonas aeruginosa strains tested (MIC90 = 8.0 mg/l) as well as most other non-fermentative bacteria studied. Methicillin-susceptible Staphylococcus aureus were susceptible to BMY 28142 with MIC90 = 4.0 mg/l, while methicillin-resistant strains were generally resistant (MIC range 8- greater than 32 mg/l). PMID- 3840800 TI - Pulmonary physiological and surfactant changes during injury and recovery from hyperoxia. AB - The time course of lung injury and recovery from a sublethal exposure to 100% O2 was investigated in adult rabbits. Animals were exposed to 100% O2 for 64 h and then returned to room air for varying periods of time up to 200 h. By the end of the exposure period, the alveolar permeability to solute increased significantly, and biochemical analyses of bronchoalveolar lavages showed a 30% decline in phospholipid content and a threefold increase in protein levels. However, other parameters such as wet-to-dry lung weight ratios, blood gas values, and pressure volume mechanics were not significantly different from control levels after 64 h of hyperoxia. Twenty-four hours postexposure, alveolar phospholipid levels had declined even further (51% of control), and mean protein levels in lavage increased to eight times control values. These lavages exhibited severely impaired dynamic surface activity at 37 degrees C and 100% humidity in an oscillating bubble apparatus. In addition, total lung capacity, lung compliance, and arterial O2 partial pressure declined greatly at this time. Between 12 and 48 h postexposure, animal mortality was 35%; the remaining animals survived, and physiological parameters returned to normal by 200 h postexposure. Bronchoalveolar lavages from the recovered animals contained protein levels equal to those of controls and phospholipid levels approximately twice those in control lavages. Lavage surface activity also returned to normal by the 200 h postexposure time point. PMID- 3840801 TI - Effects of high-frequency and conventional ventilation on the premature lamb lung. AB - Twelve sets of twin lambs were delivered prematurely by cesarean section at 133 136 days gestational age and ventilated for 3 h with either high-frequency oscillation (HFO) or conventional mechanical ventilation (CMV). Blood gases and pH values were monitored at 30-min intervals, and ventilator settings were adjusted to maintain CO2 partial pressure (PCO2) values within the normal range. There were no differences in the sequential blood gas or pH values between the HFO or CMV lambs. Mean airway pressures (MAP) between 8.0 and 20.4 cmH2O were required, indicating lung disease of variable severity in the lambs. The bidirectional protein leak from the vascular space to the airways and alveoli and vice versa was measured with radiolabeled albumins given by intravascular injection and with fetal lung fluid at birth. The albumin leaks in both directions increased as MAP required to normalize PCO2 increased, but the degree of leak was independent of type of ventilation. Pathological findings of epithelial necrosis and hyaline membranes occurred to a similar extent in lung sections from both groups of lambs. In the HFO animals less phosphatidylcholine in the alveolar wash and more of a tracer dose of radiolabeled natural surfactant that had been given at birth became tissue associated. These results indicate a decrease in the initial secretion of surfactant and/or a stimulation of reuptake in the HFO animals. HFO did not protect the immature lung from the development of large protein leaks or the pathological changes of the respiratory distress syndrome. PMID- 3840802 TI - Phosphorylation of regulatory light chain a (RLC-a) in smooth muscle myosin of scallop, Patinopecten yessoensis. AB - One of the two regulatory light chains, RLC-a, of scallop smooth muscle myosin was fully phosphorylated by myosin light chain kinase of chicken gizzard muscle. The residue phosphorylated was Ser. It may be the Ser at number 11 from the N terminal. The sequence of 9 residues around the Ser-11, QRATSNVFA, is identical with that around the phosphorylatable Ser of LC20 of chicken gizzard myosin. RLC a was also phosphorylated slowly by cAMP-dependent protein kinase. The phosphorylation of RLC-a may be involved in the regulatory system for the catch contraction of scallop muscle. PMID- 3840803 TI - The primary structure of the precursor of chicken mitochondrial aspartate aminotransferase. Cloning and sequence analysis of cDNA. AB - The mitochondrial isoenzyme of aspartate amino-transferase (mAspAT; subunit Mr 45,000) is synthesized on free polysomes in the cytosol as a precursor of higher Mr (pre-mAspAT; Sonderegger, P., Jaussi, R., Christen, P., and Gehring, H. (1982) J. Biol. Chem. 257, 3339-3345). We have isolated three overlapping cDNA clones that correspond almost to the full length of pre-mAspAT mRNA with 100 nucleotides at the 5' end missing. The mRNA is 2.1 kilobase pairs long and has a 3' noncoding region of 0.7 kilobase pairs. The cDNAs code for the 401 amino acid residues of mAspAT plus an NH2-terminal pre-piece. Deviations from the reported amino acid sequence were found at positions 154 and 202 where the cDNA specifies Gln instead of Glu. The pre-piece consists of 22 amino acid residues, among them 4 arginine and no acidic residues. PMID- 3840804 TI - Reversibility of IVS 2 missplicing in a mutant human beta-globin gene. AB - We have studied the aberrant splicing of a human beta thalassemia globin gene by expression of the cloned gene in HeLa cells and oligomer-directed mutagenesis. A mutation 705 nucleotides into the large intervening sequence (IVS 2) of this gene leads to missplicing in which IVS 2 is incompletely removed, via two aberrant splices, from the vast majority of transcripts. One splice is from the 5' end of IVS 2 to a normal sequence 580 nucleotides into IVS 2 and another is from the mutated site 705 nucleotides into IVS 2 to the 3' end of the IVS. To study the splicing of this gene further, a mutation was introduced into the cryptic 3' splice site at position 580. This results in the complete removal of IVS 2 despite the presence of the thalassemia mutation at 705. The reversal of abnormal splicing by a change in the cryptic splice site suggests that the two abnormal splices are subtly interdependent. Thus, single base changes within IVS 2 can drastically alter the pattern of splicing in a human beta-globin gene. PMID- 3840806 TI - Activation of ornithine decarboxylase in monolayer cells treated with trypsin. AB - When monolayer Chinese hamster cells are treated with trypsin for short periods of time, ornithine decarboxylase (ODCase) activity increases two- to fourfold. This increase can be blocked by aprotinin, a protease inhibitor, and is not observed when cultures are dislodged from substrate mechanically prior to contact with exogenous trypsin. The trypsin-induced increase in ornithine decarboxylase activity is not due to degradation of enzyme or inhibitor molecules or to new enzyme synthesis. Immunoprecipitable protein, radiolabeled with [3H]alpha difluoromethylornithine in vitro, is the same molecular weight in cells harvested with or without trypsin. Protein-bound levels of this specific enzyme-activated irreversible inhibitor of ornithine decarboxylase are unchanged by trypsin treatments that increase enzyme activity. Trypsin treatment of rat embryonic fibroblasts, transformed by a temperature-sensitive mutant of Rous sarcoma virus, increases ODCase activity in cells growing at the nonpermissive, but not at the permissive, temperature for the transformed phenotype. These results suggest that ornithine decarboxylase can be activated by exogenous trypsin treatment in a manner that is dependent on cell adhesion properties, which are modified in transformed cells. PMID- 3840805 TI - Chemotaxis of Arbacia punctulata spermatozoa to resact, a peptide from the egg jelly layer. AB - Resact, a peptide of known sequence isolated from the jelly layer of Arbacia punctulata eggs, is a potent chemoattractant for A. punctulata spermatozoa. The chemotactic response is concentration dependent, is abolished by pretreatment of the spermatozoa with resact, and shows an absolute requirement for millimolar external calcium. A. punctulata spermatozoa do not respond to speract, a peptide isolated from the jelly layer of Strongylocentrotus purpuratus eggs. This is the first report of animal sperm chemotaxis in response to a defined egg-derived molecule. PMID- 3840807 TI - Determination of atracurium, laudanosine and related compounds in plasma by high performance liquid chromatography. PMID- 3840809 TI - Topographic organization of the optic radiation of the cat. AB - Pairs of injections of different neuroanatomical tracers--peroxidase-conjugated wheat-germ agglutinin (WGA) and [3H]proline--were made into the lateral geniculate nucleus (LGN) of the cat, and the course of the labeled fibers in the optic radiation was reconstructed. When the two injections were widely separated in the rostrocaudal dimension of the LGN (i.e., one in the representation of the lower quadrant of the visual field and one in the upper quadrant), the two sets of labeled fibers also remained separated in the long (roughly rostrocaudal) axis of the optic radiation. When the injections were widely separated in the mediolateral dimension of the LGN (i.e., one at the representation of the area centralis and one on the horizontal meridian in the far periphery of the field), the two sets of labeled fibers were separated in the short (mediolateral) dimension of the radiation. Shortly before reaching area 17, however, the medially and laterally placed fibers exchanged positions. This crossing is the basis of the topological inversion in the optic radiation deduced previously by Connolly and Van Essen (J. Comp. Neurol. 226:544-564, '84). The retinotopic organization of fibers in the radiation is less precise (in either dimension) than that of their terminal arborizations in visual cortex, but even injections as close as 1 mm to each other gave rise to spatially distinct fiber distributions. The WGA injections also labeled the corticogeniculate fibers by retrograde transport; these fibers traveled in a separate pathway medial to the optic radiation. PMID- 3840808 TI - The same myosin alkali light chain gene is expressed in adult cardiac atria and in fetal skeletal muscle. AB - We have isolated from a cDNA library constructed using mouse cardiac mRNA sequences, a clone (pC6) homologous to part of the mRNA encoding the myosin alkali light chain MLC1A from adult mouse atria. This sequence also hybridizes to mRNA encoding the fetal light chain form MLC1emb expressed in both fused myotubes in culture and in 18 day fetal skeletal muscle. These mRNA sequences are indistinguishable from the MLC1A messenger both on the basis of size and of their thermal stability of hybridization. In vitro translation of mRNA selected by hybridization with pC6 results in a protein that comigrates with the fetal MLC1emb isoform, and two-dimensional gel electrophoresis of adult atrial and fetal skeletal muscle proteins shows MLC1A and MLC1emb to be indistinguishable in the mouse. Southern blot hybridization of clone pC6 to mouse genomic DNA and the analysis of restriction fragment length polymorphisms between different mouse species demonstrates the presence of a single hybridizing locus in the mouse genome. These data provide strong evidence that the atrial MLC1A and fetal skeletal MLC1emb isoform are encoded by the same gene and by the same mRNA and are thus identical proteins. PMID- 3840810 TI - Colocalization of neuropeptide Y immunoreactivity in brainstem catecholaminergic neurons that project to the paraventricular nucleus of the hypothalamus. AB - Immunohistochemical methods were used in the rat to plot the distribution of neuropeptide Y (NPY) immunoreactivity in the paraventricular (PVH) and supraoptic (SO) nuclei of the hypothalamus, and a combined retrograde transport-double immunohistochemical labeling technique was used to determine the extent to which NPY immunoreactivity is coexpressed in brainstem cell groups that stain with antisera to phenylethanolamine-N-methyltransferase (PNMT; a marker for adrenergic neurons) or dopamine-beta-hydroxylase (DBH; a marker for adrenergic and noradrenergic neurons) and also project to the PVH. The results confirm the existence of a major NPY-immunoreactive pathway that is in a position to influence each major class of output neurons in the PVH. Thus, most parts of the parvicellular division receive a dense input that is similar to, though somewhat more extensive than, the one stained by DBH antisera. However, in the magnocellular division catecholaminergic inputs are preferentially associated with vasopressinergic neurons, while NPY-stained fibers tend to be more evenly distributed in regions containing both oxytocinergic and vasopressingergic neurons, and their density appear to be lower than that of DBH-stained fibers. In the SO, only a moderate NPY-stained input was apparent, while, as described previously, DBH-immunoreactive fibers are rather dense and are preferentially distributed in vasopressinergic regions of the nucleus. The results of combined retrograde transport-double immunohistochemical labeling experiments may be summarized as follows: the vast majority of cells in the medulla that were retrogradely labeled after discrete implants of the fluorescent tracer true blue into the PVH, and were PNMT-immunoreactive, also stained for NPY. However, less extensive co-localization was detected in noradrenergic cell groups of the caudal medulla. About 60% of the retrogradely labeled-DBH positive cells in the A1 cell group were also NPY-positive, while those in the caudal part of the nucleus of the solitary tract (the A2 cell group) usually failed to stain with anti-NPY. Similarly, in the locus coeruleus (the A6 cell group) where virtually all retrogradely labeled neurons were DBH-positive, only rarely were triply labeled cells detected. These results suggest that NPY immunoreactivity is extensively co contained within adrenergic neurons of the C1, C2, and C3 groups that project to the PVH, while the correspondence in noradrenergic cell groups is less complete, and generally limited to a subset of neurons in the A1 cell group.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3840811 TI - Erythrocyte ribosyluric acid of dairy cattle normal and deficient for uridine monophosphate synthase. AB - An inherited deficiency of uridine-5'-monophosphate synthase has recently been discovered in dairy cattle. The possibility was explored that this deficiency might be detected by low amounts of erythrocyte 3-N-ribosyluric acid, since it is synthesized by uridine monophosphate synthase. Ribosyluric acid was lower in six dairy cows with the deficiency compared to six controls, paired on the basis of age, stage of lactation, and diet (.66 vs. 1.38 mumol/ml). However, ribosyluric acid concentration measured in 50 normal cows showed a wide range (.28 to 2.35 mumol/ml), with nine lower than the mean for the deficient animals. This extensive variability may limit the usefulness of ribosyluric acid in diagnosing the inherited deficiency of uridine monophosphate synthase. PMID- 3840812 TI - Crossbreeding in tropical areas with emphasis on milk, health, and fitness. AB - Although use of European breeds for grading up of local cattle in tropical areas has been underway for nearly one century, few countries have definitive policies on utilization of crossbreeding systems. Crosses with European breeds have excelled local types in age at first calving, milk yield, days in milk, and calving interval. In general, crosses by Holstein sires have proven superior to crosses from other breeds. Contrary to findings in temperature areas, addition of a second improved breed (three-breed cross) has tended to deter rather than to improve performance. The cross 5/8 one breed has performed as well or better than two-breed crosses, but few evaluations have been on farms. The cross 3/4 European usually exceeds the two-breed cross slightly in milk yield, but reproduction is poorer. Mortality losses in 3/4 crosses up to 3 mo often have been high, 14 to 29%. Similarly, experiences with inter se matings of two-breed crosses has proven disappointing. Milk yield of 1/2 crosses of two-breed progeny has been 30 to 60% lower than for first generation two-breed crosses. Numerous attempts have been made to form synthetic groups from crossbred foundation. Most of these gene pools of breed combinations are approximately 5/8 improved breed and 3/8 local. Performance of five synthetic groups and their roles is discussed. Evidence has showed that with high dependence on tropical grasses and crop residues best sustained milk yield is 1800 to 2200 kg of milk per lactation. This means that more attention should be given to breeding plans to raise animal productivity from low to intermediate rather than providing genetic potential for productivity that cannot be supported economically in tropical areas. PMID- 3840813 TI - Speech processing in the auditory system. II: Lateral inhibition and the central processing of speech evoked activity in the auditory nerve. AB - A biologically realistic model of a uniform lateral inhibitory network (LIN) is shown capable of extracting from the complex spatio-temporal firing patterns of the cat's auditory nerve the formants and low-order harmonics of synthetic voiced speech stimuli. The model provides a realistic mechanism to utilize the temporal aspects of the firing and thus supports the hypothesis that the neural coding of complex sounds in terms of average rates can be supplemented by the information coded in the synchronous firing. At low levels of intensity the LIN can sharpen the average rate profiles. At moderate and high levels the LIN uses the cues available in the distribution of phases of the synchronous activity which exhibit rapid relative phase shifts at specific characteristic frequency (CF) locations (corresponding to the frequencies of the low-order harmonics in the stimulus). These temporal phase shifts manifest themselves at the input of the LIN as steep and localized spatial discontinuities in the instantaneous pattern of activity across the fiber array. The LIN enhances its output from these spatially steep input regions while suppressing its output from spatially smooth input regions (where little phase shifts occur). In this manner the LIN recreates from the response patterns a representation of the stimulus spectrum using the temporal cues as spatial markers of the stimulus components rather than as absolute measures of their frequencies. Similar results are obtained with various lateral inhibitory topologies, e.g., recurrent versus nonrecurrent, single versus double layer, and linear versus nonlinear. PMID- 3840814 TI - Fetal hydrops in a newborn with hypoplastic left heart syndrome: tricuspid valve "stopper". AB - Fetal hydrops in a newborn infant with hypoplastic left heart syndrome led to the discovery of tricuspid stenosis and insufficiency from an unusual malformation of the right venous valve of the embryonic sinus venosus. This unfortunate combination of lesions precluded surgical palliation for the hypoplastic left heart. PMID- 3840815 TI - Ferric acetate-uranium acetate reagent in cholesterol estimations in plasma and high density lipoprotein fractions: comparison with existing methods. AB - The use of ferric acetate-uranium acetate colour reaction for the estimation of cholesterol in the supernatants of plasma samples after precipitation of low density lipoprotein (LDL) and very low density lipoprotein (VLDL) cholesterol by heparin-MnCl2 was assessed and compared with the conventional method using the FeCl3 colour reaction and also with the method using o-phthalaldehyde as the colouring reagent. All three methods gave comparable values when total cholesterol in plasma samples was determined and also when high density lipoprotein (HDL) fractions were separated by ultracentrifugation and the cholesterol contents determined. But when heparin-MnCl2 precipitation was used for HDL separation, and the cholesterol content determined, the FeCl3 method gave significantly lower values. This could be due to interference of the cholesterol colour reaction with FeCl3, due to Mn2+ ions present in the supernatant. Addition of Mn2+ to cholesterol standards and subsequent colour development with ferric acetate-uranium acetate and FeCl3 reagents showed that Mn2+ decreased the absorbancy of the coloured complex at 560 nm only when FeCl3 was used. Percentage recovery of added cholesterol was also lower when the heparin-MnCl2 supernatant was treated with FeCl3 reagent for colour development. Use of ferric acetate uranium acetate reagent provides a simpler and quicker method. It does not suffer from interference due to the presence of Mn2+ ions and gives results comparable to the o-phthalaldehyde method and those using ultracentrifugation as the separation procedure. PMID- 3840816 TI - A method for the controlled cleavage of disulfide bonds in proteins in the absence of denaturants. AB - A simple method was developed for the controlled cleavage of protein disulfide bonds and the simultaneous blockage of the free sulfhydryl groups in the absence of a denaturant. The disulfide bonds of bovine serum albumin were cleaved unsymmetrically at pH 7.0 using 0.1 M sulfite in 0.1 M phosphate buffer and the free sulfhydryl groups formed were sulfonated in an oxidation-reduction cycle using molecular oxygen and 400 microM cupric sulfate as a catalyst. The reaction was affected by cupric ion concentration, sulfite concentration, reaction pH and temperature. The standardized method was successfully used to cleave the disulfide bonds of other proteins pepsin, trypsin, and chymotrypsin. The method is reliable and can be used for achieving progressive cleavage of disulfide bonds in proteins without employing a denaturant. PMID- 3840817 TI - Role of seminal prostaglandins in male fertility. II. Effects of prostaglandin synthesis inhibition on spermatogenesis in man. AB - The effect of prostaglandin biosynthesis inhibition has been studied in two groups of infertile oligozoospermic patients with high or normal-low seminal prostaglandin (PG) levels. PGE and 19-OH PGE were assayed by means of a gas chromatographic method and the most important seminal parameters (volume, concentration, motility and morphology of spermatozoa) were evaluated in basal conditions and at the end of indomethacin treatment, at a daily oral dose of 100 mg for thirty days. A drop in prostaglandin levels following indomethacin was observed in both groups of patients but only in the group with high concentrations of prostanoid derivates the prostaglandin inhibition was correlated with a significant improvement in sperm count and motility. PMID- 3840818 TI - Colloid droplet accumulation precedes the enhancement of 6-keto-PGF 1 alpha release from the thyrotropin-stimulated thyroid gland. AB - Influence of thyrotropin (TSH) on colloid droplet formation in thyroid follicular cells and on release of a stable prostacyclin metabolite, 6-keto-prostaglandin 1 alpha (6-keto-PGF 1 alpha) from the thyroid has been studied in rats. Maximal accumulation of colloid droplets preceded the enhancement of the 6-keto-PGF 1 alpha release. Such a time sequence speaks against the possibility of prostacyclin involvement in the thyroid secretory response to TSH. PMID- 3840819 TI - Is maximal acid output useful in identifying relapsing duodenal ulcer patients? AB - In a group of 94 duodenal ulcer patients consecutively studied and followed-up for 1 year, subjects with maximal acid output (M.A.O.) above 60 mmol/hour (mostly heavy-smoking men), were found to relapse more frequently than those with lower M.A.O. values (72.2% versus 27.6%; p less than 0.0005). A significantly higher relapse rate was also detected in patients treated with maintenance dosages of effective antisecretory drugs (cimetidine, ranitidine, pirenzepine) and presenting M.A.O. over 60 mmol/hour. It is yet to be established whether an alternative therapeutic regime may prove effective in preventing ulcer recurrence in patients with gastric hypersecretion. PMID- 3840820 TI - Primary biliary cirrhosis and Graves' disease. AB - We describe a patient with primary biliary cirrhosis associated with Graves' disease and discuss the possible autoimmune connections between the two disorders. PMID- 3840821 TI - Efficacy of ivermectin against Syphacia obvelata (Nematoda) in mice. AB - Ivermectin was evaluated against natural and artificial pinworm (Syphacia) infections in mice. Ivermectin given in the diet for 6 days at 0.0005% was 99% effective against both immature and adult worms. A diet level of 0.0004% reduced immature and mature pinworm by 99 and 75%, respectively but 0.0001% was inactive. One oral dose of 2.0 mg/kg was 100 and 97% effective against gravid females and immature worms, respectively. A dose of 1.0 mg/kg was 96 and 66% effective against the same parasitic stages. A similar effect was observed against adult male worms where 94 and 86% were removed by one oral dose of ivermectin at 2.0 and 1.0 mg/kg, respectively. PMID- 3840822 TI - The mycoplasmacidal properties of sodium hypochlorite. AB - The effect of hypochlorite concentration on Mycoplasma mycoides ssp. mycoides viability was tested under a variety of conditions. The experimental variables employed included chlorine-cell contact time, chlorine concentration, carrier system and organic loading. Initial populations of 10(6) c.f.u./ml were killed (no survivors in 1 ml) by hypochlorite solution containing 25 p.p.m. available chlorine in 15 s in the absence of organic load and 50 p.p.m. available chlorine in 5 min in the presence of 1% protein. Higher concentrations of hypochlorite were required to disinfect a porous carrier system in the absence or presence of protein. The results are in contrast to previous reports that M. bovis is killed only by high hypochlorite concentrations. PMID- 3840823 TI - Field trials of a new sub-acute rodenticide flupropadine, against wild Norway rats (Rattus norvegicus). AB - Fifteen experimental treatments with rodenticidal baits containing 0.1, 0.15 or 0.2% flupropadine were conducted on farmsteads against Rattus norvegicus infestations. Eight treatments were completely successful and the others gave kills ranging from 36 to 72% in 28 days. Treatments with 0.1 and 0.15% flupropadine were less successful against large infestations than against small ones. Flupropadine was most successful at 0.2% but still gave incomplete kills on farms where abundant alternative food was available. The compound was more effective than acute poisons in achieving complete control of Norway rat infestations, but was less reliable in doing so than anticoagulants. On the other hand, many flupropadine treatments gave quicker control and used smaller quantities of bait than anticoagulant treatments. PMID- 3840824 TI - In vitro immunization of human lymphocytes. I. Production of human monoclonal antibodies against bombesin and tetanus toxoid. AB - A procedure for in vitro sensitization of human lymphocytes against bombesin conjugated to tetanus toxoid (BTT) is described. Bombesin is a tetradecapeptide associated with small cell lung carcinoma. We found that antibody responses against bombesin as well as tetanus toxoid could be generated in vitro by culturing nylon-separated human splenic lymphocytes for 6 days with lipopolysaccharide, phytohemagglutinin-activated lymphocyte supernatants, human AB serum, and bombesin conjugated to tetanus toxoid. Cells sensitized by this procedure were fused to murine myeloma cells, NS-1. The specificities of resulting hybrids were analyzed by enzyme-linked immunoassays and competitive inhibition experiments. Hybrids secreting anti-bombesin (IgM) or anti-tetanus toxoid (IgM or IgG) were obtained. The ratio of IgG to IgM antibodies against tetanus toxoid could be increased by using antigen coupled to Sepharose beads. The sensitization procedure described here offers a system for the study of antigenic stimulation of human B lymphocytes in vitro and for the production of human monoclonal antibodies with the desired specificities. PMID- 3840825 TI - The expression of receptors for IgA on human monocytes and calcitriol-treated HL 60 cells. AB - In this study, we investigated the expression of IgA Fc receptors (FcR alpha) by human myeloid cells. By using a sensitive cytofluorometric IgA binding assay, we found that approximately 85% of peripheral blood monocytes bound IgA in an isotype-specific fashion. The HL-60 human promyelocytic leukemia cell line failed to express FcR alpha; however, treatment of HL-60 cells with the differentiating agent calcitriol induced the expression of FcR alpha on greater than 90% of these cells. Monocytes and calcitriol-treated HL-60 cells were capable of ingesting IgA coated erythrocyte targets, suggesting that phagocytosis could be mediated through FcR alpha. The induced HL-60 cell system represents a useful model for further studies on FcR alpha expression and function. PMID- 3840826 TI - Murine sex-limited protein: complete cDNA sequence and comparison with murine fourth complement component. AB - Murine sex-limited protein (Slp) is a structural homologue of the murine fourth complement component (C4) that lacks C4 activity and has no known function. The genes for C4 and Slp lie closely linked in the S region of the murine major histocompatibility complex. We have sequenced a cDNA clone that spans the entire protein-coding region of Slp from the mouse strain B10.WR. The sequence contains a 1735 amino acid-long open reading frame encoding a putative prepro-Slp flanked by 51 and 103 untranslated nucleotides at the 5' and 3' ends respectively; it shows 96% nucleotide and 94% amino acid identity with our previously reported complete sequence of murine C4 from the same mouse strain. The present complete Slp sequence differs slightly from our previously reported partial sequence from the same mouse strain; this suggests that at least two distinct Slp genes are transcribed in B10.WR mice. We suggest, by analogy with procaryotic DNA-binding proteins, that a three amino acid deletion in Slp, close to the Cls cleavage site, makes that site resistant to proteolysis; this renders Slp inactive. We also speculate on the possibility that Slp might be a gene in evolutionary transition; one that is midway in the evolution of a completely silent pseudogene or a new gene with a novel function. PMID- 3840827 TI - Chlamydia trachomatis: its role in tubal infertility. AB - We compared the prevalence of antibody to Chlamydia trachomatis among 88 women undergoing an evaluation for infertility and 49 women attending an antenatal clinic. Demographic data regarding sexual behavior were also collected. Eighteen women had tubal infertility and 70 had infertility due to a variety of other reasons. In comparison with women who had other causes for infertility, women with tubal infertility began coitus sooner (17.7 +/- 2.2 years vs. 19.5 +/- 3.4 years, P less than .05) and had more lifetime sex partners (4.5 vs. 1.33, P less than .001). Women with tubal infertility had a higher prevalence of antibody to C. trachomatis (13 of 18) than did women with nontubal causes for infertility (6 of 70, P less than .0001) or pregnant women (11 of 49, P = .0003). This high prevalence of antibody to C. trachomatis among women with tubal infertility was independent of sexual experience. By immunoblot analysis, an antigen of approximately 57,000 Da was immunodominant in 11 of 13 seropositive subjects with tubal infertility vs. 2 of 6 seropositive subjects with nontubal infertility (P = .046) and 1 of 11 seropositive pregnant women (P = .0003). Thus, women with tubal infertility frequently have serological evidence of prior infection with C. trachomatis and have a distinctive antigen-specific humoral immune response. These results further support the etiologic role of infection with C. trachomatis in tubal infertility. PMID- 3840828 TI - [Cellular immune function of patients with ovarian cancer before and after cancer therapy]. PMID- 3840829 TI - Normal surface properties of phosphatidylglycerol-deficient surfactant from dog after acute lung injury. AB - Lung surfactant was isolated from bronchoalveolar lavage of dogs during the late phase of recovery (15 days) from acute alveolar injury induced by subcutaneous injection of N-nitroso-N-methylurethane. This surfactant was compared with surfactant from control dogs in terms of in vitro surface properties, phospholipid composition and protein content, and those of its subfractions. Phospholipid composition and protein content were similar in the two groups, except that phosphatidylglycerol (PG) was markedly reduced and phosphatidylinositol (PI) was increased in the experimental group. In both, isopycnic densities of their subfractions in continuous sucrose density gradient were identical. The time course of surfactant adsorption was similar in both groups. Minimum surface tension (gamma min) was 4.1 +/- 1.5 dynes/cm in the experimental dogs and 3.8 +/- 1.3 dynes/cm in the controls. Surface compressibility (SC), stability index (SI), and dynamic respreadability (DR) of the surfactants from the two groups were nearly identical. When compared to an artificial surfactant composed of dipalmitoyl phosphatidylcholine (DPPC) and PG in 9:1 molar ratio a mixture of DPPC-PI 9:1 prepared identically showed similar gamma min, SC, SI, and DR, and a much higher surface adsorption rate. These results suggest that PG is not essential for normal in vitro surfactant function and that its role may be assumed by PI. PMID- 3840830 TI - Effective extraction of diagnostic ECG waveform information using orthonormal basis functions derived from body surface potential maps. AB - A common basis of orthogonal waveform functions was derived from 128 lead body surface potential maps of 405 subjects. Twelve such orthogonal functions or frames were adequate for reconstruction of original ECGs from the beginning of QRS to the end of T. A larger number of frames (18) was required when basis functions were derived separately for QRS (10) and ST-T segments (8). Diagnostic information content of the coefficients of the orthogonal basis functions was evaluated in comparison with Minnesota Code criteria for myocardial infarction and with a more advanced multivariate ECG analysis program (Pipberger Program). This was done by deriving a linear discriminant function for separating normals from ECGs of patients with myocardial infarction and testing the discriminant in a different test population of infarcts and normals. The diagnostic accuracy of orthogonal basis functions was as good as that of Pipberger's program and considerably better than that of the Minnesota Code. The classification method described is insensitive to noise and errors in detecting QRS and T wave onsets and offsets or in selecting proper baseline for amplitude measurements. The robustness and enhanced classification stability with respect to noise and minor wave detection errors is a potential advantage particularly in serial ECG comparison. PMID- 3840831 TI - Effects of maternal sodium depletion on the composition of ovine fetal fluids. AB - Effects of maternal sodium depletion on the composition of ovine fetal fluids were studied. Maternal Na depletion was achieved by 48-h drainage of parotid saliva. There was a significant decrease in both maternal and fetal plasma Na concentration, indicating that both mother and fetus had experienced the Na depletion stimulus. There was a significant increase in maternal blood aldosterone but the change in fetal blood aldosterone was not significant. In animals where there was an increase in fetal blood aldosterone the increase could be accounted for by transfer of aldosterone across the placenta from the mother. There was a significant decrease in fetal urinary Na concentration and Na excretion and the urinary Na/K ratio fell in seven out of eight studies. These observations are consistent with the hypothesis that fetal Na depletion sensitizes the fetal kidney to the action of circulating aldosterone as in the adult. PMID- 3840832 TI - Progestin receptor in the thymus of ovariectomized immature rats. AB - By using the synthetic progestin promegestone (R5020), the location and characteristics of progestin receptors in the thymic cytosols from immature ovariectomized oestrogen-treated rats were determined. Tritiated promegestone bound to the cytosol with high affinity (dissociation constant (Kd) = 2.0 +/- 0.3 nmol/l; promegestone greater than progesterone greater than oestradiol greater than corticosterone testosterone) and low capacity (number of binding sites (Bmax) = 143.0 +/- 13.5 fmol/mg protein). These values were appropriate for progestin receptors. However, an extremely high dose of dexamethasone (10 mumol/l; 1000-fold excess over [3H]promegestone) slightly inhibited the specific binding. Progestin receptors were predominantly located in the reticuloepithelial (RE)-cell fraction, with few in the thymocyte T-cell fraction. The receptor level was raised (24.9 +/- 11.3 (S.E.M.) to 143.0 +/- 13.5 fmol/mg protein) with increased doses of oestrogen (0-30 micrograms) administered in vivo. Using sucrose density gradient ultracentrifugation it was found that the thymic progestin receptor had a sedimentation coefficient of 9S under low-salt conditions. These results clearly suggest that the thymus of the immature female rat contains a specific progestin receptor which is mainly located in the RE cells. PMID- 3840833 TI - An enzyme-linked immunosorbent assay for the measurement of thyroglobulin in human serum using mouse monoclonal antibodies. AB - A robust, rapid, sensitive and specific enzyme-linked immunosorbent assay (ELISA), using an in-house immunoglobulin-A-sub-class mouse monoclonal human thyroglobulin antibody (WNSM2), with a sensitivity of 1.51 pmol/l has been established for the measurement of thyroglobulin in serum. Standard curves in varying dilutions of human serum were similar to standard curves obtained in serum-free medium, thus demonstrating no significant cross-reactivity with any serum proteins other than thyroglobulin. Levels of serum thyroglobulin detected by ELISA correlated significantly (r = 0.93, P less than 0.001) with those from a standardized and well-characterized radioimmunoassay. The coefficients of variation within and between ELISA assays were 3.9 and 7.1% respectively. Thyroglobulin was detectable in 87% of 54 normal subjects who had no history of thyroid or autoimmune disease, the mean (+/- S.D.) for this group being 15 +/- 6.6 pmol/l with a range of 1.51-53 pmol/l. Using this assay, levels of thyroglobulin were shown to be significantly (P less than 0.002) increased in patients with untreated hyperthyroid Graves' disease compared with normal subjects. PMID- 3840834 TI - The isolation and identification of precursors and reaction products in the clandestine manufacture of methaqualone and mecloqualone. AB - Abuse of the hypnotic quinazolinone is well recognized and increasing. Clandestine laboratories producing methaqualone (2-methyl-3-ortho-tolyl-4(3H) quinazolinone) and mecloqualone (2-methyl-3-ortho-chlorophenyl-4(3H) quinazolinone) have been discovered throughout the United States. These laboratories utilize one of many synthesis routes to produce the illicit quinazolinone. Frequently, the clandestine chemist has little, if any, formal education in chemistry; does not keep notes; and does not label flasks and beakers containing solutions. The forensic chemist may be asked to analyze unmarked reaction mixtures that were seized in a clandestine laboratory raid. As a result, a rapid method of isolation and identification of the precursors and products of such a mixture is presented. PMID- 3840835 TI - Retrieval of analytical data and substance identification in systematic toxicological analysis by the mean list length approach. AB - Chromatographic techniques are basic tools in systematic toxicological analysis. Extensive data bases with retention parameters of known drugs to aid in the identification of substances found are available or in preparation. For a search in such a data base the computer is indispenable. The commonly used window search has some disadvantages which can be overcome by a search based on the statistical concept, the mean list length. The latter retrieval system gives for each candidate in the identification process a probability value. It is shown that these probability values are highly influenced by the reproducibility of the retention parameters of the analytical systems used. Explanations for these phenomena are given. PMID- 3840836 TI - Correlation of circumstances with pathological findings in asphyxial deaths by hanging: a prospective study of 61 cases from Seattle, WA. AB - Correlation of the circumstances of death with the pathologic findings in this prospective study of deaths by hanging affords insight pertaining to certain of the pathophysiologic mechanisms involved in fatalities of this type. The presence of conjunctival and facial/periorbital petechial hemorrhages correlates with increasing levels of body support below the point of ligature suspension. Hyoid bone and/or thyroid cartilage fractures (found in 26% of cases) are most frequently identified in those persons found completely suspended and in victims in the older age ranges. No hyoid bone/thyroid cartilage fractures, internal soft tissue injury, or petechiae were present in 13 (21%) of the study cases. PMID- 3840837 TI - A numerical taxonomic study of Actinobacillus, Pasteurella and Yersinia. AB - A numerical taxonomic study of strains of Actinobacillus, Pasteurella and Yersinia, with some allied bacteria, showed 23 reasonably distinct groups. These fell into three major areas. Area A contained species of Actinobacillus and Pasteurella: A. suis, A. equuli, A. lignieresii, P. haemolytica biovar A, P. haemolytica biovar T, P. multocida, A. actinomycetemcomitans, 'P. bettii', 'A. seminis', P. ureae and P. aerogenes. Also included in A was a composite group of Pasteurella pneumotropica and P. gallinarum, together with unnamed groups referred to as 'BLG', 'Mair', 'Ross' and 'aer-2'. Area B contained species of Yersinia: Y. enterocolitica, Y. pseudotuberculosis, Y. pestis and a group 'ent-b' similar to Y. enterocolitica. Area C contained non-fermenting strains: Y. philomiragia, Moraxella anatipestifer and a miscellaneous group 'past-b'. There were also a small number of unnamed single strains. PMID- 3840838 TI - Detection of 5-S-cysteinyldopamine in human brain. AB - 5-S-Cysteinyldopamine was synthesized and used as reference compound in HPLC analyses of extracts from various regions of human brain. The compound could be detected in brain regions rich in dopamine (caudate nucleus, putamen, globus pallidus and substantia nigra) but not in other regions (cerebellum, occipital cortex). The occurrence of 5-S-cysteinyldopamine in dopaminergic brain regions supports the hypothesis that dopamine in part undergoes autoxidation, leading to formation of highly reactive quinones. The newly discovered metabolite may prove useful in future studies of dopamine autoxidation and the possibly resultant cytotoxicity in aging and degenerative brain disorders. PMID- 3840839 TI - Pediatric Hodgkin's disease in India. AB - Twenty-one percent of all Hodgkin's disease in India was seen in the pediatric age groups at the Tata Memorial Hospital (Bombay, India). From 1975 to 1982, 151 cases of children were reviewed. The youngest presentation was at 3 years in three patients, with a marked male: female ratio of 5.5:1. Twenty-six patients were previously treated before referral while the remaining 125 cases were investigated and treated according to the prevalent protocols in 1975 to 1978 and 1979 to 1982. Clinical staging revealed 54% of patients in stages I and II with symptoms in 20%, and 46% of patients in stages III and IV with symptoms in 67%. Staging laparotomy was performed in 27 patients, with a total changes of staging in 17 children (63%). The mixed cell types (46%) and lymphocytic predominant types (31%) were the most common histologic presentations. Nine percent nodular sclerosis and 9% lymphocytic-depleted varieties were also observed. Five percent of all cases were not classifiable. Minimum adequate treatment was completed in 87 cases. Comparisons were made between the treatments administered to 40 patients during the initial period 1975 to 1978 when individualized treatment was administered, and the later 47 patients during the 1979 to 1982 period, when chemotherapy was the mainstay of treatment with involved field radiation. PMID- 3840840 TI - Emotional stress and iodine-131 therapy for Grave's disease. PMID- 3840841 TI - Lectin binding and steroid receptors in human breast carcinomas. AB - A series of breast carcinomas of known steroid receptor status have been examined for evidence of binding of the lectins peanut agglutinin, soy bean agglutinin and wheat germ agglutinin. Correlations were found between oestrogen receptor status and reactivity of carcinomas to peanut agglutinin and soy bean agglutinin but these were not absolute. Wheat germ agglutinin binding was unrelated to the presence of oestrogen receptors. No relationship was evident between progestogen receptors and the binding of any lectin. It therefore seems unlikely that lectin histochemistry can replace steroid receptors as markers of hormone dependence in breast carcinomas. PMID- 3840842 TI - Natural course of juvenile autoimmune thyroiditis. AB - Forty-six patients with juvenile autoimmune thyroiditis were followed for an average of 6.5 years. The diagnosis was based on a firm goiter and on cytologic findings of lymphocytic thyroiditis. The thyroid function and the size of the thyroid gland were regularly evaluated, and thyroid cytologic findings reevaluated once about 4.5 years after the diagnosis was made. Initially, 24 patients were euthyroid, 16 subclinically hypothyroid, and six hypothyroid. At the end of follow-up, 29 patients were euthyroid, six subclinically hypothyroid, and 11 hypothyroid, but there had been an extensive exchange of individual patients among these three groups. At cytologic reevaluation, the changes were virtually unaltered. Thyroid antibodies and circulating immune complexes were repeatedly tested: on one or more occasions, 85% of the patients had positive test results for thyroid antibodies, and about 50% for circulating immune complexes. Hypothyroidism at the end of follow-up correlated with the initial hypothyroid state and with thyroglobulin antibodies of IgG class detected by enzyme immunoassay. The best predictors of the final hypothyroid state were female sex, initial hypothyroidism, IgG thyroglobulin antibodies by EIA, and IgG circulating immune complexes assayed by conglutinin-binding test-EIA. PMID- 3840843 TI - Effect of gamma-radiation on fowl sperm function in vitro and in vivo. AB - Doses of up to 300 Gy of ionizing radiation had little effect on fowl sperm morphology, ATP content and motility when measured in vitro. Fertility of eggs from hens inseminated with spermatozoa receiving 50 Gy, in terms of post-oviducal development, was less than 4%. However, 35% appeared 'fertile' by macroscopic examination of the germinal disc of unincubated eggs. These contained few embryonic cells, although the vitelline membrane contained many trapped spermatozoa. After doses of 100 Gy or more, inseminated spermatozoa were not found in the vitelline membrane and no fertile or apparently fertile eggs were produced; nor did such spermatozoa enter the utero-vaginal sperm-host glands. Genetic transformation using fowl spermatozoa irradiated with doses in excess of 100 Gy appears to be an unlikely prospect. PMID- 3840844 TI - Low-dose radioiodine given six-monthly in Graves' disease. AB - Experience using low-dose radioiodine given six-monthly instead of yearly in hyperthyroid patients with Graves' disease is reported. One hundred and thirty five patients have been treated over a three-year period with 74 MBq (2 mCi) doses of 131I. Thirty-eight percent were controlled with a single dose. Those patients requiring more than one dose were treated with a further 74 MBq (2 mCi) 131I at six-monthly intervals until euthyroid. Using this approach, 46% were euthyroid one year after starting treatment, and 75% were euthyroid at two years. The incidence of hypothyroidism following treatment was 2.2% at one year, with a yearly incidence thereafter of 4-6%. Six-monthly scheduling of low-dose radioiodine in Graves' disease can reduce the time taken to become euthyroid, compared with conventional yearly low-dose treatments. Further follow up is required to confirm the present low incidence of hypothyroidism following treatment. PMID- 3840845 TI - [Peri- and postnatal study on halopredone acetate in rats]. AB - A peri- and postnatal study of halopredone acetate (THS-201), a synthetic corticosteroid, was carried out using Jcl: Wistar rats. Pregnant rats were treated subcutaneously in doses of 0.05, 0.4, 3.2 and 25.6 mg/kg/day, from day 17 of gestation to day 21 after delivery. All pregnant rats were allowed to litter naturally, and the postnatal development of offsprings was observed. The results obtained from the present study were as follows. No influences of THS-201 administration were observed on gestation, delivery and lactation of dams. THS 201 administration did not have any influences on viability and development, various functions such as reflex response, learning and reproductive performance of F1 generation, and further on development of F2 generation. Therefore, it was concluded that the non-effect dose of THS-201 for the reproduction of dams and development of F1 generation was 25.6 mg/kg/day. PMID- 3840846 TI - Female-to-male transmission of AIDS. PMID- 3840847 TI - Oregon Health Decisions. An experiment with informed community consent. AB - Oregon Health Decisions is a citizen-based project intended to develop statewide awareness of severe bioethical dilemmas. The project has set in motion civic means for addressing and resolving problems in Oregon's health provision system associated with personal autonomy, equity of access, prevention of illness, and humane cost containment. The process of civic involvement with consequent results is described together with the implications for future health policy in Oregon and elsewhere. PMID- 3840848 TI - [The relationship of breast cancer and thyroid diseases]. AB - A relationship between breast cancer and thyroid diseases has been postulated for many years. Several studies have demonstrated an increased risk of breast carcinoma in patients with goiter, chronic thyroiditis (hypothyroidism) or thyroid supplement therapy itself, while others have shown either a slight, nonsignificant excess or none at all. In an overview of the literature, the results were inconclusive and rather controversial in each other. Apart from the thyroid disorders mentioned above, a relationship between thyroid cancer and breast cancer also has been suggested in the recent studies. This is rather probable as a fact, but common risk factors for the two cancers have not been clarified yet and remains in future problem. PMID- 3840849 TI - Prostacyclin production reduced in diabetics with vascular complications. AB - Concentrations of plasma 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha), a stable metabolite of prostacyclin, were measured by radioimmunoassay before and after 3 min of induced ischemia in 45 diabetics and 23 controls matched for age. In the 45 diabetics, 15 had no vascular complications (group I), 10 had a macroangiopathy (group II), 10 had a microangiopathy (group III) and 10 had both macroangiopathy and microangiopathy (group IV). Plasma levels of 6-keto-PGF1 alpha before forearm ischemia were significantly lower in group IV diabetics than in non-diabetic controls (188 +/- 17 pg/ml and 245 +/- 14 pg/ml, respectively). After 3 min of ischemia, plasma 6-keto-PGF1 alpha concentrations were increased in control subjects by 34% and by 21% in group I diabetics. In group III diabetics as well as diabetics with atherosclerotic vascular lesions (groups II and IV), no significant change was observed after 3 min of ischemia. These results suggest that impaired vessel wall prostacyclin production may to some extent be responsible for the development of diabetic retinopathy and nephropathy as well as atherosclerotic vascular complications. PMID- 3840850 TI - Increase of the ventricular fibrillation threshold by 711389-S, a new antiarrhythmic agent, in guinea-pigs. AB - The increase of the ventricular fibrillation threshold (VFT) by 711389-S, a new antiarrhythmic agent, was compared with several other antiarrhythmic drugs using both in vitro (Langendorff) and in vivo preparations of guinea-pigs. The doses of antiarrhythmic drugs for increasing VFT by 10 volts in in vitro (microgram) and in vivo (mg/kg, i.v.) preparations were as follows: 711389-S: 4.2, 0.15; disopyramide: 32.6, 0.86; quinidine: 32.0, 0.57; aprindine: 7.6, 0.55; propranolol: 16.6, 0.57; and lidocaine: 20.7, 1.52. The duration of the antifibrillatory effects of 711389-S almost corresponded with those of aprindine and propranolol. PMID- 3840851 TI - [Intravenous administration of molsidomin in the acute period of myocardial infarct]. AB - A study of central hemodynamic parameters, ECG charting and the activity of serum CPK and its MB fraction in 58 patients with acute myocardial infarction demonstrated that intravenous administration of 20 mg Corvaton, at the rate of 3 micrograms/kg/min, was effective for both controlling an acute left-ventricular failure, and limiting the infarcted area. A three-day treatment normalized systemic and central hemodynamic parameters in cases of medium-size infarction, and considerably reduced manifestations of acute left-ventricular failure in patients with a large area of necrosis. PMID- 3840852 TI - [Retrolental fibroplasia--a still current problem in neonatology]. PMID- 3840853 TI - [Increase in the intraocular pressure in postcataract surgery using a neodymium YAG laser]. AB - In a prospective clinical study 54 postcataract membrane dissections (51 patients) were performed using a Q-switch Nd-YAG laser. Under standardized conditions all patients were pretreated with prostaglandin inhibitors and received topical steroids and beta-blockers in low concentrations, as well as carbonic anhydrase inhibitors orally. The changes in visual acuity and the response of IOP to total energy input were analyzed. There was no statistically significant correlation between postoperative rise in IOP and total energy input. The clinical relevance of the results is discussed. PMID- 3840854 TI - Treatment of Graves' ophthalmopathy with cyclosporin A. AB - To evaluate the effect of Cyclosporin A in the management of Graves' ophthalmopathy, we treated 13 patients with severe euthyroid endocrine eye disease with the immunosuppressive drug. Follow up consisted of clinical investigation, laboratory evaluation with detailed thyroid function tests and complete ophthalmological assessments including A and B scan ultrasound and computerized tomography (CT) of the orbits. Cyclosporin A given over 4-7 months resulted in improvement of clinical signs and symptoms of the disease due to a positive effect of the drug on soft tissue changes. The more objective methods did not demonstrate any unequivocal change in proptosis, visual acuity, intraocular pressure and thickness of extraocular muscles. Cyclosporin A was not able to stop acute progression of ophthalmopathy in one patient and did not obviate surgical decompression of the orbits in two more patients. There was no measurable effect of treatment on the underlying immunological process with regard to thyroid disease. PMID- 3840855 TI - [Clinical manifestations of lymphosarcomas with the primary lesion in the retroperitoneal and mesenteric lymph nodes]. PMID- 3840856 TI - Androgen receptor in genital tubercle of rabbit fetuses and newborns. Ontogeny and properties. AB - In newborn rabbits of both sexes, an androgen receptor was characterized in the genital tubercle. Homogenates exhibited high affinity (Kd was about 0.4 nM) and saturable binding of [3H]methyltrienolone. The half-life of the [3H]5 alpha dihydrotestosterone-androgen receptor complex was 72 h at 4 degrees C. The receptor was inactivated by heat and pronase and the binding was specific for potent androgens. Sucrose gradient analysis revealed a 8-9 S [3H]methyltrienolone binding protein in cytosols from both sexes. Androgen binding, in the homogenate, was detected as soon as day 18 of gestation in both sexes and the number of binding sites increased until birth. During sexual organogenesis and at birth there were no major differences between males and females in the amount or affinity of androgen binding. Specific androgen binding was also detected in sexual ducts of male and female newborns. PMID- 3840857 TI - Age-associated decline in natural killer (NK) activity reflects primarily a defect in function of NK cells. AB - The possible role that natural killer (NK) cells might play in the control of tumors and certain infections prompted an investigation of the status of NK cells in aged mice of two inbred strains (C3H and C57BL/6). The frequency of NK cells in young-adult and aged mice was assessed by two methods that provided accurate estimates of the relative numbers of NK cells: (a) a functional assay procedure from which the number of lytic units could be estimated, and (b) a target-cell (YAC-1 tumor cells) binding procedure. The frequency of NK cells in the spleens of untreated mice as well as in mice infected with Trypanosoma musculi, the latter a powerful NK cell activating agent, was determined. In both strains of mice the frequency of functionally-competent NK cells declined significantly with age, to a greater extent in C3H than in C57BL/6 mice. Similarly, the potential to generate NK cells upon parasite activation was significantly less in aged than in young mice and the reduced potential was more apparent in C3H than in C57BL/6 mice. In contrast, the target cell-binding procedure showed only a modest decline in the frequency of NK cells in the spleens of aged mice of either strain. It appears, therefore, that the decline in NK activity during aging is a reflection of loss of competence to lyse targets rather than a major decline in the actual numbers of NK cells. PMID- 3840858 TI - Promotion of wound healing by yeast glucan evaluated on single animals. AB - The effectiveness of yeast glucan in the acceleration of wound healing was evaluated in mice, rats and guinea pigs. In all experiments comparison between glucan treatment in one hind leg and saline treatment as control on the other leg was made on identical wounds. The degree of healing in the two legs was evaluated macroscopically and classified as follows: 1. healing more advanced in glucan treated wound marked by (+). 2. No significant difference between the two legs marked by (0). 3. Healing more advanced in the control wound, marked by (-). During the days when the differences were most obvious, 60% to 80% of the animals showed more advanced healing in the glucan treated wound, 20% to 40% showed no significant difference; and 0 to 15% showed more advanced healing in the control, saline treated wound. The average time for complete wound healing was reduced by about 18% as a result of glucan treatment. The histological analysis shows that the acceleration of wound healing was mediated by early arrival of macrophages to the wound area in the glucan treated wounds. PMID- 3840859 TI - Maximum and minimum contact angles induced by pulmonary surfactants. PMID- 3840860 TI - [Antithyroid antibodies and fine-needle aspiration biopsy in the diagnosis of Hashimoto's thyroiditis]. PMID- 3840861 TI - [The value of clinical diagnosis in knee injuries, especially meniscal rupture]. PMID- 3840862 TI - An accurate laser radiometer for determining visible exposure times. AB - A laser light radiometer has been developed for the Electro-Optics Branch of the Center for Devices and Radiological Health (CDRH). The radiometer measures direct laser radiation emitted in the visible spectrum. Based upon this measurement, the instrument's microprocessor automatically determines at what time duration the exposure to the measured laser radiation would exceed either the class I accessible emission limits of the Federal Performance Standard for laser products or the maximum permissible exposure limits of laser user safety standards. The instrument also features automatic background level compensation, pulse measurement capability, and self-diagnosis. Measurement of forward surface illumination levels preceding HpD photoradiation therapy is possible. PMID- 3840863 TI - The solitary pulmonary nodule. Decision analysis. AB - The management of a patient with a solitary pulmonary nodule is often problematic. Particularly in older patients and those with cardiorespiratory disease, the risks of intervention frequently equal or exceed its potential benefits. In this paper the choice between expectant management, thoracotomy, and transthoracic needle biopsy is examined for the asymptomatic patient with a solitary pulmonary nodule. We have designed and implemented a computer-assisted decision-analytic model of this clinical situation. The model incorporates age, sex, smoking history, and underlying cardiorespiratory status. It considers the probability of having a malignant nodule, the risks of biopsy and surgery, the sensitivity and specificity of biopsy, the resectability rate of malignant nodules, and the morbidity-adjusted life expectancies of patients in 16 outcome categories. Sensitivity analyses were performed and decision thresholds determined to assess the effect of varying the model's data base. These results can be of assistance in choosing therapy for patients with solitary pulmonary nodules and can provide a better understanding of the factors involved in this decision making process. PMID- 3840864 TI - A novel cell-surface antigen expressed on most leukocytes and a minor cortisone resistant population of thymocytes in rats: characterization by monoclonal antibodies. AB - A cell-surface antigen on rat lympho-hemopoietic cells was determined by using a monoclonal antibody, R2-1B3 (1B3). The 1B3 antibody, when tested for its reactivity with different hemopoietic cells by cytofluorography with a FACS analyzer, labeled more than 80% of lymph node, spleen, and bone marrow cells and 10-20% of thymus cells. Cytofluorographic analysis performed on purified rat T cells, B cells, macrophages, and granulocytes demonstrated that the antigen defined by 1B3 was readily detectable on all of these cell types, with the greatest expression on B cells. A minor population of thymocytes that were labeled by 1B3 appeared to be cortisone-resistant and were located mainly in the thymic medulla. These 1B3 positive thymic cells seemed to be functionally more mature than 1B3-negative thymus cells as suggested by the fact that the cytotoxic treatment of thymus cells with 1B3 antibody and complement (C) resulted in significant reduction of their responsiveness to phytomitogens and lymphokines derived from concanavalin A (con A) activated rat spleen cell cultures. Immunochemical data showed that 1B3 antibody recognized the broad ill-defined band with a molecular weight of 32K to 47K daltons as estimated by SDS polyacrylamide gel electrophoresis. These data indicate that the 1B3 defined antigen is distinct from other, previously reported, antigens on rat lymphoid cells including leukocyte-common (L-C) and MRC OX-22 antigens, and that this 1B3 antibody is a useful reagent for analyzing the intrathymic differentiation of T cells in rats. PMID- 3840865 TI - Prenatal diagnosis of hereditary protein C deficiency. PMID- 3840866 TI - Simple linear regression in medical research. AB - This article discusses the method of fitting a straight line to data by linear regression and focuses on examples from 36 Original Articles published in the Journal in 1978 and 1979. Medical authors generally use linear regression to summarize the data (as in 12 of 36 articles in my survey) or to calculate the correlation between two variables (21 of 36 articles). Investigators need to become better acquainted with residual plots, which give insight into how well the fitted line models the data, and with confidence bounds for regression lines. Statistical computing packages enable investigators to use these techniques easily. PMID- 3840867 TI - Forensic application of DNA 'fingerprints'. AB - Many highly polymorphic minisatellite loci can be detected simultaneously in the human genome by hybridization to probes consisting of tandem repeats of the 'core' sequence. The resulting DNA fingerprints produced by Southern blot hybridization are comprised of multiple hypervariable DNA fragments, show somatic and germline stability and are completely specific to an individual. We now show that this technique can be used for forensic purposes; DNA of high relative molecular mass (Mr) can be isolated from 4-yr-old bloodstains and semen stains made on cotton cloth and digested to produce DNA fingerprints suitable for individual identification. Further, sperm nuclei can be separated from vaginal cellular debris, obtained from semen-contaminated vaginal swabs, enabling positive identification of the male donor/suspect. It is envisaged that DNA fingerprinting will revolutionize forensic biology particularly with regard to the identification of rape suspects. PMID- 3840868 TI - [Therapy of orbital and retroorbital space occupying processes with optic nerve compression]. AB - Space occupying lesions involving the optic nerve require individual management. Graves' disease is first treated with cortisone: failures of treatment require radiation and operative decompression. Good results have been achieved with cytostatic drugs and, in acute progressive loss of vision, with plasmapheresis. Idiopathic pseudo-tumor orbitae disappears with cortisone, failures of treatment indicate malignant development of a lymphoma, which requires management with cytostatic drugs or radiation. Granulomatous infiltration of the optic nerve in sarcoidosis should be treated first of all with steroids before proceeding to operative treatment. Primary optic nerve tumors such as gliomas and meningeomas should be removed operatively if they are located in front of the chiasm and continue to grow. If the chiasm is involved, radiation is preferable. Doubtful cases of clinically almost indistinguishable pinealomas which are very radiosensitive require primary radiation therapy. Sinus cavernosus fistulas should be treated by selective angiographic occlusion of the fistula. If this is impossible, the internal carotid artery may be occluded by introducing a ballon catheter. Loss of vision after blunt head trauma should be treated with megadoses of steroids, operative treatment is only promising in cases with progressive loss of vision. PMID- 3840869 TI - Breakpoints of reciprocal creatinine plots. PMID- 3840870 TI - [Autoimmune thyroiditis and pregnancy]. PMID- 3840871 TI - Distribution of human leumorphin-like immunoreactivity in the monkey spinal cord revealed by immunocytochemistry. AB - The regional distribution of human leumorphin (HL)-like immunoreactivity (HL-LI) in monkey (Macaca fuscata) spinal cord and dorsal root ganglia was investigated by peroxidase-anti-peroxidase immunocytochemistry using specific antiserum. HL-LI positive fibers and terminals were distributed densely in laminae (Rexed) I and II, and sparsely in laminae III-VII and X, but no immunoreactive elements were observed in the ventral horn, the white matter or the dorsal root ganglia. Many immunoreactive neuronal perikarya were found in laminae I and II. Intrathecal injection of colchicine also revealed the presence of immunoreactive neuronal perikarya in laminae III-VII and X. These results suggest the presence of HL-LI, which represents HL and/or its C-terminal fragment, in the neuronal elements of the monkey spinal cord. PMID- 3840872 TI - The individual kidney function. A comparison between frame summation and deconvolution. AB - A variety of methods have been developed to estimate the individual kidney function. Many methods use a scintillation camera the data from which are processed in a computer system. To compare two of these methods, the principles of which are completely different, such as the 'Oberhausen' method of frame summation and background subtraction and a method that uses deconvolution, the scintillation camera data of 121 patients have been collected. A computer program was written to calculate the individual kidney function by which both methods were used. It is often asserted that specific techniques of frame summation and background subtraction are not suitable to define the individual kidney function. To see if this assertion is true, two different methods have been compared using the contribution of the left kidney to the individual kidney function. An excellent correlation between the two methods was found (R = 0.9808, n = 121) which proves the ability of both the 'Oberhausen' method and the method that uses deconvolution. However, it is also seen that the 'Oberhausen' method may give false results, caused by an increasing background count outside the kidneys in patients with a large difference in function between the two kidneys. PMID- 3840873 TI - Puerperal hypertension, stroke, and seizures after suppression of lactation with bromocriptine. AB - The "absolute safety" of bromocriptine as a drug of choice in suppression of lactation is questioned. Two cases of cerebrovascular events after the use of bromocriptine for lactation suppression are presented, and the available, pertinent literature is reviewed. PMID- 3840874 TI - Complications associated with the use of the neodymium:YAG laser. AB - The neodymium:YAG laser was used in a consecutive series of 93 eyes. Diagnosis was opacified posterior capsule in 81 eyes of which 52 were pseudophakic, with cystoid macular edema and vitreous strands in eight eyes, pigmented anterior hyaloid in two eyes, opacified anterior capsular flap in one eye and vitreous strand blocking an anterior chamber tube shunt to an encircling band tube in one eye. Despite significant visual improvement and reduction of cystoid macular edema, a variety of complications were seen. These included pitting of the implant in 26 eyes and cracks in four, two of which developed a vitreitis. These occurred more frequently in our earlier cases. Also seen was elevated IOP in six eyes, pupillary block in two, vitreous face rupture in five, cystoid macular edema in four, hyphemas in four, corneal injury in two and acute peripheral retinal hemorrhage in one eye. PMID- 3840875 TI - Endothelial damage from retrocorneal mode-locked neodymium:YAG laser pulses in monkeys. AB - Laser pulses were focused 0.85 to 1.60 mm from the rhesus monkey corneal endothelium using a mode-locked laser at 3.3 and 4.5 mJ. Sixteen slightly off axis pulses were applied with no contact lens on the eye. Corneal damage was studied clinically and by scanning electron microscopy. The retrocorneal distance for a 50% incidence of endothelial damage (LD 50 = lesion distance, 50%) for 3.3 mJ mode-locked pulses was found to be 1.60 mm. All mode-locked pulses of 4.5 mJ focused 0.85 to 1.60 mJ from the endothelium caused damage. In comparison, Q switched pulses of 12 mJ or less are not likely to damage the cornea if focused more than 0.75 mm from the endothelium. The severe, early effect of mode-locked pulses is edema of endothelial cells in a 0.2- to 0.3-mm diameter circular zone surrounding a 0.1-mm diameter denuded zone with a small central break of Descemet's membrane. By two months, mild and moderate lesions heal with little or no distortion of the endothelial mosaic. Irregular enlargement of endothelial cells surrounding and covering the previously denuded area of severe lesions is caused by both mode-locked and Q-switched treatment. In no case was there clinically significant, persistent damage in the healed monkey corneas. PMID- 3840876 TI - Endothelial damage thresholds for retrocorneal Q-switched neodymium:YAG laser pulses in monkeys. AB - Laser pulses were focused within 1 mm of the rhesus monkey corneal endothelium using the Coherent Model 9900 laser at energies of 3, 6, 9, and 12 mJ. Sixteen slightly off-axis pulses were applied with no contact lens on the eye. Corneal damage was studied clinically and by scanning electron microscopy. Q-switched pulses of 12 mJ or less are not likely to damage the cornea if focused more than 0.75 mm from the endothelium. The retrocorneal focal distance for a 50% incidence of endothelial damage for 6, 9, and 12 mJ pulses was found to be less than 0.5 mm. For 3 mJ pulses, it was less than 0.25 mm. The severe early effect of suprathreshold pulses is edema of endothelial cells in a 0.2- to 0.6-mm diameter circular zone surrounding a small central pit through Descemet's membrane. At two months, irregular enlargement of endothelial cells surrounding and partially covering the persistent pit exists at sites of severe damage. The extent of the longer-term change is proportional to the severity of the original insult, but in no case was there clinically significant, persistent damage in the healed corneas. PMID- 3840877 TI - A study of intrathecal self-injection of morphine by rats, and the difficulties entailed. AB - Rats were chronically implanted with an intrathecal cannula, through which they were taught to self-administer morphine. After a training period of 2 weeks, their self-injection behaviour was studied before, during and after nociceptive stimulation. In response to nociceptive stimulation the rats increased their intrathecal self-injection of morphine. This effect is specific for morphine, since under the same conditions rats did not increase NaCl self-injection. Acute naloxone pre-treatment was shown to block the analgesic effect of intrathecal morphine administration. In the present experiments, morphine never induced convulsions or epilepsy. This suggests, first that the mode action of intrathecally injected morphine is located in the spinal cord and second, that the low dose (20-30 micrograms) of self-injected morphine is not sufficient to induce symptoms of convulsions or epilepsy. Our results show that the rats behave as if deliberately reducing the painful sensation. This experimental situation is therefore similar to the therapeutic situation in humans. It might, therefore, be used for preclinical evaluation of the efficacy of an analgesic drug. PMID- 3840878 TI - Acute pseudo-obstruction of the colon (Ogilvie's syndrome). Report of two cases and review of the literature. PMID- 3840879 TI - [Mosquitoes of the subgenus Edwardsaedes of the fauna of the Palaeoarctic region with a description of the larva of Aedes (Edw.) bekkui]. AB - Two species of the subgenus Edwardsaedes, Ae. (Edw.) pingpaensis Chang and Ae. (Edw.) bekkui Mogi, are spread in the Palaearctic region, the first one being known from China only and the second one from Japan and South Primorye, USSR. The name Ae. (Edw.) antuensis Su, Wang et Li, 1965 should be considered as a synonym of Ae. (Edw.) pingpaensis Chang, 1965; the larva of Ae. (Ochlerotatus) sticticus Mg. has been erroneously described by Su et al. (1978) as larva of Ae. antuensis. The differential diagnosis of the females, male genitalia, and larvae of mosquitoes Ae. pingpaensis and Ae. bekkui, is given. The description of the fourth stage larva of Ae. bekkui from the South Primorye is presented for the first time in the home literature. PMID- 3840880 TI - Protection by sucralfate against indomethacin induced gastric ulceration in the guinea pig. AB - In the management of rheumatic diseases, peptic ulceration associated with anti inflammatory drug therapy is a major problem and seriously limits the usefulness of these agents. In acute experiments with a guinea pig total gastric pouch preparation, gastric damage induced by the prostaglandin synthetase inhibitor indomethacin was shown to be enhanced by preliminary mucosal exposure to bile salts. In the present study, using the same preparation, we report that sucralfate, a basic aluminium salt of sucrose octasulphate, completely prevents the gastric damage observed in pouches exposed to sodium taurocholate and indomethacin. Prevention is shown not to relate solely to bile salt binding or to the weak antacid property of sucralfate. PMID- 3840881 TI - [Effect of macrophage stimulation on hepatocyte regeneration]. PMID- 3840882 TI - Bronchodilators and diuretics in children with bronchopulmonary dysplasia. AB - Pulmonary function tests (PFT) were obtained during the course of a self controlled study of six children aged 5 to 43 months who had moderate to severe bronchopulmonary dysplasia (BPD). Changes after the administration of intravenous (IV) furosemide (2 mg/kg), inhaled isoproterenol (0.2 cc, 1:200), inhaled atropine sulfate (0.05 mg/kg), and a placebo were assessed. The study indicated the furosemide and atropine significantly (P less than 0.05) increased dynamic compliance (CL) for the group. A decrease in total pulmonary resistance (RL) and work of breathing (W) was observed after isoproterenol, although the responses were not significant (P = 0.08 and P = 0.09, respectively). It was speculated that pulmonary edema and increased vagal tone may contribute to small airway dysfunction in children who have BPD. PMID- 3840883 TI - [Use of thymalin in the diseases of early infancy]. PMID- 3840884 TI - [Diagnostic importance of determining circulating immune complexes in autoimmune thyroiditis in children]. PMID- 3840885 TI - [Endocrine ophthalmopathy and autoimmune thyroid disease]. PMID- 3840886 TI - Evidence for common precursors but differential processing of VIP and PHM in VIP producing tumors. AB - To elucidate the biosynthesis of vasoactive intestinal polypeptide (VIP) and investigate the suggestion that the prepro-VIP contains another peptide designated PHM (the peptide with N-terminal histidine and C-terminal methionine amide) in its sequence, the concentration and molecular forms of immunoreactive VIP and PHM in 14 human VIP producing tumors (VIP-omas) were determined. Elevated quantities of both peptides were found in all tumor extracts but the concentration of PHM did not correlate with that of VIP and the ratio VIP/PHM varied from 0.5 to 8.5. Gel chromatography showed that in addition to peaks corresponding to VIP and PHM, two larger molecular forms with Kd values of 0.31 and 0.36 which displayed both VIP and PHM immunoreactivity were present. While the proportions between the various PHM molecular forms varied considerably, the relative contribution of the VIP immunoreactive peaks was rather constant from tumor to tumor. The molecular pattern was unaffected by protein denaturing with guanidine hydrochloride and cleavage of sulfide bonds with dithiothreitol. The findings indicate that VIP and PHM are co-produced in VIP-omas probably from common larger molecular forms and that differences in the post-translational processing between tissues exist. PMID- 3840887 TI - Cardiovascular effects of neuropeptide Y in the nucleus tractus solitarius of rats: relationship with noradrenaline and vasopressin. AB - The central haemodynamic effects of neuropeptide Y (NPY), both alone and together with either noradrenaline (NA) or vasopressin (AVP), have been investigated by microinjecting synthetic peptide into the nucleus tractus solitarius (NTS) of anaesthetized rats. NPY alone elicited dose-dependent changes in blood pressure (BP) and heart rate (HR); 470 fmol inducing a pressor response, and 4.7 pmol a fall in BP. The hypotensive response to 20 nmol NA was significantly modified by both simultaneous and prior injection of an ineffective dose (47 fmol) of NPY. Prior injection of a similar dose of NPY also modified the NTS pressor effect of 10 ng AVP. A relationship between the action of AVP and NPY in the NTS was further indicated by the finding that prior injection of an ineffective dose of AVP (1 ng) reduced the hypotensive response to 4.7 pmol NPY, and by the demonstration of contrasting effects of 4.7 pmol NPY in AVP-deficient Brattleboro rats compared to parent strain LE rats. These results, taken together with the recent localization of NPY-like immunoreactivity in the NTS, suggest a role for NPY in central cardiovascular control. In addition, NPY has been shown to exhibit functional interactions with both an amine neurotransmitter and a neuropeptide present in the NTS of rats. PMID- 3840889 TI - [Macro- and microscopic changes in damaged menisci of the knee joints]. PMID- 3840888 TI - Substitution of norleucine for methionine residues in a crustacean pigment dispersing hormone. AB - In order to evaluate the structural/functional roles of Met residues in an octadecapeptide pigment-dispersing hormone (PDH: Asn-Ser-Gly-Met-Ile-Asn-Ser-Ile Leu-Gly-Ile-Pro-Arg-Val-Met-Thr-Glu-Ala- NH2), first described as light-adapting distal retinal pigment hormone (DRPH) from Pandalus, three analogs were synthesized: Nle4-PDH, Nle15-PDH, and Nle4,15-PDH. When tested for melanophore pigment-dispersing activity in destalked Uca, all three Nle-analogs were more potent than unsubstituted PDH. Performic acid oxidation caused a marked loss of potency of PDH, Nle4-PDH, and Nle15-PDH. The analog Nle4,15-PDH was resistant to oxidation and displayed 6-fold higher potency than PDH. Thus Met4 and Met15 are not essential for the PDH activity. The oxidation-induced loss of activity of unsubstituted PDH may result from introduction of oxygen (in methionine sulfone) and a consequent conformational change in the octadecapeptide. PMID- 3840890 TI - Common eyelid and orbital problems. AB - Several pathologic processes can disturb the complex structures of the eyelids and orbital tissues and the muscles that enable their proper function. Some disorders, such as entropion and ectropion, are usually acquired in later years from laxity of supporting structures. Blepharoptosis has a range of causes, from aging to an intracranial aneurysm, and its severity varies, from mild to almost complete closure of the lid fissures. Graves' orbitopathy can produce lid retraction, lid lag, and proptosis and can cause vision-threatening conditions. Orbital cellulitis produces pain, swelling, proptosis, and redness of the lids and conjunctivae and, if severe, can compromise ocular motility and visual acuity. Early recognition of the specific disorder and prompt and adequate treatment are essential to spare the patient discomfort and ensure preservation of vision. PMID- 3840891 TI - Sexually transmitted diseases in homosexual men. PMID- 3840892 TI - Sexually transmitted diseases: an overview. PMID- 3840894 TI - Female reproductive organs and breast cancer mortality in New Jersey counties and the relationship with certain environmental variables. AB - Age-adjusted female reproductive organs and breast cancer mortality rates (all sites combined) were higher in 19 of 21 New Jersey counties than the U.S. national rates. Compared with national trends, New Jersey cervical cancer and corpus uteri rates have declined less than the national rate among all races. Ovarian and breast cancer rates have not changed over the years, a pattern similar to that of the nation. New Jersey cancer mortality rates during the period 1968-1977 that highly significantly (P less than 0.0005) exceeded national rates were cancers of the cervix in 2 counties among whites and in one county among nonwhites; of the corpus uteri and uterus not specified in 3 counties among whites; of the ovaries in 3 counties among whites; and of the breast in 10 counties among whites. The overall New Jersey cancer mortality significantly (P less than 0.0005) exceeded national rates for ovarian cancer among whites and nonwhites and for breast cancer among whites. Statistically significant and positive correlations were found between breast cancer mortality and chemical toxic waste disposal sites, annual per capita income, urbanization index, and population density among whites in 21 New Jersey counties. Ovarian cancer mortality was also significantly and positively correlated with annual per capita income, and negatively with birth defects. Cervical cancer mortality showed a significant negative correlation with annual per capita income and a significant positive correlation with birth defects and low birth weight among nonwhites in 21 New Jersey counties. PMID- 3840893 TI - Vaginal discharge. PMID- 3840895 TI - [Characteristics of the clinical course of diffuse toxic goiter]. AB - The authors describe rather rare clinical forms of diffuse toxic goiter with bradycardia, pretibial myxedema, the absence of ophthalmic sings and noticeable cachexy. All necessary investigations for more rational differential diagnosis are enlisted. A possibility of the development of the clinical picture of thyrotoxicosis in TTH producting hypophyseal adenomas, chorionepithelioma and hydatidiform mole is emphasized. PMID- 3840896 TI - [Surgical treatment of autoimmune thyroiditis]. AB - The authors used combined modality therapy including clinical, laboratory, x-ray, radiological, immunological and histological methods to diagnose autoimmune thyroiditis. Enlargement of the thyroid up to the 3-4 th degree, signs of compression or shift of the trachea and esophagus, the presence of nodes, progressive goiter growth and suspected malignant transformation served as indications for surgical intervention. Subfascial extirpation of the thyroid can be an operation of choice in surgical treatment of Hoshimoto's thyroiditis. A question of the time of surgical intervention cannot be considered completely solved. PMID- 3840897 TI - [Pulmonary surfactant in the expired air condensate of patients with respiratory tuberculosis]. PMID- 3840898 TI - Structure dependence of angiotensin tachyphylaxis and the mechanisms of saralasin like and sarmesin like antagonism. PMID- 3840899 TI - Cisapride increases gastric emptying without affecting small or large bowel transit. PMID- 3840900 TI - Sucralfate and gastric bicarbonate. AB - The effect of sucralfate treatment (3 g daily for 6 weeks) on gastric HCO3- secretion was investigated in 15 duodenal ulcer patients. After treatment a highly significant (p less than 0.01) increase in gastric bicarbonate output was found. It is suggested that the mode of action of sucralfate includes stimulation of gastric alkaline secretion. PMID- 3840901 TI - Oxygen transport: a simple model for study and examination. PMID- 3840902 TI - A microcomputer-based method for physiologically interpretable measurement of the rewarding efficacy of brain stimulation. AB - Determination of the function relating rate of pressing to the number of pulses in a train of fixed duration (the rate-frequency function) yields a physiologically interpretable measure of changes in the rewarding efficacy of the stimulation, because the number of action potentials in the reward-relevant first stage axons is directly proportional to the number of pulses in the train. We describe a system, based on a low cost microcomputer, which permits determination of 16-data-point rate-frequency functions in 4-6 animals simultaneously in less than 10 minutes. We give an empirical and theoretical justification for using the curve-shift measurement procedure in drug and lesion work, where the experimental treatments must be presumed to have substantial effects on performance factors. PMID- 3840903 TI - Isolation and hypoglycemic activity of ganoderans A and B, glycans of Ganoderma lucidum fruit bodies. PMID- 3840904 TI - Beating fantasies in a latency girl: their role in female sexual development. AB - Detailed clinical material is presented from the analysis of a latency girl whose inner life revolved around a series of beating fantasies. The clinical data support Freud's 1925 formulation that the perception of sexual differences initiates the oedipus complex in the girl. Whether a girl experiences vaginal sensations before puberty has been a controversial issue; in this girl vaginal sensations and contractions appeared prior to puberty. PMID- 3840905 TI - Responses of mouse lung to irradiation. 2. Levels of alveolar protein in lung lavage fluid following neutrons or X-rays. AB - Alveolar protein exudate is shown to exhibit a biphasic increase after irradiation. During the first 6 weeks after doses of between 5 and 28 Gy X-rays or 3.5 and 14 Gy neutrons, mean alveolar protein levels increase to about 4 times control levels. Over this period there was no suggestion of any dose-response nor of an RBE greater than 1. It seems probable that this response is unrelated to cell killing by radiation. After sublethal doses there was recovery from this first phase of leakage. However, although after 5 Gy X-rays this recovery was complete, after higher doses a second and greater increase in alveolar protein took place. After 10 Gy X-rays and 8 Gy neutrons this peaked at about 15 weeks post-irradiation and 20-30 times control levels. This second dose-dependent response corresponded with the times of animal death after doses close to the LD50. A comparison of these changes in alveolar protein exudate with previously published data on surfactant level suggests that the surfactant and protein responses are largely unrelated. PMID- 3840906 TI - Release and degradation of neurotensin during perfusion of rat small intestine with lipid. AB - The levels of neurotensin (NT) and its metabolite, the N-terminal octapeptide (NT1-8), identified by HPLC and measured by RIA, were increased in the hepatic portal circulation of the anesthetized rat during perfusion of the small intestine with a lipid solution, while levels of both peptides remained unchanged in the general circulation. There was no significant arteriovenous difference for NT or NT1-8 during saline perfusion of the small intestine. Plasma collected from the superior mesenteric vein during the infusion of [3H]NT into the superior mesenteric artery showed major peaks of radioactivity with the retention times of NT1-8 and NT1-11 on HPLC. Only 12% of the radioactivity recovered from plasma was intact NT. These studies demonstrate that chromatographically identified NT and its metabolite, NT1-8, are elevated in the portal circulation but not systemic circulation during lipid perfusion and that the small intestine may be both the site of release and metabolism of NT. PMID- 3840907 TI - [Review of the clinical usefulness of triiodothyronine uptake values]. PMID- 3840908 TI - Effects of acute hypoxia on heat production capacity in newborn lambs. AB - Severe hypoxia during birth results in a metabolic acidosis and depressed heat production capacity. The aetiology of the depressed heat production capacity is unknown. To investigate this problem newborn lambs were exposed to a 30 minute period of hypoxia by causing them to breathe room air diluted with nitrogen. Heat production capacity was subsequently estimated as summit metabolic rate. When summit metabolic rate was estimated at the end of the period of hypoxia a depression to 66 per cent of the control value was observed (P less than 0.01) but no depression was observed when the estimation of summit metabolic rate was delayed for 30 minutes. Hypoxia resulted in metabolic acidosis, hyperlactaemia and considerable increases in the plasma concentrations of adrenaline and noradrenaline. Summit metabolic rate was positively correlated with blood pH at the beginning of summit metabolism in lambs which had a pH value of less than 7.05. There were no other relationships between summit metabolic rate and blood composition. These results suggest that the poor heat production capacity found in lambs which have suffered hypoxia during birth may be directly related to acidaemia. PMID- 3840909 TI - Mechanical behavior of isolated lungs in hyperlipemic animals. AB - Altered pulmonary function has been reported by many authors in hyperlipemic animals and patients. Our experiments show that isolated lungs of rats rendered hyperlipemic by means of suitable diets display a significantly increased static compliance when pressure-volume (P-V) curves are analyzed during deflation following inflation with air. No differences are observed when P-V curves are obtained with saline. Furthermore the stability index calculated through the analysis of the deflation curve was significantly higher in rats treated with two different hyperlipidic diets (average stability index: 1.06 and 1.04 in the two treated groups, both significantly higher than the two control groups, 0.80 and 0.72, p less than 0.01 in both cases). The observed mechanical effects of hyperlipidemia on lung characteristics in rats show that altered surfactant properties and function play a major role in these experimental conditions. PMID- 3840910 TI - Overview of Chlamydia trachomatis infection and the requirements for a vaccine. AB - Chlamydia trachomatis is an important human pathogen. The development of vaccines designed to prevent C. trachomatis-associated morbidity would be highly desirable. In the developing world the major goal is the prevention of blindness due to trachoma; in industrialized societies and in some developing countries, the major goal is the prevention of chlamydial salpingitis and its consequences. In early trials of trachoma vaccine composed of a suspension of elementary bodies (the infectious particles), short-lived protective immunity was induced, but deleterious effects, i.e., hyperreactivity to infection, were also noted. Thus it is likely that separation of the protective from the sensitizing antigens and the development of a subunit vaccine will be necessary. Chlamydial virulence factors include the surface structures (presumably antigenic) that are responsible for specific attachment of the organism to a susceptible host cell, induction of phagocytosis by the host cell, or inhibition of phagolysosomal fusion. Serotype specific neutralizing antigens might also be candidate antigens. Purification of such subunit antigens from chlamydial particles is probably impractical. It is likely that genetic engineering will be required for the production of cloned antigens after such antigens have been identified. PMID- 3840911 TI - Interactions between spermatozoa and the crypts, cilia, and mucus of the cervix in the ewe. AB - In ruminants, minor cervical folds, commonly called crypts, temporarily store spermatozoa for a short interval of time between insemination and fertilization. However, the mechanism by which spermatozoa are transported to these crypts and subsequently to the uterus is not known. To study this problem, cervical tissue, which was removed from ewes that were naturally inseminated by rams at estrus, was examined with the scanning electron microscope to determine the physical associations that occur between the spermatozoa and the structural features of the cervix. The study indicates that the spermatozoa generally are not oriented parallel to the longitudinal axis of the cervix, exhibit no consistent association with the cervical cilia, and do not lie in any well defined channels formed by the cervical secretions. Alternatively, the majority of spermatozoa occur as isolated aggregations that lie in or near the shallow folds or crypts of the cervix. The vast numbers of spermatozoa in these aggregations and the lack of any common orientation suggest that some form of external stimulus, such as cervical contractions, might be responsible for the initial mass movement and distribution of spermatozoa in the cervix of the ewe. PMID- 3840912 TI - Scanning electron microscopy as an analytical tool for the study of calcified intrauterine contraceptive devices. AB - Within the endometrial cavity intrauterine contraceptive devices (IUDs) become encrusted with cellular, acellular, and fibrillar substances. Scanning electron microscopy was used to study the crust. Cellular material consisted mainly of blood cells and various types of bacteria. The fibrillar material appeared to be fibrin which was omnipresent in the crust and formed a thin layer immediately over the IUD surface. X-ray microanalysis of the acellular component of the crust revealed the presence of calcium. No other major peaks were identified. Near the IUD surface characteristic calcium phosphate crystals were present. Their microanalysis showed peaks for calcium and phosphorus. X-ray diffraction of the crust however, showed it to contain only calcite. It is through the use of scanning electron microscopy that calcium phosphate has been detected in the IUD crust and a fibrillar layer has been visualized on the IUD surface. This study further demonstrates the effectiveness of SEM analytical techniques in the area of biomedical research. PMID- 3840913 TI - [Acute hypercalcemia syndrome in sarcoidosis]. AB - In a 26-year-old patient admitted to the emergency ward with acute abdomen, all the symptoms--nausea, vomiting, indeterminate abdominal pain, constipation, renal failure, polyuria and polydipsia--could be explained by calcium intoxication syndrome. Investigation revealed generalized sarcoidosis. Under medical treatment with prednisone all the pathologic findings rapidly regressed. The pathogenesis of hypercalcemia in sarcoidosis, and particularly the disorder of vitamin D metabolism with raised levels of 1,25-dihydroxycholecalciferol, are discussed. PMID- 3840914 TI - [Food allergy. I. Pathogenesis, clinicaL aspects and diagnosis]. AB - Gut associated lymphoid tissue (GALT) and mucosa associated lymphoid tissue (MALT) form the pathophysiological basis for immune function of the gastrointestinal tract. The precondition for an immune response to food antigens is absorption through the mucosa. "M"-cells in the epithelial layer in Peyer's patches are specialized for antigen uptake. Foodstuff allergens either ingested or inhaled may cause, locally or systematically, a multitude of symptoms. All four allergic reaction mechanisms, according to the classification of Coombs and Gell, may occur alone or in combination. Due to the lack or reliable test procedures, allergic reactions to food often remain unrecognized or, on the other hand, are too often supposed. It is important to arrive at a clear definition of food allergies. Other causes of incompatibility to foodstuffs must be excluded, such as toxic effects, intolerance reactions to pharmacologically vasoactive or psychoactive substances in certain foods, and pseudo-allergic reactions and enzymopathies. Food allergies with type I reactions are easily recognized by means of a careful history and allergological examination, especially using scratch or prick tests with fresh food, RAST, and a carefully conducted elimination diet. None of the other available in-vitro test methods can replace the allergological examination. Some cases of food allergy are presented which demonstrate the often painful process from symptom to specific diagnosis. PMID- 3840915 TI - Cloning of a gene whose expression is increased in scrapie and in senile plaques in human brain. AB - A complementary DNA library was constructed from messenger RNA's extracted from the brains of mice infected with the scrapie agent. The library was differentially screened with the objectives of finding clones that might be used as markers of infection and finding clones of genes whose increased expression might be correlated with the pathological changes common to scrapie and Alzheimer's disease. A gene was identified whose expression is increased in scrapie. The complementary DNA corresponding to this gene hybridized preferentially and focally to cells in the brains of scrapie-infected animals. The cloned DNA also hybridized to the neuritic plaques found with increased frequency in brains of patients with Alzheimer's disease. PMID- 3840916 TI - Methodology and clinical significance of heparin cofactor II. Probable heparin cofactor II deficiency in a patient with cerebrovascular thrombosis. AB - HC II was functionally determined by thrombin inhibition in the presence of heparin in AT III-free plasma prepared by immunoadsorption on anti-AT III Sepharose 4B column. HC II antigen concentration was assayed using specific antibodies to HC II. Simultaneously, AT III was measured. Plasma levels of HC II and AT III were determined in 110 patients with thrombotic tendency and two patients with obstetric complications and DIC. Highly significant correlations between activity and antigen prove the suitability of the methods. Reduced levels of HC II to about 50% with normal AT III values were repeatedly found in one patient with thrombotic tendency. The course of AT III and HC II during the process of DIC suggests that HC II may function as a thrombin inhibitor reserve when AT III becomes subnormally low. PMID- 3840917 TI - Protein C deficiency in Austria. PMID- 3840918 TI - Protein C in thromboembolic disease. AB - Human protein C is the central protein of an important regulatory mechanism, as shown by the high incidence of thromboembolic complications in congenital deficiencies of protein C. Both abnormal molecules and half-normal levels of protein C antigen and activity have been found in patients with familial thrombotic complications. Newborn infants with congenital homozygous protein C deficiency develop catastrophic thrombosis (purpura fulminans) and will not survive beyond the neonatal period without protein C replacement. Individuals with systemic thrombosis have significantly decreased levels of protein C concomitant with the severity of the DIC. These studies suggest that protein C is important not only in the congenital deficiencies, but also in acquired deficiencies, such as during DIC or possibly the postsurgical hypercoagulable state. PMID- 3840919 TI - [Value of arthrography in the diagnosis of uncertain knee complaints. Experiences with lesions of the attachment zone of the meniscus]. PMID- 3840920 TI - [Gestagnost, a required part of the basic examination of women with tumors of the lung, kidney, liver and central nervous system]. PMID- 3840921 TI - Fetal alcohol effects--incidence and understanding in the Cape. PMID- 3840922 TI - Primary lymphoma of the cervix. A case report. AB - A case of primary lymphoma of the cervix, which illustrates the difficulty in histological diagnosis in such cases, is presented, and one method of treating the condition, namely by chemotherapy, is discussed. PMID- 3840923 TI - The incidence of thyroid carcinoma in patients with Hashimoto's thyroiditis and solitary cold nodules. AB - The reported incidence of thyroid carcinoma in Hashimoto's thyroiditis varies widely. For this reason the specific subpopulation of patients with Hashimoto's thyroiditis and a solitary cold nodule was analyzed. Between 1972 and 1984 we operated on 146 consecutive patients with solitary cold nodules and Hashimoto's thyroiditis. There were 47 carcinomas, for an incidence of 32%. The mean age of the 146 patients was 43 1/2 years (median 44 years), with 126 females and 20 males. There was a history of prior head and neck radiation exposure in 54 patients, with a 33% incidence of thyroid carcinoma. The 92 patients without a history of radiation exposure had a 31.5% incidence of carcinoma. The frequency of multicentricity (bilateralism) was 33% in the group that underwent radiation and 24% in the group that did not. To date, with a mean follow-up of 4.7 years, there have been no deaths and no evidence of recurrence. In conclusion, we report a 32% incidence of thyroid carcinoma in patients with Hashimoto's thyroiditis and a solitary cold nodule, with no apparent difference between the patients with or without a history of radiation exposure, although there was a higher incidence of bilateralism (33% versus 24%) in the carcinomas of the patients with a history of head and neck irradiation. We suggest that the operative management of these patients is total thyroidectomy for those with a history of head and neck radiation and thyroid lobectomy for patients with no history of radiation, followed by contralateral lobectomy if a carcinoma is demonstrated. PMID- 3840924 TI - [Body lesions with an accidental character]. PMID- 3840925 TI - Purification of human prothrombin fragment 1 using hydrophobic interaction chromatography on phenyl-sepharose. AB - Hydrophobic interaction chromatography on Phenyl-Sepharose for the purification of prothrombin fragment 1 is described. The results suggest that this method is both easier and more effective than the use of anion-exchange chromatography for the purification of fragment 1. In addition, the results presented here suggest that prothrombin has rather extensive hydrophobic properties. PMID- 3840926 TI - Comparison of a functional assay for protein C with two immunoassays. PMID- 3840927 TI - Histidine increases the frequency of chromosomal aberrations induced by the xanthine oxidase-hypoxanthine system in V79 cells. AB - The combined effects of the xanthine oxidase (XO)-hypoxanthine (HX) system and the various kinds of amino acids in Eagle's minimum essential medium on chromosomal aberrations were studied in Chinese hamster V79 cells. Among 13 amino acids tested, only histidine significantly increased the number of aberrant chromosomes and cytotoxicity in combination with the XO-HX system. This enhancing effect of histidine on chromosomal aberrations was dose-dependent at 0.063% - 0.25%; it was not affected by superoxide dismutase, but was strongly inhibited by catalase. PMID- 3840928 TI - [Preliminary experience with atracurium (Tracrium). A new neuromuscular blocker]. PMID- 3840929 TI - [The value of primary radiography of the knee joint in suspected injuries of the menisci and/or ligaments]. PMID- 3840930 TI - The nucleotide sequence of the env gene from the human provirus ERV3 and isolation and characterization of an ERV3-specific cDNA. AB - The nucleotide sequence of the env gene of a previously described human provirus (ERV3) has been determined beginning near the 3'-end of the pol gene and continuing through the 3'-LTR. Analysis of the nucleotide sequence revealed the presence of a long open reading frame of 1944 nucleotides that is capable of encoding a polypeptide that has characteristics of other retroviral glycoproteins and transmembrane proteins. These include the presence of seven potential glycosylation sites, a typical glycoprotein-transmembrane protein cleavage sequence, and amino acid homologies to the glycoproteins and transmembrane proteins of other retroviruses. Further, we have isolated an ERV3-specific cDNA clone from a library prepared from liver RNA of a 20-week human fetus. DNA sequence analysis of this clone revealed that it is identical to the ERV3 genomic clone in the 1110 nucleotides that were sequenced. PMID- 3840932 TI - [Effect of metoclopramide, papaverine and gastrozepin on the myoelectrical activity of the stomach and small intestine]. PMID- 3840931 TI - [Effectiveness of treating stenocardia patients with obzidan, corvaton and corinfar based on the indices of spirometric bicycle ergometry and of central hemodynamics]. PMID- 3840933 TI - [Diagnosis and treatment of thyroid diseases]. PMID- 3840934 TI - Efficacy of ivermectin against Trichinella spiralis in mice. PMID- 3840935 TI - Effect of heavy metals on cellular growth, metabolism and integrity of cultured Chinese hamster kidney cells. AB - The effects of CdCl2, Na2CrO4, NaAsO2 and NiSO4 on cultured Chinese hamster kidney cells were studied over a concentration range for 48 h. Release of lactate dehydrogenase, a parameter of cell viability, was not closely related to cell proliferation except for Na2CrO4. A better correlation was obtained between glucose consumption and lactate production, and cellular growth. When studying toxic effects of metals in cell-culture systems, metabolic parameters should be determined in addition to cell viability and cellular growth. The results indicate that Chinese hamster kidney cells in culture might be useful to study mechanisms of metal-induced toxicity. PMID- 3840936 TI - [New knowledge on the mechanism of action of oncogenes, carcinogens and anticarcinogens]. AB - In the development of a tumour a multistep process is existing, in which after activation of a cellular oncogen and after efficacy of a viral oncogenat first an avalanche-like increase of transforming, excluding the regulation of cell division proteins takes place. In many forms of tumours the transforming proteins possess the property of protein kinases and phosphorylize proteins situated in the area of the cell membrane. In some forms of tumours an enrichment in the area of the cell nucleus takes place. Secondarily, in the tumour cells frequently other oncogens are activated and an activation of further genes for the formation of growth factors or of proteins of the histocompatibility complex, respectively, occurs. Some transforming proteins themselves possess the properties of growth factors and of receptors, respectively, for the binding of such ones. Cocarcinogens activate the protein kinase C, e.g. the phorbol esters. Anticarcinogens influence the transcription, e.g. the vitamin A and the 1,25 dihydroxyvitamin D3. Vitamin A and analogous compounds increases the functional capacity of the immune defense. PMID- 3840937 TI - Interaction of M protein and RNP of fowl plague virus in vitro. AB - The ability of the fowl plague virus (FPV) M protein to form a complex with FPV RNP and to inhibit the RNP transcriptase activity in vitro depended on NaCl concentration and did not depend on the concentration of nonionic detergents. The results obtained indicate that the M protein-RNP links formed were of an electrostatic rather than a hydrophobic nature. As demonstrated using individual RNP components, vRNA and RNA-free protein structures, M protein formed complexes only with vRNA, and the complex formation was salt-dependent. Analysis of products formed in the in vitro system containing RNP of FPV in the presence of the M protein showed impairment in the transcription of all RNA segments. The degree of inhibition correlated with the size of a segment, transcription of high molecular weight RNA segments being inhibited significantly more than that of low molecular weight RNA segments. PMID- 3840938 TI - [Lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase in skeletal muscle. IX. The influence of the rate of thawing on activity and subcellular distribution in fast and slow frozen bovine muscle]. AB - Samples of bovine muscle (post rigor) were frozen at -30 degrees C at two different rates (1.27 min/degrees C and 13.10 min/degrees C) and thawed at different rates between 1.6 (22 degrees C) and 430 min/degrees C (0 degrees C). The activities of the mitochondrial enzymes lipoamide dehydrogenase, citrate synthase, and beta-hydroxyacyl-CoA-dehydrogenase were determined in the supernatant of the tissue homogenate in phosphate buffer (total activity) and in the press juice of the intact tissue (activity in the sarcoplasma). The rate of thawing did not show a significant influence on total enzyme activities. In most cases, however, slow thawing caused a greater release of the enzymes from the mitochondria into the sarcoplasmic fluid than fast thawing, this effect being apparently independent of the rate of freezing. The greater damage to mitochondrial membranes upon slow thawing cannot be due to a longer exposure of the muscle cell to increased ionic strength in the non-freezable part of the cell water at the "critical" temperature around -3 degrees C because freezing of muscle samples at -3 degrees C and incubating them at -3 degrees C for five days resulted neither in changes of the total enzyme activities nor in a release of the three mitochondrial enzymes. From these results it is concluded that the influence of thawing rate on the damage to muscle mitochondria is probably not due to ionic effects or to recrystallization phenomena in the ice phase. PMID- 3840939 TI - [Lipoamide dehydrogenase, citrate synthase, and beta-hydroxyacyl-CoA dehydrogenase in skeletal muscles. X. The influence of frozen storage of bovine and porcine muscle on activity and subcellular distribution]. AB - The influence of storage of bovine and porcine muscle at -20 degrees C for 12 months and of thawing on the total extractable activity and subcellular distribution (activities in the supernatant of a phosphate buffer extract and in the press juice of the thawed tissue) of the mitochondrial enzymes lipoamide dehydrogenase (LIPDH), citrate synthase (CS) and beta-hydroxyacyl-CoA dehydrogenase (HADH) was studied. The total activity of LIPDH decreased during frozen storage whereas the activities of CS and HADH did not change appreciably. From the increase of CS and HADH activities in the muscle press juice it was concluded that--additionally to the effect of freezing and thawing itself--frozen storage results in further damage to the inner membrane of muscle mitochondria, which may be recognized from the increased release of membrane-bound enzymes. In this respect porcine muscle mitochondria seem to be more sensitive than bovine muscle mitochondria. PMID- 3840940 TI - [Lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase of skeletal muscle. 9. Influence of frozen storage of musculature of sheep, game and poultry on activity and subcellular distribution]. AB - Frozen storage at -20 degrees C for three months and thawing of muscles from sheep, hare and deer, and of the breast and leg muscles from chicken and duck did not result in significant changes in the extractable total activities of the mitochondrial enzymes citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase; however there was a decrease in the total activity of lipoamide dehydrogenase except in the chicken leg muscle, where such a decrease did not occur. From the increase in the activities of the three enzymes in the muscle press juice it was concluded that - additionally to the effect of freezing and thawing itself - frozen storage results in further damage to the inner membrane of muscle mitochondria which is signalled by the release of membrane-bound enzymes. Chicken muscle mitochondria seem to be more stable against frozen storage of the tissue than the mitochondria in the muscles of the other species studied (including bovine and porcine muscle). PMID- 3840941 TI - [Reduction of the transfer of surface active agent residues in food]. AB - Surfactants used for cleaning and disinfection in food production and food processing can form residue on treated materials. Upon sequential contact of these materials with foods these foods may become contaminated. Different materials (steel, acrylonitrile rubber, polypropylene, polyamide, methyl methacrylate) were treated with aqueous solutions of dodecyl-trimethyl ammoniumchloride, a bactericidal quaternary ammonium compound, and stearyl alcohol oxethylate, a nonionic surfactant. The adhering amounts of surfactants were measured by a radio tracer technique. It was analysed, how much of the adhering surfactants could be removed with water depending on rinsing time, water temperature, flow velocity, and number of rinsing cycles. It has furthermore been determined to what extent adhering surfactants are rinsed off by milk and juice. PMID- 3840942 TI - [Results of endoscopy studies of the knee joint]. PMID- 3840943 TI - [Surfactant synthesis and lung maturity]. AB - Reported about synthesis, composition and function of surfactant. Because of the importance of functional lung maturity for fetal survival the prenatal prophylaxis of RDS has a great importance. Glucocorticoid treatment is recommended in view of the success and without alternative the. PMID- 3840944 TI - Contribution of defective sperm function to infertility. AB - The nature and significance of some biologically orientated tests of human sperm function is discussed by the Authors. In particular tests for motility and the fertilizing capacity of spermatozoa are examined, motility tests and the zona free hamster oocyte penetration test are particularly criticized. The Authors affirm that hamster oocyte tests carried out in the presence of A 23187 have shown to correlate with fertility in vivo and may be of critical value in decreasing the incidence of false negative scores. The data furnished by this test will provide a logical basis for discovering the aetiology of male infertility as well as devising techniques to both detect and treat these conditions. PMID- 3840945 TI - Assessment of the presynaptic effect of atracurium. Train-of-four and tetanic stimulation in in vitro preparations. AB - The present experiments were designed to study the effect of atracurium on the contractile responses produced by repetitive motor nerve stimulation and by depolarizing drugs in frog, chick and rat skeletal muscle-nerve preparations, using electrophysiological and neurochemical techniques. The presynaptic effect of atracurium was assessed using train-of-four (2 Hz) and tetanic stimulation (50 Hz) in isolated chick and rat neuromuscular junctions. A further measure of the presynaptic effect of atracurium was examined by studying its effect on the uptake of labelled choline, 3H-methylcholine, in the control preparations. The effect of atracurium on postjunctional contractile responses of the chick isolated biventer cervicis skeletal muscle was studied using cholinergic drugs such as acetylcholine and tetraethylammonium. The results indicated that in addition to its postjunctional competitive and non-depolarizing blocking effect, atracurium may have a prejunctional inhibitory action at the neuromuscular junction. Atracurium reduced all the contractile responses produced by both electrical and chemical stimulation. PMID- 3840947 TI - Massive discoid medial meniscus. A case report. AB - Only eight cases of massive discoid meniscus have previously been published in the English literature. Our case had a tear and was diagnosed by arthroscopy. PMID- 3840946 TI - Structural and histochemical study of the effect of 1,25-dihydroxyvitamin D3 on long-bone growth center in suckling mice. AB - The in vivo effects of 1 alpha,25-dihydroxyvitamin D3 [1,25(OH)2D3] on cellular structure and response, matrix metachromasia and mineralization have been studied in the epiphysis and growth plate of humeri in normal neonatal mice. A relatively low dose of the metabolite, 50 ng/kg body weight, significantly increased the overall size of humeral growth plate, the zone of proliferating cells and that of hypertrophic chondrocytes. The response of the tissue to the metabolite changed with the increase in dose administered so that it was only the zone of proliferation that still showed increases in size in comparison to untreated controls. 1,25 (OH)2D3 led to an increase in the metachromatic reaction of the cartilage matrix in the chondroblastic zone, and to marked increase in matrix mineralization in the hypertrophic zone. Qualitative changes were also noted in the structure of chondroblasts and hypertrophic chondrocytes. 1,25(OH)2D3 affected the osteoblastic and osteocytic populations of cells along the metaphysis and diaphysis of the humerus. High doses of 1,25(OH)2D3 brought about distinct atrophic changes in the above cells. Chondrocytes in the epiphysis were found to synthesize type I collagen and fibronectin. These findings indicate that excessive doses of 1,25(OH)2D3 in an intact growing animal affect the normal differentiative pathway of prechondroblasts and thereby affect long bone development. PMID- 3840948 TI - Myosin light chain kinases and myosin phosphorylation in skeletal muscle. AB - Myosin light chain kinases appear to exist as a family of tissue- and species specific isozymes. The skeletal muscle kinases, although differing widely in molecular weight among vertebrate species, are catalytically similar and antigenically related. The smooth muscle kinases are catalytically and antigenically distinct from the skeletal muscle kinases. The functional basis for the existence of myosin light chain kinase isozymes has not been determined. Phosphorylation of fast-twitch skeletal muscle myosin P-light chain occurs at physiologically relevant contraction frequencies and durations, and the extent of P-light chain phosphorylation correlates with enhancement of isometric twitch tension in fast-twitch muscle under a variety of experimental conditions. Phosphorylation of myosin P-light chain in vertebrate fast-twitch skeletal muscle may play a modulatory role in calcium regulation of muscle contractility. PMID- 3840949 TI - The biochemical pharmacology of CI-920, a structurally novel antibiotic with antileukemic activity. AB - CI-920 is a structurally novel, phosphate-containing polyene lactone antitumor agent isolated from a previously undescribed subspecies of Streptomyces pulveraceus cultured from a Brazilian soil sample. CI-920 was active against murine leukemia P388, and highly active and curative against L1210 leukemia in vivo. CI-920 was less active or inactive against the murine solid tumors tested. Daily administration for five to nine days was more effective against L1210 leukemia than a single dose or doses every four days. Given three times daily for five days, CI-920 was more toxic and less active. CI-920 had similar activity intravenously and intraperitoneally. Oral administration was inactive and nontoxic. Subcutaneous treatment was less effective and more toxic. Structure activity relationship studies showed that the phosphate group was essential for antitumor activity in vivo and in vitro. Hydrolyzing the lactone ring also resulted in loss of antitumor activity, as did acetylation of the 6-hydroxyl group. Hydroxylation at the 5-position of the lactone ring resulted in partial retention of antitumor activity, but in greater toxicity to mice. Removal of the 13-hydroxyl group resulted in retention of high antitumor activity with approximately three-fold improvement in dose-potency. CI-920 is not cytotoxic to prokaryotic cells. CI-920 causes inhibition of biosynthesis of RNA and DNA in intact L1210 cells. Protein synthesis is also inhibited at higher drug concentrations. The inhibition of nucleic acid synthesis is not an antimetabolite effect, since pools of ribonucleoside triphosphates and deoxyribonucleoside triphosphates are not depleted. CI-920 does not cause DNA strand breakage, as measured by alkaline elution, and is not mutagenic in the Ames test at concentrations up to 200 micrograms/ml. CI-920 does not cause direct inhibition of RNA polymerase or DNA polymerase in permeabilized cells. It is possible that CI-920 must be metabolically activated within the target cells; alternatively it may interact with a component of chromatin other than DNA or the polymerases. Flow cytometry studies showed that growth-inhibitory levels of CI-920 caused accumulation of cells in the G2+M region. Higher drug concentrations caused an S phase block. CI-920 is an inhibitor and irreversible inactivator of reduced folate membrane transport, and appears to enter cells by this receptor. L1210 cells selected for resistance to CI-920 are cross-resistant to methotrexate, and deficient in reduced folate transport.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3840950 TI - Effects of nitrogen mustard on potassium transport systems and membrane structure of Ehrlich ascites tumor cells. AB - By Ehrlich ascites tumor cells 86Rb+ has been shown to be a suitable tracer for K+-transport. Sixty percent of the total 86Rb-uptake into these cells is ouabain inhibitable, 30% is sensitive to furosemide and 10% enters the cells by ouabain and furosemide-insensitive systems. N-Mustard inhibits both the ouabain-sensitive and the furosemide-inhibitable systems. The uptake which is resistant to both inhibitors is not affected by the alkylating drug. At N-mustard concentrations below 10 microM, the reduction of the Rb-uptake is predominantly due to the inhibition of the furosemide-sensitive transport. Higher concentrations are required before a significant inhibition of the ouabain-sensitive transport can be observed. The dose response curve of the furosemide-sensitive transport--not, however, of the ouabain inhibitable pump--corresponds to the dose response curve for the antiproliferative activity of N-mustard. The recovery of the furosemide sensitive transport after a single exposure to N-mustard is relatively slow and- in contrast to the repair of DNA cross-links--is characterized by an initial 4-hr lag period. Furosemide alone does not interfere with cell multiplication. The inhibition of the transport system alone does, therefore, not explain the antitumor activity of N-mustard. The effect is discussed as a marker for membrane lesions after exposure to alkylating agents. In order to investigate the influence of N-mustard on membrane structure, membranes were labelled with diiodofluoresceiniodoacetamide. Anisotropy curves obtained from time-dependent depolarization of delayed fluorescence indicated a mustard induced immobilization of membrane constituents. Lateral diffusion of lipophilic probes was determined by following the quenching of fluorescence of pyrene by cetylpyridinium. The latter studies yielded no evidence for a change in membrane lipid fluidity. The data are interpreted as the results of cross-links of membrane proteins by the bifunctional alkylating agent. PMID- 3840951 TI - Reproducibility of left ventricular area and volume measurements using a computer endocardial edge-detection algorithm in normal subjects. AB - The variability of serially recorded 2-dimensional echocardiograms in normal subjects was determined. During a 2-week period, 10 normal subjects underwent echocardiography 5 times, in 2 laboratories, with use of different ultrasonographs. The video recordings were analyzed using a computer image analysis system (Quantic 1200) to provide standardized left ventricular short axis areas and area ejection fraction (EF). Left ventricular volumes and volume EF were calculated. The 95% confidence limits of the percent difference for end diastolic area and volume between 2 samples in a given subject were +/- 16.8 and +/- 16.7%, respectively. The limits for end-systolic area and volume were +/- 15.8 and +/- 17.0%, respectively. The 95% confidence limits for differences of area and volume EF between 2 recordings were +/- 12.8 and +/- 9.7%, respectively. No correlation was found between clinical grade (image quality) and the variability of area measurements. A good correlation (r = 0.98) was found between area and volume EF for any given subject over the 5 observations. These confidence limits are narrower than those previously recorded. PMID- 3840952 TI - Inner acrosomal membrane of mammalian spermatozoa: its properties and possible functions in fertilization. AB - The inner acrosomal membrane (IAM) develops during the spermatid stage of differentiation as that portion of the Golgi-derived acrosome granule that tightly associates with the condensing sperm nucleus. In some mammalian species, an electron-dense proteinaceous material accumulates between the IAM and the nuclear envelope, collectively comprising the "perforatorium." Evidence, including its partial purification and its structural resistance to detergents and sonication, suggests that the IAM is an unusually resiliant membrane. Dense paracrystalline arrays of intramembranous particles, a lack of lectin-mediated receptor modulation, and its lack of participation in sperm-egg fusion suggest that the IAM lacks the same degree of fluidity as the egg surface plasmalemma. Observations using monoclonal antibodies, however, suggest that some specific antigenic modulations may be possible within the IAM. Its structural rigidity is of obvious mechanical value during sperm penetration through the zone pellucida. An additional role as a scaffold for putative zona lysin material remains controversial. Biochemical evidence suggests that acrosin, for example, is not entirely soluble and that some remains sperm-associated, depending on the conditions of acrosome disruption. Nevertheless, morphological studies do not agree on acrosin's specific localization to the IAM. Currently there is only very limited information concerning the localization of the other acrosomal enzymes to the IAM. Another possible role for the IAM in some species may be in recognizing the zona pellucida. Evidence for this derives from the observation that fucoidin, a fucose heteropolysaccharide, inhibits guinea pig sperm-zona binding, and bound fucoidin can be localized to the IAM and equatorial regions of the living acrosome-reacted spermatozoa. Finally, the IAM may have a role in early recognition/adhesion with the colemma. PMID- 3840953 TI - Non-Hodgkin's lymphoma and membranous nephropathy in mixed connective tissue disease. AB - A 60-year-old woman with a diagnosis of poorly differentiated lymphocytic lymphoma presented with nephrotic syndrome. Her clinical picture and serological studies were consistent with the diagnosis of mixed connective tissue disease (MCTD). Renal biopsy demonstrated the changes of membranous nephropathy by light, immunofluorescence and electron microscopy. Treatment with corticosteroids and cyclophosphamide had no effect on the proteinuria, and she demonstrated progression of renal failure. This patient demonstrates that the lymphadenopathy associated with MCTD may be of a separate malignant origin. The treatment of MCTD may not alter the course of renal disease, and renal failure may ensue in patients with MCTD. PMID- 3840954 TI - Total ossicular replacement with a porous ultra-high molecular weight prosthesis. AB - A short review of techniques and materials in treating totally disabled ears is presented. Basic principles to be observed in dealing with these problems are discussed and personal experiences with the Plastipore total prosthesis are given. Forty-six cases are reviewed with comments on the functional results achieved. Under certain circumstances (no inflammation, tympanic drum in place, and good tubal function) the use of the Polycel total prosthesis is highly recommended. PMID- 3840955 TI - Extrarenal handling of phosphate: effect of thyroparathyroidectomy, 1,25 dihydroxycholecalciferol, and dietary calcium. AB - It is known that 1,25-dihydroxycholecalciferol [1,25(OH)2D3] mobilizes inorganic phosphate (Pi) from gut and bone, thus increasing the entry of Pi into the extracellular space (ECS). In this work, we have investigated whether 1,25(OH)2D3 could also facilitate the net exit of Pi out of this pool into certain soft tissue and/or bone compartments in thyroparathyroidectomized (TPTX) rats. Sham operated, TPTX, and TPTX rats treated with 1,25(OH)2D3 (26 pmol/day ip for 1 wk) were infused with a known amount of Pi over a given time. The amount of Pi excreted in the urine in excess of base-line values and the rise of the phosphatemia ([Pi]p) were measured. The difference between these two parameters corresponded to the net retention of infused Pi in the whole animal (RAPi) for a given rise in [Pi]p. The results show that RAPi was markedly diminished in TPTX as compared with sham-operated animals. This decrease could be corrected by 1,25(OH)2D3 treatment. Chronic reduction in the level of calcemia in TPTX 1,25(OH)2D3-supplemented rats as induced by decreasing dietary Ca intake also diminished RAPi. These effects could not be ascribed to the known actions of the experimental maneuvers on the renal excretion of Pi. Since infusions were chosen to obtain similar rises in [Pi]p and started from same levels of [Pi]p in animals of the same weight, the differences in RAPi were not due to variation of Pi retention in the ECS.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840956 TI - [Software for anesthesia-intensive care]. PMID- 3840957 TI - [Survey of the role of computerization in departments of anesthesia-intensive care]. PMID- 3840958 TI - [Computerization of an anesthesia-intensive care unit in urology. Apropos of a recent experience]. PMID- 3840959 TI - A computer program to prepare and answer multiple choice questions. AB - A computer program to develop files of multiple choice questions for examination and teaching purposes is described. The program enables an examiner to prepare and modify up to 50 short answer questions with either a single or multiple correct answer format, and allows one to review the students answers individually or collectively, updating the item discrimination and difficulty indices each time a student performs the test. It also provides the option of answering the question file with or without review of the correct answer and reference. PMID- 3840960 TI - Determination of 5-aminolevulinic acid in biological samples by high-performance liquid chromatography. AB - 5-Aminolevulinic acid (ALA), the common precursor of all naturally occurring tetrapyrroles, forms a stable condensation product with 2-amino-3 hydroxynaphthalene which can be identified by its fluorescence. Separation of the compound by reversed-phase high-performance liquid chromatography on RPC-18 columns allows its detection down to the picomolar range and can be successfully applied for ALA analysis in small biological samples. The reaction product of ALA with 2-amino-3-hydroxynaphthalene has been synthesized and characterized. PMID- 3840961 TI - Teratogenic effects of the organophosphate insecticide dicrotophos (Bidrin): histological characterization of defects. AB - White Leghorn chicken eggs, specific pathogen free, were treated with the organophosphate insecticide dicrotophos and the early defects thus induced were characterized histologically. Eggs were incubated for 24, 48, 72, or 96 hr, injected with doses of dicrotophos ranging from 250 micrograms to 2.0 mg per egg, and observed after an additional 48 hr of incubation. Treated embryos displayed general developmental retardation as well as unilateral retardation of the cranial sense organs, the youngest embryos being most severely affected. Many embryos injected with insecticide at 24 hr, and all but one injected at 48 or 72 hr, displayed notochordal folding, usually restricted to the cervical region; most of these also showed deformities of the adjacent spinal cord. Other defects, seen on a less consistent basis, included branching of the neural canal in the lumbar region, bifurcation of the neural epiphysis, deformation of the lens vesicle, and distention of the major blood vessels. The incidence and severity of epiphyseal, lens, and vascular defects were greatest among embryos treated at 24 hr, whereas notochordal and both types of neural defects were greatest among those treated at 48 hr. The incidence and severity of the abnormalities diminished with increasing age such that by 96 hr the only defect noted was a weak notochordal folding in one embryo. To a lesser extent, incidence and severity were dose-related also. Histological similarities between embryos displaying vascular distention and recently dead treated embryos suggested that this abnormality is a precursor to death.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3840962 TI - Experience with an elemental diet (Vivonex). AB - Six patients with intractable atopic dermatitis completed this study which consisted of a baseline week, 1 to 2 weeks on an elemental diet, then sequential specific food additions. Symptom/sign scores, total eosinophil counts, and IgE and IgG4 radioimmunoassays for wheat alpha-gliadin, bovine serum albumin, beta lactoglobulin, and egg white were carried out as part of the protocol. Symptom/sign scores improved in five of six patients, some dramatically. Total eosinophil counts generally dropped after a week on the elemental diet and then increased as foods were added to the diet. The elemental diet used (Vivonex) appears to be beneficial in the management of at least some adult patients who have severe atopic dermatitis. PMID- 3840963 TI - [Modeling and BASIC program for the kinetics of inhalation anesthetic agents]. AB - The pharmacokinetics of inhaled anaesthetics has been well described by Eger's model using a monoalveolar lung with continuous alveolar ventilation and four extrapulmonary compartments defined by their blood supply and anaesthetic solubility. The model is presented with its equations. A Basic microcomputer programme is proposed for this model: expected concentrations of anaesthetic in various conditions of administration, ventilation or cardiac output are shown, such as the uptake and distribution of nitrous oxide during anaesthesia. Different inhaled anaesthetics were compared for induction and recovery times in standardized conditions of administration. PMID- 3840964 TI - [Respiratory depression after intrathecal injection of morphine: value of in situ naloxone]. AB - A case of delayed respiratory depression following an intrathecal injection of hyperbaric morphine hydrochloride is reported. This injection was made during a lumbar myelography in a 60 year old patient suffering from metastatic epiduritis unrelieved by oral or parenteral drugs. The differences in densities between the CSF, hyperbaric opiate solution and contrast medium explain the migration of the morphine hydrochloride from the lumbar thecal space to the basal cisternae, giving a fall in the responsiveness to CO2 of the brain stem respiratory centres. Parenteral naloxone did not reverse this ventilatory depression. Only the myosis and the analgesia disappeared. After 16 h of various attempts of reversal by parenteral injections, an intrathecal injection of naloxone was tried. This small dose (0.1 mg), given intrathecally, resulted in a prompt return to normal of respiratory function. PMID- 3840966 TI - Evaluation of computer hardware. PMID- 3840965 TI - Anthelmintic activity of ivermectin against immature gastrointestinal nematodes of sheep. AB - Twenty-four lambs of mixed breeding with mixed experimental infections of Haemonchus contortus, Ostertagia circumcincta, Trichostrongylus axei, and T colubriformis were allotted to 4 groups. One group (control) was given the vehicle propylene glycol, and the others were given 100, 200, or 300 micrograms of ivermectin/kg of body weight by mouth. Twelve days after treatment, the sheep were necropsied. The compound was greater than 99% effective against immature stages of 4 nematode species at all dosages, except at the 100 micrograms/kg dosage, where efficacy was 96% against H contortus. PMID- 3840967 TI - [High perinatal mortality in the Nord/Pas-de-Calais region: tentative interpretation]. PMID- 3840968 TI - [Filing in a radiology department: value of a microcomputer]. PMID- 3840969 TI - Tamoxifen and ovarian differentiation in birds. PMID- 3840970 TI - Initiation of production of anti-mullerian hormone by the fetal gonad. PMID- 3840971 TI - Amniotic bands in connective tissue disorders. AB - Amniotic bands are described in two children with Ehlers-Danlos syndrome type IV and in one with severe osteogenesis imperfecta. Since the basic defect in both of these disorders rests in collagen, which constitutes the main component of the load bearing amnion, it is proposed that these cases provide further insight into the pathogenesis of amniotic bands. PMID- 3840972 TI - Marfan's syndrome presenting as an intrapartum death. AB - A rare case of Marfan's syndrome presenting as an intrapartum death is described. Recognisable mitral valve lesions were present. PMID- 3840974 TI - Thyrotoxic silent thyroiditis: a geographic puzzle. PMID- 3840973 TI - [Risk of infection in untimely rupture of fetal membranes]. PMID- 3840975 TI - Frequency of silent thyroiditis. PMID- 3840976 TI - [Lactobezoar in an infant]. AB - The authors report a new case of lactobezoar in a 45 day-old infant. Vomiting was the presenting sign. The diagnosis was made using radiologic examination of the gastro-intestinal tract. Medical treatment (digestive rest and parenteral rehydration) resulted in a favourable outcome. The factors favouring such a situation and its management are analysed. PMID- 3840977 TI - Absence of delta antigen in a series of needle biopsies of chronic active hepatitis. PMID- 3840978 TI - Electron microscopy continued. PMID- 3840979 TI - Accuracy of creatinine results reported by participants in the CAP Chemistry Survey Program. AB - This report summarizes the creatinine data reported by over 6,000 participants in the 1982 to 1983 College of American Pathologists Chemistry Survey Program. Participants analyzed lyophilized serum samples on a quarterly basis. The most widely used methods employed the kinetic alkaline picrate reaction. Selected samples also were analyzed at the National Bureau of Standards using an isotope dilution-mass spectrometry definitive method. The participant mean results of each method principle group showed positive biases to the definitive values. The kinetic alkaline picrate and enzymatic method groups had the least biases to the definitive values. Excellent correlations between these two method groups and the definitive values were demonstrated. The consensus mean values of these two method groups would provide reliable target values for creatinine in survey samples. Interlaboratory precision improved significantly in each method group as the creatinine concentration increased. PMID- 3840980 TI - Malignant lymphoma with primary presentation in the spleen. A study of 20 patients. AB - We describe 20 adult patients with malignant lymphoma with primary presentation in the spleen. The most common presenting symptoms were fever, malaise, and weight loss. Physical examination revealed prominent splenomegaly without palpable lymphadenopathy. Small lymphocytic lymphoma was the most frequent histologic type (11/20), followed by large cell lymphoma and mixed cell lymphoma (3/20 each). Bone marrow involvement was found in ten of 17 patients. At laparotomy, lymph node involvement, usually retroperitoneal, was found in six of 13 patients. There was liver involvement in seven of 15 patients. Follow-up has been relatively short, with an average of 24 months (range, one to 48 months). Four patients died as a result of progressive disease, one died of sepsis after splenectomy, and one died two years after diagnosis of a stroke. The prognosis in primary splenic lymphoma appears to be similar to that in nodal lymphoma. PMID- 3840981 TI - Embryonic implantation in carcinoma of the endometrium. AB - We recently encountered a patient in whom placental implantation occurred directly in carcinoma of the endometrium. At the time of surgery for a presumed tubal pregnancy, the 33-year-old patient was discovered to have bilateral ovarian tumors that were histologically identical to the endometrial neoplasm. PMID- 3840982 TI - Hemorrhage in cardiac conduction tissue in premature infants. AB - Six premature infants had hemorrhages that were limited to cardiac conduction tissues. Obstetric complications occurred in each; four were growth retarded, and four had perinatal asphyxia. Two babies survived beyond one week. Four survived less than 24 hours. Bradyrhythmias occurred in four. Extracardiac lesions included infections and renal failure in two infants, hyaline membrane disease in one, hypoplastic lungs in two (one with renal agenesis and placental amnion nodosum), and placental villous edema in two. Cardiac hemorrhage occurred in sinoatrial nodes (n = 1), atrioventricular nodes (n = 3), atrioventricular bundles (n = 3), left bundle branches (n = 5), and right bundle branches (n = 3). The lesions were macroscopic in five cases. These cases suggest that neonatal cardiac conduction tissues are vulnerable to hemorrhage, particularly if associated with perinatal insults. Such lesions may account for some idiopathic dysrhythmias in surviving babies. PMID- 3840983 TI - Idiopathic hydronephrosis. Light microscopic features and pathogenesis. AB - A histological study of surgical specimens of idiopathic hydronephrosis demonstrated an abnormal muscle arrangement at the ureteropelvic junction in 18 of 26 cases. We believe this abnormality to be the cause in these cases. At this junction, the muscle bundles, instead of displaying the normal interwoven (braided) pattern, are arranged into an outer circular and an inner longitudinal layer. This abnormal muscle arrangement can be attributed to local failure of the physiological uncoiling during growth and development. PMID- 3840984 TI - Computerized interactive morphometry. A study of malignant mesothelioma and mesothelial hyperplasia in pleural biopsy specimens. AB - A morphometric study of 11 pleural malignant mesotheliomas and 11 pleural reactive mesothelial proliferations is reported. Pleural biopsy specimens of these lesions were studied with a new system of video-based computerized interactive morphometry that allows the comparison of real-time images of nuclear profiles with computer-generated graphic standards for the purpose of estimating their diameters. Malignant mesotheliomas had nuclear profile diameters (NPDs) ranging from 4 to 14 micron and a mean NPD of 9.6 +/- 0.5 micron. Reactive mesothelial proliferations had NPDs ranging from 4 to 12 micron, but exhibited a significantly smaller mean NPD of 6.4 +/- 0.2 micron. The potential technical advantages of computerized interactive morphometry over other morphometric methods are discussed. PMID- 3840985 TI - The histopathologic spectrum in Mycobacterium marinum infection. AB - Review of nine culture-positive cases of Mycobacterium marinum infection revealed a broad range in the histopathologic features of lesions produced by this organism. Four synovial lesions and five cutaneous infections were observed. A range of inflammatory changes were seen in both synovial and skin lesions, varying from mostly acute inflammation with suppuration to a more chronic process with numerous, well-formed granulomas. Organisms were observed in the biopsy sections of only one of the nine cases. Therefore, culture of the biopsy tissue at 30 degrees C is crucial in establishing the diagnosis. These cases emphasize the importance of considering mycobacterial infection and performing cultures even when granulomatous changes in the synovium or skin are subtle. PMID- 3840986 TI - Spontaneous rupture of the spleen due to acquired immunodeficiency syndrome in an intravenous drug abuser. AB - A case of spontaneous rupture of the spleen is described in a 25-year-old woman with a history of intravenous drug abuse. At autopsy the spleen and the lymph nodes were soft, slightly enlarged, and markedly congested. They showed reactive follicular hyperplasia with increased cellularity and prominent vascularity of the red pulp and the interfollicular tissue. The postmortem serum was positive for antibodies to human T-cell lymphotropic virus type III. Other serologic tests were negative, including heterophile antibody test, test for antibodies to Epstein-Barr virus, and toxoplasmosis. PMID- 3840987 TI - Rapid calcification of the bovine pericardial valve in adolescence. Critical aortic stenosis, hemolytic anemia, and quantitative renal hemosiderosis. AB - A 16-year-old boy developed marked calcific stenosis of an Ionescu-Shiley valve that was implanted in the aortic position 42 months before his sudden death. Renal hemosiderosis caused by intravascular hemolysis was quantitated by atomic absorption spectrophotometry. The accelerated calcification of the bovine pericardial valve in our patient supports the view that, in general, xenografts should not be used in adolescents. Frequent follow-up evaluations are imperative in young patients who receive these valves to avoid the irrevocable progression of valvular stenosis and hemolytic anemia. PMID- 3840988 TI - Squamous cell carcinoma of the uterine cervix subsequent to amebiasis. AB - We studied the development of a well-differentiated squamous cell carcinoma of the uterine cervix five years after cervical infection with Entamoeba histolytica by documenting the findings of specimens obtained by repeated biopsies in a 69 year-old woman. To our knowledge, this is the first report of a malignant neoplasm of the uterine cervix subsequent to amebiasis. Amebiasis superimposed on malignant neoplasms of the female genital tract has been reported before. We raise the question of a possible causal relationship between amebiasis and subsequent squamous cell carcinomas of the cervix. PMID- 3840989 TI - Cholesterol granulomas in lymph nodes draining a benign ovarian neoplasm. AB - A 69-year-old woman underwent a hysterectomy and bilateral salpingo-oophorectomy for a 20-cm right ovarian tumor. Multiple peritoneal and lymph node biopsy specimens were obtained to determine the clinical stage. Despite the surgeon's concern of malignancy, pathologic examination demonstrated a benign mucinous cystadenoma. Periaortic and external iliac lymph nodes showed an unusual granulomatous reaction, with multinucleated giant cells surrounding cholesterol like clefts. Analysis of cyst fluid from the ovarian tumor revealed high concentrations of protein and lipid; the lipid component was predominantly free cholesterol (0.61 mumole/mL) and phospholipid (0.225 mumole/mL). We speculate that fluid from the ovarian neoplasm drained into regional lymph nodes, causing this unusual granulomatous response. PMID- 3840990 TI - [CNS pathology in hereditary syndromes of congenital developmental defects]. AB - Analysis of the incidence and diagnostic importance of the congenital central nervous system (CNS) defects in 334 children with multiple congenital developmental defects (MCDD) dying under 1 year allowed the author to distinguish 4 groups of defects according to their informative value for establishing the nosological diagnosis: defects of a high, moderate, small informative value and noninformative ones. Special microscopic study of the CNS performed in 116 stillborns and children of the first year of life with various MCDD showed the disturbance of main morphogenetic processes (mitotic cell activity, cell migration, differentiation and maturation) as a basis of the observed pathological conditions. General rules of the CNS developmental defects in chromosomal and non-chromosomal syndromes may point to the common routes of the genetic material realization. PMID- 3840991 TI - [Clinico-morphological characteristics of thymomegaly]. AB - 48 autopsy cases of thymomegaly in children up to 14 years and in adults from 18 to 55 years are studied. The patients died either from the acute or chronic infectious diseases resistant to the therapy or suddenly during or several hours after the diagnostic manipulations, small surgical interventions. Analysis of clinical data and morphological immunohistochemical and ultrastructural studies of the thymus and organs of the immune and endocrine system showed the thymomegaly in the majority of cases to be a local manifestation of the endocrine immune deficiency syndrome. Primary (congenital) and secondary (acquired) thymomegaly are to be distinguished. A primary thymomegaly occurs in children and adults having congenital pluriglandular endocrinopathy with hypocortisism as well as an adrenal hypo- or aplasia with an antigenic stimulation. A secondary thymomegaly occurs in children of the first year of life and reflects the first phase of the thymic response in the activation of the immune T-system predominantly prolonged due to the immature state of the hypothalamico hypophyseal-adrenal system. In the adults secondary thymomegaly occurs in cases of the acquired endocrinopathy with hypocortisism. PMID- 3840992 TI - Risk of basilar membrane perforation by intracochlear electrodes. AB - Insertion of intracochlear electrodes may damage the basilar membrane, the stria vascularis and adjacent structures. When electrodes were placed in human temporal bone specimens, perforations were shown to be independent of the type of implant used, the depth of insertion or the use of a lubricating agent. Helical electrode reinforcements and failure to enlarge the round window frame increase the risk of damage. Perforations are invariably localized at a distance of about 7-14 mm from the round window and occur at the site where the curvature of the basal turn is greatest. PMID- 3840993 TI - Early history of bovine brucellosis eradication in Australia. AB - The first Australian bovine brucellosis eradication campaign on a state-wide basis was initiated and established in Tasmania. The procedures involved in drawing up a suitable scheme together with a summary of the difficulties encountered in setting up and operating the scheme are described, leading to the successful eradication of brucellosis from Tasmania. Our observations that milk was not a major factor in the transmission of brucellosis infection from cattle to man are recorded. Recognition is accorded to veterinarians, some eminent in the profession, who, in the absence of Australian research into the disease, gave freely of their advice in helping to pioneer the eradication program. Within one year of commencing the scheme 4 herds had been accredited; by 3 years 85 herds had been accredited. PMID- 3840994 TI - The efficacy of ivermectin against larvae of the screw-worm fly (Chrysomya bezziana). AB - An in vitro technique for screening systemic insecticides against larvae of the screw-worm fly, Chrysomya bezziana is described. Susceptibilities of screw-worm larvae of different ages to ivermectin (MK-933) were determined. Based on 24 h larval mortality, the LD50 of 1-,2-,3-,4- and 5-day larvae was 0.01, 0.02, 0.03, 0.2 and 0.4 ppm of ivermectin. LD50 based on adult emergence following treatment of 4- and 5-day larvae was 0.02 and 0.05 ppm. The LD99.9 for 4-day larvae based on 24 h larval mortality and adult emergence was 11.0 and 0.15 ppm respectively and for 5-day larvae, was 44.3 and 0.4 ppm respectively. Pen and field trials with cattle infested with screw-worm fly demonstrated the potential of ivermectin as a systemic insecticide. Dosages of 50, 100 and 200 micrograms/kg, of ivermectin administered subcutaneously to experimentally infested cattle gave complete control for 6, 12 and 14 days respectively. Ivermectin at 200 micrograms/kg caused 100% mortality of screw-worm larvae up to 2 days old at the time of treatment with 70, 64 and 21% mortality of 3-, 4- and 5-day old larvae at the time of treatment. The residual protection from a single dose of 200 micrograms/kg was 16 to 20 days. When bull calves were treated with ivermectin at a dose of 200 micrograms/kg at the time of castration and branding, none of the 77 treated animals sustained a screw-worm strike in the scrotal area compared with 47 strikes (44%) in the 106 control cattle. PMID- 3840995 TI - Subcutaneous filariasis (Pelecitus sp.) in a yellow-collared macaw (Ara auricollis). AB - Clinical manifestations of subcutaneous filariasis in a yellow-collared macaw (Ara auricollis) included lameness induced by subcutaneous nodule formation, which was attributed to the presence of the filarial parasite Pelecitus sp. Following anthelmintic and corticosteroid therapeutic failure, the problem was resolved by surgically removing the adult worms. PMID- 3840996 TI - The influence of season on sow weaning to estrus interval and subsequent reproductive performance following estrus synchronization by batch weaning. AB - In 45 indigenous Nigerian sows, which had been synchronized in their estrous cycle by batch weaning, the interval was investigated from weaning to estrus in the rainy and dry seasons. It was found to be 3 1/2 days in each season. The heat was short, especially the standing estrus, which will have to be investigated further. There was no seasonal difference in the number of piglets weaned per sow. In the dry season, sows farrowing lost more weight from birth to weaning than in the rainy season. Sows farrowing into the rainy season delivered more piglets. PMID- 3840997 TI - Pyruvate dehydrogenase kinase activity of pig heart pyruvate dehydrogenase (E1 component of pyruvate dehydrogenase complex). AB - The pyruvate dehydrogenase (E1) and acetyltransferase (E2) components of pig heart and ox kidney pyruvate dehydrogenase (PDH) complex were separated and purified. The E1 component was phosphorylated (alpha-chain) and inactivated by MgATP. Phosphorylation was mainly confined to site 1. Addition of E2 accelerated phosphorylation of all three sites in E1 alpha and inactivation of E1. On the basis of histone H1 phosphorylation, E2 is presumed to contain PDH kinase, which was removed (greater than 98%) by treatment with p hydroxymercuriphenylsulphonate. Stimulation of ATP-dependent inactivation of E1 by E2 was independent of histone H1 kinase activity of E2. The effect of E2 is attributed to conformational change(s) induced in E1 and/or E1-associated PDH kinase. PDH kinase activity associated with E1 could not be separated from it be gel filtration or DEAE-cellulose chromatography. Subunits of PDH kinase were not detected on sodium dodecyl sulphate/polyacrylamide gels of E1 or E2, presumably because of low concentration. The activity of pig heart PDH complex was increased by E2, but not by E1, indicating that E2 is rate-limiting in the holocomplex reaction. ATP-dependent inactivation of PDH complex was accelerated by E1 or by phosphorylated E1 plus associated PDH kinase, but not by E2 plus presumed PDH kinase. It is suggested that a substantial proportion of PDH kinase may accompany E1 when PDH complex is dissociated into its component enzymes. The possibility that E1 may possess intrinsic PDH kinase activity is considered unlikely, but may not have been fully excluded. PMID- 3840998 TI - Phosphorylation of bovine cardiac C-protein by protein kinase C. AB - C-protein, a thick filament-associated protein, has been isolated from bovine myocardium and found to be a substrate in vitro of the Ca2+- and phospholipid dependent protein kinase (protein kinase C). Incorporation of approximately 1.6 mol Pi/mol C-protein was observed. This phosphorylation was dependent on both Ca2+ and a phospholipid (L-alpha-phosphatidyl-L-serine was used). Phosphate incorporation specifically into C-protein was verified by SDS-polyacrylamide gel electrophoresis and autoradiography and was almost exclusively into serine residues (86.9%), with only a small amount of phosphothreonine (13.1%) and no phosphotyrosine being detected. Two-dimensional thin-layer electrophoresis of a chymotryptic digest of phosphorylated C-protein indicated site specificity of phosphorylation. Cardiac C-protein is known to be a substrate of cAMP-dependent protein kinase both in vitro and in vivo (Jeacocke, S.A. and England, P.J. (1980) FEBS Lett. 122, 129-132). Isolated bovine cardiac C-protein was rapidly phosphorylated, to the extent of 5 mol/mol, by the purified catalytic subunit of cAMP-dependent protein kinase. Phosphorylation catalyzed by these two protein kinases was not additive, suggesting that the sites phosphorylated by protein kinase C are also phosphorylated by cAMP-dependent protein kinase. Chicken cardiac muscle has also been shown to contain a Ca2+, calmodulin-dependent protein kinase which phosphorylates C-protein (Hartzell, H.C. and Glass, D.B. (1984) J. Biol. Chem. 259, 15587-15596). The physiological role of cardiac C protein may therefore be subject to regulation by multiple protein kinases. PMID- 3840999 TI - Co-release of neuropeptide Y and catecholamines during physical exercise in man. AB - Venous plasma levels of neuropeptide Y-like immunoreactivity (with chromatographic properties of synthetic neuropeptide Y) increased in parallel with catecholamines, heart rate and blood pressure during graded physical exercise in man. The plasma levels of neuropeptide Y correlated better with the levels of noradrenaline than adrenaline, suggesting release of a neural origin. Taken together with previous results, this suggests that neuropeptide Y is released together with noradrenaline upon sympathetic activation during physiological conditions in man. Determinations of plasma neuropeptide Y may therefore be valuable in the assessment of sympathetic nerve activity. PMID- 3841000 TI - Hydralazine: a potent inhibitor of aldehyde oxidase activity in vitro and in vivo. AB - The interaction of the vasodilator, hydralazine, with the molybdenum hydroxylases, aldehyde oxidase and xanthine oxidase has been investigated. A potent progressive inhibition of rabbit liver aldehyde oxidase, in the presence of substrate, by low concentrations of hydralazine (0.1-1 microM) was observed in vitro but no effect was seen with bovine milk xanthine oxidase. This activity was mirrored in vivo when levels of aldehyde oxidase were significantly decreased in rabbits administered hydralazine (10 mg/kg/day for seven days) whereas hepatic xanthine oxidase activity was unaltered by hydralazine treatment. Various metabolites of hydralazine were synthesized but found to be devoid of in vitro inhibitory activity. Aldehyde oxidase prepared from either guinea pig or baboon liver was inhibited in a similar way to that of rabbit liver. PMID- 3841001 TI - Variation in susceptibility to atherosclerosis among inbred strains of mice. AB - Ten inbred strains of mice were fed an atherogenic diet containing 1.25% cholesterol, 0.5% cholic acid and 15% fat. The strains were examined for plasma cholesterol and triglyceride levels and for formation of lipid-containing lesions in the aortic wall. The strains differed considerably in the frequency of lesion formation after 14 weeks on the atherogenic diet with a range of 0-1.8 lesions/mouse. The order of susceptibility to lesion formation from the least susceptible to the most susceptible was BALB/cJ, C3H/J, A/J, SWR/J, NZB/J, less than 129/J, AKR/J, DBA/2J, less than C57L/J less than C57BL/6J. Total plasma cholesterol after 5 weeks on the diet varied from 131 mg/dl to 328 mg/dl among strains; however, there was little correlation between total cholesterol levels and susceptibility to lesion formation (r = 0.29). Plasma triglycerides after 5 weeks on the diet varied less than cholesterol with a range of 137-220 mg/dl. An analysis of the genetic differences among inbred strains of mice might provide useful insights into lipid metabolism and the development of atherosclerosis. PMID- 3841002 TI - A quantitative study on in vitro osteoclast differentiation: effect of parathyroid hormone and 1,25(OH)2D3. PMID- 3841003 TI - Laser therapy for glaucoma. AB - Three laser techniques for the treatment of glaucoma are described. The short burn technique of argon laser iridotomy permitted perforation of the peripheral iris in one session without serious complications, thereby alleviating pupillary block in angle-closure glaucoma. The rates of successful intraocular pressure (IOP) control and visual acuity loss due to cataract progression were similar in laser iridotomy and surgical iridectomy. The tonographic outflow facility remained unchanged after argon laser iridotomy. Techniques of argon laser trabeculoplasty (ALT) to the anterior and posterior aspects of the trabecular band were evaluated. The anterior ALT gave fewer complications, but a lower IOP control rate than the posterior ALT. Posterior ALT over 180 degrees with about 50 burns gave fewer complications than treatment over 360 degrees with about 100 burns, yet the final effects in IOP control were better after the 180 degrees than after the 360 degrees treatment. Nd-YAG laser irradiation can separate dysgenetic iris insertion from the trabecular band in developmental glaucoma without serious complications. This Nd-YAG laser goniotomy may be useful for the treatment of juvenile primary developmental glaucoma. PMID- 3841004 TI - [The effects of intrathecally administered human lymphoblastoid interferon on subacute sclerosing panencephalitis]. PMID- 3841005 TI - Studies on the pharmacological control of gastric emptying in man. AB - Three compounds with differing pharmacological properties have been studied with respect to their effects on gastric emptying, BP, pulse rate and sedation in comparison with placebo in three groups of normal male volunteers. BRL 20627 (10 mg i.v.), a benzamide without dopamine antagonist activity, increased gastric emptying rate (t0.5 BRL 20627 8.3 +/- 0.87 min, placebo 13.8 +/- 2.29 min, P less than 0.005). Zetidoline (20 mg orally), a dopamine D2-receptor antagonist had no significant effect on gastric emptying parameters. BK 34/530 (50 and 100 mg orally) a compound with mixed dopamine agonist and alpha-adrenoceptor antagonist activity, impaired gastric adaptive relaxation as measured by the volume 5 min after the drink and at the higher dose delayed gastric emptying (placebo--5 min volume 256 +/- 44.3 ml, t0.5 15.3 +/- 1.32 min: 50 mg BK 34/530-5 min volume 247 +/- 38 ml, t0.5 14.2 +/- 1.94 min: 100 mg BK 34/530-5 min volume 228 +/- 43.7 ml, t0.5 21.1 +/- 3.82 min). All three drugs resulted in small but significant falls in blood pressure, and in the case of BK 34/530 the 100 mg dose caused significant tachycardia. These studies suggest that dopamine antagonist activity is not a prerequisite for 'gastrokinetic' effects in man, and that there is no inhibitory dopaminergic tone on gastric emptying in normal subjects. PMID- 3841006 TI - Multiple forms of the glucocorticoid receptor steroid binding protein identified by affinity labeling and high-resolution two-dimensional electrophoresis. AB - Potential charge heterogeneity within the glucocorticoid binding protein (GBP) of the glucocorticoid receptor was examined by a combination of affinity labeling, immunopurification, and high-resolution two-dimensional (2D) gel electrophoresis. One-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS PAGE) of [3H]dexamethasone 21-mesylate ([3H]DM) labeled cytosol identified a major, competable, component of Mr approximately equal to 92 000 (92K). This component was recognized by anti-human glucocorticoid receptor antibodies but not by nonimmune serum, indicating that the 92K component was the reduced denatured GBP. Examination of [3H]DM-labeled GBP by conventional 2D electrophoresis utilizing equilibrium isoelectric focusing in the first dimension failed to resolve the 92K GBP into discrete isoelectric components. This behavior was not representative of other, nonspecifically [3H]DM-labeled proteins or proteins in general. Nonequilibrium pH gradient electrophoresis (NEPHGE) was therefore employed to achieve separation in the first dimension. Immunopurified, [3H]DM labeled GBP subjected to NEPHGE reached isoelectric equilibrium after 6 h of electrophoresis at 400 V. A single, broad peak of radioactivity was identified at pH approximately equal to 6.3. Second-dimension analysis of the NEPHGE-separated GBP by SDS-PAGE resolved this peak into two discrete, 92K, isoforms of apparent pI = 5.7 and 6.0-6.5. The GBP charge heterogeneity was confirmed by NEPHGE 2D analysis of [3H]DM-labeled GBP prepared directly from crude cytosol. Two isoforms indistinguishable from those observed in immunopurified samples were identified. An additional, more acidic, isoform (apparent pI approximately equal to 5.2) was also identified. Thus, there are at least two, and perhaps three, isoforms of the GBP. These data therefore suggest that there is significant charge heterogeneity in the GBP of the glucocorticoid receptor. PMID- 3841007 TI - Transbilayer phosphatidylcholine distributions in small unilamellar sphingomyelin phosphatidylcholine vesicles: effect of altered polar head group. AB - The effect of the altered polar head group of phosphatidylcholine (PC) on its transbilayer distributions in small unilamellar vesicles containing sphingomyelin (SM) was ascertained with phospholipase A2 as the external membrane probe. These vesicles were formed by sonication and fractionated by centrifugation. The vesicle size was determined by gel-permeation chromatography and solute entrapment. Experiments were done to confirm that phospholipase A2 treatments did not induce fusion, lyse the vesicles, or cause PC to migrate across the vesicle bilayer. The complete degradation of external PC in intact vesicles was assured by carrying out the enzyme reactions in the absence as well as in the presence of 9.2 X 10(-5) M bovine serum albumin. In small vesicles comprised of SM and 30 mol % 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), DPPC preferentially distributed in the inner monolayer. This preference of DPPC in these vesicles disappeared upon introducing one C2H5 group at the carbon atom adjacent to the quaternary ammonium residue in its polar head group and was reversed when the C2H5 group was replaced by C6H5 and C6H5CH2 substituents or when the P-N distance was increased. These results indicate that the effective polar head-group volume is an important factor in determining the phospholipid distributions across the small vesicle bilayer. PMID- 3841008 TI - Simultaneous modeling of phase and calorimetric behavior in an amphiphilic peptide/phospholipid model membrane. AB - Differential scanning calorimetry (DSC) experiments have been performed on the amphiphilic peptide/1,2-bis(perdeuteriopalmitoyl)-sn-glycero-3-phosphocholine system for which partial phase diagrams have been measured by deuterium nuclear magnetic resonance. The solute concentration dependence of the transition enthalpy in such systems is often interpreted in terms of an annulus of lipid withdrawn, by the solvent, from participation in the transition while the bulk lipid melts with its fully enthalpy. This idea is equivalent to postulating ideal mixing between the lipid and the peptide/lipid complex, and there is little justification for such an assumption. Adaptation of regular solution theory to this system demonstrates that the peptide concentration dependence of the transition enthalpies can be incorporated into a thermodynamic model which reproduces the observed phase behavior fairly well without postulating that a complexing annulus of lipid around the peptide be withdrawn from participating in the chain-melting transition. The model parameters determined by simultaneous fitting of the phase behavior and transition enthalpies are used to simulate the DSC scan shapes. The asymmetry of the calorimetric scans for chi 2 less than or equal to 0.02 is reproduced by the model, but a broad component observed for higher concentration is not. In light of the results presented here, previous analyses of the calorimetric behavior of two-component systems in terms of symmetric transitions which do not account for the possible extent of a region of two-phase equilibrium must be questioned. PMID- 3841009 TI - Calcium-dependent and calcium-independent interactions of prothrombin fragment 1 with phosphatidylglycerol/phosphatidylcholine unilamellar vesicles. AB - We have measured the phase behavior of mixed dipentadecanoylphosphatidylglycerol (DC15PG)/dimyristoylphosphatidylcholine (DMPC) small unilamellar vesicles (SUV) in the presence of saturating (greater than 98% occupancy of binding sites) concentrations of bovine prothrombin fragment 1 and 5 mM Ca2+. Binding of fragment 1 in the presence of Ca2+ was verified by an increase in 90 degrees light scattering. Only in the cases of DC15PG/DMPC SUV below their phase transition and of pure DMPC SUV were such light scattering measurements not reversible upon addition of ethylenediaminetetraacetic acid to complex Ca2+. Phase-behavior changes of DC15PG/DMPC SUV as monitored by diphenylhexatriene fluorescence anisotropy occurred in concert with the binding of fragment 1. The major effects of peptide binding on SUV phase behavior were to raise the phase transition temperature by 2-15 degrees C, depending on vesicle composition, and, in general, to make the phase diagram for these small vesicles closely resemble that of large vesicles. No evidence was obtained for the existence of lateral membrane domains with distinct compositions induced by the binding of prothrombin fragment 1 plus Ca2+. Surprisingly, fragment 1 without Ca2+ also altered the phase behavior of DC15PG/DMPC SUV. Most striking was the effect of fragment 1 (with or without Ca2+) on DMPC SUV phase behavior. Freeze-fracture electron microscopy demonstrated that pure DMPC vesicles were induced to fuse in the presence of fragment 1, while vesicles containing DC15PG remained intact. The rate of DMPC SUV fusion (followed by 90 degrees light scattering) increased with increasing fragment 1 concentration but was not saturable up to 40 microM fragment 1, suggesting a weak, nonspecific interaction between fragment 1 and the neutral phospholipid vesicle.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841010 TI - Infrared characterization of conformational differences in the lamellar phases of 1,3-dipalmitoyl-sn-glycero-2-phosphocholine. AB - Fourier transform infrared spectroscopy was used to characterize the lamellar phases of 1,3-dipalmitoyl-sn-glycero-2-phosphocholine (1,3-DPPC), a positional isomer of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (1,2-DPPC). The molecule exists in three distinct phases over the temperature interval 0-70 degrees C. In the low-temperature (LC) phase, the spectra are indicative of acyl chains packed in an orthorhombic subcell, while the carbonyl groups and phosphate ester at the head group show evidence of only partial hydration. The transition from the low temperature (LC) phase to the intermediate-temperature (L beta) phase at 25 degrees C corresponds to a temperature-induced head-group hydration in which the hydration of the phosphate and carbonyl ester groups results in the reorganization of the hydrocarbon chain-packing subcell from orthorhombic to hexagonal. The transition from the intermediate (L beta) to the high-temperature (L alpha) phase at 37 degrees C is a gel-to-liquid-crystalline phase transition analogous to the 41.5 degrees C transition of 1,2-DPPC. The spectra of the acyl chain carbonyl groups show evidence of significant differences in molecular conformation at the carbonyl esters in the LC phase. In the L beta and L alpha phases, the carbonyl band contour becomes much more symmetric. However, two components are clearly present in the spectra indicating that the sn-1 and sn-3 carbonyls experience slightly different environments. The observed differences are likely due to a preferred conformation of the phosphocholine group relative to the glycerol backbone. Indications from the infrared spectra of differences in the structure of the C = O groups provide a possible explanation for the selection of the sn-1 chain of 1,3-DPPC by phospholipase A2 on the basis of a preferred head group conformation. PMID- 3841011 TI - Relation between red cell anion exchange and urea transport. AB - The new distilbene compound, DCMBT (4,4'-dichloromercuric-2,2,2',2'-bistilbene tetrasulfonic acid) synthesized by Yoon et al. (Biochim. Biophys. Acta 778 (1984) 385-389) was used to study the relation between urea transport and anion exchange in human red cells. DCMBT, which combines properties of both the specific stilbene anion exchange inhibitor, DIDS, and the water and urea transport inhibitor, pCMBS, had previously been shown to inhibit anion transport almost completely and water transport partially. We now report that DCMBT also inhibits urea transport almost completely and that covalent DIDS treatment reverses the inhibition. These observations provide support for the view that a single protein or protein complex modulates the transport of water and urea and the exchange of anions through a common channel. PMID- 3841012 TI - Detection of specific proenzyme activators in snake venoms by a new immunoabsorbant-chromogenic substrate method. AB - In separate experiments, antibodies to plasminogen, factor X and protein C were applied to microtitre trays as commonly used in enzyme-linked immunoassays. After incubation with dilute normal human plasma as a source of the corresponding proenzyme antigen, the wells were exposed to dilutions of various snake venoms. After thorough washing, the microtitre tray wells were tested overnight with chromogenic tripeptide substrates known to be relatively specific for the activated forms of the above factors, i.e., plasmin, factor Xa and activated protein C. The immunochromometric assay described detected two new activators of protein C in Agkistrodon piscivorus and Agkistrodon contortrix venoms and a new factor X activator in Agkistrodon rhodostoma venom. Gel filtration of the latter venom indicated that the factor X activator eluted with high molecular weight, was clearly distinct from the peak fibrinogen clotting activity (Ancrod) and appeared to have no procoagulant activity. Although several Bothrops venoms appeared to contain plasminogen activator by this technique, the observed strong chromogenic activity was observed in microtitre wells independently of plasminogen and represented nonspecific amidase activity. PMID- 3841013 TI - Modeling the electrical behavior of anatomically complex neurons using a network analysis program: passive membrane. AB - We describe the application of a popular and widely available electrical circuit simulation program called SPICE to modeling the electrical behavior of neurons with passive membrane properties and arbitrarily complex dendritic trees. Transient responses may be calculated at any location in the cell model following current, voltage or conductance perturbations at any point. A numbering method is described for binary trees which is helpful in transforming complex dendritic structures into a coded list of short cylindrical dendritic segments suitable for input to SPICE. Individual segments are modeled as isopotential compartments comprised of a parallel resistor and capacitor, representing the transmembrane impedance, in series with one or two core resistors. Synaptic current is modeled by a current source controlled by the local membrane potential and an "alpha shaped" voltage, thus simulating a conductance change in series with a driving potential. Extensively branched test cell circuits were constructed which satisfied the equivalent cylinder constraints (Rall 1959). These model neurons were perturbed by independent current sources and by synaptic currents. Responses calculated by SPICE are compared with analytical results. With appropriately chosen model parameters, extremely accurate transient calculations may be obtained. Details of the SPICE circuit elements are presented, along with illustrative examples sufficient to allow implementation of passive nerve cell models on a number of common computers. Methods for modeling excitable membrane are presented in the companion paper (Bunow et al. 1985). PMID- 3841014 TI - Modeling the electrical behavior of anatomically complex neurons using a network analysis program: excitable membrane. AB - We present methods for using the general-purpose network analysis program, SPICE, to construct computer models of excitable membrane displaying Hodgkin-Huxley-like kinetics. The four non-linear partial differential equations of Hodgkin and Huxley (H-H; 1952) are implemented using electrical circuit elements. The H-H rate constants, alpha and beta, are approximated by polynomial functions rather than exponential functions, since the former are handled more efficiently by SPICE. The process of developing code to implement the H-H sodium conductance is described in detail. The Appendix contains a complete listing of the code required to simulate an H-H action potential. The behavior of models so constructed is validated by comparison with the space-clamped and propagating action potentials of Hodgkin and Huxley. SPICE models of multiply branched axons were tested and found to behave as predicted by previous numerical solutions for propagation in inhomogeneous axons. New results are presented for two cases. First, a detailed, anatomically based model is constructed of group Ia input to an alpha-motoneuron with an excitable soma, a myelinated axon and passive dendrites. Second, we simulate interactions among clusters of mixed excitable and passive dendritic spines on an idealized neuron. The methods presented in this paper and its companion (Segev et al. 1985) should permit neurobiologists to construct and explore models which simulate much more closely the real morphological and physiological characteristics of nerve cells. PMID- 3841015 TI - Pulsatile infusion of luteinizing hormone-releasing hormone induces precocious puberty (vaginal opening and first ovulation) in the immature female guinea pig. AB - Previously we have hypothesized that an increase in luteinizing hormone-releasing hormone (LHRH) due to hypothalamic maturation is the key factor controlling the onset of puberty. This led to the working hypothesis that precocious puberty would be induced if LHRH is administered with an appropriate protocol. Thus, effects of pulsatile infusion of LHRH on the onset of first vaginal opening and first ovulation in immature female guinea pigs were studied. Luteinizing hormone releasing hormone in hourly pulses of either 5 ng or 50 ng was infused through a chronically implanted jugular catheter for 9-29 days starting at 20 days of age. For the control experiment saline was infused in a similar manner. Infusion of 5 ng LHRH/h resulted in significantly earlier (P less than 0.001) ages at first vaginal opening (24.7 +/- 0.9 days) and at first ovulation (28.8 +/- 0.9 days) compared to saline controls (first vaginal opening 53.3 +/- 6.8 days; first ovulation 55.2 +/- 6.5 days). Infusion with a 10-fold higher LHRH dose (50 ng/h) also advanced the age at first vaginal opening (25.3 +/- 0.7 days), but precocious ovulation was no longer induced (53.7 +/- 5.3 days). Interestingly, LHRH infusion with the high dose resulted in a prolonged period of vaginal opening and cornification without ovulation. These results indicate that 1) pulsatile infusion of a small amount of LHRH with a constant frequency induces precocious puberty in a laboratory rodent, and 2) infusion of LHRH with a dose higher than the effective dose for the induction of early puberty results in a persistent estrous anovulatory syndrome. Therefore, the present study not only supports our hypothesis that an increase in endogenous LHRH release is responsible for the onset of puberty, but also further suggests that excessive release of LHRH or abnormal patterns of LHRH release may be involved in the etiology of the anovulatory persistent estrus syndrome. PMID- 3841016 TI - [Malignant lymphomas (primary and secondary) of the thyroid. Description of 9 case reports and review of the literature]. AB - Malignant lymphomas of the thyroid are rare and represent approximately 0.3 to 8.9% of thyroid malignant neoplasms. We report 9 new cases; their clinical and histopathological features are discussed and compared with those of previously published series. Malignant lymphomas of the thyroid raise a number of issues: primary or secondary origin, histological typing (50% of cases are high grade lymphomas), differential diagnosis with either Hashimoto's chronic thyroiditis (often associated with thyroid lymphomas) or genuine anaplastic carcinoma of the thyroid. Routine histological study can be complemented by immunohistochemistry. PMID- 3841017 TI - Masculinization of female mosquitofish by exposure to plant sterols and Mycobacterium smegmatis. PMID- 3841018 TI - Electron microscopic localization of N-terminal proenkephalin (synenkephalin) immunostaining in the guinea pig organ of Corti. AB - Using a pre-embedding immunoelectron microscopic technique, anti-synenkephalin immunostaining has been demonstrated within efferent varicosities (originating from the brainstem) of the inner spiral bundle and the tunnel spiral bundle of the organ of Corti. Axodendritic synapses were observed between the anti synenkephalin immunostained varicosities and auditory dendrites connected to inner hair cells. No anti-synenkephalin immunostaining was found in any efferents at the outer hair cell level. We suggest that this immunolocalization of synenkephalin in the organ of Corti allows a better differentiation of the cochlear efferent systems on a neurochemical basis. The whole lateral system, or at least a significant part of it, could be referred to as the 'enkephalin containing efferent system'. PMID- 3841019 TI - Unfocused laser illumination kills dye-targeted mouse neurons by selective photothermolysis. AB - Selective photothermolysis (SP) is a novel technique by which brief, unfocused laser pulses are selectively absorbed by, and cause selective thermal damage to, endogenously pigmented structures. The present experiments demonstrate the feasibility of using an exogenous non-fluorescent chromophore (procion blue) to effect cellular damage by SP. Dorsal root ganglia neurons in vitro were selectively labeled with procion blue and subsequently damaged by unfocused laser illumination. Progressive cellular damage was assessed by propidium iodide (PI), a fluorescent dye that leaks through damaged membranes and binds to nucleic acids. Graded scores of intracellular PI fluorescence demonstrated a highly significant difference in amount of damage between groups of experimental and control cells. Selective photothermolysis is discussed as an experimental tool for neurobiologists in particular and for general use within the biomedical field. PMID- 3841020 TI - Intracranial pressure mean arterial pressure and heart rate after rapid paralysis with atracurium in cats. AB - The effect of atracurium on intracranial pressure (ICP) was investigated in six cats with normal and increased ICP. The cats were anaesthetized with intraperitoneal pentobarbitone (33 mg . kg-1), acepromazine (0.6 mg . kg-1) and incremental fentanyl (p.r.n. approximately equal to 20 micrograms . kg-1), intubated, and ventilated with nitrous oxide in oxygen. Mean arterial pressure (MAP), heart rate (HR), twitch response and ICP were continuously recorded. After the effect of atracurium had been ascertained under the condition of normal ICP, and after full recovery of twitch response, pH-adjusted Ringer's lactate solution was infused into the cisterna magna until an ICP baseline of 26 +/- 2 mmHg was established and stabilized. Atracurium was then administered again to determine its effect under the condition of elevated ICP. Complete ablation of twitch response was obtained in 68 +/- 15 sec with 0.4 mg . kg-1 atracurium, and there was no significant change in ICP, MAP, HR or cerebral perfusion pressure (CPP) whether initial ICP was normal or elevated. PMID- 3841021 TI - Clinical use of atracurium in myasthenia gravis: a case report. AB - A patient with myasthenia gravis was anaesthetized for thymectomy utilizing atracurium for maintenance of muscle relaxation. The patient was not taking anticholinesterase medications before surgery. Neuromuscular function was monitored by recording the train-of-four response to supramaximal stimulation of the ulnar nerve. Anaesthesia was induced with thiopentone and maintained with isoflurane and N2O in oxygen. Following complete recovery from a succinylcholine block for intubation, the patient developed complete neuromuscular block within two minutes after atracurium (5 mg) was administered. Evidence of recovery commenced 12 minutes later and was complete at 72 minutes. This rate of recovery is consistent with the recovery rate from atracurium during isoflurane anaesthesia in normal patients. Atracurium appears to offer an advantage over other nondepolarizing muscle relaxants in patients with myasthenia gravis due to its shorter duration and less cumulative effect at the neuromuscular junction. PMID- 3841022 TI - Isolation and characterization of a cytolysin produced by Vibrio cholerae serogroup non-O1. AB - A thermolabile toxin (molecular weight, 52 711; isoelectric point, 8.65) produced by a clinical isolate of Vibrio cholerae serogroup non-O1 was cytotoxic for Y-1 mouse adrenal cells and Chinese hamster ovary cells. The toxin lysed rabbit red blood cells and produced a hemorrhagic zone in rabbit skin. When injected intravenously into adult mice, the cytolysin was rapidly lethal and caused fluid accumulation in both 5- and 18-h rabbit ileal loops. Strains of V. cholerae that produced cytolysin but no cholerae enterotoxin were able to cause fluid accumulation in rabbit intestinal loops. PMID- 3841023 TI - Ammonium repression of cephalosporin production by Streptomyces clavuligerus. AB - Production of beta-lactam antibiotics took place during growth of Streptomyces clavulgerus in chemically defined medium. The specific activities of isopenicillin N synthetase ("cyclase"), isopenicillin N epimerase, and deacetoxycephalosporin C synthetase ("expandase") increased during the exponential phase of growth. Specific cephalosporin productivity during fermentation followed a similar pattern, reaching a maximum near the end of the growth phase and decaying rapidly in the stationary phase. Ammonium chloride depressed cephalosporin production, presumably as a result of repression of cyclase and expandase formation, but not of epimerase. No inhibitory effects on enzyme activity by ammonium were found. Addition of tribasic magnesium phosphate [Mg3(PO4)2 X 8H2O] prevented the repression of cyclase and markedly stimulated cephalosporin production. Cephamycin C and, in smaller amounts, O carbamoyldeacetylcephalosporin C were the only cephalosporins detected. Growth with ammonium resulted in lower titers of both compounds, and did not change the relative proportion of each. The correlation found between cephalosporin productivity and cyclase specific activity in different media suggests that formation of this enzyme may be the rate-limiting step in the pathway. PMID- 3841024 TI - Enhancement of the antitumor efficacy of lomustine by the radiosensitizer RSU 1069. AB - Previous investigations have shown that combining the radiation sensitizer misonidazole with conventional alkylating chemotherapeutic agents can lead to a therapeutic advantage. More recently, another sensitizer, RSU 1069, has been reported to give an enhancement of antitumor agent efficacy similar to that observed with misonidazole, but at an approximately tenfold lower sensitizer dose. One chemotherapeutic agent whose activity has been modified by sensitizers to a greater extent in tumors than in critical normal tissues is the nitrosourea lomustine (CCNU). The present studies evaluated the therapeutic benefit of combining RSU 1069 and CCNU in KHT sarcoma-bearing C3H/HeJ mice. The drugs were administered ip, and tumor response was assessed by measuring the survival of clonogenic KHT cells 22-24 hours after treatment. Normal tissue toxicity was determined using peripheral wbc counts 3 days after treatment and a 30-day lethality assay. Combining CCNU with a 0.38-mmol/kg dose of RSU 1069 increased tumor cell killing by a factor of approximately 1.9. Wbc toxicity and 30-day animal lethality increased with CCNU dose, but the addition of RSU 1069 enhanced either endpoint only slightly (factor of 1.0-1.2). The addition of RSU 1069 to CCNU treatment, therefore, led to a significant therapeutic benefit. PMID- 3841025 TI - Synthesis, toxicity, and therapeutic efficacy of 4-amino-N-(2'-aminophenyl) benzamide: a new compound preferentially active in slowly growing tumors. AB - The present paper describes 4-amino-N-(2'-aminophenyl)benzamide (GOE1734) with regard to synthesis; toxicity in mice, rats, and dogs; and differential therapeutic efficacy in slowly and rapidly proliferating rat tumors. GOE1734, an analog of a group of compounds known for other than antitumor effects with relatively simple N-acyl-O-phenylenediamine structure, is characterized by a low bacterial mutagenic potential after in vitro metabolic activation and DNA-DNA crosslinking activity after in vivo treatment. Maximum tolerated doses in rats and dogs amount to 4 and 1 mg/kg, respectively. High growth-inhibiting efficacy was obtained in intratibially implanted osteosarcoma, in methylnitrosourea induced primary mammary carcinoma, and in acetoxymethyl-methylnitrosamine-induced colorectal adenocarcinoma. GOE1734 proved to be ineffective in transplanted Yoshida sarcoma and Walker 256 carcinosarcoma when single or multiple doses were administered at dose levels that were moderately toxic or not toxic. Some antitumor effects were observed in L5222 leukemia after ip transplantation, but no effect could be observed after ic implantation or in vitro incubation and subsequent retransplantation of these cells. Since the latter three rat tumors are characterized by relatively short tumor volume doubling times (0.5-2 days), whereas the first three grow slower (tumor volume doubling time, 11-19 days), the remarkable differential antitumor activity of GOE1734 in fast and slowly growing malignancies is striking. PMID- 3841026 TI - Amsacrine with high-dose cytarabine in acute leukemia. PMID- 3841027 TI - Infarct size limitation by the xanthine oxidase inhibitor, allopurinol, in closed chest dogs with small infarcts. AB - The present study was designed to evaluate the ability of allopurinol to limit infarct size following permanent coronary occlusion in the greyhound. Coronary occlusion was produced by injecting 2.5 mm plastic beads into the coronary artery of the closed chest dog. Non-perfused myocardium, the area at risk, was visualised by autoradiography of 141Cerium labelled microspheres which were infused immediately following coronary embolization. The treated dogs (n = 12) received 400 mg of allopurinol orally one day before surgery. A 25 mg . kg-1 bolus was administered (iv) immediately before occlusion, and repeated every 8 h. 11 dogs served as controls. After 24 h, the dogs were killed and the hearts were sliced into 5.0 mm transverse sections. The infarcted myocardium was visualised by triphenyl tetrazolium chloride staining. The percentage of the risk zone which evolved to infarct was calculated. This percentage was 18.1 +/- 3.95% in the allopurinol group vs 58.4 +/- 2.81% in the control group (p less than 0.001). We conclude that allopurinol is a potent drug for the limitation of infarct size in the dog with permanent coronary occlusion. PMID- 3841028 TI - A Ca2+ insensitive actin-crosslinking protein from Dicytostelium discoideum. AB - We have isolated a 30,000-dalton protein from Dictyostelium which cosedimented with and affected the low shear viscosity of actin. At low concentrations, this protein increased the low shear viscosity to greater than that of the actin control, whereas higher concentrations decreased viscosity. The viscosity decrease correlated with the formation of actin filament bundles, as seen electron microscopically. This protein resembled a previously reported actin binding protein from Dictyostelium [Fechheimer and Taylor, 84, J Biol Chem 259:4514] in electrophoretic mobility, Stokes radius, and ability to crosslink filaments, but was shown to be different by peptide mapping, lack of immunologic crossreactivity, and lack of sensitivity to calcium. PMID- 3841029 TI - Complete replacement of serum in cultures of murine primitive erythroid and multipotential progenitor cells: absolute requirement for spleen conditioned medium. AB - We describe a serum-free medium for the formation of erythropoietic bursts by murine bone marrow cells. Iscove's modified Dulbecco's medium supplemented with bovine serum albumin, iron-saturated transferrin, soybean phospholipids and cholesterol supported burst formation. The further addition of hemin increased burst numbers to above those obtained in serum-containing cultures. With or without hemin, a source of burst-promoting activity (BPA) (crude or partially purified spleen conditioned medium) and erythropoietin were essential. This system provides a sensitive assay for BPA. Of all colonies developing in these cultures, 16% were pure erythroid, 17% mixed erythroid/myeloid, 36% macrophage, 19% macrophage/basophil and macrophage/neutrophil, 9% basophil and 2% neutrophil. PMID- 3841030 TI - Controlled binding of liposomes to cultured cells by means of lectins. AB - Lectin-mediated binding of liposomes to Hela cells was analyzed as a function of different parameters. We show that the amount of lectin covalently bound to liposomes can be accurately controlled. We chose to work with 500 - to 1 000 molecules of WGA bound per liposome of 1 micron diameter. These liposomes bound very efficiently to Hela cells as demonstrated by fluorescent microscopy, and fluorescent cell-sorting. We show that the number of liposomes bound is proportional to the input, over a wide range of concentrations. The liposomes bound very tightly to cells and could not be removed by trypsin or N acetylglucosamine, which competes with WGA binding. PMID- 3841031 TI - [Treatment of a chalazion by local injection of corticoids]. PMID- 3841032 TI - Effects of nafazatrom on cardiovascular, sympathetic, and endocrine responses to hemorrhagic shock in conscious rats. AB - Nafazatrom is an antithrombic drug that has been shown to have beneficial effects in traumatic shock and organ ischemia. This study evaluated the effect of nafazatrom on cardiovascular, sympathetic, and endocrine consequences to moderate or severe hemorrhagic shock in the conscious rat. Nafazatrom (2 mg/kg, i.v.) had no effect on the blood pressure, heart rate, and circulatory norepinephrine, vasopressin, and leukotriene C4 responses to bleeding. Nafazatrom significantly reduced plasma TXB2 and 6-keto-PGF1 alpha and blocked the increment in these cyclooxygenase metabolites in response to hemorrhage. It is concluded that nafazatrom does not increase survival after moderate hypovolemic hypotension and decreases survival to severe hemorrhage. Nafazatrom does not modify the cardiovascular, sympathetic, and neuroendocrine responses to hypovolemic hypotension. PMID- 3841033 TI - Microviscosity of tracheal aspirates in newborns with respiratory distress. AB - The microviscosity of tracheal aspirates from newborn children with respiratory problems was investigated using fluorescence polarization. The pulmonary status of 100 newborns with hyaline membrane disease (HMD) and a reference group (n = 45) was assessed daily throughout of intubation. Two main changes in phospholipid microviscosity (eta) were identified. A decrease in eta associated with a favourable clinical outcome. A dramatic increase in eta with an unfavourable outcome in pulmonary function. These changes correlated with clinical observations, but the trends in microviscosity seemed to appear before any related clinical sign. It is proposed that the measurement of tracheal microviscosity provides a method for checking pulmonary function in the first days of life. The method is rapid and sensitive; it detects small variations barely detectable using more conventional ways by which pulmonary phospholipids are usually studied. PMID- 3841034 TI - Evidence against a vasopressor role of ADH in malignant DOC-salt hypertension. AB - To investigate the possible role of vasopressin (VP) in the maintenance of DOC salt hypertension the effect of two VP pressor antagonists on mean arterial pressure and the pressor responsiveness to exogenous VP were studied in conscious, freely moving rats with malignant DOC-salt hypertension. Intravenous injections of either 20 micrograms/kg of dP Tyr(Me)AVP or 10 micrograms/kg of d(CH2)5Tyr(Me)AVP had no significant effect on mean arterial pressure and heart rate, although both antagonists almost completely abolished the pressor response to VP. Furthermore, the animals with DOC-salt hypertension exhibited decreased pressor responsiveness to exogenous VP. The present findings strongly suggest that VP is not essential as a pressor hormone for maintaining blood pressure in malignant DOC-salt hypertension. PMID- 3841035 TI - Hemodynamic and vascular activity of LY127210, a new vasodilator, in anesthetized spontaneously hypertensive rats: comparison with hydralazine. AB - We used microsphere techniques to determine cardiac output and tissue blood flows in chloralose-anesthetized spontaneously hypertensive rats treated with LY127210 (10 mg/kg, i.p.), hydralazine (2 mg/kg, i.p.), or saline. LY127210 decreased blood pressure, systemic vascular resistance, heart rate and left ventricular end diastolic pressure. Regional vascular resistance fell in kidney, cerebral cortex, ileum and skin, and blood flow decreased in skin, and cerebral cortex. After hydralazine, blood pressure, systemic resistance and left ventricular end diastolic pressure also decreased, but heart rate increased. Regional vascular resistance decreased in the kidney, cerebral cortex, ileum, myocardium and skeletal muscle, and blood flow was either maintained or increased in these tissues. Unlike LY127210, hydralazine decreased blood flow and increased vascular resistance in the skin. Thus, LY127210 reduces blood pressure in hypertensive rats by reducing vascular resistance, although about 1/3 of the fall in pressure was attributed to a decrease in cardiac output. Since heart rate, stroke volume and skin resistance did not increase, LY127210 might also interfere with baroreflex mechanisms. PMID- 3841036 TI - Fourier analysis of ECochG templates. AB - Computer templates of the action potential/summating potential waveforms from electrocochleograms have been analysed in the frequency domain following the Fast Fourier Transform. Analysis in the frequency domain is compared with standard time domain analysis and some inadequacies of the latter technique are shown. A simple account of the principles of Fourier analysis is given which may be of assistance to the general reader, particularly as computer packages currently being marketed with electric response audiometry equipment make this analytical technique readily available. PMID- 3841038 TI - A computer controlled calibrator, spectrum overlap eraser and automatic sensitivity control for an anaesthetic mass spectrometer. AB - The operation, design and performance of a microcomputer controlled spectrum overlap eraser and automatic sensitivity control (ASC) for a clinical mass spectrometer are described allowing calibration for up to eight anaesthetic gases in less than 15 s per gas. The critical design parameters are identified and the mathematical algorithm used discussed. Constructional details of the system are given with particular reference to the key components identified in the analysis of design parameters. The results of static and dynamic testing of the system are reported. The calibrator showed output linearities within +/- 1.7% first standard deviation (FSD) for a two part mixture of gases relevant in anaesthesia and a typical accuracy of 2.1% FSD for any point. Dynamic testing showed that the machine did not impede the overall speed of response of the system. Transient viscosity effects were adequately eliminated and ASC action effective for variation in source pressure between 11.3 X 10(-3) Pa and 2.7 X 10(-4) Pa. Mean drift with the calibrator was found to be less than 0.38% vol/vol h-1. PMID- 3841037 TI - Antitumor and antimetastatic activities of human recombinant interferon alpha A/D. AB - Human recombinant interferon alpha A/D (alpha A/D) was examined for its antitumor activity in several mouse tumor models using metastatic tumors, such as B16 melanoma F1, BL6 and F10, UV2237m fibrosarcoma, and K1735m melanoma. Therapeutic treatment with alpha A/D reduced the incidence of pulmonary metastasis and inhibited the tumor growth resulting in an increase of the mean survival time. Since alpha A/D also showed a prophylactic activity against the metastasis, its antitumor activity was suggested to be due to augmentation of the host defense systems. This was confirmed by the fact that alpha A/D inhibited the in vivo growth and incidence of pulmonary metastasis of B16 F1 sublines regardless of their sensitivity to the direct antiproliferative activity of the IFN in vitro. PMID- 3841039 TI - Visualization of the coronary microcirculation using digital image processing. AB - A system was constructed to allow direct visualization of the coronary microcirculation of a beating rat heart under a microscope. An electrocardiogram (EKG) triggered strobe is used on the video recording and display system to "stop" the action of the beating heart so the surface microvessels can be directly observed. Experimental results are recorded on videotape and played back for frame-by-frame analysis of the data using digital image extraction, image enhancement and edge detection. The digital image processing techniques are designed for multi-purpose applications using recorded video images. PMID- 3841040 TI - Preparation of concentrated solutions of some common solutes by means of calculated molalities. AB - The preparation of high molar concentrations of many solutes can often be very time-consuming owing to the substantial volume, and sometimes temperature, changes which occur as the solute dissolves. By contrast, the preparation of solutions of a given molality is much simpler since all that is required is to mix known weights of the solute and solvent. This paper describes a simple method and a computer program (MOLAL) for preparing known volumes of a given molarity for twenty commonly-used solutes, by means of calculated molalities; the density of the resulting solutions is also given. PMID- 3841041 TI - A complete system for barcode generation on the HP-41CX hand-held computer using a standard thermal printer. AB - One of the unique features of the HP-41C hand-held computer is its ability to read program code and alphanumeric data in the form of printed barcode. This greatly facilitates the dissemination of medical software and data used by this system. Initially, the ability to generate HP-41 barcode was restricted to a few centers in possession of specialized microcomputer equipment, and more recently to users able to either obtain a plotter read-only memory (ROM) module and HP7400 series plotter, or a dot-matrix impact printer, for which a special interface was then required. This paper presents a set of twenty programs which allows all nine types of HP-41C barcode to be generated using an HP-41CX, the commonly encountered 82162A thermal printer, an HP-IL ROM, and the plotter ROM. The package includes a number of input/output routines which are of general utility. Complete barcode listings, generated by the system itself, allow complete installation of the system without use of the keyboard. 'Synthetic programming' code permits the use of helpful non-standard characters in the display and allows that part of the system which is concerned with generating program barcode to run in extended memory, freeing main memory (RAM) to hold a large program. This system should make the generation of barcode much more widely available. PMID- 3841042 TI - A computer simulation of medical decision strategy performance. AB - This study demonstrates a computer model which can be used to compare the effects of errors in probability and utility estimation on the performance of Bayesian and alternative medical decision strategies. The model task requires choosing one of three treatments for a patient with one of three diseases based on the patient's state with respect to five binary cues and estimates of the prior probabilities of disease, the conditional probabilities of the cues and the utilities of the treatments. A classic decision analytic strategy uses Bayes' formula to calculate posterior probabilities of disease and chooses treatments based on maximization of expected value. Alternative strategies use likelihood ratios to calculate disease scores for each patient state and choose the treatment with highest payoff for the disease with the highest score. Two strategies with different cutoffs for the ratios are compared with a random strategy and a classic decision analytic strategy. The simulation results show that the payoffs for all strategies except the random strategy decline with increasing estimation error. The decision analytic strategy has the highest mean payoff at all levels of error. The differences between this optical strategy and the alternatives, however, decrease as estimation error increases, and the frequency with which the strategies based on simple diagnostic scoring rules outperform the formal Bayesian strategy increases. PMID- 3841043 TI - Clinician use of a pediatric cardiology database on a microcomputer. AB - A pediatric cardiology database was designed and implemented on a microcomputer using the MEDUS/A (Harvard School of Public Health) database management system. This database has potential utility in the areas of clinical research, patient management, and administration. Initial uses of the system include a study of ventricular septal defects, and automation of pacemaker clinic and cardiac catheterization laboratory records. Clinicians with little or no programming experience can alter the database structure and tailor complicated applications to their particular needs. Preliminary evaluation of the system is presented. PMID- 3841044 TI - Long-term use of oral contraceptives and cervical neoplasia: an association confounded by other risk factors? AB - One-hundred-and-forty women with cervical intraepithelial neoplasia (CIN) found during pregnancy were compared to 280 pregnant age-matched controls. Information was obtained on obstetrical and gynecological history, sexual behaviour, contraceptive use and smoking of the female and of the male partner. Oral contraceptive use for 60 months or more was significantly associated with CIN. This significance vanished when the effect of confounding factors was controlled for in a log-linear analysis. According to these results, long-term oral contraceptive use does not seem to be a causal factor of CIN, but these women constitute a high risk group due to sexual history and smoking habits and should thus be referred for a regular cytological screening. PMID- 3841045 TI - Human tears inhibit the coating of proteins to solid phase surfaces. AB - The presence of surfactants in human tear samples was studied using methods employed in ELISA technology. Initial experiments whereby diluted tear samples were incubated with special polyacrylate ELISA microcuvettes showed no binding of tear-lactoferrin to the cuvettes whereas a marked binding of purified lactoferrin could be observed. In subsequent experiments it was shown that incubation of purified lactoferrin with increasing amounts of human tears resulted in a dose dependent inhibition of the binding of lactoferrin to the microcuvettes. Partial characterisation of the "coating inhibitory activity" in human tears was investigated by studying the effect of tears or isolated tear fractions on the non-specific binding of a peroxidase conjugated antibody onto the microcuvettes. Preincubation of microcuvettes with tears followed by a wash with phosphate buffered saline resulted in a marked inhibition of the adhesion of the peroxidase conjugate, suggesting that the coating inhibitory activity is caused by a binding of a factor in human tears to the solid phase. The findings reported here resemble earlier observations concerning lacrimal surfactants. The method described in this paper can be performed using a small quantity of human tears or isolated tear proteins and is therefore quite suitable for further biochemical analysis of tear surfactant activity as well as for clinical studies in patients with various tear film disorders. PMID- 3841046 TI - Growth-related changes in specific mRNAs upon lectin activation of human lymphocytes. AB - A cDNA library in lambda gt10 was constructed from the cytoplasmic poly(A) +RNA of human peripheral blood lymphocytes after 72 hr of phytohemagglutinin stimulation, with the aim of assessing selective gene expression as a result of lymphocyte activation. Thirteen recombinants were isolated by the use of an enriched probe and differential screening. These clones were categorized into two groups with respect to their hybridization to mRNA. In the first group three recombinants were isolated, which hybridized to single discrete mRNAs in the size range 0.7-1.7 kb. The mRNAs corresponding to these clones were present at elevated levels in activated lymphocytes, but the kinetics of increase differed. The 0.7-kb mRNA coded for by clone p1L1 increased two-fold at 6 hr and remained elevated over 72 hr, as did beta-actin mRNA. The 1.7-kb mRNA coded for by clone p9L2 increased two- to three-fold after 6 hr and was maximally expressed after 24 hr exposure to phytohemagglutinin, coincident with the onset of DNA replication, and maintained this level up to 72 hr. The 1.0-kb mRNA coded by p10L2F which was rare in resting cells increased 25- to 30-fold after 6 hr, prior to overall transcriptional increases and reached peak levels after 72 hr when a substantial proportion of the cells were in the S and G2 + M phases of the cell cycle. This clone was undetectable or very rare in the leukemic T-lymphoblast cell line CCRF CEM. The second group of clones, consisting of the remaining 10 recombinants, did not hybridize to discrete bands, but to a smear on RNA blots.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841048 TI - Metabolic and toxicologic study of an artificial sweetener, oxime V. AB - Metabolic disposition and subchronic oral toxicologic studies were conducted on a new synthetic sweetener, Oxime V. Based on radioactivity assay, the compound was readily absorbed and metabolized. Excretion was nearly quantitative 48 hours after dosing the rat, dog, and rhesus monkey. The major metabolites were formed by oxidation and reduction of the cyclohexadiene ring, oxidation of the aldoxime and dimethyl ether moieties followed by conjugation with glycine, thiomethylation of the ring, and O-glucuronidation of the aldoxime. A two-month feeding study was conducted with male adult rats. The average consumption of Oxime V was 396.5 mg/kg per day by rats fed a diet containing 0.6% of the test compound. No treatment related histopathologic lesion was observed in the liver, kidney, spleen, and testes. The liver weight relative to the body weight and serum bilirubin level were increased. PMID- 3841047 TI - [Cytostatic polychemotherapy in the aged]. AB - Adherence to the dose or the need for dose reduction and the duration of treatment intervals were determined retrospectively for 1446 chemotherapy courses in 291 patients with malignant lymphoma and breast cancer. In patients over 60 years of age treated with the COP and COPP regimes there was a significantly higher frequency of deviation from the standard regime than in younger patients; a similar situation was seen in patients with breast cancer. The cause in the elderly patients was presumably due to the higher incidence of non-oncological diseases. In a group treated using the CHOP-scheme there was no difference in comparison with the reference group. In this group patients with severe pre existent diseases were excluded before treatment. The results indicate that age itself is not a major risk factor for a combination chemotherapy. Pre-existent diseases play a substantial role in the toxicity of cytostatics. PMID- 3841049 TI - [Arthrography of the knee in the diagnosis of meniscus disorders]. PMID- 3841050 TI - Clearance of large amounts of natural surfactants and liposomes of dipalmitoylphosphatidylcholine from the lungs of rabbits. AB - Three-day-old rabbits were given intratracheal injections of radiolabeled natural sheep surfactant, rabbit surfactant, or liposomes of dipalmitoylphosphatidylcholine that contained greater than three times the quantity of phosphatidylcholine present in the endogenous surfactant pool. The recoveries of radiolabeled phosphatidylcholine and total phosphatidylcholine in alveolar washes, lung tissue, and total lung (alveolar washes plus lung tissue) were measured for 72 h. Approximately half of the two natural surfactants rapidly became lung tissue associated, and phosphatidylcholine derived from the rabbit surfactant was cleared from the total lung twice as rapidly as was the phosphatidylcholine from sheep surfactant (20.7% versus 10.4% of the amount present at zero time/24 h, p less than .05). The alveolar surfactant pool size did not decrease despite the clearance of the exogenously administered material. The liposomes of dipalmitoylphosphatidylcholine were cleared from the total lung at the same rate as the rabbit surfactant phosphatidylcholine; however, compared to the natural surfactants, much less of this material became lung tissue associated. The administration of the natural rabbit surfactant did not decrease the amount of radiolabeled choline, palmitic acid, or 32P that was incorporated into lung phosphatidylcholine or the amount of labeled phosphatidylcholine that was secreted to the alveoli. However, sheep surfactant increased the percent of radiolabeled phosphatidylcholine recovered by alveolar wash. These experiments document differences in clearance rates, tissue and alveolar association patterns, and subtle effects on endogenous surfactant metabolism for two surfactants and liposomes of dipalmitoylphosphatidylcholine following intratracheal administration. Uniform metabolic responses should not be anticipated following treatments with different surfactant preparations. PMID- 3841051 TI - Secretion of surfactant by rat alveolar type II cells: morphometric analysis and three-dimensional reconstruction. AB - Secretion of surfactant by alveolar type II cells occurs by exocytosis and is stimulated by several mechanical and hormonal mechanisms, including beta agonists. We examined the morphological correlates of this process by electron microscopy and by three dimensional reconstructions of rat lung alveolar epithelial type II cells before and after isoproterenol stimulation. Male rats were given a dose of isoproterenol 2 hours prior to anesthesia. The lungs were fixed by intratracheal instillation and lung tissue was processed by methods designed to enhance the retention of saturated phospholipids. The type II cells were evaluated by transmission and scanning electron microscopy and morphometry of the type II cells was performed. Three dimensional reconstruction of secretory events at the alveolar air border was also done. We observed a dose dependent increase in elliptical cell-surface pores averaging 0.2 X 0.4 micron in size on the alveolar luminal side of type II cells. Most often these pores were surrounded by an elevated area lacking microvilli and overlying an area of granular cytoplasm. The pores observed were about half the average diameter of the lamellar bodies and a deformation of that spherical secretory organelle was seen frequently. We conclude these cell-surface pores represent the structures through which surfactant is released by type II cells. During the secretion of lamellar bodies, deformation may be imposed at the restriction of the surface pores. This deformation could be important in the transformation of the lamellar material from an intracellular storage site to its active role on the alveolar surface. PMID- 3841052 TI - Pregnancy complications and outcomes in a cohort of women with epilepsy. AB - To assess the possible adverse effects of maternal epilepsy on the course and outcome of pregnancy, all 138,780 Washington State birth certificates for the years 1980-81 were screened, and 204 births to epileptic mothers were identified. This was a lower than expected frequency of pregnancies in epileptic women. These births were compared with 612 randomly chosen control births for the same 2-year period. Of 46 pre- and perinatal events considered, eight were found to have occurred with significantly increased frequency for mothers with epilepsy. The offspring of these women were 2.8 times more likely to have low birth weight for their gestational age and 2.5 to 3.7 times more likely to have low Apgar scores or asphyxia. The excess risk of these adverse outcomes could not be explained by maternal race, parity, age, previous fetal loss, or socioeconomic status. These findings suggest that increased vigilance for complications of pregnancy and childbirth is warranted for epileptic women. PMID- 3841053 TI - Methodological issues in modeling the relationship between low-level lead exposure and infant development: examples from the Boston Lead Study. AB - This paper addresses several methodological issues relevant to an assessment of the association between low-level lead exposure and early development. In particular, we discuss methods for choosing, from a large pool of candidates, the covariates to control when estimating this association. We examine the issue of confounding and explain why adjusting increased, rather than decreased, the estimate of the association between blood lead level and development at 6 months of age in our sample. A step-by-step description of our strategy for model building is presented. Finally, we demonstrate the robustness of the findings by showing that the magnitude and standard error of the estimated lead effect is not affected appreciably by the method of selecting covariates to be controlled for or by the characterization of lead as a continuous, ordinal, or dichotomous variable. Although these issues arose in the course of analyses of data collected by the Boston lead study (D. Bellinger, H. Needleman, A. Leviton, C. Waternaux, M. Rabinowitz, and M. Nichols (1984), Neurobehav. Tox. Teratol., 6, 387-402), they apply to other current prospective lead studies as well. PMID- 3841054 TI - Integrated control of Strongylus vulgaris infection in horses using ivermectin. AB - An attempt was made to control or eliminate Strongylus vulgaris from a closed group of three horses at pasture near Perth, Western Australia, by dosing with ivermectin on four occasions during the time of year when it was believed that environmental conditions would eliminate all the non-parasitic stages of that species. At necropsy, five months after the last dose of anthelmintic and after continually grazing the same pastures, no S vulgaris or arterial lesions were found in those horses and S edentatus, Draschia megastoma and Habronema species were also almost completely eliminated. PMID- 3841055 TI - Epidemiological approach to the control of horse strongyles. AB - An investigation of the spring rise in strongyle egg output of grazing horses on two commercial horse farms in northern USA in 1981 and 1982 revealed two distinct spring and summer rises in faecal egg counts, with peaks in May and August/September. There was a marked rise in the concentration of infective larvae on pasture two to four weeks after the peaks in egg output, so that grazing horses were at serious risk from June onwards and pasture larval counts on one farm did not fall to low levels until June of the following year. The spring and summer rises in faecal egg counts appeared to be seasonal in nature, to be derived largely from worms developing from previously ingested larvae, rather than from newly ingested larvae, and to be unrelated to the date of foaling. An epidemiological approach to strongyle control based on prophylactic treatments in the spring successfully eliminated the spring rise in egg output but was inadequate to control the summer rise or subsequent escalation of pasture infectivity in September. It was, nevertheless, superior to a conventional treatment programme at eight week intervals, using the same drug, pyrantel pamoate. Prophylactic spring/summer treatments proved to be much more effective. Both pyrantel pamoate at four week intervals and ivermectin at eight week intervals kept faecal egg counts at low levels during spring and summer. As few as two ivermectin treatments (11 May, 6 July) resulted in a sixfold reduction in pasture larval counts on 9 November and 3 January for the treated group (8872, 8416 stage three larvae [L3]/kg) compared to the control group (52,824, 50,984 L3/kg).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841056 TI - Lymphosarcoma: the case for case reports. PMID- 3841057 TI - Clinicopathological features of lymphosarcoma involving the thoracic cavity in the horse. AB - The clinical and post mortem features of 11 cases of lymphosarcoma involving the thoracic cavity are reviewed. The clinical findings included inappetence, weight loss, pectoral oedema, dyspnoea, pleural effusion and distension of the jugular veins. Dysphagia was present in three cases. At post mortem examination lesions were found in the abdomen as well as the chest in eight cases; clinical signs of abdominal disease were present in two cases. The features of nine other similar cases recorded in the literature are reviewed. PMID- 3841058 TI - Palatine lymphosarcoma in two horses. PMID- 3841059 TI - Regulated production of an influenza virus spliced mRNA mediated by virus specific products. AB - The influenza virus NS2 mRNA is generated through processing by cellular enzymes of a transcript (the NS1 mRNA) of virion RNA segment 8. Production of this mRNA is altered in cells infected with a mutant of influenza A (fowl plague) virus. The proportion of segment 8 transcripts which accumulated in a spliced form was found to be considerably lower in mutant virus-infected cells than in cells infected with wild-type virus, and the amplification in production of NS2 mRNA relative to that of the NS1 mRNA, which normally occurs during infection with wild-type virus, was not observed with the mutant. The NS1 mRNA specified by the mutant virus has unaltered splice recognition sites and was apparently processed normally during a mixed infection with a strain of virus which is wild-type for production of NS2 mRNA. These results suggest that the production of NS2 mRNA is regulated by virus-specific products; these products may act by increasing the efficiency of splicing of NS1 mRNA. PMID- 3841060 TI - Steady-state kinetics of skeletal muscle myosin light chain kinase indicate a strong down regulation by products. AB - The kinetic behaviour of myosin light chain kinase isolated from skeletal muscle was studied under steady-state conditions using highly purified phosphorylatable light chains 2 (LC2). Forward reaction, product inhibition, and reverse reaction data indicate a sequential mechanism which can be interpreted best by a rapid equilibrium random bi-bi reaction model. The forward reaction parameters are KATP = 150 microM, KLC2 = 5.3 microM, and Ki LC2 = 7.6 microM. The enzyme forms a dead end complex with ADP and light chain 2; Kd, ADP of this complex is 50 microM. The forward reaction is also strongly inhibited by the phosphorylated light chain 2, Ki, LC2P is 1.5 microM. An equilibrium constant Keq of about 70 can be calculated from the kinetic parameters which agrees with the directly measured value of about 60. The role of the two inhibitory mechanisms in the regulation of the enzyme and of the high energy of the light chain phosphate bond as deducible from Keq are discussed. PMID- 3841061 TI - Stimulation of Trypanosoma brucei pyruvate kinase by fructose 2,6-bisphosphate. AB - The activity of pyruvate kinase present in a crude extract of the bloodstream form of Trypanosoma brucei was greatly increased by fructose 2,6-bisphosphate, which converted the saturation curve for phosphoenolpyruvate from a sigmoid into a hyperbola with no change in V. Phosphate and arsenate had an effect opposite to that of fructose 2,6-bisphosphate and the apparent Ka for fructose 2,6 bisphosphate was shifted from 75 nM to 1.5 microM by the presence of 5 mM phosphate. Fructose 1,6-bisphosphate had effects similar to those of fructose 2,6 bisphosphate but at approximately 4000-fold higher concentrations. Pyruvate kinases of Crithidia luciliae and of Leishmania major, two trypanosomatids which are like T. brucei in containing glycosomes, were also stimulated by fructose 2,6 bisphosphate and inhibited by phosphate. PMID- 3841062 TI - Partial purification and some properties of a latent CO2 reductase from green potato tuber chloroplasts. AB - We have partially purified the CO2 reductase, present in green potato tuber chloroplasts, as a latent form. Illumination of the chloroplasts in the absence of substrate, bicarbonate, activated the enzyme, which could then be obtained in soluble forms. Purification of the enzyme was achieved by (NH4)2SO4 fractionation (0-30%) and adsorption and elution from a DEAE-Sephadex A-50 column. The final preparation showed 15-fold purification and 50% recovery of the activity. The pH optimum for CO2 reductase was 8.0. Hepes and Tricine buffers showed maximum activity whereas Tris/phosphate or borate failed to show any activity. The enzyme reaction was sensitive to the presence of metal ions like Fe3+, Hg2+, Cu2+, Mo6+ and Zn2+, however, a threefold activation was observed with Fe2+. The metal requirement for CO2 reductase was evident from the observed inhibition by metal chelators like o-phenanthroline, alpha, alpha'-dipyridyl, bathocuproine, 8 hydroxyquinoline etc. Out of these o-phenanthroline was the strongest inhibitor and its concentration for 50% inhibition was 40 microM. The presence of Fe2+ ions in the reaction mixture protected the enzyme from heat denaturation upto 50 degrees C. Maximum enzyme activity was observed at 15 degrees C. The enzyme activity showed a 30-s lag period and the maximum was reached in 90 s. Supplementation of sodium dithionite in the reaction activated enzyme activity threefold, suggesting involvement of dithiol groups in the catalytic activity. There was strong inhibition by -SH inhibitors like 5,5'-dithiobis(2-nitrobenzoic acid) and N-ethylmaleimide and -SH reagents like dithiothreitol, 2 mercaptoethanol and cysteine. Various nucleotide coenzyme tried inhibited the enzyme strongly. PMID- 3841063 TI - Structural and functional studies of hemoglobin Poissy alpha 2 beta 2(56) (D7) Gly----Arg and 86 (F2) Ala----Pro. AB - Hemoglobin Poissy alpha 2 beta 2(56) (D7) Gly----Arg and 86 (F2) Ala----Pro, is a new variant of the beta chain with two substitutions within the second exon of the corresponding gene. The electrophoretic mobilities are identical to those of Hb Hamadan alpha 2 beta 2(56) (D7) Gly----Arg as is the fingerprint of the tryptic hydrolysate of the two abnormal beta chains. The second substitution beta 86 Ala----Pro was detected by high-pressure liquid chromatography. Hb Poissy has a threefold increase in oxygen affinity with low Hill coefficient and diminished Bohr effect, which are restored to normal upon addition of 2,3 bisphosphoglycerate. Since the functional properties of Hb Hamadan (beta 56 Gly-- -Arg) have been described as normal, the abnormal function of Hb Poissy may be attributed to the beta 86 (F2) Ala----Pro substitution. Hb Poissy exhibits a mild instability and a greater reactivity of the thiol groups of the beta 93 (F9) Cys residues in the deoxy form than does Hb A. The oxidation rate of Hb Poissy is biphasic indicating a large inequivalence between the alpha and beta hemes. Thereafter NMR studies demonstrated that the beta 86 Ala----Pro substitution produces a displacement of the F helix closer to the heme plane and a large increase in the dynamic fluctuations of the tertiary structure on the proximal side of the beta hemes. These results lead to the conclusion that the beta 86 Ala ---Pro substitution produces a destabilization of the F helix extending downwards to the FG corner and altering both the beta hemes and the alpha 1 beta 2 contacts. PMID- 3841064 TI - Pulmonary mycotic aneurysms secondary to infective endocarditis in a patient with a persistent ductus arteriosus and partial anomalous pulmonary venous drainage. AB - Mycotic aneurysms are a rare but recognized complication of infective endocarditis. Aneurysms of the pulmonary artery are usually associated with infected congenital heart lesions and especially with persistent ductus arteriosus. This report deals with a patient with a persistent ductus who developed multiple mycotic aneurysms in the right lung following infective endocarditis, and whose management was complicated by anomalous venous drainage of most of the contralacteral lung. Surgical closure of the ductus to reduce pulmonary blood flow failed to prevent haemoptysis, and further surgery to ligate the feeder arteries to the aneurysms was required. PMID- 3841065 TI - Radioiodine therapy for Graves' disease: multivariate analysis of pretreatment parameters and early outcome. AB - Twenty-one clinical, biochemical, scan and tracer-kinetic parameters were documented in 76 patients with Graves' disease who had received a standard 5-mCi therapy dose of 131I. Linear discriminant analysis was then undertaken to determine what combination of variables best predicted outcome. One year after therapy, 40 patients were euthyroid, 11 were hypothyroid, and 25 were still thyrotoxic. Linear discriminate functions combining 24-h 131I uptake, the presence or absence of thyroid eye signs and a computer-derived measurement of thyroid cell mass best discriminated the three outcome groups. The proportion of patients correctly reclassified according to outcome using these functions was, however, only just over 50%. It is concluded that no single or combination of pretreatment variables predicts early outcome with sufficient confidence to justify a rigorously 'scientific' approach to the administration of 131I therapy for Graves' disease. PMID- 3841066 TI - Characterization and automatic identification of ECG conduction abnormalities using segmental multiharmonic Fourier analysis of gated blood-pool scintigrams. AB - This study of biventricular segmental timing sequences compared patterns of the first-harmonic phase with those of multiharmonic Fourier-analysis-derived parameters to determine their suitability for the classification of patients using an automatic pattern recognition scheme. The study involved nine patients with normal ECGs, six with left bundle branch block, 4 with right bundle branch block, and 6 with right-ventricular pacemakers; all patients had normal left ventricular function. The segmental sequence described by the time of end systole was similar to that described by the first-harmonic phase, with a lower correlation using the time of maximum filling rate, and a rather poor correlation of the time of maximum ejection rate with the other parameters. Thus, despite theoretical difficulties, timing patterns described by phase best agreed with those of the time of end systole. Intersegmental timing differences were used as criteria for discriminating between groups by means of a sequential logic tree. Using either phase, time of end systole or time of maximum ejection rate, all patients were correctly classified into the four ECG categories. More intersegmental timing differences were useful as criteria for phase (57) than for the time of end systole (45) or the time of maximum ejection rate (30). The first harmonic phase was more efficient than the time of end systole for separating patient groups. Sequential biventricular timing disorders can be objectively classified using either first-harmonic or multiharmonic Fourier analysis, and their patterns can be automatically recognized and used for classification. PMID- 3841067 TI - A prospective study of the treatment of high-grade histology non-Hodgkin's lymphoma involving the gastrointestinal tract. AB - Thirty-six patients presenting with stage II-IV primary gastrointestinal non Hodgkin's lymphoma of high-grade pathology were treated in a prospective study from 1975 to 1983 with combined modality therapy. A complete response rate of 56% was obtained and the overall 5-yr survival rate was 36%. The 5-yr relapse-free survival rate of the complete remitters was 79%. Multivariate analysis revealed that the remission achieved (P less than 0.001) and the completeness of primary surgery (P = 0.018) would reliably predict the duration of overall survival. The finding of diffuse histiocytic histology (Rappaport) predicted longer relapse free survival. The majority of deaths were related to intra-abdominal complications and not to disseminated lymphoma. Gastrointestinal tract non Hodgkin's lymphoma of high-grade pathology of all stages is curable with a combination of chemotherapy and radiotherapy following surgery to remove as much macroscopic disease as is possible. PMID- 3841068 TI - Schedule dependence of activity of the amsacrine analogue CI-921 towards P388 leukaemia and Lewis lung carcinoma. AB - The 4-methyl-5-(N-methyl)carboxamide derivative (CI-921; NSC 343499) of the clinical antileukaemia agent amsacrine is highly active towards P388 leukaemia and Lewis lung carcinoma in mice. When administered intraperitoneally at the optimal schedule and dose, CI-921 provided 5/650-day survivors in leukaemic mice and 10/11 60-day survivors in mice previously inoculated intravenously with Lewis lung cells. An intermittent (every 4 days X 3) schedule was superior to single dose, daily X 5 or daily X 9 schedules. Although intraperitoneal dosage was superior to intravenous or oral dosage for the treatment of intraperitoneally inoculated P388 leukaemia, all three routes of administration provided similar results with intravenously inoculated Lewis lung or subcutaneously implanted P388 cells. Daily intraperitoneal dosage schedules provided sharper dose-response relationships than intermittent schedules, and with daily schedules 1.5-fold rather than 2-fold dose increments were necessary for reliable detection of activity against Lewis lung carcinoma. PMID- 3841069 TI - Prenatal exposure of rats to antidepressants enhances agonist affinity of brain dopamine receptors and dopamine-mediated behaviour. AB - The effects of acute treatment or prenatal exposure of rats to antidepressants on locomotor activity and [3H]spiroperidol binding to striatal membranes were studied in 25 day old rats. Prenatal exposure or acute treatment with the antidepressants chlorimipramine, iprindole or mianserin reduced locomotor activity on postnatal day 25. On the contrary, prenatal exposure to nomifensine induced locomotor hyperactivity. It was also found that chlorimipramine, iprindole or nomifensine enhanced the locomotor response to apomorphine. Acute treatment with mianserin, markedly decreased locomotion but in utero mianserin did not modify the apomorphine-induced hyperactivity. Scatchard analysis showed no change in the characteristics of binding of [3H]spiroperidol to striatal dopamine receptors after antidepressant treatment. However, the ability of dopamine to compete for these sites was significantly enhanced after prenatal exposure to all the antidepressants. This increase in agonist affinity for dopamine receptors may explain the long-lasting behavioural supersensitivity of dopamine receptors observed after chronic treatment with typical or atypical antidepressants. PMID- 3841070 TI - The effect of local and systemic application of dopaminergic agents on tail flick latency in the rat. AB - Dopamine (DA) is thought to have a neurotransmitter role in the spinal cord of the rat. Intrathecal administration of the DA receptor agonist apomorphine has previously been shown to reduce nocifensive responses. The present experiments investigated the site of action of apomorphine, and the mechanisms by which DA agonists apparently produce antinociception. Small doses of apomorphine (40-80 micrograms/kg) increased the tail flick latency (TFL) in lightly anaesthetised rats when given intrathecally and intravenously but not intracerebroventricularly. This effect is probably mediated via D2 receptors since the D2 agonist LY171555 had a similar effect whereas the D1 agonist SK&F 38393 was inactive. Furthermore the D2 antagonist sulpiride blocked the effects of apomorphine and LY171555. The spinal monosynaptic reflex was not modified by 150 micrograms/kg apomorphine suggesting that sensory rather than motor processes are being influenced. Pretreatment with the serotonin receptor antagonist methysergide prevented the apomorphine induced increase in TFL. It is concluded that exogenously applied DA agonist can result in antinociception in the spinal cord and that this effect may be dependent upon activity in the spinal 5 hydroxytryptaminergic and noradrenergic systems. PMID- 3841071 TI - Indirect hypothalamo-cerebellar pathway? Demonstration of hypothalamic efferents to the lateral reticular nucleus. AB - Hypothalamic efferents to the lateral reticular nucleus (NRL) have been demonstrated in the cat by means of anterograde and retrograde axonal transport of the wheat germ agglutinin-horseradish peroxidase (WGA-HRP) complex. Pressure injections of the WGA-HRP complex into the hypothalamus resulted in anterograde labelling of branching terminal axons both in the NRL and in an adjacent X area, presumably the ventrolateral catecholaminergic cell group (A1). After microiontophoretical ejections of the WGA-HRP complex into the NRL from a ventral approach, retrogradely labelled neurons were found in the lateral, dorsal, posterior and anterior hypothalamic areas and in the tubero-mammillary, dorsomedial and periventricular nuclei. The projection is bilateral with a clear ipsilateral predominance and has its main origin in the lateral hypothalamic area. The locations of hypothalamic cells projecting to the NRL are somewhat different from those giving rise to hypothalamo-cerebellar and hypothalamo-spinal connections. The present demonstration of a hypothalamic input to one of the major precerebellar relay nuclei introduces a new possible indirect route through which the cerebellum may be influenced by the hypothalamus. The different indirect and direct hypothalamo-cerebellar pathways and their potential functional importance are discussed. PMID- 3841073 TI - Eosinophilic granulocyte deficiency in mice mutant in sl and w loci. AB - Homozygous Sl/Sl and Wv/Wv mice were found to have approximately 15% of the normal number of circulating eosinophils. Furthermore, these mice exhibited reduced numbers of eosinophilic granulocytes in the bone marrow, spleen and thymus as compared to littermate control normal mice. PMID- 3841072 TI - Distribution of the tecto-thalamic projection neurons in the hereditary microphthalmic rat. AB - Tecto-thalamic projections in the hereditary bilaterally microphthalmic rat were studied by means of WGA-HRP injection into the dorsal lateral geniculate nucleus (LGNd) and the lateroposterior thalamic nucleus (LP). Histological study in the mutant rats showed that whereas LGNd and superficial layers of the superior colliculus (SC) suffered from a remarkable reduction in size, LP had no histological changes as compared to the normal animals. Unilateral injection of the tracer into the microphthalmic LGNd showed that WGA-HRP positive neurons were present mostly in the ipsilateral str. griseum superficiale (SGS) of the SC. However, the number of labeled SGS neurons of the microphthalmic animals was about 3% of the normal. Although cell bodies of the normal tecto-LGNd neurons in the SGS were spindle-form in shape and issued one or two proximal dendrites from each pole, the microphthalmic tecto-LGNd neurons showed an irregular contour and their dendrites were not so intensively labeled. Unilateral injections of WGA-HRP into the LP revealed that the tecto-LP neurons were mainly distributed in the ipsilateral str. opticum of the colliculus (SO) in both normal and microphthalmic animals. However, the number of labeled SO cells in the microphthalmic rat was about one-half of the normal. Furthermore, the size of labeled tecto-LP neurons was smaller than that of the normal ones, and they showed irregular round to oval cell bodies with equivocally labeled dendrites, in contrast to the normal tecto LP neurons with polygonal cell bodies extending three or more dendrites in a radial fashion. These results indicate that there exist the tecto-LGNd and -LP projection neurons in the microphthalmic rat and that their laminally segregated projection is fundamentally preserved. However, the number of the tecto-thalamic projection neurons, especially of the tecto-LGNd cells, was markedly diminished in the mutant tectum compared to normals. PMID- 3841074 TI - 2-Substituted-3-pyridinolethers as hypolipidemic and platelet aggregation inhibiting agents. AB - Some 2-substituted 3-pyridinolethers were synthesized, with one side chain bearing a carboxylic function; among these there are products having structure analogies with the prostaglandins. The results of hypolipidemic and hypocholesterolemic tests on experimental hyperdyslipidemic animals, as well as those on the inhibition of platelets aggregation and on fibrinolytic activity are reported. PMID- 3841075 TI - Monitoring of suspected infertile men with varicocele by the sperm penetration assay. AB - Although varicocele remains the most frequently diagnosed cause of male infertility, and improvement in semen quality is associated with repair of varicocele, improvement in spermatozoal fertilizing capacity has not been conclusively demonstrated. The sperm penetration assay was employed to monitor prospectively surgical (n = 59) and nonsurgical (n = 40) groups of men with varicocele. There were no significant increases in the average count, motility, morphologic features, or sperm penetration assay results for either group. Varicocele surgery enhanced assayable egg penetration rates in 14 of the 59 patients (23.7%), whereas the nonsurgical group had 10% spontaneous improvement. Of those in the surgery group who showed assayable fertility enhancement and were attempting conception, pregnancies were achieved in 70% (7 of 10 patients). Of patients in the nonsurgical group who improved in the assay, no pregnancies were obtained. PMID- 3841076 TI - The value of adenosine triphosphate (ATP) measurements in assessing the fertilizing ability of human spermatozoa. AB - A study was undertaken to examine the relationship between adenosine triphosphate (ATP) levels and the fertilizing capacity of human spermatozoa in vitro and in vivo. The concentration of ATP in semen was found to be positively correlated with the ability of sperm to fuse with zona-free hamster oocytes. However, it was also demonstrated that a large part of this relationship depends upon the relationship between semen ATP concentrations and sperm number. Measurements of ATP levels in cryostored ejaculates used in an artificial insemination by donor program revealed that such measurements were not able to distinguish fertile from infertile ejaculates. However, among fertile donors, ATP levels did seem to contribute useful information on relative fertility. It is concluded that ATP measurement has a limited role in the laboratory evaluation of sperm function. PMID- 3841077 TI - Practical aspects on the estimation of the parameters in Coale's model for marital fertility. AB - This paper demonstrates the estimation of the parameters in the Coale model for marital fertility by the maximum likelihood method, under the assumption of a simple Poisson process model. The necessary calculations are easily performed in the statistical computer program package GLIM, and the necessary commands are noted. Without access to GLIM, or any equivalent, it is still possible to fit the model approximately by the use of any weighted linear regression program. In both cases, goodness of fit tests are available. PMID- 3841078 TI - [Calcium and phosphorus metabolism in insulin dependent and non-insulin dependent diabetics, well-controlled and poorly-controlled]. AB - We studied phosphorus and calcium metabolism in 50 adult insulin dependent and non insulin dependent diabetics arranged in 4 groups according to therapy and control of diabetes. We observed: a low level of blood magnesium in all diabetics a lower level of P T H, more pronounced with poorly controlled diabetes. a decrease of 1-25 (OH) 2 D levels without modification of the 25 (OH) D levels in badly controlled diabetics. This decrease may be related to the low level of PTH with a 1 alpha hydroxylation defect. These results are in favor of the hypothesis of a primary bone problem leading to the pre-senile and subclinical osteoporosis observed in diabetics. Hyperglycaemia rather than insulinopenia may be involved. Rigorous diabetes control significantly decreases all the observed differences, except the low magnesium level. PMID- 3841079 TI - Sucralfate compared with ranitidine in the short-term healing of duodenal ulcers. AB - The efficacy of sucralfate (1 g four times daily) and ranitidine (150 mg twice daily) in the short-term healing of duodenal ulcers has been assessed in a randomized single-blind trial involving 104 patients with three drop-outs. The healing rate at 3 weeks of 83% for sucralfate and 84% for ranitidine improved to 96% and 92%, respectively, at 6 weeks. The difference between the two treatment groups was not statistically significant. Smoking and male sex had no influence on the healing rates. Constipation was a prominent symptom in sucralfate treatment which was otherwise a safe and effective therapy. PMID- 3841080 TI - A complex set of early chorion DNA sequences from Bombyx mori. AB - A follicular cDNA library from Bombyx mori (576 clones) was screened to obtain a representative sample of chorion sequences differentially expressed during the early period of choriogenesis. Ten selected sequences were characterized by Northern analysis and by dot blots of stage-specific RNA. Five of these sequences (represented in the library by 24 clones) had the developmental specificity and transcript size expected of early chorion components; two sequences (37 clones) had the developmental specificity expected of middle and late chorion components; and three sequences (16 clones) were presumed to be non-chorion, since they are constitutive or disappear at the beginning of choriogenesis. The five recovered early chorion cDNA components have been sequenced, and define three distinct subfamilies of the chorion B multigene family, and two C type families. The complexity of the early chorion genes in B. mori is discussed. PMID- 3841081 TI - Development of an apical plasma membrane domain and tight junctions during histogenesis of the mammalian pancreas. AB - The role of tight junctions (zonula occludens) in the formation of apical plasma membrane (PM) domains was investigated in the embryonic rat pancreas. In the present study, lectin-rhodamine (WGA-TRITC and RCAII-TRITC) and lectin-gold (WGA Au and RCAII-Au) conjugates were used to monitor apical PM domain formation and freeze-fracture analysis was used to monitor tight junction formation in the pancreatic epithelium of embryonic, neonatal, and adult rats. Fluorescent and TEM analysis of WGA and RCAII binding indicated that an apical PM domain is formed as early as Day 13 of gestation in the pancreatic epithelium. While apical WGA binding remained into adult life, RCAII binding was lost by 1 day after birth. In contrast, tight junctions were not observed until Day 14 of gestation. At this time, tight junctions were found to be incomplete in formation and typically consisted of linear arrays of IMPs or discontinuous arrays of sealing strands (focal adherens). Continuous tight junctions were not completely formed until Day 15 of gestation. Continued development of tight junctions during gestation was characterized by (1) an increase in the number of sealing strands and (2) a more parallel arrangement of sealing strands within each junctional complex. By 8 weeks after birth, tight junctions were more loosely organized and contained fewer sealing strands as compared to that observed in the fetus. These results suggest that lateral diffusion of apical PM glycoconjugates may be restricted even in the absence of complete tight junctional complexes during development of the rat pancreas. PMID- 3841082 TI - COACH conference probes future information systems. PMID- 3841083 TI - [Significance of hormones in the amniotic fluid. II. STH and corticoids]. AB - We measured the concentrations of growth hormone and corticosteroids in the amniotic fluid of 50 pregnant diabetic women between the 33rd and 36th week of gestation. These values were compared with normal values obtained by amniocentesis in 275 healthy patients. In the amniotic fluid the concentration of growth hormone decreases during pregnancy. Between the 12th and 16th week we measured 50 ng/ml, whereas in the last four weeks we found 30 ng/ml. In the diabetic patient the amniotic fluid content of STH is lower; however, hyperinsulinaemia of the foetus does not further decrease the concentration of growth hormone. The corticosteroid concentration in the amniotic fluid increases from 10 ng/ml in the 4th month of pregnancy to 35 ng/ml at the end of pregnancy. In diabetic patients we found lower cortisol concentrations; the concentration decreased further in the case of major symptoms of diabetic foetopathy in the newborn. We believe that low corticoid concentration in the amniotic fluid of the diabetic mother may be responsible for the respiratory distress syndrome in the newborn. PMID- 3841084 TI - Reduction in levels of volatile N-nitrosamines in rubber nipples for babies' bottles. AB - Levels of volatile N-nitrosamines were determined in 189 samples of rubber nipples for babies' bottles. Domestic (US-manufactured) and imported rubber nipples for consumer and hospital use were analysed to determine compliance with the US Food and Drug Administration's action level of 60 ppb (b = 10(9] for total volatile N-nitrosamines. Only one sample was found to be in violation of the action level; it contained a total of 137 ppb N-nitrosamines. PMID- 3841085 TI - [Differential diagnosis and differential therapy of pseudo-obstruction of the colon]. PMID- 3841086 TI - [Sexually transmissible diseases in the anorectal area]. PMID- 3841087 TI - Inhibition of cholesterol biosynthesis by BM 15.766. AB - BM 15.766 (4-[2-[1-(4-chlorocinnamyl)piperazin-4-yl]ethyl]benzoic acid) showed a dose dependent action on 14C-acetate incorporation in cholesterol and intermediates including squalene by adult rat hepatocytes in primary monolayer culture. The biosynthesis of cholesterol could be reduced by more than 90%. Simultaneously, the 7-dehydrocholesterol level rose in the cells and, to a less marked extent, in the culture medium. PMID- 3841088 TI - Detection and isolation of filarial antigen from hydrocoele fluid and its use in diagnosis. PMID- 3841089 TI - Aplasia cutis congenita. PMID- 3841090 TI - Prognostic value of the heterologous ovum penetration test for human in vitro fertilization. AB - In order to evaluate the prognostic value of the heterologous ovum penetration test (HOP-test) the results of this test were compared with the fertilization rate of human ova in a programme for in vitro fertilization and embryo transfer (IVF/ET). Sperm from 29 husbands (23 normozoospermic and 6 with an abnormal semen profile) were exposed on one occasion to approximately 30 hamster ova in the HOP test and on 1 to 3 occasions to 1 to 4 preovulatory oocytes obtained from the respective wives. The mean penetration rate (+/- SEM) of the hamster ova was 43 +/- 4% (range: 0-62%) for the normozoospermic men, and 23 +/- 6% (range: 0-47%) for the men with abnormal semen profiles. In 20 out of 23 couples in which the husbands were normozoospermic, sperm penetrated the hamster ova as well as they fertilized human ova; however, in one couple, a false-positive result was obtained (penetration of the hamster ova and no fertilization of the human oocytes) and in one couple a false-negative result occurred. One negative IVF result was correctly predicted by the HOP-test. In the 6 patients with disturbed sperm motility no correct positive or negative results were obtained, whilst 4 false-positive and 2 false-negative results occurred using the HOP-test. Although the number of patients with disturbed sperm motility was small, the data suggest that the HOP-test is of limited value in predicting fertility in an IVF program for couples with reduced fertility. PMID- 3841091 TI - Inequalities in health in the city of Bristol: a preliminary review of statistical evidence. AB - This article compares statistical indicators of health with those of material and social deprivation for 28 wards of the city of Bristol, England. Four general indicators of health were examined-a combined rate per 1,000 live births of stillbirths and infant deaths; deaths of persons aged 15 to 64 per 1,000 of that age; deaths of persons aged 65 and over per 10,000 of that age, and numbers of babies born after 40 weeks gestation weighing less than 2,800 (and 2,500) grams per 1,000 births having that period of gestation. Measures of average and cumulative rank were used to augment tests of the significance of correlations between different indicators. The degree of rank consistency was high, and several wards at the top and the bottom of the rankings were clearly distinct on all indicators. Five indicators of deprivation were also examined-the percentages of: 1) households with fewer rooms than persons; 2) households lacking a car; 3) economically active persons seeking work; 4) children aged 5 to 15 who receive school meals free; and 5) households experiencing disconnection of electricity in the previous 12 months. Again the consistency of ranking according to the five indicators was high, with marked differences on all five indicators between the highest and lowest ranking wards. Between 1971 and 1981 some forms of deprivation increased in nearly all wards. According to some criteria, deprivation increased more in wards already most deprived in 1971 than in those least deprived. Finally, a strong association between the two sets of indicators was found. On the data available to health and planning authorities poor health is significantly correlated with deprivation. There are therefore implications for new forms of joint policy-making on the part of different departments of local and central government. PMID- 3841092 TI - Isolation, purification and 13C- and 1H-n.m.r. assignments of peptide [1-24] of human serum albumin. AB - Isolation, purification and 360 MHz 1H- and 13C-n.m.r. spectra of the residue corresponding to the NH2-terminal peptide fragment [1-24] of human serum albumin are reported. The various resonances have been assigned to individual amino acid residues and their spatial microenvironment has been determined in a straightforward manner on the basis of (i) pH dependent chemical shifts; (ii) combined use of multiple and selective proton-decoupled 1H- and 13C-n.m.r. spectra; (iii) the characteristic pK values exhibited by protons adjacent to sites of ionization in the molecule; and (iv) comparison of the spectra with the NH2-terminal tripeptide segment of human albumin. The pK values of different ionizable groups all fall in the normal range expected for each titrating sites and support a model of peptide fragment [1-24] in which there is no special structure-forming strong associations. These results are in agreement with those obtained by CD spectroscopy. PMID- 3841094 TI - Biotin concentrations in maternal plasma and milk during prolonged lactation. AB - We followed a group of exclusively breast feeding mothers for 12 months after delivery. They numbered 200 at delivery, 140 at 4 months of lactation, 116 at 6, 36 at 9 and 7 at 12 months. The milk concentration of biotin was very low at delivery and subsequently the (geometric) mean value remained at around 4.5 micrograms/l. The mean plasma value was 250 ng/l at delivery and stable (around 330 ng/l) throughout the lactation. There were large intra- and interindividual variations in the concentrations in both milk (from 0 to 27 micrograms/l) and plasma (from 142 to 1090 ng/l). The variations in the milk concentrations result in a similar variation in the biotin intake of the exclusively breast-fed infants. The current recommendations for biotin intake were not met by any of those infants but no manifestations of biotin deficiency were recorded. PMID- 3841093 TI - Biological activity of the three mono-beta-D-glucopyranosides of 1,25 dihydroxycholecalciferol. AB - The biological activity of the three mono-beta-D-glucopyranosides (mono glucosides) of 1,25-dihydroxycholecalciferol [1,25(OH)2D3] synthesized chemically has been studied in chicks and Japanese quails. While the 1- and the 3-glucoside showed no or only little effect on serum calcium, bone weight, calcium binding protein (CaBP) or calcium deposition in the egg shell, the 25-glucoside was found to be more than half as active as the aglycone 1,25(OH)2D3. The bioactivity of this glucoside parallels a higher binding constant to the intestinal 1,25(OH)2D3 receptor compared to those of the two other glucosides. PMID- 3841095 TI - Effect of neonatal undernutrition on rat brain gangliosides. AB - Effects of age and neonatal undernutrition were studied on total and fractions of gangliosides (GT1, GD1b, GD1a and GM1) in rat brain. GT1, GD1b + GD1a and GM1 are being presented here as polysialo-, disialo-, and monosialo-gangliosides. Undernutrition was induced by feeding mothers a low protein diet during lactation. The concentration of gangliosides increased to its maximum level by the age of 3 weeks and then decreased to its adult value by the age of 8 weeks. Polysialo gangliosides (GT1) comprised the maximum amount of gangliosides at birth (40%) and decreased to an adult value by 3 weeks of age. Disialo ganglioside GD1b increased to its maximum by 2 weeks and then leveled off. Disialo ganglioside GD1a and GM1 showed a decrease by 2 weeks and then reached to its adult value by 4 weeks. Neonatal undernutrition results in a decreased body and brain weight at all ages studied (7, 14 and 21 days) as well as total ganglioside concentration by 36%, 15% and 55% respectively at 7, 14 and 21 days. Polysialo gangliosides (GT1) constitute the major fraction of gangliosides at 21 days in undernourished rats as compared to controls, whereas mono- and di-sialo gangliosides remained decreased at all three ages compared to controls. This indicates the possibility of an underlying metabolic defect in undernourished animals. PMID- 3841096 TI - Botulinum chemodenervation for strabismus and other disorders. PMID- 3841097 TI - The recognition of psychological disturbance in a sexually transmitted diseases clinic. AB - This study examined the rate of psychological disturbance in a series of new patients attending a clinic for sexually transmitted diseases. Forty three per cent of patients were identified as probable psychiatric cases by the General Health Questionnaire. Medical staff in the clinic were asked to assess patients' level of psychological disturbance. Disagreement between GHQ and doctors' ratings occurred in 41% of patients. Some patient and doctor characteristics were examined that might be associated with disagreement, and the results are discussed in terms of possible social--psychological influences upon doctors' recognition of psychological disturbance. PMID- 3841098 TI - Digital synthesis of lung nodules. AB - Studies evaluating observer accuracy and visual perception of pulmonary nodules usually are based upon test films obtained from clinical practice in patients with proven pulmonary nodules. Unfortunately, such nodules do not always occur in the optimal size and location to facilitate testing. Such studies would be enhanced by the ability to place nodules of desired size and location on chest radiographs. This report describes a method of placing a computer-generated (synthesized) nodule on a digitized chest radiograph. To demonstrate the similarity of these synthesized nodules to real nodules, each digitized radiograph with a computer-generated nodule was paired with a digitized chest radiograph of a patient with a clinically proven pulmonary nodule. A total of 22 pairs of chest radiographs were then shown to 13 radiologists, who were asked to distinguish the synthesized nodule from the real nodule. With this two alternative forced-choice test, the radiologists were only able to distinguish the synthesized nodule in 51% of the cases, strongly suggesting that computer generated nodules may be used to simulate real pulmonary nodules in future tests of nodule detection. PMID- 3841099 TI - Catabolism of purine ribonucleotides and glucocorticoid hormones in the rat. AB - We have studied, in vivo, the catabolism of purine nucleotides (inosinic, guanylic and adenylic acid) in the rat and its regulation by the glucocorticoid hormones, following the behavior of liver xanthine oxidase and the incorporation of formate-14C into urinary allantoin. An original method for purification of urinary allantoin has been developed. A slight acceleration of purine catabolism in adrenalectomized rats--both treated and untreated with corticosterone--was observed, while the normal behavior was restored during cortisone and cortisol treatment. The liver xanthine oxidase activity is unchanged in the different conditions. We conclude that the glucocorticoid hormones have only a slight, not relevant and probably not specific effect on purine catabolism in the whole body. PMID- 3841100 TI - Promotion by tetrameric catechoylamide ligands and CaNa3-DTPA of the dissociation in vitro of the Pu-transferrin complex formed after intravenous injection of Pu tri-N-butylphosphate. PMID- 3841101 TI - Hemoglobin Daneshgah-Tehran or alpha 2(72) (EF1) His----Arg beta 2 in an Argentinean family. PMID- 3841102 TI - Retrograde tracing of neural pathways with a protein-gold complex. I. Light microscopic detection after silver intensification. AB - In this study I have used a tracer complex made of wheat germ agglutinin horseradish peroxidase conjugate (WGA*HRP) coupled to colloidal gold for retrograde tracing of neuronal pathways at the light microscopic level. Visualization of the gold was achieved by silver precipitation (the gold silver intensification method) with gold particles acting as specific cores of nucleation. The presence of horseradish peroxidase in the protein conjugate allowed this method to be compared with classical histochemistry using tetramethylbenzidine as a chromogen. The gold silver intensification method proved to be reliable, specific and sensitive. It has been demonstrated to be useful with fixatives containing a high percentage of paraformaldehyde and compatible with histochemical procedures to show projections of transmitter specific pathways. PMID- 3841103 TI - Ultrastructural localization of uteroglobin immunoreactivity in rabbit lung and endometrium, and rat ventral prostate. AB - Recent biochemical studies have demonstrated amino acid sequence homologies between uteroglobin from rabbit endometrium and prostatic binding protein from rat ventral prostate. We have studied the ultrastructural distribution of uteroglobin-immunoreactive material in rabbit lung and endometrium and rat ventral prostate using an uteroglobin antibody raised in guinea pigs. Secretory granules of bronchiolar Clara cells, endometrial non-ciliated cells and rat prostate secretory cells gave a positive immunoreaction when this antibody was used. The results indicate a close relationship of immunoreactive epitopes of proteins present in those secretory cells. The functional properties of these proteins (glycoproteins, steroid binding, androgen-dependent secretion) suggest a close functional relationship, for instance a surface action such as coating, capping, masking or lubrication. PMID- 3841105 TI - Colleges of osteopathic medicine: a profile of growth. PMID- 3841104 TI - Lectin-binding patterns in the developing tooth. AB - The lectin-binding patterns of the cells involved in amelogenesis and dentinogenesis in developing teeth of rats were studied. Undifferentiated odontogenic epithelia exhibited very slight staining with almost all of the lectins examined. The lectin-staining affinities of secretory ameloblasts could be divided into two categories: Concanavalin-A (Con-A), Wheat germ agglutinin (WGA) and Soybean agglutinin (SBA) binding occurred from the middle to apical cytoplasm, whereas Ricinus communis agglutinin-I (RCA-I) and Ulex europeus I (UEA I) binding predominated in the basal regions. The cells of the stratum intermedium exhibited relatively strange lectin staining, which appeared to be dependent on ameloblastic maturation. The basement membranes in undifferentiated epithelia were markedly positive for lectin binding. Odontoblasts showed moderate Con-A staining on the apical side of the cells, as well as slight-to-moderate reactions with WGA and SBA. Pulp cells and dental papillae showed slight-to moderate lectin staining, and predentin and dentin were also moderately positive for Con-A and RCA-I binding and slightly so for WGA and SBA. The lectin-binding affinities were enhanced during the formation of enamel and dentin, and appeared to be dependent on the degree of cellular differentiation in ameloblasts and odontoblasts. PMID- 3841106 TI - Trends in postdoctoral training. PMID- 3841107 TI - The AOA continuing medical education program: the new provisions. PMID- 3841108 TI - Osteopathic certification: the question of jurisdiction. PMID- 3841109 TI - Osteopathic research priorities. PMID- 3841110 TI - A model curriculum for the internship year and the first-year residency in osteopathic general practice: a progress report. PMID- 3841111 TI - Viscerosomatic reflexes: a review. PMID- 3841112 TI - Can a computer dream? PMID- 3841113 TI - Effect of ivermectin on murine mites. AB - Two SC injections of ivermectin (200 micrograms/kg of body weight), given one week apart, safely and effectively eliminated mite infestations (Myocoptes musculinus and Myobia musculi) from laboratory mice. When one 200 micrograms/kg or one 100 micrograms/kg injection of ivermectin was given to the mice, mite infestations were reduced temporarily. PMID- 3841114 TI - Ivermectin treatment of lice infestations in two elephant species. PMID- 3841115 TI - Treatment of sarcoptic mange in a dromedary camel. PMID- 3841116 TI - Lymphosarcoma in a llama. PMID- 3841117 TI - Neodymium:YAG laser interaction with intraocular lenses: an in vitro toxicity assay. AB - Use of the Nd:YAG laser is an effective technique to open an opacified posterior lens capsule. However, in the presence of a posterior chamber intraocular lens (IOL), precise focusing of the laser on the capsule is required to avoid pitting the lens optic. The question has been raised whether toxic products may result from laser damage to the IOL. We addressed this issue in the present study by exposing primary human corneal endothelial cell and human corneal organ cultures to solutions produced by purposefully hitting IOLs immersed in cell growth medium with a Nd:YAG laser. The lenses studied were lathe-cut polymethylmethacrylate (PMMA), injection-molded non-UV PMMA, injection-molded UV PMMA, and cast-molded UV PMMA. Samples of each material were irradiated in a holder containing 1 ml of cell culture medium using the following conditions: 5, 10, and 50 laser bursts at 10 millijoules (mJ), and 50 laser bursts at 5 mJ. The solutions were applied to the endothelial cell cultures (all materials) and to the corneal organ cultures (injection-molded non-UV lenses only). There was no toxicity in either assay for any of the materials studied. PMID- 3841118 TI - Intraocular lens damage associated with posterior capsulotomy: a comparison of intraocular lens designs and four different Nd:YAG laser instruments. AB - A comparison of intraocular lens damage associated with four different Nd:YAG laser instruments was performed using polarized light, scanning electron microscopy, and a qualitative measurement of optical resolution. Five intraocular lens designs, each of which provided a different separation between the intraocular lens and a model of the posterior capsule, were tested with each laser instrument. There was no statistically significant difference in the frequency of lens pitting caused by each laser. Intraocular lenses designed with a theoretical separation of 0.25 mm or more between the lens and the posterior capsule sustained no damage with any of the laser instruments used in this study. PMID- 3841119 TI - Neodymium:YAG laser cutting of intraocular lens haptics. AB - Neodymium:YAG laser cutting of polymethylmethacrylate and polypropylene anterior chamber and posterior chamber intraocular lens haptics was studied in terms of ease of transection and physical structure of the cut areas as seen by scanning electron microscopy. A marked difference was discovered, with the polymethylmethacrylate cutting easily along transverse planes, whereas the polypropylene resisted cutting along longitudinal fibers. Clinical guidelines are presented. PMID- 3841120 TI - Neodymium:YAG laser capsulotomy of secondary membranes in the pediatric population. AB - Posterior capsulotomy is occasionally performed at the conclusion of extracapsular cataract extraction because of the high incidence of secondary membrane formation. Using a Nd:YAG laser we successfully performed posterior capsulotomies on 16 children who developed secondary membranes following extracapsular cataract extraction in which the posterior capsule was left intact. Eleven patients had congenital cataracts and five had acquired cataracts. The youngest patient was four years. All had improvement in visual acuity. Preserving most of the posterior capsule provides additional support to the eye and has been associated with a decreased incidence of cystoid macular edema. It also allows secondary implantation of a posterior chamber intraocular lens in the future. PMID- 3841121 TI - PD 118,576: a new antitumor macrolide antibiotic. AB - The isolation and properties of PD 118,576, a new cytotoxic antibiotic obtained from the culture broth of a Streptomyces sp., are described. The structure of this compound was established by spectral analyses of the parent compound and its tri-O-acetyl derivative. PD 118,576 proved to be related to the bafilomycins and therefore is a new member of this recently discovered family of macrolide antibiotics. PMID- 3841122 TI - Biphenomycins A and B, novel peptide antibiotics. I. Taxonomy, fermentation, isolation and characterization. AB - Biphenomycin A, C23H28N4O8, and biphenomycin B, C23H28N4O7, were isolated from the cultured broth of Streptomyces griseorubiginosus No. 43708. The antibiotics are active in vitro and in vivo against bacteria, and are especially potent against Gram-positive bacteria. The acute toxicity of biphenomycin A is very low in mice. PMID- 3841123 TI - Biphenomycins A and B, novel peptide antibiotics. II. Structural elucidation of biphenomycins A and B. AB - The structures of biphenomycins A and B, novel peptide antibiotics produced by a strain of Streptomyces, have been established as 1 and 2, respectively, on the basis of spectroscopic and chemical evidence. They are unique in that they are cyclic peptides containing a biphenyl moiety included in a 15-membered ring and show potent antibacterial activities especially against Gram-positive bacteria. PMID- 3841124 TI - Antiviral activity and its mechanism of guanine 7-N-oxide on DNA and RNA viruses derived from salmonid. AB - Guanine 7-N-oxide produced by Streptomyces sp. was found to inhibit in vitro the replication of herpes virus (Oncorhynchus masou virus, OMV), rhabdo virus (infectious hematopoietic necrosis virus, IHNV) and a bi-segmented double-strand virus (infectious pancreatic necrosis virus, IPNV) derived from salmonids with IC50 values of about 10 micrograms/ml, 20 micrograms/ml and 32 micrograms/ml, respectively. The agent was not toxic for the host cells (chinook salmon embryo, CHSE-214) at the IC50 concentrations. Labeling of IHNV viral RNA and host cellular DNA and RNA with [3H]uridine and [3H]thymidine during drug treatment showed that guanine 7-N-oxide did not reduce the incorporation of these precusors into RNA and DNA. The anti-IHNV activity of guanine 7-N-oxide was enhanced synergistically by neplanocin A, an inhibitor of RNA methylation. The mechanism of action of guanine 7-N-oxide is discussed, in regard to maturation of viral messenger RNA including capping. PMID- 3841125 TI - Hashimoto's thyroiditis associated with Hoffman's syndrome and acute cricoarytenoid arthritis. PMID- 3841126 TI - Pharmacologic assessment of regimen chemosensitivity in the soft-agar assay: effect of oxygen on human tumors. AB - The influence of oxygen on the growth and the in vitro chemosensitivity of human tumor cells was studied in the soft-agar assay. Tumor cells of pancreatic and ovarian origin prefer a reduced oxygen atmosphere for colony formation, whereas those of pulmonary origin grow better in 20% oxygen. Depending on the physiologic oxygen tension and the histologic origin of a particular cancer type, the in vitro chemosensitivity of many drug obtained with the conventional culture system could be inadequately assessed. The in vitro responses of tumor cells to combinations of drugs were measured by the regimen efficacy index (REI) method. The REI delineates the possible regimen enhancement or regimen default based on the in vitro chemosensitivity of the individual agents tested in the assay. In vitro regimen enhancement was observed only in ascites incubated in a reduced oxygen atmosphere with two-drug combinations. However, regardless of the oxygen gradients used, regimen default was seen in cancer cells of solid tumors treated with all combinations of drugs tested. This study suggests further investigation on the effects of oxygen in the soft-agar assay, and proposes the novel use of the REI method for evaluating the in vitro regimen chemosensitivity of human tumor cells. PMID- 3841127 TI - Monitoring immunocompetent cells in the peripheral blood of stomach cancer patients after splenectomy and gastrectomy. AB - The status of lymphocyte subpopulations in splenectomized (Sx) stomach cancer patients (SCa-patients), assessed by monoclonal antibodies, has not been evaluated so far. Therefore subsets of peripheral white blood cells were monitored prior to and following surgical treatment in gastrectomized (Gx) and Sx (n = 64) as well as in non-Sx patients (n = 39). Postoperative surgical complications were more frequent in the Sx group. However, the 2-year survival rate of this group was higher than in non-Sx patients. Lymphocytes were significantly decreased in both groups of patients during the early postoperative period. Monocytes and polymorphonuclear cells (PMN) increased correspondingly. A significant loss of lymphocytes and their subsets in Sx patients was observed during the 1st-3rd postoperative days as compared to the Gx only patients. The OKT4/OKT8 ratios did not differ in either group of patients, whereas the OKT3+anti-B-Ly2 ratio was significantly increased in Sx patients 1 to 3 days postoperatively. PMID- 3841128 TI - Effect of polybrene on isolation of Chlamydia trachomatis from clinical specimens. AB - Polybrene treatment of McCoy cells was used to increase the infectivity of Chlamydia trachomatis in vitro. The isolation rate for C. trachomatis in 500 specimens from males and females attending a sexually transmitted disease clinic and other clinics increased by 6.8% with the Polybrene treatment. The data also suggested that this treatment facilitated the diagnosis of low grade or latent infections. PMID- 3841129 TI - 1,25-Dihydroxyvitamin D increases calmodulin binding to specific proteins in the chick duodenal brush border membrane. AB - In previous studies we demonstrated that the biologically active vitamin D metabolite 1,25-dihydroxyvitamin D [1,25(OH)2D] increased the calmodulin (CaM) content of chick duodenal brush border membranes (BBM) without increasing the total cellular CaM content. Therefore, we evaluated the binding of CaM to discrete proteins in the BBM and determined whether 1,25(OH)2D could influence such binding. We observed one major and several minor CaM-binding bands on autoradiograms of sodium dodecyl sulfate polyacrylamide gels incubated with [125I]CaM. The major band had a molecular weight of 102,000-105,000. It bound CaM even in the presence of EGTA, but not in the presence of trifluoperazine or excess nonradioactive CaM. The administration of 1,25(OH)2D increased the apparent binding of CaM to this protein as assessed by densitometry of the autoradiogram. This increase in CaM binding coincided with the increased ability of the same BBM vesicles to accumulate calcium. Cycloheximide in doses that markedly reduced the incorporation of [35S]methionine into BBM proteins did not reduce the ability of 1,25-dihydroxyvitamin D3 to stimulate either calcium uptake by the BBM vesicles or CaM binding to the 102,000-105,000-mol-wt protein. These results suggest that 1,25(OH)2D administration increases the CaM content of duodenal BBM by increasing the ability of a 102,000-105,000-mol-wt protein to bind CaM. This mechanism may underlie the ability of 1,25(OH)2D to stimulate calcium movement across the intestinal BBM. PMID- 3841130 TI - Effect of meals on the kinetics of etretinate. AB - Eight healthy men received 100 mg oral doses of etretinate separated by two-week washout periods in an open, randomized, crossover study. Etretinate was administered during a complete fast, with a standard high fat breakfast, a standard high carbohydrate breakfast, and 16 ounces of whole milk. Plasma samples were obtained at specific times over a 48-hour period. Plasma concentrations of etretinate as well as two of its major metabolites were determined by a specific, reverse-phase, high-performance liquid chromatography method. Plasma concentrations of etretinate were greater when administered with a high fat meal and whole milk compared to ingestion with a high carbohydrate meal or during a complete fast. In contrast, there was no increase in the plasma concentrations of the active metabolites following any of the meals. These data indicate that chronic dosing of etretinate with milk or a high fat meal compared with fasting conditions will result in higher concentrations of etretinate, which may ultimately lead to higher metabolite concentrations. PMID- 3841131 TI - The afferent connections of the substantia innominata in the monkey, Macaca fascicularis. AB - The afferent connections of the substantia innominata and the magnocellular nuclei within it (the nucleus of the horizontal limb of the diagonal band, NHDB, and the nucleus basalis of Meynert, NBM) have been studied with anterograde and retrograde axonal tracing techniques. Prominent inputs arise in the amygdaloid complex, restricted areas of the cerebral cortex, parts of the thalamus and hypothalamus, and nuclei of the lower brainstem. Autoradiographic tracing experiments indicate that the amygdaloid fibers are distributed throughout the NHDB and the NBM, and to a lesser extent to the ventral pallidum. Relatively few fibers innervate the more medially located nucleus of the vertical limb of the diagonal band (NVDB) and the medial septal nucleus. Visualization of the amygdalofugal fibers with the tracer PHA-L (Phaseolus vulgaris leuco-agglutinin) shows that they have varicosities resembling boutons en passant along their length in the substantia innominata. Retrograde tracing experiments using WGA-HRP indicate that the cells of origin of the projection from the amygdala are concentrated in the parvicellular basal nucleus, the caudal part of the magnocellular basal nucleus, the magnocellular accessory basal nucleus, and the central nucleus. Relatively few fibers to the substantia innominata arise in the rostrodorsal part of the magnocellular basal nucleus, or in the lateral or parvicellular accessory basal nuclei. Cortical cells projecting to the substantia innominata were retrogradely labeled in the orbitofrontal cortex (including areas 11-14 and 25), the rostral insula (especially the agranular area), the rostroventral temporal cortex (including areas 35, 36, and parts of TG and TE), and the piriform and entorhinal cortices. The projections from the orbital and rostral temporal cortex were confirmed with anterograde tracers. Projections to the substantia innominata were not found from the more lateral, dorsal or caudal parts of the cerebral cortex, although fibers from temporal area TA may pass through the dendritic field of the most caudal cells of the NBM. Diencephalic cells projecting to the substantia innominata are distributed diffusely throughout the preoptic area and hypothalamus, with higher concentration in the lateral preoptic area and in the pre-, supra-, and tubero-mammillary nuclei. Cells are also found in the midline thalamic nuclei and in the region between the peripeduncular and subparafascicular nuclei.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3841132 TI - The somatotopic organization of forelimb cutaneous nerves in the brachial dorsal horn: an anatomical study in the cat. AB - The projection of forelimb cutaneous nerves to the brachial dorsal horn was studied in the cat by the transganglionic transport method. The results demonstrate a precise somatotopic termination pattern. Afferent nerves from the paw occupy the largest area, with the palm represented most medially in the dorsal horn, followed progressively more laterally by the representations for the palmar and dorsal surfaces of the digits and the dorsum of the paw. The digits are represented in a longitudinal sequence, with the first digit in the caudal part of C6 and the fifth in the caudal part of C8. The projections of the wrist and arm are split, with the line of discontinuity located along the ventral surface of the limb, so that the radial side is represented rostral to the paw and the ulnar side caudal to the paw, with the dorsal surface of the arm represented lateral to the paw. Nerves innervating the skin of the back project to the lateralmost part of the dorsal horn. The degree of overlap or separation of the terminal fields of the nerves along the mediolateral axis of the dorsal horn seems to correspond to the degree of overlap or separation of the peripheral innervation fields. However, along the rostrocaudal axis there appears to be an overlap for which there is no counterpart peripherally. PMID- 3841133 TI - Cutaneous non-X histiocytosis: clinical and histologic features and response to dermabrasion. AB - A 22-year-old man presented with a progressive cutaneous eruption consisting of reddish-yellow papules and plaques on his face, which was histopathologically characteristic of a non-X histiocytosis. No systemic involvement was present. Monoclonal antibody staining of the tissue infiltrate was strongly positive for only OKT6. On electron microscopy, Langerhans (Birbeck) granules were not found. Four years of conservative treatment was unsuccessful. Spontaneous involution did not occur. Dermabrasion not only produced excellent cosmetic results, but on rebiopsy the histiocytic infiltrate was absent. There has been no recurrence in treated areas after 18 months. PMID- 3841134 TI - [Interaction of mutant white, aphakia and ocular retardation genes in the mouse]. PMID- 3841135 TI - The hepatotoxicity of carbon disulphide in sheep. AB - Carbon Disulphide (CS2) caused liver injury when dosed orally (intraruminally) at 0.05 ml per kg body weight to overnight fasted sheep which had been given 200 mg kg-1 DDT intraruminally 1 week previously to enhance the hepatic mixed function oxygenases. The liver lesion was a periacinar hepatocellular vacuolar degeneration, fully developed at 24 h and lasting from 4 to 5 days after which the hepatic morphology returned to normal. At 24 h after dosing with CS2 there was an increase in total liver water, sodium and potassium ions but without an increase in the concentration of these cations in total liver water, and a 50% reduction in microsomal cytochrome P450 levels. Calcium concentration was either unchanged or only slightly increased. The cytoplasmic vacuoles were mainly distensions of the rough endoplasmic reticulum and contained fine amorphous or fibrillary material, probably originating from damaged smooth endoplasmic reticulum membranes. The transient influx of fluid into these organelles is thought to be due to osmotic action generated by molecules derived from the latter macromolecular membrane fragments. The lesion resembles that seen in the rat due to CS2 after pretreatment with phenobarbitone. In situations in which sheep are drenched with CS2 and CCl4 in combination, it is suggested that the development of hepatic periacinar hydropic change due to the CS2 in animals normally susceptible to CCl4 because of enhanced microsomal cytochrome P450 levels would provide a better chance of survival than if CCl4 alone was administered and extensive periacinar coagulative necrosis occurred. PMID- 3841137 TI - [Fetal sinusoidal cardiac rhythm]. AB - The authors describe a case of fetal sinusoidal cardiac rhythm which was observed during a feto-maternal transfusion. This type of cardiographic tracing is found similarly in certain cases of severe fetal anaemia or of isolated fetal hypoxia. It is also found in amnionitis and associated with various iatrogenic factors such as the administration of general anaesthesia and fetoscopy. The literature does not show a consensus when trying to find the criteria for defining this type of rhythm. The aetiology of the pathological condition is much in dispute. The prognosis does not have to be all that serious. In conclusion, the authors suggest the attitude of management to lessen the poor prognosis of these sinusoidal rhythms and help towards a favourable outcome. PMID- 3841136 TI - Hyperthyroidism due to Graves' disease and due to autonomous goiter. AB - An attempt was made to classify 326 patients with hyperthyroidism due to Graves' disease and due to autonomous goiter in an area of endemic iodine deficient goiter using the following two sets of criteria: Primary criteria: the presence of endocrine ophthalmopathy (Graves' disease) and the absence of endocrine ophthalmopathy and the absence of microsomal antibodies greater than or equal to 1:1600 (autonomous goiter). Sixty-nine percent of the patients could be divided in the two groups with the aid of these criteria. Secondary criteria: age greater than 50 years, presence of a goiter, presence of thyroid nodules, activity distribution in the scan, iodine intake determined by iodine excretion in the urine. These criteria had to be applied in the 31% of the patients who could not be divided into one of the two groups using the primary criteria. The secondary criteria were accumulative. Using these criteria 55% of the 326 patients were classified as having Graves' disease and 45% as having autonomous goiter. The probability of correct grouping when both primary and secondary criteria were applied was estimated to be 90% compared to 54% when we used only the classical terms, i.e. endocrine ophthalmopathy and diffuse goiter on the one hand and multinodular goiter without endocrine ophthalmopathy on the other hand. In a second group of 120 hyperthyroid patients classified in this way, thyrotropin displacing activity was determined independently. Its prevalence was 79% in patients classified as having Graves' disease but only 3% in those classified as having autonomous goiter. The prevalence of TDA observed in patients who presumably had autonomous goiter was in the same range as in the following groups: 45 normal individuals; 126 patients with euthyroid goiter; and in 112 patients with euthyroid and hyperthyroid autonomous adenoma.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841138 TI - [Tubal choriocarcinoma: a case]. AB - The authors report a case history of a tubal choriocarcinoma occurring in a woman of 38 years of age. This was 6 years after her second and last pregnancy and was diagnosed before operation. A summary of the complementary examinations is presented: An ultrasound showing a non-specific mass whose value therefore was somewhat limited; A hysterosalpingogram which showed an irregular tubal image suggestive of a cancer of the tube; Pelvic arteriography that made the signs of choriocarcinoma fairly clear. Discussion then developed in looking at the literature of those diagnostic features that are usually made. Most often this is by laparatomy when a ruptured extra-uterine pregnancy is suspected or when suspicion rests on a twisted ovarian cyst, a uterine fibroid, a tubo-ovarian abscess or blood in the peritoneal cavity in the third trimester of pregnancy, treatment, which is best given as a combination of surgery and chemotherapy, and pathogenic aetiology. It does seem that there are two principal mechanisms, the first being a malignant transformation of a tubal pregnancy, or a choriocarcinoma arising de novo without an ectopic pregnancy. PMID- 3841139 TI - Blood velocities to the female breast during lactation and following oxytocin injections. AB - A heterodyne pulsed doppler velocitymeter was used to measure blood velocities in the mammary branch of the lateral thoracic artery during breast-feeding and after oxytocin injections. A few heart beats before the mother felt the milk-ejection reflex, blood velocities fell rapidly by 40-50%, and then increased during the next 1-2 min. Synthetic oxytocin was given intravenously to lactating women, both in doses believed to be physiological in milk-ejection and larger, and the same velocity changes occurred. Synthetic oxytocin was also given to non-lactating women who had never been pregnant or who had breast-fed previously and to one man. In these a rapid increase in velocity was observed after about a half a minute, lasting for 1-2 min. In addition to the short-term effects of breast feeding, blood velocity increased rapidly towards the end of nursing or a few minutes afterwards, with a maximal increase of 25-50%. It then slowly returned to pre-nursing values during the following 30-60 min. This pattern was seen in both breasts, independent of which breast the infant had been sucking. PMID- 3841140 TI - Changes in the corpora cavernosa of impotent diabetics: comparing histological with clinical findings. AB - In our study, the histological findings showed significant pathological fibrosis affecting the penile arteries and erectile tissue, but no direct damage to the penile nerve fibers. Forty percent of our patients with clinical evidence of penile neuropathies showed no histological evidence to support a neurogenic mechanism of their impotence. In addition, to the consistent vascular lesion found in 90 percent of impotent diabetics in our study, a fibroproliferation of the erectile tissue was predominantly found as well. Our histopathological study seemed to correlate with our previous clinical finding. Does this confirmation of the vascular etiology as a primary cause of impotence in diabetics have practical application? The answer must be "yes". If new diagnostic developments contribute to making an earlier diagnosis of this disease, then more conservative or aggressive treatment of the impotent diabetic will become a reality. PMID- 3841141 TI - [Nephritogenic glycopeptide (nephritogenoside): its existence in the urine of toxemia patients]. AB - Previously we reported that we succeeded in isolating from human full term placenta, glycopeptide which was immunologically the same as nephritogenic glycopeptide (Nephritogenoside) prepared from human renal GBM (glomerular basement membrane). This time to clarify the correlation between the pathology of toxemia and Nephritogenoside, we examined the existence of Nephritogenoside in the urine of toxemia patients. To purify Nephritogenoside from the urine powder of toxemia patients, we use the same procedures (enzyme digestion, Con A affinity column chromatography e.t.c.) as used in purifying Nephritogenoside from human full term placental TrBM (trophoblast basement membrane). In the urine of toxemia patients we clarified the existence of glycopeptide, which had specific affinity with Con A and was immunologically the same as Nephritogenoside. The existence of Nephritogenoside in the urine of toxemia patients further strengthened the possibility of a relationship between Nephritogenoside and the pathology of toxemia. PMID- 3841142 TI - [Full-dose CHOP chemotherapy--feasibility and influence upon radiotherapy]. PMID- 3841143 TI - The use of a computer in a hand clinic. AB - We have developed a computerised system for the storage, retrieval and analysis of the workload of a hand clinic. In a study of 800 patients we have found it superior to a punched card system collecting similar information. The computer system functioned reliably and achieved its user specification. It should prove a useful tool in helping a surgeon in matters of audit, research and disease or accident prevention but its long term performance in this regard requires evaluation. PMID- 3841144 TI - [Abdominal aortic aneurysm due to Salmonella. Apropos of a rupture case treated surgically with an in situ prosthesis]. AB - A patient with ruptured aneurysm of the infrarenal abdominal aorta was treated by reestablishing arterial continuity, by means of a prosthesis in situ, and has been followed up for 16 months. This type of lesion raises difficulties with respect to surgical strategy, conventional treatment consisting of total resection of sac with infrarenal ligature of abdominal aorta combined with revascularization by extra-anatomic bypass surgery. Results in the case reported were positive and demonstrate that the operation performed may be a valid alternative if, after effective long-term antibiotic therapy, findings on clinical, biologic and ultrasound follow-up reviews remain normal. PMID- 3841145 TI - Review of hospital data processing in the United States (1982-1984). PMID- 3841146 TI - Detection and characterization of spatial pattern in chimaeric tissue. AB - The mosaic pattern of patches of crypts of Lieberkuhn in chimaeric C57BL/6JLac (B6)----DDK mouse small intestine, demonstrated using Dolichos biflorus agglutinin as strain-specific marker, is quantitatively examined using the Greig Smith analysis of variance. This analysis, widely used in ecological research, provides a method to detect and characterize pattern at various scales. The analysis demonstrates that B6 patches are non-randomly distributed at all scales examined. A consistent increase in the intensity of pattern at one particular scale over all replicate samples identifies 'clusters of clusters' which probably are territories of 'descendent' clones. The sizes of descendent clones, either in terms of numbers of patches or total numbers of crypts, are highly variable. A steady reduction in the strength of pattern from proximal to distal is found. The Greig-Smith analysis of variance provides a valuable method for the analysis of pattern in chimaeric tissue. PMID- 3841147 TI - 14 beta-Hydroxygelsedine, a new oxindole alkaloid from Gelsemium sempervirens. AB - An extract of the stem of Gelsemium sempervirens has afforded a new oxindole alkaloid, 14 beta-hydroxygelsedine, whose structure and stereochemistry were deduced by spectral methods, principally high resolution 1H nmr, 2-D COSY, and decoupling experiments. PMID- 3841148 TI - The isolation and characterization of a new tetrahydroprotoberberine alkaloid from Corydalis clarkei. AB - The MeOH extract of Corydalis clarkei Prain yielded two tetrahydroprotoberberine alkaloids that bear the unusual 1,2- and 9, 10-tetraoxygenated substitution pattern observed previously only in caseanidine . The alkaloids have been identified as caseanidine (1) and the new alkaloid, clarkeanidine (2). The 1H- and 13C-nmr shifts of both alkaloids have been assigned unambiguously using 2-D nmr. The elucidation of the structure of 2 was achieved by comparison of the 1H- and 13C-nmr spectra of 2 with those of caseanidine coupled with additional spectroscopic evidence. PMID- 3841149 TI - Delayed onset dystonia. PMID- 3841150 TI - Metabolism of leucine in fibroblasts from patients with deficiencies in each of the major catabolic enzymes: branched-chain ketoacid dehydrogenase, isovaleryl CoA dehydrogenase, 3-methylcrotonyl-CoA carboxylase, 3-methylglutaconyl-CoA hydratase, and 3-hydroxy-3-methylglutaryl-CoA lyase. AB - The metabolism of leucine was studied in cultured human fibroblasts derived from patients with defects in each of the major steps in the catabolism of the amino acid. Intact fibroblasts were incubated with [U-14C]leucine and the organic acid products were isolated by liquid partition chromatography. In control fibroblasts the major product of leucine was 3-hydroxyisovaleric acid. This was also the case for fibroblasts with deficiency of 3-hydroxy-3-methylglutaryl-CoA lyase, 3 methylcrotonyl-CoA carboxylase and 3-methylglutaconyl-CoA hydratase. There was little or no accumulation of the compound with fibroblasts from patients with maple syrup urine disease and isovaleric acidemia. PMID- 3841151 TI - Pharmacokinetics of ivermectin administered intravenously to cattle. AB - Ivermectin, a macrocyclic lactone disaccharide antiparasitic agent, was administered intravenously to six young calves (one bull, five steers) as a bolus dose of 200 micrograms/kg. The disposition kinetics of ivermectin in cattle can be described by a three-compartment open model with elimination from the central compartment. Compartmental analysis yielded mean parameters as follows: terminal elimination rate constant (beta) = 0.258 d-1, biological half-life (t 1/2 beta) = 2.7 d; apparent volume of distribution of the central compartment (Vd1) = 0.45 L/kg; apparent volume of distribution at steady state (Vdss) = 2.4 L/kg. The area under the plasma concentration-time curve (AUC) was 254 ng X d/mL. Noncompartmental parameters, obtained by utilizing statistical moment theory, mean residence time (MRT), clearance (CL), and Vdss were calculated to be 2.8 d, 0.79 L/kg X d, and 2.2 L/kg, respectively. PMID- 3841152 TI - Oral controlled-release delivery of ivermectin in cattle via an osmotic pump. AB - Ivermectin, a potent antiparasitic agent with activity against internal and external parasites, was delivered to cattle at a controlled zero-order rate for 35 d via orally administered, specially weighted, ALZET 2ML4 osmotic pumps. The osmotic pumps delivered the drug consistently over the trial period. Steady-state levels in plasma were achieved in 7-14 d, and plasma concentration depletion curves were observed to start at approximately day 35, the theoretical delivery lifetime of the osmotic pumps. Bioavailability was estimated to be 40%, and dose rate-plasma steady-state interrelationships were shown to be linear. PMID- 3841153 TI - Isolation, structural elucidation, and chemical synthesis of 2-hydroxy-3 octadecyl-5-methoxy-1,4-benzoquinone (irisoquin), a cytotoxic constituent of Iris missouriensis. AB - As part of a continuing effort to provide novel agents of potential value in cancer chemotherapy, 2-hydroxy-3-octadecyl-5-methoxy-1,4-benzoquinone (irisoquin) was identified as a component of Iris missouriensis. This novel species demonstrated cytotoxic activity with cultured KB and P-388 cells (ED50 = 1.8 and 0.03 microgram/mL, respectively). The structure was assigned on the basis of spectral analyses and The structure was assigned on the basis of spectral analyses and confirmed by chemical synthesis. The latter provides a facile method for the production of irisoquin and structural derivatives that may be of value for the examination of structure-activity relationships. A closely related compound, 3-octadecyl-5-methoxy-1,4-benzoquinone (deoxyirisoquin), was also isolated from Iris missouriensis, prepared synthetically, and found to be devoid of cytotoxic activity. PMID- 3841154 TI - Effect of a new hypoglycemic agent (MDL-310) on glucose metabolism. AB - N-[3-(dimethylamino)-2-propoxy-2-propenylidene]- N-methylmethanaminium as the iodide or camsylate salt (MDL-310) is a newly reported chemical which has been shown to produce hypoglycemia in vivo. The studies reported here describe in vivo and in vitro effects of MDL-310 on carbohydrate metabolism. In nonfasted mice, MDL-310 decreased liver glycogen and then produced hypoglycemia, concomitant with a near total depletion of liver glycogen stores. In fasted rats, nonhypoglycemic doses of MDL-310 increased glucose production and utilization as determined by tracer studies with [6-3H]glucose. Hypoglycemic doses decreased glucose production and increased blood lactate, which suggests an inhibition of gluconeogenesis. In isolated rat hepatocytes MDL-310, at concentrations of greater than or equal to 5 X 10(-6) M, inhibited gluconeogenesis from lactate (10 mM) plus pyruvate (2 mM). We conclude that the primary action of MDL-310 is to increase glucose utilization and that decreased production due to the inhibition of gluconeogenesis is involved in the hypoglycemic action. A single metabolic action of MDL-310 to increase glycolytic metabolism of glucose is proposed which could explain both the increase in glucose utilization and decrease in glucose production. PMID- 3841155 TI - Regional differences in ethylcholine mustard aziridinium ion (AF64A)-induced deficits in presynaptic cholinergic markers for the rat central nervous system. AB - Several highly selective biochemical markers were used to assess the persistent central cholinergic dysfunction which accompanies administration of the cholinergic neurotoxin ethylcholine mustard aziridinium ion (AF64A). Rats received a single bilateral intracerebroventricular injection of AF64A (3 nmol/3 microliter/side) or vehicle and measurements were carried out in the cerebral cortices, hippocampi and corpora striata at 7 and 21 days postinjection. The drug binding sites of muscarinic cholinergic receptors, as revealed by high-affinity binding of (-)-[3H]quinuclidinyl benzilate (a classical muscarinic antagonist), [3H]pirenzepine (a selective antagonist of the putative M1 muscarinic receptor subclass) and (+)-[3H]cis-methyldioxolane (a potent muscarinic agonist), were not significantly affected by AF64A treatment. As reported previously, activity of the cholinergic synthetic enzyme choline acetyltransferase was reduced markedly (60-65%) in the hippocampi of AF64A-treated rats. A similar reduction was noted in high-affinity binding of [3H]hemicholinium-3 (a putative radioligand for sodium-dependent high-affinity choline uptake sites on cholinergic nerve terminals) in hippocampal membranes (59-65%). However, in the cerebral cortex, these presynaptic cholinergic markers were differentially altered by AF64A pretreatment (choline acetyltransferase, unchanged; [3H]hemicholinium-3 binding, reduced by 59-65%). These results indicate that a single intracerebroventricular injection of AF64A promotes biochemical and possibly functional deficits in presynaptic cholinergic nerve terminals distal from the injection site while having minimal influences upon muscarinic cholinergic receptor populations. PMID- 3841156 TI - Differential ontogeny of putative M1 and M2 muscarinic receptor binding sites in the murine cerebral cortex and heart. AB - Studies with [3H]pirenzepine [( 3H]PZ) suggest that this nonclassical muscarinic antagonist selectively identifies putative M1 muscarinic receptors. We now compare the ontogeny of these putative M1 sites, identified by high-affinity [3H]PZ binding, with sites identified by the classical antagonist (-) [3H]quinuclidinyl benzilate ((-)-[3H]QNB) in murine cerebral cortical and cardiac homogenates. Dissociation constants (Kd) for [3H]PZ (2.1-6 nM in the cortex and 2.0-21 nM in the heart) and for (-)-[3H]QNB (10-28 pM in the cortex and 10-39 pM in the heart) are similar in adult and neonatal tissues, whereas receptor density (maximum binding, femtomoles per milligram of protein) varies significantly. Cerebral cortical [3H]PZ binding rises from 14% at birth, to 88% of adult levels by day 14, peaks at 128% at day 28 and falls to the mean adult level of 606 fmol/mg of protein. Cerebral cortical (-)-[3H]QNB binding parallels [3H]PZ binding. Conversely, parallel studies show cardiac (-)-[3H]QNB density is 3- to 17-fold greater than the comparable density of high-affinity [3H]PZ binding sites throughout ontogeny. We conclude that: 1) the high ratio of [3H]PZ binding to (-) [3H]QNB binding identifies the murine cerebral cortex as a tissue which contains predominantly putative M1 muscarinic binding sites; 2) the relatively low ratio of [3H]PZ binding to (-)-[3H]QNB binding throughout ontogeny identifies the murine heart as a tissue which contains primarily the putative M2 muscarinic binding site; and 3) M1 and M2 receptor binding sites show distinct developmental curves in the cerebral cortex and heart.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841157 TI - Reliability of urinary pregnancy tests in the diagnosis of ectopic pregnancy. AB - Recently a new generation of urinary pregnancy tests with increased sensitivity and specificity for beta-human chorionic gonadotropin (beta-HCG) was introduced. The clinical sensitivity of seven of these tests was evaluated in patients with surgically proven ectopic pregnancy. Two enzyme-linked immunosorbent assays (Tandem Visual, Hybritech; Mod C1, Monoclonal Antibodies), with a sensitivity of 50 mIU of beta-HCG, were positive in 90% of ectopic pregnancies. The three-tube tests (Sensitex, Roche; UCG Beta Stat, Wampole; beta-Neocept, Organon), with a sensitivity of 150-250 mIU of beta-HCG, were positive in 81-85% of ectopic pregnancies. Two slide tests (UCG Beta Slide, Wampole, and Sensislide, Roche), with a sensitivity of 500-800 mIU of beta-HCG, were positive in 51-61% of ectopic pregnancies. Both the immunosorbent assays and the tube tests were statistically more sensitive than the slide tests (P less than .001). There was no statistically significant increase in sensitivity between the tube tests and the immunosorbent assays. The sensitivities of these tube tests in ectopic pregnancy are similar to those of tube tests from other manufacturers previously reported on. PMID- 3841158 TI - Blood feeding and oviposition by tabanids (Diptera) in the laboratory. PMID- 3841159 TI - Lack of adverse effect of transovarially acquired La Crosse virus infection on the reproductive capacity of Aedes triseriatus (Diptera: Culicidae). PMID- 3841160 TI - Immunogenetic studies in families with rheumatoid arthritis and autoimmune thyroid disease. AB - HLA and Gm typing were carried out in 16 families. Seven families included 10 sib pairs with rheumatoid arthritis (RA) and autoimmune thyroid disease (ATD) respectively, and nine families included 16 sib pairs with RA and circulating thyroid autoantibodies respectively. Eight, 11, and seven sib pairs with either RA or clinical or immunological evidence of ATD shared none, one, and two HLA haplotypes respectively, and two, seven, and two informative sib pairs shared none, one, and two Gm haplotypes respectively. This random haplotype sharing of HLA and Gm haplotypes suggests that non-HLA, non-Gm linked genes are likely to be involved in any genetic predisposition common to RA and ATD. PMID- 3841161 TI - Familial complex autosomal translocations involving chromosomes 7, 8, and 9 exhibiting male and female transmission with segregation and recombination. AB - A family showing a complex translocation between chromosomes 7, 8, and 9 with breakpoints at 7q21, 7q33, 8p23, and 9p23 is described. The proband had been referred because of repeated spontaneous abortions. This is only the second family to be ascertained in this way. Twenty-three other cases of complex translocations are briefly reviewed, eight of which were de novo in origin and 15 familial. All but one of the familial cases showed maternal transmission only. The present family shows both maternal and paternal transmission and is thought to be the first exhibiting recombination from a male carrier. The origin and transmission of the complex translocation is followed through three generations. PMID- 3841162 TI - Relapse of Graves' disease 23 years after treatment with radioactive iodine (131I). AB - The use of radioactive iodine (131I) in the treatment of Graves' disease results frequently in hypothyroidism requiring thyroid hormone supplementation. Relapse of Graves' disease months after inadequate treatment with 131I is well recognized. However, late relapse of Graves' disease in a patient rendered hypothyroid by 131I years after therapy has not been reported. The authors discuss a patient who had a relapse of his Graves' disease 23 yr after treatment with 131I. Over the interval the patient had been on 1-thyroxine replacement for hypothyroidism and had persistently high levels of long acting thyroid stimulator or thyroid stimulating antibody. The authors speculate that the immune nature of Graves' disease may play a role in the observed clinical response to 131I. PMID- 3841163 TI - The use of ivermectin in the treatment and prevention of infection with Parelaphostrongylus tenuis (Dougherty) (Nematoda: Metastrongyloidea) in white tailed deer (Odocoileus virginianus Zimmermann). PMID- 3841164 TI - Psoroptes ovis (Acarina: Psoroptidae) in a Rocky mountain bighorn sheep (Ovis canadensis canadensis) in Idaho. PMID- 3841165 TI - [Tumor markers in testicular tumors]. AB - Serum levels of hCG, AFP, CEA and testosterone were measured in 20 patients with testicular tumors for an evaluation of their clinical significance as tumor markers. HCG was elevated in those with chorional and syncytiotrophoblastic cell tumors, but it was also detected in some cases of embryonal carcinoma and seminoma, suggesting the presence of hCG-producing elements. AFP was exclusively elevated in embryonal and yolk sac tumors. CEA and testosterone were mostly normal in all patients. HCG and AFP fluctuated in good correlation with the clinical course. Thus, hCG and AFP were valuable tumor markers for testicular tumors for the diagnosis of histological type and stage and monitoring the therapeutic effect and prognosis. PMID- 3841166 TI - [Enzyme linked immunosorbent assay for the determination of protein C and its clinical application]. PMID- 3841167 TI - [Blood coagulation mechanism from the viewpoint of molecular biochemistry: Inhibition mechanism of blood coagulation--especially on the function of antithrombin III]. PMID- 3841168 TI - Enzymes in ornithine-proline metabolic pathway in bovine lens. AB - Various enzyme activities related to ornithine metabolism were studied using bovine lenses, ie, ornithine ketoacid transaminase, delta-1-pyrroline-5 carboxylate reductase, and delta-1-pyrroline-5-carboxylate dehydrogenase. Ornithine ketoacid transaminase activity was found in the lens epithelium; delta 1-pyrroline-5-carboxylate reductase activity was high in both lens epithelium and cortex plus nucleus; delta-1-pyrroline-5-carboxylate dehydrogenase activity was negligible in either lens epithelium or cortex plus nucleus. These results suggest that in the bovine lens ornithine is converted to proline by the cooperative action of ornithine ketoacid transaminase and delta-1-pyrroline-5 carboxylate reductase. PMID- 3841169 TI - [Surgical treatment of aortic regurgitation associated with annular abscess or aneurysm due to bacterial endocarditis]. PMID- 3841170 TI - Alternatives to CYVADIC-combination therapy of soft tissue sarcomas. AB - The CYVADIC combination has been the preferred treatment for soft tissue sarcomas for the last 10 years. Other combinations of therapy are necessary because the remission rate achieved with CYVADIC is only thirty per cent. Alternative therapies for these tumours are combinations including cis-platinum, ifosfamide, epipodophyllin and high-dose methotrexate. Our therapeutic results with combinations of cis-platinum and ifosfamide are comparable to CYVADIC. However, side-effects such as nausea, vomiting and fatigue due to cis-platinum in the palliative treatment of these tumours are intolerable for many patients. A combination of adriamycin and ifosfamide, which exhibits a higher remission rate of 44% and lower toxicity than CYVADIC, is giving encouraging results. PMID- 3841171 TI - Tennessee's statewide prenatal program serving low-income pregnant women. PMID- 3841172 TI - Surgical treatment of carcinoma of the breast. V. Changes in patient population and therapeutic modalities at a metropolitan hospital (1971-1980). AB - This is a retrospective study of 408 patients who had mastectomy for carcinoma of the breast during 1971-1980. Over these 10 years, we have had a significant increase in Hispanic patients. Although the mean size of breast tumors among the Hispanic patients was smaller than that of our black patients, Hispanic patients are more likely to have higher numbers of positive axillary lymph nodes. Similar to the nationwide trend, over 90% of the patients had modified radical mastectomy in recent years, and adjuvant systemic chemotherapy has replaced postoperative radiotherapy for patients with axillary metastasis. Postmastectomy actuarial 5 year relapse rates of our patients with none or 1-3 positive axillary nodes were quite similar. Among patients with 1-3 positive axillary nodes, year of diagnosis and whether postoperative radiotherapy or chemotherapy was added or not did not affect disease-free probability. However, among patients who had four or more positive axillary nodes, those who were admitted after 1976 and who received systemic chemotherapy (90% had CMF) had a much lower probability of developing recurrence. PMID- 3841173 TI - Isolation of tumoricidal human factors from lymphoid cells and enzymatic digestion of these factors into small fragments retaining tumoricidal effects. AB - Gel filtration and immunoadsorption techniques have been utilized to purify tumoricidal factors from sturgeon sera as well as human plasma. Two pure proteins with cytotoxic activity were isolated from the sturgeon serum (factors A2 and B2) and two additional cytotoxic factors were isolated from human plasma (Factors A and B). In another study, human factors A and B were quantitated in both normal donor and cancer patients' plasma. It was found that the cancer patients produced at least 50% less tumoricidal factors than did the normal donors. Furthermore, when the secretions from various lymphoid cell populations were purified utilizing immunoadsorbent techniques, it was found that the macrophages generally were producing the human tumoricidal factors. Both the sturgeon and the human factors were enzymatically cleaved into several small molecular weight fragments. Sephadex G-75 column chromatography was then utilized to isolate the enzymatic cleavage fragments. Three fragments with cytotoxic activity were isolated from both sturgeon factor A2 and B2. Similarly, human factor A was digested into two fragments with cytotoxic activity and factor B was digested into three fragments with cytotoxic activity. The molecular weights of the cytotoxic sturgeon and human fragments ranged from 14,000 to 23,000 whereas the intact sturgeon and human factors had a molecular weight slightly greater than 67,000. Ultimately, if these small molecular weight fragments can be sequenced, then it would be possible to prepare a synthetic analog which might have future potential as a mode of treatment for cancer patients. PMID- 3841174 TI - SIMP: a computer program in BASIC for nonlinear curve fitting. AB - A computer program for nonlinear regression analysis is described. The program, SIMP, is written in BASIC for use with a wide range of microcomputers. The simplex algorithm is used to minimize the sum of the squared residuals around the fitted line, and the data can be weighted if required. The program is applicable to a wide range of pharmacological procedures requiring curve fitting, and the analysis of protein-binding data is given as an example. PMID- 3841175 TI - Age-related changes in lymphocyte subset proportions, surface differentiation antigen density and plasma membrane fluidity: application of the eurage senieur protocol admission criteria. AB - Peripheral blood lymphocytes from 260 "apparently healthy" males and females, aged 20-97, have been investigated for age-related changes in a number of immunological parameters (percent and number of lymphocytes, OKT 4+ and OKT 8+ cells; OKT 4/8 ratio; intensity of fluorescence of OKT 4 and OKT 8 stained cells; membrane fluidity). Data were then reassessed after exclusion of people who did not conform to the SENIEUR PROTOCOL admission criteria of EURAGE (European Economic Community's Concerted Action Program on Aging) in order to investigate whether the differences observed were attributable to underlying disease. A slight decrease in the number and percentage of lymphocytes, OKT 4+ and especially OKT 8+ cells was found. Intensity of fluorescence of OKT 4 and OKT 8 stained cells from the elderly was reduced and may explain the lower percentages. Membrane fluidity was decreased in old persons (over the age of 75); the free cholesterol/phospholipid molar ratio in the serum increased up to the age of 75 and then declined, and it did not correlate with decreased membrane fluidity. Exclusion of the 20-60% of the study groups who were not eligible for admission according to the SENIEUR PROTOCOL criteria did not affect these results. The feasability and applicability of the PROTOCOL is discussed. PMID- 3841176 TI - Microcomputer-based muscle relaxation monitor and controller for clinical use. PMID- 3841177 TI - Microprocessor system for control and analysis of thermographic images. PMID- 3841178 TI - A systematic design procedure for selective pulses in NMR imaging. AB - Spectral tailoring of an amplitude-modulated radio-frequency (RF) pulse may be used to modify the slice-profile produced by a selective excitation sequence. Optimisation of the profile by intuitive means is difficult, however, due to the non-linearity of the magnetisation's response. A design procedure is presented which uses computer-simulation to calculate the response to an arbitrary RF envelope, and alters systematically the shape of the envelope in order to optimise the slice-profile. Two forms of modulation function are suggested, both based on a truncated-sinc, and the simulated response to optimised 90 degrees and 180 degrees pulses is shown. The effect on the slice-profile of RF magnetic field inhomogeneity is discussed. PMID- 3841179 TI - Diffraction methods for biological macromolecules. Interactive computer graphics: FRODO. PMID- 3841180 TI - Interpretation of electron density maps. PMID- 3841181 TI - Computer skeletonization and automatic electron density map analysis. PMID- 3841182 TI - Stereochemically restrained refinement of macromolecular structures. PMID- 3841183 TI - Fast Fourier transform calculation of electron density maps. AB - This chapter has described the mathematical basis of the fast Fourier transform as applied to the calculation of crystallographic Fourier syntheses. The relationship between real space and reciprocal space symmetry operators has been described. Finally, program organizations have been presented for performing general crystallographic Fourier transforms on computer systems ranging from the very largest systems down to minicomputers. Programs are available from the author, written in FORTRAN IV and in Ratfor, which are suitable for building blocks in these program designs. PMID- 3841184 TI - Automatic recognition of domains in globular proteins. PMID- 3841185 TI - Computer-controlled scanning gel chromatography. PMID- 3841186 TI - Ultrafiltration in ligand-binding studies. PMID- 3841187 TI - [Hb Manitoba and Hb Contaldo in Northern Italy]. PMID- 3841188 TI - [Subcutaneous adiponecrosis of the newborn infant]. PMID- 3841189 TI - Domain structure of human glucocorticoid receptor and its relationship to the v erb-A oncogene product. AB - The interaction of steroids with their nuclear receptors induces a cascade of regulatory events that results from the activation of specific sets of genes by the hormone/receptor complex. Steroids, either acting alone or possibly synergistically with other growth factors, can influence the DNA synthesis and proliferation of specific target cells, initiate developmental pathways and activate expression of the differentiated phenotype. Moreover, steroid hormones have been implicated in abnormal growth regulation both in tumours and tumour derived cell lines. The identification of complementary DNAs encoding the human glucocorticoid receptor (hGR) predicts two protein forms (alpha and beta; 777 and 742 amino acids long, respectively) which differ at their carboxy termini. We report here that both forms of the receptor are related, with respect to their domain structure, to the v-erb-A oncogene product of avian erythroblastosis virus (AEV), which suggests that steroid receptor genes and the c-erb-A proto-oncogene are derived from a common primordial regulatory gene. Therefore, oncogenicity by AEV may result, in part, from the inappropriate activity of a truncated steroid receptor or a related regulatory molecule encoded by v-erb-A. This suggests a mechanism by which transacting factors may facilitate transformation. We also identify a short region of hGR that is homologous with the Drosophila homoeotic proteins encoded by Antennapedia and fushi tarazu. PMID- 3841190 TI - A microcomputer generated individualized pediatric emergency drug list. PMID- 3841191 TI - Short-term single daily dose treatment of hyperthyroid Graves' disease. PMID- 3841192 TI - Comparative evaluation of the behavioural consequences of prenatal and early postnatal exposure to haloperidol in rats. AB - The intensity of apomorphine (1-2 mg/kg)-induced stereotyped behaviour was significantly lower in 60 day old offspring of rats treated with haloperidol during pregnancy (0.5 mg/kg SC for 15 days, beginning on day 4 after conception) than in vehicle-exposed animals. Moreover, at 60 days of age, apomorphine (1-2 mg/kg)-induced inhibition of locomotor activity was much less marked in haloperidol-pretreated than in vehicle-pretreated rats. Conversely, our previous data showed that behavioural supersensitivity to apomorphine (1-2 mg/kg) was still present 40 days after the last administration of haloperidol, if the animals received the drug (0.5 mg/kg SC) from birth to 20 days of age. Finally, at 80 days of age, animals prenatally exposed to haloperidol were subjected to a differential reinforcement of low rates schedule (DRL-15 sec). The results indicate that the acquisition of the DRL task performance criterion (Rs/Rf less than or equal to 2.5) was significantly more rapid in control animals than in haloperidol-pretreated rats. In this regard, we previously showed that early postnatal exposure to the neuroleptic also impairs the acquisition of the DRL schedule in adult rats. These data confirm and extend the differences in behavioural consequences of prenatal and early postnatal exposure to haloperidol, and further point to the usefulness of DRL task in the evaluation of subtle behavioural changes induced by psychotropic drugs in the absence of overt signs of neurotoxicity. PMID- 3841193 TI - [A case of septic aneurysm complicated with simultaneous subdural and intracerebral hematoma]. AB - A case of septic aneurysms complicated with simultaneous subdural and intracerebral hematoma is presented. A 13-year-old girl had been operated on for endocardial cushion defect when she was 5 years old, and residual mitral regurgitation was followed up. She suddenly complained of headache, vomited and lost consciousness. She was brought to the Tokyo Women's Medical College Hospital by an ambulance. On arrival, she was semicomatose. Her left pupil was mydriatic and did not react to light. Right hemiparesis was noted. Systolic murmur was audible in the apical region of the heart. Laboratory data showed a mild anemia and a white cell count of 23,000. CT scan showed a subdural hematoma in the left frontotemporoparietal region and a small subcortical hematoma in the left occipital lobe. An emergency operation was carried out for the subdural hematoma. When the dura was opened, about 10 ml bloody CSF flowed out. A hematoma weighing about 50 g was removed. A bleeding point or an aneurysm could not be discovered on the dura, arachnoid membrane or surface of the brain at the operation. On the 15th day after the operation, when the fever was decreased, cerebral angiography was done. The left vertebral angiogram showed an aneurysm on a peripheral branch of the calcarine artery, which was considered the origin of the subcortical hematoma in the left occipital lobe. The left carotid angiogram showed no aneurysm. On the seventh day after that study, the aneurysm did not appear by left vertebral angiography. She was discharged with no neurological deficit. One month later, she was admitted again with a high fever.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841194 TI - Administration of antisera to vasoactive intestinal polypeptide and peptide histidine isoleucine attenuates ether-induced prolactin secretion in rats. AB - The effect of immunoneutralization of endogenous vasoactive intestinal polypeptide (VIP) and peptide histidine isoleucine (PHI)-like peptides by administration of specific and potent antisera to the respective peptides on ether stress-induced prolactin (PRL) release was examined in male rats bearing an indwelling atrial catheter. Forty-five minutes after an injection of 1 ml of either normal rabbit serum (NRS), anti-VIP serum (AVS), anti-PHI serum (APS) or AVS plus APS, the rat was placed for 1 min in a beaker containing an ether impregnated cotton ball. Ether exposure caused a prompt and significant increase in plasma PRL in all of the animal groups tested. Pretreatment with either antisera did not affect basal plasma PRL levels, whereas plasma PRL rises after ether exposure were significantly lower in rats pretreated with AVS, APS or AVS plus APS than those with NRS. These results suggest that hypothalamic VIP and PHI like peptides may be involved, at least in part, in the mechanism by which ether stress stimulates PRL secretion in rats. PMID- 3841195 TI - Detection of preprocholecystokinin and preproenkephalin A mRNAs in rat brain by hybridization histochemistry using complementary RNA probes. AB - The distributions of mRNAs encoding preprocholecystokinin and preproenkephalin A in the rat brain were examined by in situ hybridization histochemistry. Complementary RNA probes 0.5-1.0 kilobase in length were synthesized in vitro with 35S-ribonucleotides using SP6 polymerase and a transcription vector containing the SP6 promotor. Following hybridization to fixed tissue sections, signals were detected by autoradiography after relatively short exposure times. These studies demonstrate that neuropeptide mRNAs can be detected within specific cells in the brain and that the patterns of hybridization match the localization of the peptides visualized by immunohistochemistry. Minimum numbers of mRNA copies encoding the peptides were determined by quantitative autoradiography. PMID- 3841196 TI - Threshold for lens damage during Q-switched Nd:YAG laser iridectomy. A study of rhesus monkey eyes. AB - Clinical and pathologic examinations were performed after 18 iridectomies had been created in six eyes of three rhesus monkeys using increasing Q-switched neodymium (Nd):YAG laser energy, pulses per burst, and number of bursts. Treatment parameters bracketed the threshold for lens damage during iridectomy. Iridectomy with one or two bursts of one or two Q-switched pulses at 5 to 6.2 mJ per pulse was achieved without lens damage. Slight increase of pulse energy or an increase to three pulses per burst (without pulse energy increase) caused local damage to the underlying lens. Marked increase of any of the treatment parameters caused slightly larger iridectomies and slightly larger, localized damage of the underlying lens. Synechiae developed between the monkey posterior iris surface at the iridectomy and the damaged area in 80% of the lens lesions. In monkeys, the small pulsed laser iridectomies created with pulses of energies up to 6.5 mJ became occluded during the healing process. PMID- 3841197 TI - [Sex distribution in perinatal deaths]. PMID- 3841198 TI - The inheritance of enzyme variants of glutamic-oxaloacetic transaminase in Paragonimus ohirai. AB - Lung flukes, Paragonimus ohirai, from Kinosaki, Japan, characterized by 3 electrophoretic variants, FF, FS and SS, of glutamic-oxaloacetic transaminase (GOT: EC 2.6.1.1) were crossed in the laboratory. In the case of a cross between FS and SS, a parent, FS, produced 9 SS and 16 FS clones in the offspring, numbers not significantly different from that expected (1:1) from Mendelian inheritance. From the other cross FS X FF, 20 clones originating from the respective 20 miracidia were obtained from a parent FS. The phenotype segregation ratio was 6 FF and 14 FS, which is not significantly different from Mendelian inheritance expectation. Only 3 clones were obtained from the other parent FF, but these segregated in a ratio of 2 FS: 1 FF. These breeding data indicate that the GOT isozymes of P. ohirai are controlled by 2 codominant alleles, GotF and GotS at a single locus whose products aggregate randomly, forming a dimer. PMID- 3841199 TI - A comparative study of the succinate dehydrogenase-fumarate reductase complex in the genus Trichinella. AB - Succinate dehydrogenase and fumarate reductase activities from a particulate fraction of 4 isolates of the supposed 'species' of Trichinella, T. spiralis, T. pseudospiralis, T. nativa and T. nelsoni have been determined using spectrophotometric methods. The 'in vitro' effect of the anthelmintics thiabendazole, mebendazole and ivermectin on succinate dehydrogenase and fumarate reductase activities from the above isolates is also described. The significance of the results is discussed in the context of the controversy that surrounds speciation of the genus Trichinella. PMID- 3841200 TI - [Analytical morphometry in the study of biological forms: description of the procedure and oriented software]. PMID- 3841201 TI - [Causes and mechanisms of subdural hemorrhages and ruptures of the tentorium cerebelli in fetuses and newborn infants]. PMID- 3841202 TI - Comparison of pausing during transcription and replication. AB - Pausing during the transcription of MDV-1 cDNA by Escherichia coli RNA polymerase was compared with pausing during the replication of MDV-1 RNA by Q beta replicase. MDV-1 RNA is able to form many strong hairpin structures, and Q beta replicase pauses after the synthesis of each [Mills et al. (1978) Cell 15, 541 550]. Although the transcripts were virtually identical to MDV-1 RNA, the locations at which RNA polymerase paused were different and apparently were not related to sequences that can form hairpins. These results indicate that hairpin stability, per se, cannot be used to predict the occurrence of pausing during transcription. Four pauses that occur within a 5-nucleotide region were studied in detail. Insertions and deletions were made in the template DNA to determine the contribution made by the surrounding sequences to these pauses. The results indicate that some of the pauses require the presence of particular upstream sequences, while others are unaffected by the template modifications. Thus, there are at least two different transcriptional pausing mechanisms: one depends on the nature of upstream sequences, while the other is independent of upstream sequences. PMID- 3841203 TI - The nucleotide sequence of tobacco rattle virus RNA-2 (CAM strain). AB - The nucleotide sequence of the smaller genomic strand (RNA-2) of the bipartite tobacco rattle virus (CAM strain) has been determined. RNA-2 is capped at the 5' terminus and contains 1799 nucleotide residues. There is a single 223 codon long open reading frame extending from nucleotide 574 to 1242 which designates a protein of Mr 23,654. The derived amino acid composition, in percent, matches that previously determined for the virus capsid protein. The long open reading frame is flanked by 5' and 3' untranslated regions of 573 and 554 nucleotides, respectively. The 5' leader sequence contains two different sets of direct repeats, one of 119 nucleotides and the other of 76. It also contains 13 apparently unused AUG codons, four of which lie in the same frame as the capsid protein cistron. The 3' terminal sequence of RNA-2 is identical to that of the larger genomic strand (RNA-1) for 459 nucleotides. PMID- 3841204 TI - Molecular cloning of human apolipoprotein B cDNA. AB - In this paper we describe the isolation of cDNA clones which code for parts of apolipoprotein B (apoB). The clones were obtained by immunoscreening of an expression library (lambda gt 11) derived from a human hepatoma cell line (Hep G2). The relationship between positive clones and apoB was established with immunochemical techniques using polyclonal as well as monoclonal antibodies. Recombinants, expressing nonoverlapping regions of apoB are described, all hybridizing with a very large mRNA (approximately 20,000 bases long). The nucleotide sequence obtained predicts a primary protein structure with a composition suitable for the formation of stretches of an amphipatic alpha-helix. PMID- 3841205 TI - Putative amino acid sequence of chick calcium-binding protein deduced from a complementary DNA sequence. AB - Two DNA fragments coding for chick CaBP have been isolated and sequenced. cDNA was prepared from enriched intestinal mRNA and cloned in pUC12. The recombinant clones were screened by differential hybridisation with 32P-cDNA probes synthesized from vitamin D replete and deficient chick intestinal mRNA. Two clones had outstanding affinity with the +D probe. Hybrid-arrested and hybrid selected translation systems showed that both clones hybridised to mRNA coding for immunoprecipitable CaBP. The mRNA for CaBP has a 100 bp G,C rich sequence before a 786 bp coding region followed by 1250 nucleotides 3' untranslated region. Nucleotides coding for the Ca-binding sites show a high degree of homology for Ca-binding sites in chick calmodulin and rat intestinal CaBP. The amino acid sequence specified by the longest open reading frame contains five Ca binding sites but is too large for the native CaBP; post-translational modification must therefore occur. PMID- 3841206 TI - Steady-state disposition of diflunisal: once- versus twice-daily administration. AB - To evaluate the steady-state bioequivalence of the nonsteroidal antiinflammatory analgesic agent, diflunisal, administered once versus twice daily, 13 healthy volunteers received diflunisal as follows: 1000 mg at 8:00 AM and 500 mg at 8:00 AM and 8:00 PM, each for 14 days in a randomized crossover study. The mean (+/- SD) steady-state peak plasma concentrations were significantly greater after once daily dosing (186 +/- 25 micrograms/ml vs 150 +/- 37 micrograms/ml; p less than 0.01). The time to peak concentration was also longer after the single-dose regimen (2.5 +/- 0.8 vs 1.9 +/- 0.9 hr; p less than 0.05). The regimens were similar with respect to the mean 24-hour area under the plasma concentration-time curve at steady state (2839 +/- 612 vs 2782 +/- 778 micrograms.hr.ml-1), steady state plasma concentrations (118 +/- 25 vs 116 +/- 32 micrograms/ml), trough plasma concentration (85 +/- 27 vs 92 +/- 28 micrograms/ml) as well as 24-hour urinary excretion (776 +/- 79 vs 771 +/- 89 mg) of diflunisal. Based on urinary recoveries, the bioequivalence ratio (once vs twice daily) was 1.01 +/- 0.08. These results indicate that diflunisal administered once daily might offer comparable therapeutic effects but be more convenient than a twice-daily regimen. PMID- 3841207 TI - Fetal echocardiography: confidence limits and accuracy. PMID- 3841208 TI - Surgical anatomy of the atrioventricular conduction bundle in anomalous muscle bundle of the right ventricle with subarterial ventricular septal defect. AB - A stillborn baby girl was found to have an anomalous muscle bundle of the right ventricle, associated with a doubly committed subarterial ventricular septal defect. The latter was separated from the area of the atrioventricular conduction bundle by muscle. Serial histologic sectioning of the specialized atrioventricular junctional area revealed that the final bifurcation of the branching bundle came astride the septum in the inferior angle of the defect. The right bundle branch bifurcated and one of its branches continued along the anomalous muscle bundle in subendocardial position. This anatomy supports the concept that the bundle, in this heart, represented an early takeoff of the moderator band. The surgical anatomy suggests that resection of the anomalous muscle bundle and closure of the ventricular septal defect might well have produced heart block. The generally accepted rule that resection of anomalous muscle bundles in the right ventricle is surgically safe should be reconsidered. PMID- 3841209 TI - [Efficacy of immunotropic drugs in experimental tuberculosis]. PMID- 3841210 TI - Differential salicylate-aspirin interaction on vascular prostacyclin and platelet thromboxane synthesis in patients undergoing saphenectomy. AB - We studied the ability of salicylate to counteract the effect of aspirin on platelet thromboxane synthesis and prostacyclin formation in venous tissue in patients undergoing saphenectomy. A single intravenous dose of 40 mg aspirin completely blocked thromboxane formation and reduced prostacyclin to about 43% of the control values. When salicylate (1000 mg po) corresponding in anesthetized subjects to blood levels of 25.9 +/- 5 micrograms/ml was administered before aspirin, vascular prostacyclin was no longer inhibited, whereas platelet thromboxane was still significantly blocked. These results suggest that the combination of salicylate with aspirin at an appropriate dose ratio may result in almost complete dissociation of the drug's effect on platelets and vessels in man. PMID- 3841211 TI - Involvement of peptide histidine isoleucine (PHI) in prolactin secretion induced by serotonin in rats. AB - The possible role of hypothalamic peptide histidine isoleucine (PHI) in prolactin (PRL) secretion induced by serotoninergic mechanisms was investigated in male rats using a passive immunization technique. Intracerebroventricular injection of serotonin (5HT, 10 micrograms/rat) raised plasma PRL levels both in urethane anesthetized rats and in conscious rats pretreated with normal rabbit serum (0.5 ml/rat, iv, 30 min before). Plasma PRL responses to 5HT were blunted in these animals when they were pretreated with rabbit antiserum specific for PHI (0.5 ml/rat, iv, 30 min before) (mean +/- SE peak plasma PRL: anesthetized rats 271.3 +/- 38.3 ng/ml vs 150.0 +/- 12.6 ng/ml, p less than 0.01, conscious rats 54.3 +/- 6.8 ng/ml vs 30.7 +/- 4.1 ng/ml, p less than 0.025). These results suggest that hypothalamic PHI is involved, at least in part, in PRL secretion induced by central serotoninergic stimulation in the rat. PMID- 3841212 TI - Turner's syndrome: updating on diagnosis and therapy. PMID- 3841213 TI - Effects of inhibitors of carbohydrate absorption or lipid metabolism on meal patterns of Zucker rats. AB - Peripherally active anorectic agents represent a new approach to the pharmacological management of obesity. Two inhibitors of carbohydrate absorption: an alpha-glucosidase inhibitor, acarbose (Bay g 5421) and a alpha-amylase inhibitor, Ro 12-2272, were compared with two novel inhibitors of lipid metabolism: an inhibitor of human pancreatic lipase (Ro 20-0083) and of hepatic fatty acid synthesis (Ro 22-0654). All drugs were presented as diet admixtures over 3 or 4 consecutive days. Total food and water intakes, the temporal pattern of feeding, and the average meal frequency and meal size were measured using computerized data collection procedures. Inhibitors of carbohydrate absorption failed to suppress food intake in either obese or lean Zucker rats and had no effect on the parameters of feeding. In contrast, inhibitors of lipid metabolism reduced food intake by 56-77% by reducing both meal frequency and meal size. Direct inhibition of lipid metabolism may be a viable mechanism for anti-obesity agents. PMID- 3841214 TI - Effects of intracerebroventricular injection of delta sleep-inducing peptide (DSIP) and an analogue on sleep and brain temperature in rats at night. AB - The effects of ICV injections of DSIP and omega-amino-caprilyl-DSIP (C-DSIP) on the sleep-wake activity and brain temperature (Tbr were studied in rats. The substances (7 nmol/kg) were injected at dark onset, and the sleep-wake activity and Tbr were recorded for 24 hr (dark and light periods, 12 hr each). Relative to the control recordings obtained after artificial CSF injection, the duration of sleep did not increase after either DSIP or C-DSIP. The only significant reaction was an increase of W 6 to 9 hr after the injection of either peptide. The course of Tbr after DSIP and C-DSIP was also identical to that recorded after the injection of artificial CSF. It seems that DSIP administered in a single ICV injection at dark onset does not promote sleep. The increase in W might be attributed to an indirect effect of DSIP or to a degradation product of the peptide. PMID- 3841215 TI - Inhibitory effects of pyruvic acid semi- and thiosemicarbazones on the growth of bacteria, yeasts, experimental tumours and plant cells. AB - Pyruvic acid semi- and thiosemicarbazones (1 and 2, respectively) were tested as inhibitors of bacterial, fungal, experimental tumour and plant cell growth. 1 and 2 displayed a growth-inhibitory effect in vitro against different bacterial strains, and especially against St. aureus mutant UV-2 and S. lutea. The compounds proved to have low activity in vivo against L 1210 and P 388 leukemia, adenocarcinoma 755 and melanoma B 16. 2 inhibited strongly the growth of cultured cells of Lycopersicon esculentum (100% inhibition at a concentration of 1,5 mumol/ml) while 1 was not active. PMID- 3841216 TI - Identification of a mitochondrial p-dinitrobenzene reductase activity in rat liver. AB - Nitroreductase activity has been known to occur under nitrogen atmosphere in the cytosolic and microsomal fractions of liver homogenate. The present study describes a new localisation for a subcellular nitro reduction activity which occurs in liver mitochondria under aerobic conditions. Mitochondria were isolated from rat liver and assayed for their capacity to reduce certain nitro compounds by measuring spectrophotometrically both the appearance of amino compounds and the consumption of NADH. Intact mitochondria were found to possess a p dinitrobenzene (p-DNB) reductase activity which was reduced by over 50% upon addition of detergent. The activity was destroyed by heat, and was present at only 20% in the microsomal fraction. It was strictly NADH-dependent, while only little or no activity occurred with NADPH or other oxidative substrates. Moreover, this nitro reduction was protein concentration- and time-dependent reaching a plateau after 20 min, and was also inhibited by thiol reagents. Assayed under the same conditions, rat liver mitochondria showed about 15% activity with o-DNB and m-DNB, while there was less than 5% activity with a series of p-nitro compounds including chloramphenicol. The presence of a nitroreductase activity in liver mitochondria, although shown here to be restricted to p-DNB, may have important implications regarding cytotoxicity from nitro compounds. PMID- 3841217 TI - A software package for the microcomputer control and analysis of research on schedule-induced polydipsia. AB - This manuscript describes a software package called POLY which offers a range of routines designed to allow the user to set up, run and analyze data for research on schedule-induced polydipsia. The three major routines described are SETUP, RUN and ANALYSIS. The routines are flexible and give the user efficient control over the parameters of the research and the collection and analysis of the data. Although designed for research on schedule-induced polydipsia, the software can be used for other research purposes, requiring only changes in the support hardware. PMID- 3841218 TI - Behavioral scoring using programmable calculators: a technique usable in the field. AB - A simple method of recording the time spent in various behavioral categories during behavioral scoring is described. Use is made of a programmable calculator which is made to function as a multiple timer, keeping track of each of the categories. Any number of mutually exclusive categories can be scored using a single key press, by assigning a pre-set code to each. A print-out of the analysed frequency or duration data can be obtained either concurrently or at any time after the experiment, as required. The least count of the technique is about 1-2 seconds and this precludes its use for extremely rapidly changing behaviors. Apart from this, it is convenient, time-saving and especially suitable for field use. PMID- 3841219 TI - [Effect of phase transition on the slow motion of lipid molecules]. PMID- 3841220 TI - Effects of intrathecal methotrexate and cytosine arabinoside on the radiation tolerance of the rat spinal cord. AB - The effect of intrathecally or intravenously administered methotrexate (MTX) or cytosine arabinoside (ara-C) on the early and late delayed radiation response of the rat cervical spinal cord has been studied. A technique has been developed for intrathecal administration of drugs into the rat lumbar spinal canal. When given shortly before irradiation, intrathecal ara-C significantly reduces the isoeffect doses for the early delayed white matter necrosis syndrome by a factor of 1.2 1.3, while no effect is observed for the late delayed vascular syndrome. The effect disappears when ara-C is given intravenously or 24 h after irradiation. In addition, intrathecal ara-C seems to impair the capacity of long-term regeneration. Intrathecal administration of MTX is limited by severe acute neurotoxicity. At a maximally tolerated intrathecal MTX dose, no modification of the early or late radiation response of the spinal cord was observed. In contrast to ara-C, intravenous MTX seems to interact with the induction of the late delayed vascular damage in the rat cervical spinal cord, with a dose-modifying factor of 1.1-1.2. PMID- 3841221 TI - The guide gutter or loop techniques of interstitial implantation and the Paris system of dosimetry. AB - The predictive dosimetry system for implants known as the Paris system can be used with either loops or hairpins. When using the guide gutter technique, implant geometry is predetermined by the inherent spacing and parallelism of the branches of the hairpins. When using loops, their branches should not be spaced too widely apart and should be parallel over an adequate distance to obtain a fairly regular dose distribution between them. The basic principles of implantation are the same as for rectilinear sources. Branches must be rectilinear, parallel, arranged so that their centers are located in the same plane (central plane). Adjacent branches must be equidistant from each other and the reference linear kerma rate (or the linear activity) must be uniform and identical for all sources. When these conditions are met, the dimensions of the treated volume (volume encompassed by the reference isodose surface with a value equal to 85% of the basal dose rate) can be estimated at the time of the implantation procedure. In practice, only a few relationships presented in this paper, with examples of application, must be known. Although, the Paris system permits forecasting the final dosimetry, the geometry of the implant must be verified and the dose calculated according to the implantation as actually achieved. The best method of checking the exact position of radioactive sources in an implant and determining the dose rate at any desired point is a reconstruction by computer program although alternative methods are occasionally appropriate.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841222 TI - Carbon tetrachloride-induced pharmacokinetic changes of diazepam in rats are reduced by a stable analogue of prostaglandin E2 : FCE 20700. AB - Rats, given CC14 (6670 mg/Kg, sc), exhibited a significant increase in SGPT (425.7 +/- 51.3 mU/ml), together with impaired pharmacokinetics of intravenous diazepam (t beta 1/2: 53.87 h; AUC: 101.05 micrograms/ml/h) when compared with saline treated animal (SGPT: 33.6 +/- 3.8 mU/ml; t beta 1/2: 2.087 h; AUC: 1.37 micrograms/ml/h). FCE 20700 (5 micrograms/ml, sc) did not change, by itself, either SGPT or diazepam pharmacokinetic parameters, but significantly antagonized the changes induced by CC14 (SGPT: 45.3 +/- 5.3 mU/ml; t beta 1/2: 0.167 h; AUC: 2.426 micrograms/ml/h). Further support to this cytoprotective effects was given by histological examination of the livers. Data indicate that this new prostaglandin E2 derivative might be useful in patients with liver failure. PMID- 3841223 TI - Benznidazole and nifurtimox nitroreductase activity in liver microsomes from male rats preinduced with phenobarbital or 3-methylcholanthrene. AB - Liver microsomes from Sprague-Dawley male rats are able to biotransform Benznidazole (Bz) or Nifurtimox (NFX) by nitroreduction. Pretreatment of the rats during three days with phenobarbital (80 mg/kg/day, ip) but not with 3 methylcholanthrene (35 mg/kg/day ip) increased both Bz and NFX nitroreductase activity. Results suggest that cytochrome P-450 but not cytochrome P-448 is involved in the nitroreduction of these two chemotherapeutic agents against Chagas' disease. Possible pharmacological and toxicological implications of these observations are discussed. PMID- 3841224 TI - [The body's own sleep substance DSIP]. PMID- 3841225 TI - [Sterility in North African immigrant women]. AB - Sterility in North African immigrants does not differ greatly from the sterility observed in French women. The authors emphasise one particular difference: the frequency of genital tuberculosis present in 1/3 of cases compared with 6 per cent of the general population. PMID- 3841226 TI - [The surfactant system, its function and composition in relation to healthy and diseased lung tissue]. PMID- 3841227 TI - Discrepancy between serum 1,25-dihydroxycholecalciferol measured by radioimmunoassay and cytosol radioreceptor assay. AB - A radioimmunoassay for determination of 1,25-dihydroxycholecalciferol (1,25(OH)2D3) in serum, was compared with the radioreceptor assay using cytosol receptor from rachitic chick intestine in order to clarify whether differences in specificity can explain discrepancies in the clinical application of the two techniques. In the literature, seasonal fluctuations in serum 1,25(OH)2D3 are only observed when using radioimmunoassay. Treatment of anticonvulsant osteomalacia with vitamin D3 results in a marked increase in radioimmunologically measured 1,25(OH)2D3, but no effect on the serum 1,25(OH)2D level, measured by the radioreceptor assay, could be observed. The present study demonstrates that another unknown compound is coeluted on high pressure liquid chromatography with 1,25(OH)2D3, and recognised only by the antiserum. It can be concluded that the present radioimmunoassay cannot replace the cytosol receptor assay or either supplement by measuring the 1,25(OH)2D3 metabolite only. PMID- 3841228 TI - Action of pirenzepine, a new muscarinic antagonist drug, on human pancreatic secretion. AB - The action of a new muscarinic antagonist drug on the pancreatic secretion has been studied in 12 healthy subjects. A stable pancreatic secretory plateau was obtained with submaximal hormonal stimulation (0.125 CU/kg/h secretin: 30 ng/kg/h caerulein). The highest dose of pirenzepine (40 mg) inhibited both volume and enzymatic concentration and output (-72.2% and -77.9% of plateau value for chymotrypsin and lipase output, respectively, 30 min after pirenzepine injection). The inhibition appeared immediately, lasted for more than 60 min, and was dose-related. The calcium dose-response curve paralleled those of lipase and chymotrypsin outputs. These results were comparable to those obtained with other anti-acetylcholine drugs and may be associated with the action of certain doses of ethanol on pancreatic secretion. In contrast, the lowest pirenzepine dose used (10 mg) induced a delayed stimulation of bicarbonate output, and bicarbonate concentration was not altered. PMID- 3841229 TI - [Thyroid antibodies and their diagnostic value]. AB - Using commercially available test kits, thyroid-stimulating immunoglobulin (TSIg), microsomal thryoid antibodies (MAK) und antibodies against thyroglobulin (TAK) were measured in sera of 201 patients. Over 13% inhibition of TSH-binding to TSH receptor (TSIg) was found in 18 of 25 (72%) patients with hyperthyroid Graves' disease, in 18 of 61 (30) patients with Graves' disease who have become euthyroid, in 4 of 33 (15%) patients with autoimmune thyroiditis, in one of 20 patients with hyperthyroid multinodular goitre or with iodine-induced hyperthyroidism, and in 2 of 55 patients with nontoxic goitre but in none of 7 patients with congenital hyperthyroidism. When further subdividing the patients with Graves' disease who were euthyroid, TSIg values were abnormal in 47% of the patients still under treatment and in 20% of those in remission without treatment. The simultaneous presence of MAK and TAK was most often found in patients with autoimmune thyroiditis, less frequently in patients with Graves' disease and never in patients with other thyroid disorders. MAK and TAK were only detectable in patients with Graves' disease who also had TSIg. The diagnostic, prognostic and follow-up value of the three antibodies is discussed. PMID- 3841230 TI - [A case of vaginal adenocarcinoma after uterine exposure to diethylstilbestrol]. AB - From 1946 to 1971, diethylstilbestrol, a nonsteroid synthetic estrogen, came in for widespread use in the USA, and in other countries only occasional use, for the treatment of high-risk pregnancies. In 1971 a retrospective epidemiologic study showed a close association of this therapy with occurrence of vaginal and cervical adenocarcinoma in young women (mean age 19 years). Up to 1981 63% of 429 clear cell carcinomas of the vagina and cervix were related to DES exposure in utero in the USA. Following reports on a few cases in other countries, the present report is the first in a Swiss female, aged 23, with stage III DES induced adenocarcinoma of the vagina. The risk of DES-related adenocarcinoma is estimated at about 1%, but benign teratogenic lesions are present in over 50% of patients. Vaginal adenosis is the most frequent finding, but other malformations of vagina (septa), cervix, uterus and fallopian tube may be found. Malformations of the genital tract have also been described in DES-exposed male offspring. PMID- 3841231 TI - Intraspinal narcotic analgesia in the treatment of chronic pain. AB - The results of intraspinal narcotic analgesia (INA) in 43 patients with chronic nonmalignant pain syndromes are reviewed. A protocol has been established to improve proper patient selection and includes three phases of study. Most of the patients have had INA for 2 years now. In those patients qualifying for continuous delivery systems (CDS), 65% had good to excellent relief of pain while 34% were considered failures for a variety of reasons. Apparent tolerance development in many of the patients was, in fact, due to technical problems with the epidural catheter instead. PMID- 3841232 TI - Protein C levels in disseminated intravascular coagulation and thrombotic thrombocytopenic purpura: its correlation with other coagulation parameters. AB - Protein C was measured by means of enzyme-linked immunosorbent assay (ELISA) in plasmas from 58 normal subjects, 39 patients with disseminated intravascular coagulation (DIC) and 5 patients with thrombotic thrombocytopenic purpura (TTP). Protein C levels ranged from 69.7 to 163.6% (95% confidence limits) in normal subjects. In patients with DIC, protein C concentrations were significantly decreased, with a geometric mean value of 42.1%. Protein C concentration was positively correlated with plasma prothrombin, antithrombin III and serum pseudocholinesterase, and was negatively correlated with von Willebrand factor antigen (vWF:Ag) and vWF:Ag/factor VIII ratio. These findings suggest that low protein C concentrations in DIC mean a consumption of protein C probably due to its activation by thrombin and/or impaired liver synthetic function. In patients with TTP, protein C levels were normal with a geometric mean value of 116.7%, indicating that the pathophysiology of TTP is quite different from that of DIC. PMID- 3841233 TI - Protein C levels in late pregnancy, postpartum and in women on oral contraceptives. PMID- 3841234 TI - Severe antigenic deficiency of protein C associated with moderate deficiency of protein C activity. PMID- 3841235 TI - Influence of heparin cofactor II (HCII) on the determination of antithrombin III (AT). PMID- 3841236 TI - Hepatic microsomal metabolism of isoprene in various rodents. AB - Microsomal monooxygenases of various rodents metabolise isoprene to the corresponding monoepoxides, 3,4-epoxy-3-methyl-1-butene and 3,4-epoxy-2-methyl-1 butene. The kinetic constants (Km and Vmax) for the formation of the major products were determined by gas-liquid chromatography (GLC). The minor product was further epoxidised to the mutagenic isoprene dioxide by the microsomes of all rodents studied. The Km and Vmax for this subsequent epoxidation were determined and phenobarbital was found to be a good inducer in all species. PMID- 3841237 TI - Computer prediction of serum theophylline concentrations in ambulatory patients. AB - This study assessed the ability of a computer program Simulated Kinetics (SIMKIN) to predict serum theophylline concentrations in ambulatory patients receiving oral theophylline. Data were collected by retrospective review of prospectively obtained data. A total of only 20 measured serum theophylline concentrations could be included in the study, although records of 195 patients were reviewed. An estimated patient compliance of 90-110% was required and was computed using prescription refill information. Predicted serum theophylline concentrations were generated for each patient by entering into the SIMKIN program the characteristics pertinent to theophylline disposition and the patient's theophylline dosing regimen. Actual and SIMKIN-predicted theophylline concentrations were compared by using simple linear regression and by constructing a 95% confidence interval around the mean prediction error and root mean squared error. The ability of SIMKIN to predict therapeutic category, i.e., subtherapeutic, therapeutic, or toxic, was assessed using Fisher's exact test. SIMKIN predictions of individual theophylline concentration were insufficiently accurate to replace confirmatory followup monitoring of actual levels. However, SIMKIN was able to predict the therapeutic category with 70% accuracy. We conclude that SIMKIN may be useful for categorizing a dose regimen of theophylline as therapeutic, but that it is of little use in predicting individual concentrations in outpatients when literature-averaged pharmacokinetic parameters are the sole criteria for prediction, and compliance cannot be accurately assessed. PMID- 3841238 TI - Atypical cilia in hyperplastic, metaplastic, and dysplastic human bronchial mucosa. AB - Twenty-two cases displaying potentially precancerous epithelial changes of the bronchial mucosa--including basal and goblet cell hyperplasia, epidermoid metaplasia, and dysplasia--showed a wide variety of cilial abnormalities on the ultrastructural level. The changes comprised abnormal configurations of the ciliary plasma membrane, variations in the amount of ciliary matrix, disorganization of basal bodies, and diverse alterations of the axonemal microtubular pattern. More than one such alteration was observed in one and the same case, and there was no correlation with the actual type of epithelial lesion nor the degree of dysplasia. These changes, interpreted as abnormal ciliary regeneration in severely damaged ciliated cells, are potentially reversible and seem to represent a nonspecific response of the affected cells to an ample spectrum of noxes. Their diagnostic significance is poor, especially with regard to the modification of the axonemal microtubular pattern, unless the entire clinical picture suggests an immotile cilia syndrome. PMID- 3841239 TI - Use of the muscle relaxant atracurium in a myasthenic dog. PMID- 3841240 TI - Observations on the efficacy of ivermectin in the control of cattle ticks in Zambia. AB - The efficacy of multiple subcutaneous injections (200 micrograms/kg) of ivermectin in the control of naturally occurring tick infestations on traditionally managed Tonga-IIa (Sanga type) calves and yearlings was assessed in two field trials. In the first trial Boophilus decoloratus infestations were decreased following treatments at monthly intervals. In the second trial, with weekly and two weekly treatment intervals, infestations of Rhipicephalus appendiculatus were controlled less effectively than infestations of Amblyomma variegatum or Hyalomma truncatum. However, no engorging females of any of the tick species were found on treated animals. In treated cattle, significantly greater liveweight gain occurred than can be attributed to the control of tick infestations alone. PMID- 3841241 TI - [Embryotoxic and teratogenic action of the organomercury fungicide falizan on chick embryos]. AB - Tested was the embryotoxic and teratogenic action of the organomercurial preparation falizan (a phenyl-mercury acetate), containing 2 per cent mercury, in chick embryos. It was introduced into the viteline sac of 3-day-old embryos in the form of a water solution as follows: Group I--0.1 cm3 per egg of a 13 per cent solution of falizan (= 260 micrograms Hg); group II--0.1 cm3 per egg of a 6.5 per cent solution (= 130 micrograms Hg); group III--0.1 cm3 per egg of redistilled water (biologic control); and group IV--the eggs were left untreated (negative control). The amount of the preparation was adjusted to eggs of 65 + 1 g weight. The optimal growth and development of the embryos was guaranteed with the use of an Optima hatching unit, providing humidity of up to 65 per cent = 89 F. The embryotoxic and teratogenic effect of the preparation was recorded on the 14th and the 20th day of incubation. A dose of 260 micrograms Hg was found to be strongly toxic, mortality rate reaching up to 48 per cent from the 7th to the 14th day. Teratogenically, there were no malformations in the test groups both on the 14th and the 20th day of embryogenesis. PMID- 3841242 TI - [Statistical analysis of the results of clinico-experimental studies]. PMID- 3841243 TI - [Malignant lymphoma of the stomach]. PMID- 3841244 TI - [Acute pseudo-obstruction of the colon--significance of colonoscopy for diagnosis and therapy]. AB - Acute colonic pseudoobstruction (Ogilvie's syndrome) predominantly involves elderly patients with serious underlying diseases and is defined by massive colonic distention without mechanical obstruction. Therapy of choice included surgical cecostomy with a mortality rate of over 30 percent. Fiberoptic coloscopy provides a new effective treatment modality for colonic decompression. We discuss the cases of 8 patients with Ogilvie's syndrome, who were successfully treated by colonoscopic decompression. Special guidelines for successful and safe performance of the procedure are suggested. PMID- 3841245 TI - Fasting effect of the fine structure of the interstitial cells of the pregnant Myotis myotis ovary. PMID- 3841246 TI - [Meniscectomy--total, partial, open or closed operation?]. AB - The importance of the menisci for stability of the knee joint is pointed out. Because of its mechanical importance in the knee a more conservative behaviour for treatment is recommended. Even the degenerated meniscus can play his role sufficiently. For each type of lesion individual surgery is applied, especially if there is locking impingement linked with mechanically induced arthritis. Out of the clinical results follows that arthroscopic partial meniscectomy is superior to conventional open meniscectomy, especially in the early postoperative period. PMID- 3841247 TI - [Genetic factors in the regulation of the hypophyseo-adrenal system in aggressive and sexual interactions of male laboratory mice]. PMID- 3841248 TI - [Lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase in skeletal muscle. 12. The influence of electric stimulation of beef carcasses on activity and subcellular distribution]. AB - The effect of electrical stimulation (ES) of beef carcasses at 450 V on the total extractable activity and subcellular distribution of the mitochondrial enzymes lipoamide dehydrogenase, citrate synthase and beta-hydroxyacyl-CoA-dehydrogenase in skeletal muscle (activities in the supernatant of a phosphate buffer extract and in muscle press juice) was studied. There was no influence of ES on the total activity and the subcellular distribution of these enzymes in the muscle tissue stored at +2 degrees C for 7 days nor did ES influence the extent of the release of the three enzymes from the mitochondria into the sarcoplasm by freezing (-20 degrees C) and thawing. From these results it can be concluded that ES does not result in an appreciable disintegration of the inner membrane of muscle mitochondria. PMID- 3841249 TI - [A modified mating regimen for the laboratory mouse]. PMID- 3841250 TI - [Pregnancy monitoring with the Westin gravidogram. I: Value of the cervix score in the diagnosis of premature labor]. AB - The outpatient department for pregnant women at the district hospital, womens department of Suhl/GDR uses the so-called "gravidogram" according to Westin. To assess the predictive value of the cervix score (modus Westin) all patients had been examined vaginally on the occasion of each consultation. In 969 singleton pregnancies the rate of premature deliveries was 6.5% and so within the limits of international statistics. There was a remarkable tendency to newborns weighting more than 2000 g and a duration of pregnancy longer than 35 weeks. The shift involves more chances of a undisturbed development of the newborns. Repeated assessment of the cervix score in the course of pregnancy is recommended. PMID- 3841251 TI - Our experience with sacral evoked potentials in impotence. AB - Pudendal-pudendal and pelvic-pudendal sacral evoked potentials (ESP) were studied in 40 patients complaining of erectile impotence. Electromyographic results allowed us to recognize the organic cause of impotence in 4 men with visceral neuropathies. Sacral evoked responses extend our diagnostic possibilities in evaluating erectile impairment secondary to subclinical neurological abnormalities. PMID- 3841252 TI - Serum concentrations and urinary excretion of lidocaine and its two desethylated metabolites after spinal anaesthesia using lidocaine or lidocaine with phenylephrine. AB - In 13 patients undergoing transurethral prostatic resection under spinal anaesthesia with heavy lidocaine or with heavy lidocaine plus phenylephrine hydrochloride, the serum concentrations of lidocaine, monoethylglycinexylidide and glycinexylidide and their renal excretion were measured with a HPLC method. Seven patients were given lidocaine alone 1.25 mg/kg and six lidocaine 1.25 mg/kg mixed with phenylephrine hydrochloride 3 mg. There was no significant difference between the two groups either in the serum levels of lidocaine or in the renal excretion rate of lidocaine and its metabolites. This finding gives support to the opinion that phenylephrine in low doses has no prolonging effect on spinal anaesthesia performed with heavy lidocaine. PMID- 3841253 TI - Studies on the initial reactive sites for platelet activation. Cationized ferritin- and wheat germ agglutinin-binding sites on the cells. AB - The binding sites for cationized ferritin or ferritin-conjugated wheat germ agglutinin on the cell surface were studied on platelets before or after fixation in glutaraldehyde. The effects of neuraminidase on the binding sites were also demonstrated after fixation of the platelets. Changes in the binding sites and distribution pattern due to exposure to these ligands were further investigated in the unfixed platelets under a variety of conditions such as incubation time and medium. The fixed platelets incubated with either ligand showed an even and continuous distribution of particles on the cell surface. In the unfixed platelets, the ligands were rapidly moved and aggregated probably by lateral migration after binding to the cell surface. The ligands were also bound to the membrane surface and simultaneously appeared in the interior of the open canalicular system. As the binding sites were moved on the cell surface as well as into the open canalicular system, morphological changes suggestive of platelet secretion occurred. The binding sites of either ligand were redistributed on the platelet cell surface. Glycoprotein Ib, thought to be the receptor site for wheat germ agglutinin on the cell surface, contains sialic acids that contribute to the negative charge of platelets. Therefore, glycoprotein Ib may play an important role as the initial reactive site for thrombotic stimuli. PMID- 3841254 TI - [The structure of rabdoserrin A, isolated from Rabdosia serra (Maxim) Hara]. PMID- 3841255 TI - [Studies on the chemical constituents of hubeibeimu (Fritillaria hupehensis Hsiao et K. C. Hsia). III. Isolation and identification of hupehenioside]. PMID- 3841256 TI - Complete blockade and attenuation of 5-hydroxytryptamine induced analgesia following NA depletion in rats and mice. AB - The effect of pretreatment with the noradrenaline neurotoxin, N-2-chloroethyl-N ethyl-2-bromobenzylamine (DSP4), upon the analgesia induced by various doses of 5 hydroxytryptamine (5-HT) was examined in rats and mice. DSP4 treatment (2 X 50 mg/kg, intraperitoneally) of rats caused a complete blockade of 5-HT induced analgesia in the tail-flick, hot-plate and shock titration tests. DSP4 treatment (1 X 50 mg/kg, intraperitoneally) of mice caused a partial blockade of 5-HT induced analgesia in the hot-plate test, but no significant blockade in the tail flick test. These results are discussed with regard to serotonergic-noradrenergic interactions and the species discrepancy in nociceptive testing. PMID- 3841257 TI - [Normal pattern and semicomputerized clinical report of the visual evoked potential obtained using a gas lamp]. PMID- 3841259 TI - Appearance of albumin-producing cells in the liver of analbuminemic rats on aging and administration of mutagens. AB - The lack in serum albumin in analbuminemic rats, a strain derived from Sprague Dawley rats, was found to be due to deficient synthesis of albumin in the liver caused by a disturbance in the processing of albumin mRNA. The serum albumin gene was cloned from analbuminemic rats and from parental normal Sprague-Dawley rats. Analyses of the nucleotide sequences of these albumin genes revealed that there is a seven base pair deletion in the HI intron of the albumin gene of analbuminemic rats. This deletion extends from the 5th to the 11th base of the 5' end of the intron causing change in the nucleotide sequence of the 5'-end of the HI intron from GTAGGTT to GTAGCGA. The HI intron sequence was found to be accumulated in the nuclear RNA of analbuminemic rat liver indicating blocking of mRNA splicing. Although analbuminemic rats are almost completely deficient in serum albumin, a small but appreciable amount of "albumin" was detected in their serum. This protein was purified by immunoprecipitation and SDS-gel electrophoresis and shown to have the same immunological crossreactivity and digestion patterns with V8 protease and papain as those of normal rat serum albumin. The concentration of "albumin" increased slightly upon aging of analbuminemic rats. The existence of serum albumin in hepatocytes of analbuminemic rats was studied immunohistochemically by the peroxidase anti peroxidase method. There were about 1/10(5) albumin-positive cells, presumably albumin-producing hepatocytes at birth, and their number increased gradually to 100 approximately 200/10(4) about 24 months after birth. When the hepatocarcionogenic mutagen 3'-methyl-4-dimethylaminoazobenzene was administered to analbuminemic rats, the number of albumin-positive cells in the liver increased 8-fold in 5 weeks and 10-fold in 15 weeks. A similar increase was observed after administration of acetylaminofluorene, but not after partial hepatectomy or administration of diethylnitrosamine. PMID- 3841258 TI - Sex-education needs and interests of high school students in a rural New York county. AB - Seventy-five boys and 88 girls from three high schools in a rural county of New York state took a sex-education quiz and were asked to describe their sexual and contraceptive experiences and sex-education interests. Consistent with most previous research, nonvirgin teenagers who earned better grades on the sex education quiz failed to use more effective contraceptives than nonvirgins who had performed poorly on the quiz. There was a striking similarity among students' descriptions of sex-education interests, regardless of their gender, previous enrollment in a health course, or experience with sexual intercourse. Very few teenagers (9%) were completely satisfied with their high school's current sex education program. The majority (57%) wanted to learn more about contraceptives and venereal disease prevention, either as the primary focus of their sex education curriculum or in combination with other topics such as sexual values, the biology of reproduction, and information about the human body. Many adolescents (19%) seemed confused about their sex-education needs and described a vague interest in everything sexual. Only 2% of the students thought sex education should provide them with erotic information or techniques for increasing sexual pleasure. The remaining students wished that their sex education courses would give them additional information solely about sexual values (5%) or the biology of reproduction and knowledge about the body (8%). PMID- 3841260 TI - [Chemotherapy for advanced bladder cancer: clinical evaluation of chemotherapy for locally advanced or metastatic bladder cancer and adjuvant chemotherapy for deeply invasive bladder cancer following radical cystectomy]. AB - Sixteen patients with locally advanced or metastatic bladder cancer were treated with cis-diamminedichloroplatinum (cis-DDP) alone or in combination with other drugs. Eight patients were given cis-DDP intravenously, 6 patients intraarterially and 2 by both methods. Seven patients (44%) showed a partial response, 2 showed a minor response and 4 remained unchanged. Of the 6 patients treated with arterial infusion, 3 achieved a partial response while only 2 of the 8 patients administered intravenously showed a partial response. Eight patients with deeply invasive bladder cancer were treated with cis-DDP alone or in combination with other drugs following radical cystectomy. Cis-DDP was administered every week for 3 courses and every month for 12 courses at a dose of 50 mg and cis-DDP, adriamycin and 5-FU (CAF) were administered at 3 weeks interval for 3 courses and every month for 12 courses. All patients in this group were alive with a median survival of 20 months. One patient had a recurrence 5 months postoperatively. Adjuvant chemotherapy with cis-DDP or their combination was effective. Toxicity was generally tolerable. PMID- 3841261 TI - [Implant operation of penile inflatable prosthesis for a patient with erectile impotence due to radical cystectomy: a case report]. AB - The hydraulically inflatable penile prosthesis consists of an inflate-deflate pump, a storage reservoir and paired cylinders and it is able to provided a more physiologically functional penis. We report our surgical experience of implant of an inflatable penile prosthesis for postoperative impotence. The patient was a 51 year-old male with impotence, who had received radical cystectomy and ilial conduit formation for transitional cell carcinoma of the bladder (G3, pT3NoMo.) 9 months earlier. There was nothing particular except for the postoperative status on physical, laboratory and X-ray examinations. He was diagnosed to have organic impotence (vasculogenic) by sexual functional tests. Auto-injection of the corpus cavernosum with papaverine HCl was attempted but an erection was not induced by the injection. So, implant operation of an inflatable penile prosthesis was performed by the lower abdominal approach. His postoperative course was uneventable and practice to deflate and inflate the cylinders was started at 2 weeks after the operation and he was able to have sexual intercourse at 5 weeks after the surgery. Now (3 months after the operation), he can have sexual intercourse with an orgasm but without ejaculation and he and his wife are both satisfied with the postoperative status. PMID- 3841262 TI - Binding of lectin-fluorescein conjugates to intracellular compartments of growth plate chondrocytes in situ. AB - In this study, lectin-binding techniques are applied to growth-plate cartilage to analyze the intracellular localization of lectin-binding glycoconjugates of chondrocytes in situ. The binding of ten fluorescein-conjugated lectins is analyzed on 1-micron-thick Epon-embedded, nondecalcified sections of growth plates from Yucatan swine. Comparisons are made to intracellular binding in chondrocytes of tracheal, articular, and auricular cartilage. Ear epithelium, tracheal epithelium, and kidney are used as positive control tissues for the specificity of lectin binding. Only the mannose-binding lectins had affinity for the RER and nuclear envelope. Eight lectins reacted within the Golgi complex with characteristic patterns which ranged from localized fine linear strands to extensive vesicular accumulations. When cartilage slabs were exposed before embedment to the ionophore monensin to disrupt intracellular transport through the Golgi, it was possible to define differential subcompartments of the Golgi complex, based upon sites of sugar addition. Also, it was possible to characterize the cytoplasmic deposits of reserve-zone chondrocytes which were positive with concanavalin A as glycogen, based upon their sensitivity to amylase. This method allows resolution at the light-microscopic level of lectin binding glycoconjugates with localization to specific organelles. Patterns of intracellular binding were consistent with biochemical data relating to the subcellular localization of processing steps of complex carbohydrates prior to secretion. PMID- 3841263 TI - Regional distribution and release of peptide YY with fatty acids of different chain length. AB - The present study examines peptide YY responses to regional intestinal perfusion of fatty acids of different chain length--dodecanoate and oleate. Six dogs with chronic gastric, duodenal, and jejunal fistulas were studied. Proximal perfusates were administered into the duodenum and diverted through an intestinal fistula placed 45 cm beyond the duodenal cannula. Distal perfusates were administered into the caudal stoma of this intestinal stoma. Peptide YY responses to proximal, distal, and whole-gut perfusion were compared. Proximal perfusion with oleate or dodecanoate failed to release peptide YY. In contrast, distal and whole-gut perfusion with either fatty acid produced significant increases that were of similar magnitude. Immunocytochemical studies demonstrated that peptide YY cells predominated in the canine ileocolonic mucosa and decreased progressively in an orad direction. We conclude that peptide YY release is not dependent on fatty acid chain length and that the duodenum does not play a dominant role in peptide YY release. As such, peptide YY release differs from that of its cousin pancreatic polypeptide and may result at least in part from direct stimulation of the peptide YY cell in the ileocolonic mucosa. PMID- 3841264 TI - Terminal deoxynucleotidyl transferase activity in thymocytes of kittens. AB - Activity of terminal deoxynucleotidyl transferase (TdT) was measured in the thymus of 8- to 14-week-old kittens. Microscopic evidence of involution or other morphologic changes were not observed in formalin-fixed hematoxylin and eosin stained thymic tissue sections. Thymic tissue from young kittens (8 weeks old) had low TdT activity, as determined by enzymatic catalysis or immunoassay procedures. Markedly higher TdT activity was measured in thymic tissue of older kittens (13 to 14 weeks old). Feline TdT catalyzed the polymerization of deoxynucleotides at a higher rate in Mn2+ than in Mg2+. Results of protein immunoblotting experiments indicated that the major form of feline thymic TdT is a single, high molecular weight polypeptide in 13- to 14-week-old kittens. Detection of TdT activity in the feline thymus indicated that TdT may have the same diagnostic and therapeutic value in feline oncology as in human oncology. PMID- 3841265 TI - [Study of hereditary fructose intolerance by methods of molecular biology]. AB - Fructose intolerance is caused by a deficit of the liver aldolase B enzyme. Its molecular mechanisms were studied at different sites: The protein was studied by a method combining electrophoresis, transfer and immunology. It was present in the 15 cases examined. The genetic variability was demonstrated by the quantitative differences of the immunoreactive proteins. Aldolase messenger RNA was prepared and used to direct in vitro synthesis of human aldolase. Cloning complementary DNA of human aldolase was achieved by using the messenger RNA. Two clones were prepared. The aldolase B gene was then analysed using restriction enzymes in 60 control subjects and 11 patients. An abnormality of the DNA was demonstrated in one of the patients and in her father. PMID- 3841266 TI - [Association of autoimmune dementia, Basedow's disease, and Gougerot-Sjogren syndrome]. AB - The authors observed one case of myoclonic dementia reversible with steroid therapy, associated with Grave's disease and Sjogren's syndrome. A circulating IgG fraction was demonstrated reacting specifically with cerebral micro-vessels and which evolved in parallel with the neuro-psychiatric disturbances. These results support the hypothesis of an autoimmune vasculitis causing the dementia. The persistence of abnormalities one year after clinical cure showing an alteration of the blood-brain barrier associated with the appearance of circulating antibodies against the hypophyseal cells, and in view of the predictive value of these antibodies, suggests a possibility of the eventual apparition of an Alzheimer type dementia. PMID- 3841267 TI - Surgical management of massive perianal hidradenitis suppurativa. AB - Hidradenitis suppurativa of the perineum and buttocks is a devastating disease often causing patients years of pain, discomfort, and eventual social isolation. The chronic form of the disease results from a lack of aggressive surgical intervention when the patient is first seen. It is characterized by a malodorous drainage from multiple sinus tracts encased in marked scarred and fibrotic tissue. In contrast to axillary involvement, the perianal form of hidradenitis suppurativa is associated with an increased frequency of anemia, fistulous communications with bowel and urinary tract, and the development of carcinomas. Several cases illustrating the debilitating nature of the disease and its optimal management are presented. This report illustrates that (1) a well-planned preoperative and postoperative bowel regimen can eliminate the need for a diverting colostomy, even in the most extensive forms of perianal disease, (2) radical excision is expedited and blood loss is minimized by the use of a Shaw hot knife (Oximetrix, Mountain View, CA), (3) the quilted application of meshed split-thickness skin grafts as a primary procedure provides rapid closure of the surgical defect and minimizes patient discomfort, and (4) aggressive surgical intervention in severe cases provides a chance for a rapid recovery from this crippling disease. PMID- 3841268 TI - Singapore in international comparisons of birthweight and perinatal mortality. AB - The position of Singapore as regards birthweight distribution and perinatal mortality has been compared with six countries in the 1973 WHO study namely, Austria, Cuba, Hungary, Japan, New Zealand and Sweden. Birthweight distribution and perinatal mortality reflect both the social and health conditions of a population and the standards of obstetric and paediatric care, and seeing where a country ranks in the international comparison of them may play a role in the formulation of health policy for that country. Singapore was well placed for the proportion of very low birthweight babies (less than 1,500 grams), ranking 2nd for both live births (0.5%) and total births (0.7%). It was however not so well placed for proportion of low birthweight babies (less than 2,500 grams), ranking 5th for both live births (8.8%) and total births (9.2%). With regard to perinatal mortality Singapore at 20.0 per 1,000 total births ranked 4th and this improved to 3rd after standardizing for birthweight and in fact was little different from Hungary (1st) and Sweden (2nd). Given that standardization for birthweight largely removes the effect of "socioeconomic and demographic factors" so that remaining differences to a large extent reflect medical care, this indicates a relatively high standard of perinatal care in Singapore. The problems of interpretation, the implications of the findings and suggestions for improving birth statistics in Singapore are discussed. PMID- 3841269 TI - Do leukotrienes account for antigen-induced bronchoconstriction in the guinea pig? PMID- 3841270 TI - Multiple sclerosis: activated cells in cerebrospinal fluid in acute exacerbations. AB - Cerebrospinal fluid (CSF) lymphocytes from three young patients undergoing acute exacerbations of multiple sclerosis were studied by flow cytometry. Using a new method that simultaneously measures cell-surface antigens and the cell-cycle phase, we determined that the CSF lymphocytes in these patients were activated. The majority of the activated cells expressed the OKT4 phenotype, while very few expressed the OKT8 phenotype. PMID- 3841271 TI - Interferon in papilloma virus infections. AB - To date (5/2/85), systemic leukocyte interferon has been shown to have little or no therapeutic effect on cutaneous warts. On the other hand, leukocyte interferon administered systemically may have a significant adjunctive role to play in management of recurrent laryngeal papillomatosis, but this is difficult to determine in the absence of placebo controlled, double blind studies. Intralesional administration of leukocyte interferon for cutaneous warts is able to eradicate individual warts, but is not practical presently because the responses are delayed and require multiple injections. Further studies are necessary to determine whether clinically practical regimens can be achieved. PMID- 3841272 TI - [Non-immunologic hydrops fetalis and congenital chylothorax]. AB - A child was born at the 37th week of pregnancy with hydrops fetalis. Hydramnios and hydrothorax had been proven by fetal ultrasonography. No fetal or maternal etiology was found. At age 4 days, at the beginning of enteral nutrition, the pleural effusion became characteristic of chylothorax. Recovery occurred after 2 weeks of parenteral nutrition. Chylothorax might be an unrecognized etiology of non immune hydrops fetalis. The relationships between both conditions and the interest of prenatal treatment are discussed. PMID- 3841273 TI - [Nitrogen fractions of human milk during the first week of lactation. Comparison of milk from mothers of term and premature newborn infants]. AB - Nitrogen fractions in human milk (total nitrogen, non protein nitrogen, casein nitrogen and soluble protein nitrogen) were determined by direct dosage or by calculation during the first 7 days of lactation in 61 mothers feeding artificially. Twenty-five delivered at term and 36 prematurely. In all cases a decrease in all nitrogen fractions was observed. The amounts of total nitrogen and soluble proteins were similar in both groups. A difference in the distribution of the nitrogen fractions occurs only on the 8th day following delivery. Milk from mothers who deliver prematurely contains more casein and less non protein nitrogen amounts. PMID- 3841274 TI - PHI-like immunoreactivity in the nervous system of the cockroach (insect) and Aplysia (mollusc) with special reference to its relationship to VIP-like immunoreactivity. AB - Studies in mammals have indicated that PHI (peptide histidine isoleucine) and VIP (vasoactive intestinal polypeptide) share a prepropeptide, and that both peptides are contained in the same neurons. The present study proposes that this relationship may not hold true in protostomian invertebrates. In the nervous system of the cockroach (Insecta, Arthropoda) and Aplysia (Gastropoda, Mollusca) distribution of PHI and VIP was examined by immunocytochemistry. In both animals neurons containing PHI-like immunoreactivity were numerously found and only a small part of them in the cockroach contained VIP-like immunoreactivity. These findings suggest that in these invertebrates, PHI may play a more important regulatory role than VIP. Possible reasons for the difference in the distribution of immunoreactivities for PHI and VIP are discussed. PMID- 3841275 TI - [Use of "fermosine"--fodder yeast in a multi-generation trial with chickens. 3. Evaluation of health safety in a long-term toxicologic test]. AB - In a 3-generation experiment with a total of 2520 hens and 210 cocks of the species 'White Leghorn' kept in cages, the compatibility of 5.0%, 7.5% and 15% 'fermosin' torula yeast in the mixed feed ration was tested under long-term toxicologic aspects. The parameters investigated and relevant for the toxicological statement, with high probability, did not show a negative influence of the test ration. Thus, a good compatibility of the tested yeast product 'fermosin' for laying hens can be stated. PMID- 3841276 TI - [Annual meeting of the Society for Nutrition of East Germany. Animal Nutrition Section. 10-11 October 1984, Rostock. Abstracts]. PMID- 3841277 TI - [Immunosuppressive effects of 1 alpha, 25-dihydroxyvitamin D3 on human lymphocytes and monocytes/macrophages. II. Roles of T cells and monocytes macrophages in the suppression of PWM-induced immunoglobulin synthesis]. PMID- 3841278 TI - [Morphology of the sinoatrial node and its vascularization in the heart of stillborn term infants]. PMID- 3841279 TI - Initial experience with vincristine, adriamycin and cisdichlorodiammine platinum combination chemotherapy of advanced ovarian carcinoma. PMID- 3841280 TI - Efficacy of ivermectin against nematodes of horses, including small strongyles resistant to benzimidazole. PMID- 3841281 TI - [Protein metabolism in the small for gestational age newborn in relation to the severity of fetal malnutrition]. AB - The daily nitrogen balance, the amino acid concentrations in serum and urine, and the bile acid concentrations in the serum on the eighth day of life were estimated in newborn infants small for gestational age with different degrees of fetal malnutrition. The amino acid concentrations in urine and serum as well as the total nitrogen losses by urine increase in dependence on the severity of fetal malnutrition. In addition the bile acid concentrations were elevated whereas the urea concentrations in serum remained unchanged. These results point to a deranged liver function which depends on the degree of fetal malnutrition. These special metabolic conditions have to be considered in the nutrition of such infants. The bile acid concentrations seem to be an efficient parameter to estimate this metabolic situation. PMID- 3841282 TI - Lung surfactant prevents allergic bronchial constriction in ovalbumin sensitized guinea pigs. AB - The stimulation of intrabronchial mast cells and macrophages by inhaled allergens play a major role in allergic bronchial asthma. Bronchial surfactant is proposed to change cell surface receptor response in the bronchial tree. In this investigation natural surfactant was found to reduce bronchial obstruction after intratracheal ovalbumin challenge in artificially ventilated guinea pigs sensitized to ovalbumin. After ovalbumin challenge tidal volume decreased to 59.2 +/- 14 % of the control value in surfactant treated animals. In solvent treated and untreated control animals, tidal volume decreased to 18.8 +/- 11% and 18.1 +/ 11% of the control value, respectively. PMID- 3841283 TI - Deoxynucleotide sequence of an insect cDNA codes for an unreported member of the Chironomus thummi globin family. AB - Synthetic oligonucleotides served as probes to isolate insect globin clones from a Chironomus thummi cDNA bank. The cDNA insert of one clone (pC-S9) was completely sequenced by the dideoxy termination procedure. Beginning at the 5' end of the coding region, the 584 base pair sequence encodes most of an N terminal hydrophobic signal sequence and the complete sequence for a mature secreted globin, and contains a polyadenylation recognition site 3' to an appropriate stop codon. The inferred amino acid sequence is that of an unreported variant of hemoglobin VIIB. Based on the number of differences between Hb VIIB chains, the pC-S9 gene has been evolutionarily independent longer than the other (two) members of the globin VIIB subfamily. PMID- 3841284 TI - Distribution pattern of sudanophilic plaques in the descending thoracic and proximal abdominal human aorta. AB - The localization of sudanophilic plaques around the intercostal ostia and the origin of the superior mesenteric and coeliac artery was examined in 38 human aortae. The perimeter of the opened aorta and the outline of each sudanophilic plaque were digitized and computerized. By means of a special program the results were displayed as progressive contour lines connecting points with an equal frequency of plaques. This study shows that the sudanophilic plaques have a distinct spatial distribution both in the thoracic and abdominal aorta. Around the intercostal ostia peak frequency of plaques is found just proximal to the lower lip of the ostia. In the bifurcation of both the superior mesenteric and coeliac artery the plaques are present on the outer walls while the inner walls and the apex itself are free of plaques. PMID- 3841285 TI - Nutrition of newborns small for gestational age with human milk lyophilisate enriched human milk during the first week of life. AB - In 24 very low birth weight infants appropriate or small for gestational age, the metabolic response to nutrition with human milk lyophilisate enriched human milk was estimated during the first week of life. In contrast to newborns appropriate for gestational age, in newborns small for gestational age signs of metabolic overloading could be observed: increased urinary amino acid excretion and neonatal cholestasis. Both depended on the degree of fetal growth retardation. It was concluded that nutrition with human milk lyophilisate enriched human milk cannot be recommended for very low birth weight infants during the first week of life. In newborns small for gestational age the metabolic situation has to be estimated before starting a high protein diet. If the level of total bile acids amounts to more than 30 mumol/l, protein intake should be increased carefully during the first week of life. PMID- 3841286 TI - Intrathecal morphine and multiple fractured ribs. PMID- 3841287 TI - 2,3-Cyclopyrophosphoglycerate in methanogens: evidence by 13C NMR spectroscopy for a role in carbohydrate metabolism. AB - The novel compound 2,3-cyclopyrophosphoglycerate (CPP) is the major small molecule carbon pool in Methanobacterium thermoautotrophicum. High-field 13C NMR 13CO2 pulse/unenriched CO2 chase experiments have shown that the labeled CPP rapidly loses its 13C to an insoluble pool, while the CPP steady-state concentration is maintained (as monitored by 31P NMR spectroscopy). The biosynthesis of CPP from CO2, acetyl coenzyme A, and pyruvate as precursors has been established by a 13C NMR study of ethanol extracts of Mb. thermoautotrophicum fed with 13CO2, [1-13C]- and [2-13C]acetate, and [1 13C]pyruvate. That CPP is a post-phosphoenolpyruvate metabolite has been confirmed by in vitro experiments with cell extracts. A role for CPP in carbohydrate metabolism was established when [1-13C]glucose fed to cells resulted in the formation of [3-13C]CPP exclusively. Possible functions of CPP within the cell are discussed. PMID- 3841288 TI - Amino acid sequence of an active fragment of rabbit skeletal muscle myosin light chain kinase. AB - The amino acid sequence of a 368-residue segment at the carboxyl-terminus of rabbit skeletal muscle myosin light chain kinase (MLCK) has been determined. The sequence was derived primarily from analysis of two complementary sets of fragments obtained by cleavage at methionyl and arginyl bonds in S carboxymethylated MLCK. The segment included a 360-residue fragment produced by limited tryptic digestion of MLCK. This fragment was both catalytically active and dependent on Ca2+-calmodulin. Unique structural features of MLCK have been identified, and a likely calmodulin interaction site is suggested. Sequence comparisons of MLCK to other protein kinases indicate close structural relationships in spite of marked differences in physicochemical properties, enzymatic characteristics, and regulatory response among these enzymes. PMID- 3841289 TI - Influence of glycophorin incorporation on Ca2+-induced fusion of phosphatidylserine vesicles. AB - The effect of incorporation of glycophorin, the major integral sialoglycoprotein of the erythrocyte membrane, into bovine brain phosphatidylserine (PS) vesicles on the Ca2+-induced fusion of these vesicles has been investigated. Fusion was monitored by the terbium-dipicolinic acid fluorescence assay for the mixing of aqueous contents of the vesicles and by a resonance energy transfer assay that follows the intermixing of membrane lipids. The Ca2+-induced fusion of PS vesicles is completely prevented by incorporation of glycophorin (molar ratio of PS/glycophorin = 400-500:1) for Ca2+ concentrations up to 50 mM. The ability to fuse is partially restored after treating the glycophorin-containing vesicles with neuraminidase, which removes the negatively charged sialic acid residues of glycophorin. Fusion is further facilitated by trypsin treatment, removing the entire extravesicular glycosylated head group of glycophorin. However, Ca2+ induced fusion of enzyme-treated glycophorin-PS vesicles proceeds at a slower rate and to a smaller extent than fusion of protein-free PS vesicles. The influence of the aggregation state of the glycophorin molecules on fusion has been investigated in experiments using wheat germ agglutinin (WGA). Addition of WGA to the glycophorin-PS vesicles does not induce fusion. However, upon subsequent addition of Ca2+, distinct fusion occurs concomitantly with release of vesicle contents. The inhibition of Ca2+-induced fusion of PS vesicles by incorporation of glycophorin is explained by a combination of steric hindrance and electrostatic repulsion between the vesicles by the glycosylated head group of glycophorin and a direct bilayer stabilization by the intramembranous hydrophobic part of the glycophorin molecule. PMID- 3841290 TI - A new bacterial dehydrogenase oxidizing the lignin model compound guaiacylglycerol beta-O-4-guaiacyl ether. AB - A lignin model compound, named in short guaiagylglycerol beta-guaiacyl ether (GGE), contains the beta-0-4 ether linkage that is common in the chemical structure of lignin. A Pseudomonas sp. (GU5) had been isolated as an organism able to grow with GGE as the sole source of carbon and energy. When grown on vanillate, the bacteria contained a NAD+ -dependent dehydrogenase converting GGE to a 355 nm absorbing product. The enzyme, named GGE-dehydrogenase, was purified about 160-fold using gel permeation, ion exchange on DEAE-Sephadex, and dye ligand affinity chromatography. The new protein was about 52 kDa in apparent size with but one polypeptide chain after denaturation and reduction. According to several criteria, the product of GGE oxidation (Km = 12 microM) was identified as the corresponding conjugated ketone at the alpha-carbon of the C3 side-chain. The secondary alcohol function in GGE was apparently the sole target of the enzyme action. However the conversion of GGE into ketone catalyzed by the enzyme was only partial, and did not exceed 50%, probably because only one of the alpha enantiomers was susceptible to enzyme attack. In contrast the ketone, either made by organic synthesis or by enzymic oxidation of GGE, could be totally reduced back to GGE (Km = 13 microM at pH 8.4, 8 microM at neutral pH), with NADH as the reductant, as confirmed by UV absorption and NMR spectra. Other model compounds with no primary alcoholic function, ether linkage or phenolic group were also substrates for the enzyme, confirming the specificity of GGE-dehydrogenase for the alpha-carbon position. Conjugation of the alpha-ketone with an adjacent phenolic nucleus interfered strongly with equilibrium constants and redox potentials of the system according to pH, and the enzyme displayed widely different optima with pH over 9 when oxidizing GGE, below 7 when reducing the ketone. Equilibrium studies showed that the ketone/GGE potential was -0.37 volt at pH 8.7, -0.23 volt at pH 7 (30 degrees C). The significance of this new dehydrogenase and its properties are discussed, especially in the general concern of lignin biodegradation. PMID- 3841291 TI - Effect of dietary mineral and vitamin D content and parathyroidectomy on the plasma disappearance rate of 1,25-dihydroxyvitamin D3 in rats. AB - The plasma disappearance rate of 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] was determined in rats after a single intravenous injection of the tritiated hormone. Tritiated 1,25-(OH)2D3 (120 Ci mmol-1) was administered to rats at a dose of 400 000 dpm kg-1 body weight and the animals were bled between 0 and 8 hours. The dose was estimated to produce negligible perturbations in endogenous plasma levels of 1,25-(OH)2D3. The plasma disappearance of 3H-1,25-(OH)2D3 occurred in two phases. The second phase plasma half-life of 1,25-(OH)2D3 in immature 25- to 35-day-old animals (4.7 hours) was significantly shorter than the second phase plasma half-life of maturing 49- to 65-day-old animals (8.0 hours). Phosphorus deprivation for 12 days significantly prolonged the second phase plasma half-life of 1,25-(OH)2D3 from a control value of 4.9 hours to 10.4 hours. Parathyroidectomy, regardless of the plasma calcium concentrations, shortened the second phase plasma half-life of 1,25-(OH)2D3 from control values of 9.1 hours to 5.0 hours. Calcium deprivation for 7 days did not alter the second phase plasma half-life of 1,25-(OH)2D3. Vitamin D deprivation for 5 weeks increased the second phase plasma half-life from 11.0 to 19.9 hours but the difference was not significant. PMID- 3841293 TI - Neural and anatomic characteristics of peripheral afferent fibers in the milk ejection reflex. AB - Conduction velocities were measured and certain morphologic characteristics were examined of the abdominal mammary nerve in two- to ten-day postpartum rats. This nerve enters the spinal cord at the spinal segmental level T-12. Overall conduction velocity was (Mean +/- S.D.) 18.9 +/- 2.25 m/sec with a major peak at 9.7 +/- 0.72 m/sec. The distribution of conduction velocities in the nerve was similar to that of a typical spinal nerve. Nerve fiber diameters measured between about 1 and 25 microns with peaks at 4.9, 10.5, and 18.9 microns. Injection into the peripheral nerve of fluorescent dye, Lucifer yellow CH (LY), or wheat germ agglutinin-coupled horseradish peroxidase (WGA-HRP) after ventral root rhizotomy permitted study of the distribution of primary afferents in the spinal cord. The terminal field of these fibers centered around the dorsal cap of Clarke's column and the lateral spinal nucleus, bilaterally. The distribution of WGA-HRP was more restricted than that of LY. A large number of LY-staining fibers were also found ipsilaterally in the medial portion of the intermediomedial column. A smaller amount of LY-staining was present contralaterally in the area of the spinothalamic tract. It is concluded that afferent impulses resulting from mammary stimulation in the milk ejection reflex are probably carried in a mixed spinal nerve whose primary afferent field lies mainly in ipsilateral spinal structures, although there is some evidence for crossing fibers. The data suggest that considerable opportunity exists for interaction with major sensory afferent fiber systems as well as with autonomic fibers. Hence, the spinal path of afferent information relevant for the milk ejection reflex may well be diffuse and it may involve several sensory modalities. PMID- 3841292 TI - Sequence similarity ('homology') searching for molecular biologists. PMID- 3841294 TI - Intrahippocampal injections of antiserum to nerve growth factor inhibit sympathohippocampal sprouting. AB - Following lesions of the fimbria/fornix system in the rat, noradrenergic sympathetic fibers grow into the hippocampal formation. It has been postulated that these fibers collateralize in response to the presence of a neurotrophic substance similar to Nerve Growth Factor (NGF). We tested this by injecting into the rat hippocampus antibody to NGF, or control serum (contralateral control), immediately prior to a bilateral fimbria/fornix transection. In fluorescent histochemical preparations at four to five weeks following surgery, there are fewer large, brightly fluorescent fibers around the injection site on the experimental side when compared with the contralateral control side. These results support the hypothesis that NGF, or an NGF-like substance, plays an important role in the sprouting of sympathetic fibers into the denervated hippocampal formation. PMID- 3841295 TI - Further evaluation of a simple test for determining the integrity of spermatozoal membranes. AB - A simple test of membrane function in spermatozoa has been evaluated by subjecting them to hypo-osmotic stress and determining their swelling characteristics. Correlations between the values from this test and other seminal parameters were poor (r less than 0.42), and after correction for the number of dead spermatozoa present, the relationships became weaker (r less than 0.23). Further investigations with respect to other functional tests of spermatozoal quality (e.g. penetration of homologous and heterologous ova) are warranted before the swelling test is adopted for general routine use. PMID- 3841296 TI - Shapes of benz[a]anthracenes: the crystal and molecular structure of 2 methylbenz[a]anthracene. AB - The crystal structure of 2-methylbenz[a]anthracene (2-MBA), the least carcinogenically active of the monomethylbenz[a]anthracenes, has been determined by application of direct methods to single-crystal X-ray diffractometric data and refined by least squares to R = 0.033 (Rw = 0.035). Deviations of the carbon atoms from the mean molecular plane are much smaller than in the rather more active 1-MBA; in 2-MBA, the benzo-ring A is inclined at about 2 degrees to each of the three rings in the anthracene moiety and even the methyl carbon atom is displaced by only 0.07 A from the ring-carbon atom plane of 2-MBA (and by 0.01 A from the ring-A plane). As in other MBA, the shortest C-C bond in this accurately determined structure is at the K-region (C(5)-C(6) = 1.330(3) A) but three other bonds are short; C(8)-C(9) = 1.347(4), C(10)-C(11) = 1.353(3) and the M-region bond C(3)-C(4) = 1.359(4) A (0.003 A longer if corrected for rigid-body librations). The 2-methyl group appears to take up two orientations with one trio of hydrogen positions more favored than the other. PMID- 3841297 TI - [Hydroxylated metabolites of vitamin D. Therapeutic use of calcitriol and dihydrotachysterol]. PMID- 3841298 TI - Functional radiographs of the craniocervical region and the cervical spine. A new computer-aided technique. AB - Disabilities of the articulations of the head and cervical spine can often be detected only by exact measurement of functional radiographs. From two radiographs, one in flexion and one in extension, not only can the total mobility of the head be measured, but also the mobility of the individual articulations can be evaluated by taking exact measurements of the position of each vertebra. A method for semi-automatic measuring of such pairs of radiographs is presented. Edges and structures of the bones that are clearly visible in both radiographs are digitized on a graphics tablet. Then, by computer program, each vertebra of the first radiograph is shifted and rotated until it fits best to the respective vertebra of the second radiograph. Thus, for each articulation, the mobility angle and the location of the mobility axis relative to the adjacent vertebra, can be computed. First experiences with this method are presented. PMID- 3841299 TI - [Determination of the structure of penberol metabolites. II. Use of deuterated penberol and GC/MS technics]. PMID- 3841300 TI - Isolation of a new toxin, prosurugatoxin, from the toxic Japanese ivory shell, Babylonia japonica. PMID- 3841301 TI - The biological activities of 3,4-O-isopropylidene-3,3'4,5'-tetrahydroxystilbene. PMID- 3841302 TI - Luminol chemiluminescence and peroxidation of unsaturated fatty acid induced by the xanthine oxidase system: effect of oxygen radical scavengers. PMID- 3841303 TI - Surface property changes from interactions of albumin with natural lung surfactant and extracted lung lipids. AB - These experiments characterize the effects of albumin on the dynamic surface activity of natural lung surfactant (LS), and an extracted mixed lipid fraction (CLL), at physiologic temperature, humidity, and film cycling rate on an oscillating bubble apparatus. Measurements of albumin effects on the surface pressure-time (pi-t) adsorption isotherms of CLL and LS are also reported. Results show that albumin in concentrations greater than or equal to 20 mg/ml increased the minimum dynamic surface tension of LS suspensions (0.4 mg phospholipid/ml) from less than 1 dyne/cm to 21 dynes/cm at 37 degrees C. Albumin in low concentrations (2 mg/ml) had a similar detrimental effect on the dynamic surface activity of extracted surfactant lipids, CLL. In addition, albumin also inhibited the isolated adsorption facility of LS and CLL; instead of adsorbing rapidly to their maximum spreading pressures of 45 dynes/cm, both surfactant mixtures (at 0.063 and 0.125 mg phospholipid/ml) adsorbed more slowly or reached lower final surface pressures in the presence of plasma protein. A striking finding was that albumin inhibition of surface activity was moderated or abolished at high lipid concentrations. For example, minimum dynamic surface tensions less than 1 dyne/cm were reached on the oscillating bubble for natural LS at concentrations greater than 0.75 mg/ml and CLL at concentrations greater than 1.5 mg/ml, even in the presence of very large amounts of albumin (100 mg/ml). Similarly, LS and CLL adsorption facility was protected from albumin inhibition at sufficiently high phospholipid concentrations. Albumin inhibition of natural LS adsorption was also moderated by the presence of 1.4 mM Ca2+ ions. These results show that albumin in plasma transudates has the potential to seriously impair alveolar surfactant activity in vivo. However, the detrimental effect will be mitigated if a critical threshold of phospholipid is present. PMID- 3841304 TI - Congenital adrenal hyperplasia due to deficient cholesterol side-chain cleavage activity (20, 22-desmolase) in a patient treated for 18 years. AB - Two siblings, a 9-week-old female and an 18-year-old male pseudohermaphrodite are described with deficient cholesterol side-chain cleavage activity. The female died untreated in 1954; the second sibling, a phenotypically female infant with 46 XY karyotype, was diagnosed at age 5 weeks. Massive adrenal hyperplasia was revealed by intravenous pyelography showing downward displacement of the kidneys. Secretion rates of cortisol, aldosterone, deoxycorticosterone and corticosterone were unmeasurable. Urinary 17-hydroxycorticosteroids (17-OHCS), tetrahydrocortisol, 17-ketosteroids (17-KS), pregnanetriol, pregnanediol, and delta 5-3 beta-ol steroids were not detected during prolonged administration of ACTH. Plasma concentrations and urinary excretion of gonadotrophins were increased. Gonadal mitochondria did not convert radiolabelled cholesterol to pregnenolone. The gluccocorticoid and mineralocorticoid deficiencies have been controlled well by steroid replacement therapy. Plasma ACTH concentrations and plasma renin activity remained strikingly elevated even when supraphysiologic doses of glucocorticoids and mineralocorticoids were given. Oestrogen replacement alone induced a pubertal growth spurt. The differential diagnosis, the effects of long-term steroid replacement therapy, and comparison with previously reported findings are discussed. PMID- 3841305 TI - Antithyroglobulin monoclonal and autoantibodies cross-react with an orbital connective tissue membrane antigen: a possible mechanism for the association of ophthalmopathy with autoimmune thyroid disorders. AB - The possibility that Graves' ophthalmopathy and autoimmune thyroid disorders may be associated because of autoimmune reactions against antigens shared between human orbital and thyroid tissues was investigated using anti-thyroglobulin (Tg) monoclonal and autoantibodies. Eleven of 16 mouse monoclonal antibodies (MCAB) tested reacted, in an enzyme-linked immunosorbent assay (ELISA), with an antigen in human orbital connective tissue membranes (OCTmem), but not with the OCT soluble fraction, or with membrane or soluble fractions of human eye muscle, lacrimal gland or skin connective tissue. The anti-OCTmem activity was absorbed by OCTmem and Tg, but not by liver membranes or bovine serum albumin (BSA). In preliminary studies four out of 113 human MCAB against thyroid or orbital tissue antigens showed reactivity restricted to Tg and OCTmem. Sera from approximately 50% of patients with autoimmune thyroid disorders, with or without ophthalmopathy, also reacted with OCTmem. The autoantibody activity correlated closely with serum titres of antithyroglobulin but not with the presence, duration, or severity of the eye disease. The OCTmem reactivity was absorbed by Tg, thyroid membranes, and OCTmem but not liver membranes, membranes prepared from other orbital tissues, or BSA. The OCTmem-Tg shared antigen site appeared not to be native thyroglobulin since, (i) MCAB and serum autoantibodies did not react with the cytosol fraction of OCT, and (ii) because the membrane antigen was not solubilizable. Because not all patients with ophthalmopathy have detectable anti-Tg antibodies and, conversely, because not all patients with detectable anti Tg antibodies develop ophthalmopathy it is unlikely that autoimmunity against a OCTmem-Tg shared antigen is the primary mechanism of Graves' ophthalmopathy, although this possibility has not been excluded. On the other hand the reaction of anti-Tg autoantibodies with OCT membranes may be a model for other autoimmune reactions against other thyroid-orbital tissue-shared antigens. While the pathogenesis of Graves' ophthalmopathy is likely to be multifactorial, humoral and cellular reactions against primary orbital antigens, thyroid-orbitol tissue shared antigens, or both, are likely to play important roles. PMID- 3841306 TI - Sexually transmitted diseases: a pilot education programme in Queensland. PMID- 3841307 TI - A comparison of the major surfactant-associated proteins in different species. AB - We examined the major surfactant-associated proteins in a number of species by using two-dimensional gel electrophoresis, protein blotting and immunostaining. All species have a 30,000 to 35,000 mol. wt protein group consisting of multiple isoforms with isoelectric points ranging from pH 4.4 to 5.6. The techniques used in this study have resolved three component subgroups within the 35 K group. A group of proteins at 60,000-65,000 mol. wt has also been consistently identified. We conclude that remarkable similarity exists among the major surfactant associated proteins from various mammals with regard to isoelectric points, molecular weights and antigenic sites. PMID- 3841309 TI - [Tennis elbow. Treatment of disabling forms by ablation of the humeroradial meniscus]. PMID- 3841308 TI - Effects of anordrin and its analogue on antifertility. AB - Anordrin has been used as an effective postcoital contraceptive in China. The mechanism of anordrin and its analogue SIPPR-113 on antifertility has been studied. Anordrin and SIPPR-113 possessed estrogenicities and induced decrease in serum progesterone levels in rats. Their antiprogesterone activities might be mainly caused by their estrogenicities, which were the main but not the only contributors for the antifertility. The direct effects of anordrin and SIPPR-113 on human trophoblast cells were studied. A concentration of 50 micrograms/ml or 100 micrograms/ml of anordrin or SIPPR-113 could injure the human trophoblast cells in vitro. The uterine Pontamine blue reaction of mated rats was inhibited in those treated with anordrin or SIPPR-113 at the dose of 4 mg/kg. Anordrin, SIPPR-113 or AF-45 was given orally, intramuscularly and intravenously. The effects of drugs administered via the three routes were nearly the same. This study further demonstrated that anordrin was hydrolyzed to break its bond of dipropionate and was transformed into its parent steroid AF-45 to exert its antifertility effects in vivo. This study warrants that anordrin should been evaluated further. PMID- 3841310 TI - [Changes in circulatory prostacyclin in diabetics]. PMID- 3841311 TI - [Thiamine diphosphate absorption by the cells of Pliss lymphosarcoma and Ehrlich ascitic cancer]. AB - Concentration difference of vitamin B1 coenzyme in blood and in ascitic fluid was found in mice with the Ehrlich ascites tumour. The thiamine diphosphate deficiency was detected in the liver of rats with the Pliss lymphosarcoma. The introduction of cocarboxylase to animals was accompanied by the active absorption of this coenzyme by tumours. It is observed that experimental tumours disturb the vitamin B1 balance in the organism. PMID- 3841312 TI - [Heterogeneity of L-line cells in the early stages of clone development]. AB - The clonal study of L cell culture has shown that the clone-forming cells are heterogeneous both in form and in the activities of enzymes (succinate dehydrogenase, lactate dehydrogenase, NAD- and NADP-diaphorase) which were determined by histochemical methods. The morphological heterogeneity is characteristic for clones with not less than 10 cells manifesting itself earlier and heterogeneity as to the activity of the studied enzymes--later, in clones with more than 15-20 cells. PMID- 3841314 TI - Epidemiology for and with a distrustful community. AB - The epidemiology of diseases associated with chemical waste disposal sites has often been delayed for years after the affected community became aware of the exposure. Frequently, this has resulted in an aroused neighborhood community that is distrustful of those public agencies and officials responsible for protecting their health. It is thus important that positive steps be taken to alleviate the antagonism and to involve the community in an active and constructive role in the epidemiology study. This paper presents a case history of such an incident and highlights some of the lessons learned. The first steps were to involve and inform the community. A citizen and industry advisory committee was formed to participate in the work, publish a newsletter, and conduct regular community meetings. The newsletter and the community meetings were used to identify problems and to explain them; to describe uncertainties of a scientific as well as of political or financial nature; to involve community leaders, including those distrustful; to conduct an epidemiologic census and a neighborhood environmental exposure survey. The end results were a defusing of the antagonism toward authorities, complete acceptance by the community of the merit of the report, a higher quality of report than might otherwise have been possible, and the freedom to move toward alleviating the problems of the disposal site. PMID- 3841313 TI - Nitropyrene: DNA binding and adduct formation in respiratory tissues. AB - Binding of 1-nitro (14C)pyrene (NP) or its metabolites to cellular DNA and protein in cultures of rabbit alveolar macrophages, lung tissue, and tracheal tissue was examined. DNA binding in tracheal tissue (136 +/- 18.3 pmole NP/mg DNA) was four to five times the levels measured in either lung tissue (38 +/- 9.4 pmole NP/mg DNA) or macrophages (26 +/- 7.5 pmole NP/mg DNA). Adduct analysis of DNA isolated from lung tissue incubated with 1-nitro[H3]pyrene in vitro resulted in the identification of 2 to 5% of the NP adducts as C8-deoxyguanosine 1 aminopyrene. NP was also bound to cellular protein in tracheal tissue and lung tissue, and at a lower level in macrophages. Cocultivation of the macrophages with lung and tracheal tissue decreased the DNA binding in tracheal tissue by 45%. Following intratracheal instillation of diesel particles (5 mg) vapor-coated with 14C-NP (380 ppm, 0.085 muCi/mg) particles into rats, 5-8% of the radioactivity remained in the lungs after 20 hr. Most of the diesel particles were also deposited in the lung. Examination of DNA and protein binding in this tissue showed 5 to 12% of the pulmonary 14C bound to protein and no detectable levels of 14C bound to DNA. PMID- 3841316 TI - Antinociceptive effects of intrathecally injected cholinomimetic drugs in the rat and cat. AB - Rats chronically implanted with intrathecal catheters displayed a dose-dependent increase in the hot-plate, tail-flick response latencies, and decreased the magnitude of the writhing response following the injection of certain cholinomimetics into the subarachnoid space through the indwelling catheter. The structure-activity relationship for these agents is oxotremorine greater than carbachol greater than acetylcholine + physostigmine much much greater than acetylcholine = nicotine-HCl = 0. Atropine, but not naloxone, strychnine, picrotoxin, curare or methysergide and phentolamine, reversed the antinociceptive effect. This suggests the involvement of muscarinic cholinergic mechanisms. Experiments with intrathecal injection of carbachol into the spinal subarachnoid space of cats fitted with intrathecal catheters also revealed a potent antinociceptive effect which was completely antagonized by atropine. The effect was somatotopically limited with the skin surfaces innervated by cord segments nearest the catheter tip showing the most significant effect with the shortest latency of onset. This observation, together with the absence of changes in general reflex motor function or postural control further indicated a selective spinal effectiveness of muscarinic agonists after low dose intrathecal administration. PMID- 3841315 TI - Intrathecal morphine in cardiac surgery. AB - The effects of intrathecal morphine in 60 patients undergoing open-heart surgery were studied in an observer-blind control trial. The patients were randomly allocated into three groups of 20 each: (A) Control, (B) 2 mg and (C) 4 mg of intrathecal morphine. This study confirms that intrathecal morphine provides useful post-operative analgesia. Patients given intrathecal morphine required less postoperative analgesia and sedation and their respiratory function tests were less depressed than the control group. Since the completion of this study, reports have suggested that 1 mg of morphine intrathecally avoids the serious complications of respiratory depression. In the study described, the patients were electively ventilated post-operatively and respiratory depression was therefore not a problem. Of the other associated side-effects of intrathecal morphine, vomiting (20%) and pruritus (20%) proved the most troublesome. PMID- 3841318 TI - Structure-activity relations of conotoxins at the neuromuscular junction. AB - The anticholinergic actions of synthetic conotoxin GI analogues and their structure-activity relationships were studied. Conotoxins competitively blocked the nicotinic acetylcholine receptors in neuromuscular junctions of preparations of rat sciatic nerve, M. gastrocnemius and frog abdominal muscles. They did not have a ganglion-blocking action, at least in the parasympathetic ganglion, or an anti-muscarinic action. The pA2 values of the synthetic conotoxin analogues indicated that the major factors determining the activity of conotoxin are the structural conformation of the peptide defined by two disulfide bridges, and the presence of a proline residue and C-terminal amide. PMID- 3841317 TI - Antihistaminic properties of AF-14, an experimental quinuclidine derivative: discrimination between two histaminergic sites in both guinea-pig ileum and bladder. AB - AF-14 (1-aza-4-phenyltricyclo[6.2.2.0(2,7)]dodecan-5-one), a selective antimuscarinic agent, was shown to block the histamine-induced contractile response in Krebs solution in guinea-pig ileum and bladder. Careful linear regression analyses of the concentration-response relationship revealed that AF 14 antagonism consisted of two sequential and distinct phases, corresponding to an early phase and a late phase of the contractile response to histamine. In the late phase, the action of AF-14 was consistent with competitive antagonism, its pA2 (95% confidence limits) being 5.80-6.06 (ileum) and 5.66-5.80 (bladder). In the early phase, AF-14 almost completely blocked the contractile response at a concentration of 100-300 nM, which was much less than required to block the late phase or cholinergic contractions of the ileum or bladder. It is concluded that AF-14 discriminates between two histamine-sensitive sites that mediate muscle contraction in each of the two organs. PMID- 3841319 TI - Retinal damage in hatched chicks induced by formoguanamine. Decrease in ornithine aminotransferase activity and vitamin B6 content. AB - Subcutaneous injection of formoguanamine (2,4-diamino-s-triazine) induced sightlessness in newly hatched chicks within 28-32 hr. The specific activity of retinal ornithine aminotransferase, localized exclusively in the mitochondria of retinal pigment epithelium, and the retinal vitamin B6 content decreased rapidly after formoguanamine administration. An absorption spectrum of retinal extract showed reduced absorbance at 400 nm in the formoguanamine-treated chicks, but delta 1-pyrroline-5-carboxylate reductase, an enzyme in the retinal cytosol, did not change significantly. A drug-metabolizing enzyme, glutathione transferase, showed an increase in specific activity during a later phase. Histological examination of the formoguanamine-treated chicks revealed characteristic degeneration of pigment epithelium and photoreceptors, acute retinal detachment and a secondary gliosis in the outer nuclear layer. From these findings it may be concluded that formoguanamine primarily damages the physiological functions of retinal pigment epithelium and photoreceptors and results in irreversible retinal detachment in newly hatched chicks. PMID- 3841320 TI - Isolation technique and identification of epithelial cells from efferent ductules of the rat epididymis. AB - A method has been developed for isolation of cells from the efferent ductules of the rat epididymis to obtain a population of epithelial cells. The technique depends on a transfer of segments of the ductules into a new isolation medium and gradual purification from fat cells, fibroblasts, collagen fibres and smooth muscle cells. Segments of the ductules so isolated were further separated into single cells or their aggregates. The mode of isolation applied allowed to obtain morphologically unchanged and functionally fully efficient cells. When transferred to culture they rapidly formed a single layer and further developed into a multi-layer culture. The cells divide and preserve their ability of producing secretion. They react to the absence of androgenous hormones by a considerable depression of the number of mitotic divisions and reduction of their secretion. PMID- 3841321 TI - A model for the function and failure of the meniscus. PMID- 3841322 TI - [Paralytic ileus in delirium tremens]. PMID- 3841323 TI - Remarkable improvement of clinical status in a patient with multiple lymphomatous polyposis of the gastrointestinal tract after repetitive chemotherapy. AB - The effect of repeated courses of chemotherapy on gastrointestinal tumors seen in a 43 year-old male patient with multiple lymphomatous polyposis involving the entire gastrointestinal tract was presented. Numerous polypoid lesions from the stomach to the rectum were the characteristic finding in this case. The biopsied specimens from polyps either of the stomach or large intestine showed diffuse lymphocytic accumulation in the submucosa, which is consistent with multiple lymphomatous polyposis of the gastrointestinal tract. Remarkable regression of the large masses in the gastrointestinal tract was obtained by two courses of VEMP therapy, along with improvement of hypoalbuminemia and a positive CRP. Recurrence of gastrointestinal masses in the cecum and rectum was also eliminated by six courses of CHOP therapy, and a total of nine courses of CHOP therapy led to complete disappearance of masses in the gastrointestinal tract. The present case is different from the others in terms of the following viewpoints that first the ensuing large masses favorably responded to repetitive chemotherapy, secondly the histopathological findings remained benign despite the fact that large nodular masses had recurred in the cecum and rectum, and thirdly the pathological changes were still confined to the gastrointestinal tract without developing systemic malignant manifestations. PMID- 3841324 TI - [Retardation problems within the scope of prematurity]. AB - Among 804 short-weight infants (birth weight less than 2500 g) born at the Department of Obstetrics and Gynaecology, Medical School, Friedrich-Schiller University, Jena, from 1. 1. 1978 to 31. 12. 1981, one-third were small for gestational age babies. These hypotrophic infants showed, in relation to premature infants (appropriate for gestational age) a higher prenatal and intranatal mortality (statistically not significant). A frequent severe foetal distress mainly on the background of chronic or subacute placental insufficiency implied a higher rate of obstetrical operations by the hypotrophic infants. This was particularly evident by the incidence of caesarean sections (24.7% : 15.2% respectively). The premature hypotrophic infants had the highest caesarean section incidence, amounting to 30.3%. Postnatal adaptation proved more favourable with the small for gestational age babies than with the premature group. There was in fact a statistically significantly lower rate of asphyxiated infants detectable by means of APGAR-score less than or equal to 7 five minutes after labour and a lower neonatal and late mortality in spite of "acidotic morbidity", which was statistically significantly higher in the group of small for date infants (p less than 0.05). We consider as possible cause a higher average duration of gestation with approximately average birth weights. The difference in the clinical behaviour between the premature-hypotrophic and hypotrophic infants were smaller than between the premature-eutrophic and hypotrophic infants. This contradictory behaviour before, during and after labour requires the specialist to be capable of meeting the diagnostic and therapeutical requirements in every respect. PMID- 3841325 TI - Action of different agonists and antagonists of the cholinergic system on the rat lower esophageal sphincter. AB - Several compounds acting on the cholinergic system at different levels were tested for their stimulatory or inhibitory effects on the isolated lower esophageal sphincter (LES) of the rat. Results obtained with acetylcholine, bethanechol and compound McN-A343 on the one hand and atropine, pirenzepine, ganglion blocking agents and tetrodotoxin on the other, suggested that LES contraction was associated mainly with the stimulation of post-synaptic muscarinic receptors. Nicotinic receptors (both ganglionic and muscular) seem to have a minor role, if any. PMID- 3841326 TI - Changes in DNA capacity for actinomycin-D binding in nuclei of interphase cells. AB - 3H-AMD binding to DNA in interphase nuclei was tested on asynchronous and synchronous LS/BL cell populations under physiological conditions and after exposure to gamma rays (60Co). 3H-AMD binding to DNA in an asynchronous cell population appeared to be nearly constant and independent of 3H-AMD concentration. However, in comparing individual cells, a great variability could be observed. In synchronized cells the DNA accessibility for 3H-AMD binding changed in the course of the cell cycle, with a maximum occurring at the late G1 phase (13.95 X 10(-12) mumol/nucleus) and a minimum at the late G2-phase (2.63 X 10(-12) mumol/nucleus). In irradiated cells the DNA capacity for 3H-AMD binding was growing with the increasing dose (5-80 Gy) from 4.9 to 11.2 X 10(-12) mumol 3H-AMD/nucleus. PMID- 3841327 TI - A new model for the resolution of cultural and biological inheritance in the presence of temporal trends: application to systolic blood pressure. AB - A contemporary path model for the resolution of cultural and biological inheritance is extended to incorporate temporal variation in family resemblance. Specifically, the genetic and environmental effects, like all other parameters of the model, are allowed to vary over an individual's age according to some specific mathematical functions. In the computer program BETREND a library of such functions is incorporated. Data on systolic blood pressure in 542 Japanese American nuclear families were analyzed. This new methodology detected significant temporal variation in cultural inheritance, a result that was not found previously by using static models which could only distinguish between adult and childhood heritabilities. Cultural heritability, estimated to be 10% at birth, increases to a maximum of 28% at age 36, at which time it declines until it eventually reaches 10% at age 49. Although not statistically significant, there was some evidence for temporal trends in genetic heritability as well. Ignoring trends, the genetic heritability was estimated as .30. On the other hand, trends in sibling environment were clearly nonsignificant. This model provides an objective method of testing the significance of temporal trends in familial resemblance by using multifactorial models, of resolving varying gene expression and transient environmental effects as possible sources of generating the observed temporal variation, and of estimating continuous changes in heritability with age. PMID- 3841328 TI - [Experience in using the Elektronika MK-54 computer for processing the results of toxicology research]. PMID- 3841329 TI - Interaction of diet and photoperiod on growth and reproduction in male golden hamsters. AB - Two basic diets (commercial rodent pellets or seeds) with or without supplements of carbohydrate were tested for growth and development, and effects on organ weights and serum calcium in male golden hamsters. The additional influence of photoperiod was measured. The data suggest that a seed diet alone is not adequate for growth. Addition of seeds and/or carbohydrate to the pellet diet increases growth rates substantially compared to the pellet diet alone. There are significant interaction effects on reproduction between diet and photoperiod indicating that diet can modify responses to short photic input. While reproduction remains essentially normal in seed-fed animals in long photoperiods, the rate of reproductive involution in short photoperiods is greatly enhanced. Added carbohydrate appears to offer some protection against the adverse effect of short photoperiods on reproduction. Even though calcium supplements to the diet increase serum calcium levels toward normal, growth rates are not improved. Addition of Tenebrio (grain beetle) larvae to the seed diet induces growth rates comparable to those of control animals, yet serum calcium levels remain significantly lower. PMID- 3841331 TI - Amniotic fluid embolism in Sweden, 1951-1980. AB - Amniotic fluid embolism is one of the least frequent complications of parturition, but the most dangerous of all. 38 cases of fatal amniotic fluid embolism were diagnosed in Sweden during the years 1951-1980, i.e. 1 case for every 83,000 live births. The proportion of amniotic fluid embolism in maternal mortality as a whole increased from 1.2 to 16.5% during this period. Predisposing factors identified were gemini/polydyramnios, abruptio placentae, hypertonic labor, rupture of the birth canal, macrosomia, and obstetrical interventions such as administration of oxytocin and fundal pressure. The main symptoms were cardiovascular shock with right heart strain, and hemorrhage with pathologic proteolysis. Four cases of presumed amniotic fluid embolism with survival of the patient were diagnosed during the years 1972-1980--a case fatality rate of 66% (4/12). PMID- 3841330 TI - Is raised plasma peptide YY after intestinal resection in the rat responsible for the trophic response? AB - The relationship between the adaptive response and plasma PYY concentrations after small bowel resection has been investigated. Seventy five per cent proximal small bowel resection resulted in a rise in plasma PYY at six days from 28 +/- 3.1 to 85 +/- 12.3 pmol/l (p less than 0.001) and this difference was maintained to 48 days. Plasma PYY correlates both with crypt cell production rate (CCPR) in the ileum and with plasma enteroglucagon levels. In a second study, PYY or saline was infused over a 12 day period. There were no significant changes in intestinal wet weight or CCPR in any part of the bowel studied. This indicates that it is unlikely that PYY exerts a major trophic effect on the gastrointestinal tract. PMID- 3841332 TI - [The antiinflammatory effect of budesonide]. AB - The systemic and topical antiinflammatory activities of budesonide (B) were studied in rats and mice and compared with those of commercially available steroids. Betamethasone 17-valerate (BV) was used as the main reference compound, and fluosinolone acetonide (FA), hydrocortisone 17-butyrate (HB) and hydrocortisone 21-acetate (HA) were also used. B given systemically had stronger antiinflammatory effect than BV on carrageenin edema, cotton pellet granuloma, adjuvant arthritis, croton oil edema, PCA reaction, Arthus reaction, contact hypersensitivity and histamine or serotonin skin reaction. The potency of antiinflammatory activity of the 5 compounds in carrageenin edema, croton oil edema and contact hypersensitivity tests was in the order of FA, B, BV, HB and HA. B given locally also produced stronger antiinflammatory effects than BV on carrageenin edema, cotton pellet granuloma, croton oil edema and contact hypersensitivity. The order of potency of the 5 compounds in carrageenin edema, croton oil edema and contact hypersensitivity tests was the same as by systemic application. In general, the ratio of the dose required to cause atrophy of the thymus and adrenals to the dose required to produce the antiinflammatory effect was the greatest with B by both systemic and local application. The results suggest that B has a stronger antiinflammatory activity with fewer systemic side effects than conventional steroid compounds. PMID- 3841333 TI - MOPP chemotherapy plus irradiation for Hodgkin's disease, stages IA to IIIB. Long term results of the prospective trial H72 (1972-1976, 334 patients). AB - From April 1972 to December 1976, 334 patients with Hodgkin's disease, CS IA IIIB, were prospectively treated with combined chemotherapy and radiation. The 166 stages IA and II2A were clinically staged only; the 168 other patients were randomized to clinical or pathological staging. All patients received 3 or 6 cycles of MOPP followed by Mantle field with or without mediastinal irradiation and/or inverted Y or lumbo-aortic field according to initial stage, presentation and protocol. At completion of therapy, 317 patients were in complete remission. Twenty-six patients relapsed and 43 died including 5 with leukemia and 6 with infection. Overall 12-year survival and relapse-free rates are 86.6 +/- 3.08 per cent and 91.5 +/- 3.2 per cent respectively (IA: 95.3 and 95.3 per cent; IIA: 87.8 and 92.1 per cent; IIIA: 83.3 and 100 per cent; IB, IIB: 81.7 and 89.2 per cent; IIIB: 67.8 and 73.7 per cent). The randomized comparison between clinical staging plus 6 cycles of MOPP and laparotomy staging plus 3 cycles of MOPP in final stage II3+A, IB, IIB patients showed no significant 12-year survival differences (90.8 versus 85.6 per cent). With this combined modality treatment policy, high survival rates are obtained using only 3 cycles of MOPP and radiotherapy in CS IA, II2A and in PS II3+, IB, IIB. Laparotomy staging may be unnecessary if 6 cycles of MOPP are employed before irradiation in CS IIA, IB, IIB disease and if 3 cycles of MOPP are followed by irradiation in CSIA and II2A disease. Mediastinal irradiation can be avoided in patients with supradiaphragmatic disease without mediastinal involvement. PMID- 3841334 TI - Genital herpes: an increasing problem? AB - Over the past 10 years there has been a pronounced increase in the number of cases of genital herpes seen in sexually transmitted disease (STD) clinics in the United Kingdom. The reporting system, however, does not differentiate between primary and recurrent infections, and consequently any increase in the number of patients reattending clinics with recurrent genital herpes would falsely inflate the statistics. A study of cases of herpes seen in the department of genitourinary medicine of this hospital in the two years 1972 and 1982 is presented. It showed that the proportion of patients attending with recurrent herpes had increased from 18% in 1972 to 31% in 1982. As a result of this, the 68% increase between 1972 and 1982 in the total number of cases of herpes seen in the clinic overestimates the real increase in the size of the problem, which is closer to 40%, based upon cases of primary herpes only. Modifications to the national recording system are necessary to overcome the problems highlighted by this study. These modifications could include classifying each case of genital herpes as primary, recurrent, or recurrent but not previously recorded, which would provide a more accurate picture of the size of the problem of genital herpes in the population. PMID- 3841336 TI - Sexually transmitted diseases in Botswana. PMID- 3841335 TI - Pattern of sexually transmitted disease in Madurai, India. AB - The pattern of sexually transmitted disease (STD) in a public clinic in Madurai City, India, was studied for 10 years (1974-83). Syphilis was found to be the most common STD in men (28.3%) and trichomoniasis in women (39.6%). The tropical STDs (chancroid, lymphogranuloma venereum, and granuloma inguinale) formed a sizeable proportion (30.1%) of all STDs. A tendency to overdiagnose chancroid and lymphogranuloma venereum and a failure to detect many cases of gonorrhoea reflected a lack of laboratory facilities. PMID- 3841337 TI - Induced non-puerperal lactation. PMID- 3841338 TI - TOPPER, a software package in FORTRAN for scaling studies. AB - Scaling studies are concerned with the differences in structure, function, behaviour and life-history associated with differences in size in broadly similar organisms. These studies make extensive use of bivariate regression analysis. Often it is of interest to carry out such analyses on many different subpopulations within a given sample population. The programs described here allow these analyses to be carried out efficiently. The output gives a summary of taxonomic parameters in addition to the usual statistical parameters, such as standard deviations and mean percent deviation. Some improvements in the software which are currently being implemented are discussed briefly. PMID- 3841339 TI - Pharmacokinetic lag time estimation. AB - This note draws attention to a problem encountered when using the pharmacokinetic computer program CSTRIP for lag time estimation. The problem arises because data belonging to the lag phase is used for polyexponential parameter estimation. Simulated data are used to illustrate the effect on the fitted curve. A new curve stripping program JANA is shown to be free of this flaw. PMID- 3841340 TI - A computer program for the analysis of serial electrocardiograms from patients who suffered a myocardial infarction. AB - A program is described, which compares serial ECG recordings of patients, who suffered a myocardial infarction. The comparison of the ECGs is based on the measurements, delivered by the Modular ECG/VCG Interpretation System. The two most recent ECGs are compared and a trend analysis based on all ECG recordings of the patient is performed. The criteria in the comparison program are based, among others, on data obtained from a combined cardiological and respiratory survey in The Netherlands in 1973 and 1976. PMID- 3841341 TI - The therapeutic applications of computerised games. AB - Microcomputers have great potential in therapeutic environments, but, if they are to achieve this potential, they need appropriate software (programs). This paper examines the ideas behind games software and the relevance of commercially available software to therapy. It recommends that specially designed programs are needed and lays down some guidelines for the design and development of such software. PMID- 3841342 TI - Comparison of the effects of argon fluoride (ArF) and krypton fluoride (KrF) excimer lasers on ocular structures. AB - We evaluated the effects of argon fluoride (ArF) and krypton fluoride (KrF) excimer lasers on ocular structures. We produced corneal incisions, optical iridotomy, capsulotomy, and retinotomy with these lasers. Incisions produced with ArF showed sharply defined borders with minimal coagulative effects to the adjacent structures. Cuts created with KrF showed coagulative necrosis of the wound edges ranging from two to five um in width. From our study it appears that ArF has photoablative action and KrF has a predominantly photoablative action with minimal photocoagulative effect on the tissue. PMID- 3841343 TI - Meniscectomy in children. Evaluation of results after growth has ceased. AB - The results of 28 total meniscectomies in children were reviewed after the end of the growth period. From a purely clinical point of view these were satisfactory in 26 cases and in the remaining 2 cases the poor results were due to faulty initial diagnosis. From the radiographic survey, 50% of cases showed early signs of degenerative arthritis in the femorotibial joint, but there was no evidence of the patellar syndrome. In meniscal lesions in children, the surgical approach should therefore be as conservative as possible. PMID- 3841344 TI - An example of Hb Christchurch in Japan. Identification by high-performance liquid chromatography. PMID- 3841345 TI - Hb Bushwick, an unstable hemoglobin with tendency to lose heme. PMID- 3841346 TI - Hb G-Szuhu or alpha 2 beta 2(80)(EF4)Asn----Lys, in combination with beta zero thalassemia in a Spanish family. PMID- 3841347 TI - Muscarinic acetylcholine receptors in rat gastric mucosa. A radioautographic study using a potent muscarinic antagonist, 3H-pirenzepine. AB - The muscarinic cholinergic innervation of the rat gastric mucosa was investigated by localizing the muscarinic receptors using a tritiated muscarinic antagonist, pirenzepine. Radioautography was performed by freeze drying stomach tissue, which was then embedded in Epon and wet sectioned with ethylene glycol, and dry mounting on emulsion film by the wire-loop method to prevent loss of the labelled substance during fixation and the radioautographic procedure. Light and electron microscopy showed that the specific pirenzepine-binding sites were localized predominantly on parietal cells, chief cells and perivascular plexuses. Analysis of the grain distribution on parietal cells revealed that the silver grains corresponding to the pirenzepine-binding sites were mainly on the basolateral plasma membrane. On the other hand, the surface mucous or mucous neck cells had few pirenzepine-binding sites. PMID- 3841348 TI - Retrograde tracing of neural pathways with a protein gold complex. II. Electron microscopic demonstration of projections and collaterals. AB - This paper describes a sensitive method for tracing neural connections at the electron microscopic (EM) level using a new compound produced through the coupling of colloidal gold particles to a wheat germ agglutinin horseradish peroxidase conjugate (the WGA*HRP-gold complex). Visualization of retrogradely labeled cells at the EM level was achieved either directly by gold particles scanning or after silver enhancement. By using different sizes of gold particles individually coupled to WGA*HRP and injected in different brain areas EM detection of multiple retrograde labeling was possible. Thus retrogradely labeled cells were first identified at the light microscopic level through HRP histochemistry with tetramethylbenzidine as a chromogen and then examined under the electron microscope after osmication and embedding. Gold particles were readily identified as electron dense, round dots in spherical grey vesicles. Identification of different sizes of gold particles often localized in the same vesicle established that the protein-gold complex can be used to study collateralisation of parental axons. PMID- 3841349 TI - An epithelial scatter factor released by embryo fibroblasts. AB - Medium conditioned by human embryo fibroblasts breaks structural junctions between several types of epithelial cells, leading to separation and scattering of the cells. An assay developed in MDCK cells shows activity up to a dilution of at least 1 in 64, equivalent to less than 100 ng of total protein. The activity is non-dialysable, heat-labile, and sensitive to trypsin, and it is assumed to be due to one or more proteins. After addition of the factor, separation of MDCK cells begins in about 15 min and is complete in 10 h. It increases migration of MDCK cells into wounds, and causes collapse of domes. Locomotion of isolated cells is not enhanced, but cell shape is affected by local membrane movement. Under the culture conditions used the factor, or an associated protein, causes a weak inhibition of cell growth without cytotoxic activity. The scattering factor has not been purified, nor has a physiological role been identified, but it might be concerned in the mobilization of epithelial cells. PMID- 3841350 TI - Chloroquine metabolism in man: urinary excretion of 7-chloro-4-hydroxyquinoline and 7-chloro-4-aminoquinoline metabolites. PMID- 3841351 TI - Decapreno-beta-carotene as an internal standard for the quantification of the hydrocarbon carotenoids by high-performance liquid chromatography. AB - The application of decapreno-beta-carotene as an internal standard in quantification of the hydrocarbon carotenoids extracted from raw carrots has been thoroughly examined. Decapreno-beta-carotene is a C50 beta-carotene that has most of the requirements of an internal standard and it can be commercially synthesized in high purity. An isocratic high-performance liquid chromatographic (HPLC) system has been developed that separated all-trans-alpha-carotene, all trans-beta-carotene, and its 15,15'-cis-isomer from this internal standard. Quantitative determination of the hydrocarbon carotenoids in carrots by HPLC using the internal standard technique gave values for alpha- and beta-carotene similar to those obtained from alpha- and beta-carotene standards alone. PMID- 3841352 TI - Microcomputer programming in basic for the evaluation of capillary gas chromatography in the analysis of pesticide residues. I. MATRIXCOMP--a program that facilitates the recognition of interfering peaks from the biological matrix. AB - Chromatograms of pesticide residues in food include peaks produced by pesticides and matrix compounds. Pesticide peaks are recognized by means of relative retention times and response factors; two detectors are used and internal standard methods are applied. Chromatograms of reference samples for all types of food are stored as raw data in a reduced format, together with tables of all chromatographic data for the matrix compounds. MATRIXCOMP provides the analyst with the chromatograms of the actual sample and the reference in parallel on a visual display screen for visual comparison. Simultaneously, the relevant chromatographic data for the sample, the reference and the calibration tables are displayed on a second screen page in a condensed form. PMID- 3841353 TI - Landmarks in computer-assisted psychological assessment. PMID- 3841354 TI - Direct patient computer interviewing. PMID- 3841355 TI - Adaptive testing by computer. PMID- 3841356 TI - Automated interpretation of neuropsychological test data. PMID- 3841357 TI - Current developments and future directions in computerized personality assessment. PMID- 3841358 TI - [Statistical analysis of visual fields by the automatic perimeter Octopus 2000 R with the Delta program]. AB - The difference tables gives, on a numeric table, the difference between first and second examination. The confidence interval is given out by a statistical test (T test) which can be applied to the following parts of visual field: pathological area, whole field. We present a number of visual field examinations (Program 33) from glaucomatous patients, analysed through "change mode". We can make the following remarks: When we assess an improvement, it is underlined in "Delta Program", which indicates: significant improvement. When the visual field is unchanged, "Delta Program" indicates a fluctuation: aggravation or improvement (almost always insignificant). A subjective alteration is always underlined by "Delta Program". The program allows an objective interpretation and, when it is combined with the usual objective interpretation, makes the evaluation of campimetric deficiency easier. The importance of statistical analysis, besides the fact that it associates the visual field to one or several mean values, is to set it off as exactly as possible. Flammer and coll. (1985) propose a new index: "corrected loss variation". PMID- 3841359 TI - Dystocia due to osteomalacia. PMID- 3841360 TI - From idea to implementation: cognitive software for students with learning disabilities. PMID- 3841361 TI - Extracorporeal membrane oxygenation and congenital diaphragmatic hernia: modification of the pulmonary vasoactive profile. AB - We studied the vasoactive profile of a term infant with congenital diaphragmatic hernia and intractable pulmonary hypertension who was refractory to conventional medical management despite an early stable period. Plasma prostanoid vasoconstrictor thromboxane A2 (TxB2) levels were elevated prior to ECMO at 150pg/mL, rose to 310pg/mL with the first hour of bypass and remained elevated until 72 hours by which time they fell to less than 50pg/mL. This coincided with the decreased extracorporeal circulatory support needed to maintain systemic arterial pO2 between 70 to 90 torr. Pulmonary vasodilator prostacyclin (6-keto PGF1 alpha) was minimally elevated prior to bypass a 50pg/mL and became undetectable. Catecholamine levels were markedly elevated prior to ECMO at 4,000pg/mL with no demonstrable pulmonary extraction of norepinephrine. Though catecholamine levels remained nonspecifically elevated, pulmonary metabolism of norepinephrine improved with bypass time to 48% at 96 hours and coincided with the overall improvement of the infant's respiratory function. These data suggest pulmonary hypertension associated with congenital diaphragmatic hernia is at least partially precipitated by alterations in prostanoid homeostasis as selective activation of thromboxane synthetase pathways rather than nonspecific activation of the entire archidonate cascade. While ECMO per se may have no lasting effect on prostanoid homeostasis, ECMO can allow a period of cardiopulmonary rest during which more physiologic prostanoid levels are established. Although activation of the sympatho-adrenal axis may contribute to pulmonary hypertension, the role of catecholamines in this infant is not clear. Return of the lungs ability to clear norepinephrine may be an additional marker of biologic lung recovery. PMID- 3841362 TI - Sympathomimetic drugs and lung surfactant factor. PMID- 3841363 TI - A sustained increase of microsomal heme oxygenase activity following treatment of rats with Bacillus Calmette-Guerin and Corynebacterium parvum: its possible relation to the decrease of cytochrome P-450 content. AB - The alterations of various enzymes responsible for drug metabolism and heme metabolism were examined in the liver of female rats treated with Bacillus Calmette-Guerin (BCG) and Corynebacterium parvum (CP). Hepatic drug metabolizing enzyme activities and microsomal cytochrome P-450 and b5 content were significantly decreased for up to 15 and 10 d by a single i.v. administration of BCG and CP, respectively. In contrast, microsomal heme oxygenase activity was markedly increased after BCG and CP treatment and the increased enzyme activity was sustained in parallel with the decrease of drug metabolizing enzymes. Both BCG and CP also caused a significant decrease of delta-aminolevulinic acid synthetase activity shortly after their administrations. The decreased enzyme activity returned to normal levels by 12 h after the treatment of rats with BCG and CP. In addition, hepatosplenomegaly was observed in BCG and CP treated rats. Dose related changes of these microsomal enzymes were seen following the administration of BCG and CP. Additionally, there were sex differences in the effects of BCG and CP on the alteration of microsomal enzymes, female rats being more sensitive than male rats. These results suggest that the decrease of cytochrome P-450 and b5 content and drug metabolizing enzyme activities by BCG and CP could be related, at least in part, to the prolonged increase of heme oxygenase activity, that may lead to the increased breakdown of heme available for the synthesis of these hemoproteins. PMID- 3841364 TI - Population pharmacokinetics of racemic warfarin in adult patients. AB - The population pharmacokinetics of racemic warfarin was evaluated using 613 measured warfarin plasma concentrations from 32 adult hospitalized patients and 131 adult outpatients. Warfarin concentrations were measured in duplicate using a high-performance liquid chromatographic procedure. The pharmacokinetic model used was a one-compartment open model with first-order absorption (absorption rate constant set equal to 47 day-1) and first-order elimination. The extent of availability was assumed to be one. A linear regression model was used to evaluate the influence of various demographic factors on warfarin oral clearance. Age appeared to be an important determinant of warfarin clearance in this adult population. There was about a 1%/year decrease in oral clearance over the age range of 20-70 years. Smoking appeared to result in a 10% increase in warfarin clearance, while coadministration of the inducers phenytoin or phenobarbital yielded about a 30% increase in clearance. This study has yielded a predictive model that, when combined with appropriate pharmacological response data, may be useful in the design and adjustment of warfarin regimens. PMID- 3841365 TI - A polyexponential deconvolution method. Evaluation of the "gastrointestinal bioavailability" and mean in vivo dissolution time of some ibuprofen dosage forms. AB - A new deconvolution algorithm (DCON) suitable for pharmacokinetic applications is presented. It requires that both the impulse and input responses, typically systemic drug levels, be well described by polyexponential equations. DCON has a wider range of applications than an earlier method (DECONV) from which it is derived. A FORTRAN program is provided, making implementation of the technique a simple matter. DCON is demonstrated to evaluate the "GI bioavailability," defined as the rate and the extent of gastrointestinal drug release, of various ibuprofen dosage forms. The GI drug release kinetics exemplifies a pharmacokinetic system which cannot be evaluated using the previous deconvolution algorithm (DECONV) because of an initial zero drug level response. This limitation is not found in DCON. It is also demonstrated how the mean in vivo dissolution time MDT can be evaluated by deconvolution. PMID- 3841367 TI - Alternative medicine: the attitude of the Army Medical Services. PMID- 3841366 TI - The pharmacokinetics of alpha-methyldopa in dogs. AB - alpha-Methyldopa was intraarterially and orally administered to dogs at two dose levels in a randomized complete crossover design. The appearance of secondary peaks in the plasma concentration-time profiles indicated the presence of enterohepatically recycled methyldopa. This was established by the absence of a secondary peak following readministration of a dose after biliary cannulation and the detection of methyldopa in the bile of a cannulated dog. Enterohepatic recirculation was estimated to account for a mean of 16.2% of the area under the plasma concentration-time profile after intraarterial administration. Total systemic clearance, defined as the sum of elimination by all routes from the general circulation of the administered dose, and corrected for enterohepatic recirculation, averaged (+/- SD) 99.4 +/- 24.6 ml/min in the dog. An extended average apparent terminal half-life of 6.0 +/- 5.2 hr was exhibited after oral administration compared to an average half-life of 3.1 +/- 1.8 hr following intraarterial administration. Elimination kinetics were linear in the dose range studied. Oral plasma concentration data suggest that the apparent bioavailable fraction may be dose dependent. PMID- 3841368 TI - [Clinical trial of atracurium besylate for a patient with myasthenia gravis]. PMID- 3841369 TI - [Studies on the hepatocellular injury in an experimentally induced acute hepatic failure: macrophage-mediated suppression of immune response in acute hepatic failure-induced mice]. PMID- 3841370 TI - [A case of chronic hepatitis complicated with progressive systemic sclerosis and Graves' disease]. PMID- 3841371 TI - [Cryoprotective effect of 16,16-dimethyl PGE2 on gastric surface epithelial cells -scanning electron microscopic observation on gastric mucosal damage induced by 0.6N HCl]. PMID- 3841372 TI - Reproductive risk of paracentric inversion carriers: report of two unrelated cases with paracentric inversion of the long arm of chromosome 3. PMID- 3841373 TI - [External type all-purpose cardiac pacemaker system]. PMID- 3841374 TI - [Structuring drug-to-drug interaction knowledge based on formal representation]. PMID- 3841375 TI - Effects of synthesized phosphodiesterase inhibitors, DM 9278 and HWA 285, on pancreatic exocrine secretion of the dog. AB - The effects of synthesized phosphodiesterase inhibitors, DM 9278 and HWA 285, on pancreatic exocrine secretion were investigated in isolated and blood-perfused canine pancreas. Close-arterial injections of DM 9278 (10-300 micrograms) and HWA 285 (300-3000 micrograms) caused dose-dependent increases in the flow rate of pancreatic juice and perfusion blood flow. Bicarbonate concentration in the pancreatic juice stimulated by DM 9278 (300 micrograms) or HWA 285 (3000 micrograms) was significantly higher than that in the resting pancreatic juice, although neither of the compounds affected protein concentrations in the pancreatic juice. In the secretory volume, 100 micrograms of DM 9278 corresponded roughly to 1000 micrograms of HWA 285, 0.1 units of secretin or 0.3 units of pancreozymin. These secretory and vascular effects were not modified by pretreatment with atropine or sulpiride. This study suggests that both DM 9278 and HWA 285 act directly on ductular cells of the pancreas and induce secretion of water and electrolytes. PMID- 3841376 TI - Effects of alpha-fluoromethylhistidine on increase in histidine decarboxylase activity of maternal mouse kidney observed during late pregnancy and evidence for its non-mast cell origin by using estrogen and W/WV mice. AB - The increase of histidine decarboxylase (HDC) activity during late pregnancy in the whole bodies of fetal mice and the kidneys of their mothers were almost completely inhibited by i.p. administration of 25 mg/kg of alpha fluoromethylhistidine (alpha-FMH), a suicide inhibitor of HDC, starting on day 13 of pregnancy. The increase of HDC in fetal mice was previously shown to be in mast cells [T. Watanabe et al., Proc. Natl. Acad. Sci. U.S.A. 78, 4209-4212 (1981)]. The increase of HDC in maternal kidneys was examined by using estrogen and W/WV mice, which were devoid of mast cells and infertile. Treatment of castrated mice with 17-beta-estradiol increased the HDC activity of the kidney, and this increase was antagonized by concomitant treatment with clomiphene, an antiestrogen, confirming that the increase is mediated through an estrogen receptor. HDC activity in the kidney of W/WV mice was also increased by estradiol treatment, indicating that HDC activity was associated with non-mast cells. PMID- 3841377 TI - [Ocular findings in Barsy syndrome]. AB - Report on a male newborn with progeroid aspect, cutis laxa, intrauterine growth retardation, bilateral dislocation of the hip, generalized anomalies of ossification, peripheral corneal opacification comparable to corneal senile arcus, a diffuse, very discrete clouding of the stroma and an anterior polar cataract OD. Diagnosis and differential diagnosis of other progeroid and cutis laxa syndromes are discussed on the basis of the corresponding ocular findings. PMID- 3841378 TI - Pharmacokinetics of methimazole in humans. AB - A newly developed method for extracting and measuring methimazole in biological fluids was used to study the pharmacokinetics of methimazole in two euthyroid and eight hyperthyroid subjects. The volume of distribution approximated total body water; the biological half-life was 2-3 h in euthyroid and about 6 h in hyperthyroid patients. Total clearance was lower in hyperthyroid patients than in euthyroid subjects, and it did not increase after thyroid function was normalized. Bioavailability in euthyroid subjects was greater than 1 but only 0.5 in hyperthyroid subjects. The reasons for these observed differences are not known. PMID- 3841379 TI - Speech-tracking performance in single-channel cochlear implant subjects. AB - This study evaluated 20 deaf adults' ability to understand connected discourse under two conditions: (a) lipreading alone (LA), and (b) lipreading plus electrical stimulation by a single-channel cochlear implant (LI). Performance was evaluated using the speech-tracking procedure, which required the deaf receiver to repeat verbatim textual material read by another individual. The reception of ongoing speech was measured in terms of the number of words repeated correctly per minute. The results revealed, on the average, a significantly higher tracking rate in the LI condition (28.6 wpm) than the LA condition (16.4 wpm). There was a significant learning effect across sessions for both conditions. Subjects who were previous hearing aid users achieved a significantly higher tracking rate in the LI condition than did subjects who had no previous experience with amplification. Significant subject differences were present as a function of condition. Sixteen of the 20 subjects achieved higher tracking rates in the LI than in the LA condition. However, 4 of these 16 subjects showed similar relative gains in both conditions and 3 showed a decrease in performance in the LA condition over time. The remaining 4 subjects showed nearly equivalent tracking rates in both conditions over time. The data suggest that the majority of subjects were able to learn to make use of the cues provided by electrical stimulation by a single-channel cochlear implant to enhance their lipreading skills, at least for highly redundant material in a communicative situation. PMID- 3841380 TI - [Peridural morphine in opiate addicts]. PMID- 3841381 TI - On surface coils and depth pulses. AB - A computer program has been developed which calculates the signal response to a generalised depth pulse both on and off resonance. Results are displayed on a grey scale for any plane which includes the axis of the circular surface coil used to apply the pulse. Use of separate (coaxial) transmitter and receiver coils can be accommodated, and both in-phase and out-of-phase signal components can be displayed. Some methods of improving spatial resolution are demonstrated and the off-resonance performance of several depth pulses is compared. Results of the computer simulations are compared with experimental results on phantoms using a simple surface coil. PMID- 3841383 TI - [Outpatient treatment of postcataract using the neodymium-Yag laser]. PMID- 3841384 TI - The investigation of the monocyte-mediated tumor-specific rosette formation and cytotoxic capacity of patients with thyroid cancer. AB - Fourteen patients suffering from highly differentiated thyroid cancer and 10 patients with autoimmune thyroid disease were tested in the present study. The tumor-specific autologous rosette formation of peripheral monocytes was determined and was found to be increased in cancer patients. Using the monocytes as effector and the covered, prelabelled autologous red blood cells as target, a cytotoxic assay was carried out. The rosette formation and cytotoxic ability correlated with the time passed since the operation, present clinical stage and the expansion of tumor found during the operation. In Hashimoto thyreoditis and Graves' disease elevated rosette formation and normal cytotoxic ability were detected. PMID- 3841382 TI - The effects of nafazatrom in an acute occlusion-reperfusion model of canine myocardial injury. AB - The effects of lipoxygenase enzyme inhibitor nafazatrom on infarct size, haemodynamics, and prostanoid release was studied in a canine occlusion reperfusion model of ischaemic myocardial injury. Treatment was with 10 mg/kg nafazatrom i.d., starting before coronary occlusion, 2 h and 6 h thereafter, and was repeated in 6 h intervals. The left anterior descending (LAD) coronary artery was occluded for 6 h and reperfused for 42 h. Infarct size and anatomic area dependent on the occluded LAD were determined post mortem by the tetrazolium staining technique. Nafazatrom significantly reduced the extent of irreversible myocardial ischaemic damage whether it was expressed as g/100 g left ventricle (24 +/- 4 vs. 46 +/- 6 in controls; p less than 0.01; mean +/- SEM) or as percentage of LAD risk region for infarcting (38 +/- 8 vs. 65 +/- 7% in controls; p less than 0.05). Nafazatrom did not affect peripheral haemodynamics but during drug vehicle treatment and LAD occlusion systemic blood pressure, left ventricular pressure and dP/dtmax decreased while filling pressure, heart rate, and the S-T segments of the ECG increased. The incidence of ventricular fibrillation was 8% during drug treatment and coronary ligature vs. 25% in controls (n.s.). During reperfusion, nafazatrom reduced the incidence of ventricular premature contractions and tachycardia. Ex vivo platelet aggregation in response to collagen was not inhibited by nafazatrom. Prostanoid release (thromboxane B2 and 6-keto-prostaglandin F1 alpha as breakdown products of thromboxane A2 and prostacyclin, respectively) remained unaltered in vehicle controls but nafazatrom treatment elevated prostacyclin release significantly at 4 and 5 h during LAD occlusion.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841385 TI - [Influence of pirenzepin on intestinal motility in the therapy of duodenal ulcer]. PMID- 3841386 TI - Comparison between the actions of avian pancreatic polypeptide, neuropeptide Y and norepinephrine on the excitability of rat supraoptic vasopressin neurons. AB - Effects of pressure-applied avian pancreatic polypeptide (APP), neuropeptide Y (NPY) and norepinephrine (NE) on the activity of putative vasopressin synthesizing neurosecretory cells of the supraoptic nucleus were studied in pentobarbitone-anesthetized male rats. APP (17-170 microM) excited 80% (20/25), NPY (20 microM-2 mM) excited 23% (6/26) and NE (100-200 microM) excited 76% (26/34) of cells tested; no depressant actions were observed. However, simultaneously applied APP appeared to reduce the NE-evoked excitation in 4/4 cells tested. These data indicate that an endogenous pancreatic polypeptide-like peptide may mimic the excitatory actions of NE on supraoptic vasopressin synthesizing neurosecretory cells but only at high concentrations. These peptides do not potentiate but rather appear to interfere with NE's excitatory effects. PMID- 3841387 TI - Technetium-99m isonitrile complex as a potential myocardial imaging agent. PMID- 3841388 TI - [Role of vitamin E, superoxide dismutase and catalase in the development of early anemia in premature infants]. PMID- 3841389 TI - The measurement of differential thresholds for lifted weights by microcomputer controlled apparatus. AB - The measurement of differential thresholds (DLs) for lifted weights normally involves lengthy test sessions. This is due partly to the statistical techniques for measuring the threshold and partly to the methods adopted to present the stimuli. Attempts to speed up test procedures tend to produce unreliable DL estimates, or to measure the sense of force or effort rather than weight perception. To facilitate the measurement of DLs for lifted weights, an Apple microcomputer was programmed to generate Wetherill tracking procedures and was interfaced with two stimulus bearing turntables. Various lifting methods are easily implemented, and DLs are reliably and quickly measured. The adaptation of the apparatus for general use in investigating the haptic sense modality is discussed. PMID- 3841390 TI - Template-directed synthesis of oligoadenylates using cyanogen bromide and diiminosuccinonitrile. AB - Cyanogen bromide was found to be a highly effective reagent for the coupling of oligoadenylates on a polyuridylic acid template in aqueous solution. Imidazole and divalent metal ions were required for the reaction. Hexaadenylic acid was converted to (pA)12, (pA)18, (pA)24, (pA)30 and (pA)36 in the presence of 0.01 M Co2+ and imidazole. When the reaction was carried out at 25 degrees C for 3 days, the oligomers were obtained in a 34% overall yield. PMID- 3841391 TI - Synthesis and biological activity of nucleoside antibiotics, ascamycin and its amino acid analogs. AB - Synthesis of an alanylsulfamoyl nucleoside antibiotic, ascamycin was achieved by the condensation of N6-t-butyloxycarbonyl-2-chloro-9-(2',3'-O-isopropylidene-5'-O sulfamoyl- beta-D- ribofuranosyl)adenine(3) with t-butyloxycarbonyl-L alanylimidazole in the presence of NaH in DMF. Deprotection with 90% trifluoroacetic acid gave ascamycin in 61% overall yield. This procedure may be applicable for preparation of a number of amino acid analogs of ascamycin. PMID- 3841392 TI - [Nosographic limits of the Netherton syndrome]. AB - This paper present the case of a 5 year old girl affected by ichthyosis vulgaris, atopic diathesis (asthma - eczema), hair anomalies as pili torti, trichorrhexis invaginata. Such data are compared with the most frequent symptoms Netherton's syndrome. Although some difference be extant, the authors deem it appropriate that this case be included within the framework of this syndrome. The problem is therefore posed once again of the boundaries of Netherton's syndrome. Also considered are the most interesting hypotheses recently set forth by different authors with the aim of better defining this disease whose biological mechanism is still unknown. PMID- 3841394 TI - [Palpation procedure facilitating the clinical diagnosis of diffuse toxic goiter combined with autoimmune thyroiditis]. PMID- 3841393 TI - [Autonomic nervous system function of euthyroid and thyrotoxic goiter patients]. AB - Variation pulsometry, a method of mathematical analysis of the cardiac rhythm, was used to assess function of the autonomic nervous system in patients with euthyroid and thyrotoxic goiter. Simultaneously orthostatic tests for a selective effect on parts of the autonomic nervous system were done. A total of 46 patients were examined: 16 with nodular forms of euthyroid goiter and 30 with thyrotoxic goiter III. In the patients with euthyroid goiter a moderate degree and in the patients with thyrotoxicosis a pronounced degree of tension of both parts of the regulation system were revealed. At the visceropathic stage of thyrotoxicosis, intra-endocrine interrelationships with the blockade of the sympathetic part of the autonomic nervous system are changed that can be of importance for working out medicamentous preoperative preparation of patients. PMID- 3841395 TI - [Changes in the immune status indices of patients with diffuse toxic goiter in different stages of the disease]. AB - The purpose was to study some indices of immunity in the period of mercazolyl therapy and during DTG remission. T4, T3, TSH and some indices of the immunological status: RFCc, RFCl, RFCn, stimulation index (SI) in the lymphocyte blast transformation reaction, serum immunoglobulins (Ig A, M, G) were studied in 44 patients. In diffuse toxic goiter (DTG) RFCc, RFCl and RFCn were two times and more as less, the Ig G level was raised 1.5-fold. Mercazolyl therapy corrected RFCc, RFCn whereas RFCl remained lowered. The Ig G level correlated with the T4 and T3 levels. In the DTG patients an initial drop of SI (50%) was undetectable. Mercazolyl therapy raised SI by the 4-5th week of treatment (113%). SI returned to normal by the 10-12th week. In DTG remission most of the immunologic indices returned to normal. PMID- 3841396 TI - [Testosterone metabolism in the liver of rats administered the antiandrogen niftolide]. PMID- 3841397 TI - Permeability of the blood-brain barrier to neuropeptides: the case for penetration. AB - Evidence that peptides can cross the blood-brain barrier (BBB) is reviewed. Penetration is suggested by the observations that blood levels correlate with cerebrospinal fluid levels for many peptides and that peripheral administration of peptides results in effects on the CNS. Passage is confirmed by experiments involving administration of a peptide (immunoactive or radioactive) in one compartment and identification of its appearance in the other, supported by such methods as selective labeling, cross-reactivity with highly specific antibodies, and chromatography. The degree of passage varies among peptides and their analogs. The major route of passage is probably by a non-competitive, non saturable mechanism, wih the physicochemical characteristics of the peptide (e.g. lipophilicity, charge, molecular weight, and protein binding) determining the degree of passage. A competitive transport mechanism also exists for some peptides. Penetration of the BBB via large pores or by pinocytosis does not appear to be of major importance for peptides. Permeability of the BBB to peptides, but not to the larger iodinated albumin, is affected by intraperitoneal administration of aluminum, apparently by an increase in the permeability of the membrane to lipophilic materials. PMID- 3841398 TI - [Efforts toward a cluster analysis taxonomy of bronchial asthma]. PMID- 3841399 TI - [Value of computed tomography in orbital tumors]. PMID- 3841400 TI - [Computers in radiology. Practice organization with the COMRAD information system]. AB - The function of the program will be explained by means of a text example and the means by which a Radiologist can overcome lack of time by simultaneously increasing the quality and quantity of the reached achievements will be presented. The difficulty of choosing the right system will be pointed out. PMID- 3841401 TI - Functional and biochemical basis for multiple muscarinic acetylcholine receptors. AB - The novel antimuscarinic compound pirenzepine (PZ) has generated considerable interest in the basis and the implications of muscarinic acetylcholine receptor (mAChR) heterogeneity. [3H]PZ has been used extensively to identify and characterize the putative M1 (high affinity for PZ) mAChR subtype, which predominates in central nervous system (CNS) and ganglia. The heterogeneity sensed by PZ is not identical to the heterogeneity sensed by agonists. Differences in effector coupling do not necessarily provide a simple explanation for the molecular basis of these putative M1 and M2 subtypes. Therapeutic and untoward effects of muscarinic drugs may be mediated by independent mAChR subpopulations which may be pharmacologically exploited to produce more highly selective as well as efficacious new drugs. PMID- 3841402 TI - Neuropeptide Y and sympathetic vascular control in man. AB - A parallel increase in systemic plasma levels of neuropeptide Y (NPY)-like immunoreactivity (LI) and noradrenaline (NA) was found during thoracotomy and surgery involving cardiopulmonary bypass in man. Thus, plasma levels of NPY-LI increased from 29 +/- 4 pmol/l before anaesthesia to 59 +/- 10 after thoracotomy and to 87 +/- 8 pmol/l upon cardiopulmonary bypass. The corresponding NA levels increased from 1.3 +/- 0.1 nmol/l before anaesthesia to 3.0 +/- 0.6 and 4.2 +/- 5 nmol/l after thoracotomy and cardiopulmonary bypass, respectively. A significant correlation was found between plasma levels of NPY-LI and NA during the operation but not between NPY-LI and adrenaline. The NPY-LI in human plasma was found to be similar to synthetic porcine NPY on reversed phase high performance liquid chromatography. Human submandibular arteries contained high levels of NPY-LI (24 +/- 3 pmol/g). In in vitro experiments on isolated human submandibular arteries, NPY in low concentrations (1000 pmol/l) was found to potentiate the contractile effects of NA or transmural nerve stimulation and to exert vasoconstrictor activity per se in higher concentrations. The calcium-entry antagonist nifedipine abolished both the NPY-induced contractions and the enhancement of NA-evoked contractions. NPY depressed the nerve stimulation-evoked 3H-NA release from human submandibular arteries via a prejunctional mechanism which was resistant to nifedipine. NPY contracted human mesenteric veins and renal arteries, but not mesenteric arteries. In conclusion, NPY seems to be co-released with NA upon sympathetic activation in man. Furthermore, NPY exerts both pre- and postjunctional effects on sympathetic control of human blood vessels. PMID- 3841403 TI - [The development of the high sensitive thyroid stimulating hormone radioimmunoassay]. PMID- 3841404 TI - The cusum test of homogeneity with an application in spontaneous abortion epidemiology. AB - We test the hypothesis of homogeneity over time in the rate of an event with a modification of Page's cumulative sum (cusum) procedure. The modification draws on an indifference zone approach to testing that is well suited to the epidemiologic study of retrospective data. We provide procedures for evaluating the significance level of the largest observed cusum value occurring in a sequence of fixed length. We draw inferences unconditionally with a known baseline rate of the event, and conditionally on observed margins with unknown baseline rate. Data collected over a five year period from one New York City hospital serve to illustrate the modified cusum test in a study of fluctuations in the proportions of chromosomally normal, trisomic, X-monosomic and triploid spontaneous abortions. PMID- 3841405 TI - [How to evaluate male fertility in 1984? II. Biology]. AB - If one regards the 10th percentile as the lower limit which permits a semen sample to be regarded as normal in a population, one can show that 42% of infertile men and 71% of fertile men have "normal" semen, but 36% of men considered to be primarily infertile have fertilised their wives in the year which follows their first spermiogram. One can imagine the difficulty of confirming masculine infertility in a particular case. The author studies the laboratory methods which allow the diagnosis of masculine fertility to be improved. PMID- 3841406 TI - [Distal tubal surgery]. AB - The author summarizes his extensive experience of surgical treatment of tubal sterility. He shows by analysis of statistics of 1968 to 1980, that microsurgery does not significantly improve the total of intrauterine pregnancies, but seems to reduce the number of extrauterine gestations. He states that the results of tubal surgery seem to have attained a plateau, whilst one can anticipate a considerable development of in vitro fertilisation in the coming years. PMID- 3841407 TI - [Prevention of tubal sterility]. AB - The prevention of tubal sterility necessitates not only the diagnosis and treatment of venereal infections, but also the prevention of post-partum, post abortum, and especially iatrogenic infections. Equally, the surgeon has a role to play, for many tubal sterilities follow traumatic surgical interventions in young women and adolescents. PMID- 3841408 TI - Parasite-specific interaction of N-[4-(4'nitroanilino)-phenyl]-S-(beta carboxyethyl)-dithiocar bamic acid-ester with arginyl-tRNA-synthetase from Dirofilaria immitis. AB - A potent inhibition of arginyl-tRNA-synthetase from Dirofilaria immitis by N-[4 (4'nitroanilino)-phenyl]-S-(beta-carboxylethyl)-dith iocarbamic acid-ester (CGP 8065) is demonstrated, which indicates the charging of amino acids to tRNA as a possible target for the chemotherapeutic attack by this filaricidal compound. CGP 8065 competes with ATP; the inhibition constant was determined to be 13 micrograms ml-1 (34 microM). The Michaelis constants for arginine and ATP were found to be 5 microM and 0.4 mM, respectively. The inhibition of arginyl-tRNA synthetase by CGP 8065 was shown to be specific for D. immitis; the isofunctional enzymes from Ascaris suum and rat liver were not affected. PMID- 3841409 TI - A radioimmunoassay system for LH based on the antigenic similitude of LH with HCG: methodology and applications. AB - A double antibody radioimmunoassay (RIA) system for LH (LH-IEP Kit) was developed using the antigenic similitude of LH with HCG. The first antibody (Ist Ab) is rabbit anti-HCG serum, initial dilution 1:200 000. The tracer is 125I-HCG (code MJ-14 Swierk Poland). The standard curve is calibrated with the reference preparation hLH-Ist-IRP 68/40 kindly offered by WHO. The IInd Ab is pig anti rabbit IgG serum. The incubation conditions: volume-0.3 ml; time-24 hrs with Ist Ab and 24 hrs with the IInd Ab at ambient temperature. The sensitivity of the RIA system for LH is 1.5 mIU/ml. To validate our RIA system the LH was measured in the serum samples collected from 9 women during the menstrual cycles, from 2 boys during the GnRH test, from 2 amenorrheic women and from 20 children, adolescents and adults with miscellaneous pathologies. In all these samples, parallel measurements of LH and FSH were performed using DDR commercial RIA Kits-SSW. It is to be mentioned that the LH-RIA Kit-SSW is not completely homologous, the Ist Ab being rabbit serum anti-HCG. The results obtained during 4 menstrual cycles, in which the LH peak is observed around the mid point of the interval are: follicular phase 17.92 +/- 5.58 mIU/ml (means +/- SD) with LH-IEP-Kit and 5.51 +/ 2.77 mIU/ml with the LH-SSW-Kit, peak: 26.07 +/- 22.13 mIU/ml and 9.13 +/- 5.60 mIU/ml respectively; luteal phase: 12.55 +/- 5.46 mIU/ml and 3.4 +/- 2.38 mIU/ml, respectively. The LH values observed by the two kits through all 9 menstrual cycles are well correlated ("r" values in the range 0.7-0.9) but high discrepancies were observed in the remaining 3 cycles ("r" between 0.07 and 0.6). These discrepancies as well as those observed in some adolescents with genetic anomalies and in a patient at climacterium are suggesting that the two LH-RIA systems measure not only a common molecular area but also different areas of the LH circulating molecules. PMID- 3841410 TI - Effect of selective and non-selective antimuscarinics on rectosigmoid motility and gastrointestinal transit. AB - In 12 healthy volunteers, a rectosigmoid motility index (RSMI) was measured when either placebo, 0.5 mg atropine, or 5 mg pirenzepine was given intravenously as a single dose, double-blind, in random order after a control period of 30 min. Compared with the control period, atropine gave a significant decrease of the RSMI during the entire recorded period of 90 min, whereas pirenzepine inhibited RSMI only during the first two 15-min periods. In another series of experiments, gastrointestinal transit was assessed by means of a radiographic marker method. In healthy volunteers, gastrointestinal transit was estimated (n = 20) and gastric secretion was measured (basally and after modified sham feeding; n = 10) during oral medication with placebo, 50 mg pirenzepine twice daily, or 17.5 mg benzilonium bromide twice daily. In 10 of the volunteers gastrointestinal transit was also estimated with 35 mg benzilonium bromide twice daily, and in the other 10 volunteers with 0.6 mg L-hyoscyamine twice daily. The number of retained markers was significantly lower during pirenzepine than during L-hyoscyamine treatment. Neither dose of benzilonium bromide changed the transit of markers. Compared with non-selective antimuscarinics, the effect of pirenzepine was differential: with equipotently acid-reducing doses the decrease of the RSMI after pirenzepine lasted shorter and gastrointestinal transit was accelerated. PMID- 3841411 TI - The distribution of labeled antibiotics in normal and infected rat brain: an autoradiographic study. AB - The penetration and distribution of labeled benzylpenicillin and cefuroxime into normal and infected rat brain was studied. 15 rats were injected intravenously with radiolabeled antibiotic; 5 of these served as uninfected controls and 10 were previously infected by stereotactic deposition of 10(11) B. fragilis in the right frontal lobe inducing bacterial cerebritis. The animals were killed after administration of antibiotic. The brains were immediately frozen and cut into 20/micron sections. Autoradiographic recordings showed that benzylpenicillin was mainly distributed in the cerebrospinal fluid and pial vessels but no activity was found in the deeper grey or white matter. In contrast, cefuroxime was found not only in the surrounding but also in the centre of the infected area. The autoradiographic technique provides a valuable method for studies of the distribution of antibiotics in the brain. PMID- 3841412 TI - [Hemodynamic effects of an inhibitor of the vascular effects of vasopressin in patients with congestive heart failure]. AB - To assess the role of vasopressin (AVP) in congestive heart failure (CHF), we investigated 10 patients with CHF refractory to conventional treatment, before and 60 minutes after intravenous administration of 5 micrograms/kg of d(CH2)5Tyr(Me)AVP, a specific antagonist of AVP at the vascular receptor level. Heart rate, systemic arterial pressure, pulmonary arterial pressure, pulmonary capillary wedge pressure, cardiac index by thermodilution, and cutaneous blood flow by laser-Doppler technique were measured. In 9 patients there was no significant hemodynamic and cutaneous blood flow response to the AVP antagonist. Plasma AVP was 2.3 +/- 0.8 pg/ml and plasma osmolality 284 +/- 14 mosm/kg H2O. The tenth patient had the most severe CHF. His plasma AVP was 55 pg/ml and plasma osmolality 290 mosm/kg. He responded to the AVP antagonist with a marked decrease in systemic arterial pressure from 115/61 to 79/41 mm Hg, in pulmonary arterial pressure from 58/31 to 33/13 mm Hg and in pulmonary capillary wedge pressure from 28 to 15 mm Hg. Simultaneously cardiac index increased from 1.1 to 2.21 X min-1 X m-2 and cutaneous blood flow rose 5-fold. Thus, most patients with CHF have only moderately elevated plasma AVP and its role in determining peripheral vascular resistance appears to be limited. AVP may become important in rare patients presenting with marked hemodynamic instability and very high plasma AVP. PMID- 3841413 TI - [Athletic rehabilitation following arthroscopic meniscectomy]. PMID- 3841414 TI - [A severe knee injury from the viewpoint of the soccer player]. PMID- 3841415 TI - [Surgical tactics in thyroid diseases in relation to immunomorphological indicators]. PMID- 3841416 TI - [Use of microcomputers in the storage of biopsy records]. PMID- 3841417 TI - [Inhibitors of the serine-proteases of coagulation with special reference to antithrombin III and heparin cofactor II]. PMID- 3841418 TI - [Cancer of the esophagus as a second primary neoplasm in a patient with gastric lymphoma]. PMID- 3841419 TI - [Sexually transmitted diseases after travel in tropical countries]. PMID- 3841420 TI - Turnover study of heparin cofactor II in healthy man. AB - Heparin cofactor II (HC II) is a heparin-dependent inhibitor of thrombin, distinct from antithrombin III (AT III). This study was designed to evaluate its metabolism in healthy subjects. Purified HC II was labelled with 125I by the lactoperoxidase-glucose oxidase technique. The biological activity of the HC II was unchanged after labelling as was its migratory pattern by crossed immunoelectrophoresis in the presence of heparin or dermatan sulfate. Three healthy volunteers were injected with 10 microCi and the plasma radioactivity was measured daily. The data were approximated by a sum of two exponential terms and the metabolism of HC II was described by a two compartment mamillary system. The mean values of fractional catabolic rate, intravascular fraction and half-life of the elimination phase were respectively: 0.44 d-1, 0.60 and 2.53 d. These parameters are of the same order of magnitude as those reported in the literature for AT III. The plasma HC II concentration in the 3 subjects ranged from 61 to 82 micrograms/ml as estimated using our purified preparation. Accordingly, the absolute catabolic rate ranged from 1.17 to 1.36 mg X kg-1 X d-1. PMID- 3841421 TI - Plasmatic and urinary protein C levels in nephrotic syndrome. PMID- 3841422 TI - Transient ischemic attack (T.I.A.) in a patient with non-thrombogenic hereditary protein C deficiency under oral contraceptives. PMID- 3841423 TI - [Observations on preimplantation mouse embryos after irradiation and after a combination of ionizing rays and drugs]. PMID- 3841424 TI - Synthesis and molecular structure of prolame, N-(3-hydroxy-1,3,5(10)-estratrien 17 beta-yl)-3-hydroxypropylamine; an amino-estrogen with prolonged anticoagulant and brief estrogenic effects. AB - The synthesis and molecular structure of prolame, N-(3-hydroxy-1,3,5(10) estratrien-17 beta-yl)-3-hydroxypropylamine, is described. It was characterized by ir, nmr, mass spectrometry and chemical analysis. The crystal structure of this compound was determined by single-crystal x-ray diffraction. Prolame belongs to space group P212121. Cell dimensions are: a = 8.356(2), b = 13.343(4) and c = 16.119(4) A. Z = 4; R = 4.1%. PMID- 3841425 TI - The anticoagulant effect of prolame, N-(3-hydroxy-1,3,5(10)estratrien-17 beta-yl) 3-hydroxypropylamine, a novel amino-estrogen. AB - The anticoagulant and estrogenic effects of prolame, N-(3-hydroxy-1,3,5(10) estratrien-17 beta-yl)-3-hydroxypropylamine, are described. A single subcutaneous injection of prolame in male mice, ovariectomized mice, adult and infant male rats, produced dose-dependent increases of blood clotting time, which could be observed with the larger doses even after 4 days. In ovariectomized mice, prolame produced vaginal cornifications of shorter duration than those produced by estradiol-17 beta. The evidence suggests that, in contrast with currently used estrogens, prolame would not generate cardiovascular accidents if used for the treatment of prostatic carcinoma; it could also be exceptionally effective for the prevention of thrombosis. PMID- 3841426 TI - Effect of high daytime temperatures on the intake and utilisation of water in lactating Friesian cows. AB - Four primiparous Friesian cows in mid-lactation and housed in climate chambers were simultaneously exposed to three sequential climate treatments: 1, a three week period in a thermoneutral environment (ambient temperature Ta 14-21 degrees C and relative humidity r.h. 60-70%); 2, a similar period during which they were exposed to Ta max. 38 degrees C/r.h. max. 80% for up to 7 h and Ta 14-21 degrees C/r.h. 60-70% for 17 h each day; and 3, a three-week period during which they were subjected once more to the thermoneutral conditions described for 1. Water and a complete feed were constantly available. Compared with water intake (drinking water + feed water) under thermoneutral conditions cows exposed to treatment 2 significantly increased their mean intake by 12.2%; in three cows, this involved a phase-shift of greater than 20% in drinking habits from day (hot) to night (cool) time. Water balance trials conducted at the mid-point of each treatment revealed that the mean losses of water via urine, faeces, milk, sweat and saliva as a percentage of water intake changed significantly resulting in a net gain (retention) of body water. An accompanying significant increase in live weight despite a 9.1% decrease in DM intake during treatment 2 confirmed the water retention results. On return to thermoneutral conditions (3), the cows exhibited a marked weight loss and a significant increase in urinary water excretion over treatment 1 and 2 values, signifying that a large proportion of the water retained during 2 was of extracellular origin.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841427 TI - [Friction lesions of the knee during sports]. PMID- 3841428 TI - [Surgical treatment of otosclerosis. Therapeutic results of employment of the Fisch prosthesis in 100 consecutive patients with otosclerosis]. PMID- 3841429 TI - Computers and veterinary practice in the United Kingdom. AB - The results of a survey of 103 computers being used by veterinary surgeons in the United Kingdom are presented. Details of the hardware and software in use are given as well as the costs, time taken to change to computerisation and the ease of implementing such a changeover. The problems that arose with hardware, software, supply companies and staff are summarised. Details are presented about after sales service contracts, office staff training, user opinions as to overall cost effectiveness, and advice offered to colleagues considering changing to computerisation. PMID- 3841430 TI - Efficacy of ivermectin paste against Strongyloides westeri in foals. PMID- 3841431 TI - [Possibilities of embolization in life-threatening hemorrhage]. PMID- 3841432 TI - [Experience in using cluster analysis and the prognosis of the stages of epizootic risk for Newcastle disease in poultry]. AB - An attempt was made to use clastic analysis and projection of the steps of the epizootic hazard with regard to Newcastle disease. There were no records of the disease after 1982 but still it is the object of consideration on the part of specialists. A clastic analysis was made on the base of a factorial model of Newcastle disease in this country for the 1970-1979. Used was a programme already worked out and practised at the Pilot Computor Center of the Medical Academy, Sofia. The districts in the country were grouped in a dendogramme, 16 groups being distinguished out of a total of 27 districts. This showed that regardless of the small territory of the country the districts are sufficiently differing between each other (due to the various degrees of integration) so that they could not be grouped together by similar values of intensity of poultry breeding and epizootic conjuncture with regard to Newcastle disease. Districts of epizootic hazard ranging from 1st to 5th degree substantiate the use of a differential approach in building up the tactics of prophylaxis and control of the disease, while measures concerning the poultry dressing combines should be at a high level regardless of the category of the respective district. The grouping of neighboring districts on a territorial principle disclosed the existence of reasons of climatic-and-geographic nature that could predispose equal degrees of intensity of poultry breeding and epizootic hazard. PMID- 3841433 TI - [Regulation of free radical oxidation of pulmonary surfactant lipids]. AB - Surface-active substances of lung tissue, covering the alveoli, resembled the biological membranes in their structure. Their composition was controlled, among the other factors, also by free radical oxidation reactions. Under conditions of circulatory hypoxia the activity of antioxidative enzymes correlated with the alterations in antioxidative activity, with the rates of spontaneous and inducible lipid peroxidation in lung surfactants. As surfactant exhibited a limited antioxidative activity important for resistance of alveolar pneumocytes, their functions may be controlled by various exogenous antioxidants. PMID- 3841434 TI - [Nitrogen metabolic indices of infants fed a new milk mixture]. AB - The efficacy of utilization of the protein compound from Ladushka, a new formula mixture, was studied in infants of the first 6 months of life, starting from the neonatal period. The protein component of the mixture consisted of casein and decalcified whey proteins (1:1). Calcium content comprised 400 mg/l, and its ratio with phosphorus approached the values recommended for formula feeding. The mass volumes of accessible lysine and cystine, despite additional enrichment of the mixture with these amino acids, were considerably reduced versus the expected values, that may be explained by insufficiently sparing technology of preparation. PMID- 3841435 TI - [Regulation of the activity of the blood kinin system as a method for the pathogenetic therapy of pulmonary tuberculosis]. PMID- 3841436 TI - [Surfactant of the pulmonary alveoli. Physicochemical properties, biosynthesis and methods of determining the maturity of the lung tissue]. PMID- 3841437 TI - Microsomal N- and C-oxidation of 4-substituted N-benzylanilines. AB - Using direct specific analytical techniques microsomal metabolism of N-benzyl-4 substituted anilines has been investigated and found to include both N- and C oxidation. N-Debenzylation was observed with all substrates and species examined. N-Oxidation usually yielded aryl nitrones, although the N-hydroxy derivative of the 4-chloro-substituted substrate was identified in some species. This is the first direct evidence of microsomal N-hydroxylation of a secondary aniline. The metabolic formation of amides from these secondary amines was observed and is believed to be a novel class of metabolite for these substrates. PMID- 3841438 TI - [Skin diseases in the Republic of Uganda]. PMID- 3841439 TI - [Latent inhibition in the mouse and rat in the conditioned passive avoidance response]. PMID- 3841440 TI - Local cerebral glucose utilisation in experimental chronic hydrocephalus in the rat. AB - Many of the clinical features of normal pressure hydrocephalus have been ascribed to stretching of the periventricular nerve fibres. However, many patients may be asymptomatic despite considerable ventriculomegaly. To define the periventricular changes in cerebral energy metabolism we have measured local cerebral glucose utilisation in hydrocephalic and control Sprague-Dawley rats. Experimental hydrocephalus was induced by injection of kaolin into the cisterna magna of 3 week-old rats. After 3 months, the animals fed and walked normally. LCGU was measured using the 14C-deoxyglucose method of Sokoloff. Autoradiographs were prepared and isotope concentration determined by densitometry. Glucose utilisation was measured in 39 anatomically defined areas, widely distributed throughout the brain, and comparisons between hydrocephalic animals and controls (given intracisternal saline) were made by analysis of variance. It was found that there was no significant difference in glucose utilisation between the two groups of rats in any of the areas measured. Hence ventriculomegaly in the young rat does not impair LCGU in surviving periventricular tissue. PMID- 3841441 TI - Antibacterial and antifungal activity of Avarone and Avarol. AB - The sesquiterpenoid hydroquinone and quinone, Avarol and Avarone, were previously found to be potent antitumor agents (Muller et al., 1984). In the present study it is reported that in aqueous solution (pH 7.2), in the presence of dimethylsulfoxide, Avarol is converted to Avarone. Avarone and to a smaller extent also Avarol were active against a variety of grampositive bacterial species. The highest activity was determined for Streptococcus pneumoniae and Erysipelothrix rhusiopathiae (MIC 0.781 mg/l). The antibacterial activity can be augmented 2 to 4-fold by lowering the pH in the culture medium from 7.0 to 6.0. The efficiency of Avarone and Avarol was abolished in the presence of serum. No antibacterial activity was determined in gramnegative bacterial species. In addition, Avarol and to a smaller extent also Avarone displayed an antifungal activity on Trichophyton species and Microsporum canis (MIC: 15.6-62.5 mg/l), while Avarone and not Avarol was active on Aspergillus niger, no activity was found against Candida species. These data indicate that the antitumor agents Avarol/Avarone display also antibacterial- and antifungal activities against a limited range of microorganisms. PMID- 3841442 TI - [Effect of interlok, remantadine and biotop on normal monocyte functional activity and in acute viral hepatitis]. AB - The influence of interlok, biotop and remantadine on the functional activity of monocytes was determined with the use of the NBT test permitting the quantitative evaluation of this characteristic. In this study interlok was found to give promising results in the treatment of acute viral hepatitis, due both to its antiviral action and to the stimulation of the functional activity of monocytes. biotop proved to render a sharply pronounced stimulating effect on the functional activity of monocytes, thus enhancing antiviral resistance. Remantadine suppressed the functional activity of monocytes and increased their lesion by the virus, thus creating favorable conditions for virus persistence in monocytes. PMID- 3841443 TI - [Gamma-topography of the cerebrospinal fluid passages of the spinal cord in traumatic injuries of the brachial plexus at the preganglionic level]. AB - Gamma-topography of the cerebrospinal fluid tracts of the spinal cord (GCTSC) was conducted in 28 patients with traumatic injuries of the brachial plexus at the preganglionic level. The object of GCTSC was to identify the character of damage inflicted to the spinal cord, its meninges, and the roots at the preganglionic level in the presence of the pain syndrome. Spatial-temporal distribution of the radiopharm agent in the submeningeal space served as the basis for setting apart radiological signs characterizing the anatomical disorders and disturbances in cerebrospinal fluid dynamics in the submeningeal space of the spinal cord. The radiological picture was always composed of adhesive-cicatricial and adhesive cystic processes with arachnoid cysts or cerebrospinal fistulas in the cervicothoracic segment of the spinal cord. PMID- 3841444 TI - Mortality, morbidity and long-term results in surgically treated hyperthyroid patients. Review of 597 cases. AB - An analysis is presented of 597 cases of Graves' disease or toxic multinodular goitre surgically treated in 1956-1980. The mortality rate was only 0.2%. The incidence of postoperative haemorrhage was 0.2%, damage to the recurrent laryngeal nerve 3.2%, postoperative thyrotoxic crisis 1.7%, acute hypoparathyroidism 2.2% and acute postoperative respiratory failure due to tracheomalacia 0.5%. Early complications were significantly more common among the patients with Grave's disease than in the multinodular goitre group. Thyroid function was re-evaluated in 116 patients after a mean postoperative interval of 9 years. Hyperthyroidism had recurred in ten of them and six were hypothyroid (8.6 and 5.2%). The evolution of the thyroid functional status was not significantly related to the pathology or to the sex or age of the patients. PMID- 3841445 TI - Early dumping reaction after partial gastrectomy and its relation to preoperative apomorphine testing. AB - Risk factors for postoperative early dumping symptoms were studied prospectively in 289 consecutive peptic ulcer patients followed up for 5 years after antrectomy and gastroduodenostomy with or without vagotomy. Grade 2 or 3 dumping was present in 14% of the patients and was about four times as frequent in women as in men after antrectomy alone. The incidence of such dumping grades was twice as high after combined antrectomy and vagotomy as after antrectomy alone. Both differences were statistically significant. Milk intolerance, which often appeared as a symptom of dumping, was more common after combined antrectomy and vagotomy. Dumping seemed primarily to be related to the sex of the patient or to milk intolerance, whereas vagotomy additional to antrectomy seemed to enhance the risk of incurring dumping by causing milk intolerance. Grade 2 or 3 dumping was statistically associated with postoperative loss of weight. Pre operative apomorphine test was performed with the aim of detecting predisposition to postoperative dumping reaction. The authors conclude that apomorphine test preoperatively cannot predict postoperative dumping. PMID- 3841446 TI - Homeorhesis during early lactation. Euthyroid sick-like syndrome in lactating cows. AB - Serum levels of thyroxine (T4), triiodothyronine (T3) and reverse T3 (rT3) were studied in dry, early (first trimester) and middle (second trimester) lactating purebred Holstein cows. The study encompassed three different seasons: autumn, winter and spring. Under comfortable weather conditions (temperature 22 degrees C; relative humidity, 40%) or moderately hot (28 degrees C; 60%), January and October, respectively, cows in early lactation exhibited significantly lower levels of T4 and T3, and higher values of rT3 than dry or middle lactating animals. In contrast, during May, when environmental temperature increased (34 degrees C; 40%), a clear-cut shift in T3/rT3 ratio occurred, and animals in early lactation exhibited the highest T3 and the lowest rT3 concentrations. These findings suggest that in dairy cattle, peripheral thyroid hormone metabolism plays a major role in regulating the homeorhetic responses involved in the maintenance of high priority functions. PMID- 3841447 TI - [An improved method for determination of phosphoglycerate kinase isoenzyme patterns of murine hemopoietic cells by cellulose acetate membrane electrophoresis]. PMID- 3841448 TI - Electrical stimulation of the ear. Symposium. Brussels, 1984. PMID- 3841449 TI - [Etiological evaluation of deafness in children]. AB - In relation to cochlear implants, the authors review the various etiologies of deafness in infancy and childhood, either genetic or acquired in order to determine the criteria for advising implantation. They put forward the necessity of complete evaluation of all the auditory pathways involved to determine if a premature who has sustained hypoxicischemic encephalopathy and a full term baby have the same chance to benefit from cochlear implants after meningitis. Defined criteria are urgent needs for patients and parents. PMID- 3841450 TI - Diagnosis and prevention of total deafness in relation to selection criteria of cochlear implant. AB - The authors present their general phylosophy in their approach of the selection of candidates for cochlear implant. They stress the fact that although a great effort is spent in the development of cochlear implant projects, an equal amount of energy has to be spent to the prevention of deafness, especially of the iatrogenic type. PMID- 3841451 TI - [Rehabilitation programs for patients with cochlear implants as a function of acquired experience in logopedics for deaf children]. AB - Rehabilitation of patients after cochlear implant surgery should be planified along the same basic principles as those that have been envolved for the adaptation of patients to a classical hearing aid or acoustic prosthesis. When this is adapted to a patient with a sensorineural hearing loss, the quality of hearing differs from that of normal hearing because the pathological inner ear introduces distorsions. The patient therefore has to be trained to equate the new auditory sensations with those he had previously, which is basically the same situation as with a cochlear implant. Some profoundly or totally deaf patients are fitted with vibro-tactile aids and they also have to be trained to make use of these new sensations in a meaningful way for an aid to speech understanding. For the above reasons the term "cochlear prosthesis" is considered particularly adequate. It also has the advantage of playing down the surgical aspect of this new technique, often overemphasized by the media and creating exaggerated emotional involvement of the patients. If the above facts are recognized, one should entrust the rehabilitation of patients fitted with cochlear prostheses to logopeds (speech therapists) well trained in the habilitation and prosthetic adaptation of profoundly deaf children. Only they have the expertise necessary to devise and apply a program founded upon experience. This will help avoid the pitfalls into which several surgically directed cochlear implant teams are currently falling. One of these is to design a training program in function of the tests meant to measure the patients' new capacities.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841452 TI - Information transmission with an eight channel bipolar cochlear implant. Acoustic simulation experiments. AB - In order to find the best stimulus parameters for the processing of a speech signal for cochlear implant applications, a speech processor was developed. The information which can be transmitted by means of an eight channel implant is simulated. The results indicate that identification and forced choice discrimination of (CV) and (VC) syllables is possible. The perception of consonants is more affected than that of vowels. Within one test session an effect of learning was established which remained restricted to the trained filter condition. PMID- 3841453 TI - [Personal experience with a unicanal extracochlear implant in reference to rehabilitation in total bilateral deafness. Multicenter study. Preliminary report]. AB - Our choice of a unicanal extracochlear implant is characterized by a reasonable attitude and simplicity. Simplicity and reason, because the already existing experiments show that in the field of cochlear implants there is no correlation a priori between the satisfaction of the research worker developing a complex electronic system in the laboratory and the satisfaction of the patient benefiting from such a system. Furthermore, the extracochlear implant respects and conserves the anatomical structure of the cochlea. It does not compromise future interventions. A replacement could be carried out in the future should a more perfected system be invented. The latter argument is particularly useful if a child is being considered for an implant. All patients with implants benefit from the following results: the satisfaction of hearing their own voice again, a better control of the voice (loudness and intensity), comprehension is facilitated (lip reading and noise perception), end of the sensation of isolation. The first results obtained are very encouraging. We find it most essential to continue our work in the same manner and with an inter-University working group (GRIC). The standardisation of results of the various teams involved seems to be imperative. We conclude by the following: At the present state of our knowledge, the unicanal extracochlear implant seems to be a reasonable solution and a realistic approach in the rehabilitation of total bilateral deafness. PMID- 3841454 TI - Extracochlear eight-channel electrode system. Report on 104 patients. PMID- 3841455 TI - The Chorimac-12. A multichannel cochlear implant for total deafness. Description and clinical results. AB - More than 90% of cases of patients suffering from acquired or congenital deafness may be provided with some sound sensation owing to the electrical stimulation of the few cochlear nerve fibers that are still present in the deaf cochlea. In order to obtain some speech discrimination without lip reading it is necessary to elicite different frequency sound sensations. Thus electrically proofs compartments must be performed all along the cochlear keyboard. The placement of 12 intra-cochlear electrodes is greatly facilitated by using an electrodes-bearer which is introduced through a very simple and classical surgical procedure. The indications for implanting depend on undiscussible criteria (total deafness, auditory response to electrical stimulation of the round window, patient's motivation). Clinical results consist of psychoaffective improvement and auditory possibilities. All patients are able to discriminate homosyllabic words in closed lists without lips reading, but the percentages of these performances greatly vary from one patient to the other. Some patients, generally suffering from acquired total deafness, are able to discriminate words or sentences without reference list and without help of lips reading. These results depend on the patient's socialization level, on the pre or post-lingual status of the deafness, on an eventual cochlear ossification, and on the value of several pre operative electro physiological data. Associated handicaps (autism, blindness, tetraplegia) are not contra indications and often represent supplementary reasons for implanting. The value of these post-operative results may be predicted owing to a series of electrical pre-operative tests and clinical data. Thus it is possible to determine the respective indications of multi and single channel cochlear implants. PMID- 3841456 TI - The UIA-KUL cochlear implant. Goals and status praesens. AB - The authors describe the characteristics and specific advantages of their 8 channel bipolar intrascalar stimulator, its main asset being flexibility. They emphasize the need for caution in the use of cochlear implants in children. PMID- 3841457 TI - Leuven and Antwerpen Universities Research Auditory prosthesis (LAURA). PMID- 3841458 TI - Status praesens: cochlear implant. UIA-KULeuven-Forelec. AB - The authors review some basic anatomy and physiology of the auditory system as an introduction to the principles of cochlear implantation. A detailed description of the UIA-KUL-Forelec implant (LAURA) is given. PMID- 3841459 TI - Scanning electron microscopical analysis of the acute and chronic effects of intra-cochlear electrode implantation. AB - Scanning electron microscopy was used to study the acute histopathological effects immediately after surgical implantation of a 2-channel electrode, and the chronic effects after long-term placement of the perscalar implant. This study with cats shows that an atraumatic implantation can be achieved and that the peripheral neural structures were retained although the hair cells degenerated and the spatial organization of the supporting cells was slightly changed. The population of hair cells outside the region of the implanted electrode was not affected. PMID- 3841461 TI - [Varicocele. Reports presented during a colloquium organized by the Belgian Society of Urology. Brussels, 2 March 1985]. PMID- 3841460 TI - Rapid effect of prednisolone on serum 1,25-dihydroxycholecalciferol levels in hypercalcemic sarcoidosis. AB - We have studied a hypercalcemic patient with sarcoidosis and advanced renal failure. Bone biopsy and urinary cAMP excretion indicated suppression of parathyroid function. 1,25(OH)2D levels were moderately elevated and dropped to low normal levels during prednisolone treatment. Discontinuation of prednisolone treatment caused deterioration of renal function and hypercalcemia, 1,25(OH)2D serum levels being within the normal range. Our data demonstrate the rapid speed at which prednisolone causes a drop in serum 1,25(OH)2D level. Since hypercalcemia was observed both during periods of hypercalciuria and normal serum 1,25(OH)2D levels, increased sensitivity to active vitamin D seems likely. There was no significant correlation between 25(OH)D, 24,25(OH)2D or 25,26(OH)2D. Furthermore there was no correlation between any of these three metabolites and either 1,25(OH)2D or serum calcium. PMID- 3841462 TI - [A case of hernia uteri inguinalis with a left crossed ectopic testis]. AB - A 70-year-old man with the complaint of dysuria and painless swelling of the right scrotal sac and inguinal region was operated on for suspected right inguinal hernia. The hernia sac contained two testis and immature uterine tissue, which were pathognomonic of left crossed ectopic testis complicated by hernia uteri inguinalis. The chromosomes were normal. Statistics on 57 similar cases indicated that this was the eldest of all such patients reported in Japan; since he had two children, he seems to have been fertile. PMID- 3841463 TI - Comparison of therapeutic usefulness of vitamin D3 analogs on osteoporosis caused by ovariectomy in rats. AB - Ovariectomy induced a remarkable reduction in the ash content of the femur and histologically a disappearance of the trabecular bone in tibial metaphysis accompanying the decrease of serum calcium level and urinary calcium excretion in young immature rats. Treatment with 1 alpha-hydroxyvitamin D3, 1,25 dihydroxyvitamin D3 and 1,24R-dihydroxyvitamin D3 for 3 months from 7 to 9 months after the ovariectomy dose-dependently increased serum and urinary calcium, bone ash, and histologically partly improved a loss of trabeculae. The 24R,25 dihydroxyvitamin D3 doses, on the other hand, produced no therapeutic effect on the bone disorders in ovariectomized rats, except for the slight effect on the increasing activity of serum calcium. PMID- 3841464 TI - Breast feeding, cow milk feeding, and allergy. AB - Information about every 10th child aged 14 to 38 months was collected by means of a questionnaire in Turku, Finland in March, 1983. This paper reports on the occurrence of allergy in relation to the duration of breast feeding and to the age of the child when cow milk feeding was started. The average duration of breast feeding was 5.7 months and the average age at the introduction of cow milk based products was 4.3 months. Allergy was reported in family members of 47.6% of the children. In 30.3% the child himself was reported allergic. The occurrence of allergy was unaffected by the duration of breast feeding and the age at introduction of cow milk feeding. PMID- 3841465 TI - Quantitation of thin-layer chromatograms with an Apple II computer-based videodensitometer. AB - An inexpensive, high-speed densitometer made from an Apple II computer, a black and-white video camera, and an image digitizing board is described. By supplementing the computer with a very fast coprocessor, one can obtain a measurement of a typical thin-layer spot in 30-40 s. Only minimal electronic expertise is required for assembling the system from the commercially available components. Coefficients of variation for multiple readings of a single 500-ng spot of charred lipid were about 0.5%. For lipid spots weighing 250 to 2000 ng, a second-order relationship between weight and density reading was obtained with a correlation coefficient of 0.998. PMID- 3841466 TI - Quantitative determination of the lipid peroxidation product 4-hydroxynonenal by high-performance liquid chromatography. AB - 4-Hydroxynonenal is a product formed in tissue and tissue fractions from polyunsaturated membrane lipids through a free radical-induced lipid peroxidation process. The biological properties of this aldehyde have been studied in many respects. This article describes for the first time a sensitive and reproducible method for quantitative analysis of 4-hydroxynonenal in biological samples as well as in lipid-containing foodstuffs. The method involves extraction of the aldehyde by dichloromethane from cells or microsomes trapped on an Extrelut column. Oils and foodstuffs are extracted with excess water. After additional sample cleanup by solid-phase extraction on a disposable octadecyl silica gel (ODS) extraction column, the sample is analyzed by high-performance liquid chromatography using an ODS column and methanol/water 65/35 (v/v) or acetonitrile/water 40/60 (v/v) as eluant; the detection wavelength is 220 nm. The method developed has a high precision with coefficients of variation of 1.4% (microsomes) to 3.5% (olive oil). The recovery depends on the sample type and lies between 45% (control microsomes) and 96% (solution of hydroxynonenal in water). The method has been used for the determination of 4-hydroxynonenal in microsomes, platelets, and various foodstuffs. PMID- 3841467 TI - Computation of physiochemical parameters, inter alia, pH, in complex (bio)chemical systems. AB - Generic equations and algorithms are derived to compute, in complex (bio)chemical systems at equilibrium, the following physicochemical parameters: pH (or the concentration of any chemical species), partitions between acid and base forms, global charge, molar mean charges, ionic strength, and molar mean contributions to ionic strength. The model only requires the knowledge of existing thermodynamic constants and of the composition of the system in chemical species as the sum of the different forms other than the species under examination. It takes ionic strength aspects into consideration. Several innovations simplify the computation process: use of polyacidity constants, generalized expression of molar parameters, computation of global parameters from molar mean contributions, simplified corrections for activity, and easy iterative process for pH determination. The model always elicits a unique equilibrium state, namely, it always yields a unique pH value. Computed values always agreed with experimental measurements, thereby validating the model. Digital computer programs were prepared to use the proposed algorithms, which are also a very simple and easy way, compared to the available mathematical descriptions, to solve the problem "manually" without computer facilities. PMID- 3841468 TI - A rapid, inexpensive, quantitative, general-purpose densitometer and its application to one-dimensional gel electrophoretograms. AB - We describe the construction of a densitometer based on a TV camera linked to an IBM personal computer (PC) using commercially available components. We discuss some of the problems of accurate quantitative densitometry using low-cost video systems, and describe the manner in which absolute optical density values may be recorded. We describe a digital analysis routine designed to quantitate unresolved bands on noisy one-dimensional electrophoretograms. PMID- 3841469 TI - Infant pulmonary vascular model based on the pulmonary input impedance spectrum. AB - A mathematical model of the infant pulmonary vascular system was developed by altering an adult model to fit the hemodynamic properties of an infant pulmonary vascular bed. The model was designed for infants between the ages of 1 and 2 years with both normal and high mean pulmonary artery pressures (PAPs). The resulting infant model was evaluated on the basis of the computed parameters of cumulative length, volume and resistance of the pulmonary vascular bed, as well as on the basis of comparisons of the model spectra with actual computed spectra for ventricular septal defect patients who were of comparable age, had comparable mean PAPs and were not diagnosed as having pulmonary vascular disease. It was observed that the first minimum and first maximum in the modulus of the input impedance spectrum of the infant model for both normal and high mean PAPs occurred at a higher frequency than in the adult model. These observations led to the conclusion that there is a natural, age-related shift in the input impedance spectrum of infants which is not necessarily indicative of pulmonary impairment. PMID- 3841470 TI - [Bullous form of malignant histiocytosis]. PMID- 3841471 TI - [Goltz syndrome with facial clefts. Etiopathogenetic considerations. Apropos of a new case]. PMID- 3841472 TI - Anaerobic degradation of veratrylglycerol-beta-guaiacyl ether and guaiacoxyacetic acid by mixed rumen bacteria. AB - Veratrylglycerol-beta-guaiacyl ether (0.2 g/liter), a lignin model compound, was found to be degraded by mixed rumen bacteria in a yeast extract medium under strictly anaerobic conditions to the extent of 19% within 24 h. Guaiacoxyacetic acid, 2-(o-methoxyphenoxy)ethanol, vanillic acid, and vanillin were detected as degradation products of veratrylglycerol-beta-guaiacyl ether by thin-layer chromatography, gas chromatography, and gas chromatography-mass spectrometry. Guaiacoxyacetic acid (0.25 g/liter), when added into the medium as a substrate, was entirely degraded within 36 h, resulting in the formation of phenoxyacetic acid, guaiacol, and phenol. These results suggest that the beta-arylether bond, an important intermonomer linkage in lignin, can be cleaved completely by these rumen anaerobes. PMID- 3841473 TI - Early congenital syphilis still occurs. AB - Seven cases of early congenital syphilis have been recorded in the past 10 years in the Mersey Regional Health Authority. Antenatal serology was initially negative in five mothers, who were either incubating or acquired the infection later, and treatment had probably failed in two women given erythromycin for syphilis during pregnancy. Serology should be repeated later in pregnancy in those at high risk. Social factors that define this group include women who book for antenatal care late in pregnancy, have a past history of sexually transmitted disease, and have multiple consorts. Clinical signs in the infant such as failure to thrive, hepatosplenomegaly, symmetrical rash, rhinitis, and osteochondritis should alert the clinician to the possibility of congenital syphilis. Adequate management of mother and baby requires close liaison between the genitourinary physician, microbiologist, obstetrician, and paediatrician. Penicillin remains the treatment of choice. PMID- 3841474 TI - [Ovine coccidiosis and its treatment under conditions of a livestock market in Senegal]. AB - Three lots of 1 to 2 years old sheep are considered: the first is treated by ivermectin subcutaneous (IVOMEC ND), the second by chloroquin per os (NIVAQUINE) and the third is a control one. In the lot treated by chloroquin, 76.92% of sheep show a significant decrease of the EPG, seven days after the treatment. In the lot treated by ivermectin no significant decrease of the EPG is observed after the treatment. However in 50% of these sheep, the number of oocysts in the faeces decreases and their health is improved. PMID- 3841475 TI - On the etiology of congenital malformation of the meniscus. AB - In order to explain the occurrence of malformed meniscus in man, dissections were carried out in various vertebrates; they revealed that menisci shaped like a plate, disc, or ring are physiological components of the knee joint in several vertebrates. Microscopic examinations of tissue sections through the knee joint of human embryos revealed that the meniscus develops from an intermediate mesodermal blastema, which has the shape of a thick plate in the early embryonic period. The occurrence of a malformed meniscus in man may be explained by persistence of a very early embryonic stage and also possibly by reversal to a phylogenetic shape. PMID- 3841476 TI - Effects of cadmium treatment on selenium-dependent and selenium-independent glutathione peroxidase activities and lipid peroxidation in the kidney and liver of rats maintained on various levels of dietary selenium. AB - Rats fed a basal, low-selenium diet, or this diet supplemented with 0.1 ppm and 1.0 ppm selenium and treated with cadmium, showed significant reductions in the activity of the selenoenzyme glutathione peroxidase in kidney and liver. Cadmium treatment resulted in a significant increase in the activity of selenium independent glutathione peroxidase activity in the liver of selenium-supplemented rats. Selenium-independent glutathione peroxidase activity was significantly reduced in the kidney of rats fed the basal low-selenium diet. There was no significant increase in lipid peroxidation in any of the groups studied. Cadmium concentrations in the kidney and liver of these animals ranged from about 250 to 700 micrograms Cd/g tissue, dry weight. PMID- 3841477 TI - Electrophysiologic changes in peripheral nerve following repeated exposure to organophosphorus agents. AB - The purpose of this study was to examine the electrophysiologic changes which occur following repeated exposure to potent organophosphorus agents. The results show that DFP and soman each initially increase rat sciatic nerve conduction and reduce refractoriness. Continued exposure had a diminished effect with nerve excitability eventually returning to control. During recovery, the nerve membrane responsiveness to potassium-induced depolarization significantly changed in a manner which would indicate either decreased Na, K-ATPase activity or decreased potassium ion transmembrane flux. The data suggest that compensatory changes occur in rat nerve in response to organophosphorus exposure, and further, that these compensatory changes involve alteration in membrane ion fluxes. PMID- 3841478 TI - [Effect of different factors on the sex ratio in laboratory mouse embryogenesis]. AB - Influence of two factors on distribution of embryos according to the sex is considered: genetic peculiarities of inbred mice and hybrid mice, as well as spontaneous embryonal death of the embryos of different sex. The work has been performed on C3H, CBA, C57BL strains of mice and on hybrid mice of CBA/C57BL and ICR/In(X)1H strains. The sex ratio in the mice studied is balanced. In the CBA/C57BL hybrid mice a certain shift in the sex ratio is noted towards female embryos. In the offspring of the ICR/In(X)1H hybrid mice the sex distribution of the embryos does not differ from the ratio 1:1. The results of the investigation confirm the opinion of the literature that genetic peculiarities of the inbred mice do not essentially influence the sex ratio in their offspring, while fluctuation in the sex ratio in the hybrid mice are evidently connected, in a greater degree, with their genetic peculiarities. As demonstrates the analysis of the sex relation and the embryonal death, there is no selective death in the embryos of any sex during embryogenesis in the mice investigated. PMID- 3841479 TI - Biosynthesis and processing of legumin-like storage proteins in Lupinus angustifolius (lupin). AB - Synthesis, secretion and post-translational proteolysis of the storage proteins in cotyledons of Lupinus angustifolius L. (lupin) have been examined in vivo and in vitro by using a combination of pulse-chase experiments with [3H]- or [35S] labelled amino acids, subcellular fractionation and cell-free translation from poly(A)+ (polyadenylylated) RNA or membrane-bound polyribosomes. Related polypeptides were identified by immunoprecipitation, separation on sodium dodecyl sulphate/polyacrylamide gels and fluorography. The synthesis and processing of two proteins were compared. Conglutin alpha, the 11 S protein, was found as a family of precursor polypeptides of Mr 68000-88000 when translated from poly(A)+ RNA under conditions where signal segments were not cleaved, and Mr 64000-85000 both when sequestered into the endoplasmic reticulum and when accumulated in the protein bodies. Pulse-chase labelling showed that cotyledons from early stages of development were completely incapable of further proteolysis of these precursors. Nevertheless, in the same juvenile cotyledons, the precursors of the minor storage protein conglutin gamma, two polypeptides with Mr 50000-51000, were proteolytically cleaved to mature subunits of Mr 32000 and 17000 within 2 h. Further cleavage of the precursors of conglutin alpha into families of mature subunits of Mr 21000-24000 and 42000-62000 was detected in more mature cotyledons. A model is proposed which suggests that the mature subunits are produced by a single proteolytic cleavage of each of the three major precursors of conglutin alpha and also suggests that a close similarity exists between these subunits and those of other legumin-like proteins. The enzyme responsible for this cleavage, which appears at a specific stage in the middle of cotyledonary development, seems to be an integral part of the programmed developmental sequence in these pods. PMID- 3841480 TI - [Aminooxypropylamine--an effective inhibitor of ornithine decarboxylase in vitro and in vivo]. AB - Hydroxylamine-containing analogues of putrescine and cadaverine have been found effective in inhibiting the mouse liver ornithine decarboxylase, the best among synthesized were 1-aminooxy-3-aminopropane (I50 2.10(-8) M) and 1-aminooxy-4 aminobutane (I50 2.10(-7) M). The inhibitory effect of these substances on the mouse liver ornithine-transaminase and S-adenosylmethionine decarboxylase from E. coli was displayed at concentrations higher by several orders of magnitude, that demonstrated the specificity of the compounds of this type. 1-Aminooxy-3 aminopropane in experiments in vivo suppressed the ornithine decarboxylase activity in mouse liver at 16 mg/kg by 75%, the toxic effect being insignificant. PMID- 3841481 TI - Molecular cloning of human LDL apolipoprotein B cDNA. Evidence for more than one gene per haploid genome. AB - We have isolated an apolipoprotein B (apo B) clone (pXB1) from a human liver cDNA expression library, by immunoselection with a polyclonal antibody to human low density lipoprotein. pXB1 was used to isolate 3 clones (pB2, pB3 and pB4), containing cDNA inserts spanning a region of 3.75 kbp, from a second human liver cDNA library. We report the sequence of 1359 nucleotides at the 3' end of the pB4 cDNA insert and the amino acids encoded by this sequence. The cDNA inserts of pBX1 and pB2 overlapped the sequenced portion of pB4. pB2 contained an EcoR1 restriction site (resulting in a Glu-Lys replacement) which is not present in pB3 or pB4 and pB3 contained an MspI site not present in pB2 or pB4. Since all 3 clones were derived from the mRNA of a single human liver, we suggest that the human haploid genome contains more than one functional apo B gene. Labelled probes spanning almost the whole of the pB4 cDNA insert hybridized with RNA from human liver and small intestine, showing that the apo B mRNAs from these two tissues have nucleotide sequences in common. The nucleotide sequence in human liver apo B mRNA is probably longer than 12 kb, showing that the MW of monomeric apo B is at least 350kd. Clone pB4 hybridized with mRNA of similar length in rabbit liver and small intestine. These results raise the possibility that the low MW apo B synthesized in the intestine (B-48) and the high MW apo B synthesized in the liver (B-100) are translated from the same mRNA. The expression products of fragments of pB4 cloned into an expression vector were blotted with monoclonal antibodies to human LDL. The results suggest that the cDNA insert in pB4 encodes a part of apo B common to B-48 and B-100 and a region close to the recognition site for the LDL receptor. PMID- 3841482 TI - Morphometric analytical evaluators of lymphoid populations in nonneoplastic lymph nodes. AB - A morphometric analysis using an Apple II microcomputer and shape analytical morphometry (SAM) software was performed of the nuclear shape in the lymphoid population of normal (nonneoplastic) lymph nodes to provide baseline parameters useful for distinguishing between different subtypes of lymphomas. Fourier harmonic analysis and two indices, a contour asymmetric evaluator (CAE) and a shape asymmetric evaluator (SAE), are proposed as non-dimensional shape parameters. Results obtained with the CAE and SAE indices indicate that they represent sensitive shape descriptors able to reveal even subtle irregularities of nuclear outline. With these parameters, centrocyte nuclei were easily differentiated from those of all other lymphoid cells while an interesting close relationship was found between lymphocytes and centroblasts. Lymphocyte nuclear shape was shown to be less regular than generally reported, suggesting the existence of subtle differences between stimulated and unstimulated nuclei. Immunoblast nuclei were shown to have the most regular shapes. PMID- 3841483 TI - Multimodal frequency distribution analysis of peripheral nerves. AB - In morphometric studies of peripheral nerves, the statistical analysis of such data as axon diameters is complicated by the presence of multimodal distributions. Nerve fiber diameters, for example, cannot be analyzed by classical parametric tests, and such descriptive statistics as mean or variance lose much of their usefulness. The recent development of stochastic catastrophe models offers a new parametric tool with which to describe multimodal distributions. This paper describes our development of a PASCAL computer program that permitted the modelling, comparison and segmentation of multimodal distributions. The method is based on a description of the multimodal frequency distributions by probability density functions of the canonical exponential family. PMID- 3841484 TI - Discrimination between precancerous and cancerous lesions of the uterine cervix by DNA measurements on tissue sections. AB - Morphologically typical uterine cervical biopsies were separated into normal cervices, condylomas and cervical intraepithelial neoplasias (CIN) grades I, II and III. At least 100 nuclei per lesion were measured on 4 micron Feulgen-stained sections using a Zeiss microspectrophotometer, with a variant of the plug method used to compute the nuclear DNA content. DNA distribution histograms were then decomposed into subsets of diploid, tetraploid, octoploid and aneuploid cells. The decomposition, which assumed a log-normal model of polydiploidy distribution, led to the identification of six indices: (1) the percentage of diploid cells, (2) the percentage of tetraploid cells, (3) the percentage of octoploid cells, (4) the percentage of aneuploid cells with DNA contents less than tetraploidy, (5) the percentage of aneuploid cells with DNA contents between tetraploidy and octaploidy and (6) the percentage of aneuploid cells with DNA contents greater than octoploidy. These indices, along with the mean nuclear radius, the 5c exceeding rate and the 2c deviation index, generated a nine-dimensional space. Two methods of discriminant analysis on this space showed discriminating powers of 78.22% and 87.13%, respectively, as compared to the original diagnoses. The most discriminating variable in both analyses appeared to be the percentage of octoploid cells. PMID- 3841485 TI - [Comparison between imidazole-2-hydroxybenzoate and prindinole mesylate in the treatment of post-traumatic muscular pain]. PMID- 3841487 TI - [Imidazole-2-hydroxybenzoate. An anti-inflammatory agent with selective action]. PMID- 3841486 TI - [Comparison between imidazole-2-hydroxybenzoate and noramidopyrine in the treatment of postoperative pain in orthopedic patients]. PMID- 3841488 TI - [Antiphlogistic therapy: new perspectives]. PMID- 3841489 TI - [Comparison between imidazole-2-hydroxybenzoate and naproxen in phlogistic diseases of gynecologic interest]. PMID- 3841490 TI - [The action of imidazole-2-hydroxybenzoate in urologic inflammatory processes. Comparison with oxyphenbutazone]. PMID- 3841491 TI - [The use of imidazole-2-hydroxybenzoate and piroxicam in the treatment of arthropathies of the spine and hip]. PMID- 3841493 TI - [Imidazole-2-hydroxybenzoate in the treatment of cervical and lumbar osteoarthrosis]. PMID- 3841492 TI - [Treatment of rheumatoid arthritis with imidazole-2-hydroxybenzoate or naproxen: study of the efficacy and tolerability]. PMID- 3841494 TI - Dangers of the vagina. AB - Beliefs, myths, and literary expressions of men's fear of female genitals are reviewed. Both clinical evidence and folklore provide evidence that men imagine female genitals not only as a source of pleasure and attraction, but also as a source of danger in a very physical sense. The vagina dentata myth has many versions, including some modern ones, and its message is always the same: an awesome danger emanating from a woman's body. The prevalence of such feelings in folklore and in literature is noted. PMID- 3841495 TI - High-resolution solid-state 13C NMR study of free and metal-complexed macrocyclic antibiotic ionophores valinomycin, nonactin, and tetranactin: conformational elucidation in solid and solution by conformation-dependent 13C chemical shifts. AB - We recorded high-resolution 13C NMR spectra of the macrocyclic antibiotic ionophores valinomycin, nonactin, and tetranactin in the solid state by the cross polarization-magic angle spinning (CP-MAS) method, in order to gain insight into the use of conformation-dependent 13C chemical shifts as a convenient means to delineate a conformational change induced by metal ion complexation. The 13C peak splittings in the solid state are consistent with the symmetry properties of the ionophores as revealed by X-ray diffraction: C2 symmetry in free tetranactin and S4 or S6 symmetry for a variety of metal complexes of nonactin and tetranactin or the K+ complex of valinomycin, respectively. Interestingly, many of the 13C NMR peaks of carbons in the skeletal backbones were significantly displaced (up to 8 ppm). The displacements of the peaks were explained by a conformational change as characterized by variations of torsion angles. Accordingly, we were able to obtain conformational features of Na+ and Cs+ complexes of valinomycin, for which X-ray diffraction data are unavailable, on the basis of the displacements of the 13C NMR peaks. Further, we discuss conformational features of these complexes in chloroform solution, with reference to those observed in the solid state. PMID- 3841496 TI - Interaction of calmodulin and a calmodulin-binding peptide from myosin light chain kinase: major spectral changes in both occur as the result of complex formation. AB - Many different enzymes are activated by direct interaction with calmodulin; this interaction is thought to occur through a distinct calmodulin-binding domain in each of these enzymes. We have recently reported the sequence of a 27-residue peptide (denoted M13), derived from skeletal muscle myosin light chain kinase (MLCK), that exhibits the properties expected of a calmodulin-binding domain [Blumenthal, D. K., Takio, K., Edelman, A. M., Charbonneau, H., Titani, K., Walsh, K. A., & Krebs, E. G. (1985) Proc. Natl. Acad. Sci. U.S.A. 82, 3187-3191]. The interaction between chemically synthesized M13 peptide and calmodulin has been studied by circular dichroism (CD) and proton nuclear magnetic resonance (NMR) spectroscopy. In the presence of Ca2+, the observed ellipticity of an equimolar mixture of M13 and calmodulin is much greater than the sum of the ellipticities of the two isolated proteins. In the absence of Ca2+, the measured ellipticity of the mixture is approximately the sum of the two components. Addition of the peptide to calmodulin causes dramatic changes in the proton NMR spectrum; at a 1:1 molar ratio, no evidence of either free peptide or free calmodulin is observed. Moreover, these data demonstrate that a unique species of the M13-calmodulin complex is formed, indicating that the peptide binds to calmodulin in only one way. The many resonances affected by M13 binding include residues in both halves of the calmodulin molecule. The observed CD and NMR effects suggest that secondary and tertiary conformational changes occur both in M13 and in calmodulin upon complex formation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841497 TI - Fast approximations for accessible surface area and molecular volume of protein segments. PMID- 3841498 TI - The NIH Consensus Development Conference on Adjuvant Chemotherapy for Breast Cancer--a commentary. PMID- 3841499 TI - [The effect of calcium chloride on the ulcerogenic effect of ketophenylbutazone in relation to the calcium content of the gastric wall]. PMID- 3841500 TI - [Respiratory depression caused by intrathecal morphine (role of renal failure)]. PMID- 3841501 TI - Tastes associated with parenteral chemotherapy for breast cancer. AB - We employed a structured interview to retrospectively study tastes and vomiting associated with the parenteral components of cyclophosphamide, methotrexate, and 5-FU in 45 patients with stage II-IV breast cancer. Sixteen patients (36%) reported tastes which generally occurred in each cycle within 30 minutes of parenteral drug administration, lasted less than or equal to 1 hour, and were bitter. Five patients recalled that tastes seemed to produce vomiting. Tasting was significantly associated with postchemotherapy (P less than 0.01) but not anticipatory vomiting. Employing logistic regression techniques, tasting did not significantly improve prediction of anticipatory vomiting by postchemotherapy vomiting. Tastes may be produced by the action of plasma or salivary cyclophosphamide, methotrexate, and 5-FU on taste buds. While tastes might cause some vomiting, they are not necessary for it. Because this was a retrospective study with a small sample, these findings require confirmation. PMID- 3841502 TI - Synthesis of the metabolites and degradation products of 2-amino-7-isopropyl-5 oxo-5H-[1]benzopyrano[2,3-b]pyridine-3- carboxylic acid (Amoxanox). PMID- 3841503 TI - Protective effects of a new LTD4 antagonist (LY-171883) in traumatic shock. AB - We studied the effects of a selective antagonist of LTD4 (LY-171883, 2 and 4 mg/kg) in traumatic shock. Anesthetized rats subjected to Noble-Collip drum trauma developed a shock state characterized by a survival time of 1.7 +/- 0.3 h, a sixfold increase in plasma cathepsin D activity, and a fourfold increase in plasma myocardial depressant factor (MDF) activity. Administration of LY-171883 did not significantly inhibit the release of the lysosomal hydrolase cathepsin D during traumatic shock. However, LY-171883 (2 mg/kg) significantly attenuated the accumulation of MDF activity in the plasma (51 +/- 2 vs 37 +/- 3 U/ml), vehicle vs drug, respectively, and significantly (p less than 0.02) prolonged survival time to 2.7 +/- 0.2 h. Administration of the antagonist at a dose of 4 mg/kg further improved survival time (3.4 +/- 0.6 h, p less than 0.01) and additionally blunted circulating MDF activities compared to traumatized rats given only the vehicle. LY-171883 was found to antagonize the bronchoconstrictor effect of LTD4 given intravenously to anesthetized rats as well as the coronary vasoconstrictor actions of LTD4 in vitro. The beneficial effect of LTD4 antagonism in the present study is consistent with the concept that peptide leukotrienes are important mediators of the pathogenesis of traumatic shock. PMID- 3841505 TI - Computerized management in real time in nephrology. A departmental structure. PMID- 3841504 TI - Hydrocephalus following iophendylate injection myelography with spontaneous resolution: case report and review. AB - A 62-year-old patient developed severe adhesive spinal arachnoiditis and hydrocephalus with papilledema following iophendylate injection myelography. Papilledema and hydrocephalus resolved spontaneously. The possible mechanism for hydrocephalus is discussed and the literature reviewed. PMID- 3841506 TI - The nucleotide sequence of Syrian hamster HMG-CoA reductase cDNA. AB - We have determined the nucleotide sequence of Syrian hamster 3-hydroxy-3 methylglutaryl coenzyme A (HMG-CoA) reductase cDNA. Comparison of the deduced amino acid sequence with the homologous sequence from Chinese hamster reveals highly conserved domains which appear to have functional significance. The amino terminal membrane domain of HMG-CoA reductase exhibits 100% homology. This region may span the endoplasmic reticulum seven times and is thought to be involved in the sterol-regulated degradation of HMG-CoA reductase (Gil et al., 1985; Liscum et al., 1985). The carboxyl terminus contains the active site of the enzyme and exhibits greater than 99% homology. A central region linking these two conserved domains exhibits greater divergence. In this region there is only 85% homology between the two hamster lines, suggesting that this linkage domain has a less stringent structural requirement. PMID- 3841507 TI - [Metastatic cancer of the heart--a clinicopathologic study of 68 cases]. AB - The study of 68 autopsy cases of metastatic cancer of the heart is reported. There were 41 male and 27 female. The age was from 26-89 years. The primary neoplasms are as follows: carcinoma of lung (26.5%), lymphosarcoma (14.7%), leukemia (11.8%), malignant melanoma (8.8%), carcinoma of breast (7.4%) and of kidney (7.4%). The laterality ratio of the heart was; right: left is 1:2. The myocardium was involved in 50 cases, the pericardium, 30 cases and the endocardium, 16 cases. 19 cases (27.9%) had symptoms referable to the metastatic disease in the heart. None of the patient was correctly diagnosed before death as to the metastatic lesion in the heart. 88.2% (60/68) of cases died of general metastases, in which 14 succumbed directly from metastatic cancer of the heart. PMID- 3841508 TI - [Primary gastric Hodgkin's disease]. AB - Three cases of primary gastric Hodgkin's disease confirmed by pathology are reported. The primary Hodgkin's disease of the stomach has four characteristics; The lesions greater than 5 cm in diameter; The lesions extend separately in more than 2 areas of the stomach; The lesions appear as ulcers; coexistence of various lesions: nodules, ulcers, erosions and thickened mucosal folds. The chief treatment for this disease is subtotal gastrectomy Billroth II, followed by chemotherapy or radiotherapy. PMID- 3841509 TI - [Lymphocyte activation associated with intercellular lipid transport]. PMID- 3841510 TI - A microcomputer based neurophysiological measurement system. PMID- 3841512 TI - Nucleotide sequence of the L1 ribosomal protein gene of Xenopus laevis: remarkable sequence homology among introns. AB - Ribosomal protein L1 is encoded by two genes in Xenopus laevis. The comparison of two cDNA sequences shows that the two L1 gene copies (L1a and L1b) have diverged in many silent sites and very few substitution sites; moreover a small duplication occurred at the very end of the coding region of the L1b gene which thus codes for a product five amino acids longer than that coded by L1a. Quantitatively the divergence between the two L1 genes confirms that a whole genome duplication took place in Xenopus laevis approximately 30 million years ago. A genomic fragment containing one of the two L1 gene copies (L1a), with its nine introns and flanking regions, has been completely sequenced. The 5' end of this gene has been mapped within a 20-pyridimine stretch as already found for other vertebrate ribosomal protein genes. Four of the nine introns have a 60 nucleotide sequence with 80% homology; within this region some boxes, one of which is 16 nucleotides long, are 100% homologous among the four introns. This feature of L1a gene introns is interesting since we have previously shown that the activity of this gene is regulated at a post-transcriptional level and it involves the block of the normal splicing of some intron sequences. PMID- 3841513 TI - C-reactive protein and serum amyloid A levels in rickettsial spotted fever. PMID- 3841511 TI - Identification of a set of genes expressed during the G0/G1 transition of cultured mouse cells. AB - To identify previously undetected genes that may be involved in the transition from a resting state (G0) to a proliferative state (G1) of mammalian cells, we set out to isolate cDNA clones derived from mRNAs that appear in serum-stimulated cells in the absence of protein synthesis. A lambda cDNA library was prepared using poly(A)+ RNA from BALB/c 3T3 cells that had been brought to quiescence and subsequently stimulated with serum in the presence of cycloheximide. Approximately 50 000 recombinant phage plaques were screened, and 357 clones were isolated that hybridized to probes derived from stimulated-cell RNA but not to probes from resting-cell RNA. Cross hybridization analysis showed that four RNA sequence families account for approximately 90% of these clones. One of the clones hybridized to an actin probe; none hybridized to any of 13 oncogene probes tested. Five different RNAs that appear to be previously uncharacterized have been further analyzed. These RNAs accumulate and decay rapidly following stimulation by serum or purified growth factors, or by a tumor promoter, and they are superinduced by serum in the presence of cycloheximide. Three of the RNAs could be enriched by hybridization to cDNAs and translated in vitro, yielding proteins of approximately 43, 40 and 35 kd, respectively. PMID- 3841515 TI - Positive effect of bromocriptine treatment in Graves disease orbitopathy. AB - A successful bromocriptine treatment in Graves' disease orbitopathy was described. The mechanism of the positive effect of bromocriptine treatment in Graves' disease orbitopathy does not seem to be clear. Bromocriptine could influence orbitopathy in two ways: by lowering TSH secretion and by suppression of immunocompetent cells. PMID- 3841514 TI - Intrathecal morphine slows gastrointestinal transit in rats. AB - Intrathecal (i.th.) (by direct lumbar puncture) and intraperitoneal (i.p.) administration of morphine (30-100 micrograms/rat) caused a dose-related inhibition of gastrointestinal transit in the rat. Pretreatment with i.th. naloxone (5 micrograms at -5 min) reversed the effects of i.th., but not i.p., morphine. These results suggest that the spinal cord appears to be a target site for the inhibitory effects of morphine on gastrointestinal transit in the rat. PMID- 3841516 TI - Effect of calcium loading test on calcitonin and katacalcin levels before and after surgical removal of the ovaries. AB - Since the role of gonadal steroids and their interrelation with calcium regulating hormones is not clear, we performed a prospective study to investigate the effects of gonadectomy on the calcitonin (CT)/katacalcin (KT) system using 1 minute calcium infusion as a provocative test. Seventeen women aged 26-51 years awaiting abdominal hysterectomy with bilateral oophorectomy were included in the study and the same protocol was repeated 14 days after surgery. CT and KT concentrations were determined radioimmunologically after reverse phase extraction of serum, thus predominantly measuring monomeric CT and KT. The same protocol was repeated 14 days after surgery. Removal of the gonads in reproductive age did not alter basal or peak CT levels (9.7 +/- 0.8 vs. 8.9 +/- 0.7 ng/l and 13.4 +/- 1.6 vs. 12.7 +/- 1.2 ng/l) or KT levels (3.2 +/- 1.8 vs. 3.9 +/- 2.2 ng/l basal and 4.1 +/- 2.6 vs. 5.4 +/- 2.8 ng/l peak). Although not statistically different at any individual point, the shapes of the curves were significantly altered after surgery, indicating changes in the metabolism of CT and KT. These results support the hypothesis that CT and possibly KT play a role in the change of calcium metabolism coinciding with the oestrogen withdrawal at the menopause. PMID- 3841517 TI - Effect of age on rat liver heme and drug metabolism. AB - Old (24-months) rats have lower activities of hepatic delta-aminolevulinic synthase and the microsomal cytochrome P-450 monooxygenase activities- aminopyrine N-demethylase and aniline hydroxylase--as compared to young (2 months) animals. In contrast, the activity of the heme degradative enzyme, heme oxygenase, is higher in the old rats. Cytochrome P-450 and microsomal heme contents were maintained in the old. When inducibility and inhibition of these enzymes were studied, the old rats responded to the same degree as the young. These results indicate that the ability of the heme synthetic and degradative enzymes to respond to decreasing cellular heme levels is not significantly altered with age. The observations that there is a lower baseline activity of ALA synthase and good maintenance of microsomal heme and cytochrome P-450 content, in spite of elevated heme oxygenase activity in the old, suggest that, at least in the senescent rat, hepatic heme utilization and degradation are only loosely coupled to heme production. It appears, therefore, that alternate sources of heme for cytochrome P-450 are available in the old animals. Furthermore, it is suggested that the old rat has a baseline change in ALA-synthase, heme oxygenase, and cytochrome P-450 that may be overcome under the appropriate conditions. PMID- 3841518 TI - Pulmonary surfactant: its isolation, characterization and function. PMID- 3841519 TI - Physicochemical properties of surfactant lipids. PMID- 3841520 TI - Surfactant changes in experimentally induced disease. PMID- 3841521 TI - Isolated alveolar type II cells: a model for studies on the formation of surfactant dipalmitoylphosphatidylcholine. PMID- 3841522 TI - Respiratory distress syndrome and its treatment with surfactant. PMID- 3841523 TI - Nucleotide sequence of a cDNA clone for mouse pro alpha 1(I) collagen protein. AB - A cDNA clone for mouse pro alpha 1(I) collagen has been isolated and sequenced. A 1.8-kb PstI fragment spans nucleotides -1991 to -159 of the alpha-domain of mouse pro alpha 1(I) collagen. PMID- 3841524 TI - [Hashimoto's thyroiditis in systemic lupus erythematosus]. PMID- 3841525 TI - [Prototype of a program-controlled video campimeter]. PMID- 3841527 TI - How to computerize your practice. PMID- 3841526 TI - [Video specular microscopy and automatic morphometry of the corneal endothelium following extracapsular cataract extraction]. PMID- 3841528 TI - Iowa receives major grant for cochlear implant study. PMID- 3841529 TI - Chlamydia trachomatis. PMID- 3841530 TI - Is abnormal mRNA processing responsible for the low percentage of variants at residue 27 of the human alpha chain? PMID- 3841531 TI - Hb A2 Yokoshima, alpha(2)delta(2)25(B7)Gly----Asp, a new delta chain variant found in a Japanese family. PMID- 3841532 TI - A comparison of the nutrient intake of some Scotsmen with dietary recommendations. AB - During 1980 and 1982, 164 men aged 45-54 in North Edinburgh and West Fife participated in a 7-day individual weighed dietary survey. The mean energy intake was 11.2 MJ (2700 kcal), 38.1 per cent of which came from fat and 6.7 per cent from alcohol. The P:S ratio was 0.30 and the mean daily fibre intake 19.8 g. Saturated fatty acids accounted for 16.3 per cent of the energy and polyunsaturated fatty acid for 4.6 per cent. Oleic acid was the principal dietary fatty acid accounting for 32.4 per cent of fatty acids. The major polyunsaturated fatty acid was linoleic acid and contributed 3.5 per cent of energy. Cereal and cereal products were the principal source (30.8 per cent) of linoleic acid. Though this study was conducted prior to the publication of recent dietary recommendations, a small proportion of the men were achieving some of them but few would have met the recommendations in full. PMID- 3841533 TI - Asperlicin, a novel non-peptidal cholecystokinin antagonist from Aspergillus alliaceus. Structure elucidation. AB - Asperlicin (1, C31H29N5O4) is a novel cholecystokinin antagonist produced by Aspergillus alliaceus. The structure of asperlicin has been determined by NMR and mass spectral analysis, and X-ray crystallography. PMID- 3841534 TI - Abierixin, a new polyether antibiotic. Production, structural determination and biological activities. AB - A new polyether antibiotic, abierixin, was found in the mycelium of a culture broth of nigericin-producing Streptomyces albus NRRL B-1865. Abierixin was extracted with organic solvents and purified by column chromatography and HPLC. The structure of abierixin was determined by FAB/MS/MS and CI/MS/MS and 1H and 13C NMR spectrometries. Abierixin exhibited weak antimicrobial and ionophorous activities, low toxicity but good anticoccidial activity. Nigericin biosynthesis from abierixin is discussed. PMID- 3841535 TI - Isolation and characterization of terpentecin, a new antitumor antibiotic. AB - A new antitumor antibiotic, terpentecin was isolated from the culture broth of strain MF730-N6. Strain MF730-N6, isolated from soil, was found to belong to the genus Kitasatosporia. The antibiotic was extracted with chloroform, purified by column chromatography using silica gel and Diaion HP-20 successively, and finally purified by high performance reverse-phase thin layer chromatography. The molecular formula of terpentecin was determined to be C20H28O6 (molecular weight, 364). The antibiotic inhibited the growth of Gram-positive and Gram-negative bacteria, and prolonged the survival period of mice bearing leukemia L-1210, P388 and Ehrlich ascites carcinoma. PMID- 3841536 TI - Structures of trienomycins A, B and C, novel cytocidal ansamycin antibiotics. AB - The structures of novel antibiotics, trienomycins A, B and C produced by Streptomyces sp. No. 83-16, have been determined on the basis of their spectroscopical and chemical properties. Trienomycins are unique ansamycin antibiotics with a triene and an 1,3,5-trisubstituted benzene moieties in the molecule. The antibiotics possess potent cytocidal activity against HeLa S3 cells at concentrations of 0.005 (trienomycin A), 0.1 (trienomycin C) and 0.2 micrograms/ml (trienomycin B) (IC50 value), respectively. However, trienomycins showed no antimicrobial activity against the bacteria, fungi and yeasts examined with the exception of weak activity versus Piricularia oryzae at a concentration of 1,000 micrograms/ml. PMID- 3841537 TI - Synthesis and biological activity of (7S)-O-epoxyalkyl derivatives of daunomycinone. AB - Synthesis and antibacterial activity of a number of 7-O-epoxyalkyl derivatives of daunomycinone prepared from 7-O-alkenyl derivatives of daunomycinone are described along with their inhibitory effect on leukemia P 388 cells. PMID- 3841538 TI - Rustmicin, a new macrolide antibiotic active against wheat stem rust fungus. PMID- 3841539 TI - Neorustmicin A, a new macrolide antibiotic active against wheat stem rust fungus. PMID- 3841540 TI - The structure of a new antibiotic, terpentecin. PMID- 3841541 TI - In vitro mutagenesis of infectious viroid cDNA clone. AB - Previously we constructed an infectious hop stunt viroid (HSV) cDNA clone, PHS P2P, which carries two copies of full-length HSV cDNA tandemly and generates HSV RNA when it is inoculated into cucumber plants. The in vitro transcript of the cDNA clone was also infectious. To investigate the essential regions for infectivity of HSV, we introduced a short deletion or insertion into the HSV sequence of pHS-P2P using restriction sites (XhoI site for pHI-X1, PvuI site for pHI-P1, and BamHI site for pHI-B1) and assayed the infectivities of these mutagenized clones. None of these mutagenized clones and their transcripts were infectious under the conditions used. Simultaneous inoculation of two or three of non-infectious mutagenized clones or the transcripts from them did not restore the infectivity. PMID- 3841542 TI - Specific inhibition of urease by N-acylphosphoric triamides. AB - Benzoyl- and isopentenoyl phosphoric triamides (BPA and IPA) strongly inhibited urease activities from jack bean, soybean, watermelon seed, Proteus mirabilis, P. rettgeri, P. vulgaris, Mycobacterium smegmatis, and Ureaplasma urealyticum. Their I50 values (the final concentration causing 50% inhibition), independent of enzyme source, were 2-21 nM, which are about 1,000-fold lower than that of caprylohydroxamic acid, one of the most potent urease inhibitors. ATP-urea amidolyase activity was inhibited 50% by BPA at a higher concentration of 0.28 mM, but was not affected by IPA even at 1.3 mM. Thirteen kinds of hydrolases (trypsin, chymotrypsin, thermolysin, leucine aminopeptidase, papain, lipase, alpha-amylase, glucuronidase, asparaginase, arylsulfatase, alkaline phosphatase, acid phosphatase, and true cholinesterase), two oxidoreductases (catalase and alcohol dehydrogenase), three transferases (glutamic-oxaloacetic aminotransferase, gamma-glutamyl transpeptidase, and arylsulfotransferase) and two kinases (pyruvate kinase and creatine kinase) were not affected at all even at 1 mM BPA and IPA. Exceptionally, pseudo-cholinesterase from human serum was inhibited by BPA and IPA, whose I50 values were 70 nM and 10 muM, respectively, using acetylthiocholine as a substrate. These values increased to 0.55 muM and 54 muM, respectively, when acetylcholine was used as a substrate. These results show that N-acylphosphoric triamides potently and specifically inhibit urease activity at concentrations of nM order. PMID- 3841543 TI - Cell hybridization and cell agglutination. I. Enhancement of cell hybridization by lectins. AB - A great increase in hybridization frequency of cultured rodent cells was obtained when conventional cell fusion using 50% polyethylene glycol (PEG) was combined with a cell agglutination produced by plant lectins. The rate of appearance of hybrid colonies was found to be correlated with the extent of cell agglutination by lectin, as well as with cell fusion induced by subsequent PEG treatment. Phytohemagglutinin (PHA), wheat germ agglutinin, Wistaria floribunda agglutinin and concanavalin A were all active; the most effective was PHA. When parental cells in a monolayer were treated with PHA followed by PEG, the resulting hybridization frequency was very low because of markedly decreased viability, whereas the same cells in suspension yielded hybrid colonies at a higher rate. These results suggest that the enhancement of hybridization by PHA/PEG treatment was brought about by the ability of lectin to agglutinate cells. PMID- 3841544 TI - Aftercataracts. AB - A Soemmering ring cataract with opacified lens capsule is presented as a representative case report of aftercataract occurring secondary to perforating trauma of the anterior lens capsule. The various types and causes of aftercataracts are discussed as well as their management. PMID- 3841545 TI - [Phosphatidylglycerol in amniotic fluid. Value of rapid determination using an immunologic technic]. AB - We have studied 55 samples of amniotic fluid taken by amniocentesis from 32 women, most of whom had arterial hypertension, with or without intra-uterine growth retardation; with or without uncertainty as to their dates. Fetal pulmonary maturity was estimated by determining the lecithin/sphingomyelin (L/S) ratio and the levels of phosphatidylglycerol (PG) in 55 samples. The semi quantitative levels of PG were worked out using a simple and rapid immunological method. Our results show that there is a good correlation between the two tests. The level of PG is, however, more specific than the L/S ratio, for which we found some false negatives. In particular, there were 7 samples looked at 48 hours before delivery which showed an L/S ratio lower than 2 and a PG at or above 2 micrograms/ml. None of these 7 had hyaline membrane disease. Furthermore the simplicity and speed of this test make it possible to use it routinely. PMID- 3841546 TI - Lectin binding sites and anionic components related to differentiation in the prenatal rat cerebral cortex. AB - The location of lectin binding sites and of anionic components was studied in the embryonic rat cerebral cortex after the formation of the cortical plate at embryonic day 18. The cortical layers advanced in differentiation, i.e. the sub plate region and the marginal zone, showed a predominant staining with peroxidase conjugates of wheat germ agglutinin (WGA), peanut agglutinin (PNA), and after immunocytochemical detection of PNA binding sites. This pattern was obtained also with the colloidal iron hydroxide staining method. In contrast to this, the binding of concanavalin A and of succinylated WGA did not reveal a prevalent staining of the sub-plate region and the marginal zone. The further histochemical analysis of the substances responsible for the selective staining of these layers was performed by lipid extractions and by enzymatic treatment of the tissue sections with trypsin, hyaluronidase or neuraminidase prior to the binding of lectins or colloidal iron. The results obtained indicated high concentrations of sialylated galactosylglycoproteins in coexistence with glycosaminoglycans. Electron microscopy was performed with peroxidase conjugates of WGA and PNA. Binding sites of both of the lectins in the sub-plate region and in the marginal zone were located mainly at cell surfaces of the different cellular structures. The most intensive binding of WGA and PNA was detected at the surface membranes and at intracellular material of amoeboid microglial cells and astrocyte-like cell processes. It can be concluded that in distinct brain areas during early differentiation specific glycoproteins in coexistence with glycosaminoglycans are situated at, or associated with cell surfaces in high concentrations. The identical histochemical features previously described in mesenchymal tissues suggest that these glycoconjugates might be related to common morphogenetic processes in which non-neuronal cells of brain and body are specifically involved. PMID- 3841547 TI - Pen and field trials of a new anticoagulant rodenticide flocoumafen against the house mouse (Mus musculus L.). AB - The efficacy of flocoumafen, a novel anticoagulant rodenticide, was evaluated in feeding tests on confined and free-living populations of house mice (Mus musculus L.). In four pen trials, family groups of laboratory-reared wild mice were conditioned to feeding on plain foods and then offered flocoumafen at 0.005% in pinhead oatmeal bait. All 68 mice, comprising juvenile and adult animals, died within 10 days. Ten field trials were carried out, using the same formulated poison bait, against mice infesting farm buildings. Mean treatment success, estimated from live-capture and mortality data, ranged between 87.1 and 100%. The performance of flocoumafen is compared with that of difenacoum, bromadiolone and brodifacoum used at the same concentration in oatmeal bait. Flocoumafen gave an equally effective but quicker kill of mice. It is concluded that flocoumafen is a promising new rodenticide for the control of M. musculus. PMID- 3841548 TI - The computer as a tool in the diagnosis and treatment of peripheral vascular disease. AB - The application of a mini computer to a routine diagnostic vascular laboratory has been assessed in over 4,500 patients over a period of 5 years. The laboratory functions to provide diagnosis of peripheral vascular disease. The computer functions are: scientific, in which it is used for modelling the arterial system and for applying diagnostic algorithms using haemodynamic signals re-input data, data base management, in which it is used to store clinical histories, the results of haemodynamic tests, and data for reconstructive surgery, and administrative, in which it is used for laboratory booking, report generation and management and workload statistics. PMID- 3841549 TI - [Simple hysterectomy for stage Ia carcinoma of the uterine cervix]. PMID- 3841550 TI - [Thyrotoxicosis preceded by hypothyroidism in a case of chronic thyroiditis with Graves' ophthalmopathy]. PMID- 3841551 TI - ARMIS: a microcomputer-based hospital risk management information system. AB - Information processing is a major element of hospital risk management programs. A microcomputer-based information system has been designed and implemented in a medium-size university hospital. The design principles and the functional capabilities of the system are described here, followed by an evaluation based on the first year of operation. PMID- 3841552 TI - A microcomputer program for record keeping in the pharmacy of King Fahad Hospital, Jeddah, Saudi Arabia. AB - Computers in general and microcomputers in particular are playing an important role in the management of hospitals in most of the developed countries of the world. The authors have undertaken a project on similar lines in King Fahad Hospital, Jeddah. Here, they describe the details of an on-line microcomputer program developed for recording inventory data in the pharmacy of this hospital. PMID- 3841553 TI - Multiprocessing computer system for sensory evoked potentials and EEG spectral analysis for clinical neurophysiology laboratory. AB - A general-purpose minicomputer has been adapted and interfaced for the averaging and analysis of clinical evoked potentials and for compressed spectral arrays (CSA) of the routine EEG. In the first 2 years of operation, over 1,000 routine clinical studies of visual evoked potentials (VEP) and brainstem auditory evoked potentials (BAEP) have been performed with it, as well as over 100 CSAs and a variety of special and research studies. The CSA modality gives comparative frequency-domain pictures of left and right hemisphere power. An attached graphics terminal gives a live cumulative display of the EP and CSA. In addition, the system has automated and comprehensive physician-interactive graphics analysis and report generation capabilities. The reports are finalized versions used in the patient's chart, minimizing clerical efforts. PMID- 3841554 TI - [The practice of feto-pathological examination in 5 countries of the European Common Market]. AB - The authors present legal, ethic, socio-cultural aspects of foeto-pathology as they are actually observed in five nations of the European Community (Belgium, Spain, Greece, Italy, the Netherlands). They underline the efforts that have to be made to develop foeto-pathology in their countries. PMID- 3841555 TI - Chemistry of acronycine, XI. Rearrangement of dihydronoracronycine to dihydroisonoracronycine-mechanistic studies. AB - The rearrangement of dihydronoracronycine (3) to dihydroisonoracronycine (4) proceeds by way of an intermolecular reaction rather than an intramolecular reaction as had originally been supposed. Deuterium-labeling studies showed the incorporation of deuterium at C3, C12, and the geminal methyl positions of dihydroisonoracronycine (4). Because no reaction occurred when the bisnor derivative was treated in the same manner as 3, it appears that the chromene geminal methyl groups are important for the rearrangement to occur. PMID- 3841556 TI - Antitumor agents, 75. Synthesis of cytotoxic anthraquinones digiferruginol and morindaparvin-B. AB - A simple and efficient synthesis of digiferruginol (4) and morindaparvin-B (10) is described. Marschalk reaction of 1-hydroxyanthraquinone afforded 1-hydroxy-2 methylanthraquinone (2). Treatment of 2 with N-bromosuccinimide and benzoyl peroxide led to 1-hydroxy-2-bromomethylanthraquinone (3), which was converted to 4 with AgNO3 in quantitative yield. Methylation of 1,5-dihydroxyanthraquinone yielded a dimethyl ether (6), which was partially demethylated with boron trifluoride to a difluoroboron chelate (7). Treatment of 7 with alkaline HCHO and sodium dithionate gave rise to 1-hydroxy-2-hydroxy-methyl-5-methoxyanthraquinone (9). Cleavage of the 5-methyl ether of 9 with boron tribromide furnished 10. PMID- 3841558 TI - Treatment of chronic cancer pain by means of continuous intrathecal low dose morphine administration with a totally implantable subcutaneous pump. Case report. AB - A 59 year old man suffering from intractable chronic pain from sacral coccygeal relapsing neoplasia with pelvic invasion, operated and irradiated more than once, after a first partial success with subarachnoid intermittent morphine infusion by means of a subcutaneous reservoir, refilled transcutaneously, has been treated with continuous intrathecal low-dose morphine infusion with a totally implantable pump. This device not only greatly resolves many of the problems connected to spinal administration of morphine, but it also allows to obtain constant concentrations of the drug, so that an efficacious therapeutic action is already present at low doses, reducing the risks of overdose and supraspinal redistribution as well as the development of tolerance. This case represents the first example in Italy of the use of a completely implantable pump for this purpose. PMID- 3841557 TI - Antitumor agents, 74. Bruceanol-A and -B, two new antileukemic quassinoids from Brucea antidysenterica. PMID- 3841559 TI - Joint vendor/user aspects of retrofitting equipment for automatic control. PMID- 3841561 TI - Xanthoma disseminatum. PMID- 3841560 TI - Enzymatic reduction of sennidin and sennoside in Peptostreptococcus intermedius. AB - Peptostreptococcus intermedius, one of the dominant bacteria of human intestine, reduced sennidin and sennoside to rheinanthrone and 8-glucosyl-rheinanthrone, respectively, and these reduction rates were stimulated by the addition of nicotinamide adenine dinucleotide (reduced form) (NADH), flavin adenine dinucleotide (FAD) and glucose. The reduction was accelerated by removing oxygen from the incubation tubes, which indicates the inhibition of the reduction by O2. Thus, for the maximal activity, the reaction system required an anaerobic condition and cofactors, NADH and FAD. This bacterium also reduced methyl orange, whose mode of reduction resembled that of sennidin reduction. More than 80% of these activities were recovered in the supernatant fraction after sonication of the bacterial suspension, and these activities were purified together by means of Sephadex G-200 gel-filtration and diethylaminoethyl-cellulose column chromatography. The purified enzyme reduced FAD and benzyl viologen in the presence of NADH under an anaerobic condition. PMID- 3841562 TI - [The role of radiotherapy in the treatment of Hodgkin's disease]. AB - Twenty-two patients with Hodgkin's disease were treated at Kanazawa University between 1975 and 1982. Patients in stage I or II were treated with radiotherapy. Those in stage III or IV underwent combination chemotherapy (MOPP) with or without radiotherapy. Twenty patients have achieved a complete remission (90.9%). The 10-year survival rate of all patients is 90%: 100% for patients in stage I or II and 73% for patients in stage III or IV. Thus, radiotherapy can be recommended as a primary treatment for patients in stage I or II while MOPP with radiotherapy could be effective for those in stage III or IV. PMID- 3841563 TI - [A case of distal renal tubular acidosis associated with Sjogren's syndrome, Hashimoto's thyroiditis and chronic hepatitis]. PMID- 3841564 TI - [Effect of neuropeptide Y on the sympathetic neuromuscular junction of the lymphatic venule wall]. PMID- 3841565 TI - [Role of endogenous acetylcholine on the circular and longitudinal smooth muscle of the guinea pig vas deferens]. PMID- 3841566 TI - [The software pacemaker--an ever-needed stimulator]. PMID- 3841567 TI - [Hemodynamic effects of molsidomine in patients with cardiac insufficiency at high altitudes]. AB - Central hemodynamic effects of 0.05 mg/kg molsidomine were examined in 60 patients with decompensated mitral disease dwelling at low and medium altitudes. M-echocardiography was used to assess hemodynamic shifts. The assessments were made during the diagnostic probing of a pulmonary artery in 23 cases. Hemodynamic efficacy of molsidomine was more pronounced up in the mountains. Rationale are given for expanding indications for peripheral vasodilators (molsidomine) in highlanders with congestive heart failure. PMID- 3841568 TI - [Recent injuries of the cartilage of the knee joint]. PMID- 3841569 TI - [Extent of thyroid resection in diffuse toxic goiter in relation to its macro- and microstructure]. PMID- 3841570 TI - [Effect of various types of bronchial asthma therapy on the surfactant content of the lungs]. PMID- 3841571 TI - [Results of treating relapses of diffuse toxic goiter with radioactive iodine]. PMID- 3841572 TI - Inhibition of steroidogenic cytochrome P-450 enzymes in rat testis by ketoconazole and related imidazole anti-fungal drugs. AB - Ketoconazole, an imidazole antifungal drug, has previously been shown to diminish testosterone and cortisol production in patients as well as rat and mouse cells in vitro. Inhibition of adrenal mitochondrial cytochrome P-450 enzymes was demonstrated. In this study we tested several imidazole antifungal drugs and examined the individual steps in testicular steroidogenesis to determine which enzymes in the androgen pathway were blocked. In addition, we studied 25 hydroxyvitamin D 24-hydroxylase activity in cultured pig kidney cells (LLC-PK1) to assess a mitochondrial P-450 enzyme in another organ. All imidazoles tested inhibited both total testosterone production and 24-hydroxylase activity but the relative potencies differed. We next studied the individual testicular enzymatic steps between cholesterol and testosterone. Ketoconazole inhibited cholesterol side-chain-cleavage enzyme (mitochondrial) and C-17,20 lyase (microsomal). The three inhibited enzymes (two testicular and one renal) are all P-450 cytochromes. Testicular 17-hydroxylase, also a P-450 cytochrome, was not inhibited even at high doses of ketoconazole. This is an interesting finding because the testicular hydroxylase and lyase have been shown to be a single protein. Non-cytochrome P 450 enzymes in the androgen pathway were not inhibited. The results demonstrate that several imidazole antifungal drugs all inhibit both microsomal and mitochondrial cytochrome P-450 enzymes in multiple organs. PMID- 3841573 TI - Effect of ketoconazole and miconazole on 25-hydroxyvitamin D3 metabolism by cultured chick kidney cells. AB - The antifungal imidazoles, ketoconazole and miconazole, were tested for effects on 25-hydroxyvitamin D3 metabolism in primary cultures of chick kidney cells. Both behave as competitive inhibitors of 1-hydroxylation of 25-OH-D3 with approximate Ki's of 0.8 and 5.0 microM for ketoconazole and miconazole, respectively. Ketoconazole was as effective when added at the same time as the substrate as when the cells were preincubated with the compound. Ketoconazole also inhibited the production of 24,25(OH)2D3 in cells in which this activity was induced by 1,24(OH)2D3. The data suggest that therapeutic doses of these antifungal imidazoles could affect vitamin D status and calcium metabolism. PMID- 3841574 TI - Rationale for combining chemotherapy and hormonal therapy in breast cancer. AB - Both chemotherapeutic agents and hormones are effective in breast cancer treatment. Their mechanism of action seems to be conflicting: while cytotoxic drugs are active on cycling cells, hormones prolong the G0 phase. Therefore, the concurrent use of hormones and chemotherapy could decrease their expected clinical activity. On the contrary, a review of the literature suggests that there could be some synergistic action with combined therapy. The problem is therefore to assess the efficacy of simultaneous vs sequential administration of hormones and chemotherapy. In advanced disease the general conclusion could be that simultaneous administration of combined therapy: increases, although the difference is not statistically significant, the response rate both in pre and postmenopausal patients; and the most important end point, total survival, is not statistically improved by simultaneous vs sequential administration. In addition, in the adjuvant setting combined treatment appears superior to chemotherapy only in postmenopausal, receptor-positive patients. No definite conclusion is today available in premenopause. PMID- 3841575 TI - Ion selective microelectrodes: computer-controlled calibration, plotting, and data analysis. AB - Calibration of ion-selective microelectrodes involves delivering and measuring the potential of several different solutions both before and after intracellular measurement. A microprocessor-controlled system is described which completely automates that tedious process. The microcomputer controls the delivery of the calibration solutions and prints out the calibration value along with the solution number. A second program plots the calibration curve using a modified Nicholsky equation and a third program converts intracellular ion signals into ion concentration. Specific examples based on Ca-selective microelectrodes are shown. PMID- 3841576 TI - Pulmonary surfactant lipid synthesis from ketone bodies, lactate and glucose in newborn rats. AB - The contribution of acetoacetate (AcAc), beta-hydroxybutyrate (beta OHB), lactate and glucose to pulmonary surfactant lipid synthesis in three- to five-day-old rats was measured. Minced lung tissue was incubated with 3H2O and [3-14C]AcAc, [3 14C]beta OHB, [U-14C]lactate or [U-14C]glucose, and the radioactivity incorporated into surfactant lipids was measured. When expressed as nmol of substrate incorporated/g lung tissue per four hr, lactate was incorporated more rapidly than other substrates into total surfactant lipids and phosphatidylcholine (PC). There was no difference in the rates of incorporation of lactate, AcAc or glucose into disaturated PC (DSPC). Substrates other than glucose were incorporated almost exclusively into fatty acids, whereas 60-80% of glucose incorporated into surfactant phospholipids was found in fatty acids, with the remaining in glyceride-glycerol. When expressed as nmol acetyl units incorporated/g lung tissue per four hr, the rates of AcAc, lactate and glucose incorporation into total surfactant fatty acids were comparable. Glucose incorporation into DSPC and PC was greater than that of AcAc and lactate. When glucose was the only exogenous substrate added to the incubation medium, it contributed 37% of total surfactant fatty acids synthesized de novo. In the presence of other substrates, the contribution of glucose to de novo fatty acid synthesis dropped to 14-20%. In the presence of unlabeled glucose, 14C-labeled AcAc, lactate and beta OHB contributed 52%, 40% and 19%, respectively, of the total fatty acids synthesized de novo. The rate of beta OHB incorporation into surfactant lipids was only about 50% that of other substrates and was accompanied by low activity of beta-hydroxybutyrate dehydrogenase measured for newborn lung.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841577 TI - Potential antineoplastic dihydroxy- fatty acids. AB - The fatty acid aglycones of two naturally occurring glycosides, one of which is reported to possess antitumor activity, were synthesized for biological evaluation. The preparation of 3,11-dihydroxyhexadecanoic acid and 3,12 dihydroxyhexadecanoic acid started with the monoethyl esters of nonanedioic acid and decanedioic acid, respectively, and proceeded through the corresponding C14 ketoesters, ketalesters, and ketalaldehydes and C16 ketalhydroxyesters and dihydroxyesters. Various products and intermediates were found to have no inhibitory action in the P388 lymphocytic leukemia screen. A rearrangement of the ethylene glycol ketal-protecting group from the initially protected ketone group to a newly formed aldehyde moiety was observed. PMID- 3841578 TI - Use of cytoprotective agents in the treatment of gastric ulcers. PMID- 3841580 TI - Cytoprotective agents and ulcer relapse. AB - This study establishes that real differences between relapse rates exist, and confirmed previous observations by Pounder et al. that relapse rates influence clinical outcomes in ulcer populations.8 The results make it clear that the way in which a drug influences relapse is an important determinant of therapeutic efficiency, additional to the requirement for healing efficiency. Cytoprotective agents as a group appear to be associated with lower relapse rates than cimetidine. It si not known whether the differences are peculiar to cimetidine, specific to the blockade of H2-histamine receptors, or whether they relate to the process of inhibition of secretory processes generally, further comparisons are needed; however, conventional, clinical trials are not designed to provide the necessary information. For the healing of peptic ulcers, lower relapse rates appear to provide therapeutic advantage to members of the cytoprotective group when compared with agents acting via anti-secretory mechanisms, in addition to that associated with the local (non-systemic) mode of action where applicable. PMID- 3841579 TI - Mucosal protective agents in the long-term management of gastric ulcer. PMID- 3841581 TI - [The effect of hypoxic hypothermia on pregnancy and fetal development in rats]. PMID- 3841582 TI - [Use of sucralfate (Ulcar) as phosphorus chelator in hemodialysis patients: preliminary results]. PMID- 3841583 TI - [Association of Wolff-Parkinson-White syndrome and mitral valve stenosis in pregnancy]. PMID- 3841584 TI - [Do puberal retardations and menstruation disorders really exist in professional dancers?]. PMID- 3841585 TI - Preliminary study of cognitive retraining via computer-based activities. PMID- 3841586 TI - [Radiosensitizing effect of new hypoxic cell radiosensitizer, RK-28 on experimental animal normal tissue and Ehrlich tumor]. PMID- 3841588 TI - Arthroscopic medial meniscectomy. Operative techniques and problems. AB - There is no specific best technique for arthroscopic partial medial meniscectomy. Efforts should be made to assure removal of all mechanically significant or nonfunctional tissue with minimal surgical trauma. Instrument selection should be based on the surgeon's preference and the condition of the tissue to be excised. Intraoperative and postoperative problems are usually avoidable if anticipated. With appropriate attention to detail and adherence to traditional sound surgical principles, arthroscopic partial medial meniscectomy can be a successful and satisfying procedure. PMID- 3841587 TI - [20 years (1960-1980) of bacterial meningitis in childhood. II. Therapy and diagnosis]. AB - In this article we review the global therapy for purulent meningitis in childhood and present personal data derived from a twenty year survey study (1960 to 1980). We recommend the prompt use of adequate antibiotics at correct doses largely following the intravenous pathway in order to achieve active antimicrobial levels in the cerebrospinal fluid. On the basis of our experience we favour a more large use of either systemic chloramphenicol or intrathecal even in the neonatal period. Moreover, we think glucose infusions should be employed with great caution due to worsening of metabolism (lactate accumulation) and perfusion in the cerebral tissue. PMID- 3841589 TI - Three dimensional imaging of bone from analysis of computed tomography data. AB - A computer system was developed to reconstruct three dimensional images of bone from analysis of computed tomography data. Images of bone can be made within minutes and rotated for viewing from any direction. An editing process allows visualization of the articular surfaces of any joint. Solid models of the bone images can be produced with an accuracy of 1 mm to 3 mm by interfacing the image data with a computer numerically controlled milling machine. This technology will provide better information to the surgeon for preoperative diagnosis and planning and for the design of customized implants. PMID- 3841590 TI - Case 7. Progressive respiratory distress in an infant. PMID- 3841591 TI - Eimeria meleagrimitis sporozoites: effect of lectins on invasion of cultured cells. AB - Exposure of primary turkey kidney cell cultures to 100 micrograms/ml wheat germ agglutinin (WGA), a lectin that binds N-acetylglucosamine (NAcGl), significantly inhibited invasion of the cells by Eimeria meleagrimitis sporozoites. However, neither succinyl-WGA, a lectin that retains an affinity for NAcGl but does not bind sialic acid, nor pokeweed mitogen, another lectin that binds NAcGl, similarly inhibited invasion. Collectively, the data suggested that the inhibition of invasion may be caused primarily by binding of WGA to anionic moieties on the host cell surface and not to specific binding to NAcGl. Exposure of cells to concanavalin A, phytohemagglutinin, or Ricinus communis lectin, as well as with pokeweed mitogen, failed to inhibit invasion by the sporozoites. Ultraviolet microscopy, using fluorescein-conjugated lectins, showed that the lectins had bound to the surface of the cultured cells. No binding of NAcGl or lectins to the surfaces of the sporozoites was demonstrated by either the clumping of the parasites in different lectin concentrations or the use of fluorescein-conjugated lectins. However, exposure of E. meleagrimitis sporozoites to NAcGl increased invasion of untreated cells by 50%. PMID- 3841592 TI - Role of intervention surgery in stage III-IV epithelial ovarian carcinoma. PMID- 3841593 TI - Preoperative chemotherapy in patients with gastric cancer. PMID- 3841594 TI - Perioperative chemotherapy for the management of primary local regional urothelial tumors. PMID- 3841595 TI - [The analysis of the compound X50 in human serum]. PMID- 3841596 TI - [Pharmaceutical characterization and spectroscopy of Bonnecor (AWD 19-166, GS 015)]. AB - To describe the pharmaceutical behaviour of Bonnecor methods and results of testing identity, purity, content and stability are presented. Spectroscopical analyses are needed for costitutionel examination of the molecule and of some possible metabolites. PMID- 3841597 TI - [Antiarrhythmic action of 3-carbethoxyamino-5-dimethylaminoacetyl-iminodibenzyl hydrochloride (Bonnecor, AWD 19-166, GS -15) on experimental arrhythmia induced by aconitin, ouabain, calcium chloride and barium chloride]. AB - In comparison with detajmium, prajmalium, ajmaline, quinidine, lidocaine, disopyramide, propranolol, and Ethmozin the substance GS 015 is tested on the aconitin-induced arrhythmia of the rat, the auricular fibrillation by aconitin of the dog, the ventricular arrhythmia induced by ouabaine of the dog, the arrhythmia caused by calcium chloride of the rat, and the arrhythmia induced by barium chloride of the rabbit. The particular qualities of effect in the special forms of arrhythmia are discussed in connection with the study of the antiarrhythmic action in case of coronary occlusion, with the increase of the electric fibrillatory threshold, and with the electrophysiologic tests. PMID- 3841598 TI - [Characteristics of the anti-arrhythmic action of 3-carbethoxyamino-5 dimethylaminoacetyl-imino-dibenzyl hydrochloride (Bonnecor, AWD 19-166, GS 015)]. AB - The action of GS 015, a substance out of the series of the novel 5-(dialkyl-amino acyl)-3-carbalkoxyamino-10,11-dihydro-5H-dibenz[b ,f]azepines, on the alteration of the bioelectric activity in the sympathetic nerves of the heart in case of disturbed cardiac rhythm and ventricular fibrillation was tested on anaesthetized cats. The arrhythmias were induced by two different methods: Artificial electric induction by high-frequency electrical stimulation of the ventricles, occlusion and reperfusion of the anterior descending branch of the arteria coronaria sinistra. GS 015 decreases the tonic bioelectric activity in the sympathetic nerves of the heart and prevents their activation in case of disturbed rhythm which is provoked or by electric stimulation or by occlusion of the coronary artery. With an electric stimulation of the ventricles GS 015, given at doses of 0.5, 1.0, and 2.0 mg/kg, decreases the maximally reproducible frequency in dependence on the dose, which corresponds to an increase of the effective refractory period. At the same time the fibrillation threshold of the ventricles is enhanced in a very intense and long-lasting manner excelling considerably the action of the reference preparations Ethmozin and lidocaine. It may be concluded from the present results that the antiarrhythmic and antifibrillatory effects of GS 015 are basing not only on its immediate action on the myocardial cell but also on a decrease of the activity in the sympathetic nerves of the heart. PMID- 3841599 TI - [Antifibrillatory and anti-arrhythmic action of 3-carbethoxyamino-5-dimethylamino acetyl iminodibenzyl hydrochloride (Bonnecor, AWD 19-166, GS 015) on models of myocardial ischemia]. AB - The intense antifibrillatory and antiarrhythmic actions of GS 015, a derivative of the novel structure series of the 5-(beta-aminoacyl)-3-carbalkoxyamino iminodibenzyles, are demonstrated on models of myocardial ischaemia: antifibrillatory action on the acute coronary occlusion in the conscious rat (1.0 mg/kg i.v.) and antiarrhythmic action on the two-step coronary ligature in the conscious dog according to Harris (2.0 mg/kg i.v. and 5.0 mg/kg orally). On the strength of the present results it is discussed that GS 015 is first of all suitable for influencing "early arrhythmias" with re-entry mechanism and only in the second line for taking an influence on "late arrhythmias" which arise from the occurrence of ectopic focuses. The substance seems suitable for preventing terminal arrhythmias in patients with ischaemic heart disease as well as for treating arrhythmias in the acute stage of myocardial infarction. PMID- 3841600 TI - Electrophysiological effects of a new antiarrhythmic substance Bonnecor (AWD 19 166, GS 015) on mammalian myocardium. AB - A new antiarrhythmic acting drug (Bonnecor, AWD 19-166, GS 015, 3- Carbethoxyamino-5-dimethyl-amino-acetyl-iminodibenzyl -hydrochloride) was tested electrophysiologically on isolated sinus node preparations and right ventricular papillary muscle of the rabbit. Transmembrane potentials were measured using a standard microelectrode technique. The substance was tested within a concentration range between 0.1 and 10 mg/l (2.5 X 10(-7) to 2.5 X 10(-5) mol/l). AWD 19-166 exerted negative chronotropic effects due to decreasing of the slope of the diastolic depolarization in sinus node cells. In ventricular myocardium AWD 19-166 increased the threshold strength of stimulation, prolonged the duration of action potentials at 90% but shortened it at 25% repolarization. The maximum upstroke velocity was found to be depressed. The maximum overshoot potential was diminished inspite of a drug-induced hyperpolarization of the resting transmembrane potential. Analysis of membrane responsiveness due to premature stimulation showed a concentration-dependent delay in the restitution of the maximum upstroke velocity of the premature action potentials and both a flattening and a shift towards more negative potentials of the potential responsiveness relationship. AWD 19-166 decreased both the maximum upstroke velocity and the duration of Ca-mediated action potentials in concentrations between 2 and 8 mg/l. It is concluded that AWD 19-166 is able to exert potent antiarrhythmic effects in influencing both the fast and slow channel activity. PMID- 3841601 TI - Inotropic effects of the antiarrhythmic compound Bonnecor (AWD 19-166, GS 015). AB - The inotropic effects of the new antiarrhythmic compound AWD 19-166 have been studied at constantly driven isolated left atria of guinea pig (weight between 250 and 350 g). AWD 19-166 exerted dose-dependently negative inotropic effects. Half maximum effects were measured at 1.7 mg/l (n = 7). At concentrations higher than 5 mg/l the negative inotropic effects were found to be irreversible. PMID- 3841602 TI - Electrical effects of the new antiarrhythmic compound Bonnecor (AWD 19-166, GS 015) under arrhythmogenic conditions. AB - Electrical effects of the new antiarrhythmic compound Bonnecor (AWD 19-166, GS 015) were studied under conditions known to increase the intracellular Ca2+ activity (extracellular K+-deprivation, application of glycosides). In K+ free solutions right ventricular papillary muscles showed an extreme acceleration of the initial repolarization indicating an intracellular Ca overload. AWD 19-166 could not prevent the initial shortening of action potentials and seems to be less effective in K+ free than in K+ containing solutions. In partially depolarized (22 mmol/lK+) right ventricular papillary muscles oscillatory afterdepolarizations were not suppressed by AWD 19-166. However, the compound prevented the generation of irregular action potentials triggered by the afterdepolarizations. PMID- 3841603 TI - [Circulatory action and adverse effects of 3-carbethoxyamino-5-dimethylamino acetyl-iminodibenzyl hydrochloride (Bonnecor, AWD 19-166, GS 015) in the dog and cat]. AB - The haemodynamic and cardiac effects of GS 015, a substance of the series of the novel 5-(dialkyl-aminoacyl)-3-carbalkoxyamino-10,11-dihydro-5H-dibenz-[b ,f] azepines with very potent antifibrillatory and antiarrhythmic actions, are studied on anaesthetized dogs and cats by means of the catheter technique. The clinical symptoms and the therapeutic range were tested on conscious animals. On the strength of the present results it can be stated that GS 015, given at pharmacodynamically effective doses, does not cause any circulatory side effects. A negative inotropic effect appears only at increased doses. Like other antiarrhythmic drugs, GS 015 possesses a limited therapeutic range which should be taken into consideration particularly in case of cardiac insufficiency. But an application seems possible also in patients during the acute stage of myocardial infarction. PMID- 3841604 TI - [Clinico-electrophysiologic studies on the action of the anti-arrhythmic substance 3-carbethoxyamino-5-dimethylamino-acetyl-10,11-dihydro-5H- dibenz[b,f]azepine hydrochloride (Bonnecor, AWD 19-166, GS 015)]. AB - The effects of the new antiarrhythmic drug 3-carbethoxy-amino-5-dimethyl-amino acetyl-iminodibenzyl-hydroc hlorid (Bonnecor) (B.) were investigated by means of clinical-electrophysiologic methods (His-bundle electrography, programmed electrical stimulation) in 11 patients with normal cardiac output and paroxysmal supraventricular tachycardias. In a maximal dosage of 0.24 mg/kg body mass. B. affects several compartments of the impulse initiation and conduction. B. has positive chronotropic actions on the sinus node automaticity, negative dromotropic effects on the sinu-atrial, intraatrial, AV nodal and intraventricular conduction and finally negative bathmotropic actions on the myocardium of the atria and ventricles. B. suppress the artificial induction of paroxysmal supraventricular tachycardias in patients with AV nodal reentry. These results help to recognize indications (supraventricular and ventricular premature beats or tachycardias) and contraindications (sick sinus syndrome, atrio ventricular block of higher degree and bifascicular blocks). PMID- 3841605 TI - [Pharmacokinetics and metabolism of 3-carbethoxyamino-5-dimethylamino-acetyl iminodibenzyl hydrochloride (Bonnecor, AWD 19-166, GS 015) in the rat]. AB - Excretion, blood level, distribution, and metabolite samples were studied on the rat after application of GS 015 marked by 14C. The compound is quickly and completely absorbed and metabolized from an aqueous solution. The marked substances form a broad blood level maximum, at the occasion of which a main metabolite distinguishes itself apart from the initial compound at first provable yet. The elimination half-life from the blood is 6 h. An intense influx of radioactive substance into the tissues takes place. The excretion of the marked metabolites occurs mainly renally making appear a second main metabolite. Striking sex differences are partly observed in the parameters tested. PMID- 3841606 TI - [Pharmacokinetics and pharmacodynamics of 3-carbethoxyamino-5-dimethylamino acetyl-iminodibenzyl hydrochloride (Bonnecor, AWD 19-166, GS 015) in the cat]. AB - The antiarrhythmic action of GS 015 was studied proportionally to its plasma concentrations ascertained in parallel, using the model of the electrofibrillation of the cat's heart. Blood levels of about 1.3 micrograms/ml after i.v. injection of 2 mg/kg caused a marked short-term increase of the fibrillation threshold which then remained at the increased level for a longer period yet, observing GS 015 concentrations between 0.8 and 0.5 micrograms/ml. Individual differences existed in the height of the blood level as well as in its proportion to the effect. PMID- 3841607 TI - [Pharmacokinetics and pharmacodynamics of 3-carbethoxyamino-5-dimethylamino acetyl-iminodibenzyl hydrochloride (Bonnecor, AWD 19-166, GS 015) in the dog]. AB - The antiarrhythmic action of GS 015 was studied in proportion to its plasma concentrations ascertained in parallel, making use of the model of the two-step coronary ligature in the conscious dog. Blood levels of 1.0 microgram/ml (2 mg/kg i.v.) or of 0.8 microgram/ml (5 mg/kg orally) brought about a complete suppression of ectopic arrhythmias. The limit concentration for this effect is about 0.5 microgram/ml. PMID- 3841608 TI - [Summarized presentation of studies on the toxicology of 3-carbethoxyamino-5 dimethylamino-acetyl-10,11- dihydrobenz[b,f]azepine hydrochloride (Bonnecor, GS 015, AWD 19-166)]. AB - To ensure toxicologically the potential antiarrhythmic agent 3-carbethoxyamino-5 dimethylamino-acetyl-10,11-dihydro-dibenz[b,f] azepine hydrochloride (Bonnecor, GS 015, AWD 19-166), the following preclinical studies have been made up to the present: Determination of the acute toxicity on mice and rats, toxicity test on the rat by repeated applications, study as to the action of GS 015 on the prenatal development of the rat, diverse toxicologic studies on reproduction, mutagenity tests by using the DNA repair test and the Ames test. The results of these studies are represented in a summarized form. A good tolerance of GS 015 can be derived from the results of the preclinical studies gained up to now. PMID- 3841609 TI - [Synthesis of 3-carbethoxyamino-5-dimethylamino-[1-14C]-acetyl- 10,11-dihydro-5h dibenz[b,f]azepine hydrochloride (Bonnecor, AWD 19-166, GS 015)]. AB - GS 015-14C was synthetized from [1-14C]-chloracetic acid and 3-carbethoxyamino 10,11-dihydro-5H-dibenz[b,f]azepine. The whole radioactivity yield passing all synthesis stages was 32% at a radiochemical purity of more than 98%. PMID- 3841610 TI - [Pharmacologic studies on the effect of 3-carbethoxyamino-5-dimethylamino-acetyl iminodibenzyl hydrochloride (Bonnecor, AWD 19-166, GS 015) on the vegetative and central nervous system]. AB - The substance GS 015 was tested as to its influence on the vegetative and the central nervous system. The total of side effects is low. In spite of the structural resemblance the aspect of action does not correspond to that of tricyclic psychopharmaceutical agents. Pharmacologically relevant doses bring about: local anaesthesia, musculotropic spasmolysis, inhibition of the serotonin induced oedema, antiulcerative effect, intensification of the toxicity of amphetamine. The results do not oppose to a clinical use. PMID- 3841611 TI - The effect of head group structure on phase transition of phospholipid membranes as determined by differential scanning calorimetry. AB - The phase transition characteristics of cardiolipin and phosphatidylglycerol suspensions were investigated by differential scanning calorimetry. The phase transition temperatures for dimyristoylphosphatidylglycerol, tetramyristoylcardiolipin, dipalmitoylphosphatidylglycerol and tetrapalmitoylcardiolipin were 25.0, 47.0, 40.5 and 62.2 degrees C, respectively. The phase transition temperature for a mixture of two analogous phospholipids was higher than that for phosphatidylglycerol alone, but lower than that for cardiolipin alone. It increased along with cardiolipin content. The phase transition temperature for cardiolipin was increased in the presence of divalent cations, particularly Ca2+. The results indicate that the head group of cardiolipin by itself can increase the phase transition temperature. PMID- 3841612 TI - A microcomputer-based system for recording and analyzing behavioral data regarding the sexual activity of male rodents. AB - A microcomputer (TRS-80 Model 4P) based system has been developed to aid in the collection and analysis of behavioral data regarding sexual activity in male rodents. Its capabilities include the recording of events, the online calculation of frequency and latency measures, the monitoring of temporal intervals as demanded by experimental protocols, and the prompting of experimenter activities at prescribed times. PMID- 3841613 TI - Acetoxychavicol acetate, an antifungal component of Alpinia galanga. PMID- 3841614 TI - [Utilization of a computer using programless language for radiation protection management]. AB - Utilization of the computer for radiation control is planned and performed in many radioisotope laboratories. But each laboratory has their own situation which makes the planning difficult with respect to the hardware and particularly to the software. What is the most important is that the practice of radiation management is different for each laboratory both in point of view and in the form of recording. Therefore, the computer program for the radiation management, especially for the management of radioisotopes is required to meet many amendments. In this standpoint, we have developed a "programless language" or "programless software" and have used in our work for several years. As the result of our experience, we have found that the programless language is quite satisfactory for the management of radioisotopes and that it has an advantage in some aspects over conventional programs. It is thought that this "programless language" is effective not only for our own works, but also applicable to other radioisotope laboratories. PMID- 3841615 TI - [Development of gamma-ray spectrometry system (GAMA-III system) for neutron activation analysis]. PMID- 3841616 TI - Managing risk in a technical society: the Tanner Bill in California. PMID- 3841617 TI - [Growth and development in children of adolescents of the middle socioeconomic level. I]. PMID- 3841618 TI - [Coma in full-term newborn infants following acute fetal distress: electro clinical evolution]. AB - Twenty full term infants who had birth asphyxia were studied. These infants were in a comatose state for 4 to 15 days and at least 3 EEG recordings were performed during this period. Six infants recovered without sequelae and in 2 cases there were minor abnormalities. In 7 cases there were major deficits (follow-up: 1 to 9 years) and 5 infants died within 15 days. Abnormal movements were observed in all the babies. Thirteen infants had EEG documented seizures (intermittent in 5 cases and status epilepticus in 8 cases). The prognosis was not correlated with the time of onset or duration of the coma, the time of onset or type of abnormal movements, nor with the presence of intermittent or continuous electrographic seizure activity. The initial tracing on the first day is the most significant prognostic factor. On subsequent days, an inactive EEG always indicated a poor prognosis. An improvement in the EEG on the 2nd on the 3rd day may not correlate with a favourable outcome since 3 such cases had a poor outcome. The clinical and EEG findings during therapy and the value of high levels of anticonvulsant therapy are discussed. PMID- 3841619 TI - [Effects of blocking muscarinic receptors with pirenzepine on the functional plasma flow of the liver in man and in the rat]. PMID- 3841620 TI - [Induction of post-partum ovulation in creole cows by using a Norgestomet implant and temporary removal of the calf]. AB - Two treatments were used to attempt to induce ovulation in anoestrous post-partum creole cows. The use of a Norgestomet implant for 7 days followed by removal of the calf for 48 h induced ovulation in 91, 83 and 71% of anoestrous creole cows treated respectively at 37, 48 and 51 days post partum (implant insertion). In the same time, the cycling rates of the control groups were 30, 35 and 35%, respectively. But calf removal for 48 h at 60 and 80 days without progestagen priming failed to increase the number of cycling cows compared to the control group. Whatever the treatment and the post-partum day, calf growth was not different between the treated and the control groups at 30, 60 and 90 days post partum, and there was no mastitis. PMID- 3841621 TI - [Ovarian fibromas and the Gorlin-Goltz syndrome]. AB - The authors report two ovarian fibromas observed in two sisters whose clinical story suggested a basal cell naevus syndrome or Gorlin-Goltz syndrome. PMID- 3841622 TI - [Fractionation of Crotalus durissus terrificus venom by molecular exclusion chromatography]. PMID- 3841623 TI - [Severe congenital protein C deficiency in the adult. Study of a family]. PMID- 3841624 TI - Correlation of the modified scratch test with the radioallergosorbent test (RAST) in atopic children. AB - The usefulness of the modified scratch test in predicting clinical allergy and its correlation with the RAST were studied in 83 atopic children. A total of 423 scratch tests were compared with the same number of RAST. Percentage agreements between the two tests for individual allergens ranged from 87.5% (milk) to 50% (cat epithelium). The RAST showed more positive results only for the house dust allergen. Both RAST and scratch tests were not indicative of clinical allergy in the skin and gastrointestinal tract. It was concluded that the modified scratch test may give useful information and remain as one of the routine investigative procedures in pediatric allergy. PMID- 3841625 TI - Kinetic differences of the calcium-binding protein in absorptive hypercalciuric renal stone formers. AB - Normal levels of 1.25-dihydroxycholecalciferol and different behaviour of the calcium binding protein kinetics, in a group of absorptive hypercalciuric stone formers indicate that intestinal calcium hyperabsorption in stone formers is due to an altered calcium transport at the intestinal level rather than a phosphate renal leak. PMID- 3841626 TI - Pharmacokinetic studies of ivermectin: effects of formulation. AB - Studies are reported which describe the effects of formulation, animal species, and route of administration on the pharmacokinetics of ivermectin. Biological half-life t1/2 increases in the order: swine (0.5 day) less than dogs (1.8 day) less than cattle approximately equal to sheep (2.8 day). Formulation modifications, based upon the solubility properties of the drug, have been directed towards the development of a nonaqueous injectable formulation for cattle and an aqueous vehicle for horses. Bioavailability following subcutaneous injection in cattle can be regulated by control of injection solvent composition: a vehicle composed of a mixed aqueous-organic solvent exhibits pharmacokinetic properties (i.e., Cp, t1/2, AUC, and F) intermediate between those furnished by an aqueous formulation and via a purely nonaqueous solvent. The longer apparent biological half-life from this latter vehicle (t1/2 = 8.3 days) confirms that a slow absorption process dominates the pharmacokinetics in the nonaqueous injectable product to produce an effective controlled-release formulation. These bioavailability results illustrate the increase in the concentration of an organic solvent and a concomitant decrease in surfactant concentration in a micellar aqueous system for prolonged drug delivery via injection. PMID- 3841627 TI - [Chemotherapy of metastasizing breast cancer]. AB - Treatment strategies for metastatic breast cancer are determined by various prognostic factors. The main two factors are if the patients are of high or low risk. Primary treatment consists of combinations of various drugs with (VAC) or without adriamycin (CMF). Advantages, disadvantages and side effects of these treatment regimens of those (above) as well as other treatment strategies are being discussed. PMID- 3841628 TI - [A new cucurbitacin from Hemsleya graciliflora]. PMID- 3841629 TI - [Studies on the chemical constituents of Artemisia rupestris L]. PMID- 3841630 TI - [Isolation and structure of danshenxinkun D]. PMID- 3841631 TI - Use of malathion against ectoparasites on lactating cows. PMID- 3841632 TI - Association of basal-lamina defects with epidermal and dermal T6-positive cells: evidence of Langerhans-cell migration. AB - We observed the apparent migration of Langerhans cells across the basal lamina of normal human skin by immunoelectron microscopy using monoclonal anti-T6 antibody. This technique made it possible to visualize cytoplasmic processes of Langerhans cells not normally detectable by routine transmission electron microscopy, and therefore facilitated the documentation of the migratory process. Although events early in the migratory sequence were not observed, perhaps as the result of the evanescent nature of this phase, the association of Langerhans cells with focal disruptions in the epidermal basal lamina was documented. The basal lamina adjacent to these Langerhans cells was electron lucent, granular in character, and thinned, or intact, suggesting sequential reassembly after disruption. This study provides ultrastructural documentation supporting the hypothesis of ongoing migration of Langerhans cells across epidermal membranes, and suggests that this process is mediated by the disruption and reconstitution of the epidermal basal lamina. PMID- 3841633 TI - Inhibition of human red blood cell Na+, K+-cotransport by various "high ceiling" diuretics. AB - The rank order of diuretic efficacy of furosemide analogs, e.g. bumetanide and piretanide, in humans is reflected better by their ability to inhibit Na+, K+ cotransport in human red blood cells than by their natriuretic activity in rats. High ceiling diuretics which are structurally unrelated to sulfamoyl diuretics, e.g. muzolimine, tizolemide, MK 447, may be similarly effective in rat and man, but by acting via other mechanisms cannot be detected by use of the Na+, K+ cotransport system. On the other hand, a possible conversion of such compounds to metabolites active in the cotransport system cannot be ruled out. In contrast to ethacrynic acid, the weak inhibitory activity of muzolimine on the Na+, K+ cotransport was not potentiated by cysteine. These results suggest that the diuretic activity of muzolimine is not caused by inhibition of Na+, K+ cotransport. PMID- 3841634 TI - Modulation of eicosanoid release from anaphylactic guinea-pig heart with 5 benzoyl-a-methyl-2-thiophene acetic acid (tiaprofenic acid). AB - The effects of infusion of the non-steroidal anti-inflammatory drugs (NSAID), tiaprofenic acid (2.2 micrograms/min or 10.0 micrograms/min) and indomethacin (1.0 microgram/min) on the release of leukotriene (LT) C4-like immunoreactivity, thromboxane (TX) B2 and 6-keto-prostaglandin (PG) F1 alpha from isolated perfused anaphylactic guinea-pig hearts were investigated. Tiaprofenic acid at both concentrations used significantly inhibited anaphylactic release of TXB2 and 6 keto-PGF1 alpha as did indomethacin (1.0 microgram/min) which was, however, about ten times more potent in this respect. Release of immunoreactive LTC4-like material was not influenced by the lower concentration of tiaprofenic acid used (2.2 micrograms/min), but significantly enhanced by the higher concentration (10.0 micrograms/min). Thus, the effect of tiaprofenic acid on eicosanoid release by the anaphylactic heart is very similar to that of indomethacin without any differential inhibition of TXB2 or 6-keto-PGF1 alpha formation. PMID- 3841635 TI - [Prostaglandin metabolism in ischemic brain edema]. PMID- 3841636 TI - Pharmacological study of a new hypolipidemic drug of prolonged activity, the tetraester of pantethine with 3-(3-pyridinemethoxycarbonyl)propionic acid. AB - The hypolipidemic activity of the tetraester of pantethine with 3-(3 pyridinemethoxycarbonyl)propionic acid (MG 28362) was assessed in various experimental conditions versus the corresponding activities of nicotinyl alcohol (NA), nicotinyl alcohol hemisuccinate (NAH), nicotinic acid (NAC), and pantethine tetranicotinate (PTN). In the normolipidemic rat, MG 28362 causes a more durable reduction of non-esterified fatty acids (NEFA) and serum triglycerides than the reference products. NEFA values return slowly to pretreatment levels without causing the rebound effect typical of most nicotinic acid derivatives. Likewise in the test of ethanol-induced hypertriglyceridemia, MG 28362 shows more pronounced and sustained activity compared to the reference products. It is also more effective on Triton hyperlipidemia and on diet-induced hypercholesterolemia; in the latter test, MG 28362 caused no triglyceride accumulation in the liver. Even at high dosage levels, MG 28362 did not cause the characteristic flushing of nicotinic acid congeners. Last, the new substance displays a fairly marked antiaggregating activity on blood platelets, some anti-hypoxic activity, and a generally low order of toxicity. PMID- 3841637 TI - Use of a microcomputer network for history taking in a prenatal clinic. AB - A stand-alone microcomputer was installed at St. Bartholomew's Hospital to obtain the booking (first prenatal) history. This system has many well-documented advantages over the manual method, particularly with respect to the completeness and quality of the history produced. However, a single microcomputer system is unable to deal with the load of a busy clinic, and initially, several independent terminals were required. We now describe the installation of a local area network to link several microcomputers with a single database in the Antenatal Clinic at Queen Charlotte's Maternity Hospital. PMID- 3841638 TI - Arthroscopic meniscus repair. PMID- 3841639 TI - Meniscal remodeling following partial meniscectomy--an experimental study in the dog. AB - The response of the meniscus to partial meniscectomy (in the avascular zone) was evaluated in 15 dogs. Following surgery 10 of the 15 dogs (67%) demonstrated a remodeling of the cut surface of the meniscus. This process appeared to begin with a fibrin clot which adhered to the meniscectomy surface. The organized clot was then populated by fibrocytes and eventually modulated into a fibrocartilage like tissue by 12 weeks. The origin of the cells is unknown and may represent a migration of cells from the synovium, a proliferation of meniscal fibrochondrocytes, or both. The remodeling process appears to be associated with the presence of a fibrin clot, presumably from residual hemarthrosis. In those menisci that did not remodel [five of 15 (33%)], the meniscectomy surface remained relatively unchanged with no signs of progressive degeneration. PMID- 3841640 TI - Arthroscopic management of degenerative meniscus tears in patients with degenerative arthritis. AB - Frequently, meniscal pathology accompanies degenerative changes affecting the articular surface of the knee. The attritional changes in the meniscus lead to fragmentation of the meniscus and a variety of tears, usually of the posterior horn of the medial meniscus. A prospective study of the results of arthroscopic partial meniscectomy in the presence of at least Outerbridge Grade III chondromalacia of the accompanying joint surface was performed between 1980 and 1984. Eighty-seven knees in 84 patients were studied. The mean age was 62 (29-84) years. The right knee was involved in 44 patients, and 47 were men. Preoperative radiographs demonstrated osteoarthritis in 53 patients. The medial meniscus was involved in 82, while the lateral meniscus was affected in nine knees. Four knees had involvement of both menisci. In 72 knees, the most frequent lesion was a tear of the posterior horn of the medial meniscus. The most frequent configuration of the tears was a flap in 42. The morbidity was small with the use of ambulatory aids being 10 +/- 13 (mean +/- SD) days. Subsequent surgery was performed on six knees consisting of two total knee arthroplasties, two upper-tibial osteotomies, one repeat arthroscopic meniscectomy, and one popliteal cyst excision. Two patients had poor results related to progression of their arthritis and one developed osteonecrosis. Five patients were unchanged from their preoperative status. Subchondral sclerosis or osteophytes on the preoperative radiographs correlated with 72% compared to 90% satisfactory results in the absence of these findings (p less than 0.03). Complications consisted of superficial thrombophlebitis in three, hemarthrosis in one, and superficial infection in one patient.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841641 TI - Application of electrothermal energy in arthroscopy. AB - Bovine stifle joints were utilized for the application of electrothermal energy in arthroscopic surgical procedures. The anatomy of the bovine stifle joint was comparable to that of the human knee and proved to be a suitable model for arthroscopic surgery. Partial and total meniscectomies were performed in vitro and in situ on cadaveric stifle joints using 1.5% glycine as a liquid medium. Histologic preparations revealed no adverse effects associated with the use of glycine, and coagulation necrosis never extended more than 0.1 mm into the meniscal substance. Instrumentation designed specifically for the intraarticular application of electrothermal energy facilitated arthroscopic meniscectomy with minimal effect on adjacent tissue. PMID- 3841642 TI - [Ischemic spinal cord necrosis in epidural anesthesia--a case report]. PMID- 3841643 TI - [The reproductive performance of the Sprague-Dawley rat and changes induced by pregnancy on various parameters of the lipid picture]. PMID- 3841644 TI - [Effects of hypoxic hypoxia and hyperoxia on the respiratory rate of the albino rat, normoxic or hypoxic since its birth]. PMID- 3841645 TI - Medullary bone matrix formation, mineralization, and remodeling related to the daily egg-laying cycle of Japanese quail: a histological and radiological study. AB - A model is presented concerning the remodeling of medullary bone during the egg laying cycle of hens. This model is partly based on earlier results that showed that the active period of medullary bone resorption that produces part of the calcium needed for the eggshell coincides with the period of medullary bone matrix formation. It was hypothesized that mineralization of this matrix takes place during the subsequent inactive period. The present study examines this model. The medullary bone matrix volume, regardless of the degree of mineralization, is quantified in quail hens at four time points during the egg laying cycle. No significant changes in the medullary bone volume (i.e., matrix and bone) during the egg-laying cycle were found, implying that matrix formation and bone resorption are kept in balance within a time interval of only a few hours. In the radiological part of this study the whole body retention (WBR) of 99mTc(Sn)MDP is used as a measure of the amount of low calcium medullary bone matrix formed during the egg-laying cycle. This use of 99mTc(Sn)MDP is justified by an autoradiographic experiment that showed that 99mTc(Sn)MDP actually labels newly formed medullary bone. Localization of the radioactive label showed a high positive correlation with the localization of fluorescent tetracycline labels in the medullary bone. From 4 to 22 hours after ovulation, the amount of medullary bone matrix increases linearly in quail hens.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841646 TI - 1,25-Dihydroxyvitamin D3 effects on collagen and DNA synthesis in periosteum and periosteum-free calvaria. AB - 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] is essential for normal growth and mineralization, but its direct effects on various aspects of bone formation remain controversial. 1,25(OH)2D3 was studied for its effects on DNA, collagen and noncollagen protein synthesis, and alkaline phosphatase activity (APA) in the periosteum and periosteum-free bone from 21-day fetal rat calvariae. 1,25(OH)2D3 (0.01 to 10 nM) inhibited the incorporation of 3H-proline into collagenase digestible protein (CDP) and the percent of collagen synthesized, and, at 10 nM, APA in the periosteum-free bone. 1,25(OH)2D3 inhibited type I collagen without affecting other collagen types. In contrast, 1,25(OH)2D3 at 10 nM caused a small but significant stimulation of the incorporation of 3H-thymidine into acid insoluble residues (DNA) and on DNA content; both effects were exclusively observed in the periosteum. Hydroxyurea did not modify the inhibitory effect of 1,25(OH)2D3 on 3H-proline incorporation into CDP. These studies indicate that 1,25(OH)2D3 stimulates periosteal DNA synthesis but inhibits type I collagen synthesis and APA in the periosteum-free bone. PMID- 3841647 TI - Phosphorylation reaction of vertebrate smooth muscle myosin: an enzyme kinetic analysis. AB - Phosphorylation of vertebrate smooth muscle myosin or its isolated 20 000-dalton light chains by myosin light-chain kinase (MLCK) was found to follow first-order kinetics not only at low ([M] much less than Km) but also at high ([M] greater than or equal to Km) substrate concentration. This observation can most simply be explained by a product inhibition for which the Michaelis constants (Km) of the enzyme for the substrate (dephosphorylated myosin) and for the product (phosphorylated myosin) are approximately the same. For such a case, integration of the kinetic velocity equation gives an exponential formula similar to that of a true first-order reaction, the only difference being that its rate constant (k) depends additionally on the initial substrate concentration ([M]0). The standard kinetic constants (k, Km, Vmax) have been calculated by using this pseudo-first order relationship. Independent evidence for the validity of the derived kinetic relationship was obtained from binding studies with myosin and MLCK. These showed that MLCK binds to phosphorylated and dephosphorylated myosin with approximately equal affinity (Ks = 30 X 10(-9) M). The possible applicability of the same kinetic relationship to other enzyme systems is discussed. PMID- 3841648 TI - The primary structure of the fourth component of human complement (C4)-C-terminal peptides. AB - C-terminal CNBr peptides of the three polypeptide chains of C4 were obtained and sequenced. These results supplement previously obtained data, notably the protein sequence derived from cDNA sequencing of pro-C4 (Belt KT, Carroll MC & Porter RR (1984) Cell 36, 907-914) and the N-terminal sequences of the three polypeptides (Gigli I, von Zabern I & Porter RR (1977) Biochem. J. 165, 439-446), to define the complete primary structure of the plasma form of C4. The beta (656 residues), alpha (748 residues), and gamma (291 residues) chains are found in positions 1 656, 661-1408, and 1435-1725 in the pro-C4 molecule. PMID- 3841650 TI - Conformational analysis of a peptide segment of gastrin in comparison with an antigastric benzothiazocine. PMID- 3841649 TI - Sperm survival studies in peritoneal fluid from infertile women with endometriosis and unexplained infertility. AB - Peritoneal fluid (PF) volume and sperm survival (motility and velocity) were studied in PF from women with unexplained infertility, infertile women with endometriosis and fertile women without endometriosis using a laser light scattering technique. PF volume was significantly larger in the group of women with unexplained infertility (P less than 0.025) and in infertile women with endometriosis (P less than 0.003) when compared with fertile women. There was a significant reduction in the percentage motile sperm in women with unexplained infertility (P less than 0.001) and in infertile women with endometriosis when compared with fertile women (P less than 0.001). In infertile women with endometriosis a positive correlation was observed between peritoneal fluid volume and reduction in the percentage of motile sperms (P less than 0.01). PMID- 3841651 TI - A prognostic score for Graves' disease. AB - We have reanalysed the clinical and laboratory data on 196 individuals with Graves' disease. The consensus of two clustering techniques and a new method of allocating patients to a cluster resulted in two groups of patients, those with a severe and others with a mild disease. The severe disorder is characterized by a high frequency of HLA-B8 and -Al, a low complement level, high titres of circulating immune complex and anti-thyroglobulin antibody, a high lymphocyte transformation index and serum T3 level, a low level of active E-rosettes, large goitres and a high value for the Crooks test. The mild disorder shows a higher frequency of HLA-B12 and an abnormally low absolute lymphocyte number. A weight was calculated for each character according to the relative frequency in the two clusters. A total score could then be calculated for each patient based on their clinical and laboratory findings. There were two distinct distributions of scores corresponding to the two subgroups. This suggests different aetiological factors which may be more easily studied in these more homogeneous groups. Prognostic predictions can be made using the score. The risk of recurrence and the frequency and severity of ophthalmopathy increases dramatically as the score increases. The use of the score in making therapeutic decisions needs to be tested. PMID- 3841653 TI - [Ultrastructure of normal and injured menisci of the knee joint]. PMID- 3841652 TI - Sarcoidosis in ENT practice. AB - Thirteen cases of sarcoidosis were seen at the Royal National Throat, Nose and Ear Hospital and St George's Hospital, Tooting, between 1963 and 1984 inclusive. In only 5 patients had a diagnosis of sarcoidosis been made prior to attendance. In the remaining 8 patients, there was a considerable delay in making a diagnosis in those cases with predominantly nasal symptoms, ranging from 8 to 18 months. Several patients with nasal sarcoidosis had evidence of systemic disease on investigation, but did not receive appropriate treatment early in the course of their disease because of the delay in initial diagnosis. Both the ENT surgeon and the general practitioner must be aware that symptoms of nasal obstruction, rhinorrhea and crusting are not always due to an allergic or vasomotor rhinitis, and granulomatous conditions should always be considered in the differential diagnosis of patients with these symptoms. PMID- 3841654 TI - [Paraplegia following spinal puncture and injection]. PMID- 3841655 TI - [Fifteen cases of chronic lymphocytic thyroiditis with hyperthyroidism]. PMID- 3841656 TI - [Serum lipids and lipoproteins before and after treatment of hyperthyroidism]. PMID- 3841657 TI - [TSH and thyroid hormone levels in newborn infants with hyperthyrotropinemia detected by screening tests, in newborn infants with goiter and those born to mothers with hyperthyroidism]. PMID- 3841658 TI - Haemodynamic effects of molsidomine in patients with severe chronic coronary disease. AB - The haemodynamic effects of a single dose of intravenous molsidomine were assessed in 12 patients with severe coronary disease. The investigation was carried out at rest during angina induced by pacing and after molsidomine during pacing at the rate at which angina had been produced. During angina, left ventricular systolic and end-diastolic pressure rose, left ventricular stroke work fell and coronary flow and myocardial oxygen consumption increased by 58.3% above the control levels. After the administration of molsidomine, atrial stimulation was not followed by angina and there were no significant changes in systolic blood pressure. Left ventricular end-diastolic pressure fell sharply and coronary flow and myocardial oxygen consumption were only 38% and 33% higher, respectively, than the control levels. The beneficial effects of molsidomine in ischaemic heart disease, therefore, are the result of peripheral vasodilation which, by reducing the preload and afterload, lowers the oxygen requirements of the myocardium and thus increase the threshold for angina. A direct action on the coronary network can not be excluded but if such an action does exist it must be very small in the light of the marked systemic effect. PMID- 3841659 TI - Stimulation of the hexose monophosphate pathway by pyrroline-5-carboxylate reductase in the lens. AB - Addition of pyrroline-5-carboxylate (P5C) or its precursors to rat lenses cultured for 24 hr in TC-199 medium containing 14C-glucose results in an apparent concentration-dependent increase in hexose monophosphate-pentose (HMP) pathway activity. Addition of proline, the reduction product of P5C, did not result in an increase, suggesting that stimulation of the HMP pathway is related to the reduction of P5C to proline by the enzyme P5C reductase. No apparent feedback inhibition on P5C reductase was observed. Stimulation of HMP pathway activity by P5C was also observed in the lenses of Philly and Nakano mouse, two models of congenital osmotic cataracts. Compared with its genetic control, the Swiss- Webster mouse, generally no difference in the lenticular levels of HMP pathway activity was observed in the Philly mouse--even after the onset of cataract. Stimulation of the HMP pathway in the Philly lens by P5C, however, was consistently lower than its control. In the lenses from the Nakano mouse and its genetic control, the Balb/c mouse, no difference in the percentage stimulation of the HMP pathway resulting from the addition of P5C was observed, but HMP pathway activity in the Nakano lens was consistently lower than that of the control. PMID- 3841660 TI - [Natural inhibitors of viral replication of low molecular weight]. PMID- 3841661 TI - [Treatment of advanced stage gastric carcinoma: FAM versus chemotherapeutic regimens excluding adriamycin]. PMID- 3841662 TI - [Selected indicator enzymes in the blood serum of persons chronically exposed to fluorides before and after preventive administration of magnesium salts]. PMID- 3841663 TI - Activation of energy expenditure in the rat by a new non-amphetaminic compound: the (4-chlorophenoxyacetate) N-methyl 3-hydroxymethyl piperidine, hydrochloride (PM 170). AB - The (4-chlorophenoxyacetate) N-methyl 3-hydroxymethyl piperidine, hydrochloride (PM 170), chemically unrelated to amphetamine, was studied in normal rats for any thermogenic effect. It was given in graded doses. After an acute treatment PM 170 increases energy expenditure by increasing resting oxygen consumption (VO2) and in the doses used, produced dose-related increases in VO2. Energy expenditure of rats treated for 16 days was chronically elevated, while body weight gain and food intake were reduced. It also stimulated mitochondrial oxygen consumption probably by partial uncoupling of respiration from ATP synthesis. The disruption of oxidative phosphorylation could partially explain the effect of this compound on resting metabolic rate. PMID- 3841664 TI - Aetiology of hearing disorders in children at the schools for the deaf. AB - Ninety-three children attending the schools for the deaf in Copenhagen were examined in order to assess the aetiology of the hearing disorder and to compare the causing factors to those indicated in a previous investigation from 1953. Based on pre-existing investigations including both audiological and non audiological procedures, the aetiology of the hearing impairment was known in 63% while in 37% the cause of the hearing disorder was unknown. A thorough examination programme was performed in 71 of the attending children whereby a reduction of 'unknown cause' of the hearing disorder could be obtained in half of these children. Compared to the previous investigation from 1953 the incidence of acquired hearing impairment had decreased in contrast to congenital severe hearing impairment. Based on the results of the present investigation it is concluded that an improved nosological classification can be obtained by re evaluation of both the children and the parents; the physical examination is a long-standing dynamic process running over years; the increased incidence of congenital hearing impairment can be ascribed to prenatal infections, predominantly foetal rubella which is a preventative disease. PMID- 3841665 TI - [Beta-HCG-producing choriocarcinoma of the pineal area as a cause of precocious puberty]. AB - We report the case of an eight-year-old boy with precocious puberty due to a beta HCG producing choriocarcinoma of the pineal region. beta-HCG-levels were elevated initially (9659 mU/ml) and did not normalize completely after surgical removal of the brain tumor. A relapse of the tumor in the hypothalamic region led to a new increase of beta-HCG-level up to 41258 mU/ml. Histopathology of a subsequently removed metastasis in the right lung showed immunohistological evidence of beta HCG production. Introduction of chemotherapy was followed by a normalization of the beta-HCG-level and of the previously elevated hormone values. PMID- 3841666 TI - Consequences of decriminalization of homosexuality: a study of two Australian states. AB - A comparison between homosexual males in two Australian states, Victoria (prior to decriminalization of homosexuality) and South Australia (eight years after decriminalization), indicated that the consequences of decriminalization did not include an increase in the negative aspects of homosexuality, such as public solicitation or sexually transmitted disease. Findings suggest that as a consequence of decriminalization, the psychological adjustment of homosexual men will increase and sexually transmitted diseases and public solicitation will decrease. These data are tentatively interpreted as indicating that there are few if any negative consequences of decriminalizing homosexuality, and a number of positive consequences. PMID- 3841667 TI - Some anatomical and physiological aspects of anal sexual practices. AB - Anal manipulation and penetration produce stimulation enjoyed as sexual by some people. Although this type of sexual activity is not new, the current social climate of sexual freedom and experimentation has brought it out into the open. This paper reviews some of the anatomical, physiological, and behavioral aspects of this variation of human sexual gratification, and provides the practicing professional, who has to deal with questions on anal sexuality, with information on the subject and suitable background material and literature references for further study. PMID- 3841668 TI - Towards understanding paternal extragenic contributions to early amphibian pattern specification: the axolotl ts-1 gene as a model system. AB - As a model system for understanding the role sperm extragenic components might play in early embryogenesis the genetics and phenotype of the ts-1 axolotl (Ambystoma mexicanum) mutant gene are reviewed. That mutant gene displays parental effects. It exhibits both maternal (egg-mediated) as well as paternal (sperm-mediated) phenotypic effects. A variety of possible modes of action of the ts-1 gene are reviewed. Comparisons of various precedents to the ts-1 genetic data are made. In addition, novel models which account for the ts-1 phenotypic data are presented. PMID- 3841669 TI - A program designed to facilitate the repetitive acquisition, display, and disk storage of sensory evoked responses. AB - We present an algorithm that permits automated acquisition, display, and disk storage of single or dual channel sensory evoked potential waveforms using a Pathfinder II evoked response monitor. Once initiated, data acquisition and storage continue at user-specified intervals without additional user input. A cascade screen display provides trend monitoring. The file for data storage is established and searched using standard Pathfinder commands. The algorithm is written in MECOL, the Pathfinder specific programming language. This programming code imposed a number of limitations that had to be overcome to create a versatile and user friendly algorithm. During clinical use in our operating rooms, the program has been found effective and easy to use by both veteran and novice Pathfinder operators. The "hands-off" trend monitoring permitted by this algorithm has reduced the labor-intensive aspect of sensory evoked potential monitoring. PMID- 3841670 TI - Intracranial Hodgkin's disease. Report of two cases. AB - Two cases of Hodgkin's disease are described; one was intracerebrally located and the other one extended to bone, dura mater and cerebral parenchyma. The classification of the different types of intracranial Hodgkin's disease is reviewed, and the role of Computed Tomography and surgery in the management of this pathology is emphasized. PMID- 3841671 TI - General pharmacological studies of hydroxypropylmethylcellulose acetate succinate in experimental animals. AB - Extensive general pharmacological studies of hydroxypropylmethylcellulose acetate succinate (HPMCAS) were carried out in mice, rats, guinea pigs, rabbits, dogs and frogs. HPMCAS appeared to have no significant effect on the central nervous system, autonomic nervous system and cardiovascular system. Various biological analyses of the blood (including hemolysis and coagulation properties) and urine were unaffected, and the compound showed no significant local anesthetic or vascular permeability. At higher doses of HPMCAS, an increase in secretion of saliva in guinea pigs, a decrease in gastric juice secretion in rats and an increase in rectal temperature in rats were observed, but these effects did not show clear dose-dependence. PMID- 3841672 TI - Toxicological studies of hydroxypropylmethylcellulose acetate succinate--acute toxicity in rats and rabbits, and subchronic and chronic toxicities in rats. AB - The acute toxicity (in rabbits and rats) and the subchronic and chronic toxicities (in rats) of Hydroxypropylmethylcellulose acetate succinate (HPMCAS), a potentially useful pharmaceutical excipient, were investigated. 1) In the acute toxicity study (single oral dose of 2.5 g/kg), no deaths or behavioral abnormalities were observed. Thus, LD50 is higher than 2.5 g/kg. 2) In the subchronic toxicity study (0.63, 1.25 or 2.5 g/kg daily as a single oral dose in the morning, 6 days per week (not Sunday) for 2 months), no significant behavioral abnormality was observed. There was some decrease in body weight gain in rats of both sexes, but the effect was not statistically significant. 3)In the chronic toxicity study (1.25 or 2.5 g/kg daily as a single oral dose in the morning, 6 days per week (not Sunday) for 6 months), no significant behavioral abnormality was observed. There was some decrease in body weight gain in male rats, but it was not statistically significant. 4)Various biochemical and physiological abnormalities in rats were noted in all groups (including the control groups) in the toxicity studies, but there appeared to be no significant dose-related finding attributable to the administration of HPMCAS. PMID- 3841673 TI - Studies of hydroxypropylmethylcellulose acetate succinate on fertility in rats. AB - A fertility study was carried out in Slc: SD rats orally administered Hydroxypropylmethylcellulose acetate succinate (HPMCAS), a useful pharmaceutical excipient, at dose levels of 625, 1,250 and 2,500 mg/kg/day. Male rats were treated with HPMCAS from 60 days before pairing until the completion of mating. Female rats received HPMCAS for 22 days, from 14 days prior to mating up to Day 7 of gestation. All pregnant females were sacrificed on Day 21 of gestation and all fetuses were examined for abnormalities. No abnormal signs were seen in mating or fertility in the rat treated with HPMCAS. No external, internal and skeletal anomalies attributable to HPMCAS were observed in the fetuses. It was concluded that HPMCAS had no harmful effect on mating, fertilization, implantation, or embryonic development. PMID- 3841674 TI - Teratological studies of hydroxypropylmethylcellulose acetate succinate in rats. AB - A teratogenicity study was carried out in S1c: SD rats orally administered Hydroxypropylmethylcellulose acetate succinate (HPMCAS), a useful pharmaceutical excipient, at dose levels of 625, 1,250 and 2,500 mg/kg/day for a period of 11 days from day 7 to day 17 of gestation. Two-thirds of the pregnant females in each group were sacrificed on Day 21 of gestation and their fetuses were examined. The remaining dams were allowed to litter naturally, and the postnatal development of the offsprings was observed. The incidences of external, internal, and skeletal anomalies were not significantly increased in the fetuses of any treated groups. HPMCAS caused no effects on parturition, lactation, postnatal growth and reproductive ability of the male and female offspring. PMID- 3841675 TI - Teratological study of hydroxypropylmethylcellulose acetate succinate in rabbits. AB - A teratological study was carried out in New Zealand White rabbits in order to examine the teratogenic potentiality of HPMCAS, a useful pharmaceutical excipient. HPMCAS was orally administered at dose levels of 625, 1,250 and 2,500 mg/kg/day for a period of 13 days from day 6 to day 18 of gestation. All pregnant females were sacrificed on day 29 of gestation and their fetuses were examined. The administration of HPMCAS during a period of organogenesis produced no embryotoxic and teratogenic effects as well as no influence on behavior, appearance and growth of animals. PMID- 3841676 TI - Effects on offspring induced by oral administration of hydroxypropylmethylcellulose acetate succinate to the female rats in peri- and post-natal periods. AB - A perinatal and postnatal study was carried out in Slc: SD rats orally administered Hydroxypropylmethylcellulose acetate succinate (HPMCAS), a useful pharmaceutical excipient, at dose levels of 625, 1,250 and 2,500 mg/kg/day for a period from day 17 of gestation to day 21 after delivery. All pregnant rats were allowed to litter naturally, and the postnatal development of the offsprings was observed. In the administered group of 2500 mg/kg, the liver weight was significantly increased in males and showed a tendency to increase in females as compared with control. No significant differences between the control group and the administered groups were found in postnatal growth and differentiation, behavior and reproductive ability of male and female offsprings. PMID- 3841678 TI - [Effects of chromium compounds on the respiratory system (Part 3). Inhalation of chromic oxide (Cr2O3) dust by F344 rats]. PMID- 3841677 TI - [Inhibitory effects of pirenzepine on cholinergic stimulation of exocrine rat pancreas in vitro]. PMID- 3841679 TI - [Studies of the anti-cancer drug sensitivity test]. PMID- 3841680 TI - [Monoclonal antibodies against human pulmonary surfactant apoproteins in clinical and pathological diagnosis]. PMID- 3841681 TI - [Incidence of glaucoma in patients with Graves-Basedow disease]. PMID- 3841682 TI - Computers in paediatrics: 15. Determination of left ventricular volumes using two dimensional echocardiography. PMID- 3841683 TI - Determination of the number of exponential functions in pharmacokinetic models on the basis of concentration-time data by MUCOM1. AB - MUCOM1 is a new BASIC computer program which has been developed for automatically deriving the function terms of a pharmacokinetic model, operating on the best approximation principle. The parameters of a poly-exponential model and their confidence intervals are computed from any available concentration-time data. The user neither needs to make an initial estimate of the number of terms, nor to find first approximations to the coefficients of the exponential functions. The approximation procedure is iterative, and is based on the RIP routine. MUCOM1 can be used on desk computers. PMID- 3841684 TI - A Visicalc program for estimating the area under a receiver operating characteristic (ROC) curve. AB - The area under the ROC curve interests us as a method for analyzing discrimination or detectability. One can assess a diagnostic test or probability assessor with respect to its degree of discrimination. The area under the ROC curve gives us the probability of correctly identifying abnormal from normal in a forced-choice, two-alternative problem. Previous methods used for calculating the area involved maximum likelihood estimation on a mainframe or minicomputer. This paper demonstrates an adaptation of a recently published nonparametric method for estimating the area. This adaptation takes advantage of electronic spreadsheet software and may be used on most (if not all) microcomputers. The paper develops the construction of the program needed for the necessary calculations. PMID- 3841686 TI - Diagnosis of meniscal lesions of the knee. PMID- 3841685 TI - An evaluation of methods for estimating the area under the receiver operating characteristic (ROC) curve. AB - The area under the receiver operating characteristic (ROC) curve serves as one means for evaluating the performance of diagnostic and predictive test systems. The most commonly used method for estimating the area under an ROC curve utilizes the maximum-likelihood-estimation technique, and a nonparametric method to calculate the area under an ROC curve was recently described. We compared the performance of these two methods. The results for the area under the ROC curve and the standard error of the estimate as calculated by each of the two methods exhibited high correlation. Generally, the nonparametric method yields lower area estimates than the maximum-likelihood-estimation technique. However, these differences generally were small, particularly with ROC curves derived from five or more cutoff points. Consistent results of hypothesis testing of the significance of differences between two ROC curves will be similar, regardless of which method is used, as long as one uses the same estimation technique on the two curves and as long as the two ROC curves being compared are of similar shape. PMID- 3841687 TI - [Home management of intrathecal catheters]. PMID- 3841688 TI - Biosynthesis of peptides in the skin of Xenopus laevis: isolation of novel peptides predicted from the sequence of cloned cDNAs. AB - From skin of Xenopus laevis, a few peptides have been isolated which are identical or homologous to gastrointestinal hormones and/or neurotransmitters of mammalian origin. We have studied the biosynthesis of these peptides using recombinant DNA techniques. From cDNA librariers constructed from skin mRNA, clones with inserts coding for the precursors of caerulein, thyrotropin releasing hormone and a new peptide termed PGLa have been isolated and sequenced. In the case of caerulein, a small family of precursors containing one, three or four copies of the end product have been detected. The caerulein sequences are separated by homologous sequences which potentially could give rise to additional constituents of skin secretion. Three such peptides have been detected which are presumably liberated from caerulein precursors by cleavage at single arginine residues. PMID- 3841689 TI - Glucagon- and PP-related peptides of intestinal L cells and pancreatic/gastric A or PP cells. Possible interrelationships of peptides and cells during evolution, fetal development and tumor growth. AB - The immunohistochemical detection of six distinct sequences of proglucagon and its derivatives (GRPP, glicentin, glucagon-37, glucagon-29, GLP1, GLP2 and MPGF) in both intestinal L cells and pancreatic or gastric A cells of some mammals (dog, man, guinea pig) confirms that the two cell types produce the same proglucagon molecule, although the final step of its post-translational processing differs in the two cells. Immunohistochemical and ultrastructural patterns of glucagon/glicentin cells in the pancreas of lower vertebrates and early human fetuses, as well as tumor cell studies, suggest an evolution of gastropancreatic A cells from L cells. On the contrary, the PP-related peptide PYY of intestinal L cells, and PP with its C-terminal icosapeptide extension of pancreatic PP cells, likely originate from different prohormones. Although intermediate patterns of peptide expression can be observed, including some F type PP cells of the dog pancreas (uncinate process) and pyloric mucosa showing PYY immunoreactivity or rare PYY and/or HPP immunoreactive cells of the human rectum lacking glicentin reactivity, no obvious relationship can be established between L cells and pancreatic (F-type) PP cells. However, some evolutionary, embryogenetic and oncogenetic link may exist between L cells and human D1-type PP cells, a minor population of PP cells scattered in the pancreatic tissue of dorsal pouch origin and a major fraction of tumor PP cells. PMID- 3841690 TI - Neuromedins: novel smooth-muscle stimulating peptides identified in porcine spinal cord. AB - Two novel peptides, neuromedin U-8 and U-25, eliciting a potent uterus stimulating activity, have been purified and identified in porcine spinal cord. Sequence analyses and syntheses revealed that neuromedin U-8 is a novel octapeptide with a C-terminal amide structure, while U-25 contains the U-8 sequence at its C-terminus, preceded by paired Arg residues, implicating their biosynthetic relationship. Their potent uterus stimulating activity and hypertensive effect, as well as their unique C-terminal amide structure are indicative of their specialized physiological function. In addition, by utilizing a specific radioimmunoassay for neuromedin B that is a bombesin-like peptide identified in porcine spinal cord, we have isolated two novel "big" neuromedin B, designated neuromedin B-32 and B-30, from pig brain and spinal cord, indicative of their biosynthetic relationship. Nine neuromedins (B, B-30, B-32, C, K, L, N, U-8 and U-25) thus far identified in porcine spinal cord as the smooth-muscle stimulating peptides, are classified into four families; B-(bombesin-like), K (kassinine-like), N-(neurotensin-like) and U-groups. PMID- 3841691 TI - Synthesis and pharmacology of nonmammalian angiotensins and their evolutionary development. AB - To understand how vertebrates utilize angiotensins during evolutionary development studies were undertaken to synthesize and/or characterize angiotensin like peptides from nonmammalian species. These studies indicated the presence of a new L-asparaginase amidohydrolase type enzyme in eel plasma which deamidates L asparagine residue at the amino terminus of the angiotensin peptides, thereby implying that l-asparaginyl decapeptide (rather than l-aspartyl decapeptide) is the natural form of angiotensin inherent in eel plasma. Pharmacological properties of the nonmammalian angiotensins compared with the synthetic analogs in one representative species of three distinct classes of vertebrates suggest that: in spite of variation in position 9 of the nonmammalian angiotensins I, the pressor activity of these peptides in rat and in dogfish shark is due to their conversion into the corresponding angiotensin II; in relatively more primitive stages of evolution, when vertebrates lived in salt water (e.g., dogfish shark) pressor action of exogenous angiotensin II appears to be due to the release of catecholamines (and not through direct vasoconstrictor effects, as in the mammalian species); and frog-skin angiotensin II has properties that may prove to be compatible with a role in the regulation of salt and water in amphibians. PMID- 3841692 TI - Phylogenetic aspects of cardiac hormones as revealed by immunocytochemistry, electronmicroscopy, and bioassay. AB - A hormone family of cardiac peptides has recently been isolated and biochemically and pharmacologically characterized by the relaxation of vascular smooth muscle, diuretic and natriuretic activities. The cardiac hormones are stored in specific granules of the atrial myoendocrine cells. Since data is available only from mammals (rat, pig, man) we started a phylogenetic study by investigating representatives of the higher vertebrate classes (birds, reptiles, amphibians, bony fish) as well as an invertebrate species, the gastropod mollusc Helix pomatia. Homologous cardiac hormones of the cardiodilatin (CDD) family which exerted a dose-dependent relaxant effect on the rabbit aorta were extracted from the atria of all species studied and from the ventricles of amphibians and teleosts. The storage sites of cardiac hormones were localized by electronmicroscopy and immunocytochemistry using antisera against several sequences of pig CDD and applying the peroxidase-antiperoxidase technique. CDD immunoreactivity (CDD-IR) was observed in myoendocrine cells in the atria of all vertebrate species studied, and in amphibians and teleosts also in the ventricles. In the snail, however, CDD-IR was present in nerve endings of the atrium and in perikarya of the subesophageal ganglion as well as in fibers of the intestinal nerve, while no CDD-IR was detected in heart muscle cells. In correlation, no "specific" granules were observed in myocardiocytes of the snail and vascular smooth muscle relaxant bioactivity was present in extracts of the subesophageal ganglion. The findings indicate that in the vertebrates studied the cardiodilatin-immunoreactive substances seem to constitute an endocrine system in the heart. In the snail, in contrast, they are present in a neuro-cardiac axis. This seems to represent a model unique in phylogeny. PMID- 3841693 TI - Central neuromodulation of gastric acid secretion by bombesin-like peptides. AB - The amphibian skin tetrapeptide bombesin shows potent action in reducing gastric acid secretion by intracerebral ventricular (ICV) administration in rats. In order to establish a relationship between this action and the amino acid composition of the bombesin-like peptides, most of the natural bombesin-like peptides and some synthetic analogues were tested on their ability to reduce gastric acid secretion by ICV administration. The amphibian peptides bombesin, its [Tyr4]-bombesin analogue, alytesin, ranatensin and litorin, and the mammalian peptide GRP significantly reduced gastric acid output 2 hr after peptide administration (p less than 0.01). The data support the following prerequisites for the maximal neuromodulatory role of bombesin-like peptides on gastric secretion: Trp is required at position 8; Gln and His are important at positions 7 and 12, respectively; Leu replacement by Phe, which occurs in the litorin subfamily, modifies the response; and unspecified amino acids or sequences are also involved in the N-terminal region of bombesin-like peptides. Synthetic analogues are currently being tested to confirm and extend these conclusions. PMID- 3841694 TI - The karyological basis of atypia. AB - There is no distinct DNA-pattern correlating with the degree of dysplasia. Atypical DNA-histograms can be found in morphologically normal smears especially when earlier smears had been suspicious. They can also persist after hysterectomy. In cases of progression aneuploidy and large scatter dominate while in cases of regression the DNA values are concentrated in the polyploid classes. Therefore, persisting atypical histograms signalize an increased risk in cases of dysplasia. PMID- 3841695 TI - Anticonvulsant effects of propranolol and their pharmacological modulation. AB - The anticonvulsant activity of propranolol was investigated in mice and rats using the electroshock seizure test (MES) and in special cases the electrically evoked hippocampal afterdischarges as a model. The results show that racemic propranolol as well as the two enantiomers were effective against MES. (+) propranolol, the isomer with negligible beta-adrenoceptor blocking capacity revealed the stronger effect, its efficacy was comparable with the potency of phenobarbital, an overadditive synergism could be demonstrated. Subchronic administration of the two enantiomers led to a significantly reduced ED50 value of (-)-propranolol 24 h after the last application, the (-)-isomer became more effective. The (+)-propranolol did not reveal significant differences. In unrestrained rats with chronically implanted electrodes propranolol increased the stimulation threshold and reduced the duration of electrically evoked hippocampal afterdischarges. Investigations with drugs affecting monoaminergic systems in the CNS demonstrated that the noradrenergic system might play a predominant role in modulating the anticonvulsant effectiveness of propranolol. Pharmacological suppression (6-hydroxydopamine, reserpine, phenoxybenzamine) or stimulation (maprotiline, yohimbine, clenbuterol) reduced or enhanced the activity of propranolol against MES. On the other hand, manipulation of the serotonergic or dopaminergic system seemed to be less effective. In general, the findings confirm the results of previous studies that the membrane stabilizing property and not the blocking action on beta adrenergic (or serotonergic) receptors accounts for the anticonvulsant activity of propranolol. PMID- 3841696 TI - Current concepts in the management of paratesticular rhabdomyosarcoma. PMID- 3841697 TI - [Social and health survey of a group of prostitutes]. PMID- 3841698 TI - Three thousand YAG lasers in posterior capsulotomies: an analysis of complications and comparison to polishing and surgical discissions. PMID- 3841699 TI - Spontaneous reversal of vertical diplopia in Graves' eye disease. PMID- 3841700 TI - [Role of endogenous compression in the etiopathogenesis of traumatic diseases and complications]. AB - On the basis of roentgen-anatomical examinations on 242 corpses and experiments on 70 dogs it was established that disturbances of blood circulation developed due to the endogenic compression became the leading factor in etiopathogenesis of the diseases and complications of traumas, aggravated the course and often resulted in lethal outcomes. PMID- 3841701 TI - [Regenerative processes of the internal structures of the knee joint following meniscectomy. Experimental study of the knee joint of the rabbit]. AB - In an experimental study of thirty rabbits, processes of repairing of the inner structures in the knee joint after meniscectomy were examined: Three operational methods were used: The total, partial and sub-partial menisectomy. Macroscopic, microscopic and electron microscopic examinations of the inner structure of the knee joint were made after intervals of one, three, six, nine and twelve weeks after meniscectomy. Processes of adaptation in the articulating parts of the joints were detected after total and sub-total menisectomy. These were in the form of marginally located chrondo-osteophytic deposits. Very little change or no change at all could be found in the tibia and the femur, where a sub-total meniscectomy had been performed. A regenerative development took place in the capsular part of the resection line of the meniscus and/or the anterior part of the meniscus. The regeneration consisted of connective tissue rich in collagen fibres. No cartilage tissue could be found. There was no regenerative development in evidence after performing a sub-total menisectomy. Closure of the lesion/defect to the original half moon shape was not observed. The inner edge of the meniscus base showed itself to be unchanged. Intermediate cartilage structures remaining in the joint after the performance of partial and sub-total meniscectomy showed evidence of changes in connective tissue composition. Microscopy showed changes in its connective tissue through increased layering of collagen tissue in the cartilaginous tissue matrix. Adaptation processes in the tibia and the femur after total and partial meniscectomy indicate a low functional regenerative efficiency. PMID- 3841703 TI - Transplantation of cerebral actinomycosis simulating malignant brain tumor into nude mice. Report of a case. AB - A case of actinomycotic brain abscess simulating malignant brain tumor is presented. Diagnosis was made by histological examination of the operative specimen and of the organs of xenotransplanted Nude mice. The patient survived 3 months after the operation. None of the characteristic organisms could be detected microscopically at the autopsy in the brain and the lung. Xenotransplantation into Nude mice may be a useful method for the relatively quick identification of the causative agent in cases suspected of actinomycosis. PMID- 3841702 TI - [A modern information system for toxicologic analysis based on the (IV+V) system]. AB - After a short description of the background and fundamentals, a program system for a microcomputer is described that permits the implementation of a laboratory specific database and information system. Due to standardized program and data structures and compatibility with different hardware, as well as portability, similar laboratories have the potential of carrying out cooperative studies on a national and international basis. PMID- 3841704 TI - [Studies on the chemical constituents of Knoxia valerianoides Thorel ex Pitard]. PMID- 3841705 TI - Oxygen binding properties of early definitive red cells from normoxic and hypoxic chick embryos. PMID- 3841706 TI - Brain: body ratio and conceptional age in vascular-induced intrauterine growth retarded rabbits. AB - Vascular induced intrauterine growth retardation (IUGR) was achieved by total ligation of approximately 30% of the placental vessels to half the fetuses in the last third of gestation in pregnant rabbits. A correlation between brain weight, body weight and head circumference was established in fetuses and rabbit pups in the perinatal period. The brain:body ratio in restricted IUGR animals was significantly higher than their homologous normal controls. A cephalization index based on the brain:body ratio is proposed to assess adverse effects on brain maturity in the presence of IUGR induced by placental insufficiency. PMID- 3841707 TI - The cephalization index: a screening device for brain maturity and vulnerability in normal and intrauterine growth retarded newborns. AB - Predictive estimates of future neurological maldevelopment as a result of vascular induced intrauterine injury are based on the assumption that the body is more affected than the brain resulting in asymmetrical intrauterine growth retarded (IUGR) newborns. The higher the brain:body ratio, the more severe the IUGR process and the greater the risk for the brain to be affected. This prompted us to study in human newborns, a cephalization index based on the ratio of head circumference to body weight to express the degree of brain maturity and possible vulnerability in relation to gestational age. The newborn cephalization index was correlated with neurodevelopment. A trend could be delineated; in the later gestational age, the higher the cephalization index reflecting a greater degree of brain vulnerability, the more severe the clinical pathology; especially the likelihood of cerebral palsy and severe psychomotor retardation. The cephalization index may serve as an additional screening device for high risk intrauterine growth retarded newborns. PMID- 3841708 TI - [Etiologic evaluation of deep venous thrombosis: hemostasis tests to perform]. PMID- 3841709 TI - [Immunologic determination of the protein C of coagulation: detection of deficiencies]. AB - Protein C, discovered by Stenflo in 1976, plays a major role in the regulation of thrombogenic processes. Even moderate deficiencies (0.40 to 0.60 U/ml) can be responsible for serious thromboembolic accidents. The authors evaluated the kits for the immunological assay of protein C, produced by Laboratoire Diagnostica Stago: a immuno-enzymatic method (ELISA) and Laurell's method. Despite the very different characteristics in terms of practicability, threshold of sensitivity and precision, the authors obtained an excellent correlation between these two techniques. The concentrations of protein C Ag obtained in 22 normal plasmas were 0.70 to 1.40 U/ml. In 32 patients with recurrent thrombosis with no apparent cause, 5 had a concentration of protein C Ag less than 0.70 U/ml. The identification of a deficiency of protein C Ag (Vitamin K depend protein) is often made difficulty by the fact that the patients are treated with anti-vitamin K drugs. The ratio between the vitamin K depend pro-coagulation factors and Protein C Ag may provide information about a possible deficiency. PMID- 3841710 TI - [Computer-assisted study of suicide attempts]. PMID- 3841711 TI - [Idiopathic myositis of the small intestine. An unusual cause of chronic intestinal pseudo-obstruction in children]. AB - The case reported concerns a child with chronic intestinal pseudo-obstruction (CIPO) whose digestive manifestations (intestinal adynamia and distension) were present from the age of 6 months and lasted, despite medical and surgical treatments until 4 years of age, when death occurred. The multiple samplings showed important inflammatory reactions centred on the muscular layers of the small intestine, together with degenerative lesions of the muscular fibres, progressively leading to fibrosis and atrophy of the intestinal wall with secondary and final impairment of the myenteric plexuses. The diagnosis of myositis of the small intestine is extremely rare. It is not part of the usual causes of intestinal adynamia and CIPO, which were reviewed. Hollow visceral myopathy and systemic sclerosis of the GI tract were more especially discussed. For lack of etiopathogenic convincing data and of similar observation in the literature, this case may be temporarily considered as an idiopathic myositis of the small intestine, a potentially new cause of CIPO. PMID- 3841712 TI - Light and electron microscopic immunohistochemistry on the localization of cytochrome P-450 of the side chain cleavage system and of cytochrome P-450 of 11 beta-hydroxylase in the bovine adrenal cortical cells. AB - In order to know the mechanism of steroid hormone biosynthesis, the localization of cytochromes P-450 of cholesterol side-chain cleavage enzymes (P-450SCC) and P 450 of 11 beta-hydroxylase (P-450(11)beta) were studied in bovine adrenal glands by light as well as electron microscopic immunohistochemistry, using monoclonal antibodies. With light microscopy the cytoplasm of the glomerulosa cells was faintly immunostained, while that of the fasciculata-reticularis cells was intensely immunostained by both monoclonal antibodies for cytochrome P-450SCC and cytochrome P-450(11)beta, though the capsular connective tissue cells and the adrenal medullary cells were entirely negative for these reactions. Electron microscopic immunohistochemistry revealed that the positive reaction products for cytochromes P-450 were present on the matrix side of the inner mitochondrial membrane including the tubulovesicular cristae of the cortical cells, and especially of the fasciculata and reticularis cells. The present results indicate that both cholesterol side-chain cleaving enzymes and 11 beta-hydroxylase are present in the inner mitochondrial membrane of bovine adrenal cortical cells. PMID- 3841713 TI - [Relationship between solid cell nests and focal lymphocytic thyroiditis]. AB - Considering the fact that there is often a combined occurrence of focal lymphocytic thyroiditis (FLT) and so-called Solid Cell Nests (SCN) in the same human thyroid gland, we examined thyroid tissue of 500 routine autopsies. SCN were found in 56 (11.2%) and FLT in 59 (11.8%) patients. The combination of these two lesions was encountered in 18 (3.6%) cases. This incidence (3.6%) is four to five times higher than would be expected from chance alone. In 12 of the 18 patients mentioned, SCN were in close association with lymphocytic infiltration, but this was not statistically significant. Two hypotheses are discussed concerning the combination of SCN and FLT. According to Klinck and Menk (1951), the SCN, derived like the epithelial part of the thymus from the embryologic pharyngeal pouch, forms a favorable micro-environment for inflammatory cells. Based on the second hypothesis, the SCN, probably a remnant of the ultimobranchial body, mark an incompletely developed thyroid. These thyroids would be predisposed to auto-immune thyroid disease such as FLT. PMID- 3841714 TI - Development and application of organic reagents for analysis. V. High-performance liquid chromatographic determination of lipoperoxides in biological fluids with 1,3-diphenyl-2-thiobarbituric acid. PMID- 3841715 TI - Extensive surface changes of Ehrlich ascites tumor cells induced by intracellular Li+. PMID- 3841716 TI - [Isolated non-Hodgkin's malignant lymphoma of the orbit]. PMID- 3841717 TI - [Technic and indications of the Picolas-laser. Preliminary note]. PMID- 3841718 TI - The use of IVF in the management of male infertility. PMID- 3841719 TI - Anorectal disorders. PMID- 3841720 TI - An acromegalic patient with recurrent urolithiasis. AB - A 52-year-old man with an acromegalic appearance of prolonged duration suffered abdominal colic attacks and hematuria during the middle of the course of the disease. The patient was diagnosed as having urolithiasis caused by increased urinary calcium. The calcium metabolic disorder was not considered to be due to hyperparathyroidism because serum calcium and PTH levels were within the normal range and no abnormality was observed in a parathyroidal scintigraph. The serum 1,25-dihydroxyvitamin D (1,25-(OH)2D) levels (55.0 and 73.0 pg/ml) were higher than the normal range (27.2-53.8 pg/ml). A selective adenomectomy by the transsphenoidal route (Hardy's method) was performed, resulting in an improvement in the hypercalciuria and urolithiasis, and a decrease in the levels of serum 1,25-(OH)2D (23.0 and 23.0 pg/ml). These findings suggest that GH may promote the activation of vitamin D in the kidney in acromegaly, resulting in an acceleration of calcium absorption in the intestine through the action of activated vitamin D and the induction of increased urinary calcium excretion by the urinary excretion of excessive blood calcium. PMID- 3841721 TI - [Measurement of the transepithelial gastric potential difference induced by buffered acetylsalicylic acid. Effects of paracetamol and sucralfate]. PMID- 3841722 TI - [Measurement of gastric transepithelial potential difference. Effect of provocative agents (aspirin, alcohol) and gastric dressings]. PMID- 3841723 TI - Klebocine typing and antibiogram study of Klebsiella species. PMID- 3841724 TI - Analysis of chlorophenylmethylsulfides in the urine of rats injected with chlorobenzene by high performance liquid chromatography. PMID- 3841725 TI - Radioimmunoassay for an inhibin-like peptide from human seminal plasma. AB - Antisera raised in rabbits to a synthetic peptide consisting of 31 amino acids with a sequence identical to inhibin-like peptide (ILP) isolated from human seminal plasma afford a highly specific and sensitive radioimmunoassay. Synthetic ILP completely displaces antiserum binding of radioiodinated [Tyr4]-ILP, with half maximal displacement at 36 fmoles ILP/tube. ILP, [Tyr4]-ILP and ILP-(9-31) had essentially equal potency, while ILP-(1-25), ILP-(1-23) and ILP-(1-16) had reduced potency. No cross reactivity was found among a variety of peptide hormones and proteins. Human seminal plasma displaces 50% of [125I-Tyr4]-ILP at dilutions equivalent to 50-250 pl/tube, corresponding to immunoreactive ILP concentration of 0.5-2.5 mg/ml. PMID- 3841726 TI - Graves' disease with neutropenia and marked splenomegaly: autoimmune neutropenia due to propylthiouracil. AB - A 38-year-old man with Graves' disease taking propylthiouracil (PTU) for 6 years developed neutropenia and marked splenomegaly. After subtotal thyroidectomy with discontinuance of PTU the patient remained asymptomatic for the last two and half years. The serum obtained during the period of neutropenia demonstrated opsonic activity to neutrophils of the patient as well as of normal volunteers. This opsonic antineutrophil activity was located in the IgG fraction of the serum. Furthermore, PTU at the concentration (0.1-1.0 micrograms/ml) attainable in the patient's serum significantly stimulated [3H] thymidine incorporation in the patient's lymphocytes. These findings indicate that the patient developed autoimmune neutropenia by producing opsonic antineutrophil antibodies in association with the PTU therapy. PMID- 3841727 TI - Emergency department management of the sexual assault victim. AB - The optimal management of the sexual assault victim involves a multidisciplinary effort on the part of all legal, police, medical, and support personnel who interface in the emergency department. History, general physical examination, and pelvic examination are performed methodically, keeping in mind that the primary goal is to tend to the patient's medical needs. The gathering of evidence proceeds simultaneously with the physical examination. Evidence to be obtained and techniques are reviewed. Treatment entails attention to physical injuries, potential venereal disease and pregnancy, and psychiatric intervention. Management of the male rape victim or child victim of sexual abuse requires special attention to the peculiarities of those problems. PMID- 3841728 TI - Computerization of orthopaedic medical records. PMID- 3841729 TI - Determination of immunoreactive antiarrhythmic peptide (AAP) in rats. AB - A sensitive and specific radioimmunoassay for antiarrhythmic peptide (AAP) has been developed, utilizing 3-(4-hydroxy, 5-[125I]iodophenyl)propionyl AAP and guinea pig anti-AAP serum. Synthetic AAP was used as a standard and the polyethylene glycol method was employed to separate free AAP from antibody-bound AAP. The minimum detectable dose of AAP was 0.2 pmol. In the assay system, immunoreactivity was shown not to be attributable to fragments derived from AAP, gelatin or collagen peptides, which sequences differ only by one amino acid from those of AAP. Immunoreactive (IR) AAP extracted from rat tissues and serum gave parallel dose-response curves to those of AAP. Thus, the AAP equivalents per g or ml of tissues measured in adult male rats were 203 pmol in heart, 166 pmol in kidney, 4 pmol in serum, and 2 to 6 pmol in the other tissues. IR-AAP was separated into two fractions by Sephadex G-25 chromatography. Fr. I was considered to have a larger molecular mass than AAP, while Fr. II appeared to have a molecular mass equal to AAP. Ratios of Fr. II in total IR-AAP were 50% in heart and 10% in kidney, while serum IR-AAP gave only Fr. II. The IR-AAP level in heart showed a positive correlation increase with age in rats. PMID- 3841730 TI - [Clinical review and antibacterial effect of aztreonam in infections in obstetrics and gynecology]. AB - Clinical effect in obstetrics and gynecology was studied on aztreonam (AZT), a potent monobactam antibiotic for Gram-negative bacteria. AZT was tested for 7 cases and effective for all of them with quite a high effective rate of 100%. Neither side effect nor abnormal laboratory findings were noted and it sufficiently proves the property of AZT, a totally chemical-synthesized product with lower incidence of allergic reaction. The above results suggest that AZT is useful for obstetrics and gynecologic infections in view of its high stability to beta-lactamase and dehydropeptidase and high potency against Gram-negative bacteria. PMID- 3841731 TI - [Uterine hemorrhage in newborn infants]. AB - A follow-up was conducted on uterine haemorrhage in all female newborn infants at the Department of Gynaecology and Obstetrics in Novi Sad, in the period from 1 January to 31 December 1979. Of the total of 2477 newborn female infants, 2241 (90.47%) were at-term infants of which 85 (3.79%) had uterine haemorrhage, 126 (5.09%) premature infants of which 1 (0.793) had uterine haemorrhage and 110 (4.443) postmature infants of which 10 (9.09%) had uterine haemorrhage. General frequency of uterine haemorrhage was 3.87%. PMID- 3841732 TI - Anterior leprotic retinitis of trantas: a case report. PMID- 3841733 TI - C-terminal deletion analogs of a crustacean pigment-dispersing hormone. AB - This study deals with the effect of deamidation and C-terminal truncation on the potency of an octadecapeptide pigment-dispersing hormone (PDH: Asn-Ser-Gly-Met Ile-Asn-Ser-Ile-Leu-Gly-Ile-Pro-Arg-Val-Met-Thr-Glu-Ala- NH2), first described as light-adapting distal retinal pigment hormone (DRPH) from Pandalus borealis. Bioassay of synthetic analogs for melanophore pigment dispersion in destalked fiddler crabs (Uca pugilator) showed that deamidation causes a 300-fold decrease in potency. The analogs 1-17 NH2 and 1-16 NH2 were about 3 times more potent than 1-18-OH. Further truncation led to decreases in potency, with the peptide 1-9-NH2 being the smallest C-terminal deletion analog to display activity (0.001% potency). Smaller analogs (1-8-NH2, 1-6-NH2 and 1-4-NH2) were inactive when tested in doses as high as 500 nmoles/crab. On the basis of our earlier work on N terminal deletion analogs and the present findings the residues 6 to 9 seem to be important for PDH action. PMID- 3841734 TI - An immunoradiometric assay for the measurement of neuropeptide Y in plasma. AB - The development of an immunoradiometric assay (IRMA) for the direct measurement of neuropeptide Y (NPY) concentrations in plasma is reported. The assay employs simultaneous addition of 125I-labelled affinity purified sheep anti-(NPY 31-36) immunoglobulin (IgG) and a rabbit anti-NPY serum to 0.25 ml volumes of standard or unknown. After 16 hr incubation at 4 degrees C NPY-bound labelled IgG is precipitated using sheep anti-(rabbit IgG Fc region) IgG coupled to Dynospheres solid phase. Precipitated counts are proportional to the NPY concentration in samples. Using this methodology it is possible to measure basal levels in normal human subjects (range 1-5 fmol/ml). Technical difficulties encountered in raising "site-specific" antisera to NPY during the establishment of this assay are outlined. PMID- 3841735 TI - Paraventricular nucleus injections of peptide YY and neuropeptide Y preferentially enhance carbohydrate ingestion. AB - Neuropeptide Y (NPY) injected into the paraventricular nucleus (PVN) is known to elicit a powerful feeding response in satiated, brain-cannulated rats. The present experiment investigates the effect of peptide YY (PYY), a structurally related peptide, on feeding behavior and, in addition, the effects of both PYY and NPY on the pattern of macronutrient selection. Injection of PYY directly into the PVN, in doses ranging from 7.8 to 235 pmol/0.3 microliters, caused a strong, dose-dependent stimulation of feeding behavior, as well as a small stimulation of drinking behavior, in satiated rats. The mean latency to eat was 9.3 min, with substantial feeding occurring within 30 min of the injection. At low doses, the increase in feeding was seen predominantly during the first hr. At the highest dose, in contrast, food intake continued to increase progressively over the next few hr. such that by 4 hr postinjection food intake was more than 20 g over vehicle baseline. In 1 hr tests with 3 pure macronutrient (protein, fat and carbohydrate) diets simultaneously available, PYY and NPY (78 pmol/0.3 microliters) both elicited a strong and selective increase in carbohydrate consumption, with little or no effect on protein or fat consumption. These results suggest that hypothalamic receptors sensitive to PYY and NPY may participate in the control of carbohydrate consumption. PMID- 3841736 TI - Amphetamine-induced changes in immunoreactive NPY in rat brain, pineal gland and plasma. AB - Acute injection of d-amphetamine (10 mg/kg), administered to rats 60 minutes prior to sacrifice, induced a doubling of immunoreactive NPY (NPY-IR) in pineal gland. No changes, however, could be detected in levels of NPY-IR in grossly dissected or microdissected regions of rat brain, nor were changes evident in plasma level concentrations of NPY-IR following acute amphetamine pretreatment. When amphetamine was injected twice daily for six days and once more 60 minutes prior to sacrifice, levels of NPY-IR were decreased in caudate putamen and the paraventricular and dorsomedial nuclei of the hypothalamus, while concentrations of NPY-IR were increased in medial preoptic nucleus, pineal gland, and plasma. These data indicate that levels of NPY-IR are susceptible to manipulation by amphetamine, where the extent and direction of change (increase or decrease) depends on both the frequency of drug administration and the nature of the sampled tissue. Based on the effects of amphetamine on central and peripheral norepinephrine and epinephrine disposition observed in other studies, the data also suggest that NPY-IR and catecholamine dispositions are not directly correlated and may be inversely related in some tissue. PMID- 3841737 TI - Effect of simulated weightlessness and chronic 1,25-dihydroxyvitamin D administration on bone metabolism. PMID- 3841738 TI - [Regulation of eukaryotic transcription by RNA polymerase II stimulatory factors]. PMID- 3841739 TI - [Pseudo-obstruction of the colon after cesarean section (Ogilvie's syndrome)]. PMID- 3841740 TI - [Ontogeny of pulmonary surfactant]. PMID- 3841741 TI - Human placenta mitochondrial aromatase--fact or artifact. AB - The suggestion has been made that the aromatase system from human placenta converting testosterone to estradiol-17 beta is localized to some extent in the mitochondrial fraction in addition to its microsomal origin. By comparing the characteristics of the "mitochondrial" aromatase with certain particularities of other mitochondrial or microsomal enzymes, especially those functioning in steroid hydroxylation, the conclusion has been reached that the mitochondrial and the microsomal aromatases are one and the same. Thus, in response to ultrasound treatment and in response to the addition of specific cofactors, the mitochondrial aromatase showed all the characteristics attributed to microsomal enzymes and was indistinguishable from the microsomal aromatase. PMID- 3841742 TI - [Morphology and pathogenesis of liver injury produced by dihydralazine , propranolol and ketophenylbutazone]. AB - Morphologically identical liver damage may be caused by dihydralazine (Depressan, Nepresol) and propranolol (Obsidan, Dociton). Among 24 patients with clinical manifestations of drug-induced hepatitis associated with Depressan or Obsidan treatment, liver biopsies in 15 showed drug hepatitic changes with confluent necrosis. In five of these cases this finding was combined with cholangiolitis, in four there was a drug-induced hepatopathy resembling the picture of viral hepatitis. In 20 cases of Ketazon-induced liver damage the biopsy demonstrated toxic hepatosis with or without cholestasis, reactive hepatitis or cholangiolitis. A drug-related hepatitis with central lobular necrosis was observed in one patient with Ketazon-induced liver damage. In 28 patients a lymphocyte proliferation test was undertaken to confirm a causal relationship between the use of either Depressan, Obsidan or Ketazon and the morphologically demonstrated liver damage. The test was positive in 25 cases (18 with Depressan, 2 with Obsidan and 5 with Ketazon). In several uncertain cases, for example, exposure to both Depressan and Obsidan or to Ketazon and Rewodina, the morphologic picture could be attributed to a specific medication by the use of the lymphocyte proliferation test. The results of the lymphocyte proliferation test and the morphologic findings emphasize the role of cell-mediated immune reactions in the pathogenesis of liver damage from dihydralazine, propranolol, and ketophenylbutazone. PMID- 3841743 TI - [Chemical study on a traditional Tibetan drug Hypecoum leptocarpum]. PMID- 3841744 TI - [Isolation and identification of wubangziside C from Polygala caudata Rehd et Wils]. PMID- 3841745 TI - Longitudinal patterns in the development of the cerebellum. PMID- 3841746 TI - Management of inflammatory carcinoma of the breast. A combined modality approach. AB - From May 1973 to December 1981, 63 patients with inflammatory carcinoma of the breast were treated with a doxorubicin-containing chemotherapy regimen (FAC). After a median of three cycles of FAC, 41 patients received primary therapy with irradiation; more recently, 21 had mastectomy as primary therapy. One patient relapsed following a treatment delay and did not receive local therapy. Fourteen of 21 patients who underwent mastectomy had subsequent consolidation therapy with irradiation. At median follow-up of 60 months, median relapse-free survival (RFS) and survival were 24 and 43 months, respectively. The initial site of recurrence was locoregional in eight patients (20%). In addition, two of seven uncensored patients (18%) who suffered initial recurrence in the contralateral breast remained disease-free at 28 and 55 months with further surgery. While no locoregional recurrences were seen in the 14 mastectomy patients who completed comprehensive irradiation, no RFS nor survival advantage was noted for either initial local therapy. Sixteen patients with dermal lymphatic carcinomatosis and 10 patients with negative skin biopsies had median RFS of 31 and 46 months, respectively (p = 0.45). Median RFS was 36 months in patients greater than or equal to 50 years of age and 19 months in patients less than 50 (p = 0.05). Response to FAC was the most significant predictor of RFS and survival. Patients who achieved complete or partial remission (PR) with induction FAC as compared to patients who achieved less than PR had median RFS of 31 vs. 19 months (p = 0.01) and median survivals of 60 vs. 27 months (p = 0.05), respectively. Categorization of patients according to clinical, mammographic, and pathologic criteria facilitated identification of potential long-term responders. With combined modality approach to inflammatory carcinoma of the breast, we can expect an estimated 31% of patients to be relapse-free at 5 years after treatment. PMID- 3841747 TI - [Use of the calculation of anthropometric values with microprocessors for nutritional diagnosis]. AB - The purpose of this work was to determine the possibility of establishing the most accurate nutritional diagnosis based on anthropometric information in school boys and girls (6 to 14 years), from Madrid (Spain). To carry out this work two well-trained anthropometrists obtained data of total and kneeling height, cephalic and thoracic circumference, and weight from an aleatory sample of 333 boys and girls who study at a national school in Madrid. The collected data presented and analyzed, served as a basis to calculate the fitting equations of each anthropometric variable according to age and sex, as well as some relation among them. Their use simplifies the obtention of the biometric reference values, and allows precise interpolations for concrete ages. All of these algorithms have been translated into BASIC sentences to facilitate its incorporation into any microprocessor. A first diagnostic pattern of the past and present nutritional history of children according to their age and sex, total and kneeling height and weight of each one of them is also presented. The BASIC program, necessary to incorporate it into computers, is included as well. PMID- 3841748 TI - The use of ivermectin to cleanse tick infested cattle. PMID- 3841749 TI - Drug and environmentally induced manipulations of the opiate and serotonergic systems alter nociception in neonatal rat pups. AB - The influence of drug- and environmentally induced alterations in serotonergic and opiate activity on pain sensitivity was assessed in 6-day-old Sprague-Dawley derived rat pups using tail flick-testing procedures. The opiate agonist morphine was observed to induce tail flick analgesia that was blocked by concurrent administration of the opiate antagonist naloxone. Similarly, the serotonergic agonist quipazine induced analgesia that was blocked by pretreatment with the serotonergic antagonist metergoline. Naloxone alone did not alter tail flick responsivity in non-isolated, nondeprived neonates, suggesting that the opiate system may not exert a significant tonic inhibition of pain sensitivity in neonates. In contrast, the serotonergic system may exert some tonic analgesic influence at this age, given that metergoline was observed to induce slight hyperalgesia in nondeprived, non-isolated neonates. Twenty four hours of food and maternal deprivation, shown previously to increase brain serotonin and 5 hydroxyindole acetic acid and their ratio in neonates (L. P. Spear & F. M. Scalzo, 1984, Developmental Brain Research, in press) was observed to induce tail flick analgesia, an effect blocked by metergoline. Isolation from siblings and the dam and nest for 30 min also induced tail flick analgesia; this analgesia was blocked by treatment with naloxone prior to testing. Together, these experiments support the suggestion that the serotonergic and opiate systems may regulate pain sensitivity even in neonatal rat pups, with agonist- or environmentally precipitated increases in serotonergic or opiate activity inducing significant analgesia during the early postnatal period. PMID- 3841751 TI - [Use of a microcomputer for the surgical planning of strabismus. I. Exotropia]. PMID- 3841750 TI - The epidemiology of cervical neoplasia. AB - Controversial topics in the epidemiology of cervical neoplasia are reviewed, in the light of data from studies conducted in Italy and indications from the literature. The downward trends registered over the last three decades in mortality from cervical cancer seem to be levelling off in the younger age groups (below age 45). This may be partly due to changes in sexual habits in younger women, but is certainly attributable to deficiencies in cervical screening. Pap smear, in fact, strongly reduces the risk of cervical neoplasia, the protection (as suggested by data from a case control study), being long lasting (over five years and perhaps around 10-15 years) for invasive cancers. The results of the same case-control study indicate that, although women with pre-invasive and invasive conditions seem to share several unspecific indicators of sexual habits (i.e., total number of partners and age at first intercourse), they appear to differ with regard to clinical history of specific venereal disease. In fact, genital warts, herpes genitalis and trichomoniasis were more frequent in cases of intraepithelial neoplasia, but not of invasive cancer. The implications of these findings, and of other controversial points in the epidemiology of cervical neoplasia, such as oral contraceptives, cigarette smoking and diet, are discussed with regard to indications from other disciplines (chiefly molecular hybridization and stochastic models of carcinogenesis). PMID- 3841752 TI - Hashimoto's thyroiditis and carcinoma of the thyroid gland. AB - Seven cases of Hashimoto's disease (HT) occurring in association with carcinoma of the thyroid gland are presented. The diagnosis of HT was not reached before surgery in any of the cases; it was an incidental histopathological finding. There was no case of pure papillary cancer: two specimens showed mixed papillary and follicular cancers, four revealed follicular carcinomas (one of them with anaplastic areas) and one medullary neoplasm. Other authors, however, have reported that pure papillary carcinoma occurred with significantly greater frequency in thyroids also displaying Hashimoto's disease. Total thyroidectomy was performed in all seven patients and one patient with anaplastic follicular cancer also received external irradiation. TSH suppressive therapy was given postoperatively. All these patients are alive with no evidence of further disease after seven to 17 years of follow-up study, whereas the mortality in our total series of thyroid cancers, even in patients with low-grade malignancy, was about 9%. Thus the prognosis of patients with carcinoma of the thyroid gland with coexisting Hashimoto's disease is better than that of patients with carcinoma of the thyroid gland alone. Hashimoto's thyroiditis does not seem to be a premalignant lesion. There was no evidence suggesting that thyroid carcinoma originated in the proliferating epithelium of Hashimoto's thyroiditis. It would appear that thyroid carcinoma stimulates the development of HT in some patients and that the presence of the autoimmune inflammatory reaction and the circulating antibodies retard growth and dissemination of carcinoma of the thyroid gland. PMID- 3841753 TI - Paediatric anaesthetic management with the aid of a computer. AB - A computer program has been developed to assist in the preparation of proper drug and anaesthetic doses for children. An individualized reference sheet containing the doses of the more commonly used drugs for the induction and maintenance of anaesthesia, fluid requirements, blood volume information, ventilatory variables, estimated endotracheal tube sizes and emergency drug doses constitutes the output of this program. The importance of such a computer program in improving paediatric anaesthetic management is discussed. PMID- 3841754 TI - Monitoring hypoxia. AB - The use of extensive monitoring approaches in patients with various forms of hypoxic disease has flourished extensively during the past decade. When coupled to advanced computer technology, the capacity for generation and storage of data has increased enormously. In addition to clinicians and biomedical scientists, the field has attracted engineers and computer scientists. Most of these developments have occurred without adequate evaluation of the impact of these efforts on the safety and effectiveness of patient management. Moreover this expansion has occurred without a predesigned structural format for either evaluation or for quality control of the various monitoring modalities. Two basic assumptions are widely accepted: 1) That massive data collection is automatically useful; and 2) Monitoring coupled to computerization necessarily leads to better outcome for patients. This paper will challenge both of these assumptions by providing an analysis of monitoring generally with special emphasis on hypoxia. In addition it will describe some current developments in the monitoring of hypoxia. PMID- 3841755 TI - A personal computer system for testing gas exchange, heart, lungs, ventilatory pump. AB - This paper reports the development of a computer system for testing gas exchange and lung function in the ICU. The essence of the system is a software package that uses an IBM personal computer for data processing and analysis. Front end hardware is modular, as is software, so that portions or all of the system can be used. The system provides measurements of lung mechanics work, functional residual volume, spirometry, oxygen uptake, carbon dioxide output, lung water, blood gas interpretation, hemodynamics. Reports are provided by standard data base manager and so are easily customized. PMID- 3841756 TI - Microcomputer database software for medical information management. AB - Commercial software intended primarily for business applications may be used for medical information management. An inexpensive database may be established quickly and independently by busy clinicians working with limited resources. Desirable software features are discussed. A summary of 14 commercial data handling program packages is given. PMID- 3841757 TI - A model for red cell O2 uptake. AB - A computer model for red cell O2 uptake in the pulmonary capillary circulation is described. New features include the effect of hematocrit on blood viscosity and cardiac output and the precise modeling of the hemoglobin-O2 saturation curve as it varies with pH, the 2,3-DPG/Hb molar ratio, and PCO2 during oxygenation. The model is useful in the integration of many interacting physiologic variables that regulate O2 transport. PMID- 3841758 TI - Simulation of oxygen delivery to tissues: the role of the hemoglobin oxygen equilibrium curve at altitude. AB - A simplified model is described to estimate the oxygen delivery to tissues as a function of oxygen uptake, gas exchange ratio, 2,3-DPG/Hb concentration ratio, arterial and venous PO2, PCO2 and pH. Due to the complexity of the oxygen delivery system, the aim of this model is to predict relative changes of the oxygen delivery to tissues induced by changes of the other variables, rather than to yield absolute values. In this work, the importance of the observed shifts of the hemoglobin oxygen equilibrium curve at altitude is evaluated in terms of the efficiency of the oxygen transport system. It will be shown that a rightward shift of the oxygen equilibrium curve is beneficial up to 5400 m.a.s.l., while for higher altitudes such shifts lead to less efficient oxygen delivery to tissues. PMID- 3841759 TI - Intestinal radiocalcium transport versus urinary calcium excretion in long-term 1,25(OH)2D3 treatment. PMID- 3841760 TI - Concentrically arranged endoplasmic reticulum containing some lamellae (bar-like structure) in alveolar type II cells of rat lung. AB - We examined in vivo the effect of pilocarpine (a cholinergic agent) and cycloheximide (an inhibitor of protein synthesis) on the "bar-like structures" in alveolar type II cells of rat lung to clarify their origin and significance in pulmonary surfactant production and secretion. Lungs were examined with an electron microscope using ultrathin sectioning, freeze-fracture technique, and morphometry. The bar-like structures in type II cells consisted of a concentrically arranged endoplasmic reticulum containing some amount of osmiophilic periodic material similar to the lamellae of lamellar bodies. Pilocarpine induced the accumulation of lamellar bodies of normal size which paralleled the increase in the number of bar-like structures in the cytoplasm of the type II cells. Cycloheximide induced a decrease in size of the lamellar bodies and an enlargement of the bar-like structures. Our morphological findings suggest that: The phospholipid that would normally be incorporated into the lamellar bodies might be sequestered instead in the concentrically arranged endoplasmic reticulum, forming the bar-like structures, and The enlargement and the increased number of bar-like structures may be responsible in part for the changed metabolic process of surfactant production by alveolar type II cells. PMID- 3841761 TI - Collaborative Behavioral Teratology Study: programmed data entry and automated test systems. AB - The automated laboratory systems described in this paper were developed for use at the National Center for Toxicological Research (NCTR) and each of five collaborating laboratories. These laboratories participated in a study designed to evaluate the intra- and interlaboratory reliability and sensitivity of several behavioral test methods used in developmental toxicity studies. This paper describes two microcomputer systems. System I was designed to control stimulus delivery to and record behavioral responses from rats during a visual discrimination learning task and to accept data from physical landmark, negative geotaxis, and olfactory discrimination evaluations. The microprocessor system was an S-100 bus, Z-80 processor with 8K PROM, 16K RAM, nine 8-bit parallel I/O ports, and one serial I/O port. For discrimination learning, the animal testing apparatus consisted of six operant chambers, equipped with two stimulus lights, two nose-poke apertures each containing a phototransmitter and receiver, an electromechanical liquid dispenser unit, and a reward bowl also containing a photodiode. Each chamber was interfaced with the microprocessor at a parallel I/O port which permitted the delivery of response- or time-contingent control signals for the lights and liquid dispenser units. System II controlled stimulus delivery and recorded behavioral responses from rats during an auditory startle habituation task, and also recorded rodent activity levels in figure 8 mazes for periods of 1, 4, or 23 hours. The microprocessor system was an S-100 bus, Z-80 processor with 8K PROM, 16K RAM, nine parallel I/O ports, an analog to digital (A/D) I/O board, and one serial I/O port.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841762 TI - Splenic growth rates in cirrhotic and other splenomegalic diseases of childhood. AB - The weights of the spleens of series of patients with various disorders of children dating from birth or early infancy and causing splenomegaly, with or without cirrhosis of the liver, were analyzed. The linear regression equation for spleen weight versus age in months for each disease was derived, and the rate constants from these equations were adjusted for the age range of the patients in each group. The original data of Coppoletta and Wolbach were used for normal values. The rates of splenic growth of appropriate entities for which the regression equation could be computed fell into three groups, with adjusted rate constants (growth of spleen in grams per month) of 6.53-6.95 (biliary atresia, thalassemia, and cirrhosis following neonatal hepatitis), 2.30-2.62 (cirrhosis of alpha-1-antitrypsin deficiency, infantile polycystic disease, and spherocytosis), and 1.06-1.11 (cystic fibrosis and idiopathic thrombocytopenic purpura). These classes of splenic growth rates are approximately 10, 3.7, and 1.6 times the normal growth rate (0.67 g/mo). Rate constants could not be computed for the categories cirrhosis following viral hepatitis and hemolytic anemia other than spherocytosis and sickle cell anemia, and the numbers of patients with splenic vein obstruction, cirrhosis with the cholestatic syndrome of parenteral alimentation, hypoplastic anemia with hemosiderosis, tyrosinemia, Byler's disease, congenital hepatic fibrosis, and Wilson's disease were too few for analysis. The significance of the finding of classes or "quantum groups" of splenic growth rates in disorders of children, dating from birth or early infancy and causing splenomegaly, is uncertain. Comparable data on adequate series of patients with other appropriate disorders will be necessary. PMID- 3841763 TI - Cis-platinum-adriamycin-cyclophosphamide in the treatment of advanced-recurrent cervical cancer. AB - Twenty-two patients with advanced or recurrent cancer of the cervix treated with cis-platinum, adriamycin and cyclophosphamide were evaluated. Nine of 22 (41% achieved objective response (2 CR + 7PR), 9/22 (41%) stable disease, 4/22 (18%) progressive disease. The mean duration of response was 24.6 weeks, with a range of 18-28 weeks. Patients with poorly differentiated histologic grade and without previous treatment had better response rates. Responders had longer survival (mean 63.5 + weeks) than nonresponders (mean 30.5 weeks). Commonly encountered toxicities were alopecia, nausea and vomiting, and leucopenia, which were all tolerable. PMID- 3841764 TI - [Hodgkin's lymphoma in children: results of treatment with the MOPP protocol and a combination of radiotherapy and chemotherapy]. PMID- 3841765 TI - In vitro studies using ion exchange resins as potential phosphate binders for renal failure patients. AB - The uptake of phosphate [expressed as phosphorus (P)] by the anion exchange resins, Dowex 1-X8, Dowex SBR, and Bio-Rex 5, aluminum hydroxide, and sucralfate tablets was evaluated. The maximum uptake capacities (in mg P per gram of "wet" resin or solid) were 56, 49, and 84 mg for Dowex SBR, Dowex 1-X8, and Bio-Rex 5 resins, respectively, and 164-168 mg for aluminum hydroxide and sucralfate. At a concentration of P considered to approximate that encountered in the stomach (0.3 mg/ml), Bio-Rex 5 resin, aluminum hydroxide, and sucralfate bound similar amounts of P. Physiologic concentrations of bicarbonate or chloride and simulated gastric or intestinal fluids caused small changes in P uptake by Bio-Rex 5 resin. The resins bound large quantities of taurocholic (TA) and glycocholic (GA) acids. However, when Bio-Rex 5 was converted to the taurocholate form, it bound the same amount of P as the original chloride-form resin, and the binding of TA was prevented. PMID- 3841766 TI - [The structure determination of a new alkaloid nauclefiline in Nauclea officinalis]. PMID- 3841767 TI - [Isolation and identification of three new alkaloids from the roots of Alstonia yunnanensis Diels Indiana, USA]. PMID- 3841768 TI - [Structures of spirasine IV, spirasine IX and spirasine XI, three new diterpene alkaloids from Spiraea japonica L. f. var. fortunei (phanchon) Rehd]. PMID- 3841769 TI - [Separation and identification of N-demethylvancomycin]. PMID- 3841770 TI - Mycotic aneurysm of thoracic aorta as a cause of haemoptysis. Role of dynamic CT scanning. PMID- 3841771 TI - [Computerized analysis of heart electric signals during the exertion test]. PMID- 3841772 TI - Cytopathology of follicular lesions of the thyroid gland. AB - Fine needle biopsy is generally considered unreliable in the differential diagnosis of follicular lesions of the thyroid gland. To test this hypothesis, we correlated fine needle biopsy diagnoses with surgical diagnoses in 379 follicular lesions. From nuclear characteristics (especially size) and the architectural pattern of tissue fragments, the following observations were made. Differentiation of goiters (including hyperplastic ones) from neoplastic thyroid disease is quite accurate and no more than 1 to 2% of cancers should be missed. The specific cytologic diagnosis of follicular carcinoma is 75% accurate, and that of follicular variant of papillary carcinoma is over 95% accurate. Of histologically proved follicular carcinomas, almost three-quarters should be diagnosed as such or strongly suspected by fine needle biopsy. The remainder will be identified as cellular follicular adenomas, reaffirming the overlap of cytologic features of benign and malignant neoplastic disease. From cytologic and surgical pathologic data for each fine needle biopsy diagnosis of follicular lesion, a probability of cancer can be stated that is useful in management decisions. PMID- 3841773 TI - Computerized assessment of self-monitored blood glucose results using a Glucometer reflectance photometer with memory and microcomputer. AB - A microcomputer software package to receive, analyse, and present blood glucose/time information has been developed. Data input is accomplished automatically via interface to Glucometer reflectance photometer instruments which have been specially modified to retain glucose/time results by addition of a clock and electronic memory. This new development in self-monitoring of blood glucose (SMBG) has a number of advantages. It allows the rapid and meaningful analysis of large quantities of patient generated data to assess short- and long term trends in BG patterns, and eliminates the tedium and possible errors of manual graphing. Patients were most interested in the positive feedback provided. The system has considerable potential in patient diabetes education and management. PMID- 3841774 TI - The normal range of the plasma immunoreactive glucagon level during a 75 g oral glucose tolerance test. AB - In order to establish a normal value of plasma glucagon immunoreactivity (GI) and glucagon-like immunoreactivity (GLI) during a newly adopted 75 g OGTT, 50 normals (N), 102 individuals with IGT and 20 diabetics (D) were subjected to the OGTT, and their plasma GI and GLI levels were determined at various intervals by radioimmunoassay using 2 kinds of the C-terminal region specific antibody, OAL123 and 30K, and of the antibody specific for the N-terminal and/or central region of glucagon, OAL196, respectively. The basal levels of OAL123-GI and 30K-GI and OAL196-GLI in the 3 groups were as follows; N, 114.3, 80.8, and 335.5; IGT, 107.6, 76.1, and 338.5; and D, 135.7, 76.9, and 342.2 pg/ml. After glucose administration, a significant decrease in plasma GI and increase in plasma GLI were observed in the 3 groups, although their changes from the basal levels were variable. The plasma samples of inexplicably high GI concentration were chromatographed to clarify the nature of the hyperglucagonemia. The apparent GI was mostly eluted in the Vo component, but negligibly at the 3500 mol.wt. glucagon fraction. There was a marked difference in the Vo peak depending upon the antiserum used. These facts suggest that plasma GI values are dependent on the amount of BPG present in particular samples, and the antibody used. PMID- 3841775 TI - Use of antisecretory drugs for gastroprotection during antiblastic chemotherapy. AB - Both prednisone and cytostatic drugs have an ulcerogenic effect on digestive mucosa. The protective action of the antisecretory drugs pirenzepine and ranitidine are compared against gastroduodenal lesions induced by antiblastic therapy. Twenty patients affected with lymphoproliferative disorders were endoscopically examined: none of them suffered from gastric or duodenal peptic ulcers or erosions. Ten out of the 20 patients received pirenzepine 100 mg/die/p.o. and the other 10 received ranitidine 300 mg/die/p.o. The study was performed according to a double-blind, randomized sequence. The antisecretory medication was administered together with antitumoral therapy for periods of 3-6 months. Four patients died of haematological complications before the course of treatment was completed. A further endoscopic examination was performed at the end of treatment: no patient showed evidence of gastric or duodenal peptic ulcers or erosions. Among the pirenzepine-treated cases, 1 out of the 7 evaluable patients showed a histological worsening of a pre-existing gastritis, while a slight duodenitis was observed in 1 out of the 9 ranitidine-treated patients. The comparable effectiveness of the two drugs is probably related to their antisecretory action, but cytoprotective mechanisms cannot be excluded. PMID- 3841776 TI - Principles of gerontology for osteopathic medical students. PMID- 3841777 TI - A computerised experimental file. AB - A commercially available program which integrates word processing, spreadsheet, data base, and graph facilities, is used on a microcomputer to write a proforma for an experimental file. The proforma file contains empty forms for all envisaged documentation collected during the experiment's duration. This includes an outline protocol, cost estimate, literature search, detailed protocol, data collection forms, project account, and final report. The program allows linking of spreadsheets, thus for instance enabling date and time information entered on the daily log of events to be automatically transferred to the labour cost form. Introduction of this concept has greatly reduced the amount of time spent on research documentation and the risk of data adulteration through repeated transcription. It has also improved control over research expenses and standardization of trial document formats. PMID- 3841778 TI - Interaction of tryptophan with lecithin liposomes: NMR and turbidity studies. AB - A study on the interactions between tryptophan (Trp) and dipalmitoylphosphatidyl choline (DPPC) liposomes conducted with the NMR technique and taking turbidity measurements is reported. Trp is shown to be incorporated into the bilayer only when interaction occurs above gel-liquid transition. Disappearance of turbidity changes at the phase transition temperatures are shown to occur with Trp incorporation. 1H and 13C NMR relaxation times T1 of DPPC are seen to be reduced. Acyl chain signal intensity is shown to decrease and the corresponding line-width to increase as a function of Trp concentration. DPPC 31P [1H] Nuclear Overhauser Effect (NOE) is depressed by the presence of Trp above gel-liquid transition temperature whereas NOE remains high below phase transition temperature when Trp is present in the bilayer. Effects are shown to be the same in both H2O and in 2H2O. A membrane modification that may account for the previously observed inhibition of polysaccharide induced cell aggregation is hypothesized. PMID- 3841779 TI - Tobacco smoking and the pulmonary surfactant system. AB - To explain enhanced retention of water insoluble gases and water insoluble particulate matter (tar)when smoke is inhaled we propose that these compounds interact physically with phospholipids forming the mono-molecular layer of surfactant lining the alveolar epithelium. This would account for the alteration in surface tension lowering properties of surfactant when exposed to whole smoke but not gas phase. Also it explains the observed reversible reduction in 'free' surfactant as opposed to cellular contained surfactant in smokers. Surfactant levels improve rapidly on abstinence from smoking and the time course of this improvement follows closely the reduction in alveolar epithelial permeability to a small hydrophilic molecule of diethylene triamine penta acetate (DTPA) and the improvement in homogeneity of ventilation as measured by the slope of alveolar washout (a measure of elusta properties of the peripheral airspaces of the lungs). PMID- 3841780 TI - Congenital protein C deficiency. PMID- 3841781 TI - Gene analysis in thalassemia: molecular defects of delta beta- and beta thalassemias. PMID- 3841782 TI - Other hereditary hemolytic anemias: with special reference to erythroenzymopathies. PMID- 3841783 TI - [The shape factor of the human skull in the vertical norm]. PMID- 3841784 TI - [Method for calculation in personal computers of expected values of anthropometric variables on body composition]. AB - A program to incorporate in any personal computer (microprocessor) with BASIC language, is herein proposed. This enables calculation of the expected values (50 percentile), and the range of "allowable" variables (3 and 97 percentiles) of the bicipital, tricipital and subscapular cutaneous skinfold thickness, and of the arm's circumference in 6 to 14-year-old boys and girls. It is easily modifiable so as to apply it to other population sectors, and also makes an anthropometric diagnosis. The program facilitates the handling and interpretation of some current biometric variables related to body composition, which are necessary for the full analysis of the actual nutritional status, both of individuals and of population groups. PMID- 3841785 TI - [In vivo digitized 3-dimensional anatomy: a recent advance]. PMID- 3841786 TI - [Pulsed YAG lasers with a variable convergence-divergence angle]. PMID- 3841787 TI - [The YAG laser and treatment of glaucoma. Experimental study and practical indications]. PMID- 3841788 TI - [In vitro YAG-laser trabeculotomy. Anatomo-pathological study]. PMID- 3841789 TI - Comparative in vitro and in vivo activity of cefminox (MT-141), cefotaxime and cefoperazone against gram-negative bacteria. AB - Against 17 Gram-negative bacteria, excluding Proteus species, the difference between cefminox and cefotaxime was significant in terms of MIC distribution, in favour of cefotaxime, but was not significant in terms of ED50 distribution. Against 22 Proteus species, the difference between cefminox and cefotaxime was not significant in terms of MIC distribution, but was significant for ED50 distribution, in favour of cefminox. The difference between cefminox and cefoperazone was not significant for either MIC or ED50 distribution against 17 Gram-negative bacteria, but was significant against 22 Proteus species, in favour of cefminox. The distribution of rank of the ED50/MIC ratios for cefminox was significantly lower than those for cefotaxime and cefoperazone, indicating that cefminox showed lower ED50 values than expected from the MIC values. PMID- 3841790 TI - Plasma and synovial fluid concentrations of isoxicam in meniscectomized patients. AB - Concentrations of isoxicam in the plasma and synovial fluid of 7 patients were investigated by means of high-pressure liquid chromatography. The samples were collected after 7 days' treatment with a single 200 mg isoxicam capsule taken each morning. A highly significant correlation was found (r = 0.82; p less than 0.05) between isoxicam concentrations in the plasma and in the synovial fluid. The mean concentration (+/- s.d.) was 25.54 +/- 10.91 micrograms/ml in the plasma and 17.47 +/- 6.54 micrograms/ml in the synovial fluid; the ratio between isoxicam concentrations in the synovial fluid and in the plasma was 71.06% +/- 18.83. PMID- 3841791 TI - The Caenorhabditis elegans vitellogenin gene family includes a gene encoding a distantly related protein. AB - While the nematode Caenorhabditis elegans is more primitive than most egg-laying organisms, it's vitellogenins, or yolk protein precursors, appear to be more complex. C. elegans oocytes accumulate two major classes of yolk proteins. The first consists of two polypeptides with an Mr of about 170,000 (yp170A and yp170B) encoded by a family of five closely related genes called vit-1 through vit-5. The second class consists of two smaller proteins with Mr values of 115,000 (yp115) and 88,000 (yp88) which are cut from a single precursor. Here we report the cloning and analysis of a single-copy gene (vit-6) that encodes this precursor. The lengths of the gene and its mRNA are about 5 X 10(3) base pairs. Like vit-1 through vit-5, vit-6 is expressed exclusively in adult hermaphrodites. Comparison of portions of the coding sequence indicates that vit-6 is distantly related to the vit-1 through vit-5 gene family. Thus, even though the two classes of yolk proteins are antigenically and physically distinct, they are encoded by a single highly diverged gene family. PMID- 3841792 TI - Dependence of liver-specific transcription on tissue organization. AB - When the liver is disaggregated and hepatocytes are cultured as a cellular monolayer for 24 h, a sharp decline (80 to 99% decrease) in the transcription of most liver-specific mRNAs, but not common mRNAs, occurs (Clayton and Darnell, Mol. Cell. Biol. 2:1552-1561, 1983). A wide variety of culture conditions involving various hormones and substrates and cocultivation with other cells failed to sustain high rates of liver-specific mRNA synthesis in cultured hepatocytes, although they continued to synthesize common mRNAs at normal or elevated rates. In contrast, when slices of intact mouse liver tissue were placed in culture, the transcription of liver-specific genes was maintained at high levels (20 to 100% of normal liver). Furthermore, we found that cells in the liver could be disengaged and immediately reengaged in a tissue-like structure by perfusing the liver with EDTA followed by serum-containing culture medium. Slices of reengaged liver continued to transcribe tissue-specific mRNA sequences at significantly higher rates after 24 h in culture than did individual cells isolated by EDTA perfusion followed by culturing as a monolayer. Therefore we conclude that a mature tissue structure plays an important role in the maintenance of maximum tissue-specific transcription in liver cells. PMID- 3841793 TI - Liver-specific RNA metabolism in hepatoma cells: variations in transcription rates and mRNA levels. AB - The transcription rate and abundance of several liver-specific mRNAs as well as mRNAs common to many cell types were compared in a series of rodent hepatoma cell lines, normal liver cells, and primary hepatocyte cultures. The rat hepatoma cell line, Fao, which displays a liver-specific phenotype, contained eight of eight liver-specific mRNAs examined. However, the transcription rates of most liver specific mRNAs were found to be low (1 to 30%) compared with normal liver in this and other differentiated cell lines. This low rate is similar to the transcription rates of liver-specific mRNA sequences measured in primary cultures of hepatocytes. Several variant cell lines that had lost differentiated traits contained few or none of the liver-specific mRNAs; clonal descendents which had regained differentiated function regained the tissue-specific mRNAs as a group, but at various concentrations. Because all of the changes observed in mRNA levels were not accompanied by parallel changes in transcription of the same sequences, differential posttranscriptional stabilization of the liver-specific mRNAs must also occur in the different cell lines. These results qualify the utility of cultured cell lines in the study of tissue-specific transcriptional control, but raise the possibility that posttranscriptional mechanisms act in cooperation with transcriptional controls to bring the level of tissue-specific mRNAs closer to those found in liver cells. PMID- 3841795 TI - [Bronchial hyperreactivity. III. Clinical manifestations]. AB - Bronchial hyperreactivity is a common report in several respiratory tract diseases such as bronchial asthma, chronic bronchitis and cystic fibrosis. Atopic patients and children who suffered lung diseases in early life (laryngotracheobronchitis, bronchiolitis, bronchopulmonary dysplasia) may have also persistent abnormalities in pulmonary function that frequently include bronchial hyperreactivity. A review of the actual literature, specially concerning with the clinical aspects of bronchial hyperreactivity in children and with the possible etiopathogenetic mechanism is presented. PMID- 3841796 TI - Development of an animal model of alcohol dependence. PMID- 3841794 TI - Differential regulation of trypsinogen mRNA translation: full-length mRNA sequences encoding two oppositely charged trypsinogen isoenzymes in the dog pancreas. AB - In the absence of changes in functional mRNA levels, stimulation of the pancreas with caerulein, a peptide analog of cholecystokinin, has been previously shown to increase the synthesis of anionic but not cationic trypsinogen. To look for structure-function correlations, a high-yield, full-length cDNA library has been constructed from canine pancreatic poly(A)+ mRNA. Full-length clones coding for the two major trypsinogen isoenzyme forms have been identified by colony hybridization and verified by in vitro translation of hybrid-selected mRNA in the presence of microsomal membranes and an optimal redox potential. Disulfide-bonded translation products were separated and identified by two-dimensional isoelectric focusing-sodium dodecyl sulfate-gel electrophoresis. Nucleotide sequence analysis allowed us to deduce the amino acid sequences for the anionic and cationic forms of canine trypsinogen, which contain 232 and 231 residues, respectively (77% amino acid identity), and the 15-residue amino terminal signal sequences (53% amino acid identity) associated with the two presecretory forms. Measurements of relative and absolute mRNA levels, when related to relative protein synthesis values, indicated that the translational efficiency of anionic trypsinogen mRNA exceeded that of cationic trypsinogen mRNA by 1.5- to 2.9-fold under basal conditions. Analysis of the 5' noncoding regions of trypsinogen mRNAs revealed a striking conservation of sequence (10 of 12 bases) between dog and rat anionic trypsinogen forms. This contrasted markedly with the divergence of the 5' noncoding regions observed between dog anionic and cationic trypsinogen mRNAs. PMID- 3841797 TI - [Symposium: New therapeutic perspectives: autoimmunity in endocrinology]. PMID- 3841798 TI - [Pulsed Yag lasers in ophthalmology: theory and description]. PMID- 3841799 TI - Spinal versus intraventricular chronic opiate administration with implantable drug delivery devices for cancer pain. AB - Early publications have separately reported the efficacy, specificity and conservative character of direct spinal and intraventricular morphine analgesia in the treatment of intractable cancer pain. The objectives of this study are to compare efficacy and safety of these sites of local administration in order to determine the indication for each, the clinical effects of different opiates and the choice of various drug administration devices. PMID- 3841800 TI - Therapeutic approach to the Pancoast pain syndrome. AB - The incidence of the Pancoast syndrome ranges from 2 to 5% of patients with lung cancer. We treated 20 cases between 1979 and 1984 with 29 procedures including percutaneous cordotomy, selective posterior radiculotomy, decompressive laminectomy, central administration of opiates, and TENS. Selective posterior radiculotomy gave the best pain relief. PMID- 3841801 TI - Pathology of thyroid disorders. PMID- 3841802 TI - The role of alveolar surfactant in the development of high altitude pulmonary oedema. PMID- 3841803 TI - Variable persistence of the contagious equine metritis organism in the genital tract of CBA/J, CBA/N, LAF1/J, BALB/c and congenitally thymus-deficient (nude) mice. AB - Five inbred strains of mice, CBA/J, CBA/N, LAF1, BALB/c and congenitally thymus deficient nude mice of BALB/c background, varied considerably in their susceptibility to the contagious equine metritis organism (CEMO). Whereas all the strains were virtually refractive to vaginal challenge, LAF1 and CBA/N mice were readily infected by intra-uterine inoculation. Based on infection rate and nature of the bacteriological response, CBA/N mice appeared the more susceptible of the 2 strains. Attempts to transmit CEMO to thymus-deficient nude mice were unsuccessful by both of these routes of challenge and by intraperitoneal inoculation, indicating that host resistance to the causal agent is independent of thymus-mediated immune phenomena. No clinical evidence of infection was observed in any of the experimentally infected mice. Although persistence of CEMO in the female reproductive tract varied widely, it could be isolated from some of the CBA/N mice for as long as 19 weeks after challenge by the intra-uterine route. The organism was cultured from the ovaries and/or oviducts of a high percentage of one group of CBA/N mice after 50 days, when it could no longer be recovered from the remainder of the genital tract. Limited attempts to achieve venereal transmission of CEMO between culture-positive female and companion male CBA/N mice were unsuccessful. The relative susceptibility of the CBA/N strain of mice to CEMO would suggest that host resistance to this infection is at least partly dependent on the presence of a fully functional B lymphocyte system. Further studies in this experimental model may elucidate some of the immunological mechanisms underlying development of resistance in the horse, more specifically as they relate to the occurrence of the carrier state in this disease. PMID- 3841804 TI - Inhibitory effect of zinc(II) on free radical lipid peroxidation in erythrocyte membranes. AB - New evidence in support of zinc's role as a membrane antioxidant is presented. Human erythrocyte membranes in buffered saline underwent catalase- and superoxide dismutase-inhibitable lipid peroxidation when incubated with xanthine, xanthine oxidase, and Fe(III). Free radical mediated peroxidation was measured in terms of thiobarbituric acid reactivity and iodometric determination of lipid hydroperoxides. Whereas Ca(II) had relatively little effect on lipid peroxidation, Zn(II) strongly inhibited the reaction and suppressed peroxidation dependent lysis of resealed membranes. Inhibition of lipid peroxidation was essentially complete in the presence of 0.1 mM Zn(II), a concentration equivalent to that of added Fe(III). By contrast, Zn(II) had no effect on rose bengal photosensitized lipid peroxidation, a predominantly nonradical, singlet oxygen driven process. Zinc(II) also interfered with xanthine/xanthine oxidase/iron induced peroxidation of Triton X-100-dispersed membranes, but had no effect if EDTA was present. Trivial reasons for inhibition, for example, inactivation of xanthine oxidase or complex formation with O2-, were ruled out by showing that the rate of reduction of cytochrome c by xanthine/xanthine oxidase is not affected by Zn(II). We speculate that Zn(II) acts by interfering with the redox cycling of iron, possibly by competing with the latter for membrane binding sites. PMID- 3841805 TI - Characterization of a cDNA clone encoding murine mitogen-regulated protein: regulation of mRNA levels in mortal and immortal cell lines. AB - Mitogen-regulated protein (MRP) is secreted by certain immortal murine cell lines (Swiss 3T3, BNL) stimulated with serum or particular growth factors. We have identified a cDNA clone that encodes part of the protein and have confirmed that MRP is closely related to, if not identical to, the prolactin-related protein designated proliferin. MRP is not produced by primary mouse embryo fibroblasts to nearly the same extent as it is produced by many immortal or transformed lines. Control of expression of this protein by growth factors is achieved both by regulating the extent of transcription and by regulating the processing of the protein. PMID- 3841806 TI - Changes in nociception after lesions of descending serotonergic pathways induced with 5,6-dihydroxytryptamine. Different effects in the formalin and tail-flick tests. AB - Intrathecal administration of 5,6-dihydroxytryptamine (5,6-DHT) in mice selectively lesioned descending serotonergic pathways. Nociception was evaluated 3 days after injection of 5,6-DHT using the tail-flick and formalin tests. In the tail-flick test shortened latencies were found in the lesioned animals. In contrast, the initial behavioural response (0-15 min) to formalin was reduced, while the late response (15-40 min) was not altered. Fourteen days after intrathecal administration of 5,6-DHT the changes in nociception, both in the tail-flick and in the formalin test, had returned to the control level. These findings support the contention that the raphe-spinal serotonergic system participates in the tonic regulation of nociception in the spinal cord. Apparently this system tonically inhibits spinal nociceptive reflexes, but tonically enhances the initial behavioural responses to noxious chemical stimulation, as measured with the formalin test. PMID- 3841807 TI - Intestinal helminthic infections and some haematological parameters in pregnant women attended at the University Teaching Hospital in Calabar, Nigeria. PMID- 3841808 TI - [Some practical knowledge of the biology of the spider Latrodectus mactans and the latrodectism syndrome in Chile]. PMID- 3841809 TI - [Therapeutic study of pediculosis capitis using lotion and shampoo based on decamethrin]. PMID- 3841810 TI - [Some epidemiological characteristics of hydatidosis and cysticercosis in cadavers autopsied in the Metropolitan region, Chile, 1980-1984]. PMID- 3841811 TI - [Specific knowledge on hydatidosis in a rural sector population of the province of Valdivia, Chile]. PMID- 3841812 TI - [Infestation of housing by ticks of Argas neghmei species in Calama, Chile]. PMID- 3841813 TI - [Interrelations between intestinal protozoa and yeasts of mice]. PMID- 3841814 TI - [Epidemiological study of intestinal protozoiasis and helminthiasis in 490 chronic patients of the Psychiatric Hospital of Putaendo. V Region, Chile, 1985]. PMID- 3841815 TI - [Enteroparasitosis in school children of Chonchi and its relation with some factors of basic sanitation. Insular Chiloe, X Region, Chile]. PMID- 3841816 TI - In-vivo degradation of poly(lactic acid) of different molecular weights. AB - Lactic acid was polymerized using tetraphenyl tin as a catalyst. The molecular weight of the resultant poly(lactic acid) varied between 0.89 X 10(6) and 2.94 X 10(6) depending upon the concentration of the catalyst used. In-vivo degradation of the poly(lactic acid) samples having 4 different molecular weights were studies by implanting these in Wistar rats. It was found that at the end of a 48 week implantation period lower molecular weight poly(lactic acid) samples were degraded at a faster rate than the higher molecular weight samples. PMID- 3841817 TI - 3-D femoral stress analysis using CT scans and p-version FEM. AB - The potential of the finite element method as a computational aid for making objective clinical decisions has not yet been exploited due to the unreliability of the results obtained. The main reasons for this may be attributed to the poor quality of the finite elements available in the conventional softwares, improper modeling of the three dimensional problem, and errors introduced by incorrect representation of geometry and material properties. Herein, we report an attempt to derive a three-dimensional finite element model for the adult human femur which permits reliable representation of the local stress patterns. The geometry was obtained by serial computed tomography scans. The mechanical properties were based on laboratory tests and information available in the literature. The analysis is performed with a new generation software. Preliminary results suggest that the scheme could be automated and used for in vivo analysis. PMID- 3841818 TI - The action of the Yersinia pestis phage on the plague envelope antigen and the human erythrocytes. AB - The activity of the Yersinia pestis phage on the plague envelope antigen has been described. The purified envelope antigen was shown to possess the receptor properties. The phage caused changes of viscosity and hemagglutination properties of the antigen. The phage-treated antigen showed the additional precipitation arc in the immunoelectrophoretic investigations. The adsorption of the Yersinia pestis phage on the sheep and human erythrocytes was examined. The human red cells of group B exhibited the highest receptor properties for the Yersinia pestis phage. PMID- 3841819 TI - Changes in electrocardiograms at rest among dockers employed at loading/discharging of dusty materials. AB - Examinations were carried out among 602 dockers of sea-ports working at stevedore and trimmer work places in loading/discharging of dusty materials. The mean age of the population examined was 40.38 SD+/- 8.83 years and the mean length of service 13.33 SD +/- 6.91 years. In the material examined the authors found 32.7 per cent of cases with chronic non-specific respiratory system diseases. The evaluation of electrocardiograms was performed with the use of Minnesota code. We have found abnormal electrocardiograms in 49.16 per cent of the persons examined, but in 119 persons were observed patterns of the influence of parasympathetic system, which one should recognize as features of good training and fitness to perform hard physical work. If this just mentioned group is left out the total of the abnormal electrocardiograms reaches 28.90 per cent. In ECG recordings we have found pathologic changes in Q and QS waves evidencing the existence of necrotic foci and healed infarct. In cases of chronic non-specific respiratory system diseases (37.7 per cent) occurring particularly over age of 50 years P-pulmonale waves, complete and incomplete right bundle branch blocks, jagged QRS complex and rotation change, as traits of right ventricular hypertrophy were found. PMID- 3841820 TI - The noise and functional disturbances of the cardio-vascular system in seamen. AB - The work presents quantitative relations between service-dependent noise dose levels and "unspecific" for the noise influence remote effects basing on the study of the cardiovascular system of 207 members of the deck and engine room crews. The seamen observed had no hearing losses due to noise (according to the ISO standard 1999). The study carried out in the pause between sea-going voyages showed that when the length of the service exceeded 10 years the noise dose increment of 1 dB corresponds to the hypertension frequency increment of 2%. The increase of the dose and the length of the service turns out as a trend towards the diminished mean arterial pulse pressure (AP) and elevated diastolic and mean dynamic AP. By resorting to the correlation-regression analysis the information value of the mean dynamic AP for the noise influence evaluation was shown as well the possibility to determine the safe noise action dose which may not be over 100 dB at the service length under 40 years. PMID- 3841821 TI - Emotional disorders of sailors in stress situations during long yachting voyages. AB - 28 sailors, members of the six crews who took part in long voyages round the world, including the Cape Horn passage, were put by the author under examination. In the group examined there were found following psychopathological disorders: depressive syndromes, asthenic states, neurosis syndromes and perception disturbances and in one case--a psychotic state. The disorders mentioned above were short-lived and did not cause serious disturbances. The etiology of the psychopathological disturbances occurring in the sailors during long voyages is complex and is a resultant of many factors: social isolation, deprivation of needs, change of the way of life, navigational and meteorological conditions and motivational and personality factors. PMID- 3841822 TI - Psychosomatic aspects of changes in body weight during a long sea voyage. AB - The author, on the basis of his investigations, have shown the relationship between body weight changes and mental disease morbidity and other mechanism of adaptation to conditions of a long sea voyage. In author's opinion changes in body weight are an important adaptational mechanisms in conditions of long sea voyage. This mechanism is based on feedbacks in which dominated psychic mechanisms in the form of changes in personality dimensions. If the free regulation of the body homeostasis is disturbed and cannot be corrected by the body weight changes and personality dimensions then a further escalation of disturbances in homeostasis will lead to psychic or psychosomatic diseases. PMID- 3841823 TI - Comparative investigations into the state of health of seamen employed in the Polish Merchant Marine. AB - In the years 1971-1974 the authors carried out investigations into the state of health of 3000 seamen employed on ships of the Polish Merchant Marine. Ten years later the authors renewed the investigations using the same methods. The only difference was in the number of seamen under investigations, then out of 3000 only 1441 were still in service on ships. The paper shows changes in distribution dynamics of the morbidity rate. It was also demonstrated that specific seamen's work environmental conditions have a significant effect on occurrence and development of different types of neuroses, hypertensive diseases and calculi of kidney and ureter. PMID- 3841824 TI - The work of ship's doctors of Polish Ocean Lines. AB - In 1984, during 201 voyages of cargo ships of Polish Ocean Lines having doctors on board, 30340 medical consultations were given to crew members, in 15506 cases of complaints and diseases. Doctors also consulted injured seafarers 2456 times in cases of injuries, wounds, contusions, broken bones, burns, scalds etc. During these 201 voyages, 33 cases of serious medical conditions were reported among crew members, which required disembarkation and hospital treatment abroad; in this number two cases of myocardial infarction ended fatally. There were also 13 casualties among seamen, which were treated in hospitals in foreign ports; all of them survived. One of the important health problems of seafarers were diseases of teeth, pulp, and periapical tissue. Such cases constituted the majority (66.9%) of all 1868 cases referred for consultation and treatment in foreign ports. Oral diseases prevention among seafarers needed improvement. The working time of doctors on board ship was under-utilized. To a greater extent they should be involved in training seafarers in first aid and primary health care, and in health education activities among seamen, during sea voyages. Materials presented in the paper may be of use in planning efficient and cost-effective health services for crews of ships. PMID- 3841825 TI - Medical training for ship's officers in the GDR. AB - The author presented the tasks and programme of training of GDR merchant marine officers performing medical service aboard. This programme is realized at Maritime Academy in Warnemunde/Wustrow. The paper discuss both the range of lectures and seminar/exercises, list of equipment necessary for training, and contents and form of certificates. PMID- 3841826 TI - Examinations of digestive system parasitoses in people back from the tropics and subtropics. AB - The paper presents results of epidemiological-clinical studies of digestive system parasitoses in persons (seamen and other professional groups) back from the tropics. The author carried out multidirectional examinations (general medical with rectoscopy, laboratiorial: parasitological, microbiological, mycological and epidemiological) of 3,315 persons. The results were evaluated statistically. He defined the frequency of particular parasite invasion in men in dependence on region of stay, profession, length of service and age, and frequency of occurrence of symptomatic parasitoses as well as clinical picture of particular parasite species invasion. Special attention was paid to amoebiasis which the author separated from the whole material under analysis. The author made a comparison between cases of imported (181) and indigenous (164) amoebiasis as well as amoebiasis found in foreigners coming from tropical countries and staying in Poland (38). On the basis of many years observations of persons cured of amoebiasis he analysed the probability of occurrence of postamoebic syndrome. The material under examinations allowed to recognize the picture of digestive system parasitoses imported to Poland from the tropics. PMID- 3841827 TI - Treatment with praziquantel the Taenia saginata infection in men. AB - Praziquantel given in single doses of 12, 15 and 20 mg/kg body weight was applied in treatment of Taenia saginata infection (61 persons) and in four doses against Hymenolepis nana infection (1 person). Only one person not being cured shows that the compound has given a very high cure rate in clinical trial. 10% of patients treated complained of subjective mild side effects, which disappeared during 24 h after drug administration. PMID- 3841828 TI - [Vascular history of hepatic metastases (K2), categorization and therapeutic choice]. PMID- 3841829 TI - [Cerebral arteriovenous malformations]. PMID- 3841830 TI - [Endovascular treatment of intracerebral arteriovenous angiomas]. PMID- 3841831 TI - Role of thymidylate synthetase in the cytostatic activity of pyrimidine nucleoside analogues. PMID- 3841832 TI - [The campaign against malaria 150 years after Laveran]. PMID- 3841833 TI - [Report on the activities of the Academy in 1985]. PMID- 3841834 TI - Morpho-functional anatomy of the human coronary arteries with reference to myocardial ischemia. AB - The vascular beds of 42 human hearts were examined to determine the underlying morpho-functional arrangement of the coronary arteries. The hearts were obtained at autopsy from cases where the immediate cause of death was not related to cardiovascular disease. It was found that while the course and size of individual vessels vary considerably from heart to heart, there is an underlying pattern in the functional arrangement of the vessels. On the basis of this pattern, a new functional classification of coronary arteries is proposed, together with a related concept of intrinsic "zones" of the myocardium. It is concluded that a deficiency in coronary blood supply in ischemic heart disease would be more accurately described in terms of the affected zones of the myocardium rather than the affected vessels. It is the effect of stenosis, not the stenosis per se, which must be assessed and documented ultimately. A chart is proposed to facilitate that documentation. PMID- 3841835 TI - [Value of echocardiography in the diagnosis of arrhythmias]. AB - Identification of auricular activity is important for the diagnosis of arrhythmias. P waves however are often difficult to recognize. Using M-mode and 2 D echocardiographic techniques, it is often possible to recognize atrial contraction at the level of the atrial septum or of the free wall of the right atrium. Diagnosis can be made in cases of sinus tachycardia, supra ventricular tachycardia with and without aberrancy and ventricular tachycardia with dissociation. Ventricular tachycardia with one to one retrograde conduction or with atrial fibrillation cannot be recognized by this method. PMID- 3841836 TI - A new surgical technique to correct double chambered right ventricle associated with anomalous left anterior descending coronary artery. AB - A 42 year old woman with symptomatic double chambered right ventricle had the additional features of an anomalous left anterior descending coronary artery and attachment of the tricuspid valve to the area of subinfundibular stenosis which precluded conventional repair. A non-valved Dacron conduit was used to bypass the obstruction. The patient is asymptomatic two years later. PMID- 3841837 TI - Interaction of adrenergic and opioid systems in the short-term regulation of cardiovascular activities. AB - Endogenous opioid peptides such as methionine enkephalin (met-enkephalin) are known to have a profound cardiovascular action in addition to actions mimicking morphine in many animal models. In the anesthetized rabbit, met-enkephalin, as little as 1 microgram/kg, decreased blood pressure and heart rate upon its intravenous injection. Little is known about the locus of action or the mechanism and the physiological implication of the peptide action. The primary objective of this study was to test influences of adrenergic and cholinergic agents on the cardiovascular effects of the peptide. Pentobarbital (30 mg/kg) anesthetized rabbits were tracheotomized and a femoral artery and vein were cannulated for the measurement of arterial blood pressure and drug injection. Through a left lateral abdominal incision, the left renal nerve was isolated and renal nerve activity (RNA) recorded. Met-enkephalin (1 to 300 micrograms/kg, i.v.) decreased RNA initially and reduced blood pressure and heart rate. The cardiodepressant action of the peptide was antagonized by naloxone (1 mg/kg), but not by naloxone methobromide (1.3 mg/kg). Both phentolamine (4 mg/kg) and prazosin (1 mg/kg) antagonized the cardiovascular effect of met-enkephalin. Both hexamethonium (5 mg/kg) and mecamylamine (2 mg/kg) completely masked most of the depressant cardiovascular effects of metenkephalin by an increase in the duration of RNA suppression. The inability of naloxone methobromide and ganglionic blockers to antagonize the hypotensive action of met-enkephalin suggests that the peptide effect is secondary to its action on the central adrenergic system. PMID- 3841838 TI - [Contusive retinopathies of the posterior pole]. PMID- 3841839 TI - [Vitrectomy after ocular injuries. Apropos of 26 cases]. PMID- 3841840 TI - [Traumatic detachment of the pars plana]. PMID- 3841841 TI - [Ocular complication caused by fulguration. Discussion apropos of 2 simultaneous cases]. PMID- 3841842 TI - [Value of the detection of visual disorders in nursery schools]. PMID- 3841844 TI - [Nyctohemeral changes in serum zinc in alcohol-smoking optic neuropathies]. PMID- 3841843 TI - [Limbic tumors--clinical and therapeutic reflections from 12 cases]. PMID- 3841845 TI - [Evaluation of a year of use of the picosecond neodymium-YAG laser]. PMID- 3841846 TI - [Clinical and paraclinical study of a rigid gas-permeable lens]. PMID- 3841847 TI - [Malignant melanoma of the choroid treated by Stallard's disks (text of a film)]. PMID- 3841848 TI - [Problems posed to the anesthesiologist by ophthalmologic surgery]. PMID- 3841849 TI - [Inflammatory pseudoglioma caused by Toxocara canis (anatomo-clinical study of a case)]. PMID- 3841850 TI - [Keratocorrection or corrective surgery for astigmatism]. PMID- 3841851 TI - [Stiles technics in Bjerrum's scotoma in open-angle glaucoma]. PMID- 3841852 TI - [Critical study of the XYZ color triangle]. PMID- 3841853 TI - Training clinical psychology students in aging. PMID- 3841854 TI - Social work training for mental health services to the elderly within a multigenerational context. PMID- 3841855 TI - Issues in the development of training for mental health service to the elderly. PMID- 3841856 TI - Increasing the emphasis on health care and the environment in geriatric mental health training. PMID- 3841857 TI - Training in geriatric mental health: two innovative outpatient training sites. PMID- 3841858 TI - The Teaching Nursing Home Project. PMID- 3841859 TI - Research in nursing: implications for nursing gerontology. PMID- 3841860 TI - Pattern of ocular injuries in Haryana. PMID- 3841861 TI - Ocular immunity in uveitis: a study of cellular response. PMID- 3841862 TI - Scheie's operation--a retrospective study. PMID- 3841863 TI - Serum immunoglobulin levels in endogenous uveitis: before and after therapy. PMID- 3841864 TI - Optic pit and central serous detachment. PMID- 3841865 TI - Precorneal tear film changes due to soft contact lens wear. PMID- 3841866 TI - Medulloepithelioma of the ciliary body. PMID- 3841867 TI - Goldenhar's syndrome with unilateral Duane retraction syndrome and "butterfly" vertebra. PMID- 3841868 TI - Metastatic orbital carcinoma of thyroid. PMID- 3841869 TI - Bilateral primary herpes simplex keratitis in a neonate (a case report). PMID- 3841870 TI - Bilateral coloboma of lens in Marfan's syndrome. PMID- 3841871 TI - Prevention versus medical relief. PMID- 3841872 TI - Public health and virus diseases. PMID- 3841873 TI - An analysis of characteristics of urban air pollution over a four year period (1978-1981). PMID- 3841874 TI - Pyoderma--an epidemiological study through school survey in Surat District (South Gujarat). PMID- 3841875 TI - Polynomial regression analysis of arterial blood pressure in different population groups at higher altitude (Simla Hills). PMID- 3841876 TI - Regional prevalence of xerophthalmia (Haryana). PMID- 3841877 TI - Changes in respiratory functions and serum lipids during prolonged treadmill walking. PMID- 3841878 TI - The influence of the functional characteristics of muscle on cardiovascular response during static work. PMID- 3841879 TI - Kinetics of cardiorespiratory function at the onset of exercise. PMID- 3841880 TI - A comparison between psychophysical and physiological approaches across low and high frequency ranges. PMID- 3841881 TI - Physical activities of women in farming and non-farming seasons. PMID- 3841882 TI - Prior physical work intensity increases the amplitude but not the frequency of combined tremor of the hand and finger. PMID- 3841883 TI - Social skills of children with cerebral palsy. PMID- 3841884 TI - Mortality of working and non-working populations in Japan: effects of social life factors. PMID- 3841885 TI - Influence of alcohol ingestion on tasks related to archery. PMID- 3841886 TI - [Differences in left ventricular systolic performance during exercise in patients with hypertrophic cardiomyopathy and systemic hypertension]. AB - To evaluate differences in systolic global and regional performances of the left ventricle during exercise, multi-stage submaximal exercise echocardiography was used for 21 patients with hypertrophic cardiomyopathy (HCM) and 14 patients with systemic hypertension (HT), whose interventricular septa (IVS) were nearly the same in thickness (HCM; 16.5 +/- 2.4 mm, HT; 15.4 +/- 1.7 mm, NS). The data were compared with those of 18 normal subjects (N). During exercise, end-diastolic dimension (EDD) was increased in all three groups; however, there was no statistical differences among the three groups either at rest or during exercise. End-systolic dimension (ESD) was significantly decreased during exercise in HT (29.3 +/- 5.8 at rest to 28.1 +/- 5.8 mm at the peak exercise, p less than 0.05) and N (from 30.3 +/- 3.3 to 25.7 +/- 3.0 mm, p less than 0.001). On the other hand, ESD of HCM at rest, which was less than those of the other two groups, did not decrease with exercise (from 25.1 +/- 4.5 to 25.6 +/- 4.6 mm, NS), and rather they increased (more than 2 mm) during exercise in seven patients. The % shortening fraction (%SF) increased from rest to exercise both in HT (35.6 +/- 7.9% to 40.1 +/- 9.6%, p less than 0.001) and in N (from 35.1 +/- 4.2 to 45.9 +/- 4.7%, p less than 0.001). However, in the HCM group, the %SF, which was significantly greater at rest than in the other two groups, did not increase during exercise (42.5 +/- 6.8 to 42.5 +/- 8.8%, NS). In addition, in seven of 21 patients with HCM, the %SF increased more than 5% at the peak exercise. At rest, systolic wall thickening (%WT) of the IVS equally reduced both in HCM and HT. It increased in HT from 20.8 +/- 9.3% at rest to 24.6 +/- 12.7% at the peak exercise (p less than 0.05), but did not change in HCM (from 16.6 +/- 9.6% to 16.3 +/- 7.0%, NS). At rest, %WT of the left ventricular posterior wall (LVPW) was significantly greater in HCM than in HT. During exercise, it increased in HT (from 43.1 +/- 15.9% to 61.9 +/- 20.5%, p less than 0.01), but did not increase in HCM (from 81.0 +/- 27.7% to 85.5 +/- 29.6%, NS).(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3841887 TI - Idiopathic dilated right ventricular cardiomyopathy: a report of eight cases. AB - From 1970 to 1983, eight patients who had severe right ventricular dilatation with little or no left ventricular abnormality were referred to our hospital. There were two men and six women, whose ages ranged from 16 to 38 years and averaged 27. Five patients were members of two families, which had definite hereditary histories of this disease. ECGs of seven patients suggested right ventricular abnormalities. Ventricular arrhythmias were documented in seven, whose ECGs suggested that the origins of the arrhythmias were in the right or both ventricles. Cardiothoracic ratios ranged from 0.50 to 0.66 and averaged 0.59. Five patients had wide respiratory splitting of the second heart sound. Echocardiography showed a marked increase in the right ventricular dimension. Right ventricular diastolic pressure was increased in three; left ventricular diastolic pressure was increased in two. Right ventricular angiography revealed marked dilatation and low ejection fractions of the right ventricle in all, but left ventricular function was nearly normal in them, except two patients who had minimal abnormality. The average follow-up period was 6.3 years and ranged from 3 months to 11 years. During the follow-up period, only two patients had ventricular tachycardia and three developed overt heart failure. Three patients died, two suddenly, and one from an attack of ventricular tachycardia. Autopsies of these two showed extreme dilatation of the right ventricle and one of them showed concentric hypertrophy of the left ventricle. Histological abnormalities were found in both ventricles. In summary, it is suggested that idiopathic dilated right ventricular cardiomyopathy can be classified in the spectrum of dilated cardiomyopathy. PMID- 3841888 TI - [Right ventricular dysplasia and dilated cardiomyopathy observed by radionuclide images]. AB - Four cases of right ventricular dysplasia (RVD) and 28 cases of dilated cardiomyopathy (DCM) were studied. RVD was characterized clinically by syncope, sustained recurrent ventricular tachycardia with left bundle branch block patterns on the surface electrocardiogram, and right heart failure. Furthermore, moderate to severe dilatation of the right ventricle and depressed right ventricular function were apparent on radionuclide angiography. However, left ventricular dilatation and depressed left ventricular function were documented in DCM. Right ventricular volume was proportional to left ventricular volume in DCM, however, right ventricular volume was disproportionately greater in RVD. On the T1-201 perfusion image, left ventricular perfusion defects were delineated in 10 of 26 patients with DCM, and in one of four RVD patients. During two to eight year follow-up periods, six patients died suddenly five of whom had left ventricular perfusion defects. However, in 19 patients without left ventricular perfusion defects, only one sudden death was observed. A connecting link between sudden death and left ventricular perfusion defect is suggested. PMID- 3841889 TI - [Two-dimensional echocardiographic recognition of dilated cardiomyopathy: comparison with postmortem studies]. AB - To elucidate the pathophysiology of dilated cardiomyopathy (DCM), the relationship of two-dimensional echocardiographic wall motion abnormalities (asynergy) to histopathological findings was evaluated in autopsied patients including seven with DCM, five with old myocardial infarction (OMI) and three with the normal heart. The DCM cases were classified morphologically in two groups, namely four of type I and II and three of type III, according to Shozawa's classification. Three short-axis views of the left ventricle were divided into 19 segments; the wall motion was assessed visually and classified as normal motion, hypokinesis, akinesis and dyskinesis. The postmortem specimens were immersed in 10% formalin; transverse sections and wall divisions were prepared corresponding to the two-dimensional echocardiographic views, and the area of each segment was determined by a computer planimetry excluding the papillary muscles and trabeculae. Fibrosis (%) was measured histologically by the point counting method with light microscopy. The results were as follows: In DCM, fibrosis (%) increased with increasing severity of asynergy: 17.1% fibrosis in normal motion; 28.7% in hypokinesis; 40.7% in akinesis and dyskinesis. In OMI, fibrosis (%) also increased with increasing severity of asynergy. On comparison of DCM with OMI, no difference was established relating to fibrosis (%) in the asynergic segments; moreover, in both groups, asynergy was detected more frequently in the segments in which fibrosis (%) exceeded 21%. On comparison of type I+II DCM with type III DCM, fibrosis (%) of type III was significantly less than that of type I+II in the same degree of asynergic segments. Moreover, fibrosis (%) of type I+II tended to be greater in the outer layer than in the inner layer, while fibrosis (%) of type III was evenly distributed throughout the myocardium, or greater in the inner layer than in the outer layer. In type I+II, wall thinning was marked with increasing severity of asynergy; in contrast, these correlations were not observed in type III. In type I+II, a higher fibrotic rate was observed in the left ventricular free wall and an abnormal Q wave appeared frequently on ECG. This tendency was not found in type III. These findings indicate that fibrosis is one of the most important factors in decreasing cardiac muscular contractility in DCM, and suggest that there is a different pathogenesis between type I+II and type III fibrosis. PMID- 3841890 TI - [Apical mid-diastolic rumble in hypertrophic cardiomyopathy: a pulsed Doppler echocardiographic study]. AB - To investigate the mechanism of an apical mid-diastolic rumble in hypertrophic cardiomyopathy (HCM), we recorded left ventricular (LV) inflow velocity patterns using pulsed Doppler echocardiography and apexcardiography for 10 HCM patients with rumble and 20 HCM patients without rumble. Controls consist of 17 normal subjects, three patients with complete atrioventricular block and two patients with artificial right ventricular pacemakers. The LV inflow velocity profiles were analyzed in terms of acceleration time (AT) and deceleration time (DT) of the rapid filling wave, and the ratio of peak velocity of the atrial contraction wave to that of the rapid filling wave (A/D ratio). The results were as follows: The apical mid-diastolic murmur in HCM had a crescendo-decrescendo character mainly of medium frequency, and increased in intensity after the inhalation of amyl nitrite. All patients with rumble had asymmetric septal hypertrophy and the five of these had LV outflow obstruction. In six of the 10 patients with rumble, mild mitral regurgitation was detected. In HCM with rumble, the AT tended to be shorter than that of HCM without rumble, but it was significantly longer than the AT of normal subjects. In HCM with rumble, the DT was significantly shorter than that of HCM without rumble, but it was significantly longer than the DT of normal subjects. There was no significant difference in the A/D ratio between the HCM with rumble and the normal subjects, but the A/H ratio of the apexcardiogram was significantly increased in HCM with rumble as compared with those of HCM without rumble and of the normal subjects. The LV dimension was significantly decreased in HCM with rumble as compared with those of HCM without rumble and the normal subjects. Peak negative VCF was significantly decreased in HCM with rumble as compared with that of HCM without rumble. But there was no significant difference in this parameter between HCM with rumble and the normal subjects. In simultaneous recordings of apical mid-diastolic rumble and LV inflow velocity patterns, the rumble appeared to start after the beginning of the diastolic rapid filling wave and to stop before or at the end of the diastolic rapid filling wave. In patients with complete atrioventricular block and with artificial right ventricular pacemakers, the apical mid-diastolic rumble appeared when the P wave was during the rapid filling phase of the left ventricle.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3841891 TI - [Abnormal left ventricular endocardial structures detected by two-dimensional echocardiography in systemic lupus erythematosus]. AB - This is a report of abnormal endocardial structures on the left ventricular wall as visualized by two-dimensional echocardiography (2-D echo) in patients with systemic lupus erythematosus. Abnormal endocardial structures, arising from the left ventricular endocardium and appearing to proliferate into the cavity, were found in 11 (20%) of 54 patients. The most frequently involved site was posterobasal left ventricular wall in the parasternal long-axis view, and the posterolateral segment of the left ventricle including the anterior and posterior papillary muscles in the parasternal short-axis view. M-mode echocardiograms, simultaneously recorded with 2-D echo, revealed abnormal structures of increased intensity adjacent to the endocardium with thicknesses of 4 approximately 7 mm. Most of the abnormal endocardial structures were observed in patients in the active phase by 2-D echo, and they appeared to regress with steroid therapy. In one autopsy case, fibrous endocardial thickening suggesting healed endocarditis was present in the anterior papillary muscle as observed by 2-D echo. Their location and response to steroid therapy suggests that these abnormal echoes could represent Libman-Sacks endocarditis. PMID- 3841892 TI - [Continuous wave Doppler measurement of transmitral pressure gradients in mitral stenosis: comparisons with simultaneous catheterization measurements]. AB - To determine the accuracy and reliability of measurements of mitral flow velocity and pressure gradients obtained from continuous wave Doppler (CWD) echocardiography, the left ventricular pressure, pulmonary capillary wedge pressure and CWD echo were simultaneously recorded simultaneously for 22 patients with mitral stenosis. An ultrasonic transducer was placed over the left ventricular apex to direct the ultrasonic beam parallel with the mitral flow. High-pitched audio signals were used to determine whether the ultrasonic beam direction was appropriate. The angle formed by the beam direction and the blood flow was assumed to be zero when a good Doppler echo was recorded. The maximum flow velocity and pressure gradients calculated from CWD echo were compared with pressure gradients obtained by catheterization. These were analyzed during the same heart beats. The results were as follows: Good recordings of pressures and CWD echograms were obtained for 17 patients, and their data were used for the analysis. The maximum flow velocity through the mitral valve obtained by CWD echography was very similar to the pressure gradients obtained by catheterization in terms of phases and patterns. The pressure gradients (x) calculated from CWD using a simplified Bernoulli's equation correlated well with those (y) measured at the same time on pressure tracings (y = 1.2x + 1.5, r = 0.92, p less than 0.001). Mean diastolic pressure gradients (X) obtained by CWD echography also correlated well with those (Y) recorded at catheterization (Y = 1.2X + 0.15, r = 0.95). Based on these results, we conclude that CWD echography is a reliable, noninvasive method to measure the pressure gradient across the mitral valve in patients with mitral stenosis. PMID- 3841893 TI - [Mitral valvular disease secondary to mitral ring calcification: a clinicopathologic study]. AB - Fifteen cases with mitral valvular disease caused by mitral ring calcification (MRC) were observed among 2,800 consecutive autopsy patients more than 60 years of age. They consisted of one man and 14 women whose average age was 86.4 years. All had been diagnosed as having mitral valvular disease during life. For this clinicopathologic study, the cases were categorized as nine cases with mitral regurgitation (MR Group) and six with mitral stenosis (MS Group). Among the 15 cases, phonocardiograms were obtained in 14 and echocardiograms in 6. In addition, 122 cases with MRC, the length of which was 5 mm or more, were selected from 900 recent consecutive autopsies of senile patients, to evaluate the site of calcification and to analyze the ratio of calcification length to mitral valve ring circumference. The following conclusions were obtained: The prevalence of mitral valvular disease due to MRC in the aged was 15/2,800 (0.5%). MR was observed in nine cases and MS in six. Phonocardiograms of the MR Group revealed a holosystolic murmur in seven cases, a late systolic murmur in one, a third heart sound in four and a fourth heart sound in five. In the MS Group, a holosystolic murmur was found in four, a presystolic murmur in four, a diastolic rumble in one, but no opening snap in any case. A diamond-shaped systolic murmur was found in nine cases with MS or MR, suggesting an ejection systolic murmur caused by an associated calcified aortic valve. Echocardiograms showed markedly decreased DDR in five cases and increased echo intensity of the aortic valve in four. Pathologic findings revealed that the mean length of MRC was 36.6 mm in the MR Group and 58.0 mm in the MS Group. The calcification ring ratio (CRR = MRC/MVR X 100) was 50.3% in the MR Group and 69.8% in the MS Group. In the MR Group, MRC involved the anterolateral commissure in three, posteromedial commissure in five, and both in one. In five of six cases with MS, both commissures were involved by MRC. The study of 122 cases with MRC length greater than or equal to 5 mm suggested that MRC occurred first in the middle scallop of the posterior mitral leaflet, and extended to the posterior scallop, subsequently extending up to the anterior scallop, and finally involved the anterior mitral leaflet beyond the commissures.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3841895 TI - [Quantitative analysis of aortic regurgitation using radionuclide phase analysis]. AB - In this study, the clinical utility of phase analysis using gated blood pool scintigraphy to detect aortic regurgitation (AR) was assessed. The study population included 33 patients with AR documented by cineaortography, and 53 patients without AR diagnosed by clinical features and pulsed Doppler echocardiography or cineaortography. Gated blood pool images were stored in modified left anterior oblique views by the multiple gated method (28 frames per beat) after the in vivo labeling of erythrocytes using 25 mCi 99m-Tc. Amplitude was depressed at the subaortic region toward the apex in patients with AR, and occasionally the phase angle occurred earlier in the same region. This is because diastolic filling began earlier and stroke count was decreased more in the subaortic region than in other regions of the left ventricle in examining the regional time-activity curve. Based on this characteristic finding in the amplitude image, the specificity was 81% and the sensitivity was 79% in the diagnosis of AR. The degree of AR was estimated using the amplitude image as follows: grade 1, depression of amplitude localized to the subaortic region; grade 2, depression of amplitude detected from the subaortic region to the midportion of the left ventricle; grade 3, depression of amplitude detected beyond the midportion of the left ventricle. We compared results with those of the radionuclide (RI's classification) and angiographic methods (Sellers' classification) as to the severity of AR. AR could not be detected using the radionuclide method in all four patients with Sellers' grade 1, and in three of nine patients with Sellers' grade 2.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841894 TI - [Continuous wave Doppler assessment of prosthetic valves in the mitral position: comparison of the St. Jude medical mechanical valve and the porcine xenograft valve]. AB - To assess the opening function of prosthetic valves in the mitral position with special reference to the type and size of the valve and the years since replacement, we recorded maximum flow velocity through the mitral orifice using continuous wave Doppler echocardiography for 50 patients with mitral valve replacement and 15 normal subjects. There were 33 patients with St. Jude Medical valves and 17 with porcine xenograft valves. An ultrasonic transducer was placed over the left ventricular apex and the direction of the ultrasonic beam was positioned to be parallel with mitral flow using the Doppler audio signals. A pressure gradient was calculated from continuous wave Doppler flow velocity with a simplified Bernoulli's equation proposed by Hatle et al. The peak and mean maximum flow velocity, mean pressure gradient across the valve and the pressure half time were measured to evaluate the opening function of the prosthetic valve. The results were as follows: All four measurements were significantly larger in patients with valve replacements than in normal subjects, and were significantly increased in patients with porcine xenograft valves compared to those with St. Jude Medical valves. The opening function was well maintained in patients having larger valves than in those having smaller ones in the group of St. Jude Medical valve replacement. In patients who had porcine xenograft valve for four years or more, the opening function was decreased the more years they had been implanted. We conclude that continuous wave Doppler echocardiography is a useful noninvasive method for the quantitative assessment of the diastolic opening function of the prosthetic mitral valve.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841896 TI - [Functional transvalvular regurgitation in patients with Bjork-Shiley aortic valves: a pulsed Doppler echocardiographic study]. AB - It is well known that a small amount of regurgitation occurs through Bjork-Shiley valves. Obviously, this functional regurgitation is related to the construction of the Bjork-Shiley valve, wherein the disc does not overlap the ring, but fits within its orifice, leaving a minimal space between the edge of the disc and the ring. The aim of this study was to evaluate the clinical significance of regurgitation in patients having Bjork-Shiley valves in the aortic position by pulsed Doppler echocardiography. The study group consisted of 46 patients with normally functioning valves and five patients with malfunctioning valves. Valve dysfunction resulted from paravalvular regurgitation in three, and thrombosed valves in two (confirmed by surgery and angiography). Using pulsed Doppler echocardiography, aortic regurgitation was observed in 29 of the 46 normally functioning Bjork-Shiley aortic valves. Among these, regurgitant flow signals were constantly located in the vicinity of the valve ring in the left ventricular outflow tract. Therefore, these regurgitant flow signals were considered to represent functional regurgitation of the Bjork-Shiley valve. Aortography was performed for 11 of the 46 normally functioning Bjork-Shiley valves, and there was minimal transvalvular regurgitation in all. In all of the five malfunctioning Bjork-Shiley aortic valves, aortic regurgitant flow signals were detected by pulsed Doppler echocardiography, and the maximal distance of the regurgitant flow signals from the Bjork-Shiley valve ring was more than 0.5 cm. However, it was difficult to differentiate transvalvular regurgitation from paravalvular regurgitation using pulsed Doppler technique alone.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841897 TI - [Pulmonary regurgitation with special reference to the shape of the pulmonary valve ring: a pulsed Doppler and angiographic study]. AB - Using pulsed Doppler echocardiography and cineangiography, the significance of pulmonic valve ring dimensions in the genesis of pulmonic regurgitation (PR) was studied in 40 patients, including 12 with valvular disease, 19 with coronary artery disease and nine with the normal heart. In nine of the 40 subjects, pulmonary hypertension (mean pulmonary artery pressure greater than or equal to 20 mmHg) was observed. The criterion for diagnosing PR was disturbed flow patterns recorded just below the pulmonic valve which spanned more than 40% of diastole, exceeding 1.5 KHz in peak frequency (corresponding to a flow velocity of about 50 cm/sec). Sagittal and transverse diameters of the pulmonic valve ring (PRDs, PRDt) at the upper edge of the pulmonary sinus, and the sagittal diameter of the pulmonary sinus (PSD) at the level of its maximal bulging were measured using pulmonary angiography. PR was detected in 15 subjects (37.5%). The prevalence of PR among three groups regardless of the absence or presence of pulmonary hypertension was not significantly different. The peak frequency of the regurgitant flow signals as well as the farthest point of the signals detected did not differ among the three groups irrespective of pulmonary hypertension. The ratio of the PRDs to the PRDt (PRDs/PRDt) was greater in patients with PR than in those without PR (p less than 0.001), but no correlation was established between PRDs/PRDt and mean pulmonary artery pressure. The PRDt index and PRDs index (normalized by body surface area) correlated well with the mean pulmonary artery pressure (r = 0.70, p less than 0.001 and r = 0.62, p less than 0.001, respectively). PSD also correlated with the mean pulmonary artery pressure (r = 0.49, p less than 0.01), whereas, PSD/PRDs correlated inversely with the mean pulmonary artery pressure (r = 0.40, p less than 0.01), indicating a relatively more prominent dilatation of the PRDs than of the PSD in cases with pulmonary hypertension. These results suggest that the etiology of PR in our series of patients was primarily attributable to the distortion of the pulmonic valve ring. The wide-spread concept that pulmonary hypertension dilates the pulmonic valve ring, leading to the development of PR, should be criticized. PMID- 3841898 TI - [Magnetic resonance imaging of cardiovascular diseases: advantages of coronal and sagittal planes]. AB - The usefulness of coronal and sagittal sections of the cardiovascular system by magnetic resonance imaging was evaluated. Coronal, sagittal and transverse spin echo scans using ECG-non-gating and gating during systole and diastole were performed for five normal volunteers, 91 with heart diseases (25 valvular disease, 28 ischemic heart disease, 14 cardiomyopathies, 14 congenital malformations, four pericardial diseases, and six others) and 32 patients with aortic abnormalities (17 aneurysms, 10 dissections and five others) using a 2.5 KGauss unit. Cardiac gating necessitated six to eight min per scan, but it was mandatory to obtain clear images of the details. On the other hand, in most of the aortic abnormalities, diagnostic images were obtained by the ECG-non-gating technique which required only about 2.5 min per scan. Coronal and sagittal sections were useful for estimating the entire shape and size of each cardiac chamber and intracardiac thrombi, the extent of postinfarctional wall thinning and cardiac aneurysms, and hypertrophy or narrowing of both the ventricular outflow tracts and apex. These planes were particularly useful, and more contributory than transverse planes for detecting inferior myocardial damage such as infarction. A few coronal and sagittal scans were sufficient to diagnose extensive lesions of the aorta, such as atherosclerosis, dissections and the aortitis syndrome. Local lesions such as coarctation, supravalvular aortic stenosis, annulo-aortic ectasia and aneurysm, especially those originating in the inferior wall of the aortic arch were easily discovered. Since the main arteries, such as the innominate, left common carotid, left subclavian and renal arteries, were clearly demonstrated by coronal images, coronal scans were considered more useful than transverse ones for observing the relationship between these arteries and dissections or aneurysms of the arch and of the abdominal aorta. PMID- 3841899 TI - Effectiveness of ECG-gated magnetic resonance imaging in diagnosing cardiovascular diseases. AB - Nuclear magnetic resonance imaging (MRI) is a noninvasive method which can discriminate between flowing blood and vascular walls, and is expected to contribute to the diagnosis of cardiovascular diseases. Since the data acquisition by conventional MRI is too long for precise cardiac imaging, the ECG gated method is mandatory in evaluating cardiac function and producing cardiac images of high quality. To evaluate the effectiveness of ECG-gated MRI, left ventricular wall motion and ejection fraction by MRI were compared with those obtained by radionuclide technique. Two types of MR imagers were used: one with a resistive magnet (0.15 Tesla) for 12 patients, and the other with a superconductive magnet (0.35 Tesla) for eight patients. MRI imaged cardiac muscle and vascular walls without the need for any contrast media or radionuclides. The superconductive apparatus provided better quality images than did the resistive one. Comparing MRI with radionuclide technique regarding left ventricular wall motion, resistive and superconductive MRI data correlated satisfactorily with those of radionuclide technique, except in the inferior wall, which was better evaluated by radionuclide technique. Left ventricular ejection fraction obtained by MRI was moderately lower than those obtained by radionuclide technique, though the correlation was good [r = 0.84 (resistive unit) and r = 0.85 (superconductive unit)]. In addition to three-dimensional morphological information, ECG-gated MRI provides information nearly comparable to that of radionuclide technique in the evaluation of left ventricular function and wall motion. Therefore, we regard gated MRI as effective in evaluating various aspects of cardiovascular diseases. PMID- 3841900 TI - [Quantitative evaluation and color display of echo intensity by two-dimensional echocardiography]. AB - To assess myocardial tissue changes by two-dimensional echocardiography, quantitative evaluation and color display of the echo intensity were attempted using computerized image processing. The materials consisted of 11 patients with old anteroseptal myocardial infarction one year or more after the onset (OMI), and 12 normal subjects. Two-dimensional echocardiograms in the parasternal long axis view were obtained using a commercially-available phased-array sector scanner. Scanner receiver settings including sensitivity-time control were maintained constant in all subjects. Images were recorded on the U-matic tape using a video tape recorder, then stop-frame end-diastolic images were converted to digital images. To measure echo intensity, regions of interest (ROI) were placed in the interventricular septum (IVS), the left ventricular posterior wall (LVPW), the left ventricular cavity, and the pericardium. The mean value of the echo intensities was determined for each ROI. Then, the relative echo intensity of the IVS or LVPW was calculated using the mean value of the pericardium as the maximum echo intensity, and the mean value of the left ventricular cavity as the minimum echo intensity. In normal subjects, the relative echo intensity of the IVS was 0.40 +/- 0.05 (mean +/- SE) and that of the LVPW was 0.31 +/- 0.02. By contrast, in patients with OMI, there was a significant increase (p less than 0.001) in the relative echo intensity of the IVS (0.71 +/- 0.06). The relative echo intensity of the LVPW was less than normal, but the difference was not statistically significant.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3841901 TI - [Continuous wave Doppler echocardiography as a noninvasive evaluation of aortic regurgitation]. AB - Continuous wave Doppler echocardiography permits measurement of high blood flow velocity, which is not obtained by conventional pulsed Doppler echocardiography. In this study, continuous wave Doppler echocardiography was used to measure aortic regurgitant flow velocity, and the utility of this method in evaluating aortic regurgitation (AR) was examined. Continuous wave Doppler recordings of the left ventricular outflow were obtained with the guidance of the long-axis two dimensional echocardiogram from the apex in 20 patients with AR and 10 without AR. In 18 of the 20 patients with AR, Doppler signals of regurgitant flow were successfully detected. The recorded regurgitant flow velocity pattern had characteristic contours: the regurgitant flow was greater than 1.8 m/sec in velocity immediately after aortic valve closure, and gradually decelerated until the next ventricular systole. The Doppler half time index, which was the time profile to decline to 0.5 of the peak velocity, was significantly shortened in accordance with the degree of AR (p less than 0.01). Thus, continuous wave Doppler echocardiography is a simple, useful method for the noninvasive evaluation of AR. PMID- 3841902 TI - Two-dimensional echocardiographic evaluation of right ventricular function during left heart bypass. AB - Right ventricular (RV) function in terms of hemodynamics and RV wall motion was studied in 14 mongrel dogs during left heart bypass (LHB) using a centrifugal blood pump. The wall motion was analyzed by two-dimensional echocardiography (2D echo). Incremental changes in LHB flow ratios of 0% (controls), 25%, 50%, 75% and a maximum 85-100% were accompanied by decrements of segmental shortening of the interventricular septum (IVS) by 54 +/- 12%, 43 +/- 5%, 42 +/- 2%, 35 +/- 0% and 0%, respectively. In addition to akinesis of the IVS during maximum flow, a specific part of the RV free wall adjacent to the IVS also had marked depression of contractions and overall RV contraction was nearly dependent on the RV free wall opposite to the IVS. Maximum LHB flow induced complete depression of the left ventricular cavity, a marked increase in RV volume, and depression of the RV ejection fraction on 2D-echo. Excessive or prolonged LHB reduces the RV wall motion capability and may lead to right heart failure. Our results suggest that an LHB ratio of about 75% is optimum to maintain normal cardiac function, particularly that of the right heart. PMID- 3841903 TI - [Evaluation of the atrial contribution to ventricular filling in patients with DDD pacemakers]. AB - To evaluate the usefulness of physiologic cardiac pacing, the trasmitral flow velocity was recorded using the pulsed Doppler method combined with 2-D echocardiography in 14 patients in whom a DDD pacemaker was implanted. DDD pacemakers were programmed to atrioventricular (AV) sequential pacing with AV intervals of 50, 100, 150, 200 and 250 msec, and VVI pacing modes at a heart rate of 70 bpm. The time-velocity integral (TVI) of the left ventricular (LV) inflow curve was obtained by digitizing the outline of the tracings and expressed in the percentage of that of AV sequential pacing with AV interval of 150 msec (the percent LV filling volume). The percent LV filling volume was 75% for 50 msec, 89% for 100 msec, 96% for 200 msec and 90% for 250 msec of an AV interval in AV sequential pacing. It was significantly smaller at AV intervals of 50, 100 and 250 msec than at an AV interval of 150 msec. It was significantly smaller (68%) in VVI pacing than at AV intervals of 100, 150, 200 and 250 msec in AV sequential pacing. The left atrial (LA) contribution to LV filling was assessed in terms of the fraction of TVI during LA contraction to that during total LV filling at the optimal AV interval (A/Fmax). The optimal AV interval was defined as the interval at which the maximum LV filling volume was achieved in individual patients. The A/Fmax showed a positive correlation with the percent increase of LV inflow volume, with conversion from VVI to AV sequential pacing with the optimal AV interval. It also showed a positive correlation with age. These results suggested that the LV inflow volume was greater in AV sequential pacing with the optimal AV interval than in VVI pacing, especially in patients with a large A/Fmax. In conclusion, pulsed Doppler echocardiography could be a useful, non-invasive technique to determine the indications for implanting a DDD pacemaker and the optimal AV interval in patients in whom DDD pacemakers are implanted. PMID- 3841904 TI - [Tricuspid regurgitation after corrective surgery of ventricular septal defect: evaluation using pulsed Doppler echocardiography]. AB - Using two-dimensional (2DE) and pulsed Doppler echocardiography (PDE), the prevalence, cause, and 2DE findings of tricuspid regurgitation (TR) occurring after corrective surgery for ventricular septal defect (VSD) were investigated. Fifty-one postoperative patients (25 boys and 26 girls) ranging in age from 2 months to 11 years and 9 months were studied. There were 23 preoperative patients with VSD and 26 children without cardiac disorders who served as controls. TR was diagnosed when pansystolic abnormal Doppler signals were obtained in the right atrial cavity by PDE. Twenty-three (45.1%) of the 51 postoperative patients, two (8.7%) of 23 preoperative patients, and none of 26 normal subjects were found to have TR. The prevalence of TR in postoperative patients was significantly (p less than 0.01) greater than those of the two control groups, but there was no significant difference between the control groups. The prevalence of TR was not relevant to sex or type of VSD, but TR was detected more frequently in patients with residual shunts (p less than 0.01), in those with postoperative pulmonary hypertension (p less than 0.01), and in those with morphological abnormalities of the tricuspid valve (p less than 0.01). In postoperative patients, the mean age at surgery of those with TR (mean +/- SD = 18.3 +/- 17.4 months) was younger than that of those without TR (29.9 +/- 21.4), and the cardiothoracic ratio (0.59 +/- 0.07 and 0.55 +/- 0.07, respectively), tricuspid annulus size (122 +/- 19 and 104 +/- 10% of normal), and right atrial size (143 +/- 34 and 106 +/- 12% of normal) were greater in patients with TR. The maximal extent of the TR signal correlated positively with right atrial size and tricuspid annulus size, and seemed to be a useful index for evaluating the severity of TR. Abnormal morphological findings of the tricuspid valve detected by 2DE were (1) no coaptation of the anterior and septal leaflets in systole (= discoaptation), (2) no coaptation of both leaflets throughout the cardiac cycle (= valve defect), and (3) apical displacement of the valve in systole (= bulging). (1) and (2) appeared to be associated with TR produced by operative injury; and (3), with functional TR. It was concluded that TR occurs frequently after corrective surgery for VSD, and 2DE and PDE were useful for evaluating the cause and severity of TR. PMID- 3841905 TI - [Noninvasive estimates of pulmonary hypertension and study of the etiology of ejection flow velocity profiles]. AB - Flow velocities at the right ventricular outflow tract were recorded for 36 patients including 12 with pulmonary hypertension. Doppler indexes [right ventricular preejection period (RPEP), right ventricular ejection time (RET), right ventricular acceleration time (RAT), RPEP/RET, RET/RAT] were calculated from flow velocity profiles, and noninvasive estimation of pulmonary hypertension was attempted using these indexes. The etiology of ejection flow velocity in pulmonary hypertension was studied using a simulation model. The following results were obtained. RAT shortened proportionately with an increase of pulmonary arterial pressure. RET/RAT correlated most significantly with pulmonary arterial pressure (r = 0.83, p less than 0.001). RET/RAT correlated inversely with stroke volume (SV) (r = -0.48, p less than 0.01); therefore, attention should be paid to SV, when estimating pulmonary arterial pressure, using the value of RET/RAT. The diagnostic value for pulmonary hypertension using RET/RAT was excellent; the predictive accuracy was 100%, sensitivity 75%, and specificity 100%, and it was possible to evaluate pulmonary hypertension using this method. According to the simulation model, an increase of both the pulmonary pulse wave velocity and the reflection of the pulse wave made the interval between the onset and the time of the peak flow velocity shorter. A flow velocity pattern similar to that of pulmonary hypertension was obtained. PMID- 3841906 TI - [Systolic honk in mitral stenosis: a case report]. AB - This case report describes a mitral systolic honk originating from the mitral valve and adjacent structures in a 52 year-old woman with mitral stenosis. The patient was hospitalized because of dyspnea. Auscultation of the heart revealed a grade 3/6 apical early systolic honk accompanied by an increased first heart sound, an opening snap and a diastolic rumble. The phonocardiogram demonstrated an early systolic honk at a frequency of 115 Hz. Intensity of the honk varied on beat to beat basis, increasing in the short preceding R-R interval compared to that in the long one. The M-mode echocardiogram showed early systolic fluttering of the mitral valve and chordae tendineae at the same frequency as the honk. The two-dimensional echocardiogram showed bulging of the anterior mitral leaflet toward the left atrium in early systole. After treatment with digitalis and diuretics, the early systolic honk disappeared in beats with preceding long R-R intervals (greater than 1100 msec). In beats without the honk, systolic fluttering of the mitral valve was not observed. The genesis of the early systolic honk is analogous to that of the honk audible in mitral or tricuspid valve prolapse. The bulging of the anterior mitral leaflet into the left atrium may produce vibrations of the mitral valve leaflets and adjacent structures. PMID- 3841907 TI - [Coronary sinus type atrial septal defect diagnosed by two-dimensional color Doppler echocardiography: a case report]. AB - This is a case report of coronary sinus type atrial septal defect (ASD) diagnosed preoperatively by two-dimensional color Doppler echocardiography. A 22-year-old asymptomatic woman was admitted for preoperative cardiac evaluation. A cardiac murmur and cardiomegaly had been noted at a routine examination which included electrocardiography and chest radiography, and M-mode echocardiography suggested the presence of a secundum type ASD. Color Doppler echocardiography revealed a left to right atrial shunt flow through the coronary sinus ostium into the right atrium. By peripheral contrast echocardiography, a negative contrast echo from the coronary sinus ostium was observed within the right atrium and persistent left superior vena cava was excluded. At operation, a 2 X 3 cm defect was demonstrated at the interatrial septum in the vicinity of the coronary sinus ostium. This is the first reported case of a coronary sinus type ASD diagnosed preoperatively by color Doppler echocardiography. PMID- 3841908 TI - Immobile right aortic leaflet in a case of the aortitis syndrome complicated by a left coronary sinus aneurysm. AB - A 37-year-old housewife had the aortitis syndrome complicated by acute aortic regurgitation and severe coronary insufficiency. Her echocardiogram at the level of the aortic valve ring revealed an enlarged left aortic sinus and an oscillating membranous structure centrally in the lumen of the aorta. At emergency surgery, there was no intimal flap in the ascending aorta, but there was a 4 cm diameter aneurysm of the left aortic sinus. The leaflets of the aortic valve per se were normal. Following its surgical repair and an aortic valve replacement, prednisolone was administered, and all abnormal laboratory data were corrected. The oscillating structure in the ascending aorta was considered to be the right aortic leaflet whose reduced mobility was caused by a distorted aortic valve ring due to the aneurysm. An immobile aortic leaflet is an extremely rare echocardiographic finding worthy to be reported. PMID- 3841910 TI - [Prediction of coronary lesions by two-dimensional echocardiography in patients with healed myocardial infarction]. AB - Regional left ventricular wall motion abnormalities were assessed by two dimensional echocardiography (2-DE) in 66 patients with healed myocardial infarction (MI) and the results were compared with those of coronary angiography which was performed at nearly the same time as 2-DE. The left ventricular wall was divided into 14 segments and asynergy was assessed in each segment. To compare the severity of segmental asynergy with coronary artery lesions, relation between segments and coronary artery perfusion was assumed as follows: the anterior wall, anterior septum and apex corresponded to the anterior descending artery (LAD); the lateral and inferior walls corresponded to the left circumflex artery (LCX); and the posterior septum and inferior wall corresponded to the right coronary artery (RCA). One vessel disease: In all 24 patients with MI induced by LAD lesions, regional asynergy was identified in the anterior wall, anterior septum and apex. All patients had advanced asynergy (severe hypokinesis, akinesis or dyskinesis) except one with subendocardial infarction. Advanced asynergy was identified in the other segments including the lateral wall (one patient) and the posterior septum (11 patients), but such asynergy was not associated with that of the inferior wall. In four patients with MI induced by RCA lesions, regional asynergy appeared in localized segments of the posterior septum and inferior wall, and the asynergy was severe in all patients except one in whom collaterals were well-developed. In four patients with MI induced by LCX lesions, asynergy was observed in both the lateral and inferior walls. In only one patient, mild asynergy was identified in the apex. Multi-vessel disease: In both groups with double vessel (16 patients) and triple vessel (16 patients) disease, asynergy was recognized in the affected areas of the major coronary artery which was considered responsible for the infarction, irrespective of the severity of the coronary stenosis. Also, there was no significant correlation between the severity of coronary artery stenosis and segmental wall motion abnormalities in non-infarcted areas. No significant correlation was observed between the severity of regional wall motion abnormalities in the infarcted areas and the degree of development of collaterals. In patients with MI induced by LAD lesions, more extensive asynergy in the anterior wall and anterior septum at the basal portion was observed in the patient group with proximal stenosis than in the group with distal stenosis.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3841909 TI - [A case of pentalogy of Fallot with numerous collaterals evaluated by magnetic resonance imaging: a report of an adult case]. AB - In this report, the diagnostic value of magnetic resonance imaging (MRI) was compared with that of two-dimensional echocardiography, computed tomography and cardiac catheterization in a patient with pentalogy of Fallot who survived to her fortieth year. The advantages and disadvantages of MRI in diagnosing the present case were as follows: The cardiovascular system, with the exception of atrial septal defect, was evaluated precisely. Collateral vessels were detected using MRI, but impossible with other non-invasive methods. MRI was particularly suitable for imaging the cardiovascular system because of the high contrast between the lower intensity signal of the blood and higher intensity signal of the myocardium and blood vessel walls. Using MRI, data acquisition time was 1.5 min per section. Gated MRI required more time for data acquisition. However, various oblique tomographic projections and very clear static images could be obtained using gated MRI. MRI should be one of the best diagnostic techniques for diagnosing congenital heart disease. PMID- 3841911 TI - [Coronary collaterals in patients with total obstruction of the proximal left anterior descending artery: their pathways and functional significance]. AB - The relationship of patterns of collateral pathways and the functions of collaterals in patients with proximal occlusion of the left anterior descending artery (LAD) was analyzed by coronary arteriography and left ventriculography. Forty-seven patients with dominant right coronary artery (RCA) as anatomic variations had nearly the same filling areas from three major collateral pathways from the RCA to the LAD via conus branches, marginal branches, and septal perforator. The grades of collateral flows were classified as good, fair and poor according to the sizes and numbers of collateral channels, and the filling density of contrast in each collateral and three (basal, mid and apical) segments of the main trunk of the LAD. On left ventriculography in the right anterior oblique projection, the anterior wall was divided into five segments, and the regional ejection fraction in each segment was measured from end-diastolic and end-systolic areas. Three main collateral pathways and connections to the LAD were observed from the RCA. Those were the conus branches to the basal-mid LAD, the marginal branches to the mid-apical LAD, and the posterior descending branches to the basal-mid LAD via the septal perforators. Only seven patients showed normal contraction in all of the segments (Group I). In seven patients with normal contraction in the basal-mid segments and reduced contraction in the apical segment of the anterior wall, the main collateral pathways from the RCA to the LAD were the posterior descending branches via the septal perforators (Group II). In 10 patients with reduced contraction in the basal-mid segments and normal contraction in the apical segment of the anterior wall, the main collateral pathways from the RCA were the conus branches and/or the marginal branches to the LAD (Group III). In the other 23 patients with reduced contraction in entire segments (Group IV), the patterns of segmental contraction were similar to those of either Group II or Group III. These findings indicate that in the majority of cases collateral circulation from the RCA did not preserve wall contraction in all segments perfused by the occluded LAD at rest, and suggest that various patterns of segmental contraction may be influenced by the dominant of collateral pathways. PMID- 3841912 TI - [Pulsed Doppler evaluation of left ventricular pressure and pressure difference in hypertrophic obstructive cardiomyopathy]. AB - To assess the patho-physiological severity of hypertrophic obstructive cardiomyopathy (HOCM), the systolic pressure differences caused by the functional stenosis across the outflow tract of the left ventricle must be evaluated. The present study explored and proposed a non-invasive method predicting the pressure difference across the intraventricular obstruction and the pressure proximal to the obstruction by using pulsed Doppler technique, guided by simultaneous two dimensional echocardiography. The ultrasonic equipment recently developed in our laboratory was used. It consisted of a 3.0 MHz pulsed ultrasonic transducer with a 4.4 KHz repetition rate and a mechanical sector scanner equipped with a single concave transducer 1.3 cm in diameter having a 70 mm radius of curvature. The sample volume was approximately 3 X 3 X 3 mm. Doppler signals obtained were subjected to a real-time analyzer with a fast Fourier transformer, and were simultaneously recorded on a thermal recorder as a spectral display together with an M-mode echocardiogram, lead II ECG, phonocardiogram and mechanocardiogram. Ten adults with HOCM were the subjects in the present study. For six of the 10, good pressure tracings were obtained. The pressure differences estimated by the maximum velocity as measured from the Doppler signals at the left ventricular (LV) outflow tract and the pressure gradients as obtained by cardiac catheterization were subjected to correlative analysis. Prior to investigating the pressure differences, the site and mechanism of the outflow obstruction in HOCM were studied in two cases using two-dimensional echocardiography in the longitudinal- and short-axis views. The obstruction was produced during systole by posteroinferior displacement of the hypertrophied interventricular septum and by abnormal anterosuperior movement of the hypertrophied, and elongated anterior or posterior papillary muscles. Thus, a concentric and centripetal narrowing was formed at the midportion of the outflow tract. In some cases, a bottle-shaped chamber was clearly observed in the apical area. Ultrasonic Doppler examinations were performed by the apical approach. Flow velocity patterns in the apical region or proximal to the obstruction had two peaks with a narrow spectrum in systole. At the distal portion or downstream the obstruction had a pattern with a narrow spectrum and a sharp single peak. To measure the maximum flow velocity, Doppler velocity patterns recorded immediately distal to the obstruction were used.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3841913 TI - Intracranial hypertension without hydrocephalus due to small bleedings from a giant carotid aneurysm. PMID- 3841914 TI - Epidemiology and sequelae of head injury in San Marino Republic. AB - A study of head injuried patients was carried out in the smallest nation in the world (Republic of San Marino) from January 1981 to December 1982. The results show an epidemiological incidence of 468 cases/10(5) population/year in regards to Hospital admissions, whereas the cases are 694/10(5) population/year when taking into account also patients seen only by Accident and Emergency Department. The consequences of the head injury (Post Traumatic Syndrome, PTS) were studied in 187 patients having comparable features on admission and discharge, and being all residents of the Republic of San Marino. Factors significant in determining a PTS seem to be a history of previous head injuries, the presence of previous neuropsychiatric disturbances and an abnormal E.E.G. on admission. The time of onset of the syndrome, associated with the above mentioned factors, can be important in determining whether the PTS is of neurotic or organic origin. PMID- 3841915 TI - Neuropsychological sequelae after head injury with mesencephalic coma in childhood. AB - Eleven children aging between 4 years 11 months and 12 years 6 months were examined periodically over five years following closed head injury with mesencephalic coma (Plum and Posner's definition). It was found that although transient sequelae (neurological and cognitive) on coma resolution were severe, long-term recovery was generally good. The subjects had drug, neurological and psychological treatment during the 2-5-years period and showed apparently better recovery than reported in literature for trauma in adults. This suggests that the mildly controversial "age" variable is highly important in long-term prognosis of impairments following head injury. Further studies will be necessary; with the systematic use of the same standardised testing procedures in all studies, we suggest to obviate the problems in collation arising from discrepancies in methodological, neurological and psychological techniques. PMID- 3841916 TI - The benign acute epidural haematoma. AB - The Authors propose a new approach to the treatment and prognostic evaluation of post-traumatic supratentorial acute epidural haematoma (PSAEH). As far as this lesion is concerned a group of patients with a favourable prognosis and without indications for a surgical treatment may be identified. To this purpose, the clinical picture, characterized by a slight symptomatology undergoing a regression phase (stupor, headache, etc.) and a skull CT-scan, characterized by a slight shift of the middle line structures and by the volume of haematoma less than 55 cc, are important aids. PMID- 3841917 TI - Pseudoclaudication in lumbar disc protrusions. Contribution in understanding the etio-pathogenetic factors of the syndrome and surgical results in eight cases. AB - Eight cases of pseudoclaudication in patients with herniated lumbar discs are reported. Clinical features and variations in clinical patterns are briefly described. The hypotheses concerning the mechanisms causing pseudoclaudication, formulated by some authors, are discussed. It is suggested that this particular syndrome might be related to an arrangement of the spinal circulation with one lumbar or sacral accessory artery playing an important role in supplying the lower portion of the spinal cord. PMID- 3841918 TI - Peripheral PICA aneurysm. Case report. AB - One case of aneurysm of the right distal posterior inferior cerebellar artery (PICA), arising from the telo-velo tonsillary segment, is reported; the patient, a 73 years-old woman, was successfully treated by clipping procedure. Few similar cases are reported in literature. Among all intracranial aneurysms, PICA aneurysms account for 0.5-0.7%; most of them arise from vertebro-basilar junction, while only 72 distal PICA aneurysms are reported in literature, till now, with complete anatomo-radiological study. We recommend four vessel angiography because these aneurysms are likely to be missed. When determining the surgical approach it is important to know from which segment the aneurysm arises. PMID- 3841919 TI - Complete removal of a huge olfactory grooves meningioma in a child. Case report. AB - The clinical, radiological and histological findings of a huge olfactory grooves meningioma in a 14 years-old girl are described. Good result after complete removal is stressed and concerning literature is reviewed. PMID- 3841920 TI - Giant osteoma of the cranial vault with acromegaly and hydrocephalus. A case report. AB - A case of acromegaly associated to a giant osteoma of the cranial vault and hydrocephalus in a young woman is reported. It can be suggested that acromegaly favoured the marked growth of the osteoma. Hydrocephalus resulted consequent to both the compression of the superior longitudinal sinus by the tumor and alteration of the CSF resorption. The rarity of giant osteomas of the cranial vault associated with intracranial hypertension is pointed out. PMID- 3841921 TI - [Fibrosis and cirrhosis in the rabbit induced by diethylstilbestrol and its inhibition with progesterone]. PMID- 3841922 TI - [Physiopathological mechanism of pulmonary infarction]. PMID- 3841923 TI - [Abdominal tuberculosis]. PMID- 3841924 TI - Progesterone as therapy for retroperitoneal fibrosis. PMID- 3841925 TI - [Peripheral nerve pathology in ataxia telangiectasia]. PMID- 3841926 TI - [Autotransplantation of the spleen]. PMID- 3841927 TI - Marked heart involvement in Becker's type muscular dystrophy. PMID- 3841928 TI - [Systemic lupus erythematosus and ascending motor paralysis]. PMID- 3841929 TI - [Respiratory mucus]. PMID- 3841930 TI - [Cirrhotic hydrothorax]. PMID- 3841931 TI - [Acute and reversible worsening of multiple sclerosis treated with plasmapheresis. A form of Uhthoff symptom?]. PMID- 3841932 TI - [Clinical diagnosis of cerebrovascular accidents without changes in consciousness. Its correlation with computed tomography]. PMID- 3841933 TI - [Still's disease in children and adults. Comparative study of its clinical, serological and histocompatibility characteristics]. PMID- 3841934 TI - [Thalassemia major: chelating therapy with deferoxamine]. PMID- 3841935 TI - [Effects of verapamil in atrial fibrillation]. PMID- 3841936 TI - [M mode echocardiography in mitral annulus calcification]. PMID- 3841937 TI - [Etiology of acute viral hepatitis in a pediatric population]. PMID- 3841938 TI - [Risk of Swan-Ganz catheterization in primary pulmonary hypertension]. PMID- 3841939 TI - [medical treatment of a cerebral tuberculoma]. PMID- 3841940 TI - [Importance of cytogenetic changes in the process of carcinogenesis]. PMID- 3841941 TI - [Oncogenes, chromosome abnormalities, and neoplastic development in Burkitt lymphoma]. PMID- 3841942 TI - [Acquired immunodeficiency syndrome: experience in Argentina]. PMID- 3841943 TI - [Treatment of chronic multiple sclerosis with hyperbaric oxygenation]. PMID- 3841944 TI - [Auriculoventricular conduction in the electrocardiogram of the normal mouse]. PMID- 3841945 TI - [High doses of 5-fluorouracil with allopurinol: doubtful therapeutic efficacy]. PMID- 3841946 TI - [Effect of retinoic acid on keloid scars]. PMID- 3841947 TI - An improved alcian-blue stain for the demonstration of acid mucins. PMID- 3841948 TI - [Epithelial dysplasias of the gallbladder]. PMID- 3841949 TI - [Morphologic changes in the liver of the rat after ligation of the common bile duct. Model for rapid experimental induction of cirrhosis]. PMID- 3841950 TI - Acute glomerulonephritis in human brucellosis. Report of a case. PMID- 3841951 TI - [Chondrosarcomatous metaplasia in carcinoma of the human breast: its myoepithelial nature. Morphologic and immunohistochemical study of a case with review of the literature]. PMID- 3841952 TI - [Pulmonary endometriosis: presentation of a case and review of the literature]. PMID- 3841953 TI - [Renal microcarcinoma identified by urinary cytology]. PMID- 3841954 TI - Partial proximal trisomy 15 (p ter----q 14) in a young girl. PMID- 3841955 TI - [Pigmentations and melanotic lesions in unusual sites]. PMID- 3841956 TI - [Congenital sideroblastic anemia with vascularization of erythroid and myeloid precursors, severe dystrophy and hepatic steatosis]. PMID- 3841957 TI - [Transmissible venereal sarcoma in a dog (Sticker's sarcoma) in Somalia]. PMID- 3841958 TI - [A trial of treating bovine dermatophilosis in Cameroon. The value of an antibiotic and acaricide bath combination]. PMID- 3841959 TI - A serological survey for Toxoplasma antibodies in cattle, sheep, goats and camels (Camelus dromedarius) in the Sudan. PMID- 3841960 TI - The effect of Babesia bigemina infections caused by cattle ticks on Nigerian economy. PMID- 3841961 TI - Note on a case of generalised hydatidosis in a dromedary. PMID- 3841962 TI - A severe outbreak of sarcoptic mange among goats naturally infected with a sheep strain of Sarcoptes scabiei. PMID- 3841963 TI - [Preliminary note on the sensitivity of Amblyomma variegatum and Boophilus decoloratus (Acarida, Ixodidae) to organophosphate acaricides in the People's Republic of the Congo]. PMID- 3841964 TI - The diurnal activity of Culicoides kingi in northern Sudan. PMID- 3841965 TI - Disease constraints on village goat production in southwest Nigeria. PMID- 3841966 TI - [Isoniazid acetylation in hepatic cirrhosis]. PMID- 3841967 TI - [Placental alkaline phosphatase levels in serum of pregnant women: study in Salvador, Bahia]. PMID- 3841968 TI - [Dissociation between leukopenia and hypoxemia during hemodialysis]. PMID- 3841969 TI - [Femorotibial bypass with non-reversed saphenous vein. Report of 5 cases]. PMID- 3841970 TI - [Ultrastructural aspects of the reticular dermis in various ages after birth]. PMID- 3841971 TI - [Alternative therapy in adhesions of the labia minora]. PMID- 3841973 TI - [Thoracic peridural anesthesia for cesarean section: a new alternative?]. PMID- 3841972 TI - [The role of superficial parotidectomy in selected cases of malignant skin tumors in the neck and head region]. PMID- 3841974 TI - [Nutritional anemia and intestinal parasitosis in children under 5]. PMID- 3841975 TI - [Cutaneous tumoral implants by pleural puncture biopsy]. PMID- 3841976 TI - [Penetrating cardiac injuries: experience in 8 cases]. PMID- 3841977 TI - [Serum haptoglobin levels and fetal maturity]. PMID- 3841978 TI - [Volvulus of the small intestine]. PMID- 3841979 TI - [Hemangiomatosis of the cecum associated with adenocarcinoma of the rectum]. PMID- 3841980 TI - [Myelolipoma of the adrenal gland]. PMID- 3841981 TI - [Fibrosarcoma of the stomach: presentation of 1 case]. PMID- 3841982 TI - [Electrophysiological studies of preganglionic neurons in the superior salivatory nucleus of cats]. PMID- 3841983 TI - [C-H3 enhanced effect of NGF on the dorsal root ganglion cells of chick embryo in culture]. PMID- 3841984 TI - [Effect of raphe dorsalis and locus coeruleus stimulation on evoked potential in the hypothalamic arcuate nucleus area]. PMID- 3841985 TI - [Influence of oleic acid on gastric mucus secretion in indomethacin-induced gastric mucosal lesions in rats]. PMID- 3841986 TI - [Acute hypoxic response of the cardiac pump in conscious dogs]. PMID- 3841987 TI - [Relationship between coronary collateral flow and hemorheologic changes in the early phase of acute myocardial ischemia in the dog]. PMID- 3841988 TI - [Observations on phrenic discharges during the expiratory phase in the rabbit]. PMID- 3841989 TI - [A comparative study of the effect of intraocular pressure elevation on ERG and VECP in the rabbit]. PMID- 3841990 TI - [A pressor effect induced by distending the thoracic descending aorta in dogs]. PMID- 3841991 TI - [Cholinergic control of coronary resistance in the dog]. PMID- 3841992 TI - Main directions of teaching social hygiene and organizing health care in present day. PMID- 3841993 TI - Comparative study of the effectiveness of three models of primary health care (PHC). PMID- 3841994 TI - Preventing and fighting cancer in the Socialist Republic of Romania. PMID- 3841995 TI - [The importance of determining exogenous and endogenous aliphatic amines in the human body]. PMID- 3841996 TI - The effect of vinpocetine on cerebral blood flow in patients with cerebrovascular disorders. PMID- 3841997 TI - Effects of vinpocetine on platelet aggregability and erythrocyte deformability. PMID- 3841998 TI - Effect of TCV-3B tablets on the thyroid function in patients with cerebrovascular disorders. PMID- 3841999 TI - Cavinton in the treatment of acute stroke. PMID- 3842000 TI - Effects of TCV-3B (vinpocetine) on blood viscosity in ischemic cerebrovascular diseases. PMID- 3842001 TI - Oral treatment of vaginal mycoses with Nizoral tablet. PMID- 3842002 TI - Experiences with Canesten preparations. PMID- 3842003 TI - Health problems and tasks in developing countries. PMID- 3842004 TI - Current problems of the clinical use and laboratory control of heparin treatment. PMID- 3842005 TI - Venoruton in the therapy of central retinal vein occlusion. PMID- 3842006 TI - A new compound of tetracyclic structure, maprotiline (Ludiomil) in the treatment of depression. PMID- 3842007 TI - Observations with brulamycin treatment in paediatric cases. PMID- 3842008 TI - Myasthenia gravis: control of drug-induced cholinergic symptoms with dexetimide. PMID- 3842009 TI - Phlebodynamic effect of Doxium in chronic venous insufficiency. PMID- 3842010 TI - Clinical evaluation of Calypsol used for induction of anaesthesia for cesarean section. PMID- 3842011 TI - Long-term Viskaldix therapy in the treatment of hypertensive patients. PMID- 3842012 TI - Treatment of otolaryngological mycoses with Nizoral. PMID- 3842013 TI - A comparison of zixoryn and phenobarbital induced infusion cholangiography in hepatic patients. PMID- 3842014 TI - Drug allergy. PMID- 3842015 TI - Use of cavinton drip infusion in ophthalmology. Effect of cavinton drip infusion on the peripheral resistance of internal carotid artery. PMID- 3842016 TI - Treatment of patients suffering from dermatomycoses with nizoral tablet. PMID- 3842017 TI - Use of Reanal stone analyser kit for the analysis of ignition residue of urinary calculi. PMID- 3842018 TI - Antipyretic effect of naprosyn syrup in childhood. PMID- 3842019 TI - Treatment of iron-deficiency anaemia of infancy with bebe-tardyferon depot coated tablet. PMID- 3842020 TI - Treatment of enterobiasis with mebendazole. PMID- 3842021 TI - The effects of 19-nor-aldosterone on blood pressure of adrenalectomized spontaneously hypertensive rats. AB - The relative hypertensinogenic potencies of recently synthesized 19-nor aldosterone and its precursor 19-OH-aldosterone were assessed in comparison to that of aldosterone (Aldo) in young (6-week-old) adrenalectomized (ADX) spontaneously hypertensive rats (SHR). Infusion of 19-nor-aldosterone for 2 weeks by Alza mini-osmotic pumps caused significant, dose-dependent increases in the systolic blood pressure (BP) of young ADX SHR; dosages of 0.1 and 0.5 microgram/day raised the BP from 127 +/- 2 mmHg to 164 +/- 9 and 180 +/- 11 mmHg, respectively. During this period, control ADX SHR receiving vehicle only remained normotensive. Similar increases in BP were seen only with infusion of slightly higher dosages of Aldo (0.5 and 1.0 micrograms/day). In contrast, 19-OH aldosterone infused at higher dosages (10 or 25 micrograms/day) caused little change in BP of ADX SHR. Full suppression of plasma renin activity (PRA) was observed with 0.1 and 0.5 microgram/day 19-nor-aldosterone, whereas Aldo caused similar decreases in PRA only at dosages of 0.5 microgram/day and higher. Interestingly, although infusions of 19-OH-aldosterone did not cause a significant change in BP, these dosages (10 and 25 micrograms/day) significantly suppressed PRA. These studies which show that 19-nor-aldosterone is equipotent to Aldo, and perhaps slightly more active in ADX SHR, indicate that 19-nor aldosterone is a potentially important hypertensinogenic steroid. PMID- 3842022 TI - Changes in the sedimentation properties of cytosolic androgen receptors associated with activation in vitro and in vivo. AB - In cell-free systems androgen receptor (AR) labeled with (3H)DHT at 0 degrees C in the presence of 50mM molybdate remains unactivated (less than 3% binding to nuclei) and untransformed (7-8S on sucrose density gradients containing 0.4M KCl and 50mM molybdate). In the absence of molybdate, however, these complexes undergo activation and transformation even at 0 degrees C, albeit, very slowly. Incubation of unactivated, untransformed AR complexes at 18 degrees C, or at 0 degrees C in the presence of 0.4M KCl, greatly accelerated both activation and transformation. Activation and transformation are also associated with formation of high affinity (3H)DHT-receptor complexes as indicated by decreased rates of (3H)DHT dissociation from the receptor. Cytosolic AR complexes labeled with (3H)DHT in tissue slices at 37 degrees C, or in vivo, undergo rapid activation, transformation and nuclear translocation. The data suggest that activation and transformation of cytosolic AR in cell-free systems is associated with changes in the physicochemical properties of AR similar to those occurring upon hormone binding in intact cells and in vivo. PMID- 3842023 TI - Potential long-acting contraceptive agents: esters and ethers of testosterone with alpha- and/or beta-chain branching. AB - The synthesis of ten esters and two ethers of testosterone (17 beta hydroxyandrost-4-en-3-one) is described. All these possess some form of alpha - and/or beta - substitution in the ester/ether side-chain. The work was undertaken in order to evaluate the long-acting antifertility effect of such compounds in males. PMID- 3842024 TI - Unexpected effects of nalmefene, a new opiate antagonist, on the hypothalamic pituitary-gonadal axis in the male rat. AB - In order to gain additional information on the role of brain opioid peptides in the regulation of the hypothalamic-pituitary-gonadal axis, we studied the effects of nalmefene, a new opiate antagonist, on gonadotropin and testosterone secretion in male rats. The results were compared with those obtained with naloxone, a well studied antagonist. Acute injections of either nalmefene or naloxone (2 mg/kg) produced 4-fold increases in LH and testosterone secretion. In castrated male rats treated with testosterone propionate (TP), nalmefene (10 mg/kg) reversed the androgen negative feedback on LH secretion; surprisingly, when higher doses (25 and 50 mg/kg) were injected, the compound lost its ability to antagonize the testosterone-induced inhibition of LH levels. In contrast, naloxone was able to increase LH levels in TP-treated castrated rats even at the highest dose tested (50 mg/kg). Chronic administration of these antagonists resulted in suppression of the acute release of LH and T secretion in nalmefene-treated but not in naloxone-injected animals. These data are consistent with previous observations suggesting that opioid peptides a) exert a tonic inhibitory effect on LH and testosterone production and b) participate in the negative androgen-induced feedback control of LH secretion. Our results also show that the antagonistic action of nalmefene, but not naloxone, is reversed when higher doses are used or following chronic administration. PMID- 3842025 TI - On the stability of salivary progesterone under various conditions of storage. AB - The concentrations of progesterone in saliva of women exhibited significant decreases when the fluid was stored in plastic vials for 3 days at room temperature or 37 C. The addition of antibiotics or a variety of metabolic poisons to the saliva prior to storage did not prevent the progesterone decrement. However, the addition of albumin (2 g/dl) was protective, suggesting that the protein impeded adsorption of salivary progesterone by the plastic container. Saliva could be maintained at 37 C for 3 days in glass vials or at -20 C in plastic containers for indefinite periods without loss of progesterone titers. These data indicate that a patient under luteal function assessment may collect saliva samples in glass vials at regular intervals during the latter half of her cycle and store them in the freezer compartment of the refrigerator until shipment by mail to the laboratory for progesterone assay. With special care, plastic vials charged with albumin may also be used. PMID- 3842026 TI - A simple enzyme-linked immunosorbent assay for testosterone. AB - A new, enzyme-linked, immunosorbent assay for testosterone is described. The assay uses horseradish peroxidase coupled to testosterone as the tracer and offers the same sensitivity and reliability but greater convenience than radioimmunoassay. The assay is also simpler and more rapidly completed than previously described assays for testosterone. PMID- 3842027 TI - Renal morphology and function and urine electrolytes in experimental acute renal failure produced by cyclosporine and ischemia. AB - It has been difficult to produce a good animal model for cyclosporine nephrotoxicity. It has been suggested that by following 20 minutes of renal ischemia with four daily doses of cyclosporine 60 mg/kg intraperitoneally, one can create a model of reproducible renal failure. We observed excessive mortality (65%), due in part to cyclosporine's CNS effects, with these combined insults in the Munich Wistar rat. In contrast, cyclosporine alone in this dosage produced only 17% mortality and resulted in a similar degree of renal failure. Pair-fed and pair-watered vehicle and saline controls were used. The morphologic changes brought about by the castor oil vehicle of the parenteral cyclosporine solution were qualitatively similar to those brought about by cyclosporine by light microscopy, although the severity of the changes was considerably less in the vehicle-treated groups. However, by electron microscopy, pale lipid vacuoles were seen only in the cyclosporine-treated groups, whereas dense alterations in lysosomes and dilated endoplasmic reticulum also were seen in other groups. Urine sodium determined by flame photometry and urine chloride determined by Saltex reagent strips tended to be high in the initiation phase of cyclosporine-induced acute renal failure and low in the maintenance phase. In animals that developed acute renal failure following the combination of ischemia and cyclosporine, the initial urine sodium and chloride were significantly correlated with the eventual degree of renal failure. The use of Saltex urine chloride sticks in clinical urine samples showed that the readings correlated well with urine sodium and chloride determined by conventional methods, suggesting that these strips may be useful in making a quick diagnosis in the setting of acute renal failure. PMID- 3842028 TI - Glomerular filtration rate variations in patients with solitary kidneys after a protein load. AB - The effects of an oral protein load, consisting of 1.5 g/kg body weight as cooked red meat, on: serum creatinine (SCr); glomerular filtration rate (GFR) ([125I]iothalamate clearance); and "renal functional reserve" (test-baseline GFR) (RFR) were evaluated in two groups of patients with solitary kidneys (SK). Group 1 had 7 patients with SCr of 1.00 to 1.40 mg/dl. Group 2 had 7 patients with SCr of 1.40 to 3.00 mg/dl. SCr and GFR were recorded during the 4 hours preceding and the 4 hours following the protein load. SCr rose significantly in both groups after protein load (from 1.16 to 1.19 mg/dl in Group 1, from 1.65 to 1.80 mg/dl in Group 2). GFR changes were: from 114.8 to 195.5 ml/min, from 59.0 to 107.7 ml/min, respectively in the two groups. The RFR was smaller in SK patients with early renal failure (ERF) (Group 2), 48.70 ml/min, than in those with normal renal function (Group 1), 80.77 ml/min. However, despite the smallest RFR, SK patients with ERF had the highest percentage increase in their GFR. In conclusion, in SK patients a hemodynamic adaptation to protein intake is present at different levels of renal function, and further studies are necessary to establish whether protein intake should be monitored in these patients. PMID- 3842029 TI - Renogram evaluation using an equation of balance for clearance and transit time determination. AB - A method of [123I]hippuran (OIH) renogram evaluation is proposed, which delivers transition rates for total and split renal clearance. It is based on the reconstruction of the true kidney input, using an equation of balance and a two compartment model assumption of OIH kinetics. Results are compared with clearance determinations using whole body principles and transit time determination by deconvolution. It is shown that the reconstructed true input corresponds to the plasma activity while the vascular volume of distribution corresponds to the blood. PMID- 3842030 TI - Sensitivity of cortical transit and furosemide response in the diagnosis of renal obstruction. An experimental model. AB - Several radionuclide parameters are routinely used for the diagnosis of renal obstruction. In order to evaluate the sensitivity of those parameters, an experimental model of partial ureteral obstruction in rats was used. Neither the cortical transit time, nor the response to furosemide could serve to discriminate between obstructive and nonobstructive kidneys. These parameters were, however, more or less related to the degree of impairment of the single kidney glomerular filtration rate and should probably be considered as functional parameters reflecting the grade of the obstructive phenomenon. PMID- 3842031 TI - Newer diagnostic methods in nephrology and urology. Proceedings of the Fourth International Symposium of Nephrology. Montecatini Terme, Italy, April 17-19, 1985. PMID- 3842032 TI - Microalbutest: a new screening method for detecting microalbuminuria in diabetes mellitus. AB - The ability of a new qualitative test tablet, Microalbutest, to detect diabetics with microalbuminuria in a screening procedure was evaluated. Samples of 87 morning urines from diabetics with albumin concentrations over the range 0-200 micrograms/ml as well as 20 samples from healthy subjects range 1.2-12.2 micrograms/ml were investigated, and the results compared to measurements obtained by radioimmunoassay (RIA). For urines with RIA values above 40 micrograms/ml the test was positive in 96.4% with only 0.26% false negatives. Below 40 micrograms/ml the test results were more uncertain, an average of 30% could not be read as positive or negative. The false negative rates were 15.6% in the range 21-30 micrograms/ml and 4.2% in the 31-40 micrograms/ml range. The false positive rates were 5.7% below 10 micrograms/ml, 8.3% below 15 micrograms/ml, and 2.5% in the controls. The test was found useful as a screening method. PMID- 3842034 TI - Society for the Advancement of Contraception. Third annual meeting. Bordeaux, France, September 9-13, 1985. Abstracts. PMID- 3842033 TI - Assessment of renal injury by urinary enzymes. AB - The use of serum enzymes in the detection of tissue damage due to disease or toxins is now well established but the full potential for the use of urinary enzymes to detect and monitor kidney damage has not been realized. There are a number of problems involved in dealing with urinary enzymes and these have not always been fully appreciated by research workers. This report discusses some of the difficulties and how they can be overcome. PMID- 3842035 TI - Muscle cell membranes from early degeneration muscle cell fibers in Solenopsis are leaky to lanthanum: electron microscopy and X-ray analysis. AB - Lanthanum infusion techniques, transmission electron microscopy, and X-ray microanalysis were utilized to compare the permeability of muscle cell membranes from normal and degenerating muscle fibers of Solenopsis spp. In normal fibers, the electron-dense tracer was limited to components of the sarcotubular system. However, the insemination-induced degeneration of muscle fibers was characterized by the presence of an electron-dense precipitate within the myofibrils and mitochondria as well as in the extramyofibrillar spaces. The electron-dense material was subsequently identified by elemental analysis to be lanthanum. Such data indicate that one of the earliest stages of muscle degeneration involves an alteration in cell membrane permeability. PMID- 3842036 TI - Blood supply of the caudal mediastinal lymph node in sheep. AB - We investigated the arterial supply to, and the venous drainage from, the caudal mediastinal lymph node (CMN) in 18 anesthetized and exsanguinated sheep. The purpose of this gross anatomic investigation was to determine the CMN's blood supply so that a structural base can be used to interpret studies of the bronchial circulation's role in the pathogenesis of pulmonary edema. In ten sheep, we cannulated the bronchoesophageal artery at its origin from the aorta and injected Microfil. This artery, which branches into cranial and caudal divisions 2-4 mm distal to its origin, supplied the esophagus, trachea, bronchi, and visceral pleura. The CMN is supplied by the caudal division, as it courses between the CMN and aorta. Microfil injected through the thoracic aorta did not enter the CMN when the bronchoesophageal artery was ligated at its origin. These results indicate that only the bronchoesophageal artery supplies the CMN. In eight sheep we cannulated the vein at the head of the CMN (dorsal mediastinal vein) and injected Microfil, both peripherally and centrally. Peripherally, injected veins reached the CMN and esophagus. The dorsal mediastinal vein extended posteriorly to the CMN in three of the eight sheep, eventually emptying into the left azygos vein near the diaphragm. Centrally, the dorsal mediastinal vein joined the left azygos vein near the heart in six of the eight sheep, including the three in which the dorsal mediastinal vein extended posteriorly to the CMN. In the remaining two sheep the dorsal mediastinal vein drained centrally into the right azygos vein. We conclude that the bronchoesophageal artery supplies the CMN and that either the left or right azygos vein drains it. PMID- 3842037 TI - Globule leukocytes in the respiratory epithelium of human upper airways: an ultrastructural study. AB - The ultrastructure of globule leukocytes is described in the nasal and tracheal respiratory epithelium of three boys suffering from chronic airway infections. The globule leukocytes lie free in the intercellular spaces and appear to be migratory cells. They are characterized by intracytoplasmic membrane-bound globules, variable in number, size, shape, and internal structure. The globules may apparently release their content between the neighboring epithelial cells. Human globule leukocytes are also characterized by the presence of intracytoplasmic rod-shaped bodies, the significance of which is not known. They usually display an extended juxta-nuclear Golgi apparatus, presumably involved in the formation of the globules. Comparison of the fine structure of the globules in the globule leukocytes with that of the granules found in the subepithelial mast cells does not support a mast cell origin for human globule leukocytes. On morphological grounds, natural killer cells are postulated as a possible source for globule leukocytes. The function of globule leukocytes is briefly discussed. We presume that the globule leukocytes belong to the group of migrating and secreting cells involved in the defense of the organism against foreign material. PMID- 3842038 TI - Migration of macrophages from the marginal zone to germinal centers in the spleen of mice. AB - Histological observations of the mouse spleen were carried out at different times after intravenous carbon injection. Large carbon-laden macrophages appeared in great numbers in the marginal zone soon after injection. They came together favorably around the germinal centers. Possible migration of these cells toward the germinal centers diffusely from the periphery of the white pulp or through the periarterial lymphoid sheath was suggested. These macrophages entered the germinal centers on a large scale and clustered for a long period--at least 180 days. Since the same type of macrophages were observed persistently in the marginal zone, it was thought that some of them might arise from the blood stream. Possible migration of these cells from the marginal zone toward the germinal centers was also persistently observed. A second type of much smaller carbon-laden macrophages was seen in the white pulp. However, they never showed any favorable localization in the germinal centers as did large carbon-laden macrophages. PMID- 3842039 TI - Interruption of the middle cerebral artery in 10-day-old rat alters normal development of distal collaterals. AB - Pial surface arterioles join rami of the anterior and middle cerebral arteries (MCA) in 10-day-old normal Wistar rats. Normally, the anastomosing branches differentiate into small-diameter vessels with significantly greater tortuosity (length) by 56 days of age. After interruption of th e MCA in 10-day-old rats, large-diameter, relatively straight collaterals were observed 46 or 90-110 days later. Evidently altered hemodynamic factors, as the result of MCA interruption, prevent the development of a normal pattern of arterioles and augment the development of an anomalous pattern of collaterals in young Wistar rats. PMID- 3842040 TI - Histological analysis of limb regeneration in postmetamorphic adult Ambystoma. AB - Previous investigation into the regenerative ability of postmetamorphic adult land phase Ambystoma has revealed that these species have the capacity to completely regenerate a limb, given optimal environmental conditions, and the gross morphological characteristics of limb regeneration in these species compared favorably with the external regeneration morphology of aquatic phase forms. The present study concerns a histological and histochemical examination of the regenerating limb tissues and their respective extracellular and intracellular tissue matrices. Postmetamorphic adult Ambystoma were amputated through the forearm, placed within optimal environmental conditions, and allowed to regenerate. The tissues were harvested at designated intervals after amputation and prepared for light microscopic examination. The limb tissues were assayed histologically for similarities to and differences from previously established regeneration morphologies. It was noted that specific correlations (i.e., apical epidermal cap formation, but outgrowth and elongation, palette formation, and digit formation) existed between regeneration histologies in these species and those previously reported for the aquatic urodeles, newt, axolotl, and larval salamander. By utilizing the histological and histochemical characteristics of the tissue, the regenerate limb was divided into five tissue units: epidermal, blastemal, soft, hard, and neuro/vascular. Based on the unique morphology of their extracellular matrices and respective histochemical staining patterns, four distinct blastemal regions were delineated within the blastemal units: subregenerate epidermal blastema, soft-tissue blastema, hard-tissue blastema, and core blastema. Histochemically, changing patterns of highly sulfated, weakly sulfated, and carboxylated polysaccharides and glycosylated compounds were located within both the extra- and intracellular stump and regenerate tissue matrices during regeneration. In addition, these patterns of intra- and extracellular macromolecular material correlated to previous reports of similar-type compounds assayed during regeneration in aquatic urodeles. With this in mind, the adult land phase Ambystoma can be considered an appropriate model system for studies concerning normal limb regeneration. PMID- 3842041 TI - Reduced number of brain cells in so-called neural overgrowth. AB - Patten described as neural overgrowth a folding of brain tissue into the ventricles in abnormal human embryos. Intubation of chick embryo brains release cerebrospinal fluid pressure resulting in a similar folding. These folded brains have 2.5 times less tissue volume than control embryos of identical stage. This study shows, with total DNA measurements, that brain cell number is 50% less in folded brains (intubated embryos) as compared to control brain of identical staged embryos. PMID- 3842042 TI - Cell differentiation in the retina of the mouse. AB - Cell differentiation in the retina of the mouse during the postnatal period was studied by autoradiography. Animals were injected with 3H-thymidine at ages extending from the day of birth through postnatal day 11. Six weeks later the distribution of labeled nuclei in the cells of the mature neural retina was analyzed to determine when these cells completed their final mitosis prior to differentiating. Central and peripheral zones were analyzed separately. Cell division ceases by 5-6 days in the center of the retina and by 11 days in the periphery. Among cells produced postnatally, 73% differentiate as rods, 20% as bipolar cells, 6% as Muller cells, and 1% as amacrine and ganglion cells. At all stages of embryogenesis, the differentiation of at least three and as many as six distinct types of specialized cells is initiated simultaneously within the ventricular cell population. PMID- 3842043 TI - Variational anatomy of the deep femoral artery. AB - The deep femoral artery is frequently incorporated in vascular reconstructive procedures in the proximal leg. To study the branching variations of this artery, we dissected 100 legs and then classified the anatomical patterns. The deep femoral artery originates a median distance of 4.4 cm from the inguinal ligament. The origin of the lateral circumflex artery varied greatly. When it branched from the deep femoral, the origin of the lateral circumflex was 1.5 cm (median) from the origin of the deep femoral. The medial circumflex artery originated from the deep femoral in 63% of the specimens. It arose separately from the common femoral and more proximally in 26% of the specimens, branching an average of 2.15 cm (median) above the deep femoral origin. Familiarity with these variations is essential to the vascular surgeon and,therefore, we have included diagrams based on our study as a ready reference. PMID- 3842044 TI - Computer-aided reconstructive morphology of the baboon abducens nucleus. AB - Our previous effort at reconstructive morphology included the marriage of the horseradish peroxidase (HRP) neurohistochemical method to a Lucite plate reconstruction technique. Limitations imposed by this combination of methods has led us to develop a computer-based system that utilizes image-processing techniques and the data obtained from HRP-processed serial light microscope sections. Labeled neurons of the baboon abducens nucleus were identified by HRP conjugated to wheat ger agglutinin. Using the resulting serial sections and a unique imaging process involving a pattern recognition algorithm, our computer based system automatically differentiates neuronal from nonneuronal features, delineates the surface boundaries of the neuronal population, and then assembles these serial sections into a solid three-dimensional structure that can be rotated and further analyzed. A computer-generated solid model of this neuronal population has been reconstructed and reproduced in a two-dimensional publishable format. It is anticipated that with further development this system will be able to utilize data from the same specimen to study spatial relations through three dimensional reconstruction, as well as to study the quantitative morphology of a neuronal population. Other computer-aided systems are noted, as are the advantages and shortcomings of the present method. PMID- 3842045 TI - Supplemental clinical dissections for freshman gross anatomy. AB - This paper describes a series of nine short clinically oriented dissection exercises as supplements for freshman gross anatomy courses. These procedures heighten and focus student interest, and they do not extensively lengthen the time required to accomplish the regular dissection assignments. The exercises are: lumbar puncture, anterior approach for shoulder arthroplasty, acromioclavicular dislocation, fenestration of the diaphragm, appendectomy, cholecystectomy, display of the facial nerve as in parotidectomy, posterior approach for hip arthroplasty, and injuries to the knee ligaments and meniscectomy. PMID- 3842046 TI - [Institut Pasteur de Madagascar: Annual report 1984]. PMID- 3842047 TI - [Endemic goiter in school children of Salta Province, Argentina]. AB - The Province of Salta, located in the northwest of Argentina, showed severe endemic goiter-cretinism. The purpose of our work, therefore, was to evaluate the results of the iodized salt prophylaxis measure implemented since 1963. In 1980 1981 the prevalence of goiter was determined in 16,935 school children whose ages ranged from four to 15 years. The urinary iodine/creatinine index was also determined in a subsample of 401 children. Findings revealed that the goiter prevalence in the Province was 16.1%. In 10 Departments of the Province, those with greater socioeconomic development and denser population, the prevalences found were below 10%, limit established as endemic. In the remaining 13 Departments, especially in those less developed--where mountainous regions make their access difficult and hence, their populations consume non-iodized salt obtained from natural salt basins--values exceeded this limit. The average ioduria was 104.0 micrograms I/g Cr, with 4.5% presenting values below 25 micrograms. After 20 years of prophylaxis, endemic goiter has therefore been partially eradicated. It is suggested, however, that consumption of iodized salt and, even the supply of iodized oil in those areas where prevalence is high, be recommended. PMID- 3842048 TI - [A new alternative for estimating recommendations of protein intake in humans. Protein requirements of an adult population fed with a diet based on rice and beans]. AB - This paper proposes a new approach to estimate the protein needs of a population; recommendations are also made on the protein intake of adults fed diets based on rice and beans. For this purpose, the nitrogen balance data previously reported for 40 adult human subjects who had participated in 160 nitrogen balance periods fed diets based on rice and beans, with and without animal protein and/or energy supplementation were used. The proposed method is based on the curvilinear response between nitrogen intake and its nitrogen balance. The second degree equation describing the relationship between nitrogen balance and intake is calculated. Using the mathematical concept of the first and second derivatives, the point of inflexion is obtained, and interpreted as that condition wherein the individual utilizes with maximum efficacy the ingested nitrogen; nitrogen ingestion, which corresponds to that point, is therefore taken as the dietary nitrogen recommendation for the individual. When the values obtained by means of the quadratic equation are compared to those obtained by the traditional linear equation, values were found to be statistically equal (p less than 0.05) for both calculation methods. The recommended protein intake of an adult population fed a diet based on rice and beans was 0.80 and 0.77 g/kg/day for the quadratic approach, and for the conventional method, respectively. When this diet was supplemented with 10% milk protein and with the same energy level, the calculated values were 0.64 and 0.71 g protein/kg/day for both methods, in this same order. The essential amino acid intake and absorption values were also calculated from the protein levels recommended by both methods to be in nitrogen balance, from a diet based on rice and beans. Findings revealed, in all cases, that the intakes of each and all essential amino acids met those levels indicated by FAO/WHO, with the exception of isoleucine and the sulphur-containing amino acids, which apparently limit the quality of the diet. PMID- 3842049 TI - [Anthropometric characteristics of school children graduated from basic and secondary education in the Metropolitan area of Santiago de Chile]. AB - An anthropometric assessment of the nutritional status and growth of students graduating from Basic (8th grade) and Secondary (4th grade) Education was carried out. A group sample of 522 students from the Metropolitan Area of Santiago, Chile, was randomly selected. The same number of students by sex, dependency (public and private schools) from high, medium and low socioeconomic levels (SEL) was chosen. SEL was measured through the Graffar Modified Scale, and the percentage of weight for age (% W/A), height/age (% H/A) and weight/height (% W/H) were evaluated in accordance with the National Center for Health Statistics (NCHS) reference pattern. The % adequacy of head circumference/age (% HC/A) was determined by the Tanner Tables, and the % of upper to lower segment ratio (% US/LS), by the Tables of Muzzo et al. Results revealed that the % of W/A and of H/A were diminished in students of both sexes, while the % of UP/LS, was increased in males of low SEL, from Basic Education; this impact is lost in males graduating from Secondary Education and persists only in the LSE females. No differences in the nutritional status (% W/H) of students according to SEL, were found. Females registered values over 110% of the WHO standard, a finding suggesting a high prevalence of overweight and obesity. We conclude that there is a growth retardation in students graduating from 8th Basic Grade, which persists only in females from 4th grade of Secondary Education. This finding indicates that, in addition to possible environmental factors, other factors, probably of genetic order, also influence the latter. Overweight and obesity, therefore, constitute an important problem that merits measures of preventive nature directed to avoid future consequences. PMID- 3842050 TI - [Relationship between the included levels of coffee pulp and the protein content in rations for monogastric animals]. AB - The purpose of this research was to determine the effect of including fresh and ensilaged coffee pulp in rations for monogastric animals, and find the best protein and coffee pulp levels in rations for rats. Fresh coffee pulp and pulp ensilaged for 12 months were used; both kinds of pulp were sun-dried before incorporating them into the rations. The chemical analyses of the pulps revealed a lower content in caffeine, tannins, chlorogenic acid and caffeic acid in the ensilaged pulp than in fresh coffee pulp. Thirty-two experimental rations were prepared, 16 with fresh coffee pulp and 16 with the ensilaged by-product, distributed into four different protein levels (10, 15, 20 and 25%), and three levels of pulp (15, 30 and 45%) for each protein level. The rations thus prepared were fed to Wistar albino rats for a six-week period. The parameters used to measure the effect of the two types of pulp were mortality rate, food consumption, weight gain, food conversion and apparent digestibility of the rations. Ensilaged pulp had a higher nutritive value, lower toxicity and better digestibility than fresh pulp. The increase in the protein level of the ration resulted in partial protection against the negative effects of coffee pulp on the performance of animals, since this improved as the protein level of the ration increased. PMID- 3842051 TI - Development of a compressed product made with sardine. AB - The per capita consumption of marine products is very low in Mexico, averaging less than 4 g/day. This fact has been partially attributed to the costly techniques used in their preservation, which result in high market prices unaffordable for large segments of the population. Previous research lead to the development of pressed and salted patties based on lean fish species, the low cost and easy preservation of which would contribute to a higher fish consumption among the low socio-economic strata of the Mexican population. The present work was directed to adapt the procedure to sardine, which is more abundant and less expensive than lean fish species. Since defatting the sardine lead to poor sensorial characteristics of the patties, measures were taken to protect the fat from oxidation, through the use of BHT and citric acid. The best results were obtained with descaled sardine, and with the addition of 8% NaCl, 10% corn flour and a condiment mixture. The resulting product had 32% of high-quality protein and a shelf life of at least six months under environmental conditions. Its cost per gram of protein was one-third lower than the price of fresh or canned sardine. Sensorial tests revealed an acceptability of 82%. PMID- 3842052 TI - [Microbiological quality of home-made cheese produced in Costa Rica]. AB - The microbiological quality of 205 samples of home-made cheese prepared from raw milk in six rural zones of Costa Rica was studied. In addition to determining their microbiological quality, recommendations are also issued for reducing to a minimum, the deficient sanitary conditions under which they are produced. Collection of samples was done directly at the producing farms. The following microbiological analyses were then undertaken: Staphylococcus aureus, thermonuclease (TNase) positive. Determination of most probable number (MPN) of coliform organisms of fecal origin. Total count of molds and yeasts, and Enumeration of mesophilic aerobic bacteria. As the data revealed, all samples contained high counts of the four microorganisms investigated, therefore demonstrating the deficient microbiological quality of the home-made cheese. On the basis of results obtained, a series of practical recommendations are suggested to improve the poor sanitary conditions under which they are now prepared. PMID- 3842053 TI - [Biochemical and nutritional studies of germinated soybean seeds]. AB - The purpose of this work was to determine the biochemical and nutritional changes of soybean seeds during germination. Soybean seeds were soaked for a period of eight hours and then germinated for 0, 1, 3 and 5 days. Part of them was subjected to an autoclave process. Then, both the raw and cooked seeds were dried, ground and analyzed. During the germination process an increase in the percentage content of protein and fiber in the seeds occurred; cooked seeds, in contrast, showed a slight decrease with respect to the former. Ether extract increased in percentage until the third day, and then decreased on the fifth. In the cooked seeds, higher values than in the raw seeds were obtained, due to the fact that when seeds were autoclaved, protein and carbohydrate losses occur. In regard to ash content, this diminished in percentage as germination advanced; the same happened to the free-protein extract. The raffinose and stachyose sugars, factors which cause flatulence, disappeared on the third germination day. As to nitrogen extraction, a greater percentage was obtained using distilled water as solvent, both for the raw and cooked seeds, than when using NaOH and NaCl. The trypsin inhibitors content increased on the first day of germination and then decreased. Ungerminated, autoclaved seeds, showed no trypsin inhibitors activity, whereas in the germinated cooked seeds, it increased slightly as germination days went by. Regarding protein efficiency ratio (PER), seeds with 0, 1 and 3 germination days presented no significant differences among them, the cooked seeds exhibiting higher values than the raw seeds. Apparent digestibility increased as the germination period advanced, having obtained better values when they were autoclaved. In the soybean milk acceptability test, no significant differences were observed between milk from ungerminated soybean seeds, and milk from the 3-day germinated seeds. PMID- 3842054 TI - [Extraction and quantification of polyphenols from coffee pulp]. AB - The polyphenol content of coffee pulp extracts was determined using the Folin Ciocalteau method. The use of polyvynilpirrolidone (PVP) was introduced in order to eliminate interferences. Condensed polyphenols in the extracts were determined by the method of acidified vanillin. Chlorogenic acid and catechin were used as standards for Folin-Ciocalteau and Vanillin methods, respectively, and a calibration curve was constructed for each solvent. The solvents used were methanol, methanol-water (50:50), ammonium hydroxide (3%) and calcium hydroxide (1%), using times of extraction of 10 minutes and 1 hour. No differences were found in the amount of polyphenols extracted by the different solvents at the two extraction times. After 10 minutes, the alkaline solvents NH4OH (3%) and Ca(OH)2 (1%), extracted more polyphenols than the other two solvents. Nevertheless, ammonium hydroxide (3%) was more efficient in extracting condensed polyphenols. The results herein presented suggest that treating coffee pulp with mild alkaline solvents may improve its nutritive value. PMID- 3842055 TI - Studies on the development of infant foods from plant protein sources. Part II. Effect of processing conditions on the chemical and nutritive properties of chickpea (Cicer arietinum). AB - In order to improve the taste, flavor and nutritional quality of chickpea (Cicer arietinum), various processing conditions were studied. The decorticated samples were processed under various conditions, either by presoaking or non-soaking in water or sodium carbonate solution. The proteins were also isolated from water or carbonate-presoaked chickpea and subjected to various processing. Carbonate presoaked samples gave slightly lower protein and ash values. No major changes in other constituents were observed. Subjective analysis of the intensity of characteristic chickpea flavor in processed samples was carried out, indicating some improvement in the carbonate-presoaked samples. Carbonate-treated samples exhibited a lighter color. The carbonate presoaking procedure had no adverse effect on the availability of lysine and nitrogen solubility index (NSI), as compared to the water-presoaking procedure. The time required to inactivate trypsin inhibitors in carbonate-presoaked chickpea at boiling temperature, was half that required in the case of water-presoaked ones. Under the conditions used in treating chickpea with sodium carbonate, no beneficial effect was observed in reducing the tannin content. No significant differences were observed in net protein ratio (NPR) among the various processed chickpea samples, even though in some cases isolated protein gave significantly lower NPR values. Digestibility values were higher for isolated protein than for whole chickpea samples. PMID- 3842056 TI - [Protein concentrate of African oil palm (Elaesis guineensis, Jacquin), extraction process and functional properties]. AB - A study was carried out for the purpose of obtaining and characterizing a protein concentrate obtained from defatted oil palm cake using alkaline extraction, and compare it with a commercial soy meal. The oil palm cake came from a national industry as a subproduct of the oil extraction of the palm kernels. The moisture, protein, fat, crude fiber and ash content of the oil palm was then determined. The optimum conditions for extraction and precipitation of the proteins were selected. These were the following: extraction at pH, 11.4; adding NaOH 0.06 M solvent; a meal/solvent relation of 1:20 g/ml and extraction time, 20 minutes with magnetic agitation, and precipitation at pH 5.3. The protein concentrate obtained contained: 66.50% protein; 0.07% fat, 0.90% crude fiber, and 3.20% ashes. Then the following functional properties were analyzed: solubility, according to the pH; water absorption (250); oil absorption (175); emulsion activity (27.2), and stability (13.6). The author concludes that the protein concentrate has good water and oil absorption when compared to soymeal; the emulsion, however, was found to be unstable to heat. PMID- 3842057 TI - Industrial corn flour enrichment with whole amaranth flour and milling fractions in corn-based products. AB - Whole flour and milling fractions of raw amaranth seeds were used in 90:10, 80:20 and 50:50 mixtures with industrialized corn flour (MINSA) to prepare tortillas and arepas, basic nutritional foods in several Latin American countries. The three corn-amaranth mixtures showed a good protein and fat content as well as amino acid profile, and presented adequate physical characteristics for making tortillas. Amaranth whole flour and commercial corn flour mixtures in the proportion of 80:20 and 50:50 were found suitable for the preparation of arepas. Protein and fat content were substantially improved, with no changes in organoleptic characteristics. The Mexican type of Amaranthus cruentus, selected due to its availability and bromatologic properties, yielded products of excellent nutritional quality, according to their amino acid content and protein efficiency ratio (PER). The protein-rich (1R) and starchy (2-R) fractions obtained by air classification, also yielded good results when substituting amaranth flour. The afore-mentioned flours and air-classified fractions of the 50:50 mixtures proved to be adequate in gruel preparations when used in 1:8 and 1:12 dilutions, as they improved their organoleptic characteristics. Flakes and extrudates were also used, yielding products with a 13.3-15% protein content, 1.7 3.7% fat, and 65.2-74.2% carbohydrates. In addition, extrudates were utilized to prepare snacks of better nutritional quality than existing similar commercial products. Improvement of the tortilla's mineral and fatty acid contents was achieved in every case. Enrichment of this product with whole amaranth flour is, therefore, recommendable for use in programs aimed at improving the nutritional status of the population. PMID- 3842058 TI - [Comparative evaluation of the protective effect of broxaterol and salbutamol in bronchial spasm induced with an ultrasonic aerosol of distilled water]. PMID- 3842059 TI - [Mezlocillin in the therapy of patients with chronic bronchitis]. PMID- 3842061 TI - [Ventilatory function of the lungs and anthropometric characteristics]. PMID- 3842060 TI - [Interference of digoxin-like immunoreactive substance in the analysis of digoxin in pulmonary pathology: preliminary results]. PMID- 3842062 TI - [Subjective symptoms and blood pressure values in workers in knit-fabric textile mills]. PMID- 3842063 TI - Biochemical and enzymological changes in liver and kidney of Clarias batrachus following lithium intoxication. PMID- 3842064 TI - [Working conditions and the health care of workers in a foundry]. PMID- 3842066 TI - [Medical and technologic aspects of the manifestation of silicosis in workers in the Prvomajska Foundry, Zagreb]. PMID- 3842065 TI - [Morbidity in foundry workers in Slavonska Pozega]. PMID- 3842067 TI - [Respiratory tract diseases and pneumoconiosis in smelters in the Duro Dakovic Foundry in Slavonski Brod]. PMID- 3842068 TI - [Working conditions and the health status of workers in the Konjscina Foundry in Zagreb]. PMID- 3842069 TI - [Occupational diseases of workers in the foundry and metal works plant in Varazdin]. PMID- 3842070 TI - [Health disorders in cleaners of iron casting molds]. PMID- 3842071 TI - Cardiac amyloidosis: five cases diagnosed by endomyocardial biopsy. AB - Between October 1974 and December 1985, 350 patients have been subjected to endomyocardial biopsy (EMB). Five of these subjects clinically presented restrictive cardiomyopathy symptoms. EMB revealed diffuse cardiac amyloidosis. Light-electron-microscopic and morphometric data have been reported. The role of EMB in the diagnosis of cardiac disease is also emphasized. PMID- 3842072 TI - Pure granulosa cell tumour of the testis. Report of a case and review of the literature. AB - A case of pure granulosa cell tumour of the testis is described. To the author's knowledge this is the 5th documented case reported in the literature. The patient, a normal 44-year-old male noted a gradual right-sided testicular enlargement for a few months. There was no clinical evidence of gynaecomastia or any endocrinological abnormalities. Orchidectomy was performed and the testis was found to contain a soft yellow, well-circumscribed tumour which microscopically showed the typical appearance of a pure granulosa cell tumour. The patient was well and disease free 3 years after diagnosis. The literature concerning this entity is reviewed and discussed. PMID- 3842073 TI - Ectopic seminiferous tubules in the tunica albuginea of normal and dysgenetic testes. AB - The histological study of testes obtained from 453 autopsies and 245 biopsies revealed seminiferous tubules in the testicular tunica albuginea of 9 children. Affectation was always unilateral. Three of these testes were associated with mullerian structures and were dysgenetic, showing a thin, insufficiently collagenized tunica albuginea, similar to the ovarian stroma. The other 6 testes corresponded to: 4 normal children, 1 child with idiopathic male pseudohermaphroditism without Mullerian structures, and another with unilateral inguinal cryptorchidism. In these 6 testes the tunica albuginea was histologically normal. These results suggest that the presence of seminiferous tubules in the tunica albuginea is not sufficient to diagnose testicular dysgenesis. Such a diagnosis may only be indicated if the tunica albuginea also exhibits the other characteristic features of dysgenetic testes. PMID- 3842074 TI - Metachronous seminoma of the pineal region and right testis. Case report. AB - The case history of a 23-year-old patient suffering from germinoma of the pineal region, who later developed a seminoma of the right testis, is reported. The possibility that the testicular tumor was a metastasis from the pineal neoplasia appears unlikely. The question of whether the pineal germinoma represented a metastasis from an occult testicular seminoma or an autochthonous tumor is discussed. The latter hypothesis is considered the most likely. The present report appears to support the multiple primary origin of, at least some, germ cell tumors. PMID- 3842075 TI - Testicular torsion: simple grading for histological evaluation of tissue damage. AB - Histological investigation of 63 biopsies taken during surgical detorsion of twisted testes reveals 3 morphologically different degrees of damage. In grade 1 injury the testicular parenchyma shows edema of interstice, slight blood extravasation and a desquamation of the germ cells. The grade 2 injury is characterized by a diffuse hemorrhagic saturation of the interstice and partial necrosis of germ cells. The grade 3 injury corresponds to a fully developed hemorrhagic infarction of the testis. The biopsies taken within the first 4 h after onset of symptoms show a relatively high number of minor changes (grade 1) which hold out hope for restitutio ad integrum. Grade 2 injury predominates in the period between 4 and 8 h, but it can appear also in the first 4 h. Only after 24 h all the testes examined are completely necrotic. This study shows that the amount of time that elapses between onset of symptoms and surgical detorsion is not the only factor to predict the outcome of the injured testis. PMID- 3842076 TI - Lipomatous lesions of the thyroid gland: a review. AB - Described are rare thyroid lesions which either contain mature adipocytes or consist of lipid-rich follicle cells. Of the former, diffuse lipomatosis and adenolipoma of the thyroid are most likely to be derived from heterotopic islands of fat cells included in the gland during embryogenesis. On the other hand, metaplastic origin of fat cells from stromal fibroblasts due to chronic tissue hypoxia is presumed responsible for the presence of fatty tissue in amyloid goiters. Massive steatosis of follicle cells, as seen in the lipid-rich variant of clear cell thyroid adenomas and carcinomas, is, however, claimed to most likely result from metaplastic transformation of neoplastic thyrocytes. Pathomorphological and clinical features of the aforementioned lesions are discussed. PMID- 3842077 TI - Histogenesis of anaplastic carcinomas of the thyroid, giant cell variety: immunocytochemical investigation. AB - The histogenetic and differentiation characteristics of 14 cases of anaplastic carcinoma of the thyroid, giant cell variety were investigated on the basis of immunocytochemical reactivity with 5 cell markers: thyroglobulin, lactoferrin, carcinoembryonic antigen, calcitonin and chromogranin. The first 2 markers were found to be present in isolated neoplastic cells. Only 1 case was strongly and specifically positive for C cell markers and therefore interpreted as a medullary variety of anaplastic thyroid carcinoma. The patient is still alive 8 years after thyroidectomy. All the other patients died of a tumor a few months after the operation. It is suggested that while most cases of anaplastic thyroid carcinomas are probably of follicular origin, the medullary variety constitutes a rare subgroup of a separate histogenetic and prognostic significance. PMID- 3842079 TI - Workshop on early diagnosis in Alzheimer's disease. November 6-7, 1985. PMID- 3842078 TI - Sacrococcygeal chordoma: histochemical findings. AB - Two cases of chordoma of the sacrococcygeal region have been histochemically evaluated. In both cases an irregularly shaped stellate cell, containing large amounts of glycogen, is the prevailing cell type. Neoplastic cells interact with an extracellular matrix consisting of a collagenous framework and a heterogeneous family of glycosaminoglycans with a prevalence of chondroitin sulfate chains and, to a smaller extent, of hyaluronate molecules. We emphasize the value of these data in order to differentiate this tumor from other sacrococcygeal neoplastic lesions. PMID- 3842080 TI - Some problems associated with neuropsychological assessment. PMID- 3842082 TI - Abstracts of the twenty-second annual meeting of the Federation of Western Societies of Neurological Sciences. February 21-24, 1985, San Diego, California. PMID- 3842081 TI - Stroke associated with glioblastoma. AB - Several months after onset of typical stroke syndromes, two patients were found to harbor a glioblastoma multiforme in the area of infarction. Arteriographic and late CT studies suggested that one neoplasm caused parenchymal compressive occlusion of a sylvian branch mimicking embolism and the other entwined the origin of the middle cerebral artery in the leptomeninges simulating atherothrombosis. PMID- 3842083 TI - The electroencephalogram in Alzheimer disease. PMID- 3842084 TI - Brain biopsy in Alzheimer's disease: surgical technique and indications. PMID- 3842085 TI - Cerebral biopsy in the study of Alzheimer's disease. PMID- 3842086 TI - Differentiating depression from Alzheimer's disease. PMID- 3842087 TI - Vision: a multimodal sense. AB - There is growing evidence for parallel processing of visual information. Visual information, spatially or temporally distinct, is transmitted to various regions of the brain. This paper presents clinical and anatomical evidence for parallel processing in the human visual system. The neuro-ophthalmologist often has psychophysical evidence for the separation of visual functions. Our own investigations have demonstrated that brightness sense and other visual functions may be impaired out of proportion to visual acuity in diseases of the optic nerve. Classes of retinal ganglion cells have been morphologically and physiologically described in several experimental animals. No such classification of retinal ganglion cell types has been made in man. However, psychophysical and retinal electrophysiological human studies suggest the segregation of human retinal ganglion cells into classes which subserve different functions. A new staining method (PPD) has made it possible to directly study the visual pathways in man. With this method, we have documented several previously undescribed human visual pathways to different brain visual nuclei: the lateral geniculate nucleus, the pretectum, the superior colliculus, the pulvinar, and three nuclei of the hypothalamus (SCN, PVN, SON). We have also developed a method which permits the accurate and rapid measurement of human retinal ganglion cell axon diameters through the optic nerve and through the fascicles of optic fibers entering several of these recently described visual nuclei. There is evidence for three size classes of axons which differentially distribute to the visual nuclei. These studies emphasize the need for overcoming the constraints of thinking that vision is the same as seeing.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842088 TI - A new model of focal cerebral ischemia: validation and utility. PMID- 3842089 TI - Heterogeneity and prognosis in dementia of the Alzheimer type. PMID- 3842090 TI - Cysticercosis--review of 230 patients. AB - Two hundred thirty patients with cysticercosis were reviewed. Investigation with CT scan has led to a more detailed understanding of the natural history of human infestation which is essential to the evaluation of new pharmacological and neurosurgical treatments. In contrast to reports emphasizing the need to extirpate all intraventricular cysts, many of our patients needed only ventricular shunt implantation. The ability to evaluate and reevaluate hydrocephalus by CT scan permitted comfortable use of ventricular shunt insertion as the only treatment. Nevertheless, cysts in the fourth ventricle should nearly always be extirpated, because these cysts, by their mass effect, may cause herniation even after shunt implantation. Serious morbidity and death occur chiefly in patients who develop hydrocephalus from intraventricular and basilar infestation. It is unlikely that praziquantel will be effective in patients who present with symptoms of hydrocephalus. PMID- 3842091 TI - Stable isotopes in clinical research. PMID- 3842092 TI - Left ventricular volume response to exercise in normal and coronary artery disease patients. AB - The left ventricular (LV) volume response to supine exercise (EX) was studied in 15 normal volunteers (mean age 44, asymptomatic, with normal resting ECG and treadmill stress test) and 28 coronary artery disease patients (CAD, documented by cardiac catheterization) with no previous myocardial infarction. Each individual underwent stress gated equilibrium radionuclide angiography (RNA) and was on no medication. A nongeometric count based LV volume programme developed in our laboratory (correlation to biplane cineangiography R = .98), was used to calculate end diastolic volume index (EDI), end systolic volume index (ESI), stroke volume index (SVI), cardiac index (CI), and ejection fraction (EF). In normal individuals, end diastolic volume did not change from rest to exercise, while end systolic volume decreased by an average of 16%. In the patients with coronary artery disease, however, both end diastolic volume and end systolic volume increased (14% and 15% respectively). Furthermore, our preliminary data suggest that the extent of the changes may be dependent upon the extent of the underlying CAD. While all the CAD patients had an increase in their end diastolic volumes, there was no change in the end systolic volume in those with single vessel disease, an 11% increase in patients with double vessel disease and a 19% in patients with triple vessel disease. PMID- 3842093 TI - Electrophysiologic effects of intravenous diltiazem in patients with recurrent supraventricular tachycardias. AB - The electrophysiologic effects of intravenous diltiazem were evaluated in 10 patients with recurrent supraventricular tachycardias. The tachycardia incorporated an accessory pathway in 7 patients and was due to AV nodal reentry in 3 patients. Diltiazem 0.25 mg/kg was administered intravenously over 5 minutes during sustained supraventricular tachycardia. Programmed electrical stimulation was used to restore sinus rhythm if diltiazem failed to terminate the arrhythmia within 10 minutes. Conduction intervals, refractory periods and tachycardia characteristics were evaluated before and immediately after drug administration. Diltiazem did not significantly modify sinus cycle length, AH and HV intervals. Atrial and ventricular effective refractory periods were similar before and after diltiazem. The effective refractory period of the AV node was prolonged by 42 msec after diltiazem (p less than 0.05). Diltiazem increased the tachycardia cycle length from 320 +/- 41 to 353 +/- 36 msec (p less than 0.01) but terminated the arrhythmia in only 2 patients. After diltiazem, supraventricular tachycardia could not be reinitiated in only 2 patients and the tachycardia initiating window was not significantly reduced (56 +/- 26 to 41 +/- 33 msec). The infusion of diltiazem was accomplished without side effects. Thus, 0.25 mg/kg of intravenous diltiazem produces a modest depression of AV nodal function and is not very effective in terminating supraventricular tachycardia or preventing its initiation in this study population. Further studies using higher doses of intravenous diltiazem would be useful to determine its maximal therapeutic benefit in patients with recurrent supraventricular tachycardias. PMID- 3842094 TI - Spontaneous resolution of severe right ventricular dysfunction in right ventricular infarction: documentation by radionuclide studies. AB - A case of inferior myocardial infarction complicated by severe arrhythmias and right heart failure is presented. Radionuclide studies performed near the acute phase and one month later illustrate the reversibility of right heart dysfunction caused by infarction. Signs of right ventricular involvement in acute inferior myocardial infarction are noted in about 40% of cardiac blood-pool studies: right ventricular dilatation with a significantly decreased ejection fraction, and ventricular wall motion abnormalities. Follow-up studies in the recovery period show good recovery of right ventricular function. PMID- 3842095 TI - Influence of temperature and rate on the effectiveness of nifedipine in isolated rat heart preparations. AB - The negative inotropic effect of nifedipine (0.1-2.5 mg/l) was studied on isolated atria at different temperatures (36 degrees, 29 degrees, 22 degrees C) and frequencies of stimulation (20, 60, 180/min). The effect on peak force and dF/dt increased with dose, frequency and cooling from 36 degrees to 29 degrees. Rate of contraction was affected slightly more than rate of relaxation. The effect on time to peak was small, dose and frequency independent but potentiated by lowering the temperature. An analysis of mechanical transients showed that at 22 degrees C and 180/min stimulation the effect of nifedipine gradually diminished and only slowly reappeared upon transition to 20/min stimulation. In spontaneously beating perfused hearts the effects of nifedipine (0.5 mg/l) in general did not differ significantly at 36 degrees and 23 degrees C. The heart rate was reduced and atrioventricular conduction prolonged. At constant heart rate, nifedipine considerably depressed contractions, shortened the action potential duration and reduced the height of plateau. These effects of nifedipine are similar to those of verapamil in other animal species and the results support the idea that calcium antagonists might have secondary intracellular effects apart from direct consequences of slow current inhibition. PMID- 3842096 TI - Diltiazem reduced infarct size but not ventricular arrhythmias in 48 hour coronary embolized dogs. AB - The calcium antagonist, diltiazem, was examined for its ability to limit infarct size and to diminish the severity and frequency of the ventricular arrhythmias in closed chest dogs following coronary occlusion. Diltiazem was administered 100 micrograms/kg as a bolus, followed by 15 micrograms/kg/min infusion for 48 h, starting 10 min after coronary occlusion (11 dogs). The control groups (9 dogs) received an equal volume of saline. Risk area and regional myocardial blood flow was measured with radioactive microspheres 5 min after coronary embolization. Forty-eight hours after embolization, the dogs were sacrificed, the hearts sectioned into 4 mm slices and the slices were stained with triphenyl tetrazolium chloride to measure the infarct size. Risk size was determined by autoradiography of the microspheres. Infarct size, expressed as a percentage of the area at risk, was significantly lower in the diltiazem treated group than in the control group (47.4 +/- 8.9 vs. 76.1 +/- 6.4%). However, the severity and frequency of the ventricular arrhythmias for the first 24 h was not any different between two groups. PMID- 3842097 TI - Primary cutaneous amyloidosis in Sri Lanka. PMID- 3842098 TI - Incontinentia pigmenti in Sri Lanka. PMID- 3842099 TI - Gluten sensitive enteropathy in a patient with dermatitis herpetiformis. PMID- 3842100 TI - Kawasaki disease in Sri Lanka. PMID- 3842101 TI - Treatment of chromomycosis with a combination of ketoconazole and 5 fluorocytosine. PMID- 3842102 TI - Some indigenous beliefs and practices connected with cutaneous disorders. PMID- 3842103 TI - Aluminum: a clinical problem in nephrology. A one day symposium, December 1983, Antwerp, Belgium. PMID- 3842104 TI - What is the value of plasma/serum aluminum in patients with chronic renal failure? AB - In a region with a relatively low incidence of aluminum toxicity water, dialysis fluid and plasma aluminum were monitored in hemodialysis patients before and after the introduction of reverse osmosis (RO) water. Before the use of RO water, there was a close correlation between plasma and dialysis fluid aluminum with exposure to aluminum being reflected equally by either water, dialysis fluid or plasma aluminum. Patients with clinical manifestations of aluminum toxicity were characterised by a plasma aluminum consistently greater than mumol/l and a dialysis fluid aluminum consistently greater than 1 mumol/l. No evidence of clinical toxicity was found in patients in whom the plasma aluminum was maintained up to 5 mumol/l. Following the introduction of RO water, the dialysis fluid aluminum was able to be maintained less than 1 mumol/l, the plasma aluminum fell and no new cases of clinical toxicity were identified over the following five years. An effect of aluminum hydroxide dosage on plasma aluminum could be identified only in patients in whom the dialysis fluid aluminum was less than 1 mumol/l. Plasma aluminum was found to be a poor guide to bone stores but appeared to correlate better with the presence of bone toxicity than total bone aluminum. Regular monitoring of dialysis fluid and plasma aluminum is recommended as a means of detecting exposure to aluminum as well as the source of exposure and as a guide to the risk of clinical toxicity. PMID- 3842105 TI - Toxicological aspects of aluminum poisoning in clinical nephrology. AB - Several dialysis-related diseases can be ascribed to an increased body burden of aluminum (Al). Determination of this metal in clinical samples is of great assistance in the diagnosis, treatment and prevention of Al intoxication. As there are many pitfalls in the estimation of Al in biological fluids, the performance of these assays should be restricted to laboratories specializing in the human toxicology of metals, which are experienced in flameless atomic absorption spectrophotometry and which participate in an external quality assessment scheme. One laboratory can serve ten dialysis centers. Serum, plasma or blood are equivalent samples for the biological monitoring of Al. The assay should be performed once in a three month period, but when oral Al-containing medication is changed, toxic symptoms are suspected, or levels exceeding 100 micrograms/l are observed, Al should be determined much more frequently, e.g., once weekly. A high incidence of symptoms associated with Al poisoning is seen in patients with serum concentrations (AlS) greater than 100 micrograms/l, and it is therefore recommended to keep AlS well below this level. Scalp hair appears to be of no use for the assessment of the body burden of Al in the individual patient. For "environmental monitoring", regular analysis of the dialysis fluid is necessary. The concentration of Al in this fluid should not exceed 5 micrograms/l; higher levels lead to a positive Al balance during dialysis and may eventually result in poisoning. PMID- 3842106 TI - Desferrioxamine in the treatment of aluminum overload. AB - Aluminum removal is essential in treating patients with aluminum accumulation. Currently the most effective method is chelation of aluminum with desferrioxamine (DFO). DFO administration has been shown to improve dialysis encephalopathy and dialysis bone disease. The optimum dose of DFO and the mode of administration have yet to be determined. Commonly between 40 and 80 mg/kg is given parenterally once weekly. The very high serum aluminum concentrations which develop do not appear to be toxic. The administration of small doses of DFO with each dialysis may also be advocated. Monitoring of serum aluminum levels and of iron status is advisable during DFO treatment. DFO may also play a role in evaluating tissue aluminum accumulation. PMID- 3842107 TI - Aluminum-free oral phosphate binder. AB - For the purpose of intestinal phosphate binding we have developed aluminum free substances. These substances are natural polymers consisting of heteropolyuronic acid charged with different cations. The in vitro experiments showed an efficacy 2 to 3 times greater than Aludrox. During the clinical application, up to one year, no serious side effects have been detected. Serum phosphate levels could not be lowered in all patients to the desired level of 5 mg% mainly due to problems in patients compliance and to low dosage of the prescribed phosphate binder. PMID- 3842108 TI - Therapeutic drug monitoring. PMID- 3842109 TI - The role of the clinical pharmacist. PMID- 3842110 TI - Selection of methods for therapeutic drug monitoring. PMID- 3842111 TI - Organisation of a therapeutic drug monitoring service. PMID- 3842112 TI - Quality control of therapeutic drug assays. PMID- 3842113 TI - WHO's vaccine development programme. AB - The World Health Organization is playing a major international role in encouraging, coordinating, and where appropriate commissioning, research and development activities relevant to the control of high priority infectious diseases. The Expanded Programme on Immunization would be the vehicle for the introduction of new or improved vaccines. In many parts of the developing world the health infrastructure is strained to breaking point by the heavy load of disease. It has failed to make the best use of the already available technology. Immunization provides the simplest, least expensive and most effective intervention technology. Every effort is therefore needed to extend immunization coverage and lighten the burden on the health infrastructure and accelerate the overall development of the vast rural and peri-urban communities in the developing world. WHO has, on the one hand, to call on the most eminent scientists to give effective and simple interventions, and on the other, on the politicians, social leaders, economic managers, medical profession and all public health workers to build up the infrastructure to put intervention technologies into action. PMID- 3842114 TI - Fusarium moniliforme, a new mycetoma agent. Restudy of a European case. AB - Fusarium moniliforme was demonstrated to be the etiologic agent in an Italian case of eumycotic mycetoma. The fungus produced white granules, which measured 80 X 133 by 212 X 478 microns. Their edges were entire or lobed and were surrounded by an eosinophilic homogeneous material. The hyphae comprising the granules were not embedded in cement. The etiologic agent, first considered to be an Acremonium species, was restudied and identified as F. moniliforme on the basis that it not only produced chains of microconidia but also curved, multi-septate macroconidia typical of the genus Fusarium. PMID- 3842115 TI - Multiple logistic function versus Mantel-Haenszel procedure in the analysis of risk factors for prevalence of hepatitis A antibodies. AB - Multiple logistic function and Mantel-Haenszel procedure are compared in their ability to control confounding in a large set of data. In this specific application substantial equivalence is found between the two techniques. When both techniques are applicable and data are not sparse, the authors prefer stratification, which is simpler and free of assumptions. PMID- 3842116 TI - Imported paracoccidioidomycosis: a public health problem in non-endemic areas. AB - Diagnosis of paracoccidioidomycosis in an immigrant who had returned to Italy following a long sojourn in Venezuela prompted a review of imported cases of this Latin American disease in nonendemic countries. Forty-two such instances of well documented paracoccidioidomycosis were complied. Among these, eleven individuals had arrived in nonendemic countries with active symptomatic infections, fifteen others were first suspected of having tuberculosis, and four each were considered to have blastomycosis caused by Blastomyces dermatitidis and carcinomas. Three individuals were considered to have Wegener's granulomatosis or blastomycosis. Two other patients were treated for syphilis before being diagnosed as having paracoccidioidomycosis. A striking feature of most of these cases was the long asymptomatic period following initial infection. The dormant periods ranged form four months to 60 years with an average duration of 14 years. The need to question patients about travel to or residency in foreign countries is emphasized, along with the necessity to include the mycoses in differential diagnoses. Three reported cases, all from Africa with no history of travel to the endemic areas of the New World, were considered to be doubtful. In one of these, Russell bodies apparently had been mistaken for the tissue-form cells of Paracoccidioides brasiliensis.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842117 TI - Methodological considerations of epidemiological diagnoses in respiratory diseases. AB - Since epidemiological research depends extensively on questionnaire responses, a comparison of such responses with a standardized medical evaluation was conducted. It was found that standardized questionnaires do well in comparison for certain kinds of information on chronic conditions. However, clinical evaluations will elicit more information, specifically of a milder nature. It was concluded that standardized epidemiological questionnaires are satisfactory for survey of chronic conditions. PMID- 3842118 TI - A family outbreak of tularemia. AB - A family cluster of tularemia is described. In a family of three members different clinical type of the disease occurred after having been exposed to a sick wild hare. From the hare kidney Francisella tularensis type 1 was isolated. Pneumonic, typhoid-like tularemia occurred in the father who inhaled hare skin hairs and an ulceroglandular form in the mother and in the child who had direct contact with the animal. PMID- 3842119 TI - Mortality from cancer of the stomach, colon and rectum in the city of Naples and the provinces of Campania. AB - Utilizing data on deaths from 1951 to 1981, this study attempts to verify a time trend for stomach, colon and rectum cancer in the city of Naples. Time trend analysis and cohort analysis have shown an increase of colon rectum cancer mortality affecting cohorts born after 1871 and a decrease of stomach cancer mortality for those born after 1886. A comparison of mortality rates in three geographical areas shows that, while there is not any difference for stomach cancer, the mortality curves relating to cancer of the colon and rectum are higher in the city of Naples than in the province of Naples and the other provinces of Campania. PMID- 3842120 TI - Risk factors for coronary artery disease in 124 Jerusalem medical students. AB - As part of an epidemiologic teaching exercise, we studied coronary risk factors in two consecutive classes of Jerusalem medical students (n = 124) and calculated a summary coronary risk score for each student. Men were at higher risk than women because of greater body mass, higher blood pressure and more cigarette smoking. Married males were at lower risk than single males because they had lower cholesterol levels and smoked less. Married and single females were at equal risk. Jerusalem students smoked more than most groups of American medical students and less than their European counterparts. There is reason to believe that an exercise of this kind may result in risk-reducing behavior on the part of high-risk students. PMID- 3842121 TI - Non-melanoma skin cancer and solar keratoses in Australia--a review. AB - Non-melanoma skin cancer and solar keratoses are common in Australia due to a combination of recent fashions in a predominantly fair-skinned population in intense sunlight. Between 2-3% of the population aged 40 years and over have at least one non-melanoma skin cancer, and more than 40% of the same population have at least one solar keratosis (the majority having more than one). Squamous cell carcinoma arising on sun-exposed areas has a significant rate of metastasis. The clinical diagnosis of these tumors is often inaccurate, and biopsy is essential to confirm all diagnoses of not only squamous cell carcinoma, but also basal cell carcinoma. Public education programmes are necessary to reduce the major public health problem that non-melanoma skin cancer currently presents in Australia. PMID- 3842122 TI - The principles of quality assurance. Report on a WHO meeting. PMID- 3842123 TI - Primary health care in industrialized countries. Report on a WHO meeting. PMID- 3842124 TI - Adjuvant combination immunotherapy (BCG and levamisole) in malignant melanoma. PMID- 3842125 TI - Pineal-thyroid relationship in breast cancer. PMID- 3842126 TI - Follow-up study of adjuvant chemoimmunotherapy in colorectal carcinoma after definitive surgery. PMID- 3842127 TI - Serum enzymes as bio-chemical markers in the diagnosis and prognosis of carcinoma of the cervix uteri. PMID- 3842128 TI - Fluoroscopically guided thin needle aspiration biopsy of deep seated abdominal masses. PMID- 3842129 TI - Diagnostic role of urine cytology and fibrinogen degradation products in carcinoma of bladder. PMID- 3842130 TI - Acinic cell tumour of the bronchus (a case report). PMID- 3842131 TI - Intracranial presentation of renal cell carcinoma (a case report). PMID- 3842132 TI - Mucus producing adenopapillary carcinoma of the parotid gland in an irradiated neck (a case report). PMID- 3842133 TI - Treatment planning for irradiation of breast cancer--comparative study of physical aspects of cobalt vs linear accelerator. PMID- 3842134 TI - Relative frequency of oral cancer in Southern Orissa. PMID- 3842135 TI - The simplified HF E-800 audiometer: calibration and normative aspects. AB - Although numerous viable applications of high frequency (HF) audiometry have been demonstrated in the past 20 yrs, a set of specifications analogous to those for diagnostic pure-tone audiometers (ANSI, 1969) is lacking. Thus, meaningful interpretation of HF thresholds must consider the system employed to assess auditory sensitivity. A cost-effective HF audiometer has recently been described based on the Grason-Stadler E-800 Bekesy audiometer in the fixed-frequency mode. Preliminary results indicate highly acceptable reliability and validity of thresholds. In the present study, 20 men and 65 women, all normally hearing young adults (170 ears) presenting with negative otoaudiologic histories produced HF ac thresholds from 8-20 kc/s. Excursion widths of pen tracings compared favorably with those of earlier reports in HF audiometer studies. The composite function (both sexes, both ears) was flat through 12 kc/s, with progressively greater SPLs required for higher frequencies. Neither gender nor ear-related differences were seen. Calibration was performed using the NBS 9 A 6-cc coupler and the manufacturer's flat-plate coupler for the Koss HV/X stereophone used. Conversion factors were presented so that either coupler could be used. A threshold function was recommended for use consisting of the composite median function for 170 ears. It was concluded that the Simplified HF E-800, or an analogous unit, could be used as a viable clinical tool, surpassing the cost effectiveness of a number of different HF audiometric systems. PMID- 3842136 TI - Suprathreshold Bekesy excursion widths in normal and sensorineural impaired listeners. AB - Normal-hearing (N:20) and sensorineural adults (N:15) performed sweep-frequency Bekesy audiometry from .1-8 kc/s at threshold and at MCL and UCL with both continuous (C) and interrupted (I) tones. Excursion width was measured in 1-db steps. Normals exhibited no C-I differences in excursion width at any level, and differences between the two groups of Ss were negligible for I tones, but the sensorineural Ss yielded significantly smaller widths at 3, 4 and 6 kc/s for C tones at both suprathreshold levels. SInce a number of sensorineural Ss did not yield tracings at UCL, it was recommended that MCL be traced as one feature of site-of-lesion testing. Of the sensorineurals, 75% yielded widths of 5 db or less for C tones at MCL, and this criterion in a sweep-frequency Bekesy is suggested as of clinical value. PMID- 3842137 TI - The relation of chronological age of normal children in kindergarten and grade 1 to their performance on the Test for Auditory Comprehension of Language. AB - For 55 normal-hearing and regularly educated children (Kindergarten and Grade 1) aged 62-81 months, the relationship was determined between chronological age and performance on the test for Auditory Comprehension of Language (TACL). Performance on the TACL related poorly to age (Spearman Rank Correlation coefficient: .35, p less than .02). The implication is that the TACL may not be sensitive to the normal development of auditory comprehension of language within the sharply limited age range examined. The data presented from these 55 entirely normal children may be used as additional norms of TACL for that age range. PMID- 3842138 TI - Speech reception thresholds using conventional vs high-frequency spondees in normals and in subjects with marked high-frequency sensorineural loss. AB - Spondee threshold (ST) estimates were obtained on 20 normal-hearing adults and 15 adults with high-frequency sensorineural hearing losses sloping off above 500 c/s at about 15-20 db/oct. Stimuli consisted of tapes of a woman's voice speaking permuted lists of 9 conventional (broadband) spondees and of 10 high-frequency emphasis spondees developed especially for this research using a discrete frequency analysis. For normals, the correspondence was good between the 3 frequency (.5, 1, 2 kc/s) PTA vs either list. However, for the sensorineural Ss, the mean ST for the conventional spondees was better matched to the 2-frequency PTA (av. of 2 best of .5, 1, 2 kc/s), while the high-frequency-emphasis list STs were better matched to the 3-frequency PTA. It was suggested that high-frequency emphasis STs be used with such sloping losses and that ST-PTA reliability checks for such Ss be comparisons using a +/- 5-db criterion comparing high-frequency emphasis STs with 3-frequency PTA. If conventional STs are collected, they should with such Ss be compared to the individual's 2-frequency PTA. PMID- 3842139 TI - Masking effects on formant frequency structure variability under selected speaking conditions. AB - Normal-speaking adults (3 M, 3F) produced 4 vowels (/a/, /i/, /u/ and /o/) in a carrier phrase under free and disruptive speaking conditions (masking and/or bite block). Formant frequency structure variability was not affected by speaking conditions; however, a difference among vowels was obtained. F1 variability for the vowel /a/ was significantly different from the other 3 vowels as was the vowel /i/ for F2. The results were presented as the volumetric relationships which exist between the anterior and posterior F1 and F2 vocal tract cavities. The analysis of F1 and F2 variability suggests that once the place of vowel articulation exceeds a certain physiological boundary in reference to vocal tract cavity size, performance variability accelerates significantly. PMID- 3842140 TI - Effects of stimulus frequency on vocal suppression in neonates. AB - Three groups, each composed of 15 normal neonates, were exposed to different narrowband stimuli, all at 80 db SPL, representing low frequencies (peak level at 1 kc/s of 75 db, half-power bandwidth of 180 c/s), middle frequencies (peak level at 3 kc/s of 75 db, half-power bandwidth of 300 c/s), and high frequencies (peak level at 6 kc/s of 69 db, half-power bandwidth of 1 kc/s). Each S in each group was tested with the appropriate 4-min control condition for each S where a stimulus was not presented. For each group, Ss cried significantly less during the stimulus than for the control condition. There was a trend for suppression of crying to decrease as stimulus frequency increased (mean suppression of crying during the noise presentations, relative to the crying during the control conditions, were 148.3, 125.2, and 111.5 secs for the frequencies in order), but the differences among the groups were not significant. This suggests that neonates do not hear appreciably better at some frequencies than at others, and also that neonates do not necessarily interact differently with different stimuli because of frequency content. It seems, therefore, that neonates respond on a stimulus-response basis that is proportional in strength to stimulus level and spectral complexity. Loud complex noises are the strongest stimuli because they result in maximum neural excitation. However, narrowband noises can be used to indicate something of the neonate's frequency sensitivity. PMID- 3842141 TI - A functional measure of front-to-back ratio. AB - Monaural hearing aid users (aged 26-75 yrs; mn: 52 yrs) with moderate to severe bilateral sensorineural losses tracked free field sweep-frequency Bekesy thresholds from .25-4 kc/s in a typical audiological test booth. Each S was fitted, on the ear on which S usually wore an aid, with successively 3 directional microphone hearing aids (DMHAs) now commonly issued, with similar frequency response and gain characteristics but with a range, as shown by the manikin KEMAR in an anechoic chamber, of 8 db in FBR. Warbled tones were presented from a loudspeaker either 1 m directly ahead of or 1 m directly behind S's head. The difference in thresholds (180 degrees data subtracted from 0 degree data) in db was taken as functional front-to-back ratio (FBR) at selected frequencies. These were compared with FDRs from KEMAR. The functional FBR was shown to be sensitive enough (p less than .001) to differentiate among DMHAs, and the aids were on the average ordered similarly from highest to lowest by both KEMAR and functional FBRs. It was found that the data at 1 kc/s were predominately useful to test. However, individual differences were such that it was concluded that more reliance should be placed on a functional test of FBR. In addition, a significant Pearson r of 0.42 (p less than .01) was obtained between functional FBR and monosyllabic DS (S/N: 0 db). These results suggest that the functional FBR may play an important role in measuring hearing aid selection. PMID- 3842143 TI - Periosteal stimulation by artificial tension. AB - The role of tension in the formation of exostoses in lathyritic rats was studied by applying artificial tension to the tendon of insertion of the adductor longus muscle. Exostoses were formed in the periosteum at the insertion site in rats fed a 50% Lathyrus odoratus diet, given artificial tension and a normal diet, and given artificial tension and a lathyrus diet. The latter were the largest. It is concluded that tension plays an important role in the formation of lathyritic exostoses and that tension alone can cause exostosis formation in the rat. PMID- 3842144 TI - [Measurement of transmucosal potential difference before and after gastric mucosal injury in dogs]. AB - Three mongrel dogs (12-14 kg BW) were used to measure the transmucosal gastric potential difference (PD) after gastric injury by electric thermocautery under endoscopic control. The parameters obtained after mathematical fitting of the experimental data to the inverse Batemen function reflected the characteristics, surface and depth of the mucosa injury. These results suggest that a calculated gastric response (GR) is appropriate to evaluate the intensity of gastric mucosal injury. PMID- 3842142 TI - Guinea pig bone marrow basophilopoiesis. AB - Basophilopoiesis was produced in guinea pigs with daily injections of sheep blood. Bone marrow preparations from these animals and controls were studied by electron microscopy at frequent intervals during 14 days of injections. We found that the composition of normal bone marrow consisted primarily of neutrophils and their precursors, small lymphocytes, plasma cells, macrophages, red blood cell precursors, megakaryocytes, and myeloblasts. The basophil lineage and blasts of any type were seen infrequently prior to injections. Serial injections of sheep blood produced a marked, early expansion of blasts and young basophilic myelocytes, followed later by the presence of numerous mature basophils. This proliferation was accompanied by a generalized granulocytic proliferation. Megakaryocytes also increased in number and were often surrounded by basophils. An important finding in this model of basophilopoiesis was the marked early expansion of blasts which were not distinguishable morphologically from a proliferation of large lymphoid cells and lymphoblasts. These actively dividing, ribosome-filled cells underwent Golgi expansion and accumulated vesicle containing vacuoles. Later, single and then multiple, typical, immature basophil granules appeared. The presence of these granules allowed classification of these cells as young basophilic myelocytes. The origin of immature granules from the Golgi apparatus was evident. The association of small vesicles in the cytoplasm immediately adjacent to immature granules as well as within these evolving structures suggests a role for these vesicles in the construction of new granules. These in vivo observations of granulogenesis are identical to a much accelerated process we have described in mature basophils as they rebuild granules after degranulation in an in vitro model. Moreover, the presence of multivesicular structures and vesicle-containing immature granules in granulogenesis in in vivo studies of guinea pig basophilic myelocytes has been helpful for the identification of mouse basophilic myelocytes, both in vitro and in vivo. PMID- 3842145 TI - Development of Theileria sergenti in the ovary and eggs of the tick, Haemaphysalis longicornis. PMID- 3842146 TI - Adherence of Moraxella bovis to tissue culture cells. PMID- 3842147 TI - Family health culture, ethnicity, and asthma: coping with illness. PMID- 3842148 TI - Private fears, global loss: a cross-cultural study of the insufficient milk syndrome. PMID- 3842149 TI - Differential use of a clinic by Tarahumara Indians and mestizos in the Mexican Sierra Madre. PMID- 3842150 TI - Implementation of health screening programs using ethnomedical resources. PMID- 3842151 TI - [Sociedad Argentina de Investigacion Clinica. 30th scientific meeting. Mar del Plata, 24-28 November 1985. Abstracts]. PMID- 3842152 TI - [Pharmacology of serotonin and vascular function]. PMID- 3842153 TI - [Programmed atrial stimulation and early limited ergometry after acute myocardial infarction]. PMID- 3842154 TI - [Polymorphic reticulosis and full term pregnancy]. PMID- 3842155 TI - [Use of photosensitizers in cancer diagnosis and therapy]. PMID- 3842156 TI - [Advances in the monitoring of treatment with oral anticoagulants]. PMID- 3842157 TI - Secondary malignancies involving parasellar region: clinical manifestations, diagnosis and management in 16 patients. PMID- 3842158 TI - Criteria for the diagnosis of brain death: report of the committee for investigation of brain death in Osaka University, School of Medicine. PMID- 3842159 TI - Effect of ultraviolet light on disinfection of the operating room. PMID- 3842160 TI - Phonemic analysis, spelling, and reading. PMID- 3842161 TI - A pediatric emergencies training program for emergency medical services. AB - Accidents are the leading cause of death in children, accounting for more pediatric deaths than all other causes combined. Accidents also account for 21.7 million injuries to children that require medical care annually. Despite recognition of this major public health problem, little emphasis is directed toward the pediatric patient in emergency medical services education. In response to this need, Children's Hospital National Medical Center developed a three-day training program in pediatric emergencies for field emergency medical technicians, intermediate paramedics, and paramedics. The course consists of 18 hours of lectures and skill stations focusing on medical emergencies, care of the injured child, the special needs of the infant, and the emotional response of the child and family in an emergency. Test evaluations before and after the course from the 190 participants demonstrate a significant improvement in their knowledge and skills in treating pediatric emergencies (P less than 0.001). PMID- 3842162 TI - Injuries involving household furniture: spectrum and strategies for prevention. AB - We undertook a study to determine the incidence and spectrum of childhood injuries from accidents involving household furniture, using coffee tables as an example. Our review of data from the Consumer Product Safety Commission indicated approximately 250,000 furniture-related injuries in 1982 in the United States, 25 percent of them from coffee tables. Most of the injuries were lacerations of the head and face. In a review of injured children from our emergency department, we found that square or rectangular coffee tables with sharp edges were usually involved. A survey of pediatricians found that only 40 percent offered any advice to parents about hazardous types of household furniture. We conclude that furniture injuries are an important hazard for children and suggest strategies for prevention. PMID- 3842163 TI - Rib fractures in children. AB - We reviewed the charts of 21 children admitted to the hospital with rib fractures to determine the cause of trauma, the relationship of the number and location of rib fractures to other injuries, the course of flail chest in children, and the frequency and characteristics of injuries caused by child abuse. Sixteen (76%) of 21 children were injured by accidental causes, most commonly by motor vehicles. However, five (24%) children were victims of child abuse. Nineteen children fractured an average of 3.5 ribs (range 1 to 8), while two other children fractured 22 and 23 ribs. Neither an increased number of fractures, nor first or second rib fractures were associated with more severe intrathoracic injuries. Two children with flail chest required intubation but recovered without further complications. The five children with nonaccidental rib fractures were young, had an unexplained history, and a paucity of multiple trauma. These characteristics should alert the physician to the possibility of child abuse in the patient with rib fractures. PMID- 3842164 TI - Hyponatremia and seizures presenting in the first two years of life. AB - During a three-month period, 15 patients under two years of age presented with serum sodium concentrations less than 127 mEq/L. Seven (47%) of these patients presented with seizures. Hyponatremia accounted for a majority (58%) of the afebrile seizures in children under two years during this period. Of the eight patients without seizures, four later proved to have cystic fibrosis. Most of the patients with seizures appear to represent the syndrome of infant water intoxication. Hyponatremia may account for more seizures in early life than has been appreciated. Physicians and parents should avoid dietary practices which promote water intoxication. The etiology, diagnosis, and management of water intoxication and hyponatremic seizures are discussed. PMID- 3842165 TI - Rhabdomyolysis and myoglobinuria as manifestations of child abuse. AB - Rhabdomyolysis should be suspected in cases of physical child abuse in which there is extensive soft tissue injury. It is easily investigated using the urinalysis and serum CPK levels. Renal failure is the most common complication and manifests itself as acute tubular necrosis, sometimes accompanied by the following specific laboratory abnormalities: elevated creatinine-to-BUN ratio, hyperkalemia, and myoglobinuria. Treatment is aimed at the preservation of renal function and the prevention of complications caused by electrolyte abnormalities. A full recovery can be expected for adults with this disorder, but information about the pediatric population is sparse. Our series suggests rapid improvement with appropriate therapy. PMID- 3842166 TI - An infant fatality following verapamil therapy for supraventricular tachycardia: cardiovascular collapse following intravenous verapamil. AB - A four-month-old infant with myocarditis and supraventricular tachycardia was given intravenous verapamil (0.1 mg/kg). Immediately following the dosage, the patient developed cardiovascular collapse. Aggressive, appropriate cardiopulmonary resuscitative efforts--including ventricular pacing--failed to reverse verapamil-induced decompensation. Myocarditis may have been responsible for our failure to resuscitate this infant successfully. To our knowledge, this is the first reported pediatric fatality following intravenous verapamil. We suggest that proven or suspected myocarditis should be added to the list of contraindications for intravenous verapamil therapy. PMID- 3842168 TI - Cyanosis unresponsive to oxygen administration in three children. PMID- 3842167 TI - Imipramine poisoning in a child: lack of efficacy of resin hemoperfusion. AB - A three-year-old boy ingested up to 1,500 mg of the tricyclic antidepressant imipramine (Tofranil). He entered our facility within two hours of discovery, and multiple resuscitative efforts, which proved unsuccessful, followed. Resin hemoperfusion was used in an effort to remove imipramine from the systemic circulation. Serum concentrations of imipramine and its major metabolite desipramine were determined from serum drawn before, during, and after hemoperfusion. Serum concentrations of imipramine and desipramine did not change appreciably. No improvement in the clinical condition was noted during the hemoperfusion period, which was due in part to the fact that our patient was clinically brain dead upon arrival in our intensive care unit. Our subsequent literature review documents that this case represents the first reported use of hemoperfusion in a pediatric tricyclic antidepressant ingestion, hemoperfusion removes an insignificant portion of the total amount of tricyclic antidepressant ingested, and some pediatric literature misleadingly suggests that hemoperfusion may be useful in such patients. Physicians treating tricyclic antidepressant ingestion cases should avoid using hemoperfusion; standard supportive care remains the essential management response. PMID- 3842169 TI - Transdermal scopolamine intoxication in a child. PMID- 3842170 TI - Holiday hazards. AB - Presented is a selective review of the toxicities of various plants, decorations, and miscellaneous items popularly used during the holiday season. Particularly hazardous agents include mistletoe, holly, bubble lights, fireplace flame colors, alkaline batteries, and mothballs. Specific questions regarding management of exposure to these items should be referred to regional poison control centers. Avoidance is the most effective treatment. PMID- 3842171 TI - Intraosseous infusions: a review. AB - Intravenous access is critical in infants and children with severe shock or cardiac arrest. However, it is in these clinic situations that venous access may be most difficult. The technique of intraosseous infusion may provide a useful alternative to intravenous access in the initial phases of resuscitation. The method of insertion, indications, contraindications, and complications are reviewed. PMID- 3842172 TI - Apnea. PMID- 3842173 TI - [Biochemical nomenclature]. PMID- 3842174 TI - [Avian pathology in Ethiopia. Examination of 198 necropsies performed 1983-1984 at the Debre-Zeit Faculty of Veterinary Medicine]. PMID- 3842175 TI - [Study of reproductive pathology in cattle in Central Africa: survey of chlamydiosis and Q fever]. PMID- 3842176 TI - [Fluctuations, as a function of age, in the blood proteins of 6 litters of piglets in Shaba, Zaire]. PMID- 3842177 TI - [Influence of age, breed and sex on the blood proteins of cattle raised on a ranch in Shaba, Zaire]. PMID- 3842178 TI - The geographical distribution and animal hosts of Rhipicephalus bursa (Canestrini and Fanzago, 1877) in Israel. PMID- 3842179 TI - Acute water intoxication in sheep in Sudan. PMID- 3842180 TI - Effects of Cissus quadrangularis on goats and sheep in Sudan. PMID- 3842182 TI - Phosgene induced edema: diagnosis and therapeutic countermeasures. An international symposium. September 23-24, 1982. PMID- 3842181 TI - [Note on induced sterilization in the ram in a tropical area]. PMID- 3842183 TI - Basic anatomy and histology of the lung. AB - All studies of toxic effects must compare normal conditions with those existing after contact with the toxin. If the effects to be studied involve alterations of gross, microscopic or ultramicroscopic structures, then a knowledge of normality at each of these levels is essential. This understanding is equally true for every organ of the body from the skin to the bones. Our interest today is in the pulmonary effects of phosgene; consequently, this discussion of basic morphology will be directed entirely at the lower respiratory tract. While most of the research to be presented in subsequent papers will relate to experimental studies in animals of various species, all are probably intended to have relevance to human responses to contact with phosgene. This discussion, therefore, will be concerned with the human lung and with examples of two animal species, rats and dogs. Since any single author can do relatively little of the vast range of studies necessary to establish normal morphology, this discussion is necessarily derived largely from the literature. Rather than present copies of illustrations and charts, which would require extensive copyright negotiations, and many of which would lose detail in reproduction, its seems best to refer the reader to the original publications. Most of these are readily available in medical libraries. PMID- 3842184 TI - Prophylactic and antidotal effects of hexamethylenetetramine against phosgene poisoning in rabbits. AB - New Zealand white rabbits were exposed to phosgene doses, expressed as Ct factors, of 125-3120 ppm X min. Hexamethylenetetramine (HMT), 0.3 gm/kg as a 40% aqueous solution, was injected via an ear vein into separate groups of animals at 5-10 min pre-exposure or at 15 min post-exposure to the gas. Non-exposed and exposed, non-HMT-treated animals served as controls. As assessed by survival times, gross morphology of the lungs, percent lung water measurements, serum LDH values, and respiratory gas parameters, pre-exposure administration of HMT at Ct factors as high as 3120 ppm X min provided significant prophylaxis against the effects of phosgene. Post-exposure administration of HMT, however, provided no antidotal effect even when administered as soon as 15 min after exposure to 125 ppm X min phosgene. PMID- 3842185 TI - A literature review: therapy for phosgene poisoning. AB - A literature search designed to collect information on therapy for phosgene poisoning has been conducted for the period 1920-1982. To achieve this goal, literature services were consulted, cross references were carefully followed and, whenever possible, unpublished reports (e.g., from Edgewood Arsenal and Porton Research Station) were evaluated. The various therapeutic agents and measures described in the literature are presented in alphabetical order. When available, detailed data are given for the phosgene dose, interval of time between exposure and institution of therapy, therapeutic effect and parameters used to assess efficacy. A final summary presents general recommendations for therapy and for further research. PMID- 3842186 TI - Late sequelae after phosgene poisoning: a literature review. AB - The vast majority of phosgene intoxications (including cases with pulmonary edema) have a good prognosis. However, nearly all patients complain of exertional dyspnea and reduced physical fitness for several months to years after the accident; normalization of lung function values, too, may require several years. Occasional impairment of pulmonary function appears to be dependent more on smoking habits than on the severity of the original intoxication. Pre-existing chronic bronchitis may undergo severe and progressive deterioration after toxic pulmonary edema due to phosgene. Occupational health check-ups (including pulmonary function tests) are recommended for all persons handling irritant gases. Every patient having undergone the inhalation of phosgene or other irritants will ask the question of possible late sequelae. Due to new forms of treatment (glucocorticoids, positive pressure ventilation) the prognosis of severe cases has considerably improved during the last decades. The paper tries to summarize the present state of our knowledge. PMID- 3842187 TI - Mortality and causes of death among workers exposed to phosgene in 1943-45. AB - Mortality and causes of death from death certificates were analyzed among workers exposed to phosgene while working at a uranium-processing plant in Tennessee in 1943-45. Standardized mortality ratios (SMRs) were calculated by using death rates for U.S. white males. As of 1979, SMRs for all causes and for various selected causes were similar in 694 male chemical workers chronically exposed to low levels of phosgene in 1943-45 and in 9280 male controls who worked at the same plant. SMRs for diseases of the respiratory system were 107 (14 observed vs. 13.07 expected) in the chemical workers and 119 (292 observed vs. 245.75 expected) in the controls. In a group of 106 males who were acutely exposed to high levels of phosgene, there were 41 deaths observed vs. 33.87 expected (SMR = 121; 95% confidence limits = 86 and 165). One death, occurring within 24 hours of exposure, was from pulmonary edema due to phosgene poisoning (coded to "accidental causes"). Five deaths were coded to diseases of the respiratory system (SMR = 266; 95% CL = 86 and 622); in 2 of these 5 deaths, "bronchitis" due to phosgene exposure had been reported in 1945. Among 91 female workers with acute high-level phosgene exposure, frequencies of symptoms and early health effects (pneumonitis and bronchitis) differed from those reported for the 106 male cases; preliminary data on vital status of these females are too incomplete for analysis, and further follow-up is needed. PMID- 3842188 TI - Response of the pulmonary surfactant system to phosgene. AB - Rats were exposed to 240 ppm X min phosgene (1.0 ppm for 4 hrs) in a Rochester type chamber. At intervals thereafter over a 4 day period, lungs were removed for determination of wet weight; total, microsomal and surfactant protein concentrations; surfactant phospholipid concentrations; and 1-acyl-2-lyso phosphatidylcholine: palmitoyl-CoA acyl transferase activity. Immediately upon termination of the phosgene exposure, microsomal protein and acyl transferase activity were reduced below, and lung wet weight was elevated above, control levels. From Day 1 through Day 3 after the exposure, all measured parameters, except for the phosphatidylinositol constituent of the surfactant fraction, were increased above the control values. In general, maximum levels were observed on Day 2; however, the acyl transferase activity and surfactant concentration continued to increase on Day 3. The results suggest components of the pulmonary surfactant system may be involved in maintenance of pulmonary fluid balance and the presence of excess water in the lungs as a result of phosgene exposure may represent a signal for increased synthesis of anti-edematogenic materials in order to promote removal of the inappropriate fluid. PMID- 3842189 TI - Pathogenesis of phosgene poisoning. AB - Phosgene inhalation in concentrations greater than 1 ppm may produce a transient bioprotective vagus reflex with rapid shallow breathing in some individuals. Phosgene concentrations greater than 3 ppm are moderately irritating to eyes and upper airways. Toxic phosgene doses (greater than or equal to 30 ppm X min) inhaled into the terminal respiratory passages render the blood-air-barrier more permeable to blood plasma, which gradually collects in the lung. Some time passes, however, until the collection of fluid provokes signs and symptoms. This period in which the patient experiences relative well-being is known as the clinical latent phase. The clinical symptoms which follow and the pathological changes underlying them are discussed in detail; dose-effect relationships are demonstrated. The regression phase after poisoning has been overcome is briefly sketched. PMID- 3842190 TI - Early diagnosis of phosgene overexposure. AB - At the present time, the following parameters can be recommended for "early diagnosis" of phosgene overexposure: Phosgene indicator paper badges, to be worn by all persons involved in handling phosgene (these badges permit immediate estimation of the exposure dose in each individual case); Observation of the initial irritative symptoms of the eye and the upper respiratory tract after phosgene inhalation can provide a rough indication of the inhalation concentration and dose; X-ray photographs of the lungs make it possible to detect incipient toxic pulmonary edema at an early stage, during the clinical latent period. A number of additional parameters require further critical investigation. PMID- 3842191 TI - Calcium-accumulating inside-out vesicles in sickle cell anemia red cells. PMID- 3842192 TI - Three developmentally regulated genes identified by clones from an adult Schistosoma mansoni cDNA expression library. PMID- 3842193 TI - Myocardial and vascular effects of intracoronary versus intravenous milrinone. PMID- 3842194 TI - Excessive binding of the natural anti-alpha-galactosyl IgG to sickle red cells: enhancement of red cell destruction by a physiological process. PMID- 3842195 TI - Evidence for cycling of aggregate-containing tubules in toad urinary bladder. PMID- 3842196 TI - Nuclear mechanisms for the increase of epidermal growth factor receptor in squamous cell carcinoma. PMID- 3842197 TI - Vasoactive intestinal peptide as a possible transmitter of nonadrenergic, noncholinergic relaxation of pulmonary artery. AB - Electrical field stimulation of isolated guinea pig pulmonary artery induced a brief initial contraction followed by a more prolonged relaxation. alpha Adrenergic blockade prevented the contraction and enhanced the relaxation. beta Adrenergic and cholinergic muscarinic blockade partially reduced the relaxation, but 44.4% of the relaxation persisted after adrenergic and cholinergic blockade. The PA relaxation was associated with the release of immunoreactive VIP, both before and after this blockade. Tetrodotoxin abolished the nonadrenergic, noncholinergic relaxation and markedly reduced the release of VIP. This relaxation was similarly attenuated by a monoclonal antibody against VIP. PMID- 3842198 TI - Conversion of the antihypertensive neutral renomedullary lipid by the liver. PMID- 3842199 TI - Molecular abnormality of urinary glycoprotein crystal growth inhibitor in calcium nephrolithiasis. PMID- 3842200 TI - Sensory neurons "immortalized" by fusion with neuroblastoma cells. PMID- 3842201 TI - Alterations in calcium metabolism mediate dietary salt sensitivity in essential hypertension. PMID- 3842202 TI - Diprenorphine inhibits selectively the vasopressin response to hypovolemic stimuli. PMID- 3842203 TI - The leukotriene B4 omega-hydroxylase in human polymorphonuclear leukocytes is a membrane-associated, NADPH-dependent cytochrome P-450. PMID- 3842204 TI - Genetic defect in cortisol metabolism in primary open angle glaucoma. PMID- 3842205 TI - Prostaglandin alterations in barely hypertensive Dahl S rats. AB - In summary, prostacyclin, PGE2, and PGD2 are vasodilators and had significantly lower renal cortical and outer medullary concentrations in the borderline hypertensive S rats compared to normotensive R rats. Conversely, thromboxane is a vasoconstrictor which had significantly higher renal cortical and outer medullary concentrations in borderline hypertensive S rats compared to normotensive R rats. Thus, in borderline hypertensive S rats, both renal cortex and outer medulla have a prostaglandin pattern which favors vasoconstriction in cortical vessels and in descending vasa recta. This could partially account for the increased renal vascular resistance and low papillary plasma flows which are integral components of Dahl hypertension. The low PGE2 in S kidneys would also enhance Na reabsorption in collecting tubules and ascending limbs, thereby encouraging Na retention and hypertension. PMID- 3842206 TI - The human beta-actin multigene family. PMID- 3842207 TI - 5'-flanking DNA sequences of the growth hormone gene mediates thyroid hormone stimulation of growth hormone gene transcription. PMID- 3842208 TI - Tissue-specific influences affect glucocorticoid regulatory element actions on the human growth hormone gene promotor. PMID- 3842209 TI - Concentration of D-propranolol in cervico-vaginal mucus: targeting of a novel spermicide. AB - It may be possible to develop new contraceptives that can be administered by mouth and will exert their effects after concentration in cervico-vaginal mucus. D-Propranolol was administered in 80 mg doses by mouth to six healthy female volunteers. Samples of blood plasma and cervico-vaginal mucus were obtained before and on six occasions up to 24 hours after drug ingestion. D-Propranolol was concentrated in cervico-vaginal mucus. No changes in blood pressure, pulse, or forced expiratory peak flow (FEPF) were observed. PMID- 3842210 TI - Comparison of three multiload IUDs: MLCu250, MLCu375 and MLAgCu250. AB - A comparative study was made of three differently loaded Multiload intrauterine contraceptive devices. The IUDs were used by 450 women for 3 years unless the device was removed earlier. The reasons for IUD removal (pregnancy, bleeding and/or pain, and other) were recorded, and the data analyzed after 1 year and after 3 years using the log-rank method. No statistically significant differences could be found among the three devices either in rate of pregnancy nor IUD removal for any reason. PMID- 3842211 TI - Comparison of intramenstrual IUD insertion with insertion following menstrual regulation. AB - To evaluate the use-effectiveness and safety of IUD insertion immediately after menstrual regulation (MR) for delayed menses, a Lippes Loop D (LLD) intrauterine device was inserted in each of 100 consecutive clients at the University College Hospital, Ibadan, immediately after menstrual regulation. Pertinent event rates after 12 months of use were compared with those of 100 consecutive women who had the LLD inserted during menstruation. The cumulative net expulsion rate after 12 months of use was 8% for the study group and 4% for the controls. The overall rate of removals was 15% for the study group and 16% for the control group. None of the observed differences was statistically significant. The continuation rates at 12 months were comparable for both groups (78% and 80%, respectively). There were no accidental pregnancies during the study period. The authors suggest that IUD insertion immediately after menstrual regulation is as effective and safe as intramenstrual insertion, provided prophylactic antibiotics are given. PMID- 3842212 TI - Clinical experience with intrauterine devices in a private practice. AB - Clinical experience with intrauterine devices was evaluated, based on 627 insertions over a 14-year period in a private practice. Overall, there were few differences in the event rates leading to IUD discontinuation for the IUDs evaluated, principally Cu-7, Dalkon Shield and Lippes Loop. Pelvic infections were infrequent (0.7-2.2 cases per 100 woman-years of IUD use). The rate of PID in the study population appeared to be similar to that noted in the general population. IUD use did not appear to compromise future fertility, based on evaluations of patients after removal of their IUDs or from their return to fertility following IUD removal. IUD event rates (pregnancy, expulsion, displacement, removal for bleeding and/or pain) were related to the difference between endometrial cavity length and IUD length. A significant increase in the event rates was noted, regardless of the IUD type, when the endometrial cavity length exceeded IUD length by 2.0 cm or more, or when the difference between the endometrial cavity and IUD length was less than 0.5 cm. PMID- 3842213 TI - The oral pill in the Indonesian Population/Family Planning Program. AB - The oral pill is the most extensively used contraceptive in Indonesia. Of new users, 64% use the pill, 20% IUDs, 8% injectables, 6% condoms and 2% voluntary sterilization. Since the continuation rate of pill use is low as compared to the other non-permanent methods, i.e. the IUD and the injectables, special steps must be taken in order to reach the goal of the program, i.e. the reduction of the crude birth rate (CBR) to 22/1000 by the year 1990. These special steps involve selecting the best pill for Indonesian women, and determining the best contraceptive combination for each region and for new pill acceptors. The role of the oral pill in the program is also discussed. PMID- 3842215 TI - An IUD to fit any uterus. AB - A new copper intrauterine device is described. Experience during 40 000 woman months of use indicates that there have been no pregnancies and only 0.4 expulsions. At the end of 30 months of follow-up, 87.5% of the women are still wearing the device. PMID- 3842214 TI - Contraceptive efficacy of bioabsorbable pellets of norethindrone (NET) as subcutaneous implants: phase II clinical study. AB - The contraceptive efficacy of norethindrone (NET) fused pellets was evaluated over 12 months in a Phase II clinical study with three and four pellets, each pellet containing 35 mg of NET. Volunteers were healthy, fertile, sexually active women. The release rate of NET from three and four pellets, respectively, was 150.3 +/- 7.2 micrograms and 212.5 +/- 8.6 micrograms NET/day. Following the implantation of NET pellets, serum NET levels did not show any 'burst effect' and were sustained at levels between 0.4 and 0.6 ng NET/ml serum with three pellets and 0.6-0.7 ng NET/ml serum with four pellets. With three and four pellets, respectively, 40% and 27% of the women had normal menstrual cycles; 20% and 14% were amenorrheic; 27% and 37% had mid-menstrual spotting or bleeding; and 13% and 22% had prolonged episodes of bleeding. Cardiovascular, hepatic, and renal functions were normal throughout the study. Ovulation was inhibited in 85% and 92% of the cycles with three and four pellets, respectively. In women using three pellets, two pregnancies occurred, one at the 6th cycle and another at the 12th cycle. In women using four pellets, no pregnancies occurred during the entire period of study. PMID- 3842216 TI - Acceptability of the IUD in a Jordanian community. AB - Jordan has a population of about three million without a government family planning program. In this study, carried out in two medical centers in Amman, Jordan, over a period of two years, 600 copper intrauterine devices were inserted, with a failure rate of 2.8%. PMID- 3842217 TI - Postabortion insertion of the Nova T and MLCu250: preliminary results of a comparative study. AB - This 4-year prospective randomized study is designed to compare the effectiveness and complication rates of the Nova T and MLCu250 inserted immediately postabortion. At the cut-off date (30 November 1983), all patients in the first cohort of 400 women had completed at least 12 months of use. At this stage of the trial, no significant differences had emerged between the two devices in any of the standard termination categories. PMID- 3842218 TI - Pain relief at insertion and removal of an IUD: a simplified technique for paracervical block. PMID- 3842219 TI - Energy dispersive spectrophotometric and X-ray diffraction observations in IUDs. AB - This paper describes preliminary observations of the surface deposits on Lippes Loop, Dalkon Shield, and Saf-T-Coil IUDs removed after periods of time up to 15 years. Rosettes of euhedral rhombic crystals with a columnar prismatic habit were observed on a Lippes Loop that had been in situ for 15 years. All mineral deposits were found to be calcium salts, but the degree of crystallization varied significantly, from almost totally amorphous to the perfect euhedral crystal form. The microenvironment alone or in combination with cyclic changes in the biochemical milieu surrounding the IUD may influence the deposition of specific mineral species. PMID- 3842220 TI - Phase II clinical study of implanted norethindrone pellets for longterm contraception in women. Program for Applied Research on Fertility Regulation. AB - The use of subcutaneously implanted fused pellets made of norethindrone (NET) and pure cholesterol was evaluated as a means of longterm contraception (6 months) in 81 women at three clinics. Fifty-one women used pellets containing 103 mg NET (3 pellets) and 30 women used pellets containing 138 mg NET (4 pellets). There were no serious local reactions to the pellets. There was no apparent initial NET burst effect and serum NET levels remained constant over the follow-up period. Median NET serum levels were similar (p greater than 0.10) for women who used 3 or 4 pellets. Most menstrual cycles showed no evidence of ovulation (i.e., serum progesterone levels did not exceed 5 ng ml-1: the proportion of women with serum progesterone levels greater than 5 ng ml-1 was lower with the 4 pellet dose. For women who used either 3 or 4 pellets there was an increase (p less than 0.05) in the number of days of bleeding or spotting. There was a decrease in the incidence of dysmenorrhea (p less than 0.05) for both groups of women. There was a low incidence of side effects and complications. There were two pregnancies; both occurred in women using 3 pellets. PMID- 3842221 TI - A decade of experience with the TCu220C. AB - A decade of experience with the TCu220C has confirmed the prolonged high effectiveness, safety, and acceptability of this device. The present analysis concerns 906 interval insertions performed by three experienced operators using the retraction technique for placement of the TCu220C, and covers a total of 53,875 woman-months of experience. Gross cumulative pertinent event rates at 10 years were: pregnancy 7.5; expulsion 9.1; and removal for bleeding/pain and other medical reasons 21.9 and 9.2, respectively. Both the age and parity of the acceptor influence the long-term performance of the TCu220C. PMID- 3842222 TI - Postpartum IUD insertions in Manila, Philippines. AB - In comparative IUD trials conducted in the Philippines, IUDs were inserted immediately postpartum (within ten minutes postplacenta). The first study was designed to compare the IPCS-52 mg (Intrauterine Progestasert Contraceptive System) IUD with the TCu200 when inserted either by hand or with an inserter. Follow-up continued for three years because the IPCS model was designed to release progesterone for this length of time. There was one suspected pregnancy for which the IUD was removed during the study period. The expulsion rates were higher in the IPCS groups than in the TCu groups (p less than or equal to 0.05) and they were higher in the hand insertion groups than in the inserter groups (p less than or equal to 0.05). The second study was a comparison of the Lippes Loop D and a Delta Loop, modified by the addition of three biodegradable suture projections (made of Ethicon #2 chromic material) on the upper arms of the device. The purpose of this modification was to lower the expulsion rates associated with postpartum insertions. The expulsion rates for these two devices were comparable. There were no difficulties during insertion in either study, and few complaints were reported at follow-up. These two studies demonstrated that immediate postpartum IUD insertion proved a safe, effective means of postpartum contraception. PMID- 3842223 TI - Clinical experience with the MLCu250 IUD (eight-year results). AB - Between 1977 and 1981, 1561 MLCu250 standard model IUDs were inserted at the Family Planning Center, Department of Obstetrics and Gynecology, University Medical School of Debrecen, Hungary. The majority were in the first (61.3%) and second (32.2%) segment and only a few were in the third (5.4%), fourth (1.0%) or fifth (0.1%) segment. Insertions were performed in the postmenstrual, postabortal, postpartal and postpuerperal periods. This report evaluates the data for interval insertions only, representing a total of 1457 cases and 65762 woman months of use during an 8-year follow-up period. Using Tietze's life table technique, cumulative and yearly specific termination rates have been calculated. Fifty per cent of the devices were in place after 5 years of use, and 27.8% of the patients wore the IUD even at the end of the eighth year after insertion. The pertinent termination rate (pregnancy, expulsion, removal for bleeding/pain and for other medical reasons together) was 56.8 in the 96th ordinal month. These findings prove the good over-all performance of the MLCu250 IUD and demonstrate a longer life span for the device than was previously expected. PMID- 3842224 TI - IUD insertion during cesarean section. AB - An IUD (TCu220C) was inserted in 82 women during low-transverse cesarean section. No untoward effect on puerperal morbidity or lactation was observed and no serious complications occurred in this series. At 12 months the rates were zero for pregnancy and 7.7 for expulsion; the latter figure is comparable to that reported after immediate postplacental insertion of the same IUD model. Intracesarean IUD insertion is a procedure that deserves further promotion. PMID- 3842225 TI - Orally administered ketoconazole rapidly appears in seminal plasma and suppresses sperm motility. AB - Ketoconazole has been shown to exert spermatostatic effects in vitro on ejaculated dog, monkey, and human spermatozoa. Oral administration of the compound to adult male beagle dogs (50-246 mg/kg) or rhesus monkeys (85-100 mg/kg) was associated with a decline in motility of sperm in ejaculates obtained after dosing. In dogs the decline in sperm motility was correlated with the presence of ketoconazole in the seminal plasma, although the measured concentrations of ketoconazole were no more than one tenth that needed for in vitro activity. The serum levels of testosterone in the dogs receiving oral ketoconazole were profoundly suppressed but the extreme rapidity of onset of the ex vivo effect on sperm motility, which was noted within 4 hours of dosing, makes it unlikely that testosterone withdrawal plays more than a minor role in the spermatostasis. The results in animals invite further pursuit of this novel, rapid onset, reversible, single dose use of spermatostatic agents for their potential as male contraceptives. PMID- 3842226 TI - Transcutaneous procedures for male sterilization. AB - Outside the People's Republic of China transcutaneous methods of male sterilization are not widely used, even though there are advantages of these methods over surgical vasectomy procedures. Methods of transcutaneous sterilization (intratesticular, intraepididymal, and intravasal) that have been evaluated in men are reviewed. PMID- 3842227 TI - Dysplastic and degenerative diseases: the protective role of vitamins A and E. Rome, January 25, 1986. PMID- 3842228 TI - Regression of bronchial epidermoid metaplasia in heavy smokers with etretinate treatment. AB - 40 voluntary heavy smokers (over 15 packets-years) were selected for and have completed a six months etretinate treatment on the basis of an index of metaplasia (IM) greater than 15% determined according to the following procedure: bronchoscopy with systematic biopsies in 10 sites of the bronchial tree. Each biopsy was cut into 10 sections and an IM was calculated: (Formula: see text). Etretinate, a retinoid derivative, was given orally at the daily dose of 25 mg, at the end of which they underwent a second fibroscopy protocol. A highly significant reduction of IM (p = 10(-5)) was observed after 6 months of treatment for those of the patients who maintained their smoking habits during treatment. Besides, the 4 patients who stopped smoking while under treatment and are excluded from the statistical analysis, all had a complete regression of metaplasia at the second fibroscopy. No morbidity was due to etretinate or fibroscopy. Etretinate significantly reduces potentially precancerous bronchial epidermoid metaplasia in heavy smokers. Its association with smoking arrest may induce a rapid restoration of bronchial epithelium to normal. PMID- 3842229 TI - Role of oxygen in myocardial ischaemic and reperfusion damage: effect of alpha tocopherol. AB - There is evidence that oxygen-derived free radicals may play a role in myocardial ischaemic and reperfusion injury. Major sources of O2 free radicals formation during ischaemia and reperfusion are: the enzyme xanthine oxidase, activated neutrophils and the myocardial mitochondria. However, in the heart there are defense mechanisms against the toxic oxygen metabolites. They include the enzyme superoxide dismutase, catalase and glutathione peroxidase plus endogenous antioxidants like vitamin E, ascorbic acid and cysteine. We have investigated in the isolated rabbit hearts the effects of ischaemia and reperfusion on these defence mechanisms. 90 min of ischaemia and/or hypoxia induced a significant reduction of mitochondrial superoxide dismutase, and of reduced glutathione/oxidized glutathione ratio which was further declined after reperfusion indicating that an oxidative stress has occurred. These alterations are associated with massive tissue and mitochondrial calcium accumulation, loss of mitochondrial function and severe membrane damage. The effects of vitamin E on these parameters have been investigated. Administration of 1.1 mg of dl-alpha tocopherol acetate showed a protective effect on mitochondrial function but it failed to improve the recovery of mechanical function during reperfusion. PMID- 3842230 TI - [Preliminary clinical observations on the eutrophic-protective action on the corneal epithelium of combined vitamin A + E]. AB - The epithelio-protective activity of a combination of retinol and tocopherol has been studied. The two vitamins have been administered orally to a group of patients suffering from different corneal diseases. A control group was treated with a placebo associated to the usual topical therapies. With some reserve, the evaluation of the vitamin therapy is positive as the epithelial repairing was more rapid in the vitamin treated group, but the poor homogeneity of the corneal diseases permits a qualitative analysis only. PMID- 3842231 TI - The therapeutic effect of vitamins A and E in neurosensory hearing loss. AB - After an anatomical and physiological outline of the organ of Corti, the pathology of the cochlea related to the sensorineural deafness is described. The role of Vitamin A on cochlear function and the effects of Vitamin E in man are then emphasized, on the base of some experimental results. Clinical and therapeutic efficacy of the combination of Vitamin A + E is shown by a number of papers, pointing out a 5-15 decibel improvement of the pure-tone threshold in patients with sensorineural hearing-loss particularly when the auditory troubles are due to presbyaccusis. PMID- 3842232 TI - Differential pricing of pharmaceuticals and retail competition under the Robinson Patman Act. AB - Emphasis on cost containment by third-party payors has intensified economic competition within the health care system, creating powerful market forces which retail pharmacists had not envisioned a few years ago. Hospitals and alternative delivery systems now sell prescription drugs in direct competition with retail pharmacists. These entities are able to purchase their pharmaceuticals from manufacturers at prices far below those of the retailers. Retail pharmacist plaintiffs allege that such activities violate the Robinson-Patman Act which prohibits price discrimination. Retail pharmacists have achieved landmark victories in decisions establishing that nonprofit, state and local governmental hospitals reselling pharmaceuticals in competition with retail pharmacies are not exempt from the Act. This Article demonstrates that despite these victories, plaintiffs will have difficulty proving an actual violation of the Act by manufacturers and hospitals. Plaintiffs must establish competitive injury as well as refute the meeting competition defense. Retail pharmacists might discover that the Robinson-Patman Act is not the ally they had hoped for; instead, they should concentrate on innovative alternatives which will allow them to compete in an evolving health care system. PMID- 3842233 TI - A proposal for a nonreinstatement rule in unfair labor practice cases involving patient abuse. AB - Nursing home discharges of employees based on patient abuse raise a difficult issue when the motivating factor for the disciplinary action is union activism. A tension is created between the rights of employees to engage in protected concerted activity and the rights of patients to quality care. In 1974, Congress passed the Health Care Institutions Amendments, which granted to non-profit health care workers collective organizing and bargaining rights substantially similar to those which workers in other industries had enjoyed for decades under the National Labor Relations Act. Congress intended to give health care workers only that degree of parity, however, which is compatible with the provision of high quality patient care. The agency charged with enforcing the Act, the National Labor Relations Board (NLRB), has failed to distinguish employee misconduct in industrial settings from patient abuse in health care institutions when fashioning remedies for discriminatorily discharged union activists. The NLRB typically has ordered the reinstatement, with back pay, of the patient abuser as the patient's primary care-giver. This Article suggests that a front pay remedy is more appropriate to these cases because it protects the patient's right to be free from abuse without sacrificing employee unionization rights. PMID- 3842234 TI - Preferred provider organization liability for physician malpractice. AB - The preferred provider organization (PPO) is a recent innovation in the health care industry, designed to reduce costs through selective contracting and utilization controls. This Note examines malpractice liability theories potentially applicable to PPOs. The Note compares PPOs to other health care institutions, including hospitals and HMOs, and concludes that PPOs are at minimal risk of incurring liability for physician negligence. PMID- 3842235 TI - Fetal protection and potential liability: judicial application of the Pregnancy Discrimination Act and the disparate impact theory. AB - "Fetal vulnerability programs," which are employer attempts to protect employees' unborn fetuses from harm caused by the mothers' exposure to hazardous material in the workplace, have been challenged as a form of employment discrimination. This Note analyzes the recent judicial application of the Pregnancy Discrimination Act (PDA) and the disparate impact theory to fetal vulnerability cases. The Note also examines the business necessity defense's accommodation of legitimate employer interests. The Note concludes that a more potent business necessity defense, a stricter standard for evaluating alternative protective measures, and a judicial interpretation of the PDA which is more consistent with congressional intent are necessary for fair and reasonable resolution of these cases. PMID- 3842236 TI - [Experimental porto-systemic diversion in the rat: a comparative analysis of technics and results]. AB - A number of techniques for performing portacaval end-to-side and side-to-side pancreaticoduodenal and mesenterico-caval shunts in rats are described. These shunts, transposition and arterialization are valuable objects for training in microvascular surgery. Effects of shunts, liver function, hemodynamics, metabolic and neurological changes related to portal flow, liver metabolism, and portal pressure are compared. PMID- 3842237 TI - [Diagnosis and therapy of splenic injuries]. AB - The purpose of this work is a critical revision of spleen traumatism treatment. We have examined 46 patients which we treated by total splenectomy. We examined the recent literature on spleen functions and we tried to punctualize the newest methods for conservative treatment of the spleen. PMID- 3842239 TI - [Surgical therapy of recurrent varicocele]. AB - In the surgical treatment of recidivous varicocele, has been adopted in eight patients a personal technique that varies in some points from the Ivanissevich's one. Large dissection and resection of the spermatic vein in peritoneum back zone for 6-8 cm. length, prier ligature of all possible collaterals. In four cases has been applied the microsurgical technique, anastomosing the veins of the spermatic plexus to the saphena vein. Checks performed at distance of time haven't shown any relapsing case. The microsurgical technique should give the more immediate normalization of spermatogenesis. PMID- 3842238 TI - [Histiocytosis X. 3 different cases: eosinophilic granuloma, Hand-Schueller Christian disease, Abt-Letterer-Siwe disease]. AB - The authors present three different cases of histiocytosis X: the eosinophilic granuloma, the Hand-Schuller-Christian syndrome and the Letterer-Siwe syndrome. As it appears in the main articles concerning this argument, the Aa. emphasize the common features belonging to the three different forms of histiocytosis: the involvement of the bones and of other tissues. Moreover the prognosis is defined as good in the first case, uncertain in the second case and severe in the third. PMID- 3842240 TI - [Morphometric study of ultrastructural modifications in the maternal hepatocyte during normal gestation in the Wistar rat]. AB - Quantitative changes in hepatocyte ultrastructures during normal gestation were studied in Wistar rats with morphometric methods. On the 18th day of the gestation, variations in nuclearcytoplasmic ratio, size of R.E.R., mitochondria, lysosomes and microbodies were observed, with variations according to the localisation of hepatocyte inside the lobule. We report the most obvious effects as follows: An increase of R.E.R. in the central and perilobular zones. Mitochondria are larger and the rounded forms are more numerous inside the two lobular zones. The number of lysosomes and microbodies are only elevated in the perilobular cells. In conclusion, it is suggested that the hepatocyte organelles are significantly increased during gestation. This is probably due to the metabolic activation. These cellular modifications are only one aspect of the liver increase. PMID- 3842241 TI - Sensitivity of cultured chick embryo heart cells to acetylcholine. Evidence for nicotinic and muscarinic receptors. AB - Sensitivity of cultured chick embryo heart cells to acetylcholine changes with time in culture. In 24 h cultures, about 25% of the cells exhibit a positive chronotropic response to acetylcholine. This effect is no longer observed after 48 h in culture. Positive and negative chronotropic effects of acetylcholine can be related to the presence of nicotinic and muscarinic receptors evidenced by autoradiography. Some data suggest a possible relationship between the type of sensitivity to acetylcholine and the changes in cell membrane properties occurring in culture. PMID- 3842242 TI - [Neurophysiologic, psychomotor and psychologic indicators in workers after long term exposure to cholinesterase-inhibiting insecticides]. PMID- 3842243 TI - Cobalt and manganese interaction in the liver of rat. PMID- 3842244 TI - [Oleander poisoning]. PMID- 3842245 TI - [Acute hydrocarbon poisoning in childhood]. PMID- 3842246 TI - [Adult respiratory distress syndrome in burn cases]. PMID- 3842247 TI - Formation of associations of colored and flavored food with induced sickness in five avian species. AB - Domestic ducks, geese, pigeons, quail, and chickens were given colored, flavored, or colored and flavored food and then injected with lithium chloride. Each species showed learning of color and taste aversions. Flavor facilitated the formation of color aversions in ducks, geese, and pigeons but not in quail or chickens. Color interfered with the formation of flavor aversions in quail and chickens but not in the other three species. These findings indicate that all birds can probably associate both colored and flavored food with induced sickness and that colored food is more easily associated with induced sickness than is colored water. Moreover, these findings suggest that the capacity to associate colored and flavored food with induced sickness and the interaction between color and flavor in food vary between species. Birds, such as quail and chickens, that eat relatively tasteless food rely more on color than on flavor cues when forming learned food aversions. Birds that can select their food on the basis of taste, such as ducks and geese, rely more on flavor than on color when forming aversions to food. Birds, such as pigeons, that are initially raised on tasty food before switching to predominantly tasteless food show tendencies that are similar to those of ducks and geese. PMID- 3842248 TI - Active and passive avoidance following the administration of systemic DSP4, xylamine, or p-chloroamphetamine. AB - Groups of rats were administered either DSP4 (50 mg/kg, ip), xylamine (50 mg/kg, ip), or p-chloroamphetamine (2 X 10 mg/kg, ip), either 2 weeks or 1 week before the testing of two-way active avoidance. DSP4 and xylamine, the selective noradrenaline (NA) neurotoxins, caused a two-way avoidance impairment but p chloroamphetamine, the selective 5-hydroxytryptamine (5-HT) neurotoxin, did not do so. Pretreatment with desipramine (20 mg/kg, ip) blocked the avoidance impairment caused by DSP4 and xylamine treatment. Neither DSP4 nor xylamine caused any alteration of passive avoidance retention. The biochemical analyses indicated severe NA, but not 5-HT, depletions in the DSP4 and xylamine conditions and drastic 5-HT, but not NA, depletions in the p-chloroamphetamine conditions. These results confirm and extend earlier findings concerning the role of NA in avoidance behavior. PMID- 3842249 TI - Analysis of appetitive motivation in preweanling rats: application of bromocryptine mesylate. AB - Two experiments investigated discrimination learning with preweanling rats (Rattus norvegicus) following different experimental deprivation treatments. In Experiment 1, 10- to 11-day-old Sprague-Dawley rats were deprived for 24 h of either nutrients and maternal contact through placement in an incubator or only nutrients by placement in the nest of a bromocryptine mesylate-treated dam. Bromocryptine mesylate inhibits prolactin release and thereby prevents lactation with only minimal effect on maternal behaviors. After the deprivation period, pups were trained to perform a spatial discrimination for milk infusion into the oral cavity or for the opportunity to suckle the dry nipples of an anesthetized dam. The results revealed, irrespective of deprivation treatment, that pups failed to acquire a simple T-maze spatial discrimination for milk reward although they rapidly learned to approach and locate an anesthetized dam to suckle. Experiment 2 followed up with a different procedure. Results indicated that during bouts of suckling rat pups preferred an active, lactating dam letting down milk to an identical dam not letting down milk due to her pretreatment with bromocryptine mesylate. These results illustrate a constraint on learning which affects immature rats. The capability to learn on appetitively motivated spatial discrimination appears intricately tied to the context in which training occurs. Results are discussed according to how the organism's expectancy can mediate performance. PMID- 3842250 TI - The development of aversive responses to quinine in hyperthyroid rats. AB - Normal and hyperthyroid rat pups received intraoral infusions of 0.25% quinine hydrochloride at 8, 10, 12, 14, or 16 days of age. Chin scraping and paw treading, aversive behaviors that adult rats show to quinine, emerged at 12 to 14 days in normal animals and were accelerated in hyperthyroid animals. Once these behaviors emerged, the hyperthyroid pups showed levels of both paw treading and chin scraping that were typical of controls several days older. Hyperthyroid and control pups did not differ in their intake of quinine at ages at which there were marked differences in chin scraping and paw treading. Other types of responses that pups show to aversive stimuli, such as paw treading. Other types of responses were not affected by the thyroid treatment. These findings suggest that the appearance of chin scraping and paw treading at 12-14 days of age in normal animals results from maturation of motor systems underlying these behaviors, and that this maturation can be accelerated by treatment with thyroid hormones. PMID- 3842251 TI - Pharmacological dissociation of memory: anisomycin, a protein synthesis inhibitor, and leupeptin, a protease inhibitor, block different learning tasks. AB - Inhibition of protein synthesis by anisomycin for a short duration impairs memory of a one-trial inhibitory avoidance task in rats. Memory of escape conditioning involving eight trials is disrupted only if the duration of protein synthesis is prolonged by repeated injections. In marked contrast, olfactory memory of rats trained on two odor discriminations is not affected by anisomycin even if the duration of inhibition is prolonged and the number of trials is reduced to a minimum. In previous work, leupeptin, a thiol proteinase inhibitor, was shown to impair olfactory discrimination learning, but left inhibitory and avoidance conditioning intact. Together, these results provide a pharmacological double dissociation of memory, and suggest that the same chemistries, or mixtures of chemistries, may not be involved in all types of memory. PMID- 3842252 TI - Little oscillation of daily food intake in mousekiller rats as opposed to nonkiller rats before any confrontation with mice. AB - During 46 consecutive days the daily food intake and weight were recorded in 16 male Wistar rats. On Days 31-45 one mouse was presented each rat daily. Before any experience with mice (Days 0-27) the mousekiller rats, compared with the nonkiller rats, regulated their individual food intake more closely to their homeostatic equilibria, corrected for the linear trend. This result indicates a functional difference in food intake regulation between mousekiller rats and nonkiller rats prior to any experience with mice. However, no difference in the mean food intake was found between the mousekiller and the nonkiller rats. PMID- 3842253 TI - Effects of post-trial injection of beta-endorphin on shock-induced fighting are dependent on baseline of fighting. AB - The effects of repeated post-trial administration of 10 micrograms/kg beta endorphin on the development of mutual fighting in pairs of rats submitted to various intensities of electric shock were investigated. beta-Endorphin blocked the development of fighting responses when a low footshock intensity was used, but facilitated it when a high shock intensity was delivered. A detailed analysis of the relationship between shock intensity, baseline of fighting, and effects of beta-endorphin showed that the effects of beta-endorphin were dependent on the behavioral baseline rather than on shock intensity per se. PMID- 3842255 TI - Myocardial revascularization in acute conditions. Medico-surgical aspects. International symposium. Brussels, November 3-5, 1984. PMID- 3842254 TI - On how passive is inhibitory avoidance. AB - Rats were trained in a step-down inhibitory avoidance task using a 25 X 25-cm platform and either a 0.3- or a 0.8-mA training footshock. Immediately after training retrieval was good in all animals; but at 24 h there was a decline in the group trained with 0.3-mA footshock. This decline was not observed in animals submitted to an immediate retrieval test and then tested again at 24 h. Thus, the immediate retrieval test apparently served the purpose of a rehearsal. A considerable degree of activity (rearing, ambulation, sticking the head out of the platform) was observed in test sessions. Activity scores were lower in the animals trained with the 0.8-mA footshock. The amount of activity, however, was unrelated to retrieval performance (i.e., to test session step-down latency). PMID- 3842256 TI - Comparison of the influence of nitrates, molsidomine and SIN-1, a molsidomine metabolite in acute coronary insufficiency. PMID- 3842258 TI - Systemic or intracoronary thrombolysis in acute myocardial infarction. PMID- 3842257 TI - Percutaneous transluminal coronary recanalization in evolving acute myocardial infarction: technical aspects. PMID- 3842259 TI - The extent of recovery of myocardial function after coronary artery reperfusion is highly time dependent. PMID- 3842260 TI - Assessment of prognosis in unstable and in variant angina. PMID- 3842261 TI - Toxic oil syndrome. PMID- 3842262 TI - Healing-promoting action of teprenone, a new antiulcer agent on acetic acid ulcer in rats. AB - Healing promoting action of teprenone on acetic acid ulcer in rats was assessed in comparison to that of cimetidine and proglumide by histological measurements. Teprenone (100 mg/kg X 2/day, p.o.) decreased the macroscopic ulcer index and the defective area in the ulcerated region by 32.0% and 33.3%, respectively. In addition, this drug increased the decreasing index of exposed ulcer floor and the mucosal regeneration index by 28.1% and 38.0%, respectively. However, the thickness of the ulcer base and the development index of collagen fibers were little affected by this drug. Cimetidine (100 mg/kg X 2/day, p.o.) showed a 27.2% decreasing action on the macroscopic ulcer index and a 31.3% increasing action on the thickness of the ulcer base, but failed to increase the mucosal regeneration index. Specimens from the cimetidine-treated rats were characterized by marked granulation proliferation beneath the ulcer floor. The upper layer of the granulation tissue was very rich in inflammatory cells. Proglumide (250 mg/kg X 2/day, p.o.) was scarcely effective on any parameters. These results indicate that teprenone remarkably promotes the regeneration of the defective mucosa during the ulcer healing process, and the effectiveness of cimetidine according to the macroscopic observation may be due to excessive formation of granulation tissue in the defective region. PMID- 3842263 TI - DNA grading of malignancy and tumor regression in prostatic carcinoma under hormone therapy. AB - The prognostic value of the DNA malignancy grade (DNA-MG) and of the DNA regression index (DNA-RI) for survival was tested in 19 patients with prostatic carcinoma under hormone therapy. Measurements were performed on repeated Feulgen stained transrectal aspiration biopsy smears by DNA image cytometry. The DNA-MG was demonstrated to be an objective scalar index of high prognostic value for the individual patient. The prospective tumor response to hormone therapy could be predicted from the DNA-MG. Independently of the DNA-MG, the DNA-RI provided additional prognostic information concerning tumor regression and survival of prostatic cancer patients under conservative therapy. The determination of DNA-RI allows the early identification of an ineffective conservative therapy. PMID- 3842265 TI - Urothelial carcinoma of the prostate. AB - Urothelial carcinoma is a rare type of prostatic carcinoma which as a rule bears an unfavourable prognosis. In our material it comprises 4.5% of all prostatic carcinomas. It can occur isolated in the prostate as well as in connection with a urothelial carcinoma of the urinary bladder, which may have directly infiltrated the prostate. Almost one-third of our cases are combined with an ordinary carcinoma of the prostate. The majority of pure urothelial carcinomas, with or without bladder involvement, are found in stages 0-B (59 of 68 cases). When combined with an ordinary prostatic carcinoma, most urothelial carcinomas (20 of 29 cases) are present in stages C and D. Independent of bladder involvement, 24 urothelial carcinomas are grade II and 86 grade III tumours. Survival times range from 12 to 84 months (average 34.8 months) in grade II and from 1 to 103 months (average 29.5 months) in grade III carcinomas. Problems in differential diagnosis arise when urothelial carcinoma has to be distinguished from solid or, rarely, cribriform prostatic carcinoma. Diagnostic criteria for urothelial carcinoma are compact formations without stroma being sharply delineated from stroma, extensive ductal growth pattern with necroses of comedo type, high mitotic rates and perifocal inflammation. PMID- 3842264 TI - Androgen binding in prostatic carcinoma by histochemistry: update 1985. AB - Fluorescent androgen ligands were employed to study putative androgen-binding (AB) sites in a number of men with prostatic adenocarcinoma. Results were compared with biochemical androgen receptor determinations in over 150 patients with agreement in 86% (p less than 0.001). AB by histochemistry correlated significantly with the outcome of hormonal manipulation (p less than 0.001) but not with response to radiation therapy (p = 0.55) or to 125I implantation (p = 0.54). There was a degree of positive interaction between histochemically and biochemically determined AB sites which produced a significant improvement in assay specificity (p less than 0.05). These findings indicate that the best method for prediction of hormone response in prostate cancer is provided by a combination of assay techniques. PMID- 3842266 TI - [Medial and lateral discoid menisci in the same knee. Apropos of a case]. AB - To our knowledge, the case of association of discoid lateral and medial menisci in the same knee has not yet been reported. There are several factors which may contribute in the development of discoid meniscus: usually congenital, the types described by SMILLIE and WRISBERG must be distinguished and have not the same prognosis; thus, the discoid meniscus only acquired after birth seems rare. PMID- 3842267 TI - [Turner's syndrome and the urocytogram]. AB - The cellular material studied in the urinary sediment mainly obtained from exfoliated cells of the bladder trigone was submitted to hormonal stimulation. These cell changes constitute the basis of a cytological method called urocytogram. The urinary sediment was examined in twenty seven girls with Turner's syndrome. The authors consider the interest of repeat examinations in the follow-up and treatment of these patients. PMID- 3842268 TI - [Value of aspiration cytology for the evaluation of breast cancer recurrence]. AB - The authors studied at the "Centre Anticancereux de Rennes" the value of fine needle aspiration cytology in the valuation of recurrences in breast cancers. The cytologic procedures were made on breast scars. The cytologic investigation interested 32 cases of carcinoma recurrences. The high rate of correct cytology diagnosis and the very low of wrong results prove the value and interest of the fine needle aspiration cytology for recurrences in breast cancers. PMID- 3842269 TI - [Pulmonary lobe arteries of the rabbit]. PMID- 3842270 TI - [Morphological aspects of arterial islands in the circle of the base of the brain and the basilar trunk in the rat]. PMID- 3842271 TI - [Does mechanical tension regulate the development of muscular rudiments?]. AB - Following destruction of the right anterior member bud on four-day old chick embryos, a study was made of right and left pectoral muscle growth on serial sections stained by ordinary methods. Certain regions were also examined in the electron microscope. Mitotic activity was studied autoradiographically following the injection of thymidine. Early, frank changes in the pectoral muscle on the amputation side were connected with growth, differentiation and organogenesis: regressive processes were also observed. PMID- 3842272 TI - [Arterial microvascularization of the ovary in the rabbit during the period of ovulation]. PMID- 3842273 TI - [New aspects and controversies on the vascularization of the white pulp of the spleen in the rat]. AB - The authors have studied the arterial supply of splenic white pulp of the rat, by means of optic and scanning electron microscopy. This work shows that the marginal zone is a free and interstitial circulatory one that envelopes completely the periarterial lymphocyte sheets. These ones are vascular exclusion areas although crossed by vessels, probably impermeable, that pour their contents at the inner border of the marginal zone. It was impossible to find a so called "marginal sinus" neither a complete nor an incomplete one. These facts can explain and change some poorly understood immunological aspects. PMID- 3842274 TI - Magnetic resonance (MR) cine imaging of the human heart. AB - A novel approach has been developed for MR cine imaging of the human heart by a modified ECG-gated 2DFT method. A pulse sequence has been devised to minimise the effects of saturation which can be anticipated in sequences that require rapid pulsing. Five frames are produced at the same anatomical level at predetermined intervals during the cardiac cycle. The total time taken to achieve this data is 8 minutes. Additional frames can be interleaved by repeating the sequence with an ECG-gated delay. The anatomical sections, which can be in any orthogonal plane, are then displayed as a cine loop. Cine display in the coronal plane has been used to examine 10 volunteers and 12 patients. In addition to the morphological feature displayed in single slice ECG-gated imaging, areas of dyskinesia can be detected and subjective estimates have been made of left ventricular function. PMID- 3842275 TI - The pre-operative embolisation of vascular malformations. AB - Large arteriovenous malformations frequently require surgical excision in order to prevent or treat the potentially serious problems they can cause ranging from haemorrhage and pain to cardiac failure. The surgery itself is usually difficult and often dangerous due to the serious risk of major intraoperative haemorrhage. Transcatheter arterial embolisation has greatly facilitated the management of small arteriovenous malformations but may only afford temporary relief of symptoms in very large lesions. Recanalisation of occluded vessels and revascularisation via previously insignificant collateral vessels means that large lesions cannot be effectively managed by this method alone. Previous surgery and ligation of feeding vessels may make effective embolisation difficult or impossible and a combined radiological and surgical approach to these lesions may permit definitive treatment. We present three cases in whom the pre-operative embolisation of buttock arteriovenous malformations facilitated successful surgical excision. PMID- 3842276 TI - The role of breast scintigraphy in detecting breast masses. AB - 127 breast scans were performed on 83 female patients using technetium-99m diphosphonate. 46 out of 48 patients with breast cancer had positive breast scans manifested by a focal increased uptake in 37 patients and a diffuse increased uptake in the remaining 9 patients. Benign breast lesions such as fibrocystic disease, fibroadenoma and fat necrosis may also concentrate the radioactive agent in a focal or a diffuse pattern. So breast scanning is a sensitive though nonspecific modality to detect malignant breast lesions and it is worthwhile performing it on all women referred for bone scan. PMID- 3842277 TI - Dose rate dependence of response of mouse lung to irradiation. AB - The dose-rate dependence of lung damage in mice has been studied using LD50/50 180 as an index of the incidence of radiation pneumonitis. Mean lethal doses for 60Co gamma radiation to the thorax delivered at 100, 25 and 6 cGy/min were 1403, 1923 and 2488 cGy respectively. There were statistically significant differences between values obtained at 6 and 25 cGy/min and between those obtained at 25 and 100 cGy/min. An isoeffect plot of this data on a log-log graph shows the sparing effect of dose rate reduction to be greater for the lung than for more rapidly responding systems (colony forming units of small intestine and Chinese hamster cells in culture). PMID- 3842278 TI - A technique for simultaneous radiography and electromyography. PMID- 3842279 TI - Measurements from digital scanned projection radiographs: couch detail and detector artefact removal by simple image enhancement. PMID- 3842280 TI - Spondyloschisis of the anterior arch of the atlas. PMID- 3842281 TI - Bone scintigraphy in two siblings with pulmonary alveolar microlithiasis. PMID- 3842282 TI - Concentric enlargement of the optic canal due to metastatic carcinoma of the breast. PMID- 3842283 TI - Occult hydatid disease presenting as a spontaneous pneumothorax. PMID- 3842284 TI - Occult central pneumothorax. PMID- 3842285 TI - Brachialis Seldinger puncture with use of introducer sheath. PMID- 3842286 TI - The response of pig skin to single doses of irradiation from strontium-90 sources of differing surface area. PMID- 3842288 TI - Misleading urine tests after using contrast media. PMID- 3842287 TI - Survival results for cancer of the tongue, Westminster Hospital, 1947-1976. PMID- 3842289 TI - Radiological demonstration of healing in Paget's disease of bone treated with APD. AB - Twenty-three patients with Paget's disease received the bisphosphonate APD and were examined radiologically every 6 months. Because routine roentgenographic procedures were followed, a number of the X rays were not fit for comparison. The radiographic technique, as well as the positioning of the patients, is critical since both could lead to artefacts. All patients reached normal biochemical levels, usually within 6 months. Out of the 23 patients 11 showed definite radiological improvement in one or more lesions; probable improvement was seen in another three. Of the 65 individual lesions, with films that were comparable, 30% definitely and 20% probably improved; 50% did not change but deterioration was never encountered. Osteolytic lesions in the long bones are most suitable for the evaluation of radiological changes and follow-up of these lesions during treatment should be most rewarding. PMID- 3842290 TI - Contrast agents and enzyme inhibition. II. Mechanisms. AB - The inhibition of enzymes by radiological contrast agents has been invoked to explain some of their clinical effects. In a previous paper, in-vitro studies of the inhibition of the enzyme acetylcholinesterase were presented and some clinical correlations were discussed. More detailed studies, described here, have now shed new light on the mechanisms involved in this important phenomenon. Because the findings restore the iodine atoms to a central role, they have important general implications for contrast agent pharmacology. PMID- 3842291 TI - Deriving absolute values of alpha and beta for dose fractionation, using dose incidence data. AB - A method is described for calculating absolute "operational" values of the parameters alpha and beta that characterise dose fractionation data for tissues, by using the steepness of dose-incidence curves measured around each dose per fraction investigated. The values are deduced from published mouse lethality data after irradiation of the bone marrow (alpha = 0.9 Gy-1; beta = 0.06 Gy-2), the lung (alpha = 0.14 Gy-1; beta = 0.02 Gy-2), and the oesophagus (alpha = 0.06 Gy 1; beta = 0.004 Gy-2). With bone marrow and other hierarchical renewal tissues, the operational values apply also to the inactivation of target cells which are the stem cells in the tissue. For other tissue types the interpretation of the values is unknown. The operational values are useful in characterising the steepness of dose-incidence curves for normal tissue injury after different fractionation schedules. PMID- 3842292 TI - An unusual congenital abnormality of the renal artery: left renal artery arising from the right renal artery. PMID- 3842293 TI - CT demonstration of retinal detachment secondary to choroidal metastatic disease. PMID- 3842294 TI - The Manchester System and the BCRU recommendations for brachytherapy source specification. AB - The decision to endorse and implement the BCRU recommendation has been taken after careful consideration and discussion amongst those currently active in brachytherapy treatment at the Christie Hospital, Manchester. We believe it to be both logical and scientifically sound. The practical measures discussed here outline how the Manchester System will operate with the new method of source specification, and we urge other users of the Manchester System throughout the world to adopt similar measures and accept the BCRU recommendations also. PMID- 3842295 TI - Radiation response of endothelial cells in vitro. PMID- 3842296 TI - Hyoscine butylbromide to relieve utero-tubal obstruction at hysterosalpingography. PMID- 3842297 TI - Radiology in developing countries. PMID- 3842298 TI - Proceedings of the British Institute of Radiology. Radioisotope labelling of circulating cells--techniques and clinical applications. Abstracts. London, November 22-23, 1984. PMID- 3842299 TI - CT scanners in the UK. PMID- 3842300 TI - The impact of treatment errors on post-operative radiotherapy for testicular tumours. AB - Twenty-four patients receiving post-operative radiotherapy for testicular tumours have been studied to assess the impact of treatment errors. Regular treatment verification radiographs were performed and compared with simulator planning radiographs. It was demonstrated that lymph nodes in the area most at risk, i.e., para-aortic nodes at L1 to L3 on the ipsilateral side, were inadequately irradiated on 10% of treatments, and that at least one lymph node miss was recorded in 12 of the 24 patients. These results are considered to be a minimum estimate. Mostly para-aortic fields 8.0 cm wide were used, but it was shown that the number of lymph-node misses could have been substantially reduced by using fields 9.0 cm wide, whilst the consequent increase in irradiated kidney volume was considered acceptable. PMID- 3842301 TI - Crossed sagittal-suture cephalhaematoma. PMID- 3842302 TI - Calcification of the thoracic aorta in a child. PMID- 3842303 TI - Pelvic digit. PMID- 3842304 TI - Fetal cystic hygroma, web neck and trisomy 13 syndrome. PMID- 3842306 TI - The value of systematic performance monitoring on a Picker 1200SX CT scanner. PMID- 3842305 TI - Radiological findings in a case of Charcot-Marie-Tooth disease. PMID- 3842307 TI - Scapular fracture. PMID- 3842308 TI - Symptom duration and survival. PMID- 3842309 TI - Radiological evaluation of asymmetrical limitation of hip abduction during the first year of life. AB - Asymmetrical limitation of abduction of the hip may be found on screening of children in the first year of life. The clinical features identified may occur in congenital dislocation of the hip but most infants do not have or develop hip dislocation. Radiological changes are present on the side of limitation of abduction and include a higher acetabular angle, retardation of femoral head epiphyseal development, pelvic obliquity and a rotational deformation of the pelvis in the transaxial plane. The appearances are postural deformities due to persistent infant positioning and are self-correcting. If aggressive treatment methods are to be avoided, the radiologist should not confuse these changes with those of congenital hip dislocation or subluxation. PMID- 3842310 TI - The painful swollen sterno-clavicular joint. AB - Thirteen patients with isolated pain and swelling of a sterno-clavicular clavicular joint have been reviewed. Three groups were identified. Group 1 comprised four patients, all of whom had a short history of less than six weeks and suffered a pyarthrosis or malignant disease; group 2, four patients who were shown to have features of condensing osteitis of the clavicle (Cone et al, 1983); and group 3, five patients, had degenerative arthritis of a sterno-clavicular joint. The only difference between groups 2 and 3 were that patients in group 3 had a rather longer history, both articular surfaces were involved and showed a possible increase in the incidence of degenerative joint disease elsewhere. It is suggested that condensing osteitis is but a part of a spectrum of degenerative disease of the sterno-clavicular joints, akin to discogenic vertebral body sclerosis (McCarthy & Dorfman, 1982). PMID- 3842312 TI - Experimental evaluation of various available contrast agents for use in the gastrointestinal tract in case of suspected leakage. Effects on peritoneum. AB - The effects of seven contrast agents were studied on the peritoneum of rats in order to find the most suitable and safe contrast agent in cases where leakage might be expected from the gastrointestinal tract into the peritoneal cavity. Hexabrix appeared to give the least tissue reaction, with Amipaque and Gastrografin in second place (but not significantly different statistically). PMID- 3842311 TI - Radiological evaluation of mucocoele of the paranasal sinuses. AB - Ten cases of mucocoele of the para-nasal sinuses are reported. Plain X-ray findings were suggestive of the diagnosis in all cases. CT revealed a well defined homogeneous mass, isodense with brain, with expansion of the para-nasal sinuses and extension of the mass into the orbit or parasellar area in eight cases. Surgical confirmation was obtained in all cases. PMID- 3842313 TI - Tumour antigens in experimental and human systems. PMID- 3842314 TI - Cell surface antigens of melanocytes and melanoma. AB - One major focus of cancer immunology is the question of tumour-specific antigens, the existence of which has yet to be proven. The prime candidates for antigens that can be considered tumour-specific are the class 1 unique antigens that have been serologically defined on human malignant melanomas by antibodies from the tumour-bearing host. In addition to these antigens, intensive immunological, biochemical and genetic analyses of melanoma have permitted a rudimentary classification of other surface antigens expressed by this tumour type. Cell surface antigens of melanoma can be grouped into three general classes: restricted antigens (i.e. antigens which are expressed by melanomas and astrocytomas) many of which are differentiation markers characterizing cells of neuroectodermal origin; antigens with intermediate distribution (i.e. antigens which are present on some cell tumour types but not on others and which show a limited distribution on normal tissues and cells); and antigens with broad distribution (i.e. antigens expressed by most human cells either malignant or normal). The detailed knowledge of the surface antigens (i.e. differentiation antigens and class 1 unique antigens) of melanoma cells has permitted a rational and coherent approach to assessing the possibility of immunological control of malignant melanoma in the clinic. PMID- 3842315 TI - Characteristics of tumour-specific antigens. AB - It is clear that an essential and detailed body of knowledge is now becoming available through recent investigations in the experimental animal and in humans concerning the biochemical and genetic characteristics of tumour antigens, especially tumour-specific antigens. Hopefully, through this knowledge, we shall be able to improve the diagnosis and control of cancer. To summarize the recent findings in our laboratory, proteins p82 and p86 have been isolated and apparently purified from MC-induced sarcomas and from an SV40-induced sarcoma of BALB/c mice. Each protein, where assayed, shows a specific immunogenicity for the tumour from which it was isolated. Both p82 and p86 are present on the several sarcomas we studied and have been purified using the isolation and chromatographic procedures used initially for Meth A. On the basis of information obtained to date, p82 and p86 appear to be separate entities as determined by their chromatographic patterns, molecular masses, isoelectric points, amino acid compositions and reactivities to the specific antisera raised against the purified antigens. Each appears to be a well-conserved protein. Partial amino acid sequences obtained from p82 indicate that p82 is a unique protein. The answer to whether p82 and p86 are related or unrelated molecules, however, must wait for more complete structural studies. Such studies will hopefully lead to a molecular characterization and identification of the genetic mechanisms responsible for diversity of TATA, and will determine whether TATA within a group (for example among carcinogen-induced sarcomas) represent a family of structurally related molecules with polymorphic epitopes coded for by a single locus, or unrelated molecules coded for by several loci. PMID- 3842316 TI - The molecular nature of multiple tumour-associated antigens expressed by a Rauscher-MuLV induced leukaemia. AB - The identification of the molecules that bear the antigenic determinants recognized during an anti-tumour immune response is an important goal of tumour biology. It is now well established that most murine tumours express multiple tumour-associated antigens and in many cases it has been possible to show that these multiple antigens are expressed on completely different molecules. In the case of tumours induced by DNA and RNA viruses, certain virally encoded proteins may be tumour antigens. However, these tumours, like tumours of nonviral origin, also express other antigen-bearing molecules that are encoded by cellular genes. Frequently, the same tumour-associated antigen-bearing molecules are shared by all independently induced tumours of similar aetiology leading to the prediction that the expression of these antigenic molecules is linked to the molecular events necessary for tumour induction. Many of the nonviral tumour-associated antigen-bearing molecules purified to date are also found on normal tissues, but the normal metabolic function of these molecules and the alterations that render them antigenic are not yet understood. PMID- 3842317 TI - Recent advances in the treatment and research in lymphoma and Hodgkin's disease. PMID- 3842318 TI - Monoclonal antibody therapy of lymphoid malignancy. AB - Monoclonal antibodies which bind to tumour cell surface antigens have produced regressions of malignancies in an increasing number of clinical trials. The largest experience to date is in the treatment of refractory B and T lymphoid tumours using a variety of intravenously administered mouse monoclonal antibodies. Treatment with antibodies against common differentiation antigens or very specific anti-idiotype antibodies has been effective in both cases. Toxicity has been acceptably low. A number of problems which limit the application and efficacy of monoclonal antibody therapy of lymphoid malignancy have been identified. Most prominent among these are tumour heterogeneity, which allows non antibody binding subpopulations of the tumour to escape therapy, and the patient's immunological response to the monoclonal antibody-tumour cell complex. As more experience is accumulated, solutions to these problems will be found. PMID- 3842319 TI - Phenotypic and genotypic analysis of Hodgkin's disease derived cell lines: histopathological and clinical implications. AB - Five Hodgkin's disease (HD) derived cell lines were established in vitro in our laboratory in the last seven years. Morphological, cytochemical, immunological and cytogenetic marker analysis demonstrated that the in vitro cells represent genotypically and phenotypically the in vivo Hodgkin (H) and Sternberg-Reed (SR) cells in biopsy specimens. The cultured cells resemble haematolymphoid cells at different stages of maturation. Four of the five continue to grow in vitro as suspension cells after more than 50 months. Four more in vitro HD-derived lines were described recently by several authors. A summary of the various marker characteristics of these in vitro lines is given as a synopsis of the phenotypic marker spectrum and is discussed in comparison with our own cell lines. There is a striking similarity between two of the newly established lines (CO, HDLM-2) and our lines whereas the two other in vitro established cultures seem to resemble cell species further along the line of maturation to B lymphocytes (DEV) and monocytes (SU-HD-1). Gene rearrangement experiments undertaken with the L428, L540, L591 and the CO cell line show that the L428 and 591 cells have undergone gene rearrangement, the L428 being compatible with the genotypic state of a pre-B cell; the L591 cells, similarly rearranged furthermore demonstrated functional light chain rearrangement, compatible with B-cell development. By cytogenetic analysis chromosome 7 was found to be affected in all our described lines. This chromosome appears to be particularly unstable and vulnerable in patients with HD, since all tested cell lines revealed multiple abnormalities of this chromosome, a finding which is in accordance with observations made by other investigators in HD-biopsy cells. Since similar structural changes or loss of chromosome 7 is a characteristic event in cases of secondary acute non lymphocytic leukaemia, it is speculated that this form of secondary neoplasia could resemble the blast crisis, as observed in chronic myeloid leukaemia. PMID- 3842320 TI - Phenotypic attributes of the malignant cell population in Hodgkin's disease indicate a monocyte/macrophage origin. AB - The cellular origin of the malignant cells in Hodgkin's disease (HD) has been discussed for several decades. Previous investigations on fresh biopsy material and cultured cells from lesions of Hodgkin's disease have led to various suggestions such as a T lymphocyte, B lymphocyte or monocyte/macrophage origin of HD cells. However, all these studies have been hampered by uncertainty in the identification of the truly malignant cells. It has therefore been desirable to establish in vitro lines of the malignant cell population in HD. A number of cell lines from HD lesions has been described, but most of these studies can, upon a critical appraisal, be dismissed as not being representative for Hodgkin's and Reed-Sternberg cells. We report on the phenotypes of established cell lines of Hodgkin's cells and conclude that it is most likely that the malignant Hodgkin's cells are derived from cells of the monocyte/macrophage lineage. PMID- 3842321 TI - Hodgkin's disease: successful dissemination of high technology treatment throughout the United States. AB - In the 1950s and 1960s, concepts of the curability of Hodgkin's disease were changing due to a better understanding of the natural history of the disease and major technical innovations for evaluating the extent of disease and treating it with radiation therapy. The Patterns of Care Study in the United States of national practice and of selected referral centres has been analysed to determine the extent of the adoption or dissemination of our concepts of best current management into the United States practice as a whole. A favourable overall level of compliance has been noted, while the National Cancer Institute-funded Cancer Centers and Radiation Therapy Oncology Group (RTOG) facilities show the best process compliance. University facilities, large practices and full-time practitioners consistently outperform their counterparts in community practices, small practices and part-time practices. Despite these generalizations, we have observed poorly performing facilities in all strata of practice that require that the quality be assessed on an individual facility basis. PMID- 3842322 TI - Coronary arteriography: indications, techniques, and morbidity. AB - Coronary arteriography has evolved into a relatively safe and simple procedure, yielding important information about the patient with clinical manifestations of coronary heart disease. The clear trend is to employ arteriography earlier and more frequently in the evaluation. The major therapeutic modality dependent on arteriography at present is bypass surgery, but transluminal angioplasty is rapidly developing and will probably be applicable to an expanding portion of patients. Even newer is thrombolysis in acute myocardial infarction with its promise of limiting myocardial damage in that setting. PMID- 3842323 TI - Invasive cardiology. PMID- 3842324 TI - Thrombolysis in acute myocardial infarction. PMID- 3842325 TI - Evaluation of myocardial function by invasive methods. AB - The evaluation of myocardial performance requires an understanding of the contributions of loading conditions (preload and afterload), heart rate, and contractility. Although the measurement of these parameters often requires specialized techniques, more easily performed invasive evaluation can take place applying the principles derived from an understanding of the factors affecting cardiac performance. The construction of ventricular function curves permits the evaluation of the influence of preload on the work of the heart. Changes in afterload and/or myocardial contractility can produce a series of such function curves. Construction of pressure-volume loops and the examination of end-systolic pressure-volume relationships offer insights into the status of myocardial contractility apart from loading conditions, as well as into the response of the heart to acute and chronic alteration in loading conditions. Ventricular function curves can be obtained during exercise, pacing, and pharmacologic intervention in order to detect subtle cardiac dysfunction, to assess the severity of dysfunction, and to gauge the response to therapy. PMID- 3842327 TI - Electrophysiologic study in supraventricular arrhythmias. PMID- 3842326 TI - The angiographic spectrum of coronary artery disease. AB - A wide spectrum of coronary arteriographic anatomic findings exists in patients presenting with clinically stable and unstable angina pectoris. Although some generalizations about the clinical-angiographic correlations can be made, we are continuously reminded of the frequent individual patient whose findings fall well outside of these generalizations. The majority of patients will have double- or triple-vessel coronary disease, with approximately 10 percent having in addition a left main coronary artery stenosis of at least 50 percent luminal diameter narrowing. Patients with unstable angina tend to have slightly greater vessel involvement in terms of lesion severity, though major differences, in general, are not seen. Intracoronary thrombus is present more frequently in patients with unstable angina and in those with recent myocardial infarction, though the overall incidence of this finding is low. Knowledge of the anatomic extent of coronary atherosclerosis is useful for determining prognosis and for selection from an ever-increasing variety of medical and surgical treatment options. Cardiac imaging is a continuously evolving field with new techniques such as digital angiography, three-dimensional dynamic imaging (dynamic spatial reconstructor), and nuclear magnetic resonance undergoing preclinical or clinical evaluation. These modalities hold promise for ultimately evaluating the coronary vessels from unlimited angles, assessing regional transmural myocardial perfusion and the cellular metabolic consequences of ischemia. However, current therapies (bypass surgery or coronary angioplasty) are based upon modifications of major epicardial coronary anatomy, and techniques that adequately define this anatomy are required. Moreover, for imaging data to have prognostic application, it must have previously established clinical prognostic correlates and be broadly applicable or widely available for patients. Thus for the present and immediate foreseeable future, coronary angiography will be the primary method for establishing the anatomic abnormalities of the coronary arteries, and these angiographic studies will remain vital for the clinical management of ischemic heart disease. PMID- 3842328 TI - Ventricular arrhythmia induction study. PMID- 3842329 TI - Physiologic temporary pacing: techniques and indications. PMID- 3842330 TI - Bedside hemodynamic monitoring in the cardiac care unit. AB - Bedside hemodynamic monitoring provides useful information regarding the differential diagnosis of the various pathologic mechanisms of low output syndrome. It also allows recognition of hemodynamic subsets of patients with acute myocardial infarction. Furthermore, hemodynamic monitoring is necessary for prompt evaluation of the response to therapeutic interventions in patients with low output syndrome. In patients with acute myocardial infarction, hemodynamic indices can also be used for evaluation of immediate prognosis. Because bedside hemodynamic monitoring is relatively safe, and with proper precautionary measures the potential complications can be avoided, hemodynamic monitoring should be considered in the management of all critically ill cardiac patients. PMID- 3842331 TI - Pericardiocentesis using echocardiography. AB - Echocardiography is the procedure of choice for the detection and localization of pericardial effusion. It should be performed in all patients prior to elective pericardiocentesis to confirm the diagnosis and to determine the size and location of the effusion in order to minimize the risk and to maximize the yield of pericardiocentesis. When pericardial tamponade is suspected, echocardiography should be performed, time permitting, to document the presence of effusion, because other clinical entities, such as right ventricular failure, may mimic tamponade. Additionally, the finding of diastolic posterior motion of the right ventricular wall, or "diastolic collapse" of the right ventricle, is further evidence for the presence of tamponade and, at times, may eliminate the need for invasive hemodynamic diagnosis. Echocardiography is also useful when performed during pericardiocentesis, to evaluate the size and location of the effusion as the procedure progresses. Contrast echocardiography can determine the position of the pericardiocentesis needle quickly and safely. Thus the appropriate use of echocardiography has increased the safety and improved the yield of diagnostic and therapeutic pericardiocentesis. PMID- 3842332 TI - Angiographic findings after acute myocardial infarction. PMID- 3842333 TI - Clinical biochemistry nearer the patient. PMID- 3842334 TI - Medical biosensors. PMID- 3842335 TI - Ion-selective electrode technology: an overview. AB - Diluting a sample before analysis, as is required by both flame photometry and indirect reading ISE analysers, gives less relevant analytical results than measuring an undiluted sample directly. This is because dilution masks the impact that protein and lipids exert on the true activity of an ion in a clinical sample. Measuring a sample directly without dilution enables only those ions which are not bound to other materials, e.g. other ions or proteins, to be detected. The levels of these free ions are more likely to reflect true physiological status than analysis of both free and bound ions. Measuring a sample of whole blood directly without dilution can only be performed accurately if the ISE analyser reference junction is unaffected by changes in haematocrit. Calibrant compositions should be of an ionic strength similar to that of physiological samples. Residual liquid junction potentials between calibrants and samples should be minimised by careful design of the reference electrode. PMID- 3842336 TI - Computers and communications. PMID- 3842337 TI - Clinical testing and quality control. PMID- 3842338 TI - Interference from drugs. PMID- 3842339 TI - Selection and maintenance of equipment. PMID- 3842340 TI - Liability: who carries the can? PMID- 3842341 TI - The possibility of clinical biochemistry nearer the patient in German hospitals. PMID- 3842342 TI - Intensive care unit and operating theatre. PMID- 3842343 TI - Therapeutic drug monitoring. PMID- 3842344 TI - General practitioners' office. PMID- 3842345 TI - Biochemical self-monitoring: promise, practice and problems. PMID- 3842346 TI - The developing countries: primary health care. PMID- 3842348 TI - The acute abdomen and laboratory diagnosis. PMID- 3842347 TI - Distributed technology: managing decentralised clinical biochemistry. PMID- 3842349 TI - Immediacy: speed of response from the point of view of the physician. AB - A study has been carried out to determine the value of some standard biochemical tests in the emergency management of 209 acute medical admissions. Of the 678 emergency tests done, only 17.5 per cent showed abnormal results and of these only 12 per cent were helpful in diagnosis although 66 per cent were of value in treating the patients. The tests were most helpful in treating diabetic patients where the blood-glucose level decided insulin dosage in every patient; the pO2 and pCO2 levels were of value in acute on chronic obstructive airways disease; and the serum electrolytes were helpful in managing dehydration due to vomiting and diarrhoea. The possible reasons for the large number of useless tests carried out in diagnosis of these emergency admissions are discussed, and it is suggested that the most important way of avoiding unnecessary tests is better doctor training both before and after qualification. The place of immediacy of tests in the medical out-patient department is also considered. It is concluded that immediacy is of little value in diagnosing and treating out-patients, but would be helpful in reducing unnecessary return visits. PMID- 3842350 TI - Problems with documentation including the 'blunder' rate. PMID- 3842351 TI - Laboratory-clinician interaction and the interpretation of test results. AB - Medical care has become more complex and dependent on technological innovations such as computerised tomography and laser surgery. The use of computers for diagnostic purposes and the emergency of the field of artificial intelligence as purveyor of the medical data base, have given the practitioners a very large body of data to which they must apply their considerable ability. However, the more methods become sophisticated and technically advanced, the greater the need for close cooperation and sharing of expertise between the various components of the delivery of health services. In this context, the clinical laboratory is an amplification of the physician's senses so that he can 'see', 'hear' and 'feel' at cellular, molecular and atomic levels. This is carried out by optimised use of laboratory capabilities by the clinical biochemist and the physician. The bedside is the meeting point between the clinician and his consultants and the patient. It is here that a decision will be made that will have a profound effect on the health of the patient. The ability of the clinical biochemist to design test strategies, control sample handling and interpret laboratory data, is greatly enhanced by having him at the bedside, in close cooperation with the physician. This relationship between the patient, the physician and the laboratory is seen in Figure 6.2. The physician, even with the most sophisticated and modern bedside instruments, cannot be expected to be an expert in properly evaluating test results. He is an expert in synthesising a large body of expert evidence into diagnosis and treatment of his patient. Refusing to consult the clinical biochemist on the interpretation of laboratory data or receiving non-expert consultation can have serious consequences to the patient. However, the clinical biochemist can only truly provide expert analysis if he is 'near' the patient and can be attuned to his physical as well as his emotional and social state which have a great influence on the interpretation of his physiological status. This latter aspect was extremely well put by Peabody almost 60 years ago and is still correct today. Clinical biochemistry must be 'near' the patient to fully realise its professional status. PMID- 3842352 TI - Solid-phase analytical elements for clinical analysis. AB - The technology of dry reagent chemistries is sufficiently advanced so that analytical elements can be developed for almost any clinical analyte. Each element contains all the reagents and separation steps necessary to conduct an analysis. This provides the user with several advantages. The ability to obtain several analyses from small sample volumes has always been recognised as desirable with neonatal and geriatric patients. With dry reagent chemistries, usually 10 microliters of serum or 30 microliters of whole blood are sufficient per analysis. Hence, a profile of 15 tests can be conducted with 150 microliters of serum. The waste of reconstituted but unused reagents is eliminated. This provides more efficient and cost-effective use of reagents. The reagents are stable and require little storage space. In addition, they are extremely convenient to use and require only a small amount of technical skill. This allows for expansion of clinical analyses into such decentralised settings as the hospital ward, physician's office and even the home. PMID- 3842353 TI - Enzyme electrodes and related technologies. AB - The technical outlook is promising for miniature analytical systems which are internally complex but externally simple. Salient features to be anticipated are: The use of miniature electrodes or other sensors in combination with enzymes or immunological compounds for biochemical specificity. The use of arrays of miniature electrodes or other sensors. Relatively low cost because of adaptation of semiconductor fabrication techniques. The attendant possibility of the devices being disposable. The intimate involvement of real time computation. The use of simultaneous replicate assays, with increased confidence in the accuracy of the assay. Overall, rapid assays. Because of these possibilities, it may be concluded that the technological outlook for conducting clinical chemistry assays nearer the patient is promising. PMID- 3842354 TI - Survivor-victims and crisis care. PMID- 3842355 TI - Follow-up study on the attempted suicides among the elderly in Helsinki in 1973 1979. PMID- 3842356 TI - [Suicide and unemployment]. PMID- 3842357 TI - [Catamnesis of a suicide: death by asphyxiation in a plastic bag under the effect of ether while listening to music]. PMID- 3842358 TI - A systematic and integrated interagency model for providing coordinated and comprehensive suicide prevention services. PMID- 3842359 TI - Psychosocial correlates of suicidal behaviors in an urban population. PMID- 3842360 TI - Depression, suicidal ideation and suicide attempts in 900 adolescents: an analysis. PMID- 3842361 TI - Paracoccidioidomycosis (South American blastomycosis): a report of an imported case previously diagnosed as tuberculosis. AB - A case of paracoccidioidomycosis, previously treated for tuberculosis for two years, is reported. Combined treatment with oral ketoconazole and sulfamethoxypyridazine was successful. The problem of a low index of suspicion among physicians for tropical mycoses, which are very rarely observed in Italy, is discussed. PMID- 3842362 TI - Studies on histoplasmosis farciminosi (epizootic lymphangitis) in Egypt. Isolation of Histoplasma farciminosum from cases of histoplasmosis farciminosi in horses and its morphological characteristics. AB - Isolation of Histoplasma farciminosum from five horses, showing typical signs of histoplasmosis farciminosi (epizootic lymphangitis) was successfully attempted. The mycelial form of H. farciminosum was isolated on Sabouraud dextrose agar enriched with 2.5% glycerol, brain heart infusion (BHI) agar enriched with 10% horse blood and PPLO dextrose glycerol agar. The last medium proved to be the most effective, both for primary isolation and subculturing of the fungus. It was found that on primary isolation, the lag phase of the mycelial form of the fungus was relatively long, involving 4-8 weeks at 25 degrees C. Colonies of the mycelial form of H. farciminosum appeared on subculture as a yellowish, light brown to deep brown, convoluted, waxy, cauliflower-like growth tending to form scant aerial growth. Conversion of the mycelial form to the yeast form of H. farciminosum was successful by subculturing either on BHI agar with 5% blood or on Pine's medium and incubating at 35-37 degrees C. Complete conversion to the yeast form was achieved only after 4-5 repeated serial transfers onto fresh media every 8 days. The yeast colonies were flat, raised, slightly or deeply wrinkled, white to light gray to grayish brown, and were pasty in consistency. PMID- 3842363 TI - [Nutritional status: spectra, mirages, speculations]. PMID- 3842364 TI - [Research and development, the first responsibility of the Secretariat of Health]. PMID- 3842365 TI - [Risk factors according to the established model of cerebrovascular disease in young women]. PMID- 3842366 TI - [Implications of the clinico-pathological types, levels of invasion and maximum thickness of tumors]. PMID- 3842368 TI - [Creativity in medical practice]. PMID- 3842367 TI - [Profile of the research physician]. PMID- 3842369 TI - [The changing profile of the surgeon in Mexico in the last 30 years]. PMID- 3842370 TI - [Health care and medicine]. PMID- 3842371 TI - Effects of succinylcholine and related substances administered into the medial preoptic area on the local EEG, body temperature, heart rate, galvanic skin resistance and biogenic amines. AB - Succinylcholine (Sch) which is a cholinergic neuromuscular blocker has been known to occasionally lead to episodes of malignant hyperthermia in swine and humans. In order to find whether it produces any hyperthermic effects through action on medial preoptic area, experiments were carried on by administering intracerebrally the chemical into the medial preoptic area through an in-dwelling cannula-cum-electrode in the free moving rat. The changes in body temperature and the local EEG were studied. For comparison purpose, the effects of carbachol, atropine and phenylephrine were also studied. Further, in the curarized state of no muscular activity, the effect of SCh on the preoptic area was again tested and also the changes in the other autonomic parameters of heart rate and galvanic skin resistance (GSR) were studied. It was observed that SCh given into preoptic area caused a clear hyperthermic effect. The effect was countered by prior administration of atropine into the site. After SCh the local EEG changed into a high amplitude slow wave format. The heart rate was not altered but the GSR increased by two-fold. Carbachol caused a rise in body temperature, heart rate and also GSR. SCh also caused a reduction in noradrenaline content of the hypothalamus by 23% while no change in dopamine and serotonin occurred. Serotonin increased by 28% in the brainstem with no change in the other amines. Septum showed an increase of noradrenaline and dopamine contents by 40% and 25% respectively. Keeping in view the monoaminergic connections and thermoregulatory role of the preoptic area, one may postulate that SCh could inhibit the warm sensors and the controls of the dual sympathetic mechanism which normally leads to an increase of sudomotor activity and a decrease of vasomotor activity, the inhibition resulting in rise of body temperature. PMID- 3842372 TI - Circadian desynchronization in pulse rate, systolic and diastolic blood pressure, rectal temperature and urine output in traumatic tetraplegics. AB - An investigation was undertaken to study the circadian rhythmicity in pulse rate, systolic and diastolic blood pressure, rectal temperature and urine output in eight traumatic tetraplegics in view of the fact that diurnal rhythmicity in prolactin response to thyrotropin-releasing hormone was absent in such patients. The data, analysed by single cosinor procedure, showed absence of rhythmicity in all five parameters. Analysis of variance also showed no significant difference in these parameters at various time points. Knowledge of the alterations in circadian biology subsequent to cervical spinal cord trauma would provide useful guidelines towards chronotherapy and vocational rehabilitation of tetraplegics besides possible restoration of euchronism by pharmacological means. PMID- 3842373 TI - Effect of steroid hormones and vitamin B6 on age dependent changes in aminotransferases in rat. AB - Experiments have been carried out on liver and Kidneys to study the age dependent changes in alanine and aspartate aminotransferases and the influence of steroid hormones corticosterone (catabolic), testosterone (anabolic) and vitamin B6 on these changes. The rats used were of the ages between 7 to 73 weeks. It is observed that specific activity of alanine aminotransferase as well as the activity per liver increased with age. The same is true with the kidneys. Corticosterone treatment brings about two and half fold increase in activity in the liver of younger rats, whereas there is only 25% increase in the oldest group. Testosterone and vitamin B6 lower this activity, the latter showed more pronounced effect. In the case of kidneys the changes are marginal. Aspartate aminotransferase shows marginal changes in the specific activities in both liver and kidney, whereas the total activity increases with age, except in the case of liver where there is decrease at 73 weeks. Both testosterone and vitamin B6 have marginal influence on the kidney enzyme. There is no apparent explanation for the differential behaviour of the two enzymes. PMID- 3842374 TI - Comparative study of visual and auditory reaction time of hands and feet in males and females. AB - Simple reaction time of hands and feet was studied in normal subjects (47 males, and 17 females) to visual and auditory stimuli using an electric circuit and recording points of stimulus and action on a fast moving kymograph. There are significant differences between reaction times of hands and feet, right side and left side, males and females and between auditory and visual reaction times (ART and VRT). Both VRT and ART were significantly faster in hands. Delayed response of left side (LH and LF), was more marked in feet with ART. On crossing hands, both VRT and ART took more time in RH. Males responded faster than females, difference being significant mainly in ART and that too on left side. ART was slightly faster than VRT. Faster response of right side was probably due to the fact that all the subjects were right handed persons. PMID- 3842375 TI - The effect of vagotomy and hydrocortisone administration on pulmonary surfactant activity in adult albino rats. AB - The role of vagus and hydrocortisone in the regulation of lung surfactant was studied in adult albino rats. Dynamic surface tension and phospholipid content were measured in the lung wash for estimating surfactant activity. The results indicate that vagotomy significantly decreases the surfactant activity whereas hydrocortisone does not alter it. But when hydrocortisone was administered prior to vagotomy it could prevent the decrease in surfactant activity. Thus it is concluded the regulation of lung surfactant in the adult lung is mainly by vagus nerve and hydrocortisone as such has no role but in the absence of vagal regulation hydrocortisone could maintain normal lung surfactant activity. PMID- 3842376 TI - Serum concentration and urinary excretion of ethambutol administered alone and in combination with isoniazid in patients of pulmonary tuberculosis. AB - Ethambutol (20 mg/kg) was administered orally to 10 patients of pulmonary tuberculosis for seven consecutive days at 8 a.m. after over night fast. On 7th day serum levels were measured at 2, 4, 6, 8 and 24 hr intervals and urinary excretion was estimated at 2, 4, 6 and 24 hr following ethambutol administration. Simultaneous administration of isoniazid (300 mg, orally) for next seven days to the same patients significantly raised the serum levels of ethambutol at 4, 6 and 8 hr and the cumulative per cent dose excreted was decreased significantly at 4, 6 and 24 hr. The serum levels and urinary elimination was not significantly different at 2 hr. PMID- 3842378 TI - Effect of prolactin and bromocriptine administration on epididymal function--a biochemical study in rats. AB - The pattern of androgen dependent enzyme activities of epididymis was studied after the administration of prolactin and bromocriptine in albino rats. Prolactin activated the glycogenolysis and hexose mono and diphosphate pathways, which would be essential for sperm maturation. But bromocriptine inhibited these activities of epididymis. Hence role of bromocriptine in decreasing epididymal function has been suggested. PMID- 3842377 TI - Serum protein profile in normal pregnancy and in relation to parity. AB - Forty pregnant females of third trimester and their twenty non-pregnant controls were screened for Hb%, PCV and serum protein differentials in relation to parity. Paper electrophoresis method revealed significant rise in mean levels of serum alpha 1, alpha 2 and beta-globulins in pregnant females as compared to non pregnant controls, which may be due to the rise in pregnancy-associated-proteins. Radial immunodiffusion method revealed rise in mean serum IgM level with increasing parity, whereas a decrease in mean serum IgG level was observed which might be due to the placental membrane-transfer and/or decreased IgG synthesis. Haematological investigations revealed decreased Hb% and PCV which may have been caused both due to increased demand of nutrients as well as by haemodilution, associated with water retention during pregnancy. PMID- 3842379 TI - Influence of divalent cations on rabbit atria and modification of catecholamine response on pacemaker cells. AB - Spontaneously beating isolated atria of rabbits responded to Mn++ and Co++ with a progressively increasing negative chronotropism and inotropism, which was reversible by washout and by elevating the bath concentration of Ca++. The cumulative dose response curve for adrenaline for chronotropic response was markedly shifted to the right in the presence of Mn++ or Co++. This effect was also reversible. Verapamil produced only a moderate decline in spontaneous rate and contractility and did not block the chronotropic response to adrenaline. It is concluded that Mn++ and Co++ block the action of catecholamine on the pacemaker cells and they differ at least in part from organic calcium channel antagonists in their mechanism of action. PMID- 3842380 TI - Designing of a brain stimulator suitable for intracranial self-stimulation experiments for studying the brain-stimulation reward system. AB - A circuit design has been developed and described for fabricating and using in the intracranial self-stimulation experiments on rat to study the brain stimulation reward behaviour, and to explore into the underlying mechanisms of drives and motivated behaviours. The stimulator can be fabricated with parts available in India. It has been continuously used and tested during the last four years in different research studies. PMID- 3842381 TI - Effect of metronidazole on the hepatic mixed function oxygenases (cytochromes b5 and P-450) in Swiss mice. AB - Effect of metronidazole (MNZ) treatment (oral and ip) on activities of cytochrome b5 and P-450 was studied in male, virgin and pregnant female mice. Activities of both the cytochromes increased in virgin mice treated with 2 mg (ip or PO, per mouse) but not in male and pregnant females. 30 mg dose (per mouse) was toxic in pregnant mice but increased the cytochromes activities in males and virgin females. HPLC analysis of liver MNZ levels showed that virgin females had higher MNZ content than male and pregnant females when treated with ip injection of MNZ (250 mg/kg). PMID- 3842382 TI - Changes in brain cholesterol and its regional distribution under the influence of prednisolone. AB - Male albino rats were studied for effect of prednisolone on brain cholesterol and water content. Oral administration of prednisolone (5 mg/kg rat/day for 21 days) results in reduction of brain weight and brain cholesterol content but no change in brain water content was seen. The reduction of cholesterol may be the cause of disorders found in neural functions in conditions of glucocorticoid excess. PMID- 3842383 TI - Plasma and tissue zinc in type 2 (non-insulin-dependent) diabetes mellitus. PMID- 3842384 TI - Evaluation of birth registration accuracy in Egypt. PMID- 3842385 TI - Nutritional status of preschool children attending day care centres in Riyadh Saudi Arabia. PMID- 3842386 TI - Oxalate content of some common Egyptian food stuffs. PMID- 3842387 TI - Mesophilic aerobic organisms and certain pathogens associated with raw and cooked meat. PMID- 3842388 TI - Mesophilic aerobic organisms and certain pathogens associated with raw and cooked poultry. PMID- 3842389 TI - Mesophilic aerobic organisms and certain pathogens associated with raw and cooked vegetables. PMID- 3842390 TI - Microbiological profile of some miscellaneous foods. PMID- 3842391 TI - Cysteamine-induced duodenal ulcer is not site-specific: effect of local modulating factors. AB - In cysteamine-induced duodenal ulcer, an animal model for the clinical disease, lesions are characteristically produced on the anterior and posterior walls of the proximal duodenum. Using this model, we investigated factors that may affect duodenal ulcer localization and intensity. Mobilization of the gastroduodenum by severing its ligaments; circumscribed application of acetic acid to the serosa of the lateral wall of the duodenum; or placement of materials (e.g., gelfoam, parafilm) on the proximal duodenum, each decreased the intensity of anterior posterior ulcers and resulted in formation of atypical, mostly distal duodenal ulcers. The effect of these manipulations on acid secretion suggests that their influence on the development of duodenal ulcer is not entirely due to modulation of gastric secretion. The data indicate that the localization of induced duodenal ulcer can be shifted distally and is therefore not site specific. This study provides new clues and techniques for the study of the pathogenesis of duodenal ulcer disease. PMID- 3842392 TI - Alterations in guinea pig hepatocytes exposed to chlorinated hydrocarbons: membrane proliferation and excretion. AB - Polychlorinated aromatic hydrocarbons are a widespread, extremely toxic group of environmental pollutants. A fine soot containing a mixture of these compounds contaminated an office building after a fire involving an electric service transformer and its polychlorinated biphenyl (PCB) containing cooling fluid. The soot was found to contain polychlorinated dibenzo-p-dioxins (PCDD), and dibenzofurans (PCDF). Guinea pigs fed this soot develop steatosis and smooth endoplasmic reticulum (SER) proliferation as major hepatocyte alterations. The proliferated SER is associated with cytoplasmic vacuoles and laminated concentric membrane arrays (CMAs) usually associated with lipid. High-voltage electron microscopy examination of serial 0.25 micron sections revealed an occasional vacuole communicating directly with either a sinusoid or bile canaliculus. This channel provided a pathway for the ejection of membrane sheets and condensed fragments which shed from the luminal surface of the vacuoles. In addition, membrane sheets from the CMAs and proliferated SER were also ejected into the vacuoles. This resulted in continuity from the hepatocyte cytoplasm to the sinusoids and bile canaliculi via the vacuoles. Membrane sheets were also shed directly from the luminal surface of the bile canaliculi. Numerous membrane sheets and condensed fragments were found in the sinusoids, bile canaliculi and ducts. These morphologic observations elaborate a mechanism of direct and indirect membrane ejection from the hepatocyte into the blood and bile spaces and may explain the origin of reported elevated serum bilirubin and cholesterol levels. Since these PCDDs and PCDFs are excreted primarily via the bile, this ejection mechanism may be important in the detoxification process. PMID- 3842393 TI - Effect of phenytoin and/or beta-aminoproprionitrile on a surgically induced periosteal wound. AB - Phenytoin has a beneficial effect on wound healing and on the healing of bone fractures, while beta-aminopropionitrile (BAPN) has an adverse effect on both. BAPN causes what appears to be a repair response in the periosteum at sites of muscle attachment, but phenytoin does not alter that response. The effect of phenytoin and/or BAPN on the repair of a surgically induced periosteal wound at the insertion of the adductor longus and pectineus muscles was studied in rats at 7 days post-wounding. Phenytoin facilitated and BAPN exacerbated the repair process, as indicated by the size of the periosteal response. Phenytoin increased the percentage of bone present in the responses, and both phenytoin and BAPN reduced the amount of cartilage present. The possible role of inflammation in obtaining the beneficial effects of phenytoin in wound healing is discussed. PMID- 3842394 TI - Pathogenicity of retroviruses containing either the normal human c-Ha-ras1 gene or its mutated form derived from the bladder carcinoma EJ/T24 cell line. AB - Cellular ras oncogenes transduced by retroviruses carry mutations in amino acids 12, 59 and 122. Similar mutations have been observed in ras oncogenes activated during induction of neoplasia in both humans and experimental animals. The unmutated normal rat or human c-Ha-ras-1 genes have the ability to transform NIH 3T3 cells in culture when activated by a RNA synthesis promoter. These findings raise the question of whether the mutations are necessary for the ras oncogenes to induce the neoplastic phenotype in vivo. To address this question, we inserted the normal human c-Ha-ras-1 or its mutated counterpart EJ/T24 bladder carcinoma oncogene independently into a retrovirus vector derived from the M1 strain of Moloney murine sarcoma virus (MoMuSV). Both recombinant clones induced foci of transformed cells in an NIH 3T3 cell transfection assay. Infectious virus particles were rescued from cloned transformants carrying a single copy of the integrated provirus using the nonpathogenic amphotrophic wild mouse leukemia virus (WMLV) as helper. The pseudotypes rescued from the EJ/T24-containing transformants had higher titers than the normal c-Ha-ras-1 pseudotypes as determined by a focus assay and gave rise to larger and earlier detected foci upon infection of NIH 3T3 cells. The two pseudotypes were tested for in vivo pathogenicity by inoculation into newborn NFS mice and were compared to the pseudotype WMLV/Harvey murine sarcoma virus (HaMuSV) (positive control) and WMLV (negative control). While the WMLV/EJ/T24 and the WMLV/HaMuSV pseudotypes induced erythroleukemias and sarcomas with a latency period of 6-9 weeks, the WMLV/c-Ha ras-1 pseudotype induced only mild splenomegaly. As expected the WMLV negative control induced no pathology. Tumor-bearing animals that were not euthanized at 6 9 weeks died within 2-3 months following virus inoculation. PMID- 3842395 TI - [Cutaneous argyrosis. An electron microscopic study of the shape, structure and composition of argyrothiosomes (monoclinic grains of silver sulfide]. PMID- 3842396 TI - [Current classification of antidotes and chelators in human toxicology]. PMID- 3842397 TI - [A new method for identifying the epidural space--counting-drops-of-micro-drip method]. PMID- 3842398 TI - Ranitidine as an antacid in elective cesarean delivery and its placenta transfer- a preliminary report. PMID- 3842399 TI - [Compare the influence of blood pressure and heart rate response to laryngoscopy and tracheal intubation with lidocaine and fentanyl]. PMID- 3842400 TI - Facilitation of rapid endotracheal intubation and neuromuscular effect with priming dose of atracurium in pediatrics. PMID- 3842401 TI - Epidural nalbuphine hydrochloride in painless labour. PMID- 3842402 TI - Pulmonary embolism during general anaesthesia. PMID- 3842404 TI - Attenuation of circulatory response to laryngoscopy and tracheal intubation--a comparative study of different low doses of fentanyl with or without additional lidocaine in various regimens. PMID- 3842403 TI - [Effects of physostigmine on the loss of consciousness induced by i.v. thiopentone and ketamine in man]. PMID- 3842405 TI - [Anesthetic scavenging systems]. PMID- 3842406 TI - [Clinical experience of continuous epidural anesthesia]. PMID- 3842407 TI - [Non-pharmacologic management of perioperative episode of P.S.V.T]. PMID- 3842408 TI - Minimal hepatic and renal function changes after isoflurane anesthesia. PMID- 3842409 TI - Epidural butorphanol tartrate in painless labour. PMID- 3842410 TI - [Safety and efficacy of low dose intrathecal morphine]. PMID- 3842411 TI - Subarachnoid administration of butorphanol for the relief of postoperative pain. PMID- 3842412 TI - The causes of chronic orthostatic hypotension. PMID- 3842413 TI - [Spinal anesthesia with isobaric bupivacaine--clinical effects of different directions and speeds of injection]. PMID- 3842414 TI - [Profound hypothermia with total circulatory arrest in cardiac anesthesia]. PMID- 3842415 TI - [Clinical study of low-flow anesthesia with isoflurane. I. Cardiovascular effects of isoflurane in low-flow anesthesia]. PMID- 3842416 TI - Anesthesia for amyotonia congenita. A case report. PMID- 3842417 TI - [The influence of succinylcholine by pre-treatment with pancuronium, tubocurarine and atracurium]. PMID- 3842418 TI - [Comparison of hyperbaric and isobaric bupivacaine for spinal anesthesia]. PMID- 3842419 TI - [Mixture of carbostesin 0.25% & tetocaine 0.5% for spinal anaesthesia]. PMID- 3842420 TI - [Clinical experience of continuous high abdominal epidural anesthesia]. PMID- 3842421 TI - Protamine anaphylaxis--a case report and review of literature. PMID- 3842422 TI - Spontaneous mediastinal emphysema and cervical emphysema after smooth endotracheal anesthesia: a case report. PMID- 3842423 TI - Radionuclide detection of biliary atresia. Illustration of a structural method to guide test evaluation. AB - This paper illustrates the conceptual framework for test evaluation developed in the preceding paper. Reanalysis of published data, guided by this framework, contradicts preliminary conclusions about the limited statistical discrimination of a radionuclide scan to discriminate neonatal hepatitis from biliary atresia. It also clarifies the need in future evaluations to consider a number of factors not mentioned in many previous studies. PMID- 3842424 TI - The superiority of sequential over simultaneous testing. AB - Diagnostic tests are typically used to help the physician select among available management options. When two or more tests are available, using them sequentially is potentially more efficient than simultaneously performing multiple tests, in that the former approach may allow the physician to perform fewer tests. In particular, we demonstrate that if two common conditions are met, any simultaneous strategy involving at least as many tests as management options can be replaced by a sequential strategy with the same outcome and a smaller expected number of tests. It follows that, in many clinical situations in which the benefits of performing fewer tests outweigh the costs that may result from delaying diagnosis, simultaneous strategies cannot be optimal. This result can decrease the number of diagnostic strategies that the physician or decision analyst needs to consider. PMID- 3842427 TI - Selecting a display monitor. PMID- 3842425 TI - Eliciting preferences for alternative cancer drug treatments. The influence of framing, medium, and rater variables. AB - In oncology there is increasing interest in the development of techniques to help patients choose between alternative therapies in ways that are consistent with their preferences. The purpose of this study was to examine some methodological problems associated with the elicitation of preferences. Preferences for alternative drug therapies were sought from 208 visitors to an open house at the Ontario Cancer Institute and from 216 university nursing students. Preferences were not significantly dependent on the sex, age or professional status of the respondents, nor on the medium used for elicitation of preferences (computer terminal versus pencil-and-paper questionnaire). In contrast, the importance of the way decision problems are framed was confirmed. Comparison of a positive frame (outcomes expressed as the probability of surviving) with a negative frame (outcomes expressed as the probability of dying) and a mixed frame (probabilities of surviving and dying were both given) pointed to the presence or absence of the word "survive" in the outcome description as the main source of framing bias. The framing effect was in the opposite direction to that hypothesized. PMID- 3842426 TI - Fisher's Exact Test: an easy-to-use statistical test for comparing outcomes. PMID- 3842428 TI - An introduction to computer-assisted medical decision making. I. PMID- 3842429 TI - Ambulatory ECG monitoring: real-time analysis versus tape scanning systems. PMID- 3842431 TI - An introduction to Lisp. PMID- 3842430 TI - Medaccount: a medical accounting package. PMID- 3842432 TI - Psychological aspects of computer use. PMID- 3842433 TI - Fine-tuning a Fortran subroutine. PMID- 3842435 TI - Judging visual displays of medical information. PMID- 3842434 TI - Error control in medical data. PMID- 3842436 TI - Computers in psychiatry. PMID- 3842437 TI - The physician's role in selecting hospital computers. PMID- 3842439 TI - Programming languages. II. PMID- 3842438 TI - Magnetic resonance: the second revolution in computer-based imaging. PMID- 3842441 TI - DisplayWrite 2. PMID- 3842442 TI - Using spreadsheet programs in pediatrics. PMID- 3842440 TI - Doctor's Office Manager: an IBM billing package. PMID- 3842444 TI - Optical storage media for medical records and literature. PMID- 3842443 TI - Users' reactions to three personal computers. PMID- 3842445 TI - Emergi-dos. PMID- 3842446 TI - Word processing, phase III. PMID- 3842448 TI - Appointment scheduling. PMID- 3842447 TI - An introduction to computer-assisted medical decision making. II. PMID- 3842449 TI - Sizing your office computer. PMID- 3842450 TI - The physician's personal workstation. PMID- 3842451 TI - Computers in ophthalmology. PMID- 3842452 TI - Computerized clinical decision aids. PMID- 3842453 TI - Programming languages III. PMID- 3842454 TI - National standards for laboratory data exchange: the next chapter. PMID- 3842455 TI - A computer program for calculating fluid maintenance requirements. PMID- 3842456 TI - [Hepatitis B virus in a hemodialysis unit]. PMID- 3842457 TI - Spinal reflex activity in patients with Duchenne, Limb-Girdle and myotonic muscular dystrophies. PMID- 3842458 TI - Characterization of plasma cell subsets in thyroid disease. PMID- 3842459 TI - [Nutritional status with regard to vitamin A in a university student population of Buenos Aires]. PMID- 3842460 TI - [Effect of vinblastine on bile secretion and hepatic ultrastructure in rats]. PMID- 3842461 TI - [Serum and platelet ascorbic acid levels in patients with hemoglobinopathies]. PMID- 3842463 TI - [Spontaneous pneumothorax in a man with rheumatoid arthritis]. PMID- 3842462 TI - [Paradoxical response to verapamil. Acceleration of paroxysmal supraventricular tachycardia]. PMID- 3842464 TI - [Computerized tomography of the thorax]. PMID- 3842465 TI - [Apropos of the editorial on the vertebrobasilar syndromes]. PMID- 3842466 TI - [Controversy about the H2 blocking action of 1 nocturnal dose of cimetidine in gastric hyperacidity]. PMID- 3842467 TI - [Reye's syndrome]. PMID- 3842468 TI - [Influence of certain molecules on the partial renewal of platelet phospholipids in Aymaras, Quechuas and European populations]. PMID- 3842469 TI - [Renal function in uninephrectomized patients]. PMID- 3842470 TI - [7 cases of intracranial tuberculoma]. PMID- 3842471 TI - [Campylobacter jejuni enteric infections in Rosario]. PMID- 3842472 TI - [Circulating red cell mass and growth velocity during recovery from severe protein deficiency in rats]. PMID- 3842473 TI - [Proptosis and cancer of the colon]. PMID- 3842474 TI - [Therapy of Argentinian hemorrhagic fever]. PMID- 3842475 TI - Scanning electron microscopy: observations of influenza virus adsorption on erythrocytes. PMID- 3842476 TI - Development of the effect of an indifferentiated tumour extract on sinusoid littoral cells of young growing liver. PMID- 3842477 TI - Contact between trophoblast and antimesometrial decidual cells in the mouse. PMID- 3842478 TI - Ultrastructure of the mitotic nucleus in Leishmania mexicana sp. tridimensional reconstruction of the mitotic spindle and dense plaques. PMID- 3842479 TI - Ultrastructural study of the effect of progesterone on mouse fibroblasts in vitro. PMID- 3842480 TI - The cytoskeleton of resident peritoneal mouse macrophages. PMID- 3842481 TI - Langerhans cell interrelationships in normal human cervico-vaginal epithelium. PMID- 3842482 TI - Late effects of use of nuclear and certain chemical weapons in man. PMID- 3842483 TI - Chemical warfare: the present position. PMID- 3842484 TI - Nuclear weapons and nuclear power stations: what is the connection? PMID- 3842485 TI - The nuclear imperative. The Crookshank lecture, 1984. PMID- 3842486 TI - The Pugwash Conferences on science and world affairs. PMID- 3842487 TI - Planning for persuasion. PMID- 3842488 TI - First Committee of the UN General Assembly, 17 October 1984. PMID- 3842489 TI - Nuclear war: lessons from disaster. PMID- 3842490 TI - Civil defence in a nuclear disaster. PMID- 3842492 TI - Civil defence in the USA. PMID- 3842491 TI - Civil defence in the United Kingdom. PMID- 3842493 TI - The nuclear threat: when it hurts to think. PMID- 3842494 TI - A biosocial perspective of peace and war. PMID- 3842495 TI - SIPRI. Stockholm International Peace Research Institute. PMID- 3842496 TI - The failure of blind faith. PMID- 3842498 TI - 'By what right do they decide the fate of all humanity'. PMID- 3842497 TI - Around Parliament. PMID- 3842499 TI - 'Denial' and 'dissociation' of danger, and 'nuclear winter'. PMID- 3842500 TI - Health and the arms race. PMID- 3842501 TI - The development of the physicians' peace movements. PMID- 3842502 TI - Irresponsible responsibility. PMID- 3842503 TI - Doctors, nuclear war, and a town like Alice. PMID- 3842504 TI - The recovery of trust. PMID- 3842505 TI - World population perspectives 1985. PMID- 3842506 TI - The myth of rationality in situations of crisis. PMID- 3842507 TI - The International Physicians' movement in West Germany. PMID- 3842508 TI - The sociobiology of war. PMID- 3842509 TI - Co-operation not confrontation: imperative of the nuclear age. Report on the Fifth Congress of International Physicians for the Prevention of Nuclear War. PMID- 3842510 TI - The International Institute for Peace, Vienna. PMID- 3842511 TI - There is hope. PMID- 3842512 TI - Groundwork for lobbying. PMID- 3842513 TI - 'Peace and development are inseparable'. PMID- 3842514 TI - The renaissance of the state psychiatric system. PMID- 3842516 TI - Public psychiatry: the road to revitalization. PMID- 3842515 TI - Deinstitutionalization in retrospect. PMID- 3842517 TI - University/state collaboration. AB - This article will be based on experience in New York State and the generalizability of that experience is something that each of you will have to determine in terms of the issues relevant to where you work. PMID- 3842518 TI - Increasing utilization of day hospitals. PMID- 3842520 TI - State's role in funding psychiatric care. PMID- 3842519 TI - Psychiatric research: the role of the state. AB - Psychiatric research is as exciting as any field in health science today. But it will require support from a variety of sources if it is to achieve its potential. Two main points bear emphasizing in any overview of current mental health research. First, of course, is the vitality and significance of the work itself, and second is the multifaceted issue of support. This presentation will review briefly the various component parts on which this country's mental health research establishment is based: funding from the federal government; the crucial role of the individual state; and contributions of various other sections of our society to the overall research effort. This overview will also consider some of the secondary results of research support within the state. PMID- 3842521 TI - Civil commitment reform: context and consequences. AB - Laws and policies governing the care and treatment of the mentally ill are in part shaped by the sociopolitical climate in which they are formulated, and their outcomes are similarly shaped by the context in which they occur. Civil commitment laws were narrowed in a liberal era but later broadened in response both to the outcome of the initial reform and the trend toward social and fiscal conservatism which emerged in the late 1970s and 1980s. This study, which reports on the evolution of commitment law in the state of Washington, indicates that while recent changes in these laws mandate greater use of state hospitals, the retention of the procedural safeguards set in place by the initial reform coupled with limitations on resources available to state mental health systems will prevent a return to the state hospital as it appeared prior to the deinstitutionalization movement. These factors may promote the search for non institutional alternatives, such as efforts underway in Washington and elsewhere to implement civil commitment of community-based services. PMID- 3842523 TI - [Cancer of the ovary. Role of diaphragmatic lymphatic block in the mechanism of ascites production: studies by scintigraphy]. PMID- 3842522 TI - The role of the state hospital: a new mandate for a new era. AB - We are fast approaching a centennial of New York State's institutional system, the anniversary of the State Care Act of 1980. This can be evaluated against another important anniversary; the quarter century mark of the current convulsion/revolution of the mental hygiene care system of the entire United States, commonly referred to as deinstitutionalization. The state institutions, which for the past century were built up and maintained as the major locus of care for the chronically mentally ill, no longer occupy that central place in many localities. Yet these hospitals must continue to struggle with overwhelming burdens. Their inpatient populations, although now much smaller, still include many seriously mentally ill patients as well as the essentially non-dischargeable elderly. In addition, they must provide for young adults with a new profile of difficult behavior and challenging demands. This article is an attempt to redefine the role of the state institution in what has become the new era of community care, and to suggest fruitful new directions for the future which incorporate a contemporary shift in focus: from the concept of illness to that of disability, and from a reliance on a facility or specific program to the development of a comprehensive and integrated system of treatment and support services. PMID- 3842524 TI - [Interval from the electrocardiogram R wave to the peak of the first lead of the apexcardiogram: correlations with the echocardiogram]. PMID- 3842525 TI - [Total right branch block associated with left anterior hemiblock]. PMID- 3842526 TI - [Personal experience in the pathology of the pancreas using computed tomography]. PMID- 3842527 TI - [Incidence of acute gastroduodenal lesions in patients with intracranial lesions. Prophylactic value of treatment with ranitidine]. PMID- 3842528 TI - [Bacteriological diagnosis in the patient with a bladder probe]. PMID- 3842529 TI - [Medical residency in infectology: 16 years later]. PMID- 3842530 TI - [Fever: its significance in bacterial meningitis]. PMID- 3842531 TI - [Scintigraphy with gallium 67 in the diagnosis of cancer of the lung]. PMID- 3842532 TI - [Correlation between autopsies and death certificates]. PMID- 3842533 TI - [Cholestyramine in the treatment of severe diarrhea and diarrhea of the diabetic patient]. PMID- 3842534 TI - [Statistics of diabetic patients hospitalized in Cordoba Hospital]. PMID- 3842535 TI - [A simple method for measuring the thickness of cutaneous melanomas]. PMID- 3842536 TI - [Maxillofacial hydatidosis]. PMID- 3842537 TI - [Hydatidosis and cancer of the breast. Report of a case of uncommon association]. PMID- 3842538 TI - [Chronic ulcerations of the small intestine. Report of a case]. PMID- 3842539 TI - [Pre-eclampsia--detachment of the normal placenta and retinal detachment]. PMID- 3842540 TI - [Pyramidal and extrapyramidal motor systems. Physiology and physiopathology]. PMID- 3842541 TI - [Evaluation of methods for the study of gastroesophageal reflux]. PMID- 3842542 TI - The Massachusetts Blood Pressure Study, Part 1. Elevated levels of sodium in drinking water and blood pressure levels in children. AB - Continuing epidemiologic studies at the University of Massachusetts have examined the hypothesis that elevated levels of sodium (Na) in drinking water contribute to elevations of blood pressure (BP). Comparing tenth graders from a town with 107 mg Na/L in the drinking water to those from a town with 8 mg Na/L revealed statistically significant and medically important higher BP distributions among the high Na town students relative to their low Na town peers for both systolic and diastolic BP in both boys and girls. The differences were upheld when potentially confounding factors, including dietary Na intake and other water factors occurring differentially in the two water supplies, were controlled in the analysis. A replication study among third graders in the same communities showed similar results. PMID- 3842543 TI - The Massachusetts Blood Pressure Study, Part 2. Modestly elevated levels of sodium in drinking water and blood pressure levels in high school students. AB - The blood pressure (BP) of tenth grade students from a town with 42 mg Na/L in drinking water was compared to that of comparable tenth grade students in a geographically contiguous community with 6 mg Na/L. No statistically significant difference occurred in mean BP between the two communities for males and females for diastolic BP and male systolic BP. However, the low sodium community females displayed a significantly higher BP (p less than 0.05) of 1.6 mmHg. Analysis of covariance for potentially confounding variables did not significantly alter the initial findings. In summary, an average of 36 mg Na/L higher Na levels in the drinking water was not associated with an increase in BP levels in tenth grade students. PMID- 3842544 TI - The Massachusetts Blood Pressure Study, Part 3. Experimental reduction of sodium in drinking water: effects on blood pressure. AB - An experimental bottled water study assessed the effect on blood pressure of lowering Na concentration in the water of some of the high sodium community fourth graders. For three months, trios of children matched by sex, school, and baseline BP each used different water for all cooking and drinking purposes, with BP monitored bi-weekly. Pupils were randomly allocated to the three water conditions: high sodium water bottled from their own community distribution system, low sodium water bottled from the distribution system of the comparison community with sodium added to the level of the high sodium community water and low sodium water bottled from the distribution system of the low sodium community but with no sodium added. The results indicate that BP levels among the girls but not boys on the low sodium water exhibited marked decreases in BP over the test period when compared to the other two groups. PMID- 3842545 TI - The Massachusetts Blood Pressure Study, Part 4. Modest sodium supplementation and blood pressure change in boarding school girls. AB - Based upon the results of the earlier work, a sodium supplement study was designed and carried out at a private boarding school. Two hundred and sixteen 9th-12th grade girls were randomly assigned to one of three groups while continuing to eat their regular meals at the dining commons. All participating students took two capsules, under supervision, both mid-morning and subsequent to the evening meal. One group received placebos at both times, one group received 2 G of salt in the morning and a placebo in the evening, and the final group received a placebo in the morning and 2 G of salt in the evening. One week of baseline data and eight weeks of follow-up data were collected twice weekly for BP, pulse, 24-hour urine specimen, and stress of daily events. Repeated measures analysis of variance failed to detect a significant difference in change in systolic and diastolic BP between groups. Extensive analysis of other variables did not uncover any negative confounding or interaction. Drop out rates were very low and compliance rates very high. The urinalysis clearly demonstrated that the Na excretion in the two supplement groups was similar and significantly elevated over the placebo group, thus documenting the high Na supplement compliance rates. PMID- 3842547 TI - Sodium bisulfite protects against radiogenic and chemically induced transformation in hamster embryo and mouse C3H/10T-1/2 cells. AB - Pretreatment of hamster embryo cells or mouse C3H/10T-1/2 cells with sodium bisulfite (0.5, 2.5, 5.0 and 100 ppm) inhibits the oncogenic transformation of the cells following their exposure to x-rays or benzo(a)pyrene. The results suggest that low doses of bisulfite, a widely used food additive, can serve as a radioprotective and chemopreventive agent with anticarcinogenic potential. PMID- 3842546 TI - Elution of polycyclic aromatic hydrocarbons from carbon blacks into biomembranes in vitro. AB - Elution of endogenous polycyclic aromatic hydrocarbons (PAH) from four carbon blacks into biomembranes was investigated in vitro. Membrane systems employed were phospholipid vesicles composed of dimyristoyl phosphatidylcholine (DMPC), rat lung homogenate, and simulated lung surfactant. Amounts of benzo[a]-pyrene which were eluted from carbon blacks were not dependent on the type of membrane, but elution was dependent on the type of carbon black. Elution of B[a]P was detected from only 2 of the carbon blacks and amounts eluted represented only 0.2% to 0.6% of total B[a]P associated with those carbon blacks. The largest amount of B[a]P was eluted from the carbon black with lowest surface area and highest endogenous B[a]P content. Benzo[ghi]perylene also was eluted from carbon blacks though amounts eluted again represented extremely small fractions (0.1 0.2%) of the total on the particles. From these experiments, it appears that only very small quantities of B[a]P and other PAH on carbon blacks are bioavailable. PMID- 3842548 TI - Erythrocyte glucose-6-phosphate dehydrogenase deficiency does not pose an increased risk for black Americans exposed to oxidant gases in the workplace or general environment. PMID- 3842549 TI - Characterization of thymidine kinase in L5178Y mouse lymphoma cells. AB - Thymidine kinase (TK) was isolated from four different cell lines (TK +/+ P4, TK +/- P4.3.4, TK +/- 3.7.2C, and TK -/- P4.3) that represent the genotypes of L5178Y mouse lymphoma cells. TK isolated from each of the different cell lines was characterized with respect to the estimated isoelectric point (pI), temperature sensitivity, estimated substrate dissociation constants (Km), estimated inhibitor constant (Ki), and response to the activator deoxycytidine diphosphate. The characteristics of TK from the different cell lines were compared to determine whether the product of the TK gene was changed by the mutation that produced the TK -/- genotype and reverse mutation to the TK +/- genotype. The results indicate that the TK enzymes isolated from the TK +/+ P4, TK +/- P4.3.4, and TK +/- 3.7.2C cells have similar, if not the same, characteristics. The small amounts of TK associated with TK -/- P4.3 and the mitochondria from TK +/+ P4 had similar characteristics, and both were different in many respects from the TK associated with the TK +/+ P4, TK +/- P4.3.4, and TK +/- 3.7.2C. These results raise a question about whether a structural gene is the target for chemical mutagens in the L5178Y TK +/- assay; however, this can only be answered by the isolation of the TK gene from each of the L5178Y genotypes and determination of the nucleotide sequence. PMID- 3842550 TI - Health implications of a 5 mm Hg increase in blood pressure. AB - The health implications of a mean increase in blood pressure on the order of 5 mm Hg among young persons are explored primarily from a public health point of view. After an overview of the epidemiologic behavior of human blood pressure is provided, the phenomenon of "tracking" of blood pressure is examined as is the possible relationship between the rate of blood pressure change over time and the initial value. In the last part of the paper, the community benefits of lowering the average blood pressure 5 mm Hg (in terms of number of heart attacks prevented) are estimated under several simplifying assumptions. PMID- 3842551 TI - Influence of age on the biochemical response of rat lung to ozone exposure. AB - We have previously examined the influence of animal age on the pulmonary response to ozone (O3) in rats between 7 and 90 days of age (Elsayed et al., 1982a). In the present study, we expanded the age groups of rats, and examined in greater detail the relationship between animal age and pulmonary response to inhaled O3. We exposed 7 groups of specific pathogen free, male Sprague-Dawley rats, aged 24, 30, 45, 60, 90, 180, and 365 days, to 0.8 ppm (1568 micrograms/m3) O3 continuously for 3 days. After O3 exposure, we sacrificed the exposed rats and a matched number of controls from each age group, and analyzed their lungs for a series of physical and biochemical parameters, including glutathione metabolizing and NADPH producing enzyme activities. We observed that in control rats all the parameters increased as a function of age. However, the rate of increase was generally slower after age 60 days. After O3 exposure there was an increase in all the parameters for all age groups relative to their corresponding controls, but the extent of increase was significantly larger in rats 60 days and older than in younger rats. A regression of the difference in mean values between control and exposed animals for each parameter against age showed a linear correlation, indicating that the response was age-dependent. Since the magnitude of such increases is thought to reflect the degree of lung injury, the results suggest that O3 exposure causes greater lung injury in older rats than in younger rats. We tested this assumption by exposing rats from four different age groups (24, 45, 60 and 90 days) to a lethal dose of O3 (4 ppm or 7840 micrograms/m3 for 8 hours). The mortality rates were 50% and 83% for 24 and 45 day old rats, respectively, and 100% for 60 and 90 day old rats. The results of these studies further demonstrate that older rats are more susceptible to lung injury from O3 than younger rats. PMID- 3842552 TI - Hydrocarbon nephropathy in male rats: identification of the nephrotoxic components of unleaded gasoline. AB - Previous subchronic and/or chronic inhalation studies of unleaded gasoline and a variety of petroleum naphthas, solvents, and distillates have shown that these complex materials are capable of inducing a distinctive nephropathy which appears limited to male rats. Therefore a series of gavage screening studies using male F 344 rats was conducted on components of gasoline to more clearly identify the major contributors to this nephrotoxicity. The dosing regimen consisted of 20 doses administered once daily, 5 days per wk for 4 wk. Tested were 15 pure hydrocarbon compounds typically found in unleaded gasoline boiling range, 4 naphtha streams representative of those commonly used to blend gasolines and 3 distillation fractions covering the less volatile portions of gasoline. The results revealed that the alkane (paraffin) components were primarily responsible for the nephrotoxic activity seen in unleaded gasoline, with a positive structure activity response relating the degree of alkane branching to the potency of the nephrotoxic response. In addition, the nephrotoxic activity observed with the naphtha streams and distillation fraction correlated well with the proportion of branched alkanes contained in each. PMID- 3842553 TI - [Endoscopic polypectomy of the colon in children]. AB - Colon Polyps constitute are one of the most frequent causes of rectal bleeding in infancy. The advent of endoscopic polypectomy through colonoscopy has resulted very useful in their treatment. From 1979 to 1984, 73 polypectomies were performed in 64 patients with colonic polyps, between 2 and 14 years old, 26 girls and 38 boys. 103 polyps were resected, 71 pedunculated and 32 sessiles. The most frequent location was the recto-sigmoid (85.6%), with 14.4% situated above it. 55.7% of the removed polyps were more than 1 cm., juvenile histologic type predominating (90%). No complication was observed either during or after this procedure. It is demonstrated that, endoscopic polypectomy in children is a safe, simple and effective method which avoids complications that may or surgery might produce. PMID- 3842554 TI - [Results and prognostic factors in the treatment of chronic active hepatitis with prednisone and azathioprine]. AB - Fifty-two patients with active chronic hepatitis (A.C.H.) were treated with prednisone and azathioprine simultaneously. Seventy-three per cent of the patients were cured. Healing was obtained in 94% of the patients who did not reveal necrotic bridging prior to treatment, while only 43% of the patients who had this sign was cured. Eighty-one per cent of the cases with no A- no B active chronic hepatitis was cured, while only in 66% of patients with B A.C.H. remission was obtained. All the Non A- Non B A.C.H. patients who recovered did so in less than 3 years, while only 40% of the B + A.C.H. patients obtained complete remission in the same period of time. The remaining 60% of the B + A.C.H. group recovered in a period ranging from 3 to 12 years. In the B + A.C.H. group 75% patients of the male sex were cured, while only 33% of the females recovered. Active cirrhosis was seen in 7.6% of cases. All of them were B+. Mortality rate was 3.8 and only the B + group was affected. In conclusion it must be remarked that the presence of necrotic bridging, virus B and female sex were the factors that revealed the worst prognosis as response of A.C.H. to the combined treatment of prednisone and azathioprine. PMID- 3842555 TI - [Bacterial gastroduodenitis and peptic ulcer: causal or chance relationship]. PMID- 3842556 TI - Peripheral neuroblastic tumors and congenital heart disease. Possible role of hypoxic states in tumor induction. AB - Peripheral neuroblastic tumors (PNT), including neuroblastomas, pheochromocytomas, ganglioneuromas, and paragangliomas, have been reported in association with congenital heart disease (CHD). If a significant correlation between PNT and CHD could be demonstrated, it would suggest that peripheral neuroblastic tumors might represent reactive, secondary phenomena rather than independent or incidental events. We examined this question by reviewing the autopsy files of The Johns Hopkins Hospital and found that the frequency of congenital cardiovascular problems among patients with PNT was significantly greater than the frequency of CHD in the general autopsy population (p less than 0.001). There was no correlation between CHD and central neuroblastic tumors (CNT), i.e., medulloblastomas, retinoblastomas, or pinealoblastomas, or between CHD and metastatic malignant melanoma. We examined the hypothesis that erythropoietic activity, as might be stimulated by hypoxia, was correlated with the presence of peripheral neuroblastic tumors. We found that most (87%) cardiac malformations associated with PNT produced cyanosis, and histologic assessment of hematopoiesis revealed greater activity in patients with PNT (with or without CHD) compared to those with CNT (p less than 0.05) or malignant melanoma (p less than 0.05). In addition, patients with PNT and CHD had higher frequencies of extramedullary hematopoiesis compared to age-matched controls with similar congenital heart defects (p less than 0.05), and compared to patients with CNT or metastatic malignant melanoma (p less than 0.01). These results suggest that peripheral neuroblastic tumors may arise in a setting of chronic hypoxia produced by congenital heart disease. PMID- 3842557 TI - High-dose cyclophosphamide and intermediate-dose methotrexate for the treatment of far-advanced Burkitt's lymphoma. AB - Ten consecutive patients were entered on a pilot study--for the treatment of children with far-advanced Burkitt's lymphoma--which was conducted at the Roswell Park Memorial Institute (R.P.M.I.) and the University of Rochester Medical Center (U. of R.). With the use of high-dose cyclophosphamide (HDC), intermediate-dose methotrexate (IDM), vincristine (VCR), prednisone (PRED), and intrathecal (IT) chemotherapy, nine of these 10 children achieved a complete remission (CR), and six of these nine children have remained in CR for more than 3 years and are likely cured of their disease. This regimen had significant, but generally manageable, toxicity. A single patient with ataxia-telangiectasia died during induction therapy of pneumonia and a gastrointestinal hemorrhage. A single patient with severe hemorrhagic cystitis required the substitution of cytosine arabinoside for cyclophosphamide (Cytoxan) in the regimen. One of five children presenting with bone marrow involvement survives. Such involvement appears to place patients at greater risk for developing meningeal disease. Attempts at more aggressive methods of central nervous system (CNS) prophylaxis should be employed in this group of patients. PMID- 3842558 TI - Obstacles in the prevention of psychological sequelae in survivors of childhood cancer. AB - This article reviews some of the elements of surviving childhood cancer. It is evident that there are psychological, social, and neuropsychological sequelae of surviving cancer; and therefore there is a need for prevention of psychological sequelae in survivors of childhood cancer. This article outlines four obstacles to their prevention--the lack of adequate research, the distribution of resources, professional attitudes, and the "Damocles syndrome" perspective--and suggests some means by which these obstacles may be overcome. PMID- 3842559 TI - Primary intracranial immunoblastic lymphoma in infancy. AB - Primary intracranial lymphoma is uncommon in any age group, but it is especially rare in childhood. This report describes a previously healthy, 14-month-old female infant who developed a primary intracranial immunoblastic (probable B cell) lymphoma which remained confined to the central nervous system until the time of death, 23 months after diagnosis. She appears to be the youngest patient with documentation of such a diagnosis by light and electron microscopy and by histochemical and immunoperoxidase studies. An immunological investigation was negative. Significant maternal and paternal family histories of malignancy suggest that a genetic predisposition, combined with postzygotic events such as viral infection, may be responsible for this familial cluster of tumors, and for this patient's unusual presentation. PMID- 3842560 TI - Cytologic diagnosis of the acute nonlymphoid leukemias. II. Flow cytometry, surface markers, cytogenetics, and use of cell culture techniques. AB - Part I of this two-part article discussed the use of morphologic, histochemical, and ultrastructural studies for the diagnosis and classification of ANLL variants of acute nonlymphoid leukemia. However, a small proportion of acute leukemias are not amenable to definition by these techniques and have, in the past, been classified as acute undifferentiated leukemias. The use of supplemental techniques such as flow cytometry, surface marker analysis, cytogenetics, and in vitro growth patterns will often identify the correct cellular lineage for these cases. PMID- 3842561 TI - Care of the young hemophiliac. New socioeconomic demands and the changing patient physician relationship. AB - Over the past two decades, greater knowledge about hemophilia and vastly improved treatment have led to a veritable revolution in the care of this crippling disease. In prospect is an era in which both short- and long-term sequelae may be avoided altogether. Much of the progress has been effected through novel methods of care delivery in which the relationship of the physician and his patient begins to resemble more a partnership between equals than the traditional dependency of the chronically handicapped on his doctor. Yet with, and because of, these changes ethical and legal aspects are inevitably introduced, some of which are discussed in the article. These deal with issues of public policy, distributive justice, avoidance of harm, risk imposition and risk-taking, confidentiality, and paternalism. When applicable, the discussion surrounds a prototypical case which illustrates the real dilemmas which treaters and patients may have experienced or may encounter. Following each issue is a discussion intended to show how the ethical and legal dimensions may be analyzed in a way which allows certain justifiable decisions. These analyses are themselves based upon ethical premises which are commonly accepted, legal precedent, or both. While some of these considerations are relevant to the older hemophiliac as well, most deal with topics affecting those most likely to benefit from the advances and to contend with the challenges of this new era of hemophilia care: the young hemophiliac and his physician. PMID- 3842562 TI - Emergence of pediatric hematology/oncology as an independent specialty. AB - The slow emergence of pediatric hematology as a recognized specialty was due to the fact that blood diseases were of relatively little concern to early pediatricians. Infectious and nutritional disorders were far more urgent problems. However, in the early 1940s it became apparent to some that pediatric hematology was acquiring a well-defined body of knowledge which would qualify it as being a discrete discipline of medical science. But in order to win independent status in the academic and political arenas, acquisition of other credentials and additional achievements were needed. These academic-political needs included the organization of training programs, establishment of a certifying examination, publication of a specialty journal, and the founding of a professional society. These achievements were accomplished by the foresight, cooperation, and hard work of many people. Yet there are many unsatisfied needs that remain. PMID- 3842563 TI - Acquired inhibitor to contact activation in an 18-month-old female. PMID- 3842564 TI - Leukoerythroblastosis in Kawasaki disease. PMID- 3842565 TI - Type IV congenital dyserythropoietic anemia with an unusual response to splenectomy. PMID- 3842566 TI - An unusual circulating anticoagulant in an asymptomatic child. PMID- 3842567 TI - A variant translocation between chromosomes 4 and 11, t(4q;11p) in a child with acute leukemia. PMID- 3842568 TI - The adaptative function of MSH, brain potentials and selective attention in man. PMID- 3842569 TI - Neuroendocrine control of lactation. PMID- 3842570 TI - Neurology of neuroendocrinological disturbances. PMID- 3842571 TI - Malleable surgical instruments used for transsphenoidal hypophysectomy. PMID- 3842573 TI - Combined supra and infrasellar approach for the treatment of large hypophyseal tumors. PMID- 3842572 TI - Prognostic factors in the surgical treatment of hypophyseal adenomas. PMID- 3842575 TI - Radiological diagnosis of hypophyseal pathology. PMID- 3842574 TI - Prevalence of hypergonadotropism in hypophyseal adenomas considered "nonfunctioning". PMID- 3842576 TI - Fertilization and the cytoskeleton in the mouse. PMID- 3842577 TI - The limits of molecular biology. PMID- 3842578 TI - What are the causes of morphogenesis? PMID- 3842579 TI - The origins of molecular genetics: one gene, one enzyme. PMID- 3842580 TI - The role of the International Union of Biochemistry (IUB). PMID- 3842581 TI - Rates of molecular evolution: the hominoid slowdown. PMID- 3842582 TI - The uptake and accumulation of proteins by the cell nucleus. PMID- 3842583 TI - Non-enzymatic modification of proteins by steroids: pathological implications for autoimmunity and glucocorticoid toxicity. PMID- 3842584 TI - The linkage of actin to non-erythroid membranes. PMID- 3842585 TI - Gene amplification in multidrug-resistant cells: molecular and karyotypic events. PMID- 3842586 TI - A biochemical pathway for a cellular behaviour: pHi, phosphorylcreatine shuttles, and sperm motility. PMID- 3842587 TI - Gene analysis and its role in predicting susceptibility to disease. PMID- 3842588 TI - The molecular genetics of collagen. PMID- 3842589 TI - Histones in perspective. PMID- 3842590 TI - Short odds for malaria vaccines. PMID- 3842591 TI - Biosensors: current applications and future potential. PMID- 3842592 TI - Parasites? PMID- 3842593 TI - Analysis of development and differentiation with tumour cell glycoproteins. PMID- 3842594 TI - The pineal family of aromatic amine N-acetyltransferases. PMID- 3842595 TI - Activated intermediates: the unexpected may sometimes carry a message. PMID- 3842596 TI - The AMBIS beta scanning system. PMID- 3842597 TI - What future for tropical disease research? PMID- 3842598 TI - BUdR, probability and cell variants: towards a molecular understanding of the decision to differentiate. PMID- 3842599 TI - Long-distance signal transfer in transcriptionally active chromatin--how does it occur? PMID- 3842600 TI - A case for human tumor-suppressor genes. PMID- 3842601 TI - Synthetic metalloporphyrins: a class of compounds of pharmacological interest. PMID- 3842602 TI - Transcriptional regulation of mammalian ribosomal RNA genes. PMID- 3842603 TI - Molecular karyotypes: separating chromosomes on gels. PMID- 3842604 TI - An amperometric glucose sensor made by modification of a graphite electrode surface with immobilized glucose oxidase and adsorbed mediator. AB - A membrane-free glucose sensor was made by covalent immobilization of glucose oxidase on graphite followed by adsorption of N-methyl-phenazinium ion (PMS+). The mediator was found to be necessary for the electron transfer between the enzyme and the electrode. beta-D-glucose was determined amperometrically at an applied potential of +50 mV vs SCE. The current was independent of the rotational speed which indicates a kinetically controlled response. The response was strictly linear from the detection limit, 0.5, to 150 microM and usable up to about 2 mM beta-D-glucose. The immobilized enzyme was stable over several months but the mediator had to be renewed daily. PMID- 3842605 TI - Acute appendicitis in the over-sixty age group. AB - 58 (37 per cent) of the 155 patients over the age of 60 years presenting with appendicitis at East Birmingham Hospital from 1970 to 1982 were found to have perforated appendices; the corresponding proportion under the age of 60 was 346 out of 3608 patients (10 per cent), the difference being statistically significant (P less than 0.001). The delay before surgery and the length of in patient treatment were significantly longer in the group who perforated, and the mortality was greater, although not achieving significance. Examination of the yearly incidence reveals neither an increasing trend of appendicitis in elderly patients, nor an increase in the perforation rate over the period studied. Delay, at all stages, appears to be the major factor responsible for the higher rate of perforation in this age group; only by an increased awareness of appendicitis in the elderly can this risk be minimized. PMID- 3842606 TI - [The present state of obstetrical analgesia in Czechoslovakia]. PMID- 3842607 TI - Routine pertussis immunization. AB - The benefits and risks of both the vaccine for pertussis and the disease itself are reviewed in this article. Unlike with the smallpox vaccine, it seems unlikely that a vaccine will be developed to eradicate pertussis completely, since most confer only a short-term immunity. A longitudinal study was undertaken to compare the mortality and morbidity rates of pertussis with the adverse reaction rate of the vaccination program. Risks of the vaccination, such as erythema, drowsiness, and vomiting are well known. However, the issue of neurologic difficulties has surfaced and disagreement exists. Some association does seem to exist between the vaccine and neurologic problems; however, the morbidity and mortality of whooping cough is of a greater health consequence than these rare neurologic reactions. PMID- 3842608 TI - Influence of frequency of anthelmintic treatment on the growth rate of Australian Friesian Sahiwal heifers. AB - A group of 42 Australian Friesian Sahiwal heifers was divided into 3 groups. Two groups received levamisole at different frequencies; once every 3 months or once per month at the rate of 4.45 mg of the phosphate base/kg; while the third group was untreated. Treatments were applied between 9 and 23 weeks of age, after weaning. A fourth group of 7 Friesian calves of equivalent age were initially not treated and were used as a comparison with the Australian Friesian Sahiwal control group. Bodyweights of cattle and faecal egg counts were measured every 2 weeks and larval cultures were performed on samples with high egg counts. A significant (P less than 0.05) increase in weight gain was recorded in the Australian Friesian Sahiwal heifers treated once per month compared with once every 3 months and the untreated group. The group of Friesian calves had to be treated after 7 weeks due to weight loss and poor body condition. PMID- 3842609 TI - Sagittal radiographic measurements of the cervical and lumbar vertebrae in normal adults. AB - Lateral radiographs of 157 healthy adult males have been measured to obtain geometrical dimensions of cervical and lumbar vertebrae. Measurements were based on five bony landmarks which can be easily defined in radiographs. The measurements enable the determination of 11 dimensions that are used for anthropometric evaluations of the human vertebrae. We found the cervical vertebrae increasing slightly in width from C3 to C7, while the width of the lumbar vertebrae remained almost constant. The width and height of lumbar vertebrae were approximately twice those of the cervical ones. PMID- 3842610 TI - Acro-osteolysis following snake and scorpion envenomation. AB - Three cases of acro-osteolysis are described following snake bite and three after scorpion stings. This effect is consistent with tissue necrosis secondary to the enzymatic actions of the venom. PMID- 3842611 TI - Plasma histamine levels following administration of radiographic contrast media. AB - The effect of two conventional high-osmolality and two new low-osmolality contrast media on plasma histamine levels has been examined. The study population included 25 patients undergoing intravenous urography with Urovison 58% (sodium and meglumine diatrizoate), 24 patients receiving intravenous Hexabrix 320 (sodium and meglumine ioxaglate) for urography, 16 patients receiving intravenous Iopamiro 370 (iopamidol) for urography and 12 patients receiving Urografin 76% (sodium and meglumine diatrizoate) for coronary angiography. Seventy-four percent of the 77 patients studied suffered adverse reactions ranging from a feeling of warmth and nausea to laryngeal oedema and bronchospasm. Hexabrix 320 and Iopamiro 370 were associated with the least patient discomfort. All contrast agents usually produced a rise in plasma histamine following injection (Iopamiro 370 causing the least change) and the histamine levels then fell towards preinjection values over a space of about 10 minutes. No relationship was observed between the magnitude of the increase in histamine and the severity of the reaction that occurred. However, a relationship was suggested between the mean peak plasma histamine level achieved and the occurrence of a Grade II reaction (i.e., dry retching/vomiting, mild urticaria or rash). These findings raise the probability that histamine contributes to the more severe grades of reaction to radiographic contrast media. PMID- 3842612 TI - An evaluation of the Meditech M250 and a comparison with other CT scanners. AB - The Meditech M250 computerised tomography (CT) machine was evaluated during the first half of 1984. Measurements were made of noise, modulation transfer function, slice width, radiation dose profile, uniformity and linearity of CT number, effective photon energy and parameters relating to machine specification, such as pixel size and scan time. All breakdowns were logged to indicate machine reliability. A comparison with the established EMI CT1010 and CT5005 was made for noise, resolution and multislice radiation dose, as well as the dose efficiency or quality (Q) factor for both head and body modes of operation. The M250 was found to perform to its intended specification with an acceptable level of reliability. PMID- 3842613 TI - Assessment of the Meditech Euroscanner for clinical use. AB - In April 1983, Prototype I of the Meditech Whole Body CT Scanner (Euroscanner) was installed at Frenchay Hospital as part of a Department of Health and Social Security (DHSS) trial to assess its function and reliability. After a few months usage, several modifications were made to the machine. The official trial therefore commenced on Prototype II in the middle of January 1984 and lasted until the end of July 1984. During that time a planned changeover took place in the Neuroradiological Department, with the replacement of a ten-year-old EMI 1010 head scanner by an IGE 8800. This meant that from the beginning of May until the end of July, the Meditech Scanner was the only available CT scanner in a busy Regional Department with District Hospital commitments as well. This paper provides a summary of the clinical experiences resulting from the use of the machine, and is a rider to that in which Greensmith et al (1985) describe the physical properties of the machine. PMID- 3842614 TI - The use of an image processing system in radiotherapy simulation. AB - Image quality produced in radiotherapy simulation is often so poor in certain anatomical sites (e.g. the pelvis) that it can adversely affect clinical judgement with regard to treatment set-up. In treatment planning both the field arrangement and the availability of accurate anatomical information are important, and should ideally be provided at the time of simulation by methods based on the principle of computerised tomography. In this work an image processing system has been used as a link between the video output from the simulator and the treatment planning computer in order to implement a CT facility on the simulator, as well as allowing real-time image enhancement to be investigated as a method of improving picture quality. This approach also enables a new method of simulation to be considered which reduces patient dose and prolongs the useful working life of the X-ray tube. PMID- 3842615 TI - Metastatic carcinoma from unknown primary site: the experience of a large oncology centre. AB - The case records of patients presenting with metastases from an unknown primary cancer (MUP) have been reviewed. Important prognostic variables were performance status and the presence of disease in more than one system. Patients of poor performance status and disease in multiple organs had a median survival of one month and 87% were dead within three months. Those patients of good performance status and disease apparent in only one organ had a median survival of seven months. Patients with carcinoma confined to lymph nodes in the high cervical region who received treatment with radiotherapy had 3- and 5-year survival rates of 26% and 17% respectively. PMID- 3842616 TI - Repair in mouse lung of multifraction X rays and neutrons: extension to 40 fractions. AB - We have extended our previous multiple irradiations of mouse lung from 20 to 40 fractions of both X-ray and neutron radiation in order to test whether the repair parameters previously derived will hold for lower doses per fraction, down to 1.1 Gy of X rays and 0.18 Gy of 3 MeV neutrons per fraction. Repair parameters were calculated from measurements of breathing rate and lethality at monthly intervals up to 17 months after irradiation with 1, 10, 20 or 40 equal fractions. Sparing of neutron damage was negligible when the neutron dose was divided into multiple fractions, but progressively greater repair of lung damage was seen after increasing numbers of X-ray fractions. A significant increase in the iso-effect dose for 40 fractions of X rays was found compared with 20 fractions, even when two fractions per day were given at intervals of about 6 hours, as was the case in the 40 fraction experiment. The data were well fitted by the linear quadratic formula for response vs. dose per fraction and the ratio alpha/beta yielded values of approximately 3 Gy after X rays and 30 to 40 Gy after neutron irradiation; these values are not different from alpha/beta ratios found for up to 20 fractions. The single dose RBE was less than 2, increasing to about 6 at the lowest dose per fraction measured, in agreement with previous results. The ratio of the alpha component for neutrons to that for X rays was about 8, which is therefore the limiting RBE predicted for infinitely small doses per fraction. PMID- 3842617 TI - Congenital contractural arachnodactyly. PMID- 3842618 TI - Evaluation of neonatal sacrococcygeal teratoma by DSA and direct sagittal CT. PMID- 3842619 TI - Inferior pancreatico-duodenal artery aneurysm presenting in a young woman. PMID- 3842620 TI - Portal vein gas following double-contrast barium enema. PMID- 3842621 TI - Carcinoma of the oesophagus after radiotherapy for Hodgkin's disease. PMID- 3842622 TI - Transverse colon volvulus associated with a vascular and neuronal malformation. PMID- 3842623 TI - A cautionary note on the resolution of paraquat lung damage after radiotherapy. AB - We have been able to model the lung damage caused by paraquat in our mice and have found a dose-related increase in lung damage after PQ. Unfortunately we have not found a radiation dose or optimum time for irradiation which shows a reduction of the PQ lung damage. PMID- 3842624 TI - Large field ionography--preliminary results. PMID- 3842625 TI - Lung irradiation for paraquat toxicity. PMID- 3842626 TI - The usefulness of a moving grid in mammography. PMID- 3842627 TI - Quantitative bone scintigraphy in Paget's disease treated with APD. AB - Half-yearly bone scintigrams of 27 patients with Paget's disease, who were treated with the bisphosphonate APD, were evaluated. Uptake of 99Tcm-Sn-EHDP was determined by computer analysis. All patients reached clinical and biochemical remission, usually within 6 months. The scintigraphic uptake dropped steeply during the first 6 months and only slightly during the second 6 months. The decrease in uptake was proportional to the original uptake and averaged 80% of this value. The residual 20% persisted, although clinical and biochemical remission were attained. The scintigraphic results obtained with APD agree with our earlier findings for patients in remission after treatment with a combination of calcitonin and EHDP. Eight patients suffered a recurrence after discontinuation of APD. In all cases scintigraphic deterioration also occurred, usually simultaneously or 6 months before the recurrence. In two patients with scintigraphic deterioration a recurrence could not be confirmed during this study. The scintigraphic deterioration presented as one of the three patterns seen after combination therapy. PMID- 3842628 TI - Comparison of low-osmolar contrast media in cardiac angiography. AB - Two hundred and twenty-five patients investigated by left ventricular, coronary artery and/or proximal aortic angiography were randomly assigned to one of three contrast medium groups (Hexabrix 320, Niopam 300 or Omnipaque 300). Subjective response to injection of contrast medium was noted at the time of investigation and during the next 24 h. No significant difference was found between the three currently available low-osmolar contrast media. PMID- 3842629 TI - Scintigraphy and contrast radiography for epiphora. AB - During a one-year period 53 patients were referred for the investigation of epiphora. All underwent bilateral dacryoscintigraphy. Following the isotope study the patients had either bilateral or unilateral macrodacryocystography; a total of 66 tear ducts were shown by this procedure. The scintigraphs were more sensitive for obstruction (51/66 systems or 77%) than radiography (33/66 systems or 51%). Normal dacryoscintigraphy was always associated with duct patency on dacryocystography. We have concluded that scintigraphy should always be the first investigation and that, if this is normal, radiography is not necessary. The use of digital subtraction imaging for the lacrimal passages is discussed. It is suggested that this may provide information obtained at present only by combining dacryoscintigraphy with conventional contrast radiography. PMID- 3842630 TI - A clinical microwave hyperthermia system with multipoint real-time thermal dosimetry. AB - A clinical hyperthermia system using a 915 MHz microwave generator and incorporating multipoint thermocouple thermometry is described. Temperatures can be monitored simultaneously at 16 points and measurements displayed on a visual display unit and a plotter. The power output of the generator is adjusted under computer control to maintain a constant predetermined temperature in a chosen control channel. A clinically useful feature of the system is the ability to determine the effective cumulative thermal dose delivered to the tissue at points monitored in real time. The basis for the thermal dose calculation is discussed in detail. The calculated dose parameter is displayed for each of the 16 channels during the treatment and updated every 30 s. This real-time display of a thermal dose parameter has made possible a more homogeneous heating of tumours. PMID- 3842631 TI - Spinal cord compression secondary to Paget's disease of the axis. PMID- 3842632 TI - Syrinx formation in multiple sclerosis. PMID- 3842633 TI - Oesophageal ulceration due to doxycycline. PMID- 3842634 TI - Small bowel metastases from a Merkel cell tumor. PMID- 3842635 TI - Caecal lipomas mimicking colonic angiodysplasia. PMID- 3842636 TI - Myelosuppression occurring after receiving tamoxifen for breast cancer. International Adjuvant Therapy Organisation. PMID- 3842637 TI - Eye dose limits and the use of overcouch and undercouch X-ray image intensifier systems. PMID- 3842638 TI - Routine monitoring of eye dose. PMID- 3842639 TI - Unforeseen variation of electron output with field size following modification of linear accelerator treatment head. PMID- 3842640 TI - Urachal cancer. PMID- 3842641 TI - [Dilated cardiomyopathy: etiopathogenesis]. PMID- 3842642 TI - [Dilated cardiomyopathy. Clinical and non-invasive instrumental diagnosis]. PMID- 3842643 TI - [Dilated cardiomyopathy: hemodynamics]. PMID- 3842644 TI - [Dilated cardiomyopathy: prognosis]. PMID- 3842646 TI - Regulation of lung water content and distribution: theoretical concepts, experimental data and methods of determination. PMID- 3842645 TI - [Effects of variations in coronary flow on heart metabolism]. PMID- 3842647 TI - Elimination of pulmonary wedge pressure errors commonly encountered in the ICU. PMID- 3842648 TI - [Hemodynamics of the lesser circulation in systemic arterial hypertension]. PMID- 3842649 TI - [Processing of cardiovascular imaging: radioisotopic angiography]. PMID- 3842650 TI - Database management of haemodynamic data. PMID- 3842651 TI - [Evaluation of the anti-anginal activity of diltiazem during prolonged administration in subjects with exertional angina. Cross-over double-blind study in comparison with propranolol]. PMID- 3842652 TI - Monoclonal antibody patterns in lymphomatoid papulosis. AB - Atypical cells resembling Reed-Sternberg cells are a characteristic histologic feature of lymphomatoid papulosis. Thus far no consistent data are available on the nature of these cells, or a possible antigenic relationship between them and Reed-Sternberg cells. Twenty-four biopsy specimens from 14 patients with lymphomatoid papulosis were immunolabeled with antibodies against Ki-1 and other Reed-Sternberg cell-associated antigens. In all cases a proportion of the large, atypical cells expressed the Ki-1 antigen. In contrast, in 20 biopsy specimens of benign inflammatory skin lesions or mycosis fungoides, Ki-1-positive cells were absent or only occasionally present. Furthermore, the large atypical cells of lymphomatoid papulosis also expressed other antigens (for example, T3, T4, HLA DR, IL-2 receptors) that have previously been demonstrated on Reed-Sternberg cells. Our findings, together with the observation that the Ki-1 antigen can be induced on peripheral blood lymphocytes after prolonged phytohemagglutinin stimulation, suggest that the Ki-1-positive cells in lymphomatoid papulosis are activated T cells closely related to the Reed-Sternberg cells of Hodgkin's disease. PMID- 3842653 TI - Doing something about teenage pregnancy. PMID- 3842654 TI - Teenage pregnancy in developed countries: determinants and policy implications. PMID- 3842655 TI - The availability of reproductive health services from U.S. private physicians. AB - Data on the provision of seven types of reproductive health care were collected from private physicians in four specialties: general/family practitioners (GP/FPs), general surgeons, obstetrician-gynecologists and urologists. All ob gyns, and eight in 10 GP/FPs, provide the pill, IUD or diaphragm. Over nine in 10 ob-gyns provide infertility and obstetric care and prenatal genetic screening; but only one-third or fewer of GP/FPs do so. Ob-gyns and urologists are far more likely to perform sterilizations than are GP/FPs and surgeons (nine in 10, compared with one-fifth to one-half). Although ob-gyns are the most likely to perform abortions, only four in 10 do so. Among ob-gyns who do not perform tubal sterilizations or abortions, and among urologists who do not perform vasectomies, the primary reason is moral or religious objections (reported by 59-71 percent). For GP/FPs and surgeons who do not perform the three procedures, the leading reason is that they do not perform surgery or that type of surgery; however, 34 percent of nonproviders in these specialties report moral or religious opposition to abortion. Eight in 10 ob-gyns will provide contraceptives to minors without parental consent, but only six in 10 GP/FPs will do so. One-half of doctors who perform female sterilizations, and eight in 10 of those who do vasectomies, require spousal consent. Among those who perform abortions, half require parental consent for minors. Access to private reproductive health care is quite limited for the poor, because many physicians will not accept Medicaid reimbursements or reduce their fees for low-income patients.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842656 TI - A portrait of American women who obtain abortions. AB - In 1981, as in 1980, most abortions in the United States were obtained by young women, unmarried women and white women, and were performed in the first eight weeks following the last menstrual period (approximately six weeks after conception). The proportion of abortions obtained by unmarried women has increased slightly, and the fraction obtained by teenagers has decreased, mainly because of shifts in the distribution of these groups in the population. The percentage of abortions that are repeat procedures has increased, representing more than one-third of all abortions. The increase is due largely to the rise in the number of women who have had a first abortion, and who are, therefore, exposed to the risk of having a second procedure. Eighty-five percent of all abortions are performed by vacuum aspiration. Dilatation and evacuation is the method used in two-thirds of abortions performed more than 12 weeks past the last menstrual period, and in nine out of 10 abortions that are performed between the 13th and the 15th week. About three percent of women aged 15-44 obtained abortions in 1981, and 26 percent of pregnancies were terminated by abortion--the same fractions as in 1980. About six percent of 18-19-year-olds had abortions- the highest rate of any age-group. The abortion rate (the number of abortions per 1,000 women aged 15-44) and ratio (the number of abortions per 100 live births and abortions) are much higher for unmarried than for married women.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842657 TI - An interlocking agenda. PMID- 3842658 TI - Recommended low-dose pills. PMID- 3842659 TI - The issue of late abortions. PMID- 3842660 TI - Can low birth weight be prevented? PMID- 3842661 TI - The need for prenatal care in the United States: evidence from the 1980 National Natality Survey. AB - Seventy-eight percent of U.S. mothers begin prenatal care during the first three months of pregnancy; 18 percent wait until the second three months; and five percent wait until the third trimester or receive no care at all. Patterns of prenatal care vary widely among population subgroups: Mothers younger than 18 and unmarried mothers are the least likely to obtain first-trimester care (49 percent and 56 percent, respectively), and the most likely to obtain care only in the third trimester or none at all (about 12 percent of each group). Women aged 18 19, blacks, Hispanics, poor women and women with little education also have disproportionately high levels of very late or no care (7-9 percent). Married, white, nonpoor women, in contrast, obtain the most timely prenatal care: In 1980, only two percent initiated care in the third trimester or received no care. Compared with this subgroup of women, the population as a whole has two times the risk of obtaining inadequate care. Unmarried women run the highest relative risk (five times the risk for married, white, nonpoor women), followed by teenagers, Hispanic women, women with little education, poor women and blacks (who have from three to more than four times the risk of the comparison group). PMID- 3842662 TI - Contraceptive use in Canada, 1984. AB - Canada's first national fertility survey, carried out by telephone in 1984, found that 68 percent of all women aged 18-49-73 percent of currently married women, 69 percent of the previously married women and 57 percent of single women--are practicing contraception. Overall, the most widely used method of birth control in Canada is sterilization (male and female), which is relied on by almost 60 percent of all married users and 66 percent of previously married users. Among single women, the preferred method is the pill, chosen by seven out of 10 of such users. Among all women, the major determinant of method choice is age: The pill is overwhelmingly chosen by women under 25, and sterilization, by those 30 and over. While the IUD and the condom are used by roughly 10-14 percent of women in their 20s who practice contraception, these methods decline in importance with increasing age. Highly educated women are less likely than those with little education to elect sterilization, and more likely to rely on barrier methods. Differences in contraceptive prevalence and patterns of use between Catholics and Protestants have all but disappeared in Canada, but church attendance and country of birth appear to exert a modest influence on method choice. As might be anticipated, women whose family size is complete have considerably higher levels of contraceptive use than those who expect to have more children. The survey reveals no difference in contraceptive use between Quebec women and those in the rest of Canada, thus confirming both the accuracy of earlier Quebec studies showing extremely high levels of sterilization and the applicability of these findings to all other Canadian women.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842663 TI - Induced abortion and fertility. AB - Even in countries with high rates of legal induced abortion, contraceptive use and marital patterns nearly always have a greater impact on fertility levels than does abortion. As a rule, extremely high rates of abortion--three or more abortions per woman of childbearing age during the reproductive years--are required for the fertility-inhibiting effect of abortion to rival that of contraceptive use. Nevertheless, the absolute effect of abortion on fertility (defined as the amount by which the current total fertility rate, or TFR, would increase if no abortions were performed) is often substantial. In most of the countries examined, the TFR would have been from about 20 percent to nearly 90 percent higher than it actually was (other things being equal) had no induced abortions been performed. Among developed countries, the Soviet Union, Japan, Eastern European countries, Israel and the United States have the highest total legal abortion rates, ranging from one abortion to more than five abortions per woman of childbearing age during the reproductive years. Among the developing countries for which reliable data are available, South Korea, China, Cuba and Singapore have rates of about 1-2 abortions per woman of fertile age. However, a number of other countries in Latin America and Asia, for which the data are deficient, probably have equally high rates. PMID- 3842664 TI - Early childbearing and completion of high school. PMID- 3842665 TI - Individual vs. group education in family planning clinics. PMID- 3842667 TI - Sex education in Swedish schools: the facts and the fiction. PMID- 3842668 TI - Need for prenatal care? PMID- 3842666 TI - State laws and the provision of family planning and abortion services in 1985. PMID- 3842669 TI - Repeat C-sections: a historical note. PMID- 3842670 TI - Parity, pregnancy and the sponge. PMID- 3842671 TI - [The incidence of intestinal parasites in schoolchildren in Kragujevac and the surrounding region]. PMID- 3842672 TI - [The significance of immunologic tests in the diagnosis of pollen allergy in childhood]. PMID- 3842673 TI - [Organ-specific antibodies in insulin-dependent diabetes]. PMID- 3842674 TI - [The etiopathogenesis of ulcerative colitis]. PMID- 3842675 TI - [Histamine and Hirschsprung disease]. PMID- 3842676 TI - [The incidence of intestinal parasites in schoolchildren in Dragacevo]. PMID- 3842677 TI - [The role of histamine in behavior: the effect of histamine on aggression and carbachol-induced convulsions]. PMID- 3842678 TI - [Central mechanisms of vomiting: the effect of histamine, 5-hydroxytryptamine, noradrenaline, nicotine and morphine]. PMID- 3842679 TI - [Clinical significance of serum theophylline levels in patients with bronchial asthma]. PMID- 3842680 TI - [Genetic control of the differences in specific hypersensitivity reactions to retinal antigens]. PMID- 3842681 TI - [Laboratory study of immunoglobulins and complement in workers in the flour milling-baking industry in Djakovo]. PMID- 3842682 TI - [Sensitivity to plastic materials]. PMID- 3842683 TI - [The effect of the type of diabetes,the HLA type and metabolic status on cellular immunity in diabetic patients]. PMID- 3842684 TI - [Adrenal cortex function in hypermetabolic conditions]. PMID- 3842685 TI - [The incidence of intestinal parasites in schoolchildren in the Pljevalja region]. PMID- 3842687 TI - Embryotoxicity: a challenge to clinical pharmacology. PMID- 3842686 TI - [Risk factors in the sensitization of workers in the flour milling-baking industry]. PMID- 3842688 TI - Clinical pharmacology: the end or a new beginning? PMID- 3842689 TI - Clinical pharmacology in the GDR: the development and present situation. PMID- 3842690 TI - Relationship between renal clearance of drugs and glomerular filtration rate in patients with chronic renal insufficiency. PMID- 3842691 TI - Critical reflection on the collection and evaluation of adverse drug reaction data. PMID- 3842692 TI - Clinical significance of serum levels of antibiotics. PMID- 3842693 TI - Present and future trends in drug monitoring. AB - The concept of drug monitoring is generally accepted for toxic drugs and for some particular pathological states. However its basis and its limits are still controversial. This paper outlines under which circumstances drug monitoring is of absolute necessity. This paper also deals with pharmacokinetics, i.e. the measurement of drug concentration as a tool in drug monitoring. Finally it tries to forecast future developments in this field using the analysis of receptors, found in blood cells, as probes of tissue receptors. PMID- 3842694 TI - The influence of the acetylator phenotype for the clinical use of dihydralazine. AB - Dihydralazine is a substrate of the human N-acetyltransferase. Therefore the acetylator phenotype could influence the pharmacodynamic response of dihydralazine and/or side effects of this drug. In this study it could be shown that: among patients with dihydralazine incompatibility slow acetylators preponderated; the risk of early side effects was higher in females than in males; and the ratio of fast/slow acetylators was higher in dihydralazine treated patients than in patients treated with other antihypertensives. Dihydralazine should be given very cautiously to female hypertonic patients that are slow acetylators. PMID- 3842695 TI - Plasma pharmacokinetics of adriamycin and antipyrine and its relation to the therapeutic and toxic effects. AB - After a simultaneous administration of adriamycin and antipyrine to 19 tumor patients, the plasma kinetics of both drugs, the therapeutic effect and the reaction to white blood cells were determined. Antipyrine was given orally at a dose of 875 mg, whereas adriamycin was administered by means of intravenous infusion for 20 min at 60 mg/m2. This application was repeated in eight patients after three weeks. Nine patients had a normal liver function. In ten patients, slight increases were found in individual liver function parameters. All patients were free from metastases of the liver and had bilirubin levels within the normal range. Antipyrine followed an open one-compartment model, whereas adriamycin followed an open two-compartment model. In the mean, t1/2 el and Cl tot of antipyrine were found to be 16.1 h and 32.9 ml/min, t1/2 beta and Cl tot of adriamycin were 23.1 h and 877 ml/min. For antipyrine and adriamycin, these parameters varied interindividually by the factors 2.8 and 3.1, respectively. No correlations were found between the liver function parameters, and the kinetic elimination parameters and the areas under the curves of both drugs. However, significant positive correlations were found to exist between t1/2 el antipyrine and t1/2 beta adriamycin and between the areas under the curves of the two drugs. A relationship between the AUC adriamycinol/AUC adriamycin ratio (which was 0.52 in the mean) and the antipyrine elimination rate did not exist. As compared to 12 persons with no response or progression, the seven patients with partial or complete response had a significantly higher AUC and a significantly lower Cl tot of adriamycin. As compared to the patients with elimination half-life values of less than 20 h, five patients with antipyrine elimination half-life values of more than 20 h had a significantly longer adriamycin elimination beta-phase and a stronger depressive effect on the white blood cells. The results obtained suggest that the antipyrine kinetics in patients with normal or slightly impaired liver function is a useful parameter for an assessment of the depression of white blood cells and the dose adjustment for adriamycin. PMID- 3842696 TI - Low molecular weight immunomodifiers produced by microorganisms. AB - Umezawa initiated the study of low molecular weight enzyme inhibitors produced by microorganisms and discovered more than 50 inhibitors which had various pharmacological activities. An extensive search was begun for inhibitors of enzymes on cell surfaces. Bestatin, amastatin, arphamenine, forphenicine, ebelactone thus found bound to cells and enhanced immune responses. The immunity enhancing effects of bestatin, forphenicinol (a derivative of forphenicine) and arphamenine have been studied in detail. The effect of bestatin in suppressing relapses and prolonging the survival period of patients were confirmed by randomized clinical tests with leukemia, melanoma, etc.... PMID- 3842697 TI - [Proceedings of the German Dermatologic Society. 34th meeting, Zurich, 20-24 March 1985]. PMID- 3842698 TI - [Research--the source of medical progress]. PMID- 3842699 TI - [Methods of therapeutic immunostimulation]. PMID- 3842700 TI - [Discovery of Lyme disease spirochetes (Borrelia burgdorferi)]. PMID- 3842701 TI - [Attempt at a definition of the concept "eczema"]. PMID- 3842702 TI - [Hereditary angioedema and androgen therapy]. PMID- 3842703 TI - [Leukocyte response]. PMID- 3842704 TI - Carcinogenicities in mice and rats of IQ, MeIQ, and MeIQx. AB - The mutagenic heterocyclic amines, 2-amino-3-methylimidazo[4,5-f]quinoline (IQ), 2-amino-3,4-dimethylimidazo[4,5-f]quinoline (MeIQ), and 2-amino-3,8 dimethylimidazo[4,5-f]quinoxaline (MeIQx) are present in broiled fish, fried beef, and beef extract. Their carcinogenicities in CDF1 mice and F344 rats were tested by their oral administration in the diet. In mice given diet containing 0.03% IQ, tumors developed in the liver (hepatocellular carcinomas or hepatocellular adenomas), forestomach (squamous cell carcinomas or papillomas), and lung (adenocarcinomas or adenomas) at high incidences. In mice given diet containing 0.04% or 0.01% MeIQ, squamous cell carcinomas and papillomas of the forestomach developed at high incidences. About 40% of the squamous cell carcinomas induced in the forestomach by 0.04% MeIQ metastasized to the liver. Clear dose-response relations were seen in the incidences of tumors in the groups given 0.04% and 0.01% MeIQ. The squamous cell carcinoma-papilloma ratios were higher in 0.04% groups than in 0.01% groups. Female mice treated with 0.04% and 0.01% MeIQ showed significantly higher incidences of liver tumors than controls. The experiment on the carcinogenicity of MeIQx at a dose of 0.06% in mice is still in progress but by experimental week 74, 4 of 16 males and 7 of 18 females autopsied were found to have liver tumors. Rats given diet containing 0.03% IQ showed high incidences of hepatocellular carcinomas, adenocarcinomas of the small and large intestines, and squamous cell carcinomas of the Zymbal gand, clitoral gland, and skin. Except for the liver, the target organs of IQ in CDF1 mice and F344 rats were different. PMID- 3842705 TI - HLA typing in patients of habitual abortion. PMID- 3842706 TI - C-reactive protein as a predictor of chorioamnionitis with rupture of membranes. PMID- 3842707 TI - Bacterial presence within renal calculi and urinary tract infection. PMID- 3842708 TI - Autoimmune reactions in Egyptian children with hepatomegaly. PMID- 3842709 TI - Organisms causing tonsillitis with a comparative study of the anti-streptolysin 0 titre and C-reactive protein before and after tonsillectomy. PMID- 3842710 TI - Serum and salivary IgA in mumps. PMID- 3842712 TI - Medical education and standards. PMID- 3842711 TI - Serologic profiles for cases of acute versus chronic hepatitis. PMID- 3842713 TI - Innovations in child health care in Asia. PMID- 3842714 TI - The influence of fibrinogen and other plasma proteins on the ESR and plasma viscosity. PMID- 3842716 TI - Reasons for visiting a hospital-based general medical clinic. PMID- 3842715 TI - The effect of long-term deworming on the prevalence of soil-transmitted helminthiases in Malaysia. PMID- 3842717 TI - The spectrum of liver disease in Penang: a clinical and histological study. PMID- 3842718 TI - Spinal analgesia and headache at Penang General Hospital. PMID- 3842719 TI - Chronic haemodialysis. PMID- 3842720 TI - A study of the prevalence of endemic goitre in an inland Iban community, Sarawak. PMID- 3842721 TI - Psychoses associated with thyrotoxicosis: a retrospective study of twenty cases. PMID- 3842723 TI - Gaucher's disease type 1A: a case report. PMID- 3842722 TI - Giant cavernous hemangioma of the anterior chest wall in a neonate: a case report. PMID- 3842724 TI - Successful management of a patient with stab injury to the heart: a case report. PMID- 3842725 TI - Declining post-mortems: a cause for concern. PMID- 3842726 TI - Hysteria in Malaysian children-family dynamics and management. PMID- 3842727 TI - Optimum age for measles immunization in Malaysia. PMID- 3842728 TI - Tuberculous encephalopathy in Sabah children. PMID- 3842729 TI - Health literacy and food beliefs among Ibans, Sarawak. PMID- 3842730 TI - Right heart haemodynamics in normal Malaysian subjects. PMID- 3842731 TI - Renal trauma: a local experience. PMID- 3842732 TI - Whole lung tomography in the early detection and follow-up of lung secondaries following hydatidiform mole. PMID- 3842733 TI - Intracranial meningiomas: a report of 13 cases. PMID- 3842734 TI - Gay men-bowel syndrome: a report of parasitic infection in homosexual patients. PMID- 3842735 TI - A case of schizophrenia with the Klippel-Feil syndrome. PMID- 3842736 TI - Post traumatic parkinsonian syndrome: a case report. PMID- 3842737 TI - Neglected acute post exertional anterior compartment syndrome: a case report. PMID- 3842738 TI - [Dipyridamole as an inhibitor of vaccinia virus replication]. AB - Dipyridamole in concentration of 25 microM inhibited the multiplication of vaccinia virus in about 90% of cells. In the presence of this substance, [3H] uptake was sharply reduced both in uninfected and infected RK13 cells, while [14C]-uptake was not inhibited incorporation of [3H]-thymidine and [14C]-amino acids into viral particles. The present findings suggest that the antiviral character of dipyridamole is related with the inhibition of the substrate transport through the cell membrane. PMID- 3842739 TI - [Acetobacter methanolicus--a new organism for genetic studies]. AB - A new bacterial strain is described belonging to Acetobacter methanolicus species. It is of industrial value as a producer of protein and methanol products. The strain is acidophile and this feature comprises a conspicuous technological advantage. The results of bacteriophage and cell interactions are reported. They might be potentially useful for elaboration of the transduction technique for the strain. The collection of mutants was obtained including those utilizing methanol, having auxotrophic markers as well as streptomycin and rifampicin resistances. The transfer of plasmids RSF1010 and R68 to Acetobacter methanolicus from other bacteria has been demonstrated. PMID- 3842740 TI - [Characteristics of virion formation during mixed infection with influenza viruses A and B]. AB - Simultaneous infection of MDCK cells with influenza A and B viruses at an equal multiplicity of infection leads to the synthesis of the proteins of both viruses. In the population of virions the hemagglutinin of influenza B virus prevails, whereas NP proteins of both viruses are present in similar quantities. Trypsin treatment of the double-infected cells resulting in the cleavage of the hemagglutinin molecules at the cell surface allows revealing the predominance of influenza B hemagglutinin on cell surface, although both hemagglutinins are accumulated in the cells. An impairment of the hemagglutinin transport to the cell surface as a possible additional mechanism of heterotypic interference and its possible effect on the polypeptide content of the phenotypically mixed virions are discussed. PMID- 3842741 TI - [Prediction of the nucleotide-binding properties of viral proteins from their primary structure]. AB - Screening of amino acid sequences of a variety of virus-specific proteins for fragments structurally similar to the "ATP-consensus", a universal sequence found in nucleotide-binding pockets of several ATP-utilizing enzymes, was made. Fragments of hypothetical nucleotide-binding pockets were discovered in some proteins of DNA viruses (herpesviruses, papovaviruses, poxviruses and parvoviruses, comoviruses, bromoviruses, alpha 1-phaviruses and tobamoviruses). Analysis of the published data concerning the functions of the virus-specific proteins in question makes it evident that the proposal that these proteins possess nucleotide-binding properties. Is confirmed by these data or, at least does, not contradict to them. The possibility of a common evolutionary origin of the proteins containing fragments similar to the "ATP-consensus" is discussed. PMID- 3842742 TI - [Comparative characteristics of protein-synthesizing apparatus of diploid and aneuploid human embryo fibroblasts]. AB - The time of average polypeptide chain synthesis (tc), distribution of synthesized polypeptides according to their molecular masses, the ratio of translating and nontranslating ribosomes and polyribosomes of different size have been analyzed for diploid and aneuploid strains of fibroblasts. The magnitude of tc as well as the size of polypeptide chains synthesized were found to be similar for both kinds of fibroblasts. The relative cellular content of the translating ribosomes has been shown to decrease during the transition of cells from both strains to the stationary growth phase. The relative content of heavy polyribosomes is lower in aneuploid cells as compared with that in diploid cells. The process of translation in aneuploid fibroblasts is concluded to have no essential deviations from normal. PMID- 3842743 TI - [Mapping and cloning of the gene coding for beta-glucanase from various bacilli]. AB - Beta-glucanase gene from Bacillus subtilis 168 has been mapped by bacteriophage pBS1 transduction technique between sacA and purA genes. The stimulating effect of pleiotropic mutations pap, amyB and sacUh on beta-glucanase production in Bacillus subtilis and Bacillus amyloliquefaciens has been described. Beta glucanase gene from Bacillus amyloliquefaciens has been cloned ona Charon 4A vector. Expression of the gene in E. coli cells depended on the orientation of the cloned DNA on a pBR322 vector plasmid. Maximal enzymatic activity was registered in periplasm. Beta-glucanase gene was recloned in Bacillus subtilis cells. Bacillus subtilis strain, harbouring pBG1, produces 500 times more beta glucanase as compared with the wild type strain of Bacillus subtilis. PMID- 3842744 TI - [Vector plasmids and the strategy of molecular cloning for streptococci]. AB - The experiments on elaboration of gene engineering methodology for streptococci are described. Two vectors were constructed for DNA cloning in streptococci on the basis of plasmids pSM19035 and pIP2501. Some of the plasmids occurred to be valuable vectors for molecular cloning in bacilli. Peculiarities of the transformation mechanism in streptococci were found to impede the molecular cloning. The recombination technique of cloning was successfully used in the streptococcal system. PMID- 3842745 TI - [Isolation and characteristics of staphylococcal alpha-toxin]. AB - A method for isolation of staphylococcal alpha-toxin preparations has been elaborated. Characteristics of the toxin isolated by the method are as follows: mol. mass = 35 Kd; HU = 0.1 microgram; DnD= 0.1 microgram; LD50 = 2 micrograms. It is for the first time that alpha-toxin was fragmented by papain and digested by alpha, gamma-chemotrypsin. The papain fragments (18.5 and 15 Kd) retained lethal activity but lost hemolytic and dermonecrotic activities. Alpha, gamma chemotryptic digested fragments (18 and 15 Kd) retained hemolytic and lethal effects, but lost their dermonecrotic activity. PMID- 3842746 TI - [Storage and reconstruction of hybridomas producing monoclonal antibodies against viral antigens]. AB - The conditions were optimized for freezing storage, restoring and further cultivation of hybridoma cells producing antibodies to viral antigens. The effect of density of cellular suspension frozen,concentration of calf embryo serum in cryoprotected medium and mild conditions of the restoring of hybridoma were studied. To restore deeply frozen hybridoma 24 hole plastic panels with a layer of feeding cells of the HEPES and insulin containing medium were used. The fulfilling of these requirements makes possible restoration of intact antibody producing hybridoma from 10(2)-10(3) frozen cells. PMID- 3842747 TI - [Inhibition of influenza A virus RNA-polymerase by deoxydinucleoside phosphates]. PMID- 3842748 TI - [Effect of the pC194 plasmid on the development of Bacillus thuringiensis phages]. AB - Bacillus thuringiensis var. galleriae strains were transformed by plasmid pC194, coding for chloramphenicol resistance (CmR). Efficiency of plating and the yields of bacteriophages Tg13 and Tg27 maturating in CmR transformant cells were decreased for 2-3 orders as compared with the ones in parental strains. The CmR transformants are characterized by the increased level of spontaneous induction of bacteriophage Tg22. PMID- 3842749 TI - [The use of the cationic detergent dodecyltrimethylammonium bromide for the isolation of influenza virus glycoproteins with subsequent integration of the protein into liposome membrane]. AB - Glycoproteins were isolated from influenza virus with the use of cationic detergent dodecyltrimethylammoniumbromide and attached to preformed liposomes. Liposomal vesicles, thus, acquired their ability for hemagglutination and lysis of chicken erythrocytes. The possibility of using these liposomes for transfer of alien agents into eucaryotic cells is discussed. PMID- 3842750 TI - [Characteristics of Bacillus thuringiensis phages with circular permutation in the DNA molecule]. AB - Bacteriophages Tm2 and Tg27 of different origins but identical in biological properties have been compared. Physicochemical characteristics of bacteriophages have revealed the existence of end repeats and circular permutation of phage DNA. Phages Tm2 and Tg27 share the same dimensions of incapsulated DNA, differing in the sizes of phage genome and end repeats. Bacteriophage Tm2 genome is 45.2 kb. long with the end repeats containing 5.7%. The genome of Tg27 is 42.53 kb and 11.8% of end repeat. The bacteriophages relation has been confirmed by heteroduplex and restriction analysis. Tm2 and Tg27 share 84% of homology. Two regions of nonhomology are found representing a single-stranded loop and equishouldered vesicle with the sizes 2.19 kb and 5.03 kb, respectively. PMID- 3842751 TI - [Study of the effect of parotitis vaccine on DNA repair in human lymphocytes]. AB - The effect of parotitis vaccine virus (strain L-3) on the DNA repair synthesis induced by 4-nitroquinoline-1-oxide has been studied. The efficiency of the repair synthesis depends on individual properties of the human body, viral multiplicity and concentration of the mutagen. A two-fold increase in DNA repair synthesis was obtained after infection of cells with low viral multiplicity (0.001 HADU50 per cell) and using 2.5 x 10(-7) M concentration of the mutagen A ten-fold increase in mutagen concentration affecting the infected cells was accompanied by the inhibition of DNA repair synthesis. Lymphocytes from children studied 7 days after vaccination by the attenuated virus did not reveal any changes in DNA repair synthesis as compared with the cells from nonvaccinated children. PMID- 3842752 TI - [Optimization of the transfer and incorporation of viral DNA into cells using liposomes conjugated with influenza virus glycoprotein]. AB - Liposomes connected with influenza viral glycoproteins increase by 1-2 orders the specific infectiousness of DNA from SV-40 or monkey adenovirus SA7 as compared with the one registered when the standard method of calcium precipitation is used. PMID- 3842753 TI - [Analysis of plasmids in Rhizobium meliloti strains of different geographical origin]. AB - The presence of 1-3 additional plasmids ranging from 16 to 400 Md in mol mass was revealed in bacterial cells besides a megaloplasmid in most of 34 Rhizobium meliloti strains studied. No correlation was found between plasmids pattern and geographical origin of isolation source of the strain analyzed. PMID- 3842754 TI - [Identification of monoclonal antibodies against protein E1 of venezuelan equine encephalomyelitis virus blocking the hemagglutinating but not the infective activity of virions]. AB - Cellular clone (MAK 14-7), producing antibodies against the virus of Venezuela equine encephalomyelitis (VEE), strain 230, was isolated using the standard hybridomata technology. Monoclonal antibodies neutralized the viral hemagglutinating activity leaving the infectious one intact. Monoclonal antibodies from MAD 14-7 reacted specifically with viral glycoprotein E1 as registered by the immunoprecipitation technique. The topography of antigenic determinants of viral E1/E2 glycoprotein dimer forming the virions outer spikes is discussed in connection with the results obtained. PMID- 3842755 TI - [Effect of Agrobacterium tumefaciens (Smith and Town). Conn. on the functional properties of human blood lymphocytes]. AB - Agrobacterium tumefaciens has been shown to affect the proliferation of intact lymphocytes as well as lymphocytes stimulated by PHA action. Inoculation of bacteria into the cultures of intact lymphocytes and incubation during 72 h resulted in increased incorporation of [3H]-thymidine into the DNA of cultivated cells. The bacteria are capable of inhibition of lymphocytes proliferation stimulated by PHA. PMID- 3842756 TI - [Isolation of mutant genes for human leukocyte alpha2-interferon by a method of localized mutagenesis]. AB - An efficient method to obtain the mutant genes for human leucocyte alpha 2 interferon (IFN) has been elaborated. The technique includes the following main stages: cloning of interferon gene in M13mp8 DNA; isolation of double-stranded hybrid DNA complex, containing IFN gene as a single-stranded fragment; selective modification of a single-stranded hybrid DNA by sodium bisulphite; the repair of hybrid DNA by DNA polymerase I from Escherichia coli, transformation of Escherichia coli JN103 cells by double-stranded circular DNA, containing the selectively modified gene IFN. The technique is based on the protection of bacteriophage M13 genome from mutagen induced damage by means of converting phage DNA into the double-stranded structure leaving the single-stranded fragment to be mutagenized prone to mutagen action. This is achieved by reannealing of single stranded M13mpB DNA hydrolyzed by restriction endonuclease BamHI. The technique preserves the infectiousness of vector DNA under the conditions permitting modification of up to 10% cytosine residues in IFN gene. Every clone resulting from transformation of Escherichia coli by modified DNA carried mutations in IFN gene, identified by sequencing after Sanger. PMID- 3842757 TI - [Spontaneous genetic transformation in Pseudomonas pseudomallei]. AB - Spontaneous genetic transformation has been registered in Pseudomonas pseudomallei cells. Transforming frequencies registered reach 10(-4)-10(-5). Spontaneous transformation has been simulated for Pseudomonas pseudomallei in soil. Intrageneric spontaneous transformation has been demonstrated to occur between Pseudomonas pseudomallei and Pseudomonas mallei. PMID- 3842758 TI - [Analysis of ribonucleoproteins of influenza virus containing genomic and complementary RNA]. AB - The density and sedimentation characteristics of ribonucleoproteins (RNP) containing genomic RNA from influenza virus and RNA complementary have been studied. Radioactive RNA from infected cells has been used for analysis. RNA classes of interest were isolated by reannealing with abundant nonradioactive genomic and complementary RNA and separation of resulting duplexes in electrophoresis. The RNP containing antigenomic virus-specific RNA are practically identical to "genomic" RNP for their sedimentation and density characteristics. The "plus" RNP is characterized by the stoichiometric mode of RNA protein interaction. PMID- 3842759 TI - [The problem of pesticide and heavy metal residues in plant-derived drugs used in the pharmaceutical industry]. PMID- 3842760 TI - [Combined action of phosphate removal and disinfection on urban sewage treated at a biological oxidation plant]. PMID- 3842761 TI - [Enteritis caused by rotavirus in adulthood and childhood. Case studies]. PMID- 3842762 TI - [Use of formaldehyde in the cosmetic field]. PMID- 3842763 TI - [Microbiological aspects of various dairy products produced in Campania]. PMID- 3842764 TI - [Statistics on gastrointestinal tumors in the 4 provinces of Abruzzo (1975-79)]. PMID- 3842765 TI - [Presence of volatile organic halogenated compounds in some water sources of northern Italy]. PMID- 3842766 TI - [Analysis of environmental risks in a tanning industry]. PMID- 3842767 TI - [Salmonella and Yersinia in the sewage of the city of Urbino]. PMID- 3842768 TI - [Non-01 Vibrio cholerae from the Arno at Pisa]. PMID- 3842769 TI - [Evaluation of the immune status in a female population sample 10 years after rubella vaccination]. PMID- 3842770 TI - [Staphylococcus aureus and epidermidis: incidence and antibiotic resistance in the Ospedale Policlinico di Perugia (1979-1981)]. PMID- 3842771 TI - Relationship between semivowels and vowels: cross-linguistic investigations of acoustic difference and coarticulation. AB - Formant frequencies of the semivowels /j/ and /w/ in Amharic, Yoruba and Zuni were measured in three vowel environments. Cross-language differences were found between what are described as the same semivowels, i.e. different languages have different acoustic targets for /j/ and /w/. These cross-language differences in semivowels correlate with cross-language differences in the respective cognate vowels /i/ and /u/. Nonetheless, the semivowels differ in systematic ways from the vowels in directions that make them more 'consonantal'. These languages also differ in their patterns of coarticulation between semivowels and adjacent vowels. This shows, inter alia, that palatal segments differ from language to language in their degree of resistance to coarticulation. Because of these language-specific coarticulatory patterns, cross-language differences in acoustic targets can only be established after careful consideration of the effect of context. PMID- 3842772 TI - On aspiration in Swahili: hypotheses, field observations, and an instrumental analysis. AB - Quantitative evidence to substantiate accounts of Swahili phonetics is scarce. In this paper, attention is drawn to the particularly complex feature of aspiration. A set of working hypotheses for experimental research are formulated. On the basis of field observations, aspiration is assumed to be operative at several levels of Swahili grammar. Contrary claims are reviewed and discussed in relation to informant selection and control methods for experimental procedures. A digital phonetic data base under current construction is outlined. Speech samples from the data base are used to quantify Swahili aspiration along the voice onset time dimension. The data suggest that the physical manifestation of the aspiration feature is relatively strong in Swahili as compared with Swedish. PMID- 3842773 TI - A perceptual study of the influence of pitch on the intelligibility of sung vowels. AB - A perceptual study of the influence of pitch on the intelligibility of vowels was carried out using a corpus containing all 15 French vowels sung by a professional soprano across her entire voice range. Four untrained subjects underwent identification tests whose results show statistically that vowel intelligibility is inversely proportional to pitch. A perceptual analysis based on confusion matrices revealed that intelligibility drops rapidly starting at the middle register. Classification of the confusions showed that incorrectly identified vowels tend to be confused with [a], most certainly because the shape of the vocal tract when in the upper register corresponds to that of the vowel [a]. PMID- 3842774 TI - The meiotic chromosomes of Creole cattle from Guadeloupe. PMID- 3842775 TI - [Relative efficacy of various kinds of traps for 3 species of Glossina present in Burkina Faso (G. morsitans submorsitans, G. tachinoides, G. palpalis gambiensis)]. PMID- 3842776 TI - The use of a herd simulation model for the estimation of direct economic benefits of tsetse control. Application to the pastoral zone of Sideradougou, Burkina Faso. PMID- 3842778 TI - Observations on colloid goiter of dromedary camels in the Sudan. PMID- 3842777 TI - [Control of digestive strongylosis in small ruminants in the French West Indies: development of benzimidazole resistance and value of the reasoned management of pastures]. PMID- 3842779 TI - [Note on the anatomo-pathological aspects and etiopathogenesis of the livers of cattle rejected at the S.G.A. abattoir of Lubumbashi (Zaire)]. PMID- 3842780 TI - [Pulmonary lesions in pigs sent to the abattoirs of Lubumbashi]. PMID- 3842781 TI - Colonial, biochemical and serological characteristics of Yersinia species isolated from animals in Nigeria. PMID- 3842782 TI - Production of enterotoxins by strains of Staphylococcus aureus isolated from camels in Nigeria. PMID- 3842783 TI - [Treatment and prospects for chemoprophylaxis of ovine cowdriosis with a long acting oxytetracycline]. PMID- 3842784 TI - Infectious drug resistance and antibiotic resistance curing in Salmonella and Shigella isolates from cases of diarrhoea. PMID- 3842785 TI - The effects of different sources of commercial rations on the humoral immune response of broilers to Newcastle disease vaccination. PMID- 3842786 TI - [Histologic grading of malignancy in epidermoid carcinoma of the larynx. Review of the literature and proposal of a structural grading]. PMID- 3842787 TI - Accountability of pathologists. PMID- 3842788 TI - Making chronic nonspecific dermatitis specific. How to make precise diagnoses of superficial perivascular dermatitides devoid of epidermal involvement. PMID- 3842789 TI - Nevi of connective tissue. A reappraisal of their classification. AB - Nevi of connective tissue may be conveniently divided according to clinical and pathologic presentations into two types, namely, the adventitial and the reticular. Nevi of adventitial connective tissue are usually small and situated on the extremities. They are characterized by accumulations of fibroblasts and apposition of collagen around adnexa and vessels. Nevi of reticular connective tissue are usually situated on the trunk. They consist of faulty distributions and amounts of collagen bundles, elastic fibers, or proteoglycans. PMID- 3842790 TI - Mycosis fungoides simulating acanthosis nigricans. AB - In this paper, an unusual papillomatous variant of the plaque stage of mycosis fungoides with clinical similarities to acanthosis nigricans is described. In contrast to the classic plaque stage of mycosis fungoides, the dermal infiltrates in this patient showed a rather monomorphous proliferation of blast-like cells that had little or no tendency to infiltrate the epidermis. PMID- 3842791 TI - Primary cutaneous atypical histiocytosis with possible dissemination. AB - Three unusual cases that were clinically suspected to be cutaneous malignant lymphomas were investigated by electron microscopy and enzyme cytochemistry. By conventional histology, a monomorphous infiltrate of medium-sized histiocytoid cells with occasional cytoplasmic vacuoles was seen. More characteristic was the ultrastructural finding of giant multivesicular bodies and pleomorphic granules in numerous neoplastic cells. These organelles seem to be closely related and to represent a market of a clinical entity. On cryostat sections some neoplastic cells were strongly positive, some weakly positive, and others negative for lysosomal enzymes (acid phosphatase, alpha-naphthyl-acetate esterase). Several cases with the same cytoplasmic structures and similarities in clinical presentations (disseminated cutaneous nodules and larger masses) and good responses to various modes of treatment (excision, x-ray irradiation, chemotherapy) have been described in the literature. However, a fatal course is also possible. PMID- 3842792 TI - A cystic teratoma in skin. AB - This is a report of a child who had a subcutaneous cyst that was filled with cornified cells and hair and lined by respiratory epithelium with seromucous glands and partly by squamous epithelium like that of the follicular infundibulum to which epithelial structures of adnexa were attached. The cyst wall was encircled incompletely by fascicles of mature smooth muscle. Differential diagnosis is discussed and cystic teratoma in skin is suggested as a proper term for the condition. PMID- 3842793 TI - The Cockayne syndrome--an inherited multisystem disorder with cutaneous photosensitivity and defective repair of DNA. Comparison with xeroderma pigmentosum. PMID- 3842794 TI - Poikiloderma. PMID- 3842795 TI - Enzyme electrode for urea with amperometric indication: Part I--Basic principle. AB - A novel method for amperometric determination of substrates of hydrolytic enzymes has been developed. As an example the pH dependence of electrochemical oxidation of hydrazine in the Tafel region was combined with the urease catalysed splitting of urea to construct an amperometric membrane electrode for urea. The characteristic features of this sensor are: a linear dependence of the current of hydrazine oxidation on hydrogen ion concentration (as opposed to the logarithmic response of potentiometric sensors), linear urea concentration-signal relationship between 0.8 and 35 mmol/litre sample concentration, a response time of about 20 s, a relative standard deviation of 1% and measuring frequency up to 40 samples/h with an electrode operational stability of 2 weeks. Calibration curves for aqueous urea solutions are given as functions of starting pH, urease and hydrazine concentration and the potential dependence of the signal was determined. PMID- 3842796 TI - As introduction to the concepts and technology of biosensors. PMID- 3842797 TI - Assessment of age-related acid aspiration risk factors in pediatric, adult, and geriatric patients. AB - One hundred inpatients scheduled for elective surgery were studied to determine the age-related risk of pulmonary aspiration as indicated by gastric acidity and volume. Twenty-five patients from 6 months to 12 years old were included in the pediatric age group, 50 patients from 18 to 64 years old were included in the adult age group, and 25 patients older than 65 years old were included in the geriatric group. Mean gastric pH was 1.99, 2.40, and 3.32 in the pediatric, adult, and geriatric age groups, respectively; the differences between the three groups were statistically significant. The proportions of patients with pH less than or equal to 2.50 were also significantly different among three groups: 92%, 76%, and 60% in the pediatric, adult, and geriatric age groups, respectively. Mean gastric volumes were 0.49, 0.37, and 0.24 ml/kg and proportions of patients with volumes greater than or equal to 0.40 ml/kg were 60, 32, and 12% in pediatric, adult, and geriatric patients, respectively. Gastric contents with both pH less than or equal to 2.5 and volume greater than or equal to 0.4 ml/kg were seen in 60, 28, and 12% in the three respective groups. Risk of acid aspiration pneumonitis theoretically is present in all age groups, with children being at greatest risk and geriatric patients with least risk. We have also noted a correlation between age and gastric contents because gastric acidity and volume both decreased as age increased. Increasing length of fasting period increased gastric acidity without significant effect on volume. PMID- 3842798 TI - Derivative 11 marker chromosome in bladder carcinoma. AB - Cytogenetic studies on bladder carcinomas from two patients were carried out on preparations obtained by a direct method. The chromosome mode was 49 and 55, respectively. Several karyotypic changes were found in the tumors. Moreover, the analysis of Q-banded chromosomes revealed the presence in both cases of a chromosome 11p+. These rearranged chromosomes showed a very similar banding pattern. The finding of a der(11) chromosome marker in two patients is intriguing, and suggests the possibility of nonrandom chromosome changes in bladder carcinoma, as already found in other kinds of tumors. The occurrence of chromosome #11 aberrations in tumors of the urinary tract is discussed in connection with the current theories on oncogenesis. PMID- 3842799 TI - Choline uptake, acetylcholine synthesis and release, and halothane effects in synaptosomes. AB - Synaptosomes isolated from rat cerebra were used as a model to study the effects of halothane on choline uptake and acetylcholine synthesis and release processes. Synaptosomes are membrane-bound particles that are formed by gentle disruption of brain tissue. These particles include the presynapse, cleft, portions of postsynaptic membrane, and all other components contained in brain nerve terminals necessary for neurotransmitter synthesis, storage, and release. Halothane (3% in air, vol/vol) caused a "competitive-like" inhibition of choline uptake in synaptosomes but had no effect on the enzymatic activity of choline acetyl-transferase (ChAT). Three percent halothane depressed synaptosomal acetylcholine (ACh) synthesis by 86% while ACh release from synaptosomes was inhibited 50%. It is suggested that halothane inhibits ACh synthesis by directly interfering with the carrier-mediated transport system of choline. Since halothane also inhibits ACh release, as well as choline uptake, it is probable that the anesthetic is acting upon more than one site in these cholinergic nerve terminals. These data require an interpretive evaluation that cannot fit the "unitary" hypothesis as the mechanism of action of general anesthetics. PMID- 3842800 TI - Prevalence of Dirofilaria immitis and Dipetalonema reconditum in greyhounds. AB - Blood samples from 331 greyhounds in the Hunter Valley and nearby coastal areas of New South Wales were examined for microfilariae using a filtration technique. Species were identified by histochemical staining; 10.9% of the greyhounds were infected with Dirofilaria immitis and 3.6% with Dipetalonema reconditum. The prevalence of infection of both species was significantly greater in summer than in winter (p = less than 0.05). Infection with D. immitis was correlated with differences in age, sex, bodyweight and coat colour, and a reported lack of stamina and the presence of a cough. No significant association was found. Diethylcarbamazine citrate was used for prophylaxis in 8.8% of all the greyhounds examined. PMID- 3842801 TI - Activation of liver branched-chain alpha-keto acid dehydrogenase in rats by excesses of dietary amino acids. AB - As part of an effort to explain the leucine-induced depressions of plasma isoleucine and valine concentrations, and the concomitant stimulation of valine oxidation in vivo, branched-chain alpha-keto acid dehydrogenase (BCKAD) activity was measured in livers from rats that were fed for only 6 h/d large quantities of individual amino acids in a low protein diet. Preincubation of homogenates with buffer containing Mg2+ and Ca2+ allowed estimation of fully active complex. Cytosolic and mitochondrial branched-chain-amino-acid aminotransferase (BCAAT) activities were also measured in livers of rats fed an excess of leucine. The percentage of BCKAD in the active form in livers of rats fed the low protein diet containing an excess of leucine, isoleucine, valine or phenylalanine for 2 d was double that of rats fed the low protein control diet (control, leucine, isoleucine, valine and phenylalanine groups having, respectively, 45 +/- 2, 85 +/ 7, 85 +/- 3, 95 +/- 5, and 81 +/- 4% of hepatic BCKAD in the active form). Consumption of a low protein diet containing an excess of leucine had no significant effect on either cytosolic or mitochondrial BCAAT activities of liver. The response of BCKAD in liver can contribute to the leucine-induced stimulation of valine oxidation in vivo but analysis of the results of this study leads to the conclusion that other mechanisms, probably in nonhepatic tissues, must also be involved. PMID- 3842802 TI - Glucocorticoid-induced reduction of poly(ADP-ribose) synthesis in cultured hepatocytes from chick embryo. PMID- 3842803 TI - An experimental study on intermaxillary fixation in the healing process of fracture of the condylar process of the mandible. PMID- 3842805 TI - The people vote on abortion funding: Colorado and Washington. PMID- 3842804 TI - Project Redirection: evaluation of a comprehensive program for disadvantaged teenage mothers. AB - An evaluation of Project Redirection, a two-year demonstration program designed to help pregnant teenagers and teenage mothers, shows that teenagers from a comparison group, who were not enrolled in the demonstration program, were significantly more likely than project participants to experience a repeat pregnancy after one year, but that after two years the difference was small and nonsignificant. Likewise, at 12 months into the program, the project participants proved more likely to be using contraceptives, but by 24 months the comparison group had caught up. After one year of participation, the project teenagers were more likely than the others either to be in school or to have graduated (56 and 49 percent, respectively). However, this differential also disappeared by 24 months. Nonetheless, even at that point, project teenagers who had dropped out prior to joining the program and those who had had a repeat pregnancy were more likely to be in school or to have completed school than were similar comparison teens. Project teenagers also were somewhat more likely to have held a job during the two-year period than were teenagers not enrolled in the program. All in all, the evaluation demonstrated that teenagers who participated in the project and remained in it for more than a year had consistently better outcomes in education, employment and repeat pregnancy than any other group had. Comparison teenagers who had never participated in any special program for pregnant teenagers, on the other hand, demonstrated consistently poorer outcomes than any other group. PMID- 3842806 TI - Late abortion and technological advances in fetal viability. PMID- 3842807 TI - Social and environmental factors influencing contraceptive use among black adolescents. AB - In 1979 survey among sexually active unmarried black adolescents from Chicago found that 28 percent of the young women and 18 percent of the young men used a contraceptive at first intercourse. Statistically significant differences in such contraceptive use among teenage women were found for three social and environmental characteristics: social class, parents' marital status and neighborhood quality. Thus, 41 percent of the young women from the highest social class used contraceptives at first intercourse, but only 17 percent of those from the lowest class did so. The proportions were 35 percent for young women from neighborhoods of high socioeconomic status and 17 percent for those from ghetto neighborhoods. Thirty-six percent of teenage women whose parents had intact marriages as of the adolescent's 11th birthday used contraceptives at first intercourse, compared with 23 percent of those from single-parent and divorced families. Among males, social class was the only one of these three characteristics that was statistically significant; 32 percent of adolescents from the highest class and 11 percent from the lowest practiced contraception at first intercourse. For teenagers of both sexes, career aspirations were of marginal statistical significance in the practice of contraception. Thirty-six percent of young women with high aspirations used contraceptives at first intercourse and 19 percent of those with low aspirations did so. Only four percent of the young men with low career aspirations used contraceptives, compared with 25 percent of those with high aspirations. Number of siblings, parental supervision of dating and having a sister who had become a teenage mother showed no association with contraceptive use.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842809 TI - The pill, chlamydia and PID. PMID- 3842808 TI - Parent-child communication and adolescent sexual behavior. AB - Data collected over a two-year period from more than 500 teenagers and their mothers indicate that neither parental attitudes toward premarital sex nor parent child communication about sex and contraception appear to affect teenagers' subsequent sexual and contraceptive behavior. Teenagers are often ignorant of their parents' attitudes toward sex-related issues, and they and their parents often contradict one another in describing the kinds of sex-related conversations they have had. In only two cases was a significant relationship found between communication and adolescent behavior: Girls whose mothers reported that they had discussed sex with their daughters were less likely to subsequently initiate coitus; and girls who reported that their mothers had discussed birth control with them were more likely to use effective contraceptives. However, the former association disappeared when it was the daughters who reported the communication, and the latter disappeared when it was the mothers who reported it. PMID- 3842810 TI - Increasing paternal responsibility. PMID- 3842811 TI - Teenage pregnancy. PMID- 3842812 TI - Primary prevention of coronary heart disease. Report on a WHO meeting. PMID- 3842813 TI - [Possible consequences of urban pollution caused by radio frequency]. AB - The AA. report the results of an inquest on the health effects of radio wave pollution in an area of Trieste, where television transmitters and broadcasting are installed. The following results were obtained: the measure of electromagnetic fields showed in the mentioned area a power density 10-100 times higher than that + in other zones of Trieste. According to present knowledge, the observed values of EM fields may have some psychological, behavioural and neurovegetative effects on exposed subjects. Clinical examination, integrated by the analysis of some seventy biochemical and functional parameters, showed nothing but minor changes of hypophyseal-suprarenal hormones and a relevant incidence of neurovegetative troubles. Some difficulties were found in the interpretation of psychological troubles, which may be reactive to broadcasting installation or secondary to radio wave exposure. PMID- 3842814 TI - [Toxicologic hazards at the endocrine level of heavy metals]. AB - The effects of heavy metals (in particular Pb, Cd, Cr, Mn and Hg) on pituitary, thyroid, adrenal gland, pancreas and gonads are reviewed. The effect of these metals on the CNS centers regulating endocrine function is emphasized. On this time, the reviewed data stress the importance of studying the mechanisms of preclinical damage and the biological markers of it. PMID- 3842815 TI - [Hypothesis of occupational etiology of Hodgkin's and non-Hodgkin's lymphoma: a case-control study]. AB - After a review of the research performed about the occupational hypothesis of malignant lymphoma's etiology, a personal interview schedule was used to study the occupational exposure among 89 patients with Hodgkin's disease and non Hodgkin's lymphoma and 89 referents. The agricultural workers only presented a significant relative risk for the malignant lymphoma as a whole and for non Hodgkin's lymphoma, but not for Hodgkin's disease; the results are confirmed by a matched pairs epidemiologic study. The possible etiologic factors connected with agricultural works are discussed. PMID- 3842816 TI - [Monitoring of occupational activities under the risk of heat stress: use of mathematical models in the prediction of physiological parameters]. AB - Some authors proposed mathematical models that, starting from standardized conditions of environmental microclimate parameters, thermal impedance of the clothing, and energetic expenditure allowed the forecast of the body temperature and heart rate variations in respect to the basal values in subjects standing in the same environment. In the present work we verify the usefulness of these models applied to the working tasks characterized by standardized job made under unfavourable thermal conditions. In subject working in an electric power station the values of the body temperature and heart rate are registered and compared with the values obtained by the application of the studied models. The results are discussed in view of the practical use. PMID- 3842817 TI - [Dynamic electrocardiographic study of a group of urban bus drivers]. AB - On the initiative of Preventive Medicine promoted by the Genoa Urban Transport Company, authors carried out an inquiry of dynamic electrocardiography by Holter during the normal working activity of a group of 95 drivers. It was observed mean value of heart rate of 86.23 +/- 10.08; moreover patients with more working seniority shown a lesser increase of the pulse rate with statistical difference as compared with other groups. In any case we don't observe any change of ventricular repolarization. PMID- 3842818 TI - [Evaluation of oxygen consumption and other cardiorespiratory parameters measured during the execution of 3 types of muscular exercises used in respiratory kinesitherapy]. AB - Oxygen consumption (VO2) and other cardiorespiratory parameters (pulmonary ventilation, tidal volume, respiratory rate, alveolar ventilation, heart rate) have been measured in 10 healthy subjects (20-40 years old) while performing 3 respiratory exercise (abdominal muscles reinforcement, scapulo-humeral articulation movements and chest expansion). The performance of the abdominal muscles reinforcement exercises requires the highest oxygen consumption. The 3 exercises decrease the "Dead space/Tidal volume" ratio and increase the alveolar ventilation. PMID- 3842819 TI - [Return to work and cardiovascular status after myocardial infarction]. AB - 110 male subjects, under 60, admitted for myocardial infarction in 1980 and 1981, have been considered. 85 answers to the questionnaire, sent by post have been obtained, 6 pertaining to patients who died in the meanwhile. Among the 79 living patients who replied, 57 (72.1%) had resumed work within the average time of 4.8 months (min. 0.5-max. 12). Return to work has been significantly higher among self-employed people than employees; only 15 subjects had changed job or task. The subjective rating of the actual health status, two years after the infarction, has been satisfactory in 90.5% of cases, in spite of 56.5% complaining of heartburn, 38.1% of dyspnea and 35.7% of palpitation. The work load has been rated as tiring only by 12.6% of them, while 65.6% have maintained unchanged their work capacity. Electrocardiographic monitoring (by the Holter method), during a normal workday, showed no significant differences between working and retired subjects and, also, in work and normal activity periods. 19 subjects (47.5%) presented ventricular arrhythmias, in 12 cases at high risk, most of them being unaware of it. These arrhythmias were more frequent during wake periods, but not strictly connected to the type and the quality of the work activity. The patients subjected to rehabilitation showed no differences in the cardiovascular patterns during the ergometric test and ECG monitoring when compared to those not subjected to rehabilitation. PMID- 3842820 TI - [Pneumoconiosis in bauxite miners]. AB - The authors examined a group of 40 miners who were being working at an Apulian bauxite mine, presently inactive. Radiographic findings of pulmonary micronodulation without significant reduction of lung functions were showed in 15 miners. Mineralogical analysis of mine dust samples excluded any presence of more than 1% free silica. As a result of this study hypotheses have been formulated about pathogenesis of this moderated and non-invasive pneumoconiosis, showed in long exposed subjects to low silica content dusts. PMID- 3842822 TI - [Capillaroscopic and clinical correlations in chronic occupational radiodermatitis]. AB - 72 patients (69 M, 3 F) occupationally exposed to X-rays were subjected to a clinical and capillaroscopic evaluation so as to determine the morphological changes occurring within the skin and the microcirculatory system. The two parameters were correlated showing that microvasal lesions appear before clinical signs become evident. Therefore, the authors underline the importance of adding periodic capillaroscopic exams to the clinical control in order to prevent the occurrence of occupational chronic radiodermatitis. PMID- 3842821 TI - [Exposure to acetone: experimental study of absorption and pulmonary elimination in normal subjects]. AB - Alveolar (CA) and mixed expired air (CE) acetone concentrations were measured in 15 healthy volunteer subjects, exposed to acetone (CI) in an exposure chamber (exposure range: 48-565 mg/m3) both at rest and during exercise (50 W). The Relative Uptake (R = 1-CE/CI) was 0.54 at rest (120' and 240') and 0.55 during exercise (120', 50 W). Ca:CI ratio was 0.24 at rest. CE:CI and CA:CI ratio was constant throughout the exposure time, both at rest and during exercise. PMID- 3842823 TI - [Characteristics and definition of stress in subjects exposed to video display terminals: evaluation of urinary excretion of catecholamines and euglobulin lysis time in a group of VDT operators]. AB - Occupational stress is defined and the main problems involved in the study of stress in VDT operators are pointed out and discussed. A preliminary research is presented, in which urinary catecholamines and fibrinolysis are tested in a group of VDT telephone operators. Basal values are compared with data obtained after a work shift. No evident difference appears from this evaluation. PMID- 3842824 TI - [Work with video display terminals: evaluation of psychosomatic aspects in a group of VDT operators]. AB - The prevalence of psychosomatic symptoms in a group of VDT telephone operators is evaluated and compared with a control group (people not working at VTDs), by using questionnaires. The results show that psychosomatic symptoms are much more frequent in VDT operators in comparison with the control group. PMID- 3842826 TI - Proprioceptive reflexes in exodeviations. PMID- 3842827 TI - Tear film break up time (B.U.T.) in non-contact lens wearers and contact lens wearers in normal Indian population. PMID- 3842825 TI - [Ocular fatigue syndrome in subjects exposed to video display terminals: definition and evaluation in a group of VDT operators]. AB - The incidence of the "ocular fatigue syndrome" in a group of VDT telephone operators is evaluated and compared with a control group (people not working at VDT), by using questionnaires. The results show that the "ocular fatigue syndrome" is much more frequent in VDT operators in comparison with the control group. PMID- 3842828 TI - Management of postoperative choroidal detachment. PMID- 3842829 TI - Changes in the corneal endothelial cell count as a function of age. PMID- 3842831 TI - Study of mycotic keratitis. PMID- 3842830 TI - Effect of timolol on intra-ocular pressure in the presence of systemic propranolol in healthy subjects. PMID- 3842832 TI - Orbital mucormycosis (phycomycosis) (a survival with amphotericin-B and potassium iodide). PMID- 3842833 TI - Noma--a case report. PMID- 3842834 TI - An observation on pathological changes of lacrimal sac in chronic dacryocystitis. PMID- 3842835 TI - Unusual presentations of Nevus of Ota. Case reports. PMID- 3842836 TI - Malignant melanoma of conjunctiva following surgical excision of naevus. PMID- 3842837 TI - Unusual cases of molluscum contagiosum of eye. PMID- 3842838 TI - Part- vs full-list performance on the NST by normal-hearing and hearing-impaired adults. AB - Performance-Level functions were determined for part- and full-list Edgerton and Danhauer (1979) Nonsense Syllable Test (NST) mean scores of 15 normal-hearing (NH) and 15 mild-to-moderately hearing-impaired (HI) Ss. In the first part-list procedure S received 5 different items from the 25-item NST List A at each ascending SL (25, 35, 45, 55, and 65 db re: S's better-ear SRT), while in the second, full-list, procedure S received the full 25 items. As previous studies had shown, the NST could be used to distinguish the NH and HI groups. The P-L functions were not significantly different for the part- vs the full-list procedures except at the 35 and 55 db SLs in which the part-list scores tended to overestimate those from the full list for both groups, to a maximum difference in percent correct of about 7%. Clinical implications are presented. PMID- 3842839 TI - Monaural and binaural adaptation in sequence: SDLB analogue? AB - Magnitude estimates (M.E.) of loudness of a 1-kc/s tone in the R ear at 60 db SPL were required over three 3-phase sessions from 15 normal-hearing young adults. The initial tone in the session was arbitrarily assigned a value of "60 units" in instructions to the S. The session was arranged to be analogous to that commonly used in Simultaneous Dichotic Loudness Balancing (SDLB). In a baseline Phase I in any of 3 sessions both ears received identical, simultaneous, intermittent stimulation. In each session, one of 3 duty cycles (randomized) were used (all on times of .5 sec, off-times of .5, 4.5, or 24.5 sec). An M.E. judgment was requested every 10 sec for just over 1 min. Then immediately in Phase II the L ear received nothing while the R ear received continuous stimulation at 60 db SPL for 7 min, with M.E. Judgements requested every 10 sec during Min 1 and every min thereafter. Then in Phase III the R ear continued to receive continuous stimulation at 60 db SPL for 1 min while in the contralateral ear the condition of Phase I was re-introduced. M.E. loudness judgements for the R ear were requested as in Phase I. During Phase I there was, as expected, no loudness adaptation. During the adapting Phase II, M.E. group values declined progressively and significantly, but without significant differences among duty cycles. M.E. values in Phase III continued to decline significantly even though the contralateral ear was being given intermittent stimulation (irrespective of duty cycle). Previous studies had found that, for most listeners, M.E. loudness adaptation does not occur when the continuous stimulation is presented by itself. As far as is known, the present study is the first M.E. loudness adaptation study to present binaural intermittent stimulation before the continuous monaural stimulus. It is suggested that the redundancy of the continuous monaural stimulation, in comparison with the similar intermittent stimulus, is associated with the diminution of loudness. PMID- 3842840 TI - Preyer reflex in jaundiced rats: central auditory effects. AB - Normal control rats (N:45) and 27 genetically hyperbilirubinemic rats from an NIH colony were tested for the Preyer reflex (Pr) threshold using pure tones. About half of all animals (N:39) were tested at 4, 6, and 8 kc/s only, while 39 were also tested at 10, 15, 20, 25, and 30 kc/s. Data were not included from 3 jaundiced rats who died during the study, which began when Ss were 3 wks old. Some jaundiced rats differed from control rats in their elevated Pr thresholds for mid-frequency tones (approximately 10 kc/s) (group mean threshold difference of 6.4 db (p less than .05). Since jaundiced rats have been shown to have extensive damage in the first brain-stem synapse, neural dysfunction can be inferred. The Pr of jaundiced rats did not differ from normals at frequencies below 10 kc/s. Normal low-frequency sensitivity in jaundiced rats likely represents a tonotopic vulnerability gradient in the central auditory pathway. PMID- 3842841 TI - The effects of time compression on the auditory processing abilities of learning disabled children. AB - This study measured the ability of ten 8- and ten 12-yr-old learning disabled (LD) children of normal intelligence (WISC-R) to discriminate phonemic contrasts in sentential stimuli (Subtest 13 of the Carrow Auditory Visual Abilities Test) presented at a 50% time-compression rate. Their group responses were compared statistically to similar data gathered earlier (May et al, J. Aud. Res., 1984, 24, 205-211) from 6-, 8-, and 10-yr-old normal children and young adults. LD Ss exhibited auditory processing capacities reminiscent of an earlier level of operation (e.g., the group of LD Ss with mn age of 12.8 yrs yielded group performance equivalent to that of normal 6- and 8-yr-olds), and also manifested marked differences in their feature- and frequency-processing abilities. These data indicate that contributing to the learning difficulties of LD children may very well be delays in auditory development and anomalies in auditory-feature processing. PMID- 3842842 TI - Hearing loss in the developmentally handicapped: a comparison of three audiometric procedures. AB - Moderately (N:61) and profoundly (N:103) retarded or developmentally handicapped residents of a large institution were assessed using three audiometric procedures: behavioral observation audiometry (BOA, both speech and tonal), acoustic reflex measures (SPAR), and brain-stem auditory-evoked responses (BSAER) audiometry. The purpose was to compare the three methods to determine whether a battery of tests might provide a more accurate assessment of this "difficult to test" population. The investigation also looked at the relationship between hearing loss and level of retardation; there was no evidence of such a relationship in the residents of this institution. Results indicated that a battery of tests does help eliminate gaps in testing common to this group, and further that BSAER audiometry, an objective method not affected by behavior or development, may provide the most accurate means of assessing the hearing status of individuals who are profoundly developmentally handicapped. PMID- 3842843 TI - Distinctive-feature analyses of the speech of deaf children. AB - 22 children aged 8.5 through 15.5 yrs with HTLs greater than or equal to 90 db in the better ear spoke a carrier phrase before each of 41 monosyllables containing each an initial and a final consonant (23 consonants were represented). Each S repeated the 41-word list 10 times. Speech samples were recorded simultaneously but independently in audio-only and in audio-visual modes, and transcribed by 3 judges using each mode separately. Percent correct speaker-subjects' utterances of target consonants in initial and in final word-positions were scored for presence or absence of distinctive features according to the systems of Chomsky and Halle (1968) and of Fisher and Logemann (1971). Consistently higher correct feature usage was noted for target consonants in the initial rather than in the final word-position for both systems. Further, higher scores were obtained when transcribers could see as well as hear the speaker, but correct usage of a feature was not uniformly a function of the visibility of that feature. Finally, there was no significant increase in correct feature usage as a function of speaker age. PMID- 3842844 TI - A case study of central processing following long-standing unilateral conductive hearing loss. AB - This single-subject study reported the audibility and speech-processing performance of a man who at age 22 had an impacted foreign body removed from the bony portion of his L ear canal, it having been there since about age 7. Otologic and audiologic assessment, records of failing school screening, and subject and family history agreed on an uncomplicated conductive hearing level of 30-40 db. Immediately on removing the block, audiograms and tympanograms were normal (HTL less than or equal to 20 db at .25-8 kc/s) and remained so for the 14 mo of the study. At 8 days and at 5 and 14 mo post-blockage, a speech-in-noise test at 50 db HL, at S/N's of 30, 20, 15, 10, 5, and 0 db was administered along with the SSW test. At 8 days, S-in-N scores (compared to 10 in-house normal controls) were abnormally low in both ears, but especially in the L ear (e.g., at S/N = 0, L ear score was only 8% correct compared to the controls' 86.4%). Distinct improvement occurred at 5 and further at 14 mo, but at 14 mo both ears were still yielding scores 1 S.D. below the control mean. Similarly, SSW scores were abnormal for both ears; at 5 mo post-blockage the L ear still yielded abnormal scores, but yielded normal scores at 14 mo post-blockage. It may be concluded that a unilateral conductive hearing loss, even though contracted well past the age thought to be crucial in auditory perceptual development, may have a deleterious effect on auditory processing of stimuli entering not only the attenuated but also the normal ear, and that though this deleterious effect may eventually be overcome it may require a surprisingly long time for it to disappear. PMID- 3842845 TI - Milk lipoprotein lipase distribution in the major fractions of bovine milk. AB - Raw, bovine bulk tank milk and milks from selected cows were separated by ultracentrifugation into four major fractions: casein, sloughed membrane material, serum, and milk fat globule membrane. Milk lipoprotein lipase activity was measured by the pH stat method and protein determinations were made by the Lowry procedure for each of the four fractions in order to calculate specific activity (units per milligram of protein). In six farm-cooled bulk milk samples stored less than or equal to 24 h, casein had a significantly higher milk lipoprotein lipase total activity, 35.66 units/ml of milk, than all of the fractions. Serum had the next highest activity with 11.69 units/ml of milk. Fluff and milk fat globule membrane had activities of .80 and .41 units/ml of milk, respectively. The specific activity of the fluff was 3.3 milk lipoprotein lipase units/mg of protein, which was significantly higher than the casein and serum fractions in pooled milk. Milks from five cows in midlactation were assayed individually for milk lipoprotein lipase activity and protein content immediately after milking and after 12, 24, 48 and 72 h of cold (4 degrees C) storage. Fresh warm milk was characterized by the absence of fluff. Casein had the highest mean activity (29.91 units/ml), followed by serum (10.25 units/ml) and milk fat globule membrane (.26 units/ml) in the warm milk from the individual cows. Upon cooling to 4 degrees C, significant increases in enzyme activity in the fluff and milk fat globule membrane fractions were observed at 12 h.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842847 TI - Detection of vegetable oil adulteration in ice cream. AB - This study was to demonstrate the application of various analytical methods to the detection, identification, and quantitation of vegetable oil adulteration of ice cream. Total fat content, sterols, long- and short-chain fatty acids, vitamin E, Reichert-Meissl values, and Polenske values were measured in ice cream. All methods except total fat determination were capable of detecting vegetable oil adulteration. Sterol determination was the most effective and versatile measurement because it provided information not only on the detection and extent of adulteration but also on the possible identity of the adulterant. PMID- 3842846 TI - Physiological and pathological factors influencing bovine alpha-lactalbumin and beta-lactoglobulin concentrations in milk. AB - Bovine alpha-lactalbumin and beta-lactoglobulin concentrations were determined by radial immunodiffusion in 354 milk samples from uninfected and 98 samples from infected quarters from 42 Holstein-Friesian cows taken at 30, 150, and 270 days of lactation. alpha-Lactalbumin and beta-lactoglobulin concentrations were not affected by quarter location. The alpha-lactalbumin decreased at the end of lactation and in samples collected beyond second lactation. The beta lactoglobulin concentration increased with stage of lactation. There was a positive correlation between alpha-lactalbumin and beta lactoglobulin (r = .12). Milk from uninfected quarters had mean alpha-lactalbumin and beta-lactoglobulin concentrations of 1.47 and 4.6 mg/ml, respectively. Milk from quarters infected by major pathogens or Corynebacterium bovis had less alpha-lactalbumin. Milk from quarters infected by minor pathogens had less beta-lactoglobulin. There was a negative correlation between alpha-lactalbumin concentration and somatic cell count (r = .31), which was amplified by infection status of quarters. No correlation was noted between somatic cell count and beta-lactoglobulin concentration when considered over the whole sampling period, but the correlation became negative in quarters infected by major pathogens. PMID- 3842848 TI - Effect of dose of bovine growth hormone on lactation of dairy cows. AB - We administered bovine growth hormone to six Holstein cows in a Latin square design to study the relationship between dose of growth hormone and response of milk yield. Treatments were 0, 5, 10, 25, 50, and 100 IU/day of pituitary-derived bovine growth hormone administered in once-daily subcutaneous injections. Feed intake and yield of milk and milk components were measured for the last 5 days of each 10-day injection period. Yields of milk, protein, and fat increased in a dose-responsive fashion up to 32, 27, and 46% (for the 100 IU treatment) above control (26.7, .90, and .98 kg/day). Concentration of lactose in milk was not influenced by treatment, but at larger doses of growth hormone, milk fat percent was elevated and protein percent declined. As a result, milk energy secretion in response to 100 IU/day was increased 37% from control (19.2 Mcal/day). Both energy and nitrogen balance decreased with increasing growth hormone. Limited blood samples (timed to coincide with peak concentration of growth hormone postinjection) indicated treatment did not affect concentrations of glucose or insulin in blood plasma but increased concentration of growth hormone. Concentration of nonesterified fatty acids in blood plasma was increased slightly only at the 100 IU/day dose for which energy balance was negative. PMID- 3842850 TI - Effect of growth hormone on milk yields and related physiological functions of Holstein cows exposed to heat stress. AB - Responses of milk production and other physiological functions to daily subcutaneous injections of bovine growth hormone (16.6 mg/cow) were studied in six Holstein cows in midlactation under environmental heat stress. Five days were assigned for each treatment of thermoneutral (18.3 degrees C), heat (28.9 degrees C), heat plus growth hormone, and heat. Each period was preceded by at least 3 days of adjustment. Feed and water were available ad libitum. Feed intake, milk production, and rectal temperature were measured twice daily. Blood, energy metabolism, and body weight were measured every 1st, 3rd, and 5th day of each period. Administration of growth hormone under heat stress increased milk production by 3.8 and 12% and fat yield by 9.5 and 12.7% over heat and heat. Feed intake declined by 5.8% with no significant increase of heat production or body weight loss during treatment with bovine growth hormone. Heat increased somatic cell concentration. PMID- 3842849 TI - Prolactin in bovine milk near the time of calving and its relationship to premature induction of lactogenesis. AB - Twenty-three primiparous heifers and pluriparous cows were milked once daily beginning 3 to 10 days before parturition. Retrospectively, they were divided into groups representing either successful or unsuccessful premature induction of lactogenesis, depending on milk production prior to calving. Successfully induced animals had prepartum milk yields greater than 4 kg/milking and unsuccessful animals yielded less. Ten of 23 animals satisfied the criterion for successful premature induction at 2.6 +/- .4 days before calving and 3.6 +/- .8 days after first milking and had peak prepartum yields of 7.9 +/- .7 kg/milking. Total number of prepartum days milked did not differ between successful and unsuccessful groups. Greater milk yield prepartum was significantly associated with higher milk prolactin concentration on days -6 to -4. Heifers had less milk yield than cows but did not differ in milk prolactin concentration or in total prolactin per milking. Premature induction of lactogenesis did not confer significant lactational benefits for more than 1 day postpartum or over the first 35 days postpartum. Premature induction of lactogenesis as a result of prepartum milking did not, as hypothesized, decrease the ability of mammary secretions to accumulate prolactin in large amounts. All groups rapidly lost this ability after parturition, suggesting that the hormonal environment of late pregnancy may promote the transfer of prolactin from blood into milk when there is regular removal of prepartum milk. PMID- 3842851 TI - Effect of photoperiod on milk yield and milk fat in commercial dairy herds. AB - Two hundred and sixteen cows stanchioned in 13 dairy herds were exposed to supplemental lighting of 16 to 16.25 h of light per day from fluorescent lamps, whereas 240 herdmates received only sunlight (9 to 12 h/day) plus lighting for usual management activities (e.g., milking and feeding). After adjustment for differences in stage of lactation, lactation number, mature equivalent, and pretrial milk yield, cows exposed to supplemental lighting produced 2.2 kg per day more milk and had .16% less milk fat than herdmate controls. PMID- 3842852 TI - Effects of feeding monensin sodium to lactating goats: milk composition and ruminal volatile fatty acids. AB - When diets containing 33 and 18 ppm monensin sodium were fed for ad libitum intake to dairy goats, milk fat content was reduced by 15 and 5%. Milk protein content was increased 10% when 33 ppm sodium monensin was fed with diet at restricted intake. Milk yield was not affected. Both ad libitum and restricted consumption of diet containing 33 ppm monensin sodium reduced ratios of ruminal acetate:propionate. These resulted from increased propionate concentration with ad libitum consumption and from reduced acetate with restricted feeding. Diets containing 18 ppm monensin sodium resulted in slightly higher concentrations of both propionate and acetate. Monensin sodium did not reduce feed intake significantly. PMID- 3842853 TI - Thyroxine, triiodothyronine, reverse-triiodothyronine, and other physiological characteristics of periparturient cows fed restricted energy. AB - Eighty-six cows were assigned to two equal groups with group A fed according to National Research Council recommendations for total digestible nutrients for the 8 wk before parturition and group B was fed 21% higher energy in the first 6 wk and 15% higher in the last 2 preparturient wk. Thyroxine in blood serum decreased in both groups 14 days before and on the day of delivery. It was significantly lower in group A. Findings were similar with triiodothyronine. Blood serum concentrations of reverse-triiodothyronine of group A was significantly higher in group A on day 28 and 14 than group B before delivery. Energy intake had little influence on the serum concentrations of other constituents (albumin, total protein, immunoglobulin G, total and free cholesterol, nonesterified fatty acids). Restricted energy intake that does not alter thyrotropin-thyrotropin releasing hormone secretion results in higher rate of production of reverse triiodothyronine and in decreased serum concentration of triiodothyronine. Slight changes of energy balance might be indicated readily by reverse-triiodothyronine concentration in blood serum. PMID- 3842854 TI - Measurement of water kinetics with deuterium oxide in lactating dairy cows. AB - Following intravenous infusion with approximately 300 mg deuterium oxide per kg body weight, blood was drawn from lactating Holsteins (Trial 1, n = 4, and Trial 2, n = 5) at suitable intervals for up to 12 days while the cows were maintained on dietary regimens to which they were well adapted. Time results for deuterium oxide concentration in blood were described best by the three-compartment open model system, which showed that the central, shallow peripheral, and deep peripheral body water compartments contained 27.1, 25.0, and 23.2% body weight in trial 1 and 33.7, 27.1, and 19.9% body weight in trial 2. Total body water estimates averaged 75.3 and 80.7% body weight during trials 1 and 2. Estimates for biological half-life of water were 4.6 and 3.2 days and those for water turnover were 68.9 and 109.7 liters/day, respectively. The data fitted the two compartment open model system when observations made prior to 25 min post administration were excluded from the analyses, because the central and shallow peripheral compartments were apparently lumped into one. Blood sampling at 0.5, 1, and 1.5 days following infusion and thereafter at 1-day intervals was adequate for the estimates of the one compartment open model system. Estimates of total body water, water biological half-life, and water turnover were similar for the different models. It is concluded that the three-compartment open model provides greater detail and insight into the water dynamics of lactating dairy cows having regular access to food and water, whereas the two- and one-compartment open model systems provide good approximations only. PMID- 3842855 TI - Effect on feed intake of infusing sodium propionate or sodium acetate into a mesenteric vein of cattle. AB - Solutions containing sodium propionate or sodium acetate were infused into a mesenteric vein of eight steers in order to examine the effect of increasing the entry rate of these metabolites on feed intake. Infusion of propionate inhibited feed intake to varying degrees, but acetate infused at equivalent rates had no effect. Rate of entry of propionate into the visceral circulation may be a physiological mechanism for controlling feed intake in cattle, but it is mainly effective when the animal has eaten close to its voluntary maximum intake. PMID- 3842856 TI - Apparent digestibilities of diets varying in ratios of forage to concentrate and quality of forage at two intakes by dairy cows. AB - In four digestion trials we measured effects of feed intake and forage quality on apparent digestibility of dietary components. Trials 1 and 2 utilized four mixed diets containing either 30 or 50% concentrate blended with either early or normal cut alfalfa hay. Trials 3 and 4 utilized two straight hay diets of early and normal cut hay. High and low feed intakes were determined for lactating and dry cows. Cows in trial 1 digested diets to the same extent regardless of intake or ratio of forage to concentrate. Digestibility of dry matter for early cut diets was higher than for normal cut diets (67.4 versus 61.5%). In trial 2, digestibilities of dry matter were higher for low concentrate than for high concentrate diets (60.8 versus 56.9%) and for dry than for lactating cows (60.7 versus 57.6%). Age of cut had no effect in trial 2, which had unexpected slightly higher fiber in early cut diets. In trials 3 and 4, digestibility of dry matter was higher for early than normal cut hay (64.0 versus 61.2%) and for dry than lactating cows (63.4 versus 62.1%). Depression of dry matter digestibility with intake in trials 2, 3, and 4 ranged from .4 to 1.6 percentage units per intake above maintenance and was related to cell wall components. Age of cut was the most important factor affecting digestibility. PMID- 3842857 TI - Effect of lint on whole cottonseed passage and digestibility and diet choice on intake of whole cottonseed by Holstein cows. AB - Effects of rolling whole linted cottonseed and whole acid-delinted cottonseed on whole seed passage and digestibility were determined using 24 lactating Holstein cows. Whole seed passage averaged .74% in all cows fed whole linted seed during the standardization period and .45% in 6 cows fed whole linted seed during a comparison period, contrasted to 11.3% in 6 cows fed acid-delinted seed. Digestibility of ether extract was less in the 6 cows fed whole acid-delinted cottonseed. No advantage was for rolling whole linted cottonseed before feeding, but rolling was beneficial for whole acid-delinted cottonseed. Individual consumption of whole linted cottonseed by 18 nonpregnant, dry Holstein cows varied from .04 to 5.05 kg/day when two-choice options were given for cottonseed versus chopped coastal bermudagrass hay or corn silage, or a complete ration of 75% corn silage and 25% concentrate. No indication of gossypol toxicity was seen, but the large variation in each choice situation suggests it is desirable to blend cottonseed with other ingredients to ensure more uniform consumption. PMID- 3842858 TI - Nutritive value of potato processing wastes in total mixed rations for dairy cattle. AB - The nutritive value of wet potato processing waste for dairy cattle was determined in two experiments. In Experiment 1, rations contained, on a dry matter basis, 0, 10, 15, and 20% potato waste and were substituted for high moisture corn in diets for 32 lactating Holstein cows for 12 wk. Substituting potato waste for corn did not significantly affect milk yield, milk composition, milk production persistency, or dry matter intake. Cows fed 20% potato waste tended to decrease in milk fat percent and to shift molar proportions of rumen volatile fatty acids toward a decrease in acetate: propionate ratio. In Experiment 2, six steers were used in a 3 X 3 Latin square design to test digestibility and nitrogen utilization of potato waste substituted for high moisture corn at 0, 10, and 20% of the ration dry matter. A second group of four steers with rumen fistulas were used in a 4 X 4 Latin square to test rumen fermentation parameters. Diets contained 0, 10, 20, and 30% potato wastes and were similar to Experiment 1. Potato waste did not significantly affect digestibility of crude protein or dry matter, but at 20% substitution digestibility of acid detergent fiber decreased. Rumen ammonia, acetate, acetate to propionate ratios, and total volatile fatty acids were lower at high intakes of potato waste and pH was increased. The shift in rumen fermentation when large amounts of potatoes were fed explains the depressed butter fat on these rations. PMID- 3842859 TI - The effects of different levels of dietary lead on zinc metabolism in dairy calves. AB - The effects of feeding diets containing 500 or 1500 ppm added lead as lead sulfate on zinc and zinc-65 metabolism in Holstein bull calves were investigated. Zinc absorption was slightly (not significantly) reduced in the calves fed lead. Fecal zinc excretion was increased by the lead diets by day 24 of the experiment. Dietary lead had no significant effect on zinc in blood. Except for the tibia, muscle, and brain, stable zinc decreased in all tissues of calves fed the 1500 ppm lead diets, and differences were significant in pancreas, heart, and testicle. A significant decrease was noted in pancreatic zinc in pancreas of calves fed 500 ppm lead. Tissue zinc-65 concentrations were decreased significantly by lead in the tibia and muscle. Intestinal tissue zinc was not affected materially by lead. Dietary lead had very little effect on cellular distribution of zinc in the liver and kidney. In the mucosal cells of the small intestine, lead increased zinc-65 in the cytosol while decreasing it in the crude nuclear fraction. This effect occurred in a linear fashion in all three sections of the small intestine as dietary lead increased. PMID- 3842860 TI - Observations on sire evaluation with categorical data using heteroscedastic mixed linear models. AB - The ability of three mixed linear models to rank sires correctly for dichotomous and ordered tetrachotomous traits was studied using simulated half-sib progeny data. The models differed in the assumptions made regarding homogeneity of residual variance. Ranking ability was assessed by estimating the realized response to truncation selection (20% of the candidates selected) upon sire evaluations in populations consisting of 50 such sires. Results suggested that weighting for unequal residual variances, in spite of reducing apparent prediction error variance, impairs the ability of best linear unbiased prediction to identify superior sires. This is consistent with theoretical arguments stemming from threshold models. PMID- 3842861 TI - Variance-covariance components associated with trimester yields of milk and fat and multiple trait sire evaluation for trimester yields. AB - Genotypic and phenotypic variances and covariances for milk and fat yields of three equally-spaced intervals in first lactation, days 1 to 90, 91 to 180, and 181 to 270, were estimated from 26,523 records of initial progeny-test daughters of 2,086 Holstein sires. Henderson's method 3 was used with a model that included fixed herd-years, fixed age-month of freshening, and random sire and residual effects. Heritabilities for milk yields were .21, .21, and .13 for the first, second, and third 90 days in lactation and for fat yields were .19, .16, and .10. Heritabilities for milk and fat yields over the entire 270 days postpartum were .22 and .22. Genetic correlations among partial yields were high and ranged from .74 to .99 for milk and .86 to .99 for fat. Genotypic and phenotypic variances were used to predict breeding values for trimester milk yield by multiple trait, mixed model procedures for 3,797 Holstein artificial insemination sires from 283,900 first-lactation milk records of their daughters during the first 90, second 90, and third 90 days in lactation. Correlations among proofs for the three trimesters ranged from .85 to .94. Correlation between the sum of three trimester multiple trait proofs and proof for milk yield for 270 days of lactation from single trait analysis was .99. Correlations among proofs indicate sires may rank differently for milk yield in the three periods. PMID- 3842862 TI - Effects of days open on annualized milk yields in current and following lactations. AB - Length of open period affected annualized yield [(total lactation yield/calving interval) 365]. Yield was maximum with more days open for low, as opposed to high, peak production and for primiparous, as opposed to multiparous, cows. Interactions with days open were not found for mean herd production or cow production relative to the herd mean. Number of days open for maximum yield was similar for milk, fat, and economically fat-corrected milk [.67 kg milk + 10 kg fat]. Correction factors were derived by smoothed least square means of days open classes. Additive adjustment factors were more appropriate than multiplicative adjustment factors. Records adjusted for days open were not able to predict the following lactation yield significantly better than unadjusted records. Cumulative yield of current and following annualized lactations, including the contribution of the calf expressed in units of milk production, was greatest at 117 and 98 days open for primiparous and multiparous cows. For cows with high peak production maximum yield was with 12 to 14 fewer days open than for cows with moderate peak. Conception prior to 2 mo postpartum had an adverse effect on cumulative yield. PMID- 3842863 TI - Genetic and phenotypic relationships between lactation cell counts and milk yield and composition of Holstein cows. AB - Monthly somatic cell count data were collected between February 1977 and February 1982 for Holstein cows in 928 herds enrolled on the Quebec Dairy Herd Analysis Service. The geometric mean of the log monthly cell counts was calculated for each lactation. Official lactation records for 305-day milk, fat, and protein yields, and fat and protein percents were obtained for same cows. There were 18,189 cows in first lactation representing 257 sires, 13,225 in second lactation representing 206 sires, and 8,683 in third lactation representing 151 sires. Heritabilities of yield traits and protein percent increased across three lactations. Heritability of fat percent was similar in first and third lactations but decreased slightly in second lactations. Heritability of lactation cell count was small, being least in second lactations. Genetic correlations between lactation cell count and yield traits were positive in first lactations, small and negative in second lactations, and small and positive in third lactations. Genetic correlations between lactation cell count and fat and protein contents were small in the three lactations. Phenotypic correlations between lactation cell count and production traits were small in each of the three lactations. Genetic correlations between yield traits in early lactation and lactation cell count in a subsequent lactation were positive. The genetic correlation between protein percent in an early lactation and cell count in a later lactation was large between first and second lactations, decreased between second and third lactation, and small between first and third lactations. Genetic correlations were small and negative for fat percent. PMID- 3842864 TI - Percentages of protein and nonprotein nitrogen with varying fat and somatic cells in bovine milk. AB - Over 15 mo, 28,390 individual milk samples from 3,600 cows in 62 Quebec Holstein herds were analyzed for crude protein, true protein, nonprotein nitrogen, fat, and somatic cell counts. Unadjusted means with standard errors were 3.51% +/- .002, 3.31% +/- .002, 31.70 mg/100 ml +/- .12, 3.67% +/- .004, and 297,230 cells/ml +/- 4002. Nonprotein nitrogen as a percentage of total nitrogen was 5.57% +/- .02. Least squares analyses showed significant effects of herd, age of cow, month of test, stage of lactation, somatic cell count, and fat percentage on contents of crude protein, true protein, and ratio of nonprotein nitrogen to total nitrogen. Highly variable nonprotein nitrogen fraction content during different months of the year and various stages of lactation is responsible for changes of crude protein content whereas changes of crude protein for different ages of cows, fat, and somatic cells in milk are due to changes of true protein content. Automatic infrared instrument calibrated against crude protein standards can be used satisfactorily to measure crude protein in milk if variations are due to age of cow, fat, and somatic cell counts. However, the instrument becomes inaccurate for measuring large variation of crude protein caused by variability of nonprotein nitrogen due to season and stage of lactation. PMID- 3842865 TI - Detection of bovine mastitis by bromothymol blue pH indicator test. AB - A simple bromothymol blue indicator test was evaluated for farm diagnosis of mastitis. The test required highly absorbent blotting paper impregnated with four spots of bromothymol blue. Indicator color scores (1 to 4) for quarter foremilks increased with somatic cell count and pH, although variability within each color score was large. Sensitivity of the bromothymol blue test ranged from 51 to 56% and specificity from 89 to 90% for most reference criteria used to classify normal and abnormal milk. Predictability of a positive test ranged from 49 to 52% (false positives 51 to 48%) and predictability of a negative test from 90 to 97% (false negatives 10 to 3%) for the same criteria. Overall the bromothymol blue test incorrectly diagnosed 11 to 20% of 3772 quarters. By classifying color score 2 as negative, predictability of a positive result was 70 to 75% and sensitivity was 26 to 30%. The test can be used by dairy producers to screen herds with a relatively high incidence of mastitis or used in combination with cow cell counts to locate abnormal quarters. The bromothymol blue test was less sensitive than the California Mastitis Test but offered several practical advantages for use on farm. PMID- 3842866 TI - Environmental and genetic sources of variation for seminal quality in mature Holstein bulls. AB - Various environmental and genetic factors that influence seminal quality were evaluated for 149 Holstein bulls used extensively in nine artificial insemination organizations (studs). These bulls were sons of 16 sires. Seminal quality was measured by percent progressive motility immediately postthaw and after incubation at 3 h, 37 degrees C, percent intact acrosomal membrane after incubation at 3 h 37 degrees C, and percent primary and secondary abnormalities. Semen was thawed at 37 and 24 degrees C. Spermatozoal concentration was counted with a hemocytometer. Bull age and season of collection were determined. Interaction of stud X thaw existed for both motility assessments and intact acrosomes, but 37 degrees C thaw resulted in higher motility and acrosomal integrity across all studs. Motility at zero hour was affected by season. Secondary abnormalities were influenced by season and stud X season. Interaction of thaw X season existed for incubated motility, which also was influenced by concentration and age. Age influenced secondary abnormalities. Heritabilities and repeatabilities (%) were .21, 44; .40, 34; .81, 74; and .31, 50 for 0-h motility, intact acrosomes, primary abnormalities, and secondary abnormalities. Genetic correlations were 0-h motility with acrosomal integrity and primary and secondary abnormalities, .88, -.70, -.93; acrosomal integrity with primary and secondary abnormalities, -.90, -.05; primary with secondary abnormalities, -.12. Selection for semen quality could improve fertility of bulls. PMID- 3842867 TI - Whole milk extender with antibiotics to eliminate Campylobacter fetus from frozen bovine semen. AB - Fresh bovine semen was contaminated with five strains of Campylobacter fetus at 10(5) to 10(6) organisms per ml of semen. The contaminated semen was processed to contain 500 units of polymyxin B, 500 units of penicillin G, and 1000 micrograms of streptomycin sulfate per ml, incubated at 35 degrees C for 10 min, and added then to whole milk extender with like units of antibiotics for further processing. Both a low and high initial sperm count requiring extension rates 1:7 and 1:39 were studied. Specimens for bacterial viability were processed for culture prior to adding bacteria, 100 min after initial antibiotic treatment, prior to freezing, and after thawed semen was centrifuged and washed to remove extender and antibiotic residue. All strains of Campylobacter fetus were not viable 6 h postantibiotic treatment prior to freezing. All nonantibiotic treated controls were viable after thawing and washing. Removal of antibiotics from thawed semen by centrifugation and washing indicated that antibiotics had bactericidal rather than only bacteriostatic activities against Campylobacter fetus. PMID- 3842868 TI - Effect of sire of fetus on subsequent 90-day production of the Holstein dam. AB - Data on calving ease and 90-day milk, fat, protein, fat percent, and protein percent were available on 8,817 Holstein cows enrolled in the Quebec Dairy Herd Analysis Service. These observations were distributed in 802 herds, and they represented 124 service sires. Estimates of the variance components associated with the service sire (sire of fetus) were obtained by Minimum Norm Quadratic Unbiased Estimation procedures. Two models were fitted; one model included herd, month of calving, age of cow, and sire of cow as fixed effects and service sire and residual as random effects, whereas a second model included calving ease as an additional fixed effect. Variance components and percentages of variance accounted for by service sire were similar under both models. Proportions of variance accounted for by service sire were 1.1, .3, .5, .2, and .3% for 90-day milk, fat, protein, fat percent, and protein percent. PMID- 3842869 TI - Mounting behavior as affected by stage of estrous cycle in Holstein heifers. AB - Nine Holstein heifers whose estrous cycles were synchronized were observed during three subsequent consecutive cycles. Observations of heifers during each periestrus period began when the first heifer reached day 15 of an estrous cycle and ended 36 h after onset of estrus for the ninth heifer. There were 118 1-h observations at 6-h intervals during the three periestrus periods. Estrous cycles were divided into postestrual, luteal, preestrual, and estrual stages by blood progesterone profiles and estrus. Heifers of these four stages accounted for 27.5, 48.3, 15.4, and 8.8% of heifers available to mount during the 118 observations, and heifers of each stage made 9.0, 5.2, 18.9, and 66.9% of attempted mounts. When number of heifers in estrus simultaneously increased from one to five, total attempted mounts and stands per hour increased from 10.1 to 63.5 and from 4.5 to 48.5. Stands per heifer per hour increased significantly as number of heifers in estrus increased from one to two and tended to increase as number in estrus increased further. Presence of one preestrual heifer in a group containing one estrual heifer increased total stands per hour from 2.3 to 5.0. Efficiency of detection of estrus may depend on proportion of animals within estrous cycle stages that have highest mounting activity. PMID- 3842870 TI - Utilization of chopped and long alfalfa by dairy heifers. AB - Two physical forms of alfalfa hay, chopped and long, were fed at maintenance and for ad libitum consumption to dairy heifers to determine effects upon digestibility and energy utilization. Ad libitum intake was associated with lower digestibility of dry matter (56 versus 58%), neutral detergent fiber (45 versus 58%), and acid detergent fiber (45 versus 52%). Energy balance was 1.77 Mcal/day at ad libitum versus .08 Mcal/day at maintenance. Dry matter intake was similar for chopped (5.4 kg/day) versus long alfalfa (5.5 kg/day). Digestibilities of dry matter, neutral detergent fiber, acid detergent fiber, and cellulose were 7 to 10 percentage units lower when heifers were fed the chopped alfalfa. Metabolizable energy intake generally reflected digestible energy intake, which was about 2 Mcal/day less for heifers consuming chopped alfalfa. Heat production was similar for the two physical forms. Consequently, heifers consuming chopped alfalfa had lower energy balance. Reducing particle size of the alfalfa resulted in lower dry matter and energy digestibility, presumably because of increased rate of passage. Increased intake to compensate for depressed energy utilization of the chopped alfalfa did not occur; effects upon animal gain could not be assessed. PMID- 3842871 TI - Selecting mating pairs with linear programming techniques. AB - Mate selection can increase progency merit if overall merit is nonlinear for one or more component traits. An index of expected progeny merit could be calculated for all possible mating pairs, and the set of pairs with the highest progeny mean could be selected. There are serious computational problems for more than a few males and females. To select and mate f, females, and m, males, from n of each, with k0 females per male, would require (nf)(nm)f!/(k0!)m evaluations. Linear programming algorithms can determine the optimal strategy efficiently by considering only a subset of these possibilities. Let pi ij be the index of progency merit of the ith sire mated to the jth dam and Xij be the decision variable for that mating (restricted to 0 or 1). Then the problem of selecting mating pairs can be stated as: maximize sigma i sigma j pi ij Xij, subject to sigma i Xij less than or equal to 1, sigma j Xij less than or equal to k0, sigma i sigma j Xij = f, and Xij = 0 or 1. By including an artificial sire and an artificial dam and choosing appropriate merit values for the artificial matings, this problem can be solved by efficient "transportation" algorithms. These algorithms could be used to develop rational mating packages for dairy artificial insemination studs provided that an objective evaluation of progeny merit could be formulated, provided that merit is not simply additively inherited. PMID- 3842872 TI - Prediction of transmitting ability of heifers from genetic evaluations of dams when dams and herdmates are required to have a first record. AB - Estimated transmitting ability for milk production calculated from only first lactation records was regressed on milk proofs of the sire and maternal grandsire and either estimated transmitting ability of the dam calculated from only first lactations or estimated transmitting ability of the dam calculated from all lactations of a data set in which all cows were required to have milk records of first lactation. Records of 222,576 Holstein heifers in the northeastern United States were analyzed. Partial regression coefficients were similar to those from reports in which all records in the data file were used to estimate transmitting abilities. The partial regression coefficient for estimated transmitting ability of the dam from all lactation records (.17) was smaller than the approximate theoretical regression coefficient (.70). The partial regression coefficient for estimated transmitting ability of the dam calculated from first records (.72) was similar to the approximate theoretical regression coefficient (.80). PMID- 3842873 TI - Sire and sire-feeding regimen interaction effects on lactation, growth, and carcass traits in dairy cattle. AB - Data from the University of Illinois dairy herd were used to estimate heritabilities of lactation yield, growth rate, and carcass traits and genetic correlations among them and to evaluate the importance of sire and of interaction of sire with feeding regimen for these traits. Heritabilities for lactation, growth, and carcass traits were small or moderate. Genetic correlations of lactation with carcass traits were moderate negative or large positive. Genetic correlations of estimated average daily gain with lactation and carcass traits could not be estimated. Variance for interaction of sire with feeding was large relative to sire variance for estimated average daily gain. Similarly, variance for interaction of sire with feeding regimen was large for back fat thickness, chilled carcass weight, dressing percentage, maturity score, and yield grade. Interaction of sire with feeding should be considered in genetic studies or in sire evaluation for some carcass traits and average daily gain. PMID- 3842874 TI - The effects of linguistic complexity on children's and adults' motor programming of speech. PMID- 3842875 TI - Perception of silent pauses in continuous speech. PMID- 3842876 TI - Effects of status and solidarity on familiarity in written communication. PMID- 3842877 TI - [Proceedings of the German Surgical Society. 102d session, 10-13 April 1985]. PMID- 3842878 TI - Evaluation of child life intervention in emergency department suturing. AB - The effects of stress-reducing intervention in emergency department suturing were evaluated by comparing children receiving intervention from child life staff, with two control groups who did not receive intervention, control A at a pediatric hospital and control B at a general hospital. The following measures were obtained: observable anxiety during the procedure; the child's self-report of anxiety, self-report of pain, postemergency visit behavior, and anxiety about a return visit; the parent's overall rating of satisfaction with care given and the parent's feelings of anxiety. Children and parents in the intervention group received emotional support and information concerning the medical procedure, and were taught appropriate coping strategies. Measures were obtained across three age groups (four to six years, seven to 10 years, 11 to 14 years) divided by sex; site of cut (face or body), and extent of injury (five or fewer sutures, six or more sutures). Intervention had its greatest influence on 11- to 14-year-olds with a facial injury requiring six or more sutures. Children in the intervention group expressed fewer fears than children in the general hospital control group. Parents of children who received intervention reported a significantly higher degree of satisfaction with the overall care given in the emergency department. PMID- 3842880 TI - Survey of childhood burns in Hawaii. AB - A review of 247 pediatric emergency charts and 80 pediatric impatient charts was performed over a three-year period at a tertiary care children's hospital in Honolulu. The purpose of this review was to examine the causes of childhood burns in Hawaii in order to develop guidelines for anticipatory guidance regarding burn prevention. Most burns occurred in the 0.8- to 3.0-year age group. Over one half of these burns were caused by tap water. Medicaid patients were more likely to be admitted to the hospital than nonMedicaid patients. Severe burns were mainly the result of scalds, fire, or contact with heating appliances. Burn severity and the causes of burns did not vary significantly with sex or ethnic or economic status. A burn prevention program which adequately addresses the unique cultural and climatic differences of this community, based on the data obtained, is described. PMID- 3842879 TI - Review of multiple traumatic injuries in an urban pediatric population. AB - In an urban children's hospital setting, 95 consecutive multiple trauma admissions over a five-year period were classified by the Modified Injury Severity Scale (MISS) system. As previously designed, the MISS represents a numerical consolidation of the Abbreviated Injury Scale and Glasgow Coma Scale. Our data support the accuracy of the MISS scoring in predicting the outcome of the injured child. Detailed examination of our experience with hepatic (n = 33), splenic (n = 13), and renal (n = 38) injuries, in light of recent developments, reaffirms the efficacy of selective, conservative (nonoperative) management in the majority of abdominal solid organ injuries in children. A brief epidemiologic review of urban pediatric trauma follows. PMID- 3842881 TI - Orthostatic heart rate and arterial blood pressure changes in normovolemic children. AB - Orthostatic heart rate and blood pressure changes were determined in 112 normovolemic children from two to 12 years of age. In normal children, two to eight years of age, and nine to 12 years of age, the heart rate may increase as much as 30 and 40 beats per minute, respectively, upon standing. The orthostatic systolic blood pressure change is independent of age and may, in normal children, fall as much as 27 mm Hg. The orthostatic diastolic blood pressure change, as determined by the fourth or fifth Korotkoff sounds, showed great variability, and probably will not be useful in the assessment of a child's intravascular volume status. Orthostatic changes in heart rate and blood pressure, within the above limits, cannot be used as evidence of hypovolemia, since these changes can occur in normovolemic children. PMID- 3842882 TI - Fever in infants less than two months of age: spectrum of disease and predictors of outcome. AB - Four hundred thirty-four febrile infants two months of age or younger were evaluated in the emergency departments of five major teaching hospitals over a one-year period. A culture-proven bacterial infection was present in 3.5% of the infants; bacteremia was detected in 3.3%. Bacterial meningitis was present in 2.4%, and aseptic meningitis was noted in 13.4%. Twenty-one percent had clinically apparent serious disease including pneumonia, otitis media, and gastroenteritis with dehydration. Six variables (age less than 1 month, lethargy, no contact with an ill individual, breast-feeding, total polymorphonuclear greater than or equal to 10,000/mm3 and band count greater than or equal to 500/mm3) were correlated with bacterial infection by step-wise discriminant analysis. However, these findings were neither sensitive nor specific enough to be clinically useful. Management varied, and 62% of the infants were hospitalized. Fifty-four percent, some of whom were managed as outpatients, received antibiotics. Febrile infants two months of age or younger require a comprehensive emergency department assessment, including appropriate laboratory studies (CBC, differential, urinalysis and culture, lumbar puncture, and blood culture), since 3.5% have bacterial infection that may be life-threatening. Hospitalization is warranted if the infant appears ill, laboratory studies indicate serious infection, or follow-up care is uncertain. PMID- 3842883 TI - Chewer's cheeks: a case of bilateral temporal muscle swelling. PMID- 3842884 TI - Massive fatal ventricular septal defect due to nonpenetrating chest trauma in a six-year-old boy: the role of early invasive monitoring in an evolving lesion. AB - Isolated ventricular septal defects due to nonpenetrating chest trauma are unusual lesions in adults and very rare in children. A review of the literature and of the natural course of traumatic ventricular septal defects is discussed, with emphasis on the evolving course and frequent late appearance of this lesion. Surgical closure is the treatment of choice, most often performed electively following medical treatment. Defects resulting in progressive severe congestive heart failure must be repaired emergently. The key to successful outcome is early suspicion of such a defect in the presence of heart failure following a period of relative cardiovascular stability. Anticipation of evolving myocardial dysfunction in the presence of seemingly minor chest wall injury and nonspecific electrocardiographic changes is emphasized. A case of a fatal traumatic ventricular septal defect is presented. The importance of early invasive monitoring with proper interpretation of hemodynamic data is discussed. PMID- 3842885 TI - Adverse effects of racemic epinephrine in epiglottitis. AB - Acute epiglottitis, a potentially fatal disease, may be difficult to diagnose if the presentation is atypical. We present three such patients who were initially diagnosed as acute laryngotracheitis. They deteriorated rapidly after administration of racemic epinephrine via nebulizer. We caution that: diagnosis of acute epiglottitis should be considered in similar patients; and appropriate precautions must be taken prior to visualization of the airway. PMID- 3842886 TI - Skin conditions simulating child abuse. AB - Knowledge of the cutaneous manifestations of child abuse is critical to the accurate identification and reporting of abusive injuries. Physicians must also be aware of cutaneous abnormalities which mimic abusive injuries in order to avoid unnecessary reporting of abuse. We report two children with cutaneous abnormalities which mimicked child abuse and review other skin conditions reported in the literature which have been mistaken for child abuse. PMID- 3842887 TI - Pediatric trauma: an approach to the injured child. AB - The approach to the injured child requires great care and clinical acumen to establish the diagnosis and institute appropriate treatment. Loss of life from occult internal hemorrhage or neurologic sequelae from a missed unstable cervical spine injury may be devastating. Yet, physicians in the ED must also know which children need only a careful physical examination, and when laboratory testing or admission is unnecessary. We have described a schema for providing appropriate care to children with trauma in such a way that specific issues about management can be reasonably approached by the emergency physician. PMID- 3842888 TI - The septic-appearing infant. PMID- 3842889 TI - Treating minors without their parents. AB - Minors frequently present to the ED for treatment without their legal guardians. In most such situations, it is best to contact the parents to obtain consent for treatment and to inform them about their child's problem. However, in some emergency situations or problems involving adolescent health, it may be impractical or damaging to contact the parents. In these situations, the law is sufficiently vague to protect the well-meaning physician who gives care to consenting minors for their own benefit. Of course, if problems result from the care which is rendered, the usual malpractice law will apply, and the physician will try to demonstrate that his treatment fit into one of the legal exceptions to the general rule. PMID- 3842890 TI - The telephone in pediatric emergency medicine. PMID- 3842891 TI - Anticholinesterase toxins. PMID- 3842892 TI - Development of a macromolecular vaccine against experimental chlamydiosis and berberine--a new anti-trachoma agent. PMID- 3842893 TI - [Tests of visual function in the Third World in a rural environment and an illiterate population]. PMID- 3842894 TI - [Glaucoma, a current major problem among the causes of blindness in Syria (retrospective survey)]. PMID- 3842895 TI - The significance of specific serum IgA antibodies in the diagnosis of primary, recurrent and persistent viral and chlamydial infections. PMID- 3842896 TI - [Knowledge and action in the global epidemiologic context of human chlamydioses. Thoughts and suggestions for surveillance in an endemic trachomatous environment]. PMID- 3842897 TI - [Effect of oral doxycycline and 1% tetracycline ointment in the treatment of severe trachoma]. PMID- 3842898 TI - [Trachoma in Mauritania (March 1984)]. PMID- 3842899 TI - [Incidence of Bitot's spot without protein-calorie malnutrition in the children of a Mauritanian village (Bareina-Trarza)]. PMID- 3842900 TI - [Aspects and practice of ophthalmology in the Department of Tahua, Nigeria]. PMID- 3842901 TI - [Survey of ocular onchocerciasis in 12 villages of North Cameroon (January 1983)]. PMID- 3842902 TI - [Data of an initial survey on ocular onchocerciasis in the Central African Republic (March 1984)]. PMID- 3842904 TI - [16th Yugoslavian Surgical Congress. Part II. Zagreb, 23-26 April 1984. Abstracts]. PMID- 3842903 TI - [16th Yugoslavian Surgical Congress. Part I. Zagreb, 23-26 April 1984. Abstracts]. PMID- 3842905 TI - [Use of the balloon catheter in "difficult" occlusion of the calcified sub-renal aorta]. PMID- 3842906 TI - [Myelolipoma of the adrenal gland: description of a clinical case]. PMID- 3842908 TI - [A case of bizarre leiomyoma of the duodenum]. PMID- 3842907 TI - [Cancer of the thyroid in the young. A contribution to the discussion on therapeutic choice]. PMID- 3842909 TI - [Cancer of the gastric stump: our experience]. PMID- 3842910 TI - [Organic stenosis of the esophagus in scleroderma: diagnostic and therapeutic aspects of a clinical case]. PMID- 3842911 TI - [Importance of the physico-chemical characteristics of suture threads in so called risk sutures. An experimental study]. PMID- 3842912 TI - The institute's researchers representation in the Sistema Nacional de Investigadores. PMID- 3842913 TI - Electrophysiological evidence of "relaxation behavior" during suckling in lactating female cats. PMID- 3842914 TI - Effects of diazepam and methocarbamol on EEG signs of "relaxation behavior" induced by milk slurping in cats. PMID- 3842915 TI - Modifications of serum lipoprotein cholesterol with Guatteria gaumeri. PMID- 3842916 TI - Congenital hemolytic anemia with Heinz bodies due to unstable hemoglobin. First report in Mexico. PMID- 3842917 TI - Hepatic glycogenolysis produced by intraperitoneal administration of total extract of Tecoma stans in rats. PMID- 3842918 TI - HLA and nephropathies in Mexican mestizo people. PMID- 3842919 TI - Presence of antiamebic antibodies in secretions from ileum, colon and feces in patients with amebic hepatic abscess. PMID- 3842920 TI - Effects of praziquantel on the motility of Cysticercus pisiformis. A comparative study with anthelmintic compounds. PMID- 3842921 TI - Hypoglycemic activity in male rats of bicyclo (3, 1, 0) hexane-6-carboxylic acid derivatives. PMID- 3842922 TI - [Preparation and nutritional characteristics of a hydrolysate from pepitona (Arca zebra)]. AB - Two soluble products resulting from the hydrolysis of pepitona (Arca zebra) were prepared as flour. Papain at its optimum hydrolysis conditions, previously established, was the enzyme used (40 degrees C for two hours at a pH of 7 in the proportion of 0.3% weight/enzyme/100 g meat). The hydrolysate obtained was then subjected to two different dehydration techniques: drum drying at 121 degrees C and 18 seconds retention, and spray drying at 101 degrees C and 40 psi pressure. The products were then stored for a five-month period at a temperature of 25 degrees C +/- 2 degrees C, time during which chemical determinations were performed in both hydrolysates. Findings showed that the time of storage does exert a significant effect of deterioration on the products. The greater and more significant quality losses occur during the first two months. The dehydration techniques used also affect significantly the soluble nitrogen content, and non protein nitrogen and soluble solids content, as well as color of pepitona hydrolysates. Spray-drying dehydration technique does not have a significant deteriorating effect. Biological studies undertaken demonstrated that the quality of both hydrolysates is satisfactory from the nutritional and amino acid composition points of view. A protein efficiency ratio (PER) of 2.27 and 2.29 was determined for the hydrolysate dehydrated by drum drier and for the dehydrated by spray drier, respectively. With regard to amino acid composition, both had satisfactory levels of essential amino acids, with a lysine content of 6.9 g/100 g protein for the hydrolysate dehydrated by drum drying, and 8.6 g/100 g protein for the other hydrolysate dehydrated by spray drying. PMID- 3842923 TI - [Typical dishes consumed in Sonora: regionalization and nutrient contribution]. AB - This study deals with the development of a method to identify typical food dishes, successfully applied in the State of Sonora, Mexico. The State was divided into six regions considering the size of the territory and existence of different physical, economic and sociocultural conditions, and how they influence the consumption patterns. A list of 66 regional food dishes was prepared by interviewing housewives from different parts of Sonora who now lived in the city of Hermosillo. From this list, 47 dishes were identified as regionally consumed, and a State-wide survey was performed to determine their frequency of consumption. Based on the categories of "very frequently", "frequently" and "less frequently", a group of 15 dishes (2 per region, plus 3 dishes throughout the State) was selected. A questionnaire was used to obtain the different ways they had of preparing them. The "typical recipe" for each dish was also determined, using the mode as statistical parameter. Samples of these food dishes were prepared at the laboratory following the selected home recipes for proximal analysis and determination of their vitamin A, thiamine, riboflavin, niacin, calcium, phosphorus and iron content. The results showed that a portion of "gallina pinta" contributed more than 25% of the daily recommended intake established by the National Institute of Nutrition "Salvador Zubiran" (INNSZ) for an adult man for energy, protein, iron, niacin and 24.3% thiamine and 21.0% calcium. The "chivichangas de queso", for example, contributed 45.2% of the calcium requirement, and the "tamales de carne", 36% iron.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3842925 TI - Milling procedures and air classification of amaranth flours. AB - The different milling characteristics of Amaranthus cruentus, a domestic variety prevailing in Mexico, selected as representative sample, are herein discussed. This was subjected to proximate analysis, which confirmed its good quality. Milling trials were carried out for the preparation of whole flour by means of conventional mills and by combining some of these with the Raymond and Alpine separators for air classification. Results were then compared to those obtained with a Strong-Scott pearler. Grits and bran contained the highest protein concentration. After comparing overall results, it may be concluded that the best operating conditions are the following: a) seed pearling using five passes, in a pearler, with variable yields of approximately 22% containing 36% protein, and b) combining the Miag mill and Raymond air separator, with variable yields of approximately 32% and a protein content of 30-36%. Proximate analysis of the fractions as well as farinographic and amylographic characteristics--different from those of whole wheat and amaranth flours--suggest their use in the preparation of nutritionally-enriched food products. PMID- 3842924 TI - Effect of heat treatment and milling on the seed, flour, rheology and baking quality of some amaranth ecotypes. AB - Forty-five harvests corresponding to the two predominating domestic species of amaranth in Mexico were studied. The proximate analysis revealed some statistically significant differences throughout three years of observation. The Ca, P and Fe content did not vary greatly in 15 samples. No chemical differences were either manifested in the Mercado and Aztec types of A. hypochondriacus, nor in the Mexican type of A. cruentus. The latter exhibits a higher grain yield and a shorter life cycle; however, its baking quality is apparently inferior to that of the Mercado type of A. hypochondriacus. The heat treatment of the seeds (toasting, popping and cooking) affected protein and lysine contents as does in cereals and leguminous seeds although toasting in particular improves its sensory characteristics without altering digestibility and PER. Popping only improves PER. Heating at 90 or 170 degrees C for three to five minutes, at the usual seed's moisture rate of 6 to 15%, does not affect protein content and does so only slightly in the case of the fatty acids content. Amylographic and farinographic values of the starchy fractions indicate similarities to C. quinoa and differences with respect to wheat. In the case of "amaranth milk", viscosity and gelatinization temperature produced satisfactory values. The extension of amaranth cultivation in the country is hereby suggested in view of the seed's nutritional quality, and considering the behavior of whole amaranth flour and its fractions. PMID- 3842926 TI - [Sensory evaluation of quality and quality differences in slaughtered chickens]. AB - A study was carried out with a trained panel for the purpose of determining if modifications produced in slaughtered chickens during the storage period, caused significant organoleptic differences, detectable by the consumer. The products examined corresponded to chickens slaughtered on three consecutive days, stored at 2 degrees C until their evaluation. Qualitative aspects in the raw product were investigated by a score test in which optimum quality is 13 points, as follows: for color (range 3), general appearance (range 5), and presence of defects (range 5). The values obtained were then analyzed through variance and Duncan multiple range test. Simultaneously, taste changes were estimated in fatty and meager meat by the triangular test. Homogeneity between judgements of panel members on both types of meat was statistically established (P = 0.05). The results obtained indicate that at the 0.1% level of significance, two products were identical; a third one proved to be different and of a significantly higher quality at the 5% level. The degree of difference, from slight to moderate, was due to flavor. PMID- 3842927 TI - [Evaluation of the starch fraction in corn products consumed regionally]. AB - The purpose of this study was to evaluate through conventional analytical procedures, the degree of modification of the starch fraction of regional products based on corn, such as grits, flours, precooked grits, flakes, precooked flour, "frangollo" and "locrillo." Based on the interpretation of changes in the starch fraction, the following conclusions are reached. Corn grits, flours, "frangollo" and "locrillo" are raw corn products subjected to physical processes such as shelling, degermination and size reduction. They do not show changes in their physicochemical characteristics. Precooked grits present certain structural modification (among others, changes in their rheologic behavior) and partial molecular change (among others, changes in the insoluble carbohydrate fraction), indicating that they have been subjected to processes wherein factors such as temperature, moisture and/or pressure intervene. Corn flakes and precooked flours show a high enzyme digestibility and a high degree of change in their functional properties (mainly, in regard to solubility, absorption and viscosity). These changes indicate modification at granular and molecular level. PMID- 3842928 TI - [Evaluation of a device to measure the hardness of the bean grain (Phaseolus vulgaris) and its use in the determination of cooking time]. AB - A simple equipment named DUR-INCAP was developed to study the factors responsible for the hard-to-cook beans and for other purposes related to this problem. The instrument measures objectively the hardness of individual beans, expressing the result as gram-force. The document describes the equipment. As a first step in establishing the usefulness of the equipment, a study using four white, four black and four red-colored beans, purchased in the market, was undertaken. Likewise, a black bean (Tamazulapa) harvested in January, 1983, and stored for one year at 5 degrees and 25 degrees C, and the same cultivar harvested in January, 1984, were also used. All beans were cooked in boiling water (95 degrees C) at atmospheric pressure for 30, 60, 100, 140 and 180 min. At each cooking time, a sample was withdrawn and its hardness measured individually on 25 kernels, with the DUR-INCAP. With the help of experienced persons in cooking, the hardness at each cooking time was classified into soft cooked beans (less than 100 g-force), medium (between 100-200 g-force) and hard (above 200 g-force). Results were as follows: white and black beans reached softness at 140 min of cooking, with the exception of one black sample which required 180 min. Two of the four red beans required 180 min, and the other two, needed 40 additional min. The effects of storage time and temperature on hardness became evident in the study with the black bean Tamazulapa. The sample stored for one year at 25 degrees C needed 140 min cooking time, while the sample stored at 5 degrees C and the one harvested in January, 1984, required 100 min. These initial results suggest that the DUR-INCAP instrument may be useful for the study of the hard-to cook bean problem; however, additional analyses are required. PMID- 3842929 TI - [Determination of processing conditions for obtaining a pepitona (Arca zebra) hydrolysate for human consumption]. AB - For the purpose of obtaining two protein hydrolysates from peptiona (Arca zebra), to be used as nutritional ingredients in accepted food items destined for human consumption, the enzymes bromelain and papain were studied. The effect of adding each of these proteases, on the rate of hydrolysis and conversion extent of insoluble pepitona protein to soluble nitrogen, were examined. Distilled water was added to the raw material to give a 2:1 ratio of solvent to pepitona, and mixed to produce a slurry at a pH of 6.4-6.5, with a total nitrogen value of 0.97% (w/v). Optimum conditions of hydrolysis were found to be two hours at 40 degrees C for both enzymes, at a pH of 7 and 0.3 g enzyme/100 g pepitona for papain, and a 0.2 g enzyme/100 g pepitona at pH 6.4 normally found in pepitona in the case of bromelain. PMID- 3842930 TI - [Functional properties and possible uses of a hydrolysate of pepitona (Arca zebra) in the preparation of foods]. AB - The present study revealed that the drum-drying and spray-drying procedures used on the pepitona (Arca zebra) hydrolysate, as well as the storage time, exert a deteriorative significant effect on the functional properties of both hydrolysates. The greatest and more significant losses of the majority of such properties occur during the first two months of storage period. Thus, in the case of foaming capacity, losses ranging from 17% to 34% were detected in the drum dried hydrolysate, and of 38% to 49% in the hydrolysate dehydrated using a spray drier, during the first two months of storage. The emulsifying capacity was also altered in 14% of the hydrolysate dehydrated in a drum drier, and in 25% of the hydrolysate dehydrated using a spray drier. Sensory evaluation tests demonstrated the potential of both hydrolysates for use as supplements of conventional foods such as cookies and extruded products. PMID- 3842931 TI - Development of an enzymatic fish hydrolysate and its use in instant soup bases. AB - The successful conservation of fish products, at low costs, is a subject of special interest in the developing countries. Conscious of this fact, our group has been studying several fish conservation methods, such as autolysis with high salt concentrations, and has obtained a sauce of high nutritive value and long shelf life. Nevertheless, the reaction process takes from four to six months. In the study herein reported, the hydrolysis was accelerated and controlled by using the following enzymes: papain, HT proteolytic, and Brew (N) zyme. The hydrolysate was then mixed with cereals to prepare instant soups. As results indicated, the best hydrolysate was obtained with Brew (N) zyme at 50 degrees C and 8.30 hours. This hydrolysate contains 93.0 g/100 g crude protein with a protein efficiency ratio (PER) and a net protein utilization (NPU) of 60% that of casein's NPU as well as a content of 0.8% ether extract. The lowest-cost mixtures with the highest nutritive value were: hydrolysate-wheat-soymeal, and hydrolysate-rice soymeal, with 38.3 and 29.7 protein per 100 g of mixture, respectively, and a NPU of 79.0 and 79.8% in relation to casein, respectively. The soups prepared had a satisfactory acceptance rating. There were no significant differences in flavor and aroma at a confidence level of 95%. The cost per gram of protein is about US$ 0.22 per kg. PMID- 3842932 TI - Studies on the development of infant foods from plant protein sources. Part III. Preparation, processing and properties of various products developed. AB - Studies have been carried out on the development of a low-cost, high-quality infant food of low paste viscosity from rice, chickpea (Cicer arietinum) and cow's milk. In order to improve the overall quality of the product, chickpea was processed by different methods prior to its incorporation. A number of formulations was prepared by mixing 52% rice, 30% each, the processed chickpea sample, and 18% whole milk powder. These mixtures were processed by extrusion cooking or drum drying. In the case of the extrusion cooking method, from the nutritional and technological points of view, it was found advantageous to incorporate milk powder after cooking a mixture of rice and chickpea. The values of net protein ratio (NPR) of the products developed, whether processed by extrusion cooking or drum-drying methods, were statistically equal, and not significantly different from those of casein. Supplementing the product with methionine and threonine showed no effect in improving the NPR value, suggesting that these amino acids were not limiting. There were slight differences in the digestibilities of proteins in the products developed and all were lower than that of casein. Depending on the processing method, differences were observed in paste viscosities of the products. After partial hydrolysis of the products with pounds amylase, both the cold and hot paste viscosities were greatly reduced and were comparable with those of whole milk powder. From the results herein reported, it can be concluded that the drum-dried product prepared using rice:chickpea (carbonate presoaked):milk (52:30:18) is the best of all the products developed. Its amino acid composition compares favorably with that of the milk proteins. PMID- 3842933 TI - Phenytoin teratogenicity and effects on embryonic and maternal folate metabolism [published errtum appears in Teratology 1986 Dec;34(3):487]. AB - It has been postulated that the mechanism of teratogenicity of the anticonvulsant drug phenytoin (PHT), is via a deficiency of folic acid. To test this hypothesis, Swiss Webster mice were administered PHT in the diet prior to and throughout gestation. Animals received a daily dose of approximately 75 mg/kg body weight. The maternal plasma PHT levels were within the therapeutic range for this drug. This dose increased the incidence of malformations, primarily cleft palate, in the absence of embryolethality. There was a decrease in maternal plasma folate levels on day 12 of gestation but no effect on days 10 and 18. Even in the presence of a maternal folate deficiency on day 12, PHT had no effect on total embryonic folate levels on days 10, 12, and 14. Previous experiments have demonstrated that PHT decreases activity of the enzyme 5,10 methylenetetrahydrofolate reductase in the liver of nonpregnant Swiss Webster mice. Data from the current study indicate that this enzyme activity is also decreased in hepatic tissue of pregnant mice, but it is not altered in embryos on the days examined. These data show that a teratogenic dose of PHT affects maternal folate metabolism. However embryonic folate metabolism, when measured in total embryos, was not affected. PMID- 3842934 TI - [Short-term outcome of infants hospitalized for an attack of acute bronchiolitis]. AB - The authors report the clinical, biological, radiological findings of 109 infants hospitalised for acute bronchiolitis. A prospective study was possible in 74 of them with an average of follow up of 18 months. After the admission, 31% were asymptomatic, 56% suffered at least one or several episode of wheezing, 13% have recurrent or chronic bronchopulmonary symptoms including cough and airway obstruction. Three points appeared determinant to predict recurrent wheezing: the rate of IgE, a familial history of atopy, and radiological pulmonary hyperexpansion. There was no statistic difference of evolution between the infants with wheezing at the admission and the others. The main prospective studies were analysed for discussion of the prognostic problems. PMID- 3842935 TI - [Clinical study on the measurement of squamous cell carcinoma (SCC)--related antigen in SCC]. AB - By using a RIA Kit for squamous cell carcinoma (SCC) antigen, extracted and purified this substance from liver metastasis of SCC of the uterine cervix, a fundamental and clinical study has been done. Based on the fundamental study, it was shown that this kit was useful clinically. High concentrations of serum SCC related antigen were observed in squamous cell carcinoma of the lung, head and neck, and uterus. It was recognized that the measurement of serum SCC related antigen was useful in not only diagnosis, but also in the evaluation of effectiveness of therapy or prediction of recurrence. In particular, as there is a lack of reliable tumor markers in head and neck tumors, good results can be anticipated from the measurement of SCC related antigen in such cases. PMID- 3842936 TI - Anterior chamber cleavage syndrome or mesodermal dysgenesis of the iris and the cornea. PMID- 3842937 TI - Some details regarding intercapsular implantations. PMID- 3842938 TI - Evaluation of liquid silicone oil in retinal detachments. PMID- 3842939 TI - The empty sella. PMID- 3842941 TI - Intraocular foreign bodies and vitrectomy. PMID- 3842940 TI - Non-penetrating traumatic retinopathy. PMID- 3842942 TI - [Age at diagnosis and laterality of retinoblastoma]. PMID- 3842943 TI - Occurrence of cystoid macular edema after Q switched Nd Y.A.G. laser capsulotomy. PMID- 3842944 TI - Fluorophotometry. Indications and technique. PMID- 3842945 TI - [Paravenous pigmented retinochoroidal atrophy. Apropos of 4 cases]. PMID- 3842946 TI - The use of bifocals as alternative in the management of low grade myopia. PMID- 3842947 TI - Classification of visual impairment and disability. PMID- 3842948 TI - Some postoperative complications after anterior chamber lens implantations (A.C.L.). PMID- 3842949 TI - Meningeal carcinomatosis. PMID- 3842950 TI - Idiopathic preretinal fibrosis in young patient. PMID- 3842951 TI - Oedipism or self-inflicted enucleation. PMID- 3842952 TI - CMSS-VEP: contrast modulated steady state visual evoked potentials. A functional examination technique of the visual system. PMID- 3842953 TI - Modification by fluoangiography of colour vision in diabetic patients. PMID- 3842954 TI - Unilateral nasal hemianopia presenting sign of posttraumatic conversion neurosis. PMID- 3842955 TI - Automatic perimetry. A critical survey. PMID- 3842956 TI - Immune deficiency and necrotising retinopathy. PMID- 3842957 TI - Fluorophotometry in retinitis pigmentosa. PMID- 3842959 TI - [46th national congress of the Italian Cardiology Society. Rome, 10-14 December 1985. Abstracts]. PMID- 3842960 TI - FAO/WHO food additives data system. Evaluations by the Joint FAO/WHO Expert Committee on Food Additives, 1985. PMID- 3842958 TI - An unusual association of subacute sclerosing glomerulonephritis, pemphigus foliaceus and infiltration of the deep corneal layers. PMID- 3842961 TI - Evaluation of bronchoalveolar lavage (BAL) in diffuse infiltrative lung diseases. PMID- 3842962 TI - Flexible fiberoptic bronchoscopy in endoscopically visible bronchogenic carcinoma. PMID- 3842963 TI - Respiratory allergies in a population of medical students in South India. PMID- 3842964 TI - An analysis of skin prick test reactions in asthmatic children in Bombay. PMID- 3842965 TI - Airway response to methacholine inhalation in asymptomatic male smokers. PMID- 3842966 TI - Functional and clinical significance of the bronchial collateral circulation. PMID- 3842968 TI - Developing pulmonary medicine (pulmonology) in India--a view point. PMID- 3842967 TI - Benign spontaneous pneumomediastinum. PMID- 3842969 TI - [Study on prevention of leprosy. 2. Chemo-prophylaxis trial for leprosy household contact children]. PMID- 3842970 TI - Treatment of paucibacillary leprosy patients with dapsone and rifampicin. PMID- 3842972 TI - Pathogenesis of lesions in leprosy. PMID- 3842971 TI - Interpretation of formation mechanism of erythema nodosum in leprosy patients. PMID- 3842973 TI - [Prognosis of primary bladder tumors]. PMID- 3842974 TI - [Association Francaise d'Urologie. 79th Session, Paris, 20-24 November 1985. Abstracts and reports]. PMID- 3842975 TI - [Conservative treatment of bladder tumors]. PMID- 3842976 TI - [Total cystectomy of infiltrating bladder tumors]. PMID- 3842977 TI - Theophylline pharmacokinetics in spinal cord injury: a preliminary report. PMID- 3842978 TI - Demographic study of the veteran spinal cord injury populations. PMID- 3842979 TI - Urodynamics and management of the neuropathic bladder in spinal cord injury patients. PMID- 3842981 TI - Atelectasis in spinal cord injured people after initial medical stabilization. AB - Two hundred and forty-three spinal cord injured people were evaluated during 271 consecutive admissions to a spinal cord injury service over four years. These patients all had received initial medical stabilization after spinal cord injury prior to admission. Atelectasis with or without apparent pulmonary infiltrate or pleural effusion was documented in six quadriplegics, all on the left side. Five out of the six had tracheostomies. Atelectasis occurred days to months after injury and initial medical stabilization. The patients often had symptoms and findings suggestive of other illnesses and may have had more invasive diagnostic and therapeutic procedures if the diagnosis of atelectasis was not provisionally made. Associated dyspnea delayed the rehabilitation of several patients. Response to vigorous pulmonary therapy and bronchoscopy, if necessary, was prompt, with complete resolution in less than 24 hours. The inability to clear secretions that caused this problem was responsible for recurrences in three patients. Preventive and therapeutic modalities such as assisted coughing, deep breathing, incentive spirometry, chest percussion, and suctioning, if necessary, should be practiced. Atelectasis may still occur after the original injury. PMID- 3842980 TI - Respirator-dependent quadriplegics: problems during the weaning period. AB - During a two-year period we admitted 13 respirator-dependent quadriplegic patients to the spinal cord injury service at Wood VAMC for weaning from a mechanical ventilator, and rehabilitation. The patients were sent to the Spinal Cord Injury Center because initial weaning attempts from the respirator at other medical centers were unsuccessful. We successfully weaned them from the respirator, and at the time of discharge, only two patients required an indwelling tracheostomy tube for suction. The time required for weaning off the respirator varied from two days to 14 months. Most of the patients were discharged and many of them could independently perform the activities of daily living. We conclude that are four main factors which influence the successful weaning of dependent quadriplegics from the mechanical ventilator: alleviation of patient's anxiety and depression; family support; close working relationship between staff; prevention of complications such as pneumonia and urinary tract infections. PMID- 3842983 TI - Annual report on findings of infectious agents in Japan 1984. PMID- 3842982 TI - Exploring user acceptance of a robotic arm: an aesthetic orientation. AB - An industrial robotic arm has been programmed for use by quadriplegics, as a personal assistant in a rehabilitative setting. This case study is an investigation of the acceptance of this device by disabled individuals who may be likely to use the robot in an actual home or work setting. The use and acceptance of assistive devices have been a significant problem in the utilization of these instruments. An assessment of attitudinal changes of selected quadriplegics in response to the presentation of two orientation programs on the use of a robotic arm was the focus of this project. One program included a discussion of aesthetic sequences of robotic movement, industrial design, and kinetic art. In contrast, the other program presented the "standard" introduction to the robotic arm which involves utilitarian sequences of robotic movement. A robotics questionnaire was administered to both groups before and after the treatment operations. A follow up study has been conducted. One of the subjects participating in the aesthetic treatment was part of this experiment which followed the posttest. The subject in the follow-up study was trained to use the Robotic Aid for utilitarian tasks. The questionnaire was readministered to this individual in a post-posttest. The whole study can be conceived of as series of investigations of the hypothesis that aesthetic movement of a robotic arm can affect an individual's attitude toward the acceptance and use of robots. As a piece of exploratory research, this case study does not reveal conclusive evidence to support the hypothesis. PMID- 3842984 TI - Processing biological data in real time. PMID- 3842985 TI - Computers and medical practice: old dreams and current realities. PMID- 3842986 TI - [Atypical form of malignant hyperthermia. Observation of a case caused by ketamine]. PMID- 3842987 TI - [Screening for beta-thalassemia in a section of western Liguria]. PMID- 3842988 TI - [Sedation with chloral hydrate in pediatric hospital practice]. PMID- 3842989 TI - [Newborn infants of drug-dependent mothers. Relationship between neonatal pathology and degree of drug behavior during pregnancy (heroin)]. PMID- 3842990 TI - [Camurati-Engelmann disease. Description of 2 related cases. Therapeutic approach with peridural anesthesia]. PMID- 3842991 TI - [Autosomal dominant chondrodysplasia punctata with laryngo-tracheal calcification. Presentation of 2 cases]. PMID- 3842992 TI - [The battered child syndrome]. PMID- 3842993 TI - [New genetic variants of glucose-6-phosphate dehydrogenase in Italy. Biochemical and metabolic characteristics]. PMID- 3842994 TI - [Hb D Punjan in Northern Italy]. PMID- 3842995 TI - [Fetal cytogenetic findings in the first trimester. Personal experience]. PMID- 3842996 TI - [Fetal phenotypic aspects of trisomy 18. 9 cases diagnosed prenatally]. PMID- 3842997 TI - [Prenatal cytogenetic diagnosis of a 69,XXX/46,XX fetus]. PMID- 3842998 TI - [Monosomy 22pter-22q11.2 with monosomy 10q26.2-10qter without Di George syndrome]. PMID- 3842999 TI - [Multiple myeloma in young adults]. AB - Two unusual cases of multiple myeloma are studied. The patients were young (27 and 36 year old respectively), and showed a slowly progressing disease and a poor response to therapy. This confirms the criterion that chemotherapy is only useful in symptomatic and progressive cases of multiple myeloma. PMID- 3843000 TI - [Present status of biological markers in oncology]. PMID- 3843001 TI - Lack of effect of indomethacin on the growth of N-nitrosomethylurea-induced rat mammary tumors. AB - Elevated prostaglandin levels have been previously reported in mammary tumors. This study was designed to determine if treatment with indomethacin, a prostaglandin synthesis inhibitor, influenced the growth of N-nitrosomethylurea induced mammary tumors in Wistar rats. Indomethacin was given in drinking water to tumor-bearing rats, and rats consumed between 2.5 and 3.0 mg/kg body weight/day. Continuous p.o. administration of indomethacin during 4 weeks did not affect the rate of tumor growth as compared to the control group of untreated rats. It can be concluded that indomethacin lack of effect on N-nitrosomethylurea induced mammary tumors, and this may be due to a specific prostaglandin profile as compared with previous results using other experimental models. PMID- 3843002 TI - [Cancer disease as a health care problem in internal medicine]. PMID- 3843003 TI - [Neuron-specific serum enolase in patients with non-tumor pathologies]. AB - In this brief communication, the authors indicate that amounts of neuron-specific enolase higher than 30 ng/ml are observed only in 1% of non-tumoral processes, and that when found in patients with respiratory symptoms a microcytic carcinoma of the lung can be suspected in 97% of the cases. PMID- 3843004 TI - [Epidemiology of colorectal carcinoma in Cantabria]. AB - Colorectal cancer is increasing due to both a real increase and a better diagnosis. More cases are seen in men than in women (ratio 1.45). The incidence increases with age, reaching the highest point at 75 years of age in men and at 84 years of age in women. Before 50 years of age, the risk of colorectal cancer is higher in women; the contrary happens after this age. Colorectal cancer is localized in the rectum (47.5%), sigmoid flexure (25.3%) and coecum (8.1%). Synchronous colorectal carcinomas are seen in 2.3% of the patients, frequently coexisting with multiple adenomas, and show a tendency to be localized out of the rectum. A higher proportion of carcinomas localized in the descending colon and a diminution of rectum carcinomas are observed in men with increasing age, while in women the number of carcinomas of the ascending colon increases and that of the descending colon decreases. For the considered period (1970-81), a diminution of the ascending colon carcinomas has been registered. PMID- 3843005 TI - [In vitro studies of the effect of a pulsed electromagnetic field on normal and cancer cells]. AB - The effect of an electromagnetic field of 100 Hz during 5 msec on HeLa, MMT and LMMB cell lines in vitro was investigated by means of videophotomicrography. An inhibition of cell growth of cancer cells was observed after the simultaneous action of light and electromagnetic field. The combined effect was also proved using plating efficiency tests. PMID- 3843006 TI - Immunological parameters in patients with gastric cancer at different clinical stages. AB - Lymphocyte subpopulations, cutaneous reactivity to tuberculin and distreptase, and immunoglobulin level were investigated in 32 untreated patients with gastric cancer at different stages of advancement and in healthy controls. Statistically significant decrease in the number of T-lymphocytes, accompanied by a deficient cutaneous reactivity, as well as a decrease in the number of B-lymphocytes and lowered A, G, and M immunoglobulin concentration were found in patients with grade III cancer. PMID- 3843007 TI - [The 1978 TNM system for cancer of the breast: proposal for a modification]. AB - The authors study the 5 and 10 years survival of 1.058 cases of breast carcinoma treated between 1963 and 1981, classified according to the pTNM system. They suggest the convenience of eliminating some of the combinations in order to obtain a good correlation with prognostic criteria. The authors propose a modification of the TNM system with closer clinical significance. PMID- 3843008 TI - [Traumatic diabetes insipidus]. PMID- 3843009 TI - [Thyrotoxic crisis is hypothyrotoxinemic shock]. PMID- 3843010 TI - [A critical review of the Marcy operation for inguinal hernia in children]. PMID- 3843011 TI - [Interrupted aortic arch--case report of a patient successfully operated on in adulthood]. PMID- 3843012 TI - [Relation of aerobic and anaerobic infections in patients treated surgically for acute gallbladder diseases]. PMID- 3843013 TI - [Esophageal leiomyosarcoma in a patient with synchronous renal carcinoma]. PMID- 3843014 TI - [Plastic and reconstructive operations in individuals with a single kidney]. PMID- 3843015 TI - Spontaneous rupture of the splenic artery as a presenting symptom of fibromuscular dysplasia of the artery. PMID- 3843016 TI - [Oncocytoma of the kidney]. PMID- 3843017 TI - [Acrylic cement-antibiotic mixtures in vivo: a scanning electron microscopic study with microanalysis]. PMID- 3843018 TI - [Experimental study of the stresses induced by loading in the human femur]. PMID- 3843019 TI - [Analysis of ground-foot interaction in the gait as an aid to the diagnosis and evaluation of therapeutic and rehabilitative procedures]. PMID- 3843020 TI - [Embryogenesis of the Achilles-calcaneus-sole system]. PMID- 3843021 TI - [Macroscopic anatomical study of the plantar calcaneonavicular ligament]. PMID- 3843022 TI - [Vibrating nails]. PMID- 3843023 TI - [Vibrating nails: instrumentation]. PMID- 3843024 TI - [Results of a 4-year follow-up on the use of multiply contoured intramedullary nails in the treatment of diaphyseal fractures and pseudarthroses of the humerus]. PMID- 3843025 TI - [Vibrating nails in fractures of the forearm]. PMID- 3843026 TI - [Scaglietti's vibrating nails in the treatment of diaphyseal fractures of the humerus and femur]. PMID- 3843027 TI - [Scaglietti's vibrating nails in metastatic humeral lesions]. PMID- 3843028 TI - [Kuntscher-nail osteosynthesis in the surgical treatment of unstable inferior fractures of the tibia]. PMID- 3843029 TI - [Use of the halo system in treating traumatic cervical lesions]. PMID- 3843030 TI - [Our experience in treating dorsal and lumbar vertebral fractures]. PMID- 3843031 TI - [Fractures of the proximal radial metaphysis in childhood]. PMID- 3843032 TI - [Combined fracture-dislocations of the upper end of the radius and ulna]. PMID- 3843033 TI - [Clinical picture and surgical treatment of pseudarthrosis of the carpal scaphoid]. PMID- 3843034 TI - [Microsurgical treatment of ring finger lesions]. PMID- 3843035 TI - [Isolated fracture of the 1st rib: etiopathogenesis and complications]. PMID- 3843037 TI - [Comparison of the surgical and conservative treatments of fractures of the humeral diaphysis]. PMID- 3843036 TI - [Osteoporosis and pelvic fractures]. PMID- 3843038 TI - [Malleolar fractures and ligamentous lesions of the ankle joint]. PMID- 3843039 TI - [Fracture-dislocations of the tarsometatarsal articulation]. PMID- 3843040 TI - [Clinico-statistical notes on cuboid fractures]. PMID- 3843041 TI - [Nursing of the patient in a coma caused by cranial injury]. PMID- 3843042 TI - The treatment of Ewing's sarcoma. PMID- 3843044 TI - [Primary bone tumors of the spine: nosographic picture, epidemiology and pathological aspects]. PMID- 3843043 TI - [Critical evaluation of the therapeutic results in Ewing's sarcoma]. PMID- 3843045 TI - [Surgical treatment of neoplasms of the vertebral column]. PMID- 3843046 TI - [Use of transpedicular biopsy in the diagnosis of vertebral tumors]. PMID- 3843047 TI - [Vertebral osteoma eburneum: a discussion of 2 cases]. PMID- 3843048 TI - [Surgical treatment of infected total hip prostheses. I. Removal of the implant]. PMID- 3843049 TI - [Evolutionary behavior of an osteochondroma: spontaneous regression]. PMID- 3843050 TI - [Diagnostic and therapeutic considerations in a case of chondroblastoma of the proximal femur]. PMID- 3843051 TI - [2 cases of osseous myeloma with a favorable long-term outcome]. PMID- 3843052 TI - [Dyschondrosteosis]. PMID- 3843053 TI - [Rare form of fibrodysplasia ossificans progressiva]. PMID- 3843054 TI - [A rare finding in Marfan's syndrome: contracture of a large joint]. PMID- 3843055 TI - [Magnetic resonance (MR): its impact in the imaging diagnosis of spinal cord pathology]. PMID- 3843056 TI - [Role of magnetic resonance (MR) in the initial evaluation and postoperative follow-up of stenosis of the cervical canal]. PMID- 3843057 TI - [Role of magnetic resonance in the neuroradiological approach in a case of cervical neurinoma]. PMID- 3843058 TI - [Surgical treatment of infected total hip prostheses. II. Prosthesis removal and reimplantation]. PMID- 3843059 TI - [The Ceraver Osteal cementless hip joint prosthesis]. PMID- 3843060 TI - [Kinematics of the knee]. PMID- 3843061 TI - [Arthroscopic synovectomy: potentials and limits of a new technic compared to the traditional surgical one]. PMID- 3843062 TI - [Arthroscopic meniscectomy with 2 access routes. A note on the surgical technic for bucket-handle lesions]. PMID- 3843063 TI - A rat model of bacterial keratitis. Effect of antibiotics and corticosteroid. AB - A model of bacterial keratitis in rats was developed to quantify the effect of antibiotics and corticosteroid on the infective process. Corneas were inoculated with Staphylococcus aureus, Pseudomonas aeruginosa, or Streptococcus pneumoniae. The natural history of infection with these organisms was determined. Groups of animals received topical antibiotics and prednisolone acetate. The effect of treatment on the number of leukocytes and viable bacteria in the corneas was determined. Prednisolone did not influence the effect of the antibiotics; however, steroid treatment alone increased the pseudomonad count as much as 20 fold above the count in untreated eyes. In general, both the antibiotic and steroid treatments were more successful when begun eight hours after infection than when begun at 24 hours. a 1% gentamicin sulfate preparation proved effective against each of the infections, including a pneumococcal strain considered resistant on the basis of in vitro tests. PMID- 3843064 TI - [The triangular ligament and the medial compartment of the wrist]. AB - Analytic, functional and traumatological study of the medial compartment of the wrist, showing the role of cohesion of the triangular ligament and its radialis and ulnaris fibrous expensions. PMID- 3843065 TI - [Descriptive anatomy and biodynamic study of the medial collateral ligament of the trapezio-metacarpal articulation of the thumb]. AB - The trapezoid articular surface is classically compared to a saddle. The movements of the thumb obey to two centers of rotation. The one is proximal and determined by the convexity of the saddle; the other is distal and determined by its convexity. The authors have realised 15 dissections and 20 cinematic studies; they bring precision to the collateral medial trapeziometacarpal ligament and show the fundamental role of its anchorage point on the medial metacarpal tubercle: the distal center of rotation and the anchorage point are practically superimposed. The movements from this center are realised in indifferent pronosupination. The proximal center of rotation and the anchorage point are distant. The movements from this center are necessarily accompanied by pronation or supination. Statement report of the mechanism of this double rotation. PMID- 3843066 TI - [The superficiaL branch of the radial nerve. Topographical location. Systematization]. AB - The authors have dissected the superficial ramus of the radial nerve and its branches on 50 cadaveric hands. They state precisely their systematisation, their variations and their topography in respect to the osseus and tendinous guiding marks. PMID- 3843067 TI - [The heart of the Papio Erxleben, 1777: biometry and macroscopic anatomy]. AB - One hundred hearts of baboons were studied (P. hamadryas and P. cynocepahlus). The weight and the volume of the hearts were measured by Scherle method (1970). The other measurements were: oblique diameter right "atrium" - apex cordis", right and left free ventricular thickness and the inner aorta diameter. The hearts were also studied by gross dissection and anatomical sections. The morphology of the heart of the baboon proved to be similar to the human heart morphology. Probably it is a good model to the cardiovascular research and may be surgical applications. PMID- 3843068 TI - Sonic motor pathways in teleost fishes: a comparative HRP study. AB - Among marine teleost fishes, one neuroeffector pathway for sonic communication consists of two components: a peripheral effector organ that consists of a swimbladder with associated 'drum' muscles, and a swimbladder or 'sonic' motor nucleus (SMN) located at the junction of the spinal cord and the medulla oblongata. Here, the organization of the SMN is compared in two unrelated groups of teleosts, the midshipmen, Porichthys notatus and P. myriaster, and the sea robin, Prionotus carolinus. Horseradish peroxidase (HRP), used as a retrograde tracer, revealed the position of the SMN in each species. While the SMN is a fused midline structure in midshipmen, it is bilateral in sea robins. The functional significance of these two contrasting patterns of organization remains to be explored. A third study group included mormyrid freshwater electric fish, which are also sonic. Mormyrids were included in part because an earlier study identified androgen-binding cells at a brain level comparable to that of the SMN of marine fishes. Using HRP methods, a swimbladder motor nucleus was identified at the caudal pole of the vagal motor column. However, the nucleus in mormyrids lies dorsal to the fourth ventricle and central canal, not ventral as it does in midshipmen and sea robins. Its position corresponds to the steroid-concentrating cells identified in a previous study. PMID- 3843069 TI - The West Indian manatee (Trichechus manatus) lacks a vomeronasal organ. AB - Completely aquatic marine mammals of the order Cetacea such as whales and dolphins have a reduced or absent olfactory system and neither a vomeronasal organ nor an accessory olfactory bulb. In comparison, seals, which are only partially aquatic, have olfactory and accessory olfactory systems including the vomeronasal organ. Thus, there seems to be a strong relation between the degree of adaptation to an aquatic environment and the degree of reduction in olfactory structures. Sirenians, such as manatees and dugongs, are another family of marine mammals which have secondarily adapted to a fully aquatic existence, yet there is dispute about the status of their olfactory structures. In the present study there was no evidence for a vomeronasal organ in the adult West Indian Manatee, Trichechus manatus. Additionally, the main olfactory system appeared quite rudimentary. These observations support the hypothesis that, in mammals, secondary adaptation to an aquatic environment leads to the reduction or loss of the olfactory senses. PMID- 3843070 TI - Tactile cutaneous representation in cerebellar granule cell layer of the opossum, Didelphis virginiana. AB - Recent studies of the albino rat revealed extensive cutaneous somatosensory projections to the granule cell (GC) layer of the cerebellar hemispheres and the caudal vermis. These projections are organized asomatotopically in patchy mosaics. To determine whether similar projections exist in a marsupial, we explored the GC layer of the cerebellar cortex of anesthetized Virginia opossums using in-depth microelectrode micromapping and juxtathreshold cutaneous natural stimulation techniques. We found: Somatosensory projections to the GC layer exist throughout the mediolateral extent of the folia of the posterior lobe. The anterior lobe was not explored. The submodality of most receptive fields was 'gentle-touch' cutaneous, but some were located in muscle, joint, or other deep lying structures. Peripheral projections to the GC layer are organized asomatotopically. Adjacent body parts project disjunctively to nonadjacent GC regions, and the overall pattern of peripheral projections forms a patchy columnar mosaic. Many body parts send projections to multiple loci. Ipsilateral projections predominate. Mechanoreceptors from face, snout, mouth and teeth activate the bulk of GC loci on crus I and crus II. The paramedian lobule receives projections from the entire ipsilateral body; the pyramis is activated from hindlimb and forelimb; the uvula from the upper arm and vibrissae. Different folia have different combinations and arrangements of disjunctive patchy peripheral projections. Individual differences in pattern of foliation and body representation occur. Except for differences in mosaic pattern and relative size of different projections, these findings are similar to those in rats and cats. These data suggest that somatosensory (especially cutaneous) inputs to the cerebellum are not only functionally significant, but that they exist widely among mammals. PMID- 3843072 TI - Proceedings of the 32nd annual meeting of the Society of Nuclear Medicine. June 2 5, 1985, Houston, Texas. Abstracts. PMID- 3843071 TI - Fundal variations in the eyes of the osteoglossomorph fishes. AB - The appearance of the fundus of the eye varies among the families of osteoglossomorph teleosts. In this study, four different fundal patterns were observed: (i) an anteroposterior (or horizontal) embryonic fissure with a septal falciform process (family Osteoglossidae); (ii) an embryonic fissure from the optic disc nasoventrally with a falciform process (family Arapaimidae); (iii) an embryonic fissure nasoventrally from the optic disc without a falciform process (family Hiodontidae); and (iv) neither an embryonic fissure nor a falciform process (families Notopteridae and Mormyridae). The distribution of these various forms among the osteoglossomorph fishes is consistent with the recent cladogram for the Osteoglossomorpha [Lauder and Liem, 1983] which was based on many characters. The embryonic fissure in adult Amia calva was also examined. Its existence in adult Amia, in most Osteoglossomorpha, and in many non-euteleostean bony fishes suggests that its persistence in the adult stage is a primitive trait of bony fishes, and its absence in the Notopteroidei (with the exception of Hiodon) is a derived condition. PMID- 3843073 TI - [Generation of pro-coagulation activity by leukocytes stimulated in vitro with lipoglycans from mycoplasmas]. AB - Lipoglycans represent a special type of lipopoly-saccharide that differs in structure from the well-known gram-negative bacteria lipopolysaccharide. After briefly describing their most important characteristics, the authors take into consideration the in vitro interaction between lipoglycans from Acholeplasma granularum, Acholeplasma oculi, and Acholeplasma axanthum and human leukocytes in terms of production of procoagulant activity. The results obtained show that the examined lipoglycans possess, similarly to lipopolysaccharides, the capacity to induce the production of procoagulant activity, thromboplastin-like, from human mononuclear cells. However, the pathophysiological significance of this endotoxin like activity remains to be established. PMID- 3843074 TI - [Antifungal prophylaxis: up-date and prospectives]. AB - Author reviews the now available strategies for the prophylaxis of primary and opportunistic mycoses. Chemoprophylaxis of opportunistic mycoses that are the most frequently observed fungal infections in Italy, gives satisfactory protection in endogenous fungal infections. On the contrary, fungal exogenous infections are not easily treated. In fact, systematically acting drugs which are also easy to use, are still lacking. Strict reverse isolation seems to achieve good results in these infections. PMID- 3843075 TI - [The IgA of the vascular compartment]. PMID- 3843076 TI - "In vitro" study on human mononuclear phagocytic cells behaviour versus DNA and RNA viruses. AB - It is generally accepted that mononuclear phagocytic cells are of crucial importance in defence against viral infections. Using a method of "in vitro" differentiation from human blood monocytes to macrophages, the interactions between human monocyte-macrophage with herpes simplex virus type 1 and 2, adenovirus type 17, coxsackie virus B type 4, poliovirus type 1 and ECHO virus type 2, are reported. In all viruses tested on monocytes, the infection of the cells was very poor according to the data of specific immunofluorescence and of the residual infectivity. In the macrophage stage all viruses tested were able to infect the cells. PMID- 3843077 TI - An intradepartmental teaching effort at a medical university. AB - Over a period of four years, 693 third-year medical students were offered the opportunity to receive half of their required internal medicine clerkship clinical experience by rotating on a well-established family medicine inpatient service in a university hospital. This learning experience was designed and evaluated by the physician and behavioral science faculty of the department of family medicine. The family medicine inpatient experience provided the student with a greater number of individual patient encounters and a greater variety of clinical problems than an internal medicine experience. Scores on an internal medicine national board test showed no statistical difference between those students who completed a traditional internal medicine clerkship and those receiving a portion of their internal medicine experience by rotating on a family medicine inpatient service. The success of this student experience was a significant factor in the eventual acquisition of curriculum time for a third year required family medicine clerkship. PMID- 3843078 TI - The accuracy of supervisors' perceptions of family practice residents' educational needs. AB - A study was made to determine the accuracy of supervisors' perceptions of residents' educational needs by comparing the perceptions of both clinical learners and their physician supervisors. Both groups responded to an assessment instrument during the actual teaching-learning activity at two model family practice centers. Although there was significant agreement on the types and rankings of educational needs, there was frequent disagreement between teachers and learners when their perceptions of needs for each teaching-learning activity were carefully compared. Psychomotor and affective needs received an unexpected low priority from both groups. Possible implications and future studies are discussed. PMID- 3843079 TI - Chart audit of ambulatory care in a residency program: a comprehensive system. PMID- 3843080 TI - Psychosocial problem assessment: to counsel or not to counsel. AB - A pragmatic method for assisting family practice residents in deciding whether or not to counsel patients with psychosocial problems is described. Called "the problem assessment framework," this seven-step method uses a process of sequential analysis to guide the resident through problem identification, goal setting, and determination of appropriate intervention. A checklist is employed to quickly evaluate the suitability of resident and patient for engaging in psychological counseling. PMID- 3843081 TI - Pharmacy teaching for family practice residents. AB - Because undergraduate training in pharmacology is insufficient preparation for prescribing drugs appropriately, comprehensive systematic education in clinical pharmacy is essential for family practice residents. A pharmacy curriculum could contribute to improved treatment of disease, decreased health care costs, decreased iatrogenicity and morbidity, lower risk of litigation, and better communication among physicians, pharmacists, and patients. The pharmacy curriculum which has been developed at the family practice residency program in Little Rock, Ark. focuses on problem-solving activities in the clinical setting, primarily utilizing problems from the residents' patient caseloads. A long-term plan of the department is to follow residents into practice in order to examine utilization of what they learned from the pharmacy curriculum. PMID- 3843082 TI - The pattern of publishing previously rejected articles in selected journals. AB - Although it is important to medical school faculty that they publish articles, little has been done to study the process of submitting manuscripts to journals. Specifically, the authors of this study surveyed authors in nine journals read by family medicine teachers to see if their published articles previously had been rejected by other journals. Based on 517 responses from 541 authors (96% response rate), the authors learned that the New England Journal of Medicine had the highest "not previously rejected" rate of 98% and the Journal of the American Medical Association had the lowest rate of 68%. Overall, 11% of the articles published in the eight other journals in the study previously had been rejected by NEJM. It might be interesting for an author whose manuscript is rejected to know the rates of rejection and publication of various journals. PMID- 3843083 TI - Research skills development in family medicine fellows. AB - This study was conducted to identify factors that contribute to the development of research skills among Robert Wood Johnson Foundation (RWJF) family medicine fellows, and to relate this process to their overall training. All 23 of the 1981 82 RWJF fellows were surveyed. Most fellows believe they are being well prepared to conduct research, and estimate they will spend approximately one-fourth of their future time in research activities. PMID- 3843084 TI - Peer review and the fate of manuscripts. PMID- 3843085 TI - The simulated family: an experiential model. AB - The use of simulated families, facilitated by a mental health professional, can promote experiential learning of theories related to many family-centered problems, such as child or spouse abuse, alcoholism, and acute or chronic illness of a family member. Responsibilities and costs of implementing such a program can be shared between two training programs. Participants in both programs benefit from the mutual experience. PMID- 3843086 TI - Whither graduate medical education? PMID- 3843087 TI - Measuring attitude toward family medicine. AB - This study attempts to develop a valid and reliable scale to measure student attitude toward family medicine. It describes a 35-item Likert scale that incorporates the nature of family medicine, the competency of family physicians, and the academic image of family medicine departments. The scale was administered to 116 first-year medical students. Concurrent validity and internal reliability for the scale are reported. Two forms of item analysis--item-to-total-score correlation and factor analysis--resulted in the selection of 23 items for the final scale. Seventy-three percent of the first-year students responding to the scale expressed a positive attitude toward family medicine. PMID- 3843088 TI - Personality types of family practice residents as measured by the Myers-Briggs type indicator. AB - This study was initiated to test the hypothesis that individuals currently choosing family practice as a career are likely to have different personality types than those who previously pursued general practice. Incoming residents to the University of Utah Family Practice Residency Program were compared to a group of private primary care physicians serving rural areas. Personality types were determined by administering the Myers-Briggs Type Indicator to both groups. Results showed that the current resident group differed significantly from the primary care physician group and that the residents' personality types were similar to personality types of faculty in other studies. This raises the concern that many family practice residents may not choose to practice in underserved areas. Further studies need to follow personality types through medical school and residency training and into practice to help determine which prospective physicians are likely to choose a primary care career and a rural practice. This information may be useful in health manpower planning and in examining admissions policies of medical schools and residencies. PMID- 3843089 TI - Smoking and cancer in Western India: an appraisal for cancer prevention. PMID- 3843090 TI - Morphologic marker for the diagnosis of lymphoblastic lymphoma. PMID- 3843091 TI - Teratoma of the thyroid--a rare case. PMID- 3843092 TI - Infarction of fibroadenoma with squamous metaplasia. PMID- 3843093 TI - Urothelial changes in renal calculus disease. PMID- 3843094 TI - N-methyl nitrosourea induced endocardial schwannomas in rats--light and electron microscopic study. PMID- 3843095 TI - Trace element profiles in skin-tumour and tissues of tumour-bearing mice. PMID- 3843096 TI - A Bekesy descending-only procedure: effects of attenuation rate and step size, and starting level. AB - Bekesy fixed-frequency thresholds for pulsed and continuous tones at 1 kc/s yielded by a descending-only technique were compared for suprathreshold starting levels of 38, 58, 78, and 98 db SPL, and attenuation rates of 1, 2, 4, and 8 db/sec with associated attenuation steps of 0.25, 0.5, 1, and 2 db, respectively, with 3 normal-hearing adults. For pulsed tones of 250 msec (duty cycle 50%), thresholds were not significantly affected by attenuation rate/step size or by starting level. However, for continuous tones, increasing attenuation rate/step size yielded better thresholds for a given starting level. Decreasing starting level yielded better thresholds for a given attenuation rate/step size. Thus, deteriorated thresholds were yielded by the slower attenuations/step sizes and by the higher starting levels. These data may be explained as a manifestation of normal adaptation. The similar relative effects found here of attenuation rate/step size and of starting level, as compared to the data of an earlier study (Harbert and Young, 1968) which used the traditional up-down Bekesy method of threshold tracing lend support to the possible future clinical use of a descending-only technique. PMID- 3843097 TI - Children's performance on multidimensionally scored time-compressed sentential stimuli. AB - Normative data were obtained for 96 children with normal auditory and language abilities in grades 2, 4, and 6 when presented monaurally with time-compressed (TC) sentences and 1st- and 2nd-order sentential approximations at 32 db re SRT. Oral responses were taped and multidimensionally scored in order to sensitize the test. Consistent with previous reports of normative data at other age levels, performance became poorer for 0 to either 40 or 60% TC (there was a negligible difference between the latter), was better for normal sentences than for sentential approximations, and improved slightly in the higher grades. PMID- 3843098 TI - The effects of vocational noise exposure on hearing aid battery subjective life. AB - This study examined the effects of vocational training noise on subjective battery life and on battery current drain, in 5 different class B hearing aids worn by students at a school for the deaf. Each S used a mercury battery in the morning in an average listening school environment with a 2-hr period of vocational noise exposure included, and another battery in an average school listening environment from after lunch to bed time. Voltage measurements and usage hrs were recorded until S reported the battery was not working. There were no mean differences in subjective battery life nor in recorded voltage drop between the two conditions. Battery life in 2 batteries exposed to vocational noise may have been extended due to a 10-day rest period during the spring break for these 2 students. PMID- 3843099 TI - Minimal time interval in auditory temporal resolution. AB - Human auditory temporal resolution was measured. Normal-hearing adults in 3 age groups (I: mn age: 24 yrs, N:55; II: mn age: 44.5 yrs, N: 25; III: mn age: 66.4 yrs, N:18) were required to indicate in which of 2 successive noise bursts of relatively low frequency (concentrated from .1-.5 kc/s) a brief temporal gap was inserted. The noise was created by passing a 100-c/s square wave through an electronic switch with virtually instantaneous rise-fall time and through a clinical audiometer to the associated earphone. The level was set at about the loudness of each S's HTL at .25 kc/s. The minimum detectable time interval (delta t) varied lawfully and significantly (p less than .001) with burst duration and with age. For all ages delta t was approximately equal to 3 msec when the burst duration was longest (85 msec), but at the shortest duration (10 msec) it rose to 17.6, 22.2, and 29.9 msec for Grps I-III, respectively. The interaction between age and duration was also significant (p less than .001). It was suggested that establishment of delta t by this or a similar procedure could offer an important parameter for evaluation of auditory function. PMID- 3843100 TI - Central auditory processing in urban black children, normal and learning disabled. AB - Normative data from Windham et al (1985) for urban Black children aged 7-10 yrs on the SSW test and the Willeford central auditory processing battery were used to compare those norms with scores of 40 children of similar age and from the same population who were referred from the Howard University Child Development Center as being at risk for learning disability (LD). The L-competing, L-non competing, and Total Error Score indexes from the SSW test, and the L-ear score from Willeford's Competing Sentences subtest, differentiated the LD Ss as a group from normals (p less than .05). Other tests were of questionable or no value in this regard for this population. It is suggested that it would be wise to view the results of these tests with caution and preferably in connection with other audiological testing when applied to LD Ss, especially if normative data for the particular subpopulation have not been collected. PMID- 3843101 TI - Scaling patient reports of hearing aid benefit. AB - Records of 743 adults seen for rehabilitation with amplification in 1978-82, were used to study the measurement properties of four widely used, single-item benefit scales. Patients in this sample displayed mild to severe adventitious losses and had been fitted with their first aid(s). Data relating to degree of hearing loss, age, and employment status were analyzed. Responses to Hutton's Hearing Problem Inventory (J. Acad. Rehab. Audiol., 1980, 13, 133-154), administered 6 weeks pre and post rehabilitation, were used to obtain estimates of benefit: hrs/day and portion of time aid(s) were worn, its benefit in various situations, and degree of satisfaction. From the HPI was abstracted a single index of perceived pre-post gain (PPPG). Matrix analyses separately for the employed and the unemployed pts isolating hearing loss and employment status revealed that when amount of hearing loss was the validity criterion, the employment groups differed only in hrs/day and portion of time worn, the employed group reporting a trend for more hrs/day of wear as hearing loss increased. When PPPG was the criterion, only one benefit index, dissatisfaction, did not increase with PPPG. Of 16 Spearman rank correlations between benefit indices and validity criteria, 6 were significant. The benefit scale of hrs/day of wear yielded 3, that for dissatisfaction, none. It was concluded that PPPG was the criterion best used to validate benefit scales as compared with the criteria of hearing loss or employment status. PMID- 3843102 TI - Stress, control beliefs, and psychological distress: the problem of response bias. AB - Research on the buffering effects of locus of control beliefs in the relationship between stressful life events and psychological distress has produced inconclusive findings. The purpose of this study is to examine whether social desirability response set bias may be at least partially responsible for these contradictory results. Analysis of data from a community survey of married women suggests that social desirability can attenuate the interaction effect between stress and control beliefs. It is recommended that researchers include controls for this form of nonrandom measurement error in future studies. PMID- 3843103 TI - Temporal relationship between life events and two illness measures: a cross lagged panel analysis. AB - Stressful life events were correlated with two separate illness measures among naval submarine school students. The two illness measures were self-reported health symptoms, and illnesses recorded in the subjects' medical files. Life events, self-reported symptoms, and medical record illnesses were separated into two time blocks and subjected to a cross-lagged panel analysis in order to assess the temporal relationships among them. A significant positive relationship was shown between negative life events experienced 7-12 months prior to testing and medical record illnesses experienced 0-6 months prior to testing. A comparable relationship was not found for negative events and self-reported symptoms. The results support the view that negative life events increase susceptibility to actual illness onset. They also question the accuracy of self-report measures of illness. PMID- 3843104 TI - Everyday problems and life change events: ongoing versus acute sources of stress. AB - Research on the relationship between life stress and illness has focused largely on stress caused by change. The present study examines a relatively neglected source of stress: everyday problems, defined as ongoing, often chronic situations, which are stressful for a substantial period of time. An inventory of everyday problems was developed, designed to minimize as much as possible potential confounds present in earlier work. It was administered to 281 undergraduate women along with a life events inventory, the Hopkins Symptom Checklist, and a social support scale, which measured family and nonfamily sources of support. Stepwise regression analyses indicated that everyday problems were more effective than life events in predicting psychological symptoms. Everyday problems were significant predictors of symptoms even after statistically controlling for life events, whereas life events had no predictive ability beyond that attributed to everyday problems. In addition, a significant interaction between everyday problems and life events was found. Multiple regression analyses also showed an interaction between everyday problems and nonfamily social support, as predicted by the buffering hypothesis. Within the methodological limitations of this study, these findings are interpreted as supporting the importance of everyday problems as a significant source of stress. PMID- 3843105 TI - Blood pressure variations during a working day at age 28: effects of different types of work and blood pressure level at age 18. AB - During an ordinary work day blood pressure was self-monitored once every hour in two samples of asymptomatic nonmedicating 28-year-old men. They were selected on the basis of previous compulsory blood pressure recordings made at the age of 18 when they had been drafted for military service. Subjects in the "original hypertensive sample" with "strain" occupations (hectic and uncontrollable, such as waiter, driver and cook) had more marked elevations of systolic blood pressure during work hours than other subjects. PMID- 3843106 TI - US Coast Guard collision at sea. AB - The collision between the USCGC Cuyahoga and the motor vessel Santa Cruz II resulted in psychological distress among the Coast Guard crewmen. The US Navy Special Psychiatric Rapid Intervention Team (SPRINT) was activated to provide mental health services to the Coast Guard survivors and others who had been affected by the disaster. The psychiatric records of the 18 survivors were examined and summarized, and combined with anecdotal comments made by SPRINT members. The most prominent psychological reactions among the survivors were shock, anger, sadness, and guilt. Spouses of the survivors dealt with bereavement and strove to understand their husbands' reactions. Variables identified by the SPRINT as being important to their success were communication with and support from the training center command, assurances of confidentiality to the survivors, and commencement of their work almost immediately following the collision. PMID- 3843107 TI - Dimensions of life stress in psychiatric patients. AB - A combined checklist and interview methodology was developed to assess the occurrence of life events among psychiatric patients. In addition to identifying events, patients were asked to rate them on 11 dimensions assumed to be important in mediating the impact of life stress. A factor analysis of ratings of 479 events from 64 patients, yielded three factors, reflecting the desirability of events, perceived control over their occurrence, and the readjustment required by events. However, ratings of social support available for help in coping with events and prior experience with similar events did not load on any of these factors. These dimensions should be treated as separate and potentially important influences. Three judges, blind to the patients' ratings, also made "normative" judgements of a subset of 154 events on the dimensions of desirability, control, and readjustment. Agreement among judges and between judges and patients was high with regard to desirability and control but low when rating readjustment. Judges tended to overestimate the amount of readjustment as described by patients. PMID- 3843108 TI - The effect of an academic examination on salivary norepinephrine and immunoglobulin levels. AB - Forty-six college students provided saliva samples just after taking an examination, one hour and 45 minutes later, and several days later, at a period of rest. As compared with baseline levels, the power stress of an examination was associated with an increase in salivary immunoglobulin A (S-IgA), a measure of B cell immune function, and with an increase in norepinephrine (NE) concentrations in the saliva. The increase in NE was greater for those for whom n power was greater than n affiliation rather than for those for whom the reverse was true. Greater increases in, and levels of, NE at the examination and after were associated with greater subsequent drops in S-IgA, which reached below baseline levels for those for whom n power was stronger. The examination stimulated adrenergic activity, which in the long run depressed immune function for those with a strong power motive who had been most aroused adrenergically by the examination. PMID- 3843109 TI - Type A behavior and job performance: some suggestive findings. AB - This study examined Type A and Type B differences in job performance, psychosomatic complaints, and career progression among white-collar employees (N = 218) in a field setting. Significant differences were found between Type A's and Type B's in quality of performance, effort exerted at the job, and psychosomatic complaints. Employees' cultural background and sex moderated some of the relationships observed in the study. Implications of the findings for future research on the topic are discussed. PMID- 3843110 TI - A multi-modal questionnaire for stress. AB - This paper presents data regarding the Strain Questionnaire (SQ), a 48-item scale designed to measure self-report levels of behavioral, cognitive, and physical stress complaints. A heterogeneous sample of 412 adults completed the SQ, and correlational, reliability, factor analytic and validity data are reported. Results suggest that the items reflect a wide range of content which show high internal consistency on each of the three subscales and the total SQ. Test-retest reliability demonstrated satisfactory temporal stability of the scales. Factor analysis of the SQ produced eleven orthogonal factors. The most salient factor was "cognitive/behavioral strain" which highlights the necessity for including these variables in self-report surveys of stress. Future research needs are also discussed. PMID- 3843111 TI - Correlates of psychosomatic stress symptoms among farm women: a research note on farm and family functioning. AB - The relationship between self-reported psychosomatic stress symptoms and dimensions of family and farm functioning were examined in a sample of New York State dairy farm wives (N = 126). The farm women completed a questionnaire assessing home and farm task loads, farm complexity, intrapersonal role conflict, interpersonal role conflict, husband support, and marital satisfaction. The psychosomatic stress symptoms included nervousness, restlessness, insomnia, shortness-of-breath, and fainting. In general, stress symptoms showed little relationship to task loads, farm complexity, and intrapersonal role conflict. Much stronger relationships were found for interpersonal role conflict, husband support, and marital satisfaction. Thus, these findings point to the greater importance of family relationships in preventing or buffering stress in comparison with simple role-related task expectations of farm systems. PMID- 3843112 TI - The inhibited power motive, type A behavior, and patterns of cardiovascular response during the structured interview and Thematic Apperception Test. AB - The Type A behavior pattern and the inhibited power motive have been implicated in the development of coronary heart disease (CHD). Since it is widely believed that enhanced cardiovascular responsivity may be one mechanism by which individuals develop CHD, the present study examined the relationship of Type A behavior and the inhibited power motive to different patterns of cardiovascular response during two behavioral tasks. Forty-one (24 Type A's, 17 Type B's) male undergraduates underwent the Type A structured interview (SI) and the Thematic Apperception Test (TAT) while a broad range of cardiovascular functions were simultaneously recorded. Different patterns of cardiovascular response were observed during the SI and TAT, and Type A's showed a greater tendency than Type B's to exhibit increased heart rate (HR), systolic blood pressure (SBP), and forearm blood flow (FBF) during the SI and the preparatory phase (but not the story-telling phase) of the TAT. The inhibited power motive was not related to enhanced cardiovascular responsivity during the SI or TAT. The implications of these findings for the development of CHD are discussed. PMID- 3843113 TI - The life events stress-performance linkage: an exploratory study. AB - For a long time, the relationship between life events, psychological adjustment, and illness has been a subject of much concern in the medical literature. Very recently, several management theorists have proposed a life events stress performance linkage. In the present study, such a linkage was tested in a classroom setting. One hundred fifty-nine university students were asked to estimate the degree of readjustment required for each of 43 life events and, subsequently, to identify events that they had experienced during the past year. Weighted and unweighted life event stress scores were later correlated with six indices of classroom performance. As hypothesized, measures of stress collected early in the semester were inversely related to future performance. The predictive ability of the stress scores was not enhanced by using readjustment values to weight life events experienced. PMID- 3843114 TI - Health status as a mediating factor in the life change-academic performance relationship. AB - This study was designed to determine whether illness during the academic year, when gender and academic readiness are controlled, is the variable accounting for the demonstrated relationship between life change index and subsequent academic performance. A weak though significant inverse association was found between life change and grades; this association persisted even after statistical adjustment for gender, academic readiness, and illness experience. There was no evidence that illness experience mediated the life change-performance relationship. The association was not subject to a threshold effect according to level of life change. PMID- 3843115 TI - Noise-induced stress in hospital patients: coping and nonauditory health outcomes. AB - This study found that, for 150 postoperative male patients, degree of objective noise, intrinsic sensitivity of the person to noise, and noise-induced stress were positively related to coping, in the form of exercised control over noise (correlations ranged from r = .207 to r = .468, P less than .01 for all cases). Hierarchical multiple regression confirmed these results. Furthermore, greater sensitivity of the person to noise was positively correlated with ability to cope, regardless of the objective level of noise. Patients who were randomly assigned to an experimental group, where they received instructions for control over noise, showed no difference in coping ability than a control group. There was a lack of support for several hypotheses concerned with the effects of noise induced stress and coping on health, where stress was measured by self-reports of recovery and average time-out-of-bed in minutes. The meaning of these results is discussed in terms of stress theory. PMID- 3843116 TI - Stress reactivity in alexithymia: decoupling of physiological and cognitive responses. AB - Alexithymia is described as the lack of awareness of the basis of emotion. Descriptions of alexithymia have primarily been based upon clinical observation with no laboratory validation of the construct. A proposed aspect of alexithymia is an inability to accurately identify emotional stimuli, with a hypothesized decoupling of peripheral physiological activity and accurate report of feeling state. The present study represents an initial attempt to determine whether such a decoupling of feeling state and physiology in response to stress exists in alexithymics. Males (18-25 years) screened for alexithymia using the Schalling Sifneos Personality Scale (SSPS) were used in subjects (n = 15) along with age matched nonalexithymic controls (n = 15). All subjects were asymptomatic. Each was individually exposed to a stress quiz while heart rate, frontal EMG, and blood pressure were monitored. The Profile of Mood States (POMS) was administered at four intervals (adaptation, prestress quiz, poststress quiz, and recovery). Results indicated that both the alexithymic and nonalexithymic groups displayed an increased heart rate and systolic and diastolic blood pressure response to the stressor. Alexithymics had higher resting heart rate levels throughout the experiment in contrast to controls. No differences in recovery from stress were observed between the two groups. EMG appeared stable across periods. Analyses of mood data revealed a significant increase in tension following the stress quiz in the nonalexithymic group, while the alexithymics demonstrated an increase in tension in anticipation of the stressor.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3843117 TI - A psychometric study of stress and coping during the International Biomedical Expedition to the Antarctic (IBEA). AB - A psychometric study was made of stress and coping during the course of the International Biomedical Expedition to Antarctica (IBEA). The stressors were specified by observation, as were the group's behavioral reactions to them, but they produced no significant differences on scales of symptomatology. The repressor/sensitization defensive style of coping was then examined, and although there were grounds for associating repressor tendencies with the low self reporting of stress, the group sizes were too small to confirm the suggestion statistically. But the question needs now to be taken further, as also does that of laboratory stressors. PMID- 3843118 TI - The stability of psychometric performance during the International Biomedical Expedition to the Antarctic (IBEA). AB - A selection of tests designed to measure certain cognitive and psychomotor functions was administered to 11 subjects on an Antarctic expedition, some of whom had been preacclimatized with cold baths. No evidence was found of deterioration due to the Antarctic climate, or to the lack of preacclimatization. It was concluded that the motivation of the subjects was the crucial factor in maintaining their performance. PMID- 3843119 TI - Human experimentation during the International Biomedical Expedition to the Antarctic (IBEA). AB - An extensive research project is described, during which resentment and hostility were aroused due to the data gathering methods. Those effects disturbed the smooth running of the project and led to subjects withdrawing from some experiments. Although the entire project had many positive features, those that are reported here detracted from its complete success. The negative features should be heeded by others who wish to improve the quality of their experimental work with human beings, otherwise the unintended stress of experimentation might restrict subject participation and disrupt data collection. PMID- 3843120 TI - Introspectiveness and adolescent symptom reporting. AB - A new measure of introspectiveness--the tendency to devote diffuse attention to thoughts and feelings about the self--was used to investigate adolescent symptom reporting. Introspectiveness was correlated with psychological distress (r = .40) and with physical symptoms (r = .27) in a random sample of college freshmen, and remained the strongest correlate of distress and symptoms when controlling for a variety of other measures. Women, Jews, and certain Hispanic groups were higher on introspectiveness than other students. An unanticipated, but possibly significant, result was that economic discontinuities and discontinuities involving significant others had markedly different relationships with health. Strong associations between perceptions of parental characteristics, adolescent introspectiveness, and health suggested the importance of socialization processes for understanding distress and symptoms. Finally, measures of emotional sensitivity and time spent alone were associated with introspectiveness and symptom reporting. Taken together, these findings suggest the importance of introspectiveness and its correlates for understanding the processes leading to adolescent symptom reporting. PMID- 3843121 TI - Measurement assessment of the type A coronary prone behavior pattern and hyperactivity/problem behaviors in children: are they related? The Bogalusa Heart Study. AB - The purpose of this study was to contribute to concept clarification regarding identification of the Type A behavior pattern in children. To accomplish this, two measurement techniques for assessing Type A behavior in children (MYTH and Hunter-Wolf) were compared to a third (a teacher-rated measure of hyperactivity: the Conners), since this latter measure, although often used to diagnose hyperactive children, seemed also to measure some Type A-like behaviors. The Hunter-Wolf also included a self-assessment of Type A behavior. The conceptual and measurement issue was: Are teachers rating Type A or hyperactive/problem behaviors in children? Fifty-five teachers participated. They rated 253 students, aged 8 to 17 years, in a biracial community. The clear overlap between teacher assessed Type A and the Conners hyperactivity measure was demonstrated when the best predictor of teacher-assessed Type A measure was the Conners. This was especially true for black males and white females. Little relationship existed between teacher-assessed Type A and self-assessment. The conclusions suggest that implications drawn from teacher-assessed Type A behavior in children may be inadequate because of potential ethnic and gender artifactual measurement error. PMID- 3843122 TI - Congruent stress-preventing factors and anxiety in a long-term stress situation. AB - The relationship of state anxiety to personal and social stress-preventing factors and to criterion measure was examined in 38 family men who were recent immigrants to Israel from Western countries. As predicted, state anxiety accounted for more variance in the criterion measure of stated intention of remaining in Israel than all the stress-preventing factors combined. Moreover, approximately half of the effect of the latter factors on the criterion was achieved through the anxiety variable. Given the modest sample size, the specific findings are regarded as tentative, but the general conclusion of the study appears to be amply supported. Namely, the level of state anxiety in the individual may be regarded as an index of the effectiveness of the various stress preventing factors operating in the situation and as a stress-preventing factor in its own right that directly affects problem-solving behavior and outcomes. PMID- 3843123 TI - Synchronization of bone marrow culture in chromosome study of leukemia. PMID- 3843124 TI - [Relation between the serological and electromicroscopic results of viral hepatitis]. PMID- 3843125 TI - Heterotopic allotransplantation of adrenal gland with vascular pedicle (report of 3 cases). PMID- 3843126 TI - HLA and hypertrophic cardiomyopathy. PMID- 3843127 TI - Diagnosis of peripheral lung cancer by selective bronchography. PMID- 3843128 TI - Subacute toxicity of rhomotoxin in rabbits. PMID- 3843129 TI - [Acute myocardial infarction in Beijing. A longitudinal clinical analysis of the cases between 1972 and 1983]. PMID- 3843130 TI - [Biology and behavior of Aedes aegypti]. PMID- 3843131 TI - [Present viability of the eradication of Aedes aegypti in the control of yellow fever in Brazil]. PMID- 3843132 TI - [Visceral leishmaniasis in Santarem/PA: general aspects of the control, serological survey in dogs and treatment of the human cases]. PMID- 3843133 TI - [Integrated health actions]. PMID- 3843134 TI - [A proposal for health education within the integrated health actions]. PMID- 3843135 TI - Sarcoid heart disease. AB - Sarcoid heart disease has had slow recognition but it is now being increasingly diagnosed in life and at necropsy. Recognition is important as energetic treatment may greatly improve the prognosis. Although patients with 'classical' sarcoidosis may be found to have cardiac involvement, most of the clinically important cases present with cardiac problems--sudden death, heart block, tachyarrhythmias and 'cardiomyopathy'--are the most frequent presentations. Sarcoidosis should be thought of in any case of difficult heart disease for which there is no obvious aetiology. Histological confirmation of sarcoidosis in some organ should be sought. Energetic treatment and follow up show that the prognosis is not necessarily bad. PMID- 3843136 TI - Sarcoidosis in Eastern Europe. AB - When analysing the data on sarcoidosis in Eastern Europe, it is seen that the incidence of sarcoidosis considerably varies in respect to individual countries, as is also the case in West Europe. The highest incidence was observed in GDR (12.0) and the lowest one in Poland (1.26). Data on the incidence could be obtained for Hungary (4.3), Czechoslovakia (3.5) and Yugoslavia (2.5), while for the Soviet Union, Romania, Turkey (Istanbul), Bulgaria and Greece there are only data for certain districts, with the exception of Albania where these data are thoroughly unknown. In all countries of Eastern Europe, sarcoidosis generally appears in persons aged 29-50, predominantly in the group of those aged 29-40. In respect to sex, the disease is more frequently diagnosed in women, the incidence of which ranges from 53% in Lithuanian SSR to 69.5% in Hungary. Acute forms (Lofgren's syndrome) account for 9% in Poland and 24% in Yugoslavia. PMID- 3843137 TI - Kveim test and mitochondrial antibodies in the differential diagnosis between primary biliary cirrhosis and sarcoidosis. AB - Intracutaneous Kveim test and measurement of serum mitochondrial antibodies were performed in a group of patients with primary biliary cirrhosis (PBC) and in a group of patients with sarcoidosis. There were 14 patients, 1 man and 13 women, age range 39-64 years, with clinical picture, laboratory tests and liver biopsy consistent with PBC. In the sarcoidosis group there were 38 patients, 18 men and 20 women, age range 22-76 years, with clinical, radiological and histopathological findings typical for sarcoidosis. In this group chest x-ray showed stage 0 in 3 patients, stage I in 7, stage II in 18 and 10 patients were in stage III. Kveim test was positive in 24 (63.2%) of the sarcoid patients and negative in all 14 patients with PBC. Mitochondrial antibodies were present in 13 of the PBC-patients but in none of the 38 examined sarcoid patients. Kveim test and analysis of mitochondrial antibodies seems to be of great value in the differential diagnosis between primary biliary cirrhosis and sarcoidosis. PMID- 3843138 TI - A case of gastric sarcoidosis. AB - A case of gastric involvement in a long standing patient with fibrotic sarcoidosis is reported. The diagnosis was made by the finding of Schaumann bodies in the gastric mucosa. At autopsy, the lungs were honeycombed with numerous Schaumann bodies, one of which shows ossification. PMID- 3843139 TI - Immunology of pulmonary disease--profile of the granuloma. AB - Granuloma formation in the lung is initiated by a diversity of antigens and other agents including infection, chemicals, organic dusts and metabolic disturbances, all of which lead to chronic parenchymal inflammation and a varying expression of cellular infiltration, necrosis, vasculitis and fibrosis. PMID- 3843140 TI - Overlap syndromes with sarcoidosis. AB - It is hoped that readers of this article will make a note of any other disorders which occur in their patients with sarcoidosis. We shall welcome this list and the frequency with which other disorders coincide with sarcoidosis. PMID- 3843141 TI - A tale of two cities. AB - This is a comparison of two large series of histologically-confirmed sarcoidosis 797 patients kept under supervision in Hamburg and 818 patients in London. There are a few differences but many striking similarities. The factual data in these two series should provide guidelines for present and future investigators recognising sarcoidosis as it emerges from obscurity in Africa, India and Asia. PMID- 3843142 TI - Asymptomatic ocular sarcoidosis. AB - Sarcoidosis, as multisystem disease, may affect the entire visual apparatus and its adnexa: the eye hence is an optimal observation point to confirm diagnosis and assess disease activity. However, the eyes are affected only in one-fourth of cases, and the majority of the lesions are asymptomatic, requiring appropriate examination techniques to be detected. In this paper we reviewed the ophthalmic changes found in a group of 163 Italian patients affected with sarcoidosis, comparing the data collected with those published in the literature. Conjunctival granulomata, chorio-retinal lesions and lacrimal gland involvement were the more common ocular manifestations of the sarcoidosis detected; these were asymptomatic in two patients out of three. Ocular changes in sarcoidosis are more common than generally appreciated even in white patients, but their detection requires meticulous eye examination, the use of 67 Gallium scans of the head, fluorangiography, and the yield of biopsies from available eye tissues. PMID- 3843143 TI - Sarcoidosis associated with complete heart block. AB - The association between sarcoidosis and complete heart block was explored by a register study, a description of 9 own cases and a survey of 48 cases collected from the literature. Incidences were calculated from statistics of hospital in patient diagnoses in a Swedish county over a 13-year period. Strong association was found between the two conditions, with significantly higher risk (RR = 16.7, P less than 0.001) of heart block in sarcoidosis patients than in the general population. Pacemaker management is often complicated in patients with sarcoidosis. The association should be kept in mind when dealing with patients presenting with sarcoidosis or complete heart block. PMID- 3843144 TI - The chest radiograph and sarcoidosis. Reevaluation of the chest radiograph in assessing activity of sarcoidosis: a preliminary communication. AB - Classic radiographic staging of sarcoidosis, utilizing stages 0 through III, is a purely descriptive classification and bears no relation to the clinical activity of the disease. We propose a new method of determining sarcoidosis activity based solely on the chest radiograph. This "staging" is based on the presence or absence of air bronchograms, peribronchial cuffing, and subpleural thickening. Adenopathy, reticular, reticulonodular, and nodular opacities are not included in our methodology. Other diagnostic methods currently utilized for staging activity include Gallium scanning, bronchoalveolar lavage, and physiologic studies. In 85 studies performed in 51 patients with biopsy-proven sarcoidosis, this staging method agreed with Gallium scintigraphy results in 68.2%. The system failed in specific and identifiable subgroups of patients. We feel that the chest radiograph compares favorably with other staging methods in detecting the alveolitis phase of sarcoidosis, and is reproducible, noninvasive, and cost efficient. PMID- 3843145 TI - [The role of serotonin in viral hepatitis A in children]. PMID- 3843146 TI - [Clinical characteristics of salmonelloses in children]. PMID- 3843147 TI - [Clinico-laboratory characteristics of salmonella carrier state]. PMID- 3843148 TI - [Status of the microflora of the intestine in combined bacterio-viral infections]. PMID- 3843149 TI - [Diagnosis of typhoid fever at the present time]. PMID- 3843150 TI - [The role of conditionally-pathogenic enterobacteria in the development of acute intestinal diseases]. PMID- 3843152 TI - [Changes in several hemodynamic indices in intestinal toxicosis with exsiccation]. PMID- 3843151 TI - [Indices of humoral immunity in hospital salmonella infections in children less than 1-year-old]. PMID- 3843153 TI - [Experience with the treatment of severe forms of intestinal toxicosis in young children]. PMID- 3843154 TI - [Various questions concerning the etiopathogenesis and clinical picture of acute stenosing laryngotracheobronchitis of viral etiology in children]. PMID- 3843155 TI - [Character of the therapeutic action of different schedules of administration of donor anti-influenza gamma-globulin to influenza patients]. PMID- 3843156 TI - [Experience with the clinical use of donor anti-influenza gamma-globulin]. PMID- 3843157 TI - [Treatment of acute respiratory viral infections with an obstructive syndrome in children]. PMID- 3843158 TI - [Changes in the spectrum of serum free amino acids in influenza patients]. PMID- 3843159 TI - [Concentration of antibodies to respiratory viruses in commercial preparations of gamma- and polyglobulin]. PMID- 3843160 TI - [Clinico-immunologic study of the use of 2 doses of inactivated influenza centrifuge vaccine]. PMID- 3843161 TI - [Discovery of a possible connection between vaccination with inactivated chromatographic influenza vaccine and the development of the Guillain-Barre syndrome]. PMID- 3843162 TI - [Initial results of using the new detoxifying preparation neohemodes in the treatment of viral hepatitis patients]. PMID- 3843163 TI - Program and abstracts: the American Society of Human Genetics, 36th annual meeting. Salt Lake City, Utah, October 9-12, 1985. PMID- 3843164 TI - [Morphologic characteristics of leukoplakias of the oral cavity and review of case material]. AB - Cases of oral mucosa leukoplakias are presented. The authors discuss histologic features, clinical and prognostic findings. PMID- 3843165 TI - [Practical indications for pre-prosthetic adjustment of the alveolar processes]. PMID- 3843166 TI - [Spigelian hernia: presentation and discussion of 3 clinical cases]. AB - The authors describe three cases of ventral-lateral hernia (Spigelian hernia), with their clinic and diagnostic features. They also make a revision of the literature about this disease and some considerations about the relatively high incidence and the frequent diagnostic difficulties. PMID- 3843167 TI - [Consequences of fractures of the mandible on the temporomandibular joint]. AB - Temporo-mandibular joint carry out an important and complex function during masticatory dynamics. For this reason it is very important to consider the possible consequences of the mandibular fractures on the T.M.J. It is possible to have meniscitis or arthritis, arthrosis or even ankylosis. PMID- 3843168 TI - [3 new cases of infantile transient hyperphosphatemia. Description and etiopathogenetic discussion]. AB - Three patients with transient hyperphosphatasemia of infancy are described and compared to other 79 cases reported in literature. Etiopathogenesis is discussed and the good prognosis of this condition is emphasized. PMID- 3843169 TI - [Immunological aspects of primary cancer of the lung]. PMID- 3843170 TI - Melioidosis. PMID- 3843171 TI - [Effect of lysine stepronin salts on mucociliary clearance]. PMID- 3843173 TI - [Pleural effusions]. PMID- 3843172 TI - [Changes in the blood coagulation system in patients with primary carcinoma of the lung]. PMID- 3843174 TI - [Role of computerized tomography in thoraco-pulmonary needle aspiration]. PMID- 3843175 TI - [Reflections on secondary implants]. PMID- 3843176 TI - [Involvement of the optic nerve in Besnier-Boeck-Schaumann disease]. PMID- 3843177 TI - [Surgical treatment of ptosis by the disinsertion of the aponeurosis of the elevator muscle of the upper lid]. PMID- 3843178 TI - [Bilateral exudative retinal detachment in a 10-week pregnant woman: diagnosis and management]. PMID- 3843179 TI - [Acute bilateral retinal necrosis in 2 stages. The role of herpes infection?]. PMID- 3843180 TI - [Computerized evaluation of x-ray computed tomography as a diagnostic aid in ophthalmology]. PMID- 3843181 TI - [Unrecognized choroidal melanoma: surgical treatment of secondary detachment]. PMID- 3843182 TI - [Pseudo-exfoliative syndrome. 1: Semiology and clinical variations of pseudo exfoliation]. PMID- 3843183 TI - [Pseudo-exfoliative syndrome. 2: Semiology and physiological variations of pigment dispersion]. PMID- 3843184 TI - [Role of the capsular exfoliation syndrome in the pathology of the anterior eye segment]. PMID- 3843185 TI - [School-learning difficulties in children with bilateral congenital cataracts]. PMID- 3843186 TI - [Electro-oculography, alcohol and noise]. PMID- 3843187 TI - [Microspherophakia--therapeutic aspects apropos of a familial case]. PMID- 3843188 TI - [Metallic intra-ocular foreign bodies of the posterior segment. Long-term results and prognosis]. PMID- 3843189 TI - [Para-clinical evaluation methods of Means syndrome]. PMID- 3843190 TI - [2 cases of birdshot-type chorioretinopathy]. PMID- 3843192 TI - [Treatment of distichiasis by palpebral marginoplasty (graft of oral mucosa)]. PMID- 3843191 TI - [Epidermoid carcinoma of the conjunctiva in a 29-year-old subject of African origin]. PMID- 3843193 TI - [Use of computers in research on heredo-familial diseases]. PMID- 3843194 TI - [Computerized coding of ophthalmologic diseases and their therapy]. PMID- 3843195 TI - [Analysis on an Apple II+ of 245 implants into the posterior chamber]. PMID- 3843196 TI - [Quantification and automation of Panel D-15]. PMID- 3843197 TI - [Panophthalmia, followed by evisceration, secondary to the removal of monofilaments 16 months after intervention for cataract]. PMID- 3843198 TI - [Insufficiency of the lower rectus muscle after fracture of the operated on orbital floor]. PMID- 3843199 TI - [Tapeto-retinal dystrophy in relation to a blood circulation abnormality of the vortex network]. PMID- 3843200 TI - [Choice of surgical treatment in the sequelae of Basedow ophthalmopathy]. PMID- 3843201 TI - [Ephemeris 1984]. PMID- 3843203 TI - [Gonio-cyclodiastasis using tongue-like incisions]. PMID- 3843202 TI - [Macular epi-retinal membranes. Apropos of 14 surgically treated cases]. PMID- 3843204 TI - [Birdshot chorio-retinopathy--apropos of 7 cases]. PMID- 3843205 TI - [Osseous choristoma of the choroid: apropos of a new case followed for 4 years]. PMID- 3843206 TI - [Treatment of melanomas of the choroid with 106 Ru/106 Rh applicators. Preliminary results]. PMID- 3843207 TI - [Value of the investigation of retinal lesions in total congenital deafness]. PMID- 3843208 TI - [Rothmund syndrome and syndermatotic cataracts]. PMID- 3843209 TI - [Herpes--the "rabbit-shot"]. PMID- 3843210 TI - The Graeme Robertson Memorial Lecture, 1984. Some disorders of the central grey matter in children: clinical and radiological diagnosis. PMID- 3843211 TI - Adult Lennox Gastaut syndrome: patients with large focal structural lesions. AB - Ten patients, referred to the Austin Hospital for possible surgery to alleviate intractable epilepsy, were found to have large local atrophic lesions on CT head scans. Detailed analysis of seizure patterns showed that tonic seizures constituted the main seizure type. In addition the histories of all 10 patients showed absences, atonic seizures and mental deterioration. In half the subjects there were psychomotor elements in some seizures. The clinical diagnosis of Lennox Gastaut syndrome was made. EEG findings were notable for the appearance of bilateral slow spike-wave activity and also tonic seizure fast activity in all patients. Seemingly focal emphasis of abnormal EEG activity, especially spike and spike-wave elements, prompted the use of long-term videomonitoring with intracerebral electrodes in eight patients. In four of these, marked focal emphasis of tonic fast activity in actual seizure recordings provided the basis for local ablative surgery in the expectation of removal of the epileptic focus. In all four cases this surgery was unsuccessful. It would seem, therefore, that though the focal structural lesion and the seizures probably stemmed from the same source, surgery to the lesion did not effect the removal of an 'epileptic focus'. Tonic seizures would seem to be a generalized form of epilepsy and in these patients their presence and the significance thereof were vital to appropriate management. PMID- 3843212 TI - Ocular and ocular motor aspects of primary thalamic haemorrhage. AB - As part of a correlative study of the neuro-ophthalmological abnormalities in thalamic haemorrhage, we report preliminary findings in six patients with this condition diagnosed by clinical and CT brain examinations. Five patients were middle-aged and hypertensive. Two had Horner's syndrome, and three anisocoria. Three patients had prominent mesencephalic dysfunction. There was pathological confirmation of the lesion in one case. The pathogenesis of the signs of midbrain disturbance in these patients is uncertain, but may comprise pressure, traction or hypoxia, separately or in combination. There was no positive correlation between the estimated size of the demonstrated haemorrhage and the severity of the neuro-ophthalmological abnormality. PMID- 3843213 TI - Familial myasthenia gravis: a study of three families. AB - Six patients suffering from familial myasthenia gravis belonging to three different families are described. Three brothers are classified as having familial limb-girdle myasthenia and the other three patients, belonging to two other families, are classified as having familial congenital myasthenia. The clinical features, HLA antigen typing, autoantibody screening and anti acetylcholine receptor antibodies were analysed. The variability of this condition from family to family is exemplified in this series and confirms the heterogeneous nature of familial myasthenia gravis. PMID- 3843214 TI - Triplicate post-traumatic sciatic nerve palsy: evoked potentials in the diagnosis. AB - Three episodes of sciatic nerve palsy occurred after open reduction and internal fixation of a fracture-dislocation of the left hip and pelvis in a 20-year-old female injured in a motor cycle accident. There were also ipsilateral open fractures of the tibia and fibula and an open knee injury. When the palsy first developed the patient was in a hip spica plaster cast extending from the costal margin to encase the whole left lower limb. At the time of the second and third episodes of palsy she was in a left below-knee cast and it was not possible to fully assess the function of involved muscles clinically or electromyographically. Psychological factors due to prolonged disability and hospitalization were suspected as a possible cause of weakness. Therefore evoked potentials obtained by stimulation of the peroneal nerves were used to aid diagnosis. There was no response from lumbar and cerebral recording sites on stimulation of the peroneal nerve on the affected side. Diagnosis of a conduction block in the sciatic nerve was thus established. The patient recovered clinically and on repeated testing after motor recovery the cortical potential was attenuated and delayed by 15ms. Recurrent sciatic nerve palsy, occurring three times after hip trauma and with heterotopic bone formation and diagnostic application of evoked potential techniques, has not been previously reported. PMID- 3843215 TI - Neuropathological findings in a case of chronic inflammatory polyneuropathy. AB - A 52-year-old woman presented with increasing pain, weakness, and paraesthesiae of four months' duration in the lower limbs. She suffered from chronic obstructive airways disease and hypertension. Neurological examination revealed wasting of the quadriceps muscles, weakness of the lower limbs, and absent ankle jerks. The sensory examination was normal. Full blood count, ESR, biochemical, immunological, and viral studies, urinary heavy metal assays, and cerebrospinal fluid examination were normal. Nerve conduction studies were consistent with a sensorimotor neuropathy, and electromyographic sampling was consistent with acute denervation. A sural nerve biopsy showed axonal degeneration and segmental demyelination. One month after admission, she developed carbon dioxide retention. Her weakness spread to affect the upper limbs, and she could not be resuscitated after a cardiac arrest three months after admission. General autopsy examination revealed bronchopneumonia. Neuropathological examination showed a lymphocytic infiltrate in the nerve roots of the cauda equina, the lumbosacral plexus, and the sural and vagal nerves. Increased cellularity and collagen were evident in these nerves. A diagnosis of chronic inflammatory polyneuropathy was made. The neuropathology of this entity is discussed. PMID- 3843216 TI - Availability of drug assay results and dosage advice improves antiepileptic care in a specialist neurology outpatient clinic. AB - The incidence of grand mal seizures, distribution of drug levels relative to the therapeutic range and the incidence of side effects were monitored before and after the provision of same-day preconsultation assay results (phenytoin and carbamazepine) to an epilepsy clinic. A total of 300 patients completed the study. The proportion of patients fitting fell from 23.3% at entry to 10% at review (P less than 0.01) while the incidence of side effects fell from 30.7% to 17.3% (P less than 0.01) and the proportion of phenytoin levels in the therapeutic range rose from 41% to 58% (P less than 0.01). Similar patterns were observed in 111 patients who entered the study during a control observation period. The provision of appropriate support services (assay results and dosage advice) to specialist epilepsy clinics allows improvement in the management of epilepsy. PMID- 3843217 TI - Clinical experience with clobazam: a new 1,5 benzodiazepine in the treatment of refractory epilepsy. AB - A benzodiazepine drug, clobazam, was evaluated in 14 refractory epileptic patients, nine of whom received the drug double-blind. Ten patients have been given clobazam long enough to assess results. Four showed marked benefit, four failed to respond and two showed a transient benefit which was maintained by dose changes of both clobazam and clonazepam. Side effects were minimal; doses ranged from 15 to 60 mg per day. Clobazam may have place in the treatment of the Lennox Gastaut syndrome and other types of refractory seizures. PMID- 3843218 TI - Examination of the problems confronting those with epilepsy. AB - This paper reports the findings of two studies using similar numbers of patients with epilepsy, but differing referral bases and investigative tools. It demonstrates that people with epilepsy still experience major problems in the areas of emotional adjustment and stability, personal relationships, and employment. PMID- 3843219 TI - A simple and validated tool for the clinician to assess psychosocial status when conducting anticonvulsant drug trials. AB - Using 94 people with epilepsy, categorized as either idiopathic or post traumatic, and subdivided according to the severity of the disorder, the WPSI was tested and found to be a simple and validated tool for the clinician to assess psychosocial status when conducting anticonvulsant drug trials. PMID- 3843220 TI - Peripheral autonomic surface potential: a quantitative technique for recording autonomic neural function in man. AB - Using EMG equipment with time-locked recording and standard averaging facilities we were able to record a previously poorly studied skin potential. The potential, termed by us by the peripheral autonomic surface potential (PASP), was recorded from the palmar surface of the hand and the plantar surface of the foot in 20 normal subjects. The PASP consisted of a biphasic potential with an initial negative and a later positive peak. The mean palmar PASP latency was 1.51 +/- 0.19 seconds and the mean plantar PASP latency was 2.09 +/- 0.24 seconds. The mean palmar and plantar PASP amplitudes were 485 +/- 100 microV and 102 +/- 45 microV respectively. A mean central sympathetic conduction velocity was calculated at 1.2 +/- 0.21 m/s. In two patients with unilateral lumbar sympathectomy the ipsilateral plantar PASP was absent in one and of considerably reduced amplitude in the other. Both palmar and plantar PASPs were absent or of reduced amplitude in five patients with diabetes mellitus. The study indicates that the PASP may prove a useful quantitative test of central and peripheral autonomic function. PMID- 3843221 TI - Vulnerability of the dorsal root ganglion in experimental allergic encephalomyelitis. AB - The dorsal (posterior) root ganglion is a relatively neglected part of the nervous system from the clinical point of view. In recent studies on the pathophysiology of experimental allergic encephalomyelitis (EAE), the main animal model of multiple sclerosis, the DRG of the rabbit was shown to be the site of extensive inflammation and demyelination and of focal conduction block in a high proportion of the large diameter afferents. The resulting severe functional peripheral deafferentation accounts for the postural disturbance, hypotonia, ataxia and areflexia in rabbits with EAE. The vulnerability of the DRG is due to a deficient blood-nerve barrier and possibly also to a susceptibility of the branch point of the ganglion neurone to demyelination-induced conduction block. These and other studies in experimental animals suggest that in man the DRG may be a preferential (but neglected) site of focal structural and functional abnormalities in inflammatory and also other neurological diseases. PMID- 3843222 TI - Experimental allergic encephalomyelitis: effect of neonatal exposure to neuroantigen or neuroantigen immune cells on subsequent reactivity as adults. AB - Neonatal Lewis rats are resistant to both active induction of EAE with neuroantigen and passive induction by transfer of immune cells. Actively sensitized neonates are, as adults, resistant to further active induction of disease, but are susceptible to passive induction with immune cells. Passively sensitized neonates are susceptible to active and passive disease as adults. In fact, actively sensitized adult animals which had received immune cells as neonates develop EAE much sooner than control animals, suggesting a memory response and the persistence of the transferred cells in the host. The cells persist for at least six months and these animals might be considered to be inapparent carriers of autoimmune disease. PMID- 3843223 TI - Spatial contrast sensitivity in patients with multiple sclerosis. AB - Contrast sensitivity tests a basic visual function which is not examined by conventional visual acuity testing or visual evoked responses. It is frequently abnormal in patients with multiple sclerosis. The lack of relationship between VERs and SCSF implies that contrast sensitivity measures aspects of the visual system not examined by the conventional electrophysiological technique, probably visual function situated beyond the anterior visual pathway. It is therefore a useful complementary diagnostic test for patients with multiple sclerosis. Both VER and spatial contrast sensitivity separately detect a high proportion of patients with multiple sclerosis. When used in combination, the two techniques give a yield which approaches 100%. Contrast sensitivity testing as used here is cumbersome and time-consuming. Use of fewer spatial frequencies and/or adaptation of VER techniques for estimation of a contrast threshold may be more applicable for clinical use. PMID- 3843224 TI - A decision analytic approach to the role of visual evoked response and cerebrospinal fluid abnormalities in the management of singular spinal sclerosis. AB - With the use of Bayesian decision analytic techniques we assess the role of visual evoked response (VER) and cerebrospinal fluid (CSF) examinations in the investigation of patients with suspected singular spinal sclerosis. An abnormal VER increases the probability of multiple sclerosis by 50%. An associated CSF abnormality does not affect this probability. In a setting of a negative VER, CSF abnormalities increase the probability of multiple sclerosis by 27%. On currently available data, VER should therefore be the primary investigation in patients with suspected singular spinal sclerosis. If the result is abnormal myelography may be omitted. CSF examinations are only useful if VER facilities are not available. PMID- 3843225 TI - Ophthalmological complications of cryptococcal meningitis. AB - Two patients with cryptococcal meningitis associated with ophthalmological complications are described. One patient developed a cryptococcal fundal lesion which disappeared during chemotherapy. Chronically raised intracranial pressure was associated with a visual field defect. This resolved with repeated lumbar punctures. The second patient developed visual deficits secondary to papilloedema and responded to optic nerve decompression. In both cases CT scanning demonstrated swelling of the optic nerves. In the second patient this regressed after decompression. A review of the variety of the ophthalmological complications of cryptococcal meningitis and their prevalence is presented. The risk of developing severe visual disability is assessed. PMID- 3843226 TI - Cryptococcal infection of the central nervous system. AB - Two patients with cryptococcal infection of the central nervous system are described. These cases illustrate the variability in mode of presentation of this disease. Upon diagnosis, both patients were initially treated with a combination of amphotericin B and 5-fluorocytosine. Despite an early clinical and serological response, limiting side effects occurred in both cases and 5-fluorocytosine treatment was terminated. In Case 2, 5-fluorocytosine therapy was reinstituted at lower dosages later in the course of the illness, with good results. Combination therapy is superior to amphotericin B alone. However, to circumvent significant toxicity problems close monitoring of renal function, peripheral blood counts and serum 5-fluorocytosine levels are essential. Treatment is usually administered for a minimum of six weeks and remission is assessed on clinical, mycological and serological grounds. Thereafter, adequate follow-up is mandatory. PMID- 3843227 TI - Phytanic acid oxidase deficiency in childhood. AB - Tables 2 and 5 summarize the major clinical and biochemical findings in these patients. Cases 1 and 2 resemble clinically the previous cases of children reported as suffering from infantile phytanic acid storage disease, Zellweger's disease, or neonatal adrenoleucodystrophy. Cases 3 and 4 differ strikingly from these and from one another. Numerous questions remain unanswered, but it seems likely that these patients have in common defects in peroxisomal function which are related but not identical. Why some patients with phytanic acid oxidase deficiency do not have significant elevation of serum phytanic acid is not known. These results, however, make it clear that a normal serum phytanic acid level does not exclude phytanic acid oxidase deficiency. In children with a progressive neurological illness, with liver disease, retinal disease, unexplained neuropathy or deafness, detailed studies of fatty acid metabolism are indicated, including lipoproteins, serum phytanic acid, C26:C22 long-chain fatty acid ratios, serum pipecolic acid and phytanic acid oxidase levels. Electron microscopy of liver biopsy specimens should be considered. Phytanic acid oxidase may prove a useful marker for some of these illnesses, and its usefulness could extend to prenatal diagnosis and assist in genetic counselling. PMID- 3843229 TI - Dermatoglyphics in ichthyosis vulgaris. PMID- 3843228 TI - Adult Lennox Gastaut syndrome: features and diagnostic problems. AB - A series of 25 adults with Lennox Gastaut syndrome is described, with special reference to the occurrence of clinical features resembling complex partial seizures. The majority of the patients showed seizure patterns that at one time or another had been mistaken for temporal lobe epilepsy. The use of video monitoring to make the definitive diagnosis in this condition becomes most important when the true inaccuracy of eyewitness descriptions of seizure patterns becomes evident, and the implications for the patient of the refractory nature of the tonic seizure is also revealed. This aspect of Lennox Gastaut syndrome does not seem to have been emphasized in series dealing with younger patients and it may well be that adult patients tend to display these characteristics which render diagnosis more difficult. PMID- 3843230 TI - Efficacy of miconazole in superficial mycoses. PMID- 3843231 TI - Systemic vasculitis. PMID- 3843232 TI - DLE changing into squamous cell carcinoma in an Indian farmer. PMID- 3843233 TI - Acne necrotica. PMID- 3843234 TI - Porphyria cutanea tarda symptomatica. PMID- 3843235 TI - Red cell phosphate metabolism in full-term neonates. AB - The effects of hypoxia and feeding on red cell inorganic phosphate (Pi) concentrations were studied in neonates. Although hypoxia caused a rise in extracellular Pi, the intracellular concentration of this ion did not change in comparison to control infants of the same age (first 24 h). As a result of these changes, the distribution of phosphate ions across the erythrocyte membrane was significantly lower in the hypoxic infants than in the controls. In the hypoxic infants, adenosine triphosphate (ATP) levels in the red cells were found significantly lower than in controls, while the 2,3-diphosphoglycerate (2,3-DPG) levels were raised. In breast-fed 2 or 3-day-old neonates, both plasma and red cell Pi were found to be increased but to different degrees, affecting therefore the molar Pi distribution, which was lower than in the controls of the first day. In these infants, ATP was lower and 2,3-DPG higher than in the controls of the first day of life. These findings suggest that intracellular phosphate metabolism in neonates does not follow extracellular phosphate changes. Further investigation is needed to elucidate the controlling factors. PMID- 3843236 TI - [Serum zinc levels in children with celiac disease]. AB - The gastrointestinal tract is an important organ in the maintenance of zinc homeostasis. We determined the serum zinc level in 140 samples from 78 children with coeliac disease in different phases. Abnormally low values were found only in children with acute coeliac disease (50% below 2 SD), but not in children receiving a gluten-free diet. We therefore suggest to measure the serum zinc concentration in children with coeliac disease and to add a zinc supplementation in patients with diminished zinc values during a period of 2-4 weeks, because zinc deficiency could inhibit the recovery of the intestinal mucosa. PMID- 3843237 TI - Endocardial fibrosis and hydrops fetalis in a premature infant. AB - We describe a premature neonate with endocardial fibrosis associated with hydrops fetalis. The infant did not have any other cardiac disorder and expired with congestive heart failure when five days old. Endocardial fibroelastosis has been previously described in neonates but is rare and is usually associated with other cardiac malformations. In only two previous reports was endocardial fibroelastosis associated with hydrops and in both of these cases there were also valvular deformities. We also discuss the possible significance of this association. PMID- 3843238 TI - Effect of alpha-methyldopa excreted in human milk on the breast-fed infant. AB - A nursing infant whose mother took alpha-methyldopa (alpha-MD) was followed for 3 months. Analysis of maternal serum and milk as well as the infant's serum and urine for alpha-MD revealed that the drug was excreted into maternal milk, absorbed by the infant and excreted in her urine, but no adverse clinical effects were noted during the follow-up period. alpha-MD is excreted in human milk in concentrations that probably do not harm the breast-fed infant. PMID- 3843239 TI - A fatal case of Q fever hepatitis in a child. AB - A two-year-old boy of Arabic extraction presented with progressive jaundice and prolonged pyrexia. Both IgM and IgG immunofluorescent antibody titers for Q fever were 1:1280. Two goats and one cow of the domestic animals owned by the family also had positive antibody titers against Q fever. In spite of antibiotic treatment with tetracyclines and chloramphenicol, the hepatic involvement progressed gradually. On the twentieth day of admission the child succumbed from hepatic failure. This child presents a rare case of fatal hepatic failure due to Q fever. PMID- 3843240 TI - [Current therapy of meningococcal infection in childhood]. AB - The article discusses the present therapy of acute meningococcal septicemia. Besides adequate antibiotic treatment, the importance of early and aggressive shock and respiratory therapy, i.e. endotracheal intubation and mechanical ventilation, is stressed. The role of corticosteroids is discussed. The use of anticoagulants, fibrinolytic agents and inhibitors of fibrinolysis is discouraged. PMID- 3843241 TI - Extrapyramidal dysfunction after domperidone. PMID- 3843242 TI - Oculogyric crisis due to domperidone therapy. PMID- 3843243 TI - Neonatal hypercalcemia in preterm infants fed with human milk. AB - Hypercalcemia (serum Ca greater than or equal to 2.83 mmol/l) was detected in 10 premature infants (gestational age: 31-37 weeks and birthweight: 1100-1950 g). All were fed with pooled human breast milk. Urinary Ca excretion was high (greater than 0.200 mmol/kg/24 h) in all but one infant while serum phosphorus (P) concentration and urinary P excretion were low. Serum immunoreactive parathyroid hormone and plasma 25-hydroxyvitamin-D concentrations were normal. A significant positive correlation was found between serum Ca concentration and urinary Ca excretion, and a negative correlation between serum Ca concentration and serum P concentration or urinary P excretion. Hypercalcemia disappeared spontaneously in two patients, was corrected by a humanized milk in three patients and by P supplementation in five patients. These data suggest that neonatal hypercalcemia is related to P depletion induced by human breast milk in premature infants. PMID- 3843244 TI - Interruption of breast-feeding versus phototherapy as treatment of hyperbilirubinemia in full-term infants. AB - Since 1963 there are reports in the literature about the syndrome of breast milk jaundice. The factors that may contribute to this phenomenon are still unclear. In our study the effect of interruption of breast-feeding in 25 jaundiced full term infants was compared to the effect of phototherapy in 25 jaundiced otherwise healthy full-term infants. The results show that this treatment has the same therapeutic effect as phototherapy (p greater than 0.05) without its stressful complications and can be recommended as alternative treatment of this type of hyperbilirubinemia. PMID- 3843245 TI - The fragile X syndrome (Martin-Bell syndrome). Clinical and cytogenetic findings in 16 prepubertal boys and in 4 of their 5 families. AB - Clinical and cytogenetic findings from 16 prepubertal males with the fragile X syndrome (X-linked mental retardation with postpubertal macro-orchidism and fragile site at Xq27/8, or Martin-Bell syndrome) and from their families are reported. During the first postnatal years, protruding, large ears, full periorbital tissue, and thick septum and alae nasi were the most characteristic phenotypic findings, while after approximately 6 years of age a longish face with full lips and prominent maxilla and mandible became more distinct. It was estimated that a clinical suspicion of the fragile X syndrome could be made in most of the 16 boys from phenotypic findings in combination with the characteristic developmental profile described in our previous paper. The marker X chromosome was demonstrated in each of the 16 patients; the incidence of fra(X) positive cells did not correlate with either age or the degree of mental retardation. 13 boys stemmed from 2 families, the other 3 were sporadic cases. In one family with 11 affected boys, the gene was transmitted by 4 brothers, grandfathers to the probands, who were intellectually normal; three of them did not show the clinical picture of the fragile X syndrome and did not express the marker. All mentally subnormal heterozygote females and one half of daughters of heterozygotes revealed the marker, but this was present only in a minority of non retarded adult heterozygotes. In contrast to the overall incidence of about 1/4 to 1/3 mentally retarded heterozygotes, all 15 daughters of the four normal obligatory hemizygous brothers were of normal intelligence. PMID- 3843247 TI - Beneficial effects of high-dose intravenous gammaglobulin on the accelerated phase of Chediak-Higashi syndrome. AB - The Chediak-Higashi syndrome (CHS) is a rare, autosomal-recessively inherited disease characterized by giant cytoplasmic granules in neutrophils, monocytes and lymphocytes. It has been reported that a lymphoma-like illness develops in the accelerated phase of the syndrome and that early death ensues. Treatment of CHS has not been established, particularly when the accelerated phase develops. We treated a 15-year-old boy, who had entered into the accelerated phase, with high dose intravenous gammaglobulin. The treatment was beneficial in the management of accelerated phase of CHS. PMID- 3843246 TI - [Effectiveness of low- and high-dose caffeine on idiopathic bradycardia and hypoxemia in premature infants]. AB - The efficacy of low and high dose caffeine on idiopathic bradycardia and hypoxaemia was tested in premature infants. Among 41 infants admitted to the study 21 fulfilled the criterion for treatment, e.g. greater than 3 bradycardia or greater than 3 hypoxaemia during 6 h, and received a low dose of caffeine citrate (loading dose 10 mg/kg, maintenance dose 5 mg/kg/24 h) resulting in serum concentrations of 42 +/- 19 mumol/l (M +/- SD). Four infants had to be excluded later because a possible cause for the increased frequency of bradycardia and hypoxaemia was found. Ten infants met the treatment criterion once more and got a double dose of caffeine resulting in serum concentrations of 90 +/- 35 mumol/l. The efficacy of caffeine was evaluated by comparing for each infant the 12-h period preceding the treatment with three 12-h periods during treatment. Low dose caffeine reduced significantly the frequency of bradycardia (less than 0.01), but not the frequency of hypoxaemia. In those infants with insufficient response, who consequently got high dose caffeine, the frequency of bradycardia decreased significantly (p less than 0.01), whereas the frequency of hypoxaemia did not. These results have to be confirmed in a randomized placebo controlled trial. PMID- 3843248 TI - [Annual meeting of the Swiss Society of Pediatrics. Zurich, 7-8 June 1985. Abstracts]. PMID- 3843249 TI - Mother to newborn and infant transmission of hepatitis B infections. PMID- 3843250 TI - Cholestasis due to D-penicillamine toxicity. PMID- 3843251 TI - In vitro susceptibility of gram-negative bacilli towards six newer cephalosporins. PMID- 3843252 TI - Plasmapheresis: a review from the University Hospital, Kuala Lumpur. PMID- 3843253 TI - Epidemiology of persistent hepatitis B virus infection. PMID- 3843254 TI - Should subspecialty training be recognized? PMID- 3843255 TI - Reduced bacterial adherence to silicone plastic neurosurgical prosthesis. AB - Bacteria have been shown to adhere to smooth surfaces, such as shunts, by secreting a complex polysaccharide coat called the glycocalyx. We assume that if bacterial adherence could be reduced to zero, foreign-body-related infections would be essentially eliminated. This study describes a new technique for quantitating bacterial adherence to plastic using radioactive chromium, and demonstrates that presoaking the silicone plastic surgical tubing used for ventriculoperitoneal and ventriculoatrial shunts in bacitracin A solution (50,000 units in 250 ml) reduces the adherence of Staphylococcus epidermidis by 54%. We conclude that pretreatment of a hydrocephalic shunt tubing with an aqueous bacitracin solution before its implantation may help to reduce the postoperative shunt infections due to direct contamination of the shunt at the time it is inserted. PMID- 3843256 TI - Intracranial meningiomas in children. AB - Thirteen cases of intracranial meningioma presenting in childhood were encountered at the Hospital for Sick Children in Toronto over a 51-year period. The clinical features, radiology, operative findings and outcome are reviewed. PMID- 3843257 TI - Mode of prevention by phototherapy of cerebellar hypoplasia in a new Sprague Dawley strain of jaundiced Gunn rats. AB - Postnatal changes in cerebellar wet weight and the effect of phototherapy were studied using a new strain of Gunn rats with a genetic background of the Sprague Dawley strain (SDGR). The cerebellar wet weight of homozygous rats reached a maximum at postnatal day 10 and then it gradually decreased up to day 20, suggesting that the cerebellar hypoplasia of the rats was a consequence both of cellular underdevelopment and degeneration. Histological examinations of the 10 cerebellar lobules showed that lobules I-VIII of homozygotes were severely damaged while lobules IX and X were less affected, coinciding with previous reports of Wistar strain Gunn rats. Photoirradiation with blue light of homozygous rats from day 1 through 15 markedly improved their cerebellar development, and the cerebellar wet weight of these rats was almost comparable to that of heterozygous rats as examined at day 30. Photoirradiation from day 1 to 5 protected, though not fully, lobules I-V and VIII against damage, but not lobules VI and VII at all. Photoirradiation from day 6 to 10 prevented all the lobules from hypoplasia. Irradiation from day 11 to 15 was effective only at the tips of lobules VI and VII. These results indicate that the cerebellar hypoplasia of jaundiced Gunn rats can be effectively prevented by a series of photoirradiation during a particular period after birth and also that the most effective period is different among the lobules. PMID- 3843258 TI - Magnetic resonance imaging of the Dandy-Walker malformation. AB - Five cases of the Dandy-Walker malformation are described using the magnetic resonance (MR) scan as a primary imaging technique. The patients' ages ranged from 34 weeks (in utero) to 41 years; their clinical and neuroanatomical characteristics encompassed the entire spectrum of the malformation. Clear visualization of the greatly enlarged posterior fossa, Dandy-Walker cyst, and absence of the inferior vermis established the pathological diagnosis and excluded other structural defects. In 3 patients, MR demonstration of the aqueduct and evidence of pressure on adjacent tissue aided in the surgical planning for ventricular decompression. The MR scan is a significant advancement in the radiological diagnosis of the Dandy-Walker malformation. The major technical advantage of the scan consists in its ability to delineate intracranial morphology in multiple planes. PMID- 3843260 TI - The neuro image quiz. Diastematomyelia. PMID- 3843259 TI - Spinal metastasis in primitive neuroectodermal tumors (medulloblastoma) of the posterior fossa: evaluation with CT myelography and correlation with patient age and tumor differentiation. AB - Twelve consecutive children with primitive neuroectodermal tumors of the posterior fossa (PNET-PF) were evaluated for spinal metastases with CT metrizamide myelography (CTMM) in the early postoperative period. Metastases were identified in 5 children (42%) and all were noted to have deposits in the thoracic region. All children with metastases were less than 3 years old and had differentiated PNET-PF. PMID- 3843261 TI - Suprasellar mass in an Indian girl. PMID- 3843263 TI - An electron microscopic observation on the developing sympathetic ganglia of hamsters. AB - An electron microscopic observation has been made on the superior cervical ganglia of 2-day-old hamsters, in which most nerve cells were still immature and were named as primitive sympathetic nerve cells. They were small in size and 2 or 3 cells were grouped together to become many cell clusters. Only the periphery of each cell cluster was enclosed by the satellite cell cytoplasm. In these primitive nerve cells, only mitochondria, granular endoplasmic reticulum and Golgi apparatus were relatively prominent and the other cytoplasmic organelles were poorly developed. Axo-somatic synapses were found in the ganglia. Many unmyelinated nerve fibers were present in the ganglia. These nerve fibers were surrounded by the Schwann cell cytoplasm. Active mitotic divisions of the nerve cells were found in the superior cervical ganglia of 9-day-old hamsters and resulted in an increase in the number of nerve cells. The size of the nerve cells also increased and became young sympathetic nerve cells. In the 10-day-old hamsters, each young nerve cell was entirely enclosed by the satellite cell cytoplasm. The number of cytoplasmic organelles was increased considerably. Axo somatic and axo-dendritic synapses were also observed in the ganglia of 10-day old hamsters. The present study revealed that the developed cytoplasmic organelles in the young nerve cells of the 30-day-old young hamsters reached the level of the mature nerve cells in the ganglia of the adult hamsters. Multiple desmosomes were detected in the ganglia of both the young and adult hamsters. PMID- 3843262 TI - Occurrence of an astrocytoma in a patient with Williams syndrome. AB - The Williams elfin facies syndrome (Williams-Beuren syndrome) is a disorder characterized by a typical facies, supravalvular aortic stenosis and mental retardation. Its coexistence with a brain tumor has, so far, never been described. Recently, we treated a patient who was previously diagnosed as having Williams syndrome for a cerebral astrocytoma. In view of the incidence of astrocytomas in children and the occurrence of Williams syndrome, we want to report this coincidence. PMID- 3843265 TI - [Results and prognostic factors in cancer of the uterine cervix]. PMID- 3843264 TI - Mechanism of pigeon liver malic enzyme: modification of essential carboxyl groups. AB - The maximum velocity of the reaction catalyzed by the pigeon liver malic enzyme depends on the ionization of a functional group of pKa 6.7. This pKa value is independent of temperature within the range 30 degrees-49 degrees C, suggesting the ionization of a carboxyl group. The enzyme activity is inactivated by N-ethyl 5-phenylisoxazolium-3'-sulfonate (Woodward reagent K) at pH 6.0 and 25 degrees C. N-Methylhydroxamine regenerates the enzymatic activity whereas glycine ethyl ester does not. The addition of Mn2+, NADP+, and L-malate to the incubation mixture decreases the inactivation rate, suggesting that the reaction takes place in the active center. The binding capacities of the modified enzyme with NADP+, L malate, pyruvate, and Mn2+ are not impaired. The kinetic and chemical evidence indicates that the inactivation is due to the modification of a carboxyl group which may be from glutamyl or aspartyl residues of the enzyme. This carboxyl group might function as a general acid-base catalyst. A detailed mechanism in terms of the exact amino acid residues involved is proposed. PMID- 3843266 TI - [Experience in a unit for pregnant adolescents]. PMID- 3843267 TI - [Incidence of Chlamydia trachomatis in pregnancy]. PMID- 3843268 TI - [Acquired immunodeficiency syndrome. Gyneco-obstetrical aspects]. PMID- 3843269 TI - [Regulations applicable to fertilization in vitro and embryo transfer]. PMID- 3843270 TI - [Risk, maternal and fetal of pregnancy in patients with heart valve diseases]. PMID- 3843271 TI - [Intrasellar expansive prolactin-secreting or non-secreting processes (clinical experience in 80 cases)]. PMID- 3843272 TI - [Results of the treatment of cancer of the vagina]. PMID- 3843273 TI - [Management of a severe hypertensive syndrome of pregnancy, in a base hospital]. PMID- 3843274 TI - [Culture media and quality control in an in vitro fertilization program]. PMID- 3843275 TI - [Ectopic pregnancy (experience in 132 cases)]. PMID- 3843276 TI - [Examination of the female with postmenopause hemorrhage]. PMID- 3843277 TI - [Bacteriology and principles of medico-surgical treatment of tubo-ovarian abscess]. PMID- 3843278 TI - [Clinico-epidemiological study of abortion, in Chilean women]. PMID- 3843280 TI - [Morphological classification of the stage of maturation of oocytes recovered in an in vitro fertilization program]. PMID- 3843279 TI - [Uterine inversion: a 20-year review]. PMID- 3843282 TI - [Herpes genitalis]. PMID- 3843281 TI - [Results of the treatment of adenocarcinoma of the endometrium]. PMID- 3843283 TI - [Ureteral lesions in gynecological, oncological and general surgery]. PMID- 3843284 TI - [Gamete intra-fallopian transfer (GIFT). Report of the 1st pregnancy]. PMID- 3843285 TI - [Ventriculo-amniotic shunt in a fetus with hydrocephalus]. PMID- 3843286 TI - [The video colpoperineogram of normal micturition]. PMID- 3843287 TI - [Late primiparity]. PMID- 3843288 TI - [Aggressive management of imminent abortion in the second trimester of pregnancy due to cervix incompetence]. PMID- 3843289 TI - [Effect of maternal fasting on basal electronic monitoring of fetal heart rate]. PMID- 3843290 TI - [Endotoxic shock in septic abortion]. PMID- 3843291 TI - Frontiers in immunology. PMID- 3843293 TI - Molecular genetics of class I genes--1984. PMID- 3843292 TI - Monoclonal antibodies: novel to Nobel. PMID- 3843294 TI - Progress in complement research: 1984. PMID- 3843295 TI - Immunotoxicology--1984. PMID- 3843296 TI - NK cells and tumor immunity: 1984. PMID- 3843297 TI - Dexamethasone stimulation of fetal rat lung antioxidant enzyme activity in parallel with surfactant stimulation. AB - It has recently been determined that fetal lung antioxidant enzyme activity markedly increases late in gestation. A test was made of whether this normal late in-gestation change in O2-protective enzymes would be responsive to the maturing effect of hormonal (glucocorticoid) treatment. Pregnant rats received 0.2 mg/kg of dexamethasone (or saline) at 48 and 24 hours prior to delivery of their fetuses on gestational days 19, 20, 21, and 22 (newborn). Lung disaturated phosphatidylcholine showed an expected response to prenatal dexamethasone exposure with significant elevations of surfactant lipid at gestational days 20 and 21. A similar effect of prenatal dexamethasone treatment on the lung antioxidant defensive system was found. Superoxide dismutase, catalase, and glutathione peroxidase--enzymes protective against hyperoxia-induced lung injury- showed an accelerated pattern of maturation with significant increases in the dexamethasone-treated fetal lungs compared with control fetal lung enzyme levels at gestational days 20 and 21. The results suggest that prenatal dexamethasone treatment may have dual benefits when used in impending premature deliveries- that is, it may stimulate maturation of both the surfactant system and also the antioxidant enzyme system, and this maturation can help protect the premature newborn's lungs from the toxic complications of hyperoxic therapy that may be required because of immaturity. PMID- 3843298 TI - [Effect of different methods of reflexotherapy on bronchial nonspecific hyperreactivity in bronchial asthma in children]. PMID- 3843299 TI - A computational model of hippocampal place fields. AB - There are neurons in the hippocampus that become active only when an animal is near a particular location in a specific environment. The activity of some of these units is known to be governed by the configuration of a small set of discrete landmarks. In order to respond in this fashion, these neurons must, in effect, be able to recognize particular locations. A model of this recognition process is described which is able to make quantitative predictions about how the response of these place-field units varies as properties of the environmental landmarks are manipulated. Computer simulations of the model show that it is consistent with the available quantitative data. These simulations also predict large, characteristic changes in place-field location and size with manipulations of the environmental landmarks. Comparison of this kind of prediction with actual experiments will serve as a test of the validity of the model. PMID- 3843300 TI - Epinephrine-induced learning under anesthesia: retention performance at several training-testing intervals. AB - While under deep barbiturate anesthesia, rats received a series of 10 classical conditioning trials in which white noise was paired with intramuscular shock. The anesthetized animals received either saline or epinephrine injections prior to the training trials. Independent sets of animals were tested for retention performance 2, 7, or 15 days after training. In these test trials, a conditioned suppression measure was used in which the white noise was turned on while the animals were drinking. The results indicated that the animals that had received saline while trained under anesthesia exhibited no evidence of later retention. Animals that had received epinephrine injections prior to training under anesthesia suppressed their drinking in the presence of the white noise when tested 2 or 7, but not 15, days later. Thus, the results indicate that epinephrine can enable learning under anesthesia and, in addition, forgetting occurs within 15 days. PMID- 3843301 TI - Shock controllability and the nature of stress-induced analgesia. AB - Three experiments were conducted to examine the impact of the escapability of shock on the nature of the analgesia produced by shock. In Experiment 1, rats were exposed to 0, 20, 40, or 80 escapable or yoked inescapable shocks. Tail flick testing revealed a "double-peak" pattern in which analgesia was present after 20 and 80 shocks. This was true for both escapable and inescapable shock. Analgesia after 20 escapable or inescapable shocks was insensitive to naltrexone, as was the analgesia after 80 escapable shocks. However, the analgesia after 80 inescapable shocks was completely blocked by naltrexone. Moreover, in Experiment 2 the analgesia following 80 inescapable shocks persisted for at least 2 hr, whereas it dissipated rapidly following 80 escapable shocks. Further, the analgesia produced by escapable shock even dissipated with the continued occurrence of escapable shock. Finally, shock controllability was shown to alter the analgesia produced by subsequent exposure to shock. Prior experience with controllable shock completely blocked the late-appearing naltrexone reversible analgesia; prior experience with uncontrollable shock led it to appear sooner. PMID- 3843302 TI - Differential changes in noradrenaline turnover in specific regions of rat brain produced by controllable and uncontrollable shocks. AB - A series of three studies was performed to investigate the effects of the ability to avoid or escape shock (controllability) and the lack of ability to do so (uncontrollability) on noradrenergic neurons in various brain regions of male Wistar rats. The levels of noradrenaline (NA) and its major metabolite, 3-methoxy 4-hydroxyphenylethyleneglycol sulfate (MHPG-SO4), in the hypothalamus, amygdala, thalamus, midbrain, hippocampus, cerebral cortex, pons plus medulla oblongata, and basal ganglia were measured fluorometrically. These studies indicated that after 3 hr and 6 hr in a free operant avoidance-escape stress procedure, the experimental rats able to avoid or escape shock showed greater increases in NA turnover (lower NA levels and higher MHPG-SO4 levels) in specific brain regions (i.e., the hypothalamus, amygdala, and thalamus) than the yoked rats unable to control the same shock. After 21 hr of stress, in contrast to stress of either 3 hr or 6-hr duration, the yoked rats exhibited a more marked enhancement of NA turnover in these brain regions than did experimental rats. Once shock controlling responses had been acquired and well established by experimental rats, the responses of NA neurons in these rats did not differ markedly from those in the nonshocked control rats. Yoked rats given the same repetitive sessions of uncontrollable shock displayed sustained increases in NA turnover preferentially in the hypothalamus and amygdala, compared with the experimental rats. These results suggest that NA release in specific brain regions in the experimental "coping" rats is increased before the rats have learned the effective coping response. However, once a coping response is firmly established, NA release is reduced. PMID- 3843303 TI - Tumor growth in rats: conditioned suppression of food intake and preference. AB - Rats with experimental tumors developed strong aversions to a novel diet they consumed during tumor growth. Aversions were not evident when the food available during tumor growth was familiar laboratory chow. The impact of learned food aversions on tumor anorexia was evidenced by more severe and long-lasting hypophagia in tumor-bearing animals maintained on a novel diet than in those maintained on laboratory chow. Thus, when a diet is a salient target for the development of learned aversions, the aversions that develop to it can make substantial contributions to the overall syndrome of tumor anorexia. In addition, frequent changes of the diet offered to tumor-bearing rats was associated with milder anorexia than that produced by maintaining tumor-bearing rats on a constant diet. Apparently, the prevention of learned food aversions, or the repeated replacement of aversive foods, can minimize the impact of learned food aversions and attenuate anorexia in tumor-bearing animals. PMID- 3843304 TI - Neurochemical and behavioral factors in the development of tolerance to anorectics. AB - Tolerance and cross-tolerance among several anorectic drugs were investigated in four separate tests. The same animals served as subjects in all four tests. In the first test, animals given milk shortly after injection of 3 mg/kg amphetamine (Cont group) developed tolerance to amphetamine anorexia, but animals given milk when amphetamine's anorectic effects had worn off (Noncon group) did not develop tolerance in spite of equal drug exposure. In the second test, Cont animals were tolerant to 2 mg/kg apomorphine, a drug with a neurochemical action related to amphetamine. No tolerance to 2 mg/kg apomorphine was shown by the Noncon animals. Next, it was found that both Cont and Noncon groups were tolerant to a smaller dose of 1.25 mg/kg apomorphine. The final test replicated part of the first test; that is, the Cont group was tolerant to amphetamine, but the Noncon group was not. In addition, animals in neither group were tolerant to anorexia produced by 5 mg/kg fenfluramine, a drug whose action is neurochemically different from amphetamine and apomorphine. From these experiments it appears that both learning and specific neurochemical mechanisms are involved in the development of tolerance to anorectic drugs. PMID- 3843305 TI - An intraventricular infusion model for inducing morphine dependence in rats: quantitative assessment of precipitated withdrawal. AB - An experimental model of morphine dependence, in which rats were made dependent upon morphine by intraventricular infusion, is described. Morphine dependence was assessed and quantified by a series of withdrawal signs that were induced by the intraperitoneal administration of the morphine antagonist naloxone. The infusion of different concentrations of morphine resulted in the production of physical dependence, the severity of which was directly correlated with the concentration of morphine infused. A weak to moderate degree of dependence characterized by such withdrawal signs as teeth chattering, whole-body shakes, and vocalization was produced by infusions of morphine less than 5 micrograms/hr. A strong degree of physical dependence characterized by additional dominant withdrawal signs such as jumping and launching was produced by the infusion of 50 micrograms/hr morphine. The morphine pellet model that most closely approximated this degree of dependence was a three-pellet model in which a single 75-mg morphine pellet was implanted at 48-hr intervals. Abstinence precipitated by removal of the morphine containing osmotic minipumps was characterized primarily by teeth chattering and whole-body shakes which persisted for at least 48 hr. PMID- 3843306 TI - A proposed animal model for hallucinogens based on LSD's effects on patterns of exploration in rats. AB - The utility of various measures of exploratory activity in rats was studied in order to develop an animal model of hallucinogens. A hole board chamber, connected by a door to a home cage, provided two test situations. Rats either were placed directly into the hole board with the door closed (forced exploration) or were placed in the home cage and, following adaptation, the door was opened (free exploration). The monitoring system provided both quantitative measures (crossovers, rearings, and hole pokes) and qualitative measures of locomotor patterns. A series of four experiments, with doses of 2-160 micrograms/kg LSD, revealed three major categories of effects, distinguishable on the basis of dose dependency, time course, or response to environmental manipulation: increased avoidance of novel and central areas, disruption of the spatial patterning of locomotion, and suppression of rearing. All three effects exhibited partial tolerance 24 hr after one injection of 30 micrograms/kg LSD and complete tolerance after five daily injections. The possibility that LSD's enhancement of neophobia in rats may be a valid analogue model of its intensification of affective reactions in humans is discussed. PMID- 3843307 TI - Short-term and long-term habituation of the acoustic startle response in chronic decerebrate rats. AB - Chronic decerebrate rats, maintained in good condition for 31-84 postoperative days, showed significant within-session habituation of the acoustic startle response. However, they showed no habituation over days under conditions that produced significant response deficits in controls. The decerebrates' stimulus provoked response deficits may have endured for up to 40 min between sessions, and they were apparently more than normally susceptible to stimulus-provoked sensitization. The data are consistent with intrinsic models which assume that the mechanisms for short-term habituation are intrinsic to the stimulus-response (S-R) pathway in the lower brain stem. On the other hand, relatively permanent long-term habituation of the acoustic startle response must be mediated by extrinsic mechanisms rostral to the S-R pathway which superimpose an inhibitory influence on that pathway. PMID- 3843308 TI - Behaviorally measured refractory periods are lengthened by reducing electrode tip exposure or raising current. AB - Small tip exposures and high currents allow the stimulation of high-threshold axons. These studies were conducted to measure the effects of current and tip surface area on stimulation parameters required to produce a constant rate of self-stimulation of lateral hypothalamic sites, or of circling when stimulating medial brain stem sites. Thresholds for circling decreased when tip surface area was decreased to 0.01 mm2. Refractory period curves for both circling and self stimulation were shifted to slightly longer intrapair intervals when tip surface area was decreased or current was increased. This suggests that long refractory period axons make larger contributions when current density is increased. Chronaxies were not lengthened by small tip exposures but were reduced when electrodes were placed far lateral to the circling substrate. PMID- 3843309 TI - Female and male sexual responses in female cats with ventromedial hypothalamic lesions. AB - The effects of lesions in the ventromedial hypothalamus (VMH) on male and female sexual behavior in female cats were examined. Following preoperative testing for receptivity, proceptivity, and male mating behavior, 27 female cats received either lesions in the anterior or posterior portion of the VMH or sham lesions. Neither of the VMH lesion placements reduced proceptivity and receptivity scores. However, the female mating pattern was significantly altered in that although females in both lesion groups initially allowed a stud male to mount, they usually did not allow the male to intromit. As in rodents, the VMH in the cat appears to be an important neural area for the display of normal female sexual behavior. Low levels of male sexual behavior were seen in the three groups preoperatively, and no changes were observed in the levels of male behavior following lesion placement. Thus, because lesions that disrupted female behavior did not affect male sexual behavior, it appears that the neural areas controlling homotypical and heterotypical sexual behaviors are not necessarily neurally linked. PMID- 3843310 TI - Role of the anterior hypothalamus-preoptic area in the regulation of courtship behavior in the male Canadian red-sided garter snake (Thamnophis sirtalis parietalis): lesion experiments. AB - Lesions of the medial preoptic area and/or the ventromedial hypothalamus resulted in an abrupt and immediate decline in courtship behavior in adult male Canadian red-sided garter snakes (Thamnophis sirtalis parietalis). Lesions of the more anterior portions of the preoptic area resulted in a more gradual, delayed decline in courtship behavior. Male snakes sustaining lesions dorsal, ventral, or caudal to the anterior hypothalamus-preoptic area exhibited no change in courtship behavior relative to controls. Measurements of testis size, spermatogenic stage, and circulation levels of androgens revealed no differences between any of the groups. There were marked differences in the change in hematocrit over time between the groups. These results indicate that the anterior hypothalamus-preoptic area is involved in the control of courtship behavior in the adult male red-sided garter snake. Moreover, it is suggested that the stimulus affecting the anterior hypothalamus-preoptic area to activate courtship is temperature related. PMID- 3843311 TI - Extinction of response to urine odor as a consequence of vomeronasal organ removal in male guinea pigs. AB - It has been found that removal of the vomeronasal chemoreceptor organ (VNO) in male guinea pigs disrupted investigatory responses to conspecific odors but this disruption was time-dependent; immediately following surgery, behavior appeared almost normal, whereas several months following surgery, animals became very unresponsive to conspecific odor. It was hypothesized that in the absence of a functional VNO, the main olfactory system (MOS) was capable of maintaining response to conspecific odor but that this response extinguished following repeated exposures. However, postsurgical change in the central nervous system, unrelated to exposure to the bioassay, remained a possible explanation. In order to separate these hypotheses, the VNO was surgically removed in two groups of animals (A and B), and a third group (C) experienced sham surgery. Beginning 3 weeks following surgery, males in Groups A and C were given two standard urine response tests/week for 24 weeks. Initiation of testing of Group B animals was delayed until Week 15 following surgery. Results indicated that (a) responses of Group A declined relative to those of Group C, (b) at the first postsurgical test, Group B was as responsive to urine as Group C and much more responsive than Group A and (c) a decline in responses for Group B occurred during tests after Week 15. The data therefore strongly supported the extinction hypothesis. The MOS is capable of eliciting a high level of investigatory behavior in response to female urine odors, but in the absence of the VNO, this response wanes, perhaps due to a loss of reinforcing properties associated with VNO stimulation. PMID- 3843312 TI - Olfactory discrimination in rats with anterior amygdala lesions. AB - In Experiment 1, rats with posterior lateral olfactory tract/anterior amygdala lesions or with control neocortical lesions were tested for retention of a preoperatively learned odor detection task and for learning on new odor discrimination problems. All rats had perfect or near-perfect retention of the detection task, and there were no discernible differences between groups in learning on the new odor discrimination problems. In Experiment 2, an intensity difference threshold for olfaction was determined in 4 rats before and after lesions of the posterior lateral olfactory tract and anterior amygdala. There were no apparent differences between pre- and postoperative performances on this psychophysical test. These results indicate that lateral olfactory tract projections to the amygdala and posterior olfactory cortex are not essential for normal performance on simple olfactory discrimination tasks. PMID- 3843313 TI - Odor-related bulbar EEG spatial pattern analysis during appetitive conditioning in rabbits. AB - Mildly thirsty rabbits were classically conditioned by reinforcement with water to give a discriminative licking response to the presentation of odors. The jaw movement component of the licking conditioned response (JM CR) was elicited only by the reinforced odor; an increase in the relative frequency of sniffing (RR CR) occurred to both reinforced (CS+) and nonreinforced (CS-) odors. Oscillatory electroencephalographic bursts of high-frequency (40-80 Hz) potentials were recorded epidurally from the lateral olfactory bulb with 64-electrode arrays (8 X 8, 3.5 X 3.5 mm) chronically implanted. Emphasis was on comparing bursts during odor presentation with bursts preceding odor arrival on each trial. A "detection" burst was characterized as occurring immediately after odor arrival and before the sniff response. "Discrimination" bursts occurred during the RR CR and before the JM CR onset. Significant air-odor burst differences (together with sniffing) occurred through up to six sessions for both CS+ and CS- odors for "discrimination" bursts but not for "detection" bursts. PMID- 3843314 TI - Cholinergic receptor blockade in the rat impairs locale but not taxon strategies for place navigation in a swimming pool. AB - Normal rats and rats drugged with atropine sulfate, a cholinergic muscarinic blocker, were evaluated in the Morris water task for their use of spatial navigation strategies. Atropine-treated rats were impaired on a place response of swimming to a platform hidden in a pool filled with opaque water. With extended training, they did learn the place response, though not with control precision, as shown by better than chance heading angles upon swim initiation, searches in the old location for a platform that had been moved, and by correct swims from novel starting locations. Acquisition could not be accounted for by habituation to the drug. In contrast with the acquisition deficit, pretrained rats were relatively unimpaired by the drug. In separate experiments, the strategies used by the drugged animals were examined. Atropine-treated rats were not impaired in acquisition or retention of a cue task, swimming to a visible platform, or a position response task, turning left to locate a platform, but both control and atropine-treated rats were unable to reverse position responses. Possibly, atropine-treated rats can use cue and position response strategies in part or in combination to acquire a place response. Atropine-treated rats were unable to acquire a place learning set, which involved swimming to a new location each day, a response that is eventually performed by normal rats in approximately one trial. They also were unable to perform a learning-set response, which they had acquired when undrugged. Insofar as the impairments following atropine are characteristic of a deficit in the use of a locale strategy, that is, making rapid use of relational properties of distal cues, whereas their successes are characteristic of the use of taxon strategies, that is, cue or position responses, the results suggest that locale systems of navigation are more importantly dependent on cholinergic brain mechanisms than taxon strategies. The resistance of preacquired place responses to atropine may suggest that normally rats acquire place responses by using a locale strategy but effect rehearsed responses by using taxon strategies. Finally, characteristic differences in acquisition, retention, and reversal of atropine-treated and control rats using different navigational strategies suggest new possibilities for interpreting various performance features displayed by animals after other types of treatment. PMID- 3843315 TI - Induced corneal swelling: an experimental model for investigation of collagen and interfibrillar substance relationships. AB - We report on the evolution of ultrastructural modifications in bovine and rabbit corneal sections after in vitro swelling. The number of stromal fibers decreases with time during swelling. The fact that swelling occurs more rapidly in the center of a lamellae than near the interlamellar spaces indicates that there is a heterogeneous distribution of interfibrillar matrix components and that corneal inhibition mechanisms vary according to the number of lamellaes. The appearance during swelling of periodic striations of collagen fibers and of an irregular network constituted of filaments and granules in the interfibrillar spaces suggests that corneal collagen fibers are covered by a pleated proteoglycan glycoportein substance that is unrolled during swelling. The filaments seem to be linked to collagen via dense granules located on fibers. The distance between the granules is 643 A. A definite correspondence between the distribution of these linking granules and the periodic striations of collagen cannot be determined. Other granules of undetermined chemical nature seem to link only filaments in the interfibrillar space. PMID- 3843316 TI - Fibronectin in alkali burns of the rabbit cornea. AB - Alkali burns of the cornea were made bilaterally in 16 albino rabbits. The eyes were then treated four times a day in a masked fashion with a solution either of fibronectin (250 micrograms/ml) plus gentamicin (1.5 mg/ml) or of gentamicin (1.5 mg/ml) plus hydroxypropyl methylcellulose (Tears Naturale). The eyes were examined daily in a masked manner for evidence of a corneal epithelial defect. On days 6-14, the fibronectin-treated eyes had more healed corneal defects (p less than 0.05, McNemar's test for matched pairs) than the control eyes. Fibronectin aided the healing of corneal alkali burns by decreasing the peeling back of the healing epithelium and by allowing re-epithelialization if peeling back had occurred. These properties of fibronectin helped to preserve a stable, intact corneal surface. PMID- 3843317 TI - Lactate levels in the rabbit cornea and aqueous humor subsequent to non-gas permeable contact lens wear. AB - The validity of using the aqueous humor lactate concentration as an indicator of corneal lactate production was tested. For this purpose, ten rabbits wore non-gas permeable contact lenses on one eye for 12 hours. Aqueous humor and corneal extracts were assayed for lactate by means of an enzymatic technique. The contact lens wear caused a limited increment in the corneal lactate concentration, but no change was recorded in the aqueous humor. We therefore conclude that the corneal lactate production has a negligible effect on the lactate concentration in aqueous humor. However, significant individual variations in lactate levels were recorded in the present study, as in earlier ones. Insufficient specificity in the currently used techniques for lactic acid concentration determination may in part explain this. PMID- 3843318 TI - Influence of cyclosporin A, dexamethasone, and benzalkonium chloride (BAK) on corneal epithelial wound healing in the rabbit and guinea pig eye. AB - Corneal erosions were produced by iodine vapor application in rabbit and guinea pig eyes. The corneal erosion of each eye was photographed four times daily after fluorescein staining and the erosion area measured planimetrically. Thirty-six percent of the corneal epithelium was destroyed in rabbits and 67% in guinea pigs. In guinea pigs, wound healing was delayed significantly by Spersadex, Totocortin, and benzalkonium chloride (BAK) 0.01% in the experimental eye. Spersadex also caused a significant delay in wound healing in the nontreated contralateral eye. Cyclosporin A 2% and Oculotect had no influence on epithelial wound healing. An 8-day pretreatment of guinea pig eyes with cyclosporin A or Spersadex had no further influence on the epithelial wound-healing rate. PMID- 3843319 TI - Fluorophotometric studies on postmortem changes in porcine corneal endothelial barrier functions. AB - Using an in vitro fluorophotometric technique, we studied the effect of postmortem storage duration on the endothelial barrier function of porcine corneas. A marked decay in endothelial barrier function was demonstrated that correlated with duration of storage. This decay appears to be nearly complete after 2 weeks of storage. This loss of barrier function correlated grossly with ultrastructural changes demonstrated on scanning electron microscopy. PMID- 3843321 TI - Serum immunoglobulins of women with precancerous and cancerous lesions of uterine cervix. PMID- 3843320 TI - Scanning electron microscopic study: the effect of balanced salt solution on rabbit corneal endothelium. AB - A serial study was carried out with the scanning electron microscope every 5 h to examine the endothelial alterations that occur when the rabbit cornea remains in the eye after enucleation. The findings are compared with those encountered when the cornea with a scleral rim was removed from the globe immediately after enucleation, immersed in Balanced Salt Solution, and observed at the same time intervals. Our results indicate that this procedure protects the corneal endothelium for at least 20 h. PMID- 3843322 TI - Electrocardiographic changes by thoracic irradiation. PMID- 3843323 TI - Serum protein bound fucose levels in hepatic malignancy. PMID- 3843324 TI - Avascular necrosis following combination chemotherapy. PMID- 3843325 TI - Studies with MPG against the side effects of cyclophosphamide (Endoxan)--a preliminary study. PMID- 3843326 TI - Microangiopathic haemolytic anaemia as a diagnostic clue to unsuspected malignancy in a young girl. PMID- 3843328 TI - A few characteristic features of the patients with psychosomatic skin disturbances: a projective study. PMID- 3843327 TI - Adjuvant chemotherapy with cyclophosphamide methotrexate and 5-fluorouracil (CMF) in stage II breast cancer in Indian patients. PMID- 3843329 TI - Systematised comedo naevus. PMID- 3843330 TI - Non-familial tuberous sclerosis. PMID- 3843331 TI - Dermatoglyphics in alopecia areata. PMID- 3843332 TI - Vitiligo and neurodermatitis circumscripta. PMID- 3843333 TI - A case of tuberculoid leprosy--following small pox vaccination. PMID- 3843334 TI - Trichogram studies of the scalp in pemphigus. PMID- 3843335 TI - Social, economic and behavioral determinants of utilisation of cataract surgery in mobile eye camps. PMID- 3843336 TI - A clinical study of filtering blebs. PMID- 3843337 TI - Aphakic malignant glaucoma. PMID- 3843338 TI - Bacterial and mycotic agents of corneal ulcers in Vellore. PMID- 3843339 TI - Efficacy of medrysone as anti-inflammatory agent. PMID- 3843341 TI - Correlation between intraocular pressure and biochemical changes in experimental glaucoma. PMID- 3843340 TI - Protein profile in the progressive experimental cataract (selenite model). PMID- 3843342 TI - Evaluation of effects of clofibrate, an antilipaemic agent on intraocular pressure in experimental glaucoma. PMID- 3843343 TI - Fibrous dysplasia of orbit. PMID- 3843344 TI - Sterile corneal perforation after cataract surgery in keratoconus posticus circumscriptus. PMID- 3843345 TI - Correlation between dark adaptation and refractive errors. PMID- 3843346 TI - Ophthalmoplegia cavernous sinus syndrome. Computed tomography study. PMID- 3843347 TI - The use of ultrasound jelly as gonioscopic fluid. PMID- 3843348 TI - [Levels of microbial contamination of frozen and quick-frozen shellfish products]. PMID- 3843349 TI - [Correlations between environmental contamination and microbiological quality of several milk-cheese products]. PMID- 3843350 TI - [Significance of urinary fluoride in the control of personnel exposed to occupational inhalation of halothane and enflurane]. PMID- 3843351 TI - [Type-B viral hepatitis: a disease to be diagnosed with more accuracy. Study on 100 male subjects within the population of the town of Terni]. PMID- 3843352 TI - Modulation of tumor associated antigen expression and shedding by recombinant human leukocyte and fibroblast interferons. PMID- 3843353 TI - Drugs inhibiting HMG-CoA reductase. PMID- 3843355 TI - [Clinico-morphological indices of patients with nonspecific ulcerative colitis who used an interferon ointment]. PMID- 3843354 TI - [Use of an interferon-containing ointment in treating suppurative-inflammatory processes]. PMID- 3843356 TI - [Etiotropic therapy with human leukocyte interferon of the affected nervous system in mumps]. PMID- 3843357 TI - [Use of human leukocyte interferon in treating patients with acute stenosing laryngotracheitis]. PMID- 3843358 TI - [Use of interferon in tuberculous eye diseases]. PMID- 3843359 TI - [Daily fluctuations of interferon induction in the blood leukocytes of children vaccinated with measles and mumps vaccines]. PMID- 3843360 TI - [Analysis of the effectiveness of the purification of human leukocyte alpha interferon on an immunosorbent made of serum polyclonal antibodies]. PMID- 3843361 TI - [Isolation of a hyperimmune rabbit antiserum to human leukocyte interferon]. PMID- 3843362 TI - [Results and prospects in the control of measles]. PMID- 3843363 TI - [Use of a micromethod in the leukocyte migration inhibition test for evaluating the status of cellular immunity in measles]. PMID- 3843364 TI - [Methodological approaches to the dynamic assessment of the epidemic process in measles during years of vaccine prevention]. PMID- 3843365 TI - [Foci of measles and the factors contributing to its occurrence]. PMID- 3843366 TI - [The HLA antigen system and the immune response in measles vaccination]. PMID- 3843367 TI - [Reactogenic and immunogenic properties of a live measles vaccine made from the Leningrad-16 strain administered via the upper respiratory tract]. PMID- 3843368 TI - [Epidemiological patterns of mumps infection today]. PMID- 3843369 TI - [Determination of the biological activity of the measles virus by plaque formation]. PMID- 3843370 TI - [Reactogenic properties of a combined mumps-measles vaccine]. PMID- 3843371 TI - Burn injury. PMID- 3843372 TI - Delayed lactate clearance in patients surviving circulatory shock. PMID- 3843373 TI - The role of radical surgery and post-operative radiotherapy in the management of intra-oral carcinoma. AB - The incidence rate for carcinoma of the tongue and floor of mouth has fallen in Scotland over the past 20 years (Fig. 1). Despite the fall in incidence rate and mortality rate many such tumours present late when the prognosis is poor (Pointon and Gleave, 1982; Decroix and Ghossein, 1981a; Shaw 1982). Until relatively recently most centres treated such lesions either by surgery or by radiotherapy alone. Over the past decade a number of centres have adopted a dual treatment policy involving both surgery and radiotherapy. The head and neck oncologists at the Royal Marsden advocate pre-operative radiotherapy (Shaw, 1982) while Glasgow and the Memorial in New York (Vikram et al., 1980) have adopted the practice of post-operative radiotherapy. A combined plastic surgery/radiotherapy clinic has been run in Glasgow for the past ten years and over that time a treatment protocol has evolved. The results of treatment of all advanced tumours of the tongue and floor of mouth referred to the Glasgow Institute of Radiotherapeutics and Oncology are presented here. The results of planned combined therapy-radical surgery followed by radical radiotherapy--are compared with the results of treating similar lesions by minimal surgery plus radical radiotherapy and the advantages of combined radical treatment are discussed. PMID- 3843374 TI - Brugia pahangi in the BALB/C mouse: a model for testing filaricidal compounds. AB - The BALB/C mouse infected with Brugia pahangi has been evaluated as a model for the selection of filaricidal compounds with activity against immature worms. Mice were infected by the intraperitoneal inoculation of 50 infective larvae and candidate compounds were administered by the intraperitoneal (i.p.), subcutaneous or oral route once daily from day 4 to day 8 post infection. Animals were examined on days 29 to 32 post infection. Variation in the larval recoveries from undrugged mice within and between experimental groups limited the value of drug assessments based upon percentage worm recoveries. The infection rate of undrugged mice was 85% over-all, range 60 to 100%. Using the infection rate of drugged v. undrugged animals as the criterion of activity the test has been evaluated with a series of standard nematicidal compounds. Levamisole and the benzimidazole carbamates, mebendazole, flubendazole and fenbendazole given i.p. at 10 mg/kg daily were active in this screen whilst DEC, DEC-N-oxide, ivermectin, amoscanate, metrifonate and suramin were inactive at the dosages tested. No retardation of growth or morphological abnormalities were observed in worms from the drugged mice. PMID- 3843375 TI - Monographs on human exposures to chemicals in the workplace. AB - The National Cancer Institute has contracted with Syracuse Research Corporation to produce monographs on the potential hazards of human exposure to approximately 70 chemicals used in the workplace. The monographs include detailed exposure data for specific job categories, as well as summaries of chemical and physical data, animal and human toxicological studies, short-term assays, and epidemiologic data. The information is useful for identifying suitable populations for epidemiologic research. PMID- 3843376 TI - Growth and sexual maturation in thalassemia. PMID- 3843377 TI - Brugia pahangi: labelling of secreted antigens with 35S-methionine in vitro. PMID- 3843378 TI - [Development of cardiac functions in boys]. PMID- 3843379 TI - [Characteristics of aerobic capacity in swimming and field groups]. PMID- 3843380 TI - Evaluation of resting and working postures from the viewpoint of local muscle energy metabolic rate. PMID- 3843381 TI - Constrained postures and the design of keyboard for VDT work. PMID- 3843382 TI - [Polysomnography and hypnotics]. PMID- 3843384 TI - [Sleep and bed-room environment--on the correlation between the seasonal changes in bed climate and sleep]. PMID- 3843383 TI - [Sleep, body temperature and energy metabolism]. PMID- 3843385 TI - [Sleep and respiration]. PMID- 3843386 TI - [Sleep and biorhythm in man]. PMID- 3843387 TI - [Shape of the children's leg]. PMID- 3843388 TI - [Function of the children's leg]. PMID- 3843390 TI - Autoimmunity: basic concepts; systemic and selected organ-specific diseases. PMID- 3843389 TI - [A variety of children's posture and gait]. PMID- 3843391 TI - Organ based autoimmune diseases. PMID- 3843392 TI - [A new treatment for old ulcers: parietal cell vagotomy]. PMID- 3843393 TI - [Complications of medical therapy in glaucoma]. PMID- 3843394 TI - [Transient ischemic attack as the sole manifestation of metastatic left atrial myxoma]. PMID- 3843395 TI - [Self-induced hypoglycemia: a factitious illness]. PMID- 3843396 TI - [Sensitivity testing of dermatophytes and yeasts to antimycotic drugs]. PMID- 3843397 TI - [Asthmatic-like syndrome due to neglected foreign body in the bronchial tree]. PMID- 3843398 TI - [Multiple foreign bodies in the airways]. PMID- 3843399 TI - [Brachial plexus block by the infraclavicular approach]. PMID- 3843400 TI - [Extended surgical procedure for malignant colo-jejunal fistula]. PMID- 3843401 TI - [Avulsion of the ischial tuberosity]. PMID- 3843402 TI - [Weil's disease with hemorrhagic pneumonitis due to Leptospira grippotyphosa]. PMID- 3843403 TI - [Organophosphate intoxication. Part II. The clinical symptoms and therapeutic principles]. PMID- 3843404 TI - [Congenital complete heart block and connective tissue disease in the mother]. PMID- 3843405 TI - [Lyme disease]. PMID- 3843406 TI - [Therapy of prevalent systemic mycoses]. PMID- 3843407 TI - Factor analysis in left ventricular first-pass radionuclide angiography: value of the ventricular factor to measure ejection fraction. AB - Factor analysis theoretically generates the time-activity curves of the various physiological compartments, or factors, which are superimposed in a dynamic series of scintigraphic frames. An image of the spatial distribution of each of these factors is also displayed. We tested the ability of one of these, the ventricular factor, to measure the left ventricular ejection fraction (LVEF) in first-pass radionuclide angiography (FPRA). Forty-nine patients divided into three groups were studied. In a group of 32 patients, factor analysis was compared to a conventional scintigraphic method and to contrast angiography. The coefficient of correlation was similar for both techniques (r = 0.83). To test reproducibility, another group of 10 patients received two successive injections of Au-195m, three minutes apart. The reproducibility of LVEF was r = 0.78 with factor analysis and r = 0.81 with the conventional method. In a third group of seven patients, three successive injections of Au-195m were performed in the right and in the left anterior oblique projections. The reproducibility of LVEF was r = 0.71 with factor analysis. However LVEF was significantly lower in LAO than in RAO, 50 +/- 11% vs 58 +/- 17% respectively. It is concluded that factor analysis does not offer a more reliable means of calculating LVEF than a conventional method. PMID- 3843408 TI - Evaluation of left atrial rhythm with pulsed Doppler echocardiography. AB - To evaluate the origin of ectopic atrial rhythms, the beginning of atrioventricular inflow due to left and right atrial ejection was estimated using the pulsed Doppler combined with two-dimensional echocardiography. In ten normal controls, the beginning of transtricuspid flow due to atrial ejection preceded that of transmitral by 0 to 40 msec with an average of 22 msec. In contrast, the beginning of right atrial ejection flow lagged behind that of left atrial by 40 to 80 msec in case 1 and by 20 to 50 msec in case 2 of ectopic atrial rhythm. The significant delay of atrioventricular inflow due to right atrial ejection in these two patients strongly suggests that the ectopic atrial rhythm is of left atrial origin. The pulsed Doppler echocardiography is considered to be a useful clinical tool for noninvasive evaluation of the left atrial rhythm. PMID- 3843409 TI - Effects of projection and background correction method upon calculation of right ventricular ejection fraction using first-pass radionuclide angiography. AB - There is no consensus as to the best projection or correction method for first pass radionuclide studies of the right ventricle. We assessed the effects of two commonly used projections, 30 degrees right anterior oblique and anterior posterior, on the calculation of right ventricular ejection fraction. In addition two background correction methods, planar background correction to account for scatter, and right atrial correction to account for right atrio-ventricular overlap were assessed. Two first-pass radionuclide angiograms were performed in 19 subjects, one in each projection, using gold-195m (half-life 30.5 seconds), and each study was analysed using the two methods of correction. Right ventricular ejection fraction was highest using the right anterior oblique projection with right atrial correction 35.6 +/- 12.5% (mean +/- SD), and lowest when using the anterior posterior projection with planar background correction 26.2 +/- 11% (p less than 0.001). The study design allowed assessment of the effects of correction method and projection independently. Correction method appeared to have relatively little effect on right ventricular ejection fraction. Using right atrial correction correlation coefficient (r) between projections was 0.92, and for planar background correction r = 0.76, both p less than 0.001. However, right ventricular ejection fraction was far more dependent upon projection. When the anterior-posterior projection was used calculated right ventricular ejection fraction was much more dependent on correction method (r = 0.65, p = not significant), than using the right anterior oblique projection (r = 0.85, p less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3843410 TI - Color-coded Doppler imaging of systolic flow patterns in hypertrophic cardiomyopathy. AB - We studied 11 patients with hypertrophic cardiomyopathy by color Doppler echocardiography (Group I: 6 patients with outflow obstruction, and Group II: 5 patients without outflow obstruction) to assess systolic structure and function as observed by cross-sectional echocardiography in relation to the flow dynamics. The structure and function included systolic anterior motion of mitral valve (SAM), midsystolic aortic valve closure (AoC), systolic cavity obliteration and the presence and timing of mitral incompetence. Their occurrence and timing was related to presence of aortic systolic flow and presence of turbulence. While all patients in Group I had SAM and turbulence, none of the patients in Group II had SAM nor turbulence. Early mitral incompetence appearing before SAM and turbulence, occurred in all patients of Group I and in none of Group II. Midsystolic aortic valve closure was only present in Group I and blood flow was unilaterally directed so that only 60% of aortic cross-sectional area showed blood flow. We conclude that mitral incompetence in hypertrophic cardiomyopathy in early systole is common when outflow gradient is present and is independent of mitral incompetence of mid- and late systole. During SAM, turbulence in the subaortic area and mid and late mitral incompetence occurred simultaneously. The midsystolic aortic valve closure was related to the unilaterally directed blood flow through the aortic cross-sectional area. PMID- 3843411 TI - Frontiers in thoracic imaging. PMID- 3843412 TI - Chest equalization radiography. AB - The conventional chest radiograph has a number of limitations as a diagnostic method of evaluating chest disease. The wide variation in attenuation between the lung and mediastinum frequently results in images with low contrast over the thicker portions. This, coupled with the presence of intense body-scattered radiation that must be adequately removed, makes chest radiography one of the most challenging diagnostic procedures in conventional radiography. Scanning equalization radiography (SER) is an alternative method of chest imaging that overcomes these limitations without employing other highly complex or expensive solutions such as digital imaging. Recent clinical studies have shown that diagnostic efficacy is improved with SER, and that SER offers the potential of significantly reducing the frequency of diagnostic errors and repeated examinations while producing cost savings. PMID- 3843413 TI - Current place of plain-film tomography in chest disease. AB - Plain-film tomography is a quick, accurate, and inexpensive procedure that is valuable for the evaluation of two common problems in chest radiology--the solitary pulmonary nodule and the hilus that is questionably abnormal. An accurate diagnosis can be made in most patients with a solitary pulmonary nodule so that appropriate management can be undertaken. If the diagnosis of an indeterminate nodule is made, further evaluation with computed tomography, transthoracic needle aspiration biopsy, surgery, or careful radiographic follow up can be suggested. Hilar tomography can determine whether the appearance of the hilus on the chest radiograph is due to prominent but normal vessels, an enlarged pulmonary artery, enlarged hilar lymph nodes, or a pulmonary mass. PMID- 3843414 TI - Computed tomography of the pulmonary parenchyma. Part 2: Interstitial disease. AB - A series of patients with documented predominantly interstitial pulmonary disease was examined by routine and high-resolution computed tomography (CT) and compared to a series of twenty-one normals. Inspiratory-expiratory lung density measurements were also obtained at predetermined levels. Several basic CT signs of interstitial disease were identified: finely irregular and thickened pleural surfaces; irregular vascular shadows; thickened and irregular bronchial walls making bronchi visible over a longer portion of their course in the lungs; reticular network of lines with three patterns easily distinguishable by the size of their reticular element; hazy patches of increased density of various sizes distinguishable from alveolar filling processes by the fact that vessels can still be visualized through them; and nodules of various sizes. Micronodules are often associated with a small or medium-size reticular network and in most cases seem to represent points of confluence rather than isolated nodules. The hematogenous origin of some nodules can be specifically suggested when feeding vessels are demonstrated on thin-section scans. Nodules associated with a large network of thickened septa are suggestive of lymphangitic carcinomatosis. Inspiratory-expiratory density gradients can be more useful in confirming the diagnosis of interstitial disease than absolute measurements. PMID- 3843415 TI - Energetic aspects of muscle contraction. PMID- 3843416 TI - Compared to what? PMID- 3843417 TI - Technetium 99m-labelled-sucralphate isotope scanning in the detection of peptic ulceration. AB - An isotope scan using sucralphate labelled with technetium-99m has been compared with barium meal in the detection of peptic ulceration in 18 patients with endoscopically proven upper gastrointestinal lesions and eight controls. Gastric (75%) and duodenal (67%) ulcers were detected with identical frequency by isotope scan and barium meal but both were inferior to endoscopy. Structural, non ulcerated lesions, were not identified by isotope scanning. The scan has potential value in duodenal ulcer disease, the serial assessment of ulcer healing and in paediatric gastroenterology. PMID- 3843418 TI - Unilateral pulmonary blood flow loss in a young patient. AB - A case of total unilateral loss of pulmonary perfusion with almost normal ventilation, in a 21-year-old male patient is described, and the problem of interpretation in an asymptomatic patient is illustrated. PMID- 3843419 TI - [Presence of volatile organic halogenated compounds in drinking water of the city of Rome: hygienic-sanitary aspects]. PMID- 3843420 TI - [Mineral waters: correlations between chemical characteristics listed on the label and those actually present]. PMID- 3843421 TI - [Basic derivatives of cholanes with antimicrobial activity. VII]. PMID- 3843423 TI - Variation in clinical practice in the management of febrile seizures. AB - Febrile seizures are a common problem facing those who provide health care to children. Wide variation in physician management of the simple febrile seizure has been reported. Recent published data have helped to clarify some of the diagnostic and therapeutic issues confronting the physician managing a child with this entity. In order to assess the current management of the child with a first simple febrile seizure, a questionnaire was sent to 584 physicians who care for children. Twenty-five percent of the respondents reported that they would use anticonvulsant therapy in a manner that has been shown to be ineffective. The responses showed that wide variation still exists in the management of febrile seizures. PMID- 3843422 TI - Detection of cancer in the pediatric emergency department. AB - We reviewed the Tumor Registry for 1981 at the Children's Hospital of Philadelphia to identify all the children with newly diagnosed cancer who were seen initially in the emergency department (ED). Of the 220 new patients listed, 16 (7.3%) sought initial care in the ED (1 per 4,500 ED visits). Seven had leukemia, five had non-CNS solid tumors (2 lymphoreticular, 1 Wilms', 1 neuroblastoma, and 1 ovarian), and four had CNS tumors. Among the children with leukemia, pallor (6) and decreased activity (4) were the most common complaints. Duration of symptoms ranged from 4 days to 3 weeks. Physical examination showed pallor (5), splenomegaly (4), fever (3), hepatomegaly (3), lymphadenopathy (3), and ecchymoses or petechiae (2). The complete blood count and peripheral smears were all abnormal. The five patients with non-CNS solid tumors had symptoms related to the location of their neoplasms. The patients with Wilms' tumor, neuroblastoma, and ovarian dysgerminoma had abdominal masses; the patient with lymphoma had a large, painful inguinal node; and the patient with histiocytosis X had an infiltrative rash, gingivitis, and pneumonitis. Of the four children with CNS tumors, three had headache, and one had an incidentally detected scotoma following head trauma. All four eventually had abnormal neurologic exams and computer tomographic scans, but two were discharged initially with psychiatric diagnoses. We conclude that cancer, although rare in children, occurs with greater relative frequency in the referral hospital ED than that predicted by published cancer rates from the referring hospital's ED.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3843424 TI - Abdominal mass in the neonate. PMID- 3843425 TI - Child homicide: emergency department recognition. AB - Homicide is escalating as a cause of sudden death in childhood. With the ever rising rate of child abuse in the United States, the emergency physician is increasingly likely to encounter cases of attempted homicide. In order to improve survival in such cases, the emergency department (ED) staff must be alert to the subtle signs and symptoms of this form of trauma and be prepared to institute life-saving therapy. We reviewed 12 cases of child homicide seen in our ED between 1981 and 1983 and summarized the findings on these unfortunate children. The typical victim was a young child in the second half of the first year or in the second year of life. The most common forms of fatal injury were CNS injury and abdominal trauma. In both types of injuries, there were often subtle findings on external physical examination. It was important for the physician to have a high index of suspicion based on a protean chief complaint, a lack of preceding history of illness, the time of presentation to the ED, and more subtle physical findings such as minor skin bruising, retinal hemorrhage, and distended abdomen. A low hematocrit was also suggestive of traumatic cause for the child's critical state. In addition, autopsy findings for the 12 patients are presented. PMID- 3843426 TI - Syncope associated with indwelling Hickman catheter. PMID- 3843427 TI - Severe cardiac dysrhythmia from barium acetate ingestion. AB - A 15-year-old girl presented with a severe cardiac dysrhythmia after having ingested an unknown chemical. Lidocaine therapy improved the dysrhythmia. Other clinical findings included arterial hypertension, vomiting, paresthesias, muscle weakness, and severe hypokalemia (1.8 mmol/L). Analysis of a portion of the noningested chemical and the finding of 130 mg/L of barium in the urine confirmed the identity of the ingestant. Barium poisoning is rare. Its presentation as a life-threatening cardiac dysrhythmia is previously unreported. PMID- 3843428 TI - Abdominal trauma in children: role of computed tomography. PMID- 3843429 TI - Evaluating infusion devices: Part I: Facing the issues. AB - The evaluation of infusion devices for use throughout a hospital can be a complicated and difficult process. An evaluation strategy should be established carefully at the start of the process, with well-defined steps progressing through completion. A complete, accurate evaluation may produce significant resource saving, as well as ultimately enhancing the level of patient care. Part II will address the evaluation of specific infusion pumps. PMID- 3843430 TI - The cause of gait disturbance in 425 pediatric patients. AB - Children who seek attention for painful or painless alteration of gait provide a challenge to the emergency department physician who confronts such cases. Children with acute onset of limp or refusal to walk may become the center of diagnostic and therapeutic concern in approximately 4 percent of pediatric patient encounters. The spectrum of diagnoses found in both the outpatient and inpatient populations is extensive. Among the diverse afflictions that can cause nontraumatic altered locomotion in children, infectious diseases predominate. This finding influences a liberal admission policy for patients with altered gait who may have historical, physical, or laboratory features suggestive of an infectious disease. PMID- 3843431 TI - The telephone in pediatric emergency medicine. PMID- 3843432 TI - Human bites in children. AB - We studied 40 children aged four months to 18 years seen in the Emergency Department (ED) to determine the spectrum of human bites and the incidence of infection in treated and untreated wounds. Initial data concerning time elapsed until a physician examined the bite, site and size of the bite, whether the bite was infected when first seen, and whether antibiotics were prescribed, were obtained from the ED chart. Follow-up by phone or mail was available on 33 of the 40 children. The incidence of human bites was one in 600 visits. The commonest lesion was a superficial abrasion of the face, inflicted by another child. Twenty nine of the 33 bites were uninfected when first seen; 13 of them received no antibiotics; and 16 received oral antibiotics. There was no significant difference in mean age, sex, site, or type of wound between these two groups. None of 13 untreated and one of 16 treated children developed an infection (P = NS). Four patients had infected wounds when first seen; three received oral antibiotics; and one was admitted for intravenous antibiotics. Of the three on oral antibiotics, two were subsequently admitted to the hospital. Conclusions. We came to the following conclusions at the end of the study. (1) The majority of human bites in children are superficial and do not become infected. (2) Antibiotics do not appear to be useful in prophylaxis for minor bite wounds seen shortly after injury. (3) Follow-up is necessary for all bite wounds, since serious infection may develop, or an established, seemingly minor infection may worsen. PMID- 3843433 TI - Incidence of serious infection in infants under age two months with fever. AB - Infants less than eight weeks of age in a busy urban emergency department were prospectively reviewed during a six-month period, from October 1, 1981 to March 31, 1982. An axillary temperature of 37.8 degrees C or higher was arbitrarily defined as significantly elevated. A total of 1,655 young infants were seen during this time period, with 122 having temperatures of 37.8 degrees C or higher (7%). Four percent of the febrile patients were bacteremic. The degree of temperature elevation was not proportional to the severity of the illness. Total white blood cell count was less than 4,000/mm3 in two of the bacteremic patients. Cerebrospinal fluid pleocytosis was present in 13% of the patients undergoing lumbar puncture. PMID- 3843434 TI - Use of the emergency department by children enrolled in a primary care clinic. AB - Two thousand forty-four emergency department (ED) visits were made during a one year period by 714 children enrolled in a primary care clinic. Eight hundred one (39.2%) visits were for urgent or emergent conditions, and 579 (28.3%) were for presenting complaints suggestive of urgent or emergent conditions, including 65 based on parental concern. Six hundred sixty-four (32.5%) visits might have been considered medically inappropriate using criteria specifically developed for this study. These criteria were developed as a standard which might be used for future studies on ED use by children. Children without medical assistance and those over 12 months of age were more likely to be consistently appropriate users. Appropriateness of use was not associated with the patient's race, sex, distance of home from the hospital, telephone availability, length of clinic enrollment, type of primary provider, or chronic disease other than asthma. Further, medical assistance recipients were more likely to make three or more inappropriate visits than were the other groups. PMID- 3843435 TI - Fatal child abuse: a two-decade review. AB - The purpose of the present study was to identify demographic variables and medical causes of death associated with child deaths, secondary to abuse, at one pediatric hospital. Abuse and neglect reporting forms, social service records, and autopsy reports were reviewed. A total of 72 known deaths occurred between 1965 and 1984. The majority of children were under two years of age, and the most common cause of death was head trauma. Less than one half of the children who died presented to the emergency department with visible signs of injury. Male abusers outnumbered females; boyfriends of the victims' mothers were the most frequent perpetrators. Emergency department personnel should have a high index of suspicion about abuse in cases of inadequately explained conditions in children. All cases of children who die unexpectedly, or from inadequately explained conditions, should be referred to the coroner, and autopsies should be performed. PMID- 3843436 TI - Understanding how mothers conceive of their children's illness: a key to doctor patient communication. AB - In many ways, parents are the true consumers of their children's health care. How parents understand the cause, presentation, and treatment of their child's illness strongly affects doctor-patient communication, compliance in treatment, and follow-up. To better understand and enhance compliance, we have studied mothers' concepts of illness using Piaget's stages of cognitive development. Fifty-nine mothers who brought their children to the emergency department (ED) of a large urban children's hospital were asked, "How does a child get a cold," and "What makes a cold go away?" We directly transcribed answers and compiled information on maternal education, employment status, method of payment for health care, and number of children in the family. Forty-four percent of mothers had a prelogical conceptualization of illness, and only 17% had a formal-logical conceptualization. Only employment in the health care fields correlated with maternal conceptual levels regarding childhood illness. Physicians need to take care to communicate with the parent at her level of conceptualization to ensure understanding. PMID- 3843438 TI - Pulmonary hemorrhage in a one-month-old child. PMID- 3843437 TI - Lipoid pneumonia secondary to baby oil aspiration: a case report and review of the literature. AB - Baby oil is a common household product that is frequently used when there are infants or toddlers in the house. However, it is often overlooked as a potential source of danger to these youngsters. In 1983, 36,700 cases of ingestion were reported to the poisoning surveillance and epidemiology branch of the Food and Drug Administration. Topical preparations used in the care of infants accounted for 480 of the cases. Ten percent of these required hospitalization. In 36 cases, the product ingested was baby oil. This figure does not include baby lotions and other skin products with a mineral oil base. Aspiration of mineral oil, the main component of baby oil, has been described as a cause of lipoid pneumonia and oleomas. However, there is very little information in the modern literature concerning acute lipoid pneumonitis in children. We herein present a patient with lipoid pneumonia caused by aspirated baby oil, who followed a severe clinical course. The paucity of information regarding this subject points to the need for increased public and physician awareness of the problem and for their direct participation in the prevention of this potentially fatal condition. PMID- 3843439 TI - Eosinophilic granuloma of the appendix. AB - The emergency physician is frequently frustrated by the symptom of recurrent abdominal pain. This complaint is particularly troubling when the patient localizes the pain to the right lower quadrant. On an isolated visit, acute appendicitis is the condition which demands primary consideration, because of both its frequency and the consequences of failure to make a prompt diagnosis. When right lower quadrant abdominal pain is recognized as being recurrent, the emergency department physician must consider a broader range of diagnostic possibilities. This illustrative case presents one unusual element of the differential diagnosis of this symptom. PMID- 3843440 TI - Esophageal duplication in children: a report of three cases evaluated by computed tomography. AB - Primary tumors of the esophagus are extremely rare in children. A common periesophageal mass in children is duplication. It constitutes only 0.5 to 2.5% of all esophageal lesions usually diagnosed in infancy or early childhood. Duplication of the esophagus may be diagnosed on examination by the emergency department (ED) physician when it produces symptoms or when it is inadvertently found on a chest radiograph. The duplication may produce acute gastrointestinal symptoms such as vomiting and dysphagia or respiratory symptoms such as cough, wheezing, or dyspnea. Currently the examination of choice for evaluation of esophageal duplication is a barium swallow. However, computed tomography (CT) has the advantage over conventional diagnostic procedures, since it demonstrates the cystic nature of the mass and its relationship to adjacent structures in a noninvasive manner. An esophageal duplication has a well-marginated spherical mass contiguous with the esophagus, with preserved surrounding fat planes, and numbers of 15 to 30 Hausenfield units (HU) on CT. We are reporting three cases of this anomaly as demonstrated by CT. PMID- 3843441 TI - Infant mortality in Hong Kong. PMID- 3843442 TI - Public knowledge of bowel cancer and views on screening with the haemoccult test. PMID- 3843443 TI - Alternative methods of BCG vaccination. PMID- 3843444 TI - Industrial disasters. PMID- 3843445 TI - Report of the feasibility study of a postal enquiry into the pattern of illnesses before and after immunization of infants. PMID- 3843446 TI - Interventions to improve uptake of rubella immunization. PMID- 3843447 TI - Clinical psychologists in general practice: data and observations. PMID- 3843448 TI - Using accident injury data to assess the impact of community first aid training. PMID- 3843449 TI - Cortisol changes in depression. PMID- 3843450 TI - Plasma free cortisol in depressive illness--a review of findings and clinical implications. AB - Measurements of a variety of parameters of biologically active cortisol indicate that a small number of patients with depressive illness have significantly elevated levels of unbound plasma cortisol. Abnormalities in corticosteroid binding globulin do not account for the hypercortisolemia, and elevated urinary levels of free cortisol confirm the data obtained for plasma free cortisol. Direct measurements of free cortisol suggest that the absence of physical effects of cortisol in patients with depression is related to the very mild elevation in plasma levels of free cortisol in these patients and that high levels are not sustained throughout the day as they are in patients with pathologic glucocorticoid excess. The apparent discrepancy between elevated total cortisol levels and the mild elevation of unbound plasma cortisol is best explained by the generous binding capacity of corticosteroid binding globulin. Total cortisol levels of greater than 25 micrograms/dl are necessary to saturate the binding sites of corticosteroid binding globulin. Only then can free cortisol be detected in plasma. Although these studies suggest that unbound plasma cortisol is elevated, whether these levels represent biologically active cortisol in other tissue sites as well, particularly the central nervous system, is still unclear. It is well accepted that discrete binding sites for cortisol and dexamethasone occur in hypothalamic and pituitary tissue, but the mechanism of glucocorticoid regulation of these binding sites has not been elucidated. Cortisol levels in cerebrospinal fluid correspond closely to plasma levels of unbound cortisol. Ruf and Steiner have shown that corticosteroid responsive neurons are present in the periventricular gray matter of the third ventricle, where other investigators have identified active ependymal transport mechanisms for cortisol.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3843451 TI - CSF cortisol in affective illness. AB - The few studies reported to date suggest that CSF cortisol is increased in depression and mania compared to normal subjects but that this increase is not specific to these disorders, since increased levels occur in other psychiatric and neurologic disorders. The CSF elevation is probably secondary to cortisol changes in the blood, but CSF levels appear to be more stable. The diurnal change in CSF may also be greater than that in blood. The significant correlation between CSF and blood levels observed in monkeys has not been found in humans. Future studies must control for time of day, as well as diagnostic factors, and ideally should include other measures of cortisol function, such as urinary excretion or the DST. Regulation of CSF cortisol is not well understood, and its relationship to other brain chemistries is unclear. PMID- 3843452 TI - Circannual rhythm and peak frequency of corticosteroid excretion: relationship to affective disorder. AB - A circannual rhythm of corticosteroid excretion has been identified in healthy subjects but is lost in patients who have recovered from a depression associated with dexamethasone nonsuppression. The loss of circannual variation as well as the persistent elevation and increased peak frequency of cortisol excretion could be instrumental in the development of depressive symptoms. A model for this phenomenon can be found in the entity known as intermittent Cushing's disease. That hypercortisolemia could be etiologically related to depression is supported by the case reported here in which a rise in UFC preceded the emergence of psychiatric symptomatology on two occasions. Further investigation into this possibility is clearly warranted. PMID- 3843453 TI - Cortisol secretion during sleep in patients with a severe depressive illness. PMID- 3843454 TI - Cortisol changes in depression: part 2. PMID- 3843455 TI - [Serum LDH and myeloma. Correlation with the degree of bone marrow infiltration]. AB - The authors study the serum lactate dehydrogenase (LDH) activity in multiple myeloma patients in relation to survival, plasma cells bone marrow infiltration, and creatinine and paraprotein serum values. Twenty five patients seen between 1979 and 1983 were studied considering two groups, one with LDH values higher than 100 IU/1 and the other with LDH values lower than 100 IU/1. Patients having more than 100 IU/1 showed a more marked bone marrow infiltration. Paraprotein concentration was higher in patients having less than 100 IU/1. No correlation was observed for the other factors considered. PMID- 3843456 TI - Inhibition of tumor growth and leukocyte alterations in splenectomized mice treated with a PCj3 polysaccharide. AB - The effect of a polysaccharide (PCj3), isolated from the ascomycete "Cyttaria johowii" was studied on the growth of the ascitic Sarcoma 180 (S180) inoculated subcutaneously in BALB/c mice which had been previously splenectomized. The leukocyte alterations in peripheral blood were analyzed simultaneously, and the percentage of cells with C3b receptors in the population of peritoneal cavity was evaluated through the E (IgM)C rosette technique. A significant inhibition of tumor growth was observed in the splenectomized mice treated with PCj3 with respect to the untreated splenectomized and to the control group, which had not been splenectomized. It was also found that the first group acquired relative resistance to the later inocula of the ascitic S180 via i.p. On the day 8 after the tumor inoculation a marked lymphocytosis increased up to 224% in PCj3 treated mice and only to 59% in untreated splenectomized mice. The increase in the controls, that had not been splenectomized was 18%. With regard to the number of neutrophils a significant difference was found between both splenectomized groups on the 8 day, corresponding the highest values to the group treated with PCj3. No differences were observed on the 25 day even though the neutrophilia was maintained. The percentage of cells with C3b receptors in population of peritoneal cavity was significantly lower in mice treated with PCj3, although an increase in the number of E (IgM)C attached per cell and ingestion of system were observed. PMID- 3843457 TI - [Design of new antineoplastic drugs]. AB - The theoretical design of new anticancerous drugs is considered into the general frame of the theoretical pharmacology. In this aim, two limit cases are taken into account: those of drugs with well known and unknown mechanism of action. The methods used presently in drug design are reviewed, emphasis is put on the molecular mechanics procedures. Two examples of calculations are given: the first deals with some alkylating agents the mechanism of action of which is well known. The second one deals with immunologic agents, such as human interleukin-2, the study of which is carried out by theoretical and experimental fragment analysis of the polypeptide. It is concluded that the theory may be an useful tool for solving the cancer problem. PMID- 3843458 TI - [Residual tumor mass and other kinetic parameters of clinical relevance in cancer of the breast]. AB - Based on data about illness-free survival obtained studying a group of 192 patients affected by breast cancer, we have made some calculations about tumoral growth kinetics, using the theoretical presumptions of the exponential model. Tumoral recurrence in the different stages (S-I = 35%, S-II = 38%, S-III = 53% y S-IV = 72%) were valued. Also the theoretical mean time of tumoral relapse was determined for each clinical stage of the illness (S-I = 4.6 years, S-II = 2.6 years, S-III = 1.9 years and S-IV = 1.2 years). Knowledge of these relapse time values makes it finally possible to value the residual tumoral mass after treating the primary in each clinical stage under study (S-I = 1.2 X 10(6) cells, S-II = 8.1 X 10(7) cells, S-III = 3.6 X 10(8) cells and E-IV = 1.6 X 10(9) cells). Comparison of the theoretical data obtained with the corresponding clinical data (real appearance time of relapses, percentage of patients of each Stage that have metastasis, etc.) shows that the formulations and theoretical concepts used, describe, with a certain degree of preciseness, the ordinary clinical observations phenomena that characterize the evolutive course of the breast carcinoma. PMID- 3843459 TI - [In vitro combination of mercaptopurine and human serum albumin]. AB - Through the use of the fluorescence absorbance technique, the parameters that define the association between the antineoplastic drug mercaptopurine and human serum albumin were determined for a concentration range for the ligand between 6 X 10(-5) and 10(-7) moles/L, keeping the concentration of the macromolecule fixed at 0.5 X 10(-6) moles/l. Given the structure of the macromolecule under study and the experimental conditions used, we established an association model with two different kinds of binding sites. PMID- 3843460 TI - [CEA and TPA in cancer of the breast. Findings and criteria of use]. AB - In breast cancer, under rigorous and normalized conditions, the blood levels of carcinoembryonic antigen (CEA) and tissue polypeptide antigen (TPA) allow us: to differentiate with enough precision, in treated patients, the presence of tumour (EP) from illness-free situation (NED); to alert about the appearance of metastases and/or local relapse in patients put under systematic postoperative evolutional control; to evaluate the systemic palliative treatment response in patients with metastatic breast cancer and to formulate, in this case, prognostic predictions. Blood levels of CEA and TPA are, otherwise, unsuitable: to detect with accuracy the primary tumour presence; to warn about the risk of subclinical tumour existence (in treated patients in NED situation); to predict, in this last case, the chemotherapeutic treatment response, and to prevent about local relapses development. The independent but combined use of both antigens, appreciably raises the diagnostic success percentage with regard to that obtained when only one tumour marker was used. PMID- 3843461 TI - [Serum levels of sialoglycoproteins soluble in perchloric acid in rats with Yoshida's sarcoma]. AB - We have studied the levels of sialo-glycoprotein in the serum of Yoshida sarcoma bearing rats, with the aim of exploring its possible value as a tumour marker and the influence upon it of non-neoplastic factors. PMID- 3843462 TI - [Botryoid sarcoma of the vagina. Presentation of a case surviving 10 years]. AB - A case of sarcoma botryoides of the vagina in a 15-month old child with a survival of ten years is described. The authors review the clinical and histological characteristics of the neoplasm and the different therapeutic measures employed. They conclude that a multidisciplinary treatment is needed, consisting of surgical removal, combined radiotherapy with intracavitary radium and cobalt 60, and antineoplastic multidrug chemotherapy. PMID- 3843463 TI - [Benign tumors of the esophagus. Esophageal leiomyoma]. AB - Benign neoplasms of the esophagus are rare. The most frequent symptom (75% of the cases) is dysphagia, and a very rare one is dyspnea. When a benign tumor of the esophagus is suspected, a radiological examination is made and the diagnosis confirmed by fibro-esophagoscopy and biopsy. The authors make a summarized review of the benign tumors of the esophagus, and describe a case of esophageal leiomyoma. PMID- 3843464 TI - [Indications for radiotherapy in cancer of the pancreas]. AB - Radiotherapy of pancreas is usually difficult because of the vicinity of important organs (stomach, small bowel, liver and kidneys) that may result damaged. However, the use of new T.A.C. procedures and the better employment of precision high energy radiotherapy permit the application of a valuable procedure in about fifty per cent of the cases to relieve the pain usually associated to pancreatic carcinoma. The procedure followed at the Radiotherapy Service of the "Hospital General. Ntra. Sra. de la Esperanza", in Barcelona is detailed, making a review of the experience from 1973-1985. Radiotherapy was always associated to chemotherapy. PMID- 3843465 TI - [Global prognosis and stage classification of colorectal carcinoma]. AB - A study on the life prognosis of patients with carcinoma of the colon and rectum is made. 393 patients are studied, 90% of which were followed up during five years or until their death. The authors indicate the classification of stages they have followed with good correlation results, and without overlapping of the survival calculations for the different subgroups. PMID- 3843466 TI - [Radiological study of carcinoma of the lung in stage III]. AB - A radiologic study of 50 patients with stadium III lung cancer is made. The main radiologic signs were an opacity indicating a mass (100%), hilar widening (70%), mediastinal widening (40%), atelectasis 40% and pneumonitis (34%). The most common histologic diagnosis found was that of squamous carcinoma (38%). PMID- 3843467 TI - [Biological markers in cancer of the ovary]. AB - The organism produces substances whose presence or amount indicate the existence of a neoplastic process, called biological tumor markers. They can be used in the clinical laboratory for diagnostic purposes, and also to orient about the evolution of the tumoral mass. There are about 90 tumor markers, 33 of them have studied in relation to cancer of the ovary, that are described in this work. Eight of them are the most important: CSAp, OCA, OCAA, IAP, Nagao's isoenzyme, hCG/hCG beta, hPL, and AFP. PMID- 3843469 TI - Adolescent growth and development: update. PMID- 3843468 TI - Young people and their health needs. A global perspective. PMID- 3843470 TI - Growth at adolescence. Clinical correlates. AB - Several highly significant changes occur within a relatively short period of time during adolescence. Great alteration in physique, developmental progress in thinking, and psychologic gains toward attaining ego identity take place but not always synchronously. Attention is paid to physical changes because they are visible and are of intense concern to adolescents, but physicians and other professionals should remember cognitive and psychosocial growth are affected by physical growth, and vice versa. Often there is a temporary disequilibrium in the relationship of these three areas of growth, and this can affect one or another part of the developmental pattern. It is therefore necessary to remind ourselves of the diversity of adolescent growth, and of adolescents, when caring for a young patient and be cognizant of growth in areas other than physical. More and more children with congenital or acquired handicaps are living to become adolescents and perhaps adults. Handicaps can be limited to one of the three major areas of growth or involve them all in varying degrees. For example, sickle cell disease, Crohn's disease, or ulcerative colitis may postpone physical growth for a significant period; this lack of pubertal change can affect psychosocial development but usually does not impair cognitive growth. Mental retardation may have no apparent effect on physical growth but can handicap the adolescent's psychosocial development. Growth still occurs in a sequential pattern but often it seems that handicapped youngsters reach a developmental milestone by a series of "detours." Physicians must recognize these lags or differences and try to facilitate progress, promote self-esteem, and provide understanding. Much can be done with anticipatory guidance. Adolescence often provides the opportunity to overcome past damage or, in some instances, to start anew on a more optimal program for physical and psychosocial growth. Young adolescent boys and girls usually look to the physician for factual information and guidance; they long for understanding by an adult outside of the family. If we can successfully fill their expectations, adolescents will be the better for it. PMID- 3843471 TI - Cognitive development in adolescence. Clinical cues and implication. PMID- 3843472 TI - Psychosocial aspects of adolescent medicine. PMID- 3843473 TI - The family context of adolescence. PMID- 3843474 TI - Adolescent nutrition. PMID- 3843475 TI - Delayed puberty and short stature. PMID- 3843476 TI - Interviewing and physical examination of adolescents. PMID- 3843477 TI - The practitioner and adolescent medicine. PMID- 3843478 TI - Developing ambulatory and in-patient services for adolescents. AB - Adolescents require specialized health care because of their unique developmental needs. The medical or surgical treatment of a disorder may be straightforward and little different from that of a child or adult; but, because of cognitive, physical, and psychosocial stages of development, consideration of these attributes assumes great importance if optimal results are to be achieved. Establishing outpatient and inpatient facilities for adolescents requires meticulous planning and continuing commitment, careful selection of professional staff, elimination of barriers to health care, respect for privacy and confidentiality, and knowledge of laws affecting consent for care. Teenagers are often unsure of themselves, have difficulty relating to adults, and their actions often belie their true feelings. It is necessary to establish rapport and trust with patients and other professionals. PMID- 3843479 TI - Normal adolescent sexuality. A physician's perspective. PMID- 3843480 TI - Homosexuality in adolescence. PMID- 3843481 TI - Religion and adolescent sexuality. AB - The health professional can be helpful to the adolescent, the adolescent's family, and the community through participating in and initiating local sex education programs. Religious settings provide a great potential for sexuality education within a value framework. A helpful curriculum will include the meaning of sexuality; developing a positive concept of sexuality, and a healthy sexual identity; present the issues of adolescent sexuality, including the various health issues; and an understanding of quality relationships within the family and among peers. If health professions and the community religious institutions can joint together, they can reach the goals of most programs in human sexuality, namely, "learning to appreciate our sexuality as a positive potential for self expression, fulfillment and intimacy; respect for the personhood and well-being of others; and responsible decision-making." PMID- 3843482 TI - Adolescence in perspective: a lifespan approach to sexuality education. PMID- 3843483 TI - Sex education and the adolescent. Perspectives from a sex educator. PMID- 3843484 TI - Normal childhood and early adolescent sexuality. A psychologist's perspective. PMID- 3843485 TI - Adolescent sexuality: Part One. PMID- 3843486 TI - Adolescents at risk for drug and alcohol abuse. AB - Although all children have the potential for becoming destructively involved with psychoactive drugs, there is considerable evidence that youngsters with particular kinds of psychologic and family problems are at high risk for chemical dependency. These include youngsters with developmental deficiencies that interfere with their capacity to master the environment. Children with a strong family history of alcoholism or drug abuse also seem to be at high risk. Obviously, there is some overlap between these two groups, not only because parental drug abuse and alcoholism may damage the fetus, but because chemically dependent parents are more likely to abuse or neglect their children because of the impact of their own illness on their functioning as parents. In addition, families in which drug use is modeled as a typical behavior are more likely to produce adolescents who use drugs, although rigid rules against drug use are relatively ineffective in preventing adolescents from experimenting with drugs. Finally, certain behavior patterns in young childhood--particularly severe aggressiveness, rebelliousness, and learning problems at school--seem to be correlated with the development of chemical dependency during adolescence. PMID- 3843487 TI - The toxic adolescent: substance and alcohol abuse. PMID- 3843488 TI - Etiology of alcoholism: a new theoretic mosaic. PMID- 3843489 TI - Identification and management of the toxic adolescent. AB - Experimentation with alcohol and drugs is prevalent in adolescence. The clinical caring for older children, adolescents, and young adults must include substance misuse or abuse whenever behavioral, family, or related medical problems occur. A systematic approach using checklist and questionnaires, a directed physical examination, selected laboratory testing, and a 3-visit (or more) evaluation protocol will provide the clinician with the opportunity to assess patients and provide both them and their families with appropriate referrals. Most if not all clinicians seeing adolescents have these patients in their practices. Making the diagnosis is a result of recognition of symptoms and signs, evaluation, and appropriate referrals. The foregoing discussion should provide one approach to patient management that can result in the retrieval of a substantial number of our youth from an alcohol and drug-dominant lifestyle with its irreversible medical, social, and emotional residue. PMID- 3843490 TI - Acute management of common illicit drug intoxications. PMID- 3843491 TI - Ambulatory management of adolescent alcohol and drug abuse. AB - The foregoing description of program concept forms the philosophic basis for our ambulatory management of adolescents alcohol and drug abuse. The malleability of the adolescent and young adult is an advantage in helping him to adapt to a treatment program that is structured, consistent, and fair. The possibility of alternatives within that framework allows significant chances for success, thereby changing a negative lifestyle to one that meets the needs of the individual as required by his environment. PMID- 3843492 TI - Inpatient treatment of adolescent alcohol and polydrug abusers. PMID- 3843493 TI - Drugs to enhance athletic performance in the adolescent. AB - Why would any athlete expose himself to these pharmacologic agents? The most obvious answer is to improve performance. Since athletic performance is composed of so many variables, for example, attitude, diligence in training, strength, agility, and the competitive spirit, it is difficult to ascribe improvement in performance to any particular agent. It may be due to the placebo effect or to better or more efficient training, to say nothing about the effects of the normal maturational process. Certainly the peer pressure of others using these agents weighs heavily upon the adolescent's mind. Might peers have a competitive advantage? All of these points would be moot if it were not for the ready availability of many of these compounds. All are within reach of the athlete with a little knowledge of this subculture, and all are relatively inexpensive (with the exception of GH). They can be as tempting to adolescents as are brightly colored packages of household cleaners, vitamins, or flavored children's aspirin tablets to toddlers. Continuing with this analogy, one notes that most of the time children easily recover from accidental ingestions, but these instances, just as with drugs of adolescent and adult abuse, can be deadly. PMID- 3843494 TI - Advances in health risk assessment for systemic toxicants and chemical mixtures. An international symposium. PMID- 3843495 TI - Advances in health risk assessment for systemic toxicants and chemical mixtures. Introductory remarks. PMID- 3843496 TI - Risk assessment extrapolations and physiological modeling. AB - The process of assessing the risk associated with human exposure to environmental chemicals inevitably relies on a number of assumptions, estimates and rationalizations. One of the more challenging aspects of risk assessment involves the need to extrapolate beyond the range of conditions used in experimental animal studies to predict anticipated human risks. The most obvious extrapolation required is that from the tested animal species to humans; but others are also generally required, including extrapolating from high dose to low dose, from one route of exposure to another and from one exposure timeframe to another. Several avenues are available for attempting these extrapolations, ranging from the assumption of strict correspondence of dose to the use of statistical correlations. One promising alternative for conducting more scientifically sound extrapolations is that of using physiologically based pharmacokinetic models that contain sufficient biological detail to allow pharmacokinetic behavior to be predicted for widely different exposure scenarios. In recent years, successful physiological models have been developed for a variety of volatile and nonvolatile chemicals, and their ability to perform the extrapolations needed in risk assessment has been demonstrated. Techniques for determining the necessary biochemical parameters are readily available, and the computational requirements are now within the scope of even a personal computer. In addition to providing a sound framework for extrapolation, the predictive power of a physiologically based pharmacokinetic model makes it a useful tool for more reliable dose selection before beginning large-scale studies, as well as for the retrospective analysis of experimental results. PMID- 3843497 TI - Implications for risk assessment of host factors causing large pharmacokinetic variations. AB - Normal human subjects vary widely in their capacity to eliminate many drugs and environmental chemicals. These variations range in magnitude from fourfold to fortyfold depending on the drug and the population studied. Pharmacogenetics deals with only one of many host factors responsible for these large pharmacokinetic differences. Age, sex, diet and exposure to other drugs and chemicals, including oral contraceptives, ethanol and cigarette smoking, can alter the genetically determined rate at which a particular subject eliminates drugs and environmental chemicals. These elimination rates, therefore, are dynamic and change even in the same subject with time and condition. Regulatory legislation has only recently begun to recognize this very broad spectrum of human susceptibility and the existence of multiple special subgroups of particularly sensitive subjects. In setting standards for environmental chemicals, EPA and NIOSH have attempted to protect the most sensitive humans and should be encouraged to continue this policy. For some drugs and environmental chemicals, the commonly used safety factor of 100 may be too low; for these chemicals large, interindividual pharmacokinetic variations produced by pharmacogenetic and other host factors may make a safety factor of 400 or 500 more adequate. PMID- 3843498 TI - Methods for route-to-route extrapolation of dose. AB - Results of acute toxicity studies for a variety of chemicals have indicated that, in most cases, although the inhalation route was more effective than the IG route, wide variations in toxicity occurred between these two routes. The major factors that may result in variations in toxicity between routes include: differences in absorption efficiency; differences in systemic effects; occurrence of critical toxicological effects at the portal of entry; first-pass effects resulting in inactivation or activation of the chemical agent before it reaches the target organ; and variations in temporal patterns of target organ concentrations. Extrapolation to determine safe exposure levels during chronic exposure becomes less reliable, not only as information relating to these factors decreases, but also as the quality or length of exposure decreases in the available toxicologic studies. VDC is an example of one of a few chemicals for which both chronic inhalation and oral toxicity data are available, along with detailed pharmacokinetic information. On the basis of the pharmacokinetic data, differences in toxicity between the two routes did not appear to be very likely for this chemical. This conjecture was supported by the results of chronic toxicity studies. Finally, assuming sufficient data and pharmacokinetic parameters are available, this paper presents a useful and practical approach to route extrapolation. PMID- 3843499 TI - Ranking chemicals based on chronic toxicity data. AB - During the past 3 years, EPA's ECAO/Cincinnati has developed a method to rank chemicals based on chronic toxicity data. This ranking system reflects two primary attributes of every chemical: the minimum effective dose and the type of effect elicited at that dose. The purpose for developing this chronic toxicity ranking system was to provide the EPA with the technical background required to adjust the RQs of hazardous substances designated in Section 101(14) of CERCLA or "Superfund." This approach may have applications to other areas of interest to the EPA and other regulatory agencies where ranking of chemicals based on chronic toxicity is desired. PMID- 3843500 TI - Development of a comparative potency method for cancer risk assessment of complex mixtures using short-term in vivo and in vitro bioassays. AB - A comparative potency method for cancer risk assessment has been developed based on a constant relative potency hypothesis. This method was developed and tested using data from a battery of short-term mutagenesis bioassays, animal tumorigenicity data and human lung cancer risk estimations. This data base was developed for a series of complex mixtures including emissions from coke ovens, roofing tar pots, cigarette smoke and automotive engines. The series of automobiles used in this study included both diesel- and gasoline-powered vehicles. The assumptions inherent in this method are discussed, together with the methods and data base used to test these assumptions. PMID- 3843501 TI - A standardized benchmark approach to the use of cancer epidemiology data for risk assessment. AB - Clarity and scientific validity are two criteria for assessing the quality of communications between scientists and risk managers. Regulating permissible exposures on the basis of very-low-dose risk extrapolation uses scientific information that may not meet either criterion. With regard to clarity, it is difficult for an individual to conceive of the meaning of risks on the order of 1 in 1,000,000 lifetime excess. With regard to scientific validity, the uncertainties of extrapolating risks at very low doses are evident in the wide variation in results produced depending on the statistical and pharmacokinetic assumptions made. An alternative approach is to fix benchmarks from which safety factors are chosen (Gaylor, 1983). For epidemiological data, we propose a benchmark of that exposure which would cause 1% cancer excess with 10 yr of exposure followed by 30 yr of further followup. These values have been chosen at this stage of development since they are close to observable values in many cancer epidemiology studies. In the first stage, excess cancer risk versus duration of exposure is plotted and the excess risk is estimated for a exposure duration of 10 yr. The next step involves a short linear extrapolation from the exposure levels linked with this excess risk to the exposure levels that would cause a 1% excess risk over a duration of 10 yr. We have established preliminary benchmarks from published data for benzene and radon daughter exposure. Permissable exposure levels might then be set by deciding on safety factors.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3843502 TI - Permissible concentrations of chemicals in air and water derived from RTECS entries: a "rash" chemical scoring system. AB - Many chemicals are of concern to human health, but only a few have epidemiologically derived risk estimates. About 45,000 chemicals are listed in RTECS, most of which have had some testing in subhuman models. RTECS entries range from cellular effects through organoleptic damage to lethality, with many pathological endpoints listed, including mutagenic changes, irritation, teratogenesis, cancer, mortality, etc. However, it is difficult to extend any biological test results to human risk assessments. If the results are extended, the degree of validity is highly uncertain. This paper describes a logical basis for using the entire complex spectrum of test results to evaluate the overall toxicological potency of a chemical to be assayed (i.e., an interviewing chemical) and describes how to derive tentative, permissible concentrations in air and water for any particular chemical for which no regulatory guidance exists. This approach has been tested for 16 reference chemicals discussed in NIOSH Criteria Documents, EPA-CAG reports, etc. The evaluations are uncomplicated, but occasionally it is difficult to match RTECS entries for two different chemicals. Difficult comparisons may require some familiarity with experimental design and the toxicological literature. One important product of this novel approach is that a distribution or array of potency values is obtained for any chemical evaluated. This distribution reflects many uncertainties stemming from low statistical power, experimental design, pharmacological processes, interspecies variability, dose rate, biological effect monitored, route of treatment, etc. The array of relative values for a particular chemical reflects many different biological and physical conditions. The distribution of the array helps to index a composite toxicological profile for many different biological effects resulting from numerous treatment protocols. To minimize the effect of extreme sensitivity of certain (perhaps novel) biological test models, possible errors in the RTECS data-base, and possible human pharmacological insensitivity to a particular chemical and/or a particular route of administration, we consider the interquartile range (i.e., the central 50%) of the array of relative potency values between two chemicals being compared as a practical measure of uncertainty. Thus, the range in response derived from variability in relative potency should be useful in addressing the range of response in man as estimated from extrapolations of test data. PMID- 3843503 TI - Novel methods for the estimation of acceptable daily intake. AB - This paper describes two general methods for estimating ADIs that circumvent some of the limitations inherent in current approaches. The first method is based on a graphic presentation of toxicity data and is also shown to be useful for estimating acceptable intakes for durations of toxicant exposure other than the entire lifetime. The second method uses dose-response or dose-effect data to calculate lower CLs on the dose rate associated with specified response or effect levels. These approaches should lead to firmer, better established ADIs through increased use of the entire spectrum of toxicity data. PMID- 3843504 TI - Health hazard assessment for chlorinated dioxins and dibenzofurans other than 2, 3, 7, 8-TCDD. AB - EPA is faced with the need to perform health risk assessments of environmental materials containing mixtures of chlorinated dioxins and -dibenzofurans. Preferably, such an assessment must be based on the direct evaluation of chronic health effects of the mixture or on a knowledge of the toxic effects of each of the components. In the absence of such data, the authors have developed two pragmatic approaches that can reasonably be applied to mixtures such as flyash or contaminated soil. The details of these approaches, viewed as interim procedures, are compared and contrasted with those used by other regulatory and public health authorities. PMID- 3843505 TI - Structure-activity considerations in risk assessment: a simulation study. AB - The use of quantitative structure-activity relationships (QSAR) is considered with respect to estimating the carcinogenic risk of untested chemicals. SAR derived from a retrospective classification of a series of aromatic amines were used to study the estimation of carcinogenic risk by analogy. Using pattern recognition methods, a series of molecular descriptors were developed for a data set of aromatic amines that supported a linear discriminant function capable of separating compounds testing positively for carcinogenicity from those testing negatively. Linear discriminant analysis correctly categorized the compounds as positive or negative in 94.9% of the cases. For each aromatic amine within the subset of positive compounds, the most appropriate analogue was identified using physicochemical, topological, geometric and electronic molecular descriptors as variables. An upper-limit unit risk estimate was calculated for each compound that was a positive carcinogen within the data set using the linearized multistage model. The actual risk and the risk estimated by analogy to a congener were compared for each compound within the positive subset. The results support estimating both qualitative and quantitative carcinogenic risk by analogy for this particular data set. PMID- 3843506 TI - Development of an acceptable factor to estimate chronic end points from acute toxicity data. AB - Acceptable daily intake (ADI) values are routinely developed for threshold toxicants from NOAELs determined from human or animal chronic or subchronic data. These NOAELs are then divided by appropriate uncertainty factors ranging from 10 to 1000 depending on the quality of the data. However, for the vast majority of chemicals used industrially, adequate toxicity data needed to use this process are not available. Thus, a procedure to estimate a chronic toxicity endpoint from acute toxicity data, such as an oral rat LD50, becomes necessary. An acute-to chronic application factor of 0.0001 was developed, which when multiplied by an oral LD50 for an individual chemical, yields a surrogate chronic NOAEL. This figure can then be used to estimate an acceptable daily exposure for humans. The process used to estimate this application factor is detailed. PMID- 3843507 TI - Issues on health risk assessment at hazardous waste sites and resource recovery facilities in Region II. AB - This paper examines the issues involved in health risk assessments at hazardous waste sites and resource recovery facilities in Region II and emphasizes the programmatic aspects of the problem and the integration of risk assessment into the permitting process for these facilities. Suggestions for the R&D agenda and policy needs to support a risk assessment strategy in this area are also discussed. PMID- 3843508 TI - A multi-route exposure assessment of chemically contaminated drinking water. AB - This report provides an example of how a single source of contamination could potentially contribute to all routes of exposure. A modeling approach was used to estimate multiple exposure routes in an attempt to assess the health significance of gasoline-contaminated drinking water supplies. This model consisted of a two compartment, indoor air quality equation that calculates the contribution made by ambient and indoor air contaminated by a pollutant volatilized from drinking water to that pollutant's inhalation burden. In addition, the model uses the traditional equations for assessing a pollutant's oral and dermal burdens. Benzene, toluene and xylene were used as surrogates for gasoline contamination to determine the contribution of contaminated water to adult and child body burdens from indoor air, oral (drinking water and food) and dermal exposure routes. The contribution thus calculated for each chemical was compared to the EPA's Office of Drinking Water Health Advisories. In terms of acute exposure, the use of chemically contaminated water for showering purposes may generate vapor in the confined area of the bathroom at levels sufficient to cause or contribute to mucous tissue irritation, as commonly reported in affected homes. High temperatures and humidity may also contribute to these effects, especially in the bathroom. In terms of chronic exposure, the use of chemically contaminated water at EPA-recommended guideline amounts in an affected home may result in inhalation, oral and dermal exposures leading to cumulative doses exceeding adult and child total daily body burdens based on EPA's Health Advisories. Thus, this model indicates that the traditional standard/guidelines derivation processes should be reevaluated to consider the pollutant contribution from multiple routes of exposure. The New Jersey Departments of Health and Environmental Protection conducted a study in which concentrations of several pollutants including benzene in the breathing zone were measured during a 15-minute shower in homes with contaminated water. The findings suggest that the air quality model used in the present study may satisfactorily predict the airborne concentrations of pollutants in, at least, the bathroom after showering with contaminated water (Pearson rank correlation coefficient of 0.773 with p = 0.0012 for n = 14). The findings of the present study support the use of an adjustment factor for all exposure durations to account for exposures to other sources of the contaminant, i.e., urban, occupational, and food. A value of 20% seems appropriate based on the study's findings.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3843509 TI - Risk assessment for fetal toxicity. AB - This paper reviews the problem of performing risk assessments using data on fetal toxic effects. It briefly discusses the usual dose-response models and their inappropriateness for application to such data. The paper then considers tests for determining whether the fetal toxic effect is increased over that of the control group. Assuming an increase has been shown, the use of a fetal toxicity, dose-response model for risk assessment is discussed. The paper then applies these methods to data from an experiment using female mice mated with irradiated males. Finally, the paper discusses the need for further statistical research in this important area. PMID- 3843510 TI - Mouse liver tumor data: assessment of carcinogenic activity. AB - Significant numbers of chemicals have been shown to be carcinogenic in mouse liver although they do not exhibit carcinogenic activity in other organs or tissues of mice or rats. This review focuses on the reasons for the unique susceptibility of the mouse liver to these carcinogens and the extent to which the carcinogenic activity of a chemical in mouse liver can be used to predict carcinogenicity in humans. Many of these mouse liver carcinogens lack genotoxic activity and, as such, have been proposed to be tumor promoters. Two mechanisms that may explain the action of nongenotoxic carcinogens in mouse liver are reviewed. These are: direct action on precursor cancer cells, either to accelerate their growth or to prevent their death and the selective growth advantage, resulting from regenerative hyperplasia of precursor cancer cells in response to the necrosis of normal cells produced by hepatotoxins. Estimating human health risks on the basis of mouse liver tumor data is believed to differ for nongenotoxic and genotoxic carcinogens in two fundamental ways. The first involves intraspecies extrapolation and the second involves low-dose extrapolation. In conclusion, although mouse liver tumor data are seen to be of value in estimating human health hazard, it is important to distinguish between genotoxic and nongenotoxic mechanisms in applying such data. Further study of the biochemical and molecular mechanisms of chemical carcinogens is necessary to determine the relationship between their activity in mouse liver and their activity in humans. PMID- 3843511 TI - A statistical model for species extrapolation using categorical response data. AB - Predictions of human health risk for single chemicals are often based on animal studies and hence require some sort of adjustment for species differences in toxic susceptibility. In the past, either the animal dose has been divided by an uncertainty factor or the dose has been transformed by a mathematical model into a human equivalent dose. A generalization of the allometric model previously used for carcinogens, the so-called "surface area model," is investigated here for use with graded severity response data for noncarcinogenic systemic toxicity. Statistical methods for estimating one of the model's parameters, the power of body weight, are proposed and tested on simulated and actual toxicity data. Early results indicate reasonable accuracy if data are available for a large number of dose groups. PMID- 3843512 TI - Improving the use of epidemiologic data in health risk assessment. AB - Epidemiologic data with quantitative exposure measures is infrequently available for specific environmental agents. This lack of exposure measures creates confusion in interpreting epidemiologic data and therefore has impeded its efficient use in health risk analysis. This paper discusses screening and evaluating epidemiologic studies for use in assessing health risk. It also describes the larger role of epidemiology in reducing uncertainties in risk analysis. The approach recognizes that the various designs used to increase statistical power and to control for covariables have different functions in contemporary risk assessment as practiced by regulatory agencies. Each of these study designs is categorized for its role in risk analysis as useful for hazard identification or for dose-response assessment. Studies presenting geographic correlations are construed to be not directly useful in health risk assessment. The numerical level of the exposure data is a deciding factor in using valid epidemiologic studies. However, data measured on an ordinal scale can be used in qualitative assessments and can demonstrate the strength of the relationship. The application of this procedure is illustrated using epidemiologic studies on the carcinogenicity of chemicals contaminated with dioxins. PMID- 3843513 TI - New risk assessment initiatives in EPA. AB - This paper describes EPA's recent efforts to ensure consistency and technical competence of the agency's risk assessments. These include five risk assessment guidelines proposed in November 1984 and January 1985 and establishment of a Risk Assessment Forum. The technical provisions of the five guidelines have been outlined. PMID- 3843514 TI - Assessing the power and quality of epidemiologic studies of asbestos-exposed populations. AB - This paper briefly discusses criteria for evaluating epidemiologic studies for risk assessment purposes, using asbestos as an example. Asbestos is one of the few carcinogens for which substantial data exist on exposures to humans. However, there are major difficulties in using these data for conducting risk assessments. In particular, exposure data are often incomplete, and risk assessments usually involve extrapolating from the higher exposures of the occupational environments to the lower levels typically encountered in the nonoccupational environment. The term "asbestos" refers to the fibrous form of several minerals, and levels of exposures to these fibers are not easily assessed. Criteria for evaluating epidemiologic studies used in an Ontario Royal Commission report on asbestos are discussed. The importance of considering the statistical power of studies to detect an excess risk is examined using as examples major cohort studies of asbestos-exposed workers, as summarized in a report by the U.S. National Research Council. PMID- 3843515 TI - [Effect of sex on brainstem auditory evoked potentials]. PMID- 3843516 TI - [Spontaneous nystagmus in albinos: morphological study]. PMID- 3843518 TI - [Development of the ethmoid in the human fetus]. PMID- 3843517 TI - [Meniere's disease and temporal pneumatization]. PMID- 3843519 TI - [Vertical fronto-lateral laryngectomy in cordo-commissural tumors]. PMID- 3843520 TI - [Peri-tracheostomal recurrences following total laryngectomy]. PMID- 3843521 TI - [Lipid-bound sialic acid: a biological indicator of laryngeal neoplasia]. PMID- 3843522 TI - [Hormone receptors in normal and pathological salivary glands. Preliminary results]. PMID- 3843523 TI - [Mixed nasal glioma: clinico-statistical contribution]. PMID- 3843524 TI - Tissue reactivity in the rat following administration of Actinomyces viscosus in Freund's adjuvant. PMID- 3843525 TI - Transport and intracellular metabolism of the complexes of cortisol asialotranscortin in the liver. PMID- 3843526 TI - A specific laboratory test for the diagnosis of primary depression. A review results. PMID- 3843527 TI - Experimental choice of plastic for bioactive intrauterine contraception. PMID- 3843528 TI - New aspects in diagnosis and therapy of septic shock. PMID- 3843529 TI - Legg Calve Perthes disease: a comparison of long-term and short-term follow-up results of non-containment treatment. PMID- 3843530 TI - Incidence of orthodontic anomalies in school children in Prague 10. PMID- 3843531 TI - The effect of two N-acetylcysteine containing drugs on the ultrastructure of the tracheal epithelium in rabbits. PMID- 3843532 TI - Spectroscopic studies of the interactions of coenzymes and coenzyme fragments with pig heart, oxidized triphosphopyridine nucleotide specific isocitrate dehydrogenase. AB - Spectroscopic, ultrafiltration, and kinetic studies have been used to characterize interactions of reduced and oxidized triphosphopyridine nucleotides (TPNH and TPN), 2'-phosphoadenosine 5'-diphosphoribose (Rib-P2-Ado-P), and adenosine 2',5'-bisphosphate [Ado(2',5')P2] with with TPN-specific isocitrate dehydrogenase. Close similarity of the UV difference spectra and of the protein fluorescence changes accompanying the formation of the binary complexes provides evidence for the binding of these nucleotides to the same site on the enzyme. From the pH dependence of the dissociation constants for TPNH binding to TPN specific isocitrate dehydrogenase in the absence and in the presence of Mn2+, over the pH range 5.8-7.6, it has been demonstrated that the nucleotide binds to the enzyme in its unprotonated, metal-free form. The involvement of positively charged residues, protonated over the pH range studied, has been postulated. One TPNH binding site per enzyme subunit has been measured by fluorescence and difference absorption titrations. A dramatic effect of ionic strength on binding has been demonstrated: about a 1000-fold decrease in the dissociation constant for TPNH has been observed at pH 7.6 upon decreasing ionic strength from 0.336 (Kd = 1.2 +/- 0.2 microM) to 0.036 M (Kd = 0.4 +/- 0.1 nM) in the presence and in the absence of 100 mM Na2SO4, respectively. Weak competition of sulfate ions for the nucleotide binding site has been observed (KI = 57 +/- 3 mM). The binding of TPN in the presence of 100 mM Na2SO4 at pH 7.6 is about 100-fold weaker (Kd = 110 +/- 22 microM) than the binding of the reduced coenzyme and is similarly affected by ionic strength. These results demonstrate the importance of electrostatic interactions in the binding of the coenzyme to TPN-specific isocitrate dehydrogenase. The large enhancement of protein fluorescence caused by binding of TPN and Rib-P2-Ado-P (delta Fmax = 50%) and of Ado(2',5')P2 (delta Fmax = 41%) has been ascribed to a local conformational change of the enzyme. An apparent stoichiometry of 0.5 nucleotide binding site per peptide chain was determined for TPN, Rib-P2-Ado-P, and Ado(2',5')P2 from fluorescence titrations, in contrast to one binding site per enzyme subunit determined from UV difference spectral titration and ultrafiltration experiments. Thus, the binding of one molecule of the nucleotide per dimeric enzyme molecule is responsible for the total increase in protein fluorescence, while binding to the second subunit does not cause further change.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3843534 TI - [Correlation of coronary cineangiographic, surgical and anatomopathological findings in patients subjected to myocardial revascularization]. PMID- 3843533 TI - Compact state of a protein molecule with pronounced small-scale mobility: bovine alpha-lactalbumin. AB - We describe a novel physical state of a protein molecule which is nearly as compact as the native state and has pronounced secondary structure, but differs from the native state by the large increase of thermal fluctuations (in particular, by the large mobility of side groups). This state has been characterized in detail for the acid form of bovine alpha-lactalbumin as a result of the study of physical properties of this state by a large variety of different methods (hydrodynamics, diffuse X-ray scattering, circular dichroism and infrared spectra, polarization of the luminescence, proton magnetic resonance, deuterium exchange and microcalorimetry). It has been shown that bovine alpha-lactalbumin can be transformed into a similar state by thermal denaturation. This process is thermodynamically two state (i.e. all-or-none transition), which means that this state differs from the native one by a phase transition of the first order. PMID- 3843536 TI - Multiple-choice examinations. A disaster for medical education. PMID- 3843535 TI - Worldwide trends in funding for contraceptive research and evaluation. PMID- 3843537 TI - Diminished ability to interpret and report internal states after bilateral medial temporal resection: case H.M. AB - These experiments centered around H.M., a 54-year-old man who became amnesic 27 years ago after a bilateral resection in the medial temporal lobe region for epilepsy. In order to document the clinical reports that he rarely comments on such internal states as pain, hunger, and thirst, his thermal pain perception was examined in relation to his other somatosensory capacities, and his reports of hunger and thirst were assessed before and after meals. In order to investigate the effect of limited memory ability on the reporting of internal states, H.M.'s performance was compared with that of 5 other subjects with global amnesia. The results provided evidence that H.M.'s information about internal states is less available or less accessible than normal and that his impairment is not attributable to his well-documented memory deficit. Instead, it is believed that the bilateral resection of the amygdala accounts for H.M.'s poor appreciation of his internal states. PMID- 3843538 TI - An age comparison of the rates of acquisition and forgetting of spatial information in relation to long-term enhancement of hippocampal synapses. AB - Age differences in the rates of acquisition and forgetting of a spatial memory problem were compared with corresponding differences in the rates of increase and decay of long-term synaptic enhancement (LTE) of hippocampal synapses, induced by high-frequency stimulation of perforant path fibers. Old animals approached their final asymptotic performance levels more slowly than did the young animals and exhibited faster rates of forgetting of the problem. Similarly, LTE reached its maximum more slowly in the old animals and decayed more quickly. Although the absolute rates of behavioral acquisition and forgetting were different from the corresponding rates of increase and decay of LTE, the relative differences between age groups were rather similar. This was particularly true for the comparison of forgetting with LTE decay. The relation of these data to the hypothesis that LTE underlies spatial learning and memory is discussed. PMID- 3843539 TI - Central cholinergic involvement in working memory: effects of scopolamine on continuous nonmatching and discrimination performance in the rat. AB - Rats were trained to stable baselines of lever pressing on a variable intertrial interval continuous nonmatching to sample schedule (CNM) or on an analogous discrimination schedule. Scopolamine reduced accuracy of CNM performance to a similar extent over the three intertrial (retention) intervals: 2.5, 5, and 10 s, results indicating that the drug did not affect the time-dependent process of retention in working memory. When baseline levels of performance accuracy were similar in the CNM and discrimination tasks (but stimulus discriminability was greater in the CNM task), scopolamine reduced accuracy equally in the two procedures. Effects of scopolamine on accuracy of noncorrection trial CNM performance were simulated by reducing stimulus discriminability; however, scopolamine disrupted CNM correction trial performance much more than did reductions in stimulus discriminability. It is concluded that scopolamine's effects on working memory are not limited to possible effects on stimulus discrimination: Scopolamine may also affect retrieval of response rules from reference memory. PMID- 3843540 TI - Response-reinforcer associations after caudate-putamen lesions in the rat: spatial discrimination and overshadowing-potentiation effects in instrumental learning. AB - Experiment 1 demonstrated that rats with caudate-putamen lesions show an impairment in the acquisition and reversal of a spatial maze task when compared with unoperated control subjects. Experiment 2 examined lever-press responding supported by a variable interval schedule in three groups of subjects: a group with caudate-putamen lesions, a group with lesions of the posterior cortex, and an unoperated control group. The presentation of a 0.5-s, response-contingent light correlated with reinforcement generated an elevated response rate in the two operated groups but tended to suppress responding in the control group, perhaps by overshadowing the response-reinforcer relation. Only the group with cortical lesions maintained the elevated rate when the light was uncorrelated with food delivery. Experiment 3 confirmed for these same subjects that caudate putamen lesions produce a spatial learning deficit. No deficit was seen in the posterior cortex group. It is suggested that caudate-putamen lesions disrupt the mechanism underlying the response-reinforcer association upon which spatial maze learning and free operant responding in part depend. PMID- 3843541 TI - Dissociation of autonomic and behavioral components of conditioned fear during development in the rat. AB - Classical conditioning of heart rate (HR) was examined in unrestrained preweanling and weanling (16-, 19-, 21-, 25-, and 28-day-old) rats, with tone and light as the conditioned stimuli (CS) and electric shock as the unconditioned stimulus. The conditioned cardiac response was a sustained deceleration in HR which did not emerge until Day 21 for the tone CS and until Day 28 for the light CS. In contrast, when suppression of a behavioral response (running in a straight alley for dry suckling as reward) was used as the index of conditioning, the suppressive effects of the CS were evident around Day 16 for the tone and around Day 19 for the light. These findings indicate that during ontogenesis (a) the behavioral and autonomic responses to the same conditioned stimulus do not develop at the same pace, (b) the emergence of conditioned responses to tone and light stimuli parallel the sequential order in which the relevant sensory modalities achieve maturity (first audition, next vision), and (c) there is no clear-cut interdependence between development of the HR orienting response and conditionability of HR because unconditioned cardiac deceleration to both auditory and visual stimuli first appears about Day 16 in the developing rat, well before conditioned HR responses can be established to either stimulus. PMID- 3843542 TI - Greater task difficulty amplifies the facilitatory effect of des-glycinamide arginine vasopressin on appetitively motivated learning. AB - Rats were trained in a discrete-trial forward autoshaping paradigm to touch an extended lever to earn food pellets. Reinforcement was delivered either simultaneously with or 6 s after lever retraction which occurred either non contingently after 15 s or when the animal touched the lever. Treatment with des glycinamide arginine vasopressin (DGAVP; 15 micrograms/kg, sc) 1 hr before sessions increased the rate of acquisition of the extended-lever-touch response and also facilitated development of intertrial (adjunctive) nose poking. Effects of the peptide were more robust in the more difficult, delayed reinforcement task. DGAVP lacks the classical peripheral activity of vasopressin. In both experiments, peptide treatment was terminated before asymptotic levels of performance were attained; the continued facilitation of acquisition in treated groups suggests a specific enhancement of learning and/or enhanced memory retrieval. PMID- 3843543 TI - Previous experience disrupts atropine-induced stereotyped "trapping" in rats. AB - Three experiments were conducted to investigate the phenomenon of atropine induced stereotypic trapping in rats reported by Schallert, De Ryck, and Teitelbaum (1980). The first two showed that such trapping was disrupted by previous experience with the specific trapping task or the test context alone. The third showed that, in response to the test context, specific behaviors were altered in rats experienced with the context. Inexperienced atropine-treated animals moved slowly and showed a strong thigmotaxis to surfaces with the body and particularly the snout. The hindquarters did not cooperate well with the movements of the forequarters. In contrast, atropine-treated animals familiar with the context moved with medium-speed, coordinated movements, were independent of surface contact with body and snout, and the hindquarters cooperated fully with forequarter movements. These reactions of drugged animals were exaggerated forms of those of undrugged animals to the unfamiliar and familiar context, respectively. Thus, atropine enhances the reactions of the rat to both a novel and a familiar environment. The enhanced reactions to a novel environment appear as stereotyped behaviors that trap the animal in particular configurations of surfaces. The enhanced reactions to a familiar environment abolish the stereotypic trapping normally produced by atropine. This pattern of results indicates that it is not atropine per se that leads to trapping. Rather, stereotypic trapping develops as a consequence of an interaction between the adaptive responses of the rat to a novel environment and atropine. PMID- 3843544 TI - Differential effects of lesions in three limbic areas on ultrasound production and lordosis by female hamsters. AB - Ultrasound production and lordosis were examined in ovariectomized, hormone primed female hamsters before and after sham operations or bilateral electrolytic lesions in the lateral septum/bed nucleus, corticomedial amygdala, or lateral habenula. During 2-min exposures to synthetic ultrasounds and 1-min exposures to stimulus males, females with corticomedial amygdala lesions exhibited reduced ultrasound rates and lordosis durations. Following lesions in the lateral septum/bed nucleus, females showed significant increases in ultrasound rates with no pre- to postoperative change in lordosis. Ablations of the lateral habenula had no effect on calling but were associated with shorter lordosis durations. These results demonstrate that two reproductive behaviors, ultrasound production and lordosis, are differentially affected, depending on lesion placement within the limbic system. In turn, these differences demonstrate that the neural mechanisms for two elements of a single major class of behavior can be quite distinct, both in terms of the likelihood that particular brain areas will be involved and in the nature of their involvement. PMID- 3843545 TI - Role of anorexia and behavioral activation in amphetamine-induced suppression of feeding: implications for understanding tolerance. AB - In order to gain further insight into the mechanism of contingent tolerance to amphetamine anorexia (Carlton & Wolgin, 1971), an attempt was made to determine the role of anorexia and behavioral activation (increased locomotion and/or stereotypy) in the initial suppression of feeding produced by the drug. Rats administered chronic injections of either saline or amphetamine (2 or 4 mg/kg) were given milk either directly into the mouth through an intraoral cannula or in a standard drinking tube. It was reasoned that although drug-induced anorexia would affect intake with both methods of feeding to the same degree, the disruptive effect of behavioral activation would be greater in bottle-fed rats. The results revealed that bottle-fed rats given amphetamine showed substantially greater suppression of intake than cannula-fed rats. Saline-treated rats showed almost identical milk intake with the two methods. Recovery of intake occurred in all drugged rats except those given 4 mg/kg and fed by bottle. In the tolerant groups, rats fed by bottle and given 2 mg/kg recovered at a faster rate than cannula-fed rats at either dose. These results demonstrate that in the normal drinking condition, the initial suppression of intake is caused by a combination of anorexia and behavioral interference and that tolerance occurs to both of these effects. PMID- 3843546 TI - Circadian rhythms in food intake and activity in domestic cats. AB - Daily patterns of food intake and activity were determined for normal cats and cats with pontile lesions. Food intake in the dark and in the light of LD (light/dark) cycles were determined separately by weighing the food, and a "percentage nocturnal" score was calculated. The measure of activity was infrared photobeam interruptions, with the photobeam placed in front of the cages, over the food bowl. No differences between normal cats and cats with pontile lesions were detected for any of the measures. Food intake of cats was influenced by simulated starlight and moonlight conditions and by the presence of humans. Cats in isolation from humans and human noises exhibited random patterns of activity in constant light and free-running circadian rhythms in constant dark. Idiosyncratic differences in entrainment to LD cycles were found among cats, and the relevance of this variability is noted for studies of photoperiodic phenomena in this species. PMID- 3843547 TI - Feeding rate and responses to food deprivation as a function of fasting-induced hypoglycemia. AB - The relation between hypoglycemia induced by 3 hr of food removal at various times throughout the day and the amount eaten during the corresponding ad-lib periods was examined in rats. It was found that the 3-hr-deprivation fall in blood glucose was different between the night and the daytime and also between the beginning and the end of the daytime. A highly significant correlation existed between the 3-hr ad-lib intake and this time-dependent fall in blood glucose. Moreover, the correlation between the same fall in blood glucose and increases in subsequent intakes after 3-hr deprivation was also significant. The conclusion is drawn that rats eat at a rate just required to prevent hypoglycemia under ad-lib conditions and that after food deprivation they transiently increase this rate to correct the fall in blood glucose and to reestablish the required supply of glucose to tissues. PMID- 3843548 TI - External dacryocystorhinostomy results. PMID- 3843549 TI - [Computerized data on retinal vascular disorders (occlusion of the branches of the retinal veins and drepanocytosis)]. PMID- 3843550 TI - [Various applications of personal computers in the daily practice of the ophthalmologist]. PMID- 3843551 TI - [The value of computerized perimetry using the Peritest]. PMID- 3843552 TI - [Immunoglobulin E in tears]. PMID- 3843553 TI - A study of Usher's syndrome (cases from Belgium and China). PMID- 3843554 TI - Some basic but fundamental remarks concerning eye surgery. PMID- 3843555 TI - [Statistical evaluation of keratotomy after about 1000 operations]. PMID- 3843556 TI - Influence of progesterone on the activity of sebaceous gland in rat. PMID- 3843557 TI - Subcorneal pustular dermatosis in a young boy. PMID- 3843558 TI - Immunostimulation with an allied mycobacterium and DDS chemotherapy in lepromatous leprosy. PMID- 3843559 TI - Challenge of communicable disease epidemics in India. PMID- 3843560 TI - Blood brain barrier in neonatal jaundice. PMID- 3843561 TI - Evaluation of delivery of nutrition and health services in an I.C.D.S. block. Integrated Child Development Services. PMID- 3843562 TI - Electroencephalography in evaluation of term asphyxiated neonates. PMID- 3843563 TI - Measles vaccination. Prevention strategy for malnutrition. PMID- 3843564 TI - Pygopagus twins. PMID- 3843565 TI - Hyperbilirubinemia due to massive cephalhematoma. PMID- 3843566 TI - Cryptophthalmos and anophthalmos. PMID- 3843567 TI - Choledochal cyst. PMID- 3843568 TI - 4th ventricular cysticercus cyst. PMID- 3843569 TI - Myocarditis and related disorders. Proceedings of the International Symposium on Cardiomyopathy and Myocarditis. December 12-15, 1984, Tokyo, Japan. PMID- 3843570 TI - Clinical aspects of virus/immune myocarditis. AB - Although a cause-and-effect relationship between viral infection and myocarditis remains inferential, two distinct clinical syndromes can be identified. During the early viral phase, the cardiac manifestations emerge while the symptoms of active viral infection are also present. During the chronic phase, symptoms of the viral infection may be remote or nonexistent, and identification of active myocarditis is contingent upon an aggressive diagnostic approach with endomyocardial biopsy and gallium 67 imaging. The exact incidence of myocarditis in patients with heart failure of unknown cause is unclear due to lack of standardization of histologic parameters. There are no other clinical clues to the presence of myocarditis in those patients presenting with cardiomyopathy or ventricular arrhythmia. For further clarification of the incidence and various presentations of myocarditis a large multi-center trial is necessary. PMID- 3843571 TI - Profiles of biopsy-proven cases with myocarditis. AB - Fifty-seven patients with unexplained dilated hearts and congestive heart failure were studied clinically and by endomyocardial biopsy of the left ventricle. Of the patients, 61% had histologic evidence of active lymphocytic myocarditis. The sudden onset of heart failure, often with arrhythmias, if preceded by a viral like illness indicated a high chance of finding inflammatory infiltration in the biopsy material. No abnormal accumulation of immunoglobulin was found in these patients with dilated cardiomyopathy and myocarditis. Immunosuppressive therapy did not always bring about improvement. PMID- 3843572 TI - Myocardial bioptic findings in correlation with TL-201 imaging and hemodynamic parameters in patients with latent cardiomyopathies suspected of having myocarditis. AB - Sixty-eight patients (24 males, 44 females, mean age 37.2 years) belonging to NYHA classes I and II were investigated. All patients had a nondilated ventricle as well as hemodynamic criteria of "latent cardiomyopathy." In 78% of the patients, a high susceptibility to infection, frequent angina, or possible myocarditis were found. In 75.5%, the mean pulmonary artery pressure was abnormal. T1-201 scintigraphy revealed perfusion defects in 78%. Dyskinesia or hypokinesia were found in 52%. The left ventricular ejection fraction was normal in 74%. On biopsy, pathologic findings were detected in 60.9% of patients with a high frequency of hypertrophy and fibrosis (50%). In two patients, lymphocytic infiltrates were found. Immunohistologically, deposits of complement, IgG, IgM, and gammaglobulin, mainly in the sarcolemma, could be identified in 19.1% of cases. The myocardium was normal in 39.1%; insufficient material was found in 5.9% of patients. Morphologic, scintigraphic, and hemodynamic findings could not be correlated but the combination of two pathologic parameters permitted diagnosis. Biopsy was the most effective diagnostic method in myocarditis. PMID- 3843573 TI - Echocardiographic assessment of left ventricular wall motion in myocarditis. AB - Segmental wall motion abnormalities are common in patients with myocarditis. Left ventricular (LV) regional wall motion was assessed in six patients with myocarditis by two-dimensional echocardiography. Some of our patients demonstrated regional thinning of the wall, similar to myocardial infarction. Therefore, segmental wall motion abnormalities with or without regional wall thinning detected by two-dimensional echocardiography cannot be used to differentiate myocarditis from coronary artery disease. Nevertheless, echocardiography can be performed repeatedly and is useful for evaluating the severity of myocarditis by assessing LV regional wall motion abnormalities, changes in LV wall thickness and cardiac pump function during the course of the disease. PMID- 3843574 TI - Histopathologic aspects of viral myocarditis and its diagnostic criteria. AB - The morphologic criteria in diagnosing myocarditis are detailed. In fulminant cases, apart from the inflammatory infiltrate which often consists of chronic inflammatory cells, necrosis is found, frequently in the form of myocytolysis. Two groups of patients are analyzed. The first consisted of 214 cases who were clinically suspected of suffering from myocarditis. In 50% of these cases, the clinical suspicion was confirmed by morphologic examination of tissue obtained by endomyocardial biopsy. The other group of patients were suspected of having dilated cardiomyopathy and consisted of 1200 patients; in 300 of these patients, myocarditis was diagnosed morphologically by biopsy. Following sequential biopsies monitoring the response to treatment with corticosteroids and immunosuppressive agents, a classification into active, ongoing, resolving (healing), or resolved (healed) forms has been advanced. The different stages depend on the severity of the inflammatory infiltrate, the site of the inflammatory cells, the presence or absence of necrosis of adjacent myocardial fibers, and the degree of fibrosis. It has been emphasized that clear concepts and a uniform approach are essential in diagnosing myocarditis, not only to achieve precise diagnosis, accurately monitoring the response to therapy, but also in helping to establish the pathogenetic pathways for certain forms of cardiomyopathy. PMID- 3843575 TI - The diagnostic criteria of myocarditis by endomyocardial biopsy. AB - The difficulties in diagnosing acute idiopathic myocarditis have been highlighted. Only about 30% of clinically suspected cases show morphologic evidence of an inflammatory infiltrate. Difficulties experienced in obtaining positive results include timing of the biopsy in relation to the acute symptoms of the patient, sampling error, and quantitative criteria. In addition, pressure from the referring physician may influence the pathologic interpretation, i.e., in making a morphologic diagnosis on slender evidence. Caution is also necessary in the interpretation of end-stage disease of dilated cardiomyopathy and "chronic myocarditis." This is important as it influences therapy with immunosuppressive agents. The importance of obtaining a detailed history of drugs to which the patient might have been exposed and can result in myocarditis is also stressed. Only if an accurate and unbiased pathologic evaluation can be made will a prospective, randomized multicenter trial yield useful information. The Dallas Myocarditis Panel has set forth useful criteria and guidelines in an attempt to classify the morphologic diagnosis of myocarditis. Semantic and diagnostic criteria for myocarditis can still be challenged, but the Dallas criteria for evaluation does allow an accurate assessment by all pathologists, in spite of individual variation. PMID- 3843576 TI - Current problems in establishing quantitative histopathologic criteria for the diagnosis of lymphocytic myocarditis by endomyocardial biopsy. AB - Both the clinical and the biopsy diagnoses of myocarditis are prone to false positive and false-negative interpretations. False-positive clinical diagnoses probably most commonly result from a failure to recognize other disorders, such as cardiomyopathy and myocardial infarction, that may mimic myocarditis. False negative clinical diagnoses may occur in patients with myocarditis in whom the signs and symptoms are atypical, absent, or misinterpreted. The two most common errors made by pathologists that produce false-positive tissue diagnoses appear to be a failure to recognize the number of lymphocytes that occupy the normal myocardial interstitium and a misinterpretation of noninflammatory interstitial cells as lymphocytes. Sampling error may be the most usual cause of false negative tissue diagnoses. Since myocarditis is characterized by leukocytic and reparative responses, the most important features to evaluate in endomyocardial biopsy tissues are the type, distribution, and extent of the inflammatory infiltrate and the presence and extent of interstitial and endocardial fibrosis. Although no single histopathologic criterion is both sensitive and specific for myocarditis, it appears that quantitative evidence of an interstitial leukocytic infiltrate is currently the best available hallmark for myocarditis in biopsy specimens. It is suggested that a mean lymphocyte count greater than 5.0/high power (X 400) microscopic field be considered indicative of lymphocytic myocarditis and that a mean count less than this be interpreted as myocarditis only if discrete clusters of lymphocytes are identified, since differentiation of low-grade diffuse infiltrates from expected normal lymphocytic populations is problematic at levels less than 5.0. PMID- 3843577 TI - Research on cardiomyopathy in Japan. AB - Many experimental and clinical studies have been performed in Japan, since the Idiopathic Cardiomyopathy Research Committee sponsored by the Ministry of Health and Welfare of Japan was organized in 1974. Much interest has been focused on myocarditis as a possible pathogenesis of dilated cardiomyopathy and extensive experimental studies have been performed as well as histopathologic assessment at autopsy or biopsy. In the clinical field, suspected cases of myocarditis are not uncommon, but determination of etiological viruses is quite difficult in most patients except at the acute stage. Therefore, endomyocardial biopsy has been recently introduced in more than 13 institutes in Japan in an effort to obtain more accurate diagnosis. In 1983, the Idiopathic Cardiomyopathy Research Committee performed a study on the prognosis of cardiomyopathy in 1255 patients (786 hypertrophic and 469 dilated). The prognosis of dilated cardiomyopathy was poor, with a 5-year survival rate of only 54.3%. This figure contrasted with the better prognosis in those with hypertrophic cardiomyopathy (92%). PMID- 3843578 TI - Histopathologic and ultrastructural observations of acute and convalescent myocarditis: a serial endomyocardial biopsy study. AB - Serial endomyocardial biopsy findings were analyzed in ten cases with acute myocarditis of possible viral origin. The histopathologic findings were analyzed at the acute (0-10 days after the onset), subacute (11-21 days), and convalescent stages (22-167 days). The incidence and severity of various cardiac myocyte and interstitial changes were compared at each stage of the disease. The time-course changes of the histopathologic findings in acute myocarditis were as follows. At the acute stage, we observed: interstitial cell infiltration composed of fibroblasts, macrophages, and lymphocytes, fragmentation of the muscle bundles, myocytolytic changes, swelling and scarcity of the cytoplasm and swelling of nuclei, variation in size of the myocytes, disarrangement of the muscle bundles, interstitial edema, increased glycogen deposition in the myocytes, abnormal branching of the myocytes, and interstitial fibrosis. At the convalescent stage, most of the above findings could still be seen except for myocytolytic changes, swelling of myocytes, and interstitial edema. At the subacute and convalescent stages, an increase in abnormal branching and in double nuclei in the myocytes and nuclear degeneration became observable. A further control study comparing the changes at the convalescent stage of myocarditis and the myocardial changes in cases with chronic right ventricular overload in 58 cases revealed that in the former fragmentation of the muscle bundles, abnormal branching, size variation, glycogen deposition, and large mononuclear cell infiltrations were significantly more frequent. Ultrastructural observation of the myocytes revealed that they have a great potentiality for regeneration; myocytes showing severe myocytolytic changes may recover to regain an architecture of almost normal appearance. PMID- 3843579 TI - A comparative ultrastructural study on the nature of interstitial cell constituents in idiopathic myocarditis and myocardial infarction. AB - In order to observe the characteristics of interstitial cellular proliferation in cases with myocarditis of possible viral origin, a systematic ultrastructural analysis of the cell components in the interstitium was made employing endomyocardial biopsy at the acute (0-10 days after onset), subacute (11-25 days), and convalescent stages (26-167 days) of the disease in ten cases. For comparison, myocardial specimens from cases with myocardial infarction were taken from early autopsy cases or from tissue obtained during surgery. The dominant interstitial cells observed in the acute stage of myocarditis were fibroblasts (38.3% +/- 17.5%, mean +/- SD), macrophages (23.3% +/- 12.1%), and lymphocytes (18.0% +/- 18.1%); at the convalescent stage, fibrocytes (44.6% +/- 20.2%) and fibroblasts (22.5% +/- 8.0%) were commonly seen. In myocardial infarction, the dominant cells were macrophages (35.0% +/- 16.0%) and neutrophils (26.0% +/- 13.9%) at the acute stage, and lymphocytes (30.0% +/- 17.8%), plasma cells (27.1% +/- 20.0%), and macrophages (26.4% +/- 11.4%) at the late stage. Thus, some differences between the two diseases could be recognized. PMID- 3843580 TI - A clinicopathologic study on a cause of idiopathic cardiomyopathy and arrhythmia and conduction disturbance employing endomyocardial biopsy. AB - A comparative study of right ventricular histopathologic findings and clinical profiles in 174 cases with hypertrophic cardiomyopathy (HCM), 145 cases with dilated cardiomyopathy (DCM), and 241 cases with idiopathic arrhythmia and/or conduction disturbance with significant myocardial pathology [Electric disturbance type of cardiomyopathy (ECM)], totaling 560 cases, was made in order to clarify the role of viral myocarditis in these conditions. Postmyocarditis change (PMC) was defined by assessing serial biopsy findings in nine cases with acute myocarditis. The PMC was observed in three cases with HCM (1.7%), 22 with DCM (15%), and 21 with ECM (8.7%). The incidence of PMC was significantly higher in DCM and ECM than in HCM (P less than 0.001). The typical pattern of onset of acute myocarditis, i.e., high fever, upper respiratory infection, and gastrointestinal symptoms preceding cardiac symptoms within 10 days, was recognized in one case with HCM, eight with DCM, and 6 of 123 cases with ECM. The incidence was higher in DCM and ECM than in HCM (P less than 0.05). Of 46 cases with PMC, 12 (26%) showed this pattern, on the other hand only 3 of 377 cases (0.8%) without PMC did so (P less than 0.0001). Familial occurrence was not found in any of the 46 cases with PMC but was found in 38 of the 377 cases without PMC (P less than 0.01). This study indicates that viral myocarditis may often be the causative agent of idiopathic cardiomyopathy, especially DCM and ECM. It is also noticed that familial occurrence of the cases with PMC was never seen. PMID- 3843581 TI - Prognosis and treatment of cardiomyopathy and myocarditis. AB - Dilated cardiomyopathy is a heterogeneous group of disorders with a prognosis that is dependent upon the severity of presenting clinical and hemodynamic abnormalities. Although this condition is characterized by a high mortality, spontaneous improvement is noted in 25% of cases. Standard therapeutic modalities are nonspecific and consist of the therapy of congestive heart failure and ventricular arrhythmia. Recent studies suggest that beta blockade and cardiac transplantation may soon become accepted modalities in this condition. Acute viral myocarditis is a common disease that has a good prognosis, however occasionally progression to chronic myocardial disease has been identified. The therapy of acute viral myocarditis should be limited to symptomatic treatment, anti-coagulation, and bed rest. When chronic myocarditis is identified on endomyocardial biopsy in patients with heart failure of unknown cause, the treatment differs little from that of dilated cardiomyopathy with the exception that recognizing that efficacy has not been proven; immunosuppressive therapy may be added in life-threatening situations. Future studies will be directed at further clarification of the prognosis of each of these conditions with intensive evaluation of the role of beta blockade and immunosuppression. PMID- 3843582 TI - Hemodynamic and clinical effects of a new inotropic agent TA-064 in patients with refractory heart failure due to cardiomyopathy with special reference to dose response effects. AB - A new hydroxybenzyl alcohol derivative TA-064 exerts a positive inotropic action in experimental preparations. To assess the acute effects in man, we made a cardiac catheterization study of the hemodynamic responses to TA-064 (20 mg and/or 40 mg given orally) in eleven patients with refractory heart failure due to cardiomyopathy (nine patients with dilated cardiomyopathy and one with amyloidosis). All patients were already receiving full digitalis and diuretics therapy. The following statistically significant (P less than 0.05-0.01) effects were noted: Upon administration of 20 mg of the drug, the cardiac index (CI) increased from a mean +/- 1 SD of 1.6 +/- 0.4 to 2.1 +/- 0.6 l/min/m2; pulmonary capillary wedge pressure (PCW) fell from 25 +/- 5 to 21 +/- 5 mm Hg; right atrial pressure (RA) fell from 12 +/- 3 to 10 +/- 4 mm Hg. In contrast, when 40 mg TA 064 were administered orally, the CI increased from 1.7 +/- 0.4 to 2.4 +/- 0.9 l/min/m2; PCW fell from 25 +/- 8 to 20 +/- 6 mm Hg; pulmonary arterial mean pressure fell from 35 +/- 11 to 29 +/- 9 mm Hg. Neither systemic arterial mean pressure nor heart rate increased. No toxicity was observed. The plasma concentration of TA-064 increased dose-dependently and reached a peak value 0.5 1.5 h after oral administration. Plasma catecholamine levels revealed no significant changes before and after use of the drug; therefore, the mechanism of action may not have been mediated by catecholamine. PMID- 3843583 TI - Long-term follow-up of patients with previous myocarditis using radionuclide ventriculography. AB - A prospective long-term follow-up study is reported of 18 of 19 patients who survived a bout of presumed myocarditis 6-136 months (average 54 months) previously. The study included 14 males and four females, ranging from 27 to 63 years of age (mean, 44 years). Chest X-ray, ECG, echocardiogram, and resting and exercise radionuclide ventricular ejection fraction (RNVEF) for assessment of ventricular function were evaluated at follow-up. Resting and exercise RNVEF from seven control subjects were evaluated for comparison. Residual abnormalities were noted in chest X-ray (16%), echocardiogram (30%), and ECG (55%) in these predominantly asymptomatic patients (17/18 or 95%). The resting RNVEF (mean +/- SD) for the myocarditis group versus controls were 0.57 +/- 0.1 and 0.65 +/- 0.1 (P = NS), respectively. The exercise RNVED for the myocarditis group versus controls were 0.56 +/- 0.1 and 0.74 +/- 0.05 (P less than 0.01), respectively. Abnormal resting RNVEF was noted in six (33%) and exercise RNVEF in 14 (77%) patients in the myocarditis group. Two patients with abnormal exercise RNVEF subsequently developed findings consistent with dilated cardiomyopathy. It is unclear as to whether the abnormal ventricular function may serve as a marker for future development of dilated cardiomyopathy. PMID- 3843584 TI - Long follow-up study in patients with prior myocarditis by radionuclide methods. AB - Ten patients with previous myocarditis were evaluated to determine cardiac conditions by T1-201 myocardial perfusion imaging and stress radionuclide ventriculography during the follow-up of 18-102 (average 56) months; the results were compared with those from ten sex- and age-matched controls. Exercise capacity by supine bicycle ergometer was reduced in patients with myocarditis. Their resting left ventricular ejection fraction (LVEF) was 57.5% +/- 3.9%, similar to that of controls. LVEF response to stress in myocarditis was abnormal with an increment of end-systolic volume, while in the controls LVEF increased significantly during stress. Seven of the eight patients with an abnormal ejection fraction response had constant T1-201 perfusion defects. This study indicates that latent left ventricular dysfunction is present in patients with prior myocarditis and that nuclear study is useful for long-term follow-up. PMID- 3843585 TI - Peripartum heart disease. AB - Peripartum heart disease is reviewed in the light of reports in the literature and personal experience from the University College Hospital, Ibadan. It is concluded that it is worldwide in distribution but appears most commonly in multiparous black women with a low socioeconomic background. The clinical features are the same as those of dilated cardiomyopathy, with the exception of cases from Zaria, northern Nigeria, where heart failure may be induced by high salt and fluid intake. The possible causes of peripartum heart disease are reviewed. Glomerulonephritis, toxemia of pregnancy, and malnutrition have not been shown convincingly to be causal, and infection, hypertension, and alcoholism have been suggested. Hypertensive heart failure and toxemia of pregnancy can induce peripartum heart disease. It is concluded that the myocardial disorder in peripartum heart disease is probably the same condition as dilated cardiomyopathy, and that infection may be an important element. However, diverse other factors may also play a part. PMID- 3843586 TI - Clinical spectrum and endomyocardial biopsy findings in eosinophilic heart disease. AB - Fourteen cases of heart disease with hypereosinophilia were analyzed employing conventional cardiologic methods, including echocardiography, cardiac catheterization, and endomyocardial biopsy. The cases were divided into four types: Acute carditic (endocarditis, myocarditis, pericarditis; five cases); ventricular dilation (three cases); restrictive (three cases); electric disturbance (three cases). Biopsy revealed significant changes in all cases. In one case of the ventricular dilation type, endomyocardial fibrosis with myocardial degeneration was seen, and in another case mural thrombus formation was shown to be present. In three cases of the restrictive type, endomyocardial fibrosis (EMF) was observed. In two cases of the electric disturbance type, minor right ventricular myocardial degeneration was observed. In two of the three cases of the carditic type and in three of eight cases in other categories, postmyocarditic changes were observed. The course of the disease compared with the type of disorder revealed a short course in the carditic type and a longer course, ranging from 2 to 24 years, with one exception, in the other types. It is also confirmed that the various histopathologic changes can be related to particular clinical presentations. We have shown that the basic changes in eosinophilic heart disease are not restricted to the endomyocardium and that they occur in various parts of the heart causing more widespread manifestations. The more comprehensive term "eosinophilic heart disease" is a preferable description. PMID- 3843588 TI - Chlorpromazine-induced cardiomyopathy in rats. AB - We studied the chronic effects of chlorpromazine (CPZ) on the myocardium of rats using light and electron microscopy. Wistar strain rats were divided into two groups and given either normal saline or CPZ intraperitoneally at a dose of 5 mg/kg body weight/day for 30 consecutive days. Myocardial degeneration, atrophic muscle fiber, and myocardial fibrosis were observed by light microscopy in all CPZ-treated rats. Ultrastructural alterations of the myocardium were also found in all CPZ-treated rats. They consisted of contracted myofibers, mitochondriosis, degenerated mitochondria, dilated sarcoplasmic reticulum, and increased collagen fibers. However, no abnormal histologic or ultrastructural changes were observed in the normal saline-treated rats. We therefore conclude that a chronic administration of a sedative dose of CPZ causes myocardial damage in rats. PMID- 3843587 TI - Kawasaki disease. AB - Kawasaki disease, a pathologic syndrome known to occur in children, was first described in 1967 as mucocutaneous lymph node syndrome by Kawasaki. The disease occurs chiefly in infants under 4 years of age, presenting with symptoms similar to scarlet fever or Stevens-Johnson syndrome. The changes are found at postmortem and consist of multiple aneurysms and thrombosis, which occur predominantly in the coronary arteries and are responsible for sudden death in most cases. Kawasaki disease is a systemic, acute inflammatory disease entity and in the early stages shows diffuse, necrotizing necrosis. Vasculitis affects primarily the arterioles, venules, and capillaries. Once aneurysmal dilatation has taken place, the wall of the coronary aneurysm becomes thin and the basic structures are destroyed by infiltration of inflammatory cells, which is followed by scar formation within 1 month from the onset of the disease. Coronary arterial lesions are nowadays responsible for the increase of myocardial infarction among the patients. Causes of sudden death include acute ischemia from obstruction or narrowing of the main coronary artery due to thrombosis, thickening of the vascular walls, myocarditis, rupture, and involvement of the conduction system by inflammatory infiltrates, resulting in complete atrioventricular block. PMID- 3843589 TI - Cardiomyopathy and vitamin E deficiency in zoo animals and birds. AB - Cardiomyopathy associated with vitamin E deficiency was diagnosed in more than 100 ruminants and primates and in 106 embryos and newly hatched chicks and ducklings. Affected bird embryos failed to pip the eggshell and died inside. Newly hatched chicks and ducklings and neonatal ruminants were weak, had difficulty standing or rising, and died within a few days. Death usually occurred without premonitory signs of disease in juvenile and adult animals. On gross examination, the hearts of the neonatal ruminants had areas of mottled, pinkish tan myocardium. The hearts of the embryos and newly hatched birds were edematous, pinkish, and pale. In the juvenile ruminants, irregular, whitish patches or pale areas were seen in the myocardium. Histologically, there was multifocal myocytolysis in the myocardium of the neonatal and juvenile ruminants and embryos and newly hatched birds. Focal disseminated or diffuse myocardial fibrosis and myocytolysis were observed in the hearts of the adult animals. Plasma alpha tocopherol values were low enough in all species to be considered deficient. These values increased significantly after the addition of alpha tocopherol and/or vitamin E to the diets of the animals. Cardiomyopathy has not been diagnosed in any of the same groups of animals since supplementation was initiated. PMID- 3843590 TI - Cardiac lesions of selenium-vitamin E deficiency in animals. AB - Necrosis of myocardium and skeletal muscle is a consistent finding in the numerous animal species in which spontaneous or experimental selenium-vitamin E (Se-E) deficiency has been described. Etiologic factors in the development of these lesions include: low dietary levels of Se, vitamin E, and sulfur-containing amino acids; high dietary concentrations of polyunsaturated fats; exposure to prooxidant conditions (toxicity by O2, O3, Fe, doxorubicin, and radiation injury); and intake of Se antagonists (Ag, Cu, Co, Cd, Te, Sb, and Zn). Myocardial lesions in Se-E deficient animals are most frequently seen in calves, lambs, turkey poults, and ducklings. In calves and lambs with cardiac lesions, the clinical finding usually is sudden death after vigorous exercise. At necropsy, affected calves have areas of necrosis and calcification in the left ventricular free wall and ventricular septum, while in lambs these lesions are seen in the right ventricular subendocardium. Histologically, areas of myocardial damage have hyaline necrosis with or without calcification, subsequent macrophagic invasion, and eventual fibrosis. In growing pigs, the hearts may have scattered pale streaks in the ventricular myocardium, but the most striking alterations are widespread epicardial and myocardial hemorrhages ("mulberry heart"). Histologically, both vascular and myocyte lesions are present. Vascular changes include fibrinoid necrosis of small arteries and arterioles and fibrin microthrombi in capillaries. The myocyte lesions in pigs and in birds consist of multifocal hyaline necrosis with calcification, followed by macrophagic invasion and fibrosis. Ultrastructural study of these lesions reveals myocyte alterations, which include mitochondrial swelling and mineralization, myofibrillar lysis, and necrosis with contraction bands. PMID- 3843591 TI - Factors discriminating survivors and nonsurvivors in alcoholic heart disease. AB - Eighteen patients with dilated cardiomyopathy and a history of excessive ethanol intake were monitored for 3-98 months (mean 23 months). Six patients died (mean age 43.7 +/- 9.2 years) and 12 patients survived (mean age 48.8 +/- 9.5 years). Of the echocardiographic findings taken during heart failure, only the relative wall thickness to the internal dimension of the left ventricle (t/r ratio) differed significantly (survivors 0.33 +/- 0.77 vs. nonsurvivors 0.25 +/- 0.04, P less than 0.05). Of the hemodynamic data obtained after treatment of heart failure, left ventricular end-diastolic pressure differed significantly (survivors 6 +/- 2 vs. nonsurvivors 12 +/- 4 mmHg, P less than 0.001). The two groups could not be differentiated by ejection fraction, cardiac output, end diastolic or end-systolic volumes, or semi-quantitative analysis of histologic findings obtained by right ventricular endomyocardial biopsy (light microscopy). Only two of six nonsurvivors (33%) succeeded in abstaining from alcohol, while eight of twelve survivors (67%) became teetotalers (P less than 0.05). Total abstinence from alcohol seems to be essential but was not necessarily followed by recovery in the most severe cases. Thus, the absence of adequate hypertrophy and high left ventricular filling pressure may predict the prognosis in alcoholic heart disease. PMID- 3843592 TI - Recent trends in cardiac sarcoidosis research in Japan. AB - Our recent survey of the Japanese literature, actual case experience, and previous studies revealed the following results. Fifty-three cases were reported in which the main cause of death in sarcoidosis was congestive heart failure (11 of 17 cases, 64.7%) and not sudden death as was previously believed. ECG analysis revealed that third degree AV block, bundle branch block, and ventricular arrhythmias were the most frequent findings indicating the presence of cardiac sarcoidosis. It was recognized that in the Japanese population fatal myocardial sarcoidosis or clinical diagnosed cardiac sarcoidosis occurred most frequently in females over the age of 40 years. It is suggested that myocardial changes progress independently of granulomatous changes. This is due to the detection of a high incidence of basal lamina layering of myocardial capillaries (14 of 18 cases, 77.8%) and is considered to play a significant role in the progression of this disease. Radionuclide studies showed that thallium scintigraphy or technetium ventriculography were positive in those cases where ECG abnormalities are prominent, indicating the presence of myocardial disease. Previous therapeutic studies of cardiac sarcoidosis have shown a decrease in the incidence of sudden death; death due to congestive heart failure occurred more frequently despite pacemaker implantation. Control of congestive heart failure is thus regarded as the most important aspect of improved treatment and prognosis. PMID- 3843593 TI - Noninvasive tissue characterization of myocardium by topical 1H-and 31P-nuclear magnetic resonance spectroscopy. AB - Because of its nondestructive nature, topical nuclear magnetic resonance spectroscopy (TMR) was employed for the noninvasive evaluation of congenital cardiomyopathy (CM) in Syrian hamsters (BIO 14.6 strain). In a preliminary study, the size and pulse duration of the surface coil was determined to ensure that the detecting field covered the animal heart. The phosphate metabolite signals of the heart were distinguished from those of organs near the heart. At the cardiac apex, spectroscopically obtained constituent ratios of lipid/water by 1H-TMR and creatine phosphate/ATP by 31P-TMR were less in hamsters with CM than in the age matched normal control animals, which was in accordance with biochemical analyses performed after killing the animals. PMID- 3843594 TI - Endomyocardial biopsy study of cardiomyopathy in Poland. AB - The results of endomyocardial biopsy (EMB) are presented in 174 patients. Techniques and apparatus are described. EMB is safe and useful for diagnosing inflammatory myocarditis and as a guide to therapy. Unsuspected lymphocytic myocarditis was found in 17% of patients with dilated cardiomyopathy. The results confirm that the EMB findings in dilated cardiomyopathy are nonspecific and that restrictive cardiomyopathy is not confined to hypereosinophilic states and amyloid heart disease. PMID- 3843595 TI - Current status of myocarditis and endomyocardial biopsy in Brazil. AB - The results presented here show the inadequate attention that has been paid to myocarditis as a clinical entity and to employing endomyocardial biopsy examination as a valuable tool for diagnostic and research purposes. The results must be interpreted with caution, as otherwise false conclusions may be drawn as far as the epidemiological profile of cardiovascular diseases in Brazil is concerned. The data are likely to be influenced by the striking regional differences in development which are reflected in the scientific output. The high incidence of positive serology in patients in endemic areas of Trypanosoma cruzi infection is a further complication. It is possible that Chagas' disease may be overestimated clinically, decreasing therefore the interest in clarifying diseases with comparable clinical features. Myocarditis (excluding a protozoal etiology) and dilated (congestive) cardiomyopathy may serve as examples. Considering these various points, together with the complex and multi disciplinary requirements of obtaining and interpreting catheter biopsies of the heart explains the limited clinical application of this technique in Brazil. PMID- 3843596 TI - Cardiovascular diseases due to viruses. AB - In acute myocardiopathy and pericardiopathy, Coxsackie virus B infections are increasingly recognized as a cause of primary myocardial disease and may cause chronic cardiovascular disease. With other viruses, such as cytomegaloviruses and rubella virus, transplacental infection during pregnancy may occur, and this can cause the congenital rubella syndrome, which involves heart abnormalities. Other viruses are now under study. Myocarditis was observed in a newborn infant infected with Coxsackie virus B3, which was isolated by tissue culture methods. Experimental infection of Coxsackie virus A and B was studied in suckling mice and the histopathologic changes in heart muscle were observed. Laboratory findings of viral infection are very useful for clinical diagnosis, however care needs to be taken with respect to the obtaining of specimens, diagnostic procedures, and the assessment of results. PMID- 3843598 TI - Psychoanalysis: is the therapy destroying the science? PMID- 3843597 TI - Clinical aspects of myocarditis. AB - The diagnosis of myocarditis is discussed with reference to endomyocardial biopsy and the possible relation of dilated cardiomyopathy to myocarditis is explored. The various degrees of immune damage to the myocardium produced by myocarditis are reviewed, and evidence for altered immunity in dilated cardiomyopathy is assessed. The rationale for immunosuppressive therapy is surveyed. Both clinical and experimental data suggest that viral myocarditis is biphasic. The initial phase is infective with myocytolysis, lymphocytic infiltration, and a humoral immune response. The second phase is associated with a persistent antigen antibody reaction between the virus and the myocardium. Myocarditis may be acute with lymphocytic infiltration and myocytolysis; persistent active, with continuing changes including widening of the interstitium and fibrosis; healing, with persistent inflammatory cell exudate but no myocyte necrosis; and healed, with the absence of necrosis and of inflammatory cell infiltrates but widening of the interstitium and fibrosis. This state is indistinguishable from dilated cardiomyopathy. The selection of patients for treatment and the regimens of treatment are discussed. Acute myocarditis or persistent active myocarditis are indications for therapy with steroids and the immunosuppressive agent azathioprine. Benefit is unlikely when myocarditis is healed. Lymphocytic inflammatory cell infiltration alone is not sufficient indication for such therapy, because such infiltration may be found in dilated cardiomyopathy and also in toxic myocarditis due to drugs. Results of immunosuppressive therapy for acute and active myocarditis are encouraging, but a prospective randomized study is needed. PMID- 3843599 TI - Toward a definition of psychoanalytic neutrality. AB - The word and concept of neutrality play an important but confusing role in the history of psychoanalysis. Does neutrality imply indifference? The origin of this ambiguity is traced to the fact that Freud himself never used the word "neutrality" (Neutralitaet) in his own writings. (His term Indifferenz was translated as "neutrality" by Strachey.) The essence of the controversy that has simmered in the psychoanalytic literature ever since is contained in the question: "Is remaining true to the concept of neutrality somehow antithetical to the analyst's genuine involvement with the patient?" In this paper, I examine the feeling and power aspects of the word and suggest that the concept of neutrality becomes clinically useful when the analyst asks himself the question, "Neutral to what?" The analyst's awareness of his motives for recognizing and addressing certain conflicts and for overlooking others is heightened. With three clinical vignettes as illustrations, I explore the role of the concept of neutrality in deepening our understanding of (1) the analytic relationship; (2) The influence, on the conduct of the treatment, of the analyst's goals and theoretical persuasion regarding how the goals are to be achieved. As examples, I use the current debates over the relative value of the analyst's focusing his attention on: (a) the patient's mind in the hour rather than his life outside the hour and, (b) transference over nontransference interpretation. Finally, I emphasize the far-reaching implications of adding an explicit concept of "external reality" to A. Freud's exclusively intrapsychic definition of the "objective" analyst's position of neutrality as equidistant from id, ego, and superego. The addition of this fourth point to the analyst's "compass" widens the analytic field toward which the analyst is neutral. The concept of neutrality with respect to specifiable conflicts is thereby also broadened to include (a) interpersonal conflict within the psychoanalytic relationship and (b) conflict within the analyst. With these explicit additions, the concept of neutrality with respect to conflict becomes congruent with the current emphasis on the nonauthoritarian two persons aspects of the psychoanalytic relationship, without detracting from the primary analytic goal of deeper understanding of intrapsychic conflict. PMID- 3843600 TI - The common mirror dream, dreamer, and the dream mirror. AB - From the widely diverse category of so-called mirror dreams, we have differentiated the most frequent, which we have designated the common mirror dream (CMD). It is one in which the dreamer at some point looks into a mirror and reports seeing himself, a part of himself or a distorted though recognizable version of himself. Mirror dreams, including CMDs, are distinctly uncommon. Every dreamer of CMDs in our series had felt enjoined by the mother (in most cases with the father's collusion) not to see and regard her clearly and not to be an accurately reflecting mirror for her. The intensity with which the maternal injunction against accurate visual perception and evaluation was feared was an important distinguishing feature in our patients with CMDs. The essence of the CMD has been hypothesized to be a reciprocal, reverberating, visual exhibitionistic dyad representative of the mother-child relationship. The dream mirror may represent the wish that the analyst-mother counter a feared parental injunction against accurate visual perception and evaluation so as to correct the distorted perceptions of self and objects and provide visual affirmation of the value and integrity of the self-representation. For some patients, defense against the dangers of castration and loss of maternal love was accomplished by the mirror mechanisms of magically transforming images in the mirror, the ease of creating illusion in the mirror, and a fetishistic mechanism of visually reintrojecting a phallic symbol from the mirror. Our data failed to confirm many of the hypotheses of previous contributors as to specific symbolic meanings of the dream mirror. More relevant than the symbolism of the dream mirror are the many functions of the dream mirror for the dreamer. These are analyzed and discussed. PMID- 3843601 TI - Oedipal and preoedipal phenomena: some thoughts on their interrelation as manifest in adult analytic reconstructions. PMID- 3843602 TI - Determinants of object choice in adulthood: a test case of object-relations theory. AB - A clinical example of the effects of the absence of the father during the early childhood of a male analysand and its consequences for his later object choice is presented. This patient's biological father left the household when the patient was only a few months old, and his mother did not remarry until he was five years of age. Unconscious fantasies of the lost father, with whom the patient had no contact in reality, and longing for him organized the patient's drives and determined his self-identity as well as his later object choice. The patient developed both a positive and negative identification with the lost father. The identification was with a fantasy object not a real one. The case highlights the need to use a precise term in talking of the object, namely the mental representation of the object which may or may not be built up out of experiences with the real object. PMID- 3843603 TI - Identity formation as reflected in the acquisition of person pronouns. AB - Psychoanalytic theory on identity formation during rapprochement is enriched by considering psycholinguistic findings on person-pronoun acquisition. Pronouns such as I and you have often been employed by psychoanalysts as behavioral markers of the intrapsychic concepts of self and other and used to make inferences about the representation of these concepts in children as young as 18 months. Psycholinguistic research, however, reveals two sets of facts which such inferences overlook. First, knowledge of person pronouns, as of other words, is a developmental phenomenon. In children under 22-24 months, prior to the resolution of the rapprochement crisis, pronoun usage is stereotypic and wedded to context. Testing in diverse situations shows that this child has no consistent interpretation of these words. Second, and more important, when children acquire mature understanding of these words at the close of that rapproachement subphase, the knowledge reflected is somewhat different than psychoanalysts have held. Psycholinguistics shows that the meanings children express through person pronouns involve concepts of conversational role where first person indicates speaker, second person, person addressed, and third person, other (third) parties. It is argued that the psycholinguistic and psychoanalytic views on person-pronoun acquisition can be reconciled in the view that this developmental milestone is one of coordinating the expression of concepts of self and other with concepts of conversational roles. For psychoanalysts, then, person pronoun acquisition becomes a signal not only of the child's appreciation of the separateness of self and other, but also of their interrelatedness through the participation of self and other in conversational roles. The cognitive representation of these roles can be considered to function as an early ego identification, facilitating children's progress from the dyad to the larger social milieu. PMID- 3843604 TI - Superego formation, adolescent transformation, and the adult neurosis. AB - The superego is heir to the Oedipus complex but has a much larger developmental legacy which includes preoedipal precursors and the influence of latency and adolescence. The superego continues to change in function and content throughout life, and radical transformation in adolescence may result in developmental discontinuity as well as core developmental continuity. A case is discussed in which adolescence was overlooked in previous analysis and in which adolescent superego modification had a major impact on the patient's character and his adult neurosis. The developmental significance of adolescence experienced under conditions of social isolation and rejection with forebodings of the Holocaust was unrecognized in sanctioned silence and shared analytic denial. These repeated earlier experiences of silent submission and stifled protest, and the silent suffering of the patient and his family, were an integral part of his humiliating and emasculating adolescent experiences. The intimidated adolescent, threatened from within and without, identified with the aggressor as well as with the victim. Identification with the aggressor and glorified victor contributed to a final adolescent structuralization of a punitive, sadistic superego and a rigidly perfectionistic ego ideal. As an adult, he tended to passive masochistic compliance with diminished self-esteem and unconscious self-denigration. He was prone to shame and guilt, self-criticism, and hidden hypercritical attitudes toward others. The adolescent internalization of aggression, intense castration anxiety, and pervasive narcissistic mortification led to retreat from resolution of revived oedipal conflict and to concomitant detrimental superego alteration. These issues were of major importance for analytic understanding and therapeutic progress. PMID- 3843605 TI - Imposture, inauthenticity, and feeling fraudulent. AB - This paper deals with imposturous tendencies as ubiquitous and heterogeneous. They may enter into neurotic conflict and compromise, and also reflect an ego function disturbance involving multiple, shifting identities and subsequent problems in the subjective sense of reality of the self and objects. Imposture in a person undergoing analysis is, however, not only a function of individual character and psychopathology; it is also a function of certain inevitable requirements of the analytic situation which constitute a "pull" for its emergence. Vulnerable individuals will respond to this pull in revealing ways. Three case summaries illustrate the spectrum of imposturous tendencies. PMID- 3843607 TI - Response to Melvin Sabshin's commentary on psychoanalysis and psychiatry. PMID- 3843606 TI - Insurance. PMID- 3843608 TI - Thoughts on meeting in Germany. PMID- 3843609 TI - Cognitive aspects of splitting and libidinal object constancy: a reconsideration and reappraisal. PMID- 3843610 TI - Magnetic resonance imaging of the heart. AB - Magnetic resonance imaging (MRI) is a completely noninvasive technique for the evaluation of the cardiovascular system. With a multi-section technique and the spin echo pulse sequence the entire heart can be examined within six to ten minutes. All our cardiac MR studies were performed with electrocardiographic (ECG) gating, to obtain adequate resolution of the cardiac structures. With this technique, patients and animals with a variety of cardiac abnormalities were studied. The examined pathologic conditions included acute and chronic myocardial infarctions and their complications, hypertrophic and congestive cardiomyopathies, congenital heart diseases and pericardial diseases. MRI offers an enormous potential for cardiovascular diagnosis, even beyond the demonstration of pathoanatomy, because of the capability for direct tissue characterization and blood flow measurements. PMID- 3843612 TI - The role of organ transplantation in modern medicine. PMID- 3843611 TI - Management of a malfunctioning left ventricle in an artificial heart. AB - Artificial heart research is carried out in the United States, Europe, Japan, Argentina and the Soviet Union, and prolonged survival has been achieved in animals, which has increased the interest of the media and public in this field. Although recent advances are promising, device malfunction remains an obstacle to overcome in most laboratories. Relying on noninvasive monitoring techniques we were able to diagnose and correct artificial heart malfunction safely using surgical techniques employed during the heart implantation. PMID- 3843613 TI - Left heart bypass without thoracotomy. AB - An effective, simple and rapidly installed temporary mechanical assistance to the heart is needed. It should be capable of sustaining adequate circulation for several weeks. Patients with extensive myocardial infarctions, complicated by cardiogenic shock, or in end-stage heart failure, and who are candidates for heart replacement by transplantation or by a mechanical device, would benefit from such circulatory assistance. A mediastinal route was developed in human cadavers and in dogs institute left heart bypass without thoracotomy. Anatomical studies demonstrated the accessibility of the left atrium via the anterior mediastinum. A silastic cannula was made that can be inserted, with the help of a stylet, in the left atrium, via a mediastinoscopy. Two balloons attached to the cannula secure it onto the atrial wall and prevent hemorrhage. The cannula is connected to an extracorporeal circuit that is able to pump up to 90% of the cardiac output back into a femoral artery. The insertion of the atrial cannula proved to be simple, and the system very effective. PMID- 3843614 TI - A totally implantable electrical heart. AB - A totally implantable artificial heart, electrically actuated by magnetical energy transmission was developed in Switzerland. The pusher-plates and roller screw model was used for the pump. The main advantages of such a mechanical heart are discussed, in particular, the motor that transforms electrical energy into mechanical energy, and allows accurate control of the output and pressures of the artificial ventricles. The system includes the heart, the electronic control of the power supply, the microprocessor for the control of the mechanical heart's performance, a buffer battery, a rectifier and the secondary of the energy transmission. All these elements are implanted. Outside of the body are the main battery, the chopper and the primary of the energy transmission. At present, a left ventricle device for external assistance and a totally artificial heart have both been developed and implanted in calves. An optimized totally artificial heart is in construction, its size being compatible for human implantation; its volume is 500 mL and its total weight is 450 g. PMID- 3843615 TI - Is the skull view necessary in routine gamma camera bone scanning? AB - Bone scans were reviewed in 478 patients, 237 with carcinoma of the breast, 47 with carcinoma of the lung, 43 with carcinoma of the prostate, 56 with other malignancies and 95 in whom scans were performed for basic screening purposes. In only 11 of the scans reviewed were abnormalities of the skull alone observed and in only one of the 11 scans was the finding of an abnormality thought to be clinically useful. This study suggests that in patients with known malignant disease, the skull view adds little useful information. However, when performing bone scans for screening purposes, the skull view may well give helpful information. PMID- 3843616 TI - Synthesis and evaluation of p-iodo-phentermine (IP) as a brain perfusion imaging agent. AB - p-(123I and 131I)iodo alpha,alpha-dimethylphenethylamine (p-iodophentermine, IP) as the alpha-methylated analogue of iodoamphetamine has been prepared. It is hoped that this methyl substitution will increase the lipophilicity of the agent, enhance resistance to metabolism by monoamine oxidase, and will result in increased initial uptake and slower washout from the brain as compared to N isopropyl-p-(123I)iodoamphetamine. IP was prepared by diazotization of p aminophentermine followed by decomposition of the diazonium salt with KI. Radioiodinated IP was prepared either by the solid-phase isotopic exchange reaction or by decomposition of the piperidinotriazene derivative with a radiochemical yield of 40-60%. Biodistribution of 131I-IP in rats showed brain uptake in the range of 1.7% dose g-1 at 5, 30 and 60 min. Imaging studies with 123I-IP in dogs showed high brain extraction and slow washout of activity. PMID- 3843617 TI - To whose advantage is the needle brain biopsy? PMID- 3843618 TI - Etiology of ventriculomegaly in choroid plexus papilloma. AB - In order to test the hypothesis that overproduction of cerebrospinal fluid can cause the hydrocephalus seen in choroid plexus papillomas, adult mongrel dogs with and without hydrocephalus were subjected to high pressure intraventricular infusions of artificial cerebrospinal fluid (CSF). Pre- and postinfusion volumes were calculated, using a new method for on-line measurement of ventricular volume involving linear measurements from Conray ventriculograms. Ventricular volumes increased an average of 8% in 36 h. The dogs previously made hydrocephalic by the intracisternal injection of kaolin had a significant volume increase (34% in 36 h). Overproduction of CSF alone can produce hydrocephalus, but the presence of hydrocephalus in choroid plexus papillomas is more likely to be a result of the complex interaction of CSF overproduction and partial restriction of CSF flow. PMID- 3843619 TI - Pituitary adenomas in pediatric patients: are they more invasive? AB - Twenty patients with biopsy proven pituitary adenomas that became symptomatic prior to the age of 20 years are reviewed. Based on age, the patients are divided into prepubertal, pubertal, and postpubertal groups. An increased incidence of invasiveness was observed in those patients with onset of symptoms during the pubertal years compared to patients whose symptoms first occurred during the postpubertal years. Other series of pediatric pituitary adenomas in the English literature are reviewed, and ostensibly disparate conclusions are examined. PMID- 3843620 TI - Ectopic secreting choroid plexus in the oropharynx. AB - The authors report a case of an ectopic secreting choroid plexus in the oropharyngeal region of a neonate. The lesion presented as a rapidly growing tumor, containing CSF. No communication with the cranial cavity could be found. Following two surgical interventions the lesion was entirely removed and pathological examination revealed choroid plexus. PMID- 3843621 TI - Magnetic resonance evaluation of pediatric spinal dysraphism. AB - Magnetic resonance (MR) scans of 22 children with spinal dysraphism were reviewed. MR scans of the cervicothoracic spine in 12 cases revealed 10 Chiari II malformations, 1 Chiari III malformations, and 4 syringohydromyelias. Twelve MR scans of the lumbosacral region were performed demonstrating 11 tethered cords, 6 myelomeningoceles, 4 lipomyeloschises, 2 diastematomyelias, 2 syringohydromyelias, and 2 dermal sinus tracts. MR is effective in defining the relationship of the cerebellar tonsils and brainstem to the upper cervical spinal canal and in evaluating the extent of syringohydromyelia and the degree of cord expansion. The ability to image the spinal cord and associated paraspinal lesions directly in the sagittal and coronal planes with excellent tissue characterization allows MR to accurately diagnose and define the myriad abnormalities associated with pediatric dysraphism. PMID- 3843622 TI - Long-term intellectual prognosis of hydrocephalus with reference to 77 children. AB - The long-term intellectual prognosis of nontumoral hydrocephalus is described: 75% of the population have a full intellectual quotient greater than 70. But often, there is a heterogeneous pattern of the intellectual quotient with a great difference between verbal and performance results because of poor visuospatial skills. Disabilities of syntactical comprehension of language are also encountered. Sex, age, delay before shunting and frequency of shunt complications are not related to intelligence level or pattern. Meningitis and toxoplasmosis often result in a poor intelligence level, but other etiologies do not influence intelligence level or pattern. Visuospatial deficits, attention disorders and language disabilities are independent of the degree of hydrocephalus but are especially encountered when ventricular dilatation persists in spite of the operation. PMID- 3843623 TI - Cerebral perfusion pressure in the high-risk premature infant. AB - Continuous monitoring of the cerebral perfusion pressure (CPP) and arterial blood gases was performed in 13 high-risk preterm infants. CPPs were monitored with a Ladd fiberoptic transducer. Blood gases were measured via umbilical artery lines. Monitoring was performed within 12 h following birth and continued for 48-72 h. The mean gestational age (+/- SD) was 30.6 +/- 3.1 weeks with a mean weight (+/- SD) of 1,326 +/- 511 g. Initial mean CPP (+/- SD) was 37.3 +/- 8.9 mm Hg with a mean initial intracranial pressure (ICP) of 2.7 +/- 1.8 mm Hg. During the trial period, a sustained CPP below 25 mm Hg for over 2 h was indicative of a poor neurological outcome. A sustained ICP over 7 mm Hg was indicative of intracranial hypertension, but occurred in relation to nursing events such as suctioning or positioning of the patient's head. Seven infants demonstrated significant linear relationships between CPP or ICP and levels of arterial pCO2 or pH. The mean Apgar scores were significantly higher for this group, but the presence of this relationship did not indicate a better neurological outcome. PMID- 3843624 TI - Childhood form of adrenoleukodystrophy in the sucking infant. AB - The childhood form of adrenoleukodystrophy (ALD) in a sucking infant was discovered before the appearance of clinical symptoms. C24:0/C22:0 and C26:0/C22:0 ratios in umbilical cord plasma were significantly higher so that very long-chain saturated fatty acid-restricted milk was given. Ultrastructural study on biopsied rectal mucosa revealed rectilinear and/or curved electron lucent clefts in the histiocytes at 3 months of age, which were also recognized in the elder brother and another boy with symptoms of ALD. However, magnetic resonance imaging and T1 and T2 values were within the normal range in cerebral gray matter, cerebral white matter, caudate nucleus, internal capsule, and thalamus. PMID- 3843625 TI - Brain calcification in Kallman's syndrome. Computed tomographic appearance. AB - We report a 21-year-old white male with Kallman's syndrome (gonadotropic hypogonadism, hyposmia and sensorineural hearing loss) with extensive brain calcification, demonstrated for the first time by computed tomography. The pattern and anatomic distribution of the extensive brain calcification is nonspecific, being indistinguishable from those seen in other causes of brain calcification (principally diseases related to a disturbance in calcium metabolism), despite the normal serum calcium levels found in this patient. This syndrome, therefore, should be considered along with Cockayne's, Kearns-Sayre and Down's syndromes, tuberous sclerosis, carbonic anhydrase II deficiency, congenital mental deficiency and idiopathic familial basal ganglia calcification as another developmental cause of brain calcification, which usually show no disturbance in serum calcium level. PMID- 3843626 TI - Psychomotor retardation and macrocephaly in an infant. PMID- 3843627 TI - Analysis of recurrences in the primary tumor site in relation to the histologic involvement of the regional lymph nodes in patients with carcinoma of the head and neck. PMID- 3843628 TI - The treatment of soft tissue sarcomas in adults. PMID- 3843629 TI - Role of CT in staging prostate tumors. PMID- 3843630 TI - The efficacy of X-ray pelvimetry. PMID- 3843631 TI - Urography in children with renal failure using different contrast media. PMID- 3843632 TI - Effects of contrast media on rheological parameters. In vitro study. PMID- 3843633 TI - Computed tomographic findings and clinicopathologic features of intramuscular lipoma. PMID- 3843634 TI - Diverticula of the right colon: clinical and radiological considerations. PMID- 3843636 TI - The use of iopamidol, a non-ionic contrast medium, in retrograde cholangiopancreatography: a comparative evaluation. PMID- 3843635 TI - Renal pseudotumors caused by retained pararenal surgical sponges. PMID- 3843637 TI - Acroosteolysis: early marker of skeletal damage in patients with chronic renal insufficiency. PMID- 3843638 TI - Renal artery visualization during urography executed with rapid intravenous injection of high doses of contrast medium. PMID- 3843639 TI - The role of computed tomography in defining the target volume for the integrated therapy of orbital epitheliomas. PMID- 3843640 TI - Blood kinetics of a low dose of iodoxamate. PMID- 3843641 TI - Thoracic extramedullary hematopoiesis as an unusual evolution of sicklebetathalassemia. Presentation of a case and etio-pathogenetic considerations. PMID- 3843642 TI - Renal infarction secondary to selective arteriography. PMID- 3843643 TI - Comparative evaluation of radiology and scintigraphy in the diagnosis and staging of myelomatous skeletal lesions. PMID- 3843644 TI - Evaluation of a new adrenomedullary imaging agent: 131I-meta-iodobenzylguanidine (131I-MIBG). I: Experimental studies on animals. PMID- 3843645 TI - Sarcomas of the soft tissues and bones induced by radiotherapy; a report of 10 cases. PMID- 3843646 TI - A contribution to the radiological study of gastric erosions using the biphasic technique. PMID- 3843647 TI - Metastatic spread of malignant pleural mesothelioma. PMID- 3843648 TI - The CT appearance of two-level fractures of the posterior vertebral apophysis. A case report. PMID- 3843649 TI - Biphasic examination of the stomach by a standard technique. PMID- 3843650 TI - Bronchocolic fistula in a splenectomized thalassemic boy. PMID- 3843651 TI - Upper limb-cardiovascular syndrome with ulna aplasia. PMID- 3843652 TI - Study of the patellofemoral joint in orthostatism: preliminary considerations on technique. PMID- 3843653 TI - Bone mineral content assessment by photon absorptiometry in a normal population. PMID- 3843654 TI - Crohn's granulomatous colitis: early diagnosis and radiological staging. PMID- 3843655 TI - Computerised management of the radio-diagnostic ward: considerations on our three years experience. PMID- 3843656 TI - The correct collocation of the "TH3" class in prognostic meaning in breast cancer. PMID- 3843657 TI - The value of thermography and lymphography in the diagnosis and follow-up of Kaposi's disease. PMID- 3843658 TI - The degree of time asymmetry: on a new parameter of biological matter for estimation by radioisotope techniques and use in nuclear medicine. PMID- 3843659 TI - Hepatosplenic captation index (S/L ratio) as a portal hypertension test. PMID- 3843660 TI - The quantitative approach to the 99mTc-IDA radiohepatogram: clinical testing of three methods. PMID- 3843661 TI - Multiple diffuse fibrosarcoma of bone. PMID- 3843663 TI - Tolerance of moving strip treatment after surgery and chemotherapy in the treatment of ovarian cancer, III stage (F.I.G.O.). PMID- 3843662 TI - Combined radiosurgical treatment of bladder carcinoma: preliminary results of a prospective trial. PMID- 3843664 TI - "Shoulder arthrography". PMID- 3843666 TI - Renal and osteoarticular complications of Crohn's disease. PMID- 3843665 TI - Unusual radiological aspects of severe inflammatory urethral strictures in South Africa. PMID- 3843667 TI - Unilateral absence of a pulmonary artery. PMID- 3843668 TI - Upper abdominal pain therapy by CT-guided alcohol block of the celiac-splanchnic region. PMID- 3843669 TI - A case of esophageal lipoma diagnosed by computed tomography. PMID- 3843671 TI - Thermographic assessment of healed burn wounds. PMID- 3843670 TI - Increased nephrotoxicity caused by combined cholecystography? (Animal experiment). PMID- 3843672 TI - On the analysis of multi-component exponential decay curves of radionuclides: a method to identify the order of a compartmental model directly from the tracer data. PMID- 3843673 TI - Criteria for technology acceptability. PMID- 3843674 TI - Quantitative approaches for cancer risk assessment. PMID- 3843675 TI - Managing a low-incidence risk: the example of toxic shock syndrome. AB - This article demonstrates a methodology that allows individuals to reach a personal decision on the use of products which carry very small risks to health and life but also offer considerable benefits. A combination of the principles of dominance, extended dominance, and various methods of direct risk-benefit tradeoffs are shown to reduce the number of possible decisions regarding product use to the one optimal for the value structure of a particular individual. An historical examination of toxic-shock syndrome identifies tampons as a product with risks too small to warrant public intervention but too sizeable to be ignored. The methodology described here can be applied for all such products. PMID- 3843676 TI - Experimental design of bioassays for screening and low dose extrapolation. AB - Relatively high doses of chemicals generally are employed in animal bioassays to detect potential carcinogens with relatively small numbers of animals. The problem investigated here is the development of experimental designs which are effective for high to low dose extrapolation for tumor incidence as well as for screening (detecting) carcinogens. Several experimental designs are compared over a wide range of different dose response curves. Linear extrapolation is used below the experimental data range to establish an upper bound on carcinogenic risk at low doses. The goal is to find experimental designs which minimize the upper bound on low dose risk estimates (i.e., maximize the allowable dose for a given level of risk). The maximum tolerated dose (MTD) is employed for screening purposes. Among the designs investigated, experiments with doses at the MTD, 1/2 MTD, 1/4 MTD, and controls generally provide relatively good data for low dose extrapolation with relatively good power for detecting carcinogens. For this design, equal numbers of animals per dose level perform as well as unequal allocations. PMID- 3843677 TI - Powerline frequency electric and magnetic fields: a pilot study of risk perception. AB - The perception of the potential risk arising from human exposure to 50/60 Hz electric and magnetic fields was studied with a quasi-random sample of 116 well educated, opinion leaders using the risk perception framework previously developed by Slovic, Fischhoff, and Lichtenstein. These individuals rated exposure to fields from transmission lines and electric blankets on a variety of scales that have been found useful in characterizing people's risk attitudes and perceptions. These judgments allowed us to conjecture about the likely desire for regulation of these potential hazards and the likely response to a publicized problem (e.g., an accident or ominous research finding) involving these two sources of exposure. Various forms of detailed information about 50/60 Hz fields were supplied to respondents. The provision of information produced modest, but statistically significant, changes in perceptions in the direction of greater concern about the risks. In response to questions of public policy, participants desired modest regulatory control of field exposure from transmission lines and little or no control of field exposure from appliances like electric blankets. PMID- 3843678 TI - "Ambiguous carcinogens"--another look. PMID- 3843679 TI - Evaluating the carcinogenic potential of a chemical that appears to both increase and decrease tumor incidences. PMID- 3843680 TI - The practical importance of antitumor bioassay responses in carcinogen risk assessment. PMID- 3843681 TI - "Ambiguous carcinogens"--the main point. PMID- 3843682 TI - Synthetic-fuel plants: potential tumor risks to public health. AB - This article quantifies potential public health risks from tumor-producing pollutants emitted from two synthetic-fuel plants (direct liquefaction--Exxon Donor Solvent: and indirect liquefaction--Lurgi Fischer-Tropsch) located at a representative site in the eastern United States. In these analyses gaseous and aqueous waste streams were characterized; exposures via inhalation, terrestrial and aquatic food chains, and drinking water supplies were modeled. Analysis suggested that emissions of "polycyclic aromatic hydrocarbons," "aromatic amines," "neutral N, O, S heterocyclics," "nitriles," and "other trace elements" pose the largest quantifiable risks to public health. Data and analysis for these pollutant categories should be refined to more accurately match compound-specific estimated exposure levels with tumorigenic potency estimates. Before these results are used for regulatory purposes, more detailed analysis for selected pollutant classes are needed, and more sophisticated aquatic exposure models must be developed. Also, differences in geographic scales among the environmental transport models used need to be rectified. PMID- 3843683 TI - Medical decision making and elective surgery: the case of hysterectomy. AB - Review and analyses of three sources of data are presented indicating that 25% of hysterectomies are elective. Annual mortality associated with elective hysterectomy is estimated to be 319, or about 12,122 woman years. Cost-benefit analyses of mortality, life expectancy, morbidity, psychological sequelae, as well as dollar expenditures, reveal high costs and relatively limited benefits. Explanations for this apparent anomaly in decision making are explored and include economic incentives, system structure, sexism, and cancer prophylaxis. Principles of risk perception are discussed in terms of potential biases associated with the cancer prophylaxis motive. It is suggested that physicians' judgements of risk may be more salient to the decision process than those of prospective patients. PMID- 3843684 TI - Toxicity and carcinogenicity. PMID- 3843685 TI - Toxicity and carcinogenic potency. PMID- 3843686 TI - On the relationship of toxicity and carcinogenicity. PMID- 3843687 TI - Multidimensional criteria for technology acceptability: a response to Bernard L. Cohen. PMID- 3843688 TI - Assessment of health risk from exposure to contaminated soil. AB - The risk to human health posed by contaminated soil in a residential area depends on the potential extent of exposure to soil and on the toxic properties of the contaminants. A detailed soil exposure analysis is presented for young children, older children, and adults living in a house surrounded by contaminated soil. From this analysis, a lifetime exposure model is derived and used to assess chronic health risks. PMID- 3843690 TI - Undifferentiated and poorly differentiated carcinoma. AB - Undifferentiated (anaplastic) thyroid carcinoma is a highly aggressive neoplasm which may simulate microscopically a variety of soft tissue sarcomas. The three major subtypes are spindle cell, giant cell, and squamoid. Electron microscopic examination and immunocytochemical stain for cytokeratin are the most useful special techniques to document the epithelial nature of the tumor. Undifferentiated small-cell carcinoma is a term to be discarded. Nearly all tumors so designated in the past are malignant lymphomas, small-cell variants of medullary carcinomas, or poorly differentiated (insular) carcinomas. Poorly differentiated (insular) carcinoma is a thyroid malignant tumor characterized by the formation of solid nests and small follicles, a monotonous growth of small cells of follicular derivation, mitotic activity, necrosis, and peritheliomatous formation. Immunocytochemically, it is negative for calcitonin and positive for thyroglobulin. It is a clinically aggressive neoplasm, which metastasizes to both regional lymph nodes and distant organs. It is probably analogous to the tumor described by Langhans in 1907 as "wuchernde Struma." PMID- 3843689 TI - Follicular carcinoma. AB - The workshop participants agreed on the following points regarding follicular carcinoma: Follicular carcinoma should be divided into two groups according to its degree of invasion: encapsulated and widely invasive. Patients in the first group only occasionally develop distant metastases, whereas in the second group the prognosis is much poorer. In encapsulated follicular tumors, high cellularity and nuclear atypia should not be used as criteria of malignancy; this diagnosis should be based on the presence of vascular or capsular invasion. Only tumor thrombi occurring in vessels in or outside the capsule should be regarded as indicative of vascular invasion. Capsular invasion should be diagnosed only if penetration of the whole capsule is seen. We agree that some tumor islands within the capsule may represent true tumor invasion, but we believe that some others may be due to capsular infoldings or tangential sectioning. Whenever tumor tissue within the capsule is seen, additional tissue blocks from the capsular area should be processed in a search for capsular penetration or vascular invasion. The degree of differentiation in follicular carcinoma does not correlate to the course of disease as clearly as the degree of invasion, although the so-called insular or poorly differentiated, subtype seems to have a poorer prognosis. Thyroid carcinomas composed of large eosinophilic cells (Hurthle cell carcinomas) usually show follicular differentiation and are therefore included in the category of follicular carcinoma. The same diagnostic criteria of malignancy that apply for other follicular tumors should be used when evaluating these tumors. Although follicular carcinomas often show foci of clear cells, tumors composed solely of clear cells are rare. Most pure clear-cell tumors in the thyroid represent metastatic tumors, usually from the kidney. In the distinction of follicular carcinoma from papillary carcinoma, all differential diagnostic criteria should be used. However, in some cases, the diagnosis can be based on one criterion only, mainly the presence of widespread ground-glass nuclei or abundant neoplastic papillae in papillary carcinoma. The presence of occasional papillae in encapsulated tumors composed of large eosinophilic cells is not sufficient for the diagnosis of papillary carcinoma if the other microscopic features of this tumor are lacking. PMID- 3843691 TI - Medullary carcinoma. AB - This paper constitutes a brief review of recent developments related to medullary carcinoma of the thyroid gland. The following topics are discussed: definition; pathologic variants; mixed medullary and follicular carcinoma; C cell hyperplasia; and the possible existence of C cell adenoma. PMID- 3843692 TI - Thyroid tumor pathology. Proceedings of an international workshop. San Miniato, Italy, October 1984. PMID- 3843693 TI - Papillary carcinoma. AB - In addition to a description of the basic criteria for the diagnosis of papillary carcinoma, a review of discussions by all workshop participants on the illustrative cases is presented. Areas of consensus included the following: classification of mixed papillary and follicular carcinomas as papillary, regardless of follicular dominance; recognition of three morphological variants- follicular, encapsulated, and diffuse sclerosing; nonspecificity of individual histological criteria, with the necessity to utilize a combination of characteristic features as guidelines for establishing a diagnosis; citing of nuclear features as probably the most important diagnostic criteria, ie, increased N/C ratio, irregularity in outline, and paleness of staining (ground glass appearance); grading of tumors on the basis of either cytological or architectural characteristics remains of unproven prognostic value. (Gross extent of tumor at the first operation remains the most valuable single prognostic criterion.); defining small carcinomas by size rather than using the imprecise term "occult" with its variable definitions including some clinically evident tumors; classifying as undifferentiated those carcinomas presenting a mixed papillary and anaplastic appearance at the time of the first operation, and retaining the papillary designation for papillary cancers which later undergo dedifferentiation; and recognition that thyroglobulin is a constant and keratin an inconstant tumor cell marker, with the latter not specific for distinguishing papillary carcinomas from follicular carcinomas or from hyperplastic adenomas. PMID- 3843694 TI - Extranodal lymphoid lesions. PMID- 3843695 TI - Middle Eastern intestinal lymphoma. AB - A high incidence of intestinal lymphoma has been noted in the Middle East since the early 1960's. Initially thought to be a single entity, Middle Eastern intestinal lymphoma is now perceived as at least 3 distinct types. Mediterranean lymphoma (MTL), also known as alpha chain disease and immunoproliferative small intestinal disease (IPSID), occurs in the proximal small intestine of young adults who present with malabsorption. Histologically a phase of plasma cell infiltration is followed by invasive lymphoma. In approximately 50% of cases an alpha 1 heavy chain paraproteinaemia is present. Intestinal lymphoma of so called Western type (WTL) occurs in older patients without malabsorption or a paraproteinaemia. The lymphoma is of follicular center cell type and there is no preceding plasma cell infiltrate. Recent work suggests that both MTL and WTL belong to a distinctive group of lymphomas that specifically arise from mucosa associated lymphoid tissue. The third type of Middle Eastern intestinal lymphoma occurs predominantly in the ileo-caecal region of children and is histologically indistinguishable from Burkitts lymphoma. PMID- 3843696 TI - Topics in lung pathology. PMID- 3843697 TI - New diagnostic techniques in urology, Part 2. PMID- 3843699 TI - Urologic pharmacology, Part I. PMID- 3843698 TI - The zona-free hamster egg penetration test: its usefulness in male infertility. PMID- 3843700 TI - Urologic pharmacology, Part 2. PMID- 3843701 TI - New antimicrobial treatment of urinary tract infections and prostatitis. PMID- 3843702 TI - [The state of pathology and the pathologist today and in the near future (a proposal for improvement)]. PMID- 3843703 TI - Dermatologists should read their own slides. PMID- 3843704 TI - [Methodology of stereophotography in neurosurgical anatomy]. PMID- 3843705 TI - Measurement of protein using bicinchoninic acid. AB - Bicinchoninic acid, sodium salt, is a stable, water-soluble compound capable of forming an intense purple complex with cuprous ion (Cu1+) in an alkaline environment. This reagent forms the basis of an analytical method capable of monitoring cuprous ion produced in the reaction of protein with alkaline Cu2+ (biuret reaction). The color produced from this reaction is stable and increases in a proportional fashion over a broad range of increasing protein concentrations. When compared to the method of Lowry et al., the results reported here demonstrate a greater tolerance of the bicinchoninate reagent toward such commonly encountered interferences as nonionic detergents and simple buffer salts. The stability of the reagent and resulting chromophore also allows for a simplified, one-step analysis and an enhanced flexibility in protocol selection. This new method maintains the high sensitivity and low protein-to-protein variation associated with the Lowry technique. PMID- 3843706 TI - Associative learning modifies startle reflexes at the lateral lemniscus. AB - Acoustic and electrical brain stimulation studies have revealed that the ventral nucleus of the lateral lemniscus is a specific site within the brain stem where a previously conditioned stimulus modulates a simple reflex, the acoustic startle response. Sixty rats were implanted with bilateral electrodes in the ventral cochlear nucleus (VCN), ventral acoustic stria (VAS), dorsal lateral lemniscus (DLL), ventral lateral lemniscus (VLL), or the nucleus reticularis pontis caudalis (RPC). Following recovery all rats were conditioned to be fearful of a light by pairing a light with a shock for 10 trials on each of 2 days. One day later, the rats were placed in cages equipped to measure startle responses. Startle was elicited either acoustically or electrically through the electrodes that had been implanted in various parts of the acoustic startle circuit. Startle was elicited in darkness or during a brief presentation of the ligh previously paired with the shock. In all groups, acoustic startle amplitude was significantly greater in the presence of the light than it was in darkness, which is consistent with previous data showing that fear increases startle. Startle elicited electrically from the VCN, VAS, and VLL was also significantly increased by the light. In contrast, startle elicited electrically in the DLL or the RPC was not affected by the light despite the fact that the same rats in the same test session had elevated acoustic startle amplitude in the presence of light. Thus, it seems that for the first time in a complex vertebrate, a locus has been found within the nervous system (the VLL) where a conditioned stimulus acts to alter neural transmission so as to affect behavior. PMID- 3843708 TI - Mechanisms underlying the plasticity of hippocampal stimulation-induced reward. AB - It has been reported that the very slow acquisition of hippocampal self stimulation can be markedly facilitated by pretreatment with a program of repeated daily hippocampal stimulation (kindling). Three experiments were performed to investigate the neurophysiological basis of this effect. Experiment 1 demonstrated that unilateral stimulation pretreatment produced a facilitation of learning to lever press for stimulation delivered to the contralateral hippocampal electrode. Thus, there is a transfer of facilitation. In Experiment 2 it was shown that this transfer effect was not affected by lesion of the originally kindled focus, a result suggesting that the facilitated acquisition was not due to feedback to the kindled site. In Experiment 3 electrical activity during hippocampal self-stimulation was examined in order to explore the possible correlation between hippocampal reward and epileptiform activity. No relation was apparent: Lever pressing persisted even when no afterdischarge was elicited. The findings of these experiments are consistent with the hypothesis that the facilitatory effect of stimulation reflects the development of transsynaptic potentiation. PMID- 3843707 TI - Differential effects of hippocampectomy on classically conditioned rabbit nictitating membrane response related to interstimulus interval. AB - The effects of hippocampal ablation on acquisition rates and temporal characteristics of classically conditioned nictitating membrane responses were examined in groups of rabbits trained with a 150-, 300-, or 600-ms interstimulus interval. Acquisition rates were accelerated in the 150- and 600-ms groups. No effect was present in the 300-ms group. Response onset latencies were also affected in the 150-ms group. These findings were interpreted to support the notion that the hippocampus modulates learned motor behavior by a neural model of the response to be executed. PMID- 3843709 TI - Long-term working memory in the rat: effects of hippocampally applied anisomycin. AB - The extent to which protein synthesis is involved in working memory was investigated with the protein synthesis inhibitor anisomycin (ANI). Rats were trained to perform accurately on a 12-arm radial maze when delays of 240 min were interposed between choice 6 and choice 7. Bilateral hippocampal cannulas were then implanted. Accuracy on choices 7-12 was studied when ANI or saline was injected either 30 min before choice 1 or 5-10 min after choice 6 (Experiment 1). Pretrial injection of ANI significantly impaired performance following the 240 min delay, whereas ANI injected during the delay had no such effect. In Experiments 2 and 3, the ANI-induced amnesia was replicated, and the temporal course of development of the amnesia was determined. Pretrial administration of ANI did not significantly affect retention after a 2-min delay but did produce amnesia after delays of 15 min or longer. These data suggest that protein synthesis is important for the formation of temporary memories, provided the retention interval is long enough. It is suggested that working memory includes both short-term and long-term components. Protein synthesis appears to be important for formation of the long-term component, but not the short-term component, of working memory. PMID- 3843710 TI - Consequences of serial cortical, hippocampal, and thalamic lesions and of different lengths of overtraining on the acquisition and retention of learning tasks. AB - The ability of the rat brain to acquire or to retain specific learning tasks was tested under conditions of multiple lesions and widely different amounts of practice. Lesion targets were (a) the medial prefrontal and cingulate cortex, (b) the anterior and mediodorsal thalamus, and (c) the dorsal and ventral hippocampus. Rats were divided into seven groups. The first group received lesions of all three structural complexes prior to training in a delayed alternation and an active avoidance task. Groups 2-4 received lesions in different combinations of two of the three structural complexes prior to task acquisition. Group 5 first learned both tasks and then received the medial cortical lesion; thereafter it was retrained to criterion. Then, the thalamic lesion was made, and relearning was tested a second time. Finally, the hippocampal region was damaged, and a last relearning test was given. Groups 6 and 7 also first acquired both tasks; however, after that, they received 240 (Group 6) or 1,280 (Group 7) trials of overtraining. Following this, all three structural complexes were given lesions serially before relearning of the two tasks was tested. Nine of the ten animals of Group 1 failed to acquire the alternation task, but all learned the avoidance task. In Groups 2-4, all rats acquired both tasks. Postoperatively, rats of Group 5 were inferior to those of Group 6 in both tasks, and rats of Group 7 were the most successful animals of the last three groups. These results question the assumption that serial lesions with intermittent training between lesions have beneficial effects, and they also stress the importance of task practice, that is, of behavioral experience. It is argued that prolonged training will lead to a widely distributed storage of information within the brain. The process of wide diffusion of information will, however, be disturbed (or at least retarded) by lesions made shortly after task acquisition or task reacquisition (as was the case for animals of Group 5). PMID- 3843711 TI - Cortical substrates of taste aversion learning: involvement of dorsolateral amygdaloid nuclei and temporal neocortex in taste aversion learning. AB - The amygdaloid complex is functionally implicated in conditioned taste aversion (CTA) learning. Results of previous neurobehavioral studies have provided equivocal evidence concerning the involvement of specific amygdaloid nuclei in CTA learning. The present study was conducted to examine the involvement of the central (CE), lateral (LA), and basolateral (BL) amygdaloid nuclei and the temporal neocortices (area 20) in CTA learning. To that end, distinct groups of rats received bilateral electrolytic lesion placements in the CE, LA, BL, or the temporal neocortices. Control animals received scalp and meningeal incisions only. Following recovery, animals were habituated to a restricted drinking schedule with distilled water. Animals then received CTA conditioning, with LiCl used both as the conditioned stimulus and as the unconditioned stimulus. Anterograde degeneration histologies were performed on all brain tissue to evaluate relations between CTA learning deficits and axonal pathology induced by lesion placements. Results of behavioral manipulations indicated that destruction of the CE, LA, or temporal neocortex impaired CTA acquisition, but damage induced to the basolateral amygdaloid nucleus did not. Anatomical observations indicated that degeneration of amygdalofugal and/or corticofugal projections to the convolutions of the olfactory tubercle (medial), subthalamic nucleus, and the parabrachial complex is correlated with CTA learning deficits. These results indicate that destruction of the dorsolateral amygdaloid nuclei and/or the temporal neocortices may produce CTA learning deficits by affecting olfactory, gustatory, and/or gastrointestinal processing in various portions of the forebrain. PMID- 3843712 TI - Effects of conditioned fear on responsiveness to pain: long-term retention and reversibility by naloxone. AB - The effect of a conditioned fear stimulus (CS) on responsiveness to pain was examined in three experiments. In Experiment 1, a CS that signaled shock attenuated freezing in response to shock, with the attenuation occurring several minutes after the shock. Naloxone blocked the effect of the CS. The effect of the CS, including its reversibility by naloxone, was retained over an interval of 90 days. Experiment 2 showed that this effect on freezing is due to associative fear conditioning, rather than blocking of conditioning to context by a novel cue. In Experiment 3, presenting a fear CS just prior to administering a tail-flick (radiant heat) test of nociception increased the tail-flick latencies; that is, the fear CS apparently induced hyperalgesia rather than analgesia. Because this result makes it difficult to interpret the change in freezing seen in the first experiment as reflecting antinociception, it raises questions about how pain might differentially affect different measures of pain responsiveness. A memory hypothesis is advanced to resolve the different effects obtained with the freezing and tail-flick tests. PMID- 3843713 TI - Rats learn to like the taste of morphine. AB - When rats are forced to drink a morphine solution as their only source of fluid, they eventually reverse their initial preference and drink more morphine than water in a two-bottle preference test. The cause of this shift in preference was examined with the taste reactivity test which involves the analysis of fixed action patterns elicited by taste solutions infused into rats' mouths. Three morphine concentrations and two levels of motivation were studied. A greater percentage of ingestive taste reactivity responses occurred to the oral morphine infusion in morphine-raised rats than in water-raised rats. These data argue against the idea that enhanced morphine ingestion is caused by anticipation of positive consequences. Instead, they support the idea that rats come to "like" the flavor of the morphine solution; in other words, the palatability evaluation of the morphine changes, possibly through an association between the flavor and the hedonically positive effects of the morphine. PMID- 3843714 TI - Prenatal stress and prepuberal social rearing conditions interact to determine sexual behavior in male rats. AB - The two major categories of factors known to influence adult sexual behavior potentials are the relative amounts of androgen present during specific stages of perinatal ontogeny and adequate social stimulation during prepuberal development. The possible interaction between these two was evaluated by characterizing the ejaculatory and lordotic behavior potentials of prenatally stressed and control male rats that had been weaned at 16 days of age and raised either in total social isolation or with a same-age female, a control male, or a prenatally stressed male. The decrement in male sexual behavior produced by prenatal stress was attenuated by raising the male with either a female or a control male. Social isolation alone or in combination with stress resulted in severely deficient male behavior. Peripheral skin shock promoted ejaculatory behavior in many previously noncopulating prenatally stressed males raised with other stressed males, but it was ineffective in most isolated animals. The high lordosis potential characteristic of prenatally stressed male rats was slightly lower in the group with a female cagemate and was markedly decreased by social isolation. These results support and extend the finding by Dunlap, Zadina, and Gougis (1978) that prenatal hormonal events and prepuberal rearing conditions can interact to attenuate or accentuate the effects that either treatment alone has on the development of adult sexual behavior potentials. PMID- 3843715 TI - Habituation of the shortening reflex in the medicinal leech. AB - The shortening reflex was elicited in food-sated Hirudo medicinalis by light flashes delivered at 20-s intervals over a 40-trial session. The reflex was enhanced if animals were stored at 5-7 degrees C rather than 20 degrees C. Short term, that is, within-sessions, habituation was readily observed. Dishabituation could be produced by a single electric shock at Trial 30. However, the shock also enhanced responding when delivered before Trial 1 (sensitization). No long-term, that is, between-sessions, habituation occurred over 6 consecutive days of testing; on the contrary, responding gradually increased. PMID- 3843716 TI - Orienting response and detection of thalamic stimulation: mechanism of perceptual learning in the cat. AB - Naive cats cannot use thalamic stimulation as a signal to perform a behavioral response when stimulus intensities are too weak to evoke orienting behavior. Responses are quickly learned at higher intensities of stimulation, and with continued training, the cats become able to response to the weaker, previously ineffective stimulus. This increase in sensitivity is not due to changes in tonic arousal and appears to be relatively specific to the stimulated nucleus. The procedures may be useful in exploring the neural mechanisms of perceptual learning. PMID- 3843717 TI - Behavioral and hormonal responses to separation in infant rhesus monkeys and mothers. AB - Effects of social stimuli on behavioral and physiological responses were examined in infant rhesus monkeys at 4 and 9 months of age. Infants and mothers were removed from the social group and housed as dyads. Following this period, infants were removed and separated under four counterbalanced conditions: (a) totally isolated--placed in a holding cage for 24 hr; (b) mother present, no contact- housed in a single cage in view of their mother, no contact; (c) mother present, contact--similar to above, with mother in proximity to the infant; and (d) peer present--separated but in proximity to a peer. In the first experiment, the infants rarely vocalized when totally isolated but showed high rates of vocalization in the presence of the mother, both with and without contact. In the mother-present conditions, they failed to show a plasma cortisol response. In contrast, totally isolated infants showed a significant elevation in plasma cortisol. At 9 months of age, these infants were separated for 3 days under two different conditions: mother present and totally isolated. Once again, the infants that were totally isolated showed little vocalization but significant elevations in plasma cortisol. In contrast, infants separated in the presence of their mothers showed high vocalization rates but no cortisol response. The concepts of protest and despair are discussed as they relate to behavioral and physiological differences observed following different separation paradigms. PMID- 3843718 TI - Effect of age and long-term stress experience on adaptation to stress analgesia in mature rats: role of opioids. AB - The effects of aging and previous long-term stress on development of tolerance to stress-induced analgesia were evaluated in male Sprague-Dawley rats exposed to intermittent cold water swims (ICWS) in 2 degrees C water (eighteen 10-s exposure, three/min) on 15 consecutive days. Analgesia was measured by the tail flick test prior to and 30 min after ICWS. In young rats (4 months), tolerance developed faster and asymptotic tolerance was acquired sooner and was more complete than in older rats (15-16 months). Previous long-term exposure (but not the age at which it occurred) accelerated the development and acquisition of asymptotic tolerance to reexposure. Naltrexone (10 mg/kg, ip) partially and completely reversed tolerance to ICWS analgesia in 4- and 9-10-month-old rats, respectively, results suggesting that the opioids are involved in ICWS-analgesia tolerance in both young and old mature rats. In young animals, a second mechanism, naltrexone-insensitive, may be responsible for at least some of the differences in ICWS tolerance found between young and old mature adult rats. PMID- 3843719 TI - Forelimb placing and hopping reflexes in haloperidol- and morphine-treated cataleptic rats. AB - Although both haloperidol and morphine produce catalepsy, there are fundamental differences in their neurological effects (De Ryck, Schallert, & Teitelbaum, 1980). Haloperidol-treated rats show brisk righting, bracing, and clinging reflexes, effects suggesting that motor subsystems subserving static postural support are dominant over those involved in more phasic locomotor and orienting movements. In contrast, morphine-treated rats show impaired righting, bracing, and clinging, effects suggesting that postural support mechanisms are suppressed. In order to determine whether phasic postural reactions other than righting are also differentially affected by these drugs, forelimb placing and hopping reflexes were evaluated in rats given either haloperidol (0, 0.25, 0.5, 1, and 5 mg/kg) or morphine sulfate (0, 10, 20, and 40 mg/kg). Morphine produced a dose dependent impairment in all tests. In contrast, haloperidol did not impair contact placing to dorsal stimulation of the limb or chin placing. Hopping and contact placing to lateral stimulation of the limb were impaired by haloperidol, perhaps because stimulation induced a competing tendency to brace. These results provide additional evidence that morphine and haloperidol produce functionally different neurological states. PMID- 3843720 TI - Naloxone, preshock, and defensive burying. AB - Rats were injected with naloxone hydrochloride (3 mg/kg) or saline and subjected to preshock or no preshock prior to receiving a test shock that elicited defensive burying. Preshock was administered in a context different from, or the same as, that in which the test shock was delivered. The combination of naloxone and preshock led to more defensive burying than did saline and preshock. This was the case regardless of preshock context, a result suggesting that fear and/or analgesia may not always be critical ingredients in the preshock-naloxone interaction. Interpretative matters notwithstanding, the pattern of results for defensive burying was in basic agreement with that of other research on naloxone and defensive behavior and represents an extension of the literature to a new species-specific defense reaction. PMID- 3843721 TI - Opiates and play dominance in juvenile rats. AB - Social play between pairs of individually housed juvenile rats was studied by measuring pinning frequencies occurring during rough-and-tumble play. Low doses of morphine increased play, and opioid blockade with naloxone reduced play. Dominance, as measured by which pinned which most, was markedly reduced by naloxone and slightly increased by morphine. These effects were most apparent when animals were treated with these drugs continuously from the beginning of play testing. Although the respective drugs tended to reverse established dominance patterns (i.e., naloxone made dominant animals more submissive, and morphine made submissive animals more dominant), it was apparent that previously established social learning limited the effectiveness of these manipulations. In general, the results are consistent with the proposition that brain opioids are important in controlling the vigor of social relations. PMID- 3843722 TI - Thalamocortical relations in taste aversion learning: I. Involvement of gustatory thalamocortical projections in taste aversion learning. AB - The anterior insular gustatory neocortex (AIGN) has been implicated as a functional substrate of conditioned taste aversion (CTA) learning. Results of previous neuroanatomical and neurobehavioral experiments indicate that projections from gustatory-responsive neurons in the posterior ventromedial thalamic nuclei (parvicellular division; VPMpc) may provide relevant input to the AIGN during CTA learning. In rat, gustatory thalamocortical projections from VPMpc thalamus traverse the ventrolateral neostriatum (VLS) enroute to the AIGN. In these experiments, various neuroanatomical and neurobehavioral manipulations in the VLS were used to examine the contribution of presumed gustatory thalamocortical projections to CTA learning. These experiments demonstrate that projections from VPMpc thalamus to the AIGN are essential for normal CTA learning. Because both VPMpc thalamus and the AIGN each have been implicated as functional substrates of CTA learning, the present results suggest that the gustatory thalamocortical relay per se is necessary for normal taste-illness learning. PMID- 3843723 TI - Classical conditioning of a flexor nerve response in spinal cats: effects of tibial nerve CS and a differential conditioning paradigm. AB - Previous studies have shown flexor nerve response increases produced by classical conditioning procedures in spinal cats when the conditioned stimulus (CS) was delivered to the superficial peroneal nerve and the unconditioned stimulus (US) was delivered to the ankle skin. In this study, these effects were produced when the CS was delivered to the whole tibial nerve or to the medial plantar branch. The finding that response increases followed by extinction effects could be obtained when either the superficial peroneal or the tibial nerve was utilized allowed the assessment of the effects of a differential conditioning paradigm. The responses to CS-US presentations on the superficial peroneal nerve increased, whereas responses to CS presentations on the tibial nerve remained unchanged. However, lack of extinction effects in the superficial peroneal data suggested that stimulation of the tibial nerve potentiated superficial peroneal evoked responses. Furthermore, responses evoked by stimulation of either nerve increased when paired trials were given on the tibial nerve. These data demonstrate that stimulation of the tibial nerve potentiates responses to superficial peroneal nerve stimulation but that superficial peroneal nerve stimulation has no effect on responses to CS presentations to the tibial nerve. PMID- 3843724 TI - Serial ablations of the telencephalon and avoidance learning by goldfish (Carassius auratus). AB - Simultaneous bilateral ablation of the teleost telencephalon was confirmed to dramatically impair the retention, extinction, and "reversal learning" of a preoperatively learned instrumental avoidance response in a shuttle box. The focus of the experiment was on whether two-stage serial unilateral ablations of the teleost telencephalon would ameliorate the effects seen following one-stage bilateral ablation and whether such amelioration would be a function of the fish's experiences between the staged ablations. The degree of retention, relearning, and extinction of the avoidance response was not modulated by the serial ablation procedure whether or not there was interoperation retraining experience. However, reversal learning, in which the previous warning signal became the safety signal and the previous safety signal became the new warning signal, was less impaired following serial ablations than following single-stage bilateral ablation. These results are contrasted with those from experiments with mammalian subjects. PMID- 3843725 TI - Habituation of heart rate in functionally decorticate rats. AB - Habituation of acoustically evoked heart rate responses and retention of this habituation was studied in functionally decorticate rats. An improved technique to induce cortical spreading depression (CSD) resulted in a pronounced and continuous depression of electroencephalographic activity. In Experiment 1, short term habituation (STH) was demonstrated in decorticate rats and surgical controls; long-term habituation (LTH, 24 hr) occurred only in intact animals. In Experiment 2, only CSD groups were used. As in the first experiment, STH but not LTH was obtained under CSD. However, there was clear evidence that habituation could be retained subcortically for 30 min. It is concluded that the rat's cortex is not necessary for habituation of acoustically evoked heart rate responses and retention of this habituation over a moderately long interval. However, the results suggest that the cortex is involved in LTH and that the neuronal substrates of STH and LTH are, in significant part, different. PMID- 3843726 TI - Regional changes in EEG power and coherence during cognition: intensive study of two individuals. AB - Two men underwent weekly electroencephalogram (EEG) recordings while living for several months in a controlled laboratory environment. Data collected from an eight-channel EEG during a resting period and during performance of two cognitive tasks (word fluency and mental imagery) were subjected to spectral analysis. Statistical analyses on power and coherence were conducted for each subject separately, to determine whether that individual showed a characteristic pattern of EEG activity for a given cognitive task which was stable over time. Although substantial individual differences were observed, particularly for the theta band, both subjects showed changes in the spectral information over the anterior left hemisphere during the word fluency task. PMID- 3843727 TI - Nutritive and nonnutritive determinants of milk intake of suckling rats. AB - In order to determine the factors that enhance milk intake during deprivation, albino rats 15, 20, and 25 days of age were subjected, for 8 hr, to one of the following regimens: (1) privation, that is, separation from the dam and food; (2) privation with a maternal, thelectomized female; (3) privation with a maternal female whose nipples had been surgically ligated; (4) separation from the dam and food but receiving three 2% body weight intragastric preloads of milk; (5) with a dam whose nipples had been ligated and receiving the same intragastric preloads as Group 4; and (6) nondeprived rats. Rats were then allowed 45 min to suckle an anesthetized dam that was induced to let down milk every 4 min by intravenous oxytocin infusion. Intake at Day 15 was reduced by the opportunity to suckle, independent of receiving a milk load. This same trend was apparent, although not as strong, among Day 20 rats. By Day 25, nonnutritive suckling during the privation period no longer attenuated milk intake, although preloads did, whether or not they were paired with nonnutritive suckling. Thus, suckling in albino rats becomes increasingly freed from oral demands and more responsive to the nutritive consequences. PMID- 3843728 TI - Odors released by stressed rats produce opioid analgesia in unstressed rats. AB - When unstressed rats were placed in a chamber containing the odor of a conspecific that had received electric shock, they became analgesic as assessed by the formalin test. The odors of nonstressed conspecifics and novel odors produced no such effect. This analgesia was reversed by naltrexone. The data suggest that naturalistic stimuli innately associated with aversive environmental events can activate endogenous pain control mechanisms. PMID- 3843729 TI - Long-term potentiation facilitates behavioral responding to single-pulse stimulation of the perforant path. AB - Three experiments were conducted to determine whether long-term potentiation (LTP) could enhance the stimulus properties of electrical brain stimulation. First, a paradigm was developed in which single-pulse stimulation of the perforant path (PP) could acquire control over operant responses. Evoked potentials were recorded from the dentate gyrus (DG) on every trial in order to measure the postsynaptic consequences of the stimulus and to monitor synaptic efficacy in the PP-DG synapses. The second experiment confirmed the relation between the amount of evoked activity and acquisition rate and also showed that transecting the PP impaired performance. In the third experiment, high-frequency stimulation of the PP produced LTP and accelerated subsequent acquisition of behavioral responding to PP stimulation. These results document a clear link between increases in synaptic efficacy and changes in behavior and thereby demonstrate the ability of LTP to serve as at least one component of the neural bases of learning and memory. PMID- 3843730 TI - Spatial problem solving in a dual runway task by normal and septal rats. AB - The addition of a dual runway configuration did not disrupt the successful performance of normal animals, nor did it improve the deficit of septal rats on the Maier three-table spatial integration task. Both groups of animals displayed a preference for the outside runway configuration during exploration. During testing, however, septal animals retained this preference, whereas normal subjects attempted solution by using the inside runway configuration. This fact, in addition to the apparent lack of a habituation pattern during exploration, suggests that septal animals do not acquire a spatial representation of the test situation. It is suggested that the inability of septal rats in spatial situations is due to an inability to form rather than an inability to use spatial maps. PMID- 3843731 TI - Discrimination learning requiring different memory components in rats: age and neurochemical comparisons. AB - The performances of young (8-9 months) and aged (22-24 months) male ACI rats were compared in a T-maze requiring two discriminations, each of which placed different demands on memory processing. A spatial discrimination in the stem of the T-maze required long-term reference memory; a discrete-trial, alternation discrimination in the arms of the T-maze required working memory. Following acquisition training in one maze, rats were also trained in a second maze at a different location in the room. The correct response in the stem of this maze was opposite to that in the first maze. In two experiments with slightly different pretraining procedures, similar results demonstrated that aged rats made more errors in all phases of maze training than did their young counterparts. The results suggest that all components of memory processing were affected equivalently because the age-related impairment was not selectively greater in any component of the task. In a third experiment, aged rats were unimpaired in the ability to perform in a T-maze task involving a brightness discrimination with intramaze cues. This result suggests that the age-related impairment in the two-component T-maze task was restricted to the cognitive demands of the task. Neurochemical analyses were performed to determine whether regional neurotransmitter synthetic enzyme activities could be used to identify neurochemical systems associated with performance in these tasks and with any age related impairments observed. Choline acetyltransferase and glutamic acid decarboxylase were assayed as markers for cholinergic and GABAergic systems, respectively, in the hippocampi and the following cortical regions: frontal, sensorimotor, auditory, cingulate, occipital, and pyriform-perirhinal. A slight (8%) but significant age-related decline was observed in the activity of glutamic acid decarboxylase but not of choline acetyltransferase. Although the correlation between maze performance and regional enzyme activities generally supported several previous observations, the only significant correlation to emerge was between working memory performance and glutamic acid decarboxylase activity in the cingulate cortex. PMID- 3843732 TI - Noradrenaline and learning: effects of the noradrenergic neurotoxin DSP4 on imprinting in the domestic chick. AB - The effects of the noradrenergic neurotoxin DSP4 on imprinting in domestic chicks were investigated. Chicks received either DSP4 or distilled water and were trained 60 hr after hatching by exposing them to either a rotating red box or a stuffed jungle fowl. Noradrenaline concentration was determined in Wulst and medial and basal forebrain samples. The medial forebrain sample comprised mainly the intermediate part of the medial hyperstriatum ventrale, a region previously shown to be intimately involved in imprinting. The DSP4 treatment reduced forebrain noradrenaline levels by about 65%. DSP4 profoundly impaired imprinting in box-trained chicks but not in fowl-trained chicks. In box-trained chicks, the strength of imprinting was positively correlated with noradrenaline concentration in both medial and basal forebrain samples. It is suggested on the basis of these and previous studies that some of the neural structures and mechanisms involved in imprinting on the fowl differ from those involved in imprinting on the box. PMID- 3843733 TI - Cortical cholinergic impairment and behavioral deficits produced by kainic acid lesions of rat magnocellular basal forebrain. AB - The magnocellular basal forebrain (MNBF) provides extensive cholinergic innervation to frontoparietal cortex. In the rat, the MNBF is homologous to the human nucleus basalis of Meynert, a structure implicated in the cholinergic hypothesis of cognitive impairment in Alzheimer's disease (AD). Kainic acid (KA) was used to make lesions in the MNBF of rats which were compared with unoperated controls, sham-operated controls, and control rats injected with KA in the cortical area directly above the MNBF. The MNBF lesions depleted choline acetyltransferase in cortex but not in striatum or hippocampus. Cortical dopamine levels were unchanged; serotonin levels were unchanged in hippocampus and parietal cortex but decreased in frontal cortex. The metabolite levels of these neurotransmitters were unchanged in all brain regions examined. Compared with controls, rats with MNBF lesions were impaired in 24-hr retention, but not acquisition, of a passive avoidance task with escapable footshock. There were no differences between groups in mean number of daily avoidances on a bar-press active avoidance task, although the data suggested a slower rate of learning in MNBF rats. In a serial spatial discrimination reversal test with a snout-poke response, the MNBF rats performed significantly worse than controls, although all groups learned the task. This rodent model is useful for studying the role of the cholinergic system in memory and possibly for developing treatment strategies to alleviate the cognitive dysfunction of AD. PMID- 3843734 TI - Environmental influences on locomotor recovery following cortical lesions in rats. AB - Groups of rats were exposed to an enriched environment 2 hr per day for 30 days during the immediate pre- and/or postoperative period, or not at all. Animals in four of these groups sustained lesions in the bilateral sensorimotor cortex. One sham-operated control group was enriched pre- and postoperatively; a second control group was not. Animals were trained preoperatively to locomote across a narrow elevated runway. Testing on the locomotor task began 31 days after surgery and continued until preoperative performance levels were achieved. Preoperative enrichment had the most potent influence on initial deficit and recovery of locomotion. Animals that were enriched preoperatively failed to demonstrate any deficit postoperatively, and the topology of their hindlimb movement appeared to be normal. In preoperatively impoverished animals, postoperative enrichment reduced the degree of initial deficit and speeded recovery of locomotion when compared with animals not enriched at all. However, preoperatively impoverished rats demonstrated an aberrant topology of hindlimb movement even after they were "behaviorally recovered". PMID- 3843735 TI - Neonatal frontal lesions in hamsters impair species-typical behaviors and reduce brain weight and neocortical thickness. AB - Syrian golden hamsters with removals of the medial or ventral subfields of the frontal cortex at 4 days of age were compared behaviorally and neuroanatomically with hamsters with similar removals in adulthood. The behavioral results showed that hamsters with neonatal lesions show little sparing of species-typical behaviors such as hoarding and nest building. Study of the development of animals with early lesions showed that although as young juveniles the operated hamsters did not appear to be different from their littermate controls, as they developed they failed to improve in their performance as their littermates did. As adults these early operates were thus severely impaired relative to their littermates. Nonetheless, under certain environmental conditions it was possible to show that the animals were capable of performing the behaviors nearly as proficiently as normal animals. Thus, in order to thoroughly assess the extent of behavioral sparing following early neonatal lesions, it is necessary to test animals under widely varying stimulus conditions. Finally, when the brains of neonatally operated hamsters were compared with those of animals operated on in adulthood, there were striking differences; although the area of cavity appeared smaller in the neonatal operates, their brains weighed less and the remaining neocortex was thinner. PMID- 3843736 TI - A deficit in ambient visual guidance following superior colliculus lesions in rats. AB - Rats were tested for their ability to locate a hidden platform in the Morris swimming pool in which extrapool cues are required to guide locomotion. At the end of each trial, the rats were either removed immediately or allowed to remain on the platform for 60 s. Bilateral lesions of the superior colliculus (SC), as in a previous experiment (Milner & Lines, 1983), were found to produce a severe deficit. Permitting the rats to stay on the platform did not significantly affect performance in either rats with SC lesions or sham-operated controls. The results indicated that the reduced orienting behavior on the platform observed in the rats with lesions in the previous experiment was not the cause of their navigational impairment. It is concluded that the impairment following SC lesions comes about during the swimming itself and therefore that it may be attributed to a disturbance of, or a failure to utilize, ambient vision. PMID- 3843737 TI - Shock controllability and opioid substrates of escape performance and nociception: differential effects of peripherally and centrally acting naltrexone. AB - Rats exposed to inescapable shock exhibited analgesia and a significant impairment of shock-escape learning in a shuttle box situation 24 hr later. In contrast, rats exposed to escapable shock or to no shock displayed neither effect. Naltrexone (10 mg/kg) significantly reduced the analgesia and completely eliminated the escape deficit in inescapably shocked rats but induced hyperalgesia, coupled with a marked deterioration of escape performance, in escapably shocked and nonshocked rats. The same dose of quaternary naltrexone, which has low ability to cross the blood-brain barrier, had no effect on either the antinociception or the escape deficit produced by inescapable shock, although it also induced escape impairment and hyperalgesia in rats preexposed to escapable shock or to no shock. A second experiment demonstrated that both the escape interference and the antinociceptive consequences of prior inescapable shock could be reduced partially by a much lower dose (1 mg/kg) of naltrexone but 50 times this amount of quaternary naltrexone was still without effect. These results imply that the consequences of exposure to inescapable shock are mediated by activation of central opioid processes whereas naltrexone-induced effects in escapably shocked and nonshocked animals may be peripherally mediated. The relevance of these findings to the possible role of nociception in escape performance is discussed. PMID- 3843738 TI - Evidence of proceptive without receptive defeminization in male ferrets. AB - The latencies of groups of gonadectomized male and female ferrets to approach and interact with a sexually active stimulus male were measured after administration of estradiol benzoate (EB; 0, 5, 10, or 15 micrograms/kg) in adulthood. Receptive responsiveness to stud males was also assessed in these same ferrets during additional tests. Control female ferrets gonadectomized on Postnatal Day 35 displayed a dose-dependent reduction in approach latencies to the stud male which did not occur in control males castrated on Day 35. The approach latencies of males castrated on Postnatal Day 20 or Day 5 were intermediate between these two extremes. Equivalent dose-dependent reductions in approach latencies were observed in groups of ferrets ovariectomized on Day 5 and implanted sc with Silastic capsules containing either no hormone or different doses of testosterone over Postnatal Days 5-20 or 20-35. Equivalent dose-dependent increments in acceptance quotients were obtained in all groups of male and female ferrets following EB treatment. These results suggest that the capacity to display the proceptive, or appetitive, components of feminine sexual behavior is normally reduced in male ferrets as a consequence of the perinatal action of testicular hormones whereas receptive behavioral capacity is retained in males of this species. PMID- 3843739 TI - Exposure to a cat produces opioid analgesia in rats. AB - Two experiments were conducted to test the prediction that rats should react with reduced sensitivity/reactivity to nociceptive stimulation in the presence of a cat. In Experiment 1, naloxone or saline was administered, and rats were exposed to no stimulus, a novel stimulus, or a cat. In Experiment 2, rats were exposed to either no stimulus or a cat, and naltrexone was administered. In both experiments, rats tested in the presence of the cat showed a significant reduction in sensitivity/reactivity to a skin-irritating formalin injection. Naltrexone reversed this analgesia. PMID- 3843741 TI - Differential apomorphine effects. AB - Two dose levels of apomorphine were used with the tail-flick assay. A low dose of apomorphine significantly increased tail-flick latency, whereas a high dose significantly decreased tail-flick latency. Such differential effects have bearing on the reported complex interaction between the dopamine and endorphin systems in the brain. PMID- 3843740 TI - Early postnatal handling alters glucocorticoid receptor concentrations in selected brain regions. AB - Norway rat pups were either handled (H) or undisturbed (nonhandled, NH) in the period between birth and weaning on Day 21. Following weaning, half of the animals in each group were housed socially (Soc), and half were housed in isolation (Isol). At 120-150 days of age, all animals were sacrificed, and the following regions were dissected and frozen at -70 degrees C until the time of assay: frontal cortex, hippocampus, hypothalamus, amygdala, septum, and pituitary. [3H]Dexamethasone (3H Dex) binding in each region was examined by an in vitro, cytosol, receptor assay. 3H Dex binding was significantly higher in the hippocampus of both H-Soc and H-Isol than in NH groups. In the frontal cortex, 3H Dex binding was higher in the H-Soc animals than in the H-Isol and NH-Isol animals. There were no significant handling or housing effects found in the amygdala, hypothalamus, septum, or pituitary. Thus, early postnatal handling appears to influence the development of the glucocorticoid receptor system in the hippocampus and frontal cortex. These results are discussed as providing a possible mechanism for some of the previously reported effects of early handling on the development of the pituitary-adrenal response to stress. PMID- 3843742 TI - Lesions of the dorsal spinal cord decrease the duration of contact defensive immobility (animal hypnosis) in the rabbit. AB - Rabbits received either bilateral dorsal or unilateral dorsolateral spinal cord lesions. The duration and incidence of contact defensive immobility (CDI; animal hypnosis) were tested in these rabbits and in intact controls. Neither of the spinal cord lesions affected the number of CDI inductions, but rabbits with lesions of the dorsal spinal cord exhibited significantly shorter durations of CDI than either of the other groups which did not differ from each other. These results are interpreted to indicate that the somesthetic systems that ascend in the dorsal spinal cord are important for the maintenance, but not the initiation, of CDI. PMID- 3843743 TI - A case of Menkes disease cell culture examination and elastic cartilage electronmicroscopy. AB - A boy with clinical characteristics of Menkes disease was described. Extremely low serum copper concentration, low ceruloplasmin level and increased copper accumulation in cultured fibroblasts confirmed the diagnosis. Electronmicroscopy of elastic cartilage showed abnormalities of chondrocyte function and a derangement of extracellular substance polymerization. PMID- 3843744 TI - Genetic analysis of cleft lip and cleft palate in southern Poland. I. Empiric and relative recurrence risks. AB - The study covered 1009 families with CL +/- P and 490 families with CP coming from the region of southern Poland wherein the incidence is 1.3/1000 for CL +/- P and 0.51/1000 for CP. The empiric recurrence risk of CL +/- P and CP was 1.6% +/- 0.66 and 0.93% +/- 0.75, respectively. It was found that the risk of CL +/- P recurrence was three times greater among the sibs of male probands in comparison to that of female index cases. The relative risk of malformation recurrence in a family with one of the offspring already affected was 14.57 for CL +/- P and 19.85 for CP. The heritability values, calculated according to Falconer's formula were found to be 54.77% +/- 5.07 for CL +/- P and 52.79% +/- 8.63 for CP and suggested the significant effect of environmental factors on the etiology of these anomalies. PMID- 3843745 TI - Genetic analysis of cleft lip and cleft palate in southern Poland. II. Complex segregation analysis. AB - A complex segregation analysis based on the maximum likelihood method was applied on a sample of 329 families with CP and 687 families with CL +/- P. The results for CP malformations were equivocal, since the authors were unable to distinguish between the hypothesis of recessive inheritance with complete penetrance (chi 2 = 19.60) and that of multifactorial inheritance (chi 2 = 20.38). For CL +/- P lesions the most plausible hypothesis seemed to be that of dominant inheritance with low penetrance (t = 0.277) and relatively high frequency of phenocopies. For these hypotheses the values Q of theoretical recurrence risk were computed and presented. PMID- 3843746 TI - Chromosome studies in 3665 consecutive newborn children. AB - Results of chromosomal studies done on 3665 newborn children from central Poland have been described. As against a global incidence of 1:1022 for trisomy G and 1:1308 for the balanced translocation D/D in infants, the respective figures for the Polish infants were, 1:610 and 1:1221. Likewise, against the global incidence of 1:823 for the karyotype 47, XXY and of 1:1072 for the karyotype 47, XYY in infants, the respective incidence in the Polish infants was 1:626 and 1:939. The study has demonstrated also that the frequency of occurrence of the different widths of the C-bands had a distribution close to normal. The authors have noted that the children with chromosomal abnormalities were more frequently not as well developed at birth as were children with normal karyotypes. PMID- 3843747 TI - Laboratory animals in genetical research. AB - The article focuses on the inbred strains of mice and their specialized derivatives in the context of genetic and developmental problems, and constitutional diseases. PMID- 3843748 TI - Low molecular weight copper binding proteins in Wilson disease. AB - Cultured fibroblasts deriving from Wilson disease patients were compared with the control ones in respect of copper accumulation and low molecular weight copper binding protein (metallothionein) properties. No evidence was obtained that metallothionein abnormality could be a primary cause of copper metabolism disturbances in Wilson disease. The determination of radioactivity, present in serum low molecular weight fraction 24 hours after intravenous injection of 64Cu, has been suggested as an additional tool in Wilson disease diagnosis in doubtful cases. PMID- 3843749 TI - Increased expression of fragile site Xq by hydroxyurea. Preliminary communication. AB - The addition of hydroxyurea in final concentration 1.3 X 10(-5) M increases the frequency of fraX in comparison with cultures without hydroxyurea. The same concentration of hydroxyurea did not induce fraX formation and "nonspecific" gaps in cultures of lymphocytes derive from healthy individuals. The possible explanation of this effect is discussed. PMID- 3843750 TI - The segregation-linkage analysis of genetically determined characters. AB - The model of combined segregation-linkage analysis is presented. The method offers the opportunity of simultaneous estimation of recombination fraction between the locus of genetic marker and that of a disease gene and the evaluation of its inheritance pattern. The computer programme MUBAS estimates combinations of parameters: dominance-d, penetrance-t and recombination fraction by the method of maximum likelihood using the distribution of the observed numbers of sib pairs: ill/proband and healthy/proband. PMID- 3843751 TI - The maximum likelihood estimation of haplotype frequencies of HLA and HLA-like systems and addition loci of genes with the different modes of inheritance. AB - Conventional formula for the estimation of haplotype frequencies proposed by Yasuda was extended for the haplotypes constituting three HLA loci and two additional loci of genes with codominant alleles. The computer programme FREHAP estimates 32 haplotype frequencies rijkmn by the method of maximum likelihood, as well as it calculates the marginal frequencies rijk.. and r...mn, the matrix of expected numbers and the value of chi-square for the goodness of fit. The FREHAP has been programmed in FORTRAN IV for a CDC CYBER 72 computer. PMID- 3843752 TI - Hyperphenylalaninemia in Polish children's population. AB - Differential diagnosis in 144 cases of hyperphenylalaninemia detected through the newborn screening is discussed. In 123 infants phenylketonuria was diagnosed, so they were treated with the low phe diet. Verificatory examinations performed in diagnostically doubtful cases with the use of protein loading confirmed persistent enzymatic defect in all of them. In 21 infants with blood serum phenylalanine level below 15 mg% and lack of phe urinary metabolites, preliminary diagnosis of mild hyperphenylalaninemia was made and they were left without dietary treatment. A decrease with age in phenylalanine and tyrosine values was observed in this group. Mental development score, in the group as a whole, at age 3-7 years was normal. Two cases with relatively low IQ values have been discussed in regard to possible reason of their mental delay. PMID- 3843753 TI - Studies on senile hypertension in a rural mass survey--in relation to arteriosclerosis. PMID- 3843754 TI - Studies on myosatellite cells of motor neuron disease. PMID- 3843755 TI - Multivariate analysis of the risk factors for cerebral infarction. PMID- 3843757 TI - Proceedings of the 16th Symposium on Drug Metabolism and Action. Gifu. PMID- 3843756 TI - Studies on the prediction of cerebrovascular stroke. PMID- 3843758 TI - [Thermal degradation of dibutyltin fluoride and pulmonary toxicity of combustion products in rats and guinea pigs. 1. Analytical study of dibutyltin fluoride thermolysis between 200 and 600 degrees C]. PMID- 3843759 TI - [Bromine, bromides, pregnancy and lactation. Apropos of 2 case reports]. PMID- 3843761 TI - [World Federation of Associations of Clinical Toxicology Centers and Poison Control Centers. Information bulletin No. 33]. PMID- 3843760 TI - [Withdrawal of non-dopaminergic antiparkinson drugs]. PMID- 3843763 TI - [Pituitary adenomas. Experience of the Endocrinology Clinic of the Avicenna University Hospital Center (apropos of 59 cases)]. PMID- 3843762 TI - [Aspartame and its effect on gestation in rats]. PMID- 3843764 TI - [Echocardiography in chronic constrictive pericarditis (apropos of 22 cases treated surgically)]. PMID- 3843765 TI - [Contusions of the scrotum and its contents (apropos of 30 cases)]. PMID- 3843766 TI - [Prognostic Nutritional Index. In ENT and maxillofacial surgery]. PMID- 3843767 TI - [Oto-neurosurgical cooperation in the surgical treatment of acoustic neuroma]. PMID- 3843768 TI - [Apropos of a case of acute aortic dissection (value of echocardiography)]. PMID- 3843769 TI - [Carcinoid tumor of the appendix with the flush syndrome (apropos of 1 case)]. PMID- 3843770 TI - [Management of breech presentation in primipara]. PMID- 3843771 TI - Computer graphics, visual imagery, and spatial thought. PMID- 3843772 TI - The social origins of logic: the contributions of Piaget and Vygotsky. PMID- 3843773 TI - Peer conflict in pair therapy: clinical and developmental analyses. PMID- 3843774 TI - Identity and vocational development. PMID- 3843775 TI - Identity and the development of religious thinking. PMID- 3843776 TI - Identity in the context of adolescent psychology. PMID- 3843777 TI - Identity and political socialization. PMID- 3843778 TI - Identity and the choice of social roles. PMID- 3843779 TI - Salt, hypertension, and confusion. PMID- 3843780 TI - Renal vasculitis and intravascular coagulation. PMID- 3843781 TI - Renal vascular phenomena in systemic sclerosis (scleroderma). PMID- 3843782 TI - Renal involvement in thrombotic microangiopathies. PMID- 3843783 TI - Activation of coagulation pathways and fibrin deposition in human glomerulonephritis. PMID- 3843784 TI - Erythropoietin: a hematopoietic hormone produced by the kidney. PMID- 3843785 TI - The anemia of chronic renal failure. PMID- 3843786 TI - Hemolysis in chronic renal failure. PMID- 3843787 TI - Oxygen transport in uremia. PMID- 3843788 TI - Iron and folate metabolism in renal failure. PMID- 3843790 TI - Fixing the unbroken. PMID- 3843789 TI - The role of androgens in the treatment of anemia of chronic renal failure. PMID- 3843791 TI - The hematologic disorders of chronic renal failure. PMID- 3843792 TI - Leukocyte abnormalities in renal failure and hemodialysis. PMID- 3843793 TI - Financing fellowship training. PMID- 3843794 TI - Noninvasive diagnostic procedures in renal disease. PMID- 3843795 TI - Serology in renal disease: a review. PMID- 3843796 TI - Blood and urinary chemistries in the evaluation of renal function. PMID- 3843797 TI - Urinary indices and chemistries in the differential diagnosis of prerenal failure and acute tubular necrosis. PMID- 3843798 TI - Don't ask what it means. PMID- 3843799 TI - Renal biopsy. PMID- 3843800 TI - Renal biopsy in 1985. PMID- 3843801 TI - Diagnostic, prognostic, and therapeutic implications of the renal biopsy in children with renal disease. PMID- 3843802 TI - The role of renal biopsy in the management of lupus nephritis. PMID- 3843803 TI - The renal biopsy in drug-induced nephropathies. PMID- 3843804 TI - Renal biopsy in the adult nephrotic syndrome. PMID- 3843805 TI - Basement membrane proteoglycans of the kidney. PMID- 3843807 TI - A new role for DNA virus early proteins in viral carcinogenesis. AB - The T antigen proteins encoded by DNA tumor virus early genes are involved in the transformation of normal cells to immortalized neoplastic cells that may or may not be tumorigenic in immunocompetent animals. Studies have been made of the tumorigenicity of DNA virus-transformed cells and the interactions of these cells in vivo and in vitro with immunologically nonspecific host effector cells such as natural killer cells and macrophages. The results imply that the T proteins determine the capacity of transformed cells to induce tumors by governing the level of susceptibility that transformed cells express to destruction by such host cellular defenses. PMID- 3843806 TI - Urinary and renal tissue kallikrein in the streptozocin-diabetic rat. AB - The renal kallikrein-kinin system is thought to participate in blood pressure regulation and displays abnormalities in human hypertension, as well as in many animal models of hypertension. Urinary excretion and tissue levels of renal kallikrein were measured in streptozocin (STZ)-diabetic rats in relation to blood pressure, glycemia, and insulin treatment. In study 1, STZ-diabetic rats with marked hyperglycemia showed reduced kallikrein-like esterase excretion, compared with control rats, when first measured after 7 days of diabetes (9.9 +/- 2.5 versus 17.5 +/- 2.4 EU/24 h, P less than 0.05). This difference increased with time and, after 210 days, urinary esterase excretion in diabetic and control rats was 6.7 +/- 2.1 and 39.0 +/- 6.0 EU/24 h, respectively (P less than 0.001). Urine kallikrein, measured by radioimmunoassay, was similarly reduced in diabetic rats (40.4 +/- 8.0 versus 88.0 +/- 6.5 micrograms/24 h, at 30 days, P less than 0.001). At 120 days, systolic blood pressures were elevated in diabetic rats (P less than 0.05), and at 180 days over 60% of the diabetic rats had pressures above the highest pressures of control rats. In study 2, STZ-diabetic rats were treated with insulin for 2 wk (2 U NPH at 0800 h, or 2 U NPH at 0800 and 1600 h). In the single-dose group, with hyperglycemia similar to that of diabetic rats in study 1, kallikrein excretion was reduced as early as day 2, compared with nondiabetic rats (56.0 +/- 6.1 versus 109 +/- 9.4 micrograms/24 h, respectively, P less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3843808 TI - The Israel experience. PMID- 3843809 TI - Women, nursing and feminism: an interview with Alice J. Baumgart, RN, PhD. PMID- 3843810 TI - Women and mental health: a feminist view. PMID- 3843811 TI - Women's groups: a non-traditional method of mental health treatment. PMID- 3843812 TI - Postpartum depression: what is it, what helps? PMID- 3843813 TI - Hospital-based midwifery: meeting the needs of childbearing women. PMID- 3843814 TI - More effective education for breastfeeding women. PMID- 3843815 TI - The revolution in women's health care is happening now. PMID- 3843817 TI - Osteoporosis: a detailed look at the clinical manifestations and goals for nursing care. PMID- 3843816 TI - Osteoporosis: catching the silent thief. PMID- 3843818 TI - Premenstrual syndrome. PMID- 3843819 TI - State of professional association: President's address. PMID- 3843820 TI - Sharing, caring, living, dying. PMID- 3843821 TI - Being there. PMID- 3843823 TI - Who's in control? PMID- 3843822 TI - The best instructor. PMID- 3843824 TI - The living will-where it stands. PMID- 3843825 TI - Support for the survivor. PMID- 3843826 TI - Older widowers: a small group with special needs. PMID- 3843827 TI - The nursing home: a setting for student learning. PMID- 3843828 TI - A plastic head cover to reduce surgical heat loss. PMID- 3843829 TI - Estrogen-depletion urethritis. PMID- 3843830 TI - Nutrition. Calcium update. PMID- 3843831 TI - Drugs and the elderly. Product-to-product variability. PMID- 3843832 TI - [The "practice-research" tandem in preschool screening]. PMID- 3843833 TI - [A new approach in the treatment of hemophilia patients]. PMID- 3843834 TI - [Psychosocial and psychosexual aspects of contraception]. PMID- 3843835 TI - [The immigrants from Latin America. Interview by Al Andrade]. PMID- 3843836 TI - [The Israel experience]. PMID- 3843837 TI - [The adolescent mother head of the family. A life of solitude and dependency]. PMID- 3843838 TI - [Health of the caregiver]. PMID- 3843840 TI - Purification and characterization of multiple forms of human plasma prekallikrein. AB - Prekallikrein was purified 1,200-fold in 20% yield from human plasma by DEAE cellulose, arginyl-triazinyl-aminododecyl-agarose, Cm-Sephadex C-50, and Sephadex G-150 chromatography. Isoelectric focusing of the purified proenzyme gave seven peaks, four major ones at pH 8.6, 8.8, 9.1, and 9.3; and three others at pH 7.9, 8.3, and 9.5. The same IEF profile was obtained from plasma of four individuals of three races and both sexes and from three plasma pools, and was not altered by using diisopropyl fluorophosphate, benzamidine, or EDTA during fractionation. Each major IEF form contained Mr = 88,000 (prekallikrein I) and Mr = 85,000 (prekallikrein II) species, in increasing ratios of I:II from about 20:1 in prekallikrein 8.6 (prekallikrein with pI 8.6) to 1:1 in prekallikrein 9.3. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the four zymogens after activation by Hageman factor fragment and reduction gave an Mr = 53,000 H-chain and two L-chains, LI (Mr = 40,000) and LII (Mr = 37,000). Scanning the gels gave LI:LII ratios of 19:1, 5:1, 2:1, and 1:1 for prekallikreins 8.6, 8.8, 9.1, and 9.3, respectively, corresponding to the prekallikrein I:II ratios. The H-chain in turn was split into Mr = 33,000 and 20,000 chains, presumably by autolysis, because the cleavage was prevented by soybean trypsin inhibitor. Each major kallikrein had a pI 0.1-0.2 lower than its zymogen, but the same LI:LII ratio. The four kallikreins were indistinguishable kinetically with human plasma high molecular weight kininogen and 15 synthetic substrates, and in correcting the activated partial thromboplastin time of prekallikrein-deficient (Fletcher) plasma. PMID- 3843839 TI - Tumor-specific, hypomodified phenylalanyl-tRNA is utilized in translation in preference to the fully modified isoacceptor of normal cells. AB - Phenylalanine transfer RNA (tRNAPhe) of mammalian tissues contains the hypermodified guanine derivative Y (Wye) adjacent to the 3'-end of the anticodon and two O-methylated bases in the 5' portion of the anticodon loop. These positions are hypomodified in a variety of tumor cells including a mouse neuroblastoma. The normal and tumor-specific Phe-tRNAPhe iso-acceptors were prepared from mouse liver and mouse neuroblastoma cells and compared for their activity in incorporating phenylalanine into each phenylalanine site of rabbit globin in a reticulocyte cell-free protein synthesizing system. The hypomodified Phe-tRNAPhe of neuroblastoma cells is generally preferred to the fully modified tRNAPhe of liver in globin synthesis by about 15%. This preference is the same in the translation of both phenylalanine codons, UUC and UUU, but the ratios of incorporation by the Phe-tRNAPhe species vary from site to site within a 2-fold range. Only 2 of 16 phenylalanine residues are donated preferentially by the fully modified Phe-tRNAPhe. One such residue occurs in beta-42, the second of two tandem phenylalanine residues (both encoded by UUC), while the hypomodified isoacceptor is preferred in translation of the first residue. This result indicates that the translation of tandem residues is particularly affected by the tRNAs available. Since the tumor-specific hypomodified Phe-tRNAPhe is generally utilized preferntially, it appears that the bulky Y base and/or other modifications of normal tRNAPhe may modulate protein synthesis and that tumor cells may achieve a growth advantage if their tRNAPhe is hypomodified. PMID- 3843841 TI - Processing of precursor tRNAs in Drosophila. Processing of the 3' end involves an endonucleolytic cleavage and occurs after 5' end maturation. AB - Transfer RNA biosynthesis is a complex process which includes size trimming and nucleotide modification of an initial tRNA precursor. We have examined the temporal order and the nature of tRNA processing events in a Drosophila in vitro transcription/processing system using Drosophila tRNA genes as templates. RNA sequence analysis of processing products indicates that processing at both 5' and 3' ends occurs by endonucleolytic cleavage. The time course of processing of an initial tRNA precursor to mature tRNA reveals that trimming at the 5' end precedes 3' end maturation. PMID- 3843842 TI - Nursing algorithms. AB - The search for creative approaches to staffing never ceases. What is correct staffing planning? How do you achieve control over your staffing budget? How do you justify your budget to the hospital's financial officer? This article presents one hospital's modeling technique for projecting labor component budgets, establishing a flexible staffing assignment system, and instituting reporting systems for control. PMID- 3843843 TI - Creating a climate for excellence. AB - Some people are motivated to achieve in a manner consistent with the goals of their organization while others pursue individual goals. The attitudes people hold determine their behavior. Therefore, the manager is charged with creating an environment that fosters employee commitment to organizational goals. To create a climate for achievement, managers must recognize that all employees want recognition. Employees perform more effectively when they understand the goals of the organization, know what is expected of them, and are part of a system that includes feedback and reinforcement. Generally, people perform more effectively in an environment with minimal threat and punishment; individual responsibility should be encouraged, rewards based on results, and a climate of trust and open communication should prevail. PMID- 3843844 TI - A clinical nurse specialist in a line management position. AB - The authors describe their experiences utilizing a clinical nurse specialist in a middle management role in an organizational framework to support primary nursing. They describe the original design and planning of the organizational model 12 years ago, the administrative supports that have been added in the intervening years, and how professional and administrative authority are integrated by the clinical nurse specialist in a line position. PMID- 3843845 TI - Managing staff cutbacks. AB - This article describes practical steps in managing organizational retrenchment in nursing. The authors examine the following steps in the process: determining the cutback need, figuring the cuts, implementing the cutback plan, managing the feelings of loss, and achieving a new stability. PMID- 3843846 TI - Communicating personal power through nonverbal behavior. PMID- 3843847 TI - Mentor matching. PMID- 3843848 TI - Study designs: matching form with purpose. PMID- 3843849 TI - Control of methicillin-resistant Staphylococcus aureus (MRSA) in an Australian metropolitan teaching hospital complex. AB - In April 1982, a patient infected with methicillin-resistant Staphylococcus aureus (MRSA) was transferred to the Royal Perth Hospital from the Royal Darwin Hospital. Within three months, 19 patients and four staff members had become infected or colonized with MRSA. The outbreak was terminated only after all colonized inpatients were transferred to a separate isolation unit. After the outbreak, all new patients and new employees who had been in hospitals outside Western Australia in the previous 12 months were screened. From June 1, 1982, to June 30, 1984, 28 of the 649 patients (4.3%) screened on admission to the Royal Perth Hospital were found to be harbouring MRSA. During the same period only one of the 468 persons (0.2%) screened on application for employment at the Hospital was found to be colonized with MRSA. Since the policy of screening new patients and staff from hospitals outside Western Australia was introduced, no serious outbreak of MRSA has occurred. PMID- 3843850 TI - Genetics and epidemiology of methicillin-resistant Staphylococcus aureus isolated in a Western Australian hospital. AB - Strains of methicillin-resistant Staphylococcus aureus (MRSA) isolated in the Royal Perth Hospital (RPH) in Western Australia have been analysed genetically and three main types were characterized: (i) strains similar to those isolated in Europe before 1973. These strains caused small outbreaks in the RPH during the period 1966-1974, but have not been isolated in recent years, except from one patient with reactivation of osteomyelitis after 16 years; (ii) strains of the type prevalent in eastern and northern Australia, one of which caused a difficult to-control outbreak in the RPH in 1982. Strains of this type have previously been isolated only from patients who had been in hospitals in eastern and northern Australia, but recently were isolated also from other patients--which indicates that this type of MRSA is now present in the Western Australian community; and (iii) strains, which are genetically different from either of the above two types, were isolated from patients who had been in hospitals in Southeast Asia, but have not yet caused an outbreak in the RPH. PMID- 3843851 TI - MRSA revisited. PMID- 3843852 TI - An eternal flame. PMID- 3843853 TI - Determining priorities for the multiple trauma patient (nursing grand rounds). PMID- 3843854 TI - Action stat! Dislodged trach tube. PMID- 3843855 TI - Assessing heart sounds. PMID- 3843856 TI - Should you trust automatic blood pressure monitors? PMID- 3843857 TI - What to expect when your patient's scheduled for mitral valve replacement. PMID- 3843858 TI - Administering glucagon in an emergency. PMID- 3843859 TI - The ins & outs of informed consent. PMID- 3843860 TI - How to take charge when you're put in in charge. PMID- 3843861 TI - Test yourself. Do you know all your legal risk? PMID- 3843862 TI - Understanding the law: organ donation. PMID- 3843863 TI - Easing the family's pain: organ donation. PMID- 3843864 TI - Behavioral changes in an elderly, dehydrated man. What's wrong with this patient? PMID- 3843865 TI - Dr. Cornwall was obsessed with A.I.D.S. PMID- 3843866 TI - Using a local anesthetic for I.V. insertion: boon or bane? PMID- 3843867 TI - Shock: detecting it soon enough to save your patient: 9 more fast refreshers. PMID- 3843868 TI - The demanding patient. PMID- 3843869 TI - The nurse as a professional: gaining the respect we deserve. PMID- 3843870 TI - When ethics clash: helping patients caught between religion and medicine. PMID- 3843871 TI - 7 tips to make you a better leader. PMID- 3843872 TI - When can patients give informed consent? PMID- 3843874 TI - A description of nurse practitioners' practice in occupational health settings. PMID- 3843873 TI - Rehabilitation assessment: a practical guide for the occupational health nurse. PMID- 3843876 TI - Occupational health nursing--a twofold challenge. PMID- 3843875 TI - The influence of a master's degree on salary levels among occupational health nurses. PMID- 3843877 TI - Hypothenar hammer syndrome: a commonly undetected occupational hazard. PMID- 3843878 TI - Powerlessness among occupational health nurses. PMID- 3843879 TI - Hospital occupational health: a prescription for change. PMID- 3843880 TI - Occupational health in developing countries and the status of occupational health nursing. PMID- 3843881 TI - Research in the mainstream of occupational health nursing. PMID- 3843882 TI - Evaluation of health promotion. PMID- 3843884 TI - Nursing Mirror research forum. Barriers to sympathy. PMID- 3843883 TI - Nursing Mirror research forum. Understanding emotional need. PMID- 3843885 TI - Listen, learn and act. PMID- 3843886 TI - Nursing-images and reality. Marsden lecture. PMID- 3843887 TI - Areas of dispute. PMID- 3843888 TI - Manpower planning: art or science? PMID- 3843889 TI - Swallow your pride, or lose your job? PMID- 3843890 TI - A day in bed. PMID- 3843891 TI - Breaking the ice. PMID- 3843892 TI - Community/out-patient nursing. 1. Smooth transition. PMID- 3843893 TI - Where there's life. PMID- 3843894 TI - New Year resolution: the rights of admission. PMID- 3843895 TI - Heroin: facts and comparisons. PMID- 3843896 TI - Analgesic consultation. PMID- 3843897 TI - When a nurse doesn't fit the job. PMID- 3843898 TI - Why research and nursing belong together. PMID- 3843899 TI - How I renewed my commitment to nursing. PMID- 3843900 TI - What to do after CPR. PMID- 3843901 TI - 119 days in the ICU: nursing Buster back from the brink. PMID- 3843902 TI - Pain; portable relief for terminal patients. PMID- 3843903 TI - You can manage chest tubes confidently. PMID- 3843905 TI - Dealing with hypothermia and frostbite. PMID- 3843904 TI - The frightening cost of ectopic pregnancy. PMID- 3843906 TI - Controlling the damage of frostbite. PMID- 3843907 TI - Do nurses get special treatment when they're patients? PMID- 3843908 TI - Special treatment? Who needs it! PMID- 3843909 TI - What you can learn from the platelet count. PMID- 3843910 TI - Minimizing sensory alterations of the unplanned cesarean delivery. PMID- 3843911 TI - Maintenance of sensory equilibrium for the critical care nurse. PMID- 3843913 TI - Effective communication as an intervention for sensory deprivation in the elderly client. PMID- 3843912 TI - Prevention of sensory deprivation for the COPD victim's spouse. PMID- 3843914 TI - Sleep deprivation or postpartum blues? PMID- 3843915 TI - Nursing single men's hostel. PMID- 3843916 TI - Seat belt legislation. PMID- 3843917 TI - Why choose nursing? PMID- 3843918 TI - When it isn't life or death. PMID- 3843919 TI - Inspiring hope. PMID- 3843920 TI - Burn care. The rehab guide. PMID- 3843921 TI - Nurses speak out on patients and drug regimens. PMID- 3843922 TI - Cardiac catheterization of the neonate. PMID- 3843923 TI - A fair prospect for infection control. PMID- 3843925 TI - Nurses--the final guardians. PMID- 3843924 TI - IOM Committee releases NIH study report. PMID- 3843926 TI - A new elastase inhibitor from Streptococcus pneumoniae protects against acute lung injury induced by neutrophil granules. AB - A neutrophil elastase-inhibitor isolated from lysed pneumococcal cells, as well as trypsin-digest peptides derived from this factor, were tested for their ability to suppress acute lung injury in mice treated with human neutrophil granule extracts. Injury was assessed by measuring pulmonary sequestration of circulating 125I-labeled albumin, lung water, and lung hemoglobin. Both the native inhibitor and the tryptic-peptides gave good protection when preincubated with granule extract for brief periods before intrapulmonary instillation. Lesser, but still significant, protection was observed in the absence of preincubation. Protection was not simply due to addition of exogenous proteins to the granule extract because substitution of goat immunoglobulin for pneumococcal fraction was ineffective. These results suggest that pneumococcal elastase inhibitors, recently described by us, may play a role in minimizing lung injury during pneumococcal pneumonia. PMID- 3843927 TI - Vanadate-dependent NADH oxidation in microsomal membranes of sugar beet. AB - Microsomal membranes isolated from sugar beet (Beta vulgaris L. var. GWD-2) storage tissue were found to contain a Na3VO4-dependent system for the oxidation of NADH. The system was demonstrated to be enzymatic in nature and specific for Na3VO4. Maximal Na3VO4-dependent NADH oxidation was observed at pH 6.5, when Na3VO4 was present at 200 microM and when NADH was present at 100 microM. The oxidation activity was insensitive to rotenone and antimycin A but was inhibited by NaN3, NaCN, and quinacrine. Sodium vanadate-dependent NADH oxidation occurred with a concomitant uptake of O2 from the assay solution. Both NADH oxidation and O2 consumption were dependent upon the presence of Na3VO4, inhibited by manganese, and preferred NADH to NADPH. Catalase prevented Na3VO4-dependent O2 consumption but accelerated NADH oxidation. The effects of manganese and catalase suggest that superoxide anion and hydrogen peroxide may be involved in this process. While it is unclear as to the physiological significance of Na3VO4 dependent NADH oxidation in plant cells, the presence of this system indicates that caution must be exercised when coupled ATPase assays depending upon NADH oxidation are used with plant membranes in the presence of Na3VO4. PMID- 3843928 TI - Isolation and characterization of rat plasma glandular kallikrein. AB - A method has been developed to purify glandular kallikrein present in rat plasma by using Sepharose-Aprotinin affinity chromatography and elution of the enzyme with p-aminobenzamidine. The isolated enzyme liberated kinins from kininogen II of low molecular weight (sp. act. 14 ng kinins/min X mg) and p-nitroaniline (pNA) from the substrate S-2266 (sp. act. 1.23 nmoles pNA/min X mg); it was inhibited by aprotinin, benzamidine and rat urinary antikallikrein antibody but not by ovomucoid. In polyacrylamide gel electrophoresis, the enzymatic activities of the preparation were associated with two light protein bands of molecular weights equal to that of urinary kallikrein (35,000 daltons). Using this method, the recovery of [125I]kallikrein added to the plasma was 82-88%. The concentration of the enzyme in normal rat plasma was equivalent to 6.1 +/- 2.1 (S.D.) ng kallikrein/ml. The mean value found in nephrectomized rats was 20.0 +/- 6.3 (S.D.) ng kallikrein/ml. This increment was highly significant (P less than 0.001). Our results confirm the presence of glandular kallikrein in plasma which had been detected by other methods; they also demonstrate that the material purified from plasma is enzymatically active, suggesting that kallikrein may play a biological role in the control of blood circulation. PMID- 3843929 TI - Binding of Cerebratulus cytolysin A-III to human erythrocyte membranes. AB - Binding of Cerebratulus lacteus cytolysin A-III to intact human erythrocytes and erythrocyte membranes has been investigated. Binding to ghosts is essentially complete within 2.5 min of mixing which is slightly faster than the rate of hemolysis measured with intact cells. Approximately 4 X 10(4) binding sites per cell, exhibiting a K 0.5 of 0.7 microM exist; this compares with 50% hematocrit of about 0.3 microM for A-III. Binding is absent in ghosts extracted with Nonidet P-40, but is unaffected by pretreatment of ghosts with either trypsin or elastase. PMID- 3843930 TI - Medical devices: where should learning begin? PMID- 3843931 TI - Primary health care team: more nurses needed. PMID- 3843932 TI - Cot deaths: keeping watch. PMID- 3843933 TI - The nursing process: making it work. PMID- 3843934 TI - The nursing process. Delivering the goods. PMID- 3843936 TI - Leg ulcers. PMID- 3843935 TI - Bard nursing award: cooperation through core courses. PMID- 3843937 TI - Matters for concern: if divorce is inevitable, plan for the future. PMID- 3843938 TI - Practice nurses. Training the 5000. PMID- 3843939 TI - Nursing the critically ill child in an adult ICU. PMID- 3843941 TI - Preventing ventricular dysrhythmia following myocardial infarction. PMID- 3843940 TI - Preventing gastric wrap complications. PMID- 3843943 TI - Dealing with unsafe requests. PMID- 3843942 TI - Do not resuscitate: when nurses' duties conflict with patients' rights. PMID- 3843944 TI - Dealing with a dilemma. PMID- 3843945 TI - Timeout: facing death in the ICU. PMID- 3843946 TI - The critical care to home care program: a career opportunity. PMID- 3843947 TI - Reducing family hostility. PMID- 3843948 TI - Aiding the person who is visually impaired from diabetes. PMID- 3843949 TI - The National Task Force on Diabetes and Blindness. PMID- 3843950 TI - Who said TV is just for entertainment. PMID- 3843951 TI - Video teacher: peer instruction. PMID- 3843952 TI - Reagent strip performance as evaluated by a meter. PMID- 3843953 TI - Ethnic tailoring improves dietary compliance. PMID- 3843954 TI - Auckland Diabetes Centre. PMID- 3843956 TI - Individualizing the nutrition plan for the person with diabetes. PMID- 3843955 TI - A team approach to ... dietary problems of an adolescent. PMID- 3843957 TI - [Antimicrobial prevention of bacterial endocarditis]. PMID- 3843958 TI - Pulmonary function in elastase-treated guinea pigs and rats exposed to ammonium sulfate or ammonium nitrate aerosols. AB - Three weeks following intratracheal instillations of elastase dissolved in saline, or saline alone, guinea pigs and rats were exposed for 5 or 20 days, 6 hr/day, 5 days/week to filtered room air, 1 mg/m3 ammonium sulfate [NH4)2SO4) or 1 mg/m3 ammonium nitrate (NH4NO3) aerosols. Pulmonary function evaluations conducted in guinea pigs showed no detrimental effects of (NH4)2SO4 or NH4NO3 exposure and very little effect of elastase treatment. Lung function changes in elastase-treated rats were consistent with a condition of experimentally induced pulmonary emphysema. Rats exposed to NH4NO3 aerosols showed no consistent exposure-related changes. Compared with air-exposed animals, rats exposed to (NH4)2SO4 aerosols had increased values of residual volume and functional residual capacity and decreased slope of single-breath N2 washout curves. We conclude that elastase treatment had no significant effect on lung function changes resulting from inhalation of (NH4)2SO4 aerosols. Lung function was more affected by (NH4)2SO4 exposure than by NH4NO3 exposure, and lung function changes were more pronounced in rats than in guinea pigs. PMID- 3843959 TI - Regulation of the activity of eukaryotic peptide elongation factor 1 by autocatalytic phosphorylation. AB - Highly purified peptide elongation factor 1 from rabbit reticulocytes liberates the terminal phosphate from [gamma-32P]GTP and incorporates it into its own protein. Approximately one phosphate residue becomes bound by one molecule of the factor. Only the eEF-1 alpha subunit of the factor (Mr 53 000) becomes phosphorylated as revealed by polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate followed by autoradiography and by the incubation of [gamma-32P]GTP with individual subunits of the elongation factor separated by chromatofocusing in the presence of 5 M urea. The phosphorylation also takes place, though to a lesser extent, if the factor is incubated with Na2H32PO4, probably due to the presence of endogenous GTP bound in the molecule of the factor. The content of endogenous GTP in various factor preparations was 0.21 0.43 mol/mol factor. Phosphorylation of the peptide elongation factor is ribosome independent, acid-labile and apparently autocatalytic since no other proteins are required for this reaction. Preincubation of the factor with GTP or with inorganic phosphate results in the phosphorylation of the factor and is followed by an enhanced binding of phenylalanyl-tRNA to 80S ribosomes in the presence of poly(U). This is accompanied by a dephosphorylation of the factor protein and thus the reversible autophosphorylation of the factor apparently activates its binding site for aminoacyl-tRNA. This is supported by the observation that sodium fluoride, which inhibits the dephosphorylation of the factor, blocks the factor catalyzed binding of aminoacyl-tRNA to ribosomes. The incorporation of phosphate into factor protein also inhibits the formation of an eEF-1 X GDP complex, which is inactive in protein synthesis. Thus GDP liberated by the GTPase activity of the factor cannot affect its binding site for aminoacyl-tRNA. This may be the other reason for the enhanced activity of the phosphorylated factor. The autocatalytic GTP-dependent phosphorylation of the peptide elongation factor 1 apparently modifies its function and may thus play a regulatory role in protein synthesis. PMID- 3843960 TI - The role of cholesteryl 14-methylhexadecanoate in the function of eukaryotic peptide elongation factor 1. AB - The binding of [3H]cholesteryl 14-methylhexadecanoate by a highly purified peptide elongation factor 1 from rabbit reticulocytes is significantly enhanced by GTP and CTP, much less by guanosine 5'-[beta, gamma-methylene]-triphosphate and not at all by ATP or UTP. Removal of endogenous cholesteryl 14 methylhexadecanoate present in the molecule of the factor [Hradec, J. et al. (1971) Biochem. J. 123, 959-966] by digestion with immobilized cholesterol esterase resulted in an almost complete loss of GTPase activity and this could be restored to nearly normal values by the addition of the ester. The same holds true for the GTP-dependent autophosphorylation of the protein-synthesis factor. Cholesteryl 14-methylhexadecanoate was bound only by the beta subunit of the factor. Addition of the alpha subunit, which was inactive on its own, stimulated the binding of the ester to the beta subunit in a sigmoid dependence. The binding of the ester was significantly stimulated by aminoacyl-tRNA but this effect was fully abolished by sodium fluoride, indicating a relation of cholesteryl 14 methylhexadecanoate to the dephosphorylation of the peptide elongation factor. Treatment of the factor with cholesterol esterase decreased its activity in the poly(U)-dependent binding of phenylalanyl-tRNA to ribosome and this activity was again restored by the addition of cholesteryl 14-methylhexadecanoate. The ester thus interacts with the GTP-dependent autophosphorylation of peptide elongation factor 1 and in this way modulates the activity of the factor. A putative scheme is presented explaining the mode of action of cholesteryl 14-methylhexadecanoate. PMID- 3843961 TI - Pulmonary vascular injury in pancreatitis: evidence for a major role played by pancreatic elastase. AB - Using an experimental model of pancreatitis in the rat, the role of trypsin and elastase in mediating lung vascular injury in this condition was examined. The induction of pancreatitis by injection of sodium cholate in the pancreas resulted in a significant decrease in serum trypsin inhibitory capacity, and in a complete saturation of serum elastase inhibitory capacity matched by the appearance of endothelial injury of pulmonary capillaries and edema formation. The complete lack of serum elastase inhibitory capacity was associated with the presence of elastase activity in serum and bronchoalveolar lavage (BAL) fluids. The pretreatment of animals with N-furoyl saccharin (a potent inhibitor of many serine proteinases) prevented lung capillary injury and the imbalance of serum proteinase-anti-proteinase activities as well as the appearance of any elastolytic activity in serum and BAL fluids. These findings which clearly demonstrate the protease dependence of the pulmonary vascular injury in our experimental model, strongly suggested a major role for elastase(s). The suppression, in the experimental model, of the serum elastase inhibitory capacity by using chloramine-T resulted in an earlier onset of lung vascular damage, a marked worsening of pulmonary lesions, and an increase of elastolytic levels in serum and BAL fluids. Furthermore the physical properties of the protein molecule with enzyme activity detected in BAL fluids were consistent with those of rat pancreatic elastase. The reported data strongly support the hypothesis that pancreatic elastase plays a major role in the development of pulmonary vascular injury after acute pancreatitis. PMID- 3843962 TI - The vasoactive proteins in human urine. AB - We have purified vasoactive polypeptides from the urine of normotensive humans by gel filtration on Sephadex G150 superfine ionic exchange chromatography on DEAE cellulose and isoelectric focusing in polyacrylamide gels using a pharmalyte pH range of 2.5-5.0. The purified polypeptide fraction yielded four bands by isoelectric focusing with isoelectric points at pH 4.15, 4.05, 3.9 and 3.8. On dodecyl sulphate/polyacrylamide gel electrophoresis (page) two bands appeared, one small band with a Mr of 29 000 and one broad band ranging from Mr 49 000 to Mr 42 500. The polypeptides lower the blood pressure of rabbits in a bioassay and cleave D-valyl-L-leucyl-L-arginine-4-nitroanilide with a specific activity comparable to that of kallikrein. PMID- 3843963 TI - Nursing: a woman's field. PMID- 3843965 TI - The International Council of Nurses. PMID- 3843964 TI - The world of nursing student associations. PMID- 3843966 TI - An international experience. PMID- 3843967 TI - International nurses in action. PMID- 3843968 TI - Nurses' image: early perceptions. PMID- 3843969 TI - A comparison of ranitidine with cimetidine in short term treatment of duodenal ulcer. PMID- 3843970 TI - Clinical profile of irritable bowel syndrome. PMID- 3843971 TI - Ulcerative colitis--prevalence in socio-economic groups. PMID- 3843973 TI - Portal hypertension in India. PMID- 3843972 TI - Endoscopic sphincterotomy in the management of obstructive biliary tract diseases -a preliminary report. PMID- 3843974 TI - Achalasia cardia in infancy--a case report. PMID- 3843975 TI - Primary omental torsion presenting as acute peritonitis. PMID- 3843976 TI - Ranitidine vs cimetidine in the treatment of duodenal ulcer. PMID- 3843977 TI - Polypoid lipohyperplasia of the ileocaecal valve in a young male. PMID- 3843978 TI - Current status of endoscopic sclerotherapy. PMID- 3843979 TI - [Grounds for the existence of pornography]. PMID- 3843981 TI - [Reflections on institutional violence]. PMID- 3843980 TI - [The abused wife in a sexist society]. PMID- 3843982 TI - [Sound teeth and gums throughout the maternity cycle. Why not?]. PMID- 3843983 TI - [Menopause: a holistic approach]. PMID- 3843984 TI - [Patient care planning in a nursing home]. PMID- 3843985 TI - [Point blank: suicide]. PMID- 3843987 TI - [OIIQ takes steps towards disaffiliation from CNA]. PMID- 3843986 TI - [Services for better countering cancer]. PMID- 3843988 TI - Abbreviated surveillance of nosocomial urinary tract infections: a new approach. AB - An abbreviated method for the surveillance of nosocomial urinary tract infection is described. Combining desirable features of both active and passive surveillance, this new method involves concurrent review of microbiology reports. Compared to traditional active surveillance methods which require review of individual patient charts, the abbreviated method requires only one-fifth the time commitment while maintaining a 98% sensitivity. Although some degree of overestimation is inherent in this method, the primary goals of surveillance- monitoring infection rates and identifying clusters of infection--should be preserved. PMID- 3843989 TI - A multi-hospital hepatitis B vaccine program: prevalence of antibody and acceptance of vaccination among high-risk hospital employees. AB - In July 1982, five Hartford hospitals embarked on a joint hospital-sponsored program to immunize high-risk employees against hepatitis B virus (HBV). The program included a questionnaire to characterize relative risk, serology for anti HBs, vaccination and a follow-up survey of vaccine non-recipients. Of 2,065 employees who were considered to be at high-risk for infection with HBV, 1,894 (91.7%) responded to the screening questionnaire and 1,279 (67.5%) were tested for anti-HBs serology. The prevalence of antibody varied from hospital to hospital; the highest prevalence (10.9%) was observed at one of the urban university-affiliated community hospitals and the lowest prevalence (4.1%) was reported from the smaller, rural hospital. The prevalence of antibody also varied greatly within the high-risk groups; the highest prevalence of antibody was seen among surgical house officers (15%). The rate of acceptance of vaccine among hospitals ranged from 57.5% to 23.7%. Reasons for vaccine non-acceptance included fear of as yet unknown side effects, perceived low risk of hepatitis acquisition and possible effects on present or future pregnancies. Our experience illustrates some of the epidemiologic and practical aspects that must be addressed in administering a hospital-based HBV vaccine program. Among the five hospitals, we saw marked inter- and intra-hospital variations in the prevalence of anti-HBs among high-risk employees. More significantly, we observed unexpectedly low rates of vaccine acceptance among high-risk personnel. PMID- 3843990 TI - Needle punctures--documentation and incidence rate calculation. PMID- 3843991 TI - Air hand dryer or paper towel dispensers? PMID- 3843992 TI - The merits of alcohol as a skin degerming agent. PMID- 3843993 TI - Disposable needle and syringe containers. AB - Needle/syringe disposal in health care facilities should comply with current CDC, JCAH, and EPA recommendations. Most state laws require that needle/syringes be rendered inoperable for future use. However, this does not necessarily mean that needles have to be broken or bent. Needles/syringes that are placed in a puncture and leak-proof container that are eventually autoclaved or incinerated should satisfy the intent of these regulations. It must be emphasized that currently no data are available from controlled studies examining the effect, if any, of these devices on the incidence of needle-transmissible infections. However, common sense dictates that the new disposable containers are easier and safer to use and therefore should contribute to decreasing the incidence of needle puncture accidents among health care workers. A comprehensive program aimed at minimizing needle-stick accidents should address not only disposal devices and their accessibility at key locations, but also periodic inservice education. PMID- 3843994 TI - Infection control--a progress report. PMID- 3843995 TI - Aberrant ventricular conduction during atrial fibrillation. PMID- 3843996 TI - Pacemaker syndrome. PMID- 3843997 TI - Endotracheal tube suctioning/manual hyperventilation procedure on patients with severe closed head injuries. PMID- 3843998 TI - The effects of oxygen and hyperinflation on arterial oxygen tension after endotracheal suctioning. AB - The effects of hyperinflation and increasing the FIO2 to 1.0 on PaO2 after endotracheal suctioning were examined in 28 patients after cardiac surgery. The changes in PaO2 immediately after and at 5- and 10-minutes after suctioning were compared with control values. Hyperinflation at the patient's baseline FIO2 produced a mean decrease in PaO2 of 18 mm Hg immediately after suctioning in over 75% of the sample. Preoxygenation with an increase in the ventilator FIO2 to 1.0 produced a mean increase in PaO2 of 48 mm Hg in 75% of the sample. Delivering preoxygenation by hyperinflation provided greater protection for all patients with a mean increase in PaO2 of 100 mm Hg. No statistically significant differences existed between the 5- and 10-minute PaO2 value and the control PaO2 values for any of the procedures. Experimental hyperinflation was aborted in two patients who experienced significant hypotension in association with the hyperinflation. The hypotension was transient, with arterial blood pressure immediately returning to baseline values on termination of the experimental hyperinflation. In conclusion, 100% oxygen administered by hyperinflation for 1 minute before and after endotracheal suctioning protects patients after cardiac surgery from a fall in PaO2. Because hyperinflation can cause alterations in arterial blood pressure and heart rate, these vital signs should be visually monitored during the endotracheal suctioning procedure. PMID- 3843999 TI - Brief psychotherapy after survival from cardiac arrest. PMID- 3844000 TI - Nurse-patient interaction in the intensive care unit. AB - Patients in the ICU, especially those who are unable to communicate verbally, need sensitive and individualized communication to prevent feelings of isolation and alienation and to promote continued socialization throughout their hospitalization and return to the community. The results of this study indicate that the quality and effect of the interactions between nurses and intubated patients in the ICU require further study to delineate the factors that contribute to the effective or ineffective communication. We believe that the Categories of Nurse-Patient Interaction that was developed for this study is useful and practical measure of nurse-patient interaction in the ICU. PMID- 3844001 TI - Real nurses may not always fill up the flow sheets. PMID- 3844002 TI - Adherence and self-care. PMID- 3844003 TI - The stress, social support, and burnout of critical care nurses: the results of research. PMID- 3844004 TI - The effects of body position on oxygenation. PMID- 3844005 TI - Cold agglutinin syndrome: nursing management. AB - Although cold agglutinin syndrome rarely results in an acute hemolytic episode, consideration should be given to the potential problems that exist when cold agglutinins are present. This autoimmune response may be present in an acute or chronic form. Viral and bacterial infections, especially mycoplasma pneumonia, may precipitate acute CAS, whereas, chronic CAS may be idiopathic or associated with malignant lymphoma. Both acute and chronic CAS may result in RBC hemolysis as the IgM antibody reacts with the I-antigen on the RBC, setting the complement cascade into action. Therefore, screening for cold agglutinins should be done before any procedure that would introduce cold fluids into the body, e.g., blood transfusions and cold cardioplegia during coronary artery bypass surgery. PMID- 3844006 TI - The patient with lupus nephritis: a nursing perspective. PMID- 3844007 TI - Sterility of prefilled thermodilution cardiac output syringes maintained at room and ice temperatures. PMID- 3844008 TI - Adenocarcinoma of the lung presenting with pericardial tamponade: report of a case and review of the literature. AB - In a patient with cancer, a diagnosis of cardiac tamponade should be considered when there is dyspnea, cough, thready pulse or pulsus paradoxus, low systolic blood pressure, engorged neck veins, an enlarged cardiac silhouette, and total or ventricular electrical alternans. Immediate pericardiocentesis is indicated in such patients to avoid the risk of sudden death. A pericardial window should be created for more prolonged palliation of cardiac tamponade. Cytologic examination of the pericardial fluid often reveals malignant or highly suspect cells. Metastatic carcinomas from the lung and breast are the most common tumors that involve the heart when they spread in a retrograde fashion through the cardiac lymphatic system. Total pericardiectomy for the treatment of cardiac tamponade that is due to cancer is not generally advisable. Radiation therapy in the cardiac area with or without systemic chemotherapy is effective in decreasing the amount and the recurrence of neoplastic pericardial effusion. PMID- 3844009 TI - A respiratory profile from a hand-held computer. AB - A pocket computer would be of great use to the clinician, both in and out of an intensive care unit setting. Specialized, smaller, less expensive calculators that are preprogrammed with cardiorespiratory and other profiles will appear on the market and may become as useful a clinical aid as the stethoscope. This article describes a simple respiratory profile that will help the clinician logically approach a respiratory problem. PMID- 3844010 TI - Monitoring urinary bladder temperature. AB - We evaluated bladder, rectal, and esophageal temperatures compared with nasopharyngeal temperatures in 12 patients who underwent cardiac surgery that required CPB. Changes in bladder temperature lagged behind those of esophageal and nasopharyngeal temperature during rapid cooling and rewarming. Changes in rectal temperature were the slowest. Bladder and rectal temperatures were similar after surgery. Monitoring bladder temperature represents the core temperature in a steady state. PMID- 3844011 TI - Bradycardia and hypotension after propranolol HCl and verapamil. PMID- 3844012 TI - Cooperativity in low-affinity Mg2+ binding to tRNA. AB - The Pb2+-catalyzed cleavage of tRNAPhe has been used to probe the effect of Na+ and Mg2+ binding to tRNA. Na+ is a noncompetitive inhibitor of the Pb2+-catalyzed cleavage. Millimolar Mg2+ is also a noncompetitive inhibitor. Analysis of the Mg2+ data show that at least two sites are involved in binding and that there is an interaction between the sites (cooperativity). Low-affinity Mg2+ binding is thus different from "weak" and "strong" Mg2+ binding to tRNA characterized previously. We postulate that the alterations induced by low-affinity Mg2+ binding in tRNA mimic to some extent those brought about in RNA by the interaction with a protein factor and that at appropriate [Mg2+] the whole structure of tRNA is able to respond in a concerted way to a signal from the environment such as aminoacylation or codon binding. PMID- 3844013 TI - Functional analysis of fractionated Drosophila Kc cell tRNA gene transcription components. AB - We have previously described the partial purification of RNA polymerase III transcription components from Drosophila Kc cell extracts (Burke, D. J., Schaack, J., Sharp, S., and Soll, D. (1983) J. Biol. Chem. 258, 15224-15231). Here we report further physical and functional analysis of the two transcription-required fractions designated as factors B and C. Using stable complex formation competition experiments with ordered addition of these transcription components, we have shown that factor C associates rapidly with the tRNA gene, but will not form a stable complex with the DNA in the absence of factor B. Reconstitution experiments of the individual Drosophila Kc cell factors with those from human HeLa cells demonstrated that the HeLa factor B, combined with Kc factor C, can form active transcription complexes. These now exhibit a property of the Drosophila system, a strong dependence on sequences in the 5'-flanking regions of tRNA genes. However, the Kc factor B (which has an apparent molecular weight of 260,000 as judged by gel filtration analysis) is not compatible with the HeLa factor C. These results, together with the isolation of a large complex containing all necessary transcription components, emphasize the importance of the interaction of these components for both stable complex formation and transcription initiation. PMID- 3844014 TI - Entry of diphtheria toxin linked to concanavalin A into primate and murine cells. AB - Diphtheria toxin linked by a disulfide bridge to concanavalin A was highly toxic to HeLa S3 and Vero cells, as well as to murine L cells. The cells could be protected with alpha-methyl mannoside, indicating that the conjugate binds mainly through its concanavalin A moiety. Treatment of Vero cells with phospholipase C, TPA (12-O-tetradecanoylphorbol-13-acetate), and vanadate, which strongly reduce the ability of the cells to bind free diphtheria toxin, had little protective effect against the conjugate, whereas SITS (L-acetamido-4'-isothiocyano-stilbene 2,2'disulfonic acid), which inhibits diphtheria toxin binding, as well as the subsequent entry, protected Vero cells, but not L cells. Both types of cells are protected against the conjugate by NH4Cl and monensin, indicating that an acidified compartment is necessary for entry into the cytosol. Exposure of cells, bound with surface conjugate, to low pH induced entry of the toxin into Vero cells, but not into L Cells. Phospholipase C, TPA, and vanadate did not protect L cells against the conjugate. It is concluded that toxin in the conjugate enters L cells by a route which involves low pH, but which is not identical to that in Vero cells. PMID- 3844015 TI - The Kock continent ileal reservoir: an alternative to the conventional urostomy. PMID- 3844016 TI - Crises intervention techniques for the ET nurse. PMID- 3844017 TI - High-pressure wound irrigation. PMID- 3844018 TI - Myths and misconceptions of pressure sore management. PMID- 3844019 TI - The artificial urinary sphincter. PMID- 3844020 TI - Educating leaders in gerontology. Doctoral preparation for gerontological nursing. PMID- 3844021 TI - Do nurses stereotype the aged? PMID- 3844022 TI - Incontinence: defining the nursing role. PMID- 3844023 TI - They call it Alzheimer's disease. PMID- 3844024 TI - Day care for dementia patients. PMID- 3844025 TI - It's tournament time--dartball, that is! PMID- 3844026 TI - Beginning nursing students can change attitudes about the aged. PMID- 3844027 TI - Nurse-midwifery trends: some reflections. PMID- 3844028 TI - Quickening and auscultation of fetal heart tones as estimators of the gestational interval. A review. PMID- 3844030 TI - A pilot project for training traditional birth attendants. PMID- 3844029 TI - Management of delivery by United States certified nurse-midwives. PMID- 3844031 TI - Midwifery management of end-stage decelerations. PMID- 3844032 TI - Incorporation of a nurse-midwifery practice. PMID- 3844033 TI - The experience of menarche: an exploratory study. PMID- 3844034 TI - Amino acid derived latent isocyanates: irreversible inactivation of porcine pancreatic elastase and human leukocyte elastase. AB - Several amino acid derived azolides (I) have been synthesized and investigated for their inhibitory activity toward human leukocyte elastase and porcine pancreatic elastase. The inhibitory activity was found to be dependent on the nature of the precursor amino acid ester. Thus, compounds derived from L-valine methyl ester 3, L-norvaline methyl ester 5, DL-norleucine methyl ester 9, and L methionine methyl ester 10 were found to inhibit irreversibly both enzymes. Compound 10 was found to be a specific and selective inhibitor of human leukocyte elastase. In contrast to these, inhibitors derived from glycine methyl ester 1, D valine methyl ester 4, and D-norvaline methyl ester 6 were found to be inactive. The results of the present study show that latent isocyanates derived from appropriate amino acids can serve as selective inhibitors of serine proteases and are of potential pharmacological value. PMID- 3844035 TI - Elastase activity of Coccidioides immitis. AB - Twenty-two strains of Coccidioides immitis were tested for the ability to hydrolyse elastin. Screening assays with Czapek's or Tryptic Soy Agar supplemented with 0.5% elastin demonstrated that 21 strains (95%) were elastolytic. In broth cultures, elastase activity was induced by incorporation of insoluble elastin into the medium and induction was suppressed by supplementation with yeast extract. C. immitis appears to be unique amongst dimorphic fungal pathogens in its digestion of elastin. PMID- 3844036 TI - Effect of repeated high dose prophylaxis with amoxycillin on the resident oral flora of adult volunteers. AB - Healthy adult volunteers received either single or repeated 3-g doses of amoxycillin by mouth at weekly intervals on three occasions. The salivary flora of each volunteer was monitored before, during and up to 11 weeks after the final dose of antibiotic. Viable counts of anaerobic bacteria, streptococci and streptococci resistant to amoxycillin 2 mg/L and 40 mg/L were determined in samples of saliva. All 20 volunteers harboured low numbers of streptococci resistant to amoxycillin 2 mg/L (mean count = 6.57 X 10(3) cfu/ml of saliva) before administration of the antibiotic; much lower carriage rates (45%) were observed for bacteria resistant to amoxycillin 40 mg/L (mean count = 116 cfu/ml of saliva). Each dose of amoxycillin had a rapid but transient effect on the numbers of salivary bacteria. A placebo lacking the antibiotic had no effect. A single 3-g dose of amoxycillin had little or no effect on the numbers of resistant streptococci and, therefore, it was concluded that in patients at risk of infective endocarditis a second prophylactic dose would not be invalidated. The numbers of resistant streptococci increased significantly after the second and third doses of amoxycillin, and persisted for 4-7 weeks. Consequently, in at risk patients requiring repeated dental procedures liable to produce bacteraemia, either alternative antibiotic regimens should be used each time or intervals of at least 4 weeks should be left between treatment sessions. PMID- 3844037 TI - The Nd:YAG a knife without a blade. PMID- 3844038 TI - Make your own schematic eye. PMID- 3844039 TI - Saving time. Efficiency in the routine ophthalmic exam. PMID- 3844041 TI - Insight into keratometry. PMID- 3844040 TI - Adie's syndrome. PMID- 3844042 TI - Calculating intraocular lens power. PMID- 3844043 TI - Managing glaucoma using argon laser therapy. PMID- 3844044 TI - Inherited ocular disease in childhood. PMID- 3844046 TI - When your patients ask about nasty heartburn. PMID- 3844045 TI - Stillbirth. PMID- 3844047 TI - The enigma of cot death. PMID- 3844048 TI - Formal and informal support systems for mothers with newborn. PMID- 3844049 TI - Nursing and politics. Dichotomy or partnership. PMID- 3844050 TI - Renal filtration and catabolism of complement protein D. AB - Complement protein D, a serine protease participating in the formation of the C3 convertase of the alternative complement pathway, has the lowest molecular weight (23,750) and serum concentration of all complement proteins. In normal serum, D is the rate-limiting protease of the alternative pathway of complement activation. We report that the serum concentrations of D in 20 patients with chronic renal failure (mean +/- S.D., 0.42 +/- 0.28 mg per deciliter) and in 16 patients on long-term dialysis (1.53 +/- 0.39 mg per deciliter) were significantly higher (P less than 0.001) than in 22 healthy adults (0.18 +/- 0.04 mg per deciliter). In chronic renal failure the serum concentration of D correlated with that of creatinine (r = 0.75, P less than 0.001). The serum concentrations of D found in patients with renal failure reached and in some cases exceeded those at which the protease is no longer rate-limiting. Thus, enhanced activity of the alternative pathway of complement should be expected in patients with advanced renal failure. Urinary D was undetectable (less than 0.2 micrograms per deciliter) in 17 normal adults and either undetectable or below the concentration expected from the degree of proteinuria in 10 patients with nephrotic syndrome. However, in a patient with Fanconi's syndrome the urinary concentration of D (1.3 mg per deciliter) was an order of magnitude higher than the serum concentration, representing 0.5 per cent of the total protein. The urinary D in this patient had normal hemolytic activity, antigenicity, and size. These results indicate that D is filtered through the glomerular membrane and is probably catabolized in the proximal renal tubules. PMID- 3844051 TI - Specific expression of an elastase-human growth hormone fusion gene in pancreatic acinar cells of transgenic mice. AB - Transfection of genes into tissue culture cell lines has demonstrated that relatively short DNA sequences can allow expression of immunoglobulin, insulin and chymotrypsin genes in their appropriate cell types. A definitive test of cell specific gene expression, however, requires testing genes in every possible cell type, an experiment performed easily by introducing the gene in question into the germ line of an animal. Transfer of intact genes into mice has demonstrated that a mouse immunoglobulin kappa gene is expressed specifically in B lymphocytes, a rat elastase I gene is expressed specifically in pancreas and a chicken transferrin gene is expressed preferentially in liver. Mouse metallothionein growth hormone fusion genes introduced into mice are preferentially expressed in the liver, consistent with the expression of endogenous metallothionein genes, but initial experiments with beta-globin genes have not revealed proper regulation. To identify the DNA elements required for pancreas-specific expression of the rat elastase I gene, we joined the 5'-flanking region of this gene to the human growth hormone (hGH) structural gene and introduced the fusion gene into mice. Here we demonstrate that a fusion gene containing only 213 base pairs (bp) of elastase I gene sequence directs expression of hGH in pancreatic acinar cells. PMID- 3844052 TI - Regulation of advanced nursing practices: a commentary. PMID- 3844053 TI - Multi-institutional systems: the new arrangement. PMID- 3844054 TI - An approach to funding nursing continuing education conferences. PMID- 3844055 TI - Comparable worth: alternatives to litigation and legislation. PMID- 3844056 TI - The legal process and medical malpractice. PMID- 3844057 TI - Investing for women--is it different? PMID- 3844058 TI - Networking: a power strategy. PMID- 3844059 TI - The American Association of Nurse Attorneys. PMID- 3844060 TI - Nursing products: primary components of health care. PMID- 3844061 TI - Guidelines to protect nurses from AIDS. PMID- 3844062 TI - Doctors ordered to consult parents before prescribing. College regrets appeal ban on contraception for girls under 16. PMID- 3844063 TI - Looking back in anguish. PMID- 3844064 TI - First impressions. PMID- 3844065 TI - Royal College of Nursing. Put to the test. PMID- 3844066 TI - Lively debate augurs well for the future. PMID- 3844067 TI - Will prevent nursing from moving forward to a thinking, research-based profession. PMID- 3844068 TI - College backs UNICEF's conclusion for key to survival. Report on the state of the world's children. PMID- 3844070 TI - To let nurses work in ignorance is despicable says College. Nurses not told patients had AIDS. PMID- 3844069 TI - Concern over appointments. PMID- 3844071 TI - Unique ANP assembly. PMID- 3844072 TI - A day in the life of a kibbutz nurse. PMID- 3844073 TI - Royal College of Nursing. A taboo too long. PMID- 3844075 TI - Welcome to NHS. PMID- 3844074 TI - Join hands to make this Joint Forum the success it deserves to be. PMID- 3844076 TI - Child sexual abuse. PMID- 3844077 TI - Moving records without delay. PMID- 3844078 TI - DHSS to go ahead with restrictive list. Nurses strongly against limited drugs list plan. PMID- 3844080 TI - Royal College of Nursing. Influence. PMID- 3844079 TI - NHS urged to take more account of women's needs. PMID- 3844081 TI - Mental handicap nursing should stay under the spotlight of the profession. PMID- 3844082 TI - New assembly aimed at destroying age old nurses problems of apathy and inaction. PMID- 3844083 TI - Nurses must take the professional conduct code seriously. Managers are 'ignoring the UKCC code'. PMID- 3844085 TI - Problems faced by nurses. PMID- 3844084 TI - Addiction and alcoholism among nurses. PMID- 3844086 TI - Royal College of Nursing. Retrograde step. PMID- 3844087 TI - The joint appointment represents an important way forward for nurses to achieve their ideals. PMID- 3844088 TI - Three D division: drink, drugs and deliverers of care. PMID- 3844090 TI - Ambulatory/outpatient I.V. care. PMID- 3844089 TI - IHSM conference on implementation of Griffiths at unit level. Management contribution of nurses. PMID- 3844091 TI - Travenol: high-tech home care. PMID- 3844092 TI - I.V. therapy and home care. PMID- 3844093 TI - Preparing for certification. How to take the examination. PMID- 3844094 TI - Making the NITA standards work for you. PMID- 3844095 TI - Home health agencies. Functions and reimbursement. PMID- 3844097 TI - Transfusion therapy for nurses. Part 2. PMID- 3844096 TI - Extravasation. The dreaded complication. PMID- 3844098 TI - Advantages of an all-nurse educational program. PMID- 3844099 TI - Hickman catheter exit site skin sensitivities in an oncology patient population. PMID- 3844100 TI - Lidocaine use for placing I.V. cannulas. PMID- 3844101 TI - Pediatric I.V. care. PMID- 3844102 TI - Managing impaired nurses. PMID- 3844103 TI - The troubled nurse: a conceptual framework for resolving problems. PMID- 3844104 TI - On the scene: the troubled nurse at the University of Cincinnati Hospital. PMID- 3844105 TI - On the scene: University of Cincinnati Hospital. Employee assistance in nursing. PMID- 3844106 TI - On the scene: the University of Cincinnati Hospital. The law enforcement perspective: drug dependent nurses. PMID- 3844107 TI - On the scene: University of Cincinnati Hospital. The disease of chemical dependency: recovery to restoration. PMID- 3844108 TI - On the scene: University of Cincinnati Hospital. Legitimate anger: consequences and challenges. PMID- 3844109 TI - On the scene: University of Cincinnati Hospital. The angry nurse/the angry staff. PMID- 3844110 TI - On the scene: University of Cincinnati Hospital. Confronting inadequate clinical performance. PMID- 3844112 TI - On the scene: University of Cincinnati Hospital. Nurses with chronic debilitating diseases. PMID- 3844111 TI - On the scene: University of Cincinnati Hospital. Guidelines for confrontation. PMID- 3844114 TI - The moderately troubled nurse: a not-so-uncommon entity. PMID- 3844113 TI - On the scene: University of Cincinnati Hospital. Other troubles for the troubled nurse. PMID- 3844115 TI - Developing an alternative disciplinary process for the troubled nurse. PMID- 3844116 TI - Books for nursing administrators. PMID- 3844117 TI - A new look at wound care. PMID- 3844118 TI - Drug-induced anaphylaxis. PMID- 3844119 TI - Difficult patients: doing Mrs. Angelo a favor. PMID- 3844121 TI - Are you prepared for a hospital fire? PMID- 3844120 TI - Dealing with the dangers of dysphagia. PMID- 3844122 TI - Caring for a patient with a transhepatic biliary decompression catheter. PMID- 3844123 TI - Cut your paperwork with this 4-minute E.D. admission form. PMID- 3844124 TI - When families get together. PMID- 3844125 TI - The right solution: mixing I.V. drugs thoroughly. PMID- 3844126 TI - A tiny warrior. PMID- 3844127 TI - The perennial problem of problem solving. PMID- 3844128 TI - Sharing: no regrets. PMID- 3844129 TI - Law for the nurse manager. Patient teaching. PMID- 3844130 TI - For those who are about to die. PMID- 3844131 TI - Patient education: megatrends reinforce its priority. PMID- 3844132 TI - Credentialling: meeting 1985 regulatory standards. PMID- 3844133 TI - Productivity: fighting the battle of the budget. PMID- 3844135 TI - On discontinuing high-tech life supports: who decides? PMID- 3844134 TI - Shades of Code Blue: an ethical framework. PMID- 3844136 TI - Indigent patients: more nursing on less revenue. PMID- 3844137 TI - Art & science of management. Pulled apart? PMID- 3844138 TI - Quality assurance in occupational health nursing. PMID- 3844139 TI - A conceptual model for occupational health nursing practice. PMID- 3844140 TI - Continuing education: then and now. PMID- 3844141 TI - Health screening for hospital personnel exposed to waste anesthetic gases. PMID- 3844142 TI - A teaching guide for employees exposed to waste anesthetic gases. PMID- 3844143 TI - Stress and survival of illness: a study of disability-work groups and their effect on employee productivity and well-being. PMID- 3844144 TI - Promoting prenatal care and breastfeeding in the workplace. PMID- 3844145 TI - Premenstrual syndrome: a self-help checklist. PMID- 3844146 TI - Nursing intervention aids RN addicts in recovery and re-entry into work force. PMID- 3844148 TI - Nursing diagnosis at the art museum. PMID- 3844147 TI - Nurse use of general-purpose microcomputer software. PMID- 3844149 TI - The covert curriculum. PMID- 3844150 TI - Informed consent: how much information is enough? PMID- 3844152 TI - On nursing diagnosis. PMID- 3844151 TI - Clarifying tenure requirements. PMID- 3844153 TI - Is there any empathy left for the nurses? PMID- 3844154 TI - Strategic planning for the 1990's. PMID- 3844155 TI - Flies in the ointment. An ethical perspective on dual relationships in psychosocial nursing education. PMID- 3844156 TI - The impact of arthritis on quality of life. AB - This study explored the impact of pain and functional impairment on the quality of life experienced by persons with arthritis. Using a cognitive framework, a causal model was developed in which the disease-related variables interacting with demographic and social factors were hypothesized to indirectly affect quality of life through psychological mediators. Ninety-four adults--74 women and 20 men--with various forms of arthritis were interviewed in their homes. Overall, the model explained 46% of the variance in quality of life. Path analysis showed that the psychological mediators--positive self-esteem, internal control over health, perceived support, and low negative attitude toward the illness- contributed directly to a higher quality of life. Severity of arthritis-related impairment indirectly affected quality of life through the mediating variables. PMID- 3844157 TI - Physical attractiveness and nurses' perceptions of pediatric patients. AB - This study investigated the effect of the physical attractiveness of pediatric patients on nurses' impressions. Sixty-six nurses answered questions about pediatric patients who were allegedly involved in a disturbance in a hospital. The patients who were rated varied in attractiveness. Nurses held a patient less personally responsible for the disturbance, attributed a patient's behavior to situational causes, and perceived the attending nurse as more responsible when the patient was highly attractive. In contrast, an unattractive patient was reported to have a higher probability of emotional problems. These findings are consistent with the work of Dion (1972). PMID- 3844158 TI - Adherence to health care regimens among elderly women. AB - This study examined selected components of nurse practitioners' care to determine which contributed most to the intent to adhere to the care plan. High and low levels of components of care (technical quality, psychosocial, and patient participation) were depicted by videotapes of a patient visit to a nurse practitioner. The videotapes were randomly selected and shown in 26 senior citizen nutrition centers in a metropolitan area. Elderly women indicated how likely they would be to adhere if they had been the patient in the tape. High psychosocial care was the only component significantly related to intent to adhere; however, the significance did not hold in an analysis of covariance when individual characteristics were controlled. Individual characteristics related to high intent to adhere were widowed marital status, religion, perceived importance of the examination, social network, and preexisting satisfaction with health care. PMID- 3844159 TI - Infant and preschool well-child care: master's- and nonmaster's-prepared pediatric nurse practitioners. AB - The nursing and medical literature reveals considerable debate over whether graduate or continuing education is the appropriate level for nurse practitioner preparation. These arguments have been rhetorical since the research literature lacks data on the scope of practice of master's- and nonmaster's-prepared nurse practitioners. The purpose of this study was to examine possible differences between the two types of practitioners in one area--well-child care provided by pediatric nurse practitioners (PNPs). A total of 236 master's- and nonmaster's prepared PNPs completed a background questionnaire and checklists of nursing activities involving infant and preschool well-child care. Analysis of study results showed that master's PNPs performed more activities involving (1) assessment of physical and cognitive development of infants (p less than .003); (2) assessment of personality and socialization of preschool children (p less than .05); and (3) counseling and guidance involving the physical and cognitive development of infants (p less than .01). Master's PNPs also appeared to benefit more from their years in practice both in terms of the number of assessment activities (p less than .04) and management activities (p less than .06) they performed. Finally, master's PNPs engaged in more leadership activities than nonmaster's PNPs (p less than .005). PMID- 3844160 TI - Employment, family roles, and mental ill health in young married women. AB - Women are entering the labor force at unprecedented rates, many combining employment with their roles as wives and mothers. The purpose of this study was to determine if the complement of women's roles was associated with negative mental health effects. It was hypothesized that multiple roles would have negative effects on mental health only in the presence of a social context that itself was associated with symptoms of mental ill health. The contextual variables included influence of sex role norms, task-sharing support from the spouse, and support from a confidant. A sample of 140 married women randomly selected from registrants at a family health clinic were interviewed about their roles and mental health. The complement of the women's roles was not associated with mental ill health, nor was there a clear relationship between employment or parenting on mental health. Each of the contextual variables had a moderate influence on symptoms of mental ill health. Women who had traditional sex role norms, little task-sharing support from a spouse, and little support from a confidant had poorer mental health than their counterparts. Thus, in this sample, the context for role performance had a stronger influence on mental health than did the actual roles women performed. In addition, the importance of the social contextual variables was contingent on the woman's complement of roles. For women who were both spouse and parent, confiding support was most important.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3844161 TI - Forecasting for nursing policy: a news-based image approach. AB - A prototype of a news-based forecasting model was developed as an aid to policymaking in nursing and to assist in setting priorities for promoting an effective image of nursing. Newspaper articles about nursing were analyzed each month from 1978 to 1981. A model, constructed to show the effects of key nursing tissues on the image of nursing, was estimated using Ridge Regression to determine the direction and magnitude of the effect that each of the key issues had on the image of nursing. It was determined that newspaper articles that show nurses in clinical settings and articles that show nurses as playing a major role are the most important factors in projecting a positive image of nursing. The model was used to construct forecasts for the image of nursing from 1982 to 1984. The image of nursing was forecasted to improve over this period, primarily because of a projected increase in the number of articles that show nurses in this positive image. PMID- 3844162 TI - Cost savings as an indicator of successful nursing intervention. AB - The purpose of this study was to provide cost-related data from an intervention study in the care of patients with peripheral vascular disease (PVD). In a previously reported study, the study group patients increased exercise more than control patients, but there were no differences on any other health promoting behaviors or clinical outcomes. However, analysis of the differences between the study (N = 44) and the control patients (N = 42) on costs for health care during the course of the study demonstrated substantial differences. A fixed per diem rate was used to determine inpatient and outpatient costs. Study patients required significantly fewer PVD-related hospitalization and health care costs than control patients but not on vascular-related and nonvascular-related illnesses. Since there were no differences between the study and control on non PVD illnesses, it appears that the intervention targeted to influence PVD problems did so. Limitations to the study are identified and additional research in this area is warranted. PMID- 3844163 TI - Predicting success in graduate clinical specialty programs. PMID- 3844164 TI - Smoking behavior of nurses in western New York. PMID- 3844165 TI - Approaches to cleaning data sets: a technical comment. AB - Since each of the methods described has its costs and benefits, more than one method should be used. The combination of methods helps the researcher to obtain an error-free data set. Ideally, value-to-value verification for all data sets is preferred but the multiple entry method is more efficient for large data sets. Each researcher has a definition of large and small data sets. One definition of a large data set is one containing more than 250 records. Such a definition will not be appropriate for all investigators. Therefore, each researcher should balance the allocation of resources needed for a method against the confidence required for the data. PMID- 3844166 TI - Extraordinary attributes. PMID- 3844167 TI - Incontinence in the elderly. 4. Nursing the incontinent patient. PMID- 3844168 TI - Future imperfect? PMID- 3844169 TI - A year is a long time in politics... PMID- 3844170 TI - Picking out pecking orders. PMID- 3844171 TI - Phobias--the misunderstood fear. PMID- 3844172 TI - A group with a difference. PMID- 3844173 TI - How drugs act. Five. Overdoses and poisoning. PMID- 3844174 TI - Education. The shock of transition. PMID- 3844176 TI - Models and theories. Five. Orem's self-care model. PMID- 3844177 TI - Problems of the ward manager. Eleven. Personality clash. PMID- 3844175 TI - Cause for complaint. Six. 'A regrettable accident'. PMID- 3844178 TI - Nurses' attitudes to therapeutic abortion. PMID- 3844179 TI - The nurse in minor casualty. PMID- 3844180 TI - Coping with primary nursing. PMID- 3844181 TI - More about Qualpacs. PMID- 3844182 TI - Them and us. BNDU news letter. PMID- 3844183 TI - Loss of job status. PMID- 3844184 TI - An adventure that became an obsession. PMID- 3844185 TI - Privatisation: who cleans up after? PMID- 3844187 TI - Filling the gaps in the network. PMID- 3844186 TI - Quality assurance. What's best for the patient? PMID- 3844188 TI - Making your plans work. PMID- 3844189 TI - Role restrictions. PMID- 3844190 TI - Mental health law: a case of over-protection. PMID- 3844192 TI - An anguished adolescent. PMID- 3844191 TI - How drugs act. Six. Drugs at different ages. PMID- 3844193 TI - Education: carry on training. PMID- 3844194 TI - Clinical: liquid assets. PMID- 3844195 TI - Systems of life no 121. Setting up the systems-21. PMID- 3844197 TI - Video friendly. PMID- 3844196 TI - Soap opera bubbles out of a health centre. PMID- 3844198 TI - When a heated room can be a deathtrap. PMID- 3844199 TI - Peer review: a peer is born. PMID- 3844201 TI - A routine story. PMID- 3844200 TI - Eight days a week. PMID- 3844202 TI - Management: how to escape the time trap. PMID- 3844203 TI - How drugs act. Seven. Vitamins. PMID- 3844204 TI - The invisible 'nurse'. PMID- 3844205 TI - Easing the tension. PMID- 3844207 TI - Mental health nursing. Towards a better tomorrow. PMID- 3844206 TI - Working towards terminal peace. PMID- 3844208 TI - Mental health nursing. Are we really accountable? PMID- 3844209 TI - Mental health nursing. The need for good practice. PMID- 3844210 TI - Mental health nursing. Why Jay need not be a threat. PMID- 3844211 TI - Breast is best. PMID- 3844212 TI - Advanced nursing practice. Learning from the specialists. PMID- 3844213 TI - Still night, silent night? PMID- 3844214 TI - Education: curriculum planning. PMID- 3844215 TI - Out-patient nursing. 2. Everyday care. PMID- 3844218 TI - Psychiatry: healing qualities. PMID- 3844217 TI - Management. Measurement of care quality. PMID- 3844216 TI - Matters of conscience. No easy answers. PMID- 3844219 TI - Two psychiatric entities. PMID- 3844221 TI - Midwifery: examining for defects. PMID- 3844220 TI - Being touched for money. PMID- 3844222 TI - Management: forms of appraisal. PMID- 3844223 TI - In-patients' human rights. PMID- 3844224 TI - Education: a shoestring solution. PMID- 3844225 TI - Practice: masking the truth. PMID- 3844227 TI - Resolutions--up in smoke? PMID- 3844226 TI - Family planning and sexual counselling. PMID- 3844228 TI - Bottle feeding. PMID- 3844230 TI - Out-patient nursing 3. Rheumatology health education. PMID- 3844229 TI - Midwifery: chair versus bed. PMID- 3844232 TI - Struck numb. PMID- 3844231 TI - A legacy from the past. PMID- 3844233 TI - Nursing care study: downfall of a gymnast. PMID- 3844234 TI - Management: expansion on slender means. PMID- 3844235 TI - Budgeting for managers. PMID- 3844236 TI - Education: getting the procedure right. PMID- 3844238 TI - Advanced nursing practice. Accountable to whom? PMID- 3844237 TI - Out-patient nursing. 5. School for society. PMID- 3844240 TI - Passing the prejudice. PMID- 3844239 TI - Who cares wins. PMID- 3844241 TI - Oncology nursing. 2. Getting to the heart of cancer. PMID- 3844242 TI - Antifungal agent for prostatic carcinoma. PMID- 3844243 TI - A new analgesic. PMID- 3844244 TI - Nursing management of disseminated intravascular coagulation. PMID- 3844245 TI - Learned helplessness: analysis and application. PMID- 3844246 TI - Attitudes of nurses toward cancer and cancer therapies. PMID- 3844247 TI - Building the knowledge base for practice. Part I: Nausea and vomiting. PMID- 3844248 TI - Ambulatory services: the mainstay of cancer nursing care. PMID- 3844249 TI - The American Cancer Society's scholarship program. PMID- 3844250 TI - Evaluating patient education material. PMID- 3844251 TI - An interview with ONS presidential aspirants: Judi Johnson and Joan Piemme. Interview by Linda Arenth. PMID- 3844252 TI - Sexuality as a variable in oncology nursing research. PMID- 3844253 TI - The best of times and the worst of times: historical reflections from an American Cancer Society National Nursing Consultant. PMID- 3844254 TI - Cancer Nursing: an international perspective. PMID- 3844255 TI - The Association of Pediatric Oncology Nurses: the first ten years. PMID- 3844256 TI - The early days: four smiles and a post office box. PMID- 3844257 TI - A historical perspective in cancer nursing. PMID- 3844258 TI - R.N. errs in charting Rh factor: child stillborn. PMID- 3844259 TI - Nurses Assn. challenges regulations: nurse practitioners. Case in point: Ark. St. Nurses Assn. v. Ark. St. Med. Bd. (677 S.W. 2d 293--AR). PMID- 3844260 TI - Legal case briefs for nurses. OH: home health care: liability for bill & interest. NC: R.N. alleges sex discrimination: Civil Rights. PMID- 3844261 TI - Narcotics "unaccounted for": license revocation reversed. Case in point: Hogan v. Miss. Bd. of Nursing (457 So. 2d 931--MS). PMID- 3844262 TI - Family-centered care in rehabilitation. PMID- 3844264 TI - Beyond support: traumatic head injury as a growth experience for families. PMID- 3844263 TI - Maximizing rehabilitation for the elderly patient with spinal cord injury. PMID- 3844265 TI - Employment of persons with spinal cord injuries: implications for nursing. PMID- 3844266 TI - Helping yourself and your patients when working with Clinitron therapy. PMID- 3844267 TI - Nursing actions vs. arthritis quackery. PMID- 3844268 TI - We don't have head nurses anymore. PMID- 3844269 TI - Straight talk on sex for the older patient. PMID- 3844270 TI - New IV catheters that can do it all. PMID- 3844271 TI - What office nurses earn. PMID- 3844272 TI - Dealing with third-trimester bleeding. PMID- 3844273 TI - Your role in radiation therapy. PMID- 3844274 TI - When a teenager faces amputation. PMID- 3844275 TI - Rn master care plan: postop needs of the amputee. PMID- 3844276 TI - The ins and outs of contact lenses. PMID- 3844277 TI - Easing the discomfort of herpes zoster. PMID- 3844278 TI - Tips on giving pre-trial testimony. PMID- 3844279 TI - You can't be too careful with cytotoxic drugs. PMID- 3844280 TI - What you can learn from CSF tests. PMID- 3844282 TI - Nursing is--four nurses tell what nursing means to them. PMID- 3844281 TI - A continuing career via continuing education. PMID- 3844283 TI - Biosynthesis and regulation of iodolipids in calf thyroid. AB - The incorporation of 125I into iodolipids was investigated in calf thyroid slices. Time course studies showed that the iodination of lipid reaches a plateau after 30 min of incubation. A highly significant correlation was found between iodination of lipid and of protein (r = 0.906), suggesting that both reactions may be related. Addition of PTU or MMI caused a significant inhibition of lipid iodination, indicating that a peroxidase could be involved in this reaction. The iodinated lipids are not attached to protein, since they migrated in BEA chromatography and pancreatin digestion of the samples did not modify the percentage radioactivity. The iodolipid fraction observed in BEA chromatography was eluted and analysed by TLC. Iodinated free fatty acids and neutral lipids comprised most of the radioactivity. Although iodolipids are present in every subcellular fraction, the 20 000 X g pellet had the greatest proportion of iodinated fatty acids and neutral lipids. PMID- 3844284 TI - Elastase secretion in pancreatic disease. AB - To estimate the diagnostic value of elastase output in the duodenal aspirates during a pancreozymin secretin test, elastase as well as amylase, chymotrypsin, trypsin, and lipase was determined in 46 controls and 61 patients with various disease. The elastase output decreased significantly in chronic pancreatitis (mild exocrine insufficiency 13 and advanced eight), pancreatic cancer (n = 10), and liver cirrhosis (n = 14) when compared with the controls. The outputs of the four other enzymes also decreased in chronic pancreatitis and pancreatic cancer, not in liver cirrhosis. Low elastase output was found in four of 13 chronic pancreatitis patients with mild exocrine insufficiency, whereas low outputs of the other enzymes were observed in only one or less of the 13. The ratio of elastase to amylase alone was significantly lower in the pancreatic diseases. The results suggest that elastase is the most susceptible enzyme to pancreatic dysfunction and that its output and its ratio to amylase output provide a valuable index to assess the enzyme secretory capacity in the pancreatic diseases. PMID- 3844285 TI - First, anticipate the harm. . . PMID- 3844286 TI - Is nursing's self-regulatory power being eroded? PMID- 3844287 TI - Air bags: an uplifting idea. PMID- 3844288 TI - Encopresis. PMID- 3844289 TI - A nail-safe method. PMID- 3844290 TI - Wound care forum. Artful solutions to chronic problems. PMID- 3844291 TI - SQ chemotherapy at home. PMID- 3844292 TI - The more things change... PMID- 3844294 TI - First phase complete as project identifies health policy issues. PMID- 3844293 TI - Equal access to care is nursing's challenge. PMID- 3844295 TI - Nurses establish clinic for homeless. PMID- 3844296 TI - Efforts continue for nursing institute proposal. PMID- 3844297 TI - Lessons from past can help nursing reach its goals. PMID- 3844298 TI - RN on AMA staff wants nurses, MDs to be allies. Interview by Patricia McCarty. PMID- 3844299 TI - Dare to excel in ambulatory surgery. AB - Outpatient surgery is not just an off-shoot or satellite of maturing inpatient care. It is a distinct entity and one nursing can use to full advantage. It is a superb clinical laboratory for nursing students who are studying perioperative nursing. Here, students can see all three phases of patient care in three to four hours. I chose the field of ambulatory surgery and found a new venture and a clinical area ready for creative ideas and new ways of implementing the nursing process. One characteristic of excellent companies, say Peters and Waterman, is the presence of champions. "The champion is not a blue-sky dreamer, or an intellectual giant. The champion might even be an idea thief. But, above all, he's the pragmatic one who grabs onto someone else's theoretical construct if necessary and bullheadedly pushes it to fruition." Are you a champion, and what will you do to make your ambulatory surgery center be known as the best? PMID- 3844300 TI - When a patient insists on driving home after ambulatory surgery. PMID- 3844301 TI - A preoperative teaching program. Preparing a child for ambulatory surgery. PMID- 3844302 TI - The elderly patient. PMID- 3844303 TI - Collagen for implantation. Patient selection and education. PMID- 3844304 TI - Home study program. Malignant hyperthermia. PMID- 3844306 TI - Postanesthesia scoring system. Discharging ambulatory surgery patients. PMID- 3844305 TI - Malignant hyperthermia. A peroperative emergency. PMID- 3844307 TI - Mainstreaming inpatients and outpatients. Modifying systems to everyone's advantage. PMID- 3844309 TI - Oldest freestanding ambulatory center comes back strong after fire. PMID- 3844308 TI - Patient anxiety levels. An ambulatory surgery study. PMID- 3844310 TI - Intraoperative cardiac arrest. Nursing implications. PMID- 3844311 TI - Venous reconstruction. Surgery for severe venous stasis. AB - Deep venous thrombosis is a common occurrence among hospitalized patients. The sequelae of deep venous thrombosis, chronic venous insufficiency are well known. The nurse must know the signs and symptoms of venous thrombosis, and have knowledge of patients at high risk for developing thrombosis. Careful attention must also be given to accurate diagnosis of the precise venous abnormality prior to surgical intervention. New techniques, such as valve transplantation, plastic reconstruction of existing valves, or insertion of prosthetic valves, are in the early investigative stages. It is evident from the statistics mentioned earlier that the need for venous reconstructive surgery is widespread. PMID- 3844312 TI - Who decides and when is the time to institute resuscitative efforts? PMID- 3844313 TI - Catalysis by human leukocyte elastase: III. Steady-state kinetics for the hydrolysis of p-nitrophenyl esters. AB - Steady-state kinetic parameters were determined at pH 7.4 and 25 degrees C for the human leukocyte elastase-catalyzed hydrolysis of several N-carbobenzoxy-L amino acid p-nitrophenyl esters. The substrate specificity for these esters was quite broad, and included the Gly, Phe, and Tyr derivatives. Together with reports of a much narrower P-1 specificity for peptide-based substrates, these results suggest that interactions remote from the scissle bond between enzyme and substrate regulate primary specificity. Also, it was found that kc and kc/Km did not exhibit the same dependence on substrate structure. This is interpreted to suggest that there are significant differences in P-1 specificity between acylation and deacylation for leukocyte elastase-catalyzed reactions. PMID- 3844314 TI - Rifampin resistance. Development during the therapy of methicillin-resistant Staphylococcus aureus infection. AB - The incidence of methicillin-resistant staphylococcal infections, for which vancomycin hydrochloride remains the only active cell-wall antibiotic therapy, is rising. Some physicians have been combining other antibiotics with vancomycin in hopes of obtaining a more effective regimen for the therapy of these infections. Rifampin has been advocated as a concurrent second antibiotic because of its extraordinary potent bactericidal activity for Staphylococcus aureus. When rifampin is used in combination with a cell-wall antibiotic, suppression of the development of rifampin resistance has been thought possible. We report a case of infection caused by a methicillin-resistant S aureus in which the rifampin resistance occurred during therapy with vancomycin and rifampin. The rifampin resistance was stable and was present after ten serial broth and agar passages. Physicians are cautioned against the indiscriminant or routine use of rifampin as a second antibiotic in combination with vancomycin for the therapy of infections caused by S aureus. PMID- 3844315 TI - Changes in nongonococcal septic arthritis: drug abuse and methicillin-resistant Staphylococcus aureus. PMID- 3844316 TI - Enzymatic characterization of arginine esterase from dog seminal plasma. AB - Previously purified arginine esterase from dog seminal plasma was characterized enzymatically. The enzyme was found to have a rather narrow specificity for arginine esters, much less for lysine esters and was practically devoid of activity towards tyrosine esters, casein, albumin and azocoll. It had a broad optimum pH between 8 and 9. It presented no kallikrein-like activities either in the blood pressure test in dog or in the rat uterus contraction test. It was inhibited by bovine pancreas trypsin inhibitor, aprotinin, phenylalanylprolyl arginine chloromethyl ketone, diisopropylfluorophosphate, phenylmethylsulfonyl fluoride, sodium dodecyl sulfate and leupeptin, but not by soybean trypsin inhibitor, tosyllysine chloromethyl ketone, tosylamide-2-phenylethyl chloromethyl ketone, iodoacetamide, Triton X-100 and EDTA. Experiments involving incubation of prostatic cytosol with purified arginine esterase showed that actin was the only important prostatic protein that was extensively hydrolyzed by this enzyme. It is not known presently whether the hydrolysis of actin is related to a true physiological function of the enzyme and whether actin and arginine esterase ever come into contact with each other in vivo. These properties indicate that arginine esterase from dog seminal plasma is different from other known proteinases including classical kallikreins, although it presents many similarities with this class of enzyme. PMID- 3844317 TI - The Grange report. Nurses criticize commission's report for lack of answers. PMID- 3844318 TI - Validation therapy: a companion to reality orientation. PMID- 3844319 TI - Nutrition and aging: an overview. PMID- 3844320 TI - A mobile health assessment program for the elderly. PMID- 3844321 TI - How do you mother when you are disabled? PMID- 3844322 TI - Nursing care of the multiple sclerosis patient treated with cyclophosphamide. PMID- 3844323 TI - An interview with Health and Welfare Minister Jake Epp. Interview by Margaret Allen.. PMID- 3844324 TI - Right atrial catheters: a patient and family education program. PMID- 3844325 TI - The effect of null C4 alleles on complement function. AB - C4 is encoded at two polymorphic genetic loci (C4A and B), and "null" or unexpressed alleles are relatively common. An increased frequency of nulls has been reported in a variety of diseases. In the present study, C4 allotypes and C4 hemolytic efficiencies (the ratios of functional to antigenic levels) were determined for a population of 75 normal unrelated individuals. Of these, 28 had three gene products (single null at C4A or B) while three had no expressed C4A products and three had no C4B products (homozygous null). Mean antigenic C4 levels correlated with the number of expressed gene products but there was a wide spread of individual values. Those homozygous null for C4A had greater, and for C4B less, hemolytic efficiency than those with four gene products. However, there was no difference in the in vitro kinetics of C3 convertase formation between homozygous null C4A or C4B individuals. Therefore, the presence of null genes for C4 does not appear to compromise complement function sufficiently to account for the reported disease associations. Some of the associations may result from the fact that null genes for C4, as part of an extended HLA haplotype, may be genetically linked to disease susceptibility. PMID- 3844326 TI - Evaluation of spinal infections by plain radiographs, computed tomography, intrathecal metrizamide, and CT-guided biopsy. AB - 16 cases of spinal infection were reviewed to evaluate the usefulness of plain radiographs, noncontrast computed tomography (CT), computed tomographic metrizamide myelography (CTMM), plain film metrizamide myelography, and CT-guided biopsy techniques. Noncontrast CT was more useful than plain films in the evaluation of disc space and bony involvement and soft tissue extension of infection into the paraspinal spaces. CTMM was needed for evaluation of epidural or subdural involvement of infection in the cervical and thoracic spine, while plain film metrizamide myelography was useful as a survey for CTMM. CT-guided biopsy was definitive in establishing the etiology of the offending organism. PMID- 3844327 TI - Detection of basilar artery thrombosis by CT. AB - A case is presented with distal basilar artery occlusion diagnosed by computed tomography (CT). The normal basilar artery imaged on plain CT scans has an attenuation value not higher than that of whole blood. If the CT attenuation value of the vessel is higher than that of blood, basilar artery occlusion is probably present. In the case presented the cause was traumatic thrombo-embolic occlusion of the basilar artery. PMID- 3844328 TI - Magnetic resonance imaging in hemosiderosis. AB - The case of a patient with iron deposition disease is presented to illustrate the value of magnetic resonance imaging (MRI) in the evaluation of this entity. The image characteristics of MRI are discussed and the results are compared with those of computer tomography (CT). The importance of a decrease in T2 relaxation time as the determinant parameter for signal intensity in MRI of the liver in such patients is emphasized. PMID- 3844330 TI - Heating the spot. PMID- 3844329 TI - Bard Nursing Award. End this fragmented approach. PMID- 3844331 TI - The elderly: trapped in the caring net. PMID- 3844332 TI - Diabetes. Stable in the community. PMID- 3844333 TI - Matters for concern. No room for complacency. PMID- 3844334 TI - Communication: a basis for sound nursing. PMID- 3844335 TI - A nurse remembers how it was. PMID- 3844336 TI - Pancreatic secretory trypsin inhibitor, cathodal trypsin, and pancreatic elastase in pancreatic juice collected at endoscopic retrograde cholangiopancreatography. PMID- 3844338 TI - Evaluation and significance of kinetic parameters governing function of protein synthesis initiation factors eIF-2 and eIF-2B. AB - Published data dealing with the formation of the ternary complex eIF-2 X GTP X met-tRNAi involved in eukaryotic initiation have been evaluated to calculate the expected inhibition by GDP and the role of eIF-2B in limiting this inhibition. It is concluded that cellular levels of GDP are unlikely seriously to inhibit ternary complex formation if the reaction can proceed to equilibrium. However, derivation of 'on' and 'off' rates for the interaction of GTP and GDP with eIF-2 demonstrates that these are too slow in the absence of eIF-2B to support active protein synthesis, particularly if eIF-2 is released from ribosomes as eIF-2 X GDP. Whilst eIF-2 X GDP and eIF-2 X GTP appear to dissociate equally slowly, it is concluded that GDP binds to eIF-2 100-times faster than GTP. Addition of eIF 2B has the effect of raising k-1 for both GDP and GTP several hundred-fold and k+1 50- and 7000-fold, respectively. Thus, a kinetic block can be relieved even if there is no change in the thermodynamic state. Phosphorylation of the alpha subunit of eIF-2 appears to affect only those parameters influenced by eIF-2B. The reported rescue of inhibited lysates by addition of 1 mM GTP is not by mass action but by some other mechanism. Consideration of the kinetic parameters favours the formation of a ternary complex of eIF-2 X eIF-2B X GDP en route to eIF-2 X GTP as opposed to displacement of GDP from eIF-2 X GDP by eIF-2B. PMID- 3844337 TI - Acylation of adenovirus type 12 early region 1b 18-kDa protein. Further evidence for its localisation in the cell membrane. AB - The 18-kDa E1b protein in Ad 12-transformed rat cells and in Ad 12-infected human cells binds lipid strongly. The lipid is not removed by boiling in the presence of SDS or by extraction with methanol/chloroform. It is, however, dissociated from the protein by treatment with methanolic KOH suggesting that attachment is through an ester linkage. The acylated 18-kDa protein is detected only in the membrane fraction. Labelling cell surface proteins on Ad 12-transformed cells with [125I]iodosulphanilic acid shows that some of the Ad 12 18-kDa E1b protein is present on the outside of the cell. It is concluded that this protein is responsible for cell surface T-antigen activity. PMID- 3844339 TI - Exciting opportunity to enhance patient care delivery. PMID- 3844340 TI - Tax benefits for critical care nurses. PMID- 3844341 TI - Severe liver dysfunction. Client problems and nursing actions. PMID- 3844342 TI - What are the needs of families of critically ill patients? PMID- 3844343 TI - Response to Luther Christman's "the future of nursing". PMID- 3844344 TI - Establishing a nursing education fund. PMID- 3844345 TI - Orem's self-care deficit theory of nursing. PMID- 3844346 TI - Confronting ethical questions. PMID- 3844347 TI - Am I my brother's keeper? PMID- 3844348 TI - Spiritual healing: a personal experience of something beyond. PMID- 3844349 TI - Curious about clinical research? PMID- 3844350 TI - The research process. PMID- 3844352 TI - Job sharing--a viable work option for health care workers. PMID- 3844351 TI - Collaborative relationships in nursing research. PMID- 3844353 TI - Loss and grief. PMID- 3844354 TI - The work of a nurse adviser on incontinence. PMID- 3844355 TI - To nap or not to nap? PMID- 3844356 TI - Nutrition. The latest on labels. PMID- 3844357 TI - 70+ and going strong: "Ziegfeld Girls"--then and now. Interview by Betsy Todd. PMID- 3844358 TI - Drugs and the elderly. Therapy for parkinson's disease. PMID- 3844360 TI - Haiku: a form to air feelings about aging. PMID- 3844359 TI - Understanding herpes zoster and relieving its discomfort. PMID- 3844361 TI - Dramatic decrease in decubitus ulcers. PMID- 3844362 TI - Companion animals and the elderly. PMID- 3844364 TI - Preamble to a new paradigm for women's health care. PMID- 3844363 TI - Determining priority for long-term care. PMID- 3844365 TI - The contributions of Dickoff and James to theory development in nursing. PMID- 3844366 TI - Personal computers and database access. PMID- 3844367 TI - Faculty as doctoral students: policies of doctoral programs in nursing. PMID- 3844368 TI - Nursing diagnosis in perspective: response to a critique. PMID- 3844369 TI - Rights and responsibilities: nurse-patient relationships. PMID- 3844370 TI - Inhibition of C3 deposition on solid-phase bound immune complexes by lactoferrin. AB - In the study described here, the effect of human tears and purified lactoferrin was investigated on the deposition of complement components on solid-phase bound immune complexes. After incubating immune complexes with fresh normal human serum, the deposition of complement components (C3, C4 and C5) was measured with an ELISA technique. Rabbit antibodies were used as a constituent of the immune complexes, and so both alternative and classical complement pathway activation could be studied. The addition of human tears or purified lactoferrin to this system resulted in the inhibition of classical pathway deposition of C3 and C5, while C4 deposition was not affected. High concentrations of human tears also inhibited alternative pathway C3 deposition on immune complexes, whereas lactoferrin did not detectably affect this pathway. The inhibition of complement activation by tears was not due to a masking of the immune complexes or the already deposited C3. Experiments with purified lactoferrin furthermore showed that lactoferrin did not bind to the complexes, either before or during complement activation. These findings suggest that the complement inhibitory effect is probably taking place in the fluid phase. Saturation of lactoferrin with iron or copper ions resulted in a markedly diminished effect on the capacity of lactoferrin to inhibit complement activation. C4 deposition on immune complexes was not affected by lactoferrin, which suggested that the inhibition of the classical pathway was due to an effect on the classical C3 convertase. The fact that lactoferrin inhibits the classical, but not the alternative C3 convertase, suggests that the effect is probably not mediated through a competition for certain trace metal ions, but may be caused by protein-protein interactions. The findings reported here indicate that lactoferrin may play an important anti-inflammatory role by modulating activation of the complement system. This observation adds a new property to the already described functions of the iron-binding protein lactoferrin. PMID- 3844371 TI - [Interview with Jake Epp, Health and Welfare Minister. Interview by Margaret Allen]. PMID- 3844372 TI - [The nurse in school health]. PMID- 3844373 TI - [An experiment involving elderly women in their own health]. PMID- 3844374 TI - [Prevention of confusion: mission impossible?]. PMID- 3844375 TI - [Working in Switzerland: what's the situation?]. PMID- 3844376 TI - [Pain induced by an intramuscular injection]. PMID- 3844377 TI - [Integral care]. PMID- 3844378 TI - [Prevention of infections in the hospital. 1. The infection control program]. PMID- 3844379 TI - [The Grange Report pleases few people]. PMID- 3844380 TI - The nurse as a survivor: delayed post-traumatic stress reaction and cumulative trauma in nursing. AB - As opposed to studies on the immediate psychological impact of traumatic nursing experiences, little attention has been directed to the persistence of certain long-standing hidden symptoms of trauma in some nurses. Since psychological reactions to trauma are claimed to be similar, irrespective of the source of trauma, it is postulated that findings from recent studies on delayed post traumatic stress reaction in Vietnam veterans, victims of natural disaster, and survivors of the holocaust, delineate symptoms which are also found in stress prone nurses utilizing maladaptive coping strategies in response to hospital related traumatic episodes. While some observations are conjectural and speculative, an integrated review is presented of areas of research hitherto unrelated, which serves to deepen our understanding of trauma and its impact upon the mental health of nurses. PMID- 3844381 TI - Dysthymic distress and hostile personality characteristics in Greek student nurses: a comparative study. AB - A comparative evaluation of anxiety, depression and personality deviances of student nurses was attempted, using Foulds' 'Scale of anxiety and depression and personality deviance' on Greek student nurses and on controls from other schools. It was found that: Greek student nurses scored higher in depression than student teachers and the Greek women sample, Greek student nurses scored higher in intropunitiveness than the Greek women sample, but there was no difference between student nurses and the control groups in all the personality deviances, and The younger the students, the higher their scores in anxiety and depression. Our findings support the hypothesis that dysthymic distress in Greek student nurses is associated with stresses of their training. PMID- 3844382 TI - Sex-role stereotype, self-concept, education and experience: do they influence decision-making? AB - The purpose of this study was to investigate the effects of self-concept, sex role stereotype, educational preparation and years of experience upon the nurse's attitudes regarding decision-making. The Joseph Decision-making Tool (JDMT) was designed by the investigator to measure nurses' attitudes regarding decision making. The tool consists of 20 scenarios in which the subject is asked to make a decision regarding a patient problem. Having an alpha reliability of 0.79, the JDMT was found to be exceedingly useful and easy to administer. Self-concept was measured by the BEM Scale. A heterogeneous population of female staff nurses working in medical-surgical units of two large metropolitan hospitals was used. A stepwise multiple regression technique was used to measure the potency of the particular variables in question. In a selected sample of 85 nurses, it was found that nurses with masculine sex-type scores and diploma education (P less than 0.05) felt that nurses should assume responsibility for decision-making. Experience was found to have an inverse relationship (P less than 0.01) with the JDMT. The more experience the nurse has, the less willing she is to make decisions. The majority of nurses (62%) who participated in the study were found to have androgynous rather than feminine sex-role stereotype scores. These two findings indicate changing trends in the traditional view of staff nurses. These new findings will assist nurses in changing the current image of a typically feminine nurse with a low self-concept. This study found strengths in nurses that are often overlooked by the feminists when they study nurses. PMID- 3844383 TI - Acknowledged awareness of life-threatening illness. PMID- 3844384 TI - Catheter care: an overview. PMID- 3844385 TI - The universality of nursing: a comprehensive framework for practice. AB - The international concept of nursing affirms that no country is yet fully developed in terms of health care and acknowledges that primary health care is the most appropriate means of nursing care for the future. The universality of nursing means that care crosses the boundaries of every nation-state and ultimately affects all people because of their interdependence. PMID- 3844387 TI - What's happened since Alma-Ata? PMID- 3844386 TI - Nurses as a social force. AB - Nurses as a Social Force will be the theme of the 18th ICN Congress to be held in 1985 in Tel Aviv. If nurses are to make a full contribution to health care, planning programmes must have a nursing input. How this can be achieved, by individual nurses and by national nursing associations, is the subject of Guidelines produced by the Professional Services Committee of ICN. An abridged version of the Guidelines is published here, based on document BD/84/PSC/7. PMID- 3844388 TI - What does the PSC do? AB - The Professional Services Committee is the only standing committee of ICN. It consists of five national representatives from Ghana, Norway, Philippines, Puerto Rico and the United Kingdom. It meets once a year, for 3-4 days and it reports to the Board of Directors. Martha Quivey (Norway), its chairman, explained its role at the professional conference of the Royal College of Nursing recently. This is an abridged version of her paper. PMID- 3844390 TI - Pointing to a way of hope. PMID- 3844389 TI - Trachoma and cataract: two WHO targets. AB - Among the four diseases of greatest concern to the WHO Programme for the Prevention of Blindness--trachoma, onchocerciasis, xerophthalmia and cataract- the first and the last alone have blinded some 26 million people. But the present toll of avoidable blindness in developing countries can be reduced by 50% over the next ten years. PMID- 3844391 TI - A program for psychological and social enhancement during rehabilitation after myocardial infarction. PMID- 3844392 TI - Comparison of thermodilution cardiac output measurements by injection of the proximal lumen versus side port of the Swan-Ganz catheter. PMID- 3844393 TI - Validation of sublingual temperatures in patients with nasogastric tubes. PMID- 3844394 TI - Assessment and treatment of life-threatening ventricular arrhythmias: the role of programmed electrical stimulation, intraoperative mapping, and endocardial resection. AB - Increasing numbers of patients have survived one or more episodes of life threatening VT or VF. This is largely due to more widespread training in cardiopulmonary resuscitation to the lay public, the advent of mobile and hospital coronary care units with improved survival from myocardial infarction, and aggressive treatment of rhythm disturbances. During the past decade, new techniques in the assessment and treatment of VT and VF have been introduced. These include PES, intraoperative mapping, and endocardial resection. As the use of these techniques becomes more widespread, nurses must expand their knowledge base to include an understanding of their indications and applications so that they may effectively contribute to the emotional and physiologic support of patients undergoing such procedures. PMID- 3844395 TI - Intra-aortic balloon pumping and stress in the coronary care unit. AB - This study compared the perceptions of psychological stress experienced by patients on the IABP with that of other patients in the CCU. During 13 weeks, structured interviews were conducted with 17 male and 10 female patients: Seven were treated with the IABP; 10 were not on the pump but were present during its use; and 10 were neither on the pump nor in physical proximity to it. To measure psychological stress, each patient responded to a list of 20 potentially stressful situations using a stress rating scale. Analysis of variance was used to determine differences in perceptions. The results identified factors in the CCU that patients perceived as stressful and were compared with those of earlier research. Data analysis demonstrated moderate support for the study's hypotheses. Stress levels of patients on the IABP were significantly higher than those of patients who were not on the IABP but present during its use. No significant differences were found between stress levels of patients on the IABP and patients with the IAPB absent or between those of the two groups who were not on the pump. Implications for nursing care of the patient on the IABP were also discussed. PMID- 3844397 TI - Nursing responsibilities in changing visiting restrictions in the intensive care unit. PMID- 3844396 TI - Treatment and care of "do not resuscitate" patients in a medical intensive care unit. PMID- 3844398 TI - Education standards for critical care nursing: conceptual framework. AB - AACN exists to promote the health and welfare of mankind by advancing the science and art of critical care nursing. One of AACN's long-range goals is to promote educational standards for critical care nursing. As a prelude to dissemination of AACN's Education Standards for Critical Care Nursing, this article presented the conceptual framework used to develop this set of standards. PMID- 3844399 TI - A study of ventricular ectopy during atrial fibrillation. PMID- 3844400 TI - Potassium imbalance in the coronary care unit. AB - Alterations in serum potassium levels are not uncommon in this era of wide use of diuretics, potassium supplements, and potassium-sparing drugs. Familiarity with the characteristic electrocardiographic changes related to abnormal serum levels of potassium is necessary in the care of patients in intensive care units. PMID- 3844401 TI - [Pregnancy and women's libido]. PMID- 3844402 TI - [Study trip report]. PMID- 3844404 TI - A rapid bioluminescent method for the detection of methicillin-resistant Staphylococcus aureus colonies. AB - A rapid method for the detection of methicillin-resistant Staphylococcus aureus is described. A bioluminescent technique was used to compare the amounts of extracellular adenosine triphosphate released by methicillin-resistant and methicillin-sensitive strains. When tested by this method 29 Staph. aureus strains of known methicillin susceptibility were correctly identified. PMID- 3844403 TI - [Research report. Paracervical block as obstetric analgesia]. PMID- 3844405 TI - Eukaryotic initiation factor 5 from calf liver is a single polypeptide chain protein of Mr = 62,000. AB - Eukaryotic initiation factor 5 (eIF-5), which specifically catalyzes the joining of a 60 S ribosomal subunit to a 40 S initiation complex to form a functional 80 S initiation complex, has been purified from ribosomal salt wash proteins of calf liver. The purified factor exhibits only one polypeptide band of Mr = 62,000 following electrophoresis in 10% polyacrylamide gels in the presence of sodium dodecyl sulfate. The native protein has a sedimentation coefficient of 4.2 S and a Stokes radius of 33 A which is consistent with eIF-5 being a monomeric protein of Mr = 58,000-62,000. Less pure preparations of eIF-5 elute in gel filtration columns with an apparent Mr of 160,000-180,000 presumably due to association of eIF-5 with other high molecular weight proteins since eIF-5 activity present in such preparations can also be shown by gel electrophoretic separation under denaturing conditions to be associated with a 62,000-dalton protein. Furthermore, eIF-5 purified from calf liver extracts with or without a number of protease inhibitors is indistinguishable with regard to molecular weight and final specific activity of purified preparations. The purified factor catalyzes the hydrolysis of GTP present in 40 S initiation complexes in the absence of 60 S ribosomal subunits. The presence of 60 S ribosomal subunits neither stimulates nor inhibits the hydrolysis of GTP. However, the factor cannot mediate 40 S or 40 + 60 S ribosome-dependent hydrolysis of GTP in the absence of Met-tRNAf or other components required for 40 S initiation complex formation. It can be calculated that 1 pmol of eIF-5 protein can catalyze the formation of at least 10 pmol of 80 S initiation complex under the conditions of in vitro initiation reactions. PMID- 3844407 TI - Transcription and excision of a large intron in the tRNATrp gene of an archaebacterium, Halobacterium volcanii. AB - The archaebacterium Halobacterium volcanii contains a single expressed gene for tRNATrp. This gene is interrupted, at a position corresponding to two nucleotides 3' to the anticodon, by an 105-base pair intervening sequence. Northern hybridization experiments show that the gene is transcribed in its entirety in vivo into a precursor of at least 180 nucleotides, and that one of the products of post-transcriptional processing is a 105-nucleotide species containing intron specific sequences. PMID- 3844406 TI - Formation and release of eukaryotic initiation factor 2 X GDP complex during eukaryotic ribosomal polypeptide chain initiation complex formation. AB - The formation and release of an eukaryotic initiation factor (eIF)-2 X GDP binary complex during eIF-5-mediated assembly of an 80 S ribosomal polypeptide chain initiation complex have been studied by sucrose gradient centrifugation analysis. Isolated 40 S initiation complex reacts with eIF-5 and 60 S ribosomal subunits to form an 80 S ribosomal initiation complex with concomitant hydrolysis of an equimolar amount of bound GTP to GDP and Pi. Sucrose gradient analysis of reaction products revealed that GDP was released from ribosomes as an eIF-2 X GDP complex. Evidence is presented that eIF-5-mediated hydrolysis releases the GTP bound to the 40 S initiation complex as an intact eIF-2 X GDP complex rather than as free GDP and eIF-2 which subsequently recombine to form the binary complex. Furthermore, formation and release of eIF-2 X GDP from the ribosomal complex do not require concomitant formation of an 80 S initiation complex since both reactions occur efficiently when the 40 S initiation complex reacts with eIF-5 in the absence of 60 S ribosomal subunits. These results, along with the observation that the 40 S initiation complex formed with the nonhydrolyzable analogue of GTP, 5'-guanylylmethylene diphosphonate, can neither join a 60 S ribosomal subunit nor releases ribosome-bound eIF-2, suggest that following eIF-5-mediated hydrolysis of GTP bound to the 40 S initiation complex, both Pi and eIF-2 X GDP complex are released from ribosomes prior to the joining of 60 S ribosomal subunits to the 40 S initiation complex. PMID- 3844408 TI - Effect of the source of Mueller-Hinton agar and resistance frequency on the detection of methicillin-resistant Staphylococcus aureus. AB - Inconsistencies in the results of disk diffusion tests of oxacillin against Staphylococcus aureus that occurred when using commercially prepared Mueller Hinton agar from different sources led us to evaluate the ability of media from different sources to detect resistance to oxacillin, methicillin, and nafcillin in S. aureus. Mueller-Hinton agar from five manufacturers was prepared in our laboratory and used for standard disk diffusion and agar dilution tests. Ten oxacillin-resistant S. aureus isolates, of which three were definitive-resistant and seven were occult-resistant, were examined. All definitive-resistant strains were resistant to all three antimicrobial agents on four out of five agars. The occult-resistant strains were consistently detected as resistant on only one of the agars. With only slight differences, oxacillin, methicillin, and nafcillin resistance was more readily detected by disk diffusion and agar dilution when initially incubated at 30 degrees C, and extended incubation improved the detection. The frequency of resistance within a population of occult-resistant cells was low compared with the frequency within a population of definitively resistant cells. The heterogeneity of colony morphology and apparent growth rates within a population of occult-resistant cells contributed to the problem of detecting some resistant isolates. Definitive-resistant isolates were characterized by a very high and stable frequency of resistance. Occult-resistant strains were characterized by a lower frequency of resistance, although the true frequency of resistance may be difficult to ascertain because of heterogeneity in growth rates. PMID- 3844409 TI - Creative nursing: processive care and more? AB - The authors describe a crisis point which led them from considering a reorientation of the present BSc (Nursing) curriculum at the University of Cape Town, South Africa to undertaking a radical revision of the degree programme. While examining final year students they realized that the nurses' excellent personal qualities apparent in everyday relationships, were not being used in their professional practice on hospital wards. It is suggested that this is due partly to an educational programme which neglected what the students already had (common sense and logic) and what they already knew from life experience and from instinct and intuition. It is also supposed that when hospital wards are their first clinical learning areas, nurses divorce patients and disease from the 'real' world, from the essentials of daily living and from the components of an individualized lifestyle. A staged process of learning experience, to include looking after healthy, elderly and disabled individuals in homes and institutions -with minimal nurse supervision--before exposure to hospital life, is advocated. In its present form the nursing process is seen as limiting the creativity of nursing practice and the authors suggest that further development of this approach is necessary if nursing science is to be interpreted as an art. Finally, the authors outline an experimental curriculum which takes cognisance of their experiences and syllogistic reasoning, together with a brief description of the first few months of its implementation at the University of Cape Town. PMID- 3844410 TI - Important clinical teacher behaviours as perceived by university nursing faculty, students and graduates. AB - This study compared the importance of five categories of clinical teacher behaviours as perceived by university nursing faculty, students and practising baccalaureate graduates. A survey tool, developed for this study, contained 47 items; each item describing a clinical teacher behaviour. Participants were asked to rate the importance of each item on a seven-point Likert-type scale. Results showed similar perceptions of the importance of clinical teacher behaviours between the three groups of participants. However, significant differences were found between all groups when the perceptions of students in each of the 4 years of the nursing programme, faculty and graduates were compared. These results indicate a greater variability among students than between students, faculty and practising baccalaureate graduates. The importance of this study lies not only in the perceptions of the three groups and the questions this raises, but also in the conflicting findings between this and other studies. PMID- 3844411 TI - A research-based method of selecting curriculum content. AB - This paper reports on a study concerning the opinions of sisters and nurse teachers regarding the relevance of learning objectives for a specific teaching and learning course for hospital and community sisters. The respondents were 29 sisters who had attended the course, 32 sisters who had not attended the course but who were potential future 'consumers' and 25 nurse teachers. The results showed that a majority of the respondents rated 29 of the objectives as essential and these were suggested as the nucleus of the core curriculum for future courses. Responses to nine of the objectives showed statistically significant differences between the groups. PMID- 3844412 TI - Has the discipline of nursing developed to the stage where nurses do 'think nursing'? AB - With the increasing complexity and changing conditions of nursing practice, as well as the encroachment of other professions on nursing's traditional domain, it is becoming increasingly important for nurses to gain insights into the nature of nursing knowledge and practice. This paper attempts to outline the meaning of the expression 'to think nursing' and the factors involved in such a capacity. The work of nurse scholars is then discussed in terms of their contribution towards developing the discipline of nursing to the stage where nurses do 'think nursing'. PMID- 3844413 TI - 'The more things change the more they stay the same': factors affecting the implementation of the nursing process. AB - One of the biggest problems currently facing the nursing profession is that of implementing the nursing process. Innovations in health care often elicit obstructions, and objective data which might help us to understand and overcome these implementation problems are lacking. The present study considered these problems by contrasting two groups of psychiatric nurses both of whom had received an in-service course in behaviour therapy. One group went on to implement this training by conducting behavioural nursing care plans with their patients, whereas the second group did not do so. A retrospective analysis of 25 variables associated with these groups of nurses indicated that neither subject variables, test scores nor learning during the course were good predictors of the nurses' implementations of the nursing process. An alternative basis for predicting and facilitating implementation is discussed. This focuses on institutional variables which may exert more control over the use of the nursing process than the personal characteristics of individual nurses. The implications of this analysis are important for the selection, training and motivation of nurses. PMID- 3844414 TI - Gynaecological nursing: a compromising situation. AB - Women's health has been a research concern since the growth of modern feminism, but few studies have examined the attitudes and opinions of nurses towards working with women patients. This exploratory study, using informal interviews with 30 gynaecology nurses, is a first attempt to fill this gap. The interviewees' attitudes and opinions revealed ambiguities and contradictions which led them both to identify with and distance themselves from their women patients and the doctors. It is suggested that gynaecological nurses occupy shifting positions in the status hierarchies of gender, nursing and medicine, and professional specialization. The way they define their role results from attempts to improve their status vis-a-vis others in these hierarchies, and to make compromises in order to evaluate their own status positively. Strategies are suggested for increasing their knowledge and skills based on the hypothesis that this would lead to greater clarity of role and job satisfaction, and a higher quality of patient care. PMID- 3844415 TI - Differential conduction of cold through barriers. AB - Despite the widespread use of ice packs in conjunction with ace bandages, padded ace bandages and compression dressings in the management of acute soft tissue trauma and sprains, the role of these barriers in the conduction of cold has not been adequately evaluated. Thermal probes were secured to both ankles of 62 healthy volunteers. The selected barrier was applied bilaterally and 500 g of chipped ice in a plastic bag was placed over the barrier on the right ankle for 30-45 minutes. A significant reduction in temperature of the right ankle was noted in all groups except in the padded ace group. The most rapid decrease in temperature was noted during the first 2 minutes of treatment. During the first minute, the surface temperature decreased an average of 22 degrees C (ace), 3.8 degrees C (dry washcloth), 5.2 degrees C (no barrier) and 5.4 degrees C (damp washcloth). After 10 minutes, the mean rate of cooling was 0.1-0.2 degree C and was approximately the same in all four groups. The Scheffe procedure indicated three homogeneous subgroups at 30 minutes: no barrier, damp washcloth; ace, dry washcloth; and padded ace. These findings question the clinical usefulness of the application of cold over padded aces and compression dressings and the use of a damp washcloth to 'protect' the skin from frostbite. PMID- 3844416 TI - Nurse/patient dependency--is it iatrogenic? AB - It is often assumed that nursing care is given in response to the patient's degree of incapacity. This study indicates that rather than nursing care arising as a response to patients' dependency, nursing care is producing dependency. A considerable proportion of the measured dependency of 168 elderly patients arose from the type of nursing care they received--it was iatrogenic. Task allocation nursing was found to be positively unhealthy for elderly long-stay patients, whilst individualized care (nursing process) was associated with lower patient dependency, a shorter hospital stay and a better chance of surviving the hospital stay. The findings demonstrate the inadequacy of nurse staffing formulas which are based on patient dependency. It is suggested that despite the rising numbers of very old people in the population, the elimination of nurse-induced dependency could reduce the level of dependency in geriatric wards. PMID- 3844418 TI - Development of a new statutory structure for nursing, midwifery and health visiting in the United Kingdom. PMID- 3844417 TI - Obesity. AB - While recognizing that many factors may contribute to the causation of ischaemic heart disease, this project attempts an in-depth examination of just one of them- obesity. The author has endeavoured to discover if there are sex differences in the incidence of obesity and whether or not obesity is related to age. Whilst recognizing the limitations of the small sample used in this project some tentative conclusions/speculations will be outlined. Some attempt has been made to discover if the average person is aware of what is meant by the term 'obesity' and if they see themselves as having this problem. Because of an intuition that people may become obese due to bad eating habits and ignorance about the nutritional value of certain foodstuffs, subjects were asked to list the calorific value of certain foods and their responses are discussed. A further attempt was made to ascertain whether the respondents had ever gone on a diet and if so, the type of diet and the success or otherwise of this measure. The subjects were further questioned to discover their level of knowledge regarding the possibility of certain disorders arising as a consequence of obesity and asked to outline what action they would take if they were faced with these consequences. Some conclusions have been drawn regarding the actions which would be taken when faced with crippling consequences. Finally, an attempt has been made to discover if some psychosocial states contributed to the causation of obesity or whether obesity leads to some psychosocial problems.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3844420 TI - Developments in post-basic nursing education. PMID- 3844419 TI - Achievements in basic nursing education. PMID- 3844421 TI - Creating colleges of nursing and midwifery in Scotland. PMID- 3844422 TI - The European dimension. PMID- 3844423 TI - Advanced nursing education. PMID- 3844424 TI - Who needs health maintenance? PMID- 3844425 TI - GSA: your communication tool. PMID- 3844426 TI - Nursing care for aged patients with rectal prolapse. PMID- 3844427 TI - Change through environmental interaction makes aging exciting. PMID- 3844428 TI - Helping the aged manage bowel function. PMID- 3844429 TI - OTC drugs and the elderly. PMID- 3844430 TI - "If I have to live, I want to walk". PMID- 3844431 TI - Do nurses know when patients have cognitive deficits? PMID- 3844432 TI - Osteoporosis: is it inevitable? PMID- 3844434 TI - Alzheimer's disease and depression. PMID- 3844433 TI - Linking the aged to support systems. PMID- 3844435 TI - Guardianship: a serious step as a last resort. PMID- 3844436 TI - Assessing needs of the rural elderly. PMID- 3844437 TI - Tissue-specific pretranslational regulation of complement production in human mononuclear phagocytes. AB - The net production of the complement protein C2, C4, and factor B differ among mononuclear phagocytes from peripheral blood and different tissues in experimental animals and in humans. To examine the mechanisms that regulate these differences in humans, the proportions of C2-producing cells, the average single cell production rate of C2, the posttranslational glycosylation and kinetics of secretion of C2 and factor B, and the amounts of C2 and factor B mRNA were examined in freshly isolated peripheral blood monocytes, monocytes maintained up to 2 wk in culture, and freshly isolated tissue macrophages from breast milk and bronchoalveolar lavage. In addition, the biosynthesis of two other proteins synthesized and secreted by mononuclear phagocytes, C3 and lysozyme, were examined. We report that despite comparable rates of C3 and lysozyme synthesis and similar processing and kinetics of secretion of C2 and factor B, the freshly isolated tissue macrophage differs from the monocyte-derived macrophage in the proportion of C2-producing cells, in the average single-cell production rate of complement, and in the amounts of specific C2 and factor B mRNA. These differences are tissue specific, because C2-specific mRNA content in bronchoalveolar macrophages is considerably greater than in breast milk macrophages, although the amounts of factor B mRNA are comparable. These data suggest that tissue-specific regulation of complement production in human mononuclear phagocytes occurs at a pretranslational level. These studies now provide a basis for investigation of the molecular effects of agents that modulate the biologic functions of monocytes and macrophages. PMID- 3844439 TI - Nursing in China. PMID- 3844440 TI - Pressure ulcer management in the neurologically impaired patient. AB - Wounds, such as pressure ulcers, are frequent complications of neurologic disorders. Recently, many new products have been developed to assist nursing service personnel in the prevention and management of problems of impaired skin integrity. This article reviews the physiology of wound healing, nursing assessment of risk factors, and pressure ulcer status. In addition, specific nursing interventions will be discussed as they relate to pressure ulcer management in the neurologically impaired patient. PMID- 3844438 TI - Factor B, the complement alternative pathway serine proteinase, is a major constitutive protein synthesized and secreted by resident and elicited mouse macrophages. AB - Factor B, the complement alternative pathway serine proteinase, a class III gene product of the major histocompatibility complex, is a major constitutive secretion product of mouse mononuclear phagocytes. This glycoprotein was synthesized and secreted by macrophages as a doublet of Mr 90,000 and 93,000 polypeptides that were immunoprecipitable with antibodies raised to human serum factor B, and that were indistinguishable from plasma factor B by immunoreactivity, peptide mapping, and molecular weight. Macrophage factor B was cleaved and activated to factor Bb- and Ba-like fragments by factor D and cobra venom factor. Some conversion of macrophage factor B to Bb-sized fragments occurred spontaneously in the conditioned culture medium after several hours. Factor B represented approximately 0.5% of newly synthesized protein and 4-6% of the secreted protein of resident peritoneal macrophages and macrophages elicited with thioglycollate broth, pyran copolymer, NaIO4, bacillus Calmette-Guerin, or Corynebacterium parvum. We detected synthesis of factor B immediately upon explanting these macrophages in culture; synthesis continued for several days in culture. The rate of secretion of factor B, as a proportion of total protein secretion in culture, remained constant with time. By radioimmunoassay, factor B antigens accumulated in the 24-h macrophage-conditioned culture medium at 2-10 nM, and was present in cell lysates at 4-8 nmol per 10(6) cells. We detected synthesis of factor B in bone marrow-derived macrophages as early as 5 d of culture. The P388D1 macrophage line synthesized factor B, but mouse L cells did not. In contrast, apolipoprotein E, another secreted protein of macrophages, was secreted by resident and thioglycollate-elicited macrophages but not by freshly harvested pyran copolymer-activated macrophages. Its synthesis was initiated at day 9 in culture of bone marrow-derived macrophages. These data support the classification of factor B as a constitutive biosynthetic and secreted protein of immature and mature macrophages in various states of activation. Production of factor B was modulated by treatment of macrophages in vivo or in culture with bacterial lipopolysaccharide endotoxin, which increased the synthesis, secretion, and accumulation of factor B up to 11-fold. PMID- 3844441 TI - A holistic approach to identifying factors associated with an altered pattern of urinary elimination in stroke patients. AB - Urination dysfunction is a problem commonly associated with stroke. However, the types of urination abnormalities have yet to be adequately classified. An exploratory, descriptive study was conducted to determine the definition and classification of urination dysfunctions amenable to nursing diagnosis and therapy. A model was constructed for this study that enumerated psychological, social and biological factors and their relationships to urination dysfunction. An abstracting form was developed for obtaining relevant data from discharged patients' records. The sample consisted of thirteen stroke patients discharged from a rehabilitation service. Tabular presentations and comparisons suggested patient characteristics that are pertinent to the diagnosis and treatment of urination dysfunction. This study was an initial step in formulating a theory about urination dysfunction. PMID- 3844442 TI - Arnold-Chiari malformation--a closer look. AB - Arnold-Chiari malformation (ACM) is a malformation of the cervico-medullary junction characterized by displacement of the cerebellar tonsils, the brainstem and the fourth ventricle into the upper cervical canal. The clinical presentation of this anomaly is largely dependent upon age at onset, associated pathology, and the presence of hydromyelia. Considerable controversy exists within the literature concerning pathogenesis, signs and symptoms, diagnosis, and successful treatment of Arnold-Chiari malformation. This article will examine these issues and discuss the nursing management of patients with this syndrome. PMID- 3844443 TI - Adrenoleukodystrophy: a fatal disorder with new opportunities for prevention and treatment. AB - Adrenoleukodystrophy is an X-linked disorder characterized by adrenal insufficiency and progressive demyelination of the cerebral white matter. Young boys usually become symptomatic during pre- or primary school years and follow a time-variable, downhill, terminal course. Diagnostic and carrier testing and prenatal diagnosis are available. Several treatments have been used but presently treatment is symptomatic. Nursing in adrenoleukodystrophy involves management of issues including but not limited to diagnosis, genetics, counseling, physical care, emotional care, family care and research. PMID- 3844444 TI - Alterations in movement: nursing assessment and implications. AB - Physical assessment for nursing purposes is necessarily different from that of medicine because the focus of nursing is to diagnose and treat human responses to disease rather than the disease itself. This article will consider nursing assessment, pathophysiology, implications for daily living, and nursing implications for selected functional aspects of movement, namely seeing, eating, expressing (facially), speaking, moving, and walking. PMID- 3844445 TI - The dilemma of cerebral vasospasm treatment. AB - Symptomatic cerebral vasospasm following subarachnoid hemorrhage from ruptured saccular aneurysms is a major factor in the neurologic deterioration of these patients. Many therapeutic interventions have been proposed to treat this cerebral vasospasm; however, the most effective means to counteract this development still eludes the health care team. Faced with this dilemma, recent investigators have examined subarachnoid blood as visualized on CT scan. These studies have enabled them to identify those patients most at risk for developing symptomatic cerebral vasospasm. Predicting the occurrence as well as the severity and location of symptomatic cerebral vasospasm will facilitate early implementation of preventative measures. This knowledge may help to minimize the frequent unfavorable outcomes following subarachnoid hemorrhage and the subsequent development of vasospasm. The neuroscience nurse can apply this information to the clinical setting by being able to identify those patients at high risk for developing symptomatic cerebral vasospasm, to improve assessment skills, and to plan and anticipate the patient's future needs. A case study is offered to illustrate how this is accomplished. PMID- 3844446 TI - The tenure of directors of nursing. AB - Director of nursing (DON) tenure is often a question of debate, with some believing that there is rapid turnover among DONs. A survey of university and university-affiliated hospitals was conducted to assess turnover among DONs and the reasons they leave their positions. Over a 10-year period, hospitals averaged 2.5 DONs per hospital. The majority of hospitals (57%) had one to two DONs and 19% had four or more DONs during this 10-year period. Fifty percent of the current DONs have been in their positions for 5 or more years. Termination and requested resignation were cited most frequently as the reasons past DONs left their positions (40%). In spite of the high termination rate, both DONs and chief executive officers (CEOs) feel that they work effectively together. PMID- 3844447 TI - Team building: key to executive success. AB - The key to executive success is management of the information overload provided by today's high technology era. Team building, through identification of behavioral styles, helps to enhance self-esteem, utilize inherent skills of individuals, and maximize decision making. The style of the team leader who shares leadership promotes communication patterns that lead to participatory management and harmony within institutions. PMID- 3844448 TI - Cost per RN hired. AB - Costs of recruiting, hiring, and training new staff members can be significant. This article demonstrates a method for analyzing the components of these costs to target areas where improved efficiency can lead to lower costs. PMID- 3844449 TI - "Can a non-bonder be an effective mentor"? PMID- 3844450 TI - Research Proposal: The practical imagination at work. PMID- 3844451 TI - Second generation primary nursing. A new agenda. AB - Since its inception in the late 1960s, primary nursing has been the subject of much misinterpretation, as well as healthy adaptation. Over the last 15 years, the first generation of primary nursing users have shown that professional nursing is ultimately enhanced, not through changes in staffing patterns, but in the locus of accountability. The second generation primary nursing users face the challenge of developing a culture that integrates the realities of care delivery with the evolving professional status of nursing. PMID- 3844453 TI - Public speaking can be improved. AB - A poor presentation detracts from an informed and timely message. Nursing administrators need to communicate effectively via public speaking to achieve their personal and organizational goals. While each one develops a unique presentation, style commonalities of public speaking apply to each of us and include getting organized to speak, tailoring the message to the audience, adapting to audience feedback, and, of key importance, delivering an appealing presentation. PMID- 3844452 TI - Developing a productive nursing research program in a clinical institution. AB - Many nursing administrators are faced with the challenge of developing productive nursing research programs. This article describes a systematic process that develops a framework that can be used to establish a nursing research program in a clinical institution. With this process, each newly developed phase of the program is integrated into the program's framework and is consistent with the previously developed elements. This article discusses specific ways to maximize the program's productivity, credibility, and scientific contribution by focusing time and resources on research and estimating potential studies' viability. PMID- 3844454 TI - Developing a department newsletter. AB - Effective communication and recognition of individual excellence are important in any profession. We in nursing have recognized this fact and often incorporate these into our professional practice. An inhouse hospital nursing newsletter is one of the most recent developments that hospital departments of nursing use to meet these goals. This article attempts to demystify the process of establishing an editorial board, identifying topics, setting deadlines, working with a printer, and formulating a budget. PMID- 3844455 TI - "Mentors" and "mentoring". PMID- 3844456 TI - Disseminating research: the scholar's commitment. PMID- 3844457 TI - Auto safety. Pregnancy and the newborn. AB - An overview of the principles, risks, and benefits, and proper usage of restraints is presented in reference to both the pregnant woman and the newborn. Also, the types and advantages of each restraint are reviewed. Finally, aspects of the nurse's role in the education of new parents during the pre- and postnatal periods are discussed. In this discussion, specific suggestions are given to meet the overall goal of safer auto travel for the pregnant woman and newborn. PMID- 3844458 TI - The art of induction/augmentation of labor. AB - To manage safely and effectively oxytocin administration, nurses must be knowledgeable in theory and skilled in technique. Current theory is explored regarding initiation of labor and cervical ripening. The pharmacology of oxytocin, uterine response to endogenous and exogenous stimulation of oxytocin, and current methods being used to induce/augment labor are discussed. A protocol to provide safe, effective guidelines for managing induction/augmentation of labor is provided. The goal in oxytocin administration is to use the minimum dose necessary to facilitate and maintain an effective uterine response and avoid hyperstimulation and fetal distress. PMID- 3844459 TI - Pregnancy and cardiac valvular prostheses. AB - Many women who have had cardiac valve replacements have reached or will soon be reaching childbearing age. Pregnancy exposes these women to potential problems resulting from the previous valvuloplasty. The three most common problems in this population--thromboembolism, infective endocarditis, and myocardial decompensation are discussed through a review of current literature. Preventive measures and treatment modalities are presented in order to assist nurses caring for these clients during their pregnancy. PMID- 3844460 TI - The birth system in Germany. AB - Culture affects birth practices in a given country or geographic area. Some current birth practices in West Germany in the areas of prenatal care, prepared childbirth, intrapartal care, and postpartal care are discussed. While both the United States and Germany are considered modern countries in terms of technological advancement and educational facilities, very different values and practices are evident in the birth systems of the two countries. PMID- 3844462 TI - Peers, parents, and partners. Determining the needs of the support person in an abortion clinic. AB - To ascertain how clinics might better meet the needs of support persons accompanying clients for an abortion, data were gathered through a questionnaire that related 25 statements to Maslow's five categories of need. The expressed needs of each support person were assessed and then compared by three groups designated by their relationship to the abortion client as either female peer, parent, or male partner. Significant differences (P less than 0.05) among categories of support persons were demonstrated on six of the 25 statements, a finding that suggests that abortion clinics should develop and implement counseling programs specific to the needs of each of the different groups. PMID- 3844461 TI - Women's perceptions of first trimester spontaneous abortion. AB - Fifteen to twenty percent of all pregnancies end in spontaneous abortion. For many women, this loss is nearly the equivalent of the loss of a real baby. To explore the complexity of women's responses to spontaneous abortion, nine women were given a questionnaire to complete regarding experiences and behaviors at the time of the miscarriage. The data revealed that each woman was affected, to some degree, by her experience with a spontaneous abortion. A comprehensive psychologic approach to this special client is needed to help more effectively the woman who aborts in the first trimester cope with the very real loss of an infant. PMID- 3844463 TI - Expectation and experience in alternative and conventional birth. AB - A study was conducted to determine if differences exist between the clients of two types of health-care services with regard to the childbirth experience. Nurse midwife-attended and physician-attended births were compared in terms of the birthing woman's expected and actual participation in her own birthing experience. Questionnaires were completed before and after delivery. The nurse midwife group both anticipated and experienced significantly more active participation in the birth than the physician group. Also, women attended by nurse-midwives viewed themselves and their partners as the most important individuals for contributing to the satisfaction of the experience while women attended by physicians more often viewed the infant as most important. Differences between the study groups were also found regarding the perceived importance of the birth attendant and the staff nurse. PMID- 3844464 TI - Developmental issues and the choice of feeding method of adolescent mothers. AB - Approximately one million teenagers become pregnant each year, resulting in over 600,000 live births. An exploratory study was conducted to look at attitudes of adolescent mothers toward breastfeeding. Striking differences were found in the responses between groups of breastfeeding and bottlefeeding mothers. The effect of developmental needs and levels on the choice of feeding method was explored. PMID- 3844466 TI - Part I: fluid balance. PMID- 3844465 TI - Reduction of contact factors in sickle cell disease. AB - Surface-mediated reactions of clotting were compared in 21 black children with homozygous sickle cell disease, 12 age-matched controls, and 15 adults. Both the coagulant and antigen titers of Hageman factor (factor XII) were decreased in asymptomatic patients compared with those in the control groups. These findings were associated with slight but significant reductions in the plasma titers of prekallikrein and high molecular weight kininogen. A further decrease from the initially low titers of these contact factors was observed during vaso-occlusive crises. Additionally, we observed a disparate relationship between Hageman factor coagulant activity and its antigen titers. These data provide evidence for reduction of the contact factors in patients with homozygous sickle cell disease. PMID- 3844467 TI - The heart--taking a closer look. PMID- 3844468 TI - Pre-dialysis patient education. PMID- 3844470 TI - Preventing adverse drug reactions in patients with renal failure. PMID- 3844469 TI - Monthly home patient checklist: a dialysis assessment tool. PMID- 3844471 TI - Adolescents with end stage renal disease: indications for nursing interventions. PMID- 3844472 TI - Nutritional cornucopia. PMID- 3844473 TI - Dialysis decision: unsolved controversy. PMID- 3844474 TI - Facts through fiction. Teaching health by telling stories. PMID- 3844475 TI - Dialog with death. PMID- 3844476 TI - Self-sacrifice and self-destruction. A christian looks at suicide. PMID- 3844477 TI - Klinefelter syndrome. PMID- 3844478 TI - Depression in women. PMID- 3844479 TI - Advancing the science of victimology. PMID- 3844480 TI - Hearing voices. PMID- 3844481 TI - [Administration of massive dosages of immunoglobulin for the treatment of juvenile rheumatoid arthritis]. PMID- 3844482 TI - [Luteinized unruptured follicle syndrome]. PMID- 3844483 TI - [Primary care of patients with cerebrovascular disorders]. PMID- 3844484 TI - [Nursing keypoints in the primary care of patients with cerebrovascular disorders]. PMID- 3844485 TI - [Factors involving the examiner affecting the blood pressure reading--evaluation of individual differences in the hearing and visual functions]. PMID- 3844486 TI - [Ureterostomy: its role and significance]. PMID- 3844487 TI - [WHO stand and universal trends in education of diabetic patients]. PMID- 3844488 TI - [Diagnosis and treatment of visual disturbances of the aged]. PMID- 3844490 TI - [Diagnosis and treatment of disorders of somatosensory perception of the aged]. PMID- 3844489 TI - [Diagnosis, treatment, and nursing of hearing disorders of the aged]. PMID- 3844491 TI - [Diagnosis and treatment of agnosia of the aged]. PMID- 3844492 TI - [Sensory disturbances of the aged and rehabilitation]. PMID- 3844493 TI - [Sensory disturbances of the aged and nursing interactions]. PMID- 3844494 TI - [Nursing problems of aged patients with sensory disturbances and establishment of a nursing standard]. PMID- 3844495 TI - [Nursing of aged patients with visual disturbances--accident prevention at an ophthalmology ward]. PMID- 3844496 TI - [Guidance and assistance for aged patients with agnosia]. PMID- 3844497 TI - [Nursing of an aged patient with dementia and a visual disorder--changes in daily activities associated with cataract extraction]. PMID- 3844498 TI - [Nursing of an aged patient with a hearing disorder]. PMID- 3844499 TI - [Mediation and solution of interpersonal problems in a family composed of an aged couple with hearing disorders and persecution complexes, their son and his wife]. PMID- 3844500 TI - [Space for life activities of visually handicapped--a trial at a home for aged visually-handicapped patients]. PMID- 3844501 TI - [Hearing evaluation of patients with hearing disorders and the role of language therapists--with special reference to senile hearing disorders and auditory agnosia]. PMID- 3844502 TI - [A methodology in an interaction by listening--an interaction with new patients at the reception window for assignment to a department]. PMID- 3844503 TI - [Changes in sensory perception and the neurological mechanism associated with aging]. PMID- 3844504 TI - [Evaluation of the extent of nursing of aged patients--nursing following surgical therapy]. PMID- 3844505 TI - [Intranasal instillation of desmopressin for the treatment of refractory enuresis]. PMID- 3844506 TI - [Reconstruction of the cruciate ligament of the knee using an artificial ligament]. PMID- 3844507 TI - [Triage of emergency patients and keypoints at the initial care]. PMID- 3844508 TI - [Respiratory and circulatory care at the emergency outpatient service]. PMID- 3844509 TI - [Nursing planning of initial care at the emergency clinic]. PMID- 3844510 TI - [Indication and timing of emergency surgery]. PMID- 3844511 TI - [Diagnostic tests and preoperative treatment necessary for emergency surgery]. PMID- 3844513 TI - [Emergency surgery of brain diseases]. PMID- 3844512 TI - [Anesthesia in emergency surgery]. PMID- 3844514 TI - [Emergency surgery of thoracic diseases]. PMID- 3844515 TI - [Treatment at the emergency clinic and emergency surgery of abdominal conditions including abdominal injuries]. PMID- 3844516 TI - [Emergency surgery of the extremities]. PMID- 3844517 TI - [preoperative nursing of patients undergoing emergency surgery]. PMID- 3844518 TI - [Preparation of the operating room for emergency surgery]. PMID- 3844519 TI - [Nursing during thoracotomy and laparotomy of DOA (dead on arrival) patients]. PMID- 3844520 TI - [Nursing of patients with severe injuries undergoing emergency surgery]. PMID- 3844521 TI - [Nursing of a patient with subarachnoid hemorrhage following emergency surgery of ruptured cerebral aneurysm]. PMID- 3844522 TI - [Nursing of a patient with a thoracic injury--a case of a penetrating thoracic injury]. PMID- 3844523 TI - [Postoperative care of a patient with perforating duodenal ulcer associated with hemorrhaging gastric ulcer]. PMID- 3844524 TI - [Nursing of a patient with multiple fractures of the left femur]. PMID- 3844525 TI - [Medicine of tomorrow and the role of nurses--expectation of a physician]. PMID- 3844526 TI - [Treatment of refractory diseases: a discussion]. PMID- 3844527 TI - [Automated maternity care]. PMID- 3844528 TI - [Premenstrual tension--causes and treatment]. PMID- 3844529 TI - [Health education of risk groups in Finland]. PMID- 3844531 TI - Career choice gaming to reduce absenteeism. PMID- 3844532 TI - Power in nursing. PMID- 3844530 TI - [Perinatal information base]. PMID- 3844533 TI - For new grads--picking an employer. PMID- 3844534 TI - Peer assistance program revises guidelines. KSNA further refines its program to help chemically dependent nurses. PMID- 3844535 TI - A "second opinion"... Increasing your personal power. PMID- 3844537 TI - [Nursing care in the International Red Cross Committee. A matter of wits and survival]. PMID- 3844536 TI - If your feet are cold--put on a hat. PMID- 3844538 TI - [Testimony of a nurse. 21 hours in the surgical hospital of Kab Cherng]. PMID- 3844539 TI - [Nutritional activities of the International Red Cross Committee. Breaking the vicious circle]. PMID- 3844540 TI - [Sanitary activities. We extend the activities of engineers]. PMID- 3844541 TI - [Mission to Tripoli (Lebanon). I have attempted the experience]. PMID- 3844542 TI - [Mission to South Lebanon. No education can really prepare you]. PMID- 3844543 TI - [Mission to Pakistan. Working in the perspective of a progressive withdrawal]. PMID- 3844544 TI - [International Red Cross Committee's mission to Lebanon. Malleability from action and pursuit]. PMID- 3844545 TI - [Nursing aspects of urinary incontinence. Incontinence is not the fate of the aged]. PMID- 3844546 TI - [2 Swiss nurses attend continuing education course in England. Promoting continence: a conscious process]. PMID- 3844547 TI - [Work meeting in the Gottlieb-Duttweiler Institute. Cost control and stress on cost of personnel?]. PMID- 3844548 TI - [International Red Cross Committee's mission in El Salvador. Aid and contact with the outside world]. PMID- 3844549 TI - [International Red Cross Committee's mission in Uganda. Refugee within one's own country]. PMID- 3844550 TI - [The child with hydrocephalus]. PMID- 3844551 TI - [Tuberculosis and its control. Attacked but not conquered]. PMID- 3844552 TI - [Ambulatory childbirth. 3 hours after childbirth home again]. PMID- 3844553 TI - [Annual meeting 1984 of the Society for Hospital Hygiene. The effectiveness of hospital hygiene measures]. PMID- 3844554 TI - [Art as therapy]. PMID- 3844555 TI - [Continuing education meeting for nurse anesthetists. The patient with respiration disorders]. PMID- 3844556 TI - [Students as work animals?]. PMID- 3844557 TI - [Aggressiveness of nursing personnel]. PMID- 3844558 TI - [Professional activities and personality. Images of the nurse]. PMID- 3844559 TI - [Another point of view. Children's image of the nurse]. PMID- 3844560 TI - ["Khadafi" patients and "Terre des Hommes". What has become of them?]. PMID- 3844561 TI - [Signs which unwittingly betray us. Transparency of gestures]. PMID- 3844562 TI - [Indications for and results of antibiotic prophylaxis]. PMID- 3844563 TI - [Stomach cancer caused by nitrosamine. Role of vitamin C for its prevention]. PMID- 3844565 TI - [Every patient his or her nurse. Primary nursing]. PMID- 3844564 TI - [When nursing home residents make their caretakers heir]. PMID- 3844566 TI - [A new profession with future possibilities: veterinary practitioner]. PMID- 3844567 TI - [Causes, clinical aspects and therapy of kidney stones]. PMID- 3844568 TI - The role of focus group interviews in designing a smoking prevention program. AB - The purpose of this study was to gather data that would be applied to the design of an adolescent smoking prevention program. Focus group interviews, a form of qualitative research used in social marketing, were used to gather information from the adolescent participants to ensure that the program would reflect the needs and interests of the target population. The participants consisted of sixth graders from urban and rural areas, and black and white populations of low socioeconomic status. A total of eight focus groups was conducted with eight participants in each focus group. Activities such as auctions, roleplays, and guided discussions were carried out to learn about participant likes, dislikes, values, ideas, and abilities to turn down cigarettes. Following substantiation by a quantitative evaluation, this information was incorporated into the program and materials to ensure the maximum effectiveness of the intervention. PMID- 3844569 TI - Knowledge of toxic shock syndrome among adolescent females: a need for education. AB - Toxic shock syndrome (TSS) has been identified as a potentially fatal but preventable illness that causes disease, disability, and premature death, especially among adolescent females using high absorbency tampons. In 1983 the authors surveyed 129 high school girls in three midwestern senior high schools to determine the relationship between choice of a menstrual product and knowledge about toxic shock syndrome. The study found that the knowledge level of adolescent females about TSS was fragmented and inaccurate. No significant relationship was found between choice of a menstrual product and knowledge about TSS; very little variation existed between the scores for napkin users, regular tampon users, and high absorbency tampon users. Results of the study are discussed in terms of the implications for the health of adolescent females. Recommendations are offered for utilizing health professionals, parents, and the news media in the development of toxic shock education programs. PMID- 3844570 TI - Health variables and school achievement. AB - Students who failed the Cognitive Skills Assessment Battery (CSAB) at the beginning of first grade were compared to those who passed on health factors, health history, family characteristics, socioeconomic factors, health ratings by the classroom teacher and the school nurse, and achievement on the Basic Skills Assessment Program (BSAP) at the end of first grade. Significant differences were found on family characteristics, birth history, and health ratings. Only ear problems were significantly related to the academic variables. Health problems were found to be moderately related to academic variables. This relationship is influenced by family socioeconomic variables. PMID- 3844571 TI - Project SCAN: counseling teen-age parents in a school setting. AB - A three-year interdisciplinary intervention program with adolescent parents and expectant parents was implemented within a public school system. The program combined educational and counseling efforts within a regular school to provide information, support, and the opportunity for personal growth. Program organization and implementation are discussed as well as implications for health professionals. There was evidence that the program was effective with respect to an important goal: keeping the students in school. For the three years of the project, significantly more program participants remained in school than control group members. PMID- 3844572 TI - Correlates of temperate and intemperate attitudes toward alcohol use. AB - The relationship between alcohol attitudes and the personality variables of locus of control and authoritarianism was investigated for a sample of 791 high school students. Authoritarianism was negatively related to indiscriminate attitudes and positively related to responsible attitudes toward alcohol use for both males and females. The locus of control dimension correlated with alcohol attitudes for females only. The findings provide information useful in the identification of adolescents at risk for problematic drinking. PMID- 3844573 TI - Ten smoking education programs for schools. PMID- 3844574 TI - Reaffirming the need for parent involvement in health education. PMID- 3844575 TI - Parental evaluations of a sex education course for young adolescents. AB - Parental evaluations of their children's participation in a school-based sex education program for young adolescents were conducted by interview using a structured questionnaire. Parents were asked questions concerning: course objectives, course content, instructional materials, expectations, perceived effectiveness, and important outcomes of the instruction. The sex education course was six weeks in length, meeting for 50 minutes daily. The program was comprehensive and did not avoid areas typically thought of as controversial. The results indicated parental support for the sex education program and the evaluation provided useful information for program revision. An examination of the findings suggest a paradox in that parents want their children to be informed about sexuality and to be able to make decisions that would avoid problems, but they are uneasy about dealing directly with sexual behavior. PMID- 3844576 TI - A study of current school nurse practice activities. AB - In this paper a survey of activities of school nurses will be described. A brief summary of the history of school nursing is included as an introduction to the analysis of the current activities of school nurses. Five current school nurse activity clusters are identified from findings of a study of activities: physical, supportive, educative, administrative, and clerical. The development and implementation of administrative skills are cited as major challenges for school nurses in the 1980s. PMID- 3844577 TI - The self-care motivation model: theory and practice in healthy human development. AB - Effective health education and behavior motivation programs are needed to promote the compliance of children and young adults with preventive health care practices. Health promotion and primary prevention programs must consider the entire individual as well as his or her environment if positive behavior changes are to be maintained. This paper introduces an innovative model for self-care motivation curriculum development. The model prescribes the use of value clarification, enhanced physical/cognitive/affective awareness, positive lifestyle choices, and self-reinforcement skills training whereby individuals learn to become self-motivated and reinforcing agents for their own primary preventive health practices. It is theorized that by developing self-care and self-regulation skills, students will achieve and maintain higher levels of wellness, thus improving the quality of their lives and ensuring healthy human development. PMID- 3844578 TI - The impact of aging on human sexuality. AB - Review of gerontological and medical literature reveals the need for education for lay persons and professionals about the effects of the aging process on human sexuality. Primary prevention of psychosocial problems and sexual dysfunction could be abated by including accurate information about sexuality and aging and effective communication techniques in sexuality education programs, including those with young adults. In addition, professional preparation of health educators must include the skills and knowledge needed in this area. PMID- 3844579 TI - The prevalence of intestinal parasites in children living in an unincorporated area in rural northern Florida. AB - A survey was conducted to assess the prevalence of intestinal parasitism in 65 native-born preschool and school-age children living in an unincorporated area of northern Florida. Fifty-seven percent of the children were found to be infected with intestinal parasites. Sixty-eight percent of males surveyed and 47% of females had either single or multiple infections. Prevalence was greatest in the five-10-year-old age group. For the total child population surveyed, parasitic infections in order of most to least prevalent were ascariasis (32%); giardiasis (29%); trichuriasis (14%); and hookworm (2%). PMID- 3844580 TI - The First Lady's drug awareness campaign: questions and answers from Mrs. Nancy Reagan. PMID- 3844581 TI - The "nurse" in school nursing. PMID- 3844582 TI - Nation's first nurse-midwifery chair endowed at frontier school. PMID- 3844583 TI - The silent killer: shaken child syndrome goes unnoticed. PMID- 3844584 TI - Implementation of nursing diagnosis at Central State Hospital. PMID- 3844585 TI - Computer system support. PMID- 3844586 TI - Legal issues of nursing practice. PMID- 3844587 TI - Patient education by closed-circuit television. PMID- 3844589 TI - Why baccalaureate education? PMID- 3844588 TI - RN to BSN: choose a program that is right for you. PMID- 3844590 TI - Administrators: on the cutting edge of changes in health care. PMID- 3844591 TI - MCH Nurse Achiever: Patricia Watkins, RN, BSN, PNP. Interview by Sheila Ward. PMID- 3844592 TI - Guidelines to facilitate decision making in giving/accepting assignments. PMID- 3844593 TI - Mask wearing in the labour ward. PMID- 3844594 TI - Exeter midwives' Advisory Centre. PMID- 3844595 TI - Pseudomonas aeruginosa in a neonatal unit. PMID- 3844596 TI - RCM evidence to--the Pay Review Body for nursing and midwifery staffs and the professions allied to medicine 1985. PMID- 3844597 TI - The role of the obstetric anaesthetist. PMID- 3844598 TI - Counselling for midwives, health visitors & nurses. PMID- 3844599 TI - Excision and infibulation: a painful practice. PMID- 3844600 TI - What is a nurse? PMID- 3844601 TI - Carbohydrate composition of the second, third and fifth components and factors B and D of human complement. AB - The carbohydrate composition of the second, third and fifth components of human complement (C2, C3 and C5) and of factors B and D was determined employing gas chromatographic and mass-spectrometric methods. C2 was found to contain 15.9% carbohydrate composed of fucose, galactose, mannose, N-acetylglucosamine and N acetylneuraminate (approximate molar ratio 1:4:9:9:4). N-acetylglucosamine and mannose (approximate molar ratio 1:4), amounting to 1.7% of the mass of the molecule, were the only monosaccharides detected in C3. C5 contained 3.8% carbohydrate composed of galactose, mannose, N-acetylglucosamine and N acetylneuraminate (approximate molar ratio 2:4:4-5:2). The carbohydrate moiety of B consisted of fucose, galactose, mannose, N-acetylglucosamine and N acetylneuraminate (molar ratio 1:2:3:4:2). The total carbohydrate content of B was estimated at 8.6%. In addition to these monosaccharides, glucose (0.4-0.9%) was also detected in all preparations analysed. Glucose was the only sugar detected in D. PMID- 3844602 TI - A personal experience. PMID- 3844604 TI - Wot--No swab rack? PMID- 3844603 TI - Interface. Hazards to patients during surgery. No. 4. Nerve injuries. PMID- 3844605 TI - 2nd Congress of German speaking theatre nurses. PMID- 3844606 TI - Training for the ward sister. PMID- 3844608 TI - Paediatric orthopaedic care. PMID- 3844607 TI - The Kings Fund Sister Training Course. PMID- 3844609 TI - Types of tourniquet and their maintenance. PMID- 3844611 TI - Effects of methylemethacrylate bone cement. PMID- 3844610 TI - The Banks-Salford rod technique for spinal stabilization in malignancy. PMID- 3844613 TI - Preparation for surgery--a playworkers view. PMID- 3844612 TI - Helping children cope with a visit to theatre. PMID- 3844614 TI - Not so much a system, more a way of life. PMID- 3844615 TI - Principles and practice of AO. PMID- 3844616 TI - So you're going to have an operation. PMID- 3844618 TI - Royal College of Nursing. The last straw. PMID- 3844617 TI - Educators need to be more flexible. PMID- 3844619 TI - Gravest concern about such dereliction of responsibility towards patients. PMID- 3844620 TI - Too much talk and not enough action to solve problems of elderly. PMID- 3844621 TI - College fears government tax on pensions. PMID- 3844622 TI - First nurses appointed DHA general managers. PMID- 3844623 TI - Stand up and be counted. PMID- 3844624 TI - Royal College of Nursing: AIDS and the media. PMID- 3844625 TI - Experience made great by their positive attitudes, wisdom and clinical expertise. PMID- 3844626 TI - The role of the nurse personnel officer could become extinct. PMID- 3844627 TI - College welcomes maternity services advisory group's report. PMID- 3844628 TI - CLR (Committee on Labor Relations) group to study contracts in the NHS. PMID- 3844629 TI - Royal College of Nursing. Fresh approach. PMID- 3844630 TI - Get out of the sluice, Minister--there is a limit to slices available whatever cake size! PMID- 3844631 TI - Neither sensationalism nor balanced discussion has resulted in a good strategy on AIDS. PMID- 3844633 TI - Prison practicum scores points with students and inmates. PMID- 3844632 TI - Urinary kallikrein excretion in glomerulonephritis and nephrotic syndrome. AB - To assess the possible role of the renal kallikrein-kinin system in the pathogenesis of glomerulonephritis (GN), 24 h urinary kallikrein excretion (Uka) was measured in normal controls and in 32 patients with GN, 16 of whom had nephrotic syndrome. Compared with controls, Uka was decreased in GN without nephrotic syndrome (4.6 +/- 2.8 nkat day-1, controls 11.5 +/- 3.5 nkat day-1) but was markedly increased in patients with nephrotic syndrome (26.7 +/- 9.9 nkat day 1). The increased kallikrein excretion in nephrotic syndrome was not explained by leakage from plasma, protein binding of active kallikrein, passive 'washout' due to changes in sodium and water excretion, or by increased activity of the renin angiotensin-aldosterone system, but may relate to changes in extracellular volume, plasma oncotic pressure and volume, or other intrarenal haemodynamic or hormonal factors. Increased activity of the renal kallikrein-kinin system is not a uniform finding in glomerulonephritis, but may be an important aspect of nephrotic syndrome. PMID- 3844634 TI - Keeping a university well with a health promotion clinic. PMID- 3844635 TI - "You ain't seen nothing yet:" fight for federal funding of nursing education heats up. PMID- 3844636 TI - Faculty expertise in practice--a school succeeding. PMID- 3844637 TI - A nurse-managed clinical practice unit: Part I--The positives. PMID- 3844638 TI - Implementing a critical care practicum. PMID- 3844639 TI - A women's clinic in a university setting. Faculty and student practice. PMID- 3844640 TI - Integrating cultural content into the nursing curriculum. PMID- 3844641 TI - Summer camp: an overlooked site for faculty clinical practice? PMID- 3844642 TI - Toward a new definition of creativity. PMID- 3844644 TI - 8 rules to remember when caring for the patient with a Swan-Ganz catheter. PMID- 3844643 TI - Nursing diagnosis: keystone of your care plan. PMID- 3844645 TI - Drawing Robbie into a circle of love: just in time. PMID- 3844646 TI - Autotransfusion is here--are you ready? PMID- 3844647 TI - Heed the early warning signs of peripheral vascular disease. PMID- 3844648 TI - Assessing breath sounds. PMID- 3844649 TI - Doing it better. Helping a laryngectomy patient go home. PMID- 3844650 TI - Turn conflict into cooperation. PMID- 3844651 TI - Sharing. "Only" a dream. PMID- 3844652 TI - Sharing. No more Dracula jokes, please. PMID- 3844653 TI - Look in and on the patient's chart for allergy information. PMID- 3844654 TI - Understanding cardiac output and the drugs that affect it (continuing education credits). PMID- 3844655 TI - Discharging the critically injured patient against medical advice. PMID- 3844656 TI - New analgesic therapy relieves cancer pain without oversedation. PMID- 3844657 TI - You can drive back infection if you know where to make your stand. PMID- 3844658 TI - Action stat! Insulin shock. PMID- 3844659 TI - Caring for the postoperative patient with an abdominal drain. PMID- 3844660 TI - Guidelines for giving bad news by phone. PMID- 3844661 TI - The littlest instructor. PMID- 3844662 TI - The way to go--from conflict to collegiality. PMID- 3844663 TI - Protecting yourself legally after a patient's injured. PMID- 3844664 TI - The slow-code dilemma. PMID- 3844665 TI - What nurses think of computers. PMID- 3844666 TI - Recognizing and responding to increased I.C.P. PMID- 3844667 TI - Nose-to-nose conflict: here's how to find the middle ground. PMID- 3844668 TI - Legal risks from loving families. PMID- 3844669 TI - The most difficult person I've ever worked with. Maria was a master of intimidation. PMID- 3844670 TI - Improving your laugh life. PMID- 3844671 TI - Professional style: an update. Clothes speak louder than words. PMID- 3844672 TI - Court case: poor patient teaching. PMID- 3844673 TI - Seven steps to staff reduction. PMID- 3844674 TI - Reducing stock piles improves cost effectiveness. PMID- 3844675 TI - Productivity: how much does this job mean? PMID- 3844676 TI - Collective bargaining: serving the common good in a crisis. PMID- 3844677 TI - Maintaining CCU skill: a time to check it out. PMID- 3844679 TI - Six steps to personal fulfillment in nursing. PMID- 3844678 TI - Interunit rotation: a chance to choose. PMID- 3844680 TI - Practical management course. Module 16: managing the underachiever. PMID- 3844681 TI - Occupational health nurse's liability. PMID- 3844682 TI - Art & science of management. Caught in the middle. PMID- 3844684 TI - Law for the nurse manager. Right of privacy: limit. PMID- 3844683 TI - Survival of the slickest. PMID- 3844685 TI - Managing the intermediate product. PMID- 3844686 TI - Moral: how can I do what's right? PMID- 3844687 TI - Product selection in the hospital: controlling cost. PMID- 3844689 TI - PNA: supervising advanced practice nurses. PMID- 3844688 TI - Materials management: a model for product review. PMID- 3844690 TI - Practitioner vs. bureaucrat: professions in conflict. PMID- 3844691 TI - Practical management course. Module 17; whole brain management: part 1. PMID- 3844693 TI - On the cutting edge. PMID- 3844692 TI - Art & science of management. So you want to be a leader? PMID- 3844694 TI - The older employee and pre-retirement. PMID- 3844695 TI - The older employee and preretirement. PMID- 3844696 TI - Physiologic aspects of aging. PMID- 3844697 TI - The psychological development of the older worker. PMID- 3844698 TI - Over the back fence. PMID- 3844700 TI - Exercise, aging and health. PMID- 3844699 TI - Nutrition for the older adult: diet needn't be hazardous to health. PMID- 3844701 TI - Sleep and aging. PMID- 3844702 TI - ONA promotes and maintains the good health of nursing. PMID- 3844703 TI - Psychiatric nursing on the DDTP unit: stimulating and rewarding for nurses. PMID- 3844705 TI - Cardiovascular update. PMID- 3844704 TI - "Giving to get" research by nurses in service setting. PMID- 3844706 TI - Faces of nursing. Clinical specialist sees community education as key. PMID- 3844707 TI - Nursing care of skeletal pins: a closer look (continuing education). PMID- 3844708 TI - Bunionectomies. PMID- 3844710 TI - Hippocrates: above all, do no harm. PMID- 3844709 TI - Total knee arthroplasty: biomechanical and nursing considerations. PMID- 3844711 TI - Noncemented femoral prosthesis: intraoperative focus. PMID- 3844712 TI - Porous coated femoral prosthesis: concepts and care considerations. PMID- 3844713 TI - Development of a nursing assessment tool to diagnose altered body image in immobilized patients. PMID- 3844714 TI - Improving nutrition in children with cancer. PMID- 3844715 TI - NAPNAP: looking to the future. PMID- 3844716 TI - Parents and the sexuality of preschool children. PMID- 3844717 TI - Decreasing toddlers' sodium intake. PMID- 3844718 TI - Pediatric drug information: use of aerosol inhalers by asthmatics. PMID- 3844719 TI - Preparing well children for possible hospitalization. PMID- 3844720 TI - Pediatric management problem: conversion disorder. PMID- 3844721 TI - Beware of beasts in research. PMID- 3844722 TI - Strategies for creating a job: collaborative practice. PMID- 3844724 TI - Systematic evaluation of programs in nursing. PMID- 3844723 TI - Systematic evaluation of programs in nursing. PMID- 3844725 TI - Methodology and tools of evaluation. PMID- 3844726 TI - A systems approach to determining an effective time frame for systematic evaluation. PMID- 3844727 TI - Using the outcomes of a systematic evaluation plan. PMID- 3844728 TI - A theoretical model of support network conflict experienced by new mothers. AB - Women who have had their first child often receive help from persons comprising their support network. Although this help is well-intentioned, studies show that it may be associated with conflict between the new mother and others within the support network. Identification of factors influencing support network conflict is important so that nursing interventions can be implemented to reduce or avoid conflict. This article explores the topic of support network conflict and proposes a theoretical model of factors influencing support network conflict. PMID- 3844729 TI - Development of a tool for diagnosing changes in concern about exercise: a means of enhancing compliance. AB - Attrition is a problem in exercise programs. This may be due to the existence of stages in the process of acquiring new exercise behaviors. The Stages of Concern for Exercise (SOCE) scale was adapted from an educational innovations tool to examine exercise behavior. Content validity was established using a panel of judges. Alpha reliability coefficients calculated for the seven subscales or stages of concern were: .50 (Indifference), .78 (Informational), .77 (Personal), .82 (Management), .77 (Consequences), .81 (Collaboration), .65 (Refocusing). Two hundred fourteen subjects were recruited during the screening phase of a comprehensive work site health program. Relationships between scores on the SOCE and self-reports of minutes of exercise, history of exercise, enrollment in an exercise program, and ratings of expertise at exercise provide tentative validity. PMID- 3844730 TI - Ethical decision making in a bureaucratic context by senior nursing students. AB - This study examined the priorities reflected in the decisions reported by 775 senior baccalaureate nursing students in 16 Midwestern colleges and universities when presented a case depicting an ethical dilemma in nursing practice. In small groups of five each, the students arrived at a course of action to take in dealing with the dilemma. Categories for classifying responses were derived from the literature in nursing ethics. Categories used in content analysis of responses were: (1) patient-centered responses, (2) physician-centered responses, and (3) bureaucratic-centered responses. The small groups of students made from 3 to 17 decisions trying to resolve the dilemma, with a mean number of 8 decisions per group. Of the 1,163 decisions, 9% were in the patient-centered category, 19% were in the physician-centered category, and 60% were in the bureaucratic centered category. Select characteristics of participants were examined for relationships to group responses. Group responses did not differ significantly by education, clinical experience, previous experience with a similar dilemma, or RN status of group members. Students agreed on the first steps to take to resolve the dilemma, but achieved no consensus about where the nurse's responsibility ended. Examining the decisions made by nurses in response to an ethical dilemma is important in arriving at a better understanding of the relationship between ethical problems in professional practice and the influence of social organizations or bureaucracies on nursing roles. PMID- 3844731 TI - Emerging content in nursing: an analysis of dissertation abstracts and titles: 1976-1982. AB - This study describes the distribution of content in nursing doctoral program dissertations over a six-year period (1976-1982). Dissertation abstracts were requested from the 25 nursing doctoral programs that admitted students in the fall of 1982. A total of 319 dissertations first were grouped as either studies of clinical nursing or studies of social issues in nursing or studies of social issues in nursing and then coded for all subcategories that described the content of the study. Of the dissertations included in this analysis 78.4% pertained to clinical nursing; 21.6% were studies of social issues in nursing. Further analysis of subcategories and most frequently occurring combinations of study variables showed significant differences in dissertation content when analyzed by program age, geographic region of the country, and type of degree program. PMID- 3844732 TI - The unification model in nursing: a study of receptivity among nurse educators in the United States. AB - The purpose of this study was to analyze receptivity to the proposed introduction of the Unification of Education and Service Model among nurse educators in the United States according to the status-risk theory of receptivity. The three status groups studied were deans, tenured faculty, and nontenured faculty. Two phases of data collection involved probability sampling of baccalaureate nursing schools and educators. The final sample of 222 nurse educators represented 87 schools and 42 states. Receptivity to the proposed innovation and the level of risk perceived as accompanying this action were assessed from responses to three semantic differentials which were included in mailed booklets. None of the hypotheses was supported. The results, however, offer evidence of support for the status-risk theory of receptivity. PMID- 3844733 TI - The telephone survey: a procedure for assessing educational needs of nurses. PMID- 3844734 TI - Identification of postdisaster bereavement risk predictors. AB - Investigators have focused primarily on the bereavement experiences of widows and parents of deceased infants. In this study, subjects were 69 bereaved close family members and friends of deceased disaster victims and 50 control subjects. Six variables, not examined before, were entered in a series of hierarchical step wise regression equations to determine their ability to predict health outcomes. The six variables were gender, age, concurrent life stress, perception of the prior relationship between the bereaved and deceased as central or peripheral, perception of catastrophic death as preventable or unpreventable, and perception of social support. The three health outcomes were depression, somatization, and physical health status. Results indicated that the six selected variables accounted for 48% of the variance in predicting depression, 39% in predicting somatization, and 35% in predicting physical health status in the bereaved group. Concurrent negative life stress was the most important single predictor in all three health outcomes in both groups of subjects. PMID- 3844735 TI - Emotional symptoms and physical health in bereaved parents. AB - The purpose of this study was to compare the emotional symptoms and physical health of parents whose children had died suddenly in an accident, parents whose children had died following a chronic disease, and nonbereaved parents. Data for this retrospective survey were collected by mailed questionnaires: the Hopkins Symptom Checklist (HSCL), Bereavement Health Assessment Scale, Review of Life Experiences Scale, and a personal-situation questionnaire. Subjects were 30 bereaved parents who had experienced the death of a child following a chronic disease; 31 bereaved parents whose children died in an accident; and 81 nonbereaved parents. Findings indicated significant differences between the bereaved groups and the control group on the total scale score of the HSCL and on the subscales measuring Depression, Anxiety, Somatization, Obsession-Compulsion, and Interpersonal Sensitivity. However, there were no differences on these variables between the two bereaved groups. Bereaved parents with higher concurrent life stresses and parents from a lower socioeconomic background were at higher risk for emotional symptomatology. There were no significant differences among the three groups on the number of physician/nurse visits, number of hospital admissions, number of new or recurrent illnesses, or drug usage. Bereaved parents, however, more frequently reported appetite and sleep problems. PMID- 3844736 TI - Attributional analysis of chronic illness outcomes. AB - The Weiner et al. attribution model has generated a great deal of research on attributions for success and failure in academic achievement situations. Studies of success and failure attributions in real-life situations of high personal concern are limited. If the attribution model is to lead to a general theory of motivation, such tests in real-life situations are critical. In this study, causal attributions for success and failure outcomes of chronically ill patients were examined. Results indicated at least partial support for the model. Patients tended to attribute success internally and failure externally, but stability and expectations were not linked in this sample. Moreover, a tendency to respond with no cause to an open-ended measure and to hold little commitment to any causes on a closed-ended measure was characteristic of failure subjects. PMID- 3844737 TI - Network structure, social support, and psychological outcomes of pregnancy. AB - Fifty primigravid fathers and mothers responded to an investigator-developed tool that measured social network characteristics and perceived social support during the third trimester of pregnancy. At six weeks postpartum, these same parents completed the Postpartum Self-evaluation Questionnaire (PSQ) (Lederman, Weingarten, & Lederman, 1981). Relationships among network factors, perceived support, and postpartum outcomes were documented for four of the seven PSQ scales. A greater percentage of relatives in the network and more overlap with the spouse's network were important factors associated with positive postpartum outcomes for men, but not for women. Emotional and instrumental support were important variables in explaining six-week postpartum outcomes, whereas information and appraisal support were not significant variables at this time. Men scored lower than women on the PSQ scale measuring confidence in ability to cope with the tasks of parenting. PMID- 3844738 TI - Dutiful daughters. PMID- 3844739 TI - In the shadow of the bomb. Interview by Harriet Glaze. PMID- 3844740 TI - Celebrating the process. PMID- 3844741 TI - An antenatal adventure. PMID- 3844743 TI - Griffiths and management: the attributes of excellence. PMID- 3844742 TI - No excuses. PMID- 3844744 TI - How drugs act. Eight. Antibacterial and antiviral agents. PMID- 3844746 TI - Water intoxication. PMID- 3844745 TI - Education: going solo. PMID- 3844747 TI - Paving the way for parenthood. PMID- 3844748 TI - Breastfeeding. One. The milk of kindness. PMID- 3844749 TI - Breastfeeding. Two. Feeding the relationship. PMID- 3844750 TI - Breastfeeding. Three. Supply and demand. PMID- 3844751 TI - Measurement of patient dependency. PMID- 3844752 TI - Incontinence in the elderly. Part five. PMID- 3844753 TI - Why nurses are missing out. PMID- 3844755 TI - The team from Tooting. Delivering the goods. PMID- 3844754 TI - The team from Tooting. Labour of love. PMID- 3844756 TI - Don't throw out the baby with the bath water. PMID- 3844757 TI - Bridging the communication gap. PMID- 3844758 TI - Chest tube patients. PMID- 3844759 TI - High anxiety. PMID- 3844760 TI - Griffiths and management. Big business and the NHS. PMID- 3844761 TI - Cause for complaint. Seven. Inadequate advice. PMID- 3844762 TI - How drugs act. Nine. Drugs and pain. PMID- 3844763 TI - Parent power in the Third World. Interview by Michael Arton. PMID- 3844764 TI - Nursing in rural Zambia. PMID- 3844765 TI - The dependent spirit. PMID- 3844767 TI - War on Wirral. PMID- 3844768 TI - Essential physical therapy for stroke patients. PMID- 3844766 TI - AIDS: "isolate the disease, not the patient'. PMID- 3844769 TI - Stumbling and fumbling. PMID- 3844770 TI - Follow the charts. PMID- 3844771 TI - A secure and secluded spot. PMID- 3844772 TI - Griffiths and management. The role of the general manager. PMID- 3844773 TI - Adjusting to tetraplegia. PMID- 3844774 TI - Problems of the ward manager. Twelve. Fit for work? PMID- 3844776 TI - The team from Tooting. Midwifery in the round. PMID- 3844775 TI - How drugs act. Ten. Drugs and sleep. PMID- 3844777 TI - The team from Tooting. Under the microscope. PMID- 3844778 TI - A lesson from America. Steps up the ladder. PMID- 3844779 TI - A lesson from America. Two. Registered nurses: what next? PMID- 3844780 TI - Lesson from America. Three. License to practice. PMID- 3844781 TI - The future of nursing education. PMID- 3844782 TI - The unequal equation. PMID- 3844783 TI - Chairman of the board. Interview by Caroline Howie. PMID- 3844785 TI - Outlawing a barbaric practice. PMID- 3844784 TI - Contraception. Beyond the pill? PMID- 3844786 TI - Putting the patient first. PMID- 3844787 TI - More than "doing the obs". PMID- 3844788 TI - The pulse and blood pressure. PMID- 3844790 TI - Colostomy care. Maintaining an active life. PMID- 3844789 TI - Colostomy care. Smiles hide the truth. PMID- 3844791 TI - The team from Tooting. A friendly delivery. PMID- 3844792 TI - The team from Tooting. An enjoyable birth. PMID- 3844794 TI - Griffiths and management. Managing the business. PMID- 3844793 TI - Breaking barriers. Under a Punjabi sky. PMID- 3844796 TI - Coming to grief. PMID- 3844795 TI - How drugs act. Eleven. Drugs and the bronchi. PMID- 3844797 TI - Models and theories. Six. Roper's activities of living model. PMID- 3844798 TI - Act of hope. Interview by Tamara Ross. PMID- 3844799 TI - Nearest and dearest? PMID- 3844800 TI - I think, therefore I'm ill. PMID- 3844801 TI - Discharge referrals--who's responsible? PMID- 3844802 TI - Principles of patient teaching. PMID- 3844803 TI - Griffiths and management. What role for nurses? PMID- 3844804 TI - The value of feedback. PMID- 3844805 TI - How drugs act. Twelve. Drugs and hypertension. PMID- 3844807 TI - Changes in nursing. An orthopaedic revolution. PMID- 3844806 TI - Straightening up. PMID- 3844808 TI - Systems of life No 122. Setting up the systems--22. PMID- 3844810 TI - Symposium on pediatric oncology. PMID- 3844809 TI - Education: learning through the patient. PMID- 3844811 TI - Hypnosis as adjuvant antiemetic therapy in childhood cancer. AB - Hypnosis, as a relaxation technique to reduce anxiety and drug-related nausea and vomiting in children with cancer, is an effective treatment modality. Its benefit as a self-relaxation technique is now being realized. PMID- 3844812 TI - Home visits for the child with cancer. AB - Home visits for children with cancer has yet to become widely understood and accepted. However, health care planners and policy makers must be convinced of the numerous advantages and benefits of home visits for the child, his family, and the community. PMID- 3844813 TI - A multidisciplinary approach to identification and remedial intervention for adverse late effects of cancer therapy. AB - Because of advances in surgical technique, radiation therapy, and combined chemotherapy regimens, there has been a dramatic improvement in the survival of children with pediatric malignancies. All treatment modalities are associated with adverse effects that may be manifested months to years after therapy. This article has provided an overview of the physiologic and psychologic adverse effects of antineoplastic therapy and described the multidisciplinary approach used by one institution to identify and initiate appropriate remedial intervention. Nurses can learn to assist in the identification of adverse late effects, provide support to the family, and facilitate appropriate intervention. PMID- 3844814 TI - High expectations. Nurses who work with children who might die. AB - A pediatric oncology nurse, by strengthening her base from which to practice, can continue to work effectively with children who might die. This strengthening process involves developing a heightened awareness toward children's as well as her own thoughts about illness and death. It involves adapting cognitively, emotionally, and philosophically to working with children who may die. PMID- 3844815 TI - Symposium on infections in the compromised host. PMID- 3844816 TI - Symposium on infections in the compromised host. External barriers to infection. AB - Knowledge of the external barriers to infection is the first step in understanding the normal defense mechanisms of the host. The intact skin and mucous membranes, with their normal flora and secretions, the action of cilia in the upper respiratory tract, secretory functions, and the normal flow of body fluids are all important factors associated with the external defense against infections. When these barriers are altered or breached, the potential for infection increases and the internal immune system is activated to assist in defending the body. PMID- 3844817 TI - Symposium on infections in the compromised host. Significance of fever in the compromised host. AB - The febrile response is a normal, nonspecific manifestation of nearly all infectious disease processes. However, in the compromised host, this response is often diminished or absent, thus depriving the clinician of an important diagnostic indicator. This article describes various clinical entities that present with fever and outlines the therapeutic considerations used in patients with impaired defense mechanisms. PMID- 3844818 TI - Symposium on infections in the compromised host: The extremities of age: the newborn and the elderly. AB - The newborn and the elderly are at increased risk for infection because their immune defenses are suppressed as a result of age and institutionalization. The elderly person has the additional likelihood that chronic illness and debility will lead to infection, whereas the newborn has an increased chance of exposure to infectious agents from the mother and the environment. PMID- 3844819 TI - Infections in patients with solid tumors. AB - Although patients with solid tumors do not suffer similar rates of infections as patients with hematologic malignancies, several predisposing factors may influence their outcome. These factors include tumor growth, malnutrition, alteration of anatomic barriers, and side effects of various therapeutic modalities. Specific nursing interventions for the prevention of infections are described. PMID- 3844820 TI - Symposium on infections in the compromised host. Hodgkin's disease and non Hodgkin's lymphomas. AB - Two areas of study have made the understanding of infections in Hodgkin's disease and non-Hodgkin's lymphoma both clearer and more complicated. First, the overly simple concepts that certain underlying diseases predispose patients to specific infections can no longer be uniformly applied. Second, while Hodgkin's patients were once thought to have cell-mediated immune defects, we now know that mixed T- and B-cell abnormalities as well as alterations in complement and phagocytic processes are seen. Therefore, we can expect to find infecting organisms against which several immune functions appear to be important. The more common organisms found in these patients include the encapsulated bacteria and fungi, intracellular microbes such as the mycobacteria and certain viruses, and, finally, some protozoa. Many are prevalent in the environment and some are considered to be normal human microbial flora. These opportunistic pathogens will continue to cause serious, often fatal infections in this group of compromised patients until more is known about the causes of lymphoproliferative disease and significant advances in immunotherapy are made. PMID- 3844821 TI - Stress reduction. A spectrum of strategies in pediatric oncology nursing. AB - It is important to provide resources to promote effective coping mechanisms for dealing with the stresses encountered by children, families, and staff in a pediatric oncology setting. Knowledge of how such resources can be used to the maximum advantage must be combined with the utilization and development of support services. PMID- 3844822 TI - Heroin abuse. PMID- 3844823 TI - Management. For better or for worse. PMID- 3844824 TI - Education. Gaining and giving insight. PMID- 3844825 TI - When kindness was not enough. PMID- 3844826 TI - Part of the spiral of life. PMID- 3844827 TI - My brother's keeper. PMID- 3844829 TI - Paige the oracle. Interview by David Mitchell and Martin Vousden. PMID- 3844828 TI - A species called clinical teacher. PMID- 3844830 TI - What are we doing to each other? PMID- 3844831 TI - The bare minimum. PMID- 3844832 TI - Learning to make decisions. PMID- 3844833 TI - Community. Home AIDS. PMID- 3844835 TI - Oncology nursing. 5. What's in a name? PMID- 3844834 TI - Close to their roots. PMID- 3844836 TI - The seeds of trouble. PMID- 3844837 TI - Education. Removing the blinkers. PMID- 3844838 TI - Management. More than a buzzword. PMID- 3844839 TI - Community issues. 3. A challenging district. PMID- 3844840 TI - Nutrition. 2. Diet in terminal illness. PMID- 3844841 TI - Nurse managers are all right. PMID- 3844842 TI - Risen from the ashes. PMID- 3844843 TI - Education: curriculum development. PMID- 3844844 TI - Community. All in a day's work.... PMID- 3844845 TI - Intensive care nursing. 1. Clinical nurse specialist. PMID- 3844846 TI - Doctor knows best? PMID- 3844847 TI - All fair and above board? PMID- 3844849 TI - Community issues. 4. Key problems for key workers. PMID- 3844848 TI - Psychiatric nurses--are they just troublemakers? PMID- 3844850 TI - Community issues. 4. Homeless and healthless. PMID- 3844851 TI - Taking the pressure off. PMID- 3844852 TI - Oncology nursing. 6. Alternative health approaches. PMID- 3844853 TI - Too rash, too ill-advised, too sudden. PMID- 3844854 TI - R.N. failure to monitor vital signs: death results. PMID- 3844855 TI - Sex relationship alleged: sex discrimination charged. Case in point: King v. Palmer (598 F. supp.65--DC). PMID- 3844856 TI - Legal case briefs for nurses. PA: R.N. fails to renew license--terminated. LA: R.N. accused of negligent injection: foot drop. PMID- 3844857 TI - Mental patient sets self on fire: nurses sued. Case in point: Valentine v. Strange (597 F. Supp. 1316--VA). PMID- 3844858 TI - [Nutrition and oncological treatment]. PMID- 3844859 TI - [Principles for planning programs in health promotion]. PMID- 3844860 TI - [Technics for moving patients with maximum efficiency and without self-injury]. PMID- 3844861 TI - [Planning of duty schedule]. PMID- 3844862 TI - [Participation of the nurse in occupational accidents]. PMID- 3844863 TI - [Methods in nuclear cardiology studies]. PMID- 3844865 TI - [The essential drugs; all which are needed but not all which exist]. PMID- 3844866 TI - Proposed changes would affect all nurses. PMID- 3844864 TI - [Nurses and scholarships: evaluation of an experience]. PMID- 3844867 TI - Health needs researched. PMID- 3844869 TI - Nursing in Israel. Caring for a diverse population. PMID- 3844868 TI - Therapeutic listening. PMID- 3844870 TI - LPNs and medications: another point of view. PMID- 3844872 TI - Nursing on stamps. PMID- 3844871 TI - College teaches practical nurses to administer medications. PMID- 3844874 TI - A half century of nursing: personal reflections. PMID- 3844873 TI - A private person. Interview by Peggy Wysong. PMID- 3844875 TI - Repairing form and function. Ophthalmic, plastic and reconstructive surgery. PMID- 3844876 TI - Cardiac prosthesis. Number 2 tries harder. PMID- 3844877 TI - Liability of the nurse anesthetist: when does "res ipsa" apply? PMID- 3844878 TI - Custom C-V packs save time and money. PMID- 3844879 TI - OR crisis. Malignant hyperthermia. PMID- 3844880 TI - Preventing pediatric blindness through cataract surgery. PMID- 3844881 TI - What are the sounds of success in the OR? PMID- 3844882 TI - Legal notes: informed consent. PMID- 3844883 TI - TLC--how vital? PMID- 3844884 TI - Keratomileusis: cutting a path for sight. PMID- 3844885 TI - Psychosocial aspects of cancer: a review. PMID- 3844886 TI - Therapeutic play group for patients and siblings in a pediatric oncology ambulatory care unit. PMID- 3844887 TI - Adherence to chemotherapy regimens among children with cancer. PMID- 3844888 TI - Spiritual nursing care for oncology patients. PMID- 3844889 TI - Going home: patient and spouse adjustment following cancer surgery. PMID- 3844891 TI - Lobbying for new directions in health care. PMID- 3844890 TI - [Use of proteinase inhibitors on patients with different clinico-morphological forms of atopic dermatitis]. PMID- 3844892 TI - Nursing research--help for beginners. PMID- 3844894 TI - Food for thought. PMID- 3844893 TI - Nursing at ... the Dickinsfield Day Hospital. PMID- 3844895 TI - Anatomy of a malpractice trial. PMID- 3844896 TI - New drugs. Hands-on experience. PMID- 3844898 TI - Getting certified. PMID- 3844897 TI - Tay-Sachs. The dreaded inheritance. PMID- 3844899 TI - The burnout test. PMID- 3844900 TI - A delicate balance. Strategies for feeding ventilated COPD patients. PMID- 3844901 TI - The dilemma of physiological problems. Without collaboration, what's left? PMID- 3844902 TI - The dilemma of physiological problems. Eliminating the double standard. PMID- 3844903 TI - Documenting post-anesthesia recovery. PMID- 3844904 TI - Narcotic analgesia for the elderly. PMID- 3844905 TI - How do you avoid transfusion complications? PMID- 3844906 TI - Teacher, nurse, teacher. PMID- 3844907 TI - Abnormalities in kallikrein excretion in spontaneously hypertensive rats. AB - Experiments were conducted to examine kallikrein excretion in 12-wk-old anesthetized and conscious Okamoto-Aoki spontaneously hypertensive rats (SHR) and normotensive Wistar-Kyoto rats (WKY). Urinary excretion of active and total kallikrein was determined at spontaneous pressures and in response to acute decreases in renal perfusion pressure (RPP; suprarenal aortic constriction). Under basal conditions, active kallikrein excretion was lower in SHR compared with WKY whether conscious (4.4 +/- 1.7 vs. 9.4 +/- 1.3 pkat . min-1 . g kidney wt-1) or anesthetized (5.7 +/- 1.3 vs. 10.4 +/- 1.7). In both anesthetized SHR and WKY, excretion of active and total kallikrein was directly related to RPP after 20 mmHg decrements in RPP and was depressed in SHR at each pressure level. The slope of the relation between active kallikrein excretion and pressure was less in SHR (0.06 +/- 0.01 vs. 0.14 +/- 0.05 pkat . min-1 . g kidney wt-1 . mmHg 1). Thus kallikrein excretion is set at a lower level in SHR and is less responsive to changes in RPP. These strain differences are not related to urine flow, Na excretion, or glomerular filtration rate (GFR) since the values were the same in both strains at each pressure level. Analysis of covariance indicated a significant correlation between active kallikrein excretion and RPP in WKY and SHR, with RPP accounting for 92% of the variation in the kallikrein data. GFR, Na excretion, and urine flow rate were not significantly correlated to active kallikrein and were responsible for only 2% of the variation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3844908 TI - Prevalence survey for hepatitis B in high-risk university hospital employees. AB - A 1974 prevalence survey of laboratory and dialysis employees identified 8.7% (4 of 46) with evidence of past hepatitis B infection. Since then increasing numbers of asymptomatic carriers have been admitted to University Hospital. Reports of exposures by employees have also increased. With the availability of a hepatitis B vaccine and the changes in patient population, a second prevalence survey was conducted to target employees at greatest risk for hepatitis B virus. Sixty-two percent (422 of 687) of high-risk employees who completed both blood work and questionnaires were study participants; 10.66% (45 of 422) had positive markers for hepatitis B virus. Laboratory personnel had the highest prevalence rate, 15% (25 of 164), whereas obstetric personnel had the lowest, 0% (0 of 52). Prevalence increased with age (chi 2 for linear trend, p = 0.000005), years of blood handling (p = 0.00003), work in a laboratory setting (p = 0.02), increasing numbers of puncture wounds from needles of patients with hepatitis B virus infection (p = 0.02), previous history of jaundice (p = 0.0003), and history of hepatitis (p = 0.000002). PMID- 3844909 TI - Effect of an expanded physical facility on nosocomial infections in a neonatal intensive care unit. AB - Fifty-two months' data were reviewed to assess the effect of a threefold increase in space per infant in a neonatal intensive care unit on rates of nosocomial infections (NIs) and colonization with Staphylococcus aureus (39 months in a crowded 18-bed unit and 13 months in a spacious 32-bed unit). Mean length of stay, survival rates, mean birth weights, and other parameters indicated that infant populations in the old and new units were similar. NI rates were not significantly different in the old and new units (11.7% and 9.6%, respectively; p = 0.17) nor were rates of colonization of anterior nares with S. aureus (11.7% and 10.7%; p = 0.5). NI rates, but not S. aureus colonization rates, were significantly higher during months of high patient turnover (p less than 0.01). Sites of infection were similar in the old and new units. There was, however, a significant change in bacterial species causing NI. Klebsiella pneumoniae and Pseudomonas aeruginosa caused 20.4% of NIs in the old unit, but only 2.1% in the new unit (p less than 0.001) and NIs caused by S. epidermidis increased from 4.7% to 14.9% (p = 0.02) in the new unit. There was also a marked decrease in the numbers of clusters of NI occurring in the new unit, indicating that cross infections between infants were probably minimized. PMID- 3844911 TI - Sterile water and saline solution: potential reservoirs of nosocomial infection. PMID- 3844910 TI - A survey of hepatitis B vaccination programs for hospital employees. PMID- 3844912 TI - A critical review of "Draft manual for infectious waste management". PMID- 3844913 TI - Surveillance for the detection of nosocomial infections and the potential for nosocomial outbreaks. II. Development of a laboratory-based system. AB - We describe the development of a surveillance system that uses thresholds for detecting nosocomial infections and the potential for nosocomial outbreaks based on data from microbiology laboratory records at our hospital from 1980 to 1982. These records were monitored weekly to determine the number of positive isolates by the identity of the organism and by the site of the culture. A mean of 225 specimens was processed weekly, with 60 of these yielding bacteria or fungi. The average number of organisms isolated per positive culture was 1.46. Two methods of establishing thresholds were compared, one based on percentiles of ranked isolates, the other based on the mean plus intervals of standard error. The system using thresholds established by the standard error method was consistently more useful to highlight weeks for which there was high risk of a problem occurring in less time than were the surveillance techniques traditionally employed. PMID- 3844914 TI - ANA asks Reagan to end interference in Illinois wage suit. PMID- 3844915 TI - Nursing education, research frozen out of HHS 1986 budget. PMID- 3844916 TI - Nurse-managed centers offer more to patients, nurses. PMID- 3844917 TI - As I see it ... Skit shows ANA statement helps RNs improve care. PMID- 3844918 TI - HHS will establish center for nursing research. PMID- 3844919 TI - Chronic pain and scarring from cement burns. AB - A patient who had suffered cement burns in 1978 continues to experience hypoesthesia and chronic pain in the scarred areas. The pain is severe, occurs daily, and prevents the patient from working. PMID- 3844920 TI - Preparation for practice. PMID- 3844921 TI - Widening horizons at Perry Park. PMID- 3844923 TI - A new kind of dispensing service. PMID- 3844924 TI - Age must not invite harm or hurt. I. PMID- 3844922 TI - The coming of age. PMID- 3844925 TI - From the outside looking in. PMID- 3844926 TI - Not growing old, just growing. PMID- 3844927 TI - Ageism: an introduction. PMID- 3844928 TI - Royal Australian Nursing Federation. Registered federal rules. Incorporating standard branch rules. Current December 19, 1984. PMID- 3844929 TI - A.I.D.S. and the professional ethic. PMID- 3844930 TI - World health: a revolution beginning. PMID- 3844932 TI - The blood story. Part I. The phenomenal bank. PMID- 3844931 TI - Down and out in Fitzroy. PMID- 3844933 TI - The blood story. Part II. AIDS--current concepts and implications for blood transfusion services and nursing staff. PMID- 3844934 TI - Poland revisited. PMID- 3844935 TI - Rights and wrongs towards the aged. Part 2. PMID- 3844936 TI - Migraine and its treatment. From the Royal Melbourne Hospital Pharmacy Department. PMID- 3844937 TI - Antibiotics: the resistance problem. PMID- 3844938 TI - Immunoglobulin degradation and D-penicillamine action. AB - Treatment of human IgG with pancreatic elastase gave a product of higher molecular weight than IgG. Its formation was inhibited by blocking IgG sulfhydryl groups with iodoacetamide. Incubation of the high molecular weight product with either glutathione or D-penicillamine yielded Fab- and Fc-like fragments. Addition of oxidized glutathione to mixtures containing either reduced thiol gave a new product of molecular weight intermediate between the high molecular weight product and Fab- and Fc-like fragments. Oxidized D-penicillamine did not substitute for oxidized glutathione. This new product was formed under conditions that favor protein sulfhydryl-disulfide exchange. The effect of D-penicillamine on its formation was discussed in terms of D-penicillamine's mode of action in rheumatoid arthritis. PMID- 3844940 TI - Dedication ceremonies. The John Hopkins University School of Nursing. September 23, 1974. PMID- 3844939 TI - Demonstration of arginyl-bradykinin moiety in rat HMW kininogen: direct evidence for liberation of bradykinin by rat glandular kallikreins. AB - The amino acid sequence around kinin moiety in rat High-Molecular-Weight (HMW) kininogen was determined by isolating a peptide containing bradykinin after cyanogen bromide treatment of the purified kininogen as follows; NH2-Thr-Ser-Val Ile-Arg-Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg-Ala-Pro-Arg- Val-Lys-Lys-. The data indicated that rat HMW kininogen contains the arginyl-bradykinin moiety, instead of lysyl-bradykinin. Kinins liberated from rat HMW kininogen by rat urinary and submaxillary kallikreins were identified to be bradykinin, not arginyl bradykinin. PMID- 3844941 TI - Continuing education maze. 1. PMID- 3844942 TI - Ethical decision-making. The principle of beneficience. PMID- 3844943 TI - Computer applications in nursing. Implications for the curriculum. PMID- 3844944 TI - Nurses' perceptions concerning computer uses before and after a computer literacy lecture. PMID- 3844945 TI - On the need for database management systems for nursing. PMID- 3844946 TI - Computer use in the emergency department. PMID- 3844947 TI - Battered women: the issues for nursing. PMID- 3844948 TI - A sexual assault care center. PMID- 3844950 TI - Some common questions and concerns regarding incest. PMID- 3844949 TI - Incest: a violation of trust. PMID- 3844951 TI - Taking action against child sexual abuse. PMID- 3844952 TI - Abuse of the elderly. PMID- 3844953 TI - The use of computers in public health nursing: today or tomorrow? PMID- 3844954 TI - High volume chemodialysis: a new outpatient program. PMID- 3844955 TI - Disaffiliation from CNA: OIIQ takes the first step. PMID- 3844956 TI - You and the law. Dubin report highlights nursing issues. PMID- 3844957 TI - Nurturing parents in crisis. PMID- 3844958 TI - The wrong kind of information. PMID- 3844959 TI - The importance of nursing involvement in health care planning. PMID- 3844960 TI - Thrombocytopenia: a complication of viral illness. PMID- 3844961 TI - PKU. PMID- 3844962 TI - Stress in the workplace: public health and hospital nurses. PMID- 3844963 TI - Children's perceptions of their sibling's death at home or hospital: the precursors of differential adjustment. PMID- 3844964 TI - Preventive health practices and educational needs in families with hereditary melanoma. PMID- 3844965 TI - Social support: network and quality as perceived by Egyptian cancer patients. PMID- 3844966 TI - Strengths and needs of per diem hospice personnel. PMID- 3844967 TI - Promising early breast cancer treatment--without mastectomy. PMID- 3844968 TI - Programmed instruction: cancer care. Cancer prevention and detection: ovarian cancer. PMID- 3844969 TI - Standards of clinical nursing practice: alopecia. PMID- 3844970 TI - Antitumor properties of vindesine-monoclonal antibody conjugates. AB - The anticancer alkaloid vindesine (VDS) was conjugated to four mouse monoclonal antibodies recognizing human tumor-associated antigens. The antibodies were 96.5 (antimelanoma, IgG2a); 791T/36 (antiosteogenic sarcoma, IgG2b); 11.285.14, and 14.95.55 (anticarcinoembryonic antigen, IgG1 and IgG2a respectively). Conjugates VDS-96.5 and VDS-791T/36 were tested in vitro and shown to be specifically cytotoxic for target cells expressing the appropriate antigen. The in vivo effects of the antibodies and conjugates were tested against human tumor xenografts in athymic or immunodeprived mice using multiple treatments. Conjugate VDS-96.5 retarded the initial growth of a melanoma xenograft, whereas free antibody was without effect. Similarly, VDS-791T/36 but not free antibody retarded the growth of osteogenic sarcoma 791T. The most marked antitumor effects observed were those obtained with VDS conjugates of the anti-CEA antibodies against a colorectal tumor xenograft. Antibody 14.95.55 suppressed tumor growth both alone and as a VDS conjugate, whereas 11.285.14 produced only a slight effect alone but an almost complete and lasting suppression of tumor growth as a VDS conjugate. Free VDS had little effect at nontoxic levels. Acute studies showed that VDS-11.285.14 conjugate was considerably less toxic than free VDS in Balb/c mice. PMID- 3844971 TI - The effect of purification on the immunogenicity of tumor-specific transplantation antigens. AB - Immunization with the tumor-specific transplantation antigens (TSTA) of experimental, chemically induced sarcomas engenders specific host resistance to challenge with viable, homotypic neoplastic cells. The strength of tumor resistance depends upon the physical state of the TSTA used for immunization. Treatment with 10(5)-10(6) irradiated tumor cells, a 2-log dose range, induces complete rejection of neoplastic challenges, while immunization within a 1-log dose range with crude 3 M KCl or with 2.5% butanol extracts containing TSTA evokes a weak state of resistance characterized by decreased outgrowth of tumor challenges, but not neoplastic regression. The reduced immunogenicity may be due to either contamination with substances that antagonize host resistance, for example by induction of suppressor cells, or an intrinsic limitation by virtue of the molecular properties of extracted compared with cell-surface TSTA. MCA-F and MCA-D, two noncross-reactive fibrosarcomas induced in C3H/HeJ mice with 3 methylcholanthrene, were employed to compare the relative immunogenic activity of intact tumor cells, 2.5% butanol extracts, and materials sequentially purified by preparative isoelectric focusing (pIEF), preparative isotachophoresis (pITP), and high performance gel permeation chromatography (HPGPC). Immunoprotective TSTA activity purified 50,000-fold by this protocol extended the effective dose range by four to five logs: 15 pg to 1.5 micrograms MCA-F or 1 pg to 10 ng MCA-D antigen-induced specific host resistance. However, despite the appreciable purification of TSTA, immunization with extracted materials only delayed neoplastic outgrowth. They induced neither immediate rejection nor only temporary progression of transplanted tumor cells. Thus, purified TSTA preparations by themselves lack the immunogenic properties of intact cells that result in maximal induction of tumor resistance. PMID- 3844973 TI - Modulation of formation of tumor metastases by peritoneal macrophages elicited by various agents. AB - We have studied the formation of experimental B16 melanoma metastases in the lungs of mice inoculated IV with tumoricidal or nontumoricidal peritoneal macrophages elicited by various agents. IV inoculation of peritoneal M phi elicited by Brewer's thioglycollate medium (TG-M phi) 1 day before the injection of B16 melanoma cells dramatically increased the number of metastatic foci in the lungs. NIH thioglycollate broth and proteose peptone each elicited a relatively low number of M phi, which were morphologically distinguishable from TG-M phi and did not influence the yield of B16 melanoma colonies in the lungs. Resident or C. pravum-elicited M phi also did not augment metastasis formation. TG-M phi became highly tumoricidal after IP stimulation with poly I:C. However, tumoricidal TG-M phi inoculated IV 1 day before IV inoculation of B16 melanoma cells did not have an antimetastatic effect. On the contrary, both tumoricidal and nontumoricidal TG M phi augmented metastasis formation. Poly I:C treatment had a substantial antimetastatic effect in the normal mice, but not in mice with adoptively transferred TG-M phi. Histological analysis revealed that IV-inoculated TG-M phi (tumoricidal or nontumoricidal, either viable or disrupted) induced severe intravascular reaction in the lungs, but not in the liver or kidney. This reaction manifested in the aggregation of the various blood cells, preferentially neutrophils. These reactions were not observed after IV inoculation of PM phi or NIH TG-M phi. Intravascular inflammatory reactions induced by TG-M phi may be responsible for the augmentation of metastasis formation, partly by suppression of NK reactivity and mostly by the acceleration of the processes of tumor cell extravasation. These data may provide some insight into the failure to achieve systemic adoptive immunotherapy using activated peritoneal TG-M phi. PMID- 3844972 TI - Influence in vitro on NK and K cell activities by cimetidine and indomethacin with and without simultaneous exposure to interferon. AB - The histamine-2 receptor antagonist cimetidine (10(-5)M) and the prostaglandin synthesis inhibitor indomethacin (10(-8)M) augmented natural killer cell activity in the majority of healthy controls and patients with advanced melanoma and in a lower frequency of patients with colorectal carcinoma. Antibody-dependent cellular cytotoxicity was increased in most melanoma patients but in a lower proportion of patients with colorectal cancer. Compared with the effect of interferon the augmentation of NK- and K-cell activities was small in most patients. Cimetidine was also demonstrated to bring about a further increase in the interferon-induced NK activation of peripheral blood mononuclear cells from a majority of healthy donors and patients with melanoma. Furthermore, cimetidine augmented the interferon-induced K-cell activation of peripheral blood mononuclear cells from most patients with melanoma and colorectal cancer. PMID- 3844974 TI - In vivo immunization against autologous glioblastoma-associated antigens. AB - A glioblastoma patient was immunized in vivo with a mixture of autologous and homologous glioblastoma cells coupled to adjuvant peptide and cord-factor analog. Immune activity of peripheral blood lymphocytes was measured in a short-term 51chromium-release assay against autologous tumor target cells. The patient developed direct cell-mediated cytotoxicity against tumor-associated antigens, which appeared to be T-cell mediated. PMID- 3844976 TI - Monocyte chemotaxis in patients with nonseminomatous testicular carcinoma. Effect of chemotherapy. AB - The chemotactic responsiveness of blood monocytes was tested in 16 patients with nonseminomatous testicular carcinoma before, during, and after chemotherapy. All the patients initially had monocyte chemotaxis within the normal range. No correlation with the histology of the tumor, the clinical stage, or the presence in serum of alpha-fetoprotein and human chorionic gonadotropin was observed. Plasma from the patients did not inhibit the chemotaxis of normal monocytes, and serum from the patients contained no chemotactic factor inhibitor. During intensive chemotherapy with cis-platinum, bleomycin, and vinblastine a reversible defect in chemotaxis occurred without correlation to the development of fever. Two months after the completion of chemotherapy the chemotactic responsiveness was unchanged compared with pretreatment values. In conclusion, this study shows normal monocyte chemotaxis in patients with testicular carcinoma, which is in contrast to reports on a variety of other solid tumors. PMID- 3844975 TI - Further studies on the differences in cytotoxicity of human peripheral blood monocytes and bronchoalveolar macrophages for cultured human lung cells. AB - Previously reported differences between the cytostatic activity of human peripheral blood monocytes (PBM) and bronchoalveolar macrophages (BAM) for cultured human lung tumor cells have been further investigated. The differences are both quantitative and qualitative and are shown not to be due to the respective methods of purification. There was a varying contribution of cytolysis to the cytostasis detected by the 75selenomethionine post-labeling assay used. Bronchoalveolar macrophages were cytolytic when tested at both low and high E:T ratios but PBM were only cytolytic at the low E:T ratio. A variable dependence upon soluble cytostatic factor(s) was suggested, and there was evidence of heterogeneity in the factors released by the two populations. Cytostatic factor production by both populations appeared to be under similar regulatory constraints. In vitro maturation of PBM altered their cytostatic dose-response curve to one resembling that previously reported for BAM. It was also shown that sera from poor-prognosis lung tumor patients, which suppressed the in vitro maturation of PBM, also suppressed the in vitro cytostatic activity of PBM for cultured human lung tumor cells. PMID- 3844977 TI - Localization of an anti-CEA monoclonal antibody in colo-rectal carcinoma xenografts. AB - A mouse monoclonal anti-CEA antibody (11.285.14) has been examined for tumour localization potential by assessing its distribution in immunodeprived mice with xenografts of human colon carcinoma cell lines HCT-8, HRT-18, HT-29, and LS174T and a xenograft (HRVB) established from a primary rectal carcinoma. With four carcinomas (HCT-8, HT-29, LS174T, and HRVB) preferential tumour localization of 125I anti-CEA was seen. Compared with 131I normal IgG1 localization indices of up to 4.4:1 were achieved. Up to 10% of the injected dose of 125I anti-CEA was present/g of tumour tissue and with the largest xenografts examined (3-4 g) up to 40% of the total body reactivity was localized in tumour tissue. The tumour localization of 131I labelled antibody was visualized by external gamma camera imaging. Overall antibody localization correlated with the CEA content of the xenografts and the fourth colon carcinoma xenograft (HRT-18) and an osteogenic sarcoma xenograft (791T), both with very low CEA levels, showed no localization of the monoclonal antibody. PMID- 3844978 TI - [The effect of new oligopeptide elastase inhibitors in acute experimental pancreatitis in the rat]. PMID- 3844979 TI - Understanding Asian diets. PMID- 3844980 TI - Nutrition. A healthy start. PMID- 3844981 TI - Nutrition. Intolerant babies. PMID- 3844982 TI - Meeting minority needs. PMID- 3844983 TI - Ethnic minorities. Understanding the under-fives. PMID- 3844984 TI - What's happening in Connecticut: gerontological nursing practice. PMID- 3844985 TI - Effective credentialing and peer review of nursing personnel. PMID- 3844986 TI - Arrhythmia quiz (suppression of sino-atrial node with junctional escape beats). PMID- 3844987 TI - EKG of the month (myocardial infarction with complete heart block). PMID- 3844988 TI - Nursing care plan for the patient receiving high-frequency jet ventilation. PMID- 3844989 TI - Judaic ethical beliefs and customs regarding death and dying. PMID- 3844990 TI - High-frequency ventilation: an overview. PMID- 3844992 TI - Metoprolol tartrate (Lopressor-IV). PMID- 3844991 TI - Adrenal insufficiency. PMID- 3844993 TI - The experience of acute illness: impact on psychosocial needs. PMID- 3844995 TI - Indications for and management of cardiac pacemakers. AB - Cardiac pacemakers are now at the forefront of medical technology. The ability to provide pacing therapy adapted to the individual patient has resulted in significant patient benefit. Although the indications for cardiac pacing have changed little over the past decade, the types of pacemakers available for specific bradyarrhythmias have proliferated in leaps and bounds. This technology is complex and sophisticated and requires in-depth knowledge for appropriate utilization. Artificial replacement of the human conduction system is now a reality. Still other advances remain to be achieved in this area, mainly in sensor technology and pacing therapy for tachyarrhythmias. At the current rate of development, the outlook is indeed promising. PMID- 3844994 TI - Respiratory infections may reflect deficiencies in host defense mechanisms. AB - Serious respiratory tract infections are rare in the healthy individual and most of the nuisance morbidity that occurs results from nasopharyngeal viral infections that many people get once or twice a year. The economic impact from these upper respiratory tract infections is appreciable, however, in terms of absenteeism from school or work, but unfortunately there is little that can be done to ward them off in a practical way. Pneumonia is an infrequent lifetime experience for most non-smoking adults and when it occurs, unusual circumstances may pertain--a particularly virulent microorganism is in circulation, or perhaps one has been exposed to a newly recognized germ, such as has occurred with Legionella species in the past 8 years or so. What protects us the great majority of the time is a very effective network of respiratory tract host defenses. These include many mechanical and anatomical barrier mechanisms concentrated in nose and throat; mucociliary clearance, coughing and mucosal immunoglobulins in the conducting airways and in the air-exchange region of the alveolar structures, phagocytes, opsonins, complement, surfactant and many other factors combine to clear infectious agents. The ability to mount an inflammatory response in the alveoli may represent the maximal and ultimate expression of local host defense. In some way these host defenses are combating constantly the influx of micro organisms, usually inhaled or aspirated into the airways, that try to gain a foothold on the mucosal surface and colonize it. But many general changes in overall health such as debility, poor nutrition, metabolic derangements, bone marrow suppression and perhaps aging promote abnormal microbial colonization and undermine the body's defenses that try to cope with the situation. It is a dynamic struggle. The departure from normal respiratory health may not be obvious immediately to the patient or to the physician and repeated episodes of infection or persisting symptoms of cough, expectoration and sinus or ear infections may develop before serious assessment of the situation is taken and appropriate diagnosis gotten underway. Obvious explanations for respiratory infections may be apparent and, nowadays, side effects from antineoplastic chemotherapy or immunosuppressive therapy for a variety of diseases that create an immunocompromised host are common. In a few subjects, especially young adults who present with a cumulative history of frequent but mild infections in childhood and youth, a subtle deficiency in host defenses may exist and have been partially masked because of attentive pediatric medical care and prompt use of broad spectrum antibiotics.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3844996 TI - [Hygienic requirements in producing and storing milk]. PMID- 3844998 TI - [Diagnosis and therapy principles in agranulocytosis]. PMID- 3844997 TI - [Drug disease]. PMID- 3844999 TI - [Hemorrhagic vasculitis in children]. PMID- 3845000 TI - [Occupational hazards in the work of paramedical personnel]. PMID- 3845001 TI - [Systemic lupus erythematosus]. PMID- 3845002 TI - [Use of ozocerite and other heat-transfer agents]. PMID- 3845003 TI - [Kalanchoe juice]. PMID- 3845004 TI - [Hygienic education of pregnant women and puerperae]. PMID- 3845005 TI - [Health education in preventing diseases of the teeth and periodontium]. PMID- 3845006 TI - [Work organization of a health center]. PMID- 3845007 TI - [Active detection of chronic nonspecific lung diseases on an outpatient basis]. PMID- 3845008 TI - [Prevention of maternal trauma during labor]. PMID- 3845009 TI - [Diagnosis of injuries in persons in a state of alcoholic intoxication]. PMID- 3845010 TI - [Treatment of sleep disorders]. PMID- 3845011 TI - [Errors in the diagnosis of syphilis]. PMID- 3845012 TI - [Vegetables and fruit in nutrition]. PMID- 3845013 TI - [Use of the Saliut portable electrocardiograph as a cardiac monitor]. PMID- 3845014 TI - [New health education motion pictures]. PMID- 3845015 TI - [Organization of nutrition for pupils in schools]. PMID- 3845016 TI - Nursing and health care in Israel. PMID- 3845018 TI - A critical care challenge the patient with a cervical spinal cord injury. PMID- 3845017 TI - Supervision by the critical care nurse. PMID- 3845020 TI - A conceptual approach to critical care nursing using Levine's model. PMID- 3845019 TI - Vernice Ferguson: innovative leader in nursing. PMID- 3845021 TI - Documentation: a vital link to nursing practice. PMID- 3845022 TI - Quick reference guide to pediatric emergency drugs. PMID- 3845023 TI - [Kallikrein therapy in asthenozoospermia]. PMID- 3845024 TI - Kallikrein gene expression in the rat anterior pituitary. AB - The report of 'kallikrein-like' activity in the rat neuro-intermediate lobe (N IL) and its possible involvement in pro-opiomelanocortin processing led us to explore the expression of the kallikrein gene(s) in the pituitary. Using 32P labelled rat pancreatic kallikrein cDNA, we have shown positive hybridization for rat anterior pituitary poly(A)+ RNA, of identical size on Northern blots (approximately 1.0 kb) to rat kidney poly(A)+ RNA run in parallel. Prior adrenalectomy or ovariectomy decreased the level of kallikrein mRNA seen in the anterior pituitary; total RNA from rat N-IL showed no significant hybridization. On hybridization histochemistry the anterior pituitary was strongly positive, and the neural and intermediate lobes negative. The previously reported kallikrein like activity in the N-IL is therefore probably due to a non-kallikrein kininogenase; in the anterior pituitary, kallikrein may have a physiological role in limited precursor proteolysis, but lack kininogen activity. PMID- 3845025 TI - [Puncture cytology of the breast: correlation of visual and image analysis studies with hormone receptor status]. AB - It is possible to predict to some extent the hormone receptor status of carcinomas of the breast via cytomorphology of fine needle biopsy specimens. In most cases the cytologically highly differentiated carcinomas are receptor positive and the poorly differentiated ones receptor-negative if the cases are arranged in the sequence of increasing conspicuousness of cellular criteria of malignancy. Since visual microscopic examination is subjective by nature, quantification was carried out by means of high-resolution image analysis using Pappenheim stained slides. The quantitative image analysis grading system basing on this method proved to be even more efficient than visual diagnosis. PMID- 3845026 TI - [Endometrioses in a surgical patient sample]. AB - In general surgery patients, endometrioses can occur in the gastro-intestinal tract; they can also appear as cicatricial endometrioses or can be manifested as other, rare localisations of endometriosis tissue. In many cases it is not possible to arrive at a pre-operative diagnosis which is histologically established. Hence, treatment in endometriosis of the colon is surgical resection in order to delineate it against carcinoma and for the purpose of treating cicatricial stenosis which is usually associated with endometriosis. In cicatricial endometrioses and cysts in the inguinal region, diagnosis became possible only after surgery and postoperative histological examination. PMID- 3845027 TI - [Sex life following hysterectomy]. AB - The authors report on the results of an inquiry via questionnaires on the sexual activities of 164 hysterectomised women before and after surgery. 47.5 per cent of the women stated that their sexual activities had deteriorated after the operation, whereas 13% reported an improvement. There was a significant increase in the number of women with "deteriorated" sex life after simultaneous bilateral ovarectomy (p less than 0.01). The most frequent negative sequels were a decrease in sexual appetency (42.7%) and coital activity (30.5%). Sex life deterioration became evident in 43% of the women already during the first year following the operation, further deterioration being less marked (in one to three years in 52%, and after more than 3 years after the operation in 58% of the patients). The opinion has been voiced that the time a few months before and after hysterectomy is the most critical phase in respect of mental condition and sexual activities. This critical phase can be overcome only with the close co-operation between the doctor on the one hand and the married couple on the other; both partners to the marriage must be equally amenable to counselling and advice. PMID- 3845028 TI - [Cervix priming in induced abortion in the 1st trimester using intracervical administration of sulprostone gel]. AB - In a prospective, randomised study 40 primigravidae were treated intracervically with 0.05 mg or 0.1 mg Sulprostone-Tylose gel in order to soften the cervix prior to first trimester termination of pregnancy. Curettage was performed on the average 7.5 hours after prostaglandin administration. For objective demonstration of the priming effect, the force required for dilatation of the cervical canal was measured in Newtons by a special tonometer before prostaglandin application and before operation. The maximal dilatability with a force of 10 N, the increase in dilatability after local PG application, and the patency of the cervix were measured. The occurrence of PG-induced lower abdominal pain associated with contractions was analysed with regard to the number of episodes at pain, their timing and the required amount of analgesics. A modified visual analogue scale was used to evaluate the subjective pain experience. The abortive effect of 0.1 mg Sulprostone was found to be more efficient than the 0.05 mg dose. There was no statistical significant difference between the two doses, however, for the priming effect detectable with the tonometer. The subjective experience of pain, use of analgesics and the frequency of gastrointestinal side effects were significantly higher with 0.1 mg than with 0.05 mg Sulprostone. The visual analogue scale allows the patient to quantify, at least to some extent, her experience of pain, and enables a differentiated analgetic therapy. Because of its effectiveness and low rate of side effects, the intracervical application of 0.05 mg Sulprostone gel promises to be an advantageous alternative to other methods of cervical priming. PMID- 3845029 TI - [Diagnostic conization in clinical cervix cancer]. AB - Various methods of tissue sampling are used to verify histologically a clinical carcinoma of the cervix. The question arises whether or not diagnostic cone biopsy has any influence on the treatment and/or the clinical course of this disease. The clinical and histological data and the follow-up of 185 patients with squamous cell carcinoma of the cervix were statistically evaluated. We found no difference between patients with or without cone biopsy in respect of complications, frequency of metastases or recurrences, and survival. However, our deliberations permit the following statement: cone biopsy is an appropriate method to diagnose cervical intraepithelial neoplasia (CIN) or microcarcinoma of the cervix and may--under certain conditions--even be the adequate therapy. However, cone biopsy lacks any advantage over other diagnostic methods if it is employed merely for the purpose of histological verification of clinical carcinoma of the cervix. PMID- 3845031 TI - [Non-diethylstilbestrol-induced adenosis of the vagina]. AB - A case of spontaneous vaginal adenosis in a 39-year old patient is reported. This entity is infrequently observed in comparison to the larger number of vaginal adenosis due to intrauterine DES exposure. The literature concerning the origin of these spontaneous proliferations is controversial: remnants of Wolffian or Mullerian ducts are thought to be the source, as well as metaplastic or prosoplastic changes. According to stage and extent of the disease, the individual case can be categorised into the following subgroups: cystic, florid, adenomatous and carcinomatous adenosis. Benign courses are far more frequent. Symptoms are observed only in advanced cases; therapy depends on histology, extent, and symptoms. PMID- 3845032 TI - [Carcinoma formation in a neovagina following vaginoplasty]. AB - A carcinoma occurs only very rarely in a neovagina. This extremely rare occurrence is a suitable example of an exogenous carcinogenesis. Only 6 cases have so far been reported in literature. The clinical and morphological features are discussed on the basis of the author's own observations on one of his patients. PMID- 3845033 TI - [Fetal therapy. Ethical problems as a result of prenatal diagnosis]. AB - If a severe hereditary disease is confirmed by prenatal diagnosis, often the only "therapy" available is the termination of pregnancy or induced abortion on the grounds of genetic or "foetal" indication, a "therapy" which is of course unsatisfactory. However, now a chance of prenatal intrauterine therapy seems to be offered via the innocuous imaging methods of diagnosis, such as sonography, echocardiography, and magnetic resonance. Ethical considerations on foetal include the following problems discussed in the present article: 1. What do we know on the basis of studies conducted to date on the risk/benefit ratio? 2. How is the moral and legal status of the foetus affected by the fact that the foetus is now accessible to medical treatment? 3. What are the implications of the fact that foetal therapy is now possible, in respect of the ethical and legal assessment of termination of pregnancy? 4. What are the problems arising for the doctor with regard to his role as a physician who has pledged himself to help mankind, if he starts treating the foetus? 5. What are the possible implications and effects of foetal therapeutic practice on the problems of research on and with foetuses? PMID- 3845034 TI - [Gynecologic and cytogenetic aspects of prenatal diagnosis in the 1st trimester of pregnancy]. AB - The article reports on a new method in prenatal diagnosis during the first three months of pregnancy. The gynaecological as well as the cytogenetic aspects are discussed on the basis of 74 transcervical trophoblast aspirations. Two different experimental preliminary examination series were conducted. In the first study, the failure rate in respect of recovery of material was 12.5%, whereas in the second examination series all aspirations were successful. Thanks to these favourable results, transcervical trophoblast aspiration was adopted as the only method used in prenatal diagnosis. In cytogenetic processing, direct chromosome preparation was found to be rather costly and time-consuming, whereas the short term culture of chorionic villi usually yielded more favourable results in respect of mitotic rate and quality of the metaphase plates. It must be considered a drawback of transcervical trophoblast aspiration that it is not possible to conduct alpha-foetoprotein determination or determination of acetylcholine esterase as part of prenatal neural tube diagnosis. However, this can be subsequently done-with suitable disposition--during the 16th week of pregnancy, or can be replaced by a determination of alpha-foetoprotein in the serum of pregnant women. PMID- 3845030 TI - [Are there genetic risk factors in the occurrence of choriocarcinoma?]. AB - Now that we know about the genetic production mechanisms of diseases of the trophoblast, interest is concentrated on the question which risk factors can produce a disposition in the patient - seen from a clinico-genetic angle - towards malignancy of a complete mole. Many years before the genetic interrelations became known, there had been discussions on blood relationship as a possible aetiological factor in the production of chorionic carcinoma. Since consanguinity in preceding generations can lead to a selection of certain genotypes, this question was reexamined on a limited patients material (10 patients with chorionic carcinoma and 11 with mole). The negative result of this study contradicts - similar to other recent publications on this subject - the hitherto frequently advanced hypothesis that homozygotism is responsible, for a recessive "onko" gen, for rendering a complete mole malignant. Recent investigations, for example, point to a close correlation between the presence of a Y chromosome in a complete mole, and malignancy. PMID- 3845035 TI - [Home care of patients with respiratory insufficiency]. PMID- 3845036 TI - [Cancer pain must be relieved. Global treatment program for pain recommended by the WHO]. PMID- 3845038 TI - Wooton--a clinic twice reborn. PMID- 3845037 TI - [The WHO Executive Council underlines the primordial role played by nursing personnel in primary health care]. PMID- 3845039 TI - Leg ulcer treatment. The healing solution? PMID- 3845040 TI - A contribution to care. Volunteers wanted. PMID- 3845041 TI - The way we care. Attitudes. PMID- 3845042 TI - A day out. A change of scene. PMID- 3845044 TI - Film making. 'A bit of life'. PMID- 3845043 TI - Hypothermia. Keeping out the cold. PMID- 3845045 TI - Pet therapy evaluated. The Kingsmead cats. PMID- 3845046 TI - A question of friendship. PMID- 3845047 TI - Careers. The nurse anesthesia profession: challenges and choices. PMID- 3845048 TI - Substance abuse in nursing: how to recognize it, what to do. PMID- 3845049 TI - Impaired nursing practice: ethical and legal issues. PMID- 3845050 TI - Impairment and the student of nursing. PMID- 3845052 TI - Letter to the new graduate. PMID- 3845051 TI - Nursing externships: what are they? PMID- 3845053 TI - [Thrombocytopenia: a complication of viral infections]. PMID- 3845054 TI - [The management of specialized equipment]. PMID- 3845055 TI - [Bioethics and others]. PMID- 3845056 TI - [The gynecologic exam: a problem for women, a challenge for nurses]. PMID- 3845057 TI - [Infection prevention in the hospital. 2. Methodology for the isolation of patients]. PMID- 3845058 TI - [Verify, revise and redo]. PMID- 3845059 TI - [Patients' opinion of care]. PMID- 3845060 TI - Digestion of elastin by porcine pancreatic elastase I and elastase II. AB - Elastin was fully solubilized by digestion with elastase I or elastase II. Each digest was separated into high-molecular weight and low-molecular weight fractions that were characterized by the correspondence to their amino acid content, N-terminal sequence and C-terminal amino acids. It was found that although the relative amount of amino acids in the low-molecular weight fraction obtained by digestion with elastase I was lower than in digestion with elastase II, no major difference in the type of bonds cleaved in the low- or high molecular weight fractions of each digest could be seen. There is, however, a remarkable difference in the type of bond cleaved by the two enzymes. While elastase I cleaves mostly Ala-Ala and also Ala-Gly bonds, elastase II hydrolyzes Leu-Ala, Leu-Gly, Phe-Ala, Phe-Gly and Tyr-Ala, Tyr-Gly bonds. Theoretical calculations led us to suggest both digests are composed of cross-linked peptides that vary not only in the molecular size but also in the number of cross-links found in peptides of the same size. PMID- 3845061 TI - Genotypic approaches to the diagnosis of bacterial infections: plasmid analyses and gene probes. AB - Practical genetic approaches have been helpful in the diagnosis, epidemiology, and taxonomy of bacterial pathogens encountered in our laboratory at the Centers for Disease Control. There are many examples in which plasmid profiles have been used to define epidemic strains of enteric bacteria, staphylococci, pseudomonads, vibrios, and other pathogenic bacteria. Current methodologies should allow the microbiology laboratory to use plasmid profiles routinely and to identify plasmids associated with bacterial pathogenesis. Simplified DNA-DNA hybridization procedures have been used in our laboratory to survey or "probe' thousands of Escherichia coli colonies for the presence of enterotoxin genes, eliminating traditional tissue culture or animal assays. Research scientists continue to develop gene probes for a number of bacterial toxins and hemolysins and for the identification of pathogens such as legionellae and salmonellae. These and other probes as well as hybridization "kits' may be commercially available to diagnostic laboratories within the next few years. PMID- 3845062 TI - Antibody response to somatic antigen of Salmonella typhi in areas endemic and non endemic for typhoid fever. AB - In sera obtained between the 6th and the 30th day from 16 Austrian and 26 Hong Kong patients with culturally verified typhoid fever, agglutinating antibodies (microagglutination test) at significant titers were detected in 93% of the Austrian (median titer: 640) but in only 50% of the Hong Kong patients (median titer: 240). Similar results (93% and 54% positive sera respectively) were obtained for specific IgM as assessed by the enzyme-linked immunosorbent assay (ELISA) using lipopolysaccharide of S. typhi as antigen (median relative titer: 0.32 and 0.21 respectively). In contrast, specific IgG at significant concentrations were found in only 69% of the Austrian (median relative titer: 0.16) but 88% of the Hong Kong sera (median relative titer: 0.71). The (IgM detecting) microagglutination test may be sufficiently diagnostic for typhoid fever in nonendemic areas such as Austria. In endemic regions like Hong Kong, however, tests indicative for early specific IgG are indispensable for serological diagnosis of the disease. The ELISA proved useful and is an example for such tests. PMID- 3845063 TI - Enterobacter mediastinitis following cardiac surgery. AB - Eight cases of sternal/mediastinal infection due to Enterobacter species were seen in postoperative cardiac patients during 1980 to 1981. The attack rate was 14.5% (8/55), compared to 3.7% (2/54) for an identical period in 1979 to 1980 (p less than 0.05). Cases varied in severity from fulminant, acute bacteremic infections (one death) to less severe wound infection. Late complications or recurrences were not seen. There was a hospital-wide increase, relative to all other gram-negative bacillary isolates, in Enterobacter laboratory isolations, but no increased rate of infection in any other specific surgical condition. No personnel, materials, or techniques were associated with the outbreak, and all but two environmental cultures were negative. Case-control analysis suggested that surgical complications and prophylactic cephalosporins were associated with infection. Prospectively, an additional 85 cardiac surgery patients had increased Enterobacter skin/wound colonization following perioperative prophylaxis with cephalosporin antibiotics. After introduction of barrier isolation and restriction of contacts no further mediastinitis occurred in 100 subsequent cardiac surgery patients. This study indicates that Enterobacter may be major pathogens causing post-cardiac-surgery infection not prevented by cephalosporin prophylaxis. PMID- 3845064 TI - Lack of nosocomial spread of Varicella in a pediatric hospital with negative pressure ventilated patient rooms. AB - All patients at the new British Columbia's Children's Hospital with chickenpox or Herpes zoster are nursed with appropriate precautions in single-bed rooms provided with negative pressure ventilation. Over a period of 1 year, no nosocomial infections were detected on follow-up of 110 susceptible patients who had been on wards at the same time as six cases of chickenpox and one immunocompromised patient with cutaneous dissemination of Varicella zoster. In a preceding study at the previous hospital, with similar staff, control measures, and patient population, in an isolation facility without negative pressure ventilation, nosocomial infections occurred in seven out of 41 susceptible patients who were on the same ward as two patients with chickenpox. These findings suggest that a simple negative pressure ventilation system without air locks is a useful adjunct in the control of cutaneous Varicella infections. PMID- 3845065 TI - Q fever and experimental sheep. From the International Council for Laboratory Animal Science. PMID- 3845066 TI - Enterobacter. PMID- 3845067 TI - Room humidifiers and hospitals. PMID- 3845068 TI - Morbidity and mortality rates for peripheral vascular surgery. PMID- 3845069 TI - The transmission of infections in hospitals by staff carriers, methods of prevention and control. PMID- 3845070 TI - The hidden shame: wife assault. PMID- 3845071 TI - All you wanted to know about grants but didn't know who to ask. PMID- 3845072 TI - Home care agencies and health care competition. PMID- 3845073 TI - After your client quits smoking. Hospital pressure vs. self-motivation. PMID- 3845074 TI - "For mom with love". A nurse's perspective on death and dying. PMID- 3845075 TI - Supervising the independent health care contractor: using the contract to limit your liability. PMID- 3845076 TI - Home health aides: the changing role one agency's experience. PMID- 3845077 TI - Community support for families caring for members with Alzheimer's disease. PMID- 3845078 TI - Differences in ability of cell-wall antibiotics to suppress emergence of rifampicin resistance in Staphylococcus aureus. AB - Rifampicin resistance developed easily in methicillin-susceptible and methicillin resistant strains of Staphylococcus aureus during an overnight incubation in broth containing 0.1 mg/l of rifampicin. Incubation of methicillin-susceptible Staph. aureus and 0.1 mg/l of rifampicin with 1 mg/l of nafcillin reduced the emergence of rifampicin resistance with only 5 of 50 strains (10%) becoming rifampicin-resistant. However, incubation of the methicillin-susceptible or methicillin-resistant strains with 0.1 mg/l of rifampicin and 1 mg/l of vancomycin did not prevent the development of rifampicin resistance. Rifampicin resistance developed in 25 of 50 (50%) of methicillin-susceptible and 32 of 50 (64%) methicillin-resistant Staph. aureus strains tested. These data would suggest that differences exist in the abilities of nafcillin and vancomycin to suppress the development of rifampicin resistance in Staph. aureus (P less than 0.01). Caution should be exercised when the combination of vancomycin and rifampicin is used for infections caused by Staph. aureus and Staph. aureus isolates recovered during therapy should be monitored for the development of rifampicin resistance. PMID- 3845079 TI - Piperacillin activity and anaerobic infections. PMID- 3845080 TI - Full expression of methicillin resistance in Staphylococcus aureus. PMID- 3845081 TI - 5-Methyl-2-thiouridine in the tRNA of Candida tropicalis and its localization in lysine tRNA. AB - 35S incorporation studies showed that Candida tropicalis tRNA contained two thionucleosides, one of which was identified as 5-methyl-2-thiouridine. The other thionucleoside was alkali labile, and it appeared to be an ester. Pulse-chase experiments suggested that the two thionucleosides were structurally related. 5 Methyl-2-thiouridine was present in one of the lysine tRNAs. This is the first report of the presence of this nucleoside in a yeast tRNA. PMID- 3845082 TI - The elderly--victims of the gross national product. PMID- 3845083 TI - Management problems associated with ileoanal reservoir. PMID- 3845085 TI - Conventional ileostomy converted to a Kock continent ileostomy: social and psychological significance as perceived by two individuals with conversions. PMID- 3845084 TI - A multidisciplinary approach to services for enterostomy patients. PMID- 3845087 TI - Levels of measurement. PMID- 3845086 TI - Drug actions on the lower urinary tract. PMID- 3845088 TI - An enterostomal therapy services brochure--a visual aid. PMID- 3845089 TI - Computerization of patient acuity and nursing care planning. New approach to improved patient care and cost-effective staffing. AB - Patient classification systems are essential for nurse administrators to justify nursing staff and to project budget. To answer these needs effectively, a computerized patient classification system must be customized to existing physical and human resources within each health care facility. Nursing administrators at Riverside Medical Center met this need by developing a computerized patient classification system that integrates patient acuity with patient care plans and nursing diagnoses. Direct cost accounting of nursing care according to patient needs and outcomes can be justified by correlating this management and practice data. PMID- 3845090 TI - Microcomputers in nursing administration. A software overview. AB - The current environment of prospective payment systems and cost control requires nursing administrators to have fast access to useful, reliable information. Microcomputers can be used by individuals who are not computer experts to generate that information. This article discusses the various types of computer software used on microcomputers and gives examples of nursing administration applications for microcomputer software. PMID- 3845091 TI - Patient abuse should be your concern. AB - Are patients in your hospital ever abused by staff or by other patients? If you think the answer to this question is no, read on. This article discusses the nature of patient abuse, its causes, signs, and symptoms. Most important, it will give you guidelines for investigating and preventing patient abuse. PMID- 3845093 TI - Self-mentoring strategies. PMID- 3845092 TI - Gamesmanship: the art of strategizing. AB - How can you turn your personal power into organizational power? By recognizing that the hospital or university is motivated by politics and using the political system to your advantage. Learn how to select and use specific approaches and tactics to increase your effectiveness. PMID- 3845094 TI - Field Methods: Research in the natural setting. PMID- 3845096 TI - Good nurses, bad nurses. A patient's-eye view. PMID- 3845095 TI - Comparison of cefoperazone sodium vs methicillin, ticarcillin, and tobramycin in treatment of pulmonary exacerbations in patients with cystic fibrosis. PMID- 3845097 TI - Ruth Lichtenberger's outlandish dream. A JCN interview with the general director of NCFI. PMID- 3845098 TI - The miracle of everyday healing. Expecting the extraordinary can be dangerous. PMID- 3845099 TI - Explaining leukemia to classmates. PMID- 3845100 TI - Adolescent amputee ski rehabilitation program. PMID- 3845101 TI - One step at a time: summer camping for children with cancer. PMID- 3845102 TI - Integrating the research concept into the staff nurse role. PMID- 3845103 TI - Dynamics of the family of a child with cancer. PMID- 3845104 TI - Approaches to sampling. PMID- 3845105 TI - Psychological assessment of the adolescent with cancer. PMID- 3845106 TI - In support of placebos: making do with make-believe. PMID- 3845107 TI - Indwelling urinary catheters: how's your technique? PMID- 3845108 TI - Urinary tract infections. PMID- 3845110 TI - Bed positioning. PMID- 3845109 TI - Aids to independence. PMID- 3845111 TI - New drug delivery systems. PMID- 3845112 TI - Your CE topic this month (No. 5). Multidisciplinary treatment of rheumatoid arthritis. PMID- 3845113 TI - Postpartum disorders. Mother-infant bonding on a psychiatric unit. PMID- 3845114 TI - Recognizing transference and countertransference. PMID- 3845115 TI - Supervising clinical practice in psychosocial nursing. PMID- 3845116 TI - Measuring the aftermath of rape. PMID- 3845117 TI - Preparing nurse-educators. Who should teach undergraduates? PMID- 3845118 TI - Humanistic care of the patient in seclusion. PMID- 3845120 TI - Nasal carriage of Staphylococcus aureus in a population of healthy Nigerian students. AB - The nasal carrier-rate of Staphylococcus aureus in 548 Nigerians aged 9-32 years and attending various educational establishments was 56.4%. This rate decreased with increasing age. A significantly greater proportion of females (65.0%) than males (46.5%) were carriers, but the excess in females was apparent only in subjects aged greater than 20 years. Mucoid strains of S. aureus, which gave a negative slide-coagulase reaction, were found in 21.5% of carriers aged 10-15 years, but were absent from members of other age-groups. A considerable proportion of all the strains tested were resistant to commonly used antibiotics. PMID- 3845119 TI - Antibiotic resistance in Staphylococcus aureus isolated at an Australian hospital between 1946 and 1981. AB - A total of 517 strains of Staphylococcus aureus isolated at a hospital in Melbourne, Australia between 1946 and 1981 was examined for resistance to a range of antimicrobial agents and for the presence of plasmid DNA. The use of mixed culture transfer and restriction endonuclease analysis showed that the determinants for resistance to penicillin and to the heavy metals were carried by several related plasmids of (15-23) X 10(6) mol. wt, and that tetracycline resistance was encoded on a plasmid of 2.8 X 10(6) mol. wt in strains isolated before 1970. These phenotypes were chromosomally encoded in the majority of strains isolated thereafter. Resistance to chloramphenicol throughout the study period was plasmid-mediated. Of five aminoglycoside-resistance phenotypes, one was plasmid-mediated and three were chromosomally encoded. The remaining phenotype, specifying low-level gentamicin resistance, was found to be located on the chromosome of early isolates, but in later strains was borne by an 18 X 10(6) mol. wt plasmid which also encoded resistance to quaternary ammonium compounds. PMID- 3845121 TI - Antimicrobial resistance in coagulase-negative staphylococci. AB - Patterns of resistance to antimicrobial agents were studied in 193 strains of coagulase-negative staphylococci isolated from hospital patients. Strains isolated from patients with malignant disease were significantly more often resistant to sulphonamide, trimethoprim, gentamicin and methicillin than were strains from other sources. Susceptibility to various beta-lactam antibiotics and aminoglycosides was investigated in members of the two most frequent species: Staphylococcus epidermidis and S. haemolyticus. S. haemolyticus strains were not only more often resistant to methicillin than S. epidermidis strains (respectively 81% and 17%) but they were more highly resistant (mean MICs respectively 85 and 19 mg/L). Methicillin-resistant S. haemolyticus strains were highly resistant to nine other beta-lactam antibiotics, whereas methicillin resistant S. epidermidis strains showed both lower levels and a narrower spectrum of cross-resistance. Resistance to methicillin in members of both species was "heterogeneous", i.e., only a minority of cells in a culture showed significant resistance. Almost all gentamicin-resistant strains were sensitive to netilmicin and amikacin; rifampicin, vancomycin and teicoplanin were also highly active in vitro. PMID- 3845122 TI - Structure of ribosome-bound messenger RNA as revealed by enzymatic accessibility studies. AB - Digestion with ribonuclease T2 has been used to study the size of poly(U) protected by ribosome binding. Several different preparations of ribosomes all appear to cover 49 nucleotides of message; however, there are two partially accessible internal nuclease cleavage sites, which yield, ultimately, fragments 20, 16 and 13 nucleotides in length. Curiously, the site between fragments of length 20 and 16 is accessible to RNase T2 but not to the several much smaller RNases. Arguments based on the quantitative pattern of cleavage and comparisons with previous studies lead to the conclusion that the 20-mer is the 5' fragment, while 13-mer (which is lost the moment it is cleaved from the 16-mer) is the 3' fragment. Both ribosome-bound tRNAs appear to contact only the 16-mer. The presence of the two internal cleavage sites fits nicely with recent electron microscopic data suggesting that mRNA forms a loop around the 30 S subunit. PMID- 3845123 TI - Mouse egg extracellular coat is a matrix of interconnected filaments possessing a structural repeat. AB - As the result of a combined biochemical and electron microscopic investigation, hitherto unrecognized structural features of the mouse egg extracellular coat, or zona pellucida, have been revealed. Specimens were prepared for electron microscopy by spraying individually isolated zonae pellucidae onto a substrate and were observed by both rotary shadowing and negative staining techniques. Results of these experiments suggest that the three zona pellucida glycoproteins, ZP1 (200,000 Mr), ZP2 (120,000 Mr) and ZP3 (83,000 Mr), are organized into long filaments. Negatively stained zona pellucida filaments resemble "beads-on-a string", with each bead (9.5 nm in diameter) located every 17 nm or so (center-to center distance) along the axis of the filament. The filaments, in turn, appear to be interconnected by one of the three zona pellucida glycoproteins, ZP1, giving rise to a three-dimensional matrix. Proteolysis of ZP1 by chymotrypsin or reduction of intermolecular disulfides of ZP1 by dithiothreitol results in both solubilization of zonae pellucidae and disruption of interconnections between individual zona pellucida filaments. These observations suggest that the zona pellucida, which plays important roles both during and after fertilization of mammalian eggs, is a highly organized extracellular coat in which glycoproteins are assembled into filaments possessing a recognizable structural repeat. PMID- 3845124 TI - Diabetic retinopathy: the path to blindness can be blocked. PMID- 3845125 TI - What's new in contact lenses? PMID- 3845126 TI - A conservative approach to radial keratotomy. PMID- 3845127 TI - Cross cylinder function. PMID- 3845129 TI - [Bioethics seminar. 12. For the future of nursing]. PMID- 3845130 TI - [Profile of a nurse: Ms. Nachiko Kato who returned to clinical nursing after 20 years of teaching]. PMID- 3845128 TI - Document ocular pathology with ophthalmic photography. PMID- 3845131 TI - [Record by a cancer patient. A positive attitude even when the voice is lost. 1. Discovery of cancer]. PMID- 3845132 TI - [Working as a public health nurse in Indonesia. An island called Sulawesi]. PMID- 3845133 TI - [Emergency treatment as team care: from primary care to critical care]. PMID- 3845134 TI - [Gathering and recording of information on emergency patients]. PMID- 3845135 TI - [Nursing planning at the initial examination: practice of triage by nurses]. PMID- 3845136 TI - [Approach to trauma patients: on nursing actions for 2 patients who permanently lost part of body functions]. PMID- 3845137 TI - [Approach to burn patients: experiences with 2 cases with ICU syndrome and a respiratory tract burn]. PMID- 3845138 TI - [Management of alcoholism, drug intoxication, and attempted suicide]. PMID- 3845139 TI - [Responses to family members of patients in medical crises]. PMID- 3845140 TI - [Basic steps in emergency care]. PMID- 3845142 TI - [Report from hospices: care of dying patients. 1. The current status of Yodogawa Christian Hospital Hospice]. PMID- 3845141 TI - [Home nursing 11. On problem cases observed in home nursing]. PMID- 3845143 TI - [Psychology of pain (3). Psychodynamics of pain]. PMID- 3845145 TI - [Primary nursing (1)]. PMID- 3845144 TI - [Physical training at a home for the aged. 9. The meaning of assistance]. PMID- 3845146 TI - [Vital signs (2). The vital signs, the best aid in nursing]. PMID- 3845147 TI - [Continuation of the Neurosurgical Nursing Research Group]. PMID- 3845148 TI - [Management of adverse effects of cancer therapy: nursing of a patient with acute symptoms probably due to the adverse effect of antineoplastic agents]. PMID- 3845149 TI - [Care of stomatitis associated with the treatment of cancer]. PMID- 3845150 TI - [Use of honey to ease the pain of stomatitis during radiotherapy]. PMID- 3845151 TI - [Improved nursing of patients receiving cisplatin: keypoints in easing nausea and vomiting and guidance in the diet]. PMID- 3845153 TI - [Nursing of a patient with chronic renal failure: a lesson in nursing of a terminal patient]. PMID- 3845152 TI - [Home nursing by nurses from a rehabilitation ward]. PMID- 3845154 TI - [A monologue by a nursing director: efforts by a nursing director]. PMID- 3845155 TI - [Reports from hospices (2): care of dying people. Daily activities at a hospice]. PMID- 3845156 TI - [Therapeutic basis of the treatment of pain]. PMID- 3845157 TI - [Rehabilitation department of a home for the aged. 10. Care to assist the patient toward self-sufficiency: establishment of a policy independent of circumstances]. PMID- 3845158 TI - [Questions and answers on rehabilitation. 11. Environmental changes and health of children]. PMID- 3845159 TI - [Counseling for the patient. 1. Definition of counseling]. PMID- 3845160 TI - [Profile of a nurse. Mr. Kazuo Hayakawa, a male nurse specializing in regional psychiatric nursing]. PMID- 3845162 TI - [Public health nursing in Indonesia. 2. Acceptance of the inhabitants as they are]. PMID- 3845161 TI - [Record by a cancer patient. Positive attitude in spite of a loss of the voice. 2. From the hell to the heaven]. PMID- 3845163 TI - [Intracystic ultrasonic emulsification and suction of cataract under microscopy: a trial at Hara Ophthalmic Hospital]. PMID- 3845164 TI - [Definition of primary nursing (2). Actions of the primary nurse]. PMID- 3845166 TI - [Fasting as therapy]. PMID- 3845165 TI - [Re-evaluation of the daily care. 39. Privacy of patients]. PMID- 3845167 TI - [Nurses' view. Development of nursing treatment: a suggestion for diversification of the nursing service]. PMID- 3845168 TI - [Facing the third year in clinical nursing: establishment of individual nursing philosophy]. PMID- 3845169 TI - [Nurses in the third year of clinical practice: an observation during in-service training]. PMID- 3845170 TI - [Problems at the 3d year of clinical nursing. The learning experience as a guide for self-expression: self development in nursing practice]. PMID- 3845171 TI - [Independent nursing study (a nursing seminar): a reflection on the activities during the first 3 years of nursing]. PMID- 3845172 TI - [Problems at the 3d year of clinical nursing: lessons learned at the nursing seminar]. PMID- 3845173 TI - [Bedside nursing. Interactions with a terminal patient: a case of Pancoast-type lung cancer with acute pain]. PMID- 3845174 TI - [Bedside nursing. Nursing of a patient with marble bone disease with fracture of the left femoral neck]. PMID- 3845176 TI - [Joint recreational activities of the psychiatric and pediatric wards: a trial at liaison psychiatric nursing]. PMID- 3845177 TI - [Joint recreational activities of the psychiatric and pediatric wards: the response of the pediatric ward]. PMID- 3845175 TI - [Computation of calories and water contents of food items at the ICU: use of a pocket computer]. PMID- 3845178 TI - [Home nursing: clinical report 13. Home care in an area with heavy snow falls]. PMID- 3845179 TI - [Monologue by a nursing director: communication difficulty with a foreign patient]. PMID- 3845180 TI - [Reports from hospices. 3. Care of dying patients. The final moment of life]. PMID- 3845181 TI - [Clinical aspects of pain. 11. Chemotherapy (11). Causes of pain and selection of drugs]. PMID- 3845182 TI - [Physical therapy department at a home for the aged. 11. Methodology specific to life activities: the use of the buzzer by a patient to call nurses]. PMID- 3845184 TI - [Counseling of the patient. 2. Definition of counseling]. PMID- 3845183 TI - [Questions and answers on rehabilitation. 12. Progress in the past 10 years]. PMID- 3845185 TI - [Profile of a nurse: Ms. Sonia Maria Tokunaga, a nursing student from Brazil]. PMID- 3845186 TI - [Record by a cancer patient. A positive attitude in spite of loss of vocal function. 3. Return of the agony]. PMID- 3845187 TI - [Public health nursing in Indonesia. 3. Life in a village]. PMID- 3845189 TI - [Physiopathology and diagnosis of hydrocephalus]. PMID- 3845188 TI - [Mechanism of the development of hydrocephalus]. PMID- 3845190 TI - [Surgical therapy of hydrocephalus]. PMID- 3845191 TI - [Postoperative management of patients with hydrocephalus and complications following shunts]. PMID- 3845192 TI - [Long-term prognosis of children with hydrocephalus]. PMID- 3845194 TI - [Intraoperative care of children with hydrocephalus and management of postoperative complications]. PMID- 3845193 TI - [Establishment of nursing criteria for patients with hydrocephalus--based on nursing of patients undergoing shunts]. PMID- 3845195 TI - [Meningitis following shunt surgery of children with hydrocephalus]. PMID- 3845196 TI - [Home care of children with hydrocephalus--shunt care by families and instructions on daily activities]. PMID- 3845197 TI - [Nursing of a child with hydrocephalus complicated by myelocele]. PMID- 3845198 TI - [Nursing of a child with hydrocephalus who underwent repeated hospitalization due to malfunction of the shunt tube following a period of home nursing]. PMID- 3845199 TI - [Nursing of an adult with hydrocephalus]. PMID- 3845200 TI - [Regional nursing of handicapped children--an observation on the care of children with hydrocephalus]. PMID- 3845201 TI - [Sudden infant death syndrome]. PMID- 3845202 TI - [Oral medication to supplement kidney function]. PMID- 3845203 TI - [Endoscopic sclerotherapy of esophageal varices]. PMID- 3845204 TI - [Designing of an artificial testis and its clinical application]. PMID- 3845205 TI - [A new technic of colostomy--use of a stapling instrument]. PMID- 3845206 TI - [Surgical treatment of chronic constipation]. PMID- 3845207 TI - [Intracranial hypertension and its clinical management]. PMID- 3845208 TI - [Keypoints in nursing of patients with raised intracranial pressure]. PMID- 3845209 TI - [Experience in nursing of patients with locked-in syndrome--establishment of communication with the patients]. PMID- 3845210 TI - [Cleansing of the patient's body as a nursing technic--evaluation based on the effects on skin temperature and thermal flow]. PMID- 3845212 TI - [Responsibilities in education of diabetic patients]. PMID- 3845211 TI - [Surgical nephrostomy]. PMID- 3845213 TI - [Trend in nursing education in China]. PMID- 3845214 TI - [The present status and the future of nursing education in China. The addition of specialty departments in nursing for the overall improvement of nursing education]. PMID- 3845215 TI - [The present status and future of nursing education in China. Evaluation of test methods for intellectual development]. PMID- 3845216 TI - [Planning of teaching "adult health" in the adult nursing course]. PMID- 3845217 TI - [Nursing education. 31. Graduate nursing education in the United States]. PMID- 3845218 TI - [Methodology and problems in nursing education: solution of problems at the educational scene. 7. Purpose expressed as a symptom: the use of Popham's method]. PMID- 3845219 TI - [Nurturing sensitivity in nursing--a problem in the teacher-nursing student relations]. PMID- 3845220 TI - [On nursing education. 32. Doctoral education in nursing]. PMID- 3845222 TI - [Personal view on the theory and methodology to improve the practical nursing capability]. PMID- 3845221 TI - [Methodology and problems in nursing education: solution of problems at the nursing scene. 8. Analysis of teaching goal: theoretical analysis of the task]. PMID- 3845223 TI - [Speech given at the 55th Igaku Shoin Nursing Seminar: on clinical teaching]. PMID- 3845224 TI - [Philosophy of terminal care]. PMID- 3845225 TI - [Problem of modern nursing education. Improvement and implementation of clinical training of nursing technology]. PMID- 3845228 TI - [Re-evaluation of public health nursing activities in Akita Prefecture. Health examination of inhabitants]. PMID- 3845226 TI - [Collection and utilization patient information by nursing students: the relationship with nursing plans for patients before and after laparotomy]. PMID- 3845227 TI - [Re-evaluation of public health nursing activities in Akita Prefecture. Cooperation of citizen]. PMID- 3845229 TI - [Re-evaluation of public health nursing activities in Akita Prefecture. Recognition of the importance of regional health care]. PMID- 3845230 TI - [Re-evaluation of public health nursing activities in Akita Prefecture. Experience of a new public health nurse in a historical town]. PMID- 3845231 TI - [Re-evaluation of public health nursing activities in Akita Prefecture. Love of the work of public health nursing]. PMID- 3845232 TI - [Re-evaluation of public health nursing activities in Akita Prefecture. Frustration and mental fatigue associated with the work]. PMID- 3845233 TI - [Re-evaluation of public health nursing activities in Akita Prefecture. A discussion by young public health nurses]. PMID- 3845234 TI - [Current trends in the operation of public health clinics--with special reference to apportioning of the operating fund as a grant]. PMID- 3845235 TI - [Competition among towns to attract graduating public health nurses]. PMID- 3845237 TI - [Description of home nursing and family guidance program for aged bedridden patients at Kyoto]. PMID- 3845236 TI - [From re-evaluation to establishment of a perspective in public health activities. Establishment of sound nursing bodies: an approach comprising the first, second, and third viewpoints]. PMID- 3845238 TI - [From re-evaluation to the establishment of a prospect in the care of a terminal cancer patient who wishes to spend the last days at home]. PMID- 3845239 TI - [Repeated transfers of an apoplexy patients among several hospitals]. PMID- 3845240 TI - [Status of nursing of aged, bedridden patients at home and the evaluation of their of nursing care needs. (3). Activities of family helpers]. PMID- 3845241 TI - [Status of health and living conditions of the aged residing in a public health nursing district]. PMID- 3845242 TI - [Agreement on the value concepts among public health nurses--initiation of an organized home nursing program for the aged, bedridden patients]. PMID- 3845243 TI - [Continued care of a patient with amyotrophic lateral sclerosis]. PMID- 3845245 TI - [Nursing education system]. PMID- 3845244 TI - [Expectation of public health nursing staff on head nurses: discussion]. PMID- 3845246 TI - [Nursing curriculum]. PMID- 3845247 TI - [Administration in nursing education]. PMID- 3845248 TI - [Survey report on nursing education, 1984]. PMID- 3845249 TI - [Community health nursing in Korea]. PMID- 3845250 TI - [Past and present of public health nursing]. PMID- 3845251 TI - [Case study]. PMID- 3845253 TI - [Nursing education for the Korean Society in the 21st century]. PMID- 3845252 TI - [Study on model for promotion of school health]. PMID- 3845254 TI - [Relationship between posture and electromyographic activities of lower leg muscles]. PMID- 3845255 TI - Evaluation of the North Carolina Risk Reduction Program for smoking and alcohol. AB - Seventh grade students in two school systems in rural North Carolina were subjects for a program designed to reduce health risks associated with use/abuse of tobacco and alcohol. One school system was located in the central area of the state, and the other in the western mountains. Both groups were assessed before and after introduction of novel teaching programs dealing with alcohol and tobacco. Knowledge about smoking and alcohol increased in both sites (p less than .05). Attitudes toward alcohol did not change. Attitudes toward smoking eroded in both sites, with attitudes at one site showing a severe erosion (p less than .05). Smoking education in these communities may have conflicted strongly with ambient attitudes toward smoking, eliciting a "boomerang" effect. PMID- 3845256 TI - High school students' perceptions and misperceptions of AIDS. AB - This study examines the knowledge, beliefs, and sources of information of junior and senior high school students concerning AIDS. The students were found to have a very limited knowledge of AIDS. Males were more knowledgeable about AIDS than were females, but the majority of students were not personally worried about contracting AIDS. The primary sources of AIDS information were TV, newspapers, magazines, and radio. Schools were one of the least often mentioned sources of information. PMID- 3845257 TI - A nutrition curriculum for families with high blood pressure. AB - A nutrition curriculum for 48 students age eight-18 years with high blood pressure was implemented in Franklinton, La., as part of A Dietary/Exercise Alteration Program Trial (ADAPT), a model promoting reduced sodium (Na+) and energy intake and increased potassium (K+) intake. A teacher guide listed basic concepts, teacher and student activities, materials, behavioral outcomes, and evaluation for 12 lessons at three age levels. Games were used to present new information and increase student involvement. Taste-tests promoted attitude change regarding acceptable snacks. Decision-making and assertiveness topics facilitated independent food choices and coping with peers. Self-monitoring of intakes encouraged personal responsibility for eating behavior. Results of paired t-tests showed knowledge increased 8.7% in the spring (p less than 0.01), 4.9% in the summer (N.S.), and 7.3% in the fall (p less than 0.0001). No significant differences in increase in posttest scores by age were found. Comparisons of curriculum compliance with medication use and blood pressure change showed no relationship. A multiple regression analysis of sodium-creatinine (Na+/Cr) ratios on class attendance and posttest scores showed that children with the highest test scores had lower Na+/Cr ratios. This program increased information and skills for those motivated to change lifestyle to control obesity and blood pressure. PMID- 3845258 TI - Emotions and obesity among Mexican-American children. AB - The purpose of this study was to determine what relationships, if any, existed between high levels of body fat and emotional motivations for eating among Mexican-American children. Subjects (N = 177) were drawn from children aged 10-14 years who participated in the National Youth Sports Program in the Lower Rio Grande Valley region of Texas. Data were gathered through a self-report instrument dealing with emotional motivators involved in eating and through individual anthropometric measurements. Data analysis revealed that for the boys, a significant relationship existed between high percent body fat and the emotional motivation of stimulation. Handling and craving motivators were significantly related to high body fat for girls. PMID- 3845259 TI - Starting a peer counseling program in the high school. AB - Peer counseling has become more prevalent in high schools and junior high schools across the country. When reviewing the various programs, it was discovered that they fall into two general categories based on the program's purpose and group composition. The two basic models can be described as students trained to help troubled students in their school (open), and troubled students trained to help themselves (closed). The terms open and closed were chosen to distinguish the two models because these terms describe whether or not the group's focus and objectives are closed or open to students outside the group. The purpose of this article is to give a practical, working description of the open model as implemented in a large, suburban high school. PMID- 3845260 TI - Seat belts in school buses. PMID- 3845261 TI - School nursing in Great Britain. AB - According to a school nurse from Woking, Surrey, "school nurses in Great Britain are a group who are just developing and finding their own identity." In a country that offers short courses on the nursing of elderly people, care of the violent or potentially violent individual, principles of stoma care, and nursing for gastrointestinal endoscopy, courses in school nursing have been offered only for a short time period. School nurses in Great Britain work amid the latest technology and provide both modern and traditional screening services. As a group they probably have much in common with their counterparts in the United States. PMID- 3845262 TI - Cancer prevention in the schools. AB - About 145,000 people with cancer will die this year who might have been saved by earlier diagnosis and treatment. Many of these deaths could be prevented through smoking cessation programs, reduction of occupational health hazards, and school and community health education programs. To gain insight into the problem, a literature review was conducted to examine the major curricula and instructional materials developed during the past decade. Due to the magnitude of information available concerning the etiology and prevention of cancer, the review was limited to literature with specific relevance to children and adolescents. The review provides information concerning the background of cancer prevention; knowledge and attitudes of adolescents concerning cancer; cancer curricula, programs, and educational materials for adolescents; and a justification for cancer education in schools. Conclusions are drawn, and recommendations for action are offered. PMID- 3845263 TI - The resolution of health problems in school children. AB - The resolution rates of health problems identified in school children by primary care, physical examination, or screenings were examined during a two-year period. The evaluation component of the National School Health Program involved a range of school health services provided in four states to more than 13,000 children. A school nurse practitioner-health aide team worked in collaboration with a community physician consultant to manage the resolution of identified problems. More than 95% of the problems were resolved or in process of resolution at the end of each school year. Resolution patterns were relatively consistent across problem severity levels. Factors contributing to the timely resolutions of health problems by nurse practitioners included their ability to manage and resolve more than 90% of the problems within the school-based practice with physician backup and their access to a medical support network for external referrals. PMID- 3845264 TI - Sex chromosome variations in school-age children. AB - Current evidence suggests that some school-age children are born with a sex chromosome variation. Large chromosome surveys of newborns indicate that 0.5% to 0.6% have chromosome errors, with sex chromosome variations accounting for 35% of them. The four most frequently occurring sex chromosome variations are Turner Syndrome (45,X), Klinefelter Syndrome (47,XXY), Polysomy X or Triple X (47,XXX), and Polysomy Y or XYY (47,XYY). Though many individuals with sex chromosome variations can live functionally normal lives, others may experience developmental, physical, psychological, behavioral, and learning impairments. New information has dispelled myths and biases previously associated with these disorders. By becoming knowledgeable about sex chromosome variations and their effects upon children, school health personnel can assist affected children, their families, and teachers. PMID- 3845265 TI - [An explanation of "Report on the improvement of nursing systems in Japan"]. PMID- 3845266 TI - [Changes of nursing systems in Japanese hospitals]. PMID- 3845267 TI - [Problems of the present state of nursing systems in Japanese hospitals]. PMID- 3845269 TI - [Toranomon Hospital method of patient classification and staffing]. PMID- 3845268 TI - [Comments on "Report on the improvement of nursing systems in Japan" from the perspective of nursing policy]. PMID- 3845270 TI - [The psychosocial approach in geriatric nursing]. PMID- 3845271 TI - [What is women's studies?]. PMID- 3845272 TI - [Expectations of nurse management and methods of self-enlightenment]. PMID- 3845273 TI - [Infusion control of pediatric patients through a case study of an accident (1)]. PMID- 3845274 TI - [Nursing students' practice of outpatient nursing to learn the nurse's role in primary health care (1)]. PMID- 3845275 TI - [Concept of nursing held by student nurses of public health]. PMID- 3845277 TI - [The basis of nursing]. PMID- 3845276 TI - [Meanings and objectives of teaching of fundamental nursing theory]. PMID- 3845278 TI - [Teaching plan and study of basic nursing]. PMID- 3845279 TI - [Instruction on the basis of nursing in combination with lectures and clinical training]. PMID- 3845280 TI - [Experimental study on physical response by keeping the same position. Part I. Approach from the physical and mental state]. PMID- 3845281 TI - [The ability of students to observe in clinical training of nursing]. PMID- 3845283 TI - [Organizing nursing systems]. PMID- 3845282 TI - [Sex differences in human psychology]. PMID- 3845284 TI - [Infusion control of pediatric patients through a case study of an accident (2)]. PMID- 3845285 TI - [Nursing students' practice of outpatient nursing to learn the nurse's role in primary health care (2)]. PMID- 3845286 TI - [Progressive learning of nursing of diabetes mellitus patient]. PMID- 3845287 TI - [Teaching-learning method by use of process record]. PMID- 3845288 TI - [Patients without vocalizing function. Response to the psychological stress caused by loss of the voice]. PMID- 3845289 TI - [Patients without vocalizing function. On assistance of alaryngeal patients from the postoperative period to the time of social rehabilitation]. PMID- 3845290 TI - [Patients without vocalizing function. Process leading to the acquisition of a new voice]. PMID- 3845291 TI - [Nursing process: nursing of patients with lung cancer. Physiopathology of lung cancer and life activities and prognosis of the patients]. PMID- 3845292 TI - [Nursing process: nursing of patients with lung cancer. Diagnostic process]. PMID- 3845293 TI - [Nursing process: nursing of patients with lung cancer. Keypoints in comprehending the overall clinical state of the patient]. PMID- 3845294 TI - [Nursing process: nursing of patients with lung cancer. A nursing plan for a patient with lung cancer]. PMID- 3845295 TI - [Nursing process: nursing of patients with lung cancer. Nursing of an aged patient with complicated lung cancer]. PMID- 3845296 TI - [Clinical application of basic nursing. Mealtime assistance of patients with deglutition disorders]. PMID- 3845297 TI - [Nursing process: nursing of patients with lung cancer. Discussion: validity in patients' capacity for comprehension]. PMID- 3845298 TI - [Effective communication. Interactions with patients with difficulty in communication: an experience in nursing of a patient with scleroderma]. PMID- 3845299 TI - [Effective methods of communication. Psychological support for adolescent girls- establishment of communication with the aid of note exchange]. PMID- 3845301 TI - [Emergency nursing: the initial care and nursing at admission]. PMID- 3845300 TI - [Conference: lessons in clinical training. Management of a terminal cancer patient with a complex personal background]. PMID- 3845302 TI - [Test yourself. Nursing keypoints: nursing of a schizophrenic patient]. PMID- 3845303 TI - [Case report. Pre-operative guidance of a 5-year-old child at the third hospital admission following repeated postponements of surgery--nursing of a child with a ventricular septal defect]. PMID- 3845304 TI - [Patients without vocalization function. The process leading to the acceptance of laryngectomy: with special reference to the interactions at the class for laryngectomy patients]. PMID- 3845306 TI - Organ transplantation. PMID- 3845305 TI - Practical issues in obtaining organs for transplantation. PMID- 3845307 TI - Anne Gilmore testifies on cost containment. PMID- 3845308 TI - The challenge of chronicity. A view from the other side. PMID- 3845309 TI - Age related variations of some polymorphonuclear leukocyte functions. AB - The age-related alterations of some biochemical processes in polymorphonuclear leukocytes (PMNL) obtained from 20 healthy aged male and 20 healthy aged female (age: 60-94 years) subjects were investigated. The basic level of luminol dependent chemiluminescence (LDCL) was increased, whereas the basal value of reduced/oxidized glutathione (GSH per GS-SG) was decreased in the aged groups. The enhancement of LDCL was more significant by PMNLs of aged males than of females. The change of both GSH and GS-SG levels during phagocytosis were diminished in the PMNLs of aged subjects. The L-alanine beta-naphthylamide specific elastase like protease (ELP) activity measured in living cell suspension was markedly increased with aging in male subjects. Therefore, it was concluded that the aging of PMNLs is partly a sex related process. The intensive release of both beta-glucuronidase (beta-G) and ELP by the PMNLs of aged subjects after in vitro treatment with calcium ionophore A23187, Cytochalasin B or low density lipoprotein (LDL) suggests that they could play an important role in some age related disorders. PMID- 3845310 TI - Formal and informal support systems for mothers with newborn. PMID- 3845311 TI - When your patients ask about skin problems in infancy. PMID- 3845312 TI - Monitoring diabetic control in the '80s. PMID- 3845314 TI - The challenge of asthma. PMID- 3845315 TI - Perceived quality of life: problems in the assessment of health and social functioning. PMID- 3845313 TI - When your patients ask about new operations and old habits. PMID- 3845317 TI - Effects of nursing models on the development of the midwifery curriculum. PMID- 3845316 TI - Responsibilities of midwives & medical staff. Findings from a national survey. PMID- 3845318 TI - "Women and the health service". Report of an ad-hoc Working Group of the Women's National Commission. PMID- 3845319 TI - Nursing economics 1985. PMID- 3845320 TI - Judith Ryan shares thoughts with Missouri nurses. PMID- 3845321 TI - Deficiency of the complement regulatory protein, "decay-accelerating factor," on membranes of granulocytes, monocytes, and platelets in paroxysmal nocturnal hemoglobinuria. AB - Erythrocytes from patients with paroxysmal nocturnal hemoglobinuria are deficient in decay-accelerating factor, a membrane protein that inhibits the complement C3 convertases. We studied the expression of this protein on leukocytes and platelets from four patients with paroxysmal nocturnal hemoglobinuria, using cytofluorographic analysis and antibody to decay-accelerating factor. The granulocytes and monocytes had a bimodal distribution of fluorescence, indicating antigen-deficient and antigen-positive subpopulations of cells. In contrast, granulocytes and monocytes from normal donors and patients with other diseases had no antigen-deficient cells. Platelets from the four patients with paroxysmal nocturnal hemoglobinuria had less fluorescence than normal platelets. Furthermore, surface-radiolabeled granulocytes and platelets from one of the four patients, which were maximally deficient in decay-accelerating factor, also lacked antigen that was immunoprecipitable by specific antibody to this protein. Thus, paroxysmal nocturnal hemoglobinuria is a clonal disorder characterized by deficient membrane expression of decay-accelerating factor on granulocytes, monocytes, and platelets, as well as on erythrocytes. PMID- 3845322 TI - Hydrogen bonding and biological specificity analysed by protein engineering. AB - The role of complementary hydrogen bonding as a determinant of biological specificity has been examined by protein engineering of the tyrosyl-tRNA synthetase. Deletion of a side chain between enzyme and substrate to leave an unpaired, uncharged hydrogen-bond donor or acceptor weakens binding energy by only 0.5-1.5 kcal mol-1. But the presence of an unpaired and charged donor or acceptor weakens binding by a further approximately 3 kcal mol-1. PMID- 3845323 TI - The federal budget process. PMID- 3845324 TI - Retirement benefits: can you live with them? PMID- 3845325 TI - Taking charge of change. PMID- 3845326 TI - Building innovative nursing departments: thriving in turbulent times. PMID- 3845327 TI - "Do you swear to tell the truth"? PMID- 3845328 TI - Use nursing medical knowledge for alternative careers. PMID- 3845329 TI - Borrower beware! PMID- 3845330 TI - First aid for meetings. PMID- 3845331 TI - Select a center to fit your needs. PMID- 3845332 TI - The lecture circuit: broadening professional prospective. PMID- 3845333 TI - Management screening in an assessment center. PMID- 3845334 TI - Energize with laughter. PMID- 3845335 TI - Rayner recommends limited subsidised meals range. PMID- 3845336 TI - Formby and Southport GM rethinks nursing imput. CNO stays, thanks to RCN. PMID- 3845337 TI - Royal College of Nursing. CNO is crucial. PMID- 3845339 TI - Reflections on 25 years experience of geriatric nursing. PMID- 3845338 TI - Mental handicap nursing beast is beginning to waken at national level. PMID- 3845340 TI - Draft code should cover all records. PMID- 3845341 TI - Minister urges RHAs to ensure that DHAs must enlist nurses' interest in UGM posts. PMID- 3845343 TI - Royal College of Nursing. Effective lobby. PMID- 3845342 TI - Management in the community. PMID- 3845344 TI - General management in Scottish health service. PMID- 3845345 TI - Impetus and resources for nurse planners. PMID- 3845346 TI - As concern grows over Griffiths Council calls for unity at all levels. PMID- 3845348 TI - Serious effects of child abuse. PMID- 3845347 TI - College fears for new AIDS measures. PMID- 3845349 TI - Vital role of school nurses in assisting and treating the abused school child. PMID- 3845350 TI - Royal College of Nursing. A crucial link. Joint forces. PMID- 3845351 TI - Generation fighting for justice now. PMID- 3845352 TI - Standardised policy needed on health criteria for training. PMID- 3845353 TI - Draft proposals for new College structure. PMID- 3845354 TI - New research on mental handicap nursing reveals urgent need for increased in service training. PMID- 3845355 TI - Royal College of Nursing. Future strategy. PMID- 3845356 TI - Evidence that we are losing control of cervical cancer in England and Wales. PMID- 3845357 TI - Getting registered and staying registered. PMID- 3845358 TI - 'Don't squeeze the nurses': College plea on pay. PMID- 3845359 TI - British nurses set to face new crisis. PMID- 3845360 TI - Research: Academic exercise or professional necessity? PMID- 3845361 TI - Mental handicap nursing education and service--are they on parallel tracks? PMID- 3845362 TI - Royal College of Nursing: in focus. PMID- 3845364 TI - Principal criterion of safety should apply equally to carers. PMID- 3845363 TI - Contracting out--spare us the dogma. PMID- 3845366 TI - Forging the links. PMID- 3845367 TI - Changes to mental health services. PMID- 3845365 TI - Committed to hospital and community care. PMID- 3845369 TI - Report of a two-day conference on 'Models of Nursing'. An all purpose model is not the answer. PMID- 3845368 TI - Opposition Leader addresses RRB. Kinnock's pay pledge to Congress. PMID- 3845370 TI - Society of OH Nursing's Joint Conference with Society of Occupational Medicine. Fitness to work. PMID- 3845371 TI - Royal College of Nursing: finer points--responsive. PMID- 3845372 TI - Are we serving the public to their expectation? PMID- 3845373 TI - Now have a scholarly and well-researched piece of work that shows the way ahead. PMID- 3845374 TI - NITA interviews: Charles C. Boone. PMID- 3845375 TI - NITA interviews: Sharon Coggin. PMID- 3845376 TI - NITA interviews: Randy Jones. PMID- 3845377 TI - Making the NITA standards work for you. PMID- 3845378 TI - History and organization of the Seattle-area Hickman Catheter Committee. PMID- 3845379 TI - Volumes of implantable vascular access devices and heparin flush requirements. PMID- 3845381 TI - The multi-lumen subclavian catheter. A new answer to an old problem. PMID- 3845380 TI - Prevalent Nosocomial pathogens. Part 1. PMID- 3845382 TI - Home antibiotic therapy: a less-than-ideal candidate. PMID- 3845383 TI - Management: tools of persuasion. PMID- 3845384 TI - Research in practice: the time has come. PMID- 3845385 TI - Where will the money go? Economic forecasting and nursing's future. PMID- 3845386 TI - Nurse internship program reduces turnover, raises commitment. PMID- 3845387 TI - Clinical career pathway: the Mount Sinai experience. PMID- 3845388 TI - Teaching the art of holistic nursing care. PMID- 3845389 TI - Self-care today--in search of an identity. PMID- 3845390 TI - Learning styles: basis for creative teaching and learning. PMID- 3845392 TI - Women's health: developing a course for open enrollment. PMID- 3845391 TI - Using classroom questions appropriately. PMID- 3845393 TI - Work-study elective courses. PMID- 3845394 TI - The PhD in nursing program: a five-year projection. PMID- 3845395 TI - Combination antibiotic for resistant bacterial strains. PMID- 3845396 TI - [Professional competence]. PMID- 3845397 TI - [What do we know of postpartum depression?]. PMID- 3845398 TI - [Chemotherapy. Point of view of the patient and application of nursing care]. PMID- 3845400 TI - [Medications and pill-mania in patients]. PMID- 3845399 TI - [Patient education ... one step to take]. PMID- 3845401 TI - [Osteoporosis, a disease of the third age will now be easier to detect]. PMID- 3845402 TI - [The demands of our profession ... a service to render and changing areas of activity]. PMID- 3845403 TI - Marketing the emergency department. PMID- 3845404 TI - Law for the nurse manager. In vitro fertilization. PMID- 3845405 TI - Selling a positive image builds demand. PMID- 3845406 TI - Patient and health education: lessons from the marketplace. PMID- 3845407 TI - Job satisfaction: the assertiveness factor. PMID- 3845408 TI - "Brightly burning" nurses revisited. PMID- 3845409 TI - Auditing the hospital nursing market. PMID- 3845410 TI - Nursing images: the TV news picture. PMID- 3845412 TI - Art & science of management. Storm clouds on the horizon. PMID- 3845411 TI - Whole-brain management: Part II. PMID- 3845413 TI - Packaging the professional for success. PMID- 3845414 TI - Effects of chemicals on health--3. Toxicological testing. PMID- 3845415 TI - Asbestos--a scapegoat? PMID- 3845416 TI - Interdisciplinary cooperation in OH. PMID- 3845417 TI - Keynote for the future. PMID- 3845418 TI - Effects of chemicals on health--4. Atmospheric monitoring methods. PMID- 3845419 TI - Legal scope of practice for the occupational health nurse practitioner. PMID- 3845420 TI - Large changes in blood pressure discovered in an industrial screening program. PMID- 3845421 TI - Female career development. PMID- 3845422 TI - The occupational health nurse consultant in Alberta, Canada. PMID- 3845423 TI - Recognizing early senility. PMID- 3845424 TI - Graduate education in occupational health nursing. PMID- 3845425 TI - Health of the school aged child. PMID- 3845426 TI - Application of MCH standards. PMID- 3845427 TI - [Project Moosham in nursing schools--a program for drug abuse prevention]. PMID- 3845428 TI - [Pediatric nursing today]. PMID- 3845429 TI - [Austrian nursing personnel in Saudi Arabia]. PMID- 3845430 TI - [Hazards for young adults on the job--exemplified by student nurses]. PMID- 3845431 TI - [Holistic care--realized in clinical education]. PMID- 3845433 TI - [How one can adapt to stress]. PMID- 3845432 TI - [Consolation for cancer patients]. PMID- 3845434 TI - [The hospital from the patient's viewpoint. Various aspects of the status of hospital patients from the sociopsychological viewpoint]. PMID- 3845435 TI - [How can the individual assist the United Nations in the promotion of human rights? 1]. PMID- 3845436 TI - [The cry from the culture tube]. PMID- 3845437 TI - [How one can adapt to stress]. PMID- 3845439 TI - Double bind: a dilemma for parents of chronically ill children. PMID- 3845438 TI - Assessing the child with short stature. PMID- 3845441 TI - PKU: a mother's perspective. PMID- 3845440 TI - Improving adherence to pediatric therapeutic regimens. PMID- 3845442 TI - Identifying gifted preschoolers. PMID- 3845443 TI - Caring for hospitalized inner-city children. PMID- 3845444 TI - Various salt forms: what are the differences? PMID- 3845445 TI - Pediatric management problem (colic). PMID- 3845447 TI - Legislative update. Nurse-midwifery. PMID- 3845446 TI - Practical approaches to clinical research. PMID- 3845448 TI - Sleep problems of older infants and preschool children. PMID- 3845450 TI - Stress during childhood: long-lasting effects? PMID- 3845451 TI - How to prepare an abstract. PMID- 3845449 TI - Psychosocial care of the child cured of cancer. PMID- 3845452 TI - Professional labeling: the authors respond. PMID- 3845453 TI - Nurses and doctors as healers. PMID- 3845454 TI - Feminism and nursing. AB - Feminism provides a personal, philosophic and political means for analyzing the realities of women's lives as lived in patriarchal systems. It is not a single line of thought; multiple approaches have been developed that provide diverse avenues for confronting systematic injustices while learning to value ourselves as women. Jo Ann Ashley, recognizing that new realities must emerge from within nursing rather than from other groups, states: "For many years we have heard that nursing is at the crossroads. Nursing never seems to get over being at a crossroads. Indeed, nursing has been at a crossroads many times, but instead of taking a new road, leaders in the profession always choose to continue bearing the burden of continuing to live out the subservient role under the patriarchal system, rather than taking a new road that can lead beyond patriarchy. Nursing is no longer at a crossroads. It is at a turning point. It needs to turn away from being the "token torturer" of itself and other women. It needs to turn toward the health awaiting women in a woman-defined, woman-created world that lies beyond patriarchal ideas and institutions." Movement in this direction requires becoming familiar with feminist literature and the insights that women scholars have provided. In nursing, a feminist perspective requires an uncompromising questioning of the forces that divide us from one another, the ethics of our actions, and our co-optation into the unhealthy environment of the current health care system. PMID- 3845455 TI - Science and politics. The background and the issues surrounding the controversial proposal for a National Institute of Nursing. PMID- 3845456 TI - Faculty practice: something for everyone. PMID- 3845457 TI - Sabbaticals: not for teachers only! PMID- 3845458 TI - Why nursing education needs curriculum specialists. PMID- 3845459 TI - Putting the process into practice. PMID- 3845460 TI - Incontinence in the elderly. Part six. PMID- 3845461 TI - We'll just freshen you up, dear ... . PMID- 3845462 TI - A lifetime of questioning. PMID- 3845463 TI - Book tax. Goodbye to all VAT? PMID- 3845464 TI - Communication. Turning in to patients' needs. PMID- 3845465 TI - Skills behind the scenes. PMID- 3845466 TI - Accidents in hospital. Learning from past mishaps. PMID- 3845468 TI - How not to do research. PMID- 3845467 TI - Accidents in hospital. 'Why did it happen in my ward'? PMID- 3845470 TI - Education. Learner's choice. PMID- 3845469 TI - Models and theories. Seven. Henderson's model. PMID- 3845471 TI - Computer watch on accidents. PMID- 3845472 TI - Happiness is an old blanket. PMID- 3845473 TI - Don't waste the process. PMID- 3845474 TI - A baby with Hirschsprung's disease. PMID- 3845475 TI - Hospital to home. Divide and rule? PMID- 3845477 TI - Savings on a plate? PMID- 3845476 TI - Backchat. Human knowledge v. human life. PMID- 3845478 TI - Screening: whose job is it, anyway? PMID- 3845479 TI - General manager: rare breed. Interview by Laurence Dopson. PMID- 3845480 TI - Healthy debate. PMID- 3845482 TI - Care about food. PMID- 3845481 TI - When the team doesn't work. PMID- 3845483 TI - Care about food. A guide to quiet revolution. PMID- 3845484 TI - Care about food. What you thought about food. PMID- 3845485 TI - Care about food. The state of the nation. PMID- 3845486 TI - Is hospital food foul? PMID- 3845487 TI - Systems of Life no 123. Setting up the systems-23. Congenital malformations of the heart. PMID- 3845488 TI - Budgeting for beginners. Money matters. PMID- 3845489 TI - Recording children at risk. PMID- 3845491 TI - More than a lick of paint. PMID- 3845490 TI - Life without teddy. PMID- 3845492 TI - Dishonouring the code. PMID- 3845493 TI - Special payments. Are nurses paid too much? PMID- 3845495 TI - Small is beautiful. PMID- 3845494 TI - Old people's homes. Who's in charge? PMID- 3845496 TI - Care about food. Pick a plateful. PMID- 3845497 TI - Care about food. Campaign for real food. PMID- 3845498 TI - Care about food. Healthy choices. PMID- 3845499 TI - Mental health nursing. Aggression: can we manage. PMID- 3845500 TI - Mental health nursing. Safe and secure. PMID- 3845501 TI - Mental health nursing. New horizons. PMID- 3845502 TI - Mental health nursing. Taking liberties by law? PMID- 3845503 TI - Policy-makers under scrutiny. Interview by Charlotte Kratz. PMID- 3845504 TI - Education. Guiding light for tomorrow's nurses. PMID- 3845505 TI - Limited list. Beyond the limits? PMID- 3845506 TI - Commons sense. For once, a united front. PMID- 3845507 TI - Child health. Card carriers. PMID- 3845509 TI - Left-sided empyema. PMID- 3845508 TI - Child health. Timmy goes to hospital. PMID- 3845510 TI - Care about food. Differing needs. PMID- 3845511 TI - This sweet sickness. PMID- 3845512 TI - Management. A useful pair of hands? PMID- 3845513 TI - Clinical. Listening to mother. PMID- 3845514 TI - Computers in nursing news. PMID- 3845516 TI - Computers in nursing. Spreading the word. PMID- 3845515 TI - Computers in nursing. From generation to generation. PMID- 3845518 TI - A bitter pill. PMID- 3845517 TI - Computers in nursing. Mastering a computer. PMID- 3845519 TI - Nurse practitioners. Out in the cold. PMID- 3845520 TI - Gillick. Taking precautions. PMID- 3845522 TI - Fraud--sickness or crime? PMID- 3845521 TI - Backbenchers breeding discontent. PMID- 3845523 TI - From hospital to home. The information exchange. PMID- 3845524 TI - From hospital to home. 'The yellow one is my water pill'. PMID- 3845525 TI - From hospital to home. A communication breakdown. PMID- 3845526 TI - Moving wards--how do student nurses cope? PMID- 3845528 TI - Theatre nursing. Work-share in the theatre. PMID- 3845527 TI - Theatre nursing. The road to recovery--nursing after neurosurgery. PMID- 3845529 TI - Prejudice in the NHS. Discriminate? Not us! PMID- 3845530 TI - Cause for complaint. Eight. Suicide--who's to blame? PMID- 3845531 TI - Congenital toxoplasmosis. PMID- 3845532 TI - Drinkers respond to the CAT. PMID- 3845533 TI - Backchat. Preparing for battle. PMID- 3845535 TI - New pathways in nursing education. PMID- 3845534 TI - Expanding role of nurses and nursing education. PMID- 3845536 TI - Objectives and activities of SNA. PMID- 3845537 TI - Needs of students, patients and community. PMID- 3845538 TI - Avoiding gossip on the bus. PMID- 3845539 TI - Hyperactive children. 1. In perpetual motion. PMID- 3845540 TI - Community issues. 5. Into the poverty trap. PMID- 3845541 TI - Making contact. PMID- 3845542 TI - Management: confronting conflict. PMID- 3845544 TI - Bowing to progress. PMID- 3845543 TI - Be prepared! PMID- 3845545 TI - Education. Are you trying to tell me something? PMID- 3845546 TI - Intensive care nursing. 2. Epidural anaesthesia. PMID- 3845548 TI - Deciphering the code of conduct. PMID- 3845547 TI - Caring at all levels. PMID- 3845549 TI - The public face of cancer. PMID- 3845550 TI - Down you way. A tale of two cities. PMID- 3845551 TI - Infection control--lip service is not enough. PMID- 3845552 TI - Midwifery. Changing the system. PMID- 3845553 TI - Nutrition. 5. Feeding for therapy. PMID- 3845555 TI - Management. Incidents and accidents. PMID- 3845554 TI - Hyperactive children. 2. Food--the unknown enemy. PMID- 3845556 TI - Intensive care nursing. 3. The Scandinavian approach. PMID- 3845557 TI - New hot drinks therapy? PMID- 3845558 TI - Community care is not a cheap option. PMID- 3845559 TI - Taking off the pressure. PMID- 3845560 TI - A shared role. PMID- 3845561 TI - Innovations in A & E. PMID- 3845562 TI - Measuring recovery. PMID- 3845563 TI - Griffiths column. Changing roles and hybrid jobs. PMID- 3845565 TI - Lonely in a world full of people. PMID- 3845564 TI - Research. Parent participation. PMID- 3845566 TI - Education. Choosing a system. PMID- 3845567 TI - I want to go home. PMID- 3845568 TI - Intensive care nursing. 5. ICU views. PMID- 3845569 TI - Midwifery. Lessons from Colombia. PMID- 3845571 TI - Playing the waiting game. PMID- 3845570 TI - Challenge of the future. PMID- 3845572 TI - Nursing Mirror mental handicap. PMID- 3845573 TI - Citizen advocacy. PMID- 3845574 TI - A network for life. PMID- 3845575 TI - Changed but not diminished. PMID- 3845577 TI - Intensive care nursing. 6. Intravenous therapy. PMID- 3845576 TI - Barring accidents. PMID- 3845578 TI - Teaching versus patient care. PMID- 3845579 TI - Group therapy. PMID- 3845580 TI - Private thoughts on the NHS. PMID- 3845581 TI - Sexist encounters of the work kind. PMID- 3845583 TI - The nurse practitioner. 1. Setting the scene. PMID- 3845582 TI - Mole investigates NHS hygiene. PMID- 3845584 TI - Down your way. Over hill, over dale. PMID- 3845585 TI - Midwifery. Vulnerability of a new mother. PMID- 3845586 TI - Renal nursing: at the end stage. PMID- 3845587 TI - Renal nursing. Vascular access techniques. PMID- 3845588 TI - The Nursing Mirror project grants: progressing well. PMID- 3845589 TI - Community respiratory health workers. PMID- 3845590 TI - Questionnaire. Stress survey. PMID- 3845591 TI - Management. A cut above. Interview by Cate Campbell. PMID- 3845592 TI - Education. Dreams and reality. PMID- 3845593 TI - In defence of general managers. PMID- 3845594 TI - The why and how of volunteerism. PMID- 3845595 TI - What do nurses do? PMID- 3845596 TI - Factors affecting the sexuality of patients with head and neck cancer. PMID- 3845597 TI - Building the knowledge base for practice, Part II: alopecia, breast self-exam and other human responses. PMID- 3845598 TI - A report from the First National Invitational Conference: the oncology clinical nurse specialist role analysis and future projections. PMID- 3845600 TI - The oncology clinical nurse specialist: an expert coach. PMID- 3845601 TI - Oncology clinical nurse specialist education. PMID- 3845599 TI - Practice issues for the oncology clinical nurse specialist. PMID- 3845602 TI - Administrative support issues and the oncology clinical nurse specialist. PMID- 3845603 TI - The predicted effect of recent health care trends on the role of the oncology clinical nursing specialist. PMID- 3845604 TI - Clinical nurse specialist role evaluation. PMID- 3845606 TI - Preventing extravasation during administration of antineoplastic drugs. PMID- 3845605 TI - Birth control considerations during chemotherapy. PMID- 3845608 TI - Selecting an instrument to measure spiritual distress. PMID- 3845607 TI - Combining Ativan and Decadron for CMF patients. PMID- 3845609 TI - 1984 ONS Research Committee survey of membership's research interests and involvement. PMID- 3845610 TI - Differences in community health nursing and home health nursing. PMID- 3845611 TI - Licensed practical nurses. Entry into nursing practice. PMID- 3845613 TI - "Missing" progress notes: nurses' "whiteouts" x-rayed. PMID- 3845612 TI - Entry to practice review. PMID- 3845614 TI - "Dreadful nursing care": $3 million damages awarded. Case in point: Herman v. Milwaukee Children's Hosp. (361 N.W. 2d 297 - WI). PMID- 3845615 TI - $7.5 million award: failure to monitor patient. Case in point: Hippocrates Mertsaris v. 73rd Corp. (482 N.Y.S. 2d 792 - NY). PMID- 3845616 TI - Rehabilitation of patients with chronic obstructive pulmonary disease. PMID- 3845617 TI - The impact of certification on specialty practice. PMID- 3845618 TI - Certification in rehabilitation nursing. PMID- 3845619 TI - Rehabilitation assessment--a nursing perspective. PMID- 3845621 TI - [The ureters. (I). Anatomic observations]. PMID- 3845622 TI - [Defibrillation]. PMID- 3845620 TI - A nursing role in an outpatient clinic group. PMID- 3845623 TI - [Unfolding of an operation for a mandibular fracture. Role of the operating room nurse]. PMID- 3845624 TI - [A case report of mandibular fracture]. PMID- 3845625 TI - [The nurse faced with cleansing wound using pulsated lactic acid]. PMID- 3845626 TI - [Operating room nurse supervisor and construction of operating rooms. Utopia or reality?]. PMID- 3845627 TI - [Examination of the patient with maxillofacial trauma]. PMID- 3845628 TI - [Clinical forms of mandibular fractures]. PMID- 3845629 TI - [Testimony of a hospitalized "bio-psycho-social being" or "to be fooled"]. PMID- 3845630 TI - [Treatment of mandibular fractures]. PMID- 3845631 TI - [Pain and personality]. PMID- 3845633 TI - [Cancer of the pancreas]. PMID- 3845632 TI - [Abdominal emergencies in infants]. PMID- 3845634 TI - [Continuing professional education]. PMID- 3845635 TI - [The treatment of sterility due to anovulation]. PMID- 3845637 TI - [What should one think of traditional medicine?. Interview by T. Berche and C. Lepetit]. PMID- 3845636 TI - [Intermittent peritoneal dialysis and continuous ambulatory peritoneal dialysis]. PMID- 3845638 TI - [Irrigation, a leakproof technic]. PMID- 3845639 TI - [When the larks get involved]. PMID- 3845640 TI - [Kahler's disease]. PMID- 3845641 TI - [Information systems to learn more about the work of caregivers]. PMID- 3845642 TI - [On the borders of Thailand]. PMID- 3845643 TI - [Help! The thermometer]. PMID- 3845644 TI - [Help! Geriatric education]. PMID- 3845645 TI - [Feet on the ground and head in the clouds]. PMID- 3845646 TI - [Death is also life]. PMID- 3845647 TI - [Postoperative monitoring of various surgical interventions for kidney lithiasis]. PMID- 3845648 TI - [Extraction of urinary calculi]. PMID- 3845649 TI - [The professional responsibility of the nurse]. PMID- 3845650 TI - [Parkinson disease]. PMID- 3845651 TI - [Tumors of the small intestine]. PMID- 3845652 TI - [Mucoviscidosis]. PMID- 3845653 TI - [Elodie... and life]. PMID- 3845654 TI - [Current status of hemorrhoids treatment]. PMID- 3845657 TI - [You said (GUSD) General University Studies Diploma?]. PMID- 3845656 TI - [A dictionary of nursing care terminology, a true necessity...why?]. PMID- 3845655 TI - [Renal puncture biopsy by the percutaneous approach (RPB)]. PMID- 3845658 TI - [Tomorrow's contraception]. PMID- 3845659 TI - [Arterial hypertension of the elderly patient]. PMID- 3845660 TI - [Hemorrhagic rectocolitis]. PMID- 3845661 TI - [An operating room block, USA style]. PMID- 3845663 TI - [Allergic asthma]. PMID- 3845662 TI - [Help! In the year 2010]. PMID- 3845664 TI - [Progressive home care]. PMID- 3845665 TI - [Cancer of the larynx]. PMID- 3845666 TI - [Medicines: antineoplastic chemotherapy]. PMID- 3845667 TI - [Treatment of hemophilia]. PMID- 3845668 TI - [Hemophilia, landmarks for the caregiver]. PMID- 3845669 TI - ["Both my sons are hemophiliacs"]. PMID- 3845670 TI - [Saccoradiculography]. PMID- 3845672 TI - [Computers and operating room nursing: a perspective]. PMID- 3845671 TI - [Recognizing an intestinal occlusion]. PMID- 3845673 TI - [An operating room schedule: a utilization plan]. PMID- 3845674 TI - [Scheduling for and utilization of the operating room]. PMID- 3845675 TI - [Laser, a ray for life]. PMID- 3845676 TI - [Drugs: abuse and effects]. PMID- 3845677 TI - [Drug therapy in overdose and withdrawal syndrome in heroin addicts]. PMID- 3845678 TI - [Malignant lymphomas]. PMID- 3845679 TI - [Diet in digestive system diseases (I)]. PMID- 3845680 TI - [Expert Group of Nursing in primary health care]. PMID- 3845681 TI - [Conceptual model of nursing]. PMID- 3845682 TI - [Sex education for health: general observations]. PMID- 3845683 TI - [Prevalence of caries in a school community]. PMID- 3845684 TI - [Exposure to noise in industry and methods of control]. PMID- 3845685 TI - [Cardiac insufficiency]. PMID- 3845686 TI - Did he say it was OK to use his first name? PMID- 3845687 TI - Plug in to your own career network. PMID- 3845688 TI - Fringe benefits. More than just icing on the cake. PMID- 3845689 TI - What the comatose patient can tell you. PMID- 3845691 TI - Emergency! Dealing with drug abusers. PMID- 3845690 TI - How to get into hard-to-stick veins. PMID- 3845692 TI - "We're the world's highest-paid babysitters". PMID- 3845693 TI - After the ostomy: helping the patient reclaim his sexuality. PMID- 3845694 TI - Problem ingredients in OTCs. PMID- 3845695 TI - Go on record with nothing but the truth. PMID- 3845696 TI - Making a low-cholesterol diet easy to swallow. PMID- 3845698 TI - Battered women: how nurses can help the victims. PMID- 3845697 TI - Family violence: a perspective for health care professionals. PMID- 3845699 TI - Grange inquiry: suspicion leaves its scars. PMID- 3845700 TI - Take an M.D. to coffee. PMID- 3845701 TI - Nurses' research roles. PMID- 3845703 TI - New Ontario premier voices nursing concerns. PMID- 3845702 TI - Wellness weekend. One of the many faces of nursing. A special project by a nurse practitioner. PMID- 3845704 TI - Developing standards of care for SCI nursing. PMID- 3845705 TI - A nurse is on the witness stand. PMID- 3845706 TI - [Nursing care: care of bedsores]. PMID- 3845707 TI - [Iodosorb]. PMID- 3845708 TI - [Adoptive parents]. PMID- 3845709 TI - [New families]. PMID- 3845710 TI - [Parents "at risk"]. PMID- 3845711 TI - [Maternal guilt]. PMID- 3845712 TI - [Do healthy parents exist?]. PMID- 3845713 TI - [Fathers. Quarrel between the old and the new or perpetuity of the quarrel]. PMID- 3845714 TI - [Parents faced with day care centers]. PMID- 3845715 TI - [Parents faced with hospitals]. PMID- 3845716 TI - [The nursing profession today and tomorrow]. PMID- 3845717 TI - [Departmentalization]. PMID- 3845718 TI - [Status of nurses in the government administration]. PMID- 3845719 TI - [Exercising the nursing profession]. PMID- 3845720 TI - [Parents faced with school problems in healthy or sick children]. PMID- 3845722 TI - [How to evaluate diseases of the mitral valve]. PMID- 3845721 TI - [Risordan]. PMID- 3845723 TI - [Mitral stenosis. Clinical and paraclinical aspects]. PMID- 3845724 TI - [Mitral insufficiency. Clinical and paraclinical aspects]. PMID- 3845725 TI - [The normal mitral apparatus]. PMID- 3845726 TI - [Prognosis and evolution of mitral cardiopathies]. PMID- 3845727 TI - [Anatomopathology, etiology and physiopathology of diseases of the mitral valve]. PMID- 3845728 TI - [Duphaston]. PMID- 3845729 TI - [The status of children in the world in 1984. A revolution to the advantage of children]. PMID- 3845730 TI - [Upper genital infections]. PMID- 3845731 TI - [Treatment and prevention of acute upper genital infections]. PMID- 3845732 TI - [Celioscopy and upper genital infections]. PMID- 3845733 TI - [Complications of upper genital infections]. PMID- 3845734 TI - [Chronic upper genital infections]. PMID- 3845735 TI - [A case report of upper genital infection]. PMID- 3845736 TI - [Mechanisms of infections in gynecology]. PMID- 3845737 TI - [Infant dietetics. Psychological aspects]. PMID- 3845738 TI - [Bacteriology of genital infections and specimen collection]. PMID- 3845739 TI - [Lower genital infections: vulvovaginitis]. PMID- 3845741 TI - Entry level: Texas following a different drummer? PMID- 3845740 TI - TNA Blue Ribbon Committee on Education Report: environmental assessment on health care. Part III. PMID- 3845742 TI - Reactions of an ADN educator. Entry into practice. PMID- 3845743 TI - Do warmed skin cleansers affect patient heat loss? PMID- 3845744 TI - Assessing patients in the holding area. PMID- 3845745 TI - OR managers must counsel effectively. PMID- 3845746 TI - Aseptic surgery in a bubble prevents postop infections. PMID- 3845748 TI - "No-fault" malpractice--will it happen? PMID- 3845747 TI - A balancing act for the Contravis Microscope. PMID- 3845749 TI - A different vantage point. PMID- 3845750 TI - Hope for cancer patients: thoracotomy and partial pneumonectomy. PMID- 3845751 TI - Theatre nurses. 2. The way forward. PMID- 3845752 TI - The Irish Nurses Organisation & National Council of Nurses of Ireland. Address by President: building on reality in 1984. PMID- 3845753 TI - H.O.P.E. in Alberta. PMID- 3845754 TI - Registered nursing assistants administering medications. PMID- 3845755 TI - Research rounds. Interview by June Kikuchi and Eve Henderson. PMID- 3845756 TI - As you graduate ... on caring. PMID- 3845757 TI - Nursing at Henwood Rehabilitation Center. PMID- 3845759 TI - Information regarding financial assistance available to nurses for post basic education. PMID- 3845758 TI - Effects of the expanded head nurse manager role at Foothills Hospital. PMID- 3845760 TI - Nurse practitioner/physician team model development at the Boyle McCauley Health Centre. An attempt at problem solving. PMID- 3845761 TI - Focus on nursing resources in the health sciences library. PMID- 3845762 TI - Instructions and guide for patients with wired jaw. PMID- 3845763 TI - Defective complement activity in chronic lymphocytic leukemia. AB - Patients with chronic lymphocytic leukemia (CLL) are at an increased risk for infections with bacteria which require complement for osponization. We explored the possibility that patients with CLL have a defect in binding the potent opsonin C3b to bacteria. Bacteria selected for these experiments included Streptococcus pneumoniae type 3, which binds C3 by activating the classical complement pathway (CCP), type 25, which can bind normal amounts of C3b by the alternative complement pathway (ACP), type 14, which can activate both the CCP and ACP, and Staphylococcus aureus and Escherichia coli, both of which activate the CCP. Bacteria were treated with normal serum or serum from 15 patients with CLL, and the bound C3b was quantified spectrophotofluorometrically. Despite normal serum concentrations of C3, C4, Factor B, C-reactive protein, and total hemolytic complement activity, all 15 CLL sera bound reduced amounts of C3b to at least one bacterial species; 9 to S pneumoniae type 3, 8 to types 14 and 25, 11 to S aureus, and 13 to E coli. Mixing normal serum with CLL serum restored C3b binding to all bacteria, suggesting a deficiency rather than an inhibitor of activity. Serum from ten hypogammaglobulinemic CLL patients bound less C3b (62.7 +/- 5% of normal) (means +/- SEM) than those with normal immunoglobulin levels (81.9 +/- 5%) (p less than .005). Nevertheless, the addition of specific antibacterial antibodies to CLL serum did not enhance C3b binding to any of the bacteria. Serum from patients with a history of a bacterial infection bound less C3b (62.3 +/- 5%) than those without a history of infections (76.1 +/- 6%) (p less than .05). Thus, there is a defect in either the activation or activity of C3 in CLL serum which may contribute to the increased incidence of infections in these patients. PMID- 3845764 TI - Preferring our own providers. PMID- 3845765 TI - How do you handle heat loss? PMID- 3845766 TI - Vietnam nurse veterans. PMID- 3845767 TI - Reporting elder abuse: it's the law. PMID- 3845768 TI - Champions of choice. PMID- 3845769 TI - Getting through the maze of infant formulas. PMID- 3845770 TI - When the baby isn't 'perfect'. PMID- 3845771 TI - The impact of chronic grief. PMID- 3845772 TI - Short form for short stay. PMID- 3845773 TI - Does your job work for you? PMID- 3845774 TI - Rheumatoid arthritis and the pregnant woman. PMID- 3845775 TI - Wound care forum. An unusual alternative. PMID- 3845776 TI - Setting standards for home IV therapy. PMID- 3845777 TI - New York City: a nurse metropolis. PMID- 3845778 TI - Diagnostics: Actual, potential, or possible? PMID- 3845779 TI - Students who made a difference. PMID- 3845780 TI - Not by any other name. PMID- 3845782 TI - Human rights guidelines for nurses in clinical and other research. PMID- 3845781 TI - Standards of nursing practice in correctional facilities. PMID- 3845783 TI - The nature and scope of ANA's economic and general welfare program. PMID- 3845784 TI - The grievance procedure. PMID- 3845785 TI - Alcohol, drug abuse among RNs discussed at national conference. PMID- 3845786 TI - Senate Committee approves spending freeze. PMID- 3845788 TI - 'Tell public about organ donations,' says Council. PMID- 3845787 TI - 300 attend second symposium on faculty practice. PMID- 3845789 TI - ANA Board prepares for historic meeting of delegates. PMID- 3845790 TI - As I see it... SHMOs offer prepaid care and services to elderly. PMID- 3845791 TI - Quality prenatal care is campaign goal. PMID- 3845792 TI - In vitro activity of Sch 34343 against enterococci and other gram-positive bacteria. AB - The in vitro activity of Sch 34343, a new penem antibiotic, was compared with those of imipenem, vancomycin, and eight other antibiotics against gram-positive bacteria. Ninety percent of methicillin-susceptible Staphylococcus aureus and penicillin-susceptible streptococcal isolates were inhibited by Sch 34343 at concentrations of less than or equal to 0.125 micrograms/ml. Listeria monocytogenes isolates were susceptible to the penem at concentrations of less than or equal to 0.25 micrograms/ml. Penicillin-resistant pneumococci and viridans streptococci were relatively resistant to Sch 34343 (MIC for 90% of the isolates, 4 micrograms/ml), as were methicillin-resistant strains of S. aureus (MIC for 90% of the isolates, greater than or equal to 256 micrograms/ml). All 48 strains of Streptococcus faecalis were inhibited by concentrations of less than or equal to 8 micrograms of the drug per ml. Combinations of Sch 34343 with gentamicin demonstrated bactericidal synergism against 5 of 10 enterococcal strains tested in broth media and against 6 of 10 strains tested in 50% pooled human serum. The serum protein binding of Sch 34343 was ca. 65%. The antibacterial activity of Sch 34343 remained stable after 24 h of incubation at 37 degrees C in water or Dextrose-Phosphate broth. However, 63% of bioassayable activity was lost after 24 h of incubation at 37 degrees C in 50% human serum buffered with HEPES (N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid) (pH 7.4). PMID- 3845793 TI - Antimicrobial therapy of experimental meningitis caused by Streptococcus pneumoniae strains with different susceptibilities to penicillin. AB - The pharmacokinetics and bacteriological efficacies of penicillin G, ceftriaxone, vancomycin, and imipenem were determined in rabbits with experimental meningitis caused by Streptococcus pneumoniae strains with different penicillin susceptibilities. Drug dosages were adjusted to attain peak concentrations in serum that were similar to those observed in infants and children. In animals infected with a penicillin-susceptible (MBC, 0.008 micrograms/ml) pneumococcus, penicillin G and ceftriaxone reduced the number of organisms in cerebrospinal fluid (CSF) by greater than or equal to 4.14 log10 CFU/ml after single doses and after 9-h continuous infusions. A single large dose (50 mg/kg) of penicillin G was comparatively ineffective (-2.15 log10 CFU/ml) against a relatively penicillin-resistant (MBC, 0.5 micrograms/ml) strain, whereas ceftriaxone therapy resulted in a 3.66- and 4.77-log10 CFU/ml reduction after single doses and 9-h continuous infusions, respectively. In animals in which meningitis was caused by a penicillin-resistant (MBC, 8.0 micrograms/ml) pneumococcus, a single dose of penicillin (50 or 150 mg/kg) or of ceftriaxone failed to lower the number of organisms in CSF. Vancomycin and imipenem reduced the counts in CSF by at least 2.19 and 4.10 log10 CFU/ml after single doses and 9-h infusions, respectively. In all experiments, a bactericidal titer of greater than or equal to 1:8 in CSF was necessary to achieve a maximal bacteriological effect. PMID- 3845794 TI - Nurses belong at the table of the ethics committee. PMID- 3845795 TI - AORN credentialing vs NCB certification: who to call for what. PMID- 3845796 TI - A physician's perspective on allaying patients' fears. PMID- 3845797 TI - Preparing the OR budget. The nurse manager's responsibility. PMID- 3845798 TI - An OR patient acuity system. Variable billing for surgical services. PMID- 3845799 TI - Efficient OR scheduling. A study to decrease cancellations. AB - We plan to use a computer to compile and analyze the data we collect. This will make it possible for us to see ongoing trends of decreased cancellations, increased use of the OR, and problem areas that need correction. Our goal of maximizing the delivery of quality surgical care in a cost-effective manner has been aided by our study. By maintaining a high-use ratio of the facilities and staff and reducing costly cancellations, we are able to maximize funds appropriated to us. The VMAC is funded by the federal government; thus, the need for cost effectiveness is important. The quality of care has been enhanced by reducing physical discomfort of our patients who may have had to endure more than one preoperative preparation and psychological implications of repeated cancellations to the patient and his or her family. PMID- 3845800 TI - OR cost survey. Results of a nationwide study. PMID- 3845801 TI - The clinical nurse specialist. The role in the OR. PMID- 3845803 TI - Infractions in aseptic technique. A research study. PMID- 3845802 TI - Anesthetic gas exposure. Protecting the OR environment. AB - A trace gas study was conducted at The University of Michigan Hospitals to assess levels of anesthetic gas in the OR environment. Samples were collected at various sites associated with anesthesia equipment in 18 operating rooms and three treatment rooms where general anesthesia was used routinely. Waste anesthetic gas levels were found to vary widely and, depending upon anesthesiologists' work practices and equipment design, significant personnel exposures were documented. Although standard turbulent air flow, nonrecirculating systems are used in most ORs, areas of high gas concentration were identified. Such locations included the area between the gas machine and adjacent wall, and along the perimeter of the patient drapes. Gas concentrations were influenced by such variables as the distance from the anesthesia equipment to the exhaust grilles, and personnel movement. Anesthetizing techniques and work practices are the major contributors to waste anesthesia levels in the OR environment. PMID- 3845804 TI - Recommended practices. Cleaning and processing anesthesia equipment. AORN Recommended Practices Subcommittee. PMID- 3845805 TI - Recommended practices. Electrosurgery. AORN Recommended Practices Subcommittee. PMID- 3845806 TI - Documenting nursing during local procedures. PMID- 3845807 TI - Assessing the quality of nursing care in a dialysis unit. PMID- 3845808 TI - End stage renal disease patient teaching record. PMID- 3845809 TI - The application of Orem's conceptual framework to enhance self-care in a dialysis program. PMID- 3845811 TI - Role of the nephrology nurse: past, present, and future. PMID- 3845810 TI - European Dialysis and Transplant Nurses Association. PMID- 3845812 TI - Professional advancement: theory development through practice and research. PMID- 3845813 TI - Critical evaluation of nephrology nursing research. PMID- 3845814 TI - Nephrology nursing consult: case study. Mr. B.: a man with end stage renal disease. PMID- 3845815 TI - Looking ahead at nursing. PMID- 3845816 TI - A study of dose-response relationships for asbestos associated disease. AB - The risk of an asbestos worker developing small irregular opacities on the chest radiograph is related to cumulative exposure to asbestos dust, latency, and smoking habit. In this study the use of residence-time weighted exposure as a "dose metric" was explored in a cohort of asbestos cement workers. It was found that this parameter, which incorporates both exposure concentration and latency, is useful for modelling the risk of small opacities and might also be useful for modelling the risk of mesothelioma. PMID- 3845817 TI - [Single-chain, low molecular weight kininogen in the blood plasma of rabbits: isolation and fragmentation by porcine pancreatic kallikrein]. AB - A highly purified preparation of low molecular weight kininogen (LMrK) was isolated from the plasminogen-free rabbit blood plasma, using chromatography on DEAE-Sepharose CL-6B, gel filtration on Ultrogel AcA 34 and Sephadex G-100 as well as gradient chromatography on a hydroxylapatite column. The yield of the 320 fold purified LMrK was 16%. Trypsin released 13-14 micrograms-eq. of bradykinin (BK) from 1 mg of LMrK or 0.85-0,95 mol of BK per mol of kininogen. Rabbit LMrK consists of one polypeptide chain of Mr 69 000 and pI 4.63. Porcine pancreatic kallikrein splits off kinin from the LMrK polypeptide chain by disrupting two peptide bonds resulting in the formation of S-S-bound two chain molecule. After reduction of the S-S bonds by dithioerithritol the latter is separated into a heavy (Mr 61 000) and light (Mr 6 800) chains. A biologically active peptide was isolated from the products of CNBr cleavage of LMrK. This peptide consists of Lys BK elongated from the C-terminal with several amino acid residues. Rabbit LMrK closely resembles human LMrK in terms of Mr, pI and location of the kinin fragment in the protein molecule. PMID- 3845818 TI - Phagocytic activity in mouse embryonic liver and spleen following hemolysis. AB - Phenylhydrazine (PHZ) was injected into pregnant mice and the number of phagocytizing cells was counted in the embryonic livers and spleens at 11th to 14th gestational days. A marked increase in the number of phagocytizing cells was observed in the embryonic spleen, whereas in the embryonic liver it was only slightly enhanced. This observation indicates that the response to hemolytic events is similar in embryonic and adult mammals. PMID- 3845819 TI - Proliferation kinetics of bone marrow cells in congenital dyserythropoietic anemia type II. AB - The proliferation kinetics of erythropoiesis and of myelopoiesis have been studied in a case of congenital dyserythropoietic anemia type II (HEMPAS) by means of quantitative 14-C autoradiography, Feulgen cytophotometry and 59-Fe ferrokinetics. Increased total erythropoietic activity and ineffective erythropoiesis was demonstrated by ferrokinetics. Quantitative 14-C autoradiography showed a generally delayed proliferation rate of erythroid cells, most evident in the polychromatic compartment. A deficiency of cell production of 25% was detected among the polychromatic erythroblasts. Part of this fraction is represented by cells still capable of passing to the successive stages of maturation. We conclude that only part of the deficiency of cell production in the polychromatic compartment represents real cell destruction. Most of the measured ineffectiveness is confined to later stages of maturation, such as orthochromatic erythroblasts and marrow reticulocytes. PMID- 3845820 TI - Are aggregates of IgG the effective part of high-dose immunoglobulin therapy in adult idiopathic thrombocytopenic purpura (ITP)? PMID- 3845821 TI - Computer comfortable. PMID- 3845822 TI - Computer pioneering--the past is prologue. PMID- 3845823 TI - A decade of decisions. Four perspectives of computerization in nursing practice. PMID- 3845824 TI - Decision: humanism. PMID- 3845825 TI - Decision: professionalism. PMID- 3845826 TI - Decision: education. PMID- 3845828 TI - An expert system for nursing practice. Clinical decision support. PMID- 3845827 TI - Decision: evaluation. PMID- 3845829 TI - Computer technology and nursing. A futuristic view. PMID- 3845830 TI - Vanadium exposure enhances lipid peroxidation in the kidney of rats and mice. AB - Vanadium (V) as sodium orthovanadate induces an increase in lipid peroxidation in the kidneys after a single subcutaneous or intraperitoneal injection to rats or mice. The rate of malondialdehyde (MDA) formation, an index of lipid peroxidation, by kidney homogenates increased by more than 100% 1 h after injection. Chronic exposure of rats to vanadium sulfate, initially through maternal milk and later in the drinking water, resulted after 10 weeks in a significant increase in MDA formation by kidney but not by other tissues. In both acute and chronic studies in rats and mice, no significant increase in lipid peroxidation by V treatment was detected in brain, heart, lung, spleen, or liver. In mice, administration of ascorbate prior to acute exposure to V diminished both toxicity, i.e., respiratory depression and limb paralysis, and the formation of MDA in kidney. PMID- 3845831 TI - A travel diary through Germany. PMID- 3845832 TI - Vienna--psychiatry in a 'cultured' city. PMID- 3845834 TI - People to People tour--an experience of a lifetime! PMID- 3845833 TI - Sweden's Karolinski Institute. PMID- 3845835 TI - Impressions of Soviet mental health care delivery. PMID- 3845836 TI - Your and the law. Liability for a fall. PMID- 3845837 TI - Baccalaureate for entry to practice: a challenge that universities must meet. PMID- 3845838 TI - Winds of change: a university responds to the needs of nurses in the community. PMID- 3845839 TI - RN to BN: building on education and experience. PMID- 3845840 TI - Coming back: BC's graduate nurse refresher program. PMID- 3845841 TI - The family nursing unit: clinical preparation at the master's level. PMID- 3845842 TI - Taking the campus to the student. PMID- 3845844 TI - The development of a post-basic certificate program--for credits! PMID- 3845843 TI - What are the needs of the mature RN student? PMID- 3845845 TI - The flip side of the fitness coin. PMID- 3845846 TI - Recognizing the symptoms of autonomic dysreflexia. PMID- 3845847 TI - Environmental hypersensitivity: living in a hostile world. PMID- 3845848 TI - Inhibition of growth and spontaneous metastasis of syngeneic transplantable tumors by an aromatic retinoic acid analogue. 1. Relationship between tumour immunogenicity and responsiveness. AB - Aromatic retinoic acid analogues selected for their favourable therapeutic ratios were tested for their effects on the growth (in vivo and in vitro) and spontaneous metastasis of a variety of murine sarcomas and carcinomas. Ro 10-1670 (a trimethylmethoxyphenyl analogue of retinoic acid) was used in in vitro studies, while its corresponding ethyl ester Ro 10-9359 was used for oral administration. Four of six fibrosarcomas, one of three squamous cell carcinomas, and one of five mammary adenocarcinomas responded to retinoid treatment in vivo by reduced growth rates (first detectable after 8-10 days), and in some cases by complete regression. The magnitude of the response was directly proportional to tumour immunogenicity, and eight tumours which failed to respond to retinoids did not evoke detectable transplantation immunity in syngeneic recipients. Retinoid administration did not significantly inhibit the development of spontaneous metastasis of non-immunogenic tumours, but decreased the incidence of secondary disease in the case of tumours of moderate immunogenicity. In vitro, retinoid treatments were generally without significant effects on tumour cell growth rate or morphology, and where growth inhibition was obtained it did not correlate with in vivo tumour responsiveness. No evidence of increased differentiation of retinoid-treated tumours was obtained either in vitro or in vivo. Taken together, the data suggest that in the 14 transplantable syngeneic tumours studied the inhibitory effects of retinoids on tumour growth and metastasis in vivo were mediated indirectly by potentiation of cell-mediated immunity directed against antigenic determinants on the tumour cell surface. PMID- 3845851 TI - Chemical dependency: nursing faculty and students are not immune. PMID- 3845849 TI - Development of hyporesponsiveness of natural killer cells to augmentation of activity after multiple treatments with biological response modifiers. AB - Four biological response modifiers (BRMs), MVE-2 (maleic anhydride divinyl ether), Corynebacterium parvum (C. Parvum), PolyICLC (polyinosinic:polycytidylic acid stabilized with poly-L-lysine), and mouse alpha beta-interferon (alpha beta IFN), were tested to assess whether repeated treatments would repeatedly induce or sustain augmented levels of natural killer (NK) cell activity and/or macrophage (M0)-mediated inhibition of tumor cell growth. In contrast to a significant increase in splenic NK activity obtained with a single treatment with each of the agents, multiple treatments with these BRMs led to a progressive decrease in the degree of augmentation of NK activity. In contrast, multiple injections with these agents resulted in sustained augmentation of M0-mediated reactivity. Separation of the spleen cells by Percoll discontinuous density gradient centrifugation indicated that with mice treated once with each BRM high levels of NK activity were detected in the lower density fractions and that these fractions contained a higher percentage of large granular lymphocytes (LGLs) than that found in comparable fractions from normal mice. In contrast, cells in the lower density fractions from mice that received multiple treatments had decreased NK activity and an appreciably lower proportion of LGLs. These results indicate that the development of hyporesponsiveness to augmentation of splenic NK-cell activity following multiple treatments with BRMs may be attributable to a decreased percentage of LGLs, the effector cell population responsible for NK cell-mediated cytotoxicity. PMID- 3845852 TI - Magnetic resonance imaging of the normal female pelvis. AB - 9 healthy volunteers were examined by magnetic resonance imaging in order to describe the anatomy of the normal female genital tract as seen by this technique. The visualization of the bony and pelvic skeleton and the muscles surrounding these structures is excellent. Due to high contrast resolution relatively small structures like the femoral blood vessels can be positively identified. Imaging of the small bowel is disappointing. Visualization of the rectum and sigmoid colon is relatively good. In the uterine wall three distinct layers can be identified. An interpretation of the origin of these layers based on comparison with macroscopic and microscopic examination of sections of uterine tissue is given. Further research is needed to demonstrate possible cyclic changes in the appearance of the uterus. The ovaries could not be identified with certainty. PMID- 3845850 TI - Antitumor effect induced by a hot water extract of Chlorella vulgaris (CE): resistance to Meth-A tumor growth mediated by CE-induced polymorphonuclear leukocytes. AB - When a hot water extract of Chlorella vulgaris (CE) was injected into the peritoneal cavity of BALB/c mice inoculated with syngeneic Meth-A tumor cells, the survival times were strikingly prolonged. Furthermore, peritoneal exudate cells (PEC) rich in polymorphonuclear cells (PMN) obtained from normal mice 24 h after CE injection exhibited an antitumor effect in a Winn-type assay using normal recipients. Such an activity of PEC remained almost intact after T cell or macrophage depletion. However, such PEC did not express an antitumor effect in a Winn-type assay using irradiated recipients. It was suggested that CE-induced PEC, presumably PMN, expressed an antitumor effect in cooperation with a host- or recipient-derived element(s) sensitive to irradiation. The antitumor mechanism of CE may be different from that of OK-432, one of the biological response modifiers. PMID- 3845853 TI - Roentgendensitometric study of the phalanx. AB - This is an outline of a radiologic assessment of bone mineral measurements for diagnosis that is simple and low in cost. Bone mineral content equivalent values (BMCE) were determined of phalanges. Since phalanges have different dimensions the BMCE values per square millimeter surface area, bone mean mineral equivalent values (BMME) were determined. In normal subjects it was shown that over a period of 9 months a coefficient of variation for BMCE and BMME was found of 8 and 9%, respectively, indicating a change during the investigation period (precision of the technique has a CV for BMCE of 4% and for BMME of 3%). The clinical application of microdensitometry and of the single photon absorption method was tested and compared. Both methods resulted in similar findings, microdensitometry however also provides a qualitative assessment of bone characteristics. PMID- 3845854 TI - A radiographic method for measurement of leg length inequality. AB - An accurate and simple radiographic method for the measurement of weight-bearing leg length inequality with a minimum of radiated body area is described. The measurement can be made in a conventional chest X-ray unit without other extra equipment than a gonad shield described here. PMID- 3845855 TI - Fibromuscular dysplasia as a cause of acute infantile hemiplegia. AB - A case of acute infantile hemiplegia, probably in co-occurrence with intracranial fibromuscular dysplasia, is reported. A review of the literature is given and some remarks are made concerning the management of this disease. PMID- 3845856 TI - Transient gas-filled appendix developing during excretory urography. AB - Gas-filled appendix is well recognized in association with appendicitis, and in acute abdominal conditions associated with bowel distension. 3 patients who developed gas-filled appendix in the course of excretory urography are reported. The phenomenom is thought to result from the reported property of ionic contrast materials to produce anticholinesterase activity and histamine release, either or both of which could produce increased bowel tone and consequent displacement of cecal gas into the appendix. PMID- 3845857 TI - Critical health problems in school-aged youth--Part II. PMID- 3845859 TI - "The living will: a discussion with the lawmaker". PMID- 3845860 TI - Mastectomy. Contour confidence. PMID- 3845858 TI - Lifeline: how can someone who is alone and unable to call for help, call for help? PMID- 3845861 TI - Piles. PMID- 3845862 TI - Child growth. Catching them early. PMID- 3845863 TI - Child growth. Measuring up. PMID- 3845864 TI - Child growth. Marc's story. PMID- 3845865 TI - Nutrition for the elderly. Healthy appetites. PMID- 3845866 TI - Matters for concern. Health education is our business. PMID- 3845867 TI - Pediatric care plan for adult ICU nurses. PMID- 3845868 TI - The electrocardiographic diagnosis of posterior myocardial infarction. PMID- 3845869 TI - Caring for a patient with a chest tube connected to the Emerson pump. PMID- 3845870 TI - Hypothermia: implications for the critical care nurse. PMID- 3845871 TI - Continuous measurement of SVO2. Clinical applications and advantages for critical care nursing. PMID- 3845872 TI - Quality assurance in critical care. PMID- 3845873 TI - Your mystery arrhythmia strips. PMID- 3845874 TI - Concepts relevant for critical care nursing: the knowledge-practice connection. PMID- 3845875 TI - Nutritional assessment and management of the hospitalized patient. PMID- 3845876 TI - Ethical considerations in critical care nursing. PMID- 3845877 TI - Inocor (amrinone lactate). PMID- 3845878 TI - Nursing care plan for the child with status asthmaticus. PMID- 3845879 TI - The value of preventive medicine. PMID- 3845880 TI - Multiple risk factor intervention in coronary heart disease. AB - Intervention studies have shown that the primary prevention of coronary heart disease (CHD), or at least its postponement, is possible in a large proportion of individuals. In the Diet-Antismoking Trial of the Oslo Study, it was concluded that in healthy middle-aged men at high risk of CHD (serum cholesterol, 7.5-9.8 mmol/l, and 80% were smokers), the incidence of myocardial infarction and sudden coronary death was reduced by 47% in the intervention group compared to the controls. This study did not have the power to single out the separate effect of cessation of smoking on the incidence of CHD. A significant positive effect of antihypertensive treatment on cerebrovascular events has been shown in many studies, but unfortunately no significant preventive effect on the first event of CHD has been demonstrated. In the Oslo Study a significant positive correlation was found between total serum cholesterol concentration and blood pressure. It is suggested that both risk factors might be treatable or preventable to some extent by the same measures. In health education, both the population mass strategy for prevention and the high risk strategy for individual intervention are important. The frequent coexistence of two or more risk factors should be kept in mind. For CHD prevention, non-pharmacological intervention seems at the moment to be the safest and very often probably the most effective approach. PMID- 3845881 TI - Control of tobacco-related disease. AB - As ways of discouraging tobacco consumption, the effects of increases in price and in quantitative information may have been under-emphasized. To decrease the hazards of tobacco, switches from cigarettes to pipes, cigars or 'smokeless' tobacco may be useful, as may a reduction in cigarette tar delivery. Indeed, the spread of existing tar level reductions from capitalist to socialist countries might prevent tens of thousands of lung cancer deaths each year in the early decades of the next century, and (perhaps by attempts to engineer cigarettes so that smokers of lower tar cigarettes are less likely to 'compensate' by taking more smoke) it should eventually also be possible to change cigarettes so as also to reduce their effects on heart and lung disease. Changes in consumption and in composition of tobacco products are complementary, not competing, strategies. If both are pursued effectively, then although the life expectancy of old people may not be much improved, the proportion of adults who die before reaching old age will decrease substantially. PMID- 3845882 TI - The value of physical fitness in preventive medicine. AB - Physical conditioning induces many favourable changes in the body, including an increase of maximum oxygen transport, a decrease of body fat, a strengthening of muscles, tendons and bones, an improvement of blood lipid profile, and a better balance between oxygen demand and supply in the myocardium. The preventive value of such changes is often seen in measures of perceived health or their practical consequences. Industrial fitness programmes apparently reduce the use of medical services (physician visits and hospital days), with gains of productivity, a lessening of absenteeism, and a lower employee turnover. Techniques such as the Canadian Health Hazard Appraisal questionnaire suggest a general reduction in 'risk-taking' behaviour among exercise-class participants, with a substantial reduction in their 'appraised' age. There is little evidence that regular moderate exercise can alter the response to acute disease, but both theoretical considerations and epidemiological data suggest the value of physical activity in preventing manifestations of ischaemic heart disease, obesity and maturity onset diabetes, cholecystitis, hypertension, certain neuroses, and age-related pathologies. A fit individual is also at a lesser risk of industrial injury, and is capable of living independently for a longer fraction of his or her old age. It is concluded that physical activity is one of the more useful tactics of preventive medicine; the current challenge to both research workers and policy makers is to carry this message beyond the white-collar executive to such target groups as blue-collar workers, ethnic minorities, housewives, the elderly and the handicapped. PMID- 3845883 TI - Will disease prevention spare the medical commons? AB - Everywhere the disparity grows between what modern medicine can achieve, on the one hand, and what society can afford, on the other. In industrialized nations health resource allocation questions now focus primarily on diagnostic, therapeutic and rehabilitative medical programmes. With increases both in our capabilities in preventive medicine and in public awareness of those capabilities, soon that realm is likely to be demanding more resources from the health budget. These considerations and others make urgent the development of better methods for setting priorities for the allocation of health resources. A common thread in the consideration of competing programmes will be issues of trade-offs. Beneficial programmes that save more health resources than they consume are much to be desired, but resource saving should not be regarded as a necessary condition for giving high priority to a programme. Cost-effectiveness ratios provide one approach to measuring the ability of competing programmes to use health-care resources to produce health benefits. Application of cost effectiveness principles suggests that prevention programmes merit a greater share of resources, even though such programmes generally consume more health resources than they save. For the process of priority-setting to be equitable and rational, more and better data will be required on programmatic costs and benefits. Furthermore, the process should be flexible, allowing priorities to differ from one geographic area to another, and from time to time within the same area. Finally, the process must be understood by a majority of the population, and perceived as fair. PMID- 3845884 TI - Preventive medicine: the objectives. AB - The objectives of preventive medicine are to prolong life and to reduce disability. Improvements in the standard of living and in medical treatment and specific measures to reduce the incidence of disease have greatly reduced mortality over the last century. The distribution of deaths by age has altered dramatically and, at current rates, the great majority of deaths will occur at 80 85 years of age. Improvement has continued to the present and is still not slackening. It seems unlikely that many deaths can be postponed much beyond 100 years, but a realistic objective would be to raise the median age of death to about 90 years. This would require a substantial reduction in mortality from three groups of diseases that are now the main cause of life lost under 85 years of age: neoplasms, ischaemic heart disease, and other vascular disease. Watch will also need to be kept on diseases that threaten to become more common, so that we can abort new epidemics. Whether a reduction in age-specific mortality rates will also bring a reduction in the prevalence of disability at each age is unclear. Some believe that it will, so that if we concentrate on reducing age specific mortality, everyone will eventually survive to such an age that failure of homeostasis will bring about a sudden collapse. Others suspect that postponing death will lead to a greater prevalence of pre-terminal disability, due to the prevalence of diseases that are largely independent of or even inversely related to mortality. The objectives of preventive medicine are realizable only in so far as they are perceived to be desirable by society. The perception of what is desirable depends not only on objective quantification, but also on a variety of subjective assessments. Preventive medicine must, therefore, allow for the factors that produce these assessments and educate the public to give them appropriate weight. PMID- 3845885 TI - A monitoring system for patient classification in critical care. PMID- 3845886 TI - Cultural grief expressions following infant death. PMID- 3845887 TI - Effects of cardiopulmonary bypass on coagulation. PMID- 3845888 TI - Obesity complications in critical care. PMID- 3845889 TI - Purification of glandular kallikrein in maxillary mucosa from humans suffering from chronic inflammation. AB - Glandular kallikrein was purified from human maxillary mucosa with chronic inflammation and its biochemical properties were characterized. The purification procedure consisted of extraction with 3 mol/l KCl, saturation of ammonium sulfate (66%), DEAE-Sepharose, arginine-Sepharose and Sephadex G-150 chromatographies. Maxillary mucosa with chronic inflammation contains considerable activity of glandular kallikrein, which is a serine protease with limited proteolytic activity and its biochemical properties resemble those of pancreatic kallikrein. PMID- 3845890 TI - A new class of inhibitors of human leucocyte elastase. AB - Studies of the inhibition of elastases at a molecular level have resulted in the identification of protected dipeptides which are reversible and highly specific inhibitors of human leucocyte elastase (HLE). These have been further developed by increasing their hydrophilicity and potency to give a new family of elastase inhibitors, typically N alpha-(1-adamantanesulphonyl)-N epsilon-(4 carboxybenzoyl)-L-lysyl-L-alanyl-L-valinal. These compounds are active in pharmacological models designed to detect compounds of potential therapeutic value in the treatment of emphysema. PMID- 3845891 TI - [Pregnancy and nutrition]. AB - Based on the active role of the placenta fetal nutrient supply is to a large degree independent on the nutrition of the mother. The fetus must be considered as a parasite within the maternal organism and only with extreme reduction in nutritional intake by the mother will an effect on fetal growth become apparent. Mild chronic forms of inadequate food intake may lead to depletion of maternal reserves, in particular of minerals and vitamins, and as a consequence of the extra demands during pregnancy supply of maternal tissues may be short. Special high risk groups for inadequate nutrition during pregnancy are defined and intense counseling of these mothers must be part of prenatal care. An increased intake of food with high nutritional value, i.e. a high content in minerals and vitamins relative to the caloric content, should be the basis of good nutrition in pregnancy. This will satisfy extra demands of these substances without increasing caloric intake. PMID- 3845893 TI - [Fetal monitoring sub partu in West Germany. I. Basic data]. AB - An inquiry was circulated among all Departments of Gynaecology and Obstetrics in West Germany and West-Berlin with regard to their procedure to effect foetal intensive-care management and monitoring, obstetrical management, and the results obtained. 58% of these Departments responded. With an average number of 55 beds, the annual birth rate is 628. A mean of 191 births are covered by one CTG unit, the scatter being 110-290 births per year and per unit (10th and 90th percentile). The mean incidence of Caesarean section is 11%, the mean incidence of forceps delivery 3.6%, and the mean incidence of extraction by suction 8.0%. An estimated 95% of all births are monitored via cardiotocography. 25% of all Departments use other monitoring methods as well, microanalysis of blood gas after Saling being by far the most prominent one (94%). Transcutaneous foetal pO2 measurement has been adopted by 8 centres only. 74% of the Departments are using CTG units recording beat-to-beat with a chart speed of 1 cm per minute (82.2%). Few (18%) Departments employ intrauterine pressure measurement for recording labour pains. Telemetry is used by 27.7% of the Departments. In most cases (72.9%) the cardiotocograms are jointly assessed by the physician and the midwife. From the obstetrician's point of view it would be desirable to achieve greater technical perfection of external monitoring methods, as well as further miniaturisation and computerisation of the CTG equipment. PMID- 3845892 TI - [Travel, sports and pregnancy]. AB - This article is an attempt to review and to discuss critically the pros and cons of physical stress to which a pregnant woman is subjected by sports activities or by travel. The review is based on theoretical considerations as communicated in the article as well as on facts derived from casual observations or systematic studies. Besides the subjective feeling of well-being of the pregnant woman associated with sports activities, objective data favour the preservation or enhancement of fitness by training during pregnancy; other factors in favour of physical load, and the capacity to sustain such load, are the positive reports on the course of pregnancy, on birth, and on the influence exercised on the child by the sports activities of the pregnant mother, the often-quoted experiences collected during sports activities of competitive sportswomen who are pregnant, and the behaviour of pregnant animals. Risks consist in an increased danger of traumatization of mother and foetus resulting from certain types of sports requiring maintenance of balance or sudden changes of movement. Hyperthermia should be avoided, for example, excessively long-lasting sauna baths, or physical activity associated with high stress, such as marathon running, because thermoregulation is hampered during pregnancy in such a way that blood flow of the uterus is affected; besides, there is also the risk of teratogenic effects during the early stages of pregnancy. Excess physical stress leading to exhaustion of the pregnant woman (in animal experiments, in circulatory collapse) definitely exercises an adverse effect on the foetus.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3845895 TI - [Significance of pregnancy and labor complications for the genesis of brain function disorders. Results of an epidemiologic study of 8-year-old children]. AB - An epidemiological and a clinical study were conducted to examine the importance of pregnancy and delivery complications in the genesis of cerebral dysfunction, the studies comprising a total of 495 children of 8 years of age. In the case definition of cerebral dysfunction, methodic improvements were used that had been demanded by those who had been critical of the clinical procedure. The results showed that clinical dysfunction is a risk factor for diseases in child psychiatry. There were no signs pointing to uniform psychopathological patterns (on the lines of a hyperkinetic syndrome) in children with cerebral dysfunction. There was no enhanced incidence of other diseases in the anamnesis of children with cerebral dysfunction. On the whole, the concept of cerebral dysfunction cannot be upheld at least to the extent presumed so far. A comparison between field study random samples and clinical study random samples showed that the classical postulates of the concept apply at most to a negligible minority only. PMID- 3845894 TI - [Individual birth. Results of a longitudinal study]. AB - This paper goes into the question as to how greatly mother and father desire an individualised kind of delivery, how this wish is realised, and how it is valued many years later. The basic demand was a safe delivery-safe for both mother and child. For the purpose of analysis and study, 170 women were asked to register their opinion before being admitted to the labour ward, on the following points: for example, presence of the partner, free mobility during the first stage of labour, avoidance of analgesics, positioning the baby on the mother's belly, use of the obstetric chair, rooming-in, breast feeding, etc. Changes in the mother's behaviour during birth, as well as the interaction between mother, child and partner were observed. During the puerperium the delivery was critically assessed by the mother, and her ideas regarding delivery at a future time were recorded. It is possible to show that under the conditions of a safe, monitored birth (uncorrected perinatal mortality 1980-1983 0.71%) the individual wishes of the patients can be met. All mothers whose partners had been present during delivery, assessed this fact positively. Likewise, 100% of the mothers whose baby had been positioned on their belly after birth, considered this to be pleasant. 77% of them actively caressed the newborn in this position. 68% of the mothers talked to the child within the first 15 minutes. 86% kept the newborn for more than an hour in their bed. Of the fathers present during delivery, 55% caressed the newborn, and 50% talked to it within the first 15 minutes.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3845896 TI - [Cesarean section with subsequent hysterectomy]. AB - We had 65 Caesarean hysterectomies from 1960-1982 at our hospital. 43 patients were elected for various reasons: contraception 26, fibromatosis 13, intraepithelial neoplasia 4. 22 had vital indications: rupture of the uterus 12, placenta increta/percreta 5, abruptio placentae 3, atony 2. The time we needed for the operation was up to 100 minutes in the elective group, 160 minutes in the non-elective group. In vital indications, postoperative morbidity was higher than when treatment was elective. In the group of vital indication, 4 patients died, whereas no patient died if operation was performed on an elective basis. PMID- 3845897 TI - [Psychological considerations in the wish for refertilization]. AB - 51 women asking for refertilization were evaluated by means of a half standardized questionnaire before laparoscopy. Special attention was directed towards the psychological situation at the time of sterilisation as well as the reasons for refertilization desired. In addition the Giessen-test was performed as standardized psychological personality inventory. In general, the sterilization was initiated by the women because of social, financial or marital difficulties. In 2/3 of the females sterilization was performed in association with other gynecological or obstetrical procedures. Most of the women did not have any kind of adequate psychological or social counseling. The desire for refertilization was mainly caused by changes in the personal situation. 29 of 51 women reported to have a new partner, 27 of them after divorce or separation, two after the previous partner's death. Ten women reported the loss of a child, however, 12 women desired refertilization without any obvious change in their private situation. In conclusion, it appeared that refertilization was desired and experienced as a real need as well as a result of a conflict in the women's self-understanding expressed by a tendency towards depression. PMID- 3845898 TI - [Puerperal complications in HbSC disease--a rare hemoglobinopathy]. AB - This is a report on a case of complications post partum seen in a patient with sickle cell disease (HbS-C-disease) from Ghana. The main signs and symptoms, clinical parameters, and therapeutic management are described. The pathogenesis of sickle cell disease and the agents causing haemolytic crises, are also described, with particular reference to pregnancy and parturition. PMID- 3845899 TI - [Tubal pregnancy after a previous tubal ligation and hysterectomy]. AB - This is a case report on extra-uterine pregnancy occurring several years after hysterectomy. The special aspect of this particular case is that years before hysterectomy the patient had been subjected to sterilization surgery with partial tubal resection. Such cases can be expected more often in future in view of today's liberal indications for hysterectomy and also for tubal sterilization. PMID- 3845900 TI - [Cardiotocography with or without fetal blood analysis]. AB - It is the aim of obstetric medicine to achieve optimum safety for both mother and child with a minimum of surgery. In normal clinical routine, this demand cannot be fully met by the sole use of cardiotocography for monitoring the foetus sub partu. Obviously the weak point of cardiotocographical diagnosis is that often there is no imminent or beginning hypoxia or acidosis of the foetus associated with suspicious or pathological heartbeat patterns. This results in a large number of unnecessary deliveries by Caesarian section, or complicated vaginal surgery. We must draw the conclusion from this that cardiotocography is merely a selective method. It is imperative to apply additionally a biochemical method for properly diagnosing foetal hypoxia or acidosis. The author also comments on accusations made by K. Hammacher in a preceding publication. PMID- 3845901 TI - Alzheimer's disease. Functional assessment of the patient. PMID- 3845902 TI - Alzheimer's disease. How memory fails: a theoretical model. PMID- 3845903 TI - Alzheimer's disease. Milieu therapy. PMID- 3845904 TI - Alzheimer's disease. Studying the family. PMID- 3845905 TI - Alzheimer's disease. Modifying the environment. PMID- 3845906 TI - Keeping food safe to eat. PMID- 3845907 TI - 70+ and going strong. Call me before 10 AM or after midnight. PMID- 3845908 TI - Choriocarcinoma presenting as acute abdomen. PMID- 3845909 TI - Congenital solitary nonparasitic cyst of the liver in an infant. PMID- 3845910 TI - Colitis cystica profunda. PMID- 3845911 TI - Investigating irritable bowel syndrome: a wasteful exercise? PMID- 3845912 TI - Liver span in normal Indians. PMID- 3845913 TI - A study of hepatitis B antigenemia in pregnant females and the risk of transmission to babies. PMID- 3845914 TI - Enzymatic defence against oxygen toxicity in D-galactosamine-induced hepatitis in rats. PMID- 3845916 TI - [The baccalaureate, required for admission to practice. It's up to the universities to take action]. PMID- 3845915 TI - In vitro activity of combinations of antibiotics against Staphylococcus aureus resistant to gentamicin and methicillin. AB - Twenty clinical isolates of Staphylococcus aureus, resistant to both gentamicin and methicillin, were tested in vitro for sensitivity to rifampicin, novobiocin, fusidic acid, vancomycin, teicoplanin and an extended range of aminoglycosides. Rifampicin was the most active compound tested, having an MIC of less than 0.02 mg/l. All the strains were inhibited by 1 mg/l of novobiocin, vancomycin and teicoplanin, and only one strain was resistant to fusidic acid. 50% of the strains were inhibited by less than 1 mg/l of amikacin and netilmicin, but other aminoglycosides were of poor activity. Resistant mutants were selected when strains were grown in the presence of rifampicin, novobiocin or fusidic acid alone, but this did not occur when rifampicin was combined with either novobiocin or vancomycin. Pharmacokinetic and other considerations suggest that a combination of rifampicin and novobiocin deserves further assessment for the treatment of infections caused by this type of organism. PMID- 3845917 TI - [Returning to studies. A new dimension to professional life]. PMID- 3845918 TI - [The winds of change. A university adapts itself to the needs of the nursing community]. PMID- 3845919 TI - [Professional nurses at the university. What are their needs?]. PMID- 3845920 TI - [Professional stress]. PMID- 3845921 TI - [Nurses and the Inuit. Different values]. PMID- 3845922 TI - [Sophrology]. PMID- 3845923 TI - [The prevention of infection in the hospital. 3. Antisepsis]. PMID- 3845924 TI - [Times of mutation]. PMID- 3845925 TI - The problem of environmental Legionella. PMID- 3845926 TI - A rubella outbreak among dental students: description of the outbreak and analysis of control measures. AB - From February to April 1982, rubella was diagnosed in 17 Washington University dental students. The affected students represented 4.8% of all dental students and 21% of susceptible students. Because a high likelihood of rubella transmission was perceived, three adjacent university hospitals undertook an emergency program to ensure immunity to rubella in all personnel. The program reached 84.6% of all target personnel, but only 36% of physicians (p less than 0.001). We estimated that the program increased the level of rubella immunity from 92.2% to 98.1%, at a total cost of $140,274 of which $29,990 was in excess of ordinary expenditures. Our experience indicates that schools training health professionals face the possibility of rubella outbreaks unless they ensure rubella immunity in all students. The experience also supports the value of ongoing programs to ensure rubella immunity in hospital personnel. Without such programs, hospitals may be forced to undertake emergency programs that are likely to be disruptive and expensive and may have relatively little immediate measurable impact. PMID- 3845927 TI - Penicillins with antipseudomonal activity. PMID- 3845928 TI - Prevention and control of tuberculosis. AB - Programs for tuberculosis prevention in health care workers can be complex and often raise questions and controversies among employee health and infection control practitioners alike. Although tuberculosis is declining in incidence in the US, preventive programs for health care workers will continue to be a part of employee health programs. As with other aspects of infection control, the practitioner must develop and modify the program to reflect the state of the art and current thinking in tuberculosis prevention and control. PMID- 3845929 TI - Teaching our Caribbean teachers. AB - Many Caribbean islands now at perplexing crossroads created by new political and governmental identities should consider, among other things, their responsibility to establish and maintain educational standards for the allied health disciplines. This responsibility can be met directly through assuring that there is a self-generating supply of qualified Caribbean teachers. Factors which influence directions for educational programming in the allied health sciences have been analyzed. Advancement of the cause through appropriate choices and worthwhile alliances shall help to generate and maintain those educational health manpower programmes which the region can afford to support. PMID- 3845930 TI - Nurses and health policy. PMID- 3845931 TI - A place for the nurse-midwife. PMID- 3845932 TI - Fifteen years of the ICN/3M Fellowship Programme. PMID- 3845933 TI - International consultation by United States nurses. AB - Two sets of data were used in this exploratory/descriptive study of U.S. nurses who have engaged in international consultation during the past 7 years. The first set consisted of the responses to a 12-page questionnaire which was completed by 93 informants, while the second set consisted of the content analysis of 25 interviews. Findings included a demographic profile of the consultant, information about the client, type of advice given, motivation for engaging in international consultation, and ways in which advice was adapted to make it culturally relevant and effective in its context. PMID- 3845934 TI - Community health workers: promoters or inhibitors of primary health care? PMID- 3845935 TI - Reflections on the cost of hospital nursing: a comparison of factors affecting time distribution in ward, theatre and outpatient departments. AB - An understanding of the influences upon nurses' time distribution is important for the evaluation of care and the justification of the cost of the nursing service. Time devoted to the care of breast cancer patients at different stages of their illness was studied by direct observation in ward, theatre and outpatient departments. Factors affecting the time spent with patients were found to differ in each location. In the ward and theatre, nurses' work was primarily patient-orientated in that the most significant determinants of the amount of nurse-patient contact appeared to be characteristics of the patients themselves. Particularly in the ward, nurses seemed free to make their own decisions concerning the patients who most needed their attention. In outpatient departments, organizational factors and the characteristics of the doctors conducting the clinics seemed most significant in determining nurses' time distribution. However, there were signs that nurses recognize differences between patients to which their current pattern of work organization does not allow adequate response. PMID- 3845936 TI - A theoretical approach to nursing assessment. AB - Nurses use theory to sharpen their observations and to facilitate their understanding of the human responses to which they direct their interventions. An assessment tool, derived from the nursing theory 'modelling and role-modelling', was developed by nurses at the University of Michigan Hospitals. This tool appears to elicit the data necessary to assess and diagnose the health status of clients. This article describes the assessment tool, why it was developed, the objectives in utilization of the tool and suggestions for implementation. PMID- 3845937 TI - The Neuman Systems Model in nursing education: course development and implementation. AB - Nursing education programmes increasingly are integrating nursing models into their curriculum. The model chosen can provide a guide for curriculum content as well as strategies for learning content. In the clinical setting a model can facilitate the student's nursing practice by assisting in the organization of observations and interpretation of data. This paper describes the introduction of the Betty Neuman Systems Model to fourth year baccalaureate students at the University of Ottawa School of Nursing, Canada. The selection of this model for a senior nursing course reflects its congruency with the school's philosophy of learning and nursing and the purpose of the course. Course development and implementation, teaching strategies and outcomes are discussed and reflect an attempt at incorporating a nursing model into course design. PMID- 3845938 TI - Use of controlling language in the rehabilitation of the elderly. AB - Discussion rests on the notion that a paradox exists in the techniques used by nurses during the rehabilitation of elderly patients; and that this can be identified in the language nurses use during interactions with their patients. This language is seen as essentially controlling and as such contributing to a sense of helpless dependence rather than confident independence conducive to patients' successful rehabilitation. Social and physical antecedents to this are identified and the pertinence of issues of power and control in the lives of the elderly discussed. Supporting evidence is drawn from studies of nurse-patient verbal interaction. An attempt is made to identify and emphasize the subtle nature of 'controlling language'. Research questions are identified and the future contribution of research highlighted. PMID- 3845939 TI - Review and replications of a 'core-course' in behaviour therapy for psychiatric nurses. AB - The advent of the nursing process and the success of behaviour therapy in psychiatry have created a need for a revised emphasis on nursing practice and education. This paper outlines an in-service, 'core-course' in behaviour therapy which addresses this need. The results from an initial and very comprehensive evaluation of the course are presented in terms of the attitudes, knowledge and skills of 65 nurses. We then give a summary of seven subsequent replications of the course in different British National Health Service psychiatric hospitals. These involved nurses in the organization and running of the core-course, and, together with the very favourable results, they illustrate one strategy for developing nurses' proficiency in behaviour therapy. PMID- 3845940 TI - The attitudes of nurse tutor students towards behavioural objectives: background and method of study. AB - Since behavioural objectives are rooted in behaviouristic psychology there is a brief discussion of some notable behaviourists. This is followed by reference to some key characters in the behavioural objectives movement. The strengths and weaknesses of behavioural objectives are discussed with reference to the relevant literature. Behavioural objectives in nursing education are considered and the tensions which their use may give rise to are noted. Finally, details are given of how a small-scale empirical study relating to behavioural objectives was conducted. PMID- 3845941 TI - The funding market for nursing research. AB - The finance for nursing research is obtained from a funding market where the nursing profession competes with other groups for limited resources. In order to compete effectively in that market, nursing needs to understand the nature of the market and the importance of the professional and social networks which underpin it. This paper aims to enhance that understanding in two ways. Firstly it presents a descriptive profile of the main types of funding agencies relevant to nursing (government departments, the Medical Research Council, Economic and Social Research Council, Health Education Council, the locally organized research schemes of the regions, private charities and industry) and summarizes the position of nursing in each sector. Secondly, the paper analyses the way in which the social networks of the funding market monitor and control the competition for research resources and how the nursing profession can best approach those social networks. PMID- 3845942 TI - Behaviour modification in nursing practice and research: a case study. AB - Using a behaviour modification programme, an attempt was made to teach a 39-year old dependent patient with a medical diagnosis of schizophrenia to reacquire and maintain self-care behaviours. Dependence in this project was limited to morning care behaviours, i.e. mouth-washing, face-washing, shaving and bathing. Praise and a token economy programme were used to reduce the number of prompts (help and reminders) the patient needed to accomplish the targeted behaviours. Although the treatment programme ran for only 4 weeks because the patient was prematurely transferred to another ward, an evaluation of the programme shows that nursing staff in psychiatric hospitals can facilitate healthy behaviours in schizophrenic patients through behaviour management skills. PMID- 3845943 TI - Nursing knowledge of hepatitis B infection. AB - A questionnaire was given to nurses in two hospitals, one general and one psychiatric. Answers to the questions revealed a lack of knowledge of the natural history of hepatitis B infection. There were no apparent differences between specialities or grades of nursing staff. Confusion of hepatitis A infection with hepatitis B infection was not the cause of incorrect answers. PMID- 3845944 TI - Breast feeding: differences in prevalence between caucasian and negroid women resident in Paddington and North Kensington, London, England. AB - Three hundred and thirty-seven caucasian women and 150 negroid women who were resident in an inner London health district, who gave birth in the district's maternity unit and who were transferred home before 6 days after delivery were studied in respect of their intentions and practices for feeding their babies. Differences in the numbers breast feeding within and between various sub-groups of the two racial groups were compared and inferences drawn in respect of to which group effort in promoting breast feeding should be directed. PMID- 3845945 TI - Janforum. Innovation in nursing--the role of higher education in relation to nursing practice. PMID- 3845946 TI - The 24-hour cycle: rhythms of healthy sleep (developing nursing strategies!). PMID- 3845947 TI - Day care: a new idea? Not really. PMID- 3845948 TI - Does knowledge enhance patient compliance? PMID- 3845949 TI - A zest for life! PMID- 3845950 TI - Is your patient about to fall? PMID- 3845952 TI - The computer doesn't have a heart! PMID- 3845951 TI - Are generic drugs dangerous for the aged? PMID- 3845953 TI - The despair of the homeless aged. PMID- 3845954 TI - [Urinary kallikrein levels during pregnancy]. AB - Whether to determine the urinary kallikrein (UKK) levels in the second trimester of pregnancy is valuable in predicting of gestosis, especially of hypertension, was studied using samples of urine obtained from 500 cases of pregnant women without gestosis, 50 pregnant women with gestosis and 50 cases of pregnancy with a variety of complications other than gestosis. The main results obtained were as follows: In normal pregnancy, UKK levels elevated with pregnancy for a peak in the first to the second trimester of pregnancy, tapering off thereafter. The UKK level was significantly lower in 20 pregnant women with gestosis especially in hypertensive type than in pregnant women without gestosis (p less than 0.001). Pregnant women with normal blood pressure who suffered no gestosis and had an extremely low UKK level, accounted for 9.8% of all pregnant women studied. This figure includes a large number of those who were in a high risk group for the onset of gestosis. From these findings, UKK was considered to be useful as one of the factors used in predicting the onset of hypertension in association with gestosis and we are now studying pregnant women in the 20th and 30th week of pregnancy in more detail. PMID- 3845955 TI - Quantitative study of secretory cell metaplasia induced by human neutrophil elastase in the large bronchi of hamsters. AB - To explore the time course and the mechanism of development of bronchial secretory cell metaplasia (SCM) induced by human neutrophil elastase (HNE), anesthetized hamsters were injected intratracheally with 300 micrograms highly purified HNE in 0.5 ml saline solution; saline-injected and untreated animals served as controls. At 3, 8, 16, and 21 days after treatment, animals were killed and their lungs fixed by vascular perfusion. Samples from the hilar region of the left lung, containing the main axial airway and its proximal branches, were embedded in Epon-Araldite, and 1 micron sections were stained with methylene blue. Epithelial cells with a luminal border were categorized into three cell types and expressed as a percent of total cells counted (mean 1900 per animal); cells containing at least three mucin granules were classified as secretory, ciliated cells displayed cilia or basal bodies, and cells with none of these characteristics were classified as indeterminate. Percentages of the three cell types in saline-treated animals, at all time points, were comparable to those in the untreated controls. With HNE treatment the secretory cell percentages were higher at 16 days (mean +/- SEM, 36.4% +/- 3.2%) and at 21 days (35.7% +/- 2.9%) than in the untreated animals (18.2% +/- 1.8%, P less than 0.05). The percentage of the indeterminate cells in the HNE group was decreased at days 8, 16, and 21 (7.2% +/- 1.6%, 5.0% +/- 1.4%, and 8.2% +/- 2.5%, respectively) compared with that in the untreated group (21.7% +/- 2.5%, P less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3845957 TI - Perceptual dysfunction: nursing assessment and management. AB - Perceptual dysfunction is a complex problem and can be a serious barrier to the patient's recovery of independence. Nurses play a significant role in the identification of a possible perceptual deficit and in the use of nursing interventions that complement and are coordinated with the work of the occupational therapist. Four common categories of perceptual dysfunction are identified. One-sided neglect and apraxia are emphasized and specific assessment data and nursing interventions for these two problems are discussed. Agnosia and visual-spatial relationship problems are described briefly. The related problem of visual deficits is outlined and discussed with reference to perceptual dysfunction. PMID- 3845956 TI - Experimental methyl mercury neurotoxicity: locus of mercurial inhibition of brain protein synthesis in vivo and in vitro. AB - Brain cell-free protein synthesis is inhibited by methyl mercury chloride (MeHg) following in vivo or in vitro administration. In this report, we have identified the locus of mercurial inhibition of translation. Intraperitoneal injection of MeHg (40 nmol/g body wt) induced variable inhibition of amino acid incorporation into the post-mitochondrial supernatant (PMS) harvested from the brain of young (10-20-day-old) rats. No mercurial-induced disaggregation of brain polyribosomes nor change in the proportion of 80S monoribosomes was detected on sucrose density gradients. No difference in total RNA was found in the PMS. Initiation complex formation was stimulated by MeHg, as detected by radiolabelled methionine binding to 80S monoribosomes following continuous sucrose density gradient centrifugation. After micrococcal nuclease digestion of endogenous mRNA, both in vivo and in vitro MeHg inhibited polyuridylic acid-directed incorporation of [3H]phenylalanine. However, the in vivo inhibition was no longer observed when [3H]phenylalanyl-tRNAPhe replaced free [3H]phenylalanine in the incorporation assay. The formation of peptidyl[3H]puromycin revealed no difference from controls. There was significant mercurial inhibition of phenylalanyl-tRNA Phe synthetase activity in pH 5 enzyme fractions derived from brain PMS of MeHg poisoned rats. These experiments revealed that the apparent MeHg inhibition of brain translation in vivo and in vitro is due primarily to perturbation in the aminoacylation of tRNA and is not associated with defective initiation, elongation, or ribosomal function. PMID- 3845958 TI - Meeting family needs following severe head injury: a multidisciplinary approach. AB - Families of neurotrauma patients experience significantly increased stress during the acute phase of injury. It is important to recognize each family's needs during this period in order to enhance the potential for recovery. Assessment of individual needs, communication with the health care team, and genuine concern are necessary. One successful approach to the group process is "The Family Huddle", a technique which has enjoyed positive results at one institution. PMID- 3845959 TI - Emotional depletion in critical care staff. AB - The cumulative effect of multiple patient deaths upon critical care staff may lead to emotional depletion and spiritual exhaustion. Attitudinal, behavioral, and social factors which contribute to such effects are examined. These factors include unresolved grief, the need to be perfect, projection of one's own needs, overseriousness, lack of sharing, inappropriate sharing at home, norms of solemnity, lack of structured opportunities for sharing, and administrative non responsiveness. Empirical research to further define the nature and etiology of "staff burnout" is a logical, but most difficult, next step. PMID- 3845960 TI - The human connection: the role of the nurse in organ donation. AB - Organ transplantation has greatly improved the grim outlook of patients suffering from end-stage organ failure. Unfortunately, many of these waiting patients will not realize their dream of being transplanted since the number of organ donors referred to transplant programs simply does not meet the need. This article describes the role the nurse can play in organ donation by discussing medical criteria needed to assess the donor, the determination of neurologic death, and guidelines to approaching families for consent. PMID- 3845961 TI - Repatterning of stroke rehabilitation clients following return to life in the community. AB - The purpose of this study was to learn more about problems stroke patients experience after rehabilitation and how they perceive and interact with their environment. Findings indicate that nurses need to consider individual life patterns, current goals and the resources and impediments of the home and community environment in planning interventions. Subjects wanted a challenging but not overly stressful environment. Most of their energy was consumed with accomplishing the activities of daily living. Complex planning and timing were necessary to continue a few pleasurable activities. Advocates are needed for better design and accessibility in the environment of our aging population, with increasing numbers of chronically ill and disabled, and for all people. PMID- 3845963 TI - Profile on people: Pamela Mitchell. Interview by Hillary Lipe. PMID- 3845962 TI - Levels of cognitive functioning: evaluation of interrater reliability. AB - This study examined the reliability of the Levels of Cognitive Functioning Scale, an observational tool used to assess head-injured patients. Twenty-two undergraduate and ten graduate students viewed videotapes of four patients at various levels and rated each using the scale. Findings indicate a high percent agreement of subjects with each other for the four patient examples and with the correct level (p less than .001). These results suggest that this assessment tool may be useful in planning nursing interventions. PMID- 3845964 TI - Prevention of nervous system trauma from travel in motor vehicles. AB - Brain and spinal cord injuries are a frequent cause of death and long-term disability in motor vehicle accidents. Helmet use reduces death and head injury severity in motorcycle accidents. Proper use of child restraints can prevent death from falls and vehicle crashes. Auto lap and shoulder restraints, when in use, reduce death from accidents and falls from cars. Passive protections, such as air bags, vehicle design for crashworthiness, and automatic seatbelt systems are less available for economic reasons. Voluntary use of available devices is the remaining viable option. One-to-one education may help promote use of protective devices. The greatest impact lies in legislative requirements for self protection. It is ethically justifiable to require use of devices such as child restraints, seatbelts, and motorcycle helmets to prevent death and disability. PMID- 3845965 TI - Metabolic complications associated with severe diffuse brain injury. AB - Diffuse axonal injury (DAI), the severest form of diffuse brain injury, causes extensive damage throughout the cerebrum, diencephalon and brainstem. The effects of this injury, however, are not isolated to the brain. This paper discusses diffuse axonal injury, the metabolic complications to be anticipated from the systems' response to cerebral trauma in general, and the nursing implications. PMID- 3845966 TI - Factors affecting intracranial pressure: a descriptive study. AB - This study examined the effects of 365 occurrences on the intracranial pressure (ICP) of four patients with severe head injuries and a Glasgow Coma Score below five. The occurrences were in: 1) health care activities, 2) patient-initiated activities, and 3) environmental stimuli. The health care activities that increased intracranial pressure were suctioning, turning, and flexion of the head; decreases were realized by elevating the head of the bed and repositioning the patient. The patient-initiated activities that increased intracranial pressure were flexion of extremities, rotation of the neck, and coughing. In contrast to previous reports, environmental stimuli did not affect intracranial pressure and bathing increased it. Recommendations for nursing care include: turning patients more slowly to less acute angles; proper head/neck positioning; and more direct psychosocial interactions with families of patients who have low Glasgow Coma Scores. PMID- 3845967 TI - Increased intracranial pressure: management with an intraventricular catheter. AB - A patient returns from the operating room with an intracranial pressure (ICP) of 25 mm Hg as measured by an intraventricular catheter. What measures will decrease his ICP, what is the most threatening risk of an intraventricular catheter, and what nursing measures will decrease those risks? The clinical nurse caring for a patient with an intraventricular catheter must understand the dynamics of intracranial anatomy and physiology as well as the methods and rationale for medical and nursing management. An adequate knowledge base of each aspect of the intraventricular catheter and drainage system, from insertion to removal, is very important in decreasing the risks that confront these patients. These risks include infection, collapse of the ventricles, rapid ventricular drainage, increased potential for subdural hematoma, and subarachnoid hemorrhage. Familiarity with this information will minimize nursing uncertainties and fears, enabling the nurse to care for such patients with the required expertise and confidence. PMID- 3845968 TI - Assessment center technology. Selecting head nurses. AB - Assessment center technology is a selection method for supervisory personnel. It uses a candidate's performance in actual work sample exercises. The use of assessment centers in selecting head nurses is explained. Specific results, such as increases in productivity, establishment of standards of practice, and increases in employee satisfaction, are described. Recommendations for assessment center use and suggestions for implementing assessment centers to select nursing managers are presented. PMID- 3845969 TI - Decentralization reduces nursing administration budget. AB - Faced with the need to decrease personnel costs, nursing administrators at Bayfront Medical Center analyzed the nursing department's organizational structure. The resulting change to a decentralized management structure, streamlining the management staff, is described. The radical, yet promising approach of eliminating evening and night shift nursing supervisors is discussed. PMID- 3845971 TI - Tackling writer's block. Suggestions for self-modification. AB - Writing is an important and pervasive part of every administrator's duties, and problems with writer's block and procrastination can impede one's productivity. This article describes behavioral assessment and intervention methods (e.g., task analysis, reinforcement analysis, time-structuring, charting, and deposit contracting) that an individual can use to modify his or her writing habits. PMID- 3845970 TI - The Neuman Systems Model in practice. Planning phase. AB - How do you choose and plan for the implementation of a conceptual model for professional nursing practice? This article discusses one institution's experience with the Neuman Systems Model. The process discussed in this article will serve as a guide for other nursing administrators considering this significant undertaking. PMID- 3845973 TI - The effect of a nurse internship program on novice nurses' self-evaluation of clinical performance. PMID- 3845972 TI - What to do about toxic mentors. PMID- 3845975 TI - Qualitative studies: from observations to explanations. PMID- 3845974 TI - Job satisfaction and interruptions in the planned time of nursing managers. PMID- 3845977 TI - Electrolyte balance. Part II. PMID- 3845976 TI - Kidney camp. PMID- 3845978 TI - A framework for organizing a CAPD training program. PMID- 3845979 TI - Quality time. PMID- 3845980 TI - A two week hemodialysis training program for nurses. PMID- 3845982 TI - Dietary phosphorus. PMID- 3845981 TI - The electrical heart. PMID- 3845983 TI - Desmopressin: a new drug for the treatment of bleeding disorders. PMID- 3845984 TI - Ophthalmic manifestations of renal disease. PMID- 3845986 TI - Dialysis team consultation group: planning, process, and evaluation. PMID- 3845985 TI - Home and in-center hemodialysis patients--a descriptive study. PMID- 3845987 TI - Contracting for care. One nursing approach to the hospitalized borderline patient. PMID- 3845988 TI - Destroyers. Written treatment contracts can help cure self destructive behaviors of the borderline patient. PMID- 3845989 TI - The borderline experience: subjective impressions. PMID- 3845990 TI - Using Lakovic's system. Countertransference classifications. PMID- 3845991 TI - The patient is splitting. Everyone knows and nothing changes. PMID- 3845992 TI - [Childbirth in Europe]. PMID- 3845993 TI - [Childbirth in water]. PMID- 3845994 TI - [Midwife-conducted births in a large maternity hospital. Advantages and drawbacks]. PMID- 3845995 TI - [Midwife-conducted births in a small maternity hospital. Advantages and drawbacks]. PMID- 3845996 TI - Men in nursing: a review of research studies. PMID- 3845997 TI - Male labor and delivery nurse? PMID- 3845998 TI - One man's nursing career... nurse practitioner, educator, public health official. PMID- 3845999 TI - Financial (care) plan. PMID- 3846000 TI - The administration's health care policies. PMID- 3846001 TI - Pre-professional and substance abuse: how are nursing educators handling the problem? PMID- 3846002 TI - An update on the "entry" issue. PMID- 3846003 TI - Is it "time to go back to school"? PMID- 3846004 TI - A national nursing leader's view. Entry into practice. PMID- 3846005 TI - R.N. perspective of home health care needs of family members. PMID- 3846006 TI - [Indices of the blood kallikrein-kinin and coagulating systems in hypertension patients during treatment]. PMID- 3846007 TI - [Professionalization and autonomy. Discussing on a clear basis]. PMID- 3846008 TI - [Autonomy: nursing personnel and the judge. Which rules of conduct?]. PMID- 3846009 TI - [Autonomy: critical observations by a nonprofessional. The sociopolitical viewpoint]. PMID- 3846011 TI - [Autonomy: psychiatric nursing. The phase of semi-professionalization]. PMID- 3846010 TI - [Autonomy of the public health nurse. Developing as an individual]. PMID- 3846012 TI - [Autonomy: opinion of a group of pediatric nurses. The interest of the child is all-important]. PMID- 3846013 TI - [Autonomy: the independence of the pediatric nurse. Observation and a "sense for diagnosis"]. PMID- 3846014 TI - [Nursing care of cancer patients--a professional and human challenge]. PMID- 3846015 TI - [Ambulatory care of children with tumors. Compassion--but also rejoicing!]. PMID- 3846016 TI - [Nursing and care during and after radiotherapy. The open door]. PMID- 3846017 TI - [Implantable catheter systems. A good alternative]. PMID- 3846018 TI - [Enterostoma: special aspects in nursing and care. Corner stones for rehabilitation]. PMID- 3846019 TI - [Clinical cancer research: role of the nurse. Guarantee for optimal patient care]. PMID- 3846020 TI - [Clinical cancer research: example from practice. Nurses must collaborate at the forefront!]. PMID- 3846021 TI - [Psychological stress in nursing of tumor patients: coping possibilities. Taking care of yourself]. PMID- 3846022 TI - [Educational possibilities for nursing staff in Switzerland. Successful course in Geneva and St. Gallen]. PMID- 3846023 TI - [Health education in Nicaragua. An element of reconstruction of the country]. PMID- 3846025 TI - [Cancer and the mind. Removing guilt from the patient]. PMID- 3846024 TI - [Breast cancer. The importance of psychological support]. PMID- 3846026 TI - [Organization of nursing care in the Emergency Department of the University Hospital Center of Vaud. The restorations in question are indispensable]. PMID- 3846028 TI - [Diagnosis and therapy of acute middle ear inflammation. I]. PMID- 3846027 TI - [Care of the cancer patient in the terminal stage. At home or in the hospital?]. PMID- 3846029 TI - [What is nuclear medicine?]. PMID- 3846030 TI - [Helping--facilitating--cooperating. The expanded professional comprehension in community health nursing]. PMID- 3846031 TI - [Boundary situation of medical and nursing actions. On all sides the same problems]. PMID- 3846032 TI - [The deaconess center in the tension sphere of contradictory expectations]. PMID- 3846033 TI - [Significance of nursing service administration--problems of its position. "Fish starts to smell at the head first"]. PMID- 3846034 TI - [Discussion on a new concept of death]. PMID- 3846035 TI - [Patient risk in bladder infection. Transurethral urinary catheter irrigation using the Fresenius' pleated pressure flask]. PMID- 3846036 TI - [Differentiated assistance--comprehensive care. Expanded professional comprehension in community health nursing]. PMID- 3846037 TI - [Harmful infectious waste?]. PMID- 3846038 TI - [Causes, clinical aspects and therapy of osteomyelitis]. PMID- 3846040 TI - [I am becoming a veterinarian! Interview]. PMID- 3846039 TI - [Diagnosis and therapy of acute and chronic middle ear inflammation. II]. PMID- 3846041 TI - [Everybody knows something which another person does not know. Introductory observations to a discussion with colleagues in nursing service in the framework of inservice continuing education]. PMID- 3846042 TI - [Community health nursing within the church community. The relationship of the church community to the social center from the viewpoint of community health nursing]. PMID- 3846043 TI - Physical, psychological, social, and lifestyle differences among adolescents classified according to cigarette smoking intention status. AB - This study was conducted to determine the extent to which multiple physical, psychological, social, and lifestyle measures differ among high school males classified according to cigarette smoking intention status including nonintenders, mild intenders, and strong intenders. The Physical Performance Test for California, to measure six traits of physical fitness and Cattell's 16PF Questionnaire to assess manifold dimensions of personality were administered to 386 high school males. Self-concept was measured by Rosenberg's Self-esteem Scale and body build was assessed using Tucker's Perceived Somatotype Scale and the Body Mass Index. Data relative to marital status of parents, exercise experience, church attendance, participation in athletics, alcohol drinking habits, television viewing behavior, intention to attend college, dating behavior, as well as general demographic information and intention to smoke cigarettes were assessed by a written questionnaire. Results indicated that nonintenders were significantly more self-confident, intelligent, emotionally stable, moralistic, conservative, group oriented, self-controlled, relaxed, and more likely to respond in a socially desirable manner than were strong intenders. Nonintenders reported less dating, less television viewing, less alcohol consumption, and perceived themselves as and were determined to be less obese than strong intenders. Nonintenders also reported greater intentions to attend college, greater varsity athletic participation, were more likely to be residing with their natural mothers, and were more physically fit than were strong intenders. Possible health education and youth smoking prevention strategies are discussed. PMID- 3846044 TI - The relationship of cognitive and behavioral skills to adolescent tobacco smoking. AB - This study examined an assumption held by many smoking prevention programs that social skills can affect the onset of tobacco smoking. Data from 129 sixth graders were used to predict smoking behavior 15 months later in seventh grade. Five skill variables emerged as the best predictors of future smoking. By analyzing discriminant scores based on individual levels of social skills, the investigators were able to accurately classify 80% of the students surveyed as smokers or nonsmokers. Measures of social skills accounted for 29% of the variation in adolescent smoking behavior. PMID- 3846045 TI - Employment trends of school personnel and staff 1980-1990. AB - The American School Health Association's School Nurse Study Committee and the National Association of State School Nurse Consultants requested that a study be conducted to identify future employment trends for school nurses and how these trends compare with employment trends for other personnel employed in the school districts. School districts were asked for numbers of personnel employed in 1980, 1981, and 1982, and to project their intention to increase, decrease, or maintain the same number of personnel until 1990. The results of the study indicated that the profession showing the greatest decrease is the classroom teacher and that school nurses were not identified to have a greater decrease in employment than other professionals. PMID- 3846046 TI - The role of the school in consumer health education. AB - Ethical consumer health education is education that is noncoercive and facilitates an individual's voluntary adoption of health improving behaviors. Patients and consumers attempting to utilize the medical marketplace for cure or prevention may be ill-prepared to do so because of the complexity of the marketplace, the strong marketing influences of the marketplace, and their own lack of fundamental preparation in the rudiments of decision-making, valuing, assertiveness, data collection, and other skills necessary to be a good consumer. For this reason, school-based consumer health education is necessary to prepare current and future consumers to safely and efficiently use the medical marketplace. PMID- 3846047 TI - Health concerns and teacher training of selected elementary teachers in Michigan. AB - With reductions in the number of school-based health personnel, increased responsibility for the identification of health problems falls to the classroom teacher. This paper describes a survey of the level of health-related training among a sample of elementary teachers in a Michigan intermediate school district, with the teachers' perceptions of their ability to recognize and deal with selected student health problems. Though some differences existed between classroom and other teachers, and between veteran and newly-trained teachers, the overall results were clear--elementary teachers are not well-prepared for their expanded role. This fact was especially true for more difficult to recognize and potentially more serious health problems such as injury to the head and substance abuse, where teachers expressed considerable discomfort with their ability and lack of preparation. Several recommendations are offered relating to the need for health training. PMID- 3846048 TI - The health knowledge of ninth grade students in Oyo State, Nigeria. AB - A stratified random sample of 540 ninth grade (Class 3) students in Oyo State, Nigeria, were administered the 60-item Health Education Test Form 3A. The purpose of the study was to obtain baseline data concerning the health knowledge of the students for use in the development of Health Education curricula in Oyo State. Subjects from the metropolitan area, from medium-size towns, and from rural areas recorded composite mean scores of 29.02, 24.78, and 25.01, respectively; indicating a general deficiency of health knowledge among the subjects. Recommendations are offered concerning curriculum, teacher preparation, and international cooperation to assist in the development of quality Health Education programs for Nigerian students. PMID- 3846049 TI - Evaluation of American Cancer Society elementary school public education programs. AB - A comprehensive evaluation of two American Cancer Society (ACS) curriculum programs, An Early Start to Good Health (grades K-3) and Health Network (grades four-six), was conducted to assess the impact of the materials on student health knowledge, attitude, and behavior and to determine procedures and practices employed by teachers in utilizing the materials. The materials were tested with 26 classroom teachers and 660 children in grades K-6, and the material utilization practices of an additional 356 teachers in 27 schools were examined. Findings from the evaluation suggest that the two programs are effective in promoting child health education, but questions were raised concerning the ACS requirements for teacher training and the Usage Report Card system of documentation. PMID- 3846050 TI - School health education: who, when, where? PMID- 3846051 TI - Computer system support. Part II. PMID- 3846053 TI - [Present state and future of computerization of hospitals]. PMID- 3846054 TI - [Use of high technology in nursing work]. PMID- 3846052 TI - Locus of control as a treatable personality construct in alcoholics. PMID- 3846055 TI - [Innovation of community medicine by new media]. PMID- 3846056 TI - [The aspect of nurses' thinking with possible assistance by computers]. PMID- 3846058 TI - [Ideas on management and administration of the Nursing Department of Rush Presbyterian-St. Luke's Medical Center (an interview)]. PMID- 3846057 TI - [The ability of students to observe the clinical training of nursing. 3]. PMID- 3846059 TI - [Gender role]. PMID- 3846060 TI - [Structure and function of communication in nursing administration]. PMID- 3846061 TI - [Task component of the nurse's aide in the Japanese hospitals: comparative study of the present and 15 years ago]. PMID- 3846062 TI - [Development of a relationship between a schizophrenic and a student nurse]. PMID- 3846063 TI - [Study of the effective teaching-learning method of the unit "helping elimination in pediatrics"]. PMID- 3846065 TI - [Nursing process: nursing of apoplexy patients. The process of diagnosis of cerebral hemorrhage]. PMID- 3846064 TI - [Nursing process: nursing of apoplexy patients. Pathophysiology of cerebral hemorrhage and the life and prognosis of the patient]. PMID- 3846066 TI - [Nursing process: nursing of apoplexy patients. Keypoints in the observation of the general condition of the patient]. PMID- 3846067 TI - [Nursing process: nursing of apoplexy patients. Nursing plans for patients with cerebral hemorrhage]. PMID- 3846068 TI - [Nursing process: nursing of apoplexy patients. Nursing of an apoplexy patient excessively dependent on her family]. PMID- 3846070 TI - [Case study of the month: towards a more fulfilling daily life. Nursing of an aged, unresponsive patient with a poor prognosis--assistance toward a more fulfilling life]. PMID- 3846069 TI - [Nursing process: nursing of apoplexy patients. Assistance in daily activities with a consideration toward creation of an environment for social rehabilitation: discussion]. PMID- 3846071 TI - [Case study of the month: towards a more fulfilling daily life. A lesson in nursing of a patient with a cognition disorder--importance of the interpretation of the clinical signs]. PMID- 3846072 TI - [Case study of the month: towards a more fulfilling daily life. Assistance in the daily life of a patient with liver cirrhosis--a lesson in the assistance in the rest care of a patient in the non-compensatory stage]. PMID- 3846073 TI - [Case study of the month: towards a more fulfilling daily life. Shampooing procedure which is comfortable to a bedridden patient--designing of equipment to ease the pain in the back of the neck]. PMID- 3846075 TI - [Test yourself. Nursing keypoints: Pre- and postoperative nursing of a patient with cholelithiasis]. PMID- 3846074 TI - [Conference: lessons in clinical training. Understanding of the significance of team nursing]. PMID- 3846076 TI - [Case report. Nursing of a patient having hallucinations and delusions--the importance of focusing on the normal aspects of the patient's behaviors]. PMID- 3846077 TI - [Patients' background and their acceptance of amputation]. PMID- 3846078 TI - [Nursing of patients with phantom limb]. PMID- 3846079 TI - [Participation of the nursing staff in social rehabilitation of amputees]. PMID- 3846080 TI - [Report on a nursing seminar for nursing students in Denmark (2). A visit to the Danish Nursing Association]. PMID- 3846081 TI - [Treatment of trophic ulcers]. PMID- 3846082 TI - [Mental disorders in disseminated sclerosis patients]. PMID- 3846083 TI - [Use of physical factors in treating bronchial asthma and rhinosinusitis in children]. PMID- 3846084 TI - [Work of the nurse in radio diagnostic subunits]. PMID- 3846085 TI - [Work with superhigh intensifying screens]. PMID- 3846086 TI - [Diabetes mellitus]. PMID- 3846087 TI - [Work of the nurse in the allergology department]. PMID- 3846088 TI - [Role of the nurse in preparing children for entry into a preschool]. PMID- 3846089 TI - [Creation of a favorable psychological climate in the family]. PMID- 3846090 TI - [Graphite fabric-based physiotherapy electrodes]. PMID- 3846091 TI - [Treatment of the dystrophic-inflammatory form of periodontosis in the stage of exacerbation]. PMID- 3846092 TI - [Participation of the nurse in organizing the treatment of patients with periodontal pathology]. PMID- 3846093 TI - [Problems of work intensification for paramedical personnel]. PMID- 3846094 TI - [Laxatives]. PMID- 3846095 TI - [Fungal diseases]. PMID- 3846096 TI - [Health education work in preventing injuries to children in preschools]. PMID- 3846097 TI - [Work of a nurses' council in a spinal ward]. PMID- 3846098 TI - [General legal and deontological norms of the interrelations of nurse and patient]. PMID- 3846099 TI - [Diabetic angiopathy]. PMID- 3846100 TI - Antenatal classes--are they of benefit? PMID- 3846101 TI - Continuity of care-Southern Thames area. PMID- 3846103 TI - Acupuncture anaesthesia for caesarean section. PMID- 3846102 TI - Introduction to acupuncture for midwives. PMID- 3846104 TI - Do women really want natural childbirth? PMID- 3846105 TI - [Disinfection of pancreatin preparations with gamma rays]. PMID- 3846106 TI - Gown wearers I have known. PMID- 3846107 TI - The perioperative role of the OR nurse. A personal view. PMID- 3846108 TI - Total patient care and operative procedure at the Nottingham Eye Hospital. A case history. PMID- 3846109 TI - The case for pre-operative visiting. PMID- 3846110 TI - The commission unveils a new future for the profession. The shape of things to come. PMID- 3846111 TI - The education of nurses: a new dispensation. PMID- 3846112 TI - Council hails report as 'milestone in nurse education'. College backs commission's findings. PMID- 3846113 TI - New RCN policy statement on delivery of effective personnel service. PMID- 3846114 TI - Coping with the contract. PMID- 3846115 TI - Royal College of Nursing. Paying a debt. PMID- 3846116 TI - Discharge of elderly patients. PMID- 3846117 TI - See you in Bournemouth. PMID- 3846118 TI - Come out of your shells. PMID- 3846119 TI - Nurses must manage nurses. PMID- 3846120 TI - Royal College of Nursing. A telling point. PMID- 3846121 TI - It was good to know the RCN was behind students all the way. PMID- 3846123 TI - Performing miracles. PMID- 3846122 TI - No section of the NHS can consider itself exempt from the impact of the Griffiths Report. PMID- 3846124 TI - Royal College of Nursing: clear message. PMID- 3846125 TI - RRB debate on primary health care matters must give us all cause for optimism. PMID- 3846126 TI - We need to build on the type of unity expressed in Bournemouth. PMID- 3846127 TI - Unit's 'more like a western'. PMID- 3846129 TI - Teaching clinical nurse specialists to lead ... and to succeed. PMID- 3846128 TI - Nursing education and service: the payoffs of partnership. PMID- 3846130 TI - Low-birthweight infants: balancing the scales of care. PMID- 3846131 TI - Clinical nurse specialist: in search of the right role. PMID- 3846132 TI - Transcultural care diversity and universality: a theory of nursing. PMID- 3846133 TI - Educational preparation for nursing administration. PMID- 3846134 TI - Strengthening communication signals to build a research-based practice. PMID- 3846136 TI - Senate outlook: an interview with Sheila Burke. PMID- 3846135 TI - D.C. regulatory battle proves our fight is far from over. PMID- 3846137 TI - Good news, bad news, or no news: improving radio and TV coverage of nursing issues. PMID- 3846138 TI - High tech--high touch it's high time for nursing. PMID- 3846139 TI - Rehab program's marketing plan was tailored to fit. PMID- 3846140 TI - Surveying members keeps constituent leagues on target. PMID- 3846141 TI - Test your knowledge of psychiatric and psychosocial nursing. Part 2. PMID- 3846142 TI - Balloons in the CCU. PMID- 3846143 TI - Managing intractable pain with methadone (nursing grand rounds). PMID- 3846144 TI - Perfecting your I.V. therapy techniques. Part I. PMID- 3846145 TI - Giving the help that goes on giving. PMID- 3846146 TI - The inside story on preload and afterload. PMID- 3846147 TI - The incident report if in doubt, fill it out. PMID- 3846148 TI - Assessing the thyroid. PMID- 3846149 TI - Helping the parents of a stillborn. PMID- 3846150 TI - Action stat! Lacerated carotid artery. PMID- 3846151 TI - Professional growth. Support, do you give it? Do you get it? PMID- 3846152 TI - Megatrends in nursing. 10 new directions that are changing your profession. PMID- 3846153 TI - Self-inflicted injury. Breaking a tragic cycle. PMID- 3846154 TI - Getting through to Felicia was a challenge. The most difficult person I've ever worked with. PMID- 3846155 TI - What nurses think of computers. Part 2. PMID- 3846156 TI - Teaching your patient to live with C.O.P.D. PMID- 3846158 TI - Coping with conflict: know which technique to call into play. PMID- 3846157 TI - Dealing with anaphylaxis--stat. PMID- 3846159 TI - Changing the suction catheter each time you enter a tracheostomy: necessity or waste? PMID- 3846160 TI - Life-and-death decisions in the I.C.U. Centering on patients' and families' needs. PMID- 3846161 TI - Protecting your patient's privacy. PMID- 3846163 TI - Eleventh-hour teaching. Patients in the dark. Staff conflicts. Caring too much. PMID- 3846162 TI - What our readers said about entrapping a colleague. PMID- 3846164 TI - Freedom of speech? Court case. PMID- 3846165 TI - Law for the nurse manager. The nurse and artificial insemination. PMID- 3846166 TI - Admitting, transfer and discharge: capturing savings from system design. PMID- 3846167 TI - Adapting PCS to emergency services. PMID- 3846168 TI - Ethics: nurse patron or nurse advocate. PMID- 3846169 TI - CE: out-dated notions can't up-date nurses. PMID- 3846170 TI - Primary nursing consultation: a support group clears the air. PMID- 3846171 TI - Sharing a CNS: most service for least cost. PMID- 3846172 TI - Comprehensive management of nursing care delivery. PMID- 3846173 TI - Whole-brain management: part III. PMID- 3846174 TI - Art and science of management. Working with dedicated people. PMID- 3846175 TI - Interviewing: getting the head nurse's opinion. PMID- 3846177 TI - If the cap fits.... PMID- 3846176 TI - Mind over mind-set. PMID- 3846179 TI - Do you offer first aid? PMID- 3846178 TI - Dichloroacetyl chloride exposure? Case history. PMID- 3846180 TI - Breaking the habit. PMID- 3846181 TI - Effects of chemicals on health--5. Atmospheric monitoring methods. II. PMID- 3846182 TI - CVD risk factor reduction and the workplace: a national view. PMID- 3846183 TI - Cardiovascular risk factor reduction in the workplace: why and how? PMID- 3846184 TI - Cost analysis and workplace health promotion programs. PMID- 3846185 TI - Information systems for worksite health promotion programs. PMID- 3846186 TI - After the screening. PMID- 3846187 TI - Cardiovascular risk programs: developments within the Blue Cross and Blue Shield organization. PMID- 3846188 TI - Health Care Financing Administration and Blue Cross and Blue Shield of Maryland programs. PMID- 3846189 TI - Providing a therapeutic milieu on an inpatient adolescent unit. PMID- 3846190 TI - Initial assessment and triage of the multiple injured patient. PMID- 3846191 TI - After the emergency is over: delayed and occult injuries in the trauma patient. PMID- 3846193 TI - Coping with trauma. PMID- 3846192 TI - Recognition and management of the alcohol dependent trauma patient. PMID- 3846194 TI - Nurses as policymakers: an analysis of the dynamics of power. PMID- 3846195 TI - The kinetic treatment table: a new approach to bed rest. PMID- 3846196 TI - A study of blood-drainage patterns on synthetic cast materials. PMID- 3846197 TI - NAON Certification Task Force literature review section summary report. PMID- 3846199 TI - Dosage calculation. Method and workbook. PMID- 3846198 TI - Single-dose versus conventional therapy of urinary tract infections in female adolescents. AB - A randomized, prospective study was done to assess the efficacy of single-dose nu conventional treatment of acute urinary tract infection (UTI) in female adolescents. Thirty-one 12- to 18-year-old female adolescents with symptoms of an acute UTI and a urine culture with greater than 10(5) organisms were treated with amoxicillin, either as a 3.0-g single dose or 250-mg three times daily for ten days. Urine cultures obtained three days after completing therapy in each group, showed bacteriologic cure rate of 69% (11/16) with single-dose treatment compared with a cure rate of 87% (13/15) in the conventional treatment group (P = .23). When patients with resistant organisms were excluded, the cure rate was 85% in both groups. Complete symptom resolution in less than two days after commencing treatment occurred in 36% of single-dose group nu none of the patients in the conventional-dose group. The finding has not been previously reported in single dose trials. Candida vaginitis occurred in 20% of the conventional-dose group nu none of the single-dose group. All patients in the single-dose group kept their first scheduled follow-up appointment, whereas 40% in the conventional group required reminders and rescheduling. Perfect compliance with the medication regimen was reported by 27% of the patients taking ten days of medicine. Although single-dose cure rates may not be superior to conventional-dose rates, the advantages of single-dose treatment include increased compliance with medication and follow-up, decreased side effects, and more rapid resolution of symptoms. PMID- 3846200 TI - Even one mistake is too many. PMID- 3846201 TI - Complaints. Unchartered territory. PMID- 3846202 TI - Sexual deviancy. Sexual healing. PMID- 3846204 TI - Health education. Confidence comes first. PMID- 3846203 TI - If only they'd told me. PMID- 3846205 TI - Head injury. PMID- 3846206 TI - No heroes, no villains. PMID- 3846207 TI - Where the 12-hour shift works. PMID- 3846208 TI - Guidelines for the ward round. PMID- 3846209 TI - Models and theories. Eight. Critical examination. PMID- 3846210 TI - Backchat. Are teachers worth more? PMID- 3846211 TI - Continence. Getting the whole picture. PMID- 3846212 TI - Continence. Preparing for the future. PMID- 3846213 TI - Continence. How would you manage? PMID- 3846214 TI - Continence. Speaking from experience. PMID- 3846215 TI - Continence. Speaking from experience. Keeping to a routine. PMID- 3846216 TI - Continence. Intermittent catheterisation for children. PMID- 3846217 TI - Continence. Social skills for the mentally handicapped. PMID- 3846219 TI - Health and media. How health hits the headlines. PMID- 3846220 TI - Cancer screening: failing the screen test. PMID- 3846218 TI - Smaller slice of the pie. PMID- 3846221 TI - Peer review: face to face with AIDS phobia. PMID- 3846222 TI - In whose interest? PMID- 3846223 TI - Night duty. Burning the midnight oil. PMID- 3846224 TI - Night duty. Out of rhythm. PMID- 3846225 TI - Night duty. What the nurses say. PMID- 3846226 TI - Cause for complaint. A question of priorities. PMID- 3846227 TI - Care about food. Service included. PMID- 3846228 TI - A shift in emphasis. PMID- 3846229 TI - Giving patients a say. PMID- 3846230 TI - Learning to live with multiple sclerosis. PMID- 3846231 TI - The tortoise and the hare. Continuous assessment versus the exam system. PMID- 3846232 TI - Continuous assessment. A move in the right direction? PMID- 3846234 TI - The last waltz. PMID- 3846233 TI - Backchat. Taking control. PMID- 3846235 TI - That's the way the money goes. PMID- 3846236 TI - Safe in his hands?. Interview by Andrew Cole. PMID- 3846237 TI - Evolution of the species? PMID- 3846239 TI - Education. Setting the students free. PMID- 3846238 TI - Violence--the enemy within. PMID- 3846240 TI - Under surveillance. PMID- 3846241 TI - Mechanisms of self defence. The limits of suffering. PMID- 3846242 TI - An admission of crisis. PMID- 3846243 TI - Budgeting for beginners. Controlling the purse-strings. PMID- 3846244 TI - Temperature. PMID- 3846245 TI - Stepping stones. PMID- 3846246 TI - Systems of Life No 124. Setting up the systems--24. PMID- 3846247 TI - Education. Learning not to understand. PMID- 3846248 TI - Backchat. Look back in anger. PMID- 3846249 TI - Squatting in labour and left lateral births for posterior position. PMID- 3846250 TI - Low-birth-weight (LBW) infants. PMID- 3846251 TI - The nurse practitioner. 2. An unlikely setting. PMID- 3846252 TI - Down your way. Developing in all directions. PMID- 3846253 TI - Research. One awake, all awake! PMID- 3846254 TI - Mental handicap nursing. 2. A long-term plan. PMID- 3846255 TI - Management. Accountability. PMID- 3846256 TI - A message to midwives. PMID- 3846257 TI - Splinters are hurting the profession. PMID- 3846258 TI - Primary nursing in mental illness. PMID- 3846259 TI - Understanding glaucoma. PMID- 3846260 TI - New design for the old. PMID- 3846261 TI - Nurse practitioner. 3. Lifestyle equals health. PMID- 3846262 TI - A model of care. PMID- 3846263 TI - Speak out and broadcast your feelings on pay. PMID- 3846264 TI - Everything's on site. PMID- 3846265 TI - Mental handicap nursing. 3. Ten tokens to the 1 lb. PMID- 3846266 TI - A stretcher case? PMID- 3846267 TI - Anorexia nervosa in pregnancy. PMID- 3846268 TI - Everywoman's responsibility. PMID- 3846269 TI - Research series. 1. Starting the study. PMID- 3846270 TI - Trauma '85. Sudden death. PMID- 3846271 TI - Management. Reorganisation at district level. PMID- 3846272 TI - The nurse practitioner. 4. Responding to situations. PMID- 3846273 TI - Barred from a public place. PMID- 3846274 TI - Is the grass greener on the university campus? PMID- 3846276 TI - Do not underestimate yourself. PMID- 3846275 TI - Mental handicap nursing. 4. Programmes for progress. PMID- 3846277 TI - Community. Advances in non-institutional care. PMID- 3846278 TI - Coronary care. Don't forget to talk to them. PMID- 3846279 TI - Coronary care. Telling it straight. PMID- 3846280 TI - Nursing care study. Below-knee amputation. PMID- 3846281 TI - Spine-chilling statistics. PMID- 3846283 TI - Use of an ecologic model to identify children at risk for infection and to quantify the expected impact of the risk factors. PMID- 3846282 TI - Choosing antimicrobials. Factors to consider, available agents. AB - Many factors are involved in choice of an antimicrobial agent. Cost has become a matter of increasing concern. Of course, overall expense for the hospitalized patient includes costs of tests for monitoring for toxicity as well as administration costs, which are affected by the dosing frequency. A reasoned choice necessitates knowledge of the place of newer agents in the therapeutic armamentarium and of some new applications of well-established drugs. PMID- 3846284 TI - Expanding nursing's practice terrain: imperatives for future viability. PMID- 3846285 TI - The health fair: an effective approach to health promotion? PMID- 3846286 TI - A community-based support group for families and patients after acute coronary disease. PMID- 3846288 TI - Atomic motions in phenylalanine transfer RNA probed by molecular dynamics simulations. AB - A 24 psec molecular dynamics simulation of tRNAPhe reveals a very stable model whose average structure is close to that of the crystallographic studies. The root mean square atomic motions correlate very well with the thermal factors from crystallography and are largely determined by packing forces. These motions are generally more anisotropic than those seen in a molecular dynamics simulation of a globular protein, and the anisotropic effects are also primarily a consequence of packing considerations. The development and examination of molecular dynamics models for macromolecules is an interesting basic research problem in biophysical chemistry, and it is now reasonably well advanced. The more exciting tasks of using these models to predict experimental properties and to examine biological function are just beginning. PMID- 3846287 TI - Renin angiotensin aldosterone system, urinary prostaglandins and kallikrein in pregnancy induced hypertension. Evidence for a disregulation of the renin angiotensin-prostacyclin loop. AB - Plasma renin activity and aldosterone concentrations were measured simultaneously with urinary excretion of kallikrein and four prostaglandins (PGE2, PGF2 alpha, 6 keto PFG1 alpha and TXB2) in 23 patients with pregnancy induced hypertension (17 with permanent PIH and six with labile PIH, since in these latter their hypertension was controlled only by home bed rest) and in 16 normotensive pregnant women at the same stage of gestation (31 +/- 3 weeks). PRA was lower in permanent PIH than in controls and in labile PIH. No difference between the three groups was observed for plasma aldosterone and the urinary excretion of kallikrein and of the prostaglandins except that TXB2 was higher in labile PIH than in permanent PIH. Correlation studies of kallikrein disclosed correlations with most prostaglandin excretions, explained by the physiological stimulation of phospholipase A2 by kallidin. Correlation studies of PRA disclosed unexpected negative correlation with PGE2 and 6 keto PGF1 alpha in the permanent PIH group. In conclusion, labile PIH has a different biological profile than permanent PIH since they have higher PRA and higher TXB2 excretion, an association which suggests a more pronounced ureteral compression by the gravid uterus in this group. Permanent PIH has a disregulation of the renin angiotensin-prostacyclin loop since PRA and 6 keto PGF1 are negatively correlated. This suggests the role of an independent vasopressive substance which would stimulate PGI2 and suppress renin secretion. PMID- 3846289 TI - Steric and electronic factors in the reactivity of yeast tRNAPhe. PMID- 3846291 TI - [Children after an extracorporeal circulation procedure]. PMID- 3846290 TI - X-ray studies on the interaction of the anticancer agent cis-[Pt(NH3)2cl2] to tRNAphe. A mechanism for the formation of the intrastrand cross-link to adjacent guanines in DNA. AB - The interaction of the potent anticancer agent cis-[Pt(NH3)2cl2] to phenylalanine tRNA from yeast has been investigated by x-ray crystallography. Two major binding sites were excavated from difference Fourier maps and both showed monodentate binding to guanine bases (G15 and G18) at N7. The expected intrastrand cross linked complex between adjacent guanines was not observed in tRNA. Although both bases G15 and G18 are in the dihydrouridine loop, they are engaged in tertiary base interactions viz. G15-C48 and G18-psi 56. The high C1- ion concentration in the crystal made the reaction sluggish and was perhaps responsible for the formation of only the monodentate complex. This appears to be the initial complex that is formed during the interaction of the Pt drug with DNA, with a subsequent attack of the drug on the N7 of the 5'-side guanine base to generate the expected intrastrand cross-linked product involving adjacent guanines. The wedge-shaped Pt GG complex that is formed perturbs not only the local geometry but also produces a kink or bend in the DNA duplex. PMID- 3846292 TI - [The nurse and the therapeutic environment]. PMID- 3846293 TI - [Health education]. PMID- 3846295 TI - [How much does health cost. 1. What is economics]. PMID- 3846294 TI - [Changes in the profession]. PMID- 3846297 TI - [Evaluate us, patients]. PMID- 3846296 TI - [Medical aspects of stroke]. PMID- 3846298 TI - [Traditional midwives]. PMID- 3846299 TI - [Urolithiasis]. PMID- 3846300 TI - [Anemia in pregnancy, labor and the puerperium]. PMID- 3846301 TI - [What about nursing personnel?]. PMID- 3846302 TI - [Improvement in the basics of health care]. PMID- 3846303 TI - [Community health nurses. An evaluation test]. PMID- 3846304 TI - Symposium on cardiac diseases: advances in prevention, diagnosis, and management. PMID- 3846305 TI - Recent advances in the management of chronic heart failure. AB - A number of newer therapeutic agents are available for the treatment of refractory heart failure. These agents possess either vasodilating, positive inotropic, or combined vasodilating and inotropic properties. In appropriate subsets of patients, these agents have the potential to produce clinical improvement and improvement in cardiac function. PMID- 3846306 TI - Preventive cardiology for coronary artery disease. AB - Primary and secondary risk factors and prevention strategies for coronary artery disease are reviewed. Cigarette smoking, hypertension, dyslipidemia, heredity, diabetes mellitus, obesity, beta blockades, and coronary artery bypass surgery are some of the topics discussed. PMID- 3846307 TI - Familial cardiovascular risk factors: diagnosis and management in the young. AB - Risk factors for the development and progression of coronary atherosclerosis, hypertension, and cerebrovascular diseases are found in more than 10 per cent of children and adolescents in the United States. This article presents the criteria for the diagnosis of three of these risk conditions--dyslipidemia, hypertension, and obesity--and it reviews principles and specifics of their management in young people. PMID- 3846308 TI - Mitral valve prolapse. AB - Mitral valve prolapse, diagnosed by auscultation of typical midsystolic clicks and late systolic murmurs or by echocardiographic demonstration of definite systolic protrusion of the mitral leaflets into the left atrium, is the commonest human abnormality of heart valves, affecting roughly 4 per cent of the population. The most important clinical features of mitral valve prolapse include palpitations and small but definite risks of infective endocarditis or significant mitral regurgitation in middle age, or later. Current evidence suggests that mitral prolapse is due to an inherited abnormality in connective tissue, which causes thoracic bony abnormalities and reduced body weight and blood pressure, in addition to the changes in the mitral valve. PMID- 3846309 TI - Differential diagnosis of chest pain. AB - The article is organized to approximate the process of problem solving that most physicians use to make a diagnosis in patients who complain of chest pain. Initially, the presenting symptom suggests several diagnostic possibilities. Additional, more specific, historic findings, physical findings, and the results of diagnostic studies further define and reduce the initial diagnostic list. PMID- 3846310 TI - Nurse refuses to treat: moral, ethical, legal dilemma. PMID- 3846311 TI - X-ray machine falls on patient: nurses' liability issue. Case in point: Carter v. Anderson Memorial Hosp. (325 S.E. 2d 78--SC). PMID- 3846312 TI - Surgical sponge found 14 yrs, later: nurses sued. Case in point: Melendez v. Beal (683 S.W. 2d 869--TK). PMID- 3846313 TI - An approach to modifying self-report instruments. AB - The Rasch model, a simple latent trait model was applied to responses to a 21 item self-report instrument. Items were assigned values reflective of interval scale measurement. To modify the instrument, items below the calibrated mean were eliminated. The proposed revision contains fewer items with known scale values and only those items that are the strongest indicants of the variable in question. The present work suggests that the Rasch and similar models are useful for increasing the measurement properties of self-report instruments. PMID- 3846314 TI - Parents' beliefs about themselves as parents of a new infant: instrument development. AB - The instrument, What Being the Parent of a New Baby is Like (WPL), was designed to assess parental experiences and self-images which are likely to influence problem-solving concerning their infants. Forty-nine mothers responded to the questionnaire on three separate occasions during the infants' first 3 months. These data were the basis for a preliminary examination of the item characteristics, reliability (internal consistency), and validity. The pattern of responses to the WPL was in the expected direction for a sample of mothers who, on the whole, functioned well as parents. Principal components factor analysis with iteration and varimax orthogonal rotation identified two variables (centrality of the infant and success in parenting) that together accounted for 60.1% of the variance; adequate internal consistency for success and modest internal consistency for centrality were demonstrated. Use of the Neonatal Perception and Degree of Bother Inventories demonstrated divergent validity. Expected parity differences tested the known groups technique of construct validity. The significant relationship between success and a measure of parents' perceptions of their problem-solving skills demonstrated concurrent validity. Further testing of WPL with added items on larger and more heterogeneous samples is warranted. PMID- 3846315 TI - Relationship of health locus of control to lifestyle change programs. AB - The relationship of health locus of control (HLC) scores to changes in physical parameters of 339 participants in a lifestyle change program was examined. Physical parameters included weight, blood pressure, low density lipoproteins, triglycerides, and the ratio between cholesterol and high density lipoproteins. Data were collected on admission and on completion of the 24-day residential program, and at a 6-month followup. There were significant changes in HLC scores (p less than .001) from admission to discharge. Weight changes at 6 months were positively correlated with admission HLC composite scores (p less than .01) and chance dimension (p less than .05) scores. There were negative correlations at 6 months between admission powerful other scores and changes in triglycerides (p less than .01) and changes in the ratio of cholesterol and high density lipids (p less than .01). PMID- 3846316 TI - Predictors of acute confusional states in hospitalized elderly patients. AB - Development of two models for predicting acute confusional states in elderly post surgical hip-fracture patients is described. Admission variables were used in the first model to predict confusion in the first five postoperative days; treatment and clinical progress data were added for the second model to predict on a day-to day basis. The main sample was 170 patients from four hospitals (M age = 78.8) with no prior history of mental impairment. Over half (51.5%) evidenced some confusion postoperatively. Three variables were significant in the admission model: age, errors on a mental status test, and level of pre-injury activity. Age and test errors remained significant in the daily model and urine elimination problems were added, but the strongest predictor was the previous day's confusion score. When that effect was removed, pain, narcotics, and mobility emerged as important predictors. Validity testing suggested that the three admission factors were core predictors of acute confusional states. PMID- 3846317 TI - The influence of discourse on collaboration among nurses, physicians, and consumers. AB - The aim of this study was to determine whether ongoing discussion among nurses, physicians, and consumers influenced their collaborative beliefs and behavior. A stratified experimental sample of 72 professionals and consumers met in small, multidisciplinary groups on a monthly basis for 2 years to discuss health care relationships. Prior to the onset of these groups, and after their conclusion, the experimental sample, a randomly selected control group of 72 persons, and a matched control group of 72 persons all completed the Management of Differences Exercise, the Multidimensional Health Locus of Control Scales, and the Health Role Expectations Index. Contrary to predictions, the experimental group (M = 6.85) declined more than controls (M = -4.63, p less than .05) in their beliefs regarding the value of shared versus physician-dominated responsibility for health care and increased more (M = 1.58 versus M = -.53, p less than .007) in their beliefs that powerful individuals such as physicians influence the consumer's health status. Results indicate that ongoing discourse may have enhanced traditional, status quo beliefs regarding the authority and power of the physician rather than fostering collaborative values. PMID- 3846318 TI - Accuracy of indirect measures of medication compliance in hypertension. AB - The purpose of this study was to identify the most accurate indirect measure of medication compliance in primary hypertension through comparison with a recently developed direct measure of the antihypertensive agent, hydrochlorothiazide. A convenience sample of 40 subjects was seen by the investigator twice in an office setting and once in their homes. Data were collected by an interview schedule, blood pressure measurement, pill counts, urine analysis, and hospital record review. Patient interview was the most sensitive and accurate measure of compliance; this measure correctly classified 85% of patients as to compliant or noncompliant. PMID- 3846319 TI - Child-rearing, marital, recreational and work role integration and climacteric symptoms in midlife women. AB - This study investigated relationships between the roles women enact during midlife and the frequency and severity of symptoms they report at the climacteric. A sample of 185 healthy, middle-aged women completed measures assessing climacteric symptoms, adjustment to the marital role, and degree of participation in child-rearing, recreational, and work roles. Findings indicated that the more roles women enact, the less likely they are to experience climacteric symptoms. Adjustment to the marital role and an active recreational role were the best predictors of infrequent and mild climacteric symptoms. The number of hours worked was negatively related to recreational involvement and marital role adjustment but did not relate to climacteric symptoms. The child rearing role was not related to symptoms. These findings indicate that successful marital adaptation and active role participation may be significantly related to diminished climacteric symptoms formation of midlife women. PMID- 3846321 TI - Continuing education update: chapters where are you? PMID- 3846320 TI - Impact of a husband's chronic illness (COPD) on the spouse's life. AB - This study was conducted to determine the impact of a husband's chronic illness on the spouse's life. The sample was 76 married women, 46 whose husbands had a diagnosis of chronic obstructive pulmonary disease (COPD) and 30 whose husbands did not have a chronic illness. On a mailed questionnaire wives of COPD patients reported higher subjective stress (p = .032) and lower life satisfaction (p = .006) than the wives whose husbands did not have a chronic illness. The COPD wives assumed more new roles and responsibilities, relinquished more social activities, rated their health lower, and reported less frequent marital relations. Implications for future research are addressed. PMID- 3846322 TI - Spasticity: a consideration in rehabilitation of the elderly. PMID- 3846323 TI - The gerontological nurse specialist in rehabilitation settings. PMID- 3846324 TI - Interventions for the elderly amputee. PMID- 3846326 TI - A concept of self-care for the rehabilitation client. PMID- 3846325 TI - Assessing for perceptual clarity: closing the gap between theory and practice. PMID- 3846327 TI - Green dot program. PMID- 3846328 TI - [When the child appears...]. PMID- 3846330 TI - [Suicide]. PMID- 3846329 TI - [State of mind of a nurse]. PMID- 3846331 TI - [Emergencies. Nursing care in a multidisciplinary team]. PMID- 3846332 TI - [Hemiplegia]. PMID- 3846333 TI - [Drugs and pregnancy (1)]. PMID- 3846334 TI - [Shunt and Le Veen valve. Interview by Madeleine Clave]. PMID- 3846335 TI - [Students' opinions on their education]. PMID- 3846336 TI - [Health and life milieu...today]. PMID- 3846337 TI - [Help! Following Marie-France...]. PMID- 3846339 TI - [Abdominal massage: therapy for the control of chronic constipation]. PMID- 3846338 TI - [Help! Do you have a nose...]. PMID- 3846340 TI - [Coordinated program for cardiorespiratory arrest]. PMID- 3846341 TI - [Diet in digestive system diseases. II]. PMID- 3846342 TI - [Transportation of accident victims and medical emergencies]. PMID- 3846343 TI - [Headache]. PMID- 3846344 TI - [Nutrition in a geriatric hospital unit]. PMID- 3846345 TI - [Discussion on specialties]. PMID- 3846346 TI - [Vascular pathology]. PMID- 3846347 TI - Why I'm superstitious about nurse's curses. PMID- 3846348 TI - Can others take over when you take off? PMID- 3846349 TI - Patient's advocate. When you know the doctor is wrong. PMID- 3846350 TI - What to do after CPR: use ABGs to fine-tune resuscitation. PMID- 3846351 TI - RN master care plan. Correcting acid-base imbalance. PMID- 3846352 TI - Emergency! Dealing with drownings. PMID- 3846353 TI - Pumps that bolster a failing heart. PMID- 3846354 TI - What it's really like to work in an ambulatory care center. PMID- 3846355 TI - When the patient has the "other" diabetes. PMID- 3846357 TI - Legally speaking. What you need to pin down a job offer. PMID- 3846356 TI - Making life bearable for your chronic ICU patient. PMID- 3846358 TI - [Xylocaine]. PMID- 3846359 TI - [Bladder catheterization for cytobacteriologic urine analysis]. PMID- 3846360 TI - [Ocular herpes]. PMID- 3846361 TI - [Genital herpes]. PMID- 3846362 TI - [Neonatal herpes simplex infections]. PMID- 3846363 TI - [Zona]. PMID- 3846364 TI - [Varicella]. PMID- 3846365 TI - [Superinfected varicella]. PMID- 3846366 TI - [Reforms in continuing professional education (1)]. PMID- 3846368 TI - [Atarax]. PMID- 3846367 TI - [Class delegates. Round table]. PMID- 3846369 TI - [The pleasure of breaking away or drama activities at Georges Heuyer's]. PMID- 3846370 TI - [Approach to the body through 2 experiences of cosmetology and hair dressing]. PMID- 3846371 TI - [Role of the clinical psychologist in the admission of patients at the Georges Heuyer Clinic]. PMID- 3846372 TI - [The relationship between the nurse's aide and the psychotic adolescent]. PMID- 3846373 TI - [Impressions of a resident who went through there...]. PMID- 3846374 TI - ["I play normal"]. PMID- 3846375 TI - [Detour via philosophy: from the emotional to the rational]. PMID- 3846377 TI - [The writing-photography workshop]. PMID- 3846376 TI - [Reflections apropos of teaching history and geography]. PMID- 3846378 TI - [Place of recreation in the nurse's role at the Georges Heuyer Clinic]. PMID- 3846379 TI - [Tegretol]. PMID- 3846380 TI - [Occupational mental pathology. Situational pseudoneuroses and reactional asthenias]. PMID- 3846382 TI - [Time to work--time to live. Recreation as an antipollutant for the mind]. PMID- 3846381 TI - [Psychopathology of social hypersecurity]. PMID- 3846383 TI - [The health enterprise and the health of enterprises. An introduction to texts on the psychology of work]. PMID- 3846384 TI - [The mental burden of work]. PMID- 3846385 TI - [Dance-therapy at the Georges Heuyer Clinic]. PMID- 3846386 TI - [Psychopathology of work, of unemployment and of retirement]. PMID- 3846387 TI - [Aldactone]. PMID- 3846388 TI - [Treatment of mitral cardiopathies. 2. Indications]. PMID- 3846389 TI - [Treatment of mitral cardiomyopathies. 3. Gynecologic-obstetric prevention and treatment]. PMID- 3846391 TI - [Treatment of mitral cardiomyopathies. 1. Therapeutic modalities]. PMID- 3846390 TI - [Mitral valve cardiopathy. The case of Mrs. M...]. PMID- 3846392 TI - [Relations between the patient care team and the patient's family in the heart of a high-technology unit]. PMID- 3846393 TI - [Mucoviscidosis. African aspects]. PMID- 3846394 TI - [Functional pathology of the bile ducts]. PMID- 3846395 TI - [Biliary lithiasis and its complications]. PMID- 3846396 TI - [The kallikrein-kinin system in chronic respiratory insufficiency]. PMID- 3846397 TI - [From MBO-V (intermediate professional nursing education) to MDGO-Vp (intermediate health service and health care education-nursing). Two administrative officials on intermediate professional education for nursing. Interview by M. Sprengers and A. Versteege]. PMID- 3846398 TI - [Physiotherapy in mental retardation]. PMID- 3846399 TI - [Nursing science: a doctoral program at the Limburg State University in Maastricht]. PMID- 3846400 TI - [The micro-task field and the meso-task field in nursing. Developments in methods and systems of nursing. III]. PMID- 3846401 TI - [This is how patients can feel. The heaven promised to her]. PMID- 3846402 TI - [Professionals and semiprofessionals. Men's and women's affairs]. PMID- 3846403 TI - [Radiation protection and nursing actions]. PMID- 3846404 TI - [Professionalization and cost control. A figurative dilemma]. PMID- 3846405 TI - [Recognition of certificates in the European Community. An account from Brussels IV from the Advisory Committee for education in the field of nursing]. PMID- 3846406 TI - [Medical information for nurses. Risks for the surgical patient]. PMID- 3846407 TI - Decreased urinary active and inactive kallikrein by chronic infusion of vasopressin in conscious rats. AB - To assess possible interactions of circulating vasopressin with the synthesis or activation of renal kallikrein, we studied the effect of chronic infusion of vasopressin (7.2 U/kg/day i.p.) for 6 days on the urinary excretion of total and active kallikrein in conscious rats. We determined urinary total, active and inactive kallikrein by measuring kallikrein activity using a kininogenase assay before and after the treatment with trypsin (200 micrograms/ml). Chronic infusion of vasopressin induced sustained decreases in urinary total, active and inactive kallikrein excretion, but did not affect the ratio of active to total kallikrein. The infusion of vasopressin induced significant increases in circulating levels of vasopressin (248.1 +/- 35.2 pg/ml in vasopressin-infused rats (n = 7) compared to 95.5 +/- 14.6 pg/ml in vehicle-infused rats (n = 7), p less than 0.001) and in weight gain (39.6 +/- 1.3 g in vasopressin-infused rats (n = 7) compared to 29.1 +/- 3.3 g in vehicle-infused rats (n = 7), p less than 0.05), and also sustained decreases in water intake and urine volume, but it did not induce any change in urinary sodium excretion. Circulating levels of angiotensin II was decreased by chronic infusion of vasopressin. Thus, the present study suggests that the elevation of circulating vasopressin levels induces a decrease in the synthesis of renal kallikrein. PMID- 3846408 TI - Femoral-popliteal graft surgery saves limbs. PMID- 3846409 TI - Radiation treatments fight cancer. Endocuritherapy Rx. PMID- 3846410 TI - A diagnostic tool: shoulder joint arthroscopy. PMID- 3846411 TI - O.R. recruits need a hand. PMID- 3846412 TI - What am I doing here? PMID- 3846413 TI - A glimpse of psychiatric nursing in China. PMID- 3846414 TI - CAMC decentralizes nursing services. PMID- 3846415 TI - A case of the caregiver needing care. PMID- 3846416 TI - President's address: "Of caterpillars, butterflies and trees full of stars". PMID- 3846417 TI - Designation of Alberta psychiatric units changes for 1985 or 1986? PMID- 3846418 TI - One concept of geriatric rehabilitation nursing. PMID- 3846420 TI - Sharpening treatment for closed intramedullary nailing. PMID- 3846419 TI - Dr. Kathryn May. Interview by Eve Henderson. PMID- 3846421 TI - Who will become the preferred providers? PMID- 3846422 TI - Hidden depression. PMID- 3846423 TI - Early postpartum discharge. PMID- 3846424 TI - Painful chronicle. PMID- 3846425 TI - A pacemaker primer. PMID- 3846426 TI - Diagnosing nutrition problems. PMID- 3846427 TI - A cancer center's outreach. PMID- 3846428 TI - At issue: titling and licensure. PMID- 3846429 TI - Nosocomial infections among patients in a long-term care facility: spectrum, prevalence, and risk factors. AB - During a 6-month period data were collected on 460 patients residing on the long term care division of this 1200-bed county hospital. The purpose was to determine prevalence and spectrum and to identify risk factors for skin infections, urinary tract infections, respiratory infections, and sepsis. Overall, the prevalence of nosocomial infections among 460 patients was 12%. Patients with infections had an average of 2.8 diagnoses of their underlying disease compared to patients without infections, who only had 1.8 diagnoses. Specific risk factors were identified. Skin infections were more common in patients who were nonambulatory, diabetic, malnourished, and incontinent of urine and feces, whereas respiratory infections were more common in patients who were smokers or had chronic obstructive lung disease and had not received pneumococcal vaccine. Thirteen percent of patients with an indwelling urinary catheter had symptomatic urinary tract infections, whereas 100% had asymptomatic bacteriuria. PMID- 3846430 TI - Surveillance by objective: a new priority-directed approach to the control of nosocomial infections. The National Foundation for Infectious Diseases lecture. PMID- 3846431 TI - An integrated approach to liability. PMID- 3846433 TI - Judge dismisses ANA/INA wage suit. PMID- 3846434 TI - Occupational health groups seek licensure in 26 states. PMID- 3846432 TI - Commission rejects comparable worth, blames socialization. PMID- 3846435 TI - Nurse uses news media to tell nation about nursing research. PMID- 3846436 TI - Important issues await delegates meeting in July. PMID- 3846438 TI - Proposed amendments to the ANA bylaws. PMID- 3846437 TI - Certification allows nurses to show their competence. PMID- 3846439 TI - Pulmonary elastase activity in response to Streptococcus pneumoniae and Pseudomonas aeruginosa. AB - Elastase activity generated during lung defense against aerobic bacteria was studied in an animal model. Bronchoalveolar lavage (BAL) fluid from hamsters inoculated with bacteria was assayed for elastase activity at 0, 2, 4, 6, and 8 h after inoculation using a synthetic substrate of elastase, succinyl-trialanine nitroanilide (SLAPN). Streptococcus pneumoniae type 25 inoculation led to a peak elastase activity of 0.72 +/- 0.27 X 10(-3) units, not significantly different from baseline (0.41 +/- 0.08 X 10(-3) units) or saline control (0.33 +/- 0.18 X 10(-3) units). In contrast, inoculation with Pseudomonas aeruginosa strain PAO-1 (a species known to produce elastase as well as other virulence factors) produced peak elastase activity of 3.0 +/- 1.2 X 10(-3) units in BAL fluid, significantly higher than either pneumococcus type 25 or saline control (p less than 0.025). Inoculation with Pseudomonas aeruginosa strain E-64, an isogenic mutant of PAO-1 that produces a nonfunctional elastase, led to peak levels similar to the PAO-1 strain, suggesting that the presence of bacterial elastase was not the primary factor in BAL fluid elastase activity. Total numbers of granulocytes in BAL fluid from pneumococcus-inoculated animals (144 +/- 31 X 10(6] was significantly higher (p less than 0.05) than from either the PAO-1 (74 +/- 31 X 10(6] or E-64 (99 +/- 27 X 10(6] strains of Pseudomonas, Use of selective enzyme inhibitors of elastase, diisopropyl fluorophosphate and disodium ethylenediaminetetraacetate, implied that the majority of elastase activity in BAL fluid was due to a serine protease, of which granulocyte elastase is the primary source.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3846440 TI - The wellness model. Feeling good about you. PMID- 3846441 TI - Managing stress in the OR. A collaborative approach. PMID- 3846442 TI - Alcohol abuse. One nurse's personal battle. PMID- 3846443 TI - Home study program. The biological process of rejection and immunosuppression. PMID- 3846444 TI - Organ graft rejection. The biological process. PMID- 3846445 TI - A caring approach to the pediatric myringotomy patient. PMID- 3846446 TI - Libraries offer lifelong learning. Interview by Kathleen Justice. PMID- 3846447 TI - A tutorial on the AN 69 polyacrylonitrile membrane. PMID- 3846448 TI - An introduction to physical assessment for the nephrology nurse. PMID- 3846449 TI - Continuous arteriovenous hemofiltration: an alternative to standard hemodialysis in unstable patients. PMID- 3846450 TI - An investigation of the relationship between social support and compliance of hemodialysis patients. PMID- 3846451 TI - Nephrology nursing consult: case study. Pancytopenia. PMID- 3846452 TI - Why pediatric nephrology nursing? PMID- 3846453 TI - The effects of vanadate on rabbit ventricular muscle adenylate cyclase and sodium pump activities. AB - Vanadate in the +5 oxidation state has been reported to have a positive inotropic action on cardiac ventricular muscle. We have investigated the biochemical actions of vanadate on ventricular muscle adenylate cyclase and sodium pump activities in both intact or disrupted cell systems in an attempt to elucidate the mechanism(s) responsible for the physiological response. Vanadate at concentrations up to 100 microM (Ka = 2 microM) stimulated adenylate cyclase activity in sarcolemmal membrane preparations or disrupted myocytes isolated from rabbit ventricular muscle by 2-3-fold. Increasing the vanadate concentrations above 100 microM resulted in a progressive inhibition of basal or hormone stimulated adenylate cyclase activity (Ki = 5 mM) which was similar to that found by the reaction product, pyrophosphate (Ki = 0.5 mM). Both activation and inhibition by vanadate was fully reversible. Maximum activation of adenylate cyclase by vanadate and isoprenaline were not additive whereas maximum fluoride activation was decreased (18%) and the forskolin-stimulated response was slightly potentiated. Vanadate reversibly inhibited ouabain-sensitive p nitrophenylphosphatase activity (Ki = 60 nM) in sarcolemmal membrane preparations and disrupted myocytes. Complete inactivation was found at 1 microM vanadate. Acute or chronic incubation of intact myocytes with vanadate at concentrations up to 0.5 mM had no measurable affect on ouabain-sensitive 86Rb influx or isobutylmethylxanthine, isoprenaline or forskolin-stimulated accumulation of intracellular cAMP concentration. Inhibition of 86Rb influx and cAMP accumulation was found at higher concentrations of vanadate; however, this accompanied the progressive decrease in cell viability as measured by the decrease in percentage of rod-shaped cells. It is concluded that vanadate, at concentrations which have been reported to induce a positive inotropic action on mammalian ventricular muscle, does not increase adenylate cyclase activity or inhibit the sodium pump activity in intact myocytes. These results show that caution must be applied when extrapolating the actions found with vanadate in broken cell systems to intact tissues. PMID- 3846454 TI - Effects of lysophosphatidic acids and their structural analogs on arterial blood pressure of cats. AB - On intravenous injection into cats, lysophosphatidic acid elicited a biphasic change in arterial blood pressure: sharp hypotension followed immediately by hypertension. Respiration was greatly disturbed immediately after injection of lysophosphatidic acid, and remained stimulated for a long period, and the heart rate increased during the period of hypertension. Unsaturated lysophosphatidic acids were more potent in evoking hypertension than saturated ones. The hypotensive activity of 1-palmitoyl-2-0-acetyl-sn-glycero-3-phosphate was about half that of 1-palmitoyl-2-lyso-sn-glycero-3-phosphate (lysophosphatidic acid). Elongation of the acyl chain at the sn-2-position of the glycerol moiety resulted in progressive reduction in the hypotensive activity. Chemically modified analogs with a head group, such as phosphoryl-methanol, ethanol, propanol and choline, had little or no activity. However, sn-2-acetyl-analogs of lyso-phosphatidyl cholines had hypotensive activity. 1-0-Hexadecyl-2-lyso-sn-glycero-3-phosphate, an alkyl-lyso-phosphatidic acid, had much stronger hypotensive activity than the corresponding acyl-lysophosphatidic acid, like its sn-2-0-acetyl analog. These structure-activity relationships of lysophosphatidic acids indicate the existence of their specific binding sites on cardiovascular cells. PMID- 3846455 TI - Cross-linking of actin to myosin subfragment 1: course of reaction and stoichiometry of products. AB - The cross-linking of actin to myosin subfragment 1 (S-1) with 1-ethyl-3-[3 (dimethyl-amino)propyl]carbodiimide was reexamined by using two cross-linking procedures [Mornet, D., Bertrand, R., Pantel, P., Audemard, E., & Kassab, R. (1981) Nature (London) 292, 301-306; Sutoh, K. (1983) Biochemistry 22, 1579-1585] and two independent methods for quantitating the reaction products. In the first approach, the cross-linked acto-S-1 complexes were cleaved with elastase at the 25K/50K and 50K/22K junctions in S-1. This enabled direct measurements of the cross-linked and un-cross-linked fractions of the 50K and 22K fragments of S-1. We found that in all cases actin was preferentially cross-linked to the 22K fragment and that the overall stoichiometry of the main cross-linked products was that of a 1:1 complex of actin and S-1. In the second approach, actin was cross linked to tryptically cleaved S-1, and the course of these reactions was monitored by measuring the decay of the free 50K and 20K fragments and the formation of cross-linked products. After selecting the optimal cross-linking procedure and conditions, we determined that the rate of actin cross-linking to the 20K fragment of S-1 was 3-fold faster than the reaction with the 50K peptide. The overall rate of cross-linking actin to S-1 corresponded to the sum of the individual reactions of the 50K and 20K fragments, indicating their mutually exclusive cross-linking to actin. Thus, the reactions with tryptically cleaved S 1 were consistent with the 1:1 stoichiometry of actin and S-1 in the main cross linked products and verified the preferential cross-linking of actin to the 20K fragment of S-1. These results are discussed in the context of the binding of actin to S-1. PMID- 3846456 TI - Aminoacylation of anticodon loop substituted yeast tyrosine transfer RNA. AB - A procedure for replacing residues 33-35 in the anticodon loop of yeast tRNATyr with any desired oligonucleotide has been developed. The three residues were removed by partial ribonuclease A digestion. An oligonucleotide was inserted into the gap in four steps by using RNA ligase, polynucleotide kinase, and pseT 1 polynucleotide kinase. The rate of aminoacylation of anticodon loop substituted tRNATyr by yeast tyrosyl-tRNA synthetase was found to depend upon the sequence of the oligonucleotide inserted. This suggests that the nucleotides in the anticodon loop of yeast tRNATyr are required for optimal aminoacylation. In addition, tRNATyr modified to have a phenylalanine anticodon was shown to be misacylated by yeast phenylalanyl-tRNA synthetase at a rate at least 10 times faster than unmodified tRNATyr. Thus, the anticodon is used by phenylalanyl-tRNA synthetase to distinguish between tRNAs. PMID- 3846457 TI - Studies on platelet surface carbohydrates in normal and uraemic platelets using 125I-labelled lectins. AB - Binding studies with six different purified 125I-labelled lectins, concanavalin A (con A), wheat germ agglutinin (WGA), Ricinus communis agglutinin II (RCA II), Dolichos biflorus (DB), Tetranolobus purpureus (TP) and P-phyto-hemagglutinin (P PHA), were used to investigate the surface topography of carbohydrates in platelets from uraemic and normal subjects. Compared with normal the uraemic platelets, bear significantly decreased (more than 2.5-fold) numbers of receptors for P-PHA (N-acetyl D-galactosamine specificity) and Con A (specificity glucose, mannose). The number of WGA, RCA, II, DB and TP receptors in uraemic platelets did not differ from the number in normal platelets. Binding studies with 125I labelled lectins provide further evidence of molecular defects in uraemic platelets. Moreover, this method might provide a fast and reliable technique for identifying abnormalities in the surface topography of carbohydrates on platelets in several pathological states. PMID- 3846458 TI - Hairy cell leukemia associated with carcinoma: report of two patients and review of the literature. AB - The association of carcinoma and hairy cell leukemia (HCL) in two patients is recorded. One of the cases was a 58-year-old male who developed carcinoma of the kidney, while the second patient was a 48-year-old woman with carcinoma in the breast. This rare association is probably coincidental, as it is not described in most of the larger reported series of patients with HCL. It is of interest to note that the first patient had received radiation therapy thirty years before the diagnosis of HCL and carcinoma was made. PMID- 3846459 TI - Protein C antigen in prothrombin complex concentrates: content, recovery and half life. AB - Protein C, a potent anticoagulant, has been detected in large amounts in some prothrombin complex concentrates (PCC). We extended these findings to eight PCC commercially available in West Germany detecting 0.82 to 1.92 plasma equivalent units of protein C antigen (PC:Ag) per unit factor IX. Infusion of PCC in four patients on stable oral anticoagulation resulted in a recovery of 58.6 +/- 10.9%. Estimated from the decrease in plasma levels of PC:Ag half life was 7.9 +/- 0.6 h. PMID- 3846460 TI - Assessment of elastase-induced structural and functional changes in sheep lungs. AB - A large-animal model of elastase-induced emphysema is being developed, which permits the evaluation of corresponding changes in lung structure and function under controlled conditions. Varying doses of elastase were instilled intrabronchially into the lower right lobes of 12 sheep. Changes in regional distribution of lung perfusion (Q) and ventilation (V), corrected for lung volume, were determined from in vivo measurements with radioactive Tc-99m MAA, Kr 81m and Xe-127, respectively, before and four weeks after elastase treatment. Lung injury was assessed by histological examinations of tissue removed post mortem. A positive correlation (r = 0.74; p less than 0.01) was observed between the dose of instilled elastase (range: 800-8,000 units) and a reduction in Q. A decrease in Q also correlated significantly (r = 0.63; p less than 0.05) with an increase in alveolar mean linear intercept (Lm). V also decreased with increasing dose of elastase and with increasing Lm, but the results did not attain statistical significance. These results suggest that computer analysis of regional Q and V by radionuclide imaging techniques represents a reliable, sensitive and non-invasive means of assessing elastase-induced pulmonary injury in the sheep. PMID- 3846461 TI - Pesticide poisoning: a California problem. PMID- 3846462 TI - Health care for all by the year 2000. PMID- 3846463 TI - How to rate the class you take. 2. PMID- 3846464 TI - Protecting our elderly. PMID- 3846465 TI - Ethical decision-making. Keeping track of acuity. PMID- 3846466 TI - Ethical decision-making. Principles: veracity and confidentiality. PMID- 3846467 TI - Keeping pace with the job. PMID- 3846468 TI - Geriatric care in Sweden. Interview by Yvonne Baginski. PMID- 3846469 TI - Life began at 55. PMID- 3846470 TI - Ethical decision making. Opening the door to ethical discussion. PMID- 3846471 TI - Ethical decision-making: the principle of utility. PMID- 3846472 TI - Nursing's public image: what they see versus what you know. PMID- 3846473 TI - The time is ripe. PMID- 3846474 TI - Agoraphobia. PMID- 3846475 TI - Specializing in nursing: some Canadian issues. PMID- 3846477 TI - Using kardex cards to improve the quality of patient care. PMID- 3846476 TI - Specialization and certification: a review of CNA's activities. PMID- 3846478 TI - Infertile couples: alone in a crowd. PMID- 3846479 TI - Waiting. Waiting. Waiting. The 'patient' experience. PMID- 3846480 TI - A new role for community nurses in geriatric care. PMID- 3846481 TI - You and the law. 'But I'm allergic to penicillin'. PMID- 3846482 TI - Nursing care of patients treated with intrapleural tetracycline for control of malignant pleural effusion. PMID- 3846483 TI - The role of the nurse in the early detection of cervical carcinoma in a developing country. PMID- 3846484 TI - Radiation therapy and nurses' fears of radiation exposure. PMID- 3846485 TI - Malpractice crisis continues--Part one. Cancer nursing and the law. PMID- 3846486 TI - Primary nursing in childhood cancer as applied in Israel. PMID- 3846487 TI - Choosing a school. PMID- 3846488 TI - Putting education in perspective. PMID- 3846489 TI - Adjusting to academia: hints for RN's returning to school. PMID- 3846490 TI - Leukocyte complement: interleukin-like properties of factor Bb. AB - It has been previously shown that the activated form of Factor B (Factor Bb) of the alternative pathway of complement activation stimulates monocyte spreading and killing of xenogenic erythrocytes and staphylococci. Factor Bb also stimulates lymphocyte blastogenesis in vitro, and native (uncleaved) Factor B is a major constitutive product of murine macrophages. To evaluate the possible "monokine" or "lymphokine"-like properties of Factor Bb, a radioimmunoassay was developed to measure the quantities of Factor B in phytohemagglutinin (PHA) mitogen-stimulated cultures of human peripheral blood mononuclear cells. Nonstimulated mononuclear cell cultures from human peripheral blood (containing 10-14% monocytes and greater than 85% lymphocytes) at a density of 3 X 10(6) cells/ml (in serum-free medium) released less than 7 X 10(-10) M/liter (60 ng/ml) of Factor B antigen in 24 hr at 37 degrees C, and when mononuclear cells were stimulated with PHA mitogen in serum-free medium, the levels of Factor B antigen in media at 24 hr were significantly higher 1-3 X 10(-8) M/liter (0.9-2.8 micrograms/ml). The molecular size of Factor B in these media was 50-65 kDa by immunoprecipitation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis, a size appropriate for Factor Bb (60 kDa). Since pathological effects of macrophages in autoimmune disease may result from the release of lysosomal hydrolases, the effects of purified Factor Bb on mononuclear phagocytes were investigated in an in vitro system of murine peritoneal exudate macrophages. Factor Bb induced secretion of marker lysosomal hydrolases N-acetyl-beta-D glucosaminidase (hexosaminidase) and beta-glucuronidase from thioglycollate elicited murine peritoneal exudate macrophages in a dose-response and kinetic manner. Hydrolase release was induced in serum-free medium without a known particulate activator at a concentration of 80-200 nM (5-13 micrograms/ml) Factor Bb. Maximal release occurred in 3-5 hr at 37 degrees C and extracellular enzyme activity of hexosaminidase and glucuronidase increased as intracellular enzyme levels decreased, suggesting that Factor Bb triggers release of these enzymes from intracellular lysosomal pools. These results provide an example of a complement protein which is synthesized, released, and activated during mononuclear cell culture and which induces release of lysosomal enzymes from macrophages. In conventional terminology, Factor B or Factor Bb might be termed a "lymphokine," "monokine," or "interleukin". PMID- 3846491 TI - Guideline for pediatric dosing. PMID- 3846492 TI - [Supervision on midwives in the rural areas]. PMID- 3846493 TI - [Meticulous care for patients after cesarean section]. PMID- 3846494 TI - [Experience in the care of a patient with locked-in syndrome]. PMID- 3846496 TI - [Pre- and postoperative care of patients with scoliosis]. PMID- 3846497 TI - [Nursing of patients undergoing transplantation of the pedicled greater omentum to the brain]. PMID- 3846495 TI - [Mini-catheters for guiding intravenous infusion in patients with acute myocardial infarction]. PMID- 3846498 TI - [Psychological care of the pregnant woman]. PMID- 3846499 TI - [Intensive care unit in neonatal nursing]. PMID- 3846500 TI - [Evaluation of nursing quality]. PMID- 3846501 TI - [Proper time for breast feeding of neonates]. PMID- 3846502 TI - [The quality of emergency treatment]. PMID- 3846503 TI - [Nursing of patients with chlordimeform poisoning]. PMID- 3846504 TI - [Nursing of sick children according to their psychological characteristics]. PMID- 3846505 TI - [Maternal love for hospitalized children]. PMID- 3846506 TI - [Nursing of neonates with cerebral hemorrhage]. PMID- 3846507 TI - [Care of patients having a tibial lengthening operation]. PMID- 3846508 TI - [Care of the patients undergoing a one-stage femoral lengthening operation]. PMID- 3846509 TI - [Scrub nurse's experience in the Neurosurgical Department]. PMID- 3846510 TI - [Antitumor technics in the Oncology Department]. PMID- 3846512 TI - [Chair-side assistance from dental nurses]. PMID- 3846511 TI - [Nursing of patients after regenerative bladder resection]. PMID- 3846513 TI - [On the dead cavity of syringe]. PMID- 3846514 TI - Purification and some properties of a trypsin inhibitor from carp (Cyprinus carpio) muscle. AB - A trypsin inhibitor was purified from carp muscle to apparent homogeneity by the successive chromatographies of DEAE-cellulose, DEAE-Sepharose CL-6B, Con A Sepharose, Ultrogel AcA 44 and hydroxylapatite. The mol. wt of the inhibitor was estimated to be 58,000 by SDS-polyacrylamide gel electrophoresis or 50,000 by gel filtration. The inhibitor seemed to form a 1:1 stoichiometric complex with trypsin, alpha-chymotrypsin and elastase, respectively. Carp muscle trypsin inhibitor was likely to be identical with serum alpha 1-proteinase inhibitor judging from its glycoprotein nature, mol. wt and the inhibition stoichiometry. PMID- 3846515 TI - [Definition of psychiatric medicine--establishment of scientific psychiatric medicine (1)]. PMID- 3846516 TI - [Significance of verbal interaction in the nursing scene--speech rehabilitation training and nursing]. PMID- 3846517 TI - [Psychocybernetics and nursing--in search of a meaningful encounter with the patient]. PMID- 3846518 TI - [Care and human being. 3. Care of silent creatures--a view of a veterinarian]. PMID- 3846519 TI - [Reflection on the interactions with an alcoholic leprosy patient: a report and discussion]. PMID- 3846521 TI - School nursing. The day they made contact. PMID- 3846520 TI - Mastectomy. Reclaiming a body image. PMID- 3846522 TI - Infant care. Frustration and despair. PMID- 3846523 TI - Welfare benefits. French lessons. PMID- 3846524 TI - Nursing supplies. Are you being served? PMID- 3846525 TI - Bard Nursing Award. Marrying the team. PMID- 3846526 TI - A blueprint for liaison. PMID- 3846527 TI - On the road. Don't blow your gasket. PMID- 3846528 TI - Matters for concern. Look to your laurels. PMID- 3846529 TI - Health records and nursing. PMID- 3846530 TI - Testimony to the Public Health Committee concerning "An act restoring powers and duties to certain professional licensing boards". PMID- 3846531 TI - Physiological activity of pulmonary surfactant with low protein content: effect of enrichment with synthetic phospholipids. AB - A natural surfactant with low protein content (1%) was prepared by a sequence of cold centrifugation, heating to 90 degrees C, sucrose-gradient centrifugation, and extraction with chloroform:methanol. Some of the material was enriched with dipalmitoylphosphatidylcholine (DPPC) and unsaturated phosphatidylglycerol (PG) to relative concentrations of 56% and 10%, respectively. The in vitro physical properties of these preparations were evaluated with pulsating bubble and Wilhelmy balance and their in vivo activity with experiments on artificially ventilated premature newborn rabbits, delivered on day 27 of gestation. The animals were kept in body plethysmographs at 37 degrees C and ventilated artificially with a standardized sequence of insufflation pressures: 25, 20, and 15 cm H2O. The lungs were fixed by vascular perfusion and the alveolar expansion evaluated morphometrically in histologic sections. Enrichment of surfactant with DPPC and PG resulted in lower minimal surface tension during surface compression but did not further improve lung compliance or the alveolar expansion pattern. Treatment with nonenriched surfactant at a phospholipid concentration of 100 mg/ml (individual dose = 200 mg/kg) caused a markedly increased lung compliance at all insufflation pressure levels (p vs. controls less than .01). Our data indicate that pulmonary surfactant remains physiologically active after removal of most of its protein components and that enrichment with DPPC and PG reduces the in vitro minimal surface tension without adding to the in vivo efficacy. PMID- 3846532 TI - Complete amino acid sequence of bovine plasminogen. Comparison with human plasminogen. AB - The amino acid sequence of the single polypeptide chain of bovine plasminogen (786 residues, Mr 88092) was determined. Cleavage with CNBr yielded 13 fragments of which six originated from cleavage sites different from human plasminogen. Digestion with elastase gave three major fragments: kringles (1 + 2 + 3) and kringle 4, both with intact lysine binding sites, and mini-plasminogen. Subfragmentation was achieved mainly with 2-(2-nitrophenylsulfenyl)-3-methyl-3' bromoindolenine (BNPS-skatole), Staphylococcus aureus V8 protease and trypsin. The sequences of fragments which were determined by automated Edman degradation, were aligned with overlapping sequences, or, in a few instances, by homology with the known sequence of human plasminogen. Sequence comparison with the human protein showed varying degrees of homology in the different functional and structural domains. The overall identity (78%) is practically the same as that found in those regions corresponding to the heavy (79%) and the light chain (80%) of plasmin. The average degree of identity among the kringles is 83%. Outside the kringle structures the extent of identity decreases, to 65% in the N-terminal region and to about 50% in the connecting strands between the kringles except for the strand between kringles 2 and 3, where only one out of 12 residues is exchanged. The results reported show that bovine plasminogen apparently contains the same structural and functional domains as human plasminogen. Bovine plasminogen also contains two carbohydrate moieties. The only partially substituted N-glycosidic site, Asn289, corresponds to partially glycosylated Asn288 in human plasminogen, whereas the O-glycosidic site of the human sequence, Thr345, is shifted to Ser339 in bovine plasminogen. PMID- 3846533 TI - Determination of the complete amino-acid sequence of porcine miniplasminogen. AB - The complete amino acid sequence of porcine miniplasminogen (Mr 37 600), comprising 341 residues, was determined by automated Edman degradation in a liquid-phase or solid-phase sequenator. Selected fragments were produced by cleavage with 2-(2-nitrophenylsulfenyl)-3-methyl-3'-bromoindolenine (BNPS skatole), cyanogen bromide, hydroxylamine, Staphylococcus aureus protease or trypsin or with combinations thereof and by activation with urokinase. The sequence obtained was compared with the known sequences of human and bovine miniplasminogen, indicating that the porcine molecule apparently contains the same structural and functional domains as the protein of the other two species. Porcine miniplasminogen has a sequence homology of 83% with human and of 79% with bovine miniplasminogen; 74% of the amino acids are identical in all three species. The results show a higher degree of evolutionary conservatism in the structurally and/or functionally vital regions of the molecule (active site residues, kringle 5). PMID- 3846534 TI - Ascaris suum: biosynthesis and isoinhibitor profile of chymotrypsin/elastase isoinhibitors. AB - Chymotrypsin/elastase isoinhibitors were radiolabeled when live, adult Ascaris suum were incubated in tissue culture medium (NCTC-135) supplemented with L [35S]cysteine. This is the first demonstration that the synthesis of these proteins occurs in A. suum; the isoinhibitors are not host products utilized by the parasite against its host. Of five chymotrypsin/elastase isoinhibitors demonstrable in A. suum, only isoinhibitors 1, 4, and 5 were found in each worm. The amino acid sequences of these three isoinhibitors indicate that they are gene products and are not obtained by modification after translation. The two inhibitors that are not observed could arise by limited proteolysis. The same chymotrypsin/elastase isoinhibitor profile present in each nematode eliminates any speculation that the multiple forms arise from an adaptation between A. suum and its host. A new chymotrypsin/elastase isoinhibitor nomenclature is proposed, so that isoinhibitor 1 is now Isoinhibitor A, and isoinhibitors 4 and 5 are now Isoinhibitors B and C, respectively. PMID- 3846535 TI - Proteolytic inactivation of human leukocyte elastase. AB - Human leukocyte elastase can be proteolytically inactivated by bovine pancreatic trypsin. Neither porcine pancreatic elastase nor bovine pancreatic chymotrypsin causes inactivation of leukocyte elastase, nor are trypsin, pancreatic elastase, or chymotrypsin themselves susceptible to proteolysis. The trypsin-catalyzed inactivation of leukocyte elastase can be slowed by inhibition of trypsin with benzamidine or by occupation of elastase's active site with elastatinal. PMID- 3846536 TI - The eye of the venomous marine teleost Trachinus vipera with special reference to the structure and ultrastructure of visual cells and pigment epithelium. AB - The benthic Trachinus vipera occurs to a depth of 50 m and migrates inshore during the summer. It lies buried in the sand with the top of its head exposed. The benthic habitat and predatory behaviour, tuned to function in twilight, are reflected in the structure and ultrastructure of the eye. The eye is well camouflaged by an iridescent cornea and a differentially coloured spectacle. The spontaneous eye movements are either coordinated, for binocularity, or independent, for monocular vision. The latter is aided by the reduction of the blind spot to a thin streak. Consequently the optic nerve is flattened. When leaving the eyeball it becomes folded, which may allow for lengthening. The cones of the duplex retina are arranged in a square mosaic, with a central single cone and identical twin cones. The square mosaic is stabilized by an intricate framework of so-called "fins", and the twin cones do not "twist" into a row pattern in the dark as observed in the diurnal guppy. The twin cones do not extend sclerally in the dark, while the single cones, rods and pigment epithelial processes undergo retinomotor movements. Regional differences are observed: The sensitivity of the dorsal retina is enhanced by a great number of rods, bundled as in deep-sea fish. The lipid granules in the dorsal pigment epithelium may act as a tapetum lucidum, reflecting light back through the retina. A cluster of triple cones in the dorso-temporal region may represent a site for increased sensitivity and/or acute vision. An unusual inclusion body, with a dense core similar to a lipid droplet, and surrounded by membranes, is observed in the dorsal pigment epithelium. The membranes are seen to be continuous with the smooth endoplasmic reticulum, nuclear membrane and myeloid bodies. This body changes diurnally and may be a type of phagosome. PMID- 3846537 TI - Increased tolerance to cold induced by hyperoxia in hypothermic dogs. AB - In dogs acutely immersed in cold water (8-13 degrees C) oxygen uptake increased and rapidly reached a maximum value (CV02 Max). A few minutes after the start of immersion colonic temperature began to fall more or less rapidly depending on the dog but always in a linear fashion. Twenty min. after the start of immersion the inspired air was switched from air to a 60% O2/40% N2 gas mixture. The switch to the hyperoxia gas mixture slowed down or even stopped the fall in colonic temperature. Concomitantly a lowering of plasma lactate concentration was observed. It may be concluded that hyperoxia improves the cold tolerance of dogs exposed to a severe cold stress. This improvement may be due to a direct effect of hyperoxia on cellular metabolism. However other effects induced by hyperoxia cannot be ruled out. PMID- 3846538 TI - [Current anesthesia methods in labor and obstetrical operations]. PMID- 3846539 TI - [Diagnosis of bronchial asthma]. PMID- 3846541 TI - [Point massage]. PMID- 3846542 TI - [Medical and health support for the rural population during field work]. PMID- 3846540 TI - [Stenocardia in middle and old age]. PMID- 3846543 TI - [Changes in the oral cavity in internal diseases]. PMID- 3846545 TI - [Health education in the prevention of mycoses]. PMID- 3846544 TI - [Hemosorption]. PMID- 3846546 TI - [Prevention of complications in catheterization of the subclavian vein]. PMID- 3846547 TI - [Rabies]. PMID- 3846548 TI - Helping the impaired nurse--a step in the right direction. PMID- 3846549 TI - Autonomy through collective bargaining. PMID- 3846550 TI - "Who protects my license"? PMID- 3846551 TI - Mentoring: the "old/new" relationship. PMID- 3846552 TI - Hospital cost containment in Florida. PMID- 3846553 TI - Prevention revisited: can public health nursing seize the moment. PMID- 3846554 TI - The importance of family dynamics in community nursing. PMID- 3846555 TI - Blood pressure study in adolescents. PMID- 3846556 TI - The amateur accountant. PMID- 3846557 TI - Counsel and care. PMID- 3846558 TI - A revolution in wound care? PMID- 3846559 TI - The positive approach. PMID- 3846560 TI - 'This malodorous malady'. PMID- 3846561 TI - Knowledge utilization and research utilization in nursing. PMID- 3846562 TI - Research utilization: defining the concept. PMID- 3846563 TI - Debunking myths in nursing theory and research. PMID- 3846564 TI - Study of factors associated with psychological well-being in rheumatoid arthritic women. PMID- 3846565 TI - Secondary data analysis--a new approach to nursing research. PMID- 3846566 TI - Nursing research and social control: alternative models of science that emphasize understanding and emancipation. PMID- 3846567 TI - Specificity of substrate analogue inhibitors of human urinary kallikrein. AB - A series of acetyl-peptidyl-amides containing the amino acid sequence around the Arg-Ser kallikrein cleavage site of bovine kininogen were synthesized and tested for their ability to inhibit both the kinin-releasing activity and the amidase activity of purified human urinary kallikrein. The substrate analogues were competitive inhibitors for human urinary kallikrein and the heptapeptides (P4 P3'), hexapeptides (P3-P3'), and pentapeptides (P2-P3') gave Ki values of 140, 64, and 18 microM respectively, while the tetrapeptides (P1-P3'), tripeptides (P1'-P3') and dipeptides (P2'-P3') had little or no inhibitory activity. The effective analogues had neither kinin-like nor kinin-blocking activity on the rat uterus either before or after exposure to human urinary kallikrein. The effective human urinary kallikrein inhibitors were further examined for their effect on other serine proteases, including human plasma kallikrein, plasmin, complement components (C1s, C1r), bovine coagulation factors (IIa, IXa, and Xa), elastase, and trypsin. These peptides showed little inhibition of the circulating serine proteases but yielded a Ki for the nonspecific protease trypsin in the microM range. These results should provide the basis for the development of highly specific tissue kallikrein inhibitors to aid in elucidating the in vivo role(s) of tissue kallikreins. PMID- 3846568 TI - [Accidents in local and loco-regional anesthesia]. PMID- 3846569 TI - [Behavior disorders in the elderly]. PMID- 3846570 TI - [Personalized reflections on nursing education in psychiatric services]. PMID- 3846572 TI - [Ethiopia: the greatest famine of the century]. PMID- 3846573 TI - [Marriage contracts]. PMID- 3846574 TI - [Complications of venous insufficiency of the lower limbs]. PMID- 3846571 TI - [Hygiene in children]. PMID- 3846575 TI - [Parkinson syndromes]. PMID- 3846576 TI - [Medical aspects of sports]. PMID- 3846577 TI - [Coronary insufficiency in aged subjects]. PMID- 3846578 TI - [Complications of diabetes]. PMID- 3846579 TI - [Agoraphobia]. PMID- 3846580 TI - [Specialization and certification: retrospective of the activities of the CNA (Canadian Nurses Association)]. PMID- 3846582 TI - Should pregnant women care for AIDS patients? PMID- 3846581 TI - [Infection prevention in hospitals. 4. Disinfection and sterilization of instruments]. PMID- 3846583 TI - Shuffling our streptococcal strategies: in-hospital and out. PMID- 3846584 TI - Influence of chlorhexidine in ethanol and in isopropanol on the bacterial colonization of the umbilicus of newborns. AB - The effect of daily treatment with 0.5% chlorhexidine in 70% ethanol and in 70% isopropanol, respectively, on navel colonization and on rates of infection in newborns has been studied in 438 infants in two maternity wards during a 3-month period. In spite of isopropanol being reported as a more efficient skin disinfectant than ethanol in several experimental models, no significant differences were seen in the frequency of navel colonization or in infection rates between the two treatment groups. The colonization rate with S. aureus was lower in this than in an earlier investigation on navel disinfection with chlorhexidine in ethanol performed in the same wards. This may reflect a progressive effectiveness of the treatment due to fewer S. aureus sources in the nursery. For practical reasons we continue to recommend daily navel disinfection with 0.5% chlorhexidine in 70% ethanol on healthy newborns in hospital nurseries. PMID- 3846585 TI - The efficacy of antibiotic prophylaxis in the prevention of post-cesarean section endometritis. AB - Endometritis is an infectious complication in 9% to 65% of patients delivered by cesarean section. The risk of developing endometritis is greater in the high-risk emergent patient as compared to routine repeat abdominal deliveries. This study describes the incidence of endometritis following cesarean section delivery in different patient groups at the University of Virginia Hospital during a 1-year period and reviews the literature on the efficacy and risks of prophylactic antibiotics in this setting. Of patients not receiving antibiotic prophylaxis, 11 (less than 1%) of 1,461 normal spontaneous vaginal delivery patients, 7 (16.7%) of 42 repeat and 39 (29.8%) of 131 emergent cesarean section patients developed endometritis. This contrasts to none of the 24 emergent patients who received antibiotic prophylaxis. The literature review shows multiple prospective well designed and executed studies that demonstrate reliable decreases in the incidence of endometritis with short course antibiotic prophylaxis. Our conclusion is that short course antibiotic prophylaxis is a safe, reproducible, cost-effective and indicated method of reducing the incidence of this costly and serious postoperative infection. PMID- 3846586 TI - Multiple-dose vials: persistence of bacterial contaminants and infection control implications. AB - Due to sporadic infections attributed to contaminated multiple-dose medication vials (MDV), some authorities have suggested discarding all MDV within 24 hours. We inoculated 11 commonly used medications with suspensions of 10 bacterial species previously associated with contaminated parenteral solutions and determined microbial persistence at both room and refrigerator temperature. At 22 degrees C, atropine, curare, folic acid, NPH insulin and triamcinolone did not allow microbial persistence beyond 4 hours. Lidocaine and heparin were sterile by 24 hours. Regular insulin, immune serum globulin, and myochrysine allowed persistence for up to 7 days. At 4 degrees C, bacterial persistence was significantly prolonged for all medications including those MDV requiring refrigeration. No organisms proliferated; however, F. meningosepticum and P. maltophilia were particularly persistent at both temperatures. The risk of persistent MDV contamination appears to be dependent upon specific pharmaceutical, microbe and storage temperature interactions. Recommendations for the refrigeration of MDV medications may require reevaluation on a product-by product basis. PMID- 3846588 TI - Product evaluation committee. PMID- 3846589 TI - The role of pastoral care in nursing. PMID- 3846587 TI - Infection control and the hospitalized AIDS patient. PMID- 3846590 TI - Warnock--report of the committee of inquiry into human fertilisation and embryology. PMID- 3846591 TI - Increasing frequency of penicillin-resistant pneumococci: epidemiological aspects and case-control study. AB - At the Hadassah University Hospital, Mt. Scopus, Jerusalem, the frequency of patients with relatively penicillin-resistant pneumococci (RPRP) isolates has increased from 0.9 to 10.8% during the years 1979-82. Infants and children were particularly involved. Significantly more RPRP isolates were found in those less than 14 years old than in those who were older (P less than 0.005). The determination of susceptibility or relative resistance to penicillin was based on the disk sensitivity method, which remained unchanged throughout the study period. The minimal inhibitory concentration (MIC) to penicillin G was also determined for 20 RPRP isolates and was found to be in the range of relative resistance to penicillin (0.25 to 0.50 micrograms/ml) in all 20 isolates. A case control study of 16 index patients examined antibiotic usage during the 60 days preceding pneumococcal isolation. Total antibiotic usage was high in both groups (18.8 vs. 8.8 days, P = 0.2); beta-lactam antibiotic usage was significantly higher in the RPRP group than in the control group (13.3 vs. 4.2 days, 0.01 less than P less than 0.02). General prescribing practices, even in nonisolated areas where there is no need for public health programs to dispense prophylactic antibiotics, may produce sufficiently high antibiotic exposures to aid the emergence of RPRP strains. PMID- 3846592 TI - The influence of single dose intravenous antibiotics on faecal flora and emergence of Clostridium difficile. AB - The influence of a single intravenous dose of antibiotic on faecal flora and the emergence of Clostridium difficile was studied in volunteers. Seventy-eight volunteers (13 groups of 6 receiving 5 penicillins and 8 cephalosporins) were given a single intravenous dose of antibiotic. Results were compared with a control group of 6 volunteers who did not receive an antibiotic. Changes in the faecal flora were monitored over two weeks. Only cephalosporins were associated with emergence of Cl. difficile, penicillins and controls were not. Frequency of emergence of Cl. difficile in the 6 volunteers in each of the cephalosporin groups were as follows: cephaloridine 0, cephazolin, 1 cefuroxime 1, cefoxitin 2, cefotaxime 2, latamoxef 3, ceftriaxone 2, cefotetan 4. Latamoxef (moxalactam) was associated with a significant rise in total aerobic bacterial counts largely due to increased counts of enterococci. Cefotetan eliminated Escherichia coli and Bacteroides fragilis from the faecal flora three days after administration. PMID- 3846593 TI - Staphylocoagulase-binding region in human prothrombin. AB - A staphylocoagulase-binding region in human prothrombin was studied by utilizing several fragments prepared from prothrombin by limited proteolysis. Bovine prothrombin, prethrombin 1, prethrombin 2, and human diisopropylphosphorylated alpha-thrombin strongly inhibited formation of the complex ("staphylothrombin") between human prothrombin and staphylocoagulase, but bovine prothrombin fragment 1 and fragment 2 had no effect on the complex formation, indicating that the binding region of human prothrombin for staphylocoagulase is located in the prethrombin 2 molecule. To identify further the staphylocoagulase-binding region, human alpha-thrombin was cleaved into the NH2-terminal large fragment (Mr = 26,000) and the COOH-terminal fragment (Mr = 16,000) by porcine pancreatic elastase. Of these fragments, the COOH-terminal fragment, which includes Asn-200 to the COOH-terminal end of the alpha-thrombin molecule, partially inhibited the complex formation between staphylocoagulase and human prothrombin. In contrast, the NH2-terminal large fragment did not show any inhibitory effect on the staphylothrombin formation. These results suggest that the staphylocoagulase interacts with human prothrombin through the COOH-terminal region of alpha thrombin B chain. Other plasma proteins, factor X, factor IX, protein C, protein S, protein Z, all of which are structurally similar to prothrombin, did not inhibit the staphylothrombin formation at all, indicating that a specific interaction site with staphylocoagulase is contained only in the prothrombin molecule. PMID- 3846594 TI - Rat plasma high-molecular-weight kininogen. A simple method for purification and its characterization. AB - High-molecular-weight kininogen has been isolated from rat plasma in three steps in a relatively high yield. The purified preparation gave a single band on sodium dodecyl sulfate-polyacrylamide gel electrophoresis in the absence and presence of 2-mercaptoethanol, and the apparent Mr was estimated as 100,000. On incubation with rat plasma kallikrein, rat high Mr kininogen yielded a kinin-free protein consisting of a heavy chain (Mr = 64,000) and a light chain (Mr = 46,000), liberating bradykinin. The kinin-free protein was S-alkylated, and its heavy and light chains were separated by a zinc-chelating Sepharose 6B column. The amino acid compositions of rat high Mr kininogen and its heavy and light chains were very similar to those of bovine high Mr kininogen and its heavy and fragment 1.2 light chains, respectively. A high histidine content in the light chain of rat high Mr kininogen indicated the presence of a histidine-rich region in this protein as in bovine high Mr kininogen, although this region was not cleaved by rat plasma kallikrein. Rat high Mr kininogen corrected to normal values the prolonged activated partial thromboplastin time of Brown-Norway Katholiek rat plasma known to be deficient in high Mr kininogen and of Fitzgerald trait plasma. The kinin-free protein had the same correcting activity as intact high Mr kininogen. Rat high Mr kininogen also accelerated approximately 10-fold the surface-dependent activation of rat factor XII and prekallikrein, which was mediated with kaolin, amylose sulfate, and sulfatide. These results indicate that rat high Mr kininogen is quite similar to human and bovine high Mr kininogens in terms of biochemical and functional properties. PMID- 3846595 TI - Kinetics and thermodynamics of the interaction of elongation factor Tu with elongation factor Ts, guanine nucleotides, and aminoacyl-tRNA. AB - The exchange of elongation factor Tu (EF-Tu)-bound GTP in the presence and absence of elongation factor Ts (EF-Ts) was monitored by equilibrium exchange kinetic procedures. The kinetics of the exchange reaction were found to be consistent with the formation of a ternary complex EF-Tu X GTP X EF-Ts. The equilibrium association constants of EF-Ts to the EF-Tu X GTP complex and of GTP to EF-Tu X EF-Ts were calculated to be 7 X 10(7) and 2 X 10(6) M-1, respectively. The dissociation rate constant of GTP from the ternary complex was found to be 13 s-1. This is 500 times larger than the GTP dissociation rate constant from the EF Tu X GTP complex (2.5 X 10(-2) s-1). A procedure based on the observation that EF Tu X GTP protects the aminoacyl-tRNA molecule from phosphodiesterase I-catalyzed hydrolysis was used to study the interactions of EF-Tu X GTP with Val-tRNAVal and Phe-tRNAPhe. Binding constants of Phe-tRNAPhe and Val-tRNAVal to EF-Tu X GTP of 4.8 X 10(7) and 1.2 X 10(7)M-1, respectively, were obtained. The exchange of bound GDP with GTP in solution in the presence of EF-Ts was also examined. The kinetics of the reaction were found to be consistent with a rapid equilibrium mechanism. It was observed that the exchange of bound GDP with free GTP in the presence of a large excess of the latter was accelerated by the addition of aminoacyl-tRNA. On the basis of these observations, a complete mechanism to explain the interactions among EF-Tu, EF-Ts, guanine nucleotides, and aminoacyl tRNA has been developed. PMID- 3846596 TI - Detection of tyrosine-specific protein kinases with gastrin as exogenous substrate. AB - Gastrin was recently shown to be phosphorylated on its single tyrosine by the epidermal growth factor (EGF)-stimulated tyrosine protein kinase (TPK). The TPK previously detected in the murine lymphoma (LSTRA) induced by the Moloney murine leukemia virus phosphorylates gastrin, the apparent Km is 65 microM and the maximum rate 1900 pmol/min per mg; the kinase is more efficient with MnCl2 than with MgCl2, is stimulated by NaVO3 and inhibited by ZnCl2. Gastrin phosphorylation is observed only when a TPK is expressed by the cell: extracts of fibroblasts infected with a temperature-sensitive mutant of the Rous sarcoma virus had no gastrin kinase activity when grown at the non-permissive temperature whereas cells grown at the permissive temperature were transformed and disclosed a clear gastrin kinase activity. Gastrin kinases were detected in various transformed cells: human lymphomas, K562 cells, cells from a patient with acute proliferative leukemia, and normal cells: human T and B lymphocytes. PMID- 3846597 TI - Look beyond your clients' answers. (Are the elderly as healthy as they say)? PMID- 3846598 TI - Which client is a high risk? PMID- 3846599 TI - Gerontological nursing gets expert help on using the news. PMID- 3846600 TI - Gerontological nurse specialists: tomorrow's leaders today! PMID- 3846601 TI - In search of a new day's challenge. PMID- 3846602 TI - Capitalize on elder strengths. PMID- 3846603 TI - Measuring gerontological nursing's impact on the aged. PMID- 3846604 TI - Does incontinence affect your client's self-concept? PMID- 3846605 TI - Side effects of diuretics a danger for aged. PMID- 3846606 TI - Promoting healthy employee lifestyles. PMID- 3846607 TI - Diagnostic studies for the aged: what are the dangers? PMID- 3846608 TI - Penicillin therapy for treatment of experimental endocarditis caused by viridans streptococci in animals. AB - We studied the efficacy of penicillin and penicillin combined with streptomycin in the treatment of experimental endocarditis caused by viridans streptococci that are susceptible, tolerant, or relatively resistant to penicillin. Rabbits with experimental endocarditis were treated with procaine penicillin (1.5 X 10(5) U/kg) administered twice daily or with procaine penicillin (1.5 X 10(5) U/kg) plus streptomycin (20 mg/kg) administered twice daily for five days. Compared with control animals, animals treated with penicillin alone experienced a significant reduction (P less than .001) of colony forming units per gram of cardiac valve vegetations when infected with streptococci that are susceptible, tolerant, or resistant to penicillin. This antibiotic alone was less effective against streptococci that were tolerant or resistant to penicillin than against streptococci susceptible to the drug (P less than .01). The combination of penicillin and streptomycin was more effective therapy than was penicillin alone in animals with penicillin-tolerant or penicillin-resistant streptococci causing endocarditis (P less than .01). Penicillin-streptomycin therapy was less active against penicillin-resistant strains than against either penicillin-tolerant (P less than .04) or penicillin-susceptible (P less than .01) strains. The results of our study suggest that tolerance or relative resistance to penicillin in strains of viridans streptococci influences the response to therapy with penicillin alone or penicillin combined with streptomycin in the treatment of experimental endocarditis caused by viridans streptococci. PMID- 3846609 TI - The apostolic letter of the Holy Father on the christian meaning of human suffering. Part II. PMID- 3846610 TI - Addresses at the opening ceremony at the European Seminar. PMID- 3846611 TI - The block nurse program. PMID- 3846612 TI - Assessing the client's community resources through network analysis. PMID- 3846613 TI - Chemical hazards in the household: what every community health nurse should know. PMID- 3846614 TI - Cambodian refugee health care beliefs and practices. PMID- 3846616 TI - The physician as a nursing service customer. AB - One measure of a hospital's market success is bed occupancy. Since physicians admit patients to the hospital, they can rightfully be viewed as hospital customers. As customers, they respond to excellence in customer service. This article describes strategies for dealing with the physician as customer while still preserving the nurse-physician collegial relationship. PMID- 3846615 TI - The grievance-arbitration process. The experience of one nursing administration. AB - When nurse providers fail to meet standards of practice and productivity, nursing administrators may confront a dispute resolution process. Preparation for this experience greatly affects its outcome. This article presents the method used by a nursing department in one such situation. It describes the perspectives and approach of the nursing administration and legal counsel as the process unfolded. The process can be applied to both unionized and nonunionized organizations. PMID- 3846617 TI - Projecting supply expenses. AB - This article details a simplified approach to within-the-year supply expenses projections. Each factor of the projection formulas is discussed and the final formulas given. An example clarifies the projection calculations. PMID- 3846618 TI - Director of nursing effectiveness. DON and CEO perspectives and implications for education. AB - As part of a study, directors of nursing (DONs) and chief executive officers (CEOs) were asked what makes an effective nurse executive and were questioned about their educational and experiential backgrounds. More than four-fifths of the DONs and four-fifths of the CEOs said that effective DONs need knowledge about general and fiscal management and about nursing and the health-care field. The second most frequently mentioned factor was human management skill. DONs tended to view their positions as more political than did CEOs. DON and CEO perspectives on what makes DONs effective have implications for educational programs preparing nurse administrators. PMID- 3846619 TI - Quality assurance. Evaluate thyself. AB - Quality assurance (qa) programs must be documented carefully, systematically, and completely to be of continued value. A literature review revealed that no tools had been developed to evaluate the effectiveness of qa programs. A tool was designed and tested to assess the reports of qa studies, as an initial step in establishing the benefits of qa. The tool was found to yield reproducible results and its use is recommended to others. PMID- 3846621 TI - Fostering conditions that inspire inquiry. PMID- 3846620 TI - Becoming a mentoring manager. PMID- 3846622 TI - Second stage labor: what is normal? AB - Traditional management of second stage labor has come under scrutiny because of improved understanding of what normally occurs when second stage labor is allowed to proceed of its own accord without direction from birth attendants. When women bear down spontaneously as they feel the urge to push, either holding their breath briefly or with short exhalation of air, normal maternal and fetal physiological status is maintained and second stage labor does not appear to be lengthened. Using a variety of maternal positions during second stage labor can optimize physiologic functioning and increase maternal comfort. PMID- 3846623 TI - Nursing management of the woman with osteoporosis. AB - One accompaniment of loss of ovarian function for many women is osteoporosis. Care of women who suffer a hip fracture as a result of osteoporosis has become a public health issue and focuses on a possible lack of patient education regarding health maintenance. Nurses can play a key role in the care of women with osteoporosis by knowing about possible causative factors and by having a broad understanding of patient management, including how important patient education is to the maintenance of health. PMID- 3846624 TI - Time limitation for early breastfeeding. AB - To prevent nipple soreness, mothers who are breastfeeding are counseled to limit the time their infant feeds in the early postpartum period. No evidence supports this method of prevention. To the contrary, nursing and medical literature report that this practice is not effective and that its use should be discontinued. Nursing interventions to prevent nipple problems are presented. PMID- 3846625 TI - Grief and perinatal loss. A community hospital approach to support. AB - Hospital health-care professionals sometimes fail to recognize the depth to which parents grieve over a stillbirth and to acknowledge the validity of the parents' grief. By interacting with SHARE (Support and Help in Airing and Resolving Experiences), a parent support group for those who have experienced a perinatal loss, a hospital team was able to develop a written protocol with support measures to use when stillbirth occurs. This protocol has been in effect for three years and the staff has seen dual benefits. Staff members find constructive ways of offering support, and parents derive a sense of comfort and direction from the approach. PMID- 3846626 TI - Mothers' postpartum perceptions of spousal relationships. AB - The postpartum period is one of sexual adjustment for parents. A prospective study of a convenience sample of 194 women ascertained their perceptions of physical, social, and emotional aspects of spousal relationships at one, three, and six months postpartum. Attrition resulted in 131, 114, and 104 women remaining in the study at those time periods, respectively. Open-ended questions and rating scales were self-administered in the women's homes and returned in the stamped, addressed envelopes provided. Although perceptions of the spousal relationships changed little, sexual interest of the women declined over six months. The few women who responded to these questions felt positively about their mates' changed sexual interest in them. Of these women, the majority felt that breastfeeding did not affect their sexual enjoyment. At three and six months postpartum, the condom was the contraceptive method most frequently reported. PMID- 3846627 TI - The bicycle seat stool in the treatment of vaginal agenesis and stenosis. AB - The Ingram method for creating a neovagina in women with vaginal agenesis or stenosis by using an intermittent pressure technique was performed on 45 patients between 1975 and 1982. Poor patient compliance has been the major drawback of previously reported pressure techniques. To overcome this, the Ingram method employs a unique approach using Lucite dilators and a mobile bicycle seat stool. Extensive nursing participation and a successfully treated former patient used as a motivating role model have significantly contributed to the acceptance of this method. Thirty-seven of the 45 patients were able to experience coitus subsequent to treatment. PMID- 3846628 TI - Soviet health care: an American perspective. PMID- 3846629 TI - Degrees and professionalism. PMID- 3846630 TI - The predictive validity of fundal height curves in the identification of small- and large-for-gestational-age infants. AB - Several investigators have developed fundal height (FH) curves which have been useful in the identification of small-for-gestational-age (SGA) infants. Two of these curves were tested to determine if they retained their predictive validity for SGA infants, and to determine their predictive validity for large-for gestational-age (LGA) infants. Only one of the 12 SGA infants born to the 102 women in this sample would have been identified using either of the FH curves. The use of one of the FH curves would have identified all of the 10 LGA infants, while the use of the second FH curve would have identified five. Rather than assuming validity, clinicians are encouraged to test any fundal height curve for its ability to identify SGA and LGA infants in their own population. PMID- 3846631 TI - Assessment of antiprotease activity of some carbamate derivatives. AB - Six carbamate derivatives were tested for inhibitory activity towards porcine pancreatic elastase, trypsin, and chymotrypsin. Only three esters that are isatoic anhydride derivatives were found to inhibit elastase competitively but nonspecifically. KI values for the best two inhibitors were determined from Dixon plots. PMID- 3846632 TI - I never promised you a rose garden. But I must remember to tell you about the thorns. PMID- 3846633 TI - For better or for worse. PMID- 3846634 TI - Never to be alone. Existential therapy with battered women. PMID- 3846635 TI - Life with an alcohol-abusing husband. Is there marriage after drink? PMID- 3846636 TI - Levels of contracting. PMID- 3846637 TI - Surgical intervention to stop glaucoma. PMID- 3846638 TI - Retinal vascular obstruction signals systemic disease. PMID- 3846639 TI - Color coding can prevent mishaps. PMID- 3846640 TI - Ocular manifestations of Grave's disease. PMID- 3846641 TI - Using the radiuscope as a contact lens inspection device. PMID- 3846642 TI - Managing eye tumors. PMID- 3846643 TI - [Diagnosis by MRI (magnetic resonance imaging): an interview with Prof. Masahiro Iio]. PMID- 3846644 TI - [Primary nursing: preparation of nurses necessary for the development of primary nursing in Japan]. PMID- 3846645 TI - [Re-evaluation of the daily care. 40. Patients' sleep]. PMID- 3846646 TI - [Current status and the prospect of hemodialysis therapy]. PMID- 3846647 TI - [Education of dialysis patients by the cooperation of a nursing team]. PMID- 3846649 TI - [Assistance for children undergoing CAPD therapy]. PMID- 3846648 TI - [Nursing of dialysis patients with complications: diagnosis and dialysis associated complications at the nursing level]. PMID- 3846650 TI - [Activities as a home visiting nurse assigned by a local government]. PMID- 3846651 TI - [Report from the hospice. 4. Care of dying people: the rights of patients]. PMID- 3846652 TI - [Clinical aspects of pain. 12. Drug therapy (11): the basic rules in analgesic administration]. PMID- 3846653 TI - [Physical training at a home for the aged. 12. Methodology derived from clinical experiences: a hemianopsia patient who resorted to frequent use of the buzzer to call nurses]. PMID- 3846654 TI - [Changing medical therapy: toward the 21st century. 1. Regional medical care]. PMID- 3846656 TI - [Profile of a nurse: Ms. Hisae Ito who is dedicated to education of industrial nurses]. PMID- 3846655 TI - [Counseling of patients. 3. The first problem faced by the counsellor]. PMID- 3846657 TI - [Record of a cancer patient. A positive attitude of the patient. 4: "See you again!"]. PMID- 3846658 TI - [Public health nursing in Indonesia: difficulties in communication]. PMID- 3846659 TI - [Monologue by a nursing director: doll-making as a hobby]. PMID- 3846660 TI - [Etiology of ascites and pleural effusion and causative disease conditions]. PMID- 3846661 TI - [Differential diagnosis of ascites and pleural effusion]. PMID- 3846662 TI - [Standard treatment of ascites and pleural effusion]. PMID- 3846663 TI - [Treatment of refractory ascites]. PMID- 3846664 TI - [Nursing standard for patients with ascites and pleural effusion--nursing of patients with ascites and pleural effusion due to liver cirrhosis and nephrotic syndrome]. PMID- 3846665 TI - [Nursing of patients with marked accumulation of ascites: discussion]. PMID- 3846666 TI - [Rest and diet of patients with ascites and pleural effusion]. PMID- 3846667 TI - [Nursing of a patient with liver cirrhosis associated with advanced ascites]. PMID- 3846668 TI - [Nursing of patients with ascites and pleural effusion due to circulatory disorders]. PMID- 3846669 TI - [Nursing care of pleural effusion in a patient with kidney disease]. PMID- 3846670 TI - [Nursing care of tuberculous pleuritis]. PMID- 3846671 TI - [Nursing of a patient with cancerous ascites]. PMID- 3846672 TI - [Nursing of a patient with cancerous pleural effusion--nursing process for a patient with cancerous pleural effusion developing following surgery of breast cancer]. PMID- 3846673 TI - [A method of speech training for a patient with hemisection of the tongue for the treatment of tongue cancer]. PMID- 3846674 TI - [Microsurgical tuboplasty]. PMID- 3846675 TI - [Progress in monitoring in shock]. PMID- 3846676 TI - [Boron neutron capture method for the treatment of malignant brain cancer]. PMID- 3846677 TI - [Treatment of refractory Behcet's disease with cyclosporin A]. PMID- 3846678 TI - [Current treatment of subarachnoid hemorrhage]. PMID- 3846679 TI - [Keypoints in nursing of patients with subarachnoid hemorrhage]. PMID- 3846680 TI - [Blood pressure fluctuations in hospitalized hypertensive patients due to the sphygmomanometric conditions]. PMID- 3846681 TI - [Early detection of exacerbation of infection in patients with chronic obstructive lung diseases and their management]. PMID- 3846682 TI - [What a diabetic patient must know]. PMID- 3846683 TI - [Position of rehabilitation nursing in basic nursing education]. PMID- 3846684 TI - [Declaration of Patients' Rights (draft)]. PMID- 3846685 TI - [Outline of the university education on the air: a new type of education for the era of life-long education]. PMID- 3846686 TI - [Study of the educational program for the training of nursing instructors (2): through the analysis of the learning experience of the students who completed a seminar]. PMID- 3846687 TI - [Re-evaluation of a nursing course leading to a nursing degree: from the viewpoint of adolescence education]. PMID- 3846689 TI - [Educational technology. Operating room nursing (11). Medication errors]. PMID- 3846688 TI - [Learning of the process of the development of mother-child relationship in the clinical training of obstetrical nursing: analysis of students' emotional responses to the breast during nursing]. PMID- 3846690 TI - [On nursing education. 33. Continuing education]. PMID- 3846691 TI - [Methodology and problems of nursing education: solutions to the problems at the educational scene. 9. Sequence of teaching: preparation of a course outline from the theoretical model showing the relationship among nursing actions]. PMID- 3846692 TI - [Difficulties faced by modern nursing students: for advances in nursing education]. PMID- 3846693 TI - [Educational technology. Operating room nursing (12). Burns from an electrical knife]. PMID- 3846694 TI - [On nursing education. 34. Nursing students: their educational background and selection]. PMID- 3846695 TI - [Methodology and problems of nursing education: solutions to the problems at the educational scene. 10. Recommendation of self study]. PMID- 3846696 TI - [More effective promotion of health examination: a panel discussion]. PMID- 3846697 TI - [Examination for uterine cancer]. PMID- 3846698 TI - [From re-evaluation to prospect on public health nursing. The 3d viewpoint on the nature of human activities: a lesson in planning a study on home nursing instructions]. PMID- 3846699 TI - [Community focus in public health nursing. Whose responsibility?]. PMID- 3846701 TI - [A visit to Wahei Hospital at Taihoku]. PMID- 3846700 TI - [Survey on the attitudes of public health nurses and public health nursing students toward sexuality of the aged]. PMID- 3846702 TI - [Obstetric practice in Finland]. PMID- 3846703 TI - [Perineotomy and perineal rupture--a study on the course of healing]. PMID- 3846704 TI - [Report of travels in Nigeria]. PMID- 3846705 TI - Nurse-attorneys speak out on their roles. PMID- 3846706 TI - Legal function of the Kansas State Board of Nursing. PMID- 3846707 TI - Liability for nursing malpractice. PMID- 3846708 TI - You can cope with criticism. PMID- 3846709 TI - Independent action of prostaglandins and kinins on vasopressin-stimulated water flow. AB - The kallikrein-kinin and the prostaglandin systems are both important modifiers of vasopressin action. This study examines whether the systems are dependent on one another for their action. Four groups of toad hemibladders were examined. In groups 1 and 2 animals the endogenous prostaglandin system was inhibited. Inhibition of kallikrein by aprotinin caused vasopressin-stimulated water flow to increase further (24.8 +/- 4.9 to 34.5 +/- 4.8 microliters/min) while potentiation of kinins by captropril caused vasopressin-stimulated water flow to decrease (45 +/- 6.3 to 30.5 +/- 5.4 microliters/min). In groups 3 and 4 endogenous kallikrein was inhibited by aprotinin. The addition of prostaglandin E2 caused vasopressin-stimulated water flow to decrease (17.5 +/- 2.7 to 5.71 +/- 1.0 microliter/min) while the inhibition of endogenous prostaglandins caused vasopressin-stimulated water flow to increase (26.7 +/- 3.4 to 39.2 +/- 3.5 microliters/min). Thus, the inhibitory effects of prostaglandins and kinins on vasopressin-stimulated water flow are independent of one another. PMID- 3846710 TI - [Physical and movement training. Equilibrium for body and soul]. PMID- 3846711 TI - [Voting on June 9 1985: initiative "Right to Life"]. PMID- 3846712 TI - [Evaluation of the Swiss Nurses' Association's continuing education concept. Something has been accomplished--much remains to be done]. PMID- 3846713 TI - [Fribourg's Symposium on Patients' Day 1985. The call for volunteers]. PMID- 3846714 TI - [A national student organization? The preliminary work is finished]. PMID- 3846715 TI - [Postoperative complications related to anesthesia. Problems during recovery]. PMID- 3846716 TI - [Nurse in the prison environment. Before anything else a psycho-educational role]. PMID- 3846717 TI - [The family and the care-givers: encounter between 2 systems]. PMID- 3846718 TI - Move to home health. PMID- 3846719 TI - What home care means to nurses practicing it. PMID- 3846720 TI - Attracting client referrals. PMID- 3846721 TI - AIDS: some unanswered questions. PMID- 3846722 TI - Nursing revisited: profile Alice Howell Friedman. Interview by Ann Sheridan. PMID- 3846723 TI - Nursing revisited. "The Physicians' Hand": work culture and conflict in American nursing. PMID- 3846724 TI - Nursing in Latin America: a report of the 6th Congress of the Pan American Nursing Federation, December 1984. PMID- 3846725 TI - [Psychasthenia syndrome in children]. PMID- 3846726 TI - [Medical gymnastics in hypertension in children and adolescents]. PMID- 3846727 TI - [Clinical forms of endocrine infertility]. PMID- 3846728 TI - [Medical gymnastics in chronic dust-induced bronchitis]. PMID- 3846729 TI - [Sprayer for wetting the dressings in burns]. PMID- 3846730 TI - [Support base for the hardware used in taking duodenal content specimens]. PMID- 3846731 TI - [Bechterew's disease]. PMID- 3846732 TI - [Psychological characteristics of the work of a nurse in the pediatric ward]. PMID- 3846733 TI - [Work of the district nurse]. PMID- 3846734 TI - [Raising the qualifications of the paramedical personnel of psychiatric institutions]. PMID- 3846735 TI - [Herpes zoster (shingles)]. PMID- 3846736 TI - [Dispensary care of persons with a history of acute pneumonia]. PMID- 3846737 TI - [Outpatient polyclinical service for the rural population]. PMID- 3846738 TI - [Role of the nurse in the rheumatology office in providing dispensary care]. PMID- 3846739 TI - [Diabetes mellitus and pregnancy]. PMID- 3846740 TI - [Fungal infections of the eyes]. PMID- 3846741 TI - [Stevens-Johnson syndrome]. PMID- 3846742 TI - [The child in the family]. PMID- 3846743 TI - [Tobacco smoke--a poison for mankind]. PMID- 3846744 TI - [The moral character and professional qualities of the paramedical worker]. PMID- 3846745 TI - [Stomach cancer]. PMID- 3846746 TI - Labor relations and collective bargaining. PMID- 3846747 TI - Asians in Britain. PMID- 3846748 TI - Enuresis. PMID- 3846750 TI - The homeopathic treatment of skin conditions. PMID- 3846749 TI - Feeding the young child. PMID- 3846751 TI - Midwifery and acupuncture. PMID- 3846752 TI - Lassa fever and pregnancy. PMID- 3846753 TI - Continuing education: where do we go from here? PMID- 3846754 TI - Complement factor D in uremia. PMID- 3846755 TI - Children: a priority? PMID- 3846756 TI - A systems approach to reducing waiting time in outpatient clinics. PMID- 3846757 TI - Comparative nursing hours in tertiary pediatric facilities. PMID- 3846758 TI - Nursing professional liability insurance: an analysis. PMID- 3846759 TI - Budgeting for variable staffing. PMID- 3846760 TI - Health policy formulation and analysis. PMID- 3846761 TI - Resigning with style. PMID- 3846763 TI - Tell the world your ideas. PMID- 3846764 TI - PR and nursing go hand in hand. PMID- 3846762 TI - Innovation--the only hope for times ahead? PMID- 3846765 TI - NAPNAP leader encourages pioneering. PMID- 3846766 TI - Good fortune for nurses. PMID- 3846767 TI - The spirit of volunteerism. PMID- 3846768 TI - Program for success. PMID- 3846769 TI - Don't wait! Do it now. PMID- 3846770 TI - 10 steps to creativity. PMID- 3846771 TI - How to find and keep nurses. PMID- 3846773 TI - Get involved in legislation. PMID- 3846772 TI - Returning to practice. A personal experience. PMID- 3846774 TI - Role change, stress,...and you! Moving up from clinical nurse to management. PMID- 3846775 TI - Consult a nurse expert! PMID- 3846776 TI - The new breed! PMID- 3846777 TI - Double-duty speeches can help you publish! PMID- 3846779 TI - Walk, don't run, for fitness. PMID- 3846780 TI - You can hold costs down. PMID- 3846778 TI - How can nurse managers make use of staff? PMID- 3846781 TI - Establishing a leadership style that shows you do care. PMID- 3846782 TI - It's your turn to give a speech! PMID- 3846783 TI - Nurse & doctor: teamwork works. PMID- 3846785 TI - Staff nurse power can solve problems. PMID- 3846784 TI - Confront coworkers with the truth! Use effective methods. PMID- 3846786 TI - Accept a challenge. New managers can learn on the job. PMID- 3846787 TI - Modular nursing. A move ahead. PMID- 3846788 TI - Help the public maintain mental health. PMID- 3846789 TI - Joint practice may be for you. PMID- 3846790 TI - Form and function: marry the two! PMID- 3846791 TI - Mold a future with creative nonconformity. PMID- 3846792 TI - Dyad: managing together. PMID- 3846793 TI - New measures to contain AIDS. PMID- 3846794 TI - Members fight post threat. PMID- 3846795 TI - Royal College of Nursing: worth a try--valid concern. PMID- 3846796 TI - Is Griffiths philosophy oldfashioned in modern care? PMID- 3846798 TI - Royal College of Nursing. Timely review. PMID- 3846799 TI - Most complex piece of legislation has many implications for profession. PMID- 3846800 TI - What's it all about? PMID- 3846797 TI - Would silence have followed loss of deal? PMID- 3846802 TI - Royal College of Nursing: offers real hope. PMID- 3846801 TI - Long live life. PMID- 3846803 TI - In great danger. PMID- 3846804 TI - ENB consultation paper calls for 'close collaboration' between higher and further education and schools of nursing. PMID- 3846805 TI - Who is the odd man out?: the experience of Western Europe in containing the costs of health care. AB - Economic, demographic, and technological pressures have led at the same time to increased demands upon health services and the need to contain spending on health care. As the United States has focused singularly on an array of market mechanisms, Western European countries have each adopted a broader set of strategies along with limited de-insurance: innovative regulatory approaches and a move from compulsory health insurance models to flexible national health service models of providing health care. Pursuit of cost-containment in Western Europe has proceeded along with pursuit of quality and, above all else, equity. PMID- 3846806 TI - Chronic hazards and acute enforcement: dilemma for occupational health enforcement policy. AB - It is a well-understood principle of public health--and of disease control in general--that preventive efforts must be consistent with the natural history of a targeted disease. Governmental standards-setting and enforcement policies in occupational health confuse short-term strategies for safety hazard control with long-term disease control. Recent decisions in mining to rely on "significant and substantial" acute risk are incompatible with medical and epidemiological evidence on the nature and progress of chronic disease in many industries. PMID- 3846807 TI - High technology medicine: how defined and how regarded. AB - High technology--complex, expensive, restricted in availability, and requiring some form of explicit rationing--is bound to influence the medical task. Diagnosis, prognosis, decision, and management have all incorporated high technology, changing the hospital physician's role from one of private contractor to one of team member. Attitudes toward the balance between burden and benefit of high technology are as varied as are the conflicting vested interests among patients, professionals, society, industry, and government. Above all, it will take time for both patients and professionals to learn how to redefine expectations in a changing relationship. PMID- 3846809 TI - A demographic portrait of the oldest old. AB - Persons aged 85 years and over have been the most rapidly growing group for some time, although their numbers are yet relatively small. However meager the official data, they do reveal striking differences from other Americans, including a unique sex ratio, higher rates of institutionalization, and lower family income. Examination of recent demographic trends portends the direction of future changes among the oldest old. PMID- 3846808 TI - Introducing the "oldest old". AB - The mounting numbers of the very old--their percentage of the population will double in the next 15 years--is so new a phenomenon that there is little in historical experience to help in interpreting it. Not only are the older living longer, but they are also growing older in markedly different ways from their predecessors. The work at hand, still partial and tentative, indicates that the oldest old can no longer remain invisible in the economy, the polity, the health care system, or the statistical records. PMID- 3846810 TI - I.v. therapy quality assurance provides risk management. PMID- 3846811 TI - Parenteral chemotherapeutic agents. PMID- 3846812 TI - Use of protection by nurses during occupational handling of antineoplastic drugs. PMID- 3846813 TI - Can i.v. filtration be cost-justified? PMID- 3846814 TI - The how-to's of home care. PMID- 3846815 TI - A home i.v. antibiotic program. PMID- 3846816 TI - I.v. therapy record sheet. PMID- 3846817 TI - Will nursing assert itself? PMID- 3846818 TI - Creative management of impaired nursing practice. PMID- 3846819 TI - Mini on the scene: state nurses' associations and the impaired nurse. PMID- 3846820 TI - Professional impairment: strategies for managing the troubled nurse. PMID- 3846821 TI - Physical design implications for the performance evaluation process. PMID- 3846822 TI - Job satisfaction or dissatisfaction reported by registered nurses. PMID- 3846824 TI - Stress and rapid decision making in nursing: an administrative challenge. PMID- 3846825 TI - Disease prevention, health promotion, and aging: curricular trends. PMID- 3846823 TI - Depression in hospital nurses: implications for nurse managers. PMID- 3846827 TI - "So you've never had a mentor ... not to worry". PMID- 3846826 TI - Student stages and supervisory stance during a family study. PMID- 3846828 TI - On becoming a professional. PMID- 3846829 TI - Challenging RN students: practicing assessment skills in an urban rescue mission. PMID- 3846830 TI - Mentoring the novice. PMID- 3846831 TI - Futuring: planning for tomorrow's learner. PMID- 3846832 TI - Caring for patients who have abdominal cancer. PMID- 3846833 TI - More than you know. PMID- 3846834 TI - New drugs. PMID- 3846835 TI - Is nursing a profession? PMID- 3846837 TI - Suicide threat. Action stat! PMID- 3846838 TI - Perfecting your i.v. therapy techniques. Part II. PMID- 3846836 TI - A battle cry for Mr. MacDonald. PMID- 3846839 TI - More than skin deep. Guidelines on caring for the burn patient. PMID- 3846840 TI - Take no chances with fat embolism. PMID- 3846841 TI - Administering epinephrine in an emergency. PMID- 3846843 TI - Ed's code. Sharing. PMID- 3846842 TI - How to get a job--when getting a job is tough. PMID- 3846844 TI - Dressing: show them you mean business. PMID- 3846845 TI - Environment: the healing difference. PMID- 3846846 TI - Motivation: getting the medical units going again. PMID- 3846847 TI - CC productivity: the ego dimension. PMID- 3846848 TI - Documenting patient care: getting it all together. PMID- 3846849 TI - Praise: the powerhouse of self-esteem. PMID- 3846850 TI - The nurse and the surrogate mother. PMID- 3846852 TI - Decisions: how you reach them makes the difference. PMID- 3846851 TI - The future of nursing. PMID- 3846853 TI - Competition vs. collegiality. PMID- 3846854 TI - CICIAMS XIIIth World Congress. Why this theme: health personnel and human rights? PMID- 3846856 TI - 1985: a year in preparation of XIIIth World Congress. PMID- 3846855 TI - Healthy youth: our best resource. PMID- 3846857 TI - The right-to-know and the occupational health nurse. PMID- 3846858 TI - Community health nursing students: working and learning in the workplace. PMID- 3846859 TI - The high cost of low self-esteem. PMID- 3846860 TI - Holistic health promotion in the occupational health setting. PMID- 3846861 TI - Pre-retirement planning. PMID- 3846862 TI - OHNs in a cost containment environment: preparing to meet the challenge. PMID- 3846863 TI - Mass Mutual's wellness needs assessment. PMID- 3846864 TI - Plasma component of middle ear effusion evaluated by prekallikrein level. AB - Plasma leakage into middle ear was evaluated by the level of prekallikrein in middle ear effusions (MEE), measured by the fluorometric assay. Plasma leakage into middle ear is a major source of MEE, especially serous effusions. The degree of plasma leakage at the time of sampling is very low in mucoid effusions and varied in serous effusions. Active plasma leakage into middle ear would occur at the early restricted inflammatory phase in the middle ear. PMID- 3846865 TI - Smoking and the psych nurse. PMID- 3846866 TI - Reflections on "professional": meanings and issues. PMID- 3846867 TI - Third party reimbursement good for nurses and patients. PMID- 3846868 TI - What can nurses expect in the future? PMID- 3846869 TI - "A modest proposal"--nursing accreditation of hospitals is a powerful fantasy. PMID- 3846870 TI - Reflections on five years of private practice. PMID- 3846871 TI - [Function of the blood kallikrein-kinin system in surgical injury and hypoxia of the liver in experiments]. PMID- 3846872 TI - Suicide: a preventable tragedy. PMID- 3846873 TI - Temperamental differences: a critical concept in child health care. PMID- 3846874 TI - Single fatherhood: how is it different? PMID- 3846875 TI - Assessing narcotic addiction in neonates. PMID- 3846876 TI - Attitudes toward breast-feeding among female high-school students. PMID- 3846877 TI - Emergency drug guidelines: a pediatric reference. PMID- 3846878 TI - Enuresis: treatment and overtreatment. PMID- 3846879 TI - Weaning the breast-fed toddler or preschooler. PMID- 3846880 TI - Pediatric drug information. What is the role of oral electrolyte solutions in diarrheal dehydration in children? PMID- 3846882 TI - Practical approaches to clinical research. Selecting the sample. PMID- 3846881 TI - Pediatric management problems (lead poisoning). PMID- 3846883 TI - Bovine surfactant (surfactant TA) therapy in immature baboons with hyaline membrane disease. AB - As a prelude to clinical trials with a bovine surfactant (surfactant TA), in human infants with hyaline membrane disease, pulmonary and hemodynamic changes following its instillation in premature baboons were investigated. Baboons, delivered by cesarean section at 141 +/- 3.5 days (mean +/- SD, 77% gestation), were provided with intensive care. At 2 hours of age in one group (n = 10), 100 mg/kg of surfactant TA (reconstituted bovine surfactant, Tokyo Tanabe Co., Tokyo) was instilled into the lungs. Sequential measurements and monitoring of pulmonary and hemodynamic variables were carried out in these ten baboons and in a control group of five baboons for 16 hours, at which time the experiments were electively terminated. At birth, the pulmonary compliance, findings of chest radiographs, ratio of arterial PO2 to alveolar PO2, and respirator variables needed to maintain normal blood gas and acid base status were identical in both groups and indicative of severe hyaline membrane disease. Following surfactant instillation, the treated group demonstrated a rapid increase in PO2 with significantly improved ratio of arterial PO2 to alveolar PO2 (from a mean +/- SD pretreatment value of 0.21 +/- 0.11 to 0.45 +/- 0.11 by 16 hours). Pulmonary compliance improved similarly (from pretreatment value of 0.18 +/- 0.06 mL/cm H2O/kg to 0.27 +/- 0.09 mL/cm H2O/kg). Significant reduction in respirator support variables could be achieved in all treated animals; however, in the control animals, the pulmonary status worsened as evidenced by increasing mean airway pressure and respirator variables to keep normal blood gas and acid base status, thus worsening compliance. At autopsy, pulmonary pressure-volume curves were significantly different with large hysteresis obtained in the surfactant-treated group. Although no deleterious effect on hemodynamics was noted in surfactant TA treated animals, a large patent ductus arteriosus was demonstrated by aortography. Increased lung blood flow, probably due to a large patent ductus arteriosus flow, was demonstrated by radiolabeled microsphere technique. The physiologic significance and clinical relevance of these findings in premature baboons treated with surfactant TA are discussed. PMID- 3846885 TI - Patterns in education: the unfolding of nursing. PMID- 3846884 TI - [Changes in the kallikrein-kinin system of the blood in bronchopulmonary diseases of young children]. PMID- 3846886 TI - State-of-the-art technology: computers and curriculum. PMID- 3846887 TI - Nursing education: preparing for the future. PMID- 3846888 TI - Strategies for recruiting graduate faculty in nursing service administration. PMID- 3846889 TI - Credentialing: the thread between licensure, accreditation, and certification. PMID- 3846891 TI - Marketing continuing education programs in a climate of cost containment. PMID- 3846890 TI - The corporate connection: multihospital systems rekindle commitment. PMID- 3846892 TI - International nursing education. PMID- 3846893 TI - Preparing clinical specialists for prospective payment. PMID- 3846894 TI - Mission for the future of nursing education. PMID- 3846895 TI - Perspectives on the patterns of nursing education. PMID- 3846896 TI - Can single-purpose institutions provide baccalaureate education? PMID- 3846897 TI - A case for the single-purpose degree-granting college of nursing. PMID- 3846898 TI - A disease called 'egalitarianism': single-purpose institutions for nursing. PMID- 3846899 TI - Assessing single-purpose institutions through the accreditation process. PMID- 3846900 TI - Patterns in education: the unfolding of nursing. Building a knowledge base. Dialectics of theory development. PMID- 3846901 TI - The impact of computers on nursing. PMID- 3846902 TI - The nucleotide sequences of a cytoplasmic and a chloroplast tRNATyr from Scenedesmus obliquus. AB - The nucleotide sequences of two species of tyrosine accepting tRNA from the eukaryotic green alga Scenedesmus obliquus have been determined. The sequence of the cytoplasmic tRNATyr is: (sequence in text) This is the first chloroplast tRNATyr species to be sequenced. PMID- 3846903 TI - Compilation of tRNA sequences. PMID- 3846904 TI - Compilation of sequences of tRNA genes. PMID- 3846905 TI - When nurses ration patient care. PMID- 3846906 TI - The uphill battle for comparable worth. PMID- 3846908 TI - Bandwagons, parades, and panaceas. PMID- 3846907 TI - The growth of political action in nursing. PMID- 3846909 TI - Pioneering a new approach to professional education. PMID- 3846910 TI - International nursing: a force for knowledge development. PMID- 3846911 TI - Bringing professional issues alive. PMID- 3846912 TI - [Behavior of elderly couples at home and nursing intervention strategies centered on the married couple]. PMID- 3846913 TI - Pediatric nurses' perception of pain experienced by children and adults. PMID- 3846914 TI - The status of cancer nursing research in Canada. PMID- 3846915 TI - Positive effects of education on nursing students' attitudes toward death and dying. PMID- 3846916 TI - Articulation and baccalaureate entry to practice. PMID- 3846917 TI - The teaching of systematic physical assessment in baccalaureate nursing programmes in Canada. PMID- 3846918 TI - A decision-making model for diagnosing and intervening in elder abuse and neglect. AB - There is an absence of empirical data about how health care providers operationally define and conceptualize abuse and neglect of the aged and the decision processes involved in assessing and identifying neglectful and abusive relationships. The grounded theory technique was used to formulate a 4-stage decision-making model. Tape-recorded interviews of a sample of 29 health care providers were coded and analyzed. The model identifies three types of decisions (diagnostic, value, and intervention) and the categories health care providers consider in making these decisions. The complexity of the decision processes is revealed in five pathways through the model. The hypotheses from the data can serve as a guide for future research aimed at assisting health care providers to make better decisions about intervening in situations where elders are being cared for by relatives in the home setting. PMID- 3846920 TI - Relationship of socialization and stress to perimenstrual symptoms, disability, and menstrual attitudes. AB - This study examined the influence of socialization and exposure to a stressful milieu on perimenstrual symptoms, related disability, and menstrual attitudes. Women (N = 179) aged 18 to 35 were interviewed using the Index of Sex Role Orientation, Schedule of Recent Events, Moos Menstrual Distress Questionnaire, and Menstrual Attitudes Questionnaire, Path analysis was used to assess a model based on Mechanic's (1962, 1980) concept of illness behavior for negative affect, pain, and water retention symptoms during the perimenstruum. Exposure to a stressful milieu was useful in explaining cyclic, recurrent symptoms of negative affect. Of all the symptom clusters, negative affect was found to be the most important cause of perimenstrual disability. Traditional socialization, intense negative affect symptoms, and related disability all influenced menstrual attitudes. PMID- 3846919 TI - Quality of life of hearing-impaired older women. AB - A survey of 66 hearing-impaired older women aged 54 to 96 years interviewed at home examined major influences on quality of life experienced by 27 prevocationally deaf and 39 later onset subjects. A causal model was specified; the predictors of quality of life included age, age at onset of hearing loss, financial adequacy, social hearing handicap, perceived health, and functional social support. The model proposed that health, social support, hearing handicap, and financial adequacy would directly affect quality of life as well as mediate the effect of the demographic variables, age and age at onset of loss, on this outcome. Later onset subjects were hypothesized to have lower quality of life due to increased social hearing handicap, decreased health, and decreased functional social support. Results of the path analysis showed the best predictors of quality of life to be social hearing handicap, functional social support, and perceived health. The later onset group had an overall lower perception of quality of life, this relationship being mediated as predicted. Generally, the hypothesized causal model was supported with 34% of variance explained. Descriptive findings also supported a difference in social hearing handicap between the two groups, yielding several implications for nursing interventions. PMID- 3846921 TI - Work patterns of midlife female nurses. AB - The majority of studies on adult career development and adult development have been based on male samples, which generated male models. When a woman's work was taken into consideration, it was frequently viewed narrowly as being either present or absent. The present study identified work patterns followed by female nurses now at midlife. Structured interviews were conducted with 47 midlife nurses aged 46 to 59 who graduated in the 1950s from one diploma school of nursing. The four work patterns that emerged from the data included the stable pattern, the double-track pattern, the interrupted pattern, and the unstable pattern. PMID- 3846922 TI - Comparison of professional activities of nurse doctorates and other women academics. AB - This study compared professional activities of nurse doctorates with those of academic women doctorates in other disciplines. The Biographical-Professional Activities Questionnaire, completed by 219 respondents, assessed biographical data and six faculty indexes: primary academic function, percentage of time devoted to specific academic functions, professional publications, research grants received, consultation, and professional meetings attended. The findings indicated that teaching was the primary academic function for both groups, academic women spent significantly more time on research activities and published more journal articles, and nurse doctorates spent more time on administrative activities. Few other significant differences were found between nurse-doctorate faculty and other academic women in these research institutions when controlling for years since doctorate. PMID- 3846923 TI - Physiologic circadian rhythmicity in preterm infants. AB - This study investigated evidence of a circadian rhythm in the physiologic variables of transcutaneous oxygen (tcPO2) level, pulse rate, respiratory rate, frequency of respiratory pauses, and skin temperature in six 34- to 37-week preterm infants. A value for each variable was noted every 30 minutes for 24 hours, providing 245 observations for each infant. An adaptation of cosinor analysis, a least squares procedure that determines the cosine curve for a 24 hour period that best fits the observed pattern of values, was applied to the data. Statistically significant circadian rhythmicity was found for five of the six subjects with regard to skin temperature. Significant circadian rhythm was also demonstrated in two or three patients for all other variables. No significant consistent synchrony for individual variables across subjects was found. Actual peak values of respiratory pause frequency and trough values of tcPO2, however, occurred between midnight and 4:30 A.M. for every infant. Preterm infants exhibited evidence of a circadian rhythm in skin temperature, and tcPO2 and respiratory pause frequency exhibited day/night pattern characteristics. PMID- 3846924 TI - Oxygen uptake and cardiovascular responses in control adults and acute myocardial infarction patients during bathing. AB - Physiological responses before, during, and after three types of baths were determined in 18 patients who were 5 to 17 days postinfarction and 22 control adults. In the patients, oxygen consumption (VO2) averaged 6, 7, and 7 ml/kg/min, peak heart rate 105, 108, and 112 beats per minute, and rate pressure product 115, 120, and 111 for basin, tub, and shower bathing, respectively. Oxygen consumption during bathing was less than 3 times resting levels. The patients had a significantly lower VO2 during bathing than the control subjects. The patients' peak heart rates were higher than anticipated for the level of exertion, and sometimes exceeded the target heart rates used in predischarge testing. Peak heart rate and occurrence of dysrhythmia did not differ significantly between the three types of baths. In the women patients, rate pressure product was significantly higher after tub bath than after basin bath or shower. The subjects had no cardiovascular symptoms during bathing, rated all three baths as light exertion, and disliked the basin bath. The data show that the physiologic costs of the three types of baths are similar, differences in responses to bathing seem more a function of subject variability than bath type, and many cardiac patients can take a tub bath or shower earlier in their hospitalization. However, more research is needed to predict patients likely to have an exaggerated response to bathing and to develop clear guidelines for bath method selection and progression. PMID- 3846925 TI - A reexamination of nursing role conceptions. AB - This study tested 101 beginning nurses for the relationships of three personality variables, ego development, sex typing, and assertiveness, to role conceptions and role conception combinations. Responses were examined on four self-completion questionnaires. Two research questions guided the study; one examined the relationships of the personality variables to role conceptions and the other examined the contribution of the personality variables to the role conception combinations. The correlation analysis for the first research question indicated that of all the variables examined, the femininity (F) and masculinity-femininity (MF) sex-typing attributes contributed most toward understanding which nurses were likely to hold particular role conceptions. Both of these sex-typing attributes were related to two role conceptions; F was related to professional role and service role conceptions, MF to bureaucratic and service role conceptions. Assertiveness was also significantly related to the professional role conception. The multivariate analysis of variance, used to examine the second research question, indicated that the nurses in the four role combinations (the number of roles held to a high degree) differed in their mean scores on some combination of one or more personality variables. Follow-up analyses indicated the MF score and the androgynous sex-typing category were both significantly higher for nurses who held all three role conceptions to a high degree. PMID- 3846926 TI - The Health Self-Determinism Index. AB - This study is a psychometric evaluation of a new measure of motivation in health behavior. The Health Self-Determinism Index was completed by 202 randomly selected adults via a mail survey. The multidimensionality of the construct was supported through the factorial isolation of four subscales: self-determined health judgments, self-determined health behavior, perceived competency in health matters, and internal-external cue responsiveness. These four factors accounted for 56% of the total explained variance in the measure. The alpha reliability coefficient for the total scale is .84; the internal consistency of the four subscales is supported by alpha reliability coefficients of .75, .75, .67, and .69, respectively. With refinement, this measure will enable exploration of client antecedents and correlates of motivation in health behavior. Further, specific nursing interventions can be examined for their ability to alter clients' motivation in relation to specific health behaviors. Finally, the role of motivation in predicting health outcomes can be explored. PMID- 3846927 TI - Patient education in a public hospital. PMID- 3846928 TI - Validity, reliability, and neither. AB - Some studies of measuring instruments are validity studies. Others are reliability studies. Still others, such as the investigation of the stability of a construct and the correlation between the scores on two different levels of the same test, are neither. Authors of test manuals and of journal articles dealing with certain tests should label them accordingly as substantive studies, not methodological investigations. PMID- 3846929 TI - An avoidable disease. PMID- 3846930 TI - Infertility under the microscope. PMID- 3846932 TI - Nurses and theology. The professional spirit. PMID- 3846931 TI - Patten's recipe for success. PMID- 3846933 TI - From asthmatic to addict. PMID- 3846934 TI - An age-old problem. PMID- 3846935 TI - Treponemal diseases of man. PMID- 3846936 TI - Raynaud's disease. PMID- 3846937 TI - Management: spanner in the works. PMID- 3846938 TI - Retrospective evaluation of two courses for senior nurses. PMID- 3846939 TI - Spotlight on children. PMID- 3846940 TI - Children are different. PMID- 3846941 TI - A European perspective. Interview by Michael Arton. PMID- 3846942 TI - Rinse out! PMID- 3846943 TI - Farleigh: a bitter saga. PMID- 3846944 TI - A quid each day keeps the budget at bay. PMID- 3846945 TI - Guidelines on sidelines. PMID- 3846947 TI - Mental health dilemmas. Speaking up for the patient. PMID- 3846948 TI - Mental health dilemmas. Matter of commitment. PMID- 3846946 TI - When the pressure gets too much. PMID- 3846949 TI - Education: all in the family. PMID- 3846950 TI - Handling brittle bone children. PMID- 3846951 TI - Prophylactic regimes for routine cystoscopy. PMID- 3846952 TI - Management: costing duty rotas. PMID- 3846953 TI - Asian expectations. PMID- 3846954 TI - The day of the yam. PMID- 3846955 TI - Backchat: legally disabled. PMID- 3846956 TI - Lifeline on the road to Sudan. PMID- 3846957 TI - Rape. The double victim. PMID- 3846958 TI - Rape. Survivor's advocate. PMID- 3846959 TI - Close encounters. PMID- 3846961 TI - Budgeting for beginners. Time is money. PMID- 3846960 TI - Systems of Life No. 125. Setting up the systems--25. Appendicular skeleton. PMID- 3846962 TI - Take your partner by the hand.... PMID- 3846963 TI - Autoimmune disease. PMID- 3846964 TI - Backchat. Whose job is it anyway? PMID- 3846965 TI - Life in the B & B. PMID- 3846966 TI - Training for the front line. PMID- 3846967 TI - A battle for independence. PMID- 3846968 TI - Management: taking a lead. PMID- 3846969 TI - Student observations. Fluid balance charts. PMID- 3846970 TI - Decompression sickness. Coming up for air. PMID- 3846971 TI - Clinical. Heart-to-heart. PMID- 3846972 TI - Cause for complaint. Lost property. PMID- 3846973 TI - Mental health nursing. What's in a name? PMID- 3846974 TI - Mental health nursing. Reflective image. PMID- 3846976 TI - Symposia on hospice and compassionate care and the dying experience. PMID- 3846975 TI - Mental health nursing. Throwing down the gauntlet. PMID- 3846977 TI - Grief and bereavement. Healing through hurt. AB - Based on the premise that understanding bereavement as a natural healing process provides a foundation for nursing assessment and intervention, this article focuses on adult reactions to grief. Suggestions for facilitation of healthy grieving in survivors including staff and for sensitive, caring, and empathetic responses are included. Nurses are challenged to use creative ways to help bereaved persons build bridges to health, not walls to loneliness. PMID- 3846978 TI - Sources of hospice staff stress and how to cope with it. AB - This article is an overview of stresses affecting hospice caregivers and provides a qualitative analysis of stress arising from the dynamics of patient and family care as well as the inner and environmental aspects of stress experienced by inpatient and home care nursing staff. A description of coping mechanisms used by hospice caregivers is provided and preventive measures to counter stress and burnout are discussed. PMID- 3846979 TI - Continuing education for hospice staff. AB - Hospice nursing is unique because of the philosophy and issues surrounding hospice care. Program planning for hospice staff follows basic principles. The real challenge in developing programs for orientation, continuing, and inservice education is using a format that will truly enable staff to meet the objectives. A lecture, programmed instruction, or video/slide format works well for the "nuts and bolts," but more creativity is needed for the other issues facing the hospice nurse--death, grief, symptom control, stress, team roles, and helping patients with options. Incorporating into the program some of the methods suggested will offer staff the opportunity to become involved in learning and make that learning more meaningful. PMID- 3846980 TI - Symposium on compassionate care and the dying experience. Hope: its spheres and dimensions. AB - The phenomenon of hope has been described according to spheres and dimensions. The two spheres and six dimensions of hope, deduced from interviews and observations of elderly patients with cancer and tested on another population, serve as a theoretical model for understanding the complex nature of hope. They provide a perspective for assessing hope and for therapeutically influencing hope in persons during the last phases of life and in their families. Analysis of data suggests hope is a multidimensional, dynamic life force rather than trait oriented and unidimensional. Therefore, there is always hope. The nursing challenge is to understand how hope may be operative, in order to facilitate and support this indispensable resource throughout the illness experience, but perhaps most importantly, during the last phase of a person's life. PMID- 3846981 TI - Elements of empathic care for dying patients and their families. AB - Empathy presents unique challenges to the nurse who cares for dying patients and their families. It must be a focused process in which the nurse exhibits genuineness, warmth, and a positive regard for the patient's concerns. This article explores a philosophical framework as well as the behavioral and attitudinal aspects of the empathic process in relationships with the patient and family members. PMID- 3846982 TI - Loneliness: a concept relevant to the care of dying persons. AB - Loneliness, whether conceptualized as a basic "fact" of human existence or as a painful, subjective experience in response to changes or deficiencies in the quality or quantity of a person's social relationships, has been recognized as an experience feared or felt by human beings since antiquity. As health care professionals, nurses have observed and responded to loneliness as an actual or potential problem amenable to nursing intervention. Being a subjective experience and one which may or may not be connected to the more objective condition of social isolation or aloneness, loneliness has puzzled scholars and researchers across disciplines. Although the nature of loneliness as a relational deficit is beginning to be explicated, particularly through the efforts of social psychologists, there are still major questions to be answered with regard to antecedents, manifestations, and interventions. Dying persons may represent a particularly vulnerable group, especially those dying in an acute care/cure oriented setting. Since the limited knowledge about the nature of loneliness has been acquired primarily through studying college students or young adults, the question of whether or not their experience is comparable to that of other groups remains to be answered. Nurses continue to make clinical judgments about the loneliness of their patients. They basically are guided by a knowledge of affiliative functioning, and their interventions reflect a goal of optimal, social functioning for individuals experiencing or at-risk for loneliness. PMID- 3846983 TI - Spiritual support for the dying. AB - Diversity of spiritual beliefs and practice is respected as guidelines and practical interventions for the nurse providing spiritual support are presented. Spirituality and spiritual support are defined, and four areas of spiritual needs of dying clients are identified. Interdisciplinary collaboration is also discussed. PMID- 3846984 TI - Symposium on compassionate care and the dying experience. Alterations in comfort. AB - This article discusses the alterations in comfort that occur most frequently in the dying patient. Common priorities of patients are identified with appropriate nursing interventions detailed. PMID- 3846985 TI - Loss and terminal illness. AB - The experience of terminal illness can best be viewed as a situation of multiple losses involving the dying person, family members and friends, and the health care providers engaged in offering services to them. It is a major transition during which the central participants must cope with the personal meanings of the forthcoming death as well as other losses brought about by the disease process, medical treatments, and the need to provide care for the dying person. How families adapt to the stresses and changes imposed by the experience of living with dying depends on their previous experiences with death, their established patterns of communication about serious matters, and their decision-making practices. Some individuals and families are at greater risk than others for developing maladaptive responses and behaviors during and after the experience of terminal illness. Risk factors to be considered in making hypotheses about the potential for maladaptive reactions include the strength of the attachment to the dying person, uncontrollable and distressing symptoms, and coping limitations associated with age and other factors contributing to increased vulnerability to the demands of continuous change. Working effectively with different kinds of families during the transition of terminal illness can best be accomplished within a conceptual framework built upon knowledge about people undergoing change. The concept of safe conduct can serve as an overall guide for the creation of nursing services designed to offer personalized care and accessibility of professional help at times of maximum need by the family. Assisting dying patients and their families toward the achievement of their personal goals is fundamental to the idea of safe conduct. The delivery of nursing care in terminal illness requires an orientation to assessment as an ongoing process that makes use of knowledge about disease processes, medical treatments, individual and group adaptations to loss, risk factors suggestive of maladaptive responses, and family dynamics in relation to crisis and change. Although nurses bring expert knowledge about available treatments and resources, the process of assessment and decision-making about what needs to be done can be best accomplished through a process of contracting with the patient and family. These mutual agreements need to be concerned with the establishment of specific goals, plans for achieving them, available resources within the family, division of responsibility, time limits on the achievement of objectives, and mutual evaluation of the process and the outcomes.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3846986 TI - Integrating theories of crisis intervention into hospice home care teaching. AB - The theories and techniques of crisis intervention are discussed as they apply to teaching patients and families in the home hospice setting. Personal responsibility and self-management of the dying process is emphasized. PMID- 3846987 TI - Supportive care for families of dying children. AB - This article has reviewed the effects on the family system of the experience of living with a dying child. The importance of facilitating open channels of communication between the child who is dying, the mother, father, and the caregivers are discussed with examples of parents' and childrens' concerns and questions about the dying process. Finally, it is suggested that research conducted by a nurse researcher on families of children who are dying may itself be considered an intervention. PMID- 3846989 TI - Bowel habits in the elderly. PMID- 3846988 TI - Clinical revision. 1. Constipation. PMID- 3846990 TI - Education. A case of mistaken responsibility. PMID- 3846991 TI - Research. 2. Reviewing the literature. PMID- 3846992 TI - Cervical screening: is Clarke sexist? PMID- 3846993 TI - Patient's page. Professional detachment or plain thoughtlessness? PMID- 3846994 TI - Trauma '85. Alcohol: how much is too much? PMID- 3846995 TI - Down your way. Centre stage. PMID- 3846996 TI - Psychiatry. Long-stay break. PMID- 3846997 TI - Community. Primary health care nurse of the future. PMID- 3846998 TI - Infant feeding. PMID- 3846999 TI - Mental handicap. A most desirable residence. PMID- 3847000 TI - How much are you worth? PMID- 3847001 TI - Research. Under the microscope. PMID- 3847002 TI - Research series. 3. Selecting the right method. PMID- 3847003 TI - Management. A programme for planning. PMID- 3847004 TI - Solvent abuse in Glasgow. PMID- 3847005 TI - Clinical revision series. 2. The continent ileostomy. PMID- 3847006 TI - Preventing postoperative venous thrombosis. PMID- 3847007 TI - The development of the national illness service. PMID- 3847010 TI - Down your way. A clean slate. PMID- 3847008 TI - Too young to live. PMID- 3847009 TI - Education. All that glisters... PMID- 3847011 TI - Monitoring the nursing process. PMID- 3847012 TI - Monitoring the nursing process. Going for goals. PMID- 3847013 TI - Advanced nursing practice. Creativity, enthusiasm, diplomacy. PMID- 3847014 TI - Conspiracy of silence. PMID- 3847015 TI - Care before concepts. PMID- 3847016 TI - Asian infant feeding. PMID- 3847017 TI - Pulling together. PMID- 3847018 TI - In defence of the profession. PMID- 3847019 TI - Profile of a pioneer. Interview by Anthony Carr. PMID- 3847020 TI - Health education. Eat yourself healthier. PMID- 3847021 TI - Educating the critically ill. PMID- 3847022 TI - Education. Games nurses play. PMID- 3847023 TI - Research series. 4. Collecting the data. PMID- 3847024 TI - Legionnaires' disease: mountain out of a molehill? PMID- 3847025 TI - Practice, Let like cure like. PMID- 3847027 TI - Clinical revision series. 3. Congestive cardiac failure. PMID- 3847026 TI - Trauma '85. A burning problem. PMID- 3847028 TI - Management. Chewing over the future. PMID- 3847029 TI - Education. Scoring after extra time. PMID- 3847030 TI - Mental handicap. Let's give them a chance! PMID- 3847031 TI - Research series. 5. Analysing the data. PMID- 3847032 TI - Fun, but no fire. PMID- 3847034 TI - Establishing therapeutic relationships. PMID- 3847033 TI - Clinical revision series. 4. Aplastic anaemia. PMID- 3847035 TI - Learning before advancing. PMID- 3847036 TI - Nursing problem patients. PMID- 3847037 TI - [Advanced nursing practice. Psychological therapy in affective disorders]. PMID- 3847038 TI - Psychiatry. But what do CPNs actually do? PMID- 3847039 TI - Practice. Advancing country by country. PMID- 3847040 TI - Psychiatry. Five stars for Fermoy. PMID- 3847042 TI - Trauma '85. Gunshot wounds to the head. PMID- 3847041 TI - Good days and bad days. PMID- 3847043 TI - Clinical revision series. 5. Carpal tunnel syndrome. PMID- 3847045 TI - Health visiting the elderly. PMID- 3847044 TI - Occupational health. One on the road. PMID- 3847046 TI - The myth of the menopause. PMID- 3847047 TI - Menopausal support. PMID- 3847048 TI - Development of fetoscopy. PMID- 3847049 TI - From now 'til 2000.... PMID- 3847050 TI - Education. In a whirlpool. PMID- 3847051 TI - Mental health. A word in your head. PMID- 3847052 TI - Research series. 6. Presenting the report. PMID- 3847053 TI - Management. Officers need aims. PMID- 3847054 TI - Matters of conscience. Telling the truth. PMID- 3847055 TI - Nursing care study. Blessing in disguise. PMID- 3847056 TI - Altered image. PMID- 3847057 TI - Coming out of the shell. PMID- 3847058 TI - Overhaul the shift system. PMID- 3847059 TI - Oncology nursing society study of antineoplastic drugs. PMID- 3847060 TI - Membership in action through guidelines for cancer nursing practice. PMID- 3847061 TI - Weight gain among stage II breast cancer patients: a study of five factors. PMID- 3847062 TI - Biologicals in cancer treatment: future effects on nursing practice. PMID- 3847063 TI - Quality assurance for hospice programs. PMID- 3847064 TI - Patterns of nausea and vomiting in chemotherapy patients: a preliminary study. PMID- 3847066 TI - Private practice in oncology nursing. PMID- 3847065 TI - Comparison of a cancer-specific locus of control and the multidimensional health locus of control scales in chemotherapy patients. PMID- 3847067 TI - Nutritional teaching cards. PMID- 3847068 TI - Getting our "C's" in order. PMID- 3847069 TI - Why form a certification corporation. PMID- 3847070 TI - Selecting an instrument to measure dyspnea. PMID- 3847071 TI - Toxicity of ochratoxin A and vanadium to growing chicks. AB - The effects of ochratoxin A (OA) and vanadium (V), singly and in combination, were determined in male Leghorn chicks from 1 to 28 days of age. The chicks were fed a control diet containing the following additives: A) none; B) 2.5 mg OA/kg; C) 50 mg V/kg; D) 2.5 mg OA plus 50 mg V/kg. These data show that body weight gains were significantly reduced by OA and V singly, and a toxicity-enhancing synergism exists between OA and V, which caused a further reduction in performance. The OA-V combination caused a significant increase in the relative weights of the liver, kidney, gizzard, and proventriculus and a significant decrease in the relative weights of the bursa of Fabricius. This decrease in bursal weight was due to atrophy of lymphoid follicles as indicated by the increase in the histologic lesion score. Uric acid in serum was increased, and albumin, calcium, and phosphorus were decreased in the OA-V combination group. There were also small but significant changes in the hematological parameters measured. Distribution of OA to the liver and kidney was not altered, nor was the distribution of V to the liver, kidney, or muscle tissue. Histologic lesions in kidneys were mild but were more prevalent in chicks in the OA-V combination group. PMID- 3847072 TI - Advances and innovations in craniofacial surgery. PMID- 3847073 TI - Establishing a craniofacial anomalies family support group. PMID- 3847074 TI - Facial deformity and social development. PMID- 3847075 TI - From a patient's point of view. PMID- 3847076 TI - A team approach to the child with a craniofacial defect. PMID- 3847077 TI - Craniofacial deformities: an historical and etiological perspective. PMID- 3847078 TI - Pain management: extending the expertise of a cancer center to the community. PMID- 3847079 TI - Analgesic consultation. PMID- 3847080 TI - Japanese field-testing of WHO guidelines. PMID- 3847081 TI - Setting up a microcomputer database for a pain clinic. PMID- 3847082 TI - Deplorable nursing alleged: death results. PMID- 3847083 TI - Thorazine injected; pt. dies: criminal charges. Case in point: people v. Nygren (696 P. 2d 270--CO). PMID- 3847084 TI - Legal case briefs for nurses. MI: epileptic pt. drowns: nurses terminated. IL: R.N.'s, M.D.'s & limitations: double standard. PMID- 3847085 TI - Chaos in labor/delivery: quadraplegic born. Case in point: Schultz v. Mutch (211 Cal. Rptr. 445--CA). PMID- 3847086 TI - [The ureters. (II). Observations on ureterostomies]. PMID- 3847087 TI - [Materials and technics. The cardiac monitor]. PMID- 3847088 TI - [Physiopathology, epidemiology and prognosis of laryngeal cancers]. PMID- 3847089 TI - [Total laryngectomy. Indications, development and complications]. PMID- 3847090 TI - [Anesthesia-recovery in total laryngectomy]. PMID- 3847091 TI - [Role of the circulating nurse]. PMID- 3847093 TI - [Role of the instrument nurse]. PMID- 3847092 TI - [Anatomy of the larynx]. PMID- 3847094 TI - [Round table. Colonic irrigation]. PMID- 3847095 TI - [Maintenance of the operating rooms]. PMID- 3847096 TI - [Physiology of the larynx and of the pharynx]. PMID- 3847098 TI - Muscle imbalance and extremity injury. A perplexing relationship. PMID- 3847097 TI - Muscular exercise and fatigue. AB - The development of muscular fatigue during exercise is a common phenomenon, and several forms depend on the precise type of exercise performed. The causes are still not clearly established, although the involvement of electrical and metabolic factors have been demonstrated. Several techniques which allow for the analysis of muscle function in terms of electrical activation and energy metabolism are (a) a needle biopsy of muscle for histochemical and metabolic studies, (b) magnetic resonance spectroscopy for the non-invasive study of muscle energy metabolism and pH, (c) electromyographic analysis of the electrical characteristics of muscle, and (d) percutaneous electrical stimulation of muscle for the force-frequency and relaxation characteristics of muscle. Endurance training increases the capacity to sustain exercise possibly by altering muscle energy metabolism and contractile properties. Fatigue is a self-protective mechanism against the damage of contractile machinery of muscle as, for example, with the development of rigor, which occurs if the energy stores are depleted. To illustrate the roles of energy supply and electrical properties in muscle in fatigue, the 'catastrophe theory' used in engineering has been applied. This may explain abrupt changes of function of individual muscle cells, while for the muscle as a whole, fatigue may be manifested as a more gradual loss of force. PMID- 3847099 TI - [Phototherapy: treatment of neonatal icterus]. PMID- 3847100 TI - [Diet in digestive system diseases (III)]. PMID- 3847101 TI - [Cardiopulmonary resuscitation]. PMID- 3847102 TI - [Fundamental anatomophysiological characteristics of the venous system]. PMID- 3847103 TI - [Nursing studies as seen by the alumnae of Santiago]. PMID- 3847104 TI - [The ostomized patient]. PMID- 3847105 TI - [Nurse's role in control programs for sexually transmitted diseases]. PMID- 3847106 TI - [Acquired immunodeficiency syndrome (A.I.D.S.)]. PMID- 3847107 TI - [Nutritional equilibrium]. PMID- 3847108 TI - [Maintenance of the Swan-Ganz catheter in the pediatric intensive care unit]. PMID- 3847109 TI - [The nurse facing new technics: psychopedagogic approach]. PMID- 3847110 TI - [Protection of the hospital against fires]. PMID- 3847111 TI - [When anaerobics become pathogenic]. PMID- 3847112 TI - [Blood transfusion: compatibility of preserved blood with intravenous solutions]. PMID- 3847113 TI - ['P.A.E.' in a school center]. PMID- 3847114 TI - [Congenital hypothyroidism in newborn infants]. PMID- 3847115 TI - [Intervention for electric risks in the electrosurgery unit]. PMID- 3847116 TI - [Electricity and electric conduction in a patient care environment]. PMID- 3847117 TI - [Intervention for electric risks in the operating room]. PMID- 3847118 TI - Resolving conflicts without coming to blows. PMID- 3847119 TI - The trauma patient with multiple fractures. PMID- 3847120 TI - Meeting the challenge of craniotomy care. PMID- 3847121 TI - What you can do now to make better doctors. PMID- 3847122 TI - Clearing up gastric suction setbacks. PMID- 3847123 TI - What kind of food poisoning is it? PMID- 3847124 TI - A high-tech approach to a GI problem. PMID- 3847125 TI - How to spot the suit-prone patient. PMID- 3847126 TI - Bedside nursing means heart-to-heart care. PMID- 3847127 TI - Is your patient really ready for surgery? PMID- 3847128 TI - Recruiters can't wait for tomorrow. PMID- 3847129 TI - [Erythrocin]. PMID- 3847130 TI - [Ponderal Retard]. PMID- 3847131 TI - [Pityriasis versicolor or tinea versicolor]. PMID- 3847132 TI - [Trichomycosis-erythrasma]. PMID- 3847133 TI - [Kerions]. PMID- 3847134 TI - [Tinea capitis]. PMID- 3847135 TI - [Vulvovaginitis]. PMID- 3847136 TI - [Candidiasis]. PMID- 3847137 TI - [Mycoses. Special problems]. PMID- 3847138 TI - [Mycoses. Introduction]. PMID- 3847139 TI - [Deep mycoses]. PMID- 3847140 TI - [Treatment of mycoses]. PMID- 3847141 TI - [Nursing care of tinea]. PMID- 3847142 TI - [Judiciary record. Global financing]. PMID- 3847143 TI - [Rights and obligations of nursing students. Myth or reality?]. PMID- 3847144 TI - [Mycology technics]. PMID- 3847145 TI - [Dermatophytoses]. PMID- 3847146 TI - [Timoptol]. PMID- 3847147 TI - [Blood transfusions]. PMID- 3847148 TI - [Non-alcoholic cirrhosis]. PMID- 3847149 TI - [Prognosis and treatment of cirrhosis]. PMID- 3847150 TI - [Changes in alcohol consumption when cirrhosis is named]. PMID- 3847151 TI - [Punctures of ascites]. PMID- 3847153 TI - [Attitude of care personnel faced with alcoholic cirrhotic patients]. PMID- 3847152 TI - [Assessment of Mr. B's hepatomegaly]. PMID- 3847154 TI - [Comparative study of various rotation systems in hospital departments]. PMID- 3847155 TI - [What can be expected of esthetic surgery of the nose?]. PMID- 3847156 TI - [Definition, histopathology and etiology of cirrhoses]. PMID- 3847157 TI - [Nozinan]. PMID- 3847158 TI - [Ergonomics, a help in occupational health. A Swiss opinion]. PMID- 3847159 TI - [Socioprofessional mobility and mental vulnerability. Apropos of migration and changes in living locales]. PMID- 3847160 TI - [Preventive assistance to teachers in trouble]. PMID- 3847161 TI - [Analysis of work at the service of prevention in occupational psychopathology. Some teachings from Belgian research]. PMID- 3847162 TI - [Occupational accidents: objective data and perceived realities]. PMID- 3847163 TI - [Encounter or 2 years with a mentally retarded patient]. PMID- 3847164 TI - [Working conditions and fatigue]. PMID- 3847165 TI - [Sectral]. PMID- 3847166 TI - [Aneurysms of the thoracic aorta]. PMID- 3847167 TI - [Physiopathology of aneurysms]. PMID- 3847168 TI - [Circulatory assistance or intra-aortic counter pulsation]. PMID- 3847169 TI - [Anatomopathological aspects of aortic aneurysms]. PMID- 3847170 TI - [Utrogestan]. PMID- 3847171 TI - [Ulceronecrotizing enterocolitis. Care and monitoring in the acute phase]. PMID- 3847172 TI - [Oxygen therapy]. PMID- 3847173 TI - [A case of ulceronecrotizing enterocolitis. Care and monitoring of a child with an ileostomy and a central catheter]. PMID- 3847174 TI - [Nutritional requirements of early childhood]. PMID- 3847175 TI - [Thermal regulation of the premature infant]. PMID- 3847176 TI - [The adolescent and voluntary interruption of pregnancy in the hospital milieu]. PMID- 3847177 TI - [Premature infants, parents, care-givers]. PMID- 3847178 TI - [Extemporaneous examination in mammary pathology]. PMID- 3847179 TI - [Radiotherapy of mammary cancer]. PMID- 3847180 TI - [Cytopunctures, drill biopsies and tru-cut needle in the diagnosis of breast cancer]. PMID- 3847181 TI - [Curietherapy of mammary cancers]. PMID- 3847182 TI - [Following cancer radiotherapy: kinesitherapy and rehabilitation]. PMID- 3847183 TI - [Mrs. R's breast cancer]. PMID- 3847184 TI - [Intensive chemotherapy in day hospitals]. PMID- 3847185 TI - [Anatomopathologic report and breast cancer]. PMID- 3847186 TI - [General hypothermia and local frost injury]. PMID- 3847187 TI - [Dying is a natural part of living. Encounter at St. Joseph's hospice]. PMID- 3847188 TI - [Introduction to a discussion: continuing education in clinical nursing. Summary of recommendations at the 1985 national meeting]. PMID- 3847189 TI - [NSH (Norwegian Nursing University) to UiO (University in Oslo): what does the transfer mean for nurses?. Interview by Bjorn Arild Ostby]. PMID- 3847190 TI - [Family in crisis--need for cross-professional team work]. PMID- 3847191 TI - [Infection prevention activities: good hospital hygiene--a part of the procedures]. PMID- 3847192 TI - [Transport services in radical change. Nursing's role in ambulance services]. PMID- 3847194 TI - [NSF's (Norwegian Nurses' Association) cooperation with work-force organizations]. PMID- 3847193 TI - [Gerontopsychiatry--a neglected field in nursing]. PMID- 3847195 TI - [Nursing University or University of Oslo: faculty attachment or own institute?]. PMID- 3847196 TI - [District leaders. District's professional activities should be reinforced]. PMID- 3847197 TI - [Danish investment in improved hospital hygiene: new educational offer to Danish hygiene nurses]. PMID- 3847198 TI - [Joint continuing education for nurses in primary health care?]. PMID- 3847199 TI - [Geriatric dementia--does it get effective institutional treatment?]. PMID- 3847200 TI - [NSF (Norwegian Nurses' Association) is committed to the continental shelf. Interview by Jofrid Bjorkvik]. PMID- 3847201 TI - [Cross-professional cooperation in the nursing home: medication regime could be improved]. PMID- 3847202 TI - [Continuing education in clinical nursing]. PMID- 3847203 TI - [Increased need for home nursing. Connecting link between home and institution]. PMID- 3847204 TI - [Children in front of the television screen]. PMID- 3847205 TI - [Functional capacity and self care level in a selected group of elderly in the Bergen community]. PMID- 3847206 TI - [District leader. Information activities in the district]. PMID- 3847207 TI - [Nurses' work environment]. PMID- 3847208 TI - [Continuing education and operation room nursing]. PMID- 3847210 TI - [Odelsting unanimous: ambulance services are district communal responsibility]. PMID- 3847211 TI - [Stranglehold on midwifery services could be released]. PMID- 3847209 TI - [Asgard--how it can go when nurses speak to deaf ears]. PMID- 3847212 TI - [Primary nursing care or team nursing--how can we organize patient-centered nursing care?]. PMID- 3847213 TI - [New challenges for health visitors. Preventive activities with persons attempting suicide. Interview by Bjorn Arild Ostby]. PMID- 3847214 TI - [From home nursing in Ostfold: terminal care at home]. PMID- 3847215 TI - [National meeting of the LNS (National Norwegian Student Nurses' Organization): fight against cutbacks and reduced practice training]. PMID- 3847216 TI - [Protective units for senile dementia. Treatment offer or emergency solution?]. PMID- 3847217 TI - [6-hour workday--consequences for nursing services]. PMID- 3847218 TI - [The Philippines--world's largest exporter of nurses]. PMID- 3847219 TI - [District leaders. Use of part-time positions--a job problem for women]. PMID- 3847220 TI - [Nursing care load in homes for the aged. Homes for the aged--nursing home without nurses]. PMID- 3847221 TI - [A special nursing school in Cairo]. PMID- 3847222 TI - [Acute pain and practical nursing care. II]. PMID- 3847223 TI - [District leaders. Nursing home--custodial care or dignified care?]. PMID- 3847224 TI - [6-hour days--unequal strategies]. PMID- 3847225 TI - [Hallingdal Infirmary. A health care level which adjusts to nursing needs]. PMID- 3847226 TI - Activation of factor XII and prekallikrein with cholesterol sulfate. AB - Cholesterol sulfate was found to display a strong ability to trigger the activation of Factor XII and prekallikrein in the presence of HMW kininogen. Other sulfate ester derivatives of testosterone, estrone, pregnenolone and dehydroepiandrosterone and cholesterol tested did not show any effect on the activation of Factor XII and prekallikrein. The activity of cholesterol acetate and sulfodeoxycholic acid was very weak. Cholesterol sulfate markedly shortened the partial thromboplastin time of normal human plasma, but not plasmas deficient in Factor XII, Factor XI and HMW kininogen. Upon prolonged incubation, the partial thromboplastin time of prekallikrein-deficient plasma was also shortened. Moreover, as well as kaolin and sulfatide, cholesterol sulfate shortened the partial thromboplastin time of plasmas from monkey, dog, rat, guinea pig, sheep, cow, hog and horse, but not from duck and chicken. Since cholesterol sulfate is distributed in erythrocytes, various organs and body fluids, it may play an important role in the activation of the intrinsic blood coagulation system. PMID- 3847227 TI - [The homeless and health care provisions. I. Behavior and characteristics of the homeless, their care and problems with health care provisions]. PMID- 3847228 TI - [Professional innovation and social developments]. PMID- 3847230 TI - [The Recommendation Nursing Professional Profile of the National Council for Public Health]. PMID- 3847229 TI - [Burnout: the risk for nurses and patients]. PMID- 3847231 TI - [Current treatment of hemophilia]. PMID- 3847232 TI - [Everyday power wielding by psychiatric nurses]. PMID- 3847233 TI - [Relation therapy for mentally retarded children with emotional disturbances; a psychotherapeutic method]. PMID- 3847234 TI - [Characteristics of the nursing situation. Developments in the methods and systems of nursing. IV]. PMID- 3847235 TI - [Medical information for nurses. The shattered lower leg. II: surgical therapy]. PMID- 3847236 TI - [Code of behavior for nurses? On the desirability and the possibility of a professional code]. PMID- 3847237 TI - [Medical data and patients' opinion on the hospital regimen]. PMID- 3847238 TI - [Obesity and dieting. The remedy worse than the disease?]. PMID- 3847239 TI - [The application of interpersonal skills therapy in the psychiatric hospital]. PMID- 3847240 TI - [Pastoral care in its infancy]. PMID- 3847241 TI - How has cholecystectomy surgery changed? PMID- 3847242 TI - Use a checklist for successful open house. PMID- 3847244 TI - OR teamwork pays off! PMID- 3847243 TI - Know the law for organ donations. PMID- 3847245 TI - OR nursing roles in research: an orthopaedic model. PMID- 3847246 TI - [Kallikrein-kinin system of the synovial fluid in closed injury to the knee joint]. AB - State of the kallikrein-kinin system components (activity of kallikrein and total esterase activity of trypsin-like enzymes) was studied in synovial fluid at the acute period of the knee joint closed injury. The kallikrein activity as well as the esterase activity of trypsin-like enzymes correlated completely with clinical manifestations of the reactive arthritis. These enzymes appear to have a definite importance in development of inflammation in the joint. PMID- 3847247 TI - Healthy youth: our best resource. PMID- 3847248 TI - How adequate is the training of students in the accident and emergency department? PMID- 3847249 TI - [Saliva and wound healing following tooth extraction]. PMID- 3847250 TI - Activation of the plasma kallikrein-kinin system through activation of factor XII. PMID- 3847251 TI - Code of ethics: fact or fiction. PMID- 3847252 TI - How a suit starts. PMID- 3847253 TI - Diaphragmatic hernia. Low stress = higher survival. PMID- 3847254 TI - Top schools' top texts. PMID- 3847255 TI - Dyspnea in advanced cancer. PMID- 3847256 TI - Dyspnea in advanced cancer. Putting the patient in control. PMID- 3847257 TI - What teaching nursing homes are teaching us. PMID- 3847258 TI - Female circumcision. PMID- 3847259 TI - AJN job focus. The Texas point of view. PMID- 3847260 TI - Wound care forum. A dialogue on wound care. PMID- 3847261 TI - Assessment-driven patient care records. PMID- 3847262 TI - The death of a hospital. PMID- 3847263 TI - Clearance and metabolism of glandular kallikrein in the rat. AB - This study was undertaken to characterize the clearance of circulating rat glandular kallikrein and to determine the contribution of various organs and the urinary excretion to the removal of glandular kallikrein from the bloodstream. We injected either active 125I-kallikrein or kallikrein inactivated with phenylmethylsulfonyl fluoride (125I-PMSF-kallikrein) intravenously into intact or nephrectomized rats and then studied the disappearance rate of trichloroacetic acid (TCA)-precipitable radioactivity from the circulation. Inactivation by PMSF markedly reduced the binding of kallikrein to plasma protease inhibitors. The removal rate of the acid-precipitable radioactivity fit a biexponential curve for both active and inactive kallikrein. In the intact rats approximately 50% of the radioactivity was removed from the circulation 30 min after the injection of active 125I-kallikrein. Removal of the kidneys did not significantly affect the clearance of active kallikrein. On the other hand, inactive 125I-PMSF-kallikrein was removed from blood faster than active 125I-kallikrein in normal animals. Approximately 50% of the radioactivity was removed from the circulation 8 min after the injection, and the half-life of inactive 125I-PMSF-kallikrein was markedly prolonged by bilateral nephrectomy. Active 125I-kallikrein was taken up by tissues, particularly the liver and the kidney. In urine, less than 2% of the radioactivity was excreted in 60 min as TCA-precipitable material. We concluded that glandular kallikrein is cleared rapidly from the circulation of the rat, probably in the form of a complex with a plasma protease inhibitor.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3847264 TI - Directions for nursing research: toward the twenty-first century. PMID- 3847265 TI - [Disorders of the kallikrein-kinin system in patients with chronic kidney failure during hemodialysis treatment]. PMID- 3847266 TI - Nurse practitioner groups from coalition. PMID- 3847267 TI - Study shows school NPs improve children's access to health care. PMID- 3847268 TI - RNs are 'naturals' for adult day care. PMID- 3847270 TI - Diverse program, lively house mark NSNA meeting. PMID- 3847269 TI - ANA Board report on titling: what it's all about. PMID- 3847271 TI - [A cause of neonatal hemorrhage: thrombopenia by platelet alloimmunization]. PMID- 3847272 TI - In vitro activities of rifapentine and rifampin, alone and in combination with six other antibiotics, against methicillin-susceptible and methicillin-resistant staphylococci of different species. AB - The antistaphylococcal activity of rifapentine, a new rifamycin SV derivative, was evaluated in vitro and compared with that of rifampin. A total of 313 staphylococcal strains freshly isolated from clinical material and including representatives of all currently recognized Staphylococcus species of human origin were used. The susceptibility to methicillin of all the test strains was determined preliminarily. Despite minor differences with some species, the MICs of rifapentine were found to be substantially similar to those of rifampin. Methicillin-resistant strains of all species were most resistant to rifapentine and rifampin than were their methicillin-susceptible counterparts. For most strains tested, the MBCs of both rifamycins exceeded by twofold the respective MICs. Both the checkerboard dilution and time-kill methods were used to determine the interactions of rifapentine or rifampin with six different antibiotics: cefamandole, vancomycin, teicoplanin, gentamicin, erythromycin, and fusidic acid. No significant differences between the two rifamycins in the combinations were observed against either methicillin-susceptible or methicillin-resistant strains. Minor differences were noted depending on the second antibiotic tested or the staphylococcal species examined. Antagonism was never observed, and indifference was the prevalent response. Cases of synergism were observed occasionally with the checkerboard method and slightly more often with the time-kill method. PMID- 3847273 TI - Comparative activity of the quinolones against anaerobic bacteria isolated at community hospitals. AB - The in vitro activity of five quinolone compounds, amoxicillin, and clindamycin against 118 strains of anaerobic bacteria isolated at community hospitals was determined by an agar dilution method. Nalidixic acid and cinoxacin had poor activity, and norfloxacin and enoxacin showed relatively poor activity. Ciprofloxacin was active against Bacteroides fragilis, Fusobacterium species, Clostridium perfringens, and gram-positive cocci. At peak levels achievable in the feces, norfloxacin and enoxacin had moderate activity. PMID- 3847275 TI - Reconsidering the "market model" in obstetrics. Part III. Nursing. PMID- 3847274 TI - In vitro activity of cefbuperazone against anaerobic bacteria. AB - The in vitro activity of cefbuperazone was compared with that of cefoxitin, moxalactam, and piperacillin against 305 strains of anaerobic bacteria. Piperacillin was the most active overall, inhibiting 97% of all anaerobes tested at 128 micrograms/ml. Cefbuperazone had poor activity against the Bacteroides fragilis group and Clostridium difficile (43 and 0% susceptible, respectively) but good activity (90.5%) against all other anaerobic bacterial species tested. PMID- 3847276 TI - Lessons from the Dublin study of electronic fetal monitoring. PMID- 3847277 TI - Adapting hospital obstetrics to birth in the squatting position. PMID- 3847278 TI - Beyond risks and rates in obstetric care. 1. PMID- 3847279 TI - Human urinary proteinase inhibitor: inhibitory properties and interaction with bovine trypsin. AB - The major urinary trypsin inhibitor (UTI) was found to inhibit bovine chymotrypsin and human leucocyte elastase strongly, cathepsin G weakly. No inhibition of porcine pancreatic elastase was observed. The stoichiometry of the inhibition of bovine trypsin by UTI was determined spectrophotometrically to be 1:2 (I/E molar ratio). After incubation of UTI with this enzyme in various molar ratios, two complexes (C1 and C2) could be visualized in alkaline polyacrylamide gel electrophoresis. C1 was isolated by affinity chromatography on Con-A Sepharose. In dodecyl sulfate polyacrylamide gel electrophoresis, C1 was dissociated to give an inhibitory band with the same electrophoretic mobility as native UTI. C2 released an active inhibitory fragment with Mr near 20000. A time course study demonstrated that at a molar ratio I/E of 1.5:1, the C2 complex appears after two hours of incubation. PMID- 3847280 TI - Nurse practitioners: do they really practice nursing? PMID- 3847282 TI - Is there anyone out there? PMID- 3847281 TI - The effect of aging on cell-free protein synthesis in the free-living nematode Turbatrix aceti. AB - The age-related reduction in cell-free protein synthesis in the free-living nematode Turbatrix aceti is due to a defect in the ribosomes. Addition of young ribosomal wash or use of young medium does not improve the activity of old, run off ribosomes in the presence of phenylalanine and poly(U). It appears that some of the old ribosomes are incapable of binding the EF-1-GTP-aminoacyl-tRNA complex. These ineffective ribosomes are present in the 80 S (monosomal) fraction. Old ribosomes obtained from polysomes appear to bind normally. PMID- 3847283 TI - "Reach out and touch someone". PMID- 3847284 TI - A simulated practice environment: Computerville Regional Hospital. PMID- 3847285 TI - Study of the impact of an environmental change on the elderly. PMID- 3847286 TI - Psychogeriatric therapies and counselling. PMID- 3847287 TI - Group therapy with the elderly--a non-traditional example. PMID- 3847288 TI - Evaluation of in vivo and in vitro effectivity of immune defense against a spontaneously arising, nonlymphoid rat tumor. I. Analysis of natural immune defense. AB - Possible mechanisms of natural defense against a nonimmunogenic, nonlymphoid rat tumor were evaluated in vitro and examined for effectivity in vivo, using BSp6S, the subcutaneously grown transplantation line of a spontaneously arising fibrosarcoma in the BDX rat strain, which is highly susceptible to natural killer (NK) cells and macrophages (Mo). The role of nonspecific immune defense in vivo was demonstrated by eliminating NK cells by irradiation and Mo by silica treatment. Especially after depletion of NK cells a significant acceleration of tumor growth and a reduction in the number of cells required for tumor takes was observed. Activation of Mo by Corynebacterium parvum (CP) did lead to retardation of tumor growth; prevention of tumor growth was only achieved after inoculation of a marginal dose of tumor cells. Activation of NK cells was of minor influence. It is concluded that NK cells and Mo are the main influences on survival time, the effectiveness of NK cells being limited to early periods of tumor growth. PMID- 3847289 TI - Effect of a thymic factor, thymostimulin, on growth and pulmonary metastases of Lewis lung carcinoma. AB - The antitumor and antimetastatic activities of a thymic factor, thymostimulin (TP 1), with or without cyclophosphamide (CPA) were examined in C57BL/6 mice inoculated with Lewis lung carcinoma (3LL). Tumor growth was followed by determining the tumor diameter after tumor implantation. TP-1 given to mice every 2 days after tumor implantation significantly inhibited tumor growth without affecting the survival rate. For induction of spontaneous pulmonary metastases, 3LL cells were implanted into the footpads of mice, and the implanted tumor was removed on day 9. The antimetastatic effect of TP-1 on pulmonary metastases after removal of the primary tumor was evaluated by counting the number of pulmonary surface nodules. TP-1 showed antimetastatic activity depending on its time of administration and dose. Combined therapy with TP-1 plus CPA significantly prolonged the survival of mice with pulmonary metastases. The cytolytic activities of spleen cells on 3LL cells were enhanced in mice treated with TP-1 and/or CPA and the cytolytic activity of nonadherent spleen cells, the T-cell population, was enhanced. The role of cytolytic spleen cells in inhibiting and preventing metastases was discussed. PMID- 3847290 TI - Muramyl dipeptide analogues as potentiators of the antitumor action of endotoxin. AB - The potentiation of endotoxin-induced necrosis and regression of solid syngeneic Meth A tumors in mice previously observed following administration of N acetylmuramyl-L-alanyl-D-isoglutamine (MDP) was investigated further by use of various muramyl peptide analogues and two unrelated synthetic adjuvants, viz. the pluronic polyol L121 and dimethyldioctadecylammonium bromide (DDA) instead of MDP. All agents were administered in aqueous solution by the IV route. None of the muramyl peptide analogues nor L121 or DDA had any strong antitumor action of their own. Two 6-O-acylated muramyl peptides (L2-MDP and B30-MDP) and muramyl dipeptide stearoyllysine [MDP-Lys (L18)] clearly potentiated endotoxin-induced necrosis and regression. In contrast, MDP with L- instead of D-isoglutamine was completely inactive. Optimal activity of B30-MDP and MDP-Lys (L18) was only achieved by adding of suitable amounts of a nonionic surfactant. L121 and DDA could not replace muramyl peptides as potentiating agent. The combination of endotoxin, MDP, and L121 caused complete tumor regression in all mice, but was highly toxic. On the basis of the data in the literature on the biological response-modifying activities of the agents used it is concluded that the potentiating activity of muramyl peptides cannot yet be related to their immunoadjuvant action or their capacity to activate macrophages or to enhance nonspecific bacterial resistance. PMID- 3847291 TI - Conjugation of methotrexate to IgG antibodies and their F(ab)2 fragments and the effect of conjugated methotrexate on tumor growth in vivo. AB - Methotrexate (MTX) was first conjugated to antibovine serum albumin IgG (antiBSA) or its F(ab)2 fragment to define conditions for retention of drug and antibody activity. With identical drug: protein molar ratios, incorporation in the F(ab)2 fragment was lower than in intact antiBSA, an observation consistent with analysis of the number of lysine residues (22 in F(ab)2 compared to 40 in antiBSA). In either case, up to approximately 10 mol MTX could be incorporated per mol protein, with recovery of 70% of the protein. At an incorporation ratio of 6 mol MTX per mol protein, MTX-antiBSA retained 100% of antibody activity and MTX-F(ab)2-antiBSA retained 75%. MTX-antiBSA and MTX-F(ab)2antiBSA were equally potent in vitro inhibitors of dihydrofolate reductase. Conjugates prepared from antiEL4 IgG (AELG) and from F(ab)2AELG significantly increased survival in EL4 lymphoma-bearing mice compared with mice receiving equal amounts (5 mg MTX/kg) of free MTX, MTX linked to the F(ab)2 fragment of normal rabbit IgG, or a simple mixture of MTX and F(ab)2AELG. MTX-AELG at this dose level produced longer survival than MTX-F(ab)2AELG (0.005 less than P less than 0.01). PMID- 3847293 TI - How the continuing education process works. PMID- 3847292 TI - Secretory component in breast cancer. Analysis of the levels in primary and metastatic disease. AB - Levels of secretory component (SC) were measured in breast tumors from 95 patients with primary or metastatic cancer. Tumor cytosols were prepared by polytron disruption and high speed centrifugation (105,000 g X 30 min) and SC was measured using a sensitive radioimmunoassay which detects primarily free SC. In frozen samples stored for up to 5 months SC resisted degradation and could be measured quantitatively without interference. In primary tumors from patients between ages 28 and 97, SC positive samples ranged from 4 ng/mg protein to 600 ng/mg protein. In metastatic lesions, SC positive samples ranged no higher than 46 ng/mg protein. The studies indicate that SC can be measured quantitatively in both primary and metastatic tumors and that prolonged storage does not interfere with measurements of SC. The wide variation in SC levels in primary tumor samples may be related to a susceptibility to metastasis. Further, the low levels of SC in metastatic lesions could indicate a potential for SC involvement in immune regulation of tumor growth. PMID- 3847294 TI - Survey results of past and present applicants of CNA's approval process. PMID- 3847295 TI - Provision of CE: a bureaucratic nightmare. PMID- 3847296 TI - Symposium on pleural diseases. PMID- 3847297 TI - Exudative pleural effusions secondary to gastrointestinal diseases. AB - Several different diseases of the gastrointestinal tract may have an associated exudative pleural effusion. In the acutely ill patient with a pleural effusion, the possibility of esophageal perforation should always be considered. It is important to establish this diagnosis as soon as possible since the mortality rate increases markedly if drainage of the mediastinum is delayed for even 12 or 24 hours. The best screening test for esophageal rupture is the level of amylase in the pleural fluid. All patients with undiagnosed exudative pleural effusions should have the amylase level in their pleural fluid measured to rule out a pancreatic etiology for their pleural effusion. In patients with acute pancreatitis, the clinical presentation may be dominated by chest symptoms. Such patients have small to moderately sized pleural effusions that resolve rapidly once appropriate therapy is instituted. If symptoms persist, the possibility of a pancreatic abscess or a pancreatic pseudocyst should be considered. Patients with pancreatic pseudocysts may develop a sinus tract between the pseudocyst and the pleural space. In this situation a large pleural effusion develops. Frequently there are no abdominal symptoms and the diagnosis will not be made unless a pleural fluid amylase is obtained. Patients with exudative pleural effusions that contain predominantly polymorphonuclear leukocytes should be suspected of having an intra-abdominal abscess, particularly when there is no associated parenchymal infiltrate. Subphrenic, intrahepatic, and splenic abscesses all have a high incidence of accompanying pleural effusion. Abdominal CT scanning is the method of choice to establish each of these diagnoses. PMID- 3847298 TI - Nonmalignant pleural disease related to asbestos exposure. AB - Asbestos and other mineral fibers are well known to cause pleural changes. These changes are of various types, the most common being pleural plaques, which are slowly growing and of little clinical importance. Other benign changes include asbestos pleurisies, rounded atelectases, and other pleuropulmonary changes. PMID- 3847299 TI - Pneumothorax. AB - Pneumothorax is a common clinical problem encountered by both surgical and medical physicians. Air leaks into the pleural space occur either spontaneously or as a result of traumatic tears in the pleura following chest injury or surgical procedures. Therapy is directed at removing air from the pleural space, re-expanding the underlying lung, and preventing recurrences. PMID- 3847300 TI - Chylothorax and pseudochylothorax. AB - Both chylothorax and pseudochylothorax are characterized by milky or turbid pleural effusions. The importance of distinguishing these two conditions cannot be overemphasized because the prognosis and management are different. PMID- 3847301 TI - Transudative pleural effusions. AB - A transudative pleural effusion develops when the systemic factors influencing the formation or absorption of the pleural fluid are altered. The pleural surfaces are not involved by the primary pathologic process. The diagnosis of transudative effusion is simple to establish by examining the characteristics of the pleural fluid. Transudates have all of the following three characteristics: The ratio of the pleural fluid to the serum protein is less than 0.5. The ratio of the pleural fluid to the serum LDH is less than 0.6. The pleural fluid LDH is less than two thirds the upper limit of normal for the serum LDH. Among the conditions that produce transudative pleural effusion, congestive heart failure is by far the most common. Pulmonary embolism, cirrhosis of the liver with ascites, and the nephrotic syndrome are the other common causes. Management of transudative pleural effusions involves managing the primary disease. Refractory, massive effusions can be controlled by tetracycline pleurodesis. PMID- 3847302 TI - Parapneumonic effusions and empyema. AB - Nearly 50 per cent of patients with acute bacterial pneumonia have an accompanying pleural effusion (parapneumonic effusion). With appropriate antibiotic therapy, the pleural effusion will resolve along with the pneumonia in the majority of patients. However, in a small fraction, the pleural effusion will not resolve unless drainage of the pleural space is instituted. Such patients are said to have complicated parapneumonic effusions. It is important to identify patients with complicated parapneumonic effusions as early as possible, since tube drainage of the pleural space becomes increasingly difficult the longer its institution is delayed. The possibility of a complicated parapneumonic effusion should be considered in every patient with bacterial pneumonia. If both diaphragms cannot be distinctly identified throughout their length on the lateral chest radiograph, decubitus chest radiographs should be obtained. If the thickness of the fluid on the decubitus radiograph is greater than 10 mm, a diagnostic thoracentesis should be performed. Only pleural fluid analysis can identify patients with complicated parapneumonic effusions. Complicated parapneumonic effusions are characterized by low pleural fluid pH and glucose levels, a high pleural fluid LDH, and a positive Gram stain of the pleural fluid. Tube thoracostomy should be performed immediately in a patient with an acute bacterial pneumonia if the pleural fluid glucose is below 40 mg per 100 ml, the pleural fluid pH is below 7.00, or if the Gram stain of the pleural fluid is positive. Patients with pleural fluid pH above 7.20, pleural fluid LDH below 1000 IU per L, and pleural fluid glucose levels above 40 mg per 100 ml respond well to only the administration of appropriate antibiotics.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3847303 TI - Mycobacterial, fungal, actinomycotic, and nocardial infections of the pleura. AB - Granulomatous pleuritis is relatively common, comprising about 10 per cent of all pleural effusions. A search for the etiologic agent is important since mycobacteria, fungi, and the higher bacteria Actinomyces and Nocardia produce similar clinical, radiographic, and pleural fluid findings. The appropriate use of diagnostic tests including pleural biopsy and serologic techniques is discussed, as are current approaches to the management of these infections. PMID- 3847305 TI - [Psychocybernetics and nursing--in search of more meaningful encounters with patients]. PMID- 3847304 TI - Pleural effusion associated with pulmonary embolization. AB - Pulmonary embolization should be considered as a possible cause of any pleural effusion of unknown etiology. This disorder may be the one that is most commonly overlooked in the work-up of patients with pleural effusions. Although para embolic effusions have classically been considered to be bloody exudates with a predominance of polymorphonuclear leukocytes, many such effusions have none of these characteristics. Up to 25 per cent may be transudates and the RBC count exceeds 100,000 per mm3 in fewer than 20 per cent of such effusions. The WBC may range from less than 100 to more than 50,000 cells per mm3. Characteristics of these effusions are so variable that no diagnostic patterns can be said to occur. Paraembolic effusions usually begin to resolve within a few days after institution of anticoagulant therapy, although those that are associated with parenchymal infiltrates may resolve more slowly. Unless complications occur (which are rare), pulmonary embolism with associated pleural effusion is treated no differently than is pulmonary embolism without effusion. PMID- 3847306 TI - [Definition of psychiatry--establishment of scientific psychiatry(2)]. PMID- 3847307 TI - [Nursing study: case study series. 4. Part I. Application of 2 years of learning to clinical practice]. PMID- 3847308 TI - [Nursing study: case study series. 4. Part II. Comment on the students' reports]. PMID- 3847309 TI - [Nursing study: case study series. 4. Part III. Discussion on the application 2 years of learning to clinical practice]. PMID- 3847310 TI - [Care and man: on "listening"--through telephone conversations on the hot line]. PMID- 3847311 TI - Welfare benefits. Defying the directive. PMID- 3847312 TI - District nursing. Extra-sensory nurse. PMID- 3847313 TI - Community care. No place to go. PMID- 3847314 TI - Nursing process. For the record. PMID- 3847315 TI - Incontinence. Are they being served? PMID- 3847316 TI - Summer fever. PMID- 3847317 TI - Incontinence. Mix and match. PMID- 3847318 TI - Health visiting. From Alipor to Batley. PMID- 3847319 TI - Immunisation. Improving the uptake. PMID- 3847320 TI - Matters for concern. Training at the crossroads. PMID- 3847321 TI - Diabetic specialists--why not. PMID- 3847322 TI - Shaping the future of nursing through political awareness and action. PMID- 3847323 TI - A day in the life of Adelaide Chapman, R.N. PMID- 3847324 TI - These nurses are not teaching, they're doing. PMID- 3847325 TI - Elective cardioversion: a standard for patient care. PMID- 3847326 TI - Temporary A-V sequential pacing using an epicardial lead system. PMID- 3847327 TI - Acute tumor lysis syndrome: pathophysiology and nursing management. PMID- 3847328 TI - Transposition of the great arteries. PMID- 3847329 TI - Alternate considerations in the treatment of cholinesterase-inhibitor insecticide poisoning. PMID- 3847330 TI - Patient care conferencing. PMID- 3847331 TI - Rocaltrol (calcitriol/Roche). PMID- 3847332 TI - Mystery arrhythmia. PMID- 3847333 TI - Mini-EKG. PMID- 3847334 TI - The concept of crisis and the care of the critically ill patient. PMID- 3847335 TI - Microbial toxins and diarrhoeal disease. PMID- 3847337 TI - Staphylococcus aureus delta toxin as an enterotoxin. AB - The classical enterotoxins are known primarily for their ability to cause emesis and diarrhoea in cases of staphylococcal food poisoning but they also exhibit other biological activities. The seven antigenic types of toxin have molecular weights in the range 25 000-35 000. All types induce emesis in man and monkey and are of comparable potency. The enterotoxins seem to induce emesis by stimulating neural receptors in the intestine rather than acting on the medulla directly. The mechanism whereby diarrhoea is produced is unclear. Another product of Staphylococcus aureus which meets the more recent definition of an enterotoxin is the delta toxin. This toxin is an amphipathic peptide having an Mr of 2977 and possessing the ability to interact with a variety of hydrophobic substances. It is cytotoxic, can increase vascular permeability in guinea-pig skin, and can increase cellular cyclic AMP levels in guinea-pig ileum. In the ileum delta toxin also inhibits water absorption, apparently by increasing the bidirectional movement of Na+ and Cl- across the mucosa. This response does not appear to be mediated by cyclic AMP since the changes in ion fluxes precede the increases in cellular cyclic AMP levels. In high doses delta toxin also elicits a positive response in the neonatal mouse after intragastric inoculation. PMID- 3847336 TI - Shigella toxin and the pathogenesis of shigellosis. AB - Shigella dysenteriae 1 produces a periplasmic protein with multiple toxic effects in vivo and in vitro. These include neurotoxicity, cytotoxicity and enterotoxicity, as well as the ability to inhibit cell-free protein synthesis. The purified toxin is a protein of relative molecular mass (Mr) 64 000. It is composed of one catalytically active A subunit (Mr = 32 000) that inhibits protein synthesis, and a complex of five B monomers (Mr approximately 6500 each). Studies using subunit-specific antibodies demonstrate that the B subunit mediates the binding of toxin to toxin receptors in the cell membrane. In a model system in HeLa cell culture, the surface membrane receptor has been shown to be a glycoprotein, most probably asparagine-linked, and to contain oligomeric beta 1-- -4 linked N-acetyl-D-glucosamine. Studies with metabolic inhibitors and agents that disrupt the cytoskeleton, and/or alter the pH and function of acidic cytoplasmic vesicles, provide indirect evidence that toxin is transported from the cell surface to the cell interior. This process is probably receptor-mediated endocytosis, since it is also inhibited by amines that prevent receptor-mediated uptake of other ligands in well-characterized systems. The toxic action in the HeLa cell is due to the subsequent inhibition of protein synthesis which results from catalytic inactivation of the 60S ribosomal subunit and the cessation of polypeptide chain elongation. Inhibition of protein synthesis by toxin produced subsequent to bacterial invasion of colonic epithelial cells could explain the destructive lesions found in shigellosis. Although toxin can induce jejunal secretion in animal models, there is at present no clear explanation for the secretory response of the gut mucosa in shigella infection. PMID- 3847338 TI - Toxins which activate adenylate cyclase. AB - Cholera toxin and other heat-labile enterotoxins have the same subunit structure (A5B) and all catalyse the mono ADP-ribosylation of Ns, a regulator of adenylate cyclase, probably at an arginine residue. They also ADP-ribosylate a variety of other membrane and soluble proteins at much slower rates. The rates differ from protein to protein but it may be that every arginine residue in every protein is ADP-ribosylated at some slow rate. A guanine nucleotide triphosphate is required for the ADP-ribosylation of the major (Ns) and minor substrates alike. It used to be thought that all the substrates were GTP-binding proteins but this cannot be so. Rather, the GTP is required because it has to bind to some additional site on the membrane, termed 'S', in a cooperative event that involves a soluble protein called cytosolic factor (CF). If we expose erythrocyte membranes to CF and the GTP analogue Gpp(NH)p we can later extract in detergent a factor or complex that confers upon naive erythrocyte membranes the ability to be ADP-ribosylated. Pertussis toxin also has an A5B structure and acts on an intracellular substrate for ADP-ribosylation, namely the negative regulator of adenylate cyclase, called Ni. ADP-ribosylation prevents the reduction of cyclase activity by inhibitory hormones. The ADP-ribosylation of Ns or Ni does not affect the rate of ADP ribosylation of the other protein. PMID- 3847339 TI - Networking: reducing competition while increasing collegiality. PMID- 3847341 TI - Troubleshooting malfunctions of the dual-chambered pacemaker. PMID- 3847340 TI - Clinical assessment of pacemaker function: the ICHD code. PMID- 3847342 TI - Selecting a nursing diagnosis for changes in consciousness. PMID- 3847343 TI - Allocation of scarce resources: critical care nursing dilemma. PMID- 3847344 TI - Job sharing in critical care management. PMID- 3847345 TI - Parental environmental stress in pediatric intensive care units. PMID- 3847346 TI - Sleep apnea and related disorders. AB - This article has ranged far and wide, from the pickwickian patient weighing 500 pounds to the tiny 4-lb premature baby, but the common thread is cessation or diminution of breathing during sleep and consequent oxygen desaturation. Associations have been made between abnormalities of sleep and breathing and multiple diseases--some causative and some fortuitous. Despite relating this information, we are only beginning to understand sleep and breathing. Although we spend a third of our lives asleep, very little attention was paid to the study of sleep until the mid 1970s. Even to this day, there is little interest in snoring and its adverse effects. The situation may be a sexist one in which men have done the research and the snoring, but the snoring has bothered only women. I predict that the next 15 years will see a vast increase both in studies of sleep and in our understanding of the importance of breathing during sleep--to the well-being of all of us. PMID- 3847347 TI - A kinetic assay for human urinary kallikrein determination. AB - A simple kinetic method for human urinary kallikrein determination is proposed. In this assay, the release of p-nitroaniline from the chromogenic substrate S 2266 at 37 degrees C and pH 8.2 is followed spectrophotometrically at 405 nm. The delta A/5 min (0-5 min) interval was chosen. This assay was shown to have good sensitivity since enzyme concentrations as low as 0.00125 KU/ml could be measured. The use of dialyzed urines minimizes the interferences associated with high urinary salt concentration. Because of its precision and reproducibility, this kinetic assay may be proposed in clinical investigation. PMID- 3847348 TI - Biochemical research on oogenesis. Aminoacyl tRNA turns over in the 42-S particles of Xenopus laevis oocytes, but its ester bond is protected against hydrolysis. AB - The ester bond aminoacyl tRNA is protected against hydrolysis in the 42-S particles (thesaurisomes) present in Xenopus laevis previtellogenic oocytes. Deacylation of tRNA is very slow in vitro, unless ATP is present. ATP causes a partial turnover of aminoacyl tRNA in vitro, with no detectable decrease in the overall aminoacylation level of tRNA, which remains close to 100%. tRNA in the particles turns over rapidly in vivo. Since the ester bond of aminoacyl tRNA is stabilized inside the 42-S particles, this turnover cannot be a consequence of spontaneous deacylation of tRNA, followed by reacylation by the aminoacyl-tRNA synthetases associated with the particles. We rather consider this turnover as reflecting a true metabolic activity of the particles, and a direct or indirect involvement of these particles in the oocyte's protein-synthesizing system. PMID- 3847349 TI - Fertilization of a colchicine-treated gamete of the fern Marsilea vestita. AB - In the fern, Marsilea vestita, the addition of colchicine to the culture medium during the final stages of archegogenesis gives rise to a new distribution of cellular organelles and lipid droplets within the egg cytoplasm. These changes affect primarily the usually free space through which the spermatozoid moves towards the female nucleus. Depending on the length of the treatment this fertilization cone may disappear. Completion of fertilization, i.e. karyogamy, is only observed in the presence of this cone. When it is missing, progress of the male nucleus, which is no longer directly channeled towards the female nucleus, is notably slowed down and karyogamy does not occur. Then, male chromatin decondensation takes place in the egg cytoplasm. This event enables us to describe the structure of the sperm nucleus: it is composed of two cylindrical parallel units which, subsequently, break up into short fragments which may be the "male chromosomes". PMID- 3847350 TI - Conformational change of 50 S ribosomes on enzymatic binding of phenylalanyl tRNA. AB - Tight couple 70 S ribosomes are converted to loose couple ones on enzymatic binding of phenylalanyl-tRNA. Enzymatic binding at 0 degree C as well as nonenzymatic binding does not lead to any change. Further, no change takes place when the P site is occupied by N-acetylphenylalanyl-tRNA. Loose couple 70 S ribosomes are not affected by either enzymatic or nonenzymatic binding of phenylalanyl-tRNA. PMID- 3847351 TI - A somatic cell mutant with a kinetically altered 3-hydroxy-3-methylglutaryl coenzyme A reductase. AB - A somatic cell mutant has been isolated which is resistant to killing and growth inhibition by mevinolin, a competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase. The resistance phenotype is dominant with respect to the wild-type cell and can largely be ascribed to a 6-7-fold lowering of the KM for HMG-CoA. We thus conclude that mevinolin resistance can be utilized to obtain a genetic marker for the structural gene encoding HMH-CoA reductase. PMID- 3847352 TI - [Treatment and prevention of bronchial asthma]. PMID- 3847353 TI - [Viral hepatitis]. PMID- 3847354 TI - [Modern contraceptive means]. PMID- 3847355 TI - [Therapeutic use of ultrasound]. PMID- 3847356 TI - [Osteochondropathies]. PMID- 3847357 TI - [Characteristics of catarrhal diseases in persons working in a hot microclimate]. PMID- 3847358 TI - [Food poisonings of nonmicrobial etiology]. PMID- 3847359 TI - [Side effects of cardiovascular preparations]. PMID- 3847360 TI - [Hygiene instruction and education of pupils in light of the "Main trends in the Reform of the General Education and the Vocational School" (for World Health Day)]. PMID- 3847361 TI - [Epidemic control and disinfection measures in dermatomycosis]. PMID- 3847362 TI - [Vocational orientation of schoolchildren towards a medical specialty]. PMID- 3847363 TI - Acute renal dysfunction. Assessment of patients at risk. PMID- 3847364 TI - Simulated cardiopulmonary arrest. A planned learning experience. PMID- 3847365 TI - Creating a therapeutic environment during cardiopulmonary resuscitation. PMID- 3847366 TI - Antibiotic-related bleeding disorders. PMID- 3847367 TI - Sister Callista Roy influencing the direction of nursing. PMID- 3847368 TI - Part one. Statement on ethics in critical care research. AACN Task Force on Ethics in Critical Care Research. PMID- 3847369 TI - The efficiency of commercially available manual resuscitation bags. PMID- 3847370 TI - Goodpasture's syndrome. PMID- 3847371 TI - Promoting health--preventing illness. PMID- 3847372 TI - Patient teaching and nursing process. PMID- 3847373 TI - Patient education: barriers and gateways. PMID- 3847374 TI - Preparing BSN graduates to teach clients. PMID- 3847375 TI - How to decrease wandering, a form of agenda behavior. PMID- 3847376 TI - Asymmetry of brain metabolism and cognitive function. PMID- 3847377 TI - Dolls and toy animals for hospitalized elders--infantilizing or comforting? PMID- 3847378 TI - Heat waves threaten the old. PMID- 3847379 TI - Gerontological nurse practitioners past and present. PMID- 3847381 TI - Nutrition: salad sense. PMID- 3847380 TI - Assistive hearing device aids patient-staff communication. PMID- 3847382 TI - Identifying drug toxicity. PMID- 3847383 TI - Changes in serum levels of pancreatic isoamylase, lipase, trypsin, and elastase 1 after endoscopic retrograde pancreatography. AB - To compare the behavior of pancreatic enzymes in the circulation, serum levels of pancreatic isoamylase activity, lipase activity, immunoreactive trypsin (IRT), and immunoreactive elastase 1 (IRE) were measured in the same serum samples taken serially from 29 subjects undergoing endoscopic retrograde pancreatography (ERP). A striking correlation between the maximal increments of serum pancreatic enzyme levels after ERP and the degrees of opacification of pancreatic duct system was observed, except in 6 subjects with chronic pancreatitis. In 13 out of 19 subjects whose main pancreatic duct (MPD) and branches were opacified, serum pancreatic enzyme levels reached a peak within 2 hours after ERP and decreased thereafter. The mean maximal rise of serum levels of lipase, IRT, pancreatic isoamylase, and IRE in the 13 subjects was 32, 21, 10, and 4 times the basal value, respectively. A delay of peaking in serum levels of pancreatic isoamylase and IRE as compared with those of lipase and IRT was observed in the 13 subjects. The mean disappearance half-time of serum lipase, IRT, pancreatic isoamylase, and IRE in the 13 subjects was 2.8, 4.6, 8.0 and 16.0 hours, respectively. PMID- 3847384 TI - Practical products. PMID- 3847385 TI - Cold comfort. PMID- 3847386 TI - Controversy in education. Round-table discussion. PMID- 3847387 TI - 'It's never too late'. PMID- 3847388 TI - Effective policing--and gentle coaxing. PMID- 3847389 TI - Putting continence into practice. PMID- 3847391 TI - A randomized controlled trial of a new approach to preoperative teaching and patient compliance. AB - A randomized controlled experiment evaluating the effects of a new approach to preoperative teaching on patient compliance is described. In this study, compliance was measured by the accuracy, regularity and willingness that patients showed in execution of the prescribed activities after surgery. A significant difference was found between the experimental and control patients in the regularity, willingness and accuracy with which they performed the prescribed postoperative exercises. The experimental patients were significantly more satisfied with this approach to preoperative teaching than the control patients. This study is seen to have implications for both nursing education and nursing service. PMID- 3847390 TI - Subcellular localization and further characterization of a new elastase inhibitor from pneumococci. AB - Streptococcus pneumoniae contains an inhibitor of human neutrophil elastase. The agent does not inhibit other proteases, including neutrophil cathepsin G and pancreatic elastase. It is active in the presence of insoluble elastin as well as synthetic elastase substrates. The inhibitor is present in the pneumococcal cell membrane. [125I]elastase binding studies and inhibition experiments with intact bacterial autoplasts suggest that this agent has its elastase-binding site(s) exposed on the outside of the bacterial cell membrane. Native and randomized membrane vesicles also show equal inhibitory activity. Active inhibitor can be solubilized from pneumococcal membranes by treatment with a dipolar ionic detergent and can then be reconstituted, in active form, within artificial liposomes. Complex formation between the neutrophil elastase inhibitor and neutrophil elastase may involve noncovalent associations. Although elastase containing a covalently bound substrate analog no longer binds the pneumococcal inhibitor, the present study shows that complex formation is nevertheless independent of neutrophil elastase catalytic activity. Specific inhibitor activity and inhibitor release during bile salt-stimulated autolysis are greater in a nonnecrotizing pneumococcal strain (type I) than they are in a necrotizing strain (type III) or in Klebsiella pneumoniae. These results may help explain the frequent resolution of some pneumococcal pneumonias, despite the presence in the early pneumonic exudate of many neutrophils containing an elastolytic protease capable of injuring lung connective tissue. PMID- 3847392 TI - Contraceptive decision-making in urban, black female adolescents: its relationship to cognitive development. AB - Contraceptive education and accessible contraceptive methods have not reduced significantly the incidence of adolescent pregnancy. The cognitive development of adolescents makes contraceptive decision-making difficult. This study examined how cognitive development affected contraceptive decision-making among 86 urban black female adolescents attending three family planning clinics. Hierarchical multiple regression analyses revealed that the stage of cognitive development was the best predictor of contraceptive decision-making. Age and relevant sexual knowledge added to the explanation of decision-making variance. Potential nursing implications include: (1) screening of stage cognitive development prior to rendering care, (2) continuation of contraceptive education and (3) presentation of contraceptive education at appropriate cognitive levels. PMID- 3847393 TI - Self-esteem: a closer look at clinical interventions. AB - Self-esteem, a positive regard for oneself, is a universal need for every human being and a key component in restoring and maintaining mental and physical health. Yet, this important concept is remarkably neglected in nursing literature and easily overlooked in clinical practice. This article examines the existing research on the antecedents of self-esteem and compiles a list of factors which can facilitate the nurse's therapeutic effect on her client's positive self concept. From this list, specific nursing interventions are provided for raising and maintaining a client's self-esteem. Since the impact of nursing interventions varies with clinical circumstances, the nursing actions are correlated with their most effective health care settings. This article provides a global and practical approach to the enhancement of clients' self-esteem. PMID- 3847394 TI - The experience of being hospitalized: stress, social support and satisfaction. AB - In this paper, an exploratory study, relationships among patient stress, social support and satisfaction are discussed. During 1980, 100 medical patients on two companion units of a large northeastern teaching medical center were given the Volicer Hospital Stress Scale. Several questions about satisfaction and the support of family/friends and other patients were asked. Other variables descriptive of the experience of being hospitalized are also looked at. Stress scores for patients on both units were high. Black patients, specifically those on one unit, had higher mean stress scores than whites; items on which the racial groups differed focused upon environment and staff-patient interaction. Relationships were found between (a) the potential social support of family/friends and of other patients, (b) family/friends' support and overall satisfaction level and (c) other patients' support and stress. Other relationships among descriptive variables of the hospitalization experience were also identified. It is recommended that the identified race-stress, family/friends' support-satisfaction and patients' support-stress relationships be further explored. PMID- 3847395 TI - Social support network of Taiwanese cancer patients. PMID- 3847396 TI - The concept and practice of preceptorship in contemporary nursing: a review of pertinent literature. AB - The authors review 21 articles on preceptor programs in schools of nursing and service settings. They provide comparative details of various aspects of preceptor programs but particularly emphasize, first, the ways in which preceptors are trained and secondly, the content of preceptor training programs. The purpose of the review is to help administrators set up preceptor programs in their own localities. PMID- 3847397 TI - The effective training of nurses: manpower implications. AB - In a period of scarce and shrinking resources, manpower planning is of great importance. One aspect of nurse manpower planning is to ensure that the clinical learning environment is adequate in terms of qualified nursing staff. A recent, detailed study of nurse training in the clinical area has highlighted the effects of manpower shortages in nurse education in the clinical area. It is argued that any further cuts in nurse manpower levels will have a direct, detrimental effect on the clinical learning environment, and this is illustrated by findings from the nurse training study. It is further suggested that the manpower problems of urban hospitals are often masked by discussion of manpower in terms of regional staffing levels. PMID- 3847398 TI - Nurse-patient communication skills in Northern Ireland--the educational problems. AB - Northern Ireland forms a discrete province within the U.K., with its own National Board (forming part of the United Kingdom Central Council for Nursing, Midwifery and Health Visiting) and its own training syllabus. This study is an appraisal of the current state of teaching nurse-patient communication skills in the province's six colleges/schools of nursing. Questionnaire samples were taken and analysed from student nurses (251), nurse tutors (35) and clinical teachers (36) in order to: (i) elicit the specific responses of both students and teachers concerning their perceived value of teaching/learning communication skills and (ii) to establish the existing satisfaction/dissatisfaction levels within the province on the current teaching practice of these interpersonal skills. PMID- 3847399 TI - Risk of hepatitis B acquisition among hospital staff. PMID- 3847400 TI - The drainage bag additive saga . PMID- 3847401 TI - Evaluation of H2O2 prophylaxis of bacteriuria in patients with long-term indwelling Foley catheters: a randomized controlled study. AB - Since the long-term catheterized patient is at significant risk of urinary tract infection, and the catheter drainage bags of these patients are at significant risk of becoming reservoirs for nosocomial pathogens, we carried out a randomized, controlled study to determine the efficacy of intermittent drainage bag instillation of hydrogen peroxide (H2O2) in patients requiring indwelling Foley catheters for 5 days or more. Herein we report the effects of this technique on the rates of catheter and bag bacteriuria, the duration to positive culture, the temporal relationships observed, and the spectrum of organisms recovered. Bag source bacteriuria was found with the same frequency in both control and H2O2 groups. H2O2 did reduce contamination of the drainage bag but did not reduce catheter-associated bacteriuria or frequency of symptomatic urinary tract infection. Furthermore, H2O2 did not reduce the frequency of bag contamination with most of the common nosocomial urinary pathogens. PMID- 3847403 TI - Evidence for the non-infectious etiology of early postoperative fever. AB - In a prospective study of infections in 871 general surgery patients, we identified 81 patients who developed unexplained postoperative fevers. The majority of these episodes (72%) occurred early (within the first 48 hours) following surgery. Patients who developed early, unexplained fevers differed significantly from patients who developed documented postoperative infections. Patients with unexplained fevers were younger, had less severe underlying disease and underwent less extensive surgeries than patients who subsequently developed infections. In these respects, they were more similar to non-infected, non febrile patients. We concluded that episodes of early, unexplained postoperative fever occur frequently in a wide range of general surgery patients. Most of these episodes are non-infectious in origin. Patients with early postoperative fevers should be evaluated to identify any obvious sources of infection. If no focus is identified, empiric antibiotic therapy should not be initiated nor should prophylactic antibiotics be extended for prolonged durations. Unexplained fevers will resolve in time without specific therapeutic interventions. PMID- 3847402 TI - A comparison of pneumonia caused by gentamicin, methicillin-resistant and gentamicin, methicillin-sensitive Staphylococcus aureus: epidemiologic and clinical studies. AB - We investigated an outbreak of nosocomial pneumonia due to gentamicin, methicillin-resistant Staphylococcus aureus (GMRSA). We compared the predisposing factors for pneumonia due to GMRSA to those for pneumonia due to gentamicin, methicillin-sensitive Staphylococcus aureus (GMSSA). Seventeen of 29 patients with staphylococcal pneumonia were infected with GMRSA. Risk factors and associated diseases which selected for infection with GMRSA as opposed to GMSSA included prior antibiotic therapy for a prolonged period of time (p = 0.0001), number of risk factors per patient (p = 0.0001), days hospitalized prior to diagnosis of pneumonia (p = 0.002) and number of associated diseases per patient (p = 0.002). Despite the epidemiologic differences between GMSSA and GMRSA pneumonia, there were no differences in the clinical presentation, course of illness, complications, response to appropriate therapy or outcome between the two groups. Survival was adversely affected by age only among the GMSSA patients (p = 0.02) and by the number of associated diseases (p = 0.005). PMID- 3847405 TI - Selection of closed urinary drainage systems--an update. PMID- 3847404 TI - Nosocomial fungal infection during hospital renovation. AB - Nosocomial fungal pulmonary infections (Zygomycetes, Aspergillus sp.) developed in two premature infants in a special care unit (SCU) adjacent to an area of renovation. Inspection showed that inadequate barriers permitted the passage of airborne particles between the two areas, and cultures confirmed a significantly higher (p less than or equal to 0.05) density of mold spores in the SCU (0.88 cfu per hour per settling plate) compared to a construction-free comparison area (0.22 cfu per hour per settling plate). The major source of mold was the dust above the hospital's false ceiling. In another construction area, imperious barriers were shown to effectively restrict the dispersal of mold. Our experience adds Rhizopus to Aspergillus as a possible cause of construction-related nosocomial infection. Sporadic episodes will continue to occur until the hazards of renovation are appreciated and effective preventive measures are routinely instituted. PMID- 3847406 TI - What does the SEW programme mean to you? PMID- 3847407 TI - Accountable to whom? PMID- 3847408 TI - AIDS. PMID- 3847409 TI - Return to Aswan: picking up the threads. PMID- 3847410 TI - Who works for WHO? PMID- 3847411 TI - Understanding upper rate responses of DDD pacers. AB - Understanding upper rate responses should not be a frustrating experience. A thorough working knowledge of DDD pacer timing cycles is recommended before attempting to assimilate this information. Anyone involved in the interpretation and troubleshooting of DDD pacer ECGs should be familiar with these four basic upper rate responses. As shown in Table I, these responses are used to limit the upper ventricular tracking rate in various pacer models either as a single option or in combination. The operation of combined upper rate responses can be difficult to interpret. If the initial acceleration of the atrial rate is available from a Holter monitor or a standard electrocardiographic recording, the fallback response can be easily detected as the transition from pacing at the upper rate limit to the fallback rate. When this transition is not observed and the timing cycle indicates a Wenckebach-type behavior at a ventricular-paced rate of 80 pulses/min, the fallback response can be suspected because programming an upper rate limit of 80 pulses/min would be unusual. Rate smoothing is more difficult to detect when the tachycardia is accelerating. Wenckebach behavior may be observed as the ventricular pacing rate increases according to the smoothing constant. Rate smoothing can be suspected if Wenckebach behavior is observed as the ventricular pacing rate increases from cycle to cycle. Fig. 1 attempts to clarify similar characteristics of the four upper rate responses. It also provides rudimentary differences in characteristics of the four responses and guidelines for interpretation. Furthermore, it should be used as a quick reference to determine the criteria for each response.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3847412 TI - Hemodynamic instability associated with balloon catheter traction after transurethral surgery. AB - Severe vasovagal reactions were experienced by three patients in whom balloon catheter traction was used to assist hemostasis after transurethral procedures. Release of catheter traction, along with conventional resuscitative measures, led to resolution of cardiovascular instability. Prompt recognition of the potential relationship between vasovagal reactions and parasympathetic stimulation that may accompany bladder base compression by catheter balloon is emphasized. PMID- 3847413 TI - Oxygen desaturation during ventilator circuit changes. PMID- 3847414 TI - Working with the family of a critically ill child. PMID- 3847415 TI - Hyperinflation, hyperventilation, and hyperoxygenation before tracheal suctioning in children requiring long-term respiratory care. AB - The findings reported failed to support a best method of pretreating subjects before tracheal suctioning to minimize oxygen desaturation. Conversely, all methods prevented significant desaturation. No subject's desaturation readings dropped during the study to such a point that they did not subsequently recover after 30 seconds and return to baseline by the end of the 20 minutes. Several subjects had oxygen saturation readings in the high 70s to low 80s as reported during CTP. After recovery from CTP ( in mot cases a 30-second time period), no clinically significant desaturation was noted from the 30-second time period to the end of the study. The results could not be reproduced when the trials were repeated on four subjects. If oxygenation is questionable, these children should be monitored noninvasively to prevent serious desaturation in an already compromised patient. PMID- 3847416 TI - Prospective randomized evaluation of two methods of drawing coagulation studies from heparinized arterial lines. AB - To establish a standardized protocol of obtaining coagulation studies from arterial lines without heparin contamination, two methods were evaluated in a prospective randomized fashion for accuracy by comparing PT and aPTT results with simultaneous samples drawn by venipuncture. Fifty paired samples were obtained, 25 by method A and 25 by method B, from critically ill patients in the surgical intensive care unit at City of Memphis Hospital. Analyses of PT and aPTT from these samples revealed a close statistical correlation with the venous controls and no clinically significant difference between the samples. PMID- 3847417 TI - An evaluation of an inpatient cardiac patient/family education program. AB - A study to (1) evaluate the impact of a patient education program on the patient's knowledge regarding his/her illness and (2) identify obstacles to compliance behavior after discharge was conducted over a 2-year period. A population of 342 patients with ischemic heart disease was assigned to an inpatient cardiac patient education program consisting of five daily 1-hour classes. The following patient data were gathered: (1) assessment of the individual's knowledge of his/her illness; (2) selected sociodemographic information, (3) measures of general intelligence and problem-solving ability, and (4) motivation to alter risk factors. A measure of compliance with the prescribed treatment plan was obtained by telephone for all patients 4 weeks after discharge. Patients were randomly assigned such that one group received a pretest and a posttest assessment of knowledge while a second group received only the posttest assessment. A difference score t test on knowledge scores was statistically significant. A regression analysis of predictors of overall compliance scores after discharge demonstrated that indicators of motivation were most highly correlated with compliance. It was concluded that additional research is needed to identify: (1) types of information that enhance the patient's awareness of his/her illness and (2) program structures and techniques that enhance patient motivation to comply with a prescribed treatment plan. PMID- 3847418 TI - Ventricular arrhythmias: a perspective on management. AB - Antiarrhythmic drugs are associated with a significant incidence of arrhythmogenic effects, as well as other cardiac and extracardiac side effects. Thus, it is important that the decision to treat ventricular arrhythmias be made on the bases of the frequency of the arrhythmia, its qualitative features, and the presence or absence of underlying heart disease. These features influence the risks of sudden arrhythmogenic death. PMID- 3847419 TI - Clinical manifestations of myxoma. PMID- 3847420 TI - Support for the family of the dying patient. PMID- 3847421 TI - Home peritoneal training and the community nurse. PMID- 3847422 TI - Supervising the hemodialysis client in self medication in the home. PMID- 3847423 TI - A cooperative volunteer training program. PMID- 3847424 TI - Multiphasic health screening for the rural elderly. PMID- 3847425 TI - Amyotrophic lateral sclerosis. PMID- 3847426 TI - [Seminar in medical research on women, Sigtuna, 11-13 October 1984]. PMID- 3847427 TI - [Towards the year 2000]. PMID- 3847428 TI - [Harmful effects of mercury on the fetus]. PMID- 3847429 TI - [Internationalization of midwifery education]. PMID- 3847430 TI - [Exchange of experience between Zambian and Swedish midwives--a method to test the Swedish college's regulations of internationalization goals]. PMID- 3847431 TI - [Finding knowledge--lacking resources]. PMID- 3847432 TI - [Infant care from the Arctic in the North to Australia in the South]. PMID- 3847433 TI - [Mapping of psychosocial factors in relation to infant colic. Summary of the project plan for health care research]. PMID- 3847434 TI - [Impressions from a study trip to the USA]. PMID- 3847435 TI - [Report from a study trip to Seattle, Washington USA]. PMID- 3847436 TI - [Away from the hospital]. PMID- 3847437 TI - [The art of delivery in international perspective]. PMID- 3847438 TI - Activity of novobiocin against methicillin-resistant Staphylococcus aureus. AB - As infections due to methicillin-resistant Staphylococcus aureus become increasingly prevalent, newer alternative antibiotics, especially those which are orally administered, will be required. In order to provide an in-vitro basis for selecting alternative antibiotics, we studied the susceptibility of 103 strains of methicillin-resistant Staph. aureus from seven institutions to oral antimicrobial agents. Novobiocin, rifampicin, and trimethoprim-sulphamethoxazole had excellent in-vitro activity against virtually all strains of methicillin resistant Staph. aureus. The MIC90 and MBC90 of novobiocin against methicillin resistant Staph. aureus were 0.25 mg/l. Since previously reported achievable serum levels with oral novobiocin are 100 to 200 times its MIC90 against methicillin-resistant Staph. aureus, novobiocin should be evaluated further for combination therapy with rifampicin or trimethoprim-sulphamethoxazole. PMID- 3847439 TI - Resistance in oral streptococci after repetition of a single-dose amoxycillin prophylactic regimen. AB - Ten healthy volunteers received 3 g amoxycillin each week for up to four weeks. One volunteer carried streptococci resistant to amoxycillin in small numbers before the first dose was administered. After one administration of amoxycillin, this volunteer and one other yielded streptococci resistant to 1 mg/l amoxycillin on direct culture of dental plaque; after two administrations, resistant streptococci were detected in one further volunteer; and a total of six volunteers yielded resistant streptococci after the fourth week of amoxycillin administration. Repeated use of the single-dose prophylactic regimen encourages the emergence of streptococci considerably more resistant to amoxycillin than those generally encountered in the oral cavity, but the clinical significance of these results is uncertain as the peak serum concentrations of amoxycillin achieved after a 3 g oral dose for prophylaxis exceed the minimum bactericidal concentrations of amoxycillin for these strains. PMID- 3847440 TI - Structure and function of human low density lipoproteins. Studies using proteolytic cleavage by plasma kallikrein. AB - Kallikrein digestion of human low density lipoproteins (LDL) has recently been shown to result in the degradation of apolipoprotein B (apo-B) into four major fragments, two of them being B-26 and B-74, which have been reported to be present in the LDL of some individuals. We studied the binding of kallikrein treated LDL to human fibroblasts; digestion did not affect binding. Digested LDL was not taken up by macrophages, showing that it behaved like normal LDL. The activation of acyl-CoA cholesterol acyltransferase by LDL in fibroblasts was also not altered by kallikrein digestion. When delipidated LDL was treated with kallikrein, apo-B was digested into very small fragments, indicating that kallikrein can cleave apo-B at sites other than those which result in the formation of B-26 and B-74. The partial delipidation of LDL with heptane also resulted in more extensive digestion of apo-B, although binding to cells was unaffected. These studies suggest that the cholesterol core maintains the proper orientation of apo-B in the LDL particle and that kallikrein may be used as a tool to elucidate the association of apo-B and lipids in the LDL particle. PMID- 3847441 TI - A descriptive study of faculty tenure in baccalaureate and graduate programs in nursing. PMID- 3847442 TI - A national survey of the need for doctorally prepared nurses in academic settings and health service agencies. PMID- 3847443 TI - Financing mechanisms for health care: impact on nursing services. PMID- 3847444 TI - Legal and ethical matters. By what authority? PMID- 3847445 TI - Preparation of practitioners, clinical specialists, and clinicians. PMID- 3847446 TI - Defining the nursing dean's role. PMID- 3847448 TI - The evolution of competence in practice. PMID- 3847447 TI - A proposal for an educational program to assist asthmatic students in reaching their full potential. PMID- 3847449 TI - The deanship and the promotion of scholarship in nursing. PMID- 3847450 TI - Dealing with tenured faculty. PMID- 3847451 TI - Issues in doctoral preparation in nursing: current perspectives and future directions. PMID- 3847452 TI - A logo to represent nursing research. PMID- 3847453 TI - Quality in doctoral education. PMID- 3847454 TI - Nurses' participation in international and transcultural nursing. PMID- 3847455 TI - Ethics, values, and rights. PMID- 3847456 TI - The overstudied dean--myth or fact? PMID- 3847457 TI - The incongruency between education and practice expectations for the professional nurse. PMID- 3847458 TI - President vetoes Institute of Nursing and the Public Health Service Act. PMID- 3847459 TI - A typology of nursing research activities according to educational preparation. PMID- 3847460 TI - Assessment of loneliness and spiritual well-being in chronically ill and healthy adults. PMID- 3847461 TI - Confidentiality and customary practices. PMID- 3847462 TI - Proceedings of doctoral programs in nursing: consensus for quality. PMID- 3847463 TI - The nature of the doctorate and criteria for quality. PMID- 3847464 TI - Optimized determination of plasma prokallikrein on a Hitachi 705 analyser. AB - Manual determination of plasma prokallikrein using a chromogenic substrate is tedious. We describe the optimal conditions of enzymatic quantification by a fully automated method enabling rapid availability of the results and an easier estimation of this interesting compound in clinical chemistry. PMID- 3847465 TI - Tension pneumocephalus. AB - Tension pneumocephalus occurs when intracranial air exists under pressure, resulting in neurologic deterioration. The syndrome is precluded by an extracranial-intracranial communication and a difference in extracranial intracranial pressure with the latter being greater. Although most frequently associated with head trauma, a variety of situations, including an operative sitting position and use of nitrous oxide anesthesia, have been known to contribute to this potentially life-threatening complication. This article will address pathogenesis, assessment parameters, and medical and nursing approaches utilized to reduce and minimize further entrapment of air. A case report will be presented illustrating this condition. PMID- 3847466 TI - Selected postoperative complications of cranial surgery. AB - Selected postoperative complications following a craniotomy are discussed in relation to assessment and nursing care. Clinical differentiation between structural and metabolic postoperative complications is emphasized. The signs, symptoms, diagnostic aids and nursing implications related to each of these two major classifications of complications are presented. The specific postoperative complications discussed include: cerebral edema, intracranial bleeding, hydrocephalus, cerebral infarction, tension pneumocephalus, hypoxia, water and electrolyte imbalances, hypoglycemia, endocrine disturbances, hyperthermia, and seizures. PMID- 3847467 TI - Complications of transsphenoidal surgery. AB - Transsphenoidal surgery has many advantages in providing access to the sella turcica. It is associated with relatively low morbidity and mortality but it should be recognized that it is not without risk. Often, signs and symptoms of complications from transsphenoidal surgery are observed by the nurse. With early detection and prompt management, patients need not suffer the serious disabilities that may ensue. PMID- 3847468 TI - Nursing update on Alzheimer's disease. AB - There are many important issues to be addressed in the relationship between families and health professionals. These include supporting each other without impairing each other and reciprocity with regard to learning and respect for each other. The nurse's role is vital. Nurses can build a partnership with the person, and their family because they have a major role in supporting the family, providing them with information, and directing them to the services they need. Nursing schools may need to re-evaluate their curricula to prepare individuals for this responsibility. Nurses may experiment with innovative approaches to care. Such innovations can then be evaluated by both families and professionals. The medical, social, and nursing implications of Alzheimer's disease are staggering. Surveys indicate that this disease probably affects more than a million people in the United States. These people and their families need supervision and care. It is hoped that this review will increase nurses' understanding of the disease process and that recent advances in research may stimulate further investigations in this still largely unexplored illness. The description of nursing care herein provided will enable clinicians to better serve Alzheimer's patients and their families. PMID- 3847469 TI - Safety assessment for the postictal confusional phase following complex partial seizure. AB - Misunderstanding of the postictal confusional state that follows the complex partial seizure has caused emotional and physical harm to patients. Concern about this phenomenon and its effects upon the patient prompted this study to explore, describe, and document one method of intervention to lessen these harmful effects. An evaluative descriptive research design was employed to assess patient safety during and after the postictal confusional phase following a complex partial seizure. A closed-structured questionnaire and participant observation were the methods used to collect data for this study. A Level of Safety Tool was specifically designed for this study. PMID- 3847470 TI - Drug stop: newer beta-lactam antimicrobials. AB - The newer beta-lactam antimicrobials offer an expanded spectrum of activity and a similar safety profile compared to their older counterparts. The penicillins appear to be useful in the combination treatment of systemic Pseudomonal infections, and cefuroxime and the third generation cephalosporins may be valuable in the management of meningitis caused by susceptible organisms. However, to avoid the emergence of resistance and to help contain the cost of antimicrobial therapy, these newer agents should be reserved for those clinical situations where older beta-lactams would not be indicated. PMID- 3847471 TI - Economic security benefits for certified nurse-midwives. Whose responsibility? PMID- 3847472 TI - Routine prophylactic episiotomy. Is it always necessary. PMID- 3847473 TI - Effects of a nutrition intervention program during pregnancy. Maternal data phases 1 and 2. PMID- 3847474 TI - The Yale Nurse-Midwifery Practice. Addressing the outcomes. PMID- 3847476 TI - The bias coin design. PMID- 3847475 TI - Perceptions of role conflict between obstetric nurses and nurse-midwives. PMID- 3847477 TI - Six elements of improved recordkeeping. PMID- 3847478 TI - Development of a perinatal grief checklist. AB - The perinatal nurse faces one of the most difficult tasks in caring for families surviving the death of a newborn. This situation generates anxiety, depression, and frustration unless a plan designed for such situations is available. At Woman's Hospital of Texas, a group of nurses worked together to develop a tool to use as a guide through a difficult but meaningful nursing intervention. The process of the development and use of the Perinatal Grief Checklist is described. PMID- 3847479 TI - Primary nursing in the infant special care unit. AB - Primary nursing is the involvement of one registered nurse in the 24-hour care of a patient throughout the hospital stay. The role of the primary care nurse and how that role evolved in an infant special care unit is described. PMID- 3847481 TI - Breast-milk jaundice. AB - The syndrome of breast-milk jaundice, which often results in cessation of breastfeeding, maternal anxiety, and guilt, may be increasing. Research to date on pregnanediol, increased lipase, and free fatty acids as the causes of breast milk jaundice is reviewed. Variations in current treatment are presented and nursing measures supportive of parents and continued breastfeeding are provided. PMID- 3847480 TI - Infertility associated with luteal phase defect. AB - Infertility, either primary or secondary, affects approximately 15% of the population of childbearing age. Luteal phase defect, a deficiency of corpus luteum progesterone steroidogenisis, is noted in cases of primary infertility and in approximately 35% of couples who have experienced recurrent miscarriage. Supplemental progesterone therapy before implantation and continued into early pregnancy helps these couples to achieve a successful pregnancy outcome. The nurse can function as a pivotal member of the health-care team by providing the couple with appropriate education, counseling, and emotional support. Clinical manifestations of luteal phase defect and nursing interventions used in a case study are presented. PMID- 3847482 TI - An exploratory study of antenatal preparation for cesarean birth. AB - An exploratory study was designed to develop and test an antenatal education program of cesarean birth information. Eighty-one pregnant women and their husbands received the educational program. Eighteen couples experienced cesarean childbirth. Mailed questionnaires containing items dealing with reactions to the educational program and responses to cesarean birth were returned by 15 of these couples. Findings indicated that the educational program met most of the information needs of the study participants. Both mothers and fathers exhibited adaptive and ineffective responses to the cesarean, although the responses were more positive than previous studies have reported. PMID- 3847483 TI - Creative grandparenting. Bonding the generations. AB - Grandparents are a vital link for young families. The support grandparents can provide to the new family is now more important than ever. A creative grandparenting program can increase the likelihood that grandparent support is effective and welcomed. This article includes a discussion of such a program, suggested content areas to include, and the development of appropriate teaching strategies. PMID- 3847484 TI - Theoretical foundations of a prepared sibling class. AB - Family-centered maternity care is a frequently used phrase, yet children, an integral part of the family, are not always involved in formal preparation for a new infant. Should children be included in the preparation for a new arrival? A formal assessment to answer this question led to the planning and implementation of a Sibling Preparation Class. This article discusses objectives with implementation methods and correlates their direct application to class content. Nursing implications and suggestions for further research are included. PMID- 3847485 TI - Childbirth education classes: expectant parents' expectations. AB - One hundred clients (43 fathers, 57 mothers), of whom 50 had enrolled in childbirth education classes but had not yet attended and 50 who had attended and were parents of a healthy infant, were surveyed to find out what clients expect to gain from attending childbirth education classes. Responses of preclass and postdelivery male and female clients were compared using content analysis and chi square statistics. Results suggest that interest followed pregnancy chronology, fathers expected to learn facts, mothers expected to learn coping strategies, and both expected to learn breathing, relaxation, and infant care techniques. Although clients felt that more time should have been spent on the majority of topics, 64% of mothers and 53% of fathers said that the classes had met their expectations. PMID- 3847486 TI - A prospective randomized comparison of cefotaxime vs ampicillin and chloramphenicol for bacterial meningitis in children. AB - Fifty children with bacterial meningitis were prospectively randomized to receive cefotaxime (50 mg/kg/dose every 6 hours) or ampicillin and chloramphenicol in standard doses. Twenty-three patients received cefotaxime and 27 received standard therapy. Bacterial isolates included: Haemophilus influenzae (29), Streptococcus pneumoniae (eight), Neisseria meningitidis (eight), group B streptococci (three), and Salmonella enteritidis (two). Ten (34%) of the H. influenzae isolates were resistant to ampicillin, nine on the basis of beta lactamase production. All strains were susceptible to cefotaxime. Clinical cure rates for the cefotaxime (100%) and standard therapy (96%) groups were similar; survival without detectable sequelae was similar, at 78% and 77%, respectively. The duration of therapy, 11.1 +/- 2.4 days (range 10 to 21 days) vs 11.9 +/- 3.9 days (range 10 to 21 days), and days to defervescence, 4.7 +/- 2.6 days (range 1 to 14 days) vs 5.6 +/- 2.9 days (range 2 to 17 days), were similar in the cefotaxime and standard therapy groups, respectively. No adverse drug reactions or side effects were noted in either group. Cefotaxime was found to be as safe and effective as standard therapy for the treatment of bacterial meningitis in children. PMID- 3847488 TI - Infanticide: murder or mercy? PMID- 3847487 TI - Effects of betamethasone and ritodrine on the fetal secretion of lung surfactant. AB - Beta-sympathomimetic drugs and glucocorticoid agents are given in preterm labor to prevent severe consequences of prematurity. It is unclear whether beta sympathomimetics accelerate lung maturation, or whether they only tend to delay preterm delivery. We have evaluated the effects of betamethasone and ritodrine in rabbits on alveolar lavage phospholipids in premature rabbits, a mean of 28.7 days from conception. Betamethasone given to 26-day-old fetuses increased the surfactant phospholipids, phosphatidylinositol and disaturated phosphatidylcholine; increased disaturated phosphatidylcholine/sphingomyelin ratio, and phosphatidylinositol (percent of phospholipids), as compared to untreated littermates, or to saline treated controls. A low dose of ritodrine given to the pregnant doe, and a high dose given at premature birth had no detectable effects on alveolar lavage phospholipids. However, a high dose of ritodrine given one day before the delivery to the fetus and at premature birth decreased the disaturated phosphatidylcholine/sphingomyelin ratio and phosphatidylinositol in alveolar lavage. While glucocorticoid administration increases the synthesis and secretion of surfactant phospholipids, a high dose of a betasympathomimetic drug may decrease the surfactant. However, spontaneous premature labor is associated with accelerated lung maturation, and accordingly the present results do not contradict the use of a low dosage of betasympathomimetic drug to delay preterm delivery. PMID- 3847489 TI - Fired: should a nurse fight back? PMID- 3847490 TI - When children die. How a friend can help. PMID- 3847492 TI - A quick response to snakebite! PMID- 3847491 TI - Visual problems of the elderly: what is the nurse's role? PMID- 3847493 TI - In the field/on the floors. Dimensions of nursing told by nurses themselves. PMID- 3847494 TI - Rugged lives. PMID- 3847495 TI - Oncogenes: carriers of cancer. PMID- 3847496 TI - Pain needs of cancer patients. PMID- 3847497 TI - A survivor's own words. PMID- 3847498 TI - Why a psychogeriatric unit? PMID- 3847499 TI - China. Psychosocial nursing in the People's Republic. PMID- 3847500 TI - Laura LeWinn, JD, on Doe vs. Klein. Laying down the law on the rights of psychiatric patients. PMID- 3847501 TI - First rate: exploring the structure, process, and effectiveness of nurse psychotherapy. PMID- 3847502 TI - A comparison of deep-heating electrode concepts for hyperthermia. AB - There is mounting evidence that localized hyperthermia produced by electromagnetic waves may be useful in the treatment of cancer, and many innovative devices have been designed for this purpose. Most applicators employed for deep heating operate in the frequency region of 10-100MHz to provide greatest depth of penetration. Two basic categories of launching devices exist: E-field and H-field. The E-field applicators include conductive plates and fringing field devices; either may be used individually or in a multiple feed system. The H field applicators include cylindrical and planar devices configured to produce specific heating patterns. We have analyzed and compared the performance of each of these devices, particularly in terms of engineering principles, design characteristics and their ability to transfer potentially therapeutic energy safely and at depth. PMID- 3847503 TI - Safety of 9.3-GHz microwave radiant heating for possible caloric supplement and medical treatment. AB - The hematological and blood-chemistry effects of chronic microwave radiation on unrestrained rhesus monkeys trained to expose their face and eyes to 9.3GHz microwave radiation at an average incident power density of 150 or 300mW/cm2 are reported. Only inconsistent transient effects were found. The lack of significant hematological effects, together with the lack of ocular or behavioral changes reported earlier, support the idea that microwave frequencies in the range of 10GHz may be safe to use for caloric supplement of hypothermic individuals and medical patients. PMID- 3847504 TI - Better simple models of human radiofrequency absorption rates for E-polarization at quasi-static frequencies. AB - The existing theory for the quasi-static absorption rate of a lossy dielectric ellipsoid in E-polarization is extended to include cylinders of finite length. The key variable affecting the normalized specific absorption rate (NSAR) of an ellipsoid, prolate spheroid, or cylinder, is shown to be the axial ratio, R = (length/diameter). Very simple formulas are deduced for the NSAR of a prolate spheroid or cylinder with R greater than 6. The quasi-static calculations are confirmed by measurements of the NSAR of a human-sized ellipsoid, prolate spheroid, and cylinder exposed inside a very large TEM cell. The three simple models can only account for between twenty and fifty percent of the measured human NSAR at 10MHz when the standard-model axial ratio of R = 6.34 is used. The best simple models for the quasi-static human absorption rates in E-polarization are shown to be an ellipsoid with R = 9.4 and a cylinder with R = 8.5. PMID- 3847505 TI - Computer simulation for local temperature control during microwave-induced hyperthermia. AB - A numerical procedure to calculate and control transient temperature profiles in plane multilayered biological tissue is described. To express the temperature increase in the normal and neoplastic tissue as a function of time-varying incident microwave heating and artificial surface cooling, a semi-discrete finite difference method is used. Two optimization algorithms are applied in order to achieve and maintain a prescribed temperature pattern. They suggest the extent to which the tissue heating profiles can be experimentally controlled. Several examples are included to illustrate the performance of the algorithms. PMID- 3847506 TI - Low-power 2.45-GHz microwave radiation affects neither the vacuolar potential nor the low frequency excess noise in single cells of characean algae. AB - Single, giant cells of the eukaryotic green algae Chara braunii and Nitella flexilis were subjected to short-, intermediate-, and long-term irradiations with 2.45-GHz microwaves. A search was carried out for radiation-correlated shifts (i) in both the dc level and the rms low-frequency excess noise of the vacuolar potential and (ii) in the membrane resistivity. No reliable shifts were observed, either in normal cells or in cells subjected to reduced temperatures or the poison ethacrynic acid. PMID- 3847507 TI - Data analysis reveals significant microwave-induced eye damage in humans. AB - Appleton and McCrossan undertook a study for the U.S. Army at Ft. Monmouth to determine if microwave exposure would cause cataracts. They concluded: "The comparison showed the groups (microwave exposed vs. not exposed ) to be essentially the same and did not support the hypothesis that human cataracts are being caused by chronic exposure to microwaves in the military environment in this country." There are three major flaws in Appleton and McCrossan's work. First, the exposed group likely included people with little or no exposure. This would tend to minimize the possibility of finding microwave effects. Secondly, their control group consisted of people working with equipment known to cause eye damage. This also would tend to minimize the possibility of finding microwave effects. Thirdly, and most important, they did not do a statistical analysis on their data. When the writer did one, it was found that Appleton and McCrossan have a statistically significant difference between groups, with the microwave exposed showing more lens opacities than would be expected by chance. Thus, their conclusion should have been the opposite of what they stated. It is the uncritical acceptance of negative biological studies of non-ionizing radiation, such as this, that has contributed to the distortion of science in this area of research and has stimulated public opposition to the installation of such energy sources. PMID- 3847508 TI - Science and standards--another viewpoint. PMID- 3847509 TI - Can microwave/radiofrequency radiation (RFR) burns be distinguished from conventional burns? AB - The literature was reviewed that addressed the differences between microwave/radiofrequency radiation (RFR) and conventional burns. It was concluded that RFR may involve deeper tissue without immediate observable skin injury or pain. Since RFR is not uniformly absorbed in tissue, "hot spots" of focal necrosis may occur such as at tissue interfaces and in tissue with poor blood supply. A followup physical examination is advisable because there may be a latent period before burns are observed. PMID- 3847511 TI - IOL implant patients need your help. PMID- 3847510 TI - A large region controls tRNA gene transcription. AB - We find that tRNA gene transcription is controlled by a region much larger than the previously described internal segments known as A and B boxes. In a Bombyx mori silkworm tRNA2Ala gene, transcriptionally important sequences extend at least from -13 to +146, and thus include sequences both upstream and downstream from the 98 base-pair primary transcription unit. We show that the apparent size of this control region can be manipulated by the conditions used to measure transcription in vitro. Specifically, the use of high concentrations of templates to overcome the effect of an inhibitory substance in crude extracts can make the control region appear smaller. We propose that this finding explains much of the observed variability in the sequence requirements for transcription of different tRNA genes. If so, large size is likely to be a general feature of tRNA gene control regions. PMID- 3847512 TI - Nursing's role in fluorescein angiography. PMID- 3847513 TI - Japan's lens technology lags. PMID- 3847514 TI - Hope for the future: lasers. PMID- 3847515 TI - Do you know how to fit toric hydrogel lenses? PMID- 3847516 TI - Changing bacteriologic flora of hand infections. AB - To assess the possibility of a changing bacteriologic flora of hand infections and an alteration in antibiotic susceptibility, a 20-year review of acute hand infections was undertaken. Representative years were completely evaluated during the 20-year span. Over the course of the study Staphylococcus aureus infections decreased from 82% of cultures in 1960 to 34% in 1980. Pure Gram-positive cultures decreased from 85% in 1960 to 50% in 1980. Mixed Gram-positive and Gram negative infections rose significantly from 8 to 39% over the 20-year study period. Susceptibility of Staphylococcus aureus to penicillin changed from 72% in 1960 to 9% in 1980. Susceptibility of Staphylococcus aureus to the penicillinase resistant antibiotics and the cephalosporin antibiotics was at 81% and 97%, respectively, in 1980. PMID- 3847517 TI - [Antibiotic susceptibility of the clinically isolated staphylococcal strains resistant to cephalosporin derivatives]. AB - Incidence of cephalosporin-resistant staphylococcal infections is increasing recently. We tried to find out the possible first choice antibiotic for these infections. We estimated minimal inhibitory concentrations (MIC) of each one of the broad spectrum antibiotics with different mode of actions as well as representative drugs of penicillins and cephalosporins against strains of Staphylococcus epidermidis and Staphylococcus aureus. Trend of antibiotic susceptibility of S. epidermidis was found to be as same as that of S. aureus. MIC of minocycline was found to be the lowest in the drugs tested, and there found no resistant strains. MIC of erythromycin was next low but more than a half strains were found to be resistant to this drug. Some of the strains were thought to be treated with amikacin or sulfonamides by the MIC against them, but there also found many resistant strains. Therefore, use of these drugs should be decided after sensitivity test of the causative bacteria. Most of the strains were found not to be treated with beta-lactam antibiotics. In conclusion, minocycline could be the only one first choice drug for staphylococcal infections before antibiotic susceptibility test of the causative strains in the present moment. PMID- 3847518 TI - [Clinical study of BRL 25000 (clavulanic acid-amoxicillin) granules in pediatric infections]. AB - BRL 25000 granules, a formulation of amoxicillin (AMPC) and the beta-lactamase inhibitor clavulanic acid (CVA) in a ratio of 2 to 1, was studied clinically and bacteriologically in pediatric infections. The in vitro antibacterial activity of BRL 25000 was superior to AMPC against beta-lactamase producing strains. The pharmacokinetics of the BRL 25000 granule were studied following oral administration to a 6 years old female and 9 years old male in the fasting state at dose levels of 10 mg/kg and 16.1 mg/kg, respectively. In the case of the female dosed at 10 mg/kg, the peak serum concentrations were found to be 6.38 micrograms/ml for AMPC and 1.83 micrograms/ml for CVA at 1 hour following administration. The elimination half-life of AMPC was 0.86 hour and that of CVA was 0.67 hour. The 4-hour urinary recovery was 61.89% for AMPC and 17.92% for CVA. In the male receiving 16.1 mg/kg, the peak concentrations were 2.55 micrograms/ml for AMPC at 3 hours following administration and 1.46 micrograms/ml for CVA at 1.5 hours following administration. The elimination half-life of AMPC was 1.59 hours and that of CVA was 1.19 hours. The 6-hour urinary recovery was 44.19% for AMPC and 30.05% for CVA. In clinical studies, the BRL 25000 granule was administered to 36 infants with upper respiratory tract infections, mainly tonsillitis, urinary tract infections etc. Good clinical efficacy was obtained in 33/36 cases (91.7%). Diarrhea and rash were occasionally noted side effects but were not severe. From the above results, it can be concluded that the BRL 25000 granule is a suitable and effective drug for use in the treatment of pediatric infections. PMID- 3847519 TI - [Experimental and clinical studies on BRL 25000 (clavulanic acid-amoxicillin) granules in the pediatric field]. AB - Fundamental and clinical studies have been performed on the BRL 25000 granules (combination of amoxicillin (AMPC) and potassium clavulanate (CVA) in 2: 1 ratio) in the pediatric field. In bacteriological studies a potentiated antibacterial activity of BRL 25000 was recognized against AMPC-resistant and beta-lactamase producing clinical isolates. The pharmacokinetics of the BRL 25000 granules were studied at dose levels from 10 to 20 mg/kg. The peak serum concentrations of AMPC and CVA achieved approximately 1 hour after dosing were 4.29-9.55 micrograms/ml and 3.87-4.78 micrograms/ml, respectively. The serum half-life was found to be 0.90-1.31 hours for AMPC and 1.01-1.22 hours for CVA. Six-hour urinary excretion rates were 29.5-62.6% for AMPC and 12.6-37.9% for CVA. In the clinical studies, the BRL 25000 granules were administered to 36 pediatric patients (15 with upper and lower respiratory tract infections, 10 with urinary tract infections and 11 with skin or soft tissue infections, etc.) at dose levels of 30-50 mg/kg/day. Clinical results in all cases were excellent or good. In particular, good bacterial and clinical effects were obtained against infections caused by beta lactamase producing AMPC-resistant strains except E. cloacae 1 strain. No adverse reactions or abnormal laboratory findings were recognized in any patient. PMID- 3847521 TI - [Experimental and clinical studies on BRL 25000 (clavulanic acid-amoxicillin) granules in the pediatric field]. AB - Fundamental and clinical studies have been performed on BRL 25000 (clavulanic acid 1 part-amoxicillin 2 parts) granules in the pediatric field. The antibacterial activities of BRL 25000 and amoxicillin (AMPC) were investigated against clinically isolated and laboratory stocked strains. BRL 25000 was superior to AMPC against strains of E. coli, Salmonella sp. and Klebsiella sp., and similar against Gram-positive cocci. Serum concentrations of AMPC and clavulanic acid (CVA) were measured 0.25, 0.5, 1, 2, 4 and 6 hours after administration of BRL 25000 granules at dose levels of 7.5, 10, 15 and 20 mg/kg. At 7.5 mg/kg peak level of AMPC of 2.69 micrograms/ml was achieved about 2 hours after dosing with a biological half-life of 1.64 hours; corresponding value for CVA was 0.53 micrograms/ml at 1 hour with a T 1/2 of 1.46 hours. At 10 mg/kg, AMPC also peaked after 2 hours (3.82 micrograms/ml) and the T 1/2 was 1.63 hours, whilst for CVA the value was 0.56 micrograms/ml with a T 1/2 of 1.24 hours. Value for AMPC at 15 mg/kg was 5.18 micrograms/ml at 1 hour post dose with a T 1/2 of 1.48 hours, and for CVA 4.01 micrograms/ml at 1 hour with a T 1/2 of 0.89 hour. At the highest dose of 20 mg/kg, AMPC level reached 4.21 micrograms/ml after 2 hours with a T 1/2 of 2.39 hours, and the CVA peak was 1.64 micrograms/ml at 1 hour with a T 1/2 of 1.01 hours. The 6 hours urinary recovery of AMPC and CVA following administration of the BRL 25000 granules ranged from 38-64% and 2-33%, respectively. In the clinical studies, the BRL 25000 granules are administered to 15 cases with pediatric infections and the clinical response was excellent or good in all cases treated (100%). Bacteriological investigation was performed on 13 strains from 12 cases and all strains were eradicated (100%). Regarding side effects, elevation of eosinophil was observed in 1 case and vomiting in 3 cases. PMID- 3847520 TI - [Experimental and clinical studies on BRL 25000 (clavulanic acid-amoxicillin) granules in pediatric infections]. AB - BRL 25000, granules preparation containing 2 parts of amoxicillin (AMPC) and 1 part of clavulanic acid (CVA, beta-lactamase inhibitor) as its potassium salt, has been investigated fundamentally and clinically. An in vitro study of the antibacterial activity of BRL 25000 against clinically isolated S. aureus (34 strains) showed higher activity than for AMPC alone and demonstrated that CVA potentiated the activity of AMPC, showing a synergistic effect against beta lactamase producing organisms. A total of 27 pediatric patients aged between 6 months and 13 years 8 months (23 with respiratory infections and 4 with urinary tract infections) were treated with a daily dose ranging from 31.7 to 54.5 mg/kg, divided into 3 or 4 doses a day for periods of 4-18 days. The clinical effect was evaluated as excellent in 26 cases, poor in 1 case and the efficacy ratio was therefore 96.3% (26/27). The bacteriological effect against 12 organisms isolated from 9 patients was studied and all were eradicated (12/12). A drug-related side effect was observed in only 1 patient who developed diarrhea on the 4th day of treatment which continued during the treatment for 10 days. However, no severe side effect and no abnormality related to the drug in laboratory findings were observed. From these results it is concluded that BRL 25000 will be a clinically effective drug in the treatment of mild and moderate infections in the pediatric field. PMID- 3847522 TI - [Experimental and clinical studies on BRL 25000 (clavulanic acid-amoxicillin) in the pediatric field]. AB - Fundamental and clinical studies on BRL 25000 granules were carried out in the pediatric field. BRL 25000 is a formulation comprising 1 part of clavulanic acid (CVA) and 2 parts of amoxicillin (AMPC). The MICs of BRL 25000 and AMPC were assessed against 24 clinically isolated strains of S. aureus (including 23 beta lactamase producing strains), 22 S. pyogenes, 20 E. coli (8 beta-lactamase producing strains), 24 K. pneumoniae (24 beta-lactamase producing strains), 20 H. influenzae (6 beta-lactamase producing strains). BRL 25000 showed MIC80 (cumulatively 80% of strains were inhibited) at 6.25 micrograms/ml against S. aureus, less than or equal to 0.10 micrograms/ml against inst S. pyogenes, 12.5 micrograms/ml against E. coli, 6.25 micrograms/ml against K. pneumoniae and 0.39 micrograms/ml against H. influenzae. BRL 25000 showed no improvement in MIC terms against beta-lactamase nonproducing strains compared with AMPC. However, BRL 25000 was markedly more effective against beta-lactamase producing strains. Thus BRL 25000 was up to 8 fold more active against S. aureus, 2 to 64 fold against E. coli, 4 to 128 fold against K. pneumoniae, 4 to 16 fold against H. influenzae than AMPC. Following oral administration of BRL 25000 granules (at a dose level of 12.5 mg/kg) to 2 children aged 9 and 11 years, the mean peak serum concentrations of AMPC and CVA were 8.33 +/- 2.43 micrograms/ml and 4.44 +/- 1.65 micrograms/ml respectively 1 hour after dosing. The half-lives of AMPC and CVA were 1.35 +/- 0.42 hours and 0.91 +/- 0.05 hour, respectively. The urinary excretion was 48.21 +/- 3.83% for AMPC and 16.90 +/- 7.06% for CVA in the first 6 hours after administration. In clinical studies, 23 pediatric patients aged 2 months to 12 years with bacterial infections were treated with BRL 25000 granules and the clinical effectiveness, bacteriological response and side effects were evaluated. The clinical response was assessed in 23 cases, 3 with acute rhinitis, 6 with acute purulent tonsillitis, 5 with acute bronchitis, 4 with acute pneumonia, 3 with impetigo, 1 with furunculosis and 1 with periproctal abscess. Results were excellent in 13 cases, good in 7, fair in 3 and hence the efficacy rate (excellent and good cases) was 87.0% (20/23). In particular the clinical response in 9 cases with infections due to beta-lactamase producing organisms was excellent in 6, good in 2, fair in 1 and the efficacy rate was 88.9% (8/9).(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3847523 TI - [Bacteriological and clinical evaluation of BRL 25000 (clavulanic acid amoxicillin) granules in the pediatric field]. AB - Bacteriological and clinical evaluations of BRL 25000 (1 part clavulanic acid plus 2 parts amoxicillin) granules in the pediatric field have been performed. The MICs of BRL 25000 against 25 clinically isolated strains of S. aureus, 40 E. coli, and 14 K. pneumoniae were compared with those of AMPC. Against beta lactamase non-producing strains of S. aureus and E. coli, the MICs of both drugs were nearly equal, however, against beta-lactamase producing strains of these species and K. pneumoniae, BRL 25000 was superior to AMPC. The blood levels of AMPC and CVA after single oral administration of approximately 15 mg/kg of BRL 25000 granules to fasted children were studied in 3 subjects. The mean levels of AMPC and CVA peaked about 1 hour after administration at values of 11.40 and 5.49 micrograms/ml, respectively, with half-lives of 0.91 and 1.02 hours, and AUCs of 23.52 and 12.66 hr X micrograms/ml, respectively. The 6-hour urinary recovery of AMPC ranged from 30.59% to 52.03% and for CVA from 16.31% to 45.18%. There was no significant difference between the blood level of AMPC following single oral administration of approximately 10 mg/kg AMPC granules and that of AMPC following single oral administration of approximately 15 mg/kg BRL 25000 granules to the same children. Clinical evaluation of BRL 25000 granules administered orally 3-4 times a day at total daily doses of between 42.9-52.9 mg/kg resulted in improvement, judged excellent or good, in all 7 cases of tonsillitis and 2 cases of pyelonephritis. In particular, the clinical effect was excellent in the case of tonsillitis where a beta-lactamase producing H. influenzae was isolated. In the total 11 cases treated, including 2 cases of mycoplasmal pneumonia excluded from the clinical evaluation, 1 case of rash and eosinophilia was observed. No other adverse reactions or abnormal laboratory findings were observed. The taste and flavor of the drug were well accepted by the children. It was concluded that BRL 25000 granules are promising new drug which should be markedly useful in the treatment of infections in pediatric outpatients. PMID- 3847524 TI - [Experimental and clinical studies on BRL 25000 (clavulanic acid-amoxicillin) granules in the pediatric field]. AB - BRL 25000 granules (containing 2 parts amoxicillin and 1 part clavulanic acid) have been studied fundamentally and clinically. The MICs of BRL 25000 against strains of S. aureus, E. coli, K. pneumoniae which were resistant to CEZ and beta lactamase producing strains of H. influenzae were determined. The MICs of BRL 25000 at an inoculum of 10(6) cells/ml were 1/4 to 1/128 of those of AMPC and, in particular, the MICs of BRL 25000 were especially reduced against the organisms for which those of AMPC were more than 100 micrograms/ml. The pharmacokinetics of BRL 25000 were studied in 46 children at dose levels of 7.5 mg (8 fasting children, 7 non-fasting children), 10 mg/kg (4 fasting, 4 non-fasting), 15 mg/kg (4 fasting, 4 non-fasting), 20 mg/kg (8 fasting, 7 non-fasting). The peak serum concentrations in fasting children were marginally higher than those in non fasting subjects. Values for AMPC and CVA from BRL 25000, dosed at 7.5, 10, 15 and 20 mg/kg to fasting children, 0.5-1 hour after dosing were 4.86 and 2.36 micrograms/ml, 5.20 and 1.69 micrograms/ml, 7.50 and 3.27 micrograms/ml, 9.38 and 6.30 micrograms/ml, respectively. In non-fasting subjects, corresponding values were 2.84 and 1.01 micrograms/ml, 4.53 and 2.10 micrograms/ml, 7.29 and 4.08 micrograms/ml, 6.83 and 2.96 micrograms/ml, respectively. The biological half lives of AMPC and CVA, following the administration of BRL 25000, show no significant difference between the fasting and non-fasting states. Values for AMPC and CVA in fasting children were 0.85-1.15 hours and 0.64-1.03 hours, and in non-fasting children, 1.18-1.79 hours and 0.78-1.02 hours, respectively. The time to reach the peak serum concentration and half-lives were similar for AMPC and CVA when dosed as BRL 25000. Peak urinary concentrations for BRL 25000 (AMPC and CVA) at dose levels of 7.5, 10, 15, 20 mg/kg to fasting children were 681.8 and 148.2 micrograms/ml, 247.1 and 66.3 micrograms/ml, 484.2 and 149.1 micrograms/ml, 1,796.5 and 372.0 micrograms/ml, whilst in the non-fasting state the values were 496.3 and 83.2 micrograms/ml, 991.1 and 156.7 micrograms/ml, 2,397.5 and 460.7 micrograms/ml, 1, 896.3 and 323.4 micrograms/ml, respectively. The peak urinary concentration in the fasting state was observed at 0-2 hours after dosing, and in non-fasting individuals it occurred at 2-4 hours after dosing.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3847525 TI - [Effect of BRL 25000 (clavulanic acid-amoxicillin) on bacterial flora in human feces]. AB - BRL 25000 (187.5 and 375 mg tablets), a formulation of CVA-K and AMPC in the ratio of 1:2, and AMPC (as control drug) were administered to healthy volunteers, aged 20 approximately 28 years and weighing 60 approximately 85 kg (68.8 kg, on average). Each drug was administered 3 times a day (after meals) for 5 days and the volunteers were separated into 3 groups of 4 subjects each. The effect on the fecal flora was studied before dosage, during administration (day 3 and 5) and day 3 and 5 after the administration course was completed. Studies were undertaken to isolate C. difficile on the last day of administration and 3 and 5 days after administration had ceased. Fecal concentrations and the susceptibility of the isolates to AMPC, CVA-K and BRL 25000 were measured. Side effects and laboratory findings were studied. The results obtained were as follows: 1. In BRL 25000 (187.5 mg X 3/day) group, the population of E. coli was on average, 1 X 10(6) approximately 9 X 10(6) cells/g feces before initiation of administration and it increased by 2 logarithms 3 and 5 days after initiation of administration. By 3 and 5 days after end of administration, the E. coli population was similar to the initial population. The population of Klebsiella sp. was 1 X 10(6) approximately 9 X 10(6) cells/g feces on average before commencement of dosage and it increased by 2 logarithms 3 days after initiation of administration but there was no consistent change in the Klebsiella sp. population thereafter. The Enterobacter sp., population was not consistent neither was the population of other Enterobacteriaceae. In total, the mean Enterobacteriaceae population was 1 X 10(7) approximately 9 X 10(7) cells/g feces before initiation of administration and increased by 2 logarithms 3 days after initiation of administration, and then returned to the initial level 5 days after end of administration. No consistent changes in population were noted for the other Gram-negative bacilli. The Staphylococcus sp. population was 1 X 10(6) approximately 9 X 10(6) cells/g feces on average before initiation of administration. This organism was detected in only 1 case 3 days after initiation of administration and in another 5 days after initiation of administration, thereafter, the population was similar to the initial population.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3847526 TI - [Pharmaceutical preparation of BRL 25000]. PMID- 3847527 TI - [Plasma kallikrein-kinin system in liver diseases--especially in alcoholic liver injuries]. PMID- 3847528 TI - Genetic polymorphisms of human complement components BF and C2 in Korean: population and association studies. PMID- 3847529 TI - [A case of Bartter's syndrome--special reference to tubular function, the prostaglandin and the kallikrein-kinin system in the kidney]. PMID- 3847530 TI - [Primary nursing. 5. Incorporation of primary nursing into the nursing organization]. PMID- 3847531 TI - [Re-evaluation of daily care. 41. Re-examination of the hospital environment as patients' life environment]. PMID- 3847532 TI - [Alcoholism as a chronic disease]. PMID- 3847533 TI - [Treatment of alcoholism in the field of internal medicine]. PMID- 3847534 TI - [Dependence on the patient's will power: interaction with an alcoholic patient who had difficulty with the group environment]. PMID- 3847535 TI - [Alcoholism as a disease entity: support of the patient and inducement of his will for recovery]. PMID- 3847537 TI - [A desperate life of an alcoholic: an account by a former alcoholic]. PMID- 3847536 TI - [Possibility for recovery from alcoholism]. PMID- 3847538 TI - [Nursing of alcoholics at a rehabilitation center]. PMID- 3847539 TI - [Bedside nursing. Reflection on the terminal care with patients' families]. PMID- 3847540 TI - [Bedside nursing. Interaction with the patient based on mutual trust]. PMID- 3847541 TI - [Report on home nursing. 15. For the establishment of a regional health care system: home nursing of aged, bedridden patients organized at the town office of Kotoumi-cho, Nagasaki Prefecture]. PMID- 3847542 TI - [Monologue by a head nurse: a reflection on her experience in training at an American military hospital in Okinawa in 1960]. PMID- 3847543 TI - [Report from a hospice. 5. Quality of life]. PMID- 3847544 TI - [Clinical aspects of dementia. 1. Definition of dementia]. PMID- 3847545 TI - [Medical care in transition: toward the 21st century. 2. The welfare system for the aged]. PMID- 3847546 TI - [Counseling of the patient. 4. Items to follow the initial greeting: procedures in counseling. 1]. PMID- 3847547 TI - [Profile of a nurse: Ms. Li Ying, a nurse from the First People's Hospital of Shanghai visiting Japan]. PMID- 3847548 TI - [Diary of a cancer patient: a positive attitude in spite of a loss of his voice. 5. Surgery and the postoperative course]. PMID- 3847549 TI - [Health care in Indonesia. 5. Health care services in Indonesia]. PMID- 3847550 TI - [Clinical significance of pain]. PMID- 3847551 TI - [Progress in pain therapy: nerve block therapy]. PMID- 3847552 TI - [Progress in pain therapy: neurosurgical therapy]. PMID- 3847553 TI - [Nursing of patients with pain: psychosomatic approach to patients with pain]. PMID- 3847554 TI - [Nursing of patients with pain: current status and problems of therapy in cancer pain]. PMID- 3847555 TI - [Nursing of patients with pain: the WHO interim therapeutic guideline concerning cancer pain]. PMID- 3847557 TI - [Nursing of patients with pain: understanding of pain of patients]. PMID- 3847556 TI - [Nursing patients with pain: nursing actions and nursing standard for patients with pain]. PMID- 3847558 TI - [Nursing of patients with pain: presurgical education of patients expected to have postoperative pain and their care following surgery]. PMID- 3847559 TI - [Nursing approach to a terminal patient with cancer pain]. PMID- 3847560 TI - [Nursing of patients with trigeminal neuralgia--neurosurgical therapy according to Janneta's method]. PMID- 3847561 TI - [Evaluation of introduction of psychological tests (CMI and MAS) to nursing in dealing with anxiety of patients]. PMID- 3847562 TI - [Non-surgical treatment of calculi of the kidney and ureter--percutaneous lithectomy]. PMID- 3847563 TI - [Werner's syndrome]. PMID- 3847564 TI - [Clinical application of an implantable, miniaturized hearing aid (artificial middle ear)]. PMID- 3847565 TI - [New surgical therapy of strabismus]. PMID- 3847566 TI - [Anesthesia of patients in shock]. PMID- 3847567 TI - [Extracorporeally induced systemic hyperthermia for the treatment of cancer]. PMID- 3847568 TI - [Postoperative care of young children in the ICU following heart surgery]. PMID- 3847569 TI - [Nursing of young children at the ICU following heart surgery]. PMID- 3847571 TI - [Care in urostomy, uretero-cutaneous fissure requiring a catheter]. PMID- 3847570 TI - [Survey on diabetic patients who interrupted ambulatory care given at the hospital and a lesson from the survey data]. PMID- 3847572 TI - [The role of nurses in charge of diabetic education at hospitals]. PMID- 3847574 TI - [Orem's theory]. PMID- 3847575 TI - [Nursing process]. PMID- 3847573 TI - [Nursing and communication--a comparison of the practice in Japan and that in the United States]. PMID- 3847576 TI - [Nursing units]. PMID- 3847578 TI - [Nursing sorted according to nursing functions]. PMID- 3847577 TI - [Patient-nursing personnel relationship]. PMID- 3847579 TI - [Group dynamics]. PMID- 3847580 TI - [Communication]. PMID- 3847581 TI - [Home care]. PMID- 3847582 TI - [Self care]. PMID- 3847583 TI - [Terminal care]. PMID- 3847584 TI - [Thanatos]. PMID- 3847585 TI - [Team nursing]. PMID- 3847586 TI - [Death education]. PMID- 3847587 TI - [Travelbee's theory]. PMID- 3847589 TI - [Human science]. PMID- 3847588 TI - [Theory of the need]. PMID- 3847590 TI - [Brain death]. PMID- 3847592 TI - [Biofeedback]. PMID- 3847591 TI - [Bioethics]. PMID- 3847593 TI - [Vital signs]. PMID- 3847594 TI - [Paradigm]. PMID- 3847596 TI - [Primary care]. PMID- 3847595 TI - [First aid]. PMID- 3847597 TI - [Primary nursing]. PMID- 3847599 TI - [Process records]. PMID- 3847598 TI - [Primary health care]. PMID- 3847600 TI - [Comprehensive medicine]. PMID- 3847601 TI - [Hospices]. PMID- 3847602 TI - [Rooming-in system]. PMID- 3847603 TI - [Roy's theory]. PMID- 3847604 TI - [Role playing]. PMID- 3847605 TI - [Characteristics of a personal dosimeter and notes on its use]. PMID- 3847606 TI - [Relationship between the methods of elimination by enterostomy patients and their daily activities]. PMID- 3847607 TI - [Prolongation of mental life expectancy]. PMID- 3847608 TI - [Case studies for the development of nursing students' capacity to solve problems]. PMID- 3847609 TI - [Nursing education and the role of nursing instructors: from the history of the Department of Nursing, Kochi Women's College School of Home Economics]. PMID- 3847610 TI - [Training in clinical nursing at a home for the aged]. PMID- 3847611 TI - [Expectation of the instructor of nursing education: the results of a survey on the attitude of nursing students]. PMID- 3847612 TI - [Study on the method of teaching in clinical nursing training: with special reference to the records of the actions involved in clinical training]. PMID- 3847613 TI - [Observation by nursing students at the early stage of clinical training]. PMID- 3847614 TI - [Preliminary outline of the curriculum for nursing education at National Junior Colleges]. PMID- 3847616 TI - [On nursing education. 35. Nursing technology as a reflection of life style]. PMID- 3847615 TI - [Educational technology: practice in the field of internal medicine. 1. The format of classroom practice]. PMID- 3847617 TI - [Methodology and problems of nursing education: for the solution of the dilemma in teaching. 11. The problem of educational evaluation]. PMID- 3847618 TI - [Postwar public health nursing activities in Japan (3): job satisfaction in public health nursing. Ms. Etsuko Ishizuka (Akita Prefecture). Interview by A Sakurada, N Sato, N Kaida]. PMID- 3847619 TI - [Postwar public health nursing in Japan (3): activities directed to individual family units. A case of Ms. Moriyo Imano (Miyagi Prefecture). Interview by H Sairo, M Sato, S Horii]. PMID- 3847620 TI - [Postwar public health nursing activities in Japan (3): activities closely associated with the inhabitants. A case of Ms. Take Sasaki (Fukushima Prefecture). Interview by A Ishikawa, Y Oki, H Sugano, M Sato, M Harada]. PMID- 3847621 TI - [Postwar public health nursing activities in Japan (3): activities for the local citizens--a case of Ms. Tomiko Watanabe (Tochigi Prefecture). Interview by N Osaki, M Sugawa, Y Handa, R Motohashi]. PMID- 3847623 TI - [Postwar public health nursing activities in Japan (3): positive and persistent efforts maintained for over 30 years--a case of Ms. Mieko Akiba (Tokyo). Interview by M Ishida, K Kainuma, M Yamano, T Yuaso]. PMID- 3847622 TI - [Postwar public health nursing activities in Japan (3): toward zero infant mortality--a case of Ms. Yuki Hoshino (Chiba Prefecture). Interview by M Oikawa, N Kubota, H Sato, Y Yokose, M Yokohara]. PMID- 3847624 TI - [Postwar public health nursing activities in Japan (3): for fulfillment of home care--a case of Ms. Mitsuko Benibayashi (Tokyo). Interview by K Akiba, J Naka]. PMID- 3847625 TI - [Postwar public health nursing activities in Japan (3): constant inquisitiveness and resultant progress--a case of Ms. Kikue Hasebe (Gifu Prefecture). Interview by H Kuratsubo, T Goto, E Doi]. PMID- 3847626 TI - [Postwar public health nursing activities in Japan (3): activities always backed by the citizens--a case of Tomiko Ofuji (Mie Prefecture)]. PMID- 3847627 TI - [Postwar public health nursing activities in Japan (3): pioneers seeking direct contact with inhabitants--cases of Tadako Uemura, Nenko Imanishi, and Mieko Nishiyama (Nara Prefecture). Interview by T Tsuji, R Nagai, Y Nagashima, K Maeda]. PMID- 3847628 TI - [Public health nursing activities--discussion with public health nursing students]. PMID- 3847629 TI - [Significance of trinity-type approach in health improvement: effectiveness of the third viewpoint, the attitudes of the care provider and the public]. PMID- 3847630 TI - [At completion of nursing of a patient with senile dementia being cared for at home]. PMID- 3847631 TI - [Postwar activities of public health nurses. A lesson in the early public health activities based on the welfare of the area residents. Achievement of Ms. Ito Shimoyama and Yukie Fukaishi of Shimane Prefecture. Interview by K Okazaki, N Shiho, M Nishimura, C Hiroe, Y Miyamoto]. PMID- 3847632 TI - [Postwar activities of public health nurses. Life-long effort to improve the health of the population. Ms. Yoshiko Oshita of Yamaguchi Prefecture. Interview by S Watanabe, J Hirata, M Hanonoki]. PMID- 3847633 TI - [Postwar activities of public health nurses. 28 years of public health nursing with efforts toward organizations of regional public health services. Ms. Kaoru Takasuka of Ehime Prefecture. Interview by Y Utsunomiya, J Onishi, A Tanaka, T Nakagawa T, M Maeda]. PMID- 3847634 TI - [Postwar activities of public health nurses. Fulfilling experience with no regret in the past. Ms. Sueno Kamogawa of Oita Prefecture. Interview by Y Ito, N Inoue, Y Otsuru, E Kanda]. PMID- 3847635 TI - [Postwar activities of public health nurses. Deep concern for the local residents and dependable activities. Ms. Asaka Nishi of Kunamoto Prefecture. Interview by T Nasu]. PMID- 3847636 TI - [Postwar activities of public health nurses. Nursing actions tailored to the local conditions for the best benefit of the residents. Ms. Shizu Yonaha of Okawa Prefecture (H Okuhara, H Shimabukuro)]. PMID- 3847637 TI - [Postwar activities of public health nurses. Devotion of public health nurses as strong as the tropical sun. Ms. Fusako Wakikawa, Tomi Hamasato, and Kiyoko Teruya of Okinawa Prefecture. Interview by C Shinaga, T Ikema, M Inoha, T Shingaki, T Chinen]. PMID- 3847638 TI - [Postwar activities of public health nurses. Job satisfaction of public health nurses. Ms. Kiyoka Machida and Terue Nakamura of Saitama Prefecture. Interview by J Arai, E Shibazaki, E Takashina, A Minomura, R Mochida]. PMID- 3847639 TI - [A turning point from re-evaluation to the establishment of a prospect in public health nursing activities: a viewpoint in comprehensive understanding of public health care]. PMID- 3847640 TI - [Survey on the knowledge and attitudes of housewives concerning salt reduction in diet--part of the dietary salt reduction campaign]. PMID- 3847642 TI - [Disclosure of the sex of the fetus]. PMID- 3847641 TI - Antimicrobial activity of amoxicillin and other penicillins against clinical isolates from bovine udders. PMID- 3847643 TI - [A normal birth--also an alternative]. PMID- 3847644 TI - [Human relations on the job and protection of mental health]. PMID- 3847645 TI - [Development of nursing in maternity care]. PMID- 3847646 TI - Computer applications in nursing: an overview. PMID- 3847647 TI - Computers in the work environment: concerns for nursing. PMID- 3847648 TI - [Elfriede Schlaeppi, central President of the Swiss Nurses' Association, retires. "We must become full partners in the field of health. Interview by Nelly Haldi and Brigitte Kocher]. PMID- 3847649 TI - [Various researches provoke the question, do we accord too much importance to early childhood?]. PMID- 3847650 TI - [Establishment of the mother-child relationship. The parental role in the early beginnings]. PMID- 3847651 TI - [Continuing education. 5 new documents available. Greater clarity and legal security]. PMID- 3847652 TI - [Medical demography and nursing. Towards a restructuring of the health system?]. PMID- 3847653 TI - [Hospital planning in the Canton of Neuchatel. One of the solutions appears interesting]. PMID- 3847654 TI - [Career planning in the hospital: a systematic action]. PMID- 3847655 TI - [Cataract extraction: optic rehabilitation in cataract]. PMID- 3847656 TI - [Legal knowledge for nurses (I). What is my legal relationship with my employer?]. PMID- 3847657 TI - [Recommendations for protective measures. Safety in handling of cytostatics]. PMID- 3847658 TI - [Safety in handling of cytostatics. Protective measures are sensible]. PMID- 3847659 TI - [A study from the German Federal Republic. Profession and continued education]. PMID- 3847660 TI - [Decubitus prevention and therapy]. PMID- 3847661 TI - [Hazards of high-frequency current. 1]. PMID- 3847662 TI - [Differential diagnosis of ulcerating diseases of the lower extremities]. PMID- 3847663 TI - [Therapy of osteomyelitis. II]. PMID- 3847664 TI - [Relationship of technology and humanism. Reflections on everyday clinical matters]. PMID- 3847665 TI - [Hazards of high-frequency current. 2. Current in the human body]. PMID- 3847666 TI - [Irrigation solutions in urology]. PMID- 3847667 TI - [The origin of life on this earth]. PMID- 3847669 TI - [Clinical aspects and therapy of carotid stenosis]. PMID- 3847668 TI - [Experiences and expectations of a patient following a heart infarct in the hospital]. PMID- 3847670 TI - School health research: a current perspective. PMID- 3847672 TI - Regulatory considerations when children are involved as subjects in research. AB - Investigators planning research projects face a myriad of considerations including careful review of the literature, study design, selection of subject population, analysis of data, financial and administrative support, and publishing the data. One area for careful thought by those contemplating research in educational settings is the regulatory requirements that may apply when human subjects--children or students in particular--are involved in the research. This article describes the applicability and some basic provisions of US Dept. of Health and Human Services (DHHS) regulations for the protection of human subjects, requirements for informed consent, and some additional protections for children involved in research. Suggestions for preparing a grant application for DHHS support and sources of additional information also are included. PMID- 3847671 TI - School-based health research funded by the National Heart, Lung, and Blood Institute. AB - This paper presents a brief overview of the trends in the National Institutes of Health (NIH) funding for school-based research and describes the school-based research initiatives for cardiovascular health promotion and disease prevention at the National Heart, Lung, and Blood Institute (NHLBI). Currently, 15 cardiovascular school-based research studies are funded at the NHLBI. A summary table and a brief description are provided for each study including the name of the investigator, the name of the institute awarded the grant, the funding period, grade levels and racial/ethnic groups in each study, intervention components, research design, outcome measures, and a capsule of reported results. PMID- 3847673 TI - Methodologic issues in self-report of health behavior. AB - Self-reports of behavior are the most commonly used method for collecting outcome data in health education programs, but they are subject to a variety of sources of measurement error. Problems of measurement in some recently reported education program evaluations are identified, and a model is proposed to identify systematically the major influences for accuracy of self-reported measures of behavior. Several methodologic studies on the skill aspect of self-report form completion are briefly described, and eight steps to promote more accurate self report of health behaviors are proposed. PMID- 3847674 TI - Screening for risk factors as a component of a chronic disease prevention program for youth. AB - Screening for risk factors within the framework of a chronic disease prevention program for youth can enhance both the educational and evaluative impact of the program. Screening results can provide the focus for curriculum development and the impetus for health-related behavior change. Program evaluation is facilitated by the use of screening results as objective outcome data regarding health status. The implementation of medical screening as a component of a chronic disease prevention program is described, and issues related to educational and evaluative impact are discussed. PMID- 3847675 TI - Stepping forward into health education research. AB - Directed toward individuals beginning research activities, this article presents topical areas of interest for those who are planning projects and applying for funding. Topics include Planning the Project, Basic Funding Terminology, Reasons Proposals are Disapproved, and How to Initiate a Contact. PMID- 3847676 TI - The validity of reliability assessments. AB - This paper focuses on reliability and evaluation of health education programs in school settings. Reliability is a concept that guides researchers in selecting or developing instruments, and is used as a standard, with validity and acceptability, for judging the credibility of research findings and inferences. Reliability is defined within the context of research design, and methods for estimating the reliability of cognitive measures are reviewed. Using data gathered in a school health education curriculum evaluation as an example, possible errors in hypotheses testing that may occur when estimating internal consistency of cognitive test scores obtained in quasi-experimental designs are examined. The appropriateness of internal consistency as a measure of reliability of cognitive measures is discussed and suggestions for reliability assessment and related issues such as power analysis are presented. PMID- 3847677 TI - Student heart health knowledge, smoking attitudes, and self-esteem. AB - The Chicago Heart Health Curriculum Program (CHHCP) is a comprehensive, cardiovascular disease, risk-reduction program designed for a multiracial urban population of sixth-grade students and their families. The study showed strong program impact on student health knowledge, and found that independence of peers significantly influenced smoking attitudes and self-esteem. The latter was associated strongly with humanistic teacher attitudes and behavior as well. Smoking attitudes were found to be related significantly to general health attitudes. The results suggest that future programs conveying heart health knowledge should consider student learning in the affective context of self esteem, independence of peers, and teacher humanism. Reinforcement through continual intervention over a prolonged period may produce more permanent change over time. PMID- 3847678 TI - An evaluation of quantitative and qualitative assessment techniques on the impact of the SERR curriculum. AB - This study measured the effectiveness of a smoking risk reduction program for sixth grade students using a pretest/posttest control group design with the addition of a nonequivalent control group. Knowledge of the health consequences of smoking, decision-making, resistance-to-persuasion skills, and tobacco use were analyzed quantitatively; program implementation, participant views of the program, and program effects were analyzed qualitatively; and the quantitative data were analyzed in terms of its consistency with the qualitative data. Analysis of quantitative results revealed significant differences between groups on the smoking knowledge test, decision-making skills, and resistance-to persuasion skills. Qualitative results not only substantiated quantitative results, but also revealed overall participant satisfaction with the program. They also indicated the need for a close working relationship between teachers, state and local health educators, reorganization of the curriculum, and relinquishing of curriculum to school districts for self-scheduling and organization. Utilization of both methods of analysis yielded a closer estimate of total program impact than if only method of analysis had been used. PMID- 3847679 TI - Educational program for early postpartum discharge families. PMID- 3847680 TI - A case for formula feeding. PMID- 3847681 TI - Legal issues of nursing practice. PMID- 3847682 TI - [Understanding the mind and the body of female students]. PMID- 3847683 TI - [Survey of characteristics of student nurses; comparison with students of child care and education]. PMID- 3847685 TI - [Notes on "The basis of nursing"]. PMID- 3847684 TI - [Student nurses' activity related to daily life and nursing technic]. PMID- 3847686 TI - [Patients' evaluation on nursing]. PMID- 3847687 TI - [Survey on maternity health of working women]. PMID- 3847688 TI - [Sociological and feministic approach to the body (dialog)]. PMID- 3847689 TI - [Motivation in nursing administration]. PMID- 3847690 TI - [The effect of nursing care modalities and shift assignments on nurses' work experiences and job attitudes]. PMID- 3847691 TI - [Helping the development of relation between schizophrenics and student nurses]. PMID- 3847692 TI - [Seminar on accidents in medicine for student nurses]. PMID- 3847693 TI - [Economic environment surrounding the present hospital management]. PMID- 3847694 TI - [Responsibility of nurse directors in budget management]. PMID- 3847695 TI - [Nursing and management]. PMID- 3847696 TI - [Community nursing activity of Kawakita Hospital and its financial evaluation]. PMID- 3847697 TI - [Cognitive structure of nursing students on bioethics]. PMID- 3847698 TI - [Survey on life of students of a 2-year program nursing school]. PMID- 3847699 TI - [Sociological and feministic approach to the body (dialog)]. PMID- 3847700 TI - [Instruction, direction and counseling in nursing administration]. PMID- 3847701 TI - [Considerations about staff development: toward improvement of nursing (1)]. PMID- 3847702 TI - [Literary works as teaching materials for understanding of the aged people]. PMID- 3847703 TI - [Survey on hospitals utilized for student nurses' practice in Fukuoka Prefecture]. PMID- 3847704 TI - [Nursing process: nursing of diabetic patients. Pathophysiology of diabetes mellitus and life activities of and prognosis of patients]. PMID- 3847705 TI - [Nursing process: nursing of diabetic patients. Diagnostic and therapeutic processes of diabetic patients]. PMID- 3847706 TI - [Nursing process: nursing of diabetic patients. Keypoints in comprehensive observation of diabetic patients]. PMID- 3847707 TI - [Nursing process: nursing of diabetic patients. Nursing plans for diabetic patients]. PMID- 3847708 TI - [Nursing process: nursing of diabetic patients. Pre-discharge education of an aged diabetic patient with diabetic cataract]. PMID- 3847709 TI - [Nursing process: nursing of diabetic patients. Delay in nursing actions caused by insufficient information obtained at admission. A discussion]. PMID- 3847710 TI - [Investigation approach to clinical training--dietary education of a patient with liver cirrhosis]. PMID- 3847711 TI - [Health education of an expectant patient with past history of pregnancy and induced abortions]. PMID- 3847712 TI - [Clinical conference: lessons in clinical training. On terminal care]. PMID- 3847713 TI - [Report on nursing study in Denmark by a nursing student (4). A learning experience in the activities of home and visiting nurses]. PMID- 3847714 TI - [Test yourself. Nursing of a patient with maxillary tumor who has been subjected to surgery and radiotherapy]. PMID- 3847715 TI - [Communication among the nursing staff for uniform nursing care. Proper communication between nursing teams for proper nursing care]. PMID- 3847716 TI - [Communication among the nursing staff for uniform nursing care. Factors interfering with efficient communication--an observation on the results of an analysis of communication at our hospital]. PMID- 3847717 TI - [Communication among the nursing staff for uniform nursing care. A gap between the transmitted information and desired information]. PMID- 3847718 TI - [Communication among the nursing staff for uniform nursing care. The effect of the experience in communication between nursing teams on nursing by students]. PMID- 3847719 TI - Institutional ethics committees: issues of confidentiality and immunity. PMID- 3847720 TI - Consent forms, readability, and comprehension: the need for new assessment tools. PMID- 3847721 TI - Crisis in the community. PMID- 3847723 TI - Another chapter another Paige. Interview by Alison Dunn. PMID- 3847722 TI - Nurse Kinnock's Golden Boy. PMID- 3847724 TI - Rethinking nurse education. PMID- 3847725 TI - Nursing patience. PMID- 3847727 TI - The College I know. PMID- 3847726 TI - Look right--look left. PMID- 3847728 TI - Sensorimotor development in the presence of atypical object manipulation during infancy. PMID- 3847729 TI - Children's concepts of illness: implications for health teaching. AB - Children's concepts develop through different stages from global and undifferentiated to concrete and abstract. In the concrete stage perceptual and physical attributes of a concept are dominant. In the abstract stage the essential mental and nonperceptual attributes of a concept are grasped. In general, children's concepts of illness shift with age from definitions based largely on feeling states to broader, more precise definitions that include specific diagnoses and psychosocial indicators of illness. The basis for determining if one is ill also shifts with age from reliance on external cues to reliance on internal body cues. Children's knowledge of specific illnesses increases markedly during the school-age years. It appears that their concepts of specific illnesses are a synthesis of real knowledge and imaginative distortions. Children's concepts of illness causation also develop through different stages from global and undifferentiated to concrete and abstract. School-age children tend to attribute illness causation to their own actions but with age illness is increasingly attributed to external causes. There is in the school-age years increasing differentiation between external and internal in explanations of illness causation with inclusion of means of internalization of the causal agent and intermediary steps between cause and effect. This trend continues in adolescence with description of the illness mechanism in terms of physiologic processes, internal organ, and malfunctions. PMID- 3847730 TI - Deaf children's perception of internal body parts. PMID- 3847731 TI - School-age children with diabetes: knowledge and management of the disease, and adequacy of self-concept. PMID- 3847732 TI - Dominant coping behaviors of one adolescent female hospitalized for surgical correction of scoliosis. PMID- 3847733 TI - [Pneumococcal meningitis partially resistant to penicillin: presentation of 2 cases and review of the literature]. PMID- 3847735 TI - [Nephritis in hemorrhagic vasculitis in children]. PMID- 3847734 TI - [Kidney failure in childhood]. PMID- 3847736 TI - [Clinical aspects, diagnosis and treatment of pyelonephritis in children]. PMID- 3847737 TI - [Glomerulonephritis in children]. PMID- 3847738 TI - [Principles of treating glomerulonephritis patients]. PMID- 3847739 TI - [With concern for youth]. PMID- 3847740 TI - [Congenital and hereditary nephropathies]. PMID- 3847741 TI - [Metabolic nephropathy with oxalate-calcium crystalluria in children]. PMID- 3847742 TI - [Urolithiasis in children and cystinuria as its cause]. PMID- 3847743 TI - [Causes of the development of urinary tract anomalies in children]. PMID- 3847745 TI - [Clinico-laboratory methods of studying children with kidney diseases]. PMID- 3847744 TI - [Use of vitamins in kidney diseases in children]. PMID- 3847746 TI - [A 1-day hospital for the examination and dispensary care of nephrology patients]. PMID- 3847747 TI - [Work of the nurse in performing x-ray urologic studies of children]. PMID- 3847748 TI - [Work of the nurse in the nephrology department]. PMID- 3847749 TI - [Music and medicine]. PMID- 3847750 TI - [For healthy teeth in the child]. PMID- 3847751 TI - [Medical ethics and deontology in the children's hospital]. PMID- 3847752 TI - An approach to post-op pain control: a pain letter. PMID- 3847753 TI - Dealing with the pain and discomfort of surgery. PMID- 3847754 TI - Impaired nursing practice: Michigan's response. PMID- 3847755 TI - Case study in family therapy: a Rogers/Minuchin reformation. PMID- 3847756 TI - Avoid labels and stereotypes. PMID- 3847757 TI - The implementation of the National Health Service Management Inquiry Report (Griffiths) HC(84)13. PMID- 3847758 TI - Length of stay in hospital after delivery of a first baby. PMID- 3847759 TI - Maternity care in action. Part III: Care of the mother and baby. PMID- 3847760 TI - Bonding--obstetric fact of psychological fiction? PMID- 3847761 TI - Bonding--has the pendulum swung too far? PMID- 3847762 TI - It's my privilege. PMID- 3847763 TI - Informed consent and breast cancer: where does the nurse fit in? PMID- 3847764 TI - Validity--the essential consideration. PMID- 3847765 TI - Management brief from do-it-yourself to delegator. PMID- 3847766 TI - A nurse colleague program: one solution to nurse turnover. PMID- 3847767 TI - Transporting high-risk newborns: the importance of communication. PMID- 3847768 TI - Intravenous Teflon catheter cannulation in the premature infant. PMID- 3847770 TI - Clinical pharmacist: emerging member of the NICU team. PMID- 3847769 TI - Transition to extrauterine life. PMID- 3847771 TI - Making a difference: an educational advisory committee in the NICU. PMID- 3847772 TI - Congenital duodenal obstruction. PMID- 3847773 TI - Orthopaedics out on a limb. PMID- 3847774 TI - Pre- and post-operative visiting at the Royal Hallamshire Hospital, Sheffield. PMID- 3847776 TI - Learn the ropes from a mentor. PMID- 3847775 TI - Cooling-induced supersensitivity to acetylcholine in the isolated airway smooth muscle of the rat. AB - Isolated tracheal and bronchial strip-chain preparations of the rat were used to study the effect of temperature on electrically or acetylcholine-induced contraction. The preparations were suspended in the organ bath containing Krebs bicarbonate solution for isometric tension recording. A decrease of bath temperature from 37 degrees C to 20 degrees C (cooling) had no effect on basal tone but augmented the contractile responses of the trachea and bronchus caused by stimulation of intramural cholinergic nerves (0.5-5 Hz) or acetylcholine (3 mumol/l-0.3 mmol/l). Cooling-induced augmentation of the contractile response to acetylcholine was not affected by pretreatment of the tissue with physostigmine (0.1 mumol/l) or tetrodotoxin (0.3 mumol/l). The affinity of acetylcholine for the tracheal muscarinic receptors at 20 degrees C, determined from its dissociation constant (KA), was not significantly different from that at 37 degrees C. On the other hand, acetylcholine-induced contraction of trachea which was incubated with isosmotic K+- rich Krebs solution and with Ca-free, EGTA (0.1 mmol/l) containing Krebs solution were both augmented at 20 degrees C. Caffeine or vanadate, each at a lower concentration than the threshold for causing contraction by itself, augmented the contractile responses of the trachea to acetylcholine (1 mumol/l-0.3 mmol/l). These potentiating effects of caffeine and vanadate were greater at 20 degrees C then 37 degrees C. From these observations, it is concluded that increased responsiveness of the rat airway smooth muscle to acetylcholine with lowered temperature may involve the acceleration of Ca release from intracellular storage sites, inhibition of Ca extrusion from the cell and or the inhibition of Ca reuptake by intracellular storage sites. PMID- 3847778 TI - Educators ask: what leads to job satisfaction? PMID- 3847777 TI - Promote healthy lifestyles. PMID- 3847779 TI - Nursing administrator establishes marketing strategies. PMID- 3847780 TI - Organize. Admitting nurses gain recognition. PMID- 3847782 TI - Royal College of Nursing. Continuum; inspiration. PMID- 3847781 TI - First conference of RCN Society of Paediatric Nursing. PMID- 3847783 TI - Set records straight. PMID- 3847784 TI - The quiet revolution. PMID- 3847785 TI - Royal College of Nursing. Common sense. PMID- 3847786 TI - Much is happening in the field of mental handicap nursing. PMID- 3847787 TI - Seething with unrest. PMID- 3847788 TI - Determining the future of nursing. PMID- 3847789 TI - Joining hands: geriatric and psychiatric nursing. PMID- 3847790 TI - Royal College of Nursing. Better future. A role to play. PMID- 3847791 TI - The time is right for closer bonding. PMID- 3847792 TI - The PRB has done nurses proud in 1985. PMID- 3847793 TI - 'Justice' is new ICN watchword. Presidential address. PMID- 3847794 TI - Royal College of Nursing. Echo those words. PMID- 3847795 TI - Ensure high environmental and safety standards are maintained. PMID- 3847796 TI - Use of restraint. PMID- 3847797 TI - Organ transplant law raises thorny questions. PMID- 3847799 TI - Strategic planning for the business of community health and home care. PMID- 3847798 TI - Tackling a changing society head on. PMID- 3847800 TI - Order out of chaos: changes in community health and home care. PMID- 3847801 TI - Using behavior modeling to teach management skills. PMID- 3847802 TI - Trends that may affect nursing's future. PMID- 3847803 TI - With this flow sheet, less is more.... PMID- 3847804 TI - Say good-bye to guilt. PMID- 3847805 TI - Perfecting your i.v. therapy techniques. Part III. PMID- 3847806 TI - Assessing the liver. PMID- 3847807 TI - Single-dose I.M. injections. How much is too much? PMID- 3847808 TI - Hemodynamic monitoring. Learning to read the waves. PMID- 3847809 TI - Electric shock. PMID- 3847810 TI - Teaching Harry what we'd thought he knew. PMID- 3847811 TI - Back to basics. PMID- 3847812 TI - Working with an angry nurse. PMID- 3847813 TI - Crimes of compassion. PMID- 3847814 TI - Using teamwork for better patient care. PMID- 3847815 TI - Getting things under control. Angry nurse. PMID- 3847816 TI - Inadequate staffing? Don't take chances with risky solutions. PMID- 3847817 TI - Urine self-testing: what your patient needs to know. PMID- 3847818 TI - Combating acute tubular necrosis. PMID- 3847819 TI - How can you help this diabetic patient? PMID- 3847820 TI - The most difficult person I've ever worked with. Dr. Boyd broke all the rules. PMID- 3847822 TI - Avoiding legal risks in the ICU. PMID- 3847821 TI - Intractable pain: is more medication the only answer? PMID- 3847823 TI - Refusing to follow orders: what's the cost of saying no? PMID- 3847824 TI - Patient advocacy: unprofessional conduct? Court case. PMID- 3847825 TI - Education Day: concentration improves compliance. PMID- 3847826 TI - Automating patient care planning. PMID- 3847827 TI - Orienting nurses to computers. PMID- 3847828 TI - Emergency department: on the road again? PMID- 3847829 TI - Taking charge of computerization. PMID- 3847830 TI - Focus charting: streamlining documentation. PMID- 3847832 TI - Medical nurses: the generalist is a "specialist," too! PMID- 3847831 TI - The affective domain in health occupations education. PMID- 3847834 TI - Client, n. ... loosely, a customer. PMID- 3847833 TI - What makes you mad? PMID- 3847835 TI - Stepping back from the shopfloor. PMID- 3847836 TI - Image and reality. 1. What chance of job satisfaction in OH nursing? PMID- 3847838 TI - What can a computer do for you? PMID- 3847837 TI - Nursing under stress. PMID- 3847839 TI - Evaluation of an occupational health cost containment program. PMID- 3847840 TI - The policy and procedure manual--essential component of an employee health unit. PMID- 3847841 TI - Smoking cessation in nurses: a report on a self-selected population at the Presbyterian Hospital in New York City. PMID- 3847842 TI - Women, work and pregnancy: implications for occupational health nursing. PMID- 3847843 TI - Near-death experiences: implications for medical personnel. PMID- 3847844 TI - The silent epidemic: asbestosis and related diseases. PMID- 3847845 TI - Potential health hazards with antineoplastic drugs. PMID- 3847846 TI - The research process: an overview. PMID- 3847847 TI - [The doctor's visit--from the viewpoint of nursing service management]. PMID- 3847849 TI - [Radioactivity--around, in, for and against us]. PMID- 3847848 TI - [Health economic considerations on morbidity status in Austria]. PMID- 3847851 TI - [Nursing care of stoma patients]. PMID- 3847850 TI - [The professional status of nursing personnel in Vienna]. PMID- 3847852 TI - [One year of selective menus in the hospital of the provincial capital of Bregenz]. PMID- 3847853 TI - [Improved well-being through more intensive instruction?]. PMID- 3847854 TI - [Health and what keeps youth from attaining it]. PMID- 3847855 TI - PNA member visits Central America: this is what she saw and felt. PMID- 3847856 TI - Greiner chronicles travels to Central America; details plight of the Sandinista. PMID- 3847857 TI - The role of calcium and estrogen in osteoporosis. PMID- 3847858 TI - An in-depth look at osteoporosis. PMID- 3847859 TI - Spine fractures associated with osteoporosis. PMID- 3847860 TI - Glucocorticoid osteopenia. PMID- 3847861 TI - Maintaining a positive environment for the older adult. PMID- 3847862 TI - Toward a hip fracture prevention project. PMID- 3847863 TI - Initial assessment and management of femoral neck fractures in the elderly. PMID- 3847865 TI - Loneliness in the elderly. PMID- 3847866 TI - Perioperative concerns for the patient with osteoporosis. PMID- 3847864 TI - Nursing liability--the patient who falls. PMID- 3847867 TI - Stress fractures of the femoral neck. PMID- 3847868 TI - Power versus empathy: harmony or discord? PMID- 3847869 TI - Sequence and codon recognition of bean mitochondria and chloroplast tRNAsTrp: evidence for a high degree of homology. AB - Bean mitochondria and chloroplast tRNAsTrp, purified by RPC-5 chromatography and two-dimensional gel electrophoresis, have been sequenced using post-labeling techniques. The high degree of sequence homology between bean mitochondria and chloroplast tRNAsTrp shows that these two tRNAs are coded for by closely related genes which have probably evolved from a common ancestor gene. The anticodon of bean mitochondria tRNATrp is CmCA, which can recognize UGG (the codon for tryptophan in the universal code) and is complementary neither to UGA (which codes for tryptophan in mammalian and yeast mitochondria) nor to CGG (which could be a tryptophan codeword in plant mitochondria). PMID- 3847871 TI - Mothers' and unrelated persons' initial handling of newborn infants. AB - The pattern of newborn handling by 36 newly delivered women during their infants' first postpartum bedside visit was compared with the pattern of newborn handling by 36 female nursing students at the beginning of their first clinical day in a hospital normal newborn nursery. The research hypothesis predicted that the initial pattern of handling a newborn infant would be similar for mothers and persons unrelated to the newborn. However, mothers and students differed significantly, both for the amount of handling during the observation period and the time it took each group to initiate using fingers, palms, arms, and trunk to handle the infant. In addition, the sequence of use of fingers, palms, arms, and trunk was different for mothers and students. Although the mothers did not follow the sequence of handling reported in the literature, the students did, thus casting doubt on the specificity of a pattern of maternal handling of the newborn infant as a means of assessing maternal attachment. PMID- 3847870 TI - The process of maternal role attainment over the first year. AB - A study of the process of maternal role attainment in three age groups (15 to 19 years, 20 to 29 years, and 30 to 42 years) over the first year of motherhood found that the role attainment behaviors of feelings of love for the baby, gratification in the maternal role, observed maternal behavior, and self-reported ways of handling irritating child behaviors did not show a positive linear increase over the year. Behaviors peaked at 4 months postbirth, but declined at 8 months. Interview data suggested that the challenges of the infant's developmental behaviors at 8 and 12 months contributed to feelings of role incompetency. Although age groups functioned at different levels, their patterns of behaviors over the year did not vary, except for gratification in the role, indicating that the maternal role presented similar challenges for all women. There were no significant differences by maternal age in role strain or self image as a mother over the year. PMID- 3847872 TI - Development of the Infant Tenderness Scale. AB - This article describes the development of a new instrument, the Blank Infant Tenderness Scale (BITS), designed to measure mothers' perceptions of infant tenderness needs. These infant needs include physiological requirements, such as nourishment and adequate body temperature, and contact requirements, such as physical closeness and manipulation. Guided by Sullivan's (1953) theorem of tenderness, a 36-item instrument was constructed. To assess reliability and validity of the BITS and to develop a beginning data base with new mothers, 65 healthy postpartum mothers participated in the study. The results demonstrated that the BITS has high internal consistency and construct validity, and sufficient split-half reliability. Parity was found to affect mothers' perceptions, with multiparous mothers differentiating more among infant tenderness needs than primiparous mothers. Although maternal age did not significantly influence mothers' perceptions, a graded effect was noted. The results further support the view that both physiological and contact needs are important in providing an infant with tenderness. PMID- 3847873 TI - Spouse support and myocardial infarction patient compliance. AB - This study investigated the relationship between spouse support and compliance of myocardial infarction patients. Data were obtained from a sample of 60 couples during home interviews with the husband at least three months following his infarction. The hypothesis tested was that there is a positive relationship between spouse support and compliance. Husband's self-reported compliance was obtained for each of 10 aspects of the regimen. A spouse support questionnaire completed by wives estimated the degree to which they engaged in behaviors theorized to be supportive. Demographic and illness variables were also obtained. The hypothesis was not supported. Moreover, compliance was not related to demographic or illness variables, although those subjects still engaged in a cardiac rehabilitation program had significantly higher compliance than those who had stopped attending. PMID- 3847874 TI - Nursing students' assessments of behaviorally self-blaming rape victims. AB - A review of evidence relating to adaptiveness of behavioral self-blame is presented with results of a study of the reactions of senior baccalaureate nursing students (N = 144) to vignettes of rape victims who differed in terms of behavioral self-blame (present or absent), affect (positive or negative), and lapsed time since attack (1 month, 6 months, 1 year). Students' assessments of victims' adjustment varied with findings in the literature on length of time needed for recovery and the usefulness of behavioral self-blame. PMID- 3847875 TI - Types and sources of social support for managing job stress in critical care nursing. AB - The theoretical model of occupational stress developed by LaRocco, House, and French, (1980) was tested in relation to job stress in critical care nursing. A sample of 164 female critical care nurses was obtained from eight hospitals. The variables of perceived social support, perceived job stress, job dissatisfaction, and psychological symptoms were measured, and specific types and sources of support were examined. Findings from the full sample supported all the main effects in the model but none of the buffering effects. For the married group, a specific type of support (work support) explained 24% of the variance of perceived job stress, nearly double that of the overall social support measure for this group. For the unmarried group, a specific source of support (from relatives) explained 10% of the variance in perceived job stress and 16% of the variance in psychological symptoms--double or triple the effect of the total network support score for the full sample. PMID- 3847876 TI - Predicting nurses' turnover and internal transfer behavior. AB - This research examined the predictability of internal job transfer and turnover behavior from nurses' career plans, work values, and job satisfaction. Values and career plans rather than job satisfaction were found to discriminate between persons who remained in their jobs, accepted internal transfers, or turned over within a one-year research period. Results raise doubts about nurses' use of internal transfer as a substitute for turnover and support the importance of employees' expectations about future satisfaction as a major determinant of job movement. PMID- 3847877 TI - Professional and bureaucratic role conceptions and moral behavior among nurses. AB - This descriptive study tested the relationship between professional and bureaucratic role conceptions and moral behavior. It was theorized that professional-bureaucratic role conceptions of nurses, and their perceptions of the discrepancy between ideal and actual values influence the manner in which they practice and operationalize their professional values, including moral behavior. Data were obtained from 217 practicing nurses representing different positions, areas of practice, education, age, ethnic groups, and work settings. Two of the subscales of Nursing Role Conceptions (Pieta, 1976) were used to measure professional and bureaucratic role conceptions; moral behavior was measured by Judgments About Nursing Decisions (Ketefian, 1981). Professional categorical role conception was positively related to moral behavior. Professional normative role conception and professional role discrepancy were negatively related. Bureaucratic role discrepancy was found to be positively related to moral behavior. Hierarchical multiple regression analyses showed that the combination of professional normative and bureaucratic normative role conceptions, professional categorical and bureaucratic categorical role conceptions, and professional and bureaucratic role discrepancies explained greater variance in moral behavior than either one of the pairs of variables alone. The interactions between these variables were not significant. PMID- 3847879 TI - The clues that don't add up. PMID- 3847878 TI - Reliability estimates: use and disuse. PMID- 3847880 TI - Darenth Park. Countdown to closure. PMID- 3847881 TI - Child abuse. Children at risk. PMID- 3847882 TI - Fact-finding mission. PMID- 3847883 TI - When the tables are turned. PMID- 3847884 TI - Nurse as relative. Out in the cold. PMID- 3847885 TI - The days since boil and bake. PMID- 3847887 TI - Long-term intravenous therapy. PMID- 3847886 TI - Getting off to a good start. PMID- 3847888 TI - Helping Harry to relate to others. PMID- 3847889 TI - Steps to independence. PMID- 3847890 TI - Reading matters. PMID- 3847891 TI - What good are essays? PMID- 3847892 TI - Yes, minister? PMID- 3847893 TI - Bradford fire. After the inferno. PMID- 3847894 TI - Legionnaire's disease. Mystery of the organism. PMID- 3847895 TI - Standards of care. A tale of two wards. PMID- 3847896 TI - Standards of care. Fighting for the future. Interview by Patricia Slack. PMID- 3847897 TI - Standards of care. Satisfaction guaranteed. PMID- 3847899 TI - Does doctor know best? PMID- 3847898 TI - Education. The twilight zone. PMID- 3847900 TI - Suffer little children.... PMID- 3847901 TI - Learn to believe in yourself. PMID- 3847902 TI - Desirable residence? PMID- 3847903 TI - An intensive health visiting programme for mothers with toddlers. PMID- 3847905 TI - Measuring pressure sores. PMID- 3847904 TI - Pressure sores. Healing through teamwork. PMID- 3847906 TI - Wound infection after caesarean section. PMID- 3847907 TI - Update on AIDS. PMID- 3847908 TI - Hospital-acquired urinary tract infection. PMID- 3847909 TI - Changing course. PMID- 3847910 TI - Computing. The Calgary connection. PMID- 3847911 TI - Heart of the matter. PMID- 3847912 TI - Some awkward questions. PMID- 3847913 TI - Cosmic nursing. Star wards. PMID- 3847915 TI - Management of oesophageal varices. PMID- 3847914 TI - Formula for success? PMID- 3847916 TI - Adapting the process. PMID- 3847918 TI - Caring for a patient undergoing a radiculogram. PMID- 3847917 TI - Dressing ulcers. Unwelcome guests. PMID- 3847919 TI - The profit of weight loss. PMID- 3847920 TI - Safe as houses? PMID- 3847922 TI - Who's playing God? PMID- 3847921 TI - The world is her oyster. Interview by Laurence Dopson. PMID- 3847923 TI - Nurses and human rights. Matters of conscience. PMID- 3847925 TI - The tip of the iceberg. PMID- 3847924 TI - The new psychotherapists. PMID- 3847926 TI - Management. One for you, one for me. PMID- 3847927 TI - In sickness and in health. PMID- 3847928 TI - An unusual case of urinary fistula. PMID- 3847929 TI - An unusual case of urinary fistula. Helping Edith to cope. PMID- 3847930 TI - Systems of life no 126. Setting up the systems- 26. Development of the axial skeleton. PMID- 3847931 TI - Backchat. Not today, thank you. PMID- 3847932 TI - Trading places. PMID- 3847933 TI - Robbing Peter to pay Paul. PMID- 3847934 TI - Patients first. Satisfied customers? PMID- 3847935 TI - Regional nurses. Endangered species. PMID- 3847936 TI - Nurse with no name. PMID- 3847938 TI - The education debate. The shape of things to come. PMID- 3847937 TI - The education debate. Born or made?. Interview by Niall Dickson. PMID- 3847939 TI - Resection of an aortic aneurysm. PMID- 3847940 TI - Mind treatment. PMID- 3847941 TI - Budgeting for beginners. Reading the small print. PMID- 3847942 TI - Management. Right for the job? PMID- 3847943 TI - Leg ulcers and their management. PMID- 3847944 TI - Backchat. A degree of change. PMID- 3847945 TI - Health centres of excellence. PMID- 3847946 TI - Can't pay? Won't pay! PMID- 3847947 TI - Community nursing. Back to basics. PMID- 3847948 TI - It's now or never. PMID- 3847949 TI - Does the process help the patient? PMID- 3847950 TI - Spinal fusion for scoliosis. PMID- 3847951 TI - Open minds. PMID- 3847953 TI - Realism in curriculum planning. PMID- 3847952 TI - Management. Head hunting. PMID- 3847954 TI - Backchat. Killed by kindness? PMID- 3847955 TI - Community. DIY male maintenance. PMID- 3847956 TI - Hyperactive children. 3. Play therapy. PMID- 3847957 TI - Hospital histories. 2. Nether Edge Hospital. PMID- 3847958 TI - Management. Harsh decisions. PMID- 3847959 TI - Infant feeding. Psychology of choice. PMID- 3847960 TI - Infant feeding. Breast versus bottle. PMID- 3847961 TI - Education. Formula for success. PMID- 3847962 TI - Intensive care nursing. 4. Neglected areas. PMID- 3847963 TI - Nutrition. 6. Drug-nutrient interactions. PMID- 3847964 TI - Ignorance could be healthier. PMID- 3847965 TI - Education news. Studies for Scottish nurses are boosted. PMID- 3847966 TI - Cool King on a hot seat. Interview by Martin Vousden. PMID- 3847967 TI - Preventing pressure sores. PMID- 3847968 TI - Caring for leg ulcers. PMID- 3847969 TI - A sticky solution. PMID- 3847970 TI - Nurses in society. A chance to air your views. Interview by Cate Campbell. PMID- 3847971 TI - Clinical revision series. 7. Oxford knee replacement. PMID- 3847973 TI - Tooting Bec hospital. PMID- 3847972 TI - Down your way. Day care unit. PMID- 3847974 TI - Acute pancreatitis. PMID- 3847975 TI - Unit learning assignment. PMID- 3847976 TI - Trust, respect and use. PMID- 3847977 TI - Jam tomorrow, but not today: why nurses have been conned again. PMID- 3847978 TI - Mind you don't fall. PMID- 3847979 TI - Satisfied with your job? PMID- 3847980 TI - Virginia Henderson: the definitive nurse. Interview by Cate Campbell. PMID- 3847981 TI - Stress survey. Disturbing findings. PMID- 3847982 TI - Stress survey. In their own words. PMID- 3847983 TI - Clinical revision series. 8. Congenital heart disease. PMID- 3847984 TI - Crisis in care. PMID- 3847985 TI - Friend or foe? PMID- 3847986 TI - Mental handicap. 1. Leading them home. PMID- 3847987 TI - Caring for learners. PMID- 3847988 TI - Mental health. Wise counsel. PMID- 3847989 TI - Best apron forward. PMID- 3847990 TI - Selecting a tool for measuring fatigue. PMID- 3847991 TI - The nurse in Washington Internship Week. PMID- 3847992 TI - The impact of certification on specialty associations. PMID- 3847993 TI - Cancer pain and suffering: clinical lessons from life, literature and legend. PMID- 3847994 TI - Psychotherapy and the person with cancer: an analysis of one nurse's experience. PMID- 3847995 TI - Malignant pleural effusions. PMID- 3847996 TI - Patients' descriptions of the experience of receiving radiation therapy. PMID- 3847997 TI - Cancer pain: assessment of nurses' knowledge and attitudes. PMID- 3847998 TI - You're leaving when? Looking at recruitment and retention in today's economy. PMID- 3848000 TI - From staff nurse to board member. PMID- 3847999 TI - Managing pain medications at home. PMID- 3848001 TI - Designing surgical instruments: a nurse's innovation. PMID- 3848002 TI - Solving the frustration of unscheduled "simple procedures": the basic procedure room (continuing education). PMID- 3848003 TI - Obtaining a graduate degree with perioperative clinical nursing specialization. PMID- 3848004 TI - Glycerol injection: an alternative treatment for trigeminal neuralgia. PMID- 3848005 TI - Quality circles: effective problem solving in the operating room (continuing education). PMID- 3848006 TI - Implementing wellness philosophy in an ambulatory surgery center. PMID- 3848008 TI - A comprehensive look at the operating microscope. PMID- 3848007 TI - Research: welcome to the world of nursing research. PMID- 3848009 TI - Gas-fluid exchange procedure applied to giant retinal tears. PMID- 3848010 TI - Comprehensive care of patient undergoing stapedectomy for otosclerosis (continuing education). PMID- 3848011 TI - Lasers: issues, problems, and implications for practice. PMID- 3848012 TI - Intracranial aneurysms: diagnosis, treatment, and nursing implications (continuing education). PMID- 3848013 TI - A comprehensive laser center. PMID- 3848014 TI - Primer on organizing microsurgical procedures more effectively. PMID- 3848015 TI - Professional survival tips: writing an effective cover letter and resume. PMID- 3848017 TI - Symposium on pulmonary medicine. PMID- 3848016 TI - Dialogue on malpractice. PMID- 3848018 TI - Chronic cough. Diagnosis and treatment. AB - Cough is a common symptom in the smoking and non-smoking patient seeking medical attention from the office-based physician. Often, a comprehensive history and physical examination suggest the correct diagnosis, and specific therapy can be directed to the underlying disease. A chest roentgenogram is an essential part of the workup; it may suggest tuberculosis, chronic fungal infection, bronchiectasis, or lung abscess. In addition, bronchogenic carcinoma, which is increasing in frequency in the population, has several common manifestations that can be recognized on the chest roentgenogram. Pulmonary function studies are often helpful in the workup of the patient with chronic cough. A pattern of obstructive lung disease is seen with asthma, chronic bronchitis, and bronchiectasis. Diseases that cause lung fibrosis, such as idiopathic pulmonary fibrosis, sarcoidosis, and pneumoconiosis, give a restrictive ventilatory defect. Bronchoprovocation testing can be helpful when baseline pulmonary function tests are normal and the diagnosis of postviral bronchitis or cough-variant asthma is suggested. If the bronchial inhalation challenge is negative, these diagnoses can be excluded. Chronic rhinosinusitis with associated postnasal drip is one of the most common causes of chronic cough and is often difficult to confirm because the physical examination and roentgenogram of the paranasal sinuses may be normal. In a great majority of patients with chronic cough, a diagnosis can be established by simple, clinical and laboratory procedures used in the outpatient setting. PMID- 3848019 TI - Clinical presentations of chronic obstructive pulmonary disease. AB - The diagnosis of chronic obstructive pulmonary disease covers a wide range of lung problems that have as their base the partial blockage of the smooth movement of air from the lungs during expiration. Asthma, simple bronchitis, chronic obstructive bronchitis, and emphysema are the diseases usually considered as chronic obstructive disease. Many of their multiple presentations are quite common in clinical medicine but are sometimes difficult to recognize. Once the inciting event is identified, it is often reversible. PMID- 3848020 TI - A guide to prescribing pulmonary rehabilitation. AB - Pulmonary rehabilitation does have a place in the medical management of COPD. It is the responsibility of the primary care practitioner to be sufficiently informed to make intelligent choices among programs for optimum benefit to the patient. Beyond bronchodilators and small volume nebulizers is the concept of pulmonary rehabilitation, aimed at the art of living with lung disease, which may not alter the outcome of the disease but may change the quality of life for those who are sufficiently motivated to develop new habits. PMID- 3848021 TI - Lung cancer. An update. AB - Lung cancer is the leading cause of cancer mortality in the United States in 1985. Early diagnosis and an aggressive surgical approach offer the best chance for a cure. Unfortunately, the majority of patients will be diagnosed after the disease has metastasized. Radiation therapy and chemotherapy, despite recent advances, are still basically palliative modalities. The most efficacious approach to the control of lung cancer is an effective anti-smoking campaign. PMID- 3848022 TI - Flexible fiberoptic bronchoscopy. AB - Flexible fiberoptic bronchoscopy continues to be an important tool in the diagnosis of pulmonary disease. This article reviews the history, technology, methodology, applications, and complications of this diagnostic tool. PMID- 3848023 TI - Clinical evaluation of exercise and sleep disorders. AB - Current understanding of exercise and sleep in normal and pathophysiologic states is outlined. Clinical laboratory techniques used in the evaluation of these disorders are presented and discussed. PMID- 3848024 TI - Decision making in the critically ill patient. AB - In the preceding discussion we have attempted to set forth some realistic guidelines for the primary care physician in the critical care area. We feel that he is of utmost importance in setting the tone for his patient's care. He is the first physician to be called when his patient becomes critically ill. He decides whether or not consultation is needed immediately. He should choose appropriate consultants, trying to provide required expertise and compatible personalities to relate with his patient and the patient's family. His work does not end with establishing roles and delivering care. He is the single most important physician when difficult ethical and medicolegal decisions must be made. He is the physician who knows the patient and the patient's family best. They look to him for guidance and decision making about their health care. He is best able to discuss the wishes and desires of the patient if the patient becomes unable to decide for himself. The primary care physician can be extremely helpful when the appropriate medical decision is to withhold therapy. He can comfort and console the family and help them realize that the proper decisions have been made. His previous close relationship with the patient and family makes difficult decisions much easier to accept. He is also of primary importance when trying to provide care to a patient who ostensibly refuses such care. The trust he has earned in the past because of the care he was provided allows him to be much more forceful than the subspecialist who may have been on the case for 1 or 2 days. He can be the difference between survival and death merely by his presence and advice. Other difficult decisions are always made easier by a primary physician who can relate to the consultants as well as the patient and his family. In conclusion, we feel that the technologic advances of the past 30 years have tended to drive the primary care physician away from the critical care unit. This is mostly because of a need for particular expertise to run the machines of medicine. One cannot be expected to become or remain an expert in primary care and critical care medicine. The primary care physician should not feel or be excluded from the critical care area. His knowledge of general medicine and his expertise in interpersonal and family relationships allow him to provide the much needed "high touch" component of "high tech" critical care medicine. PMID- 3848025 TI - Diagnostic advances in interstitial lung disease. AB - In summary, the interstitial lung diseases represent a large group of diseases with similar clinical and pathophysiologic features but widely different etiologies. A definitive diagnosis usually depends on obtaining tissue; however, a clinical diagnosis may be adequate for therapeutic intervention in selected cases. A schematic approach to the evaluation of interstitial lung disease is presented in Figure 5. Currently, there is intense research in developing accurate noninvasive tests not only to enhance diagnosis but also to help monitor and modulate treatment. PMID- 3848026 TI - Pulmonary embolism. AB - PE, a common and serious pulmonary problem, most often results as a complication of DVT in the lower extremities. There are no specific symptoms or signs that allow a clinical diagnosis of PE. The best approach to the diagnosis is controversial and is at least partially dependent on the diagnostic capabilities and expertise available at a given hospital. Pulmonary arteriography is the definitive diagnostic test and should be considered in patients with results of less-than-high probability V-Q scans, those at high risk of bleeding complications with anticoagulation therapy, and those considered candidates for thrombolytic therapy. PMID- 3848027 TI - Nurse's testimony--"retaliatory termination". PMID- 3848029 TI - [The lower urinary tract in males. (1). Urinary catheterization]. PMID- 3848028 TI - Student nurse anesthetis--brain damage: liability. Case in point: Central Anesthesia Assoc. v. Worthy (325 S.E. 2d 819--GA). PMID- 3848030 TI - [Cardiac monitoring]. PMID- 3848031 TI - [Anesthesia in tetralogy of Fallot]. PMID- 3848032 TI - [Role of the circulating nurse in interventions for tetralogy of Fallot]. PMID- 3848033 TI - [Pre- and postoperative hospitalization of a child with tetralogy of Fallot]. PMID- 3848034 TI - [Respiratory exercise therapy in tetralogy of Fallot]. PMID- 3848035 TI - [Tetralogy of Fallot]. PMID- 3848036 TI - [Hospitalization in intensive care of a child with tetralogy of Fallot]. PMID- 3848037 TI - [Report of a case of laryngeal carcinoma]. PMID- 3848038 TI - [Vocal rehabilitation and social reintegration of laryngectomy patients]. PMID- 3848039 TI - [The lower urogenital system in the male. (2). The prostate and its diseases]. PMID- 3848040 TI - [The intubation box]. PMID- 3848041 TI - [Physiology of equilibration]. PMID- 3848043 TI - [Complementary tests]. PMID- 3848042 TI - [Examination of a patient undergoing a tympanoplasty]. PMID- 3848044 TI - [Anatomy of the ear]. PMID- 3848045 TI - [Indications for homograft or for tympanoplasty]. PMID- 3848046 TI - [Homografts and ossicle banks]. PMID- 3848047 TI - [Physiology of hearing]. PMID- 3848048 TI - PWC75%HRmax: a measure of aerobic work capacity. PMID- 3848049 TI - [A condemnation for defamation]. PMID- 3848050 TI - [Presentation and special features of the unit]. PMID- 3848051 TI - [Critical care work: schedules and shifts]. PMID- 3848052 TI - [Team work and delegating]. PMID- 3848053 TI - [Intensive care: hypertechnology, mothering, personal implications]. PMID- 3848054 TI - [Dialog with the medical team]. PMID- 3848056 TI - [Monitoring of patients on ventilators]. PMID- 3848055 TI - [Relations with families: personal implications]. PMID- 3848057 TI - [Dynamics of nursing care: catheterization notebook care records...]. PMID- 3848058 TI - [A migraine and headache club]. PMID- 3848059 TI - [Nursing and quality of life]. PMID- 3848060 TI - [Nutrition for the professional in nursing]. PMID- 3848061 TI - [Hospital nurses and their health]. PMID- 3848062 TI - [Postural prophylaxis in nursing care activities]. PMID- 3848063 TI - [The professional nurse and the need for comfort, rest and sleep]. PMID- 3848064 TI - [Safety and health in nursing work]. PMID- 3848066 TI - [Image of the nurse in society]. PMID- 3848065 TI - [Working environment and productivity of the nurse]. PMID- 3848067 TI - [Relationship between professional deontology and legislation]. PMID- 3848068 TI - [Venous insufficiency]. PMID- 3848069 TI - [Anorexia nervosa and zinc]. PMID- 3848070 TI - [Intra-arterial catheterization and monitoring in infants]. PMID- 3848072 TI - [Professional identity?]. PMID- 3848071 TI - [A nursing working experience in primary health care]. PMID- 3848073 TI - [Venous ulcer? Arterial ulcer?]. PMID- 3848074 TI - [Impressions from a study trip to London]. PMID- 3848075 TI - [Ulcerative allergic dermatitis]. PMID- 3848076 TI - [Prenatal control and detection of congenital malformations]. PMID- 3848077 TI - [Psychological care and psychiatric care in nursing]. PMID- 3848078 TI - [Repercussions at the individual and social level of hospital infections]. PMID- 3848079 TI - Molding a staff that meets great expectations. PMID- 3848080 TI - Our patients deserve better i.v. locks. PMID- 3848081 TI - What happens if your hospital bills separately for nursing? PMID- 3848082 TI - Meeting the challenge of craniotomy care. Controlling ICP after craniotomy. PMID- 3848083 TI - RN master care plan. Helping the patient in shock. PMID- 3848084 TI - Don't just tell your patients--teach them. PMID- 3848085 TI - Pulverizing kidney stones: what you should know about lithotripsy. PMID- 3848086 TI - "You swallowed your what!". PMID- 3848087 TI - What to do after CPR. The drugs you'll use in a code. PMID- 3848088 TI - When the nurse is her own worst enemy. PMID- 3848089 TI - Nursing is still a proud profession. PMID- 3848090 TI - Hidden malnutrition in geriatric patients. PMID- 3848091 TI - A Southern accent on critical care. PMID- 3848092 TI - [Nursing care development as a result of research. How to develop, test and evaluate a new diet list for the subsequent introduction to the entire hospital]. PMID- 3848093 TI - [Experimentation with a hydrocolloid in an occlusive bandage in the treatment of cutaneous decubitus ulcers "duoderm"]. PMID- 3848094 TI - [Cortancyl (1)]. PMID- 3848095 TI - [Cortancyl (2)]. PMID- 3848096 TI - [Anatomopathology and physiology of chronic bronchitis]. PMID- 3848097 TI - [Preventive treatment of chronic bronchitis]. PMID- 3848098 TI - [The treatment of chronic bronchitis]. PMID- 3848099 TI - [Report of a case: Mr. B.'s chronic bronchitis]. PMID- 3848100 TI - [Dilatation of the bronchi]. PMID- 3848101 TI - [Report of a case: Mr. P.'s dilatation of the bronchi...]. PMID- 3848102 TI - [Etiology of chronic bronchitis]. PMID- 3848103 TI - [Round table. Decubitus ulcers]. PMID- 3848105 TI - [Clinical, paraclinical and evolutionary aspects of chronic bronchitis]. PMID- 3848104 TI - [Hospital administrators, boards of directors. The distribution of responsibilities]. PMID- 3848106 TI - [L-Dopa]. PMID- 3848107 TI - [Gentalline]. PMID- 3848108 TI - [Introducing a computer in a rehabilitation unit. Use and reflections]. PMID- 3848109 TI - [Handwashing in a rehabilitation unit]. PMID- 3848110 TI - [Being a nurse in a rehabilitation center for very young children]. PMID- 3848111 TI - [The nurse in a center for rehabilitation and professional training]. PMID- 3848112 TI - [Sexuality of the spinal cord injured patients: taking responsibility for oneself within the institution]. PMID- 3848113 TI - [The night nurse in a rehabilitation unit. Reflections on night work]. PMID- 3848114 TI - [The night nurse in a rehabilitation unit. Reflection of an experience]. PMID- 3848115 TI - [The nurse in a unit for spinal cord injuries. Realization of educational support]. PMID- 3848117 TI - [Part-time work in public hospitals]. PMID- 3848116 TI - [Collective decisions in a group of nurses/nursing assistants in a rehabilitation unit]. PMID- 3848118 TI - [What do we know about neuromuscular diseases?]. PMID- 3848119 TI - [Ticlid]. PMID- 3848120 TI - [Rifampicine (2), Rifadine, Rimactan]. PMID- 3848121 TI - [Biologic study of blood platelets]. PMID- 3848122 TI - [Thrombopenia]. PMID- 3848123 TI - [Thrombocytosis]. PMID- 3848124 TI - [Thrombopathies]. PMID- 3848125 TI - [Birth, life and death of platelets]. PMID- 3848126 TI - [Blood platelets and vascular thrombosis]. PMID- 3848127 TI - [Platelet antiaggregants]. PMID- 3848128 TI - [Management of thrombopenia]. PMID- 3848130 TI - [Platelet function]. PMID- 3848129 TI - [Centers of responsibility]. PMID- 3848131 TI - [Isoptine]. PMID- 3848132 TI - [Non-ruptured aneurysm of the sub-renal abdominal aorta in elderly patients]. PMID- 3848133 TI - [A clinical case of sub-renal aortic aneurysm]. PMID- 3848134 TI - [Care of aortic aneurysm in the pre- and post-operative period]. PMID- 3848135 TI - [Monitoring and postoperative care in surgery of the abdominal aorta]. PMID- 3848136 TI - [A case of ruptured aneurysm]. PMID- 3848137 TI - [Sexual behavior in coronary patients]. PMID- 3848138 TI - [Sub-renal aneurysm of the abdominal aorta without complications]. PMID- 3848139 TI - [Nursing care. Recording an electrocardiogram]. PMID- 3848140 TI - [Cardiologic problems seen in sports medicine]. PMID- 3848141 TI - [Physical exertion and myocardial infarct]. PMID- 3848142 TI - [Exercise test and cardiovascular aptitude for physical exertion]. PMID- 3848143 TI - [Cardiac adaptation to effort]. PMID- 3848144 TI - [Sudden death of coronary origin and sports (1)]. PMID- 3848145 TI - [The nurse and sports medicine]. PMID- 3848146 TI - [The nurse and sedentary life]. PMID- 3848147 TI - [Intravenous thrombolysis in the acute phase of myocardial infarct]. PMID- 3848148 TI - [Evaluation of the aptitude for physical and sports activities]. PMID- 3848149 TI - [Dermatologic care planning in tropical areas]. PMID- 3848150 TI - [Malaria and other imported parasitic diseases in Mediterranean countries]. PMID- 3848151 TI - [Tropical pathology. Dermatologic introduction]. PMID- 3848152 TI - [Elementary lesions in dermatology in white skin and black skin]. PMID- 3848153 TI - [Visceralgine]. PMID- 3848154 TI - [Congenital hypothyroidism]. PMID- 3848155 TI - [Treatment of congenital hypothyroidism]. PMID- 3848156 TI - [Acquired hypothyroidism]. PMID- 3848157 TI - [2 clinical cases of congenital hypothyroidism]. PMID- 3848158 TI - [Development of the thyroid function in the human fetus]. PMID- 3848159 TI - [Awakening of the young child and play]. PMID- 3848160 TI - [Anxiety of women faced with the post partum period]. PMID- 3848161 TI - [Organization of the detection of hypothyroidism]. PMID- 3848162 TI - [Technics in the detection of congenital hypothyroidism and tests to be administered]. PMID- 3848163 TI - [Parlodel]. PMID- 3848165 TI - [Substitutes for cow's milk]. PMID- 3848164 TI - [Substitutes for mother's milk]. PMID- 3848166 TI - [Oral rehydration and feeding for infants with diarrhea]. PMID- 3848167 TI - [Psychogenic aspects of abdominal pain in children]. PMID- 3848168 TI - [Daily occupational health services: health and environment undertaking for improved working conditions]. PMID- 3848169 TI - [With a Norwegian health team in North Lebanon]. PMID- 3848170 TI - [Consumer action: patients' right to information]. PMID- 3848171 TI - [Childbirth experiences. Report from Skedsmo--SiA Project]. PMID- 3848172 TI - [Coffee, tea and cola drinks: are they harmful?]. PMID- 3848173 TI - [After the national meeting: what next Aud Blankholm?. Interview by Bjorn Arild Ostby]. PMID- 3848174 TI - [Serious illness or death in the family. How can we help the bereaved family]. PMID- 3848175 TI - [District leader: right and duty to remain professionally up-to-date]. PMID- 3848176 TI - [Finally school provisions for continental shelf nurses]. PMID- 3848177 TI - [Should team nursing be rejected in favor of primary nursing?]. PMID- 3848178 TI - [Nursing--occupation or profession?]. PMID- 3848179 TI - [Professional competition over pregnancy management?]. PMID- 3848180 TI - [Nursing care load in homes for the aged: every 5th home resident is a nursing home patient]. PMID- 3848181 TI - [ADP in health services. Nurses must be willing to manage]. PMID- 3848182 TI - [Midwifery services in Hol--a community which employs midwives]. PMID- 3848183 TI - [Home nursing and their relatives]. PMID- 3848184 TI - [Midwifery services in the community. Norwegian Nurses' Association's comments on the new legislation]. PMID- 3848185 TI - [Cancer among nurses with special reference to exposure to anesthetic gases]. PMID- 3848186 TI - [Norwegian Nurses' Association's National Meeting: 6-hour day with full compensation]. PMID- 3848187 TI - [Do we have a remedy for or scruples about allowing this to happen?]. PMID- 3848189 TI - [Management structure. Minister wants new type of leadership in the health sectors]. PMID- 3848188 TI - [Continuing education. Nursing's basic subject must be formulated]. PMID- 3848190 TI - [More contact with districts with a complete committee]. PMID- 3848192 TI - [Patient's home shouldn't be a railaway station]. PMID- 3848191 TI - [Handicapped. Hospital department for those who live in a world without sound]. PMID- 3848194 TI - [Primary nursing--is it realistic for 1985?]. PMID- 3848193 TI - [Politicians have well been able to find the nurses. Interview by Soren Palsbo]. PMID- 3848195 TI - [Abuse of women. Nurses risk getting into a dilemma]. PMID- 3848196 TI - [Abuse of women. The practicing physician. The entire family must be treated when abuse arises. Interview by Pia Kristensen]. PMID- 3848197 TI - [Abuse of women. Personality of victims of abuse has to be rebuild]. PMID- 3848198 TI - [Abuse of women. Police assistance to victims of abuse is inadequate. Interview by Pia Kristensen]. PMID- 3848199 TI - [Abuse of women. Social workers. Possibilities to end an abusive relationship]. PMID- 3848200 TI - [Abuse of women. Clergy. Women are secretly ashamed about abuse]. PMID- 3848201 TI - [Nurses often have the first contact with victims of abuse]. PMID- 3848202 TI - [Victim of abuse--abuse of wives. I was afraid he liked to have beaten me to death]. PMID- 3848203 TI - [Abuse of wives. Important to create a trusting and reassuring contact]. PMID- 3848204 TI - [Tax information for use with the 1984 income tax return]. PMID- 3848205 TI - [Criticism--yes but with objective argumentation]. PMID- 3848206 TI - [Emergency assistance. Great challenge to work with victims of drought]. PMID- 3848208 TI - [Nursing home environment. A positive presentation--not a necessary evil]. PMID- 3848207 TI - [Psychology: strengthening identity can mean improved team work]. PMID- 3848209 TI - [Ambulance system. Special ambulances, new field of work for nurses]. PMID- 3848210 TI - [Ambulance system. Nurse anesthetists save lives in advanced ambulance organization]. PMID- 3848211 TI - [Where is physicians' learning in ethics and empathy?]. PMID- 3848212 TI - [Resources. Co-involvement in care provides a lot of satisfaction]. PMID- 3848213 TI - [Executive Board. Continuously engaged discussion on structures within the health system]. PMID- 3848214 TI - [Nursing. The aged are capable of learning new things as well]. PMID- 3848215 TI - [Health system. Unit nurses will mean improved resource utilization]. PMID- 3848216 TI - Activation of factor B of the complement system by kallikrein and its light chain. AB - The cleavage of factor B, a protein of the alternative pathway of complement, by kallikrein was studied. Like factor D, kallikrein can cleave B to generate the alternative pathway C3 convertase C3bBb. When this convertase was formed on erythrocytes previously coated with C3b, lysis was observed indicating that a functionally active C3 convertase was formed. B was also cleaved by kallikrein in the presence of fluid phase C3b, and this resulted in B fragments comparable in size to those generated in the presence of D. The capacity of kallikrein to cleave B is localised in the light chain of the kallikrein molecule, which is the same chain of kallikrein that is responsible for its other enzymatic activities. Since on a molar basis D is much more active then kallikrein in cleaving B, a physiological role for B activation by kallikrein is only likely under certain conditions, and still has to be established. PMID- 3848217 TI - [(N)ever heard about a nursing theory?]. PMID- 3848218 TI - [What does the medical scientific experiment mean for nurses?]. PMID- 3848219 TI - [A closer look at internal budgeting]. PMID- 3848220 TI - [The homeless and health care provisions. II. Health and nursing care needs of homeless men. Research data of one institution. The SIVIS]. PMID- 3848221 TI - O.R. on the go. PMID- 3848222 TI - Learn the language of pediatric OR patients. PMID- 3848223 TI - The fight against time for life. PMID- 3848224 TI - Formulating the researchable question. PMID- 3848225 TI - Protection of human subjects. PMID- 3848226 TI - Perspective: field research in a neonatal intensive care unit. PMID- 3848227 TI - Health promotion: relevance for nursing. PMID- 3848228 TI - Research as a basis for changing nursing practice. PMID- 3848229 TI - Integrating research and clinical practice roles. PMID- 3848230 TI - Meeting education and practice objectives through clinical research collaboration: the nursing research parent project. PMID- 3848232 TI - Clinical nursing research--an interview with Pamela J. Brink, Florence S. Downs and Diane W. Scott. PMID- 3848231 TI - Interest, advocacy, cooperation: considerations for faculty researchers. PMID- 3848233 TI - [Treatment of gonorrhea with a single dose of pivampicillin and failure to cure]. PMID- 3848234 TI - [Changes in the indicators of the kallikrein-kinin system and pressure in the lesser circulation in acute bronchopulmonary pathology]. PMID- 3848235 TI - [Soot lung as occupational disease]. AB - Lung findings among 13 workers employed in a carbon black plant are presented. The concentrations of respirable dust at the work place exceeded the MAC for dust free of quartz. X-rays show disseminated small irregular and large shadows with slow progress. In two cases lung tissue was examinated histologically. Both accumulation of carbon black and development of collagen fibers were seen. According to x-rays and histological findings the lung disease can be estimated as a pneumoconiosis. Legal recognition of carbon black lung as an occupational disease can be achieved in a special procedure called "Sonderentscheidverfahren". PMID- 3848236 TI - [Thus far no decision on SBL's (National Bacteriological Laboratory) future]. PMID- 3848237 TI - [Laboratory assistant student reluctant to participate in animal experiments. Interview by Inger Lernevall]. PMID- 3848238 TI - [AD (Work Tribunal) on time off for study: the employee decides herself how long the time off should be. Interview by Inger Lernevall]. PMID- 3848239 TI - [After a new attack on nurse anesthetists, "we need respect for our professional competence"]. PMID- 3848240 TI - [More educational possibilities to choose from for prospective nurses in the USA]. PMID- 3848241 TI - [Computers help in making schedules. Interview by Viveka Holmertz]. PMID- 3848243 TI - [She quit drinking coffee at night and immediately felt better. Interview by Viveka Holmertz]. PMID- 3848242 TI - [Agreed that elucidation should be proposed: "Brain death" will be introduced in Sweden]. PMID- 3848244 TI - [After AD (Work Tribunal)--verdict on parents' time off: the law must change now]. PMID- 3848245 TI - [Greenham Common: women protest against atomic weapons]. PMID- 3848246 TI - [Portrait: Maria Eriksson. Interview by Viveka Holmertz]. PMID- 3848247 TI - [Employers want to prevent personnel from speaking to the news media]. PMID- 3848248 TI - [County council management decentralized: now decisions will be made by local units]. PMID- 3848249 TI - [Nurse who became psychotherapist and opened her own practice. Interview by Inger Lernevall]. PMID- 3848250 TI - [He instructed district nurses at a distance]. PMID- 3848251 TI - [More SHSTF-groups in future primary care. Interview by Jan Thomasson]. PMID- 3848252 TI - [Dawdling before closed wards can be opened again]. PMID- 3848253 TI - [Working with experimental animals can cause allergy symptoms in laboratory assistants]. PMID- 3848254 TI - [Midwifery society: general practitioners are decent enough--but not those in gynecology]. PMID- 3848255 TI - [Best of all we managed the summer without substitutes!]. PMID- 3848256 TI - [Stamping off before 1986 annual wage negotiations. "We cannot accept SHSTF to be unfair. Interview by Jan Thomasson]. PMID- 3848257 TI - [Peter Joxelius, former relief worker: we have much to learn from people in the Third World]. PMID- 3848258 TI - [14000 refugees crowd into Beddawi. Need for health services is very great]. PMID- 3848259 TI - [Why can't we refuse to share room with strangers?]. PMID- 3848260 TI - [Ingvor wrote a book about her illness: what happens when the nurse becomes the patient?. Interview by Inger Lernevall]. PMID- 3848261 TI - [Health care's future? A healthy people who don't have to go to the doctor?]. PMID- 3848262 TI - [Court action in dialysis case: did she hit the alarm?]. PMID- 3848263 TI - [Not only in Linkoping; risk of an accident is equally big in Uppsala]. PMID- 3848264 TI - Treatment of men with oligoasthenozoospermia and asthenozoospermia with kallikrein. AB - A randomised group of 75 men with idiopathic oligoasthenozoospermia and asthenozoospermia were subjected to control study with kallikrein. Kallikrein was given to 45 men 600 units daily in a period of 3-6 months. The other group of 30 infertile men was followed during the same period of time. Percentage of motile sperm was significantly improved after 3-6 months treatment with kallikrein. Sperm count and percentage of morphologically normal sperm showed improvement but was not statistically significant. Infertile men with sperm count below 20 X 10(6)/ml had greater improvement in sperm count than men with sperm count over 20 X 10(6)/ml. This study emphasizes that kallikrein is a relatively good drug for restoring sperm motility in idiopathic oligoasthenozoospermia and asthenozoospermia. PMID- 3848266 TI - Beginning research. PMID- 3848265 TI - Preceptorship over three years, it really works! Part One. PMID- 3848267 TI - Doctors' orders: a base for nursing practice? PMID- 3848268 TI - Bridges to the future: international symposium on nursing use of computers and information science. PMID- 3848269 TI - [Transverse ectopia of the right testicle and tumor of the left testicle with immature uterus and fallopian tubes: report of a case]. AB - A case of transverse ectopia of the right testicle and the left testicular tumor with the immature uterus and the fallopian tubes is reported. The patient, a 27 year-old married man, was admitted to our hospital with the suspicion of left testicular tumor and right undescended testicle. In his left scrotum, a double hen-egg-sized tumor was palpable and the right scrotum was empty. Exploration of the left inguinal canal disclosed double testicles with hernia uteri inguinalis. The right testicle showed transverse ectopia, and the histological finding of the left testicle was choriocarcinoma. In our review of the Japanese literature, we discovered 67 reported cases of transverse testicular ectopia. 33 (49.3%) out of 67 cases had a uterus and 9 cases (13.4%) had testicular tumor. PMID- 3848271 TI - A glimpse of health care in turbulent Nicaragua. PMID- 3848270 TI - Letting go. PMID- 3848272 TI - Evaluating post-anesthesia recovery. PMID- 3848273 TI - How do you interpret pulses? PMID- 3848274 TI - Demystifying care of patients with radioactive implants. PMID- 3848275 TI - Long-term venous access. PMID- 3848276 TI - Troubleshooting the venous access system. PMID- 3848277 TI - When is the time ripe for teaching? PMID- 3848278 TI - What do patients know about clinical trials? PMID- 3848279 TI - Show and tell. Preparing children for invasive procedures. PMID- 3848280 TI - Go for it! PMID- 3848281 TI - Ethical dilemmas confronting nurses. PMID- 3848282 TI - Nurses' views important on ethical decision team. PMID- 3848284 TI - Patient's right to decide is new value in health care. PMID- 3848283 TI - Care of severely impaired infant raises ethical issues. PMID- 3848285 TI - Truth essential for trust between nurse, patient. PMID- 3848286 TI - Ethics important in allocating health resources. PMID- 3848287 TI - What is nurse's role when adults forego treatment? PMID- 3848288 TI - Standards of child and adolescent psychiatric and mental health nursing practice. PMID- 3848289 TI - Common plasmid encoding resistance to ampicillin, chloramphenicol, gentamicin, and trimethoprim-sulfadiazine in two serotypes of Salmonella isolated during an outbreak of equine salmonellosis. AB - An outbreak of equine salmonellosis occurred at the Veterinary Medical Teaching Hospital, University of California, Davis, between June 1981 and March 1982. Forty-four horses were infected with Salmonella saint-paul, a serotype rarely isolated from animals at the university before the outbreak. Unlike the isolates of S saint-paul obtained at the beginning of the outbreak, almost all strains isolated near the end were resistant to ampicillin, cephalothin, chloramphenicol, gentamicin, kanamycin, sulfadiazine, trimethoprim, and trimethoprim-sulfadiazine. A conjugal-resistance plasmid (R-plasmid) was responsible for resistance to these antimicrobics. This R-plasmid was identical to an R-plasmid of S krefeld, a serotype that had been isolated repeatedly throughout the hospital before, during, and after the outbreak involving S saint-paul. This finding prompted the suggestion that in vivo transfer of the R-plasmid had occurred. Whether the donor organism was S krefeld is unknown. PMID- 3848290 TI - The prevention of elastase-induced emphysema in hamsters by the intratracheal administration of a synthetic elastase inhibitor bound to albumin microspheres. AB - The peptide, succinyl-alanyl-alanyl-prolyl-valine chloromethylketone (SPCK), a synthetic inhibitor of elastase, was covalently attached to human albumin microspheres (HAM) and administered intratracheally to hamsters 15 min and 8 h prior to the instillation of porcine pancreatic elastase. Pressure-volume relationships and histologic examination of excised lungs after 4 wk showed complete protection from emphysema when SPCK-HAM was administered either 15 min or 8 h before elastase exposure. Concurrent experiments with free SPCK showed that protection was achieved only if elastase was administered within 15 min after the instillation of SPCK. Extending this period to 8 h not only led to a failure of free SPCK to prevent emphysema but actually resulted in more extensive air-space enlargement. The prolonged effectiveness conferred by the attachment of SPCK to a biodegradable carrier should reduce the frequency with which it would have to be administered for the therapeutic intervention of emphysema and should minimize any toxic side reactions. PMID- 3848291 TI - Cathepsin activity in cholesteatoma. AB - Collagenolytic cathepsin, presumed to play an important role in bone destruction of cholesteatoma, was investigated in cholesteatoma epithelium, subepithelial granulation tissue, skin from the bony external auditory meatus and, temporal bone. The enzyme extracted from tissues was proven to be lysosomal cathepsin B by SDS gel electrophoresis in the use of human type I and type III collagen. alpha-N benzoyl-DL-arginine-2-naphthylamide HCl (BANA) was supposed to be specific for cathepsin B, and so BANA-hydrolase activity was measured as collagen-degrading cathepsin. The results showed that tissues had cathepsin B with its optimal pH 6.0, and that cathepsin B activity revealed a significant increase in the subepithelial granulation tissue. A strong activity of acid phosphatase found in the subepithelial granulation tissue seems to reflect the existence of an active metabolism of substances in the granulation tissue. These findings suggest that collagen is resorbed in the subepithelial granulation tissue in the presence of cholesteatoma. PMID- 3848292 TI - Complement polymorphism in Colombia. AB - The polymorphism of complement component C3, BF and C4 was studied in an urban population of Bogota, Colombia and for C3 and BF, genetic heterogeneity was further examined among the five villages of the Colombian Andes. For both C3 and BF systems there is considerable variation of allele frequencies among the five villages and overall there is significant heterogeneity among the six population groups studied. PMID- 3848293 TI - Regulation of penicillin-binding protein activity: description of a methicillin inducible penicillin-binding protein in Staphylococcus aureus. AB - The penicillin-binding proteins (PBPs) of two methicillin-resistant strains of Staphylococcus aureus (R2 and R1) were analyzed in cells grown in the absence and in the presence of methicillin. Under the former condition, strain R2 showed the typical PBP pattern of beta-lactam-susceptible strains, while strain R1 showed a markedly increased amount of PBP-3. Under the latter condition, on the other hand, a novel PBP (PBP-2a) located between PBP-2 and -3 was detected in strain R2, while strain R1 appeared to synthesize an even greater amount of PBP-3, in respect to untreated cells. Both R2 PBP-2a and R1 PBP-3 showed a very low affinity for methicillin, which was consistent with the MICs for the respective strains. PMID- 3848295 TI - Perioperative nursing research. Collaboration between clinical nurse and researcher. PMID- 3848294 TI - Occurrence of a beta-lactam-inducible penicillin-binding protein in methicillin resistant staphylococci. AB - The mechanism of methicillin resistance was investigated in methicillin-resistant staphylococci (MRS) and in variants which had lost methicillin resistance. Phase contrast microscopy showed that cells swelled at low concentrations of beta lactam antibiotics in both MRS and variants which had lost methicillin resistance. Cells of variants which had lost methicillin resistance were lysed easily when higher concentrations of antibiotic were used. In contrast, MRS cells remained swollen at even higher concentrations of antibiotics. Furthermore, bacterial growth was inhibited at antibiotic concentrations much lower than MICs for MRS. Examination of the penicillin-binding proteins (PBPs) in MRS revealed that a new PBP-2' (molecular weight, 74,000) was induced in large quantity by exposure to beta-lactams. PBP-2' was produced constitutively in variants of MRS which had lost a penicillinase plasmid. The induction of PBP-2' by beta-lactams was not detected in variants which had lost methicillin resistance. High concentrations of beta-lactam were required for saturation of PBP-2'. The optimum antibiotic concentration for the induction of PBP-2' varied with the beta-lactam used as the inducer, and PBP-2' was produced in a larger amount at 32 degrees C than at 37 degrees C. From these results, we suggest that the mechanism of methicillin resistance depends on the induction of PBP-2', which may function as a detour enzyme for PBP-2 or PBP-3 or may be a particular enzyme involved in peptidoglycan synthesis. PMID- 3848296 TI - Research projects. Obtaining AORN endorsement and funding. PMID- 3848297 TI - Critiquing research. Steps for complete evaluation of an article. PMID- 3848298 TI - Monitoring waste nitrous oxide. One medical center's experience. PMID- 3848299 TI - Cerebral occlusion. Extracranial-intracranial anastomosis. AB - Between 1967 and 1982, EC-IC anastomoses were performed on 143 patients with obstructive cerebrovascular lesions at our hospital. Bypasses were patent in 93% of these patients, which was verified by Doppler examination or by both Doppler exam and angiography. Half as many patients with a patent bypass experienced further cerebrovascular events, compared to the expected number if the problem was left untreated. Recovery from mild neurological deficits or completed stroke was observed in 23 patients. As clinical experience increases, it becomes clear that EC-IC anastomoses are an important and effective treatment for patients suffering from obstructive cerebrovascular disease. PMID- 3848300 TI - Behind closed doors. Enhancing the image of perioperative nursing. PMID- 3848301 TI - The effect of quality of life and sanctity of life on clinical decision making. PMID- 3848302 TI - Using a computer to coordinate staff and meet patients' needs. PMID- 3848303 TI - Protecting human subjects involved in research. PMID- 3848304 TI - The challenge for leaders is to help their employees succeed. PMID- 3848305 TI - Party planning ideas help in education program planning. PMID- 3848306 TI - Sabbaticals for nurses--more than a break from the routine. PMID- 3848307 TI - Can the RN first assistant be held liable for patient injury? AB - In summary, if an action of the RN first assistant causes a patient injury, both the primary surgeon and the RN first assistant could be liable. The primary surgeon could be liable for failure to see that the operation was performed with due care. At least one state appellate court has found that this is a nondelegable duty of the primary surgeon. The RN first assistant could be liable if the action that caused the patient injury was not in accordance with what a reasonable and prudent first assistant would have done. If first assisting is included within the scope of nursing practice by rule or statute in that state, the RN first assistant action could be measured against what an RN first assistant would have done, even though first assisting has traditionally been a physician's role. The fact that first assisting may be within the scope of nursing practice for some procedures and patient conditions does not mean the nurse should be allowed to assist on all procedures or in all patient conditions. The institution may have an independent duty to its patients to determine which patient procedures and conditions are appropriate for an RN first assistant. PMID- 3848308 TI - Intraoperative monitoring. The EEG monitor can be a window to the brain. PMID- 3848309 TI - C-sections in the delivery room. Orienting the staff. PMID- 3848310 TI - Single table OR instrument setup. Streamlining setups and costs. PMID- 3848311 TI - Learning how to manage. A management education series. PMID- 3848312 TI - Perioperative functions. Classification of knowledge and required skills. AB - The study results form a beginning framework from which values of resource appropriateness could be developed, which was the original intent of this study. An algorithm could be designed to score an individual's formal and informal training in specific skills as they relate to the O-Types identified. These results could be translated into resource appropriateness scores under each of the four factors. The results also provide a means for simplifying categories of the Operating Room Staffing Model and provide a beginning framework to assess resource appropriateness. PMID- 3848313 TI - Active vs passive euthanasia--where's the distinction? PMID- 3848314 TI - Every nurse must be a problem solver. PMID- 3848315 TI - Effect of glycerol on protein acetylation by acetic anhydride. AB - We investigated the basis for the previously unexplained stabilization of proteins by glycerol during reaction with acetic anhydride [S. Siegel and W. M. Award, Jr. (1973) J. Biol. Chem. 248, 3233-3240]. Model studies showed that glycerol competes successfully for acetylation against protein hydroxyl groups. In contrast, amino groups are much more potent nucleophiles and their acetylation is not apparently affected. Since alpha-amino and phenolic pKa's did not change significantly in increasing glycerol concentrations, these findings are ascribed to glycerol's lower pKa value as compared to water, leading to the decreased acetylation of tyrosine, threonine, and serine hydroxyl groups in Pronase guanidine-stable chymoelastase. An additional mechanism is important and predominates in the protection against inactivation of bovine delta-chymotrypsin during acetylation and is explained by the recently described basis for protein stabilization in glycerol [K. Gekko and S. N. Timasheff (1981) Biochemistry 20, 4667-4676; 4677-4686]. Those studies demonstrated that glycerol increased the hydrophobicity of nonpolar residues, augmenting their tendency to be removed from protein surfaces. Therefore, the stabilization afforded by glycerol for chymotrypsin is attributed in part to a favoring of the native folded state which forces the side chains of isoleucine-16 and valine-17 to be buried, increasing the apparent pKa of the alpha-amino group of isoleucine-16 as it forms the charge pair with the beta-carboxyl group of aspartate-194. This conclusion was supported by stopped-flow analyses of the interaction of delta-chymotrypsin with proflavin in increasing concentrations of glycerol. PMID- 3848316 TI - Localization of cathepsin H and its inhibitor in the skin and other stratified epithelia. AB - The rat-skin-derived cysteine proteinase, so-called BANA-hydrolase, which is capable of hydrolysing benzoylarginine naphthylamide and leucine naphthylamide was shown to be immunologically identical to cathepsin H purified from rat liver. The enzyme was immunocytochemically localized in the basal cell layer of rat epidermis. A natural inhibitor of cathepsin H with a molecular weight of about 13,000 was mainly localized in the keratinizing cell layers and showed only a weak reaction in the basal cells. Thus, cathepsin H appears to be a characteristic feature of the proliferating cell layer, whereas the cysteine proteinase inhibitor is a characteristic feature of keratinizing cells. PMID- 3848317 TI - Assuring informed choice: a literature review. PMID- 3848318 TI - Dialysis osteomalacia and aluminum toxicity: a form of renal osteodystrophy. PMID- 3848319 TI - "Normal" life--a goal for the child with chronic renal failure. PMID- 3848320 TI - A comparison of dextrose infusions in diabetic hemodialysis patients. PMID- 3848321 TI - Nephrology nursing consult: case study. Stabilizing catheters. PMID- 3848323 TI - How well does a nurse supervisor know her nurses? Before--and after 10 years. PMID- 3848322 TI - Psychodrama-one way of coping. PMID- 3848324 TI - Recognizing community needs. PMID- 3848325 TI - Linen use in incontinence: a pilot study. PMID- 3848326 TI - Identifying nursing realities. PMID- 3848328 TI - Migraine and its treatment. Part two. PMID- 3848327 TI - Age of consent and the sexual dilemma. Nurse & the law. PMID- 3848329 TI - Cytotoxicity-related alterations of selected cellular functions after in vitro vanadate exposure. AB - A bovine kidney cell line was used to monitor select cellular functions for toxicity-dependent alterations in an effort to examine the cellular response to vanadium insult. The vanadium concentrations utilized ranged between 20 and 500 microM Na3VO4 (V) and elicited 15-60% cytotoxicity. Cytotoxicity-related decreases in thymidine incorporation into DNA and leucine incorporation into protein were noted. Paradoxically, V-treated cultures exhibited increased protein and DNA content, suggestive of a decrease in precursor transport. K+-dependent phosphatase (KP), acid phosphatase (AP) and succinate dehydrogenase (SDH) were monitored in surviving cells and in a cell-free system. Significant inhibitions were detected for KP and AP; SDH exhibited slight enhancement. In the cell-free system, KP was inhibited significantly at 10(-7) M V, while AP and SDH were either unchanged or sensitive only at concentrations of 10(-4) M V or greater. Measurement of reduced glutathione (GSH) in surviving cells revealed toxicity dependent increases of up to 500% of control values. When compared to the cellular V content, the GSH:V molar ratio decreased from 1.7 to 0.5 as cell survival decreased. PMID- 3848330 TI - Inhibition of human leukocyte elastase, cathepsin G, chymotrypsin A alpha, and porcine pancreatic elastase with substituted isobenzofuranones and benzopyrandiones. AB - Several 3-halo-3-(1-haloalkyl)-1(3H)-isobenzofuranones, 3-(1-haloalkylidene) 1(3H)-isobenzofuranones, and 3-bromomethyl-1H-2-benzopyran-1-ones containing masked halo ketone functional groups were synthesized and tested as inhibitors of several serine proteases including human leukocyte (HL) elastase and cathepsin G. While many of the 3-halo-3-(1-haloalkyl)-1(3H)-isobenzofuranones were quite potent inhibitors of the enzymes tested, the alkylideneisobenzofuranones and benzopyran-1-ones inhibited poorly or not at all. The 3-halo-3-(1-haloalkyl) 1(3H)-isobenzofuranones decomposed rapidly upon addition to buffer to give the corresponding 3-alkyl-1H-2-benzopyran-1,4(3H)-diones. The pure benzopyran-1,4 diones were extremely potent inhibitors of HL elastase and chymotrypsin A alpha but did not inactivate porcine pancreatic elastase or cathepsin G. Enzymes inhibited by the isobenzofuranones and benzopyran-1,4-diones regained activity slowly upon standing or after dialysis (t1/2 = 5-16 h) and more rapidly in the presence of 0.5 M hydroxylamine, which indicated the presence of labile acyl moieties in the inhibited enzyme. These results are consistent with a scheme in which the active site serine of the protease reacts with the lactone carbonyl of these inhibitors to give a stable acyl enzyme and alkylation of another active site residue by the unmasked halo ketone functional group does not occur. PMID- 3848331 TI - Interdependence of mitochondrial ATP production and extramitochondrial ATP utilization in intact spermatozoa. AB - The dependence of both respiration and total activity of ATP-consuming reactions on the cellular adenine nucleotide pattern was investigated in intact bovine spermatozoa. ATP consumption was manipulated by inhibition with vanadate and activation with caffeine, leading to a decrease or increase in the rate of respiration up to 70% or 20%, respectively. Oligomycin blocked the respiration to the same extent as did vanadate, suggesting that the total extramitochondrial ATP consuming activity is vanadate-sensitive. The major part of ATP utilization must be linked to dynein ATPase, since inhibition of (Na+, K+) ATPase by ouabain showed only a small effect on respiration (-17%). Being a potent inhibitor of dynein ATPase, vanadate drastically reduced the amount of motile cells, whereas caffeine tended to increase the intensity of motion. The effects of vanadate or caffeine on respiration were paralleled by changes in cellular ATP, reflecting the response of mitochondrial respiration on the cellular ATP/ADP ratio. Respiration was found to depend on changes in the ATP/ADP ratio in the range from about 3 (+caffeine) to 9 (+vanadate). The range of response of ATP consumption to the ATP/ADP ratio was determined by varying the mitochondrial ATP production via the concentration of lactate which was used as substrate. The measured effects on both respiratory rate and ATP/ADP ratio suggested that ATP consumption was markedly dependent on ATP/ADP ratios below 5. It is concluded that lactate concentrations above 1 mM sufficiently supply bovine spermatozoa with substrate and the energy turnover is mainly limited by the activity of dynein ATPase rather than by the capacity of mitochondrial oxidative phosphorylation. PMID- 3848332 TI - 2'(3')-O-L-Phenylalanyl derivatives of N2,5'-anhydroformycin and N4,5' anhydroformycin: new substrates for ribosomal peptidyltransferase with a fixed anti and syn conformation of the base. AB - The 2'(3')-O-L-phenylalanyl-N2,5'-anhydroformycin (1c) and 2'(3')-O-L phenylalanyl-N4,5'-anhydroformycin (2c), obtained by chemical synthesis, are substrates for ribosomal peptidyltransferase from Escherichia coli. Nucleoside 1c, which mimics an anti conformation of antibiotic formycin, has 80% of the acceptor activity of puromycin at 5 x 10(-4) M determined by the release of N-Ac Phe residue from the 70 S ribosome-poly(U)-N-Ac-[14C]Phe-tRNA complex. The reaction product, 2'(3')-O-(N-acetyl)-L-phenylalanyl-L-phenylalanyl-N2,5' anhydroformyc in (1d), was characterized by paper electrophoresis before and after alkaline hydrolysis. By contrast, nucleoside 2c, which resembles a syn conformation of formycin, exhibited only 20% of the acceptor activity of puromycin at 5 x 10(-4) M. The results which are in accord with previous models have shown that a substrate with its base in an anti conformation is preferable for the acceptor site of peptidyltransferase than the corresponding syn counterpart. Nevertheless, it is possible that an intermediate conformation, for example, high anti (amphi-minus), is an optimal arrangement for acceptor site substrates. PMID- 3848333 TI - Normal hematological values of the African neonate. AB - A longitudinal study of normal hematological values of the newborn infant was undertaken in an effort to provide baseline data for assessing the African Neonate with hematological problems. There were 402 neonates, consisting of 304 full-term, 51 preterm and 47 post-term infants. The Hematocrit (Hct), Hemoglobin (Hb), Red Blood Cell Count (RBC), Reticulocyte count (Retic) and Nucleated Red Blood Cell Count (NRBC) were serially determined. The red cell indices, Mean corpuscular Hemoglobin (MCH), Mean Corpuscular volume (MCV) and Mean corpuscular Hemoglobin Concentration (MCHC) were calculated for each neonate. Our results showed that African neonates have lower hematological values than their North American and European counterparts. This was neither a reflection of an intrauterine anemia nor was it due to variables resulting from the timing of cord blood sampling. On the first day of life, the mean Hct was 45.4%; mean Hb was 15.46 gm/dl; and the RBC was 4.02 X 10(6) cells/mm2. The Retics, NRBC and other red blood cell indices do not differ from those of neonates reported from other parts of the world. We suggest therefore that the low hematological values of the African neonate may be intrinsic. PMID- 3848334 TI - Inhibition by pesticides of prostaglandin formation in blood platelets. AB - Aggregation of human platelets was investigated after pre-incubation of platelet rich plasma with various pesticides of the carbamate type. Whereas N-methyl carbamates (insecticides) inhibited the arachidonic acid induced aggregation, N phenyl-carbamates (herbicides) had no effect. The influence of the different carbamates on aggregation coincided with their inhibition of thromboxane B2 formation. - DDE, a metabolite of the insecticide DDT, affected aggregation to a similar extent as N-methyl-carbamates. DDT, however, had no inhibitory activity. PMID- 3848335 TI - Ferritin in erythrocytes and plasma of patients with iron overload. AB - Erythrocyte and plasma ferritin was followed in 13 patients with iron overload undergoing phlebotomies for at least 6 months in comparison with untreated patients and normal males. Plasma ferritin was widely scattered with an average of only twice the normal, whereas erythrocyte ferritin was highly elevated to about twelve times the normal (p less than 0.0001). - The time course of plasma and erythrocyte ferritin during phlebotomy therapy was analyzed in 3 patients with idiopathic hemochromatosis. Three stages were established: 1. plasma ferritin dropped gradually into the normal range while erythrocyte ferritin remained high, 2. appropriate phlebotomies maintained normal plasma ferritin and high erythrocyte ferritin, and indicated a monthly uptake of dietary iron of 150 200 mg at a steady state, 3. at low plasma ferritin levels, erythrocyte ferritin was rapidly decreased by further intensive phlebotomy therapy. Based on the presumed net removal of iron, 1 microgram/l plasma ferritin was equivalent to 3-6 mg of body iron and 1 microgram/l erythrocyte ferritin to somewhat less than 1 mg of body iron. - An elevated erythrocyte ferritin during phlebotomy therapy in iron overload not only depends on body iron stores like plasma ferritin but may also be regulated by the activity of erythropoiesis. PMID- 3848337 TI - Transferrin in isolated cells from rat duodenum and jejunum. AB - Mucosal transferrin was determined as transferrin-like immunoreactivity (TLIR) by means of a 2-site immunoradiometric assay (IRMA). Scraped-off mucosal tissue as well as isolated mucosal cells from the duodenum and jejunum of normal and iron deficient rats before and after a washing procedure were examined. In iron deficient rats there was about twice as much TLIR in scraped-off mucosal tissue as in the untreated animals. In the duodenum and jejunum of normal and iron deficient rats, TLIR contents of the isolated cells in the magnitude of 320-510 ng/mg dry weight were found. Washing isolated cells three times in ice-cold Hank's solution resulted in a nearly tenfold decrease of TLIR content in all groups. In contrast the cells' RNA content remained unchanged. PMID- 3848336 TI - The effect of erythropoietin on the mature burst forming unit erythroid in mice. AB - The aim of the study was to further delineate the erythropoietin (Ep) dependence of the mature Burst Forming Unit-Erythroid - BFU-E(d4). Experiments were performed in normal and polycythemic CBA mice. BFU-E(d4) were determined by means of the methylcellulose culture technique. It was demonstrated that in plethoric mice the number of BFU-E(d4) is reduced from 9 000/femur and 30 000/spleen found in normal mice to less than 1 000/femur and 2 000/spleen on day 6 post-hypoxia. The number of BFU-E(d4) remained low both in the bone marrow and spleen in mice with posthypoxic polycythemia between days 6 and 11 post-hypoxia. When exogenous Ep was injected into the plethoric mice the number of BFU-E(d4) increased after 24 h both in the bone marrow and spleen. In Ep stimulated polycythemic mice the CFU-E:BFU-E(d4) ratio did not achieve normal values, indicating that although Ep stimulation increased the number of BFU(d4), the number of CFU-E produced per BFU E(d4) was lower than in normal nonpolycythemic mice. The results obtained indicate that BFU-E(d4) population size depends on the effect of Ep on differentiation and proliferation of erythroid committed precursors. PMID- 3848338 TI - Fashioning the future. Nursing 2020. PMID- 3848339 TI - Camp nursing. PMID- 3848340 TI - The principle of justice. PMID- 3848341 TI - The competency question. PMID- 3848342 TI - The evolution of the Code for Nurses. PMID- 3848343 TI - Responding to the media. PMID- 3848344 TI - Refugee training program yields bicultural LVNs. PMID- 3848345 TI - An Apple a day: Rx for computer anxiety in nurse educators. PMID- 3848346 TI - Assessment of nurses' attitudes toward computerization. PMID- 3848347 TI - Trans splicing of mRNA precursors. AB - Using modified adenovirus and beta-globin transcription units, I constructed pairs of transcripts that contained mutually complementary sequences in their introns. Upon incubation of the annealed transcripts in a cell-free splicing system, an exon from one member of the dimeric complex was accurately spliced to an exon from the other. The occurrence of such intermolecular, or trans, splicing in vitro raises the possibility that some of the mRNAs in a cell acquire exons from more than one primary transcript. PMID- 3848348 TI - Trans splicing of mRNA precursors in vitro. AB - Two exon segments from two separate RNA molecules can be joined in a trans splicing process. In trans splicing reactions, an RNA molecule containing an exon, a 5' splice site, and adjacent intron sequences was mixed with an RNA molecule containing an exon, a 3' splice site, and adjacent intron sequences. The efficiency of trans splicing of these two RNAs increased if the two termini of the intervening sequences were paired in a short RNA duplex. However, trans splicing of two RNA molecules with no significant complementarity was also observed. These results strongly suggest that significant secondary structures within intervening sequences could affect the splicing of flanking exons. Similarly, RNAs that are complementary to segments within the intervening sequences could potentially regulate the selection of splice sites. Finally, some organisms might use trans splicing to distribute a single exon to many different mRNAs. PMID- 3848349 TI - [Career choice of students not selected for the generic degree program in nursing in the R.S.A]. PMID- 3848350 TI - A child in need of care--Guillain Barre syndrome. PMID- 3848351 TI - [A study of nursing personnel shortage in Transvaal provincial hospitals, 1983]. PMID- 3848352 TI - Orientation. PMID- 3848353 TI - Why not a nurse demographer? PMID- 3848355 TI - To breastfeed or not to breastfeed? That is the question. PMID- 3848354 TI - [Health education--two cultures]. PMID- 3848356 TI - [A futuristic observation]. PMID- 3848357 TI - Caring about care-givers: a study of child care workers in Cape Town. PMID- 3848358 TI - The nursing student at the University of South Africa. PMID- 3848359 TI - [Computers in nursing. 3. Level of care and cost-effective service delivery using an computerized patient classification system]. PMID- 3848360 TI - Singapore--the nursing scene. PMID- 3848361 TI - Graduate education viewed as a crisis. PMID- 3848362 TI - Tennessee right to natural death act "living will". PMID- 3848364 TI - Storage volume of computer tomography images can be reduced by a factor of five. AB - The object of this study is the data compression of CT scans of the brain. A circle is first established which contains all pixels inside the head while minimizing the insignificant area, after which the portion outside the circle so obtained is eliminated. The data are then truncated at CT values of +/- 127 and the differences of two consecutive pixel values are converted into variable length codes. The coding algorithms employed are the well-known Huffman code and our packet coding, both of which achieved a data compression ratio of 20%. PMID- 3848363 TI - A new parametric frequency-wavenumber spectrum estimation algorithm and its application to the analysis of 3-dimensional epicardial ECG signals. AB - This paper presents a 3-dimensional (3-D) frequency-wavenumber spectrum estimation (FWSE) approach to the analysis of ECG signals. This approach treats the data as 'wavefronts plus noise' and provides a means of estimating key parameters associated with propagating wavefronts. A high resolution technique based on minimum variance representations of 3-D data fields (3-D CLS technique) is employed to obtain the FWSE. Computer simulation results that demonstrate the high resolution property of the technique when compared with the maximum likelihood method of Capon are presented. Results of application of the technique to epicardial ECG data collected from a sensor array are also presented and discussed. PMID- 3848365 TI - A microcomputer-based system for real-time calculation of airway conductance in awake guinea pigs. AB - Bronchial responsiveness to various drug stimuli is currently studied by constructing cumulative dose-response curves of specific respiratory conductance (SG). Airway conductance can be measured in guinea pigs by the plethysmographic technique, during the rapid transition from expiration to inspiration (TEI). Since the drug action assigns a strict timing to the experiment, conventional methods of measuring SG prove inconvenient and often lack accuracy. A computerized data acquisition system has therefore been developed to recognize TEI and calculate SG in real time. This paper describes the significant features of the program DOREMI, and gives an illustrative example of the system in use. PMID- 3848366 TI - Microcomputer analysis and management of residency training experiences. PMID- 3848367 TI - PCS System I: point counting stereology programs for cell biology. AB - PCS System I (PCS) is a set of four software modules designed to simplify the application of stereology to problems in cell biology. It is written in BASIC for the Tektronix 4052A microcomputer (Beaverton, OR). A Counting Module collects raw data counts in either a Density Mode (points, intersections, transections, profiles) or a Boundary Mode (intersections with complete nuclear profiles). This information is stored on tape or disk data files and can also be printed. Three analysis modules use data files created with the Counting Module. The Density Module uses Density Mode data files to calculate volume, surface, length, and numerical densities. The B Numerical Density Module uses both Boundary Mode and Density Mode data to calculate the means for the boundary, diameter, and surface area of a nuclear compartment. The mean nuclear surface area is then used with the nuclear surface density to estimate the nuclear numerical density, which, in turn, is used to calculate surface areas of membrane compartments in average cells and in 10(6) cells. The Format Module reformats raw data files for analysis with Tektronix statistical software. PMID- 3848368 TI - Statistical analysis of cell directions in applied current experiments. AB - A program has been developed to analyze cell directions sampled during the course of experiments in which uniform electrical currents are passed over cells grown in tissue culture. The program can test data sets for statistically significant orientation, i.e. clustering about a certain mean angle, and can also perform a pairs test between two data sets to determine whether there is a significant difference in orientation between them. PMID- 3848370 TI - Trouble-free travel. PMID- 3848369 TI - GFREG: a computer program for maximum likelihood regression using the Generalized F distribution. AB - A FORTRAN program is described for maximum likelihood estimation within the Generalized F family of distributions. It can be used to estimate regression parameters in a log-linear model for censored survival times with covariates, for which the error distribution may have a great variety of shapes, including most distributions of current use in biostatistics. The optimization is performed by an algorithm based on the generalized reduced gradient method. A stepwise variable search algorithm for covariate selection is included in the program. Output features include: model selection criteria, standard errors of parameter estimates, quantile and survival rates with their standard errors, residuals and several plots. An example based on data from Princess Margaret Hospital, Toronto, is discussed to illustrate the program's capabilities. PMID- 3848371 TI - Stoma care: special babies. PMID- 3848372 TI - Health visiting: from Batley to Alipor. PMID- 3848373 TI - Nurse profile. PMID- 3848374 TI - A day in the life of Joyce Millikin visiting nurse. PMID- 3848375 TI - Enzymes in organic synthesis. PMID- 3848376 TI - Extending the applicability of esterases of low enantioselectivity in asymmetric synthesis. AB - A strategy for expanding the applicability of esterases of low enantioselectivity for asymmetric synthesis is described. This concept is generally applicable to biochemical processes involving enantiotopic group differentiation. Quantitative expressions have been derived to permit the prediction of enantiomeric excess and the optimization of optical and chemical yields. PMID- 3848377 TI - Microbial transformations of some monoterpenoids and sesquiterpenoids. AB - The absolute configurations of fragrances, flavours and drugs are often important for their special properties. The growing interest of organic chemists in chiral synthons has stimulated work on biotransformations, for which readily available and inexpensive compounds can be used as substrates. Microbial transformations of 1-menthenes like gamma-terpinene, alpha-terpinene, limonene and alpha phellandrene give the corresponding 1,2-trans-diols with high stereospecificity. Because of the volatility and toxicity of these substrates, and their low solubility in aqueous solutions, a special fermentation technique has been developed in which the terpenes are fed continuously to extended cultures of Corynespora cassiicola or Diplodia gossypina. (4R)-Limonene is transformed by Gibberella cyanea to (1S,2S,4R)-p-menth-8-en-1,2-diol, but 3,3,5,5-tetramethyl limonene yields a 6-monohydroxylated product and a 6,10-dihydroxylated product with a 6-hydroxy-8,10-epoxy structure as the main metabolite. Vicinal diols are also formed from aliphatic terpenes, by reaction at the terminal isoprenoid groups. Some oxirane structures are found as intermediates. Acyclic sesquiterpenes often form complex mixtures when they are metabolized further. The products of the transformation of trans-nerolidol by several fungi are given as examples. Cyclic sesquiterpenes, with less flexible structures, are oxidized more specifically. Whereas longifolene is a very poor substrate for Corynespora cassiicola, isolongifolene is always hydroxylated at one of the methyl groups attached to C-7. The 14- or 15-hydroxy compounds are further oxidized, very fast, in the 3 position or 4 position. PMID- 3848378 TI - Synthesis of tetrahydrofolate derivatives. PMID- 3848379 TI - Immobilized enzymes in organic synthesis. AB - The immobilization of enzymes and cells by different methods and the possible stabilization of immobilized preparations are discussed. An outlook on 'second generation enzyme technology', which involves immobilized multi-enzyme systems and coenzymes, is given with examples: the immobilization of dehydrogenases with their active sites facing one another, and systems containing NAD(H) coenzymes immobilized by coupling to dextran (in an enzyme electrode), to polyethylene glycol (in a membrane reactor), or to enzymes themselves. The use of immobilized enzymes to synthesize peptides and disaccharides is described. PMID- 3848380 TI - Enzymic synthesis of 5,6-dihydroxycyclohexa-1,3-diene. PMID- 3848381 TI - Applications of cell-free enzymes in organic synthesis. AB - Enzymes are a potentially useful addition to the group of catalysts used in practical organic synthesis for the preparation of biologically relevant substances. This paper outlines certain of the problems still limiting the use of enzymic catalysts, and illustrates successful applications to the synthesis of complex molecules: phosphoribosyl pyrophosphate, ribulose 1,5-bisphosphate and lactosamine. Certain problems peculiar to enzymic catalysis--product inhibition and specific activity--are discussed. PMID- 3848382 TI - Ineffective airway clearance: physiology and clinical application. PMID- 3848383 TI - Thrombotic thrombocytopenia purpura. PMID- 3848384 TI - Preventing complications for the toxic shock syndrome patient. PMID- 3848385 TI - Using a microcomputer for intravenous drug protocols. PMID- 3848386 TI - Reducing conflicting information: developing a nurse-physician liaison pair. PMID- 3848387 TI - Organizing an in-house critical care course. PMID- 3848388 TI - How to prepare self-instructional programs for critical care staff education. PMID- 3848389 TI - The cephalosporins. PMID- 3848390 TI - Infant bronchopulmonary dysplasia: crisis and chronicity. PMID- 3848391 TI - Promoting the professional practice of nursing at Harbor-UCLA Medical Center. PMID- 3848393 TI - Profile of nursing Harbor-UCLA Medical Center. PMID- 3848392 TI - Quality assurance in nursing. PMID- 3848394 TI - A regional Perinatal Health System for the West Area of Los Angeles County Health Services. PMID- 3848395 TI - Antepartum testing. PMID- 3848396 TI - Physiologic jaundice in the newborn: can early feedings reduce the incidence? PMID- 3848397 TI - Multiple sclerosis: an overview and a patient's perspective. PMID- 3848398 TI - Teamwork for Tammy. PMID- 3848399 TI - Genes for the alpha and gamma subunits of mouse nerve growth factor are contiguous. AB - Here we describe the structure and linkage of genes encoding the alpha and gamma subunits of mouse nerve growth factor (NGF). These genes are members of the highly homologous glandular kallikrein multigene family. Together with the beta subunit, the alpha and gamma proteins constitute the high mol. wt. (7S) form of NGF isolated from mouse submandibular gland. The gamma subunit is an active serine protease and is thought to cleave pro-beta-NGF to generate the mature growth factor. The alpha subunit has no detectable proteolytic activity, but is essential for the stable formation of 7S NGF. Lack of enzyme activity of the alpha subunit can be attributed, at least in part, to the deletion of 15 nucleotides in a highly conserved coding region which is normally involved in the activation of serine proteases from their inactive zymogen form. PMID- 3848400 TI - Evidence for coiled-coil alpha-helical regions in the long arm of laminin. AB - Three new laminin fragments, E8, E9 and 25K with mol. wt. 50 000-280 000, were prepared from a limited elastase digest of laminin and from tissue extracts. They were similar with respect to their rod-like structure, a high alpha-helix content, the assembly from two chain segments and immunological cross-reactivity. Two of the fragments (E8 and E9) possess in addition globular domains which lack alpha-helices. Chemical, immunological and physical data together with sequence analysis strongly indicate that the alpha-helical segments are assembled in coiled-coil structures which are located in the rod of the long arm of laminin. These data give new insights into the overall structure of the protein. PMID- 3848401 TI - Activation of a cellular tyrosine-specific protein kinase by phosphorylation. AB - A tyrosine-specific protein kinase of Mr 56 000 was purified over 200-fold from rat spleen. Incubation of this kinase preparation with ATP and Mg2+ results in about 10-fold increase in the protein kinase activity. The activation of the kinase was unaffected in the presence of soybean trypsin inhibitor. Polyacrylamide gel electrophoresis of the enzyme preparation after phosphorylation with ATP showed one phosphoprotein band of Mr 56 000. During purification of this kinase a large decrease in enzyme activity was observed which could be prevented by adding 10 microM vanadate, as inhibitor of tyrosine specific protein phosphatases. These results suggest that the activation of the protein kinase by ATP is due to phosphorylation of the enzyme. PMID- 3848402 TI - Frontier School and Case Western Reserve University join in affiliation to advance nursing education. PMID- 3848403 TI - Diony Young exhorts graduates to stress "high-touch" and caring in nursing practice. PMID- 3848404 TI - The FNS Medical Directives--the historical innovation that has assured the best in rural health care. PMID- 3848405 TI - Another family with a silent allele of properdin factor B polymorphism (BF QO). AB - In five of eight members of a three generation family the existence of a silent allele of the properdin factor B polymorphism (BF QO) was indicated by immunofixation of BF electrophoretic variants and by the hemolytic overlay after isoelectric focusing of BF allotypes. This was further supported by the results of HLA-A, B, C, DR, C2, C4A, C4B, GLO-typing. BF protein was decreased in all heterozygous BF deficient family members. The absolute hemolytic activity, however, was obviously compensated for by an increased relative functional activity of the normal S or F alleles on the other chromosome. PMID- 3848406 TI - Stool culture as a diagnostic aid for intestinal amoebiasis. PMID- 3848407 TI - Usefulness of serological markers of viral hepatitis. PMID- 3848408 TI - Utility of culture technique for both faeces and biopsy material for the diagnosis of Entamoeba histolytica. PMID- 3848409 TI - Comparison of endoscopic and histological features of duodenitis. PMID- 3848411 TI - Alcoholic liver disease in Punjab. PMID- 3848410 TI - Solubilization of rat intestinal microvillus membranes with sodium dodecyl sulphate: changes in kinetic properties of alkaline phosphatase. PMID- 3848412 TI - Primary neoplasms of the small bowel. PMID- 3848413 TI - Fulminant hepatic failure and artificial liver support. PMID- 3848414 TI - Extrahepatic choledochal obstruction in carcinoma cervix. PMID- 3848415 TI - Heparin and lieno-renal shunt patency. PMID- 3848416 TI - Spontaneous disappearance of gastric polyps. PMID- 3848417 TI - Triclosan: Safe or unsafe? PMID- 3848418 TI - Hepatitis B surface antigen testing. PMID- 3848419 TI - Prolonged hospital epidemic of salmonellosis: use of trimethoprim sulfamethoxazole for control. AB - The occurrence of a foodborne outbreak of Salmonella drypool, an uncommon serotype, led to the recognition of hospital-acquired cases occurring over a 5 year period. In late 1981, a catered luncheon resulted in an epidemic of S. drypool, and in retrospect, cases were found to have been occurring in hospital patients from 1977 until 1981. Over the next 4 months, patients, employees, and 50% of the kitchen workers became infected, despite repeated culture surveys of the staff and removal of all infected workers. Food and environmental cultures failed to reveal the source of infection, but infected workers were observed to have multiple negative cultures over several months and then to become positive again. Closing of the kitchen for 2 weeks failed to stop the epidemic. Finally, all kitchen employees, both infected and uninfected, were treated with trimethoprim-sulfamethoxazole for 2 weeks. After treatment, no new kitchen workers became infected, although two workers who had had positive cultures earlier in the epidemic began to excrete S. drypool again, and the epidemic ended. PMID- 3848420 TI - Hospital usage of parenteral antimicrobial agents: a gradated utilization review and cost containment program. AB - Forty percent to 60% of antimicrobial agents administered in hospitals without effective antimicrobial review and control programs are not needed. Excessive use of antimicrobial agents in the hospital promotes colonization of patients with resistant organisms, needlessly exposes them to the risk of an adverse drug reaction, and increases the cost of care. A gradated antimicrobial utilization review program is presented that determines hospital usage, develops guidelines for appropriate cost-effective drug administration, provides several options for implementation, and monitors outcome so that measures can be modified for specific situations. The techniques used are basic epidemiologic measures currently used to assess hospital infections. PMID- 3848421 TI - Bedside resuscitation bags: a source of bacterial contamination. AB - Resuscitation bags at the bedside of 12 intubated ICU patients with known culture positive sputum were evaluated as possible reservoirs of pathogenic bacteria. As oxygen was constantly flowing into the bags, sampling of gas continuously emitted from the exhalation valve assembly was sampled to detect if a bacteria-laden aerosol was being created. Positive cultures were obtained from 75% of the valves and 25% of the aerosol samples. In those patients with gram-negative bacteria in their sputum, 71% of the valves and 29% of the gas samples were positive for the same organisms. Various methods to control this possible contributing factor to nosocomial infection in the ICU are discussed. PMID- 3848422 TI - How frequent are outbreaks of nosocomial infection in community hospitals? AB - A statistical algorithm was used to identify potentially important clusters among nosocomial infections reported each month by 7 community hospitals. Epidemiologic review and on-site investigations distinguished outbreaks of clinical disease from factitious clusters. In 1 year, 8 outbreaks were confirmed. They involved 82 patients--approximately 2% of patients with nosocomial infections and 0.09% of all discharges. One true outbreak occurred for every 12,000 discharges--at least 1 outbreak per year for the average community hospital. Five (63%) outbreaks were recognized independently by the hospitals' infection control personnel. Four (50%) resolved spontaneously; the hospitals' own control measures were necessary in 2; and 2 resolved only after an outside investigation. Organized surveillance appears necessary to detect some outbreaks, and control measures are needed to stop many. Since, however, outbreaks account for such a small proportion of nosocomial infections, infection control programs should be sufficiently staffed and managed so that most of the effort is directed toward the surveillance and control of endemic infection problems, but with adequate resources remaining to respond to outbreaks when they occur. PMID- 3848423 TI - 70% alcohol disinfection of transducer heads: experimental trials. AB - We investigated the feasibility of transducer head disinfection with 70% alcohol wipes. In the initial trial, nine gas-sterilized transducers were inoculated with an estimated 5 X 10(6) organisms of a clinical isolate of Enterobacter cloacae, mimicking a contaminated fluid couple. A sterile disposable transducer dome was attached to each transducer. The units were allowed to sit for 24 hours at room temperature; the domes were then removed. Three transducer heads were cultured prior to disinfection to ensure that viable organisms remained. Each transducer head was wiped clean with a single alcohol wipe, allowed to dry, and then cultured. All nine cultures showed growth of E. cloacae. A second series of trials with 54 transducers employed an identical protocol, except that each transducer head received not one, but two, applications of alcohol. In addition to E. cloacae (26 runs), Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans were employed in nine, nine and ten runs, respectively. Cultures of 53 of 54 transducer heads showed no growth; the single positive culture was attributed to an error in technique. These preliminary results suggest that the double-alcohol-wipe technique may be an easy, cost-effective, alternative or supplemental method of transducer head disinfection. However, we do not advocate routine implementation of this technique in patient care settings until clinical trials confirm its safety and efficacy. PMID- 3848424 TI - False positive PPD reactions. PMID- 3848425 TI - Amphotericin--how safe and effective? PMID- 3848426 TI - Chronic respiratory patients: a new challenge for home health nursing. PMID- 3848427 TI - Coping with life on a portable ventilator. PMID- 3848428 TI - Respiratory home care from the DME point of view. PMID- 3848429 TI - An emphysema client: self care. PMID- 3848430 TI - Relying on the "living will" in home health care. PMID- 3848431 TI - Legislation and you. Developing a plan of strategy. PMID- 3848432 TI - Purification and characterization of an endonuclease from Xenopus laevis ovaries which accurately processes the 3' terminus of human pre-tRNA-Met(i) (3' pre tRNase). AB - We have previously reported that the primary transcript of the human tRNAMeti gene undergoes accurate processing to a mature 72-nucleotide species by activities present in the high speed supernatant of Xenopus laevis ovarian extracts (Zasloff, M., Santos, T., Romeo, P., and Rosenberg, M. (1982a) J. Biol. Chem. 257, 7857-7863). We now report the purification and characterization of the enzyme which processes the 3' terminus of the human pre-tRNAMeti species. The activity has been purified about 500-fold from a high speed supernatant of X. laevis ovarian extracts by standard methods. It appears to function as a single polypeptide with a molecular weight of about 97,400. The enzyme generates the mature 3' terminus with a single endonucleolytic cut, also yielding the intact 3' trailer. The endonuclease has a striking preference for the 5' processed pre tRNAMeti, exhibiting little or no activity in vitro on the intact primary transcript. The enzyme acts similarly with the pre-tRNAAla species of Bombyx mori, suggesting that it possesses a broad substrate range. The requirement of the 3' processing endonuclease for a processed 5' terminus suggests that eukaryotic pre-tRNA processing should follow an ordered cutting sequence in vivo with processing of the 5' leader preceding 3' end maturation. PMID- 3848433 TI - Differences in the sites of phosphorylation of the insulin receptor in vivo and in vitro. AB - Phosphorylation of the insulin receptor was studied in intact well differentiated hepatoma cells (Fao) and in a solubilized and partially purified receptor preparation obtained from these cells by affinity chromatography on wheat germ agglutinin agarose. Tryptic peptides containing the phosphorylation sites of the beta-subunit of the insulin receptor were analyzed by reverse-phase high performance liquid chromatography. Phosphoamino acid content of these peptides was determined by acid hydrolysis and high voltage electrophoresis. Separation of the phosphopeptides from unstimulated Fao cells revealed one major and two minor phosphoserine-containing peptides and a single minor phosphothreonine-containing peptide. Insulin (10(-7) M) increased the phosphorylation of the beta-subunit of the insulin receptor 3- to 4-fold in the intact Fao cell. After insulin stimulation, two phosphotyrosine-containing peptides were identified. Tyrosine phosphorylation reached a steady state within 20 s after the addition of insulin and remained nearly constant for 1 h. Under our experimental conditions, no significant change in the amount of [32P]phosphoserine or [32P]phosphothreonine associated with the beta-subunit was found during the initial response of cells to insulin. When the insulin receptor was extracted from the Fao cells and incubated in vitro with [gamma-32P]ATP and Mn2+, very little phosphorylation occurred in the absence of insulin. In this preparation, insulin rapidly stimulated autophosphorylation of the receptor on tyrosine residues only and high performance liquid chromatography analysis of the beta-subunit digested with trypsin revealed one minor and two major phosphopeptides. The elution position of the minor peptide corresponded to that of the major phosphotyrosine-containing peptide obtained from the beta-subunit of the insulin-stimulated receptor labeled in vivo. In contrast, the elution position of one of the major phosphopeptides that occurred during in vitro phosphorylation corresponded to the minor phosphotyrosine-containing peptide phosphorylated in vivo. The other major in vitro phosphotyrosine-containing peptide was not detected in vivo. Our results indicate that: tyrosine phosphorylation of the insulin receptor occurs rapidly following insulin binding to intact cells; the level of tyrosine phosphorylation remains constant for up to 1 h; the specificity of the receptor kinase or accessibility of the phosphorylation sites are different in vivo and in vitro.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3848434 TI - Evidence that the primary effect of phosphorylation of eukaryotic initiation factor 2(alpha) in rabbit reticulocyte lysate is inhibition of the release of eukaryotic initiation factor-2.GDP from 60 S ribosomal subunits. AB - The phosphorylation of eukaryotic initiation factor (eIF) 2 alpha that occurs when rabbit reticulocyte lysate is incubated in the absence of hemin or with poly(I.C) causes inhibition of polypeptide chain initiation by preventing a separate factor (termed RF) from promoting the exchange of GTP for GDP on eIF-2. When lysate was incubated in the presence of hemin and [14C] eIF-2 or [alpha 32P]GTP, we observed binding of eIF-2 and GDP or GTP to 60 S ribosomal subunits that was slightly greater than that bound to 40 S subunits and little binding to 80 S ribosomes. When incubation was in the absence of hemin or in the presence of hemin plus 0.1 microgram/ml poly(I.C), eIF-2 and GDP binding to 60 S subunits was increased 1.5- to 2-fold, that bound to 80 S ribosomes was almost as great as that bound to 60 S subunits, and that bound to 40 S subunits was unchanged. Our data indicate that about 40% of the eIF-2 that becomes bound to 60 S subunits and 80 S ribosomes in the absence of hemin or with poly(I.C) is eIF-2(alpha-P) and suggest that the eIF-2 and GDP bound is probably in the form of a binary complex. The accumulation of eIF-2.GDP on 60 S subunits occurs before binding of Met-tRNAf to 40 S subunits becomes reduced and before protein synthesis becomes inhibited. The rate of turnover of GDP (presumably eIF-2.GDP) on 60 S subunits and 80 S ribosomes in the absence of hemin is reduced to less than 10% the control rate, because the dissociation of eIF-2.GDP is inhibited. Additional RF increases the turnover of eIF-2.GDP on 60 S subunits and 80 S ribosomes to near the control rate by promoting dissociation of eIF-2.GDP but not eIF-2(alpha-P).GDP. Our findings suggest that eIF-2.GTP binding to and eIF-2.GDP release from 60 S subunits may normally occur and serve to promote subunit joining. The phosphorylation of eIF-2 alpha inhibits polypeptide chain initiation by preventing dissociation of eIF-2.GDP from either free 60 S subunits (thus inhibiting subunit joining directly) or the 60 S subunit component of an 80 S initiation complex (thereby blocking elongation and resulting in the dissociation of the 80 S complex). PMID- 3848435 TI - Covalent modification of phenylalanyl-tRNA synthetase with phenylalanine during the amino acid activation reaction catalyzed by the enzyme. AB - Yeast phenylalanyl-tRNA synthetase (PRS) is shown to undergo autoaminoacylation with phenylalanine under in vitro amino acid activation conditions. Phenylalanyl adenylate enzyme complex yields a covalent phenylalanyl isopeptide exclusively with the beta subunit of the alpha 2 beta 2 enzyme. Contrary to previously reported cases of autoaminoacylation of aspartyl-tRNA synthetase and tryptophanyl tRNA synthetase, the autoaminoacylation of PRS occurs under a specific set of conditions and results in the identification of only one labeled tryptic peptide on two types of high pressure liquid chromatography columns. The ability of PRS to undergo this covalent modification directly correlates with its ability to catalyze the synthesis of diadenosine 5',5"'-P1,P4-tetraphosphate from enzyme bound phenylalanyl adenylate. Both reactions require the presence of low levels of zinc or cadmium and are inhibited by tRNAPhe or by low levels of low molecular weight thiols. Since diadenosine 5',5"'-P1,P4-tetraphosphate synthesis is known to be catalyzed in vivo in response to oxidation stress, it is also likely that the autoaminoacylation of phenylalanyl-tRNA synthetase may occur in vivo under a similar set of conditions. These reactions are thus not simply the result of accumulation of phenylalanyl adenylate and probably reflect conformational changes in the protein which are brought about by its interaction with zinc or cadmium. PMID- 3848437 TI - The risk of hepatitis B in ET nurses. PMID- 3848436 TI - Fast axonal transport of foreign synaptic vesicles in squid axoplasm. AB - Translocation of intracellular organelles requires interaction with the cellular cytoskeleton, but the membrane and cytoskeletal proteins involved in movement are unknown. Here we show that highly purified synaptic vesicles from electric fish added to extruded squid axoplasm can show ATP-dependent movement. The movement is indistinguishable from that of endogenous vesicles and has a slight preference for the orthograde direction. In the presence of a nonhydrolyzable ATP analog, the synaptic vesicles bind to axoplasmic fibers but do not move. Elastase treatment of vesicles inhibits both binding and movement. We conclude that a protein component on the surface of cholinergic synaptic vesicles from electric fish is conserved during evolution and so can be recognized by the organelle translocating machinery of the squid axon, resulting in ATP-dependent movement. Synaptic vesicles apparently retain the capacity for fast axonal transport, even after they reach their intracellular destination. PMID- 3848438 TI - Evaluation of a transparent dressing in the treatment of stasis ulcers of the lower limb. PMID- 3848439 TI - Meeting the needs of patients undergoing ostomy surgery. PMID- 3848440 TI - Urinary undiversion. PMID- 3848443 TI - The hepatitis B vaccine. PMID- 3848441 TI - Biliary atresia: nursing diagnoses and management. PMID- 3848442 TI - Expanding your practice. PMID- 3848444 TI - Growth of a department. PMID- 3848445 TI - The Betty Neuman Systems Model in nursing practice: a case study approach. AB - The value of models of nursing to provide direction for nursing practice, education and research is becoming increasingly evident in the literature. Nursing is developing a heightened awareness of the importance of models as vehicles to professional accountability. By delineating the boundaries of nursing, they serve as a framework for the development of nursing knowledge. This paper describes the use of the Betty Neuman Systems Model in practice using a case study approach. The selection of the model for practice reflects the congruency between the practitioner's personal values and assumptions and those of the model, the major elements of which are highlighted in the first section of the paper. The second section explores the model in practice via a nursing situation in which the client is recovering at home following hospitalization and treatment for a myocardial infarction. PMID- 3848446 TI - Theory of nursing as curriculum content. AB - This article presents an introduction to theories of nursing, and a discussion of the structure of the discipline, its relationship to the nursing curriculum, and nursing theories as curriculum content. Some results of a content analysis of curricula for Australian post-basic clinical nursing courses are presented. Such curricula do not appear to afford much coverage of the nursing process and theories of nursing. PMID- 3848447 TI - A study to compare two models of community psychiatric nursing care delivery. AB - This study analyses data collected by the community psychiatric nursing team in the Bloomsbury Health Authority. After the 1982 National Health Service reorganization one large CPN team was created from two smaller ones each operating a separate mode of care delivery. Four CPNs were based at a day hospital and five CPNs worked from primary health care bases. Regular statistics collected by all the nurses were used to examine two hypotheses. First, there is a type of client seen by a CPN who varies according to the main base from which the nurse operates. Second, that there were differences in individual CPN 'caseload activity' that are determined by main work-setting. The results indicated that the characteristics of the two client-referral samples were indeed different using various measures of social deprivation and isolation. Substantial variations in 'caseload activity' between the two teams were also found, the largest difference being the number of hours spent in clinical activity, face to face with the client. Various implications of these findings for the overall planning and management of the CPN team are discussed. The overall conclusion reached is that, as Mangen & Griffith have suggested, the planning of CPN services requires the systematic collection of evaluative data on which to base future policies. PMID- 3848448 TI - Designing nursing research: the qualitative-quantitative debate. AB - Nursing research has not evolved with immunity from the qualitative-quantitative debate which has surrounded the behavioural and social sciences. The outcome of this debate should be better nursing science since researchers are forced to face and address the controversial issues. Attaining this goal requires researchers to debate the issues with a knowledge of epistemology and methodology and not blind devotion to the tradition of the hard sciences. This paper addresses the issues of epistemology, methodology, and ethics for two prototypes of the qualitative quantitative continuum. Grounded theory explains the issues of qualitative research: the search for meaning, the inclusion of environmental factors, the depth of data, and the treatment of participants as subjects. The true experiment, the epitomy of the quantitative approach, seeks to identify existing truths by isolating the significant variables and controlling for contaminating factors. Based on these arguments, recommendations are made for nursing research which rely on both approaches. PMID- 3848449 TI - An examination of research priorities in nurse education. AB - This paper outlines research priorities in general student nurse training, which include looking at curriculum content and methods of teaching/learning, and the linking of theory and practice--particularly the inclusion of research findings. The student nurse's ability and counselling needs are assessed. Finally, the need for research into the teacher's training and role is outlined. PMID- 3848450 TI - Student unrest: a challenge for nurse educators. AB - Nursing students, like their college counterparts, are beginning to revolt against hierarchical authority and to claim a more active part in their educational planning. Nurse educators can no longer assume that their students will never revolt; they must face up to the challenge of developing strategies for proper management of student unrest. The authors propose some ways to deal with the complex issue of student unrest. These suggestions are made with emphasis on faculty-student relationship and the curriculum. Improved faculty student relationships, proper utilization of student peer influence and student involvement in curriculum planning are some of the strategies proposed in this paper. PMID- 3848451 TI - The role of communication in nursing--perceptual variations in student/teacher responses in Northern Ireland. AB - The value of sound communication/interpersonal skills in nursing has been clearly demonstrated over recent years. However, precise definition of what constitutes such skills, and how these skills should be developed, remains comparatively ill defined. This lack of positive definition in turn presents considerable difficulties for nurse training in communication skills, where both the basic purpose and value of such training may be perceived quite differently by teachers and by student nurses. Based on a field study in Northern Ireland, this paper not only highlights some of the existing inadequacies of current nurse training in communication skills, but also examines some of the disturbing wider educational implications of this problem. PMID- 3848452 TI - The attitudes of nurse tutor students to behavioural objectives: results and discussion. AB - This small-scale empirical study provides evidence of the attitudes of a group of nurse tutor students to behavioural objectives. The questionnaire items used ranged from questions about behaviourism and the use of behavioural objectives in teaching, to a question on whether the participants would use behavioural objectives in their teaching once they had finished their course. It emerged that while there was not an uncritical acceptance of behavioural objectives, they were seen as having a place in the process of teaching and learning nursing. PMID- 3848453 TI - Janforum. Health care and nursing in the People's Republic of China. PMID- 3848454 TI - In search of agents for self-care. PMID- 3848455 TI - How well do your clients cope with hearing loss? PMID- 3848457 TI - Assessing needs for elders' networks. PMID- 3848456 TI - Reminiscing in group therapy for self-worth. PMID- 3848458 TI - Treating GI upset in older adults. PMID- 3848459 TI - Do uniform colors keep patients awake? PMID- 3848460 TI - Biochemical studies on a novel vanadate- and molybdate-sensitive acid phosphatase from human epidermis. AB - A novel vanadate- and molybdate-sensitive human skin epidermal acid phosphatase was purified and characterized. The enzyme was extracted from epidermal sheets with a 0.1% Triton X-100 solution buffered at pH 7.0. The purification procedure consisted of molecular permeation chromatography on Sephadex G-200 followed by chromatography on hydroxylapatite using an ammonium sulfate gradient. The molecular weight of the enzyme was 82,000 and the isoelectric point was at pH 5.6. At the optimum pH (5.1) the enzyme hydrolyzed most rapidly 1-naphthyl phosphate (Km = 0.28 mM) and 4-nitrophenyl phosphate (Km = 0.28 mM). In general, the best substrates had an aromatic leaving group. Fluoride (Ki = 39 microM; noncompetitive) and phosphate (competitive) inhibited by binding to different binding sites of the enzyme. The most potent inhibitors were vanadate (Ki = 1.9 X 10(-6)M), tungstate (Ki = 1.4 X 10(-7)M), and molybdate (Ki = 2.0 X 10(-9)M). Chemical modification and kinetic experiments suggested that the activity of the enzyme is based on imidazole, tyrosyl, and carboxyl groups. Benzoyl peroxide was a relatively potent inhibitor (Ki = 5.0 X 10(-5)M; noncompetitive). This enzyme resembled the prostatic acid phosphatase with regard to substrate specificity, inhibition characteristics, and functional groups. PMID- 3848461 TI - [The influence of various molecules on the occurrence of the human sperm acrosome reaction]. AB - The acrosome reaction is essential for fertilization, but the mechanism of the acrosome reaction of human spermatozoa is not clear at the present time. We studied the mechanism to analyze the cause of unexplained infertility, the appropriate timing of insemination, and the environment of spermatozoa prior to fertilization. For this study, we examined the effects of Ca++, Mg++, Kallikrein, Phospholipase A2, p-bromophenacyl bromide (Phospholipase A2 specific inhibitor), Lysophosphatidyl choline, Arachidonic acid, and Glyceryl monooleate using in vitro penetration assay employing zona- free hamster eggs. Results obtained were as follows. When human spermatozoa were incubated in mBWW with Ca++ or (and) Mg++ free medium, the acrosome reaction was inhibited. When human spermatozoa were incubated in mBWW with Kallikrein (1.0-4.0 KU ml), the acrosome reaction was promoted. When Phospholipase A2 was used at concentrations of 0.2 and 2.0 unit/ml, penetration rates showed the same tendency as in the control. But when p bromophenacyl bromide was tested at concentrations of 1 X 10(-5) - 1 X 10(-3)M, penetration rates were inhibited when compared with the control. When human spermatozoa were incubated in medium containing Lysophosphatidyl choline (50 micrograms/ml), Arachidonic acid (5-50 micrograms/ml), and Glyceryl monoleate (300-400 micrograms/ml), the acrosome reaction was accelerated. PMID- 3848462 TI - Conceptions of community health nurses regarding low-income Black, Mexican American, and White families: Part 2. PMID- 3848463 TI - Combining the clinical and consultative roles in a community day care center. PMID- 3848465 TI - Helping children of aged parents achieve filial maturity. PMID- 3848464 TI - Profiles of the consumer and nonconsumer of pediatric nurse practitioner services: New Haven, Connecticut. PMID- 3848466 TI - Conceptions of community health nurses regarding low-income Black, Mexican American, and White families: Part 1. PMID- 3848467 TI - Nursing consortium approach to increase research in service settings. AB - Nursing administrators urgently need objective, tested information on which to base crucial decisions regarding quality and cost in all areas of nursing service. Such information can be obtained only through research, but the scarcity of credentialed nurse-researchers limits the possibility of meeting this need. As an alternative approach, a consortium of nine nursing service agencies was established to prepare nurses to study their concerns. This article describes the consortium's background and function. PMID- 3848468 TI - The case for mentor moderation. PMID- 3848469 TI - Why health-care teams don't change: chronicity and collusion. AB - Organizational chronicity exists in many health-care settings. This syndrome organizes the agency's approach to problems, dampens enthusiasm about the possibility of change, and fosters a climate in which change behaviors are undermined and sabotaged. The authors identify collusion, characteristics of the health-care team, errors of the internal training staff, and consultant errors as four significant contributors to organizational chronicity, and offer strategies for changing settings in which chronicity is the norm. PMID- 3848470 TI - AIDS in perspective. PMID- 3848471 TI - Continuing education. Part III. Acid-base balance. PMID- 3848472 TI - The solace of a dream. PMID- 3848473 TI - Peritoneal Pete... PMID- 3848474 TI - Four bottle routine. PMID- 3848475 TI - Electrophysiology of the cardiac cell. PMID- 3848476 TI - Aluminum bone disease. (A case study). PMID- 3848477 TI - Megatrends ... Impact on nephrology nursing. PMID- 3848478 TI - Self care framework: a guide for clinical application. PMID- 3848480 TI - Why the big deal over patient teaching? PMID- 3848481 TI - Pain in children with cancer: an assessment. PMID- 3848479 TI - Nursing intervention based on the health belief model and compliance in patients on chronic dialysis. PMID- 3848482 TI - Legislative issues (giving testimony to a legislative committee). PMID- 3848483 TI - Bone marrow aspirations employing 20-gauge spinal needles vs. wide gauge steel needles. PMID- 3848484 TI - A overview of descriptive research. PMID- 3848485 TI - Dexamethasone's new use in cancer treatment. PMID- 3848486 TI - Patient violence. Report of 200 incidents. AB - Studies of assaultive behavior in hospital settings are increasing. Results are often contradictory. These variances are dependent upon the type of hospital, the specific setting, and the disciplines involved in the reporting process. Open recognition that violent incidents occur, and the substitution of fact finding for finger pointing, are the first steps toward prevention and management. PMID- 3848487 TI - Restraint and seclusion. A standard and standard care plan. PMID- 3848488 TI - Drug abuse and the elderly. PMID- 3848489 TI - Helping cancer patients cope. PMID- 3848490 TI - How nurses react to patient assault. PMID- 3848491 TI - Substituted 2-pyrones, 2-pyridones, and other congeners of elasnin as potential agents for the treatment of chronic obstructive lung diseases. AB - Several congeners of elasnin (I) have been synthesized and shown to inhibit human leukocyte elastase (HLE). The C-3 alkyl substituted 2-pyrones 11 and 12 were found to be the most effective inhibitors of the enzyme. These compounds are highly specific in their inhibitory activity. PMID- 3848492 TI - [Extracorporeal lung assist (ECLA) by intermittent veno-venous bypass for newborn respiratory failure]. PMID- 3848493 TI - [Utilization of the nursing report in nursing care]. PMID- 3848494 TI - [Reduction in time required in preparation of nursing reports: improvement in the method of recording on the Kardex]. PMID- 3848495 TI - [Preparation of the standard format for the nursing report and associated future problems]. PMID- 3848496 TI - [Re-evaluation of nursing reports: views held by the nurses of our hospital. A survey by questionnaires and tape recording]. PMID- 3848497 TI - [Innovation in preparation of nursing reports at St. Jude Hospital: for maintenance of continuity of nursing care]. PMID- 3848498 TI - [Bedside nursing. Assistance toward independent elimination action by an aged hemiplegic patient]. PMID- 3848499 TI - [Bedside nursing. A thought on psychiatric nursing through interactions with a schizophrenic patient with a negative and aggressive attitude]. PMID- 3848500 TI - [The right to be wrong]. PMID- 3848501 TI - [Thoughts of a clinical practitioner through interactions with a patient with terminal maxillary cancer]. PMID- 3848502 TI - [Learning experience through interactions with a young boy requiring psychological support]. PMID- 3848503 TI - [Home nursing activities by a membership system (life care system)]. PMID- 3848504 TI - [Report from the hospice. 6. Care of dying patients. Interactions with family members]. PMID- 3848505 TI - [Monologue by a nursing director: my encounter with tea ceremony]. PMID- 3848506 TI - [Clinical phase of dementia. 2. Symptoms of dementia (1)]. PMID- 3848508 TI - [Counseling of patients. 5. Steps to be followed after the establishment of the goal. Counseling methods (2)]. PMID- 3848507 TI - [Changing medical care: toward the 21st century. 3. Primary health care]. PMID- 3848509 TI - [Profile of a nurse. Ms Michi Iwamoto, a clinical nurse who completed a 4-year study in law]. PMID- 3848510 TI - [Diary of a cancer patient. A positive attitude in spite of a loss of the voice. The first experience in oral feeding after surgery]. PMID- 3848511 TI - [Public health care in Indonesia. Kader, volunteers for improvement of local health care]. PMID- 3848512 TI - [Primary nursing: economics of primary nursing]. PMID- 3848513 TI - [Re-evaluation of daily care. Protection of patients from the harmful effects of clinical tests]. PMID- 3848514 TI - [Urinary rehabilitation of patients with neurogenic bladder]. PMID- 3848515 TI - [Nursing of patients with cervical and other spinal cord injuries for independent urination actions: description of the nursing processes]. PMID- 3848516 TI - [Preparation of patients with urination dysfunctions for hospital discharge]. PMID- 3848517 TI - [Independent urination actions by apoplexy patients]. PMID- 3848519 TI - [On nursing and observing patients (1). Discussion by two authors]. PMID- 3848518 TI - [Nursing of rheumatoid patients with difficulties in urination actions]. PMID- 3848520 TI - [Report on medical and nursing activities in the arid area of Ethiopia]. PMID- 3848521 TI - [Report on home care services. 17. Regional care of patients with refractory diseases being cared for at home. Close human relations to fill the gap between medical care and welfare service]. PMID- 3848522 TI - [Report from the hospice. 7. Care of dying patients: informing the patients about the nature of their illness]. PMID- 3848523 TI - [Clinical description of pain. 15. Use of narcotic analgesics (II). Oral administration--Brompton cocktail]. PMID- 3848524 TI - [Clinical description of dementia. 3. Symptoms of dementia (2)]. PMID- 3848525 TI - [Medicine in a changing society: toward the 21st century. 4. Life-long education]. PMID- 3848526 TI - [Counseling of patients. Approaches varied according to client types. Counseling methods. (3)]. PMID- 3848527 TI - [Profile of a nurse. Ms. Hisako Minowa who has worked as a psychiatric counsellor in industry for the past 20 years]. PMID- 3848528 TI - [Record of a cancer patient: a positive attitude toward recovery in spite of a loss of speech. Return of suffering]. PMID- 3848529 TI - [Report by a public health nurse working in Indonesia. 7. A women's organization and its activities]. PMID- 3848531 TI - [Bioenergetics]. PMID- 3848530 TI - [A monologue by a nursing director. Extents of involvement with hobbies]. PMID- 3848532 TI - [Problems concerning total hysterectomy]. PMID- 3848533 TI - [Management of daily activities and prognosis of patients following hysterectomy]. PMID- 3848534 TI - [Easing of pain and assistance in urination by patients following total hysterectomy]. PMID- 3848535 TI - [The effects of the methods of total hysterectomy in the ensuing years]. PMID- 3848536 TI - [Evaluation of the methods of patient education concerning their sexual activities following total hysterectomy]. PMID- 3848537 TI - [Pre and postoperative education of patients undergoing hysterectomy]. PMID- 3848538 TI - [Nursing of a patient with ovarian cancer associated with ascites and hydrothorax]. PMID- 3848539 TI - [Nursing of a young patient with malignant ovarian cancer undergoing chemotherapy]. PMID- 3848540 TI - [Nursing of a patient with cervical cancer--the effect of total hysterectomy on the patient's emotion and interactions with the nursing staff]. PMID- 3848541 TI - [Nursing of a patient with uterine cancer undergoing radiotherapy]. PMID- 3848542 TI - [Nursing of a patient in the terminal stage of ovarian cancer--an observation through nursing of the patient suffering constant vomiting and nausea]. PMID- 3848543 TI - [Practice of the ICU care of patients undergoing valve replacement]. PMID- 3848544 TI - [ICU nursing following replacement with artificial valves]. PMID- 3848545 TI - [Patients' use of the interphone connected to the nursing station: the nature of the calls and trends in the use]. PMID- 3848546 TI - [Ocular symptoms of solvent poisoning]. PMID- 3848547 TI - [Pseudogout]. PMID- 3848548 TI - [Neuroblastoma and mass examination]. PMID- 3848549 TI - [Laser therapy of cervical cancer]. PMID- 3848550 TI - [Cystostomy and urostomy]. PMID- 3848551 TI - [The Second European Symposium on Education of Diabetic Patients. Goals in patient education--an answer to be found on the drawing board]. PMID- 3848552 TI - [Health evaluation--a report on the Hawaiian Nursing Seminar]. PMID- 3848553 TI - [Cancer of the female genital organs, with special reference to early diagnosis]. PMID- 3848554 TI - [Surgical treatment of ovarian and uterine cancer and postoperative management]. PMID- 3848556 TI - [On nursing associations and nursing research: a discussion]. PMID- 3848555 TI - [Motivation in clinical nursing training: significance of ideas of instructors]. PMID- 3848557 TI - [Characteristics and development of communication at the ego state in transactional analysis: understanding of patients and nursing in clinical case studies]. PMID- 3848558 TI - [Evaluation of methods in short-term clinical training]. PMID- 3848559 TI - [Teaching to utilize the knowledge in clinical training: construction of a model in instruction prior to clinical training]. PMID- 3848560 TI - [A conference fully participated by students: an observation from basic clinical training]. PMID- 3848561 TI - [The initial clinical training and manners in speech]. PMID- 3848562 TI - [Educational technology. Training in internal medicine (2). Technology in routine tests]. PMID- 3848563 TI - [On nursing education. 36. Old and yet new basic nursing technology]. PMID- 3848564 TI - [Methodology and problems in nursing education: for solutions of problems at the educational scene. 12. Conclusion and supplement]. PMID- 3848566 TI - [Learning in clinical training in psychiatric nursing--changes of students' attitudes noted in questionnaires]. PMID- 3848567 TI - [Clinical training in psychiatric nursing--a 2-week experience at the National Higo Sanatorium]. PMID- 3848565 TI - [Importance of individual teaching in comprehensive clinical training]. PMID- 3848568 TI - [Effects of leadership training in nursing education]. PMID- 3848569 TI - [Basis of the study of electrocardiography]. PMID- 3848572 TI - [Students' interest on the subjects of sex and diseases--a survey on women's magazines]. PMID- 3848570 TI - [On nursing education. 37. Items necessary in acquiring nursing technology]. PMID- 3848571 TI - [Education and the study of education]. PMID- 3848574 TI - [Open-mindedness in interpreting the report: comments on the model meeting with local inhabitants]. PMID- 3848573 TI - [The starting point in public health activities. Understanding the problems and finding solutions through discussion. A model discussion]. PMID- 3848575 TI - [Public health nurses' intention and thinking process of the participants: a discussion on the model meeting with citizens]. PMID- 3848576 TI - [Understanding the local public health problems: structural comprehension of the problems through meetings with citizens]. PMID- 3848577 TI - [Comprehension of health problems by citizens for more active participation toward health improvement--an effort in education of diabetic patients at a public health clinic]. PMID- 3848579 TI - [Proposal of the "third natural history" for the comprehensive approach to public health services: understanding the multi-structural autonomy of the learning organization]. PMID- 3848578 TI - [A new role of regional public health nurses approaching the 21st century]. PMID- 3848580 TI - [Public health activities: day care of the aged local residents]. PMID- 3848581 TI - Social policy and cost of care of the aged. PMID- 3848582 TI - [Prospect of welfare programs for the aged in Korea]. PMID- 3848583 TI - [Health problems of the aged]. PMID- 3848584 TI - [Nursing care of the aged]. PMID- 3848585 TI - [Curricular implications for undergraduate nursing education]. PMID- 3848586 TI - [Foley catheterization and infection]. PMID- 3848587 TI - [A study of hospital nurses' job satisfaction and acceptance of inservice education]. PMID- 3848588 TI - [A study on the relationship of home background and personality traits of nursing students]. PMID- 3848589 TI - [Trends and perspectives in gerontology]. PMID- 3848590 TI - [Literature review on the menopause syndrome]. PMID- 3848591 TI - [Problems of the aged in Korea]. PMID- 3848592 TI - Legal issues of nursing practice. PMID- 3848593 TI - Maintaining health in our older population. PMID- 3848594 TI - Computers and communication. PMID- 3848596 TI - [Nursing process: nursing of patients with stomach cancer. Diagnostic and therapeutic processes for patients with stomach cancer]. PMID- 3848595 TI - [Nursing process: nursing of patients with stomach cancer. Physiopathology of stomach cancer, life activities and prognosis of patients]. PMID- 3848597 TI - [Nursing process: nursing of patients with stomach cancer. Keypoints in comprehensive understanding of patients with stomach cancer]. PMID- 3848598 TI - [Nursing process: nursing of patients with stomach cancer. Nursing plans for patients with stomach cancer]. PMID- 3848599 TI - [Nursing process: nursing of a patient with stomach cancer. Discovery of stomach cancer in an early stage at a mass screening and pre and post-operative nursing]. PMID- 3848600 TI - [Nursing process: nursing of patients with stomach cancer. Discussion: management of patients' anxiety and patient education at discharge]. PMID- 3848601 TI - [Nursing of an alcoholic patient and health education using a personalized booklet]. PMID- 3848602 TI - [Nursing of a diabetic patient with special emphasis on dietary training]. PMID- 3848603 TI - [Learning through contact with children--an experience with medication training of a child with juvenile rheumatoid arthritis]. PMID- 3848604 TI - [Conference: learning through clinical training--nursing with understanding of the patient]. PMID- 3848605 TI - [Test yourself. Nursing of a patient with amyotrophic lateral sclerosis]. PMID- 3848606 TI - [Case report and its evaluation: nursing of a paraplegic patient with poor communication with nursing personnel--with special emphasis on the care of decubitus ulcer]. PMID- 3848607 TI - [Patients' use of the buzzer calling a nurse]. PMID- 3848608 TI - [Responses to the buzzer calling a nurse during the busy time period]. PMID- 3848609 TI - [A reduction in the use of the buzzer by patients with improvement of nursing care]. PMID- 3848610 TI - [Problems with patients who do not use the buzzer to call nurses--a reflection on one's own experience as a patient]. PMID- 3848611 TI - Selective noradrenaline depletion markedly alters stress responses in rats. AB - Rats were given FLA-63, followed by R04-1284 0.5 h later to relatively selectively deplete brain NA. After 8 h, some animals were examined for regional brain NA and MHPG-SO4, while some were subjected to 3 h of cold-restraint stress and then examined. All brain regions examined showed significant NA and MHPG reduction. Specific NA depletion markedly exacerbated restraint ulcer formation and plasma corticosterone levels. NA depletion without restraint stress did not induce ulcers or elevate corticosterone. Intact brain NA activity appears to be essential for coping with stress. PMID- 3848612 TI - The use of power: a positive force for nurses! PMID- 3848613 TI - Nurses assist Medical Passport implementation. PMID- 3848614 TI - [Dystonia musculorum deformans]. PMID- 3848615 TI - [Syringomyelia]. PMID- 3848616 TI - [Physiotherapy of obliterating arterial lesions of the lower extremities]. PMID- 3848617 TI - [Use of physiotherapy in dentistry]. PMID- 3848618 TI - [Role of the nurse in the work of the periodontics office]. PMID- 3848619 TI - [Work safety for the x-ray laboratory assistant]. PMID- 3848620 TI - [Diagnosis and treatment of proctological diseases in the polyclinic]. PMID- 3848621 TI - [Work of the nurse in the ENT office]. PMID- 3848622 TI - [Role of the nurse in intensifying the therapeutic and diagnostic process in hospitals]. PMID- 3848623 TI - [Protective housing for the medical injection syringe]. PMID- 3848624 TI - [Emotional stress in ophthalmic surgery]. PMID- 3848625 TI - [Presterilization cleaning of articles for medical use]. PMID- 3848626 TI - [Standardization of the quality of x-rays]. PMID- 3848627 TI - [Use of the special form for orders to the clinical biochemical laboratory]. PMID- 3848628 TI - [Toxoplasmosis]. PMID- 3848629 TI - [Intrauterine contraception]. PMID- 3848630 TI - [The health bulletin]. PMID- 3848632 TI - [Acupuncture]. PMID- 3848633 TI - [Treatment of fractures in children]. PMID- 3848631 TI - [The ethics of interrelationships in medical collectives]. PMID- 3848634 TI - [Perthes' disease]. PMID- 3848635 TI - [Benign skeletal tumors in children]. PMID- 3848636 TI - [Congenital talipes]. PMID- 3848637 TI - [Therapeutic gymnastics and massage for children with congenital hip dislocation]. PMID- 3848638 TI - [Therapeutic care for children with diseases of the locomotor system]. PMID- 3848640 TI - [Massage in shoulder dislocations]. PMID- 3848639 TI - [Orthopedic treatment of children with chronic joint diseases]. PMID- 3848641 TI - [Microsurgery in traumatology and orthopedics]. PMID- 3848642 TI - [Therapeutic prosthetics]. PMID- 3848643 TI - [Combined treatment of joint contracture]. PMID- 3848644 TI - [Functional treatment of patients suffering from osteochondrosis and spondylosis deformans]. PMID- 3848645 TI - [Blood service for traumatologists and orthopedists]. PMID- 3848646 TI - [Orthopedics department for adults--searches, findings, decisions...]. PMID- 3848648 TI - [Modification of a bandage dressing for the head]. PMID- 3848647 TI - [Spinal osteochondrosis]. PMID- 3848649 TI - [Our experience with centralizing the management of nurses' work in dressing wards]. PMID- 3848650 TI - Nutrition in the first year. PMID- 3848651 TI - Does infant crying affect concentration? PMID- 3848652 TI - Fighting rubella. PMID- 3848653 TI - Diabetes in pregnancy. PMID- 3848654 TI - Some faults on feeding. PMID- 3848656 TI - Breast feeding--a new understanding. Mabel Liddiard Memorial Lecture-Edinburgh 1984. PMID- 3848655 TI - When your patients ask about glaucoma. PMID- 3848657 TI - Breast feeding--a life-saver in the Third World. PMID- 3848658 TI - Women at work. PMID- 3848660 TI - Hepatitis B: what you don't know can hurt you. PMID- 3848659 TI - Fetal response to music. PMID- 3848661 TI - C3 nephritic factor protects bound C3bBb from cleavage by factor I and human erythrocytes. AB - C3 nephritic factor is an autoantibody to the alternative-pathway C3 convertase (C3bBb) which increases the half-life of the convertase both in the presence and absence of serum regulatory proteins. Human erythrocytes contain membrane proteins which also can regulate C3bBb. One of these proteins, the C3b/C4b receptor (CR1), plays an important role in the processing of soluble immune complexes. C3b which is fixed to immune complexes binds to CR1 and is cleaved by factor I to C3c and C3dg. We have tested the effectiveness of the nephritic factor in protecting bound C3b from cleavage by factor I and human erythrocytes. Sheep erythrocyte intermediates EAC1423b were prepared using 125I-labeled C3 and incubated with factors B and D in the presence and absence of nephritic factor. Breakdown of C3b was measured by release of 125I-C3c following incubation with human erythrocytes and factor I. Purified IgG from two patients with nephritic factor prevented C3c release in a dose-dependent manner. Normal human IgG was ineffective as was nephritic factor in the absence of factor B. Factor P also inhibited the release of C3c in the presence of factor B with equivalent activity at approx. 20-fold higher concns than nephritic factor. These results indicate that nephritic factor can impair human erythrocyte dependent degradation of C3b in alternative-pathway-activating immune complexes. PMID- 3848662 TI - In preparation of Korner. PMID- 3848664 TI - View from the other side. PMID- 3848663 TI - How we feel. PMID- 3848665 TI - Fracture of the tibia. PMID- 3848666 TI - An emergency infusion set. PMID- 3848667 TI - A marriage made in heaven? PMID- 3848668 TI - Corporate restructuring of nonprofit, tax-exempt hospitals. PMID- 3848669 TI - Quality with economy: doing the right things for less. PMID- 3848670 TI - Providing incentives while reducing costs: an employee suggestion plan. PMID- 3848671 TI - Implementing and monitoring variable staffing. PMID- 3848672 TI - Basics in evaluating computer software. PMID- 3848673 TI - Critical mass: integration of organizational theory and economics. PMID- 3848675 TI - Nurse consultants association. PMID- 3848674 TI - Will a healthy dose of competition cure the health-care system's ills? PMID- 3848676 TI - The cost of nursing's negative image. PMID- 3848677 TI - Can you learn to be a leader? PMID- 3848678 TI - The five steps to successful networking. PMID- 3848679 TI - Taking off. A nurse's guide to studying abroad. PMID- 3848680 TI - Turn your ideas into profit. PMID- 3848681 TI - Nurses need much more sense than in the past. PMID- 3848683 TI - Run the road to wellness! PMID- 3848684 TI - Full backing for exhaustive research. ICN supports regulation document. PMID- 3848682 TI - Build business sense. PMID- 3848685 TI - Increasing demand from profession to know about economic issues. PMID- 3848687 TI - Unique presentation of work by British nurses on in vitro fertilisation. PMID- 3848686 TI - How nursing must respond to the individual needs of the society which it serves. PMID- 3848689 TI - College welcomes drug abuse report. PMID- 3848688 TI - College protests over advert for general manager. PMID- 3848690 TI - Royal College of Nursing. A fair crack. PMID- 3848691 TI - Discussing issue of cost of drugs for the long term mentally ill. PMID- 3848692 TI - Theory and practice. PMID- 3848694 TI - Differences between generalists and specialist nurses. PMID- 3848693 TI - Royal College of Nursing. Leading Role. Uniform approach. PMID- 3848695 TI - The SEN--between the devil and the deep blue sea? PMID- 3848696 TI - Royal College of Nursing. A side issue; just pensions. PMID- 3848697 TI - More innovative practitioners are needed now. PMID- 3848698 TI - Needs of sick children. PMID- 3848699 TI - Paediatric nurses set standard of care received by children in hospitals. PMID- 3848700 TI - Royal College of Nursing. A future for ENs; consumer role. PMID- 3848701 TI - Clinical budgeting. PMID- 3848702 TI - Individually and collectively we need to be clear what nursing is. PMID- 3848703 TI - Royal College of Nursing. Rates reduction. PMID- 3848704 TI - An epitaph for the clinical teacher. PMID- 3848705 TI - Lessons to be learnt from Israel's example. PMID- 3848706 TI - Nursing's legislative agenda, round one. PMID- 3848707 TI - Video-teleconferencing by nurses--for nurses. PMID- 3848708 TI - Health versus illness nurses can chart the course for the future. PMID- 3848709 TI - The business of nursing: development of a private practice. PMID- 3848711 TI - Nursing perspectives in health care technology. PMID- 3848710 TI - The essence of nursing in high technology. PMID- 3848712 TI - Nursing management of pulmonary health care services within a community hospital. PMID- 3848713 TI - Critically ill children: the importance of touch in a high-technology environment. PMID- 3848715 TI - Hyperbaric oxygen therapy: high pressure nursing. PMID- 3848714 TI - Withholding treatment from severely handicapped newborns: ethical-legal issues. PMID- 3848716 TI - High-touch/high-technology computer applications in nursing. PMID- 3848717 TI - An exploration of the relationship between nurses' empathy and technology. PMID- 3848719 TI - Books for nursing administrators. PMID- 3848718 TI - Motivational orientation toward learning after graduation. PMID- 3848720 TI - Mentor matching. PMID- 3848721 TI - Locating and selecting clinical agencies. PMID- 3848722 TI - Scholarship: what is the evidence? PMID- 3848723 TI - Item analysis for teacher-made tests. PMID- 3848724 TI - A baccalaureate degree program in nursing for adult students. PMID- 3848725 TI - Evaluating a nurse-managed center. PMID- 3848726 TI - Responding to crisis. PMID- 3848727 TI - Teaching for clinical competence. PMID- 3848728 TI - Partial hand amputation. PMID- 3848729 TI - Nurse-manager...try that title on for size. PMID- 3848730 TI - Documenting your postop assessment findings: a new form you can use. PMID- 3848731 TI - More than a touch: communicating with a blind and deaf patient. PMID- 3848732 TI - Warning: giving telephone advice is hazardous to your professional health. PMID- 3848733 TI - Update on pulmonary artery catheterization. PMID- 3848735 TI - Truly caring for the patient who's an alcoholic. PMID- 3848734 TI - Cerebral depressants. Their effects and safe administration. PMID- 3848736 TI - Professional growth. Looking for the key to problem employees? Ask them. PMID- 3848737 TI - Victim. PMID- 3848738 TI - A lesson in compassion. PMID- 3848739 TI - Seeing your patient through pancuronium therapy. PMID- 3848740 TI - Detecting acute abdominal distension. What to look for, what to do. PMID- 3848741 TI - The person behind the disease. PMID- 3848742 TI - Assessing C.V.P. PMID- 3848743 TI - Some straight talk about telling it like it is. PMID- 3848744 TI - The saga of the older student. PMID- 3848745 TI - Get ready. The new antiarrhythmics are coming. PMID- 3848746 TI - How safe is the air-bubble technique for I.M. injections? Not very, say these experts. PMID- 3848747 TI - The patient with multiple sclerosis. PMID- 3848748 TI - Fight unions, not unity. Favor unions and unity. PMID- 3848749 TI - On probation. PMID- 3848750 TI - Where are we now? Recent developments in the growth of services. PMID- 3848751 TI - Living and learning in ordinary housing. PMID- 3848753 TI - Community mental handicap teams. PMID- 3848752 TI - The nursing process--a core concept for mental handicap nursing. PMID- 3848754 TI - Safeguarding the rights and interests of mentally handicapped people. PMID- 3848755 TI - Communication--a patient's view. PMID- 3848756 TI - Consequences of poor communication between nurses and patients. PMID- 3848757 TI - Communication--why it can go wrong. PMID- 3848759 TI - Getting it right--inter-professional communication. PMID- 3848758 TI - Communication skills in nursing: a practical account. PMID- 3848760 TI - Getting it right--counselling. PMID- 3848761 TI - Getting it right--patient teaching. PMID- 3848762 TI - Infection control--protective clothing. PMID- 3848763 TI - Growth and development in childhood. PMID- 3848764 TI - Food, fats and facts for nutrition in children. PMID- 3848765 TI - Play as a coping mechanism. PMID- 3848766 TI - One, two, three, jump--a case history of head injury in a young child. PMID- 3848767 TI - Cystic fibrosis--a cruel inheritance. PMID- 3848768 TI - Health care of the school child. PMID- 3848770 TI - Nurse practitioner: new decisions. Law for the nurse manager. PMID- 3848769 TI - The head nurse meeting: who, what, when and where. PMID- 3848771 TI - Toward a comprehensive nursing intensity index: Part I, development. PMID- 3848772 TI - Triage in the emergency department. PMID- 3848773 TI - Managing layoffs: a comprehensive approach. PMID- 3848774 TI - An interim stay unit reduces costs. PMID- 3848775 TI - Criticism--oil or sand in the gears? Art & science of management. PMID- 3848776 TI - Griping and grousing about nursing. PMID- 3848777 TI - A little something in the city. PMID- 3848778 TI - Give screening where screening is due. PMID- 3848779 TI - Image and reality. 2. PMID- 3848780 TI - Beyond collective action. Fired? No Contract? Federal law may protect you. PMID- 3848781 TI - How nurses can work with the families of the mentally ill. PMID- 3848782 TI - Psychiatric-mental health nursing in a day therapy program: new challenges and opportunities. PMID- 3848783 TI - Job security--references for nurses. PMID- 3848784 TI - Perinatal care in Oklahoma today--room for improvement. PMID- 3848785 TI - Compartment syndrome (continuing education). PMID- 3848786 TI - Use of the wick catheter for diagnosing and monitoring compartment syndrome. PMID- 3848787 TI - Assessment of neurovascular status in children. PMID- 3848789 TI - Thrombophylaxis with antiembolism stockings. PMID- 3848788 TI - Deep vein thrombosis, pulmonary embolism, and prophylaxis in the orthopaedic patient. PMID- 3848791 TI - Complications from intraoperative positioning. PMID- 3848790 TI - Creative approaches to pressure sore problems. PMID- 3848792 TI - Cast syndrome. PMID- 3848793 TI - Nursing knowledge: ammunition for power. PMID- 3848794 TI - Teens just want to have fun? PMID- 3848795 TI - Young children with cerebral palsy: practical guidelines for care. PMID- 3848796 TI - Hospital nurse practitioners: a trial approach. PMID- 3848798 TI - Acquired immune deficiency syndrome in infants and children. PMID- 3848797 TI - Anorexia nervosa. PMID- 3848799 TI - Initial assessment and management of chronic diarrhea in toddlers. PMID- 3848800 TI - Pit and fissure sealants in the prevention of tooth decay. PMID- 3848801 TI - Pediatric management problems (mucocutaneous lymph node syndrome). PMID- 3848802 TI - Pediatric drug information. Common pediatric intravenous medication administration problems. PMID- 3848804 TI - Legislative challenges for nursing in the '80s. PMID- 3848803 TI - Evaluation in nursing: principles and practice. PMID- 3848805 TI - The Community Nursing Centers Bill. PMID- 3848806 TI - The fate of the National Institute of Nursing. PMID- 3848807 TI - High technology and the elderly: a mixed blessing? PMID- 3848808 TI - Gerontological nursing research: 1975 to 1984. PMID- 3848809 TI - Commitment to clinical excellence in nursing homes. PMID- 3848810 TI - Attitudes toward the elderly: nursing students' perspectives. PMID- 3848811 TI - Environmental influences that affect nursing staff. PMID- 3848812 TI - Core content in geropsychiatric nursing. PMID- 3848814 TI - Characteristics of practical nursing education. PMID- 3848813 TI - Caring: a concept within nursing. PMID- 3848815 TI - Nuclear magnetic resonance observation of the triple interaction between A9 and AU12 in yeast tRNAPhe. AB - The nuclear Overhauser effect (NOE) was used to identify one of the amino proton resonances of base A23 in interaction with A9. These bases form a triple with U12 in the D stem of yeast tRNAPhe. The identification was verified by finding an NOE from this amino proton to the C8 proton of A9, as determined by comparisons of NOE's in a native and a C8-deuterated sample. PMID- 3848816 TI - Group faculty practice. PMID- 3848817 TI - Coping with shrinking resources. PMID- 3848818 TI - Cooperative education: experience-based learning. PMID- 3848820 TI - Noncompliance: an appropriate nursing diagnosis? PMID- 3848819 TI - Help for the burned-out nurse? PMID- 3848821 TI - A biopsychosocial view of human health. PMID- 3848822 TI - The continuing care nurse. PMID- 3848823 TI - Ten hints for thesis survival. PMID- 3848824 TI - Computers in use--design of a system for the study of a chronic disease. PMID- 3848825 TI - Role of social resource variables upon life satisfaction in black climacteric hysterectomized women. PMID- 3848827 TI - Teenagers' rationales for their food behaviours: directives for teaching. PMID- 3848826 TI - [Relationship between the role played by nursing personnel and the role assumed by elderly subjects in a long-term care institution]. PMID- 3848828 TI - Non-degree continuing nursing education needs of Alberta's registered nurses. PMID- 3848829 TI - Suddenly, last summer. PMID- 3848830 TI - Nurses' pay. Pay talks. PMID- 3848832 TI - Is it the unkindest cut? PMID- 3848831 TI - ICN congress. Out in force. PMID- 3848833 TI - Staff appraisal. Means of assessment. PMID- 3848834 TI - Mitral valve replacement. PMID- 3848835 TI - Improving biliary drainage management. PMID- 3848836 TI - Neurological observations. PMID- 3848837 TI - Working happily. PMID- 3848838 TI - Education: in search of identity. PMID- 3848839 TI - Toxocariasis. PMID- 3848840 TI - Backchat. Man or machine? PMID- 3848841 TI - Minding mental health. Interview by Harriet Gaze. PMID- 3848842 TI - Management budgeting: hey, big spender! PMID- 3848843 TI - Depression: Wounded healers. Interview by Annie Faulkner. PMID- 3848844 TI - Luck of the Irish. Interview by Laurence Dopson. PMID- 3848845 TI - Passing judgement. PMID- 3848846 TI - Care about food. Eating against cancer. PMID- 3848847 TI - Care about food. Catering for the patient. PMID- 3848848 TI - Staff appraisal: trying to do better. PMID- 3848849 TI - A rewarding experience. PMID- 3848850 TI - Stand up and take your medicine. PMID- 3848851 TI - Olfactory disorders: on the scent. PMID- 3848852 TI - Cosmic nursing: do old people come from outer space? PMID- 3848853 TI - Backchat. Money well spent? PMID- 3848854 TI - Royal College of Midwives supplement. Great expectations. Interview by Laurence Dopson. PMID- 3848855 TI - Royal College of Midwives supplement. Plus ca change. PMID- 3848856 TI - Royal College of Midwives supplement. Bedside manners. PMID- 3848857 TI - Royal College of Midwives. Breastfeeding rights. PMID- 3848858 TI - Royal College of Midwives supplement. Intravenous infusion. PMID- 3848859 TI - Royal College of Midwives supplement. Preventing stillbirths. PMID- 3848860 TI - Royal College of Midwives supplement. Gospel according to Myles. Interview by Laurence Dopson. PMID- 3848861 TI - School deaths: lessons of a tragedy. PMID- 3848862 TI - Who needs a caesarean? PMID- 3848863 TI - Cancer: the guilty secret. PMID- 3848864 TI - Battleground for the profession. PMID- 3848865 TI - Asthma in the family. PMID- 3848866 TI - Asthma in the family. Peter and Paul. PMID- 3848867 TI - Bereavement. Letting Alan go. PMID- 3848868 TI - Teaching the elderly about drugs. PMID- 3848869 TI - The education debate. A question of status. PMID- 3848870 TI - Appraisal. Going round in circles. PMID- 3848871 TI - Mental health nursing. A suitable case for day care. PMID- 3848872 TI - Mental health nursing. From house to home. PMID- 3848874 TI - Backchat. Practising what you preach. PMID- 3848873 TI - Mental health nursing. The hidden problem. PMID- 3848875 TI - Music therapy. PMID- 3848876 TI - Is there life after Griffiths? PMID- 3848877 TI - Whither community nursing? PMID- 3848878 TI - Fresh and dry? PMID- 3848879 TI - Caring for the elderly. Forgotten something? PMID- 3848880 TI - Care of the elderly. The diagnosis trap. PMID- 3848881 TI - Penetrating injuries of the head and spine. PMID- 3848882 TI - Rehabilitation. Diabetes and amputation at 73. PMID- 3848883 TI - Cause for complaint. A private matter. PMID- 3848884 TI - Accident and emergency. Ambulance. PMID- 3848885 TI - How mothers learn to cope. PMID- 3848886 TI - Budgeting for beginners. Taking stock of staff. PMID- 3848887 TI - Staff appraisal. Starting from scratch. PMID- 3848888 TI - Education. The riches of learning. PMID- 3848889 TI - Coming down to earth. Interview by Laurence Dopson. PMID- 3848890 TI - Mental health. Consumer's charter? PMID- 3848891 TI - Altered images. PMID- 3848893 TI - Where adult education fits in. PMID- 3848892 TI - Staffing levels. The demographic factor. PMID- 3848894 TI - The Overton experiment. PMID- 3848895 TI - Care of the elderly. Cues to clarity. PMID- 3848896 TI - Care of the elderly. From diagnosis to management. PMID- 3848898 TI - Graphology: pen and paper diagnosis. PMID- 3848897 TI - Stab wounds. PMID- 3848899 TI - Protecting the parents? PMID- 3848900 TI - In support of specialisation. Interview by Laurence Dopson. PMID- 3848901 TI - Who's afraid of Virginia Henderson?. Interview by Pam Holmes. PMID- 3848902 TI - Abortion. A viable proposition? PMID- 3848903 TI - Suntanning. Skin care. PMID- 3848904 TI - Safe as houses. PMID- 3848905 TI - Postnatal care. Time to avoid the clinic? PMID- 3848906 TI - Postnatal care. Midwifery after birth. PMID- 3848908 TI - Art in hospitals. Mural, mural on the wall. PMID- 3848907 TI - Postnatal care. Twin trauma. PMID- 3848909 TI - Care about food. Ready salted. PMID- 3848910 TI - Management. One step ahead. PMID- 3848911 TI - Talking to stroke patients. PMID- 3848912 TI - Occupational health. Tb or not Tb. PMID- 3848913 TI - Cosmic nursing. Solitude and sanity. PMID- 3848914 TI - How are sisters prepared? PMID- 3848916 TI - Dealing with teens and twenties: family welfare concern. PMID- 3848915 TI - Backchat. Bad management? PMID- 3848917 TI - 'Womb to tomb' health services: role of nurses. PMID- 3848918 TI - World Health Day. Healthy youth: our best resource. PMID- 3848919 TI - Primary health care: experiences of the Maldives and Singapore. PMID- 3848920 TI - Sneaking well wishers: attendants and visitors in wards. PMID- 3848921 TI - Acquired immune deficiency syndrome: a study on impact of heredity. PMID- 3848923 TI - Education. Options for care studies. PMID- 3848922 TI - Cryosurgery in haemorrhoids. PMID- 3848924 TI - Nurses in society. Tips of the TV trade. Interview by Cate Campbell. PMID- 3848925 TI - Mental age. The age of the specialist. PMID- 3848926 TI - A leg up for the ulcer. PMID- 3848927 TI - Clinical revision series 6. Chronic venous insufficiency. PMID- 3848928 TI - Kicking the habit. PMID- 3848929 TI - Theorised out of practice. PMID- 3848930 TI - Stepping stones to the nursing process. PMID- 3848931 TI - Research: a real debate by two imaginary people. PMID- 3848932 TI - Community: a supportive network. PMID- 3848933 TI - A way to go home. PMID- 3848934 TI - Matters of conscience. Pervasive ethical problems. PMID- 3848935 TI - Midwifery. 2. Sensitive counsel. PMID- 3848937 TI - OH, what a nurse. PMID- 3848936 TI - Challenging practices in midwifery. PMID- 3848938 TI - Follow-on milk: is it necessary? PMID- 3848939 TI - Something lost along the way. PMID- 3848940 TI - Bedside manners. PMID- 3848941 TI - Challenging classroom traditions. PMID- 3848942 TI - Nurses in society. Cut off point. PMID- 3848943 TI - Clinical revision series. 10. Wolff-Parkinson-White syndrome. PMID- 3848944 TI - Self-inflicted injury and illness. PMID- 3848946 TI - Down your way. Liverpool. PMID- 3848945 TI - Malignant skin manifestations. PMID- 3848947 TI - Psychiatry. Effective and efficient. PMID- 3848948 TI - Who will be in charge? PMID- 3848949 TI - Education. The nurse therapist. PMID- 3848950 TI - Tearing down walls. PMID- 3848952 TI - Distance drains enchantment. PMID- 3848951 TI - Mary: a challenge for care. PMID- 3848953 TI - Caught in a vicious circle. PMID- 3848954 TI - Circles of wisdom. PMID- 3848955 TI - Preparing for parenthood. PMID- 3848956 TI - Breaking away from routine care. PMID- 3848957 TI - No grave, no photograph, no baby. PMID- 3848959 TI - The second stage. PMID- 3848958 TI - Give the stragglers time. PMID- 3848960 TI - Pay--where do we go from here? PMID- 3848961 TI - Management: unhappy learners ahead? PMID- 3848962 TI - Gut feelings that don't add up. PMID- 3848963 TI - Clinical revision series. 11. Xerostomia in malignant disease. PMID- 3848964 TI - Education. Listening to people. PMID- 3848966 TI - Looking back in knowledge. PMID- 3848965 TI - Down your way: Ipswich. PMID- 3848967 TI - Trauma in the elderly. PMID- 3848968 TI - And my last point, madam chairman... PMID- 3848969 TI - Holding two top management posts. Interview by Martin Vousden. PMID- 3848970 TI - ICN--a student's view of Tel Aviv. PMID- 3848971 TI - Nursing care study. Imprisoned by fear. PMID- 3848972 TI - The chemotherapy challenge. PMID- 3848973 TI - Don't needle the patient. PMID- 3848974 TI - Implementing intravenous policy. PMID- 3848975 TI - Down your way: Portsmouth. PMID- 3848976 TI - Supporting the family. PMID- 3848977 TI - But will it work in practice? PMID- 3848978 TI - Psychological care in labour. PMID- 3848979 TI - Clinical revision series 12. Uterovaginal prolapse. PMID- 3848980 TI - Education. Never too old to learn. PMID- 3848981 TI - Endangered species. PMID- 3848982 TI - Don't spread that infection. PMID- 3848983 TI - Why the prince has turned into a frog. PMID- 3848984 TI - How should we choose? PMID- 3848985 TI - Sex and the elderly. PMID- 3848986 TI - Nursing care study. Nasal obstruction. PMID- 3848987 TI - Education. Test run. PMID- 3848988 TI - Processed patients. PMID- 3848989 TI - Mental handicap. Community nursing in special schools. PMID- 3848990 TI - Down your way: King's Lynn. PMID- 3848991 TI - Crisis in care. There's been an accident. PMID- 3848992 TI - The quality of dying. PMID- 3848994 TI - Clinical revision series. 13. Anterior resection for carcinoma of the rectum. PMID- 3848995 TI - Who'd be a nurse? PMID- 3848993 TI - Overcoming ethnic barriers. PMID- 3848997 TI - Health education: finding the right cue. PMID- 3848996 TI - Promoting positive health. PMID- 3848998 TI - The age-old problem. PMID- 3848999 TI - Midwifery: California cares. PMID- 3849000 TI - Mothers on the assembly line. PMID- 3849001 TI - An unplanned career. PMID- 3849002 TI - A measure of responsibility. PMID- 3849003 TI - Down your way: Lancaster. PMID- 3849004 TI - Anomalous origin of the left coronary artery. PMID- 3849005 TI - Clinical revision series. 14. The Patrick splint. PMID- 3849006 TI - Moving patients with head injuries. PMID- 3849007 TI - Double lives mean double standards. PMID- 3849008 TI - What have we learned from Hiroshima? PMID- 3849009 TI - Part of the health care team. PMID- 3849010 TI - Minor disorders in A and E. PMID- 3849011 TI - Projecting developments. PMID- 3849013 TI - Matters of importance. PMID- 3849012 TI - Chairing the future. Interview by Anthony Carr. PMID- 3849014 TI - Professional probe. 1. The NHS could be fantastic. Interview by Catharine Sadler. PMID- 3849015 TI - Teaching self-medication. PMID- 3849016 TI - Legislation. 2. A good decade for children and the mentally ill. PMID- 3849017 TI - Taking the strain. PMID- 3849018 TI - Psychiatry. Preventive roles. PMID- 3849019 TI - Fat modified diets. PMID- 3849021 TI - Care for carers. PMID- 3849020 TI - The endangered species bites back. PMID- 3849022 TI - Once upon a time. PMID- 3849023 TI - Matters of conscience. The power of possession. PMID- 3849024 TI - If at first you don't succeed ... try again. PMID- 3849025 TI - The Worker Rehabilitation Questionnaire (WRQ): an application of task inventory technology to vocational rehabilitation. PMID- 3849026 TI - Setting up a microcomputer database for a pain clinic. PMID- 3849027 TI - When doctor questions nurse competency: disaster. PMID- 3849028 TI - Nurse "bugs" employer--terminated. 1 million dollars damages awarded. Case in point: Meierer v. E.I. DuPont De Nemours and Co. (607 F. Supp. 1170-SC). PMID- 3849029 TI - Legal case briefs for nurses. NY: pt. neglect: nursing judgment; NY: anoxic brain damage: nurse anesthetist sued. PMID- 3849030 TI - Pregnancy--leave of absence denied: discrimination. Case in point: Maddox v. Grandview Care Center, Inc. (607 F. Supp. 1404-GA). PMID- 3849031 TI - A life table analysis of the labor force participation of U.S. nurses, 1949 to 1980. AB - Data from seven inventories of registered nurses by the American Nurses' Association and the 1980 National Sample Survey of Registered Nurses are analyzed in a life table format to examine changes in nurse labor force participation. The results show a substantial increase in the labor force participation of nurses, as a nurse aged 20 could be expected to spend 28.5 years in the labor force in 1949 and 34.1 years in the labor force in 1980. Much of that rise seems attributable to increasing full-time employment. There is a positive relationship between participation in the nursing labor force and a nurse's highest level of educational preparation, but that relationship is not a simple one. Nurses with a master's or higher degree are very active in the labor force, while diploma nurses are much less likely to be employed. At the same time, nurses with baccalaureate degrees have relatively low rates of labor force participation, but associate degree nurses have rates rivaling the most highly educated. PMID- 3849032 TI - Comprehension of information for informed consent by spouses of surgical patients. AB - The adequacy of comprehension of the information needed for informed consent to participate in research on spouse responses to a husband's or wife's general surgery was assessed. Comprehension of information about the research study by 75 spouses was measured by the Informed Consent Questionnaire containing questions on study purpose, time involvement, nature of participation, risks, benefits, voluntariness, confidentiality, and anonymity. The result showed that 72 of the 75 spouses had adequate comprehension of the information for informed consent. Because adequate comprehension is atypical of most studies, possible reasons for this unexpected result are discussed and then explained within a self determination theory of informed consent. PMID- 3849033 TI - Indirect auscultatory blood pressure measurement at two sites in the arm. AB - The purpose of this research was to describe and compare indirect auscultatory blood pressure measurement at the forearm site with values obtained at the traditional upper arm site. The forearm site has been suggested as an alternative site for more accurate measurement of blood pressure in obese patients. This study explores differences in data obtained at the two sites on 98 female subjects, aged 18 to 25 years, with nonobese arms and without history of cardiovascular-renal disease. Data were analyzed using a paired t test (p less than .05). Results indicate that statistically significant differences exist between the sites based on the lower systolic values and higher diastolic values obtained at the forearm site. Additional study is recommended to further clarify differences and to include obese subjects. PMID- 3849035 TI - Obesity in lower and middle socio-economic status mothers and their children. AB - To identify potential nursing interventions for obesity in lower socioeconomic status populations, the relationships between maternal and child obesity, socioeconomic status, maternal nutritional knowledge, and locus of control for maternal weight in 144 children and their mothers were studied. Subjects were recruited from two clinic populations; Clinic 1 was of lower socioeconomic status than Clinic 2. As compared with those from Clinic 2, mothers from Clinic 1 were heavier, had less nutritional knowledge, and were more external with respect to locus of weight control. There was a trend for Clinic 1 children to be heavier than those in Clinic 2 but this finding was not statistically significant. The lower socioeconomic status children significantly resembled their mothers' adiposity (possibly foreshadowing adult obesity), however, the middle socioeconomic status children did not resemble their mothers. PMID- 3849034 TI - Personal control interventions: short- and long-term effects on surgical patients. AB - A randomized 2 X 3 X 2 factorial design was used to evaluate the short- and long term effects of interventions that provided different means of exerting personal control over postoperative experiences in a sample of 121 black and 47 white hysterectomy patients. One variable was the presence or absence of the description of the experience in concrete sensory terms; the second variable was instruction in a cognitive-coping strategy, instruction in a behavior-coping strategy, or no instruction; and the third variable was experimental or control information about the posthospital experience. There was support for the coping processes that concrete sensory information was expected to stimulate, but no significant effects on resumption of usual life activities as was expected. The behavioral-coping technique was associated with a reduction in pain medication. The cognitive-coping technique was associated with reports of better physical recovery during hospitalization, but longer hospitalization. Posthospitalization recovery data, collected 2, 4, and 12 weeks after discharge, showed a different pattern of effects for the interventions than observed during hospitalization. PMID- 3849036 TI - A comparison of Professional Performance Examination scores of graduating associate and baccalaureate degree nursing students. AB - The Professional Performance Examination has four subtests of professional nursing performance: leadership, collaboration, research, and management of client care. If these four elements characterize the professional rather than the technical nurse, and if this test is representative of these elements, professional and technical nurses should be differentiated. Two alternate forms of each of the four subtests were administered to 86 subjects graduating from 12 associate degree nursing programs and 83 subjects graduating from 11 bachelor degree programs. Results showed no difference in leadership, collaboration, and management subtest scores, but the bachelors degree group scored significantly higher than the associate degree on the research subtest. These results suggested that either the test was not sensitive enough to detect all differences between the two groups, or the associate degree and bachelor degree subjects were not as different as generally supposed. PMID- 3849037 TI - The effects of hygiene interventions on the cerebrovascular status of severe closed head injured persons. AB - The cerebrovascular status of 19 severe closed head injured patients was assessed during oral, body, and indwelling catheter care. Heart rates, mean arterial blood pressures, mean intracranial pressures, and cerebral perfusion pressures were recorded at baseline, peak nursing intervention, and 1-minute recovery times. Significant increases (p less than or equal to .05) in the dependent variables were noted at peak intervention; by recovery time these elevated values had returned to baseline levels. Physiologic responses that did not prove clinically significant are discussed to account for the observed changes. Since cerebral perfusion pressures never fell below 50 mm Hg, the three hygiene interventions are procedures considered safe and beneficial to the patient with closed head injury. PMID- 3849038 TI - Life satisfaction, health control orientation, and illness-related factors in persons with osteoarthritis. AB - The purpose of this study was to assess life satisfaction in osteoarthritics and to explore relationships between that variable and health perception, health locus of control, and illness-related factors. The study group consisted of 160 osteoarthritics from four different types of settings. The osteoarthritics rated their present life satisfaction and recent health as relatively good and were externally controlled in terms of their health beliefs. Present life satisfaction was related to better health perception, internal locus of control, and less joint pain. PMID- 3849039 TI - Hypertension, perceived clinician empathy, and patient self-disclosure. AB - The purpose of this study was to compare groups of outpatient hypertensive and diabetic patients to a control group (no known chronic illnesses) on their perceptions of clinician empathy and the importance and difficulty of disclosing information about themselves to health care providers. It was hypothesized that hypertensives would differ from the other groups in perceiving less clinician empathy and in attributing less importance, but greater difficulty, to self disclosing. The sample was 54 hypertensives, 47 diabetics, and 115 nonchronically ill patients. Each subject completed the Empathy scale of the Barrett-Lennard Relationship Inventory and a patient self-disclosure questionnaire. The empathy hypothesis was supported but the self-disclosure hypotheses were not. Hypertensive patients differed from other patients in perceiving the least clinician empathy and in attributing the greatest importance to discussing their responses to health care. PMID- 3849040 TI - Issues of conceptualization and measurement of social support in the construction of nursing theory. AB - Social support has emerged in the last decade as a significant health behavior and, therefore, a promising focus of theory development in nursing. Nursing's concern with health, environment, and person provides an ideal perspective from which to take the lead in research, instrument development, and theory construction in social support. The focus of this article is the present development of the construct to assist nurse scholars toward an adequate conception of social support. Theoretical frameworks underlying definitions are examined, and issues of measurement and clinical assessment are discussed. PMID- 3849041 TI - Post hoc tests following analysis of variance. AB - Review of nursing research literature revealed that post hoc comparisons of mean differences were not consistently reported, although their use was warranted. This paper describes the critical features of post hoc procedures and offers guidelines for selecting one method over another. Particular attention is given to how various procedures control Type 1 error. Selection of post hoc procedures considering the investigator's desire for control of Type 1 and Type 2 error also is presented. PMID- 3849042 TI - RNI's answer to hard economic times. PMID- 3849043 TI - Safety guidelines for the cardiac athlete. PMID- 3849044 TI - Essential blepharospasm and implications of nursing. PMID- 3849045 TI - Rehabilitation research: pathophysiology and management of neurogenic bladder in multiple sclerosis. PMID- 3849046 TI - CPR the patient with a halo apparatus. PMID- 3849047 TI - Breast cancer: the new biology in conflict with the old dogma. PMID- 3849048 TI - Breast self-examination today: an overview of its use and its value. PMID- 3849049 TI - The changing role of surgery in the treatment of breast cancer. PMID- 3849050 TI - Systemic therapy of breast cancer--1985. PMID- 3849051 TI - The psychologic impact of breast cancer on relationships. PMID- 3849052 TI - Breast cancer surgeries and psychosexual sequelae: implications for remediation. PMID- 3849053 TI - The impact of breast cancer on the family. PMID- 3849054 TI - Primary breast cancer: physical consequences and rehabilitation. PMID- 3849055 TI - Anorexia nervosa and exercise. Implications from recent findings. PMID- 3849056 TI - Sports and cosmetics. PMID- 3849057 TI - Warming-up and stretching for improved physical performance and prevention of sports-related injuries. AB - Competitive and recreational athletes typically perform warm-up and stretching activities to prepare for more strenuous exercise. These preliminary activities are used to enhance physical performance and to prevent sports-related injuries. Warm-up techniques are primarily used to increase body temperature and are classified in 3 major categories: (a) passive warm-up - increases temperature by some external means; (b) general warm-up - increases temperature by nonspecific body movements; and (c) specific warm-up - increases temperature using similar body parts that will be used in the subsequent, more strenuous activity. The best of these appears to be specific warm-up because this method provides a rehearsal of the activity or event. The intensity and duration of warm-up must be individualised according to the athlete's physical capabilities and in consideration of environmental factors which may alter the temperature response. The majority of the benefits of warm-up are related to temperature-dependent physiological processes. An elevation in body temperature produces an increase in the dissociation of oxygen from haemoglobin and myoglobin, a lowering of the activation energy rates of metabolic chemical reactions, an increase in muscle blood flow, a reduction in muscle viscosity, an increase in the sensitivity of nerve receptors, and an increase in the speed of nervous impulses. Warm-up also appears to reduce the incidence and likelihood of sports-related musculoskeletal injuries. Improving flexibility through stretching is another important preparatory activity that has been advocated to improve physical performance. Maintaining good flexibility also aids in the prevention of injuries to the musculoskeletal system. Flexibility is defined as the range of motion possible around a specific joint or a series of articulations and is usually classified as either static or dynamic. Static flexibility refers to the degree to which a joint can be passively moved to the end-points in the range of motion. Dynamic flexibility refers to the degree which a joint can be moved as a result of a muscle contraction and may therefore not be a good indicator of stiffness or looseness of a joint. There are 3 basic categories of stretching techniques: (a) ballistic--which makes use of repetitive bouncing movements; (b) static--which stretches the muscle to the point of slight muscle discomfort and is held for an extended period; and (c) proprioceptive neuromuscular facilitation - which uses alternating contractions and stretching of the muscles. Each of these stretching methods is based on the neurophysiological phenomenon involving the stretch reflex.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3849058 TI - Gonadal steroids in athletic women contraception, complications and performance. AB - Gonadal steroids are altered by the reproductive system's adaptation to conditioning exercise. Contraceptive options for the athletic woman include all measures appropriate for the sedentary woman. Barrier methods (always with spermicidal jelly) are the preferred choice. The cardiovascular risks, decreased aerobic performance, and shorter time to muscular exhaustion related to oral contraceptives make this a less desirable option. Potential complications from the steroid changes of intense exercise include: low oestrogen and progesterone with risk of loss of trabecular bone and early osteoporosis, and absent progesterone with low normal oestrogen levels associated with risk of endometrial or breast cancer. Therapeutic options for the amenorrhoeic or young athlete include supplemental oral calcium, cyclic oral progesterone, or possibly cyclic physiological oestrogen and progesterone. The anovulatory (usually older) athlete with regular menses needs cyclic progesterone. Medroxyprogesterone 10mg on days 16 to 25 of the cycle or for 10 days monthly can potentially prevent endometrial and breast cancer, give predictable cycles, improve trabecular bone balance and stimulate the return of ovulatory cycles. A practical approach to anovulatory infertility in the athlete includes a 10% reduction in exercise intensity and/or an increase in percentage body fat to 18 to 20%. Cyclic vaginal progesterone (25mg bid) can then treat short luteal phase cycles. With improved understanding of the hormonal adaptations to conditioning exercise, we will be better able to outline contraceptive and therapeutic options in the future. PMID- 3849060 TI - [Substance abusers in a general hospital: a team task]. PMID- 3849061 TI - [Role of the general practitioner with drug abusers]. PMID- 3849059 TI - Osteoid osteoma. Distant, periarticular, and subarticular lesions as a cause of knee pain. AB - Osteoid osteoma, a benign osteoblastic tumour comprised of osteoid and atypical bone, is a well-known entity. However, clinical diagnosis may be delayed, especially when the pain is referred to a nearby joint. This paper reports a series of 11 cases occurring in physically active patients in whom the diagnosis was delayed because of pain referral to the knee. The mean duration from the onset of symptoms to diagnosis of osteoid osteoma was 20 months (range 3 to 48 months). Review of these 11 lesions indicates that they can be classified on the basis of their anatomical location: (a) distant to the knee; (b) periarticular; or (c) subarticular (intraarticular). It should be noted that initially only 5 of the 11 cases displayed characteristic x-ray findings; in the remaining 6 cases, diagnosis was dependent on positive 99mTc radionuclide bone scans, tomograms, and computerised tomography scans. Of the 9 patients who underwent surgical resection of their lesions, all had complete relief of symptoms and all continued to be asymptomatic at follow-up evaluations. PMID- 3849062 TI - [Caring for substance abusers: mission impossible?]. PMID- 3849063 TI - [Drugs as a substitute for thought]. PMID- 3849064 TI - [Suffering families]. PMID- 3849065 TI - [Help and prevention: the telephone]. PMID- 3849066 TI - [The detoxification treatment]. PMID- 3849067 TI - [Psychotherapeutic and educational management of the drug abuser]. PMID- 3849068 TI - [Can the intervention of social workers contribute to improved well-being for drug abusers?]. PMID- 3849069 TI - [The physical approach to substance abusers]. PMID- 3849071 TI - [Lexicon of drug use terms]. PMID- 3849070 TI - [Meeting drug abusers]. PMID- 3849072 TI - [Clinical training in assistance and care of drug abusers and marginal abusers]. PMID- 3849073 TI - [The matter of pillows...]. PMID- 3849074 TI - [Soap]. PMID- 3849075 TI - [The hemophiliac at the "Air and Sunshine" center]. PMID- 3849077 TI - [Spontaneous purulent meningitis in adults]. PMID- 3849076 TI - [Algodystrophies]. PMID- 3849078 TI - [Aspirin or acetylsalicylic acid]. PMID- 3849079 TI - [Current aspects of toxoplasmosis]. PMID- 3849080 TI - [Prevention of sexually transmissible diseases]. PMID- 3849081 TI - [Decontamination, antisepsis, disinfection]. PMID- 3849082 TI - Why you have to make those tough decisions. PMID- 3849083 TI - Who was he before he became a patient? PMID- 3849085 TI - How to manage CVP lines. PMID- 3849084 TI - Addicted nurses: clues to the hidden problem. PMID- 3849086 TI - Some skills I thought I'd never need. PMID- 3849087 TI - The angina that can kill. PMID- 3849088 TI - The real risk of acetaminophen overdose. PMID- 3849089 TI - The chance encounter that made me stay in nursing. PMID- 3849090 TI - Buying time when you face a bowel obstruction. PMID- 3849092 TI - The right way to report a colleague. PMID- 3849091 TI - The high cost of preterm labor. PMID- 3849093 TI - Why I changed my stand on the BSN. PMID- 3849094 TI - Vitamin C: who needs it? And when? PMID- 3849095 TI - Ducking the debate over BSNs. PMID- 3849097 TI - Providing patient care at Expo 86. PMID- 3849096 TI - Guidelines for the practice of registered nurses in licensed health care agencies May 1985. PMID- 3849098 TI - Fly-in outer coast nurse. PMID- 3849099 TI - Liaison nurse helps relieve the anguish. PMID- 3849100 TI - Support growing for legislation project. PMID- 3849101 TI - RN provides health care link for island residents. PMID- 3849103 TI - Leadership in action. PMID- 3849102 TI - Independent nurse practitioner--a case study. PMID- 3849105 TI - Qualities that make a preceptor. PMID- 3849104 TI - A process of role transition: nursing students in a clinical preceptorship. PMID- 3849106 TI - Picking up the pieces. The Grange Inquiry. PMID- 3849107 TI - A call to arms. PMID- 3849108 TI - Rattling the health care cage. PMID- 3849109 TI - Antibiotic treatment of infectious peritonitis in chronic peritoneal dialysis. AB - Antibiotic treatment of infectious peritonitis was evaluated in 97 primary episodes registered among 66 patients treated with chronic intermittent peritoneal dialysis over a 3-year period. 87% of the cases could be treated with antibiotics of low toxicity. The chance of continuing peritoneal dialysis after treatment of peritonitis was better among out-patients than among hospitalized patients. The overall continuance rate was 90%. Relapse of the primary infection occurred in 10% of the cases and was associated with a treatment duration shorter than 2 weeks. Superinfection occurred in 5% of the cases. In 15% the dialysis catheters had to be replaced, due primarily to problems of dialysis technique. Death during active peritonitis occurred in 4% of the cases and was associated with severe underlying diseases or complications, such as intestinal perforation and intraperitoneal abscess formation. Side effects attributable to antibiotic treatment occurred in 13% of the cases, the most common side effect being self limiting diarrhoea. PMID- 3849111 TI - A review of the spinal injury learning series. PMID- 3849110 TI - Patient education programs. PMID- 3849112 TI - The psychiatric SCI patient. PMID- 3849114 TI - [Pitfalls in auscultatory blood pressure determination]. PMID- 3849113 TI - [Kallikrein-kinin system of the blood in peptic ulcer]. PMID- 3849115 TI - [Administration of drugs through the skin]. PMID- 3849116 TI - [One should close a section of Middelfart for improved care. Interview by Helle Kastholm Hansen]. PMID- 3849117 TI - [Psychiatry. Restraints will always be cheaper than salaries. Interview by Helle Kastholm Hansen]. PMID- 3849118 TI - [Executive Board. Nurses' employment better than ever]. PMID- 3849119 TI - [Board of Health. New and revised information on head lice in schools]. PMID- 3849120 TI - [Death and dying. Resolve the lack of frankness surrounding autopsy]. PMID- 3849121 TI - [Do community health nurses cooperate in complying with WHO's health strategy?]. PMID- 3849123 TI - [Home nurses often have little knowledge about patients]. PMID- 3849122 TI - [Emigrants' children are a group at risk as far as nutrition is concerned]. PMID- 3849124 TI - [Pressure sores. Many heel and buttock sores are avoidable]. PMID- 3849125 TI - [Drugs in acute heart disease. 1]. PMID- 3849126 TI - [Reitgjerdet--a tragedy in psychiatry. Treatment is more like punishment and oppression. Interview by Peter Hjorth]. PMID- 3849128 TI - [Discussion on territory of vital interest to nursing]. PMID- 3849127 TI - [Health policy. WHO charges us to think differently]. PMID- 3849129 TI - [Health policy. How can we establish supportive health education?. Interview by Ulla Danielsen]. PMID- 3849130 TI - [Health policy. How can we reinforce collaboration in health care delivery?]. PMID- 3849131 TI - [Radioactivity. No ground for panic in the treatment of radioactive injuries]. PMID- 3849132 TI - [Ambulance system. OLA-ambulances with nurses save 81 with heart arrest. Interview by Peter Hjorth]. PMID- 3849133 TI - [Heart-lung resuscitation. Massive campaign to save lives in heart arrest. Interview by Peter Hjorth]. PMID- 3849134 TI - [Management structure. New, "audacious" thoughts in committee's report are quite superficial. Interview by Helle Kastholm Hansen]. PMID- 3849135 TI - [Reitgjerdet--a tragedy in psychiatry. A human society riddled with anxiety conflicts]. PMID- 3849136 TI - [The best proof of interest in the new technology]. PMID- 3849138 TI - [Status document. Nurses' professional domain. Danish Nursing Council February 1985]. PMID- 3849137 TI - [Education. A matter of both craft and practice discipline]. PMID- 3849139 TI - [Discussion needs leadership in primary health care]. PMID- 3849140 TI - [Executive Board. New arrangement does not mean a lower professional level]. PMID- 3849141 TI - [Death and dying. Need for better care and nursing of the dying]. PMID- 3849142 TI - [Negotiation status 1985. Nursing going along in protest against legal interference]. PMID- 3849143 TI - [Psychiatry. Patients realize that staff too has its strong and weak sides]. PMID- 3849144 TI - [Death and the dying. Health visitor's role in families when infants die]. PMID- 3849145 TI - [Nursing. Open kardex is a question of human opinion]. PMID- 3849146 TI - [Negotiations 1985. 60 delegations in protest against parliamentary committee]. PMID- 3849147 TI - [Negotiations 1985. Contents of law package with conflicts]. PMID- 3849148 TI - [Education's side at the university remains a lever for the profession]. PMID- 3849149 TI - [Reitgjerdet--a tragedy in psychiatry. Society's heavy responsibility for the impoverished hospital]. PMID- 3849150 TI - [Competence. Proof of instruction without value at other places of work]. PMID- 3849151 TI - [Nursing home field. Development project implied radical attitude change]. PMID- 3849152 TI - [Health policy. Ill-advised to reduce primary prevention]. PMID- 3849153 TI - [Health visitors can function as consultants in health]. PMID- 3849154 TI - [Provokes not just a little but doesn't turn out any discussion]. PMID- 3849155 TI - [Deaconesses are what you make them to be]. PMID- 3849156 TI - [Reitgjerdet--a tragedy in psychiatry. A hospital which causes and maintains illness]. PMID- 3849157 TI - [Regulations for handling hazardous substances 5 years underway]. PMID- 3849158 TI - [Children in hospital. Successful fresh thinking in work with cancer-stricken children]. PMID- 3849160 TI - [Prevention of accidents with chemical household products]. PMID- 3849159 TI - [Better conditions for nursing mothers in the labor market]. PMID- 3849161 TI - [Reactions reflecting broad contact between representative and county board]. PMID- 3849162 TI - [How do we still dress our patients?]. PMID- 3849163 TI - [Experiences with equal teaching responsibility for students and teachers]. PMID- 3849165 TI - [Attempt to inform all relatives precisely regardless of education]. PMID- 3849164 TI - [Health care activities in developing countries. Course on tropical medicine and hygiene]. PMID- 3849166 TI - [Reitgjerdet--a tragedy in psychiatry. A nursing professional and administrator for low standards. Interview by Peter Hjorth]. PMID- 3849167 TI - [Psychotherapy. Psychological game disclosed by transactional analysis]. PMID- 3849168 TI - [Drugs in acute heart disease. 2]. PMID- 3849169 TI - [Scoundrels in our psychiatry]. PMID- 3849170 TI - [WHO. Nurses must cooperate in changes]. PMID- 3849171 TI - [Nursing and psychotherapy seen in context]. PMID- 3849172 TI - [Psychotherapy. Optimism is the basis of gestalt therapy]. PMID- 3849173 TI - [The preventive function in an indistinct job]. PMID- 3849174 TI - [Care for the elderly. Many residents but do you know the person behind the individual?]. PMID- 3849175 TI - [Care for the aged. Why do the elderly change their sleeping habits in the nursing home?]. PMID- 3849176 TI - [Amnesty. Nurses should participate in the fight against torture]. PMID- 3849177 TI - [Pain treatment. Systematized education in epidural pain treatment]. PMID- 3849178 TI - [Nursing's role and goal in psychiatry]. PMID- 3849179 TI - [Negotiations 85. A permanent need for parallel wage development]. PMID- 3849180 TI - [Negligence and irresponsibility in the Middelfart affair]. PMID- 3849181 TI - [The right way of warming is the alpha and omega in cold and frost injuries]. PMID- 3849182 TI - [Institutionalized persons should be protected with a compulsory ombudsman]. PMID- 3849184 TI - Minimum employment standards for registered nurses. PMID- 3849183 TI - Nurse practitioner rights addressed by legal counsel. PMID- 3849185 TI - [Ideal or reality? Characteristics of self care within nursing assistance]. PMID- 3849186 TI - [Putting a patient who can walk in a wheelchair, is that allowed? Determining the urgency of self care activities]. PMID- 3849187 TI - [Creating conditions for self care via work organization]. PMID- 3849188 TI - [Nursing: professionally-directed support of self care]. PMID- 3849189 TI - [The concept of self care and professional attitude]. PMID- 3849190 TI - [Prevention of decubitus. Text and explanation of the consensus workshop]. PMID- 3849191 TI - [The Standing Committee Nursing: its end and its beginning]. PMID- 3849192 TI - [The homeless and provision of health services. III. The organization of care for the homeless. On admission and care of residents and transients]. PMID- 3849193 TI - [The derailed brain. Delirium in the general hospital]. PMID- 3849194 TI - [Documentation of nursing processes. Facets of a practice theory (I)]. PMID- 3849195 TI - [Nursing: wish or reality?]. PMID- 3849196 TI - [Dehydration: gentler than many realize]. PMID- 3849197 TI - [Shaping of a profile. One profession 2 kinds of professional education?]. PMID- 3849198 TI - [Involuntary commitment: therapy or confinement?]. PMID- 3849199 TI - [The new matrices VP and P. Developments in the methods and systems of nursing]. PMID- 3849200 TI - [Blood pressure monitoring, an aid and not a goal in itself]. PMID- 3849201 TI - [Services for mentally retarded in the Netherlands]. PMID- 3849202 TI - [2 years as patient ombudsman in psychiatry]. PMID- 3849203 TI - [The renewed content of the nursing process. Developments in the methods and systems of nursing (I)]. PMID- 3849204 TI - [AIDS: a new task field for nurses]. PMID- 3849206 TI - [Commercialization: an increasing phenomenon in health care]. PMID- 3849207 TI - [This is how patients can feel. If only I could talk]. PMID- 3849205 TI - [A diversified job. Group leader in the Dr Henri van der Hoeven hospital]. PMID- 3849208 TI - A surgical option for morbid obesity: vertical banding gastroplasty. PMID- 3849209 TI - Using power in the OR. PMID- 3849211 TI - Yesterday's O.R. PMID- 3849210 TI - Meeting demands for qualified O.R. nurses. PMID- 3849212 TI - [Effect of cadmium ions on the rate of the tRNA aminoacylation reaction]. AB - Cadmium ions are studied for their effect on the reaction rate of tRNA aminoacylation which was carried out using overall preparations of aminoacyl-tRNA synthetases (ARSases) isolated from muscles of male rabbits and from three-day pea seedling roots. Cadmium in the concentration of 3 X 10(-5) M is established to accelerate the reaction rate two times as compared to the norm. Other bivalent cations of metals lack this ability. PMID- 3849214 TI - The rationale for modern chiropractic treatment. PMID- 3849215 TI - The massage connection. PMID- 3849213 TI - [Indicators of the kallikrein-kinin system of the blood in patients with recurrent rheumocarditis and circulatory insufficiency]. PMID- 3849216 TI - People need nursing ... but who will provide it? PMID- 3849217 TI - Self-destructive patterns: implications for nursing. PMID- 3849218 TI - Geriatric secondment--a learning experience? PMID- 3849219 TI - [Pools: the professional doesn't care. The profession: you will hear from us]. PMID- 3849220 TI - [100,000 Goteburgers will learn how to save lives. Interview by Jan Thomasson]. PMID- 3849221 TI - [New working environment program. A manual on chemical substances]. PMID- 3849222 TI - [Thousands of people need Inga-Lill's help. Interview by Eva-Li Johansson]. PMID- 3849223 TI - [Getting education for permanent relief worker in Uppsala]. PMID- 3849224 TI - [Dialysis accident: guilty verdict shocks SHSTF]. PMID- 3849226 TI - [Severe criticism of dialysis system in unbiased statement]. PMID- 3849225 TI - [Dialysis accident: work colleagues' patience worn out. We want a new dialysis system now]. PMID- 3849227 TI - [Worn out in pools. Elina is sick of working in pools. I am tired of being the one who never can. Interview by Inger Lernevall]. PMID- 3849228 TI - [Occupational health service should investigate how badly pool nurses feel]. PMID- 3849229 TI - [In spite of the new psychiatric education custodians will educate themselves]. PMID- 3849230 TI - [The need for information about incest increasing--Lena works full-time to visit all those interested]. PMID- 3849231 TI - [Incest: the most harmful form of child abuse]. PMID- 3849233 TI - [Cytology assistants' education threatened with discontinuation "that would be a disaster"]. PMID- 3849232 TI - [People have both body and soul, and the whole is more than a sum of its parts]. PMID- 3849235 TI - [Work with abusers in Huddinge successful venture: we saved nothing but it is a step on the way. Interview by Anita Wilden]. PMID- 3849234 TI - [AIDS is no work environment risk with the correct protective measures]. PMID- 3849236 TI - [SHSTF in letter to the Minister of Health Care: important questions overlooked in report on safety]. PMID- 3849237 TI - [Marianne, nurse and research assistant--we must have great respect for patients. Interview by Jan Thomasson]. PMID- 3849238 TI - [Health University in Linkoping: comprehensive viewpoint gets generally accepted when physicians and nurses meet in education]. PMID- 3849239 TI - [Karlskoga: closed because of lack of physicians]. PMID- 3849240 TI - [Lack of long-term planning: Summer worse than many a year. Interview by Jan Thomasson]. PMID- 3849241 TI - [Dramatic exercise in mountain rescue]. PMID- 3849242 TI - [Licensing or not of assistants? The National Social Welfare Board still hesitating]. PMID- 3849243 TI - [SHSTF refutes criticism on poor technology: "education is satisfactory". Interview by Jan Thomasson]. PMID- 3849244 TI - [Red Cross and Ersta left behind when Sophiahemmet closes]. PMID- 3849245 TI - [Long-term care nurses are fed up: we want to have 2 on duty in the evening and on weekends]. PMID- 3849246 TI - [A week in Nigeria]. PMID- 3849247 TI - [How much coercion is needed in psychiatry?]. PMID- 3849248 TI - [Let us talk pensions!]. PMID- 3849249 TI - [Solveig Bergstrom, nurse administrator: a good chief for a staff which performs well. Interview by Anita Widen]. PMID- 3849250 TI - [SHSTF's lawyer writes on responsibility questions: many laws control health care]. PMID- 3849252 TI - [Swedish nurse: the fight for human rights concerns health workers the world over. Interview by Anita Widen]. PMID- 3849251 TI - [Equality in the future: can single children get men to come home?. Interview by Anita Widen]. PMID- 3849253 TI - [Spri (Health Care Planning and Rationalization Institute) project on staffing: coordination is loose]. PMID- 3849254 TI - [Gunilla says no to the new nurse's role. Interview by Inger Lernevall]. PMID- 3849255 TI - [49 out of 60 nurses give notice in protest]. PMID- 3849256 TI - [In Smaland's forest lies the refugees' first home in Sweden. Interview by Inger Lernevall]. PMID- 3849257 TI - Preceptorship over three years, it really works! (Part two). PMID- 3849258 TI - Multiple cerebral thrombosis in Fletcher factor (prekallikrein) deficiency: a case report. AB - Despite markedly prolonged activated partial thromboplastin times (APTT) patients with Fletcher factor (prekallikrein) deficiency do not clinically bleed. However, there is one reported case of myocardial infarction associated with prekallikrein deficiency. These clinical observations suggest that the contact mechanism has a minor role in normal in vivo hemostatic function. We report a further two cases of prekallikrein deficiency in Caucasian siblings. The propositus presented with multiple cerebral thrombosis. Cautious anticoagulation resulted in massive cerebral hemorrhage and death of this patient. The sibling was investigated in an attempt to establish a possible defective fibrinolytic pathway in vivo. New sensitive tests for fibrinolysis were used. These included radioimmunoassay of fibrin degradation product "D," B beta 15-42, and in vitro 125I-labelled fibrin lysis assays. The plasma half-life of prekallikrein in this patient was calculated to be 58 hr. Family studies of heterozygotes were also performed. Prekallikrein deficiency is found not to be important in normal in vivo fibrinolysis, which possibly operates via tissue or vessel wall fibrinolytic activator release. PMID- 3849260 TI - Emerging role of cephalosporins in bacterial meningitis. AB - Since 1974, ampicillin and chloramphenicol have been standard therapeutic agents for initial treatment of bacterial meningitis occurring after the newborn period. Emerging problems necessitate a reappraisal and a search for alternatives to those drugs. The problems include the following: (1) Some strains of pneumococci (between 3 and 16 percent) are relatively resistant, with minimal inhibitory concentrations between 0.1 and 1.0 microgram/ml) to penicillin G and ampicillin. Such strains are not eradicated from the cerebrospinal fluid by the usual dosages of penicillin G or ampicillin. (2) Some strains of Hemophilus influenzae type B are resistant to ampicillin and chloramphenicol by virtue of beta-lactamase and acetyltransferase production. Such strains are currently rare in the United States, but it has been predicted that they might account for as many as one quarter of the isolates within a few years. (In Barcelona, Spain, their prevalence is 18 percent.) (3) Patients with meningitis often receive phenobarbital or phenytoin. Those drugs, and others metabolized by the liver, can significantly affect the pharmacology of chloramphenicol and result in either subtherapeutic or toxic concentrations of chloramphenicol in some patients. (4) For a variety of reasons, neither ampicillin plus gentamicin nor ampicillin plus chloramphenicol is an ideal combination for infants between one and four months of age when etiologic agents include coliform bacilli and group B streptococci, as well as Hemophilus, pneumococci, and meningococci. First-generation cephalosporins were unsuitable for the treatment of meningitis because of their low concentrations in the cerebrospinal fluid in relation to the bactericidal concentrations required for the common pathogens. Several of the newer cephalosporins achieve therapeutic concentrations in the cerebrospinal fluid and, in the case of three cephalosporin derivatives (cefuroxime, cefotaxime, and moxalactam), large, controlled clinical trials have demonstrated activity comparable to that of standard therapy. Limited experience suggests that several other cephalosporins (e.g., ceftizoxime, ceftazidime) will be shown to be effective when more experience is gained. Furthermore, the use of these drugs, with the exception of moxalactam, which has insufficient activity against gram positive cocci, obviates the four problems just cited. PMID- 3849259 TI - Three-year experience with amikacin sulfate as an exclusive surgical aminoglycoside in a large acute-care hospital. AB - Aminoglycosides have important roles as perioperative adjunctive antibiotics in the surgical management of peritonitis. In the past, most surgeons have used gentamicin in combination with a drug aimed at intraperitoneal anaerobic pathogens, either clindamycin or metronidazole. Amikacin has been traditionally reserved for culture-proved infections due to gram-negative organisms resistant to gentamicin or other aminoglycosides. At the Minneapolis Veterans Administration Medical Center, a worrisome incidence of gentamicin-resistant hospital isolates led to a decision to make amikacin the exclusive, routine surgical aminoglycoside for all abdominal infections, as well as all hospital acquired infections in surgical patients involving gram-negative aerobes and requiring parenteral therapy. This report describes the resultant three-year experience with amikacin in surgical patients. Data from four research studies involving these patients suggest that exclusive amikacin use has not led to the emergence of amikacin-resistant organisms or to significant nephrotoxicity. Amikacin use in surgical patients is supported in hospital environments where gentamicin resistance is judged to be a significant clinical risk factor. PMID- 3849261 TI - What suction pressure should I use? PMID- 3849262 TI - Readers react to 'female circumcision'. PMID- 3849263 TI - Incident reports: for your eyes only? PMID- 3849264 TI - The man who wrote too much. PMID- 3849265 TI - The ups and downs of diabetic coma. PMID- 3849266 TI - To the ones left behind. PMID- 3849268 TI - Code for nurses with interpretive statements. PMID- 3849267 TI - Facts about nursing 84-85. PMID- 3849269 TI - Comparison of methicillin-resistant and methicillin-sensitive Staphylococcus aureus bacteremia. AB - Methicillin-resistant Staphylococcus aureus (MRSA) has become endemic in Detroit, accounting for 50% of bacteremias in heroin abusers. To identify the salient epidemiologic and clinical features of MRSA bacteremia, case-control studies were performed comparing 28 cases of MRSA bacteremia to 28 cases of methicillin sensitive S. aureus (MSSA) bacteremia in intravenous drug abusers. Infective endocarditis was diagnosed in 46.4% (13 of 28). In endocarditis and nonendocarditis bacteremia alike, the duration of fever, length of hospitalization, need for surgery, and mortality rates were similar. A history of recent antimicrobial therapy, especially cephalosporins, was more common in the MRSA group (p = 0.006). Complications including neurologic, renal, vascular, and musculoskeletal manifestations were more common in the MSSA endocarditis patients than MRSA endocarditis patients, although this difference was not significant. Complications related to antibiotic therapy were similar for both groups. The case-control studies indicate that MRSA and MSSA are similar in their virulence as measured by duration of hospitalization, duration of fever, complications, and mortality. PMID- 3849271 TI - Salmonella typhi carrier state 52 years after illness with typhoid fever: a case study. PMID- 3849270 TI - An outbreak of methicillin-resistant Staphylococcus aureus eradicated from a large teaching hospital. PMID- 3849272 TI - Rubella screening and vaccination follow-up by a hospital employee health office. AB - The data in the present study indicate two major points. One is that the facility under question has an unusually low rate of rubella susceptibility. The other is that the referral of seronegative employees to an outside agency for vaccination (in this case the local CHD) is not nearly as effective, with respect to employee compliance, as an in-house program. Despite the added immediate cost to the hospital for administering the vaccine, the possibility of employee-to-patient transmission of the rubella virus poses the threat of a much higher future cost. It is suggested that facilities that do not currently have an in-house rubella vaccination program should reevaluate the effectiveness of their programs. PMID- 3849273 TI - Update from the SENIC project. Hospital infection control: recent progress and opportunities under prospective payment. AB - From a survey of all U.S. hospitals in 1976 and of a random sample in 1983, we found that the intensity of infection surveillance and control activities greatly increased, and the percentage of hospitals with an infection control nurse per 250 beds increased from 22% to 57%. The percentage with a physician trained in infection control remained low (15%), and there was a drop in the percentages of hospitals doing surgical wound infection surveillance (from 90% down to 79%) and reporting surgeon-specific rates to surgeons (from 19% down to 13%). There was an increase in the percentage of hospitals with programs shown to be effective in preventing urinary tract infections, bacteremias, and pneumonias, but not surgical wound infections. The percentage of nosocomial infections being prevented nationwide appears to have increased from 6% to only 9%, whereas 32% could be prevented if all hospitals adopted the most effective programs. PMID- 3849274 TI - Infectious endocarditis caused by Actinobacillus actinomycetemcomitans. AB - Actinobacillus actinomycetemcomitans is a very uncommon cause of infectious endocarditis. The organism was first described in 1912. Thjotta and Sydnes reported its isolation in pure culture from a long standing abscess which had developed after tooth extraction. Subsequently this organism was found to be part of the normal flora, and the organism was defined as a slow growing, fastidious gram negative bacillus. Carbon dioxide is essential for the growth of A. actinomycetemcomitans. Approximately 50 cases of endocarditis due to A. actinomycetemcomitans have been reported since the first case reported in 1964. The purpose of this report is to document a case of endocarditis due to A. actinomycetemcomitans and to stress the value of the echocardiogram in the assessment of patients with endocarditis. PMID- 3849275 TI - Nurse delegates of 57 nations chart firm direction for ICN. PMID- 3849276 TI - Managing health care delivery is focus of international meeting. PMID- 3849277 TI - Nurses can spark social change, say ICN speakers. PMID- 3849278 TI - ICN adopts Styles report on regulation. PMID- 3849279 TI - World view may reveal ways to improve health care. PMID- 3849280 TI - Effect of combined human neutrophil cathepsin G and elastase on induction of secretory cell metaplasia and emphysema in hamsters, with in vitro observations on elastolysis by these enzymes. AB - To determine whether purified human neutrophil cathepsin G (Cat-G) can act by itself or in concert with purified human neutrophil elastase (HNE) in the induction of emphysema and bronchial secretory cell metaplasia (SCM), we gave golden Syrian hamsters 100 micrograms of HNE alone or in combination with either 100 or 200 micrograms of Cat-G. Other groups of animals received intratracheal doses of up to 600 micrograms of Cat-G alone. The severity of emphysema was determined from measurements of lung volumes, compliance, forced expiratory flow, and the mean linear intercept. The severity of SCM in the main airways was graded on sections stained by the alcian blue and periodic acid-Schiff reaction. The Cat G was a weak inducer of SCM; significant SCM was produced by 400 and 600 micrograms but not by 100 or 200 micrograms or 200 micrograms of Cat-G. The Cat-G (100 and 200 micrograms) did not potentiate the SCM induced by 100 micrograms of HNE. The Cat-G alone did not produce emphysema, and neither 100 nor 200 micrograms of Cat-G potentiated the mild emphysema induced by 100 micrograms of HNE. These results were not consonant with a report that Cat-G and HNE were synergistic in solubilizing human lung elastin. We therefore measured the ability of Cat-G and HNE to solubilize several radiolabeled elastins. The combination of Cat-G and HNE did not solubilize significantly more hamster lung elastin (23%) than the sum of their individual activities.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3849281 TI - Influence of combined therapy with mevinolin and interruption of bile-acid reabsorption on low density lipoproteins in heterozygous familial hypercholesterolemia. AB - Patients with heterozygous familial hypercholesterolemia have a 50% deficiency of receptors for plasma low density lipoproteins (LDL) that induces a marked increase in plasma LDL levels. Two therapeutic measures that seem to increase the synthesis of LDL receptors are interruption of the enterohepatic circulation of bile acids with either bile-acid sequestrants or the ileal-exclusion operation, and competitive inhibition of 3-hydroxy-3-methylglutaryl coenzyme A reductase with mevinolin or compactin. To determine the effectiveness of this combination and the mechanisms of lowering LDL levels, we measured turnover rates of LDL apoprotein (apo-LDL) before and during treatment with mevinolin and colestipol in eight patients with heterozygous familial hypercholesterolemia. Drug therapy reduced LDL cholesterol levels by an average of 52%; this response was due to a 40% increase in fractional catabolic rate of apo-LDL and a 26% decrease in its production rate. A similar response was obtained in two patients who had previously had an ileal-exclusion operation for severe hypercholesterolemia and who were treated with mevinolin. PMID- 3849282 TI - Freestanding centers look beyond growth of early years. PMID- 3849283 TI - Final regulations issued on "Baby Doe' and PROs. PMID- 3849284 TI - Operating room managers play an important role in purchase decisions. PMID- 3849285 TI - Newspapers and nursing. The print media image of perioperative nurses. PMID- 3849286 TI - Cutaneous melanoma. Diagnosis and surgical intervention. PMID- 3849287 TI - A personal story about malignant melanoma. The impact of one OR nurse. PMID- 3849288 TI - Quality assurance. A design for perioperative nurses. PMID- 3849289 TI - The OR educator's role. Strategies for success. PMID- 3849291 TI - The very old and frail elderly. PMID- 3849290 TI - The use of community health concepts in home health care practice. PMID- 3849292 TI - Professionalism: some personal thoughts. PMID- 3849293 TI - All through the night. PMID- 3849294 TI - The emphasis shifts to shiftwork. PMID- 3849295 TI - Malignant melanoma: the sunburnt country's dilemma. PMID- 3849296 TI - Good intentions may go up in smoke. PMID- 3849297 TI - Laxatives. Part one. PMID- 3849298 TI - Enhancing education at ward level. PMID- 3849299 TI - A recent look at obesity. PMID- 3849300 TI - The sociology of suicide. PMID- 3849301 TI - Don't get lost in a white-out. PMID- 3849302 TI - The tax man cometh. PMID- 3849304 TI - Monitoring CVP. PMID- 3849303 TI - I am brain damaged. PMID- 3849305 TI - The moments of truth amid havoc. PMID- 3849306 TI - Nurse and the law. 'Unspeakable' sensitivities. PMID- 3849307 TI - Preventing child abuse. PMID- 3849308 TI - Standards for nursing administration. A team approach to implementation. PMID- 3849309 TI - Anionic inhibitors of pancreatic and leukocyte elastase. Alkylamides of 3 carboxypropionyl- and 4-carboxybutyrylalanine peptides. AB - Low-molecular inhibitors of pancreatic and leukocyte elastase were synthesized of the general formula X-[Ala]n-A [X = Suc and Glt, A = ethylamide, n = 1, 2, 3 and 4; for n = 2 X = H and A = (2-phenylethyl)amide] and of the formula X-[Ala]3-A (X = H, Suc and Glt, A = methyl-, ethyl-, propyl-, isopropyl-, butyl-, isobutyl-, (2 phenylethyl)- and diethylamide; for A = ethylamide, X = maleyl or acetyl). Inhibition constants Ki of these pancreatic and leukocyte elastase inhibitors were determined using the chromogenic substrates Suc-[Ala]4-Nan or Glt-[Ala]4-Nan and Glt-[Ala]3-Val-Nan, respectively. The series of anionic inhibitors containing three alanine residues has the best inhibitory properties. Of the acyl groups, 4 carboxybutyryl appears most advantageous, propylamide is the most suitable of alkylamides for pancreatic elastase, and isobutylamide for leukocyte elastase. Peptides containing a free amino group show an inhibition for pancreatic elastase lower by one order than that of the corresponding acylated derivatives. Glt [Ala]3-NH-Pr is the best inhibitor of pancreatic elastase with Ki = 0.003mM and Suc-[Ala]3-NH-iBu is the best inhibitor of leukocyte elastase with Ki = 0.7mM. PMID- 3849310 TI - Basic nurse education in the A. C. T.--hospital or college based? PMID- 3849311 TI - Clinical supervision in nurse education: some parallels with teacher education. PMID- 3849312 TI - The history and politics of legislation of nursing status. PMID- 3849313 TI - The nursing curriculum and knowledge of most worth. PMID- 3849314 TI - [Method for determining kallikrein of tissue origin in blood plasma and its clinical significance]. AB - Based on a study of the kininogenase activity of the total plasma kallikrein in the presence of 3 concentrations of the soybean inhibitor trypsin (0.5, 1.0, 10.0 micrograms/ml) one can measure at a time the activity of tissue kallikrein (without specifying the source) and the activity of 3 forms of plasma kallikrein, including its adsorption on kaolin that characterizes the conformational structure of the enzyme. Examination of 10 healthy subjects and 136 patients revealed a 10 to 20-fold increase in the content of tissue kallikrein in plasma of 70% of diabetes mellitus patients and a 2.5 to 3-fold elevation in 50% of patients with chronic occupational bronchitis, and in 30% of patients suffering from chronic hepatitis. The method suggested makes it possible to have a better insight into the physiological and pathogenetic role of the kinin system and may be used for laboratory control over the treatment efficacy. PMID- 3849315 TI - The effect of 1 alpha, 25-dihydroxycholecalciferol on iron metabolism. AB - Chronic administration of hypercalcemic doses of 1 alpha, 25 dihydroxycholecalciferol to intact, vitamin-D repleted rats for 4 weeks, enhanced net intestinal absorption of iron and liver iron stores. Daily net iron and calcium absorptions were found to be significantly correlated in both control and treated rats. In duodenal loop experiments, pretreatment with 1 alpha, 25 dihydroxycholecalciferol reversed the adverse effect of high Ca/Fe ratio on iron absorption. The increased intestinal absorption of iron did not result in a change of serum iron levels nor of total iron binding capacity due to the enhanced incorporation of absorbed iron into liver ferritin. The curve of uptake of 59Fe into circulating red cells of treated rats suggested retarded release of the isotope from stores. The hypothesis is advanced that the systemic metabolic defect (tissue hypoxia, raised erythropoietin levels) produced by 1 alpha, 25 dihydroxycholecalciferol is responsible for the disruption of the physiological coordination between iron stores and intestinal absorption. PMID- 3849316 TI - Glucose-6-phosphate dehydrogenase (G6PD) Iserlohn and G6PD Regensburg: two new severe enzyme defects in German families. AB - Two new inheritable variants of glucose-6-phosphate dehydrogenase have been found in two unrelated German families. Patients with one variant (G6PD Iserlohn, also referred to as G6PD I) suffered from intermittent hemolytic crises caused by fava beans; patients with the other variant (G6PD Regensburg, G6PD II) disclosed chronic nonspherocytic hemolytic anemia aggravated by drug treatment. Due to their unusual biochemical characteristics, the new variants were designated G6PD Iserlohn and G6PD Regensburg. Both variants showed a reduction of enzyme activity to about 6% of the normal in erythrocytes, normal electrophoretic mobility, increased affinity for glucose-6-phosphate, a reduced affinity for NADP and a pH optimum in the neutral region (7.0 and 7.5). G6PD Iserlohn had a decreased affinity for the inhibitor NADPH; G6PD Regensburg had a normal inhibitor constant. Deamino NADP was utilized at an increased rate by G6PD Regensburg. G6PD Iserlohn was thermostable, G6PD Regensburg mildly instable. G6PD activity in leukocytes was normal in G6PD Iserlohn and reduced to the same degree as in erythrocytets in G6PD Regensburg. The cause of the decreased activity of G6PD Iserlohn appears to be in vivo instability; in G6PD Regensburg further mechanisms might include reduced specific activity or reduced synthesis of the variant enzyme. PMID- 3849317 TI - Platelet-adjusted IFN dosage in the treatment of advanced hairy cell leukemia. AB - It has been demonstrated that hairy cell leukemia (HCL) can be efficiently treated by various preparations of alpha interferons (IFN). Nevertheless, there are several open questions, such as the route, mode and dosage of IFN application. These variables of IFN treatment may be critical since a myelosuppressive effect of IFN, which is commonly seen in the initial phase of treatment, can result in further deterioration of the already impaired platelet production in advanced HCL. The present study shows that serious side effects can be avoided and the flu-like syndromes described by others almost completely reduced by s.c. application of IFN via a portable pump during a daily 8 h period. IFN is initially given five times a week and the daily dose is adjusted according to the actual platelet count. The efficiency controls show that the increase of platelets in the peripheral blood, which is most critical in advanced HCL, may be seen earlier by this than by other protocols, which usually recommend higher daily doses of IFN and only three instead of five weekly applications. PMID- 3849319 TI - Annual congress of the Austrian and German Societies of Hematology and Oncology. Vienna, October 6-9, 1985. PMID- 3849318 TI - Cellular cytotoxicity mediated by granule-depleted neutrophil cytoplasts. AB - Neutrophil-derived nucleus-and granule-free cytoplasts, consisting of cytosol enclosed by an intact plasma membrane, were able to destroy 51Cr-labelled ox red blood cells (ORBC) in the presence of phorbol myristate acetate (PMA). The slope of the target cell lysis vs the log of the cytoplast number was similar to that observed with neutrophils as effector cells. Nevertheless, a number of cytoplasts 60-80 times higher than that of neutrophils was required to obtain a common level of cytotoxicity. The ability of cytoplasts and neutrophils to lyse ORBC was completely abolished by catalase and unaffected by superoxide dismutase and mannitol, suggesting the involvement of hydrogen peroxide in the target cell damage. Addition of myeloperoxidase (MPO) to cytoplasts increased lysis. The MPO lysis by cytoplasts, except when experiments were carried out in the presence of MPO. The results indicate that neutrophil cytosol and plasma membrane represent the basic requirement for the PMA-dependent cytolytic process, whereas MPO behaves as a device to amplify lysis. PMID- 3849320 TI - RN Days puts zip into learning. PMID- 3849321 TI - Titling and credentialings of nursing personnel. PMID- 3849322 TI - Biologic health hazards: AIDS and hepatitis B. PMID- 3849323 TI - Working poor lack medical assistance. PMID- 3849324 TI - Three thousand nurses attend international congress. PMID- 3849325 TI - The staff nurse as peer educator--preceptorship on the unit. PMID- 3849326 TI - Computerization--the experts say it's working. Interview by Leo Charbonneau. PMID- 3849327 TI - Equal pay for work of equal value. PMID- 3849328 TI - Smoking or health: how long can nurses ignore the facts? PMID- 3849330 TI - The nurse as a generator of ideas. Can you choose a good research question? PMID- 3849329 TI - Primary nursing: a program for change. PMID- 3849331 TI - Organ procurement in Canada. PMID- 3849332 TI - Targets for infection: institutionalized elderly. PMID- 3849333 TI - The locking nail. PMID- 3849334 TI - Wound care. PMID- 3849335 TI - Hope and wholeness. A true story based on one woman's experience with cancer. PMID- 3849336 TI - The birthing process: where should the emphasis be? PMID- 3849337 TI - Insights on how to quit smoking: a survey of patients with lung cancer. PMID- 3849338 TI - Cancer, anxiety, and quality of life. PMID- 3849339 TI - Oncology clients' affective states and their nurses' expectations of clients' affective states. PMID- 3849340 TI - Helping women to choose breast cancer treatment alternatives. PMID- 3849341 TI - The primary, secondary, and tertiary nursing interventions of lymphedema. PMID- 3849342 TI - Cancer prevention and detection. Lung cancer. Programmed instruction. PMID- 3849343 TI - Malpractice crisis continues--part two. PMID- 3849344 TI - Reversibility of cyclization of the Tetrahymena rRNA intervening sequence: implication for the mechanism of splice site choice. AB - The Tetrahymena rRNA intervening sequence (IVS) excises itself from the pre-rRNA and then mediates its own cyclization. We now find that certain di- and trinucleotides with free 3' hydroxyl groups reopen the circular IVS at the cyclization junction, producing a linear molecule with the oligonucleotide covalently attached to its 5' end. This linear molecule recyclizes with release of the added oligonucleotide. Thus the IVS RNA, like an enzyme, lowers the activation energy for both forward and reverse cleavage-ligation reactions. Certain combinations of pyrimidines are required for circle reopening. The most reactive oligonucleotide is UCU. This sequence resembles those preceding the major and minor cyclization sites in the linear IVS RNA (UUU and CCU) and the 5' splice site in the pre-rRNA (UCU). We propose that an oligopyrimidine binding site within the IVS binds the sequences upstream of each of these target sites for cleavage-ligation. PMID- 3849345 TI - [Gestrinone in the treatment of endometriosis]. PMID- 3849346 TI - [Early signs of pulmonary encephalopathy and patient care]. PMID- 3849347 TI - [Nursing of patients with tuberculous meningitis]. PMID- 3849348 TI - [Status of nursing in rehabilitation medicine]. PMID- 3849349 TI - [Clinical nursing of patients with heart failure treated by vasodilators]. PMID- 3849350 TI - [Traditional Chinese medical care of patients with chronic nephritis]. PMID- 3849351 TI - [How to write nursing records]. PMID- 3849352 TI - [Nursing in the surgery of omental transplants to the brain]. PMID- 3849353 TI - [Observations on patients' conditions after heart surgery]. PMID- 3849354 TI - [Management of the respiratory tract after brain injury]. PMID- 3849355 TI - [Emergency care of traumatic shock patients]. PMID- 3849356 TI - [Nursing of pregnant women with severe hepatitis]. PMID- 3849357 TI - [Care of advanced breast cancer patients treated by arterial intubation chemotherapy]. PMID- 3849358 TI - [Nursing of gynecological patients treated by chemotherapy]. PMID- 3849359 TI - [Symptoms of children during venous infusions]. PMID- 3849360 TI - [Nursing of 98 children with toxic shock]. PMID- 3849361 TI - [Avoidance of seasonal pyrogen reactions]. PMID- 3849363 TI - Mammography today. PMID- 3849362 TI - Influence of oral contraceptives and pregnancy on constituents of the kallikrein kininogen system in plasma. AB - We measured kininogens of low and high molecular mass along with prokallikrein activity in plasma of women with a normal menstrual cycle. We observed no difference between results for the follicular and luteal phases. We assayed the same constituents in women who were taking oral contraceptives (combined estroprogestative) and found that activity of prokallikrein and concentrations of low- and high-molecular-mass kininogens were significantly increased. Lastly, we studied the components of the kallikrein-kininogen system during pregnancy. We also observed a marked increase in their concentrations in plasma, despite a decrease in total proteins. Specifically, prokallikrein and kininogens increase continuously with gestational age, reaching their maxima around the eighth month of pregnancy. At that time, more than 50% of observed results fall outside the normal reference interval. Our observations are even more striking when prokallikrein and kininogens are expressed in units per gram of total proteins, to account for the hemodilution. After delivery, the concentrations of prokallikrein and low- and high-molecular-mass kininogens decline promptly, returning to normal within three days. PMID- 3849364 TI - Microcalcifications in the breast--a blessing or a curse? A critical review. AB - 70-90% of the biopsies performed on account of microcalcifications on mammograms are unnecessary. Most of the time descriptions of diagnostic criteria are irrelevant and vague. It is confusing, that lobular carcinoma in situ is considered to be a real cancer, as happens frequently, and that histologically dissimilar ductal carcinomas and benign abnormalities of different origin are simply considered as 'malignant' or 'benign' and subsequently reported as such. This opinion results from an analysis of articles on microcalcifications published between 1951 and 1984. It is the author's opinion that the number of needless biopsies can be reduced drastically. PMID- 3849365 TI - Basic principles of mammographic diagnosis. AB - The only hope we have at present to control breast cancer is to diagnose and treat it at the earliest possible stage. It has already been convincingly demonstrated that properly performed mammography interpreted by a well-trained mammographer can detect breast cancer before it has grown to a stage at which it is incurable. But in order to be an effective diagnostic method mammography must be performed at a very high level of quality. This article describes the radiologist's role in building up and taking the responsibility for the observation of details in screen/film mammography. The basic principles of the mammographic interpretation are specified. PMID- 3849366 TI - Computerized tomography of breast cancer and regional lymph nodes. AB - Technique, advantages and disadvantages of computerized tomographic (CT) mammography are described in various pre- and postoperative conditions. The value of CT mammography is discussed. PMID- 3849367 TI - The role of specimen x-ray in the diagnosis of breast cancer. AB - Specimen radiography is a very useful tool in the pathologic study of breast cancer in various surgical specimens. The application of this technique in the pathologic examination of clinically occult lesions is mandatory. In the pathologic study of segmentectomy specimens, the specimen x-ray provides a great help in assessing both extent and multifocality of the tumor and in evaluating the completeness of the surgical excision. PMID- 3849369 TI - Symposium on laser techniques. PMID- 3849368 TI - Reliability of mammographic reporting. Correlation of mammographic interpretation and diagnostic levels of confidence. AB - In order to assess additional statements in mammographic reports, with view to the suitability of breasts to interpretation, and to analyze the effect of statements (such as well, reasonably, moderately or poorly suited to interpretation) on the reliability of the reports, a study was made of 938 consecutive patients. The accuracy of these statements was correlated in 151 of these cases with proven histology. One would expect that errors in film interpretation would increase with decreasing suitability of the mammograms to interpretation, but we did not succeed in demonstrating this phenomenon. Diagnostic levels of confidence did not correlate significantly with each statement. However, the predictive value of diagnoses qualitatively labelled in scales of ascending suspicion, such as benign, malignancy uncertain, suspicion of malignancy or characteristic for malignancy, can serve as an important marker to a better understanding of the report. PMID- 3849370 TI - Laser-tissue interactions. AB - The optimal surgical use of laser devices requires an understanding of the interaction mechanisms of laser radiation with biologic tissue. This article will review the physical and biologic factors that have an impact on surgical applications of the laser. It is hoped that this review can lead to improved surgical applications and technique. PMID- 3849371 TI - Neodymium:YAG laser therapy for malignant and benign endobronchial obstructions. AB - Because of its specific wavelength (1064 nm), the Nd:YAG laser can be transmitted through fiberoptics and has very specific characteristics of a high-scattering effect in living tissues, permitting in-depth penetration of energy and coagulation of cellular protein. Among other topics, this article reviews the indications for and complications of endoscopic Nd:YAG therapy. PMID- 3849372 TI - Metabolism in marine flatfish--III. Measurement of elastase activity in the digestive tract of Dover sole (Solea solea L.). AB - A critical assessment of different methods for measuring elastase activity in crude preparations has been made using whole intestinal homogenates of Dover sole. The use of the natural substrate elastin or its dyed derivatives gave optimal pH values in the alkaline region (pH 9.4-9.8) whereas artificial substrates showed optimal hydrolysis nearer neutrality in the region pH 8.1-8.2. Exoproteases may interfere with certain assay procedures. The properties of Dover sole elastase have been further investigated using chromatographic techniques which indicated that the main elastase activity has a molecular weight of approximately 19,500 and an isoelectric point in the region of pH 5.7. PMID- 3849373 TI - The clinical biochemistry laboratory computer system and result entry: validation of analytical results. AB - We describe an array of checking routines that can aid laboratory staff in detecting possible errors in results being entered into a laboratory computer. A single result is checked at the worksheet stage for its numeric format and for its numeric status by comparison with appropriate reference ranges, and action and hazard limits. If a previous result exists then the present result can be compared with it (delta checking). Laboratory documentation of abnormal results is important and we describe three types; worksheet, exception report(s) and histograms of results. The clinical reports leaving the laboratory should flag abnormal results so that the clinician is prompted to examine, and question if necessary, results which are extreme or have changed significantly since the last analysis. Effective error detection requires cooperation between the laboratory and clinical units. PMID- 3849374 TI - Automatic classification of visual evoked responses. AB - An automatic method performing selective averaging of visual evoked potentials depending on the state of the EEG background activity is described. The method is based on adaptive segmentation of the EEG signal and on fuzzy clustering. A simulation example, extracting two different square pulses from the background activity, is given, as well as an example averaging two types of visual evoked potentials from the background EEG signal. PMID- 3849375 TI - A mathematical model and computer program for adriamycin distribution and elimination. AB - A mathematical physiological flow model is described for the distribution and elimination of adriamycin in the rat. The model includes the volume or mass of, and blood flow to the following tissues: heart, plasma, muscle, skin, kidney, bone marrow, gut, liver and bile. A compartment is also included for tight or almost irreversible binding which occurs with this drug. The program was written in FORTRAN to compute the concentration of drug in each tissue as a function of time after bolus injection or short term infusion. The computed data is printed on a line printer and recorded on disk for use in a SAS program GPLOT to obtain precision plots. PMID- 3849376 TI - Automated data acquisition and analysis of neural evoked potentials. AB - A software system to collect, analyze and store trains of neural evoked potentials is presented. Real-time waveform capture permits sampling of a variable-duration data window of 6 to 399.6 ms with a sample delay accurately adjustable up to 1 001 ms (20 microseconds resolution). The digitized representation of each waveform is stored for individual analysis. Off-line processing determines 17 parameters of each waveform, including an arrow-selected amplitude and time. Individual processing of waveforms preserves all degrees of freedom for statistical analysis across waveforms. Ensemble averages may optionally be formed from the individual waveforms with processing performed on the averaged responses. The software provides MENU-selectable support functions including stimulus-to-artifact timing, storage and retrieval of data and calculated parameters, digital display of waveforms, data calibration and gain modification, table referenced data editing, file management, simple statistics, hardcopy output, and optional database interfacing with output formatted for compatibility with a statistics package (SAS). PMID- 3849377 TI - Localization of current dipole within a sphere by magnetic measurements. AB - The principal objective of this study is the development of computer programs to determine the location and strength of neural electric activity within the brain from noninvasive magnetic field measurements at the surface of the head. This report presents theoretical calculations and computer programs derived from the method described by Williamson and Kaufman to determine the depth and strength of a current dipole in a sphere. From the location of the magnetic field radial component extremes, Br maximum and Br minimum, the orientation and location of the current dipole can be determined. The accuracy of the solution is dependent on precise location of of the magnetic field extremes as measured from the surface of a sphere, e.g. the head. To validate the program for locating the dipole, theoretical calculations and computer programs related to the total magnetic field vector resulting from a hypothetical current source within a homogeneous sphere were generated. The errors in calculations of the current dipole depth and strength are presented. PMID- 3849378 TI - A report generator package for routine laboratory tests in a hospital cardiology department. AB - A simple report generating package is described. The package is designed for hospital computing personnel who wish to develop fast, easy access, easy-to-use report generating programs for use by non-computer specialists. Use of the system is illustrated by examples from three sections within a hospital cardiology department: nuclear cardiology, M-mode echocardiography and reporting of 24-hour ambulatory electrocardiogram tapes. PMID- 3849379 TI - A simple algorithm for the solution of the multiple dosing problem. AB - A system theoretical approach to the general multiple dosing problem is discussed [1], which is in turn reduced to a classical parameter optimization problem. An efficient numerical algorithm based on the cyclic coordinate search method to solve the latter is explained. A flexible and user-friendly program written in standard FORTRAN which is suitable for this problem is introduced. Finally, the problem is applied to the dopaminergic substitution problem in Parkinson's disease, and the necessary input data as well as the resulting output is displayed in a sample run. PMID- 3849380 TI - The MISCAN simulation program for the evaluation of screening for disease. AB - The computer program MISCAN is developed for use in evaluation of mass screening for disease. The program uses Monte Carlo simulation. It produces output on the results of screening projects and on the effects of screening on morbidity and mortality on the individual and population level. The calculations are based on models of the natural history of the disease and of the impact of screening on the natural history. The approach is such that considerable flexibility exists in specifying the structure of the model and its parameters. The program consists of two parts. The DISEASE part can be used for simulating the epidemiology of the disease when no screening is taking place; it requires input on the population and on the disease process. The SCREENING part is to be used in combination with the DISEASE part. It is intended for simulation of the results and effects of a screening project. It requires input on the properties of the screening tests, the consequences of early detection by screening, and the policy (ages and intervals between screens) of the project. MISCAN can be used for finding model assumptions regarding the disease process and the impact of screening that give a good explanation of the observed results of a screening project. Such an analysis proceeds in two steps. First, MISCAN is used to calculate simulated results of the project, based on specific assumptions. Next, these results are tested against the observed results, in order to assess the acceptability of the assumptions. MISCAN can also be used for optimization of the screening policy by simulating the cost and benefit components of a large number of different screening policies. PMID- 3849381 TI - Sequential colour mapping system of brain potentials. AB - We present a colour mapping system for the visualization of both the spatial scalp distribution and the temporal evolution of brain potentials. The system is applicable to recordings of auditory, visual and somatosensory potentials. It uses a Tektronix 4113 colour terminal connected to a Solar 16 (SEMS) mini computer. The brain potentials are recorded on up to 16 scalp electrodes. The gain and the baseline are corrected separately on each channel. At each point of the scalp the potential is reconstructed by a linear interpolation of the measured potentials of the four nearest electrodes. Simultaneously n2 (1 less than n less than 8) colour maps can be presented on the screen. This allows the study of the temporal evolution of full scalp evoked potentials. The user chooses the two extreme latencies defining the time window to be explored and the latencies of the maps are regularly time-spaced within this window. In a typical case, in which four maps are desired, the latencies of the maps can be chosen independently. The 16-colour palette is predetermined but the user has three possibilities to establish the correspondence between the electrical potential and the colours. Examples are shown in the visual and somatosensory stimulation modalities. The advantages and limitations of such a representation are discussed. PMID- 3849382 TI - A computer program for the simulation of colony-like proliferation of fibroblasts and their cell cycle behavior. AB - Several models have been constructed which describe the population dynamics of fibroblast cultures by means of their collective behavior. In contrast, we present here the first example of a program which also allows a topographical simulation of colony-like growth. Starting with one cell, each clonal population consists of single 'intelligent' cells running through a fictive cell cycle. Within the cycle several parameters (position of daughter cells, duration of cycle, etc.) are randomly chosen within given intervals, thus leading to an extremely large number of different clones which can be simulated. Therefore, an experimental-like procedure is possible. Although not being a true reflection of the cell cycle, the model is in good accordance with the clonal growth of fibroblasts. Our model has several aims, for example the application to prenatal diagnosis and the appearance of aberrant clones (in vivo versus in vitro occurrence of chromosome abnormalities in amniotic fluid cell clones). However, it seems to be well suited to check theories related to cellular senescence in vitro, and in particular the commitment theory. PMID- 3849383 TI - Questionnaire: warts and all. PMID- 3849384 TI - Feet fit for walking. PMID- 3849385 TI - Leg ulcers: cheaper in the long run. PMID- 3849386 TI - Leg ulcers: cleaning v healing. PMID- 3849387 TI - Postnatal depression. Exposing the blues... PMID- 3849388 TI - Postnatal depression. Exposing the blues and treating them. PMID- 3849390 TI - Drug compatibility chart. PMID- 3849389 TI - Mystery arrhythmia. PMID- 3849391 TI - Chronic pulmonary disease in the neonate. PMID- 3849392 TI - Pathophysiology of renal failure. PMID- 3849393 TI - Bedside insertion of ICP monitoring devices. PMID- 3849395 TI - Procedure for left atrial catheter insertion. PMID- 3849394 TI - Drug fever: is your patient's fever drug-related? PMID- 3849396 TI - Management of acetaminophen overdose. PMID- 3849398 TI - Intra-aortic balloon pump therapy. PMID- 3849397 TI - Stress and coping in families of the critically ill. PMID- 3849400 TI - Arrhythmia quiz: sick sinus syndrome. PMID- 3849399 TI - Discharge planning: pediatric case study of Jeune's asphyxiating thoracic dystrophy. PMID- 3849401 TI - Hemodynamic assessment. PMID- 3849402 TI - Documenting cardiopulmonary arrest. PMID- 3849403 TI - Acyclovir: a recently developed anti-herpes agent. PMID- 3849404 TI - Retinoids, differentiation and disease. PMID- 3849406 TI - Inhibition by retinoids of neoplastic transformation in vitro: cellular and biochemical mechanisms. AB - We have demonstrated that non-toxic concentrations of retinoids can cause a dose dependent inhibition of 3-methylcholanthrene-induced transformation of C3H/10T1/2 cells. On removal of the retinoid, transformed foci appear after a latent period of about four weeks at the same frequency as observed in controls treated with carcinogen only. Reasoning that this activity is compatible with the stabilization of the carcinogen-initiated state, we have succeeded in isolating from carcinogen-treated cultures a cell line which in the presence of retinyl acetate is similar to the parental 10T1/2 cells, but without retinyl acetate transforms at a high frequency after a latent period of about four weeks. Retinyl acetate treatment of this cell line (INIT/10T1/2) and the parental 10T1/2 cells induces an ultra-normal phenotype. In retinoid-deprived INIT/10T1/2 cells, the first sign of transformation (an increased thymidine-labelling index) occurs 16 days after retinyl acetate removal. We have detected by two-dimensional electrophoresis that concomitant with this there is an increase in phosphorylation of a protein of Mr 34 000 (34K) which may be associated with the cytoskeleton. This phosphoprotein has been found in all transformed lines examined. A second phosphoprotein, of about 38K, has also been detected in transformed cells. Retinyl acetate treatment of transformed cells alters the isoelectric point of this protein, a change compatible with decreased phosphorylation. Alkali-resistant phosphorylation, presumably on tyrosine, has been found on a second 34K protein of transformed cells. Retinyl acetate treatment specifically decreases this phosphorylation. Mechanisms for the altered tyrosine phosphorylation induced by retinyl acetate are as yet unresolved, but the decrease could be due to altered levels of substrate, kinase or phosphorylase. In view of the apparent role of tyrosine kinases as mediators of growth factors and as oncogene products, we consider the activity of retinoids as modulators of tyrosine phosphorylation to be of great potential significance. PMID- 3849405 TI - Modulation of carcinogenesis in the urinary bladder by retinoids. AB - Bladder cancer has a 70% recurrence rate within five years and a high associated mortality. It commonly occurs in one or both of two predominant growth/behaviour patterns: either well-differentiated, relatively benign exophytic papillary lesions, or flat, poorly differentiated invasive carcinoma usually arising from carcinoma-in-situ. We have used the F344 rat treated with N-butyl-N-(4 hydroxybutyl)nitrosamine (BBN) as a model for the papillary disease, and the BBN treated B6D2F1 mouse for flat, invasive bladder carcinoma. In the rat, carcinogenesis is a multistage process and several retinoids will delay or even halt the development of bladder cancer. Inhibition of carcinogenesis is not complete, but there is a consistent reduction in the time-related incidence of papillomas and carcinomas and a concomitant improvement in the overall differentiation of the urothelium. In the BBN/mouse model, retinoids also have anticarcinogenic activity but interpretation of the results is more complicated. Unlike the F344 rat, the B6D2F1 mouse has a non-uniform response to BBN; not all mice develop bladder cancer even after treatment with very high doses of BBN and in those that do, more than one mechanism of carcinogenesis may be involved. Individual retinoids differ markedly in their ability to modulate bladder carcinogenesis in rodents; the behaviour of one analogue cannot be predicted automatically from data obtained with another. Combined data from rodent trials in this and other laboratories have identified N-(4-hydroxyphenyl)retinamide (HPR) as the most anticarcinogenic retinoid tested so far for the rodent bladder. It is also less toxic in rodents and better tolerated in humans than either 13 cis-retinoic acid or etretinate, two retinoids currently used in dermatological practice. A prophylactic chemopreventive trial of HPR in bladder cancer patients starting in 1985 will be centered on the Middlesex Hospital, London. PMID- 3849407 TI - Abortion: medical progress and social implications. PMID- 3849408 TI - Some aspects of late abortion for congenital abnormality. AB - Present methods of prenatal diagnosis are not applicable until at least 16 weeks of gestation. Most abortions for suspected congenital abnormality are therefore usually done in the second trimester of pregnancy. Abortions at over 20 weeks of gestation account for about 0.8% of all abortions for residents of England and Wales, but the operations are unpleasant and carry a significant morbidity. Screening the population for neural tube defects has led to a marked reduction in the recorded incidence of infants born with the condition. A survey in the Northern Region of England, with official statistics from Scotland, shows that in spite of the contribution made by selective abortion, there appears to be a genuine reduction in the population incidence of neural tube defect in Scotland. The diagnosis of chromosomal abnormalities, and to a lesser extent of neural tube defects, depends on amniocentesis and there is evidence of more delay in initiating amniocentesis for neural tube defect than for chromosomal tests, probably because of administrative delay associated with the use of serum alphafetoprotein screening. The possible impact of proposals to change the law concerning the limit of viability of the fetus on the practice of late abortion for congenital abnormality is examined. Abortion for congenital abnormality should be permitted after 22 weeks' gestation. PMID- 3849409 TI - Live-born infants of 24 to 28 weeks' gestation: survival and sequelae at two years of age. AB - The survival rate of infants born alive between 24 and 28 weeks of gestation has increased significantly in this tertiary care centre, from about 9% in the first cohort studied (1966-1970), to 19.5% in the second cohort (1971-1974) and 50.3% in the third cohort (1977-1982); the borderline of practical viability decreased from 27 to 24 weeks over the years of the study. The number of mothers with a history of prior termination of pregnancy increased about sixfold from the second to the third cohorts but the rate of premature births increased by only 50%. The augmented survival rate was accompanied by an increase in the prevalence and total number of children with cerebral palsy, but bilateral blindness due to retinopathy of prematurity and severe sensorineural deafness were reduced. When 96% of children in the third cohort were assessed at two years of age. 13% had severe handicaps, 59% were considered normal and in 24% some handicap was suspected. The serious handicap rate was 28% for children born at 24-26 weeks compared with 8.5% for those born at 27-28 weeks of gestation. PMID- 3849410 TI - Follow-up study of children born to women denied abortion. AB - Two hundred and twenty children born in Prague in 1961-63, whose mothers had applied twice for abortion and were refused twice, were matched with children born from accepted pregnancies. The findings when the children were about nine years of age revealed some important differences unfavourable to 'unwanted children'. Boys were significantly more afflicted than girls. Both groups were examined after a further six years. Differences in school achievement, in ratings of the child's personality and in parental attitudes were more pronounced than before. The third follow-up project is under way now, with the initially unwanted children and the control group in their early 20s. Detailed examinations are being made in families that already have children, i.e. children of 'unwanted children'. PMID- 3849411 TI - Post-abortion and post-partum psychiatric hospitalization. AB - Confusion persists regarding relative psychological risks associated with term deliveries and induced abortions. One reason for the scarcity of comparative findings is the lack of epidemiological data on post-abortion and post-partum admissions to psychiatric hospital. While such admissions are not separately tracked in United States health statistics, they are measurable events, reflective of severe psychological stress associated in time with delivery and abortion, and probably less subject to diverse interpretation than are individual consultations with clinical practitioners in their offices. The paper reviews what is known from published international research about post-abortion and post partum admissions to psychiatric hospitals and discusses comparative findings obtained from computer linkages of Danish national registers. Admissions to psychiatric hospital were tracked for a three-month period after either delivery or abortion for all women under age 50 and then compared with the three-month admission rate to psychiatric hospitals for all Danish women of similar age. The major finding is that for never-married and currently married women, the post pregnancy-related risk of admission is about the same-around 12 per 10 000 abortions or deliveries. Higher psychiatric admission rates were noted for separated, divorced and widowed women having abortions or carrying to term. PMID- 3849412 TI - The effects of abortion on a marriage. AB - A small proportion of patients seeking help for their troubled marriages at the Institute of Marital Studies speak of a past abortion. This paper draws on their experience of the event and its aftermath. Their identities have been concealed. Sometimes, apparently having been unable to mourn the loss of the child at the time of the abortion, they show a delayed grief reaction. It may be mild but persistent, or it may occur in more extreme form only many years later when a subsequent loss of a different nature triggers off repressed and conflicting feelings relating to the earlier loss of the baby. The therapeutic works needs to concern itself with that earlier loss. Sometimes the husbands are more affected than the wives. Husbands and fathers are much neglected in the British follow-up studies of abortion, except (rarely) through the subjective reports of the women. It is suggested that, when a relationship exists beyond the act of intercourse, the fathers would benefit from as much or more attention from counsellors than the women, for whom the disturbance occasioned by the actual experience of abortion may be mitigated by the sympathetic care of hospital staff. PMID- 3849413 TI - Contragestion by antiprogestin: a new approach to human fertility control. AB - The steroidal derivative RU 486 (17 beta-hydroxy-11 beta-(4-dimethylaminophenyl 1)-17 alpha (prop-1-ynyl)-estra-4,9-dien-3-one) is the first potent antiprogestin. Acting reversibly at the molecular level of receptor binding, it interrupts progesterone action definitively if the target cell dynamics are irreversibly disrupted. Its preferred target cells are those of the uterine decidualized mucosa and uterine cervix, and increased myometrial contractility facilitates the termination of pregnancy. Luteolysis is secondary to the decrease in chorionic gonadotropin, itself brought about by secondary alteration or detachment of the trophoblast. Clinical results so far indicate that RU 486 can be a very efficient and safe contragestive agent, especially for the medical termination of early pregnancy or as a postcoital menses inducer or menstrual regulator. Incomplete expulsion is sometimes noted at present when RU 486 is given alone but this may not happen when efficient form(s) of administration are used and/or when uterotonics are added. When a small amount of prostaglandin (which by itself would be inefficient) is given at the end of treatment with RU 486, the results are highly satisfactory. The antiprogestin RU 486 does not expose women to hormones continuously. Based on a dual concept, physiological and molecular, it may be typical of the second generation of agents required to achieve safe and effective control of human fertility. PMID- 3849414 TI - Abortion services in Slovenia. PMID- 3849415 TI - Legal abortion: limits and contributions to human life. AB - The traditional approach to abortion has been to regard it as disposing of human life, even when it is justifiable to induce abortion in accordance with legal and ethical principles. Contraception as distinct from abortion has never been so treated even though, in some respects, the biological processes involved in contraception and abortion raise similar issues. This is particularly so when contraception is by an intrauterine device or a postcoital technique which can prevent implantation rather than fertilization. Modern evidence shows that abortion is not only a loss of human life, but--paradoxically--is also a biological condition of human life. An unavoidably high rate of spontaneous loss of embryos has been shown to arise in the course of natural reproduction, due either to failure of implantation or to loss, such as the 'vanishing twin' of children born in single births. More common than the vanishing twin is spontaneous loss after implantation. Planned embryonic loss in artificial reproduction duplicates rather than defies nature. Further, sociological perceptions indicate that the availability of reliable prenatal diagnosis, especially of genetic conditions, and of induced abortion to terminate dysgenic life, may free couples to conceive and bear healthy children they would otherwise not have conceived. Moreover, prenatal diagnosis, for example by amniocentesis, may increasingly permit maternal or fetal treatment and so encourage the continuation of a pregnancy which might otherwise have been terminated. PMID- 3849416 TI - Viability and the moral status of the fetus. AB - The viability of the fetus has played a significant part in the framing of abortion legislation, but the use of viability as a criterion represents a compromise which is conceptually unclear and which fails to satisfy either side in the abortion debate. Both conservative and liberal views on abortion regard fetal development as morally irrelevant. For the moderate (or gradualist) view some point in the development must be found which indicates a change in the moral status of the fetus. Since viability changes according to available techniques for neonatal care it cannot be the criterion. Alternative criteria are surveyed and it is concluded that the onset of sensation is a significant transition point beyond which abortion and infanticide cannot be morally distinguished. It is suggested that either legislation should be amended to prohibit abortion after 18 to 20 weeks, or abortion to full term should be permitted and the possibility of legislation for infanticide be envisaged. PMID- 3849417 TI - Politics and abortion. AB - The legalization of abortion in the United States by the Supreme Court in 1973 bypassed the political process in the majority of the states. Since then, however, political controversy and agitation in relation to abortion has become nationwide. From largely Catholic-based opposition, it has grown to encompass religious fundamentalists and to be a major part of the New Right's agenda. Abortion is now, pro and con, part of the platform of both political parties. The sweeping nature of the Supreme Court's decisions leaves the opposition with very little room to restrict abortion, short of overturning the decisions through a constitutional amendment. Such an amendment requires a two-thirds majority of Congress and passage is unlikely. However, funding bans on scores of federal programmes have succeeded in restricting access to abortion for the poor, the young and minorities. These restrictions are part of a long-term strategy to educate the public as to the evils of abortion with the aim of making it illegal again, either through the adoption of a constitutional amendment or by obtaining a reversal by a hoped-for change in membership of the Supreme Court. PMID- 3849418 TI - Medical progress and the social implications of abortion: summing-up. PMID- 3849419 TI - Abortion in Thailand and Sweden: health services and short-term consequences. AB - In Thailand, where abortion is still illegal, abortion services (health services) outside Bangkok, and outside hospitals or clinics, are provided by non-physician practitioners. In the studies reported here, those practitioners were interviewed in 1978 and 1981 about their methods and the characteristics of their clients. The first study revealed that massage is the method most widely used by rural practitioners and that uterine injection with different solutions comes second. The second study was in agreement with these findings. The health consequences of these induced abortions were studied by interviewing the clients of the rural practitioners in 1980 and 1981. In Sweden, where abortion has been legal for quite a long time, all women who need an abortion have access to safe and convenient health services throughout the country. PMID- 3849420 TI - Sequelae of induced abortion. AB - In the long-term prospective controlled study reported here, 1509 general practitioners and 795 gynaecologists in England, Scotland and Wales are cooperating in providing information on the sequelae of abortion, especially on the problems of later pregnancies, subfertility and all reported morbidity, in particular psychiatric illness. Morbidity within 21 days after induced abortion, and considered to be related to induced abortion, was found in 10% of 6105 women who had an induced abortion in their index pregnancy, and there were major complications in 2.1%. The main factors affecting morbidity were the place of operation, gestation at termination, the method of termination, sterilization at the time of operation, and smoking habits. Several differences between National Health Service and private sector operations were found which could affect the morbidity rates. Possible means of reducing early morbidity are discussed. The outcome of the first post-index pregnancy in 745 women whose index pregnancy had ended in induced abortion and in 1339 controls was also compared. There was no statistically significant difference between cases and controls. Further analysis of a large number of pregnancies is required to permit confident interpretation of these observations. PMID- 3849421 TI - [Stereochemical modeling of ribosomal translocation]. PMID- 3849423 TI - Temocillin sensitivity of Enterobacteriaceae species resistant to cefotaxime. AB - The in vitro activity of temocillin, cefotaxime, aztreonam and ceftazidime was tested against selected cefotaxime-resistant isolates (43 Enterobacter species, 37 Serratia marcescens, 16 Morganella morganii, 8 Klebsiella species) and cefotaxime-susceptible strains of the same species. Cross-resistance with a high degree of correlation was observed between cefotaxime and aztreonam or ceftazidime, but not between cefotaxime and temocillin. PMID- 3849422 TI - Influence of temocillin on colonisation resistance and consequences for therapy. AB - The influence of temocillin on the colonisation resistance of the digestive tract was studied in mice, with doses ranging from 0.062 to 1 mg/day administered orally and 0.25 to 4 mg/day administered subcutaneously. The effect on the colonisation resistance was measured by the concentration of resistant bacteria (either endogenous enterococci or an exogenous strain of Enterobacter cloacae) as well as by the relative caecal weight and the appearance of beta-aspartylglycine in the caecal contents. None of these parameters indicated a decreased colonisation resistance by any of the dosages investigated, meaning that, in the mouse the drug can be used safely without an increased risk of overgrowth by resistant bacteria causing superinfections. Both systemic and oral administration of 0.25mg of temocillin/mouse/day (10 mg/kg/day) appeared to completely suppress the sensitive Gram-negative bacilli from the digestive tract within 2 days. This selective decontamination of the digestive tract in mice was the reason for a subsequent study in man. It emerged that selective decontamination with parenterally administered temocillin was possible in 7 out of 10 volunteers. The remaining 3 however, did not respond to temocillin although their faecal Gram negative bacilli were susceptible to the drug. In none of the volunteers did the colonisation resistance appear to be affected. The consequences of the use of temocillin for either prevention or therapy of infections are discussed. PMID- 3849424 TI - Influence of temocillin on human bowel flora. AB - The influence of temocillin on intestinal flora was investigated in 6 healthy volunteers, each of whom received intravenous temocillin 1g twice daily over a period of 6 to 7 days. Dilution series of stool samples were investigated before, during and immediately after treatment, as well as 9 to 14 days after treatment had been stopped. The basic effect of temocillin was a pronounced reduction in Enterobacteriaceae during and immediately after treatment. Nine to 14 days after conclusion of treatment, the Enterobacteriaceae had almost reattained their original numbers. No clear influence could be established for temocillin on the total numbers of aerobic bacteria, strict anaerobes, or the members of the Bacteroides fragilis group. The number of enterococci increased slightly during treatment, but antibiotic-resistant Enterobacteriaceae were not selected by treatment. It can be concluded that in these volunteers the colonisation resistance of the colon was maintained during treatment, and that temocillin exerted an influence comparable to a selective decontamination of the intestine. PMID- 3849425 TI - Temocillin. In vitro antibacterial activity. AB - Temocillin, a 6-alpha-methoxy penicillin derivative, was tested in vitro against 516 recent clinical isolates of Enterobacteriaceae. The compound exhibited good antibacterial activity, with 95% of isolates inhibited by a range 2 to 16 mg/L. Further studies, against selected isolates resistant to ticarcillin, piperacillin and cefuroxime (Klebsiella oxytoca, 25; Enterobacter species, 34; and Citrobacter species, 5), showed about half of the isolates of K. oxytoca (11/25) to be resistant to aztreonam (MIC range 16-greater than or equal to 128 mg/L), but susceptible to temocillin, cefotaxime and latamoxef. In general, the resistant strains of Enterobacter species tested were not susceptible to cefotaxime (MIC range 16-128 mg/L), or aztreonam (MIC range 1.0-64 mg/L), and many exhibited reduced susceptibility to latamoxef (MIC range 2-128 mg/L). In contrast, all the strains were susceptible to temocillin (MIC range 4-16 mg/L). The bactericidal activity of temocillin was confirmed against selected aztreonam-resistant strains of K. oxytoca and Enterobacter cloacae by conventional time-kill studies, and against a strain of E. cloacae in an in vitro model system designed to simulate the temocillin concentration profiles attained in extravascular fluid such as peripheral lymph. In the time-kill studies, temocillin concentrations of 16 and 32 mg/L were shown to effectively reduce the numbers of viable bacteria by 99 and 99.9%, respectively, within 12 hours. In the in vitro model system the numbers of bacteria were reduced 99.9% over the initial 4-hour period. In combination with aminoglycoside antibiotics, temocillin exerted a synergistic or partially synergistic effect (sigma FIC less than or equal to 0.75) against the majority of strains of Pseudomonas aeruginosa tested. When combined with piperacillin, cefotaxime or latamoxef, temocillin, unlike cefoxitin, exhibited no antagonism against strains of Enterobacteriaceae producing inducible cephalosporinases. PMID- 3849426 TI - Antibacterial activity of temocillin. AB - The in vitro antibacterial activity of temocillin, a new penicillin, was determined in quantitative broth dilution tests, and compared with that of mezlocillin, piperacillin, cephazolin and cefotaxime. 805 clinical isolates of the Enterobacteriaceae family were tested, with temocillin exhibiting a high level of antibacterial activity against the various bacterial species, including mezlocillin-resistant strains. With the exception of Serratia marcescens, the minimum inhibitory concentrations (MICs) of 90% of tested strains of various species were in the range of 1 to 8 mg/L temocillin. Concentrations of 16 mg/L were required to inhibit 80% of S. marcescens strains, and some isolates were resistant. Significant differences between the MIC and MBC values were not observed. Furthermore, the pharmacokinetics of the bactericidal action of temocillin against mezlocillin-resistant strains was investigated, and killing curves showed that the compound was bactericidal at the MIC and the MBC. PMID- 3849427 TI - A survey of temocillin sensitivity of strains resistant to newer beta-lactam antibiotics. AB - The susceptibility of a total of 2014 Gram-negative clinical isolates (except Pseudomonas aeruginosa) to a number of antibiotics, including temocillin, was investigated in 2 geographically distinct areas. Overall, more strains were sensitive to temocillin than to mezlocillin, piperacillin, amoxycillin plus clavulanic acid, cefotaxime, cephazolin, latamoxef (moxalactam), cefoxitin, or netilmicin. Susceptibility to temocillin of multiple-resistant strains was studied. PMID- 3849429 TI - Human serum alpha 1-antichymotrypsin is an inhibitor of pancreatic elastases. AB - Incubation of human serum alpha 1-antichymotrypsin with human pancreatic elastase 2 or porcine pancreatic elastase results in the complete inhibition of each enzyme as determined by spectrophotometric assays. alpha 1-Antichymotrypsin reacts much more rapidly with the human than with the porcine enzyme. The inhibitor: enzyme molar ratio, required to obtain full inhibition of enzymatic activity, is equal to 1.25/1 when alpha 1-antichymotrypsin reacts with human pancreatic elastase 2 while it is markedly higher with porcine pancreatic elastase (5.5/1). Patterns obtained by SDS/polyacrylamide gel electrophoresis of the reaction products show the formation with both enzymes of an equimolar complex (Mr near 77 000) and the release of a fragment migrating as a peptide of Mr near 5000. Moreover a free proteolytically modified form of alpha 1 antichymotrypsin, electrophoretically identical with that obtained in the reaction with cathepsin G or bovine chymotrypsin, is produced in the reaction with each elastase but in a much greater amount when alpha 1-antichymotrypsin reacts with porcine elastase than with human elastase. As a consequence of our findings, the specificity of alpha 1-antichymotrypsin, so far limited to the inhibition of chymotrypsin-like enzymes from pancreas and leukocyte origin, has to be extended to the two pancreatic elastases investigated in this work. A contribution of alpha 1-antichymotrypsin to the regulatory balance between plasma inhibitors and human pancreatic elastase 2 in pancreatic diseases is suggested. PMID- 3849430 TI - Action of organophosphates on the electroretinogram of rainbow trout. AB - Electroretinograms (ERGs) were recorded in vitro from eyes of rainbow trout that had received intraperitoneal injections of either TOCP (triorthocresyl phosphate) or DEF (S, S, S-tributyl phosphorotrithioate). Data obtained after 24 h indicated that these organophosphates caused alterations in four of five ERG parameters in the case of TOCP and all five parameters in the DEF treated specimens. These data were compared with data obtained from experiments with eserine and carbachol and led to the conclusion that the effects of the organophosphates on the retina were independent of any cholinesterase inhibitor activity of the compounds. These organophosphates affect (a) the non-cholinergic photoreceptor layer of the retina which produces the a-wave ERG component, and (b) the other neural layers of the retina known to be responsible for generation of the b-wave component. Based on data obtained 15 days after exposure there was no evidence that TOCP or DEF has any delayed neurotoxic effect on the retina of rainbow trout. PMID- 3849428 TI - SV40 T antigen and the exocytotic pathway. AB - A chimeric gene consisting of DNA coding for the 15-amino acid signal peptide of influenza virus hemagglutinin and the C-terminal 694 amino acids of SV40 large T antigen was inserted into a bovine papilloma virus (BPV) expression vector and introduced into NIH-3T3 cells. Cell lines were obtained that express high levels (approximately 5 X 10(6) molecules/cell) of the chimeric protein (HA-T antigen). The biochemical properties and intracellular localization of HA-T antigens were compared with those of wild-type T antigen. Wild-type T antigen. Wild-type T antigen is located chiefly in the cell nucleus, although a small fraction is detected on the cell surface. By contrast, HA-T antigen is found exclusively in the endoplasmic reticulum (ER). During biosynthesis, HA-T antigen is co translationally translocated across the membrane of the ER, the signal peptide is cleaved and a mannose-rich oligosaccharide is attached to the polypeptide (T antigen contains one potential N-linked glycosylation site at Asn154). HA-T antigen does not become terminally glycosylated or acylated and little or none reaches the cell surface. These results suggest that T antigen is incapable of being transported along the exocytotic pathway. To explain the presence of wild type T antigen on the surface of SV40-transformed cells, an alternative route is proposed involving transport of T antigen from the nucleus to the cell surface. PMID- 3849431 TI - Alteration in hepatic mitochondrial compartment of cold-acclimated rats. Association with enhanced triiodothyronine serum levels. A morphometric/stereologic study by electron microscopy. AB - In cold-exposed rats, the circulating levels of free and total T3 rapidly increase and reach higher values after 2 h, 70% and 80%, respectively. These values remain constant during cold exposure and return to normal values after few hours of re-exposure to room temperature. A remarkable modification of the mitochondrial compartment in rat hepatic cells is associated with these hormonal variations. The morphometric stereologic analysis shows that after 10 days of cold exposure the number of mitochondria per nucleus is nearly doubled (from 1,912 to 3,414), the total volume of the mitochondrial compartment per nucleus increases by about 40% (from 21% to 29%), and the mitochondrial membrane surfaces per nucleus increase too (from 7,233 square microns to 11,597 square microns for the outer membranes; from 31,572 square microns to 42,603 square microns for the inner membranes + cristae). The mean mitochondrial volume decreases by about 25%. This probably indicates, the formation of new organelles by division of pre existing mitochondria. On re-exposure to room temperature, there is a return to normal values. The present data suggest the existence of a physiological long term mechanism for the regulation of cellular thermogenesis during cold exposure (increase in number of mitochondria per cell), associated with enhanced levels of T3. PMID- 3849432 TI - [Hemorrhage and blood loss]. PMID- 3849433 TI - [Treatment and prevention of vasomotor rhinitis in children]. PMID- 3849434 TI - [Biliary dyskinesia]. PMID- 3849435 TI - [Emergency care in myocardial infarct]. PMID- 3849436 TI - [Use of ethyl chloride in rendering trauma care]. PMID- 3849437 TI - [Rational nutrition for the population (material for talks)]. PMID- 3849439 TI - [Medical care for World War II veterans]. PMID- 3849438 TI - [Experience in organizing inoculations in a rural district]. PMID- 3849440 TI - [Social and vocational rehabilitation of the mentally ill and the tasks of medical personnel]. PMID- 3849441 TI - [Experience in organizing the state sanitary inspection of pharmaceutical institutions]. PMID- 3849442 TI - [Tularemia]. PMID- 3849444 TI - [Nutrition in chronic gastritis]. PMID- 3849443 TI - [Organization of first aid and emergency care in the USSR]. PMID- 3849445 TI - [Furuncles and carbuncles of the head]. PMID- 3849446 TI - [Phytotherapy of chronic pyoderma]. PMID- 3849447 TI - [Effect of alcohol on the fetus and child (material for talks)]. PMID- 3849448 TI - [Educational work experience at Rossosh' Medical College]. PMID- 3849449 TI - Hospital cost containment in Florida: 1984. PMID- 3849450 TI - Sunset review: the Nurse Practice Act. PMID- 3849451 TI - Medi-Kid, Inc., a nursing concept benefiting child, family and community. PMID- 3849452 TI - The entrepreneur of private duty. PMID- 3849453 TI - The purification of kallikrein from human whole saliva. AB - A quick and simple procedure is described for purifying kallikrein from human whole saliva. The enzyme has been purified about 2700-fold with a yield of approx. 30%. The procedure is based on the immediate fractionation of saliva by ion exchange chromatography. This is followed by a combination of affinity and high performance liquid chromatography. The results indicate that another protein component binds to the enzyme at pH 8.0. The homogeneity of the enzyme has been demonstrated by gel electrophoresis in the absence as well as in the presence of sodium dodecylsulfate. A mol. wt of 40,100 +/- 1800 has been calculated from gel electrophoresis experiments. Sedimentation equilibrium in an analytical ultracentrifuge gave a mol. wt of 39,700. The amino acid composition has been determined and it confirms that the enzyme has a low isoelectric point. The presence of tryptophan has been demonstrated by absorption and fluorescence spectroscopy. PMID- 3849454 TI - The role of guanine nucleotides in translational control by protein phosphorylation. PMID- 3849455 TI - Computers: a cooperative approach to success in health care. PMID- 3849456 TI - Computers in nursing. PMID- 3849457 TI - Ethical decision making. Part II. Analysis of an ethical case study. PMID- 3849458 TI - Intraocular pressure and systemic blood pressure after administration of vasoactive substances in hypertensive and normal rats. AB - Intraocular pressure (IOP) and arterial blood pressure (BP) were recorded manometrically in normotensive Wistar Kyoto rats (NR) and stroke-prone spontaneously hypertensive rats (SHR). IOP was significantly lower in SHR (7.8 +/ 0.2 mm Hg) compared to NR (15.9 +/- 0.4 mm Hg). In NR, administration of vasoactive substances (kallikrein, bradykinin, angiotensin I and II) or bloodletting resulted in significant IOP reactions, which ran nearly parallel to the acute BP changes. In SHR, however, IOP showed little reaction after comparable changes in BP. The cause of the low IOP in SHR is unknown. It is assumed that in SHR rarefaction of arterioles and capillaries and a decrease in the compliance of eye vessels, in combination with an increase in the distensibility of the bulbus at this low IOP level, contribute to the lack of IOP response after administration of vasoactive drugs. PMID- 3849460 TI - Health and fitness. PMID- 3849459 TI - Effect of cimetidine on enzyme inactivation, bile acid precipitation, and lipid solubilisation in pancreatic steatorrhoea due to cystic fibrosis. AB - In pancreatic steatorrhoea, both pH-dependent bile acid precipitation and enzyme inactivation may limit the efficacy of pancreatic enzyme supplements and both may be preventable by addition of cimetidine. To separate these effects we compared postprandial jejunal aspirate from eight adults with steatorrhoea due to cystic fibrosis on three randomised treatment regimens (pancreatin, cimetidine, and both together). We also compared the results with those of previous studies of patients on no treatment, and of healthy subjects. On pancreatin 60% of the test meal entered the jejunum at pH less than 5 compared with 17% in health. Lipase concentration and lipolysis increased over the values on no treatment (14.2 vs 4.4 U/l, p less than 0.01; 16% vs 11%, p less than 0.02) but bile acid precipitation was not reduced (38% vs 27%, NS), and aqueous-phase lipid concentration decreased (6.7 vs 8.6 mM/l, p less than 0.05). On cimetidine, bile acid precipitation fell (19% vs 38%, p less than 0.05); although lipase concentration and lipolysis were lower than on pancreatin (4.8 U/l vs 14.2 U/l, p less than 0.01; 9% vs 16%, p less than 0.01) lipid solubilisation increased (8.8 vs 6.7 mM/l, p less than 0.05). On the combination, there was a marked improvement (p less than 0.02) in lipid solubilisation (18.3 mM/l), reflecting the improvement both in lipase (38.4 U/l) and lipolysis (24%), and in bile acid precipitation (5.6%). We conclude that the efficacy of pancreatin is limited by pH-dependent bile acid precipitation in addition to enzyme inactivation. The action of cimetidine in improving the efficacy of pancreatin depends on prevention of both these effects. PMID- 3849461 TI - Conference report. Talking points. PMID- 3849463 TI - Problems Legion. PMID- 3849462 TI - 'Knickers'--a fundamental human right. PMID- 3849465 TI - Faecal incontinence. PMID- 3849464 TI - Reminiscence therapy: the remembrance of times past. PMID- 3849466 TI - A pill for an ill? PMID- 3849467 TI - Bf and C3 complement types in rheumatoid arthritis. AB - Bf and C3 complement types were studied in 100 male and 100 females patients from northern Sweden with erosive rheumatoid arthritis (RA) and compared with population controls. A significantly decreased frequency of the Bf FS phenotype was found particularly in males and in patients with a family history of polyarthritis. Significant Bf associations were also found with a more severe form of RA (functional classes III and IV) and with high titers of the rheumatoid factor. No significant difference with respect to C3 phenotype and gene frequencies was found between RA patients and controls. Thus, the association between RA and C3F found in some previous investigations was not confirmed. PMID- 3849468 TI - Interesting insights: Guest editorial. Images of Israel: a focus of forces. PMID- 3849469 TI - Pain coping model and typology. PMID- 3849470 TI - Explaining primary care visits. PMID- 3849471 TI - Nursing care of the family with a chronically ill, hospitalized child: an alternative approach. PMID- 3849472 TI - Using nursing diagnosis to describe the clinical competence of baccalaureate and associate degree graduating students: a comparative study. PMID- 3849473 TI - A new confrontation: nursing education and computer technology. PMID- 3849474 TI - The participant philosophy in nursing science. PMID- 3849475 TI - Developing a new philosophy for an established school of nursing. PMID- 3849476 TI - The ANA code: a comparative perspective. PMID- 3849478 TI - Transcending space and time. PMID- 3849477 TI - Aging--a psychosomatic illness. PMID- 3849479 TI - The future of nursing education and nursing practice. PMID- 3849480 TI - The future and environmental health nursing. PMID- 3849481 TI - My most unforgettable patient. PMID- 3849482 TI - [Questionnaires for anxiety and depression]. PMID- 3849483 TI - [Healthy youth: our best asset. World Health Day 1985]. PMID- 3849484 TI - [Electrocardiographic symptomatology]. PMID- 3849485 TI - [Menopause. When should the doctor be consulted?]. PMID- 3849486 TI - [Health and life environment: health in a school environment from 5 to 7 years of age]. PMID- 3849487 TI - [Mycoses]. PMID- 3849488 TI - [General antifungal antibiotics]. PMID- 3849489 TI - [Medical aspects of deep-sea diving]. PMID- 3849490 TI - [Healthy youth: our best asset. Youth and drugs]. PMID- 3849491 TI - [Youth and sexuality]. PMID- 3849492 TI - [Arteriopathy of the lower limbs and Doppler]. PMID- 3849493 TI - [Benign childhood parasitoses (oxyuriasis, ascaridiasis, taeniasis)]. PMID- 3849494 TI - [The compromise of relinquishment]. PMID- 3849496 TI - [Healthy youth: our best asset. The world wastes its best resource]. PMID- 3849495 TI - [Prostaglandins in 1985]. PMID- 3849497 TI - [Youth and risk]. PMID- 3849498 TI - [Youth and participation]. PMID- 3849499 TI - [Road traffic accidents]. PMID- 3849500 TI - [Tobacco and health: in regard to nurses]. PMID- 3849501 TI - [Nursing diagnosis: a good deed or a misdeed?]. PMID- 3849502 TI - [For equal work, equal pay]. PMID- 3849503 TI - [A fall that took him far]. PMID- 3849504 TI - [Tolerance when faced with a deficiency]. PMID- 3849505 TI - [Obtaining organs in Canada]. PMID- 3849506 TI - [Voluntarism: the kingdom of free people]. PMID- 3849507 TI - [The nursing diagnosis: its foundation is based on a conceptual model]. PMID- 3849508 TI - [From cell to society]. PMID- 3849509 TI - [Should one speak of death to patients with a poor prognosis?]. PMID- 3849510 TI - Is triclosan susceptible to contamination? PMID- 3849511 TI - IV administration and tracheostomy care in the home. PMID- 3849512 TI - Infection control measures for the use of amniotic membranes. PMID- 3849513 TI - Use of personal items could present problems. PMID- 3849514 TI - Implementing a successful hepatitis B vaccination program. AB - Health care personnel with frequent blood contact are at high risk for being exposed to and developing hepatitis B infection. Exposure to unidentified infectious patients may lead to personnel inadvertently foregoing appropriate, passive immunoprophylaxis. For these reasons, our hospital elected to conduct an aggressive program to administer hepatitis B vaccine to all employees at high risk for exposure to hepatitis B virus, thus protecting such employees from inadvertent occupational exposure. Administrators agreed to offer the vaccine as a free employee health benefit. "High-risk" employees attended mandatory inservice presentations covering hepatitis B disease, vaccine safety and efficacy, and related concerns. High-risk individuals were required to either receive vaccine or sign "informed refusal" forms. The vaccine clinic was organized to accommodate employee work schedules. Of high-risk employees eligible for vaccination, 90% completed a three-dose vaccine course. Extensive inservice education, financial and administrative support, and careful advance planning are all crucial in achieving high compliance with vaccination programs. A description of key steps in designing a successful vaccination program is outlined. PMID- 3849515 TI - Klebsiella oxytoca isolates in a general hospital. AB - Primary infections caused by Klebsiella species are uncommon, but the organism is an important nosocomial pathogen. We report the predisposing factors, clinical features and outcome of 44 hospitalized patients in whom Klebsiella oxytoca was isolated. Twenty-one (48%) isolates were community-acquired and 23 (52%) were considered nosocomial in origin. Most of the patients were elderly males with serious underlying diseases. There were significant differences between those patients who acquired Klebsiella oxytoca in the hospital and in the community. Nosocomially acquired organisms were associated with a higher mortality (52% vs. 24%) (p less than 0.05), a higher incidence of infection vs. colonization (83% vs. 57%) (p less than 0.05), and a higher percentage of cases of pneumonia (43% vs. 19%) (p less than 0.05). The clinical features, the hospital service and the patients' underlying diseases were similar when patients who died and those who survived were compared. Patients who died were exposed to antibiotics more often prior to the positive culture with K. oxytoca (p less than 0.05). K. oxytoca is a significant pathogen in hospitalized elderly patients. It is likely to cause infections, especially pneumonia, and carry a high mortality. The organism can become endemic within the hospital setting with continued carriage and nosocomial spread. PMID- 3849516 TI - Controlling urges and infections--computer system design for epidemiology. PMID- 3849517 TI - Do antibiotics interfere with host/bacterial interaction? PMID- 3849518 TI - Rubella prevention programs. PMID- 3849519 TI - The international implications of nursing education and practice. PMID- 3849520 TI - Return to Aswan: planning the course. PMID- 3849522 TI - First independent survey of National Council membership needs completed. PMID- 3849521 TI - Collective bargaining and organized nurses: correlation of support and participation. AB - The objective of this article was to list identified personal characteristics which are intrinsic to the respondents, irrespective of their profession or employment, and which influence their viewpoints and participation in collective bargaining. Little information is reported in the nursing literature which points out the similarities of nurses to other subsets of society. The belief systems of various sub-group affiliations can have greater influence on one's opinions than one's socialization to professional values or exposure to particular environments. The current investigation was of an explorative nature. Moreover, as with many surveys, the applicability of findings is limited to the respondent population. No significant correlations were identified for nurses who are financially dependent on the income from their position, union membership of a family member, hospital size, shift worked or full-time/part-time employment status. The identified correlates of participation in collective bargaining as seniority in bargaining units and employment, hierarchical employment position and involvement in the organizing campaign were consistent with findings regarding blue collar unionists. Perception and militance correlates of age, seniority in the profession and the bargaining unit, race, religion, sex, employment position, membership in the professional association prior to collective bargaining, involvement in the initial organizing campaign and geographic location are also supportive of previous findings. The major finding of this investigation was that a tendency toward negative perceptions was associated with a proclivity toward militance. This was particularly true for the professional model of collective bargaining.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3849523 TI - Issues in Ontario: the standards of nursing practice. PMID- 3849524 TI - Licensing Canadian nurses: the perspective from New York. PMID- 3849525 TI - Nurse and physician collaboration: how to strengthen the team. PMID- 3849526 TI - Symposium on nursing diagnosis in critical care. Overview. PMID- 3849527 TI - A proposal for two new nursing diagnoses: potential for organ failure and potential for tissue destruction. PMID- 3849528 TI - A daily living functional health status perspective for nursing diagnosis and treatment in critical care nursing. PMID- 3849529 TI - Nursing diagnosis in critical care: reflections and future directions. PMID- 3849530 TI - The Fontan procedure. AB - The Fontan procedure has afforded improved surgical repair for several complex congenital cardiac defects, including tricuspid atresia and single ventricle. Through surgical creation of a connection between the RA and the RV or PA, adequate pulmonary perfusion can be achieved without an RV. Although it is not an anatomic connection, the Fontan procedure is a more physiologic approach than the previously used shunt procedures. Systemic venous return and PVR are effectively separated within the heart, pulmonary blood flow is assured through an RA-to-PA connection, and ventricular volume overload is avoided. The procedure has been effective in relieving cyanosis and has resulted in improved levels of exercise tolerance after surgery. PMID- 3849531 TI - A review of the use of computerized digital instrumentation to determine pulmonary artery pressure measurements in critically ill patients. PMID- 3849532 TI - A review and critique of the literature on preoxygenation for endotracheal suctioning. PMID- 3849533 TI - Pauses for reflection. PMID- 3849535 TI - Monitoring urinary bladder temperature. PMID- 3849534 TI - Anticoagulation in atrial fibrillation. AB - Thromboembolic complications are a major problem in patients with atrial fibrillation. This vignette presents the probabilities of thromboembolism in the various etiologies of atrial fibrillation and prophylactic management with anticoagulants. PMID- 3849536 TI - Phenotypic resistance to antimicrobial agents. PMID- 3849537 TI - Comparative activity of the penem antibiotic Sch 34343 against gram-negative and gram-positive bacteria with special reference to multiresistant strains. AB - A new penem antibiotic, Sch 34343, was shown to be active against a large number of Gram-positive bacteria. The drug inhibited penicillinase-positive and negative staphylococci equally well, being five times more active than cefamandole and ten times more active than methicillin. Most methicillin resistant staphylococci were inhibited by concentrations between 0.25 and 4 mg/l, but a small group of highly resistant strains were observed. Sch 34343 was eight times less active than ampicillin and penicillin G, but as active as piperacillin against enterococci. The drug showed excellent activity against various streptococci. Sch 34343 was as bactericidal as flucloxacillin, ampicillin and penicillin G against staphylococci, enterococci and streptococci, respectively, in killing kinetic tests. Enterobacteriaceae susceptible to third-generation cephalosporins were approximately five times less susceptible to Sch 34343, but MICs were far below the susceptibility breakpoint. Sch 34343 was equally active against Citrobacter and Enterobacter strains that were highly resistant to third generation cephalosporins and to aztreonam. Together with thienamycin, this drug seems to be a good alternative for the treatment of infections caused by bacteria resistant to third-generation cephalosporins and to aztreonam. PMID- 3849538 TI - Comparative in-vitro activity of Sch 34343, a new penem antibiotic. AB - Using an agar dilution technique we examined the in-vitro activity of Sch 34343 against 485 clinical bacterial isolates. Ampicillin, mezlocillin, cefuroxime, cefotaxime, cefotetan, ceftazidime, ceftriaxone, imipenem (N-formimidoyl thienamycin) and gentamicin were used for comparison. Sch 34343 exhibited activity against all species tested, excepting Pseudomonas aeruginosa and Pseudomonas species. Unlike many newer beta-lactams, Sch 34343 was highly active against Gram-positive species. It was consistently active against the Enterobacteriaceae, with MIC50 and MIC90 being usually closely similar, as were results with two inoculum sizes (104 and 106 cfu). This, together with its activity against strains resistant to many other beta-lactam agents, suggested high stability to beta-lactamases. Sch 34343 was the most active compound tested against Bacteroides fragilis. In tests of combined bacteriostatic action with gentamicin no synergy was seen. It had bactericidal action in broth culture, against sensitive strains of E. coli, Klebsiella pneumoniae, Staphylococcus aureus and Streptococcus faecalis. It showed good stability in aqueous solution and serum at low temperatures at pH values in the physiological range, and was moderately stable at 37 degrees C. Binding in human plasma was 72%. We concluded that Sch 34343 is a highly promising agent with a broad spectrum of activity making it potentially suitable as monotherapy for patients with infection of undetermined bacterial aetiology, particularly if Bact. fragilis is a possible pathogen. PMID- 3849539 TI - Effects of elastase and cigarette smoke on alveolar epithelial permeability. AB - To determine whether instilled porcine pancreatic elastase (PPE) increases alveolar epithelial permeability, we measured alveolar epithelium permeability X surface area (PS) for [14C]sucrose and 125I-bovine serum albumin (125I-BSA) in isolated perfused lungs from hamsters previously exposed to PPE and/or cigarette smoke. Saline (0.5 ml) with 0, 5, or 20 units PPE was instilled intratracheally in anesthetized hamsters. Those exposed to smoke for 4-6 wk received 0 or 5 units; PS was measured 3 h later. Nonsmokers received 0, 5, or 20 units; PS was measured 3 h, 24 h, or 5 days later. Control PS values were (cm3/s X 10(-4), +/- SE) 0.84 +/- 0.11 for sucrose and 0.030 +/- 0.006 for BSA. Three and 24 h following 20 units PPE, (PS)sucrose was twice the control valve. (PS)BSA was four times control at 3 h but not significantly increased at 24 h. Five days after PPE both were back to control levels. Five units PPE or smoke exposure alone caused no PS changes. Smoke exposure and 5 units PPE caused (PS)sucrose to increase markedly (1.85 +/- 0.32); (PS)BSA was not significantly increased (0.076 +/- 0.026). Thus instilled PPE causes reversible increases in alveolar epithelial PS; cigarette smoking potentiates this effect. PMID- 3849540 TI - Characterization of a rat tRNA gene cluster: comparison of nucleotide sequences of the gene for tRNALeu newly found in repeating units. AB - In the rat, DNA carrying a cluster of the genes for tRNAAsp, tRNAGly, and tRNAGlu, aligned in that order, is repeated about 10 times. Seven DNA clones corresponding to the independent repeating units were isolated from a rat gene library. Nucleotide sequence analysis of these clones revealed the presence of a fourth tRNA gene, the gene for tRNALeu, in the cluster. The tRNALeu gene is located about 600 base pairs (bp) upstream from the tRNAAsp gene and its polarity differs from those of the other three tRNA genes. Among the repeating units, the nucleotide sequence of tRNALeu is conserved to a relatively high degree. PMID- 3849541 TI - Ostomy dolls for pediatric patients. PMID- 3849543 TI - Time--the elusive stuff of which dreams are made. PMID- 3849542 TI - Accreditation versus nonaccreditation. PMID- 3849544 TI - The role of the ileoanal reservoir in patients with ulcerative colitis and familial polyposis. PMID- 3849545 TI - United Ostomy Association visits and adjustment following ostomy surgery. PMID- 3849546 TI - The rodless stoma: an alternative to the conventional loop. PMID- 3849547 TI - Marketing concepts and strategies for ET nurses. PMID- 3849548 TI - The psychologic impact of language on persons with ostomies. PMID- 3849549 TI - Pathways to excellence in the specialty organizations. PMID- 3849550 TI - Community assessment: its components and significance in planning health care programs. PMID- 3849551 TI - Nursing implications in the care of the ostomy patient receiving radiation and chemotherapy. PMID- 3849552 TI - Practical considerations for conducting nursing research. PMID- 3849553 TI - Financial reimbursement for publication. PMID- 3849554 TI - Osteoporotic fractures exact a toll. PMID- 3849555 TI - An unchanging culture. PMID- 3849556 TI - Self care potential: is it present? PMID- 3849557 TI - Attitudes affect quality care. PMID- 3849559 TI - Skin care for older adults. Wound cleansing. PMID- 3849558 TI - Suicide in older adults. PMID- 3849560 TI - Promote family interaction. PMID- 3849561 TI - [Urinary kallikrein quantity and activity in normal pregnant women in the third trimester]. AB - In this study, urinary kallikrein quantity and activity were measured by the kallikrein direct RIA and kininogenase activity with human low molecular weight kininogen in 32 non pregnant healthy women and 20 normal 3rd trimester pregnant women. There was no significant difference in urinary kallikrein quantity between non pregnant healthy women (n=32, 64.0 +/- 6.3 micrograms/day, mean +/- S.E.) and normal pregnant women (n=20, 68.1 +/- 10.1 micrograms/day). There was a significant difference (p less than 0.05) in urinary kallikrein activity between non pregnant healthy women (n=32, 496.2 +/- 57.2 micrograms kinin/day) and normal pregnant women (n=20, 319.5 +/- 48.1 micrograms kinin/day). The reason for no significant difference in the urinary kallikrein quantity may be that neither non pregnant women nor normal pregnant women have renal damage. And, one of the reasons for significant low urinary kallikrein activity in normal pregnant women may be that the sensitivity of blood vessels to angiotensin II in normal pregnancy is less than in non pregnancy. PMID- 3849562 TI - The Apostolate of Health Care Workers. PMID- 3849563 TI - Ruptured aneurysm in pregnancy. AB - Within the last ten years, twenty pregnant women with ruptured intracranial aneurysms were managed at Los Angeles County-University of Southern California Medical Center. Difficulties encountered in the care of these patients will be illustrated with case studies. In two patients, failure to diagnose subarachnoid hemorrhage delayed management. In another patient, cerebral vasospasm complicated the course. Selection of appropriate diagnostic tests, timing of surgery, importance of fetal monitoring, and method of delivery will be discussed. PMID- 3849564 TI - Increased intracranial pressure and its systemic effects. AB - The brain is capable of mediating complex regulatory functions in the cardiopulmonary and gastrointestinal systems. Increased intracranial pressure may have detrimental effects not only upon cerebral structure and function but also upon the cardiopulmonary and gastrointestinal systems. Although the manifestations of systemic dysfunction produced by cerebral disease have been defined, the precise role of the interaction and interrelationship of increased intracranial pressure and the nervous system pathways to specific organ systems in delineating the mechanisms of these manifestations continues to be a topic of inquiry. PMID- 3849565 TI - Focus on rehabilitation in the acute care setting: the role of the neuro clinical nurse specialist. AB - Establishment of an early rehabilitation program for patients with neurological/neurosurgical illness or injury is the focus of this article. The Neuroscience Clinical Nurse Specialist (NCNS) is identified as having a major responsibility in initiating early rehabilitation in the acute care setting. Development of the rehabilitation program is discussed through the NCNS's roles as educator, clinician, consultant, and researcher. Implementation of the rehabilitation program emphasizes the use of the nursing process, the role of the staff nurse, active patient and family participation, and use of the interdisciplinary team approach. General concepts rather than specific practices are used in order to present an overview of the role. PMID- 3849566 TI - Continuous somatosensory evoked potential monitoring in the NICU. AB - Monitoring of somatosensory evoked potentials (SSEP) of head-injured patients is a frequent and interesting topic in the neuroscience nursing arena. Often, however, nursing involvement in the recording of somatosensory evoked potentials has been limited to observing the once a week procedure and documenting patient outcome. Active nursing involvement and input in this fast moving area of research has been developed in a large midwestern neuroscience center where nurses in the NICU are responsible for the continuous monitoring (24 hours a day) of somatosensory evoked potentials of the brain-injured patient. These nurses are accountable for an accurate clinical assessment of the patient, placement and upkeep of the monitoring equipment, and evaluation of the waveform for abnormalities. The purpose and physiology of the monitoring process and the aspects of nursing care will be discussed in this article. PMID- 3849567 TI - Problems in interpreting abnormal auditory brainstem responses in comatose patients. AB - Auditory brainstem responses (ABRs) provide a way to evaluate central nervous system function in young, confused, uncooperative or comatose patients. Auditory brainstem responses represent activity in or around the vestibulocochlear (VIII) cranial nerve, cochlear nucleus, superior olivary complex, lateral lemniscus, and inferior colliculus. Many factors affect recording of the auditory brainstem response. These factors include technical factors, chronic alcoholism, demyelinating diseases, ototoxic drugs, barbiturates, hearing loss, otitis media, and hypothermia. PMID- 3849568 TI - The primary nurse as a care giver in a neurology research setting. AB - Multiple sclerosis is a debilitating disease that is the focus of study in many clinical settings. In one center conducting research on multiple sclerosis, an investigational drug being studied is called polyinosinic-polycytidylic acid poly l-lysine (Poly-ICLC). The role of the primary nurse in this research project is described and discussed. A case presentation is included to illustrate how a patient receives continuity of professional nursing care while participating in a research protocol. PMID- 3849569 TI - Primary nursing. Teamwork is the answer. AB - Eight years of experience with primary nursing in a 750-bed acute care teaching hospital revealed several persistent problems: isolationism among nurses, communication problems between nurses and physicians, inadequate documentation, and insufficient time for patient and staff education, resulting in frustration for the nursing staff. By combining the basic elements of primary and team nursing, a 3-month pilot in one unit resulted in improved job satisfaction for professional staff, improved quality assurance scores, and increased physician nurse communication. PMID- 3849570 TI - Informed consent. An update. AB - A review of recent case law demonstrates that there is little agreement regarding either the amount of disclosure required for informed consent or the person who must present the information for informed consent. Examples of objective standards, subjective standards, and statutory standards are presented, as well as the impact of these recent developments on nursing practice. PMID- 3849572 TI - Cultivating minor mentors. PMID- 3849571 TI - Use of physician-hired nurses. A survey. AB - The results of a survey conducted on the practice of using physician-hired nurses in hospitals are reported. Nursing administrators need information on the nursing services that are being provided in direct association with the medical practice of physicians, particularly when those services influence the quality and cost effectiveness of patient care. The information can be used to plan more effective approaches to the delivery of nursing health care services. PMID- 3849573 TI - Very low birth weight infant care. PMID- 3849574 TI - Nursing management of mastitis due to breastfeeding. AB - Mastitis secondary to breastfeeding is a very preventable condition in which the nurse can play a large role. The physiology of normal breastfeeding and the pathophysiology of mastitis are presented, along with nursing interventions and techniques with scientific rationale to prevent and treat mastitis. PMID- 3849575 TI - Pregnancy and sexuality. AB - Sexuality is an integral part of the human experience. Pregnancy is a time of adjustment, and the pregnant couple has a special need for information, guidance, and education during this period. Descriptions of various physiologic and emotional changes caused by pregnancy, with suggested nursing interventions, are presented. PMID- 3849576 TI - Amniotic band syndrome. AB - Amniotic band syndrome results from a tear in the amnion, due to unknown etiology, which allows amniotic fluid and fetal parts to escape from the amnion into the chorion. Defects resulting from amniotic band syndrome are described. Management of the infant by a multidisciplinary, team approach is advised. Areas for further research are recommended. PMID- 3849577 TI - Lactation suppression. Nonpharmaceutical versus pharmaceutical method. AB - Mothers bottle feeding their infants need an adequate method of lactation suppression to prevent/lessen discomfort related to breast engorgement. This study compared the effectiveness of a non- pharmaceutical method (ice and tight bra) of suppressing lactation to a pharmaceutical therapy (bromocriptine mesylate). The sample consisted of 36 subjects who used the pharmaceutical therapy (drug group) and 17 subjects who used the non-pharmaceutical method (protocol group). The data showed that the drug group had significantly less engorgement, milk production, and discomfort on the fourth postpartum day, but the lactation process was prolonged until postpartum day nine or 16. The protocol group had more engorgement, milk leakage, and discomfort on postpartum day four, but the lactation process was completed before postpartum day 16. PMID- 3849578 TI - Mothers' use of knowledge during the first postpartum weeks. AB - Throughout their hospital stay, mothers are inundated with information relating to physical and psychosocial aspects of self care, as well as infant physical care, feeding, and behavior. However, the mother's perception of the usefulness of this information varies. This study explores 1) What information regarding self care and infant care do mothers find useful during the first week home? and 2) What additional information would be helpful? The use of knowledge was determined by the 78 mothers' responses to a self-administered questionnaire. Results indicated that mothers were using much of the information presented during their hospital stay. Some of the mothers designated areas for additional teaching. PMID- 3849580 TI - Body image attitudes during pregnancy and the postpartum period. AB - Research was conducted to investigate postpartal women's attitudes toward their body image; these attitudes were then compared to their pre-pregnant and pregnant body image attitudes. A repeated measures design was used, with data collected at two and six weeks postpartum. Pregnant and pre-pregnant attitudes were collected retrospectively. A nonrandom, convenience sample of 63 multiparas and primiparas was used. The results indicated that the subjects had a slightly positive attitude toward their postpartum body image; multiparas felt more positive about their postpartum body image than did the primiparas; the women felt more positive about their pre-pregnant body image than about their postpartum body image; and the women felt more positive about their postpartum body image than about their pregnant body image. PMID- 3849579 TI - Anesthesia, analgesia for vaginal childbirth. Differences in maternal perceptions. AB - An exploratory study of 77 primiparous women during the first 48 hours postpartum tested for differences between those who had received epidural anesthesia, those who had received analgesia during labor with local or pudendal block for delivery, and those who had received no analgesia and either no anesthesia or local or pudendal block for delivery. No group differences were found in self esteem, feelings about the childbirth experience at the time of delivery, or maternal perception of her infant as compared to her perception of an average infant. Those receiving epidural anesthesia had less positive feelings about the childbirth experience at the time of the interview, but they described their views of their infants at birth more positively and with more identifying remarks than either of the other two groups. No differences were found in self-esteem, feelings about the childbirth experience at time of delivery or at the time of interview, or maternal perception of the newborn compared to that of an average infant by those who attended childbirth classes and those who did not. PMID- 3849581 TI - Regional citrate anticoagulation: a report of 10 month's experience. PMID- 3849582 TI - Reflections for the future. PMID- 3849583 TI - Counseling the sexually dysfunctioning hemodialysis patient. PMID- 3849584 TI - A dialysis "quick look" reference Kardex. PMID- 3849585 TI - Client teaching in a hemodialysis multidisciplinary educational/support group. PMID- 3849586 TI - Nutrition basics. PMID- 3849587 TI - Benefits derived from a multidisciplinary educational/support group. PMID- 3849588 TI - Orem's self-care theory of nursing: practical application to the end stage renal disease (ESRD) patient. PMID- 3849589 TI - Chronic self-destructiveness as manifested by noncompliance behavior in the hemodialysis patient. PMID- 3849590 TI - [Enzymochemical studies on pancreatic elastase. III. Zymogen-like elastase originating from the pancreas in the blood]. PMID- 3849591 TI - Behavioral management of insomnia. PMID- 3849592 TI - Child psychiatric nursing. The gap between need and utilization. PMID- 3849593 TI - Self-help therapy in Parents Anonymous. PMID- 3849594 TI - Therapy for men who batter. PMID- 3849595 TI - Cabbage patch syndrome. PMID- 3849596 TI - Asians and medication. PMID- 3849597 TI - Burnout. Can social support save the psych nurse? PMID- 3849598 TI - "Wet-look" hairstyle linked to ocular complaints. PMID- 3849599 TI - Instrument care know-how saves money. PMID- 3849600 TI - Soft lens cleaning and disinfection. PMID- 3849601 TI - Clinical tests for myasthenia gravis. PMID- 3849602 TI - Radial keratotomy: a continuing controversy. PMID- 3849603 TI - [Effects of KS-R1 (ampicillin suppository) and ampicillin oral dosing on fecal flora of children]. AB - A newly developed product, KS-R1 (a suppository containing 250 mg potency of ampicillin (ABPC)), was given to 7 children (5 boys and 2 girls) ranging from 4 years and 5 months to 8 years and 10 months in age, 3 times a day (average daily dose, 62.4 mg/kg) for 5 days. As a control, the same amount of ABPC dry syrup was given orally to 7 children (4 boys and 3 girls) ranging from 2 years and 8 months to 7 years and 7 months in age, 3 times a day (average daily dose, 55.3 mg/kg) for 5 days. The effects of these 2 preparations on the bacterial flora of the feces were investigated, and concentrations of ABPC in the feces and sensitivities of the isolated strains to ABPC were determined. The results were as follows. As for Gram-negative bacilli in the feces from children given KS-R1, there was no change in Escherichia coli, Klebsiella sp., Citrobacter sp. and Enterobacter sp. which were isolated from many children 3 days after the end of treatment, but they did not show any constant pattern of change in mean number. Other species did not show any pattern of increase in the number of children from whom they were isolated, or in the number of bacteria during the course after the beginning of treatment. The total number of bacteria identified as Enterobacteriaceae was at the level of 10(8) cells/g on any day of examination. Of Gram-negative bacilli other than Enterobacteriaceae, Pseudomonas sp. showed no constant pattern of change in number. On the other hand, of Gram-positive bacteria, there was no constant pattern of change in the number of Staphylococcus aureus, Coagulase-negative Staphylococci began to be isolated from many children 5 days after the beginning of treatment and were isolated from all children 5 days after the end of treatment, but there was no tendency for the mean number to increase. Enterococcus sp. was not isolated from 3 children 3 days after the beginning of treatment, and was decreased in number by one order in 3 out of other 4 children as compared with before-treatment. However, this species was isolated from all children 3 days after the end of treatment, and the mean number of bacteria was similar to that before-treatment although the number of bacteria was different in individual children.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3849604 TI - [A depressor substance system in hypertension]. PMID- 3849605 TI - [The frontier science and nursing. Symposium: the development and present status of science]. PMID- 3849606 TI - [The frontier science and nursing. Discussion: the transfigurations of science and nursing]. PMID- 3849607 TI - [External compression with elastic bandages and its effect on the peripheral circulation during skin traction]. PMID- 3849608 TI - [Discussion about "A correspondence to the patients seemed to be crabbed"]. PMID- 3849609 TI - [Discussion about "A correspondence to the patients seemed to be crabbed"]. PMID- 3849610 TI - [Implications and limitations (I)]. PMID- 3849611 TI - [The difference of the mode of thoughts and communications between Japan and U.S.A]. PMID- 3849612 TI - [Discussion: about the systems supporting research in practice]. PMID- 3849613 TI - A pharmacological manipulation of testicular function for rational therapeutic approach to male infertility: experimental and clinical data. PMID- 3849614 TI - Comparable worth: economic issue of the '80s--in Kansas? PMID- 3849615 TI - Comparable worth fact sheet. PMID- 3849616 TI - Nursing in Saudi Arabia. PMID- 3849617 TI - "Visiting nurse" in Haiti--1985. PMID- 3849618 TI - Hansen's disease: a worldwide problem, occurs in the U.S., also. PMID- 3849619 TI - Nurses' perceptions of continuing education in Kansas. PMID- 3849620 TI - Continuing nursing education in a rural setting: two providers' approaches. PMID- 3849622 TI - Acupuncture therapy in the treatment of chronic head, neck and neck-related pain. PMID- 3849621 TI - Serum elastase 1 in chronic pancreatic disease. AB - Elastase 1 and immunoreactive trypsin were assessed by a RIA technique in the sera of 29 control subjects, 24 pancreatic cancer patients, 22 patients with chronic pancreatitis and 31 with extra-pancreatic diseases to ascertain and compare their usefulness in chronic pancreatic disease diagnosis. Increased levels of elastase 1 were detected in 60.9% of pancreatic cancer and in 61.1% of chronic pancreatitis patients; low values were found in only two subjects with pancreatic disease. A close correlation between the two enzymes was found in patients suffering from pancreatic cancer and chronic pancreatitis. These data suggest that serum elastase 1, as well as immunoreactive trypsin, is of limited value in chronic pancreatic disease diagnosis; increased levels of the two enzymes always occur simultaneously; low immunoreactive trypsin values together with normal elastase 1 serum levels are detectable in a number of patients with chronic pancreatitis and severe exocrine insufficiency. PMID- 3849623 TI - The effect of acupuncture in 40 cases of endocrinic ophthalmopathy. PMID- 3849624 TI - 86 cases of insomnia treated by double point needling--daling through to waiguan. PMID- 3849625 TI - Clinical observation on 111 cases of asthma treated by acupuncture and moxibustion. PMID- 3849626 TI - Acupuncture therapy in 49 cases of postpartum urinary retention. PMID- 3849627 TI - Short-term effect in 135 cases of enuresis treated by wrist-ankle needling. PMID- 3849629 TI - Electro-acupuncture vs. amitriptyline in the treatment of depressive states. PMID- 3849628 TI - The effect of toosendanin on monkey botulism. PMID- 3849630 TI - Effect of "764-1" eyedrops on ultrastructure of corneal scars in rabbits. PMID- 3849632 TI - Studies on pharmacological action of saponin of the root of Anemone raddeana. PMID- 3849631 TI - Preliminary study of the effect of "764-1" eyedrops on the biochemical constituents of corneal scar in rabbits. PMID- 3849633 TI - Salvaging rats with decompression sickness by injection of ginseng and Ligustrazini co. without recompression. PMID- 3849634 TI - Clinical observation on the efficacy of 764-1 eyedrops in the treatment of corneal scars. PMID- 3849636 TI - [Scientific and feministic approach to health (dialog)]. PMID- 3849635 TI - [Cognitive structure of nursing student on bioethics. (2). IVF (in vitro fertilization)]. PMID- 3849637 TI - [Improving the problems in nursing administration]. PMID- 3849638 TI - [Considerations about staff development: toward improvement of nursing (2)]. PMID- 3849639 TI - [Searching for an effective instruction method of clinical practice of student nurses]. PMID- 3849640 TI - [A teaching-learning method of blood pressure measurement]. PMID- 3849641 TI - [Students self-evaluation of nursing practice in their graduating grade]. PMID- 3849642 TI - [Patient education and nursing research (dialog)]. PMID- 3849643 TI - Cancer as a preventable disease. PMID- 3849644 TI - Diet and cancer prevention. PMID- 3849645 TI - Using four simple steps, physicians do influence smoking behavior. PMID- 3849647 TI - Public perception of cancer risk and prevention: implications for physicians. PMID- 3849646 TI - Estrogens and endometrial cancer. PMID- 3849648 TI - Cancer risk reduction: a focus on physicians. PMID- 3849649 TI - Cancer statistics in Maryland and the United States. PMID- 3849650 TI - Resources: cancer prevention. PMID- 3849651 TI - Breast masses: screening and management. PMID- 3849652 TI - The impaired physician. The target of our concern. PMID- 3849653 TI - Carcinogenic risk assessment: concepts and issues. PMID- 3849654 TI - Clinical magnetic resonance imaging. PMID- 3849655 TI - Osteoarthritis X: Cervical spondylosis. PMID- 3849656 TI - Atypical Lyme disease or forme fruste. PMID- 3849657 TI - What a physician should know about ovarian cancer. PMID- 3849658 TI - Supreme Court upholds Mass. Mental Health Benefit Law. PMID- 3849659 TI - The future of health care: four critical variables. PMID- 3849660 TI - Home care/hospice for the AIDS patient. PMID- 3849661 TI - An Australian experience. PMID- 3849662 TI - The midwives' dilemma. PMID- 3849663 TI - Pain relief in labour--the introduction of an obstetric epidural analgesia service. PMID- 3849664 TI - The Asian mother--and her expectations. PMID- 3849666 TI - Getting involved in research. PMID- 3849665 TI - The abandoned baby. PMID- 3849667 TI - Breast-feeding and premature babies: guidelines for nurses. PMID- 3849668 TI - Test-weighing breast-fed babies: how accurate is it? PMID- 3849669 TI - Development of a breast milk banking program at a University Medical Center "nursing at a distance". PMID- 3849670 TI - Neonatal seizures: Part I. A developmental and clinical understanding. PMID- 3849671 TI - Activation of complement pathways by univalent antibody derivatives with intact Fc zones. AB - The ability of two univalent antibody derivatives to invoke complement-mediated lysis of guinea-pig L2C leukemic lymphocytes was investigated. The derivatives were Fab/c from rabbit IgG antibody, in which only one Fab arm is removed from the parent molecule and FabFc in which Fab gamma, from peptic digestion of sheep IgG antibody, is disulfide-bonded to the Fc gamma yielded by papain digestion of an arbitrary IgG. Antibody activity was directed against surface IgM on the target cells. Both derivatives could invoke lysis via the classical pathway in the presence of rabbit complement. Exposure of the cells to the derivatives at 37 degrees C before introducing complement yielded no protective antigenic modulation. At low complement concns the derivatives were more efficient than the parent antibodies at invoking lysis, apparently due to the fact that the derivatives do not cause modulation: it appears that cells can undergo a useful degree of modulation when confronted simultaneously by bivalent antibody and low levels of complement. The Fab/c preparations were also able to invoke lysis by guinea-pig complement. Lysis occurred under conditions where activation took place only via the classical pathway (in dilute complement) or only via the alternative pathway (in the absence of calcium ions, or in C4-deficient guinea pig serum). The results demonstrate that there is no need for two antigen-binding Fab arms in antibody activation of either the classical or alternative complement pathways. They favour models requiring clustering of Fc regions rather than steric changes which might follow binding of antigen. PMID- 3849672 TI - Beating the body snatchers at their own game. PMID- 3849673 TI - Getting what you want: negotiating nursing salaries. PMID- 3849674 TI - A patient classification system in home health care. PMID- 3849676 TI - How nurses can cope with the changing labor market. PMID- 3849675 TI - Marketing--a must in a competitive health-care system. PMID- 3849677 TI - Supporting staff through decentralization. PMID- 3849678 TI - Radical new college plans for PHC rejig. PMID- 3849679 TI - Royal College of Nursing. Radical rethink. PMID- 3849680 TI - Ageing--the universal human experience. PMID- 3849682 TI - RCN to ensure a fair deal for nursing. College invited to report to DHSS skill mix review. PMID- 3849681 TI - Meeting needs of the consumer. PMID- 3849683 TI - Royal College of Nursing. Not a factory. PMID- 3849684 TI - Plight of carers. PMID- 3849685 TI - Substance abuse. PMID- 3849686 TI - [Preparation for institutionalization. An essential condition for the adaptation to an admission unit]. PMID- 3849688 TI - The nurse-midwife. O.I.I.Q. position paper. PMID- 3849687 TI - [Violence towards the elderly]. PMID- 3849689 TI - [Violence against women. Results of a mini survey regarding nursing interventions]. PMID- 3849690 TI - [Vigilance and prudence. The real assets of the elderly faced with drugs]. PMID- 3849691 TI - [Drugs and the third age. A far-reaching problem]. PMID- 3849693 TI - [The professional: his rights and responsibilities]. PMID- 3849692 TI - [The admission unit. A stimulating workplace]. PMID- 3849694 TI - Productivity: managing for the long term. PMID- 3849695 TI - Organ transplantation, Part I. Law for the nurse manager. PMID- 3849696 TI - Determining patient needs after discharge. PMID- 3849698 TI - Marketing the emergency department. PMID- 3849697 TI - Designing a brief discharge planning screen. PMID- 3849699 TI - The perioperative educator: fourteen tips for survival. PMID- 3849700 TI - What satisfies nurses enough to keep them? PMID- 3849701 TI - The organization game. PMID- 3849702 TI - Art & science of management. Planning. PMID- 3849703 TI - Integrating acuity: the frugal road to safe care. PMID- 3849705 TI - Discharge planning for continuity of care. PMID- 3849704 TI - The health implications of hazardous waste. PMID- 3849706 TI - Discharge planning for continuity of care. The service population. PMID- 3849707 TI - Discharge planning for continuity of care. Patient and family involvement. PMID- 3849708 TI - Discharge planning for continuity of care. Human resources: roles and interdisciplinary relationships. PMID- 3849709 TI - Discharge planning for continuity of care. Program design: components and coordination. PMID- 3849710 TI - Discharge planning for continuity of care. Documentation. PMID- 3849711 TI - Discharge planning for continuity of care. Quality assurance. PMID- 3849712 TI - The Georgia Baptist Medical Center discharge planning model. PMID- 3849713 TI - An educator's perspective: discharge planning model. PMID- 3849714 TI - Hospital discharge planning for continuity of care: the national perspective. PMID- 3849715 TI - Do not ignore the physician in discharge planning. PMID- 3849716 TI - Discharge planning for continuity of care. Definitions, goals, benefits, principles. PMID- 3849717 TI - The Yeshiva decision: implications for nursing education. PMID- 3849718 TI - The Rutgers experience: one perspective on service-education collaboration. PMID- 3849719 TI - Faculty practice that works: two examples. We call it clinical consultancy. PMID- 3849720 TI - It often falls short of nirvana, but.... PMID- 3849721 TI - The perils and joys of collaborative research. PMID- 3849722 TI - Assigning publication credits. PMID- 3849723 TI - Orchestrating a career. PMID- 3849724 TI - Statement on associate degree nursing. PMID- 3849725 TI - The feedback lecture method: stimulating active learning. PMID- 3849726 TI - Seen, but not heard. PMID- 3849727 TI - Sunshine homes. PMID- 3849728 TI - Speaking for themselves. PMID- 3849729 TI - Man of morals. Interview by Laurence Dopson. PMID- 3849730 TI - Nursing process. How one nurse was converted. PMID- 3849731 TI - Given the key of the door. PMID- 3849733 TI - Systems of life No. 128. Setting up the systems--28. Development of the brain. PMID- 3849732 TI - Budgeting for beginners. Good housekeeping. PMID- 3849734 TI - Backchat: 'I've done that one'. PMID- 3849735 TI - Putting fright to flight. PMID- 3849736 TI - Audrey Emerton. The UKCC's new face. Interview by Laurence Dopson. PMID- 3849737 TI - Nursing theory. It's all right in theory... PMID- 3849738 TI - Guidelines for success. PMID- 3849739 TI - Redundancy. On the scrap heap? PMID- 3849741 TI - The education debate. Future perfect?. Interview by Betty Kershaw. PMID- 3849740 TI - Redundancy. A time of opportunity. PMID- 3849742 TI - Nursing process. Real plans for real patients. PMID- 3849743 TI - An identity crisis. PMID- 3849744 TI - Croup--to treat or not to treat. PMID- 3849745 TI - Geriatric nursing. The institutional trap. PMID- 3849746 TI - Geriatric nursing. Put yourself in their shoes. PMID- 3849747 TI - Geriatric nursing. Lessons from America. PMID- 3849749 TI - I heard it on the grapevine. PMID- 3849748 TI - Backchat. Cosmetic changes? PMID- 3849750 TI - Mine's a vodka and orange. PMID- 3849751 TI - Management of indwelling urethral catheters. PMID- 3849752 TI - Professional probe. 4. Best of both worlds. Interview by Catharine Sadler. PMID- 3849753 TI - Legislation. 5. The dawn of a new era. PMID- 3849754 TI - Midwifery revision. 1. Epidural analgesia. PMID- 3849756 TI - Stoma care. 2. The right appliance. PMID- 3849755 TI - Management. Griffiths at ward level. PMID- 3849757 TI - Nurses in society. Exercise Hobson's choice. PMID- 3849758 TI - Vigil on the vulnerable. PMID- 3849759 TI - Nursing care study. Decline into dementia. PMID- 3849760 TI - Psychiatry. Kith, kin and conflict. PMID- 3849761 TI - Nurses in society. Women and the media. PMID- 3849763 TI - Whose life is it anyway? PMID- 3849762 TI - Clinical. A pace apart. PMID- 3849764 TI - They also serve who only stand and wait. PMID- 3849765 TI - Professional probe. 2. That worrying habit. Interview by Catharine Sadler. PMID- 3849766 TI - Legislation. 3. The swinging sixties. PMID- 3849767 TI - Misleading figures. PMID- 3849768 TI - Education. Learning to communicate. PMID- 3849769 TI - Practice. Room for choice. PMID- 3849770 TI - Clinical revision series. 16. Overcoming the pain. PMID- 3849771 TI - Mental health. Getting to grips with groups. PMID- 3849772 TI - A part of life. PMID- 3849774 TI - Crown immunity. Untouched by law. PMID- 3849773 TI - Lead--on the level? PMID- 3849775 TI - Mental handicap. Big brother or big benefit?. Interview by Martin Vousden. PMID- 3849776 TI - Legislation. 4. The radical years. PMID- 3849777 TI - Stoma care. 1. Selecting a site. PMID- 3849778 TI - Nurses in society. Getting into print. PMID- 3849779 TI - Management. A team approach to selection. PMID- 3849781 TI - Practice. A sore point. PMID- 3849780 TI - Making a valid point. PMID- 3849782 TI - Professional probe. 3. Catering for the patient. Interview by Catharine Sadler. PMID- 3849783 TI - Clinical revision series. 17. Preparing to die. PMID- 3849784 TI - Midwifery. A family affair. PMID- 3849785 TI - Education. Opting for optimum numbers. PMID- 3849786 TI - It's time to admit our weaknesses. PMID- 3849787 TI - Fighting for health in Afghanistan. PMID- 3849788 TI - The organization and operation of oncology units. PMID- 3849789 TI - Family perceptions: the role of the nurse throughout an adult's cancer experience. PMID- 3849791 TI - The development of an antineoplastic drug education program. PMID- 3849790 TI - Implementing the ONS education standards. An oncology clinical elective. PMID- 3849792 TI - Evolving patient education needs in cancer. PMID- 3849793 TI - Outcome standards for public cancer education: the Foundation for Community Education Programs. PMID- 3849794 TI - Ovarian cancer: patient information booklet. PMID- 3849795 TI - Try, try again. PMID- 3849796 TI - Choosing multiple instruments to measure the quality of life. PMID- 3849797 TI - Recommendations for controlling costs in the university teaching hospital operating room. PMID- 3849798 TI - Implementing cost containment: conceptual approaches, role of staff, and key challenges. PMID- 3849799 TI - Enhancing relations between the operating room and central supply. PMID- 3849801 TI - Professional survival tips: organizing a vendor fair. PMID- 3849802 TI - Research: from concept to variable. PMID- 3849800 TI - Innovations and excellence: quality ambulatory surgery. PMID- 3849803 TI - Tissue kallikrein levels and synthesis rates are not changed by an acute physiological dose of aldosterone. AB - Tissue kallikrein content and rate of synthesis have been measured in the kidney and submaxillary gland of the rat after a single physiological dose of aldosterone, and during the time in which the physiological effects of aldosterone are evident. No change in the renal cortical tissue content of immunoreactive kallikrein, in either adrenalectomized or sham-operated animals, was seen within 3 hr of the administration of aldosterone. The kininogenase activity of these samples also did not change. The rates of kallikrein synthesis in the submaxillary gland and the whole kidney were measured by specific immunoprecipitation of kallikrein after 20 min of [35S]methionine incorporation, and again no aldosterone effect was seen. We conclude that, under the conditions of these experiments, aldosterone does not induce the synthesis of tissue kallikrein in either the submaxillary gland or the kidney. PMID- 3849804 TI - Biochemical properties and possible therapeutic role of the elastase inhibitor eglin C. PMID- 3849805 TI - A rate of return analysis of the nursing profession in the Philippines. PMID- 3849807 TI - On the labor front. PMID- 3849806 TI - A study on the perceptions of nurses in a tertiary hospital on strike. PMID- 3849808 TI - The Mobile Nursing Clinic: a model health care facility for providing primary health care services to three selected communities in Benguet Province, Northern Luzon, Philippines. PMID- 3849809 TI - A report on the implementation of the new BSN curriculum. PMID- 3849810 TI - [Our postulates]. PMID- 3849811 TI - [Diagnosis once more]. PMID- 3849812 TI - [Nursing diagnosis from a different view]. PMID- 3849813 TI - [Program '85]. PMID- 3849814 TI - [How much does health cost. 2. The financing of health care]. PMID- 3849816 TI - [Councillor. Interview by Henryk Gluza]. PMID- 3849815 TI - [Psychological aspects of cerebral stroke]. PMID- 3849817 TI - [The most difficult aspect of personnel. Interview by Maria Lesnikowska]. PMID- 3849818 TI - [Accessible care. Interview by I. Krysiak]. PMID- 3849819 TI - [Surgical treatment of obesity]. PMID- 3849820 TI - [You can see yourself better in eyeglasses]. PMID- 3849822 TI - The role of the professional association provider. PMID- 3849821 TI - [How to plan the number of personnel?]. PMID- 3849823 TI - Dual trauma of spinal cord injury in adolescence. PMID- 3849824 TI - Maximizing learning in the adult with SCI. PMID- 3849825 TI - Bridge building--linking a spinal cord unit to a skilled nursing facility. PMID- 3849826 TI - Components of rehabilitation nursing practice advancement. PMID- 3849827 TI - The value of physical therapy in improving gait in multiple sclerosis: a research design. PMID- 3849828 TI - Sexual dysfunction after treatment for genitourinary cancers. PMID- 3849829 TI - The effect of cancer therapy on gonadal function. PMID- 3849830 TI - Pregnancy and cancer. PMID- 3849831 TI - Sexuality and the adolescent with cancer. PMID- 3849832 TI - Sexuality and the elderly cancer patient. PMID- 3849833 TI - Understanding sexuality in progressive cancer. PMID- 3849834 TI - The sexual knowledge and attitudes of oncology nurses: implications for nursing education. PMID- 3849835 TI - Sexual assessment and counseling. PMID- 3849836 TI - Nursing assessment of cancer pain. PMID- 3849837 TI - The child who is hurting. PMID- 3849838 TI - The evolving role of the oncology nurse in managing cancer pain. PMID- 3849839 TI - Cancer pain. PMID- 3849840 TI - The perception and experience of pain. PMID- 3849841 TI - Measurement and prevalence of pain in cancer. PMID- 3849842 TI - Pain in patients with cancer: profile of patients and common pain syndromes. PMID- 3849843 TI - [The lower urogenital tract in man (3). Testicle, epididymis, vas deferens]. PMID- 3849844 TI - [Role of the circulating nurse]. PMID- 3849845 TI - [Tympanoplasty. Closed surgical technics]. PMID- 3849846 TI - [Tympanoplasty. Non-conservative or open technics]. PMID- 3849848 TI - [Complications of tympanoplasty]. PMID- 3849847 TI - [Tympanoplasty. Postoperative care]. PMID- 3849849 TI - [Homograft failures]. PMID- 3849850 TI - [Role of the nurse with a patient before tympanoplasty surgery]. PMID- 3849851 TI - [Report of a case. Curettage and tympanoplasty in an adult]. PMID- 3849852 TI - [Report of a case: tympanoplasty in a child]. PMID- 3849853 TI - [Antiseptics. Prevention and treatment of surgical infection using antiseptics]. PMID- 3849854 TI - [Health: a multidisciplinary matter]. PMID- 3849856 TI - [Drug trials in man]. PMID- 3849855 TI - [Change and resistance to change in a health care unit]. PMID- 3849857 TI - [Crohn's disease]. PMID- 3849858 TI - [Acute dyspnea in infants]. PMID- 3849859 TI - [Continuing professional education]. PMID- 3849860 TI - [Psychiatry and departmentalization. Nursing care and mental health]. PMID- 3849861 TI - [Clear-fluid meningitis and meningoencephalitis]. PMID- 3849862 TI - [When pregnancy can't rhyme with youth]. PMID- 3849863 TI - [Cirrhosis of the liver]. PMID- 3849864 TI - [Alcohol, tobacco and drugs]. PMID- 3849865 TI - [Vaccination]. PMID- 3849866 TI - [Foods (I)]. PMID- 3849868 TI - [The importance of hand hygiene in the assessment of hospital infection]. PMID- 3849867 TI - [Deep venous thrombosis]. PMID- 3849869 TI - [Transplantation]. PMID- 3849870 TI - [Legislative role and administrative organization of organ transplants]. PMID- 3849871 TI - Where hospitals will get ICU nurses. PMID- 3849872 TI - When you need drive to get ahead. PMID- 3849873 TI - If a patient keeps coming back. PMID- 3849874 TI - How wide is the generation gap in nursing? PMID- 3849875 TI - Step-by-step guide to trouble-free IV chemotherapy. PMID- 3849876 TI - What will you do after CPR? A self-test. PMID- 3849877 TI - How to use an implantable infusion pump. PMID- 3849878 TI - Which postop patient faces the greatest respiratory risk? PMID- 3849880 TI - Deep breathing and coughing: how to do them right. PMID- 3849879 TI - If your patient does suffer respiratory failure. PMID- 3849881 TI - The patient on a ventilator. PMID- 3849882 TI - Electroshock: exploding the myth. PMID- 3849883 TI - The patient who wants help with a will. PMID- 3849884 TI - Hypertension: salt isn't the only culprit. PMID- 3849885 TI - Making mRNA from a pair of precursors. PMID- 3849886 TI - [Nursing care: hemoculture]. PMID- 3849887 TI - [Epidemiology and treatment of chronic alcoholism. Prospective study in a medical unit at Saint-Brieuc]. PMID- 3849888 TI - [Cost of nursing care for hospitalized alcoholics in a hepatology unit. Methods of investigation and evaluation]. PMID- 3849889 TI - [Caroli disease]. PMID- 3849890 TI - [Viral hepatitis B. A major occupational risk for nursing staff]. PMID- 3849891 TI - [Differences between the management of alcoholism and substance abuse]. PMID- 3849893 TI - [Occupational medicine (3). Activities of the nurse, of the medical secretary, and of first-aid personnel]. PMID- 3849892 TI - [Is the drug addict a patient like others? Comparative experience in 2 hepatology units in Marseille and Paris]. PMID- 3849894 TI - [Prantal]. PMID- 3849895 TI - [Aluminum cataplasm]. PMID- 3849896 TI - [Hyperleukocytosis due to an increase in granulocytes]. PMID- 3849897 TI - [Hypergranulocytosis. Neutropenia]. PMID- 3849898 TI - [Neutropathy]. PMID- 3849899 TI - [Hyperleukocytosis associated with polycythemia. Case report]. PMID- 3849900 TI - [Granulocytes or polynuclear cells, neutrophils, eosinophils, basophils]. PMID- 3849901 TI - [A new internship. What you should know about the reform of the 3rd cycle of medical studies]. PMID- 3849902 TI - [Temesta]. PMID- 3849903 TI - [Witchcraft: parallel practice]. PMID- 3849904 TI - [Overview of Portuguese migrants' psychopathology]. PMID- 3849905 TI - [An experience of a supervisor in psychiatry]. PMID- 3849906 TI - [Ethnopsychiatry. Introduction]. PMID- 3849907 TI - [Hidden depression in children]. PMID- 3849908 TI - [The psychiatrist's approach to injuries of the cervical spine]. PMID- 3849909 TI - [Chronic hallucinatory psychosis. Not to be confused with persecution melancholy and paranoid schizophrenic delirium]. PMID- 3849910 TI - [Theoretic aspects of ethnopsychiatry]. PMID- 3849911 TI - [The nurse in an isolated post faced with diseases of the nose and its adnexa]. PMID- 3849912 TI - [The nurse in an isolated post faced with ear pathology]. PMID- 3849913 TI - [Noma]. PMID- 3849914 TI - [The nurse in an isolated or jungle post faced with upper digestive system pathology]. PMID- 3849915 TI - The dichotomy of the nurse manager. PMID- 3849916 TI - Ethnicity and nursing practice. PMID- 3849917 TI - Nursing and the Afro-American client. PMID- 3849918 TI - Providing health care to Chinese clients. PMID- 3849919 TI - Beliefs about treatment of hypertension among Hispanic older persons. PMID- 3849920 TI - Perceptions of health: Navajo indians. PMID- 3849921 TI - Susto and the health needs of the Cuban refugee population. PMID- 3849922 TI - Culturally appropriate care: the case of immigrants. PMID- 3849923 TI - The influence of religious beliefs on health choices of Afro-Americans. PMID- 3849924 TI - A family assessment challenge: refugee youth and foster family adaptation. PMID- 3849925 TI - Mediating between two views of illnesses. PMID- 3849926 TI - Transcending cultural bias: the literature speaks. PMID- 3849927 TI - [Purification and some properties of human plasma kallikrein]. PMID- 3849928 TI - The kallikrein-kinin system in operated and non-operated patients with acute pancreatitis. AB - The activation of the kallikrein-kinin system is probably one of the pathophysiological factors in acute pancreatitis. The activity of this system was studied in seven patients with fulminant acute pancreatitis treated in the intensive care unit. In four patients the subtotal resection of pancreas was performed. On admission, the activity of plasma prekallikrein, a procompound for the enzyme kallikrein, was low, and urine kallikrein activity was high. The level of plasma kininogen, a substrate for kinin formation, was low. All these findings point out to an activation of the kallikrein-kinin system in acute pancreatitis. During the recovery from the disease, the changes in the activity of kallikrein kinin system were restored in all the five survivors but not in the two non survivors. The subtotal resection of pancreas had no consistent effect on the kallikrein-kinin system. PMID- 3849929 TI - On-target oncology information. PMID- 3849930 TI - Abused women and chronic pain. PMID- 3849931 TI - The pen is mightier than ... PMID- 3849932 TI - Not murder--just nothing. PMID- 3849933 TI - Union busters. PMID- 3849934 TI - Assessing the elderly. 1. System by system. PMID- 3849935 TI - The Army Nurse Corps. A decade of change. PMID- 3849936 TI - SNAs seek ways to put title, degree requirements into system. PMID- 3849937 TI - Nurse helps young patients face cancer. Interview by Terry L. Selby. PMID- 3849938 TI - Delegates hear survey results: people trust nurses to do more. PMID- 3849939 TI - 5 House members talk about what was important. PMID- 3849940 TI - ANA officials discuss issues raised by title choice. PMID- 3849941 TI - Setback stalls ANA efforts in support of nurse midwives. PMID- 3849942 TI - Computers are helping nurses do their job better, faster. PMID- 3849944 TI - Caring must be central when we choose nursing. PMID- 3849943 TI - Range of opportunities attracts students to careers in nursing. PMID- 3849945 TI - Seven nurses share wise words with beginning RNs. PMID- 3849946 TI - Job flexibility attracted NSNA president to nursing. PMID- 3849947 TI - Appeals Court overturns ruling on comparable worth. PMID- 3849948 TI - Prekallikrein (Fletcher factor) deficiency. AB - One new case and 29 reported cases of hereditary prekallikrein (Fletcher factor) deficiency are reviewed. Abnormalities in the coagulation, fibrinolytic, complement, and kinin systems are described. These cases are discovered incidentally by prolonged partial thromboplastin times (PTTs) which correct with extended incubation in the presence of a contact activator. Prekallikrein levels are less than two percent of normal levels. In general, the remainder of the coagulation profile is normal, and no bleeding diathesis is present. Most patients are black and the incidence of consanguinity is increased. The disease is transmitted in an autosomal recessive manner. Acquired Fletcher factor disease is a moderate prekallikrein deficiency present in many common disease states. Its clinical significance is largely unknown. Both acquired and hereditary forms may rarely predispose to thrombotic phenomena. PMID- 3849949 TI - Radial keratotomy. New help for patients with myopia. PMID- 3849951 TI - Australian nursing. A US nurse visits a Queensland hospital. PMID- 3849950 TI - Radial keratotomy: personal case study. PMID- 3849952 TI - Give publishing a try. Step-by-step guidelines for would-be writers. PMID- 3849953 TI - Intraoperative hypothermia. A review of measures to protect patients. PMID- 3849954 TI - Communicating in the OR. Part III: Confrontation. PMID- 3849955 TI - Ethics. Deciding whether to give or withhold information. PMID- 3849956 TI - Nurses speaking out for patients and the profession. PMID- 3849957 TI - Quality of life: a patient's perspective. PMID- 3849958 TI - Nursing administrators' perspective on the U.S.S.R health system. PMID- 3849959 TI - Nephrology nursing consult: case study. Preparing an autistic child for hemodialysis. PMID- 3849960 TI - On rehabilitating clients with end stage renal disease. PMID- 3849961 TI - Relocation of the older person in the health care system. PMID- 3849963 TI - The touching process in rehabilitation. PMID- 3849962 TI - Laxatives. Part two. PMID- 3849964 TI - The dilemma of assessment. PMID- 3849965 TI - Biofeedback: the ultimate placebo? PMID- 3849966 TI - Wound healing in the elderly--a problem solving approach. PMID- 3849967 TI - Nurse & the law. Cervical screening: a test in several ways. PMID- 3849968 TI - Essential job needs essential training. PMID- 3849969 TI - Fatty acid peptide derivatives as model compounds to protect elastin against degradation by elastases. AB - Peptide sequences which fit the extended binding sites of porcine pancreatic elastase and human leukocyte elastase were covalently coupled to oleic acid. These compounds behave as competitive inhibitors towards both elastases. The coupling of fatty acid moiety to the peptide greatly decreases its inhibitor constant (Ki) vs human leukocyte elastase (Ki for Oleoyl(Ala)2ProValine: 3.0 (10( 6)M). It is less active on porcine pancreatic elastase (Ki for Oleoyl(Ala)2ProAlanine: 3.8 10(-4)M). The modifications of the carboxylic end group of the peptide to an aldehyde further greatly enhanced the inhibition capacity of the compound towards leukocyte elastase (Ki for Oleoyl(Ala)2ProAlaninal: 0.7 microM). Oleoyl peptide derivatives were seen to bind in a saturable fashion to purified insoluble elastin, and decreased the susceptibility of the macromolecule to hydrolysis by both pancreatic and leukocyte elastases. As stoichiometric quantities of elastase (vs inhibitor) could not desorb 3H-oleoyl(Ala)2Pro-Val bound to insoluble elastin, it is postulated that oleoyl peptide derivatives may act as bifunctional agents. This contention was further strengthened by the comparison of the adsorption curves of elastase to untreated insoluble elastin and elastin saturated with oleoyl peptide derivatives respectively. It was shown finally that Oleoyl(Ala)2Pro-Valine was also capable of inhibiting elastases in their adsorbed form to insoluble elastin. PMID- 3849971 TI - Recent trends in cesarean delivery rates in California. PMID- 3849970 TI - [Binding of activated C3b component with complement effector]. AB - Various nucleophilic agents (acceptors) react with thiolester group of nascent activated fragment (C3b) of the third complement component. The C3b-acceptors binding prevents transformation of C3 convertase to C5 convertase and results in inhibition of the cell-target lysis. A convenient method of monitoring the EAC142 to EAC1423 transformation was elaborated. Character of the inhibition suggests that the covalent binding follows a stage of the reversible C3b-acceptor complex formation. The method allows to determine the maximum of inhibition of the C5 convertase formation and the dissociation constant of the reversible C3b-acceptor complex, which reflects the C3b affinity to this acceptor. PMID- 3849972 TI - Reconsidering the "market model" in obstetrics. Part II. PMID- 3849973 TI - Antenatal preparation and labor support in relation to birth outcomes. PMID- 3849974 TI - Ventilatory decrements in former asbestos cement workers: a four year follow up. AB - A four year follow up of the ventilatory function in former asbestos cement workers has been performed to determine whether any further decrease occurred after cessation of exposure. Seventy five of 125 subjects were eligible for re examination and were compared with local referents. None showed signs of asbestosis but 32% had pleural plaques at the renewed examination. Cumulative asbestos exposure calculated as fibre x years had been estimated individually in the original examination. After adjustment for age, height, tracheal area, and smoking category the FVC and FEV1 for all exposed subjects were on average 7% v 6% less than predicted from the referents and twice as much for the subjects with the highest exposure. The four year declines in FVC and FEV1 were larger than in the referents, significantly so for FEV1. There were no significant correlations between pleural plaque and ventilatory function after adjustment for exposure. Thus the age adjusted reduction in ventilatory function had progressed during the follow up period despite the cessation of exposure and the lack of radiological signs of asbestosis. PMID- 3849975 TI - Quaternary structure of elastin: characterization of multichain peptide fragments obtained by elastase digestion. PMID- 3849976 TI - Lung reflexes in anaesthetized rabbits with elastase-induced emphysema. AB - The effects of elastase-induced emphysema on vagal pulmonary reflexes were studied in seven rabbits, given 600 IU of porcine pancreatic elastase intratracheally (E group), and eight untreated rabbits (U group) under pentobarbital anaesthesia. The presence of emphysema was confirmed by histological and pathological criteria and by documented changes in lung mechanics seven months after treatment. The strength of the Hering-Breuer inflation reflex (HBIR), indicative of pulmonary stretch receptor excitability, was unchanged in the U group, but was significantly increased in the E group at inflation volumes greater than the tidal volume (VT) range, as she slope of the curve relating HBIR to inflation volume was significantly steeper (0.40 vs 0.22 ml-1; p less than 0.05). The early ventilatory response (first 3 breaths) to right atrial injections of phenyldiguanide (20 and 30 micrograms X kg-1 i.v.) was used as an indication of the excitability of lung receptors with non-myelinated vagal afferents. This response, characterized by a significant decrease in expiratory duration (TE) without effect on VT or inspiratory time (TI), was not significantly different between the E and U groups. The overall pattern of breathing in the E group showed a significant decrease in VT associated with an increase in TI. PMID- 3849977 TI - Presence of normal human cell surface antigens in plasma of athymic mice bearing a human colon carcinoma and in normal human plasma. AB - The mixed haemadsorption (MHA) method was employed for detection of several normal antigenic components on the surface of human colon carcinoma cells (HT 29). The antigens were expressed by cells in monolayer cultures and in suspensions prepared by monolayer trypsinization, and by cells of tumours growing progressively in athymic mice. The plasma of such animals bearing medium sized and large, non-necrotic tumours contained all the antigens, as determined by the radial diffusion immune haemolysis method (RDIH); the plasma of animals with small or large heavily necrotic tumours did not contain detectable amounts of any of the determinants. The half-life of the determinants in the circulation as extracellular entities was ca. 20 h. The same antigens, and fibronectin, were found to be ubiquitously represented in normal human plasma. It is proposed that the presence of membrane antigens in plasma is the result of physiological shedding of cell surface constituents by living cells. PMID- 3849978 TI - Phagocytic activity of alveolar macrophages in patients with bronchogenic carcinoma. AB - Human bronchoalveolar cells were obtained by lavage during diagnostic fiberoptic bronchoscopy of 21 patients suspected of having lung malignancies. Of these patients 11 were diagnosed as having primary lung cancer (Group I) and included individuals with squamous cell carcinoma, adenocarcinoma, undifferentiated large and oat cell carcinoma at varying locations and TNM stages, 4 patients demonstrated nonprimary metastatic carcinoma (Group II), and 6 patients did not reveal detectable tumors by bronchoscopy or follow-up (Group III) and were included as study controls. We examined the ability of pulmonary alveolar macrophages (PAMs) lavaged from patients in each of the three study groups to phagocytose opsonized sheep red blood cells. Phagocytic activity varied among patients in the same and different study groups; however, no significant differences were observed in the phagocytic or tumoristatic activities of PAMs recovered from tumor-bearing and nontumor-bearing lung regions of the same patient. Moreover, lavage fluids collected from tumor-bearing regions did not suppress the phagocytic activity of PAMs collected from control lungs nor lung regions contralateral to the tumor-bearing lung. The data do not support the view that bronchial neoplasms or their secreted products suppress phagocytic functions of alveolar macrophages. PMID- 3849979 TI - Modulation of the immunosuppressive effects of splenic macrophages in Fischer rats bearing adenocarcinoma 13762. AB - The nature of spleen cells in Fischer rats bearing a large size (greater than 1 cm diameter) mammary adenocarcinoma 13762A (MAC) which block the immunostimulating capacities of MTP2 (a synthetic immunomodulator) and suppress proliferation in vitro of splenic T and B lymphocytes by their respective mitogens was investigated. Splenic macrophages were recognized as the suppressor cells by (a) restoration of mitogenic responses by depletion of macrophages from spleen cell suspensions and (b) continued suppressor activity in spleen cell suspensions of tumor bearers devoid of viable T lymphocytes. Macrophage contact with T lymphocytes was required for the inhibition of T lymphocyte proliferation by concanavalin A as shown by (a) the absence of suppressor activity in supernatants derived from cultured suppressor macrophages, (b) lowering of the suppressor activity of intact macrophages after treatment with neuraminidase, (c) lowering of the suppressor activity of macrophages by addition of red cells to spleen cultures of tumor bearers indicating red cell interference with macrophage T cell interaction and (d) lack of inhibiting action of suppressor macrophages on allogenic T lymphocyte proliferation showing macrophage T cell recognition for suppression. Animals bearing a large size tumor exhibited spleen hypertrophy and an increase in macrophage: lymphocyte ratio and a decrease in red cell: lymphocyte ratio. Splenic macrophages did not appear to be implicated in blocking antitumor immunity induction since (a) suppressor macrophages were absent in spleens during the inductive phase of the immune response and (b) MAC implanted in allogenic Wistar rats grew to about 2 cm diameter, induced splenic suppressor macrophages but the tumor was later rejected by the animals. Collectively the results suggest that suppressor macrophages are the result of increasing tumor volume rather than its cause. PMID- 3849981 TI - Skin tests with autologous cholesteryl hemisuccinate treated tumour cells in cancer patients. AB - Skin tests with autologous irradiated tumour cells were performed in 20 malignant melanoma, 7 breast and 6 ovarian cancer patients. In the majority of cases evident reaction was noted with cholesteryl hemisuccinate (CHS)-treated cells while the reaction with untreated cells was mostly negative. No correlation was found between this reactivity and the ability of patients to be sensitized to DNCB and to their reactivity to PPD. No correlation was found between reactivity to CHS-treated tumour cells and the stage and course of the disease. PMID- 3849980 TI - Chemoimmunotherapeutic effect of cyclophosphamide on the highly metastatic MAT 13762 tumor. AB - We have observed that cyclophosphamide (CY) treatment of 13762 mammary adenocarcinoma tumor-bearing rats was found to cause tumor regression. Tumor bearing animals cured with three low doses of CY were partially immune against IV and SC challenge with a high dose of 13762 cells. This immune protection mechanism in CY-cured animals appears to be a T (Ig-) cell-mediated response. Irradiated rats reconstituted with CY-cured animal spleen cells were also partially protected against IV and SC challenge with 13762 cells, whereas irradiated rats reconstituted with CY-control animal spleen cells were not. In vitro primary and secondary cell-mediated cytotoxic activity of CY-cured spleen cells against target 13762 cells was low. The possible relevance of this tumor model study is in the understanding of CY-induced tumor immune response and its role in preventing metastases or perhaps recurrent tumor growth. PMID- 3849982 TI - Effects of the removal of adherent and phagocytic cells on the spleen cell lymphoproliferative response of tumor-bearing mice. AB - Cell-mediated immunity was investigated in two BALB/c mouse tumor systems using the lymphoblastogenesis test with phytohemagglutinin as the mitogen. This lymphoproliferative response was quantitated using the Stimulation Index (SI). There was little evidence for suppressor cell activity in cell mixing experiments in which spleen cells from #51 cell-injected mice were mixed with spleen cells from normal mice. Following macrophage removal by Sephadex G-10 columns and carbonyl iron ingestion, there were no significant changes in the SI values for spleen cells from the #51 cell-injected mice. In contrast, spleen cells from mice injected with H238 cells, a herpes virus-transformed cell line, had a significantly lower SI value than that of normal mice. Suppressor cell activity was demonstrated in cell mixing experiments in which spleen cells from H238 cell injected mice were mixed with normal spleen cells. Removal of adherent cells from spleen cells from H238 cell-injected mice by Sephadex G-10 columns restored the SI value to that of normal mice. An increased SI value was also seen after removal of phagocytic cells by carbonyl iron. These results suggested that cells with the functional properties of macrophages played an important part in the immunosuppression observed in the H238 tumor system. Comparison of the two macrophage depletion methods suggested that another cell population was also involved in the suppressive effect. Results of immunofluorescent techniques with anti-Lyt-1 and anti-Lyt-2 monoclonal antibodies show these cells to be Ly 1-, Ly 2,3+ phenotypes of T-lymphocytes. PMID- 3849984 TI - [Use of clinical observations in acute head injuries]. PMID- 3849983 TI - Phosphorylation of nonhistone proteins during premature chromosome condensation in a temperature-sensitive mutant, tsBN2. AB - In tsBN2 cells, a temperature-sensitive (ts) mutant of the BHK21 cell line, with a ts-defect in its regulatory system for chromosome condensation, antigens that react with mitotic specific mouse monoclonal antibody MPM-2 were produced when premature chromosome condensation (PCC) was induced by a temperature shift. The polypeptides of antigens recognized by MPM-2 in tsBN2 cells with PCC were identical to those of antigens in mitotic cells. These antigens appeared concomitantly with chromosome condensation, which suggests that these mitotic specific antigens may be related to chromosome condensation. As the production of mitotic-specific antigens was inhibited by W-7, a specific and potent antagonist of calmodulin, calmodulin may function in the mitotic phosphorylation of nonhistone protein. PMID- 3849985 TI - [Nursing of patients after the surgical treatment of facial nerve paralysis]. PMID- 3849986 TI - [Translabyrinth approach in acoustic neuroma resection]. PMID- 3849987 TI - [Hematoporphyrin derivatives and the laser in orthopedic surgery]. PMID- 3849989 TI - [Surgical treatment of pulmonary bullae and nursing care]. PMID- 3849988 TI - [Nursing care of patients after renal artery embolization]. PMID- 3849990 TI - [Nursing experience before and after operations for cicatricial contracture of neck burns]. PMID- 3849991 TI - [Relation between temperature and pulse rate: 89 patients with pyretic diseases]. PMID- 3849992 TI - [Nursing of diabetic patients treated by continuous subcutaneous insulin infusion]. PMID- 3849993 TI - [Nursing of patients taking Chinese medicinal herbs]. PMID- 3849994 TI - [Relation between the biological clock and chrononursing]. PMID- 3849995 TI - [Heat preservation in neonates]. PMID- 3849996 TI - [Psychological care of sick children]. PMID- 3849997 TI - Ringing in the changes. The implications of the new regulations for the universities. PMID- 3849998 TI - Ringing in the changes. Implications of the new regulations for psychiatric health services. PMID- 3849999 TI - [Care of the mentally retarded child in the community]. PMID- 3850000 TI - [School nursing--an educational challenge]. PMID- 3850001 TI - Reports and memoranda. Communication techniques for effective management. PMID- 3850002 TI - [Clinical teaching: it is easier than you think]. PMID- 3850003 TI - [Suffering]. PMID- 3850004 TI - [A study of factors related to contraceptive dropout: colored women in the metropolitan area of Capetown]. PMID- 3850005 TI - Predictors of student nurse performance. PMID- 3850006 TI - [Computers in nursing. 4. A computer-assisted staffing list]. PMID- 3850007 TI - Ringing in the changes. The implications of the new regulations for the colleges. PMID- 3850008 TI - Urinary kallikrein: assay validation and physiological variability. AB - Decreased urinary kallikrein (UK) output has been suggested as a preclinical indicator of essential hypertension. In preparation for UK studies in hypertension prone Utah kindreds, we assessed selected UK assay parameters and physiological variability. Precision for the colorimetric kallikrein assay was quite acceptable, coefficient of variation (CV) less than 5% within run and 14% day-to-day at a concentration of 9.5 TU/l. The mean recovery was 105% and assay results were correlated with results from the 3H-TAME esterase method, r = 0.990. Urine specimens were stable at room temperature for up to 4 days, frozen at -20 degrees C for 6 weeks, or frozen at -80 degrees C after Sephadex treatment for a year. UK output varied significantly throughout the day with excretion highest in the morning. Urine collections at 10.00, 12.00 and 14.00 had significantly (p less than 0.05) more UK than the overnight collection. Intra- and inter individual variations were of the same magnitude, mean 20%. In children UK output increased with age until the adult levels were reached at age 15. Male and female values were similar. Smoking; consumption of alcohol, coffee, tea, cola of chocolate; and female hormone medications did not significantly influence the 12 hour UK output in the 1110 caucasian subjects. PMID- 3850009 TI - Some anatomical variants and pitfalls in computed tomography of the trachea and mainstem bronchi. I. Mucoid pseudotumors. AB - 472 computed tomographic (CT) examinations in 448 patients were reviewed for mucoid pseudotumors. In 10 patients (2%), an intraluminal density was indirectly proven to be mucous material by negative bronchoscopy and/or repeat CT. Mucoid pseudotumors can easily be differentiated from CT artifacts and from intraluminal neoplasms with extraluminal extension. Differentiation from true intraluminal neoplasmata may be difficult. No definite diagnostic criteria can be proposed since there were no true intraluminal neoplasms present in this series. Nonetheless, several characteristic radiological features of mucoid pseudotumors are discussed. When a potential mucoid pseudotumor is found in a CT examination either the CT scans in question should be repeated after vigorous coughing or an intraluminal neoplasm should be excluded by bronchoscopy. Starting from the CT examination, in the case of bronchogenic carcinoma of the central airways, the intraluminal extent of the tumor might be overestimated due to mucous material proximal to the tumor. PMID- 3850010 TI - Occipital dural arteriovenous fistulas. AB - Occipital dural arteriovenous fistulas are discussed with reference to three cases. Two patients presented classically with pulsatile tinnitus and another one with an occipitally located intracerebral haematoma. The importance of thorough bilateral angiographic investigation including both arterial and venous phases with subtraction is stressed. Embolization of the pathological territory of the external carotid artery is the primary method of treatment, sometimes combined with intraoperative embolization. In comparison, surgical approaches are extensive and do not offer guaranteed success, but could be necessary as an adjunct to embolization. PMID- 3850011 TI - Esophagogastroplasty and its radiological approach. AB - Sixty-six patients with tumor of the distal esophagus and/or the gastric fundus were admitted for intrathoracic esophagogastroplasty. Surgical mortality was 6% (4 of 66 cases). There were 3 early and 7 late complications among the 62 remaining patients. The authors suggest that radiological examinations of patients after esophagogastroplasty should include an early examination on the 7th-10th day after surgery with water-soluble contrast medium for detection of early complications and double-contrast studies before dismissal, at later check ups and whenever clinical symptoms of late complications are developing. PMID- 3850012 TI - Value of radiology in the diagnosis of reflux esophagitis. AB - In a prospective investigation, a relatively low overall sensitivity of radiologic investigation for reflux esophagitis was found (62%). There was, however, a difference between the various stages: in grade I esophagitis the sensitivity was 50%, in grade II 71% and in grade IV 100%. The importance of observation of thickened folds for low-grade esophagitis is emphasized. In addition, the probability of reflux esophagitis in the absence of hiatus hernia was found to be low. In any patient referred for a barium meal attention should also be paid to the lower esophagus. PMID- 3850013 TI - Salmonella typhi pneumonia without gastrointestinal manifestations. AB - Salmonella typhi bacilli were isolated from the pleural aspirate and the blood culture of an 8-year-old girl who presented with clinical and roentgenographic alveolar pneumonia. There was no accompanying gastrointestinal manifestation. The literature on pneumonia in typhoid fever is briefly reviewed. PMID- 3850014 TI - Retrosomatic cleft associated with an invisible lumbar pedicle. AB - The congenital nature of an invisible lumbar pedicle can easily be recognized by several associated characteristic features. This prevents confusion with other pedicular abnormalities or alterations caused by osteolytic metastases or erosion due to soft tissue tumours. A few variants of typical features are described. PMID- 3850015 TI - Some characteristics of local scintigraphic and radiologic patterns of Paget's disease of bone (osteitis deformans). PMID- 3850016 TI - Planning a cohort or case-control study with allowance for cost and test power. AB - This paper deals with balanced and unbalanced allocation designs in cohort and case-control studies. It focuses on: determination of the equal sample size design given the relative risk, R, of disease, the incidence of disease among the nonexposed group or the prevalence of exposure to risk factor, P1, type I and II errors alpha, beta; estimation of the unequal allocation designs that either maximize the test power subject to fixed total cost or minimize the total study expenditure subject to prespecified power using the simplex procedure for function minimization; assessing the efficiency of different allocation designs by computing the power of the exact conditional (Fisher-Irwin) test for comparing two proportions. PMID- 3850017 TI - A program to measure time intervals between R wave peaks in real-time mode. AB - Assuming a sampling rate of electrocardiograms of 200/s, the time interval between two successive analog-to-digital conversions is 5 ms. We present a program which recognizes R wave peaks of electrocardiograms and measures R-R time intervals within this critical period. The program is written in assembly language and run on a PDP-12. The cycle time is 1.6 microseconds and most instructions require one to three cycles for execution in the computer used. Since the whole sequence of this program is executable in about 160 microseconds, electrocardiograms recorded on a data recorder can be analysed 31 times faster than recording speed. For application of this routine, we present a program for displaying an R-R interval histogram and a joint interval histogram. PMID- 3850018 TI - A computer program for an illness-death process with time-dependent covariates. AB - This paper presents a computer program for estimating transition probabilities between states in a stochastic model for an illness-death process which incorporates time-dependent covariates. Parameters are estimated by the method of maximum likelihood using the Newton-Raphson iterative procedure. The program provides the standard normal deviate statistics as well as the value of the maximum of the likelihood function which can be used on repeated applications to test hypotheses concerning coefficients associated with covariates. Although this program is demonstrated by using a model with two 'illness' states and two 'death' states, it is also suitable for analyzing data with models involving fewer states, such as the analysis of survival time with covariates assuming a proportional hazard model. PMID- 3850019 TI - A curve analyzer for micro-computers. AB - A computer program is described that emulates a curve analyzer and fits a sum of up to 30 Gaussian components plus a straight background to any set of equi-spaced data points. The program allows interactive, real time curve fitting by the operator and/or objective curve fitting using a non-linear least squares fitting routine, or a combination of the two. The program is more robust in a micro computer environment than subtractive or generalized non-linear least squares methods and faster than pattern searching methods. The program has been used over the last 4 years in my laboratory by a number of personnel without any previous experience of computers. It is written in BASIC and runs on a Hewlett-Packard series 200 model 16S (9816) computer or on a Hewlett-Packard model 9845S computer. The program is structured to allow use of any underlying curve shape with 3 parameters per component. PMID- 3850020 TI - JANA: a new iterative polyexponential curve stripping program. AB - A new iterative polyexponential curve stripping technique for the provision of initial pharmacokinetic parameter estimates has been developed. Such estimates are required for nonlinear least-squares curve fitting. In contrast to conventional curve stripping, this new technique does not make any assumption about the relative magnitudes of the exponential rate constants. Hence, the parameter estimates which it provides are free of the bias which may arise in conventional curve stripping. A BASIC program called JANA has been developed to implement the new curve stripping procedure. PMID- 3850021 TI - Those that can, teach--the clinical nurse specialist in a joint appointment. PMID- 3850022 TI - A day in the life of Christine Craig, R.N. PMID- 3850023 TI - Artificial surfactant in preterm rabbits with and without respiratory distress syndrome: difference of in vitro and in vivo activities. AB - Sixty-eight rabbit fetuses of 27 days gestation were tracheotomised, artificially ventilated, and their lung mechanics studied in a body-enclosing plethysmograph. The animals were treated by tracheal instillation of natural surfactant concentrate or large unilamellar vesicles containing dipalmitoylphosphatidylcholine:egg phosphatidylglycerol, 9:1. Both preparations were highly surface active in terms of film adsorption and surface tension lowering potential. Before treatment, the lung mechanics were analysed to indicate the presence of respiratory distress syndrome (RDS). Controls received 0.15 M saline. Differences were found between the in vitro and in vivo activities of both preparations in some animals. In 30 preterm animals with partial lung maturity and without respiratory distress syndrome, no significant effect could be achieved with either the natural or the artificial surfactant. In 38 animals with severe RDS, the tidal volume and compliance increased markedly within 15 min of substitution of both preparations. Compliance increased to 178% of the initial value in ventilated, control animals, to 391% in animals treated with natural, and to 344% in animals treated with artificial surfactant. PMID- 3850024 TI - Effects of season, environmental temperature, size of dams, and age of breeder males on numbers of embryos obtainable from superovulated mice. AB - Four factors were tested for their effects on numbers of embryos obtainable from mice injected with pregnant mare serum gonadotropin (PMSG) and human chorionic gonadotropin (hCG) to induce superovulation. The factors tested were: (1) season of year; (2) environmental temperature (in the range of 17.8-23.7 degrees C); (3) age of breeder male mice (in the range of 10-76 weeks); and (4) size of female mice (in the range of 16-30 g body weight). Each of the first three factors was tested for its effect on mating and consequently on embryo yield; the fourth was tested for its effect on numbers of embryos yielded by those females that did mate. In all experiments hybrid female mice (C57BL/6J X CBA/J) were injected with 5 IU of PMSG and 5 IU of hCG and were crossed with males of the CD-1 strain. None of the factors tested was found to have a statistically significant effect on embryo yield. Other factors that should be examined for their effects on mating and/or ovulation are discussed. PMID- 3850025 TI - Entrainment of the circadian rhythm in the locomotor activity of Mus booduga by red and white light. AB - The role of red light (greater than 610 nm) and white incandescent light in entraining the circadian locomotor activity rhythm of the field mouse Mus booduga has been studied using different light intensities. Red light of less than 150 microW/cm2 caused negative masking and greater than 150 microW/cm2 caused entrainment. Such intensity dependent masking and entrainment were also obtained with white incandescent light. PMID- 3850026 TI - Effects of caffeine and theophylline on the fecundity of four lepidopteran species. AB - Effects of secondary plant metabolites (caffeine and theophylline on reproduction of lepidopteran species were studied using Bombyx mori, Spodoptera litura, Danaus chrysippus and Catopsilia crocale as test organisms. Reproductive potential (ovary length and egg number) was significantly reduced in the lepidopterans receiving caffeine/theophylline treated leaves in comparison to the control. Protein and energy contents in the egg of the moths showed remarkable decrease with increasing concentrations of secondary plant metabolites in the feed. However, fat content remained almost constant in the egg of control and experimental animals. PMID- 3850027 TI - The visual pigments of the weever fish, Trachinus vipera: a microspectrophotometric study. AB - Microspectrophotometric analyses of the visual pigments of the weever fish, Trachinus vipera, demonstrate the presence of a rhodopsin with peak sensitivity at 502 nm, and two cone visual pigments. Identical twin cones are green-sensitive containing a P5281, and single cones are blue-sensitive containing a P4401. The dichromacy of the weever is discussed in relation to its photic environment and feeding behaviour. PMID- 3850028 TI - Telencephalic afferent projections from the diencephalon and brainstem in the pigeon. A retrograde multiple-label fluorescent study. AB - The sites of origin of ascending projections to the telencephalon in the pigeon (Columba livia) were studied by means of the retrograde fluorescence technique following the injection of various tracers (Evans Blue, Fast Blue, Nuclear Yellow) concomitantly into different regions of topographically distinct areas of one hemisphere: hyperstriatum (HY), ectostriatum-paleostriatum (EP), posterior neostriatum (PN). The distribution of retrograde neuronal labeling observed within diencephalic and midbrain structures revealed systems providing unique projections to either a single or a multiple combination of the different telencephalic sites sampled. Single projections to HY arise from numerous dorsal thalamic nuclei including: ipsilaterally-dorsolateralis anterior pars medialis, dorsointermedius posterior, dorsomedialis anterior and posterior and bilaterally dorsolateralis anterior and superficialis parvocellularis. Single ipsilateral projections upon either the ectostriatum or the caudal neostriatum arise from the nucleus (n.) rotundus/n. triangularis complex and the n. ovoidalis respectively. Multiple ipsilateral afferents to both HY and the neostriatum intermedium stem from rostral and caudal portions of the n. dorsolateralis posterior respectively, whereas the n. subrotundus projects to all of the telencephalic sites examined. Within midbrain/caudal brainstem regions, the area ventralis-Tsai sends afferents to HY and EP and multiple projections upon the latter in addition to the PN site originate in ipsilateral: zona perinervus oculomotorius, the lateral and medial mesencephalic reticular formation, n. tegmenti pedunculo-pontinus pars compacta and bilateral: zona peri-fasciculus longitudinalis medialis, substantia grisea centralis, n. locus coeruleus, n. annularis, n. linearis caudalis. In the case of the latter structures, the multiple-label procedure also made it possible to demonstrate differential distributions of the component populations of neurons whose axons terminate within distinct telencephalic sites and those which display multiple projections via collateral axon branching. Various neuronal systems projecting to the avian telencephalon are compared to those of other vertebrates and possible homologies in telencephalic afferent organization are discussed. PMID- 3850029 TI - [Endometriosis]. PMID- 3850030 TI - [Herpetic eye lesions]. PMID- 3850032 TI - [The large-circulation newspaper and radio centers in health propaganda]. PMID- 3850031 TI - [Cardiogenic shock]. PMID- 3850033 TI - [Current problems of prosthetic and orthopedic care and the dispensary care of patients with limb stumps]. PMID- 3850034 TI - [Motion pictures on health protection]. PMID- 3850035 TI - [Experience in using the problem-oriented method of instruction in practical exercises in surgery]. PMID- 3850036 TI - [Utilization of the remaining work capacity of commercial forestry farm workers with hand injuries]. PMID- 3850037 TI - [Anemia and pregnancy]. PMID- 3850038 TI - [Tonsillogenic sepsis]. PMID- 3850039 TI - [Acute endometritis and salpino-oophoritis following an artificial abortion]. PMID- 3850040 TI - [Prevention of miscarriage]. PMID- 3850041 TI - [Massage in humeroscapular periarthritis]. PMID- 3850042 TI - A method of giving intershift report based on a conceptual model. PMID- 3850043 TI - Cardiac electrophysiologic mapping techniques. PMID- 3850045 TI - Family-centered critical care nursing. PMID- 3850044 TI - Encouraging involvement in the political process. PMID- 3850046 TI - DNR decisions revisited. PMID- 3850047 TI - Thanks, Floyd. PMID- 3850048 TI - Part two. Statement on ethics in critical care research. From the AACN Task Force on Ethics in Critical Care Research. PMID- 3850050 TI - "Living will" can relieve legal consequences of dying. PMID- 3850049 TI - Mandatory continuing education: should we or shouldn't we? PMID- 3850051 TI - A close up look at another nurse entrepreneur--Chea Haran, ARNP. PMID- 3850052 TI - South Florida nurses' perspective on job satisfaction. PMID- 3850053 TI - President's message. PMID- 3850054 TI - The computer is down. PMID- 3850055 TI - Circadian rhythms: basis for screening for fever. PMID- 3850056 TI - Comparable worth: a brief explanation. PMID- 3850057 TI - Structural and functional similarities between the major hemolymph protein of fall armyworm and cat C4 binding protein of the complement system. AB - We have investigated the structural and functional similarities between insect (armyworm) major larval serum protein (LSP-I) and mammalian (Cat) C4 binding protein (i) by comparing the major chymotryptic peptide patterns using sodium dodecyl sulfate polyacrylamide gel electrophoresis and (ii) their ability to prevent assembly of classical C3 convertase (EAC142). Both Cat C4 bp and Spodoptera LSP-I are composed of identical subunits of Mr = 75,000 and Mr = 80,000, respectively and generate the characteristic cleavage product of Mr = 50,000 on limited proteolysis. These observations are interpreted as an indication that the major hemolymph protein (LSP-I) of fall armyworm is a homologue of the C4bp of the mammalian complement system. PMID- 3850058 TI - Hot weather blues: heat-related illness. PMID- 3850059 TI - Blessings and curses of summer. PMID- 3850060 TI - Titling and licensure. PMID- 3850061 TI - The danger of diving. PMID- 3850062 TI - Pay equity: a matter of simple fairness. PMID- 3850063 TI - Ethical decision making. Part 3. A look at the future. PMID- 3850064 TI - [Patient Relations Services. A new function at the heart of ward units to respond to the needs on the patient and his family]. PMID- 3850065 TI - [The ages of life]. PMID- 3850066 TI - [Causes of death in general medicine]. PMID- 3850068 TI - [Child development]. PMID- 3850067 TI - [Zona]. PMID- 3850069 TI - [Drug therapy of cancer]. PMID- 3850070 TI - The President's message. The future of the profession. PMID- 3850071 TI - The professional evaluation. The personal assessment. PMID- 3850072 TI - Conference on burnout. PMID- 3850073 TI - Continuing education. Exercises during illness. PMID- 3850074 TI - A review of the nursing literature on attitudes towards old people. AB - This paper reviews recent research in the area of nurses' attitudes towards old people. Published work is categorized into that dealing with the effects on attitudes of characteristics of the nurses being studied, characteristics of the patients, intervention programmes and related attitudes held by the nurses. British and American work is considered. Much of the published work reviewed is found to be lacking in one or more respects. These shortcomings relate to sampling, design features, measures used and data analysis. It is concluded that research in the area will need to be improved if major policy decisions concerning the care of the elderly are to be well-informed. PMID- 3850075 TI - Hospital care of the elderly--modelling the relationship between direct nursing care and patient disability. PMID- 3850076 TI - Domestic animal visitation as therapy with adult home residents. PMID- 3850078 TI - Nurses' uniform: an investigation of mobility. AB - An investigation of the mobility of nurses under three clothing conditions is reported. The need for such a study has arisen as a result of the concern over a possible mismatch between mobility and patient handling requirements. Thirty seven nurses participated under two of the clothing conditions ('National' dress uniform, Trouser/tunic combination). In addition, ten of these nurses volunteered to provide control data by being measured in a leotard or a swimming costume. Eleven static and sixteen dynamic anthropometric measures were considered. Each nurse was asked to complete a short questionnaire, relating to her subjective attitudes to the uniform and to her own physical state at the time of measurement. Whilst both uniforms imposed restrictions on the shoulder girdle and trunk of up to 10%, the area of greatest concern was the mobility of the hip joint. Hip flexion was reduced by 26% in the dress uniform. The implications of these findings for patient handling procedures are discussed, as are those of the relationship between the environment and the material. Uniform and the nursing image is also considered. PMID- 3850077 TI - An ethical analysis of double bind conflicts as experienced by care workers feeding severely demented patients. AB - When patients with incurable dementia diseases no longer take food or fluid voluntarily, the care workers experience distress and anxiety. Thirty-nine care workers were interviewed about their thoughts, feelings and attitudes towards feeding severely demented patients. A phenomenological approach was used and the interviews were developed, attention paid to Bateson's double bind theory, Kohlberg's theory of moral development and ethical theories. Ethical theories, principles and rules, containing messages at different logical levels and the lack of empirical knowledge of the demented patients' inner world, led to the care worker's difficult double bind situations. To solve the conflicts the care workers need insight in all aspects of the problem. In order to understand all the components in a double bind situation it is important to redefine it from outside. PMID- 3850079 TI - Crosscultural comparison on nursing image. AB - Conceptual ratings for 'Nurse' and 'Feminine' were investigated across 30 language/culture communities. Data were from Osgood's Atlas of Affective Meanings, which contains ratings of 1200 males from each culture on 620 concepts, using Semantic Differentials. The study provides important information regarding the image of nurses crossculturally and the close link between nursing and femininity. In general, both 'Nurse' and Feminine' were perceived to be good and active, yet weak. A crosscultural view of the nurse as impotent may limit nursing's ability to deliver health care. PMID- 3850080 TI - Occupational ideology and clinical decision-making in British nursing. AB - As the first phase of a study to assess the usefulness of the nursing process model of nursing practice, a survey was carried out in one health district to ascertain the predominant occupational ideology of clinical nurses, their perception of decision-making about individual patient care in everyday work, and their view of whether they ought to exercise a decision-making role with respect to 23 aspects of patient care. Two hundred ideology scale questionnaires were processed, together with perceived and normative decisions inventories. Subjects were representative of six nursing fields, i.e. general nursing, geriatric nursing, psychiatric nursing, mental handicap nursing, health visiting and district nursing. The main findings were that nurses predominantly espouse a professional ideology, they perceive decision-making to be part of their everyday work and contend that they ought to be able to make decisions in 22 out of the 23 areas of patient care included in the inventories. Differences in ideology between the groups and between men and women are identified and discussed, and some areas of role conflict highlighted. The professional ideology was found to correlate significantly with decision-making and a significant correlation was established between paramedicine and bureaucracy. PMID- 3850081 TI - Nursing decision making in a coronary care unit. AB - This study was designed as an approximate replication of a recent Canadian study on a sample of 20 nurses from the coronary care unit of a large teaching hospital in the U.K. Results from this study indicate that knowledge and experience are the two most important factors influencing rapid decision making, and nurses make many rapid decisions in emergency situations prior to seeking medical help. These results are in agreement with those of the original study. PMID- 3850082 TI - The influence of reserpine and propranolol upon the IOP response to vanadate in the rabbit. AB - The authors examined the influence of intravenously administered sodium ortho vanadate upon the intraocular pressure (IOP) of the albino rabbit. Vanadate was administered by intravenous injection and the IOP was measured by applanation tonometry. Vanadate (2 mg/kg) caused a marked reduction of IOP which lasted for several hours. Pretreatment with systemic reserpine 24 hr prior to vanadate administration markedly diminished ocular hypotensive response to vanadate. Similarly, systemic treatment with propranolol prevented the IOP-lowering effect of vanadate. In addition, propranolol administered during the course of the vanadate-induced hypotensive response caused the IOP to return to a level close to the control value. The IOP-lowering effect of vanadate appeared to be unrelated to cardiovascular changes; vanadate was observed to have no significant influence upon the blood pressure of anesthetized animals even though the IOP was markedly reduced. On the basis of these experiments, the authors suggest that adrenergic mechanisms contribute to the IOP-lowering effect of vanadate. PMID- 3850083 TI - In the matter of Claire C. Conroy. PMID- 3850084 TI - Bartling v. Superior Court. PMID- 3850085 TI - Substituted judgment doctrine: a critical analysis. PMID- 3850086 TI - John F. Kennedy Memorial Hospital, Inc. v. Bludworth. PMID- 3850087 TI - In the matter of the guardianship of Joseph Hamlin, an incompetent person. PMID- 3850088 TI - Relation of mevalonate synthesis to mitochondrial ubiquinone content and respiratory function in cultured neuroblastoma cells. AB - The consequence of blocking the de novo synthesis of ubiquinone (coenzyme Q) on mitochondrial ubiquinone content and respiratory function was studied in cultured C1300 (Neuro 2A) murine neuroblastoma cells. Mevinolin, a competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A reductase, was used to suppress the synthesis of mevalonate, an essential precursor for the isoprenoid side chain of ubiquinone. At a concentration of 25 microM, mevinolin completely inhibited the incorporation of [3H]acetate into ubiquinone, isolated from cell extracts by two dimensional thin-layer chromatography. Similar results were obtained when [14C]tyrosine was used as a precursor for the quinone ring. Through the use of reverse-phase thin-layer chromatography, it was established that the principal product of the ubiquinone pathway in murine neuroblastoma cells was ubiquinone-9. Inhibition of ubiquinone synthesis for 24h in cells cultured in the presence of 10% fetal calf serum (which contains 0.14 nmol of ubiquinone/ml of serum) resulted in a 40-57% decline in the concentration of ubiquinone in the mitochondria. However, the activities of succinate-cytochrome c reductase and succinate dehydrogenase in whole-cell homogenates or mitochondria were not inhibited. The state 3 and uncoupled rates of respiration, determined by polarographic measurements of oxygen consumption in homogenates and mitochondria, were elevated slightly in the mevinolin-treated cells. The data demonstrate that, although mevalonate synthesis is important for the maintenance of the intramitochondrial ubiquinone pool in cultured cells, major changes in the ubiquinone content of the mitochondria can occur in intact cells without perturbation of respiratory function. However, the coincidence of decreased mitochondrial ubiquinone concentration and the inhibition of cell cycling previously observed in mevinolin-treated cells (Maltese, W.A. (1984) Biochem. Biophys. Res. Commun. 120, 454-460) suggests that the availability of ubiquinone may play a role in the regulation of mitochondrial and cellular proliferation. PMID- 3850089 TI - Activation of rat liver microsomal 3-hydroxy-3-methylglutaryl coenzyme A reductase by NADPH. Effects of dietary treatments. AB - The sigmoidal curves observed for rat liver microsomal 3-hydroxy-3-methylglutaryl CoA (HMG-CoA) reductase with NADPH as the varied substrate were markedly affected by feeding the animals diets containing colestipol, mevinolin and colestipol or cholesterol. Feeding of mevinolin and colestipol decreased the S0.5 for NADPH from 270 to 40 microM, while cholesterol feeding increased the value to 1.3 mM. Immuno-blotting analysis revealed that the Mr 100,000 form of HMG-CoA reductase predominated in cases where the S0.5 value was lowest, and the Mr 200,000 species was the major form where the S0.5 values were highest. Activation of HMG-CoA reductase by NADPH was not due to conversion of the Mr 200,000 form to the 100,000 form. PMID- 3850090 TI - Protein-protein interactions in contact activation of blood coagulation. Binding of high molecular weight kininogen and the 5-(iodoacetamido) fluorescein-labeled kininogen light chain to prekallikrein, kallikrein, and the separated kallikrein heavy and light chains. AB - Binding of the 5-(iodoacetamido)fluorescein (IAF)-labeled high molecular weight (HMW) kininogen light chain to prekallikrein and D-Phe-Phe-Arg-CH2Cl-inactivated kallikrein was monitored by a 0.040 +/- 0.002 increase in fluorescence anisotropy. Indistinguishable average dissociation constants and stoichiometries of 14 +/- 3 nM and 1.1 +/- 0.1 mol of prekallikrein/mol of IAF-light chain and 17 +/- 3 nM and 0.9 +/- 0.1 mol of kallikrein/mol of IAF-light chain were determined for these interactions at pH 7.4, mu 0.14 and 22 degrees C. Prekallikrein which had been reduced and alkylated in 6 M guanidine HCl lost the ability to increase the fluorescence anisotropy of the IAF-kininogen light chain, suggesting that the native tertiary structure was required for tight binding. The kallikrein heavy and light chains were separated on the basis of the affinity of the heavy chain for HMW-kininogen-Sepharose, after mild reduction and alkylation of kallikrein under nondenaturing conditions. Under these conditions, alkylation with iodo [14C]acetamide demonstrated that only limited chemical modification had occurred. Binding of the IAF-kininogen light chain to the isolated alkylated kallikrein heavy chain, when compared to prekallikrein and kallikrein, was characterized by an indistinguishable increase in fluorescence anisotropy, average dissociation constant of 14 +/- 3 nM, and stoichiometry of 1.2 +/- 0.1 mol of kallikrein heavy chain/mol of IAF-light chain. In contrast, no binding of the D-Phe-Phe-Arg-CH2Cl inactivated kallikrein light chain was detected at concentrations up to 500 nM. Furthermore, 300 nM kallikrein light chain did not affect IAF-kininogen light chain binding to prekallikrein, kallikrein, or the kallikrein heavy chain. The binding of monomeric single chain HMW-kininogen to prekallikrein, kallikrein, and the kallikrein heavy and light chains was studied using the IAF-kininogen light chain as a probe. Analysis of the competitive binding of HMW-kininogen gave average dissociation constants and stoichiometries of 12 +/- 2 nM and 1.2 +/- 0.1 mol of prekallikrein/mol of HMW-kininogen, 15 +/- 2 nM and 1.3 +/- 0.1 mol of kallikrein/mol of HMW-kininogen, 14 +/- 3 nM and 1.4 +/- 0.2 mol of kallikrein heavy chain/mol of HMW-kininogen, and no detectable effect of 300 nM kallikrein light chain on these interactions. We conclude that a specific, nonenzymatic interaction between sites located exclusively on the light chain of HMW-kininogen and the heavy chain of kallikrein or prekallikrein is responsible for the formation of 1:1 noncovalent complexes between these proteins. PMID- 3850091 TI - Phosphate uptake by primary renal proximal tubule cell cultures grown in hormonally defined medium. AB - The uptake of labeled inorganic phosphate into primary rabbit kidney proximal tubule cells has been examined. Phosphate was accumulated into the primary proximal tubule cells against a concentration gradient. This accumulation was sensitive to inhibition by metabolic inhibitors. The dependence of phosphate uptake on the extracellular phosphate concentration was examined. Similarities were observed between primary proximal tubule cells and the LLC-PK1 cell line in these regards. These phosphate uptake data were then plotted on a Lineweaver Burke plot. A nonlinear plot was obtained, which suggested that phosphate uptake occurs by means of a Na+ dependent, carrier mediated process, as well as by another Na+ independent mechanism. The pH dependence of phosphate uptake was also examined. Unlike previous observations with LLC-PK1 cells, optimal phosphate uptake occurred at pH 6.5. However, this difference between the two cell culture systems may possibly be explained by differences in uptake conditions. The dependence of phosphate uptake on the extracellular NaCl concentration was examined at three different pH values. The rate of phosphate uptake at pH 7.0 was observed to saturate at a lower NaCl concentration than at either pH 6.0 or pH 6.5. Furthermore, the optimal rate of phosphate uptake at pH 7.0 was observed to be higher than at the other two pH values studied when the NaCl concentration was below 120 mM. However, when the NaCl concentration was raised to 150 mM, optimal phosphate was observed to occur at pH 6.5 rather than at pH 7.0. These observations may be explained if the pH affects not only the rate of phosphate uptake but also the affinity of the phosphate uptake system for sodium. Phosphate uptake was also observed to be sensitive to several agents, Na2 X SO4 and NaSCN, which affect the membrane potential. As observed with phosphate uptake by LLC-PK1 (and renal brush border membrane vesicles), phosphate uptake was highly sensitive to inhibition by the phosphate analogue arsenate. Novel observations were that the phosphate analogue vanadate and its cellular metabolite vanadyl stimulated the initial rate of phosphate uptake. PMID- 3850092 TI - Extraction model of the longitudinal flagellum of Ceratium tripos (Dinoflagellida): reactivation of flagellar retraction. AB - The mechanism of retraction of the longitudinal flagellum of Ceratium tripos was studied by making extracted models of the flagellum. Non-detergent models extracted in low ionic strength medium containing 1 M-glucose, 10 mM-EDTA, and 50 mM-Tris X HCl buffer (pH 8.0), retracted when Ca2+, Mg2+, Ba2+, Sr2+, Mn2+ or Cd2+ was applied locally with a glass capillary. A demembranated model of the flagellum was made with an extraction medium containing 0.8-1.0 M-glucose, 20 mM Tris-acetate (pH 7.8), 2 mM-EGTA, 5-7 mM-MgSO4, 0.1 M-potassium glutamate and 0.1% Triton X-100. The model required a concentration of Mg2+ of a few mmol/l for successful reactivation of both retraction and undulation, and about 0.1 M potassium glutamate (or sodium glutamate) for reactivation of undulation. Neither type of motion of the models could be reactivated above 35 degrees C. Ca2+ induced the retraction at pCa 5.5 or less. In addition to Ca2+, Mn2+, Ba2+, Sr2+ and Cd2+ also induced retraction but Mg2+, La3+ or Tb3+ did not. Although ATP was required for undulation, it was not required for retraction. Co-incubation with hexokinase to remove contaminating ATP did not suppress the retraction. The potent ATPase inhibitor, orthovanadate, inhibited undulation at 10 micron but did not inhibit retraction even at 2 mM. SH blockers, N-ethylmaleimide and dithio-bis nitrobenzoic acid strongly suppressed undulation but had no effect on retraction. Calmodulin inhibitors, trifluoperazine and chlorpromazine, also had no effect on retraction. These data indicate that undulation is generated by a 9 + 2 microtubular axoneme using energy released by hydrolysis of ATP and that retraction can be induced by Ca2+ without a requirement for ATP. PMID- 3850093 TI - Evaluation of antibiotic susceptibility testing by agar dilution and the Micro Media system (Fox Panel). AB - The susceptibilities of 350 gram-positive cocci and 638 gram-negative bacilli to various antimicrobial agents were compared by using the Micro-Media system (MMS) (Fox Panel) (Micro-Media Systems, Inc., Potomac, Md.) and a standard agar dilution procedure. Major discrepancies occurred with enterococci, among which 48 of 53 isolates (91%) were found to be resistant to penicillin G by agar dilution and reported as susceptible by the MMS. Other large discrepancies occurred with Staphylococcus aureus and Acinetobacter calcoaceticus subsp. anitratus, among which more than 40% of the isolates were judged to be resistant to ampicillin by agar dilution and susceptible by the MMS. In terms of overall agreement in interpretation of MICs by the two systems, an agreement of greater than 84% was seen for both gram-positive and gram-negative organisms when ampicillin and cephalothin (68 and 78% agreement for gram-positive cocci, respectively) were excluded. These disagreements in MIC interpretations may result in part from the small number of organisms tested per well (4,000 CFU) in the MMS, as compared with 10,000 CFU per test in the agar dilution method. PMID- 3850094 TI - Use of the Autobac system for detection of methicillin-resistant Staphylococcus aureus. AB - Using 490 strains of Staphylococcus aureus divided into methicillin-susceptible, resistant, and -heteroresistant varieties, we compared the results obtained by the agar disk method with those obtained with the automated Autobac system. Susceptible strains exhibited a perfect correlation, whereas there were numerous discrepancies with resistant and still more with heteroresistant varieties. When incubation was increased to 18 h at 37 degrees C (Autobac incubation temperature), 35 degrees C, or 30 degrees C, these differences disappeared, but other problems may arise when incubation is prolonged, especially with erythromycin. We thus recommend carrying out two readings, a normal one after 3 h of incubation and a special reading after 18 h, solely for the detection of heteroresistance to methicillin. PMID- 3850095 TI - Burnout in psychiatric nursing. AB - Burnout is a syndrome characterized by progressive physical and emotional exhaustion involving the development of negative job attitudes and perceptions and a loss of empathic concern for patients. It is caused by chronic emotional stress resulting from prolonged intensive involvement with people. If unchecked, burnout will lead to a deterioration in the quality and quantity of nursing care received by patients. This study examines staff burnout among 31 registered psychiatric nurses working in a variety of clinical areas in the hospital setting. The Staff Burnout Scale for Health Professionals (SBS-HP) was used to determine the relationship of SBS-HP scores to respondents age, sex, and area of work. A comparison is made between this study and current research. PMID- 3850096 TI - Lifestyle counselling: the need for diagnostic clarity. AB - Three approaches to changing lifestyle behaviours are hypothesized. The argument that diagnostic accuracy is essential for selection of appropriate nursing interventions is developed and illustrated with clinical examples. The diagnoses of information deficiency, information and behavioural control deficiency, and contextual awareness deficiency guide the interventions for the problem of obesity. PMID- 3850097 TI - A comparison of recovery following hysterectomy and major cardiac surgery. AB - Although monitoring progress is an everyday nursing activity, methods currently employed remain relatively undeveloped. In the past most studies documented physical recovery, tending to focus upon complications such as infection rates, which are quantifiable. Patients' satisfaction with progress is seldom taken into account, although it may provide a more accurate reflection of progress. In this paper, recovery following major cardiac surgery and hysterectomy performed for benign lesions are compared in terms of psychological adjustment to the effects of surgery and resumption of a wide range of activities within and outside the home, in addition to physical progress. On the whole patients accepted the effects of hysterectomy and their own assessments of recovery proved favourable despite considerable residual physical problems of a minor but troublesome nature. In contrast, recovery from cardiac surgery was more difficult and proceeded more slowly, as expected following this major operation. PMID- 3850098 TI - Ethical considerations in nursing practice. AB - Some ethical implications for nursing practice are considered in relation to three issues: competence, honesty and obedience. Factors which contribute to conformity, obedience and authoritarianism are discussed, and respect for other people is suggested as a guiding principle for ethically acceptable conduct. PMID- 3850099 TI - Behavioural training for nurses in mental handicap: an application of the EDY course. AB - The role of the nurse in the care of mentally handicapped people is increasingly one of teaching and training using behavioural methods, as witnessed, for example, by the new RNMS syllabus. Methods of providing suitable training to equip staff for this changing role are discussed and it is concluded that an economic and effective method may be through locally organized in-service training. One particular in-service course--the education of the developmentally young course for mental handicap practitioners--is described and its applications in two health authorities in the UK are discussed. PMID- 3850100 TI - Authority and responsibility delegation predicts quality of care. AB - This study, conducted in acute care hospitals, supports and expands previous findings that delegation of responsibility and authority in the nursing service hierarchy is related to known factors affecting quality of patient care. Quality health care is improved if staff nurses are given autonomy and are expected to function at the level for which they have been prepared. PMID- 3850101 TI - A study of nurse tutors' conceptualization of their ward teaching role. AB - It is generally agreed by the nursing profession that the art and science of nursing can only be learnt in the direct delivery of patient care and that, in order to do this, students need to identify with a practitioner role-model in the clinical area. This research arose from the belief that nurse educationalists are failing to provide these learning opportunities for their students. The focus of the study was to identify factors in the nurse teacher's work role which mitigate against their teaching in the clinical area. The methodology was chosen in order to demonstrate the nurse teacher's conceptualization of her work role. In the first stage of the project this involved the repertory grid technique. From the results, a semantic differential questionnaire was built up and used for an attitude survey of a second sample of nurse teachers. The research samples consisted mainly of nurse tutors but a small group of both clinical teachers and senior tutors was included for comparison studies. Results showed that the main factors leading to a lack of clinical teaching by educational staff include lack of control and a sense of conflict, stress and anxiety in the ward-teaching situation, lack of peer support and an inability to plan ahead for such work. The most pervasive feature which emerged, however, was the felt lack of available time for clinical work vis-a-vis their other duties. This is discussed in terms of role strain. Differences in response between teacher grades were studied and showed that all the problems found appear to be greater among the nurse tutor group. This may be a consequence of a further finding that clinical teachers are more likely to make finer and more frequent distinctions between the aims and problems of ward- and school-based teaching. PMID- 3850102 TI - District nurse training: a pilot survey of demand, provision and students. AB - A pilot survey of district nurse training provision for the period April 1982 March 1983 was carried out to provide a profile of training institutions; their resources (human and physical), courses and students. Information was collected by means of a postal questionnaire sent to the 50 UK training institutions. The survey highlighted differences between district nurse and district enrolled nurse training; variations in entry requirements, size and length of courses, and staffing. It also gave an overview of students' characteristics and provision of training for other professional groups. It proved the feasibility and value of collecting such information, and also provided the basis for a current study (Baseline Data Project), which will produce a package of survey material, and software for analysis to enable the subsequent collection of information. PMID- 3850103 TI - A descriptive study of the attitudes of baccalaureate student nurses toward the elderly. AB - Using a questionnaire entitled 'Opinions about People', the attitudes toward ageing and the elderly of 70 students beginning and 21 students completing a 4 year baccalaureate nursing programme were compared with the attitudes of 31 registered nurses entering a 3-year university nursing programme. Thirty students beginning the 4-year baccalaureate physiotherapy programme were included in the control group which also served as the pilot study. Findings revealed few significant differences between students entering a basic or post-registration baccalaureate programme. The cross-sectional comparison of students entering and completing a 4-year university nursing programme indicated a significant difference on one of the seven attitudinal scales (family responsibility for the elderly). Results, implications for nursing education, conclusions and recommendations are discussed. PMID- 3850104 TI - The Warnock report on human fertilization and embryology. PMID- 3850106 TI - Antitumor activity and toxicity of peroxo heteroligand vanadates(V) in relation to biochemistry of vanadium. AB - A selected set of 14 V(V) complexes was tested for toxicity and antitumor activity against L1210 murine leukemia, to examine the biological properties of peroxoheteroligand vanadates(V) of the formula (NH4)4[O(VO(O2)2)2], M3I[VO(O2)2C2O4], and MI[VO(O2)L], L = malate, citrate, iminodiacetate, nitrilotriacetate, and EDTA. The x-ray structure is known for five of these compounds. A relationship has been found between the chemical composition and the biological activity (antitumor activity-toxicity) of these complexes. Activity in the L1210 system is defined as greater than or equal to 25% increase in life span, and this was seen with (NH4)4[O(VO(O2)2)2]; M3[VO(O2)2(C2O4)]2H2O, M = K, NH4; and NH4[VO(O2)Malato]H2O. These observations are important for the biochemistry of vanadium. The special nature of electron transfer within the V(V) peroxo moiety is proposed to be responsible for this phenomenon. Peroxo heteroligand vanadates(V) therefore represent a model system for studying some biochemical interactions of vanadium in living matter. PMID- 3850105 TI - Profound pharmacologic inhibition of renal tubule sodium and water reabsorption in rats. AB - Vanadate, furosemide, chlorothiazide, acetazolamide, and amiloride were infused concomitantly into conscious rats to determine the extent to which renal sodium reabsorption can be inhibited. The animals were maintained in exact fluid balance despite exorbitant urine flow rates by intravenous infusion of an isotonic salt solution sufficient to keep body weight constant. In maximally effective doses vanadate, furosemide, chlorothiazide, acetazolamide, and amiloride increased sodium excretion to an amount equal to 69% of the filtered load. Together with isotonic extracellular fluid expansion equal to 7% of body weight, these pharmacologic agents increased sodium excretion to an amount equal to 83.7% of the filtered load, a level of sustained sodium excretion that has not been reported previously in mammals. These studies demonstrate that tubular sodium and water reabsorption can be profoundly inhibited in vivo by drugs that diminish sodium and water transport in proximal as well as in distal tubules. PMID- 3850107 TI - Auditing. A method for evaluating quality of care. AB - The nursing process is accepted as a major framework for practice; but its integration in the quality assurance process, in a format where the phases of the nursing process are examined in a sequential manner has not been reported. The authors have developed a nursing process audit tool that provides an organized approach for evaluating independent nursing functions based on the nursing process. Each step in the nursing process can be evaluated individually and as a whole. The tool can be used concurrently and/or retrospectively. This tool provides nursing administrators with pertinent data that can be used to improve nursing practice. PMID- 3850108 TI - Demystifying critical care management. Part 1. AB - Many nurse executives avoid an active management role in their hospital's critical care areas, a stance that can result in decreased personal, professional, and institutional efficiency and effectiveness. This article is a guide for applying the management process in critical care units and for helping nurse executives gain control of one of the largest consumers of hospital and nursing resources. This is part 1 of a two-part article. PMID- 3850109 TI - Standing ovation. A holistic approach to successful speaking. AB - As caregivers, nurses need to speak out and share nursing intelligence and ideals with health professionals, the public, and legislators. "Standing ovation" offers insightful, intelligent, holistic concepts that enable the nurse speaker to communicate understandable information with enthusiasm, dignity, and powerful persuasion. PMID- 3850110 TI - Developing a rating interview guide. AB - Nursing administrators have spent considerable time and effort developing various interview tools that will meet the needs of the institution, however, of equal importance is the method of evaluating responses obtained during the interview process. This article discusses a master tool designed as a base from which a variety of interview tools can be developed. Weighted scoring reflects the strengths of the applicant consistent with the position requirements and in an equitable manner. PMID- 3850111 TI - Hiring a nurse researcher. PMID- 3850113 TI - Drug usage & illness in elderly patients (Part I). Your CE topic this month (No. 9). PMID- 3850112 TI - Variable hospital accounting practices. Are they fair for the nursing department? AB - Hospital accounting practices, in relation to nursing departments, are reviewed. Nursing departments lack a distinct identity as an organizational subentity for accounting purposes. Nursing, the main product of hospitals, is an "expense only" item. The authority and responsibility to incur and limit expense is uniquely withheld from the nursing department. Social factors that might explain these accounting practices are examined. PMID- 3850114 TI - A clinical ladder for the LPN. PMID- 3850115 TI - New look at old. PMID- 3850116 TI - The aging heart. PMID- 3850117 TI - Hospice: a new horizon for nurses. PMID- 3850118 TI - Can a laugh a day keep the doctor away? PMID- 3850120 TI - The NAPNES "Position Paper". PMID- 3850119 TI - Encouraging hope in the ventilator patient. PMID- 3850121 TI - Drug usage & illness in elderly patients (Part II). Your CE topic this month (No. 10). PMID- 3850122 TI - NSGAE. Nursing Adaptation Evaluation. A proposed axis VI of DSM-III. PMID- 3850123 TI - The suicidal phone call. PMID- 3850124 TI - Breaking the race barrier. AB - Through the reflective process of analyzing one's own feelings and reactions to the ethnic minority patient, the white therapist develops an inner clarity that serves as a resource to cope with the unique conflicts one must confront in interracial practice. Only when the therapist has come to some resolution of his or her own feelings about the plight of ethnic minorities in this country can this acumen develop. Although the therapeutic skills applied in psychotherapy with ethnic minorities are in no way different from overall therapeutic skills, certain techniques may be especially useful in interracial practice. For instance, a discussion of the meaning of race and ethnicity in the relationship may curtail racial distortion, prevent stereotyping, and lead to the creation of a therapeutic alliance. When dealing with transference and countertransference issues, the therapist must be particularly attentive to the representation of these same distortions and stereotypes. Formulating clinical problems from dual perspectives, theoretical and sociocultural, is an arduous, but necessary task. Finally, the white therapist must be able to view ethnic minority patients as individuals. Although these patients cope with special problems which must be acknowledged and dealt with in therapy, the therapist must realize there is a common ground on which to communicate. On this common ground, therapists discover the foundation of interracial clinical practice is the ability to accept and respect their patients and themselves as individuals who may have similar anxieties, problems, experiences, and goals. It is through the recognition and sharing of the fundamental human bond that ethnic and racial differences, which may have detrimental effects on interpersonal relationships, are transcended. PMID- 3850125 TI - Boundary marking. PMID- 3850126 TI - The power of the dissociative state. PMID- 3850127 TI - Fire on the unit. PMID- 3850128 TI - A resistance determinant to nucleic acid-binding compounds in methicillin resistant Staphylococcus aureus. AB - Recent isolates of methicillin-resistant Staphylococcus aureus from Australia and several other countries carry a plasmid coding for high levels of resistance to propamidine isethionate and low levels of resistance to cetyltrimethyl-ammonium bromide. The reasons for the acquisition and retention of such a determinant are not known. To define the properties of this resistance determinant in more detail, the minimum inhibitory concentrations of a series of cationic agents, including ethidium bromide, were determined and a cationic-resistance profile prepared for several strains of S. aureus and their isogenic, sensitive derivatives. The compounds for which resistance is coded by this determinant all bind to nucleic acids. Hence the determinant has been designated the NAB (nucleic acid-binding compounds)-resistance determinant. PMID- 3850129 TI - Science and standards. PMID- 3850130 TI - Absorption of microwave energy by muscle models and by birds of differing mass and geometry. AB - Spheres composed of phantom muscle of radius 1.5, 2, 3, 4, 6 and 8 cm, as well as birds (parakeets, quail, pigeons, chickens, turkeys) were exposed to far-field plane waves at power densities of incident radiation between 182 and 560 mW/cm2 and at frequencies of 775, 915 and 2450 MHz. Specific absorption rate (SAR) patterns were determined by thermographic techniques for both spheres and birds. The measured SAR patterns in spheres were comparable to those from theoretical predictions. The SAR patterns in birds, however, varied markedly from those obtained from spheres of comparable mass. The results indicate that the geometrically complex animal is not represented by simple geometric models for making absorption studies. Thermograms of birds exposed in the flying position indicated that the SAR is high in the wings. The behavioral response of the birds to the exposure was variable. Threshold power densities for biological or behavioral reactions were determined for each bird at all three frequencies. The lowest power density associated with reactivity by the chicken was 5.8 mW/cm2 (corresponding to SARs of 3.1 W/kg in the head and 3.9 W/kg in the neck) at 775 MHz. PMID- 3850131 TI - Radiofrequency electromagnetic leakage fields from plastic welding machines. Measurements and reducing measures. AB - Operators of unshielded plastic welding machines are often exposed to radiofrequency (RF) electromagnetic leakage fields that substantially exceed all present occupational standards. Measurements show that the Swedish ceiling values (SE = SH = 250 W/m2) in many cases are exceeded at distances up to 1 meter from the electrode. To reduce the stray fields to an acceptable level at the location of the operator, RF field suppression devices should be fitted to the machine. We have studied the strength and the extent of the RF leakage field under various operating conditions and also investigated different methods for reducing the leakage field. The following measurements have been performed: E- and H-field strengths as a function of distance from the electrode, and as a function of load/tuning; the time dependence of [E]2 for various combinations of tuning and welding times producing a welding seam with the same strength; isopower density curves for SE and SH = 250 W/m2 with different types of RF emission control devices fitted to the machine; the RF voltage between the electrode and the welding table and the RF voltage on the machine casing. By decreasing the RF power and increasing the welding time the field strengths at the location of the operator can be reduced to levels below the ceiling values. The RF voltage between the electrode and the welding table ranged from 800 V up to 2100 V for the different plastic material that was welded. The RF voltage on certain parts on the chassis could be as high as 200 V. In order to reduce these voltages and the stray fields the machine should be equipped with a "large capacitive shield" in cases where this is possible. PMID- 3850132 TI - Effect of aspoxicillin on anaerobic bacteria. AB - Aspoxicillin (ASPC), a semisynthetic penicillin has a broad spectrum of antibacterial activities against Gram-positive and Gram-negative anaerobic bacteria. Its in vitro antibacterial activity was less than those of cefoxitin against Peptostreptococcus and Veillonella, but was significantly high against Bacteroides fragilis, one of the most clinically important anaerobe. The therapeutic and/or protective effect of ASPC in experimental subcutaneous abscess or experimental intraabdominal mixed infection due to beta-lactamase producing B. fragilis and non-producing Escherichia coli were much stronger than those of ticarcillin. In order to account the superiority of ASPC in vivo, the effects of ASPC and other beta-lactams on B. fragilis were compared and the results were analyzed in relation to their in vitro bactericidal activities, stability against the beta-lactamase, binding properties with penicillin-binding proteins and pharmacokinetic properties. Interestingly, administration of ASPC did not increase the bacterial counts of Clostridium difficile in caecal contents, but piperacillin, ticalcillin, carbenicillin, ampicillin and cefotaxime increased the counts. PMID- 3850133 TI - [Primary nursing. 8. Nursing project team at St. Luke's International Hospital. Incorporation of primary nursing into the nursing schedules]. PMID- 3850134 TI - [Re-evaluation of daily care. 44. Care of the critical patients. Classifications of "critical illness" based on hospital management and for the nursing purposes]. PMID- 3850135 TI - [Rehabilitation in heart diseases--the role of nursing. Definition of rehabilitation in heart diseases]. PMID- 3850136 TI - [Rehabilitation in heart diseases--the role of nursing. Rehabilitation nursing of patients with acute myocardial infarction: delays in the start of rehabilitation therapy in clinical cases]. PMID- 3850137 TI - [Early rehabilitation nursing of patients following heart surgery]. PMID- 3850138 TI - [Rehabilitation nursing of patients with ischemic heart disease on an ambulatory basis]. PMID- 3850139 TI - [Problems concerning rehabilitation and nursing of patients with angina pectoris]. PMID- 3850140 TI - [Nursing approach to patients with myocardial infarction who do not fully understand the illness]. PMID- 3850141 TI - [Attitudes in nursing and observation. 2. Through nursing and documentary writing. Discussion]. PMID- 3850142 TI - [Bedside nursing. Recognition of one-sided nursing actions. Re-evaluation of nursing scenes using transactional analysis]. PMID- 3850143 TI - [Learning through clinical training in adult nursing]. PMID- 3850144 TI - [A monologue by a nursing director. Reflection 6 months after a transfer to a new position]. PMID- 3850145 TI - [Reports from a hospice. 8. Care of dying people. Hospice care and religious care of the soul]. PMID- 3850146 TI - [Clinical description of senile dementia. Symptoms of senile dementia. 3]. PMID- 3850148 TI - [Counseling of patients. 7. Observation of the environment and background of the patient: an approach in counseling. 4]. PMID- 3850147 TI - [Medicine in changing society: toward the 21st century. Development of health manpower]. PMID- 3850149 TI - [Profile of a nurse: Ms. Sumiko Nihei who has been active at a town clinic for the past 6 years]. PMID- 3850150 TI - [Diary of a cancer patient: a positive attitude in spite of a loss of vocalization. 8. Recovery]. PMID- 3850151 TI - [Nursing situations in Indonesia. 1]. PMID- 3850152 TI - [Plastic surgery in Japan]. PMID- 3850154 TI - [Reconstruction of deformed hands and feet]. PMID- 3850153 TI - [Reconstruction of facial anomalies and injuries]. PMID- 3850155 TI - [Microsurgical reimplantation of amputated body parts and free flap grafting]. PMID- 3850156 TI - [Mammoplasty following surgery of breast cancer]. PMID- 3850157 TI - [Problems following plastic surgery--functional and psychological aspects]. PMID- 3850158 TI - [Nursing of patients undergoing plastic surgery--pre and postoperative nursing]. PMID- 3850159 TI - [Protection of the surgical wound following plastic surgery and nursing care to maintain cleanliness of the regions--protection and preservation of the surgical wound following plastic surgery of cleft lip and palate and microtia]. PMID- 3850160 TI - [Social rehabilitation of patients following reimplantation of amputated fingers and toes (or extremities)--a survey on the functional and psychological impact]. PMID- 3850161 TI - [Nursing interaction with microtic children and their families--instructions to be given to families]. PMID- 3850162 TI - [Nursing following surgery of breast cancer and subsequent mammoplasty]. PMID- 3850163 TI - [Nursing of a patient following finger implantation]. PMID- 3850164 TI - [Response to a child with cleft palate--assistance in satisfying the patient's desire to eat]. PMID- 3850165 TI - [Diet therapy of diabetic patients: significance and innovation in motivating the patients]. PMID- 3850166 TI - [Pre and postoperative management and nursing of patients with esophageal cancer- with special reference to postoperative complications]. PMID- 3850168 TI - [Respiratory management of newborn infants and nursing keypoints]. PMID- 3850169 TI - [Fasting therapy for psychosomatic disorders]. PMID- 3850170 TI - [Senile dementia and simple rating methods]. PMID- 3850167 TI - [Respiratory care of newborn infants]. PMID- 3850171 TI - [Management of patients about to develop myocardial infarction]. PMID- 3850172 TI - [Temporary urostomy in urinary tract reconstruction]. PMID- 3850173 TI - [The Second European Symposium on Education of Diabetic Patients. (7). Active listening--confirmation of the validity of the patient information]. PMID- 3850174 TI - [Report on a Hawaiian nursing seminar. 4. The second-step educational system--at Hawaii Loa College]. PMID- 3850175 TI - [Nursing in social welfare activity. Health care and welfare]. PMID- 3850176 TI - [The process of encouraging wearing acoustic protectors in workers in a work place with deafening noise]. PMID- 3850177 TI - [Study on social status of nurses in modern history of nursing]. PMID- 3850178 TI - [Construction of a new nursing training center by JNA]. PMID- 3850179 TI - [Nursing in social welfare activity. Role of nursing in home for the aged]. PMID- 3850180 TI - [Nursing and humor]. PMID- 3850181 TI - [Nursing in social welfare activity. Role and function of nurse in welfare facilities: in home for the aged]. PMID- 3850182 TI - [Nursing in social welfare activity. Role and function of the nurse in welfare facilities: responsibility of the nurse]. PMID- 3850184 TI - [Nursing in social welfare activity. Nursing in social welfare]. PMID- 3850183 TI - [Nursing in social welfare activity. Viewpoints of welfare service providers: home maker]. PMID- 3850185 TI - [Nursing in social welfare activity. Viewpoints of welfare service providers: nursery nurse]. PMID- 3850186 TI - [Nursing in social welfare activity. Viewpoints of welfare service providers: instructor at a welfare factory]. PMID- 3850187 TI - [Nursing in social welfare activity. Viewpoints of welfare service providers: advisor at home for the aged]. PMID- 3850188 TI - [Nursing in social welfare activity. Viewpoints of welfare service providers: volunteers]. PMID- 3850189 TI - [Nursing in social welfare activity. Visiting nursing service provided by Musashino City]. PMID- 3850190 TI - [Teaching poetry at a nursing school--for better imagination. 13]. PMID- 3850191 TI - [Miyoko Takane, a nurse assisting a volunteers' group to care for the lonely aged in the community]. PMID- 3850192 TI - [Colon cancer and breast cancer; Parkinson's disease]. PMID- 3850194 TI - [Nursing diagnosis]. PMID- 3850193 TI - [Life at Minnesota University School of Nursing. 17]. PMID- 3850195 TI - [Professionalization no--autonomy yes]. PMID- 3850196 TI - [Autonomy of professions. We want to take over the responsibility for our actions]. PMID- 3850197 TI - [Continuing education of nursing instructors]. PMID- 3850198 TI - [Payments--costs--freedom to move around. What does compulsory insurance bring the insured?]. PMID- 3850199 TI - [7th continuing education meeting for the specialty group of nurse anesthetists. Safety in anesthesia]. PMID- 3850200 TI - [Study group prepares an educational program. Why education in disaster nursing?]. PMID- 3850201 TI - [Considerations of a study group "Nursing Personal and Work for Peace". How do we convey our responsibility?]. PMID- 3850203 TI - [Safety for the handling of cytostatic substances. Protective measures are useful]. PMID- 3850202 TI - [Recommendation concerning protective measures. Safety for the handling of cytostatic substances. The current situation--a "Swiss compromise"]. PMID- 3850204 TI - [On the road to autonomy]. PMID- 3850205 TI - [Working among the mentally handicapped. A world to discover and to love]. PMID- 3850206 TI - [The quality of perception of symptoms of psychiatric emergencies]. PMID- 3850207 TI - [Interview with Ruth Kuhn, new chief president of the ASI (Swiss Nurses' Association). Education at the focus of preoccupations]. PMID- 3850208 TI - [Anesthesia: atelectasis and bronchoaspiration. Risk factors, symptoms and treatment]. PMID- 3850209 TI - [Payments--costs--freedom to move around. What does compulsory insurance bring the insured?]. PMID- 3850210 TI - [Sexuality and nursing. More than a basic need. Man is sexual]. PMID- 3850211 TI - [Sexuality and nursing. Status of the sick person in the hospital. Both Eros and tenderness have healing aspects]. PMID- 3850212 TI - [Sexuality and nursing. Problems of the nurse. The relationship with one's own sexuality characterizes the relationship with that of the patients]. PMID- 3850213 TI - [Sexuality and nursing. Breaking through taboos is not simple. Recognition- courage--knowledge]. PMID- 3850214 TI - [Short legal lesson for nurses. 2. Legal problems of extramural nursing]. PMID- 3850215 TI - [A comparative study. The older person too is an individual]. PMID- 3850216 TI - [Interview with Dr. Sylvia Kappeli. We urgently need more nurses at this stage]. PMID- 3850217 TI - [National student organization established. Participating in the political process]. PMID- 3850218 TI - [Life fulfillment--does it exist? In the middle of life]. PMID- 3850219 TI - [What is meant with immunosuppression?]. PMID- 3850220 TI - [Causes, clinical aspects and therapy of lung fibrosis]. PMID- 3850221 TI - [Given away chances]. PMID- 3850222 TI - [Clinical patient monitoring without mechanical or electronic instruments]. PMID- 3850223 TI - [Experience of a patient following a heart infarct in the hospital. II. About relationships with physicians and nurses]. PMID- 3850224 TI - [Case-related Balint work in an oncology unit]. PMID- 3850226 TI - Reshaping the future of health education. PMID- 3850225 TI - [Psychotherapeutic considerations in the relationship with the elderly in nursing]. PMID- 3850227 TI - An empirical test of a cognitive social learning model for stress moderation with junior high school students. AB - A cognitive social learning model for stress moderation with junior high school students is described. Portions of the model were tested using 531 seventh and eighth grade students. Higher stress levels were found for younger students, white students, females, and those with more upsetting life events. The stress levels did not appear to be moderated by health locus of control. Type A personality, or knowledge about stress. Further research is needed to test additional components of the model. PMID- 3850228 TI - Parents' decision-making process in medication administration for control of hyperactivity. AB - The purpose of this research was to investigate the efficacy of a specific intervention strategy designed to diminish the ambivalence that parents experience when deciding to place their hyperactive child on stimulant medication. Data analyses demonstrated that a counseling intervention was more effective than a control conference in making parents more aware of the importance of deliberating about their decision. The results further indicated that parents evidenced a positive attitude regarding the intervention and, subsequently, toward their decision concerning medication administration, if the intervention was conducted by a school nurse. Discussion includes an interpretation of these findings that suggests the importance of health care professionals in the school setting. PMID- 3850229 TI - Staying alive: a mini-unit on child molestation prevention for elementary school children. AB - This article describes a mini-unit to help teachers prevent molestation of elementary school children. The major emphasis of the unit is on safety and survival skills that young people can use to help them in "Staying Alive." Child molestation is defined, methods of coercion are described, and survival tips and relevant learning activities related to prevention are suggested. The mini-unit is an example of what elementary school teachers, in cooperation with the school nurse, can do to incorporate survival skills to prevent child molestation into the elementary school classroom. PMID- 3850230 TI - Use of statistics in the Journal of School Health 1979-1983: a content analysis. AB - A content analysis of the statistical methods employed in the research/evaluation articles published in Volumes 49-53 of the Journal of School Health (JOSH) was performed. Questions addressed included: To what extent does JOSH publish articles having a research/evaluation theme? Does knowledge of a few basic statistical techniques provide access to the statistical components of a high percentage of the research/evaluation reports published in JOSH? Which additional, but more complex techniques are used most often by authors? Results indicated that, to have access to the statistical content of about three-fourths of the research/evaluation reports published in JOSH, a reader would have to have learned descriptive statistics, analysis of contingency tables, analysis of variance, t-tests, and multiple comparison tests. Knowledge of these and other statistical procedures might assist school health practitioners read research/evaluation reports, and adapt the findings to their respective work settings. Moreover, content analyses can be tools for assessing the state-of-the art of a profession, as well as helping to plan for practitioners' continuing education needs. PMID- 3850231 TI - Effect of a brief instructional unit in death education on the death attitudes of prospective elementary school teachers. AB - The present study determined if there would be a significant change in the attitudes of prospective elementary school teachers toward death after two, one- and-one-half hour instructional units of death education that were incorporated into an elementary health education methods and content class (experimental group). Control groups consisted of similar students who did not receive death education, but were enrolled in the elementary health education methods and content class (control group I) and another group of students who were not in elementary education, but were enrolled in a basic home economics class (control group II). The Templer Death Anxiety Scale and a scale developed by the author to measure attitudes toward death education for young children were administered to the three groups during pretest and posttest sessions two and 10 weeks after instruction. Validity and reliability for the author's scale was determined by various experimental procedures. Several different resources were used in the education process. The experimental group had significantly less fear of death and felt more comfortable discussing death with children than did the two control groups. The results suggest that brief units of death education are effective in changing the attitudes of future elementary teachers. PMID- 3850232 TI - Determining school programming needs of special population groups: a study of asthmatic children. AB - A study of the 4,382 children in the New Milford (Connecticut) Public School System was conducted to determine if upper respiratory conditions and other health problems may be related to school performance. Seven percent of the 4,036 respondents were found to be asthmatic. Correlations of school-related factors for 61 of 286 students who had high absenteeism did not appear to be dependent upon asthma for any identified health problem. As absenteeism increased, student grades decreased. Achievement testing in math and reading was related positively to IQ and appeared to be unaffected by absenteeism from school. On the basis of this study, special education programming was not recommended for the target population; however, parents and school personnel are much more aware of physical, emotional, and mental health problems and their possible implications for school performance. PMID- 3850233 TI - Impacted cerumen as a reason for failure in hearing conservation programs. AB - To test the hypothesis that children with impacted cerumen experience more hearing or middle ear problems than children with normal cerumen, two serial audiometric screenings including otoscopic examinations, tympanometry, and audiometry were conducted. Thirty children with impacted cerumen and 30 children with normal cerumen were rescreened three months after the initial screening. Results suggest an association between impacted wax and subsequent problems. PMID- 3850234 TI - [Discussion on problems followed by the introduction of a nurses' aide]. PMID- 3850236 TI - [Quantitative study of the nursing service at Mitsui Memorial Hospital]. PMID- 3850235 TI - [Reconsideration of the role of the nurses' aide in a nursing service]. PMID- 3850237 TI - [Consideration of the role of the nurses' aide]. PMID- 3850238 TI - [Management and education of nurses' aides]. PMID- 3850239 TI - [Improving problems in patient education by means of TA]. PMID- 3850240 TI - [Scientific and feministic approach to health]. PMID- 3850241 TI - [Practical application of the systems approach method to cases in nursing administration]. PMID- 3850242 TI - [Nurses' commitment in ward planning and staff education for opening the Saitama Children's Medical Center]. PMID- 3850243 TI - [Teaching a student to understand the nursing attitude]. PMID- 3850244 TI - [Programmed learning for the development of the art of nursing]. PMID- 3850245 TI - [Patient education and nursing research]. PMID- 3850247 TI - [What is "Death Education"?]. PMID- 3850246 TI - [Report on a student's life at the school of nursing, Loma Linda University]. PMID- 3850248 TI - [Death education in the preparation of health professionals]. PMID- 3850249 TI - [Sociocultural aspects of death and dying in Japan]. PMID- 3850250 TI - [A questionnaire on attitudes toward death and dying]. PMID- 3850251 TI - [Sweating responses to hot and humid environments; measurement by a simplified technic]. PMID- 3850252 TI - [Special technics in assertiveness training for women in the health professions]. PMID- 3850253 TI - [The role of nursing in the total hospital information system of Kagoshima University]. PMID- 3850254 TI - [Teaching a student to understand the nursing attitude]. PMID- 3850255 TI - [Programmed learning for the development of the art of nursing]. PMID- 3850256 TI - [Considerations of students' views on nursing]. PMID- 3850257 TI - [Report on a student's life at the school of nursing, Loma Linda University]. PMID- 3850258 TI - [Nursing process: nursing of patients with myocardial infarction. Physiopathology of myocardial infarction and life activities and prognosis of patients]. PMID- 3850260 TI - [Case study: lessons in interactions with terminal patients. Nursing of a patient with malignant lymphoma--a learning experience through nursing of a terminal patient]. PMID- 3850259 TI - [Nursing process: nursing of patients with myocardial infarction. Nursing tailored to individual patients. Discussion]. PMID- 3850261 TI - [Case study: lessons in interactions with terminal patients. Psychological support of a patient in the terminal stage of cancer of the bile duct]. PMID- 3850262 TI - [Case study: lessons in interactions with terminal patients. The importance of humane understanding in terminal care]. PMID- 3850263 TI - [Case study: lessons in interactions with terminal patients. Interactions with an aged patient in a critical stage--reevaluation of nursing based on conversations with the family members]. PMID- 3850264 TI - [Conference: lessons in clinical training. An attempt to extend the ADL of a patient with a loss of desire for recovery]. PMID- 3850265 TI - [Improvement of the hospital environment. On noise in the hospital]. PMID- 3850266 TI - [Test yourself: nursing keypoints. Nursing of a patient with liver cirrhosis and hepatic coma]. PMID- 3850267 TI - [Case report. Nursing of a patient with fracture of the medial femoral neck]. PMID- 3850268 TI - [Effects of interpersonal relations among patients sharing the room. Special consideration needed due to the presence of other patients sharing the room]. PMID- 3850269 TI - [Effects of interpersonal relations among patients sharing the room. Response to the psychological impact of the transfer (or the death) of other patients sharing the room]. PMID- 3850270 TI - [Effects of interpersonal relations among patients sharing the room. Confusion caused by exchanges of erroneous information among patients]. PMID- 3850271 TI - [Effects of interpersonal relations among patients sharing the room. Mutual support among patients suffering a common illness]. PMID- 3850272 TI - [Report by nursing students on a nursing study in Denmark. 6. Scenery in Denmark]. PMID- 3850273 TI - [Nursing process: nursing of patients with acute leukemia. Physiopathology of leukemia patients and their life activities and prognosis]. PMID- 3850275 TI - [Nursing process: nursing of patients with acute leukemia. Keypoints in the comprehensive observation of patients with acute leukemia]. PMID- 3850274 TI - [Nursing process: nursing of patients with acute leukemia. Diagnostic and therapeutic processes for patients with acute leukemia]. PMID- 3850276 TI - [Nursing process: nursing of patients with acute leukemia. Nursing plans for patients with acute leukemia]. PMID- 3850277 TI - [Nursing process: nursing of patients with acute leukemia. Nursing of a patient with acute leukemia who was forced to be absent from school for an extended period]. PMID- 3850278 TI - [Nursing process: nursing of patients with acute leukemia. Possible oversight in nursing due to the patient's cheerful attitude. A discussion]. PMID- 3850279 TI - [Case study: nursing to aid patients' independence. Nursing actions toward independent excretory actions--actions for a 75-year-old woman who was totally immobilized]. PMID- 3850280 TI - [Case study: nursing to aid patients' independence. Actions directed to a patient with an acute epidural hematoma who had a negative attitude toward recovery]. PMID- 3850281 TI - [Learning experiences in clinical training in obstetrics. A conference]. PMID- 3850282 TI - [Assistance in promoting sound and correct growth and development of children. A study on bed rest of a child with Kawasaki disease and prevention of accidents during the examination]. PMID- 3850283 TI - [Nursing of an aged patient with senile symptoms--expansion of ADL following surgery of rectal cancer]. PMID- 3850284 TI - [Sexual problems of patients encountered in clinical practice. Understanding of sexual problems--with special reference to the sex of the aged]. PMID- 3850286 TI - [Sexual problems of patients encountered in clinical practice. Handling of sex related behaviors of patients--on nurses' responses]. PMID- 3850287 TI - [Sexual problems of patients encountered in clinical practice. Sexual problems which become evident upon patients' return to a normal life]. PMID- 3850285 TI - [Sexual problems of patients encountered in clinical practice. Difficulties in sex-related health education of patients with spinal cord injuries]. PMID- 3850288 TI - [Effective use of clinical conferences. The format for the team and the quality of the conference]. PMID- 3850289 TI - [Effective use of clinical conferences. Learning experiences by students attending the conference]. PMID- 3850290 TI - [Witnessing deaths of patients: "the hospital as a place to die". A report by a nurse]. PMID- 3850292 TI - [Nursing process: nursing of patients with Parkinson's disease. Diagnostic and therapeutic processes in Parkinson's disease]. PMID- 3850291 TI - [Nursing process: nursing of patients with Parkinson's disease. Physiopathology of the disease and patients' life activities and prognosis]. PMID- 3850293 TI - [Nursing process: nursing of patients with Parkinson's disease. Keypoints in overall observation of patients with Parkinson's disease]. PMID- 3850294 TI - [Nursing process: nursing of patients with Parkinson's disease. Nursing plans for patients with Parkinson's disease]. PMID- 3850295 TI - [Nursing process: nursing of patients with Parkinson's disease. Nursing before and after withdrawal for the purpose of medication control of patients with Parkinson's disease]. PMID- 3850296 TI - [Nursing process: nursing of patients with Parkinson's disease. Nursing actions to reduce the anxiety and helplessness of patients. A discussion]. PMID- 3850297 TI - [Surveys and the analyses of their outcomes. On a "survey on the attitude of hemodialysis patients"]. PMID- 3850298 TI - [Surveys and the analyses of their outcomes. A survey on the daily activities of tracheostomy patients--a comparison between inpatients and discharged patients]. PMID- 3850299 TI - [An approach in assisting a patient's recovery of independent actions. A lesson in interactions with a patient with a cervical spinal cord injury who was unwilling to accept rehabilitation therapy]. PMID- 3850300 TI - [Lesson in clinical training. Pleasure in nursing learned through clinical training. A conference]. PMID- 3850301 TI - [Test yourself. Nursing keypoints. Nursing of a 13-month-old child undergoing non surgical treatment of congenital hip dislocation]. PMID- 3850303 TI - [Effective use of clinical conferences. Definition of significant conferences]. PMID- 3850302 TI - [Nursing of a patient with restrictions of body motions due to postoperative biliary peritonitis--encouragement of the patient by assisting in expectoration and maintenance of cleanliness]. PMID- 3850304 TI - [Effective use of clinical conferences. The conference as a scene where all novel ideas can be introduced]. PMID- 3850305 TI - Electronic fetal monitoring and obstetrical malpractice. PMID- 3850306 TI - Technology assessment, public policy and transplantation: a restrained appraisal of the Massachusetts Task Force approach. PMID- 3850307 TI - The dog and his shadow: a response to Overcast and Evans. PMID- 3850308 TI - Health law teachers. Computer-assisted research into cross-disciplinary subjects. PMID- 3850309 TI - Variations on $962,258: the misuse of data on medical malpractice. PMID- 3850310 TI - Aids, a complex syndrome. PMID- 3850311 TI - Seclusion and restraint: the current state of debate in Massachusetts. PMID- 3850312 TI - [Conjunctivitis]. PMID- 3850313 TI - [Corneal disease in children]. PMID- 3850314 TI - [Uveitis]. PMID- 3850316 TI - [Congenital cataract]. PMID- 3850315 TI - [Diseases of the lacrimal organs in children]. PMID- 3850317 TI - [Health--the common property]. PMID- 3850318 TI - [Congenital glaucoma]. PMID- 3850319 TI - [Prevention of amblyopia]. PMID- 3850320 TI - [Treatment of amblyopia in children]. PMID- 3850321 TI - [Eye injuries in agricultural workers and their treatment]. PMID- 3850322 TI - [Role of the nurse in treating myopic patients]. PMID- 3850323 TI - [Work of the nurse in an office for the protection of the vision of children]. PMID- 3850324 TI - [Ophthalmic migraine]. PMID- 3850325 TI - [Prevention of visual fatigue while watching television]. PMID- 3850326 TI - [Prevention of agricultural traumatism]. PMID- 3850328 TI - [Snoring during sleep]. PMID- 3850327 TI - [Plants in the treatment of eye diseases]. PMID- 3850329 TI - [System of active training and instruction methods in the teaching of the topic of general patient care]. PMID- 3850330 TI - [Dispensary care--one of the means for improving the health of the population]. PMID- 3850331 TI - [Eye injuries in children]. PMID- 3850332 TI - The nature and scope of advanced nursing practice. PMID- 3850333 TI - Power, nursing, and professional associations. PMID- 3850334 TI - Environments for enhancing nursing research. PMID- 3850335 TI - Predictors of pregnancy outcome and perception of birth: a nursing study in progress. PMID- 3850336 TI - The fate of recovered chemically-dependent Michigan Board of Nursing disciplined RNs: a descriptive study. PMID- 3850337 TI - Providing maternity care in the community. Part 1. PMID- 3850338 TI - The American nurse-midwife. PMID- 3850339 TI - Computers in an obstetric department. PMID- 3850340 TI - Computers in neonatal and paediatric departments. PMID- 3850341 TI - Providing maternity care in the community. Part 2. PMID- 3850342 TI - The scope and practice of parent counselling. Part 1. PMID- 3850343 TI - When your patients ask: coping with Parkinsonism. PMID- 3850344 TI - Neonatal seizures: Part II. Recognition, treatment, and prognosis. PMID- 3850345 TI - Reaching out to community hospitals with perinatal education. PMID- 3850346 TI - Neonatal procedure workshops: hands-on learning in outlying hospitals. PMID- 3850347 TI - Time management: the foundation of a smoothly operating NICU. PMID- 3850348 TI - Neonatal hyperviscosity-polycythemia syndrome. PMID- 3850349 TI - Bilateral femoral shaft derotation osteotomies. PMID- 3850350 TI - Theatre control. PMID- 3850351 TI - How staff could be made more aware of waste. PMID- 3850352 TI - The image of the theatre nurse. PMID- 3850353 TI - Collaborate for success. PMID- 3850354 TI - Have you questioned authority today? PMID- 3850355 TI - The nurse's image in theater and film. PMID- 3850357 TI - Interview: Linda Amos, RN, EdD. PMID- 3850356 TI - Hiring smart. PMID- 3850358 TI - 10 tips for the effective manager. PMID- 3850359 TI - New central clearing house for training. PMID- 3850361 TI - Key role of the paediatric ward sister. PMID- 3850360 TI - Royal College of Nursing. Gain goodwill; moving on. PMID- 3850362 TI - Save essential homes. PMID- 3850363 TI - College airs its views on extending the role of the practising nurse. PMID- 3850364 TI - Royal College of Nursing. Inquiry call; strong words. PMID- 3850366 TI - We owe it to breast cancer patients to maintain realistic hope. PMID- 3850365 TI - Safeguarding data. PMID- 3850367 TI - Royal College of Nursing. A useful tool; need protection. PMID- 3850368 TI - Manpower planning: science or art. PMID- 3850369 TI - Student situation. PMID- 3850370 TI - Royal College of Nursing. Vital lessons. PMID- 3850371 TI - Dismissal of DNO raises a vitally important matter of principle. PMID- 3850372 TI - Strengthening of nursing input on ethical committees is essential. PMID- 3850373 TI - Royal College of Nursing. Geriatric leads. PMID- 3850374 TI - A recognition of student maturity. PMID- 3850375 TI - Feeling better has to be worked at. PMID- 3850376 TI - Optimistic vision of the future for mental handicap nursing. PMID- 3850377 TI - Royal College of Nursing. Get it right. PMID- 3850378 TI - Different opinions. PMID- 3850379 TI - New forum's support for nurse teachers planning change. PMID- 3850380 TI - Looking at nursing models. PMID- 3850381 TI - Career advancement in nursing. PMID- 3850382 TI - Making the NITA standards work for you. PMID- 3850383 TI - Pediatric dosage calculations. PMID- 3850384 TI - Justification of an i.v. team using productivity data. PMID- 3850385 TI - The i.v. therapy team: impact on patient care and costs of hospitalization. PMID- 3850386 TI - A study of i.v. therapy education. PMID- 3850387 TI - Continuous morphine drip for intractable pain control. PMID- 3850388 TI - Marketing: a tool for i.v. nurses. PMID- 3850389 TI - Care and cost-justification of final filtration. PMID- 3850390 TI - Nurses worldwide renew dedication to social action. PMID- 3850391 TI - Nurses and patients--together we can heal the sick health care system. PMID- 3850392 TI - Untangling communication lines to connect consumers and providers. PMID- 3850393 TI - Shaping an image of competence and caring. PMID- 3850394 TI - Charting nursing's course through Megatrends. PMID- 3850395 TI - Notes from a young aphasic patient in a nursing home. PMID- 3850396 TI - The university and the hospital: old friends, new allies. PMID- 3850397 TI - A guide for evaluation of test items. PMID- 3850398 TI - New directions in primary health-care nursing. PMID- 3850399 TI - Gaining access to a clinical setting for research. PMID- 3850400 TI - High-risk students. Part 3. Evaluating a student retention program. PMID- 3850401 TI - Reflections on teaching nursing. PMID- 3850402 TI - Group faculty practice: dreams versus reality. PMID- 3850404 TI - Quit wasting time with "nursing rituals". PMID- 3850403 TI - Action stat! Dislodged P.A. catheter. PMID- 3850405 TI - Infuse-A-Port: new path for i.v. chemotherapy. PMID- 3850407 TI - View from the horizontal side of caring. PMID- 3850406 TI - Caring for the quadriplegic patient with ankylosing spondylitis. Nursing grand rounds. PMID- 3850408 TI - Combatting heart attacks on the home front. PMID- 3850409 TI - Understanding drugs that affect the autonomic nervous system. PMID- 3850410 TI - Help your postop patient breathe easier with incentive spirometry. PMID- 3850412 TI - Toxic shock syndrome: an update on symptoms and treatment. PMID- 3850411 TI - Caring for the comatose patient. PMID- 3850413 TI - Getting along with doctors who are hard to get along with. PMID- 3850414 TI - I.C.U.--no place to "sink or swim". PMID- 3850415 TI - Driving while intoxicated. Gathering legal evidence: what must nurses do? Protect the victim, not the criminal. PMID- 3850416 TI - Driving while intoxicated. Gathering legal evidence: what must nurses do? Let laws and policies guide you. PMID- 3850417 TI - Julie was on my team--but she competed against me. PMID- 3850419 TI - Avoiding legal risks in the E.D. PMID- 3850418 TI - Legalizing heroin for intractable pain: humane relief or cruel hoax? PMID- 3850420 TI - Cut documentation time by 50%. PMID- 3850421 TI - Using emergency drugs correctly. Part I. PMID- 3850423 TI - What do dying patients need most? PMID- 3850422 TI - How to handle a rude doctor. PMID- 3850424 TI - What helps dying patients: some common fallacies. PMID- 3850425 TI - Hidden hazards on the job. Part II. Parenteral antineoplastic drugs. PMID- 3850426 TI - Can you assess this elderly patient's cardiac dysrhythmia? PMID- 3850427 TI - How to cope with verbal abuse. PMID- 3850428 TI - A case of misappropriation. PMID- 3850429 TI - [Competence norms and criteria, are they a reality for the beneficiary?. Interview by Claudette Domingue]. PMID- 3850430 TI - [Nursing care. A link between theory and practice is imperative]. PMID- 3850431 TI - [To provide care, one has to be in good health]. PMID- 3850432 TI - [Episiotomy and sexual mutilations]. PMID- 3850433 TI - [Professionalism. A question of commitment in research]. PMID- 3850434 TI - [The Tempo automated system. Can the nurse participate in this form of audiologic detection?]. PMID- 3850435 TI - [The Philippe Pinel Institute opens its doors to female beneficiaries]. PMID- 3850436 TI - [Suicide in youth]. PMID- 3850437 TI - [Home monitoring]. PMID- 3850438 TI - [Alternative practices in nursing]. PMID- 3850439 TI - [Continuing education]. PMID- 3850440 TI - [The Health Center for Women celebrates its 10th anniversary]. PMID- 3850441 TI - [Conjugal violence and feminism]. PMID- 3850442 TI - [Conjugal violence. The feminist approach]. PMID- 3850443 TI - [Conjugal violence. The emergency service. Initial contact]. PMID- 3850444 TI - [Conjugal violence. Premarital violence]. PMID- 3850445 TI - [Conjugal violence. The law and rights]. PMID- 3850446 TI - [Conjugal violence. Prevention]. PMID- 3850447 TI - [PRO-GAM. A service for violent men]. PMID- 3850448 TI - [Administering drugs properly, it's important]. PMID- 3850450 TI - COSHH: training and competence. PMID- 3850449 TI - Looking for Legionnaires. PMID- 3850451 TI - Getting value from workplace visits. PMID- 3850452 TI - Sulphur dioxide fume exposure. PMID- 3850453 TI - Mental health at work. 3. PMID- 3850454 TI - Image and reality. 3. OH services in the NHS. PMID- 3850455 TI - Carter: striking the right balance?. Interview by Michael Bangs. PMID- 3850456 TI - OH in the Third World: the background. PMID- 3850457 TI - Mental health at work--4. PMID- 3850458 TI - Characteristics of a nursing diagnosis. PMID- 3850459 TI - Nursing diagnosis in occupational health. PMID- 3850460 TI - Nursing diagnosis: theoretical foundations. PMID- 3850461 TI - Nursing diagnosis: selected dilemmas in practice. PMID- 3850462 TI - Nursing diagnosis within the context of the nursing process. PMID- 3850463 TI - Rape trauma syndrome: a nursing diagnosis. PMID- 3850464 TI - An analysis of the employment patterns, roles and functions of master's-prepared occupational health nurse. Part I. PMID- 3850465 TI - Leadership: an AAOHN perspective. PMID- 3850467 TI - Gaventa's theory of power and powerlessness: application to nursing. PMID- 3850466 TI - Leadership and power in occupational health nursing: fact or fiction? PMID- 3850468 TI - Occupational health nursing: power in the 80s. PMID- 3850469 TI - Nurses: leaders in wellness. PMID- 3850471 TI - Unite to end sex-based wage disparities. PMID- 3850470 TI - An analysis of the employment patterns, roles and functions of master's-prepared occupational health nurses. Part II. PMID- 3850472 TI - The emergence of "superbaby": a good thing? PMID- 3850473 TI - Maternal anxiety, problem-solving ability, and adaptation to the premature infant. PMID- 3850474 TI - Selecting the appropriate family assessment tool. PMID- 3850475 TI - Only children: what do we know about them? PMID- 3850476 TI - An interview guide for helping children make health-care decisions. PMID- 3850477 TI - Common concerns of parents with disabled children. PMID- 3850478 TI - Children and pets: a therapeutic connection. PMID- 3850479 TI - Practice management. Strategies to increase visibility and acceptance among clients. PMID- 3850480 TI - Practical approaches to clinical research. Weaving research frameworks. PMID- 3850481 TI - Postcoital contraception. PMID- 3850482 TI - Pediatric management problems. Hodgkin's disease. PMID- 3850483 TI - Comparative studies on salivary kallikrein from cystic fibrosis patients and controls. AB - Kallikrein (EC 3.4.21.8) has been purified from the saliva of cystic fibrosis (CF) patients and from healthy individuals. The yields of enzyme are the same for both kinds of saliva. The CF and normal kallikrein have similar physical-chemical properties, such as amino acid composition, electrophoretic mobilities in polyacrylamide gels when different conditions are used, intrinsic fluorescence, and circular dichroism. The enzymes have no alpha-helix structure but large amounts of pleated sheet structure. CF and normal salivary kallikrein have also similar enzymatic properties, for example both enzymes show maximum activity at pH 8.2. An identical value of Km = 0.4 mM has been found for both enzymes with N benzoyl arginine ethyl ester as substrate, despite the fact that the kallikreins are inhibited by high substrate concentrations. The results of this investigation show that the salivary kallikrein in CF is normal and that it has normal activity. This leads us to suggest that the salivary kallikrein is not the cause of the observed abnormalities in CF saliva. PMID- 3850484 TI - Policies and procedures of accreditation for programs in nursing education. PMID- 3850485 TI - Major life events, daily stressors, and perimenstrual symptoms. AB - Major life events and daily stressors have been associated with women's experience of perimenstrual symptoms (PS). The purpose of this study was to determine the relationship of major life events and daily stressors to PS. Seventy-four women between 18 and 35 years of age kept daily recordings of stressors and symptoms for 2 months after which they completed the Schedule of Recent Events and the Moos Menstrual Distress Questionnaire (MDQ). Major life events were associated with PS reports on the MDQ but not with symptoms reported in the daily health diary. Daily stressors were more influential in perimenstrual symptoms than the cumulation of major life events. Moreover, a generally stressful life context was more influential in the experience of perimenstrual symptoms than episodes of stressful experiences during a particular menstrual cycle phase. PMID- 3850486 TI - Indicators of medical regimen adherence for myocardial infarction patients. AB - This study investigated relationships between demographic and medical variables, attitudes, perceived beliefs of others, and intentions toward medical regimen adherence and actual posthospitalization regimen adherence. During hospitalization, attitudes, perceived beliefs of others, and intentions toward prescribed medical regimen were elicited from 112 persons recovering from a first time myocardial infarction (MI). Six to 9 months posthospitalization, attitudes, perceived beliefs of others, and adherence behaviors were assessed. Multiple regression analysis indicated that, during hospitalization, attitudes and perceived beliefs of others were strong indicators of intentions to adhere to the medical regimen, but they were not indicators of actual adherence posthospitalization. Posthospitalization, attitudes and perceived beliefs of others were strong indicators of actual regimen adherence. Findings indicate rehabilitation plans for the MI patient should be individualized for hospital and home and should include data on health belief variables. PMID- 3850487 TI - The employment potential of hemodialysis patients. AB - This study examined variables that may influence the employment potential of hemodialysis patients. The study group consisted of currently employed (n = 20) and currently unemployed (n = 20) hemodialysis patients. All subjects had been employed before starting dialysis and were currently judged physically able to work by their physicians. No significant differences were found in job satisfaction or job importance before starting dialysis. The groups did not differ on biophysiological status or perception of health. However, a greater number of the unemployed had held jobs requiring heavier physical labor and reported that uremic symptoms prevented them from working. They also encountered more job discrimination due to illness and had a greater loss of career and life goals. No significant differences were found between the two groups in life satisfaction or dependence. In both groups the more independent subjects reported greater satisfaction with life. PMID- 3850488 TI - Urinary incontinence verification in elderly men. AB - This study considered the problem of verifying the amount and frequency of incontinent urine loss in an outpatient population. The sample consisted of elderly male community-dwelling veterans who experienced urinary incontinence. Two amount tests (60-minute and 3-day) were completed by 46 volunteer subjects and 7-day frequency records were kept by an additional 44 volunteers. Results indicated that 60-minute and 3-day absorbent pad tests for amount of urine loss classified 59% (n = 27) of the subjects the same way (normal or abnormal). Thus, the shorter test appears useful as a screening test and offers advantages of lower cost and more accurate reporting. If abnormal urine loss is not identified with the short test, the long test should be used to detect infrequent episodes. Three-day tests for incontinence frequency classified 86% (n = 28) of subjects the same as 4-day tests. Therefore, a 3-day test appears adequate to determine the number and pattern of incontinent episodes as well as associations with relevant events such as activity levels and fluid intake. PMID- 3850489 TI - Goal setting and health risk reduction. AB - The effectiveness of client participation in goal selection aimed at health risk reduction was compared with the effectiveness of provider-selected goals and of no goal setting. No difference in goal attainment was found between the two groups with goals. However, analyses of covariance for selected subsamples of individuals at risk revealed a significant difference between goal-setting groups for weight reduction, with the collaborative goal-setting group being more effective. Covariance analyses for other subsamples at risk showed significant differences between the goal-setting groups for current health age and potential for life expectancy increase; the provider goal-setting group proved to be more effective. Paired t tests within groups revealed that the provider goal-setting group made significant change in alcohol intake, seat belt use, and exercise as well as in global measures of current health age, estimated life expectancy, and potential for life expectancy increase. For the collaborative goal-setting group, significant change was found in weight reduction, exercise levels, and the global measures of estimated life expectancy and potential for life expectancy increase. The control group made a significant change in exercise, but not in any of the global measures of risk reduction. PMID- 3850490 TI - Validity and reliability of the Collaborative Practice Scales. AB - The aim of this study was to determine the validity and reliability of the Collaborative Practice Scales, two distinct self-report measures that assess the degree to which the interactions of nurses (Scale 1) and physicians (Scale 2) enable synergistic influence of patient care. Ninety-five nurses and 94 physicians completed test-retest versions of the scales as well as measures of attitudes toward shared responsibility and their mode of handling differences of opinion. Interdisciplinary peer evaluators rated subjects on collaborative practice. Two theoretically relevant factors were delineated for each of the scales, with the 9-item nurse scale measuring direct assertion of professional expertise/opinion and active clarification of mutual responsibilities and the 10 item physician scale measuring acknowledgement of the nurse's contribution to patient care and consensus development with nurses. Eigenvalues ranged from 1.27 to 4.17. Alpha coefficients were .80 and .84. Correlations with receptivity to shared responsibility and collaborative management of differences indicated support for factors underlying each scale. Sex of physician and the physician's behavior as rated by peer evaluators predicted scores on the physician scale; educational preparation and type of professional responsibility predicted nurses' collaborative practice. Six-week test-retest reliability was significant for both scales. Although results of the study were encouraging, a need for the addition of other theory-linked factors, combined with further testing of the scales, was identified. PMID- 3850491 TI - Medical students' views of the role of the nurse. AB - Problems of interprofessional relationships in the health care field were examined by asking medical students what experiences were important to the development of their views of nurses and nursing. First, field observations were made in nine hospitals affiliated with a large medical school. They were followed by individual tape-recorded, semi-structured interviews with 60 medical students randomly selected and stratified on the basis of year in the program and sex of the student. Ten males and five females from each of the 4 years comprised the sample. Analytic induction was used for data analysis and incorporated cross classification within topical categories to quantitatively determine trends. Findings revealed that while students' views of the health care team tended to be general and broadly inclusive among first- and second-year students, fourth-year students more often described specific personnel who could contribute directly to a particular patients' treatment as defined by the patient's medical diagnosis. Over the 4 years of medical school, students' perception of the physician's role vis-a-vis the patient and the health care team became more specific, while their perception of the nurse's role became more vague and diffuse. Factors contributing to confusion between the roles of the medical student and the nurse are identified and discussed. PMID- 3850492 TI - Accuracy of self-reported measures of compliance. PMID- 3850493 TI - Back on the rails. PMID- 3850495 TI - Welfare. Charity begins at home? PMID- 3850494 TI - Political funds. Fighting for the fund. PMID- 3850496 TI - Commons sense. If only ... PMID- 3850497 TI - Women behind bars. PMID- 3850498 TI - Prisons. A chance of security. Interview by Pamela Holmes. PMID- 3850499 TI - Prisons. A saga of neglect. PMID- 3850500 TI - Prisons. Family welfare. PMID- 3850502 TI - Jargon. The prynig syndrome. PMID- 3850501 TI - Management. Overlap--fact or fancy? PMID- 3850503 TI - Nursing process. Special assignment. PMID- 3850504 TI - Alcohol and pregnancy. PMID- 3850506 TI - Are handouts really necessary? PMID- 3850505 TI - Jumping off the bandwagon. PMID- 3850507 TI - Sickle cell disease: the disease that discriminates. PMID- 3850508 TI - Community: stretching resources. PMID- 3850509 TI - Pain relief. Home coMfort. PMID- 3850510 TI - Too much to ask? PMID- 3850512 TI - In for a rest? PMID- 3850511 TI - Buckley Vale district. On the move. One. PMID- 3850513 TI - Cosmic nursing. Making way for the light brigade. PMID- 3850514 TI - Nursing process. A rich experience. PMID- 3850515 TI - Surgical management of hiatus hernia. PMID- 3850516 TI - Surgical management of hiatus hernia. A new lease on life. PMID- 3850517 TI - Management. A daily forecast. PMID- 3850518 TI - Baby love? PMID- 3850519 TI - Computers in nursing. Languages with a difference. PMID- 3850520 TI - Computers in nursing. A package deal. PMID- 3850521 TI - Backchat: an appropriate training? PMID- 3850522 TI - Private health. A private affair? PMID- 3850523 TI - Privatisation. New brooms. PMID- 3850524 TI - Medical unemployment. Is there a doctor on the dole? PMID- 3850526 TI - Three steps forward. PMID- 3850525 TI - She'll take the high road. Interview by Laurence Dopson. PMID- 3850527 TI - Extra corporeal shock wave lithotripsy. PMID- 3850529 TI - Job Stress. Too much pressure. PMID- 3850530 TI - Handled with care. PMID- 3850528 TI - Budgeting for beginners. Finance for managers. PMID- 3850531 TI - Confidence with practice. PMID- 3850532 TI - On the move. Two. Buckley Vale district. PMID- 3850533 TI - Systems of life No 129. Setting up the systems--29. PMID- 3850534 TI - Nurses and trade unions. PMID- 3850535 TI - Backchat: animal rights. PMID- 3850536 TI - Child health. Satisfying human needs. PMID- 3850537 TI - Child health. Comfort for the crying child. PMID- 3850538 TI - Money wise. PMID- 3850539 TI - The ditch digger who came up. Interview by Pamela Holmes. PMID- 3850540 TI - Advice that's too hard to swallow? PMID- 3850541 TI - Manpower audit. Distribution problems. PMID- 3850542 TI - Defending the all-rounder. PMID- 3850543 TI - Nursing in the Third World. Why aid can go wrong. PMID- 3850544 TI - Nursing in the Third World. Food, not pharmaceuticals. PMID- 3850545 TI - Nursing clinics for arthritics. PMID- 3850546 TI - The sugar debate. PMID- 3850547 TI - Management. Stateside staffing. PMID- 3850548 TI - On the move. Three. Conversion of a sceptic. Buckley Vale District. PMID- 3850549 TI - Thumbs up for dummies. PMID- 3850550 TI - Job stress. Warding off a crisis. PMID- 3850551 TI - Mental health nursing. Deliberate self-harm. PMID- 3850552 TI - Mental health nursing. Compassion is better than conflict. PMID- 3850554 TI - Doorway to quality nursing care. PMID- 3850553 TI - Independence of nursing profession. PMID- 3850555 TI - If the infant is ill. PMID- 3850557 TI - New strategies for nursing manpower. PMID- 3850556 TI - Patients' properties and valuables in the wards: things to be remembered by nurses. PMID- 3850558 TI - Care of patients having tetanus: a case study. PMID- 3850559 TI - Education for health administration in India. PMID- 3850560 TI - Nurses speak up for better health. PMID- 3850561 TI - Role of nurse in a leprosy hospital. PMID- 3850562 TI - The problem of pressure sores. PMID- 3850563 TI - Qualities of leadership. PMID- 3850564 TI - United we stand. PMID- 3850565 TI - Carer not caretaker. PMID- 3850566 TI - Patient's page. Denied paternity. PMID- 3850567 TI - Stoma care. 3. Drugs and diet. PMID- 3850568 TI - Psychiatry. Concept meets reality. PMID- 3850569 TI - Occupational health. An education in nursing. PMID- 3850570 TI - Midwifery revision. 2. The shock of birth. PMID- 3850571 TI - Legislation. 6. The European connection. PMID- 3850572 TI - Education. Developing a thirst. PMID- 3850574 TI - Treating ulcers. PMID- 3850573 TI - A question of satisfaction. PMID- 3850575 TI - Education. A minor task... PMID- 3850576 TI - Community. Weeding out the weed. PMID- 3850577 TI - Staff of life. PMID- 3850578 TI - Evacuating a VIP. PMID- 3850579 TI - Legislation 7. The decade so far. PMID- 3850580 TI - Management. Deciding factors. PMID- 3850581 TI - Stoma care. 4. Rehabilitation and problem solving. PMID- 3850582 TI - Midwifery revision. 3. Diabetes in pregnancy and parturition. PMID- 3850583 TI - Breaking point. PMID- 3850584 TI - A lack of sensitivity. PMID- 3850585 TI - Auditory difficulties. PMID- 3850586 TI - Down your way. Ayrshire and Arran. PMID- 3850587 TI - Midwifery revision. 4. The transition to motherhood. PMID- 3850588 TI - People. Aerial enterprise. Interview by Diana Campbell. PMID- 3850589 TI - The class of '85. PMID- 3850590 TI - Stoma care. 5. Body image and reproduction. PMID- 3850591 TI - The Hickman catheter. PMID- 3850592 TI - Mental handicap. Fears unfounded. PMID- 3850593 TI - Chronic breathing difficulties. PMID- 3850594 TI - Research. Pursuit of happiness. PMID- 3850595 TI - Psychiatry. My day at the Henderson. PMID- 3850596 TI - Finance. 1. Navigating the money maze. PMID- 3850597 TI - Education. A pilot scheme for high-flyers. PMID- 3850598 TI - Stoma care 6. Stoma care in youth and old age. PMID- 3850599 TI - Management. The night of the long knives. PMID- 3850600 TI - Community. Coping with CAPD. PMID- 3850601 TI - Being there. PMID- 3850602 TI - Health education. United against cancer. PMID- 3850604 TI - Patient's page. Dreaded visitation. PMID- 3850603 TI - Clinical. When givers prove unkind. PMID- 3850605 TI - Hostility in accident and emergency departments. PMID- 3850606 TI - Sloppy but comfortable. PMID- 3850607 TI - Education. Structure for study. PMID- 3850608 TI - Crisis in care. Managing stress in the ICU. PMID- 3850609 TI - [Indices of the kallikrein-kinin system of the blood in adolescent tuberculosis patients]. PMID- 3850610 TI - Isolation and characterization of a proteinase inhibitor from marama beans. AB - A protease inhibitor was purified from the African marama bean (Tylosema esculenturm). The inhibitor is present in large amounts, representing about 10.5% of the total protein. The molecular weight is slightly larger than soybean trypsin inhibitor and was estimated at 23,000 by SDS-gel electrophoresis or 24,500 by amino acid analysis. The amino acid composition was atypical of most other plant inhibitors with a cysteine content of only one or possibly two residues/mole and a blocked amino terminus. Inhibition studies indicated virtually no inhibition of chymotrypsin activity. Elastase, however, was inhibited to the same extent as trypsin, requiring about 2 moles of inhibitor for complete inhibition of the enzyme. PMID- 3850611 TI - Absence of "meaningful treatment": death in E.R. PMID- 3850612 TI - When R.N.'s fail to communicate: disaster. Case in point: Lambert v. Sisters of Mercy Health Corp. (369 N.W. 2d 417-IA). PMID- 3850613 TI - Legal case briefs for nurses. SC: husband supervises R.N.--wife: nepotism. MA: tax affidavit required: licensure. PMID- 3850614 TI - Tonsillectomy--anesthetic overdose: 1 million dollars damages. Case in point: Theophelis v. Lansing General Hosp. (366 N.W.2d 249-MI). PMID- 3850615 TI - Progressive resistance exercise for injury rehabilitation. Special emphasis on isokinetic training. PMID- 3850616 TI - Running shoes, orthotics, and injuries. AB - Running is the most visible expression of the continued interest in regular physical activities. Unfortunately injuries are common, primarily due to overuse, and a number of aetiological factors have been recognised. Of these, training errors can be responsible for up to 60% of injuries. The training surface, a lack of flexibility and strength, the stage of growth and development, poor footwear and abnormal biomechanical features have all been implicated in the development of running injuries. A thorough understanding of the biomechanics of running is a necessary prerequisite for individuals who treat or advise runners. Clinically, the configuration of the longitudinal arch is a valuable method of classifying feet and has direct implications on the development and management of running problems. The runner with excessively pronated feet has features which predispose him/her to injuries that most frequently occur at the medial aspect of the lower extremity: tibial stress syndrome; patellofemoral pain syndrome; and posterior tibialis tendinitis. These problems occur because of excessive motion at the subtalar joint and control of this movement can be made through the selection of appropriate footwear, plus orthotic foot control. The runner with cavus feet often has a rigid foot and concomitant problems of decreased ability to absorb the force of ground contact. These athletes have unique injuries found most commonly on the lateral aspect of the lower extremity: iliotibial band friction syndrome; peroneus tendinitis; stress fractures; trochanteric bursitis; and plantar fasciitis. Appropriate footwear advice and the use of energy-absorbing materials to help dissipate shock will benefit these individuals. Running shoes for the pronated runner should control the excessive motion. The shoes should be board-lasted, straight-lasted, have a stable heel counter, extra medial support, and a wider flare than the shoes for the cavus foot. For these athletes a slip lasted, curve-lasted shoe with softer ethylene vinyl acetate (EVA) and a narrow flare is appropriate. Orthotic devices are useful in selected runners with demonstrated biomechanical abnormalities that contribute to the injury. Soft orthotics made of a commercial insole laminated with EVA are comfortable, easily adjusted, inexpensive, and more for-giving than the semirigid orthotics which are useful in cases where the soft orthotic does not provide adequate foot control. A review of injury data shows an alarming rise in the incidence of knee pain in runners-from 18% to 50% of injuries in 13 years.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3850617 TI - Biomechanics, load analysis and sports injuries in the lower extremities. AB - The study of sports injuries has grown with the increase in importance of sport as a leisure-time activity. The origin of many sports injuries is assumed to be mechanical, with the forces and/or stresses acting on one element of the human locomotor system exceeding the critical limits. This article presents some biomechanical considerations on the mechanical aspect of the aetiology, reduction and treatment of sport injuries with special emphasis on the lower extremities. Forces acting on the locomotor system have a magnitude, a point of application and a direction. Both magnitude and geometry (point of application and direction) are important in load analysis. However, the geometrical aspect of externally acting forces is an extremely important aspect, especially with respect to reduction of load in practical situations. Load analysis is usually performed with force transducers and optical instruments in order to quantify magnitude and geometry. Two possible approaches to load analysis are discussed. One approach works with the critical limits of biomaterials. This approach shows that the local stresses for cartilage, tendon and bone are in the order of 10 to 20% of the critical limit for normal daily activities, such as walking. The second approach deals with strategies to reduce load, assuming that it is usually too high in sports activities. The nature of playing surfaces and shoes are revealed as important possibilities for load reduction. PMID- 3850618 TI - [Equal care for all]. PMID- 3850619 TI - [Sarcoidosis]. PMID- 3850620 TI - [Old...and demented]. PMID- 3850621 TI - [Tears and cries of young children: from normal to pathologic]. PMID- 3850622 TI - [Activities in a medical unit]. PMID- 3850623 TI - [Villa Maraini. An open therapy]. PMID- 3850624 TI - [The hospital and its budget. Landmarks in order to understand]. PMID- 3850625 TI - [The role of the nurses' aide]. PMID- 3850626 TI - [Computers and nursing care]. PMID- 3850627 TI - [Professional documentation. Practical guide for the nurse practitioner]. PMID- 3850628 TI - When you leave your friends behind. PMID- 3850629 TI - Why I help my patients feed themselves. PMID- 3850630 TI - What lasers can do for your glaucoma patient. PMID- 3850631 TI - An oasis for cancer patients. PMID- 3850632 TI - Saving the baby when Mom has herpes. PMID- 3850633 TI - Nurse practitioners: how are they doing now? PMID- 3850634 TI - This NP covers for a physician. PMID- 3850635 TI - When your patient has jaw surgery. PMID- 3850636 TI - Inservice after dark? That's right. PMID- 3850637 TI - Helping your patient build a sturdier body image. PMID- 3850638 TI - If you question your patient's competence. PMID- 3850639 TI - We need just one door to nursing. PMID- 3850640 TI - When to worry about vitamin overdose. PMID- 3850641 TI - New gains for nursing research. PMID- 3850642 TI - Gerontology--a learning experience. PMID- 3850643 TI - Distance education takes off. PMID- 3850644 TI - Telemedicine for Ontario. PMID- 3850645 TI - Complement factor D in serum. An indicator of glomerular filtration rate in chronic inflammatory arthritis. PMID- 3850646 TI - Identification of T-kininogen in high and low molecular weight kininogens deficient rat (brown Norway Katholiek strain). AB - Kinin release in Brown Norway Katholiek (B/N-Ka) rat plasma was compared with those of Brown Norway Kitasato and Sprague-Dawley rats by treating with rat plasma kallikrein, rat urinary kallikrein, snake venom kininogenase and trypsin. B/N-Ka rat plasma yielded no detectable amount of kinin by either plasma kallikrein, urinary kallikrein or snake venom kininogenase, but yielded variable amount of kinin by trypsin. The released kinin was proved to be isoleucylseryl bradykinin by high performance liquid chromatography and bioassay profiles. B/N Ka rat plasma formed a precipitation line against antiserum to T-kininogen, but no line against antiserum to HMW kininogen-light chain. PMID- 3850647 TI - Kinetic analysis of plasminogen activation by purified plasma kallikrein. AB - Kinetics of plasminogen activation by purified activated plasma kallikrein have been studied in a purified system using Glu-plasminogen as a substrate. A synthetic paranitroanilide substrate was used for quantification of the formed plasmin. In that system kallikrein cleaved plasminogen with a Km value of 0.56 microM, a kcat of 1.6 X 10(-4) s-1 and a catalytic efficiency kcat/Km of 2.7 X 10(-4) s-1 microM-1. Addition of CNBr fibrinogen fragments resulted in an increase of Km to 1.18 microM, an increase of kcat to 5.1 X 10(-4) s-1 and an increase in the catalytic rate constant kcat/Km to 4.3 X 10(-4) s-1 microM-1. Addition of purified high molecular weight kininogen had no effect on the kinetics of plasminogen activation whether or not stimulating fibrinogen fragments were present. A stimulating effect of fibrinogen fragments could also be shown for the cleavage of the low molecular weight paranitroanilide substrate H-D-Pro-Phe-Arg-pNA by kallikrein; in that system the kcat for substrate cleavage by kallikrein increased from 200 s-1 to 280 s-1, while the Km value remained unchanged. From these data it can be concluded that based on enzyme kinetic studies plasminogen activator activity of purified plasma kallikrein is about 1/1000 of that of high molecular weight urokinase and is only slightly influenced by addition of stimulating fibrinogen fragments. Addition of high molecular weight kininogen does not affect plasminogen activator activity of purified plasma kallikrein. PMID- 3850648 TI - Clotting activities and antigen concentrations of contact factors in kidney disease. AB - Factor XII, prekallikrein (PK) and high molecular weight kininogen (HMWK) clotting activities and antigen concentrations in kidney disease patients were studied. Chronic hemodialysis led to a reduction of F XII, PK and HMWK clotting activities. F XII and PK antigen levels were also low. In contrast, the HMWK antigen was normal with respect to concentration as well as electrophoretic migration behaviour on 2 D-immunelectrophoresis. In kidney transplant recipients more than three month after the transplantation, we found an increased of F XII and PK clotting activities, which appeared to depend on the time elapsed since the operation. However, the antigen levels remained normal. The group of chronic kidney disease patients not requiring hemodialysis exhibited normal mean values of all three clotting activities as well as normal F XII and HMWK antigen levels. The PK antigen was reduced. However, a separate evaluation of F XII clotting activities (F XII:C) in patients with glomerular nephritis showed elevated F XII:C which correlated with the BUN values. During acute processes of the kidney disease we observed very high PK clotting activities, which normalized with stabilization of the patients. Our results show that the contact phase coagulation factors behave abnormally in certain kidney disease patients. PMID- 3850649 TI - [Evaluation of nursing activities. Background and goals]. PMID- 3850650 TI - [Safe handling of cytostatic agents]. PMID- 3850652 TI - [The documentation of nursing processes. Daily report. II]. PMID- 3850651 TI - [The geriatric patient in the hospital]. PMID- 3850653 TI - [Function evaluation health care]. PMID- 3850655 TI - [Development of nursing standards. Urge for quality assurance]. PMID- 3850654 TI - [Does the patient have a right to complain?]. PMID- 3850656 TI - [Automation, the solution? What can the computer do for us, nurses?]. PMID- 3850657 TI - [Computers in nursing]. PMID- 3850658 TI - [Computers in nursing. Data like a flow of water]. PMID- 3850659 TI - [Computer applications in a nursing department]. PMID- 3850660 TI - [Creating nursing care plans with the computer]. PMID- 3850661 TI - [Computer support of nursing care]. PMID- 3850662 TI - [Automatic data processing in nursing management]. PMID- 3850663 TI - [Important aspects in the use of computers in nursing]. PMID- 3850664 TI - [They are far too busy... An observation with reference to conversations with patients]. PMID- 3850665 TI - [The effect of noise on the well-being of mentally retarded. A study]. PMID- 3850666 TI - [A.D.V. (reduction in working hours) and the consequences for inservice education]. PMID- 3850668 TI - Perioperative nursing: vital to holistic care. PMID- 3850667 TI - Posterior capsulectomy with the Nd: YAG laser. PMID- 3850669 TI - Keeping up-to-date in rural ORs. PMID- 3850670 TI - Medical-legal issues associated with organ donation and transplantation. Part II. Living donors. PMID- 3850671 TI - Trauma: O.R. readiness makes a difference. PMID- 3850673 TI - Computers to the OR--STAT! (Part 1). PMID- 3850672 TI - Total knee arthroplasty: a team approach. PMID- 3850674 TI - Carotid endarterectomy: restoring cerebral circulation. PMID- 3850675 TI - Intra-arterial infusion chemotherapy: implanting the Infusaid pump. PMID- 3850676 TI - O.R. nursing is nursing. PMID- 3850678 TI - Health problems encountered by nurse practitioners and physicians in family practice clinics. PMID- 3850679 TI - Taking risks with health. PMID- 3850680 TI - Ethical issues in nursing research. PMID- 3850681 TI - Characteristics of productive research environments in nursing. PMID- 3850682 TI - Using research in practice. The current context. PMID- 3850683 TI - Computer use and nursing research. PMID- 3850684 TI - Development of a research group. A Parsonsian view. PMID- 3850685 TI - Collaboration and the research process. PMID- 3850687 TI - Decubitus ulcer care: a comparative study. PMID- 3850686 TI - Developing an instrument for the assessment of family dynamics. PMID- 3850688 TI - Development of a research group. A group dynamics view. PMID- 3850689 TI - Autotutorial and lecture-demonstration instruction: a comparative analysis of the effects upon students' learning of a developmental assessment skill. PMID- 3850690 TI - How families manage a pediatric hospitalization. PMID- 3850691 TI - Stages of coming out: an ethnographic approach. PMID- 3850692 TI - Space use, privacy, and territoriality. PMID- 3850693 TI - Couvade: patterns, predictors, and nursing management: a research proposal submitted to the division of nursing. PMID- 3850694 TI - Ethical issues in nursing research. PMID- 3850695 TI - Conducting meta-analytic studies. PMID- 3850696 TI - Strategies for teaching nursing research. Developing a research attitude through questioning. PMID- 3850697 TI - Research utilization: theoretical perspectives. PMID- 3850698 TI - Health behavior choice as related to self-actualization and health conception. PMID- 3850699 TI - Life stress and cystic fibrosis. PMID- 3850700 TI - Masculinity and femininity in transvestite, transsexual, and gay males. PMID- 3850701 TI - Empathy in faculty and students in different types of nursing preparation programs. PMID- 3850702 TI - Nursing research from 1977 to 1981. PMID- 3850703 TI - Linguistic analysis of questionnaire responses: methods of coping with work stress. PMID- 3850704 TI - Ethical issues in nursing research. PMID- 3850705 TI - Problems in measuring reciprocity with difference scores. PMID- 3850706 TI - The University of California at San Francisco Research Environment. PMID- 3850707 TI - Research in cultural diversity. Reliability issues in cross-cultural research. PMID- 3850708 TI - [Inhibition of the catalytic activity of pepsin(ogen) in human urine. II. Isolation of uropepsin inhibitors from human urine concentrates using affinity chromatography with pepsin sepharose 4B]. PMID- 3850709 TI - The emerging role of the family clinical nurse specialist. PMID- 3850710 TI - A collaborative approach to research in oncology nursing practice. PMID- 3850711 TI - Reduced cofactor function of human high molecular weight kininogen induced by rat plasma kallikrein. AB - Plasma kallikrein purified from acetone-activated, plasminogen-free rat plasma yielded in polyacrylamide gel electrophoresis protein bands corresponding to Mr values of 143,000 (main band) and 135,000 (lighter band). After SDS treatment without reduction the protein pattern had changed to two strong bands corresponding to Mr values of 87,000 and 78,000. Gel electrophoresis of kallikrein purified from plasma of rats pretreated with clinical dextran (200 mg/kg intravenously) produced main bands corresponding to Mr values of 120,000 130,000 and 78,000-80,000 for native samples and SDS-treated samples respectively (Johansen & Briseid 1983). Both kinds of kallikrein reduced the capacity of human high molecular weight kininogen to function as a cofactor in the surface-mediated activation of factor XII in a crude plasma preparation. The preparation obtained from plasma of dextran-treated rats was significantly more potent than was the normal kallikrein preparation, both as regards the effect against HMrK, and as an activator of plasminogen. PMID- 3850712 TI - The effect of age on the relationship between plasma elastase and ingested lipid. AB - In human subjects ranging in age from 57 to 99 years the elastase content of the plasma increased following the ingestion of a lipid-rich meal. Animal experiments have shown that peak elastase levels are attained after 3 to 4 hours, which are similar to the appearance of peak levels of triglyceride. The difference between the postprandial and fasting levels of elastase is age-dependent, being greatest among the lowest ages studied and falling exponentially at ages above 65-70. Since it has already been shown that individuals aged 65-75 with high fasting levels of plasma elastase are less likely to survive into their ninth or tenth decades it is suggested that the measurement of the increase in elastase associated with the intake of a lipid-rich meal can provide an acceptable indication of survival potential. PMID- 3850713 TI - Nosocomial infections with methicillin and tobramycin resistant Staphylococcus aureus--implication of physiotherapy in hospital-wide dissemination. AB - From January 1979 to July 1980, methicillin and tobramycin resistant Staphylococcus aureus was isolated from 45 patients at a Veteran's Administration hospital. Of these 45, 36 (80%) had clinical infections involving non-surgical wounds (16), urinary tract (10), blood (8), surgical wounds (7), and sputum (5). The epidemic strain had a single phage type (47/54/75/77/83A), a single, 16.4 Md plasmid, and produced an aminoglycoside inactivating enzyme (AAD[4']). Compared to a control group of patients with nosocomial antibiotic susceptible S. aureus infections, patients with the epidemic strain had more hospital days before a positive culture (p = .004), more severe underlying disease (p = .006), received antibiotics more often (p = .0018), and underwent physiotherapy more often (p = .00007). Although selected environmental and personnel cultures were negative for the epidemic strain, epidemiologic investigation suggested that hospital-wide dissemination of S. aureus may have occurred through patient contacts in the physiotherapy department with subsequent clusters of cases occurring on several wards. PMID- 3850715 TI - Theophyllines and food. PMID- 3850714 TI - What are orthostatic BP changes? PMID- 3850716 TI - Lessons from history: the picket-guard nurse. PMID- 3850717 TI - Daring to care. PMID- 3850718 TI - Moving to a nursing model. PMID- 3850719 TI - Assessing the elderly. 2. Altered presentations. PMID- 3850720 TI - A test in time. PMID- 3850721 TI - Chicago. An American crossroads. PMID- 3850722 TI - A double life for a dental irrigation device. PMID- 3850723 TI - Literature to go. PMID- 3850724 TI - 'Just' an RN? PMID- 3850725 TI - A guide for community-based nursing services. PMID- 3850726 TI - Boards of nursing: composition, member qualifications, and statutory authority. PMID- 3850727 TI - Postoperative wound infection surveillance by use of bacterial contamination categories. AB - A prospective 2-year surveillance of 7129 wounds was conducted on all surgical services of the University Hospital in Seattle to determine the postoperative infection rates by surgical wound category. Rates on all services for clean (0.8%), clean-contaminated (3.4%), contaminated (3.6%), and dirty (9.9%) wounds were recorded and compared to rates reported in the surgical literature. The overall wound infection rate was 1.7%. When the incidence of infection for a specific service in a category was observed to be in excess of a previously reported upper rate, patient charts were critically reviewed to determine if host, pathogen, or technical factors could be implicated in the excessive infection rates. Extending postoperative wound surveillance to include critical chart analysis in these categories provides hospital staff members responsible for infection control the opportunity to organize corrective measures against excessive rates in a broader category of wounds. PMID- 3850728 TI - Failure of the urinalysis and quantitative urine culture in diagnosing symptomatic urinary tract infections in patients with long-term urinary catheters. AB - Since urine culture and urinalysis are both of uncertain reliability in diagnosing symptomatic urinary tract infections in patients with chronic urinary catheters, we performed sequential quantitative cultures and urinalyses on 177 urine specimens from 14 patients with long-term urinary catheters during a 12 month period. We found high concentrations of greater than or equal to 2 species of aerobic bacteria or fungi in most specimens examined. Pyuria was common even during asymptomatic periods; hematuria was less common. During symptomatic urinary tract infections, neither urinalyses nor quantitative urine cultures exhibited changes specific for such infections. Thus neither urinalysis nor urine culture appears to be a reliable test for symptomatic urinary tract infections in patients with chronic urinary catheters. PMID- 3850729 TI - Immunization roulette: influenza occurrence in five nursing homes. AB - Immunization with A/Bangkok 1/79 (H3N2) vaccine appeared to be protective for immunized nursing home residents during an influenza outbreak in 1983. All thirteen deaths during the 4-month period of the study were among residents of two of five nursing homes where influenza immunization was low or nonexistent. Death certificates included a diagnosis of I-ILI for only six of the 13 decedents, showing that I-ILI may be greatly underreported as a cause of death, and skewing statistical evaluation of the impact of influenza in nursing home populations. The cost of protection is only a small fraction of the cost to society of caring for seriously ill nursing home residents with I-ILI who must be admitted to a hospital. PMID- 3850730 TI - Professional ethics for infection control: the changing role of the infection control practitioner. PMID- 3850731 TI - Immune complexes and complement abnormalities in patients with cystic fibrosis. Increased mortality associated with circulating immune complexes and decreased function of the alternative complement pathway. AB - Serum samples from 139 patients with cystic fibrosis (CF) were tested for complement abnormalities and circulating immune complexes (CIC). We found no consistent changes in whole complement activity. However, we found CIC in 29% of these patients and decreased activity of the alternative complement pathway (ACP) in 36%. During 5 yr of observation, mortality was much higher in patients whose sera contained CIC (p less than 0.001) or decreased ACP activity (p less than 0.01). Of patients with both abnormalities, 31% died; however, no deaths occurred in patients with normal ACP activity and negative tests for CIC (p less than 0.001). During a subsequent 2.5-yr period, 55% of patients greater than or equal to 21 yr old with both findings died. In contrast, no deaths occurred in older patients lacking this combination (p = 0.0062). Circulating immune complexes but not decreased ACP activity were an independent risk factor for death. Our findings support the hypothesis that humoral immune mechanisms may contribute to morbidity and mortality in CF. PMID- 3850732 TI - Augmentation of elastase-induced emphysema by cigarette smoke. Description of a model and a review of possible mechanisms. AB - Rats were treated with a single endotracheal dose of purified porcine pancreatic elastase (400 IU/kg), exposed to undiluted cigarette smoke from Kentucky 2RI reference cigarettes (one 35-ml puff/min for 10 min daily, 5 days per week, for 12 wk) or with a combination of elastase followed by smoke exposure. A number of significant functional abnormalities were observed in the lungs of rats receiving elastase; these included reduced spontaneous ventilation, enlarged subdivisions of lung volume, loss of elastic recoil, and diminished gas exchange capacity. Rats receiving both elastase and cigarette smoke had significantly more severe pulmonary dysfunction than did rats treated with elastase alone. Morphometric measurements of mean linear intercept demonstrated a loss of alveolar fine structure, with enlargement of distal air spaces in elastase-treated rats. These changes were significantly more severe in rats treated with both elastase and cigarette smoke. Pulmonary function tests and morphometric measurements in sham treated rats and in rats exposed to cigarette smoke only were not significantly different from those in untreated control animals. It is concluded that elastase induced emphysema in rats is enhanced by exposure to whole cigarette smoke. PMID- 3850733 TI - Pediatric trauma. Medical aspects. PMID- 3850734 TI - Pediatric trauma. Emotional aspects. PMID- 3850736 TI - Psychosurgery. Neurosurgical procedures for psychiatric disorders. PMID- 3850735 TI - Pediatric trauma units. Nursing's input into development. PMID- 3850737 TI - OR personnel functions. Testing of observability. PMID- 3850738 TI - Hypnosis and the surgical patient. Effects of positive suggestion. PMID- 3850739 TI - Making the new surgeon feel welcome. PMID- 3850740 TI - AORN's education programs are accredited by ANA for another four years. PMID- 3850741 TI - Home phototherapy for newborn jaundice. PMID- 3850742 TI - Infant car safety: the role of perinatal caregivers. PMID- 3850743 TI - Protecting intellectual property: copyright for journal authors and conference speakers. PMID- 3850744 TI - The lactation consultant: a new profession. PMID- 3850745 TI - Assessing satisfaction with childbirth. PMID- 3850746 TI - Reactions to transfer out of a hospital birth center: a pilot study. PMID- 3850747 TI - The birth of a first child: do women's reports change over time? PMID- 3850748 TI - Doctors, maternity patients and social scientists. PMID- 3850749 TI - Doctors, maternity patients and social scientists go beyond risks and rates in obstetric care. PMID- 3850750 TI - Nursing research: its importance to the profession and to nursing practice. PMID- 3850751 TI - Quantitation of antibody uptake on A group erythrocytes using immunoautoradiography and monoclonal IgM anti-A. AB - The number of antibody molecules on individual erythrocytes was counted in A1, A2, A3 B and A group individuals using immunoautoradiography (IAR) and monoclonal IgM anti-A1. Quantitation was also done for A group pregnant women. The number of antibody molecules on different red cells of an individual varied widely. Gross variations were also noted in cells of different individuals from one and the same group. The mean values of the uptake of the number of antibody molecules showed the following range A1 greater than A2 greater than Ax greater than A3B. When compared to the average for total A1 adults, red cells of pregnant women and newborn infants showed a 10.7% and 19.7% reduction respectively, in antibody uptake. The mean number of antibody molecules per A1 adult red cells was 5.6 +/- 3 X 10(4), while A2 had 0.85 +/- 0.35 X 10(4) molecules, thus showing a significant quantitative variation. PMID- 3850752 TI - Immunoglobulin binding to platelets. The effect of aggregated IgG. AB - When fresh platelets were incubated in serum to which heat-aggregated IgG was added, the increase of platelet-associated IgG was paralleled by increased levels of platelet-associated IgM, IgA and albumin as determined by ELISA. The increase was observed regardless of whether the platelets were quantified by conventional platelet counting or with the help of 51Cr-labelling, which was done to avoid potential counting errors induced by platelet fragmentation. In thrombocytopenic patients a correlation between in vivo bound platelet-associated albumin and IgG could be confirmed. It was concluded that aggregated IgG induces an increased binding of serum immunoglobulins and albumin to platelets in vitro. PMID- 3850753 TI - Respiratory distress as primary symptom of relapse in a patient with non-Hodgkin lymphoma. AB - A report on a 74-year old woman with high-grade malignant non-Hodgkin lymphoma in clinical remission, who suddenly developed episodes of severe dyspnea and wheezing. Clinical and roentgenographic investigations including tomography of the trachea failed to demonstrate any lesion. Fiberoptic bronchoscopy revealed and endotracheal, polyp-like lymphoma 3 cm above the carina, which was immediately operated. Other sites of relapse (submandibular lymph-nodes) were found 2 weeks after the operation. Second-line chemotherapy (IMVP 16) was able to induce a second remission. PMID- 3850755 TI - LAMH: Language Alternative for Mentally Handicapped. PMID- 3850754 TI - Long-lasting remission of hairy cell leukemia after eight weeks' therapy with low dose alpha-(leucocyte-)interferon. PMID- 3850756 TI - Gout is no joke. PMID- 3850757 TI - Pastoral health care. 2. PMID- 3850758 TI - Why do young people turn to drugs. PMID- 3850759 TI - Inability of caliper measurement to enhance observer agreement in the interpretation of coronary cineangiograms. AB - Important clinical decisions are made on the basis of the interpretation of the degree of stenosis in the coronary cineangiogram. Thus, minimization of observer variation (both intra and inter) is crucial. The purpose of this investigation was to determine if measurement of stenotic lesions by caliper (CM) as compared with the usual eyeball method (EM) would reduce observer variation. Five observers, using the AHA scoring system, estimated maximal luminal narrowing in 14 segments on 10 films providing 2 reports on each film by EM and 2 by CM, thus making observations on 2800 segments. This allowed analysis of intraobserver variation for each reporter for method EM and CM, and for interobserver variation by each method. Since chance agreement is an important component in an observational study, a correction for this was made using the Kappa statistic. The results revealed that the mean Kappa by EM was 0.71 compared to 0.63 by CM (1 being perfect agreement and 0 no agreement). Agreement was much greater in proximal rather than distal segments. Interobserver agreement was consistently higher by EM K = 0.62 than CM K = 0.53 (p = 0.0007). A delineation of the types of disagreement and their clinical significance are important considerations in the evaluation of observer variation. It is concluded that the use of a caliper does not enhance either intra or interobserver agreement. PMID- 3850760 TI - Arrhythmogenic right ventricular dysplasia: detection by radionuclide ventriculography. AB - A 35 year old female patient was referred for investigation and treatment of recurrent ventricular tachycardia. Cardiac examination and the echocardiogram were normal. Equilibrium radionuclide ventriculography demonstrated a reduction in right ventricular ejection fraction (rest and exercise) while left ventricular ejection fraction was normal. It is proposed that radionuclide ventriculography may be the noninvasive study of choice to screen patients for arrhythmogenic right ventricular dysplasia. The right ventricular response to exercise may provide additional evidence for right ventricular dysfunction based on relative changes compared to the left ventricle. The diagnosis of arrhythmogenic right ventricular dysplasia may be subsequently confirmed by right ventricular angiography or endomyocardial biopsy, both of which are techniques which may not be performed during routine cardiac catheterization in the absence of the radionuclide ventriculography findings to suggest right ventricular dysfunction. PMID- 3850761 TI - Unlocking the mystery of systolic anterior motion: the key is timing. AB - Though a generation has elapsed since the recognition of hypertrophic cardiomyopathy, controversy continues to rage regarding its pathophysiology. Central to the controversy is the mechanism and significance of the pressure gradient. Systolic anterior motion (SAM) of the mitral valve, as demonstrated by angiography and echocardiography, is accepted as the cause of the pressure gradient by some groups but not others. The latter authors suggest that: SAM is an incidental effect of vigorous contraction which is itself the cause of the pressure gradient and that the pressure gradient does not represent left ventricular outflow obstruction. These views are examined in light of recent studies that have assessed the temporal and quantitative relationship between SAM and the pressure gradient. It is concluded that SAM with early mitral septal contact is the cause of the pressure gradient, and represents true left ventricular outflow obstruction. PMID- 3850762 TI - Effect of myocardial ischemia and type I antiarrhythmic drug therapy on exercise QT intervals. AB - Direct measurement of the QT interval during exercise is the preferred method to assess duration of this interval with changes in heart rate. The influence of exercise induced ischemia or type I antiarrhythmic drugs on the exercise QT interval has not been well studied. Exercise electrocardiograms and thallium scintigraphy were performed in three groups-normals, patients with coronary artery disease, and patients taking type I antiarrhythmic drugs. The change in QT interval with heart rate increases during exercise was compared among the three groups. The QT interval shortened progressively in the normal group. Demonstrable myocardial ischemia (positive thallium scan) had no effect on the QT interval. Type I antiarrhythmic drugs prolong the QT interval at rest compared to normals, but the interval shortened to the same degree as in normals during exercise. Thus, normal values can be used to compare QT intervals in patients with coronary artery disease. These values do not apply to patients receiving type I antiarrhythmic drugs. PMID- 3850763 TI - Optimized count-based scintigraphic left ventricular volume measurement. AB - Count-based scintigraphic left ventricular end-diastolic (LVED) volume measurement was optimized using a reproducible method for determining left ventricular counts and an independently measured average apparent tissue attenuation coefficient (0.16 cm-1). Tissue depth was calculated by triangulation. Results were compared to single-plane contrast ventriculographic volumes by an area-length method, performed within one hour, in 18 patients. The overall correlation of measurements of LVED volume by the 2 methods was 0.96 with standard error of the scintigraphic estimate of 15.8 ml. For 6 patients with angiographically normal wall motion, the correlation of volume measurements was 0.99 with standard error of the estimate of 5.1 ml. The mean absolute difference in LVED volume by the 2 methods was 3.8 ml in the group with normal wall motion compared to 19.2 ml in the 12 patients with angiographically abnormal wall motion. Area-length LVED volume calculation assumes that the left ventricle conforms to a standard shape. Discrepancies in volume estimates with abnormal ventricular wall motion suggest that the area-length method is less accurate. Optimized count-based LVED left ventricular volume measurement is accurate and might be preferable to single-plane contrast angiographic volume measurement of abnormal ventricles. PMID- 3850764 TI - Pharmacokinetics, antiarrhythmic effects, and tissue concentrations of amiodarone and desethylamiodarone in dogs with acute coronary artery occlusion. AB - A single bolus of 5 or 40 mg/Kg of amiodarone was injected 24 hours after inducing coronary artery occlusion in the closed-chest dog preparation. Plasma pharmacokinetic profile was determined and the calculated t1/2 beta of 3.5 +/- 2.8 and 3.2 +/- 0.6 hour after 5 or 40 mg/Kg dose, respectively, were obtained. The major metabolite, desethylamiodarone, was detected within 15 minutes of the single bolus of amiodarone. At 6 hours after amiodarone administration, the animals were killed and tissue concentrations of amiodarone and desethylamiodarone were measured. Two additional peaks in the HPLC chromatograms were observed in plasma and tissue samples of most dogs given 40 mg/Kg I.V. amiodarone and these most likely are due to unidentified metabolites of the drug. The highest drug concentration was found in the lungs. Tissue to plasma drug rations suggested that accumulation of amiodarone and perhaps desethylamiodarone was different for different tissues. Ventricular arrhythmias were not abolished by either of the two doses of amiodarone; however, there was a gradual and statistically significant decrease in the number of ventricular premature beats and ventricular tachycardia beats over the six-hour period after a single 40 mg/Kg I.V. bolus. At the time of reduction in the arrhythmia frequency, tissue levels of both amiodarone and desethylamiodarone in the border and infarct zone of the myocardium were approximately 50% as high as in the normal zone. Plasma drug levels did not correlate well with tissue concentrations. However, there was an excellent correlation between drug levels in WBCs and various tissues except the lung. It is concluded that amiodarone is rapidly metabolized into desethylamiodarone and at least two other unidentified compounds; a large dose of amiodarone is necessary to produce some decrease in ventricular arrhythmias associated with acute coronary artery occlusion; tissue concentrations may be better correlated with drug levels in WBCs than in plasma, and coronary artery occlusion does not affect acute pharmacokinetic profile of the drug. PMID- 3850765 TI - Prostaglandins and heart disease. AB - The role of prostaglandins (PGs) in cardiac pathophysiology has been reviewed with special emphasis on clinically applied aspects. Several PGs are synthesized and released by the heart and coronary vessels. Their synthesis is altered by various factors such as physical manipulation of tissue, pharmacological treatments and pathological conditions such as myocardial over-reactivity and ischemia. The involvement of PGs in cardiac dysfunction remains controversial, although it has been proposed that various PGs such as PGI2 or PGB2 may play a role in disaggregating platelets, inhibiting thrombus progression and coronary vasodilatation. The balance between thromboxane A2 (TXA2), a proaggregatory agent released from platelets and PGI2 may have a role in the genesis and management of angina and myocardial infarction. The use of non-steroidal anti-inflammatory agents in these conditions remains controversial; their possible beneficial effects are believed to be due to inhibition of TXA2 synthesis whereas their failure to be effective may be a consequence of concomitant inhibition of PGI2 production. Modulation of endogenous PG synthesis and administration of exogenous PGs or their analogues appear to be two therapeutic approaches in the management of certain cardiac diseases. Accordingly, there is a great need for synthesizing stable and potent PG analogues as well as specific inhibitors of PG synthesis in addition to studying their pharmacology and therapeutics. In this review we have emphasized the involvement of PGs in the pathogenesis of some forms of cardiac disease and have highlighted some therapeutic implications of these substances for the treatment of heart disease. PMID- 3850766 TI - Effect of chronic prazosin treatment on the cardiac function and electrolytes in failing heart due to chronic mitral insufficiency. AB - The effect of three months of prazosin treatment on the hemodynamics, cardiac extracellular space; plasma, tissue and intra-cellular Na+, K+, and Ca++ were investigated in dogs with left ventricular failure due to chronic mitral insufficiency. Mitral insufficiency of 6 months duration significantly decreased the LV systolic pressure, LV dp/dt, LV (dp/dt)/IIP, LVWI, CI, and increased the LVEDP, mean right atrial pressure, heart rate and systemic vascular resistance. Associated with these hemodynamic changes were an increase in the extra-cellular space, tissue and intracellular K+; and a decrease in the tissue and intracellular Ca++. Prazosin treatment produced an improvement in the hemodynamics which was associated with a decreased in the extracellular space, and intracellular K+, and an increase in the intracellular Ca++. Plasma Na+ and Ca++ increased with 6 months of M.I. Prazosin treatment brought back the plasma Na+ and K+ to control level. However, plasma Ca+ decreased significantly with prazosin treatment. The changes in right ventricular hemodynamics and electrolytes were not consistent with the right ventricular failure. These results indicate that decrease in the myocardial contractility in chronic heart failure due to mitral insufficiency might be due to a decrease in the intracellular Ca++. Prazosin treatment was able to reverse the hemodynamic and electrolyte changes induced by failing heart due to mitral insufficiency. PMID- 3850767 TI - Calcium paradox in the neonatal heart. AB - The age-dependent effect of a calcium-free medium on myocardial mechanical function, high energy phosphates (HEP), as well as HEP and creatine phosphokinase (CPK) release was studied in the arterially perfused rabbit heart. The effect in the newborn was significantly less than in the adult with the transition occurring between two and five weeks of age. Thirty minutes of Ca2+ depletion had no significant effect on tissue high energy phosphate, creatine phosphokinase (CPK) release and creatine release. During Ca2+ repletion, the recovery in developed tension (DT) and +dT/dt (max) in the newborn was significantly greater than in the adult. The increase in resting tension in the newborn was significantly less in the newborn than in the adult. A significant decrease in tissue adenosine triphosphate (ATP) and CP was observed after Ca repletion following 5 minute Ca depletion in the adult and only after 30 minutes depletion in the newborn. Significant increases in CPK, creatine, and adenine nucleotide release were observed during Ca2+ repletion and the amounts released in the adult were significantly greater than in the newborn. There was a significant correlation between the percent recovery of +dT/dt (max) and tissue ATP content in both age groups. In addition, there was an inverse correlation between the recovery of +dT/dt (max) and log CPK release. These data indicate that the Ca2+ paradox effect is minimal in the newborn rabbit and becomes similar to that of the adult at five weeks of age.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3850768 TI - Adrenochrome uptake and subcellular distribution in the isolated perfused rat heart. AB - Adrenochrome uptake and its subcellular distribution were examined using isolated perfused rat heart preparation. The heart was perfused for 30 min with a medium containing 1 to 50 mg/l of 14C-adrenochrome and the subcellular fractions were isolated to measure their radioactivities. A decline in contractile force, a rise in resting tension and an increase in adrenochrome uptake by the heart were seen to depend upon the time of perfusion and the concentration of adrenochrome in the medium. The sarcolemmal fraction had the highest uptake of adrenochrome and this was followed by the microsomal fraction; some accumulation of adrenochrome was also observed in the myofibrillar and mitochondrial fractions. Either 10 or 20 min reperfusion of the heart previously exposed to 25 mg/l of adrenochrome, resulted in approximately 50 or 37% of the radioactivity remaining in the heart; this indicates irreversible binding of adrenochrome to the tissue. Reperfusion of the heart showed restoration of the resting tension but the contractile force did not show any recovery. Propranolol and iproniazid, which have been shown to inhibit the adrenochrome induced cardiotoxicity, reduced adrenochrome uptake by the heart, and prevented adrenochrome-induced depression in contractile force and rise in resting tension. These results indicate that adrenochrome is taken up by the heart and induces cardiac disturbances through its action on different subcellular organelles in the myocardium. PMID- 3850769 TI - Oxygen consumption and tissue Ca2+ uptake during reoxygenation after hypoxia in the rabbit. AB - The relationship between tissue Ca uptake and myocardial oxygen consumption during reoxygenation after 20, 40, and 60 min hypoxia was studied in the isolated arterially perfused rabbit septum. During reoxygenation after 40 and 60 min of hypoxia, tissue 47Ca2+ uptake increased significantly, and myocardial oxygen consumption (MVO2) (approximately 125% of control) was significantly greater than the prehypoxic value. Recovery of myocardial ATP content and mechanical function after 40 and 60 min of hypoxia was minimal, and it was inversely related to net increases in tissue Ca2+ uptake. In muscles perfused with Tris buffer, tissue Ca2+ gain during reoxygenation was significantly less and recovery of tissue ATP was significantly greater than in muscles perfused with Krebs-Henseleit buffer. MVO2 was not enhanced during reoxygenation after 40 min of hypoxia in muscles perfused with Tris buffer. These data suggest that tissue Ca2+ gain during reoxygenation utilizes energy from mitochondrial electron transport or from ATP hydrolysis causing increased MVO2 and depression in total adenine nucleotides and mechanical function. PMID- 3850770 TI - Management of cardioinhibitory hypersensitive carotid sinus syncope with permanent cardiac pacing--a seventeen year prospective study. AB - Sudden and unannounced syncope due to increased vagal tone as manifested by hypersensitivity of the carotid sinus mechanism is not uncommon. A 17 year prospective study of 89 patients with cardio-inhibitory (Type 1) hypersensitivity showed that males outnumbered females 4.5:1. The age range at the onset of symptoms was 37 to 88 years with an average of 63 years. Hypersensitivity of the right carotid sinus was 7:1 compared to the left. These patients had unilateral hypersensitivity in 71% and bilateral in 29%. A new classification of Hypersensitive Carotid Sinus Syncope incorporating sinoatrial node (Type 1A) and atriaoventricular node (Type 1B) suppression in the Type 1 syndrome is presented. Many forms of treatment for cardioinhibitory Hypersensitive Carotid Sinus Syncope have been forthcoming but in our hands in these 89 patients over 17 years, there has been no single case of recurrence of syncope after implantation of a permanent VVI electronic cardiac pacemaker. Type 2 (vasodepressor) Hypersensitive Carotid Sinus Syncope is rare, occasionally seen combined with the cardioinhibitory (Type 1) response and it is not helped with cardiac pacing. PMID- 3850771 TI - Localization of coronary artery disease with exercise induced ST segment depression: coronary angiographic correlation. AB - Abnormalities of the 12 lead electrocardiogram (ECG) are often used to localize the anatomic site of myocardial ischemia and vessel involvement in patients (pts) with coronary artery disease. This study is to determine if ischemia of specific vascular segments can be identified by exercise induced ST segment depression (STD) on 12-lead ECG. One hundred and forty three pts with a positive treadmill stress testing (TST) who had coronary arteriography within one month of TST were reviewed. There were 114 men and 29 women, aged 34-74 years (mean 55 years). The Bruce protocol was used for TST. Significant coronary stenosis was defined as obstruction of 70% or greater of the luminal diameter. The pattern of STD on 12 lead ECG during exercise was similar in pts with single vessel disease involving the left anterior descending artery (LAD), right coronary artery (RCA) or circumflex artery (Cx). This pattern of STD in single vessel disease was also comparable to 2-vessel, 3-vessel or left main stem disease. Twenty-two percent of pts with LAD disease had isolated STD in inferior leads. Twenty-five and 29% of pts with RCA and Cx disease respectively had STD in the anterior leads alone during exercise testing. It is concluded that exercise induced STD in 12 lead ECG can not predict ischemia of specific vascular segments or specific vessel involvement. PMID- 3850772 TI - Non-invasive assessment of the Ionescu-Shiley pericardial xenograft heart valve. AB - This study was undertaken to describe the auscultatory, phonocardiographic, M mode and two-dimensional echocardiographic features of the Ionescu-Shiley prosthesis in a group of unselected subjects. Twenty-seven valves were studied - 15 aortic, 10 mitral and 2 tricuspid. An opening sound was noted by phonocardiography and auscultation from the majority of valves in the three positions. A mid-systolic murmur was heard from 14 aortic valves and two had regurgitant murmurs. Three mitral valves had apical diastolic murmurs and two of these had mitral regurgitation. Two-dimensional echocardiography provided important spatial information but M-mode allowed superior resolution of valve leaflets. Calcification was seen in one four year old aortic valve and dehiscence of the sewing ring in another leading to severe aortic regurgitation. These data indicate that an opening sound is a frequent normal feature of an Ionescu-Shiley prosthetic valve and a mid systolic murmur is normal for aortic valves. In the three valve positions, the normal M-mode pattern resembles a native aortic valve. Abnormal features which can be recognized include calcification of valve cusps and dehiscence of the sewing ring. PMID- 3850773 TI - Pathogenesis of cardiac dysfunction in diabetes mellitus. AB - The use of insulin by diabetics has largely removed the threat of death from ketotic coma but cardiovascular dysfunction remains a major cause of death in patients with diabetes. Recent research has indicated a generalized membrane defect, which may cause abnormalities of calcium metabolism in nerves, cardiac and smooth muscle as well as endothelial cells and thus may lead respectively to the development of neuropathy, primary cardiomyopathy, microangiopathy and atherosclerosis in the diabetic population. Each of these pathogenic processes, which are associated with insulin deficiency, alone or in combination with others, may result in cardiac dysfunction in chronic diabetes. Activation of the sympathetic nervous system and abnormalities in catecholamine metabolism have been identified in diabetes; their involvement in the genesis of cardiac pump failure as well as large and small vessel disease is likely. The membrane defects as indicated by changes in both plasma membrane and glycocalyx in diabetic cardiomyopathy appear to be complex and may involve alterations in the metabolism of lipids and pyrimidine nucleotides. It seems that intracellular calcium overload is intimately involved in the development of diabetic cardiomyopathy; however, a concentrated research effort is required to understand the primary biochemical lesion in the pathogenesis of cardiac dysfunction in diabetes. In the meantime, a heightened awareness on the part of clinicians concerning the susceptibility of diabetic patients to cardiovascular problems may help in reducing mortality and morbidity in the diabetic population. PMID- 3850774 TI - Myocardial ischemic injury induced by isoproterenol in the rabbit: biochemical and chemical alterations. AB - The development of a model of chronic myocardial ischemic injury (MII) in rabbits by administering increasing doses of isoproterenol (ISO) is described. Repeated s.c. injections of increasing doses of ISO (0.5 mg/kg, on day 1 to 15.5 mg/kg, on day 15) resulted in an increase in serum glucose, free fatty acids and creatine phosphokinase. Examination of hearts from ISO-treated rabbits revealed marked hypertrophy of the left ventricle and an increase in total water content. Biochemical analysis showed an increase in left ventricular hydroxyproline and a decrease in ATP and glycogen content following ISO-treatment. Ion measurements revealed extensive accumulation of Na and Ca, with the Ca being preferentially accumulated in the mitochondria. Measurement of subcellular organelle marker enzymes showed decreases in the sarcolemmal Na+-K+-stimulated (ouabain sensitive), mitochondrial (azide-sensitive) and sarcoplasmic reticulum ATPase activities in the ISO-treated animals. Analysis of lysosomal enzyme activities in myocardial homogenates showed significant decreases in the latency of N-acetyl beta-glucosaminidase and cathepsin D. The above biochemical alterations in ISO induced MII generally parallel changes previously seen in the rabbit following acute coronary artery ligation. The present model allows the study of MII uncomplicated by some uncertainties arising from the surgical or anesthetic procedures employed in acute "open-chest" preparations and would permit long-term follow-up studies of pharmacological interventions. The susceptibility of the rabbit to experimental atherosclerosis should allow the development of an experimental model of MII which more closely approximates the clinical situation. PMID- 3850775 TI - Alterations in the cardiac adenylate cyclase activity in hypothyroid rat. AB - Adenylate cyclase activity of the washed particles from the ventricles of rats made hypothyroid by propylthiouracil (P.T.U.) treatment was studied in the absence or presence of different concentrations of catecholamines, guanylimido diphosphate (GppNHp) and NaF. The washed particles preparation of hypothyroid rat displayed higher basal adenylate cyclase activity in comparison to that in the euthyroid animal. Fluoride stimulation was unaltered but GppNHp stimulation was markedly depressed over a wide range of concentrations in the hypothyroid heart washed particles. Epinephrine stimulation in the presence of GppNHp was altered only at 10(-5) to 10(-4)M concentrations. Depressed responsiveness of cardiac adenylate cyclase to GppNHp and epinephrine was also found in washed particles of thyroidectomized rats. Depression of GppNHp or epinephrine response in hypothyroid animals was reversed 48 hours after T3 administration. In contrast to the washed particulate preparation, no depressions in the responses of adenylate cyclase to GppNHp or epinephrine were seen in the purified sarcolemmal membranes from P.T.U. induced hypothyroid or thyroidectomized rat hearts. It is proposed that altered guanine nucleotide binding or altered guanine nucleotide binding protein-catalytic subunit interaction in the adenylate cyclase system may be an underlying mechanism of depressed positive inotropic action of catecholamines in the hypothyroid state. PMID- 3850776 TI - Working with radiation: reducing the risks. PMID- 3850777 TI - Radiotherapy nurse: developing a new role. PMID- 3850779 TI - Senior nurse managers: a force to be reckoned with. PMID- 3850778 TI - Depression is a feminist issue. PMID- 3850780 TI - CO2 laser surgery in cutaneous medicine. PMID- 3850781 TI - Paget's disease of bone. PMID- 3850782 TI - Family birthing: what a difference a shift makes! PMID- 3850784 TI - Nursing faculty exchange. PMID- 3850783 TI - Alternate methods of chemotherapy administration. PMID- 3850785 TI - Disaffiliation of the OIIQ. PMID- 3850786 TI - The clinical uses of monoclonal antibodies in cancer research. PMID- 3850787 TI - Attitudes of patients living in Taiwan about cancer and its treatment. PMID- 3850788 TI - Day gynecologic chemotherapy unit: an innovative approach to changing health care systems. PMID- 3850789 TI - Early detection to avert the crisis of superior vena cava syndrome. PMID- 3850790 TI - Physical and psychological effects of DES on exposed offspring. PMID- 3850791 TI - "I've seen cancer from both sides now": an oncology clinical nurse specialist shares her own cancer experience. PMID- 3850792 TI - 'Yes' to increased RN responsibility. PMID- 3850793 TI - Nursing plus the law: a professional combination. PMID- 3850794 TI - Psychiatric nurse training: more than chalk and talk. PMID- 3850795 TI - District nursing: defining a role. PMID- 3850796 TI - Welfare benefits: the bed test. PMID- 3850797 TI - Don't let your hair down. PMID- 3850798 TI - Have catheter, will travel. PMID- 3850799 TI - Conference preview: politics in its place. PMID- 3850801 TI - Immunisation: disadvantaged children. PMID- 3850800 TI - Nutrition: below the breadline. PMID- 3850802 TI - School nursing: in a class of their own? PMID- 3850803 TI - Postnatal depression: talking it out. PMID- 3850804 TI - [Transportation of patients using an elevating and transferring stretcher and a moving bed]. PMID- 3850805 TI - [Costs, a question of survival]. PMID- 3850806 TI - [Clinical Hospital for Porto Alegre]. PMID- 3850807 TI - [Prevention of decubitus ulcer with a chemical solution]. PMID- 3850808 TI - [Study of the level of contamination of the environmental air with ethylene oxide. II]. PMID- 3850809 TI - Sepsis score and complement factor B for monitoring severely septic surgical patients and for predicting their survival. AB - Sepsis score and complement factor B (FB) have been measured in 66 severely septic surgical patients in the intensive care unit, with the aim of monitoring their clinical course and predicting their outcome. Sepsis score correlated well with clinical course. 82% of patients with initial sepsis score less than 20 progressively improved and survived. Only 6% of patients with sepsis score greater than or equal to 20 survived. FB plasma level was significantly higher (p less than 0.01) in patients who subsequently survived. Two indices were identified which could predict patient outcome several days in advance with 100% accuracy: (1) the index of survival from sepsis defined as the combination of sepsis score less than 20 and FB greater than or equal to 45 mg/dl, and (2) the index of death from sepsis defined as sepsis score greater than or equal to 20 and FB less than 40 mg/dl. PMID- 3850810 TI - Penicillin-binding proteins of beta-lactam-resistant strains of Staphylococcus aureus. Effect of growth conditions. AB - Methicillin-resistant clinical isolates of Staphylococcus aureus are intrinsically resistant to beta-lactam antibiotics in that the resistance mechanism is unrelated to the possession of beta-lactamases. We have demonstrated that a new, high-molecular-mass penicillin-binding protein (PBP) is present in these strains with a low affinity for beta-lactams and that its amount is regulated by the growth conditions. The new PBP from all strains that have been examined has an identical mobility on SDS gel electrophoresis and is the only PBP still present in an uncomplexed state with beta-lactams (and therefore the only functional PBP when these strains are grown in media containing concentrations of beta-lactam antibiotics sufficient to kill sensitive strains. PMID- 3850812 TI - [Conservative treatment methods in chronic suppurative otitis media]. PMID- 3850811 TI - [Multiple pregnancy]. PMID- 3850813 TI - [Publishing activity of the World Health Organization in connection with the Program for Maternal and Child Protection]. PMID- 3850814 TI - [The fetus and drugs]. PMID- 3850815 TI - [Organization of drug addiction care]. PMID- 3850816 TI - [Method of measuring arterial pressure]. PMID- 3850817 TI - [Experience in using the history of regional surgery in a course teaching surgical diseases]. PMID- 3850818 TI - [Incipient spontaneous abortion]. PMID- 3850819 TI - [Acute diffuse glomerulonephritis]. PMID- 3850820 TI - [Genital infantilism and algomenorrhea]. PMID- 3850821 TI - [Behavioral disorders in children and adolescents with residual organic brain lesions]. PMID- 3850822 TI - [Use and estimation of the quality indices in preventing infectious diseases]. PMID- 3850823 TI - [Abrogation of a labor agreement at the request of a trade union organ]. PMID- 3850824 TI - [Cancer of the cervix uteri]. PMID- 3850825 TI - My role as a retired R.N. in a retirement village. PMID- 3850826 TI - Introducing students to gerontological nursing. PMID- 3850827 TI - [Public health and the sale of alcohol]. PMID- 3850828 TI - [Cancer kills more people in the last 20 years in developing countries. Lung cancer: 116% more in men, 200% more in women]. PMID- 3850829 TI - [AIDS: acquired immunodeficiency syndrome]. PMID- 3850830 TI - [Role and function of the nurse in the operating room]. PMID- 3850831 TI - [Nursing care planning model: elaboration and application]. PMID- 3850832 TI - Exercise is for everyone. PMID- 3850834 TI - Elderly diabetics and urine testing. PMID- 3850833 TI - The effects of age on pharmacokinetics. PMID- 3850835 TI - Nursing foot clinics fulfill a great need. PMID- 3850836 TI - Wanted: innovative nurses for long-term care. PMID- 3850837 TI - Nutrition. How to find reliable information. PMID- 3850838 TI - Can osteoporosis be treated? PMID- 3850839 TI - 70+ and going strong. A Hopi pioneer in nursing. Interview by Eileen M. Sullivan. PMID- 3850841 TI - A community health nursing career: but I want to be where the action is! PMID- 3850840 TI - Student nurses and legal accountabilities. PMID- 3850842 TI - Nurses as decision makers: ethical dimensions. PMID- 3850843 TI - Patient advocacy, ethical dilemmas and decision making: the importance of autonomy. PMID- 3850844 TI - Acknowledging the need for ethics in the nursing curriculum. PMID- 3850845 TI - An international experience. PMID- 3850846 TI - Haplotype study on C4 polymorphism in Japanese. Associations with MHC alleles, complotypes, and HLA-complement haplotypes. AB - Genetic polymorphism of the fourth component of human complement (C4) was investigated in 83 Japanese families which have been typed for HLA-A,-B,-C,-DR, C2, and BF. Four common C4A alleles and four common C4B alleles were observed. The allele frequencies estimated from unrelated parents were as follows: C4A3, 0.686; A4, 0.132; A2, 0.106; AQ0, 0.067; ARares, 0.009; C4B1, 0.587; B2, 0.167; B5, 0.088; and BQ0, 0.158. Eight different C4 haplotypes were observed with frequencies of more than 0.01. The estimated haplotype frequencies were as follows: C4A3-B1, 0.513; A4-B2, 0.114; A2-BQ0, 0.106; A3-B5, 0.088; AQ0-B1, 0.059; A3-BQ0, 0.047; A3-B2, 0.038; A4-B1, 0.015; and Rares, 0.021. Strong positive gametic associations were found in the following C4-HLA haplotypes: C4A2BQ0-A24, C4A2BQ0-Bw52, C4A3B5-Bw54, C4A3B5-Bw59, C4A4B2-Bw46, C4A3B5-Cw1, C4A2BQ0-DR2, and C4A3B5-DR4. Eleven complotypes were observed with frequencies of more than 0.01. C4A2BQ0 and C4A3B5 were exclusively associated with BFS-C2C. BFF was associated with C4A3B1. C2AT, C2B, and C2BH were associated with C4A3B1, A4B2, and C4A3B1, respectively. Eight different HLA-complement haplotypes were found to be characteristic of Japanese. These combinations are considerably different from those reported in Caucasoid populations. PMID- 3850847 TI - Intestinal absorption of labelled triiodothyronine in man. PMID- 3850848 TI - Effect of vegetable banana powder on changes induced by ulcerogenic agents in dissolved mucosubstances of gastric juice. PMID- 3850849 TI - Alterations in plasma and CSF levels of GABA, 5-HT and amino acids in fulminant hepatic failure. PMID- 3850850 TI - Free perforation of tuberculous ulcers of the small bowel. PMID- 3850851 TI - Primary biliary cirrhosis: a case report. PMID- 3850852 TI - Low protein content or ascitic fluid--a pitfall in the diagnosis of abdominal tuberculosis. PMID- 3850853 TI - "By-pass arthritis" associated with a gastro-jejuno-colic fistula. PMID- 3850855 TI - Bactericidal activity of cefotaxime and fosfomycin in cerebrospinal fluid during the treatment of rabbit meningitis experimentally induced by methicillin resistant Staphylococcus aureus. AB - The purpose of this study was to evaluate the therapeutic effect of cefotaxime (CTX) and fosfomycin (FOS), alone or in combination, in an experimental meningitis, with cerebrospinal fluid (CSF) concentrations of the two antibiotics reproducing those obtained in human CSF during bacterial meningitis. With a dose of 50 mg/kg of CTX and 100 mg/kg of FOS injected i.v. (CTX over 0.5 h and FOS over 3 h), CSF concentrations were comparable to those observed in man. In a series of five rabbits per treatment group, the bacterial population was counted before and after treatment (two doses with a six-hour interval) with CTX, FOS or CTX + FOS (CTX over 0.5 h before the end of FOS infusion). By the 12th hour of treatment, the percentage of bacteria surviving in CSF compared to the initial population was 4.35% for CTX, 0.20% for FOS and 0.19% for CTX + FOS. Thus, it seemed that CTX + FOS was not more active than FOS alone. In another series of four rabbits per group, the bactericidal effect was followed at T0, T6, T12, T24 and T48 after treatment (two doses with a six-hour with a six-hour interval). With CTX, a variable drop in bacterial count from one rabbit to the other occurred during the first 12 h, and then a bacteriostasis followed. With FOS, a quick bactericidal effect was observed during the first 12 h, becoming slower during the following 36 h (0.03% of bacteria surviving at the 48th hour). With CTX and FOS in combination, a quick bactericidal effect was achieved, remaining steady over a 48-hour period (0.001% of bacteria surviving at the 48th hour). PMID- 3850854 TI - Cefotaxime in combination with other antibiotics for the treatment of severe methicillin-resistant staphylococcal infections. AB - Methicillin-resistant staphylococci (M-R staphylococci) represent 30% of the staphylococcal strains isolated in our hospital and pose important therapeutic problems. In a preliminary in vitro checkerboard study the bactericidal effect of various cephalosporins (cephalothin, cefamandole, cefotaxime and cefoperazone) in combination with other antibiotics (netilmicin, amikacin, vancomycin and fosfomycin) was studied on ten M-R staphylococcal strains. The combinations of cefoperazone with amikacin, cephalothin with vancomycin and of the four cephalosporins with fosfomycin were synergistic on the ten strains (FBC indexes less than or equal to 0.75). According to the CSF and bone levels achieved by these antibiotics and their bactericidal concentrations in combination, the combination of cefotaxime and fosfomycin was the most interesting, a concentration of less than or equal to 2 mg/l cefotaxime being bactericidal on five homogeneous M-R Staphylococcus aureus when combined with 4 mg/l of fosfomycin. This combination of cefotaxime (25 mg/kg, i.v. infusion over 30 min) and fosfomycin (50 mg/kg, i.v. infusion over three hours) three to four times daily was used to treat 16 patients: three patients with meningitis, six with bone and joint infections and seven with persistent bacteremia. The FBC indexes were less than or equal to 0.625 for the 12 strains studied. All the patients were cured without relapses. The concentrations of cefotaxime, desacetyl cefotaxime and fosfomycin in the CSF during meningitis three hours after the end of the infusion on the second day of treatment were 8.76, 6.82 and 58.0 mg/l, respectively, for patient one and 2.0, 0.53 and 31.0 mg/l, respectively, for patient two.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3850857 TI - Alternative to i.v. filter usage. PMID- 3850856 TI - Adult respiratory distress-like syndrome during hemodialysis: relationship between activation of complement, leukopenia, and release of granulocyte elastase. AB - Twelve patients with terminal uremia (8 females and 4 males) treated with chronic maintenance hemodialysis, were extensively studied during two successive dialyses with alternate use of either a Cuprophan (CP) based membrane, or a Polycarbonate (PC) membrane. Arterial plasma levels of total hemolytic complement, complement factors C3d and C5a, and granulocyte derived elastase were determined immediately before dialysis and sequentially during the entire procedure. Effluent line from the hemodialyzer was similarly sampled. Collected samples were centrifuged immediately at the bedside and instantly frozen in liquid nitrogen in order to preserve labile plasma components of complement. Analysis of the overall results shows that initial arterial leukopenia and generation of C5a in the hemodialyzer, as well as maximal values of hemodialysis-induced free plasma C3d and granulocyte elastase are related. Reflecting differences in biocompatibility, CP membranes were shown to induce significantly more leukopenia, increase in plasma free C3d, generation of C5a, and release of granulocyte-derived elastase. These results indicate that activation of complement, leukopenia, and release of granulocyte derived elastase are interlinked pathophysiological mechanisms of importance for acute deterioration of pulmonary function during hemodialysis, and that this condition is closely related to adult respiratory distress syndrome (ARDS). PMID- 3850858 TI - The control of infection in general surgery: a four-year prospective study in Brazil. AB - On January 1, 1977 a prospective study of the control of infection was initiated in the Division of General Surgery of the Federal University of Pernambuco and continues to the present day. The results of the first four years of this study are assessed in this paper. In the period from January 1, 1977 to December 31, 1980 1,636 patients were submitted to surgery, whose operations were classified as clean, clean-contaminated, contaminated and dirty. The number of infections was studied in relation to the type of operation. Other parameters studied included etiology, bacterial sensitivity, infection related to the six surgical groups functioning in the division and to the indication for elective or emergency surgery, respiratory infection, respiratory infection related to the anesthetist who administered the general anesthesia and wound infection in relation to the surgeon who performed the operation. The overall mortality was 2.64% and the percentage of necropsies carried out was 72%. Among the fatalities, sepsis was the predominant cause of death, accounting for 41% of the cases. The authors conclude that the control of infection is fundamental to the education of the medical and paramedical community and is to be regarded as a quality control of the service provided by the division of surgery. It should also be extended to the outpatient department and be accompanied by necropsy on the majority of the patients who fail to survive the operation. PMID- 3850859 TI - A randomized study comparing a transparent polyurethane dressing to a dry gauze dressing for peripheral intravenous catheter sites. AB - We studied rates of peripheral intravenous (IV) catheter tip and insertion site colonization after randomly assigning patients to transparent polyurethane (TP) dressings (N = 316) or dry gauze (DG) dressings (N = 421). The study was conducted during both summer and fall seasons, in a facility which lacked air conditioning. All patients had a teflon plastic catheter inserted, maintained and cultured by a member of the IV therapy team; no antibiotic or antiseptic ointments were used. Colonization rates were higher in the summer than in the fall for both catheter tips (9.0% vs 3.5%, p = 0.005) and sites (21.6% vs 7.0%, p = 0.001). During the summer season, the rate of catheter tip colonization with TP dressings was nearly twice that of DG dressings (12.4% vs 6.8%, p = 0.04). Logistic regression analysis indicated that catheter tip colonization was associated with the summer season (odds ratio = 3.0, 95% CI 1.4-6.2) and TP dressings (odds ratio = 1.8, 95% CI 1.1-3.2), and that site colonization was associated with both summer (odds ratio = 4.0, 95% CI 2.2-7.1) and receipt of antibiotics (odds ratio = 1.9, 95% CI 1.1-3.2). Coagulase-negative staphylococci were isolated from 55.5% of the colonized catheter tips and insertion sites. The data suggest that bacterial colonization of peripheral IV catheters is increased in summer, and that use of TP dressings may increase both tip colonization and cost nearly twofold. PMID- 3850860 TI - Nosocomial rubella--consequences of an outbreak and efficacy of a mandatory immunization program. AB - An outbreak of rubella in a large metropolitan hospital is described. Nineteen cases among employees and three secondary cases in family members occurred. Nosocomial cases occurred among the 3,900 employees of an adult medical-surgical unit where a voluntary program of rubella immunization was in effect. No cases occurred among the 1,400 employees of the women's and pediatric units with mandatory policies, despite interfacility and community exposure. Ten pregnant women were among the 377 contacts of the cases. Five were sero-negative to rubella. Two who developed clinical rubella, one asymptomatic sero-conversion and one other, all elected to terminate their pregnancies. The remaining woman, exposed in her third trimester delivered a normal infant. We conclude a policy requiring new employees to be rubella immune is more effective in preventing nosocomial rubella than a voluntary program and is desirable in view of the potential consequences of an outbreak to pregnant employees. PMID- 3850861 TI - Ethical problems in rationing medical care. PMID- 3850863 TI - Selecting an i.v. tubing system. PMID- 3850862 TI - Francisella tularensis. AB - Francisella tularensis is an infection acquired from animals. Although the pathogen is not a cause of nosocomial infections, it is a major hazard to workers in the clinical microbiology laboratory and could easily become a problem for the infection control officer in this setting. The organism can be cultured from many sites but is difficult to recover unless the appropriate media are used. A number of clinical syndromes are caused by this pathogen. Most are characterized by an ulceration and regional lymphadenopathy. Typhoidal tularemia, however, can present as an obscure fever often complicated by pneumonia. The therapy of choice for tularemia is streptomycin although gentamicin and tobramycin are reasonable alternatives. PMID- 3850864 TI - 'Justice'. PMID- 3850865 TI - Keynote address. PMID- 3850866 TI - Women's councils. PMID- 3850867 TI - Return to Aswan: theory into practice. PMID- 3850868 TI - Nursing within the Soviet health care system. PMID- 3850869 TI - Conflicts arising from being a health professional in a management role. PMID- 3850870 TI - Caring for the health of young children. 2. Keeping children healthy. PMID- 3850871 TI - Computers in health visiting. PMID- 3850872 TI - Part of your education. PMID- 3850873 TI - Thoughts on the sudden death of Simon. PMID- 3850874 TI - Common modules within health visitor and district nurse courses in Scotland. PMID- 3850875 TI - Withdrawn, nonverbal, unresponsive? Why not give pet therapy a try? PMID- 3850876 TI - The use of temporary atrial wire electrodes to record atrial electrograms in patients who had cardiac surgery. AB - The use of temporary atrial electrodes after surgery provides the medical staff with a valuable diagnostic tool in patients who have undergone open heart surgery. Recording a unipolar or bipolar atrial EG is a simple procedure that can be performed at bedside with an ECG machine. The bipolar recording lead has specific advantages over a unipolar recording lead. The use of a bipolar recording lead simplifies the identification of the P wave during rapid tachycardias and atrioventricular dissociation. The use of unipolar and bipolar atrial EGs recorded simultaneously and sequentially can be used to identify atrial rhythm and ascertain the atrioventricular relationship. Nurses need to integrate unipolar and bipolar EGs as part of their baseline assessment. PMID- 3850877 TI - Etiology, diagnosis, and treatment of recovery room bleeding/hemorrhage. AB - A successful outcome for the patient who hemorrhages after surgery is based on the recognition of bleeding, the specific diagnosis of bleeding sites and disorders, and the management of bleeding by control measures and replacement of blood lost (Table III). The best preventative measures include careful preoperative assessment of historical and physical findings along with appropriate laboratory tests. PMID- 3850878 TI - Nursing implications in the care of the chronic hemodialysis patient in the critical care setting. PMID- 3850879 TI - The effect of an advanced cardiac life support course on advanced cardiac life support ability. AB - Thousands of health care providers spend time, money, and energy each year taking the AHA-sponsored ACLS courses, and ACLS-certified health care providers are frequently given greater job responsibility than other health care providers in the same setting. The purpose of this study was to determine the effect of an ACLS course on the ability of health care providers to perform ACLS in a simulated situation. A nonequivalent control group design was used. The sample consisted of 76 health care providers whose job responsibilities included ACLS. The Mega-Code skill station from the ACLS course was used to evaluate ACLS performance. Chi-square analyses showed a significant (p less than 0.05) difference in the posttest pass/fail results of the two groups and a significant (p less than 0.05) difference in the changes from pretest to posttest of the two groups. The research hypotheses were supported, and the researches concluded that the course had a positive effect on the subjects' ACLS ability. PMID- 3850880 TI - Acute pericardial disease. PMID- 3850881 TI - The ST segment axis: a distinguishing feature between acute pericarditis and acute myocardial infarction. PMID- 3850882 TI - A new device for the prevention of sudden death. AB - The clinical implications and use of an AICD are presented. This device is still under investigation, but has proved to be highly successful in trials to date. PMID- 3850883 TI - A study of ventricular ectopy during atrial fibrillation. PMID- 3850884 TI - Potassium imbalance in the coronary care unit. PMID- 3850885 TI - The pediatric patient: strategies for improving interactions. PMID- 3850886 TI - Establishing a research process for community health nursing agencies. PMID- 3850887 TI - Support for grieving kids. PMID- 3850888 TI - Initiating hospital-based home care. PMID- 3850889 TI - Continuing care of a total laryngectomy patient. PMID- 3850890 TI - Hospice care. Cancer pain management: converting analgesics. PMID- 3850891 TI - The legalities of home care. My patient won't follow the medical plan of treatment. What should I do to protect myself-legally? PMID- 3850892 TI - Digoxin-drug interactions. PMID- 3850894 TI - Waiting. PMID- 3850893 TI - The impact of documentation in home health care. PMID- 3850895 TI - Guilt feelings in the spouse of the terminally ill. PMID- 3850896 TI - Changes in a rural public health nursing program: a community profile. PMID- 3850897 TI - The role of the family nurse clinician in family health care. PMID- 3850898 TI - Rural home environment assessment: implications for community health nurses. PMID- 3850899 TI - Hospice care. Safe handling of cytotoxic agents in the home. PMID- 3850900 TI - Regulation of beta-D-galactoside alpha 2----3 sialyltransferase activity. The effects of detergents and lysophosphatidates. AB - Peptide maps of Form A and Form B of porcine submaxillary gland beta Gal alpha 2- --3 sialyltransferase were essentially identical, consistent with the view that the two forms are not different enzyme species but that one, the B form (Mr = 44,000) is derived from the A form (Mr = 49,000). Analysis of the sialyltransferase activity in subcellular fractions from homogenates of porcine submaxillary glands reveals that 85% of the total activity of the transferase is bound to membranes, mostly in the Golgi apparatus, and that the remainder is soluble. The relative amounts of the membrane-bound and soluble forms as well as their response to detergents suggests that they are the cellular counterparts to the A and B forms of the transferase. The activity of Form A and the membrane bound enzyme is stimulated to similar extents by various detergents. Triton-type detergents are more effective than Brij-type. Lysophosphatidylcholine is a potent stimulator of the activity of Form A but lysophosphatidylethanolamine is without effect and lysophosphatidylserine and lysophosphatidylglycerol are inhibitory. C16-18 acyl derivatives of lysophosphatidylcholine stimulate the activity more extensively than the C14 acyl derivative, and the C12 acyl derivative is without effect. In contrast, Form B is fully active in the absence of all detergents tested although it is inactivated just as Form A by lysophosphatidylglycerol and octylglucoside. Kinetic analysis of Forms A and B reveal that detergents stimulate the activity of Form A by lowering the KD and KM of CMP-NeuAc and increasing the Vmax of the reaction. Form B in contrast, which is fully active in the absence of detergents, has kinetic parameters like those of Form A in the presence of detergent. Taken together, these results suggest that Form A of the sialyltransferase, but not Form B, contains a lipid-binding domain, and that binding of detergents or lipids to the domain modulates the activity of the enzyme. PMID- 3850901 TI - Transcriptional regulation of the 3-hydroxy-3-methylglutaryl coenzyme A reductase gene in rat liver. AB - This study addresses whether transcriptional control of the 3-hydroxy-3 methylglutaryl coenzyme A reductase gene in rat liver plays a role in determining the level of reductase mRNA. Isolated rat liver nuclei were allowed to elongate nascent RNA transcripts in the presence of [alpha-32P]CTP, and radiolabeled nuclear reductase RNA was quantitated by filter hybridization. Rats fed a diet supplemented with the drugs cholestyramine and mevinolin and having 20-60-fold induced levels of reductase mRNA exhibited levels of reductase transcription which were 20-fold higher than in rats fed an unsupplemented diet. Over 90% of the transcription of the reductase gene was inhibited by concentrations of alpha amanitin which selectively inhibit RNA polymerase II. Administration of mevalonolactone (the end product of the reaction catalyzed by reductase) to rats fed cholestyramine and mevinolin caused an 80% decrease in the rate of reductase transcription by approximately 1 h. We conclude that under these conditions changes in reductase transcription are primarily responsible for the regulation of reductase mRNA levels. PMID- 3850902 TI - Autobac susceptibility testing of methicillin-resistant Staphylococcus aureus isolated in an Australian hospital. AB - Semiautomated rapid broth elution (Autobac Multi-Test System; General Diagnostics, Div. Warner-Lambert Co., Morris Plains, N.J.) and disk diffusion tests were compared with an agar dilution breakpoint method to determine the antibiotic susceptibility of 147 methicillin-resistant Staphylococcus aureus isolates from our hospital. Although the disk diffusion method, in general, correlated well with the agar dilution tests, the overall agreement of the Autobac tests with agar dilution tests was only 79%, with many very major discrepancies occurring with clindamycin (88%), gentamicin (33%), and methicillin (15%). When we used a 10-fold higher inoculum for the Autobac tests, all isolates were shown to be resistant to methicillin, but significant numbers of major and minor discrepancies occurred with chloramphenicol, fusidic acid, and neomycin. The majority of isolates were shown to belong to three biotypes, distinguishable by lactose fermentation, lipolysis, hemolysis, and pigment production. The antibiotic susceptibility profile of one biotype was found to be markedly different from those of the other biotypes and contained a high incidence of clindamycin susceptibility and neomycin, gentamicin, and kanamycin resistance. In contrast, the other two biotypes had a high incidence of clindamycin, gentamicin, and kanamycin resistance and neomycin susceptibility and accounted for most of the very major discrepancies in the clindamycin and aminoglycoside tests. In these methicillin-resistant S. aureus strains, discrepancies possibly may arise from partial expression of methicillin resistance, dissociated or inducible clindamycin resistance, and instability of gentamicin resistance. PMID- 3850903 TI - Expression of complement proteins C2 and factor B in transfected L cells. AB - Factor B and C2 are structurally and functionally similar complement proteins encoded by genes that are closely linked within the class III region of the major histocompatibility complex (MHC). In this study, restriction endonuclease digestion of cosmid DNAs isolated from an H-2d murine genomic library indicated that the chromosomal organization of these two genes was similar in mouse to that in man. To further characterize their expression, cosmid DNAs encoding human and murine factor B and C2 were introduced into mouse L cells by DNA-mediated gene transfer. Factor B expression was demonstrated in cells transfected with either the human or the murine gene, but not in cells transfected with a control plasmid. Synthesis and secretion of factor B by L cells transfected with the human and murine cosmids was similar to that of human and murine cells in primary culture. An interspecies variation between human and murine factor B was identified and reproduced with extraordinary fidelity by the mouse fibroblast. In contrast, C2 RNA and protein were expressed by L cells alone and by L cells transfected with a control plasmid, as well as by L cells transfected with cosmids encoding human and murine complement genes. Expression of the transferred human C2 gene was demonstrated by the presence of a new distinct C2 RNA transcript and secretion of biologically active human C2. These results demonstrate the similarity of organization of the murine and human class III MHC regions. Expression of the two closely linked gene products, C2 and factor B, after DNA-mediated gene transfer provides a system for further analysis of regulation in both normal and deficient states. PMID- 3850905 TI - New technology: implications for health. PMID- 3850906 TI - A programme for developing nurses' skills and nursing practice. AB - In this paper we describe a programme for developing nursing care for patients with myocardial infarction (MI) and report some results of a study in which applicability and effectiveness of this programme were evaluated. To investigate how the programme influenced nursing practice, nurses' readiness (knowledge, skills, motivation, accountability) to provide care for MI patients was followed for 2 years. Data for the evaluation were collected by questionnaires from three categories of nurses, by analysing nursing documents before and 1 and 2 years after the programme started, and by keeping a continuous diary. This programme made an impact on many variables that measure changes in nursing practice and nurses' readiness to provide care. The implications of this programme for nursing practice, research, education and administration are discussed. PMID- 3850904 TI - Suppression of murine neuroblastoma growth in vivo by mevinolin, a competitive inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A reductase. AB - 3-Hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase catalyzes the formation of mevalonate, an essential precursor for isoprenoid compounds in mammalian cells. Recent studies have shown that mevinolin, a competitive inhibitor of the reductase, inhibits cell proliferation and induces differentiation in cultured C1300 (Neuro-2A) murine neuroblastoma cells. We now report that mevinolin can inhibit neuroblastoma growth in vivo. The specific activity of HMG-CoA reductase in subcutaneous neuroblastomas increased more than 20-fold between the fifth and eighth days after tumor inoculation, and remained elevated for the remainder of the tumor lifetime in mice. The increase in reductase activity was correlated with a marked increase in tumor DNA content and exponential increase in tumor weight. Using an in vitro assay to monitor the ability of mouse serum to suppress sterol synthesis, we determined that mevinolin was inactivated or cleared from the circulation within 3-6 h after a single subcutaneous injection. However, by using subcutaneous osmotic pumps to deliver a constant infusion of mevinolin, we were able to maintain adequate blood levels of the drug for 7 d. Mevinolin (5 mg/kg per h) suppressed tumor growth (wet weight) significantly when treatment was carried out between day 1 and day 8 or between day 5 and day 12 after tumor inoculation. Histopathological examination of tumors from mevinolin-treated mice revealed few or no mitotic figures and marked cellular degeneration. Measurements of incorporation of (3H)acetate into neuroblastoma sterols and ubiquinones 24 h after implantation of osmotic pumps showed that mevinolin produced a marked inhibition of isoprenoid synthesis in the tumors in vivo. The data suggest that, in addition to their demonstrated utility as cholesterol-lowering drugs, competitive inhibitors of HMG-CoA reductase may have considerable potential as novel antineoplastic agents. PMID- 3850907 TI - The relationship between nursing theory and nursing practice. AB - During the past two decades, redefinition of many of the beliefs and assumptions which underly nursing appears to have contributed to an increasing divergence between nursing theory and nursing practice. Nurses who are theorists and educationalists, and nurses who are engaged in nursing practice tend to use different vocabularies, to have differing perceptions of patients and of nursing, and to value different kinds of nursing knowledge. Some of the divergences between nursing theory and nursing practice are considered, and suggestions made about how theory and practice might be reconciled. PMID- 3850908 TI - New areas of theory development and practice in patient education. AB - Patient education, which is central to nursing practice, is evolving as a body of theory and in its application to groups of clients. This paper outlines a new body of theory known as self-efficacy theory, which has considerable potential to improve patient outcomes from teaching. This theory posits that patient belief that he can perform a necessary behaviour (self-efficacy) can be affected by four principal sources of information: performance attainments, vicarious experience, verbal persuasion, and perceived physiological states. This paper also describes new applications of patient education for psychiatric patients and notes the potential for the expanded educational services for geriatric patients. These programmes have the potential to save hospital costs and to improve quality of life but appear to be in early stages of programme development. Active development and management of a field's theory base and practice applications is fragmented in the patient education field but important to the field's continued relevance and vigour. PMID- 3850909 TI - Nursing patients--an enjoyable task? AB - The paper describes a small study, in which the issue of patient popularity is re examined. A sample of 35 psychiatric in-patients was used. The factors demonstrated by previous authors as affecting patient popularity are reconsidered in the light of theoretical, methodological, empirical and epistemological criticisms of previous research work in this area. The issues of consistency of patient popularity, both over time and between nurse raters, are also examined. PMID- 3850910 TI - District Health Authority policy and the 'extended clinical role of the nurse' in primary health care. AB - Historical trends encouraging the extended role of the nurse in general practice are described, and Department of Health and Social Security (DHSS) policy regarding this and the legal position of the nurse, discussed. The results of a postal questionnaire to all 192 Directors of Nursing Services (DNSs) (Community) in England are presented. The study aimed to document the extent to which nursing policies at district level had been developed to meet DHSS recommendations. Although 71% of the DNSs questioned said a policy on the extended role of the nurse had been drawn up in their districts, few met all three criteria recommended by the DHSS: specific task definition, training requirements and legal safeguards. PMID- 3850911 TI - Can clients with schizophrenia describe feelings and beliefs about taking medication? AB - The medical and nursing literature suggests measurement of attitude (feelings and beliefs) of clients with schizophrenia may be possible. This paper reports a study by the author using Fishbein's expectancy-value model to measure attitude toward taking medication and reflects on significant implications of both the research reported in the literature and the author's study. How symptoms of schizophrenia affect communication, attitude toward treatment, attitude toward taking medication, and clinical implications of measuring the attitude of clients with schizophrenia toward taking medication are discussed. PMID- 3850912 TI - The use of research reports in planning continuing education for trained nurses. AB - The number of research studies carried out in the United Kingdom by nurses is now quite considerable. As a result there are a number of areas which have been studied by several researchers using different methods and study populations but producing convergent findings in which confidence can be placed. In this paper it is argued that as well as contributing to the content of the knowledge transmitted during study days such findings can be used in the planning of continuing education programmes for trained nurses. Research studies in the following areas were chosen: the consumer's view of continuing education; the ward sister's management role; teaching and learning in the ward; and clinical practice. Findings are discussed and ways in which use can be made of them in continuing education are suggested. PMID- 3850913 TI - Conceptual frameworks and the nursing curriculum. AB - In this article the author discusses the meaning of a conceptual framework in the curriculum, the advantages of a conceptual framework, the relationship of curriculum design to the conceptual framework and some types of conceptual framework used in nursing curricula. The conceptual framework in the curriculum process and the relationship of nursing theory to the conceptual framework are also discussed. This article presents some results of a survey of Australian post basic clinical nursing courses and a content analysis of curricula for these courses. Such curricula are often perceived as based on nursing theory but in reality most appear to be heavily orientated to the medical model. PMID- 3850914 TI - Present and future care of the elderly. PMID- 3850915 TI - Accent capabilities in disorientation. PMID- 3850916 TI - Is your older client ready for a role change after retirement? PMID- 3850917 TI - Tardive dyskinesia: are your older clients at risk? PMID- 3850918 TI - Meet the health care needs of older adults by using a chronic care model. PMID- 3850919 TI - Nursing diagnosis: an essential step to quality care. PMID- 3850920 TI - Tips on nutrition. PMID- 3850921 TI - Serendipity. PMID- 3850922 TI - Prevent burn injury to older adults. PMID- 3850923 TI - [Effect of kallikrein on lung metastasis of cancer cells, and its influence on platelet aggregation]. PMID- 3850924 TI - One or two low affinity penicillin-binding proteins may be responsible for the range of susceptibility of Enterococcus faecium to benzylpenicillin. AB - Three benzylpenicillin-resistant, clinical isolates of Enterococcus faecium (MIC values 16-64 micrograms ml-1) contained six penicillin-binding proteins (PBPs), of which PBP5 was the most abundant and had the lowest affinity for the antibiotic. Four benzylpenicillin-susceptible strains (MIC values 0.031-0.5 microgram ml-1) were obtained as spontaneous derivatives from these above organisms. There were significant decreases in the amounts of PBP5 in each of the derivatives, with the concomitant appearance of a new, higher affinity PBP (5*) in three strains. Increased amounts of PBP5, with no changes in PBP5*, were found in several mutants with intermediate-level benzylpenicillin-resistance (MIC values 1-8 micrograms ml-1) selected from two of the susceptible strains. Examination of 18 other clinical isolates, with a wide range of susceptibilities to benzylpenicillin (MIC values 0.062-128 micrograms ml-1), showed that PBP5* was present in 13 strains, and PBP5 in all of them, but in differing amounts. The results concerning the relative amounts and relative affinities of PBPs 5* and 5 allowed the categorization of the various strains into six groups, within which organisms had somewhat similar susceptibilities to benzylpenicillin. PMID- 3850925 TI - Ribosome biogenesis and nucleolar ultrastructure in neuronal and oligodendroglial rat brain cells. AB - The absolute amounts of precursor to ribosomal RNA (pre-rRNA) and ribosomal RNA (rRNA) in isolated rat brain neuronal and oligodendroglial nuclei were determined. The amount of the major pre-rRNA and rRNA species in neuronal nuclei was about twofold higher than in oligodendroglial nuclei. The relative rate of pre-rRNA synthesis in vivo was 2.3- to 2.7-fold higher in neuronal as compared with oligodendroglial nuclei. This corresponds to a 2.7-fold higher activity of the "template-bound" RNA polymerase I in isolated neuronal nuclei, whereas the activity of the "free" enzyme in both neuronal and glial nuclei was almost identical. The higher transcription rates of rRNA genes correlated with the markedly more prominent fibrillar component in neuronal nucleoli. The turnover times of the major pre-rRNA and rRNA species in neuronal and oligodendroglial nuclei were similar, except for 45S pre-rRNA, which turned over at an approximately 1.5-fold slower rate in neuronal nuclei. The relative rates of processing of pre-rRNA and of nucleocytoplasmic transport of rRNA in neuronal cells were approximately 2.7-fold higher than in oligodendroglial cells and corresponded to the differences in rRNA gene transcription rates. The established ribosome formation features correlated with an abundant (neurons) or exceedingly scarce (oligodendrocytes) nucleolar granular component. The turnover rate of cytoplasmic ribosomes in rat brain neurons was twofold slower than in oligodendrocytes, largely because of the about fivefold higher amount of ribosomes in the cytoplasm of neurons. We conclude that ribosome formation and turnover in neuronal and oligodendroglial cells are adapted to the protein synthetic levels in these two types of brain cells. PMID- 3850926 TI - The widespread influence of olfaction. AB - The full importance of olfaction has received minimal attention until recently renewed interest reveals that it becomes necessary not only for protection but also for digestion, memory, emotions, motor skills, and sexual performance. By reviewing the interrelationship of olfactory anatomical structures with the brain, examining precipitating factors contributing to olfactory disorders and recognizing the resulting pathophysiological conditions, nursing can contribute to future research by documenting systemic assessments which pay particular attention to the history of olfactory dysfunction. PMID- 3850927 TI - Nonatherosclerotic carotid occlusive disease--a guide to patient education. AB - Nonatherosclerotic occlusive disease--narrowing of the carotid lumen without atherosclerosis--describes an uncommon but known group of angiographic defects. This phrase includes the entities: fibromuscular disease, moyamoya syndrome, arterial dissection, and extracranial carotid aneurysms. Although nursing care of these patients is often the same as for those patients with atherosclerotic occlusive disease, there is a dearth of information available in nursing literature for use in patient education. This article will present definitions, symptoms (which may be the same as for those patients with atherosclerotic occlusive disease), treatment, and prognosis to aid the development of patient teaching plans. PMID- 3850928 TI - Extracranial-intracranial bypass surgery. AB - Although the indications and effectiveness of the operation remain controversial, extracranial-intracranial (EC-IC) bypass surgery has become a common method in the treatment of patients with cerebral vascular disease. The technical feasibility of the procedure and its low mortality and morbidity rates are well established. However, its usefulness remains unproven in a variety of clinical, angiographic and regional cerebral blood flow patterns. This discussion focuses on the purpose of EC-IC bypass surgery as well as the procedure itself and postoperative nursing care. PMID- 3850929 TI - Injury to the brachial plexus. AB - Trauma to the brachial plexus may have unfortunate physical, psychological, and social effects. Because this nerve network provides motor and sensory innervation to the arm and hand, an injury may result in functional impairment with concomitant loss in confidence and self-image. It is important for nurses to understand the properties of peripheral nerves and to appreciate the ramifications of injuries to these nerves. PMID- 3850930 TI - Amenorrhea-galactorrhea syndrome in the prolactin-secreting pituitary tumor: nursing implications. AB - The amenorrhea-galactorrhea syndrome in prolactin-secreting pituitary tumors is described. The role of prolactin in the development of amenorrhea and galactorrhea is discussed along with the other endocrine abnormalities that overproduction of prolactin may cause. The diagnostic tests that are commonly performed to identify this disease entity are presented with reference to the nurse's role in preparing patients for the diagnostic work-up. Recent advances in transsphenoidal surgery, radiotherapy, and the use of Bromocriptine as therapeutic modalities for this disorder are described. Nursing guidelines that accompany planning care for patients undergoing these treatment regimes are provided. PMID- 3850931 TI - Toward a more objective approach to pupil assessment. AB - The findings of an investigational study comparing a hand held tongue depressor pupil gauge with a printed millimeter scale sheet are the focus of this article. A historical perspective of the development of various millimeter measurement scales and devices is included as well as a brief overview of the anatomy and physiology of the oculomotor (III) cranial nerve. The results of the study provide support for the use of millimeter scales as an effective means of measurement of pupil size. Increased reliability with the use of a hand held tongue depressor pupil gauge is demonstrated. Implications for nursing practice are summarized. PMID- 3850932 TI - A quick and easy guide to neurological assessment. AB - A quick and easy guide with step-by-step pictorial descriptions has been developed for use as a uniform approach to neurological assessment by the nurse. It is the packaging of the information and the visual aids that may be useful, educational tools for nurses in performing a systematic assessment of the patient. PMID- 3850933 TI - Neuroscience nursing elective for senior nursing students. AB - In response to baccalaureate student requests for additional clinical experience and expanded opportunities in neurological and neurosurgical nursing, an experimental course was designed for the winter session semester in cooperation with a local teaching hospital. A three-credit elective, "Discovering Neuroscience Nursing," was offered to senior students for five weeks. The course included thirty hours of lecture and laboratory, field trips, and over 200 hours of clinical experience. A student stipend was provided by the hospital. Goals for the course centered on providing an opportunity for the student to gain competence and confidence in caring for patients with neurological dysfunctions and providing family support. Students were assigned staff nurse preceptors as they rotated to every clinical setting caring for patients with alterations to the nervous system. Evaluations from students and staff preceptors indicated the successful acceptance of the program which will be modified and continued as a senior elective. PMID- 3850934 TI - The documentation dilemma. A practical solution. AB - Few nursing divisions can withstand the continuation of practices known to be ineffective and costly, and of questioned benefit. Our hospital's critical survey of policies and procedures regarding nursing documentation has resulted in significant cost savings and improvement in satisfaction and quality. PMID- 3850935 TI - Evaluating and selecting a computer software package. PMID- 3850936 TI - Power. Conflicting views. AB - This study on power is the first of its kind reported in the nursing literature. We now know that the term "power" has significantly different meanings for nurses. The basic differences found between nurse executives and head and charge nurses with respect to their views on power is a timely finding. Before generalizations and interventions can be definitively suggested, more studies must be done. Nurses interested in participating in this effort should contact the author. The issue of unification of nurses is important. More exploration in the area of power will bring us closer to mobilizing our potential and strength. Nurse executives will be more successful in accomplishing their organizational goals with a united personnel group. The discrepancy in power beliefs identified in this article will create the stimulus for further discussion and reflection. PMID- 3850937 TI - Endings in mentor relationships. PMID- 3850939 TI - Alternative revenue sources for nursing departments. PMID- 3850938 TI - Who burns out? PMID- 3850940 TI - Nurse-midwifery management of preeclampsia. Two case studies. PMID- 3850941 TI - Midwifery management of second stage of labor. PMID- 3850942 TI - Task analysis. PMID- 3850943 TI - Common sense glossary of medical-legal terms. PMID- 3850944 TI - Recertification in nurse-midwifery. A critical analysis of use of a written examination. PMID- 3850945 TI - Hepatitis B. The nurse-midwife's role in management and prevention. PMID- 3850946 TI - Reducing low birth weight among socioeconomically high-risk adolescent pregnancies. Successful intervention with certified nurse-midwife-managed care and a multidisciplinary team. PMID- 3850947 TI - Hypertensive disorders in pregnancy. PMID- 3850948 TI - Genetic Screening. PMID- 3850949 TI - Infant nutrition and supplements. AB - Today, American consumers believe they need more and better nutrients than their diets provide. Consequently, consumers spend approximately three billion dollars each year on vitamin and nutrition products. Vitamin and/or mineral supplements are relatively inexpensive and available without a prescription; therefore, it is understandable that they are used by a substantial portion of the population. However, the last 50 years have witnessed a steadily increasing understanding of vitamins and trace mineral biochemistry and its role in human nutrition and intermediary metabolism. It has not been shown conclusively that normal breastfed infants of well nourished mothers need any specific vitamin and mineral supplements, with the exception of iron and fluoride. The use of vitamin D supplements remains controversial. Preterm infants may require supplements of vitamin E, iron, and folic acid because of their rapid rate of growth and less complete, intestinal absorption. PMID- 3850950 TI - Vaginal birth after cesarean. AB - Recent studies prompted by the high cesarean birth rates have looked at the issue of vaginal birth after cesarean. The risk of attempting a vaginal birth after cesarean appears to be minimal for selected clients. As more and more obstetricians begin to offer vaginal birth after cesarean to their patients, nurses will need to be fully informed about this option. A review of the pertinent literature relating to vaginal birth after cesarean and nursing implications are presented. PMID- 3850951 TI - Infant-feeding practices. Mothers' decision making. AB - Fifty-one primarily low-income, single, black mothers completed a questionnaire. More than one-half of the sample population reported that decisions about infant feeding were made by the end of the first trimester. Almost one-third of the mothers decided to breastfeed. Of that group, one-half supplemented breastfeeding with formula. More than one-half of the sample reported that external factors influenced their final decisions about infant feeding. More than one-half of the sample population reported that a nurse never discussed infant feeding with them. The role of nursing in infant-feeding decisions and patient teaching needs to be reevaluated. PMID- 3850952 TI - Adolescent mothers. Self-perceived health education needs. AB - Sixty-six primiparous adolescent mothers, aged 14 to 18 years, were asked to identify what they felt they needed to know about caring for themselves and their infant during the first six weeks postpartum. Data were collected by a structured questionnaire. Responses were classified according to four categories: infant medical needs, mother-infant psychosocial needs, maternal physical needs, and daily physical infant care. Analysis of overall questionnaire responses shows that care of infant is of primary concern to young mothers in the postpartum period. PMID- 3850953 TI - Squatting in childbirth. A new look at an old tradition. AB - The evidence supporting upright positions in childbirth and concerns about squatting are reviewed. Squatting techniques and how to adapt them to the traditional birth setting are explained, and the role of attitude on the part of childbirth educators and birth attendants in making the squatting position practically available for women in childbirth is emphasized. Recommendations are made for future research. PMID- 3850955 TI - The ombudsman--every unit should have one. PMID- 3850954 TI - Early sibling attachment. AB - A sample of 30 predominantly three- and four-year-old siblings were videotaped during their first meeting with a new sibling at the time of the mother's discharge from the hospital. The first five minutes of interaction were divided into 20, 15-second intervals, and each interval was coded for the presence or absence of 28 behaviors believed to be related to the early attachment process. The exploration behaviors of siblings showed considerable uniformity. The sibling's age, sex, or participation in sibling preparation classes produced no marked differences in behavior. Recommendations are made for further research. PMID- 3850956 TI - Living on the edge. PMID- 3850957 TI - Extracorporeal shock wave lithotripsy. PMID- 3850958 TI - One nurse's experience. The development of CAPD dialysable dolls. PMID- 3850960 TI - Spiritual care. A time to weep. PMID- 3850959 TI - Monitoring the heart's performance. PMID- 3850961 TI - Spiritual care. A time to laugh. PMID- 3850962 TI - Living & learning. E.R. One nurse's struggle with problem patients--and self righteousness. PMID- 3850963 TI - Masks matter. How nurses' attitudes helped--and hurt--my recovery. PMID- 3850964 TI - Confronting the right to die. Caught between a patient's will and a doctor's order. PMID- 3850965 TI - Intramuscular treatment of subclinical staphylococcal mastitis in lactating cows with penicillin G, methicillin and their esters. AB - The relationship between antibiotic milk concentrations and bacteriological efficacy was investigated in groups of lactating cows with subclinical mastitis due to either penicillin G-sensitive or penicillin G-resistant Staphylococcus aureus. Treatments consisted of the intramuscular injection of procaine penicillin G, or its weak base ester penethamate hydriodide, and sodium methicillin, or its weak base ester tamethicillin. Antibiotics were administered once daily for 2 or 4 days at accepted dosages. After four daily, treatments with procaine penicillin G and penethamate hydriodide, infections were eliminated from 56.5% and 68.8%, respectively, of quarters infected with penicillin G-sensitive staphylococci, and from 14.3% and 7.7%, respectively, of quarters infected with penicillin G-resistant staphylococci. After four daily treatments with sodium methicillin and tamethicillin, infections were eliminated from 32.4% and 48.6%, respectively, of quarters infected with penicillin G-resistant staphylococci. The better efficacy of penethamate hydriodide and tamethicillin was considered to be linked to the higher milk drug concentrations obtained with these drugs as opposed to the lower concentrations measured in the milk after treatment with the parent drugs. Cure rates were generally higher after treatment for 4 days than after the 2-day course of therapy. Treatment efficacy decreased progressively with increasing age of the cows. Intramuscular treatment of subclinical staphylococcal mastitis in lactating cows can serve as a useful model for screening existing and new antibacterial agents and drug products intended for the parenteral treatment of clinical staphylococcal mastitis. PMID- 3850966 TI - [On patient education at discharge: case studies]. PMID- 3850967 TI - [Preparation of a pamphlet for patient education at discharge and the practice of instruction]. PMID- 3850968 TI - [Patient education to promote independent activities of patients: through regional continued nursing]. PMID- 3850969 TI - [Effects of education of families caring for apoplexy patients following hospital discharge: effects on prevention of recurrence and maintenance of ADL]. PMID- 3850970 TI - [Patient education to ease the apprehension of patients following discharge: preparation of a booklet and a guide for education]. PMID- 3850971 TI - [Reflection on the experience in home nursing in the past year: an approach by the Musashino Red Cross Hospital and their future prospect]. PMID- 3850973 TI - [Report from the hospice. 9. Death at home]. PMID- 3850972 TI - [Home nursing. 18. Home nursing of a patient in the terminal stage of cancer: on the possibility of terminal care at home]. PMID- 3850974 TI - [Use of non-narcotic analgesics. (1) Aspirin]. PMID- 3850975 TI - [Clinical description of dementia. 5. Symptoms of dementia (4)]. PMID- 3850976 TI - [Medical care in the changing society: toward the 21st century. 6. The intermediate care]. PMID- 3850977 TI - [Counseling of patients. 8. Counseling methods: discussion with a patient with unfavorable prognosis of his condition. 5]. PMID- 3850978 TI - [Profile of a nurse. Ms. Kazue Yajima who acquired experience both as a nurse and as an inpatient in India]. PMID- 3850980 TI - [Nursing in Indonesia. (2)]. PMID- 3850979 TI - [Positive attitude toward recovery. Diary of a cancer patient. 9. Support of his family as a vital element in recovery]. PMID- 3850981 TI - [Report from the First International Congress on AIDS held at Atlanta: the American society threatened by sexually transmitted disease numbering more than 25]. PMID- 3850982 TI - [Advantages and disadvantages of primary nursing to patients]. PMID- 3850983 TI - [Home care: practice of long-awaited home nursing]. PMID- 3850984 TI - [Re-evaluation of information collected for patient education following discharge]. PMID- 3850985 TI - [Analysis of apprehension of patients with repeated hospitalization concerning therapy and daily activities following discharge: a follow-up survey after discharge]. PMID- 3850986 TI - [Extension of the role of nursing and the future of ambulatory nursing]. PMID- 3850987 TI - [Personnel allocation in ambulatory nursing]. PMID- 3850988 TI - [Education in outpatient nursing in in-hospital training]. PMID- 3850989 TI - [Evaluation of outpatient nursing--in the pediatric outpatient service]. PMID- 3850990 TI - [Division of the outpatient care service and changing trends in ambulatory nursing]. PMID- 3850991 TI - [Outpatient nursing in the comprehensive health service]. PMID- 3850992 TI - [Practical nursing capability expected in outpatient nursing in the future]. PMID- 3850993 TI - [Maintenance of the continuity of nursing information]. PMID- 3850994 TI - [Ambulatory nursing of patients with heart diseases]. PMID- 3850995 TI - [Patient education by nursing staff at the respiratory care service for outpatient]. PMID- 3850996 TI - [Ambulatory management of diabetics at the department of internal medicine]. PMID- 3850997 TI - [Comprehensive care of hemophilia patients--the current status and development of a hemophilia center]. PMID- 3850998 TI - [Superiority of home care proven by a clinical experience]. PMID- 3850999 TI - [Education of patients with cystitis]. PMID- 3851000 TI - [Criteria for continued ambulatory nursing in the department of neurosurgery- ambulatory nursing to reinforce cooperation among outpatient care, the hospital ward, and the area population]. PMID- 3851001 TI - [Management of asthmatic children and regional health promoting activities]. PMID- 3851002 TI - [Midwifery practice at an outpatient obstetrical department--on the MOT (midwife obstetrician tie-up) system]. PMID- 3851003 TI - [Nursing care expected by patients--experiences at a home care counseling service]. PMID- 3851004 TI - [Suggestions for outpatient nursing]. PMID- 3851005 TI - [Trends in outpatient nursing in the United States--activities of nurse practitioners in ambulatory care]. PMID- 3851006 TI - [Achievements on an organization of asthmatic patients (Koyokai) in the past year]. PMID- 3851008 TI - [Current trends in the treatment of bladder cancer]. PMID- 3851007 TI - [Focal points in modern medicine. 23. Attention to ocular health. Discussion]. PMID- 3851009 TI - [Surgical treatment of bladder cancer--indications for various surgical modalities and their clinical outcomes]. PMID- 3851010 TI - [Pre and postoperative nursing of patients with bladder cancer. Management of patients undergoing urinary diversion for social rehabilitation]. PMID- 3851011 TI - [Pre and postoperative nursing of patients with bladder cancer: a nursing standard for patients having ileal conduits]. PMID- 3851012 TI - [Pre- and postoperative nursing of patients with bladder cancer. Site marking for urostomy]. PMID- 3851013 TI - [Pre and postoperative nursing of patients with bladder cancer. Social rehabilitation and problems in daily lives of patients with ileal conduits]. PMID- 3851014 TI - [Pre and postoperative nursing of patients with bladder cancer. Assistance to patients with ileal conduits for eventual self care]. PMID- 3851015 TI - [Pre and postoperative nursing of patients with bladder cancer. Postoperative care of patients having ureterostomy--assistance given at our hospital toward patients' self care]. PMID- 3851016 TI - [Pre and postoperative nursing of patients with bladder cancer. Need for continued nursing of patients with urostomy--a clinical case with a complex family background]. PMID- 3851017 TI - [Pre and postoperative nursing of patients with bladder cancer. Nursing of a patient with bladder cancer complicated with hypertension and sequelae of stroke]. PMID- 3851018 TI - [Pre and postoperative nursing of patients with bladder cancer. Nursing of a patient with transcutaneous urostomy--a reflection on nursing actions and family cooperation for rehabilitation of a 79-year-old woman who had never been ill]. PMID- 3851020 TI - [Pre and postoperative nursing of patients with bladder cancer. Nursing of a patient in the terminal stage of bladder cancer with poor prognosis]. PMID- 3851019 TI - [Pre and postoperative nursing of patients with bladder cancer. Prevention of pyelonephritis following transcutaneous urostomy]. PMID- 3851021 TI - [Pre and postoperative nursing of patients with bladder cancer. A study of the apprehension of the patient having an ileal conduit and associated nursing interventions]. PMID- 3851022 TI - [A new method for treating nasal allergy]. PMID- 3851024 TI - [Current diagnosis and treatment of severe head injuries]. PMID- 3851023 TI - [Immunotherapy of habitual abortion]. PMID- 3851025 TI - [Fluid infusions in newborn infants]. PMID- 3851026 TI - [Fluid infusion and associated nursing actions at the newborn intensive care unit]. PMID- 3851027 TI - [Nursing of a patient with ovarian cancer associated with ascites and pleural effusion]. PMID- 3851028 TI - [Care of urostomy. 8. The ileal, ileocecal, and colonic conduits]. PMID- 3851029 TI - [The 2d European Symposium on Education of Diabetic Patients. Active listening- how do we confirm the validity of the information we collect from the patient?]. PMID- 3851030 TI - [Report on a Hawaiian nursing seminar. 5. The primary nursing system--its observation in the United States]. PMID- 3851031 TI - [The current mission of public health nurses: revised administration policies and the present local problems]. PMID- 3851033 TI - [Consolidation and closing of public health clinics in Shizuoka Prefecture]. PMID- 3851032 TI - [Conditions concerning public health nursing and the future problems]. PMID- 3851034 TI - [Activities of an organization for promotion of maternal and child health at Okayama City: organized activities for health promotion]. PMID- 3851035 TI - [Education of instructors of maternal health care: health education on maternal health care]. PMID- 3851036 TI - [Housing problems and health]. PMID- 3851037 TI - [Health examinations and public health nursing activities]. PMID- 3851039 TI - [Approach to the problem of tuberculosis]. PMID- 3851038 TI - [Care of patients with refractory diseases]. PMID- 3851041 TI - [New prospects]. PMID- 3851040 TI - [Structural adaptations of the guinea pig diaphragm to elastase-induced emphysema]. PMID- 3851042 TI - [Fetal death]. PMID- 3851043 TI - [Go ye, unto all the world...!. Interview by Sirkka Aberg]. PMID- 3851044 TI - [Getting acquainted with the 'kangaroo' treatment at Hammersmith Hospital]. PMID- 3851045 TI - [Every year is women's year]. PMID- 3851046 TI - [A verb and my life: reach out]. PMID- 3851047 TI - [From "The Best of Image": research related to stress]. PMID- 3851048 TI - [Nursing diagnosis]. PMID- 3851050 TI - [Community care in England: social service in Southwark Borough]. PMID- 3851049 TI - [Study tour of U.S. visiting nursing service. (1)]. PMID- 3851051 TI - [Psychiatric nursing. Nursing in open wards]. PMID- 3851052 TI - [President's address at year's beginning]. PMID- 3851053 TI - [Psychiatric nursing. Nursing of alcoholic patients]. PMID- 3851054 TI - [Psychiatric nursing. A direction in ambulatory nursing in cooperation with the ward]. PMID- 3851055 TI - [Psychiatric nursing. Learning from psychiatric patients]. PMID- 3851056 TI - [Psychiatric nursing. Team approach and care]. PMID- 3851057 TI - [Health workers devoted to their work at the sacrifice of their private lives]. PMID- 3851058 TI - [Psychiatric nursing. Nursing records at the psychiatric department]. PMID- 3851059 TI - [Psychiatric nursing--past, present and future]. PMID- 3851060 TI - [Teaching poetry at nursing school--for better imagination. 15]. PMID- 3851062 TI - [Medical topics: neuropeptide Y/osteomalacia]. PMID- 3851061 TI - [Spotlight: Kiyoko Miwa, director of nursing, rehabilitation center for patients with severe brain damage due to traffic accidents]. PMID- 3851063 TI - [Translation from "The Best of Image". Ethnoscience: A promising research approach to improve nursing practice]. PMID- 3851064 TI - [Nursing in USSR--invited by Medical Workers Union of USSR]. PMID- 3851065 TI - [Activities of the Research and Development Department and of the International Department]. PMID- 3851067 TI - [Seminar in basic nursing education. Learning experience and the seminar]. PMID- 3851066 TI - [Seminar in basic nursing education. Method, objective and evaluation of seminar]. PMID- 3851068 TI - [Seminar in basic nursing education. Round table discussion]. PMID- 3851069 TI - [Seminar in basic nursing education. Seminar as an effective method of learning]. PMID- 3851070 TI - [Seminar in basic nursing education. Seminar as the core of education]. PMID- 3851071 TI - [Visiting nursing service in USA. 2]. PMID- 3851073 TI - [Verbs and our life: resist]. PMID- 3851072 TI - [Nursing diagnosis (10)]. PMID- 3851074 TI - [Teaching poetry at nursing school: for better imagination training. 16]. PMID- 3851075 TI - [Medical topics: pelvic pain syndrome/burn anergy]. PMID- 3851076 TI - Ethical deliberations in nursing: a dynamic process. PMID- 3851077 TI - Ethical decision-making in everyday nursing practice. PMID- 3851079 TI - Grey matter. PMID- 3851078 TI - Integrating ethics in the nursing curriculum. PMID- 3851080 TI - In support of certification for nurse education. PMID- 3851081 TI - Farmer's lung: know the symptoms before it's too late. PMID- 3851082 TI - [Nosocomial infections: recognition, prevention, control]. PMID- 3851083 TI - [What is the hygiene nurse's task? To make the invisible visible]. PMID- 3851084 TI - [Tips from practice: how does one organize the tasks of the hygiene nurse?]. PMID- 3851085 TI - [The task of central sterilization in the service of asepsis]. PMID- 3851086 TI - [Hygiene measures in the operating room. The prevention of postoperative infections]. PMID- 3851087 TI - [Hospital hygiene at the bedside. Prevention and control of urinary tract infections]. PMID- 3851089 TI - [After the Montebello process: work documentation (1). Professional identity and role of the nurse]. PMID- 3851088 TI - [Student meeting: information exchange and mutual experience]. PMID- 3851090 TI - [Hospital hygiene: report from epidemiology and nursing technics. Assessment, improvement and adaptation of preventive measures]. PMID- 3851091 TI - [Hospital hygiene. Our skin as seen under the microscope. The patient is the principle carrier of germs]. PMID- 3851092 TI - [Prevention of infection. The preoperative hygienic preparation of the skin]. PMID- 3851093 TI - [Infectious and phlebitic reactions with the Venflon catheter]. PMID- 3851094 TI - [A place of encounters and exchanges. ICN Congress]. PMID- 3851095 TI - [Amnesty International at the ICN Congress: arousing thoughts]. PMID- 3851096 TI - Diagnosing boredom, confusion, and adaptation in school children. AB - An instrument was developed to determine if middle-school children could be diagnosed as being in a bored, confused, or adaptive state of mind. Boredom and confusion were viewed as maladaptive states. Reliability was demonstrated for the boredom, confusion, and adaptation subscales. Indications of validity were obtained for the three subscales. Boredom, confusion, and adaptation subscale scores were correlated with standardized achievement test scores and with teacher grades in academic subject areas for 136 sixth and seventh grade students. Confusion scores correlated significantly and negatively with eight of nine standardized achievement test scores, and with two of four teacher grades in academic subject areas. All correlations obtained were in the expected directions. Implications for interventions, especially in the diagnosis of confusion, are discussed. PMID- 3851098 TI - Exercise science and health enhancement: a curriculum imperative in professional preparation. AB - Exercise as a strategy to maintain and promote health continues to gain prominence because of increasing public participation in exercise programs and a growing body of literature supporting its efficacy. This paper addresses the need for including exercise science in the formal training of the health educator by 1) summarizing research concerning the effectiveness of exercise in health maintenance and enhancement, 2) presenting a rationale for including exercise science in the health educator's professional preparation curriculum, and 3) providing an outline for the course. PMID- 3851097 TI - Occupational stress in special education: a challenge for school health professionals. AB - Results of this study support the hypothesis that the majority of special educators, their support personnel, and general education administrators do not experience more job dissatisfaction than comparable occupational groups. However, they do report lower levels of subjective well-being when compared with normal populations. Furthermore, 18% of the educators in the study perceived themselves as failing to cope with their job, experienced more frequent symptoms of poor physical health, and reported significantly poorer subjective well-being. Health promotion programs for public school personnel should initiate prevention oriented health education programs for all employees. For those identified as more vulnerable to stress-related mental and physical health problems, therapeutic approaches may be necessary. However, self-help and mutual support groups may offer both groups a social support system to help meet human needs in addition to offering the potential for reducing perceived occupational stress. School health personnel may be in the best position to influence policies, procedures, and practices in schools that would support the work-related needs of all employees. PMID- 3851099 TI - School absence among children with chronic illness. AB - This paper reports school attendance for 336 chronically ill, Medicaid-eligible children living in rural areas of northern Florida. Demographic data were obtained by a questionnaire administered in a home interview. Attendance data were collected directly from the schools. The mean number of days absent the previous year was 16.9; the mean percentage of days absent was 9.4%. Regression analysis indicated that lower education level of parents and the child's inability to participate in physical activities were significant in predicting days missed from school. No individual diagnostic category was predictive of school absence. Thus, the chronicity of an illness and its impact on the child may be a more significant influence on school attendance than the actual diagnosis of the illness. PMID- 3851101 TI - Questionnaire research into health-related behavior in the United Kingdom. AB - Health Education is concerned with more than medical health. It embraces the social context of the individual and is inseparable from personal and social development. A questionnaire developed in the United Kingdom to obtain health related behavior profiles has been completed by 45,000 young people. The results are being used by schools to aid internal curriculum development, and they constitute an extensive data bank for further research. Cross-cultural use of the instrument may foster profitable exchanges of information both at the school and research levels. PMID- 3851100 TI - High school students' long-term retention of sex education information. AB - Ninth grade students in a rural South Carolina school were pretested about sexuality information, completed a 12-unit reproductive health course in eight months, and were posttested. A control group received the same pretest and posttest. Both groups were retested after the 10th and 11th grades and mean scores were calculated and compared. The difference between the experimental group's pretest and posttest mean scores was 8.49 (p less than .001); the difference between the control group's pretest and posttest mean scores was 1.0 (p = .003). The experimental group's mean score remained at least 5.2 points higher (p less than .001) than the control group's score on the same test one and two years after the course. Comparison of the mean gain between the pretest and posttest scores, and between the pretest and fourth test scores, confirmed the results obtained by mean test scores. The test scores indicated that the knowledge of the experimental students increased significantly and was sustained for two years. Their scores remained significantly higher than those of the control group on the posttest, and on tests one and two years later. PMID- 3851102 TI - Helping the young stroke victim. AB - Cerebrovascular accidents, or strokes, are a major source of disability; some 500,000 new cases are diagnosed annually. Though the number of young stroke victims is small, the cost in medical expenses and human suffering can be staggering. Causes of stroke are explained and information concerning survival rates, recovery, and rehabilitation is presented. Contributions to the integration and acceptance of the young stroke survivor by administrators, counselors, students, teachers, and school nurses are examined. PMID- 3851103 TI - Two years in a federal government role: reflections of a school health educator. PMID- 3851104 TI - Results of the School Health Education Evaluation. PMID- 3851105 TI - The role of school health. PMID- 3851106 TI - Thoughts from the School Health Education Evaluation advisory panel. PMID- 3851107 TI - Selecting and recruiting health programs for the School Health Education Evaluation. AB - The School Health Curriculum Project (SHCP) and three promising health education approaches, Project Prevention, 3 Rs and High Blood Pressure (HBP), and Health Education Curriculum Guide, were the curricula used in the School Health Education Evaluation (SHEE) project. This paper contains program descriptions of each, and a brief description of the process that led to their selection. Inclusion of the School Health Curriculum Project (SHCP) was mandated by the use of government funds to support the SHEE. The three alternative curricula, Project Prevention, 3 Rs and High Blood Pressure, and Health Education Curriculum Guide, were selected on the basis of a protocol devised jointly by contractors, government project officers, and the project advisory panel. PMID- 3851109 TI - School Health Education Evaluation. The impact of instructional experience and the effects of cumulative instruction. AB - Two substudies were conducted within the School Health Education Evaluation (SHEE) to assess implementation practices and cumulative effects. In both studies, special samples were identified that permitted independent analysis of contributing factors. For the implementation study, teachers who had taught only one year were assessed in their second year to determine what changes they made during implementation and how those changes were related to classroom performance. Teachers taught significantly fewer hours, fewer components of the curriculum, and made more changes. However, the classroom performance, compared with the first year, improved for both knowledge and attitude with a marginal trend toward improvement in self-reported practices. These results suggest that teachers became both more efficient and effective in the second iteration. The cumulative effects study tracked children through different levels of exposure to health instruction across two consecutive grade levels. Using partial classrooms as the unit of analysis, the results revealed that for knowledge, attitudes, and self-reported practices, exposure to two units of School Health Curriculum Project (SHCP) were more effective than one which was, in turn, more effective than no exposure. Analysis of self-reported smoking practices indicated cumulative program effectiveness in reducing both current smoking and future intent to smoke. PMID- 3851108 TI - Development and application of the student test used in the School Health Education Evaluation. AB - To accurately assess the health knowledge, attitudes, and practices of students in grades four-seven, the staff of the School Health Education Evaluation (SHEE) project devoted extensive effort to identify a test appropriate for such assessment. An extensive literature review failed to produce an instrument sufficiently comprehensive or psychometrically sound that could be employed. In this paper, the philosophic orientation and the detailed processes followed in developing a noncurriculum specific, psychometrically sound evaluation instrument for use in the study is described. Included are the bases for the test framework, test objective development, test item review, the various measures constructed using the test blueprint, student performance on the test battery, the psychometric qualities of the test, and suggestions for appropriate use of the final test in other school health education settings. PMID- 3851110 TI - School Health Education Evaluation. Implication of results: factors for success. AB - The four-year evaluation study summarized in this issue brings new evidence and directions for more successful health education programs. Two major factors for success stand out. The implementation of the program requires administrative support to assure adequate teacher preparation, and, fidelity to the curriculum must be maintained. The authors will describe these factors. PMID- 3851111 TI - Comprehensive school health education: a practical definition. AB - This article identifies 10 essential elements of comprehensiveness related to school health education that have been agreed upon by key personnel long involved in one or more of the four school health curriculum programs studied in the School Health Education Evaluation (SHEE) study. Each element is briefly described and followed with one or two examples of practical applications selected from the four curricula. The authors further concur with the concept that a Consumer Reports type of reporting of school health curriculum models might be useful in further SHEE data analysis and that the "elements of comprehensiveness" concept might be a valuable adjunct to such reporting. PMID- 3851112 TI - School Health Education Evaluation. Methodological and substantive significance. AB - As two of the consultants on the team that advised on design and execution of the School Health Education Evaluation (SHEE), the authors offer retrospective comments on the accomplishments and significance of the study. Comments are divided into three parts. First, the authors point out why many evaluators would argue a priori that the design of the study would not be feasible. Second, the authors discuss why the study did work and what makes it exemplary. Finally, the authors point out the several substantive findings of the study that have broad significance in education beyond health education alone. PMID- 3851113 TI - Pharmacological study of antithrombotic action of abietic acid. PMID- 3851115 TI - Some personal views on enhancing the efficacy of acupuncture. PMID- 3851114 TI - Cardiac arrhythmia. PMID- 3851116 TI - A talk on the depth of needling. PMID- 3851117 TI - Chishao (radix paeoniae rubra) in treatment of pigmented purpuric lichenoid dermatitis. PMID- 3851118 TI - Clinical observation of the weight-reducing effect of ear acupuncture in 350 cases of obesity. PMID- 3851119 TI - The radiation of the He-Ne laser on acupoints in treatment of infantile chronic diarrhea in 93 cases. PMID- 3851120 TI - Treatment of fracture of the shaft of femur by combined traditional and western methods. PMID- 3851121 TI - Studies of qingyangshen (root of Cynanchum otophyllum). I. Effect of qingyangshen on copper and zinc metabolism. PMID- 3851123 TI - Protecting your interests. PMID- 3851122 TI - Influence of balsam pear (the fruit of Momordica charantia L.) on blood sugar level. PMID- 3851124 TI - The end of a fine innings. Interview by Alison Dunn. PMID- 3851125 TI - Unity for change. PMID- 3851126 TI - Nursing in a nuclear world. PMID- 3851127 TI - Scenes from nursing life: accident and emergency. PMID- 3851128 TI - Council matters. PMID- 3851129 TI - Care on contract. PMID- 3851130 TI - Development and testing of a scale to measure locus of control prior to and following childbirth. PMID- 3851131 TI - Infants who survive necrotizing enterocolitis. PMID- 3851132 TI - A chronically ill child's progression through the separation-individuation process. PMID- 3851133 TI - In vitro antimicrobial susceptibilities of oxacillin-resistant coagulase negative staphylococci. AB - Minimum inhibitory (broth microdilution) and bactericidal concentrations determined on 101 oxacillin-resistant coagulase-negative staphylococci against netilmicin, oxacillin, vancomycin, Lauricidin and minoxidil. All isolates were susceptible to vancomycin. Netilmicin was the next most active agent, inhibiting 90% of the strains at 8 mcg/ml. PMID- 3851134 TI - What to treat: anxiety or depression? PMID- 3851135 TI - Prenatal diagnosis of 45, X/46, XY. PMID- 3851136 TI - Recent advances in the early diagnosis of osteoporosis: a review. PMID- 3851137 TI - Smoking: the number one health problem. PMID- 3851138 TI - [Chronic osteomyelitis]. PMID- 3851139 TI - [Salmonellosis]. PMID- 3851140 TI - [Erythemotherapy]. PMID- 3851141 TI - [Candidiasis]. PMID- 3851142 TI - [Thermographic study method in surgery]. PMID- 3851143 TI - [The mind and health]. PMID- 3851144 TI - [Use of an illuminated guide in intubations]. PMID- 3851145 TI - [Characteristics of the labor of the medical worker]. PMID- 3851146 TI - [Ideological and educational work with paramedical and junior medical workers in a hospital]. PMID- 3851147 TI - [Prevention of viral hepatitis B in outpatient operative dentistry]. PMID- 3851148 TI - [Rehabilitation of sick children]. PMID- 3851149 TI - [Senile cataract and its treatment]. PMID- 3851150 TI - [Vitiligo]. PMID- 3851151 TI - [Gooseflesh]. PMID- 3851152 TI - [Hazardous situations in the life of children]. PMID- 3851153 TI - [Disorders of the patency in the area of the duodenojejunal junction]. PMID- 3851154 TI - [Relationships of the nurse in the neurology department with patients and their relatives]. PMID- 3851155 TI - [Scalenus anticus syndrome]. PMID- 3851156 TI - Health promotion: can the nursing profession influence policies? PMID- 3851157 TI - The scope and practice of parent counselling. Part II. PMID- 3851158 TI - Stress incontinence. PMID- 3851159 TI - Health foods. PMID- 3851160 TI - Stoma care. PMID- 3851161 TI - Preparing teenagers for parenthood. PMID- 3851162 TI - Teenage dilemma. PMID- 3851163 TI - Repeat sequence families derived from mammalian tRNA genes. AB - Short interspersed repetitive DNA sequences (SINEs) are the major component of dispersed repetitive DNA in all mammalian genomes. Most SINEs contain an intragenic RNA polymerase III promoter that initiates transcription at the 5' end of the repeated DNA sequence and which has been proposed to facilitate the transposition and amplification of these sequences by an RNA-intermediate mechanism. We have discovered several SINE families in the prosimian Galago crassicaudatus which have promoter regions similar to transfer RNA genes. To determine the relationship between Galago SINEs and mammalian tRNA genes, we have compared their sequences. Here, we demonstrate that the Galago monomer and type II SINE families are 68 and 62% homologous, respectively, with a human methionine tRNA gene. We have extended our analysis to include the rat identifier and mouse B2 families and show that their sequences are closely related to alanine and serine tRNA genes, respectively. Our observations suggest that many mammalian SINE families are amplified tRNA pseudogenes. PMID- 3851164 TI - [Indications for exchange transfusion in newborn infants]. PMID- 3851165 TI - Why primary nursing? PMID- 3851166 TI - Packing a punch! Female nurses and the effective use of power. PMID- 3851167 TI - Essential skills for grads: how do the views of faculty and administration differ? PMID- 3851168 TI - Turning crisis into success. PMID- 3851169 TI - Nurses need to communicate regularly with their legislators about key health legislation. PMID- 3851170 TI - Big can be beautiful. An opportunity in the fitness field. PMID- 3851171 TI - Handling stress in the workplace. PMID- 3851172 TI - Surveying nursing's history. PMID- 3851173 TI - Members angry about closure of home. College supports nurses seeking to be rehoused. PMID- 3851174 TI - Royal College of Nursing. Gain goodwill; moving on. PMID- 3851175 TI - Key role in the pediatric ward sister. PMID- 3851176 TI - Save essential homes. PMID- 3851177 TI - Welcome but inadequate cash to fight AIDS. PMID- 3851178 TI - Spotlight on A and E nursing. PMID- 3851180 TI - Caring for children. PMID- 3851179 TI - Royal College of Nursing. Public effort. PMID- 3851181 TI - Residents of Ambridge provide good model of the community. PMID- 3851182 TI - Royal College of Nursing. Facing facts. PMID- 3851183 TI - Avoid the budget book mentality. PMID- 3851184 TI - Building a nationwide community pediatric nursing service. PMID- 3851185 TI - Practitioners of nursing not medicine. PMID- 3851186 TI - Are we managing to please? PMID- 3851187 TI - Royal College of Nursing. Common cause. PMID- 3851188 TI - A delicate equation. PMID- 3851190 TI - Listen to public's view on health cuts. PMID- 3851189 TI - Changing challenges facing paediatric oncology nurses. PMID- 3851191 TI - Royal College of Nursing. Immunity; applications. PMID- 3851192 TI - Hartlepool endeavours. PMID- 3851193 TI - Nursing structures. PMID- 3851194 TI - Health policy and nursing curricula--a natural fit. PMID- 3851195 TI - Taking the guesswork out of choosing textbooks. PMID- 3851196 TI - Faculty evaluation: our shackle or parachute? PMID- 3851197 TI - Reaping the professional rewards of faculty evaluation. PMID- 3851198 TI - Research utilization: what's it all about? PMID- 3851199 TI - Diverse issues call for decisive action. PMID- 3851200 TI - Our toughest questions--ethical quandaries in high tech nursing. PMID- 3851201 TI - Policy for practice: pronouncement of death. PMID- 3851202 TI - When a student's client commits suicide. PMID- 3851203 TI - Calling in a nursing consultant to calm the waves of change. PMID- 3851205 TI - Speak for yourself. PMID- 3851204 TI - Nursing education update: computer technology. PMID- 3851206 TI - Helping the helpless. The abused child. PMID- 3851207 TI - Final arrangements. What you should know about living wills. PMID- 3851208 TI - Assessing the bladder. PMID- 3851210 TI - Honoring the personal side of chronic illness. Nursing grand rounds. PMID- 3851209 TI - Home is where the care is. PMID- 3851211 TI - Unlocking the mysteries behind the chest wall. PMID- 3851212 TI - How good a nurse are you? PMID- 3851213 TI - Rumors. The truth is, this article will help you separate fact from fiction. PMID- 3851214 TI - Helping Peter face the dark. PMID- 3851215 TI - Your patient is dying. How much should you tell him? PMID- 3851216 TI - Shirley was the one bad apple on our unit. PMID- 3851217 TI - Avoiding legal risks in the O.R. PMID- 3851218 TI - What our readers said about the doctor who wouldn't deliver a baby. PMID- 3851219 TI - Beating frustrations... before they beat you. A personal approach. PMID- 3851220 TI - Using emergency drugs correctly. Part II. PMID- 3851221 TI - Teaching your patient about blood glucose testing. PMID- 3851222 TI - Nursing life's guide to hidden hazards on the job. Part III: Radiation. PMID- 3851224 TI - Performing an arterial puncture for blood gas analysis. PMID- 3851223 TI - Arterial blood gases made simple. PMID- 3851225 TI - When legal problems loom... years after the fact. PMID- 3851226 TI - Court case. An error in judgment? Did sending a patient to the lab unassisted mean this nurse was negligent? PMID- 3851227 TI - Re-inventing the hospital. PMID- 3851228 TI - Chemical dependency in our ranks: managing a nurse in crisis. PMID- 3851229 TI - Detecting communication problems. PMID- 3851230 TI - Organizing for primary care in obstetrics. PMID- 3851231 TI - Informed consent: must ethical responsibility conflict with professional conduct? PMID- 3851232 TI - Choosing products: an in-house test of three types of intravenous clamps. PMID- 3851233 TI - Adaptability: a mobile nursing unit in-house. PMID- 3851234 TI - Coping with ineffective subordinates. PMID- 3851235 TI - Relatives sue for putting patient on life-support. PMID- 3851236 TI - Career dissatisfaction. PMID- 3851237 TI - A comparison study of coronary artery disease in employed women and housewives. PMID- 3851238 TI - Substance use among women in the workplace. PMID- 3851239 TI - Specific areas of concern for the female jogger. PMID- 3851241 TI - To have a healthy baby--don't ... PMID- 3851242 TI - Guidelines for exercise during pregnancy. PMID- 3851240 TI - Osteoporosis: a self-care check list for women. PMID- 3851243 TI - A descriptive study on working women's knowledge about midlife menopause and health care practices. PMID- 3851244 TI - Breast models: a useful tool for instruction. PMID- 3851245 TI - Developing research skills in occupational health nursing: where to begin? PMID- 3851246 TI - Health: a purchasable commodity. PMID- 3851248 TI - Mentorship in occupational health nursing. PMID- 3851247 TI - Health promotion beliefs and practices of a sample of occupational health nurses. PMID- 3851249 TI - Preventing back injuries: an application of the nursing research process. PMID- 3851250 TI - Sodium in drinking water: implications for occupational health nurses. PMID- 3851251 TI - Colorectal cancer screening in the workplace. PMID- 3851253 TI - The consultation role of the psychiatric nurse clinician: from general health care to the industrial setting. PMID- 3851252 TI - The agricultural worker: occupational health's neglected client. PMID- 3851254 TI - Nurses helping nurses. PMID- 3851255 TI - Non-nursing bachelor of science gets the third degree. PMID- 3851256 TI - Nurse entrepreneur: a breed apart? PMID- 3851257 TI - Standards of community health nursing: application in practice. PMID- 3851259 TI - [Computers in nursing--information]. PMID- 3851258 TI - Through the magnifying glass: a look at ANA convention action on entry into practice. PMID- 3851260 TI - [Stoma care. 2]. PMID- 3851261 TI - [Nursing as a test of strength of humaneness]. PMID- 3851262 TI - [Introductory address for the 6th Austrian Nursing Congress]. PMID- 3851263 TI - [Nursing care in homes for the aged and departments for chronic disease]. PMID- 3851264 TI - [Wanting to help and having to economize--reductions in personnel and business budget and their effects on patients and nursing care (from the nurse's viewpoint]. PMID- 3851265 TI - [Wanting to help and having to economize--reductions in personnel and business budget and their effects on nursing care (from the hospital administrator's viewpoint)]. PMID- 3851266 TI - Pay equity/comparable worth: an update of public sector activities. PMID- 3851267 TI - Nursing education in 1985--an update. PMID- 3851268 TI - My name is Tom, I am an alcoholic and addict. PMID- 3851269 TI - Preliminary survey--female admissions to drug and alcohol services--Commonwealth of Pennsylvania. PMID- 3851270 TI - Functional abilities following limb-salvage procedures. PMID- 3851271 TI - Psychosocial support for the person experiencing cancer. PMID- 3851273 TI - Multiple myeloma. PMID- 3851272 TI - Alterations in comfort: pain related to cancer. PMID- 3851274 TI - [Effect of kallikrein on the development of the general adaptation syndrome]. PMID- 3851275 TI - Effective communication strategies for pediatric practice. PMID- 3851276 TI - A national survey assessing pediatric preventive behaviors. PMID- 3851278 TI - Nursing care of the critically ill child: a seven-point check. PMID- 3851277 TI - Preventive dentistry for children. PMID- 3851279 TI - Comparing care by parent and traditional nursing units. PMID- 3851280 TI - Pediatric management problems (Opsoclonus). PMID- 3851281 TI - Research design strategies. Will nursing intervention enhance bonding in a selected group of new mothers? PMID- 3851282 TI - Drug management of otitis media. PMID- 3851283 TI - Position statement on voluntary specialized accreditation. PMID- 3851285 TI - Test services for practical/vocational nursing programs 1985-86. PMID- 3851284 TI - Test services for registered nursing programs 1985-86. PMID- 3851286 TI - Costing out nursing: pricing our product. PMID- 3851287 TI - The variable nursing charge system at the Hospital of Saint Raphael. PMID- 3851288 TI - The development of a cost allocation statistic for nursing. PMID- 3851289 TI - Costing out nursing in nursing homes. PMID- 3851290 TI - The Omaha system: implications for costing community health nursing. PMID- 3851291 TI - Nursing services: costing, pricing, and variable billing. PMID- 3851292 TI - Psychiatric nursing training and change in perception of mental patient. PMID- 3851293 TI - Management and productivity in nursing. "Man creates, man destroys". PMID- 3851294 TI - How do we give quality nursing care in this age of modern technology. PMID- 3851295 TI - Hydrocephalus. PMID- 3851296 TI - Courtesy at work. PMID- 3851297 TI - Development of the child. PMID- 3851298 TI - Role of the psychiatric nurse in psychiatry. PMID- 3851299 TI - Case-study--management of a pre-term baby. PMID- 3851300 TI - Anaemia in pregnancy. PMID- 3851302 TI - Terminal care at home. PMID- 3851301 TI - Changing trends in the management of diabetes mellitus. PMID- 3851303 TI - Nurses' contribution to child health. PMID- 3851304 TI - Crime and mental illness. PMID- 3851305 TI - Noncompliance may be an appropriate diagnosis. PMID- 3851307 TI - An uneasy alliance: nursing and the women's movement. PMID- 3851306 TI - Nursing entrepreneurs: a success story. PMID- 3851308 TI - Written informed consent: closing the door to clinical research. PMID- 3851309 TI - Another look at informed consent. PMID- 3851310 TI - Self-care in a high-rise for seniors. PMID- 3851311 TI - Using dramatization to train caregivers for the elderly. PMID- 3851312 TI - Legal responsibilities of public health nurses. PMID- 3851313 TI - Stillbirth: death before life. PMID- 3851314 TI - AIDS and succour. PMID- 3851315 TI - Computers: only connect. PMID- 3851316 TI - A high sheriff on home ground. Interview by Laurence Dopson. PMID- 3851317 TI - Press-ganged into passivity? PMID- 3851318 TI - Jack: a study in anguish. PMID- 3851319 TI - The education debate: common knowledge. Interview by Margaret Green. PMID- 3851320 TI - Working abroad: I want to work in Canada. PMID- 3851321 TI - Make the dressing fit the wound. PMID- 3851322 TI - Cosmic nursing: first step into the unknown. PMID- 3851323 TI - Budgeting for beginners: how to check overspending. PMID- 3851324 TI - On the move. Six. Keeping an eye on mum. PMID- 3851325 TI - Backchat. Time to think. PMID- 3851326 TI - Job forum. PMID- 3851327 TI - Job forum. Opportunity knocks. PMID- 3851328 TI - Job forum. Adding up the scores. PMID- 3851330 TI - Is pay a local issue? PMID- 3851329 TI - Alternative medicines: unnatural justice? PMID- 3851331 TI - Child abuse: for the children's sake. PMID- 3851332 TI - Time to teach the teachers. PMID- 3851333 TI - Teach yourself goal setting. PMID- 3851334 TI - A revolution in urology? PMID- 3851335 TI - Education: on course for failure? PMID- 3851336 TI - Children are special. PMID- 3851337 TI - Cause for complaint: signs of neglect. PMID- 3851338 TI - Cause for complaint: lessons learned. PMID- 3851339 TI - A game of patients. PMID- 3851340 TI - The Act translated. PMID- 3851341 TI - 'I'm normal,' I cried. PMID- 3851342 TI - Where have all the nurses gone? PMID- 3851343 TI - Pay: when some are more equal. PMID- 3851344 TI - Primary health care: politics first? PMID- 3851345 TI - Where are the British models? PMID- 3851346 TI - A slow process? PMID- 3851347 TI - Jay walking in the community. PMID- 3851348 TI - Dry eye syndrome. PMID- 3851349 TI - Sights that are set too high. PMID- 3851351 TI - Burford Nursing Development Unit. Therapeutic massage. PMID- 3851350 TI - Burford Nursing Development Unit Newsletter. PMID- 3851352 TI - Burford Nursing Development Unit. Self-medication. PMID- 3851353 TI - Which tasks can a community nurse take over? PMID- 3851354 TI - Meeting midwives midway. PMID- 3851355 TI - Backchat. Too many nurses? PMID- 3851356 TI - Portrait of the health visitor. PMID- 3851357 TI - Health visiting. A family affair? PMID- 3851358 TI - Health visiting. Training for a crisis. PMID- 3851359 TI - Health visiting. Start right with every bite. PMID- 3851360 TI - Confidence boosters. PMID- 3851361 TI - Tea with Mrs Jones. Interview by Pauline Chudley. PMID- 3851363 TI - The community debate. Jill of all trades? PMID- 3851362 TI - Hayhoe hits the highspots. PMID- 3851364 TI - The community debate. A severe test of seamanship. PMID- 3851365 TI - The community debate. Why the weeds have taken over. Interview by Laurence Dopson. PMID- 3851366 TI - The community debate. When practice is not perfect. PMID- 3851367 TI - Behaviour therapy nursing. New wine in old bottles. PMID- 3851368 TI - Holistic health. Body maps. PMID- 3851369 TI - On the move--four. The community revolt. PMID- 3851370 TI - Accident and emergency. Dressing down the discomfort. PMID- 3851371 TI - Management. Transatlantic strategy. PMID- 3851373 TI - Backchat. Hired help. PMID- 3851372 TI - The midwife's management of the third stage of labour. PMID- 3851374 TI - Nurse politics--American style. PMID- 3851375 TI - Nursing politics. Friends in high places. PMID- 3851376 TI - Child health. Good news week. PMID- 3851377 TI - Cancer: bridging the gap. PMID- 3851378 TI - One for all or all for one? PMID- 3851379 TI - Your move, nurse. PMID- 3851380 TI - Management: nursing time on disk. PMID- 3851381 TI - Observations of the postoperative patient. PMID- 3851382 TI - Sharing the sadness. PMID- 3851383 TI - Counselling: learning to listen. PMID- 3851384 TI - Management. The magnet factor. PMID- 3851385 TI - On the move. Five. A place with time for people. PMID- 3851386 TI - Models and theories. The interface system. PMID- 3851388 TI - Backchat: mutton dressed as lamb? PMID- 3851387 TI - Tracheostomy care. PMID- 3851389 TI - Symposium on computers in nursing. PMID- 3851390 TI - Screen design of a hospital information system. AB - As the use of computerized Medical Information Systems becomes more commonplace and more extensive, the significance of screen design also becomes more important. User acceptance, which will bridge the gap between man and the machine, and increased productivity is dependent on ease of use, clarity, and meaningfulness. This can be accomplished through careful screen design. The role of the nurse is to become familiar with this technology and to use the skills of nursing combined with good screen design to establish user friendly formats. This can be done by working in a vendor development environment, a hospital data processing department, or by working as a functional user in developing software packages for patient populations. Nurses who familiarize themselves with screen design technology are in key positions to contribute to increased staff productivity via system acceptance and maximum utilization. PMID- 3851391 TI - Space nursing. A professional challenge. AB - The challenge is to have man living and working in a permanently based space station. Nursing is on the threshold of expanding the health care role to man's adaptation in outer space. Elements of man's physiologic and psychologic responses are involved in determining the most productive use of man and machines in the space environment. Curricular considerations for a career in space nursing are being explored. The projection of possibilities for practice of space nursing can produce effective contributions toward health care maintenance of the space station personnel. The challenge for nursing is to become a collaborating team participant in the exploration of living and working in space. PMID- 3851392 TI - Management information systems and the role of the nurse vendor. AB - Nurse vendors have the ability and motivation to respond to market imperatives faster than most health care institutions. Vendors can contribute important knowledge to nursing literature about the consultant-expert vendor-client relationship and the expectations of both. PMID- 3851394 TI - The job search and information systems opportunities for nurses. AB - It is important to continually upgrade your skills and goals, examine career options, and be flexible. This is an ideal point in the growth of health care information systems for nurses to consider before becoming actively involved. The future of our industry will be total health care systems expanding far beyond hospitals. There is and will be a greater need to provide information for decision making in the vast areas of alternative delivery, preventative medicine, industrial and occupational medicine, and the adult long-term care market. Large, non-health care corporations and business coalitions will have a strong influence on our industry. Terminals will be set up in the workplace for early detection of disease and to provide wellness programs. Due to severe financial pressures, we will finally be forced to use our technology for medical research and to provide access to national data bases to provide better health care and allow for prevention, early detection, and a faster cure of some diseases. The nurse consultant will play a major role in this area. This evolution will happen only over time. As many mergers take place among the major health care vendors, we can only wonder what this does to our industry. As larger consolidated corporations sort their priorities, entrepreneurs will have the ideal opportunity to use their creative ability to provide products and services to the industry. The survivors will be those firms and institutions providing the best and most flexible service at a competitive price. What is important in this market is the people. They must be global thinkers with an understanding of the present and future of the health care market. They must be managers who are flexible and able to creatively use resources and technology. In both a profit and nonprofit environment, these leaders will be required to be risk takers, decision makers, and operate in a proactive manner. They will need to be entreprenurial and be open to joint venturing. The health care systems industry will only gain in importance in the next 4 years and will be nothing less than dynamic. PMID- 3851393 TI - Role of a systems consultant during the implementation of a patient care system. AB - These are just a few examples of areas where systems consultants and nurses can work closely together in designing and implementing a patient care system. Implementation of a patient care system will require careful examination of most nursing policies and procedures. The consultant's depth and range of experience is greatly enhanced by the nurse's understanding of the patient care environment and of day-to-day activities. By adhering to a carefully planned and controlled implementation process, they can combine their skills and strengths to ensure the successful implementation of a new patient care system. PMID- 3851395 TI - Using nursing expertise for non-nursing computer systems. AB - The nurse working with automated systems often uses the same practical and clinical skills used in the analysis, implementation, and evaluation of patient care. Transferring those cognitive skills from a clinical setting to a setting in which automated systems are the primary focus is practical, yet challenging. The intuitive processes of analysis, implementation, and evaluation are the same; however, the methods, procedures, and tools vary. The additional skills required to become a systems analyst, technical writer, information specialist, project officer, or consultant can be learned either formally by attending courses, seminars, workshops, or other educational programs or by on-the-job experience with the many aspects of systems implementation. Whenever possible, opportunities for learning should be sought by the nurse to develop her analytical and technical skills, depending on the nature of the role she fills in working with automated systems. Experience with non-nursing technology provides the nurse with a deeper understanding and appreciation of the applications of computer technology in a variety of settings. This kind of knowledge contributes to her ability to more accurately assess the capabilities desirable in automated health care system, with particular emphasis on nursing requirements. The combination of nursing, technical, and analytical skills places the nurse working with automated systems in a position to greatly expand her knowledge base and to identify mechanisms to transfer non-nursing technology to automation in nursing practice, education, and research. The challenge to the nursing profession will continue as automation continues to become an integral part of health care delivery.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3851396 TI - Education. Can we see the wood for the trees? PMID- 3851397 TI - The silent majority. PMID- 3851398 TI - Clinical. Take a deep breath. PMID- 3851399 TI - John's story. Hyperbaric oxygenation. Interview by Karen Montague. PMID- 3851400 TI - Finance. 2. Home ownership. PMID- 3851401 TI - What's in a name? PMID- 3851402 TI - Attitudes and influence. PMID- 3851403 TI - Health education. Meeting the need. PMID- 3851405 TI - Child abuse: the A&E nurse's role. PMID- 3851404 TI - Mental handicap. Where silence is not golden. PMID- 3851406 TI - Practice. Open all hours. PMID- 3851407 TI - Floating on air. PMID- 3851408 TI - Dressing fungating wounds. PMID- 3851409 TI - Pressure for change. PMID- 3851411 TI - Medical Express sets the pace. PMID- 3851410 TI - Terminological inexactitudes. PMID- 3851412 TI - Finance. 3. Provision for retirement. PMID- 3851413 TI - Pharmacology. Foxglove therapy. PMID- 3851414 TI - Psychiatry. Blow for independence. PMID- 3851415 TI - Education. Challenging the status quo. Interview by Martin Vousden. PMID- 3851416 TI - Community. Midwifery in the real world. PMID- 3851417 TI - Health education. Hysterectomy counselling. PMID- 3851419 TI - Health Visitors Association special. Facing the facts. PMID- 3851418 TI - Health Visitors Association special. Looking to the future. PMID- 3851420 TI - Health Visitors Association special. Therapeutic dolls. PMID- 3851421 TI - Health Visitors Association special. Going into Europe. PMID- 3851422 TI - Health Visitors Association special. What do children eat? PMID- 3851423 TI - Dear Sir John... PMID- 3851424 TI - Finance. Insurance protection. PMID- 3851425 TI - Health education: fair to middling. PMID- 3851426 TI - Ash Wednesday. PMID- 3851427 TI - Enthusiasm is the key. PMID- 3851428 TI - Research. Stuck in an educational rut. PMID- 3851429 TI - The confidence to educate? PMID- 3851430 TI - Communication breakdown. PMID- 3851431 TI - Nursing Mirror theater nurses' supplement. The battle for supremacy. PMID- 3851432 TI - Nursing Mirror theater nurses' supplement. Taking the strain. PMID- 3851433 TI - Nursing Mirror theater nurses' supplement. Constructive criticism. PMID- 3851434 TI - Five-star treatment. PMID- 3851435 TI - A & E nursing: sudden death. PMID- 3851436 TI - Griffiths update: a climate of fear. PMID- 3851437 TI - Diabetic control in adolescents. PMID- 3851438 TI - Finance: savings and investment. PMID- 3851439 TI - Education: the importance of awareness. PMID- 3851440 TI - Crisis in care: the most stressful specialty. PMID- 3851441 TI - Health education: how much do you drink? PMID- 3851442 TI - Midwifery: birth of a maternity unit. PMID- 3851443 TI - Shelter or suffering? PMID- 3851444 TI - A major hurdle. PMID- 3851445 TI - A vocational progression. Interview by Patrice Gaffaney. PMID- 3851446 TI - Weight gain and adjuvant chemotherapy. PMID- 3851447 TI - The development and validation of an oncology patient classification system. PMID- 3851448 TI - A study of the oncology nurse role in ambulatory care. PMID- 3851449 TI - The challenge of hypercalcemia in cancer. PMID- 3851450 TI - A cancer nursing assessment tool. PMID- 3851451 TI - A psychological model of adjustment in gynecologic cancer patients. PMID- 3851452 TI - Extravasation of doxorubicin from a Hickman catheter: a case presentation. PMID- 3851453 TI - Third-party reimbursement: status of legislation. PMID- 3851455 TI - Qualitative methods in community analysis. PMID- 3851454 TI - Selecting a method to measure dietary intake. PMID- 3851456 TI - Levels of public health. PMID- 3851457 TI - Public health nursing in primary care: impact on home visits. PMID- 3851458 TI - American nurses on safari: an illustration of coping with cultural complexity. PMID- 3851459 TI - Nurse-patient interaction in the home setting. PMID- 3851460 TI - Single-step purification of "kallikrein-resistant" kininogen from rat plasma using monoclonal-antibody immunoaffinity chromatography. AB - Monoclonal antibody to rat plasma kininogen, obtained after immunization of mice with the kininogen prepared by conventional methods, was purified from ascites fluid and coupled to CNBr-activated Sepharose-4B. Monoclonal-antibody affinity adsorbant thus prepared provided a rapid single-step method of purifying to homogeneity plasma kininogen. Purified rat plasma kininogen showed identical molecular weight and immunological cross-reactivity to rat plasma low molecular weight (LMW) kininogen purified by conventional procedures. Rat plasma kininogen differed from LMW kininogen from other species by virtue of its resistance to cleavage by either plasma or glandular kallikreins. PMID- 3851461 TI - [Cancer of the corpus uteri]. PMID- 3851462 TI - [Function of the charge nurse]. PMID- 3851463 TI - [Arterial hypertension and obesity]. PMID- 3851464 TI - [How much does health cost. 4. An analysis of treatment costs and alternatives]. PMID- 3851465 TI - [Social aspects of strokes]. PMID- 3851466 TI - [Why should things be improved?]. PMID- 3851467 TI - [All of my Mokotow. Interview by Iwona Krysiak]. PMID- 3851468 TI - [Girl Scout]. PMID- 3851470 TI - [Measurement of work time in a hospital medical service]. PMID- 3851471 TI - [Administration nursing staff]. PMID- 3851469 TI - [Uterine contractile function]. PMID- 3851472 TI - Infant with a congenital defect: crisis for the family. PMID- 3851473 TI - Perioperative nursing roles for the aesthetic surgical patient. PMID- 3851474 TI - Success with lipoplasty as an outpatient procedure. PMID- 3851476 TI - When R.N.'s assessment and M.D.'s diagnosis differ. PMID- 3851475 TI - [The Sceptor system: relation of results from antibiograms in diffusion agar to MIC]. AB - The Sceptor system and the susceptibility of Gram-positive cocci and Gram negative rods to several antibiotics were presented. The accuracy of methicillin and gentamicin MIC of Staphylococcus aureus was determined. The MIC of methicillin-resistant strain was less than 8 mg/l. Finally the MIC accuracy to 29 Pseudomonas aeruginosa strains was compared with the results obtained by the standard disk diffusion method. PMID- 3851477 TI - Legal case briefs for nurses. KS: anesthesia without orders or supervision. NY: nurse sues patient: Dead Man's Statute. PMID- 3851478 TI - Chaos in the O.R. - CNRA: "Res Ipsa" doctrine. Case in point. Morgan v. Children's Hospital (480 N.E. 2d 464 - OH). PMID- 3851479 TI - [Popular use of medicinal plants in infancy]. PMID- 3851480 TI - [Influence of nutrition on age at menarche]. PMID- 3851482 TI - [Causes of emotional stress on nurses assisting critically ill children]. PMID- 3851481 TI - [Nursing care of patients with current behavior manifestations of obsessive compulsive symptoms]. PMID- 3851483 TI - [Opinions of nursing students about various sexual practices]. PMID- 3851484 TI - [Preparation of nurses for supervision in health centers]. PMID- 3851485 TI - [Interactions between nurses and parents of hospitalized children]. PMID- 3851486 TI - [The female genital system (1). Uterus, vagina, clinical examination]. PMID- 3851487 TI - [Materials and technic. The perfusion pump (1)]. PMID- 3851488 TI - [Hemocultures in intensive care]. PMID- 3851489 TI - [Cytobacteriologic examination of urine]. PMID- 3851490 TI - [Determination of the minimal inhibitory concentration and of the minimal bactericidal concentration. Bacteriostatic and bactericidal strength of serum]. PMID- 3851491 TI - [Systematic bacteriologic tests in intensive care]. PMID- 3851492 TI - [Interpretation of spirometry measurements and of insufflation pressure]. PMID- 3851493 TI - [Bronchial and alveolar toilet of patients with artificial respiration. General principles]. PMID- 3851494 TI - [Liquifaction of bronchial secretions]. PMID- 3851495 TI - [Postural exercise therapy for ventilated patients]. PMID- 3851496 TI - [Infectious complications of cannulas]. PMID- 3851497 TI - [The risk of infection in medical intensive care]. PMID- 3851498 TI - [The risk of infection for health care personnel]. PMID- 3851500 TI - [Water-electrolyte balance. An example of computer use]. PMID- 3851499 TI - [The shower-stretcher. A bathing technic for patients hospitalised in intensive care]. PMID- 3851502 TI - [Weaning from mechanical ventilation]. PMID- 3851501 TI - [Pleural drainage]. PMID- 3851503 TI - [Training of student nurses in intensive care]. PMID- 3851504 TI - [Interpretation of an electrocardiogram in intensive care]. PMID- 3851505 TI - [Sampling technics in virologic diagnosis. Isolation of the virus and measurement of antiviral antibodies]. PMID- 3851506 TI - [Being a nurse in the school milieu]. PMID- 3851507 TI - [Aspects of tuberculosis in France]. PMID- 3851508 TI - [Technic. Implantable port for perfusions]. PMID- 3851509 TI - [Sterility of tubal origin]. PMID- 3851510 TI - [Polyglobulia]. PMID- 3851512 TI - [Food (II)]. PMID- 3851511 TI - Antileukoprotease in patients with maxillary sinusitis. AB - Antileukoprotease, an inhibitor of leukocyte elastase, was studied in paired sera from 12 patients with maxillary sinusitis. The serum concentration of antileukoprotease was increased at the day of admission to hospital, compared with the serum concentration in convalescence sera. In purulent maxillary sinus secretions antileukoprotease was found in complex with leukocyte elastase, as shown by gel filtration. The findings suggest a local protective function of antileukoprotease in maxillary sinus. PMID- 3851513 TI - [Perfusion pumps]. PMID- 3851514 TI - [Nursing studies curriculum?]. PMID- 3851515 TI - [Acute myocardial infarction and sex behavior]. PMID- 3851516 TI - [The role of nursing in the prevention of blindness due to retrolental fibroplasia]. PMID- 3851517 TI - [Interview with Dr. D. Ricardo Gutierrez Marti, general subdirector of INSALUD hospital treatment]. PMID- 3851518 TI - [Management of a solid organ bank]. PMID- 3851519 TI - [The transplantation coordinator: functions and profile]. PMID- 3851520 TI - [How to plan and apply a budget]. PMID- 3851521 TI - [Factors which influence operating room budgets]. PMID- 3851522 TI - How to plan a can't-miss staff meeting. PMID- 3851523 TI - What Rosie taught us about dying. PMID- 3851524 TI - Flu: how to protect your high-risk patients. PMID- 3851526 TI - Nursing pay: who's doing best now? PMID- 3851525 TI - A survival guide to floating. PMID- 3851527 TI - Is that geriatric patient really ready to go home? PMID- 3851528 TI - Medication aids your elderly patients will love. PMID- 3851529 TI - A drug you can't overuse. PMID- 3851530 TI - When your patient faces a urostomy. PMID- 3851531 TI - Straight talk from a hospital attorney. PMID- 3851533 TI - A new way to help diabetics eat right. PMID- 3851532 TI - Are you all at sea when you float? PMID- 3851534 TI - The challenge of cost containment. PMID- 3851535 TI - How to talk back without raising your voice. PMID- 3851536 TI - Patient's advocate. Do you see only the medical priorities? PMID- 3851537 TI - Do you know what those swabs and bandages cost? PMID- 3851539 TI - Alzheimer's disease: making the most of the time that's left. PMID- 3851538 TI - What to do after CPR. How to help the patient get the air he needs. PMID- 3851540 TI - Emergency! Dealing with head and neck injuries. PMID- 3851541 TI - When you have to draw blood from a femoral vein. PMID- 3851542 TI - The new drugs your patients are getting now. PMID- 3851544 TI - Infection control is your job, too. PMID- 3851543 TI - Why you need your own malpractice policy. PMID- 3851545 TI - What bilirubin tests can tell you. PMID- 3851546 TI - Changing the Act to reflect today's realities. PMID- 3851547 TI - Protecting the quality of nursing care in B.C. Part II. The development of labor relations. PMID- 3851548 TI - The private hell of Alzheimer's disease. A day in the life of the UBC Alzheimer's clinic. PMID- 3851549 TI - Nursing abroad: it's not for everyone. PMID- 3851550 TI - Patients helping patients. PMID- 3851551 TI - [Morphine]. PMID- 3851552 TI - [Sterile bandage using an application of Corticotulle]. PMID- 3851553 TI - [Digestive disorders induced by chemotherapeutic treatment]. PMID- 3851554 TI - [Method of evaluating antiemetic treatment]. PMID- 3851555 TI - [Alternatives to hospitalization in hemato-oncology]. PMID- 3851556 TI - [The day hospital]. PMID- 3851557 TI - [Hospitalization at home by the Public Assistance agency]. PMID- 3851558 TI - [Home care services with Health-Service]. PMID- 3851559 TI - [Weekly hospitalization]. PMID- 3851560 TI - [Possibility of integrating the family in a special unit. The point of view of a psychiatrist]. PMID- 3851561 TI - [The possibility of integrating the family in a special unit. The point of view of the nurse]. PMID- 3851562 TI - [Central catheters]. PMID- 3851563 TI - [Committee for Hygiene, Safety and Working Conditions]. PMID- 3851564 TI - [Care of catheters]. PMID- 3851565 TI - [Indications for and placement of catheters in the hospital and at home]. PMID- 3851566 TI - [Catheters and infections]. PMID- 3851567 TI - [Handling of antimitotic agents. Precautions to be taken]. PMID- 3851568 TI - [Ludiomil]. PMID- 3851569 TI - [The art therapy workshop: as many roles as places. Report of 3 facilities]. PMID- 3851570 TI - [The earth-element in modelling]. PMID- 3851571 TI - [Art therapy. Specter and image]. PMID- 3851572 TI - [You said art-therapist?]. PMID- 3851573 TI - [Art and art-therapy or the road of a non-conformist therapist. Apropos of a case]. PMID- 3851574 TI - [States of psychomotor agitation]. PMID- 3851575 TI - [Nurses and touch]. PMID- 3851576 TI - [The use of "art"--creation or plastic expression--in psychotherapy, its specificity and relation to verbal psychotherapy]. PMID- 3851577 TI - [The future of care records. How to surmount the difficulties in their use]. PMID- 3851578 TI - [The workshop, an institutional place]. PMID- 3851579 TI - [Preparing a patient for coronarography]. PMID- 3851580 TI - [Measurement of pulse and arterial pressure]. PMID- 3851581 TI - [Patient hygiene]. PMID- 3851582 TI - [Visceral amebiasis]. PMID- 3851583 TI - [Clinical forms and diagnosis of colonic amebiasis]. PMID- 3851585 TI - [Hepatic amebiasis acquired in Guiana. Report of a case]. PMID- 3851584 TI - [Treatment of amebiasis]. PMID- 3851586 TI - [Epidemiology of amebiasis]. PMID- 3851587 TI - [Monitoring of a patient with a pacemaker]. PMID- 3851589 TI - [Protocol and technic in artificial donor insemination]. PMID- 3851588 TI - [Diagnosis of amebiasis]. PMID- 3851590 TI - [Specimen collection technics in the assessment of infertility]. PMID- 3851592 TI - [In vitro fertilization and embryo transfer]. PMID- 3851591 TI - [Secondary sterility]. PMID- 3851593 TI - [Management of a sterile couple]. PMID- 3851594 TI - [Prevention of sterility]. PMID- 3851595 TI - [Toys. Their role in the psychomotor and affective development of young children]. PMID- 3851596 TI - [The day hospital in pediatric surgery]. PMID- 3851597 TI - [The premature infant. Its first communications]. PMID- 3851598 TI - A special report on the clinical nurse specialist. Unlocking the door: keys to success. PMID- 3851599 TI - Faculty practice: a philosophical issue for the '80s. PMID- 3851600 TI - Ethical considerations in nursing education & practice. PMID- 3851601 TI - Nurse educators! Where are we headed? PMID- 3851602 TI - Computers to the OR--STAT! Part 2. PMID- 3851604 TI - Free-standing surgery: what's in it for you? PMID- 3851603 TI - Are you safe in the OR? PMID- 3851605 TI - Reporting incompetent or unethical behavior: an ethical and legal dilemma. PMID- 3851606 TI - The SV40 T-antigen gene can have two introns. AB - F8dl is an SV40 early-region mutant that lacks over 60% of the DNA sequences normally used to encode large T antigen. This mutant employs a novel splice donor junction at nucleotide 4425 to produce a family of doubly spliced messages. A similar splicing pattern with wild-type SV40 mRNA has been observed, indicating that the wild-type gene for T antigen can also have two introns. A single G-to-T base change at nucleotide 4425 is sufficient to eliminate this novel donor splice junction. PMID- 3851607 TI - "Let me win--but if I cannot, let me be brave in the attempt". PMID- 3851608 TI - The role of the anaesthetic nurse. PMID- 3851609 TI - [Clinical symptoms and findings in the upper airway of soot-exposed workers]. AB - Under conditions of the channel black technique of the carbon black producing factory in Oranienburg, DDR, some inhalative noxious agents are discussed, especially dust of carbon black in concentrations three times higher than permitted and the climate is causing aggravated conditions. 58 still exposed, 35 formerly exposed workers and 60 control persons of the same age and smoking habits were asked using a questionnaire and they were examined clinically to find out disturbances of health in the upper airways. Complaints concerning chronic rhinitis partly complicated by crusts and sanguineous nasal secretion more frequently had been stated by exposed workers compared to the control persons. The rhinoscopical findings of the exposed workers and control persons are emphasizing the case history details. By it, more severe chronical mucosal findings were diagnosed in 29 percent of the exposed, but only in 9 percent of the control persons. Obstructions of the nasal breathing are not to be related to the profession in spite of the significant differences of the anamnestical data and clinical findings. On the contrary the disorders of smell seem to be more important concerning the soot exposed workers. The roentgenological findings of the paranasal sinus and the cytological results of nasal secretion do'nt give further hints. The importance of an exposition of more than 10 years is apparent concerning the described morbid changes. Significant fewer complaints concerning the ENT were stated by the formerly exposed workers than the still exposed. Special examinations by an ENT physician should be performed on workers exposed to carbon black having already longer persistent complaints particularly concerning chronical mucosal findings and disorders of smell. PMID- 3851610 TI - [Clinical symptoms and findings in the lower airways of soot-exposed workers]. AB - Eighty three still exposed and 46 formerly exposed workers, exposed especially to dust of carbon black and extreme heat climate conditions up to 2 and 30 years, were asked using a standardized questionnaire concerning complaints of the lower airways. The workers were investigated clinically, by X-rays and functionally to find out disturbances of health in the lower airways. The sputum was investigated cytologically. Moreover, the certificates of death were checked. The results were compared to those of 144 control persons living in the same region. The still exposed and the formerly exposed workers were suffering from chronic bronchitis, from non-specific bronchial hyperreactivity and from obstructive ventilatory disturbances in dependence on the duration of exposition more frequently than the control persons. But the mean values of the one-second value of forced expiratory volume in per cent of the vital capacity of every group were not different. Severe disturbances of the lung function were stated in some cases mostly exposed more than 20 years. On 3 workers, exposed more than 20 years, roentgenological signs of a pneumoconiosis were diagnosed demonstrating the fibrogenic effect of carbon black. The cytological findings of sputum didn't show any new aspects. Compared to the other people no deviating frequencies of causes of death were found, especially not more cases with neoplasma. The mostly less frequencies of symptoms and findings of the formally exposed workers were estimated as a hint for regression of the disturbance. The expected dependence of the signs on smoking habits was not recognized. So the exposition described was emphasized as a professional noxious factor, particularly as compared to the control persons important differences were found and the influence of the duration of exposition on the symptoms and findings was significant. Workers exposed to soot suffering from chronic bronchitis, nonspecific hyperreactivity, and especially obstructive ventilatory disturbances should be held in pulmonary dispensary in time. PMID- 3851612 TI - What the community expects from a nurse on duty. PMID- 3851611 TI - Inhibitor activity against elastolytic enzymes in the bronchial area. A contribution to the pathogenesis of chronic airway obstruction. AB - In the bronchial mucus of patients with long-term airway obstruction free elastolytic activities are observed. These originate from leucocytes with polymorphous nuclei and may cause the digestion of lung tissue and thus an emphysematous lung metaplasia. It is known that the supersensitivity of bronchial musculature increases due to the influence of proteolytic ferments. For the inhibition of elastolytic enzymes, specific, acid-proof, low-molecular inhibitory substances are available. We were able to measure three of them in bronchial mucus against different substrates; i.e. against substrates for trypsin, pancreas elastase and leucocyte elastase. Our results show that the free inhibitor preparation decreases if free elastolytic activity in bronchial mucus is measured and is no longer available if the concentration decreases. It was also found that the concentration of secretory IGA decreases if the elastolytic activity increases. Thus, it is possible that the secretory IGA molecule is attacked by proteolytic enzymes. It is known that in case of chronic obstructive airway diseases lysozyme is released from leucocytes with polymorphous nuclei; in case of silicosis, from macrophages as well. In this study, the lysozyme concentration served as measurement for cell decomposition. The observation showed that in spite of the same lysozyme levels the elastolytic activity in patients can be very different. It is in strong connection with the available inhibitor capacity. Regarding the clinical evaluation can be concluded that some patients show a lack of secretory inhibitors. On a long-term basis, this lack can lead to the formation of emphysemata. PMID- 3851613 TI - Management of time. PMID- 3851614 TI - Nurses anxiety while caring for terminally ill patients. PMID- 3851616 TI - Nurse speak up! PMID- 3851615 TI - A study on incidents of stillbirths in Ndola Central Hospital. PMID- 3851617 TI - Accident and emergency nursing. PMID- 3851618 TI - Science. 1985 AARN Convention: keynote address. PMID- 3851619 TI - Hospitalization of the computer. PMID- 3851620 TI - Pathogenicity and virulence of methicillin resistant Staphylococcus aureus: slime layer production. AB - Nine methicillin-resistant (MR) mutants and three methicillin-sensitive (MS) substrains, all derived from naturally occurring heteroresistant isolates of Staphylococcus aureus were examined for slime production. All strains showed an increased mucoid character when cultured on a modified Staphylococcus Medium No. 110. The uranic acid content of the slime layer ranged from 2% to 6% in the MR mutants and from 1.3% to 5.1% in the MS substrains. The amount of uronic acid per g of dry bacteria ranged from 82.5 mg to 143.8 mg in the MR mutants, and between 51.4 mg and 98.8 mg in the MS substrains. In 3 pairs of MR mutants and MS substrains originating from the same parents, the MR cells possessed more of uronic acid than their MS counterparts. The partially purified polysaccharide part of the slime contained D-galactose, D-mannose, D-xylose, D-galacturonic acid, D-galactosamine and D-glucuronic acid in all strains studied. Its quantitative composition was identical in each pair of the MR mutant and MS substrain; there were, however, considerable differences among the strains and between the pairs. Methicillin resistance and slime formation seem to be independent properties in S. aureus. The presumable significance of the readiness of slime production by MR cocci during infections is discussed. PMID- 3851621 TI - [Clinical and experimental studies on the pathogenicity of clinical isolated Citrobacter freundii]. AB - Clinical and fundamental studies were performed using Citrobacter freundii isolated from urine specimens of in- and out-patients between January 1980 and July 1981. The C. freundii (greater than 10(4)/ml) isolated from urine was closely related to chronic complicated urinary tract infection. MICs of pyridonecarbonic acids (ENX, OFLX and NFLX) and CMX against C. freundii were low. Pyridonecarbonic acids (ENX, OFLX and NFLX) and CMX showed good therapeutic effects against the experimental ascending pyelonephritis of mice according to their MICs. Against the experimental ascending pyelonephritis of cyclophosphamide treated mice, pyridonecarbonic acids (ENX, OFLX and NFLX) showed good therapeutic effects. Experimental intraperitoneal infection of mice was made easily with a low inoculation dose by adding mucin. Pyridonecarbonic acids (ENX, OFLX and NFLX) and CMX showed good therapeutic effects against this experimental model. Experimental respiratory tract infection could not be made in the mice with the organism isolated from urine. PMID- 3851622 TI - How do you teach female self-catheterization? PMID- 3851623 TI - A case of patient abuse. PMID- 3851624 TI - A nurses' clinic for the homeless. PMID- 3851625 TI - The ostomy. Why is it created? PMID- 3851626 TI - The ostomy. How is it managed? PMID- 3851627 TI - The ostomy. What do you teach the patient? PMID- 3851628 TI - Evaluating blood glucose monitors. PMID- 3851629 TI - Patient power. PMID- 3851630 TI - Music's soothing charms. PMID- 3851631 TI - Altered thoughts or altered perceptions? PMID- 3851632 TI - Putting peer review into practice. PMID- 3851633 TI - Vicky. PMID- 3851634 TI - An outbreak of nosocomial Acinetobacter infections from humidifiers. PMID- 3851635 TI - Infection control practitioners: who are we? PMID- 3851636 TI - [Antibiotic-resistant coliforms in a purification station on a pig-breeding farm]. AB - The survival of antibiotic-resistant enteric bacteria in the effluent treatment plant of a pig farm was studied by quantitative determinations of resistant and sensitive populations at different sites of the effluent purification process. The effluent treatment system, combining storage and aeration tanks, reduced the concentration of enteric organisms in the output of the plant to about one-tenth of the concentration found in the incoming untreated slurry. This reduction occurred mainly at the level of the aerated tank and was observed for the total population of enteric organisms as well as for the various populations resistant to ampicillin, chloramphenicol, kanamycin, streptomycin and tetracycline respectively. Moreover, no particular sequence of resistances seems to have been selected during treatment. Storage and aeration of pig slurry before disposal reduces the risk of dissemination of antibiotic-resistant bacteria of animal origin in the environment, as compared to the frequent direct spreading of untreated effluents. PMID- 3851637 TI - Serum protein polymorphism among Tunisian Berbers: haptoglobin, transferrin and group-specific component subtypes, C3 and BF types. AB - The polymorphism of serum proteins (Hp, Tf, Gc, C3 and BF) was determined on 210 samples belonging to Berber groups living in three regions of Tunisian. The gene frequencies obtained among the Berbers are different from the the values observed among the other Tunisians. These frequencies differ also within the three-Berber communities. The data collected show that the actual Berber community is genetically heterogeneous. Despite the presence of some African admixture, the gene pool of the Berbers from Tunisia shows large homologies with Middle Eastern groups rather than similarities with North African populations. PMID- 3851638 TI - OR nurse purchasing influence. Results of a recent survey. PMID- 3851639 TI - Purchasing power. The perioperative nurse's role. PMID- 3851640 TI - Cleft palate repair. Surgical procedure and nursing care. AB - The effects of the disability have decreased over the years as methods of habilitation have improved--the now successful surgical techniques followed by more normal development. The battle is not over, though, because society still attaches a stigma to this anomaly and the speech and hearing handicaps that can result. It remains a challenge to the resources of the cleft palate team nurse to deal with the adverse forces of nature in the habilitation process, as well as the discriminatory attitudes of society toward the patient. The reward is the satisfaction derived from contributing to this life-changing treatment. PMID- 3851641 TI - We missed you. A program to control absenteeism. PMID- 3851642 TI - Perioperative nursing. A survey of schools. PMID- 3851643 TI - Proposed recommended practices. Basic aseptic technique. PMID- 3851644 TI - Proposed recommended practices. Documentation of perioperative nursing care. AORN Recommended Practices Subcommittee of the TPCC. PMID- 3851645 TI - Treatment of bladder tumors with an Nd: YAG laser. PMID- 3851646 TI - Vanadate enhancement of the oxidation of NADH by O2-: effects of phosphate and chelating agents. AB - Vanadate markedly stimulates the oxidation of NADH by O2-. Both phosphate and Tris are inhibitory, but phosphate diminishes the greater inhibitory effect of Tris and thus gives the appearance of stimulating when added to Tris-buffered reaction mixtures. Chelating agents moderately increased the oxidation of NADH but eliminated the much greater catalytic effect of vanadate. Desferal was the most effective of the chelating agents, and could be used to titrate vanadate spectrophotometrically or in terms of the diminution of its catalytic activity. This permitted the demonstration that metavanadate or orthovanadate could form 1:1 complexes with desferal and that orthovanadate was the catalytically active species. PMID- 3851647 TI - Urinary kallikrein excretion in children of parents with essential hypertension. AB - Twelve hour urinary kallikrein excretion was measured in 18 healthy children of parents with essential hypertension and in 47 healthy children of parents without this disorder. No statistically significant difference was observed between the two groups of children. PMID- 3851648 TI - Extracorporeal shock wave lithotripsy: the nurse's role. PMID- 3851649 TI - Pericardial effusion in the uremic patient: nursing considerations and management. PMID- 3851650 TI - Therapeutic aphoresis in the dialysis unit. PMID- 3851651 TI - Comparison of two techniques for percutaneous peritoneal dialysis catheter placement. PMID- 3851652 TI - Bolus administration of streptokinase to declot thrombosed arteriovenous accesses. PMID- 3851653 TI - Nephrology nursing consult: case study. PMID- 3851654 TI - Bolus administration of streptokinase to declot thrombosed arteriovenous accesses. Research critique. PMID- 3851655 TI - A new instant cryoprotectant for human sperm. AB - A new instant cryoprotectant, mainly containing culture medium, human serum albumin, and kallikrein, and its laboratory handling in the cryoprotection of semen are described. A comparative study distributed to three cryobiological centers using either egg yolk citrate medium or instant cryoprotectant showed that neither had a significantly better or worse mean percentage recovery rate. The advantage of the new instant cryoprotectant presented consists clinically in the absence of egg yolk and technically in its easy handling. Therefore, ICP is judged as an alternative to ECM in the cryopreservation of human sperm. PMID- 3851656 TI - Variations in sheep serum conglutinating complement activity and pathway involved in reactivity with sheep erythrocytes sensitized by rabbit antibody. AB - Based on conglutination tests with the sheep E-rabbit A indicator system, three types of sheep sera were encountered. Type 1 sera failed to directly conglutinate or sensitize sheep E-rabbit A for conglutination by bovine conglutinin. Type 2 sera also failed to directly conglutinate sheep E-rabbit A but sensitized the indicator for conglutination by bovine conglutinin. Type 3 sera both directly conglutinated and sensitized sheep E-rabbit A for conglutination. Changes in serum type were induced in sheep by venepuncture (type 1 to type 2) or venepuncture and an intraperitoneal injection of yeast cells (type 2 to type 3). Direct conglutinating activity of type 3 sera was inhibited by heating serum at 50 degrees C for 30 min and was not restored by alternative activation pathway factor B. Chelation of Ca2+ in type 2 and 3 sera blocked sensitization of sheep E rabbit A for conglutination by bovine conglutinin, indicating that the classical activation pathway was involved. PMID- 3851657 TI - Reflections on the ICN Congress. PMID- 3851658 TI - Nursing at the crossroads--again. PMID- 3851660 TI - Living will legislation for Arizona. PMID- 3851659 TI - Malpractice insurance: can nurse-midwifery meet the challenge? PMID- 3851661 TI - 51V-n.m.r. analysis of the binding of vanadium(V) oligoanions to sarcoplasmic reticulum. AB - The binding of mono- and oligo-vanadates to sarcoplasmic reticulum was analysed by 51V-n.m.r. spectroscopy. The observations indicate that, in addition to monovanadate, the di-, tetra- and deca-vanadates are also bound to sarcoplasmic reticulum membranes with high affinity. The binding of the vanadate oligoanions may explain some of the effects of vanadates on the conformation and crystallization of Ca2+-transport ATPase. PMID- 3851662 TI - Questions about the behavioral effects of obstetric medications. PMID- 3851663 TI - Epidural and no epidural anesthesia: differences between mothers and their experience of birth. PMID- 3851664 TI - Antenatal counseling for women working outside the home. PMID- 3851665 TI - High risk infant: concerns of the mother after discharge. PMID- 3851666 TI - The WHO code for the marketing of breast-milk substitutes. PMID- 3851667 TI - Personal construct psychology: a theoretical and methodological framework for nursing research. PMID- 3851668 TI - Using personal construct theory to assess a midwives' refresher course. PMID- 3851669 TI - Leg ulcer management at home. PMID- 3851670 TI - Morbid obesity as a nursing challenge. PMID- 3851671 TI - Nursing research: a major feature of a Victorian degree program. PMID- 3851672 TI - Nursing citizenship--a neglected issue. PMID- 3851673 TI - Tissue-specific expression of kallikrein-related genes in the rat. AB - Four distinct kallikrein-related mRNAs (PS, S1, S2, and S3), encoded by members of a multigene family, are selectively expressed in various combinations in several rat tissues. Although closely related along most of the mRNA sequence, the four mRNAs can be selectively detected with synthetic oligonucleotide probes complementary to highly variable mRNA subregions. PS mRNA, which encodes an enzyme with true kallikrein activity, is present at high levels in the submaxillary gland, pancreas, and kidney. S1 mRNA, which encodes an enzyme similar to the PS kallikrein, is detected only in the submaxillary gland and is present at one-fifth the PS mRNA level. S2 mRNA, which encodes the enzyme tonin, is present in the submaxillary gland at half the PS mRNA level and at a slightly higher level in the prostate. S3 mRNA, which encodes an enzyme very similar to tonin, is present in the submaxillary gland at one-tenth the PS mRNA level and in the prostate at about the same level as tonin mRNA. PMID- 3851674 TI - ATP activation of protein degradation by extracts of crude and purified lysosomal preparations. AB - Activation of proteolysis by ATP was studied in lysates of crude and purified lysosomal preparations from liver and kidney at acid pH. In the crude system, from kidney, it was found that ATP activates proteolysis over a concentration range of 0.1-2 mM. Up to 4-fold activation was observed. GTP and CTP also activated proteolysis, but to a lesser extent. Proteolysis was inhibited by vanadate and molybdate. Fractionation of the kidney lysosomes on Percoll gradients produced two fractions containing lysosomal marker enzymes. Most of the acid phosphatase and the acid pyrophosphatase were found in the lighter band, while most of the beta-galactosidase and cathepsin activity was found in a more dense band. Proteolysis by lysates of both fractions was activated by ATP and inhibited by vanadate and molybdate. In the dense band proteolysis was also nearly totally blocked by pepstatin, and was enhanced by an inhibitor of pyrophosphatases, sodium fluoride. ATP also activates proteolysis in crude lysosomes from liver, but upon fractionation of this tissue it was found that all the lysosomal enzyme markers are present in the dense fraction obtained from the Percoll gradient. Again, proteolysis by lysates of the purified fractions was activated by ATP and inhibited by vanadate and molybdate. These data indicate that ATP can activate proteolysis at acid pH in a lysosomal milieu containing enzymes which also catalyze its breakdown. In the kidney there may be two lysosomal compartments which separate the enzymes catalyzing ATP breakdown from the proteolytic enzymes, but this is not essential for ATP activation as shown by the data from the liver and the crude lysosomal fractions. PMID- 3851675 TI - Iron stores in female blood donors evaluated by serum ferritin. AB - Iron stores were evaluated by serum ferritin determinations in 948 menstruating and 141 non-menstruating female blood donors. Blood donation was associated with a decrease in ferritin. First-time donors (n = 163) had a geometric mean ferritin of 24 micrograms/l and multiple-time donors a value of 19 micrograms/l (p less than 0.01). In the donating population 31.5% had ferritin values less than 15 micrograms/l (i.e. depleted iron stores). Menstruating donors had lower mean serum ferritin than non-menstruating donors (p less than 0.001), and a higher frequency of ferritin values less than 15 micrograms/l (p less than 0.05). There was no relationship between ferritin levels and the number of pregnancies. The frequency of donations was more predictive of ferritin levels than the number of donations. Mean ferritin displayed a moderate fall up to the 2nd donation, and was hereafter relatively constant, whereas an increase in donation frequency was accompanied by a significant decrease in ferritin. Female donors, especially when phlebotomised greater than or equal to 3 times per year, should have their iron status checked at appropriate intervals by measurement of serum ferritin and should be advised regular iron supplementation. PMID- 3851676 TI - An examination of the use of interactive videodisc cardiopulmonary resuscitation instruction for the lay community. PMID- 3851677 TI - The clinically focused descriptive study. Methods of obtaining a complete and accurate coding of observational data. PMID- 3851678 TI - Assessing readiness for interaction with computers in medical centers. PMID- 3851679 TI - Guilt and bereavement: a review. PMID- 3851680 TI - Learning to live with loss. PMID- 3851681 TI - Loss of a loved one. PMID- 3851682 TI - Recognizing and helping victims of torture. PMID- 3851683 TI - Emergency airport style. PMID- 3851684 TI - The real world of the nurse educator. PMID- 3851685 TI - Caring for the elderly relative at home. PMID- 3851686 TI - Elder abuse: it's time we did something about it. PMID- 3851687 TI - Supporting the breastfeeding mother. PMID- 3851688 TI - And last of all hope. PMID- 3851689 TI - A survey of postnatal educational programs in British Columbia, Alberta and Saskatchewan hospitals. PMID- 3851690 TI - Antitumor activities and tumor necrosis factor producibility of traditional Chinese medicines and crude drugs. AB - The antitumor activities and capacity for tumor necrosis factor (TNF) production of traditional Chinese herbal preparations (Zhu-ling-tang, Xiao-chai-hu-tang), crude drugs (Polyporus, Hoelen, Bupleuri radix, Angelica radix, Cnidii rhizoma, Cinnamomum cortex), and Krestin (PSK) were investigated. These drugs were given to DDY mice in the drinking water before and after transplantation of Ehrlich tumors, and the development of the intradermally transplanted Ehrlich tumors and survival rate were observed. A good survival rate and sometimes a complete cure were found in the groups administered Bupleuri radix, Xiao-chai-hu-tang, Angelica radix, or Cinnamomum cortex, while the group given Hoelen showed poor results. To examine the capacity for TNF production these drugs were given to DDY mice PO as initial stimulating agents, to stimulate the reticuloendothelial system (RES) prior to lipopolysaccharide injection. The TNF activity was tested from the cytotoxicity against L cells. Significant differences in capacity for TNF production were observed among the drugs. Relatively high levels of TNF activity were noted in the groups given Angelica radix, Bupleuri radix, Cnidii rhizoma, or Cinnamomum cortex, very low activities in the groups given Xiao-chai-hu-tang, Zhu ling-tang, or Krestin, and no TNF activities in the groups given Polyporus or Hoelen. The TNF capacity for production broadly paralleled the survival rate of the mice transplanted to Ehrlich tumors. Our findings suggest that one mechanism underlying the antitumor activities of these drugs is based on stimulation of the RES and is closely related of TNF production. PMID- 3851691 TI - Induction of tumouricidal leucocytes by the intranasal application of MTP-PE, a lipophilic muramyl peptide. AB - Single intranasal applications of MTP-PE, a lipophilic muramyl peptide, induce tumouricidal and tumouristatic leucocytes in the lungs of rats. In ex vivo assays the tumouristatic activity was detectable for 8 days after drug administration. By separation of the effector cells on Ficoll-Hypaque gradients, it was shown that both neutrophils and macrophages are responsible for this activity. Using the B16/BL6 melanoma system in mice, there was a high survival rate after repeated intranasal applications of MTP-PE. PMID- 3851692 TI - Immune functions and the prognosis of patients with solid tumours. AB - The immune competence of 169 patients with solid malignant tumours was assessed before initiation of radiotherapy or chemotherapy and followed during the course of the disease. The data of years 1974-1984 were collected and subjected to an analysis in order to evaluate their prognostic significance. The number of leucocytes and lymphocytes in the peripheral blood, the percentage or absolute number of E-rosette forming cells or EAC-rosette forming cells or serum immunoglobulin levels did not show any association with the prognosis. Lymphocyte proliferative responses to PHA, Con A and PPD as studied before initiation of the treatment did not correlate with recurrence or final prognosis of the disease, except that the responses to PPD were slightly lower in patients with recurrence of gynaecological cancer, melanoma or gastrointestinal cancer than in their respective control patients. In the values observed after the first treatment course a low response to PPD was associated with poor prognosis in patients with melanoma or gastrointestinal cancer. At the time of recurrent disease the PPD response showed an association with a poor final outcome in patients with gastrointestinal malignancy. Of the responses assessed less than 3 months before death due to cancer, only in patients with breast cancer were low Con A responses seen; in all patient groups the PHA responses decreased in the terminal patients. The results do not support the idea that the methods currently available should be routinely used in the follow-up of cancer patients; rather, they indicate the need to seek new methods for this purpose. PMID- 3851693 TI - Decreased monocyte-mediated cytostasis of human cancer cell in patients with lung cancer. AB - In vivo animal studies support the concept that monocytes and macrophages are important in the immune surveillance of oncogenesis and that in vitro activated murine macrophages are cytocidal for tumour cells. In this study, the tumour cell cytotoxic activity of human peripheral blood monocytes was examined by measuring the inhibition of 3H-thymidine uptake in the human cancer cell line, established in our laboratory from human squamous cell lung cancer. The monocytes from 8 of the 31 lung cancer patients (26%) showed a percentage growth inhibition of less than 69.8%, which exceeded the 95% confidence limits of the percentage growth inhibition observed with healthy control monocytes. On the other hand, among the 16 sarcoidosis and the 8 tuberculosis cases no value was below 69.8%. However, there was no significant difference between the growth inhibition and the clinical stages or histological type. When OK-432, a Streptococcal agent, was administered in vivo to patients with lung cancer, an elevation of the growth inhibition was observed in 7 out of 8 patients. It was confirmed that the tumour cell cytostatic activity of the monocyte is suppressed in patients with lung cancer, and these monocyte deficits hinder the inhibition of tumour growth and metastasis. PMID- 3851694 TI - Comparison of patterns of hybrid resistance to the BALB/c plasmacytomas LPC-1 and MPC-11. AB - Patterns of genetic control of hybrid resistance to the BALB/c plasmacytoma LPC-1 were studied for comparison with those to MPC-11, a plasmacytoma investigated previously. The overall patterns of hybrid resistance to the two tumors were similar, i.e., hybrids between BALB/c and BALB congenic resistant (CR) strains, A and A CR strains, SJL and DBA/2 were as susceptible to LPC-1 as BALB/c mice themselves, whereas hybrids between BALB/c and AKR, C57BL/Ks, DBA/1, C57BL/6 (B6), C57BL/10 (B10) and B10 CR strains were resistant to LPC-1 as previously shown with MPC-11. Heterozygosity within the H-2 complex alone was insufficient for resistance to either tumor. Among hybrids between BALB/c and the B10 CR strains, however, the presence of certain H-2 haplotypes influenced the degree of resistance seen and this H-2 effect was different for the two tumors. A sex effect on resistance to LPC-1, but not to MPC-11, was seen among F1 hybrids between BALB/c and DBA/1 although not in any other F1 hybrids. Among ((B10 X BALB/c)F1 X BALB/c) and (BALB/c X (B10 X BALB/c)F1) and ((BALB/c X B10)F1 X BALB/c) and ((BALB/c X B10)F1 X BALB/c) backcross mice, however, significantly more males than females were resistant to LPC-1 and the results of this study are compatible with the idea that in F1 hybrids between BALB/c and B10, resistance to LPC-1 is controlled by two dominant autosomal genes, one of which is sex-limited and neither of which is linked to H-2. In contrast, hybrid resistance to MPC-11 in this cross is controlled by a single gene. Cross-protection experiments indicated that the two tumors share at least one tumor-associated transplantation antigen. PMID- 3851695 TI - In vitro cloning of tumor stem cells in semi-solid media containing agar and agarose. AB - The formation of tumor stem cell colonies in vitro has been studied by comparing the growth of three mouse teratocarcinoma derived cell lines and one human teratocarcinoma derived cell line in semi-solid media containing either agar or agarose. We show that agaroses should be used in higher concentrations than agar to obtain comparable results. The maximum number of colonies were obtained in agarose over a broader range of concentrations (1%-4% for SeaPrep and 0.5%-2% for SeaPlaque agarose) than in agar, which allowed anchorage-independent growth of tumor cells only over a narrow concentration range (0.3%-0.5%). Overall, the preparation of media containing agarose was less cumbersome than preparation of agar-containing media, primarily because agaroses gelled more slowly and remained liquid in the physiological temperature range. Furthermore, the transfer of colonies from semi-solid media containing agarose to solid surface tissue culture dishes was much more efficient than the transfer of colonies from agar. The stock solutions of SeaPrep agarose could be kept ready for use for extended periods of time. All these features show that the low melting point agarose has considerable advantages over agar for preparation of semi-solid media for anchorage independent tumor cell growth. PMID- 3851696 TI - Tumour necrosis factor and the lysosomal enzymes of macrophages or macrophage like cell line. AB - The relationship between tumour necrosis factor (TNF) and macrophages or macrophage-like cell line, especially the lysosomal enzymes was investigated. The serum lysosomal enzymes and LDH activities were increased in proportion to the TNF production even in different strains of mice. Lysosomal enzymes and TNF activity were released into the supernatant of the culture medium of macrophage enriched peritoneal exudate cells (PEC) or spleen cells derived from Propionibacterium acnes-primed mice after addition of lipopolysaccharide (LPS). After passage through a Sephadex G-10 column, TNF activity could not be detected in the supernatant of these spleen cells after addition of LPS. Also TNF activity could not be detected in the supernatant following destruction of PEC. These results suggest that TNF producibility is strongly related to the degree of activation of macrophages, especially the lysosomal enzymes. The murine macrophage-like cell line, J774, also released TNF activity and lysosomal enzymes after addition of LPS. PMID- 3851697 TI - High concordance between marker profiles of 22 human leukemia-lymphoma cell lines tested with the same monoclonal antibodies before and during the second international workshop on human differentiation antigens. AB - Our laboratory participated in the Second International Workshop and Conference on Human Leucocyte Differentiation Antigens. In this international study the reactivity profiles of monoclonal antibodies were analyzed on normal and malignant hematopoietic cells. The Workshop was divided into three categories: the T-cell, B-cell and myelomonocytic cell studies. We blindly tested 159 coded monoclonal antibodies of the panel for the T-cell study on 22 permanently established leukemia cell lines. The monoclonal antibodies were provided by the Workshop Committee and their reactivity with the target cells was visualized by standardized indirect immunofluorescence. After decoding it was recognized that 11 monoclonal antibodies had been examined on these cell lines prior to the Workshop. The reactivity of these 11 monoclonal antibodies was analyzed and compared with the earlier results. From a total of 217 paired tests done blindly in the Workshop study and prior to the Workshop, 191 tests (88%) did not show significantly different data. The possible reasons for discrepancies include nonspecific Fc-receptor-binding on some cell lines and a relatively nonspecific reactivity of some monoclonal antibodies. This analysis demonstrates the stability of the antigen expression on human leukemia-lymphoma cell lines grown at consistently optimal conditions, for the tests, using the same monoclonal antibodies as in the Workshop, had been performed 0.5-5 years prior to the Workshop study. On the other hand, nonspecific Fc-binding, wide "specificity" of monoclonal antibodies and a shift in antigen expression of the cells (due to poor growth conditions, involuntary induction of differentiation and other factors) must be taken into consideration upon immunological analysis. PMID- 3851698 TI - Modulation of natural killer activity by thymosin alpha 1 and interferon. AB - A single injection of alpha beta-interferon (alpha beta-IFN) (30000 units/mouse), a major biological modifier of natural killer (NK) cytolytic activity, strongly stimulated NK activity in normal mice, as expected, while the same treatment did not statistically alter the NK response in cyclophosphamide (CY)-suppressed animals. We investigated the possibility of thymosin alpha 1 cooperating with alpha beta-IFN in boosting NK activity in CY-suppressed animals. The results show that treatment with thymosin alpha 1 (200 micrograms/kg) for 4 days, followed by a single injection of alpha beta-IFN 24 h before testing, strongly restored NK activity in CY-suppressed mice. Thymosin alpha 1 was, moreover, able to accelerate the recovery rate of NK activity in bone marrow reconstituted murine chimeras. Taken together the data support the concept that the synergic effect between thymosin alpha 1 and alpha beta-IFN could be the result of effects on differentiation of the NK lineage at different levels. PMID- 3851699 TI - Adoptive immunotherapy of a BALB/c lymphoma by syngeneic anti-DBA/2 immune lymphoid cells: characterization of the effector population and evidence for the role of the host's non-T cells. AB - It has been previously shown that the BALB/c lymphoma YC8 is susceptible to lysis by syngeneic anti-DBA/2 lymphocytes and that YC8-bearing BALB/c mice can be cured by adoptive transfer of such immune effectors. In this study in vivo and in vitro functions of the curative immune lymphocytes have been evaluated together with the role of the host immune system in the mechanism of tumor eradication. It was found that the curative anti-DBA/2 lymphocytes were not directly cytotoxic to YC8 cells although they developed into YC8-lytic cells after in vitro restimulation with YC8. In vivo, the immune lymphocytes were able to mediate a tumor-specific delayed type hypersensitivity reaction against YC8 but had a low tumor neutralizing activity in the Winn assay. Proliferation of infused BALB/c anti DBA/2 lymphocytes was necessary for the in vivo therapeutic effect, since irradiation of effector cells or treatment of the donor immune lymphocytes with vinblastine abolished their curative capacity. Immunodepression of the T cell compartment of the prospective tumor-bearing animals by thymectomy plus irradiation or its abrogation in B mice (thymectomized, lethally irradiated, and reconstituted with fetal liver cells) did not interfere with the therapeutic effect of the transferred anti-DBA/2 lymphocytes. Blocking the macrophage functions of the host by carrageenan, however, abolished the therapeutic effect of immune lymphocytes. These data indicate that a radiation-resistant, non-T cell is involved in the tumor eradication induced by anti-DBA/2 lymphocytes. It was also shown that cured mice, tested 90 days after therapy, become resistant to 5 X 10(3) LD80 YC8 cells and that this resistance was due to the presence of memory cells derived from the transferred and not from the host lymphocyte population. PMID- 3851700 TI - The synergistic tumoricidal activity of anticancer drugs and oxidative burst triggered macrophages. AB - The anticancer drugs adriamycin (ADR) and actinomycin D (AMD) were tested for their effect on the oxidative burst (OB) of mouse peritoneal macrophages (MPM) and on the killing of tumor cells by OB-stimulated MPM. The oxidative burst of MPM determined by hydrogen peroxide (H2O2) production was severely impaired by ADR (10 micrograms/ml) and AMD (40 micrograms/ml) after a 1 h treatment and by lower concentrations of the drugs following a 24 h treatment. The toxicity of the drugs against MPM was comparable to their effect on EL4 cells. Pretreatment of EL4 and TLX-9 tumor cells with sublethal amounts of ADR for 4 h rendered the cells sensitive to the cytotoxic effect of OB-stimulated MPM which were otherwise unable to kill these cells. It seems that anticancer drugs and OB-stimulated macrophages can cooperate in the destruction of tumor cells in vitro. PMID- 3851701 TI - Concomitant tumor immunity in the mammary gland. AB - The mouse mammary fatpad is immunologically privileged relative to the subcutis for the transplantation of nonmalignant tissues. Mouse mammary tumors, however, induce tumor-specific immunity in the mammary fatpad. Immunizing tumor cells were injected into the fatpad or subcutis at several time periods before challenge tumor cells were injected into the subcutis on the contralateral side and the time of onset of concomitant immunity was determined. Mice immunized by transplantion of tumor cells into the subcutis became resistant to challenge tumor transplants before mice immunized with tumor cells transplanted into the fatpad. By utilizing a metastatic tumor line which is resistant to thioguanine and ouabain, it was directly demonstrated that tumor cells from a s.c. implant reached the regional inguinal lymph node before tumor cells from a mammary fatpad tumor implant. PMID- 3851702 TI - Clinico-pathological aspects of immunotherapy by intralesional injection of BCG cell walls or live BCG in bovine ocular squamous cell carcinoma. AB - Bovine ocular squamous cell carcinoma (BOSCC) of clinical stage I, mostly situated in the third eyelid, was chosen as a therapy model for squamous cell carcinoma of the head and neck in humans. Block resection was found to be the best method of treatment. Regression was noticed in 19 out of 30 cows treated intratumourously with a single injection of live BCG or BCG cell wall vaccine, followed by recurrence in 8 cases. In 2 untreated cows, complete lasting regression occurred. Regression was significantly more frequently encountered in intratumourously treated cows than in controls. Regression was associated with a high mitotic index, severe infiltrating growth and small amounts of cellular (lymphoid) infiltration. Metastasis was found in 14 out of 50 cows: 5 in 10 untreated controls, 8 in 30 BCG treated cows and 1 in 10 surgically treated cows. The growth rate of progressively growing untreated and of some treated tumours was not associated with the mitotic index nor with other morphological characteristics tested. The mitotic index was found to be higher in the deep infiltrating layer than in the superficial layer of the primary tumour, suggesting that a single biopsy is not sufficiently representative for cell kinetic studies. PMID- 3851704 TI - Some anatomical variants and pitfalls in computed tomography of the trachea and mainstem bronchi. II. Compression or anatomical variants? AB - 472 computed tomographic (CT) examinations in 448 patients were reviewed for depression of the wall of the trachea and mainstem bronchi. Depression was defined as a neutral term, not indicating pressure exerted upon the wall. Such depressions appeared to occur very frequently as a variant. Special attention is paid to the so-called azygos vein indentation. The most marked depression variants in our series are reproduced. When a depression is found in contiguity with a pathological mass and does not exceed the range of the variants, one cannot be sure that the mass is indeed the cause of this depression. In patients with bronchogenic carcinoma, depression of the wall of the trachea or mainstem bronchus seems to be no better sign for the metastatic nature of lymphadenopathy than size per se. PMID- 3851703 TI - Generation of the bioactive kallikrein-derived fragment, C3d-k, by HANE-plasma. AB - Recent studies have concluded that after complement activation the final physiologic degradation products of C3 are C3c and the fragment of relative molecular mass (Mr) 42,000 which contains the C3d and C3g domains and was therefore named C3d,g. Using fluorescent labelled C3b as a substrate, we have determined the putative C3d,g ('C3d,g') producing activity of both normal and hereditary angioneurotic oedema (HANE) plasmas. In normal plasmas, the rate of production of C3d,g was 1.0 +/- 0.2 X 10(-10) mol/ml/h and this activity was blocked by antibodies to I. In contrast, HANE, plasmas (deficient in C1INH) showed more than twice as much 'C3d,g' production as normal plasmas and both antibodies to I and kallikrein were required to inhibit this activity. Because of this result, a more sensitive gel system was employed to detect the Mr 42,000 peptide and two 'C3d,g' fragments of approximately equal intensity with Mr of 42,000 and 43,000 were defined. Incubation of purified kallikrein with labelled iC3b produced a C3d,g-like fragment, C3d-k, that aligned with the band of 43,000 Mr generated in HANE plasma. These results indicate that HANE plasma, in contrast to normal plasma, generates the bioactive C3d-k fragment. C1INH blocks the activities of kallikrein and C1s, and C3d-k generation in HANE plasma is probably secondary to the proteolytic activity of kallikrein. PMID- 3851705 TI - Analysis of the spinal column with the aid of C-arm equipment, with special regard to rotation about the longitudinal axis. AB - Many methods and anatomic landmarks have been used to assess vertebral rotation radiographically. A method is described by which it is possible to determine accurately the three-dimensional orientation of a vertebra by taking advantage of its anatomical symmetry, especially regarding the rotation about the longitudinal axis. PMID- 3851706 TI - Homing and circulation of indium-111-labelled leucocytes. A post-mortem study. AB - The history of a patient with a suspected ischemic brain infarct undergoing an indium-111-tropolone white cell labelled test is reported. The patient, who died 12 h after injection of the labelled cells, suffered of a brain haemorrhage. The post-mortem examination has allowed for the first time the measurement of radioactivity in different organs following the injection of indium-111-labelled leucocytes. High radioactivity was found only in tissues affected by inflammatory processes and in the lymphonodes draining the corresponding areas. This report clearly indicates the importance of this method for the study of white cell localization and circulation to the sites of infections. PMID- 3851707 TI - Osteolysis of the shaft of tubular bones in systemic scleroderma. AB - This case report describes a woman with progressive systemic sclerosis who, in addition to the more classical acro-osteolysis, demonstrated destruction of the shafts of the phalanges and the ulna. The literature on bone lysis in atypical sites in scleroderma is reviewed and the etiology discussed. PMID- 3851708 TI - The comparative in vitro susceptibility of cefazolin-resistant organisms to six cephalosporins, four penicillins, and three aminoglycosides. AB - One thousand thirty-seven cefazolin-resistant, gram-negative clinical isolates including members of the family Enterobacteriaceae, pseudomonads, and other nonfermenters were tested against a variety of newer antimicrobial agents by microdilution. Most of the Enterobacteriaceae were resistant to the second generation cephalosporins, but highly susceptible to the third-generation agents and the broad-spectrum penicillins, 90% of the strains being inhibited at attainable serum concentrations. Cefoperazone and the penicillins had good activity against the Pseudomonas species, but the aminoglycosides remained the most active agents against all the gram-negative bacilli tested except Pseudomonas maltophilia. PMID- 3851709 TI - Ascending and descending spinal cord tracts. PMID- 3851710 TI - Management of the cardiac tamponade patient: a nursing framework. PMID- 3851711 TI - Circadian rhythms: implications for evaluation of the critically ill patient. PMID- 3851712 TI - Hyperglycemic hyperosmolar nonketotic coma: a nursing care plan. PMID- 3851713 TI - Computers bring new vocabulary to critical care nurses. PMID- 3851714 TI - Mystery arrhythmia. PMID- 3851716 TI - Psychosocial aspects of critical care nursing. Loss and grief: unravelling two complex phenomena. PMID- 3851715 TI - Emergency neurologic assessment. PMID- 3851717 TI - Fibrosis. PMID- 3851719 TI - Chemoattractants in fibrotic disorders. AB - Fibrosis represents an excessive deposition of connective tissue which impedes the normal functions of an organ or tissue. The mechanisms leading to this increased deposition of connective tissue may be similar to those occurring in normal wound repair. We have previously shown that the repair process involves the migration of connective tissue cells to the site of injury and their subsequent proliferation. One of the principal factors controlling these events appears to be the platelet-derived growth factor (PDGF). PDGF acts as a potent chemoattractant and mitogen for connective tissue cells but not other cell types. In addition to PDGF, factors produced by monocytes and tissue macrophages also act as chemoattractants for connective tissue cells. These observations suggest that such activities may be abundant in areas of inflammation. In normal repair these factors would be present for a relatively short period of time, whereas in fibrosis the chronic inflammatory response could maintain a constant or repeated release of such factors. This would recruit additional connective tissue cells to the area of inflammation, changing the cellular composition of the affected organ or tissue, resulting in an expansive and permanent nodule of connective tissue. PMID- 3851718 TI - Cell interactions in post-traumatic fibrosis. AB - Models of reparative fibrosis, or wound healing, disclose a basic spatial relationship between inflammatory cells, fibroblasts, dividing fibroblasts and angiogenic endothelial cells. Many components of the extracellular fluid, especially steep gradients of PO2, PCO2, pH, glucose and lactate, have been measured. After components of coagulation play out their role in the first few days after injury, macrophages sense excitatory substances and signs of respiratory distress, and secrete chemoattractants for endothelial cells and fibroblasts. If excitatory substances (such as silica) are eliminated, active fibrosis ends with the restoration of the energy supply. Some of the mitogens and chemoattractants acting as intercellular messengers between these cells have been isolated and identified. PMID- 3851720 TI - HLA associations in fibrotic disease. AB - HLA antigens have been associated with a wide variety of human diseases. In general these associations are not absolute in the way that classical genetic disorders are. Thus although the association between ankylosing spondylitis and HLA-B27 has been known for 11 years we are not able to define a closer genetic marker for the disease or indeed to define the mechanism by which B27 is involved with the disease process. This paper indicates the major disease associations with HLA antigens and compares them with those found in fibrotic disease. Some attempt is made to localize the position in the disease process where HLA might play a role. The aim of studies of HLA associations often includes the identification of at-risk groups in the hope of being able to apply selective preventive measures. Some progress along this path has been made and is outlined. PMID- 3851721 TI - Host immune factors regulating fibrosis. AB - Mononuclear cells produce lymphokines and monokines, the function of which is to initiate the mobilization, proliferation and differentiation of additional mononuclear cells in an inflammatory site. In addition, these inflammatory cells produce biologically active mediators which modulate the functions of certain non inflammatory cell targets. Lymphokines and monokines can stimulate chemotaxis, division, and matrix synthesis by connective tissue fibroblasts. Additional mononuclear cell-derived mediators can inhibit or suppress these fibroblast functions, implicating the host immune system in the regulation of connective tissue metabolism associated with an inflammatory response. Altering the balance of the production and/or release of these connective tissue-active agents could result in excess fibroblast growth and matrix synthesis (fibrosis) and its pathological manifestations. PMID- 3851722 TI - Collagen deposition in autoimmune diseases: the expanding role of the fibroblast in human fibrotic disease. AB - Fibrosis, usually considered an extension of the normal process of wound healing, follows to a variable degree host responses of an inflammatory nature, both immune and non-immune. The immediate mesenchymal effector cell of fibrosis, the fibroblast, has more or less been taken for granted in this process, due largely to its monotonous morphological uniformity. An emerging realization that the fibroblast can react in a variety of ways, both as an amplifying population of cells and in selective ways as the final arbiter of the extracellular matrix, is the subject of this report. This heterogeneity of fibroblast behaviour is characterized and, since many types of cells (endothelial, smooth muscle, epithelial) have now been shown to respond to matrix-derived signals, the potential for mesenchymal cell selection as a mechanism for understanding human fibrotic disease is probed. Signals which selectively alter fibroblast proliferation and fibroblast phenotypic expression are emphasized. PMID- 3851723 TI - Regulation of fibroblast proliferation by Kupffer cells and monocytes. AB - Liver cirrhosis can be considered as an alteration of the homeostatic mechanisms that maintain cell-cell and cell-matrix interactions. The mechanisms that maintain homeostasis and, therefore, that control fibroblast proliferation and collagen synthesis, are unknown. Experiments were performed to study the role of Kupffer cells in regulating fibroblast proliferation and collagen synthesis and to study the antifibrogenic properties of colchicine. Non-parenchymal cells isolated from normal and CCl4-treated rats were cultured. The cultures from normal livers contained few fibroblasts whereas those from CCl4-treated animals contained many fibroblasts. Removal of adherent cells obtained from normal liver favoured fibroblast proliferation. The fibroblasts from normal or CCl4-treated rats were similar and contained collagens type I and type III. The results obtained suggest that normal Kupffer cells control fibroblast proliferation and that incoming monocytes stimulate fibroblast proliferation. Colchicine inhibits the entry of monocytes into the injured liver and could prevent liver fibrosis by this mechanism. PMID- 3851724 TI - Biochemical pathways leading to collagen deposition in pulmonary fibrosis. AB - Fibrosis in the lung is well described histologically. There is destruction of the normal architecture with the appearance of inflammatory cells and connective tissue components, particularly collagen. Biochemical evidence for an increased deposition of collagen in man has been demonstrated in patients with both acute and chronic forms of pulmonary fibrosis. Studies of collagen metabolism in man are equivocal but there is convincing evidence for an increased synthesis rate in animal models of pulmonary fibrosis. Collagen degradation has been little studied but may be important, given the recent evidence indicating quite rapid turnover of lung collagen and a decreased degradation of collagen in experimental disease. The distribution of collagen types has been studied in man, where there is some evidence for the production of type III collagen in the early active phase of disease with a preponderance of type I collagen in the late stages. The cellular mechanisms leading to these changes are uncertain but the alveolar macrophage may play a central role, since it is capable of releasing factors which expand the fibroblast population as well as attracting new fibroblasts to the site of injury. These pathways are described for what is essentially the normal physiological response of scar formation, which has pathological consequences in the lung, a tissue requiring thin membranes at its epithelial and endothelial surfaces, in order to perform its main function of gas exchange. PMID- 3851725 TI - The fibroblast in morphogenesis and fibrosis: cell topography and surface-related functions. AB - 'Fibroblast' is a generic term for a population of cells responsible for the establishment, maintenance and repair of three-dimensional form in multicellular organisms. These cells are a major, semi-permanent resident of the 'extracellular space' and the fibroblast compartmentalizes this space to various purposes during the formation of collagen fibrils and fibril bundles. The boundaries of these extracellular compartments blend and overlap, but discrete regions can be identified which are involved in collagen fibril assembly and fibril bundle assembly. The formation of these extracellular compartments in both the tendon and cornea results from a series of fusions of membrane-limited structures, beginning with collagen secretory vacuoles fusing with the cell surface to form deep surface recesses within which fibrils assemble; and progressing through the lateral fusion of these recesses with the consequent formation of fibril bundles. The topography of the fibroblast is also specialized for matrix anchorage, for matrix and cell repositioning, and for matrix degradation. PMID- 3851726 TI - The structure of collagen. AB - A knowledge of the structure of collagen fibrils is important for any rational discussion of the occurrence and treatment of fibrosis. The different genetic types of collagen, and the structure of the triple-helical molecule as refined from X-ray fibre diffraction data, are described. The problem of determining molecular arrangement in native tissues is discussed. The various models proposed for the molecular arrangement of type I collagen are compared and an account is given of the quasi-hexagonal model. A detailed analysis of the X-ray diffraction patterns from native type I collagen fibres is used to provide a quantitative description of the quasi-hexagonal model. Parameters such as molecular positions, azimuthal orientation and axial shift can be estimated from the diffraction patterns. These parameters refer to the helix main-chain. Side-chain conformations can then be built in by molecular graphics and the predicted X-ray pattern for the complete model compared with the observed pattern. PMID- 3851727 TI - Intermolecular cross-linking in fibrotic collagen. AB - The extent, nature and location of the cross-links involved in the stabilization of collagen in fibrotic lesions are crucial to its subsequent removal, naturally or induced by treatment. Stabilization is achieved initially by divalent aldimine and keto-imine intermolecular cross-links located at the end-overlap region in the quarter-stagger alignment of the molecules in the fibre. Elucidation of the location of the cross-links also provides chemical evidence for the organization of the collagen molecule in the fibre. All the fibrous collagens are stabilized by these cross-links, the more stable keto-imine cross-link predominating in the types I and II collagens present in the initial stages of fibrosis. Further stabilization of the lesion usually follows, increasing the resistance to degradative enzymes, thus rendering the fibrosis irreversible. This maturation process, which also occurs in normal ageing, involves the formation of multivalent cross-links derived from the initial aldimine and keto-imine cross links to form a three-dimensional network through a polymeric peptide (poly-alpha 1CB6 in type I collagen). The nature of these cross-links has not yet been elucidated. The so-called mature cross-link, 3-hydroxypyridinoline, could not be identified in this polymeric network. A secondary process involving non-enzymic glycosylation of lysine residues and subsequent intermolecular cross-linking has also been demonstrated, although the nature and extent of this type of cross-link remain to be determined. PMID- 3851728 TI - Lower limb ischemia: an iatrogenic complication of IABP. PMID- 3851730 TI - IABP: legal and ethical issues. PMID- 3851729 TI - Compartment syndrome: a complication of IABP. PMID- 3851731 TI - Ethylene glycol poisoning. PMID- 3851732 TI - Open visiting in the ICU: a debate. PMID- 3851733 TI - Using cognitive channels in patient education. PMID- 3851734 TI - Selecting professional home study programs. PMID- 3851735 TI - Stevens-Johnson syndrome (continuous education credit). PMID- 3851736 TI - Stevens-Johnson syndrome: a multisystem case. PMID- 3851737 TI - Reducing cardiac cachexia before cardiac valve replacement. PMID- 3851739 TI - Should CCRN nurses receive a salary differential? PMID- 3851738 TI - The role of critical care nurses in the ethical decision-making process. PMID- 3851740 TI - High-risk maternal and neonatal transport: psychosocial implications for practice. PMID- 3851742 TI - Flatfishes breathe symmetrically: an experimental reappraisal. AB - Experimental analysis of the pressure changes in the respiratory cavities of the American winter flounder Pseudopleuronectes americanus, together with electromyographic recordings of key respiratory muscles and cineradiographic observations of the distribution of radioopaque dye, have revealed unequivocally that the respiratory current and underlying mechanisms are symmetrical. The respiratory apparatus, as in other teleosts, is driven by bilaterally symmetrical alternating buccal pressure and opercular suction pumps. An elaborate deflecting apparatus is present in the respiratory cavities of flatfishes to maximize the irrigation of gills of both sides. Functional symmetry is maintained in the morphologically asymmetrical flatfishes and a high premium is put on the bilateral distribution and opercular ejection of the respiratory current during the evolutionary radiation of the Pleuronectiformes. PMID- 3851741 TI - The two intervening sequences of human beta- and gamma-globin pre-mRNAs are excised in a preferred temporal order in vitro. AB - Splicing of complete synthetic human beta- and gamma-globin mRNA precursors (pre mRNAs) follows a preferred pathway in vitro. In almost all molecules, excision of the first intervening sequence (IVS) is completed before excision of the second IVS initiates. However, in a very small fraction of molecules the order of IVS excision is reversed. PMID- 3851743 TI - Intracellular recording from single and double cone cells isolated from the fish retina (Tinca tinca). AB - Intracellular recording were obtained from isolated single and double cone cells of the tench retina. Photoresponses show features characteristic of other species and behave linearly with very dim illumination. The cells spectral sensitivity matches their pigment absorption spectrum measured by previous authors. The principal and accessory members of double cones show a maximal sensitivity peak at about 644 and 547 nm, respectively. In addition, each of the two action spectra shows a secondary inflection at the peak wavelength of the adjacent member, suggesting functional coupling between the two members of double cones. PMID- 3851744 TI - Estimation of sodium uptake through the gill of the rainbow trout Salmo gairdneri. AB - Sodium exchanges through the gill epithelia were estimated in the rainbow trout, Salmo gairdneri, using the perfused head technique. The head tissues accumulate radioactivity. In addition there exists an extrabranchial entry of sodium, which is 20 times smaller than the branchial one. The study of the evolution of venous and arterial sodium specific activities as a function of time is necessary before flux measurements are achieved. Contrary to previous studies, an uptake at the primary lamella level is demonstrated. Uptake of sodium through the secondary lamellae can be measured rapidly while at least 30 min are needed for measurement of uptake through the primary lamellae. Chloride cells of the primary lamellae contribute to about 20% of the total sodium uptake. PMID- 3851745 TI - Lectin binding sites on the outer segment membranes of photoreceptor cells in the pineal organ of Lampetra planeri (Cyclostomata). AB - The glycoproteins of the outer segment membrane of photoreceptor cells in the pineal organ of Lampetra planeri were studied using the affined properties of lectins to sugar moieties. Among five different lectins, labelled with fluorescein-isothiocyanate, Concanavalin A (Con A) and wheat germ agglutinin (WGA) induced an intense fluorescence on the large outer segments protruding into the lumen of the pineal organ. The complementary sugars, alpha-D-mannopyranosyl (for Con A) and N-acetyl-D-glucosamine (for WGA), inhibit the binding of both lectins. By means of electron microscopy, after incubation in Con A and labelling with peroxidase, and intense enzymatic activity was revealed in the diskal spaces by the technique of Graham and Karnovsky (1966). These results suggest the presence of glycoproteins rich in mannose and N-acetyl-D-glucosamine thus implying the presence of a photopigment of similar composition and structure to that of rhodopsin or rhodopsin itself. PMID- 3851746 TI - Comparison of the olfactory responses to amino acids obtained from receptor and bulbar levels in a marine teleost. AB - Comparison of the olfactory responses to amino acids was made between electro olfactogram (EOG) and induced bulbar electroencephalogram (EEG) in a marine teleost, red sea bream (Pargus major). The increase of the magnitude of EOG responses to five amino acids (L-glutamine, L-alanine, L-methionine, L phenylalanine and L-aspartic acid) was shown to have exponential functions against logarithmic increase of the stimulus concentration within the range tested (10(-5) to 10(-2) M), and were found to have similar exponents ranging from 0.21 to 0.25. In EEG, dose-response curves for six amino acids (L-glutamine, L-alanine, L-arginine, L-methionine, L-serine and glycine) showed two different functions within the range tested (10(-5) to 10(-2) M). Against logarithmic increase of the stimulus concentration, responses increased exponentially for L glutamine and L-arginine, and sigmoidally for L-alanine, L-methionine, L-serine and glycine, and even in the exponential functions exponents showed considerable diversity (0.12 to 0.21). Comparison of relative stimulatory effectiveness of amino acids between the two responses (EOG vs. EEG) revealed that in general they are similar. But a considerable difference was also found in L-glutamic acid which was more effective in producing EOG than EEG. PMID- 3851747 TI - [Assessment of the readiness of a woman's body for childbirth]. PMID- 3851748 TI - [Pulmonary edema]. PMID- 3851749 TI - [Chromosome diseases. II. Syndromes related to disorders in the sex chromosome system]. PMID- 3851750 TI - [Perforated gastric and duodenal ulcers]. PMID- 3851752 TI - [Closed craniocerebral injuries]. PMID- 3851751 TI - [Deontology in venereology]. PMID- 3851753 TI - [Health education work among the population to prevent complicated forms of acute surgical diseases of the abdominal organs]. PMID- 3851754 TI - [Threatened premature labor]. PMID- 3851755 TI - [Stenocardia of effort. Hypertension]. PMID- 3851756 TI - [Climacteric syndrome. Dysfunctional uterine hemorrhage]. PMID- 3851757 TI - [Late action of a chemical substance on the health status and the development of progeny]. PMID- 3851758 TI - [Microbiology and the prevention of staphylococcal diseases]. PMID- 3851760 TI - Nursing: the international language. PMID- 3851759 TI - Nursing the critically ill child. A responsive approach. PMID- 3851761 TI - Professional profile: Hetty M. Krap. Promoting international exchange among nurses. PMID- 3851762 TI - Arterial prosthetic graft infections. The pathophysiologic basis of nursing care. PMID- 3851763 TI - Syndrome of inappropriate antidiuretic hormone: a growing concern. PMID- 3851764 TI - Coping with stress in critical care nursing: research findings. PMID- 3851765 TI - Ethical dilemmas in critical care. A proposal for hospital ethics advisory committees. PMID- 3851766 TI - Legal issues in nursing. Whose decision is it, anyway? PMID- 3851767 TI - Little Miss Dogsbody. PMID- 3851768 TI - Making the best use of drugs. PMID- 3851770 TI - Discharge planning: it's different at night. PMID- 3851769 TI - Day by day care. PMID- 3851771 TI - The challenge of geriatric nursing. PMID- 3851772 TI - A visit to New Zealand. PMID- 3851773 TI - Extra care units at Colchester. PMID- 3851774 TI - Becoming a nurse: the ethical perspective. AB - This paper examines selected features of neophyte nursing students' approach to the moral dimension of their future practice. It argues that rapid changes in medical technology and in social perceptions of morality necessitate a critical examination of the content, sequence and methods of introductory ethics education in nursing. It suggests that greater emphasis should be placed upon individual moral development; and that Codes of Ethics and Bills of Rights should be presented as ideal statements, to serve as guides in assessing the ethical situation of the client. Some reactions of students are reported. PMID- 3851775 TI - Individual vs aggregate good: ethical tension in nursing practice. AB - In this paper the ethical tension between the obligation to benefit the individual client and the obligation to benefit society is critically examined. Descriptions of both obligations in nursing practice as found in professional statements on practice standards, social policies and codes of ethics are discussed. Theoretical foundations for both ethical obligations are described and their implications for nursing practice are discussed. Since promoting one good over the other has serious implications for requirements of moral accountability in nursing practice, several strategies for the distribution of nursing resources and the balancing of the two obligations are proposed. It is concluded that meeting requirements for moral accountability in today's health care delivery system means being answerable for how the nurse determines the justifiability of promoting one good over the other and for articulating justifiable reasons for limiting the provision of either individual or aggregate good in specific nursing care situations. PMID- 3851776 TI - East meets west: some ethical considerations. AB - Japan, one of the most developed and industrialized countries in the world, may appear totally Westernized, but Japan has a culture of traditional customs and beliefs. This paper sheds light on the confusion of value orientations among Japanese nurses whose professional socialization is heavily influenced by Western culture and whose personal life depends on traditional culture. Examples of Japanese culture-bound values clarify the differences between Western and Japanese cultures. The importance of engaging in value clarification and analyzing the ethical principles behind decision-making is noted. PMID- 3851777 TI - Ethics and care for the elderly. AB - This article uses the case of presenile and senile dementia to discuss ethical concepts that have potential to guide nursing action. The concepts of 'sanctity of life' versus 'quality of life' or 'dignity' are both unsatisfactory for directing nursing intervention whenever proxy judgment is necessary. Guidelines for action must evolve from research, the search for clinical knowledge. As an underlying attitude and additional guide the author describes a Jewish ethical perspective which defines dependence and interdependence as an essential part of human existence and accepts the inevitability of living with moral uncertainty. PMID- 3851778 TI - Ethics of death and dying. AB - This paper focuses on selected ethical questions that can arise in caring for the dying. They are: (1) What are the limits of treatment and who decides them? (2) How do we deal with suffering and the alleviation of pain? (3) How does the nurse present her humane self to the dying patient? The framework used to reason through these questions comes from the criteria developed to describe the concept, full life. PMID- 3851780 TI - Is there unwarranted risk in cohorting AIDS patients? PMID- 3851779 TI - A programme for nursing ethics. AB - This article defines nursing ethics and its place within the disciplines of ethics and nursing. The current endeavours of nursing ethics are identified as: revising codes, assisting nurses to reason ethically, and establishing the nurse's role in ethical decision-making regarding ethical issues, particular clients, and society's definition of health and illness. The authors then propose the further development of nursing ethics to examine critically the ethical dimensions of nursing practice with regards to its theories, diagnostic categories, diagnostic procedures, treatment goals and treatment procedures. PMID- 3851781 TI - Whirlpool operation and the prevention of infection. AB - Disease outbreaks involving public whirlpools have been reported frequently since their use has become popular in recent years. Because public whirlpools are often used by persons who have only transient contact, infections resulting from their use are difficult to identify, and published reports probably represent only a small portion of a larger public health problem. Most published outbreaks have reported Pseudomonas aeruginosa contamination of the whirlpool as a result of failure to operate the pool according to recommended practices. Maintaining the microbiologic quality of whirlpool water and preventing infection absolutely require regular operation and maintenance, including monitoring and record keeping by qualified personnel. PMID- 3851782 TI - Pool-associated Pseudomonas aeruginosa dermatitis and other bathing-associated infections. AB - The growing popularity of heated pools, especially whirlpools and hot tubs, has been accompanied by increasingly frequent outbreaks of an illness produced by Pseudomonas aeruginosa. The illness usually includes folliculitis, pruritic skin rash, and/or otitis externa and occasionally mastitis and systemic symptoms. Although usually self-limited, rare severe cases have been described. Motel and hotel whirlpools are most often implicated as the source of outbreaks. The relative importance of pool conditions and the bacteriology of P. aeruginosa in the pathogenesis of this illness remain to be elucidated. Implementing CDC Guidelines for public spas and hot tubs seem the most reasonable way of reducing the risk of large outbreaks. Prevention of cases arising from home hot tubs or whirlpools will be very difficult and may depend on extensive public education or the development of simple, inexpensive and effective disinfection systems. PMID- 3851783 TI - Public health implications regarding the epidemiology and microbiology of public whirlpools. AB - High temperature bathing in hot tubs, spas and whirlpools poses four potential public health concerns: injury/death, disease transmission, possible teratogenic effects, and congestive heart failure or dysrhythmias for individuals with cardiac problems. Health departments need criteria before initiating environmental and epidemiologic investigations. These criteria must include severity of the disease and number of individuals possibly exposed. In addition, public health officials are obligated to define the magnitude of the problem, inform affected individuals and institute appropriate control measures. Optional information should be collected during an environmental and epidemiologic investigation to clarify the mechanisms of disease transmission and design control measures. The public health response to improving hot water bathing safety and sanitation should be directed at primary prevention. Educational efforts would be directed toward whirlpool operators, users and the medical community. Included should be a review of regulations addressing the construction and operation of public spas and whirlpools. PMID- 3851784 TI - Infections in long-term care facilities. PMID- 3851785 TI - Infection control in pulmonary function laboratories. PMID- 3851787 TI - Methicillin-resistant Staphylococcus aureus: clinical and laboratory features. PMID- 3851786 TI - Methicillin-resistant Staphylococcus aureus (MRSA): risk and outcome of colonized vs. infected patients. AB - A retrospective study of 204 patients culture positive for methicillin-resistant Staphylococcus aureus compared infected and colonized patients. Seventy-eight patients were colonized and never developed infection (C), 24 were colonized and subsequently infected (C----I), and 102 patients had 1 or more nosocomial infections with MRSA at time of first culture (I). The most prevalent sites of infection were wound (26.5%) and blood-stream (20.7%), whereas the respiratory tract and surgical wounds were both frequent sites of colonization. Stepwise discriminant analysis found the most important factors in differentiating likelihood of colonization vs. infection were recent prior hospitalization, history of wound debridement, and number of invasive procedures. Ten percent of (C) died and 25.5% of (I) died. MRSA contributed to death in 57.6% of the (I) deaths (p less than .05). These results underscore the importance of differentiating (C) vs. (I) in hospitals where MRSA is endemic so that early specific treatment may be initiated. Risk factors for infection should be discriminated from those for acquisition of the organism. PMID- 3851788 TI - Worried sick. PMID- 3851789 TI - Whooping cough: helping parents assess the risks. PMID- 3851790 TI - Immunization--reducing the uncertainty. PMID- 3851791 TI - Improving measles vaccine uptake. PMID- 3851792 TI - The school nurse as health educator. PMID- 3851793 TI - Health reviews in nursery school. PMID- 3851794 TI - Know your organizations: the Children's Society. PMID- 3851795 TI - Caring for the health of young children. 1. Using preventive child health services. PMID- 3851796 TI - [Pudendal block--evaluation of the analgesic effects of 3 different local anesthetics]. PMID- 3851797 TI - [Information from the PKU-sections--account of activities 1984]. PMID- 3851798 TI - [A good birth--current goals in Danish obstetric care]. PMID- 3851800 TI - [Report from Fertility Conferences in Karolinska hospital]. PMID- 3851799 TI - [Scholarship report. Various childbirth positions]. PMID- 3851801 TI - [National Social Welfare Board's general recommendations on examination of newborn infants for certain inborn errors of metabolism]. PMID- 3851802 TI - [A study visit to Helsinki]. PMID- 3851803 TI - [National Social Welfare Board's directions and general recommendations concerning AIDS]. PMID- 3851804 TI - [Congenital diaphragmatic hernia]. PMID- 3851805 TI - [Are our methods of temperature measurement in newborn infants reliable?]. PMID- 3851806 TI - [Blood relationship and "milk relationship"--a short study in medical anthropology]. PMID- 3851807 TI - Penicillin-binding proteins and the intrinsic resistance to beta-lactams in gram positive cocci. PMID- 3851808 TI - Protein synthesis in rabbit reticulocytes. A study of the mechanism of Co-eIF-2 action. AB - The characteristics of component activities in Co-eIF-2 (where eIF is eukaryotic initiation factor) protein complex have been studied. (i) At limiting concentrations, Co-eIF-2 promoted rapid GDP binding to eIF-2 and also GDP displacement from eIF-2 X GDP during ternary complex formation in the presence of GTP and Mg2+ (Co-eIF-2C activity) but did not significantly stimulate ternary complex formation by eIF-2. (ii) At higher concentrations, Co-eIF-2 significantly enhanced ternary complex formation by eIF-2 and also rendered the complex stable to aurintricarboxylic acid presumably as Co-eIF-2 became physically bound to the ternary complex (Co-eIF-2A activity). (iii) Ternary complex preformed in the presence of Co-eIF-2 and without Mg2+ dissociated upon subsequent addition of Mg2+ (Co-eIF-2B activity). This dissociation reaction was presumably due to loss of interaction of the Co-eIF-2A component in Co-eIF-2 with the ternary complex (reversal of Co-eIF-2A activity) as the complex became increasingly sensitive to aurintricarboxylic acid with increasing Mg2+ concentration. In another study, purified eIF-2 was freed of bound GDP by treatment with alkaline phosphatase and the characteristics of native and GDP-free eIF-2 were compared. (i) One mM Mg2+ inhibited (60%) ternary complex formation by native eIF-2 but not by GDP-free eIF 2. Addition of exogenous GDP rendered GDP-free eIF-2 sensitive to Mg2+ indicating that Mg2+ inhibition is due to eIF-2-bound GDP. (ii) In the presence of Mg2+, Co eIF-2 stimulated similarly ternary and Met-tRNAf X 40 S X AUG complex formation by both native and GDP-free eIF-2. Such stimulatory activity in each case was strongly inhibited by prior phosphorylation of eIF-2 alpha subunit by heme regulated translational inhibitor. (iii) Ternary complexes preformed using either native and GDP-free eIF-2 and excess Co-eIF-2A80 in the absence of Mg2+ did not form Met-tRNAf X 40 S X AUG complex. They required trace amounts of Co-eIF-2 for such activity. PMID- 3851809 TI - Differentiation of neuroblastoma cells induced by an inhibitor of mevalonate synthesis: relation of neurite outgrowth and acetylcholinesterase activity to changes in cell proliferation and blocked isoprenoid synthesis. AB - Mevinolin, a competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A (HMG CoA) reductase, stimulates neurite outgrowth and acetylcholinesterase (ACE) activity in C1300 (Neuro-2A) murine neuroblastoma cells. Sprouting of neurites began within 4-8 h, before changes in cell proliferation could be detected by [3H]thymidine incorporation or flow cytometry. In contrast, the increase in ACE activity was temporally correlated with suppression of DNA synthesis, which occurred after 8 h. The activity of the membrane marker enzyme phosphodiesterase I was not stimulated by mevinolin. Suppression of protein synthesis with cycloheximide blocked the induction of ACE activity but only partially inhibited neurite outgrowth in the mevinolin-treated cultures. When mevinolin was removed from the culture medium, most of the cells retracted their neurites within 2 h, but ACE activity did not decline until DNA synthesis began to return to control levels after 10 h. Similarly, retraction of neurites in differentiated cells exposed to colchicine was not accompanied by a decrease in ACE activity. DNA histograms suggested that mevinolin arrests neuroblastoma cells in both the G1 and G2/M compartments of the cell cycle. Other cytostatic drugs that arrest cells at different stages of the cell cycle did not cause Neuro-2A cells to form neurites such as those seen in the mevinolin-treated cultures. When incorporation of [3H]acetate into isoprenoid compounds was studied in cultures containing mevinolin in concentrations ranging from 0.25 microM to 25 microM, the labeling of cholesterol, dolichol, and ubiquinone was suppressed by 90% or more at all concentrations. However, significant growth arrest and cell differentiation were observed only at the highest concentrations of mevinolin. Supplementing the medium with 100 microM mevalonate prevented the cellular response to mevinolin, but additions of cholesterol, dolichol, ubiquinone, or isopentenyl adenine were generally ineffective. The cholesterol content of neuroblastoma cells incubated with 25 microM mevinolin for 24 h was not diminished, and protein glycosylation, measured by [3H]mannose incorporation, was decreased only after 24 h at high mevinolin concentration. These studies suggest that the stimulation of neurite outgrowth and the increase in ACE activity induced by mevinolin are independent phenomena. Whereas neurite outgrowth is not related directly to the effects of mevinolin on cell cycling, the induction of ACE is correlated with the inhibition of cell proliferation.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3851811 TI - Prevent social isolation before it starts. PMID- 3851810 TI - The binding of calcium to detergent-extracted rabbit psoas muscle fibres during relaxation and force generation. AB - Rigor complexes between actin and myosin have been shown to cause increased binding of Ca2+ to troponin C. A similar effect of force-generating crossbridges has been suggested as an explanation for the coupling between load and activation which has been observed in skeletal and cardiac muscle. The goal of this study was to test the hypothesis that Ca2+-troponin affinity during crossbridge cycling is load-dependent. Ca2+-binding to detergent-extracted rabbit psoas fibres was measured during ATP-induced force generation and in the relaxed state. To compare Ca2+ binding in the latter two states it was necessary to establish conditions in which ATP-induced force could be regulated independently of free Ca2+ concentration. Such conditions were obtained by the use of either the ATPase inhibitor sodium vanadate or the substitution of MgITP for MgATP as an energy source. This study showed that in the presence of MgATP (or MgITP) the amount of Ca2+ bound to the myofilaments at a given free Ca2+ concentration was independent of the force generated. Thus force per se is not a determinant of Ca2+-troponin affinity. PMID- 3851812 TI - Caring for aging parents: divided allegiances. PMID- 3851813 TI - The physical, the spiritual: can you meet all of your patient's needs? PMID- 3851814 TI - Temporary relocation: is it stressful to your patients? PMID- 3851816 TI - Geropharmacology. Drugs, older adults, and oral health. PMID- 3851815 TI - Growing old in China. PMID- 3851817 TI - Facets of dementia. Do we need special care units for dementia patients? PMID- 3851818 TI - Old man. PMID- 3851819 TI - Expression and regulation of the murine serum amyloid A (SAA) gene in extrahepatic sites. PMID- 3851820 TI - Plasmid transfer and behaviour in Acinetobacter calcoaceticus EBF65/65. AB - At least one plasmid from each of the incompatibility groups B, C, FIV, H2/S, I alpha, I delta, P, W and X was shown to be capable of transfer from Escherichia coli K12 to Acinetobacter calcoaceticus EBF65/65. Transfer was influenced by the presence of pAV2 (thought to encode a restriction-modification system) in the recipient strain; however, not all plasmids belonging to a particular incompatibility group behaved identically. All plasmids were unstable to varying degrees in A. calcoaceticus EBF65/65, but under suitable conditions were capable of transfer to further strains of EBF65/65 and re-transfer to E. coli K12. Of 40 recently isolated trimethoprim R plasmids 31 transferred successfully from E. coli K12 to A. calcoaceticus EBF65/65, but 17 of these 31 required the introduction of a second mobilizing plasmid for re-transfer to occur. PMID- 3851821 TI - Church nursing: a new community health resource. PMID- 3851822 TI - Ethical dimensions of community health: increasing awareness. PMID- 3851823 TI - Clinical management of the lead-poisoned child. PMID- 3851824 TI - Guidelines for the administration of medication in day care centers. PMID- 3851825 TI - Enhancement of community health nursing services to schools. PMID- 3851826 TI - Using a computer data management system to measure hospital staff development productivity. PMID- 3851827 TI - A hospital nursing education manual. PMID- 3851828 TI - Competency-based orientation. An idea that works! PMID- 3851829 TI - Walk a mile in my shoes. PMID- 3851830 TI - Legal accountability through staff development. PMID- 3851831 TI - The skills fair: a revitalized teaching strategy. PMID- 3851832 TI - Educating new labor and delivery room nurses. AB - Nurses who are new to the labor and delivery area need a foundation in maternal newborn theory before beginning clinical practice. A model for a two-week, theory course for nurses orienting to the labor and delivery area is presented. PMID- 3851833 TI - Electronic fetal monitoring. Nursing management defined. AB - During the past decade, electronic fetal monitoring has been used extensively as a method of assessing fetal well-being. The use of fetal monitors has major implications for nurses. Presented are fetal monitoring nursing guidelines, criteria for documentation, and continuing educational programs. PMID- 3851834 TI - Effects of in utero exposure to DES on male progeny. AB - Diethylstilbestrol (DES) was prescribed for almost 30 years by physicians who believed the nonsteroidal synthetic estrogen was beneficial in both the treatment of threatened abortions and the prevention of spontaneous abortions. Toxemia, premature delivery, postmaturity, and stillbirth were said to be significantly reduced in patients who were treated with DES. The consequences of in utero exposure to DES on female progeny have been widely publicized. However, male progeny also suffer the effects of in utero exposure to DES. These effects include epididymal cysts, small penile size, and cryptorchidism. Altered reproductive capacity is suggested by diminished sperm counts and sperm penetration assays. PMID- 3851835 TI - Infant stimulation reassessed. A new approach to providing care for the preterm infant. AB - Developmental intervention is a new method of improving the care of preterm infants. Use of the Assessment of Preterm Infant Behavior (APIB) to determine the current behavioral functioning of an infant and how that information can be used to develop and implement an individualized program of nursing care are described. Three examples of individualized programs developed as a result of assessment are presented. General environmental guidelines for special care nursery procedures, parent involvement, and nurse training are given. PMID- 3851836 TI - Combined mother-infant nursing care. AB - A survey of five Canadian agencies where mother-infant nursing has been implemented found that there is a significant trend toward this concept of care. Agency characteristics, program operational details, the change process, and benefits are examined. Recommendations are made regarding program planning, and the need for more rigorous program evaluation is emphasized. PMID- 3851837 TI - Disposition of ethanol in maternal venous blood and the amniotic fluid. AB - The disposition of ethanol and acetaldehyde in maternal venous blood and amniotic fluid was studied over a time course following ingestion of 0.3 g/kg of ethanol by six healthy pregnant women at 16- to 18-weeks gestation. A time lag occurred in appearance and elimination of ethanol in and from the amniotic fluid when compared with maternal venous blood. Acetaldehyde was present in the maternal venous blood of four subjects but was found in the amniotic fluid in only one subject. Data from this clinical trial can be used by nurses who counsel pregnant women. PMID- 3851838 TI - Writing research reports. AB - The findings of nursing research are of little value unless they are communicated to other nurses and other health professionals. Therefore, writing the research report is an essential component of the research process. This article gives a general guide for the organization and presentation of a research report. For specific rules on style and format, the reader is referred to style manuals and to guides for authors for specific journals. PMID- 3851839 TI - Hypoalbuminemia at diagnosis as a marker for severe respiratory course in infants with cystic fibrosis identified by newborn screening. PMID- 3851840 TI - Invisible veterans. The women who served in Vietnam. PMID- 3851841 TI - Suicidal casework. Assessing nurses' reactions. PMID- 3851842 TI - The evening shift. An occasion for acting out transference phenomena. PMID- 3851843 TI - Physical causes of depression. PMID- 3851844 TI - The pregnant therapist. PMID- 3851845 TI - Policemen and nursing students. Crisis intervention team. PMID- 3851846 TI - Nursing care and treatment of the retarded mentally ill. PMID- 3851847 TI - Life threatening illness. PMID- 3851848 TI - Acylamino boronic acids and difluoroborane analogues of amino acids: potent inhibitors of chymotrypsin and elastase. AB - A series of 1-acylamino boronic acids (IA-VA), analogues of the amino acids phenylalanine, phenylglycine, alanine, valine, and isoleucine, were prepared as potential transition-state inhibitors of the serine proteases alpha-chymotrypsin and elastase, by a boronate homologation reaction. The corresponding difluoroboranes (IB-VB), produced from the boronic acids by treatment with HF, were more easily purified than the boronic acids. Since the difluoroboranes readily hydrolyze in water, they proved to be convenient precursors for the boronic acids. The phenylalanine and phenylglycine analogues I and II were good competitive inhibitors of alpha-chymotrypsin (Ki = 0.3-8 microM), and the alanine, valine, and isoleucine analogues (III-IV) proved to be good inhibitors of elastase (Ki = 0.1-35 microM). On the basis of their high affinity and the tendency of boronic acids to form borate complexes, these acylamino boronic acids may be behaving as transition-state inhibitors. PMID- 3851849 TI - Far-field 2.45 GHz irradiation system for cellular monolayers in vitro. AB - A 2.45-GHz microwave exposure facility was developed for long-term TEM irradiation of cellular monolayers. Culture flasks with cells attached to the inside bottom surface were filled with medium, submerged in a 60 X 60 X 12-cm water bath on the field central axis, and exposed in the far-field 2 m below the ceiling-mounted antenna. A quarter-wave transformer plate increased the power transmitted into the water bath, and treatment temperatures were maintained by closed circulation with an external temperature control reservoir. Power density mapped below the quarter-wave plate indicated uniform TEM fields in the 25 X 25 cm region where flasks were located. With 1 kW of forward power to the antenna, the SAR [W/kg] = 45 exp(-0.607d) where d [cm] is the depth in water at any point within this area. PMID- 3851850 TI - Thermal haemolytic threshold of human erythrocytes. AB - Haemolytic thermal threshold of human erythrocytes has been determined by means of an especially designed microwave apparatus. Temperatures between 50 and 55 degrees C are necessary to produce an initial haemolysis of erythrocytes in the whole blood, while the thermal threshold drops to 37 degrees C for red blood cells suspended in buffered saline. Absorbed energy measurements permit the conclusion that the haemolytic effect is thermal in nature. PMID- 3851851 TI - Comments on Frey's "Data analysis reveals significant microwave-induced eye damage in humans". AB - Frey's critique and analysis of the Appleton-McCrossan and Appleton et al studies were examined. Frey is criticized for: ignoring pooling problems in his chi square test; not analyzing the opacity data in Appleton et al; not analyzing the data on vacuoles and posterior subcapsular iridescence in Appleton and McCrossan and Appleton et al; and failing to do log-linear analysis which is appropriate for the design in the two studies. Application of log-linear tests to the opacity data in both studies leads to the conclusion that subject age was significantly associated with the occurrence of opacities, but, contrary to Frey's conclusion, microwave radiation was not. PMID- 3851852 TI - Teamwork in the office-based surgical center. PMID- 3851853 TI - Diagnosis: diabetic blindness. Your patient needs instruction. PMID- 3851854 TI - Rigid lenses and the astigmatic eye. PMID- 3851855 TI - Assessing ophthalmic signs in patients with AIDS. PMID- 3851856 TI - Burns from contact with wet cement or hardening concrete. PMID- 3851857 TI - [Studies on the intravenous administration of aspoxicillin in the pediatric field]. AB - Fundamental and clinical studies were made on the intravenous administration of aspoxicillin (ASPC) in pediatric field and the following results were obtained. The peak serum concentrations of 15.6-84.0 micrograms/ml were seen immediately after a 1-hour drip infusion of 10-30 mg/kg, there being seen a clear dose response. The half-life was 0.78-1.67 hours and the measurable concentrations were detected in the serum up to 6 hours after administration. The urinary excretion rate was 44.1-78.6% up to 6 hours after drip infusion. Twenty-four patients with acute respiratory tract infection (21 cases), urinary tract infection (3 cases) were treated with ASPC by drip infusion of 50-107 mg/kg/day for 5-15 days and resulted in 100% of good response. S. pyogenes, S. viridans, E. coli, H. influenzae and P. aeruginosa were isolated form the culture of sputum or urine in the patients, and they were all eradicated by treatment with ASPC except P. aeruginosa. No side effects were observed except the elevation of GOT and GPT in 1 case. From the above results, it is concluded that ASPC is one of useful drug for treatment of infections in pediatric field. PMID- 3851858 TI - [Clinical evaluation of aspoxicillin in children]. AB - Aspoxicillin (ASPC), a new penicillin for injection, was evaluated for its efficacy and safety in 29 children with bacterial infection (Table 1), and the following results were obtained. MICs of ASPC to 26 strains of isolated organisms are shown in Table 2. MICs to 4 out of 13 strains of H. influenzae were higher than 6.25 micrograms/ml. MICs to 5 strains of S. pneumoniae were lower than 0.78 microgram/ml and 1 out of 3 strains of S. aureus and 1 strain of E. coli showed higher MICs than 100 micrograms/ml. ASPC was administered in 3 or 4 divided doses at a daily dosage ranging from 21 to 98 mg/kg by 30 minutes drip infusion or intravenous injection to 29 patients (16 cases of pneumonia, 8 cases of tonsillitis, 3 cases of bronchitis, 1 case of urinary tract infection, 1 case of impetigo) and the following clinical results were obtained: excellent; 11 cases, good; 11 cases, fair; 3 cases, poor; 1 case. The overall efficacy rate was 85% (Table 3, 4). No clinical side-effects were observed in any of the patients. Leukopenia was noted in 1 case. Slight elevation of GOT and GPT was noted in 2 cases, and minimal elevation of GOT was observed in other 2 cases (Table 5). These data suggest that ASPC is an useful new antibiotic in the treatment of children with susceptible bacterial infection and may be used as the first choice antibiotic for the treatment of respiratory tract infection in children. PMID- 3851859 TI - [Laboratory and clinical studies on aspoxicillin in the field of pediatrics]. AB - Laboratory and clinical studies were carried out with aspoxicillin (TA-058, ASPC), a new semisynthetic penicillin, in pediatric infectious disease, and following results were obtained. The average serum concentrations of ASPC after intravenous injection were 53.6, 151.2 micrograms/ml at 15 minutes, 28.0, 72.8 micrograms/ml at 30 minutes, 17.6, 43.3 micrograms/ml at 1 hour, 7.0, 19.9 micrograms/ml at 2 hours, 0.3, 1.8 micrograms/ml at 6 hours, when the doses were 20 mg/kg and 40 mg/kg, respectively. The mean half-lives of ASPC in blood after injection were 0.87 hour and 1.1 hours when the doses were 20 mg/kg and 40 mg/kg, respectively. The mean recovery rates in the urine during 6 hours after intravenous injection of 20 mg/kg and 40 mg/kg were 62.0 and 62.8%, respectively. The antibacterial activity of ASPC against clinically isolated organisms was determined. ASPC had good activity against H. influenzae, H. parainfluenzae, S. pneumoniae and S. pyogenes. Thirty-four patients; 26 cases of respiratory tract infections, 6 cases of urinary tract infections, 1 case of bacterial meningitis and 1 case of bacterial lymphadenitis, were treated with 57.0-159 mg/kg daily dose of ASPC for 4-19 days. The rate of satisfactory clinical response was 85.3%. As to side effects, loose stool was observed in 3 cases, slight elevation of GOT & GPT and elevation of platelet were noted, in 2 cases, respectively. All were transient and considered to be minor. PMID- 3851860 TI - [Fundamental and clinical studies on aspoxicillin in the pediatric field]. AB - Fundamental and clinical studies of aspoxicillin (ASPC, TA-058), a new penicillin antibiotic, were performed in pediatric field. Antimicrobial activity MIC of ASPC was compared with that of piperacillin (PIPC), ampicillin (ABPC) and carbenicillin (CBPC) for clinical isolates of S. aureus (24 strains), S. pyogenes (22 strains), H. influenzae (18 strains), E. coli (21 strains) and K. pneumoniae (23 strains). MIC of ASPC against S. pyogenes was distributed in less than 0.39 microgram/ml and this numerical value of MIC was very superior. MIC distributions of ASPC against S. aureus, H. influenzae and E. coli had 2 peaks respectively. It was presumed that the results are due to an existence of beta-lactamase producing strains. The sensitive strains in those were distributed in less than 1.56-12.5, less than or equal to 0.10 and 0.78-3.13 micrograms/ml, respectively, and those numerical value of MIC was superior. While against K. pneumoniae, all strains were distributed in more than 12.5 micrograms/ml and the antimicrobial activity of ASPC was very inferior. ASPC was as active as PIPC and ABPC against S. pyogenes, but more active then CBPC, ASPC was less active against S. aureus than PIPC and ABPC, but more active than CBPC. And ASPC was less active against H. influenzae and E. coli than PIPC, but more active than ABPC and CBPC. Against K. pneumoniae, strains that showed somewhat low numerical value of MIC at only PIPC were observed, but antimicrobial activities of ABPC and CBPC, as well as ASPC were very inferior. Absorption and excretion Serum level and urinary excretion of ASPC in 6 pediatric patients of 4 months to 12 years of age after one shot intravenous injection of 20 mg/kg were examined. The serum mean levels were 51.7 micrograms/ml at 1/4 hour, 38.2 micrograms/ml at 1/2 hour, 22.9 micrograms/ml at 1 hour, 3.0 micrograms/ml at 4 hours and 1.0 microgram/ml at 6 hours after injection, respectively. The mean half-life of serum level was 1.03 hours. The mean urinary levels were 4,646 micrograms/ml for 0-2 hours, 1,773 micrograms/ml for 2-4 hours and 299 micrograms/ml for 4-6 hours. The mean urinary recovery rate within 6 hours after injection was 64.7%. Clinical studies In order to evaluate clinical response, bacteriological response and side effects, ASPC was applied to 28 cases, i.e., 5 cases of acute purulent tonsillitis, 2 cases of acute purulent otitis media, 2 cases of acute bronchitis and 19 cases of acute pneumonia.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3851862 TI - [Clinical studies on aspoxicillin in the field of pediatrics]. AB - Clinical studies were performed as follows on aspoxicillin (ASPC), a new semisynthetic penicillin. ASPC was intravenously given to 12 patients in doses of 57.7-129.0 mg/kg on average) t.i.d. or q.i.d. for 4-7 days (5.7 days on average): 9 with pneumonia, 1 with tonsillitis, 1 with purulent lymphadenitis and 1 with urinary tract infection. The overall efficacy rate was 83.3%, i.e. efficacy was excellent in 8 (66.7%), good in 2 (16.7%), fair in 1 (8.3%) and poor in 1 (8.3%). Bacteriological efficacy was excellent, i.e. 6 of the 6 strains disappeared. No clinical side effects were observed during treatment. Laboratory abnormalities were observed in 3 cases, slight elevation of GOT in 1, slight elevations of GOT and GPT in 1 and mild eosinophilia in 1. The above results suggest that ASPC is an useful antibiotic for treating pediatric bacterial infections. PMID- 3851861 TI - [Clinical and laboratory evaluation of aspoxicillin in the pediatric field]. AB - The authors have carried out the clinical and laboratory evaluation of aspoxicillin (ASPC, TA-058). The results were as follows: Antibacterial activities The susceptibility to ASPC was estimated by plate dilution method on 26 strains each of S. aureus, E. coli, Salmonella and P. aeruginosa and 19 strains of S. marcescens isolated from clinical specimens. Minimum inhibitory concentration (MIC) of ASPC against E. coli and Salmonella was about twice active to compare with ampicillin (ABPC), but MIC of ASPC against S. aureus was two-fold less active than that of ABPC. Antimicrobial activities of ASPC against S. marcescens were similar to that of ABPC, while against P. aeruginosa its activities were two-fold higher than that of carbenicillin. Serum levels and urinary excretions When ASPC was administered at 20 mg/kg by one shot intravenous injection, serum concentration was 75 micrograms/ml after 15 minutes and half life (T 1/2 beta) was 1.65 hours. Urinary excretion within 6 hours after ASPC injection reached to 245.6 mg (26.1%). The reason of this law urinary excretion rate was due to the underlying disease (hydronephrosis). In case of 20 mg/kg administration of ASPC by intravenous drip infusion, peak serum level reached to 88 micrograms/ml at the end of injection, and half-life (T 1/2 beta) was 0.77 hour. Since ASPC degradation by beta-lactamase was proceeded, urinary excretion of this case was not measured by microbiological method. Penicillonic acid and its epimer were detected by HPLC method. It was found that beta-lactamase producing strain was S. marcescens which was isolated by urine culture.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3851863 TI - [Clinical experience with aspoxicillin in the pediatric field]. AB - Aspoxicillin (TA-058, ASPC) was given intravenously to 20 children with the following acute bacterial infections; 11 cases of bronchopneumonia, 5 cases of urinary tract infection, 2 cases of acute bronchitis, 1 case of staphylococcal scalded skin syndrome and 1 case of subcutaneous abscess. Clinical effectiveness was obtained in 14 cases out of 20 cases (70%) and bacteriological eradication in 8 cases out of 10 cases (80%). With ASPC the following side effects developed; transient diarrhea in 1 case, eruption in 1 case and slight elevation of GOT in 1 case. From the above clinical results, it is apparent that ASPC is an useful antibiotic for treating pediatric patients with various kinds of bacterial infections. PMID- 3851864 TI - [Fundamental studies on aspoxicillin in the field of gynecology. Penetration of the drug into the genital organs and the dead space fluid. Antibacterial activity of the drug against various strains of clinical isolates]. AB - A new semisynthetic penicillin aspoxicillin (ASPC, TA-058) has been evaluated in regard to distribution into the genital organs and the dead space fluid and also in regard to antibiotic activity against various strains clinically isolated in the field of gynecology. The pharmacokinetic studies were made by using two compartment model on the data of concentration in ovary, oviduct, endometrium, myometrium, cervix uteri and portio vaginalis of the genital organs and in dead space fluid. The following results were obtained. After one shot intravenous administration of 2.0 g ASPC, no marked difference was observed in concentration pattern between peripheral vein and uterine artery. Half-lives were 1.8 hours and 3.5 hours, respectively. The concentrations in various tissues of genital organs reached to the maximum at 36.2-73.6 micrograms/g during 0.07-0.44 hour with half life varied from 0.53 to 1.3 hours. Area under the curves (AUC) of various tissues were reached to 30-65% of that uterine artery. After 2.0 g administration of ASPC drip intravenously (d.i.v.; for 30 or 60 minutes), there are no remarkable difference on simulation curve of concentration between peripheral vein and uterine artery. The peak level of various tissues attained to 22.5-40.3 micrograms/g during 0.53-0.56 hours and AUC of their concentration achieved about 20-40% of that of uterine artery after intravenous drip infusion for 30 minutes. After intravenous drip infusion for 60 minutes, tissue level reached to the maximum during 1.01-1.82 hours with half-life of 0.65-1.4 hours and AUC of tissue concentration achieved about 20-57% of that of uterine artery. The concentration of the drug in dead space fluid was reached to the maximum at 3.1 hours after the administration and its half-life was 5.3 hours. The in vitro activities of ASPC against clinical isolates were examined. The values of MIC70 and MIC80 were ranged 0.35-5.1 micrograms/ml against S. aureus, S. epidermidis, E. faecalis and P. mirabilis, respectively. Against E. coli, the value of MIC70 was attained 2.9 micrograms/ml, however, the value of MIC80 was more than 100 micrograms/ml due to the two-peaked activity of this drug against the bacteria. AUC and duration time of various tissue concentration were scrutinized regarding to the value of MIC80 of ASPC against S. aureus, S. epidermidis, E. faecalis and P. mirabilis.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3851865 TI - Tolerance to ozone in emphysematous rats. AB - Pulmonary emphysema was induced in rats by a single intratracheal instillation of swine pancreatic elastase. After adequate development of the pulmonary emphysema, the animals were initially exposed to 1.9 ppm ozone for 3 hrs, and 3 days later, challenge-exposed to 5.1 ppm ozone for 3 hrs and immediately sacrificed to investigate the extent of the development of tolerance to ozone judged by the formation of edema. Although the body weights of the pulmonary emphysematous rats were the same as those of the saline-treated control rats, the lung weights of the former were heavier. The extent of the edema formation by ozone and of the tolerance to ozone of the pulmonary emphysematous rats seemed to be quite similar to those of the saline-treated control rats. On the other hand, although the exposure of the saline-treated control rats to 1.9 ppm ozone for 3 hrs resulted in an increase in lung weight without edema 3 days after the exposure, the pulmonary emphysematous rats did not show such a response. PMID- 3851866 TI - [Bedside care of the aged with senile dementia. Direction in the care of the demented patients--care to preserve human dignity]. PMID- 3851867 TI - [Bedside care of the aged with senile dementia. The relationship between the psychiatric state of the patient and the care]. PMID- 3851868 TI - [Bedside care of the aged with senile dementia. Diagnosis and treatment of senile dementia--the care at the department of neurosurgery]. PMID- 3851869 TI - [Bedside care of the aged with senile dementia. Diagnosis and treatment of senile dementia--care at the psychiatric department]. PMID- 3851870 TI - [Bedside care of the aged with senile dementia. Rehabilitation of demented patients]. PMID- 3851871 TI - [Disabilities of senile dementia patients in daily activities and related nursing. Meals]. PMID- 3851873 TI - [Disabilities of senile dementia patients in daily activities and related nursing. Sleep]. PMID- 3851872 TI - [Disabilities of senile dementia patients in daily activities and related nursing. Personal hygiene]. PMID- 3851875 TI - [Nursing of an aged patient with symptoms of postoperative dementia]. PMID- 3851874 TI - [Disabilities of senile dementia patients in daily activities and related nursing. Personal safety]. PMID- 3851876 TI - [Total care of senile dementia. Assistance in the recovery of a patient with a loss of physical functions due to extensive immobilization]. PMID- 3851877 TI - [Total care of senile dementia. Terminal care of the demented patients]. PMID- 3851878 TI - [Home care of patients with senile dementia. The current status of the families of demented patients at home and the role of the nursing profession]. PMID- 3851880 TI - [Home care of patients with senile dementia]. PMID- 3851879 TI - [Home care of patients with senile dementia. Assistance of demented patients at home and support to their families]. PMID- 3851881 TI - [Nursing of refractory nervous system diseases--case studies]. PMID- 3851883 TI - [Clinical chemistry using the saliva--with special reference to its application to the renal function test]. PMID- 3851882 TI - [Treatment of tinnitus]. PMID- 3851884 TI - [Development of the artificial membrane incorporating cells]. PMID- 3851885 TI - [Management of thoracic injuries]. PMID- 3851886 TI - [Management of hyperbilirubinemia of the newborn]. PMID- 3851887 TI - [Nursing of newborn infants with hyperbilirubinemia]. PMID- 3851889 TI - [Urostomy not requiring a catheter]. PMID- 3851888 TI - [Helping families of patients with Alzheimer's disease]. PMID- 3851890 TI - [A circle of communication in patient education]. PMID- 3851891 TI - [Report from the Hawaiian nursing seminar. Changing American nursing]. PMID- 3851892 TI - [Disabilities of senile dementia patients in daily activities and related nursing. Excretion]. PMID- 3851893 TI - [Primary care in pancreatic diseases--diagnosis of pancreatic diseases]. PMID- 3851894 TI - [Current status and problems in the diagnosis of pancreatic cancer]. PMID- 3851895 TI - [Diagnostic criteria of chronic pancreatitis]. PMID- 3851896 TI - [Diagnosis and treatment of acute pancreatitis]. PMID- 3851897 TI - [X-ray CT diagnosis of the pancreas]. PMID- 3851898 TI - [Excision of the pancreatic head and duodenum--surgical technic and postoperative care]. PMID- 3851899 TI - [Management of pain caused by pancreatic lesions]. PMID- 3851900 TI - [Actions and standard of nursing of a patient with acute pancreatitis--an experience with a case associated with respiratory complications and psychiatric symptoms]. PMID- 3851901 TI - [Post-discharge nursing actions directed to a patient following total pancreatectomy]. PMID- 3851902 TI - [Relationship between diseases and food habits in patients with gastrointestinal disorders]. PMID- 3851903 TI - [Nursing of a patient with cancer of the pancreatic head--nursing following excision of the pancreatic head and duodenum. A case study]. PMID- 3851904 TI - [Nursing of a patient with alcoholic pancreatitis]. PMID- 3851905 TI - [Nursing approach to a patient with pancreatic diabetes]. PMID- 3851906 TI - [On the nursing standard in Ravonal therapy of acute cerebral disorders]. PMID- 3851907 TI - [Re-evaluation of the duration of the use of the infusion set--a study on bacterial contamination of the infusion line]. PMID- 3851909 TI - [Mortality in childhood asthma]. PMID- 3851908 TI - [Lithotripsy apparatus using extracorporeal shock waves for the treatment of renal calculi]. PMID- 3851910 TI - [Laser therapy of pharyngeal cancer]. PMID- 3851911 TI - [Orthostatic dysregulation]. PMID- 3851912 TI - [Agents used in the treatment of shock. (1). Cardiac vasoactive agents]. PMID- 3851913 TI - [Problems in social rehabilitation of patients following brain surgery]. PMID- 3851915 TI - [Management of nephrostomy and urostomy catheters]. PMID- 3851914 TI - [Contamination of infusion fluid preparation. (2). The current status and management of the problem]. PMID- 3851916 TI - [Therapeutic effects of diabetes education--evaluation of the diabetes education program]. PMID- 3851917 TI - [Report on the Hawaiian nursing seminar. 2. Home health nursing]. PMID- 3851918 TI - [Dialog: relation between theory and practice]. PMID- 3851920 TI - [Perspectives on nursing theory]. PMID- 3851919 TI - [A model for theory development in nursing]. PMID- 3851921 TI - [Models for nursing]. PMID- 3851922 TI - [The need for a practice theory as indicated by the knowledge used in the conduct of practice]. PMID- 3851924 TI - [Beckstrand's concept of practice theory: a critique]. PMID- 3851923 TI - [A critique of several conceptions of practice theory in nursing]. PMID- 3851925 TI - [The approach to English monograph. Implications and limitations. 2]. PMID- 3851926 TI - [In a corner of the laboratory. 2. "Amae" and self-control]. PMID- 3851927 TI - [For beginners of nursing research. Report: about setting of a standard time of bed making]. PMID- 3851928 TI - [Young public health nurses' attitude toward public health services. Reaffirmation of the professional awareness]. PMID- 3851930 TI - [Young public health nurses' attitude toward public health services. Trials and tribulations of a profession]. PMID- 3851929 TI - [Young public health nurses' attitude toward public health services. Motivation in the profession]. PMID- 3851931 TI - [Young public health nurses' attitude toward public health services. Determination for further effort after one year's experience]. PMID- 3851932 TI - [Young public health nurses' attitude toward public health services. Need for interprofessional cooperation and satisfaction in the performance of duty]. PMID- 3851933 TI - [Group work to learn the importance of independent actions and mutual support by the members--a study of the basis of group activities]. PMID- 3851934 TI - [Positive approach in understanding comprehensive health care to restore humanity: a theory of two-in-one to nurture health personnel with active attitudes]. PMID- 3851935 TI - [A format in health education in regional public health activities--training in self-examination of the breast for the detection of breast cancer]. PMID- 3851936 TI - [Episiotomy and perineal rupture. A study of the healing process]. PMID- 3851937 TI - [10th Scandinavian Congress in Perinatology in Turku, 28-30 August 1985]. PMID- 3851938 TI - [Relief services in Ethiopia]. PMID- 3851939 TI - [Translation from "The Best of Image". Philosophy, science, theory: interrelationships and implications for nursing research]. PMID- 3851940 TI - [Nursing and housekeeping. Current status of domestic science]. PMID- 3851941 TI - [Study on participants of HNA academic assembly]. PMID- 3851942 TI - [Report of ICM conference in Sydney, Australia]. PMID- 3851943 TI - [Workshop for clinical instructors (organized by JNA Tokyo Branch)]. PMID- 3851944 TI - [Nursing and housekeeping. Visiting nursing and "philosophy of household"]. PMID- 3851945 TI - [Nurses helped me to recover from lung cancer]. PMID- 3851946 TI - [Nursing and housekeeping. Ward is home for sick people--from the viewpoint of rehabilitation nursing]. PMID- 3851947 TI - [Nursing and housekeeping. Similarity of nursing science and domestic science]. PMID- 3851948 TI - [Nursing and housekeeping. Learning of "thoughtful consideration" in nursing education]. PMID- 3851949 TI - [Nursing diagnosis. II]. PMID- 3851950 TI - [Verbs and our life: act]. PMID- 3851951 TI - [Spotlight: Miyuki Doi, who provides welfare visits to homebound clients with reasonable service charge]. PMID- 3851952 TI - [Teaching poetry at nursing school. 17. For better imagination training]. PMID- 3851953 TI - [Visiting nursing service in USA. 3]. PMID- 3851954 TI - [Visiting nursing service in U.S.A. 4]. PMID- 3851955 TI - [Evaluation of nursing service administration by system chart]. PMID- 3851957 TI - [Translation from: The Best of Image. The paradoxical nature of nursing research]. PMID- 3851956 TI - [Ministry of Welfare: appointment of nursing system deliberation committee]. PMID- 3851958 TI - [Bitter feeling is sometimes enlightening]. PMID- 3851959 TI - [Provision of information. Patients are well informed in our hospice]. PMID- 3851960 TI - [Provision of information. Physician-patient-nurse relationship based on sharing of information]. PMID- 3851961 TI - [Provision of information. Physician and nurse--do they agree on sharing information with each other and with the patient?]. PMID- 3851962 TI - [Provision of information. Round-table talk: informed patients and better health care]. PMID- 3851963 TI - [Provision of information. In cases of pediatric patients]. PMID- 3851964 TI - [Nursing diagnosis. 2]. PMID- 3851965 TI - [Study on the PHN participants of FNA academic assembly]. PMID- 3851966 TI - [Spotlight: Shigeru Ishimoto, six months as director of Environment Bureau]. PMID- 3851967 TI - [Verbs in our life--weep]. PMID- 3851968 TI - [Teaching poetry at school of nursing. 18. For better imagination]. PMID- 3851969 TI - [Pills and cancer/drug-induced Parkinson's disease]. PMID- 3851970 TI - Continuing education at a community college. PMID- 3851971 TI - Dedicated nurses have fostered Kansas public health. PMID- 3851972 TI - Still the most important factor in public health. PMID- 3851973 TI - Acute to home care: managing the transition. PMID- 3851974 TI - Decreased total and active urinary kallikrein in normotensive Dahl salt susceptible rats. AB - Abnormalities in the kallikrein-kinin system have been found in human and animal models of essential hypertension. The purpose of this study is to assess the kallikrein-kinin system in normotensive Dahl salt sensitive (S) and salt resistant (R) rats on a zero sodium diet. Urinary kallikrein was measured at 7 and 12 wk of age by different techniques. When kallikrein activity was assessed, by a kininogenase assay, S rats excreted 66% (P less than 0.001) and 75% (P less than 0.01) as much kallikrein as R rats at 7 and 12 wk of age. Using an artificial substrate method (Kabi S-2266), S rats excreted 30% (P less than 0.001) and 56% (P less than 0.05) as much kallikrein as R rats at 7 and 12 weeks, respectively. Using a technique to measure total kallikrein, S rats excreted 53% (P less than 0.001) and 65% (P less than 0.05) as much kallikrein as R rats at 7 and 12 wk of age. Normotensive S rats failed to increase maximally kallikrein activity or total kallikrein when the diet was switched from a .4% to a .0064% sodium chloride diet. There was no difference in inhibitors, as measured by the recovery of purified kallikrein added to S and R urine (56 +/- 21% vs. 53 +/- 13%). Km values for S and R urinary kallikrein were similar (3.1 +/- .5 X 10(-5) vs. 2.6 +/- .5 X 10(-5) M/liter). Trypsin-activatable kallikrein was equivalent in the S and R rats on the .0064% and .4% sodium chloride diet.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3851976 TI - An experimental study of the effects of supportive nursing intervention on family support behavior and sick role behavior. PMID- 3851975 TI - The early diagnosis of impending coagulopathies following surgery and multiple trauma. AB - Blood coagulation problems, either disseminated intravascular coagulation (DIC) or adult respiratory distress syndrome (ARDS) are frequent complications during the recovery of the polytraumatized surgical patient or accident victims. The key to their successful control lies in prompt recognition and aggressive treatment of the disease as soon as it appears. Unfortunately their onset is not usually well defined clinically and success in handling usually depends upon clinical expertise in recognising "high risk" situations coupled with measurements in the haematological laboratory of changes in plasma coagulation factors. It is suggested in this communication that a relatively simple examination of plasma complement profiles in the high risk, intensive care patient, may not only provide early warning of the onset of a coagulopathy but also distinguish the type. Simple tests are described, based on the assessment of plasma complement C5 levels, which have a high predictive value for the onset of ARDS, a disease with few early clinical manifestations and notably lacking in early changes in haematological parameters. In prospective trials complement tests correctly identified 18 patients who later developed ARDS but were no more effective than haematological tests in the identification of 24 patients who subsequently developed DIC. PMID- 3851977 TI - [Primary health care in the Sin Nam Community Health Post]. PMID- 3851978 TI - [Infanticide--murder or mercy]. PMID- 3851979 TI - Creative use of college laboratory in nursing education. PMID- 3851980 TI - An experimental study of the effects of sensory stimulation on the low birth weight infant's early growth and development. PMID- 3851981 TI - [Strategies for improving professionalism]. PMID- 3851982 TI - [Basic nursing education system]. PMID- 3851983 TI - [Continuing education system]. PMID- 3851984 TI - [Air correspondence education]. PMID- 3851985 TI - [Open college system]. PMID- 3851986 TI - [Nursing: today and tomorrow]. PMID- 3851987 TI - [New system-distance learning program]. PMID- 3851988 TI - [Role expansion of community nurse]. PMID- 3851990 TI - [Role expansion of community nurse. II. Family nurse practitioner]. PMID- 3851989 TI - [Role expansion of community nurse. I. Community nurse practitioner]. PMID- 3851991 TI - [Role expansion of community nurse. III. School nurse practitioner]. PMID- 3851992 TI - [Role expansion of community nurse. IV. Occupation health nurse practitioner]. PMID- 3851993 TI - [Mission in Ladakh. Working with Tibetan refugees]. PMID- 3851994 TI - [An action group for primary health care]. PMID- 3851995 TI - [The nurse and first aid. A totally different task]. PMID- 3851996 TI - [Do we want to be full-time partners in the field of public health?]. PMID- 3851997 TI - [Health visits. Putting the accent on quality]. PMID- 3851998 TI - [Patient safety. Does one need to change intravenous perfusion delivery systems every 48 hours?]. PMID- 3851999 TI - [Important changes. Medico-ethical directives for the treatment of sterility with fertilization in vitro and embryo transfer (1985 version)]. PMID- 3852000 TI - [Fight against AIDS. First-level information and education]. PMID- 3852001 TI - [The hospice movement. Lovingly taken care of till the end]. PMID- 3852002 TI - [A birth in the Brazilian plains. For the love of God!]. PMID- 3852003 TI - [Transitional care--a nursing concept from Vienna. No fear for brain deterioration in old age]. PMID- 3852004 TI - [Brief lesson in jurisprudence for male and female nurses. 3. Who is to blame for mistakes?]. PMID- 3852005 TI - [After the Montebello process: a work document. 2. Quality of care and professional autonomy]. PMID- 3852006 TI - [5-year experience with sterile and pyrogen-free irrigation solutions in transurethral surgery]. PMID- 3852007 TI - [Truth at the bedside. Shock or aid?]. PMID- 3852008 TI - [Therapy of extensive burns]. PMID- 3852009 TI - [Diagnosis, clinical aspects and therapy of urogenital tuberculosis]. PMID- 3852010 TI - [The computer in the hospital. Problems, goals and examples of application possibilities]. PMID- 3852011 TI - [The significance of radioimmunoassays]. PMID- 3852012 TI - [Clinical aspects and therapy of mucoviscidosis (cystic fibrosis)]. PMID- 3852013 TI - [Life style. Living in a kibbutz]. PMID- 3852014 TI - [Care of tumor patients in the hospital]. PMID- 3852015 TI - [Instruction of student's practice of visiting care]. PMID- 3852016 TI - [Learning of human relation in nursing through experience of encounter group]. PMID- 3852017 TI - [A method to instruct the student in case study of nursing]. PMID- 3852019 TI - [Continuing nursing through telephone consultation]. PMID- 3852018 TI - [Telephone consultation and networking of health care]. PMID- 3852020 TI - [Continuing nursing through telephone consultation]. PMID- 3852021 TI - [Counselor's attitude in telephone consultation]. PMID- 3852022 TI - [Home care in the highly advanced information society]. PMID- 3852023 TI - [A study on the effect of body cleansing on the temperature of anemia patients]. PMID- 3852024 TI - [Humanization of sciences, and women's studies: case of the field of psychology (dialog)]. PMID- 3852025 TI - [STAT: special techniques in assertiveness training for women in the health professions]. PMID- 3852027 TI - Nursing organizations endorse entry. PMID- 3852026 TI - [The role of management affairs on ward nursing of assistant nursing director]. PMID- 3852028 TI - We call it partnership: job-sharing a middle-management position. PMID- 3852029 TI - The nurse--an advocate for the public. PMID- 3852030 TI - Behavioral risks and pregnancy outcome: attitudes and practices of OB/GYNs. PMID- 3852031 TI - Preterm delivery and patient education. PMID- 3852032 TI - "Life-style" factors and pregnancy outcome. PMID- 3852033 TI - Patient motivation during pregnancy. PMID- 3852034 TI - Alcohol and drug use in pregnancy: a case for management. PMID- 3852035 TI - Influencing pregnancy outcome through nutrition and dietary changes. PMID- 3852036 TI - INPUT pledge drive: dollars = political clout. PMID- 3852037 TI - Cost savings through competition. Testimony in support of third party reimbursement for nurses. PMID- 3852040 TI - The community midwife in maternity care. PMID- 3852038 TI - Communicating with your legislators. PMID- 3852039 TI - Where obstetrics fail. PMID- 3852041 TI - Congenital hypothyroidism. PMID- 3852043 TI - "Breath of change". Dame Rosalind Paget memorial lecture. PMID- 3852042 TI - When your patients ask about contraception for the middle years. PMID- 3852044 TI - Neonatal screening with emphasis on congenital hypothyroidism. Sir William Power memorial lecture. PMID- 3852045 TI - Teaching postnatal exercises. PMID- 3852046 TI - The midwifery process--does it work? PMID- 3852047 TI - Supporting bereaved parents: a program for the NICU. PMID- 3852048 TI - The management of the mechanically ventilated infant receiving pancuronium bromide (Pavulon). PMID- 3852049 TI - Examining the issue of tactile stimulation for preterm infants. PMID- 3852050 TI - Use of thrombolytic medications in the neonate. PMID- 3852051 TI - Arterial blood gas sampling (micro method). Policies and procedures. PMID- 3852052 TI - Trauma--but for whom? PMID- 3852053 TI - Computers in nursing. PMID- 3852054 TI - Pressure sores and the orthopaedic traction--yet another skin area to protect. PMID- 3852056 TI - Reliability and validity basics for evaluating classification systems. PMID- 3852055 TI - Time management for the nurse executive. PMID- 3852057 TI - Financing faculty practice: elements of a strategic plan. PMID- 3852058 TI - Becoming an independent consultant: essentials to consider. PMID- 3852059 TI - Public health nurse administrators: coping with competition. PMID- 3852060 TI - Grant budgeting: preparation and management. PMID- 3852062 TI - Nursing--towards the year 2000. PMID- 3852061 TI - Nurse Practitioner Associates for Continuing Education (NPACE). PMID- 3852063 TI - Royal College of Nursing. Ethics of madness. PMID- 3852064 TI - Focus on restraint. PMID- 3852065 TI - Hazardous situation. PMID- 3852067 TI - Royal College of Nursing. AGM action. PMID- 3852066 TI - Tearing nursing's heart out. PMID- 3852068 TI - Call on all nurses to speak out about what is happening with regard to Griffiths. PMID- 3852069 TI - It's time students were granted the rights to be treated as adults. PMID- 3852070 TI - College agrees radical policy on ENs future. PMID- 3852071 TI - Royal College of Nursing. Towards unity. PMID- 3852073 TI - The post-Rayner plight facing homeless nurses today. PMID- 3852072 TI - Think about it--would you like to be a client of the NHS now? PMID- 3852074 TI - Testimony for Hearing on LR140. PMID- 3852075 TI - Nurse-managed gerontological centers. PMID- 3852076 TI - At issue--entry into practice. PMID- 3852077 TI - Moral thinking and government policy: the Warnock Committee on Human Embryology. AB - A parliamentary committee of inquiry was convened in response to growing concern- among the general public and the scientific community--about new techniques in human fertilization and research in embryology. The committee had to enter that jurisprudential minefield, the theoretical relation between morality and the law. When issues arise in which there is no historical tradition, the voice of morality may be genuinely confused and uncertain. But the law, unlike moral opinion, cannot be contradictory; it must be definite, unambiguous, and universally applicable. PMID- 3852078 TI - Cognitive aspects of health survey methodology: an overview. AB - The past 25 years have seen the development of a wide variety of sample surveys dealing with the nature and distribution of illness and disability, and with the utilization of health care services. The sample survey is currently the most widespread and influential instrument for judging the health status of the nation and for guiding health policy. The knowledge, beliefs, and attitudes of survey respondents "subjectively" affect what the survey seeks to "objectively" measure. Even as statistical sampling has been refined, so is it important to reexamine what the cognitive sciences have to offer for survey interview structure and content. PMID- 3852079 TI - Laboratory-based research on the Cognitive Aspects of Survey Methodology: the goals and methods of the National Center for Health Statistics study. AB - The National Center for Health Statistics is embarked on a major project to combine the respective strengths of cognitive psychologists and survey researchers in a common effort to improve the design of survey questionnaires. This methodological research is conducted within the framework of the National Health Interview Survey, the nation's main source of information on the health of civilians. Better quality of such information--from recall to response rates--can aid both scientific inquiry and public policy. PMID- 3852080 TI - Recalling pain and other symptoms. AB - Questions relating to symptoms are an important ingredient in many surveys of health status. Yet, the understanding of mechanisms for the recall of pain, and the cognitive aspects of memory for pain and other symptoms, have eluded investigators. Even within limits imposed by current imperfect knowledge of the physiology of pain, more collaborative research on recall would improve the completeness and accuracy of clinical diagnostic interviews, insurance adjudications, morbidity statistics, and health survey interviews. PMID- 3852081 TI - Interpreting the white blood cell count in the cancer chemotherapy patient. Nursing responsibilities. PMID- 3852082 TI - Preventing hepatitis B. PMID- 3852083 TI - Primary cutaneous cryptococcosis successfully treated with outpatient amphotericin B and 5-fluorocytosine. PMID- 3852085 TI - Appealing to personality types. PMID- 3852084 TI - Amphotericin B extravasation. A case report. PMID- 3852086 TI - Clinical comparison of three volumetric infusion pumps. PMID- 3852087 TI - Home i.v. therapy. A hospital-based program. PMID- 3852088 TI - Comparison of application factors among three brands of transparent semipermeable films for peripheral i.v.s. PMID- 3852089 TI - Preparing for the 1986 credentialing exam. PMID- 3852090 TI - Standards and credentialing. A forum on quality i.v. practice. PMID- 3852091 TI - NITA ... excellence in action. PMID- 3852093 TI - Discharge planning for the home care i.v. therapy patient. PMID- 3852092 TI - Guidelines for caring for the AIDS patient in the home setting. PMID- 3852094 TI - Water regulation in health and renal disease. A review. PMID- 3852095 TI - Expert testimony: preparation and implications. PMID- 3852096 TI - Intermittant i.v. therapy without heparin: a study. PMID- 3852097 TI - A totally implantable central venous system for chemotherapy administration. PMID- 3852098 TI - Common organisms associated with i.v. solutions and cannulas. PMID- 3852099 TI - Marketing and image making. PMID- 3852100 TI - Marketing opportunities for a nursing department in a changing economic environment. PMID- 3852101 TI - Patient care administration: marketing leadership. PMID- 3852102 TI - On the scene: Stanford University. Overview of marketing at Stanford University Hospital. PMID- 3852103 TI - On the scene: Stanford University. Friends of nursing: a unique marketing approach for nursing. PMID- 3852104 TI - On the scene: Stanford University. An evolution of marketing in nursing. PMID- 3852105 TI - On the scene: Stanford University. Nursing newsletters: professional enrichment and positive image. PMID- 3852106 TI - On the scene: Stanford University. The development of a marketing plan for perinatal services. PMID- 3852107 TI - On the scene: Stanford University. Development of a marketing committee. PMID- 3852108 TI - St. Joseph Hospital's marketing strategy: in search of excellence. PMID- 3852109 TI - Exchange behavior in administrative nursing marketing interactions. PMID- 3852110 TI - Marketing: competing through a holistic approach. PMID- 3852111 TI - Marketing nursing: a community medical center perspective. PMID- 3852112 TI - Alternative delivery systems. PMID- 3852113 TI - Products and product-line management in nursing. PMID- 3852114 TI - Marketing continuing education for nurses. PMID- 3852116 TI - Nursing's impact on a business venture. PMID- 3852115 TI - The role of nursing in marketing health care. PMID- 3852117 TI - Encouraging divergent thinking. PMID- 3852118 TI - Mentors and mentoring. PMID- 3852119 TI - The nurse educator: functional role development. PMID- 3852120 TI - Involvement? Write a letter: one curriculum strategy. PMID- 3852121 TI - Assessing your RN students: the portfolio. PMID- 3852122 TI - Nursing as an occupation: the variable of prestige. PMID- 3852124 TI - Theoretical frameworks cited in Nursing Research from January 1974-June 1985. PMID- 3852123 TI - Putting "oomph" into clinical conferences. PMID- 3852125 TI - Self-disclosure and the nurse educator. PMID- 3852126 TI - Informal grievances. PMID- 3852127 TI - Helping students gain confidence through competence. PMID- 3852128 TI - Interpersonal helping behavior of nursing educators. PMID- 3852129 TI - Assisting students with exams. PMID- 3852130 TI - Evaluation of students: intuition is important. PMID- 3852131 TI - Dislodged chest tube. Action stat! PMID- 3852132 TI - Guidelines for running a 12-lead E.K.G. PMID- 3852133 TI - Assessing the newborn from head to toe. PMID- 3852134 TI - Avoiding terms of bewilderment. PMID- 3852135 TI - In planning Mr. Bowen's care, one picture was worth a thousand words. PMID- 3852136 TI - The suicidal teenager. PMID- 3852137 TI - Code drugs (continuing education credits). PMID- 3852138 TI - Conflict: why don't you get along with that co-worker? PMID- 3852139 TI - The incredible, flexible nurse. PMID- 3852140 TI - Physiological changes in adolescence. PMID- 3852141 TI - Psychological adjustment in adolescence. PMID- 3852142 TI - Some common disorders of childhood. PMID- 3852143 TI - Ethical issues in paediatric nursing. PMID- 3852144 TI - Aspects of adolescent plastic surgery. PMID- 3852145 TI - Management of the child with severe anorexia nervosa. A multi-disciplinary approach. PMID- 3852146 TI - Sickle-cell anaemia. PMID- 3852147 TI - A personal experience of ageing. PMID- 3852148 TI - Some international concepts of old age. PMID- 3852150 TI - Old age. Pharmacology. PMID- 3852149 TI - Old age. Accommodation and activity. PMID- 3852151 TI - Brain failure in old age. PMID- 3852152 TI - Sensory loss in the elderly. PMID- 3852153 TI - Biological ageing and screening. PMID- 3852154 TI - Ageing and individuals. PMID- 3852155 TI - Wound care in accident and emergency. The physiology of wound healing. PMID- 3852156 TI - Wound care in accident and emergency. Inadine dressing. PMID- 3852157 TI - The intensive care unit--an overview. PMID- 3852158 TI - Resuscitation. PMID- 3852159 TI - Aortic aneurysm. PMID- 3852160 TI - Acute renal failure: aetiology and emergency treatment. PMID- 3852161 TI - Acute respiratory failure. PMID- 3852162 TI - Coping with child death: a child's view. PMID- 3852163 TI - Is death before birth a non-event? PMID- 3852164 TI - The loss of a baby. PMID- 3852165 TI - Support for staff in a paediatric oncology unit. PMID- 3852166 TI - Care of the dying cancer patient. PMID- 3852167 TI - Stress and coping mechanisms in families of children with cancer. PMID- 3852168 TI - Bereavement. A care study. PMID- 3852169 TI - Bereavement. Staff support. PMID- 3852170 TI - Pain and the post-operative patient. PMID- 3852172 TI - Organ transplantation. Part II. Law for the nurse manager. PMID- 3852171 TI - Building the nursing image: an award of excellence. PMID- 3852173 TI - The effect of peer review evaluations upon critical care nurses. PMID- 3852174 TI - Setting OR's course toward greater productivity. PMID- 3852175 TI - Teaching patients: some basic lessons for nurse educators. PMID- 3852176 TI - Staffing and scheduling: reconcile practical means with the real goal. PMID- 3852177 TI - Adjusting to the new environment. Art & science of management. PMID- 3852178 TI - The nurse and a civil lawsuit. PMID- 3852179 TI - Ambulatory care: a practical way to quality assurance. PMID- 3852180 TI - Ambulatory care: primary nursing brings continuity. PMID- 3852181 TI - Selecting a patient monitoring system. PMID- 3852182 TI - Managing change: same staff, same unit--new role. PMID- 3852183 TI - Regional health care planning: the policies of economic development. PMID- 3852185 TI - Wallowing in the malpractice muddle. PMID- 3852184 TI - Art & science of management. Some basic concepts for the new year. PMID- 3852186 TI - First aid and fruit farming. PMID- 3852187 TI - Everyday hazards--not quite. PMID- 3852188 TI - Three's company. PMID- 3852189 TI - Nursing under stress. PMID- 3852191 TI - What use is occupational health? PMID- 3852190 TI - Case history: an acid fumes hazard. PMID- 3852193 TI - Striking the right balance: EMAS and nurse education. Interview by Michael Bangs. PMID- 3852192 TI - Prevention: the name of the game. PMID- 3852194 TI - Prescription for health. PMID- 3852195 TI - Self-employed: some business aspects. PMID- 3852196 TI - OH in the Third World: problems of analysis. PMID- 3852197 TI - Profile of the occupational health nurse. PMID- 3852198 TI - The OHN's influence on employee attitude and ability to return to work. PMID- 3852199 TI - The Institute of Occupational Health Nursing Education. PMID- 3852200 TI - Crohn's disease--more than a chronic illness. PMID- 3852201 TI - Ergonomics in microelectronic office technology. PMID- 3852203 TI - Perspectives in nursing--1985-1987: based on presentations at the seventeenth NLN biennial convention. PMID- 3852202 TI - [Pathologically weak kininogenesis and the possibility of correcting it (experimental-clinical study)]. PMID- 3852204 TI - Unique features of the collaborative program. PMID- 3852205 TI - Collaborative baccalaureate education for RNs returning to school. PMID- 3852206 TI - The role of nursing administration in facilitating nursing research. PMID- 3852208 TI - Educational and clinical perspectives in alcoholism. PMID- 3852207 TI - Rural nursing and the maldistribution of nurses. PMID- 3852209 TI - International nursing exchange: the United States and China. PMID- 3852210 TI - The future of nursing in the acute-care setting: impact on nursing curricula. PMID- 3852211 TI - The curriculum of the future: adapting to changing demands in community health. PMID- 3852212 TI - Health care technology and the changing health care system. PMID- 3852213 TI - Teaching ethics in the nursing curriculum. PMID- 3852214 TI - Change, challenges, and coalitions: kaleidoscope of nursing and vocational education. PMID- 3852215 TI - Analyzing the effects of prospective payment: questions for nursing. PMID- 3852216 TI - Costing out nursing education: dilemma for nursing schools and nursing services. PMID- 3852217 TI - Building cohesion in nursing's body politic. PMID- 3852219 TI - The great shift: politics at the state level. PMID- 3852218 TI - Nursing's national political agenda. PMID- 3852220 TI - From bedside to White House: the local perspective. PMID- 3852221 TI - Seeking conciliation: strategies for change. PMID- 3852222 TI - Political imperatives for nursing in a stereotyping world. PMID- 3852223 TI - Nurses and patients together: healing the health care system. PMID- 3852225 TI - The wounded healer. PMID- 3852224 TI - High touch in a high-tech future. PMID- 3852226 TI - Video-teleconferencing in nursing. PMID- 3852227 TI - Current research on computer use in nursing. PMID- 3852228 TI - Computer-assisted decision making in the nursing process. PMID- 3852229 TI - Faculty practice: making it work. PMID- 3852230 TI - Joint nursing appointments--a means to an end. PMID- 3852231 TI - Fulfilling the commitment to practice without joint faculty appointments. PMID- 3852232 TI - A model of collaborative education: planning and implementing a collaborative program. PMID- 3852233 TI - Profile of a top-ranked school of nursing. PMID- 3852234 TI - [An analysis of nursing sciences requirements]. PMID- 3852235 TI - Identification of health risk factors among undergraduate university students. PMID- 3852236 TI - A comparison of the communication skills of practising diploma and baccalaureate staff nurses. PMID- 3852237 TI - Injection giving: the effect of time lapse between learning and actual practice on student confidence. PMID- 3852238 TI - Parents of hospitalized chronically ill children: competency in question. PMID- 3852239 TI - We can fashion the future, but what fashion will we choose? PMID- 3852240 TI - Reporting on qualitative and quantitative research: evolving issues and criteria. PMID- 3852241 TI - Responses of families to the treatment setting. PMID- 3852242 TI - Determinants of health promotion activities in nursing clinic clients. AB - Nursing clinic clients' health beliefs, values, and demographic characteristics were analyzed for their impact on health promotion activities. A sample of 175 clients was administered measures of health beliefs, health values, and health promotion activities. The type of health care clients had requested at the clinic for the previous 2 years was categorized as health promotion, illness prevention, health maintenance, or health restoration. Findings included: health value was not related to self-reported health promotion activities or to types of clinic visits; a strong belief in chance was negatively associated with engaging in health promotion activities; a strong belief in powerful others was negatively associated with a high percentage of restoration visits. The combination of beliefs, values, and selected demographic factors accounted for 16% of the variance in health promotion activities and 18% of the variance in the type of health care sought. PMID- 3852243 TI - Breast massage to obtain contraction stress test. AB - A standard contraction stress test (CST) is usually obtained by the intravenous infusion of exogenous oxytocin for 1 to 3 hours. To assess whether breast massage could elicit a CST, 30 high-risk pregnant women between 37 and 44 weeks gestation massaged their breasts with mineral oil for a maximum of 40 to 60 minutes. Of the 21 patients (70%) who met the CST criterion, 15 had at least one spontaneous uterine contraction in the 20 minutes preceding breast massage, p = .05. Thirty three percent of those who met the CST criterion did so within 10 minutes of the start of breast massage, and 95% met the criterion within 40 minutes. Other factors, including weeks gestation, parity, overstimulation, and fetal heart rate deceleration that could reasonably influence the effectiveness of the procedure are discussed. Breast massage appears to be an effective method for meeting the CST criterion. PMID- 3852244 TI - Rhythmic patterning in mother-newborn interaction. AB - Face-to-face, dyadic interaction in term and preterm mother-newborn pairs was examined for a rhythmic pattern at 40 weeks gestational age. Three-minute interaction episodes for each mother-infant pair were recorded on videotape and scored with a dyadic code graded along a dimension of disengagement-engagement. Spectral analysis was used to analyze the data for rhythmicity. A reliable rhythmic structure was found in all dyadic interactions. No significant difference was evident between term and preterm dyads. The findings provide quantitative evidence of rhythmic patterning in dyadic interaction from birth for term pairs and as early as 40 weeks gestation for preterm pairs, which is much earlier than previously reported in the literature. The Dyadic Interaction Code, a new tool for studying the interaction process over time, is described, and a recently reported method of analysis (spectral analysis) for interaction data is applied to mother-newborn behavioral data. PMID- 3852245 TI - Parental network structure and perceived support after birth of first child. AB - Changes in the content and structure of social relationships following the birth of the first child were studied with a nonprobability sample of primiparous couples. Differences between men and women were examined regarding changes in network structure, need for support, satisfaction with available support, access to support from network members, and stress and conflict in relationships with network members. In total, 108 subjects responded to investigator-developed tools during the third trimester of pregnancy, 92 subjects at 5 months postpartum, and 69 subjects at 8 months postpartum. More women than men perceived an increased need for support postpartum, but no differences in satisfaction with available support existed. For men, network size decreased, but the percentage of network members with preschool children, the percentage of members offering emotional support, and the boundary density with wives' networks all increased. Women reported decreased frequency of contact with coworkers, but increased frequency with friends, and, as did fathers, named more members with preschool children. PMID- 3852246 TI - Predicting success in graduate clinical specialty programs. PMID- 3852248 TI - Psychometric evaluation of the Hemodialysis Stressor Scale. AB - This report updates the psychometric information available on the Hemodialysis Stressor Scale. The tool is a 29-item scale that rates the incidence and severity of stressors associated with hemodialysis treatment of end-stage renal disease. Six items are classified as physiologic stressors and 23 as psychosocial stressors. Alpha homogeneity coefficients achieved acceptable standards for reliability. Content validity is demonstrated by the varied sources used to ascertain pertinent items for the scale. Construct validity of the scale was investigated by factor analysis (N = 174). A two-factor solution to evaluate the validity of the physiological-psychosocial dichotomy showed insufficient support for this simplistic dichotomous classification of hemodialysis stressors. A subsequent unrestricted factor solution to explore the multidimensionality of the scale yielded eight factors, but only three were significant, so a three-factor solution was subjected to rotation. The content of the 6 physiological and 9 psychosocial items loading significantly on Factor I characterized this factor as psychobiological; Factor II consisted of 12 psychological and social stressors; Factor III pertained to 8 dependency and restriction stressors. The three-factor solution was seen as the best-fitting solution with this particular data set because it was conceptually clear, informative, and parsimonious. PMID- 3852247 TI - Health beliefs and practices of runners versus nonrunners. AB - Returns of mailed questionnaires from 77 runner and 63 nonrunner respondents showed that runners placed a statistically higher value on health and performed greater numbers of health-related behaviors. Major differences were found in nutrition, exercise, and medical awareness and self-care. No major differences were found in addictive substance use, stress management, or safety practices. A number of concerns regarding runners' health practices were identified, including running while ill or in pain, incidence of injuries, negative feelings when unable to run, neglect of a conscious cool-down period, low weight levels, and a tendency to increase workouts following perceived dietary indiscretions. PMID- 3852249 TI - First trimester nausea in pregnant teenagers: incidence, characteristics, intervention. PMID- 3852250 TI - Concerns of breast-feeding mothers from birth to 4 months. PMID- 3852251 TI - Circadian rhythms: basis for screening for fever. PMID- 3852252 TI - What constitutes a publishable report of instrument development? PMID- 3852253 TI - Planning research studies: an alternative to power analysis. AB - Hypothesis testing is a cumbersome method of statistical analysis and sometimes leads to misinterpretation of results. Whenever possible, it is preferable to design studies and analyze data using estimation procedures. For ANOVA, correlation analysis, regression, and other standard statistical methods, it is possible, and no more difficult, to use estimation procedures. PMID- 3852254 TI - Contraception: you can get it if you really want. PMID- 3852255 TI - Retirement: bad timing. PMID- 3852256 TI - Dreaming of a brighter Christmas. PMID- 3852257 TI - Commons sense. Covered in confusion. PMID- 3852258 TI - Nothing succeeds like success. PMID- 3852259 TI - Behaviour therapy nursing. Horses for courses. PMID- 3852260 TI - Management. Firm foundations. PMID- 3852262 TI - The National Association of Theatre Nurses' 21st annual congress. PMID- 3852261 TI - Uneasy bedfellows. PMID- 3852263 TI - Theatre nursing. Coming up through the ranks. Interview by Laurence Dopson. PMID- 3852264 TI - Budgetary control in the operating theatre. PMID- 3852265 TI - Theatre nursing. Computers in a recovery area. PMID- 3852266 TI - Data protection: caught in the act? PMID- 3852267 TI - Urban health: inner city sickness. PMID- 3852268 TI - Trouble and strife. PMID- 3852269 TI - The new chief nurses: what happened to the chiefs? PMID- 3852270 TI - Undercover research. PMID- 3852271 TI - Immediate care of a stab injury. PMID- 3852273 TI - Memories of a smoker. PMID- 3852272 TI - Primary care: an individual concern. PMID- 3852274 TI - Smoking: a battle won. PMID- 3852275 TI - Isolation procedures in one health district. PMID- 3852276 TI - Are contractors cleaning up? PMID- 3852277 TI - Curtain cell. Interview by Laurence Dopson. PMID- 3852278 TI - Alternative medicine. The laying on of hands. PMID- 3852279 TI - College of health: the consumer's advocate. Interview by Alison Hadley. PMID- 3852280 TI - Home births. 'We have the technology'. PMID- 3852281 TI - Home births. A good delivery. PMID- 3852282 TI - Home births. Midwives, according to Odent. Interview by Pamela Holmes. PMID- 3852283 TI - Home births. A place to breathe. PMID- 3852285 TI - Monitoring sickness at work. PMID- 3852284 TI - You can't please them all. PMID- 3852286 TI - Cytotoxic drugs: their handling and use. PMID- 3852287 TI - Cytotoxic drugs: cabinet security. PMID- 3852288 TI - Geriatric care: introducing nurse preceptors. PMID- 3852289 TI - Mental Health Nursing. Journal of the Psychiatric Nurses Association. PMID- 3852290 TI - Mental Health Nursing. Think tank. PMID- 3852291 TI - Mental Health Nursing. Format for success. PMID- 3852293 TI - Symposium on nursing diagnosis. PMID- 3852292 TI - Mental Health Nursing. Striking the right balance. PMID- 3852294 TI - Self-concept as altered by the diagnosis of cancer. AB - From a review of the literature, it was cited that the severity of the treatment regimens for cancer results in altered self-concept with specific behaviors and emotions occurring after the diagnosis. The purpose of this study was to validate the behavioral and emotional defining characteristics of the psychological construct self-concept as it is altered by the diagnosis of cancer. Defining characteristics were derived from concept analysis and confirmed by a specified patient population. PMID- 3852295 TI - The validation of a nursing diagnosis. A nurse consensus survey. AB - One thousand clinical nurse specialists were surveyed on the validity of currently identified defining characteristics of ineffective coping (individual). Five hundred professionals, responding to the graphic rating scale, ranked the frequency with which defining characteristics of ineffective coping (individual) are exhibited when the diagnosis is present. Few of the officially accepted defining characteristics were perceived to occur with high frequency in clinical practice. PMID- 3852296 TI - Validating a diagnostic label. Knowledge deficits. AB - It is essential to establish some clinical validity for the defining characteristics of the nursing diagnoses proposed to date. The application of one type of descriptive study to the nursing diagnosis of knowledge deficit is presented. Limited clinical support is provided for some defining characteristics, but no critical indicator is identified. PMID- 3852297 TI - Clinical validation of two respiratory nursing diagnoses and their defining characteristics. AB - A model for clinical validation of the respiratory nursing diagnoses of ineffective airway clearance and ineffective breathing pattern is presented. The study showed that critical defining characteristics are associated with and differentiate each respiratory nursing diagnosis. The methodology used can be easily incorporated into regular clinical activities in many settings. PMID- 3852298 TI - Validating the nursing diagnosis of impaired physical mobility. AB - The lack of research-based literature and of research models for validating nursing diagnoses results in some ambiguity in research efforts. Research must, however, move forward if there is to be progress in differentiating nursing and medical diagnostic models and use of nursing diagnoses to improve communication among nurses. Operational definitions of nursing diagnosis terminology are essential to continue work in validating nursing diagnoses, particularly in the clinical setting. The diagnosis impaired physical mobility was found to be an appropriate diagnosis for rehabilitation patients. Continued study and refinement of etiologies and defining characteristics is needed. PMID- 3852299 TI - A pilot study to validate the etiologies and defining characteristics of the nursing diagnosis of noncompliance. AB - A descriptive study was used to examine the defining characteristics of noncompliance as generated by review of the literature and extensive practice. The purpose was to determine (1) the presence of selected etiologies and defining characteristics in individuals; (2) the comprehensiveness of the list for all clinical findings; and (3) nurses' perceptions of the importance of the etiologies and defining characteristics in making the diagnosis of noncompliance. PMID- 3852300 TI - Validation of three respiratory nursing diagnoses. AB - This study addresses the validity of three proposed respiratory nursing diagnoses and related nursing interventions. Results are presented and discussed along with the implications for research, practice, and education. PMID- 3852301 TI - A validation of the defining characteristics of the nursing diagnosis "potential for violence". AB - This descriptive study provides validation for the list of characteristics and etiologic factors that currently define the nursing diagnosis "potential for violence." The study also identifies a new characteristic, those characteristics which are most critical, and suggests grouping characteristics which occur in clusters. PMID- 3852302 TI - Validation of the nursing diagnosis of urinary retention. AB - The literature was reviewed in an effort to find or develop a taxonomy for alterations in urinary elimination. A questionnaire was used to validate defining characteristics of one of these diagnosis. Support for the label was found. Examination of additional labels is useful in differentiating types of incontinence. PMID- 3852303 TI - Memory error. Developing a new nursing diagnosis. AB - It is recommended that memory error, the inability to encode, maintain, or retrieve information, be identified as a nursing diagnosis. Two different types of memory error, forgetting to take a medication at the scheduled time and being unable to remember whether a medication has already been taken, are discussed in terms of nursing diagnosis and intervention. PMID- 3852305 TI - Identity confusion. Nursing diagnoses for adolescents. AB - Research of healthy adolescents was conducted to identify predictive profiles of symptom, personality, and demographic variables. Factor analysis found four symptom factors supportive of nursing diagnoses within Erikson's constructs of adolescent identity confusion. PMID- 3852304 TI - Self-esteem disturbance. AB - Defining characteristics for self-esteem disturbance are examined for inter-rater reliability based on clinical observations and interviews by two clinical specialists. A tentative conceptual model and three distinct types of self-esteem disturbance are proposed for further research based on review of the literature and the clinical data. PMID- 3852306 TI - Impaired communication. A descriptive study. AB - This article presents data from a descriptive study, validating etiologies and defining characteristics for the nursing diagnosis of impaired communication. Implications for nursing research, practice, and education are discussed. PMID- 3852307 TI - The nursing diagnosis of decreased cardiac output. AB - This descriptive study validated the nursing diagnosis of decreased cardiac output in a critical-care population. A cardiac output assessment tool was developed. Nursing interventions associated with decreased cardiac output were identified and classified as independent, collaborative, and dependent. PMID- 3852308 TI - Constipation. Consensual and empirical validation. AB - This article describes the process of consensual and empirical validation used for one nursing diagnosis, constipation. The process is illustrated with a cluster of studies, both qualitative and quantitative. Implications for practice, education, and research are described. PMID- 3852309 TI - Report on hospitals and institutions in Rajasthan. PMID- 3852310 TI - Women's participation in environment education. PMID- 3852311 TI - Breast feeding under special conditions. PMID- 3852312 TI - No substitute to mother's milk. PMID- 3852313 TI - Nursing as a career. PMID- 3852315 TI - Education for health administration in India. 2. PMID- 3852314 TI - Qualities of a good tutor. PMID- 3852316 TI - The pharmaceutical industry: challenge of the twentyfirst century. PMID- 3852317 TI - Humanisation of nursing services. PMID- 3852318 TI - The significance of nurses' notes. PMID- 3852320 TI - Student nurse and the society. PMID- 3852319 TI - Management skills in nursing: a review of TNAI's refresher course. PMID- 3852321 TI - Epidemiology in community health nursing education: fit or misfit? PMID- 3852322 TI - Social resources, health resources, and preventive health behavior: patterns and predictions. PMID- 3852323 TI - Graduate education in public health nursing: evaluation and recommendations. PMID- 3852324 TI - Identifying the salient outcomes of exercise: application of marketing principles to preventive health behavior. PMID- 3852326 TI - Using research in clinical practice: a staff nurse's guide. PMID- 3852325 TI - Research issues: nurses, patients, and products. PMID- 3852327 TI - Solving problems with statistics. PMID- 3852328 TI - Operating room nursing as a scientific discipline: a review of research findings and their implementation. PMID- 3852329 TI - Designing and starting a research project: a case study. PMID- 3852330 TI - Designing and developing a new measuring instrument. PMID- 3852331 TI - Current views of nurses and physicians on cost and quality in the OR/PAR: implications for research and nurse/physician collaboration. PMID- 3852332 TI - Innovations and excellence: perioperative implications of neurosurgical advances. PMID- 3852333 TI - Professional survival tips: obtaining a quality reference letter. PMID- 3852334 TI - Research collaboration or participation: what's the difference? PMID- 3852336 TI - Symposium on computer applications. PMID- 3852335 TI - Antimicrobial treatment of pancreatin. PMID- 3852337 TI - Computer literacy in family medicine. AB - Computer literacy is justified and defined in terms of core knowledge about fundamental problem-solving methods for information processing (not as computer languages, hardware characteristics, and so on). These core principles provide a solid grounding that will remain essentially applicable and valid over time. Some of the most powerful methods are used to create expert systems applications, simulations, and database management systems. PMID- 3852338 TI - Selecting a computer system for a medical practice. AB - Although the risk will always exist that a computer system will be selected that does not adequately meet the needs of a practice, this risk may be minimized when the selection process is done properly. A seven-step approach for selecting an office management system is described, with discussion of major factors to consider and pitfalls to avoid. PMID- 3852339 TI - Decision support systems for the outpatient office. Two examples of medical expert systems. AB - Although definitive decision-making systems remain beyond the scope of present day applications available on the market, effective and efficient decision support systems have been developed and are entering the market place. These systems focus on very specific tasks in limited domains and can be valuable adjuncts in primary care settings. There are also a few large-scale applications with well-defined goals that have proved themselves. It is imperative to validate the organizational support and expertise underlying any expert decision support system. PMID- 3852340 TI - Database management in family medicine. AB - A computerized database will serve a practice well if physicians and staff make their expectations and needs explicit, establish clear database specifications, and use those specifications as the basis for selecting appropriate data management software and computer hardware. Any computerized database management system introduced into a practice should be thoroughly documented, and the process of implementing the system should be planned in advance. Finally, because a practice's information-related needs, expectations, and capabilities change over time, database usage should be reviewed and refined regularly. PMID- 3852342 TI - The computerized genogram. AB - Genograms are used in family therapy and family medicine to assess the family from a systemic perspective. Computerized genograms automate the process and allow the clinician to manipulate data in a number of different ways. PMID- 3852341 TI - Defining the information content of health data systems. AB - Uses of health information systems depend heavily on the background and experiences of those who evaluate the data. Effective collaboration between physicians and system managers can enhance significantly the decision-making and information obtained from these systems. This article describes some methods of collaboration and the current uses of one system developed through collaborative efforts of physicians and system managers. PMID- 3852343 TI - Diabetes home monitoring by telephone data entry. AB - The use of microcomputers to help physicians manage diabetic patients who perform home glucose monitoring is presented. Patients enter blood glucose information directly into an office database from their homes, using the push-button telephone with voice synthesizer prompts. The computer-enhanced organization of this information as well as future possibilities is discussed. PMID- 3852344 TI - Computers in family medicine. Automating outpatient medical practice. AB - The American Academy of Family Practice has been on a 4-year quest for a universal family practice office computer that it can recommend to its membership. Much as individual physicians struggle for computer "literacy," all medical organizations likewise face their own steep learning curve in the attempt to discern their memberships' needs and to provide guidance in meeting them. PMID- 3852346 TI - Evolving roles in the nursing management of pain. PMID- 3852345 TI - Analgesic consultation. PMID- 3852347 TI - Pinch-grasp technique. PMID- 3852348 TI - Nurse midwifery vs. law midwifery. PMID- 3852349 TI - Injection technique: R.N. expert opinion. Case in point: Tripp v. Humana, Inc. (474 So. 2d 88 - AL). PMID- 3852350 TI - Legal case briefs for nurses. MN: nursery unstaffed: brain damage; MI: brachial plexus palsy: jury instruction. PMID- 3852351 TI - Sponge count botched--discovery & silence. Case in point: Simon v. Smith (470 So. 2d 941 - LA). PMID- 3852352 TI - Deplorable nursing care: catastrophic results. PMID- 3852353 TI - When nurse "blows the whistle": termination. Case in point: Watassek v. Mich. Dept. of Mental Health (372 N.W.2d 617--MI). PMID- 3852354 TI - Nurse anesthetist "fills in": disaster. Case in point: Brown v. Dahl (705 P. 2d 781--WA). PMID- 3852355 TI - Valuing our differences. PMID- 3852356 TI - Trends in public attitudes toward legal abortion, 1972-1978. AB - Trends in public attitudes toward legal abortion were analyzed for 1972 and 1978. Data were drawn from seven independent probability samples (N = 10,652) of English-speaking persons 18 years of age or older living in noninstitutional arrangements within the continental United States. Attitudes were derived from responses to six items asking whether it should be possible for a pregnant woman to obtain a legal abortion under six different conditions. Guttman Scalogram Analysis revealed two predominant patterns; approval for all six reasons and approval only for the hard reasons (safeguarding the woman's health, preventing birth of a deformed child, or treating rape). Two major shifts were noted in the level of approval; a considerable increase in 1973 for each reason and a sharp decline in 1978 for all but woman's health and rape. These shifts paralleled the introduction of laws pertaining to abortion. PMID- 3852357 TI - Self-care practices among young adult married women. AB - The purpose of this study was to explore the universal and illness-related, self care activities employed by young adult women. Ninety-six women 20 to 40 years of age kept a daily health diary for 3 weeks in which they reported their regular health care, symptoms experienced each day, and self-care actions in response to symptoms. Women reported a total of 1,140 universal self-care activities over the 3-week period. Vitamin use accounted for over half of the self-care activities, with contraceptive use and prescription medications each accounting for 15% to 20% of universal self-care activities. The women engaged in a total of 464 illness-related, self-care activities. Self-care patterns revealed a variety of self-care measures and coping with symptoms in ways specific to the symptoms. PMID- 3852358 TI - Values of entering nursing students: changes over 10 years. AB - Values of students entering nursing in 1982 were compared with values of those entering in 1972. The Allport-Vernon-Lindzey Study of Values and an Entering Resources inventory were completed by 309 students in 1972 and 161 students in 1982. The 1982 sample scored higher on economic values (p less than .01), but did not differ on the other values. Both groups scored highest on social values with religious values ranking second in 1982 and third in 1972. These findings contrast to studies in the 1960's which found religious values rated highest and economic values rated lowest. PMID- 3852359 TI - Policy perspectives on newspaper reports of nurse strikes. AB - Content analysis was used to study 1980 U.S. newspaper articles about nurse strikes. Multivariate analysis revealed that the 893 nurse strike articles presented a more negative image of the nurse than newspaper articles on other nursing subjects. There were more negative headlines, criticism of nurses, and negative relationships. Desire for higher salaries was the major strike issue reported by newspapers, conveying that nurses are interested in personal economic gain as opposed to quality patient care. Nurse strike articles were more likely to appear in larger circulation newspapers and be about strikes in hospitals rather than other health care settings. The most extensive and favorable press coverage occurred in states were organized labor is concentrated. Policy implications of these findings include the difficulty of using the nurse strike as a labor tactic in states with a strong antiunion press. PMID- 3852360 TI - Perceived job stress, job satisfaction, and psychological symptoms in critical care nursing. AB - This study tested the relationships among perceived job stress, job satisfaction, and psychological symptoms of critical care nurses. A self-administered questionnaire was sent to a sample of 180 critical care nurses from eight hospitals. The results supported the hypotheses that higher levels of perceived job stress are related to lower levels of job satisfaction (r = -.24, p = .001) and to higher levels of psychological symptoms (r = .33, p = .000). These effects remained even when years of experience in nursing and shift were controlled. Item analysis, however, showed that four of the five top-ranking stressors were not related to the outcome measures. A distinction between positive and negative stressors is proposed to explain the pattern of results. PMID- 3852361 TI - The prevalence of hot flash and associated variables among perimenopausal women. AB - A telephone survey of a random sample of 594 perimenopausal women was done to study the prevalence of hot flashes, use of estrogen, age of menopause onset, and, among those subjects experiencing hot flashes, the frequency of occurrence and number of years of hot flashes. The prevalence of hot flashes was 88%. Surgical menopause women had a prevalence rate of 92% and had the highest estrogen utilization rate. The median age of onset for natural menopause women was 49 years. The frequency of occurrence and number of years of hot flash experience was variable across all groups. PMID- 3852362 TI - Effect of exercise on morning stiffness and mobility in patients with rheumatoid arthritis. AB - The effects of evening exercises on arthrographic measures of elastic stiffness, subjective ratings of stiffness, and graphic goniometric measures of mobility were examined in 30 patients with rheumatoid arthritis. Measures were obtained on 2 consecutive mornings, one of which was randomly determined to be preceded by evening exercise. Each morning, elastic stiffness and mobility were measured before and after morning exercise. After the final measurements of elastic stiffness and mobility on the second day, patients compared stiffness on the 2 days. Elastic stiffness and subjective ratings of stiffness were less and mobility was greater when evening exercises were performed (p less than 0.001). The relationships between elastic stiffness and subjective ratings of stiffness indicated that the effect of evening exercise was perceived as greater when elastic stiffness was greater, and 21 patients reported less stiffness with evening exercise (p less than .05). PMID- 3852364 TI - Going beyond the narrative summarization of research findings: the meta-analysis approach. AB - Meta-analysis, a method for summarizing empirical studies, has been advocated in many areas of behavioral research. Expanding on existing literature, this article provides an overview of meta-analysis with particular emphasis on its strengths and limitations. Overall, the quantitative approaches employed in meta-analysis offer many advantages as a literature review procedure. Even if meta-analysis is not adopted as the literature review method, awareness of the issues it raises can improve the traditional narrative summarization approach. PMID- 3852363 TI - Noise in acute patient care areas. AB - This study was designed to describe the level of sound in acute patient care areas. A convenience sample of 25 subjects from four intensive care and two general care units within three hospitals in a large metropolitan area was studied. Continuous decibel levels [dB(A)] and equivalent continuous sound pressure levels [LEQ] were measured for 24 continuous hours. Two 3-hour observations were made to assess the sources of sound, and patients were interviewed to determine their perceptions of sound effects. Continuous high noise levels were found in the larger hospital's open heart recovery room and intensive care units [48.5-68.5 dB(A), 15-minute LEQ], lower levels in the smaller hospital's intensive care units [32.5-57 dB(A)] and varying levels in the general ward areas [34.25-62.5 dB(A)]. Decibel levels generated from equipment reached 90 dB(A) in some instances. Patients' perceptions ranged from content to highly perturbed. Although some sources of noise were not immediately changeable, other were adaptable, preventable, or reducible. PMID- 3852365 TI - Promoting sexual wellness in head-injured patients. PMID- 3852366 TI - Spiritual counseling approaches following brain-injury. PMID- 3852367 TI - ARN membership survey--1984. PMID- 3852369 TI - [Equipment and technic. Perfusion pump (2)]. PMID- 3852368 TI - [Female genital organs (2). Stability of the uterus (1): anatomical highlights]. PMID- 3852371 TI - [Complications of artificial ventilation]. PMID- 3852370 TI - [Artificial ventilation and its indications]. PMID- 3852372 TI - [Weaning from artificial ventilation]. PMID- 3852373 TI - [Principles of artificial ventilation]. PMID- 3852374 TI - [Continuous monitoring of artificial ventilation]. PMID- 3852375 TI - [Severe head injuries "coma, awakening and rehabilitation"]. PMID- 3852376 TI - [Assuming responsibility of a child with head injuries by a care team from the time of awakening to the time of socialization]. PMID- 3852377 TI - [Bronchial specimen collection via transtracheal puncture]. PMID- 3852378 TI - Circuit weight training. A new direction for cardiac rehabilitation. PMID- 3852380 TI - [A support system used in geriatrics]. PMID- 3852379 TI - Iliotibial band syndrome in distance runners. AB - Iliotibial band syndrome was diagnosed in 48 of 1030 runners treated for lower extremity musculoskeletal complaints. Most athletes had been running 20 to 40 miles a week for one year or longer and had significantly changed their distance, speed, terrain, surface, and/or shoes before the onset of symptoms. Symptoms often persisted for 2 to 6 months. All runners were treated conservatively with rest, stretching, reduced distance, anti-inflammatory medications, local cortisone injections and/or orthoses. PMID- 3852381 TI - [Acute dehydration in infants]. PMID- 3852382 TI - [The hospital department: simplified method of utilization]. PMID- 3852383 TI - [Video: a choice tool]. PMID- 3852384 TI - [Once upon a time... the Green House]. PMID- 3852385 TI - [A pharmacist at the bedside? To do what?]. PMID- 3852386 TI - [Development of a feeling of confidence in the nurse-patient relationship]. PMID- 3852387 TI - [Hand contact in the nurse-patient relationship]. PMID- 3852388 TI - [The married couple in the climacteric--a nursing orientation]. PMID- 3852389 TI - [Implementation and expansion of family planning services: questions and controversies]. PMID- 3852390 TI - [Comparison between the nursing theories of Horta, King, Rogers, Roy and Orem]. PMID- 3852391 TI - [Nursing care of patients with the manifestations of an emotional disorder admitted to a medical surgical unit]. PMID- 3852392 TI - [Societal rejection of the epileptic and its consequences for his self-esteem]. PMID- 3852393 TI - [Sexual orientation for children and adolescents: a proposal for the training of nurses as sex educators]. PMID- 3852394 TI - [The nurse: security for the patient, investment for the hospital]. PMID- 3852395 TI - [Experience with training in the intestinal irrigation of a female colostomy patient]. PMID- 3852396 TI - [Humanization of the care in intensive care units]. PMID- 3852397 TI - [Primary health care and the practice of nursing]. PMID- 3852398 TI - [Nursing care for pregnant women with emphasis on their mental health]. PMID- 3852399 TI - [Supervision and nursing]. PMID- 3852400 TI - [Parental participation in the care of the hospitalized child--the attitude of Recife nurses]. PMID- 3852401 TI - [Analysis of the records of the activities of the nursing personnel in hospital outpatient clinics]. PMID- 3852402 TI - [Observation of the behavior of children and adolescents hospitalized in a psychiatric unit]. PMID- 3852403 TI - [Nursing care center: the outline and implementation of a community extension service]. PMID- 3852404 TI - [Sengstaken tube]. PMID- 3852405 TI - [Importance of proteins in our nutrition]. PMID- 3852407 TI - [Experience in integrating theory and practice in nursing studies]. PMID- 3852406 TI - [The nursing history of an AIDS patients]. PMID- 3852408 TI - [Sex education in the work of nursing? A brief consideration]. PMID- 3852409 TI - [Profile analysis of nursing students by means of Cattell's test]. PMID- 3852410 TI - [Maternal attitude before pregnancy and its possible relationship in the educational psychology process of the child]. PMID- 3852411 TI - [Nursing in the communication media. Staff of the radio program Countdown. The Spanish radio network. The autonomous community of the Canary Islands]. PMID- 3852412 TI - [Nursing attitudes that promote or hinder adequate patient care]. PMID- 3852413 TI - [Nursing care for cancer patients undergoing chemotherapy]. PMID- 3852414 TI - [Group technics and their application to the teaching of the nursing sciences]. PMID- 3852415 TI - Dealing with the doctor who abuses drugs. PMID- 3852416 TI - Fever: when to worry about it. PMID- 3852417 TI - Fever in children. PMID- 3852418 TI - When childbirth is a family affair. PMID- 3852419 TI - How to teach patients to monitor blood glucose. PMID- 3852420 TI - The agonizing nights that led me into nursing. PMID- 3852421 TI - I'll never take bladder catheters for granted again. PMID- 3852422 TI - Nursing pay: how part-timers are doing. PMID- 3852423 TI - A simple way to calculate IV and IM doses. PMID- 3852424 TI - How a communications breakdown can get you sued. PMID- 3852425 TI - The BSN dispute will destroy nursing! PMID- 3852426 TI - Can vitamins cure your psych patient's symptoms? PMID- 3852428 TI - Nursing in Ghana. Interview by Leslie Cole. PMID- 3852427 TI - Our safety net keeps patients from falling. PMID- 3852429 TI - Poverty is more than being poor. Interview by Peggy Wysong. PMID- 3852430 TI - [Antalvic]. PMID- 3852432 TI - [Autonomous hemodialysis]. PMID- 3852431 TI - [Hemodialysis in a center. Apropos of a case report]. PMID- 3852433 TI - [Continuous ambulatory peritoneal dialysis. A new method]. PMID- 3852434 TI - [Principles of, methods and care in CAPD]. PMID- 3852435 TI - [From renal insufficiency to dialysis]. PMID- 3852436 TI - [Role of the nurse in CAPD]. PMID- 3852437 TI - [Social security in renal insufficiency]. PMID- 3852438 TI - [Peritoneal dialysis. Case report]. PMID- 3852439 TI - [Round-table discussion. Modern woman and her body]. PMID- 3852440 TI - [The classical method: hemodialysis. Basis and materials]. PMID- 3852441 TI - [Vivalan]. PMID- 3852442 TI - [Difficult adolescents]. PMID- 3852444 TI - [Unemployment and mental health]. PMID- 3852443 TI - [Trying to prevent mental disorders?]. PMID- 3852445 TI - [Pathology of transplantation]. PMID- 3852446 TI - [Mental health and elderly persons]. PMID- 3852448 TI - [Resumption of contact with the environment after a loss of consciousness]. PMID- 3852447 TI - [The general concept of mental hygiene]. PMID- 3852449 TI - [A social madness?]. PMID- 3852450 TI - [Survivor of a whirlpool: anorexia nervosa]. PMID- 3852451 TI - [Prevention of mental disorders in young children]. PMID- 3852452 TI - [Patient having had a coronariography. Equipment and nursing care]. PMID- 3852453 TI - [Preparation and care of the patient at the time of vascular radiologic studies]. PMID- 3852454 TI - [Radiologic diagnosis of obliterative arteritis of the lower limbs]. PMID- 3852455 TI - [Medical treatment of obliterative arteritis of the lower limbs]. PMID- 3852456 TI - [Physiopathology of obliterative arteritis of the lower limbs]. PMID- 3852457 TI - [Life style and habits of the patient with arteritis. Ecology of obliterative arteritis of the lower limbs]. PMID- 3852458 TI - [Pre and postoperative care in obliterative arteritis of the lower limbs]. PMID- 3852459 TI - [Indications and surgical technics in obliterative arteritis of the lower limbs]. PMID- 3852460 TI - [Role of the circulating nurse in vascular surgery]. PMID- 3852461 TI - [M.B.'s arteritis. Case report]. PMID- 3852462 TI - [Physical examination of a patient with possible obliterative arteritis of the lower limbs]. PMID- 3852464 TI - [Home hospitalization and social service]. PMID- 3852463 TI - [High-risk pregnancies in home hospitalization]. PMID- 3852465 TI - [Home hospitalization in pediatric surgery]. PMID- 3852466 TI - [The child with respiratory insufficiency in home hospitalization]. PMID- 3852467 TI - [The diabetic child and insulin therapy at home (insulin therapy via portable pump)]. PMID- 3852468 TI - [Diseases cared for by pediatric home hospitalization. 1984]. PMID- 3852469 TI - [Endometriosis and sterility]. PMID- 3852470 TI - [Treatment of endometriosis]. PMID- 3852471 TI - [Woman and caretaker... why?]. PMID- 3852472 TI - [Round-table discussion. Infant nutrition and hygiene]. PMID- 3852473 TI - [Caretaker-client and home hospitalization]. PMID- 3852474 TI - [Experiences from professional nursing counseling]. PMID- 3852475 TI - [Educational exchange: nurses from Gaustad on a French visit]. PMID- 3852476 TI - [War/crisis preparedness in our hospital]. PMID- 3852477 TI - [Norwegian Nurses' Association and the expanded cooperative agreement with the Labor Federation]. PMID- 3852478 TI - [Salary for Norwegian Nurses' Association's own representative]. PMID- 3852479 TI - [Future nursing. Is there room for older colleagues?]. PMID- 3852480 TI - [Circumcision--accepted abuse?]. PMID- 3852481 TI - [Danish voice: that is why I had to travel from Finnmark. Interview by Erik R. Selmer]. PMID- 3852482 TI - [ADP in health services: Nurse?! Can you run a printout for me, please!!]. PMID- 3852483 TI - [Council for nursing education. No to abbreviated nursing education]. PMID- 3852484 TI - [The health manpower situation in northern Norway]. PMID- 3852485 TI - [Minority groups and preventive health services]. PMID- 3852486 TI - [Nursing homes' place in community health services]. PMID- 3852487 TI - [Te-Ve-Busk Construction health service: a mobile health facility]. PMID- 3852488 TI - [Community health regulations--an eviction mechanism?]. PMID- 3852489 TI - [Nursing counseling--do we need it?]. PMID- 3852490 TI - [2-year nursing education for nursing assistants]. PMID- 3852491 TI - [Patient role and sex]. PMID- 3852492 TI - [Integration of somatic medicine and psychiatry]. PMID- 3852493 TI - [ILO conference: Norway oil wants reduction in occupational health services]. PMID- 3852494 TI - [India--3 physicians per nurse]. PMID- 3852495 TI - [Nursing home patients with senile dementia]. PMID- 3852497 TI - [Nursing's foundation--knowledge or qualifications?]. PMID- 3852496 TI - [From geriatric ward B, Ulleval hospital: senile dementia and primary nursing care]. PMID- 3852498 TI - [Nordland's project: protective units--suitable proposal for patients with senile dementia]. PMID- 3852499 TI - [Medical technological equipment is our everyday work]. PMID- 3852500 TI - [Nationwide study shows: continued great need for nurses]. PMID- 3852501 TI - [Nursing services in Haukeland hospital]. PMID- 3852502 TI - [From a refugee camp under siege--nursing in extreme circumstances]. PMID- 3852503 TI - [After the national conference: change in direction in the Norwegian Assistant Nurses' Society?]. PMID- 3852504 TI - [Health visiting. Mother groups as self-guiding social networks]. PMID- 3852505 TI - [Standard nursing could mean poor conditions for children's families]. PMID- 3852506 TI - [One has the right to remain anonymous in the psychiatric casualty ward]. PMID- 3852507 TI - [Practice places outside of the students' field of work]. PMID- 3852508 TI - [Tough conditions for and unreasonable demand for student nurses]. PMID- 3852509 TI - [A problem which should be regarded as an unbelievable paradox]. PMID- 3852510 TI - [Geriatrics. The elderly prove that they can function in their own home. Interview by Ulla Danielsen]. PMID- 3852511 TI - [Psychotherapy. Nursing and therapy both aim for optimal health]. PMID- 3852512 TI - [The concept of need in health visiting]. PMID- 3852513 TI - [Executive Board. Negotiation results go through when ink is scarcely dry]. PMID- 3852514 TI - [Psychiatry. Treatment surrounds psychopathy with reservation]. PMID- 3852515 TI - [Health. A good old age starts in the school years]. PMID- 3852516 TI - [Pain treatment. Anamnesis and examination of cancer pain]. PMID- 3852517 TI - [Pain treatment. The incidence of chronic pain in cancer patients]. PMID- 3852518 TI - [Pain treatment. Methods of measuring pain in cancer patients]. PMID- 3852519 TI - [Pain treatment. Radiation treatment of chronic cancer pain]. PMID- 3852520 TI - [Pain treatment. Epidural treatment of cancer pain]. PMID- 3852522 TI - [Pain treatment. Nurses ought to assume an active role]. PMID- 3852521 TI - [Negotiations 85. The improvements obtained for nurses]. PMID- 3852523 TI - [Dangerous to condemn an entire profession for being inactive]. PMID- 3852524 TI - [Nursing schools should reinforce the fight against apartheid]. PMID- 3852525 TI - [Criticism against our interference doesn't make sense]. PMID- 3852526 TI - [Extensive Danish participation in the ICN Congress]. PMID- 3852527 TI - [Psychiatry. Augusrenborg--a place with good development and fruitful team work]. PMID- 3852528 TI - [Psychiatry. New ideas replace old habits and fear at Augustenborg. Interview by Hell Kastholm Hansen]. PMID- 3852529 TI - [Close cooperation can improve prevention]. PMID- 3852530 TI - [Short-term stay needs changes in nursing care]. PMID- 3852531 TI - [Agreement on more educational places has not been observed]. PMID- 3852532 TI - [Will our leaders report strikes?]. PMID- 3852533 TI - [An illogical camouflage of infection danger]. PMID- 3852534 TI - [Psychiatry. We are at the margin with Amnesty's torture regulations]. PMID- 3852535 TI - [Psychiatry. The Karin case can be use to get politicians to speak]. PMID- 3852536 TI - [ADP experiences from England are useful for Danish nursing]. PMID- 3852537 TI - [Utilize possibilities for safety at the work place]. PMID- 3852538 TI - [Own home or nursing home--decided by whom?]. PMID- 3852539 TI - [Report on health visiting incorrect]. PMID- 3852540 TI - [Important to enter into a discussion with politicians]. PMID- 3852541 TI - [Guidelines for health visiting system revised]. PMID- 3852543 TI - [Youth is the world's best resource]. PMID- 3852542 TI - [Confidence and safety are prerequisites in aid to torture victims]. PMID- 3852544 TI - [Health assistants and nurses in team work for WHO's purposes]. PMID- 3852545 TI - [Independent communities are a breach with the system employed as usual]. PMID- 3852546 TI - [Executive Board. Desired renovations block off nursing shortage]. PMID- 3852547 TI - [Unshaded report on health visiting is without perspective]. PMID- 3852549 TI - [Ethics in medical technology should be discussed]. PMID- 3852548 TI - [Belts are enough protection, but always restraint]. PMID- 3852550 TI - [Bedsore treatment with the greatest possible chance to avoid a new ulcer]. PMID- 3852551 TI - [State of the blood prekallikrein-kallikrein system in patients with glomerulonephritis as affected by pathogenetic therapy]. AB - A study was made of the effect of the treatment with glucocorticoids (GC), cyclophosphamide and indocide on the prekallikrein-kallikrein system (PKKS) of the blood in 108 patients with glomerulonephritis. It was revealed that in patients with acute and chronic GN, the PKKS was activated before treatment. The PKKS activation was marked by a decrease in the content of prekallikrein and elevation of the alpha 2-macroglobulin content, particularly in patients with the nephrotic syndrome. The efficacy of GC therapy was more pronounced the higher the basic activation of the PKKS. The clinical effect of indocide and cyclophosphamide did not depend on the initial characteristics of the PKKS. PMID- 3852552 TI - Antibodies to human plasma kallikrein from egg yolks of an immunized hen: preparation and characterization. PMID- 3852553 TI - [Attention for attention]. PMID- 3852554 TI - [The introduction of work management in a nursing unit]. PMID- 3852556 TI - [Part-time work among nurses and nursing assistants]. PMID- 3852555 TI - [Child and hospital. Manifest as handle]. PMID- 3852557 TI - [Sexuality and intimacy in the general hospital]. PMID- 3852558 TI - [Consultative psychiatric nursing]. PMID- 3852559 TI - [On medical pedagogics]. PMID- 3852560 TI - [Unit-connected testing of nursing activities. A method for quality control and promotion]. PMID- 3852561 TI - [Osteoporosis and its consequences]. PMID- 3852562 TI - [The art of plain talk. The psychiatric nurse in conversation]. PMID- 3852563 TI - [Relating to persons with a hearing aid]. PMID- 3852564 TI - [Optimizing of the utilization of nurses. Quality and costs]. PMID- 3852565 TI - [Totally implantable access systems for chemotherapy]. PMID- 3852566 TI - [More elderly persons in the services for mentally retarded. Is personnel in mental retardation services oriented towards the increase in older mentally handicapped?]. PMID- 3852567 TI - Hyaline membrane disease of the premature. PMID- 3852568 TI - [Patients' experiences of a stay in a nursing home]. PMID- 3852569 TI - ["Mens sana in organizatione sana"--e healthy soul in a healthy organization]. PMID- 3852570 TI - [Measuring and improving of quality nursing care]. PMID- 3852571 TI - [Patients with senile dementia--stepchild of treatment apparatus? A study of how senile dementia patients' living situation can be improved through goal-directed nursing organized as primary nursing care]. PMID- 3852572 TI - [Homelike environment in long-term institutionalized care for the elderly]. PMID- 3852573 TI - [Health care developments internationally and in Sweden]. PMID- 3852574 TI - [Levels of kallikrein, plasmin and thrombin precursors and the activity of their inhibitors in hypertension patients]. PMID- 3852575 TI - [We must strike for better conditions even though we are civil employees. Interview by Anita Widen]. PMID- 3852576 TI - [Employers gave in to demands. Nurses get back termination notices. Interview by Jan Thomasson]. PMID- 3852578 TI - [Holidays, sweet holidays... ]. PMID- 3852577 TI - [SSF (Swedish Nurses' Association) yesterday. Cooperation with the SHSTF (Swedish Association for Health Care and Nursing Employees) means a lot. Interview by Jan Thomasson]. PMID- 3852579 TI - [Women with 10 years experience get the same salary as a newly-appointed man. Sex discrimination maintains SHSTF]. PMID- 3852580 TI - [Changes in health and nursing services. How are health care managers affected?]. PMID- 3852581 TI - [Still a lot of accidents and near-accidents with hospital equipment. Vague about responsibility--this is how it should be]. PMID- 3852582 TI - [Day of ignomy when the government dictates wages. Interview by Anita Widen]. PMID- 3852583 TI - [No complete unity without laboratory assistants]. PMID- 3852584 TI - [Resolution at quiet congress: fewer representatives and longer periods]. PMID- 3852585 TI - [Margareta Wallman, former chairwoman on the midwifery association: social service nursing provides abundant opportunities to travel, study and teach. Interview by Anita Widen]. PMID- 3852586 TI - [Gunilla says 'no' to new nurse's role]. PMID- 3852587 TI - [SHSTF's lawyer writes on liability: this implies your professional liability]. PMID- 3852588 TI - [Hospital hygiene is an important area. This is chiefly a question of change in attitude]. PMID- 3852590 TI - [Summer 1985 was the worst in a long time]. PMID- 3852589 TI - [SHSTF's lawyer writes on liability: did Kerstin do the proper procedure?]. PMID- 3852591 TI - [Nurse in Teneriffe--dream job for Lena from Nacka. Interview by Agneta Riddar]. PMID- 3852592 TI - [Stig Wallin, regional SHSTF's representative--great risk that professional work will formalize for many]. PMID- 3852593 TI - [Quota group classification still irritating, but no changes in sight. Interview by Viveka Holmertz]. PMID- 3852594 TI - [Private or public? Serious fighting about Scania's ambulances]. PMID- 3852595 TI - [Gunilla says 'no' to new nurses' role]. PMID- 3852597 TI - [Occupational Welfare Board changes its mind. Now Ann can remain an occupational health nurse. Interview by Inger Lernevall]. PMID- 3852596 TI - [Directly from the heart--"with reference to the telephone and patients"]. PMID- 3852598 TI - [Results of local negotiations in Uppsala: all nurses remain ward managers]. PMID- 3852599 TI - [Who is responsible in a department?]. PMID- 3852600 TI - [SHSTF in statement on concept of death. No to introduction of "brain death"]. PMID- 3852601 TI - [Angry assistants demand licensure. Interview by Inger Lernevall]. PMID- 3852602 TI - [Ingela works in well care in nuclear power plant. Interview by Viveka Holmertz]. PMID- 3852603 TI - [Gunilla says 'no' to the new nurses' role]. PMID- 3852604 TI - [Questionnaire before general election on September 15. Parties' opinions on health and nursing services]. PMID- 3852605 TI - [Logbook on computers: easy to get--hard to comprehend. Interview by Viveka Holmertz]. PMID- 3852606 TI - [Nurses' own cancer consultation. Interview by Inger Lernevall]. PMID- 3852607 TI - [Various implications to attain "health for all by the year 2000"]. PMID- 3852608 TI - [Libraries are important but quality changes]. PMID- 3852609 TI - [This is how it goes when the Liability Committee reviews a case]. PMID- 3852610 TI - [The new education in Norway not sufficient]. PMID- 3852611 TI - [Social Welfare Board: assistants do not get licensure]. PMID- 3852612 TI - [Obesity is a serious health risk: Hjordis research important for many. Interview by Anita Widen]. PMID- 3852613 TI - [Computers spirit away distances. Interview by Viveka Holmertz]. PMID- 3852614 TI - [How will we get properly trained nurses in psychiatry? Answer: administrators should stimulate to continuing education and give economic support]. PMID- 3852615 TI - [It remains exactly as before--Summer 1985 a tough job for SHSTF's members]. PMID- 3852617 TI - [Why do we slander each other?]. PMID- 3852616 TI - [Runa's work in Zimbabwe is entirely different from job in Academia. Interview by Stefan Lundstrom]. PMID- 3852618 TI - [Personnel wrote Social Welfare Board: stop overcrowding]. PMID- 3852619 TI - [Kerstin, peace-activist school nurse: we can improve the world with light picture. Interview by Ulla Tengling]. PMID- 3852620 TI - [It is natural that the Social Welfare Board is often in hot air. Interview by Janne Berglund]. PMID- 3852621 TI - [Resistance against research in education is a myth. Interview by Viveka Holmertz]. PMID- 3852622 TI - [SHSTF goes along with ISAK (Isolation South Africa Committee) and makes history]. PMID- 3852623 TI - [English changing of the guard in the professor's chair]. PMID- 3852625 TI - [My everyday psychiatric ethics]. PMID- 3852624 TI - [Care planning with computers: let no computer dictate decisions to you]. PMID- 3852626 TI - [Diary from Afghanistan. The surgery has just opened--here come the bombers]. PMID- 3852627 TI - [Torture's wounds must heal from within]. PMID- 3852628 TI - [Nurse's role: never interrogate, harass or frighten a torture victim. Interview by Anita Widen]. PMID- 3852630 TI - [Shift work time a great problem for many]. PMID- 3852629 TI - [You can forget your theater tickets, you have to work this evening.... Interview by Viveka Holmertz]. PMID- 3852631 TI - [Dialysis judgement appealed. Interview by Viveka Holmertz]. PMID- 3852632 TI - ["A human being is a unit--body and soul belong together". Nurses are important in open mental health care. Interview by Jan Thomasson]. PMID- 3852633 TI - [After introductory round: foundation schools will remain]. PMID- 3852634 TI - [Do independent districts settle for primary care nurses? We doubt it says personnel]. PMID- 3852635 TI - [Do independent districts settle for primary care nurses? Yes, obviously, says district council. Interview by Viveka Holmertz]. PMID- 3852636 TI - [Aid for professional education in Kenya. As TCO (Central Organization for Salaried Employees) member you are paying 20 ore]. PMID- 3852637 TI - Timentin in the treatment of symptomatic complicated urinary tract infections in adult patients. AB - The safety and effectiveness of Timentin were evaluated in 34 adult patients with symptomatic complicated urinary tract infections, principally due to multiply drug-resistant bacteria. Although a wide variety of organisms, particularly gram negative bacilli, were found, Escherichia coli was the most frequent, accounting for 14 of 45 (31 percent) pathogens isolated. Ten (22 percent) isolates were Pseudomonas aeruginosa; 11 (24 percent) were Proteus or Morganella species; three (7 percent) were Citrobacter; one (2 percent) was Klebsiella pneumoniae; two (4 percent) were Staphylococcus aureus; and two (4 percent) were enterococci. Ninety three percent of all pathogens isolated produced a beta-lactamase. Eight (24 percent) infections were polymicrobial; seven (21 percent) were associated with bacteremia. Clinical improvement occurred in 30 of 34 (86 percent) patients. All bacteremias were cured. Although bacteriologic cure occurred in only 32 percent of patients, control of sepsis and temporary eradication of bacteria (bacteriologic improvement) occurred in 96 percent. Not surprisingly, the rates of relapses and reinfections were high. It was concluded that Timentin is a useful agent in the management of complicated urinary tract infection and offers clinicians an alternative to more toxic antibiotics, such as aminoglycosides. PMID- 3852638 TI - Out of control. PMID- 3852639 TI - How is the air-fluidized bed best used? PMID- 3852640 TI - The ostomy. 2. What can go wrong. PMID- 3852641 TI - The ostomy. 2. What about special procedures? PMID- 3852642 TI - A prudent pulmonary rehab program. PMID- 3852643 TI - A patient's best friend. PMID- 3852644 TI - Florida: AJN jobfocus. PMID- 3852646 TI - Walking improves balance, reduces falls. PMID- 3852645 TI - Single mothers' perceptions of their newborns. PMID- 3852647 TI - Funny laws. PMID- 3852648 TI - Enzymatic activity of rat submandibular gland kallikrein released into blood. AB - Enzymatic activity of submandibular gland (SG) kallikrein released into saliva and blood was studied at rest and after autonomic nerve stimulation. Kallikrein was measured by an immunometric assay that allows measurement of immunoreactive kallikrein in complex with inhibitors as well as simultaneous determination of kallikrein enzymatic activity. Measurements using the chromogenic substrate S2266 gave identical results to the natural substrate kininogen. Endogenous SG kallikrein secretory rate was, at rest, 0.9 +/- 0.1 ng/min. Kallikrein secretion into blood in response to autonomic nerve stimulation paralleled that into saliva, and secretion was greatly enhanced by alpha-adrenergic stimulation. In plasma, kallikrein was bound to several inhibitors that completely or partially blocked the enzyme activity. In arterial and SG venous control plasma, 93 +/- 3 and 72 +/- 10% inhibition of kallikrein enzyme activity was observed, respectively. Sympathetic stimulation after administration of a beta-adrenergic blocker increased kallikrein enzyme activity 62 and 11 times in arterial and SG venous plasma, respectively, with a corresponding 78 +/- 8 and 70 +/- 8% inhibition of kallikrein enzyme activity. A fraction containing kallikrein resembling "free kallikrein" was always present in plasma. PMID- 3852649 TI - Isolation, characterization, and amino-terminal amino acid sequence analysis of human neutrophil elastase from normal donors. AB - Human neutrophil elastase from normal donors has been purified using an isolation procedure which included sequential sodium chloride extraction, Aprotinin Sepharose affinity chromatography, CM-cellulose ion-exchange chromatography, and AcA44 gel filtration chromatography. The inclusion of this last purification step was crucial for separating inactive lower molecular weight species from the active forms of neutrophil elastase and resulted in a higher specific activity of the final preparation. Sodium dodecyl sulfate-polyacrylamide gradient gel electrophoresis of the reduced purified protein demonstrated three polypeptides of Mr 31,000, 28,000, and 27,500. Four polypeptides were resolved on acid gel electrophoresis; each of the four possessed amidolytic activity. Furthermore, peptide analysis of Staphylococcus aureus V8 protease digests indicated that these polypeptides are structurally related to each other and represent microheterogeneity of the purified protein. The apparent isoelectric points of these four forms as determined by two-dimensional electrophoresis range from 6.1 to 6.7. By utilizing microsequencing techniques, the first 40 residues of neutrophil elastase have been determined and compared with the reported sequence of elastase isolated from leukemic myeloid cells. In addition, a high degree of homology was found within the amino-terminal regions of neutrophil elastase and the serine proteinases porcine elastase, bovine chymotrypsin, human factor D, and the beta chain of plasmin. PMID- 3852650 TI - Nurses meet challenges as cost cuts take toll. PMID- 3852651 TI - RN gives supportive care to patients dying of AIDS. Interview by Patricia McCarty. PMID- 3852652 TI - North Dakota hearings support two nursing levels: BSN, AD. PMID- 3852653 TI - NIH Bill passes, includes nursing research center. PMID- 3852655 TI - Assessment reveals it's time for us to change. PMID- 3852654 TI - 10 qualities prepare BSN nurses for acute care, director says. PMID- 3852656 TI - As I see it: LPNs see associate degree as key to their survival. PMID- 3852658 TI - Strategies to meet increased competition for outpatients. AB - The aim of marketing is to make selling superfluous. The aim of marketing is to know and understand the consumer so well that the product or service fits him and sells itself," said P. F. Drucker in Management: Tasks, Practices, Responsibilities. For hospitals that are directly competing with surgicenters for patients and physicians, the competition will intensify. Hospitals in those environments must develop streamlined ambulatory surgery programs that are attuned to consumers' changing demands. The winners in capturing the ambulatory surgery market will be organizations with the following: current market knowledge, facilities that serve the consumer's needs and demands, creative leadership, a formalized marketing plan, and a commitment to excellence. PMID- 3852657 TI - Evaluation of oxacillin tolerance in Staphylococcus aureus by a novel method. AB - A novel agar dilution plate-count procedure for the quantitative measurement of bacterial inhibition and killing is described. For Staphylococcus aureus versus oxacillin, by the agar dilution plate-count procedure it was found that only 1 of 20 clinical isolates and 1 of 7 allegedly tolerant reference isolates met the conventional definition of tolerance. By using inocula of 10(5) CFU per plate, most isolates were demonstrated to have subpopulations of cells which, although inhibited, persisted for 24 h in concentrations significantly above their MICs. The persister percentages at 24 h appeared to be strain dependent, and all persisters exhibited the paradoxical effect. For each isolate, the persister percentage markedly decreased after action by oxacillin for 48 h, and the paradoxical effect was greatly diminished. Our findings suggest that tolerance is an artificial and arbitrary concept that does not adequately characterize the inhibition and killing dynamics associated with the persister phenomenon. PMID- 3852659 TI - Carcinoma of the parasinuses. Perioperative nursing responsibilities. PMID- 3852660 TI - Imperforate anus. Diagnosis and surgical treatment. PMID- 3852661 TI - Facilitating children's coping. Preoperative assessment interviews. PMID- 3852662 TI - Establishing an otologic OR. One hospital's approach to difficulties. PMID- 3852663 TI - Proposed recommended practices. Sterilization and disinfection. PMID- 3852664 TI - Keynote address emphasizes universal caring. PMID- 3852665 TI - Living wills--assuring patients' decision-making rights. PMID- 3852666 TI - Effects of antimicrobial agents fed to chickens on some gram-negative enteric bacilli. AB - Total and antimicrobial agent-resistant aerobic and facultative anaerobic gram negative enteric bacilli in fecal samples of broiler chickens fed growth promotional levels of antimicrobial agents were determined quantitatively. Two 8 week studies were conducted utilizing groups of chickens fed antimicrobial supplemented rations; the second study involved feed "pasteurization" as a means of minimizing colonization from the feed. Dilution/spread-plating/replica-plating techniques on selective media were used to obtain counts of total organisms and those resistant to tetracycline, chloramphenicol, streptomycin, ampicillin, or kanamycin. The predominant aerobic and facultative anaerobic gram-negative organism was Escherichia coli, which was detected in all samples at levels ranging from 10(5) to over 10(10) CFU/g of feces. Less common were Proteus mirabilis, Klebsiella pneumoniae, and Pseudomonas sp., which varied in occurrence and levels from group to group (range, less than 10(3) to 10(8) CFU/g). Resistance to all antimicrobials (except chloramphenicol in E. coli) was commonly observed at incidences exceeding 10(3) CFU/g in the total populations. Colonization of the chickens' intestinal tracts by susceptible and resistant strains of E. coli, K. pneumoniae, and Pseudomonas sp. appeared to result from their presence in the environment of the newly hatched chickens. Ration pasteurization did affect P. mirabilis, which appeared to colonize from the feed. The results suggest that colonization by, and proliferation of, antimicrobial resistant aerobic and facultative anaerobic gram-negative enteric bacilli in chicken intestinal tracts may be less dependent on selection through antimicrobial supplementation of the ration than on their prevalence in environments from which they can colonize newborns. PMID- 3852667 TI - Aging in today's society. PMID- 3852668 TI - Terminating dialysis: a case study and public health policy analysis. PMID- 3852669 TI - From committee to copyright. PMID- 3852670 TI - Psychomotor skills for baccalaureates. PMID- 3852671 TI - Aggression against nurses. PMID- 3852672 TI - Infertility therapy: the genesis of a course. PMID- 3852673 TI - Nurse & the law. Drug orders must be written up. PMID- 3852674 TI - Gliclazide--oral hypoglycaemic agent. PMID- 3852675 TI - Colic: a "residential" management plan. PMID- 3852676 TI - The blood story. Part III. The storage and administration of blood and blood products. PMID- 3852677 TI - Signposts to better psychogeriatric behaviour. PMID- 3852678 TI - College education: reflections of a mature student. PMID- 3852680 TI - Corticosteroids. PMID- 3852679 TI - Nurse & the law. A timely warning. PMID- 3852681 TI - Elastase in the different primary granules of the human neutrophil. AB - Elastase in the human neutrophil is associated with various subpopulations of primary granules of different density. The proportion of this enzyme that is extracted with acetate pH 4.2 and cetyltrimethylammonium bromide varies in the different subpopulations. Nevertheless, the electrophoretic mobility and relative proportions of elastase isoenzymes is the same in both extracts from the different subpopulations. On stimulation of neutrophils with N formylmethionylleucylphenylalanine, elastase is not released from the least dense subpopulation, whereas other two subpopulations do undergo degranulation to approximately the same extent. However, the release of elastase from these two denser granules differs after they are isolated and treated with calcium. PMID- 3852682 TI - Tissue kallikrein of human seminal plasma is secreted by the prostate gland. AB - Samples of human seminal plasma were subjected to gel filtration, and the eluted fractions were analysed for their contents of tissue kallikrein-like antigen, arginine esterase activity and kininogenase activity. Two peaks of tissue kallikrein-like antigen were detected with apparent molecular masses of about 72 and 48 kDa. As judged by the criteria of molecular mass, immunoreactivity, kininogenase activity, identification of the released kinin as kallidin and inhibition studies, a genuine tissue kallikrein has been identified in the 48-kDa peak. In addition, this peak contains one or more species of immunoreactive tissue kallikrein which differ in molecular mass and enzymatic activities. The 72 kDa peak probably represents the complex of tissue kallikrein with alpha 1 proteinase inhibitor rather than a true high molecular mass tissue kallikrein. The prostate gland was identified as the site of origin of the tissue kallikrein in the seminal fluid by indirect methods and by demonstrating immunoreactive tissue kallikrein in prostatic tissue and secretion. PMID- 3852683 TI - [Mechanism and time periods of the development of hyaline membranes in acute respiratory failure of traumatic origin]. AB - The model of chest trauma accompanied by acute respiratory failure was studied on 78 guinea-pigs. Histological and electron microscopic methods have revealed a typical pattern of shock lung: combination of diffuse bilateral microfocal distelectases and microcirculation disturbances, i.e. pulmonary venular spasm accompanied by sludge, disseminated intravascular coagulation, focal hemorrhages and interstitial edema. In 5 out of 13 cases 72 hours later hyaline membranes were observed as conglomerations of eosinophilic masses of plate form, distinct from intraalveolar edema. At the ultrastructural level hyaline membranes could be identified as stripes of granular or fibrillar accumulations containing cellular organella debris, ajacent to alveolar walls. PMID- 3852684 TI - Blood cells as markers for metabolic disorders. PMID- 3852685 TI - Danazol in acquired amegakaryocytic thrombocytopenic purpura: a case report. AB - Acquired amegakaryocytic thrombocytopenic purpura is a rare disease. Most reported patients did not respond to any therapeutical approach. Recently we observed a striking improvement of this disorder in a female patient shortly after therapy with danazol had been initiated. This observation and its possible implication for the treatment of amegakaryocytic thrombocytopenia are reported herein. PMID- 3852687 TI - Education blitz necessary to reduce fear of AIDS, says infection control nurse. PMID- 3852686 TI - Effects of diadenosine triphosphate (Ap3A) and diadenosine tetraphosphate (Ap4A) on platelet aggregation in unfractionated human blood. AB - The effects on platelet aggregation of diadenosine triphosphate (Ap3A) and diadenosine tetraphosphate (Ap4A), both of which are stored in and released from platelet granules, have been studied in unfractionated human blood using a microscopic platelet-count ratio method. Ap3A at submicromolar concentrations induces platelet aggregation whereas the homologue dinucleotide Ap4A has disaggregating potency. In the concentration range between 10(-7) to 10(-5) M, Ap3A has been found to be as effective as ADP in triggering aggregate formation. These results confirm and essentially extend our recent findings with platelet rich plasma that Ap3A is able to trigger platelet aggregation by a slow release of ADP from Ap3A which is catalyzed by a plasma hydrolase. Formation of platelet aggregates was also followed kinetically using a turbidometric method which has been developed for this purpose. In contrast to ADP which very rapidly induces a transient state of aggregation, the effect of Ap3A occurs much more slowly but induces the same maximum of aggregation. The duration of the Ap3A stimulus, however, is longer than that of ADP pointing to a potential physiological function of Ap3A as a "masked" source for ADP. PMID- 3852688 TI - An Ethiopian experience. PMID- 3852689 TI - Acute stroke: early recognition is the key to successful treatment. PMID- 3852690 TI - Abortion: the teenage patient and the OR nurse. PMID- 3852691 TI - Nurses speak out on teens and abortion. PMID- 3852692 TI - The effects of inflammatory bowel disease on lifestyle. PMID- 3852693 TI - tRNA nuclear transport: defining the critical regions of human tRNAimet by point mutagenesis. AB - We recently described a carrier-mediated nuclear transport system for tRNA in Xenopus laevis oocytes. A natural human tRNAimet variant with a G to T transversion in position 57 is defective in transport across the nuclear membrane. In addition, processing of the primary transcript of the variant gene is much less efficient than the wild type. We now describe the nuclear transport and processing phenotypes of 30 different point mutants generated by in vitro mutagenesis of a wild-type human tRNAimet gene. The effects of each nucleotide change on processing and transport were analyzed in X. laevis oocytes following nuclear microinjection of each mutant gene. Mutants exhibiting transport defective behavior were further characterized by measuring transport kinetics of the purified mature tRNA. Our studies demonstrate that many mutations affect tRNAimet nuclear transport, although those with the most deleterious effects are clustered in the highly conserved D stem-loop and T stem-loop regions. PMID- 3852694 TI - The effects of vanadate and molybdate on cathepsin D; relationship to ATP activation of lysosomal proteolysis. AB - The effects of the phosphate analogues, vanadate and molybdate, on the ATP activated enzyme, cathepsin D, were investigated. Both were found to inhibit proteolysis but this appeared to be the result of non-specific interactions with the protein substrates which result in precipitation, rather than interactions with the enzyme. Inhibition of proteolysis was induced by the same concentration of inhibitors as that which induced precipitation (measured by turbidity), and was dependent on the concentration of substrate. Precipitation did not occur at neutral pH but was maximal below pH 5. High concentrations of salt (greater than 1M KC1) prevented precipitation of proteins by vanadate and molybdate and under these conditions little inhibition of proteolysis was observed even at high inhibitor concentrations. Nonetheless, ATP was found to activate proteolysis catalyzed directly by lysosomal enzymes at acid pH, while vanadate and molybdate inhibited proteolysis in this system and induced precipitation of substrate. These results indicate that inhibition of proteolysis at acid pH by vanadate (or molybdate) has no relationship to inhibition of proteases and/or ATP dependence of such enzymes. However, direct activation of cathepsin D in lysosomes by ATP remains a viable hypothesis. PMID- 3852696 TI - [AIDS: implications for South African nurses--I]. PMID- 3852695 TI - Nurse returns after three years in El Salvador. Interview by Beth Blacksin.. PMID- 3852697 TI - Preparing nurse managers for informed action. PMID- 3852698 TI - [The effectiveness of various study opportunities for psychiatric nursing students to learn interpersonal skills]. PMID- 3852700 TI - A community development project. PMID- 3852699 TI - [The needs of the hospitalized young child from the developmental viewpoint]. PMID- 3852701 TI - Village health workers: first line of contact in the Republic of Ciskei. PMID- 3852702 TI - [The mourning process]. PMID- 3852703 TI - [Adolescent daughters should receive education on breast examination and menstruation]. PMID- 3852704 TI - Factors associated with the perception of side-effects relating to the use of contraceptive methods. PMID- 3852705 TI - Intra partum foetal distress. PMID- 3852706 TI - [Foot care for the elderly--1. Assessment of the need for foot care in a group of elderly persons]. PMID- 3852708 TI - Symposium on pulmonary edema. PMID- 3852707 TI - Effect of gamma radiation versus ethylene oxide sterilization of dialyzers and blood lines on plasma levels of granulocyte elastase in hemodialyzed patients. AB - The effect of gamma versus ethylene oxide sterilization of different dialyzers (polyacrylonitrile, cuprophan) and blood lines on plasma levels of granulocyte elastase and of lysozyme during hemodialysis was investigated in 17 chronically uremic patients. Plasma levels of granulocyte elastase increased during hemodialysis but significantly less in the presence of polyacrylonitrile compared with cuprophan membranes. In contrast, enhanced lysozyme plasma levels decreased during dialysis using the polyacrylonitrile dialyzer to values of healthy controls and remained unchanged using the cuprophan dialyzer. Both effects were not influenced by the way of sterilization. We conclude that granulocyte activation during hemodialysis occurs independently of the sterilization procedure of dialyzers and blood lines in patients showing no clinical signs of hypersensitivity. PMID- 3852709 TI - The Student Paper Competition in Medical Informatics at the Symposium on Computer Applications in Medical Care (SCAMC) PMID- 3852710 TI - Development and applications of an interactive digital filter design program. AB - We have implemented an interactive digital filter design program in the HP 1000 computer at the Department of Electrical Engineering of the University of Washington. This program allows users to design different types of filters interactively with both amplitude and phase responses displayed on graphic devices. The performance of each designed filter can be evaluated conveniently before the best one is chosen and implemented for any particular application. This program can design recursive filters, e.g. Butterworth, Chebyshev and elliptic, or nonrecursive filters with one out of six different windows, i.e. rectangular, triangular, Hann, Hamming, Blackman and Kaiser. The main outputs from this program are coefficients of a transfer function of an analog filter, a digital filter, or both. Therefore, the design of both analog and digital filters is facilitated by using this program. The program is very simple to use and does not require background in analog or digital filter principles in order to run it. The program is written in standard FORTRAN and is about 30 kbytes in size excluding the graphics display routines. Since it uses standard FORTRAN, it can be easily transported to minicomputer and microcomputer systems that have a FORTRAN compiler and minimal graphics capabilities. This program is available for distribution to interested institutions and laboratories. PMID- 3852711 TI - SCAN, an exploratory program for preliminary analysis of bioassay and immunoassay data. AB - We describe the program SCAN which has been designed for use in conjunction with analysis of variance of immunoassay or bioassay data and which may also be used with more general one-way analysis of variance. Data within treatment groups are examined for outliers and normality of distribution. Overall statistics for normality and homogeneity of variance are also computed. Contributions of individual groups to these statistics are tabulated to permit the detection of aberrant groups. Means and variances are available in a form which facilitates detection of any response error relationship. PMID- 3852712 TI - Alignment of nucleotide or amino acid sequences on microcomputers, using a modification of Sellers' (1974) algorithm which avoids the need for calculation of the complete distance matrix. AB - A program to calculate optimum alignment between two sequences, which may be DNA, amino acid or other information, has been written in PASCAL. The Sellers' algorithm for calculating distance between sequences has been modified to reduce its demands on microcomputer memory space by more than half. Gap penalties and mismatch scores are user-adjustable. In 48 K of memory the program aligns sequences up to 170 elements in length; optimum alignment and total distance between a pair of sequences are displayed. The program aligns longer sequences by subdivision of both sequences into corresponding, overlapping sections. Section length and amount of section overlap are user-defined. More importantly, extension of this modification of Sellers' algorithm to align longer sequences, given hardware and compilers/languages capable of using a larger memory space (e.g. 640 K), shows that it is now possible to align, without subdivision, sequences with up to 700 elements each. The increase in computation time for this program with increasing sequence lengths aligned without subdivision is curvilinear, but total times are essentially dependent on hardware/language/compiler combinations. The statistical significance of an alignment is examined with conventional Monte Carlo approaches. PMID- 3852713 TI - Computational statistics for cell survival curves. I. Evaluation of the colony forming ability of a single cell strain by the APL function CFALINE. AB - An interactive program for the statistical analysis of cell survival curves by a linear regression approach is described. It allows for the computational determination of the linear part of a cell survival curve and the determination of a common slope estimate in the presence of repeated experiments for a particular cell strain with the appropriate variance estimates and confidence intervals. PMID- 3852714 TI - Computational statistics for cell survival curves. II. Evaluation of colony forming ability of a group of cell strains by the APL function CFAGROUP. AB - An interactive program for the statistical analysis of groups of cell survival curves is described. Methods from linear regression are applied in the presence of repeated experiments and estimates of a common slope and its variance are obtained by weighted means and a bootstrap resampling technique. PMID- 3852715 TI - Early detection of cutaneous malignant melanoma by three-dimensional nevoscopy. AB - Malignant melanoma is the most lethal form of skin cancer, and often develops from a pre-existing mole (nevus) or the pigment cells of the upper layer of the skin. The incidence of, as well as the mortality rate due to malignant melanoma is increasing relentlessly all over the world. The survival rate may be improved and nearly all patients may be saved if their melanomas are detected early and removed surgically. We have developed a new non-invasive method of imaging nevi and other skin lesions for the detection of three-dimensional changes in the shape and size of such lesions which uses the principles of computed tomography (CT). The skin lesion is transilluminated using fibre optics directed into the skin and images of the transilluminated lesion are obtained at different angles by an optical instrument called a 'nevoscope'. The three-dimensional reconstruction of the lesion is then obtained using new limited-view CT algorithms. A quantitative analysis of consecutive three-dimensional reconstructions demonstrates any changes in thickness, size, color, and structure of the lesion which may indicate the development of a malignant melanoma. PMID- 3852716 TI - [Instructions in case studies by students (1)]. PMID- 3852718 TI - [Interactions with the family members who are caring for an aged, bedridden patient]. PMID- 3852717 TI - [Psycho-cybernetics and nursing--in search of more meaningful encounters with the patient. (3)]. PMID- 3852719 TI - [Discussion on the report on the "interactions with the family members who are caring for an aged, bedridden patient"]. PMID- 3852720 TI - Old wives tales: eye of newt. PMID- 3852721 TI - Lifting aids: let the aids take the strain. PMID- 3852722 TI - Infant care: getting it right. PMID- 3852723 TI - District nursing: spreading the load. PMID- 3852724 TI - Political animals. PMID- 3852725 TI - [The PMN elastase plasma level, a biochemical parameter of the severity of trauma]. AB - Polytrauma patients with defined severity of trauma showed a significant release of lysosomal enzymes as measured by PMN leucocyte elastase-alpha 1 proteinase inhibitor complex in plasma. A positive correlation was found between the amount of liberated elastase and the severity of trauma (- indicated by means of extent of tissue trauma and blood loss). The concentration of elastase complexed with alpha 1 proteinase inhibitor may serve as an indicator for the severity of trauma and as an objective parameter supplementing the scales and scores used until now, which all are based upon subjective judgement. PMID- 3852726 TI - A possible role for self-management techniques in control of diabetes. PMID- 3852727 TI - Community-based diabetes education: an outreach program. PMID- 3852728 TI - Using the team approach in pediatric diabetes care: a retrospective audit. PMID- 3852729 TI - Diabetes education and the older patient. PMID- 3852730 TI - Diabetes and pregnancy: a retrospective 5-year description comparing two management settings. PMID- 3852731 TI - Anxiety and the timing of diabetes teaching in the hospital: a literature review. PMID- 3852732 TI - Flexible diets for diabetes care. PMID- 3852733 TI - Diabetes and grief. PMID- 3852734 TI - Third party reimbursement for diabetes care. I. The prospective payment system: implications for diabetes patient education. PMID- 3852735 TI - A team approach to weight loss. PMID- 3852737 TI - A course for babysitters of children with IDDM. PMID- 3852736 TI - An item bank of diabetes-related test questions. PMID- 3852738 TI - Dental care for the person with diabetes mellitus. PMID- 3852739 TI - A team approach: peer group support program for adolescents with diabetes. PMID- 3852740 TI - Nutrition update. PMID- 3852741 TI - The origin of the very variable haemolytic activities of the common human complement component C4 allotypes including C4-A6. AB - The human complement component C4 occurs in many different forms which show big differences in their haemolytic activities. This phenomenon seems likely to be of considerable importance both physiologically and pathologically. C4 is coded by duplicated genes between HLA-D and HLA-B loci in the major histocompatibility complex in man. Several fold differences in haemolytic activity between products of the two loci C4-A and C4-B have been correlated with changes of six amino acid residues in this large protein of 1722 residues and with differences of several fold in the covalent binding of C4 to antibody-antigen aggregates. Some allotypes of one locus also differ markedly, notably C4-A6 which has 1/10th the haemolytic activity of other C4-A allotypes. A monoclonal antibody affinity column has been prepared which is able to separate C4-A from C4-B proteins and, using serum from an individual expressing only the C4-A6 allele at the C4-A locus, C4-A6 protein has been prepared. Investigation has shown C4-A6 to have the same reactivity as other C4-A allotypes except in the formation of the complex protease, C5 convertase. This protease is formed from C4, C2 and C3 and if C4-A6 is used it has approximately 1/5th the catalytic activity compared with other C4-A allotype. Allelic differences in sequence identified in C4 proteins so far are few and it is probable that the big difference in catalytic activity of C5 convertase is caused by very small changes in structure. PMID- 3852742 TI - Elastase digested urokinase (ED-UK). AB - Elastase digested urokinase (ED-UK) was prepared from human high mol. wt urokinase (HMW-UK). It resembled low mol. wt urokinase (LMW-UK) in its mol. wt, specific activity, and active sites. The steady-state kinetic parameters of each enzyme for the activation of human Glu-plasminogen also resembled each other, as did their amidase parameters (with pyro-Glu-Gly-Arg-pNA). PMID- 3852743 TI - When do we stop--or do we? PMID- 3852744 TI - Assessment and treatment of right ventricular infarction. PMID- 3852745 TI - Public controversies and private rights. PMID- 3852746 TI - Trauma during pregnancy. Nursing assessment in the emergency department. PMID- 3852747 TI - Chest tube stripping: is it necessary? PMID- 3852748 TI - You--a nurse manager? Career development. PMID- 3852749 TI - Jacqueline Clinton. Nursing research goes public. PMID- 3852750 TI - Not life threatening: mitral valve prolapse syndrome. PMID- 3852751 TI - Legislation affects your practice. PMID- 3852752 TI - The transport of conjoined twins. PMID- 3852753 TI - [Civil defense, a need vital to be considered]. PMID- 3852754 TI - [Home childbirth today]. PMID- 3852755 TI - Nucleotide sequence of the transcription initiation region for rRNA in the sea urchin Lytechinus variegatus. AB - The 1191-bp sequence which includes the 5' end of 18S X rDNA and its adjacent spacer have been determined for a cloned fragment of sea urchin rDNA. The 5' end of 33S precursor rRNA (pre-rRNA) has been located by S1 nuclease mapping and primer extension. Pre-rRNA appears to be initiated at an A, 658 bp upstream from the 5' terminus of 18S rRNA. The first nucleotide of 18S rRNA was also analyzed by S1 nuclease mapping and found to correspond to T in the nontranscribed DNA strand. Comparisons of the transcription initiation region in rDNA and the 5' end of 18S X rDNA with the corresponding regions in other eukaryotes reveal no significant nucleotide sequence homology in the precursor portion while the 5' end of 18S X rDNA is highly conserved. PMID- 3852756 TI - Replies to a "Call for Help". PMID- 3852757 TI - Today I came home and cried. PMID- 3852758 TI - Managing indwelling catheters in the home. PMID- 3852759 TI - A new device to decrease falls. PMID- 3852760 TI - Nutrition. Imitation food and the real thing. PMID- 3852761 TI - 70+ and going strong. A conversation with Eric Sevareid. PMID- 3852762 TI - Drugs and the elderly. Cardiovascular update. PMID- 3852763 TI - The role of the nurse practitioner--with the accent on "nurse'. PMID- 3852764 TI - Nurse practitioner and the law. PMID- 3852765 TI - The education of a nurse practitioner. PMID- 3852767 TI - Contexts for scientific creativity: applications to nursing. PMID- 3852766 TI - A Christmas "least one' on Hell-fer-Sartin. PMID- 3852768 TI - A model for predicting the adaptation of families to medical crisis: an analysis of role integration. PMID- 3852769 TI - A descriptive study: defining characteristics of the nursing diagnosis cardiac output, alterations in: decreased. PMID- 3852770 TI - Maximizing mailed questionnaire responses. PMID- 3852771 TI - Rationale for a language for naming problems from a nursing perspective. PMID- 3852772 TI - Nursing shortage in transition. PMID- 3852773 TI - The changing nursing practice environment: future employment opportunities for RNs. PMID- 3852774 TI - S.H.A.R.E. your way to success: an approach for finding your first job. PMID- 3852775 TI - Time management skill: a key to success. PMID- 3852776 TI - Interviewing: a necessary skill in today's shrinking job market. PMID- 3852777 TI - Is your curriculum vitae or resume working for you? PMID- 3852778 TI - Different allotypes of C3 degrade at different rates. AB - To determine whether different forms of C3 degrade at different rates, we compared two strains of mice with a B10 background. The only difference was that one is C3A, while the other is C3B. These strains allow comparison of C3A and C3B without the added complication of differing C3 convertases. Sera from the two strains were incubated with zymosan and the degradation products were detected by immunofixation following electrophoresis in agarose. The rate of degradation of mouse C3B was more rapid than that of C3A. Differences in the rates of degradation could not be explained by differing concentrations of C3. We suggest that the genetic differences in C3 determine the decay rate following activation via the alternate pathway. PMID- 3852779 TI - Increasing prevalence of high degree resistant strains of salmonellae to ampicillin, chloramphenicol and furazolidone in India. PMID- 3852780 TI - Characterization of monoclonal and polyclonal antibodies to human tissue kallikrein. AB - Monoclonal antibodies to purified human urinary kallikrein have been developed. Selection of antibody producing clones was based on 125I-kallikrein binding activity of hybridoma media in both radioimmunoassay and enzyme-linked immunosorbent assay. Three clones (2 IgG1, 1 IgG2b) were subcloned, characterized, and compared with the polyclonal antiserum generated in rabbits immunized with the purified kallikrein. With radioimmunoassay, mouse ascitic fluids or rabbit antisera dilutions showing 50% binding to 125I-kallikrein were 1:1.2 X 10(6) (E7A9), 1:1.2 X 10(5) (H6A6), 1:8.0 X 10(4) (E12H1), and 1:1.4 X 10(6) (the rabbit antisera). With enzyme-linked immunosorbent assay, mouse ascitic fluids from clones E7A9 and H6A6 showed half-maximal absorbance at dilutions of 1:2.1 X 10(5) and 1:1.0 X 10(5) respectively, and the polyclonal antiserum showed half-maximal absorbance at a dilution of 1:2.0 X 10(4). These monoclonal antibodies showed no cross-reactivity with rat tissue kallikrein, rat urinary plasminogen activator, or dog pancreatic kallikrein, while the polyclonal antiserum showed some cross-reactivity. The binding of monoclonal or polyclonal antibodies to 125I-human urinary kallikrein was not affected by human plasma kallikrein, thrombin, or urokinase in a competitive radioimmunoassay. By using purified human urinary kallikrein immobilized to agarose, antibodies produced by clones E7A9 and H6A6 and in the rabbit antisera were purified to homogeneity. Each of these affinity-purified antibodies inhibited the esterase activity, and two of the three inhibited the kininogenase activity, of human urinary kallikrein. A sandwich immunosorbent assay was developed to measure this kallikrein using monoclonal antibody from the clone E7A9 in conjunction with the polyclonal antibodies.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3852781 TI - [A long-range program of baccalaureate studies in Manitoba]. PMID- 3852782 TI - [The right to live with pain]. PMID- 3852783 TI - [Intense emotional reactions with induced abortion]. PMID- 3852784 TI - [A tool for data collection in obstetrics]. PMID- 3852785 TI - [The headset or the snares of the new acoustic drug]. PMID- 3852786 TI - [Who helps the adolescents?]. PMID- 3852787 TI - [The prevention of anorexia]. PMID- 3852788 TI - [Nursing diagnosis: an educational application]. PMID- 3852789 TI - [With radiation: reducing the risks]. PMID- 3852790 TI - [Thoracic drainage using Pleurevac]. PMID- 3852791 TI - [Fighting at the risk of losing]. PMID- 3852792 TI - [Nursing care plan: mastectomy]. PMID- 3852793 TI - [How to react to the death of a child?]. PMID- 3852794 TI - [Attitudes and behaviors towards global orientation to health]. PMID- 3852795 TI - [Disaffiliation of the OIIQ (Order of Nurses of Quebec)]. PMID- 3852796 TI - Epidemiology and clinical significance of blood cultures positive for coagulase negative staphylococcus. AB - Coagulase-negative staphylococci are frequently isolated from blood cultures. As these organisms may occasionally cause serious disease, differentiating bacteremia from contamination is very important but often difficult. Over a 26 month period, of 29,542 blood cultures processed at the University of Michigan Medical Center, 2,875 (9.7%) were positive, and of those, 694 (from 527 patients) grew coagulase-negative staphylococci. Isolates from the 439 patients with only one blood culture positive for coagulase-negative staphylococci and those from the 18 patients with two positive cultures 10 days or more apart were deemed contaminants. Review of the records of the remaining 70 patients with multiple isolates indicated that 33 had had an episode of true bacteremia, 29 (87.9%) of which were associated with intravascular catheters or prosthetic valves. Overall, 85% of all coagulase-negative staphylococci isolated during the study period were judged to be contaminants. Seventy-one percent of the blood cultures drawn during the episodes of bacteremia were positive for coagulase-negative staphylococci as opposed to only 34% in the patients with contaminated cultures (p less than 0.01). Moreover, coagulase-negative staphylococci grew in both aerobic and anaerobic bottles in 85% of blood culture sets drawn during episodes of bacteremia, but in only 30% of the cultures thought to be contaminated (p less than 0.001). Growth of coagulase-negative staphylococci in less than 48 hours was also significantly associated with bacteremia (p less than 0.01). Antibiotic sensitivity patterns were not useful in differentiating bacteremia from contamination.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3852797 TI - A prospective study of postoperative fever in a general surgery department. AB - During a 4-month period, 693 patients undergoing surgical procedures were prospectively studied to investigate the etiology of postoperative fever (greater than or equal to 38 degrees C during 48 hours or more). The overall rate of fever was similar for the three categories of surgical procedures studied (14%, 13.4% and 13.1% respectively after clean, clean contaminated and contaminated surgical procedures). No cause of fever was found in 5%, 2.7% and 1.7% of patients who underwent clean, clean contaminated and contaminated surgical procedures. Several episodes of fever were observed for 12 patients after clean surgery; for 11 of them this was due to infection. The mean interval between febrile episodes was 4.7 days. After clean wound surgery, fever documented as infectious began significantly later (2.7 vs 1.6 days) and lasted significantly longer (5.4 vs 3.5 days) than fever for which no source was determined. Only half of the infections were associated with fever. PMID- 3852798 TI - Needlecaps to prevent needlestick injuries. AB - Hospital employees are at risk for numerous possible complications of accidental needlesticks. The mechanisms of such accidents suggest that many are preventable. This article presents a simple but novel revision of the needlecap which facilitates resheathing of a used needle. With routine use the hospital environment could be made safer for virtually all employees at almost no additional cost. Ultimate hospital savings could be significant through prevention of injury. PMID- 3852799 TI - The tools of management: keeping high touch in a high tech world. AB - Three of Naisbitt's Megatrends: information processing, high tech/high touch and participatory management--welded into tools of management--have particular relevance for nurses throughout the world. Their use is explored in this paper delivered at a Special Interest Session in Tel Aviv at the ICN Congress. PMID- 3852800 TI - The homeless mentally ill. AB - All countries in the West experience the phenomenon of what has been called 'the homeless mentally ill'. There seems to be no simple solution but a challenge is presented to all nurses who can play a significant role. This is an abridged version of a paper delivered in Tel Aviv by two American nurses. PMID- 3852801 TI - Primary what? AB - What is meant by 'primary care' Is it peculiar to nursing? Is it concerned with Primary Health Care? The authors delivered this paper at one of the Special Interest sessions in Tel Aviv at the Quadrennial Congress and stimulated the audience to much thought. Are we sure we are always talking about the same thing? PMID- 3852802 TI - Psychosocial nursing intervention: a vehicle for the prevention of illness among international students. AB - Students who undertake a course of study abroad are, on the whole, a physically and psychologically healthy population. This study was designed to investigate the effectiveness of nursing intervention in preventing illness among international students experiencing situation-induced stress precipitated by their geographical and cultural relocation. PMID- 3852803 TI - Violation of human rights and the nursing profession. AB - In Denmark, at Copenhagen's University Hospital there is an International Rehabilitation and Research Centre for Torture Victims where work began early in the 1980's. Since May, 1984 treatment has taken place and two nurses, working with Centre, described the situation at the ICN Congress in Tel Aviv. PMID- 3852804 TI - Hospitals without walls. The New Brunswick Extra-Mural Hospital. AB - This article describes a Canadian experiment of an attempt to meet the health care needs of the people of New Brunswick, a province on the Eastern seabord of Canada, where half of the population live in rural areas. PMID- 3852806 TI - Courage needed to uphold truths. PMID- 3852805 TI - Strategies for joint appointments. AB - The structure and policies governing joint appointments discussed above, are developed primarily through cooperation and collaboration between nursing service and education institutions. The joint appointee participates in the process of negotiation of salary, benefits and role responsibilities and exploration of the implications of the appointment for personal career development. Implementation and maintenance of the appointment requires the collaborative efforts of the joint appointee with both contracting agencies. Factors influencing the functioning of joint appointees have been identified and strategies to facilitate functioning presented. The joint appointee must be independent in thought and action yet adaptable to work within the boundaries of two social systems with differing values and expectations. Nursing management, peers and students can provide the support needed to overcome the frustrations and to achieve the rewards inherent in successful implementation of an exciting and innovative role. PMID- 3852808 TI - Symposium on congenital heart disease in infants and children. An overview. PMID- 3852807 TI - C3, BF and C4 polymorphisms in familial Mediterranean fever. AB - BF, C3 and C4 phenotyping were investigated in 34 patients with familial Mediterranean fever (FMF) and in 48 control subjects. Both groups included Sephardic Jews born in Tunisia, Algeria and Morocco. No linkage between BF, C3 and C4 polymorphisms and FMF was found. PMID- 3852811 TI - Home care of infants and children with cardiac disease. PMID- 3852810 TI - Nursing assessment and care of children with complications of congenital heart disease. PMID- 3852809 TI - Postoperative care of infants and children who require cardiac surgery. PMID- 3852812 TI - A comparison of intra-arterial and auscultatory blood pressure readings. PMID- 3852813 TI - Direct versus indirect blood pressure measurements in critically ill patients. PMID- 3852814 TI - Cardiac output determination by the thermodilution method: comparison of ice temperature injectate versus room-temperature injectate contained in prefilled syringes or a closed injectate delivery system. PMID- 3852815 TI - Cardiovascular consequences of bed rest. PMID- 3852816 TI - The role of nursing in limiting myocardial infarct size. PMID- 3852817 TI - A closer look at inferior wall myocardial infarction. PMID- 3852818 TI - Imaging techniques in patients with acute myocardial infarction. PMID- 3852819 TI - Hemofiltration: a new technique in critical care nursing. PMID- 3852820 TI - Completing the hemodynamic picture: SvO2. PMID- 3852821 TI - A nurse-supervised exercise stress testing laboratory. PMID- 3852822 TI - Coronary and esophageal diseases: symptom overlap. PMID- 3852823 TI - The treatment of atrial fibrillation and flutter. PMID- 3852824 TI - [To give birth in Orebro. A study of the psychological care in obstetric and postpartum care departments in Karlskoga, Lindesberg and Orebro]. PMID- 3852825 TI - [Swedish Statute Book]. PMID- 3852826 TI - [The natural incubator. Report on "kangaroo methods' in Colombia, South America]. PMID- 3852827 TI - [Chlamydia: a prevalence study in contraception applicants]. PMID- 3852828 TI - [Work possibilities in developing countries]. PMID- 3852829 TI - [New ideas in maternal health care]. PMID- 3852830 TI - [It is generally known that a lot more women breastfeed today than 15-20 years ago]. PMID- 3852831 TI - [Large staff of volunteers in California milk bank]. PMID- 3852832 TI - [A midwife's recollections]. PMID- 3852833 TI - [Autistic children are different children]. PMID- 3852834 TI - Species dependent variability in the susceptibility of coagulase-negative staphylococci to various antimicrobial agents. AB - The in-vitro activity of 20 beta-lactam antibiotics and vancomycin was determined against three different species of coagulase-negative-staphylococci. All isolates were susceptible to vancomycin (MIC90 3.12-6.25 mg/l) although occasional tolerance was seen. Most isolates (85%) of Staphylococcus hominis were susceptible to methicillin and other beta-lactams including cephalothin, cefapirin, cefamandole, imipenem and BMY28142, while 90% of Staph. haemolyticus isolates were resistant to these agents. Staph. epidermidis was intermediate in susceptibility with 50% of isolates being methicillin resistant (MR). These MR isolates exhibited cross-resistance or tolerance to the other beta-lactam agents except cefamandole. PMID- 3852835 TI - Testing of methicillin resistant staphylococci for susceptibility to coumermycin. PMID- 3852836 TI - Changes in lung volume and deflation stability in hyaline membrane disease. AB - Total lung capacity (TLC), inspiratory capacity, functional residual capacity, and deflation stability of prematurely delivered Macaca nemestrina primates were measured serially during development of, and recovery from, hyaline membrane disease (HMD) to relate changes in lung volumes to changes in deflation stability. Gestational age-matched primates that did not develop HMD served as controls. TLC, measured by N2 washout, fell at 2-12 h of age (P less than 0.0001) in animals with HMD and remained lower than controls for at least 48 h (P less than 0.005). However, deflation stability, defined as the fraction of TLC remaining upon deflation to 10 cm H2O, improved from 2 to 12 h of age (P less than 0.001). Postmortem studies confirm the measurements of TLC and deflation stability and provide evidence that interstitial thickening and obstruction of air spaces with debris may be partially responsible for the observed changes in TLC in primates that develop HMD. It has been assumed that TLC is reduced in HMD because of atelectasis from elevated alveolar surface tension, but the sequential measurements in these animals suggest that other mechanisms also contribute. PMID- 3852837 TI - The notoriety of disease. PMID- 3852838 TI - Getting to the bottom of the malpractice crisis. PMID- 3852839 TI - Self-concept and rehabilitation of the person with an ostomy. PMID- 3852841 TI - Psychologic factors and inflammatory bowel disease: a review of the literature. PMID- 3852840 TI - Insomnia management. PMID- 3852842 TI - Stoma lacerations. PMID- 3852843 TI - The patient who falls--and falls again: defining the aged at risk. PMID- 3852844 TI - Does aging magnify the danger of burn injury? (Part 1). PMID- 3852845 TI - Living together: grandparents and children tell their problems. PMID- 3852846 TI - Overcoming stroke-related depression. PMID- 3852847 TI - Skin care for older adults. PMID- 3852848 TI - The eyes are the windows. PMID- 3852849 TI - Stop a killer with early detection. PMID- 3852850 TI - Reading a research report. PMID- 3852851 TI - Pseudomonas infection and the ventilated patient. PMID- 3852852 TI - Flecainide: a possible advance in antiarrhythmic therapy. PMID- 3852853 TI - Electrocardiographic monitoring. I--Static monitoring. PMID- 3852854 TI - Nurses' perceptions of patients' needs for information and their concerns in an English coronary care unit. PMID- 3852855 TI - Nursing aspects of pain control in intensive care units. PMID- 3852856 TI - Bishop Harvey's address to the Annual General Meeting. PMID- 3852857 TI - The prevention and treatment of spouse abuse: a community health perspective. PMID- 3852858 TI - Dealing with spiritual concerns of clients in the community. PMID- 3852859 TI - Contracting: a method of health promotion. PMID- 3852860 TI - Funding wellness through community advocacy. PMID- 3852861 TI - Stress, life events, and the epidemiology of wellness. PMID- 3852862 TI - Staff nurses doing discharge planning--but they need help. PMID- 3852863 TI - Credentialing, privileging, and nursing bylaws. Assuring accountability. AB - One of the major activities of a professional group is credentialing and privileging their membership to practice their profession. This article reviews one approach to the development of a hospital nursing credentialing and privileging mechanism: the shared governance. The process discussed focuses on staff responsibility for the appropriate credentialing of their nursing peers. PMID- 3852864 TI - Bylaws. One hospital's experience. AB - Dr. Porter-O'Grady, in the preceding article, discussed some implications of and a model for bylaws. The author of this article relates her institution's experience in developing nursing staff bylaws. She shares the process as well as the advantages and disadvantages of implementing a system for professional accountability and autonomy. PMID- 3852865 TI - Identifying competencies of clinical nurse specialists. AB - The performance of clinical nurse specialists (CNSs) is evaluated most often by quantitative checklists, peer review, self-evaluation, administrative review, or nursing audits. Observations of actual clinical and managerial competencies demonstrated by expert clinical nurse specialists seldom are used. An ethnographic study of the CNS role identified common competencies and skills that can be used by nurse administrators to justify the cost of the advanced practice role and its contributions to organizational goals, and to serve as criteria for job descriptions, performance evaluations, and predictors of employment success. PMID- 3852866 TI - Starting a reprint filing system. AB - A reprint collection represents an investment of time, money, and resources. As with any data base you gather, however, the problem is storing the information for retrieval. This article describes how to design and implement a filing system to make retrieval of reprints both quick and easy. Although reprints are the data base described in this article, the applicability of this filing system to other information can be seen readily. PMID- 3852868 TI - Interrater reliability. PMID- 3852867 TI - The GRASP system. PMID- 3852869 TI - A physician-hired nurse responds. PMID- 3852870 TI - Hospitals: leaders in child care support. PMID- 3852871 TI - Early pregnancy loss in the infertile couple. AB - The infertile couple invests tremendous amounts of time, money, and physical and emotional energy in attempting to conceive. When these couples experience early pregnancy loss, their grief can be profound. The emotional aspects of such pregnancy losses and specific nursing interventions are presented. PMID- 3852872 TI - Assessment of psychological dysfunction associated with infertility. AB - An Infertility Questionnaire (IFQ) was developed to measure the specific effects of infertility on three major areas: self-esteem, blame/guilt, and sexuality. The Infertility Questionnaire, possibly in combination with a standard instrument to measure psychological distress, appears to offer a simple method of assessing the emotional impairment that accompanies infertility. PMID- 3852873 TI - The effect of group counseling on the frequency of grief reported by infertile couples. AB - Twenty-nine individuals undergoing infertility evaluation or treatment attended a six-session, group infertility program. At the first and last session, the individuals were asked to complete a questionnaire about grief, self-concept, marriage satisfaction, and sexual satisfaction. The pretest and posttest scores were used to determine if an infertility group counseling program could be effective in reducing the frequency of grief responses. The study confirmed that infertility counseling was effective in reducing the self-reported symptoms of grief experienced by some infertile couples. PMID- 3852874 TI - A captive audience. PMID- 3852876 TI - Holiday fun. Nutritional cornucopia. PMID- 3852875 TI - An antidote for renal insufficiency--a memory. PMID- 3852877 TI - The other cystitis: interstitial cystitis. PMID- 3852878 TI - Deciphering the EKG's code. PMID- 3852879 TI - Pain in children with cancer: the intervention and evaluation. PMID- 3852880 TI - Conflicts in practice. The argument for--the argument against. PMID- 3852881 TI - Development of a support group for volunteers in a pediatric oncology setting. PMID- 3852882 TI - School and the child with cancer: a program to assist school personnel. PMID- 3852883 TI - Infection control: nosocomial infections. PMID- 3852884 TI - Antimicrobial management of pulmonary tuberculosis. PMID- 3852886 TI - Facts about Kaposi's sarcoma. PMID- 3852885 TI - AIDS. PMID- 3852887 TI - How will the law respond to AIDS?. Interview by Ann Affriol. PMID- 3852888 TI - The silent epidemic. PMID- 3852889 TI - Hypothermia. PMID- 3852890 TI - An update on immunizations. PMID- 3852891 TI - Prolixin group. Can nursing intervention groups lower recidivism? PMID- 3852892 TI - Therapeutic support during inpatient group therapy. PMID- 3852893 TI - Caribbean folk beliefs and Western psychiatry. PMID- 3852894 TI - Art therapy for sexually abused children. PMID- 3852895 TI - Stress & the psychiatric nurse. PMID- 3852896 TI - [The duration of antibacterial treatment following transurethral prostatectomy]. AB - Forty-three cases were studied to determine the most optimal timing to discontinue an oral antibacterial agent for preventing urinary tract infection after transurethral prostatectomy. On the 5th postoperative day intravenous antibiotic treatment was replaced by oral medication of 1.5 g talampicillin hydrochloride (TAPC, Yamacillin), which was tapered and discontinued depending on the urinary findings. Nine out of 15 cases who discontinued the medication within 2 weeks failed to keep the urine sterile. It may be advisable to continue the medication at least 3 weeks and to discontinue thereafter when pyuria has vanished. All 24 cases who followed this principle became sterile within 8 weeks. Medication continued over 8 weeks seemed to have no additional benefit. Four cases dropped out from this treatment mainly because of gastrointestinal symptoms. PMID- 3852897 TI - Bacteriological efficacy of nafcillin and vancomycin alone or combined with rifampicin or amikacin in experimental meningitis due to methicillin-susceptible or -resistant Staphylococcus aureus. AB - The pharmacokinetics and bacteriological efficacy of nafcillin (NFPC), vancomycin (VCM), amikacin (AMK) and rifampicin (RFP) alone and in VCM combinations were evaluated in the experimental rabbit meningitis caused by methicillin-susceptible Staphylococcus aureus (MSSA) or methicillin-resistant Staphylococcus aureus (MRSA). The mean concentrations of NFPC, VCM, AMK and RFP in cerebrospinal fluid (CSF) with MSSA meningitis exceeded the minimal bactericidal concentrations of MSSA during 8 hours therapy period. The mean CSF penetration rates of the 4 drugs during therapy were from 1% to 26% which are comparable to those observed in humans with meningitis. The median CSF bactericidal titers of RFP, VCM plus RFP, AMK, VCM plus AMK regimens were larger than 1:8 during therapy of MSSA meningitis study. In experimental MRSA meningitis, RFP and VCM plus RFP achieved titers greater than 1: 16 during therapy and at 24 hours. No statistically significant reduction in the CSF bacterial colony count was obtained with any of the antibiotic regimens in MSSA meningitis. By contrast, in 8 hours MRSA meningitis model, significant reductions in the number of MRSA were observed in animals treated for 8 hours with VCM plus RFP (P less than 0.01), RFP (P less than 0.05), and NFPC plus RFP (P less than 0.01). PMID- 3852898 TI - [Study on the drug sensitivity of multiple drug-resistant Staphylococcus aureus]. AB - Of clinically isolated Staphylococcus aureus showing resistance to multiple drugs among penicillins (PCs), cephem antibiotics (CEPs), aminoglycosides (AGs), minocycline (MINO) and fosfomycin (FOM), 64 strains were selected for the determination of MIC. Twenty-one drugs were used for the determination of MIC, with ampicillin (ABPC), cloxacillin (MCIPC), cephalothin (CET), cefazolin (CEZ), cefotiam (CTM), cefuroxime (CXM), cefamandole (CMD), cefotaxime (CTX), ceftizoxime (CZX), cefmenoxime (CMX), cefmetazole (CMZ), cefoxitin (CFX), latamoxef (LMOX), cefotetan (CTT), cefoperazone (CPZ), gentamicin (GM), dibekacin (DKB), tobramycin (TOB), amikacin (AMK), MINO, and FOM. MIC80 of each drug at 10(6) CFU/ml were: ABPC, MCIPC, CEZ, CTM, CXM, CTX, CZX, CMX, CFX, LMOX, CTT, CPZ, GM, DKB and TOB greater than 100 micrograms/ml; CET 50 micrograms/ml; CMD and AMK 25 micrograms/ml; CMZ 12.5 micrograms/ml; FOM 6.25 micrograms/ml; and MINO 0.78 micrograms/ml. The ratio of highly resistant strains with MIC greater than 100 micrograms/ml at 10(6) CFU/ml varied according to drug, and a difference tended to be seen in the degree of influence by resistant factors reflected upon MIC, e.g. drugs for which a high resistance of more than 50% was confirmed were ABPC, CXM, CZX, LMOX and TOB, and 20 approximately 30% MCIPC, CTM, CTX, CMX and CFX. MIC on MCIPC which has a correlation of structural activity with methicillin correlated with cephems (CEPs) resistance to a high degree, but many of the so called new CEPs showed resistance even to the strains with a low MIC on MCIPC. It was assumed that CEPs resistant strains have multiple drug resistant factors based on the fact that such strains showed multiple drug resistance.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3852899 TI - [Comparative clinical study of aspoxicillin and sulbenicillin in postoperative wound infections]. AB - A well-controlled comparative study was performed to evaluate efficacy, safety and utility of aspoxicillin (ASPC) as compared with sulbenicillin (SBPC) in the treatment of postoperative wound infections. Either 2 g of ASPC or 2 g of SBPC was administered to patients by intravenous drip infusion twice a day for 7 days. The following results were obtained: Overall clinical effectiveness rates were 82.5% (66/80) in ASPC group and 77.0% (57/74) in SBPC group, with no statistically significant difference between 2 groups. Final overall clinical improvement rates were 83.8% (67/80) in ASPC group and 81.1% (60/74) in SBPC group, with no statistically significant difference between 2 groups. As to bacteriological effectiveness, eradication rates of clinical isolates were 70.4% (38/54) in ASPC group and 74.4% (32/43) in SBPC group. There was no statistically significant difference in 2 groups. Side effects and abnormal laboratory findings were observed in 6 cases (6.7%) and 11 cases (12.4%) in ASPC group (89 cases) respectively, and 4 cases (4.4%) and 7 cases (7.8%) in SBPC group (90 cases) respectively. Especially severe adverse reactions were not observed, and there was no significant difference in the incidences of side effects and abnormal laboratory findings between 2 groups. As to overall clinical utility, utility rates were 77.5% (62/80) in ASPC group and 70.3% (52/74) in SBPC group. There was no statistically significant difference between 2 groups. These results may be indicated that ASPC is as useful as SBPC in the treatment of postoperative wound infections. PMID- 3852901 TI - [Primary nursing. 11. Resistance anticipated in the introduction of primary nursing]. PMID- 3852900 TI - [Chronic effect of norepinephrine, vasopressin and angiotensin II on urinary prostaglandin E and kallikrein excretion in conscious rats]. PMID- 3852902 TI - [Re-evaluation of daily care. 47. Terminal care. 2. Creation of a comfortable environment for a peaceful end]. PMID- 3852904 TI - [Non-verbal communication: communication with patients who are incapable of speech. Unlimited possibilities in communication: use of the eye in place of the ear]. PMID- 3852903 TI - [Non-verbal communication: communication with patients who are incapable of speech. Understanding and responding to signs by the patient]. PMID- 3852905 TI - [Non-verbal communication: communication with patients who are incapable of speech. Interpretation of subtle expressions by patients: through interactions with refractory neurologic diseases]. PMID- 3852906 TI - [Nonverbal communication: communication with patients who are incapable of speech. Nonverbal communication with emphasis on lip reading: emergency cases with intratracheal intubation]. PMID- 3852907 TI - [Non-verbal communication: communication with patients who are incapable of speech. Communication with a patient with motor aphasia]. PMID- 3852908 TI - [Non-verbal communication: communication with patients who are incapable of speech. Interpretation of silence by a schizophrenic patient]. PMID- 3852909 TI - [Non-verbal communication: communication with patients who are incapable of speech. Communication tailored to the patients' needs: a study on stroke patients]. PMID- 3852910 TI - [Nursing education of family members of stroke patients: a survey on their nursing knowledge before and after the training]. PMID- 3852912 TI - [A monologue by a nursing director: Ms. Kazuko Nishiyama of Nishikagawa Hospital, National Sanatoria]. PMID- 3852911 TI - [Home nursing of patients at the terminal stage of cancer: a lesson in case studies and future problems]. PMID- 3852913 TI - [Report from hospices. 11. Care of dying patients. Terminal care and humor]. PMID- 3852914 TI - [Clinical aspects of pain. 19. Nerve block in internal medicine: interruption of the pain conduction route]. PMID- 3852915 TI - [Clinical description of dementia. 7. Symptoms of dementia (6)]. PMID- 3852916 TI - [Counseling of patients. 10. Acceptance of the patient as he is, the basic attitude necessary in counseling. 1]. PMID- 3852917 TI - [Profile of a nurse. Ms. Michiko Kobayashi, an organizer of a self-study seminar within her hospital]. PMID- 3852918 TI - [Diary of a cancer patient. A positive attitude in spite of a loss of the voice. 11. The support of the family, friends, and the nursing personnel]. PMID- 3852919 TI - [Public health nursing in Indonesia. 11. Relationship with religion]. PMID- 3852920 TI - [Acute exacerbation of chronic disease: its significance]. PMID- 3852921 TI - [Acute exacerbation of hypertension--hypertensive crises]. PMID- 3852922 TI - [Transient cerebral ischemic attacks and related diseases]. PMID- 3852923 TI - [Acute exacerbation of ischemic heart disease]. PMID- 3852924 TI - [Acute exacerbation of chronic obstructive lung diseases]. PMID- 3852925 TI - [Acute exacerbation of gastro-duodenal ulcer]. PMID- 3852926 TI - [Acute exacerbation of chronic liver diseases]. PMID- 3852927 TI - [Acute exacerbation of diabetes mellitus]. PMID- 3852928 TI - [Acute exacerbation of chronic renal diseases]. PMID- 3852929 TI - [Prevention of acute exacerbation of chronic diseases and nursing--actions through patient education]. PMID- 3852930 TI - [Response to the patient during acute exacerbation of a chronic disease]. PMID- 3852931 TI - [Nursing of an ischemic cerebrovascular disorder patient during the acute stage- on acute stage nursing through 4 clinical cases of cerebral infarctions]. PMID- 3852932 TI - [Nursing of an ischemic heart disease patient during acute exacerbation]. PMID- 3852933 TI - [Nursing of a patient with chronic respiratory insufficiency during acute exacerbation--a case of bronchial asthma with poor understanding of the illness and repeated hospitalization]. PMID- 3852934 TI - [Nursing of diabetic patients with acute exacerbation--on the cause of exacerbation and support of self control]. PMID- 3852935 TI - [Nursing of a patient with gastroduodenal ulcer during acute exacerbation--2 cases with postoperative complications requiring emergency surgery]. PMID- 3852936 TI - [Nursing of a patient with chronic kidney disease during acute exacerbation- nursing of a patient with nephrotic syndrome during acute exacerbation]. PMID- 3852937 TI - [Preparation of monoclonal antibodies and NCC-ST-439]. PMID- 3852938 TI - [New therapy of cervical cancer--direct infusion of antineoplastic agents into the uterine artery]. PMID- 3852939 TI - [Management of abdominal injuries]. PMID- 3852941 TI - [Compliance--one phase of the physician-patient relationship]. PMID- 3852940 TI - [Management of the uretero-cutaneous fistula not requiring an ileal conduit or a catheter]. PMID- 3852942 TI - [Significance of rehabilitation in cancer patients]. PMID- 3852943 TI - [Organization and function of the rehabilitation team for postoperative cancer patients]. PMID- 3852944 TI - [Encouragement of cancer patients toward rehabilitation and nursing actions to maintain their positive attitude]. PMID- 3852945 TI - [Postoperative care and rehabilitation of patients with malignant brain tumors]. PMID- 3852946 TI - [Postoperative care and rehabilitation of patients with pharyngeal cancer--from preoperative orientation to the instructions given at discharge]. PMID- 3852947 TI - [Postoperative care and rehabilitation of patients with maxillary cancer]. PMID- 3852948 TI - [Postoperative care and rehabilitation of patients with tongue cancer]. PMID- 3852949 TI - [Postoperative care and rehabilitation of patients with lung cancer]. PMID- 3852950 TI - [Postoperative care and rehabilitation of patients with esophageal cancer]. PMID- 3852951 TI - [Postoperative care and rehabilitation of patients with stomach cancer]. PMID- 3852952 TI - [Postoperative care and rehabilitation of patients with liver cancer]. PMID- 3852953 TI - [Postoperative care and rehabilitation of patients with pancreatic cancer]. PMID- 3852954 TI - [Postoperative care and rehabilitation of patients with cancer of the large intestine]. PMID- 3852955 TI - [Postoperative care and rehabilitation of patients with prostatic cancer]. PMID- 3852957 TI - [Postoperative care and rehabilitation of patients with breast cancer]. PMID- 3852956 TI - [Postoperative care and rehabilitation of patients with bladder cancer]. PMID- 3852958 TI - [Postoperative care and rehabilitation of patients with malignant bone tumors]. PMID- 3852959 TI - [Assistance of postoperative cancer patients to combat social disadvantages- through the experience with urostomy patients]. PMID- 3852960 TI - [Requirements in home care of cancer patients--creation of an ideal environment for the final moment of the individual patient]. PMID- 3852961 TI - [Involvement of health personnel in organized patients' activities--follow-up of patients after total laryngectomy]. PMID- 3852962 TI - [Suggestion for home nursing. A winning essay selected at the 18th nursing essay contest]. PMID- 3852964 TI - [Science and individuals: universals and individuals in science]. PMID- 3852965 TI - [Science and individuals: science and individuals in nursing]. PMID- 3852963 TI - [Periphery of perinatology--from the rearing of infants under the age of one year to medical education. A discussion]. PMID- 3852966 TI - [Science and individuals: the goals of nursing research and ethical concerns]. PMID- 3852967 TI - [Research on the practice of team play in a children's ward]. PMID- 3852968 TI - [Research on the practice of team play in a children's ward. Discussion]. PMID- 3852969 TI - [Ethics in nursing practice and education]. PMID- 3852971 TI - [An analysis of nursing records as a means of transmission of information]. PMID- 3852970 TI - [In a corner of the laboratory. (3). A blind spot in grasp of the realities of logical argument]. PMID- 3852972 TI - [Re-evaluation of clinical training in nursing]. PMID- 3852973 TI - [Reflection on the activities of the past 20 years as a nursing instructor and an expectation on future improvement]. PMID- 3852974 TI - [Suggestion to nursing education. For true enrichment of education: science and technology in nursing education]. PMID- 3852976 TI - [Expectation of future nursing education]. PMID- 3852975 TI - [Suggestion to nursing education. Response to the arrival of a new "age of nursing"]. PMID- 3852977 TI - [Nursing education at the Japanese Red Cross at its founding]. PMID- 3852978 TI - ["A Theory for Nursing" by King--its theoretical structure and characteristics. A comment at completion of its translation]. PMID- 3852979 TI - [Study on educational technology: training in internal medicine. 6. Training in palpation, auscultation, and percussion as diagnostic technics]. PMID- 3852980 TI - [On nursing education. 40. Teaching of nursing technics in the future]. PMID- 3852982 TI - [Effects of observation of clinical scenes and on-the-job training in general nursing: introduction to nursing and learning for understanding of nursing]. PMID- 3852981 TI - [Structures and mechanisms of education and learning. 4. On education in social interactions]. PMID- 3852983 TI - [Reflection on refresher course activities of the past 10 years. Discussion]. PMID- 3852984 TI - [Nursing refresher courses in the past 10 years: with special reference to the contents of the studies]. PMID- 3852985 TI - [Planning of training at a nursery and its learning effect as part of a course in pediatric nursing]. PMID- 3852986 TI - [Concept of nursing associated with clinical tests]. PMID- 3852987 TI - [On school education. 5]. PMID- 3852988 TI - [Establishment of educational goals in nursing education]. PMID- 3852989 TI - [Designing of health education: a thought from the viewpoint of health care]. PMID- 3852990 TI - ["Tokyo Declaration"--at the meeting on "Toward Future Health and Medical Manpower: New Strategies in Education for the 21st Century" hosted by the WHO West Pacific Region Office]. PMID- 3852991 TI - [Comprehensive approach to health: a report on the 1st congress of the Japanese Health Science Organization held in Tokyo on November 1st and 2nd]. PMID- 3852992 TI - [Teaching of medical history-taking and observation of patients as a diagnostic teacher]. PMID- 3852993 TI - [On nursing education. 39. Education methodology in teaching of nursing technics]. PMID- 3852994 TI - [Structures and mechanisms of education and learning. 3. On home education]. PMID- 3852995 TI - [Designing, improving, and developing public health activities based on true desires of citizens and public health nurses. A panel discussion]. PMID- 3852996 TI - [Regional health examination of 1.5-year-old infants in Higashi-Yamato-shi: an evaluation based on children who have been examined at the age of 1.5 years and reported again at age 3]. PMID- 3852997 TI - [The role and function of the public health nurse in social rehabilitation of alcoholic patients (1). The current status of public health activities and their expected role]. PMID- 3852998 TI - [From re-evaluation to observation of public health nursing activities. A "core" concept to incorporate cure and care: a summary of the series]. PMID- 3852999 TI - [Public health nurses of the Santama area. 6. Affection and trust of the residents of Okutama-machi: a lesson in enthusiasm and creative actions of Ms Sueko Ono. Interview by K. Mogami]. PMID- 3853000 TI - [Community-based public health nursing education at Shimane Prefecture training of public health nurses to support residents' lives]. PMID- 3853002 TI - [Clinical training of public health nursing students at Shimane Prefecture: thoughts and experiences of public health nurses assigned to the area]. PMID- 3853001 TI - [Theoretical background of community-based public health nursing: structuring of clinical training related to actual practice. Discussion]. PMID- 3853003 TI - [Community-based public health nursing education at Shimane Prefecture. 2 notable items to be remembered: a former student's comment]. PMID- 3853004 TI - [Community-based public health nursing education at Shimane Prefecture. Importance of the scientific view on health: a former student's comment]. PMID- 3853005 TI - [Community-based public health nursing education at Shimane Prefecture. Practice based on the learning experiences in training: a former student's comment]. PMID- 3853006 TI - [Community-based public health nursing education at Shimane Prefecture. Psychological stimuli mutually supplied among public health nurses to achieve common goals: a former student's comment]. PMID- 3853007 TI - [Community-based public health nursing education at Shimane Prefecture. Priority area activities as a traction force in public health nursing: a former student's comment]. PMID- 3853008 TI - [Priority area activities in public health nursing: a discussion]. PMID- 3853009 TI - [Comprehensive theory of public health based on an independent concept: unification of learning, practice and research]. PMID- 3853010 TI - [Re-evaluation and close observation of individualized care: a process of understanding the fundamentals. A discussion on the achievements of the Tama Public Health Study Group in the past 3 years]. PMID- 3853011 TI - [Evaluation of nursing actions directed toward alcoholic patients with special care given to the patients' emotions--nursing actions to encourage psychological independence]. PMID- 3853012 TI - [Study of the subjectivity of the care provider--through the re-evaluation of individualized care]. PMID- 3853013 TI - [Designing and utilization of a chart in individualized care]. PMID- 3853014 TI - [Plan for the use of "two-in-one total information" in information exchange in public health care: restoration of total communication unhampered by the roles]. PMID- 3853015 TI - [A survey on the status of aged, bedridden patients--a study on bedridden patients under the jurisdiction of the Central Public Health Clinic, Nagasaki City]. PMID- 3853016 TI - [Response of the fetus to birth]. PMID- 3853017 TI - [Reorganization of tertiary schooling--the professional training of midwives]. PMID- 3853018 TI - [Greetings from the Perinatology Congress]. PMID- 3853019 TI - [Scandinavian Federation of Midwives]. PMID- 3853020 TI - [The Finns continue their work in Uganda]. PMID- 3853021 TI - [Can the mental condition of the patient affect the safety of anesthesia? Music and suggestion diminish anxiety and tension]. PMID- 3853022 TI - [Legal knowledge for nurses (4). Illness and work in conflict]. PMID- 3853023 TI - [Shortened working time. Reduction implies personnel increase]. PMID- 3853025 TI - [Elisabeth Kubler-Ross in Lausanne. Learning life thanks to the dying. Interview by Brigitte Kocher]. PMID- 3853024 TI - [The skin, touch, care. Do we know how to do good with our hands?]. PMID- 3853026 TI - [The public health nurse: a social role of prime importance]. PMID- 3853027 TI - [Fallot's tetralogy]. PMID- 3853028 TI - [Which possibilities do ambulatory heart groups offer?]. PMID- 3853030 TI - [Living with less salt--but how?]. PMID- 3853029 TI - [How healthy are ski descents and cross-country skiing really?]. PMID- 3853031 TI - [Heart and circulation]. PMID- 3853032 TI - Modifying the eating behavior of young children. AB - A nutrition education curriculum was developed, based on a social learning model, that emphasized the importance of a low-salt, low-fat, and increased complex carbohydrate diet for cardiovascular health. The curriculum was pilot-tested in eight third and fourth grade classrooms. Students were exposed to cartoon character role models, were reinforced for dietary changes, and practiced relevant behavioral skills. Students in eight other third and fourth grade classrooms served as controls. At posttest, students participating in the nutrition education program reported a significant reduction in consumption of foods high in fat and salt and an increase in consumption of complex carbohydrates. These assessments were confirmed by food selection measures and by 24-hour food recalls. Students in the control classrooms did not report these eating pattern changes. PMID- 3853033 TI - Health and wellness: a conceptual differentiation. AB - Confusion exists regarding the terms health and wellness. This article presents a conceptualization of health as consisting of social, mental, emotional, spiritual, and physical components; a conceptualization of wellness as the integration of these components; and a conceptualization of high-level wellness as the balance of these components. Implications of these conceptualizations for health education are presented. Iatrogenic health education disease is discussed and a distinction is made between health education and health indoctrination. PMID- 3853034 TI - Health needs of high school students in Detroit. AB - This project identified the health care needs and information concerns of high school students who were potential patients for a new adolescent health clinic in Detroit. Questionnaires assessed current health problems, information needs, and factors affecting use of health services by 613 predominantly black, urban, high school students at a regional high school (n = 187, X age = 16.8) and a neighborhood high school (n = 426, X age = 15). Reported health problems included eating the proper foods, school problems, acne, depression, and headaches. Expressed health information needs included skin problems, drugs, gender, and birth control. Differences among school, age, and gender were noted. Subjects preferred continuity of provider care and receiving health information by private, direct, patient-physician contact. The findings were used in staff training and in program planning for the adolescent health clinic for high-risk youth. PMID- 3853035 TI - Health problems of migrant children. AB - This investigation examined the incidence and types of health-related problems of migrant children as identified by school health medical personnel. Results indicated 615 of 1,000 (61.5%) children in the sample has health-related problems. The incidence rates were physical (22%), visual (10.8%), dental (10.4%), auditory (7.5%), immunization (5.5%), and nutritional problems (5.5%). Implications of the findings for school health personnel are discussed. PMID- 3853036 TI - A comparison of two HRAs for use in the university classroom. AB - Current interest in health and wellness combined with the proliferation of Health Risk Appraisals (HRAs) has made classroom use of such instruments increase rapidly in recent years. This study compared two HRAs in terms of appraised age, attainable age, the list of positive lifestyle factors for reinforcement, the list of lifestyle factors to be changed, and the variables of desirable weight and blood pressure as well as observed differences in display and unique comment characteristics. One hundred and thirty-three students at a large southeastern university comprised the sample. Though no significant differences were found in appraised age or attainable age, significant differences existed in the number of positive lifestyle changes listed, number of suggested lifestyle changes to be made by students, and several observable differences in display including graphics and tables. Implications for health educators are noted. PMID- 3853037 TI - Cross-cultural validation of a three component alcohol attitude scale. AB - Attitudes and their measurement constitute important aspects of the study of human behavior regarding the use and abuse of alcoholic beverages. A Three Component Alcohol Attitude Scale was developed to measure three attitude components separately and in total. This study validated the scale utilizing a cross-cultural approach. Hypotheses were formulated on the assumption that, if the scale was valid, all 54 items in each of the instrument's three components, as well as the total scale, would discriminate significantly between a sample of US university students and their Egyptian counterparts in terms of their attitudes toward alcohol use and abuse. The scale was translated into Arabic, the English and Arabic scales then were administered to a sample of 400 university students at two comparable major universities in the US and Egypt. The data were subjected to Pearson's correlation, t-test, stepwise discriminate analysis, split half, and Cronbach (alpha) reliability. Forty-nine of 54 items, each of the three components, and the total instrument discriminated significantly between US students and their Egyptian counterparts, confirming the previous validation of the scale. PMID- 3853038 TI - Sexuality education: a more realistic view of its effects. AB - Sexuality education has been proffered as a partial solution to a variety of adolescent sexual problems. Research demonstrates that programs increase knowledge, but have little direct impact on values and attitudes, actual sexual behavior, use of birth control, and teen-age pregnancy. This article compares the effects of sexuality education programs with the results of other educational programs and discusses why sex education programs may increase knowledge, but may not effectively change behavior. Finally, good reasons to offer sexuality education are discussed. PMID- 3853039 TI - Enriching professional preparation in school health through international study. AB - This article describes how to develop, market, implement, and evaluate an international health education travel study course. The experiences described reflect an international travel study tour of England and Scotland conducted by the authors with 25 undergraduate and graduate students. The trip enhanced both the appreciation and professional knowledge of the students of a variety of perspectives in the health area. International study provides unique opportunities for student development and contributes significantly to the quality of professional preparation of school health personnel. These experiences complement traditional professional preparation programs and can result in improved health instruction and health services in schools. PMID- 3853040 TI - Calcium intake: a lifelong proposition. AB - The need for significant amounts of calcium in the diets of growing children has been well-documented. However, recent evidence suggests that calcium continues to play a vital role in the body throughout life and that current RDAs for calcium need to be increased. This article reviews the current problem of low calcium intake in the United States among all age groups, the role of calcium in the formation and maintenance of bone mass, and major factors influencing calcium absorption. The specific problem of calcium deficiency and osteoporosis is discussed and current recommendations for RDAs are provided. The importance of the individual building as much bone mass as possible prior to the age of 30 is discussed. PMID- 3853041 TI - Community organization in a school health education program to reduce sodium consumption. AB - This paper describes the important role of community organization in providing the enabling and reinforcing factors necessary for students to adopt dietary behavior changes recommended in a school health education program for cardiovascular health. The "Hold the Salt!" program was designed to teach sixth grade students and their families about the link between high sodium diets early in life and increased risk for cardiovascular disease, and to significantly reduce pupils' intake of high-sodium snacks. The program consists of four educational components: a classroom cafeteria curriculum unit built around a board game; parent outreach; health provider reinforcement; and community support. The program was tested in an experimental group (n = 55) of urban, black, sixth grade students, whose knowledge and behavior changes were compared to a control group (n = 23) with similar demographic statistics. Data collected before and after the school program showed a 20% increase in knowledge about sodium and health (p less than .01) and a 33% decrease in reported high-sodium snack consumption (p less than .05) in the experimental group compared to no significant knowledge or reported behavior changes in the control group. The program was piloted for two years in Baltimore City elementary schools, then adopted by the Maryland State Dept. of Education for dissemination as part of the Home Economics curriculum in all of the state's middle schools. PMID- 3853042 TI - Parent and teacher perception of depression in children. AB - A descriptive study correlated depression in children with parental perceptions and with teacher report card ratings of school achievement and adjustment. Two hundred and twenty children, age six-to-12 years, and parents of approximately half the sample, were interviewed using the Children's Depression Rating Scale (CDRS). Symptoms of depression were discovered in 10% of the children. Sixty eight percent of parents were unaware of their child's depression. Parents were most aware of sleeping problems, physical complaints, and academic achievement and least aware of social withdrawal, tiredness, depressed feelings, and suicidal ideations. Most depressed students achieved at grade level in reading and math, but they received lower grades for effort than nondepressed students. Depression was associated significantly with inability to work and play, both alone and in a group. PMID- 3853043 TI - Personal assessment of stress factors for college students. AB - During a four-year period, an instrument to identify stress was developed from items suggested by students from a search of related literature, and from a jury of experts. The 100-item instrument, including four subcategories, was administered to more than 1,200 students at 23 colleges. Means were computed to the total test, subcategories, and individual items according to frequency and intensity. Responses of men and women were sufficiently different to warrant establishing separate means; women scored higher than men. The degree of stress reported by women decreased with each grade level, but peaked in the sophomore year for men and declined thereafter. Academic factors were cited most frequently as a source of stress, while Relationships and Home and Community factors ranked high in stress intensity. The instrument provides a valuable tool to assist students identify factors that could be targeted for stress management. The instrument also could be used as a tool for further stress management research. PMID- 3853044 TI - Hepatitis A in day care centers. AB - A dramatic increase in the number of preschool children in US day care facilities has presented new problems in infectious disease control, particularly with agents transmitted through the fecal-oral route. As the school health field broadens to encompass the day care setting, such issues are becoming increasingly important for school health practitioners. Hepatitis A has attributes favoring day care-related reservoirs and outbreaks. The anicteric course of infection in young children usually does not alert the school health practitioner to infectious hepatitis. This article reviews epidemiologic and clinical features of hepatitis A in day care centers. Control measures including immunoglobulin prophylaxis for contacts of infected individuals and rigid attention to hygienic standards are examined, and suggestions for designing day care systems in communities are discussed. PMID- 3853045 TI - Development of a short obesity knowledge scale using four different response formats. AB - This study examined the validity and reliability of a short obesity knowledge scale. A 12-item test was developed around the four aspects of obesity: etiology of obesity; diseases related to obesity; weight loss techniques; and general information on obesity. Four forms were developed: true/false, true/false/uncertain, multiple choice, and Likert response. Comparisons of the four test formats with 187 subjects revealed a variety of internal reliabilities, stability reliabilities, item discriminations, and readability scores. PMID- 3853046 TI - Message source credibility in drug education. AB - A questionnaire was administered to 1,734 university students and 381 high school students enrolled in drug education programs, surveying student opinions about the credibility of various proposed message sources. Five sets of proposed message sources were presented to each subject; each set consisted of one proposed source category that did not require a college education, one source that required a baccalaureate degree, and one that was a doctoral-level, university-trained professional with relevant experience. "Doctoral-level, university-trained professionals with relevant experience" was found to be the message source deemed most credible by both groups of students. PMID- 3853048 TI - Health care for the aged. PMID- 3853047 TI - What every nurse (person) should know about wills. PMID- 3853049 TI - Autonomy and paternalism: two goals in conflict. PMID- 3853050 TI - Process and context: hidden factors in health care decisions for the elderly. PMID- 3853051 TI - Family responsibility initiatives and justice between age groups. PMID- 3853052 TI - Enforcement of quality nursing home care in the legal system. PMID- 3853053 TI - School-age children's conceptions of the heart and its function: Part I: Review of literature. AB - A study was conducted to learn more about school-age children's conceptions of the heart and its function (kotchabhakdi, 1984). This report presents the review of literature pertinent to the study. The review includes three areas: congenital heart disease in children, cognitive development and cognitive function of school age children, and children's conceptions of body organs. Part II, namely, methodology and findings of the study will be reported in Monograph 15, the Winter 1985 issue of this Journal. PMID- 3853054 TI - Maternal psychological conflicts associated with the birth of a retarded child. PMID- 3853055 TI - A meta-analysis of informing mothers concerning the sensory and perceptual capabilities of their infants: the effects on maternal-infant interaction. PMID- 3853056 TI - Ambulatory blood pressure monitoring: limitations and clinical uses. PMID- 3853057 TI - [Raynaud's disease]. PMID- 3853058 TI - [Vascular parkinsonism]. PMID- 3853059 TI - [Art therapy in the combined treatment of mental diseases]. PMID- 3853060 TI - [Falconer-Weddell costoclavicular syndrome]. PMID- 3853061 TI - [Elimination of deformities in the ankle joint and foot of infants in the 1st year of life]. PMID- 3853062 TI - [Assessment of the work efficiency of nurses]. PMID- 3853063 TI - [Role of early diagnosis in the rehabilitation of periodontitis patients]. PMID- 3853064 TI - [Vacuum therapy in treating periodontitis patients]. PMID- 3853065 TI - [Tapeto-retinal abiotrophy]. PMID- 3853066 TI - [Training of sisters of mercy at the Odessa Medical First Aid Station during World War I]. PMID- 3853067 TI - [Vulvovaginitis in girls]. PMID- 3853068 TI - [Care of the hair]. PMID- 3853069 TI - [Uterine myoma and pregnancy]. PMID- 3853070 TI - [The diving reflex may save one]. PMID- 3853071 TI - [Alcohol and progeny]. PMID- 3853072 TI - [Effect of diet therapy on the body]. PMID- 3853073 TI - [Acoustic neuritis (cochlear neuritis)]. PMID- 3853074 TI - Heavy metal ion-nucleic acid interaction. AB - All the heavy atoms that have so far been found to provide good derivative crystals do so by forming direct coordination bonds to either the backbone or the bases of nucleic acids in an environment where the coordination shell can be further stabilized by several hydrogen bonds. A summary of coordination sites is shown in Fig. 5 and listed below: Lanthanide ions such as Sm(III), Lu(III), Pr(III), Eu(III), Tb(III), Dy(III), Gd(III) form coordination bonds to oxygen atoms of two adjacent phosphates or to phosphates from different parts of the chain. The N-7 position of guanine is the most common site for heavy atoms. N-7 can become a ligand to many metal ions such as Os(VI) from OsO3 X (Py)2, Pt(II) from square-planar cis- or trans-dichlorodiammine complexes, Co(II), and Mn(II). The O-4 position of uracil can be a binding site for the Hg atom of hydroxymercuryhydroquinone-O-O-diacetate. The N-7 of adenine and the N-4 of cytosine in the base sequence A-C can be a binding site for an octahedral platinum(IV) from K2PtCl6. PMID- 3853075 TI - Schematic drawings of protein structures. PMID- 3853076 TI - Care of the small baby on the postnatal ward. PMID- 3853077 TI - 5 am--the small, terrible hours. PMID- 3853078 TI - A new hypothesis on the etiology of essential hypertension and pre eclampsia. AB - Initial reduction in renal blood flow may be one of the etiological factors involved in essential hypertension. The resultant hypertension, acting as a compensatory mechanism, brings about a readjustment of flow to mask the initiating factor. This reduction in renal blood flow may be brought about by mechanical compression of renal artery by one of the abdominal viscera, resulting in partial occlusion of the renal artery. Factors known to be associated with essential hypertension, like obesity, probably increase the possibility of such endogenous compression of the renal arteries. A similar mechanism is proposed for the pathogenesis of pre eclampsia. PMID- 3853079 TI - Theoretical mechanisms for synthesis of carcinogen-induced embryonic proteins: XIV. Mutational and non-mutational mechanisms as subsets of a more general mechanism. Part C. A defined cancer mutation. AB - The results of applying a mechanism of ethionine-induced embryonic gene derepressions to explain similar features found in hereditary tyrosinemia have been extended to a well defined cancer mutation. In all three cases, the described mechanism is compatible with the explanation for the etiology of embryonic like phenotypic expressions in cells and potentially for the carcinogenic process. The essence of the formulated process for a human bladder carcinoma mutation in the ras gene for a protein phosphokinase states that a specific proto-oncogene is mutated to an oncogene by various known processes. The protein phosphokinase that has an altered specificity resulting in anomalous phosphorylation of important regulating proteins by a non-mutation mechanism, i.e. by ethionine, would produce the same effect in a hypomethylated state of deoxyribonucleic acid causing an embryonic type protein phosphokinase gene to become activated. These embryonic oncogenes are supersensitive to methylation control mechanisms--thus the link between non-mutation and mutation type mechanisms. PMID- 3853080 TI - Inflammation initiates cancer by depleting stem cells. AB - According to the theory presented herewith, neoplasia results solely from stem cell depletion. Besides serving as tissue progenitors, stem cells are postulated to secrete a vital substance 'A' necessary for proper tissue function. Carcinogens interfere with 'A' production mainly by destroying stem cells and since the latter are not replenished, less 'A' is produced. In order to repair the deficiency, the organism grows a special organ, the neoplasm, dedicated to produce a substitute, denominated here as substance 'B'. Since carcinogens continue depleting stem cells, the neoplasm has to grow more and more in order to keep up with the demand, until reaching a stage of decompensation when the harm inflicted by it is greater than its benefit. Any stem cell depleting substance or process e.g. ablation, chemotherapy and inflammation, is regarded here as a carcinogen. Even animal tumor viruses are postulated here to exert their harm mainly by depleting stem cells. Protracted inflammation e.g. ulcerative colitis or cystic mastopathy, hits stem cells and is followed therefore by neoplasia. Age specific incidence rates of such pathologies resemble precursor-successor curves of tracer kinetics. The precursor inflammation hits young adults, while its successive neoplasia is more prevalent in older individuals. Although most age specific curves of adult cancers are unimodal, at least five are bimodal, resembling precursor-successor curves. These are: Hodgkin's disease, seminoma, nasopharyngeal and retroperitoneal tumors and cancer of bone and joints. It is suggested here that these age specific curves are mixtures of two pathologies, an inflammatory, which is prevalent in young persons, followed by neoplasia. PMID- 3853081 TI - Selective attention and the brain: a hypothesis concerning the hippocampal- ventral striatal axis, the mediation of selective attention, and the pathogenesis of attentional disorders. AB - The mechanisms mediating selective attention are not currently known. Dysfunctional selective attention is a common and prominent finding in a variety of medical and psychiatric conditions. A hypothesis is developed that efferents from the hippocampal formation are the final common pathway of processes which determine the noteworthiness of both exteroceptive and interoceptive stimuli, and that dysfunction of these efferents is a common pathway for a variety of anatomical, electrophysiological, and neurochemical lesions. This hypothesis suggests that clinical syndromes of disordered attention may be caused by various lesions of efferent connections from hippocampal formation to nucleus accumbens. The hypothesis further addresses the possibility that the threshold of hippocampus to various classes of stimuli may change on a diurnal and phasic basis. Experimental evidence that bears on the hypothesis is reviewed and experimental implications of the hypothesis are explored. PMID- 3853082 TI - How might demyelinating disorders and glaucoma modify synaptic function? AB - Latencies of visually evoked potentials (VEPs) tend to be abnormally long in multiple sclerosis (MS). Similar VEP delays are seen in glaucoma. Such delays could result in part from reduced intensities of synaptic inputs at post-retinal synaptic relays, and defects of axoplasmic transport might be one cause for this. The effective rate of synaptic activation of a given postsynaptic neuron can be decreased either by reducing the arrival-rate of presynaptic action potentials (e.g., by complete or partial blockage of conduction in some presynaptic axons), or by reducing the quantity of neurotransmitter released per action potential (e.g., as a consequence of presynaptic neurotransmitter depletion). It is proposed that in both glaucoma and MS, delayed VEPs may result from either or both of these mechanisms. Firstly, loss and functional impairment of optic nerve axons occurs in each disorder. Secondly, in glaucoma the increased intraocular pressure tends to block the rapid anterograde axoplasmic transport (RAAT) which brings neurotransmitter supplies to the axon terminals. This could result in neurotransmitter depletion in the lateral geniculate relay, decreased synaptic effectiveness of remaining normally-conducting optic nerve axons, and thereby increased VEP latencies. RAAT is also blocked by demyelinated lesions that have been produced experimentally by injection of diphtheria toxin. If it is impaired by the demyelinated plaques of multiple sclerosis, then VEP slowing by a similar presynaptic depletion mechanism could ensue. PMID- 3853083 TI - The blood-vessel thrust theory of tooth eruption and migration. AB - The Blood-Vessel Thrust Theory is a new hypothesis regarding the forces which produce the normal eruption of teeth, and the movement of 'nonerupted' teeth through bone away from their normal position in the jaws. It points out that the flow of blood through the vessels of the dental pulp, and of the tissues surrounding the tooth, must produce hydrodynamic and hydrostatic forces within the blood vessels, and that these forces have a resultant towards the tooth crown, thus causing the tooth to move, crown first, through the bone during normal eruption or abnormal tooth migration. PMID- 3853084 TI - Mechanisms of atherogenesis: endothelial hypoxia proposed as the major initiator. AB - The major atherosclerosis risk factors hypertension, diabetes, hyperlipidemia and cigarette smoking are examined along with blood vessel anatomy, hemodynamics, histopathology and known experimental results. A common factor of blood vessel hypoxia, specifically endothelial and intimal hypoxia, is shown to exist. Arguments are presented suggesting endothelial hypoxia as the commonest initiating event for atherosclerosis. Cholesterol appears to be a secondary and opportunistic villain. Explanations are given for the lack of increased atherosclerosis risk in familial lipoprotein lipase deficiency (type I hyperlipoproteinemia) and for the increased incidence and severity of atherosclerosis in the human abdominal aorta in comparison with the thoracic aorta. It is suggested that effective prevention of atherosclerosis can be accomplished by lowering blood pressure and blood glucose, among others, even though these may be within acceptable normal limits. Suggestions are given for experiments to test the hypothesis of hypoxia being the major initiating factor in atherosclerosis. PMID- 3853085 TI - Could the loss of regulation of genetic expression in cancer cells be used to cause their necrosis? AB - In cancer cells the control over the genetic message involved in the induction of mitosis is irreversibly lost. This fact is indicated by certain phenomena displayed by cancer cells under restricted nutritional conditions. Cells transformed by DNA viruses (which stabilize "p53") keep on cycling and die. In starving cells at the inside of tumors the synthesis of pre-rRNA still proceeds while all other anabolic processes are already at a standstill. The reason is that glutamine, glycine and aspartate are channelled into the enzymatic pathways for the synthesis of nucleosides: thus, protein synthesis is denied those aminoacids. Such situations might be imitated through the administration of excess nucleosides and (within limits) the simultaneous restriction of some selected aminoacids. DNA replication depends on the stabilization of p53, but an accumulation of pre-rRNA might occur, which ultimately might be harmful for cancer cells. Several ways to improve this rationale might be tested on cultured cells and on research animals. They include the destruction of methionine with bacterial enzymes, or the addition of ornithine, a precursor of putrescine, which is an important factor of DNA and pre-rRNA synthesis. PMID- 3853086 TI - Application of the adaptation framework in LPN program: a project. PMID- 3853087 TI - Motivation. PMID- 3853088 TI - Pre- and post-operative visiting: a view from the wards. PMID- 3853089 TI - Take political action. PMID- 3853090 TI - Increase your professional networth. PMID- 3853091 TI - Professional/technical--today's nurses are making their choice. PMID- 3853092 TI - Partners--school and business join forces to enhance education. PMID- 3853093 TI - Interview: Carol Garant, RN, MSN. PMID- 3853094 TI - Our own worst enemy--the female profile. PMID- 3853095 TI - Show what you know. Writing for popular publication. PMID- 3853096 TI - How valuable is confidentiality? PMID- 3853097 TI - Royal College of Nursing. Perspective. PMID- 3853098 TI - Time we adopted a policy of positive discrimination in favour of night nurses. PMID- 3853100 TI - True worth. PMID- 3853099 TI - Boost pay to match nurses' skills says RCN. PMID- 3853101 TI - Royal College of Nursing. Needs of nurses. PMID- 3853103 TI - Frightening future if change is not effected. PMID- 3853102 TI - A little warmth can keep an old person alive. PMID- 3853104 TI - Royal College of Nursing. College all set for an active 1986. PMID- 3853105 TI - Emotive words are cheap and won't save lives--but more commitment could. PMID- 3853106 TI - The profession must be aware of what is too important to be compromised in nursing. PMID- 3853107 TI - A research appraisal checklist for evaluating nursing research reports. PMID- 3853108 TI - Collaboration braces schools against eroding resources. PMID- 3853109 TI - Community health nurses battle economic crunch by matching services to needs. PMID- 3853110 TI - Helping students succeed despite learning disabilities. PMID- 3853111 TI - Disaffiliation: O.I.I.Q. (Ordre des Infirmieres et Infirmiers du Quebec) withdraws from CNA (Canadian Nurses' Association). PMID- 3853112 TI - [Beyond the patient]. PMID- 3853113 TI - [The school--one obstacle too many for the child experiencing psychosocial problems]. PMID- 3853114 TI - [Why do men die younger?]. PMID- 3853115 TI - [Milumil--to be proscribed for infants under 3 months old]. PMID- 3853117 TI - Nurses lead the way. PMID- 3853116 TI - [A first in Canada--construction project for a francophone research center in mental health]. PMID- 3853118 TI - Meet the welding processes. PMID- 3853119 TI - Two disciplines fighting common problems. Interview by Michael Bangs. PMID- 3853120 TI - Superhero? PMID- 3853121 TI - Occupational health services in the NHS. PMID- 3853122 TI - China: making up for lost time. PMID- 3853124 TI - The role of the community health nurse in environmental health. PMID- 3853123 TI - What to do if. PMID- 3853125 TI - Car seat modification for children under treatment for congenital dislocated hips. PMID- 3853126 TI - Reducing patient falls. PMID- 3853127 TI - The elderly orthopaedic patient with Alzheimer disease. PMID- 3853128 TI - Back injury: a preventable occupational hazard. PMID- 3853129 TI - Sleep deprivation in the hospitalized patient. PMID- 3853130 TI - Car loans: why rates may rise. PMID- 3853131 TI - Wound care: wounds that won't heal. PMID- 3853132 TI - Peaches and cream. PMID- 3853133 TI - Health visiting: the vulnerability factor. PMID- 3853134 TI - Don't expect miracles. PMID- 3853135 TI - District nursing: day in the life of a DN. PMID- 3853136 TI - Training house in order. PMID- 3853137 TI - Quality that counts. Interview by Pauline Chudley. PMID- 3853138 TI - In praise of overlap. PMID- 3853139 TI - In need of a good night's sleep. PMID- 3853141 TI - Cosmic nursing: a guide to the stars. PMID- 3853140 TI - Sleepless nights: when duty calls. PMID- 3853142 TI - Neonatal tetanus. PMID- 3853143 TI - Myocardial infarction. PMID- 3853144 TI - From filing cabinet to microcomputer. PMID- 3853145 TI - Care about food: the indigestible facts. PMID- 3853146 TI - Systems of life No 131. Setting up the systems. 31. Development of the ear. PMID- 3853148 TI - Continence. PMID- 3853147 TI - A matter of life or death. PMID- 3853149 TI - Continence. Clothing for independence. PMID- 3853151 TI - Continence. Fact and fiction. PMID- 3853150 TI - ABC of incontinence. PMID- 3853152 TI - Continence. Catheter rejection. PMID- 3853153 TI - Continence. Introducing the nursing diagnosis. PMID- 3853154 TI - Disasters: survivors. PMID- 3853155 TI - Seat-belts: clunk click. PMID- 3853156 TI - Housing: home truths. PMID- 3853158 TI - Non-nursing duties: the professional ancillary. PMID- 3853157 TI - Rehabilitation: the art of restoration. PMID- 3853159 TI - Behaviour therapy nursing: putting theory into practice. PMID- 3853160 TI - A night out on crutches. PMID- 3853161 TI - Prolapsed intervertebral disc. PMID- 3853162 TI - Pressure sores: Tegaderm pouch dressings. PMID- 3853163 TI - Pressure sores: a risk assessment card. PMID- 3853164 TI - Spotlight on Children. Journal of the Association of British Paediatric Nurses. PMID- 3853165 TI - Spotlight on children. The silent victims. PMID- 3853166 TI - Spotlight on children. Epidermolysis bullosa. PMID- 3853167 TI - Addictive attitudes. PMID- 3853168 TI - Action men. PMID- 3853169 TI - Insurance: running for cover. PMID- 3853170 TI - Nursing AIDS: situations vacant. PMID- 3853171 TI - Violence: base control to sister. PMID- 3853172 TI - Care in a cold climate. PMID- 3853173 TI - Project 2000: pointing a way forward. PMID- 3853174 TI - Project 2000: all change. PMID- 3853176 TI - A resistance movement. PMID- 3853175 TI - Project 2000: nurse of all trades? PMID- 3853177 TI - Silastic implants in great toe joints. PMID- 3853178 TI - Getting the balance right. PMID- 3853179 TI - The graduate's progress. PMID- 3853180 TI - Leading the learners. PMID- 3853181 TI - Tonsillectomy through a child's eyes. PMID- 3853183 TI - The Journal of Infection Control Nursing. PMID- 3853182 TI - 'My name is Derek'. PMID- 3853184 TI - Journal of Infection Control Nursing. Down the drain? PMID- 3853185 TI - Journal of Infection Control Nursing. Urinary drainage in patients with spinal injuries. PMID- 3853186 TI - Journal of Infection Control Nursing. A pest of a problem. PMID- 3853187 TI - Teach yourself. PMID- 3853188 TI - Patient abuse: when to blow the whistle. PMID- 3853189 TI - On the move: going places. PMID- 3853190 TI - Harmony is strength. PMID- 3853191 TI - Genetics: counselling for the future. PMID- 3853192 TI - Genetics: taking the risk. PMID- 3853193 TI - Dental care during pregnancy. PMID- 3853194 TI - Are you using the nursing process? PMID- 3853195 TI - Budgeting for beginners: outstanding commitments. PMID- 3853196 TI - Systems of life. No 132. Setting up the systems. 32. PMID- 3853198 TI - Project 2000: tomorrow's world. PMID- 3853197 TI - Project 2000: a framework for care. PMID- 3853199 TI - Quest: NT's educational supplement. PMID- 3853200 TI - The getting of wisdom. PMID- 3853202 TI - [Nurses as a social force]. PMID- 3853201 TI - A global perspective. PMID- 3853203 TI - [ICN's 18th Quadrennial Congress 15-20 June 1985, Tel Aviv, Israel]. PMID- 3853204 TI - A case presentation on porphyria. PMID- 3853205 TI - Down your way: Sandwell. PMID- 3853206 TI - Full-time father. PMID- 3853207 TI - Student nurses in Hong Kong. PMID- 3853208 TI - Harnessing the winds of change. PMID- 3853210 TI - Finance. 6. Looking forward to retirement. PMID- 3853209 TI - Health education: opportunities in general practice. PMID- 3853211 TI - Midwifery: the familiar round. PMID- 3853212 TI - Death 2. Comfort and pain relief. PMID- 3853213 TI - A & E nursing. Parents' perception of care. PMID- 3853215 TI - Research? As clear as mud. PMID- 3853214 TI - The psychiatric nurse's viewpoint. PMID- 3853216 TI - How to reduce stress. PMID- 3853217 TI - Adult respiratory distress syndrome. PMID- 3853218 TI - Hollow ideals. PMID- 3853219 TI - Methicillin-resistant Staphylococcus aureus at children's hospitals in the United States. AB - Although methicillin-resistant Staphylococcus aureus (MRSA) has emerged as an important pathogen in hospitalized adults in the United States, reports of MRSA in pediatric patients have been infrequent. To determine the frequency at which MRSA is isolated from children, we surveyed the directors of microbiology at all acute care children's hospitals in the United States, and 57 of 67 (85%) laboratory directors responded to a mailed questionnaire. Those not testing S. aureus for methicillin susceptibility were excluded from the analysis. Of 53 (57%) laboratory directors 30 reported that MRSA had been isolated from patients in their hospitals. Between 1973 and 1981 the proportion of hospitals isolating MRSA increased significantly; 1 of 53 hospitals reported MRSA in 1973 compared to 20 of 53 hospitals in 1981 (P less than 0.001). Large hospitals (greater than or equal to 200 beds) reported MRSA isolates more frequently than did small hospitals (less than 200 beds) (P = 0.007). No association was found between the isolation of MRSA and the presence of burn or intensive care units, residency training programs or rotation of residents to other hospitals. MRSA isolation varied by standard metropolitan statistical area and geographic region. These data show that the isolation of MRSA is increasing in frequency in pediatric patients and that the reporting of MRSA from children's hospitals varies by hospital size, standard metropolitan statistical area and region. Since MRSA causes significant morbidity and mortality, further studies are necessary to identify the risk factors for MRSA infections and to develop effective control measures. PMID- 3853220 TI - Nursing and medicine: complementary modes of thought and action. PMID- 3853221 TI - Motivation: vehicle for public health nursing interventions? PMID- 3853222 TI - The use of partners in undergraduate public health nursing. PMID- 3853223 TI - Public health nursing for America's children. PMID- 3853224 TI - Health status and resources of recently bereaved older persons. PMID- 3853225 TI - Folk healing among Hispanic Americans. PMID- 3853226 TI - New North Dakota law lets nurse open practice. PMID- 3853228 TI - Identity: crisis in nursing. PMID- 3853227 TI - AIDS update. PMID- 3853229 TI - Thoughts about health care and the future. PMID- 3853230 TI - Computers freeing nurses to focus on care. PMID- 3853231 TI - Nurses and collective bargaining: a holistic perspective. PMID- 3853233 TI - Voices of Mindanao women. PMID- 3853232 TI - Value system in nursing. PMID- 3853234 TI - Circumcision: pros and cons. AB - I have attempted to review the pertinent facts concerning circumcision and the proper care of the foreskin with the express purpose of trying to avoid the errors in technique or the mismanagement of the intact foreskin that occur all too frequently. Until parental and societal attitudes change, it is incumbent upon health care professionals to dispense proper care and provide accurate information regarding the prepuce. PMID- 3853235 TI - Evaluation and management of the acute scrotum. AB - The application of an orderly diagnostic protocol to the conditions causing the acute scrotum will allow all cases to be classified rapidly, with either a presumptive diagnosis of torsion or other surgical conditions that require surgery or exclusion of torsion with confidence. It is imperative, however, in those cases in which the acute scrotum is not operated on that sufficiently long follow-up be done to prove that in each and every case the testis and scrotal contents return to normal, so that an occult neoplasm will not be innocently neglected. PMID- 3853236 TI - Evaluation of gross and microscopic hematuria. AB - In summary, hematuria, either gross or microscopic and with or without any accompanying symptoms, should always alert the clinician to the possibility of serious urologic disease and should virtually always trigger a thorough urologic investigation. This can be done by immediate referral to the urologist, or it can be done by the primary care physician initiating the diagnostic work-up in children by obtaining studies for acute poststreptococcal glomerulonephritis and in adults by obtaining excretory urograms with physiologic voiding films and also by urine cytologic studies and urine cultures. Appropriate referral to a urologist can then be made for additional studies that might be indicated, such as cystoscopy and cystourethroscopy and for meticulous follow-up of any abnormal findings. The physician who delays or defers a careful investigation into the cause of a given patient's hematuria (gross or microscopic) does the patient a disservice at best and, at worst, may inadvertently permit a significant disease process to become more extensive. PMID- 3853237 TI - Office evaluation of female urinary incontinence. AB - The diagnosis and therapy of urinary incontinence in the female patient demand an orderly approach to this complex problem. In this article, the authors suggest a classification that can simplify the approach to the differential diagnosis; review the "catheterization test," a simple diagnostic modality; and briefly discuss some of the surgical and nonsurgical options for therapy. The primary emphasis is on the evaluation of the loss of urine per urethra. PMID- 3853238 TI - Vasectomy and its reversal. AB - Techniques, results, complications, and medicolegal aspects of vasectomy are discussed in this article. Emphasis is placed on techniques that prevent spontaneous recanalization of the ends of the vas deferens after vasectomy. Factors that affect the reversibility of vasectomy are discussed. New microsurgical techniques of vasectomy reversal are described, and results of these new techniques are compared with results of nonmicrosurgical techniques of vasectomy reversal. Indications for bypass vasoepididymostomy during vasectomy reversal procedures, as well as techniques for performing vasoepididymostomy, are discussed. PMID- 3853239 TI - Sexually transmitted disease in men. AB - As sexual mores have changed, the primary care physician is increasingly challenged by patient sexually transmitted diseases. In this article, the authors attempt to aid in the proper diagnosis and management of men with sexually transmitted disease. Clinical understanding, approaches, and tables to direct management are emphasized. PMID- 3853240 TI - Prostatitis. AB - Classification of patients with prostatic complaints into one of the categories of bacterial or nonbacterial prostatitis or prostatodynia (see Table 3) enables a physician to give rational advice to men with confusing symptoms. By examining the prostatic fluid of patients with prostatic symptoms, a physician may easily identify those men with prostatodynia who will never respond to antimicrobial or anti-inflammatory agents. Carefully obtained fractionated cultures of the urine will usually distinguish patients with bacterial and nonbacterial prostatitis, so that only those men who have bacterial prostatitis are treated with long courses of antimicrobial agents. Although recent measurements documenting elevated IgA and IgG in the EPS of men with nonbacterial prostatitis support theories of an antigenic cause for the prostatic inflammation and symptoms, the causes for this inflammation must still be identified. In addition, the etiology of prostatodynia is also unclear. As a result, the optimal treatment for most patients with nonbacterial prostatitis and prostatodynia remains unknown. PMID- 3853241 TI - Nurse disconnects respirator--code delay: abandonment. Case in point: Com. State Bd. of Nurse Examiners v. Rafferty (499 A. 2d 289--PA). PMID- 3853242 TI - Pt. abuse alleged--retaliatory termination: liability. Case in point: Welch v. Brown's nursing Home (484 N.E. 2d 178--OH). PMID- 3853243 TI - Attitudes toward social issues in health care: a cohort analysis. AB - Attitudinal change toward psychosocial issues in health care was tested through a cohort analysis of 190 nursing students at four successive undergraduate levels. The topics examined were: consistency and variability of attitudes toward social issues in health care and relationship between scale performance and age. Attitudinal change among nursing students at four successive undergraduate levels was tested in the present study using a modification of the Attitudes Towards Social Issues in Medicine (ATSIM) Inventory, an instrument composed of seven subscales dealing with various aspects of health care. Techniques used included analysis of variance and Levene's test of the equality of variances. The findings confirmed a process of professional socialization in nursing education with respect to the attitudes of nursing students toward health care issues. PMID- 3853244 TI - Stress, coping behaviors, and recommendations for intensive care and medical surgical ward registered nurses. AB - Forty one intensive care unit and 61 medical surgical ward registered nurses from two large urban teaching hospitals completed a stress questionnaire to examine stress factors, coping behaviors, and recommendations for alleviating stress within the work environment. Stress variables were grouped into five clusters: patient-related, environmental, management-related, interpersonal, and knowledge and skills. Multivariate analysis of variance demonstrated a significant main effect, with the ward nurses perceiving environmental factors as more stressful. Stress factors tend to be related to the overall hospital environment, especially in relation to specific work areas within the institutions. PMID- 3853245 TI - Reducing acute confusional states in elderly patients with hip fractures. AB - The extent to which the incidence of postoperative acute confusional states could be reduced in elderly (greater than or equal to age 60) patients with hip fractures was tested. Interpersonal and environmental nursing interventions were carried out with 57 patients on orthopedic units in three hospitals. The incidence of confusion was reduced from 51.5% in the comparison group (n = 170) to 43.9%. Analysis that controlled for risk factors in the two groups showed the drop in incidence to be significant (p less than .02). The most effective interventions appeared to be those that provided orientation and clarification, corrected sensory deficit, and increased continuity of care. PMID- 3853246 TI - College choice among prospective health professions majors: implications for nursing education. AB - Factors associated with high school students' decisions to pursue health-related fields of study were investigated using the "Survey of Future Plans of High School Seniors." Data from 10,878 seniors were analyzed using regression and discriminant analysis. Results indicated that: The applicant pool for health professions overlapped most with the applicant pool for education, but education majors were characterized by lower academic aptitude; the specific characteristics of a college were less important to those entering health professions than to those entering other majors; and, health profession applicants with higher academic aptitude purport life goals more consistent with professional advancement than do lower aptitude applicants. PMID- 3853247 TI - Experiencing hearing loss in later life: a comparison of deaf and hearing impaired older women. AB - The effects of hearing loss on the lives of two groups of older women are described: those provocationally deaf (n = 27) and those who experienced a later onset of hearing loss with aging (n = 39). The women, aged 54-96 years, were interviewed in their homes using their preferred mode of communication; open ended questions and the Hearing Handicap Inventory of the Elderly were used to assess social and emotional aspects of hearing loss and perceived handicap. Data were analyzed descriptively and the two groups compared on several variables. Both groups of women experienced a high degree of handicap, but expressed their problems differently. Later onset subjects emphasized emotional and situational problems while prevocationally deaf subjects expressed communication difficulty. PMID- 3853248 TI - Mental status and functional health 4 days following relocation to a nursing home. AB - Nurses frequently note changes in the health status of the aged following admission to a nursing home. The purpose of this study was to determine the stability of mental status and functional health over a 4-day period immediately following relocation from hospital to nursing home. Participants (N = 55) over the age of 60 were chosen sequentially as admitted to a 120-bed, long-term care facility for rehabilitation or convalescence, and interviewed on Day 1 and Day 4 following admission. Level of consciousness, attention/concentration, orientation, memory, and higher cognitive function were evaluated by the Mental Status Examination, and six activities of daily living were evaluated by the Scaled Outcome Criteria. A matched pairs t-test (p less than .05) demonstrated no significant differences in mean scores between Day 1 and Day 4. Results indicated that these short-term residents were stable in their mental status and functional health during the immediate period following relocation. Additional study is needed, with evaluation of the environment and its effect on participants' and expectation for length of stay. PMID- 3853249 TI - Environmental support for autonomy in the institutionalized elderly. AB - The climate for autonomy in four urban proprietary nursing homes was investigated as part of a larger study of the relationship between perceived control and morale. Data from 113 residents, 137 caregivers, and 10 administrative personnel revealed that caregivers see themselves as the predominant decision makers. Although they prefer a slightly higher level of self-determination for residents, only in one-to-one and solitary activities do they prefer giving residents the primary decision making role, possibly because they see most residents as not capable of making decisions. Residents saw themselves as having more control than did staff. Grooming and eating were identified by both groups as areas where residents had the least control. A substantial proportion of caregivers and administrative staff did not emphasize the availability of options to residents. PMID- 3853250 TI - Use of the health belief model in determining frequency of breast self examination. AB - The purpose of this research was to identify the relationships of attitudes about breast self-examination and breast cancer to the frequency of breast self examination. The health belief model was used as a theoretical base. Likert scales were developed for the independent variables of susceptibility, seriousness, benefit, barriers, and health motivation; the dependent variable was frequency of breast self-examination. A convenience sample of 301 women was drawn from a large metropolitan city. Self-administered questionnaires contained the developed scales, a measure of frequency of breast self-examination, and demographic variables. Results supported the health belief model's prediction of frequency of breast self-examination (R = .51; p less than or equal to .01). In addition, the variables of seriousness, benefits, barriers, and health motivation discriminated groupings according to frequency of breast self-examination. Results support the relationship of the health belief model variable to the behavior of breast self-examination Nursing implications are discussed. PMID- 3853251 TI - Mothers' health beliefs and use of well-baby services among a high-risk population. AB - The relationship between mothers' health beliefs and use of well-baby services among a poor, minority, high-risk population is reported. Data were collected from 61 black mothers attending a maternal-child clinic by interviews at the first and sixth months after the birth of their infants. The analysis focused on four health beliefs (susceptibility, severity, benefits, and efficacy) and two health behaviors (clinic visits and immunizations during the first 6 months). Although mothers' health beliefs were not predictive of clinic visits, health beliefs at the sixth month accounted for 30% of the variance in the number of immunizations. This relationship was dominated by perceived efficacy of immunizations and perceived benefits of well-baby services. The findings indicate a need to consider the nature and extent of possible changes in relationships between health beliefs and health behaviors over time. PMID- 3853252 TI - Differences in women's and men's thinking about parent-child interactions. AB - To determine if young women and men think differently about parenting when presented with the same information, a factorial between-subjects experiment was conducted. Two case studies (one successful, one unsuccessful) were evaluated; they varied only in terms of parent sex and child sex. Respondents explained parenting performance and rated both the parent and the child on the same personality items. The 136 women in the study were especially sensitive to the possibility of a child being troubled. Compared with the 136 men, they were less inclined to explain failure as the child's fault and to describe a child as mean. PMID- 3853253 TI - Determinants of turnover among nursing department employees. AB - A causal model of turnover, or quitting, among hospital nursing department employees was evaluated. This model includes job satisfaction, organizational commitment, and intent to leave as intervening variables that mediate 13 determinants of turnover. The sample consisted of 841 female nursing department employees selected from five hospitals in a western state. Attitudinal and background data were obtained through a mail questionnaire survey, and turnover was monitored for 18 months following the survey. Intent to leave had a strong direct effect on turnover while kinship responsibility, job satisfaction, and organizational commitment had indirect effects on turnover through intent to leave. Task repetitiveness, autonomy, promotional opportunities, and fairness of rewards were important determinants of jobs satisfaction and thus provide a mechanism whereby hospital management may enhance commitment to the organization while reducing turnover. PMID- 3853254 TI - Preventing coronary heart disease in high-risk families. AB - A preventive nursing intervention to reduce coronary heart disease (CHD) risk was tested. The sample was 19 families composed of 58 first-degreed relatives of young (age 30-55 years) victims of sudden cardiac death. Families were randomly assigned to control and experimental groups. The intervention at 3-5 months postdeath focused on assessment of health history, health behaviors, health beliefs, informing and educating about CHD risk factors, and methods for detecting and reducing these factors. The control group received mailed questionnaires and no intervention. The subject's reduction of CHD risk was measured at 7 months by changes in high risk CHD behaviors, changes in health beliefs, and adherence to screening for serum cholesterol and blood pressure determination. Analysis of covariance (covarying age and pretest scores) demonstrated no differences between groups for health beliefs; however, significant differences for health beliefs existed between the sibling subgroups. The intervention was correlated with a significant reduction in alcohol intake. Reductions in high fat meat consumption were in the desired direction. Greater percentages of subjects in the intervention group obtained blood pressure and cholesterol screening. PMID- 3853255 TI - [Plasma prekallikrein deficiency: 1st case diagnosed in Brazil]. PMID- 3853256 TI - [Concerning fatal errors]. PMID- 3853257 TI - [Stoma patients helping stoma patients]. PMID- 3853259 TI - [The art of nursing care--or nursing care is an art]. PMID- 3853258 TI - [The importance and practical realization of biliary intubation]. PMID- 3853260 TI - [The spasms of sobbing]. PMID- 3853261 TI - [Dialysis nurses in education]. PMID- 3853262 TI - [The harm of dental caries--the benefits of fluoride]. PMID- 3853263 TI - [Health systems called in question]. PMID- 3853264 TI - [Antibiotics]. PMID- 3853265 TI - [Ward study: night nurses and caretakers of digestive system disorders]. PMID- 3853266 TI - [Bacteriology. II]. PMID- 3853267 TI - [Harelip]. PMID- 3853268 TI - [Labiopalatine clefts--nursing care for a child undergoing surgery]. PMID- 3853269 TI - [Cancer of the uterus]. PMID- 3853270 TI - Evaluation of the clotting defect in a factor XII-deficient kindred. AB - A family with factor XII severe congenital deficiency is described. Factor XII activity and factor XII antigen were both undetectable in the propositus plasma; levels of FXII:C and FXII:Ag were intermediate in heterozygotes. Plasma prekallikrein activity was low in the propositus, whereas normal levels of antigen could be found, suggesting a defect of kallikrein activation due to factor XII deficiency. PMID- 3853271 TI - Radon emanation from concrete and the influence of using flyash in cement. AB - In the Netherlands both Portland cement and blast furnace cement (slags from blast furnaces with about 30% Portland cement) are used for concrete. Radon exhalation measurements were carried out on concrete blocks made with these two types of cement and blocks with 15, 25 and 35% of the cement substituted by three different types of flyash. The results show that substituting part of the cement by flyash has no drastic effect on the exhalation rate. For concrete with Portland cement the exhalation rate decreases using flyash with an average radium content. With blast furnace cement a slight increase may be expected. The exhalation of concrete is greater than the sum of the exhalation values of the constituting components. The water in the pores of the concrete plays an essential role in the emanation process. PMID- 3853272 TI - [ICN's representatives and congress 1985]. PMID- 3853273 TI - [Obesity--a health care problem]. PMID- 3853274 TI - [Mistreatment (neglect and abuse) of the elderly at home]. PMID- 3853275 TI - [Prediction of pressure sores--a task for nurses]. PMID- 3853276 TI - [Centralized patient admission in the orthopedic clinic]. PMID- 3853277 TI - [We in relation to developments]. PMID- 3853278 TI - [On the way toward a reevaluation of nurses' functions]. PMID- 3853279 TI - [Education seen in relation to social change and WHO's goal strategy as health care goals]. PMID- 3853280 TI - [Paracetamol]. PMID- 3853281 TI - [Phosphalugel]. PMID- 3853282 TI - [Hospital organization]. PMID- 3853283 TI - [Financial and administrative reform of public hospitals]. PMID- 3853284 TI - [Departmentalization in nursing education in Belgium]. PMID- 3853285 TI - [The hospital puzzle]. PMID- 3853286 TI - [Committee for Hygiene, Safety and Working Conditions]. PMID- 3853287 TI - [Recruitment conditions in public hospitals]. PMID- 3853288 TI - [Establishing a child under monitoring]. PMID- 3853289 TI - [Being a general nurse in a hospital center]. PMID- 3853290 TI - [Regulations for hospital practice]. PMID- 3853291 TI - [Hospital personnel--legislation and management]. PMID- 3853293 TI - [Observations on the nursing profession]. PMID- 3853292 TI - [The sick person--his illness and the others]. PMID- 3853294 TI - [Family allowances (1)]. PMID- 3853295 TI - [How to prevent sexually transmissible diseases]. PMID- 3853296 TI - [Hospital reform and nursing service]. PMID- 3853297 TI - [Lioresal]. PMID- 3853298 TI - [Health care services for drug addicts. Extra-hospital activities]. PMID- 3853299 TI - [The value of the associative life in extra-hospital psychiatric work]. PMID- 3853300 TI - ["Disinclose" the psychiatric hospital]. PMID- 3853301 TI - [Family placement of adult psychiatric patients]. PMID- 3853302 TI - [Role of the health care team in the opening project of a sheltered apartment. Chronic? Did you say chronic?]. PMID- 3853303 TI - [A part-time care structure for young children. Various characteristics of the framework and therapeutic methods]. PMID- 3853304 TI - [Functioning of a sheltered apartment and role of the nursing team]. PMID- 3853305 TI - [Home care services in the psychiatric sector. Reflections of a nursing group]. PMID- 3853306 TI - [Ambiguity of the relation of women to power]. PMID- 3853307 TI - [Systematic family therapy]. PMID- 3853308 TI - [Rehabilitation in post-traumatic phasic disorders in extra-hospital activities]. PMID- 3853309 TI - [A day hospital experience for children. "The threshold of the doorway"]. PMID- 3853310 TI - [Dressing of sternotomy with external electrodes following open-heart surgery]. PMID- 3853311 TI - [Diagnosis of deep venous thrombosis of the limbs]. PMID- 3853312 TI - [Diagnosis of pulmonary embolism]. PMID- 3853313 TI - [Treatment of venous thromboembolic disease]. PMID- 3853314 TI - [Thromboembolic disease. Case report]. PMID- 3853315 TI - [Physiopathology of thromboembolic disease]. PMID- 3853316 TI - [Relationship of the caretaker and amputation. Surveillance of the equipment]. PMID- 3853318 TI - [Health for all in the year 2000?]. PMID- 3853317 TI - [Clinical observation of an arteritis patient with surgery]. PMID- 3853319 TI - [Stimulating Lier course: back to the patient with new self-confidence]. PMID- 3853320 TI - [The fear of AIDS: illness as a metaphor]. PMID- 3853321 TI - [The new "illnesses": current health problems with a social cause]. PMID- 3853322 TI - [Temporary nurse assistants: no to abbreviated nursing education for nurse assistants?]. PMID- 3853323 TI - [1986 Federal Budget and nursing education]. PMID- 3853324 TI - [Routines in nursing homes--for the patients' sake or for personnel's?]. PMID- 3853325 TI - [Difficult decision: home or institution?]. PMID- 3853326 TI - [Alarm--cholera epidemic in Somalia]. PMID- 3853327 TI - [Fewer wages because you are a woman?]. PMID- 3853328 TI - [Government: actions in action!]. PMID- 3853329 TI - [ICN Congress: common standard and international consciousness]. PMID- 3853330 TI - [Women created in man's image]. PMID- 3853331 TI - [Social training groups--current proposal for alcoholics?]. PMID- 3853332 TI - [Child abuse and failure in care: health visitor services--help or control?]. PMID- 3853333 TI - [A bit of an adventure: then Reitgjerdet should change name]. PMID- 3853334 TI - [Norway is one underdeveloped country for patients' rights. Interview by Albert H. Collett]. PMID- 3853335 TI - [Important power in our health system--but: medical technology--neglected professional field?]. PMID- 3853336 TI - [An important political viewpoint]. PMID- 3853337 TI - [Human Rights Day 10 December--nursing care of torture victims]. PMID- 3853338 TI - [The environment at work must be healthy for all employees]. PMID- 3853340 TI - [A proper thought at the further development of hospice nursing]. PMID- 3853339 TI - [Psychiatry. Guidelines should not come with answers but should be objective]. PMID- 3853341 TI - [Research in preoperative patient information]. PMID- 3853342 TI - [Patients want better information about postoperative pain]. PMID- 3853343 TI - [Self care can mean health and understanding]. PMID- 3853344 TI - [Nursing home environment. Restraining our elderly in nursing homes]. PMID- 3853345 TI - [Danish participation important in international nursing congresses]. PMID- 3853346 TI - [Goat milk can be a useful alternative in pseudo-allergies]. PMID- 3853347 TI - [WHO. More women are wanted in health care activities]. PMID- 3853348 TI - [Self care. Tools for the critical nurse]. PMID- 3853349 TI - [Aphasia. A large part of one's personality lies in one's ability to express oneself. Interview by Ulla Danielsen]. PMID- 3853350 TI - [WHO. The role of private organizations in the strategy Health for All]. PMID- 3853351 TI - [Partial pension negotiated in the Fall]. PMID- 3853352 TI - [Assistance to children with minor motor deficiencies]. PMID- 3853353 TI - [Nursing care. Solution of 3 distinct clinical nursing problems]. PMID- 3853354 TI - [Nursing care. Improvement of hand hygiene appears to be necessary]. PMID- 3853355 TI - [Drug information. New method to anesthetize men who need to have a catheter inserted]. PMID- 3853356 TI - [Closer team work and new methods better than unit nurses]. PMID- 3853357 TI - [Unit nursing--treatment before prevention]. PMID- 3853358 TI - [Many indications of a growing shortage of nurses]. PMID- 3853359 TI - [Nursing care. It is our task to allay fear in intensive care patients]. PMID- 3853360 TI - [Health. To step forward--to go along--to be alive]. PMID- 3853361 TI - [Nursing care. AIDS: real solution to keep AIDS away from sensationalism. Interview by Lene S. Garden]. PMID- 3853363 TI - [Problem can only be solved by educating more]. PMID- 3853362 TI - [Mr. Hansen cannot bear to get in the bathtub]. PMID- 3853364 TI - [Psychiatry. Evident need for ambulatory group therapy]. PMID- 3853365 TI - [Health is not only absence of disease--it is physical, mental and social welfare. Interview by Helle K. Hansen]. PMID- 3853366 TI - [Health. It is good to know that one is useful for something. Interview by Helle K. Hansen]. PMID- 3853367 TI - [Executive Board. Nurses will influence local developments]. PMID- 3853368 TI - [Entirely new hygienic guidelines for care of AIDS patients]. PMID- 3853369 TI - [Continuing education. Nursing college invites applications]. PMID- 3853370 TI - [Admission to nursing college]. PMID- 3853371 TI - [Tax orientation. 2 decisions from the Federal Tax Legislation concerning deductions]. PMID- 3853372 TI - [Nurses prepare for key positions]. PMID- 3853373 TI - [Denmark helps Bangladesh with basic medicines]. PMID- 3853374 TI - [Drug information. Analgesic drugs which can be brought without prescription]. PMID- 3853375 TI - [Research must be organized and financed]. PMID- 3853376 TI - [Iraq. The female relatives arranged the laundry brought along to the hospital]. PMID- 3853377 TI - [Education. Agreement on extra education places still not fulfilled]. PMID- 3853378 TI - [Education. Frustrated? I am only a student nurse]. PMID- 3853379 TI - [Nordvang. County mayor makes moral issue a legal problem. Interview by Peter Hjorth]. PMID- 3853380 TI - August 2, 1985--Delta Flight 191: worst air disaster in Texas history. Red cross nurses respond. PMID- 3853381 TI - Why nurses should have a tax strategy. PMID- 3853382 TI - [Care against all opposition. Observations on 3 care models]. PMID- 3853383 TI - [The FONA-Commission. Quality assurance with reference to Errors Accidents and Near-accidents]. PMID- 3853384 TI - [Nurses in academic hospitals are evaluated. Introduction of functional appraisal for nurses]. PMID- 3853385 TI - [The Leeuwerikhoeve: a therapeutic living and working community in development]. PMID- 3853386 TI - [A kidney full of worms. How school children understand their illness]. PMID- 3853387 TI - [Basic health care and nursing. I: What is basic health care?]. PMID- 3853388 TI - [Can district nursing stimulate self care and comprehensive care?]. PMID- 3853389 TI - Reconstructing a self-image: reduction mammoplasty. PMID- 3853390 TI - Performing knee arthroscopy under local anesthesia. PMID- 3853391 TI - Computers to the OR--stat! Part 3. PMID- 3853392 TI - Help your patients stand tall! Scoliosis correction with spinal fixation. PMID- 3853393 TI - [Therapeutic aspects of salmonellosis in veal calves]. AB - The present investigation was undertaken to improve dosage regimens--using amoxycillin, chloramphenicol or trimethoprim/sulphadiazin--in Salmonella dublin or Salmonella typhimurium infected vealcalves. The pharmacokinetic of these drugs was studied after i/v, oral, and i/m administration (bio-availability, local irritation at the injection site, volume of distribution, and elimination half life). The most important conclusion was that amoxycillin, chloramphenicol, and trimethoprim were suitable for oral administration to vealcalves, although the bioavailability of chloramphenicol and trimethoprim was significantly less when administered with a milk replacer concurrently. In vitro the antibacterial activities of these drugs were compared with each other. Addition of sulphadiazin to trimethoprim lowered its MIC for S. dublin, but it reduced the killing rate compared to that of trimethoprim alone. In the efficacy studies the activities of several serum enzymes and the plasma concentrations of Fe, Zn, Cu, and bilirubine were measured. Using optimal dose regimens based on MIC values and blood levels treatment with either of the three drugs was of equal efficacy. PMID- 3853394 TI - A multidimensional, dual-perspective index of parenteral support. PMID- 3853395 TI - Adjustment patterns of chronically ill middle-aged persons and spouses. PMID- 3853396 TI - Influencing the future of nursing research through power and politics. PMID- 3853398 TI - Ethical issues in nursing research. PMID- 3853397 TI - A discriminant model to predict breast-feeding success. PMID- 3853399 TI - Strategies for teaching nursing research. Theory and metatheory in an undergraduate research course. PMID- 3853400 TI - Computer use and nursing research. ANA Council on Computer Applications in Nursing. PMID- 3853401 TI - Nursing research productivity: the University of Washington experience. PMID- 3853402 TI - Research utilization--nursing models. PMID- 3853403 TI - [Mucosa dimensions and cell proliferation in intestinal organ cultures with and without inhibition of cholesterol synthesis]. AB - The changes in the structure and proliferative activity of rabbit ileal mucosa have been studied with morphometric and stathmokinetic techniques during 24 h organ culture. Under control conditions the villus base diameter and villus height decreased by 34 and 53%, respectively, whereas the number of villi per mm2 remained constant. The reduction of crypt depth was less pronounced than the loss in villus height, leading to a decrease in the villus height to crypt depth ratio from 3.4 to 2.3. The likely reason for this culture induced hypoplasia was a significant drop in mitotic activity as early as 2 h after starting the culture. Inhibition of HMG-CoA reductase, the key enzyme of cholesterogenesis, lead to a further reduction in mucosal dimensions and a near complete suppression of crypt cell regeneration. These data imply that despite the well-known preservation of differentiated function mucosal cell renewal during organ culture is impaired. PMID- 3853404 TI - [Who is responsible for the working environment?]. PMID- 3853405 TI - [After the women's decade: women as a group are politically stronger. Interview by Arne Jartelius]. PMID- 3853406 TI - [Study on delegating: nurses lack proficiency]. PMID- 3853407 TI - [Eva answers telephone questions on cancer. Interview by Inger Lernevall]. PMID- 3853408 TI - [Swedish nursing instructor in Nicaragua: here studies and coffee picking take turns. Interview by Caroline Svensson]. PMID- 3853409 TI - [We don't want to do the clean-up. Interview by Inger Lernevall]. PMID- 3853410 TI - [Karlskrona: here they are on the right track]. PMID- 3853412 TI - [District nurse without car to boot. County Council outside and bicycling?]. PMID- 3853411 TI - [Team work for better care: SHSTF and Municipal Employee Union]. PMID- 3853413 TI - [Medical clinic in Vasteras. Work Inspection stops overcrowding with threat of fines]. PMID- 3853414 TI - [An American looks at Swedish health care. Are Swedish nurses aware of their poor conditions?]. PMID- 3853415 TI - [SHSTF no to brain death]. PMID- 3853416 TI - [Dialysis lawsuit in Gota's Court of Appeals. Alarm panels resemble Russian roulette. Interview by Viveka Holmertz]. PMID- 3853417 TI - [Fellows quicker ahead. Interview by Anita Widen]. PMID- 3853418 TI - [Lena Svenaeus on dialysis verdict: "completely unjust". Interview by Viveka Holmertz]. PMID- 3853419 TI - [Health care in refugee camp under siege: impossible to give the care they need]. PMID- 3853420 TI - [That's why SHSTF needs to get signed contract: nurses are guarantee for medical quality]. PMID- 3853421 TI - [Margitta Edgren, new nurse in parliament. Interview by Viveka Holmertz]. PMID- 3853422 TI - [Successful demonstration]. PMID- 3853423 TI - [SHSTF's representatives: severe criticism with Social Welfare Board]. PMID- 3853424 TI - [Dosage is too big--nurse doesn't know arithmetic. Interview by Viveka Holmertz]. PMID- 3853425 TI - [Here you find 300 meter of pictures which stir the imagination. Interview by Kjell Torma]. PMID- 3853426 TI - [Agreement 86. "We must obtain a better wage system". Interview by Jan Thomasson]. PMID- 3853427 TI - [Agreement 86. "Politicians must take responsibility for their employees". Interview by Jan Thomasson]. PMID- 3853428 TI - [Dispute about sex discrimination solved]. PMID- 3853429 TI - [International cooperation--a conflict without solution?]. PMID- 3853430 TI - [St. Erik's Hospital is closing]. PMID- 3853431 TI - [Directors must have nursing knowledge. Interview by Jan Thomasson]. PMID- 3853432 TI - [District nurses ready to take responsibility for nursing home at night. Interview by Jan Thomasson]. PMID- 3853433 TI - [25 kr. per visit--sabotage of care. Interview by Viveka Holmertz]. PMID- 3853434 TI - [Vansbro, Dalarna: chaotic year for nurses. Interview by Janne Berglund]. PMID- 3853435 TI - Developing a professional ethic. PMID- 3853436 TI - The role of a sexuality division in a public health agency. PMID- 3853437 TI - Development of a quality assurance program: Colonel Belcher Hospital. PMID- 3853438 TI - Computer knowledge. PMID- 3853439 TI - Baccalaureate entry to practice: educational cost implications. PMID- 3853440 TI - Position paper: quality of working life. PMID- 3853441 TI - Humour: more than Ho! Ho! Ho! PMID- 3853442 TI - Reality orientation-Dickinsfield. PMID- 3853443 TI - Nature of interaction in elderly mother and elderly daughter dyads. PMID- 3853444 TI - Quality of working life position paper. PMID- 3853445 TI - Comments on nursing in the 80's: a dynamic model. PMID- 3853446 TI - The control of granule movement in fish melanophores. AB - The effects of electrical field stimulation, alpha-2-adrenoceptor activation and manipulation of the intracellular machinery on aggregation and dispersion of melanosomes within melanophores of Labrus ossifagus were studied. Neither melatonin nor MSH exerted any direct effects on the melanophores, and furthermore MSH alone did not affect the responses elicited by electrical stimulation or by noradrenaline. Omitting extracellular Ca2+ blocked the nerve-mediated aggregation but was without effect on noradrenaline-induced aggregation. Colchicine and demecolcine inhibited the melanosome aggregation induced by noradrenaline. The characteristics of aggregation and dispersion were found to diverge in several ways. In melanophores made permeable by dispersion were found to diverge in several ways. In melanophores made permeable by using saponin, cyclic AMP caused dispersion. The dynein-ATP-ase inhibitor vanadate prevented the melanosome aggregation within saponin-treated melanophores, while vandate was without effect on the cyclic AMP-induced dispersion. The melanosome transport in saponin-treated melanophores could be activated even in the absence of Ca2+, indicating that the melanosome movements were completely Ca2+-independent. PMID- 3853447 TI - Analysis of cellular senescence through detection and assessment of RNAs and proteins important to gene expression: transfer RNAs and autoimmune antigens. PMID- 3853448 TI - Remembering: a brief tale of a long life in public health. PMID- 3853449 TI - Solid-phase radioimmunoassay for human neutrophil elastase: a sensitive method for determining secreted and cell-associated enzyme. AB - A solid-phase radioimmunoassay for measuring neutrophil elastase in the range 0.08-4 ng/ml has been developed. A monospecific, precipitating antibody capable of inhibiting elastinolysis was produced by repeated immunizations of a goat. The IgG fraction and affinity-purified antibodies of this serum were then obtained and used to develop this radioimmunoassay. There was no cross-reactivity in binding of the radiolabeled antisera with lactoferrin, cathepsin G, or serine proteinases with amino-terminal amino acid sequence homology. Although serum influences the measurement of catalytically active neutrophil elastase when compared to diisopropylfluorophosphate-treated neutrophil elastase, antigenic elastase may still be measured in body fluids. Furthermore, this assay is more sensitive than commercially available substrates used for quantitating neutrophil elastase by functional activity. We have found this quantitative assay extremely useful in balance studies to measure secreted and cell-associated elastase and in screening of biological fluids for the presence of the enzyme. PMID- 3853450 TI - Survey of purchasers of The APIC Curriculum for Infection Control Practice: findings and recommendations. AB - A survey of purchasers of The APIC Curriculum for Infection Control Practice was conducted in early 1985 by the APIC Curriculum Committee to determine characteristics of purchasers, usability of the text, reasons for purchase, and availability of references cited. Data were obtained from 342 (54.3%) respondents to a nationwide mail survey sent to a 20% sample (630) of all who were purchasers prior to January 1985. The average purchaser was an Infection Control Practitioner (ICP) who was a nurse employed by an acute care community hospital and had 6.9 years experience in infection control practice; 41% of purchasers worked in hospitals with greater than 300 beds. APIC members represented 93% of the respondents, and their disciplines were similar to those of the membership. Primary reasons for purchasing the Curriculum were to use it as the major reference for infection control information and to study for the Infection Control Certification Examination. Almost half of the respondents had taken and passed the examination. The overall satisfaction with format and style suggests that it was well-received and usable. Purchase of the Curriculum was strongly associated with hospital size. ICPs practicing in hospitals with less than 100 beds were less likely to have purchased the book than those in larger hospitals. Availability of references was also associated with hospital size. Future editions of the Curriculum need to reflect consideration of the relationship between hospital size and availability of references in their approach to completeness of information.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3853451 TI - Moral, ethical, and legal aspects of infection control. PMID- 3853452 TI - Infection control staffing recommendations appear to need reexamination. PMID- 3853453 TI - Comparison of neutrophil elastases and of neutrophil protease inhibitors in the horse and man. AB - Neutral neutrophil protease, elastase activities, and cytosol protease inhibitors of these enzymes of horses and man were compared. Human neutrophils had 5 times the elastase activity of equine neutrophils, and neutral protease activity was approximately 50% greater in human neutrophils than that in equine neutrophils. Cytosol inhibitors for elastase and neutral proteases were not found in human neutrophils, whereas large amounts were found in equine neutrophils. Using fibrinogen-agarose electrophoresis, 4 cytosol inhibitors of different enzyme specificities were detected. These cytosol inhibitors were differentiated on the basis of different electrophoretic migration and on the basis of differences in enzyme specificity. PMID- 3853454 TI - Recommended practices. Radiation safety in the operating room (including lasers). AORN Recommended Practices Subcommittee. PMID- 3853455 TI - Treatment of pelvic endometriosis with gestrinone--report on 9 cases. PMID- 3853456 TI - Diabetes education and management. PMID- 3853457 TI - College-based education: background and bugs. 1. Why it has happened. PMID- 3853458 TI - College-based education: background and bugs. 2. Optimizing the transition. PMID- 3853459 TI - Nurse & the law. What was said--and what she thought was said. PMID- 3853460 TI - Drug interactions. PMID- 3853461 TI - Decanoyl lysophosphatidic acid induces platelet aggregation through an extracellular action. Evidence against a second messenger role for lysophosphatidic acid. AB - Platelets rapidly convert 1,2-didecanoyl-sn-glycerol into its corresponding phosphatidic acid and lysophosphatidic acid derivatives, thereby providing a means of introducing these two compounds into platelets. 1-Decanoyl-2-lyso-3-sn phosphatidic acid, when added directly to platelets, induced platelet aggregation and raised intracellular Ca2+ levels at concentrations of 0.3 microM upwards, but was without effect when formed intracellularly from 1,2-didecanoylglycerol at an estimated concentration of approx. 47 microM. This indicates that the site of platelet activation by lysophosphatidic acid is extracellular. A concentration of thrombin (0.2 unit/ml), which produced maximal platelet aggregation, caused an estimated intracellular formation of 20 microM-lysophosphatidic acid in the presence of 2 mM-Ca2+; however, there was no detectable release of lysophosphatidic acid into the bathing medium. Lysophosphatidic acid, therefore, may not be an intracellular second messenger involved in platelet aggregation by thrombin. PMID- 3853462 TI - Biosynthesis of complement components by cultured rat hepatocytes. AB - Hepatocytes which had been isolated from the livers of Charles River rats were cultured in vitro. The cells were shown to synthesize albumin and the complement components C4, C2, C3 and B. Pulse-label studies with [35S]methionine showed that C4 and C3 were synthesized as single polypeptide chains. Pro-C4 did not appear to be converted into the plasma form of C4 intracellularly, whereas cell lysates contained the alpha- and beta-chains of plasma C3 as well as pro-C3. It is concluded that culture of rat hepatocytes in vitro provides a useful technique for studies of the synthesis of complement components. PMID- 3853464 TI - Two tRNAIle1 species from an extreme thermophile, Thermus thermophilus HB8: effect of 2-thiolation of ribothymidine on the thermostability of tRNA. AB - From Thermus thermophilus HB8 grown at 65 degrees C, two major tRNAIle species have been purified by column chromatography and polyacrylamide gel electrophoresis. The nucleotide sequence of one of these two tRNAIle1 species (tRNAIle1a) has been determined to be pGGGCGAUUAGCUCAGCUGmGUDAGAGCGCACGCCUGAUt6AAGCGUGAGm7GUCGGUGGs2T psi CAm1AGUCCACCAUCGCCCACCAOH. The nucleotide sequence of the other species (tRNAIle1b) is found to be the same as that of tRNAIle1a except for the modification in position 54; tRNAIle1a has s2T(54) while tRNAIle1b has T(54). The melting temperature of tRNAIle1a is as high as 86.2 degrees C while that of tRNAIle1b is 83.3 degrees C. The single replacement of an oxygen atom (2-carbonyl oxygen) of T(54) by a sulfur atom significantly contributes to the thermostability of the tRNAIle1a species. In addition, the methylation of G(18) and A(58) possibly contributes to the thermostability of T. thermophilus tRNAIle1a and tRNAIle1b species. PMID- 3853463 TI - Interaction of normolipidemic very low density lipoproteins with receptors in human skin fibroblasts. AB - Very low density lipoproteins (VLDL) from normolipidemic subjects were able to bind to the cultured human skin fibroblasts almost as efficiently as low density lipoproteins (LDL). The rate of esterification of cholesterol in the fibroblasts was enhanced by VLDL to the same extent as by LDL. Trypsin treatment of VLDL abolished the binding capacity completely. When trypsin-treated VLDL was partially delipidated with heptane, part of the binding capacity to the fibroblasts was restored. SDS polyacrylamide gel electrophoresis showed that apolipoprotein E (apo E) in VLDL was digested completely by trypsin. Although normal VLDL are recognized by the cells through apolipoprotein E, the major apoprotein of VLDL, that is apolipoprotein B (apo B), is not functional unless the core triglycerides are removed. In contrast to the previous reports which indicate that only hypertriglyceridemic VLDL and not normal VLDL interact with fibroblast receptors, our results clearly show that VLDL from normolipidemic subjects can also bind to these receptors. PMID- 3853465 TI - Thermodynamics of anion binding to human serum transferrin. AB - The binding of phosphate, bicarbonate, sulfate, and vanadate to human serum transferrin has been evaluated by two difference ultraviolet spectroscopic techniques. Direct titration of apotransferrin with bicarbonate, phosphate, and sulfate produces a strong negative absorbance near 245 nm, while titration with vanadate produces a positive absorbance in this region. Least-squares refinement of the absorbance data indicates that two anions of sulfate, phosphate, and vanadate bind to each transferrin molecule but that there is detectable binding of only a single bicarbonate anion. A second method used to study the thermodynamics of anion binding was competition equilibrium between anions for binding to the transferrin. The equilibrium constant for binding of the first equivalent of vanadate was determined by competition vs. phosphate and sulfate, while the equilibrium constant for binding of the second equivalent of bicarbonate was determined by competition vs. vanadate. Anion binding was described by two equilibrium constants for the successive binding of two anions per transferrin molecule: K1 = [A-Tr]/[A][Tr] and K2 = [A-Tr-A]/[A][A-Tr] where [A] represents the free anion concentration, [Tr] represents apotransferrin concentration, and [A-Tr] and [A-Tr-A] represent the concentrations of 1:1 and 2:1 anion-transferrin complexes, respectively. The results were the following: for phosphate, log K1 = 4.19 +/- 0.03 and log K2 = 3.25 +/- 0.21; for sulfate, log K1 = 3.62 +/- 0.07 and log K2 = 2.79 +/- 0.20; for vanadate, log K1 = 7.45 +/ 0.10 and log K2 = 6.6 +/- 0.30; for bicarbonate, log K1 = 2.66 +/- 0.07 and log K2 = 1.8 +/- 0.3.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3853466 TI - [Transplantation of the vascularized thyroid and parathyroid and nursing care]. PMID- 3853467 TI - [Nursing of patients after an operation for primary hyperparathyroidism]. PMID- 3853468 TI - [Cross-bridge free compound tissue transplantation and patient care]. PMID- 3853469 TI - [Treatment and nursing of a ruptured spleen]. PMID- 3853470 TI - [Use of an air tourniquet in operations on the extremities]. PMID- 3853471 TI - [Anticoagulation therapy of late SLE nephritis patients]. PMID- 3853472 TI - [Nursing care of patients with obesity]. PMID- 3853473 TI - [Nursing care of patients after vagina reconstruction using 3 new methods]. PMID- 3853474 TI - [No family care system in the pediatric ward]. PMID- 3853475 TI - [Gentamycin: interactions with some other drugs]. PMID- 3853476 TI - Symposium on sleep disorders. PMID- 3853477 TI - Control of ventilation during sleep. AB - Ventilatory responses to chemostimulation are reduced during NREM sleep and fall further during REM sleep. These reductions are probably due to a combination of decreased basal metabolic rate during sleep, altered neuromuscular function, and increased cerebral blood flow. The decreased responses are important in the production of hypoxemia during sleep in patients with hypoxic lung disease. PMID- 3853478 TI - Sleep and control of heart rate. AB - The heart rate in normal humans is determined by many factors. Assuming a normal hemoglobin concentration, left ventricular function, and metabolic rate, respiration, and its effects, along with autonomic nervous activity, appear to influence heart rate the most. Hypoxia and hypercapnia both increase heart rate during wakefulness and probably do the same during sleep. The hypoxic response is dependent on information from lung inflation and the carotid bodies. Respiratory rate, within limits, will determine the amplitude of the well-known (respiratory) sinus arrhythmia. During sleep, a distinct pattern of heart rate response and its respiratory arrhythmia are seen for each stage of sleep and are related to the level of autonomic nervous system activity during wakefulness. Blood pressure follows the same trend as heart rate during sleep, and changes in cardiac output and total peripheral vascular resistance are variable during sleep, but there is no consensus of opinion about the direction of these changes. Rhythm disturbances are predominantly those of bradyarrhythmias, exaggerated sinus arrhythmias, and transient AV block, which are probably occurring in REM sleep. PMID- 3853479 TI - Sleep in restrictive lung disorders. AB - Abnormalities in sleep occur in patients with both extrapulmonary restriction and intrapulmonary restriction. Patients with extrapulmonary restriction such as kyphoscoliosis may develop severe apneas during sleep, particularly during the REM stage. Patients with interstitial lung disease continue to have a rapid shallow breathing pattern during sleep, but may also develop abnormalities in the breathing pattern. During periods of snoring patients with interstitial lung disease may develop further hypoxemia. PMID- 3853480 TI - Sleep and respiration: a postscript. AB - The recent advances in our understanding of breathing in sleep include an evolution in the selection and surgical therapy of patients with the sleep apnea syndrome. Recent work suggests that shorter polysomnographic studies may be adequate for diagnostic purposes in many sleep apnea patients. It is now clear that central apnea may occur, paradoxically, in patients with either very blunted chemical drives to breathe or increased drives to breathe. PMID- 3853481 TI - Real-time blood pressure monitoring in physiological experiments using an Apple II microcomputer. AB - The paper describes a program used for real-time blood pressure monitoring. A simple method allowing interactive control of the decision criteria is used for upstroke detection. The blood pressure signal is characterized by means of 8 parameters, computed for every cycle. The program offers two graphic modes: plotting (a) the original signal and (b) the computed variables. Other useful programs are presented together with the BP/MONITOR to allow use of the Apple II as a digital memory scope in different working modes. PMID- 3853482 TI - A computer algorithm for the assessment of age reporting bias in censal population estimates using Myers' 'blended' method. AB - A population's age structure is widely used in the computation of many vital statistics. The importance of highly accurate vital statistics cannot be overemphasized--such statistics are used extensively by governments to determine the proper allocation of health resources and services, and by demographers, sociologists and epidemiologists to study secular trends. A computer program has been developed for use on an Apple II+ microcomputer for the analysis of population age profiles and determination of age reporting bias. PMID- 3853483 TI - Multifit: a flexible non-linear least squares regression program in BASIC. AB - MULTIFIT, a program in BASIC for implementation on microcomputers, has been developed for non-linear least squares regression fitting of enzyme kinetic, pharmacokinetic and other data to specific models. The program contains a simple procedure for insertion of model equations with up to five parameters (to be fitted) up to 3 independent variables and 1 dependent variable, and can be used to generate a family of programs with pre-set model functions. PMID- 3853484 TI - Estimating variance components with BMDP for analyses of technical reliability. AB - Measurement reliability reflects the ratio of true (subject) to observed (subject plus error) variance. Analyses of reliability are limited due to difficulties in obtaining accurate estimates of the sources of variation upon which this relationship depends. This paper presents a simple analysis of variance procedure, using BMDP8V, for estimating the necessary variance components of mixed models, from which reliability may be assessed. PMID- 3853485 TI - A FORTRAN program for ranking and for calculation of Spearman's correlation coefficient. AB - A FORTRAN IV program is presented for ranking data in ascending order. The ranks corrected for ties are printed together with the corresponding raw data, if requested. After ranking, the Spearman's rank correlation coefficient, rs, as well as the corresponding t-value, can be calculated. In these calculations corrections are made for tied values. PMID- 3853486 TI - Precise calculation of the cumulative distribution function and its inverse function for Fisher's F and Student's t tests. AB - A computer program to calculate precise solutions (exact to the limit of computer accuracy) for the cumulative distribution function of the statistical t and F distributions is detailed. A routine that makes iterative calls of this algorithm to calculate precisely the inverse function of these distributions by successive approximation is also provided. The program provided yields precise levels of probability confidence for both Fisher's F and Student's t tests, and the inverse calculation of critical values given p. It is written in a subset of BASIC which should run on any small computer, requiring only 1538 bytes on the Commodore 64. PMID- 3853487 TI - Automated classification of phonological errors in aphasic language. AB - Using heuristically guided state space search, a prototype program has been developed to simulate and classify phonemic errors occurring in the speech of neurologically impaired patients. Simulations are based on an interchangeable rule/operator set of elementary errors which represent a theory of phonemic processing faults. This work is significant because it introduces and evaluates a novel approach to error simulation and classification, provides a prototype simulation tool for neurolinguistic research, and forms the initial phase of a larger research effort involving computer modelling of neurolinguistic processes. PMID- 3853488 TI - Computer assessment of hemodynamic severity of coronary artery stenosis from angiograms. AB - A computer-assisted analysis of coronary obstructions from cineangiograms is presented, which includes both the geometric and hemodynamic evaluation of coronary stenosis severity. Single frame images are digitized into a 512 X 512 X 8 bit array after a cine-to-video conversion. Automatic edge tracking is performed using a combination of derivative and threshold methods. Vessel borders from two orthogonal views of the arterial segment are used to create a three dimensional reconstruction of the stenosis, which serves as a basis for calculation of absolute and relative geometric dimensions, stenotic resistance and trans-stenotic pressure gradient for various given flow rates. A preliminary performance evaluation of this method was made by analysis of x-ray phantoms representing stenoses of known dimensions, which were filmed under quasi-clinical conditions. The results are discussed with respect to their accuracy and reproducibility. PMID- 3853489 TI - Detection of saccadic eye movements using a non-recursive adaptive digital filter. AB - Saccadic eye movements provide important information about the neuron system at several levels. In recent years computer analysis of saccades has been adapted for use in clinical work. The most common detection methods do not always function without the user's control and aid. In the present paper a digital filter is described for the detection of saccades. This non-recursive filter unscrambles saccade data which has been collected during the execution of an algorithm. The method is suitable for use with microcomputers. The filter is adaptive. Two concise experiments using the method are described. PMID- 3853490 TI - A simulation model for studies of intestine cell dynamics. AB - A dynamic simulation model for the epithelial cell structures of the intestine has been developed. The model is based on hypotheses found in the literature. It is shown that basic cell dynamics can be reproduced by simulation experiments. The simulation program is designed so that model output comparable with experimental findings can be obtained. The use of a dynamic simulation model can be interpreted as a simulated experiment in vivo. The model therefore allows analysis of dynamic behaviour that cannot be performed by normal experimental work. This means that the model can be used as a tool for verification/falsification of hypotheses about dynamics in both normal and abnormal cell structures. PMID- 3853491 TI - [Psychocybernetics and nursing--in search of more meaningful encounters with patients. (4)]. PMID- 3853492 TI - [Guidance of students in case studies. (2)]. PMID- 3853493 TI - [Definition of psychiatry--establishment of scientific psychiatry. (3)]. PMID- 3853494 TI - [Ambulation of blind people and the role of seeing-eye dogs--assistance for independence in walking]. PMID- 3853495 TI - [Scientific study of nursing: case study series. 6. Part I. Interactions with students during clinical training in pediatrics]. PMID- 3853496 TI - [Scientific study of nursing: case study series. 6. Part II. Interactions with students during clinical training in pediatrics. Comment on the process of instruction]. PMID- 3853497 TI - [Scientific study of nursing: case study series. 6. Part III. Discussion on the "interactions with students during clinical training in pediatrics"]. PMID- 3853498 TI - President's address to the 1985 Connecticut Nurses' Association House of Delegates. PMID- 3853499 TI - A person story: modern job hunting for nurses. PMID- 3853500 TI - Sequelae to ruptured aortic aneurysm. PMID- 3853501 TI - Nursing care of the potential organ donor. PMID- 3853502 TI - To sleep or not to sleep: the consequences of sleep deprivation. PMID- 3853503 TI - Discharge planning for critical care. PMID- 3853504 TI - Sleep and the elderly critical care patient. PMID- 3853505 TI - Nursing care of patients with blunt cardiac trauma. PMID- 3853506 TI - Ceftriaxone sodium (Rocephin, Roche). PMID- 3853507 TI - Cardiovascular physiology in the elderly. PMID- 3853508 TI - Arrhythmia quiz. PMID- 3853509 TI - Harrington rod instrument and spinal fusion: postoperative care plan. PMID- 3853510 TI - Negligence: the determination of legal liability. PMID- 3853511 TI - Exercise testing in suspected coronary artery disease. AB - The interpretation and selection of exercise tests depends on the pretest probability of CAD. Imperfect tests (like exercise tests) provide probability estimates, not definite statements (such as "the patient has CAD" or "the patient does not have CAD"). In patients with a low pretest probability of CAD (asymptomatic persons or men and women with nonanginal chest pain), abnormal exercise test results provide probability estimates that are much too low to conclude that the patient has CAD. In patients with anginal pain and normal exercise tests, the probability of CAD is too high to conclude that the patient has a normal coronary circulation. Exercise tests are not useful for trying to rule out CAD in patients with anginal pain. In patients with an intermediate pretest probability of CAD (men and women with atypical angina and women with typical angina), abnormal exercise tests (particularly the myocardial scintiscan) provide probability estimates that are high enough to justify starting treatment for CAD. Exercise tests are most useful in this group, a conclusion that has been reached by other methods of analysis. The myocardial scintiscan is much more useful than the exercise ECG in women. When CAD is strongly suspected, exercise tests have relatively little diagnostic value but may be useful for prognosis. However, clinical evidence of poor ventricular function may alone suffice to select patients with angina pectoris for coronary arteriography. Conversely, when clinical indicators of congestive heart failure are absent, the prognosis in chronic stable angina is so favorable that any further testing may be unnecessary. Screening asymptomatic persons for CAD is a very low yield practice. Patients who have no cardiac risk factors (hypercholesterolemia, family history of CAD, cigarette smoking, and hypertension) are at especially low risk of a primary cardiac event. Older men with stable typical angina are particularly likely to have left main coronary artery stenosis or three-vessel disease with poor ventricular function. The exercise ECG can identify groups of older men with a relatively high risk of having left main coronary artery stenosis. Physicians should be cautious when applying these recommendations to a primary care practice. The foregoing analysis is based on data obtained from patients who had been selected for coronary arteriography. There are two principal effects of biased selection of study patients: The pretest probability of CAD in clinical subgroups is probably lower than as shown here.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3853513 TI - [Pathogenesis and clinical aspects of acute appendicitis]. PMID- 3853512 TI - Ethyl esters of N-(3- and N-(4-amidinobenzoyl)(-L-)amino acids: synthesis and antiproteolytic activity towards bovine trypsin and porcine pancreatic kallikrein. AB - Ethyl esters of N-(3- and N-(4-amidinobenzoyl)(-L-)amino acids (namely, glycine, alanine, valine, leucine and phenylalanine) were synthesized and their inhibitory effect on the bovine trypsin and porcine pancreatic kallikrein catalyzed hydrolysis of p-nitroanilides of amino acids was investigated, at pH 8.1 and 37 degrees, in parallel with the effect of ethyl and/or methyl esters of N-benzoyl( L-)amino acids and benzamidine. For both proteinases, the inhibitory effect of ethyl esters of N-(3- and N-(4-amidinobenzoyl)(-L-)amino acids is independent of the aminoacidic side chain, is closely similar to that of benzamidine (which binds at the S1 subsite of the proteinases examined and is commonly taken as a molecular inhibitor-model), and is higher by at least 10-fold than that of ethyl and/or methyl esters of N-benzoyl(-L-)amino acids (depending on the aminoacidic residue). On structural grounds, the peculiar inhibitory behaviour of ethyl esters of N-(3- and N-(4-amidinobenzoyl)(-L-)amino acids has been related to the interaction of the positively charged substituent at the N-position with the Asp189 residue present in the primary specificity subsite (S1) of bovine trypsin and porcine pancreatic kallikrein. The consistently lower affinity for porcine pancreatic kallikrein of all the inhibitors considered, as compared to bovine trypsin, may be related to the marked structural differences of the primary specificity subsite of these two serine proteinases. PMID- 3853514 TI - [Klinefelter's syndrome]. PMID- 3853515 TI - [Tumors of the adrenal cortex]. PMID- 3853516 TI - [Causes of hypoacusis in children and the means for its prevention]. PMID- 3853517 TI - [Nonrheumatic carditis in children]. PMID- 3853518 TI - [Characteristics of ECG recording during medical first aid]. PMID- 3853519 TI - [Uterine myoma initiating a spontaneous abortion]. PMID- 3853520 TI - [The gastralgic variant of myocardial infarct. Heart block]. PMID- 3853521 TI - [Anti-alcohol hygiene education in school]. PMID- 3853522 TI - [Supplementary grounds for the abrogation of a labor agreement]. PMID- 3853524 TI - The impact of titling and licensure on nursing education. PMID- 3853523 TI - [Legal and ethical problems related to new diagnostic and treatment methods]. PMID- 3853526 TI - Equipment--choosing a chair. PMID- 3853525 TI - Circulating human leucocyte elastase in patients with inflammatory bowel disease. AB - The plasma concentration of human leucocyte elastase (HLE), measured by enzyme immunoassay as the complex with alpha 1-proteinase inhibitor, was determined in 94 patients with active and inactive inflammatory bowel disease. In Crohn's disease and in ulcerative colitis human leucocyte elastase levels were raised significantly above normal when the disease was active, and fell on remission. The mean human leucocyte elastase level in 31 cases of active Crohn's disease was significantly greater than the mean human leucocyte elastase level in 23 patients with active ulcerative colitis (p = 0.013). The values of human leucocyte elastase correlated significantly with Crohn's disease activity index scores (p = 0.05) and with the circulating concentration of C-reactive protein (p less than 0.05 and p less than 0.01 for ulcerative colitis and Crohn's disease respectively), but not with the erythrocyte sedimentation rate. These results indicate that the concentration of human leucocyte elastase in the plasma of patients with inflammatory bowel disease reflects the activity of their intestinal disease and suggest that serial measurements of human leucocyte elastase may be useful in the assessment and clinical management of these conditions. PMID- 3853527 TI - A personal experience of ageing. PMID- 3853528 TI - Nursing in paradise. PMID- 3853529 TI - Duty rotas--a change for the better? PMID- 3853530 TI - [Horton's disease]. PMID- 3853531 TI - [Calcium]. PMID- 3853532 TI - [Varicose veins of the lower extremities]. PMID- 3853533 TI - [Magnesium in 1985]. PMID- 3853534 TI - [Esophageal cancer]. PMID- 3853535 TI - The Commission of inquiry on health and related social services: a heavy workload for our Corporation. PMID- 3853537 TI - My solidarity towards patients. Interview by Guylaine Campion. PMID- 3853536 TI - Deductible cash payments. PMID- 3853539 TI - Alzheimer's disease. PMID- 3853538 TI - [Vision disorders in children]. PMID- 3853540 TI - [The Michel Sarrazin House: tenderness from the first...]. PMID- 3853541 TI - [The Charles LeMoyne Hospital support an equality program to aid addicted employees]. PMID- 3853542 TI - Women, health and culture. PMID- 3853543 TI - Using grounded theory methodology to study women's culturally based decisions about health. PMID- 3853544 TI - Culturally induced stress during childbearing: the Philipino-American experience. PMID- 3853545 TI - A comparison of culturally approved behaviors and beliefs between Philipina immigrant women, U.S.-born dominant culture women, and Western female nurses of the San Francisco Bay area: religiosity of health care. PMID- 3853546 TI - Culture shock and the working woman: surviving West Coast to Northern Louisiana relocation. PMID- 3853547 TI - Women's health and the self-care paradox: a model to guide self-care readiness. PMID- 3853548 TI - Women's health and the self-care paradox: case study and analysis. PMID- 3853549 TI - Teaching transcultural nursing in Louisiana from the ground up: strategies for heightening student awareness. PMID- 3853550 TI - the cultural decision-making model: focus--circumcision. PMID- 3853551 TI - The ethno-market theory: factors influencing childbearing health practices of Northern Louisiana black women. PMID- 3853552 TI - The Vietnamese woman: health/illness attitude and behaviors. PMID- 3853553 TI - Ideology and illness experiences of women in Guatemala. PMID- 3853554 TI - Perceptions of problematic behavior by Southern female black fundamentalists and mental health professionals. PMID- 3853555 TI - Prevention and health care. PMID- 3853556 TI - New models for women's health care. PMID- 3853557 TI - Collaborative approaches using traditional and nontraditional providers of women's health care in the Philippines. PMID- 3853558 TI - Health problems of women in Jamaica. PMID- 3853559 TI - My body, my self. PMID- 3853560 TI - Effects on elderly women's self-care in case of acute hospitalization as compared with men. PMID- 3853561 TI - Women's health: directions for the 1980s. PMID- 3853562 TI - Large scale isolation and some properties of AGY-specific serine tRNA from bovine heart mitochondria. AB - A method was developed for large scale isolation of AGY-specific serine tRNA (tRNASerAGY) from bovine heart mitochondria. By this method, 5 A260 units of tRNASerAGY were recovered from 6.3 kg of bovine hearts. The nucleotide sequence was identical to that reported previously. tRNASerAGY showed abnormal melting profiles, as was predicted from its unique primary sequence. Its secondary and/or tertiary structure was analyzed by nuclease digestion method. It was suggested that three extra base pairs could occur in the anticodon stem region, with one adenosine residue protruding. The T loop was quite sensitive to nuclease S1, suggesting that the T loop doesn't interact with other regions. This finding is consistent with the model proposed by Sundaralingam (1980). tRNASerAGY was aminoacylated in vitro with only mitochondrial enzyme but not with the enzymes from E. coli and yeast. The aminoacylation rate of tRNASerAGY with mitochondrial enzyme was much faster than that of cytosolic tRNASerUCN, perhaps reflecting differences due to the presence and absence of the D arm of the tRNAs. PMID- 3853564 TI - The education of nurses: a new dispensation. The report of the RCN Commission on Nursing Education. PMID- 3853565 TI - Sisters in Dutch hospitals. AB - This study focuses on hospital sisters in 30 Dutch hospitals. The so-called role set approach has been adopted. In this approach the sisters are the focal persons. Direct superiors, specialists, registered nurses and student nurses acted as role-senders. The possible number of respondents is 600 (120 of each group). The response of hospital sisters is 100%, that of role-senders 88%. The study started out as an attempt to collect background information on the causes of wastage of sisters. High wastage rates are generally regarded as an indication of an unfavourable working environment. Since hospital sisters occupy a key position in hospitals, the ward problems will be studied from their angle. Although wastage rates have dropped recently, it does not necessarily follow that the working environment has improved. Wastage is known to act as a safety valve, thus allowing tensions to resolve. The threat of unemployment clogs this outlet, which increases the tensions on the hospital ward. Data from the study show that work overload is one of the major stress factors for sisters. Analyses demonstrated that there exists a relationship between work overload and tensions with the management and direct superiors, tensions in job execution, irritableness on the ward, low self-esteem, health complaints and psychological condition. Sisters with an excessive job involvement refer to work overload more often than their moderate colleagues. There is a relationship between an unfavourable working environment and irritableness of sisters. PMID- 3853563 TI - Nerve growth factor biosynthesis: isolation and characterization of a guinea pig prostate kallikrein. AB - Guinea pig prostate contains one major soluble esteropeptidase activity. The protein has been purified and characterized and found to be a glycoprotein comprised of a single polypeptide chain. The molecular has a similar Km for lysine and arginine synthetic substrates, although the Vmax for arginine is much greater than that for lysine. Amino-terminal sequence analysis has also revealed a marked degree of homology to mouse gamma-nerve growth factor (NGF) and the kallikrein family of serine proteases. In contrast to gamma-NGF, however, the guinea pig enzyme does not appear to form stable complexes with beta-NGF. PMID- 3853566 TI - Loss and grief reactions as responses to surgery. AB - Using autobiographical material, the patient experience of major surgery (panproctocolectomy and ileostomy) is described. A number of stages are identified in the patient experience: the development of dependence before surgery; disconnectedness from the social world immediately after surgery; and reality shock as grief and loss became apparent. The data are analysed using a theoretical perspective originally developed to describe reactions to bereavement. The practical nursing and counselling implications deriving from the theoretical model are elaborated. PMID- 3853567 TI - Antecedents of baccalaureate student nurses' attitudes toward the elderly. AB - The relationship between certain psychosocial characteristics of 122 baccalaureate nursing students and their attitudes toward the elderly was determined using multiple stepwise regression. Collectively the psychosocial characteristics accounted for 11-14% of the variance in attitude scores on four of the seven attitude dimensions, specifically, realistic toughness toward the elderly, anxiety about ageing, family responsibility and unfavourable stereotyping of the elderly. PMID- 3853568 TI - A study to determine what variables predict institutionalization of elderly people. AB - The purpose of this study was to determine which variables distinguish newly institutionalized elderly people from elderly people able to remain in the community. The findings suggest that old age and lack of a social support network are major predictors of institutionalization rather than health and social variables. PMID- 3853569 TI - A baseline study for the development of an instrument for the assessment of pain. AB - This study was designed to establish a foundation for the further development of a pain assessment tool for use in clinical practice. It was earlier reported that there existed a significant difference in the intensity of the words pain, ache and hurt and that each of these concepts had their own specific sensory and affective word descriptors. This study was designed to: 1 find out if the above results could be verified by using subjects with a different background from those included in the previous study; 2 determine the intensity of word descriptors; and 3 determine if patients, nurses and nursing students use the same word descriptors to describe pain-like experiences. Pain assessment tools used were the McGill Pain Questionnaire, a visual analogue scale and a pain, ache and hurt questionnaire. The results of the earlier reported study were confirmed. In addition, a significant difference was found in intensity of the word descriptors. Patients, nurses and nursing students used basically the same word descriptor to describe pain-like experiences. The sensory word descriptors (crushing, sharp, tearing, cutting, penetrating, gnawing, dull, pulling, sore, stinging, pricking and pinching) and the affective word descriptors (dreadful, torturing, killing, unbearable, terrifying, suffocating, exhausting, unhappy, troublesome, annoying, irritating and fearful) are suggested as a foundation upon which a pain assessment tool could be developed for use in clinical practice. PMID- 3853570 TI - Evaluating handwashing technique. AB - Though standards for handwashing have been defined, little effort has been made to assess the quality of handwashing in clinical settings. This paper describes tests of reliability and validity of tools to evaluate two aspects of handwashing -appropriateness and technique. Based on these tests, methods to evaluate handwashing are recommended. PMID- 3853571 TI - Nursing theory: a vehicle of professionalization? AB - Nursing's bid for professional status has been and continues to be a hotly debated issue. Much of the debate rests upon the question of what exactly the word professional implies, for many nurses do in fact consider themselves to be professionals while others would disagree. This paper suggests that nursing is not a profession but it is engaged in the process of professionalizing. A professionalizing occupation utilizes various vehicles to reach its own ends and, for nursing, it is suggested that the development of nursing theory at basic and complex levels is one such vehicle. Selected professional criteria are examined and it is shown that nursing theory development aids in the attainment of these criteria, thereby allowing nursing to become more professionalized. PMID- 3853572 TI - The feasibility of students with a predominantly arts educational background coping with the physiology component of a university nursing degree programme. AB - In this paper the authors discuss their experiences in admitting students with an arts 'A' (advanced) level General Certificate of Education background to an undergraduate nursing degree course. Firstly, the implications of students' different cognitive styles, both professionally and in teaching, are examined. Secondly, there is a description of an introductory course that has been used to assist students in the arts-science transition. Finally, the performance of 'arts' students, in a physiology course over a 6-year period is described, analysed and discussed. The proposition emerges that arts students may be disadvantaged initially by having not only a lack of knowledge in physiology, but a different cognitive style to science specialists. The results of the students' examination performance over 6 years suggests that with the provision of only a limited amount of special help 'arts' students can perform as well as the 'science' students in physiology examinations. Other variables which may have contributed to this positive outcome are discussed. PMID- 3853573 TI - The impact of client selection on clinical teaching. AB - Inclusion of gerontological nursing in curricula is emerging as an issue of concern to faculty of schools of nursing. Using research findings which view the setting and client selection as major determinants of learning outcomes, faculty are experimenting with teaching strategies which support a positive more realistic view of the elderly and their inherent potential and motivation for health. This paper examines the learning outcomes about ageing of a senior clinical experience at the baccalaureate level directed toward learning to nurse the elderly in a responsive and health promoting manner. Students were provided with an opportunity to become comfortable working with the elderly and their families in order to: 1 increase their level of knowledge about the process of ageing; and 2 incorporate this knowledge within a nursing framework by identifying critical aspects of development used in the health assessment of the elderly. The method of study was primarily experiential in nature with each student making a series of home visits over a 3-month period to one selected client family. Two groups of clients participated in the programme: clients in group A were maintaining themselves in their own homes, were not anticipating institutionalization and were in good health; clients in group B were in hospital for treatment of a major health problem but would be recuperating in their own homes. By using Palmore's Facts on Ageing Quiz, it was determined that client selection did in fact make a difference vis-a-vis learning outcomes about ageing and the aged. PMID- 3853574 TI - The needs of families who care for patients with cancer at home: are we meeting them? AB - A diagnosis of cancer in a family member has an impact on the entire unit. A study was conducted to determine needs perceived by families as they met the care requirements of such patients, to assess how families coped with these needs and to determine the resources they utilized. Families were selected from a stratified random sampling of patients who were receiving treatment at a local cancer clinic. Classification was by sex and site of disease. Families were interviewed in their homes. Descriptive statistics were used to summarize the data. Chi-square test of independence was conducted on selective qualitative variables. Eighty-three family members consisting of 43 males and 40 females with average ages 53 and 54 years respectively participated in the investigation. Families needed assistance with the physical care of patients. As many as 31% of them were coping poorly with this area of care. There were also several unmet needs in the psychosocial domain. The need most frequently expressed by families was for a place where they could turn to discuss their fears. Nineteen (23%) of the families knew of community services they could call on for assistance. Only seven (8%) of the families had utilized these services. These results suggest that fresh approaches might be needed in order to achieve our goal of family focused care. PMID- 3853575 TI - Does aging magnify the danger of burn injury? Part 2. PMID- 3853577 TI - Acute care patients can stay active. PMID- 3853576 TI - What are the health practices of retired career women. PMID- 3853579 TI - Food preference surveys work! PMID- 3853578 TI - Possible renal effects of nonsteroidal anti-inflammatory drugs. PMID- 3853580 TI - Convey respect during bathing procedures. PMID- 3853581 TI - Influence of mevinolin on metabolism of low density lipoproteins in primary moderate hypercholesterolemia. AB - Mevinolin, a competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A reductase, was used for treatment of 12 patients with moderate hypercholesterolemia, but not classical familial hypercholesterolemia. For most patients, measurements of turnover of low density lipoprotein-apolipoprotein B (LDL-apoB) were made on placebo and during treatment with two doses of mevinolin. LDL turnover was determined after injection of autologous 125I-labeled radioiodinated LDL. Compared to placebo, a low dose of mevinolin (10 mg, twice daily (BID] caused reductions of plasma total cholesterol and LDL-cholesterol averaging 15% and 20%, respectively; corresponding reductions on high doses of mevinolin (20 mg BID) were 22% and 31%, respectively. Triglyceride levels were unchanged by the drug. High density lipoprotein cholesterol levels rose significantly on the high dose, but not on the low dose. Neither dose produced a stastistically significant change in fractional catabolic rate (FCR) for LDL-apoB for the whole group, although several patients had increases in FCR on both doses. In contrast, both doses of mevinolin caused decreases in production rates of LDL-apoB. Thus, the fall in LDL levels in patients with moderate hypercholesterolemia can be explained more by a reduction in the input rate of LDL-apoB than by enhanced fractional removal of LDL from the circulation. PMID- 3853582 TI - Magnetic resonance imaging: new horizon in diagnostic techniques. AB - Magnetic Resonance Imaging (MRI) as a new diagnostic technology has the capacity for both imaging of body tissues or organs in action and spectroscopy which examines the chemistry of individual cells in health and disease. The principles and application of imaging without the use of ionizing radiation are presented. Potential hazards associated with magnetic resonance imaging center primarily around metal implants, metal prosthesis, and cardiac pacemakers. While this scanning is considered a painless procedure, there are several areas where patient teaching and support are important. PMID- 3853584 TI - Pineal region brain tumors. AB - Pineal region brain tumors occur in and around the pineal gland, a small cone shaped structure in the posterior portion of the diencephalon. Pineal tumors can be divided into four basic categories: 1) germ cell tumors, 2) pineal tumors, 3) supporting cell tumors, and 4) cysts, or non-malignant conditions. Germinomas, one type of germ cell tumors, are the most common type of pineal region tumor. In overall incidence, pineal region tumors are relatively uncommon; however, because these tumors are mainly diagnosed in childhood and young adulthood, the incidence in that age group has been reported as high as nine percent. Pathophysiology and signs and symptoms are discussed as well as medical treatment and nursing care. The case study is a presentation of a 22-year-old male with a pineal region tumor. PMID- 3853583 TI - Risk factors associated with ulnar nerve compression in bedridden patients. AB - This study was undertaken to determine the incidence of ulnar nerve compression in patients on bedrest and to determine which historical risk factors and assessment measures were most predictive of ulnar nerve compression. Thirty subjects were chosen from the orthopedic, neurological/neurosurgical, and rehabilitation units of two teaching hospitals. The incidence of ulnar nerve compression in this population was 23 percent (seven cases). The overall incidence of compression was then compared with the incidence of subjects having certain risk factors. A combination of two risk factors in subjects carried a greater relative risk of ulnar nerve compression than the presence of single risk factors alone. Using multiple regression analysis, the best multivariate model consisted of four variables which explained 72.8 percent of the variance in ulnar nerve compression. The findings suggest the use of an elbow flexion test and simple questioning as a method for screening patients at higher risk of ulnar nerve compression. PMID- 3853586 TI - Children of alcoholic families. A group treatment approach for latency age children. PMID- 3853585 TI - Professional nursing care of the patient with increased intracranial pressure: planned or 'hit and miss'? AB - Consistent and conscientious nursing care and assessments are known to have significant impact on the morbidity and mortality associated with increased intracranial pressure. These authors reviewed 100 charts to assess the documentation of nursing care for patients with actual or potential increased intracranial pressure. When their audit revealed fragmented and inconsistent documentation, they published and inserviced general guidelines (a standard care plan) utilizing nursing diagnoses. The audit criteria and subsequent standard care plan are provided in this article. Questions which were raised during the endeavor are presented as suggested areas for future nursing research. PMID- 3853587 TI - The crisis home. Sheltering patients in emotional crisis. PMID- 3853588 TI - Group support for the families of psychiatric patients. AB - The use of such a group model would seem to be useful for all families of psychiatric patients, and most particularly, for families experiencing an initial hospitalization episode. The benefit of mutual support, it is concluded, is a powerful and effective means of meeting the needs of families during the hospitalization phase of the patient's illness. PMID- 3853589 TI - Conflict detour. Therapist at work. PMID- 3853590 TI - From wife to widow. Role transition in the elderly. PMID- 3853591 TI - Sensitivity of Salmonella and Shigella to antibiotics and chemotherapeutic agents in Sudan. AB - Antibacterial sensitivity tests were done for 513 salmonellae and 133 shigellae. Salmonella strains were divided into three groups: 336 Salmonella typhi, 134 salmonellae isolated from cases of gastroenteritis and 43 salmonellae isolated from non-human sources. All salmonellae and shigellae were sensitive to chloramphenicol. All salmonellae were sensitive to co-trimoxazole, while shigellae showed 18% of resistance. Salmonella resistance to ampicillin was low compared with a high resistance in shigellae. No resistance to from non-human sources. In analysing the resistance pattern in the 4-year period 1979-1982, it was found that there was a rising resistance to ampicillin and sulphonamides in salmonellae. In contrast there was no significant increase in resistance to tetracycline. Tetracycline resistance was high in cases of salmonellae isolated from gastroenteritis. A comparatively low resistance to streptomycin was detected in Salmonella isolated from non-human sources. PMID- 3853592 TI - [Types of head injuries and their clinical symptoms]. PMID- 3853593 TI - [Management and keypoints in the care of patients with head injuries on admission]. PMID- 3853594 TI - [Procedures in the diagnosis of head injuries--diagnostic methods and determination of surgical indications]. PMID- 3853595 TI - [Nursing of patients with head injuries at admission--practice of nursing at patients' arrival]. PMID- 3853596 TI - [Coordination of the care of patients with head injuries--correlation of the emergency care until surgery]. PMID- 3853597 TI - [Major postoperative complications in head injuries and their management]. PMID- 3853598 TI - [Postoperative care of patients with subdural hematoma]. PMID- 3853600 TI - [Postoperative care of patients with a fracture of the base of the skull]. PMID- 3853599 TI - [Postoperative care of patients with subdural hematoma]. PMID- 3853601 TI - [Nursing of patients with cognition disorders due to head injuries--physical stimulation and its effects]. PMID- 3853602 TI - [Nursing of a patient with cognition disturbance due to a head injury]. PMID- 3853603 TI - [Nursing of a patient with a head injury with complications]. PMID- 3853604 TI - [Nursing of patients with head injuries and associated mental disorders]. PMID- 3853605 TI - [Nursing of an aged patient with a head injury undergoing craniotomy]. PMID- 3853606 TI - [Nursing of a child with subarachnoid hemorrhage and brain contusion due to a head injury]. PMID- 3853607 TI - [Social work for patients with head injuries--psychological and social problems and the practice of assistance]. PMID- 3853608 TI - [Delivery by cesarean section and the care of the patient]. PMID- 3853609 TI - [Cesarean section and the practice of nursing]. PMID- 3853610 TI - [Surgical treatment of phantom limb]. PMID- 3853611 TI - [Multiple organ failure--lung disorders]. PMID- 3853613 TI - [New dental care using lasers]. PMID- 3853612 TI - [Chorionic villi sampling for the diagnosis of fetal anomalies]. PMID- 3853614 TI - [Aberrant food habits and psychophysiological disturbances]. PMID- 3853615 TI - [Nursing of a patient with chronic liver disease associated with liver cancer- nursing of the patient with postoperative complications and his awareness of the nature of the illness]. PMID- 3853616 TI - [Care of the urinary stoma (11). The practice of stoma care]. PMID- 3853617 TI - Contraction independent of extracellular Ca by sodium vanadate in guinea-pig vas deferens. AB - The effects of Ca removal and Ca antagonists on sodium vanadate-induced contractions of the guinea-pig vas deferens were studied. Sodium vanadate-induced tension development could be observed even 120 minutes after the removal of Ca, whereas K-contracture disappeared within 20 minutes. Spontaneous contractions induced by sodium vanadate were abolished by the removal of Ca. Verapamil and nifedipine did not show any effect on sodium vanadate-induced contraction, contrastingly, they blocked spontaneous contractions initiated by sodium vanadate. The effects of sodium vanadate on Ca contracture of depolarized preparations were also studied. Though the drug potentiated phasic contraction, it did not potentiate tonic component of Ca contracture. It was demonstrated that sodium vanadate induced tension development independently of extracellular Ca, presumably by releasing intracellularly bound Ca. PMID- 3853619 TI - Holidays--feast or fast? PMID- 3853618 TI - Effects of sodium vanadate on the smooth muscle of the guinea-pig vas deferens. AB - Effects of sodium vanadate on electrical and mechanical activities of smooth muscle of the guinea-pig vas deferens were investigated. Sodium vanadate of concentrations higher than 5 X 10(-6) M caused an elevation of basal tension and, at concentrations higher than 5 X 10(-4) M, initiated spontaneous contractions. These effects were not blocked by treatments with reserpine, tetrodotoxin or phentolamine. Treatment with ouabain also did not block the tension development by sodium vanadate. Sodium vanadate caused slight depolarization of membrane and potentiated spike activities. The phasic contraction of potassium contracture was potentiated by sodium vanadate in a similar manner to pretreatment with 15 mM K+ or with ouabain, both treatments occasioning slight depolarization. Sodium vanadate also caused tension development in K-depolarized preparetions. Contrastingly, drug-induced contractions were not significantly affected by sodium vanadate. It is suggested that sodium vanadate acts directly on smooth muscles and causes tension development without relation to Na, K-ATPase activity. Changes in the membrane electrical activities may be part of the cause of contraction. However, it can also initiate tension development without membrane potential changes, presumably acting on intracellular Ca binding sites. PMID- 3853620 TI - Chemotherapy and home health care--special-touch nursing. PMID- 3853621 TI - Oncology nursing in Kansas: development, practice and roles. PMID- 3853622 TI - [Nurse manpower in the 2000s]. PMID- 3853623 TI - [Nursing education in the 2000s]. PMID- 3853624 TI - [Psychosocial nursing care of the patient with acute bleeding]. PMID- 3853625 TI - [Nursing care of the patient with acute bleeding--panel discussion]. PMID- 3853626 TI - [The nurse specialist]. PMID- 3853628 TI - [Clinical nephrology nurse specialist and its perspectives in our country]. PMID- 3853627 TI - [Trends in cancer nursing and the clinical nurse specialist]. PMID- 3853629 TI - [Knowledge of and attitude toward anemia during pregnancy]. PMID- 3853630 TI - [A study of the utilization of part-time nurses for work]. PMID- 3853631 TI - [Nursing in the 2000s]. PMID- 3853632 TI - [Theoretical approach to family therapy in Korea. I]. PMID- 3853633 TI - [An experience in psychiatric care. Alternative towards professional autonomy]. PMID- 3853634 TI - [8th meeting of the Work Group of European Nurse Researchers in Vienna, 22-24 September 1985. Research and teaching: what will be their future?]. PMID- 3853635 TI - [Nursing care in psychiatry. The stage of semiprofessionalization]. PMID- 3853636 TI - [Profession and professional image. No more acting in the background]. PMID- 3853637 TI - [Infant health counseling nurse. An example from practice. Knowledge for mind heart and hand]. PMID- 3853638 TI - [How does one become an infant health counseling nurse?]. PMID- 3853639 TI - [2 arrangements in Vienna. The aim of nursing research is better care of the sick]. PMID- 3853640 TI - [Evaluation of the first professionally-organized faculty education. A good foundation for the future]. PMID- 3853641 TI - [Resuscitation in today's clinical practice]. PMID- 3853642 TI - [Extracorporeal shockwave lithotripsy]. PMID- 3853643 TI - [What is phytotherapy--possibilities and limitations]. PMID- 3853644 TI - [Origins and forms of the hyperkinesis syndrome]. PMID- 3853645 TI - Clinical analysis and experimental observation on acupuncture and moxibustion treatment of patellar tendon terminal disease in athletes. PMID- 3853646 TI - Clinical study on 500 cases of cerebro-vascular hemiplegia treated by acupuncture through baihui to qubin. PMID- 3853647 TI - Effects of wu-ling-san on alcohol metabolism and alcoholic liver. PMID- 3853648 TI - The treatment of mental retardation in children by tonifying the kidney. PMID- 3853649 TI - Clinical observation on treatment of disorders of the optic nerve by acupuncture. PMID- 3853650 TI - The mechanism of muscular internal dynamic force in the treatment of femoral shaft fracture by integrated traditional Chinese and Western medicine. PMID- 3853651 TI - Experimental observation of the effects of heat-reinforcing and cold-reducing manipulations. PMID- 3853652 TI - Introductory remarks on the clinical application of moxibustion. PMID- 3853654 TI - [Imagination and something like nursing]. PMID- 3853655 TI - [Encounter with literature and the nursing mind]. PMID- 3853653 TI - Nine years' experience in acupuncture & moxibustion therapy. PMID- 3853656 TI - [For nurses who want to write things such as poems, drama, novels, etc.; nurses are witnesses of reality of people and the era]. PMID- 3853657 TI - [Responsibility of nursing; through quantitative research on patients', physicians' and nurses' concept of nursing]. PMID- 3853658 TI - [Humanization of sciences and women's studies; case of the field of psychology (discussion). II]. PMID- 3853659 TI - [STAT: Special Techniques in Assertiveness Training for Women in the Health Professions]. PMID- 3853660 TI - [On-the-job training of staff nurses in the nursing process]. PMID- 3853661 TI - [Instruction of students' practice of nursing in alcohol dependence unit]. PMID- 3853662 TI - [Methods and effects in teaching "the technic of physical examination of the adult" to student nurses]. PMID- 3853664 TI - [On privacy relating to the patient]. PMID- 3853663 TI - [A method to instruct the students in case studies of nursing]. PMID- 3853665 TI - [Staff education about patient's privacy]. PMID- 3853666 TI - [Problems with invasion of privacy from using computers in health care systems]. PMID- 3853668 TI - [Nursing of a patient with pain on bed rest. A study of the interaction of the nurse with the pain patient]. PMID- 3853667 TI - [Responsibility of health personnel to protect patients' privacy]. PMID- 3853669 TI - [Being a nurse and being a woman. 10]. PMID- 3853670 TI - [STAT; Special Techniques in Assertiveness Training for Women in the Health Professions. 4]. PMID- 3853672 TI - [Home visit practice for nursing students]. PMID- 3853671 TI - [Analysis of nursing services using a work sampling method]. PMID- 3853673 TI - [Progress in students nurses' ability to observe patient]. PMID- 3853674 TI - [Teacher's involvement in the process learning helping behavior]. PMID- 3853675 TI - [Competence in clinical nursing which nursing instructors are expected to possess]. PMID- 3853676 TI - [Problems in education of nursing arts]. PMID- 3853677 TI - [Tasks in teachers' teaching; from the viewpoint of special nursing education]. PMID- 3853678 TI - [Teachers' ability in clinical nursing]. PMID- 3853679 TI - [Unification model of practice, education and research]. PMID- 3853680 TI - [Assessment and care of the patient with pain]. PMID- 3853681 TI - [Being a nurse and a woman]. PMID- 3853682 TI - [STAT: Special Techniques in Assertiveness Training for Women in the Health Professions]. PMID- 3853683 TI - [The current status of nursing studies at Sangyo Medical University]. PMID- 3853684 TI - [Research on learning program in bandaging]. PMID- 3853685 TI - [Research on school attendance of students of nursing courses]. PMID- 3853686 TI - [Physiopathology of Kawasaki disease and daily activities and prognosis of the affected children]. PMID- 3853687 TI - [Diagnostic and therapeutic processes for children with Kawasaki disease]. PMID- 3853688 TI - [Keypoints in nursing observation of children with Kawasaki disease]. PMID- 3853689 TI - [Nursing plans for children with Kawasaki disease]. PMID- 3853690 TI - [Nursing of a child in an acute stage of Kawasaki disease associated with severe heart disease]. PMID- 3853691 TI - [Response to the needs of patients in early infancy and their mothers. A discussion]. PMID- 3853692 TI - [A lesson in psychiatric nursing: a report. Creation of "stained glass" windows using cellophane--improvement of the environment through recreational activities]. PMID- 3853693 TI - [Nursing of a schizophrenic patient with accentuated stereotyped behaviors and a difficulty in participating in group activities]. PMID- 3853695 TI - [Interactions with a dying cancer patient: enjoyment of life with a single cigarette]. PMID- 3853694 TI - [A lesson in interactions with a leukemic child who refused medication]. PMID- 3853696 TI - [Test yourself. Nursing of a primigravida with labor induction due to prolonged pregnancy--throughout the periods of pregnancy and delivery]. PMID- 3853697 TI - [Care of aged patients following discharge from hospitals]. PMID- 3853698 TI - [Family problems concerning aged patients being discharged from the hospital]. PMID- 3853699 TI - [Aged patients without families and problems at their discharge: a need of continuing nursing]. PMID- 3853700 TI - [Home visiting to find the progress of aged patients following hospital discharge]. PMID- 3853701 TI - [Nursing of a young insulin-dependent patient to improve self care--diet education of a patient who was impatient and unreceptive to health instructions]. PMID- 3853702 TI - [Physiopathology of SLE and daily activities and prognosis of SLE patients]. PMID- 3853703 TI - [Diagnostic and therapeutic processes for patients with SLE]. PMID- 3853704 TI - [Keypoints in nursing observation of SLE patients]. PMID- 3853705 TI - [Nursing plans for SLE patients]. PMID- 3853706 TI - [Nursing of an SLE patient who developed a difficulty in walking and was hospitalized for the 5th time]. PMID- 3853707 TI - [Nursing of SLE patients. A discussion. Possible misunderstanding between the patient and nursing personnel]. PMID- 3853708 TI - [Nursing report: psychological care of patients. Exchange of diaries to detect the patient's apprehension]. PMID- 3853709 TI - [Nursing report: psychological care of patients. Interactions with a child who refused to go to school--interactions through inhospital classes, assistance toward return to a local school, and progress thereafter]. PMID- 3853710 TI - [Assistance in extension of ADL of a patient with a mild cognition disorder--a patient after the third apoplexy attack]. PMID- 3853711 TI - [Test yourself. Nursing of an HBAg-positive puerperal patient]. PMID- 3853712 TI - [Nursing of an adolescent patient with anorexia nervosa--reinforcement of positive behaviors leading to normal eating]. PMID- 3853713 TI - [Understanding of daily activities which leads to psychological understanding]. PMID- 3853715 TI - [Nursing deeply rooted in patients' lives]. PMID- 3853714 TI - [Education and training of diabetic patients for daily diabetic control]. PMID- 3853716 TI - [Interactions with a dying cancer patient. The importance of honest communication between the patient and nursing personnel superceding the question of the disclosure of the nature of illness]. PMID- 3853717 TI - Cutaneous melanoma: differential diagnosis. PMID- 3853718 TI - Antidepressants and the cardiovascular system. PMID- 3853719 TI - CPR: a survey of Maryland hospitals. PMID- 3853720 TI - Cardiac arrest: it happened to me. PMID- 3853721 TI - Congenital cardiovascular malformations in the Baltimore-Washington area. PMID- 3853722 TI - The many faces of apical hypertrophic cardiomyopathy. PMID- 3853724 TI - [Work prognosis of patients with postthrombophlebitis disease of the lower extremities]. PMID- 3853723 TI - A caricaturist's view of French physicians. PMID- 3853725 TI - [Work prognosis of patients following an endoprosthetic operation on the hip joint]. PMID- 3853726 TI - [Hypertensive syndrome in kidney diseases in children and its treatment]. PMID- 3853727 TI - [Physiotherapy in the treatment of chronic tonsillitis]. PMID- 3853728 TI - [Point massage and its use in nervous system diseases]. PMID- 3853729 TI - [Tasks of the paramedical team in the medical exercise therapy service]. PMID- 3853730 TI - [Method of preparing for venepuncture in the case of insufficiently developed veins]. PMID- 3853731 TI - [Care of subclavian catheters]. PMID- 3853732 TI - [Performing disinfection in outpatient polyclinical institutions]. PMID- 3853733 TI - [Disinfection of patient care items and medical instruments]. PMID- 3853734 TI - [Methods and agents for disinfecting the apparatus for inhalation anesthesia and artificial pulmonary ventilation]. PMID- 3853735 TI - [Organization of the nurses's work in school]. PMID- 3853736 TI - [Migraine]. PMID- 3853737 TI - [Freckles]. PMID- 3853738 TI - [Deontology for paramedical personnel in orthodontic dentistry]. PMID- 3853739 TI - [Most important factors of body immunobiological reactivity]. PMID- 3853741 TI - When your patients ask about salt and high blood pressure. PMID- 3853740 TI - Conceptualizing the future: an organizational imperative. PMID- 3853742 TI - Health visitors as group leaders. PMID- 3853743 TI - Child abuse and encopresis. PMID- 3853744 TI - Health visiting to the elderly in the community. PMID- 3853745 TI - Learning to be a ward sister. PMID- 3853746 TI - Teaching student nurses to use skills analysis. PMID- 3853747 TI - The instructor, the student and appeals. PMID- 3853748 TI - Training for health education with older people: a survey of district nurse and health visitor courses. PMID- 3853749 TI - Role of the clinical facilitator. PMID- 3853750 TI - Applying aspects of educational psychology to the practice of nurse teaching. PMID- 3853751 TI - An overview of the value of nursing models in relation to education. PMID- 3853752 TI - Politics and professionalism in nursing. PMID- 3853754 TI - The role of the anaesthetic nurse. PMID- 3853753 TI - Elastase activity of fungi with anamorphs similar to Coccidioides immitis. AB - The elastin digestion assay was examined to determine if it would facilitate the identification of Coccidioides immitis when non-pathogenic fungi resembling C. immitis are encountered. Fungal isolants tested have anamorphs that closely resemble the macroscopic or microscopic morphology of C. immitis. Elastin hydrolysis was measured by elastin-agar plate assays. Approximately 80% of the isolants hydrolyzed elastin; thus, the elastin digestion assay as a differential test appears to have little value. PMID- 3853755 TI - Nurse anaesthesia--USA today--UK tomorrow. PMID- 3853756 TI - Anaesthetic room nursing. PMID- 3853757 TI - Setting-up a refresher course in anaesthetic skills for theatre nurses. PMID- 3853758 TI - 1 August 1992: NATNews special report on theatre nurse shortage. PMID- 3853759 TI - Age and dependency: children and the aged in American social policy. PMID- 3853760 TI - Formula funding and regional planning of health services in Australia. PMID- 3853762 TI - Don't fall foul of the Act. PMID- 3853761 TI - Social roles and health trends of American women. AB - The statistical results concur closely with descriptive ones presented earlier, indicating that the latter are not results of random variations. The main effects of employment, the contingent effects of parenthood, and the time trends modeled here are the same as reported earlier. (Only two differences occur. First, among white married women, mothers have statistically more acute conditions than nonmothers. We saw this parenthood effect earlier for nonemployed married women, but not for employed ones [results were inconsistent]. The statistical analysis smooths those inconsistencies and reveals that employed mothers also experience more acute conditions than their nonmother peers. Second, among white married women, older housewives show statistically increased chronic limitation over time. Earlier we saw a rise for housewives without children. The latter parenthood effect is statistically smaller than the age effect.) The singular advantage of the statistical analysis has been its ability to highlight interaction effects among the variables, some of which were not considered in the descriptive section. Comparing the models, note how those for short- and long term disability are very similar to each other but distinctly different from the acute-condition models. This means that social roles and age influence short- and long-term disability in the same way. Specifically, both are greater for older and nonemployed women, being especially high for older nonemployed women and housewives without children. By contrast, the most consistent factor affecting acute-condition incidence and impact is presence of children. Children increase their mothers' experience of acute problems but reduce the amount of recuperative time and medical care taken for them. PMID- 3853763 TI - Nurse training--a new approach. PMID- 3853764 TI - Women's work: women's health. PMID- 3853765 TI - Reality submerged beneath the ideal? PMID- 3853766 TI - Exposure to titanium tetrachloride. PMID- 3853768 TI - Job evaluation for occupational health nurses. PMID- 3853767 TI - Professional misconduct--the burden of proof. PMID- 3853769 TI - Cleaner metal--cleaner air. PMID- 3853770 TI - [Witnessing dying]. PMID- 3853771 TI - [Value of life-preserving methods and diagnosis in aged and terminal persons- from a nurse's viewpoint]. PMID- 3853772 TI - [When the fascination ebbs]. PMID- 3853773 TI - [Therapy of essential periodontopathy]. PMID- 3853774 TI - [Documentation on patients--informational value for nursing care]. PMID- 3853776 TI - [Osteomyelitis]. PMID- 3853775 TI - [Perspectives for the future--1]. PMID- 3853777 TI - Determinations of urinary kallikrein and urinary kininase excretion in human hypertension. PMID- 3853778 TI - Effects of a conformational change in tRNA on its aminoacylation capacity: a study using enzymatically reconstructed variants of T. utilis tRNATyr. AB - Variants of T. utilis tRNATyr containing deletion or substitution of the "conserved" sequence Gm18-G19 in the D-loop have been enzymatically reconstructed in vitro. Conformational analyses of these variants by measuring melting profiles, electrophoretic mobility in "native" polyacrylamide gels, and by the analysis of RNase T1 digestion patterns on sequencing gels laid a stress on the significance of the Gm18-G19 sequence for the maintenance of L-shaped tertiary structure of tRNATyr. Aminoacylation assays with the variant tRNAs at various temperatures revealed that the highly ordered tertiary structure is needed for full aminoacylation capacity. PMID- 3853779 TI - A study of the interaction between tRNASer and seryl-tRNA synthetase from bovine liver. AB - Study by chemical modification of Ser, Arg, His residues and sulfhydryl groups on bovine seryl-tRNA synthetase showed that Ser residues appeared to be unnecessary for the recognition mechanism, but Arg and His residues were essential. It was considered that different sulfhydryl groups related with each recognition of tRNA and ATP. Poly-arginine inhibited the interaction between serine tRNA and SerRS. The CD spectra of a mixture of serine tRNA and poly-arginine indicated that higher-order structure of tRNA changed. Furthermore, the Km and Vmax values of bovine serine isoacceptor, yeast serine tRNA and E. coli serine tRNA for bovine SerRS examined and it was discussed the differences of those base sequences. PMID- 3853781 TI - Being objective about appraisal. PMID- 3853780 TI - Jasmine Beckford. Jasmine: the lessons to be learned. PMID- 3853782 TI - Project 2000: nurses united. PMID- 3853783 TI - Care about food. Feeding sick children. PMID- 3853784 TI - Responding to changing needs. PMID- 3853786 TI - Warning: Christmas can damage your health. PMID- 3853785 TI - Drifting away from the job. PMID- 3853787 TI - Christmas: received with thanks. PMID- 3853788 TI - A cosmic Christmas from star wards. PMID- 3853789 TI - Christmas: trivial nursing pursuit. PMID- 3853790 TI - Christmas can be a lone time in the community. PMID- 3853791 TI - Nurses becoming a social force: ethico-moral and spiritual dimensions. PMID- 3853792 TI - Nurses becoming a social force: psycho-social dimensions. PMID- 3853793 TI - The 1986 health budget: everybody's concern. PMID- 3853794 TI - Women, health and development. PMID- 3853795 TI - Nurses' rapid turnover: effects on quality nursing care. PMID- 3853796 TI - Women--the next ten years. PMID- 3853797 TI - [Corticosteroids in the treatment of the eye]. PMID- 3853798 TI - [Activity pays]. PMID- 3853799 TI - [Theory and practice]. PMID- 3853800 TI - [How to assess adaptation in the ward]. PMID- 3853801 TI - [The self image of patients]. PMID- 3853802 TI - [Training at my hospital]. PMID- 3853803 TI - [Health standards]. PMID- 3853804 TI - [How much does health cost. 5. Tasks for the future]. PMID- 3853805 TI - [Social adjustment of stroke patients]. PMID- 3853806 TI - [Count on the graduates. Interview by Iwona Krysiak]. PMID- 3853807 TI - [The difficulties are similar. Interview by Maria Lesnikowska]. PMID- 3853808 TI - [Resolution of the problems. Interview by Iwona Krysiak]. PMID- 3853809 TI - [For a Kind Human Heart. Interview by Krzysztof Tittenbrun]. PMID- 3853810 TI - [The conditions are just conditions]. PMID- 3853811 TI - [The 1st year, the 1st step...]. PMID- 3853812 TI - [Cancer of the prostate]. PMID- 3853813 TI - [Rectal and anal prolapse]. PMID- 3853814 TI - [Knowledge of nutrition]. PMID- 3853815 TI - [A modern urology department]. PMID- 3853816 TI - [Social aspects of hemophilia]. PMID- 3853817 TI - [The nurse must be at least kind]. PMID- 3853818 TI - [Tumors of the retina]. PMID- 3853819 TI - [Hospital infections in urology]. PMID- 3853820 TI - [The effects of artificial abortion]. PMID- 3853821 TI - [Adaptation]. PMID- 3853822 TI - [Role of collagen in the process of pulmonary emphysema]. PMID- 3853824 TI - [The female genital system. (3). Uterine stability (2): physiopathology of genital prolapses]. PMID- 3853825 TI - [Blood pressure measurement with an electronic tensiometer]. PMID- 3853823 TI - [The effect of a synthetic progestin (R 2323) on gonadal and endometrial cells in vitro and in vivo]. AB - Gestrinone (R 2323) is a synthetic progestogen, and noteworthy agent for endometriosis treatment. The effect of this reagent on cultured cells from porcine granulosa, human endometrial and endometrial carcinoma origin was investigated concerning their hormonal activities and cell proliferations. Also, the effect of gestrinone on the serum levels of gonadotropins and gonadal steroids in patients with XY gonadal dysgenesis (Swyer's syndrome) and uterine myoma was studied. The monolayer cell colony established from the endometrial tissue fragments was positively stained by PAS similar to the secretory phase endometrium by 10 ng/ml gestrinone in the culture media. Endometrial carcinoma cells from a 65-year-old patient were proliferated by gestrinone at the concentration of 50 ng/ml in the culture media. The effect of gestrinone on the secretions of progesterone and estradiol-17 beta with or without hCG/testosterone from the cultured porcine granulosa cells was also investigated. Progesterone secretions were stimulated at the 50 ng/ml concentration of gestrinone, especially in association with hCG. Nonetheless, at the concentration of 500 ng/ml, those were inhibited. The secretions of estradiol-17 beta were stimulated by this reagent both with and without testosterone in dose-dependent manners. The effect of 25 mg gestrinone administration for 3 days on the levels of LH, FSH, progesterone and estradiol-17 beta in a patient with XY gonadal dysgenesis was as follows. Both LH and FSH levels gradually decreased, whereas estradiol-17 beta level was increased. The same dosage of this reagent was administered to a patient with uterine myoma on her menstrual days 7, 8, and 9.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3853826 TI - [Admission of the newborn in the surgical setting]. PMID- 3853827 TI - [Preparation and treatment of esophageal atresia]. PMID- 3853828 TI - [Preoperative phase and aspects of anesthesia-intensive care in esophageal atresia]. PMID- 3853829 TI - [Role of the manipulator in the diagnosis of esophageal atresia]. PMID- 3853830 TI - [Role of the kinesitherapist in esophageal atresia]. PMID- 3853831 TI - [Esophageal atresia. General aspects]. PMID- 3853832 TI - [Maternal psychological problems in esophageal atresia]. PMID- 3853833 TI - [Esophageal atresia. Case report]. PMID- 3853834 TI - [Economic problems. The cost of hospitalization]. PMID- 3853835 TI - [Anesthesia and surgical intensive care. Emergency interventions]. PMID- 3853836 TI - [Preparation and transport of a newborn with esophageal atresia]. PMID- 3853837 TI - [The female genital apparatus (4). The vulva: urethral catheterization, perineal toilette, site of episiotomies]. PMID- 3853838 TI - [The water mattress (1). Material]. PMID- 3853839 TI - [Indications for hip arthroplasty with a total prosthesis]. PMID- 3853840 TI - [Surgical technic for total hip arthroplasty]. PMID- 3853841 TI - [The circulating nurse and the scrub nurse during total hip arthroplasty]. PMID- 3853842 TI - [Developments after total hip arthroplasty]. PMID- 3853843 TI - [Functional rehabilitation after total hip arthroplasty]. PMID- 3853844 TI - [Mr. D.'s total hip prosthesis. Case report]. PMID- 3853845 TI - [Total arthroplasty--the hip: introduction]. PMID- 3853846 TI - [Anesthesia-resuscitation for total hip or knee arthroplasty]. PMID- 3853847 TI - [Psychological aspects of hip or knee arthroplasty]. PMID- 3853849 TI - [Preoperative schedule for total arthroplasty]. PMID- 3853848 TI - [The nurse and the admission of the patient to the surgery department]. PMID- 3853850 TI - [Recall of the anatomy and physiology of the hip]. PMID- 3853851 TI - [Death in various cultures]. PMID- 3853852 TI - [Healing of suffering?]. PMID- 3853853 TI - [At the end of life, what quality of care?. Interview by Nadine Wehrlin]. PMID- 3853855 TI - [A precipitous departure]. PMID- 3853854 TI - [Death in an institution]. PMID- 3853856 TI - [Death and the law]. PMID- 3853857 TI - [Those old people who stay for a long time or: death in spite of everything]. PMID- 3853858 TI - [The quality of food]. PMID- 3853859 TI - [System of humidification in patients with mechanical ventilation]. PMID- 3853860 TI - [Oxygen therapy using the vented mask]. PMID- 3853861 TI - [Brucellosis]. PMID- 3853862 TI - [Relational aspects of nursing care]. PMID- 3853863 TI - [School health examination: acceptability and benefit]. PMID- 3853864 TI - [Technic of the intradermal Mantoux reaction. Tuberculin test]. PMID- 3853865 TI - [History of a nursing history]. PMID- 3853866 TI - [Prevention of infectious diseases in work centers]. PMID- 3853867 TI - [An experience of reorganization in a traumatology service]. PMID- 3853868 TI - [Ethics and pediatric nursing]. PMID- 3853870 TI - Nursing the AIDS patient. PMID- 3853869 TI - AIDS--what is it? PMID- 3853871 TI - AIDS. Protecting the health care worker. PMID- 3853872 TI - AIDS. Planning for the impact. PMID- 3853874 TI - AIDS. Testing program launched in Vancouver. PMID- 3853873 TI - AIDS. Caring for home patients. PMID- 3853875 TI - Being a Good Samaritan. PMID- 3853876 TI - [Duphalac]. PMID- 3853877 TI - [Fumafer]. PMID- 3853878 TI - [The insomnias]. PMID- 3853879 TI - [The hypersomnias]. PMID- 3853880 TI - [The parasomnias]. PMID- 3853881 TI - [Strategies and treatment of insomnia]. PMID- 3853882 TI - [The hygiene of living and sleep]. PMID- 3853883 TI - [Physiological aspects of sleep: sleeping and sleep disorders]. PMID- 3853884 TI - [Mental diseases and sleep]. PMID- 3853885 TI - [The patients' sleep and the nurse]. PMID- 3853886 TI - [Part-time physicians in public hospitals]. PMID- 3853887 TI - [Clinical study of sleep]. PMID- 3853888 TI - [The placing of a urine bag for a child]. PMID- 3853889 TI - [Evaluation check lists: an innovative tool in geriatrics?]. PMID- 3853890 TI - [Continuing education. Legislative part]. PMID- 3853891 TI - [Experiences and consequences of nurses' work]. PMID- 3853892 TI - [Family allowances (2)]. PMID- 3853894 TI - [Introduction of the nursing students into their residency]. PMID- 3853893 TI - [Which apprenticeship for what kind of nursing care?]. PMID- 3853895 TI - [From the command of activities to the command of a nursing situation]. PMID- 3853896 TI - [Survector]. PMID- 3853897 TI - [Etiology of mental debilities in children and adolescents admitted into a medico educational institute]. PMID- 3853898 TI - [Encephalopathies tied to a fragility of the X chromosome]. PMID- 3853899 TI - [Information of the families or "announcing the handicap to the parents"]. PMID- 3853900 TI - [Daily care of a severely retarded child in a medico-educational institution]. PMID- 3853901 TI - [Apprenticeship, work and severe retardation]. PMID- 3853902 TI - [Reflections on the strategies of a medico-educational institute]. PMID- 3853903 TI - [The nurse in a medico-educational institution]. PMID- 3853905 TI - [Apropos of reports. A look at 10 years of practical training]. PMID- 3853904 TI - [Continuing education in psychiatry]. PMID- 3853907 TI - [Thoracic pain caused by aortic diseases]. PMID- 3853906 TI - [Plans for the reorganization of the medico-pedagogical institute]. PMID- 3853908 TI - [Pericarditis and myocarditis]. PMID- 3853909 TI - [Pulmonary embolism]. PMID- 3853910 TI - [Thoracic pain. Diagnostic technics]. PMID- 3853911 TI - [The Greenfield filter]. PMID- 3853912 TI - [The psycho-social consequences of illness and hospitalization]. PMID- 3853913 TI - [Thoracic pain caused by coronary insufficiency]. PMID- 3853914 TI - [Baralgine]. PMID- 3853916 TI - [Pregnancy in the adolescent girl]. PMID- 3853915 TI - [Contraception in adolescence: knowing is not enough]. PMID- 3853917 TI - [Pregnancy and childbirth]. PMID- 3853918 TI - [Sabina's pregnancy ... case report]. PMID- 3853919 TI - [Feminine sports and health]. PMID- 3853921 TI - [The child and nursery school]. PMID- 3853922 TI - [The nurse in the presence of the death of a child. How to preserve the integrity of the care giver]. PMID- 3853920 TI - [Contraceptive methods for adolescents]. PMID- 3853923 TI - [Sexuality in adolescence. Sexually transmissible diseases]. PMID- 3853924 TI - [Sex and contraceptive information for adolescents]. PMID- 3853925 TI - [Salbutamol]. PMID- 3853926 TI - [The glucose balance in pregnant women]. PMID- 3853927 TI - [Detection of diabetes during pregnancy]. PMID- 3853928 TI - [The newborn infant of the diabetic mother]. PMID- 3853929 TI - [Therapeutic management. Surveillance]. PMID- 3853930 TI - [Advice to a young diabetic]. PMID- 3853931 TI - [Madame C., diabetic and pregnant. The role of the nurse]. PMID- 3853932 TI - [Prevention of hospitalism in young children]. PMID- 3853933 TI - [Primary health care activities in nursing homes. A development in phases]. PMID- 3853934 TI - [Different or 'customary'? The vertical labor position]. PMID- 3853935 TI - [You can do it this way... with one hand]. PMID- 3853936 TI - [Not cured but better. II]. PMID- 3853937 TI - [Iatrogenic disease and nursing]. PMID- 3853938 TI - [Team work: a matter of falling down and getting up (1)]. PMID- 3853940 TI - [Quality and emancipation. Interview by Jenneke Diepenbroek and Han Koch]. PMID- 3853939 TI - [Basic health care and the nurse. II: The nursing role]. PMID- 3853941 TI - [You know it's going to happen...]. PMID- 3853942 TI - The RNs surgical frontier. First assisting. PMID- 3853943 TI - OR orientation. Use a checklist to evaluate. PMID- 3853944 TI - Preventing pathology with cranial Z-plasty. PMID- 3853945 TI - Compression fixation. Hip fracture repair for the aged. PMID- 3853946 TI - Standards of care. Part 1--Definition. PMID- 3853948 TI - Surgery in Egypt. PMID- 3853947 TI - Program managerial success. PMID- 3853949 TI - Incongruence in nursing: education may not be meeting the needs of employers. PMID- 3853950 TI - Shaping nursing's image. PMID- 3853951 TI - Health care in the Soviet Union. PMID- 3853952 TI - Presidential address-AGM 1985. "Challenge and Opportunity". The opportunity of 1986. PMID- 3853953 TI - 40S subunit X Met-tRNAf complexes and initiation factor eIF-2 phosphorylation in mammalian cells accumulating uncharged tRNA. AB - A significant, reversible decline in the level of 40S subunit X Met-tRNAf complexes was observed in HeLa cells treated with either of two inhibitors of tRNA charging, histidinol or O-methylthreonine. A decline in 40S X subunit Met tRNAf complexes was also seen in HeLa cells deprived of histidine and in mutant Chinese hamster ovary cells, bearing a temperature-sensitive leucyl-tRNA charging enzyme, when they were incubated at a non-permissive temperature. Treatment with histidinol or O-methylthreonine did not affect the relative degree of phosphorylation of the alpha subunit of initiation factor eIF-2. Histidinol did not stimulate the activity of the endogenous kinase for eIF-2 alpha subunit in extracts prepared from HeLa cells. In the presence of histidinol the phosphorylation level of a 25000-dalton protein was reversibly increased. PMID- 3853954 TI - Tachibana trait: human high molecular weight kininogen deficiency with diminished levels of prekallikrein and low molecular weight kininogen. PMID- 3853955 TI - Neuroscience nursing practice. Process and outcome criteria for selected diagnoses. PMID- 3853956 TI - The scope of practice of the primary health care nurse practitioner. PMID- 3853957 TI - Issues in professional nursing practice. 7. Standards of nursing practice. PMID- 3853958 TI - Issue in professional nursing practice. 8. Pursuit of an educational base for professional nursing practice. PMID- 3853959 TI - Issue in professional nursing practice. 9. Challenges to nursing practice. PMID- 3853960 TI - Concentration of bronchoalveolar lavage fluid by ultrafiltration: evidence of differential protein loss and functional inactivation of proteinase inhibitors. AB - Bronchoalveolar lavage samples were concentrated using positive-pressure ultrafiltration. The starting material, concentrates, and eluates were assayed for immunoglobulin A (IgA), albumin (Alb), alpha 1-proteinase inhibitor (alpha 1 PI), antileukoprotease (ALP), and total leukocyte elastase inhibitory capacity (LEIC). No enzyme inhibitory capacity or protein was detected in membrane eluates, confirming the selectivity of the membrane used (Mr cutoff 2000 or 500). However, the concentrated lavages showed a generated loss of protein. The proportion of each protein recovered using the 500 Mr cutoff membrane was: IgA, 50.6% (+/- 15%); albumin, 43% (+/- 8.4); alpha 1-PI, 53.6 (+/- 17.3); ALP, 43% (+/- 2.1); and LEIC, 18.4% (+/- 2.6). Similar results were obtained with the 200 Mr cutoff membrane. The alpha 1-PI/Alb and the IgA/alb ratios were higher (2P less than 0.05) in the concentrates than in the starting material, suggesting differential protein loss. Protein losses were due to binding to the membrane since the wash with saline solution improved recoveries: IgA, 80%; Alb, 56%; alpha 1-PI, 64%; ALP, 66%; LEIC, 29%. Concentration of bronchoalveolar lavage fluids therefore resulted in substantial differential losses in elastase inhibitory capacity and protein concentrations, suggesting analysis of these fluids should be performed on unconcentrated samples. PMID- 3853961 TI - [Perifollicular elastolysis. Discussion of the role of secretory elastase from Staphylococcus epidermidis]. PMID- 3853962 TI - Transition from resistance to hypersusceptibility to beta-lactam antibiotics associated with loss of a low-affinity penicillin-binding protein in a Streptococcus faecium mutant highly resistant to penicillin. AB - Penicillin-binding protein (PBP) 5 of Streptococcus faecium has been shown to have a very low affinity for penicillin, and this PBP was suggested to be responsible for both the natural low susceptibility and high resistance to the antibiotic in this species (R. Fontana, R. Cerini, P. Longoni, A. Grossato, and P. Canepari, J. Bacteriol. 155:1343-1350, 1983). In this study, an S. faecium mutant (Rev 14) hypersusceptible to penicillin was derived from the highly resistant S. faecium R40 treated with novobiocin, and its properties were compared with those of the parent and S. faecium PS, a relatively susceptible strain from which R40 was isolated. The hypersusceptible strain did not synthesize PBP 5, but it did resemble the parent in cell morphology, growth rate, and autolytic activity. In addition, it was highly susceptible to other beta lactams but remained as susceptible as R40 and PS to antibiotics of a different mechanisms of action. The affinity of individual PBPs for the beta-lactams tested was the same in all the strains. This finding suggested that Rev 14 hypersusceptibility was due to the lack of PBP 5 and strongly supported the role of this protein in the mechanism of both natural low susceptibility and high level resistance to beta-lactams in S. faecium. PMID- 3853963 TI - In vitro activity of fosfomycin, alone and in combination, against methicillin resistant Staphylococcus aureus. AB - We tested 148 strains of clinical isolates of methicillin-resistant Staphylococcus aureus against fosfomycin alone and in combination with methicillin, cefamandole, gentamicin, trimethoprim, and vancomycin. Fosfomycin inhibited 90% of the 148 methicillin-resistant S. aureus strains at a concentration of 4 micrograms/ml. Synergism was observed in 97 strains (66%) with fosfomycin-cefamandole and in 69 strains (46%) with fosfomycin-methicillin. The combinations of fosfomycin with vancomycin, gentamicin, and trimethoprim were indifferent in most strains. PMID- 3853964 TI - Comparative in vitro activity of coumermycin against methicillin-resistant Staphylococcus aureus. AB - Coumermycin was the most active agent in vitro against methicillin-resistant Staphylococcus aureus when compared with fusidic acid, imipenem, rifampin, trimethoprim-sulfamethoxazole, and vancomycin. The MICs of coumermycin ranged from 0.002 to greater than 4 micrograms/ml and from 0.5 to greater than 4 micrograms/ml for inocula of 10(4) and 10(6) CFU/ml, respectively. The combination of coumermycin with either cephalothin or ciprofloxacin showed some synergy; antagonism was found with gentamicin. PMID- 3853965 TI - [Physiopathology of arterial hypertension. III. The kallikrein-kinins system, prostaglandins and electrolytes]. PMID- 3853966 TI - Purification and kinetic mechanism of lysyl-tRNA synthetase from Mycobacterium smegmatis SN2. AB - Lysyl-tRNA synthetase [L-lys:tRNAlys ligase (AMP forming) EC:6.1.1.6] has been purified to homogeneity from Mycobacterium smegmatis SN2. The enzyme is a dimer of molecular weight 126,000 and is composed of identical subunits. A detailed analysis of the kinetic mechanism of the lysyl-tRNA synthetase has been carried out. A rapid equilibrium random ter ter mechanism is proposed based on initial velocity and product inhibition studies. There is no evidence for the formation of enzyme-bound lysyl-adenylate. The reverse reaction, studied by the deacylation of lysyl-tRNA, requires the presence of both AMP and PPi. This observation is consistent with the mechanism proposed. PMID- 3853967 TI - [Effect on human complement of blastolysin and the glycopeptide (MDP and GMDP) and carbohydrate fragments of peptidoglycans]. AB - Along with complement activation by the classical pathway, blastolysin, an antitumor and adjuvant preparation of Lactobacillus bulgaricus peptidoglycans, effectively inhibits the transformation of C3 in to C5 convertase. Values of inhibition maximum and dissociation constants of the reversible C3b-acceptor complex for blastolysin and main immunological active structural moieties of peptidoglycans (GMDP, MDP) and their inactive carbohydrate components (N acetylglucosaminyl-N-acetylmuramic acid, N-acetylglucosamine, and N-acetylmuramic acid) have been determined. Immunostimulator concentrations for blastolysin, GMDP, and MDP in inhibition of the C5 convertase formation (C3b binding) correlate with their doses in vivo (animal blood), displaying antitumor activity. PMID- 3853968 TI - Estimating viral concentrations: a reliable computation method programmed on a pocket calculator. AB - A method has been developed, based on the Newton-Raphson iterative procedure, for calculating the concentration of viral suspensions from the dose-response data yielded by the cytopathic effect assays. The computation method provides the maximum likelihood estimate with its 95% approximated confidence limits, and determines the value of chi 2 for testing the goodness of the fit. A program for a Hewlett-Packard 41C calculator is presented which is suitable to most experimental situations. PMID- 3853969 TI - Real-time analysis of sperm motion using automatic video image digitization. AB - A methodology is described for automatic, real-time analysis of sperm movement characteristics. Video micrographic images of spermatozoa are digitized, compressed, and then analyzed using a Motion Analysis Corporation Expert Vision system. The system includes a VP-100 video processor, a video camera, and a Sun 2/120 minicomputer. Algorithms for detection of and discrimination among sperm are described, and desirable operating characteristics of the system are considered. Salient parameters which characterize the kinematics of sperm swimming trajectories are discussed. PMID- 3853970 TI - Software for bone histomorphometry by means of a digitizer. AB - A set of programs is described by which a consistent morphometry of bone sections can be performed. The programs are written in FORTRAN IV in a PDP 11/10 minicomputer, under the RT-11 operating system. The bone sections are run through the field of vision of the microscope using a scanning stage in one of several preselected courses at a magnification suitable for the parameters that are being put in. When input is completed, a print-out is produced with measured and derived parameters, personal data (protected by a code) and a comment file, all of which are stored for later retrieval and statistical evaluation. The programs were developed to be used in a system in which the bone sections are projected (by a projection microscope) onto a digitizer connected to the computer. PMID- 3853971 TI - A microcomputer-based program for video analysis of chemotaxis under agarose. AB - We have developed a computerized system for the quantification of video images of cell migration patterns obtained in the chemotaxis under agarose assay. This system allows either manual or automatic measurement of standard parameters of chemotaxis, as well as quantification of three new parameters which reflect mean cell movement and chemokinesis. The parameters of mean cell population movement are not obtainable by the traditional analysis of the chemotaxis under agarose assay. Our system operates on an inexpensive microcomputer, is easy to use and provides data output in a format that is directly transferable to standard statistical packages. PMID- 3853972 TI - Microcomputer program for the design of digital filters. AB - The program presented here is intended to be a design device and learning tool for digital filters. Digital filters designed with the program can be implemented by incorporation within the data analysis programs of the user. The program is written in BASIC for use with the IBM-PC, is intended to be user-friendly, and includes a great deal of filter assistance not found in other programs. An example of program use shows how one filter can be used to remove noise from respiratory waveform data. PMID- 3853973 TI - Computerized acoustic detection of obstructive apnea. AB - Cardiac, respiratory and neurologic abnormalities have been identified as causes of Sudden Infant Death Syndrome (SIDS). Recurrent central apnea (no respiratory effort or nasal/oral airflow) and obstructive apnea (respiratory effort without concurrent nasal/oral airflow) in infants are considered risk factors for SIDS. However, using currently available monitoring techniques, normal activities such as yawns, stretches and swallows cannot be distinquished from short obstructive episodes lasting less than 20 s. A system was developed to more accurately detect obstructive apnea in infants using a miniature microphone placed over the trachea, a cassette tape recorder and a MINC-11 microcomputer. Respiratory sounds were recorded on 5 anesthesized rabbits in which partial and total airway obstruction was artificially induced. Sounds were analyzed by computer using fast Fourier transformations. Amplitude versus frequency was plotted for normal breathing, partial obstruction and total obstruction. Characteristic patterns were identified for each episode demonstrating that acoustic detection of apnea in infants by a microprocessor-based monitor is feasible. PMID- 3853974 TI - A program for machine learning of counting criteria: empirical induction of logic based classification rules. AB - A program has been developed which derives classification rules from empirical observations and expresses these rules in a knowledge representation format called 'counting criteria'. Decision rules derived in this format are often more comprehensible than rules derived by existing machine learning programs such as AQ11. Use of the program is illustrated by the inference of discrimination criteria for certain types of bacteria based upon their biochemical characteristics. The program may be useful for the conceptual analysis of data and for the automatic generation of prototype knowledge bases for expert systems. PMID- 3853975 TI - Human kidney kallikrein: cDNA cloning and sequence analysis. AB - The primary structure of human kidney kallikrein has been elucidated by molecular cloning and cDNA sequence analysis. Structural homology between mammalian glandular kallikreins permitted the isolation of several clones from a human kidney cDNA library where kallikrein sequences represented approximately 0.01% of the cDNA. Identity of the cloned sequence with the published amino-terminal sequence of human urinary kallikrein strongly implicates the kidney as a major source of this protein. The overall structure of the kidney enzyme is 67% homologous to that of the corresponding mouse kidney kallikrein and only 60-62% homologous to the other published mouse kallikrein sequences. Homology to the pancreatic kallikreins of pig and rat is 67% and 61%, respectively. As expected, the amino acids required for catalytic activity are conserved as is the Asp residue required for the kallikrein-type specificity. Southern blot analysis demonstrates the presence of a number of related sequences in human DNA, although these do not appear to be as numerous as those in the mouse genome. Several polymorphisms in the kallikrein genes were observed. PMID- 3853977 TI - How adults learn and change. PMID- 3853976 TI - Acquiring expertise. PMID- 3853978 TI - Medical knowledge from the perspective of the patient: the importance of learning to learn. PMID- 3853979 TI - Clinical assessment: a state-of-the-art review. PMID- 3853980 TI - Evaluating teaching skills. PMID- 3853981 TI - Awarding the gold star: a primer on certification examinations. PMID- 3853982 TI - Legal implications of being an expert. PMID- 3853983 TI - Differences between novices and experts. PMID- 3853985 TI - [Bone tumors]. PMID- 3853984 TI - Comparison of fosfomycin and vancomycin therapy for experimental endocarditis due to methicillin-resistant Staphylococcus epidermidis. PMID- 3853987 TI - [Injuries to the eyes of workers in agriculture]. PMID- 3853986 TI - [Effect of alcohol on the cardiovascular system]. PMID- 3853988 TI - [High intestinal obstruction in the area of the duodenojejunal flexure]. PMID- 3853989 TI - [Shereshevskii-Turner syndrome]. PMID- 3853990 TI - [Soviet public health at the International Public Health-85 Exhibit]. PMID- 3853991 TI - [Diuretic agents]. PMID- 3853992 TI - [Knowledge of the population about the prevention of venereal diseases]. PMID- 3853993 TI - [Chronic gestational pyelonephritis complicated by nephropathy]. PMID- 3853995 TI - [Uterine myoma]. PMID- 3853994 TI - [Stenocardia simulating pneumonia]. PMID- 3853996 TI - [Diseases of the eyelids and conjunctiva]. PMID- 3853997 TI - [Technical note: transcutaneous liver puncture]. PMID- 3853998 TI - [Contact lenses and artificial crystalline lenses]. PMID- 3853999 TI - [Surviving an infarct--an utopia?]. PMID- 3854000 TI - [The same, yet different]. PMID- 3854001 TI - [3 months in Ethiopia]. PMID- 3854002 TI - [Nursing diagnosis: why should one be interested?]. PMID- 3854003 TI - [You and digoxin]. PMID- 3854004 TI - [Clinical education in a family care center on a master's level]. PMID- 3854005 TI - [Preventive measures in suicidal young adults]. PMID- 3854006 TI - Stress and anxiety. PMID- 3854007 TI - Social status and responsibility for stressful life events. PMID- 3854008 TI - A genetic model of anxiety. PMID- 3854009 TI - A cognitive model of anxiety: implications for theories of personality and motivation. PMID- 3854010 TI - Traditions of stress research: integrative comments. PMID- 3854011 TI - Worry, fear, and concern differentiated. PMID- 3854012 TI - Anxiety, arousal, and the self-concept. PMID- 3854013 TI - On stress and coping mechanisms. PMID- 3854014 TI - The nature of clinical anxiety in modern society. PMID- 3854015 TI - False alarms: their effects on fear and adjustment. PMID- 3854016 TI - A cognitive model of anxiety formation and anxiety resolution. PMID- 3854017 TI - A congruence analysis of human stress. PMID- 3854018 TI - Life stress events and State-Trait Anxiety in psychiatric and psychosomatic patients. PMID- 3854019 TI - The psychology of stress and coping. PMID- 3854020 TI - Stress inoculation: a preventative approach. PMID- 3854021 TI - Anxiety, pain, and coping. PMID- 3854022 TI - Coping patterns among patients with life-threatening diseases. PMID- 3854023 TI - Cognitive processes as determinants of environmental stress. PMID- 3854024 TI - Stressful levels of environmental stimulation. PMID- 3854025 TI - Implications of the human-animal companion bond in the community. PMID- 3854026 TI - Hug a puppy and call me in the morning. PMID- 3854027 TI - Brandy: an incentive to recover. PMID- 3854028 TI - Chemical dependence: its effect on breast milk and on the newborn. PMID- 3854029 TI - Potential health hazards discovered at a day care center. PMID- 3854030 TI - The use of volunteers in a home health agency. PMID- 3854031 TI - Hand puppets and home health care. PMID- 3854032 TI - Information needs of the pregnant adolescent. PMID- 3854033 TI - Steps you can take to help change detrimental regulations. PMID- 3854034 TI - Documenting patient care in the home--legal issues for the home health nurse (Part II). PMID- 3854035 TI - Hospice care: unscrambling oncologic acronyms. PMID- 3854037 TI - Childhood and death. PMID- 3854036 TI - The young child and the home health care nurse: problems, challenges, and intervention strategies. PMID- 3854038 TI - Helping parents cope. A model home-care program for the dying child. PMID- 3854039 TI - Helping siblings and other peers cope with dying. PMID- 3854040 TI - Staff stress in the care of the critically ill and dying child. PMID- 3854041 TI - Children's patterns in mourning the death of a loved one. PMID- 3854042 TI - Helping families. Thoughts of a pediatrician. PMID- 3854043 TI - Helping adults mourn the death of a child. PMID- 3854044 TI - Stillbirth, neonatal death, and sudden infant death syndrome. PMID- 3854045 TI - Fears and anxieties about death. PMID- 3854046 TI - Death preoccupations and suicidal behavior in children. PMID- 3854047 TI - Youth suicide. PMID- 3854048 TI - Death education in the home. Parents talk with their children. PMID- 3854049 TI - Concepts of death. A developmental perspective. PMID- 3854050 TI - Death education in the schools for older children. PMID- 3854051 TI - Dying children. Patterns of coping. PMID- 3854052 TI - The pediatrician and the dying child. PMID- 3854053 TI - Helping the dying child. Practical approaches for nonphysicians. PMID- 3854054 TI - Aminoacyl-tRNA exclusively in the 3'-isomeric form is bound to polypeptide chain elongation factor Tu. AB - 2' and 3'-O-(N-acetyl-L-phenylalanyl)adenosine (Ac-Phe-Ado) were chemically synthesized. These two isomers were clearly separated from each other by high performance liquid chromatography (HPLC). From the two isomers of [3H]Phe-tRNA in equilibrium, Ac-[3H]Phe-Ado was prepared, without any change in the 2'/3'-isomer ratio, by acetylation of the phenylalanyl residue with acetic anhydride followed by digestion with pancreatic RNase A. By HPLC analysis of this preparation of Ac [3H]Phe-Ado, the abundance ratio of the 2'-isomer and the 3'-isomer of [3H]Phe tRNA was found to be 0.20:0.80. Further, [3H]Phe-tRNA was bound to Escherichia coli polypeptide chain elongation factor Tu (EF-Tu) with the ligand of GTP or guanosine 5'-[beta, gamma-imido]triphosphate (GMP-P(NH)P). The ternary complex was treated with phenol and acetic anhydride, and then digested with pancreatic RNase A. By HPLC analysis of Ac-[3H]Phe-Ado, the abundance ratio of the 2'-isomer and the 3'-isomer of [3H]Phe-tRNA was determined to be 0.07:0.93 in the complex with EF-Tu.GTP and 0.04:0.96 in the complex with EF-Tu.GMP-P(NH)P. These results clearly indicate that the 3'-isomer, rather than the 2'-isomer, of aminoacyl-tRNA is exclusively involved in the ternary complex. PMID- 3854055 TI - Radiofrequency radiation exposure limits in Eastern Europe. AB - Eastern European standards on radiofrequency radiation (RFR) exposure limits (EL) are reviewed. These standards are mandatory. Additional standards specify requirements for equipment and methods for RFR measurements to determine compliance. The standards are based on USSR ELs with the exception of Poland and Czechoslovakia, where different approaches to exposure limitation were used. According to informal private communications, a new joint recommendation on RFR ELs for all countries belonging to the Council of Mutual Economic Cooperation (COMECON) is being developed. As far as can be judged from recent USSR publications, the new recommendations will establish ELs at levels comparable to those indicated in the international guidelines developed by the International Non-Ionizing Radiation Committee of the International Radiation Protection Association (INIRC/IRPA). PMID- 3854056 TI - Application of a finite-difference technique to the human radiofrequency dosimetry problem. AB - A powerful finite-difference numerical technique has been applied to the human radiofrequency dosimetry problem. The method possesses inherent advantages over the method-of-moments approach in that its implementation requires much less computer memory. Consequently, it has the capability to calculate specific absorption rates (SARs) at higher frequencies and provides greater spatial resolution. The method is illustrated by the calculation of the time-domain and frequency-domain SAR responses at selected locations in the chest. The model for the human body is comprised of rectangular cells with dimensions of 4X4X6 cm and dielectric properties that simulate average tissue (2/3 muscle). Additionally, the upper torso (chest) is configured by both homogeneous and inhomogeneous models in which this region is subdivided into 20,736 cells with dimensions of 1X1X1 cm. The homogeneous model of the chest consists of cells with average tissue properties, and the calculated results are compared with measurements acquired from a homogeneous phantom model when the exposure frequency is 350 MHz. For the inhomogeneous chest model the lungs and surrounding region (ribs, spine, sternum, fat, and muscle) are modeled with as much spatial resolution as allowed by the 1X1X1 cm cells. Computed results from the inhomogeneous chest model are compared with the homogeneous model. PMID- 3854057 TI - The effect of sodium and potassium loading on urinary kallikrein-like activity in young patients with borderline hypertension. AB - We studied the effects of a potassium supplement on urinary kallikrein excretion in a setting of high sodium intake after sodium deprivation with diuretics in young patients with borderline hypertension. Eleven patients, who took the potassium supplementation during the high sodium diet period, showed lower increments in mean blood pressure with salt loading than 12 patients without the potassium supplementation. In the non-potassium-supplemented patients, urinary kallikrein was increased significantly when plasma renin activity (PRA), plasma aldosterone concentration (PAC), and urinary aldosterone were increased during the diuretic treatment. It was decreased significantly when the other hormones were decreased during the sodium load. During the high sodium diet period, PRA, PAC and urinary aldosterone were greater in the potassium-supplemented patients than in the non-potassium-supplemented ones, but urinary kallikrein excretion was not higher when potassium was supplemented. Thus, the present results did not support the theory that the kallikrein-kinin system may be involved in the natriuretic and antihypertensive effects of potassium. In addition, these finding suggest that some kallikrein-modulating factor(s) may counteract the increased urinary kallikrein excretion with the augmented renin-angiotensin-aldosterone system during salt loading with potassium supplementation. PMID- 3854059 TI - [Primary nursing: advantages and disadvantages to nurses]. PMID- 3854058 TI - [Studies on granulocyte elastase in plasma. (II) Plasma granulocyte-elastase levels in patients with surgical diseases]. PMID- 3854060 TI - [Terminal care (1): Chaos brought about by the progress of modern medical technology]. PMID- 3854061 TI - [Approaches to the home nursing instruction project at Koto Ward, Tokyo, and its current status]. PMID- 3854062 TI - [A home nursing project at Koto Ward, Tokyo: a responsible member of the regional health service, a view of a practicing physician]. PMID- 3854063 TI - [A home nursing project at Koto Ward: a suggestion on an intermediate facility, an opinion by a practitioner]. PMID- 3854065 TI - [A home nursing project at Koto Ward: on the role of nurses in home nursing of patients with refractory diseases being cared for at home]. PMID- 3854066 TI - [A home nursing project at Koto Ward: difficulties and satisfaction in regional nursing. A thought on nursing through regional nursing activities]. PMID- 3854064 TI - [A home nursing project at Koto Ward: on rehabilitation at home with special reference to the improvement of the nursing environment]. PMID- 3854067 TI - [A home nursing project at Koto Ward: the fundamentals of nursing learned from experiences in home nursing]. PMID- 3854068 TI - [A home nursing project at Koto Ward. Comprehensive care based on the area: an attempt by Komatsu Hospital for incorporation of health care, medical care, and welfare]. PMID- 3854069 TI - [The role of nurses at the open-system hospital and coordination with regional facilities]. PMID- 3854070 TI - [Use of old folk tales in a therapeutic approach to aged demented patients]. PMID- 3854071 TI - [A monologue by a nursing director: importance of the nursing profession to be noted by the public]. PMID- 3854072 TI - [Report from a hospice. 10. Care of dying patients. Family ties and sorrow of parting]. PMID- 3854074 TI - [Counseling of patients. 9. Actual scene of counseling: methods of counseling]. PMID- 3854073 TI - [Clinical description of dementia. 6. Symptoms of dementia. 5]. PMID- 3854075 TI - [Profile of a nurse: Ms. Hideko Nakazawa, a nursing student with a college degree in sociology]. PMID- 3854076 TI - [Diary of a cancer patient. Positive attitude in spite of loss of voice. 10. Patients in the ward]. PMID- 3854077 TI - [Experience as a public health nurse in Indonesia. 10. Experience as an inpatient]. PMID- 3854078 TI - [Microsurgical tuboplasty. An interview with Professor Akikazu Fujii of Tokai University Medical School]. PMID- 3854080 TI - [Orientation at admission or discharge: use of a check-list is not enough]. PMID- 3854079 TI - [Planning at our hospital for the introduction of primary nursing]. PMID- 3854082 TI - [For a peaceful death--nursing to support the mental state of the patient]. PMID- 3854084 TI - [Reevaluation of daily nursing. Allocation of patients: maximization of freedom in a restricted environment]. PMID- 3854081 TI - [Habit diseases]. PMID- 3854083 TI - [Reevaluation of daily care: a new start in nursing practice]. PMID- 3854085 TI - [Reevaluation of daily care. Nursing judgment: a need to be a thinking nurse]. PMID- 3854086 TI - [Assistance at discharge from the hospital: effective patient instruction created by the active attitude of nurses]. PMID- 3854087 TI - [Reevaluation of daily care. An ideal image of a head nurse]. PMID- 3854088 TI - [Reevaluation of daily care. Assistance extended to families: understanding of family relations]. PMID- 3854089 TI - [Difficulty in communication encountered in misunderstanding in postoperative patient education]. PMID- 3854090 TI - [Better communication methods discovered in process records]. PMID- 3854092 TI - [Oral care of patients with intratracheal intubation]. PMID- 3854091 TI - [Interactions with a patient who refuses the assistance by nurses]. PMID- 3854093 TI - [Report from a hospice. 12. Care of dying patients. Overview of hospices in the future]. PMID- 3854094 TI - [A monologue by a nursing director: best and natural efforts as a new nursing director]. PMID- 3854095 TI - [Discovery of the meaning of pain]. PMID- 3854096 TI - [Clinical aspects of dementia. 8. Symptoms of dementia. (7)]. PMID- 3854097 TI - [Counseling of patients. 11. Empathy in dealing: the basic attitude required in counseling]. PMID- 3854098 TI - [Profile of a nurse: Ms. Sugako Nishijima, a telephone counselor on cancer]. PMID- 3854099 TI - [Diary of a cancer patient. A positive attitude in spite of loss of voice. 12. Homecoming]. PMID- 3854100 TI - [Experience as a public health nurse in Indonesia. 12. Recommendation for overseas volunteer work]. PMID- 3854101 TI - [Symptoms and etiology of airway obstruction]. PMID- 3854102 TI - [Intratracheal intubation and patient care]. PMID- 3854104 TI - [Keypoints in prevention of airway obstruction following surgery (care in the recovery room)]. PMID- 3854103 TI - [Indication for tracheotomy and keypoints in patient care]. PMID- 3854105 TI - [Keypoints in the observation and recording of patients' conditions for the prevention of airway obstruction]. PMID- 3854106 TI - [Prevention of accidents with intratracheal intubation]. PMID- 3854107 TI - [Protection of the wound created by tracheotomy and prevention of its infection]. PMID- 3854108 TI - [On communication technics for cannulated patients--response to patients' demands in relation to the treatment and life activities]. PMID- 3854109 TI - [Intratracheal intubation and continued care of patients with cognition disorders]. PMID- 3854110 TI - [Intratracheal intubation and continued care of patients with airway burns]. PMID- 3854111 TI - [Intratracheal intubation and continued care of a patient with acute poisoning]. PMID- 3854112 TI - [Respiratory care of a patient with severe pulmonary contusion--suction for the prevention of complications]. PMID- 3854113 TI - [Nursing associated with tracheotomy and respiratory care of a patient with amyotrophic lateral sclerosis]. PMID- 3854114 TI - [Intratracheal intubation and continued care of a child with congenital tracheal stenosis]. PMID- 3854115 TI - [Survey on former inpatients who have been subjected to radiotherapy--with special reference to nursing of patients without families]. PMID- 3854117 TI - [Application of lasers to clinical medicine--current topics]. PMID- 3854116 TI - [Fetal sex determination using DNA]. PMID- 3854119 TI - [Practice of nursing during puerperium]. PMID- 3854118 TI - [Early diagnosis and management of abnormalities and contraception during the puerperal period]. PMID- 3854120 TI - [Apprehension of patients with uterine cancer and their observation]. PMID- 3854121 TI - [Urinary stoma care (12). Uretero-sigmoidostomy and its management]. PMID- 3854122 TI - [Process of nursing concept formation by nursing students]. PMID- 3854123 TI - [Status and future problems of public health nursing education: relationship with basic nursing education]. PMID- 3854124 TI - [Progress by the Congress of National Organizations of Public Health Nursing Education]. PMID- 3854125 TI - [Status and analysis of the development in public health nursing education theory in the training of public health nursing]. PMID- 3854126 TI - [On the national examination for public health nurses]. PMID- 3854127 TI - [Trends in public health nursing education based on the activities of the graduates]. PMID- 3854128 TI - [Goal in clinical training of public health nurses]. PMID- 3854129 TI - [Introduction of group instruction on patient discharge in clinical training of obstetrical nursing]. PMID- 3854130 TI - [Basic training in the giving of injections]. PMID- 3854131 TI - [Structure and organization of education and learning. 6. Management and administration of schools]. PMID- 3854132 TI - [Case study with a meaningful dialogue with the case. 1. Self development through studying home teaching. "Two in one" unification of the reader and the author]. PMID- 3854133 TI - [Case study with a meaningful dialogue with the case. 2. Learning by a member of the study group. A learning experience by a member who provided the case material]. PMID- 3854134 TI - [Case study with a meaningful dialogue with the case. 2. Learning by a member of the study group. Impressions by a member who participated in the seminar on primary health care (PHC) following the study]. PMID- 3854135 TI - [Case study with a meaningful dialogue with the case. 2. Learning by a member of the study group. Learning experience and impressions of the study]. PMID- 3854136 TI - [Case study with a meaningful dialogue with the case. 2. Learning by a member of the study group. Discussion: the fruit of the study on home instructions]. PMID- 3854137 TI - [Case study with a meaningful dialogue with the case. 2. Learning by a member of the study group. Recognition of changes in one's own attitude--an experience at a meeting 6 months after the study]. PMID- 3854138 TI - [Case study with a meaningful dialogue with the case. 3. Study of home teaching as a research topic]. PMID- 3854139 TI - [Case study with a meaningful dialogue with the case. 3. Study of home teaching as a research topic. Outline of the study on home teaching]. PMID- 3854140 TI - [From reevaluation to estimation in public health activities. Total care closely related to cases]. PMID- 3854141 TI - [Case study with a meaningful dialogue with the case. 1. Self development through studying home teaching. Unification of research, practice and learning]. PMID- 3854142 TI - [Case study with a meaningful dialogue with the case. 1. Self development through studying home teaching. "Two in one" developing from research activities]. PMID- 3854143 TI - [Case study with a meaningful dialogue with the case. 1. Self development through studying home teaching. Studying and my process of self development and unification (two in one)--an experience as a planning member of the study]. PMID- 3854144 TI - [Case study with a meaningful dialogue with the case. 1. Self development through studying home teaching. Crucifix as a conceptual model]. PMID- 3854145 TI - Effects of vanadate on contractions of SHRSP mesenteric arteries induced by field stimulations. PMID- 3854146 TI - School-age children's conceptions of the heart and its function. Part II: Methodology and findings. PMID- 3854147 TI - [Rheumatoid arthritis]. PMID- 3854149 TI - [Ultrasonic therapy]. PMID- 3854148 TI - [Physioprophylaxis of respiratory diseases in children]. PMID- 3854150 TI - [Physiotherapy of chronic inflammatory diseases of the bronchi and lungs in children]. PMID- 3854151 TI - [Methods of UHF and SHF therapy]. PMID- 3854152 TI - [Pneumonia in elderly people]. PMID- 3854153 TI - [Vacuum electrophoresis in dentistry]. PMID- 3854155 TI - [Current requirements for drug storage]. PMID- 3854154 TI - [Role of the nurse in carrying out the method of treatment in convergent strabismus--diploptics]. PMID- 3854156 TI - [Drawing up the drug orders]. PMID- 3854157 TI - [Care of urology patients]. PMID- 3854158 TI - [Duties of the medical workers in bus transportation enterprises]. PMID- 3854159 TI - [Operational safety of xeroradiographic units]. PMID- 3854160 TI - Child abuse. PMID- 3854161 TI - Multiple births--women's needs. PMID- 3854162 TI - Overpopulation. PMID- 3854163 TI - Is shock the mode of death in SIDS? AB - Sequential morphological changes as found in the organs of 179 SIDS infants are described. Detailed examination of macroscopic and microscopic heart lesions reveal extensive myocardial lesions which can be best described as selective focal anoxic muscle fibre necrosis at different developmental stages. Varying from case to case the myocardial lesions present themselves in an acute and subacute phases, and in most cases both phases are present at the same time. These lesions are shown to be identical with the myocardial lesions as encountered in shock and many other conditions observed in clinical cases and in experimental laboratory animals. Lesions in other organs are consistent with the effects due to cardiogenic shock. A conclusion is reached that cardiogenic shock leading to acute cardiac failure is the primary final cause of death in all SIDS infants. PMID- 3854164 TI - In search of a physiological function for L-ergothioneine. AB - Since its discovery at the turn of the century, attempts to define a physiological function for L-ergothioneine have been unsuccessful. This paper suggests several possible functions for this enigmatic compound or its metabolites. These include: transport of cations or carbon dioxide, catalysis of carboxylation or decarboxylation reactions, mediation of thyroid or antithyroid function, histaminic or antihistaminic action, and cholinergic or anticholinergic action. PMID- 3854165 TI - Are rheumatoid arthritis and systemic lupus erythematosus inversely related diseases? AB - Although rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) have certain features in common, the literature suggests that the two diseases are inversely related to each other in at least eight major respects, viz., age of onset in relation to reproductive fertility; psychosis; kidney disease; nutritional status; and the differential effects of pregnancy, oral contraceptive use, jaundice, and penicillamine. It is suggested that associated with RA and SLE are differing blood and/or tissue levels of a common but as yet undetermined factor: deficient levels in RA, toxic levels in SLE. PMID- 3854167 TI - Apoptosis, lymphocytotoxicity and the containment of viral infections. AB - It is generally agreed that cellular immunity plays an important role in limiting certain primary viral infections. Morphological studies indicate that cell death induced by T cells, K cells and NK cells takes the form of apoptosis, not classical necrosis. Killing of a virus-infected cell by either of these means prior to the assembly of infectious virus would clearly contain the infection. Our hypothesis is that the exclusive involvement of apoptosis in lymphocytotoxicity may have additional advantages in preventing virus dissemination. Firstly, a very early event in apoptosis is activation of endogenous, non-lysosomal endonuclease, and this might destroy virus. Secondly, apoptosis results in the formation of membrane-bounded cell fragments, which are phagocytosed intact and digested within the lysosomes of adjacent cells. In contrast, necrosis is characteristically associated with rupture of the cell membrane and release of cellular contents; its induction by non-budding viruses aids in spread of the infection. PMID- 3854166 TI - Systemic lupus erythematosus, renal disease, hemodialysis and vitamin A. AB - Recent studies indicate that clinically-active systemic lupus erythematosus (SLE) is uncommon in patients with end-stage renal disease undergoing long-term hemodialysis. Several lines of indirect evidence suggest that the dialysis procedure itself may be responsible for inducing remission; that SLE could reflect a toxicity reaction to excessive tissue levels of vitamin A; and that remission associated with dialysis may be due to a gradual reduction in vitamin A levels at the sites of SLE activity. PMID- 3854168 TI - The frequency distributions of biochemical variables: Gaussian or log-Gaussian? AB - Serum sodium and total calcium concentrations were measured in 677 apparently healthy Caucasian men aged 30-39 years. The frequency distributions of these variables could be described equally satisfactorily as either Gaussian or log Gaussian. Since other biochemical variables (for example, serum bilirubin and alkaline phosphatase) have frequency distributions which are much better described as log-Gaussian, the unifying hypothesis is proposed that all biochemical variables have basically log-Gaussian distributions, and that the apparently Gaussian distributions of certain variables (such as sodium and calcium) arise because of the relatively narrow ranges of values encountered in the healthy population. PMID- 3854169 TI - Could supplementary dietary tryptophan and taurine prevent epileptic seizures? AB - Roles for melatonin, taurine, and the pineal gland in epilepsy are examined. Cerebrospinal fluid melatonin and taurine may be natural anticonvulsants. The flow of cerebrospinal fluid may bathe the medial and lateral geniculate ganglia and the superior and inferior colliculli with these anticonvulsant substances. Supplemental dietary taurine and tryptophan could be of value in the treatment and prevention of seizures. PMID- 3854170 TI - Mechanisms of tissue damage resulting from the use of oral water irrigation devices. AB - Oral water irrigation devices (WIDs) are widely used for oral physiotherapy in homes and dental clinics throughout the world. A major area of concern in the use of WIDs has been the possibility of injury to the sulcular epithelium and underlying tissue. There are several documented clinical cases of tissue injury with the use of WIDs. The existing WIDs exert excessive pressures on the sulcular epithelium. Although it is known that the high jet impact pressures exerted by the WIDs cause the tissue damage, the underlying damage mechanisms are poorly understood. The damage to the sulcular epithelium and underlying tissue is mediated through several physiological and micromechanical processes and includes, among others, the following damage mechanisms: pressure-induced, diffusion-mediated, deposition of bacteria and toxins into the underlying tissue, damage to the collagen network integrity in the tissue, damage to the blood and lymphatic microcirculation, especially damage to the anchoring filaments attached to the terminal lymphatic wall, and direct mechanical damage due to abnormal shear forces induced by the jet. All these damage processes could lead to tissue necrosis. PMID- 3854171 TI - The advancement of nursing practice and related theory. PMID- 3854172 TI - Pain: a decade of nursing. PMID- 3854174 TI - Whom do you care for? PMID- 3854173 TI - Nursing assessment of the cancer patient who has protracted pain. PMID- 3854175 TI - What about the carers? PMID- 3854176 TI - Conflict or co-operation?--an overview. New nurses: new boundaries. PMID- 3854177 TI - Professional development--is it your business? PMID- 3854178 TI - Shaping the future pattern of Community Nursing Services (Mental Health). PMID- 3854179 TI - Team nursing. PMID- 3854180 TI - [Interrelation of the kallikrein-kinin and fibrinolytic systems in the pathogenesis of acute arterial obstruction]. PMID- 3854181 TI - [Effect of progesterone on experimental pulmonary emphysema]. PMID- 3854182 TI - [Cryosurgery in urology]. PMID- 3854183 TI - [Infant feeding]. PMID- 3854184 TI - [Pupil and teacher]. PMID- 3854185 TI - [A healthy youth means an auspicious tomorrow]. PMID- 3854186 TI - [Social adaptation of patients after strokes]. PMID- 3854187 TI - [We must give ourselves gladly. Interview by Iwona Krysiak]. PMID- 3854188 TI - [Far from home. Interview by Halina Bykowska]. PMID- 3854189 TI - [Malignant neoplasms of the vulva and vagina]. PMID- 3854190 TI - [That they may be good]. PMID- 3854191 TI - [Self-instruction]. PMID- 3854192 TI - [Ocular changes in toxoplasmosis]. PMID- 3854193 TI - [Oxyuriasis]. PMID- 3854194 TI - [Managerial personnel]. PMID- 3854195 TI - [The hospitalized child]. PMID- 3854196 TI - [Anemia and nutrition]. PMID- 3854197 TI - [Children with respiratory system diseases]. PMID- 3854198 TI - [So the work might the easier]. PMID- 3854199 TI - [Tuberculosis--the scale of the problem]. PMID- 3854200 TI - [Those who have won the red diploma]. PMID- 3854201 TI - [Joint success]. PMID- 3854203 TI - [Canadian Nurses' Association]. PMID- 3854202 TI - [Thank you my dear]. PMID- 3854204 TI - [Perinatal care]. PMID- 3854205 TI - [Responsibility]. PMID- 3854206 TI - [Assessment of the professional attitude]. PMID- 3854207 TI - [Rational psychotherapy]. PMID- 3854208 TI - [The 1st menses]. PMID- 3854209 TI - [Diseases of the circulatory system in infants]. PMID- 3854210 TI - [So that the work might be easier]. PMID- 3854211 TI - [Genetic and immunological aspects of peptic ulcer]. PMID- 3854212 TI - [Psychosocial problems of nursing care]. PMID- 3854213 TI - [An expression of appreciation. Interview by Iwona Krysiak]. PMID- 3854214 TI - [Under rather difficult conditions]. PMID- 3854215 TI - [Tuberculosis--etiology and diagnosis]. PMID- 3854216 TI - [Health and social care in Canada]. PMID- 3854217 TI - [Effect of drugs on the fetus]. PMID- 3854219 TI - [Control of work]. PMID- 3854218 TI - [Supervision over the school. Interview by Maria Lesnikowska]. PMID- 3854220 TI - [Home school of childbirth]. PMID- 3854221 TI - [Study of scientific knowledge in the introduction and fundamentals of nursing]. PMID- 3854222 TI - [Activities of nurses in supply centers and their expectations regarding teaching of nursing at the graduate level in these areas]. PMID- 3854223 TI - [Preventive procedures developed by nurses to avoid cross infections]. PMID- 3854224 TI - [Nursing and humanization of patients]. PMID- 3854225 TI - [Brazilian women's territory and Brazilian nurses' territory]. PMID- 3854226 TI - [General ideas on a systems approach to nurses' learning activities]. PMID- 3854227 TI - [Why do we institutionalize our aged?]. PMID- 3854228 TI - [Motivation in nursing education and care]. PMID- 3854229 TI - [Conceptual framework for teaching and research in basic nursing--a viewpoint]. PMID- 3854230 TI - [Professional qualifications in the nursing field]. PMID- 3854231 TI - [Teachers' responsibility in the education of medium-level personnel]. PMID- 3854232 TI - Acute complications of cancer. PMID- 3854233 TI - Assessment of the acutely ill cancer patient. PMID- 3854234 TI - Disseminated intravascular coagulopathy and nursing implications. PMID- 3854235 TI - Complications of the myeloproliferative system: infection and sepsis. PMID- 3854236 TI - Ectopic hormonal production: nursing implications. PMID- 3854237 TI - Malignant effusions and their management. PMID- 3854238 TI - Acute pulmonary disorders associated with cancer. PMID- 3854239 TI - Neurologic emergencies in oncology. PMID- 3854241 TI - Family coping: helping families help themselves. PMID- 3854240 TI - The prevention and treatment of immediate hypersensitivity reactions from cancer chemotherapy. PMID- 3854242 TI - Future nursing considerations for the acutely ill cancer patient. PMID- 3854243 TI - [Protectors of the gastric mucosa and antacids]. PMID- 3854244 TI - [Alcoholic polyneuritis]. PMID- 3854245 TI - [Cauda equina syndromes]. PMID- 3854246 TI - [Iatrogenic peripheral neuropathy]. PMID- 3854247 TI - [Anatomy and physiology of nerve fibers]. PMID- 3854248 TI - [A patient with diabetic neuropathy. Case report]. PMID- 3854249 TI - [Family allowances (3)]. PMID- 3854250 TI - [Professional documentation. Contribution to the quality of nursing care]. PMID- 3854251 TI - [The nurse's equilibrium in the hospital setting]. PMID- 3854252 TI - [Current syphilis is no myth]. PMID- 3854253 TI - [Droleptan]. PMID- 3854255 TI - [Care of the body and psychosis]. PMID- 3854254 TI - [Biofeedback]. PMID- 3854256 TI - [Tattooing in the psychopathic patient. The parchment body]. PMID- 3854257 TI - [Psychotherapeutic relaxation technics. "The future in question"]. PMID- 3854258 TI - [J.H. Schultz' autogenic training. A relaxation method using concentrated auto decontraction]. PMID- 3854259 TI - [Education. Library conditions in nursing schools should be completely evaluated]. PMID- 3854260 TI - [ICN Congress expression of unique professional solidarity]. PMID- 3854261 TI - [ICN needs analyzed by individual organizations]. PMID- 3854262 TI - [Institution and society. Change-over process from active hospital to geriatric center]. PMID- 3854263 TI - [Work environment. Principle on instruction established. Interview by Jesper Jespersen]. PMID- 3854264 TI - [Physicians' criticism of occupational health services should not go unchallenged]. PMID- 3854265 TI - [Executive Board. Professional policy preparedness depends on information]. PMID- 3854266 TI - [Dane in Goteborg saved with effective ambulance effort]. PMID- 3854267 TI - [Student activities. Student nurses in Scandinavia meet about education]. PMID- 3854268 TI - [Psychiatry. We neglect the psychological care in Sundbygard]. PMID- 3854269 TI - [How do we avoid being taken advantage of politically in the future?]. PMID- 3854270 TI - [Psychiatry. Population needs an improved psychiatric service level]. PMID- 3854271 TI - [Health visiting. Project has revealed how it could yield a preventive effort]. PMID- 3854272 TI - [Work environment. Branch Safety Councils getting better at informing outside]. PMID- 3854273 TI - [Genetic studies and counseling in relation to VTO (early detection of developmental disorders)]. PMID- 3854274 TI - Two-step purification of tryptophan-accepting tRNA from Bacillus stearothermophilus. AB - Tryptophan-accepting tRNA has been purified essentially to homogeneity from Bacillus stearothermophilus. Crude tRNA was chromatographed first on benzoylated DEAE-cellulose and then on Sepharose 4B with reverse salt gradient elution. The product has tryptophan acceptor activity in excess of 2 nmol [14C]tryptophan per A260 unit. This procedure avoids costly aminoacylation, a step characteristic of other one- and two-step procedures. In two separate purifications 7 and 11 mg of tRNAtrp were prepared from 750 and 1000 g of frozen cells, respectively. This yield compares favorably with that from other procedures. The pure tRNAtrp has been crystallized under several different conditions. PMID- 3854275 TI - Asphyxia and hyaline membrane disease in neonatal monkeys. AB - An animal model for studying the relationship between perinatal asphyxia and hyaline membrane disease (HMD) is described. The HMD developed in these Macaca mulatta (rhesus) and M. arctoides (stump tail) monkeys was clinically, physiologically, and histologically similar to that seen in human infants. The monkeys were delivered by cesarean section at a gestational age of 85-91% of term when surfactant, though present, was less than mature levels. Asphyxia at birth proved to be an important factor in disease development. Five minutes of asphyxia immediately before the first breath greatly increased the incidence and severity of HMD when compared to nonasphyxiated controls of a similar gestational age. Amniotic fluid L/S ratios did not differ significantly in the asphyxiated and control groups but data based on static pressure-volume studies of the excised lungs indicated that the surfactant activity of the asphyxiated group was significantly less. Lung maturity with regard to surfactant production appears to be a critical factor. The data from these experiments, together with data cited in the literature, strongly suggest that the lung and its surfactant system is most vulnerable to hypoxia and/or acidosis during the early stages of surfactant production. The asphyxiated non-human primate model used here should prove valuable for studying the pathogenesis of HMD and especially for further clarifying the relationship between perinatal asphyxia and HMD. PMID- 3854276 TI - Nursing homes in Australia: staffing and standards. PMID- 3854278 TI - Interdisciplinary health teams: a question of attitude. PMID- 3854277 TI - Professional preparation: some observations on health knowledge and health attitudes. PMID- 3854279 TI - New horizons: literary studies in the nursing course. PMID- 3854280 TI - Changing nursing: a Netherlands perspective. PMID- 3854281 TI - Antimicrobial therapy in dialysis patients. I. Penicillins and cephalosporins. AB - Antibiotic therapy, using penicillins or cephalosporins, is frequently required in patients on maintenance hemodialysis. Points to consider are dose adjustment for drugs which are excreted via the kidney, drug dialysability, and cumulation with frequent occurrence of side reactions, neurotoxicity and bleeding being the clinically most important ones. For third-generation cephalosporins with N methylthiotetrazole side chain, impaired intrahepatic vitamin K metabolism may cause problems of hemostasis which can be avoided by dose adjustment and prophylactic administration of vitamin K1. PMID- 3854282 TI - A profile of the new young chronic patient: implications for psychiatric nursing for the 90's. PMID- 3854283 TI - Dealing with disturbed and aggressive behavior. PMID- 3854284 TI - Prevention and management of disturbed behavior. PMID- 3854286 TI - [Nursing of patients after homotransplantation of the testis]. PMID- 3854287 TI - [Nursing of patients after removal of pheochromocytoma]. PMID- 3854285 TI - Susceptibility of some Staphylococcus species to aminoglycosides. AB - The Staphylococcal strains, identified by "The Simplified Lyogroups System" were tested for their susceptibility to methicillin and some aminoglycosides. The results, besides showing a higher ratio of susceptibility against aminoglycosides in methicillin-susceptible (MS) strains, show a different trend within each lyogroup. A total of 1616 wild Staphylococcus strains were isolated in microbiological units in Catania, Messina, Rome and Genoa. The results show a high susceptibility to aminoglycosides, both in MS and methicillin-resistant (MR) groups but with different trends among lyogroups. PMID- 3854288 TI - [Nursing of patients undergoing auto-control ileostomy]. PMID- 3854289 TI - [Transplantation of the abdominal external oblique muscle in flail-knee]. PMID- 3854290 TI - [T-tube obstruction following an operation on the bile duct: clinical analysis]. PMID- 3854291 TI - [Ventriculus lateralis cerebro-vesical shunt and patient care]. PMID- 3854292 TI - [Nursing of patients wtih arterial injuries of the extremities]. PMID- 3854293 TI - [Index of the nursing of patients with heart failure]. PMID- 3854294 TI - [Care of a patient with septicemia after attempted suicide by hanging]. PMID- 3854295 TI - [ECG monitoring of patients with heart diseases during tooth extraction]. PMID- 3854296 TI - [Prevention of cross infection in the nursery]. PMID- 3854297 TI - [Microsome pollution of syringes and ampules cut by various methods]. PMID- 3854298 TI - [Intramuscular injection in the gluteal region: selection and use]. PMID- 3854299 TI - [Assessment of management skills]. PMID- 3854300 TI - [AIDS--implications for South African nurses. II]. PMID- 3854301 TI - Teenage pregnancy--a contemporary problem of adolescence. PMID- 3854302 TI - Sex education--fact or fiction? PMID- 3854304 TI - South African Nursing Council examinations. PMID- 3854303 TI - Health education needs of the youth. PMID- 3854305 TI - Education for life. PMID- 3854306 TI - [Foot care in the elderly--2. General foot care for the elderly]. PMID- 3854307 TI - Inservice training in nursing. PMID- 3854308 TI - [The past as initial treatment]. PMID- 3854309 TI - Conformational changes of complement components C3 and B induced at higher temperature. AB - When purified C3 or B of human complement was incubated at various temperatures for 30 min, B lost most of its antibody combining capability at 46 degrees C, and C3 lost it at higher than 50 degrees C. When C3, heated B, D and Mg++ ions were incubated, there was a precipitous decrease in C3 conversion in the presence of heated B between 44 and 46 degrees C. No C3 conversion was observed in the presence of B heated at 50 degrees C. When C3 heated higher than 50 degrees C was incubated with B, D and Mg++ ions, C3 conversion decreased dramatically, but B was converted almost normally, suggesting that B could be complexed with heated and conformationally altered C3 and cleaved by D. The fluorescence intensity of heated C3 excited at 288 nm gradually decreased between 44 and 46 degrees C. The fluorescence 288 nm gradually decreased between 44 and 46 degrees C. The fluorescence intensity of C3 was slightly increased by 1-anilino-8-naphthalene sulfonate (ANS) at 50 degrees C and significantly increased at 56 degrees C, while ANS enhancement of fluorescence of B began at 46 degrees C and was significant at 50 degrees C, indicating that the surface of B and C3 became hydrophobic between 44 and 46 degrees C, and 46 and 50 degrees C, respectively. These results suggest that conformations of C3 and B have low melting points at which they change confirmations drastically. PMID- 3854310 TI - Strengthening our networks. PMID- 3854311 TI - Passing NCLEX (National Council Licensure Examinations). PMID- 3854312 TI - An analysis of trends in nursing practice. PMID- 3854313 TI - Interim report on the National Council's Study of Nursing Practice. PMID- 3854314 TI - An analysis of trends in the legislation and regulation of nursing practice. PMID- 3854315 TI - The last taboo: roadblocks to researching menarche. PMID- 3854316 TI - Identifying social support components in prenatal populations: a multivariate analysis on alcohol consumption. PMID- 3854317 TI - The relationship of age and other variables to gratification in mothering. PMID- 3854318 TI - The market for nurse practitioner services among women 18 to 40 years of age. PMID- 3854320 TI - A critique of research: a feminist perspective. PMID- 3854319 TI - Factors related to women's preferences for OBGYN care providers: an explanatory survey. PMID- 3854321 TI - Sex role identity and depression in nurses. PMID- 3854322 TI - The psychology of female infertility: toward a new perspective. PMID- 3854323 TI - Induced abortion: reported and observed practice in Taiwan. PMID- 3854324 TI - The relationship between social support and psychological well-being in rheumatoid arthritic women from two ethnic groups. PMID- 3854325 TI - Isolation and characterization of porcine leukocyte elastase. Leukocyte elastase inhibitor complexes in porcine blood, II. AB - Porcine leukocyte elastase was purified from granulocytes by chelating chromatography on copper chelate Sepharose and by ion exchange chromatography on CM-Sepharose. Thus an enzyme preparation with a specific activity (substrate: MeOSuc(Ala)2ProValNan) of 89.3 U/mg protein was obtained. Dodecyl sulphate gel electrophoresis revealed one protein band corresponding to a molecular mass of 27 kDa. The amino acid composition was determined and isoleucine was identified as the only N-terminal amino acid residue. The bimolecular velocity constant for the inhibition by diisopropyl fluorophosphate was determined as 2000 1 . mol-1 . min 1. The dissociation constants, Ki, of the complexes of porcine leukocyte elastase with various inhibitors were calculated. The kinetic constants for the elastase catalysed hydrolysis of MeOSuc(Ala)2ProValNan, Suc(Ala)2ValNan and Suc(Ala)3Nan were determined, as well as the kinetic constants of the inactivation of leukocyte elastase by active site mapping reagents. Detergents such as Triton X 100, Tween 20 and Brij 35, as well as porcine serum albumin, activated the porcine leukocyte elastase preparation. PMID- 3854326 TI - Evaluating teaching skills instruction for maternal-infant health care providers. PMID- 3854328 TI - Educational efforts to support primary nursing. PMID- 3854327 TI - Staff development: a functional program. PMID- 3854329 TI - You be the jury. PMID- 3854330 TI - Teaching time management to ward clerks. PMID- 3854331 TI - Decentralized CPR. PMID- 3854333 TI - Standards-based evaluation of hospital nursing education services. PMID- 3854332 TI - Learning needs assessment: a complex process. PMID- 3854334 TI - Improving pregnancy outcome with nurse-midwifery care. PMID- 3854335 TI - Birth in the left lateral position--an alternative to the traditional delivery position. PMID- 3854336 TI - Evaluation of the mean arterial pressure to predict hypertension in pregnant adolescents. PMID- 3854337 TI - Relationship of the birth experience to later mothering behaviors. PMID- 3854338 TI - Breast feeding after reduction mammoplasty. PMID- 3854339 TI - Midwifery management of premature rupture of the membranes at term. PMID- 3854340 TI - A second look at recordkeeping. PMID- 3854341 TI - Reciprocity for midwives: the time has come. PMID- 3854343 TI - Nurse-midwifery care of adolescents. PMID- 3854342 TI - Siblings at birth: impact on parents. PMID- 3854344 TI - Concurrent validity of Leopold's maneuvers in determining fetal presentation and position. PMID- 3854345 TI - Cost averted by providing comprehensive prenatal care to teenagers. PMID- 3854346 TI - The scultetus binder. PMID- 3854347 TI - Professional liability risk management and incident management in obstetrics. PMID- 3854348 TI - Frequency of labor dysfunction in nulliparas over the age of thirty. PMID- 3854349 TI - The success and failure of a nurse-midwifery practice--some personal reflections. PMID- 3854350 TI - Comparative study of Cambodian, Hmong, and Caucasian infant and maternal perinatal profiles. PMID- 3854351 TI - Factors contributing to client nonuse of the Cardiff Count-to-ten fetal activity chart. PMID- 3854353 TI - Midwifery management of prodromal labor. PMID- 3854352 TI - The Papanicolaou smear. PMID- 3854354 TI - Responding to claims and lawsuits. PMID- 3854355 TI - Transcultural nursing: bridging the gap. Abstracts from the 1985 APON Conference, October 16-19, 1985; Key biscayne, Florida. PMID- 3854356 TI - Clinical problems: teaching patients and their family about laminar air flow environment. PMID- 3854357 TI - Research: an overview of quasi-experimental design. PMID- 3854358 TI - Lorazepam as an antiemetic. PMID- 3854359 TI - Development of a program using general anesthesia for invasive procedures in a pediatric outpatient setting. PMID- 3854361 TI - [Research to evaluate nursing actions. Commentary: meaning of teaching research in education]. PMID- 3854360 TI - Innervation of the late distal nephron: an autoradiographic and ultrastructural study. AB - A study of the monoaminergic innervation of the cortical distal nephron beyond the thick ascending limb of Henle (TALH) was carried out by surveying nine autoradiograms, from three rats injected with exogenous tritiated norepinephrine, for overlapping of the tubule by accumulations of autoradiographic grains (AAGs). The largest number of the AAGs appeared on the late distal convoluted tubule connecting tubule (LDCT-CNT) portion and the vast majority of the AAGs were related to the afferent arteriole. The distal convoluted tubule (DCT) and cortical collecting duct (CCD) showed half of their AAGs related to the efferent arterioles and capillary-interstitium although a substantial amount was associated with the afferent arterioles or arteries. Electron microscopy of reembedded autoradiograms demonstrated the presence of neuroeffector junctions with the CNT and CCD at sites of AAG overlap. The presence of adrenoceptors in the late distal nephron suggests the possibility of a local response of the nephron to the action of the adrenergic nerves shown in this study. PMID- 3854363 TI - [Commentary; a thought on nursing evaluation]. PMID- 3854362 TI - [Commentary; the evaluation of counseling in clinical psychology]. PMID- 3854364 TI - [Commentary; the evaluation of guidance for practice]. PMID- 3854365 TI - [Case report: a trial to evaluate nursing actions]. PMID- 3854366 TI - [A study of support concepts in day care]. PMID- 3854367 TI - [In a corner of the laboratory (4). Multiplicity of meaning in Japanese and differentiation in English]. PMID- 3854368 TI - [For beginners in nursing research. Report: working and motherhood]. PMID- 3854369 TI - [Distinguished guests and participants in the Midwifery Day]. PMID- 3854370 TI - [Study tour to the DDR]. PMID- 3854371 TI - [Professional practice and specialization in nursing]. PMID- 3854372 TI - [Evaluation of nursing administration by systematic thinking. 5]. PMID- 3854373 TI - [Review of the basic nursing program for schools of nursing in universities and the experimental project. Report of Nursing Educational System Review Committee]. PMID- 3854374 TI - [Nursing issues to be encountered toward the 21st century--from the general and special interest sessions]. PMID- 3854376 TI - [Nurses--a force for what? From NCFI meeting]. PMID- 3854375 TI - [Propositions for nursing education to accommodate the changes in social support for nursing]. PMID- 3854377 TI - [Professional visits]. PMID- 3854378 TI - [Seeking one's own identity]. PMID- 3854379 TI - [Visiting Nursing Services in the U.S.A. 9]. PMID- 3854381 TI - [Evaluation of nursing service administration by systematic thinking. 2]. PMID- 3854380 TI - [Nursing and counseling--from case studies]. PMID- 3854382 TI - [The generation and classification of nursing diagnoses]. PMID- 3854383 TI - [What nurses should do to maintain patients' social environment]. PMID- 3854384 TI - [Nurses' attitude to patients, Japan and USA]. PMID- 3854385 TI - [Encouraging activities to promote independence--special program at a psychiatric patients' home in Saitama]. PMID- 3854386 TI - [Exchange with the villagers--inhabitants at a home for mentally retarded in Hokkaido]. PMID- 3854387 TI - [Isolated patients at a national sanitorium]. PMID- 3854388 TI - [Average years of stay, 35 years--long isolated life at a national Hansen's disease sanitorium]. PMID- 3854389 TI - [Visiting Nursing Services in the U.S.A. 5]. PMID- 3854390 TI - [Teaching poetry at the school of nursing--for improving imagination. 19]. PMID- 3854391 TI - [Visiting Nursing Services in the U.S.A. 6]. PMID- 3854392 TI - [Evaluation of nursing administration by systematic thinking. 3]. PMID- 3854393 TI - [Lydia Hall's place in the development of theory in nursing]. PMID- 3854394 TI - [Problems surrounding mental health care]. PMID- 3854395 TI - [Teaching terminal care in a basic course]. PMID- 3854397 TI - [Learning through teaching]. PMID- 3854396 TI - [A visit to my mother-in-law in a hospice in a small English town]. PMID- 3854398 TI - [Our experience at Seirei Hospice]. PMID- 3854399 TI - [Death education in nursing education. Education on death and dying]. PMID- 3854400 TI - [Death education in nursing education]. PMID- 3854401 TI - [Examples of undesirable infant care]. PMID- 3854402 TI - [Teaching poetry at the school of nursing--for improving imagination. 20]. PMID- 3854403 TI - [Coffee and pancreatic cancer--halothane and ethyl ether inhalation therapy for acute severe asthma attacks]. PMID- 3854404 TI - [Teaching poetry in the school of nursing--for improving imagination. 21]. PMID- 3854405 TI - [Estrogen receptors in breast cancer--prophylactic sclerosing treatment of esophageal varices]. PMID- 3854406 TI - [Nursing publicity--journalists' view of nursing. 4 of 6 family members being hospitalized]. PMID- 3854407 TI - [Nursing as I see it through TV program preparation]. PMID- 3854408 TI - [PHN activities--care of elderly persons]. PMID- 3854409 TI - [A scandal at a psychiatric hospital and nursing personnel]. PMID- 3854410 TI - [My first experience--contact with nurses at the hospital]. PMID- 3854412 TI - [Nurses in Okinawa Prefecture]. PMID- 3854411 TI - [Reactions to TV program on death of a cancer patient]. PMID- 3854413 TI - [Nurses in TV drama]. PMID- 3854414 TI - [Visiting Nursing Services in the U.S.A. 7]. PMID- 3854415 TI - [Euphemisms in nursing's future]. PMID- 3854417 TI - [Evaluation of nursing administration by systematic thinking. 4]. PMID- 3854416 TI - [From teachers' side. Learning to do one's best and to live better]. PMID- 3854418 TI - [Need for continuing education and role of the professional Association. Report of the Committee on continuing Nursing Education]. PMID- 3854419 TI - [From teachers' side. Assisting students to learn rather than teaching]. PMID- 3854420 TI - [From teachers' side. Difficulties in teaching]. PMID- 3854421 TI - [From students' side. Learning experiences at the hospital]. PMID- 3854422 TI - [From students' side. Clinical experience in depth rather than acquisition of broad knowledge]. PMID- 3854423 TI - [From students' side. Motivated by attractive teachers]. PMID- 3854424 TI - [From students' side. Return to school from practice]. PMID- 3854426 TI - [From teachers' side. Teaching and learning]. PMID- 3854425 TI - [From students' side. When I was a student]. PMID- 3854427 TI - [From students' side. Confidence in my teacher encouraged me to learning]. PMID- 3854428 TI - [Is nursing's self-regulatory power being eroded?]. PMID- 3854430 TI - [Nursing of bronchial asthma patients. Physiopathology of bronchial asthma]. PMID- 3854429 TI - [Visiting Nursing Services in the U.S.A. 8]. PMID- 3854431 TI - [Nursing of bronchial asthma patients. Diagnosis and the therapeutic process for patients with bronchial asthma]. PMID- 3854432 TI - [Nursing of bronchial asthma patients. Comprehending the overall status of patients wih bronchial asthma]. PMID- 3854433 TI - [Nursing of bronchial asthma patients. Nursing planning for patients with bronchial asthma]. PMID- 3854434 TI - [Nursing of bronchial asthma patients. The keypoints in nursing of a patient with bronchial asthma who has been hospitalized for an extended period and lost hope for recovery]. PMID- 3854435 TI - [Nursing of bronchial asthma patients. Discussion: significance of recreation among patients who have been hospitalized for extended periods]. PMID- 3854436 TI - [Lessons in the nursing practice. Reflection on the nurse's preoccupation with the diagnosis of schizophrenia]. PMID- 3854437 TI - [Lessons in the nursing practice. Nursing of a patient with neuro-Behcet disease]. PMID- 3854438 TI - [Lessons in clinical practice. Conference: efforts to reduce patients' psychological pain]. PMID- 3854440 TI - [Sanya, a slum area in Japan]. PMID- 3854439 TI - [Nursing of dying patients. 5. Sensitivity of dying patients]. PMID- 3854441 TI - [Pre- and postoperative nursing of a patient with cerebral aneurysm]. PMID- 3854442 TI - [Nursing of a puerperal patient having epileptic attacks and being apprehensive about child care]. PMID- 3854443 TI - [Pain and the response of nurses to the patient]. PMID- 3854444 TI - [Expressions of pain and differences in individuals]. PMID- 3854445 TI - [Need to pay attention to patients reporting pain]. PMID- 3854446 TI - [Loneliness of patients suffering pain]. PMID- 3854447 TI - Treatment of the perineum by pulsed electro magnetic therapy. PMID- 3854448 TI - Supervisors of midwives. PMID- 3854449 TI - Midwives rule--OK! PMID- 3854450 TI - Counting the pennies. Interview by Anna Alexander. PMID- 3854451 TI - On the road again... the life of a commuter. PMID- 3854452 TI - Power through participation. PMID- 3854453 TI - The operating room nurse is an essential member of the surgical team. PMID- 3854454 TI - Practice makes perfect: improve your image through simulation. PMID- 3854455 TI - Front door cost containment. PMID- 3854456 TI - Fighting burnout among nurse managers. PMID- 3854457 TI - Nursing diagnosis: a psychiatric nurse's point of view. PMID- 3854458 TI - Identifying student-oriented faculty. PMID- 3854459 TI - Identification of health risk factors among undergraduate university students stage 2: health hazard appraisal. PMID- 3854460 TI - [A teaching experience of the concept "family system" and of the "family-sick person" intervention]. PMID- 3854461 TI - Differences in communication behaviours of shy and non-shy student nurses in situations with evaluative potential. PMID- 3854462 TI - Sources of stress in third year baccalaureate nursing students. PMID- 3854463 TI - Sources and effects of anxiety in videotape learning experience. PMID- 3854464 TI - Pressure garments prevent heavy scarring. PMID- 3854465 TI - Towards providing standard patient care. PMID- 3854466 TI - Nursing in primary health care. PMID- 3854468 TI - Geriatric nursing: rest is to rust. PMID- 3854467 TI - Health messages through folk media: a critical review. PMID- 3854469 TI - Jurisprudence and the nurse. PMID- 3854470 TI - Perspectives on industrial nursing. PMID- 3854471 TI - Occupational health nursing in an industrial complex. PMID- 3854473 TI - The future of public health nursing. PMID- 3854472 TI - Newer concepts in management of primary health care. PMID- 3854474 TI - Health messages through folk media. II. Evaluation of the programmes. PMID- 3854476 TI - Skin cancer: a continuing problem. PMID- 3854475 TI - The response of human endometriotic implants to the anti-progesterone steroid R 2323: a histologic and ultrastructural study. AB - The histology and ultrastructure of small endometriotic lesions were studied in 19 patients before and after hormonal therapy with the anti-progesterone steroid R 2323 (Gestrinone). Histologic results demonstrate that treatment of endometriosis with this steroid does not result in complete elimination of the endometriotic foci, although glandular proliferation and secretion are arrested in most implants. The ultrastructural results indicate that this inhibition of proliferation and secretion is related to an enhanced activity of the lysosomal system in the epithelial cells of some endometriotic foci. In other implants, or even in other cells of the same foci, epithelial cells with only a small amount of supranuclear cytoplasm but lacking lysosomes may be found. The morphologic data demonstrate that the cellular involutionary response to the antiprogesterone drug Gestrinone involves an activation of the lysosomal system, an abortive apocrine secretion of cell remnants and finally, in some implants, an extrusion of individual epithelial cells. Since this involutionary process of endometriotic cells mimics the pre-menstrual lysosomal degradation in the endometrium, it is suggested that the competitive binding of the antiprogesterone Gestrinone to the progesterone receptors of endometriotic epithelium may cause a cellular progesterone withdrawal effect. PMID- 3854477 TI - Rehabilitation after disfigurative facial surgery. PMID- 3854478 TI - Trends in ambulatory surgery: changes in the marketplace. PMID- 3854479 TI - Plastic surgical nurses as first assistants: a survey. PMID- 3854480 TI - Office staff responsibilities in the prevention of plastic surgery malpractice suits: a practical guide. PMID- 3854482 TI - [The locomotive apparatus of the upper extremity (1). General osteology, principal fractures]. PMID- 3854481 TI - [Serum elastase 1 in the diagnosis of pancreatic diseases]. PMID- 3854483 TI - [The water mattress (2). Technic]. PMID- 3854484 TI - [Surgical technique of total knee arthroplasty]. PMID- 3854485 TI - [Dressings nurse and instrument nurse during total knee arthroplasty]. PMID- 3854486 TI - [Developments after total knee arthroplasty]. PMID- 3854487 TI - [Functional reeducation after knee prosthesis]. PMID- 3854488 TI - [Relationship between nursing service and laboratory]. PMID- 3854489 TI - [Anatomy and physiology of the knee]. PMID- 3854491 TI - [Architectural concept of the operating area]. PMID- 3854490 TI - [The nurse in front of an asthma crisis]. PMID- 3854492 TI - [Indications for total knee arthroplasty]. PMID- 3854493 TI - [A community health promotion center]. PMID- 3854494 TI - [In Luxemburg, an intermittent juvenile resuscitation service]. PMID- 3854495 TI - [Asthmatic children: introduction and use of a method of education in a home of specialized sanitary characteristics]. PMID- 3854496 TI - [A paper on home nursing care]. PMID- 3854497 TI - [Reeducation in social behavior of the elderly]. PMID- 3854498 TI - [Health education: bodily hygiene for children]. PMID- 3854499 TI - [Taking care of the bottles in the nursing station]. PMID- 3854500 TI - [Alphonse and Dominique]. PMID- 3854501 TI - [A new nursing technic for the treatment of skin ulcers]. PMID- 3854503 TI - [The nursing sector in an economic context]. PMID- 3854502 TI - [Poor patient--poor doctor]. PMID- 3854504 TI - [Inserting an oxygen tube (adults)]. PMID- 3854505 TI - [The nurse and the awakening of the patient "in a state of coma"]. PMID- 3854506 TI - [Behavior of the patient with brain injuries in rehabilitation. What does it mean in a rehabilitation service when one maintains that the behavior of a patient changes?]. PMID- 3854507 TI - [The nurse and functional rehabilitation]. PMID- 3854508 TI - [A course of nursing care in an after-care service for burn patients]. PMID- 3854509 TI - [The nurse and rehabilitation of a patient with hand injuries]. PMID- 3854510 TI - [Hygiene of fluidized beds]. PMID- 3854511 TI - [Occupational medicine (1). Administrative organization--standards of the locations]. PMID- 3854512 TI - [Round table discussion. Hepatitis B and protection of the nurse]. PMID- 3854513 TI - [Rifampicin (1): Rifadin, Rimactane]. PMID- 3854514 TI - [Ocular dressing with installation of eye drops]. PMID- 3854515 TI - [Diagnosis of prolonged fevers. Role of the laboratory]. PMID- 3854516 TI - [Diagnosis of isolated or associated fevers]. PMID- 3854517 TI - [Prolonged fever. Searching for an etiology]. PMID- 3854518 TI - [Homeothermy and fever]. PMID- 3854519 TI - [Fever and cancer]. PMID- 3854520 TI - [And if we collaborate!]. PMID- 3854521 TI - [Observations on the care to be given to patients with prolonged fever]. PMID- 3854522 TI - [The night of the old man]. PMID- 3854523 TI - [Occupational medicine (2). Activities of the occupational physician]. PMID- 3854524 TI - [Symptomatology of a febrile state]. PMID- 3854525 TI - [Umuline]. PMID- 3854526 TI - [Placing of an insulin pump. Subcutaneous route]. PMID- 3854527 TI - [The team and pedagogics in the education of the diabetic]. PMID- 3854528 TI - [Motivation and education of the diabetic patient]. PMID- 3854529 TI - [Education of the diabetic. Methods of surveillance]. PMID- 3854530 TI - [Diabetic complications and the role of the nurse]. PMID- 3854531 TI - [The diabetic in everyday life]. PMID- 3854532 TI - [Portable insulin infusers]. PMID- 3854534 TI - [Patient education: one of the roles of the nursing personnel]. PMID- 3854533 TI - [Education of the diabetic. Remission]. PMID- 3854535 TI - [Presentation of a guide to the nurses records]. PMID- 3854536 TI - [Comfeel Ulcus (sodium carboxymethyl cellulose)]. PMID- 3854537 TI - [Bandaging a leg ulcer of venous origin with a plaque of Comfeel ulcus]. PMID- 3854538 TI - [Computerization of public hospitals]. PMID- 3854539 TI - [Computers and the nursing service: to what purpose?]. PMID- 3854540 TI - [Computers and nursing care]. PMID- 3854541 TI - [Nurses as a social force]. PMID- 3854542 TI - [Study of hepatitis B vaccination]. PMID- 3854543 TI - [From psychological automatism to psychasthenia]. PMID- 3854544 TI - [The successful action and psychotherapeutic success]. PMID- 3854545 TI - [The subconscious according to Pierre Janet]. PMID- 3854546 TI - [Kaleorid]. PMID- 3854547 TI - [Calcium inhibitors. Pharmacology]. PMID- 3854548 TI - [Calcium inhibitors in the treatment of angina pectoris]. PMID- 3854549 TI - [Other drugs used in angina pectoris]. PMID- 3854550 TI - [Drug therapy of coronary ischemia]. PMID- 3854551 TI - [Strategies in the medical treatment of angina pectoris]. PMID- 3854552 TI - [Heart arrest]. PMID- 3854553 TI - [Nitrate derivatives. Pharmacology]. PMID- 3854554 TI - [Therapy with nitrate derivatives]. PMID- 3854556 TI - [Cataracts in children]. PMID- 3854555 TI - [Detection and treatment of strabismus in children]. PMID- 3854557 TI - [Glaucoma in children]. PMID- 3854558 TI - [Eye injuries]. PMID- 3854559 TI - [Congenital cataract. Case reports]. PMID- 3854560 TI - [Conjunctivitis in children]. PMID- 3854561 TI - [From Kirkenes to the West Bank: the only nurse for 16,000 people]. PMID- 3854562 TI - [Absenteeism and health]. PMID- 3854563 TI - [Bilingual and nursing services]. PMID- 3854564 TI - [Aged policy--aged care]. PMID- 3854565 TI - [After Summer's end: burned out, guilt-ridden and worn out]. PMID- 3854566 TI - [Ethics investigating committee: does the individual's responsibility disappear?. Interview by Bjorn Arild Ostby]. PMID- 3854567 TI - Successful treatment with mezlocillin of a child infected by penicillin G resistant Staphylococcus aureus. PMID- 3854568 TI - [Bjorn's message spreads over the entire country. Interview by Jan Thomasson]. PMID- 3854569 TI - [Stop reports from Health Care Planning and Rationalization about Soderby Hospital]. PMID- 3854570 TI - [Unni in a private luxury hospital in Oslo: certainly it is an unfair system!. Interview by Christer Kallstrom]. PMID- 3854572 TI - [Verdict in dialysis affair is being appealed--but will there be a new trial?]. PMID- 3854571 TI - [Strong protest against dialysis verdict]. PMID- 3854573 TI - Sucralfate. PMID- 3854574 TI - Library support to the nursing profession. PMID- 3854575 TI - The blood story. Part IV. Adverse reactions to blood transfusion. PMID- 3854576 TI - Using the computer for clinical placements. PMID- 3854577 TI - Excitement on campus. PMID- 3854578 TI - Nurse & the law. Birthing difficulties: a staffing problem? PMID- 3854580 TI - [Basis of nursing: in seeking a rich personality]. PMID- 3854579 TI - Infections in immunocompromised patients. II. Established therapy and its limitations. AB - Diseases affecting host defense mechanisms include neutropenia, aplastic anemia, leukemia, lymphocytopenia (B- and T-lymphocyte abnormalities), deficiencies of complement, splenectomy, diabetes mellitus, renal failure, and autoimmune diseases. Immunocompromised patients face frequent life-threatening complications of infections, particularly when they are hospitalized and receiving cytotoxic myelosuppressive drugs. Oral antimicrobial agents affect the flora of the host's alimentary tract, enhancing colonization by resistant, potentially pathogenic, strains and species, especially in a hospital environment. Nalidixic acid, oxolinic acid, pipemidic acid, polymyxins, co-trimoxazole, polyene antibiotics, and framycetin, which preserve anaerobic colon flora, do not affect the host's colonization resistance and can be given in oral doses high enough to suppress and clear susceptible potential pathogens from the intestinal tract. Such prophylactic treatment permits patients to stay hospitalized in ward conditions. In the compromised host who has fever and suspected septicemia, a decision concerning treatment should be made within an hour of notification of the patient's condition. In acute stages of life-threatening infection, the principal aim of antimicrobial chemotherapy is to provide the most potent treatment; at this stage, the accompanying side effects are less important. An essential component of therapy should be an aminoglycoside paired with a beta-lactam antibiotic. Because the incidence of staphylococcal resistance to antibiotics is high, preliminary sensitivity-testing is essential when staphylococcal sepsis threatens the life of a compromised host. Despite aggressive antibiotic therapy, more than half of immunocompromised patients and patients with severe underlying diseases die when gram-negative bacteria invade their blood. In these patients, medical or surgical removal of the septic focus is a major part of management, but plasma or plasma fractions should be given to correct hypovolemia, and an agent such as dopamine should be administered if volume replacement fails to restore adequate blood pressure. A high dose of corticosteroids should have a beneficial effect, and, for neutropenic patients with gram-negative bacteremia or fever, transfusion with functional neutrophils improves survival. PMID- 3854581 TI - [Comment on nursing by a former midwife: an effort to understand the patient]. PMID- 3854582 TI - [To live as a midwife: beyond role-playing]. PMID- 3854584 TI - [Life, sex, and death]. PMID- 3854583 TI - [Regional practice of counseling (organization of an encounter group)]. PMID- 3854585 TI - [An interview with Ms. Dorothea Lang]. PMID- 3854586 TI - [Establishment of an ambulatory care service by midwives and its achievement]. PMID- 3854587 TI - [Clinical tests in obstetrics. 1. Pregnancy tests]. PMID- 3854588 TI - [Clinical comparison of cloth and paper diapers in the incidence of diaper rash in low birth weight infants]. PMID- 3854589 TI - [Report on the 20th ICM (International Congress of Midwifery) at Sydney, Australia]. PMID- 3854590 TI - [Changes in midwifery functions. 1. My encounter with the midwifery profession]. PMID- 3854591 TI - [Clinical study of pharmacology. 10. Temporal study of delivery (3)]. PMID- 3854592 TI - [IUGR and abnormalities]. PMID- 3854593 TI - [Heart diseases and physiopathology of pregnancy, delivery, and puerperium]. PMID- 3854594 TI - [Treatment of expectant patients with heart diseases]. PMID- 3854595 TI - [Management of cardiac patients during delivery]. PMID- 3854596 TI - [Nursing care of cardiac patients during pregnancy and puerperium]. PMID- 3854597 TI - [Assessment and nursing plans for cardiac patients during pregnancy and puerperium]. PMID- 3854598 TI - [Nursing of a pregnant patient with patent ductus arteriosus and pulmonary hypertension]. PMID- 3854599 TI - [Nursing research. On dietary instructions for pregnant patients]. PMID- 3854600 TI - [My point of view: re-evaluation of the purpose of training at a public health clinic as part of the curriculum for midwifery education]. PMID- 3854601 TI - [Nursing of an expectant patient with Basedow's disease]. PMID- 3854602 TI - [Clinical pharmacology for midwives. 11. Temporal study of delivery]. PMID- 3854603 TI - [Introduction to obstetrical endocrinology. 23. Sex differentiation and hormones]. PMID- 3854604 TI - [Disturbances of umbilical blood flow and variable deceleration]. PMID- 3854606 TI - [Clinical tests in obstetrics. 3. Tests for infertility (2)]. PMID- 3854605 TI - [Clinical tests in obstetrics. 2. Tests for infertility (1)]. PMID- 3854608 TI - [Mother-to-infant "bonding"]. PMID- 3854607 TI - [Nursing re-evaluation of the early contact between mother and infant. Discussion]. PMID- 3854609 TI - [Early mother-neonate contact and the mother-child relationship]. PMID- 3854610 TI - [Self massaging of the breast: practice of puerperal breast care (the Suwa Maternity Clinic method)]. PMID- 3854611 TI - [Better recognition of the midwifery profession: a comparison with the midwifery activities in the United States]. PMID- 3854612 TI - [Obstetrics and type B hepatitis virus]. PMID- 3854613 TI - [Changes in the midwifery profession. 3. Contributions by the members of the organizing committee of the Japanese Association of Midwifery and Public Health Nursing]. PMID- 3854614 TI - [Clinical pharmacology for midwives. 12. Pregnancy complications: diabetes mellitus]. PMID- 3854615 TI - [Introduction to obstetrical endocrinology. 24. Preliminary to sexual maturation- a rival of adolescence]. PMID- 3854616 TI - [Risk associated with variable deceleration developing at stage 1 of delivery]. PMID- 3854617 TI - [Clinical examination in obstetrics. 4. Diagnosis of infections]. PMID- 3854618 TI - [On-the-job education of midwives]. PMID- 3854619 TI - [Recommendation of on-the-job education at the obstetrical ward]. PMID- 3854620 TI - [Experience in the ICU study as a midwife]. PMID- 3854621 TI - [Expectation of on the on-the-job training: viewpoint of a physician]. PMID- 3854622 TI - [Breast feeding of premature infants: a nursing viewpoint]. PMID- 3854623 TI - [A new trend in midwifery practice: an observation at the Royal Women's Hospital, Australia]. PMID- 3854624 TI - [Learning obstetrical nursing in basic nursing education: a survey of nursing students at our school in the past 5 years]. PMID- 3854625 TI - [Explanation of terminology in neonatology]. PMID- 3854626 TI - [Various approaches to childbirth and child rearing]. PMID- 3854628 TI - [Infinite possibility in perinatal nursing]. PMID- 3854627 TI - [Delivery by active birth]. PMID- 3854629 TI - [Changes in the midwifery profession. 4. The 1948 legislation concerning public health, midwifery, and nursing practice]. PMID- 3854630 TI - [Discussion: obstetrical nursing and the rights of mothers and children]. PMID- 3854631 TI - [Educational evaluation]. PMID- 3854632 TI - [Practice of dietetics]. PMID- 3854633 TI - [Medical social work]. PMID- 3854634 TI - [Clinical diagnosis in obstetrics. 5. Diagnosis of infections. (2)]. PMID- 3854635 TI - [Sexual practice in modern Japan: a clinical view at a hospital]. PMID- 3854636 TI - [Nursing actions in problems related to sex]. PMID- 3854638 TI - [Expectation on midwives: a survey on sexual practice during pregnancy]. PMID- 3854637 TI - [Nursing actions concerning sexual problems with special reference to sexuality]. PMID- 3854639 TI - [Telephone consultation on sexual problems]. PMID- 3854640 TI - [The roles of public health and medical personnel in relation to sex education]. PMID- 3854641 TI - [Sex education at health service facilities]. PMID- 3854642 TI - [Local sex education and consultation on sex-related problems]. PMID- 3854643 TI - [Midwifery education in Australia]. PMID- 3854645 TI - [On childbirth and child rearing. 2. Adolescence]. PMID- 3854644 TI - [Incorporation of sex education during clinical training in regional maternal and child health care]. PMID- 3854646 TI - [Changes in the midwifery profession. 5. The response to the 1948 legislation concerning public health, midwifery, and nursing practice]. PMID- 3854647 TI - [Nursing actions in daily activities]. PMID- 3854648 TI - [Basic course in neonatology. 2. Curves representing fetal growth and their utilization]. PMID- 3854649 TI - [Relative and absolute evaluation. 1]. PMID- 3854650 TI - [Dietary goal for expectant patients]. PMID- 3854651 TI - [Medical social work: a focus on the familial situations of expectant patients]. PMID- 3854652 TI - [Topics on intracranial hemorrhage of the newborn, with special reference to intraventricular hemorrhage (1)]. PMID- 3854653 TI - [Clinical examination in obstetrics. 6. Diagnosis of infections (3): HB virus infections in pregnancy]. PMID- 3854654 TI - [pregnancy and anemia: the mechanism of their interaction]. PMID- 3854655 TI - [Management of anemia in pregnancy]. PMID- 3854656 TI - [Nutritional education of pregnant women with anemia]. PMID- 3854657 TI - [On methods of health education of pregnant patients with anemia--evaluation based on survey results]. PMID- 3854658 TI - [Nursing of pregnant and puerperal patients with anemia]. PMID- 3854659 TI - [Episiotomy in normal delivery]. PMID- 3854660 TI - [Determination of gestational age]. PMID- 3854661 TI - [Nursing approach to mothers who delivered premature or deformed infants for better mother-child relations]. PMID- 3854662 TI - [Criticism and advice to the midwifery profession]. PMID- 3854665 TI - [Relative and absolute evaluation. 2]. PMID- 3854664 TI - [Changes in the midwifery profession. 6. The response to the 1948 legislation concerning public health, midwifery, and nursing practice]. PMID- 3854663 TI - [On childbirth and child rearing. 3. The initial intercourse]. PMID- 3854666 TI - [Energy count and energy intake]. PMID- 3854667 TI - [A pleasure in medical social work: a visit by a former patient]. PMID- 3854668 TI - [Intracranial hemorrhage of the newborn, with special reference to intraventricular hemorrhage (2)]. PMID- 3854669 TI - [Matter of patients' privacy in nursing]. PMID- 3854670 TI - [Continuing education in nursing: the current status in Japan]. PMID- 3854671 TI - [Tentative plan for continuing education in nursing: experience during the past 3 years since the establishment of Nursing Study Instruction Center at Chiba University School of Nursing]. PMID- 3854672 TI - [Background and development of the Far East continuing nursing education program: license renewal and continuing education in the United States]. PMID- 3854673 TI - [Reflection on the practice of continuing education]. PMID- 3854674 TI - [Introduction to POS: methods of teaching. 2. Writing a scenario for the disease of an individual patient]. PMID- 3854675 TI - [Training in electrocardiographic recording]. PMID- 3854676 TI - [On nursing education. 38. Uniqueness and transformation of ideas in research of nursing technology]. PMID- 3854677 TI - [Structure and function of education and learning. 2. On educational ideals]. PMID- 3854678 TI - Nursing care study on measles. PMID- 3854679 TI - A report of the study tour on community nursing n Kenya from May to July 1984 sponsored by the Commonwealth Foundation. PMID- 3854681 TI - The secret of passing examinations. PMID- 3854680 TI - How the future professional nurse can be helped to learn and internalise the moral character and professional obligation. PMID- 3854682 TI - Convention on the elimination of all forms of discrimination against women. PMID- 3854683 TI - Medical uncertainty, diagnostic testing, and legal liability. PMID- 3854684 TI - [Ocular pathology in middle and old age]. PMID- 3854686 TI - [Spinal osteochondrosis]. PMID- 3854685 TI - [Chronic gastritis in the middle-aged and elderly]. PMID- 3854687 TI - [Clinical aspects and treatment of parkinsonism]. PMID- 3854688 TI - [Care of parkinsonism patients]. PMID- 3854689 TI - [Drug interactions in the elderly]. PMID- 3854690 TI - [Use of kvadevit in geriatric practice]. PMID- 3854692 TI - [Anesthesia in treating caries]. PMID- 3854691 TI - [Risk factors for premature aging and its prevention]. PMID- 3854693 TI - [Standardized case for carrying syringes]. PMID- 3854694 TI - [Postgraduate training of nurses in the physiotherapy service]. PMID- 3854695 TI - [Work of the district nurse with the elderly]. PMID- 3854696 TI - [Aphthous stomatitis]. PMID- 3854697 TI - [Ethics and deontology for the nurse]. PMID- 3854698 TI - [Ischemic heart disease in the middle-aged and elderly]. PMID- 3854699 TI - A report on PHC work in India. PMID- 3854701 TI - WHO-Regional office for Europe. Postbasic and graduate education for nurses. PMID- 3854700 TI - ILO-OIT: the growing and changing world of health care. PMID- 3854702 TI - The Pope and the Catholic associations. PMID- 3854703 TI - [The treatment of tetanus]. PMID- 3854704 TI - [Rickettsiosis]. PMID- 3854705 TI - [Cholera]. PMID- 3854706 TI - [The plague]. PMID- 3854707 TI - [The nurse's letter. Apropos of a cholera epidemic in the circle of "Dire", Republic of Mali]. PMID- 3854708 TI - [Tetanus: clinical aspects]. PMID- 3854709 TI - [Exotic treponematoses in Africa]. PMID- 3854710 TI - [The nurse and primary health care in a community in the Cameroon]. PMID- 3854712 TI - [Borreliosis]. PMID- 3854711 TI - [Leptospirosis]. PMID- 3854713 TI - A longitudinal study of internal medicine resident attitudes toward the medical history. PMID- 3854714 TI - An analysis of medical students' residency and specialty choices. PMID- 3854715 TI - A case study of primary care internal medicine alumni: I. Career paths and practice characteristics. PMID- 3854716 TI - Patients' responses to involvement in medical education. PMID- 3854717 TI - Summary of the evaluation of the Ethics in the Core Curriculum Project. PMID- 3854718 TI - The ethical implications of medical student involvement in the care and assessment of patients in teaching hospitals--informed consent from patients for student involvement. Part I: A description of the origin and implementation of policies governing medical student interaction with patients and compliance with Federal and JCAH guidelines. PMID- 3854719 TI - The ethical implications of medical student involvement in the care and assessment of patients in teaching hospitals--informed consent from patients for student involvement. Part II: A description of student behavioral practices and perspectives on the issue of informed consent for their involvement in patient care and assessment. PMID- 3854720 TI - Clinical competencies of graduating medical students. PMID- 3854721 TI - Morning report: a descriptive view from two different academic settings. PMID- 3854722 TI - The relationship of resident physicians' medical care performance to their medical recording. PMID- 3854723 TI - The Iowa Student Physician Inventory: toward the assessment of noncognitive characteristics of medical school applicants. PMID- 3854724 TI - Premedical predictors of a research career. PMID- 3854725 TI - Determinants of the size and composition of the pool of black applicants to medical school. PMID- 3854726 TI - The use of standardized (simulated) patients as a needs determining tool in continuing medical education. PMID- 3854727 TI - A practice-based CME program in hypertension using a medication and behavioral treatment approach. PMID- 3854728 TI - An investigation of physician self-directed learning activities. PMID- 3854729 TI - Physician consultation practices in small rural communities. PMID- 3854730 TI - The determination of passing scores on medical licensure examinations: should we monitor students with marginally passing scores? PMID- 3854731 TI - A criterion-referenced examination in ECG interpretation. PMID- 3854732 TI - The relationship of subtest and examination score from the Medical Science Knowledge Profile and Part 1 of the National Board Medical Examination. PMID- 3854733 TI - Empathy and psychosocial attitudes in medical school faculty and students. PMID- 3854734 TI - Process and product in clinical teaching: a correlational study. PMID- 3854735 TI - Do medical faculties value comprehensive care? The students' response. PMID- 3854736 TI - Measuring teaching excellence in clinical medicine: a faculty perspective. PMID- 3854737 TI - Discrepancies between physicians' training and practice: new challenges for graduate medical education. PMID- 3854738 TI - A topological paradigm of physician performance and competence. PMID- 3854739 TI - Preparing collaborative research proposals: three applications in medical education. PMID- 3854740 TI - Prevention of student attrition in medical school. PMID- 3854741 TI - Developing and nurturing the talents of minority high school students for careers in medicine. PMID- 3854742 TI - Self directed learning: wisdom from independent study programs. PMID- 3854743 TI - A prospectively-designed assessment of the condition diagramming method for teaching diagnostic reasoning. PMID- 3854744 TI - Medical student and resident "impairments": prediction, early recognition, and intervention. Should they be rehabilitated or should they be removed? PMID- 3854745 TI - Clinical teaching: three perspectives on faculty development. PMID- 3854746 TI - Medical understanding and its limits in clinical reasoning. PMID- 3854747 TI - Curricular reform at the structural level. PMID- 3854748 TI - Educational implications of the relationship between patient satisfaction and medical malpractice claims. PMID- 3854749 TI - The role of a student note-taking cooperative in a basic science curriculum. PMID- 3854750 TI - Teaching basic science: Dr. Fox in the physiology chicken coop. PMID- 3854751 TI - Utilization of the objective structured clinical examination (OSCE) in gynecology/obstetrics. PMID- 3854752 TI - Pretest in Medical Biochemistry, used to establish conference groups, becomes less sensitive predictor of course grade as curriculum density decreases. PMID- 3854753 TI - Curriculum development processes in ten innovative medical schools. PMID- 3854754 TI - Emergency medicine skills and topics in undergraduate education. PMID- 3854755 TI - A study of a probabilistic technique for teaching diagnostic skills to medical students. PMID- 3854756 TI - Knowledge integration from clinical texts: use of factual, inferential and integrative questions. PMID- 3854757 TI - Adapting a paradigm from cognitive science to medical education: problems and possible solutions. PMID- 3854758 TI - Publish and flourish: are you growing? PMID- 3854759 TI - Accountability: the consequence of autonomy. PMID- 3854760 TI - Trauma center designation: impact on nursing practice. PMID- 3854761 TI - The role of the professional nurse in family centered care. PMID- 3854762 TI - How the significant other can help an agoraphobic patient. PMID- 3854763 TI - The role of the head nurse in primary nursing. PMID- 3854764 TI - Head nurse and clinical educator: a team approach to quality patient care. PMID- 3854765 TI - Conceptual models--a framework for nursing practice. PMID- 3854766 TI - Standards of practice: from the shelf to the bedside. PMID- 3854767 TI - [Involvement in setting up the operating room]. PMID- 3854768 TI - [Homeopathy: merely a placebo effect?]. PMID- 3854769 TI - [Applied economics in hospital nursing]. PMID- 3854770 TI - [Sinha Junqueira Maternity Hospital]. PMID- 3854771 TI - [The concept of high and low risks in delivery]. PMID- 3854772 TI - [Clinical tests in obstetrics. 7. Feto-placental function tests]. PMID- 3854773 TI - ["Maternity blues" and clinical description of puerperal depression]. PMID- 3854774 TI - ["Maternity blues" and nursing of patients with puerperal depression]. PMID- 3854775 TI - [Approach to pregnant and puerperal patients through counseling]. PMID- 3854776 TI - [Standard and criteria for evaluation of maternity blues]. PMID- 3854777 TI - [Clinical study of maternity blues: a survey]. PMID- 3854778 TI - [Management of a nursing vacuum during puerperium]. PMID- 3854779 TI - [Postpartum blues; assessment and intervention]. PMID- 3854780 TI - [Definition of an obstetrical physical therapist: in interview with Ms. Elizabeth Noble]. PMID- 3854781 TI - [Childbirth and child rearing. 4. Marriage]. PMID- 3854783 TI - [Difference between evaluation and determination]. PMID- 3854782 TI - [Characteristics of neonatology]. PMID- 3854784 TI - [Nutritional guidance of obese expectant patients. A case study]. PMID- 3854785 TI - [Joint efforts of medicine and social work]. PMID- 3854786 TI - [Clinical tests in obstetrics. 8. Care of the fetus during pregnancy]. PMID- 3854787 TI - [Current trends in indications for obstetrical surgery and expectation of midwives]. PMID- 3854789 TI - [Cesarean section and nursing planning]. PMID- 3854788 TI - [Obstetrical surgery: basis of pre- and post-operative care]. PMID- 3854790 TI - [Emergency cesarean section and the role of the midwife]. PMID- 3854791 TI - [The patient who has undergone cesarean section and the care of her infant]. PMID- 3854792 TI - [Basic rules and routines in neonatology]. PMID- 3854793 TI - [A study on the time required in delivery]. PMID- 3854794 TI - [Changes in midwifery practice. 7. Responses to the legislation concerning public health nursing, midwifery, and nursing. 3]. PMID- 3854795 TI - [Childbirth and child rearing. 5. Signs of pregnancy]. PMID- 3854797 TI - [Reliability and validity]. PMID- 3854796 TI - [Management of an obese expectant patient with special references to dietary instructions]. PMID- 3854798 TI - [Pregnant women and table salt. (1). Appropriate use of salt and flavors]. PMID- 3854799 TI - [Functions of medical social workers]. PMID- 3854800 TI - [Gestational age and the concept of NST (non-stress test), fetal heart monitoring]. PMID- 3854801 TI - [Clinical tests in obstetrics. 9. Fetal care during delivery. (1). Monitoring devices used during delivery]. PMID- 3854802 TI - [Psychiatric disorders during puerperium]. PMID- 3854803 TI - [Nursing of a patient with psychiatric disorder during puerperium. A case study]. PMID- 3854804 TI - [Observation of psychiatric symptoms following delivery]. PMID- 3854805 TI - [Description of puerperal depression]. PMID- 3854806 TI - [A post-delivery program to prevent recurrence of mental disturbances in pregnant patients with past history of mental disorders]. PMID- 3854807 TI - [Clinical description of puerperal psychoses. Approach to the family members: assistance extended to new mothers during puerperium]. PMID- 3854809 TI - [Routine use of episiotomy and its problems]. PMID- 3854808 TI - [Intracranial hemorrhage in premature infants]. PMID- 3854810 TI - [Assistance necessary for continuation of breast feeding]. PMID- 3854811 TI - [Encounter with childbirth in a sitting position]. PMID- 3854812 TI - [Physiological adaptation immediately after birth and resuscitation technics]. PMID- 3854813 TI - [Childbirth and child rearing. 6. The abdominal band worn by expectant women for support]. PMID- 3854814 TI - [Problems in computing the reproductive period from menstruation]. PMID- 3854815 TI - [The definition of the mean]. PMID- 3854816 TI - [Pregnant women and table salt. 2. Habituation to a low-salt diet]. PMID- 3854817 TI - [The "rational" and "irrational" nature of medicine]. PMID- 3854818 TI - [Early diagnosis of premature separation of the placenta in the normal position]. PMID- 3854819 TI - Nursing and economics. PMID- 3854820 TI - Health for all: nurses lead the way. PMID- 3854822 TI - Economics of nursing and the effects of economics on nursing. PMID- 3854821 TI - Nursing, health care and economics. PMID- 3854823 TI - [Urinary kallikrein excretion in healthy children at different ages]. PMID- 3854824 TI - [Educational objectives applied to nursing]. PMID- 3854825 TI - [The child's creative and psychographic expression. A study of the different stages of a child]. PMID- 3854826 TI - [Important aspects in the use of drugs]. PMID- 3854827 TI - [Nursing care in acute myocardial infarct. 10 years of work in an intensive care unit]. PMID- 3854828 TI - [Management of the celiac child. The participation of the health team]. PMID- 3854829 TI - [Nursing care in hepatonecrosis]. PMID- 3854830 TI - [Thank you by Professor Carlos da Silva Lacaz]. PMID- 3854831 TI - [Selection of candidates to specialization courses]. PMID- 3854832 TI - [Proposal for the teaching of public health nurses at the undergraduate level]. PMID- 3854833 TI - [Psychiatric nursing and the multiprofessional team]. PMID- 3854834 TI - [Teaching of the nursing care plan in the discipline of medico-surgical nursing in the School of Nursing of the Sao Paulo University]. PMID- 3854835 TI - [Characteristics of the training of students in the nursing laboratory]. PMID- 3854836 TI - [Rooming-in experience with a hospitalized child: feelings, needs and expectations by the accompanying mothers]. PMID- 3854837 TI - [Primary health care in INAMPS (National Institute for Preventive Medical Care) in Sao Paulo and Rio de Janeiro--nurse's contribution]. PMID- 3854838 TI - [Follow-up of the graduate in nursing]. PMID- 3854839 TI - [The toy: a road to understanding the hospitalized child]. PMID- 3854840 TI - [Nursing care for the premature infant: some basic procedures]. PMID- 3854841 TI - [Project G.O.B.I. (growth, oral rehydration, breast feeding, immunization)--a proposal of care for the institutionalized child]. PMID- 3854842 TI - [Pediatric nursing course I in the School of Nursing of the University of Sao Paulo]. PMID- 3854843 TI - [How the hospitalized patient perceives the environment offered him by the hospital]. PMID- 3854844 TI - [Effect of the factors generating satisfaction and dissatisfaction in the motivation of nurses in the work environment. A preliminary note]. PMID- 3854845 TI - [Fetal care at delivery (2). Fetoscopy and the fetal blood]. PMID- 3854846 TI - [Maternal and infant care during the 2 hours following delivery]. PMID- 3854847 TI - [During the 2 hours following delivery: observation and assessment of the infant]. PMID- 3854848 TI - [During the 2 hours following delivery: various changes in the mother and infant]. PMID- 3854849 TI - [Assistance for the woman who is to become a mother: with special reference to stage 4 in delivery]. PMID- 3854850 TI - [International comparison of midwifery education and professional practice of midwifery. (1)]. PMID- 3854851 TI - [Respiratory physiology of the newborn infant (1)]. PMID- 3854853 TI - [Changes in the professional practice of midwifery. 9. Re-affirmation and the process of legislation of the law concerning public health nursing, midwifery, and nursing]. PMID- 3854852 TI - [On childbirth and child care. 7. Work and exercises for the pregnant women]. PMID- 3854854 TI - [High risk parenting: assessment tools (1). Assessment of maternal behavior]. PMID- 3854855 TI - [Terminology used describing the fetal head position during labor]. PMID- 3854856 TI - [Educational evaluation: standard deviation. 1]. PMID- 3854857 TI - [Iron deficiency anemia and diet]. PMID- 3854858 TI - [Interactions between the counselor and the pregnant client]. PMID- 3854859 TI - [Melena of the newborn]. PMID- 3854860 TI - [My method in removing a ring from a swollen finger]. PMID- 3854862 TI - [Lipids and their use in the diet (1)]. PMID- 3854861 TI - [Educational evaluation. The standard deviation--2]. PMID- 3854863 TI - [Pregnancy and induced abortion among teenagers]. PMID- 3854864 TI - [Training in resuscitation of the asphyxiated newborn infant]. PMID- 3854865 TI - [The importance of breast feeding]. PMID- 3854866 TI - [Education of active midwives: my theory in clinical training]. PMID- 3854867 TI - [International comparison of midwifery education and professional practice of midwifery (2)]. PMID- 3854868 TI - [High risk parenting: assessment tools. Assessment of paternal behaviors]. PMID- 3854869 TI - [Discussion with the leaders of the "La Leche League International"]. PMID- 3854871 TI - [My experience in childbirth. Home birthing using the Mitsumori method (a modified Lamaze method)]. PMID- 3854870 TI - [Lessons from predecessors in the midwifery profession. Ms. Chitori Toyomura. Interview by M. Kumazawa]. PMID- 3854872 TI - [On childbirth and child rearing. 8. Exchange among pregnant women]. PMID- 3854873 TI - [Respiration physiology of the newborn (2)]. PMID- 3854874 TI - [Is primary nursing a method or a theory?]. PMID- 3854875 TI - [Re-evaluation of the nursing assignment system: obstetric nursing in case studies]. PMID- 3854876 TI - [Continuing nursing in maternal and child health activities]. PMID- 3854877 TI - [Discussion: the present and future of maternal and child nursing services, with special reference to continued nursing]. PMID- 3854878 TI - [International comparison of the midwifery education and professional practice of midwifery (3)]. PMID- 3854880 TI - [On childbirth and child rearing. 9. The pregnant woman and her diet]. PMID- 3854879 TI - [Circulatory physiology of the newborn (1)]. PMID- 3854881 TI - [Pregnancy and drugs: are all drugs harmful to the fetus?]. PMID- 3854882 TI - [High risk parenting: assessment tools (3). Assessment of child behavior]. PMID- 3854883 TI - [A delivery posture with the patient on her hands and knees]. PMID- 3854884 TI - [Educational evaluation. The standard deviation. 3. The deviation value]. PMID- 3854886 TI - [The counselor's response to the emotional conflict of the client]. PMID- 3854885 TI - [Lipids: their use in the diet (2). Processed food]. PMID- 3854887 TI - [Stress suffered by the infant during birth]. PMID- 3854888 TI - Older women: family and community supports. Issues: the older woman alone--mental health of older women. PMID- 3854889 TI - Quality assurance: a look at the concept. PMID- 3854890 TI - Sexually transmitted diseases in Kenya. PMID- 3854891 TI - Nurses lead the way. PMID- 3854892 TI - Living wills: personal and professional perspectives. Death at a New York hospital. PMID- 3854893 TI - The problem of civil commitment: improving policy by generating data. PMID- 3854895 TI - An essay on commitment and the emergency room: implications for the delivery of mental health services. PMID- 3854894 TI - The impact of broadened civil commitment laws on length of stay in a state mental hospital. PMID- 3854896 TI - [Determination of the efficacy of courses for the Baccalaureate in Nursing at the Instituto Superior de Ciencias Medicas of Havana, 1982]. PMID- 3854897 TI - [Graphic method for the early detection of hepatic coma]. PMID- 3854898 TI - [Parenteral fluid therapy of the burned child (the Brooke method updated)]. PMID- 3854899 TI - [Nursing care. Coma in childhood in a therapy unit]. PMID- 3854900 TI - [Application of the Cuban prognostic classification to the burned child]. PMID- 3854901 TI - [Endoscopic polypectomy in pediatrics. Nursing care]. PMID- 3854902 TI - [Pediatric colonoscopy. The importance of the nurse's functions]. PMID- 3854903 TI - [Important aspects of the use of disinfectant solutions]. PMID- 3854904 TI - Faculty practice in action. PMID- 3854905 TI - Joint or shared appointments. Clinical nurse specialist practice in an acute care setting. PMID- 3854906 TI - The reintegration of a nurse. PMID- 3854907 TI - Nursing practice in action: diary of a casualty. PMID- 3854908 TI - Experiment in role restructuring toward practice. Introduction. PMID- 3854909 TI - Experiment in role restructuring toward practice: the Robert Wood Johnson Nurse Faculty Fellowships Program revisited. PMID- 3854910 TI - Experiment in role restructuring toward practice: evaluation of the fellowship experience and its impact on roles. PMID- 3854911 TI - Response to "experiment in role restructuring toward practice". PMID- 3854913 TI - Response to "Institutionalizing practice: historical and future perspectives". PMID- 3854912 TI - Compensation of faculty in combined roles. PMID- 3854914 TI - Clinical research and the academic health center. PMID- 3854915 TI - Practice in action: clinical research. PMID- 3854916 TI - Employed for research in the clinical setting. PMID- 3854917 TI - Nurse practice centers. Faculty practice in action: a nurse practice center. PMID- 3854918 TI - Faculty practice: a community-linked model. PMID- 3854919 TI - Nurse practice centers: ingredients of success. PMID- 3854921 TI - Rituals that integrate nursing practice, education, and research. PMID- 3854922 TI - Faculty practice in action. Multidisciplinary perspectives. Faculty practice in medicine: what it should be and what it is. PMID- 3854920 TI - Response to "Institutionalizing practice: historical and future perspectives". PMID- 3854923 TI - Defining faculty practice: a look at theory-practice relationships. PMID- 3854924 TI - Faculty as clinicians. Faculty practice admits constraints. PMID- 3854925 TI - The integrated role of practitioner faculty. PMID- 3854926 TI - Faculty practice in an urban academic community. PMID- 3854927 TI - Clinicians as faculty. Clinical preceptors communicating knowledge in clinical practice. PMID- 3854928 TI - The clinical nurse specialist: where the rubber meets the road. PMID- 3854929 TI - The clinical nurse specialist's faculty role. PMID- 3854930 TI - [Trial of the efficacy of a 1.5 percent sodium hypochlorite solution with 10,000 ppm of chlorine for sterilizing inhalation therapy material]. PMID- 3854931 TI - [The teaching of history in the education of the nurse]. PMID- 3854932 TI - [Technical procedures and standards of a human milk bank and information center on breast feeding]. PMID- 3854933 TI - [Organizational policy of the nursing services of teaching hospitals]. PMID- 3854934 TI - [Costs of care and nursing in a teaching hospital]. PMID- 3854935 TI - [Primary care public health center for the cleft lip-cleft palate patient]. PMID- 3854936 TI - [The technical assistance center--TAC/UFF--its role in the technical and administrative modernization of teaching hospitals. Universidade Federal Fluminense]. PMID- 3854938 TI - [Legal responsibility of the nurse]. PMID- 3854937 TI - [Teaching of the introduction to nursing science and the fundamentals of nursing in an integrated curriculum--the experience of the Ana Neri School of Nursing of the Federal University of Rio de Janeiro]. PMID- 3854939 TI - [New approaches in the teaching of basic nursing: instructional experience in the teaching of professional ethics]. PMID- 3854940 TI - [Organizational policy of the nursing services of teaching hospitals]. PMID- 3854941 TI - [Nurses of teaching hospitals--a contribution to the debate]. PMID- 3854942 TI - Nursing in the Zambia Flying Doctor Service. PMID- 3854943 TI - Zambia Consolidated Copper Mines Ltd. Luanshya Division. PMID- 3854944 TI - Care study. PMID- 3854945 TI - A trip to Solwezi. PMID- 3854946 TI - The direction of nursing in Zambia: where are we heading to? PMID- 3854947 TI - Kaposi's sarcoma patient. PMID- 3854949 TI - In and out of the garbage can: a model of faculty decision making. PMID- 3854948 TI - Mecillinam--an in-vitro evaluation of antibacterial action against 'coliform' isolates from urine. PMID- 3854950 TI - Nursing research and philosophy: a delicate balance. PMID- 3854951 TI - A team approach to nursing research. AB - The study of the relationship of handedness to the laterality of breast cancer in women is intriguing. Results may affect facets of breast cancer diagnosis and therapy. Maybe not in same way as the discovery of the relationship of high oxygen concentrations to the development of blindness in premature infants, but the study may identify women at higher risk and provide new insights to scientists studying the pathophysiology of breast oncogenesis. It is the belief of the authors that laterality research is one of the fields that could easily lend itself to investigation by large numbers of nurses in hospitals across the country if a national organization became involved in it. If nursing is to be successful in its quest for recognition as one of the professions making a serious contribution to theory, it must mobilize its forces. Nursing, recognized as the largest single health profession in the United States, has great potential for accomplishment if the talent of every member of the profession is recognized and utilized in efforts to build up the science of nursing. PMID- 3854952 TI - What causes hospital nurses to unionize? PMID- 3854953 TI - "One's own place": a case study on territorial behavior. PMID- 3854954 TI - Caring for parents in crisis. PMID- 3854955 TI - The employment of part-time nurses in a competitive health care environment. PMID- 3854956 TI - Man: an axiological analysis from a Christian perspective. PMID- 3854957 TI - The concept of health. PMID- 3854959 TI - Conceptual approach to teaching nursing. PMID- 3854958 TI - Conceptual approach to teaching psychiatric nursing. PMID- 3854960 TI - Developing concepts and conceptual frameworks in nursing. PMID- 3854962 TI - Nursing care of the patient with non-Hodgkin's lymphoma: prevention of pneumonia associated with combination chemotherapy. PMID- 3854961 TI - Rationale, development, and evaluation of a chemotherapy certification course for nurses. PMID- 3854963 TI - Changes in cancer-related knowledge and attitudes: one graduate curriculum's experience. PMID- 3854964 TI - Attitude of patients living in Egypt about cancer and its treatment. PMID- 3854965 TI - The family cancer experience. PMID- 3854966 TI - Cancer nursing and the law. Screening medical malpractice cases. PMID- 3854967 TI - Implementation: we can weekend in the rural setting. PMID- 3854968 TI - An agenda for cancer prevention in nursing practice. PMID- 3854969 TI - Cancer nursing and the law. The theory of a medical malpractice case. PMID- 3854970 TI - The Center for Nursing Research. PMID- 3854971 TI - The dean's research support function and minimizing "performance gap". PMID- 3854972 TI - Thirty seconds, thirty words, or thirty years. PMID- 3854973 TI - International students in the United States. PMID- 3854974 TI - Moral/ethical choices: sensory overload. PMID- 3854975 TI - The role of the nursing administrators in the facilitation of research. PMID- 3854976 TI - Restructuring the health care system: the role of the professional nurse. PMID- 3854977 TI - Comparable worth: implications for nursing. PMID- 3854978 TI - Faculty mobility in baccalaureate and higher degree nursing programs in Research I and II universities. PMID- 3854979 TI - Impact of nursing research on public policy: an examination of ANA research priority statements. PMID- 3854980 TI - An argument for the preparation of academic administrators by nursing. PMID- 3854981 TI - Professional nursing personnel: data-based policy formulation. PMID- 3854982 TI - Generic baccalaureate nursing programs: description of administrative structure and student recruitment practices. PMID- 3854983 TI - Out of the past--into the future. PMID- 3854984 TI - Bioethical issues in professional practice. PMID- 3854985 TI - Comparable worth: a concept worth fighting for. PMID- 3854987 TI - U.S. nurse consultants in the international marketplace. PMID- 3854986 TI - The colleague relationship. PMID- 3854988 TI - Legal and ethical issues. Which will it be: confidential or open? PMID- 3854989 TI - What would you do if you didn't chair the meeting of the faculty organization? PMID- 3854990 TI - Unionization for nurses: an issue for the 1980s. PMID- 3854991 TI - Studies on the locus of nursing research activities at the national level. PMID- 3854992 TI - Complexities and clarity in nurse-client and nurse-patient relationships. PMID- 3854993 TI - A research tool for measuring perceptions of clinical decision making. PMID- 3854994 TI - Involvement of nursing students in unethical classroom and clinical behaviors. PMID- 3854995 TI - Classics from our heritage. A brave new nursing world: exercising options for the future. PMID- 3854997 TI - Why not a nurse as a CEO? PMID- 3854996 TI - Shall the twain meet? Liberal education and nursing education. PMID- 3854998 TI - Thoughts on the whats, hows, and whys of faculty practice. PMID- 3854999 TI - Nurse Training Act. PMID- 3855000 TI - Promoting research among baccalaureate program faculty members: a success story. PMID- 3855001 TI - Becoming a faculty member. PMID- 3855002 TI - The other side of the pond: news of nursing in the United Kingdom. PMID- 3855003 TI - Malpractice: don't let the chips fall where they may. PMID- 3855004 TI - Use of theory and cognitive activities as stress reduction strategies. PMID- 3855005 TI - A phenomenological approach to understanding the process of deaning. PMID- 3855006 TI - Multilateral collective bargaining and the health care industry: implications for nursing. PMID- 3855008 TI - New directions in higher education: a review of trends. PMID- 3855007 TI - The competition approach to understanding occupational autonomy: expansion and control of nursing service. PMID- 3855010 TI - Tracking the Master's candidates in nursing administration with dBASE III. PMID- 3855009 TI - Evaluation of an applicant review process. PMID- 3855012 TI - Classics from our heritage. The nature of the university or college and the mission of the school of nursing. PMID- 3855011 TI - The nursing research review process in a clinical setting. PMID- 3855013 TI - Are we giving away the store to home health agencies? PMID- 3855014 TI - Legal and ethical issues. Documentation: a nurse's best defense. PMID- 3855015 TI - The collegial relationship between social work and nursing. PMID- 3855016 TI - The process of advanced nursing practice. PMID- 3855017 TI - National Alliance of Nurse Practitioners. PMID- 3855018 TI - A research center in a college of nursing: what is it? PMID- 3855019 TI - A world view on nurses as health educators. PMID- 3855020 TI - Women in health: victims or victors? PMID- 3855021 TI - Gerontological nursing: movement towards a paradigm state. PMID- 3855022 TI - The fiscal status of nursing education programs in the United States. PMID- 3855023 TI - Power and powerlessness in hospital nursing departments. PMID- 3855024 TI - The value-added approach to the measurement of educational quality. PMID- 3855025 TI - Using admission data to predict success on the NLEX-RN in a baccalaureate program. PMID- 3855027 TI - Classics from our heritage. The nature and characteristics of professional education for nursing. PMID- 3855026 TI - Generic baccalaureate nursing programs: survey of enrollment, administrative structure/funding, faculty teaching/practice roles, and selected curriculum trends. PMID- 3855029 TI - [Nursing in clinical setting: nursing and phenomenology]. PMID- 3855028 TI - Classics from our heritage. The need for legislation for licensure to practice professional nursing. PMID- 3855030 TI - [Visiting nursing service in U.S.A]. PMID- 3855031 TI - [socialization theory and entry into the practice of nursing]. PMID- 3855032 TI - [Evaluation of nursing administration by systematic thinking]. PMID- 3855033 TI - [Movie--what's the use of it?]. PMID- 3855034 TI - [Consultation services in nursing]. PMID- 3855036 TI - [Verbs in our life: hide and appear]. PMID- 3855035 TI - [Consultation services: round-table talk]. PMID- 3855037 TI - [Nursing and counseling: case study]. PMID- 3855039 TI - [Visiting nursing service in U.S.A]. PMID- 3855038 TI - [Medical topics: vincristine toxicosis; cat scratch disease]. PMID- 3855040 TI - [Nurses in clinical settings: understanding of my patients]. PMID- 3855041 TI - [Evaluation of nursing administration by systemic thinking]. PMID- 3855042 TI - [Patient and family participation in nursing. Role of family members in visiting nursing service]. PMID- 3855043 TI - [Intermediate facilities for the aged people, managed by nursing personnel- Germany]. PMID- 3855044 TI - [Poem writing is a good brain exercise in your old age]. PMID- 3855046 TI - [Patient and family participation in nursing. Family members prove to be excellent care providers]. PMID- 3855045 TI - [Patient and family participation in nursing. Promoting self-help in discharge planning--urination control]. PMID- 3855047 TI - [Patient and family participation in nursing. As a partner of diabetic patient]. PMID- 3855048 TI - [Patient and family participation in nursing. Patient and family participate in nursing]. PMID- 3855049 TI - [Patient and family participation in nursing. Discharge planning for neurosurgical patients--sharing goals with family members]. PMID- 3855050 TI - [Patient and family participation in nursing. Cervical vertebral injury patients- planning discharge with patients and family members]. PMID- 3855051 TI - ["And" instead of "either-or" or the fallacy of false opposition]. PMID- 3855052 TI - [Verbs in our life: purchase a tomb]. PMID- 3855053 TI - [Nursing and counseling]. PMID- 3855055 TI - [The viral etiology of acquired immunodeficiency syndrome]. PMID- 3855054 TI - [Medical topics: bischloromethyl ether and lung cancer]. PMID- 3855056 TI - A perspective on why nurses should earn doctorates in nursing. PMID- 3855057 TI - Pitfalls to avoid and positive approaches in the nurse-adolescent relationship. AB - The establishment of a therapeutic nurse-adolescent relationship can be facilitated by the nurse's awareness of specific personality characteristics prominent during the adolescent period. These characteristics not only color the adolescent's behavior, but they can elict marked responses from the nurse. Nurses must, therefore, be self-aware if they are to deal with adolescents objectively and therapeutically. Positive approaches to the nurse-adolescent relationship include the establishment of a therapeutic alliance, the use of reality-based limits, and an emphasis on insight-producing communication techniques. Problem areas to be alert for are over-identification with adolescent problems, responses based on surface behaviors, and manipulation by the adolescent. Nurses must also work at decreasing non-therapeutic attitudes such as viewing the adolescent as an "enemy" to be controlled, or as a potential person to be molded according to the nurse's personal goals and aspirations. PMID- 3855058 TI - The developmental evaluation center as a clinical setting for mental health nursing students. AB - The DEC is seen as a viable option to the more traditional clinical settings used for psychiatric/mental health nursing students. Such a placement affords students the opportunities for direct involvement with individuals, families, and communities in the application of theoretical concepts within the framework of the nursing process. Ongoing client contacts over the course of the semester facilitate continuity in the implementation of intervention strategies and allow opportunities for evaluation of both short-term and long-term goals. The interdisciplinary nature of the DEC assists students in more clearly identifing their role and function as nurses within the larger health care team. Additionally, students gain first-hand experience in developing and utilizing colleagueal relationships to more effectively meet the needs of clients. Since the DEC concept is found not only in North Carolina, but throughout the U.S., it is thought that the DEC's offer a rich and rewarding alternative to the more traditional clinical placement sites. PMID- 3855059 TI - Behavioral manifestations of misguided entitlement. AB - The presence of misguided entitlement in a life must adversely affect the quality of that life, for it creates alterations within the character structure that have far-reaching consequences. Smoldering resentment, chronic anger, self centeredness, vindictiveness, and a constant feeling of being abused ultimately produce a miserable human being who, as well as being alienated from self, alienates those in the interpersonal sphere. PMID- 3855060 TI - The role of the nurse in health care delivery. PMID- 3855061 TI - Evolution of psychiatric nursing in Nigeria: concluding series. PMID- 3855063 TI - Communication in teaching and learning. PMID- 3855062 TI - Struggle for professional autonomy: concluding series. PMID- 3855064 TI - Dialysis. PMID- 3855065 TI - Clinical teaching in nursing. PMID- 3855066 TI - Patient's health and the nation's economy. PMID- 3855067 TI - Nursing and health care in the Soviet Union. PMID- 3855068 TI - Is nursing ready for the year 2000? PMID- 3855070 TI - World hunger and the arms race. PMID- 3855069 TI - Patient advocacy and the nurse: is there a conflict of interest? AB - The role of patient advocate has been mandated by law in some states, supported by the American Nurses Association and by nursing theorists. Guidelines have been published to assist the nurse as she pursues the role of patient advocate and to help her decide when she should pursue the role and when she should delegate the advocacy position. Two case studies have been presented to examine the possible conflicts arising between the rights of the patient and the duties of the nurse to society as a whole. Smith, in the final paragraph of her story concludes that: As practicing professionals in any society, we not only have a responsibility to know what we need to know to practice, but also a responsibility to act as advocates for those who cannot speak for themselves. As professionals, we carry a commitment and responsibility to all people in the community in which we practice (p. 625). The situation today, however, continues to present the nurse as patient advocate with an assigned responsibility but without the designated authority to fulfill that responsibility. There is a conflict of interest between the duty to act as the client's advocate and the rights of the nurse to practice nursing in a manner that protects the interests of the nurse, the nursing profession, and the employing institution. Autonomy for the nurse acting as patient advocate remains a theory. PMID- 3855071 TI - The sexual dimension of patient care. PMID- 3855072 TI - Nursing care of patients with an altered body image due to multiple sclerosis. PMID- 3855073 TI - [The structure of knowledge in nursing]. PMID- 3855074 TI - [Teaching and practice of motor and verbal communication rehabilitation in general hospitals. A comparative study between teaching and service nurses]. PMID- 3855075 TI - [Determining the number of nursing personnel in clinical medical units. An exploratory study]. PMID- 3855077 TI - [Subsidies for a program of training university researchers]. PMID- 3855076 TI - [Perception of the multidisciplinary health team in regard to the nurse's performance in community health]. PMID- 3855078 TI - [Report on our experience in teaching the class Nursing Care for the Adult I in a rural area]. PMID- 3855079 TI - [Analysis and interpretation of gasometric, hematological and biochemical determinations of blood and urine]. PMID- 3855081 TI - [Systematic focus applied to the mental health education of adolescents]. PMID- 3855080 TI - [The question of democracy in class and council entities]. PMID- 3855082 TI - [Factors determining the efficacy of disinfectants]. PMID- 3855084 TI - [Axillary temperature in the newborn infant evaluated with a clinical thermometer left in place for different periods of time]. PMID- 3855083 TI - [Recreational activities in the community of Sao Jose do Murialdo]. PMID- 3855085 TI - [The medical history in nursing: in what way do physicians, nurses and patients perceive its importance?]. PMID- 3855086 TI - [Analysis of the nursing functions in a clinical medical unit of a university hospital]. PMID- 3855087 TI - [Caring: what does it mean?]. PMID- 3855088 TI - [Study of the reference mark proposed in the curriculum plan of an undergraduate nursing course]. PMID- 3855089 TI - [The Revista Gaucha de Enfermagem--a quantitative study]. PMID- 3855090 TI - [Old age: an experimental essay]. PMID- 3855091 TI - [Nursing care for the aged patient convalescing from pneumonia]. PMID- 3855092 TI - [Touch as an integrational element in the nurse-patient relationship]. PMID- 3855093 TI - [Perspectives on the molding of the nurse]. PMID- 3855094 TI - [A family's experience of prolonged illness]. PMID- 3855095 TI - [Emotional security as a basic human need--the nurse's performance in relation to the patient in an intensive care unit]. PMID- 3855096 TI - [Patient expectations and needs in the postoperative period of heart surgery. An assessment of a practical approach]. PMID- 3855097 TI - [Retrospective on publications of research done on nursing education--1947-1981]. PMID- 3855098 TI - [Nursing care and the administration of nursing services: the functional ambiguity of the nurse]. PMID- 3855099 TI - [Nasogastric intubation: a simple technic?]. PMID- 3855100 TI - [Feeding from zero to 1 year of age--a challenge for health professionals]. PMID- 3855101 TI - [The representations of unmarried pregnant adolescents regarding their psychosocial problems]. PMID- 3855102 TI - [What do young people know about sexually transmitted diseases?]. PMID- 3855103 TI - [Pierre Robin anomaly--care]. PMID- 3855104 TI - [Prevention of disabilities in Hansen's disease: the reality in a health center]. PMID- 3855105 TI - [Phytotherapy and homeopathy as alternative medical practices]. PMID- 3855106 TI - [Ethical implications in the nursing care for the critical patient]. PMID- 3855107 TI - [The family as a service unit for nursing care back to health]. PMID- 3855108 TI - [Education for health of a group of adolescents: a report on the experience of nursing students]. PMID- 3855109 TI - [The role of neutrophils in the pathogenesis of chronic pulmonary emphysema]. PMID- 3855110 TI - Health hazards in PARR. Striving for a safer work environment. PMID- 3855111 TI - Interplast in Ecuador--1984. Bridging the gap. PMID- 3855112 TI - [Disinfection of medical and surgical equipment]. PMID- 3855114 TI - Hypertensive patients.... Anesthetic care techniques emphasized. PMID- 3855113 TI - Ultrasonic percutaneous lithotripsy. A revolutionary advancement in the extraction of kidney stones. PMID- 3855116 TI - The changing role of the O.R. nurse. PMID- 3855115 TI - Guidelines for establishing an institutional laser program. PMID- 3855118 TI - Planning an operating room suite. Part 1. PMID- 3855117 TI - [Separation of Siamese twins. Point of view of an operating room nurse]. PMID- 3855119 TI - No code orders and the law. PMID- 3855121 TI - Total hip arthroplasty--an overview. PMID- 3855120 TI - Rheumatoid arthritis--preventive and reconstructive surgery. PMID- 3855122 TI - Is the O.R. supervisor the captain of the ship? PMID- 3855124 TI - Anterior cruciate ligament repair and reconstruction. PMID- 3855123 TI - Oral contraceptives come of age. PMID- 3855125 TI - The anxious child with acute epiglottitis. PMID- 3855126 TI - Impracticality of consent in an emergent surgical setting. PMID- 3855127 TI - Hepatitis, who needs it? PMID- 3855128 TI - ATP-adenosine triphosphate: the answer to power. PMID- 3855129 TI - Cutting the cost of hip surgery. One hospital's money-saving procedures. PMID- 3855130 TI - Epileptics waiting for surgery. Not enough training available. PMID- 3855131 TI - Acute epiglottitis--overcoming the challenge. PMID- 3855132 TI - Hemipelvic transplantation: a nurse's perspective. PMID- 3855133 TI - Recruiting and retaining nursing personnel. PMID- 3855135 TI - Canadian hospitals lagging in infection control. PMID- 3855134 TI - Licensure or registration. PMID- 3855136 TI - Parasagittal transcallosal craniotomy. Surgical treatment of suprasellar arachnoid cysts. PMID- 3855137 TI - The effects of waste anaesthetic gases. PMID- 3855139 TI - Certification the 'C' in caring. PMID- 3855138 TI - Averting potential litigation. PMID- 3855140 TI - Esophagogastrectomy...(1) Esophageal resection. (2) Pyloroplasty. PMID- 3855141 TI - Lack of antibodies to LAV/HTLV-III in hepatitis B vaccine recipients. AB - There is no evidence up to now that the currently available plasma hepatitis B vaccine transmits the agent of AIDS. To support further the safety of this vaccine we examined 137 vaccinees for the presence of antibodies to LAV/HTLV-III. Three groups had received Merck, Sharp and Dohme hepatitis B vaccine (two groups of 25 Air Force cadets vaccinated with investigational lots and 18 multiply transfused children vaccinated with a commercial lot); another two groups (50 Air Force cadets and 19 multiply transfused) were vaccinated with two commercial lots of Institut Pasteur vaccine. Sera were collected before inoculation, 7 and 24 months later. Enzyme linked immunosorbent assay was used for the detection of antibodies to LAV/HTLV-III. Positive sera were tested again by Western Blot and Radioimmune Precipitation Assay to exclude non-specific binding. Antibodies to LAV/HTLV-III were not detected in any of the sera examined, providing evidence for safety. We believe that these data increase the acceptance of hepatitis B vaccine. PMID- 3855142 TI - [Nurses in clinical setting: the base of my clinical work]. PMID- 3855143 TI - [Visiting nursing service in U.S.A]. PMID- 3855144 TI - [Evaluation of nursing administration by systematic thinking]. PMID- 3855146 TI - [Home services for elderly citizens at home--welfare programs offered by Musashino City, Tokyo]. PMID- 3855145 TI - [Safe and comfortable town for any person at any time]. PMID- 3855147 TI - [Home service for elderly citizens at home--welfare programs offered by Musashino City, Tokyo. Roundtable talk]. PMID- 3855148 TI - [Workshop for carers of home-bound patients and elderly]. PMID- 3855150 TI - [What I learned from Wakana Ohnishi, a frontier PHN in Hokkaido]. PMID- 3855149 TI - [National Recognition Day for Nurses, U.S.A]. PMID- 3855151 TI - [Verbs in our life: stand firm]. PMID- 3855152 TI - [Nursing and counseling]. PMID- 3855153 TI - [Femoral neck fracture; a new deformity]. PMID- 3855154 TI - Isolation of measles virus in Vero cell cultures from the washed lymphocytic fraction of peripheral blood. PMID- 3855155 TI - Lung surfactant. PMID- 3855156 TI - Whither midwifery education? The City University, London Friday, July 18, 1986. PMID- 3855157 TI - The student: the environment & the status. PMID- 3855158 TI - A chosen profession: direct entry training for midwives. PMID- 3855159 TI - "From the first day of the rest of your career"--continuing education of the midwife. PMID- 3855160 TI - What is a midwife? PMID- 3855161 TI - Can the midwife manager meet everyone's needs? PMID- 3855162 TI - Case study: asymptomatic ruptured uterus. PMID- 3855164 TI - Planning nursing strategies toward action/care. PMID- 3855163 TI - Midwives or maternity nurses? PMID- 3855165 TI - Implementation and evaluation of the nursing actions. PMID- 3855166 TI - Legislative process and psychiatric nursing. PMID- 3855168 TI - Care of complication of post spinal/epidural analgesia. PMID- 3855167 TI - Better patient care: a challenge. PMID- 3855169 TI - Nursing process: an approach. Assessment of client/patient towards nursing diagnosis. PMID- 3855170 TI - Bagong Silangan Nursing Clinic: an experiment in partnership approach for primary health care. PMID- 3855171 TI - A comparison of the effectiveness of the lecture and modular methods of teaching. PMID- 3855172 TI - Community health nursing--an overview. PMID- 3855174 TI - Sarcoidosis is not associated with the HTLV III virus. AB - Superficial immunological similarities between sarcoidosis and AIDS led to this radioimmunoassay survey of serum antibodies to HTLV III virus in 17 patients with active sarcoidosis, 8 with peripheral lymphadenopathy. Serum antibodies were negative in all patients with sarcoidosis. PMID- 3855173 TI - Vulnerability to stress among women with in utero diethylstilbestrol (DES) exposed daughters. AB - In utero exposure to diethylstilbestrol (DES) was initially linked to vaginal cervical cancer and subsequently to reproductive difficulties. These unanticipated and ongoing health risks to female offspring may constitute a chronic source of stress for DES mothers. We interviewed 60 mothers of exposed daughters and 30 acquaintance controls. Two hypotheses were tested in regard to DES mothers: DES discovery and its aftermath have a direct, long-term, negative effect on psychological health and the DES experience intensifies the negative psychological effects of other adverse life circumstances. To operationalize psychological health, we measured symptoms of "demoralization" and positive health practices--the latter as a behavioral indicator of mastery and personal control. We also measured adversities that may mediate the threat posed by DES, including stressful events, medical problems, and chronic burdens. We found DES history to be associated with poorer psychological health only when mothers encountered other losses and threats to themselves and their families. We concluded that DES mothers may manifest increased vulnerability to subsequent stresses in their lives. PMID- 3855175 TI - [Clinical picture and course of intestinal infections caused by Pseudomonas aeruginosa in premature children]. PMID- 3855176 TI - [Alcohol embryopathy with symptomatic chondrodysplasia punctata. The 4th published case]. AB - We report the case of an infant with alcoholic embryopathy associated with punctate chondrodysplasia. In 1983, this syndrome was first described by Badois et al. in three children. Our report adds a fourth case and enlarges the number of symptoms occurring in alcoholic embryopathy. We are not able to answer the question whether the stippled epiphyses in our case are due to the maternal alcoholism or part of a mild form of chondrodysplasia punctata. PMID- 3855177 TI - [Detection of caffeine, theophylline and theobromine in the umbilical cord blood and breast milk]. AB - Twenty-four samples of cord blood chosen at random from premature newborns were analyzed for methylxanthines. At least one methylxanthine could be detected in 20 (83%) samples, and caffeine was present in 17 (71%). In 8 (33%) samples the serum concentration was above 15 mumol/l; above this level an effect on ventilation has been demonstrated. Of 50 samples of human milk, 48 (96%) contained at least one methylxanthine, and in 42 (84%) caffeine could be detected. In treating premature infants with caffeine or theophylline during the first days of life a possible prenatal supply has to be taken into consideration, however, a supply via human milk can be neglected. PMID- 3855178 TI - In vitro activity of five antibiotics against methicillin and gentamicin resistant Staphylococcus aureus. PMID- 3855179 TI - Hospital staff RN's: who earns what, where. PMID- 3855180 TI - The homeless: individuals and families in need. PMID- 3855181 TI - The use of planimetry for calculating the surface area of a burn wound. PMID- 3855182 TI - The beneficial effects of ascorbic acid on murine burns. PMID- 3855183 TI - Determination of silver penetration into burn eschar by atomic absorption. PMID- 3855184 TI - Para-chloro-meta-xylenol (PCMX): a new, potential topical antimicrobial agent. PMID- 3855185 TI - Synthetic burn dressings: round table discussion. PMID- 3855186 TI - Streptokinase treatment of acute arterial occlusions in burn patients (case report). PMID- 3855188 TI - A return-to-school program for the burned child. PMID- 3855187 TI - Evaluation of pediatric pain medications. PMID- 3855189 TI - Need for a burn nursing core curriculum. Part I. Survey of schools of nursing. PMID- 3855190 TI - Need for a burn nursing core curriculum. Part II. Survey of burn units. PMID- 3855191 TI - A self-instructional package: neck conformer. PMID- 3855192 TI - The immunology of injury. Part one. PMID- 3855193 TI - Circulating mediators in thermal injuries: isolation and characterization of a burn injury-induced immunosuppressive serum component. PMID- 3855195 TI - Clinical/experimental research: essential to burn care of the future? PMID- 3855194 TI - Fibronectin: possible role in host defense processes after injury. PMID- 3855196 TI - The effect of lipid infusion on pulmonary function in burn patients with inhalation injury. PMID- 3855197 TI - Influence of hydrotherapy and antiseptic agents on burn wound bacterial contamination. PMID- 3855198 TI - The role of the helicopter in management of the burned patient. PMID- 3855199 TI - Electric burn assessment: use of creatine kinase fractionation. PMID- 3855200 TI - Effect of plasma exchange therapy on circulating fibronectin in burned patients. PMID- 3855201 TI - Perforation of the transverse colon in a patient with a major thermal injury. PMID- 3855202 TI - Burn patient cooperation in physical and occupational therapy. PMID- 3855203 TI - The immunology of injury. Part two. PMID- 3855204 TI - Kinetics of immune depression in burned rats: the sixth day phenomenon. PMID- 3855205 TI - Hormonal changes following burns: an overview with consideration of the pineal gland. PMID- 3855206 TI - The endocrine response after burns: its possible correlations with the immunology of burns. PMID- 3855207 TI - Infant and/or toddler stimulation program for pediatric burn patients. PMID- 3855208 TI - Ten-year profile of 1,271 burn patients. PMID- 3855209 TI - Restoration of normal function involving herniated quadriceps muscles following electric burn. PMID- 3855210 TI - Major burns resulting from scalds: the California Burn Registry experience. PMID- 3855211 TI - Obstructive sleep apnea: a complication of burns to the head and neck in children. PMID- 3855212 TI - Immunoenhancement in the thermally injured guinea pig. PMID- 3855213 TI - Abstracts to sell. PMID- 3855214 TI - Stable net slings for upper extremity elevation. PMID- 3855215 TI - Interrupted debridement. PMID- 3855216 TI - Rapid, simple, and inexpensive method to rule out bacterial invasion of fat subjacent to full-thickness burn eschar. PMID- 3855217 TI - Do changes in burn size affect measured energy expenditures? PMID- 3855218 TI - Antibiotic prophylaxis in patients undergoing burn wound excision. PMID- 3855219 TI - Burn sexuality questionnaire. PMID- 3855220 TI - Reconstruction of the burned ear in the pediatric patient. PMID- 3855221 TI - Cost containment: a contribution of aggressive nutritional support in burn patients. PMID- 3855222 TI - Early excision: a financial assessment. PMID- 3855223 TI - Prediction of operating room costs. PMID- 3855224 TI - Thromboxane inhibitors for the prevention of progressive dermal ischemia due to the thermal injury. PMID- 3855225 TI - Circulating fibronectin depletion in burned patients: relationship to development of infection and prognostic value. PMID- 3855226 TI - Thermal injury in the elderly: incidence and cause. PMID- 3855227 TI - Pulmonary edema and compliance changes following smoke inhalation. PMID- 3855228 TI - Burn injury rehabilitation: hand dyskinesia and finger pain--treatment by orthokinetic orthoses. PMID- 3855229 TI - Alternaria burn wound sepsis. PMID- 3855231 TI - Physical and occupational therapy burn unit protocol--benefits and uses. PMID- 3855230 TI - Evidence that use of a silicone gel sheet increases range of motion over burn wound contractures. PMID- 3855232 TI - A successful burn prevention program in elementary schools. PMID- 3855233 TI - Evaluation of a contract model for professional nursing practice. AB - Job dissatisfaction and high turnover among nurses may be reduced by a new "contract" strategy which gives nurses more control over their working conditions. PMID- 3855234 TI - Pharmacokinetics of a new antihypertensive pyrrolyl pyridazinamine (MDL-899) in the rat and the dog. AB - The pharmacokinetics of N-(2,5-dimethyl-1H-pyrrol-1-yl)-6-(4-morpholinyl)-3 pyridazinamine hydrochloride (MDL-899), a new antihypertensive agent, was studied in rats and dogs. The 14C-labelled compound was synthesized by a microscale procedure with 45% chemical yield and 98% radiochemical purity. In both animal species, MDL-899 was rapidly absorbed from the gastro-intestinal tract, achieving peak plasma levels in 0.5-2 h. The ratio between the plasma concentrations of 14C and of unchanged MDL-899 indicates rapid metabolic transformation and, especially in the rat, a marked first-pass effect. MDL-899 binds to serum proteins with a very low affinity and rapidly enters the tissue compartment, with large distribution volumes (1.6 l/kg rat, 2.0 l/kg dog). Target tissues in the rat were the liver, kidneys, adrenals, lungs, ovaries, uterus and the arterial walls, which constitute a deep-compartment. The plasma half-life of unchanged MDL-899 was 0.5 h in the rat and 1.4 h in the dog, while the terminal half-lives for total radioactivity were much longer (two elimination phases). Within the range of doses tested (1 and 40 mg/kg) there is evidence of non-linear kinetics (dog). The plasma kinetics profiles of both MDL-899 and 14C were the same in both males and females (rat). In both rats and dogs, elimination of the test dose was preferentially via the kidneys, as metabolites. The time course of the pharmacological response seems to be correlated to the kinetics of the active species in deep-compartment(s) rather than to the plasma concentration. PMID- 3855235 TI - Labetalol: an alpha- and beta-adrenergic receptor blocker. PMID- 3855236 TI - Use of a physician consultant in a primary care nursing practice. AB - This article describes a study of the nature of consultation requests made to a physician consultant by nurse practitioners in an urban university-affiliated ambulatory nursing practice. During a 50-week period, 1,504 client encounters resulted in 225 consultations, an average consultation rate of 15 percent. The types of consultation requests, the medical specialty to which the content of the request related and the outcomes of the consultations were recorded in a consultation log. Knowledge of the pattern and nature of consultation needs has multiple benefits. Careful study of practice needs may assist in determining the qualifications of a prospective consultant and the amount of time required for on site consultation. Such a study may provide insight into the types of problems seen in the practice and identify areas of need for continuing education and protocol development. The consultation process enhances continuity of care, while knowledge of practice needs for consultation may lead to more efficient, cost effective health care. PMID- 3855237 TI - Health care in Africa. PMID- 3855238 TI - Acupressure: an overview of theory and application. AB - Treatment of pain is common to all nurse practitioners' practices. One treatment method appropriate for use by the nurse practitioner is acupressure. Upon reviewing the professional literature, a paucity of information on acupressure was discovered. This article uses acupuncture theory and research to provide a theoretical basis for the use and study of acupressure. A description of how to locate and stimulate an acupoint useful for the treatment of headaches resulting from shoulder muscle tension is presented. PMID- 3855239 TI - [Central nervous system complications of non-Hodgkin's disease]. PMID- 3855240 TI - Activation of the c-K-ras oncogene in a human pancreas carcinoma. AB - The human pancreas carcinoma cell line T3M-4 contains activated c-Kirsten (K)-ras oncogene detectable by the DNA-mediated gene transfer technique using NIH/3T3 cells. DNA fragments containing coding lesions have been cloned, and nucleotide sequence analysis suggests that the T3M-4 oncogene has been activated by a single nucleotide transition from A to C in the second exon, which results in the substitution of histidine for glutamine in coden 61 of the predicted amino acid sequence. The quantity analysis of c-K-ras oncogene in the DNA and RNA of T3M-4 cells revealed that the c-K-ras gene was amplified and overexpressed in T3M-4 cells. These findings indicate that the T3M-4 c-K-ras oncogene is activated by different mutational events. PMID- 3855241 TI - The complete sequence of the chicken alpha-cardiac actin gene: a highly conserved vertebrate gene. AB - We sequenced the entire chicken alpha-cardiac actin gene. A single intron was positioned 20 bp upstream from the initiation ATG codon in the 5' non-coding region while the coding region was interrupted by 5 introns at amino acid positions 41/42, 150, 204, 267, and 327/328. Sequencing allowed the first comparison of the alpha-cardiac and alpha-skeletal actin transcriptional promoters. These highly G+C rich promoters share two regions of homology which are found at position -134 (10 bp) and -296 (12 bp) in the alpha-cardiac actin promoter. A smaller 9 bp motif (CCGCGCCGG) homologous to the -134 sequence was detected before, between and after the TATA and CAAT boxes of the alpha-cardiac actin gene. The polyadenylation signal (AATAAA) was located 156 bp downstream from the translation termination codon. The complete length of the alpha-cardiac actin mRNA excluding the poly A tail is 1370 nucleotides. The 3' noncoding transcribed portion of the chicken alpha-cardiac actin gene was found to be extraordinarily conserved when compared to the human and rat alpha-cardiac actin mRNA sequences. PMID- 3855242 TI - DNA sequence comparison between two tissue-specific variants of the autonomous parvovirus, minute virus of mice. AB - We have determined the complete nucleotide sequence of the DNA of the immunosuppressive variant of the parvovirus minute virus of mice (MVMi) and compared it to the published sequence (12) of the fibroblast-specific strain (MVMp). We have found 175 differences between the two viruses, most of which affect single nucleotides. Despite these differences, the genomic organization of MVMp and MVMi is identical. There are 29 amino-acid changes between the putative viral gene products of MVMi and MVMp, 16 of which are conservative. We discuss the possibility that the differential tissue-specificity of the two variants is linked to differences within the non-transcribed region near the 5' end of the viral genomes. PMID- 3855243 TI - Primary structure of bovine thyroglobulin deduced from the sequence of its 8,431 base complementary DNA. AB - In mammals, an adequate supply of thyroid hormones is essential for normal growth and neurological development. The biosynthesis of thyroid hormones involves an iodinated precursor protein, thyroglobulin, which may be considered an extreme example of a pro-hormone. Thyroglobulin is a dimeric glycoprotein of relative molecular mass (Mr) 660,000 (660K), which is secreted by the thyrocyte and stored in the lumen of the thyroid follicle. The hormonogenic reaction is extracellular, and involves iodination of tyrosyl residues of thyroglobulin and the intramolecular coupling of a subset of these into thyroxine (T4) and triiodothyronine (T3), which remain part of the polypeptide chain. Secretion of hormones results from the endocytosis of thyroglobulin followed by its complete hydrolysis in lysosomes. Considering that the maximum yield of hormones is approximately 6-8 per 660K protein, the whole process is apparently wasteful. However, the efficiency of thyroglobulin as a thyroid hormone precursor is extremely high when the supply of iodine is short; in such conditions, almost all the iodine incorporated is found in iodothyronine. Hence it is suggested that the thyroglobulin structure has evolved to allow for the preferential and efficient iodination and coupling of the hormonogenic tyrosines. Here we report the complete primary structure of bovine thyroglobulin, derived from the sequence of its 8,431-base-pair complementary DNA. The 2,769-amino-acid sequence is characterized by a pattern of imperfect repeats derived from three cysteine-rich motifs. Four hormonogenic tyrosines have been precisely localized near the amino and carboxyl ends of the protein. PMID- 3855244 TI - Noncumulative sequence changes in the hemagglutinin genes of influenza C virus isolates. AB - Sequence analysis and comparison of hemagglutinin (HA) genes of different influenza C viruses isolated between 1947 and 1983 reveals that (1) the extent of difference among the HA genes is independent of the year in which these viruses were isolated and that (2) changes in the HA genes do not appear to accumulate with time. These results suggest that epidemiologically dominant variants of influenza C viruses do not emerge successively with time and that C virus variants derived from multiple evolutionary pathways cocirculate at any one time. Thus the epidemiology of influenza C viruses differs markedly from that of influenza A viruses, which is characterized by the emergence of successive variants. Based on the nucleotide sequence data, we propose different evolutionary models for influenza A and influenza C viruses. PMID- 3855245 TI - The nucleotide sequence of a nematode vitellogenin gene. AB - The nematode, Caenorhabditis elegans, contains a family of six genes that code for vitellogenins. Here we report the complete nucleotide sequence of one of these genes, vit-5. The gene specifies a mRNA of 4869 nucleotides, including untranslated regions of 9 bases at the 5' end and 51 bases at the 3' end. Vit-5 contains four short introns totalling 218 bp. The predicted vitellogenin, yp170A, has a molecular weight of 186,430. At its N terminus it is clearly related to the vitellogenins of vertebrates. However, the vit-5-encoded protein does not contain a serine-rich sequence related to the vertebrate vitellin, phosvitin. In fact, the amino acid composition of the nematode protein is very similar to that of the vertebrate protein without phosvitin. Vit-5 has a highly asymmetric codon choice dictionary. The favored codons are different from those favored in other organisms, but are characteristic of highly expressed C. elegans genes. The strong selection against rare codons is not as great near the 5' end of the gene; rare codons are 15 times more frequent within the first 54 bp than in the next 4.8 kb. PMID- 3855246 TI - Nucleotide sequence of a cloned woodchuck hepatitis virus genome: evolutional relationship between hepadnaviruses. AB - We have determined the complete nucleotide sequence of a cloned DNA of woodchuck hepatitis virus (WHV), the most oncogenic virus among hepadnaviruses. The genome, designated WHV2, is 3,320 base pairs long and contains four major open reading frames (ORFs) coded on the same strand of nucleotide sequence as in the human hepatitis B virus (HBV) genome. Comparison of the nucleotide sequence and amino acid sequences deduced from it among the genomes of various hepadnaviruses demonstrates that each protein shows an intrinsic property in conserving its amino acid sequence. A parameter, the ratio of the number of triplets with one letter change but no amino acid substitution to the total number of triplets in which one-letter change occurred, was introduced to measure the intrinsic properties quantitatively. For each ORF, the parameter gave characteristic values in all combinations. Therefore, the relative evolutional distance between these hepadnaviruses can be measured by the amino acid substitution rate of any ORF. These comparisons suggest that (i) the difference between two WHV clones, WHV1 and WHV2, corresponds to that among clones of a HBV subtype, HBVadr, and (ii) WHV and ground squirrel hepatitis virus can be categorized in a way similar to the subgroups of HBV. PMID- 3855247 TI - Sequence analysis of the membrane protein V3 of the flavivirus West Nile virus and of its gene. AB - Flaviviruses contain a large membrane-associated protein V3, having a mol mass of about 50 kDa which is responsible for hemagglutination. We have isolated the V3 protein from the West Nile (WN) flavivirus and determined its amino-terminal amino acid sequence and amino acid sequences of fragments derived from this protein. We have also transcribed parts of the WN virus genome RNA into cDNA and cloned and sequenced this cDNA. The results of these analyses have allowed us to identify the region of the viral genome coding for the V3 protein. In this report we describe the total nucleotide sequence of the genome region coding for the WN virus V3 protein and the amino acid sequence of the V3 protein derived from these analyses. The exact carboxy terminus of the V3 protein has not been determined in these experiments. These analyses have shown that the V3 protein of WN virus does not contain an Asn-X-Ser/Thr sequence which could allow addition of N-linked carbohydrate chains to this protein. In accordance with this finding, analyses of metabolic labeling of the V3 protein using [3H]glucosamine indicate that the WN virus V3 protein is an unglycosylated protein. Together with our earlier analyses these results show that the viral structural proteins are present on the genome RNA in the order 5'-terminus-core protein (V2)-small membrane-associated protein (NV2)-large membrane-associated protein (V3) and describe the nucleotide sequences coding for all WN virus structural proteins identified so far. A hypothesis concerning the processes involved in the synthesis of all viral structural proteins and the probable orientation of these proteins relative to the endoplasmatic reticulum membrane based on the structure of these proteins is discussed. PMID- 3855248 TI - Characterization of the hamster desmin gene: expression and formation of desmin filaments in nonmuscle cells after gene transfer. AB - The structural organization of the hamster gene encoding the intermediate filament (IF) protein desmin has been determined. The gene, 6.5 kb in length, contains nine exons with a total length of 2169 nucleotides. Remarkably, the intervening sequences map at positions that fully correspond to those of the vimentin gene. The derived complete primary structure for hamster desmin (468 amino acids; 53,250 daltons) reveals striking species variations in the NH2 terminal domain of desmin. A plasmid containing the complete transcription unit of the desmin gene was transfected into hamster lens cells and into human epithelial (HeLa) cells. In both nonmuscle cell lines the desmin gene was biologically active. The synthesized desmin assembled into authentic IFs, as monitored by immunofluorescence. Double immunofluorescence staining showed that the newly formed desmin filaments colocalize with preexisting vimentin filaments, but not with preexisting keratin filaments. PMID- 3855250 TI - Retinal S antigen and retinoblastoma. A monoclonal antibody histopathologic study. AB - Using monoclonal antibody MAbA9-C6, which defines an epitope of retinal S antigen retained in fixed-tissue sections, we investigated S-antigen immunoreactivity in human fetal eyes from different gestational periods and 19 cases of retinoblastoma. S-antigen immunoreactivity was first observed in the outermost portion of the neuroblastic cell layer in the retina of a human fetus at 18 weeks' gestation, a stage preceding photoreceptor differentiation, and at all later stages examined thereafter. All adult eyes containing normal photoreceptors bound MAbA9-C6. In retinoblastomas, several different patterns of S-antigen immunoreactivity were recognized. In seven cases, S-antigen immunoreactivity appeared to be associated with normal photoreceptor elements incorporated into the growing tumor. S-antigen immunoreactivity was associated with fleurettes within the retinoblastoma in three cases and Flexner-Wintersteiner rosettes in seven cases. In 11 cases, S-antigen immunoreactivity was associated with isolated tumor cells. Our results show that S antigen may be a useful marker in the study of the embryologic development of the human retina and antigenic expression and modulation in retinoblastomas. PMID- 3855249 TI - The two alpha-tubulin genes of Chlamydomonas reinhardi code for slightly different proteins. AB - Full-length cDNA clones corresponding to the transcripts of the two alpha-tubulin genes in Chlamydomonas reinhardi were isolated. DNA sequence analysis of the cDNA clones and cloned gene fragments showed that each gene contains 1,356 base pairs of coding sequence, predicting alpha-tubulin products of 451 amino acids. Of the 27 nucleotide differences between the two genes, only two result in predicted amino acid differences between the two gene products. In the more divergent alpha 2 gene, a leucine replaces an arginine at amino acid 308, and a valine replaces a glycine at amino acid 366. The results predicted that two alpha-tubulin proteins with different net charges are produced as primary gene products. The predicted amino acid sequences are 86 and 70% homologous with alpha-tubulins from rat brain and Schizosaccharomyces pombe, respectively. Each gene had two intervening sequences, located at identical positions. Portions of an intervening sequence highly conserved between the two beta-tubulin genes are also found in the second intervening sequence of each of the alpha genes. These results, together with our earlier report of the beta-tubulin sequences in C. reinhardi, present a picture of the total complement of genetic information for tubulin in this organism. PMID- 3855251 TI - Elicitor-induced phytoalexin synthesis in soybean cells: changes in the activity of chalcone synthase mRNA and the total population of translatable mRNA. AB - Rapid changes in the mRNA activity encoding chalcone synthase, a central enzyme involved in isoflavonoid phytoalexin synthesis, were induced in cultured cells of soybean (Glycine max) after treatment with a glucan elicitor from the cell walls of the fungus, Phytophthora megasperma f. sp. glycinea, a soybean pathogen. Two dimensional gel electrophoresis of the in vitro- and in vivo-synthesized chalcone synthase showed that it consisted of a group of proteins of similar molecular weights of about 41,000, but with differing isoelectric points between pH 6.1 and pH 7.1. Total activity of chalcone synthase mRNA increased as early as 40 to 60 min after the onset of elicitor induction, and reached a peak at about 4 h. Treatment with the fungal elicitor caused major changes in the population of total translatable RNA as indicated by two-dimensional electrophoresis of the translation products. The mRNA activities for at least 16 proteins were increased and for at least 4 proteins were decreased. The elicitor-induced changes in the population of translatable mRNA occurred at a rate similar to that observed for chalcone synthase mRNA activity. Our results suggest that soybean cells respond to the glucan elicitor by major metabolic changes at the RNA level including the enhanced capacity for phytoalexin synthesis. PMID- 3855252 TI - Glucomanna diet tablets. PMID- 3855253 TI - Persistent responsiveness of the neonatal ductus arteriosus in immature lambs: a possible cause for reopening of patent ductus arteriosus after indomethacin induced closure. AB - Reopening of the ductus arteriosus after successful indomethacin-induced closure has become a major problem with indomethacin treatment. In full-term human newborns and lambs, the ductus behaves like ischemic tissue after its initial constriction. Its ability to continue to relax or contract depends on the amount of left-to-right shunt through the ductus lumen. To see if ductus constriction in preterm lambs would produce the same loss of ductus responsiveness, we delivered 42 lambs by cesarean section and ventilated them for 6.6 +/- 0.5 (+/- SE) hr. We measured ductus arteriosus resistance and left-to-right shunt with the use of radionuclide-labeled microspheres. After the hemodynamic measurements were obtained, the ductus was studied in vitro. Immature lambs were more likely to have reactive ductus (after their initial ductus constriction) than were more mature lambs. This was due to a diminished degree of ductus constriction as well as persistence of ductus responsiveness in immature lambs when compared with more mature lambs. This persistence of ductus responsiveness in immature lambs after ductus constriction may account for the high reopening rate in preterm infants after successful indomethacin-induced closure. PMID- 3855254 TI - Effect of sodium loading on the urinary excretion of prostaglandins E2 and F2 alpha in rats with hereditary diabetes insipidus (Brattleboro rats). AB - Current evidence suggests that the antidiuretic hormone (ADH) and changes in sodium balance influence renal prostaglandins (PGs). To separate these two mechanisms, the effect of sodium loading on the urinary excretion of PGE2 and PGF2 alpha was studied in female Brattleboro rats with diabetes insipidus (DIHO) and compared with that in female, age matched, heterozygous Long Evans controls (LEHE). Ten DIHO and ten LEHE rats had a normal sodium intake. In ten DIHO rats a 0.16% NaCl solution was supplied instead of drinking water for either 8 days (n = 5) or 14 days (n = 5). In two groups of LEHE rats, sodium loading was obtained with a 0.80% NaCl solution for the same study periods. Urine PGs were measured by radioimmunoassay in three 24 h urine collections for each rat. Urine PGs were significantly increased in the 8 day loaded but not in the 14 day loaded LEHE rats. In DIHO rats, a non-significant increase in both PGE2 and PGF2 alpha was present after 8 days of sodium loading, while PGE2 and the E/F ratio were decreased after 14 days of salt loading. The findings suggest that the natriuresis induced by sodium loading in the rat may be mediated in part by increased production of PGs. In addition, it seems that ADH plays a role in this response. PMID- 3855255 TI - Glucocorticoid regulation of alkaline phosphatase in the osteoblastic osteosarcoma cell line ROS 17/2.8. AB - Dexamethasone increased alkaline phosphatase levels up to 7-fold in the osteoblast-like rat osteosarcoma cell line ROS 17/2.8. This effect was associated with reduced cell growth and took place over several days in culture. The increase in enzyme activity was dose dependent, (half-maximum near 1 nM, with a hormone specificity suggesting glucocorticoid receptor mediation). Dexamethasone also increased enzyme activity in ROS 2/3 cells, but not in two nonosteoblastic osteosarcoma cell lines, indicating that among these cell lines, the effect is specific for osteoblast-like cells. Moreover, enzyme activity in both control and dexamethasone-treated cells correlated directly with levels of radioimmunoassayable bone-type isoenzyme. Increases in alkaline phosphatase activity in response to dexamethasone were detectable after about 5 h and were inhibited by both actinomycin D and cycloheximide. Thus glucocorticoids appear to increase de novo enzyme synthesis in ROS 17/2.8 cells. Finally, the cAMP elevating agents PTH, isoproterenol, and 8-bromo-cAMP, which were previously shown to reduce alkaline phosphatase activity in osteoblast-like cells, antagonized the effects of dexamethasone. Moreover, in the presence of dexamethasone, lower concentrations of these agents were required for inhibitory effects on alkaline phosphatase. PMID- 3855256 TI - Triamcinolone acetonide 21-oic acid methyl ester: a potent local antiinflammatory steroid without detectable systemic effects. AB - There have been many previous attempts to prepare glucocorticoid analogs that would have high antiinflammatory activity at the site of application but minimal systemic side effects. In principle, esters of cortoic acids could fulfill these criteria, if they had sufficient affinity for the glucocorticoid receptors but were rapidly hydrolyzed to the inactive acids in the circulation. With this rationale, we have synthesized esters of the 21-oic acid of triamcinolone acetonide (TA, 9 alpha-fluoro-11 beta, 16 alpha, 17 alpha, 21-tetrahydroxy-pregna 1, 4-diene-3,20-dione 16,17-acetonide), a potent synthetic glucocorticoid, in both tritiated and unlabeled forms. The synthesis involves 1) oxidation to the 21 dehydro compound with methanolic cupric acetate, 2) further oxidation to the acid with methylene blue in the presence of KCN at pH 6.5, 3) esterification with diazomethane in the presence of methanol or ethanol, to produce the methyl ester of TA (TAme) or ethyl ester, respectively, and 4) purification of the products by TLC and HPLC. The molecular weights and structures of the esters were established by mass spectrometry and nuclear magnetic resonance. The binding of [3H]TAme to steroid receptors or serum steroid-binding proteins and the in vitro hydrolysis of the ester were evaluated simultaneously, by chromatography on Sephadex LH-20 columns in aqueous buffer. [3H]TAme is bound with high affinity by receptors from human leukemic cells and rat liver. The pattern of competition for this binding is characteristic of glucocorticoid receptors: TA approximately equal to TAme greater than R5020 (a synthetic progestin) approximately equal to aldosterone greater than 5 alpha-dihydrotestosterone. [3H]TAme is not bound detectably by serum steroid-binding proteins and is rapidly hydrolyzed during incubation with serum at 37 C. The acidic product has a very low affinity for the glucocorticoid receptor. Complexes of [3H]TAme with human and rat receptors have sedimentation coefficients of 9-10S in hypotonic buffer containing 20 mM Na2MoO4 and approximately 4S in hypertonic, molybdate-free buffer. These values of s20,w are similar to those of the oligomeric and monomeric forms, respectively, of the same receptors labeled with [3H]TA, and of mammalian steroid receptors, in general. The antiinflammatory activity of TAme in rats is comparable to that of prednisolone, but the ester is devoid of the side effects associated with prednisolone treatment (suppression of thymic weight and of serum corticosterone concentration). These bioassay data and the high affinity of the ester for human glucocorticoid receptors suggest that TAme may eventually be useful clinically, as a loc PMID- 3855257 TI - Prostanoid concentrations in maternal/fetal plasma and amniotic fluid and intrauterine tissue prostanoid output in relation to myometrial contractility during the onset of adrenocorticotropin-induced preterm labor in sheep. AB - Prostanoid [prostaglandin (PG)] concentrations were measured in ovine maternal and fetal plasma and amniotic fluid during the onset of preterm labor induced by the administration of a pulsatile infusion of ACTH-(1-24) (P-ACTH; 66.7 ng/min for 15 min every 2 h) to the fetus and in saline-infused controls. P-ACTH administration stimulated a change in intra-uterine pressure from type A activity, characterized by sustained increases of low amplitude, to type B labor like activity of short duration, high amplitude (greater than or equal to 10 mm Hg) increases which occurred between 12 and 8 h before the onset of labor. PGF2 alpha and/or PGFM (13,14-dihydro-15-keto PGF2 alpha) concentrations increased consistently in all fluids 16 h or earlier before labor. All PGs increased in fetal carotid arterial plasma (PGE2 greater than PGF2 alpha) and amniotic fluid, and the relative increases in each PG were similar. However, PGF2 alpha and PGFM selectively increased in maternal vena caval and aortic plasma, whereas smaller or negligible increases in the prostacyclin hydrolysis metabolite 6-keto PGF1 alpha (6KF) and PGE2 were noted. The output of PGs E2 and F2 alpha (picograms per 10(5) cells/8 h) increased 1.6- and 1.7-fold, respectively, by cells dispersed from the chorioallantois of P-ACTH-treated animals compared to that in control animals infused with saline for 100 h. From fetal cotyledons, these increases were 2.4-fold (P less than 0.05) and 3.6-fold, respectively. No significant changes occurred in 6-keto PGF1 alpha output from any tissue or PGE2 or PGF2 alpha output from amnion or maternal cotyledons. We conclude 1) that PGs increase in all fluids before the increase in uterine mechanical activity during induced preterm labor, implying that PGs mediate this event and are not a result thereof; 2) that syntheses of PGs E2 and F2 alpha increase similarly in intrauterine tissues with the onset of labor; and 3) that a selective increase in PGF2 alpha, a myometrial stimulatory PG, occurs exclusively in maternal plasma, suggesting that endoperoxide conversion to PGF2 alpha is specifically enhanced during parturition or suggesting the existence of an intrauterine tissue source of 9 keto PG reductase. PMID- 3855258 TI - Effect of graded doses of intraluminal H+, prostaglandin E2, and inhibition of endogenous prostaglandin synthesis on proximal duodenal bicarbonate secretion in unanesthetized rat. AB - The purpose of this study was to examine the effect of graded doses of intraluminal HCl and prostaglandin E2 on proximal duodenal bicarbonate secretion in unanesthetized rats. Basal bicarbonate secretion was approximately 14 mumol/cm . h and increased significantly in a dose-related manner to 50, 100, and 150 mM HCl as follows: 22.0 +/- 1.5, 29.2 +/- 4.0, and 42.0 +/- 4.3 mumol/cm . h, respectively (mean +/- SE). After a single 5-min infusion of 150 mM HCl, duodenal bicarbonate secretion remained significantly above basal for almost 3 h. The responses to 100 mM HCl and 10(-4) M prostaglandin E2 were similar (29.2 +/- 4.0 and 26.9 +/- 4.4 mumol/cm . h, respectively). Indomethacin (4 mg/kg, intraperitoneally) suppressed the bicarbonate response to 150 mM HCl; whereas the response to 10(-4) M prostaglandin E2 was unaltered. These studies in the in vivo rat indicate that (a) graded doses of intraluminal HCl produced graded increases in proximal duodenal bicarbonate secretion; (b) the bicarbonate output in response to a 5-min infusion of HCl persisted for almost 3 h; and (c) the bicarbonate response to HCl was essentially abolished by indomethacin pretreatment, suggesting that endogenous prostaglandins are at least in part involved in acid-induced proximal duodenal bicarbonate secretion. PMID- 3855259 TI - Circadian and/or circahemidian rhythms in nine lymphocyte-related variables from peripheral blood of healthy subjects. AB - Circadian variations were investigated for nine lymphocyte-related variables in the peripheral blood of healthy subjects. Monoclonal antibodies targeted at membrane immunoglobulins (anti-Ig, anti-kappa, anti-lambda) or differentiation antigens (anti-IA and OKT3) were used to characterize respectively mature B cells (SIg+, kappa +, lambda +), cells expressing HLA-DR antigen (IA+), and T cells (OKT3+). Blood (33 ml) was drawn every 4 hr for 24 hr starting at 8.30 hr, on seven occasions in five apparently healthy male volunteers, recumbent from 23.00 hr to 07.00 hr. Leukocyte and differential counts were measured. Mononuclear cells were isolated on Ficoll-Hypaque before being incubated with monoclonal antibodies. The proportion of fluorescent cells per 100 microscopically determined cells was multiplied by the number of circulating lymphocytes per milliliter of venous blood. Temporal variations were validated by both paired t test and cosinor. Rhythms with a period (tau) identical to 24 hr were validated with statistical significance (p less than 0.05) for total lymphocytes, OKT3+ cells and OKT3+:SIg+ ratio, and suggested (0.05 less than or equal to p less than or equal to 0.10) for lambda + and (kappa + + lambda +) cells. Rhythms with tau identical to 12 hr were also found (p less than 0.05) for OKT3+, SIg+, kappa +, and IA+ cells as well as for the OKT3+:SIg+ and the kappa +:lambda + ratios. Validated rhythms exhibited a large amplitude, e.g., peak-through differences were 40% of the 24-hr mean. This circadian and circahemidian temporal structure of immunologic variables constitutes a time-qualified reference system for investigating immune regulations and a tool for optimizing both diagnostic criteria and effectiveness of immunotherapeutic attempts. PMID- 3855260 TI - Functional analysis of mononuclear cells infiltrating into tumors: differential cytotoxicity of mononuclear cells from tumors of immune and nonimmune rats. AB - A million syngeneic gliosarcoma (T-9) cells injected subcutaneously are sufficient to kill Fisher rats within 2 mo. Fisher rats became resistant to T-9 cells by surgical removal of the implanted tumor and repeated immunization with MMC-treated T-9 cells. Histopathologic studies revealed massive accumulation of mononuclear cells in tumor tissues of immune rats that were rejecting syngeneic T 9 tumors, whereas very few mononuclear cells were found in tumor tissues of nonimmune rats. Cell populations infiltrating into tumor tissues were identified by immunohistochemical techniques. Mononuclear cells found within the regressing tumors of immune rats were identified mostly to be T cells, and two-thirds of these T cells were OX-8 positive. In contrast, mononuclear cells found within the growing tumors of nonimmune rats were identified to be mixtures of macrophages and T cells, and very few OX-8 positive cells were found. Mononuclear cells were isolated from implanted T-9 tumors to determine whether mononuclear cells lysed T 9 cells specifically. Significant tumoricidal activity was seen when mononuclear cells from tumors of immune rats were used, whereas no detectable tumoricidal activity was observed with mononuclear cells from tumors of nonimmune rats. Winn assays confirmed in vitro 51Cr release assays by showing that tumors were rejected only when T-9 cells were implanted into normal Fisher rats along with mononuclear cells from tumors of immune rats. PMID- 3855261 TI - Natural killer cell-mediated cytotoxicity does not depend on recognition of mannose 6-phosphate residues. AB - Interaction of mannose 6-phosphate-specific receptors with their ligands has been suggested to be essential for natural killer cell (NK)-mediated cytotoxicity. Indeed, mannose 6-phosphate-specific receptors and ligands bearing mannose 6 phosphate residues are demonstrable on human peripheral blood leukocytes with NK activity as well as on K-562 NK target cells, allowing at least in principle such an interaction. It can also be shown that NK activity of human peripheral blood leukocytes is inhibited by mannose 6-phosphate. The following observations, however, exclude an essential role of the mannose 6-phosphate receptor-ligand system in NK cell-mediated cytotoxicity. 1) NK cytotoxicity is sensitive to a broad range of structurally unrelated sugar phosphates. 2) NK activity is normal in patients with I cell disease (mucolipidosis II), which due to a genetic defect are unable to synthesize the ligands for the mannose 6-phosphate-specific receptor. 3) NK cytotoxicity is not inhibited by an antiserum against the mannose 6-phosphate receptor, which blocks the receptor function. PMID- 3855262 TI - Diagnostic medicine gains from DNA probes. PMID- 3855263 TI - Immunologic selection of hemopoietic precursor cells utilizing antibody-mediated plate binding ("panning"). AB - We utilized the property of antibody adherence to plastic to separate and obtain enriched fractions of human myeloid (CFU-GM), erythroid (BFU-E) and pluripotent (CFU-GEMM) hemopoietic precursor cells. Nonadherent buoyant human marrow cells coated with mouse anti-human HLA-DR monoclonal antibody (Mc ab), an anti-pan T lymphocyte Mc ab (Leu 1/17F12) or a granulocyte--monocyte-specific Mc ab (MCS2) were incubated on polystyrene Petri plates coated with affinity purified goat anti-mouse immunoglobulin G (IgG). Cells bound to the coated plates and nonbound cells were separately recovered ("panned") by differential elution. Analysis of the nonadherent buoyant marrow cells demonstrated 12% to possess HLA-DR, 6% T, 40% MCS2 antigens on their surface by indirect immunofluorescence (IMF). After panning, 15% +/- 8%, 14% +/- 4% and 8% +/- 6% cells were plate-bound by their respective antibodies, demonstrating differing binding efficiencies. A substantial degree of purity of the recovered cell fractions was shown for bound 74% +/- 6% and 75% +/- 5% IMF positive cells) and nonbound cells (3% +/- 1% and 0.1% +/- 0.8% positive cells) coated with anti-HLA-DR or anti-T Mc ab respectively, with lesser purity for MCS2 panned cells. Seventy-three percent to 126% CFU recovery was noted, with a sevenfold enrichment of the HLA-DR bound cells for CFU-GM and CFU-GEMM, and 3.5-fold enrichment for BFU-E. Sequential panning, obtaining T nonbound-DR bound-surface immunoglobulin nonbound fractions, resulted in tenfold CFU-GM enrichment (107/10(4) cells, approximately equal to 1/100). Anti-MCS2 antibody was ineffective for panning, but use of this antibody in fluorescence-activated cell sorting (FACS) indicated the absence of the MCS2 antigen on the vast majority of CFU-GM. This study describes a relatively rapid and inexpensive method for obtaining enriched antigenically defined hemopoietic precursors in high yield. These techniques should prove useful for more clearly evaluating cellular and humoral interactions with hemopoietic precursor cells. PMID- 3855264 TI - Ara-C incorporation into DNA. PMID- 3855265 TI - Acute promyelocytic leukemia in 57 previously untreated patients. AB - Fifty-seven patients in initial phase of acute promyelocytic leukemia (APL) were treated in the same department with heparin infusion, platelet transfusions, and two related induction regimens both including cytosine arabinoside and daunorubicin. Clinical and biological findings at presentation were studied. The complete remission (CR) rate was 53%. Twenty-seven patients (47%) died during the initial course of the disease, either before day 5 (early death [ED], n = 7) or after day 5 (death in aplasia [DA], n = 20). Most ED was due to intracerebral hemorrhage (6/7), especially when large hemorrhages had been seen on fundus oculi examination. Most DA was due to multivisceral failure (9/20). No correlation was found between initial disseminated intravascular coagulation (DIC) and death. However, the worsening of coagulation parameters during induction therapy, with or without initial DIC, significantly increased the occurrence of renal and respiratory failure which were particularly frequent during the first month. The median duration of survival was short (3.5 months) and the median duration of CR (11 months) was similar to that of other acute myeloid leukemias treated with the same regimens. The possible causes of the high mortality observed during the initial courses of APL and the possible benefit of a more graduate induction chemotherapy are discussed. PMID- 3855266 TI - The impact of antitumor therapy on nutrition. AB - The treatment of the cancer patient by surgery, chemotherapy or radiation therapy can impose significant nutritional disabilities on the host. The nutritional disabilities seen in the tumor-bearing host from antitumor therapy are produced by factors which either limit oral intake or cause malabsorption of nutrients. The host malnutrition caused as a consequence of surgery, chemotherapy or radiation therapy assumes even more importance when one realizes that many cancer patients are already debilitated from their disease. PMID- 3855267 TI - Acute myeloblastic leukemia and sarcoidosis. Implications for pathogenesis. AB - A disorder characterized by anemia and neutropenia due to impaired bone marrow function and a multisystem noncaseating granulomatous (NCG) disorder typical of sarcoidosis, culminated in acute myeloblastic leukemia (AML) in a patient after 6 years of observation. Linkage between the leukemia and sarcoidosis is suggested by a precedent case report, by the statistical remoteness of a fortuitous concurrence, by numerous reported instances of regional or systemic NCG accompanying a variety of malignancies, and by evidence of AML immunogenicity. It appears possible that the sarcoidosis in this patient represented a tissue reaction to the AML. PMID- 3855268 TI - Osteosarcoma resembling osteoblastoma. AB - A series of 17 patients with osteosarcomas that histologically resembled osteoblastomas was studied. The ages of the 9 male and 8 female patients ranged from 11 to 58 years. The roentgenographic appearance was suggestive of malignancy in most cases. Two histologic features seemed most important in differentiating osteosarcoma from osteoblastoma. In the former, there is permeation of surrounding tissues and lack of "maturation" toward the edges, whereas osteoblastoma tends to show maturation peripherally and is circumscribed. Osteoblastoma-like osteosarcoma should be considered to be a malignant tumor because 7 of the 17 patients died of their disease. The authors believe that malignant osteoblastoma and aggressive osteoblastoma are really osteosarcomas that resemble osteoblastomas. PMID- 3855269 TI - Acute leukemia in two patients with hemophilia. AB - A 10-year-old classic hemophiliac and 1.5-year-old child with hemophilia B who developed acute lymphocytic and acute myelomonocytic leukemia respectively are presented. No changes in coagulation status of the patients were observed. It is suggested that hemophiliacs should be regarded as "population at risk" for the development of leukemia. PMID- 3855270 TI - The Philadelphia (Ph) chromosome in leukemia. II. Variant Ph translocations in acute lymphoblastic leukemia. AB - Nearly 20 patients with a masked Philadelphia (Ph) translocation have been described in chronic myelocytic leukemia. We report two instances of acute lymphoblastic leukemia (ALL) with variant Ph translocations. One case, involving a 26-year-old male, was associated with a variant t(14;22)(q32;q11) translocation. The second case involved a 36-year-old male with a more complex translocation, t(9;15;22)(q12;q26;q11). In each case, cells with a masked Ph translocation were observed. These appear to be the first ALL cases reported with a masked Ph chromosome. The findings are discussed in relation to recent knowledge regarding the genesis of the Ph chromosome. PMID- 3855271 TI - Further cytogenetic evidence for a multistep pathogenesis of Ph-positive chronic myelogenous leukemia. AB - A case of Ph-positive chronic myelogenous leukemia in blastic crisis was studied extensively by means of cytogenetic techniques. Karyotypic features, as well as growth patterns, kinetic data, and rates of sister chromatid exchange, were examined in bone marrow, blood, and pleural effusion cells. The data provide strong evidence for a multistep pathogenesis of the disease, the development of which appears to be linked to mechanisms of clonal selection and genetic imbalance in the malignant cell population. PMID- 3855272 TI - Normal sister chromatid exchange frequencies during growth of a transplantable murine myeloid leukemia. AB - Frequencies of sister chromatid exchange (SCE) were analyzed in normal and coexisting leukemic cells harvested from the bone marrow of mice 10, 15, 18, and 21 days after transplantation of myeloid leukemic cells. These posttransplantation stages correspond to no abnormal physical or clinical symptoms (day 10) through the terminal stage of leukemia (day 21). The data indicate that the SCE frequencies in normal cells of leukemic mice did not differ from those in normal cells of normal mice. Furthermore, the frequencies in the coexisting normal and leukemic cells remained statistically constant throughout the posttransplantation period. It is concluded from this study that spontaneous cellular SCE frequencies may not be altered by the presence or growth of leukemic cells. PMID- 3855273 TI - Interstitial deletion del(7)(q22;q31) in a case of Ph-negative CML. PMID- 3855274 TI - Chromosome 9 in variant Ph translocations. PMID- 3855275 TI - The Philadelphia (Ph) chromosome in leukemia. III. Complex Ph translocation plus inversion in chronic myelocytic leukemia. AB - Remarkable chromosome abnormalities were observed in bone marrow cells from a woman with chronic myelocytic leukemia and atypical tuberculosis due to Mycobacterium avium-intracellulare infection. Four chromosome breaks occurred at bands 1p13, 1q32, 11p15, and 22q11. These breaks resulted in a complex Philadelphia (Ph) translocation between chromosomes #1, #11, and #22 and in an inversion of chromosome #1. Oncogenes on these chromosomes include N-ras and c-sk on chromosome #1, c-H-ras on chromosome #11, and c-sis on chromosome #22. Complex chromosome rearrangements may facilitate multiple oncogene changes, thereby permitting several steps in cancer development to occur simultaneously. PMID- 3855276 TI - Chromosomes and causation of human cancer and leukemia. LIV. Near-tetraploidy in acute leukemia. AB - Near-tetraploid cell populations were observed in a case of T-cell acute lymphoblastic leukemia (T-ALL) and in one of acute myeloblastic leukemia (AML). In the ALL case, hyperdiploid chromosomal changes, characterized by an isochromosome 17q [i(17q)], as well as other changes, were seen at the onset of the disease. At the first relapse, hypertetraploid cells appeared in about 10% of the mitoses in the bone marrow (BM), and by the second and third relapses, the hypertetraploidy was present in more than 90% of the mitoses in the BM. Even though karyotypic instability was evident, all abnormal karyotypes contained one or two i(17q) at every sampling. In spite of karyotypic instability at each relapse, karyotypic evolution was observed whenever relapse occurred. A normal female karyotype was confirmed in the BM of each period. Immunologic examinations performed at each sampling revealed no recognizable changes before and after the appearance of tetraploidy. In the AML case, which was classified as FAB M2, cytogenetic examination was performed at diagnosis and relapse. In both, hypotetraploid cells were observed in over 60% of the BM cells; the modal chromosome number was 90. Banding analysis was successful at relapse, and a pseudodiploid clone characterized by t(8;21) and a hypotetraploid clone with two t(8;21) and a loss of two Y chromosomes were observed in the same BM sample. A normal male karyotype was also observed in BM cells. In both cases, giant and bizarre blasts were seen in the BM. A close correlation between near-tetraploid mitoses and giant and bizarre blast cells in BM smears of the same samples was observed. Previously published tetraploid acute leukemia cases analyzed with banding methods were accumulated and compared with our two cases. PMID- 3855277 TI - Unusual translocations involving chromosomes 12;22 and 9;12 in a case of chronic myelogenous leukemia. AB - A case of chronic myelogenous leukemia (CML) with highly unusual translocations involving both chromosomes #12 is reported. The origin of the Ph1 chromosome was due to a 12p/22q translocation. Chromosome #9 was involved in a translocation with the other chromosome #12. By critical examination of the "size" of the Philadelphia chromosome, it was noted that the breakpoints on 22q were different when compared with a previous case (see Verma and Dosik [16]), although the short arm of chromosome #12 (12p) was involved in both instances. So far, no apparent differences in the course of the disease have been attributed to the types of translocation observed in these cases. PMID- 3855278 TI - Correlation of karyotype with patient sex and age in acute myeloid leukemia. AB - Karyotypes were determined in 109 patients with acute myeloid leukemia. The proportions of patients with nonclonal chromosomal abnormalities, with numeric changes only, and with severe chromosomal aberrations were all found to increase to a statistically significant degree with patient age. Most patients in whom less than half of all cells were abnormal were elderly males. These results indicate that the cell karyotype was less stable in elderly patients than in younger patients. A higher frequency of nonclonal chromosomal changes was found in patients with clonal abnormalities compared with those without such abnormalities. Male patients tended to gain chromosomes and had more hyperdiploid abnormalities than female patients, who tended to lose chromosomes and had more hypodiploid abnormalities. This trend of chromosomal gain in males and loss in females mainly involved chromosomes similar in size to the sex chromosomes. Three female patients with trisomy 8 and one with 7q+ and t(8;21) showed an X chromosome twisted into a spiral shape. The results indicate that the initial karyotype effects the formation of some numeric changes. These findings are discussed in relation to possible secondary chromosomal changes and karyotypic instability. PMID- 3855279 TI - Radioimmunoassay for phorbol esters using rabbit antisera against phorbol succinate. AB - The phorbol nucleus was succinylated and then conjugated to bovine albumin using dicyclohexylcarbodiimide. Rabbits given injections of the conjugate developed antibodies which rose in titer progressively with repeated immunization. By the ninth bleeding, the binding of one antiserum, diluted 1:15,000, was saturated with about 10 nM [3H]phorbol-12,13-dibutyrate [( 3H]-PDBU) and had an average association constant, Ka, of 2.6 X 10(8) M-1. The serological specificity of the antisera was characterized by examining the inhibition of the [3H]PDBU-anti phorbol succinate immune system by 18 phorbol-related compounds. The specificities of antibodies from two rabbits tested in detail were qualitatively similar. The rank order of inhibitory activity for certain phorbol-related compounds was PDBU [concentration of inhibitor required to give 50% inhibition of PDBU binding (IC50) = 7.6 nM] = phorbol-13-acetate [IC50 = 8.2 nM] greater than phorbol-12,13-dibenzoate greater than 4-beta-phorbol [IC50 = 124 nM] greater than or equal to phorbol-12,13-diacetate greater than or equal to phorbol-12-myristate 13-acetate [IC50 = 184 nM] greater than phorbol-13,20-diacetate greater than phorbol-12-acetate [IC50 = 2300 nM]. The following compounds showed no detectable serological activity: mezerein, 4-0-methylphorbol-12-myristate-13-acetate, ingenol, 4-alpha-phorbol, teleocidin B, and dihydroteleocidin B. These and other results indicated that the 4-beta-phorbol nucleus was required for serological activity, that esterification of the C-13 position with benzoate, acetate, or butyrate enhanced the immunoreactivity of 4-beta-phorbol, and that among the phorbol-related compounds examined there was no direct relationship between serological activity and biological potency as tumor promoters. Using the [3H]PDBU-anti-phorbol succinate immune system, we measured the concentrations of immunoreactive phorbol-related material in crude mixtures such as croton oil and performed pharmacokinetic studies in rats given PDBU s.c. PMID- 3855280 TI - Nonselective destruction of murine neoplastic cells by syngeneic tumoricidal macrophages. AB - The purpose of these studies was to select in vitro tumor cells that were resistant to macrophage-mediated lysis. Seven different heterogeneous murine neoplasms (four fibrosarcomas, a melanoma, a rhabdomyosarcoma, and an osteogenic sarcoma) and one cloned line of a fibrosarcoma were incubated in vitro with syngeneic tumoricidal macrophages. Surviving tumor cells were recovered and expanded to undergo subsequent interaction with tumoricidal macrophages. After six sequential interactions, all cell lines were examined for their susceptibility to lysis mediated by murine peritoneal exudate macrophages activated with liposomes containing muramyl tripeptide phosphatidylethanolamine. In all eight systems, no significant differences were detected between the parent tumor cells and cells that survived the sequential interactions. Neither macrophage infiltration into s.c. tumors nor the experimental or spontaneous metastatic potentials of the parental tumors differed from the lines established by cells surviving macrophage-mediated lysis. Collectively, the data suggest that tumor cell destruction by activated macrophages is nonselective and does not lead to the development of resistant tumor cells nor to cells with altered metastatic properties. PMID- 3855281 TI - Highly lipophilic phorbol esters as inhibitors of specific [3H]phorbol 12,13 dibutyrate binding. AB - We examined the ability of a series of highly lipophilic phorbol esters to inhibit [20-3H]phorbol 12,13-dibutyrate binding to the cytosolic aporeceptor from mouse brain. If added in the usual fashion directly into the aqueous phase of the assay mixture, phorbol 12,13-distearate, phorbol 12,13-dioleate, and phorbol 12,13-dimyristate showed very weak inhibitory activities, with apparent inhibitor equilibrium dissociation constant values above 4 microM. In contrast, if incorporated directly into the liposomes used to reconstitute the aporeceptor, all three derivatives inhibited binding with high apparent affinities, 7.4 to 34 nM. The less lipophilic derivative phorbol 12,13-didecanoate showed a similar high affinity, 2.4 to 3.2 nM, by either route of addition. Consistent with the activity of the lipophilic derivatives being masked by an inability to transfer from the aqueous to the lipid phase, phorbol 12,13-distearate added to the aqueous phase inhibited efficiently (apparent inhibitor equilibrium dissociation constant, 14 nM) in the presence of 0.03% Triton X-100. The results suggest that the phorbol ester receptor recognizes phorbol esters which are inserted into the lipid bilayer. They indicate, moreover, that the apparent low activity of the more lipophilic phorbol esters is strongly influenced by factors other than equilibrium binding affinities. PMID- 3855283 TI - Molecular and karyological analysis of methotrexate-resistant and -sensitive human leukemic CCRF-CEM cells. AB - A methotrexate-resistant subline, CCRF-CEM/R1, was selected stepwise from the human leukemic lymphoblast T-cell line, CCRF-CEM, and maintained in 0.2 microM methotrexate. The development of resistance to methotrexate (75-fold) was associated with a 20-fold increase of dihydrofolate reductase activity. The affinity of dihydrofolate reductase from the resistant cells for methotrexate did not vary significantly as compared to the enzyme from the parent cells. Southern blot analysis of DNA from parent and CCRF-CEM/R1 cells demonstrated amplification of the dihydrofolate reductase gene in the resistant line. Quantitative dot-blot DNA hybridization demonstrated the presence of about 18 reductase gene copies in the R1 cells. The human dihydrofolate reductase gene contained at least 4 intervening sequences and was about 30 kilobases in size. Northern blot analysis demonstrated an increase in dihydrofolate reductase messenger RNA species, the predominant message was 3.8 kilobases. Cytogenetic analysis of CCRF-CEM/R1 cells revealed an elongated marker chromosome containing a homogeneous staining region not present in the parent line. This chromosome appeared to be derived from chromosome 21. PMID- 3855282 TI - Effects of calmodulin antagonists and cytochalasins on proliferation and differentiation of human promyelocytic leukemia cell line HL-60. AB - To identify the possible roles of Ca2+-related proteins, calmodulin and microfilaments in leukemic cells, we tested the effect of calmodulin antagonists and cytochalasins on proliferation and differentiation of human promyelocytic leukemic HL-60 cells. The growth of HL-60 was inhibited by N-(6-aminohexyl)-5 chloro-1-naphthalenesulfonamide, N-(4-aminobutyl)-5-chloro-2 naphthalenesulfonamide, and trifluoperazine dihydrochloride. In contrast, the 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3]-induced differentiation of HL-60, as judged by plasma-membrane antigenic changes detected by monoclonal antibodies (OKM1, OKT9), nitroblue tetrazolium reduction, and induction of phagocytotic capacity, was not inhibited by N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide or N-(4-aminobutyl)-5-chloro-2-naphthalenesulfonamide, although phagocytosis was depressed by N-(6-amino-hexyl)-5-chloro-1-naphthalenesulfonamide or N-(4 aminobutyl)-5-chloro-2-naphthalenesulfonamide. Trifluoperazine dihydrochloride also failed to inhibit the antigenic change induced by 1,25-(OH)2D3. Cytochalasins B and D, microfilament-disrupting agents, inhibited the cytoplasmic division and the growth of HL-60 but did not inhibit the 1,25-(OH)2D3-induced differentiation. These findings suggest that the calmodulin- and microfilament dependent process may be involved in the proliferation of HL-60, but not in the differentiation induced by 1,25-(OH)2D3. PMID- 3855284 TI - Cytotoxic effects of folate antagonists against methotrexate-resistant human leukemic lymphoblast CCRF-CEM cell lines. AB - A human T-lymphoblast cell line, CCRF-CEM/R1, resistant to methotrexate by virtue of increased dihydrofolate reductase activity, was grown in stepwise increasing concentrations of methotrexate. This additional selection pressure resulted in a cell line, CCRF-CEM/R2, resistant to methotrexate by virtue of both an elevation of dihydrofolate reductase activity and a marked decrease in methotrexate transport. The R1 and R2 cells were approximately 70- and 350-fold more resistant to methotrexate than were the parent cells. The effects of three folate antagonists were studied on these cell lines and also on CCRF-CEM/R3 cells, characterized by impaired methotrexate transport but normal levels of dihydrofolate reductase. The elevated reductase subline CCRF-CEM/R1 was cross resistant to triazinate [Baker's antifol, NSC 139105; ethanesulfonic acid compounded with alpha-(2-chloro-4-[4,6-diamino-2,2-dimethyl-S-triazine-1-(2H)-yl] phenoxyl)-N,N-dimethyl-m-toluamide (1:1)] and trimetrexate (NSC 249008, JB-11, TMQ; 2,4-diamino-6-[(3,4,5-trimethoxyanilino)methyl]quinazoline), two nonclassical folate antagonists. In contrast, the transport defective subline, CCRF-CEM/R3 was not cross-resistant to these two compounds. In cells resistant to MTX by virtue of both mechanisms, CCRF-CEM/R2, triazinate, and trimetrexate were partially cross-resistant. All three methotrexate-resistant sublines showed minor cross-resistance to isoaminohydroxyquinazoline (IAHQ, NSC 289517; 5,8 dideazaisopteroylglutamate), a folate antagonist inhibitor of thymidylate synthase. These data demonstrate that methotrexate-resistant tumor cells may be effectively inhibited by antifolates with different route of entry into cells or with different enzyme targets. PMID- 3855285 TI - Chromosomal alterations in acute leukemia patients studied with improved culture methods. AB - Cytogenetic studies, using improved short-term culture techniques, were performed on 64 patients with acute leukemia to determine the incidence and kinds of clonal karyotypic changes detectable with this newer methodology. An adequate number of analyzable mitoses was obtained from 59 patients. Clonal chromosomal alterations were found in 88% (52 of 59) of patients, as compared to approximately 50% in previous studies of acute leukemia in which conventional techniques were used. From our series, abnormal karyotypes were detected in 37 of 44 (84%) cases with primary acute nonlymphocytic leukemia, all 5 with secondary acute nonlymphocytic leukemia, and all 10 with acute lymphoblastic leukemia. Among the entire group of patients, several recurrent abnormalities were observed, e.g., -7 in eight cases, +8 in seven cases, t(15;17) in four cases, and t(8;21) or a variant of this translocation in four cases. In five patients, the only abnormality was a rather subtle structural rearrangement (e.g., tiny deletion). Five other patients had clonal changes which were found in less than 10% of the mitoses examined in each case. Our results indicate that most patients with acute leukemia, both acute nonlymphocytic leukemia and acute lymphoblastic leukemia, have clonal chromosome abnormalities associated with their disease. PMID- 3855286 TI - Depression of natural killer cytotoxic activity in lymphocytes infiltrating human pulmonary tumors. AB - We assessed natural killer activity of lymphocytes present at the site of human tumors to determine the local effects of the tumor on immune function. Lymphocytes were extracted from human pulmonary tumors of varying histological types. In addition to tumor-infiltrating lymphocytes (TIL), peripheral blood lymphocytes from the same patients were prepared. Using a Michaelis-Menten kinetic model and titration of K562 targets in a 51Cr release assay, TIL exhibited a marked depression of maximal lytic capacity (Vmax) when compared to autologous peripheral blood lymphocytes. In a single cell lysis and binding assay to assess the proportion of target-binding lymphocytes and target-lysing binders, both TIL and peripheral blood lymphocytes had equivalent numbers of lymphocytes binding target cells and an equivalent number of target-binding cells that could mediate cytolysis. Analysis of lymphocyte subsets was performed using mouse monoclonal antibodies. The TIL population expressed markers found on natural killer cells, including HNK-1 and B73.1. Thus, natural killer cells are present at the tumor site, show lytic capability, but appear to be unable to recycle for multiple lytic events. PMID- 3855287 TI - Enhancement of the differentiation-inducing properties of 6-thioguanine by hypoxanthine and its nucleosides in HL-60 promyelocytic leukemia cells. AB - Previous work has shown that 6-thioguanine (TGua) is an effective inducer of differentiation of Friend and HL-60 leukemia cells which lack hypoxanthine guanine phosphoribosyltransferase but is at best only weakly active in inducing maturation in parental wild-type cells. Studies in wild-type and mutant HL-60 cells have provided evidence that the free-base TGua is the form of this drug that induces differentiation, while the formation of TGua nucleotides leads to cytotoxicity and inhibits differentiation. To attempt to increase the potential of TGua to serve as an inducer of parental HL-60 leukemia cells, physiological purine and pyrimidine nucleosides were tested for their ability to protect HL-60 cells against TGua-induced cytotoxicity. Adenosine, deoxyadenosine, inosine, and deoxyinosine completely prevented the toxic action of the purinethiol, while guanosine and deoxyguanosine were only partially effective. The capacity of adenosine and deoxyadenosine to prevent the cytotoxicity of TGua was abolished by the inhibitor of adenosine deaminase, deoxycoformycin, implying that inosine and deoxyinosine were the active forms of the protecting agents. The protective activities of inosine and deoxyinosine appeared to depend on phosphorolysis catalyzed by purine nucleoside phosphorylase, since exogenously added hypoxanthine was as effective as inosine in reducing the cytotoxicity of the purine antimetabolite. Accumulation of TGua nucleotides in the acid-soluble fraction of HL-60 cells treated with TGua was significantly decreased by the presence of inosine. Inosine also served under these circumstances as a D-ribose 1-phosphate donor to TGua, as evidenced by its increased conversion to 6 thioguanosine. The prevention of the cytotoxicity of TGua by the simultaneous administration of hypoxanthine or its nucleosides resulted in an expression of the differentiation-inducing properties of TGua in HL-60 cells, as measured by the accumulation of nitroblue tetrazolium-positive cells. These findings support the concept that the processes of cytotoxicity and differentiation are separable events produced by different metabolic forms of the purine antimetabolite. PMID- 3855288 TI - Pharmacokinetics of amsacrine in patients receiving combined chemotherapy for treatment of acute myelogenous leukemia. AB - The pharmacokinetics of amsacrine have been studied after the first and third infusions (200 mg . m-2) in 10 patients receiving combined chemotherapy for the treatment of acute myelogenous leukaemia (AML). Postinfusion amsacrine elimination was best described by a biexponential expression with a mean t1/2 alpha of 0.8 h and a terminal t1/2 beta of 5.3 h. After the third infusion there was a significant reduction (P less than 0.05) in the plasma clearance (Cl) and a prolongation of the terminal half-life (t1/2 beta) (P less than 0.01), but no change in the initial half-life (T1/2 alpha) or volume of distribution (Vd). No significant overall changes were recorded in any of the biochemical indices of renal or hepatic function between the first and third infusions, but the patient who exhibited the largest reduction in Cl showed a marked increase in AST levels and a reduction in albumin concentration. Two distinct groups were apparent after the first infusion, patients with a Cl greater than 294 and those with a Cl less than 208 ml . h-1 . kg-1. The latter patients were significantly older (P less than 0.05), and four of the five had subnormal albumin concentrations. Urinary determination of amsacrine indicated that renal elimination plays a minor role in the total clearance of this drug. Amsacrine was also found to be highly bound to plasma proteins (96.4%-97.7%), but changes in binding were not responsible for the reduced Cl and prolonged t1/2 beta observed between the first and third infusions. We suggest that the elimination of amsacrine may be susceptible to small changes in hepatic function, perhaps due to the high amsacrine concentrations (5-18 mumol . l-1) achieved with this regimen, which may be approaching saturation of the capacity for hepatic elimination. PMID- 3855289 TI - Phase-II trial of 4-demethoxydaunorubicin (DMDR) for advanced hypernephroma. AB - A phase-II trial of 4-demethoxydaunorubicin (4-DMDR) was performed in 21 patients with advanced renal cell carcinoma. The drug had demonstrated a broader spectrum of activity with less cardiotoxicity in preclinical evaluation than the parent compound daunorubicin. The starting dose was 12.5 mg/m2, with escalations to 15 and 17.5 mg/m2 in the absence of toxicity. Myelosuppression was the primary toxicity and cardiac toxicity was not seen in four patients who received four or more doses of DMDR. No responses were seen in 19 adequately treated patients, including 14 who had received no prior therapy. PMID- 3855290 TI - Induction of remission in acute promyelocytic leukemia with mitoxantrone. AB - Two patients with acute promyelocytic leukemia in first relapse received mitoxantrone 12 mg/m2/day for 5 days. Both patients received IV heparin with replacement of platelets and coagulation factors for control of disseminated intravascular coagulopathy. Both have achieved a complete remission after one course of treatment. We conclude that mitoxantrone is active in patients with acute promyelocytic leukemia and that these patients should also be included in the planned prospective randomized trials comparing daunorubicin and mitoxantrone in combination with cytarabine in previously untreated patients with acute nonlymphoblastic leukemia. PMID- 3855291 TI - Continuous positive airway pressure: a breathing system to minimize respiratory work. AB - During continuous positive airway pressure (CPAP) the work of breathing is least when there is no change of airway pressure measured at the mouth (delta Paw) during respiration. In this study we consider the physical properties of CPAP circuits which determine the magnitude of delta Paw, and apply this information to the design of a simple, reliable CPAP system that minimizes delta Paw and incorporates the additional advantages of low-flow rates and the use of commonly available proven components. Using a weighted reservoir bag and threshold CPAP valve to maintain pressure, we found that delta Paw may be reduced to less than 1.0 cm H2O during quiet breathing, at a tidal volume of 700 ml and maximum inspiratory flow of 1.35 L/sec. delta Paw was dependent on both the resistance and the reactance of the circuit components; it was increased when resistance or flow rates were high, and when delivery pressure depended on the elastic tension in the wall of the reservoir bag or on compression of the bag with springs or elastic bands. PMID- 3855292 TI - [Rhino-cranial mucormycosis in acute leukemia]. AB - The diagnosis of acute lymphatic non-T-non-B leukaemia of common ALL type was confirmed in a 22-year-old woman. Cytostatic treatment brought full remission for 21/2 years. Renewed cytostatic treatment for recurrence brought about a mucormycosis in the mid-face region during a period of protracted agranulocytosis, despite antibiotic prophylaxis with ketoconazole and cotrimoxazole. The causative mucor organism was demonstrated in smears and biopsy material. The infection was successfully treated with i.v. amphotericin B and debridement of the affected tissue. There remained large tissue defects in the region of gum, nose, upper lip and right oral cavity. Previously the mortality rate of mucormycosis in the course of leukaemia was 100%. PMID- 3855293 TI - [Oncogens and cancer. Review and a new method for measuring the gene expression in relation to the cell cycle]. PMID- 3855294 TI - Control of HL-60 myeloid differentiation. Evidence of uncoupled growth and differentiation control, S-phase specificity, and two-step regulation. AB - Myeloid differentiation of HL-60 human promyelocytic leukemia cells was studied during DMSO-induced differentiation. G 1/0-specific growth arrest could occur without the usual associated subsequent phenotypic differentiation into mature myeloid cells, suggesting that growth arrest and phenotypic differentiation are separately regulated. In the course of differentiating, the cells achieved a semi stable intermediate state where they had a labile, pre-commitment memory of exposure to inducer, but were not yet committed to differentiation. This state was associated with a nuclear structural change previously found to be associated with the precommitment memory state. The process of differentiation could thus be resolved into two steps, early events up through development of pre-commitment memory and late events subsequents to pre-commitment memory. The kinetics of terminal cell differentiation indicated that the cellular regulatory event initiating a program of differentiation in response to inducer was S phase specific. A comparison of the present results for DSMO to previous results for retinoic acid (RA)-induced HL-60 myeloid differentiation showed that the two inducers effect different cellular pathways for differentiation of HL-60 cells to mature myeloid cells, but with certain common features including the above S phase specificity and pre-commitment memory. PMID- 3855295 TI - Chloramphenicol acetyltransferase gene of staphylococcal plasmid pC221. Nucleotide sequence analysis and expression studies. AB - The nucleotide sequence of the inducible chloramphenicol acetyltransferase gene (cat) of Staphylococcus aureus plasmid pC221 has been determined. The deduced primary structure for the 215 residue polypeptide (25.9 kDa) is in agreement with partial amino acid sequence data on the purified protein, previously designated as the type C variant of CAT. In common with the inducible cat elements of pC194 and B. pumilus, the 5' non-coding region of the cat of pC221 contains an inverted complementary repeat ('stem-loop' or 'hairpin') which may sequester the predicted ribosome bonding site of the mRNA. The likely transcription initiation site has been determined in vitro using purified B. subtilis RNA polymerase. Recombinant plasmids carrying the cat of pC221 on a 1156 bp TaqI fragment are expressed inefficiently in Escherichia coli, wherein induction is both poor and orientation specific. PMID- 3855297 TI - Feasibility study. PMID- 3855296 TI - Hepatic cirrhosis in young adults: association with adolescent onset of alcohol and parenteral heroin abuse. AB - Hepatic cirrhosis is infrequently diagnosed in young adults. In a hospital for addictive diseases in New York City, we found cirrhosis in 53 patients under age 35 within just 40 months. The cirrhosis was biopsy-proven in 37 patients (group I) and diagnosed clinically in 16 patients with severe liver disease (group II). Alcohol abuse was found in 51 patients (96%), and parenteral heroin abuse was seen in 52 (98%). The duration of alcohol abuse was seven or fewer years in 24 patients (45%) and 10 or fewer in 39 (74%). In 44 (83%), the substance abuse began in adolescence. Comparison of group I cirrhotic patients with 65 non cirrhotic biopsied patients showed that cirrhosis was significantly associated with abuse of both alcohol and parenteral heroin (p less than 0.001). The distribution of 66 HLA antigens from A, B, C, and DR loci showed no differences when 42 patients were compared with 42 ethnically-matched control substance abusers. The early development of cirrhosis in these young patients may be related to multiple hepatic injuries induced by alcohol and parenteral heroin abuse and to the onset of addictive diseases during adolescence or early adult life. PMID- 3855298 TI - Adolescents with bulimic and nonbulimic eating disorders. AB - Twenty-eight adolescents with eating disorders were analyzed in a study that included a retrospective examination of their hospital records and a letter to their family doctor and the patient. These 28 patients were dieting to lose weight, with nine reporting episodes of overeating and vomiting. The clinical characteristics of the bulimic patients versus the nonbulimic are contrasted. Bulimic patients tended to be older and ill for longer. They had a higher weight score, vomited more, and used laxatives and diet medications more frequently. They threatened suicide more often than nonbulimics and many had been overweight previously. Poor outcome was positively associated with bulimia, longer duration of illness, and older age of presentation, but not with a lower weight during the illness. However, with the exception of the presence of vomiting and being less likely to feel fat, these differences in clinical characteristics between bulimic and nonbulimic groups did not approach the level of statistical significance. PMID- 3855299 TI - Self-starvation in a diabetic adolescent. AB - The case of a 14-year-old girl who began food refusal shortly after the development of diabetes mellitus is presented. Her dieting eliminated the need for insulin and urine testing and, as a result, allowed the patient to deny that she had diabetes. Although her course resembled that seen in primary anorexia nervosa, this patient was felt to have atypical anorexia nervosa, in this case an extreme form of illness denial probably associated with psychosis. PMID- 3855300 TI - Regulation of protein synthesis and accumulation during murine erythroleukemia cell differentiation. AB - We have examined the repertoire of cytoplasmic proteins present at different times during murine erythroleukemia (MEL) cell differentiation. Our laboratory has developed an improved differentiation system in which the use of rapidly inducing MEL subclones and culture conditions which stabilize terminally differentiated cells results in highly synchronous differentiation and the accumulation of large numbers of cells in the end stages of differentiation. Using two-dimensional gel electrophoresis, the proteins of MEL cell cytoplasm have been fractionated at different times of induction in the improved system. The protein composition of MEL cell cytoplasm changes dramatically during the differentiation program, in contrast to previously reported results. We observe patterns of changes that are consistent with alterations in the relative degradative rates as well as the relative synthetic rates of the different proteins. We find that the rate of incorporation of labeled amino acid into protein is reduced in induced cultures of MEL cells. We demonstrate that the contribution of uninduced cells to the protein patterns observed late in differentiation is minor in our system, and argue that the results previously obtained for differentiating MEL cells were influenced by the heterogeneity of the induced populations. PMID- 3855301 TI - Regulation of glycophorin gene expression by a tumor-promoting phorbol ester in human leukemic K562 cells. AB - We have previously shown that treatment of the human leukemic cell line K562 with the tumor promoter 12-O-tetradecanoyl phorbol 13-acetate (TPA) leads to a reduction in the expression of two surface glycoproteins, Gp-105 and glycophorin (Fukuda, M. (1981) Cancer Res. 41, 4621-4628). In this report, we examine the mechanism for reduction of glycophorin expression. By immunoprecipitation of metabolically labeled proteins, we found an 11-fold reduction in the incorporation of [3H]glucosamine into glycophorin after 48 h of TPA treatment. This was found to closely correlate with a reduction in [35S]methionine incorporation, suggesting that regulation occurs at the level of protein synthesis and not glycosylation. We also found that TPA decreased the incorporation of [3H]glucosamine into glycophorin in another leukemic cell line, HEL. A time course showed that there was a 3-fold reduction in glycophorin biosynthesis as early as 4 h after TPA treatment. The level then decreased to approximately 10% of the untreated control levels after 12 h of treatment. The reduction in glycophorin biosynthesis was found to be reversible following removal of TPA from the culture medium. By immunoprecipitation of in vitro translation products directed by purified total cellular RNA, we found that there is a corresponding decrease in glycophorin mRNA activity. Glycophorin mRNA activity was extensively reduced as early as 1 h after TPA treatment and by 12 h was nearly undetectable. Interestingly, the size of the primary translation product was found to be 8 kDa larger than the fully processed apoprotein. These results are consistent with the transcriptional regulation of glycophorin expression by TPA. PMID- 3855303 TI - 62nd AADS annual session, March 17-20, 1985, Las Vegas, Nevada. Abstracts of educational research and new programs presentations. PMID- 3855302 TI - Phorbol esters increase calcitonin gene transcription and decrease c-myc mRNA levels in cultured human medullary thyroid carcinoma. AB - Medullary thyroid carcinoma is a tumor of the calcitonin-secreting thyroid C cell, with a variable malignant potential. Virulent tumors are characterized by decreased calcitonin production, suggesting the emergence of a less differentiated medullary thyroid carcinoma cell. In order to further delineate relationships between tumor progression and status of differentiation of medullary thyroid carcinoma cells, we have sought to chemically manipulate the TT cell line, an established culture of human medullary thyroid carcinoma, derived from a patient with aggressive disease. We found that the phorbol esters, 12-O tetradecanoyl phorbol 13-acetate and phorbol 12,13-dibutyrate 1) altered the morphology of the TT cells towards that of high-calcitonin-containing cells; 2) enhanced calcitonin secretion 7-fold; 3) increased calcitonin production at the transcriptional level by 2-fold; 4) inhibited cellular proliferation; and 5) decreased, by 80%, the levels of the c-myc gene mRNA. These data suggest that phorbol esters induce, in human medullary thyroid carcinoma cells in culture, a programmed pattern of events resulting in differentiation of these cells. PMID- 3855304 TI - The HLA complex and the pathogenesis of infectious diseases. PMID- 3855305 TI - Monocyte inhibition of lung fibroblast growth: relationship to fibroblast prostaglandin production and density-defined monocyte subpopulations. AB - Mononuclear cell fibroblast interactions in the normal human lung are poorly understood. Mononuclear cells can regulate fibroblast function and blood monocytes are known to migrate to the lung and participate in pulmonary inflammation. Thus, to clarify mononuclear cell-fibroblast interactions in the normal lung, we obtained supernatants from adherent monocytes and characterized their effect on the log phase growth of human lung fibroblasts. Monocyte supernatants inhibited fibroblast growth in a dose-dependent fashion. The inhibition was the result of an approximately 16,000 MW soluble factor(s) that was heat stable, trypsin sensitive, and chymotrypsin resistant. Elaboration of the factor(s) required monocyte protein synthesis and was not restricted to a density-defined monocyte subpopulation. The inhibitory capacity of a monocyte supernatant was directly related to its ability to stimulate fibroblast prostaglandin production. Blocking fibroblast prostaglandin production reversed the inhibition of fibroblast growth caused by monocyte supernatants. Thus, monocyte inhibition of fibroblast growth may be mediated by fibroblast prostaglandin production. Recruitment of monocytes to the lung and subsequent monocyte inhibition of fibroblast growth may be important in regulating pulmonary fibrosis. PMID- 3855306 TI - Reticuloendothelial system activated by fructose-1,6-diphosphate in mice. AB - Fructose-1,6-diphosphate (FDP) exerts a marked activity on reticuloendothelial system (RES) functions, increasing in mice the clearance of colloidal carbon. ATP depletion occurring during phagocytic activity is concentrated by FDP. PMID- 3855307 TI - Enhanced lysis of [125I]5-iodo-2'-deoxyuridine-labeled target cells in the presence of normal macrophages: possible mechanisms of action. AB - The potential mechanisms involved during the faster release of [125I]-iodo-2' deoxyuridine (125IdUrd)-labeled target sarcoma cells in the presence of normal C57BL/6J peritoneal macrophages were investigated. Maximum (= 90%) "spontaneous" release of 125I from target cells cultured alone occurred over a period of about 10 days. However, after about 3 days, confluent sheets of target cells developed. In the presence of normal macrophages, 90% of the 125I was released between 3 and 7 days, again with the formation of confluent sheets of target cells. This enhanced 125I release was not influenced by increasing the relative concentration of IdUrd using the nonradioactive isotope 127IdUrd. Established mechanisms of target cell destruction were investigated but no evidence was found for the involvement of superoxide anion, hydrogen peroxide, or regulation by prostaglandin synthesis. The macrophage-mediated effect was abrogated by incorporating hydrocortisone-acetate (10(-7) to 10(-4) M) into the culture medium but this did not affect target cell proliferation. The use of serum-free culture medium suggested that macrophages secreted a soluble mediator that was not derived from or dependent on the presence of fetal bovine serum. In addition, macrophage-conditioned medium was able to induce the faster 125I release. The failure to precipitate with 20% trichloroacetic acid the 125I released from target cells cultured in the presence of macrophages indicated that the radioactive component had been separated from the precipitable DNA. The data are discussed in light of two possible hypotheses: that macrophages recognized subtle changes in IdUrd-labeled cells and exacerbate radiotoxicity, and that the faster release reflected proliferative death caused by stimulated growth. PMID- 3855308 TI - Herpes simplex encephalitis. PMID- 3855309 TI - Abnormal computed tomography brain scans in children with acute lymphoblastic leukemia: serial long-term follow-up. AB - In a previous study we reported the occurrence of computed tomographic (CT) brain scan abnormalities in a group of asymptomatic children with acute lymphoblastic leukemia (ALL) who had received prophylactic cranial irradiation and maintenance intrathecal chemotherapy. One or more of four types of CT-scan abnormalities were observed: ventricular dilatation (VD), subarachnoid space dilatation (SAD), areas of parenchymal decreased attenuation coefficient (DAC), and intracerebral calcifications (CALs). To study the natural history of these findings, serial CT scans were obtained on 24 of the original 32 patients who were available for long term follow-up. CT scanning was performed for a minimum of seven years from the initiation of CNS preventive therapy. Review of the CT scans showed that VD (n = 5) and SAD (n = 7) were stable over the time of follow-up. DAC, originally observed in two patients, was no longer present on follow-up scans. In contrast, five patients developed CALS from five to seven years after initiation of CNS preventive therapy. All occurred in children who were less than 8 years of age at the time of diagnosis (P less than .01). These data indicate that CALs may develop many years after the cessation of CNS preventive therapy and suggest that long-term CT-scan follow-up should be considered in children who have received CNS preventive therapy. PMID- 3855310 TI - Altered central nervous system pharmacology of methotrexate in childhood leukemia: another sign of meningeal relapse. AB - CSF and plasma antifolate concentrations during 257 intravenous (IV) infusions of high-dose methotrexate were measured in 60 children with acute lymphoblastic leukemia. In 49 children who have never had evidence for CNS leukemia, the mean steady-state CSF to plasma methotrexate ratio was 0.013 (SD = 0.01). In contrast, 11 children with overt meningeal leukemia had a 12-fold higher mean ratio of 0.157 (range, 0.013 to 0.844, p less than .01). In the group of patients studied, all of those with a CSF methotrexate concentration greater than 2 SD above the mean either had leukemic cells in the CSF or subsequently developed this condition. In two patients, overt CNS leukemia was preceded by a high CSF:plasma drug ratio at a time when there was no cytologic or clinical evidence for CNS leukemia. As previously observed with intrathecal methotrexate, we conclude that overt meningeal leukemia increases CSF drug concentrations during IV methotrexate therapy. An elevated CSF to plasma ratio may be useful to predict imminent CNS relapse or to verify completeness of response to therapy. PMID- 3855311 TI - Effects of protein-free diet and food deprivation on hepatic rhodanese activity, serum proteins and acute cyanide lethality in mice. AB - This study was undertaken to evaluate changes in hepatic and extra-hepatic cyanide detoxication resulting from nutritional deficits and any parallel changes in cyanide sensitivity. Male CD-1 mice were fed control diet, control diet in reduced quantities or protein-free diet. After 14 d body weight and relative liver size were lower in the protein-free diet and the food-deprived groups than in the control group. Hepatic and serum protein and albumin concentrations were lower in the protein-free diet group and hepatic protein and albumin concentrations were higher in the food-deprived group than in the control group. Hepatic rhodanese activity was higher in the protein-free diet group than in either of the other two groups. Compared to controls lethality was higher in the protein-free diet group when cyanide was administered in doses of 4 mg/kg body weight alone and 10.7 and 16.0 mg/kg body weight after thiosulfate pretreatment; but only higher in the food-deprived group at the higher dose cyanide given together with thiosulfate. These data suggest that hepatic rhodanese is not principally involved in the detoxication of cyanide even when exogenous thiosulfate is provided, nor does thiosulfate appear to exert its antidotal action by increasing the available cyanide-labile albumin-bound sulfane-sulfur. PMID- 3855312 TI - The effect of a single oral dose of ethyl linoleate on urinary prostaglandin E2 excretion in essential fatty acid-deficient rats. AB - The effects of a single oral dose of ethyl linoleate on urinary prostaglandin E2 (PGE2) excretion and urine output were investigated in essential fatty acid (EFA) deficient rats. Weanling male rats were fed a fat-free diet. After 13 wk of feeding, eight rats received an oral dose of 400 mg of ethyl oleate. Seven days later the same eight rats received 400 mg of ethyl linoleate. The oleate dosage served as control. Another seven EFA-deficient rats received an oral dose of 100 mg of ethyl linoleate. The 24-h urine collections from each animal were analyzed for PGE2 by radioimmunoassay. Within 24 h the oleate dose resulted in a 1.3-fold increase in urinary PGE2 excretion. The 400-mg dose of ethyl linoleate induced a 2- to 3-fold increase in urinary PGE2 excretion during 7 d. The 100-mg dose of ethyl linoleate resulted in a 1.3- to 1.5-fold increase for 2 d. Neither the ethyl oleate dose nor the low dose of ethyl linoleate had any effect on urine output, whereas the high dose of ethyl linoleate induced a slow increase during the following 6 d. The present results show that a single dose of 400 mg of ethyl linoleate increased urinary PGE2 excretion and urine output in EFA-deficient rats. However, these two parameters do not seem to be correlated. The amount of urinary PGE2 excreted in excess of baseline urinary PGE2 excretion accounted on a molar basis for less than 1 ppm of the administered dose of ethyl linoleate. PMID- 3855313 TI - Facial nerve injury during surgery of the temporomandibular joint: a comparison of two dissection techniques. AB - Changing the dissection technique for gaining access to the temporomandibular joint decreased the incidence of facial nerve injury from 25% to 1.7%. This decrease can be attributed to the elimination of both development of a skin flap and dissection of tissue overlying the lateral capsule. Normal anatomic variation in the distribution of facial nerve branches may relate to the incidence of clinically apparent injury. PMID- 3855314 TI - The frequency and distribution of skeletal and dental components in Class II orthognathic surgery patients. AB - In an effort to identify the skeletal and dental relationships of Class II malocclusion, lateral cephalograms of 253 adult orthognathic surgery patients (76 male, 177 female) who had a Class II molar and cuspid relationship were traced. One hundred and four of the subjects had had presurgical orthodontic treatment and 148 had not. The most common combination of variables found in this study population was a retrusive maxilla, protrusive maxillary incisors, protrusive mandibular incisors, a retrusive mandible, and a long lower facial height. PMID- 3855315 TI - Brainstem auditory evoked potentials in atypical facial neuralgia. AB - Atypical facial neuralgia is an ill-defined syndrome of obscure etiology characterized by chronic facial pain. The diagnosis is one of exclusion, made only after carefully ruling out a variety of conditions that may cause orofacial pain. The present study detected brainstem abnormalities on the side of the facial pain through examination of brainstem auditory evoked potentials in two out of 12 patients who were clinically diagnosed as having atypical facial neuralgia. The recording of brainstem auditory evoked potentials provides a simple, well-standardized, noninvasive test that may be of value in the investigation of patients who have chronic facial pain. PMID- 3855316 TI - Intraalveolar transplantation of teeth with crown-root fractures. AB - Intraalveolar transplantation using a simple extraction technique with extrusion of the root sufficiently to allow crown preparation was performed in 23 cases of crown-root fractures. A normal periodontal membrane was present after three months in all cases. Signs of superficial root resorption were observed in two cases, and small periapical radiolucencies were seen in another two, probably as a reaction to the presence of excess root-filling material. Minor remodeling of the marginal bone adjacent to the extruded roots was observed in eight cases. PMID- 3855317 TI - Acute necrotizing ulcerative gingivitis in a case of systemic lupus erythematosus. AB - Presented is an unusually severe case of acute necrotizing ulcerative gingivitis (ANUG) in association with systemic lupus erythematosus (SLE), in which the patient was observed to slough a considerable amount of attached gingival tissues and eventually to lose a number of teeth and supporting bone. The usual limited and treatable nature of ANUG is reviewed, and attention is directed to the mechanisms by which SLE and therapeutic amounts of steroids can contribute to the increased severity of the oral disease. PMID- 3855318 TI - Median palatine cyst. AB - Median palatine cysts are rare, nonodontogenic lesion of the hard palate that do not involve the palatine papilla or incisive canal and that usually present as asymptomatic, fluctuant swellings. They may involve the floor the nasal cavity but are treated by simple enucleation, without recurrence. They are composed histologically of a fibrous collagenous tissue wall, with infiltration of chronic inflammatory cells, and lined by stratified squamous and/or respiratory epithelium. They are differentiated from the nasopalatine and other anterior maxillary cysts by the following diagnostic criteria: Appears grossly to be symmetrical along the midline of the hard palate. Located posterior to palatine papilla. Radiographically ovoid or circular in appearance. Not intimately associated with a nonvital tooth or found to have any communication with the incisive canal. Shows no histologic evidence of nerve trunks, large vascular spaces, hyaline cartilage, or accessory salivary gland tissue in the cyst wall. PMID- 3855319 TI - Acute airway obstruction following tooth extraction in hereditary angioedema. AB - Life threatening airway obstruction occurred following a single tooth extraction in a patient who had hereditary angioedema, despite preoperative administration of FFP and danazol. Emergency intubation was performed in the operating room, and assisted respiration was required during the acute attack. The clinician should be aware that an acute attack of HAE may occur even though recommended medical management regimens are followed and should be prepared for emergency airway control. PMID- 3855321 TI - Rigid stabilization system for maxillary osteotomies. PMID- 3855320 TI - Sialolith in a median anterior maxillary cyst. PMID- 3855322 TI - Aberrations in pulpal histology and dentinogenesis in transplanted erupting teeth. AB - Responses of pulpal tissues were assessed histologically in teeth that had been transplanted after root formation was moderately well advanced. Degeneration occurred in the coronal third, but the area was repopulated by cells proliferating from the center of the pulp. Apically, the tissues, including the odontoblasts, remained vital and functional. Widespread intrapulpal formation of osteodentin was prominent in later observation periods. Apical closure occurred prematurely by production of osteodentin and cellular cementum in the form of an apical diaphragm; these mineralized tissues were confluent with a similarly active deposition of cellular cementum apically on the root surface. PMID- 3855323 TI - Effect of trimetoquinol analogs for antagonism of endoperoxide/thromboxane A2 mediated responses in human platelets and rat aorta. AB - The pharmacological properties of a limited series of tetrahydro-isoquinoline [trimetoquinol (TMQ)] analogs for inhibition of endoperoxide (U46619)-mediated responses in human platelets and rat aorta were examined. All analogs blocked U46619-induced aggregatory and secretory responses in platelets, and contraction of rat aorta in a concentration-dependent manner. R-(+)-TMQ was a competitive type inhibitor of U46619-induced contractions of rat aorta. The relative inhibitory potency for TMQ analogs against U46619-induced effects was TMQ greater than N-methyl TMQ greater than or equal to erythro-alpha-methyl TMQ greater than threo-alpha-methyl TMQ greater than or equal to alpha-dimethyl TMQ. R-(+)-TMQ and the azoprostanoid analog (U51605) were potent antagonists of U46619 action in rat aorta with pA2 values of 5.97 and 5.70, respectively. Other experiments indicated that U51605 was a partial agonist and R-(+)-TMQ was an inhibitor of U51605 induced contractions of rat aorta (pKB = 5.94). R-(+)-TMQ also blocked prostaglandin E2-mediated responses in rat aorta (pA2 = 5.46) but was ineffective as an antagonist of prostaglandin F2 alpha and LTD4 responses in dog iris sphincter and guinea-pig trachea or lung parenchyma, respectively. The data indicate that 1) the TMQ analogs were antagonists of endoperoxide/thromboxane A2 mediated responses in rat aorta and human platelets involving a similar mechanism of action and 2) stereochemical requirements of these TMQ analogs for activation of beta adrenoceptors and antagonism of endoperoxide/thromboxane A2-mediated responses are different. It is concluded that selectivity for these two pharmacological properties of TMQ can be achieved by appropriate stereochemical modification of the tetrahydroisoquinoline nucleus. PMID- 3855324 TI - An in vivo model for squamous cell carcinoma of the head and neck. AB - In recent years, the successful grafting of human tumors into immune deprived animals has spurred the hopes of developing a reliable in vivo model for evaluation of human cancer. The nude mouse has created new perspectives in many different areas of cancer research, and has proved to be the most useful recipient of any animal system for tumor heterotransplantation. This study determined which of several squamous cell carcinoma (SCC) cell lines would reproducibly grow as heterotransplants in nude mice, and allowed an opportunity to determine whether characteristics of the tumor changed as a result of propagation in tissue culture. Sixteen (76%) of the 21 SCC lines heterotransplanted in nude mice remained as viable tumor nodules. Nine (43%) of these lines reproducibly produced progressively enlarging tumor masses. Five (24%) SCC lines failed to grow as heterotransplants. The average lag phase between implantation and the beginning of growth for all SCC lines tested was approximately 7 weeks and emphasizes the need for prolonged observation of nude mice following SCC heterotransplantation. The rate and pattern of growth of SCC in nude mice appears to be related specifically to the tumorigenic factors of a given cell line. The concurrent presence of other SCC or non-SCC tumors in a given mouse do not appear to influence the growth of a specific cell line. In addition, specific host factors that might vary from one mouse to another did not alter the growth patterns of SCC. Histological examination of the SCC lines successfully heterotransplanted in nude mice showed similar histological appearances to the original tumor in the human host. PMID- 3855325 TI - Effect of gemfibrozil on biliary lipid metabolism in normolipemic subjects. AB - The mechanisms of the lipid-lowering agent gemfibrozil on biliary lipid metabolism were studied in eight normolipemic male volunteers. These measurements were performed before and after 3 months of administration. During administration of gemfibrozil, plasma cholesterol decreased by 19% (P less than 0.01) and triglycerides by 46% (P less than 0.01), and HDL cholesterol increased by 10% (P less than 0.01). The lithogenic index in gallbladder bile increased from 0.73 to 1.37 (P less than 0.05) and in hepatic bile from 0.86 to 1.42 (P less than 0.01). The increase in lithogenicity of gallbladder bile and hepatic bile was due to an increased biliary output of cholesterol from 47 to 70 mg/h (P less than 0.01) and a decreased output of bile acids from 943 to 694 mg/hr (P less than 0.01), whereas phospholipid output was not altered. The reduction in bile acid output was a result of a significant decrease in chenodeoxycholic acid secretion (r = 0.852; P less than 0.01). Cholic acid output was not affected by gemfibrozil. These results suggest that administration of gemfibrozil enhances the possible risk of gallstone formation like clofibrate. PMID- 3855326 TI - Acute median nerve compression by haemorrhage from acute myelomonocytic leukaemia. AB - A 61-year-old male receiving treatment for acute myelomonocytic leukaemia (AMML) developed weakness and sensory loss in the thumb, index and middle finger and half of the ring finger of the left hand as a result of a spontaneous haemorrhage into the carpal tunnel and forearm, an unusual cause of median nerve compression. These findings were confirmed by CT scanning and post-mortem examination. This is the first report of spontaneous haemorrhage occurring in a patient with AMML. PMID- 3855327 TI - Pimozide for Tourette's disorder. PMID- 3855328 TI - Familial IgA nephropathy. Evidence of an inherited mechanism of disease. AB - The evaluation of familial glomerulonephritis in patients with IgA nephropathy who were from central and eastern Kentucky resulted in the discovery of potentially related pedigrees containing 14 patients. An additional 17 members of the pedigrees had clinical glomerulonephritis, and 6 had "chronic nephritis" noted on their death certificates. Six patients with IgA nephropathy had a common ancestor. In addition, both parents of six patients with the disease came from families with other cases of IgA nephropathy. No single HLA haplotype or antigen was found in all the patients with IgA nephropathy. Our data on these pedigrees strongly support an inherited mechanism in the pathogenesis of IgA nephropathy in some patients. PMID- 3855329 TI - Case 36-1984: subacute necrotizing leukoencephalopathy after treatment for acute lymphocytic leukemia. PMID- 3855330 TI - Homogeneous clinical subgroups in children with Tourette syndrome. AB - The existence of two clinically homogeneous subgroups in Tourette syndrome, depending upon the presence or absence of migraine or a family history of migraine, is suggested. Patients with Tourette syndrome who have migraine (n = 18) were found to have a significantly higher prevalence of disorders of arousal- particularly sleepwalking and night terrors--as well as a higher prevalence of motion sickness than patients without migraine (n = 27). They were also significantly more likely to exhibit a co-occurrence of associated features (two or more) than the patients without migraine. Patients with Tourette syndrome who have not had migraine headaches but in whom there is a family history for migraine (n = 20) were shown to have an intermediate prevalence of associated symptoms. It is suggested that the differential association for these symptoms in patients with Tourette syndrome may reflect an underlying abnormality in function of two different neurotransmitter systems. PMID- 3855331 TI - Hemorrhage into a hepatic adenoma and type Ia glycogen storage disease: a case report and review of the literature. AB - Older patients with type I glycogen storage disease (GSD) develop hepatic adenomas that may undergo malignant transformation. Despite their similarity to oral contraceptive-related hepatic tumors, only one previous report has even mentioned hemorrhage in GSD-related hepatic tumors. We recently followed a 20 year-old patient with type Ia GSD and a 10 cm focal defect in the left lobe of the liver; angiography suggested that this was a benign adenoma. At 22 years of age, after an acute symptomatic episode, repeat studies (ultrasonography and angiography) revealed a 2 cm increase in diameter of the hepatic mass. Imminent tumor rupture was of grave concern; thus the patient was admitted to the hospital and given 2 weeks of constant glucose administration by central venous line in the hope of improving her metabolic abnormalities. After resolution of the coagulopathy and metabolic disorders, the patient safely underwent surgical enucleation of the tumor. Pathologic examination of the tumor revealed that the patient had indeed hemorrhaged into a typical hepatic adenoma that had focuses of hepatocellular dysplasia. She has done well without evidence of tumor recurrence for 3 years since the operation. We conclude that hemorrhage and malignant transformation are potential complications of GSD-related hepatic adenomas. This conclusion underscores the importance of following these patients closely as they age. Nocturnal nasogastric feeding should be considered in the hope of preventing a tumor or inducing regression. Acute symptomatic attacks should be evaluated promptly for possible tumor hemorrhage. PMID- 3855332 TI - Bowman lecture. The conquest of cataract: a global challenge. PMID- 3855333 TI - Glaucoma assessment by microcomputer. AB - An automated system for comprehensively monitoring glaucoma patients is described. This economic and practical microcomputer data system has been designed to be thoroughly 'clinician oriented' through the collaborative efforts of ophthalmological and computer specialists. It incorporates novel and efficient methods for transferring both automated and manually recorded perimetry data into analysable digital form. The system is inexpensive, simple to use, maintains safe records, allows thorough analysis of patient data, and can considerably reduce the administrative load on ophthalmological clinics. PMID- 3855334 TI - Use of computers in ophthalmology. Leicester Computer Ophthalmology Index. PMID- 3855335 TI - Senile ptosis--introduction and anterior approach. AB - Aponeurotic defects are consistently found in senile ptosis and the ptosis following cataract surgery. Correction by an anterior approach to the levator aponeurosis is satisfactory and has the advantages that excess skin can be excised at the same time and the posterior lid lamella is left intact. Results in 25 patients (36 lids) are reviewed. PMID- 3855336 TI - Combined dye and argon laser treatment for narrow angle glaucoma. PMID- 3855337 TI - Argon laser trabeculoplasty or trabeculectomy a prospective randomised block study. AB - A prospective randomised block study of treatment by either argon laser trabeculoplasty or trabeculectomy was undertaken in patients with chronic open angle glaucoma not controlled by medication. The study was undertaken in two centres in the United Kingdom where the regimes of medical treatment prior to interference were different. Regression analysis showed that in both populations laser trabeculoplasty was effective in reducing the intraocular pressure but it was less effective than trabeculectomy in permanently reducing the intraocular pressure to within normal limits. Laser trabeculoplasty was most effective in those patients whose intraocular pressure was initially high but many of these required post-operative medication or surgery. Laser trabeculoplasty is a useful adjunct to the therapy of open angle glaucoma but it is not a substitute for trabeculectomy as a method of permanently reducing the intraocular pressure to normal. Because of the effectiveness of both these methods of treatment we feel it no longer justified to use anything other than simple local medication to control the intraocular pressure before proceeding to active therapy. PMID- 3855338 TI - Primary therapy for chronic simple glaucoma the role of argon laser trabeculoplasty. AB - This report compares the preliminary findings in three groups of patients suffering from chronic simple glaucoma who were treated with either laser, medicine or surgery, as the primary therapeutic procedure, and followed for a minimum period of six months. It is suggested that there is a place for primary treatment by surgical trabeculectomy in those patients who present with advanced chronic simple glaucoma, while argon laser trabeculoplasty would appear to have a very definite role in the primary treatment of all other patients with this disease. PMID- 3855339 TI - Laser peripheral iridectomy comparing Q-switched neodymium YAG with argon. AB - Twenty-five patients who required bilateral peripheral iridectomies had the right eye treated by the Nd YAG laser and the left eye by the pulsed argon laser. The photodisruption of iris tissued produced by the Nd YAG produces a quicker more efficient iridectomy than the thermal effect of the argon laser with less tendency to healing and inflammation. We conclude that Neodymium YAG laser iridectomy is a safe effective alternative to argon laser iridectomy with no increase in complications during the follow up period and is preferred by the patients. PMID- 3855340 TI - White spots on the optic disc. PMID- 3855341 TI - Laser trabeculoplasty and cataract surgery. AB - We have compared long-term intraocular pressure control in patients with open angle glaucoma, cupping and atrophy of the optic nerve head and visual field loss as well as cataract after: trabeculectomy posterior to the scleral spur and cataract extraction without implantation in 108 patients. guarded posterior lip sclerectomy, cataract extraction and Mark VIII or Mark IX anterior chamber implantation in 28 patients. argon laser trabeculoplasty followed by lens extraction and implantation in 27 patients. Approximately 75 per cent of patients achieve intraocular pressures of 18 mm Hg or less without medication after (a), and approximately 40 per cent of patients achieve similar control without medication after (b). Approximately 25 per cent of these glaucoma patients have intraocular pressure levels of less than or equal to 18 mm Hg on topical medication three months after ALT, and none achieve this control without medication. Cataract surgery with anterior or posterior chamber implantation caused loss of topical control in four of the seven patients benefiting from ALT. These data imply that combined surgery with or without implantation produces better and more significant intraocular pressure control than the presently utilized techniques of ALT subsequently followed by lens extraction and implantation. PMID- 3855342 TI - Computerised perimetry. AB - During the last few years computerised perimetry has become a clinical reality. This new technique eliminates the operator's error, ensures reproducibility of test procedures and parameters and makes visual field testing of large numbers of patients possible. Great differences exist between computerised perimeters. Differences in hardware for example, the way in which stimuli or field charts are produced may be striking but even more important are differences in software, especially test algorithms. The results obtained with some instruments and test programmes are of such high quality that the same level of performance may be almost impossible to obtain with manual perimetry, at least in a clinical setting. Nevertheless, improvements can be expected in the future particularly in adaptive tests and in computerised interpretation of the fields. PMID- 3855343 TI - The use of computers in ophthalmology: an exercise in futurology. AB - Ophthalmological practice will be considerably modified by the use of computers for eliciting medical histories and physical signs, the introduction of 'smart' measuring devices, expert systems for teaching and patient management, and finally, the introduction of machines which can comprehend language: some of the techniques for developing such programs are described. PMID- 3855344 TI - Acute lymphoblastic leukemia of Burkitt's type (L-3 ALL) lacking surface immunoglobulin and the 8;14 translocation. AB - A 25-year-old man developed acute lymphoblastic leukemia, morphologically of Burkitt's type (L3-ALL, F.A.B. classification) but with immunologic and cytogenetic features not previously reported. The leukemic blasts were B1+, CALLA+, OKT3-, and OKT11-. Surface immunoglobulin and cytoplasmic IgM were not detected, but cytoplasmic IgG lambda was present. Karyotypic analysis of 20 metaphases was normal at presentation but abnormal after relapse. At that time, the predominant karyotype was 47XY, 1q-, 7q-, 12p-, M1. This case illustrates the following: (1) Burkitt cell morphology may accompany some uncommon pre-B-cell lymphoblastic leukemias, and (2) rearrangements involving chromosomes 14, 2 or 22 may not be found in all cases of L-3 ALL. PMID- 3855345 TI - The relative merit of various cytochemical quantities and manual differential count in predicting remission following chemotherapy of patients with de novo acute myeloblastic leukemia. AB - Eighteen patients with acute myeloblastic leukemia were monitored using an automated differential analyzer (Hemalog D). Twelve patients achieved complete remission. The fraction of large unstained cells (LUC), lymphocytes (LYMPH), the ratio LUC/LYMPH, WBC, and LUC X WBC as measured on day 12 following start of induction chemotherapy differed significantly between patients who did not respond and patients who did achieve remission. The quantity LUC/LYMPH was by far the best discriminator. In patients who achieved remission, the median value was 0.047 and the range was 0.017-0.088. In patients who did not, the corresponding values were 0.163 and 0.12-0.32. Hemalog D examination of peripheral blood on day 12 after initiation of treatment thus seems to give an early prediction of remission as defined by morphologic examination of bone marrow. PMID- 3855346 TI - The Herbst appliance--its biologic effects and clinical use. AB - The purpose of this article is to survey the Herbst bite-jumping method. An outline of appliance design and appliance construction is given. The effects of the treatment method on the dentofacial complex and on the masticatory system have been analyzed with the aid of dental casts, cephalometric roentgenograms, and electromyographic registrations from the masticatory muscles. The use and effectiveness of the Herbst appliance in the treatment of Class II malocclusions are exemplified by clinical cases, some of which were followed for 5 years after treatment. The Herbst appliance is most effective in the treatment of Class II malocclusions, provided it is used as indicated. Thus, the appliance must be limited to growing persons only. The treatment method should not be looked upon as a last resort to be used only when other treatment approaches have failed. Treatment prognosis is best in subjects with a brachyfacial growth pattern. Unfavorable growth, unstable occlusal conditions, and persisting oral habits after treatment are potential risk factors for occlusal relapses. As treatment with the Herbst appliance is performed during a relatively short period, the hard and soft tissues (teeth, bone, and musculature) would need some time for adaptation to the new mandibular position after the appliance is removed. Posttreatment retention as a routine with a removable functional appliance is therefore recommended. PMID- 3855347 TI - The influence of dentofacial appearance on the social attractiveness of young adults. AB - The purpose of the study was to determine whether the social attractiveness of a young adult would be influenced by his or her dentofacial appearance. Black and white photographs of an attractive male, an unattractive male, an attractive female, and an unattractive female were obtained and modified so that, for each face, five different photographic versions were available. In each version, the face was standardized except that a different dentofacial arrangement was demonstrated. These were normal incisors, prominent incisors, absence of upper left lateral incisor, severely crowded incisors, and unilateral cleft lip. Eight hundred young adults were shown one of the twenty photographs and asked to estimate the represented individual's social characteristics along a number of bipolar scales. Each photograph was viewed by a different group of forty young adults, equally divided as to sex. Their impressions of the depicted individuals' social attractiveness were recorded on visual analogue scales. The experimental procedure was such that the effect and interaction of different levels of facial attractiveness, different dentofacial arrangements, sex of the photographed individual, and sex of the judge could be analyzed. Faces displaying a normal incisor relationship gained the most favorable ratings for eight of the ten characteristics examined, and in four of these differences across the range of dental conditions were statistically significant. These were perceived friendliness, social class, popularity, and intelligence. The prominent incisor condition was rated highest for compliance and honesty, while the condition representing a unilateral cleft consistently attracted low ratings. Background facial attractiveness of either the male or female stimuli was often more assertive than the individual dental condition.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3855348 TI - Stability and relapse of mandibular anterior alignment: a cephalometric appraisal of first-premolar-extraction cases treated by traditional edgewise orthodontics. AB - Assessment at least 10 years postretention of fifty-four cases previously treated in the permanent-dentition stage with first-premolar extractions, traditional edgewise mechanotherapy, and retention revealed considerable variation among patients. The long-term response to mandibular anterior alignment was unpredictable; no cephalometric parameters, such as maxillary and mandibular incisor proclination, horizontal and vertical growth amounts, mandibular plane angle, etc., were useful in establishing a prognosis. Few associations of value were found between cephalometric parameters and dental-cast measurements, such as overbite, arch length, intercanine width, and overjet. Only a slight tendency was found for incisor inclination to return toward the pretreatment value during the postretention period. It was possible to predict, on the basis of an analysis of pre- and posttreatment cephalometric records, those cases which had greater than 4 mm deepening of overbite postretention as well as those cases which had decreases of 3 mm or more in arch-length postretention. The practical use of these predictions were of limited clinical value, however. PMID- 3855349 TI - The effect of extraction of infraoccluded deciduous molars: A longitudinal study. AB - Infraocclusion of deciduous molars is often associated with ankylosis. Such teeth are believed to be potential sites of malocclusion, with a risk of tipping of neighboring teeth and loss of space. Extraction has therefore been the most widely recommended treatment. The aim of this study was to follow longitudinally the effect of extraction versus nonextraction treatment in twenty-three homologous pairs of mandibular deciduous molars with infraocclusion when unilateral extraction was performed. The study comprised fifteen children with a mean age at the start of 10.1 years. Recordings were made at the start of the study and every 6 months thereafter until eruption of permanent successors. Periodic identical periapical radiographs and study models were taken every 6 months. Ten of the twenty-three mandibular deciduous molars on the nonextraction side showed progression of the degree of infraocclusion. All infraoccluded deciduous molars exfoliated within the normal time. There was a normal alveolar bone height on both sides after eruption of the successors. Extraction resulted in a gradually increasing space loss in fourteen of the fifteen children. In two cases a definite space deficiency at the time of eruption of the successors was registered. It has been possible to confirm very few of the previously reported negative effects following nontreatment of infraoccluded deciduous molars on exfoliation, eruption, and occlusal development in this study. The results favor a more conservative approach to extraction therapy of infraoccluded deciduous molars. PMID- 3855350 TI - Orthodontic extrusion of single-rooted teeth affected with advanced periodontal disease. AB - Orthodontic extrusion of teeth with advanced periodontal disease was evaluated in beagle dogs. Surgical destruction of one third to one half of the attachment apparatus and the inducement of chronic periodontal disease was accomplished on the hemisected mesial roots of the mandibular premolars. The roots on one side of the mandible were extruded toward a cemented stainless steel bridge by means of elastics providing 20 to 25 gm of force. The force was examined daily. When extruded teeth came into contact with the bridge, they were ligated in place for 21 days of stabilization. Clinical results showed that control teeth maintained their position and signs of advanced periodontitis. Extruded teeth had shallower pocket depths, less gingival inflammation, and no bleeding on probing. Radiographic evaluation showed no demonstrable changes in the control teeth. Early in the extrusion process, the teeth appeared to be avulsed, with more than three fourths of the root coronal to the alveolar crest. After stabilization, approximately 2 mm of new bone was seen coronal to the original alveolar crest, and the periapical areas had filled in as well. This bone formation was verified histologically. The extruded teeth had an intact attachment apparatus with all components in the same relative position on the teeth as in the controls. However, a shallower sulcus and less gingival inflammation were noted in the extruded teeth. There were statistically significant findings of a wider periodontal ligament space, greater cementum width, and increased bone height in the crestal areas of extruded teeth. Extruded teeth also had less cementum width and greater new bone formation at the apex.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3855351 TI - Comments on condylar growth of the mandible and orthodontic treatment. PMID- 3855352 TI - Prostaglandin F2 alpha improves oxygen tension and reduces venous admixture during one-lung ventilation in anesthetized paralyzed dogs. AB - The authors investigated the effect of prostaglandin F2 alpha infused into the pulmonary artery of an acutely atelectatic lung in dogs. Seven dogs were anesthetized with piritramid and pentobarbital and intubated with a Kottmeier canine endobronchial tube. Cardiac output, pulmonary arterial, capillary wedge, and systemic arterial pressure were measured via indwelling catheters. Ventilating both lungs with 66% O2, PaO2 was 327 +/- 15 mmHg (mean +/- SD) and venous admixture (Qsp/Qt) was 11 +/- 3%. One-lung atelectasis reduced PaO2 to 91 +/- 12 mmHg and increased Qsp/Qt to 40 +/- 4%. Prostaglandin F2 alpha in doses of 0.4, 0.6, 1.2, and 1.8 micrograms X kg-1 X min-1 was infused into the pulmonary artery of the atelectatic lung through a second pulmonary artery catheter. Up to a dose of 1.2 micrograms X kg-1 X min-1 there was a dose-dependent reduction in Qsp/Qt to a minimum of 25 +/- 4% and an increase in PaO2 to 168 +/- 25 mmHg, which could be explained by enhanced pulmonary vasoconstriction in the atelectatic lung with increased blood flow diversion toward the ventilated lung. Infusion of 1.8 micrograms X kg-1 X min-1 decreased PaO2 to 156 +/- 32 mmHg and increased Qsp/Qt to 32 +/- 9%. Increased systemic effects of prostaglandin F2 alpha were observed and presumably were related to saturation of prostaglandin dehydrogenase leading to vasoconstriction in both lungs and thus reduced blood flow diversion toward the ventilated lung. PMID- 3855353 TI - Long-chain fatty acyl-coenzyme A's activate both the ligand-binding and protein kinase activities of phorboid and ingenoid receptor. AB - Modulation of the ligand-binding activity and protein kinase activity of homogeneous phorboid and ingenoid receptor from the brain by various fatty acyl CoAs, fatty acid esters, fatty acids, and detergents was studied. Long-chain fatty acyl-CoAs (C10-C20), like certain acidic phospholipids, activated the ligand-receptor interaction. The extent of activation increased with the increasing chain length of fatty acyl-CoA. Short-chain fatty acyl-CoAs (C0-C6), fatty acids, and fatty acid esters were essentially inactive. Sodium dodecyl sulfate (SDS) also activated the ligand binding, but other detergents (Triton X 100, deoxycholic acid, Nonidet-40, and Tween-80) were ineffective. The combination of phosphatidylserine and stearoyl-CoA was as effective as each agent alone in the activation of ligand-receptor interaction, suggesting similar mechanisms of action. The basal protein kinase activity of phorboid receptor was stimulated by long-chain fatty acyl-CoAs (C10-C20) and SDS in a dose-dependent manner. Km values for ATP and protein substrate were the same in the absence and presence of stearoyl-CoA; however, Vmax was increased in the presence of the active agents. The degree of stimulation of protein kinase activity by stearoyl CoA was independent of receptor protein concentration. Stearoyl-CoA did not significantly influence the activity of the catalytic subunit of cyclic AMP dependent protein kinase. The combined hydrophobic and acidic nature of the active agents appears to be important in activating both the ligand-binding and protein kinase activities of phorboid receptor. PMID- 3855354 TI - Inhibition of protein kinase activity of phorboid and ingenoid receptor by di(adenosine-5')oligophosphate. AB - Di(adenosine-5')oligophosphate nucleotides of general structure ApnA (n = 3-6) inhibited the protein kinase activity of homogeneous phorboid receptor. These nucleotides did not affect the phorboid binding activity. Ap4A competed for an ATP binding site on the phorboid receptor. Km for ATP was increased from 0.5 to 2 microM in the presence of 0.2 mM of Ap4A. KI was calculated to be approximately 0.1 mM. Ap4A-elicited inhibition of phorboid receptor kinase activity was independent of receptor concentration as well as of phosphoacceptor substrate concentration. PMID- 3855355 TI - [Combination therapy with HU IFN-beta and ACNU against malignant brain tumors, Part 1. Experimental study in vitro]. AB - Augmentation of cytotoxicity against malignant glioma using a combination of Hu IFN-beta and ACNU was analyzed in vitro from the points of cell growth inhibition and alteration of the DNA histogram. Cytotoxicity was tested by exposing 13 human glioma cell lines to ACNU at a concentration of 5 micrograms/ml and/or Hu IFN beta at a concentration of 10(3) IU/microliters. These concentrations were considered to be clinical doses. Additive or synergistic effects of the combination of the two agents were observed in all cell lines tested. The cytotoxic effect of two log kill was seen in two cell lines given ACNU treatment alone, one cell line treated with Hu IFN-beta alone, and nine treated with the combination. Flow-cytometry studies of the DNA histogram showed accumulation in the G2+M phase with ACNU and in the S phase with Hu IFN-beta. On the other hand, marked accumulation using the combination in the S phase followed by the G2+M phase was observed and this accumulation lasted for over a week. The present results show an augmentation of antitumor activity and suggest the effectiveness of combined Hu IFN-beta/ACNU therapy in the treatment of patients with malignant glioma. PMID- 3855356 TI - Distinctive acral erythema occurring during therapy for severe myelogenous leukemia. AB - A distinctive acral erythema developed in four patients with myelogenous leukemia, subsequent to blood transfusions and intensive chemotherapy with cytarabine. The clinical and histopathologic features of the eruption were suggestive of a drug-induced toxic eruption. To our knowledge, only one previous similar case has been reported in the literature. For patients in whom this self limited condition develops, reassurance should serve as the mainstay of therapy. PMID- 3855357 TI - Familial hypokalemic periodic paralysis. 50-year follow-up of a large family. AB - A large family with hypokalemic periodic paralysis was reexamined after 50 years. Two new cases were found in the third generation and 12 in the fourth generation. This family now includes 28 affected patients in four generations. The reexamination ascertained the presence of permanent muscle weakness (PMW) in all investigated affected sibs. This fact, and the fact that indications of the presence of PMW without paralytic attacks were found in only one subject, is strong evidence that both are manifestations of the same more or less fully penetrant dominant gene. A linkage study in this family could not localize the gene on the human genome, but close linkage with 25 genetic marker systems could be excluded. PMID- 3855358 TI - Sulfation of peptides and simple phenols by rat brain phenolsulfotransferase. Inhibition by dichloronitrophenol. AB - Brain phenolsulfotransferase (PST) is involved in the sulfation of simple phenols like dopamine and of precursors of biologically active peptides like cholecystokinin octapeptide (CCK-8). Therefore, inhibition of brain PST would provide a new approach to studying the sulfation of CCK-8 and other sulfated compounds. Since 2,6-dichloro-4-nitrophenol (DCNP) produces a prolonged and selective inhibition of the sulfoconjugation of exogenous phenols by the liver, we decided to examine the applicability of DCNP to studies of sulfation of CCK-8 and other compounds by brain. DCNP was capable of completely inhibiting PST activity in rat brain homogenates incubated with p-nitrophenol, phenol or dopamine as substrates. The IC50 values for p-nitrophenol and dopamine were 12 and 14 microM respectively. The concentrations of DCNP in brain cortex and plasma were measured by high pressure liquid chromatography (HPLC) after a dose of 100 mumoles/kg, i.p. Peak concentrations of 380 microM in plasma and 25 mumoles/kg in brain were achieved 30 min after injection. Subsequently, DCNP concentrations decreased with half-lives of 8 and 6 hr in plasma and brain cortex, respectively. To establish if DCNP can inhibit CCK sulfation in vivo, rats were injected with 100 micromoles/kg, i.p., of the drug 30 min before injection of 35SO4(2-) into the cerebral cortex and were killed 4.5 hr later. DCNP caused a 55% inhibition of [35S]CCK-8-SO4 formation as measured by HPLC. No change in the content of endogenous CCK-8-SO4 was detectable, however, in the brain cortex of rats treated with DCNP for up to 4 days, indicating that the PST which remained active was capable of maintaining CCK-8 content at steady state. PMID- 3855359 TI - Secretion of transforming growth factors by primary human tumour cells. AB - We examined the ability of primary human tumour cells to secrete diffusible factors capable of stimulating anchorage independent growth of normal rat kidney fibroblast (NRK) cells. Conditioned media (CM) prepared from cells derived from 31/43 patients with adenocarcinoma of the breast, colon, ovary or lung were found to induce growth of NRK cells in soft agar. The ability of the CM to induce anchorage independent growth was enhanced in 25/35 cases by the presence of epidermal growth factor (EGF). The CM did not compete with EGF for binding to the EGF receptor site. CM from cells derived from nonmalignant effusions also supported the growth of NRK cells in soft agar. There was no significant difference in the ability of the CM derived from malignant or normal cells to support NRK colony growth. The ability of primary human tumour cells to clone in soft agar was compared to the ability of these cells to produce diffusible colony stimulating factors for NRK cells. No correlation was observed between the ability of the primary human tumour cells to clone in soft agar and their ability to induce anchorage independent growth of NRK cells. The secretion of substances with TGF like activity may be a property of many types of primary human cells. PMID- 3855360 TI - Prostaglandin E2 transport in rabbit renal basolateral membrane vesicles. AB - We examined the mechanism of prostaglandin E2 transport in rabbit renal basolateral membrane vesicles which were predominantly oriented right-side-out. In the presence of an inwardly directed H+ gradient, the initial rate of uptake was markedly accelerated and the influx of prostaglandin E2 resulted in a transient accumulation (overshoot) above the equilibrium value. Both H+ independent and H+-stimulated prostaglandin E2 uptake were shown to be insensitive to valinomycin-induced K+ diffusion potentials. Intravesicular probenecid inhibited the pH gradient-stimulated uptake of prostaglandin E2 but did not affect the pH-stimulated uptake of thiocyanate and acetate which enter membranes via ionic and nonionic diffusion, respectively. Finally, the existence of a Na+ cotransport or of a K+ antiport pathway for prostaglandin E2 could not be demonstrated. Thus, these data demonstrate the presence of an electrically neutral H+-prostaglandin E2 cotransport or OH- -prostaglandin E2 antiport mechanism in the basolateral membrane of the rabbit proximal tubule. PMID- 3855361 TI - Inhibition of Friend cell erythrodifferentiation by modification of membrane phospholipid composition by choline analogues. AB - Dimethylsulfoxide-stimulated Friend leukemia cell erythrodifferentiation was inhibited by choline analogues such as N-monomethylethanolamine and N,N dimethylethanolamine. Phosphatidyl-N-monomethylethanolamine and phosphatidyl-N,N dimethylethanolamine were then accumulated in the cell membranes. N Monomethylethanolamine also inhibited Friend leukemia cell erythrodifferentiation stimulated by hexamethylene bisacetamide and N-methylacetamide, but did not inhibit differentiation induced by sodium butyrate. This inhibitory effect of N monomethylethanolamine was partially abrogated by spermine. PMID- 3855362 TI - Expression of Ia antigens on myeloid progenitor cells in chronic myeloid leukemia: direct analysis using partially purified colony-forming cells. AB - The regulation of Ia (HLA-DR) antigen expression on myeloid progenitor cells may be closely related to the control of myelopoiesis in both normal individuals and chronic myeloid leukemia (CML) patients. In an effort to study directly the expression and behavior of Ia surface molecules on myeloid progenitor cells, we used an immunologic purification technique to enrich these cells approximately 100-fold from the peripheral blood of CML patients. The majority of cells in this blast population expressed HLA-DR antigens. Thirty percent to 40% of cells could form a granulocyte or monocyte colony in agar, and these cells tended to express the highest levels of HLA-DR. The number of HLA-DR molecules per cell increased about twofold as the cells tranversed the cell cycle from G0/G1 to G2/M. This was true for unstimulated cells or cells exposed to colony-stimulating factors. Some of this increase was related to a corresponding increase in cell size and is also seen with other cell surface antigens such as beta-2-microglobulin. Ia antigen expression was not modified by culture with colony-stimulating factors, fetal calf serum, or serum-free, prostaglandin-free medium for periods of up to 24 hours. These results demonstrate that Ia antigens are expressed on the myeloid progenitor cells of CML, are increased in the S and G2/M phases of the cell cycle, and are stable under most in vitro culture conditions for at least 24 hours of culture. PMID- 3855363 TI - Large granular lymphocytes have a promoting activity on human peripheral blood erythroid burst-forming units. AB - Peripheral blood mononuclear cells were fractionated according to the expression of a variety of surface markers, and the fractions obtained were tested for erythroid burst-forming unit (BFU-E) colony formation. BFU-Es were detected in the HLA-DR+ non-T cell fraction, but gave rise to optimum colony numbers only in the presence of a nonadherent, relatively radioresistant cell. This accessory cell was found among the HLA-DR- non-T, non-B cells, a fraction that was particularly enriched in large granular lymphocytes (LGLs). Experiments carried out to assess directly the surface markers of the accessory cell revealed an FcR+, OKM1+, Leu 7+, Leu 11+, OKT4-, OKT8- surface phenotype, which is consistent with that of the majority of LGLs. Peripheral blood LGLs, purified by Percoll density gradient, proved very efficient in promoting optimal BFU-E colony formation. All of these results indicate that LGLs have a potent erythroid burst promoting activity. Such activity is probably mediated through the release of soluble factors, as shown by the observation that LGL culture supernatants were as effective as LGLs in sustaining colony formation. PMID- 3855364 TI - Acute myelomonocytic leukaemia with abnormal eosinophils and inversion of chromosome 16. AB - We report a further case of a recently recognized variety of acute myelomonocytic leukaemia (M4 subtype) with bone marrow eosinophilia and inversion of chromosome 16. The eosinophils showed a distinctly abnormal morphology, cytochemical staining and ultrastructure. PMID- 3855365 TI - Thromboembolic complications associated with L-asparaginase therapy. Etiologic role of low antithrombin III and plasminogen levels and therapeutic correction by fresh frozen plasma. AB - A case of an 18-year-old woman with acute lymphoblastic leukemia who developed L asparaginase-associated stroke and subclavian vein thrombosis is presented. The latter was also associated with a Hickman central venous catheter. Thrombotic complications occurred when plasma levels of plasminogen and antithrombin III were still markedly reduced as a result of L-asparaginase therapy, although the fibrinogen had recovered from its lower levels. The stroke was treated with fresh frozen plasma and the subclavian vein thrombosis was treated with streptokinase and fresh frozen plasma. L-asparaginase and Hickman-associated coagulopathy is reviewed and the treatment is discussed. PMID- 3855366 TI - Chromosome changes and splenectomy in Ph-positive CML. III. Predictive parameters in the chronic phase. AB - The findings presented indicate that splenectomy during the blastic phase (BP) of Philadelphia (Ph) positive chronic myeloid leukemia (CML) prolonged survival after the onset of the BP in a group of patients who had, in addition to the Ph, only chromosomally abnormal cells in the marrow (AA patients). To evaluate the predictive parameter for splenectomy in the chronic phase (CP) of CML, the cytogenetic data obtained during the CP of the AA group were compared retrospectively with those of cytogenetically defined groups. Only AA patients showed the presence of abnormal clone(s) containing abnormalities such as trisomy 8, i(17q), and a missing Y chromosome several years before the onset of BP. This may indicate that the presence of these chromosome abnormalities during the CP could be utilized as a predictive parameter for splenectomy in the CP of CML. PMID- 3855367 TI - Cytogenetic study of patients with carcinoma of the colon and rectum: particular C-band variants as possible markers for cancer proneness. AB - A possible involvement of chromosomal heterochromatic polymorphisms in propensity to cancer has been considered and discussed by several investigators who studied groups of patients presenting with different forms of malignancy. We report a cytogenetic study on the circulating lymphocytes of patients suffering from colorectal carcinoma, most of whom were of European origin. Significantly increased incidence of polymorphisms of chromosomes #1 and #9 was found, especially partial inversions (PI). Emphasis is given to the problem of selecting adequate controls, which must be as homogeneous as possible. PMID- 3855368 TI - Cytogenetic and ultrastructural studies on ten patients with acute promyelocytic leukemia, including one case with a complex translocation. AB - Chromosomal banding analyses and ultrastructural studies were performed on ten cases of acute promyelocytic leukemia (APL-M3). A reciprocal translocation, t(15q + ;17q-), was found in six of them, and the possible breakpoints of these chromosomes were assigned at bands 15q22 and 17q12. In addition, trisomy 8, trisomy 8 and 21, and an isochromosome of the long arm of the translocated #17, i(17q-), were observed in addition to the 15;17 translocation in three cases, respectively. Furthermore, one patient was found to have a complex translocation in the marrow cells, i.e., 47,XX,+X,t(1p+;5q-;15q+;17q-). Ultrastructural studies demonstrated that the leukemic cells obtained from six of the seven patients with the chromosomal changes involving 17q12 and from two of the three with normal karyotypes contained stellate rough surface endoplasmic reticulum (stellate rER) complexes and/or inclusion bodies in part of the dilated rER. PMID- 3855369 TI - Proliferative characteristics and sister chromatid exchange (SCE) of colony forming cells (CFU-S) in acute myelogenous leukemia. AB - Sister chromatid exchange (SCE) and cell cycle progression of colony-forming cells (CFU-S) from patients with acute myelogenous leukemia were studied using bromodeoxyuridine (BrdU) incorporation and sister chromatid differential staining. The mean SCE rate of CFU-S was 7.99, which is similar to that reported for human peripheral blood lymphocytes. Cultures treated with BrdU at culture initiation and then harvested 72-120 hr later indicated a cell cycle time (TC) of approximately 60 hr. However, cells allowed to proliferate for 72-120 hr prior to the addition of BrdU showed TC values of 12-36 hr. Analysis of serial cultures from one patient revealed a heterogeneous population with a mean TC of 19.5 hr. These cell cycle times are considerably shorter than previously published reports and suggest that leukemic cells have the potential to divide rapidly. PMID- 3855371 TI - Philadelphia chromosome (Ph) positive chronic myelocytic leukemia (CML): frequency of additional findings. AB - This article documents the cytogenetic findings in 79 patients with typical Ph positive chronic myelocytic leukemia (CML). Direct preparations of bone marrow and/or peripheral blood of 46 males and 33 females were studied with different banding techniques. Seventy patients were studied during chronic phase. Three (4.3%) had unusual or complex translocations: t(6;22)(p21;q11), t(8;12;9;22)(p21;q21;q34;q11), and t(9;11;22)(q34;q13;q11). One (1.4%) had a +Ph, 1 (1.4%) had a +8, 1 (1.4%) had a del(3)(p13,p23), and 4 of 30 males (13.3%) showed loss of Y chromosome. Five of 8 cases studied during blast crisis had additional abnormalities. The +8 occurred in 4 cases, +10 and +19 each in 3 cases, +6, + 9q+, and +13 each in 2 cases, and +5, +11, +14, +21, +Ph, i(17q), dic(1;9), and structural abnormalities of chromosomes #1, #5, #12, and #13 each in 1 case. Two cases studied in blast crisis alone had complex translocations leading to the Ph. Because it cannot be ruled out that these translocations are secondary, they were not included in the calculation of the frequency of atypical translocations. PMID- 3855370 TI - Value of cytogenetic studies in prediction of acute phase CML. AB - Twenty-five patients with Ph CML who eventually developed a blast crisis were karyotyped at regular intervals in order to correlate the evolution of abnormal clones with clinical changes. Persistent new clones appeared in the chronic phase, prior to either transition or transformation, or in the acute phase (the latter, particularly, where transformation was slow). In many patients, chromosome changes accumulated within a single abnormal clone as the disease progressed. In others, particularly where the simple Ph cell line was slow to be supplanted, new clones appeared from the remaining Ph cells at the time of transformation, perhaps reflecting the inability of certain chromosome abnormalities to coexist. We suggest that the occurrence of additional chromosome abnormalities is not reliable evidence of acute transformation, but that the nature and subsequent behavior of abnormal clones may provide more valuable indications. PMID- 3855372 TI - Isochromosome 17q in Ph-negative chronic myelocytic leukemia. AB - No Ph chromosome was found in three clinically suspected chronic myelocytic leukemia (CML) patients, although one had metaphases with trisomy 13. An isochromosome of the long arm of chromosome 17 [i(17q)] was found in these patients when two of them were in acute blastic crisis (ABC) and the other in an early stage of transformation. Although an i(17q) is frequently seen in ABC of Ph positive CML, it is rarely reported in Ph-negative CML. The finding of an i(17q) chromosome in Ph-negative CML appears to indicate, as in Ph-positive CML, that the disease is transforming into ABC. A series of cytogenetic studies in this group of patients may possibly aid in predicting the patients' pending ABC and may also lead to understanding the pathogenesis of ABC. PMID- 3855373 TI - Chromosome fragile sites. PMID- 3855374 TI - Isochromosome X in acute myeloblastic leukemia. AB - An aberrant leukemic clone with a 46,X,i(Xq) karyotype appeared at the first relapse of the disease in a case of acute myeloblastic leukemia (AML). The DNA replication pattern displayed asynchronous late termination within the homologous arms of the isochromosome in all investigated metaphases. The origin of asynchrony in the isochromosome's DNA replication pattern is discussed. PMID- 3855375 TI - Sister chromatid exchanges in leukemic patients. AB - Sister chromatid exchange (SCE) was studied in PHA-stimulated peripheral blood lymphocytes from 36 newly diagnosed and untreated leukemic patients: 16 with acute lymphoblastic leukemia (ALL), 10 with acute nonlymphocytic leukemia (ANLL), and 10 with chronic myelocytic leukemia (CML). The metaphases analyzed show no chromosomal abnormalities. The mean SCE frequency (mean +/- SE) for each group of patients was: 6.8 +/- 0.4, 6.6 +/- 0.3, and 7.0 +/- 0.6 per mitosis, respectively, which was significantly lower than the mean SCE score for 30 controls (8.7 +/- 0.2). No differences in SCE score among ALL, ANLL, and CML and a similar SCE frequency by chromosome number and group allowed consolidation of all the cases into a single group of 36 leukemic patients (6.8 +/- 0.3). When the frequency of SCE was compared by chromosome number and group between the leukemic patients with the control group, a significant decrease in SCE frequency was observed due to a low SCE score in almost all the complements, except chromosome #1. It is suggested that the low SCE rate is related to the leukemic process itself. PMID- 3855376 TI - Chromosomal characteristics of chronic and blastic phases of Ph-positive chronic myeloid leukemia. AB - To evaluate the appearance of chromosome changes, in addition to the Philadelphia (Ph) chromosome, as predictive and diagnostic parameters of transformation in chronic myeloid leukemia (CML), such changes were analyzed in the chronic phase (CP) and compared with those of the blastic phase (BP) of CML. The common chromosome changes observed in the CP were loss of a Y (-Y), trisomy 8 (+8), an isochromosome for the long arm of chromosome #17 [i(17q)], a double Ph (+Ph), reciprocal translocations, and partial deletions. In most patients with chromosome changes in addition to the Ph, the percentage of abnormal clones increased steadily during the CP and was accompanied by other chromosome changes shortly before or at the onset of the BP, except for cases with -Y or i(17q) clones. In general, most chromosome changes observed shortly before or at the BP were complex. These facts suggest that complex chromosome changes could be utilized as predictive and diagnostic parameters of blastic transformation in CML. PMID- 3855377 TI - t(11;19)(q23;p11) in a child with acute T-cell leukemia. AB - A translocation, t(11;19)(q23;p11), is reported in a child with T-cell leukemia. Our case indicates that the t(11;19) may not be restricted to the monocytic leukemias, as earlier reported, but may occur in other malignancies. PMID- 3855379 TI - Chronic myelocytic leukemia with mirror image duplication of chromosome 22: 46,XY, pq+t(22q-;22q-). PMID- 3855378 TI - Cytogenetic findings in childhood acute lymphoblastic leukemia. AB - Chromosome studies were performed on the bone marrow cells of 42 children with newly diagnosed acute lymphoblastic leukemia (ALL). All the children were subsequently treated with the same protocol. Chromosomal abnormalities were found in 25 patients, i.e., in 59.5% of the cases. Hyperdiploidy was observed in 21.4% hypodiploidy in 14.3%, and pseudodiploidy in 23.8% of the children. The most frequent structural aberrations were translocations, which were found in half of the patients with abnormal karyotypes. Chromosomes #5, #6, #7, #9, #14, #17, and #21 were involved in different types of changes most frequently. Because these findings correspond with observations published by others, they can be regarded as evidence of nonrandom involvement of these chromosomes in rearrangements in ALL. Special attention should be also paid to the deletion of 6q, which seems to be relatively common in ALL. In 12 cases, clonal evolution of karyotypic changes was observed. PMID- 3855380 TI - Flow cytometric analysis of pentakis(aziridino)thiatriazadiphosphorine oxide (SOAz)-induced changes in cell cycle progression of HeLa and HL-60 cells. AB - The treatment of HeLa and HL-60 cells with various concentrations of pentakis(arizidino)thiatriazadiphosphorine oxide results in inhibition of growth and modification of cell cycle distribution. These phenomena were observed at 10( 4) M and 5 X 10(-5) M for HeLa cells and 10(-5) M and 5 X 10(-6) M for HL-60 cells. The estimation of DNA content by flow cytometry showed an important shift in the distribution of cycling cells with a striking arrest in G2 for both cell lines with a concomitant late S-phase accumulation for HeLa cells. Incubation of cells in drug-free medium 3 days after treatment did not show any change in DNA distribution, suggesting the irreversibility of drug action. PMID- 3855381 TI - Relationship of c-myc expression to differentiation and proliferation of HL-60 cells. AB - We have compared changes in c-myc expression in HL-60 promyelocytic leukemia cells induced to differentiate by dimethyl sulfoxide or growth inhibited in an undifferentiated state. Under these conditions, c-myc expression did not correlate with the proportion of proliferating cells. The kinetics of the decrease in c-myc expression upon differentiation induction is paralleled closely by an increasing proportion of histochemically detected differentiated myeloid cells and by a decrease in clonogenic potential but not by changes in the proportion of proliferating cells. Changes in c-myc expression subsequent to differentiation induction can therefore be directly related to the differentiation process rather than to a cell cycle-related phenomenon. PMID- 3855382 TI - High-dose ifosfamide in advanced osteosarcoma. AB - In a prospective study, 18 evaluable patients with recurrent osteosarcoma were treated with ifosfamide, 1.8 g/m2 daily for 5 consecutive days. Courses were repeated every 4 weeks. Additional mesna (2-mercaptoethane sulfonate) was given to prevent urotoxicity. All patients had measurable lung deposits and all but one had been pretreated with various cytotoxic agents. Six patients (33%) showed therapeutic response, two complete and four partial, with a median duration of 5.5 months (range, 3-47+). Toxicity included myelosuppression, alopecia, nausea, and vomiting. No severe urotoxicity or central nervous system toxicity was observed. Thus, high-dose ifosfamide in combination with mesna seems to be a safe and effective agent for the chemotherapy of osteosarcoma. PMID- 3855383 TI - Treatment of ocular leukemia with local chemotherapy. AB - Two cases of human ocular leukemic recurrence were treated by combined local chemotherapy. Both cases were histologically proven with aspiration needle biopsy and successfully treated with subconjunctival injections of methotrexate, cytarabine, and corticosteroids. PMID- 3855384 TI - Phase II trial of 4'-epi-doxorubicin in advanced carcinoma of head and neck origin. AB - Thirty-one patients with advanced head and neck cancer were treated with 4' epidoxorubicin. Three of 25 evaluable patients with squamous cell carcinoma and two of three with minor salivary gland carcinoma had partial remissions. Four patients received cumulative doses of 680-1270 mg/m2; none developed clinical heart failure. PMID- 3855385 TI - Phase II trial of 4'-epi-doxorubicin in advanced colorectal carcinoma: a Northern California Oncology Group study. PMID- 3855387 TI - A putative nitrogenase reductase gene found in the nucleotide sequences from the photosynthetic gene cluster of R. capsulata. PMID- 3855386 TI - Phase I-II trial of mitoxantrone in acute leukemia. AB - Mitoxantrone was evaluated in a multi-institution trial to define the effective dose for treating acute leukemia, to evaluate its toxicity, and to assess the induction rates for the different types of acute leukemia. Fifty-seven patients have been treated. Of the 24 patients receiving mitoxantrone (10 mg/m2/day X 5), one of nine with acute nonlymphoblastic leukemia (ANLL) in relapse, one of five with acute lymphoblastic leukemia in relapse, and one of seven with blastic chronic myelogenous leukemia achieved remission. At a dose of 12 mg/m2/day X 5, seven of 16 patients with ANLL in relapse, none of six with acute lymphoblastic leukemia in relapse, and one of five with blastic chronic myelogenous leukemia achieved remission. At both dose levels, there was no response in patients who had failed to achieve a prior remission. Toxic effects included nausea/vomiting, stomatitis, and hepatic dysfunction. Nine of the 57 patients treated experienced cardiac events but cardiac toxicity seemed clinically significant in only three. We conclude that mitoxantrone, at a dose of 12 mg/m2/day X 5, is effective therapy for ANLL. Trials combining mitoxantrone with other agents are needed. PMID- 3855388 TI - Cellular site and mode of Fv-2 gene action. AB - The Fv-2 genotype of erythroid progenitors directly determines whether they will undergo viral-induced transformation. This conclusion was reached from studies of allophenic mice compounded from congenic C57BL/6 strains differing at Fv-2 and an enzyme marker (GPI). Infection of these Fv-2ss in equilibrium Fv-2rr mosaic animals with the polycythemic strain of Friend virus results in the development of Friend disease. Concomitant with disease symptoms is a shift in the mosaic composition of the erythrocytes in favor of those of the susceptible strain. The observed viral-induced shift in the erythrocyte composition is paralleled by a similar change in the mosaic composition of the CFU-E pool but not the primitive (d8) BFU-E pool. Thus, with regard to this particular Fv-2 phenotype (susceptibility to FV-P-induced cellular hyperplasia), Fv-2 manifests itself specifically in the erythroid lineage, either in mature (d3) BFU-E or CFU-E. PMID- 3855389 TI - Transfer of osteosarcoma-specific cell-mediated immunity in hamsters by rabbit dialyzable leukocyte extracts. AB - We have investigated the transfer of specific cell-mediated immunity (CMI) to osteosarcoma-associated antigens (OSAA) to hamsters with dialyzable leukocyte extracts (DLE) from OSAA-immunized rabbits. The transfer of specific CMI was determined by leukocyte adherence inhibition (LAI) assay and skin testing. DLE was prepared from rabbits immunized with OSAA, purified protein derivative (PPD), or fibrosarcoma cell plasma membrane preparation (FSM). Control DLE was prepared from rabbits injected with 0.85% NaCl. Significant leukocyte adherence inhibition was observed with leukocytes from hamsters that had received OSAA-specific, PPD specific, and FSM-specific rabbit DLE, when OSAA, PPD, and FSM were used as antigens, respectively. Similarly, significant ear swelling after injection of OSAA, PPD, or FSM was observed only in hamsters that had received DLE from rabbits immunized with OSAA, PPD, or FSM, respectively. These results suggest that CMI specific for OSAA, PPD, or FSM can be transferred to normal hamsters by DLE from immunized rabbits. PMID- 3855390 TI - Antibody to G-actin in different categories of alcoholic liver disease: quantification by an ELISA and significance for alcoholic cirrhosis. AB - Autoantibodies to smooth muscle (ASMA), and to actin which is a major determinant of such reactivity, were measured in the serum of 94 patients with three defined categories of alcoholic liver disease, fatty liver, alcoholic hepatitis, and alcoholic cirrhosis, and in controls matched individually by age and sex with the patients. Autoantibody to monomeric G-actin was detected by an ELISA and autoantibody to polymeric F-actin by immunofluorescence staining of fibroblast stress fibers in cultured cells. Values for the ELISA were expressed as a percentage of the value for a strongly reactive standard serum. The mean value for antibody to G-actin in 40 patients with alcoholic cirrhosis (70 +/- 33%) was significantly greater than that for the matched controls (28 +/- 18%), but the mean value for the 30 patients with alcoholic hepatitis (46 +/- 16%) and the 24 with fatty liver (42 +/- 24%) did not differ significantly from the controls. High levels of reactivity with G-actin correlated significantly with HLA B7. ASMA was demonstrable to low titer in 11 of the 94 sera, and positive ASMA reactions by immunofluorescence correlated with high binding values to G-actin in the ELISA. Antibody to F-actin was found in only one serum and no controls. Thus in different liver diseases the reactivity of antibodies to monomeric G-actin and polymeric F-actin may differ, presumably because of specificity for different determinants of the actin molecule. Reactivity to G-actin may distinguish a group of alcoholic subjects in whom a predisposition to autoimmune reactivity is one of the determinants of progression of liver damage to cirrhosis. PMID- 3855391 TI - A rapid alternative to the clonogenic assay for measuring antibody and complement mediated killing of tumor cells. AB - A study of the methods used to quantitate killing of tumor cells by antibody and complement has highlighted a number of problems. Using leukemia as a model we have found that the release of 51Cr from labeled tumor cells treated with antibody and complement can be an equivocal measure of cell viability. Combined with its restricted sensitivity (less than a 2 log range of cell killing) this makes this widely used assay of questionable value for detecting small numbers of viable cells, or for identifying subpopulations of complement-resistant cells. As an alternative we have developed a [125I]iododeoxyuridine (125IUdR) uptake assay, that combines the simplicity and rapidity of the 51Cr release technique with the sensitivity of a clonogenic assay. This method eliminates the problem of spontaneous isotope release, inherent in prelabeling assays, and variability from experiment to experiment can be avoided by including a viable cell standard curve within each assay. The sensitivity of the 125IUdR uptake method, which can be completed within a day, is similar to that of a 10 day methylcellulose cloning assay and was capable of detecting the presence of a minor subpopulation of complement-resistant tumor cells. PMID- 3855392 TI - Function following mega total hip arthroplasty compared with conventional total hip arthroplasty and healthy matched controls. AB - Total hip arthroplasty (THA) with the use of a Mega prosthesis was a successful surgical procedure in the management of tumors of the hip as well as in revision THA with loss of bone stock. Passive hip motion and strength of hip muscles, walking ability, and activities of daily living in nine such cases compared well with the function following conventional THA. Limp and positive Trendelenburg sign were more common after Mega THA. Dislocation of the prosthesis occurred in 2/14 cases. Fracture of the femoral condyle occurred in one case. Another case had stem fatigue failure of a thin stem. PMID- 3855393 TI - Leukemia cutis mimicking stasis dermatitis. AB - A patient with chronic myelogenous leukemia (CML) in blast crisis experienced a peculiar painful eruption on his left lower extremity during the preterminal phase of his disease. The lesion was characterized by tender, edematous, purpuric infiltration which resembled stasis dermatitis clinically. Dermatopathologic examination demonstrated leukemia cutis. PMID- 3855394 TI - Acute myelomonocytic leukemia. Demonstration of pulmonary involvement by bronchoalveolar lavage. AB - Massive pulmonary infiltration by leukemic cells resulting in respiratory symptoms is a rare complication of acute leukemia. We report the findings in a patient with acute myelomonocytic leukemia presenting with acute onset of fever, dyspnea, and nonproductive cough, in whom the diagnosis of pulmonary invasion by leukemic cells was made by cytochemical analysis of bronchoalveolar cells recovered by lavage. PMID- 3855395 TI - Cell-cycle, protein content, and nuclear size in acute myeloid leukemia. AB - Simultaneous analysis of DNA and cellular proteins provides information on cell proliferation and metabolism. Cellular protein content coupled with nuclear geometric parameters can be used to evaluate cellular maturation and differentiation. In this study, leucoblasts from 50 cases of adult acute myeloid leukemia were analyzed by flow cytometry, and semiautomatic morphometry was performed on bone marrow smears. Ethanol-fixed bone marrow blast cells were stained for DNA with propidium iodide (PI) and for proteins with fluorescein isothiocyanate (FITC). On the resulting FITC versus PI histograms we defined the cells with low protein content which are associated with a nonproliferating subpopulation (LPC fraction). Low protein content fraction and S-phase are correlated (p less than 0.01). The LPC fraction values are more dispersed than S phase values and thus should indicate more clearly eventual differences between cellular populations. This hypothesis has been tested with the prognostic significance of cell-cycle variables: The LPC fraction was significantly higher in the complete remission group than in the other (p less than 0.01), while S phase did not show any difference. The peak value of the protein content histograms is significantly lower in the granulocytic leukemias (M1, M2, M3) than in the leukemias with a monoblastic component (M4, M5). Furthermore, we showed that the differentiation and the maturation of the myeloid blast cells modify the nuclear size. The combination of these two parameters provides useful information for cytological classification. PMID- 3855396 TI - Differentiation of HL-60 promyelocytic leukemia cells monitored by flow cytometric measurement of nitro blue tetrazolium (NBT) reduction. AB - Reduction of nitro blue tetrazolium (NBT) to insoluble blue formazan granules occurs during the stimulus-induced respiratory burst of mature granulocytes and is routinely used as an indicator of the extent of granulocytic differentiation of HL-60 acute promyelocytic leukemia cells. In the present study, the differentiation of HL-60 leukemia cells induced by dimethylsulfoxide (DMSO) or retinoic acid was monitored by flow cytometric (FCM) measurement of forward and 90 degree light scatter of NBT treated cells. Two-parameter correlated analysis permitted a distinction between cells with increased forward and decreased 90 degree light scatter (NBT-), and cells with decreased forward and increased 90 degree light scatter (NBT+). Fixation of NBT treated cells with 1% paraformaldehyde facilitated flow cytometric analysis, and allowed differences in NBT reduction to be quantitated. DMSO-induced cells expressed an all-or-none reduction of NBT to formazan, compared with retinoic acid treated cells that exhibited a graded response. Three parameter flow cytometric analysis of HL-60 leukemia cells stained with propidium iodide in combination with NBT allowed the determination of the cell cycle distribution of NBT-treated cells. PMID- 3855397 TI - Evidence for independent 11-oxidase and 11-reductase activities of 11 beta hydroxysteroid dehydrogenase: enzyme latency, phase transitions, and lipid requirements. AB - Experimental modification of the membrane structure of rat liver microsomes affected the behavior of the 11-oxidase and 11-reductase components of 11 beta hydroxysteroid dehydrogenase in different ways. 1) The latency of 11-oxidase was released by detergents, phospholipases, or elevated temperature; 11-reductase activity was not increased by these manipulations. 2) 11-Reductase was rapidly inactivated at 25 C and 37 C; 11-oxidase was stable at these temperatures. 3) Arrhenius plots of microsome bound 11-reductase between 5 C and 40 C showed discontinuity at 23 C. Activation energies above and below the critical temperature were 2 kcal and 16 kcal, respectively. Solubilized 11-reductase showed no discontinuity [activation energy (Ea) = 15 kcal]. Ea for 11-oxidase was 15 kcal at all temperatures for membrane bound or solubilized enzyme, with no discontinuities. 4) Phospholipases A2 and C rapidly inactivated 11-reductase. Triton DF-18 regenerated 50% of the reductase activity of phospholipase C-treated microsomes, but had no effect on phospholipase A2-treated microsomes. Phospholipases increased 11-oxidase activity. The independent behavior of corticosteroid 11-oxidase and 11-reductase are consistent with the properties of closely associated, independent enzymes. PMID- 3855398 TI - Inhibition by prostaglandin E2 of renal effects of calcitonin in rats. AB - To investigate the possible role of prostaglandin E2 (PGE2) in modulating the actions of PTH and calcitonin (CT) in the kidney, the effects of PGE2 were examined on the in vivo conversion of [3H]25-hydroxyvitamin D3 to [3H]1,25 dihydroxyvitamin D3 ([3H]1,25-(OH)2D3) in vitamin D-deficient thyroparathyroidectomized (T-PTX) rats and on the urinary excretion of phosphate (Pi) in vitamin D-replete T-PTX rats in the presence of either PTH or CT. Plasma accumulation of [3H] 1,25-(OH)2D3 increased from 12.2 +/- 0.6 pmol/100 ml in controls to 19.5 +/- 1.1 (P less than 0.01) by 20 micrograms/h PGE2 to 29.8 +/- 1.8 (P less than 0.001) by 7.5 U/h PTH, and to 23.3 +/- 0.7 (P less than 0.01) by 500 mU/h CT. Administration of PGE2 inhibited CT-stimulated accumulation of 1,25 (OH)2D3 to levels not different from those by PGE2 alone (17.8 +/- 1.0 pmol/100 ml). In contrast, PGE2 had no effect on PTH-stimulated 1,25-(OH)2D3 accumulation. PTH and CT caused an increase in urinary Pi excretion and a decrease in plasma Pi levels. PGE2 abolished the effects of CT, but not of PTH, on both urinary Pi excretion and plasma Pi levels. Administration of PGE2 alone caused no significant changes in plasma Pi levels and only minimal increase in urinary Pi excretion. PGE2 did not suppress urinary cAMP excretion stimulated by CT. These results demonstrate that PGE2 specifically suppresses the effects of CT to stimulate synthesis of [3H]1,25-(OH)2D3 from [3H]25-hydroxyvitamin D3 and to inhibit tubular reabsorption of Pi without affecting urinary cAMP excretion. Since CT appears to stimulate 1 alpha-hydroxylase and inhibit Pi reabsorption in proximal tubules, nephron segments devoid of CT-sensitive adenylate cyclase, these data suggest that PGE2 modulates the actions of CT, but not of PTH, on proximal tubular functions. PMID- 3855399 TI - A luteotrophic action of prolactin: suppression of intraluteal prostaglandin production or effect? AB - Adult rats were hypophysectomized and their pituitary glands autotransplanted on day 2 of an estrous cycle (day 1, ovulation); the rats were either hysterectomized or sham hysterectomized immediately before this operation. On day 21, a few days after the beginning of the 3+ month period of regression of progesterone secretion, they were injected sc with 500 micrograms prostaglandin F2 alpha (PGF2 alpha) either on day 21 alone, on days 21 and 22, on days 21, 22, and 23, or on days 21 and 23; controls were injected with saline on days 21, 22, and 23. In the latter the serum progesterone level slowly fell, as it does in untreated rats subjected to pituitary autotransplantation on day 2. PGF2 alpha treatment induced a rapid, drastic fall in the progesterone level, but in each group except the one injected on days 21 and 23, the level returned to, or close to, the control level in about 10 days. Even in the group injected on days 21 and 23, the pattern of serum progesterone resembled the others although the values were much lower. In a similar group of rats subjected to pituitary autotransplantation on day 2 (all of which were also hysterectomized on day 2), a single injection of 500 micrograms PGF2 alpha (which again induced the same changes in serum progesterone as in the first experiment) was combined with either a 6-h or 4-h withdrawal of PRL; this was achieved by injecting 2 bromo alpha-ergocryptine (CB-154) at zero time to lower PRL secretion, and beef PRL, in a delaying vehicle, 6 or 4 h later, followed by a second dose of PRL 18 h after the first. When combined with such a brief period of PRL withdrawal, the PGF2 alpha treatment induced a very rapid, drastic and permanent fall in serum progesterone, equal to that induced by CB-154 alone, or by removing the pituitary transplant on day 21. The brief periods of PRL withdrawal, by themselves had very little (6 h) or no (4 h) effect on the progesterone level, and treatment with PRL alone was also without effect. Treatment with CB-154, PGF2 alpha, and PRL simultaneously (i.e. without a period of PRL withdrawal) had the same effect as treatment with PGF2 alpha alone.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3855400 TI - Stereoelectronic effects in RNase-catalysed reactions of dinucleoside phosphate cleavage. AB - The rate at which dinucleoside phosphates are cleaved by RNases is supposed to be determined by the mole fraction of enzyme-substrate complexes in which the phosphodiester moiety of a dinucleoside phosphate has a highly reactive conformation. The mole fraction of such complexes for a particular RNase depends on the nature of a nucleoside at the O5'-end of the phosphodiester bond. Experimental data are presented to support this hypothesis. PMID- 3855401 TI - Characterization of prostaglandin E2 binding to isolated human adipocytes. AB - Prostaglandin (PG) E2 binding to fat cells and its consequent antilipolytic effect have been studied in experiments using laboratory animals, but no binding studies have yet been reported using adipocytes from humans. Consequently, we have characterized PGE2 binding to human isolated fat cells to compare the apparent binding constant to the IC50 for the antilipolytic effect of PGE2. Our data indicate that human fat cells contain binding sites that specifically recognize prostaglandins of the E series and demonstrate stereospecific recognition of the more potent of two 15-methyl-PGE2 analogues. There was no evidence for rapid metabolism of PGE2 by isolated adipocytes such as occurs in lung and liver tissue. A double-reciprocal plot of binding data obtained at saturation using [3H]PGE2 and increasing concentrations of PGE2 indicated a single class of binding sites with an apparent binding constant (0.54 nM) that agreed well with the IC50 (0.26 nM) for the antilipolytic effect of PGE2 we observed in human fat cells. The findings from these binding and lipolysis studies are in general agreement with published observations using adipocytes from rodents and provide evidence that the conclusions reached from previous studies of laboratory animals are relevant to adipocyte physiology in humans. PMID- 3855402 TI - Increased jejunal prostaglandin E2 concentrations in patients with acute cholera. AB - Supraphysiologic doses of prostaglandins (PGs) mimic the effect of cholera toxin and cAMP in the small intestine, but not all observations are explicable in terms of the theory that links PGs to cAMP. Because no data exist on endogenous PGs in human cholera we measured PGE2 concentrations in jejunal fluids and fasting intestinal flow rates of PGE2 during slow marker perfusion of proximal jejunum in nine patients with high purging cholera. Nine patients in the recovery phase of cholera or other watery diarrhoeas served as controls. In acute cholera PGE2 concentrations were significantly (p less than 0.001) raised (172-1435 (n = 9) vs 60-270 (n = 9) pg/ml) and negatively correlated (r = 0.71; p less than 0.05) to the time following onset of diarrhoea. Also fasting jejunal flow rates of PGE2 were significantly (p less than 0.005) increased (0.77-8.22 (n = 7) vs 0.21-0.92 (n = 6) ng/min), and positively correlated (r = 0.84; p less than 0.01) to stool output (2.9-9.5 ml/min). By extrapolation, at normal stool output fasting jejunal flow rates of PGE2 equalled those measured during convalescence. The results support the notion that PGs, in addition to cAMP, may play a pathophysiologic role in human cholera. As the ratio between the medians of the highest values measured during the acute phase of cholera and in late convalescence was at least 15, local intestinal PGE2 formation in full blown cholera should result in mucosal PGE2 concentrations above those required for a maximal secretory response. This observation might explain why conventional doses of aspirin and indomethacin had no significant antidiarrhoeal effect in clinical trials. PMID- 3855403 TI - Significance of serum and hepatic markers of hepatitis B viral infection in HBsAg positive and HBsAg-negative chronic active hepatitis. AB - The correlation between serum and hepatic markers of hepatitis B virus (HBV) has been studied in 70 subjects with chronic active hepatitis of whom 18 were HBsAg+ and 52 were HBsAg-. In HBsAg+ subjects, sera were tested for HBeAg/anti-HBe status and for HBV DNA sequences using a DNA dot hybridization technique. Anti HBs and anti-HBc were measured in serum in the HBsAg- group. Immunoperoxidase staining was used to detect HBsAg, HBcAg and delta antigen in liver tissue. Of the 18 HBsAg+ patients, 13 were HBeAg+ and 5 were anti-HBe+. A good correlation was shown between HBeAg and HBV DNA in serum and HBcAg expression in liver tissue. Neither HBV DNA in serum nor HBcAg in liver tissue was detected in any of the anti-HBe+ patients. HBsAg and/or HBcAg were detected in liver tissue in 17 of 18 HBsAg+ subjects (95%). However, neither HBsAg nor HBcAg were detected in liver tissue in 52 HBsAg- patients. This group included 11 patients with antibody markers in serum of past HBV infection. Thus, in contrast to previous studies, a good correlation was demonstrated between the serum and hepatic markers of viral replication, and no evidence was obtained to implicate the HBV as an etiological agent in HBsAg- chronic active hepatitis. PMID- 3855404 TI - Clinical and cytogenetic studies of the Prader-Willi syndrome: evidence of phenotype-karyotype correlation. AB - Twenty-seven patients with the presumed diagnosis of Prader-Willi syndrome (PWS) were studied clinically and cytogenetically. The patients were classified into three study groups on the basis of their clinical pictures: group 1 with 12 children meeting the strict diagnostic criteria for PWS; group 2 with nine floppy infants and young children, aged 3 years or less, without obesity and hyperphagia; and group 3 with six older children in whom some characteristic features of the syndrome were absent. High-resolution GTG banding of prometaphase chromosomes revealed del(15)(q11.1;q12) in eleven and t(15;15)(qter----p11.2::q12 ---qter) in one of the twelve group 1 patients. In group 2, four patients had del(15)(q11.1; q12), one had t(15;15)(qter----p11.1::q13----qter), and the remaining four had normal karyotypes. The deleted segment common to the 17 patients with the chromosome aberrations was confined to subband 15q11.2. On the other hand, all six group 3 patients had normal karyotypes. These findings indicated that when strictly defined PWS is absolutely correlated with chromosome 15 aberrations, i.e., there is a positive phenotype-karyotype correlation, and that the aberrations are etiologically related to the syndrome. Parental origin of the deleted chromosome was determined in seven patients, with QFQ heteromorphisms being used as hereditary markers. The deleted chromosome originated from the paternal chromosome 15 in six patients and from the maternal 15 in one. PMID- 3855405 TI - Linkage relationships of the gene for apolipoprotein CII with loci on chromosome 19. AB - Two common restriction fragment length polymorphisms detected with cloned gene probes for apolipoprotein CII (apo CII) have been used to study the inheritance of the gene in families segregating for loci on chromosome 19. Lod scores for APOC2 with the gene for complement component 3 (C3) exclude close linkage and give a maximum at a male recombination fraction of 0.25-0.30. Lod scores for APOC2 and FHC, the gene causing familial hypercholesterolaemia, are negative in males and suggest the genes may not be linked. However, it appears that APOC2 may be closely linked to the blood group loci Lutheran (Lu) and Secretor (Se), and probably less closely linked to Lewis (Le). These data are consistent with the gene order: FHC-----C3-----(Lu, Se, APOC2) PMID- 3855406 TI - Evidence of a preferential inactivation of the paternally derived X chromosome in a 46,XX true hermaphrodite. AB - The pattern of inheritance of several X polymorphic markers is studied in the pedigree of a 46,XX true hermaphrodite. The results of the Xga, 12E7, and G6PD segregation analysis favour the hypothesis of a preferential inactivation of the paternally derived X chromosome. PMID- 3855407 TI - Independent regulation of myeloid cell growth and differentiation inducing proteins: in vivo regulation by compounds that induce inflammation. AB - Regulation of the in vivo production of myeloid cell growth-inducing (MGI-1) and differentiation-inducing (MGI-2) proteins has been studied in mice injected with the inflammation-inducing compounds sodium caseinate, thioglycollate and bacterial lipopolysaccharide. The results indicate that these inflammation inducing compounds can induce in vivo production of MGI-1 and MGI-2; that different inducing agents can cause a different body-distribution of MGI-1 and MGI-2; that there is an independent regulation of in vivo production and distribution of MGI-1 and MGI-2; and that there is a granulocyte growth-inducing protein (MGI-IG = G-CSF) that is not identical to the differentiation-inducing protein (MGI-2). Resident peritoneal macrophages produce MGI-1 and MGI-2 in vitro, but inflammatory macrophages show a reduced ability to spontaneously produce these proteins after in vivo injection of caseinate or thioglycollate. The results thus also indicate that macrophage activation can affect the ability of macrophages to produce the myeloid cell regulatory proteins MGI-1 and MGI-2. PMID- 3855408 TI - Intra-arterial infusion of radiosensitizer (BUdR) combined with hypofractionated irradiation and chemotherapy for primary treatment of osteogenic sarcoma. AB - Combined modality treatment was given in nine patients of osteogenic sarcoma wherein the tumor was unresectable because of location or amputation was refused. This alternative to massive surgery comprised hypofractionated irradiation, intra arterial infusion of the radiosensitizer 5'-bromodeoxyuridine (BUdR) and adjuvant systemic chemotherapy. Local control was achieved in seven of the nine patients. Four survived, all without evidence of disease at 6, 7.1, 8.8, and 10.5 years after completion of irradiation. Pulmonary metastases developed in six patients- of whom one survives, following high-dose pulmonary irradiation and additional chemotherapy. Significant soft-tissue injury occurred in five patients. On the basis of our experience, we believe that new approaches using modifications of external beam irradiation with different fractionation schedules or better radiosensitizing compounds may hold promise for patients with non-resectable osteosarcoma. PMID- 3855409 TI - Induction of chloramphenicol and tetracycline resistance in Flexibacter sp. strain FS-1. AB - The gliding bacterium Flexibacter sp. strain FS-1 exhibits inducible resistance to chloramphenicol (Cmr) and tetracycline (Tcr). Either chloramphenicol or tetracycline alone induced a Cmr Tcr phenotype. The resistance is apparently not plasmid encoded. PMID- 3855410 TI - The surgical treatment of parosteal osteosarcoma in long bones. AB - The cases of twenty-five patients with Stage-I parosteal osteosarcoma were analyzed to ascertain the incidence of recurrence after forty-two various surgical procedures that produced an intracapsular, marginal, wide, or radical excisional margin. Ten intracapsular resections were followed by local recurrence in each patient. This procedure usually was done to shell-out a presumably benign lesion. Marginal excision was successful in nine of seventeen patients. When a marginal excision was knowingly done to preserve a major neurovascular bundle, the risk of recurrence was less (three of eleven) than when it was done to shell out a presumptively benign lesion (five of six). The fourteen procedures that achieved wide margins obtained local control--that is, there was no recurrence- in each patient. There was one radical procedure without recurrence. PMID- 3855411 TI - Late metastases from osteogenic sarcoma. A case report. PMID- 3855412 TI - Influence of repeated APF applications on long-term remineralization of initial lesions in bovine enamel. AB - Initial lesions in bovine enamel were remineralized in vitro for periods lasting from one hour to two weeks; in some cases, remineralization was interrupted daily for a ten-minute APF application. After two weeks, surface coatings appeared on APF-treated specimens; SEM and TEM observations, including selected area and micro-electron diffraction, indicated both a layered structure within these coatings, and the predominance of calcium fluoride single crystals, ranging from 0.1 to 1.0 micrometer in size. Using double (45 Ca and 32 P) labeled remineralizing solutions, we obtained depth profiles of deposited labeled calcium and phosphate; these indicated that repeated APF applications prevented inward penetration of calcium and phosphate and limited the deposition of these ions to an outer surface region corresponding to the surface coating. These phenomena are explained in terms of the composition and apparent reactivity of the coating. PMID- 3855413 TI - An in vivo investigation of the fluoride uptake in partially demineralized human enamel from several different dentifrices. AB - In this study, the total fluoride uptake in partially demineralized enamel from in situ brushing with six dentifrice systems was investigated in vivo among 22 panelists. Five dentifrices with different fluoride systems were compared with a placebo control. Two demineralized enamel discs were placed in proximal positions on specially fabricated dentures worn by each participant. Each treatment involved use of the placebo dentifrice for one week, followed by two weeks of twice-daily use of the test dentifrice. The F- contents of the dentifrices were: A = 1000 ppm F as Na2PO3F + 450 ppm F as NaF; B = 1100 ppm F as NaF; C = 1000 ppm F as Na2PO3F; D = 1000 ppm F as SnF2; E = 1500 ppm F as Na2PO3F; and P = 0 ppm F (placebo). The F- uptakes from A, C, D, and E were not significantly different from each other but were all significantly higher than the placebo. Statistical analysis showed a significantly higher F- level from the NaF-based paste B than that from all other systems. No differences existed between mesial-distal specimens; there was no correlation between F- uptake and age. Significant uptake differences were found between panelists with full and partial prostheses. PMID- 3855414 TI - Hydrolysis of dicalcium phosphate dihydrate in the presence or absence of calcium fluoride. AB - Effects of temperature (25 and 37 degrees C), pH (4.9-10.5), and CaF2 on CaHPO4.2H2O (DCPD) hydrolysis were studied in a pH-stat. Octa-calcium phosphate (OCP) was the product at pH 6.2-6.8 and 25-37 degrees C; thermodynamically stable apatitic compounds were formed at higher pH and/or higher temperature. In the presence of CaF2, apatite was the product, its crystallinity improved, and the fluoride content increased as pH of the reaction decreased. The results demonstrate the remarkable ability of fluoride to promote the hydrolysis of an acidic calcium phosphate, DCPD, to apatite. PMID- 3855415 TI - Effect of some salts of calcium, sodium, potassium, and strontium on intra-oral enamel demineralization. AB - A newly-developed intra-oral enamel demineralization test was used to evaluate the effect of supplementation of a 10% sucrose solution with various components on enamel demineralization induced by the sucrose. Five human subjects wore a palatal prosthesis holding eight blocks of subsurface bovine enamel covered with a layer of S. mutans cells. The test involved rinsing with sucrose solution or with sucrose solution supplemented with 0.162 mol/l of different calcium salts or equivalent concentrations of Na-, K-, and Sr salts; rinsing was for one min at times zero and 45 min of the 90-minute test period. Ca-propionate, Ca-acetate, and Ca-levulinate completely inhibited sucrose-induced enamel demineralization; Ca-chloride, Ca-lactate, and Ca-ascorbate gave from 65-75%, and K-acetate, Na lactate, and Sr-lactate 39, 25, and 18% inhibition, respectively. Consideration of the anion dissociation constants and the Ca-anion association constants of the salts suggests that the observed inhibition is caused mainly by common ion effects and, to a lesser extent, by buffer effects. PMID- 3855416 TI - Changes in collagen types during the healing of rabbit tooth extraction wounds. AB - Three alpha chains of type V collagen--alpha 1 (V), alpha 2 (V), and alpha 3 (V)- were initially demonstrated together with the expected collagen types I and III in the pepsin-soluble fraction of both normal mandibular bone and tooth extraction wound tissues of rabbits, as analyzed by sodium dodecyl sulfate-gel electrophoresis. The total collagen content of each extraction wound, as determined by the hydroxyproline assay, was observed to increase continuously from day 5 through day 17 and then leveled off or decreased. The ratio of type V to type I collagen was significantly higher in the initial stage of wound healing and decreased sharply down to the level of mandibular bone by day 5. The ratio of type III to type I collagen in the pepsin-soluble fraction increased and reached a maximum on day 5, whereas it was maximal on day 7 in the cyanogen bromide soluble fraction, and thereafter decreased gradually in both fractions. The ratio for the pepsin-soluble fraction was, however, significantly higher than that for the cyanogen bromide-soluble fraction in the early stage of wound healing. PMID- 3855417 TI - Oligosaccharide structures of the low-molecular-weight salivary mucin from a normal individual and one with cystic fibrosis. AB - Studies were begun to compare the oligosaccharide structures of the low-molecular weight mucin purified from the submandibular-sublingual saliva of a normal individual with that from one with cystic fibrosis. Following alkaline/borotritide cleavage, neutral and sialic acid-containing chains were purified by a combination of gel filtration, paper chromatography, and high voltage paper electrophoresis. Oligosaccharides ranged in size from a disaccharide to a heptasaccharide. Approximately 80% of the oligosaccharides were GalB1, 3GalNAc; Fuc alpha 1,2GalB1,3GalNAc; and NeuAc alpha 2,3GalB1, 3GalNAc. The other structures were Fuc alpha 1,2GalB1,4(Fuc alpha 1,3)GlcNAcB1,6(GalB1,3)GalNAc or GalB1,4(Fuc alpha 1,3)GlcNAcB1,6(Fuc alpha 1,2GalB1,3)GAlNAc; GalB1,4(Fuc alpha 1,3)GlcNAcB1,6(NeuAc alpha 2,3GalB1,3)GalNAc; and Fuc alpha 1,2GalB1,4(Fuc alpha 1,3)GlcNAcB1,6 (NeuAc alpha 2,3GalB1,3)GalNAc. There were no apparent qualitative differences in the neutral and sialic acid-containing units recovered from the normal and cystic fibrosis samples. PMID- 3855419 TI - The effect of Class II elastic forces on craniofacial growth in rats. AB - Full-time Class II elastic forces were applied to eight rats in order to evaluate their effects on the growth of the snout and the mandible. Eight animals served as controls. Lateral cephalograms were taken at the start of the experiment and again at the end, 23 days later. The pre- and post-treatment tracings were superimposed on the cranial base to measure alterations in snout growth, and on metallic implants to measure differences in mandibular growth. As judged by t tests, Class II elastic forces caused a significant antero-posterior growth inhibition both in the snout and in the mandible. PMID- 3855418 TI - The effect of malnutrition on caries development and saliva composition in the rat. AB - The purpose of this study was to investigate the effect in rats of malnutrition on caries development and on some antibacterial substances in saliva. By gastric intubation, two groups of ten rats each were fed a liquid basic diet (100% diet), and two similar groups were fed the basic diet diluted with an equal volume of water to contain 50% of the nutrients of the basic diet (50% diet). One group on undiluted and one group on the diluted basic diet were offered sucrose as a supplement by mouth 17 times daily, using a programmed feeding machine, and the other two groups were offered starch in a similar manner. The extent and depth of the caries lesions were five times greater in the low-nourished (50% diet) sucrose group in comparison with the group given the undiluted diet supplemented with sucrose. The 50% diet group ate more frequently from the offered supplement. The 50% diet induced lower salivary lactoperoxidase activities, and there was an additive effect of starch as supplement. Higher concentrations of sIgA were found in the saliva of animals fed the 50% diet supplemented with sucrose than in those fed sucrose and the 100% diet. Significantly greater levels of sIgA and IgG were found in the saliva from the 50% diet-sucrose group than in the 50% diet-starch group. Plaque scores differed slightly but not significantly between the groups. The starch group receiving 100% diet showed a slightly lower level of S. mutans infection as compared with the 50% diet-starch group; the caries scores in the starch groups did not differ. PMID- 3855420 TI - Lysozyme-mediated de-chaining of Streptococcus mutans and its antibacterial significance in an acidic environment. AB - The ability of physiological amounts of lysozyme to de-chain two serotype c strains of Streptococcus mutans was determined. Both human and hen lysozymes were equally effective in chain breakage of S. mutans DPR and S. mutans DJR. De chaining did not affect growth of cultures, but resulted in finely dispersed suspensions, at stationary phase, which were visibly different from untreated cultures. Less than 50 micrograms lysozyme per ml culture medium reduced chain length to virtually all diplococci and single cells, and this chain disruption increased total viable cell count. De-chaining required an active enzyme indicating that a degree of hydrolysis of the peptidoglycan occurred at the septae of the streptococci. De-chained S. mutans did not survive as well as streptococci of normal chain length when incubated under acidic conditions (pH 5.5), but gross cellular lysis was not apparent. The reduced aciduric property of the disrupted chains may have been due to a participation of autolysins or to a lethal triggered by the lysozyme-damaged peptidoglycan. De-chaining may be a mechanism by which lysozyme could regulate the levels of S. mutans in acidogenic plaque samples. PMID- 3855421 TI - The more Streptococcus mutans, the more caries on approximal surfaces. AB - The relationship between the presence of Streptococcus mutans and caries on approximal tooth surfaces was studied in a group of 28 children who were 13 years old at baseline. 700 surfaces in the pre-molar and molar region were studied. Sampling of S. mutans was performed with a toothpick method at the beginning of the study and after one and two years. From bite-wing radiographs, the approximal surfaces were recorded as caries-free, decayed, or restored. Progression of lesions during the two years was also studied. More new caries lesions and progression caries lesions were found on surfaces positive for S. mutans than on surfaces without, and the more S. mutans, the more lesions, 52% of the surfaces with positive S. mutans findings at all three sampling occasions became carious or had caries in a progressive form. Among the surfaces with no detectable S. mutans, the corresponding figure was 8%. 80 out of the 530 surfaces diagnosed as intact at the start of the study became carious over the two-year period. 69 of these were S. mutans-positive at the first and/or second sampling. PMID- 3855422 TI - The response of dental amalgam to dynamic loading. AB - A conventional (gamma 2-containing) dental amalgam was fatigue-tested at 1800 and 80 cycles/min, employing uni-axial, sinusoidal loading, with R = -8. Compressive, tensile, and creep tests were conducted to characterize the alloy's static mechanical behavior. Tests were performed at 37 degrees C on specimens which were aged for seven days, at 37 degrees C. Fatigue-tested specimens were microscopically examined for fracture surface appearance and crack path. The amalgam demonstrated a frequency dependence and a significant reduction in fracture strength due to fatigue loading. The fatigue crack path was primarily intergranular in the gamma 1 phase and inclined at approximately 45 degrees to the principal stress axis. These observations are characteristic of some metals when subjected to low-frequency, elevated temperature testing where significant grain boundary sliding occurs, and therefore suggest a creep-fatigue interaction for this alloy. PMID- 3855423 TI - Spectrometric analysis of the influence of metal substrates on the color of metal ceramic restorations. AB - The development and use of ceramic alloys have created the potential for variation in the color of dental porcelain. In order to define the nature of the alterations, it is necessary to examine quantitatively the color of dental porcelain baked onto ceramic alloys. The purpose of this study was to examine spectrometrically where color differences occur in the fabrication process. One shade of Vita porcelain was baked onto coupons of three ceramic alloys (high gold, palladium-silver, base metal). Eight replications were made in each alloy at seven fabrication steps: prepared metal, oxide, first opaque, second opaque, first dentin, second dentin, and glaze. Spectrometric analyses were performed for each replication at each step. Data were tabulated every 10 nm over the recorded 380-750-nm range, for conversion to the CIE color measurement system. Tristimulus values X, Y, and Z and chromaticity coordinates x and y were calculated. Differences from spectrographic inspection were seen among the metal substrate series. The greatest variation appeared at the first dentin step between the palladium-silver and high-gold alloys and between the palladium-silver and base metal alloys. Mean tristimulus values were significantly different (p less than 0.0001) for all steps and alloys. The distribution of plotted values followed the same pattern of spectral changes throughout the seven fabrication steps. Analysis of these data shows that color differences of metal-ceramic coupons based on dissimilar metal substrates can be quantified, and that spectral reflectance values can be converted to CIE notation. As depicted spectrally, notable color differences appeared with the first dentin porcelain layer. PMID- 3855424 TI - Alternative interpretations of water sorption values of composite resins. AB - Water sorption values for direct filling resins and an unfilled resin were much more similar at 30 days when expressed as mg/g organic matrix than as mg/cm2 or weight percent. This interpretation is indicative of the water sorption characteristics of resin matrices. The values are even more indicative when solubility or leaching is taken into consideration. With the specimen sizes used in this study, the effect of the kinetics of water sorption could be minimized by using values obtained after immersion in water for 30 days. PMID- 3855425 TI - Danish dental education: a cultural perspective. AB - The effects of Danish cultural traditions on dental education in Denmark are described, as well as the system's current structure and developing issues. Some Danish ideas for future exports of dental education programs and dental personnel are also discussed. PMID- 3855426 TI - Standardized teaching casts for dental preclinical exercises. PMID- 3855427 TI - An evaluation of sequential models in the preclinical laboratory. PMID- 3855428 TI - Effects of graphic organizers on learning from lecture. PMID- 3855429 TI - First-year enrollment changes in public and private schools. PMID- 3855430 TI - Moral reasoning in dental hygiene students. AB - Sixty-five students participated in a study designed to identify the level of moral reasoning of dental hygiene students. Comparisons were made with typical college students and a normative group composed of individuals representing a cross-section of ages and educational levels. The relationships among level of moral reasoning and clinical performance, other selected academic measures, and cognitive style were also assessed. The results indicated that post-certificate dental hygiene students reasoned about moral dilemmas at a higher level than the normative group and at the same level as the college student group. In addition, clinical performance, National Board Dental Hygiene Examination scores, Dental Hygiene Aptitude Test (reading scores), high school rank, and cognitive style correlated positively with level of moral reasoning and specific stages of moral development for postcertificate students. PMID- 3855431 TI - A model for two-year and baccalaureate clinical dental hygiene education. PMID- 3855432 TI - HLA-DR-dependent variation of intrathecal IgG1 (Gm) allotype synthesis in multiple sclerosis. AB - Genetic susceptibility to multiple sclerosis (MS) in Caucasians was previously shown to be correlated to the presence of given alleles at the HLA-DR and Gm loci. We now demonstrate that the humoral immune response in MS central nervous system (CNS) is modulated by both loci: the levels of IgG1 subclass and IgG1 allotypes in cerebrospinal fluid of MS patients depend on both their Gm genotype and their HLA-DR2 or HLA-DR7 phenotype. That HLA-DR molecules may either participate in a preferential recruitment of IgG1 allotype-producing B cells in MS CNS or act after such a selective homing is discussed. These results demonstrate that both HLA and Gm loci are synergistically involved in the modulation of the humoral immune response. PMID- 3855433 TI - Immunotoxin-mediated elimination of clonogenic tumor cells in the presence of human bone marrow. AB - An immunotoxin was synthesized with pokeweed antiviral protein and an IgG1 monoclonal antibody directed against human B and pre-B cells. The B43 murine monoclonal antibody does not react with normal human bone marrow precursor cells. The immunotoxin bound to all Burkitt's lymphoma cell lines that were tested but not to human peripheral blood T cells. The ability of antibody-toxin conjugate to inhibit human lymphoblast cell lines was checked in a clonogenic assay system. The immunotoxin in the presence of chloroquine elicited 5.8 logs of killing of Burkitt's lymphoma cells (B-ALL). The efficient inhibition of clonogenic growth of B-ALL cells was not affected by the presence of normal bone marrow cells. The immunotoxin was not very toxic to pluripotent stem cells; less than 50% of the stem cells were lost under conditions where 5.6 logs of clonogenic lymphoma cells were eliminated from a 100-fold excess of normal marrow cells. Further, when assayed by long-term human bone marrow cultures, immunotoxin treatment did not result in a significant loss of pluripotent precursor cells. PMID- 3855434 TI - A cell surface ELISA in the mouse using only poly-L-lysine as cell fixative. AB - An ELISA using plates coated with mouse spleen cells has been developed for analysis of antibodies to cell surface antigens. Such assays have been used extensively with human cells or with tumor cells in various species, but application to normal mouse lymphocytes has been limited. Use of normal spleen cells allows access to the genetic resources offered by recombinant, congenic, and mutant mouse strains, in the preparation of cell-coated ELISA plates, the use of glutaraldehyde was found to be unnecessary and it was eliminated, thereby avoiding the destruction of some cell surface determinants. Poly-L-lysine, which was used to treat plates, was found to provide sufficient adherence and preservation of the cells. Binding of biotinylated monoclonal antibodies to cells could be detected at approximately 10 ng/well. In inhibition assays, unlabeled antibodies could be detected at approximately 10 ng/well. Cell-coated plates are stable once prepared, and can be stored for months before use. The assay described can be used to quantitate levels of antibody to a particular epitope, and can also be adapted for screening of fusions for monoclonal antibodies to cell surface antigens. PMID- 3855435 TI - Alteration in murine epidermal Langerhans cell population by various UV irradiations: quantitative and morphologic studies on the effects of various wavelengths of monochromatic radiation on Ia-bearing cells. AB - The present study was undertaken in order to clarify the exact mode of the Langerhans cell (LC) depleting process caused by UV irradiation. Following irradiation with a single dose of various wavelengths of monochromatic UV radiation (UVR), we studied the number of Ia-positive cells in mouse epidermal sheets quantitatively, particularly with regard to dose-response relationship, action spectrum, and time course change. In addition, we studied morphologic alterations of these cells using electron- and immunoelectron microscopy (EM and IEM). We obtained the following results after a single dose of UVB radiation (200 mJ/cm2 of 300 nm) or PUVA (1% of 8-methoxypsoralen (8-MOP) 20 microliter and 1 J/cm2 of 360 nm): (1) EM and IEM showed that while some LCs simply lost their Ia marker without any structural alterations, the majority of the LCs disappeared due to actual cell damage. (2) During an "injury phase," the initial 48 h, and a "recovery phase," lasting from 4-14 days after irradiation, enlargement of the size of remaining Ia-positive LCs occurred. The degree of enlargement was closely related to the degree of reduction in number, suggesting a process compensating for the loss of the LC population. (3) It was found that the recovery rate of LCs after irradiation damage was slower than that of keratinocytes, indicating different cell kinetics between these distinct cell populations in the epidermis, i.e., restoration of LCs after irradiation seems to be achieved at least partially through a repopulation process originating in the bone marrow. Studies with irradiation of various monochromatic wavebands, with or without topical 8 MOP, showed that the action spectrum for Ia-positive cell depletion activity lay within the spectrum shorter than 300 nm for UVR alone, and between 320-380 nm for 8-MOP plus UVR. Since the action spectra were similar to those for keratinocyte damage, i.e., sunburn cell formation, induction of unscheduled DNA synthesis, and to those for UVR-induced erythema, we conclude that common mechanisms underlie these types of tissue damage. PMID- 3855436 TI - The influence of parturition on peripheral blood mononuclear phagocyte subpopulations in pregnant women. AB - Mononuclear phagocytes (MPs) from human peripheral blood were separated on discontinuous Percoll gradients into two subpopulations. A high density population was isolated which contained less mature MPs, while the MPs in the low density population were more mature cells. The proportion of high density MPs was found to increase sharply in conjunction with the peripheral blood monocytosis associated with parturition in women. The data show that there is a measurable response in the circulating MP pool to this acute inflammatory stimulus and that this response is manifested as an increase in absolute numbers of both total and high density MPs. No significant change was found in the number of low density MPs. PMID- 3855437 TI - Receptor-mediated entry of peroxidases into the parasitophorous vacuoles of macrophages infected with Leishmania Mexicana amazonensis. AB - Leishmania amastigotes, obligatory parasites of macrophages, lodge and multiply within long-lived phagolysosomelike "parasitophorous vacuoles" (PV). The glycoprotein horseradish peroxidase (HRP) was shown, by light and electron microscopic cytochemistry, to enter the PVs of rat in vitro-derived bone marrow macrophages infected with Leishmania mexicana amazonensis. Uptake was obtained both in preinfected macrophages incubated with HRP and in macrophages pulsed with HRP, infected, and further incubated in ligand-free medium. Peroxidase positive and negative PVs could coexist in the same macrophages. Infected macrophages commonly displayed fewer labeled secondary lysosomes than noninfected cells. Lactoperoxidase (LP) was also shown, by light microscopy, to enter the PVs of rat macrophages. Uptake of HRP and of LP was blocked by mannan, supporting the mannose receptor mediated recognition of these ligands. Transfer of HRP to PVs was much less efficient in resident mouse peritoneal macrophages, even at 50 X higher ligand concentrations. Such macrophages expressed negligible mannose receptor function. The efficient mannan-inhibitable uptake of HRP by rat marrow macrophages was confirmed biochemically. Bulk HRP uptake in infected and noninfected cultures was found to be similar. Peroxidases should be useful in further studies of endocytosis by Leishmania-infected macrophages and in the development of lysosomotropic macrophage-targeted drug carriers. PMID- 3855438 TI - Induction of neovascularization and nonlymphoid mesenchymal cell proliferation by macrophage cell lines. AB - The mature murine macrophage-like cells NCTC-3749 and J-774, the immature human macrophage-like cells U-937-1, and their conditioned media exhibited potent angiogenic activity in rat corneas and stimulated proliferation of bovine aortic endothelial cells (BAEC) and DNA synthesis in BALB/c-3T3 cells in culture. In contrast, the immature human macrophage-like cells HL-60 and their conditioned media either failed to produce or release detectable quantities of these activities. Exposure of HL-60 cells to phorbol-myristate-acetate (PMA) did not enhance expression of angiogenic and growth stimulating activities by these cells. Both the angiogenic and growth stimulating activities appear to be mediated by a factor(s) that has biochemical properties in common with macrophage derived growth factor (MDGF) produced by normal rat peritoneal macrophages. These results suggest that NCTC-3749, J-774, and U-937-1 macrophage-like cell lines may be a useful source for the large scale production and characterization of MDGF and macrophage-derived angiogenic activity. PMID- 3855439 TI - A lectinlike receptor on murine macrophage cell line cells, Mm1: involvement of sialic acid-binding sites in opsonin-independent phagocytosis for xenogeneic red cells. AB - The recognition mechanism of xenogenic red cells by mouse macrophages was studied by using established cell lines. Approximately 30% of cell line cells Mm1 which lack la antigen, as well as of thioglycollate-induced peritoneal macrophages from SL/Am mice (TGC-M phi) could ingest unopsonized quail red cells (QRC). In contrast, an undifferentiated type of cell line, M1-, and another type of macrophage cell line, Mk1-C, possessing accessory cell activity in association with the expression of la antigen, had no phagocytic activity for QRC. Approximately 80% of Mm1 cells, as well as TGC-M phi formed rosettes with QRC, whereas M1- and Mk1-C cells did not; indicating that specific binding sites for QRC are expressed on a large portion of Mm1 and TGC-M phi but not on M1- and Mk1 C cells. No requirement of divalent cation (Mg++, Ca++) and metabolic energy was observed for rosette formation between Mm1 cells and QRC. Protease treatment of Mm1 cells eliminated the rosetting activity, whereas periodate oxidation of glycosidase treatment slightly enhanced this activity, suggesting the involvement of surface protein in binding sites of Mm1 cells. In contrast to these findings on Mm1 cells, binding components of QRC were sensitive to periodate oxidation or neuraminidase treatment but resistant to protease, suggesting that the terminal sialic acid residues of carbohydrate of QRC are recognized by Mm1 cells. Furthermore, N-acetylneuraminic acid (NeuNAc) inhibited the rosette formation and promoted the dissociation of rosettes already formed. N-Acetylneuramin lactose (Neu-NAc-Lact) was more efficient in rosette inhibition than NeuNAc. These sugars also blocked the phagocytosis of QRC by Mm1 cells but had no effect on either Fc mediated phagocytosis or latex ingestion. These results suggest that phagocytosis of QRC by murine macrophages is mediated by protease-sensitive binding sites recognizing terminal sialic acid residues of QRC in conjunction with additional carbohydrates. PMID- 3855440 TI - Endothelial cells enhance the human pokeweed mitogen lymphocyte response. AB - The effect of endothelial cells (EC) on lymphocyte mitogen responses was examined. Irradiated or mitomycin C treated EC were co-cultured with allogeneic peripheral blood mononuclear cells (PBM), and proliferative responses to pokeweed mitogen (PWM) and phytohemagglutinin (PHA) were assessed by 3H-thymidine incorporation. Compared to lymphocyte responses in the absence of EC, EC co culture enhanced PWM responses at 72 hours by 55 +/- 28%, 103 +/- 24%, and 96 +/- 9% at EC:PBM ratios of 1:30, 1:10, and 1:3, respectively. The EC co-culture also resulted in significant lymphocyte responses to otherwise submitogenic doses of PWM (10(-4) micrograms/ml) as well as an accelerated kinetics of response. There was no effect of EC on PHA responses. The EC effect appeared not to require cell contact for its expression; however, supernates of EC cultures were not capable of reproducing the effect. On a cell-for-cell basis, EC were more potent in enhancing responses of adherent-cell-depleted lymphocytes than either allogeneic or syngeneic monocytes. Fibroblasts could not substitute for EC in enhancing PWM response, suggesting that the effect was not a nonspecific feeder phenomenon. The EC may play a role in modulating some immune responses in vivo, especially those occurring in areas of inflammation, neovascularization, and endothelial cell proliferation. PMID- 3855441 TI - Antileukocyte activity I. Systemic inhibition of cellular emigration following local inflammation. AB - Inflammation in progress at one site decreases edema formation at a second and separate inflammatory focus. This clinically important phenomenon is known as counter-irritation. Since its effect on leukocyte responses has not been defined, we investigated in rats the systemic anti-inflammatory effect of local irritant injection on cellular emigration, particularly monocytes. Macrophage accumulation at a subcutaneous inflammatory site was severely depressed by prior intraperitoneal irritant injection despite continued macrophage accumulation in the peritoneal cavity and normal circulating monocyte levels. The phenomenon also existed in the peritoneal cavity to subcutaneously administered irritants and involved PMNs as readily as macrophages. Anti-inflammation occurred only when the counter-irritant was injected before or simultaneously with the measured inflammatory response while the degree and duration of inhibition depended upon the nature and amount of counter-irritant injected. These studies demonstrate that local inflammation inhibits leukocyte reactivity. Transplantation of syngeneic tumor but not normal cells also produced a depression in macrophage inflammatory responses. This inhibition differed from counter-irritation by not affecting granulocytes and by being transient despite tumor persistence. PMID- 3855442 TI - Antileukocyte activity II. Induction of tolerance to systemic anti-inflammation associated with local irritation and major surgery. AB - Anergy associated with cancer or major surgery may derive from the systemic antileukocyte effect induced by local inflammatory reactions (counter irritation). Since the mechanism of the latter phenomenon is unknown, we approached the problem by asking if tolerance develops to repeated local irritant injections. Our results demonstrate that both tolerance and cross-desensitization occur rapidly to inflammatory agents (inflammagens) such as proteose peptone, thioglycollate, and carrageenan but not to the mitogens Con A, PHA-P, or LPS which also induce local inflammation. We interpret this data as supporting the notion that a common mechanism underlies the counter-irritant action of inflammagens but that injection of mitogens induces an additional mechanism of anti-inflammation distinguished from the former by its lack of tolerance induction. Based upon cross-desensitization experiments, we show that the anti inflammatory effect of surgical amputation is analogous to that induced by inflammagens. In contrast, the systemic anti-inflammatory effect of tumor bearing, like that induced by mitogens, resists cross-desensitization suggesting that its mediation is not caused solely by the mechanism common to the counter irritant action of inflammagens or major surgery. PMID- 3855443 TI - Hepatitis B virus markers in children with acute leukemia: the effect of chemotherapy. AB - Hepatitis B virus markers were tested in the serum of 49 children with acute leukemia on clinical presentation and during subsequent chemotherapy. Hepatitis B surface antigenemia was observed in only six patients (12%), none of whom progressed to chronic infection. Chemotherapy had a marked suppressive effect on the production of antibodies to hepatitis B virus antigens and overt infection occurred in two children after suppression of protective immunity. Evidence of liver damage was frequently observed and was largely independent of serologic data. These results indicate that active immunization with hepatitis B vaccine may not find a clear place in this clinical setting. PMID- 3855446 TI - Regional pulmonary distribution of krypton-81m gas delivered by different breathing systems. AB - Regional pulmonary distribution of 81mKr gas delivered by three breathing systems was determined. Data from 18 patients were analyzed. Posterior images were obtained using each breathing system in turn. Distribution of Kr gas was determined in terms of penetration and zonal indices. For penetration indices each lung was divided into a central, intermediate, and peripheral region and these indices, defined as the ratio of counts/cell in the intermediate or the peripheral region over those in the central region, were calculated. For the zonal indices each lung was divided equally into upper and lower zones and the percentage ratio of the counts in each zone to the total counts in both lungs was calculated. For all patients, in addition, the size, height, and width of each lung were determined from computer images. These parameters were compared between the breathing systems using a paired t-test. It was found that there were no statistical differences among the three breathing systems, either in the regional pulmonary distribution of the 81mKr gas or in the overall shapes of the lungs. PMID- 3855445 TI - Postirradiation cerebellar glioma. Case report. AB - A 13-year-old girl developed an anaplastic astrocytoma of the cerebellum 7 years after irradiation of the central nervous system and prophylactic chemotherapy for acute lymphocytic leukemia. The fact that the astrocytoma was anaplastic and infiltrative was unusual for astroglial tumors at this site. It is proposed that this is a radiation-induced glioma. PMID- 3855444 TI - Intensive combination chemotherapy (ROAP 10) and splenectomy in the management of chronic myelogenous leukemia. AB - To investigate the role of intensive chemotherapy in chronic myelogenous leukemia (CML), we treated 37 patients who had Philadelphia-positive benign-phase disease with rubidazone 300 mg/m2/d 1 (or daunorubicin 30 mg/m2/d X 4), cytosine arabinoside 80 mg/m2/d X 10, vincristine 2 mg/d 1, and prednisone 100 mg/d X 5 (ROAP 10), every four weeks for a median of three cycles. This treatment was followed by splenectomy and by subsequent maintenance therapy with 1 to 5 g hydroxyurea daily in intermittent courses. After a median follow-up of 42 months (range, 24 to 54 months), 20 patients (54%) remain in benign phase. The projected median survival is 52 months, and the three-year survival rate is 67%. Six patients (16%) developed blastic crisis, and eight died in the benign phase. A significant cytogenetic response, defined as a fall in the percentage of Philadelphia-positive cells to less than or equal to 30%, occurred in 18 (53%) of 34 patients who had serial cytogenetic studies. Six patients (18%) had reductions to 35% to 90%, whereas ten remained 100% positive. Cytogenetic response lasted for a median of six months from the time of maximal response (range, 1 to 18 months). Blastic crisis or accelerated disease developed in seven (44%) of the 16 patients who manifested minimal or no cytogenetic response, compared to only two of the 18 patients (11%) who achieved a significant cytogenetic response. Toxicity, which resulted in one death, was due to myelosuppression and consisted of febrile episodes during neutropenia (24% of courses), documented infections (8% of courses), and bleeding (8% of courses). ROAP 10 intensive therapy produces moderate survival improvement for CML patients compared to a matched historical control group of patients treated at our institution, but it has considerable myelosuppressive toxicity. The Philadelphia chromosome response is an important treatment-related prognostic factor. PMID- 3855447 TI - Diagnosis of temporomandibular joint pain in patients seen at a pain clinic. AB - A retrospective survey of a pain clinic population found 43 patients (2.6% of the total population) who had pain in the temporomandibular joint region. The clinical presentation of these patients did not differ greatly from that observed with typical responsive temporomandibular joint pain; however, important discriminating factors were duration of the pain, a strong history of pain elsewhere in the body, and major psychiatric disturbance. The diagnosis was atypical facial pain in 39 (90%) of the cases; other diagnoses included glossopharyngeal neuralgia and perineural invasion by adenocystic carcinoma. Although the various treatment strategies employed resulted in an improvement of pain in 63% of cases, there was often a subsequent development of pain elsewhere in the body or other disturbances. PMID- 3855448 TI - Glycogen-rich adenocarcinoma of a minor salivary gland. AB - A case of a glycogen-rich adenocarcinoma arising in the minor salivary glands of the hard palate is described. The clinical, light microscopic, histochemical, and ultrastructural findings supporting this diagnosis are presented. PMID- 3855450 TI - Spontaneous regeneration of a unilaterally absent mandibular condyle. PMID- 3855452 TI - Squamous odontogenic fibroma. PMID- 3855449 TI - The correction of mandibular deformity due to Paget's disease of bone. PMID- 3855451 TI - Mandibular gingival metastasis from a rectal adenocarcinoma. PMID- 3855454 TI - Sublabial antrostomy. PMID- 3855453 TI - Fiberoptic antroscopy. AB - Radiographs of the maxillary sinus can be difficult to interpret, and, on occasion, they can be equivocal or even misleading. Although tomography or computerized tomography may help, these investigations are time consuming and are not universally available. Use of the rigid fiber optic antroscope may represent a viable alternative for the method of examination of the maxillary antrum that is quick and able to be performed as an office procedure using local anesthesia. The procedure is well tolerated and associated with a very low morbidity. PMID- 3855455 TI - Medicolegal aspects of lingual nerve injury. PMID- 3855456 TI - Anesthesia or sedation? PMID- 3855457 TI - The art of doing nothing. PMID- 3855459 TI - Components of adult Class II open-bite malocclusion. AB - In an effort to identify the frequency and distribution of the dental and skeletal components of adult Class II malocclusion with and without open-bite, 124 adults, half of whom had an anterior open-bite, were evaluated. Significant differences (P less than 0.05) between the open-bite and non-open-bite groups were found for the following measurements: the posterior maxilla exhibited vertical excess in the open-bite group; the maxillary occlusal plane was less steep in the open-bite group; the mandibular occlusal plane was more steep in the open-bite group; the gonial angle was higher in the open-bite group; the mandibular plane angle was higher in the open-bite group; the mandibular ramus was positioned in a more downward and backward (clockwise) location in the open bite group; the total and lower anterior facial height were increased in the open bite group; and the mandible was less protrusive in the open-bite group. No significant intergroup differences were noted in the cranial base, the anteroposterior position of the maxilla or of the upper and lower incisors, the palatal plane, posterior facial height, mandibular ramus height, or mandibular body length. The results of this analysis indicate that the average Class II open bite malocclusion is characterized by aberrations in both the maxilla and the mandible. Therapy, therefore, may frequently require surgical intervention in both jaws to successfully correct this deformity. PMID- 3855458 TI - Effects of smokeless tobacco and snuff on oral mucosa of experimental animals. AB - The effects of smokeless tobacco on oral mucosa were studied in 60 Syrian hamsters. Histologic study of the buccal pouch mucosa revealed no significant pathologic changes at either ten or 20 weeks after the start of the experiment. However, studies on epithelial whole mounts revealed a statistically significant decrease in mitotic activity and a statistically significant increase in the number of Langerhans' cells in animals subjected to daily use of tobacco or snuff for 20 weeks. PMID- 3855460 TI - Analysis of the direct effects of prostaglandins on human sperm function. AB - Time-exposure photomicrography and interspecies in-vitro fertilization procedures have been used to examine the influence of prostaglandins on human sperm function. An analysis of variance indicated that the presence of PGs in the incubation media was associated with a significant increase in sperm velocity and the frequency of sperm head rotation, although there were no differences between individual PGs in the degree of stimulation observed. Changes in the penetrating ability of human spermatozoa were detected after exposure to PGs, particularly PGE-1 and PGE-2. PGE-2 induced a sustained increase in penetration rates at all doses of greater than 8.4 micrograms/ml, while exposure to PGE-1 gave a bell shaped dose-response curve which exhibited a peak between 8.4 and 33.3 micrograms/ml and progressively fell to reach control levels at the maximum concentration tested of 270 micrograms/ml. A combination of PGE-2 and PGE-1 produced a dose-response curve similar to that for PGE-1 alone, while exposure to PGF-2 alpha was without effect. Seminal extracts containing predominantly 19 hydroxy PGE-1, or equal amounts of 19-hydroxy PGE-1 + 2 induced a slight, but significant, rise in penetration rates while a combination of PGs representing the major components of human seminal plasma was without significant effect. We conclude that certain prostaglandins may have a direct action on the functional competence of human spermatozoa. PMID- 3855461 TI - New Jersey's pharmaceutical industry. PMID- 3855462 TI - Participatory ethics committees: a model for lay and medical collaboration. PMID- 3855463 TI - Case report: bronchiolitis obliterans with multinodular lung densities and lymphoma. PMID- 3855464 TI - Case report: intraosseous gouty tophus. PMID- 3855465 TI - Case report: cardiorespiratory failure due to recurrent pectus excavatum deformity. PMID- 3855466 TI - Case report: approach to the diagnosis of sea-blue histiocytosis in a community setting. PMID- 3855467 TI - Influenza vaccine. PMID- 3855468 TI - Risk prevention. PMID- 3855469 TI - Family practice in hospitals. PMID- 3855470 TI - Coronary spasm, prostaglandin and HLA factors. AB - To elucidate the contribution of prostanoids in coronary spasm, plasma levels of thromboxane B2 (TXB2) and 6-keto PGF1 alpha at the coronary sinus and ascending aorta in 21 patients with variant angina were measured, as compared with findings in 20 with effort angina and 13 subjects with normal coronaries. In the coronary sinus blood, plasma TXB2 in patients with effort angina exhibited statistically significant high levels, as compared with data in the controls. On the contrary, the data obtained from patients with variant angina were not statistically significant. However, eight patients whose coronary angiogram revealed more than 50% of coronary stenoses had statistically significant high levels of TXB2 and other patients with normal coronaries or less than 50% of narrowing showed almost the same levels of TXB2 as the controls. In contrast to TXB2, the plasma levels of 6-keto PGF1 alpha in patients with variant angina were very low in both groups with variant angina. These data suggest that high levels of TXB2 observed in patients with atherosclerotic coronaries may be an accelerating factor while low levels of prostacyclin may be an essential factor leading to spasm. HLA analysis of 23 patients with variant angina was performed to search for genetic factors, under the hypothesis that such may contribute to the low levels in prostacyclin. This preliminary study revealed statistically significant high frequencies of Bw52 and B-40 in the patients, as compared with frequencies among 152 normal Japanese. Genetic studies are ongoing in our clinic. PMID- 3855471 TI - Long-term mortality study of oil refinery workers. IV. Exposure to the lubricating-dewaxing process. AB - A retrospective cohort mortality study of 1,008 male oil refinery workers who ever worked on the lubricating-dewaxing process of the lube oil department and who have been followed for a period of 43 years is presented. These workers were exposed to a number of solvents, primarily methyl ethyl ketone [(MEK) CAS: 78-93 3] and toluene (CAS: 108-88-3), but at levels far below the current Occupational Safety and Health Administration's standard. The standardized mortality ratio (SMR) for all causes (0.70) and the SMR for cancer (0.86) are much lower than unity when they are compared to the mortality experience of the U.S. population. Also observed in this study were 8 prostate cancer deaths (4.4 expected) with an SMR of 1.82, which was not statistically significant (P = .16). Seven of these 8 prostate cancer deaths occurred among nonwhite males, who showed an SMR of 2.47 (P = 0.53). However, only 1 prostate cancer death was seen among workers specifically assigned to the MEK units. The remaining deaths occurred among maintenance workers who had lube oil department-wide assignments. This cancer risk increased with increasing duration of employment in the lube oil department. A latency of 20 years or more was also observed for these prostate cancer deaths. In this study the processing of lubricating oils was found to be at least as important as the MEK solvents, and department-wide maintenance workers were as much at risk as the MEK unit workers. In view of this finding and findings obtained by others, it seems prudent to continue to study lubricating-dewaxing process workers, including the medical monitoring of all such workers for prostate cancer. PMID- 3855472 TI - Vinca alkaloid skin toxicity: antidote and drug disposition studies in the mouse. AB - A murine (BALB/c) skin toxicity model was used to evaluate various possible antagonists to vinca alkaloid-induced skin ulceration. Reproducible dose-response relationships were developed for vinblastine (VBL) and vindesine (VDS). With vincristine (VCR) only about 70% of mice developed dose-dependent ulceration. On an equal weight basis, VCR proved to be significantly more toxic than either VBL or VDS (P less than .05 by Student's t-test). Effective local intradermal antidotes to VBL, VDS, and VCR included hyaluronidase, normal saline, and calcium leucovorin (P less than .05 by the Student's Newman-Keuls multiple range test). Mild, topical skin heating significantly reduced VCR ulceration. In contrast, diphenhydramine and sodium bicarbonate were ineffective as local antidotes. Topical skin cooling, however, significantly increased vinca-induced skin ulcers for VBL, VDS, and VCR (P less than .05). Hydrocortisone, vitamin A topical cream, and isoproterenol increased skin toxicity. [3H]VBL was given intradermally to follow the drug's pharmacokinetic disposition from the skin and adherent panniculus carnosus muscle. [3H]VBL exhibited two phases of elimination: a rapid early phase [half-life (t 1/2) of approximately equal to 30 min] and a prolonged terminal phase (t 1/2 of approximately equal to 17 hr). The application of heat increased the distributive, early phase by 0.5-2.5 hours and did not enhance the terminal elimination of the drug from skin. Intradermal hyaluronidase significantly reduced the area under the ulceration multiplied by the time curve to one-seventh the control value, the peak [3H]VBL skin concentration to one-half the control value and the terminal [3H]VBL t 1/2 in skin to one-third the control level (P less than .05 by Student's t-test). These results show hyaluronidase to be an effective antidote for vinca-induced skin ulceration. Local glucocorticosteroids and topical cooling are definitely contraindicated in the management of inadvertent vinca alkaloid extravasations. PMID- 3855474 TI - Evidence concerning the clonal nature of chemically induced tumors: phosphoglycerate kinase-1 isozyme patterns in chemically induced fibrosarcomas. AB - Subcutaneous fibrosarcomas were induced chemically in mosaic mice heterozygous at the Pgk-1 locus on the X-chromosome. The normal tissues of these animals displayed two electrophoretically distinct isozymes of phosphoglycerate kinase-1 [(PGK-1) EC 2.7.2.3]. The tumors were carefully dissected and analyzed with respect to PGK-1 isozymes. A combination method of multiple sampling of the primary tumor and establishment of tissue culture cell lines from the tumor was utilized. A total of 82 samples was studied from 10 tumors developed in 9 mice. Twenty cell lines were established from 9 tumors; 6 of the tumors were shown to contain neoplastic cells of exclusively PGK-1B activity, 3 of the tumors were shown to contain neoplastic cells of exclusively PGK-1A activity, and 1 tumor contained neoplastic cells with both PGK-1A and PGK-1B activities. The tumor with both A and B activities was hourglass shaped, and the pattern of activity from multiple samples of this tumor suggests that it was formed by the coalescence of a PGK-1A and a PGK-1B tumor. The data presented are concordant with results from chimeric animals and spontaneous tumors in humans and indicate that these tumors display the behavior of clonal growths. PMID- 3855473 TI - Long-term responses of the mouse uterus to neonatal diethylstilbestrol treatment and to later sex hormone exposure. AB - The effects of ovariectomy at 1 month of age and continuous 17 beta-estradiol (E2) and/or progesterone (P) replacement on the uterus of BALB/cCrgl mice neonatally treated with diethylstilbestrol [(DES) CAS: 56-53-1; alpha-alpha' diethyl-4,4'-stilbenediol] or sesame oil were recorded after 1, 4, 7, and 10 months of treatment. DES-exposed uteri were found to be hypoplastic, less responsive to the growth-promoting effects of E2, and more likely to develop smooth muscle abnormalities after continuous hormonal treatment than similarly treated control uteri. Neonatal DES treatment led to leukocytic infiltration, disruption in the organization of the inner circular smooth muscle layer, and development of a population of epithelial cells believed to respond to later E2 treatment by proliferation and stratification (squamous metaplasia). Qualitative and quantitative responses to continuous P treatment and the development of cystic glandular hyperplasia and adenomyosis were found to be unaltered by neonatal DES administration. The relevance of these results to the problems of uterine abnormalities observed in women exposed to DES in utero is discussed. PMID- 3855475 TI - Species-specific differences in toxicity of antimitotic agents toward cultured mammalian cells. AB - Toxicities of various microtubule inhibitors, namely, colchicine, podophyllotoxin, maytansine, vinblastine, nocodazole, griseofulvin, and steganacine, toward numerous independently established cell lines from three different species, namely, human, mouse, and Chinese hamster, were examined. Some of these inhibitors (namely, colchicine, vinblastine, taxol, and maytansine) were found to exhibit large (between tenfold and fiftyfold) differences in their toxic and antimitotic concentrations toward various cell lines and these differences appeared to be species related inasmuch as all cell lines from a particular species showed similar sensitivities toward these inhibitors. Of the three species examined, cells of human origin exhibited maximum sensitivity toward these inhibitors while Chinese hamster cells were found to be most resistant. The reduced cellular transport of [3H]colchicine and [3H]vinblastine in Chinese hamster cells as compared to the cellular transport in human cells and the equivalent binding of [3H]colchicine and [3H]vinblastine to microtubule proteins in cell extracts from both these lines provided strong evidence that the observed differences in toxicity to these inhibitors were most likely caused by differences in the cellular transport of these drugs. In contrast to the toxicities of the above compounds, the toxicities of other microtubule inhibitors such as podophyllotoxin, steganacine, griseofulvin, and nocodazole were found to be very similar for cells from all three species, indicating that the cellular transport of these 2 groups of microtubule inhibitors differed in some important respect. Some implications of the observed species-specific differences in drug toxicity to clinical studies are discussed. PMID- 3855476 TI - Transformation-associated increase of adhesion, cellular fibronectin, and stress fiber development in a liver epithelial cell line. AB - Cytoskeletal and adhesion characteristics of DL-ethionine (CAS: 67-21-0) transformed rat liver epithelial cells (ETC) were compared with those of nontumorigenic, untreated cells of the same cell line both at the same passage level as ETC and at an early low passage level. ETC and high-passage-level cells (HPC) showed increased cell spreading and prominent actin stress fibers compared to low-passage-level cells (LPC). The number of adhesion plaques per unit cell area was higher for ETC than for LPC. At confluence, fibronectin expression was high for ETC, moderate for HPC, and low for LPC. The observed increases in cell spreading and in actin and fibronectin expression appeared to be associated with transformation of this cell line rather than being specific responses to ethionine treatment. This conclusion is suggested by the fact that HPC, which display preneoplastic markers, are similar in many respects to ETC. PMID- 3855477 TI - Microautoradiographic localization of bound metabolites in the nasal cavities of F344 rats treated with the tobacco-specific carcinogen 4-(methylnitrosamino)-1-(3 pyridyl)-1-butanone. AB - 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK), the tobacco-specific N nitrosamine, labeled with 14C on the carbonyl group, was given iv or orally to F334 rats. The animals were killed 4 hours later, and the localization of bound radioactivity in the nasal cavities was studied by light microscopic autoradiography. The strongest labeling was observed in the following groups of glands situated in the lamina propria mucosae: 1) Bowman's glands in the olfactory region, 2) the group of serous glands situated in the anterior half of the nasal septum beneath the respiratory epithelium, 3) the group of serous glands in the middle portion of the lateral wall of the nasal cavity, and 4) the lateral nasal gland (Steno's gland) located lateroventrally to the maxillary sinus. The group of mucous glands in the septum in connection with Jacobson's organ and the group of glands in connection with the dorsal, medial, and lateral parts of the maxillary sinus were not labeled. The olfactory and respiratory surface epithelia in the various parts of the nasal cavity were only weakly labeled. These results indicate that Bowman's glands, some serous glands, and Steno's glands are the principal sites where NNK is activated to alkylating species. PMID- 3855479 TI - Lipopolysaccharide stimulation of plasmacytoma cells. AB - Various preparations of lipopolysaccharides (LPS) were tested for their effect on 6 plasma tumor cell lines. LPS from Escherichia coli B5:055, Salmonella minnesota 1114, and R7 mutant, as well as the glycolipid from S. minnesota 595 were highly stimulatory on cell suspensions from solid transplantable plasma tumor cells MOPC 315 and MPC11, as measured by thymidine incorporation and cell proliferation. Even nanogram doses were effective. LPS preparations from S. minnesota R5 and endotoxin-free cell wall residues of R5 and R7 mutants of S. minnesota had no stimulatory effect on these cells. In contrast, 4 lines of tissue culture-adapted plasma tumor cells (Adj PC5, HOPC-1, MOPC-21, and MPC11 TC) were not affected by any LPS preparation tested. Lymphosarcoma P1798 cells were also unaffected by these LPS. PMID- 3855478 TI - Prostaglandin E2 production by EL 4 leukemia cells from C57BL/6 mice: mechanism for tumor dissemination. AB - Murine EL 4 leukemia cells contained and secreted prostaglandin E2 (PGE2). PGE2 was secreted into the culture media during in vitro growth, as well as into plasma during growth in the peritoneum of inbred C57BL/6 mice. For the study of the role of PGE2 in tumor dissemination, migration of EL 4 cells out of glass capillary tubes was used as an in vitro model for tumor spread in a host. PGE2 enhanced the in vitro migration of EL 4 cells while indomethacin, a prostaglandin synthesis inhibitor, reduced the extent of migration. When EL 4 cells were allowed to migrate into medium containing both indomethacin and PGE2, the cells exhibited an enhanced migration ability suggesting an extrinsic effect on cells by PGE2. The participation of tumor-derived PGE2 in promoting tumor spread in a host was supported by demonstration that EL 4 cells grown in indomethacin-treated mice secreted less PGE2 and had reduced in vivo dissemination ability. These results indicated that tumor spread was promoted by tumor-derived PGE2. The extent of migration and dissemination can be reduced by prostaglandin synthesis inhibitors such as indomethacin. PMID- 3855480 TI - Differences in activity of N2-guanine tRNA methyltransferase II among several inbred strains of mice. AB - The tRNA methyltransferase activities of C57BL/6J, C57L/J, C58/J, AKR/J, and C3H/HeJ inbred mice were studied with the use of various amino acid-specific Escherichia coli tRNA's as substrates. Mice from two strains with high incidence of spontaneous leukemia (AKR/J and C58/J) exhibited levels of liver N2-guanine tRNA methyltransferase II (N2-MeGII) activity that were double those of two strains of mice with low incidence of spontaneous leukemia (C57BL/6J and C57L/J). Activities of liver and kidney N2-MeGII of the high spontaneous hepatoma strain C3H/HeJ were also found to be twice as high as those of C57BL/6J mice. The activities of other tRNA base-specific liver tRNA methyltransferases were very similar in all strains studied. The N2-MeGII activity of the F1 progeny of a cross between C57BL/6J and C3H/HeJ showed levels of activity intermediate to those of the parental strains. Activities of liver N2-MeGII of two inbred strains of mice that differ in their H-2 haplotype (C57BL/10SnJ and the congenic strain B10.BR/SgSnJ) were also compared. Both C57BL/10SnJ and B10.BR/SgSnJ strains exhibited low levels of liver N2-MeGII activity, indicating that H-2 does not directly control the activity of this enzyme. PMID- 3855481 TI - Effect of pregnancy and nursing on the growth of metastases from N-nitroso-N methylurea-induced mammary carcinomas. AB - Pregnancy increased the survival times of inbred BUF/N rats bearing occult metastasis of a mammary carcinoma at the time of conception. Nursing following delivery nullified the effect of pregnancy. The similarity of the controlled experimental data with the limited clinical observations is noted. An experimental model of rat mammary carcinoma has been described that possesses a highly metastasizing capacity and can be utilized to study the behavior of clinically silent metastasis. PMID- 3855482 TI - Trisodium nitriloacetate monohydrate: promoting effect in urinary bladder carcinogenesis in rats treated with N-butyl-N-(4-hydroxybutyl)nitrosamine. AB - The effect of trisodium nitrilotriacetate monohydrate [(Na3NTA X H2O) CAS: 18662 53-8] on development of urinary bladder tumors in rats initiated with N-butyl-N (4-hydroxybutyl)nitrosamine [(BBN) CAS: 3817-11-6] was studied. Twenty-one male inbred W rats 6 weeks of age were given drinking water containing 500 ppm of BBN for 4 weeks and then put on diet containing 10,000 ppm of Na3NTA X H2O for 28 weeks. Na3NTA X H2O promoted the development of urinary bladder tumors in rats treated with BBN. The incidences of papilloma and transitional cell carcinomas in the urinary bladder were 90% (18/20) and 25% (4/20), respectively, in rats treated with BBN and then Na3NTA X H2O and 0 in those treated with BBN or Na3NTA X H2O alone. The incidence of papillary or nodular hyperplasia in week 32 was 100% (20/20) in rats treated with BBN and then Na3NTA X H2O and 61% (13/21) in rats treated with BBN only. PMID- 3855483 TI - Genetics of susceptibility of rats to trigeminal schwannomas induced by neonatal administration of N-ethyl-N-nitrosourea. AB - A genetic analysis was done on the induction of trigeminal schwannomas by N-ethyl N-nitrosourea [(ENU) CAS: 759-73-9] in susceptible LE rats, resistant WF rats, and their F1, F2, and reciprocal backcross hybrids. Both sexes of all strains were given a neonatal sc injection of 40 mg ENU/kg body weight and were sacrificed at 6 months after treatment. Many neurogenic tumors were induced in the central nervous system of all strains of rats. However, the incidence of trigeminal schwannomas in LE rats was 93% in males and 86% in females, whereas in WF rats the incidence was 24% in males and 20% in females. F1 and F2 hybrids showed an intermediate susceptibility (62 and 82% in F1 males, 79 and 86% in F2 males, 26 and 38% in F1 females, and 65 and 77% in F2 females). The incidence in hybrids backcrossed to LE was high (90 and 100% in males and 77 and 83% in females), and the incidence in hybrids backcrossed to WF was low (35 and 38% in males and 11 and 7% in females). The findings suggest that susceptibility to the induction of trigeminal schwannomas by ENU does not result from the expression of genes that are simple dominant or recessive genes. A genetic model involving three independently segregating loci may explain the experimental results. In all strains of rats, particularly the F1 hybrids, males were more susceptible than females to the induction of trigeminal schwannomas by ENU. PMID- 3855484 TI - Potential toxic side effects of folic acid. PMID- 3855485 TI - Uptake of methotrexate linked to polyclonal and monoclonal antimelanoma antibodies by a human melanoma cell line. AB - [3H] Methotrexate [( 3H]MTX) was covalently linked to monoclonal antibody (MoAb) 225.28S against human melanoma, to a rabbit anti-human melanoma IgG absorbed either with human red blood cells (AHMGR) or with red blood cells and a variety of normal human tissues (AHMGR + T), or to normal rabbit IgG (NRG). Human melanoma M21 cells were incubated at 0 degrees C or 37 degrees C with 10 microM free MTX or 10 microM MTX linked to one of the above carriers. The order of net uptake of MTX during 6 hours was MTX-MoAb 225.28S greater than MTX-AHMGR greater than MTX-AHMGR + T greater than MTX-NRG greater than or equal to MTX. This order of uptake by the three antibody conjugates corresponded to the amount of conjugate bound at equilibrium at 0 degrees C and to the immunofluorescence titers. Binding sites for MoAb 225.28S were more efficient for internalization of MTX than were those for the two polyclonal antibody preparations. When M21 cells preloaded with MTX by incubation at a drug concentration of 1.0 or 10 microM were incubated in drug-free medium, the amount of cell-associated MTX rapidly declined to 1.8 pmol/mg protein, i.e., the level of intracellular dihydrofolate reductase (DHFR). However, when cells preloaded to a drug content of 112 pmol/mg protein by incubation with 10 microM MTX linked to AHMGR were transferred to conjugate-free medium, 65 pmol MTX/mg remained cell associated after 12 hours. The efflux was inhibited by chloroquine. Both the efflux medium and M21 cells after a 9.5-hour incubation period had MTX-containing catabolic fragments that inhibited DHFR. PMID- 3855486 TI - Early precursors of site-specific cancers in college men and women. AB - Physical and social characteristics recorded at college physical examination and reported in subsequent questionnaires to alumni in 1962 or 1966 by 50,000 former students from Harvard University and the University of Pennsylvania were reviewed for their relationship to major site-specific cancer occurrence. The records of 1,359 subjects who died with a major site-specific cancer in a 16- to 50-year follow-up period and of 672 subjects who reported such a cancer by mail questionnaire in 1976 or 1977 were compared with those of 8,084 matched classmates who were known to be alive and free of cancer at the time subjects with cancer had died or had been diagnosed. Cigarette smoking, as reported both in student years and years as alumni, predicted increased risk for cancers of the respiratory tract, pancreas, and bladder. Student coffee consumption was associated with elevated risk for leukemia, but it was unrelated to cancers of the pancreas and bladder. Male students with a record of proteinuria at college physical examination experienced increased risk of kidney cancer, and those with a history of tonsillectomy experienced increased risk of prostate cancer. Students who at college entrance reported occasional vague abdominal pain were at elevated risk for pancreatic and colorectal cancers in later years. Increased body weight during college was associated with increased risks of kidney and bladder cancers, whereas for alumni this index was associated only with kidney cancer. Increased weight-for-height during college (but not in 1962 or 1966) predicted increased occurrence of female breast cancer. Jewish students experienced elevated risk for subsequent cancers of the female breast, colon, and combined colorectum. These and other findings are presented as clues deserving further exploration for any etiologic significance that they may hold for the cancer sites studied. PMID- 3855487 TI - Seasonal diagnosis of Hodgkin's disease among young adults. AB - Among 3,707 incident cases of Hodgkin's disease analyzed by month of initially confirmed diagnosis, there was no evidence of seasonal variation for boys or girls (less than 15 yr old) or for older persons (greater than or equal to 40 yr old). However, for young adults (15-39 yr old) there was significant fluctuation of month of diagnosis. February was the month of peak diagnosis both among young men (P = .002) and among young women, although not significant at conventional levels (P = .30). This seasonal variation is consistent with the hypothesis that Hodgkin's disease in young adults is the rare manifestation of a prevalent infection with low pathogenicity. PMID- 3855488 TI - Occupational risks for pleural mesothelioma in Sweden, 1961-79. AB - From national population-based registries linking cancer incidence from 1961 to 1979 with 1960 census data on industry and occupation for all employed individuals in Sweden, a systematic assessment was made of pleural mesothelioma occurrence according to occupational and industrial classifications. There were 318 cases of pleural mesothelioma recorded during the 19-year follow-up period among males employed in 1960, with significant variation by industrial and occupational categorizations. The observed number of pleural mesotheliomas for men employed in the sugar refining, cellulose, wood and pulp, shipbuilding, and railroad equipment manufacturing industries was more than three times the number expected. Occupations with at least twofold excess of mesotheliomas included the craftsman categories of plumbers, mechanics and repairmen, electricians, painters, tire makers, and stationary equipment operators. Our findings are consistent with available data relating mesothelioma to occupational asbestos exposure in other countries, although unexpected associations were found that deserve further epidemiologic study. PMID- 3855489 TI - Proteolytic enzymes in tumor metastasis. I. Plasminogen activator in clones of Lewis lung carcinoma and T10 sarcoma. AB - Plasminogen activator (PA; urokinase) levels were studied in metastatic and nonmetastatic clones of the Lewis lung carcinoma (3LL) and of the T10 sarcoma. Tests of clones grown in vitro revealed that the cell content and secretion of PA correlated positively with the metastatic capacity of the clones of both tumors. When cell-associated activities were examined in cloned cell populations grown subcutaneously in vivo, the apparent activities in the solid tumors produced by low-metastatic clones were equal to or even higher than those in solid tumors produced by high-metastatic clones. This finding was attributed to the observation that solid tumors produced by low-metastatic clones, but not those produced by high-metastatic clones, were highly infiltrated with macrophages. Subsequent tests indicated that the ip inoculation of X-irradiated or mitomycin treated tumor cells of low-metastatic clones elicited a significantly greater peritoneal infiltration of macrophages than did tumor cells of high-metastatic clones. Such "tumor-associated" macrophages manifested high levels of PA, whereas resident (nonactivated) peritoneal macrophages did not. These findings suggest that although PA may cause the initial detachment from the local tumor of both nonmetastatic (via the macrophage PA) and metastatic cells (via their own PA), the PA secreted by the metastatic cells may enable them to complete subsequent stages of the metastatic process that may be PA-dependent. PMID- 3855490 TI - The thyroid gland as source and target of autoimmunity. PMID- 3855491 TI - Multiple primary cancers in the same patient: case reports and a review of the literature. PMID- 3855492 TI - Uncertainty in projecting acute care bed need in South Carolina. PMID- 3855493 TI - Pectoralis major myocutaneous reconstruction of the anterior skull base. AB - It was once believed that prognosis for many patients with neoplasms of the anterior skull base was hopeless. Now, however, craniofacial resection of these lesions has been curative for many patients. Massive resections of the anterior skull base pose many potentially life-threatening complications. Cerebrospinal fluid leakage with meningitis is especially troublesome when previous radiation therapy compromises wound healing. In such circumstances local tissue flaps and skin grafting may not provide reliable separation of the brain from the nose. The pectoralis major flap was utilized in eight patients undergoing anterolateral resection of the skull base. Several major advantages of this technique include: 1. reliable closure of the subarachnoid space; 2. acceptable cosmesis; 3. rapid wound rehabilitation, allowing early postoperative radiation therapy when necessary. PMID- 3855494 TI - Effects of various dietary animal and vegetable proteins on serum and biliary lipids and on gallstone formation in the hamster. AB - The objective of this study was to determine the effects of various dietary animal (casein, bovine albumin and egg albumin) and vegetable (soy, cottonseed and peanut) proteins on serum and biliary constituents and gallstone formation in the hamster. Eighty-four hamsters (60 +/- 5 g) were assigned to either a control group (Purina rat chow) or to one of the 6 experimental groups. Experimental diets contained 20.0% protein. With the exception of hamsters fed egg albumin, gallstone incidence was greater among hamsters fed animal proteins. Hamsters fed egg albumin exhibited a lower concentration of total serum cholesterol and HDL cholesterol than most of the other experimental groups. There were no significant differences between experimental groups for either HDL3-cholesterol concentration or VLDL-LDL-cholesterol concentration. Bile acid concentrations within the vegetable Protein-fed groups were significantly higher than within the animal protein-fed groups. Casein- and bovine albumin-fed hamsters showed a significantly higher percentage of biliary cholesterol in the bile fluid. As the percentage of biliary cholesterol increased, the percentage of bile acids was found to decrease. PMID- 3855495 TI - Comparison of morphology in ALL at presentation and relapse. AB - A high frequency of conversion from L1 to L2 morphology in ALL at relapse has been reported in studies made without benefit of the French-American-British (FAB) scoring system. We compared the lymphoblast morphology at presentation and first hematologic relapse for 50 consecutive children with acute lymphoblastic leukemia using the FAB scoring system to determine the frequency of morphologic conversion. Forty-eight patients presented with L1 morphology, 42 of whom (88%) relapsed with L1 blasts, four (8%) with L2 blasts, and two (4%) with blasts intermediate between L1 and L2. Two presented with L2 morphology, both relapsing with L2 blasts. These data do not support previous findings of a high frequency of conversion from L1 to L2 at relapse. They suggest, instead, that L2 morphology is not a common morphologic expression of initial treatment failure. PMID- 3855496 TI - Granulocytic sarcoma of breast: aleukemic bilateral metachronous presentation and literature review. AB - This report describes an unusual case of bilateral metachronous granulocytic sarcoma of the breast. The patient initially did not have evidence of leukemia and her marrow cell culture in soft agar (CFU-C array) showed normal in vitro growth pattern. The patient was treated with systemic chemotherapy at a time when there was no evidence for systemic disease but she nevertheless developed meningeal leukemia and bone marrow disease 11 and 18 months, respectively, following the initial chemotherapy. PMID- 3855497 TI - Caruncular involvement in myelomonocytic leukemia: a case report. PMID- 3855498 TI - Acute lymphoblastic leukaemia with t(4;11) follows neuroblastoma: a late effect of treatment? AB - The case presented is of a 7-year-old girl who developed acute lymphoblastic leukaemia (ALL) with t(4;11)(q21;q23) 5 years after the onset of neuroblastoma and 4 months after completing treatment for a first relapse. Consideration is given to the relative importance in this case of genetic factors and chemotherapeutic drugs in the etiology of ALL. PMID- 3855499 TI - Myopathy in McArdle's syndrome. Improvement with a high-protein diet. PMID- 3855500 TI - McArdle's disease in the 1980s. PMID- 3855501 TI - Appearance of new variants of membrane skeletal protein 4.1 during terminal differentiation of avian erythroid and lenticular cells. AB - The erythrocyte plasma membrane is lined with a network of extrinsic proteins, mainly spectrin and actin, which constitute a reticulum tethered to the intrinsic anion transport protein of the lipid bilayer through a linker protein, ankyrin. Protein 4.1 forms a stable ternary complex with spectrin and actin, thereby strengthening the reticulum and anchoring it directly to the lipid bilayer or to another intrinsic protein, glycophorin. It has been found recently that spectrin, ankyrin and protein 4.1 are not erythrocyte-specific; this has elucidated further the mechanisms of plasma membrane assembly and modelling during the differentiation of diverse tissues. We have shown previously that protein 4.1 in chickens is most abundant in erythrocytes and lens cells, but is scarce or absent from other spectrin-rich cell types. In addition, it exists as a family of related polypeptides showing differential expression in these two tissues, suggesting variant-specific functions. Here we show that the pattern of protein 4.1 variants changes during the terminal differentiation of erythroid and lenticular cells, with novel variants appearing in postmitotic cells. The accumulation of these variants may lead to the final stabilization of the plasma membrane skeletons of these cells. PMID- 3855502 TI - Decreased expression of N-myc precedes retinoic acid-induced morphological differentiation of human neuroblastoma. AB - Proto-oncogenes may be important in the cellular processes central for the growth and differentiation of normal cells. N-myc is a DNA sequence which shares limited homology to the proto-oncogene c-myc and has been found to be amplified in both primary tissue and cell lines from neuroblastoma, a childhood tumour of neuroectodermal origin. Differentiation of this embryonal tumour is of clinical importance, since occasional tumours have been noted to differentiate in vivo to benign ganglioneuroma. In vitro, many human neuroblastoma cell lines can be induced to differentiate morphologically and biochemically by a variety of agents. Retinoic acid (RA), an analogue of vitamin A, has been shown to inhibit neuroblastoma cell growth and clonability in soft agar, and to induce extensive neurite outgrowth. Therefore we examined the relationship of N-myc expression to the in vitro differentiation of these cells. We report here that in the case of RA-induced differentiation, a decreased level of expression is detected within 6 h of treatment and precedes both cell-cycle changes and morphological differentiation. PMID- 3855503 TI - Cloning and sequence analysis of a cDNA for rat transforming growth factor-alpha. AB - Transforming growth factors (TGFs) are mitogenic polypeptides produced most conspicuously by transformed cells and conferring on normal cells several phenotypic alterations associated with transformation. TGFs comprise two distinct sets of molecules: TGF-alpha s are structurally similar to epidermal growth factor (EGF), binding to and inducing the tyrosine phosphorylation of the EGF receptor in a manner indistinguishable from that of EGF. In addition, the 50 amino acid rat TGF-alpha has 33 and 44% homologies with mouse and human EGFs, respectively, and shares with EGFs a conserved pattern of three disulphide bridges. Thus, it has been proposed that TGF-alpha s belong to a family of EGF like polypeptides. TGF-beta s, on the other hand, display no measurable binding to EGF receptors, but potentiate the growth-stimulating activities of TGF-alpha. Here we report the isolation of a complementary DNA clone encoding rat TGF-alpha. This cDNA hybridizes to a 4.5-kilobase (kb) messenger RNA that is 30 times larger than necessary to code for a 50-amino acid polypeptide and is present not only in retrovirus-transformed rat cells but also at lower levels in normal rat tissues. The nucleotide sequence of the cDNA predicts that TGF-alpha is synthesized as a larger product and that the larger form may exist as a transmembrane protein. However, unlike many polypeptide hormones (including EGF), cleavage of the 50 amino acid TGF-alpha from the larger form does not occur at paired basic residues, but rather between alanine and valine residues, suggesting the role of a novel protease. PMID- 3855504 TI - HLA-DR antigens in multiple sclerosis: two-dimensional gel electrophoresis. AB - Fifty to eighty percent of white patients with clinically definite MS express the DR2 antigen. In patients and normal controls who possess the DR2 antigens, analysis of the polymorphic light chain by two-dimensional polyacrylamide gel electrophoresis revealed no structural differences. PMID- 3855505 TI - Pathogenic mechanisms in recurrent genital candidosis in women. AB - A detailed analysis of the microbiological flora and investigation of the host immune response to Candida albicans was performed on 22 women presenting with a history of recurrent genital candidosis, as defined by at least four clinical episodes, with at least two episodes microbiologically proven, due to C albicans in the preceding 12 months. Disease due to C albicans could occur at low counts (10(2)-10(3)/ml) or very high counts (greater than 10(8)/ml). Immunological investigations indicated that both hypersensitive and anergic states occur, the nature of the host response determining the clinical features noted on presentation. Polymicrobial mixed infections were also noted in six women. Recognition of the nature of the host response is important in understanding the pathogensis of recurrent candidosis and devising effective therapeutic regimes. PMID- 3855506 TI - A national medical information system for New Zealand. PMID- 3855507 TI - Intracranial haemorrhages in Pacific Islander stillbirths: is traditional massage the cause? PMID- 3855509 TI - Myalgic encephalomyelitis. PMID- 3855508 TI - Medical costs of alcohol. PMID- 3855510 TI - Abortion. PMID- 3855511 TI - Cardiopulmonary resuscitation and the doctor. PMID- 3855512 TI - Safety of home deliveries. PMID- 3855514 TI - Cancer research, education, welfare, investment. PMID- 3855513 TI - Neutropenia during therapy with ceftriaxone. PMID- 3855515 TI - Nocturnal enuresis: evaluation of a programme. PMID- 3855516 TI - Doctors in the air. PMID- 3855517 TI - Pirenzepine and gastroduodenal ulcers. PMID- 3855518 TI - Temgesic sublingual. PMID- 3855519 TI - Clinical hirudology: revival of an ancient art. PMID- 3855520 TI - GMS benefit for children. PMID- 3855521 TI - Is hepatitis B a sexually-transmitted disease? PMID- 3855522 TI - A new urinary tract pathogen? PMID- 3855523 TI - Asthma management. PMID- 3855524 TI - Leafy-green coloured infant stools. PMID- 3855525 TI - End-stage renal failure due to familial hypokalaemic interstitial nephritis with identical HLA tissue types. AB - A family in which three siblings had familial hypokalaemic interstitial nephritis is described. There was a close linkage between the renal abnormality and tissue type inheritance. PMID- 3855526 TI - Trauma management: modern concepts. PMID- 3855527 TI - An imperative context for recognition of oral implantology as a dental specialty. PMID- 3855528 TI - The elderly are not now and will never be a homogeneous group. PMID- 3855529 TI - Who is a gerodontist? PMID- 3855530 TI - Development of a teaching program in geriatric dentistry. PMID- 3855531 TI - A geriatric neuromuscular syndrome. A case report. PMID- 3855532 TI - [Role of cytogenetic studies in acute non-lymphoid leukemia in children]. PMID- 3855533 TI - Testicular peritubular cells secrete a protein under androgen control that modulates Sertoli cell functions. AB - Peritubular cells of the seminiferous tubule synthesize component(s) that stimulate Sertoli cells in culture to increase the production of androgen-binding protein and testicular transferrin. The active peritubular cell component(s) are trypsin-sensitive, heat-sensitive, acid-stable molecule(s) having a molecular weight between 50,000 and 100,000. These specific factors(s) are referred to as P Mod-S to designate protein(s), produced by peritubular cells (P), that modulate the functions of Sertoli cells (S). The degree of stimulation by P Mod-S is comparable to that obtained by maximal hormonal stimulation of the synthesis of ABP and transferrin by Sertoli cells. Levels of P Mod-S secreted into the medium by primary cultures of peritubular cells are increased in the presence of testosterone. Comparable concentrations of 17 beta-estradiol do not stimulate peritubular cells to synthesize P Mod-S. Data are interpreted to indicate that androgens act on testicular peritubular cells to increase the formation of P Mod S and that P Mod-S may modulate the properties of adjacent Sertoli cells. Findings are discussed in relation to the nature of mesenchymal-epithelial cell interactions in the seminiferous tubule and to the possible role of P Mod-S as a mediator of androgen actions of Sertoli cells. PMID- 3855534 TI - Use of a replica technique to isolate muscle cell lines defective in expressing the acetylcholine receptor. AB - We have isolated genetic variants of the C2 muscle cell line that are defective in expressing the acetylcholine receptor (AcChoR). Because the AcChoR is expressed only after C2 myoblasts have fused to form myotubes, we employed a replica technique to detect the variants. This technique yields two copies of each clone, one of which can be used for screening and the other, as a source of dividing cells. In a screening of about 10,000 clones derived from mutagenized cells, we found 2 that fused normally and expressed normal levels of acetylcholinesterase but had reduced amounts of AcChoR on their surface. One of these also had a reduced level of intracellular AcChoR, but, in the other, the amount of intracellular AcChoR was 5-fold higher than normal. Several variants were found that failed to fuse and had reduced levels of both AcChoR and acetylcholinesterase. Though we relied on 125I-labeled alpha-bungarotoxin to distinguish wild-type from deficient clones, we found that an antiserum to the AcChoR, followed by a biotinylated second antibody and a horseradish peroxidase avidin complex, could also be used. Therefore, it should be possible to obtain muscle cell variants defective in the expression of a variety of proteins for which specific antibodies are available. PMID- 3855535 TI - Multiple polymorphic alpha- and beta-tubulin mRNAs are present in sea urchin eggs. AB - Multiple alpha- and beta-tubulin RNAs were found in the mature unfertilized eggs of the sea urchin Lytechinus pictus. The alpha-tubulin RNAs were polymorphic in number, size, and relative amounts in the eggs of different females. Five to seven different size classes [1.75-4.2 kilobases (kb)] were detected on RNA gel blots. All egg preparations contained variable amounts of 1.8- and 2.25-kb beta tubulin RNAs, and a few of them contained an additional 2.9-kb beta-tubulin RNA. The total amount of alpha-tubulin RNA did not always parallel that of beta tubulin RNA. A portion of all of the various alpha- and beta-tubulin RNAs were polyadenylylated. RNase H digestions ruled out the possibility that some of these RNAs represented a single transcript bearing different lengths of 3' poly(A). One class of alpha-tubulin RNAs (2.4-2.65 kb) was reduced to 2 kb by RNase H, suggesting the presence of internal oligo(A) regions. All of the egg beta-tubulin RNAs sedimented as free ribonucleoprotein particles. Only a small portion of the 1.75- to 3.6-kb alpha-tubulin RNAs, but most of the 4.2-kb alpha-tubulin RNA, were found on polysomes before fertilization. In the 30-min embryo, small amounts of each of the various alpha- and beta-tubulin RNAs were recruited onto polysomes. Thus, each of the multiple polymorphic alpha- and beta-tubulin RNAs in the egg represent translationally competent mRNA. PMID- 3855536 TI - All components required for the eventual activation of muscle-specific actin genes are localized in the subequatorial region of an uncleaved amphibian egg. AB - Fertilized Xenopus eggs have been ligated with a hair loop into separate fragments before the first cleavage. The plane of the ligation was varied in relation to the animal-vegetal and dorso-ventral axes. The fragments that contained a nucleus were cultured for 24 hr until controls reached the neurula stage; they were then analyzed by S1 nuclease protection for their content of muscle-specific actin mRNA, using a gene-specific probe. We find that all egg components required for the eventual activation of these actin genes are localized, already at the 1-cell stage, in a region below the equator, and mostly on the dorsal (grey crescent) side. This material subsequently occupies the equivalent position in 8-cell and 32-cell embryos. We interpret our results, in combination with the previous work of others, to mean that mesoderm (including muscle) formation in Amphibia depends both on cytoplasmic substances already localized in the egg as well as on inductive cell interactions during cleavage. PMID- 3855538 TI - The presence of a copper/zinc superoxide dismutase in the bacterium Photobacterium leiognathi: a likely case of gene transfer from eukaryotes to prokaryotes. AB - The free-living bacterium Photobacterium leiognathi is also known to be a symbiont of ponyfish. The presence of a copper/zinc superoxide dismutase in P. leiognathi has been considered to be a case of gene transfer from eukaryotes to prokaryotes because this form of superoxide dismutase is normally present only in higher eukaryotic species. However, the amino acid sequence of the enzyme from the bacterium exhibited low identities (25-30%) with the same enzyme from eukaryotes. When amino acid mutations are taken into consideration, the weighted sequence similarity increases significantly; furthermore, the bacterial enzyme has the same active site residues and similar predicted secondary structure as the eukaryotic enzymes. The possibility of convergence is ruled out and the case of divergence is considered unlikely because of the observed phylogenetic distribution of the enzyme. This indicates that the presence of the copper/zinc superoxide dismutase in P. leiognathi can indeed be considered a case of gene transfer from eukaryotic species to prokaryotic species. PMID- 3855537 TI - Injected anti-sense RNAs specifically block messenger RNA translation in vivo. AB - As a test for a method to analyze gene function in embryogenesis, the translation of a specific mRNA has been blocked in vivo by microinjection of complementary (anti-sense) RNA. RNA complementary to globin mRNA was synthesized in vitro by transcription of an inverted globin cDNA clone. After injection into frog oocyte cytoplasm, the anti-sense globin RNA forms a hybrid with globin mRNA and selectively prevents its translation. Deletion mapping of the anti-sense RNA shows that the 5' region of the globin mRNA must be covered in order to block translation. This method may allow one to study the function of many genes for which DNA clones are available by preventing the expression of the endogenous gene as protein. PMID- 3855539 TI - Interaction of selection and biased gene conversion in a multigene family. AB - A model of the evolutionary dynamics of a multigene family in a finite population under the joint effects of selection and (possibly biased) gene conversion is analyzed. It is assumed that the loss or fixation of a polymorphism at any particular locus in the gene family occurs on a much faster time scale than the introduction of new alleles to a monomorphic locus by gene conversion. A general formula for the fixation of a new allele throughout a multigene family for a wide class of selection functions with biased gene conversion is given for this assumption. Analysis for the case of additive selection shows that (i) unless selection is extremely weak or bias is exceptionally strong, selection usually dominates the fixation dynamics, (ii) if selection is very weak, then even a slight conversion bias can greatly alter the fixation probabilities, and (iii) if both selection and conversion bias are sufficiently small, the substitution rate of new alleles throughout a multigene family is approximately the single locus mutation rate, the same result as for neutral alleles at a single-copy gene. Finally, I analyze a fairly general class of underdominant speciation models involving multigene families, concluding for these models under weak conversion that although the probability of fixation may be relatively high, the expected time to fixation is extremely long, so that speciation by "molecular drive" is unlikely. Furthermore, speciation occurs faster by fixing underdominant alleles of the same effect at single-copy genes than by fixing the same number of loci in a single multigene family under the joint effects of selection, conversion, and drift. PMID- 3855541 TI - Eukaryotic transient expression system dependent on transcription factors and regulatory DNA sequences of vaccinia virus. AB - A transient expression system in which chimeric genes are expressed in cells infected with vaccinia virus was developed. Recombinant plasmids containing the promoter regions of vaccinia virus genes ligated to the coding segment of the prokaryotic chloramphenicol acetyltransferase (CAT) gene were constructed. When the plasmids were introduced into vaccinia virus-infected cells by transfection, the chimeric gene was expressed and significant levels of CAT accumulated. CAT activity was not detected when the same recombinant plasmid was introduced into uninfected cells, nor was activity detected when the vaccinia virus promoter was absent from the plasmid or was replaced by simian virus 40 or Rous sarcoma virus promoters. This specificity indicated that expression is dependent on a cis acting vaccinia virus promoter region within the recombinant plasmid and diffusible trans-acting transcription factors produced during virus infection. The lack of effect of a simian virus 40 enhancer element inserted upstream of the vaccinia virus promoter region also distinguished this system from systems dependent on RNA polymerase II. Although replication of the recombinant plasmid could not be detected in either uninfected or vaccinia virus-infected cells, an inhibitor of DNA synthesis significantly reduced CAT expression. This result, as well as the kinetics of CAT synthesis, suggests that replication of viral DNA templates can enhance transcription of chimeric genes in recombinant plasmids. PMID- 3855540 TI - Evidence that a second tumor antigen coded by adenovirus early gene region E1a is required for efficient cell transformation. AB - The expression of the adenovirus (Ad) early coding region 1a (E1a) is required for virus-induced cell transformation and for the activation of other viral early genes and some cellular genes. Two overlapping early mRNAs of 13S and 12S that are transcribed from this region code for a 289-amino acid protein and a 243 amino acid protein, respectively. Earlier studies have shown that the 289-amino acid protein is essential for cell transformation. We have constructed an Ad type 2 (Ad2) deletion mutant (dl231) in which the intervening sequence for the 13S mRNA is precisely removed. Mutant dl231 is completely viable in human KB cells and produces normal amounts of 13S mRNA but much reduced amounts of a defective 12S mRNA. Mutant dl231 induces focal transformation of established rat embryo fibroblasts at a frequency one-fifth to one-half that of wild-type virus. However, the transformed cells are defective in their ability to form anchorage independent colonies on semisolid medium. Therefore, our results demonstrate that the 243-amino acid protein is required for full transformation of rat embryo cells. PMID- 3855542 TI - Inhibition of thromboxane synthesis ameliorates the progressive kidney disease of rats with subtotal renal ablation. AB - Ablation of greater than 70% of renal mass in the rat results in hypertension, proteinuria, and glomerular sclerosis of the remnant kidney. Rats with a remnant kidney have increased excretion of thromboxane in the urine when compared with normal rats. Chronic oral administration of OKY 1581, an inhibitor of thromboxane synthesis, in rats with a remnant kidney increases renal blood flow and glomerular filtration rate (GFR), decreases protein and thromboxane excretion in the urine, lowers blood pressure and cardiac index, and improves renal histology. The degree of hypertrophy of the remnant kidney was unaffected by administration of OKY 1581. Calculated values for single nephron plasma flow and GFR were significantly greater in rats with remnant kidneys given OKY 1581 than in rats given saline. Acute i.v. administration of OKY 1581 increased renal plasma flow and GFR in rats with a remnant kidney but not in normal rats or rats with a remnant kidney previously treated with acetylsalicyclic acid. OKY 1581 markedly inhibited platelet aggregation. We suggest that in this model of renal disease platelet aggregation and intraglomerular thrombosis play a key role in the development of glomerulosclerosis. Inhibition of platelet aggregation prevents development of glomerulosclerosis, hypertension, and cardiac hypertrophy. We suggest that hyperperfusion and hyperfiltration per se occurring in remnant glomeruli are not directly responsible for the development of glomerulosclerosis. PMID- 3855543 TI - A retroviral myc gene induces preneoplastic transformation of lymphocytes in a bursal transplantation assay. AB - Treatment of chicken embryos with cyclophosphamide results in ablation of bursal lymphocytes. Bursal follicles can be reconstructed by infusion of embryonic bursal cells. Histologic examination of reconstituting bursal follicles showed that the first lymphocytes to appear were large pyrinophilic lymphoblasts that lined up adjacent to the bursal basement membrane and appeared to serve as progenitors for the differentiation of bursal medullary lymphocytes. When these cells were infected with the avian myelocytomatosis virus HB1 bearing a v-myc oncogene they appeared to home to the region of the bursal basement membrane but failed to differentiate. Instead, they formed structures indistinguishable from the preneoplastic transformed follicles that develop during bursal lymphomagenesis induced by lymphoid leukosis viruses. The DNA from these transformed follicles contained the HB1 v-myc gene but lacked the ability to transform NIH/3T3 mouse cells. Therefore these preneoplastic lesions were induced directly by HB1 myc and did not require the expression of Blym-1 or similar oncogenes. Exploitation of this transplantation technique with the chicken bursa will provide a useful method for assessing the stage-specific activity of oncogenes in vivo. PMID- 3855544 TI - Statistical test of linearity of photoreceptor transduction process: Limulus passes, others fail. AB - We present the results of a theoretical analysis of a completely general linear chain model for transduction in photoreceptors from which we have derived a statistical test for the intrinsic linearity of the single-photon transduction process. By linearity we mean comprising first-order chemical reactions only. We show results of our own measurements in Limulus ventral photoreceptors that pass this linearity test, suggesting that the single-photon transduction in Limulus may be a simple chain of first-order biochemical reactions (plus possible diffusional processes). However, we also demonstrate that published data show the existence of strong nonlinearities in the single-photon responses of toad and perhaps also of locust. Such nonlinearities are not difficult to construct from existing biochemical notions (feedback, cooperativity), but all but one [Kramer, L. (1975) Biophys. Struct. Mech. 1,239-257] of the published analytical models of the single-photon process have been linear. The test we have used is the distribution of "areas" (time integrals of conductance changes) of single-photon responses or "bumps." Reasonable molecular linear chain models do not allow distributions very sharply peaked at non-zero values. Such peaked distributions are seen in toad and locust but not in Limulus. PMID- 3855545 TI - Sequences of the S1 genes of the three serotypes of reovirus. AB - The S1 genes of the three serotypes of reovirus have been cloned and sequenced. The S1 genes encode protein sigma 1, the protein against which serotype-specific neutralizing antibodies are directed; it is also the reovirus hemagglutinin and cell-attachment protein and is a major determinant of host range/tissue specificity and of the nature of the interaction of reovirus with cells of the immune system. The S1 genes of serotypes 1, 2, and 3 are 1458, 1442, and 1416 nucleotides long, respectively. They possess untranslated regions 13, 13, and 12 nucleotides long at their 5' termini and 188, 229, and 36 nucleotides long at their 3' termini. They possess two open reading frames. The first starts with a "weak" initiation codon and extends for 418, 399, and 455 codons, respectively; this is the size expected for the sigma 1 proteins. The other reading frame starts at a "strong" initiation codon about 70 residues downstream from the 5' terminus but extends for only about 120 codons, being terminated by 3 in-phase termination codons in all three genes. The proteins encoded by these short open reading frames are quite basic. The serotype 1 and 2 S1 genes are much more closely related to each other (28% homology) than to the serotype 3 S1 gene (5% and 9% homology, respectively). These figures are based on direct homology calculations, adjusted for 25% random coincidence. Serologic evidence and hydrophobicity profiles agree that the sigma 1 proteins of serotypes 1 and 2 are much more closely related to each other (about 40% homology) than to that of serotype 3 (only about 20% homology). The fact that the serotype 1 and 2 S1 genes are much more closely related to each other than to the serotype 3 S1 gene is remarkable since for all other nine reovirus genes the serotype 1 and 3 genes are much more closely related to each other than to the serotype 2 gene. Mechanisms that may effect this remarkable evolutionary pattern are discussed. PMID- 3855546 TI - Transmissible spongiform encephalopathy in the gray tremor mutant mouse. AB - Gray tremor (gt) is an autosomal recessive mutation in the mouse linked to caracul (Ca) on chromosome 15. The complex mutant phenotype includes pigmentation defects, tremor, seizures, hypo- and dysmyelination in central and peripheral nervous systems, spongiform encephalopathy, and early death. The heterozygote (+/gt) is phenotypically normal but develops a mild spongiform encephalopathy from 2 months of age onward. The pigmentation and myelination disorders indicate that the gt genetic locus is active neonatally and probably earlier. This report focuses mainly on the later-expressed vacuolating disorder, which most closely mimics in tissue distribution, histopathology, and ultrastructure the spongiform encephalopathies caused by unconventional transmissible agents. This lesion was produced in genetically normal mice in a transmission experiment: of 99 neonatal mice inoculated intracerebrally with gt/gt brain homogenate, all 7 mice of three strains (BALB/cBy, C3HeB/FeJ, and C57BL/6J) allowed to survive for the unusually long interval of 682-721 days after inoculation, developed spongiform changes distributed as in the mutant phenotype. The gray tremor mutant presents a naturally occurring spongiform encephalopathy whose expression is determined by the interaction of genetic factors and a transmissible agent. PMID- 3855548 TI - Reovirus hemagglutinin mRNA codes for two polypeptides in overlapping reading frames. AB - Human reovirus s1 mRNA, which codes for the viral hemagglutinin, also directs the synthesis of a previously unrecognized polypeptide of molecular mass 14 kDa in reticulocyte and wheat germ extracts. Hybrid-arrest of translation by selected restriction fragments of cloned S1 DNA indicated that synthesis of the 14-kDa polypeptide initiates at the second AUG. This was confirmed by NH2-terminal sequence analyses. The coding sequence for the 14-kDa polypeptide thus lies entirely within the hemagglutinin gene but in a different reading frame. Although not found in virions, the 14-kDa polypeptide apparently is formed in virus infected mouse L cells, as demonstrated by comparison of [35S]methionine-labeled polypeptides in cell extracts with the corresponding in vitro products. PMID- 3855547 TI - Isolation of tyrosine-O-sulfate by Pronase hydrolysis from fibronectin secreted by Fujinami sarcoma virus-infected rat fibroblasts. AB - In a recent paper, we reported the loss of large amounts of protein-bound tyrosine sulfate after infection of rat fibroblasts by avian sarcoma viruses. The analogy to the reported loss of surface fibronectin on malignant transformation, which contained sulfate of unknown location, called our attention to this compound. In a previous paper, we briefly reported on isolation from the supernatant fraction of rat fibroblasts infected by Fujinami sarcoma virus fibronectin that yielded tyrosine-O-sulfate on Pronase hydrolysis. In this paper, we confirm and enlarge on this observation. Highly purified fibronectin was obtained from the supernatant fraction secreted by Fujinami sarcoma virus infected rat fibroblasts that contained 1.52 residues of sulfated tyrosine per protein molecule after exhaustive Pronase hydrolysis. Assuming some loss during work up, this probably indicates 2 residues of the tyrosine sulfated per fibronectin molecule. PMID- 3855549 TI - Transcription of three c-myc exons is enhanced in chicken bursal lymphoma cell lines. AB - The chicken c-myc gene, as defined by its homology to the v-myc gene of MC29 virus, is comprised of two exons. Using the techniques of runoff transcription, primer extension, and S1 nuclease protection, we demonstrate that there is a third c-myc exon of approximately equal to 345 base pairs (bp) located 0.7 kbp upstream of the 5' end of the v-myc homology. This first exon is transcribed and present in myc mRNA in normal chicken cells. We also examined RNA from five cell lines derived from avian leukosis virus-induced bursal lymphomas. In all these lines, the level of transcription of the 2.2- to 2.5-kbp myc mRNA is increased 30 to 60-fold over normal cells. The myc mRNA in four of these lines also contains increased levels of the first noncoding exon, and evidence is presented that the long terminal repeat (LTR) in the vicinity of c-myc is functioning as an enhancer of c-myc transcription rather than as a promoter in several of these cell lines. In two cell lines in which the viral LTR has integrated between the first and second exons in the proper orientation for downstream promotion of myc, the LTR does not exhibit promoter function. The pattern of c-myc transcription observed by others in a vast majority of avian leukosis virus-induced neoplasms is not observed in any of the five cell lines examined. PMID- 3855551 TI - The primary process of vision and the structure of bathorhodopsin: a mechanism for photoisomerization of polyenes. AB - A model for the primary process of vision is proposed, which involves a novel concerted-twist motion. Application of such motions to rhodopsin and bathorhodopsin successfully accounts for the properties of bathorhodopsin and related intermediates, including specific assignment of molecular structures to bathorhodopsin, to lumirhodopsin, and, less specifically, to hypsorhodopsin. PMID- 3855550 TI - Complete amino acid sequence of human hemopexin, the heme-binding protein of serum. AB - We have determined the complete primary structure of human hemopexin, a plasma beta-glycoprotein that specifically binds one heme with high affinity and transports it to hepatocytes for salvage of the iron. Human hemopexin (Mr approximately equal to 63,000) consists of a single polypeptide chain containing 439 amino acid residues with six intrachain disulfide bridges. The amino-terminal threonine residue is blocked by an O-linked galactosamine oligosaccharide, and the protein has five glucosamine oligosaccharides N-linked to the acceptor sequence Asn-X-Ser/Thr. The 18 tryptophan residues are arranged in four clusters, and 12 of the tryptophans are conserved in homologous positions. Computer assisted analysis of the internal homology in amino acid sequence indicates that hemopexin consists of two similar halves, thus suggesting duplication of an ancestral gene. Limited tryptic digestion cleaves apohemopexin after arginine-216 into two half-molecules, whereas heme-saturated hemopexin is cleaved after lysine 101. The half-molecules are connected by a histidine-rich hinge-like region that contains two glucosamine oligosaccharides. A structural model for human hemopexin is proposed that is based on these properties and on computer-assisted predictions of the secondary structure and the hydrophilic/hydrophobic character. In this model alpha-helices and beta-turns predominate, and the two halves are connected by an exposed connecting region in apohemopexin that becomes inaccessible to trypsin in hemesaturated hemopexin. Many segments of hemopexin are similar to sequences of other heme proteins, but no overall structural relationship of hemopexin to any other heme protein was identified. PMID- 3855552 TI - Electronegativity and hardness as coordinates in structure stability diagrams. AB - With electronegativity and hardness of an atom defined as 1/2(I + A) and 1/2(I - A), respectively, where I and A are the ionization potential and electron affinity, electronegativity difference and hardness sum are proposed as coordinates in structure stability diagrams. With these coordinates a successful topological classification of the crystal structures of octet and suboctet binary compounds is obtained, and a clear delineation of the structural classes portraying chemical periodicity is found. PMID- 3855553 TI - Calmodulin binding to the cytoskeletal neuronal calmodulin-dependent protein kinase is regulated by autophosphorylation. AB - A brain cytoskeletal preparation that is highly enriched in calmodulin-dependent protein kinase facilitated the study of the binding of 125I-labeled calmodulin to the native enzyme. The binding was specific, saturable, Ca2+-dependent, and inhibited by trifluoperazine. Stoichiometric analysis revealed that the ratio of bound calmodulin to the alpha subunit of the protein kinase was about 1:10 (+/ 30%), indicating that in the native state not all of the enzyme subunits were accessible to bind calmodulin. The Kd for the binding reaction was 7 X 10(-9) M and was subject to regulation by divalent cations other than Ca2+, decreasing to 1.7 X 10(-9) M in the presence of 7 mM MgCl2. Activation of the protein kinase in the presence of Ca2+ and calmodulin resulted in marked autophosphorylation of the enzyme subunits. The autophosphorylation was accompanied by a 2-fold decrease in the affinity and number of 125I-labeled calmodulin binding sites. This effect was also reflected by an increase in the apparent Km for Ca2+ from 90 to 200 X 10(-9) M. Thus, enzyme autophosphorylation appears to represent a negative feedback signal, rendering the enzyme less sensitive to subsequent stimulation by physiologic increases in the intracellular Ca2+ concentration. These results help to clarify the mode of neuronal intracellular Ca2+ signaling. PMID- 3855554 TI - Isolation and characterization of factors from wheat germ that exhibit eukaryotic initiation factor 4B activity and overcome 7-methylguanosine 5'-triphosphate inhibition of polypeptide synthesis. AB - Three highly purified preparations (preparations I, II-1, and II-2) have been obtained from wheat germ and shown to support in vitro polypeptide synthesis directed by capped or uncapped mRNAs in a eukaryotic initiation factor 4B (eIF 4B)-deficient system. The three preparations differ, however, in polypeptide composition and in the ability to overcome the inhibitory effect of 7 methylguanosine 5'-triphosphate (m7GTP) on in vitro polypeptide synthesis. Preparation I contains two polypeptides (Mr = 80,000 and 28,000), which are present in a 1:1 molar ratio and are associated in a high molecular weight complex. Preparation II-1 contains two major polypeptides (Mr = 220,000 and 26,000) and preparation II-2 also contains two major polypeptides (Mr = 110,000 and 26,000). Preparations II-1 and II-2 are high molecular weight complexes; neither contains detectable amounts of a Mr 80,000 or a Mr 50,000 component. Preparations II-1 and II-2 both overcome m7GTP inhibition, whereas preparation I does not. These findings raise several questions with regard to the identity of eIF-4B and its relationship to cap recognition factors. PMID- 3855555 TI - Primary structure of rat thymus prothymosin alpha. AB - The primary structure of prothymosin alpha from rat thymus, containing 113 amino acid residues, is reported as follows: (formula; see text) The sequence of the first 28 amino acids at the NH2 terminus is identical to that of calf thymosin alpha 1. The dicarboxylic amino acids, which account for nearly half of the total residues in prothymosin alpha, are largely clustered in the central portion of the polypeptide chain. The polypeptide contains no aromatic or sulfur-containing amino acids. A computer analysis of the three-dimensional structure based on the primary sequence suggests that the molecule is composed of at least five alpha helical regions interrupted by one short extended chain and three short random coils. PMID- 3855556 TI - Inhibition of human platelet phospholipase A2 activity by unsaturated fatty acids. AB - Phospholipase A2 (PLA2; phosphatide 2-acylhydrolase, EC 3.1.1.4) activity from human platelets increases significantly when the enzyme is separated from an endogenous inhibitor(s). The inhibitor, associated mainly with a particulate fraction, has now been identified as a mixture of unsaturated fatty acids. Treatment of the inhibitor with trypsin, RNase, DNase, or heat did not diminish its inhibitory activity, which was extractable by organic solvents. Incubation of PLA2 with phospholipids or various neutral lipids, including saturated fatty acids, had little or no effect on enzymatic activity. In contrast, unsaturated fatty acids such as palmitoleic acid (16:1), oleic acid (18:1), linoleic acid (18:2), linolenic acid (18:3), arachidonic acid (20:4), all of which were detected in the particulate fraction, or longer chained unsaturated fatty acids inhibited PLA2 activity by 50% at approximately equal to 5 X 10(-7) M. The level of unsaturated fatty acids in the inhibitor fraction was equivalent to approximately equal to 10(-4) M, apparently sufficient to effectively inhibit PLA2 activity. Methylation of unsaturated fatty acids caused a complete loss of inhibitory activity, and subsequent demethylation restored the activity, suggesting that a free carboxyl group was necessary. Inhibition of PLA2 by unsaturated fatty acids appeared to be noncompetitive. PLA2 absolutely required Ca2+ for activity; the inhibition by unsaturated fatty acids was not reversed by Ca2+. The finding that unsaturated fatty acids are potent inhibitors of PLA2 would explain its generally low activity in human platelet extracts and its marked increase of activity during the course of enzyme purification. PMID- 3855557 TI - An enhancer-like element in the adenovirus E2 promoter contains sequences essential for uninduced and E1A-induced transcription. AB - Using a chloramphenicol acetyltransferase gene under the control of a series of adenovirus E2 promoter mutants, we have determined the sequence requirements for E1A-induced as well as uninduced expression of the E2 promoter. Fully induced expression requires 79 nucleotides of upstream sequence, and the same sequences are required for uninduced expression. A promoter containing 70 nucleotides of upstream sequence is inducible, although to a lower level than wild type, while a promoter containing 59 nucleotides of upstream sequence is not inducible. The sequences required for induction as well as for uninduced promoter activity map between 21 and 79 nucleotides upstream of the transcriptional initiation site and function in either orientation and at a distance. We suggest that E1A-mediated induction involves the effective increase in a factor utilizing this upstream site and that the factor can functionally interact with the site irrespective of its location relative to the start of transcription. PMID- 3855558 TI - Imaging of optically active biological structures by use of circularly polarized light. AB - If an optically active (chiral) sample is placed in a microscope and illuminated with circularly polarized light, an image can be formed that is related to the circular dichroism of each feature of the sample. A theoretical investigation has been done for the circular differential image obtained by subtracting the images formed under right- and left-circularly polarized light. Two types of differential images are possible: (i) dark-field images formed from light reflected or scattered by the sample and (ii) bright-field images formed from light transmitted through the sample. The sign and magnitude of each feature in a circular differential image strongly depend on the structure of the sample. The dark-field circular differential images are most sensitive to large features with dimensions similar to the wavelength of illumination whereas the bright-field images are most sensitive to the short-range molecular order. Applications of circular differential imaging may include clinical fingerprinting of normal and transformed cells and structural analysis of individual cellular components. PMID- 3855559 TI - Unmodified low density lipoprotein causes cholesteryl ester accumulation in J774 macrophages. AB - Cholesteryl ester (CE)-loaded macrophages (foam cells) are a prominent feature of atherosclerotic plaques. Previous studies have shown that human monocytes or resident mouse peritoneal macrophages accumulate CE in response to low density lipoprotein (LDL) only when the LDL has been appropriately chemically modified. By contrast, we report here that J774 macrophages accumulate large amounts of CE when incubated with unmodified LDL. The CE is stored in oil red O-positive droplets, which have the typical appearance of foam cell inclusions by electron microscopy. The fatty acid moieties of the cellular CE are enriched in oleate unlike those of LDL-CE, which are enriched in linoleate, indicating that the LDL CE undergoes hydrolysis and reesterification by acyl CoA:cholesterol acyltransferase. Studies with 125I-labeled LDL at both 4 degrees C and 37 degrees C indicate that the LDL is internalized by a specific receptor that has several characteristics in common with the apolipoprotein B/E (apo B/E) receptor. However, in comparison with fibroblasts, the LDL receptor and 3-hydroxy-3 methylglutaryl-coenzyme A (HMG-CoA) reductase activity in J774 cells are relatively resistant to down-regulation by LDL or 25-hydroxycholesterol, leading to receptor-mediated CE storage. In addition, J774 cells appear to accumulate CE from LDL internalized by nonspecific means. Thus, macrophage-like cells can accumulate CE in response to unmodified LDL by both nonspecific and receptor mediated processes. PMID- 3855560 TI - Quantitative assessment of the role of O6-methylguanine in the initiation of carcinogenesis by methylating agents. AB - Induction of transformation, cell lethality, and DNA lesions were quantitatively compared in Syrian hamster embryo cells (HEC) treated with three different methylating agents: N-methyl-N'-nitro-N-nitrosoguanidine (MNNG), N-methyl-N nitrosourea (MNU), or methyl methanesulfonate (MMS). Each induced transformation in a dose-dependent manner. On a molar basis, MNNG was approximately equal to 100 and 500-fold more effective than MNU and MMS, respectively. For each carcinogen the induction and repair of O6- and N7-methylguanine (O6- and N7-MeGua) relative to total guanine content was compared. At concentrations that induced equivalent transformation frequencies, the induction of O6-MeGua was the same for all three carcinogens, but N7-MeGua induction was 30-fold higher with MMS than with MNNG or MNU. The capacity to repair methylation lesions in HEC is limited because only between 50% and 70% of both O6- and N7-MeGua lesions were removed from the DNA within 24 hr after treatment, independent of methylating carcinogen. No consistent effect on either the rate of DNA replication or the size distribution of nascent strands correlated with O6-MeGua induction. These data support the hypothesis that O6-MeGua is the critical lesion for initiation of carcinogenesis by methylating agents. The frequency of transformation relative to O6-MeGua induction is 40- to 750-fold more than that of mutation. Based on the quantitative data for induction of O6-MeGua and transformation, the target size for initiation of carcinogenesis was calculated as a minimum of 10(4) nucleotides. This suggests that one of many genes can initiate carcinogenesis or that initiation is not the result of a single base mutation. PMID- 3855561 TI - Phase-change kinetics for a microtubule with two free ends. AB - The two-phase macroscopic kinetic model of the end of a microtubule is extended to microtubules in solution, with two free ends. The theoretical treatment of this system is complicated by the possibility of microtubules shortening all the way to disappearance. Another possibility, if a microtubule is shortening from one end only (and has a GTP cap on the other end), is that completed shortening will leave a residual cap from which growth can then take place at both ends. Two approximations are introduced. PMID- 3855562 TI - Adolescence in Tetrahymena thermophila. AB - The development of sexual maturity in Tetrahymena thermophila has been shown to include an intermediate stage, adolescence, during which cells are capable of mating with mature cells but not other adolescent cells. When the progeny of successfully mated cells are grown logarithmically and tested frequently for the ability to mate, they are unable to form mating pairs for about 65 generations. This period is known as immaturity. During the next stage, the progeny pair with mature cells but not with other adolescent cells despite the presence of complementary mating types. Adolescence persists for 20-25 generations before the cells attain maturity, which is defined as the ability to mate with any cell of different mating type. Once paired with mature cells, adolescents successfully complete conjugation. Cytological preparations show that both members of the pair undergo meiosis and form macronuclear anlagen. The proteins synthesized during a mating between adolescents and mature cells are similar to those synthesized during a mating between mature cells as determined by two-dimensional gel analysis. Both the adolescent cell and the mature partner contribute genetic markers to the progeny. PMID- 3855563 TI - Mammalian reticulocytes lose adhesion to fibronectin during maturation to erythrocytes. AB - We describe three situations in which a large fraction of circulating red blood cells attach tightly and specifically to fibronectin: (i) rabbits made anemic by repeated bleeding, (ii) patients with hemolytic anemia and functional asplenia and splenectomized normal humans, and (iii) splenectomized mice. Upon induction of anemia in rabbits, the proportion of circulating red blood cells capable of specifically attaching to fibronectin-coated plastic increased in parallel with the number of reticulocytes. Fibronectin-adherent red cells were barely detectable when the rabbit had recovered from the anemia. Attachment of reticulocytes to fibronectin was specific; cells did not attach to dishes coated with albumin, laminin, or collagen. None of these proteins promoted the attachment of normal erythrocytes. About 75% of the erythrocytes from splenectomized mice (but not control mice) also attached specifically to fibronectin 40 days after surgery. The effect of splenectomy was incomplete and transient; adherent cells were not detectable 8 weeks after splenectomy. As judged by labeling studies with [35S]methionine, newly emergent reticulocytes preferentially attached to fibronectin. We suggest that about half of the reticulocytes in erythropoietically unstressed mice lose their ability to attach to fibronectin, possibly due to loss of fibronectin-adhesive components, during passage through the spleen. The others lose their ability to interact with fibronectin before release, in the bone marrow, or in some extrasplenic site. PMID- 3855564 TI - Molecular approach to thermogenesis in brown adipose tissue: cDNA cloning of the mitochondrial uncoupling protein. AB - The uncoupling protein (UCP) of mammalian brown fat is a specialized and unique component responsible for energy dissipation as heat. Translation and immunoprecipitation from sucrose-fractionated mRNA indicated that the mRNA of UCP sedimented at 14-16 S. A recombinant cDNA library prepared from mRNA of thermoactive brown fat enriched for UCP mRNA has been constructed and cloned in Escherichia coli. Recombinant plasmids were screened by differential colony hybridization to a cDNA probe complementary to poly(A)+ RNA isolated from thermogenic or from weakly thermogenic brown fat. Several differentially hybridizing plasmids were shown to contain UCP cDNA sequences by their ability to select a mRNA coding for an in vitro translation product that was immunoprecipitable with antibodies against UCP. Blot hybridization of brown fat mRNA to a 32P-labeled UCP cDNA probe revealed two major species of mRNA (15S and 18S). As compared to non-thermogenic tissue, a strikingly increased hybridization to the probe was observed with brown fat mRNA from thermoactive tissue. Moreover, hybridization was observed with RNA of brown adipose tissue from rat, hamster, or mouse but not with RNA from rat or mouse liver. PMID- 3855565 TI - Oxidative stress and protective mechanisms in erythrocytes in relation to Plasmodium vinckei load. AB - The protection of mouse erythrocytes (RBC) parasitized with Plasmodium vinckei vinckei against activated oxygen species was examined in relation to the intraerythrocytic parasite load. RBC from highly infected animals were separated by density gradient centrifugation into six bands with increasing parasite content and with parasitemias ranging from 17% to 100%. Increase in parasite load was accompanied by a decrease in the activities of the enzymes superoxide dismutase (EC 1.15.1.1), catalase (EC 1.11.1.6), glutathione peroxidase (EC 1.11.1.9), glutathione reductase [NAD(P)H] (EC 1.6.4.2), and NADH-methemoglobin reductase (EC 1.6.2.2; NADH:ferricytochrome b5 oxidoreductase) in the RBC lysates. In contrast, the total amount of reduced glutathione increased in the highly parasitized bands. Furthermore, the vitamin E content of all RBC bands, including the one that contained mainly nonparasitized erythrocytes, was 3- to 5 fold higher than that of control noninfected RBC. Increasing parasite load was accompanied by an increase in the production of malonyldialdehyde, indicating enhanced lipid peroxidation. Our results indicate that oxidative stress is experienced by all RBC during a malarial infection and is accompanied by a variety of changes in the antioxidant defense mechanisms of the host and the parasite. Furthermore, it appears that the plasma membrane of the host cell is better protected against oxidative injury than are the membranes surrounding the parasite. PMID- 3855567 TI - Comparison of chemically induced and spontaneous murine thymic lymphomas in RF and AKR mice: differential expression of c-myc and c-myb. AB - Expression of 11 cellular oncogenes was determined in normal vs. lymphomatous thymic tissues of RF and AKR mice; only c-myc and c-myb transcripts were detected in an age-inappropriate pattern in thymomas. Normal thymocytes from young RF mice contained RNA transcripts of both genes, but the transcripts were no longer detected at 9 or more weeks of age. More than 90% of RF thymomas, occurring at 20 28 weeks of age after skin painting with 3-methylcholanthrene at 12 weeks, contained c-myc transcripts, and 70% of the tumors contained c-myb transcripts. Seven cell lines derived from these 3-methylcholanthrene thymomas expressed both cellular genes, as did 2 rare spontaneous thymomas of 12-month-old RF mice. No indication of rearrangement or amplification of either gene was seen in any of the RF tumors or cell lines. In AKR mice, transcripts of the 2 genes persisted longer in the normal thymus than in RF mice, but they were no longer detected at 26 weeks of age. Of 3 thymomas in 6-month-old 3-methylcholanthrene-treated AKR mice, all expressed c-myb and 2 expressed c-myc. Among 11 spontaneous AKR thymomas, however, only 2 showed detectable levels of both genes, and 2 more expressed c-myc or c-myb but not both. PMID- 3855566 TI - Neuropeptide Y affects secretion of luteinizing hormone and growth hormone in ovariectomized rats. AB - Neuropeptide Y (NPY) has recently been localized in the rat hypothalamus. We have evaluated the effects of NPY on hypothalamic and pituitary function by injecting NPY into the third ventricle in vivo and by examining its action on perifused pituitary cells in vitro. Injections of NPY into the third ventricle of conscious ovariectomized rats led to a dramatic and highly significant reduction in plasma luteinizing hormone (LH) relative to pretreatment levels in these animals or to those of controls injected with physiological saline. Significant inhibition was obtained with doses ranging from 0.02 to 5.0 micrograms (4.7-1175 pmol) of NPY. These inhibitory effects on LH release were dose dependent and lasted for at least 120 min after injection of 5.0 micrograms of NPY. Intraventricular injection of NPY also significantly decreased plasma growth hormone; however, the threshold dose was 2.0 micrograms (470 pmol), a dose 100-fold greater than the lowest dose that inhibited LH release. Plasma follicle-stimulating hormone was unaffected by injection of NPY. NPY (10(-6) and 10(-7) M) stimulated secretion of LH, growth hormone, and follicle-stimulating hormone from perifused anterior pituitary cells loaded in a Bio-Gel P-2 column. These results indicate that NPY acts on structures adjacent to the third ventricle to inhibit the secretion of LH and growth hormone but not follicle-stimulating hormone, whereas it can directly stimulate the secretion of all three hormones from the cells of the anterior pituitary in vitro. Since NPY has been found in the hypothalamus and median eminence, it is quite likely that it plays a physiologically significant role at both hypothalamic and pituitary sites: influencing secretion of pituitary hormones. PMID- 3855568 TI - Ascorbic acid mediates acetylcholine receptor increase induced by brain extract on myogenic cells. AB - Extracts of fetal calf brain cause a 3- to 5-fold increase in acetylcholine receptors (AcChoR) on cultured myogenic L5 cells. Purification of the substance causing the major portion of this receptor increase has been completed. Ultraviolet spectral characteristics, nuclear magnetic resonance, mass spectra, and AcChoR induction by the active factor are the same as those of commercially available ascorbic acid. The biological activity of ascorbic acid is not mimicked by reducing agents with or without sulfhydryl groups. Compounds related to ascorbic acid were tested for their ability to induce AcChoR increases on L5 cells. D-Isoascorbic acid is the only substance with identical biological activity to ascorbic acid. Dehydroascorbic acid and ascorbic acid 2-O-sulfate also induce AcChoR increases but with lower specific activity. These data show that ascorbic acid can play a role in regulating AcChoR expression in myogenic tissue, and the presence of ascorbic acid in the purified fraction from fetal calf brain accounts for its ability to increase AcChoR in L5 cells. PMID- 3855569 TI - Different effects of N-ethylmaleimide on M1 and M2 muscarine receptors in rat brain. AB - N-Ethylmaleimide (MalNEt) disclosed three differences between M2 muscarine receptors in membranes from the rat brainstem and M1 receptors in the hippocampus. At 0.1 mM, MalNEt completely interconverted the higher affinity state of M2 receptors for carbachol to a lower affinity state, while having no effect on the two affinity states of M1. This "uncoupling" effect is similar to that produced by guanine nucleotides and appears to be due to separation of an agonist-receptor complex from a guanine nucleotide-binding protein. Higher MalNEt concentrations (1-5 mM) increased the affinity of uncoupled M2 receptors, again without effect on M1 states. Finally, in MalNEt, the affinity of M2 receptors for carbachol was different from values for M1 receptors. Thus, MalNEt is an excellent agent for distinguishing M1 and M2 receptors and the two states of M2 receptors. MalNEt had no effect on the affinity or M1-selectivity of the antagonist pirenzepine. PMID- 3855570 TI - Life span and tumor incidence in rats receiving postradiation treatment with ATP AET-mexamine mixture. AB - Rat females were exposed to a single 4.0-Gy gamma-ray dose and treated postradiation with a mixture of ATP-AET-mexamine at daily doses of 24, 12, and 3 mg/kg body wt, respectively, in drinking water throughout the period of their survival. With the radiation dose used, life shortening appeared primarily attributable to nonstochastic effects. The mixture of chemical protectors failed to show modification of long-term radiation effects with regard to either life span or tumor incidence. PMID- 3855571 TI - Intermediate and high-dose ARA-C and m-AMSA (or daunorubicin) as remission and consolidation treatment for patients with relapsed acute leukaemia and lymphoblastic non-Hodgkin lymphoma. AB - 27 patients (aged 15-55 years) with relapsed acute myelogenous (AML) and lymphoblastic leukaemia (ALL), and with lymphoblastic non Hodgkin's lymphoma (NHL) have been treated with intermediate dose cytosine arabinoside (AraC, 1 g/m2 q 12 h X 12) and 3 d of m-AMSA (20 patients), 90-115 mg/m2 daily, or daunorubicin (7 patients). 18 of them attained a complete remission (AML 10/14, ALL 3/5, NHL 5/8). 7 patients received consolidation treatment with 1-2 courses comprising 4 d of AraC (3 g/m2 q 12 h X 8) and m-AMSA (90-115 mg/m2) on d 5 of each course. 2 patients underwent allogeneic bone marrow transplantation and 9 received no further treatment after remission induction. In addition to vomiting, fever and conjunctivitis, toxicity in 6 patients included a combination of severe diarrhoea, fever and signs of paralytic ileus. 3 of them died during the pancytopenic phase. The pancytopenic period ranged from 16-25 d (median 21 d) after the remission induction and 14-21 d (median 19 d) after the consolidation course. Median remission duration was 5 months for those patients who received no treatment after remission induction and greater than 9 months (4+ - 16+ months) for the patients who received consolidation courses. Increased dosages of AraC are active in relapsed leukaemia and lymphoma, although optimal dose and schedule are still undetermined. PMID- 3855572 TI - Subtle early osteosarcoma. AB - Seven cases of osteosarcoma in their very early stage of development are presented. With the exception of two cases the tumors were overlooked in the first radiographic examination. Two cases demonstrated increased density, three revealed subtle erosion or lytic destruction, and one case had no definite abnormality in plain radiographs but the computed tomography was abnormal. The value of additional radiographic modalities is outlined. The necessity of a high degree of suspicion for early diagnosis of osteosarcoma is stressed. PMID- 3855573 TI - Case report 300. Parosteal osteosarcoma arising from the proximal end of the left radius. PMID- 3855575 TI - An evaluation of sterilization procedures of diamond cutting instruments. PMID- 3855574 TI - Case of the month. Oral florid papillomatosis. PMID- 3855576 TI - [Psychogenic regression or limbic syndrome? Apropos of a case]. PMID- 3855577 TI - Interventional uroradiology. PMID- 3855578 TI - Serial Hemoccult stool screening for colorectal cancer. PMID- 3855579 TI - Cytology of argyrophilic carcinoma of the breast. AB - Aspirations of breast lesions from 57 patients were studied by evaluating Grimelius-stained smears in order to determine the cytologic features of argyrophilic carcinoma and the reliability of argyrophilia as a characteristic of malignancy. The cytologic preparations were compared with histologic material. Sixteen benign lesions, 24 carcinomas correctly diagnosed by cytology and 5 carcinomas with technically inadequate smears were argyrophil negative. Five of 12 carcinomas with equivocal cytology were argyrophilic. There was perfect to case-to-case correlation between argyrophilia seen on histologic slides and on smears. The smears of the 5 argyrophilic carcinomas and 2 of the argyrophil negative carcinomas with equivocal cytology shared features in common not seen in the other 50 smears: elongated cells with eccentric, round-to-oval nuclei and granular or opaque cytoplasm. These features can alert the pathologist to the possibility of malignancy in smears with equivocal cytology. A positive stain for argyrophilia will further increase the index of suspicion. PMID- 3855580 TI - Aspiration cytology of solitary schwannoma. AB - The aspiration cytology of two cases of solitary schwannoma is documented. The first tumor was retroperitoneal and cystic; the aspirated fluid showed single, regular, spindle-shaped cells with cigar-shaped nuclei and scanty wavy cytoplasm in addition to lymphocytes and foamy histiocytes. The second tumor was solid and peripheral; its aspiration smears revealed spindle-shaped cells with cigar-shaped nuclei present singly or in clusters showing nuclei in a palisading pattern. PMID- 3855581 TI - Pulmonary dirofilariasis diagnosed by fine needle aspiration biopsy. A case report. AB - A case of pulmonary dirofilariasis in a 62-year-old female was diagnosed by fine needle aspiration biopsy. A review of the literature revealed this to be the first reported case diagnosed by this method. The presence of bilateral lesions in this patient is an uncommon finding for this entity. PMID- 3855582 TI - Focal adenomatoid hyperplasia of salivary glands. A differential diagnostic problem in fine needle aspiration biopsy. AB - Adenomatoid hyperplasia of minor salivary glands is an idiopathic lesion usually involving the palate and mimicking a primary salivary gland neoplasm. In particular, the lesions may resemble low-grade mucoepidermoid tumors clinically and by fine needle aspiration (FNA) cytology. An illustrative case is presented, and the nature of this unusual entity is reviewed. Its importance in the differential diagnosis of FNA biopsies of minor salivary gland lesions is also discussed. PMID- 3855583 TI - Necrosis of thyroid nodules after fine needle aspiration. AB - In a series of 200 fine needle aspirations (FNA) of the thyroid, necrosis around the needle tract was histologically evident in 2 of 30 cases with surgical follow up. In one case of a differentiated thyroid carcinoma, necrosis with involution of the nodule was the dominant finding. This suggests that FNA can induce necrosis and apparent clinical regression of thyroid neoplasms. We believe, however, that a positive cytologic diagnosis coupled with a clinical suspicion of neoplasm should lead to surgical intervention, despite clinical regression following FNA. PMID- 3855584 TI - Fine needle aspiration biopsy cytology of renal oncocytoma. AB - The cytologic appearance of cells in fine needle aspiration biopsies of two cases of well-differentiated renal oncocytoma (grade 1) and one case of moderately well differentiated renal oncocytoma (grade 2) is presented. In grade 1 renal oncocytoma, the tumor cells were seen mainly singly or in small clusters; they were round or polygonal, with abundant granular and eosinophilic cytoplasm and small, regular, round, hyperchromatic nuclei. Aspirated cells from the grade 2 renal oncocytoma were seen mainly in large sheets. These cells were polygonal, with eosinophilic, granular cytoplasm and slightly irregular vesicular nuclei with prominent nucleoli. PMID- 3855585 TI - Role of percutaneous pelvic node aspiration cytology in the management of bladder carcinoma. AB - Six of the 23 patients with bladder carcinoma who underwent percutaneous pelvic node aspiration biopsy cytology for staging purposes showed positive findings from nodal chains. Pelvic lymphadenectomy revealed no false-positive or false negative cytologic results. The fine needle aspiration of opacified pelvic nodes under fluoroscopic control is of great diagnostic value, with a high accuracy in detecting nodal extension of bladder carcinoma and providing a rational basis for proper therapy. Positive aspiration results may be accepted as a basis for therapeutic decisions. Since the metastatic involvement of multiple nodes makes any therapeutic treatment as well as cystectomy completely useless, positive aspirations from more than two nodes may spare patients an unnecessary radical surgery. PMID- 3855586 TI - Ependymal cyst of the subarachnoid space. Cytologic diagnosis and developmental considerations. AB - Fluid aspirated from a subarachnoid cystic lesion that covered and compressed part of the left frontal lobe was examined cytologically and compared with histologic sections of the cyst wall. The fluid contained epithelial and histiocytelike cell populations. The epithelial cells were tall columnar, occurring singly or in clusters or sheets. Many cells were ciliated and their cytoplasm showed characteristic refractile granules. The differential diagnosis of this rare type of subarachnoid cyst and the mechanism of the development are discussed. Cytologic evaluation of the fluid of the subarachnoid cysts is potentially a more accurate method of classification of these lesions than is random biopsy of the cyst wall. It is of particular importance in cases with a history of growth, in which the progressive expansion results in attenuation of the diagnostic epithelial lining of the cyst. PMID- 3855587 TI - Granulocytic sarcoma with pleural involvement. Identification of neoplastic cells with cytochemistry. AB - Malignant cells were detected in the pleural effusion of a patient with three separate primary malignancies. These cells were judged by conventional morphologic studies to be poorly differentiated cells, but cytochemical studies showed them to be granulocytic precursor cells. The use of cytochemical or immunochemical techniques may be most practical for the cytodiagnosis of malignant cells in serous effusions. PMID- 3855588 TI - Immunocytochemical diagnosis of acute leukemia with pleural involvement. AB - Cytologic examination of the pleural effusion from a patient with acute leukemia, leukocytosis and bleeding revealed the presence of many leukemic cells, "lymphocytes" and erythrocytes. The significance of these cellular changes was investigated by simultaneous study of blood and effusion leukocytes by morphologic, cytochemical and immunochemical methods. Both the leukemic blasts and the "lymphocytes" in the effusion and the blood were found to be neoplastic and contained antigens characteristic of both myeloid cells (OKM-1) and lymphoblasts (C-ALLA, common acute lymphoblastic leukemia antigen). These results, when analyzed in the context of the clinical findings, were indicative of acute leukemia with pleural involvement. Such a clinically oriented approach may further enhance the potential of cytodiagnosis in patients with serous effusions. PMID- 3855589 TI - Primary amyloid tumor of the breast. Case report and literature review. AB - An example of localized amyloid deposition in the breast of an elderly woman is reported. Fine needle aspiration biopsy yielded clumps of amorphous material, which stained violet with the May-Grunwald-Giemsa technique. The amyloid appeared to be of the AA type on histochemical analysis. The lesion was clinically associated, probably coincidentally, with a stage II carcinoma of the cervix. The nature and classification of amyloid is briefly reviewed, and the role of fine needle aspiration cytology in its diagnosis is discussed. PMID- 3855590 TI - Coexistence of aspergillosis and squamous-cell carcinoma in the maxillary sinus proven by preoperative cytology. AB - The case of a 56-year-old female with coexisting aspergillosis and squamous-cell carcinoma in the maxillary sinus is reported. The diagnosis was established by cytologic study of washings of the sinus before and after admission and was confirmed by exploratory antrotomy. To our knowledge, this is the first case in which the coexistence of fungus and neoplasm in the paranasal sinus was established by preoperative cytologic diagnosis. PMID- 3855591 TI - Cytology of mesothelioma of the tunica vaginalis metastatic to the lung. AB - The case of a 63-year-old man with malignant mesothelioma of the tunica vaginalis testis confirmed by electron microscopy is presented. The tumor recurred in the scrotal skin and subsequently metastasized to the inguinal and retroperitoneal lymph nodes. Four and a half years after the original diagnosis, pulmonary metastases were discovered by cytologic examination of bronchial washings and confirmed by transbronchial lung biopsy. The cytologic features of the metastatic malignant mesothelial cells are described and compared to those of mesothelioma cells in body cavity fluids. The role of cytology in the early detection of such tumors is discussed. PMID- 3855592 TI - Primary malignant lymphoma of the brain in acquired immune deficiency syndrome. PMID- 3855593 TI - Cervical tuberculosis with carcinoma in situ: a cytodiagnosis. PMID- 3855594 TI - Megakaryocytes in ascitic fluid in a case of agnogenic myeloid metaplasia. PMID- 3855595 TI - Benign-appearing mesothelioma cells in a serous effusion. PMID- 3855596 TI - Blast crisis of chronic granulocytic leukemia with mast cell and basophilic precursors. AB - The authors report a patient with Ph1-positive chronic granulocytic leukemia (CGL) who developed "blast crisis" after six years of chronic phase. The presence of mast cell precursors and basophil blasts was demonstrated by ultrastructural morphology and cytochemistry. Membrane phenotype studies with monoclonal antibodies helped in the further characterization of these cells. The possible implication of these findings in the origin of mast cells and the relationship of these cells with basophils are discussed. PMID- 3855597 TI - Relationship between patients' age, bone marrow karyotype, and outcome of induction therapy in acute myelogenous leukemia. AB - Bone marrow karyotypes were performed in 88 cases of adult acute myelogenous leukemia (AML) at diagnosis and classified NN (normal), AA (abnormal), and AN (mixture of normal and abnormal metaphases). A clear relationship was found between karyotype and complete remission (CR) rate: 58% CR in (NN + AN) cases; 14% CR in AA cases (P less than .009). This relationship was even stronger when only patients under 60 years of age were studied. Considering failures of induction treatment, no relationship was found between the NN/AN/AA classification and a drug resistance. In patients over 60, the worse prognosis could be explained by an inferior ability to tolerate intensive treatment. PMID- 3855598 TI - Evidence for two isozymes of leukocyte alkaline phosphatase in leukemic leukocytes. AB - Leukocyte alkaline phosphatase (LAP) is a granulocyte enzyme whose level of expression is markedly altered in various disease states. We have characterized LAP from normal cells and leukemic cells with a high level of LAP activity in order to determine whether increased enzyme levels are caused by increased levels of the same enzyme or induction of a different alkaline phosphatase. Leukocyte alkaline phosphatase was purified from normal granulocytes and from leukemic cells of a patient with chronic granulocytic leukemia (CGL) in blast phase with an elevated LAP level. LAP was partially purified utilizing diethylaminoethyl (DEAE)-cellulose ion exchange chromatography, gel filtration, and preparative electrophoresis. The sample prepared from normal granulocytes contained a single protein with LAP activity having a molecular weight of 61,000 as determined by SDS gel electrophoresis. The sample from the CGL blast-phase cells, however, demonstrated two proteins with alkaline phosphatase activity, one with a molecular weight of 61,000 (LAPs) and one with a molecular weight of 45,000 (LAPf). Differential heat inactivation and distinct isoelectric points of the two isozymes suggest that they are different proteins. We interpret our data to suggest two closely related LAP alleles whose expression is controlled independently. This may represent either genetic heterogeneity or induction of "tumor marker" gene expression. PMID- 3855600 TI - Philadelphia-chromosome-negative chronic myelogenous leukemia with lymphoid stem cell blastic transformation. AB - A patient is described who had blastic transformation of Ph1 negative chronic myelogenous leukemia (Ph1 - CML). Characterization of the leukemic cells revealed a population with a lymphoid stem cell phenotype (cALL-, TdT+, Ia+, cIgM-). This particular phenotype may be responsible for the refractoriness to vincristine and prednisone and the rapid downhill course. PMID- 3855599 TI - Lack of relationship between in vitro cell measurements and response to busulfan in chronic myelocytic leukemia. AB - Twenty-three patients with chronic-phase CML have been treated with intermittent courses of busulfan to determine if the duration of unmaintained remission becomes progressively shorter with successive courses of therapy and to determine whether there was a relationship between cluster and colony formation, suicide index of CFUc, labeling index, percentage of cells in S-phase (as determined by cytofluorographic DNA histogram analysis), in vitro sensitivity of the CFUc to busulfan, and response to busulfan therapy. Serial studies in individual patients and the group as a whole revealed no relationship between changes in the cellular parameters described above and response to busulfan. The white blood cell (WBC) doubling time with serial courses of busulfan in individual patients did not always progressively decrease as has been previously reported. In vitro studies of CFUc in chronic-phase CML appear to be of no value in predicting response to busulfan. PMID- 3855601 TI - The effect of vaginal administration of various doses of prostaglandin E2 gel on cervical ripening and induction of labor. AB - Eighty patients with a Bishop score of less than or equal to 4 were randomly administered vaginal triacetin gel containing placebo or prostaglandin E2 in 1, 2, and 3 mg doses. Twelve to sixteen hours later, those not in labor underwent oxytocin induction. Increasing doses of prostaglandin were effective in ripening the cervix, and the higher doses were associated with significant success in inducing labor. PMID- 3855602 TI - Prostaglandin production and stimulation by angiotensin II in the isolated perfused human placental cotyledon. AB - Levels of prostaglandins E and F2 alpha, thromboxane B2, and 6-oxo-prostaglandin F1 alpha were measured by radioimmunoassay in the maternal and fetal effluents of isolated human placental cotyledons perfused in vitro. All prostaglandins measured were released in greater amounts by the maternal side than by the fetal side of the perfused cotyledon although there were no consistent concentration gradients between the two sides. The approximate rank order of prostaglandin release into the maternal side was thromboxane B2 greater than prostaglandin F2 alpha congruent to prostaglandin E congruent to 6-oxo-prostaglandin F1 alpha, and that into the fetal side was thromboxane B2 congruent to prostaglandin F2 alpha congruent to prostaglandin E congruent to 6-oxo-prostaglandin F1 alpha. Injection of angiotensin II (0.5 microgram) into the fetal circulation stimulated prostaglandin E and 6-oxo-prostaglandin F1 alpha but not thromboxane B2 and prostaglandin F2 alpha release into the fetal circulation and had no effect on maternal release. Angiotensin II (0.5 microgram) had no effect on either side of the perfused cotyledon when injected into the maternal circulation. It is proposed that prostaglandin release into both maternal and fetal circulations may be flow-dependent and that the angiotensin II-stimulated release of prostaglandin E and 6-oxo-prostaglandin F1 alpha may serve to modulate the vasoactive actions of angiotensin II on the fetal vasculature. PMID- 3855603 TI - Are CA125 and placental alkaline phosphatase the same antigen? PMID- 3855604 TI - Psychosocial implications of malocclusion: a 15-year follow-up study in 30-year old Danes. AB - Long-term psychosocial effects of malocclusion should be studied longitudinally from childhood to adulthood in orthodontically untreated populations. In 1965-66, the occurrence of morphologic traits of malocclusion was recorded in 977 Danish adolescents who had no access to organized orthodontic care. In a follow-up study 15 years later, a questionnaire was mailed to the subjects; this contained general questions about body image and specific inquiries concerning self perception and social implications of dental appearance. The response rate was 86%. Ten percent had received orthodontic treatment. In the remaining individuals, only one entry among thirteen items of body image--the teeth--was rated significantly less satisfactory by subjects with malocclusion at adolescence than by subjects without malocclusion at adolescence. The lowest ratings were observed in subjects with extreme maxillary overjet, extreme deep bite, and crowding. Highly significant differences were found between the two groups (subjects with and without malocclusion) in recalling adolescent awareness of malocclusion, dissatisfaction with the appearance of the teeth, and unfavorable appearance of the teeth compared with those of peers. Schoolmates' teasing occurred seven times more often in the presence of malocclusion. Differences were less marked in the perceptions of the same individuals in adulthood. However, in both adolescence and adulthood unfavorable perceptions of the teeth were expressed significantly more often by subjects with extreme maxillary overjet, extreme deep bite, and crowding. No association was found between malocclusion and present occupational status. It was concluded that certain malocclusions, especially conspicuous occlusal and space anomalies, may adversely affect body image and self-concept, not only at adolescence but also in adulthood. PMID- 3855605 TI - Orthognathic surgery norms for American black patients. AB - Upon analyzing the literature, it becomes apparent that the hard- and soft-tissue norms of blacks differ from those of whites. However, these established black norms are not complete when evaluating potential surgical cases. Therefore, the intent of this study was to establish black norms that will be valuable aids for diagnosis in such cases. Lateral cephalometric radiographs were taken of 50 white adults (25 male, 25 female) and 50 black North American adults (25 male, 25 female). All subjects met the following criteria: 18 to 50 years of age; a normal Class I skeletal and dental relationship without any severe anteroposterior, vertical, or transverse discrepancies; and a balanced profile. The tracings involved 24 measurements that were analyzed with a digitizer. Sexual differentiation was included within each measurement. Significant differences between white and black subjects were found in the following areas: hard tissue (SNA, ANB, mandibular length, and the Wits analysis); dental (anterior dental height [ADH], amount of tooth exposure at rest, upper incisor-palatal plane [UI PP], and lower incisor-mandibular plane [LI-MP]); and soft tissue (nasolabial angle [NLA], upper lip length [ULL], lower lip length [LLL], throat length [TL], and the lip-chin-throat angle [LCTA]). From a practical point of view, this study can be used by orthodontists and oral surgeons to aid in the diagnosis of black patients contemplating orthognathic surgery. PMID- 3855607 TI - An analysis of the variation of the ANB angle: a statistical appraisal. AB - The variation of the ANB angle was studied in a sample which consisted of 138 orthodontically untreated children 7 to 15 years of age with Class I, Class II, or Class III (Angle) malocclusion. A regression analysis was used in order to describe the proportion of the distorting variation caused by some usual changes in the cranial and facial skeleton. The results revealed that a part of the variation of the ANB angle could be attributed to factors other than the actual apical base difference, among these factors being the rotation of the S-N plane, the relative length of the S-N plane, and the rotation of the jaws. Because the ANB angle can vary without any marked abnormalities in the sagittal jaw relationship, the use of the so-called normal limits for the ANB angle is not justified. It would be better to replace the ANB angle with a more accurate indicator. PMID- 3855608 TI - Activator headgear therapy. AB - A method of treatment is described using an activator and cervical headgear simultaneously to correct malocclusions of the Class II, Division 1 type. The case reports of ten treated patients are used to demonstrate the effects of the application of this technique. Changes in the dentition and facial skeleton were analyzed and the significance of the different responses to the application of the same appliances assessed. The hypothesis proposing that a simultaneous application of both appliances may result in a number of desirable effects greater than that induced by each individual appliance is examined. The hypothetical basis for the application of this technique is partially substantiated by the clinical observations. Within a period of about 1 year, correction of the Class II molar occlusion to a Class I molar occlusion is obtained, with a simultaneous reduction of overbite and overjet. Skeletal changes were found to be variable and related to facial type and the rate of facial growth. Brachyfacial and mesofacial types responded most favorably to treatment. The most favorable effects were observed when there was a large quantitative mandibular growth and brachyfacial or mesofacial growth pattern. In dolichofacial types with a slow mandibular growth rate, mandibular rotation was found to be clockwise; cervical traction appears contraindicated, and a combination of activator with occipital medium to high pull is considered more appropriate. PMID- 3855606 TI - Recovery of the dental and periodontal tissues of the rat incisor following application of continuous intrusive loads: a long-term study. AB - The present investigation deals with the functional recovery of the rat incisor periodontium following application of optimal intrusive loads for a period of 2 weeks and addresses the relationship between function and integrity of dental and periodontal tissues. The daily rate of eruption served as an indicator of the functional capacity of the rat periodontal ligament (PDL), while the condition of the PDL was evaluated by means of serial histologic sections. The left mandibular incisors of thirteen experimental and seven control rats were shortened to prevent occlusion, and calibrated loads of 19 +/- 1.6 grams were applied to the teeth of the experimental animals. Following removal of the springs, the daily rate of eruption of all teeth was measured during a recovery period of 80 days. In all experimental animals, prolonged impairment of the eruptive potential had occurred: In 50% the rate of eruption was fully restored 8 weeks after removal of the loads, and in these animals the histologic evaluation showed an almost normal PDL. In the remaining 50% gross impediment in the eruption rate persisted throughout the entire experimental period. The intratissue forces operating during the recovery period had sufficient strength to cause a degree of periodontal injury equivalent to that ensuant on direct loading. Extensive newly developed necrotic lesions were evident in the initially stretched mesial PDL. Areas of dentin resorption, denuded cementum, and injured enamel appeared a considerable time after load removal. Periodontal injury included disorientation and loss of attachment of collagen fibers, presence of scarlike tissue, and infiltration of inflammatory cells.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3855609 TI - Interaction of aspartame and carbohydrates in an eating-disordered patient. PMID- 3855610 TI - Nicotine used as emetic by a patient with bulimia. PMID- 3855611 TI - Are eating disorders and affective disorders related? PMID- 3855612 TI - Are DSM-III criteria for bulimia too broad? PMID- 3855613 TI - Association between mediastinal germ cell tumors and hematologic malignancies. Report of two cases and review of the literature. AB - A hematologic malignancy occurred simultaneously with a malignant mediastinal germ cell tumor in two men. In one instance the blood disorder was acute nonlymphocytic leukemia, and in the other, malignant histiocytosis. We subsequently identified nine additional patients, all male (age range 12-48 years), with a mediastinal germ cell tumor and either acute nonlymphocytic leukemia or malignant histiocytosis. Six of the 11 patients had not received either radiation or chemotherapy before development of the hematologic malignancy. One patient developed malignant histiocytosis and was found to have a malignant mediastinal germ cell tumor after having received steroid therapy for a renal allograft. The four remaining patients developed acute nonlymphocytic leukemia 5-32 months after initiation of irradiation or chemotherapy for a mediastinal germ cell tumor. In four patients with acute leukemia, karyotypic analysis established the clonal nature of the leukemic process. Although the leukemia may be therapy-related in four or possibly five patients, this explanation cannot be applied to the remaining six patients. These six patients, coupled with studies of in vitro growth characteristics of teratocarcinoma cells described previously, suggest that a previously unrecognized association between malignant mediastinal germ cell tumors and hematologic malignancies may exist in humans. PMID- 3855614 TI - Noninvasive assessment by radiotelemetry of antacid effect during labor. AB - A noninvasive radiotelemetry technique was used to study the antacid effect of 15 ml of 0.3 M sodium citrate in 26 women in established labor. The subjects swallowed a pH radio pill, whose signal was detected transabdominally by a radio receiver. The median and range of values for the time to return to the preantacid basal pH for all of the women in labor was 84.0 (11.8-195.8) min. However, there was a significant difference (P less than 0.05) in the duration of action of sodium citrate between the women who had received no analgesia and those given intramuscular meperidine. The median and range of values for the time to return to the preantacid basal pH in patients who had received meperidine during labor was 166.0 (147.7-195.8) min, whilst in those who had received no analgesia the values were 56.7 (11.8-143.0) min. There were no significant differences between patients given no analgesia and those given extradural analgesia. Pretreatment with intravaginal prostaglandins (PGE2) did not influence antacid effect. PMID- 3855615 TI - [Tumor markers of pancreatic cancer]. AB - To determine the clinical usefulness for diagnosis and monitoring of pancreatic tumor markers, serum levels of CA 19-9 (RIA; less than or equal to 37U/ml), POA (EIA; less than 11 U/ml), CEA (EIA; less than or equal to 4.4 ng/ml) and TPA (RIA; less than or equal to 110 U/ml) were measured in 57 patients with pancreatic cancer and 25 patients with benign diseases of the pancreas. Frequencies of elevation for pancreatic cancers were 73.9% for CA 19-9, 69.2% for POA, 48.9% for CEA and 73.2% for TPA. Furthermore, the frequencies of elevation at relatively early stages of pancreatic cancer were not high. It was therefore thought that these markers were unsuitable for early diagnosis of pancreatic cancers. Although serum levels of CA 19-9 and POA in cases of pancreatic cancer were distributed up to on extremely high level, those for benign diseases of the pancreas were located up to twice the values of the cut-off levels. Therefore, these two markers seem promising for differentiating preoperatively between pancreatic cancer and benign diseases of the pancreas. CA 19-9 and POA were also useful for monitoring the recurrence of pancreatic cancer. In particular, patients with high preoperative levels seem good candidates for postoperative monitoring. PMID- 3855616 TI - [Complete remission obtained in refractory acute lymphocytic leukemia using high dose cytosine arabinoside combined with low-dose L-asparaginase]. AB - A 41-year-old male was diagnosed as acute lymphocytic leukemia (ALL) in November, 1982 and partial remission was obtained by a combination chemotherapy of LVP, DVP ABOP and VAMP. In January, 1983, peripheral blood showed an increasing number of leukemic cells and he was readmitted to our hospital. WBC count in the peripheral blood was 13,200/mm3 and an 82% ratio of leukemic cells was observed. Bone marrow aspiration showed a hypercellularity of 89.4% leukemic cells. High-dose Ara-C therapy was started at a dose of 3 g/m2 i.v. every 12 hours for 6 days. Leukemic cells in peripheral blood were rapidly decreased in number, and the nucleated cell count of bone marrow was also reduced after 3 weeks of treatment, however 95% of leukemic cells remained. Low-dose L-asparaginase was then supplemented at a dose of 2000 U for 3 days, and 2 months later complete remission was achieved. The side effects associated with this high-dose Ara-C therapy were nausea, vomiting, diarrhea, fever and conjunctivitis, although these were tolerable. These observations suggest that high-dose Ara-C combined with L-asparaginase should be added to the treatment of leukemia which is refractory to conventional chemotherapy. PMID- 3855617 TI - Diarrhoea due to Cryptosporidium in acute lymphoblastic leukemia. AB - We describe a case of recurring cryptosporidiosis during immunosuppressive treatment. The infection occurred after contact with an affected kitten and followed a less severe course than expected. After withdrawal of immunosuppressive treatment the infection resolved. PMID- 3855618 TI - HLA antigens and seronegative rheumatoid arthritis. AB - HLA antigens and clinical features in a series of 46 Caucasian patients (40 females, 6 males) and definite repeatedly seronegative rheumatoid arthritis (RA) of more than two years' duration (mean 11.6 years) were compared with those in 77 seropositive RA patients and 110 controls of the same ethnic and geographic origin. Seronegative RA appeared to be less often erosive than seropositive RA, and seronegative patients had fewer extra-articular features. The frequency of the HLA antigen DR1 was raised in seronegative patients as compared with controls (p = 0.006, relative risk = 3) and with seropositive patients (p less than 0.05). HLA-DR4 was slightly increased in seronegative patients compared with controls (p less than 0.05) but was clearly less so than in seropositive patients (p less than 0.005). Early onset of disease was very significantly associated with HLA DR1 in seronegative patients (p = 0.007), whereas HLA-DR4 was present more frequently in seropositive patients with onset prior to age 35 (p less than 0.05). No correlation between HLA antigens and intolerance to drugs was found in seronegative patients, whereas in seropositive patients side effects to gold salts were associated with DR3. These results suggest that seropositive and seronegative RA have distinct HLA-DR associations, especially in disease of early onset, in addition to well established clinical differences. PMID- 3855619 TI - A single step procedure for purification of estradiol 17 beta-dehydrogenase from human placenta. AB - A new and simple procedure for purification to homogeneity of the soluble estradiol 17 beta-dehydrogenase [E C.1.1.1.62] from human placenta has been developed. The purification is achieved in a single step by affinity-absorption of Cibachrome Blue F3G-A coupled to Sepharose and selective elution with NADP+. Homogeneous estradiol 17 beta-dehydrogenase has a specific activity of 7.2 units/mg. and has been purified 2400-fold with a 93% recovery. PMID- 3855620 TI - Cells of a human monocytic leukemia cell line (THP-1) synthesize and secrete apolipoprotein E and lipoprotein lipase. AB - A human cell line established from a patient of an acute monocytic leukemia (THP 1) retained an ability to synthesize and secrete plasma apolipoprotein E like protein. The protein was identified with monospecific antibody raised against human plasma apolipoprotein E. The cells also secreted lipoprotein lipase (EC 3.1.1.34). The enzyme was characterized as lipoprotein lipase on the basis of the requirement of apolipoprotein C-II as an activator and the inhibition of its activity by sodium chloride. The secretion of both apolipoprotein E and lipoprotein lipase was markedly enhanced in the process of differentiation into macrophage-like cells by the addition of 4 beta-phorbol 12 beta-myristate 13 alpha-acetate. PMID- 3855621 TI - Effects of (1,6-di(O-carbamoyl)cyclohexanone oxime)hexane (RHC 80267) on prostaglandin biosynthesis and accumulation of diacylglycerol and arachidonic acid in rabbit iris. AB - The effects of RHC 80267, (1-6-di(O-carbamoyl)cyclohexanone oxime)hexane, a diacylglycerol (DG) lipase inhibitor, on the DG lipase pathway and on arachidonic acid (AA) metabolism were investigated in the iris muscle. Incubation of the iris for 30 min at 37 degrees resulted in a loss of AA from phosphatidylinositol, phosphatidylcholine, and phosphatidylethanolamine of 40, 25, and 32% respectively. It was found that the drug inhibited the activity of DG lipase in the iris microsomal fraction and it increased the accumulation of DG, AA and other glycerolipids in iris muscle prelabeled with [14C]AA, presumably by inhibiting this enzyme. Under the same experimental conditions, the drug increased the accumulation of DG and AA in the tissue in a dose- and time dependent manner, and it inhibited the synthesis of prostaglandin E2 (PGE2) and PGF2 alpha by iris and iris microsomes in a dose-dependent manner. The data presented indicate that RHC 80267 has nonspecific effects on glycerolipid and AA metabolism in this tissue. We conclude that, while the drug does inhibit DG lipase in the intact iris, the present findings that it increased the accumulation of glycerolipids and AA and that it inhibited the biosynthesis of PGs in this tissue throw some doubt on its use in studies on the mechanism of AA release from membrane phosphoinositides for PG synthesis. PMID- 3855622 TI - [Campylobacter fetus enteritis]. PMID- 3855623 TI - [Juvenile delinquency 16 years before the 21st century]. PMID- 3855624 TI - [Evoked potentials in boxers before and after a fight]. PMID- 3855625 TI - Caffeine. PMID- 3855626 TI - A comparative evaluation of dental aspirator cleansing and disinfectant solutions. PMID- 3855628 TI - An unusual sequel to the retention of symptomless unerupted maxillary canines. PMID- 3855627 TI - Gustatory sweating following submandibular salivary gland removal. PMID- 3855629 TI - Cardiac dysrhythmias during dental surgery: a comparison of halothane and enflurane in children. PMID- 3855630 TI - Sarcoid with oral involvement. PMID- 3855631 TI - 'Teeth need gums'. Periodontal health: the profession's responsibility. PMID- 3855632 TI - Senior registrar posts in oral surgery in England and Wales. PMID- 3855633 TI - Tobacco teabags. PMID- 3855634 TI - Adverse response to endodontic material containing paraformaldehyde. PMID- 3855635 TI - Fluoride syndrome. PMID- 3855636 TI - Fluoridation in Anglesey 1983: a clinical study of dental caries. PMID- 3855637 TI - Hairy dentures: a monosymptomatic hypochondriacal psychosis. PMID- 3855638 TI - Dental caries and periodontal health following a professionally administered plaque control programme in adolescents. PMID- 3855639 TI - Temporomandibular joint dysfunction: a case of hysterical trismus. PMID- 3855640 TI - Hypodontia, ectodermal dysplasia and sweat pore count. PMID- 3855641 TI - MGDS: attitudes of practitioners on postgraduate courses in England. PMID- 3855642 TI - Operation check-up--what's going on? PMID- 3855643 TI - HLA and nasopharyngeal carcinoma in Malays. AB - HLA associations were observed in unrelated Malay patients with nasopharyngeal carcinoma (NPC). HLA-B18 was observed in 18/45 (40%) Malay NPC patients compared to 22/167 (13%) Malay normals (P = 0.0001; Pc = 0.0027, RR = 4.4). The frequency of HLA-B17, one of the antigens associated with Chinese NPC, was also increased among Malay NPC (13/45 29%) compared to controls (18/167 11%; P = 0.003, Pc = 0.07 RR = 3.4). Similar to the findings among Chinese NPC, the frequency of B17 was higher in early onset (less than or equal to 30 years) Malay NPC resulting in a higher relative risk (RR = 5.0). PMID- 3855645 TI - The blast crisis of chronic granulocytic leukaemia: a new approach to treatment. PMID- 3855646 TI - Secondary acute myeloid leukaemia: a heterogeneous entity? PMID- 3855644 TI - Varying expression of major histocompatibility complex antigens on human renal endothelium and epithelium. AB - Pre-anastomosis wedge biopsies from 14 cadaveric donor kidneys were examined for the expression of class I (HLA-ABC) and class II (HLA-DR) antigens in renal tissue. Two monoclonal antibodies to class I antigens and four to class II antigens were used in an indirect immunoperoxidase technique. Consistent expression of both antigens was demonstrated on the surface of glomerular, peritubular capillary and venous endothelial cells. Renal arteries contained only class I antigens. Proximal tubules contained varying amounts of each antigen in their cytoplasm. Sixteen human lymphocytotoxic allo-antisera showed marked variation in their ability to detect HLA antigens on the kidney. The selection of donors for recipients of renal allografts involves the complement-dependent cytotoxicity test and the failure of some lymphocytotoxic antisera to bind to the kidney indicates that some suitable patients may be incorrectly excluded. The use of a binding assay using an immunoperoxidase technique should be included in cross-match techniques particularly for patients who have high levels of circulating cytotoxic antibodies. PMID- 3855647 TI - Expression of human c-fes onc-gene occurs at detectable levels in myeloid but not in lymphoid cell populations. AB - Total cellular RNA from a variety of myeloid and lymphoid cell populations, normal and leukaemic, was analysed for the expression of a human cellular onc gene, c-fes, by northern blot hybridization assays. The probe used was a molecularly cloned human DNA sequence homologous to the 5' terminal sequence of v fes. All the myeloid cellular populations expressed the c-fes gene. In some cell populations at an advanced stage of differentiation (circulating leucocytes from Chronic myeloid leukaemia (CML), HL60 cells induced to differentiate by retinoic acid) the level of expression was even higher than in early stages of the myeloid lineage (blast cells from AML, uninduced HL60 cells). No transcript of the c-fes gene was detected in the different lymphoid populations studied. The occurrence of an RNA complementary to the c-fes sequence appears sufficiently characteristic of a myeloid population to distinguish it from a lymphoid population, normal and leukaemic. PMID- 3855648 TI - Detection of the blastic crisis cell clone in chronic myeloid leukaemia. AB - Three patients with Ph1 positive chronic myeloid leukaemia (CML) were followed until the occurrence of blastic transformation by means of cytogenetic analysis of whole marrow or blood cells, of blast cell enriched fractions from marrow or blood and of colonies grown from these cell fractions in two culture systems. Karyotypic evolution was used to indicate the development of new clones from pre existing cell lines either as transient phenomena during the chronic phase or as the ultimate indicators of a blastic crisis (BC). The clones which were to lead to a BC were detected some months before the clinical diagnosis of the BC. At a time before overt BC had become clinically manifest, the BC clone outgrew the other ones in culture and thus also in vitro showed specific proliferative advantages over the cell lines characteristic of the chronic phase of CML. PMID- 3855649 TI - Natural killer cell activity in childhood acute lymphoblastic leukaemia in remission. AB - Fifteen children with acute lymphoblastic leukaemia (ALL) in remission receiving maintenance chemotherapy and 12 ALL patients off treatment and in remission were tested for natural killer (NK) cell activity in vitro. Compared with a control population the children with ALL receiving maintenance chemotherapy had low levels of NK cell activity. This effect was not due to a specific reduction in NK cell numbers since proportions of mononuclear cells detected by the monoclonal antibodies HNK-1 (Leu-7) and Leu-11a were normal. Furthermore NK cell activity in patients could only be partially increased by pre-incubation of effector cells with interferon (alpha IFN). These studies confirm the lack of NK cell activity in children with ALL and show that this phenomenon is directly related to functional NK cell impairment. Our study has further shown that this effect is transient since ALL patients off treatment and in remission showed normal levels and augmentation of NK cell activity. PMID- 3855650 TI - Characterization of blast cells in chronic granulocytic leukaemia in transformation, acute myelofibrosis and undifferentiated leukaemia. I. Ultrastructural morphology and cytochemistry. AB - A systematic analysis of the blast cell population was carried out on samples from 50 patients suffering from blast transformation of chronic granulocytic leukaemia (CGL) (31) and of myelofibrosis (4), acute myelofibrosis (AM) (11) and undifferentiated acute leukaemia (4). Transmission electron microscopy (TEM), used in 41 samples, included: morphology and techniques for myeloperoxidase (MPO), platelet-peroxidase (PPO) and acid phosphatase (AP). The majority of cases were also studied by light microscopy cytochemistry and with a battery of cell markers which are reported in the accompanying paper (San Miguel et al, 1985). The characterization of the type(s) of proliferating blasts was made from the integration of ultrastructural and immunological data. TEM morphology allowed the precise recognition of specific granules in basophil and mast-cell precursors and of ferritin particles in blasts of erythroid lineage; these rare cell types were not adequately characterized by other methods. The PPO reaction made possible the identification of pure megakaryoblastic proliferations in 38% of cases, including eight of the 11 with AM; megakaryoblasts were also present in nine of 12 cases with mixed blast cell types. The MPO and AP reactions were useful for the characterization of myeloblasts and monoblasts, respectively. Lymphoblasts could be distinguished from other cell types by TEM morphology and negative MPO and PPO reactions. TEM techniques were valuable for diagnosing correctly the type of blast cell in this study in which only four cases (8%) remained unclassifiable. PMID- 3855652 TI - Sequential development of distinct clonal chromosome abnormalities in a patient with preleukaemia. AB - Preleukaemia has been identified as a clonal haemopathy in which progression to acute leukaemia involves conservation of the preleukaemic karyotype in the blast cells or the development of new abnormalities superimposed on the original clone. In this report, a case of childhood preleukaemia is presented in which two cytogenetically distinct clones developed over 2 years in a dysplastic marrow that was initially karyotypically normal. One clone with 47 chromosomes (47,XY,+21), disappeared without therapy. Predominance of the cytogenetically abnormal clone, 45,XY,-12,-17,t(12;17)(p11;q11) was associated with the development of acute myelogenous leukaemia and myelofibrosis. The development of independent clonal abnormalities in the unstable preleukaemic marrow may occur more commonly than has been previously recognized. Implications of the progression of the karyotypic abnormalities are discussed. PMID- 3855651 TI - Cell lineage heterogeneity in blast crisis of chronic myeloid leukaemia. AB - Blast cells from 45 patients with chronic myeloid leukaemia in blast crisis (CML BC) were immunologically phenotyped with a panel of 26 monoclonal antibodies and studied for terminal deoxynucleotidyl transferase (TdT) content. Out of 45 blast populations, 28 showed a myeloid, 14 a lymphoid, two a mixed and one an unclassifiable marker profile. In contrast to acute myeloid leukaemia (AML), we found frequent involvement of the thrombopoietic and erythropoietic systems in myeloid CML-BC. Furthermore, the marker profile on blast cells in myeloid CML-BC was different from that seen in AML. The blast cells in lymphoid blast crises of CML displayed the same lymphoid marker profile as those in acute lymphoblastic leukaemia. In three of 16 patients who were serially tested, we observed phenotypic changes in the blast cell populations. In one patient the blasts changed from lymphoid to myeloid type while remaining TdT-positive; in another case the blasts switched from granulomonocytic TdT-negative to granulomonocytic TdT-positive. In the third patient erythroid precursor cells appeared as the disease progressed. The results indicate the capacity of blast populations in CML patients during blast crisis to differentiate along several pathways. PMID- 3855653 TI - Neutrophils with ring-shaped nuclei in myeloproliferative disease. PMID- 3855654 TI - Lactation in placental steroid sulphatase deficiency. PMID- 3855655 TI - The physical characteristics of the stabilized canine retractor. AB - The design, construction and a brief indication of the advantages of the stabilized canine retractor have already been explained (Adams, 1983). It is the purpose of the present investigation to clarify and evaluate the physical characteristics of the new form and to ascertain the precise nature and degree of the differences between it and the hitherto widely used standard form of this spring. PMID- 3855656 TI - Plaster on the table. PMID- 3855657 TI - Changes in the jaw relationships during human foetal cranio-facial growth. AB - Previous investigations into pre-natal cranio-facial growth have either been purely descriptive or have involved the use of cephalometric points, lines and angles. Neither methods have given an entirely clear picture of the changes taking place during the foetal period. The present investigation measured changes in shape, position and orientation of the jaws by using image outlines and their centroids (centres of area) in combination with the analytic method of morphanalysis. The image outlines of the foetuses were related to each other via a rectangular co-ordinate reference grid so that the exact sites where growth changes occurred could be plotted and isolated. It was found that the jaw relationships were constantly changing during the foetal period. Brain growth appeared to predominate which flattened out the cranial base and determined the definitive position of the naso-maxillary segment to which the musculature of the lower face in turn adjusted mandibular growth. The jaw relationships changed in the direction Class III to Class II mainly as a result of forward growth of the naso-maxillary segment, the mandible showing a lag followed by a catch-up regaining its original position. The two jaws exhibited different growth patterns which suggested differences in the underlying mechanisms responsible for their growth. This is almost certainly an important factor in the aetiology of malocclusion resulting from malrelationships of the basal bones and soft tissues. PMID- 3855658 TI - An unusual lateral incisor. PMID- 3855659 TI - Estradiol is responsible for reduced renal prostaglandin dehydrogenase activity in female rats. AB - The contribution of sex steroids to sex-related differences in renal prostaglandin dehydrogenase activity and urinary prostaglandin excretion was examined in 7-8-week-old male and female rats subjected to sham-operation or gonadectomy at 3 weeks of age. Rats were injected subcutaneously twice over a 6 day interval with vehicle (peanut oil, 0.5 mg/kg) or with depot forms of testosterone (10 mg/kg), estradiol (0.1 mg/kg), progesterone (5 mg/kg), or with estradiol and progesterone combined (0.1 and 5 mg/kg). After the second injection, 24-h urine samples were collected for prostaglandin measurement by radioimmunoassay; the rats were killed, and renal and pulmonary prostaglandin dehydrogenase activities were determined by radiochemical assay. Renal prostaglandin dehydrogenase activity was 10-times higher in intact male rats than in intact females. Gonadectomy increased renal prostaglandin dehydrogenase activity 4-fold in females, but had no effect in males; estradiol, alone or combined with progesterone, markedly suppressed renal prostaglandin dehydrogenase activity in both sexes, while testosterone or progesterone alone had no effect. Pulmonary prostaglandin dehydrogenase did not differ between the sexes and was unaffected by gonadectomy or sex-steroid treatment. Intact female sham-operated rats excreted 70-100% more prostaglandin E2, prostaglandin F2 alpha, and 6-keto prostaglandin F1 alpha in urine than did males; gonadectomy abolished the difference in urinary prostaglandin E2 excretion. Estradiol decreased urinary prostaglandin E2 in females but not in males; treatment with other sex steroids did not alter urinary prostaglandin excretion. PMID- 3855660 TI - Subcellular localization and properties of lipase activities in human polymorphonuclear leukocytes. AB - A fluorimetric assay for lipase activity has been optimized for measurement of the enzyme in human neutrophils. Activity was maximal at acid (4.5) and alkaline (9.5) pH, although there was also a neutral peak of activity at pH 6.5. Neutrophils were homogenised in isotonic sucrose and subjected to analytical subcellular fractionation by sucrose density gradient centrifugation. The gradient fractions were assayed for acid, neutral and alkaline lipase activity and for the principal organelle marker enzymes. Neutral lipase showed a unimodal distribution with an equilibrium density of 1.19 g . cm-3, corresponding to the distribution of particulate leucine aminopeptidase. Acid and alkaline lipase activities showed very similar distribution profiles to each other with both soluble components and a broad peak of particulate activity. The broad modal density of 1.19-1.22 g . cm-3 suggests that acid and alkaline lipase activities could be localised to more than one population of cytoplasmic granule. Fractionation experiments with neutrophils homogenised in sucrose medium containing digitonin confirmed the localisation of neutral lipase and leucine aminopeptidase to the same cytoplasmic granule, and suggested that at least part of the acid lipase activity was localised to the specific granule. No lipase activity could be attributed to the alkaline phosphatase-containing granule. Neutrophils were isolated from control subjects, patients with chronic granulocytic leukaemia and women in the third trimester of pregnancy. The specific activity of acid, neutral and alkaline lipase, and leucine aminopeptidase, in contrast to that of alkaline phosphatase, were similar in the three patient groups. PMID- 3855661 TI - Metabolism of normal and modified low-density lipoproteins by macrophage cell lines of murine and human origin. AB - Four murine macrophage-like continuous cell lines (P388D1, J774.1, RAW 264.7, and PU5-1.8) and two human cell lines displaying macrophage-monocyte characteristics (HL-60, U-937) have been examined for their ability to degrade both normal and acetylated low-density lipoproteins. All of these cell lines, except PU5-1.8, were demonstrated to have LDL receptors that were induced 2-5-fold by preincubation in lipoprotein-deficient serum. Metabolism of dextran sulfate-LDL complexes by all lines except PU5-1.8 was observed. Three cell lines, P388D1, J774.1 and RAW 264.7, while exhibiting individual differences in their metabolism of acetyl-LDL, all processed acetyl-LDL in a fashion qualitatively analogous to that by murine peritoneal macrophages and human monocytes. Cell lines PU5-1.8, U 937 and HL-60 did not bind or degrade significant quantities of acetyl-LDL. In P388D1 cells, metabolism of acetyl-LDL exhibited time and concentration dependence, was reversibly inhibited by chloroquine, blocked by fucoidan and dextran sulfate, and was calcium independent. Approximately 4 X 10(5) receptors, with an apparent Kd of 3 X 10(-8) M, were present on P388D1 cells. P388D1 cells metabolized 30% as much acetyl-LDL as murine peritoneal macrophages at 37 degrees C and bound 60% as much at 4 degrees C. Chemical measurement demonstrated a 250 fold increase in the cholesteryl ester content of P388D1 cells over 96 h. The accumulation of cholesteryl esters was reversible in the presence of HDL3 and involved continuous hydrolysis and reesterification. These lines represent a convenient resource for examining the metabolism of chemically modified lipoproteins, for isolation of cell mutants, and for isolation of specific lipoprotein receptors. PMID- 3855662 TI - Specific inhibition by prostaglandin D2 and its metabolites of lysozyme synthesis in mouse macrophage-like cell line, Mm-1. AB - The cultured mouse macrophage-like cell line Mm-1 synthesizes and secretes lysozyme continuously like normal macrophages. Culture of the cells in the presence of prostaglandin D2 for 3 days strongly inhibited their production of lysozyme activity. Prostaglandin D2 caused dose-dependent inhibition of the activity: 1 X 10(-6) M prostaglandin D2 caused about 50% inhibition. Inhibition by prostaglandin D2 was not related to cytotoxicity and was reversible. The rate of synthesis of lysozyme protein was measured by culturing Mm-1 cells with radioactive amino acids and then immunoprecipitating the protein. At the concentrations used, prostaglandin D2 inhibited the synthesis of lysozyme dose dependently, but did not suppress the synthesis of total protein. Of the various types of prostaglandin, only prostaglandin D2 inhibited the production of lysozyme in Mm-1 cells. Moreover, prostaglandin D2 did not inhibit the production of other lysosomal enzymes, such as acid proteinase, acid phosphatase and beta glucuronidase, and did not affect Fc receptors on the cell surface, adherence of cells to the culture dish or the cell morphology. These results indicate that prostaglandin D2 specifically inhibits the synthesis of lysozyme in Mm-1 cells. When Mm-1 cells were cultured for 3 days in the presence of the ethyl acetate extract from the culture medium in which Mm-1 cells had been cultured with prostaglandin D2 for 3 days, the production of lysozyme activity of Mm-1 cells was also markedly inhibited by the extract. After the incubation of prostaglandin D2 for 3 days with Mm-1 cells, less than 10% of the initial prostaglandin D2 remained and two major metabolites appeared. These results suggest that the metabolites of prostaglandin D2 were involved in the inhibitory action of prostaglandin D2 in Mm-1 cells. PMID- 3855663 TI - Sleep architecture in bulimia: a pilot study. PMID- 3855664 TI - Calcium-regulated plasma membrane rigidification during corpus luteum regression in the rat. AB - Plasma membrane fractions were prepared from ovaries of superovulated rats and examined for structural changes during luteolysis. Using fluorescence polarization, we observed a rapid rigidification in vitro of samples obtained from ovaries undergoing spontaneous or prostaglandin F2 alpha-induced regression. The rigidification, manifested by a 72% polarization increase over 50 min, is calcium and calmodulin dependent, temperature sensitive and protein mediated. This increase in polarization did not appear in fractions from nonregressing ovaries; however, addition of phospholipase A2 caused virtually identical changes in polarization results as in samples prepared from regressing ovaries. These results suggest that calcium-calmodulin-dependent phospholipase A2 plays a role in membrane deterioration during luteolysis. PMID- 3855665 TI - Studies of a familial platelet disorder. AB - At least 22 members of a large kindred have a bleeding tendency resulting from an autosomal dominant disorder of platelet production and function. Phenotypic manifestations include mild to moderate thrombocytopenia, bleeding time prolongation, and abnormal platelet aggregation. Platelet survival time is normal. The platelet disorder in this family appears to differ from known hereditary thrombocytopenic or thrombocytopathic syndromes and may represent a new genetic disease. Six family members reportedly developed hematologic neoplasms: acute monocytic leukemia nine years after treatment for congenital neuroblastoma; lymphosarcoma at age 10 years; myeloid leukemia at age 23 years; acute myelocytic leukemia at age 62 years; leukemia of unknown type at age 48 years; and lymphocytic lymphoma at age 52 years. PMID- 3855667 TI - In vitro restoration of polyclonal hematopoiesis in a chronic myelogenous leukemia after in vitro treatment with 4-hydroperoxycyclophosphamide. AB - Bone marrow cells of a 45-year-old female with Philadelphia chromosome (Ph1) positive, early-phase chronic myelogenous leukemia (CML), who was heterozygous for the glucose-6-phosphate dehydrogenase (G6PD) locus, were pretreated in vitro with 4-hydroperoxycyclophosphamide (4-HC) and tested for G6PD activity in several colony formation assays and for karyotypic abnormalities. All cells within the mixed (CFU-GEMM), the erythroid burst (BFU-E), and the granulocyte-macrophage (CFU-GM) colonies expressed type A and type B G6PD activity and a normal karyotype, whereas untreated cells expressed type A G6PD and the Ph1 chromosome. This reversal of G6PD activity type and the disappearance of the Ph1 chromosome in colonies grown from 4-HC-treated cells indicate that this cytotoxic agent spares a residual normal stem cell population in bone marrow cells of early-phase CML patients. This finding, in turn, suggests a therapeutic approach in CML based on in vitro chemotherapy of autologous bone marrow grafts. PMID- 3855666 TI - Adult acute lymphoblastic leukemia phenotypes defined by monoclonal antibodies. AB - Pretreatment peripheral blood and/or bone marrow blasts from 90 adults with acute lymphoblastic leukemia (ALL) were analyzed as part of a prospective treatment protocol study. Specimens were tested by immunofluorescence cytofluorometry for reactivity with the following monoclonal antibodies (MoAbs): BA-1 (B cell antigen); T101, OKT11 (pan-T cell antigens [T]); 3A1 (T cell antigen); MCS-2 (myeloid antigen); J5 common ALL antigen (CALLA); BA4 (Ia antigen [Ia]); BA-2 (lymphohematopoietic antigen). Four major phenotypic groups were identified: B lineage ALL (BA-1+T-) (64%), T lineage ALL (T+BA-1-MCS-2-) (13%), unclassified ALL (BA-1-MCS-2-CALLA-T-) (9%) and myeloid antigen ALL (MCS-2+CALLA-T-) (7%). An additional group of patients, miscellaneous ALL (7%), was comprised of cases with unusual marker profiles. In B lineage ALL, all cases tested were Ia+MCS-2-, and the vast majority were CALLA+ (84%). In T lineage ALL, 42% expressed CALLA or Ia positivity. In unclassified ALL, the predominant phenotype was Ia+BA-2+. In myeloid antigen ALL, two of four tested were 3A1+ and all cases evaluated were BA 1-. Patients with myeloid antigen ALL were older (median age, 66 years) than patients in the other groups. The T lineage ALL group had higher leukocyte counts (median WBCs, 183,000/microL) and an increased incidence of anterior mediastinal mass at presentation. All patients received identical induction therapy. In CALLA+B lineage ALL, 30 of 46 (65%) achieved a complete remission. While the number of patients evaluated was small, 9 of 9 CALLA-B-lineage ALL and only two of six myeloid antigen ALL cases responded with a complete remission. The data suggest that these MoAbs are useful in the characterization of adult ALL. PMID- 3855668 TI - Fluoride mouthrinsing in Cincinnati elementary schools. PMID- 3855669 TI - Recommendations in dental mercury hygiene, 1984. PMID- 3855670 TI - A political scientist's view. PMID- 3855671 TI - The physician as an entrepreneur. PMID- 3855672 TI - The physician's perspective. PMID- 3855673 TI - A health planner's perspective on for-profit medicine. PMID- 3855675 TI - The new entrepreneurialism in health care. Overview: origins and trends. PMID- 3855674 TI - The economically unattractive patient: who cares? PMID- 3855676 TI - Impact on the public hospitals. PMID- 3855677 TI - The proprietarization of voluntary hospitals. PMID- 3855678 TI - Government as regulator. PMID- 3855679 TI - A hospital administrator's view. PMID- 3855680 TI - Familial aortic aneurysms: serum concentrations of triglyceride, cholesterol, HDL cholesterol and (VLDL + LDL)-cholesterol. AB - Patients with abdominal aortic aneurysms (AAAs) have been compared with healthy controls with respect to the serum concentrations of triglyceride, cholesterol, HDL-cholesterol and (VLDL + LDL)-cholesterol. The concentrations of triglyceride and (VLDL + LDL)-cholesterol in serum were higher in the patients than in the controls, while the concentration of HDL-cholesterol in serum was lower in the patients than in the controls. There was no statistically significant difference in the serum concentration of total cholesterol between the patients and the controls. Twelve patients had first degree relatives (brothers, sisters and/or parents) with AAAs and six patients had second degree relatives (cousins or brothers and sisters of the parents) with AAAs. There was no statistically significant difference between the patients who had first degree relatives with AAAs and the patients without AAAs in the family in the serum concentrations of triglyceride, cholesterol, HDL-cholesterol and (VLDL + LDL)-cholesterol. PMID- 3855681 TI - Tourette syndrome, atypical pervasive developmental disorder and Ganser syndrome in a 15-year-old, visually impaired, mentally retarded boy. AB - This is a case report of a 15-year-old visually impaired, mentally retarded male who presents with symptoms consistent with Tourette Syndrome, a Syndrome of approximate answers (Ganser's Syndrome) and Atypical Pervasive Developmental Disorder. The authors feel that this follow-up on the case presented earlier by Parraga and Butterfield raises the possibility of a link between a number of the symptoms of adult schizophrenia, appearing in attenuated form in these two cases, and Tourette Syndrome. PMID- 3855682 TI - Thyroid dysfunction and neoplasia in children receiving neck irradiation for cancer. AB - The reported relationship of radiation exposure and thyroid carcinoma stimulated this retrospective study of 298 patients treated at St. Jude Children's Hospital with radiation therapy to the neck for childhood cancer to identify patients who developed subsequent thyroid abnormalities. This series includes 153 patients with Hodgkin's disease, 95 with acute lymphocytic leukemia, 28 with lymphoepithelioma, and 22 with miscellaneous tumors. Inclusion in the study required 5 years of disease-free survival following therapy for their original tumor, which included thyroid irradiation. Follow-up has been 100%. Most patients also received chemotherapy. Seventeen patients were found to have decreased thyroid reserve with normal levels of free triiodothyroxine (T3) or free thyroxin, (T4) and an elevated level of thyroid-stimulating hormone (TSH). In nine patients hypothyroidism developed, with decreased T3 or T4 levels and an elevated level of TSH. One hyperthyroid patient was identified. Two patients had thyroiditis, and seven had thyroid neoplasms: (carcinoma in two, adenoma in two, colloid nodule in one, and undiagnosed nodules in two). This survey has demonstrated an increased incidence of thyroid dysfunction and thyroid neoplasia when compared to the general population. The importance of long-term follow-up for thyroid disease is emphasized in patients who have received thyroid irradiation. The possible role of subclinical hypothyroidism with TSH elevation coupled with radiation damage to the thyroid gland as a model for the development of neoplastic disease is discussed. PMID- 3855683 TI - Postradiation osteogenic sarcoma of bone and soft tissues. A clinicopathologic study of 66 patients. AB - Sixty-six patients with well-documented osteogenic sarcomas arising in bones and soft tissues after exposure to x-rays, which represent approximately 5.5 percent of all osteogenic sarcomas registered since 1921 at this institution, were studied. These secondary sarcomas occurred in equal proportion in both sexes, with the sixth decade of life being the most common age. In 42 patients, the bone had been normal at the time of irradiation, whereas in 24, the radiation was directed against an osseous tumor or tumor-like lesion. The median latent period was 10.5 years in both groups, ranging from 3.5 to 33 years. The radiation varied from diagnostic quality to 1 MeV x-rays. The dose was variable, but none was less than 2000 rads. Postradiation osteogenic sarcomas most commonly arose in the bones of the pelvic and shoulder regions. Histologically, the sarcomas were mostly of the fibrous type (46%) and radiographically showed a destructive bone lesion with or without signs of radiation osteitis. The cumulative disease-free survival rate at 5 years was 17%, with a median survival estimate of 1 year. PMID- 3855684 TI - Differing determinants of prognosis following resection of pulmonary metastases from osteogenic and soft tissue sarcoma patients. AB - A study was performed to determine if prognostic factors could be used preoperatively to predict outcome following resection of metastases. Sixty-seven soft tissue sarcoma (STS) patients (median follow-up, 36 months) and 39 osteogenic sarcoma patients (OGS) (median follow-up, 29 months) underwent thoracic exploration at the first indication of pulmonary metastases, and the results for each group were reviewed. The number of metastatic nodules, disease free interval (DFI), and tumor doubling time (TDT) significantly correlated with postoperative survival for STS patients. Patients with four or fewer nodules on preoperative linear tomograms survived longer (median, 23 months) than patients with more than four nodules (median, 6 months; P less than 0.005). Patients with a DFI greater than 12 months had a longer survival (median, 30 months) than patients with a DFI less than or equal to 12 months (median, 10 months; P less than 0.005). Patients with a TDT greater than or equal to 20 days had a longer survival (median, 22 months) than patients with a TDT less than 20 days (median, 6 months; P less than 0.005). The only significant predictor of survival for OGS patients was the number of nodules on preoperative linear tomograms (less than or equal to 4, 37 months median survival; greater than 4, 10 months median survival; P less than 0.05). This was due to significant differences noted for the DFI and TDT distributions between OGS and STS patients, with most OGS patients having a short DFI (less than or equal to 12 months) and a rapid TDT (less than or equal to 20 days) whereas STS patients had a more heterogeneous distribution (P less than 0.01). Thus, the number of metastases visible on the preoperative tomogram was the best predictor of survival for both OGS and STS patients. However, the applicability of other prognostic factors could not be generalized for these two closely related groups of patients. PMID- 3855685 TI - Variant translocation t(8;21;15) in an acute myeloblastic leukemia with phenotypic differential evolution. AB - A new case of a variant form of the translocation (8;21) in an AML-M2, including in addition involvement of chromosome #15 is reported. The selection of two abnormal lines, probably resulting from two successive rearrangements of the (8;15) translocated segment, is observed. It is suggested that these rearrangements change the cellular morphology and seem to play a part similar to additional autosomal abnormalities in the course of the disease, such as those found in CML. PMID- 3855686 TI - Unusual Ph translocations in CML: four new cases. AB - Four variants of the Ph chromosome translocation in chronic myelogenous leukemia (CML) patients are described. Two had an unusual simple translocation involving chromosomes #7 and #17. In two cases, the translocation, aside from involving #9 and #22, involved a third chromosome, chromosome #6 and chromosome #11, respectively. Three cases showed also karyotypic evolution during the blastic phase of the disease: in two cases, a new reciprocal translocation was found that involved a chromosome #9 at band q34. The clinical and cytogenetic significance of these results is briefly discussed. PMID- 3855687 TI - Long arm deletion of chromosome 5 in a case of chronic myelomonocytic leukemia. AB - The 46,XY,del(5)(q31),del(12)(p11) and 46,X,-Y,del(5)(q31),del(12)(p11), +mar clones were found in the bone marrow cells of a 64-year-old Japanese man with chronic myelomonocytic leukemia (CMML). Although the 5q- anomaly has been reported to occur in various hematologic disorders, a literature survey of CMML cases revealed that the present case is the first instance of CMML with the 5q- anomaly. The possible significance of the chromosome findings is discussed. PMID- 3855688 TI - Anomalies of chromosome 1 as a possible prognostic index in childhood acute lymphoblastic leukemia. AB - Complete remission rates, remission duration, and survival were established in children with acute lymphoblastic leukemia (ALL) with chromosome #1 anomalies, and the results were compared with those in patients with normal karyotypes or other chromosomal changes. Even though the complete remission rate did not differ significantly among the three groups, remission duration and survival were significantly longer in children ALL and chromosome #1 anomalies as compared with those in the other two groups. PMID- 3855689 TI - A complex translocation in acute promyelocytic leukemia. AB - The breakpoints of a complex three-way translocation involving chromosomes X, #15, and #17 were resolved in a case of acute promyelocytic leukemia (APL). It is now apparent that similar cases of variant chromosome translocations are found in both chronic granulocytic leukemia (CGL) and APL. The morphological and clinical findings in this case emphasize the variability found in some cases of APL. PMID- 3855690 TI - Premature separation of centromeres in marrow chromosomes from an untreated patient with acute myelogenous leukemia. AB - Cytogenetic studies in an untreated patient with acute myelogenous leukemia revealed that greater than 60% of his marrow metaphases had pronounced anomalies in the centromere region. In the least affected chromosomes, the centromere appeared as a nonstaining hole, whereas in the most affected chromosomes, it appeared that the centromere segment had prematurely migrated at right angles to the telomeric portions. The population of mitoses exhibiting premature separation of the centromeres was reduced to virtually none during periods of drug induced remission. Our findings suggest that cytogenetic changes in malignant myeloid cells may be characterized by defects in centromere separation, as well as by alternations in karyotype. PMID- 3855691 TI - A case of acute lymphoblastic leukemia with severe hypodiploidy. AB - A case of acute lymphoblastic leukemia with a severe hypodiploid chromosome constitution is reported. The modal chromosome number was 36, and the karyotype of these cells was 36,X, -X, -2, -3, -5, -7, -9, -12, -13, -15, -16, -17, -20, +21, +mar,del(1) (p13.1p22.3),inv(3)(q13.3q29). In addition to a haploid set, extra copies of chromosomes #6, #10, #14, #18, and #21 were found, as in most cases with severe hypodiploid karyotypes. A second, near-triploid cell line was also observed. An examination of chromosomal heteromorphisms suggested that the severe hypodiploid clone originated either from a near-triploid cell or from a common precursor cell. PMID- 3855692 TI - Cytogenetic findings in a human malignant melanoma metastatic to the brain. AB - Cytogenetic analysis by G-banding of direct and preparations of a malignant melanoma metastatic to the brain in vitro showed a pseudodiploid modal chromosome number, including five marker chromosomes, one of which was an i(6p). These results agree with those recently reported about the preferential involvement of chromosome #6 in malignant melanoma. PMID- 3855693 TI - Translocation 2;11 and other significant chromosome changes in acute monoblastic leukemia (M5) with clonal evolution: sequential clinical and cytogenetic studies. AB - An elderly woman presented with pancytopenia resulting from acute monoblastic leukemia (AMoL) type M5a. At the time of diagnosis, the marrow metaphase studies revealed a pseudodiploid idiogram: 46,XX,t(2;11)(q37;q23),(t(7;9;10)(q22;q22;p13). At relapse, 7 months later, a clonal derivative of the initial pseudodiploid pattern was identified. Though alterations of chromosome regions 7q22 and 9q22 are frequently seen in acute nonlymphocytic leukemia (ANLL), 11q structural anomalies are even more specific for this group of leukemias, and the involvement of band 11q23 is particularly striking in AMoL. Various chromosomes may take part in translocations with chromosome #11, but the participation of chromosome #2 as in this case is apparently rare. PMID- 3855694 TI - Cell surface features associated with differentiation-induction of methylcholanthrene-transformed AKR-2B fibroblasts by N,N-dimethylformamide. AB - Methylcholanthrene-transformed AKR-2B mouse embryonal fibroblasts (AKR-MCA cells) were examined for cell surface alterations after growth in culture medium containing N,N-dimethylformamide (DMF) using the lactoperoxidase-glucose oxidase radioiodination procedure with subsequent electrophoresis. DMF has been shown to induce maturational changes in a variety of transformed cells in vitro and has been reported to produce a more normal phenotype when applied to cultured AKR-MCA cells. The electrophoretic profile of 125I-labeled surface proteins from AKR-MCA cells exhibited a prominent peak of labeled material with a molecular weight of approximately 85,000. After growth of AKR-MCA cells in medium containing DMF, the Mr 85,000 peak was substantially reduced, while there was a large increase in Mr 200,000 to 250,000 radioiodinated surface material. This cell surface labeling pattern was virtually identical to that of the nontransformed AKR-2B fibroblasts from which AKR-MCA cells were derived. The cell surface alterations observed upon exposure of AKR-MCA cells to DMF occurred as a function of time of growth in DMF and DMF concentration. Growth of AKR-MCA cells in DMF resulted in a steady increase in cell surface 125I incorporation up to the fourth day of exposure to DMF. At this time, the incorporation level was 22.9-fold greater than that for untreated AKR-MCA cells. Incorporation of radiolabel was decreased after the fifth and sixth days of AKR-MCA exposure to DMF. This trend was also manifested by AKR-2B fibroblasts grown in the presence of DMF. The data suggest that there was increased expression of the Mr 200,000 to 250,000 surface protein on both AKR 2B and AKR-MCA cells when grown in DMF. DMF also inhibited morphological transformation and the cell surface changes associated with transformation of AKR 2B cells by exogenous transforming growth factors. PMID- 3855695 TI - Differences in cell cycle kinetics during induced granulocytic versus monocytic maturation of HL-60 leukemia cells. AB - Leukemia cells (HL-60) were induced to mature towards granulocytic and monocytic phenotypes using 1.1% dimethyl sulfoxide and 5 X 10(-7) M 1-beta-D arabinofuranosylcytosine, respectively. Granulocytic maturation was accompanied by a slight decrease in cell volume and in total cell protein, but with an increase in acid phosphatase. DNA histograms showed that after 7 days there was a decrease in the number of cells with S or G2 DNA content. Autoradiography revealed that most of the cells had stopped in cycle with only 3% of the cells synthesizing DNA. The rate of synthesis for these few cells, morphologically identified as immature blast forms, was not diminished. Monocytic maturation was accompanied by an increase in cell volume and of alpha-naphthyl acetate esterase. DNA histograms showed no change over 7 days. Autoradiography revealed a large fraction of the cells to be in cycle and synthesizing DNA, but at a markedly reduced rate. Induced granulocytic and monocytic maturation are characterized by a very different perturbation of the cell DNA-division cycle. PMID- 3855696 TI - Phase I and II clinical and pharmacological study of 4-demethoxydaunorubicin (idarubicin) in adult patients with acute leukemia. AB - Fifty-two adults treated previously with either acute leukemia (43 patients) or blastic-phase chronic myelogenous leukemia (nine patients) received 4 demethoxydaunorubicin (20 to 45 mg/sq m) i.v. over 2 to 3 days. Three of the ten patients with acute lymphocytic leukemia achieved a complete remission (CR) lasting 5 to 7 weeks. Five of the 28 patients with acute nonlymphocytic leukemia achieved a CR lasting 5 to 80 weeks. All remissions were induced with one course of treatment with a median time to CR of 28 days (range, 22 to 40 days). None of the patients with blastic chronic myelogenous leukemia or secondary leukemia achieved a CR. The drug was well tolerated; mucositis (36%), nausea and vomiting (35%), and hepatic dysfunction (26%) were the most common side effects. Pharmacokinetic observations on five patients demonstrated multiphasic clearance of 4-demethoxydaunorubicin and extensive formation and prolonged retention of 4 demethoxy-13-hydroxydaunorubicin; that metabolite accumulated in plasma on repeated daily dosing. 4-Demethoxydaunorubicin has sufficient antileukemic activity in both acute lymphocytic leukemia and acute nonlymphocytic leukemia to warrant a prospective comparison, in combination regimens, against the conventional anthracyclines, daunorubicin and/or doxorubicin. PMID- 3855698 TI - Vindesine-prednisone in the treatment of blast crisis of chronic myeloid leukemia. AB - Eight patients with chronic myeloid leukemia in blast crisis were treated with a combination of vindesine and prednisone. Complete remission was achieved in three patients; partial remission was achieved in three. All six responders received maintenance treatment with hydroxyurea and 6-mercaptopurine. The median duration of survival was 9 months. Two patients had long-term survival: one survived 32 months and the other is alive after 30 months. These data suggest that vindesine prednisone polychemotherapy might improve the prognosis of blast crisis in chronic myeloid leukemia. PMID- 3855697 TI - Long-term relapse-free survival in adult acute lymphoblastic leukemia. AB - An intensive treatment program with curative intent was designed for adults with acute lymphoblastic leukemia (ALL). Forty-eight consecutive patients were treated with this protocol and 39 (81%) obtained a complete remission. Although the complete remission rate was high for patients with both null- and T-cell disease, those with null-cell leukemia had a significantly greater median duration of remission (greater than 306 weeks) than patients with T-cell disease (62 weeks). The median survival by life-table analysis for the 48 patients is projected to be greater than 310 weeks, and five patients have finished the 3-year treatment program and have been off therapy for 1-3 years without recurrence of disease. Classification of adult ALL by immune marker status is an important and easily done pretherapy maneuver that identifies subsets of patients with a significantly different prognosis when treated with the protocol described in this study. Those patients for whom leukemic cells had T-cell characteristics had a short median duration of remission. Most importantly, this treatment protocol identifies by therapeutic response a subset of adult patients with ALL whose leukemic blasts are characterized by the absence of immunological markers and who appear, in substantial proportion, to be potentially curable. PMID- 3855699 TI - Phase II study of cisplatin in advanced osteogenic sarcoma. European Organization for Research on Treatment of Cancer Soft Tissue and Bone Sarcoma Group. AB - The activity of cisplatin (CDDP) against advanced osteogenic sarcoma was evaluated in 37 of 50 patients registered by the members of the European Organization for Research on Treatment of Cancer Soft Tissue and Bone Sarcoma Group between 1979 and 1982. All patients had measurable lung metastases. Thirty one patients (84%) had received previous chemotherapy consisting mainly of high dose methotrexate, doxorubicin, and vincristine. CDDP (100 mg/m2) was given as a 24-hour continuous infusion every 3 weeks for a minimum of two cycles, with appropriate fluids and diuretics. In the absence of impairment of the renal function and/or myelosuppression, the dose could be escalated by 20%. The overall response rate was 19% (seven responses among 37 patients), with one complete remission for 51 weeks and six partial remissions from 12 to 26 weeks. The median number of courses of CDDP administered was three, ranging from two to 11. Of 143 courses administered, only 18 (12%) had to be modified because of toxicity. In 16% of the patients some transient impairment of the renal function was observed. CDDP adds to the limited number of chemotherapeutic agents with useful properties in osteogenic sarcoma, and CDDP-containing combination chemotherapy regimens should be actively investigated. PMID- 3855700 TI - Pancreatitis following cisplatin: a case report. PMID- 3855701 TI - Questions most often asked about extraoral swelling of odontogenic origin. PMID- 3855702 TI - Monocyte-mediated augmentation of human natural cell-mediated cytotoxicity. AB - Normal human monocytes can significantly and rapidly augment natural cell mediated cytotoxicity (NCMC) against K562 target cells. Approximately 50% augmentation was observed after direct mixture of monocytes with autologous null cells in the 4-hr chromium-release assay. This effect was dependent on the number of monocytes, and B cells and granulocytes were not effective. Coculture of null cells with monocytes and subsequent recovery of null cells for use as effector cells also produced significantly elevated cytolytic activity. This effect was dependent upon the number of monocytes, the length of time of coculture, and the cell donor. Augmentation of NK activity was rapid and observed after 0.5-12 hr of coculture, but suppression was observed after 36 hr; augmentation was observed with high monocyte:null cell (1:1, 1:2) ratios, and no effect was generally observed with lower ratios (1:8). At the single-cell level, the augmentation was associated with an increase in the proportion of target-binding cells which were lytically active. The augmentation of NK activity by monocytes required close cellular proximity, was mediated by a factor which was active or induced only in close proximity of the effector and producer cells, and/or was mediated by a soluble factor with a molecular weight greater than 50,000. This new demonstration that monocytes can augment as well as suppress NCMC may represent another avenue by which NK cell activity may be modulated in vivo. PMID- 3855703 TI - No longer owners, but helpers. PMID- 3855704 TI - Diabetes screening in the dental office. PMID- 3855706 TI - Uniform trends for 1985: what dental assistants are wearing. PMID- 3855705 TI - Adriamycin and cytosine arabinoside contribute equally to prediction of response in acute myelocytic leukemia with improved confidence level. AB - Samples from 15 patients with acute myeloid leukemia (AML) were studied in a colony-inhibition assay of drug sensitivity. In vitro sensitivity to both Adriamycin (Adr) (1-h incubation) and cytosine arabinoside (AraC) (24-h and continuous incubation) were determined, as were the tritiated thymidine suicide indices (SI) during the 24-h incubation with AraC. The sensitivity of the proportion of cells entering S-phase during the 24-h incubation was also evaluated. Using discriminant analysis a function was derived to separate the patients into two groups, those who failed remission induction therapy, or nonresponders (group 1), and those who entered complete remission (group 2). The only variables that contributed to prediction were the Adr (1 h) and Ara-C (24 h) results. Overall, 87% (13/15) of the patients were correctly grouped using this function, with a confidence level for nine of these 13 patients of greater than 80%. Adr and AraC results contributed equally to the prediction. PMID- 3855707 TI - Looking your best. PMID- 3855708 TI - Oral cancer. PMID- 3855709 TI - Making the most of your supplier's deals. PMID- 3855711 TI - Recall systems: bane or boon? PMID- 3855710 TI - Xerostomia in the aged. PMID- 3855712 TI - Gypsum products in the dental office laboratory. PMID- 3855713 TI - The dental assistant as marketing coordinator. PMID- 3855714 TI - Contract staffing: wave of the future? PMID- 3855715 TI - Bilingual school children participate in oral hygiene program. PMID- 3855716 TI - Helpful hints for handling the HVE tip. PMID- 3855717 TI - The interview: preparation, participation and pitfalls. PMID- 3855718 TI - Payment plan alternatives for your patients. PMID- 3855720 TI - Cardiopulmonary resuscitation. A primer for dental assistants. PMID- 3855719 TI - Using the Boley gauge: how do you measure up? PMID- 3855721 TI - Establishing an effective employee evaluation. PMID- 3855722 TI - Silicone contact lenses: a personal 13-year perspective. PMID- 3855723 TI - European approaches to contact lenses: a panel report. PMID- 3855724 TI - Sulfate and methyldopa metabolism: metabolite patterns and platelet phenol sulfotransferase activity. AB - Sulfate conjugation catalyzed by phenol sulfotransferase (PST) is the major metabolic pathway for methyldopa. Methyldopa is also O-methylated in a reaction catalyzed by catechol-O-methyltransferase (COMT). Our studies were performed to determine whether sodium sulfate alters methyldopa metabolism. Methyldopa powder, 3.5 mg/kg, was taken with and without sodium sulfate, 13.25 mg/kg, by 24 subjects in a randomized, crossover design. Compared with results obtained when only methyldopa was taken, sodium sulfate taken with methyldopa increased the proportion of drug excreted as methyldopa sulfate expressed as the percentage of all urinary metabolites (66.0% +/- 5.3% and 50.1% +/- 7.5%; means +/- SD). The percentage of free methyldopa excreted also decreased (17.1% +/- 3.7% and 27.3% +/- 5.5%). Platelet PST and red blood cell COMT activities were measured in blood samples from these subjects. When sodium sulfate was taken with methyldopa, there was a significant correlation between platelet PST activities and percentages of metabolites excreted as methyldopa sulfate (r = 0.545; P less than 0.01). This correlation was not significant when methyldopa was taken alone (r = -0.340; P greater than 0.10). There was a significant correlation between red blood cell COMT activities and the proportion of urinary metabolites excreted as 3-O-methyl alpha-methyldopa when methyldopa was taken alone (r = 0.532; P less than 0.01) but not when it was taken with sodium sulfate (r = 0.153; P greater than 0.20). Our data support the conclusion that variation in sulfate availability may be one factor responsible for individual differences in the metabolism of clinically used doses of methyldopa.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3855725 TI - Radiological work-up of primary malignant bone tumours. AB - 2 cases with primary malignant bone tumour - 1 with osteosarcoma in the distal femur and 1 with chondrosarcoma in the proximal humerus - are described in which treatment with limb-saving procedures instead of ablative surgery was possible. In connection with these two case studies a review and discussion is given about the value and limitations of different imaging studies, particularly CT, angiography and scintigraphy. PMID- 3855726 TI - Public dental programs for old-age pensioners in Norway: sociopolitical opinion among recipients. AB - In the adult Norwegian population there is substantial support for the expansion of public programs for old-age pensioners. However, the perception of old-age pensioners concerning dental services as social welfare institutions is practically unknown. The purpose of this study was to provide some tentative data on this sociopolitical tissue. As part of a field experiment on delivery of dental services for old-age pensioners in the county of Troms, the old-age pensioners of one municipality (n = 572) were asked about which strategy public authorities should adhere to when allocating dental care resources to old-age pensioners. About 40% favored equal opportunities for all, while about 50% preferred dental services based upon need. This indicates a pattern of polarization, but this was not confirmed in a multivariate analysis (R2 = 0.01), which might be interpreted as indifference to the issue on the part of a majority of the pensioners. Only one subgroup deviated significantly from the aggregate distribution: of those who were negative to the pensioner role, 68% favored need based dental services. PMID- 3855727 TI - Distributive effects of dental programs for old-age pensioners in Norway. AB - The purpose of the present paper was to study the distributive effects of different delivery models of dental services to old-age pensioners in the county of Troms in Northern Norway. The empirical basis was formed by a baseline survey at the start of a 50% demand subsidy in 1975/76, and from a delivery experiment along a "market-need" dimension which was started in 1978 and lasted for 1 yr in three research areas (Municipalities). In the control area there was no intervention beyond the 50% demand subsidy, while the two experimental areas differed with regard to improvements of the market mechanism in terms of increasing degree of collective decisions as to which treatment needs should come to treatment. The aggregate consumption of dental services was relatively unaffected by a reduction in the price of dental treatment. The improvements of the market contributed to a net gain in use rate from 16% to 23%, while moving towards the "need" end of the "market-need" dimension. By minimizing the market mechanism, the use of dental services expanded and the cost of the programs increased, but whether the inequalities diminished could not be decided empirically. PMID- 3855728 TI - Comparison of caries prevalence 7 years after discontinuation of school-based fluoride rinsing or toothbrushing in Norway. AB - The purpose of this study was to compare caries prevalence in two groups of 21-yr olds 6-7 yr after discontinuation of school-based preventive programs consisting respectively of fortnightly rinsing or brushing 3-5 times per year with NaF solutions. Stratified random samples of 125 persons were drawn from appropriate population registers. Non-response was 30%. Blind clinical and radiographic examinations were carried out and the subjects were interviewed concerning their dental health related behavior. The results revealed significantly lower mean DMFS score in the rinsing than in the brushing group (P less than 0.001). Comparisons with results of other studies suggest persistence of benefits of school-based preventive programs after discontinuation. PMID- 3855729 TI - Skeletal changes in dentists and farmers in Finland. AB - Two groups were studied: dentists and farmers from the Turku area. Radiologic examination of both groups included the spinal column, rib cage and shoulder joint. Spondylosis of the cervical spine was present in 68 (52.1%) of the dentists and 59 (19.2%) of the farmers. Lumbar spondylosis was more common among farmers than among dentists in the corresponding age group. Changes in the shoulder joint occurred significantly more often in dentists than in farmers. The findings in this study indicate that dentists appear to belong to the group doing heavy work. PMID- 3855730 TI - Variation in radiographic interpretation and restorative treatment decisions on approximal caries among dentists in Norway. AB - Of a random sample of dentists in Norway (n = 741), 83% responded to a questionnaire about their use of radiographs in and their opinions and knowledge about the diagnosis of approximal caries. There was great disparity in criteria for initiation of restorative treatment of approximal caries based on radiographic appearance. Two thirds of the dentists would do restorative treatment of lesions confined to enamel, the others would wait until lesions had reached the dentin before treatment was commenced. The criteria for restoration based on radiographic appearance was best correlated with the dentists' opinions about cavity formation. About 20% of the variation in criteria among dentists was explained by the radiographic appearance dentists associated wih the presence of a cavity. The majority of the dentists believed that approximal caries progressed faster than is indicated by progression studies. The interval between recall examinations using radiographs was not consistently shorter for dentists who decided to carry out operative caries treatment at a relatively advanced stage. PMID- 3855731 TI - DMFS(e) index for selection of clinical trial subjects. AB - The aim of this study was to develop an index for selection of those subjects able to increase the discriminatory ability of experimental clinical trials of caries prophylactic agents. The index, DMFS(e), excludes from the calculation of initial DMFS all occlusal surfaces of permanent first molars and any of those teeth extracted due to caries. Data from four clinical trials, three with placebo and one with an active control, were examined retrospectively. Subjects were initially aged 11-12 yr. The efficiency of the DMFS(e) index was compared to DMFS for selection of discriminating subgroups by the calculation of minimum sample sizes required to attain statistical significance (alpha = 0.05, beta = 0.2). For each trial, the DMFS(e) index was more efficient. Specific criteria were established for those subjects who consistently failed to contribute to the study results. Following exclusion of those subjects, considerable saving in minimum sample size was achieved, the greatest reduction occurring in the active control trial. PMID- 3855733 TI - Influence of social class and fluoridation on child dental health. AB - In this study in oral epidemiology, officially collected statistics are presented which show that, 15 yr after fluoridation commenced in Auckland, New Zealand, there was still a significant correlation between dental health of children and their social class. They also show that treatment levels have continued to decline in both fluoridated and unfluoridated areas, and are related to social class factors rather than to the presence or absence of water fluoridation. In the unfluoridated areas all the children, and in the fluoridated areas only selected children, had received regular topical fluoride treatments. In both areas the use of fluoride tooth-pastes and oral hygiene had been encouraged. When the socioeconomic variable is allowed for, child dental health appears to be better in the unfluoridated areas. PMID- 3855732 TI - Reproducibility of a clinical screening method for assessing gingival inflammation, pockets and plaque retentions. AB - The purpose of this study was to evaluate the reproducibility of the Periodontal Treatment Need System (PTNS), when plaque retentions were examined separately. A sample of 8000 persons was drawn to represent the Finnish population aged 30 yr and over. The first clinical examination (total sample) was made by a specially trained expanded-duty dental auxiliary (EDDA). During the second examination (2-6 months later), 20% of the total sample was reexamined by a dentist, and of those, every 6th patient was examined by the EDDA. Reproducibility of the PTNS was assessed as intra- and interexaminer agreement and was calculated using Cohen's kappa and weighted kappa. The intraexaminer weighted kappa values were 0.67 +/- 0.05 for the PTNS and 0.48 +/- 0.15 for plaque retentions. The interexaminer weighted kappa values between the PTNS registrations were 0.77 +/- 0.05 and 0.74 +/- 0.12 in plaque retentions when examinations were made within 1 day, and 0.53 +/- 0.05 and 0.37 +/- 0.07, respectively, when the interexaminer registrations were made with an interval of 2-6 months between them. The kappa values for intra and interexaminer reliability reflect quite high reproducibility. PMID- 3855735 TI - Partial recording of gingivitis and dental plaque in children of different ages and in young adults. AB - In epidemiologic studies, total recordings of the amount of dental plaque and the degree of gingival inflammation tend to be too time-consuming. Various partial recording methods have accordingly been suggested. However, the validity of these methods when applied to different age groups has not been investigated sufficiently. The aim of the present study was to test whether different systems for partial recording of plaque and gingivitis can take the place of a full-mouth recording in children of different ages and in young adults. Ninety children, divided into three age groups (4-6, 7-9, 14-16 yr), and 30 adults (20-22 yr) were examined. The degree of gingival inflammation was recorded using the Gingival Index and the amount of dental plaque using the Plaque Index. Two partial recording methods were tested. One of these covered the teeth suggested by Ramfjord, modified for children with a primary dentition, and the other the front segment of the maxilla. The results were compared with those from an examination of all tooth surfaces. In all age groups excellent agreement was found between the partial recording method suggested by Ramfjord and a full-mouth recording of both the gingival state and the amount of dental plaque. Examination of the maxillary front segment was less accurate and resulted in a systematic underestimate. PMID- 3855734 TI - Dental caries and blood groups in South African blacks. AB - DMFT scores were determined in series of 1) urban Black adolescents (132 boys, 143 girls) aged 16-18 yr, and 2) rural Black mothers (480) aged 20-35 yr. Each series was divided into upper and lower thirds, with respect to DMFT. No relationship was apparent between segments with good versus inferior teeth, and blood groups. PMID- 3855736 TI - Frequency and suppliers of removable dentures in Finland in 1983. AB - The frequency of removable dentures and their suppliers were surveyed in March 1983 by interviewing a sample comprising 957 persons drawn to cover the total Finnish population aged 15 yr and over. The interviews revealed that there were 328 denture wearers in this sample (34.3%). The age-standardized rates were 39.7% for denture wearers and 20.4% for those wearing full dentures in both jaws. The rates for complete edentulousness, removable partial dentures of some kind and only partial denture wearing were 21.3%, 10.3% and 6.9%, respectively. Almost all of the removable denture wearers had a denture in the maxilla (97%); 62% had one in the mandible. Dental technicians with a special degree have the right to supply full dentures direct to clients in Finland. Dentists supplied 45% and dental technicians 53% of the full dentures surveyed. The study revealed a contradiction between the legal rights of dental technicians to supply dentures direct to clients and the current practice. The choice of the supplier of a removable denture showed no significant correlation with the education and income of denture wearers. The high frequency of dentures and the misconceptions regarding the supplying of them call for improvement in oral health education. PMID- 3855737 TI - Differentiating dental satisfaction in Finns by means of discriminant analyses. AB - In March 1983 dental satisfaction was studied by interviews with a sample comprising 957 persons drawn to cover the total Finnish population aged 15 yr or over. 34% of the interviewees wore removable dentures of some kind. 78% of persons with only natural teeth and 56% of denture wearers were satisfied with their dentition (subjective estimation of dentition excellent or good). Among persons with only natural teeth the level of satisfaction differed significantly with respect to sex, age, toothbrushing frequency and the latest dental visit. Such a difference was not found among denture wearers. The time elapsed since the latest dental visit was the most important single variable in the discriminant analyses of the level of satisfaction both in the whole series and among persons with only natural teeth. Sex was the only variable in the discriminant analysis which related to satisfaction with dentition among denture wearers. The classification of dissatisfied persons, with and without removable dentures, was far from adequate. It was rarely possible to predict satisfaction with removable dentures using discriminant analysis. The results depict the complexity of the problem. More understanding is needed of the contributions of psychologic factors to patient behavior. PMID- 3855738 TI - Retained interdental papilla procedure for maintaining anterior esthetics. PMID- 3855739 TI - Microbiology and immunopathology of pulpal and periapical infections. Part II. PMID- 3855740 TI - Intra-articular meniscus dysfunction and the spectrum of TMJ problems. PMID- 3855741 TI - The sensitivity-reducing effect of brushing with a potassium nitrate-sodium monofluorophosphate dentifrice. PMID- 3855742 TI - Office management of phenytoin-induced gingival overgrowth. PMID- 3855743 TI - Torus palatinus, an exostosis of unknown etiology: review of the literature. PMID- 3855745 TI - Home care for ventilator-dependent individuals. PMID- 3855744 TI - Three cases of acquired immune deficiency syndrome (AIDS) with oral manifestations. PMID- 3855746 TI - Placental transfer of cefmenoxime in late pregnancy. AB - The broad spectrum of activity and the beta-lactamase stability of cefmenoxime provide this new cephalosporin a possible efficacy in the treatment of obstetrical infections. This study was designed to evaluate the placental transfer of cefmenoxime. The study group consisted of 21 pregnant women undergoing a cesarian section. After a single intramuscular injection of 1 g of cefmenoxime, samples of maternal blood and amniotic fluid were taken 30 min before and at delivery; the same samples as well as umbilical cord blood samples were also taken 1, 2, 3 or 4 h after the injection, in order to evaluate the kinetics of the drug. The antibiotic assay was carried out by microbiological procedure. The results of the study showed (1) a peak level of 16 micrograms/ml in maternal serum, with a slow decrease and a residual value of 3 micrograms/ml at 4 h; (2) increasing levels of the drug in cord blood, with a peak value of 4.8 micrograms/ml; (3) a progressive diffusion of cefmenoxime in amniotic fluid, reaching the highest value of 4.7 micrograms/ml at 3 h, and (4) parallel kinetics of the drug in amniotic fluid and in cord blood. On the whole, this study showed a significant placental transfer of cefmenoxime, achieving therapeutic concentrations required against microorganisms responsible for obstetrical infections. PMID- 3855747 TI - Storage in vivo of [3H]prostaglandins by rabbit blastocysts. AB - Day 6 rabbit blastocysts that had previously been incubated with 10 nM [3H]prostaglandin E2 (PGE2), [3H] PGF2 alpha, or 0.5 microCi [3H]water were surgically transferred to the uteri of day 6 pseudopregnant recipient rabbits. At 1, 3, and 20 h after transfer, blastocysts were collected from the recipient rabbits and evaluated for retention of [3H]ligands. The transferred day 6 blastocysts were able to retain a significant proportion of the initial PGs for up to 20 h in vivo. These PGs were not metabolized while they remained in the blastocysts in vivo, as assessed by HPLC. The transferred blastocysts appeared normal and viable after 20 h in vivo, since implantation sites could be detected visually. These data support our hypothesis that blastocysts can sequester PGs from their environment in vivo and retain them unmetabolized during the critical period just before implantation. PMID- 3855748 TI - The importance of quantitative Mossbauer spectroscopy of MoFe-protein from Azotobacter vinelandii. AB - The Mossbauer spectra of MoFe-protein of Azotobacter vinelandii, as isolated under dithionite and taken at temperatures from 125 K to 175 K, are the sums of four resolved quadrupole doublets. Our results indicate that the currently accepted interpretation of these doublets can be questioned. Our data reduction method converts the Mossbauer transmission spectra to source lineshape deconvolved absorption spectra linear in iron. We used these absorption spectra to determine the stoichiometry of the Fe clusters in MoFe-protein and we obtained much better fits if we assumed that there are four iron atoms in the 'Fe2+, doublet, two iron atoms in the 'S' doublet, twelve iron atoms in the 'D' doublet and sixteen iron atoms in the 'M' doublet. Therefore we propose that the MoFe cofactor contains one molybdenum and eight iron atoms ('M'). We also argue that none of the previous Mossbauer spectroscopic studies have been performed on the highest-activity preparation now obtainable, nor has there been any study to prove that the Mossbauer spectra are independent of activity. We consider that the Mossbauer spectroscopic studies of the MoFe-protein of nitrogenase are a re opened and unsolved problem. PMID- 3855749 TI - The catalytic activity of nitrogenase in intact Azotobacter vinelandii cells. AB - The influence of the growth conditions on the concentration of nitrogenase and on the nitrogenase activity, was studied in intact Azotobacter vinelandii cells. It was observed that whole cell nitrogenase activity could be enhanced in two ways. An increase of the growth rate of cells was accompanied by an increase in whole cell nitrogenase activity and by an increase in the concentration of nitrogenase in the cells. The molar ratio of Fe protein:MoFe protein was 1.47 +/- 0.17 and independent of the growth rate. Activity measurements in cell extracts showed that the catalytic activity of the nitrogenase proteins was independent of the growth rate of cells. The second way to increase whole cell nitrogenase activity was to expose cells to excess oxygen. Whole cells were exposed for 2.5 h to an enhanced oxygen-input rate. After this incubation nitrogenase activity was increased without an increase in protein concentration. It is calculated that the catalytic activity of the Fe protein in these cells was 6200 nmol C2H4 formed X min-1 X (mg Fe protein)-1. With these cells and with cells grown at a high growth rate, 50% of the whole cell activity is lost by preparing a cell-free extract. It will be demonstrated that this inactivation is partly caused by the activity measurements in vitro. When dithionite was replaced by flavodoxin as electron donor, a maximal catalytic activity of 4500 nmol C2H4 formed X min-1 X (mg Fe protein)-1 was measured in vitro for the Fe protein. The results are discussed in relation to the present model for nitrogenase catalysis. PMID- 3855750 TI - Presence of hormonogenic and repetitive domains in the first 930 amino acids of bovine thyroglobulin as deduced from the cDNA sequence. AB - The sequence of the first 2831 nucleotides of bovine thyroglobulin mRNA has been determined from the analysis of a cDNA clone. Following a 41-nucleotide 5' untranslated sequence, a single open-reading frame encoding 930 amino acids was observed. This corresponds to the aminoterminal third of thyroglobulin, preceded by a putative signal peptide of 19 amino acids. The protein sequence was found to be essentially made of the sevenfold repetition of a 60-amino-acid-long building unit, interrupted at fixed positions by unrelated segments of variable length. The presence of an internal homology within the repetitive unit itself suggests that the 5' region of the thyroglobulin gene has evolved from the initial duplication of a relatively short sequence, followed by the serial duplication of the resulting unit. The tyrosine residue at position five has been assigned an important hormonogenic function [Mercken, L., Simons, M.-J. and Vassart, G. (1982) FEBS Lett. 149, 285-287]. This residue is flanked by sequence elements related to the repeated unit, suggesting that the hormonogenic domain evolved also from the basic ancestor sequence. PMID- 3855751 TI - Phase I-II evaluation of carminomycin in adults with acute leukemia. AB - Twenty courses of carminomycin were administered to 18 evaluable adult patients with acute leukemia (14 ANLL, 2 ALL, 2 CGL-BC). All but one received daily doses of 6-14 mg/m2 for 5 consecutive days. Two patients older than 60 yr had not prior chemotherapy and the others had refractory or relapsed disease. The median age was 60 yr. Three ANLL patients achieved complete remission for 8, 9 and 9 months respectively, with no maintenance therapy. None of these had proven clinical resistance to daunomycin and/or doxorubicin. Mucositis was dose-related and dose limiting. Nausea and vomiting were rare. Alopecia was constant. Cardiac arrythmia was ascribed to carminomycin in two patients. One episode of cardiac failure seemed clearly drug-related and recovered with symptomatic treatment. In conclusion, encouraging antileukemic activity was observed with carminomycin in poor-risk patients. At doses up to 12 mg/m2 day X 5, extramedullary toxicity remained acceptable. PMID- 3855752 TI - Transcatheter infusion of 99mTc MAA for predicting response of intra-arterial chemotherapy in osteogenic sarcoma. AB - Ten patients with histologically proven osteogenic sarcoma received multiple courses of intra-arterial chemotherapy. Patients received 2-3 mCi 99mTc macroaggregated albumin (MAA) infused through indwelling arterial catheters prior to, during and after the chemotherapy, and static images of tumor beds and lungs were taken and compared with contrast angiographic findings. Of the 31 studies to evaluate tumor vascularity, 26 agreed and five showed discrepancies. In general, decreased tumor vascularity, as represented by reduced MAA uptake by the tumor, corresponded to decreased tumor size and to increased tumor calcification seen on radiographs. Twenty-six of the 31 lung-imaging studies also revealed agreement between decreasing tumor vascularity, based on decreasing MAA tumor uptake, and decreasing lung uptake of the radioactivity. Decreased lung uptake of the activity on the last follow-up study in eight patients corresponded to reduced tumor involvement and improved patient performance status. PMID- 3855753 TI - The cell specificity and biosynthesis of mouse glycophorins studied with monoclonal antibodies. AB - Murine erythropoiesis represents a favourable system in which to investigate the coordinate regulation of gene expression due to the availability of erythroid precursor cells at various stages of differentiation. In this report, we investigate the biosynthesis and cell specificity of two characteristic murine RBC membrane glycoproteins that resemble the human RBC glycophorins: a major component of apparent molecular mass 31 kD (glycophorin MA) and a minor 46 kD component (glycophorin MB). Both glycophorins bind to wheat germ lectin and share a common protein antigenic determinant recognised by a monoclonal antibody (GP 29.4), but they differ significantly in their carbohydrate components: whilst both glycophorins contain mainly O-linked sugars, glycophorin MA contains in addition at least one N-linked carbohydrate residue and terminal sialic acid residues. Pulse-chase in vivo labelling experiments combined with in vitro translations of glycophorin mRNAs show that the initial precursor to glycophorin MA is a 24.5 kD polypeptide which is subsequently processed and glycosylated to give the mature 31 kD molecule via a 21.5 kD polypeptide intermediate. Both glycophorins MA and MB are synthesized most actively in early to mid erythroblasts (e.g., Friend cells induced for 3 days with DMSO) but their synthesis is considerably reduced by the reticulocyte stage. However, of the other cell types tested (neuroblastoma, myeloma, fibroblasts, epithelial cells and T-lymphoma cells), none synthesizes glycophorin with the possible exception of a low level in thymus tissue. Thus murine glycophorins, in contrast to the RBC cytoskeletal proteins (spectrin, ankyrin, band 4.1) seem to be restricted to the erythroid cell lineage like human glycophorin. PMID- 3855754 TI - Cell cycle effects of an autologous growth promoter from human leukemia cells. AB - The mechanism of action of an autologous growth promoter, produced by HL-60 cells grown in serum-free defined medium, was investigated. Determinations of cell cycle phase distribution, which showed an approx. 16% increase in S and G2M with a reciprocal decrease in G1 cells, indicated a mechanism causing decreased time in G1, resulting in a more rapid entry of cells into G2M. Adsorption of the culture supernatant with HL-60 cells resulted in a decreased promoter activity, suggesting an autologous receptor mechanism for the promoter. PMID- 3855755 TI - Marker analysis of cloned populations of human monocytes. AB - The presence of myelomonocytic progenitor cells in human peripheral blood was used for the analysis of cloned populations of human monocytes. Colonies of granulocytes and macrophages were obtained by plating peripheral blood mononuclear cells (PBM) in methylcellulose containing medium in the presence of medium conditioned by nonstimulated PBM (CM). Following 20-25 days of incubation, most colonies were found to consist of cells with monocyte-macrophage morphology. Cloned populations of monocytes were tested for several monocyte membrane markers and compared to noncloned adherent monocytes. HLA-DR, 63D3, LeuM2 antigens and Fc receptors were expressed on cells from individual colonies in similar proportions to their expression on noncloned monocytes. Some colonies were uniform in their negative expression of the 63D3 antigen, as were the noncloned monocytes. Although the clonality of cells tested was not directly proven, these results indicated that at least for some monocyte markers, heterogeneous expression was obtained in monoclonal populations of monocytes. It is possible, however, that testing of additional markers and functions may reveal homogeneous clones of monocytes and suggest the existence of stable subsets. PMID- 3855757 TI - Maxillary and mandibular anterior repositioning splints (ARS). PMID- 3855756 TI - HEL and K562 cells: analysis of proteins by two-dimensional gel electrophoresis and comparison to erythroid and nonerythroid cells. AB - We have examined the total protein composition of the erythroleukemia cell lines K562 and HEL using high-resolution two-dimensional gel electrophoresis and have compared them with the pattern obtained by normal erythroid and nonerythroid cells. The proteins from the two cell lines, K562 and HEL, gave two-dimensional patterns that were similar to each other and to that of normal lymphocytes or leukemic cell lines. In contrast, normal erythroid precursor cells (BFUe-derived normoblasts) and erythrocytes have a protein profile that is characteristic and significantly different from that of normal lymphocytes or the leukemic cell lines examined. These data suggest a common protein profile in hemopoietic cells at early stages of differentiation (K562, HEL, or other leukemic lines) and in normal lymphocytes. Erythroid cells, in contrast to lymphoid cells, appear to diverge significantly from this common protein profile when differentiation proceeds to the level of morphologically recognizable erythroid cells. Induction of K562 and HEL cells by hemin produces changes in the abundance of several proteins, but fails to change the overall protein profile of the two cell lines. PMID- 3855758 TI - Correction of anterior disc displacement. PMID- 3855759 TI - Temporomandibular joint meniscus repair surgery: a follow-up study. PMID- 3855760 TI - Treatment of temporomandibular disc dislocations with a function regulator II. PMID- 3855761 TI - Correction of Class II, division 2 deep bite. PMID- 3855762 TI - Ligated anterior repositioning splint. PMID- 3855763 TI - Legal aspects of terminating the dentist-patient relationship. PMID- 3855764 TI - Preventing litigation: pitfalls in practice. PMID- 3855765 TI - How sweet is it? PMID- 3855766 TI - Where some of the others stand: an update on saccharin, cyclamates, xylitol. PMID- 3855767 TI - Marketable resumes and cover letters. PMID- 3855769 TI - Marketing American Dental Association-accredited dental assisting education part II. PMID- 3855768 TI - Interviewing strategies: selling yourself. PMID- 3855770 TI - Results of 1984 ADAA salary survey. PMID- 3855771 TI - Special services: practice building the professional way. PMID- 3855773 TI - Total marketing: the best way to build your practice. PMID- 3855772 TI - Disability insurance: find the plan that fits your needs. PMID- 3855774 TI - Meeting the media: how to project a professional image. PMID- 3855775 TI - A guide to the new restorative systems. A DM product guide. Part I. PMID- 3855776 TI - Dental fees: national and regional survey. PMID- 3855777 TI - What's the future for PCs? PMID- 3855778 TI - Ways to turn bratty kids into dental cherubs. PMID- 3855779 TI - The best way to answer dental insurance companies's queries. PMID- 3855780 TI - Drugs in dentistry. Antibiotics. PMID- 3855781 TI - Fee-for-service: what's the key to survival? PMID- 3855782 TI - Ways to win case acceptance. PMID- 3855783 TI - The selection, care, and feeding of the modern lab computer. PMID- 3855784 TI - Doctor, your account is 60 days past due! PMID- 3855785 TI - Topical fluorides: how much are you using? PMID- 3855786 TI - Early detection of child maltreatment. PMID- 3855787 TI - Juvenile periodontitis (periodontosis) and inheritance patterns. PMID- 3855788 TI - Professionalism through the process of career mobility. A historical perspective in California dentistry. PMID- 3855789 TI - Oral screening and the dental hygienist in a statewide Health Fair. PMID- 3855790 TI - The dental hygiene entry dilemma. An issue of prestige, image and professional credibility. PMID- 3855791 TI - Who are we? An update based on 1984 data. PMID- 3855792 TI - The 10 biggest mistakes young dentists make. You can avoid them. PMID- 3855793 TI - Increase those profits through stock management. PMID- 3855794 TI - Establish a game plan for your office team. PMID- 3855795 TI - Dental philately--it's more than a hobby. PMID- 3855796 TI - It pays to keep that financial data handy. PMID- 3855797 TI - Soothe your practice qualms with a postdoctoral residency. PMID- 3855798 TI - Enhance your image and your patient flow with marketing. PMID- 3855799 TI - The Dos and Don'ts when building your marketing plan. PMID- 3855800 TI - Plug in the formula that answers buying questions. PMID- 3855802 TI - How you can sidestep the malpractice trap. PMID- 3855801 TI - Financial information you need at your fingertips. PMID- 3855803 TI - Recall systems can make or break your practice. PMID- 3855804 TI - Retail store dentistry: another practice choice. PMID- 3855805 TI - Minimize those risks when buying a practice. PMID- 3855806 TI - "Charge it'. Words your practice can thrive by. PMID- 3855807 TI - Eliminate the guesswork of buying inventory. PMID- 3855808 TI - Beware of the hazards in your dental office. PMID- 3855809 TI - Low-cost research sources that work. PMID- 3855810 TI - Stimulate your staff with motivational techniques. PMID- 3855811 TI - Phone etiquette: your key to good patient relations. PMID- 3855812 TI - Taking licensing exams: practice makes perfect. PMID- 3855813 TI - Peer review: a dental examiner's nightmare. PMID- 3855814 TI - Dental students have the "right stuff". PMID- 3855815 TI - Symposium on semiprecision attachments in removable partial dentures. PMID- 3855816 TI - An overview of dental marketing. PMID- 3855817 TI - Plan your year in advance. PMID- 3855818 TI - 1984 Tax Reform Act plugged tax loopholes. PMID- 3855819 TI - Shedding light on malpractice. PMID- 3855820 TI - How the law affects your office records. PMID- 3855821 TI - 1984 survey looks at changes in dentists' office costs. PMID- 3855823 TI - The patient knows we care. PMID- 3855822 TI - Dental treatment coordinator. PMID- 3855824 TI - Practice sales on the increase. PMID- 3855825 TI - Using the four Ps of marketing to your advantage. PMID- 3855826 TI - Management of pain associated with temporomandibular disorders. PMID- 3855827 TI - Anterior restorative materials: a technique update. PMID- 3855828 TI - Anterior tooth alignment with fixed and removable appliances. PMID- 3855829 TI - A look at toothpaste ingredients. PMID- 3855830 TI - Treatment of dental phobia with hypnotherapy. PMID- 3855831 TI - A maxillary growth. PMID- 3855832 TI - Oral white patch. PMID- 3855833 TI - The eruption guidance myofunctional appliance: case selection, timing, motivation, indications and contraindications in its use. PMID- 3855834 TI - Dental photography. PMID- 3855835 TI - JCAH survey postponement granted under procedures. PMID- 3855836 TI - The JCAH and the autopsy. PMID- 3855837 TI - Two subtypes of BfF by isoelectrofocusing: differential linkage to other HLA markers. AB - By isoelectrofocusing in agarose, the properdin factor allotype BfF could be split into two subtypes: BfFa with one major cathodic band and BfFb with the same cathodic band but in addition a major anodic band. By scanning, BfFaFb heterozygotes were distinguished from BfFbFb homozygotes by the stronger intensity of the anodic band in the latter. The two subtypes were segregated perfectly with HLA in 40 families and showed different association patterns with HLA markers. BfFa seemed to be linked to B35 while BfFb showed a strong linkage with all the components of the following haplotype: HLA-A29, Cw-, B44, BfFb, C4A3B1, DR7. The frequency of BfFa among BfFS heterozygotes was 41% (46/113) and that of BfFb 59% (67/113). PMID- 3855838 TI - Association between a genetic trait and a marker: discrimination between epistasis and gametic disequilibrium. AB - We reconsider the method of Ott and Falk (1982) for the analysis of genetic linkage and of epistasis in the presence of phenotypic association. Their approach is extended to allow for gametic disequilibrium between marker and trait loci. We show that epistasis and tight linkage with gametic disequilibrium may be indistinguishable as explanations of association even in a very large pedigree. PMID- 3855839 TI - Clotting factors VII and X as useful markers of terminal deletion of chromosome 13. PMID- 3855840 TI - Market strategy--market analysis. PMID- 3855841 TI - The U.S. Presidents teeth--how good were they? PMID- 3855842 TI - Are you practicing legally? PMID- 3855843 TI - Preliminary report on effects of prostaglandin E2 on brain edema in fulminant hepatic failure rats. PMID- 3855844 TI - Transfection by human oncogenes: concomitant induction of tumorigenicity and tumor-associated membrane alterations. AB - NIH 3T3 cells were transfected with DNA derived from human bladder carcinoma, colon carcinoma and HL60 promyelocytic leukemia cells. The transfectants were examined for the presence of human oncogenes in relation to tumorigenic potential and composition of surface-located fucosyl glycopeptides by gel filtration, Concanavalin-A-binding and high-performance liquid chromatography. All transfectants, harboring 3 different human cellular ras genes, appeared to be tumorigenic in nude mice and displayed characteristically altered glycopeptides. The surface glycopeptides were consistently changed to higher apparent molecular weight due to enrichment in higher-branched sialic-acid-containing glycopeptides. Similar alterations have been found previously in virally- and chemically transformed cells in vitro and tumors raised in vivo, and were designated as cancer-related or tumor-associated glycopeptides. Revertants derived from HL60 DNA-induced transfectants, which had lost the transfected human N-ras oncogene, simultaneously lost their tumorigenic potential and expression of cancer-related membrane glycopeptides. In addition, spontaneous transformants, exhibiting morphology and growth patterns indistinguishable from those of tumor-DNA-induced transfectants, neither contained transferred human DNA sequences nor expressed cancer-related glycopeptides. Nevertheless these cells were capable, after prolonged latency periods, of inducing tumors in nude mice. Cells derived from such tumors constantly displayed cancer-related glycopeptides on their surface, suggesting selection of tumorigenic cells from spontaneous transformants during passage in nude mice. In one of these tumors at least, an endogenous mouse ras gene appeared to be activated. The results indicate a close correlation between the presence of activated ras-oncogenes in the genome of the transfected cells, the tumorigenic potential of these cells and the expression of surface-located cancer-related glycopeptides. The data suggest that functions provided by human ras-oncogenes contribute to the alteration of membrane glycopeptides on tumor cells. PMID- 3855845 TI - Natural killer cell resistance in K-562 cell sublines. AB - Sublines of the hematopoietic stem cell line K-562 were tested for their susceptibility to human natural killer (NK) cell activity. A correlation was found between the degree of NK-mediated lysis and the presence or absence of particular chromosomal markers. K-562 subline susceptible to lysis by NK were found to express karyotypically a deletion 9- and a marker 8(t1-18), whereas resistant sublines did not express these markers. A cloned K-562 subline B1V was chosen as representative of a resistant subline. This subline was resistant to lysis even after prolonged incubation and activation of the NK cells with interferon. However, it was found that B1V was lysed by both antibody-dependent, complement-mediated and antibody-dependent cellular mechanisms at levels comparable to those seen with NK-sensitive K-562 sublines. Subline B1V did compete poorly with NK-sensitive K-562 in cold-target inhibition; however, conjugate-formation assays demonstrated that the binding of NK cells to B1V cells is comparable to that of NK-sensitive K-562 cells. We suggest that cells of the cloned line B1V are recognized normally by NK cells but do not activate the lytic mechanism of the bound NK cell. Treatment of the resistant clone B1V with neuraminidase did not lead to enhanced levels of lysis. Protein extracts of NK sensitive K-562 sublines efficiently inhibited lysis by NK cells but extracts of the resistant clone, B1V, did not inhibit lysis, suggesting that the clone lacks cell surface determinants involved in the post-recognitive activation of the NK cytolytic mechanism. PMID- 3855846 TI - Sweet's syndrome: a presenting sign of acute myelogenous leukemia. PMID- 3855847 TI - An anti-I-A murine monoclonal antibody which cross-reacts with HLA-DR2. AB - A murine monoclonal antibody, 12.7G3, directed against an Ia antigen encoded by genes in the I-Ab subregion of the H-2 genetic complex, was found to be cytotoxic against human B lymphocytes. When tested against a random panel of normal human donors, the reactivity of 12.7G3 exhibited a correlation coefficient of 0.58-0.68 with cells expressing HLA-DR2. Antibody reactivity segregated with HLA-DR2 in two families studied. Binding of 12.7G3, as detected by immunofluorescence using flow microfluorometry, was positive for two human cell lines, GM 3161 and HFB-1, both expressing HLA-DR2, and negative for two other cell lines, GM 3104 (DR1,1) and GM 3164 (DR4,4). PMID- 3855848 TI - Influence of the oxygen pressure in the culture medium on the oxygenation of different types of multicellular spheroids. AB - Six different types of spheroids of both human and rodent origin were cultured, using the liquid-overlay technique. Oxygen gradients were measured with micro electrodes, when the spheroids were attached to thin cover-glasses. The gradients were measured from the upper surface towards the center of the spheroids. Stable and reproducible gradients were obtained. Large variations were seen in the steepness of the gradients, depending both on the type and on the size of the spheroids. An interesting phenomenon was discovered. When some types of spheroids were cultured in a medium with a low oxygen pressure (medium equilibrated with gas containing 4-5% O2), the gradients continuously changed and became flatter. Detailed studies showed that most of the changes occurred within 2 days after the transfer to the low oxygen pressure. After 2 days, no further dramatic changes took place. This phenomenon was seen in two types of human glioma (U-118 MG and U 178 MG) and two types of embryonic, hamster lung-cell (V-79-379A and CHEL) spheroids. In the cases of human-osteosarcoma (U-393 OS) and human thyroid-cancer (HTh7) spheroids, no such changes could be seen. The low oxygen tension in the culture medium was chosen to mimic the environmental conditions in solid tumors. PMID- 3855849 TI - Evidence for dynamically determined conformational states in rhodanese catalysis. AB - Physical and kinetic studies have been used to explore hysteretic effects that are observed in rhodanese catalysis at pH 5 and also at neutral pH when the ionic strength of the medium is high. Experiments that involve observation of changes in intrinsic protein fluorescence of the enzyme and kinetic investigation of its interactions with product thiocyanate anion at pH 5 have implicated enzyme isomerization as the cause of hysteresis. Taken all together, the data indicate that the conformations of enzyme forms in the catalytic cycle are dynamically determined, depending on the relative rates of conformational relaxation and catalysis as influenced by the concentrations of substrates and products. PMID- 3855851 TI - Partial purification and characterization of a nerve growth factor-sensitive kinase and its substrate from PC12 cells. AB - The cell-free, nerve growth factor-sensitive incorporation of radioactive phosphate into a 100,000-dalton protein (Nsp100), observed in a previous study (End,D., Tolson, N., Hashimoto, S., and Guroff, G. (1983) J. Biol. Chem. 258, 6549-6555), has been characterized and the system fractionated. It is shown here that the decrease in incorporation due to treatment of the cells with nerve growth factor is transient, even in the continued presence of nerve growth factor. The decrease in radioactive phosphate incorporation is due to an inhibition of phosphorylation, not to a stimulation of a dephosphorylation. Evidence is presented to suggest that no soluble cofactors are needed for the phosphorylation and no soluble second messengers are responsible for the inhibition. It is demonstrated that the phosphorylation requires divalent cations; both Mg2+ and Mn2+ are effective in this regard. ATP is the preferred phosphate donor, the phosphorylation is maximal at pH values between 5 and 6, and Na+, K+, and Zn2+ are rather specific inhibitors. The system has been partially purified and the resolved components have been used to show that the kinase and the substrate are separate molecules, that the kinase, not the substrate, is the heat-labile portion, and that the kinase has a molecular weight of 110,000 130,000. Finally, evidence is presented to indicate that the kinase, not the substrate, is the component responsible for the decrease in phosphorylation seen after treatment of the cells with nerve growth factor. PMID- 3855850 TI - Sequential alterations in globin gene chromatin structure during erythroleukemia cell differentiation. AB - During differentiation of murine erythroleukemia cells, adult beta-globin gene chromatin acquires site-specific, DNase I hypersensitivity and an increased sensitivity in the globin gene region toward micrococcal nuclease (MNase) digestion. The relationship of these changes in chromatin structure to globin gene activation and to cellular commitment events has been studied. Imidazole, which blocks globin gene transcription during induction does not affect the terminal differentiation of the cells nor does it prevent the acquisition of DNAse I hypersensitivity. The formation of the inducible DNase I-hypersensitive site near the globin gene accompanies the developmental events which lead to cellular differentiation independent of the transcription process. The increased MNase sensitivity of the adult beta-globin gene region, normally preceded by the acquisition of 5' DNase I hypersensitivity, was blocked by the addition of imidazole prior to but not after globin gene activation. The enhanced MNase sensitivity was not abolished by the addition of actinomycin D and, thus, reflects a part of chromatin alterations that define potential for transcription. Therefore, there is a sequential series of chromatin alterations in the globin gene region associated with murine erythroleukemia cell differentiation. The appearance of the inducible 5' DNase I-hypersensitive site precedes the onset of globin gene transcription and is strongly correlated with commitment events. The enhanced MNase sensitivity is closely related to globin gene transcription, but it is not a consequence of the transcription process. In addition, the commitment of cells to terminal differentiation is dissociable from the stimulation of globin gene transcription. PMID- 3855853 TI - 7-Hydroxy-methotrexate and clinical toxicity following high-dose methotrexate therapy. AB - 7-Hydroxy-MTX production after consecutive high-dose MTX therapy (12 g/m2) was measured in 7 patients with osteosarcoma by HPLC. 7-Hydroxy-MTX serum values in the last cycle were found to be significantly lower compared with the first high dose MTX treatment of the adjuvant chemotherapy protocol (COSS 80). Moreover, in another patient highly reduced 7-hydroxy-MTX production was correlated with severe clinical toxicity. As 7-hydroxy-MTX is a 200 fold less potent dihydrofolic acid reductase inhibitor compared with MTX decreased production of the metabolite may lead to enhanced clinical toxicity which may not be predictable monitoring MTX serum levels alone. PMID- 3855852 TI - Functional performance after tibial rotationplasty. AB - We measured muscle strength, joint motion, and gait parameters and determined the electromyographic activities of the ankle and knee during walking, running, and stair-climbing in two children who had had a tibial rotationplasty for osteosarcoma of the distal end of the femur. Both had marked loss of strength in the plantar flexors on the side of the prosthesis compared with the sound side, although electromyographic recordings showed that the rotated calf muscles, to a substantial degree, had assumed the function of extensors of the prosthetic knee. Despite some abnormalities in gait, both children walked at speeds that were comparable to those of normal children. They could also run, climb stairs by stepping up with both limbs, and participate in many recreational activities. The functional abilities of these children suggested that rotationplasty, in patients with a similar lesion, is a worth-while alternative to above-the-knee amputation. PMID- 3855854 TI - Modified Nance and lingual appliances for unilateral tooth movement. PMID- 3855855 TI - Anterior space prediction with a microcomputer. PMID- 3855856 TI - Apical root resorption during Begg treatment. PMID- 3855857 TI - You never have a second chance to make a good first impression. PMID- 3855858 TI - Crozat treatment. PMID- 3855860 TI - Long-term orthodontic liability problems. PMID- 3855859 TI - Hyperpropulsor activator. PMID- 3855861 TI - Bionators in Class II treatment. PMID- 3855862 TI - 4-4 Crozat retainer. PMID- 3855863 TI - Progressive practice management. PMID- 3855864 TI - New antiplaque agent for orthodontic patients. PMID- 3855865 TI - Estrogens and antiestrogens stimulate release of bone resorbing activity by cultured human breast cancer cells. AB - Patients with advanced breast cancer may develop acute, severe hypercalcemia when treated with estrogens or antiestrogens. In this study, we examined the effects of estrogens and related compounds on the release of bone resorbing activity by cultured human breast cancer cells in vitro. We found that the estrogen receptor positive breast cancer cell line MCF-7 releases bone resorbing activity in response to low concentrations of 17 beta-estradiol. Bone resorbing activity was also released in response to the antiestrogen nafoxidine. Other steroidal compounds had no effect on the release of bone resorbing activity. Estrogen stimulated release of bone resorbing activity occurred with live bone cultures, but not with devitalized bones, indicating that the effect was bone cell mediated. The breast cancer cell line MDA-231, which does not have estrogen receptors, did not release bone resorbing activity in response to 17 beta estradiol or nafoxidine. Release of the bone resorbing activity by MCF-7 cells incubated with 17 beta-estradiol was inhibited by indomethacin (10 microM) and flufenamic acid (50 microM), two structurally unrelated compounds that inhibit prostaglandin synthesis. Concentrations of 17 beta-estradiol and nafoxidine that caused increased release of bone resorbing activity by the breast cancer cells caused a four- to fivefold increase in release of prostaglandins of the E series by MCF-7 cells. These data may explain why some patients with advanced breast cancer develop acute hypercalcemia when treated with estrogens or antiestrogens, and why bone metastases are more common in patients with estrogen receptor positive tumors. PMID- 3855866 TI - Heterogeneity of clonogenic cells in acute myeloblastic leukemia. AB - The expression of differentiation-associated surface antigens by the clonogenic leukemic cells from 20 patients with acute myeloblastic leukemia (AML) was studied with a panel of seven cytotoxic monoclonal antibodies (anti-Ia, -MY9, -PM 81, -AML-2-23, -Mol, -Mo2, and -MY3). The surface antigen phenotypes of the clonogenic cells were compared with the phenotypes of the whole leukemic cell population, and with the phenotypes of normal hematopoietic progenitor cells. In each case the clonogenic leukemic cells were found within a distinct subpopulation that was less "differentiated" than the total cell population. Clonogenic leukemic cells from different patients could be divided into three phenotype groups. In the first group (7 of 20 cases), the clonogenic cells expressed surface antigens characteristic of the normal multipotent colony forming cell (Ia, MY9). These cases tended to have "undifferentiated" (FAB M1) morphology, and the total cell population generally lacked expression of "late" monocyte antigens such as MY3 and Mo2. A second group (seven cases) of clonogenic cells expressed surface antigens characteristic of an "early" (day 14) colony forming unit granulocyte-monocyte (CFU-GM), and a third group (six cases) was characteristic of a "late" (day 7) CFU-GM. The cases in these latter two groups tended to have myelomonocytic (FAB M4) morphology and to express monocyte surface antigens. These results suggest that the clonogenic cells are a distinct subpopulation in all cases of AML, and may be derived from normal hematopoietic progenitor cells at multiple points in the differentiation pathway. The results further support the possibility that selected monoclonal antibodies have the potential to purge leukemic clonogenic cells from bone marrow in some AML patients without eliminating critical normal progenitor cells. PMID- 3855868 TI - Oral hygiene instruction in general dental practice by means of self-teaching manuals. AB - The present study evaluates the applicability of delivering oral hygiene instruction to patients in general dental practice by means of self-educational programs. Patients (55) seeking dental treatment in 3 general dental practices in Denmark were divided at random into a conventional professional instruction group (C) in which each individual received personal instruction by the dentist and a self-instruction group (S), in which the patients were given self-educational programs. In order to evaluate the effect of the 2 types of instruction, the presence or absence of dento-gingival plaque and gingival bleeding by probing was recorded prior to the instruction and after 3 and 6 months. The patient of the self-instruction group (S) answered a questionnaire about the treatment 1 week after they had received the self-instruction program. An identical improvement in oral hygiene and gingival health was recorded in both treatment groups after 3 and 6 months. This finding indicates, that the self-educational programs were as effective in changing the oral hygiene habits of the patients as was personal oral hygiene instruction by dental personnel. The answers of the patients to the post-treatment questionnaire reflected a favorable attitude towards the use of self-educational programs. PMID- 3855867 TI - Refractory anaemia terminating in a combined lymphoproliferative and myeloproliferative disorder. AB - We report a case of non-sideroblastic refractory anaemia which evolved to a double lymphomyeloproliferative disorder. At presentation, bone marrow appearances and peripheral blood pancytopenia without myelomonocytosis were consistent with a diagnosis of non-sideroblastic refractory anaemia. Subsequently, the patient developed pronounced myelomonocytosis and lymphocytosis with prolymphocytes. Light and transmission electron microscopy as well as surface marker studies were compatible with a diagnosis of prolymphocytic transformation of chronic lymphocytic leukaemia/prolymphocytic leukaemia associated with myelomonocytic leukaemia. The pathogenesis of such double lympho myeloproliferative disorders is discussed in the light of the evidence for common lymphoid and myeloid progenitor cells and some recent advances in the immunology of the myelodysplastic syndromes. PMID- 3855869 TI - Effects of cigarette smoking on the rate of plaque formation. AB - In 2 separate studies, plaque was harvested (i) from 15 smokers and 15 non smokers after a 48-h period without oral hygiene, and (ii) from 15 smokers and 12 non-smokers after a 48 h hygiene-free period following complete plaque removal by toothbrushing. No significant association emerged between wet weight of accumulated plaque and cigarette smoking, in either study. In the second study, the mean plaque calcium concentration was raised in smokers compared with non smokers, and significantly raised in 7 heavy smokers relative to non-smokers. In both instances, calcium concentration was significantly raised relative to (total) phosphorus concentration, which may indicate that the additional calcium was not in mineral deposits. These results may reflect an association between calcium concentration of plaque and tobacco consumption. PMID- 3855870 TI - Periodontal conditions, remaining teeth and oral hygiene habits in a group of Vietnamese refugees in Norway. AB - Since 1975, about 3500 Vietnamese refugees have come to Norway. The purpose of the present study was to report on remaining teeth and periodontal conditions in a population of 200 adolescent and adult Vietnamese refugees. The mean number of remaining teeth ranged from 27.8 in the youngest age group to 24.6 in the oldest. This number of teeth is slightly lower than reported from Norwegian populations, but similar to other Asian populations. Almost all index teeth showed dental plaque, and subgingival calculus was observed in 9 of 10 teeth after the age of 20. Gingival bleeding was seen on all index sites of 26.5% of the subjects and all subjects above the age of 40 had gingivitis adjacent to one or more index teeth. There was a progression of probeable pocket depths with increasing age. In the oldest age group, 72.7% had pockets between 3.5 mm and 5.5 mm. The data indicated that if optimal conditions should be obtained, substantial resources would be required. In populations with limited resources and with relatively few subjects with severe periodontal breakdown, it is suggested that an identification of subjects "at risk" to be dentally handicapped through loss of teeth, should be a priority. PMID- 3855871 TI - New attachment formation on teeth with a reduced but healthy periodontal ligament. AB - The present investigation was undertaken to examine whether a new connective tissue attachment will form on previously periodontitis-involved roots when reduced but healthy periodontal ligament tissue persists following periodontal treatment and the epithelium is prevented from migrating into the wound. In each of 4 monkeys, periodontal tissue breakdown was induced around one maxillary and one mandibular second premolar or first molar by placing orthodontic elastics around the teeth. The elastics were kept in situ until about 50% of the supporting tissues had been lost. 3 months following removal of the elastics, the crowns of the teeth were resected. The pocket epithelium and subjacent granulation tissue were excised and the cementum of the periodontitis-involved part of the roots was removed using a diamond bur. The roots were covered with a mucosal flap. The animals were sacrificed after 3 months of healing. The jaws were removed and histological sections of the experimental roots including their surrounding periodontal tissues were produced. The microscopic analysis disclosed that in all roots, new cementum with inserting collagen fibers had formed in the apical portion of the previously exposed root surfaces. It was always in continuity with the original cementum layer apical to the instrumental part of the root and was thickest in its apical portion, becoming gradually thinner in the coronal direction. In the roots, which for the entire length of the study remained covered by the oral mucosa, the extension in the coronal direction of this newly formed fibrous attachment amounted to an average of 1.0 mm with a range from 0.1 mm to 2.6 mm. These findings were interpreted to mean that new attachment is formed by coronal migration of cells originating from the periodontal ligament. PMID- 3855873 TI - A direct technique with a double lateral bridging flap for coverage of denuded root surface and gingiva extension. Clinical evaluation after 2 years. AB - We are introducing a new surgical technique which enables us to cover gingival recessions and extend the gingiva with a one-step procedure. This method can be described generally as a combination of a coronally repositioned flap and a modified vestibulum plastic. So far this method has been applied to 55 teeth of 19 different patients. The results have been observed for 2 years. After this time, 54.4% (30 teeth) still had complete coverage of the previously denuded root surfaces. The results show that it is possible to cover gingival recessions without increasing the zone of keratinized gingiva. PMID- 3855872 TI - Experimental gingivitis in relation to susceptibility to periodontal disease. (I.) Clinical observations. AB - The aim of the present study was to investigate the rate of development of experimentally-induced gingival inflammation in relation to the susceptibility to periodontal disease. By selection according to age, a younger (25-39 years) and an older (45-54 years) age group, with a comparable reduced but healthy periodontium, was selected. This equal amount of periodontal breakdown may suggest that the younger age group represented individuals with a relatively higher degree of susceptibility to periodontal disease. At the start of the experiment, each patient was instructed to abstain from oral hygiene procedures in 1 quadrant of the mouth for a period of 18 days. Results showed that all subjects developed signs of gingival inflammation. Regarding the development of redness and swelling, no differences could be assessed between the 2 age groups. However, analysis of the bleeding scores revealed that bleeding on probing developed more rapidly in the younger age group. It was concluded that those patients who have suffered from a more rapid form of periodontal disease also develop inflammation, in terms of bleeding on probing, more rapidly. PMID- 3855874 TI - The composition of the subgingival microflora of young adults suffering from juvenile periodontitis. AB - The composition of subgingival plaque, from healthy and periodontally diseased regions, as well as the clinical periodontal condition of 6 patients, 17 to 24 years-old suffering from juvenile periodontitis were examined. 6 older patients with rapidly progressive periodontitis served as a control. Samples of subgingival plaque were taken from first molars and central incisors and were analysed morphologically by dark-field microscopy. In the control group in healthy regions the ratio between non-motile and motile bacteria was 27:1 and about 1:1 in deep pockets. In the juvenile periodontitis group in diseased regions, motile bacteria made up only 1/4 of the bacteria present. The results clearly show that our relatively old patients with juvenile periodontitis had a completely different microflora in their periodontally diseased regions than patients with common periodontitis. As regards our observations by dark-field microscopy, one can assume, however, that with increasing age, there might be a shift of the flora associated with juvenile periodontitis lesions from a rather simple composition to a more complex composition very similar to the flora seen in rapidly progressive adult periodontitis lesions. PMID- 3855875 TI - Effect of periodontal therapy on spontaneous lymphocyte response and neutrophil chemotaxis in localized and generalized juvenile periodontitis patients. AB - The etiology and pathogenesis of juvenile periodontitis may involve dysfunctions of the host response. In particular, the neutrophil and the lymphocyte have been implicated in the disease. The purpose of the present study was to examine the in vitro spontaneous lymphocyte response and neutrophil chemotaxis in populations of localized juvenile periodontitis (LJP) and generalized juvenile periodontitis (GJP) patients and age- and sex-matched healthy subjects (HS). These laboratory values were also evaluated immediately following and 1 year after periodontal therapy. The results show that spontaneous lymphocyte responses reflecting the autologous mixed lymphocyte reaction (AMLR) are depressed for GJP patients. The decreased AMLR in the GJP group appears to represent an abnormal T-cell function which may reflect activity of the periodontal lesion. LJP patients have an increased AMLR response, although it was not statistically significant. 1 year following active periodontal therapy, spontaneous lymphocyte responsiveness returned to normal in most GJP patients. The increased spontaneous lymphocyte responsiveness of LJP patients was not changed either immediately following active periodontal therapy or 1 year later. LJP and GJP patients exhibited a neutrophil chemotaxis defect when compared to cells from HS. This neutrophil defect was still observed 1 year following active therapy. PMID- 3855876 TI - Gingival inflammatory reaction in children at different ages. AB - Earlier studies have demonstrated that, with similar levels of plaque accumulation, the tendency to develop gingivitis is lower in pre-school children than in young adults. No studies are available in which the gingival reaction in older children and adults to a given amount of plaque has been compared. The aim of the present study was to compare the gingival reaction to dental plaque in children of different ages and in adults. 3 groups of children (4-6, 7-9 and 14 16 years of age) and 1 group of adults (20-22 years of age) were studied. The degree of gingivitis was determined using the gingival index and the amount of dental plaque was assessed in terms of the plaque index. The results showed that with a given plaque score, the % of high gingivitis scores was less in the 4-6 year-old children than in the older children and adults. At all levels of plaque accumulation, the highest degree of gingival inflammation was noted in the 14-16 year-old children and in the adults. The results indicate that the gingival reactivity increases gradually from early childhood to adult age. PMID- 3855877 TI - The mercury-multiple sclerosis connection. PMID- 3855878 TI - Study of ascorbate status in murine and human leukaemias. AB - Since mice can synthesize ascorbic acid but man cannot, the ascorbate status in murine and human leukaemia was compared. The decline in plasma ascorbate concentration in both cases indicates that vitamin C deficiency occurs in malignancy. Analysis of tissue ascorbate values in mice also indicated that an enhanced rate of utilization of this vitamin occurs during malignancy, as does an increased rate of excretion, and both events may be responsible for vitamin C deficiency. The hepatic ascorbate values suggest an endeavour by the animals to compensate for the loss through increased synthesis and storage of the vitamin, at least in the early stages of the disease. PMID- 3855879 TI - Premature sebaceous gland hyperplasia: successful treatment with isotretinoin. AB - Hyperplasia of sebaceous glands is a common cause of papulonodular facial lesions that occur in middle-aged and older patients. Recently, several cases of premature sebaceous gland hyperplasia have been reported. In these patients the lesions had persisted despite vigorous attempts at therapy. We present a case of premature sebaceous gland hyperplasia that was successfully treated with isotretinoin. PMID- 3855880 TI - Primary cutaneous aspergillosis in six leukemic children. AB - We report a cluster of primary cutaneous aspergillosis in six children with hematologic malignancy. When first seen, they had hemorrhagic bullae caused by Aspergillus flavus, Aspergillus fumigatus, and Aspergillus niger at the sites of insertion of intravenous cannulas or where arm boards had been taped to the extremities. Rapid diagnosis of cutaneous aspergillosis was made by direct examination of the blister roof with potassium hydroxide before it progressed to a necrotic ulcer. Intravenous amphotericin was instituted promptly in five of six patients, and none died of disseminated aspergillosis. Epidemiologic investigation tracked the source of aspergillus to a storeroom with a false ceiling that had recently been repaired for a water leak. PMID- 3855881 TI - Analysis of dental hard tissue by computerized microdensitometry. AB - One method of quantitating mineral content in thin sections of dental hard tissue is microdensitometry of contact radiographs. This method is often applied to analysis of artificial caries lesions. Because there is great inter- and intra tooth variability, a single microdensitometric scan will not accurately reflect the content or distribution of mineral within an individual lesion, or within a group of lesions. To increase the number of replicates than can be handled routinely, a computer-driven microdensitometer has been used with a step series of aluminum and enamel to quantitate mineral content values at approximately 1 micron intervals. Accurate assessment of an individual lesion was made possible by averaging multiple scans of the lesion on each of several thin sections prepared from the lesion. Mean mineral profiles of treatment groups were then made from the profiles of the individual lesion. These data reduction techniques allowed for a large number of replicates to be used in the measurement of remineralization. The computerized microdensitometric system described here was developed to allow for an objective, quantitative analysis of the mineral content of dental hard tissue. PMID- 3855882 TI - Caries prevalence in Turner's syndrome (45,X females). AB - Dental caries prevelance in permanent teeth (DFS) was studied in 50 patients with Turner's syndrome (45,X females) and 41 normal first-degree female relatives. Caries prevalence was lower in 45,X women than in controls, and this difference was more pronounced in the incisor region than in pre-molar and molar teeth. PMID- 3855883 TI - Malocclusion, masticatory muscle, and temporomandibular joint tenderness. AB - The Angle classification of occlusion, as well as occlusal contacts determined at retrusion, mediotrusion, laterotrusion, and protrusion were recorded from 298 dental students. Various masticatory muscles and the TM joints were palpated simultaneously for tenderness. No significant relationships were observed between (1) tenderness and Angle class or (2) tenderness and any occlusal contact. In relation to a slide between retruded contact position and intercuspal position: measurements for (a) vertical and (b) horizontal displacements, but not (c) lateral deflection, were greater in Class I students without tenderness than in Class I students with tenderness. PMID- 3855884 TI - A technique for characterizing casting behavior of dental alloys. AB - A technique for characterizing casting behavior of dental alloys has been developed and tested. The method employs easily reproducible specimen patterns and uses equipment and procedures generally available in dental prosthetic laboratories. A castability value is arrived at by counting complete segments of a cast alloy grid. Test results indicate that the castability evaluation procedure described can be a valuable aid in the laboratory for both selecting and using dental materials for producing cast restorations. The test method would also appear useful for the evaluation of products and techniques during research and development. An absolute minimum for the castability value determined relative to clinical and laboratory efficacy has yet to be established. PMID- 3855885 TI - Tarnishing in vivo and in vitro of a low-gold alloy related to its structure. AB - Studies on tarnishing of a low-gold alloy, both as-cast and solid-solution annealed, have been carried out in vivo and compared with that of a type III gold alloy. Small polished samples were partly embedded in complete dentures for nine months. Generally, the low-gold alloy in the as-cast state was found to be more prone to tarnishing than were the other two materials, followed by the same alloy, solid-solution-annealed. These results are in agreement with both previous and present in vitro studies using 2% solutions of Na2S. The tarnish attacks followed the pattern of Cu segregations in vitro, and frequently also in vivo. Previous findings in vitro, on the other hand, show that tarnishing occurs predominantly on Ag-rich phases. The link is to be sought in the structural details. In the Cu-rich regions along grain boundaries and in interdendritic positions, eutectic particles with thin lamellae (approximately equal to 0.05 micron) of alternating Ag and Cu enrichments occurred. In these areas, we found a more unstable matrix with increased tendency to splitting into similar, but even thinner, lamellae. Most likely, these lamellae of alternating compositions act as galvanic cells. The cathodic reduction of oxygen probably takes place mainly on the Cu-rich lamellae, which are Au-enriched on the surface due to initial selective dissolution of Cu. With increasing time, attacks up to several micron in depth comprising both kinds of lamellae tend to occur at the grain boundary regions in an in vivo test, probably by a fretting corrosion mechanism. PMID- 3855886 TI - Enhanced fluoride uptake from mouthrinses. AB - It has been shown in laboratory and animal studies that tooth enamel becomes considerably more reactive toward low levels of fluoride after receiving pre treatment which forms dicalcium phosphate dihydrate (DCPD) in the enamel as an intermediate. This in vitro study was undertaken to determine the effect on human enamel fluoride uptake of incorporating DCPD-forming rinses into a conventional fluoride rinsing program. In one group, enamel samples received a one-minute rinse with 0.2% NaF each day for 20 days. Samples in the second group were treated identically, except that they were also given a one-minute DCPD-forming rinse prior to the first, sixth, eleventh, and sixteenth fluoride rinses. At the end of the rinsing program, all samples were washed in 1 M KOH to remove labile fluorides. The enamel biopsy data showed that the fluoride uptake resulting from 0.2% NaF alone was not statistically significant, whereas uptake produced by the DCPD-forming plus NaF rinses was significant. The results suggest that the DCPD forming rinse may improve the efficacy of fluoride rinse programs. PMID- 3855887 TI - Effect of environmental conditions on the fluoride sensitivity of acid production by S. sanguis NCTC 7865. AB - Growth and environmental conditions affected the fluoride (F) sensitivity of acid production by Streptococcus sanguis NCTC 7865. Cells grown glucose-limited in a chemostat were generally more sensitive than those harvested from cultures in which there was an excess of glucose (amino acid-limited). There was no consistent relationship between the growth rate of cells and their F sensitivity. Slower-growing cells (mean generation time = 14 hr) were more sensitive than those growing quickly when glucose was the limiting nutrient, whereas the faster growing cells from the glucose-excess culture were most susceptible. The pH of the environment markedly affected the F sensitivity of cells: 2 mM F- was sufficient to abolish acid production by cells incubated at pH 5.0, whereas 24 mM F- did not totally inhibit glycolysis at pH 7.0 or 8.0. Regardless of pH and growth conditions, the cationic composition of the environment had the most pronounced effect on acid production and fluoride sensitivity. Cells washed and re-suspended in KCl were more acidogenic and more sensitive to F than the same cells treated with saline. At pH 7.0 and 8.0, saline-washed cells were comparatively unaffected by F, while glycolysis by the same cells at the same pH but washed in KCl could be inhibited by up to 80%. These results suggested that F inhibition could not be explained merely on the basis of HF uptake at low pH values. Since it has been shown previously that the activity of the energized membrane is maintained by K+ and dissipated in the presence of Na+, it was proposed that proton motive force (pmf) might be involved in the uptake of F-. PMID- 3855888 TI - Effect of NaF and pH on the growth and glycolytic rate of recently isolated strains of oral Lactobacillus species. AB - Twenty-eight fresh and seven type strains of Lactobacillus species were tested for their ability to grow and metabolize glucose in the presence of fluoride. While there was variation between the test organisms, freshly isolated strains were generally more fluoride-tolerant than were the type strains, and a group of seven strains would grow well at pH 4.5 with 5.3 mm NaF. Glucose metabolism by representative strains of this latter group required average fluoride concentrations of 204, 64, and 9.3 mM to inhibit glycolysis completely at pH 7.0, 6.0, and 5.0, respectively. These values are ten times higher than those required to inhibit glucose metabolism by Streptococcus mutans. PMID- 3855889 TI - The effects of different concentrations of sucrose, fructose, and glucose on pH changes by Streptococcus mitior in an artificial mouth. AB - The aim of this study was to determine the effects of the initial sucrose (S) concentration, as well as those of fructose (F), glucose (G), and invert sugar (F/G), on the pH developed by a layer of S. mitior, to represent dental plaque, in an artificial mouth which simulates the process of oral sugar clearance. At S, F. G, and F/G concentrations of 2% and with normal oral sugar clearance rates, the bacteria produced a smaller pH fall from S than from the other sugars; at initial concentrations of 20%, however, the differences were not significant. With constant S concentrations of 0.5-35%, the minimum pH reached was 4.03 +/- 0.14 (S.D.); with S concentrations of 50% and above, slightly but significantly higher values (4.41 +/- 0.34) occurred. However, with normal sugar clearance, the pH fall was much less than with a constant concentration and was dependent on the S concentration over the range of 0-10%, but was independent at higher concentrations. Exposure of the bacteria to S for as short a period as two min during normal sugar clearance gave a nearly maximum pH fall. This suggests that rinsing the mouth with water more than two min after consumption of sucrose in liquid form will have very little effect in reducing the pH fall in dental plaque. A more appropriate method for reducing acid formation by dental plaque would be consumption of a salivary stimulant which would increase the flow rate and buffer capacity of the saliva. PMID- 3855890 TI - Sugar clearance from saliva and intra-oral spaces. AB - The clearance of glucose from saliva was compared with that from spaces located in an intra-oral appliance. The spaces (N = 8) were similar in shape and size to posterior interdental spaces and could be sampled with a microsyringe without removing the appliance from the mouth. The subjects (N = 5) rinsed their mouths with solutions of 5, 10, or 25% glucose. Samples were obtained from a pair of spaces and from saliva at standard intervals and were analyzed for glucose. The rate of glucose clearance was consistently slower from the spaces than from bulk saliva, as shown by higher concentrations and longer clearance times for the spaces. The clearance curves were similar in shape and were rectilinear when the logarithms of the concentrations were plotted against time. The rate of clearance from the spaces appears to be characteristic for an individual, as was also true of salivary clearance. PMID- 3855891 TI - Remineralization of softened bovine enamel following treatment of overlying plaque with a mineral-enriching solution. AB - Pre-softened, gauze-covered bovine enamel blocks were worn in the buccal sulcus of five subjects for seven days. Artificial plaque enmeshed in the gauze was treated four times per day for four days with an enzyme-dependent mineralizing solution, resulting in 20-, 10-, and 200-fold increases in Ca, P, and F, respectively. Enamel beneath this mineral-enriched plaque recovered 37% of the hardness lost from pre-softening, while control enamel beneath untreated plaque recovered only 14%. Test enamel contained from five to 13 times as much F as did control enamel in the outer four layers sampled. Even though direct use of the mineralizing solution without the interposition of plaque caused a hardness recovery and F uptake similar to those in test enamel in vivo, a direct solution effect on enamel is not thought to explain the in vivo effects. Plaque treated with the urea-containing solution rapidly reaches a pH greater than 8, when a precipitate develops, leaving much-reduced ion concentrations in solution. Direct exposure of softened enamel to such a supernatant resulted in reduced hardness recovery and F uptake. It is concluded that the in vivo enamel remineralization was due mainly to the presence of a mineral phase in the overlying plaque. This mineral could have promoted remineralization by creating mildly supersaturated conditions during normal plaque pH cycles. PMID- 3855892 TI - Polyamines of dental plaque in caries-resistant vs. caries-susceptible adults. AB - Utilizing a sensitive liquid chromatographic system, polyamines were quantitated in three-day plaque from 13 caries-resistant (CR) and 35 caries-susceptible (CS) adults after they had fasted for 12 hours. The values for putrescine and cadaverine were significantly higher in the CR group. This may be attributed to a greater availability of salivary substrate precursors of polyamines and/or higher levels of biosynthetic decarboxylase activities in the CR subjects, or both. PMID- 3855893 TI - Pharmacokinetics of chronic fluoride ingestion in growing pigs. AB - The present study was undertaken to estimate bio-availability and biological half life of fluoride and accumulation of fluoride in bone in the domestic pig. Eight animals receiving 2 mg F-/kg b.w. per day from age 8 to 14 months were compared with eight controls. Plasma fluoride concentrations just prior to the daily oral dose were measured at regular intervals. After 112 days post-dose, plasma fluoride levels were measured over a 48-hour period following the daily oral dose or a single intravenous dose. Mean bio-availability factor for the oral dose was 0.3 (range 0.2-0.4), and mean biological half-life was 59 days (range 49-72). Bone fluoride content calculated from the pharmacokinetic parameters derived from plasma data was similar to the content of fluoride measured in the bone at slaughter. The study showed that accumulation of fluoride in bone influences plasma fluoride levels during chronic administration of fluoride to growing pigs. The long biological half-life found showed that it was not possible to achieve steady-state plasma levels within the six-month experimental period used. This means that, for dose-response studies of dental fluorosis in this animal, it is not possible to achieve steady-state plasma concentrations as a basis for correlations to the degrees of pathological change observed in the teeth. PMID- 3855894 TI - Effects of a Fusobacterium nucleatum extract on immunoregulation in mice. AB - The purpose of this study was to examine the effect of an extract of Fusobacterium nucleatum on humoral and cell-mediated immunity and phagocyte functions in mice. The extract was obtained from the heat-inactivated supernatant of sonicated F. nucleatum. Mouse splenocytes were cultured with sheep red blood cells (SRBC), and antibody formation was assayed by counting the plaque-forming cells (PFC). After C3H mouse skin was grafted onto the BALB/c mouse, cytotoxicity of BALB/c mouse splenocytes to L-cells was enumerated, T- and B-cell blastogenesis was determined by the uptake of 3H-thymidine. In vivo phagocyte functions were measured using carbon clearance test, bactericidal, and acid phosphatase activity assays. The number of SRBC-specific and non-specific PFC in splenocytes stimulated with the extract increased 2.5-8.7-fold over that of unstimulated splenocytes. Cytotoxicity of splenocytes from the extract-injected mice decreased in a dose-dependent fashion at 12 days after grafting. T-cell mitogenicity of the extract was observed. The carbon clearance rate was reduced, and bactericidal and acid phosphatase activities were elevated by the extract injection of the mice. In conclusion, F. nucleatum extract has an adjuvant effect on humoral immunity, and a suppressive effect on cell-mediated immunity and activated phagocyte functions. PMID- 3855895 TI - Dissolution studies of human enamel treated with aluminum solutions. AB - Dissolution tests using human enamel were conducted after treatment with aqueous solutions of various aluminum (Al) salts. All Al compounds, except those which formed stable Al-complexes, greatly decreased enamel dissolution in a pH 4 acetate buffer. A comparison with fluoride compounds demonstrated that Al was equivalent to SnF2 and more effective than NaF and Na2PO3F. Furthermore, the reduction in enamel dissolution produced by Al persisted after more than three hr of successive demineralization, which was twice as long as that observed with a pH 4.5 SnF2 solution. PMID- 3855896 TI - Intercuspal distances of maxillary pre-molar teeth in Australian Aboriginals. AB - Intercuspal distances and mesiodistal and buccolingual crown diameters of maxillary pre-molars were recorded from dental casts of 262 Australian Aboriginals. Although mesiodistal and buccolingual dimensions showed sexual dimorphism, no significant differences were noted between the sexes for intercuspal distances. Intercuspal dimensions showed greater variability and fluctuating asymmetry than did either of the traditional measures. No significant differences in heritability were noted among the three dimensions. Correlations between mesiodistal and buccolingual dimensions were higher than those between buccolingual and intercuspal measures. It appears that the sex differences, which are observed in overall crown dimensions, are established after the cusp tips are localized. Intercuspal distances appear to have a strong genetic component of variability, although they show high phenotypic variability and fluctuating asymmetry. Total tooth size may be subject to more intense selective pressures than the sites of initial calcification. PMID- 3855897 TI - Immediate and delayed effects of an enzyme-dependent mineralizing mouthrinse on dental plaque. AB - Twenty-two children aged 13 to 14 years rinsed for 3 X 1 min periods with a supersaturated calcium phosphate solution containing urea and monofluorophosphate. Plaque sampled one min after the last rinse showed a marked increase in water-extractable F and a smaller increase in Ca but no increase in water-extractable P. Water-insoluble forms of all three ions were elevated, however. The mean plaque pH was 8.28. Plaque sampled 24 hr after the last rinse showed significant increases in water-insoluble F and Ca only, and no increase in pH. The prompt pH rise and disappearance of water-soluble P suggest that, on exposure to the mineralizing solution, urea and monofluorophosphate are rapidly hydrolyzed by plaque enzymes to provide catabolites which cause the immediate precipitation of fluoridated calcium phosphate. PMID- 3855898 TI - Systematic assessment of color removal following vital bleaching of intrinsically stained teeth. AB - Various treatment variables associated with a standard bleaching technique were systematically recorded in 53 individuals exhibiting intrinsic discoloration of permanent teeth. These variables (predictors) included: (1) etiology (fluoride or tetracycline); (2) age of the patient; (3) the presented color of the stain; (4) the intensity of that color; (5) a long versus short bleaching time technique; and (6) the number of bleaching sessions. These were assessed as to their relationship with the results of treatment (dependent variable). The findings of a multiple regression analysis revealed that the contributions of the individual predictors were significantly different between those stains caused by tetracycline ingestion (N = 27) and those stains due to fluoride ingestion (N = 20). The analysis also revealed that those variables contributing to a significant proportion of the variance in results of treatment when tetracycline was the cause were: (1) the color of the stain and (2) the number of bleaching sessions. When fluoride was apparently the causal agent: (1) the bleaching time technique; (2) age of the patient; (3) color of the stain; and (4) the number of bleaching sessions contributed to a significant proportion of the variance in the results of treatment. PMID- 3855899 TI - Dental caries and tetracycline-stained dentition in an American Indian population. AB - Complaints of enamel defects in American Indian children residing on the St. Regis reservation in New York State prompted an epidemiological study. The results of that study, reported earlier (Rebich et al., 1983), indicated that over one-fifth of the American Indian children had discoloration of the dentition due to ingestion of tetracycline during the years of tooth formation. These data also provided an ideal opportunity to examine the link between tetracycline staining and caries which has been postulated by previous authors. American Indian children, ages 7-18, were found to have a higher caries experience than other children and a lower rate of dental service utilization, as evidenced by the filled component of the DMFS index (FS/DMFS). Within the American Indian population, however, no indication was found of any association between tetracycline staining and dental caries. PMID- 3855902 TI - Abstracts of papers. 63rd general session, International Association for Dental Research. Annual session, American Association for Dental Research. March 21-24, 1985, Las Vegas, Nevada. PMID- 3855901 TI - Creep-fatigue as a possible cause of dental amalgam margin failure. AB - Fracture of the margins is the most common cause of failure of dental amalgam restorations. Both corrosion and creep have been identified as possible contributors to this type of failure. The stresses that induce creep may arise from the continued setting expansion of the amalgam, the formation of corrosion products, mastication, or from the thermal expansion of the amalgam during ingestion of hot foods. The latter two are low-frequency cyclic stresses. The amalgams used in dentistry have fusion temperatures only about 40 degrees C above mouth temperature, and they experience grain boundary sliding during creep deformation. Since grain boundary sliding, low-frequency cyclic stresses, and a temperature near the fusion temperature of the alloy are prerequisites for so called "creep-fatigue fracture", this type of fracture may contribute to amalgam margin failure. Amalgam made from seven different alloys was condensed into stainless steel dies. After being allowed to set for seven days, the specimens were thermally cycled between 4 degrees C and 50 degrees C for 500 and 1000 cycles. Amalgam margin integrity was evaluated by scanning electron microscopy both before and after each cycling period. The amount of margin fracture was calculated after 1000 cycles. Thermal cycling of amalgam restorations placed in stainless steel dies resulted in predominantly intergranular fracturing of the amalgam margins, indicating that creep-fatigue failure may be a significant contributor to in vivo margin fracturing. PMID- 3855903 TI - Baccalaureate dental hygiene education: creating a reality. PMID- 3855900 TI - Some physico-chemical properties of deciduous enamel of children with and without pre-natal fluoride supplementation (PNF). AB - Physico-chemical investigations of enamel from deciduous teeth of a small number of children with and without pre-natal fluoride supplementation (PNF) exhibited the following differences between the PNF and non-PNF enamel, with the former showing: (a) more homogeneous and less extensive patterns of acid-etching; (b) denser crystal populations in intra-prismatic regions; (c) larger prism dimensions; (d) greater total mineral density (wt%ash); (e) higher degree of crystallinity; (f) smaller a-axis dimensions; and (g) more fluoride and less carbonate contents. On the basis of these preliminary findings, further studies with larger numbers of samples would seem appropriate. PMID- 3855904 TI - A profile of organizational characteristics of colleges of dentistry. AB - This study investigated the organizational characteristics of colleges of dentistry as perceived by their deans, associate deans, and department chairs. Likert's Profile of Organizational Characteristics is used to describe the administrative structures of the colleges on a continuum from exploitive/authoritative through benevolent/authoritative and consultative to participatory. In addition, administrators were asked to evaluate their colleges' effectiveness in adapting to an environment of change. The results indicate a relatively low level of participation in administration in contrast to a high desire for participation, and that administrators believe their colleges are only marginally effective in adapting to change. PMID- 3855905 TI - Use and application of structural models in dental education research. AB - The notion of prediction implies causation. Path and structural models explore the causal links rather than mere empirical relationships between variables. This technique involves a breakdown of correlations; it differs from correlation and regression methods in that it provides relevant information in the presence of important but unobserved (latent) explanatory variables and of measurement errors in the data. It also allows for more than one regression analysis simultaneously and affords inference through tests of the model. In this study, latent abilities of dental students were analyzed as causes and professional achievements as effects, with preadmission performances as indicators of latent abilities. A model with three constructs is consistent with the observed data. The results demonstrate that whereas correlation analysis presents limitations in interpretation, structural analysis focuses clearly on the direct impact of the quality of dental school education, rather than preadmission background, on clinical performance and board success as measures of future professional performance. PMID- 3855906 TI - Description of a faculty-student group practice. AB - Dental schools are facing budgetary constraints, decreasing clinic patient populations, and increasing competition. At the same time, there is a need to provide students a realistic educational environment. The Dental Practice Systems (DPS) Program is a partially self-supported student-faculty group practice designed to address these issues. All individuals appearing for care are accepted into the program. Services are delivered by vertical teams of faculty preceptors, in-house specialty consultants, dental and dental hygiene students, and appropriate auxiliaries. All third- and fourth-year students rotate through the program providing clinical services. In addition, fourth-year students are assigned specific managerial responsibilities. The DPS Program maximizes the use of auxiliaries and students, allowing each to function as autonomously as is consistent with good patient care. PMID- 3855907 TI - Student perception of faculty role models. AB - Few studies have been conducted on the effect of faculty role models on dental students. Questionnaires were developed to compare faculty self-perceptions with dental students' perceptions of the role they desired to achieve. Results indicated a minimal relationship between the self-perceptions of faculty and the students' identification of their desired future role in the dental profession. Furthermore, faculty were not perceived by students as being the most influential in molding their feelings about the practice of dentistry. PMID- 3855908 TI - Effects of reducing senior clinical requirements. AB - This study investigated the effects of reducing dental clinical requirements. Twenty-seven senior students participated in a modified system in which requirements were reduced to essential experiences, points were awarded for all procedures completed, and a total point requirement was created to ensure comprehensive care. The remaining seniors (N = 97), who operated under the conventional requirement system, served as controls. No significant differences were found between the groups in daily clinic grades, comprehensive examination performance, final senior-year grade point average, or number of procedures completed. A year-end questionnaire on stress and anxiety indicated that the experimental group perceived less stress and anxiety, were significantly more positive about their performance evaluations, and perceived significantly less pressure to complete procedures. PMID- 3855909 TI - Medical emergency education in American dental schools. PMID- 3855910 TI - Team building: implications for dental practice. PMID- 3855911 TI - The dental implications of xerostomia. A review of the literature. PMID- 3855912 TI - Visible light-cured composites and activating units. Council on Dental Materials, Instruments, and Equipment. AB - In summary, visible light-activated composites offer better regulation of working time. Their composition differs from chemically activated composites only in the initiators and activators. The physical and mechanical properties of adequately polymerized photoactivated composites are similar to chemically activated composites. Depth of cure evaluations of the photoactivated composites are dependent on many factors, both experimental and inherent. There is currently no consensus on depth of cure values and evaluation methods. It is suggested that, if necessary, visible light-activated composites should be placed and polymerized in about 2-mm increments. It is prudent to use a longer exposure time. Exposure of visible light composites to dental operatory lights or strong ambient lighting (or both) during restorative procedures should be minimized to avoid premature polymerization. There are differences in design, spectral distribution, and radiation intensity of photoactivating light units. No definitive information is currently available on the effectiveness and optimal conditions for use of different light/composite combinations. Little information is currently available on the bioeffect of visible light radiation on human optical systems and oral tissue. At the present time there are reports of afterimages but no long-lasting bioeffects. It is strongly recommended that precautions should be taken in the care, use, and operation of photoactivating light units. Protective filter glasses should be used. PMID- 3855913 TI - Ehlers-Danlos syndrome. PMID- 3855915 TI - Stress in dentistry: where's the evidence? PMID- 3855914 TI - Treatment confusion. PMID- 3855916 TI - The Protopappas anesthesia deaths. PMID- 3855917 TI - Internal marketing and quality assurance through patient feedback. PMID- 3855919 TI - Amalgam tattoo: report of an unusual clinical presentation and the use of energy dispersive X-ray analysis as an aid to diagnosis. AB - An unusual appearing gingival amalgam pigmentation (amalgam tattoo) that completely surrounded the maxillary right first premolar in a 13-year-old boy is presented. Because of the wide distribution and apparent clinical progression of the discoloration, an excisional biopsy was performed. The histopathologic diagnosis of amalgam pigmentation was confirmed in paraffin sections by energy dispersive X-ray microanalysis. Silver, tin, and mercury were detected in the specimen. PMID- 3855918 TI - An oral disease prevention program for patients receiving radiation and chemotherapy. AB - Thirteen years of treating more than 2,950 patients at the National Institute of Dental Research clinic have shown that a variety of potential oral sequelae associated with cancer therapy can be prevented, reduced in severity, or palliatively alleviated when the dental team has an opportunity to participate in the patient's care. The keystone of this success is based on early referral of the patient for dental consultation, treatment before the initiation of cancer therapy, and a well-defined orientation program to inform patients and their families about the difficulties they may experience. Meticulous attention to oral microbial control, prophylactic use of fluoride gels, and palliative treatment of soft tissue lesions may significantly reduce the oral morbidity associated with radiation and cytotoxic chemotherapy. Diligent personal oral health care and frequent dental recall appointments are recommended for the remainder of the patient's life. It has been our experience that patients who are not followed closely after irradiation therapy have an increased incidence of caries as a result of noncompliance with preventive regimens. The ethical and medicolegal responsibility to fully inform the patient of these recommendations lies with both the medical and dental personnel at the facility providing the radiation chemotherapy service. The general dentist shares the responsibility for continuity of long-term oral health care. PMID- 3855921 TI - Talon cusp: a preventive approach to treatment. PMID- 3855920 TI - Computerized tomography as a guide in the diagnosis of temporomandibular joint disease. AB - As described, CT is a noninvasive method for providing detailed views of both the soft and hard tissues of the TMJ region. Because internal derangements of the joint involve both of these structures, CT can provide an invaluable tool in the study, diagnosis, and treatment of various disorders of this nature. It is extremely important, however, to create a close working relationship with the radiologist who will be performing these studies. Only with adequate clinical study and information communicated to the radiologist can true benefits be obtained. As CT scans are available nationwide, this technique should be available to nearly any practitioner in the country. CT can be useful in both diagnostic and therapeutic modalities. On a diagnostic basis, it can provide a tomographic study of the osseous structures of the condyle, fossa, articular eminence, and surrounding hard tissues. By varying the slices, views of the medial and lateral poles as well as the central portions of the region, can be obtained. In this way, various arthroses, tumors, cysts, fractures, true ankylosis, neoplasias, developmental abnormalities, and other bony abnormalities can be clearly found. Therapeutically, CT can evaluate the success of treatment aimed at reestablishing proper disk-condylar relationships. However, the major advantage of TMJ CT is the observation of the soft tissue of the articular disk. By the use of CT, especially enhanced by the blink mode, we can see how the disk relates to the condyle. If a series of views are taken in both the closed and open position, we can observe the disk-condylar relationship during this range of motion.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3855922 TI - Vaccination of a county dental society against hepatitis B. AB - This paper describes a countywide program to screen and vaccinate dentists, hygienists, and assistants against hepatitis B. Prevaccination screening utilizing anti-HBc as the marker indicating previous exposure to hepatitis B demonstrated positivity rates of 27%, 12%, and 14%, respectively. Suggestions are included for other dental societies that are considering adopting a vaccination program. PMID- 3855923 TI - History and physical examination by oral and maxillofacial surgeons: the development of a physical assessment course. AB - Qualified oral surgeons may be granted hospital privileges to perform history and physical examinations on their patients as a result of a JCAH policy change, which became effective in January 1982. Oral surgeons must apply for and be granted this privilege from their affiliate hospitals and must demonstrate their qualifications. Various criteria can be used to assess qualification, including a review of the applicant's training in physical diagnosis in residency training, and participation in physical assessment continuing education programs. Review courses that feature hands-on practice are useful to oral surgeons interested in updating and refining their skills. Since the University of Illinois began offering a review course in 1981, 91 oral surgeons have completed the 2-day intensive review program. A follow-up survey of the participants indicates that the oral surgeons are applying for medical staff privileges. In a survey of 30 oral surgeons who participated in the course during 1982, 13 (43%) indicated that they had obtained the privilege to perform histories and physical examinations from their local hospitals. PMID- 3855924 TI - Well-defined radiolucent area involving the anterior maxilla. AB - An example of a large and symptomatic nasopalatine duct cyst is presented. This cyst is the most common type of developmental or fissural cyst occurring in the maxilla. Treatment for most patients is conservative surgical excision. The excised tissue should be submitted for histopathologic examination to establish a definitive diagnosis and to rule out the possibility of a more serious lesion. PMID- 3855925 TI - Dentistry on stamps. PMID- 3855926 TI - Fluoride-releasing sealants. PMID- 3855927 TI - Dentist unemployment--a Scandinavian reality. PMID- 3855928 TI - The effects of beryllium and other adjuvants on Ia expression by macrophages. PMID- 3855929 TI - Effect of altered membrane fluidity on NK cell-mediated cytotoxicity. I. Selective inhibition of the recognition or post recognition events in the cytolytic pathway of NK cells. AB - NK cell-mediated cytotoxicity results from membrane interactions between NK effector and target cells. The role of membrane fluidity in these events is not known. The present study was undertaken to investigate the effect of changes in membrane lipid fluidity of NK effector and NK-sensitive target cells on the lytic pathway of NK cell-mediated cytotoxicity. Fluidity was modulated by various lipids and measured by fluorescence polarization. NK effector cells treated with phosphatidylcholine complexed with polyvinylpyrrolidone (PVP) and bovine serum albumin (BSA) showed increased membrane fluidity. This fluidization of the effector cell membrane resulted in a significant inhibition of cytotoxic activity in the 51Cr-release assay. Single cell analysis revealed that the inhibition was due to a decrease in the frequency of NK target conjugates and reduced killing of conjugated targets. Rigidification of the NK effector cell membranes by treatment with cholesteryl hemisuccinate complexed with PVP and BSA also resulted in inhibition of cytotoxicity. This inhibition was post binding, because binding was increased and lysis was abrogated. Fluidization of K562 target cell membranes caused a slight but insignificant increase in their lysis by NK cells without affecting the binding step. On the other hand, rigidification of K562 membranes decreased the sensitivity of these target cells to lysis. Single cell analysis revealed that this inhibition of NK lysis is post binding, because the frequency of killers was significantly decreased. It was also shown that membrane rigidification of target cells that were programmed for lysis during the lethal hit stage and subsequently separated from effector cells, rendered the programmed cells resistant to killing during the killer cell-independent lysis step. These results demonstrate that fluidization or rigidification of the plasma membrane of either effector or target cells affect different stages of the NK cell-mediated cytolytic events. PMID- 3855930 TI - Phorbol ester-induced lymphocyte adherence: selective action on NK cells. AB - Treatment of human peripheral blood lymphocytes (PBL) with phorbol dibutyrate (PDBU) for 20 to 45 min at 37 degrees C induces adherence of 5 to 30% of the cells to plastic. The adherent cells (pAd) were highly enriched in NK cells on the basis of the following findings: 1) they exhibit high NK and ADCC activity but do not lyse the NK-resistant cell line, Daudi; 2) cytotoxic activity is enhanced by pretreatment with interferon-alpha (IFN-alpha); 3) the surface markers of these cells, as determined with monoclonal antibodies, are consistent with NK cells; and 4) they are enriched with cells morphologically similar to large granular lymphocytes. Conversely, the PDBU-nonadherent cells were substantially depleted of NK cells. The fact that the pAd cells do not lyse the Daudi line and that their NK activity can be further augmented by IFN-alpha would suggest that the pAd are enriched for NK cells rather than changed in their characteristics as a result of the separation procedure. Moreover, no consistent and appreciable modulation of NK activity induced by PDBU was observed. This report therefore demonstrates that PDBU selectively induces NK adherence of NK cells, which may have practical as well as biological implications. PMID- 3855931 TI - Lymphocyte activation by the Fc region of immunoglobulin. I. Role of prostaglandins in the down regulation of Fc fragment-induced polyclonal antibody production. AB - Fc fragment-, subfragment-, and p23-induced polyclonal antibody production are regulated by endogenous and exogenous PGE. Addition of the PG synthetase inhibitor indomethacin (IM) to murine spleen cell cultures resulted in a significant increase in the amount of Ig secreted. Moreover, addition of exogenous PGE to culture resulted in a marked suppression of IgM and IgG secretion. Splenic adherent macrophages and P388D1 cells release PGE upon stimulation with Fc fragments, subfragments, and p23. The inclusion of IM or aspirin in culture was found to abrogate the ability of Fc fragments to induce PGE release from adherent cells. These results suggest a role for PG in immune complex mediated regulation of immune responses. PMID- 3855932 TI - Type II collagen-induced arthritis in mice. III. Suppression of arthritis by using monoclonal and polyclonal anti-Ia antisera. AB - Pretreatment of mice genetically susceptible to type II collagen-induced arthritis (CIA) with monoclonal or polyclonal antisera specific for I region gene products (Ia antigens) suppressed or delayed the onset of CIA, whereas pretreatment with anti-Ia to an irrelevant haplotype was without effect. The humoral response to type II collagen was transiently depressed 14 days after immunization but antibody levels did not differ significantly after 28 days. The peak delayed-type hypersensitivity to type II collagen was unaffected by anti-Ia treatment. Monoclonal antibody of one anti-Ia specificity enhanced both the antibody response and the arthritis incidence in one mouse strain. PMID- 3855933 TI - Glycolipid antigens of human polymorphonuclear neutrophils and the inducible HL 60 myeloid leukemia line. AB - Glycolipid and cell surface carbohydrate antigens of human polymorphonuclear neutrophils (PMN) and of HL-60 myeloid leukemia cells were analyzed with a panel of defined, monoclonal anti-carbohydrate antibodies. Antigenicities of intact PMN, HL-60, and retinoic acid-induced HL-60 (r.a.-HL-60) were studied by flow cytofluorometry. These three cell populations displayed quantitative differences, some of which were induction dependent, in their expression of lactosyl, N acetyllactosaminyl, Y-hapten (Fuc alpha 1----2Gal beta 1----4(Fuc alpha 1--- 3)GlcNAc beta 1----R), and sialosyl-X-hapten (SA alpha 2----3Gal beta 1----4(Fuc alpha 1----3)GlcNAc beta 1----R) specificities. Structures reactive with antibodies specific for long-chain mono-, and di- or tri- alpha 1----3 fucosylated lacto-series glycolipids were also detected. Glycosphingolipids purified from organic extracts of these cells were analyzed to seek information concerning the chemical basis for these surface antigenic differences, to assess the structural and antigenic diversity of PMN and HL-60 glycolipids, and to quantitate chemically and antigenically prominent glycolipids. Binding of monoclonal antibodies to thin-layer chromatograms demonstrated that each of the specificities on intact cells was carried by one or more distinct glycolipids. The abundance of immunoreactive glycolipids in the extracts paralleled the relative staining intensities of the intact cell populations. Several "cryptic" glycolipid antigens, including alpha 2----6 sialosylated structures enriched five to 10-fold in PMN extracts, were not detected on intact cells. Lactosylceramide accounted for two-thirds of the approximately 1.5 X 10(9) glycolipid molecules contained in each PMN. The remaining glycolipid antigens appeared to include structurally diverse fucolipids, fucogangliosides, and neutral and sialosylated glycolipids with Gal beta 1----4GlcNAc beta 1----R terminal core structure. The abundance, diversity, and induction-dependent expression of these structures suggest that they may participate in PMN maturation and function. PMID- 3855934 TI - The embryology of the temporomandibular joint. PMID- 3855935 TI - Bite force discrimination with mandibular movement. PMID- 3855936 TI - The TMJ examination form. PMID- 3855937 TI - Orthodontic/orthopedic treatment of craniomandibular pain dysfunction. Part 4: Unilateral and bilateral crossbite. PMID- 3855938 TI - Biodynamics of the cranium: a survey. PMID- 3855939 TI - Repositioning the mandible anteriorly with fixed composite overlays. PMID- 3855941 TI - A 66-year-old man with limited jaw opening and temporomandibular joint pain, clicking and crepitation. PMID- 3855940 TI - Addition of a temporal silastic and metal implant to a metallic condyle. PMID- 3855942 TI - Osteochondroma of the mandibular condyle. PMID- 3855943 TI - Ca-125 levels in the conditioned media of the gynecological tumor cell lines. PMID- 3855944 TI - [Indications and management of uterine activity stimulation and induction of labor]. PMID- 3855945 TI - [The effect of indomethacin on the implantation and metabolism of blastocysts]. AB - The experiments were performed in order to reveal the role of prostaglandins in the implantation process, using indomethacin, a inhibitor of prostaglandin synthesis. Indomethacin was administered to mice on various days of pregnancy, and then the number of implantation sites and the uterine weight per the number of implantation sites were determined on day 10 of pregnancy. Furthermore [3H]uridine incorporation of blastocysts incubated in the medium containing indomethacin with/without prostaglandin F2 alpha was evaluated in vitro. The results were as follows. Indomethacin reduced the number of implantation sites in the uterus and the uterine weight per the number of implantation sites (embryonal growth). Indomethacin inhibited the [3H]uridine incorporation of blastocysts, but prostaglandin F2 alpha counteracted the effect of indomethacin. These results suggested that prostaglandins play a role in inducing implantation and embryonal growth, and that blastocysts might synthesize prostaglandins. PMID- 3855946 TI - Effects of N-nitrosodimethylamine on tumor susceptibility. AB - Dimethylnitrosamine (DMN) exposure altered the activity of the macrophage and natural killer (NK) cell defense mechanisms against the B16F10 melanoma in B6C3F1 adult female mice as assessed by several immunologic assays. Following 14 daily exposures (i.p.) to 1.5, 3.0, or 5.0 mg DMN/kg, mice were injected (i.v.) with B16F10 melanoma. The incidence and number of lung nodules, determined 18 days after challenge, were decreased in the DMN-exposed animals. The initial observation indicated the mice exposed to 3 mg/kg DMN were afforded the greatest protection. However, when mice exposed to the highest dose of DMN were divided into subgroups of mice with or without ascites, there was a degree protection seen in the 5-mg/kg-treated mice without ascites that was comparable to that of the 3-mg/kg group. The development of ascites is an overt toxic effect reflecting damage to the liver and was frequently associated with exposure to 5 mg/kg DMN. Exposure to DMN produced only slight changes in the activity of splenic NK cells as determined by the cytotoxicity of 51Cr-labelled YAC-1 cells. The activity was significantly increased only in mice exposed to 3 mg/kg DMN and only at effector:target (E:T) ratios of 30:1 and 10:1. Interestingly, the activity of the NK cells was significantly decreased at all E:T ratios in mice exposed to 5 mg/kg that developed ascites. The number of peritoneal exudate cells was decreased, albeit nonsignificantly, in a dose-related fashion. The phagocytic activity, as measured by the uptake of fluorescent latex beads, was increased in a dose related fashion with significance noted at the highest dose of DMN. The role of the macrophage in the increased resistance to the tumor challenge was assessed with bone marrow derived macrophages. The cytostatic activity versus B16F10 tumor cells, as measured by the uptake of 3H-thymidine, was markedly increased in the bone marrow derived macrophages from DMN (5mg/kg) mice when compared to vehicle controls. These results suggest that exposure to DMN alters bone marrow, particularly the differentiation of effector tumoricidal cells, which renders the host more resistant to metastatic tumor formation. PMID- 3855947 TI - Human leukemic models of myelomonocytic development: a review of the HL-60 and U937 cell lines. AB - The human leukemic myeloblast HL-60 and monoblast U937 cell lines have made important contributions to the disciplines of cancer, hematology, and immunology. As sources of leukemic cells, they have been used for the study of neoplasia and therapeutics. As sources of hemic cells, they have been used for biochemical and biological analysis of regulation and differentiation in myelopoiesis. When stimulated with immunomodulatory factors, the cell lines develop properties of host-defense effector cells. They are also a source of cytokines that affect other cell types. PMID- 3855948 TI - Uptake of extracellular calcium by neonatal neutrophils. AB - Neutrophils from human neonates exhibit abnormalities of plasma membrane and cytoskeletal dependent functions such as chemotaxis, deformability, and lectin capping. The uptake of extracellular calcium by neutrophils is a key early event in neutrophil activation and in the optimal performance of these functions. We found that neonatal and control neutrophils acquire extracellular radioactive calcium comparably under most experimental conditions. No differences (P greater than 0.05) were seen between neonatal and control neutrophils following stimulation with soluble sodium fluoride, N-formyl-methionyl-L-leucyl-L phenylalanine, dimethylsulfoxide, and opsonized zymosan particles. However, the uptake of calcium by resting (unstimulated) neutrophils was significantly less (P less than 0.0001) by neonatal cells. The kinetics of calcium uptake by neonatal and control neutrophils were similar both at rest and following stimulation for 15 min with sodium fluoride. Although additional studies will be necessary to completely define the ionic events involved in the chemotaxis of neonatal neutrophils, it seems unlikely that the abnormal mobility of these cells is due simply to an inability of neonatal neutrophils to acquire extracellular calcium in response to cellular stimulation. PMID- 3855950 TI - Diethylstilbestrol effects on host resistance. PMID- 3855949 TI - Monitoring human neutrophil granule secretion by flow cytometry: secretion and membrane potential changes assessed by light scatter and a fluorescent probe of membrane potential. AB - Purified human peripheral blood polymorphonuclear neutrophils (PMN) were incubated at 37 degrees C with the fluorescent membrane potential sensitive cyanine dye di-O-C(5)(3) and exposed to a number of stimulatory agents (N formylmethionylleucylphenylalanine (FMLP), cytochalasin B (cyto B) + FMLP, phorbol myristate acetate (PMA). Flow cytometry was utilized to measure changes in forward light scatter (FS), orthogonal light scatter (90 degrees-SC), and fluorescence intensity of individual cells over time. A saturating (10(-6) M) dose of FMLP lead to a significant increase in the cells' FS without a change in 90 degrees-SC as well as a heterogeneous loss of di-O-C(5)(3) fluorescence. PMA (100 ng/ml) also caused an increase in FS but a uniform loss of dye fluorescence by all cells (apparent depolarization). Cyto B + FMLP produced an increase in FS, a marked loss of 90 degrees-SC, and a uniform loss of fluorescence. Secretion experiments under identical incubation conditions indicated a significantly positive relationship between loss of enzyme markers or cell granularity and orthogonal light scatter (r = 0.959, 0.998, and 0.989 for loss of 90 degrees-SC vs lysozyme, beta-glucuronidase, and granularity index, respectively). Sequential exposure of PMN to PMA and then cyto B + FMLP produced a stepwise shift in scatter parameters (increased FS then loss of 90 degrees-SC). Normalization of membrane potential dye fluorescence changes for the changes in light scatter did not abrogate the heterogeneous fluorescence response of cells to stimulus, indicating that stimulus-induced scatter changes were not responsible for such fluorescence shifts. The data demonstrate that loss of 90 degrees-SC relates closely to secretion of primary granules while changes in FS reflect alterations in cell shape and/or surface/volume ratios that accompany cell activation. Flow cytometric light scatter measurements may yield important information on the extent of prior cell degranulation or activation. PMID- 3855951 TI - The placebo effect. PMID- 3855952 TI - The errant impacted third molar. PMID- 3855953 TI - Esthetic periodontal surgery. PMID- 3855954 TI - Informed consent. PMID- 3855955 TI - A clinico-pathological presentation. Lingual mandibular salivary gland depression. PMID- 3855956 TI - Biological evaluation of the apical dentin chip plug. PMID- 3855957 TI - Apical leakage in relation to radiographic density of Gutta-percha using different obturation techniques. PMID- 3855958 TI - Rat macrophage response to implanted sealer cements. PMID- 3855959 TI - Radiographic evaluation of root canal anatomy of in vivo endodontically treated maxillary premolars. PMID- 3855960 TI - Oroantral communication in periapical surgery of maxillary posterior teeth. PMID- 3855961 TI - Microradiographic assessment of neodentinal bridging following direct pulp capping in human teeth. PMID- 3855962 TI - Corrosion of silver cones in the subcutaneous connective tissue of the rat: a preliminary scanning electron microscope, electron microprobe, and histological study. PMID- 3855963 TI - Transition of apical periodontal cysts to intramedullary osteomyelitis: a clinicopathological analysis. PMID- 3855964 TI - Osseous reactions to three hemostatic agents. PMID- 3855965 TI - Endodontic treatment of an anomalous mandibular molar. PMID- 3855966 TI - Clinical evaluation of Ektaspeed X-ray film for use in endodontics. PMID- 3855967 TI - Human phenol sulfotransferase: correlation of brain and platelet activities. AB - Phenol sulfotransferase (PST; EC 2.8.2.1) catalyzes the sulfate conjugation of phenolic and catechol neurotransmitters and drugs. The human blood platelet has been the most thoroughly studied source of PST because of the possibility that the regulation of the enzyme in this easily accessible tissue might reflect the regulation of PST in the CNS. The human brain and platelet contain at least two forms of PST, forms designated as thermostable (TS) and thermolabile (TL) PST. TS PST catalyzes the sulfate conjugation of micromolar concentrations of phenol and p-nitrophenol and TL PST catalyzes the sulfate conjugation of dopamine and other monoamines. This study was performed to determine whether individual variations in the activities of human platelet TS and TL PST reflect individual variations in cerebral cortical PST activities. PST activities were measured in platelets and in cerebral cortical tissue obtained from 15 patients with epilepsy during clinically indicated neurosurgery. There was a highly significant correlation between the activities of the TS form of PST in cerebral cortex and platelets of these patients (r = 0.940, p less than 0.001), but there was not a significant correlation between activities of the TL form of PST in the two tissues (r = 0.396, p greater than 0.14). In addition to variations in the level of enzyme activity, there are also wide individual variations in the thermal stability of platelet TS PST.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3855968 TI - Acute changes in blood-CSF barrier permselectivity to serum proteins after intrathecal methotrexate and CNS irradiation. AB - Ten children affected by acute lymphoblastic leukaemia without CNS involvement were treated with a CNS prophylaxis protocol. Intrathecal methotrexate and CNS irradiation (60Co) administered at different times both induced an increase in blood-CSF barrier permeability to serum proteins (albumin, IgG, alpha 2 macroglobulin). The relationship between permeability coefficients of proteins was analysed by theoretical porous or vesicular blood-CSF barrier models. The analysis indicated that both therapeutic procedures affect endothelial pinocytosis. An increase in radius of pinocytotic vesicles from 400 to 1500 A seemed the most relevant change. The damage of endothelial barrier permselectivity could be involved in acute and late delayed toxic effects of intrathecal methotrexate and of CNS irradiation. PMID- 3855969 TI - Childhood testicular relapse. PMID- 3855971 TI - Selecting a computer system for your dental practice. PMID- 3855970 TI - Dentists' attitudes about computers. PMID- 3855972 TI - The competencies in managing a primary care practice. PMID- 3855973 TI - When should the general or restorative dentist refer a patient to a periodontist? PMID- 3855974 TI - Attraction and retention of dental clinic patients of a dental school. PMID- 3855976 TI - Sterilization by microwaves. PMID- 3855975 TI - Primary central nervous system lymphoma. AB - A retrospective analysis of 21 cases of primary central nervous system (CNS) lymphoma is reported. All patients presented with a solitary mass in the supratentorial region. None had previously received immunosuppressive therapy. Neuroradiological studies included technetium-99m-pertechnetate brain scanning in eight cases, cerebral arteriography in all 21 cases, and computerized tomography (CT) in 14 cases. The characteristic features were increased uptake in brain scans, mass effect in arteriograms, and marked contrast enhancement on CT scans. Abnormal tumor vessels were occasionally seen on arteriography, and subtraction films were usually required to appreciate tumor stain. All patients underwent craniotomy, and histological studies of the tumors showed a diffuse type of lymphoma in all cases. Immunoglobulin testing was performed in 19 cases and a monoclonal spike was verified in 10, suggesting a B cell origin. All patients were followed until their death except one who was still alive 12 months from onset of symptoms. Therapy included subtotal resection in all 21 cases, whole brain irradiation in six cases, chemotherapy in two cases, and a combination of whole-brain irradiation and chemotherapy in nine cases. Three different forms of chemotherapy were used. The results suggest that chemotherapy is an important addition to subtotal resection and whole-brain irradiation in the treatment of primary CNS lymphoma. PMID- 3855977 TI - Eye injuries: a hazard in the dental office. PMID- 3855978 TI - Protect your hearing. Dental office sounds may be hazardous to your health. PMID- 3855979 TI - Nelson's syndrome: another condition associated with mucocutaneous hyperpigmentation. PMID- 3855980 TI - Diagnosis and treatment of erosive lichen planus: (report of two cases). PMID- 3855981 TI - Necrotizing sialometaplasia of palatal minor salivary glands: a report on 2 cases. PMID- 3855983 TI - Racial predilection of ameloblastoma? A probable answer from Lagos (Nigeria) and Richmond, Virginia (U.S.A.). PMID- 3855982 TI - Salivary composition in diabetic patients. PMID- 3855984 TI - Intraoral blue nevus. Review of the literature and a case report. PMID- 3855985 TI - Tuberculosis initially diagnosed by asymptomatic oral lesions. Report of three cases. PMID- 3855987 TI - The effect of calcitonin on experimental osteoradionecrosis in mice. PMID- 3855986 TI - The peripheral odontogenic fibroma: a retrospective study. PMID- 3855988 TI - Facial pain complaints in the elderly. AB - The incidence of facial pain and mandibular dysfunction was studied in a population of elderly, middle-class Americans (median age, 71 years) using a self report questionnaire. The questionnaire was mailed to 839 volunteer subjects of both sexes; responses were obtained from 562 (67%) individuals. Results showed that 536 respondents (95.4%) were free of facial pain and that only 25 (4.4%) had temporomandibular joint pain. Joint sounds and teeth clenching and grinding were associated with facial pain in 50% of those who reported this combination. PMID- 3855989 TI - The correlation of temporomandibular joint sounds with joint morphology in fifty five autopsy specimens. AB - Joint sounds from 55 fresh temporomandibular joint autopsy specimens were correlated with the macroscopic examination of joint morphology. Fifty-eight per cent of the joints were silent. Two thirds of these showed normal superior disc positions and remodeled articular surfaces, whereas one third exhibited anterior disc displacement. Twenty per cent of the joints elicited clicking and showed anterior disc displacement. Twenty-two per cent of the joints elicited crepitation and exhibited mostly arthrosis of the articular surfaces and perforation of the discs. Our results confirm previous statements that clicking and crepitation may be looked upon as signs of abnormal joint morphology, clicking indicating anterior disc displacement and crepitation usually indicating arthrosis. Absence of sound alone, however, should not be accepted as an indication of a normal joint. PMID- 3855991 TI - Case 52: Multiloculated radiolucency of the left mandible. PMID- 3855990 TI - Autologous transfusion in orthognathic surgery. AB - The principles of autologous transfusion are discussed. Autologous blood can be transfused for about the same cost as conventional donor blood, but there is decreased risk of the transmission of infectious disease or the formation of antibodies directed against red-cell antigens. Intraoperative blood replacement requirements for almost all orthognathic surgical procedures may be met by autologous liquid storage according to the schedule provided. PMID- 3855992 TI - Gaucher's disease affecting the mandible. AB - A case of Gaucher's disease affecting the left body of the mandible is presented. Dentists can recognize this uncommon disease through the medical history of the patient, the presence of characteristic Gaucher cells on biopsy of the lesion, and decreased serum levels of the enzyme glucocerebrosidase. PMID- 3855993 TI - Intramuscular hemangioma of the tongue. AB - A case of intramuscular hemangioma of the tongue originally suspected to be an epidermoid or dermoid cyst was presented. The correct diagnosis was discovered during surgery, when uncontrollable bleeding and the results from a frozen section revealed the true nature of the lesion. PMID- 3855994 TI - A technical note on placement of the mandibular staple bone plate. AB - The technical modifications suggested for placement of the mandibular staple bone plate include the positioning of the acrylic template at the onset of the procedure and the insertion of an excess amount of Steri-drape intraorally at the time the patient is draped. The assistant can then manipulate the acrylic template and director rods from a sterile field. The perception of when the drill bit has completely traversed the alveolar bone is improved by relieving the acrylic template at the site at which the transosteal pins penetrate into the oral cavity. The advantages of these modifications are three-fold: the entire surgical team remains sterile, the risk of contaminating the surgical field is reduced, and the procedure is rendered more time-efficient. PMID- 3855995 TI - Functional therapy for fractures of the condyloid process in adults. PMID- 3855996 TI - Pediatric orthodontics: quality and sufficiency of treatment. PMID- 3855997 TI - Longitudinal radiographic evaluation of the progress of caries under sealants. PMID- 3855998 TI - Radiographic observation of tooth protection from demineralization by sealants. PMID- 3855999 TI - Use of lorazepam as premedication for apprehensive children. PMID- 3856000 TI - Partial pulpotomy following complicated crown fracture in permanent incisors: a clinical and radiographical study. PMID- 3856001 TI - The matrix band segment for Class II restorations. PMID- 3856002 TI - Controversies in periodontal microbiology. PMID- 3856003 TI - Prepubertal periodontitis: report of a generalized case involving the primary dentition. PMID- 3856004 TI - Epidermal nevus syndrome: report of a case with oral involvement. PMID- 3856005 TI - An evaluation of tricalcium phosphate implants in human periodontal osseous defects of two patients. AB - This study evaluated the use of tricalcium phosphate (TCP) ceramic implant material in periodontal osseous defects. Thirteen defects in two patients were treated with mucoperiosteal flaps and placement of TCP. The defects were evaluated clinically and radiographically utilizing standardized probe placement and radiographic technique. Clinically, there was a mean probing pocket reduction of 4.5 mm as a result of a mean gain of clinical probing attachment level of 2.0 mm and a mean gingival recession of 2.5 mm. Radiographically, there was a mean "fill" of 1.8 mm. Six teeth were removed by block biopsy for histologic analysis, three at 3 months, one at 6 months and two a 9 months. The TCP particles were well tolerated and encapsulated by fibrous connective tissue, but the particles did not stimulate new bone growth. The junctional epithelium ended 1.62 mm coronal to the apical extent of a reference notch placed at the base of the defect. Although new cementum was observed, there was limited evidence of new attachment. PMID- 3856007 TI - Collagen sponge as a topical hemostatic agent in mucogingival surgery. AB - Hemorrhage from palatal donor sites during periodontal mucogingival surgery was controlled by application of Collastat absorbable hemostatic sponges. The use of collagen sponges was evaluated in 20 free-graft cases. In contrast to microfibrillar collagen, which is normally delivered as clumps of material, a Collastat sponge was applied as a single piece that maintained structural integrity even when wet and was easy to maneuver into place. The highly porous sponges conformed to the wound, absorbed fluid and produced consistently reliable hemostasis with no secondary bleeding. By stemming the seepage of blood into the throat, patient safety and comfort were improved. The sponges were left on the wounds and removed at the 1-week postoperative visit, revealing well-formed granulation tissue. Healing proceeded normally with no evidence of infection, tissue reaction, or other adverse effects. PMID- 3856006 TI - A fused central incisor. Periodontal considerations in comprehensive treatment. AB - This report details the treatment of a permanent central incisor fused to a supernumerary tooth. The level of fusion was first determined by radiographs, but surgical visibility indicated a more extensive fusion. The two roots were separated, and the supernumerary tooth was removed. At 10 weeks postoperatively, orthodontic treatment was instituted, bringing the retained tooth through the healing socket left by the supernumerary, and into contact with the interdental septum. After endodontic treatment and splinting, a periodontal re-entry procedure was necessitated by the persistence of inflammation caused by incomplete removal of the furcation-like area between the fused teeth. The improved periodontal prognosis of this case at 1-year follow-up can be attributed to careful postsurgical evaluation and subsequent removal of this plaque retentive area. PMID- 3856008 TI - Properties of interocclusal registration materials. PMID- 3856009 TI - A comparison of Chromascan and spectrophotometric color measurements of 100 natural teeth. PMID- 3856011 TI - Quick technique for construction of a surgical obturator. PMID- 3856010 TI - A study of the position of the parotid papilla relative to the occlusal plane. AB - This study determined that a fairly constant relationship exists between the parotid papilla and the occlusal plane. An additional finding was that this relationship may not be the same on each side of the mouth. Race and sex differences were not significant. PMID- 3856012 TI - Rebasing metal-based complete mandibular dentures. AB - A comprehensive rationale and technique is presented for rebasing a metal-based mandibular complete denture. It is economically practical to rebase the metal based complete denture if it meets the criteria for rebasing. No more chair time is required for replacing a metal base than for an acrylic resin base. The only additional cost is for construction of the new metal base in the laboratory. PMID- 3856014 TI - Modification of Hanau H-2 articulator to accept the earpiece face-bow. AB - A time-saving and economic method of fitting the centric lock with an auditory pin for older Hanau H-2 articulators was described. The entire process takes approximately 10 minutes when done by an experienced machinist. PMID- 3856013 TI - Denture flange modification for autopolymerizing and heat-processed resilient denture liners. PMID- 3856015 TI - Effect of restoration quality on periodontal health. PMID- 3856016 TI - Pin-retained reinforced zinc oxide-eugenol temporary restorations. PMID- 3856017 TI - Technique to record the location of the kinematic hinge axis without tattooing. PMID- 3856018 TI - An instrument to facilitate the placement of interarch elastics. PMID- 3856019 TI - Vibrating spatula for plaster. PMID- 3856020 TI - Stability of gingival crest after surgery and before anterior crown placement. PMID- 3856021 TI - Linear distortion of acrylic resin. PMID- 3856022 TI - Custom-matrix technique for composite resin restoration of diastemas. PMID- 3856023 TI - The ala-tragus line in complete denture prosthodontics. PMID- 3856024 TI - Alternative obturation for the maxillectomy patient with severely limited mandibular opening. PMID- 3856025 TI - Acetic acid vapor levels associated with facial prosthetics. AB - The use of Silastic Medical Adhesive Type A in the fabrication of facial prostheses may cause health hazards to the patient and the operator because of acetic acid emissions. Caution must be exercised to remove acetic acid vapors from the air and unliberated acetic acid from material applied directly to the skin. PMID- 3856026 TI - Evaluation of condylar position from temporomandibular joint radiographs. AB - This investigation evaluated the accuracy of three different transcranial TMJ radiographic records of condylar position and joint space dimension. In addition, the study evaluated how reliably observers determined condylar position and joint space dimensions from the radiographs. The results of this investigation support the following conclusions. The classification of condylar position is not the same at different sagittal locations within a TMJ. Skull position and radiographic projection must be identical if joint space measurements from serial radiographs are to be compared. The actual joint space dimensions and the anatomic anterior/posterior position of the condyles in the glenoid fossae cannot be accurately recorded by the radiographic techniques used in this investigation. Condyle/fossa relationships cannot be classified reliably by subjective evaluation of TMJ radiographs. PMID- 3856027 TI - Restoration of Class IV and VI defects in anterior teeth with an unfilled resin. AB - The etched resin technique with unfilled acrylic resin has been successful for Class IV and VI defects on anterior incisor teeth and has proven more useful than alternatives in the immediate treatment of traumatized teeth. The advantages of this approach are ease of operation, excellent retention, conservative tooth preparation, excellent esthetics, lower cost to patient, reduced additional insult to recently traumatized teeth in stabilizing them, stable color, and lack of trauma to opposing teeth (Fig. 10). PMID- 3856028 TI - Maxillary sinusitis as a differential diagnosis in temporomandibular joint pain dysfunction syndrome. AB - Maxillary sinusitis may be diagnosed incorrectly as TMJ pain-dysfunction syndrome because of a similarity of signs and symptoms. Both conditions can manifest with headache, facial pain radiating to the ear and the maxillary teeth, preauricular pain, and pain in the buccal vestibule posterior and superior to the maxillary tuberosity. It can be concluded that (1) more consideration should be given to sinus disturbances as a differential diagnosis in TMJ pain-dysfunction syndrome, (2) it may be preferable to refer some patients with TMJ pain to a medical center where specialists in dentistry, otolaryngology, neurology, rheumatology, and psychiatry can evaluate the patient, and (3) TMJ pain-dysfunction syndrome should be evaluated and treated by a dentist experienced in management of this disorder. PMID- 3856029 TI - Identification of leucocytes within the human chorion laeve. AB - Occasional macrophages and granulocytes have been detected within the cytotrophoblast layer of the chorion laeve in normal term placentae. It is clearly important to identify these leucocytes in studies of antigen expression by trophoblastic populations within the amniochorion. The relevance of these observations to any immunocompetent interactions between maternal and fetal cells through the chorion laeve remains to be established. PMID- 3856030 TI - Properties of glass ionomer luting cements. PMID- 3856031 TI - Occlusal adjustment: an appraisal. PMID- 3856032 TI - Personality and staff privileges. PMID- 3856033 TI - Ethics and technology. PMID- 3856034 TI - Three-year experience with gastric stapling for morbid obesity. PMID- 3856035 TI - Cardiac sarcoidosis. PMID- 3856036 TI - Panic disorder: fear disguised as medical illness. PMID- 3856037 TI - Discrimination between normal, hyperplastic and malignant human prostatic tissues by enzymatic profiles. AB - A relative enzymatic index has been developed which differentiates normal, hyperplastic (BPH) and malignant human prostatic tissues. Enzymatic activities have been calculated at Vmax conditions in 10 normal, 14 BPH and 11 carcinoma samples. Five enzymes have been assayed: 1) 5 alpha-reductase, 2) 3 alpha hydroxysteroid oxidoreductase, 3) 3 beta-hydroxysteroid oxidoreductase, 4) 17 beta-hydroxysteroid oxidoreductase and 5) acid phosphatase. The following observations were made when comparing individual enzymatic activities between the 3 tissue groups: 1) mean 5 alpha-reductase activity was lower in carcinoma than in both normal prostate and BPH (p less than 0.05), 2) mean 3 alpha hydroxysteroid oxidoreductase and 3 beta-hydroxysteroid oxidoreductase activities were greater in carcinoma than in BPH (p less than 0.05) and 3) mean acid phosphatase activity was higher in BPH than in both normal prostate and carcinoma (p less than 0.01). The absolute enzymatic activities were then expressed as relative activities by dividing each absolute value by the mean value for that enzyme in normal prostatic tissue. Relative enzymatic activities were used to derive the ratio: (Formula: see text) The mean value of this ratio was statistically different in normal, BPH and carcinoma tissue (p less than 0.01). The mean value was 3.6 times higher in BPH than in normal tissue, and was 3.8 times higher in normal tissue than in carcinoma. This suggests that BPH and carcinoma diverge in opposite directions biochemically from normal prostatic growth and supports histologic evidence that the 2 neoplastic conditions have a different pathogenesis rather than being part of the same disease spectrum. PMID- 3856038 TI - Primary thrombocythemia and acute leukemia. PMID- 3856040 TI - H.E.L.P. PMID- 3856039 TI - Loa loa. An unusual case of chronic urticaria and angioedema in the United States. PMID- 3856041 TI - Combined cytotoxicity effect of hyperthermia and anthracycline antibiotics on human tumor cells. AB - The effects of temperature on the anthracycline antibiotics-induced cell kill of DND-1A human malignant melanoma (MM) and DND-39A Burkitt's lymphoma (BL) cell lines were studied by means of a clonogenic assay. The two cell lines differed in sensitivity when exposed to heat: The MM cells were unaffected by hyperthermia (42 degrees C), whereas BL cells were sensitive to this temperature. With the MM cells, hyperthermia potentiated the cytotoxic effects of doxorubicin (ADM), daunorubicin, mitoxantrone (DHAD), and quelamycin but did not enhance that of aclacinomycin (ACM). Conversely, the exposure of cells to the anthracycline compounds at 0 degree C resulted in almost complete disappearance of cell kill effects except with ACM; ACM retained substantial cell kill effects even at the given low temperature. For BL cells, ADM- or DHAD-induced cell lethality was also potentiated by hyperthermia; ACM produced only additive cell kill. At 0 degree C, ACM's effects virtually disappeared. These data indicate that human tumor cell lines have a substantial variety in heat sensitivity and that not every anthracycline antitumor agent is potentiated by temperature. ACM's thermoresponse is unique among anthracycline antibiotics studied. Additionally, it was shown that normothermic cell kill by ADM was not affected by hyperthermic preheating; however, preheating of appropriate duration produced important influence on subsequent hyperthermic ADM-induced cell kill. PMID- 3856042 TI - Primary melanoma cells of the vertical growth phase: similarities to metastatic cells. AB - Three primary and 16 metastatic melanoma cell lines were established from primary and metastatic lesions of 4 patients with malignant melanoma. Comparison of metastatic melanoma cells with cells of the vertical growth phase (VGP) or late primary melanoma from the same individual revealed, generally, a shorter population-doubling time, growth to a higher cell density, higher tyrosinase activity, and more pigmentation in metastatic cells. Conversely, primary and metastatic melanoma cells had similar morphology, plating efficiency, and tumorigenicity in nude mice. Karyotypic analysis revealed clonality and nonrandom abnormalities in chromosomes 1, 6, and 7 in cells of the primary and metastatic lesions of the 3 patients studied. Few differences were found in the expression of melanoma-associated antigens on short-term and long-term cultured cells by tests with monoclonal antibodies in mixed hemadsorption assays, flow cytometry, and radioimmunoassays. Our results indicate that cells cultured from the VGP but not from the radial growth phase of primary melanoma are similar to metastatic melanoma cells. PMID- 3856043 TI - Inflammatory breast cancer: the experience of the surveillance, epidemiology, and end results (SEER) program. AB - The current status of inflammatory breast cancer (IBC) among U.S. females was reviewed with the use of data abstracted from medical records of patients diagnosed with breast cancer between 1975 and 1981 in nine geographic areas covered by the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program. Patients were selected on the basis of reported clinical and pathologic features of IBC and were divided into 3 groups: I) both clinical and pathologic features of IBC; II) clinical features without pathologic confirmation; and III) pathologic evidence only. The age distribution of pathologically defined IBC, in general, showed younger ages than those for other breast cancers in both the white and black populations. Further analysis was restricted to white females due to the relatively small numbers of black and other nonwhite patients with IBC. The disease presentations of both clinically and pathologically defined IBC were similar with regard to the likelihood of the presence of metastases at initial staging. Survival was evaluated by comparison of patients with nonmetastatic (MO) disease. Three years after diagnosis, the relative survival rates among patients in groups I, II, and III were observed to be 34, 60, and 52%, respectively. Survival of patients with all other types of breast cancer was 90% at 3 years. The management of IBC appeared to differ from the treatment of other forms of breast cancer; chemotherapy was given more frequently as the first course of cancer-directed therapy in white SEER females with evidence of MO IBC compared with the group with MO non-IBC. When all possible combinations of initial therapy were considered, the treatment for IBC was more variable than the treatment for non-IBC. PMID- 3856044 TI - Dietary relationships with fatal colorectal cancer among Seventh-Day Adventists. AB - Associations between fatal colon or colorectal cancer and frequency of use of meat, cheese, milk, eggs, green salad, and coffee, as well as percent desirable weight, are described with the use of 21 years of follow-up for 25,493 white California Seventh-Day Adventists. Associations are presented in terms of relative risk (RR) of colorectal cancer for heavy or light exposure versus rare exposure. There were no clear relationships evident between colon or rectal cancer and meat, cheese, milk, or green salad use. Egg use was positively associated with risk of fatal colon cancer in both males (RR = 1.6) and females (RR = 1.7). Coffee use was positively associated with both colon and rectal cancer mortality in males and females, particularly for colon cancer during the last 11 years of follow-up (male RR = 3.5; female RR = 1.9). Overweight (percent of desirable weight greater than or equal to 125) was associated with an increased risk of fatal rectal cancer in both sexes combined (RR = 2.8) and colon cancer in males only (RR = 3.3). Furthermore, eggs, coffee, and overweight appear to be independently associated with risk of both colon and colorectal cancer. These three factors may explain a substantial portion of the colorectal cancer mortality differential between Adventists and U.S. whites (62% for males; 30% for females). PMID- 3856045 TI - Body mass index as a predictor of cancer in men. AB - In this prospective study 8,006 Japanese men, age 45-68 years, were examined between 1965 and 1968. Their height and weight were measured and they were asked for their weight at age 25. After a surveillance period of almost 15 years, 646 incident cases of the following cancers were identified: 104 stomach, 101 colon, 101 lung, 96 prostate, 63 rectum, and 181 cancers of other sites. Body mass index (BMI = weight/height2) at time of examination and weight gain since age 25 were positively associated with an increased risk for colon cancer in subjects age 55 or older at the time of examination. No other cancer had a significant positive association with either BMI at the time of examination or with weight gain since age 25. In contrast, a low BMI at examination and weight loss since age 25 were associated with an increased risk for stomach cancer, whereas only weight loss since age 25 was associated with an increased risk for lung cancer. These two cancers accounted for the overall significant association of weight loss with total cancer incidence. PMID- 3856046 TI - Mortality among a cohort of U.S. cadmium production workers--an update. AB - A previous retrospective mortality study of 292 U.S. cadmium production workers employed for a minimum of 2 years showed increased mortality from respiratory and prostate cancer and from nonmalignant lung disease. To examine further the mortality experience of these workers, investigators from the National Institute for Occupational Safety and Health extended the study to include 602 white males with at least 6 months of production work in the same plant between 1940 and 1969. Vital status was determined through 1978, which included the addition of 5 years to the original follow-up. Cause-specific mortality rates for seven causes of death potentially related to cadmium exposure were compared between the overall cohort and U.S. white males and between subgroups. Mortality from respiratory cancer and from nonmalignant gastrointestinal disease was significantly greater among the cadmium workers than would have been expected from U.S. rates. All deaths from lung cancer occurred among workers employed for 2 or more years. A statistically significant dose-response relationship was observed between lung cancer mortality and cumulative exposure to cadmium. A 50% increase in lung cancer mortality, which was not statistically significant, was observed even among workers whose cumulative exposure to cadmium was between 41 and 200 micrograms/m3 over 40 years. Since the previous investigation, no new deaths from prostate cancer and no excess of deaths from nonmalignant respiratory disease have been observed. PMID- 3856047 TI - Detection of monoclonal antibodies for tumor diagnosis with the use of inhibition of micro-enzyme-linked immunosorbent assay. AB - A micro-enzyme-linked immunosorbent assay (ELISA) test and an ELISA inhibition test were developed and used to detect 4 monoclonal antibodies potentially useful for serodiagnosis of cancer. The 4 antibodies used in conjunction detected 73% of 71 sera from cancer patients and 8% of 42 sera from normal persons. Separately, the 4 antibodies reacted to tumors from various sites such as lung, breast, colon, stomach, and ovary. The ELISA inhibition assay may be useful for detecting culture supernatants reactive against tumor-associated serum antigens. Eventually, a panel of monoclonal antibodies detecting various tumors may be obtainable. PMID- 3856048 TI - Response to doxorubicin of cultured normal and cancerous human mammary epithelial cells. AB - Epithelial cells were isolated and cultured from a number of human mammary specimens of both cancerous and noncancerous origin. Doxorubicin (Dx) sensitivity was measured at second passage with the use of a highly efficient clonogenic assay. For 23 different tumor specimens derived from patients without previous chemotherapy, the drug concentrations required to kill 50% of the cells varied approximately 35-fold. In contrast, for 11 tumor specimens from patients who relapsed after regimens containing Dx, the drug concentration for 50% survival varied only fivefold and the dose-response curves for these specimens clustered at the more resistant end of the spectrum. A wide range of sensitivities was also observed among 13 noncancerous mammary specimens; however, tumor tissue and noncancerous tissue from the same donor were similar. When cultures were subjected to drug incubation periods of 1 and 4 hours, dose-response curves were superimposable when plotted as a function of drug concentration multiplied by time. PMID- 3856049 TI - Natural killer inhibitory substance produced by the peritoneal cells of patients with ovarian cancer. AB - Peritoneal cells obtained from 8 patients with minimal residual ovarian cancer produced a substance during in vitro culture that markedly inhibited the expression of natural killer (NK) cell-mediated lysis. Its molecular weight was less than 2,000, the same size as the NK-inhibiting substance (NK-IS), a similar NK-suppressive molecule produced by the peritoneal cells of rats. Human NK-IS suppressed the expression of antibody-dependent cell cytotoxicity as well as NK lysis, but it had no effect on erythrocyte-rosette formation and was not cytotoxic to peripheral blood lymphocytes or cell fractions enriched for large granular lymphocytes. NK-IS inhibited lysis mediated by interferon-activated lymphocytes and completely prevented NK activation when used in a preincubation. During intraperitoneal immunotherapy with Corynebacterium parvum, an agent that can activate peritoneal cytotoxic effectors, the production of NK-IS by peritoneal cells decreased considerably. Human peritoneal cells produce an NK-IS similar to the peritoneal cells of rats, and this material may create an environment within the peritoneal cavity that is permissive to the growth of NK sensitive tumor cells. PMID- 3856050 TI - Risk factors for male breast cancer. AB - To investigate risk factors in male breast cancer, a case-control study of 52 histologically diagnosed cases and 52 controls--matched for age, race, marital status, and hospital--was conducted in 5 U.S. metropolitan areas. Cases were significantly more likely to be Jewish than were the controls, supporting earlier suggestions of an increased risk in Jewish males. A significant association of male breast cancer with mumps infections at age 20 years or older, along with the possible association with antecedent testicular injury and the excess frequency of mumps orchitis among cases, suggests that testicular factors may be important in the development of breast cancer among males. An increased frequency of breast cancer among persons who have worked in blast furnaces, steel works, and rolling mills is of interest because of the possible testicular effect of high environmental temperatures. The observed association between breast cancer and a prior history of swollen breast is difficult to interpret because of potential recall bias, and a possible relationship with military service needs further confirmation. PMID- 3856051 TI - Development of resistance to MOPC-315 plasmacytoma after intralesional and intraperitoneal melphalan therapy of tumor-bearing BALB/c mice. II. Enhancement of in vitro cell-mediated cytotoxicity by combined chemotherapy-immunotherapy. AB - As previously reported, tumor-bearing BALB/c mice can be cured by split-course melphalan therapy, with 40-60% of the treated animals developing resistance to subsequent challenge with viable MOPC-315. The present study deals with the identification of effector-cytotoxic cells that may be developed as a result of chemotherapy-induced tumor regression and their possible potentiation by active, specific immunization with melphalan- and glutaraldehyde-treated MOPC-315 plasmacytoma cells. The cytotoxic potential of spleen-derived lymphocytes in treated animals could be demonstrated only after in vitro sensitization against mitomycin-treated MOPC-315 cells. Lymphocyte-mediated cytotoxicity, as measured against syngeneic 51Cr-labeled MOPC-315, could be detected in melphalan-cured animals and was significantly enhanced by active immunization as compared to the cytotoxicity seen in normal and tumor-bearing mice. With the use of M109 syngeneic, unrelated tumor cells as control targets in the assay, no cytotoxicity was detected. Macrophage cytotoxicity was not significantly enhanced in any of the treatment groups described, with these assays performed 6-8 weeks following treatment and cure. When in vitro killing of MOPC-315 targets was tested with the use of peritoneal macrophages harvested shortly following cure of ascitic tumor by ip injected melphalan, the cytotoxic response was significantly enhanced. In conclusion, following chemotherapy-mediated cure of established MOPC-315 tumors, splenic lymphocytes exhibited enhanced antitumor cytotoxicity, which was further augmented by active immunization. Macrophage activation, as measured by direct cytotoxicity against MOPC-315 targets, was found to occur locally and early following the event of melphalan-induced tumor regression. PMID- 3856052 TI - Increase in tumor vascular area due to increased blood flow by angiotensin II in rats. AB - For further elucidation of the microhemodynamics in tumor tissue, the "vascular level," percentage of the vascular area to tissue area, was measured in DONRYU rats. Changes in the vascular level due to angiotensin II were analyzed by a point-counting method in normal and tumor tissues within a rat transparent chamber. The vascular level in normal subcutis changed from 21.8 to 18.6% when the mean arterial pressure was elevated from 102.3 to 155.9 mmHg. The coefficient of change due to angiotensin II was 0.85. The vascular level in tumor tissue was distributed inhomogeneously from 0 to 48.5% with an average of 19.7%. It increased to 33.9% (range: 8.7-57.6%) with an elevation of the mean arterial blood pressure from 103.5 to 150.8 mmHg. The coefficient of change due to angiotensin II was 2.08 in tumor tissue. Moreover, the tumor vascular level increased at a higher rate in the areas with a lower vascular level. PMID- 3856053 TI - Effects of molybdenum and tungsten on mammary carcinogenesis in SD rats. AB - Virgin female rats of the SD strain were fed ad libitum a nutritionally adequate semipurified diet and demineralized water (groups 1 and 2), or the same diet with 10 ppm molybdenum (group 3) or 150 ppm tungsten (group 4) added to the drinking water. The animals in groups 2-4 received a single iv injection of 5 mg N-nitroso N-methylurea (NMU; CAS: 684-93-5)/100 g body weight at 50 days of age. One hundred and twenty-five days after the NMU treatment, group 2 exhibited a 50.0% incidence of mammary carcinoma. Group 4 exhibited a significant increase in carcinoma incidence (79.2%) and the value for group 3 (45.5%) was not significantly different from that of group 2. The carcinoma incidence of group 3 (50.0%) was significantly lower than that of group 2 (90.5%) or group 4 (95.7%) 198 days after NMU treatment. PMID- 3856054 TI - Retardation of prostate tumor progression in the Noble rat by 4-methyl-4-aza steroidal inhibitors of 5 alpha-reductase. AB - The effect of 4-methyl-4-aza-steroidal inhibitors of 5 alpha-reductase has been evaluated on tumor growth in the Noble rat model of prostatic adenocarcinoma. The growth characteristics of the tumor line 2Pr-121D(1) were consistent with heterogeneity of cell types, composed of androgen-sensitive and androgen insensitive malignant cells. Both sodium 4-methyl-3-oxo-4-aza-5 alpha-pregnane-20 (s)-carboxylate and 17 beta-N,N-diethylcarbamoyl-4-methyl-4-aza-5 and 17 beta-N,N diethylcarbamoyl-4-methyl-4-aza-5 alpha-androstan-3-one significantly retarded tumor progression. Each agent increased tumor volume doubling time by approximately 62%. On the basis of their similarities to female rats and male castrate group, in terms of growth rate, tumor doubling time, and histologic characteristics, the treatments with the 4-methyl-4-aza-steroids appeared to produce effects common to both castration and estrogenization (chronic administration of pharmacologic doses of estrogen). The failure of 5 alpha reductase inhibitors to be active as antiprostatic agents in vivo has hitherto detracted from their use of therapeutic agents. Present studies demonstrate that the 4-methyl-4-aza-steroidal inhibitors of 5 alpha-reductase may represent an alternative to orchiectomy and chronic estrogen therapy for the management of the hormone-dependent phase of prostate cancer. PMID- 3856055 TI - Toxic chemicals in marine sediment and biota from Mukilteo, Washington: relationships with hepatic neoplasms and other hepatic lesions in English sole (Parophrys vetulus). AB - High prevalences of idiopathic liver lesions, including 7.5% hepatic neoplasms (e.g., hepatocellular and cholangiocellular carcinomas) and 16.7% foci of cellular alteration (putative preneoplastic hepatic lesions), were found in English sole (Parophrys vetulus) from waters near Mukilteo, a small community on Puget Sound in Washington State. Sediments from the sampling sites contained particularly high concentrations of aromatic hydrocarbons. Substantially lower concentrations of these compounds were found in sediments from another Puget Sound (reference) site in which fish showed no evidence of hepatic neoplasms or foci of cellular alteration. Stomach contents from the fish at Mukilteo contained substantially higher concentrations of the chemicals than did stomach contents of fish from the relatively uncontaminated site. High concentrations of metabolites of aromatic compounds were measured in the bile of fish from Mukilteo. These findings support previously observed relationships between sediment chemicals (e.g., aromatic hydrocarbons) and high prevalences of liver lesions in English sole from Puget Sound. In addition, a dietary route of uptake by English sole of environmental chemicals, including known carcinogens, was documented. PMID- 3856056 TI - Chemoprotective effect of progesterone on carcinoma formation in mice and rats. AB - The protective effect of progesterone on the development of chemically induced carcinomas (squamous cell carcinomas in mice and basal cell carcinomas in rats) by 3-methylcholanthrene [(MCA) CAS: 56-49-5] was studied. Progesterone administration decreased the average number, size, and weight of carcinomas by 45 50% as compared to those of tumors treated with MCA alone at any time interval. DNA radioactivity and autoradiographic studies with the use of [3H]thymidine showed an inhibition of DNA synthesis in the neoplastic cell nuclei following a concomitant administration of progesterone and MCA (18.4%) as compared to the DNA synthesis following administration of MCA alone (35.0%). Electron microscopic and cytologic observations revealed salient ultrastructural findings following progesterone administration, with advanced cytolysis, tumefied mitochondria, large populations of secondary lysosomes, and autophagic formations; also, cell differentiation tended to be of a glandular-adenomatoid type following progesterone and MCA administration as compared to the characteristic squamous cell and basal cell carcinomas after treatment with MCA alone. In addition, scanning electron microscopic observations revealed advanced cytolytic areas with several disintegrated neoplastic cells and cell debris intermingled with red blood cells, following progesterone and MCA administration. The present findings demonstrate that progesterone in pharmacologic doses exerts important chemoprotective effects on carcinoma formation, possibly by interfering with MCA metabolism and inhibiting DNA synthesis in the epidermal neoplastic cells, and thus plays an important role in tumorigenesis. PMID- 3856057 TI - Comparative tumor-promoting activities of phenobarbital, amobarbital, barbital sodium, and barbituric acid on livers and other organs of male F344/NCr rats following initiation with N-nitrosodiethylamine. AB - Tumor-promoting abilities of four barbiturates, phenobarbital [(PB) CAS: 50-06 6], amobarbital [(AB) CAS: 57-43-2], barbital sodium [(BB) CAS: 144-02-5], and barbituric acid [(BA) CAS: 67-52-7], on the development of neoplasms in livers and other organs of rats following initiation with N-nitrosodiethylamine [(DENA) CAS: 55-18-5] were compared. Four-week-old F344/NCr male rats were given a single ip injection of 75 mg DENA/kg body weight. Beginning 2 weeks later, they were given either tap water (group 1) or drinking water containing 500 ppm of PB (group 2), the sodium salt of BB (group 3), AB (group 4), or BA (group 5) for the remaining experimental period. Control groups (groups 6-10) received an ip injection of saline alone and 2 weeks later were given either tap water or drinking water containing barbiturates as listed above. Animals were sacrificed at either 52 weeks or 78 weeks. None of the barbiturates altered the growth and survival of animals. PB and BB increased liver weights and significantly enhanced the development of hepatocellular foci and hepatocellular adenomas at 52 weeks and hepatocellular foci, hepatocellular adenomas, and trabecular carcinomas at 78 weeks in DENA-treated rats. No such enhancing effects were observed with AB or BA. PB or BB did not significantly enhance the incidence of nonhepatic tumors at 52 weeks. However, at 78 weeks BB significantly enhanced the development of renal tubular adenomas and carcinomas, while PB enhanced the development of thyroid follicular cell neoplasms in DENA-treated rats. These results clearly showed that barbiturates exhibited structure-promoting activity relationships and that their promoting abilities were not restricted to liver alone. Substitution of both hydrogen atoms at the C-5 position of the pyrimidine ring by alkyl or aryl groups appears to be essential but not sufficient for tumor-promoting activity of barbiturates. PMID- 3856058 TI - Sunlight suppressing rejection of 280- to 320-nm UV-radiation-induced skin tumors in mice. AB - Repeated exposure of female C3H/HeNCR- mice to sunlight prevented the normal immunologic rejection of a UV-induced tumor. This systemic immunologic alteration was transferred to syngeneic lethally X-irradiated animals with lymphoid cells from mice exposed to sunlight. The lymphoid cells also were able to suppress the capacity of lymphoid cells from normal animals to reject a UV-induced tumor. The 295- to 320-nm wave band appeared to be responsible for this immunosuppressive effect of sunlight because suppression was prevented by filtration of the radiation through Mylar and by application of a sunscreen containing para aminobenzoic acid. These observations may have importance in understanding the pathogenesis of sunlight-induced skin cancer in humans. PMID- 3856059 TI - Spontaneous tumor incidence in female brown Norway rats after lifelong diets high and low in linoleic acid. AB - High linoleic acid (C18:2) (group I; 17.7 cal%) and low C18:2 (group II; 3.3 cal%) diets were given to groups of inbred Brown Norway virgin female rats (100 animals/group), during their whole life-span. A total of 140 tumors were found in group I and 123 tumors in group II; the median survival times of the 2 groups were 124.2 and 118.5 weeks, respectively. Total spontaneous tumor incidence and median survival times were not significantly different. However, significant differences were found in the incidences of some specific tumors: The numbers of reticuloendothelial tumors and adrenocortical carcinomas were significantly higher in the group of animals receiving the low-C18:2 diet. A high incidence of tumor multiplicity, however, resulted in a significantly greater number of mammary tumors in the high-C18:2 diet group. PMID- 3856060 TI - Coffee and methylxanthines and breast cancer: a case-control study. AB - A dietary case-control study based on 818 newly diagnosed breast cancer (BC) patients was conducted in Israel between 1975 and 1978. The role of coffee and total methylxanthine intake from coffee, tea, cola, chocolate, and cocoa drinks was evaluated in the BC patients as compared to that in two matched control populations [surgical controls (SC) and neighborhood controls (NC)]. Because it has been suggested that caffeine enhances mammary carcinogenesis in rats fed high polyunsaturated fat diets, analysis was done also in relation to fat consumption. When comparison was done to both matched control groups, a nonsignificant negative association was found between consumption of cups of coffee and BC (odds ratios of greater than or equal to 4 cups of coffee/day vs. less than or equal to 1 per week = 0.6 for BC/NC and 0.7 for BC/SC). This association was observed in all 3 ethnic subgroups studied. The pattern was stronger among the high-fat consumers after controlling for several hormonal confounding factors (two-tailed P-value for linear trend = 0.06 for SC and P = 0.05 for NC). In addition, when the consumption of methylxanthine of BC patients was compared to that of benign breast patients, adjusted by age and ethnic group, a diminished risk was found (odds ratio for BC of the highest level of methylxanthine vs. lowest level = 0.59). PMID- 3856061 TI - Production and characterization of tumor-degenerating factor. AB - Degenerative changes of human tumor cells or continuous cell lines occur when they are cocultured with human embryonic fibroblasts. The present study confirmed that the degenerative changes of the target cells were due to a factor secreted from the human fibroblast culture, because the culture supernatant of human fibroblast caused the same degenerative changes as those induced by the coculture. This factor was termed "tumor-degenerating factor" (TDF). TDF was produced in the fibroblast culture as early as the 1st day and increased gradually up to the 8th day. TDF induced the degenerative changes in human KB cells, HeLa cells, FL cells, and PLC/PRF/5 cells but not in human WiDr cells or in fibroblasts. Also, it did not induce the degenerative changes in various murine cells, bovine cells, rabbit cells, or monkey cells, suggesting that TDF has species specificity. Furthermore, human leukocyte interferon enhanced the activity of TDF. TDF with the specific activity of 2.9 U/mg protein was purified by several chromatographies. At a final recovery rate of 14.6%, the specific activity was increased to 9,010 U/mg protein. Its molecular weight was estimated about 26,500-30,000 by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. TDF was relatively stable to heat treatment. PMID- 3856062 TI - Kinetics and function of tumor cytotoxic factor(s) produced by human blood monocytes activated to the tumoricidal state. AB - Human monocytes obtained from healthy volunteers and isolated by centrifugal elutriation were not cytotoxic to allogeneic tumorigenic cells. These freshly isolated monocytes were rendered tumoricidal following interaction in vitro for 24 hours with greater than 0.01 micrograms lipopolysaccharide (LPS)/ml or over 1 microgram nor-muramyl dipeptide/ml. Monocytes activated by this procedure produced a soluble factor that lysed tumor cells. Full expression of tumor cell lysis required a minimum of 18 hours' exposure of tumor cells to the factor. The degree of tumor cytotoxic factor (TCF) production was closely related to the intensity of monocyte activation to become tumoricidal. Significant production of TCF by monocytes was detected in the supernatants after treatment for 3 hours with LPS. TCF was also released by activated monocytes when cocultivated with tumorigenic cells. Similarly, the level of TCF production correlated with the monocyte density. TCF destroyed human allogeneic tumor cell lines (melanoma, glioblastoma, colon carcinoma, prostatic carcinoma, and breast carcinoma), but it did not affect nontumorigenic cell lines (lung and skin fibroblasts). TCF activity was not blocked by superoxide dismutase, catalase, or protease inhibitors; it was destroyed by being heated at 100 degrees C for 2 minutes. The ability of activated monocytes to release TCF could enhance host defense against cancer. PMID- 3856063 TI - Expression of YBB 3/10 antigen in human tumor colon cell lines and its induction by N,N-dimethylformamide. AB - A monoclonal antibody (YBB 3/10) raised against rat small intestinal brush border membranes defined a high-molecular-weight antigen present on the surface membrane of the epithelial cells in fetal and newborn rat small intestine but appeared specific for the undifferentiated crypt cells in adult rat small intestine. In rat colon and rectum, expression of the YBB 3/10 antigen was limited to a specific period of development, from day 17 to 18 of gestation in the fetus to the first few days after birth. This antigen was detected in 11 of 12 human tumor intestinal cell lines. By immunofluorescent staining, it was found present only in subsets of the cultured tumor cells appearing as colonies of variable size. In contrast, it could not be detected in a large panel of normal rat and human cell lines. Expression of the YBB 3/10 antigen could be induced in the only negative colon tumor cell line (DLD-1 cells) by treatment with N,N-dimethylformamide (CAS: 68-12-2). These results suggested that the YBB 3/10 antigen represented a marker for the differentiated state of human colon tumor cells and that it would be useful to investigate the relationship between the state of cell differentiation and the pattern of development of small and large intestine during fetal and postnatal life. PMID- 3856064 TI - Augmentation of hematoporphyrin uptake and in vitro-growth inhibition of L1210 leukemia cells by succinylacetone. AB - Succinylacetone (SA; 4,6-dioxoheptanoic acid), a specific inhibitor of delta aminolevulinic acid dehydrase (ALAD) (the second enzyme of the heme biosynthetic pathway), was tested for its effect in L1210 cells from inbred DBA/2 mice. ALAD from broken L1210 cells was completely inhibited by 1 microM SA, but in whole cells activity was decreased only 83% after incubation of the cells with 2.5 mM SA for 3 days. When incubated with hematoporphyrin (HP), L1210 cells rapidly took up porphyrin from the medium, and this uptake could be augmented by pretreatment of the cells with SA; but this enhancement of porphyrin uptake occurred gradually over a period of days. When SA-treated and untreated L1210 cells were incubated with increasing concentrations of HP in the medium, SA-treated cells reached the saturation concentration of cellular porphyrin at lower medium HP concentrations than did untreated cells. Growth of L1210 cells could be inhibited by 2 mM SA or more. Addition of increasing amounts of serum to cultures of cells containing SA did not reverse the growth inhibition due to SA. Porphyrin uptake from HP in the medium in nonmalignant fibroblast line 3T3 was much lower than in L1210 cells and could not be enhanced by incubation of the cells with SA. PMID- 3856065 TI - Effect of 514.5-nm argon ion laser radiation on hematoporphyrin derivative treated bladder tumor cells in vitro and in vivo. AB - The therapeutic effect of hematoporphyrin derivative (HpD) plus 514.5-nm argon ion laser radiation was compared to HpD plus 630-nm argon ion laser-pumped dye laser radiation in experimental urinary bladder transitional cell carcinoma models. Cultured human bladder cancer cells (EJ) containing HpD were 2.8-fold more sensitive to 514.5-nm radiation than to 630-nm radiation as measured by clonogenic capacity. The relative effectiveness of 514.5-nm versus 630-nm light was approximately proportional to the spectral absorbance for cell-bound HpD at these wavelengths. HpD-sensitized photoirradiation was studied in solid tumors produced by a) the subcutaneous inoculation of cells from murine bladder tumors induced by N-[4-(5-nitro-2-furyl)-2-thiazoyl]formamide (CAS: 24554-26-5) into female C3H mice (MBT-2 tumor) and b) the intravesical instillation of N-methyl-N nitrosourea (CAS: 684-93-5) into the urinary bladders of female Wistar rats. The tumors were exposed to 144 J/cm2 laser light 24-48 hours following ip injection of 20 mg HpD/kg body weight. By 24-48 hours, animals that received HpD and light of either wavelength had partially or completely necrosed tumors. Control groups showed no necrotic changes. Regression of MBT-2 tumors was also investigated. Seven of 14 and 6 of 12 animals had nonpalpable tumors 1 week after treatment with 514.5-nm and 630-nm light, respectively. Tumors in control groups demonstrated no regression. Spectral transmittance from 630 nm to 514.5 nm decreased by about 4% for 130- to 160-micron-thick sections of canine urothelium and bladder submucosa-muscularis. The results of this study indicate that HpD plus 514.5-nm laser radiation may be an effective treatment for small or superficial malignant lesions of the urinary bladder. PMID- 3856066 TI - Stimulation of proliferation in mixed cultures of mouse tumor cells and nonimmune peritoneal cells. I. Occurrence of stimulation and cyclical variation in tumor cell activity. AB - Mixtures of mouse tumor cells and resident peritoneal cells (PC) from nonimmune mice frequently incorporated [methyl-3H]thymidine [( 3H]dThd) in culture to a far greater extent than did either cell population alone. With PC-to-tumor cell ratios of 10:1, stimulation indices of up to 21 were recorded. Syngeneic, semisyngeneic, and allogeneic mixtures were active. PC elicited by thioglycollate or proteose-peptone could participate in the reaction. PC from mice injected with Corynebacterium parvum also could do so, provided they were precultured for 48 hours. Normal mouse spleen cells and fibroblasts and human Chang cells were inactive. There was considerable variation between experiments in the extent of stimulation observed, even with the same tumor. When tumors were cloned in vitro, freshly isolated clones differed widely in the extent of stimulation. Individual clones studied over a period of time varied markedly and cyclically in the degree of stimulation they exhibited in mixed cultures. This variation appeared to be unrelated to the density of the cultures from which the clones were obtained, to the base-line incorporation of [3H]dThd by tumor cells alone, or to the frequency of passage in vitro. It is suggested that the cyclical variation may be related to the generation of variant cells, which could be important in tumor progression and metastasis. PMID- 3856067 TI - Thymus lymphocytes in rats during induction of bladder tumors and effects of thymosin fraction 5 in vitro. AB - Bladder tumors were induced in Wistar rats by oral administration of N-butyl-N-(4 hydroxybutyl)nitrosamine [(BBN) CAS: 3817-11-6], after which changes in bladder mucous membranes and in the response of thymus lymphocytes to concanavalin A (Con A) were studied. The response of thymus lymphocytes to Con A began to decrease from the 8th week after BBN administration, with changes such as hypertrophy or vascular formation in the bladder membrane. The response decreased markedly from the 15th week, when the tumors became visible. At about the 20th week, approximately 95% of the rats had bladder tumors. When thymus lymphocytes were pretreated with thymosin fraction 5 extracted from calf thymus, the response to Con A improved between the 8th and 20th weeks. When the thymus small-lymphocyte population was separated into lighter, intermediate, and heavier subpopulations by discontinuous density gradient centrifugation and an adhesion column, the effect of thymosin fraction 5 was much greater in the lighter subpopulation. PMID- 3856068 TI - Acute effects of dietary cholic acid and methylazoxymethanol acetate on colon epithelial cell proliferation; metabolism of bile salts and neutral sterols in conventional and germfree SD rats. AB - The acute effects of cholic acid ingestion on methylazoxymethanol acetate [(MAM) CAS: 592-62-1]-treated conventional and germfree rats were investigated. Male SD rats were divided into 4 treatment groups. The first group received control chow; the second group, control chow plus 0.5% cholic acid; the third group, control chow plus MAM; and the fourth group, control chow plus 0.5% cholic acid plus MAM. Fecal bile acids, cholesterol, cholesteral degradation products, and neutral sterols, as well as labeling indices and numbers of epithelial cells per crypt column, were measured after 6 weeks of treatment. The administration of MAM to germfree groups diminished both fecal bulk and the amount of fecal water. MAM did not affect the fecal bile acid composition. Analysis of the fecal bile acids in conventional rats fed cholic acid demonstrated that half of the bile acids were in a form of deoxycholic acid. In the germfree groups fed cholic acid, 90% of the bile acids appeared unaltered in the feces. Neither in the germfree nor in the conventional groups was an effect seen of MAM on the output of fecal neutral sterols. The addition of cholic acid to the food decreased the output of neutral sterols both in the conventional (P less than .001) and in the germfree (P less than .02) animals. The germfree animals showed a reduced amount of neutral steroid excretion (P less than .01) when compared to the findings for the conventional groups. MAM had no influence on the fecal cholesterol or coprostanol output. The consumption of 0.5% cholic acid decreased the total output of cholesterol (P less than .05). The excretion of coprostanol was significantly diminished in the conventional rats fed cholic acid (P less than .001). No difference in labeling indices was observed between conventional and germfree rats, whether treated with cholic acid, MAM, or cholic acid plus MAM. However, all germfree groups showed less epithelial cells per crypt column (P less than .001) than did conventional animals. PMID- 3856069 TI - Inverse correlation between tumor incidence and tissue histamine levels in W/WV, WV/+, and +/+ mice. AB - The influence of mast cells on tumor incidence and growth rate was studied in 2 grafted tumor models (fibrosarcoma MC-B6-1 and the Lewis lung carcinoma 3LL). Three kinds of WBB6F1 mice (a cross between WB/ReJ-W/+ and C57BL/6J-WV/+ mice) were used: W/WV (deeply mast cell depleted), WV/+ (partially mast cell depleted), and +/+ (normal mast cell number). The presumed resistance of F1 hybrids to tumor cells of parental origin was observed in 12 of 13 +/+ mice, but only in 11 of 22 WV/+ mice and in none of 39 W/WV mice. Tumor incidence and metastasis incidence were inversely correlated with tissue histamine levels and mast cell number. Growth rates of tumors were similar in W/WV and WV/+ mice, but the tumor growth rate was much slower in the only +/+ mouse in which the tumor grew. These results confirm the protective role of mast cells against tumors. PMID- 3856070 TI - Antitumor activity of the DNA fraction from Mycobacterium bovis BCG. II. Effects on various syngeneic mouse tumors. AB - MY-1, a fraction extracted from BCG and composed of 70.0% DNA and 28.0% RNA, was examined for its antitumor activity against 9 different syngeneic mouse tumors. Tumor regression was induced in almost all of the mice bearing any of five kinds of solid tumors by repeated intralesional injections of 100 micrograms MY-1. When cells of some tumors were inoculated intradermally together with MY-1, tumor growth was suppressed, lung metastases were inhibited, and the survival times of mice bearing 1 of 3 leukemic tumors were prolonged. Repeated sc injections with MY-1 in sites remote from tumor cell inoculation or repeated iv injections were more or less effective against three kinds of solid tumors. Mice inoculated with Lewis lung carcinoma cells in a hind footpad and whose legs were amputated 9 days later were given iv or sc injections of MY-1 every other day (8 times in total), resulting in substantial prolongation of survival. No direct cytotoxicity of MY-1 for these tumors could be shown in three kinds of experiments, which indicates that the antitumor mechanism of MY-1 is host mediated. MY-1 was equally effective in mice with or without presensitization with BCG, whereas BCG was much more effective in BCG-sensitized mice. This finding suggests that a delayed-type hypersensitivity reaction elicited by BCG protein is not required for the antitumor activity of MY-1. PMID- 3856071 TI - Effects of carcinogen dosage on experimental colonic carcinogenesis by azoxymethane: an ultrastructural study of grossly normal colonic mucosa. AB - The transmission electron microscopic features of grossly normal colonic mucosa in the azoxymethane [(AOM) CAS: 25843-45-2]-treated rat model of colonic carcinogenesis were studied by the method of concomitant variation. Ten-week-old male F344 rats were given 10 weekly sc injections of AOM at doses of 3, 7, or 14 mg/kg body weight and were killed 1 week or 15 weeks after the last AOM dose. Grossly normal distal left colon was examined using transmission electron microscopy. Three transient dose-dependent features of colonic epithelial cells were identified: a) mitochondrial injury, b) nuclear pleomorphism and loss of polarity, and c) increased numbers of mitotic figures in the lower third of the crypts. Because these dose-dependent features were present only shortly after AOM administration, they appeared to be manifestations of carcinogen toxicity and associated reactive, regenerative epithelial changes. By contrast, four persistent dose-dependent features were identified: a) increased numbers of epithelial cells with enlarged nucleoli, b) increased numbers of mitotic figures in the middle third of crypts, c) reduced numbers of goblet cells, and d) reduced numbers of apical cytoplasmic vacuoles in the upper third of the crypts. Because these features persisted in a dose-dependent manner for many weeks after the last dose of AOM and were present after the latent period to tumor formation, they appear to be morphologic precursors to colonic carcinogenesis in the model. PMID- 3856072 TI - Effect of a high-protein-low-carbohydrate diet on toxicity and antitumor activity of 5-fluorouracil in mice. AB - The effect of different levels of dietary protein on 5-fluorouracil (FUra) toxicity and antitumor activity was assessed in female (BALB/c X DBA/2Ha)F1 (CDF1) and BALB/c mice bearing the P1798 lymphosarcoma. In the toxicity experiments, CDF1 mice were fed diets containing 5% [low protein (LP)], 20% [normal protein (NP)], or 60% [high protein (HP)] casein for 22 days and were then given a single ip injection of 275 mg FUra/kg. As determined by effects on the white blood cell count and by changes in body weight, FUra was least toxic in mice fed the HP diet. Moreover, mortality was 77.0, 42.9, and 11.4% for mice fed the LP, NP, and HP diets, respectively. In the antitumor studies, BALB/c mice bearing the P1798 lymphosarcoma were fed one of the 3 diets starting 5 days after transplant. Mice were given injections of 50 mg FUra/kg or the vehicle control on days 14 and 15 after transplant. As measured by tumor weights on day 16, FUra was least effective in mice fed the LP diet and most effective in mice fed the NP and HP diets. Survival time of mice given injections of FUra on days 14 and 15 was increased when compared to the survival time of control mice, but no difference in the percent increase in survival time was noted among the 3 dietary groups. If mice were given two cycles of FUra therapy (days 14 and 15 and days 20 and 21), mice fed the HP diet survived significantly longer than did mice fed the LP or NP diet. These data demonstrate that the feeding of an HP diet markedly decreases the toxicity of FUra while preserving or actually enhancing the antitumor effect. PMID- 3856073 TI - High incidences of pheochromocytomas after long-term administration of retinol acetate to F344/DuCrj rats. AB - The carcinogenicity of retinol acetate [(RAC) CAS: 127-47-9], a synthetic derivative of retinol, was tested by continuous oral administration in the drinking water of F344/DuCrj rats for 104 weeks. Groups of 50 male and 50 female rats were given solutions of 0.25 or 0.125% RAC in the form of gelatinized beadlets suspended in distilled water. Control groups consisting of the same numbers of rats were given 0.25% of placebo beadlets. All of the surviving animals were killed at 108 weeks, 4 weeks after the cessation of the RAC treatments. The survival rates were 72-84% and were sufficiently high for statistical comparison of all groups. Inhibition of body weight gain was marked in females of the high-dose group. Higher incidences of malignant pheochromocytomas, benign pheochromocytomas, and hyperplasias of the adrenal medulla were observed in the RAC-treated groups. The combined incidences of tumors of the adrenal medulla in males and females of the high-dose groups and the incidence in females of the low-dose group were significantly higher than the incidence in the controls. Conversely, statistically significant decreases were found in the incidences of the mammary gland tumors in males of the high-dose group, of thyroid tumors in females of the high-dose group, and of clitoral gland tumors in females of both high- and low-dose groups. It was concluded that RAC given orally possesses potential for increasing the incidence of pheochromocytomas in male and female F344 rats in a dose-related manner under the conditions of this bioassay. PMID- 3856075 TI - Synergism in carcinogenesis. PMID- 3856074 TI - Inhibitory effect of phenobarbital on the development of gliomas in WF rats treated neonatally with N-ethyl-N-nitrosourea. AB - The present study was undertaken to evaluate the effect of phenobarbital (PB) on the development of neurogenic tumors induced in WF rats by neonatal administration of N-ethyl-N-nitrosourea (ENU; CAS: 759-73-9). Group I rats were given a single sc injection in the backs of 5 mg ENU/kg body weight within 24 hours after birth. In group II, continuous oral administration of 0.05% PB in the drinking water was commenced 4 weeks after birth. Following neonatal injection of ENU, administration of PB was commenced 4 weeks after birth in group III. Rats in group IV served as untreated controls. All groups consisted of about an equal number of both sexes of rats. The experiment was terminated when the rats were 52 weeks old. The incidence of all neurogenic tumors in both sexes combined was 11 of 26 (42%) in group I and 3 of 22 (14%) in group III (P greater than .05). The incidence of gliomas alone was 10 of 26 (38%) in group I and 2 of 22 (9%) in group III (P less than .05). When females and males were evaluated separately, the incidence of gliomas in females was 7 of 13 (54%) in group I and 1 of 12 (8.3%) in group III (P greater than .05), whereas in males, 3 of 13 (23%) in group I and 1 of 10 (10%) in group III (P greater than .05), the difference was not statistically significant. At the end of the experiment the mean serum level of PB in females (33.0 micrograms/ml) was significantly higher than that in males (19.8 micrograms/ml) (P less than .05). These data suggest an inhibitory effect of PB on the development of ENU-induced gliomas in female rats. PMID- 3856077 TI - Helping school-age children cope with Tourette syndrome. AB - Tourette Syndrome, a neurological "tic" disorder characterized by involuntary muscular movements and vocal sounds, can be psychologically devastating and unbearable for the school-age child. Through the help and support of educational and medical professionals, children and their families can learn to accept and cope with the uncontrollable, bizarre behavior of the Tourette Syndrome. PMID- 3856076 TI - The clinical validity of circulating tumor-associated antigens CEA and CA 19-9 in primary diagnosis and follow-up of patients with gastrointestinal malignancies. AB - The clinical validity of monitoring the tumor markers carcinoembryonic antigen (CEA) and CA 19-9 were investigated in 602 patients with colorectal, gastric, and pancreatic carcinomas. Sensitivity and specificity of the tests were evaluated preoperatively as well as in the postoperative follow-up for early detection of disease progression and recurrence. At a 95% level of specificity as calculated from a group of 150 patients with benign diseases, the CEA test with monoclonal antibody had a preoperative sensitivity of 39% in colorectal cancer and 21% in gastric cancer. On the other hand, CA 19-9 had a sensitivity of 19% in colorectal cancer, 21% in gastric cancer, and 89% in pancreatic cancer. In the postoperative follow-up it was found that a combination of both tumor marker tests was most profitable in gastric carcinomas, yielding an increase of sensitivity from 59% 94%, showing a high degree of complementarity. The gain in sensitivity provided by the CA 19-9 test over the CEA-test in colorectal cancer was very low. The gain in sensitivity, however, provided by the CEA test over the CA 19-9 test in pancreatic carcinoma was also very low. On the basis of these results it has to be recommended that cases with pancreatic carcinoma are to be monitored most efficiently with the CA 19-9 test, whereas in cases with colorectal cancer the CEA test should be used primarily. However, in gastric cancer the combined use of CEA and CA 19-9 represents a highly valuable basis for monitoring the course of disease. PMID- 3856078 TI - Tourette syndrome in the classroom: special problems, special needs. AB - Tourette Syndrome (TS) is an uncommon developmental disability characterized by repetitive and involuntary verbal and motor tics. A survey of all known affiliates of the Tourette Syndrome Association of Ohio was conducted to document the special problems and needs of the TS student. A total of 431 questionnaires was returned, and the types and frequency of interpersonal and academic school problems were found to be pervasive. Problems did not differ by grade level, but students medicating their TS symptoms experienced more problems. In most cases, current students described similar problems to adults, suggesting that recent attempts to provide optimal educational opportunities to all handicapped children have not been successful where TS is involved. The presence of a behavioral or learning disability diagnosis indicated that substantial percentages of respondents were in need of specialized educational services, but not all those in need were receiving them. Parents were generally satisfied with their child's education, but less satisfied when specialized education was involved. Suggestions are offered for more effectively dealing with the TS child in the classroom. PMID- 3856079 TI - Ibuprofen use in surgical periodontics. PMID- 3856080 TI - Intentional replantation: a 'viable' alternative to extraction or retreatment. PMID- 3856081 TI - Choosing dentistry for a career and professional development: what can be done to help students? PMID- 3856082 TI - Gypsum die materials: setting expansion & relative hardness. PMID- 3856083 TI - Amsacrine and etoposide induced paralytic ileus in a patient with acute myelomonocytic leukemia. AB - A 73-year-old man with acute myelomonocytic leukemia developed a severe paralytic ileus after amsacrine and etoposide treatment. The ileus did not respond to treatment with gastric suction and intravenous fluids. Autonomic neuropathy induced by anti-neoplastic drugs may lead to this life-threatening condition. PMID- 3856085 TI - 14th annual UCLA symposia. Perspectives in inflammation, neoplasia and vascular cell biology. February 2-8, 1985. Abstracts. PMID- 3856084 TI - Hormonal evaluation in patients with osteosarcoma. AB - Aspects of growth regulation were studied in patients with osteosarcoma to ascertain if hormonal imbalance is associated with this disease. Thirty-nine evaluated patients were of normal height for their ages. During the oral glucose tolerance test, carbohydrate intolerance was demonstrated in seven of 18 patients, while growth hormone was slightly elevated in four of 17 patients. Serum somatomedin activity (SMA) was elevated in seven of nine patients. In one untreated patient in whom SMA was measured across the tumor bed, significant gradient of SMA was found; gel filtration of the sera at pH 2.4 revealed a typical SMA profile in the arterial serum and an additional high SMA peak in the venous serum. Among needle biopsy specimens incubated for 48 hours, SMA was released by the histologically viable tumors but not by the nonviable specimens. The data suggest that young patients with osteosarcoma have elevated SMA. PMID- 3856086 TI - 14th annual UCLA symposia. Monoclonal antibodies and cancer therapy. January 26 February 2, 1985. Abstracts. PMID- 3856087 TI - 14th annual UCLA symposia. Leukemia 1985. January 27-February 2, 1985. Abstracts. PMID- 3856088 TI - ["Mixing type" and "light-curing type" composite resins for the molars]. PMID- 3856090 TI - [Computers for dentists]. PMID- 3856089 TI - [Nature of composite resins studied from the clinical standpoint]. PMID- 3856091 TI - Trends and variability in survival among patients with osteosarcoma: a 7-year update. AB - This report is an update of a 1978 article on osteosarcoma in Mayo Clinic patients. It includes additional follow-up on previously reported cases and incorporates new cases treated since the time of that original study. From 1963 through 1981, 336 patients with classic, previously untreated osteosarcoma received their first definitive treatment at our institution. Survival of these patients was studied in detail. The most significant result was that survival in the 1960s was much worse than that in the 1970s. The first evidence of improvement in survival was noted in 1969; subsequently, further improvement occurred but was not consistent. This finding prevailed with respect to duration of survival to death, survival to detection of metastasis, and survival from occurrence of metastasis to death. On the basis of detailed regression analysis, several variables had independent prognostic value. From these findings, a prognostic score was developed, which was based on the number of the following unfavorable characteristics: age younger than 10 years, male sex, tumor diameter more than 15 cm, cell type osteoblastic or chondroblastic, duration of symptoms 2 months or less, and involvement of the femur or humerus. Patients with five or six of these unfavorable characteristics had a very poor survival; in contrast, patients with only one or two characteristics had a good outcome. Even when these scores were fairly constant, however, the calendar period had a strong influence on survival. Likewise, when treatment was considered and adjustments by score were made, no significant differences could be found between those patients treated by amputation only and those treated by amputation supplemented with chemotherapy or radiotherapy. PMID- 3856092 TI - "Marketplace medicine" or monopoly? PMID- 3856093 TI - Anxiety and pain control: a Missouri Dental Board report. PMID- 3856094 TI - The association of LDL receptor activity, LDL cholesterol level, and clinical course in homozygous familial hypercholesterolemia. AB - Patients with homozygous familial hypercholesterolemia (FH), reveal a marked heterogeneity in plasma cholesterol levels, response to diet as well as drug treatment, and clinical course. Low-density lipoprotein (LDL) receptor activities were assessed by the rate of 14C-oleate cholesteryl ester biosynthesis in fibroblasts from 13 FH homozygotes in tissue culture. The receptor activity of the individual patients was highly correlated with initial pretreatment plasma cholesterol and LDL cholesterol levels (P less than .001, r = -0.89). In addition, the LDL receptor activity was positively correlated with the age of onset of angina based on the Cox model (P less than .035, likelihood ratio = 6.71). An association was also noted between LDL receptor activity and cholesterol reduction with drugs. These data provide direct evidence for the correlation between the heterogeneity of the LDL receptor and the expression of the clinical manifestations of homozygous FH. The determination of pretreatment plasma cholesterol level and LDL receptor activity in patients with homozygous FH provide useful parameters on which to base predictions of the clinical progression of cardiovascular disease. These parameters may also influence the selection of a program for diet and drug therapy. Patients with markedly elevated plasma cholesterol levels and very low LDL receptor activity should be considered to be candidates for multiple drug therapy, and portacaval shunt, and/or periodic plasma exchanges. PMID- 3856095 TI - A method for assay of chloramphenicol acetyltransferase from crude cell extract. AB - This is a method for detection and assay of CAT from Chloramphenicol resistant bacterial isolates. The procedure involved quantitative separation of both chloramphenicol acetate (CmA) and Chloramphenicol (Cm) from assay mixtures by adsorption chromatography on a neutral alumina column. The solvent system--2.5% methanol in benzene--was used for elution of CmA and methanol for Cm. This was followed by either colorimetric estimation of CmA by coupling with N--(1 Naphthyl)--ethylene diamine HCL after zinc hydrocholoric acid reduction or by microbiological assay. In the latter method CmA was deacetylated by enzyme from chicken liver acetone powder. As low as 1 microgram of CmA could be determined by the described microbiological turbidimetric assay method. PMID- 3856096 TI - Kinetics of divalent monoclonal antibody binding to tumour cell surface antigens using flow cytometry: standardization and mathematical analysis. AB - Flow cytofluorimetric methods have been used to quantitate the interaction between a divalent monoclonal antibody and a tumour cell surface antigen. After standardization using fluorescein and 125I-labelled antibodies, kinetics of association and dissociation were measured, and antibody bound at equilibrium quantitated. A mathematical model was developed in conjunction with these experimental results which allowed the calculation of rates for monovalent association and monovalent and divalent dissociation, and a description of the contribution of each to the level of bound antibody at different antibody concns. PMID- 3856097 TI - Structural characterization of murine Ia antigen N-linked oligosaccharides and localization of specific structures to two unique alpha-chain glycosylation sites. AB - The sequence of N-linked oligosaccharides of differentially glycosylated murine I Ak alpha-(alpha 2- and alpha 3-) and beta-chains was determined. I-Ak beta-chains predominantly bear a biantennary complex oligosaccharide with a core fucose, and with the peripheral sequence SA----Gal----GlcNAc----Man. The I-Ak alpha-chain has two N-linked glycosylation sites at Asn-82 and Asn-122. When Lubrol-insoluble alpha 3-chains are examined they are found to bear high-mannose oligosaccharides of either the Man9GlcNAc2 or Man8GlcNAc2 type at both sites. When Lubrol-soluble alpha 2-chains are examined, in about 85% of the molecules the Asn-82 site bears a biantennary complex oligosaccharide with core fucose, and with the peripheral sequence SA----Gal----GlcNAc----Man. Interestingly, the Asn-122 site bears a variety of structures. In about 50% of the molecules, the structure at Asn-122 is a biantennary complex oligosaccharide without core fucose and with the peripheral sequence SA----Gal----GlcNAc----Man. In addition, it can bear other complex structures which we did not define further. The apparently restricted addition of fucose to the oligosaccharide at the alpha-Asn-82 site, even when both alpha sites bear biantennary complex structures with the same peripheral sequence, is a feature unique to this system. The unusual variety of structures present at the alpha-Asn-122 site may indicate differential processing in different cell types. PMID- 3856099 TI - Better enzymes by design. PMID- 3856098 TI - Comparison of sister-chromatid exchange induction caused by nitrosoureas that alkylate or alkylate and crosslink DNA. AB - We have investigated the induction of sister-chromatid exchanges (SCEs) in 9L rat brain tumor cells treated with the alkylating agent 1-ethyl-1-nitrosourea (ENU) and 3-(4-amino-2-methyl-5-pyrimidinyl)methyl-1-(2-chloroethyl)-1-nitrosourea (ACNU), an agent that both alkylates and crosslinks DNA. Induction of SCEs by ACNU was found to be 143-fold greater than for ENU. However, on an equimolar basis, the alkylation of DNA by 14C-ACNU was approximately 3.2-fold higher than for 14C-ENU. After correction for this difference was made, the induction of SCEs by ACNU was calculated to be 45-fold greater than for ENU. While DNA alkylation products formed by ACNU and ENU are similar, the chloroethyl alkylation product(s) of ACNU can form DNA-interstrand crosslinks; the ethyl alkylation product(s) of ENU cannot. Based on these findings, we propose that the increased induction of SCEs caused by ACNU is a result of the formation of DNA interstrand crosslinks. PMID- 3856100 TI - Is sequence conservation in interferons due to selection for functional proteins? AB - The human alpha-interferon (IFN-alpha) gene family consists of at least 14 potentially functional non-allelic members; the amino acid sequences they encode differ from each other by up to approximately 20% of their residues. Human IFN beta, which is encoded by a single gene, is distantly related to the IFN-alpha family; it differs in 67% of its residues from IFN-alpha 2. There is considerable evidence that IFN-alpha and -beta compete for the same receptors on their target cells. Comparison of 14 non-allelic human IFN-alpha sequences and the IFN-beta sequence has revealed that 37 of 166 residues are completely conserved and that several of these are arranged in clusters, for example at positions 29-33, 47-50 and 136-150. It is commonly held that evolutionary conservation of amino acids indicates that the residues in question are essential for function. To test this hypothesis in the case of IFNs, we have introduced single site-directed point mutations into the strictly conserved codons 48 and 49 of the IFN-alpha 2 gene which form part of the longest uninterrupted cluster (position 47-50). We report here that the mutant proteins, containing Tyr, Ser and Cys instead of Phe48, or His instead of Gln49, have biological activities indistinguishable from those of wild-type IFN-alpha. In addition, when Glu62, a residue conserved in all known alpha and beta IFNs of man, mouse and cattle, was replaced by Lys, antiviral activity remained unchanged. PMID- 3856101 TI - Metallothionein gene cluster is split by chromosome 16 rearrangements in myelomonocytic leukaemia. AB - The metallothioneins (MTs) are a family of proteins of low relative molecular mass which bind heavy-metal ions. MTs exist in several molecular forms (MT-I, MT II) and are encoded by a multi-gene family containing at least 14 closely related genes and pseudogenes. These proteins function in the regulation of trace-metal metabolism, the storage of these ions in the liver, and as a protective mechanism against heavy-metal toxicity. Somatic cell hybridization has shown that most MT genes, including the functional MT genes (MT1A, MT1B, MT2A), lie on human chromosome 16. Using in situ hybridization, we have now localized the MT genes to band q22 of chromosome 16. This chromosomal band is also a breakpoint in two specific rearrangements, the inv(16)(p13q22) and t(16; 16)(p13;q22) rearrangements, found in a subgroup of patients with acute myelomonocytic leukaemia (AMML). Hybridization of a MT probe to malignant cells from two patients with an inv(16) showed labelled sites on both arms of the inverted chromosome, indicating that the breakpoint at 16q22 splits the MT gene cluster. Similar results were obtained when this probe was hybridized to metaphase cells from two patients with a t(16; 16). These results suggest that the MT genes or their regulatory regions may function as an 'activating' sequence for an as yet unidentified cellular gene located at 16p13. PMID- 3856102 TI - US speeds scrutiny and consent. PMID- 3856103 TI - Rifkin battle lost, war undecided. PMID- 3856104 TI - Hypervariable 'minisatellite' regions in human DNA. AB - The human genome contains many dispersed tandem-repetitive 'minisatellite' regions detected via a shared 10-15-base pair 'core' sequence similar to the generalized recombination signal (chi) of Escherichia coli. Many minisatellites are highly polymorphic due to allelic variation in repeat copy number in the minisatellite. A probe based on a tandem-repeat of the core sequence can detect many highly variable loci simultaneously and can provide an individual-specific DNA 'fingerprint' of general use in human genetic analysis. PMID- 3856105 TI - Of man and mouse. PMID- 3856106 TI - The management of bee hives. PMID- 3856107 TI - The patient from whom I have learned the most: undiagnosed pulmonary emboli are still with us. PMID- 3856108 TI - Spontaneous pneumomediastinum: a report of 10 cases and review of the literature. PMID- 3856109 TI - Thoughts on the beliefs of religious and medical institutions. PMID- 3856110 TI - Home care, an alternative to institutionalization: nurses in action. PMID- 3856111 TI - Pruritus ani. PMID- 3856112 TI - The top-heavy plan rules: what will they do to your retirement plan? PMID- 3856113 TI - Julius seizure--carbamazepine (Tegretol) poisoning. PMID- 3856114 TI - Avulsion injuries of the external ear. PMID- 3856115 TI - Synthroid. PMID- 3856116 TI - The opioid system in Gilles de la Tourette's syndrome. PMID- 3856117 TI - The emergency medical services system in New York State: time for a change. PMID- 3856118 TI - Seroepidemiology of Legionella pneumophila serogroup 1 in healthy residents of New York City. PMID- 3856119 TI - Use of health services by merchant seamen. PMID- 3856120 TI - Neuro-ophthalmologic aspects of occlusive cerebrovascular disease. PMID- 3856121 TI - Factitious hypoglycemia associated with eosinophilic leukemoid reaction. PMID- 3856122 TI - Retroperitoneal cystic lymphangioma. PMID- 3856123 TI - Fibroma of the lung. PMID- 3856124 TI - Treatment of hemoptysis via bronchial artery embolization. PMID- 3856125 TI - Disseminated toxoplasmosis with signs and symptoms of a cerebral lesion. PMID- 3856126 TI - The new "regulators" of health care. PMID- 3856127 TI - Effects of present and past occupational exposures. PMID- 3856128 TI - Searching for alternatives to war. PMID- 3856129 TI - Preventing alcohol-related violence: the physician's role. PMID- 3856130 TI - Psychiatry and the prevention of violence. PMID- 3856131 TI - Extra-adrenal myelolipoma. PMID- 3856132 TI - Violence in psychiatric institutions. PMID- 3856133 TI - The obligation to assess dangerousness. PMID- 3856134 TI - Violence on the highway. A national public health problem. PMID- 3856135 TI - How the police view violence. PMID- 3856136 TI - Violence in the Third World. PMID- 3856137 TI - Medical privilege in the case of abused children. PMID- 3856138 TI - Three decades of lung cancer in Christchurch. AB - The hospital admission rate and management of bronchogenic carcinoma over a period of three decades has been studied by reviewing admissions to the acute general hospitals in Christchurch, using five year samples. Although there was an improvement in the management of the disease between the first and second decades, this plateaued between the second and third. In the first five year period, (1952-6), 97 (47%) out of 208 patients were dead within a month of diagnosis and six patients lived for more than three years. In 1962-66 (21%) out of 328 patients were dead within a month of diagnosis and 25 patients lived longer than three years. In the last five year period (1972-6) 75 patients (16.8%) out of 707 were dead within one month of diagnosis and 46 survived for more than three years. Twenty-six patients remained alive and well seven to eleven years after diagnosis, a long term survival rate of 3.6%. PMID- 3856139 TI - Listeriosis in Christchurch 1967-1984. AB - Between February 1981-May 1982, 18 Christchurch patients were infected with Listeria monocytogenes. Of these eight were pregnant, and three mid-trimester abortions and one neonatal death occurred in this group. One death due to listeriosis occurred amongst the other ten patients. Three patients were part of a small nosocomial outbreak. Prior to February 1981 and since May 1982, infections caused by this organism have been very uncommon. The possible sources of the organism are discussed. PMID- 3856140 TI - Asthma deaths and smoking. PMID- 3856141 TI - Acupuncture. PMID- 3856142 TI - Renal failure on the East Coast. PMID- 3856143 TI - Cimetidine and herpes zoster. PMID- 3856145 TI - Adriamycin and soft tissue injury. PMID- 3856144 TI - Recurrent acute pancreatitis associated with pancreatic stones. PMID- 3856146 TI - Waterborne disease. PMID- 3856147 TI - Ischaemia of the tongue due to temporal arteritis. PMID- 3856148 TI - Hepatitis B virus infections. PMID- 3856149 TI - Lactation in the nulliparous. PMID- 3856150 TI - Microsporum canis infection of the scalp in an adult. PMID- 3856151 TI - Dextropropoxyphene. PMID- 3856152 TI - Agranulocytosis and mianserin. PMID- 3856153 TI - Steroid responsive nephrotic syndrome in a diabetic patient. PMID- 3856154 TI - Social class and health. PMID- 3856155 TI - The diagnostic possibilities of a modified hysteroscopic technique. AB - A small diameter laparoscope and 32% dextran solution was used to perform hysteroscopy on 158 patients with a variety of gynaecological problems. Greatest diagnostic value was in patients with irregular menstrual bleeding and lost IUCDS. The technique of hysteroscopy is easy to learn, safe, and complements the traditional dilatation and curettage as a diagnostic procedure. PMID- 3856156 TI - A cure for snoring. AB - Conservative measures are rarely effective in treating the habitual snorer. A new operation called a uvulopalatopharyngoplasty has been successful in curing snoring in seven patients. PMID- 3856157 TI - Chronically ill and prescription charges. PMID- 3856158 TI - Lung cancer in New Zealand women. PMID- 3856159 TI - Hepatitis B infections in Kawerau. PMID- 3856160 TI - The cost of diabetes in south Auckland. PMID- 3856161 TI - Trauma care in New Zealand. PMID- 3856162 TI - Treatment in mental hospitals. PMID- 3856163 TI - Esterolytic activity during storage of human milk. PMID- 3856164 TI - Capillary function. PMID- 3856165 TI - Infant sleep position: a New Zealand survey. AB - Four thousand and forty-one infants aged 1-4 months were included in a national survey to determine the position in which New Zealand infants usually sleep. Infants were most commonly put down on the side or on the front with the face to one side. Many changed position during sleep. By far the most common position in which infants ended up sleeping was on the front with the face to one side. The proportion of infants in the various sleep positions changed with age. Speculation as to a possible relationship between sleep position and sudden infant death must take into account that many infants do not sleep in the position in which they are put down and that there are changes in position with age. PMID- 3856166 TI - Risk factors for coronary heart disease: a case-control study. AB - Risk factors for myocardial infarction and sudden death have been examined in caucasians using data from a population-based register of coronary disease and an electoral roll sample of adult Aucklanders. The risk factors studied were past history of treatment for hypertension, cigarette smoking, body mass index, serum cholesterol and in men a history of vasectomy. A total of 625 myocardial infarction cases and 185 sudden death cases were compared with 1586 controls aged 35-64 years. In univariate and multivariate analyses in both sexes a history of treatment for hypertension and cigarette smoking were each associated with more than doubling of the risk for myocardial infarction and sudden death. Both men and women with a very high body mass index were at increased risk for myocardial infarction, and serum cholesterol was associated with an increased risk of myocardial infarction in men. Approximately one half of the myocardial infarction events and over half of the sudden death events occurring in this population were attributable to hypertension and smoking. PMID- 3856167 TI - Serious illness in 204 New Zealand families during a 16 year period. AB - Mothers of 204 senior school pupils completed a questionnaire about serious illness in nuclear family members during the lifetime of each adolescent. The information provided was sufficiently detailed to estimate incidence of various types of illness, to categorise illness by degree of seriousness and to compare illness histories between families. Gynaecological conditions in mothers and accidents and infectious diseases in children were the most common serious illness; asthma was reported in 7% of the individuals (27% of families). There had been 17 deaths, 31 life threatening illnesses, 108 major illnesses (defined as at least one week in hospital for a medical condition or for major surgery), 150 serious but non-major illnesses and 84 episodes of minor surgery. Six percent of families reported 36% of the medically serious illnesses. PMID- 3856168 TI - Pain-mood relationships in patients with rheumatoid arthritis. AB - Pain-mood relationships were investigated in 23 patients with long-standing rheumatoid arthritis over a two-week period. Patients completed form B of the Eysenck personality inventory on entry to the study and visual analogue scales for pain, anxiety and sadness daily throughout the study period. Two pain-mood relationships were identified: a synchronous relationship in which pain and mood scores were positively correlated and an asynchronous relationship in which pain and mood scores were uncorrelated. Furthermore, in all patients reporting high pain and showing synchronous relationships, the pain and mood scores were similar in magnitude, while in all patients reporting high pain and showing asynchronous relationships, the pain and mood scores were dissimilar in magnitude. The latter patients remained calm and happy despite severe pain. All patients reporting low pain showed synchronous and close relationships between pain and mood. Extraversion, neuroticism, age, duration and severity of disease were unrelated to pain severity and the pain-mood relationships recorded. The asynchronous pain mood relationship was attributed to a coping response to severe pain. Patient education combined with physical, psychological and pharmacological treatments might induce such a response in patients unable to cope with chronic pain. PMID- 3856169 TI - The management of non-small cell lung cancer. PMID- 3856170 TI - Hydrogen sulphide poisoning: associated with pelt processing. AB - Four cases of poisoning with hydrogen sulphide (H2S) were admitted to Ashburton Hospital within a period of one week following accidental exposure to H2S at a freezing works. We review the clinical presentation of these four cases, their management, follow up and the circumstances which led to their accidental exposure. PMID- 3856171 TI - Perverse tendencies and established victim-prone perversions. PMID- 3856172 TI - Non-compliance with anticonvulsant therapy as a cause of seizures. AB - Compliance with anticonvulsant therapy was assessed in 95 epileptic subjects with uncontrolled seizures. Following a seizure for which an ambulance was called, patients were interviewed and questioned on their medication taking. Compliance was also determined from measurement of anticonvulsant concentrations in saliva, and from intervals between collection of drugs from pharmacy. Compliance failure was found to be instrumental in precipitating 29 (31%) of seizures for which the ambulance was called. At the time of interview, 35 (37%) subjects were not taking their medication regularly in accordance with prescribing instructions. In addition to forgetting medication, many subjects deliberately stopped or changed doses of drugs. Other causes of non-compliance which were indentified included patient misunderstanding of prescribing instructions. Compliance with therapy was positively related to perceived benefit from anticonvulsant therapy. PMID- 3856173 TI - Closure of MRC autoimmunity unit. PMID- 3856174 TI - Hepatitis B infections in Kawerau. PMID- 3856175 TI - Cardiopulmonary resuscitation in hospital. PMID- 3856176 TI - Tuberculosis prevention for medical students. PMID- 3856177 TI - The influence of proteins on the esterase activity of bile-salt-stimulated lipase from human milk. PMID- 3856178 TI - Urinary enoxacin concentration and excretion after a single dose. PMID- 3856179 TI - Recurrent genital candidosis in women. PMID- 3856180 TI - Physiotherapy education. PMID- 3856182 TI - A victory for nursing. Threat to downgrade profession averted. PMID- 3856181 TI - AIDS in New Zealand. PMID- 3856183 TI - Mental health needs of elderly. Interview by Alan Smith. PMID- 3856184 TI - Care of Alzheimer's patients. PMID- 3856185 TI - Care of the aged. This costs nothing. PMID- 3856186 TI - Disaster nursing. 1. Emergency care nurses. PMID- 3856188 TI - Men in nursing. PMID- 3856187 TI - Chlamydia trachomatis & infertility. PMID- 3856189 TI - Proposed NZ Council of Trade Unions. PMID- 3856190 TI - Maori health. A real need for understanding. PMID- 3856191 TI - An interview with J. Richard McFarland ODA president by Cynthia Meter. PMID- 3856192 TI - Caries in Micronesian children. PMID- 3856193 TI - Hazards in dentistry--familiarity breeds contempt. PMID- 3856195 TI - Games dentists play. PMID- 3856194 TI - Oral Kaposi's sarcoma. An early manifestation of AIDS. PMID- 3856196 TI - Tobacco education and "quit smoking" programs in the dental office and community. PMID- 3856197 TI - Speech production before and after orthognathic surgery: a review. AB - A review of investigations in which speech production has been studied before and after orthognathic surgery indicates that many subjects demonstrate preoperative articulation errors. The error type most frequently identified was of the distortion variety, which suggests that misarticulating speakers were attempting to produce the sounds but that in most cases the sounds were phonetically incorrect. The /s/ speech sound and the sibilant class in general, of which /s/ is a member, were often found defective in the subjects' speech. Not all speakers had preoperative articulation errors, which suggests the possibility of compensatory articulation patterns. The literature indicates that some persons with certain occlusal and dental conditions do compensate for structural aberrations. Finally, the vast majority of subjects with preoperative misarticulations eliminated or reduced their errors following orthognathic surgery. In the case of speech behavior, it can be stated that surgical alterations in form brought about positive changes in function. PMID- 3856198 TI - Sensitometric evaluation of rare earth intensifying screen systems. PMID- 3856199 TI - Densitometric evaluation of Soludent and GBX developers. AB - A quick-developing solution (Soludent) and a new developer (Kodak GBX) were compared with a standard x-ray liquid developer. Of the three solutions evaluated, Kodak GBX solution produced slightly greater useful densities in the radiograph at all temperatures evaluated. The rapid-developing solution produced acceptable radiographs in 80% less time, with only slightly higher film fog. PMID- 3856200 TI - Defect of the mandible. PMID- 3856201 TI - Vertical fracture. PMID- 3856202 TI - Sialolith. PMID- 3856203 TI - Sublingual gland herniation through the mylohyoid muscle. AB - A deficiency in the mylohyoid muscle, usually with a herniation of part of the sublingual gland and fat tissue through it, was present in 82 (27.3%) of 300 half heads dissected. In 17 (11.3%) of the cadavers the condition was bilateral. The hiatus appeared as a transverse fissure between the fibers or as a broader round or oval opening. In some cases the herniation was found constricted at its base; in others the base was broad. The importance of these herniations for diagnostic and surgical purposes is stressed, and the possible factors in their development are analyzed. PMID- 3856204 TI - Evaluation of treatment provided patients hospitalized with orofacial odontogenic infections: a retrospective study. AB - The purpose of this study was to evaluate the treatment that patients receive when they are hospitalized for orofacial infections. Results indicated that dental consultations were not always obtained by medical personnel prior to the diagnosis and treatment of patients and that the antibiotic therapy employed did not always involve the recognized drug of choice. PMID- 3856205 TI - Relative value of screening tests of hemostasis prior to dental treatment. AB - Identification of potential bleeders is very important prior to any dental treatment. One hundred fifty-three adult patients in the screening population at a dental school were examined by medical history and by determinations of prothrombin time, partial thromboplastin time, and bleeding time to determine if those patients with a negative bleeding history had a significant percentage of elevated laboratory values. This study was performed to see if these three tests would be of value in screening this population for bleeding disorders. The results suggest that proper medical history taking will identify a majority of potential bleeders and that these three tests are of little value in this population. PMID- 3856206 TI - Oral presentations in non-Hodgkin's lymphoma: a review of thirty-one cases. Part III. Six cases in children. AB - This is the third in a series of articles dealing with oral presentations in non Hodgkin's lymphoma. In this section the authors discuss the clinical and microscopic features of six cases occurring in children, four of which qualified as Burkitt's lymphoma. PMID- 3856207 TI - A follow-up study of apicoectomized teeth with total loss of the buccal bone plate. AB - Opinions differ as to whether or not teeth with advanced marginal bone loss should be subjected to periapical surgery. The purpose of this retrospective investigation was to study the results after apicoectomy on teeth that showed total buccal bone loss at the time of the operation. The material consisted of twenty-seven teeth in 27 patients, fifteen males and twelve females, 23 to 63 years old at the time of the operation. The observation time varied from 0.5 to 7 years (mean, 3 years). Ten operations (37%) were regarded as successful, nine (33%) as uncertain, and eight (30%) as unsuccessful. The success rate was not so low that an apicomarginal communication should be regarded as a contraindication for apicoectomy. Apicoectomy should be performed, especially if the alternative is an otherwise unnecessary prosthetic reconstruction. PMID- 3856208 TI - A suggested role for polymorphonuclear leukocytes in the perpetuation of periapical disease. AB - During the course of an investigation of endodontic materials using subcutaneously implanted human roots in rats and guinea pigs, it was noted that in areas of the root canal which had not been reamed polymorphonuclear leukocytes had migrated into the dentinal tubules. It is suggested that irritation of the periapical tissues may be mediated by these polymorphonuclear leukocytes. Therefore, the occlusion of dentinal tubules which may be exposed to periapical exudate may be of prime importance in endodontic treatment. PMID- 3856209 TI - Isobutyl cyanoacrylate: a clinical and histologic comparison with sutures in closing mucosal incisions in monkeys. AB - Bilateral vertical incisions were made in the maxillary and mandibular labial mucosa of eight young green vervet monkeys. Incisions were closed with either interrupted 4-0 black silk sutures or by the application of isobutyl cyanoacrylate. Mucosal specimens containing the incisions were examined histologically and scored for degree of inflammation at 1, 3, 10, and 20 weeks. The results showed that cyanoacrylate and sutures did not produce similar inflammatory responses. PMID- 3856210 TI - [Serum lysozyme level in children with acute leukemia and malignant diseases]. AB - Serum lysozyme activity was measured in samples from 65 children with acute lymphatic and myelogenous leukemia, solid tumors and malignant lymphoma in comparison with 45 healthy children. All children with acute lymphatic leukemia (ALL) had significantly reduced levels of lysozyme before starting therapy compared with a control group (p less than 0,01). Children with ALL in complete remission had lysozyme levels comparable to normal children, while children with ALL in relapse showed pathological low levels again. Children with acute myelogenous leukemia (AML), solid tumors and malignant lymphomas had higher lysozyme concentration before therapy than healthy children. Determination of lysozyme activity in children with acute leukemia and malignant tumors is of value for diagnosis and to control the effect of therapy. PMID- 3856211 TI - Mechanism of action of indomethacin in tubular defects. AB - Indomethacin, a potent prostaglandin synthesis inhibitor, has been proven to be effective in a number of tubular defects characterized by enhanced prostaglandin (namely, prostaglandin E2 (PGE2) production, but its mechanism of action is poorly understood. To elucidate further the mechanism(s) by which indomethacin reverses the abnormal tubular functions, five children with different tubular defects (nephrogenic diabetes insipidus, three cases; Fanconi syndrome, one case; and pseudohypoaldosteronism, one case) were treated with indomethacin. Indomethacin, 1 mg/kg every eight hours, was given for 1 week to all children and then was given chronically to four of the children who responded to the drug. Its use was suspended in a 10 year-old-boy with nephrogenic diabetes insipidus because it proved ineffective. To assess the site along the nephron where indomethacin affects the solute and water excretion, an acute water load study was performed in three responsive children before and during the treatment. Indomethacin did not significantly alter the glomerular filtration rate but was effective in reducing diuresis and levels of urinary sodium and potassium excretion. In the child with Fanconi syndrome, indomethacin was also effective in controlling the urinary loss of phosphate, urate, glucose, and bicarbonate. Results of the water load studies show that indomethacin decreases the delivery of solute from the proximal tubule, reduces the fractional free water clearance, and increases the urine-plasma osmolar ratio.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3856212 TI - The T.M.J. centers: filling a gap in chronic pain treatment. PMID- 3856213 TI - Compensation of Minnesota dental auxiliaries. PMID- 3856214 TI - Enamel proteins and the mineralization of enamel. PMID- 3856215 TI - Feeding problems in stroke patients. PMID- 3856216 TI - Detailed evaluation of six Class 2 amalgam restorations. PMID- 3856217 TI - Advantages and disadvantages of direct gold restorations. PMID- 3856218 TI - Gold foil: a potential practice builder in the '80s. PMID- 3856219 TI - In situ enzymatic reclosure of opened imidazole rings of purines in DNA damaged by gamma-irradiation. AB - When aqueous solutions of DNA were treated with 10-500 grays of gamma-rays, the imidazole rings of some adenine and guanine residues underwent scission, resulting in the conversion of these purines to formamidopyrimidines. It was found that formamidopyrimidine-DNA glycosylase, known to remove imidazole-ring opened 7-methylguanine from DNA, did not excise the radiation-induced non alkylated formamidopyrimidines formed for adenine and guanine. The repair of these ring-opened purines was found to involve an enzymatic recyclizing of the opened imidazole ring that effects a restoration of the C-8 to N-9 bond. The enzyme, purine imidazole-ring cyclase reclosed the imidazole rings of 90% of ring opened adenine or guanine, but did not close the opened imidazole ring of 7 methylguanine-derived formamidopyrimidine in DNA. PMID- 3856220 TI - Catabolism of premercapturic acid pathway metabolites of naphthalene to naphthols and methylthio-containing metabolites in rats. AB - [14C]Naphthalene was given orally to rats with cannulated bile ducts and to germ free rats. Bile and urine from the cannulated rats and urine from the germ-free rats contained no radioactive 1,2-dihydro-1-hydroxy-2-methylthionaphthalene and only trace amounts of radioactive naphthols or naphthol conjugates. Urine of control rats contained 4.6% of the 14C dose as naphthols and/or naphthol glucuronides. Appreciable quantities of 1- and 2-naphthol (7-20% of dose) and 1,2 dihydro-1-hydroxy-2-methylthionaphthalene (1-35% of dose) were in urine from rats dosed orally or intracecally with 1,2-dihydro-1-hydroxy-2-S-cysteinylnaphthalene and 1,2-dihydro-1-hydroxy-2-S-(N-acetyl)cysteinylnaphthalene. Apparently, in vivo, naphthols and methylthio-containing metabolites of naphthalene are formed during enterohepatic circulation of 1,2-dihydro-1-hydroxy-2-S cysteinylnaphthalene and 1,2-dihydro-1-hydroxy-2-S-(N-acetyl)cysteinylnaphthalene in a process dependent upon intestinal microflora. A possible pathway for the formation of naphthols is aromatization of the precursor compounds by elimination of the appropriate substituent group from these metabolites. This discovery of the essential role of the intestinal microflora in the formation of naphthols from naphthalene indicates the existence of a novel pathway for hydroxylation of aromatic systems and challenges the current concept of the in vivo relevance of the in vitro production of naphthols from naphthalene 1,2-oxide. PMID- 3856221 TI - N-nitrosodialkylamines do not function as substrates for liver monoamine oxidase. AB - Since reports in the literature [Rowland, I.R., Lake, B. G. & Gangolli, S. D. (1980) Mutat. Res. 72, 63-72] have implicated hepatic monoamine oxidase (EC 1.4.3.4) in the activation of N-nitrosodialkylamines to mutagens, it is of basic pharmacological and biochemical interest to determine if these compounds could serve as substrates for this enzyme. The dialkylnitrosamines N nitrosodiethylamine, N-nitrosodimethylamine, and N-nitrosodibenzylamine were tested and found not to be substrates, competitive inhibitors, or irreversible inhibitors of liver monoamine oxidase. Thus, any role for monoamine oxidase participation in the mutagenic activation of these compounds must be subsequent to an initial conversion of these compounds to their respective secondary amines. PMID- 3856222 TI - Isolation and characterization of an RNA ligase from HeLa cells. AB - An RNA ligase has been purified from HeLa cells, which catalyzes the intra- and intermolecular ligation of linear RNA substrates possessing 5'-hydroxyl and 2',3' cyclic phosphate termini in the presence of ATP or dATP. In this reaction, the 2',3'-cyclic phosphate is incorporated into a 3'-5'-phosphodiester bond, in agreement with the findings of Filipowicz et al. [Filipowicz, W., Konarska, M., Gross, H. J. & Shatkin, A. J. (1983) Nucleic Acids Res. 11, 1405-1418]. The activity of the purified enzyme is dependent on the addition of ATP or dATP, a divalent cation (Mg2+), and 5'-hydroxyl, 2',3'-cyclic phosphate-terminated RNA substrates. No ligation occurs with the substrates OH(Up)10G(3')p or OH(Up)10G(2')p or with 5'-phosphate, 2',3'-cyclic phosphate-terminated oligoribonucleotides. PMID- 3856223 TI - Expression of human adenosine deaminase using a transmissable murine retrovirus vector system. AB - Human adenosine deaminase (ADA; adenosine aminohydrolase, EC 3.5.4.4) was expressed at high levels in cultured mouse cells using a transmissable murine retrovirus vector system. A cDNA clone encoding ADA has been inserted into a plasmid vector containing retroviral transcription and packaging signals as well as a selectable gene for G418 resistance. The constructions were transfected into psi 2 cells, which package the recombinant retroviral genomes into replication defective virus particles. Isoenzyme analysis for ADA in G418-selected psi 2 cells showed at least 20-fold more human ADA activity than endogenous mouse ADA activity. A mouse T-cell lymphoma line, BL/VL3, was cocultured with transformed psi 2 cells producing human ADA, and some of the cocultured cells were selected for resistance to G418. Both G418-selected and unselected cocultured cells expressed human ADA activity at 25%-50% the level of the endogenous enzyme. Thus, efficient retroviral transduction of ADA expression was obtained. PMID- 3856224 TI - Active site structures of deoxyhemerythrin and oxyhemerythrin. AB - The physiologically active forms of the nonheme-iron, oxygen-transport protein hemerythrin have been studied by x-ray crystallographic techniques. At 3.9-A resolution, a difference electron-density map between the deoxy form and met form (methemerythrin) of the protein suggests only small differences in the binuclear iron complexes. The coordination of the iron atoms appears to be the same in both the deoxy and met forms, one iron of the complexes being pentacoordinate, the other iron being hexacoordinate. The iron atoms appear to be somewhat farther apart in the deoxy form. A 2.2-A resolution study of oxyhemerythrin shows that dioxygen binds to one iron atom--the pentacoordinate one in the met form of the protein, the same binding site found for azide in azidomethemerythrin. PMID- 3856225 TI - Efficient transcription of a protein-coding gene from the RNA polymerase I promoter in transfected cells. AB - The activity of the mouse ribosomal promoter was examined after fusion to the gene coding for chloramphenicol acetyltransferase (CAT) and transfection into mouse cells. Very little CAT enzyme but high levels of CAT-specific RNA correctly initiated at the ribosomal DNA start site were synthesized. The amount of specific transcripts was neither influenced by long stretches of upstream spacer sequences nor by the insertion of the Moloney murine sarcoma virus enhancer. The deletion mutant pMr delta-39, which has been shown to be fully active in vitro, exhibited a 90% decrease in template activity in vivo. A mutant in which 22 base pairs of ribosomal DNA (between positions -35 and -14) were substituted by foreign DNA sequences proved transcriptionally inactive. The fusion genes were only transcribed in mouse cells, indicating that species-specific transcription factors are involved in ribosomal promoter recognition. PMID- 3856226 TI - A protein kinase from Xenopus eggs specific for ribosomal protein S6. AB - A protein kinase specific for ribosomal protein S6 has been purified from eggs of Xenopus laevis. As visualized on a silver-stained polyacrylamide gel, the major protein in the preparation migrated with a Mr of 90,000. Incubation of the enzyme preparation with [gamma-32P]ATP led to phosphorylation of this protein on serine residues. Upon glycerol gradient centrifugation, the S6 kinase activity and the Mr 90,000 protein both sedimented with a Mr of 50,000-55,000. Two-dimensional gel electrophoresis demonstrated that up to 4-5 phosphate groups per S6 molecule could be incorporated with this enzyme in vitro, and two-dimensional peptide mapping demonstrated that the phosphopeptides from S6 labeled in vitro with the enzyme comigrated with those from highly phosphorylated S6 labeled in vivo in response to progesterone treatment. The purified S6 protein kinase did not phosphorylate at a significant rate ribosomal protein S10, histone H1, histone H4, mixed histones, casein, or phosvitin, indicating a high degree of substrate specificity. These results indicate that activation of a single S6 protein kinase may be sufficient to account for increased S6 phosphorylation after a growth stimulus. PMID- 3856227 TI - A genetic screen for mutations that increase the thermal stability of phage T4 lysozyme. AB - A method has been developed to screen for mutants of phage T4 lysozyme that are more stable than the wild-type enzyme. Using an assay that detects lysozyme activity on Petri plates [Streisinger, G., Okada, Y., Emrich, J., Newton, J., Tsugita, A., Terzaghi, E. & Inouye, M. (1966) Cold Spring Harbor Symp. Quant. Biol. 31, 77-84], protein synthesized during the formation of phage plaques at a permissive temperature (33 degrees C) was tested for its ability to withstand incubation at a temperature that inactivates the wild-type enzyme. In our initial screen of approximately 3 X 10(4) plaques from a T4 phage stock mutagenized with hydroxylamine, greater than 30 mutants that produce lysozyme activity resistant to high temperature incubation were found. Lysozyme produced by two of the mutants was purified and found to denature at a higher temperature than the wild type enzyme in vitro. We have called such mutants "st" for thermostable. The existence of st mutants indicates that protein stability is not maximized during evolution; instead, it is likely that stability is optimized for the physiology of the organism. Analysis of the structures of these mutants will provide another way to identify and predict interactions that stabilize proteins. The method of finding thermostable variants presented here may be applicable to any protein that can be detected by a plate assay or by a plate screen with antibodies. PMID- 3856228 TI - Molecular dynamics simulations of d(C-G-C-G-A) X d(T-C-G-C-G) with and without "hydrated" counterions. AB - We present the results of molecular dynamics simulations on d(C-G-C-G-A) X d(T-C G-C-G) with fully charged phosphates with and without inclusion of counterions. The average structures found in the two simulations are similar, but the simulation with counterions does give an average helix repeat, tilt, and twist in better agreement with those found in the x-ray structure of d(C-G-C-G-A-A-T-T-C-G C-G)2. The average sugar pucker phases and amplitudes are in qualitative agreement with those found in NMR studies of double-helical DNA, and a number of examples of sugar repuckering from C2' endo to C3' endo carbon conformations in the sugar ring are found. The hydrogen bond correlations as well as torsion correlations are analyzed, and some interesting long-range correlations between dihedral angles are found. PMID- 3856229 TI - Differences between two fractions of glycosaminoglycans of the corneal stroma in their structural relation to collagen. AB - Glycosaminoglycans (GAG) of bovine cornea were sequentially extracted by 0.15 M NaCl and by 1 M CaCl2, pH 8. The amounts of hexosamine (HexN) and hexuronic acid (HexUA), specific hexoses (Hex), and protein were determined in the extracts. The ultrastructure of the corneal stroma after NaCl and NaCl/CaCl2 extraction was also studied. Approximately 70% of the Hex-HexN extractable by 0.15 M NaCl is removed in the first NaCl extract, with the amount decreasing rapidly to the fifth NaCl extract. Only 20-30% of the extractable HexUA-HexN is removed in the first NaCl extract; subsequent extraction removes successively less HexUA-HexN. There is a sharp increase, however, in both Hex-HexN and HexUA-HexN removed in the first 1 M CaCl2 extract, ranging from 25 to 40% of the total extractable with NaCl. The stroma retained lamellar organization and normal spacing, diameter, and length of collagen fibers after NaCl extraction. Visibility of the 64-nm periodicity was enhanced because of loss of density in the ground substance. CaCl2 extraction led to loss of lamellar organization and apparent disruption of the collagen fibers. Only short thin fibrils remained, embedded in a material having the density and very fine fibrillar organization of basal lamina. Disruption of the collagen fibers is probably due to removal of a specific GAG component necessary to maintain the collagen as an extended morphologic structure but may also be due to a specific degradative effect of CaCl2 on collagen no longer covered by a protective layer of GAG and glycoproteins. PMID- 3856231 TI - Colony formation by primitive hemopoietic progenitor cells in serum-free medium. AB - A serum-free medium has been developed for clonal growth of murine hemopoietic progenitor cells. In this medium, the number of nonerythroid colonies induced by factors produced by cloned T lymphocytes was 90 +/- 10% of the number generated in serum-containing medium. Erythroid colony number in serum-free cultures containing the T-cell factors but no exogenous erythropoietin was significantly higher than that in cultures with serum, and the cloning efficiency was independent of cell concentration. Further addition of erythropoietin increased erythroid colony number approximately equal to 4-fold. Pure erythropoietin alone stimulated erythroid colony formation, but the cloning efficiency was highly dependent on cell concentration. Analysis of individual colonies generated in serum-free cultures containing the T-cell factors indicated that some contained cells of several hemopoietic lineages, demonstrating that multipotential progenitors can give rise to colonies in this system. PMID- 3856230 TI - Expression of the mouse serum albumin gene introduced into differentiated and dedifferentiated rat hepatoma cells. AB - A 23-kilobase-pair segment of DNA containing the entire mouse serum albumin gene as well as 2.2 kilobase pairs of 5' and 4.3 kilobase pairs of 3' flanking sequences has been introduced into pSV2dhfr, a plasmid in which expression of the mouse dihydrofolate reductase cDNA is under the control of simian virus 40 sequences. This vector, pSV2dhfr-alb, was used to transfect differentiated and variant dedifferentiated rat hepatoma cells. Nine independent clones of transfected differentiated cells secrete considerable amounts of mouse albumin, while the expression of the normal rat albumin is the same as in nontransfected cells. In contrast, only small amounts of mouse and rat albumin are produced by transfected dedifferentiated cells. The amounts of albumin mRNA present in the cells are consistent with the amounts of albumin produced. These results show that a transfected gene can be regulated in a fashion consistent with the overall differentiation profile of the cell. PMID- 3856232 TI - Structure of the signal recognition particle by electron microscopy. AB - The signal recognition particle (SRP) is a ribonucleoprotein consisting of six distinct polypeptide components and one molecule of small cytoplasmic RNA (7SL RNA). The particle was previously shown to function in protein translocation across and protein integration into the endoplasmic reticulum membrane. Homogeneous signal recognition particle preparations were visualized by electron microscopy (i) after negative staining, (ii) by dark-field imaging of unstained specimens, and (iii) by platinum-shadowing. The results of each of these different techniques indicate that the signal recognition particle is a rod shaped particle 5-6 nm wide and 23-24 nm long. PMID- 3856233 TI - Intracellular free calcium levels are reduced in mitotic Pt K2 epithelial cells. AB - Using a fluorescence ratio method, we have studied the intracellular free calcium levels in individual quin-2-loaded mitotic cells under the microscope. We have found that intracellular free calcium concentrations in Pt K2 epithelial cells drop by approximately 50% as they pass through mitosis. Calcium levels in interphase cells were 53 +/- 7 nM. During prophase, free cytoplasmic calcium begins to decrease, reaching 28 +/- 3 nM in prometaphase. Calcium levels remain low until the nuclear envelope is re-formed in late telophase, when they increase again to interphase levels. This decrease in overall free calcium in mitosis suggests that the mitotic cell has mechanisms for the general sequestration, and perhaps local release, of calcium ions. PMID- 3856235 TI - Variances and covariances of identity coefficients of a multigene family. AB - By using a model of gene conversion for treating concerted evolution of multigene families, a theory for calculating the variances and covariances of identity coefficients has been developed. Six coefficients on triple identity and 15 coefficients on quadruple identity are needed. The variances and covariances are obtained from the quadruple identity coefficients and divided into within population and between-population components. The former represents the variation of identity coefficients among individuals within a population, whereas the latter represents the magnitude of fluctuation of population averages. Monte Carlo simulations confirmed the theoretical predictions at equilibrium. PMID- 3856234 TI - Heparin affinity of anionic and cationic capillary endothelial cell growth factors: analysis of hypothalamus-derived growth factors and fibroblast growth factors. AB - Bovine hypothalamus-derived growth factors (HDGF), pituitary fibroblast growth factor (FGF), and brain FGF were analyzed by chromatography on immobilized heparin and tested for the ability to stimulate the proliferation of capillary endothelial (CE) cells. Two distinct CE cell growth factors were found in hypothalamus, one anionic (aHDGF; pI of about 5) and one cationic (cHDGF; pI of about 8). Both aHDGF and cHDGF adhered tightly to immobilized heparin. They were eluted with 0.9-1.1 M NaCl and 1.3-1.5 M NaCl, respectively. Pituitary and brain FGF were also found to bind to immobilized heparin and to stimulate CE cell proliferation. Pituitary FGF was eluted at 1.4-1.6 M NaCl. The elution profile of brain FGF showed that two peaks of CE cell growth factor activity were eluted from the heparin column, one at 1.0 M NaCl and a second at 1.4-1.6 M NaCl. The tight binding of all of these growth factors to heparin (particularly aHDGF, whose binding is unexpected because of its negative charge) is presented as evidence that CE cell growth factors all share an affinity for heparin. PMID- 3856236 TI - Nick-translation of metaphase chromosomes: in vitro labeling of nuclease hypersensitive regions in chromosomes. AB - Chinese hamster metaphase chromosomes were labeled by nick-translation, which involved pretreatment of metaphase chromosomes with low levels of DNase I followed by incubation with DNA polymerase I and radioactively labeled nucleotides. The labeled DNA was located on nuclease-hypersensitive regions of the chromosomes, as suggested by the following observations. (i) The labeled DNA was hypersensitive to the subsequent DNase I digestion. (ii) The labeled DNA contained no nucleosomes. DNA reassociation kinetic analysis suggested that the labeled DNA was enriched in repetitive DNA sequences. Base composition analyses showed that the labeled DNA was highly enriched in guanine and adenine residues, suggesting that the nick-translation reaction was asymmetrical and the strand enriched in purine was preferentially translated. Autoradiographic analysis revealed that the label was distributed on every chromosome, but there was a lower grain density on the Y chromosome, which is heterochromatic and exhibits a relatively low level of gene activity. The locations of silver grains on the Y chromosomes were generally consistent with that revealed by the in situ hybridization using [3H]cDNA synthesized from the total Chinese hamster messenger RNA. These observations suggest that a specific subset of genomic DNA on active chromatin is the preferred site of the nick-translation. PMID- 3856237 TI - Activation of an N-ras gene in acute myeloblastic leukemia through somatic mutation in the first exon. AB - A transforming N-ras gene has been cloned from acute myeloblastic leukemia bone marrow cells, in parallel with the N-ras gene derived from fibroblasts of the same patient. N-ras derived from fibroblasts lacked focus-forming activity in NIH/3T3 cells, indicating that gene activation in the leukemia cells must have occurred by a somatic event. Construction of chimeric molecules between the transforming and the normal N-ras genes and subsequent biological and sequence analysis of these constructs revealed that the transforming gene was altered by a point mutation changing amino acid 12 of the N-ras protein from glycine to aspartic acid. PMID- 3856238 TI - The liver excretes large amounts of heme into bile when heme oxygenase is inhibited competitively by Sn-protoporphyrin. AB - TinIV-protoporphyrin IX (Sn-protoporphyrin) potently inhibits heme degradation to bilirubin in vitro and in vivo, and it completely suppresses neonatal hyperbilirubinemia in experimental animals, including primates. It also reduces plasma bilirubin levels in certain naturally occurring or induced forms of jaundice in animals and man. We have examined in this study the fate of that fraction of heme whose degradation to bile pigment is inhibited in vivo by administration of this heme oxygenase (EC 1.14.99.3) inhibitor. In bile-duct cannulated rats, infused exogenous heme is rapidly converted to biliary bilirubin; a small amount of the infused heme is excreted into bile as well. Sn protoporphyrin, administered with the exogenous heme, markedly increased (3- to 4 fold) the amount of heme excreted into bile and greatly diminished biliary output of bilirubin. The increase in biliary heme output exceeded the decrease in bilirubin excretion elicited by the inhibitor metalloporphyrin. In the same experimental model, Sn-protoporphyrin substantially decreased the conversion of heme, derived from heat-damaged erythrocytes, to biliary bilirubin. This decrease in biliary bilirubin output was accounted for entirely by a prompt and marked increase in biliary excretion of unmetabolized heme. The enhanced biliary excretion of unmetabolized heme following administration of Sn-protoporphyrin is a newly defined and biologically important response associated with use of this synthetic heme analogue. The features of the action of this compound in vivo- suppression of formation of the potentially neurotoxic metabolite, bilirubin; enhancement of disposal of the untransformed substrate (heme) of the enzyme that it inhibits; and its own elimination without metabolic alteration--define some of the characteristics of a therapeutically useful chemical. PMID- 3856239 TI - Biochemical rationale and myocardial tissue data on the effective therapy of cardiomyopathy with coenzyme Q10. AB - The tissue levels of coenzyme Q10 (CoQ10) in endomyocardial biopsy samples and blood from 43 patients with cardiomyopathy were determined by steps of extraction, purification, and HPLC. The biopsy samples were obtained from the patients after a routine heart catheterization. Six patients were of class I, 18 of class II, 11 of class III, and 8 of class IV (classified according to guidelines of the New York Heart Association). True control biopsies of healthy hearts are not available for ethical reasons, but the data of the four classes by severity of disease may be justifiably compared. Patients of class IV had lower (P less than 0.01) levels of CoQ10 than those of class I. Patients of classes III and IV had a lower (P less than 0.0001) level than those of classes I and II. Biopsy samples were obtained from five patients after treatment with CoQ10 for 2 8 months. The increases of CoQ10 levels ranged from 20% to 85%; the mean value was higher (P less than 0.02) than before treatment. Blood deficiencies also increase with severity of disease, but not as markedly as for the biopsies. These data reveal a myocardial deficiency of CoQ10, which is higher with increasing severity of disease and is reduced by therapy. This biochemistry correlates with the effective treatment of cardiomyopathy with CoQ10. PMID- 3856240 TI - Anti-peripheral myelin antibody in patients with demyelinating neuropathy: quantitative and kinetic determination of serum antibody by complement component 1 fixation. AB - The role of anti-peripheral nerve myelin antibody (anti-PNM Ab) in the pathogenesis of acquired demyelination of peripheral nerve is unclear, in part, due to the poor correlation between antibody and disease activity. Previous studies show that only 27-50% of patients with acute demyelinating neuropathy or Guillain-Barre syndrome (GBS) had serum Abs to peripheral nerve or PNM as demonstrated by consumption of hemolytic activity of serum complement 1 (C1) fixation and transfer assay, quantitative determinations of anti-PNM Ab showed significantly high titers in the serum of patients with GBS, chronic and recurrent polyneuritis, and paraproteinemia associated with peripheral neuropathy. All 11 patients with acute-phase GBS had Ab titers 6-56 times higher than controls. In 6 GBS patients, serial Ab determinations showed that titers were highest on admission, fell rapidly the first week, and became undetectable or barely detectable by the third week. Declining Ab titers coincided with cessation of clinical progression. In 3 GBS patients, depletion of serum IgM lowered anti-PNM Ab titers significantly, whereas IgG depletion failed to produce a similar effect. This study shows that the C1 fixation and transfer assay is a sensitive method to detect anti-PNM Ab in the serum of patients with a variety of demyelinating neuropathies and provides good correlation between Ab level and the clinical course of GBS patients. It may provide important information about the pathogenesis of the demyelinating neuropathies. PMID- 3856241 TI - Intrinsic projections within visual cortex: evidence for orientation-specific local connections. AB - The functional organization of intrinsic connections within area 18 of cat visual cortex was studied using combined electrophysiological and anatomical techniques. Physiological recordings were first used to map the distribution of orientation preference, ocular dominance, and receptive-field location relative to the cortical surface. Next, localized injections of lectin-conjugated horseradish peroxidase were made into physiologically identified regions within area 18. We found that (i) the local cortical interconnections are made preferentially between cell populations with orthogonal preferred orientations and are independent of the ocular dominance of the cortical cells, (ii) the map of visual space in the cortex is anisotropic with the magnification factor for vertical at least twice that for horizontal visual space, and (iii) the pattern of cortical projections compensates for the functional asymmetry so that a population of interconnected cells represents a roughly circular region of visual space. PMID- 3856242 TI - Demonstration and affinity labeling of a stereoselective binding site for a benzomorphan opiate on acetylcholine receptor-rich membranes from Torpedo electroplaque. AB - The interaction of an optically pure benzomorphan opiate, (-)-N-allyl-N normetazocine [(-)-ANMC], with the nicotinic acetylcholine receptor from Torpedo electroplaque was studied by using radioligand binding and affinity labeling. The binding was complex with at least two specific components having equilibrium dissociation constants of 0.3 microM and 2 microM. The affinity of the higher affinity component was decreased by carbamoylcholine but not by alpha bungarotoxin. The effect of carbamoylcholine was not blocked by alpha bungarotoxin. In comparison, the affinity of [3H]phencyclidine, a well characterized ligand for a high-affinity site for noncompetitive blockers on the acetylcholine receptor, is increased by carbamoylcholine and the increase is blocked by alpha-bungarotoxin. The binding of (-)-[3H]ANMC was inhibited by a number of other benzomorphans, with (-) isomers being 4- to 5-fold more potent than (+) isomers. Phencyclidine inhibits the binding of (-)-[3H]ANMC to its high affinity site by a mechanism that is not competitive. UV-catalyzed affinity labeling indicated that the high-affinity-binding site for (-)-[3H]ANMC is at least partially associated with the delta subunit. Tryptic degradation of the Torpedo marmorata delta chain suggested that (-)-ANMC labeled a 16,000-dalton COOH-terminal portion of the subunit. In contrast, 5-azido-[3H]trimethisoquin, a photoaffinity label of the high-affinity site for noncompetitive blockers, labels a 47,000-dalton NH2-terminal fragment of the delta subunit. These results suggest that (-)-[3H]ANMC binds to sites completely distinct from the binding sites for acetylcholine. The high-affinity-binding site for (-)-ANMC and that for phencyclidine and 5-azidotrimethisoquin are allosterically coupled but are regulated differently and are probably physically distinct. PMID- 3856243 TI - Ultrastructural features of minute chromosomes in a methotrexate-resistant mouse 3T3 cell line. AB - The Miller spreading procedure was applied to mouse metaphase spreads of methotrexate-resistant 3T3 cells that contain large numbers of minute chromosomes and dihydrofolate reductase genes. There is substantial variation in both size and numbers of minutes in individual cells, the smallest of which (estimated as 5 X 10(3) kilobase pairs) would be undetected by standard light microscopic analyses. Minute chromosomes are composed of nucleosomal chromatin, which is organized into typical higher order fibers that are folded to form rosette-like structures characteristic of normal chromosome organization. There is no evidence that the DNA in minutes is linear. Minutes exist singly and in pairs, and members of a pair are connected by higher order chromatin fibers, suggesting that they are topologically interlocked. They are often closely apposed to chromosomal telomeres or arms, a configuration that may be involved in their distribution at mitosis. In addition to typical minutes, which do not possess kinetochores, a small marker chromosome possessing all of the features of a centromere region is present in parental and resistant cells. An unusual feature of this cell line is the retention of resistance, minute chromosomes, and amplified dihydrofolate reductase genes; most methotrexate-resistant mouse cell lines with minute chromosomes lose these properties when grown in the absence of methotrexate. PMID- 3856244 TI - Two alkaline phosphatase genes positioned in tandem in Bacillus licheniformis MC14 require different RNA polymerase holoenzymes for transcription. AB - Southern transfer analysis of Bacillus licheniformis MC14 DNA, using as probe a DNA fragment from within the coding region of a previously cloned alkaline phosphatase (APase) gene, revealed a second area of hybridization adjacent to the cloned APase gene. A second APase gene (APase II) was subcloned from the same plasmid clone, pMH8, from which the first APase gene (APase I) had been subcloned. The two genes are arranged in tandem with several hundred base pairs separating them. Immunoblot analysis showed that both code for Mr 60,000 proteins that crossreact with anti-APase. Both proteins enzymatically cleave 5-bromo-4 chloro-3-indolyl phosphate. In vitro transcription showed that APase I and APase II are transcribed in the same direction but that the two genes require different forms of Bacillus RNA polymerase: sigma 55- and sigma 37-containing RNA polymerase holoenzymes, respectively. PMID- 3856245 TI - Ethylation of poly(dC-dG).poly(dC-dG) by ethyl methanesulfonate stimulates the activity of mammalian DNA methyltransferase in vitro. AB - Ethylation of poly(dC-dG).poly(dC-dG) with ethyl methanesulfonate (EtMes), a known carcinogen, at increasing molar ratios of EtMes/C X G base pairs progressively stimulated the methyl-accepting ability of the DNA during in vitro methylation by partially purified rat DNA (cytosine-5)-methyltransferase (EC 2.1.1.37). Maximum stimulation was 2-fold over mock-treated DNA when 2.7% of the guanines were modified at the N-7 position, the major site of ethylation by EtMes in DNA. If a CpG site "hemiethylated" at guanine N-7 mimics a hemimethylated CpG site, we calculate that the enzyme has a relative affinity for hemiethylated CpG 18-fold above unmodified CpG. If ethylation of a dioxyphosphate oxygen of the phosphodiester bond is responsible for stimulation, the relative affinity could be much higher, up to 370-fold. PMID- 3856246 TI - Parathymosin alpha: a peptide from rat tissues with structural homology to prothymosin alpha. AB - A peptide, parathymosin alpha, containing approximately equal to 105 amino acid residues, has been isolated from rat thymus, and the sequence of the first 30 residues at the NH2 terminus has been determined. In this region, it shows 43% structural identity with thymosin alpha 1 and prothymosin alpha. The common sequences do not include residues 2-9, which accounts for the poor reactivity of parathymosin alpha with an antibody directed against this epitope in thymosin alpha 1. Parathymosin alpha appears to modulate the action of prothymosin alpha in protecting sensitive strains of mice against opportunistic infection with Candida albicans. PMID- 3856247 TI - Accurate initiation of rat ribosomal RNA gene transcription using a fractionated nuclear extract from normal liver and a hepatoma. AB - Nuclear extracts obtained from normal rat liver and from Morris hepatoma 3924A were fractionated by DEAE-Sephadex chromatography. The fraction eluted with 175 mM (NH4)2SO4 (DE-B), which contains greater than 90% of RNA polymerase I activity, supported accurate transcription of cloned rat rDNA. A similar fraction obtained from the cytosol had all of the factors required for rDNA transcription. However, its transcriptional activity was at most one-sixth that of the corresponding nuclear fraction, as determined by the amount of protein needed to produce a similar quantity of the transcript. Unfractionated nuclear or cytosol preparations did not yield an accurate transcript. Optimal KCl and magnesium concentrations for rDNA transcription were 60 mM and 5-7.5 mM, respectively. The extent of transcriptional activity was in the following order: hepatoma nuclear fraction DE-B greater than whole cell extract derived from rat mammary adenocarcinoma cells much greater than normal liver fraction DE-B. The hepatoma preparation produced at least 10 times the amount of transcript produced by the corresponding liver nuclear preparation. Transcriptional activity was proportional to the levels of RNA polymerase I and to the rate of rRNA synthesis in these tissues. PMID- 3856248 TI - Presence of two distinct regions in the coiled-coil structure of the streptococcal Pep M5 protein: relationship to mammalian coiled-coil proteins and implications to its biological properties. AB - The complete amino acid sequence of Pep M5, a biologically active 197-residue fragment comprising nearly half of the group A streptococcal M5 protein, has structural features characteristic of an alpha-helical coiled-coil protein. Fourier analyses of the nonpolar residues show strong periodicities based on repeats of 7 residues (7/2 and 7/3). Except for the nonhelical NH2-terminal 12 residue segment, the 7-residue periodicity in the distribution of nonpolar residues extends through the remainder of the Pep M5 molecule, with some discontinuities and irregularities. The molecule contains two distinct regions that differ in the pattern of distribution of the nonpolar and charged residues. The 7-residue pattern "a, b, c, d, e, f, g" in region 13-121 is atypical in that position "a" is predominantly occupied by asparagine, rather than nonpolar residues. On the other hand, the periodicity in region 122-196 is more typical of that found in other coiled-coil proteins, such as the myosin rod region, keratin, desmin, and vimentin, rather than tropomyosin. Although the periodicity in nonpolar residues is not highly regular, the predominance of basic and acidic residues in the inner "e" and "g" positions, respectively, suggests that ionic interactions between chains may contribute significantly to the stability of the coiled-coil. The distribution of charged residues in the outer positions within the two regions of the molecule is also distinct. The NH2-terminal region carries a significantly higher net negative charge than the COOH-terminal region, suggesting that the former region may play an important role in some of the biological functions of the Pep M5 molecule. PMID- 3856250 TI - Monte Carlo study of the GTP cap in a five-start helix model of a microtubule. AB - Earlier Monte Carlo studies on a single-helix model of the GTP cap at the end of a microtubule are extended here to a more realistic five-start helix model of the microtubule end. As in the earlier work, phase changes occur at the microtubule end: the end is either capped with GTP and growing slowly or uncapped and shortening rapidly, and these two regimes alternate (at a given tubulin concentration) at steady state. Macroscopic rate constants for the two-phase model are deduced from the Monte Carlo results. The macroscopic rate constants lead to properties that are in semiquantitative agreement with related experiments of Mitchison and Kirschner. PMID- 3856249 TI - Influence of solvent accessibility and intermolecular contacts on atomic mobilities in hemerythrins. AB - Thermal factor parameters (B values) have been compared from the refined crystal structures of the myohemerythrin from Themiste zostericola and of the octameric hemerythrin from Themiste dyscrita. These B values, which are directly related to atomic mobilities, were found to correlate rather closely with the solvent accessible areas within the respective crystals. Although protomeric units of the two molecules have exceptionally similar three-dimensional structures, there are marked differences between the patterns of relative atomic mobilities along the polypeptide chains. The differences correspond to lattice and oligomer contacts. An adjustment of the B values based on the fraction of accessible area occluded by contacts yields values that correlate well between the independent subunits and that should pertain more closely to those for the protomer free in solution. PMID- 3856251 TI - Identification of individual interferon-producing cells by in situ hybridization. AB - Individual interferon (IFN)-producing cells were identified by hybridization in situ followed by autoradiography. cDNAs corresponding to murine IFN-alpha and murine IFN-beta labeled by nick-translation to high specific activity (2-4 X 10(8) dpm/micrograms) with alpha-35S-labeled dATP were used as probes for hybridization with IFN mRNA in mouse C-243 cells induced with Newcastle disease virus. Control experiments with non-induced cells or with non-IFN-related labeled DNA monitored the specificity of the autoradiographic signal. Under optimal conditions of IFN induction, between 15% and 40% of the cells gave a hybridization signal with a mixture of IFN-alpha and -beta probes. Differential hybridization with either the IFN-alpha or -beta probe or a mixture of both, at three different time intervals after induction, revealed that only a small fraction of cells had detectable amounts of IFN-alpha mRNA, whereas in the majority of the positive cells IFN-beta mRNA was present. PMID- 3856252 TI - A widely distributed nuclear protein immunologically related to the microtubule associated protein MAP1 is associated with the mitotic spindle. AB - A 280-kDa protein (p280) confined to the nucleus of interphase cells becomes associated with the mitotic spindle during cell division. p280 is immunologically related to the microtubule-associated protein MAP1, as shown by cross-reactivity with monoclonal (8D12) and polyclonal antibodies raised against MAP1. However, p280 is distinct from MAP1 as judged by its lower molecular size, proteolytic degradation products, presence in preparations of purified nuclei from which MAP1 is absent, and absence from the cytosol fraction that contains MAP1. Immunofluorescence microscopy of cells in interphase using 8D12 reveals punctate staining of the nucleus, cytoplasmic microtubules, and the microtubule organizing center. Dividing cells display strong staining of the spindle, centrioles, and mid-body. The only exception to this staining pattern is marsupial Pt k2 cells that contain p280 in the nucleus and lack MAP1. These cells exhibit fluorescent staining of the nucleus and the microtubule organizing center when in interphase, of spindle and centrioles in mitosis, and show no staining of cytoplasmic and mid body microtubules. PMID- 3856253 TI - Interferon regulates c-myc gene expression in Daudi cells at the post transcriptional level. AB - c-myc gene mRNA is reduced by greater than 75% in the human lymphoblastoid cell line Daudi when growth is inhibited by treatment with human interferon beta (IFN beta). In the present communication, we describe the effect of IFN-beta treatment on transcription of the c-myc gene and on the steady-state level of c-myc mRNA in the cytoplasm of Daudi cells. The results show that, although the rate of c-myc transcription is not significantly different in nuclei isolated either from untreated cells or from those treated with IFN-beta for 3 or 24 hr, the level of c-myc mRNA in the cytoplasm is reduced by 60% within 3 hr of IFN-beta treatment. These results suggest that IFN-beta regulates the c-myc mRNA at a post transcriptional level. These results are in contrast to the regulation of two IFN beta-induced genes that under identical conditions are regulated in these cells at the transcriptional level. We have also detected induction of the (2' 5')oligoadenylate synthetase (2-5A synthetase) gene in IFN-beta-treated Daudi cells. Since certain c-myc transcripts have the capacity to form double-stranded RNA regions, we propose that one mechanism by which c-myc could be regulated post transcriptionally in IFN-beta-treated cells is by activating, through its own double-strandedness, the 2-5A synthetase/RNase L endonuclease system, which would cause selective degradation of the c-myc RNA. PMID- 3856254 TI - DNA sequence of the mouse H-2Dd transplantation antigen gene. AB - The inbred BALB/c mouse has three transplantation antigens, H2-Kd, H2-Ld, and H2 Dd. We present the complete nucleotide sequence of the H2-Dd gene as well as 777 residues of previously unpublished H-2Dd protein sequence. These data complete the sequences of all the BALB/c transplantation antigen genes and permit detailed comparison with each other and with their counterparts from the inbred C57BL/10 mouse. Transplantation antigens may differ from one another by as much as 5%-15% of their amino acid sequence for the external domains. These extensive differences may arise by gene conversion. The H-2D region of the BALB/c mouse encodes the H2-Dd and the H2-Ld genes. Serologic data suggest that at least two additional transplantation antigen molecules, H2-Rd and H2-Md, are encoded in the H-2D region of the major compatibility complex. Paradoxically, gene cloning studies have only identified the H2-Dd and the H2-Ld genes in the H-2D region. A complete DNA sequence of the H2-Dd gene shows that a variety of alternative splice sites exist throughout the gene, which may lead to additional gene products and may explain the multiplicity of H-2D-encoded polypeptides. PMID- 3856255 TI - Mutagenic DNA repair in Streptomyces. AB - Streptomyces fradiae JS6 (mcr-6) is defective in the repair of potentially lethal damage to DNA induced by mitomycin C (MC), hydroxylamine (NH2OH), methyl methanesulfonate (MMS), 4-nitroquinoline 1-oxide (NQO), N-methyl-N'-nitro-N nitrosoguanidine (MNNG), and ultraviolet light (UV), but it exhibits nearly normal sensitivity to ethyl methanesulfonate (EMS)-induced lethality. JS6 is substantially less mutable by MNNG, MMS, NQO, UV, NH2OH, and also EMS than is the parental strain. A spontaneous revertant of JS6 showed wild-type levels of resistance to all of these agents and wild-type levels of induced mutagenesis, indicating that a single mutation caused the multiple traits displayed by JS6. The mcr-6 gene product thus appears to control an error-prone (mutagenic) DNA repair system. Mediation of EMS mutagenesis by an error-prone repair pathway in S. fradiae, rather than by direct mispairing as in Escherichia coli, suggests that the streptomycetes have evolved more efficient error-avoidance mechanisms than those commonly observed in the single-celled eubacteria. PMID- 3856256 TI - Immunologic abnormalities of mice bearing the gld mutation suggest a common pathway for murine nonmalignant lymphoproliferative disorders with autoimmunity. AB - Mice bearing the autosomal recessive mutation gld have been shown to develop massive lymphadenopathy, hypergammaglobulinemia, and autoantibodies and to die prematurely with interstitial pneumonitis. In this study, lymphocytes from C3H gld and C3H +/+ mice were examined for a variety of phenotypic and functional characteristics. Spleens and lymph nodes of mutant mice were expanded by an aberrant population of Ly-5(B220)+ surface immunoglobulin negative cells that were Thy-1+Ly-1+ or Thy-1-Ly-1+. Cells from both tissues of mutant mice older than 8 wk were impaired in their ability to proliferate in response to allogeneic stimuli, and supernatants of cells stimulated with concanavalin A contained significantly reduced levels of interleukin 2. Cytotoxic T-lymphocyte responses of spleen and lymph node cells from C3H gld mice were normal at all ages tested. These results are strikingly similar to those obtained with C3H mice homozygous for the nonallelic autosomal recessive mutation lpr. We suggest that the similarities between the syndromes induced by these two mutations may reflect alterations in different enzymes that act in a common metabolic pathway of major importance to the differentiation and function of T cells. PMID- 3856257 TI - Somatic rearrangement of T-cell antigen receptor gene in human T-cell malignancies. AB - A cDNA clone representing the gene encoding the beta chain of the human T-cell antigen receptor has been isolated recently. By using fragments of this cDNA as hybridization probes in Southern blot analysis of restriction endonuclease digested genomic DNA, we have now examined the structure of the gene in DNA from 26 patients with acute leukemia and from 23 normal individuals. We have found that the T-cell antigen receptor gene has undergone somatic rearrangement in 14 of 14 patients with the phenotypic diagnosis of T-cell acute lymphoblastic leukemia. In this group of patients, similar patterns of rearrangement appear to occur in different patients. This finding suggests that there is either a limited repertoire of possible rearrangements or an association between the development of leukemia and specific patterns of rearrangement. DNA from 6 patients with acute myeloblastic leukemia, 6 patients with non-B, non-T acute lymphoblastic leukemia, and 23 nonleukemic individuals showed no rearrangement or polymorphism. One case of T-cell acute lymphoblastic leukemia, however, showed rearrangement of both the T-cell receptor beta chain and the constant region of the immunoglobulin gene. Studies with mixtures of DNAs from leukemic bone marrow cells and cultured skin fibroblasts, as well as with remission and relapse marrow DNAs from the same patients, indicate that this technique can detect 1% leukemic cells in a mixed population. In addition, DNA from the marrow of a patient in relapse contains a similar rearrangement to that found in the marrow sample taken at the time of diagnosis, which suggests that the original clone of leukemic cells was responsible for relapse. Our results indicate that assessment of rearrangement of the T-cell antigen receptor gene will be valuable in the diagnosis and management of leukemia and can be used to evaluate clonality in T-cell neoplasia. PMID- 3856258 TI - Involvement of the nerve growth factor-inducible large external glycoprotein (NILE) in neurite fasciculation in primary cultures of rat brain. AB - The nerve growth factor-inducible large external glycoprotein (NILE) has been found only on the surface of neuronal cells and Schwann cells. Since NILE seems to be concentrated on neurites, we have investigated its possible role in the development of neurites in primary cultures of rat brain. Cultures of embryonic day 14 (E14) whole brain and cultures of postnatal day 5 (P5) cerebellum were grown in the presence of Fab' fragments of antibody against NILE in an attempt to perturb the normal pattern of neurite development. For comparison, cultures were treated with two other reagents that recognize neuronal cell surface molecules: tetanus toxin, which binds to the GD1b and GT1 gangliosides, and Fab' fragments of antibody against neural cell adhesion molecule (N-CAM). Under the conditions used, none of the exogenous reagents affected neurite outgrowth, but specific effects on neurite fasciculation were observed. Anti-NILE inhibited fasciculation in cultures of E14 whole brain but had no effect on fasciculation in cultures of P5 cerebellum. Conversely, anti-N-CAM inhibited fasciculation in cultures of P5 cerebellum, which contain the adult form of N-CAM, but had little effect on fasciculation in cultures of E14 whole brain, which contain the embryonic form of N-CAM. Tetanus toxin had no effect on fasciculation in either culture system. Our results imply that NILE-mediated neurite-neurite interactions are stronger than N CAM (embryonic)-mediated interactions in the E14 brain cultures, whereas N-CAM (adult)-mediated interactions are stronger than NILE-mediated interactions in the P5 cerebellar cultures. PMID- 3856259 TI - Axonal transport of a heat shock protein in the rabbit visual system. AB - Intraocular injection of [35S]methionine was used to demonstrate the pronounced induction of a 74-kDa heat shock protein in the rabbit retina after a 3 degrees C increase in body temperature was generated by intravenous administration of D lysergic acid diethylamide. Two-dimensional polyacrylamide gel electrophoresis and fluorography revealed that the induced heat shock protein underwent axonal transport from retinal ganglion cells into the optic nerve and subsequently down the contralateral optic tract to synaptic termini in the visual projection area. Since the heat shock protein took more than 8 days to move down the optic nerve to the superior colliculus, it is transported by slow rather than by fast axonal transport. PMID- 3856260 TI - Anomalous interaction of the acetylcholine receptor protein with the nonionic detergent Triton X-114. AB - Integral membrane proteins that form water-filled channels through membranes often exist as aggregates of similar or identical subunits spanning the membrane. It has been suggested that the insertion into the membrane of the channel-forming domains of the subunits may impart unusual structural features to the membrane intercalated portions of the protein. To test this proposal, we have investigated the interaction of a multisubunit channel-forming integral membrane protein, the acetylcholine receptor protein, with the nonionic detergent Triton X-114. Whereas non-channel-forming integral membrane proteins that have heretofore been studied form mixed micelles with the detergent, the acetylcholine receptor was excluded from the Triton X-114 micelles. The structural implications of this result are discussed. PMID- 3856261 TI - Isolation and sequence of a human cytochrome P-450 cDNA clone. AB - A previously reported cDNA clone [pP450(1)] coding for a phenobarbital-inducible cytochrome P-450 variant of rat liver microsomal membranes, designated P 450e(U.C.), was used as a specific hybridization probe to screen a human liver cDNA library. Restriction mapping showed that two of the colonies isolated contained plasmids coding for overlapping regions of the same cDNA sequence. The clone [pHP450(1)] having the longer cDNA insert (1.25 kilobase pairs) was sequenced. The homology between the rat and human cDNAs is 62% in their coding regions but is only random (24%) in the 3'-noncoding nucleotides. The amino acid sequence deduced from the human cDNA is 50% identical to that of P-450e(U.C.). The homology increases to 72% if conservative changes in amino acid residues are permitted. The hydropathy profile of the polypeptide encoded by pHP450(1) is almost identical to that of P-450e(U.C.). Regions known to be highly conserved in cytochrome P-450 isozymes isolated from rat, rabbit, and mouse were found to be conserved in the amino acid sequence derived from pHP450(1). Analysis by Southern blotting indicated that the human cytochrome P-450 encoded by pHP450(1) is part of a multigene family. PMID- 3856262 TI - Specific modulation of the transcription of cloned avian vitellogenin II gene by estradiol-receptor complex in vitro. AB - Avian vitellogenin-cauliflower mosaic virus hybrid gene is effectively transcribed in vitro in the homologous embryonic liver nuclei system. The transcription of the hybrid gene is modulated by the addition of an estradiol receptor preparation that has been shown to bind selectively to an upstream region of cloned vitellogenin gene. Stimulation of the transcription of cloned vitellogenin hybrid gene by estradiol receptor is alpha-amanitin sensitive, hormone dependent, and promoter specific. Simian virus 40 and Escherichia coli promoters are not stimulated by the estradiol-receptor complex. The endogenous silent vitellogenin II gene (wild type) present in the nuclei is not turned on by the addition of estradiol-receptor complex. Deletion or inversion of the DNA sequence where the estradiol-receptor complex binds results in the complete suppression of the in vitro stimulation of transcription by estradiol receptor. Correct initiation of the transcription was demonstrated by primer extension studies of the newly synthesized RNA. PMID- 3856263 TI - A fidelity assay using "dideoxy" DNA sequencing: a measurement of sequence dependence and frequency of forming 5-bromouracil X guanine base mispairs. AB - DNA replication fidelity has been assayed by using a modified DNA sequencing reaction. In one experimental approach, dideoxycytidine 5'-triphosphate (ddCTP) was used as a chain terminator during replication of M13 phage DNA by the large fragment of DNA polymerase I. The deoxyribonucleotide analogue BrdUTP was used to compete against ddCTP-induced chain terminations as an assay for B X G base mispairing (B represents bromodeoxyuridine when the analogue is present as a base pair or base mispair). By comparing BrdUTP to dCTP for competition against ddCTP, an average misincorporation frequency for BrdUMP of 0.2% was found. A similar average misincorporation frequency has been measured previously for the incorporation of radioactively labeled BrdUMP and dCMP into the synthetic template-primer poly-[d(G,T)] X oligo(dA). The advantage of the sequencing method is that an error frequency is determined for each template guanine in a defined DNA sequence, thus providing information on the effect of neighboring base sequences on fidelity. Misincorporation frequencies varied no more than 5-fold among 50 template guanines tested. The approach used here is not limited for use with nucleotide analogues but is generally applicable in determining misincorporation frequencies and sequence specificities for any deoxynucleoside triphosphate substrate. In a second experimental approach, base mispairing between bromouracil and guanine was demonstrated directly by using 5 bromodideoxyuridine 5'-triphosphate (BrddUTP). A comparison of chain terminations attributable to BrddUTP and to dideoxythymidine 5'-triphosphate (ddTTP) revealed that B X A and T X A base pairs formed at about the same rate, whereas B X G mispairs occurred 4-10 times more frequently than T X G. The elevation in the frequency of B X G over T X G mispairs is consistent with the mutagenic behavior of the base analogue. PMID- 3856264 TI - Laminin binds specifically to sulfated glycolipids. AB - Previous studies of the agglutination of erythrocytes by the basement membrane glycoprotein laminin have suggested that laminin binds to gangliosides [Kennedy, D.W., Rohrbach, D.H., Martin, G.R., Momoi, T. & Yamada, K.M. (1983) J. Cell. Physiol. 114, 257-262]. Based on the following evidence, however, we find that laminin binds specifically to sulfatides, not gangliosides. Monogalactosyl sulfatides, purified from sheep erythrocytes with a yield of 4.3 mg/kg of packed cells, bound laminin with high affinity as did authentic bovine brain sulfatide (galactosylceramide-I3-sulfate). The binding activity of these lipids and of total erythrocyte lipids was stable to alkali and neuraminidase treatment but labile to dilute acid under conditions that destroy sulfatides but not gangliosides. Of various glycolipid and phospholipid standards tested, only sulfatides bound laminin with high affinity. Sulfatide binding and agglutinating activities of proteolytic fragments of laminin indicated that the globular end regions of the 200-kDa subunits are required for both activities. Thus, monogalactosylsulfatides, and possibly other more complex sulfated glycolipids, are probably involved in the agglutination of erythrocytes. These results also suggest a physiological function of sulfatides in cell adhesion. The agglutination of erythrocytes by fibronectin is also inhibited by gangliosides [Yamada, K.M., Kennedy, D.W., Grotendorst, G.R. & Momoi, T. (1981) J. Cell. Physiol. 109, 343-351]. Fibronectin, however, did not bind to sulfatides with high affinity but rather bound with low affinity to all anionic lipids tested, including phospholipids, gangliosides, and sulfatides. PMID- 3856265 TI - Exclusive nuclear location of estrogen receptors in Squalus testis. AB - An estrogen (E)-binding molecule having both occupied and unoccupied sites is restricted to nuclear subfractions in the testis of the spiny dogfish (Squalus acanthias). We investigated the hypothesis that a species characterized by high body-fluid osmolarity (1010 mosM) has an estrogen receptor (ER) that binds to chromatin with high affinity and consequently resists redistribution during tissue processing. Although the steroid binding and sedimentation properties of the Squalus nuclear ER conformed to those of classical ER, its elution maximum from DNA-cellulose was unusually high (0.55 M NaCl). A tendency to adhere tightly to cell nuclei was reflected in the high salt concentration (0.43 M KCl) required to extract 50% of the receptors from the nuclear compartment during homogenization and in the stability of the nuclear ER population in the presence of high concentrations of a nonionic solute (urea) or increased buffer volume. Mixing and redistribution experiments showed that nuclear ER could be quantitatively and qualitatively measured in cytosolic extracts, ruling out the possibility that soluble receptors were being masked. Although Squalus oviduct ER was similar to that of testis, ER in the testis and liver of a related elasmobranch (Potamotrygon) that maintains osmotic equilibrium at 300 mosM more closely resembled mammalian ER in its elution maximum from DNA-cellulose (0.22 M NaCl) and cytosolic/nuclear ratios in low-salt buffers. We conclude that Squalus testis has a single ER pool located exclusively in the nuclear compartment. These observations support a revised concept of steroid action and further indicate that the chromatin affinity of the hormone-ER complex is an important factor in determining subfractional distribution during tissue processing. PMID- 3856266 TI - Recombination in mouse L cells between DNA introduced into cells and homologous chromosomal sequences. AB - In this paper, we show that DNA added to mouse L cells by the calcium phosphate method can be inserted into the genome of those cells by homologous recombination. The insertion event is detected because it reconstructs a functional thymidine kinase (tk) gene from two defective genes that share 320 base pairs of homology. One of the genes is missing its 5' portion (tk delta 5') and is in the cell's chromosome, and the other is missing its 3' portion (tk delta 3') and is in the introduced DNA. Gene reconstruction by homologous insertion is relatively inefficient; approximately one Tk+ transformant is produced per 10(6) cells per 4 micrograms of added tk DNA, a frequency of about 10(-5) that of normal tk gene transformation. The Tk+ transformants produced by homologous recombination contain Sma I and Pvu II fragments that are diagnostic of the intact tk gene, contain a herpesvirus-specific thymidine kinase activity, and can transfer the Tk+ phenotype to Tk- cells by DNA-mediated gene transfer. Two surprising observations made in the course of these studies were that only 1 of 10 Tk- cell lines containing defective tk genes could be transformed to Tk+ by homologous insertion of the complementary defective tk gene and that relatively little illegitimate insertion of introduced tk DNA into cellular DNA was detected in those cells that were transformed to Tk+ by homologous recombination. PMID- 3856268 TI - Three-dimensional structure of thaumatin I, an intensely sweet protein. AB - Thaumatin and monellin are the two sweetest compounds known to man--about 100,000 times sweeter than sugar on a molar basis and 3000 times on a weight basis. These proteins represent a unique class of proteins that are taste-active. We report the three-dimensional structure of thaumatin I at 3.1 A resolution. PMID- 3856267 TI - A minimal ribosomal RNA: sequence and secondary structure of the 9S kinetoplast ribosomal RNA from Leishmania tarentolae. AB - The portion of the Leishmania tarentolae kinetoplast maxicircle DNA encoding the 9S RNA gene was sequenced, and the 5' and 3' ends of the transcript were determined. A secondary structure for the 9S RNA was determined based on the Escherichia coli 16S model. The 610-nucleotide 9S RNA exhibits a minimal secondary structure in which all four domains of the E. coli 16S structure are preserved. Within domains, however, some stems and loops have been greatly reduced or eliminated entirely. It is presumed that these reduced domains represent the minimal essential small ribosomal RNA secondary structures necessary for a functional ribosome. Alignment of the L. tarentolae 9S rRNA sequence with the published Trypanosoma brucei 9S rRNA sequence shows a nucleotide similarity of 84% and a transversion/transition ratio of 1.66. PMID- 3856269 TI - Effects of fibrinogen-binding tetrapeptides on mechanical properties of fine fibrin clots. AB - The tetrapeptides Gly-Pro-Arg-Pro and Gly-His-Arg-Pro, analogs of the amino termini of the alpha and beta chains of fibrin monomer, respectively, were introduced by diffusion into fine unligated fibrin clots. Gly-Pro-Arg-Pro decreased the shear modulus of elasticity progressively and at a concentration of 5.8 mM the clot was eventually liquefied. The decrease in elastic modulus was accompanied by enormously enhanced viscoelastic creep under shear stress and irrecoverable deformation after removal of stress. However, the differential compliance (or modulus) for clots containing the tetrapeptide remained constant during creep and creep recovery, so the structure rearranged under stress without any permanent damage. Ligation with factor XIIIa and calcium largely eliminated these effects. From these changes in mechanical properties, it appears that Gly Pro-Arg-Pro competes for binding sites, with consequent depolymerization. The tetrapeptide Gly-His-Arg-Pro at comparable concentrations decreased the modulus and increased the creep to a lesser degree; when combined with Gly-Pro-Arg-Pro it enhanced the effectiveness of the latter. PMID- 3856270 TI - The Ca2+-binding protein parvalbumin: molecular cloning and developmental regulation of mRNA abundance. AB - Parvalbumin (PV) is a Ca2+-binding protein found only in vertebrates. It is postulated to serve as a soluble relaxing factor in fast mammalian muscle. We have isolated a rat PV cDNA clone and used this as a probe to examine changes in PV mRNA during muscle and brain development. A cDNA library was constructed in PUC8/PUC9 plasmid vectors from adult poly(A)+ RNA isolated from rat gastrocnemius muscle. The library was screened with a 17-mer oligonucleotide encoding amino acids 28-33 of rat PV. One recombinant (9f) was confirmed as a PV clone by DNA sequencing and was shown to contain 73% of the protein coding sequence. Hybridization of clone 9f to RNA separated by electrophoresis revealed two species 700 and 1100 nucleotides long but genomic blotting indicates that PV may be a single copy gene. Highest levels of PV mRNA are found in the gastrocnemius, which is a fast contracting/relaxing muscle. Skin contains the next highest amount of PV mRNA followed, in order, by brain and the slow twitch soleus muscle. Rat muscle PV mRNA levels increase 15- to 20-fold between postnatal days 4 and 20 as measured by dot blot hybridization of total RNA, whereas only a slight increase was observed when young and adult brains were compared. The changes in PV mRNA during development appear to be selective, because mRNA coding for the structurally homologous Ca2+-binding protein calmodulin (CaM) was found to change only slightly in muscle. However, CaM mRNA levels decrease during the early days of brain ontogeny. Thus, the mRNAs that encode the homologous Ca2+-binding proteins PV and CaM appear to be developmentally regulated in a tissue-specific manner. PMID- 3856271 TI - Interaction of mouse mammary epithelial cells with collagen substrata: regulation of casein gene expression and secretion. AB - Mouse mammary epithelial cells (MMEC) secrete certain milk proteins only when cultured on floating collagen gels. We demonstrate here that modulation of milk proteins by substrata is manifested at several regulatory levels; (i) Cells cultured on floating collagen gels have 3- to 10-fold more casein mRNA than cells cultured on plastic or attached collagen gels. (ii) Cells on the latter two "flat" substrata, nevertheless, synthesize a significant amount of caseins, indicating that the remaining mRNA is functional. (iii) Cells on all substrata are inducible for casein mRNA and casein proteins by prolactin, but the extent of induction is greater on collagen than that on plastic--i.e., the substratum confers an altered degree of inducibility. (iv) Cells on all substrata synthesize casein proteins at rates proportional to the amount of casein mRNA, but the newly synthesized caseins in cells on plastic are degraded intracellularly, whereas those synthesized by cells on floating gels are secreted into the medium. (v) Cells on all substrata examined lose virtually all mRNA for whey acidic protein despite the fact that this mRNA is abundant in the mammary gland itself; we conclude that additional, as-yet-unknown, factors are necessary for synthesis and secretion of whey acidic protein in culture. PMID- 3856272 TI - On the origin of species of fibronectin. AB - Multiple different subunits of fibronectin are known to occur and their origin has been unclear. Recent results showing that a single fibronectin gene can give rise to several different mRNAs by alternative splicing suggested an explanation for some of this diversity of fibronectin subunits. Because the alternative splicing events occur within the coding region, the mRNAs differ in coding potential. We have prepared recombinant phage containing a rat fibronectin cDNA segment that is present in some fibronectin mRNAs and not in others. This segment was inserted in the beta-galatosidase gene of lambda gt11, and fusion protein produced by lysogens of the recombinant phage was purified and used as immunogen. The resulting antisera recognized some subunits of rat and hamster fibronectins but not others, indicating that inclusion or removal of this segment gives rise to mRNAs that encode different fibronectin subunits. In particular, presence or absence of a 95 amino acid segment appears to account for differences in size among the subunits of plasma fibronectin, whose origin is therefore explained by alternative patterns of RNA splicing. PMID- 3856273 TI - Enzyme-controlled scavenging of ascorbyl and 2,6-dimethoxy-semiquinone free radicals in Ehrlich ascites tumor cells. AB - The rate of scavenging by Ehrlich ascites cells of anionic ascorbyl and 2,6 dimethoxy-p-semiquinone free radicals has been investigated by electron spin resonance spectroscopy both for viable cells and for subcellular fractions obtained by differential centrifugation. The scavenging activity is concluded to be associated with an NAD(P)H enzyme containing an active sulfhydryl group. Attempts to identify the enzyme with the reported properties of either semi dehydro-ascorbate reductase or DT-diaphorase have not been successful. The overall free-radical scavenging activity for viable cells is dextrose dependent and is controlled by the coulombic barrier associated with the cell-surface charge. The cytotoxicity of the mixture of ascorbic acid with 2,6-dimethoxy-p benzoquinone is concluded to result from a loss of NAD(P)H reducing power in the cells. PMID- 3856274 TI - Calcium channel antagonists inhibit the acrosome reaction and bind to plasma membranes of sea urchin sperm. AB - As a prerequisite to fertilization, sea urchin sperm undergo an acrosome reaction that is mediated in part by increased permeability to Ca2+, with an attendant rapid, massive intracellular Ca2+ accumulation. The acrosome reaction is inhibited by Ca2+ channel antagonists, including verapamil, D600, and dihydropyridines such as nitrendipine, nimodipine, and nisoldipine. To examine the interaction of Ca2+ antagonists with sperm, a plasma membrane preparation enriched for Na+,K+-ATPase was isolated from sea urchin sperm. These plasma membranes specifically bound [3H]nitrendipine and [3H]verapamil at concentrations similar to those that inhibit the acrosome reaction. The binding of verapamil was sigmoidal and half-maximal at 1 microM. There was a high specificity in the binding interaction, since by competition binding verapamil, (-)-D600, and (+) D600 had different relative Kd values, 11, 2.5, and 0.5 microM, respectively. These data suggest that sperm mediate the Ca2+ influx required for induction of the acrosome reaction via Ca2+ channels with properties similar, but not identical, to those of other excitable tissues. PMID- 3856275 TI - Tissue-specific levels of human glucose-6-phosphate dehydrogenase correlate with methylation of specific sites at the 3' end of the gene. AB - Glucose-6-phosphate dehydrogenase (G6PD) is a ubiquitous enzyme that supplies the cell with NADPH required for a variety of reductive reactions and biosynthetic processes. Therefore, the gene G6PD, located in mammals on the X chromosome, that specifies G6PD can be regarded as a typical housekeeping gene. We have investigated the expression of human G6PD in eight different fetal and adult tissues by determining the level of enzyme activity, the level of G6PD mRNA, and the methylation pattern of the 3' end of the gene, for which we have nucleic acid probes. By combining sequence information with results of Southern blot analysis of DNA samples digested with the methylation-sensitive restriction enzyme Hpa II, we have identified five specific sites that are unmethylated in all tissues examined, a number of sites that are uniformly methylated, and a number of sites that are sometimes methylated. A subset of Hpa II sites, designated on our restriction map as H37-H55, exhibit positive correlation between degree of methylation, level of mRNA, and level of G6PD activity. A comparison of these methylation patterns with those we previously have observed in the G6PD gene on the inactive X chromosome [Toniolo, D., D'Urso, M., Martini, G., Persico, M.G., Tufano, V., Battistuzzi, G. & Luzzatto, L. (1984) EMBO J. 3, 1987-1995] indicates that different sites are associated with X-inactivation and with the regulation of G6PD on the active X chromosome. We conclude that this housekeeping gene is subject to tissue-specific transcriptional regulation, which in turn correlates with methylation of specific sites located at and near the 3' end of the gene. PMID- 3856277 TI - Strong antitumor activities of IgG3 antibodies to a human melanoma-associated ganglioside. AB - Three mouse monoclonal IgG3 antibodies, 2B2, IF4, and MG-21, recognize a GD3 ganglioside antigen that is expressed at the cell surface of most human melanomas. All three antibodies mediate antibody-dependent cellular cytotoxicity (ADCC) in vitro when tested with human lymphocytes as effector cells in a 2-hr or 4-hr 51Cr-release test, and one antibody, MG-21, also gives strong complement dependent cytotoxicity with human serum. Antibody 2B2, which gives ADCC also in the presence of mouse lymphocytes, inhibited the outgrowth of a human melanoma in nude mice, but antibody IF4, which showed no ADCC with mouse lymphocyte effectors, did not. PMID- 3856278 TI - Isolation of a cDNA clone encoding pancreatic polypeptide. AB - We have isolated a cDNA clone encoding pancreatic polypeptide from a cDNA library constructed with RNA from an endocrine neoplasm of the human pancreas. The cDNA was inserted into plasmid pBR322 and the plasmid was cloned in Escherichia coli. Oligonucleotides (sequence in text) specific for the amino acid sequence (sequence in text) of pancreatic polypeptide were used as hybridization probes. The pancreatic polypeptide cDNA isolated was 465 base pairs long and encoded a peptide of 95 amino acids in the coding region. The 36-amino acid sequence of pancreatic polypeptide was flanked by a 29-amino acid putative leader sequence at the amino terminus and a connecting tripeptide (Gly-Lys-Arg) followed by a 27 amino acid peptide at the carboxyl terminus. The first 20 of the amino acids in the carboxyl-terminal heptacosapeptide were identical to the structure of human pancreatic icosapeptide with the single exception of an isoleucine substitution for valine in the 18th position. This alteration results from an A----G substitution in the nucleotide sequence of the cDNA and may represent a genetic variation or a point mutation in the pancreatic polypeptide cDNA. PMID- 3856276 TI - Characterization of an HLA DR beta pseudogene. AB - The class II molecules of the human major histocompatibility complex include the DR, DC, and SB antigens, each composed of an alpha and a beta polypeptide chain. We have isolated a DR beta gene in overlapping cosmid clones made from genomic DNA of a Dw4/DR4 homozygous individual. This gene consists of six exons and spans greater than 20 kilobases. Upon sequencing, it was found to possess several deleterious mutations, each capable of rendering the gene nonfunctional: (i) four splice junctions deviate from the G-T/A-G rule; (ii) two premature termination codons are present in the first domain exon; (iii) a 2-base-pair insertion causes a translational frame shift in the second domain exon. In addition, several amino acid residues that are conserved in all known expressed beta chains have been replaced in the amino acid sequence predicted from the pseudogene. Analysis of the pattern of nucleotide substitutions in the second domain exon suggests that most amino acid replacements occurred after the gene was inactivated. The inactivation may have been caused by insertion of a Kpn I repeat 5' to the promoter region, thereby interfering with transcription of the gene through removal of transcriptional enhancer elements. The DR beta pseudogene seems to be present also in other DR4 individuals. PMID- 3856279 TI - High glucose concentrations partially release hexokinase from inhibition by glucose 6-phosphate. AB - The phosphorylation of glucose by human erythrocyte hexokinase follows classical Michaelis-Menten kinetics; hexokinase manifests maximum activity at 5 mM glucose, and no further increase in activity can be measured at higher glucose concentrations. However, the erythrocytes of diabetics and normal erythrocytes incubated with high concentrations of glucose contain increased concentrations of glucose 6-phosphate. To elucidate the mechanism of accumulation of glucose 6 phosphate when erythrocytes are exposed to high glucose concentrations, hexokinase activity was examined in the presence of naturally occurring inhibitors, such as glucose 1,6-bisphosphate, 2,3-diphosphoglycerate, ADP, and glucose 6-phosphate at physiological concentrations. Without inhibitors or in the presence of glucose 1,6-bisphosphate,2,3-diphosphoglycerate, and ADP, maximum hexokinase activity was observed at 5 mM glucose concentration. On the contrary, in the presence of glucose 6-phosphate, hexokinase activity increased at glucose concentrations greater than 5 mM; inhibition by glucose 6-phosphate was partially competitive with glucose. The relief by glucose of glucose 6-phosphate inhibition of hexokinase is a possible explanation of the increased glucose 6-phosphate level in diabetic erythrocytes. PMID- 3856280 TI - Nerves in the spine of a sea urchin: a neglected division of the echinoderm nervous system. AB - Electrical stimulation of the primary spines (greater than 10 cm long) of the tropical sea urchin Diadema antillarum elicits graded compound action potentials that are conducted at a constant speed of approximately equal to 27 cm/sec. Ion substitution experiments suggest that these are due to the summation of calcium spikes. Structural studies have revealed the presence of up to 21 regularly disposed nerves within the spine shaft, each nerve bundle including greater than 1000 neurites in the basal region, narrowing to slender groups of processes near the spine tip. The neurites in each nerve range in diameter from less than 0.1- approximately equal to 2 micron. Most appear to be distal processes of presumed sensory perikarya situated at the level of the tissue cone surrounding the spine base, or more proximally, although some neurites may arise from perikarya near the spine tip. These nerve tracts are thought to correspond to the nerve fibers described by Hamann [(1887) Jena Z. Naturwiss. 21, 114-176] almost a century ago in spines of Centrostephanus longispinus and, thus, to represent a long-neglected region of the echinoid nervous system. PMID- 3856281 TI - Dissociation from albumin: a potentially rate-limiting step in the clearance of substances by the liver. AB - The hepatic uptake rate for certain albumin-bound drugs and metabolites correlates poorly with their equilibrium unbound concentration in the plasma, suggesting that binding equilibrium may not always exist within the hepatic sinusoids. Currently available models for the uptake process assume binding equilibrium and, thus, cannot be used to investigate this possibility. This report presents a more general model that treats plasma-bound and free concentrations separately. A solution is provided that specifies the hepatic uptake rate as a function of the total plasma concentrations of the transported substance and of binding protein and the rate constants for influx, efflux, elimination, association, dissociation, and flow. Analysis of this solution indicates that hepatic uptake may be limited by the rate of plasma flow, dissociation from the binding protein, influx into the liver, cellular elimination, or any combination of these processes. The affinity and concentration of the binding protein strongly influence which of these steps are rate-limiting in any given case, and binding equilibrium exists within the hepatic sinusoids only for binding protein concentrations greater than a specified value (the ratio of the uptake and association rate constants). The precise conditions under which each step is rate-limiting and the kinetic behavior expected when two or more steps mutually limit uptake are provided. The results are compatible with previously reported data for the uptake of certain albumin-bound ligands such as bilirubin, and they offer an alternative to attributing these kinetics to the presence of an albumin receptor. PMID- 3856282 TI - Sodium salicylate does not prevent the inhibitory effect of indomethacin on thromboxane formation in human blood ex vivo. AB - Thromboxane formation during spontaneous blood clotting as well as plasma levels of TXB2 and 6-keto-PGF1 alpha, the stable metabolites of TXA2 and prostacyclin, were measured by radioimmunoassay two hours after oral administration of indomethacin (25 mg), sodium salicylate (250 mg) and their combination to human volunteers. Indomethacin effectively suppressed the tremendous formation of TXB2 during blood clotting whereas sodium salicylate had only a slight inhibitory effect on TXB2 synthesis. The combination of indomethacin and sodium salicylate inhibited the formation of thromboxane even slightly more effectively than indomethacin alone. Plasma TXB2 level was decreased after the combination treatment but not after administration of either of the drugs alone. Plasma 6 keto-PGF1 alpha level was not changed by any of the treatments. The present study suggests that simultaneous oral administration of sodium salicylate together with indomethacin at a combination ratio of 10 to 1 does not significantly interfere with the inhibitory effects of indomethacin on thromboxane synthesis in human blood ex vivo. PMID- 3856283 TI - Plasma essential fatty acids in pure and mixed race American Indians on and off a diet exceptionally rich in salmon. AB - Eskimos on a traditional diet have unusually low prevalences of cardiovascular disease and cancer. One possible reason is the high intake of eicosapentaenoic acid (EPA) which is thought to account for the high EPA and low arachidonic acid (AA) levels in Eskimo plasma. People who also consume a traditional diet exceptionally rich in EPA are the Indians of the west coast of Vancouver Island. There are about 12,000 of these people and their traditional diet has been affected much less than that of the Eskimos. When on their traditional diet the Vancouver Island Indians, like the Eskimos, have high EPA and low AA levels in plasma. When eating European food, EPA levels are in the European range, but AA levels are still exceptionally low, a finding also reported from Eskimos living in Denmark. In a small mixed race group, AA levels were intermediate between those in pure Indians and in Europeans. The high EPA levels in Eskimos and West Coast Indians are related to diet. The low AA levels, in contrast, are probably genetically determined. Unusual disease patterns in these populations cannot be entirely attributed to diet. PMID- 3856284 TI - Inhibition of arachidonic acid metabolism is not involved in dexamethasone induced growth inhibition in embryonic palatal development. AB - Previous studies have shown that glucocorticoids induce cleft palate in susceptible strains of mice and inhibit proliferation of palatal mesenchyme cells in vivo and in culture. The present study shows that the synthetic glucocorticoid, dexamethasone (DEX), inhibits serum-stimulated arachidonic acid release in cultured mouse palatal mesenchyme cells. Arachidonic acid could neither prevent the DEX effect on cell proliferation when added in culture nor prevent glucocorticoid-induced cleft palate when administered in vivo. Furthermore, the time course for DEX-induced inhibition of arachidonic acid release (maximal by 5h) is markedly different from the time courses for both inhibition of cell proliferation in culture and cleft palate induction in vivo (3 to 4 days). These results suggest that both DEX-induced cleft palate formation and inhibition of palatal cell proliferation arise from some mechanism other than a DEX-induced inhibition of arachidonic acid metabolism. PMID- 3856285 TI - Immunoreactive thromboxane B2 and 6-keto-prostaglandin F1 alpha in neonatal hyperbilirubinemia. AB - To study the effects of hyperbilirubinemia on platelet thromboxane A2 (TxA2) and vascular prostacyclin (PGI2) production in newborn infants, the stable metabolites of these prostanoids, thromboxane B2 (TxB2) and 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha), respectively, were studied in 48 hyperbilirubinemic (serum total bilirubin concentrations between 100 and 320 mumol/1) term infants before and after phototherapy at the age of 2-10 days. The effect of bilirubin on platelet TxA2 production was also determined in vitro. The production of TxB2 during spontaneous clotting in infants with moderate hyperbilirubinemia (serum total bilirubin 171-250 mumol/1) was higher than that in infants with mild (serum bilirubin 100-170 mumol/1) or marked (serum bilirubin greater than 250 mumol/1) jaundice. There was, in addition, an inverse correlation (r = -0.625, p less than 0.01, n = 20) between TxB2 formation and serum total bilirubin concentrations in infants with total bilirubin concentrations over 170 mumol/1. Platelet TxB2 production was enhanced at low (200 mumol/1), but decreased at high (400-1600 mumol/1) concentrations of bilirubin in vitro. Although phototherapy reduced the serum bilirubin levels, it did not change the TxB2 generation. Neither hyperbilirubinemia nor phototherapy had any effect on the plasma 6-keto-PGF1 alpha levels. The results indicate a dual effect of bilirubin on the TxA2 production in neonatal platelets. This may contribute to the hemostatic disturbances in neonatal hyperbilirubinemia. PMID- 3856286 TI - The extended trapezius musculocutaneous flap for cranio-orbital facial reconstruction. AB - The use of the extended posterior trapezius muscle skin flap for cranio-orbital facial reconstruction is presented. Its enormous arc of rotation allows it to reliably reconstruct massive defects of the upper face with the orbit at the center of the defect; i.e., this flap will reach well beyond the supraorbital rim and across the midline. Its application for the immediate reconstruction of massive deformities following resection of tumors of the orbit and cranial base appears justified and helps avoid the major morbidity normally associated with such resections. PMID- 3856287 TI - Cephalometric analysis of postsurgical skeletal changes following mandibular advancement surgery. PMID- 3856288 TI - Current advances in oral and maxillofacial surgery. PMID- 3856289 TI - Changing patterns of dental caries. PMID- 3856290 TI - Revolutions and renaissance in dentistry. PMID- 3856291 TI - The role of the dentist in archaeologic investigation: an unusual facial fracture with healing occurring 3,000 years ago. PMID- 3856292 TI - Granulocytic sarcoma (chloroma): CT manifestations. AB - Nests of granulocytic tumor cells in patients who have myelogenous leukemia are termed chloromas. Eight cases of chloroma seen on CT were reviewed. Lymph nodes, subcutaneous tissues, peritoneum, pleural space, pelvis, and portal hepatis were involved. Two patients exhibited chloroma as the sole manifestation of their disease during bone marrow remission. The extracranial appearance of chloroma on CT is that of small, nonenhancing, nodular densities that resemble lymphoma. Cranial involvement is characteristically in the orbit. The central nervous system appearance is variable, however, and high attenuation masses may occur that mimic lymphoma, hematoma, and metastatic neuroblastoma. The recognition of these lesions is important, since radiation, not chemotherapy, is often the preferred treatment for localized chloroma. PMID- 3856293 TI - Oral PGE2 inhibits gastric acid secretion in man. AB - The effect of oral prostaglandin E2 (PGE2) on gastric acid secretion was examined in healthy subjects. The gastric secretion was stimulated by a modified shamfeeding procedure. Each subject underwent one control test and three tests with intragastrically administered graded doses of PGE2: 0.5, 1.0 and 2.0 mg. Oral PGE2 significantly suppressed the peak and total acid response to vagal stimulation. The total acid output in controls was 27.5 +/- 3.2 mmol/90 min and 20.8 +/- 2.8, 15.8 +/- 2.2 (p less than 0.01) and 15.9 +/- 3.8 (p less than 0.005) mmol/90 min in test series with 0.5, 1.0 and 2.0 mg PGE2 respectively. The two higher doses were equally inhibitory to an average 40%. Gastric outputs of sodium and potassium in response to modified shamfeeding were reduced by PGE2. In controls there was a significant release of plasma-gastrin in response to shamfeeding. Plasma-gastrin was apparently suppressed after the two lower doses of PGE2 but 2.0 mg PGE2 gave an elevation similar to controls. Thus the study demonstrates that oral natural PGE2 suppresses the gastric acid secretion in man. The absence of such an effect in prior studies has been one of the objections against an acid regulatory action of endogenously formed prostaglandins. The present results do not support this argument. PMID- 3856294 TI - The measurement of human endometrial prostaglandin production. A comparison of two in vitro methods. AB - Two in vitro methods for measuring human endometrial prostaglandin production were compared. Endometrial samples from eight patients were incubated over eight hours by a perifusion and a superfusion technique. The collected fractions were assayed by radioimmunoassay for PGE2 and PGF2 alpha. There was no significant difference between the perifusion and superfusion methods for the pattern and amount of PGE2 and PGF2 alpha production with time. Significantly higher production levels of PGE2 and PGF2 alpha were found in secretory phase endometria than in proliferative phase endometria. Histological examination of the tissue specimens by light and electron microscopy showed that both methods caused gross tissue damage after eight hours experimentation. The superfusion method produced more morphological damage than the perifusion method. However, no tissue damage could be detected after one hour of incubation with either method. Over an eight hour period neither the perifusion nor the superfusion technique appears to be a good indicator of in vivo endometrial prostaglandin production. Either technique used for only one to two hours may better reflect the in vivo situation. PMID- 3856296 TI - Motivation: the manager's challenge. PMID- 3856295 TI - Techniques for porcelain shade consistency. PMID- 3856297 TI - Current advances in removable prosthodontics. PMID- 3856298 TI - [Paget's osteosarcoma: prevention, diagnosis, attitude, prognosis. Apropos of a case]. PMID- 3856299 TI - Infection control in the dental laboratory. PMID- 3856300 TI - Anchoring the periodontal splint. PMID- 3856301 TI - P-M-M: how to plan, measure, and motivate your way to improved productivity and quality standards. PMID- 3856302 TI - Taking the mystery out of the Commission on Dental Accreditation. PMID- 3856303 TI - CDT today: the orthodontic specialty examination. PMID- 3856304 TI - The big, BIG question: how much is my laboratory worth? PMID- 3856306 TI - CDT today: can we schedule an examination here? PMID- 3856305 TI - Classic marketing principles for the modern dental laboratory. PMID- 3856307 TI - The future of medical practice. PMID- 3856308 TI - Orbital causes of red eye. Differential diagnosis in essential to initiate appropriate and possibly life-saving therapy. PMID- 3856309 TI - Alcoholism and the role of the physician. PMID- 3856310 TI - Cultural and social aspects of alcohol use: general and local issues. PMID- 3856311 TI - Treating alcoholism in Rhode Island: 1974-1984. PMID- 3856312 TI - Platelet 5-hydroxytryptamine transport and storage in myeloproliferative disorders. AB - Platelets of patients with myeloproliferative disorders (MD) such as polycythaemia vera (PV), chronic myelogenous leukaemia (CML), idiopathic myelofibrosis (IM) and essential thrombocythaemia (ET) have been found to have low 5HT levels measured both by a fluorimetric and a liquid chromatographic assay. Km and Vmax for platelet active uptake of 3H-5HT were not significantly different in controls and patients. Inhibition of 5HT reuptake by imipramine or induction of moderate release by fenfluramine were not sufficient to distinguish the group of MD platelets from controls, although some patients had less of a tendency to retain intraplatelet amine. The low platelet 5HT content found in our patients seems not to be the consequence of disturbed active transport of 5HT across platelet membrane. Although defective storage of this amine within the cell is probable, the results of the present study do not rule out the possibility that platelets from MD patients undergo in vivo activation by endogenous stimuli not inhibited by aspirin. 10 d treatment with aspirin did not result in any significant rise in intraplatelet 5HT concentration. PMID- 3856313 TI - A case of Burkitt lymphoma-L3ALL with t(8;14) translocation, developed 10 years after Hodgkin's disease. AB - We report the case of a 38-year-old man, previously treated for Hodgkin's disease (HD) with chemo-radiotherapy who, 10 years later, developed a Burkitt lymphoma (BL) as a tumour mass of the ascendent colon and regional lymph nodes and, subsequently, on leukaemic bone-marrow cells, on the basis of histological, immunological (B phenotype, IgM-lambda) and cytogenetic, translocation t(8;14) features. The patient died a few days later; at autopsy no evidence of HD was found. This is the 2nd case of BL developing after HD so far described. The relationship between the 2 diseases is discussed and the importance of the immunodepression in the pathogenesis of the secondary Burkitt lymphoma is emphasized. PMID- 3856315 TI - Family practice residency training and the community health center. PMID- 3856314 TI - Sixty year old caucasian female with nasal congestion and abnormal chest x-ray. PMID- 3856316 TI - Twenty-one year old caucasian male with right testicular mass. PMID- 3856317 TI - Congenital cystic anomalies of the biliary tract. PMID- 3856318 TI - Conduct disorders and other psychiatric disorders: results of an inpatient service. PMID- 3856319 TI - Coexpression of translocated and normal c-myc oncogenes in hybrids between Daudi and lymphoblastoid cells. AB - Mechanisms that affect the transcription of the c-myc oncogene take part in the development of B-cell neoplasias such as Burkitt's lymphoma. Daudi Burkitt lymphoma cells, which express only the translocated c-myc oncogene, were hybridized with human lymphoblastoid cells, which express the normal c-myc gene; the hybrids were phenotypically lymphoblastoid and expressed both the translocated and the normal c-myc gene. This result contrasts with the findings that the decapitated c-myc gene, translocated to an immunoglobulin switch mu or alpha region, is transcriptionally silent in lymphoblastoid hybrids. Thus, there may be at least two distinct enhancer-like elements capable of deregulating c-myc transcription in lymphomas and leukemias with t(8;14) chromosome translocations. In addition, since the Daudi X lymphoblastoid hybrids express both the translocated and the normal c-myc gene, the c-myc gene product does not autoregulate c-myc transcription. PMID- 3856320 TI - Rifkin and NIH win in court ruling. PMID- 3856321 TI - Control of cytochrome P1-450 gene expression by dioxin. AB - The environmental contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) may produce its effects by altering gene expression in susceptible cells. In mouse hepatoma cells, TCDD induces the transcription of the cytochrome P1-450 gene, whose product, aryl hydrocarbon hydroxylase, contributes both to the detoxification and to the metabolic activation of carcinogenic polycyclic aromatic hydrocarbons. A DNA fragment containing sequences flanking the 5' end of the cytochrome P1-450 gene was isolated and analyzed. This DNA fragment contains a cis-acting control element with at least three functional domains: a putative promoter, an inhibitory domain upstream from the promoter that blocks its function, and a TCDD-responsive domain still farther (1265 to 1535 base pairs) upstream of the promoter. These findings, together with results from earlier studies, imply that transcription of the cytochrome P1-450 gene is under both positive and negative control by at least two trans-acting regulatory factors. PMID- 3856322 TI - Gene transfer and expression of human phenylalanine hydroxylase. AB - Phenylketonuria (PKU) is caused by a genetic deficiency of the enzyme phenylalanine hydroxylase (PAH). A full-length complementary DNA clone of human PAH was inserted into a eukaryotic expression vector and transferred into mouse NIH3T3 cells which do not normally express PAH. The transformed mouse cells expressed PAH messenger RNA, immunoreactive protein, and enzymatic activity that are characteristic of the normal human liver products, demonstrating that a single gene contains all of the necessary genetic information to code for functional PAH. These results support the use of the human PAH probe in prenatal diagnosis and detection of carriers, to provide new opportunities for the biochemical characterization of normal and mutant enzymes, and in the investigation of alternative genetic therapies for PKU. PMID- 3856323 TI - Sequence of the alpha subunit of photoreceptor G protein: homologies between transducin, ras, and elongation factors. AB - A bovine retinal complementary DNA clone encoding the alpha subunit of transducin (T alpha) was isolated with the use of synthetic oligodeoxynucleotides as probes, and the complete nucleotide sequence of the insert was determined. THe predicted protein sequence of 354 amino acids includes the known sequences of four tryptic peptides and sequences adjacent to the residues that undergo adenosine diphosphate ribosylation by cholera toxin and pertussis toxin. On the basis of homologies to other proteins, such as the elongation factors of protein synthesis and the ras oncogene proteins, regions are identified that are predicted to be acylated and involved in guanine nucleotide binding and hydrolysis. Amino acid sequence similarity between T alpha and ras is confined to these regions of the molecules. PMID- 3856324 TI - Molecular cloning of the complementary DNA for human tumor necrosis factor. AB - Tumor necrosis factor (TNF) is a soluble protein that causes damage to tumor cells but has no effect on normal cells. Human TNF was purified to apparent homogeneity as a 17.3-kilodalton protein from HL-60 leukemia cells and showed cytotoxic and cytostatic activities against various human tumor cell lines. The amino acid sequence was determined for the amino terminal end of the purified protein, and oligodeoxyribonucleotide probes were synthesized on the basis of this sequence. Complementary DNA (cDNA) encoding human TNF was cloned from induced HL-60 messenger RNA and was confirmed by hybrid-selection assay, direct expression in COS-7 cells, and nucleotide sequence analysis. The human TNF cDNA is 1585 base pairs in length and encodes a protein of 233 amino acids. The mature protein begins at residue 77, leaving a long leader sequence of 76 amino acids. Expression of high levels of human TNF in Escherichia coli was accomplished under control of the bacteriophage lambda PL promoter and gene N ribosome binding site. PMID- 3856325 TI - Problems and pitfalls in the use of computed tomography for the local evaluation of long bone osteosarcoma: report on 30 cases. AB - Forty-eight, computed tomography (CT) examinations undertaken in 30 patients with osteosarcoma of long bones were studied in detail, their diagnostic information being compared with that obtained from corresponding plain films. The latter were of more value in assessing peripheral bony involvement, by cortical extension and periosteal reaction, while the former, in general, permitted more accurate observation of extensions into adjacent soft tissues. Recognition of such extensions, however, was vitiated when they arose in relation to the proximal ends of the tibia, fibula, and humerus and when a haematoma had developed as a result of a biopsy. Plain films were also of more value in appreciation of response to chemotherapy. On the other hand CT is the only examination which permits a satisfactory study of intramedullary extensions of the tumour and in consequence is invaluable in determining the exact sites required for local resection. No cases of skip metastases were observed in our series, although similar appearances due to nutrient vessels or bony ridges, remote from the primary tumour, were noted on several occasions. Differentiation of these densities proved to be easy, particularly in the case of nutrient vessels when examination of the contralateral bone showed them to be symmetrical. Several authors have described the role of CT in the evaluation of local extensions. This paper reports the difficulties and errors encountered by us. PMID- 3856326 TI - McArdle's disease in an elderly woman. AB - We have described a woman who was 71 years old when McArdle's disease was first diagnosed. She had few symptoms even during severe myoglobinuria. Muscle breakdown occurred upon relatively mild exertion. Others of her kindred had elevated serum creatine kinase levels and reported stiffness and muscle weakness upon relatively mild exertion. This case demonstrates the need to be alert to relatively mild manifestations of metabolic diseases. PMID- 3856327 TI - Hereditary sensory neuropathy with macular dystrophy. AB - This is the first published report of a kindred with HSN in which the propositus and one other member had bilateral macular degeneration, and a third member progressive visual loss, presumably due to similar lesions. This association may represent variable expressivity of a single gene and/or it may be a unique genetic syndrome warranting a separate classification within the HSN group. We also report that the peripheral neuropathy symptomatically benefited from prednisone. PMID- 3856328 TI - Isolation and characterization of a mutant Chinese hamster cell line resistant to the glutamine analog 6-diazo-5-oxo-L-norleucine. AB - A mutant cell line, called don801, was isolated from a wild-type population of V79.5 Chinese hamster cells by its ability to grow in the presence of the glutamine analog 6-diazo-5-oxo-L-norleucine (DON), which is toxic for V79.5 cells. The don801 cells were found not to be cross-resistant to another glutamine analog, O-diazoacetyl-L-serine (azaserine, AS). It was shown that guanine but neither hypoxanthine nor adenine protected V79.5 cells from the toxic effects of DON, while hypoxanthine and adenine, but not guanine protected them against AS toxicity. Exposure of wild-type cells to DON was shown to result in a specific reduction of intracellular GTP pools, while in the mutant cells there was no effect on GTP levels. These results strongly suggested that DON was specifically inhibiting guanylate synthetase (GMP synthetase;xanthosine-5'-phosphate: L glutamine amidoligase, EC 6.3.5.2) in V79.5 cells and that the enzyme in don801 cells was resistant to inhibition. In vitro assays of GMP synthetase activities from V79.5 and don801 cells confirmed this hypothesis. The mutant phenotype was also found to be dominant in intraspecific cell hybrids. PMID- 3856329 TI - Genetic analysis of tumorigenesis: XXI. Suppressor genes in CHEF cells. AB - In previous studies, fusions of transformed X nontransformed CHEF cells have produced hybrids that were suppressed for transformed traits and for tumor formation. During subsequent growth, the suppressed phenotypes were lost coincident with chromosome loss, and in one study the loss of anchorage dependence was correlated with loss of chromosome 1. In this paper, suppression of serum and anchorage requirements for growth is examined with the use of double mutant tester stocks. Nontumorigenic low serum mutants from CHEF/18 cells are shown to complement with the lowered serum requirement of CHEF/16, a tumorigenic line, indicating that the high serum requirement is dominant and regulated by at least two genes. Similar results were previously reported for the anchorage requirement. Suppression of the two traits is found to segregate independently in hybrid subclones with reduced chromosome numbers, showing that different genes control suppression of the serum and anchorage requirements. Evidence for two modes of suppression, by dominant alleles of transformation genes and by unrelated genes, is presented and discussed. PMID- 3856330 TI - Effect of cell cycle position on transformation by microinjection. AB - We have investigated the effect of cell cycle position on the efficiency of transformation by microinjection. Linear recombinant plasmids transform synchronized cells with similar frequencies following injections at all cell cycle stages, whereas supercoiled molecules show a decreased ability to generate transformants in early S phase. This inhibition is not due to an inability to transiently express a transferred gene, since cells at all stages of the cycle efficiently expressed a hamster adenine phosphoribosyltransferase gene introduced on a supercoiled plasmid. Southern transfer analyses of the cell cycle specific transformants revealed that tandem arrays of plasmids, integrated into the host chromosomes, could be generated at all cell cycle stages. PMID- 3856331 TI - Use of fluorescence-activated cell sorter to isolate mutant mammalian cells deficient in an internal protein, dihydrofolate reductase. AB - Dihydrofolate reductase-deficient mutants of Chinese hamster ovary cells have been selected based on their inability to bind a fluorescent derivative of methotrexate, a substrate analog. Nonfluorescent mutant cells were isolated from mutagenized populations using a fluorescence-activated cell sorter. After multiple rounds of sorting plus regrowth, the mutant cell frequency was increased from an initial 10(-5) to greater than 0.9. This use of the cell sorter to isolate mutants deficient in an internal protein should be applicable to any gene product that is able to bind a fluorescent ligand tightly. The method has the advantage of allowing the screening of large numbers of cells and of selecting for partially expressed phenotypes. PMID- 3856332 TI - Assignment of human dihydrofolate reductase gene to band q23 of chromosome 5 and of related pseudogene psi HD1 to chromosome 3. AB - The chromosomal location of the human dihydrofolate reductase (DHFR; EC 1.5.1.3) gene that is amplified in a methotrexate-resistant human cell line has been investigated by screening a number of human-Chinese hamster ovary cell hybrids containing terminal and interstitial deletions in human chromosome 5. A correlation of genomic blotting data with the chromosome 5 constitution of the individual hybrids has allowed the assignment of the human DHFR gene to 5q23. The present work also establishes the location of the related intronless pseudogene psi HD1 in chromosome 3. PMID- 3856333 TI - Assignment of three rat cellular RAS oncogenes to chromosomes 1, 4, and X. AB - Mouse hepatoma-rat hepatocyte hybrids that segregate rat chromosomes were used to determine the chromosomal localization of rat cellular RAS genes. The cellular KRAS gene, homologous to the Kirsten sarcoma virus oncogene was mapped to rat chromosome 4, a chromosome that is often present in three copies in rat neurogenic tumor cells and transformed glial cells. The rat cellular HRAS-1 gene, homologous to the Harvey sarcoma virus oncogene was assigned to chromosome 1, whereas its intron-less counterpart HRAS-2 was mapped to the X chromosome. Since the human HRAS-2 also resides on the X chromosome, it appears that the cellular HRAS-2 gene (or pseudogene) conserved its chromosomal localization during mammalian evolution. PMID- 3856334 TI - Germ-line chromosomal localization of human C-Erb-A oncogene. AB - The human germ-line position of c-erb-A, the cellular counterpart of v-erb-A, has been determined by in situ molecular hybridization of a 3H-labeled c-onc gene probe to meiotic pachytene chromosomes. Both v-erb-A and v-erb-B are the v-onc genes that are associated with induction of sarcoma and erythroblastosis in chicken by the avian erythroblastosis virus, a rapidly transforming RNA tumor virus. The position of c-erb-A, determined here to be at 17q21.33-q22, is in the same region of chromosome 17 in which a nonrandom break occurs in the generation of t(15;17), a translocation commonly seen in acute promyelocytic leukemia. PMID- 3856335 TI - [Control of gingival inflammation and teamwork with dental hygienists]. PMID- 3856336 TI - [Dentistry and dental materials in the future]. PMID- 3856337 TI - [Prosthodontics for better prognosis--1]. PMID- 3856338 TI - [Jaw model for the demonstration of mandibular movement]. PMID- 3856339 TI - [Readjustment of denture liners]. PMID- 3856340 TI - [Dialogue with a skeleton]. PMID- 3856342 TI - [Effective treatment of root canals]. PMID- 3856341 TI - [Check-up prior to working on a free-ending type prosthesis]. PMID- 3856343 TI - [Recent changes in diagnostic and treatment procedures--orthodontics]. PMID- 3856344 TI - [Application of new materials--pedodontics]. PMID- 3856345 TI - [Oral surgery based on data analysis]. PMID- 3856346 TI - [Diagnostic equipment and home care devices]. PMID- 3856347 TI - [A new imaging system--dental xeroradiography]. PMID- 3856348 TI - Fractured condyle artifact. PMID- 3856349 TI - A comprehensive oral care plan for nursing homes. PMID- 3856350 TI - Special considerations in drug therapy for elderly dental patients. PMID- 3856351 TI - Experimentation on the elderly patient with cerebral dysfunction: an ethical question. PMID- 3856353 TI - Dentistry on the move. PMID- 3856352 TI - Fiberoptics in dentistry for the homebound. PMID- 3856354 TI - Cost containment: is hospital-based dentistry affected?. Interview by Ms. Elizabeth Giangrego. PMID- 3856355 TI - Hospital dentistry for a child with Rett's syndrome. PMID- 3856356 TI - Use of dental service in a nursing home. PMID- 3856357 TI - Financial profile of a home dental care program. PMID- 3856358 TI - Geriatric dentistry in a general practice residency program. PMID- 3856359 TI - Common hospital radiographs of the head and neck region. PMID- 3856360 TI - The diagnostic wax-up: an aid in treatment planning. PMID- 3856361 TI - Cae of the month. Oral mucosal ulcers. PMID- 3856362 TI - Leukoplakia in Texas. PMID- 3856363 TI - Articular centric: the joint concept. PMID- 3856364 TI - Case of the month. Diffuse mucosal swellings. PMID- 3856365 TI - TMJ syndrome. PMID- 3856367 TI - Shots for dentists. PMID- 3856366 TI - 1985 fringe benefits: which ones are right for you? PMID- 3856368 TI - The effects of lead on differentiation of the Friend leukemia cells and rat bone marrow cells. AB - The effects of lead toxicity on differentiation of erythroid cells was examined using Friend leukemia cells induced with 2% dimethyl sulfoxide. By increasing the concentration of lead, these cells exhibited a lag before the onset of induction. When incorporation of [3H]-delta-aminolevulinic acid into heme was compared, the maximum incorporation into the cells without lead was on the third day after induction, while it was on the fifth day in the presence of lead (5 X 10(-4) M). However, these cells did reach similar differentiation stages by the seventh day. The amount of delta-aminolevulinic acid which was excreted into the medium increased in the presence of more than 10(-4) M lead. The amount of coproporphyrin III was slightly increased with 10(-6) M lead. Protoporphyrin IX content in the cells decreased slightly with increasing concentrations of lead. delta-Aminolevulinic acid dehydratase activity in cells which were cultured in the presence of lead was low, while synthesis of this enzyme increased in the presence of lead. The bone marrow cells from lead-poisoned rats exhibited a lag in onset of maturation, which was consistent with the effect of lead on Friend cells. PMID- 3856369 TI - Preparing for JCAH survey. Interview by Donna Carpenter. PMID- 3856370 TI - [Bulimia]. PMID- 3856371 TI - Long terminal repeat of Friend-MCF virus contains the sequence responsible for erythroid leukemia. AB - Friend-MCF virus induces erythroid leukemia when injected into newborn NFS mice whereas Moloney virus induces T-cell lymphoma. To identify the portion of Friend MCF virus responsible for erythroid leukemia induction four in vitro recombinant viruses were constructed in which env regions or U3 regions of LTR were reciprocally exchanged between Friend-MCF and Moloney viruses. A FrMCF-Mol (LTR) virus whose genome was derived primarily from Friend-MCF virus together with 621 nucleotides of Moloney virus at its 3' end including the U3 region of LTR was a thymic lymphoma-inducing virus. A Mol-FrMCF (LTR) virus with the genome derived primarily from Moloney virus but 596 nucleotides of Friend-MCF virus information at the same region as FrMCF-Mol (LTR) was an erythroid leukemia-inducing virus. A Mol-FrMCF (env) virus whose genome was derived primarily from Moloney virus but which had 2.3 kbp of Friend MCF at the 3' end of the pol gene including most of the env gene with all of gp70 and the N terminal of p15E was a lymphoid leukemia inducing mink cell focus-inducing virus. FrMCF-Mol (env) virus whose genome was derived primarily from Friend-MCF virus but had 2.7 kbp of Moloney virus at the same region as Mol-FrMCF (env) virus was an erythroid leukemia-inducing ecotropic virus. The Mol-FrMCF (LTR) and Mol-FrMCF (env) viruses induced mixed leukemia of erythroid and lymphoid cells in some mice. PMID- 3856372 TI - Thymectomy in the treatment of myasthenia gravis. PMID- 3856373 TI - Traumatic cholecystitis. PMID- 3856374 TI - Medical malpractice: a public crisis. PMID- 3856375 TI - Multiple primary carcinomas of the mouth: matters of life and death. PMID- 3856376 TI - Testicular organogenesis in the fetal calf: interstitial endocrine (Leydig) cell development. AB - The development of the interstitial endocrine (Leydig) cells of the fetal testis in the calf is described and correlated with a swelling reaction of the gubernaculum and normal, prenatal descent of the testis. An hydroxysteroid dehydrogenase (HSD) procedure is used to determine the onset of functional activity for the interstitial endocrine cells (IEC). The NADH control procedure was strongly positive for the IECs at all ages investigated, indicating that these cells utilize the pyridine nucleotide as a coenzyme for oxireduction conversions. The 3 alpha- and 3 beta-HSD reactions were strongly positive and lightly positive, respectively, demonstrating that these cells contain the HSDs commonly utilized in the early steroidogenesis. TEM revealed structural evidence of this differentiating steroidogenic capability within IECs. During the period of the swelling reaction there is a functional IEC population, but there is no evidence presented by this study for a causal relationship of the gubernacular swelling reaction and subsequent normal descent of the testis into the scrotum. PMID- 3856377 TI - Stability of the ankle joint. Analysis of the function and traumatology of the ankle ligaments. AB - The purpose of this study was to elucidate the function of the ligamentous structures of the ankle joint, the traumas in which they may rupture, and the types of instability caused by such ruptures. Most previous experimental investigations on the function of ankle ligaments have been performed on osteoligamentous preparations either by forcing a movement in the joint into more or less well-defined directions and observing the resulting injuries or else by cutting ligaments in various combinations and describing the resulting instability. As a rule, this has been done without inducing the increased mobility by a defined torque and without being able to demonstrate the instability continuously in all degrees of dorsi- or plantar flexion. On the basis of these previous studies, the anterior talofibular ligament appears to limit internal rotation, while its role in adduction of the talus has not been clarified. The calcaneofibular ligament per se does not seem to be a factor in adduction. True, there is not complete agreement in this respect, and a few authors have been able to rupture this ligament in isolation by forced adduction. The posterior talofibular ligament seems to restrict dorsiflexion, and perhaps it plays a role, in conjunction with the calcaneofibular ligament, in adduction when the ankle joint is in dorsiflexion. The anterior tibiofibular ligament, and the distal tibiofibular structures on the whole, are assumed to limit external rotation, but it has not been clarified whether they influence adduction and abduction in the ankle joint. Little has been reported about the individual structures which make up the deltoid ligament, as most authors have not distinguished them from each other. However, in combination with the anterior talofibular ligament, the tibiotalar ligament seems to limit the translatory forward gliding of the talus - the so-called anterior drawer sign - and together they presumably inhibit plantar flexion. It has not been possible to find any description of the function of the intermediate tibiotalar ligament, while the posterior tibiotalar ligament has been reported by one author to inhibit internal rotation. Judging by the literature, the function of the tibiocalcaneal ligament seems comprehensive, since it is reported to limit external rotation, dorsiflexion, as well as plantar flexion. The present investigations were divided into three phases: Phase 1 was concerned with elucidating the correlation of injuries to the lateral collateral ligaments to internal rotatory instability, talar tilt, and the anterior drawer sign.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3856378 TI - Effects of theophylline on small human placental arteries in vitro. AB - Effects of theophylline on contractions induced by relevant physiological agents in tubular segments of small human placental arteries were measured in an isometric myograph. Theophylline 10(-7) - 3 X 10(-3)M caused marked relaxation of steady contractions produced by prostaglandin F2 alpha (PGF2 alpha), prostaglandin E2 (PGE2), vasopressin or potassium. EC50 for theophylline relaxation of the PGF2 alpha - contraction was 1.6 X 10(-4) M. Emax was 91.5% relaxation. Theophylline was less potent in relaxing the potassium induced contraction. Pretreatment experiments with 10(-4) and 10(-3)M theophylline showed a pronounced decrease in contractile Emax-values for PGF2 alpha, PGE2 and vasopressin as a possible indication of non-competitive antagonism. The results motivate further studies to elucidate possible effects of theophylline and other xanthines on the vascular resistance and blood flow in placenta. PMID- 3856379 TI - Plasma histamine and serum pepsinogen I concentrations in chronic myelogenous leukaemia. AB - A male patient with multiple gastroduodenal ulcers and gastric hypersecretion due to hyperhistaminaemia associated with extreme basophilia occurring in chronic myelogenous leukaemia (CML) is described. In addition, plasma histamine levels and serum pepsinogen I concentrations, reflecting gastric acid secretion, were studied in 18 CML patients. As compared to controls, plasma histamine levels were clearly increased in CML patients and correlated well with the basophil count. Serum pepsinogen I concentrations were normal in 14 out of 17 cases and did not correlate with plasma histamine levels. This absence of a direct relation between plasma histamine concentrations and serum pepsinogen I levels suggests that a high concentration of circulating histamine does not inevitably lead to increased gastric acid secretion. This offers one explanation of the fact that, in spite of the frequent occurrence of basophilia and hyperhistaminaemia in CML, ulcerogenic diathesis is quite rare in this disease and complicates only cases with extreme basophilia. PMID- 3856380 TI - Pharmacological action of FPL 55712 on canine cerebral arterial segments. AB - The pharmacological action of a leukotriene antagonist FPL 55712 was studied on canine cerebral arterial segments. FPL 55712 at concentrations of 10(-6)M and 10) 5)M showed dose-dependent inhibition of the constrictor responses of the artery to prostaglandin F2 alpha. The constrictor responses of the artery to either serotonin or haemoglobin were suppressed by 10(-5)M FPL 55712, while 10(-6)M FPL 55712 failed to alter the responses. The KCL-induced constriction was not affected by treatment with either 10(-6)M or 10(-5)M FPL 55712. The present results suggest that FPL 55712 has vasodilator properties other than those related to the inhibition of leukotrienes. PMID- 3856381 TI - Primary osteosarcoma of the heart. PMID- 3856382 TI - Acyclovir treatment of disseminated varicella in childhood malignant neoplasms. AB - Primary varicella-zoster virus infection (chickenpox) in immunocompromised children is frequently associated with visceral dissemination and attendant high mortality. Eight children with malignant neoplasms and chickenpox with visceral involvement (seven with hepatitis, three with pneumonitis, two with encephalitis, and two with coagulopathy) were initially treated with intravenously (IV) administered vidarabine but demonstrated progressive visceral involvement. After three days of vidarabine treatment (two days for two patients), seven had rising serum SGPT levels, all eight had pneumonitis, seven had deteriorating mental status and/or seizure activity, and six had worsening coagulopathy. Vidarabine was replaced by IV administered acyclovir, with subsequent improvement in all but the most severely ill patient who died. Seven of eight patients recovered completely; no side effects of acyclovir were observed. This clinical experience suggests that acyclovir may be more effective than vidarabine in disseminated varicella infection; however, controlled clinical trials will be necessary to establish this. PMID- 3856383 TI - Detection of genetic heterogeneity between families of insulin-dependent diabetes mellitus patients using linkage analysis. AB - Much debate has taken place over the mode(s) of inheritance of insulin-dependent diabetes mellitus (IDDM) and the possibility of etiological heterogeneity. We have analyzed the disease status (IDDM) and genetic marker (HLA-A/B haplotype) data from 61 multiple-case IDDM families ascertained through two registries in the Pittsburgh, Pennsylvania, area. Linkage analysis results were similar for five previously published simple models of transmission. No heterogeneity could be detected on the basis of the total sample or when the sample was categorized according to the proband's HLA-B or HLA-DR type. In contrast, categorizing the families by generation(s) of the affected individuals revealed differences in the linkage analysis results. Families with affected siblings only (N = 38) showed strong evidence for close linkage for all models. Families with a parent and siblings affected (N = 6) showed evidence against close linkage between HLA-B and IDDM for some models. PMID- 3856384 TI - Schistocytes in erythroleukemia. AB - A patient whose initial hematologic evaluation suggested the diagnosis of a microangiopathic hemolytic anemia (MAHA) was further evaluated and found to have erythroleukemia (DiGuglielmo's syndrome). This prompted us to review retrospectively the peripheral blood morphology of 12 patients with erythroleukemia. Anisocytosis, poikilocytosis, macrocytosis, and nucleated red cells have been described in patients with erythroleukemia; however, changes characteristic of a microangiopathic hemolytic process (schistocytes) have not been previously described. Our patients with erythroleukemia had prominent helmet and fragmented red cells, as well as elliptocytosis. Six of our 12 patients with erythroleukemia did not have blasts on their peripheral smear, and platelets were decreased (platelet count ranged from 2 to 92 X 10(3)/microliter), resulting in changes similar to patients with MAHA due to thrombotic thrombocytopenic purpura (TTP), traumatic RBC lysis, and disseminated intravascular coagulation. Our data indicate the RBC changes characteristic of MAHA are commonly seen in erythroleukemia, and that as many as half of these patients may not have white cell changes suggestive of leukemia on the peripheral smear. Patients presenting with microangiopathic hemolytic anemia require a bone marrow examination to confirm or exclude a myelodysplastic syndrome. PMID- 3856385 TI - X-linked motor-sensory neuropathy type-II with deafness and mental retardation: a new disorder. AB - We report on a family with an apparently X-linked neuromuscular disease. Electrophysiologic tests and electron microscopic studies are consistent with the diagnosis of hereditary motor sensory neuropathy type II (HMSN-II), one form of Charcot-Marie-Tooth disease. The manner of inheritance, the observation that males are severely affected from infancy, and the frequent association of deafness and/or mental retardation with the neuromuscular disorder are not usual for HMSN-II and suggest that this family may have a previously undescribed genetic disorder. The peripheral neuropathy did not appear to be linked to the Xg blood group. Minor abnormalities of sensory nerve conduction, electromyography, and hearing were separately identified in female relatives in this family, but were not consistent enough to be useful in the identification of carriers for this gene. PMID- 3856386 TI - Changes in the synthesis and metabolism of prostaglandins by human fetal membranes and decidua at labor. AB - The production of prostaglandins by dispersed cells from human amnion, chorion, and decidua was examined at term before the onset of labor and at spontaneous vaginal delivery. In order to obtain detailed information about relative prostaglandin production rates, the time course of prostaglandin output was examined by incubating the cells for up to 4 hours and measuring the cumulative output of prostaglandin E2, prostaglandin F2 alpha and 13,14-dihydro-15-keto prostaglandin F2 alpha in the incubation media. The output of all three prostaglandins was low in tissues obtained before the onset of labor. At labor there was an increased production of prostaglandins E2 and F2 alpha in amnion and a small increase in the output of prostaglandin E2, prostaglandin F2 alpha, and 13,14-dihydro-15-keto-prostaglandin F2 alpha in decidua. In contrast, chorionic cells obtained at spontaneous vaginal delivery showed high levels of 13,14 dihydro-15-keto-prostaglandin F2 alpha in the media with no net production of prostaglandin E2 or F2 alpha. These data suggest a high rate of specific in vitro prostaglandin synthesis in amnion and decidua at labor, accompanied by a high rate of prostaglandin metabolism in chorion. PMID- 3856387 TI - A comparison of Lamicel and prostaglandin E2 vaginal gel for cervical ripening before induction of labor. AB - The efficiency and safety of Lamicel, a new synthetic cervical ripening agent, were compared with those of intravaginal prostaglandin E2 gel in a group of 80 primigravid women about to undergo induction of labor. Lamicel caused less uterine activity and fetal distress than prostaglandin gel, although the induction-delivery intervals were similar in both groups. More normal deliveries occurred in the Lamicel group than in the prostaglandin group. It is suggested that Lamicel is a useful, efficient preinduction ripening agent that is safer than intravaginal prostaglandin gel. PMID- 3856388 TI - Steroid metabolism by human chorion laeve from dichorionic twin pregnancies. AB - Certain steroid metabolic properties of chorion laeve from dichorionic twin pregnancies were examined to determine whether they were present in chorion not contaminated by decidua or serum. In the chorion situated between the two amniotic sacs and not in contact with decidua, aryl sulfatase, 3 beta hydroxysteroid dehydrogenase, and aromatase activities were found. This indicates that these reactions are present in chorion laeve and were not previously ascribed to this tissue because of decidual contamination. Specific cortisol binding was also present in this area of chorion laeve, which excludes serum contamination. It is suggested that the specific steroid-binding protein in the membranes may be derived from the transcortin-like protein present in amniotic fluid. PMID- 3856389 TI - High long-standing fertilizing capacity of human sperm isolated for male sex preselection. AB - A method of separating a Y-enriched human sperm population for male sex preselection with a single-column, four-step, four-layer albumin gradient technique is presented. This technique provides an efficient separation of spermatozoa, good Y-enriched sperm motility, and high fertilization capacity of this fraction as tested by the zona-free hamster ova sperm penetration assay. PMID- 3856390 TI - Long-term effects of extended wear lenses: changes in refraction, corneal curvature, and visual acuity. AB - Extended wear lenses (Scanlens 75) +4.25 to -10.00 D were worn monocularly by 19 patients for an average of 5.4 years. The other eye of each patient was either emmetropic or amblyopic and no lens was worn. Both eyes were tested after lens removal and again 2 days and 7 days later. No significant differences in refraction, keratometry, or visual acuity were found between the experimental and control eyes. The amount of changes in both groups was not clinically significant: refractive changes averaged less than 0.37 D, keratometric changes averaged an equivalent 0.25 D, astigmatism increases were less than 0.25 D, and visual acuity was fully correctible to previous best visual acuity with spectacles in all cases. PMID- 3856391 TI - Anterior open-bite malocclusion: a longitudinal 10-year postretention evaluation of orthodontically treated patients. AB - Long-term response of the anterior open-bite malocclusion was evaluated in forty one white subjects who had undergone orthodontic treatment and were out of retention a minimum of 9 years 6 months. The purpose of the study was threefold: (1) to make cephalometric comparisons between a sample of open-bite patients and a sample with normal cephalometric standards, (2) to evaluate treatment and posttreatment changes that occurred in treated open-bite patients, and (3) to search for predictors and associations of value. Changes occurring across time in the open-bite patients were analyzed by computer means using pretreatment, posttreatment, and long-term cephalometric radiographs and dental casts. An analysis of subgroups was reviewed to compare dentoalveolar and skeletal relationships of both stable and relapse groups. More than 35% of the treated open-bite patients demonstrated a postretention open bite of 3 mm or more, with the relapse subgroup demonstrating across-time, less mandibular anterior dental height, less upper anterior facial height, greater lower anterior facial height, and less posterior facial height. Neither the magnitude of pretreatment open bite, mandibular plane angle, nor any other single parameter of dentofacial form proved to be a reliable predictor of posttreatment stability. PMID- 3856392 TI - Facial growth following pharyngeal flap surgery: skeletal assessment on serial lateral cephalometric radiographs. AB - The purpose of this study was to evaluate the effect of pharyngeal flap surgery on subsequent facial growth in patients with cleft lip and/or palate. Pharyngeal flap surgery is used in such patients to partially obliterate the velopharyngeal port, reducing hypernasal speech. Thirty-four patients (18 with cleft palate only, 16 with unilateral cleft lip and palate) were selected from the longitudinal growth study of the H.K. Cooper Clinic. Seventeen of these (9 with cleft palate only, 8 with unilateral cleft lip and palate) underwent pharyngeal flap surgery between the ages of 5 and 7 years. The other seventeen patients did not undergo pharyngeal flap surgery and served as a control group for this study. Serial lateral cephalometric radiographs were traced and digitized (ages 3 to 5, preflap; ages 7-10, postflap). Fourteen skeletodental measurements (six angular, six linear, two derived) were taken to determine whether pharyngeal flap surgery may be related to subsequent facial growth changes. The data from the 17 flap patients were compared with control data taken from the other seventeen patients. The groups were matched for sex, cleft type, and similarity of presurgical mandibular growth direction (facial axis angle). Results obtained demonstrate several significant areas of change following flap surgery, including a decrease in facial axis angle, an increase in Frankfort-mandibular plane angle, an increase in incremental gains in lower anterior face height, and increased retroclination of upper and lower incisors in the flap group as compared to their matched controls. PMID- 3856393 TI - A Pascal computer program for digitizing lateral cephalometric radiographs. AB - The authors describe a new program for cephalometric analysis which uses a commonly available microprocessor (computer) and digitizing pad to register fifteen commonly identified cephalometric landmarks to produce a meaningful analysis which is printed out for permanent or hard-copy record. Conventional and digitizing errors of cephalometric measurement are reviewed, with a discussion of the advantages of computer-assisted programs. The authors describe a program that uses vectors and vector algebra and the capabilities of the Pascal computer language to determine angular measurements and distances. It is suggested that computer-assisted cephalometric programs will likely be widely used in the near future, providing the orthodontist with a superior method of cephalometric analysis with respect to accuracy and speed of completion. PMID- 3856394 TI - Magnetic force systems in orthodontics. Clinical results of a pilot study. AB - In this report, the initial results of magnetic force systems as applied to clinical orthodontics are presented. More particularly, the article describes the use of operator-controlled, small, permanent magnets for intermaxillary and intramaxillary mechanics. In addition to generating a force of sufficient intensity and duration, which is controlled by the operator, other advantages also became apparent. Good three-plane vector control independent of patient cooperation were observed in two patients. Both patients reported no discomfort during treatment. Extensive additional clinical testing is currently being conducted. PMID- 3856395 TI - The effect of pulsating electromagnetic fields on condylar growth in guinea pigs. AB - The purpose of this study was to determine if a simple, noninvasive method could be developed for the application of pulsed electromagnetic fields that would lend itself to future clinical applications. Specifically, the modulation and control of condylar cellular metabolism and the stimulation of cellular proliferation were attempted in order to increase the amount of mandibular condylar growth. A pulsed electromagnetic field with a frequency of 100 hertz was applied for 8 hours per day to the mandibular condylar area of rapidly growing, male, Hartley guinea pigs. Ten guinea pigs were exposed for 10 days and a second group of 10 guinea pigs was exposed for 30 days. In addition, 5 guinea pigs were used as controls for each experimental period. During the experimental period the guinea pigs were placed in specially constructed, plastic animal holders with their heads positioned in an area of uniform magnetic field. After 10 days of pulsed electromagnetic field exposure, there were increases in vascularity, secretion of cartilagenous intercellular matrix, and woven-bone formation in the guinea pig condyle. After 30 days, there were continued but attenuated vascular and calcification responses with an increase noted in marrow hemopoietic elements. An increase in the number of osteoclasts was also noted after 10 days. This effect was transient and was not present at the end of the 30-day experimental period. The application of the pulsed electromagnetic field did not result in a significant increase in the overall anteroposterior or vertical size of the guinea pig mandible compared to controls. The results of this study suggest that it is possible to affect condylar cartilagenous and bony metabolism through the application of a noninvasive, pulsed electromagnetic field. PMID- 3856396 TI - An electromyographic analysis of the temporalis function of normal occlusion. AB - Electromyographic (EMG) activity was recorded from the anterior, middle, and posterior regions of the temporalis muscle in ten subjects with normal occlusion of the teeth and with the mandible at rest and during exertion of increased biting force, using bipolar intramuscular electrodes. Results show that the posterior part of the temporalis muscle maintains the mandibular posture. Although there is no statistically significant difference in EMG recordings between the three divisions of the temporalis muscle during intercuspal biting, individual variations in EMG pattern exist. During exertion of increased biting force the EMG activity increases proportionally in all parts of the muscle. During retruded biting force the posterior temporalis predominates. The EMG activity of the temporalis muscle is correlated to the form and position of the mandible. PMID- 3856397 TI - Progressive facial asymmetry as a result of early closure of the left coronal suture. AB - A longitudinal growth analysis of a patient with premature closure of the left coronal suture is presented. The resultant facial asymmetry of patients with unilateral synostosis of the coronal suture is accompanied by diagnostic facial characteristics and radiographic skull distortions. The midfacial structures distort and grow toward the site of synostosis while the lower face grows away from the site of synostosis. Unilateral craniosynostosis of the coronal suture results in distortions and compensations within the cranial vault and the cranial base. Therefore, with growth of the contiguous facial structures, the facial distortions are magnified. PMID- 3856398 TI - On the application of engineering mechanics to the force and structural analyses of orthodontic appliances. PMID- 3856399 TI - Antidiuretic and PGE2 responses to AVP and dDAVP in subjects with central and nephrogenic diabetes insipidus. AB - Vasopressin stimulates renal prostaglandin (PGE2) production at several loci and in turn PGE2 modulates the antidiuresis. We have found the time courses of increased urinary PGE2 in subjects with central diabetes insipidus (DI) parallel the antidiuretic responses to AVP and dDAVP. The antidiuretic response to 4 micrograms dDAVP in these subjects was far greater than the response to 5 U (12.5 micrograms) AVP, but the PGE2 response to the dDAVP was only marginally greater than that which followed the AVP. Therefore, dDAVP disproportionately stimulates antidiuresis in relation to PGE2 production, whereas the reverse holds for AVP. In subjects with nephrogenic DI 12.5 micrograms AVP caused no antidiuresis but stimulated PGE2 excretion as well as in subjects with central DI. There was an intermediate relationship between antidiuresis and PGE2 excretion in subjects with central DI given AVP and subjects with nephrogenic DI injected with dDAVP. In summary, 1) the normal PGE2 response to AVP in subjects with nephrogenic DI is consistent with other evidence that non-antidiuretic actions of vasopressin are not impaired in these subjects. 2) The limited capability of dDAVP to stimulate PGE2 may be a factor in the augmented antidiuretic response to dDAVP in subjects with central DI. 3) Antidiuretic and PGE2 responses to vasopressin can be dissociated, thus allowing further consideration of mechanisms by which each may be independently controlled and interrelated. PMID- 3856400 TI - Fibromyalgia and major affective disorder: a controlled phenomenology and family history study. AB - Fibromyalgia is a form of nonarticular rheumatism characterized by diffuse musculoskeletal pain. To investigate the relationship between fibromyalgia and major affective disorder, the authors evaluated 31 patients with fibromyalgia and 14 patients with rheumatoid arthritis for rates of current or past major affective disorder and family history of major affective disorder. Both the rate of major affective disorder and the familial prevalence of major affective disorder were significantly higher in the fibromyalgia patients than the rheumatoid arthritis patients. The results suggest that fibromyalgia may be related to major affective disorder. PMID- 3856401 TI - Characteristics of 275 patients with bulimia. AB - The authors present data on 275 patients who met DSM-III criteria for bulimia. The mean age of the patients was 24.8 years, and the average duration of illness was approximately 7 years. These patients reported a variety of abnormal eating related behaviors: binge eating (100%), self-induced vomiting (88.1%), laxative abuse (60.6%), diuretic abuse (33.1%), and chewing and spitting out food (64.5%). Over one-third reported a history of problems with alcohol or other drugs and most indicated substantial social impairment. PMID- 3856402 TI - Neutropenic enterocolitis in adults. Review of the literature and assessment of surgical intervention. AB - We have reported two cases of neutropenic enterocolitis (one of them being the first reported case occurring in a patient with multiple myeloma), which is a necrotizing lesion in the gastrointestinal tract that is seen in patients usually on aggressive chemotherapeutic regimens and associated with leukemias, lymphomas, malignant neoplasms, and other disorders in which neutropenia is present. Although once considered to have a dismal prognosis, favorable outcomes have occurred when this clinical entity is recognized early and surgical intervention is undertaken to resect the necrotic portion of the gastrointestinal tract. A review of the literature is included that encompasses adult patients with this syndrome. PMID- 3856403 TI - Ventilation safety guard. PMID- 3856404 TI - Pubertal spurts in cranial base and mandible. Comparisons within individuals. AB - Serial data from cephalometric radiographs were analyzed for 34 boys and 33 girls who had cephalometric radiographs annually near each birthday from at least age 7 through 18 years. Spurts were defined for this study as increases between successive cranial base increments that exceeded 0.75mm/year in boys or 0.5mm/year in girls. The corresponding criterion for the mandible was 1.0mm/year in either sex. Pubescence was defined as the 4- year period spanning 2 years before and after peak height velocity. Spurts during pubescence were common, tending to occur about 1.6yr earlier in girls than boys. The mean increments at first pubertal spurt (FPS) and the mean sizes of FPS were about 25% to 33% greater in the boys than in the girls. The rate of growth during the year before FPS tended to be greater in the girls, while in the year after FPS it tended to be greater in the boys. The timing of FPS in either cranial base of mandible was not closely related to the onset of ossification in the ulnar sesamoid, the age at peak height velocity, or age at menarche. FPS generally occurred after the onset of ossification of the ulnar sesamoid, but before peak height velocity and menarche. There was no evidence of difference between craniofacial EPS in children who passed rapidly or slowly through pubescence, nor was any difference noted between the size of pubertal spurts in tall or short boys. larger total increments after peak height velocity were found in the short boys. Significant correlations were identified between the cranial base and the mandible in the timing but not in the magnitude of FPS. The children were approximately equally divided between those in whom cranial base spurts occurred first, those in whom mandibular spurts were first, and those in whom FPS occurred in both areas within the same annual interval. PMID- 3856405 TI - The nasopharynx, face height, and overbite. AB - In lateral cephalometric films of a group of male subjects, none of whom was a mouth breather, the statistical relationships between overbite and nasopharyngeal dimensions were weak. Moderate relationships were found between face height and nasopharyngeal dimensions. Strongest correlations, with a peak at 10 years, were between--Face height and nasopharyngeal height (+) Face height and nasopharyngeal area (+) Face height and roof angle (-) Dynamic correlations between overbite, face height and nasopharyngeal dimensions were weak. Class II malocclusion subjects on average showed--Smaller Nasopharyngeal and Adenoid Areas. Larger Airways in both real and proportional terms, compared with Class I and normal occlusion subjects. PMID- 3856406 TI - Stiffness of incisor segments of edgewise arches in torsion and bending. AB - A mechanical model dentition is used in a laboratory study to relate incisor segment third-order activation to actual torque induced upon engagement of maxillary Edgewise arches. A portion of the sample of stainless-steel aches was subjected to stress-relief heat treatment. Torsional stiffness values are calculated, and the accompanying vertical displacement force on the incisor segment is evaluated. The results seem to warrant the following conclusions. Broad ranges of incisor segment torque magnitudes may be obtained from rectangular orthodontic wires and arch designs presently in common clinical use. Torsional behavior is associated with the elastic shear modulus or modulus of rigidity, which is essentially the same for all stainless and chrome-cobalt alloys. Vertical extrusive force is generated as a secondary effect directly related to the torsional stiffness and torque activation. Compensation is possible through archwire adjustments to cause the wire to lie above the bracket slots of the incisor segment before activation of lingual root torque. Stress relief of rectangular stainless steel arches following placement of V-bends, twists, or loops did not have a significant effect on force values. Further investigation, modeling other configurations such as labiolingual movements of the six maxillary anterior teeth to determine the torsional stiffnesses for commonly-used arches could be worthwhile. Similarly, the quantification of torsional stiffnesses of arches fabricated in rectangular nickel-titanium, titanium-molybdenum, and braided stainless-steel wires may be of value. PMID- 3856407 TI - A new drum. PMID- 3856408 TI - Lower molar crowding in the early permanent dentition. PMID- 3856409 TI - Extraction of four second molars. AB - The cases presented here clearly demonstrate that the removal of second permanent molars can be effective in many cases where removal of first or second bicuspids would otherwise be recommended. Third molars can be useful components of the dentition. The Author has found that when the proper diagnosis is made and the extraction of second molars is recommended, third molars will assume their position in juxtaposition to the first permanent molar in over 75% of the cases. Although we used several methods of measuring developing mandibular third molars, we were unable to predict accurately and consistently which teeth would erupt in the proper upright position (Fig. 10). With rare exception, maxillary third molars will erupt uneventfully, but in the mandibular arch there is a much greater possibility that it may be necessary to upright or reposition the third molars. PMID- 3856410 TI - Third molar changes following second molar extractions. AB - Third molars, both upper and lower, do usually erupt into the place of electively removed second molars. None of the third molars in this study group became impacted during the observation period. Second molars in this study were removed before the roots had formed on the third molars. The bifurcation line appears to be a stable reference on the panoramic radiograph. It is the Author's conclusion that the extraction of permanent second molars is best for many patients, and when judiciously applied it is a reasonably safe and conservative modality in orthodontic care. PMID- 3856411 TI - Second molar germectomy and third molar eruption. 11 cases of lower second molar enucleation. AB - Eleven cases followed from enucleation of the unerupted lower second molars through third molar eruption. While results were generally good, three presented third molar malpositions requiring further treatment. PMID- 3856412 TI - Therapeutic effect of a new antibacterial substance ofloxacin (DL8280) on pulmonary tuberculosis. AB - A new antibacterial substance, ofloxacin (DL8280), was used in the treatment of pulmonary tuberculosis. The agent was given to 19 patients with chronic cavitary lung tuberculosis as single doses of 300 mg daily for 6 to 8 months. A decrease in the amount of tubercle bacilli in the sputum was observed in almost all patients, and negative conversion occurred in 5. Resistance of tubercle bacilli to the agent appeared in patients who did not show negative conversion. No side effects were observed during the administration period. The agent was considered useful in lung tuberculosis therapy. PMID- 3856413 TI - [Major demineralization syndrome in acute lymphoblastic leukemia]. PMID- 3856414 TI - Cat's eye syndrome with cleft soft palate. AB - Cat's eye syndrome is a very rare disease with many congenital anomalies. Until the end of 1983, 35 cases had been reported, but only 5 cases were associated with cleft palate, and only 1 patient was operated on. A 4-year-old male child had coloboma of the iridochoroid, cleft soft palate, hypertelorism with an antimongoloid slant of the eyes, epicanthal folds, hearing deficit, congenital heart disease (pulmonary arteriovenous fistula), mental and growth retardation, and a 47,XY + marker chromosome. The patient did not have anal atresia, preauricular skin tags, microphthalmia, depressed nasal bridge, or renal or skeletal anomalies. The operation was performed on his cleft soft palate when he was 2.5 years old. PMID- 3856415 TI - Myophosphorylase deficiency impairs muscle oxidative metabolism. AB - We studied oxidative metabolism during bicycle exercise in 4 patients with myophosphorylase deficiency. Maximal oxygen uptake (VO2max) was low (14.0 +/- 1.4 ml X kg-1 X min-1, mean +/- SE) compared with that in normal subjects (37.7 +/- 1.9; n = 12) and patients with myalgia (24.9 +/- 1.8; n = 10). Carbohydrate oxidation, as estimated by the respiratory exchange ratio (R), was low relative to workload (max R, mean +/- SE: McArdle's disease, 0.96 +/- 0.02; normal subjects, 1.13 +/- 0.02; myalgia, 1.09 +/- 0.02). Intravenous glucose administration increased maximal oxygen uptake about 20% in those with McArdle's disease, but both VO2max and R remained lower than in control subjects. These findings suggest that the capacity for dynamic exercise in McArdle's disease is limited by the availability of oxidative substrate, and indicate that blood glucose is unable to substitute fully for muscle glycogen as an oxidative fuel. We also found that exercise cardiac output (Q) was excessive relative to oxygen uptake in affected patients (delta Q/delta VO2, mean +/- SE: McArdle's disease, 11.6 +/- 1.7; normal subjects, 4.8 +/- 0.2; myalgia, 5.6 +/- 0.2). This hyperkinetic circulation in exercise may serve to increase the delivery of blood borne oxidative substrate to working muscle. PMID- 3856416 TI - The effect of iron overload on urinary excretion of immunoreactive prostaglandin E2. AB - The effect of in vivo lipid peroxidation on the excretion of immunoreactive prostaglandin E2 (PGE2) in the urine of rats was studied. Weanling, male Sprague Dawley rats were fed a vitamin E-deficient diet containing 10% tocopherol stripped corn oil (CO) or 5% cod liver oil (CLO) with or without 40 mg dl-alpha tocopheryl acetate/kg. To induce a high, sustained level of lipid peroxidation, some rats were injected intraperitoneally with 100 mg of iron as iron dextran after 10 days of feeding. Iron overload stimulated in vivo lipid peroxidation in rats, as measured by the increase in expired ethane and pentane. Dietary vitamin E reversed this effect. Rats fed the CLO diet excreted 9.5-fold more urinary thiobarbituric acid-reactive substances (TBARS) than did rats fed the CO diet. Iron overload increased the excretion of TBARS in the urine of rats fed the CO diet, but not in urine of rats fed the CLO diet. Dietary vitamin E decreased TBARS in the urine of rats fed either the CO or the CLO diet. Iron overload decreased by 40% the urinary excretion of PGE2 by rats fed the CO diet, and dietary vitamin E did not reverse this effect. Iron overload had no statistically significant effect on urinary excretion of PGE2 by rats fed the CLO diet. A high level of lipid peroxidation occurred in iron-treated rats, as evidenced by an increase in alkane production and in TBARS in urine in this study, and by an increase in alkane production by slices of kidney from iron-treated rats in a previous study [V. C. Gavino, C. J. Dillard, and A. L. Tappel (1984) Arch. Biochem. Biophys. 233, 741-747]. Since PGE2 excretion in urine was not correlated with these effects, lipid peroxidation appears not to be a major factor in renal PGE2 flux. PMID- 3856417 TI - Regioselectivity of hydroxylation of prostaglandins by liver microsomes supported by NADPH versus H2O2 in methylcholanthrene-treated and control rats: formation of novel prostaglandin metabolites. AB - The effects of methylcholanthrene (MC) treatment of male rats on the regioselectivity of hydroxylation of prostaglandins E1 and E2 (PGE1 and PGE2) by liver microsomes, supplemented with NADPH or H2O2, was examined. In the presence of NADPH, control microsomes catalyzed the hydroxylation at omega-1 (C19) and at omega-(C20) sites with minimal formation of novel monohydroxy metabolites of PGE1 and PGE2, referred to as compounds X1 and X2, respectively. Similarly, H2O2 supported the 19-hydroxylation and the formation of compounds X1 and X2, but yielded only minimal amounts of 20-hydroxy products. With NADPH, MC-treated microsomal incubations demonstrated only minor quantitative change in the 19- and 20-hydroxylation as compared with controls, but showed a 7- to 11-fold increase in formation of compound X1 and a 10-fold increase in formation of X2. By contrast with H2O2, MC-treatment increased by about 3-fold the 19- and 20 hydroxylation of PGE1 and by 35- to 46-fold the formation of X1; similarly, there was an approximate 2-fold increase in 19- and 20-hydroxylation of PGE2 and a 10 fold increase in formation of X2. These findings suggest that several monooxygenases are involved in catalyzing the hydroxylation at the various sites of the PGE molecule. Inhibitors of monooxygenases (SKF 525A, alpha naphthoflavone, and imidazole derivatives) provided further evidence that the hydroxylation at the three sites of PGEs is catalyzed by different P-450 monooxygenases. It is striking that the inhibitors had a much lesser effect on the 20-hydroxylation of PGE1 as compared with other sites of hydroxylation. Structural identification of compounds X1 and X2 was elucidated as follows. Resistance of the PGB derivative of X1 to periodate oxidation and mass fragmentation analysis of the t-butyldimethylsilyl ether methyl ester, placed the hydroxylation at C17 or C18. Finally, mass fragmentation of trimethylsilyl ether methyl ester PGB derivatives of X1 and X2 provided conclusive evidence that X1 and X2 are 18-hydroxy-PGE1 and 18-hydroxy-PGE2, respectively. The above findings indicate that the high regioselectivity of hydroxylation of PGE1 and PGE2, resulting in the formation of 18-hydroxy-PGE1 and 18-hydroxy-PGE2, respectively, is catalyzed by P-450 isozyme(s) which are induced by MC, possibly by P-450c. PMID- 3856418 TI - Isotretinoin therapy for progressive systemic sclerosis. PMID- 3856419 TI - Iatrogenic breast discharge with isotretinoin. PMID- 3856420 TI - Septic arthritis due to Histoplasma capsulatum in a leukaemic patient. AB - A case of septic, histoplasmal monoarthritis of the knee in a leukaemic patient is described. Ketoconazole therapy failed to eliminate the infection, but after histoplasmosis was diagnosed prolonged therapy with amphotericin B was curative. PMID- 3856421 TI - Preleukemia and urticaria pigmentosa followed by acute myelomonoblastic leukemia. AB - A preleukemic syndrome, mast cell hyperplasia in the bone marrow, and urticaria pigmentosa simultaneously developed in a 76-year-old woman. A year later, the patient died of acute myelomonoblastic leukemia. These associations provide evidence favoring the origin of the tissue mast cell from a bone marrow stem cell. PMID- 3856422 TI - [Quantitative analysis of the ultrastructure of gastric mucocytes in the rat after prostaglandin treatment]. AB - Effect of prostaglandin E2 (PGE2) on mucus secretion by mucocytes of the fundal part of the rat stomach has been studied electron microscopically, morphometrically and biochemically. PGE2 is found to stimulate synthesis of glycoproteins and their secretion by the mucocytes that results in increasing the relative volume of Golgi complex and in decreasing that of secretory granules. Actinomycin does not affect and cycloheximide blocks the stimulating activity of prostaglandin. This demonstrates that prostaglandin produces its action at the posttranscriptional (translational) level controlling mucus secretion of mucocytes. Owing to the results of the investigation and of those previously obtained on incorporation of 3H-pentagastrin and 3H-histamine into the cells of the mucous tunic, at least two mechanisms are supposed to control the gastric mucus secretion. PMID- 3856423 TI - Cardiac complications of intensive dieting and eating disorders. PMID- 3856424 TI - Extended-wear soft contact lenses. PMID- 3856425 TI - Peritonsillar abscess. PMID- 3856426 TI - Identification of three antigens in human brain associated with similar antigens on human leukaemic cells. AB - Monoclonal antibodies prepared against a non-T and non-B acute-lymphocytic leukaemia cell line were tested for reactivity against human brain tissue. Several of the monoclonal antibodies were found to react specifically with brain fractions. Three antigens, 44H4, 44D7 and 44D10, were identified in white matter. Although 44D10 was absent from grey matter, the levels of 44H4 and 44D7 antigens present in grey matter were 2- and 4-fold higher respectively than in white matter. Fractionation of white matter indicated that all three antigens were absent from the multilamellar compact myelin, but associated with a membrane fraction of higher density. All three antigens, which required detergent for solubilization from the membranes, were purified by affinity to monoclonal antibodies and/or were analysed by immunoblotting. The 44H4 and 44D10 antigens were single polypeptide chains with Mr 94000 and 80000 respectively when resolved by sodium dodecyl sulphate/polyacrylamide-gel electrophoresis. Monoclonal antibody 44D7 reacted with a complex of a Mr greater than 120000 under non reducing conditions in the presence of sodium dodecyl sulphate. This complex dissociated on reduction into four bands with Mr values of 80000, 57000, 47000 and 41000. The brain antigens are present on proteins similar to, or identical with, those isolated from acute-lymphocytic-leukaemia cells. PMID- 3856427 TI - Stimulation of creatine kinase BB activity by parathyroid hormone and by prostaglandin E2 in cultured bone cells. AB - Bone cells in culture responded to parathyroid hormone (PTH) and prostaglandin E2 (PGE2) by a 2-fold increase in creatine kinase (CK) activity. Combined treatment resulted in a higher response than with PTH alone. Calcitonin (CT) failed to stimulate CK activity, did not affect the response of CK to PTH, but inhibited slightly the increase in CK activity by PGE2. Bone-cell cultures grown in low [Ca2+] (0.125 mM), enriched in PTH-responsive osteoblast-like cells, responded to PTH, but not to PGE2 or CT, by increased CK activity. In both normal and low [Ca2+] cultures, 8-bromo cyclic AMP did not affect CK activity, nor did it change the response of the cells to PTH, PGE2 or CT. The increase in CK activity was time- and dose-dependent and inhibited both by cycloheximide and by actinomycin D. The isoenzyme of CK stimulated was the CKBB form, the isoenzyme induced by other hormones. This appears to be the first report of the stimulation of CK activity by a polypeptide hormone or a prostaglandin. We suggest that stimulation of CKBB can serve as a marker for the action of a variety of hormones and growth promoters. PMID- 3856428 TI - Increased dihydrofolate reductase activity in methotrexate-resistant human promyelocytic-leukaemia (HL-60) cells. Lack of correlation between increased activity and overproduction. AB - Methotrexate(MTX)-resistant human promyelocytic-leukaemia cells (HL-60) derived from MTX-sensitive cells have a 20-fold increase in dihydrofolate reductase (DHFR) activity as compared with the sensitive cells. This increase is not associated with a concomitant increase in DHFR protein as determined by sodium dodecyl sulphate/polyacrylamide-gel electrophoresis and by immunological methods using mouse anti-DHFR antibody. The rate of DHFR synthesis is similar in both cell lines. Furthermore, both the sensitive and resistant cells have similar amounts of RNA hybridizing to a DHFR complementary-DNA probe, correlating well with the lack of increase in DHFR protein. DHFR-gene dosages were similar in both types of cells. We conclude that the 20-fold increase in DHFR activity present in these MTX-resistant cells is not due to the overproduction of DHFR but due to the expression of a more active form of the enzyme. PMID- 3856429 TI - Human c-myc and N-ras expression during induction of HL-60 cellular differentiation. AB - The genome of the human HL-60 promyelocytic leukemia cell contains amplified c myc sequences and the transforming N-ras oncogene. The present study has monitored c-myc and N-ras expression in HL-60 cells during induction of myeloid and monocytic differentiation with dimethyl sulfoxide, hexamethylene bisacetamide, 12-O-tetradecanoylphorbol-13-acetate and 1,25 dihydroxy-vitamin D3. The results demonstrate that induction of HL-60 differentiation is associated with decreases in c-myc RNA, while there is little if any effect on expression of the N-ras gene. Although the diminution in c-myc expression occurred as an early event in the induction of HL-60 differentiation, the rate of decrease in c-myc transcripts varied with respect to cessation of proliferation. Thus, the appearance of the mature phenotype and loss of proliferative capacity are associated with declines in c-myc RNA, while these events appear to occur in the absence of significant alterations in N-ras expression. PMID- 3856430 TI - Cellular transport of anthracyclines by passive diffusion. Implications for drug resistance. PMID- 3856431 TI - Dissociation kinetics of DNA-anthracycline and DNA-anthraquinone complexes determined by stopped-flow spectrophotometry. AB - The first order rate constants for the dissociation of daunorubicin, doxorubicin, and 1-; 1,4-; 1,5-; and 1,8-; N,N-diethylaminoethylamino-substituted anthraquinones from calf thymus DNA were determined using stopped-flow spectrophotometry. Sodium dodecyl sulphate was used to disrupt the equilibrium. In all cases there was an increase in the rate constant with temperature. The dissociation rate constants at 20 degrees, 25 degrees and 37 degrees, were in the order 1-; much greater than 1,8-; greater than 1,4-; greater than daunorubicin and doxorubicin greater than 1,5-disubstituted anthraquinone. The 1,5 disubstituted anthraquinone (VII) thus shows the slowest rate of dissociation from DNA; the DNA complex dissociating more slowly than the DNA complexes of the anthracyclines, daunorubicin and doxorubicin. The result is consistent with the data from computer graphics modelling studies [39] which show that DNA-breathing (transient base pair unstacking) has to occur to allow the docking of the 1,5 disubstituted anthraquinone (VII) into the receptor site. Hence once the 1,5 disubstituted anthraquinone molecule has intercalated into DNA, DNA-breathing is required before dissociation can take place. This is not necessary with the other compounds (though the 1,4-disubstituted anthraquinone (V) can bind in this manner as well). So the very slow dissociation of the DNA/1,5-disubstituted anthraquinone complex relative to that of the DNA complexes of the other compounds examined here, supports the proposed mode of binding [39]. PMID- 3856432 TI - Indomethacin-sensitive 3 alpha-hydroxysteroid dehydrogenase in rat tissues. AB - The purified 3 alpha-hydroxysteroid dehydrogenase (EC 1.1.1.50) of rat liver cytosol is potently inhibited by the nonsteroidal anti-inflammatory drugs in rank order of their therapeutic potency, i.e. by micromolar concentrations that would inhibit cyclooxygenase [T. M. Penning, and P. Talalay, Proc. natn. Acad. Sci. U.S.A. 80, 4504 (1983)]. In the present study, indomethacin-sensitive 3 alpha hydroxysteroid dehydrogenase is shown to exist in seven rat tissues, including those that require androgens for growth (e.g. prostate) and those that rapidly metabolize prostaglandins (e.g. lung). Thus, the reduction of 5 alpha dihydrotestosterone catalyzed by prostatic cytosol was potently inhibited by indomethacin (IC50 = 10 microM), while the reduction of 5 beta-dihydrocortisone catalyzed by liver, lung and testis was more sensitive to inhibition by this drug (IC50 1-3 microM). These data suggest that, under conditions in which cyclooxygenase is inhibited, androgen and cortisone metabolism may be affected. A surprising feature is that the specific activity of the indomethacin-sensitive dehydrogenase was higher in the lung than in tissues that are hormonally responsive (e.g. prostate and testis). PMID- 3856433 TI - [Effect of thymosin alpha 1 on prostaglandin release by murine lymphocytes]. AB - The effects on PGE2 release by lymphocytes obtained from adult thymectomized mice and from normal mice, after incubation with Thymosin alpha 1, were studied. Splenocytes from Tx mice release PGE2 at short time of incubation (15') using 4 micrograms/ml of Thymosin alpha 1 and at longer time of incubation (60'-180' using 4-8 micrograms/ml of Thymosin alpha 1. On the other hand thymocytes release the highest amounts of PGE2 after longer time of incubation (60'-180'). However lymphocytes obtained from normal mice do not release PGE2 amounts comparable with that released by the control samples. This effect shows an interesting interaction between thymic hormones and PGs. PMID- 3856434 TI - Local anaesthetic formulations. PMID- 3856435 TI - "A study of pH of dental local anaesthetic solutions'. PMID- 3856436 TI - 'Cardiac dysrhythmias during dental surgery'. PMID- 3856437 TI - Antimicrobial prophylaxis of endocarditis. PMID- 3856438 TI - Traumatic herniation of buccal pad of fat. PMID- 3856439 TI - Abrasivity of dentifrices on anterior restorative materials. PMID- 3856441 TI - A convert toothbrush injury--18 years later. PMID- 3856440 TI - The longevity of occlusal amalgam restorations in first permanent molars of child patients. PMID- 3856442 TI - Dental factors in Scuba mouthpiece design. PMID- 3856443 TI - Pulmonary candidiasis in a heroin addict: some remarks on its aetiology and pathogenesis. PMID- 3856444 TI - Adverse effects of alcohol in pregnancy. PMID- 3856445 TI - How can addiction occur with other than drug involvements? PMID- 3856446 TI - The costs of alcohol misuse. PMID- 3856447 TI - Patterns of outcome: drinking histories over ten years among a group of alcoholics. PMID- 3856448 TI - Past experience of advice and treatment for drinking problems of patients with alcoholic liver disease. PMID- 3856449 TI - The Severity of Alcohol Dependence Questionnaire (SADQ) in a sample of Irish problem drinkers. PMID- 3856450 TI - Metabolic bone disease and fractures in male alcoholics: a pilot study. PMID- 3856451 TI - Some observations on the Wernicke Korsakoff syndrome in Australia. PMID- 3856452 TI - The haemolysis resistance test (HRT) in chronic excessive drinkers: a pilot study. PMID- 3856453 TI - The collectivity of drinking cultures: a theory of the distribution of alcohol consumption. PMID- 3856454 TI - Do cancers arise from a single transformed cell or is monoclonality of tumours a late event in carcinogenesis? PMID- 3856455 TI - Keratinocyte class II histocompatibility antigen expression. PMID- 3856456 TI - Eating disorders: too little or too much. PMID- 3856457 TI - "Masked" Ph1-chromosome in chronic myelogenous leukaemia (CML). AB - The CML patients with so called masked Ph1-chromosome have been reviewed. Although the importance of c-sis and c-abl oncogenes is gaining popularity yet their role in the genesis of CML remain obscure. Patients with masked Ph1 chromosomes where chromosome 9 is not involved in the translocation(s) will provide a clue to the role of c-abl and/or c-sis in oncogenesis. PMID- 3856459 TI - Binges, vomiting and guilt. PMID- 3856458 TI - Suppression of eating by fenfluramine in patients with bulimia nervosa. AB - Fifteen patients with bulimia nervosa received fenfluramine (60 mg po) or placebo under double-blind, randomly ordered conditions. Two hours later food was presented. Significantly less food was eaten after fenfluramine and the quantity eaten was inversely correlated with serum fenfluramine levels. Significantly fewer patients reported bulimic symptoms during the test after fenfluramine, but no significant effect was demonstrated after leaving the ward. Fenfluramine caused drowsiness but did not reduce hunger ratings. Similarly, eating failed to reduce hunger ratings normally in the patients. These findings suggest that in patients with bulimia nervosa, hunger is reported abnormally and eating is suppressed by fenfluramine. Bulimic symptoms were probably reduced by fenfluramine, which may prove to be a useful treatment for bulimia nervosa. PMID- 3856460 TI - A cognitive behavioural group treatment of bulimia. AB - This study describes a group treatment of bulimia using an adaptation of Fairburn's (1981) cognitive behavioural approach. Thirteen bulimic women with a self-reported average of 24 self-induced vomiting episodes per week were treated in two groups; each group met once a week for 16 weeks. The primary outcome measure was the number of self-reported vomiting episodes; pre- and post treatment measures of eating attitudes, depression, assertiveness, and global level of psychological distress were also evaluated. Vomiting frequency decreased to an average 2.2 times per week (a 91% improvement) with seven patients abstinent by the end of treatment. Significant pre- to post-treatment changes were also demonstrated on measures of depression, eating attitudes, and assertiveness. Six-month follow-up data on 11 patients indicate a mean vomiting frequency of 3.8 per week; six patients maintained their progress. Although Fairburn had greater success using an individual cognitive behavioural approach, the results of the present study are promising for the development of a cost effective treatment. PMID- 3856461 TI - 4-Demethoxydaunorubicin (Idarubicin) in refractory or relapsed acute leukemias. A pilot study. AB - Twenty-five adults with previously treated acute leukemia were treated with 4 demethoxydaunorubicin (Idarubicin) with a daily dose of 8 mg/m2 for 3 days intravenously. Complete remission was achieved in 3 of 18 patients with acute nonlymphoblastic leukemia (ANLL) and 2 of 6 with lymphoblastic leukemia. Complete remissions were observed in two of eight ANLL patients refractory to cytarabine, anthracycline, and m-Amsa (amsacrine), indicating a lack of cross-resistance between these drugs and Idarubicin. The median duration of remission was 8 weeks. The main major toxicity of Idarubicin therapy, severe myelosuppression, cannot be considered a toxic effect because it was desired in this case list. Our preliminary results indicate that Idarubicin has significant activity against refractory adult acute leukemia. PMID- 3856462 TI - Genetic studies in multiple myeloma. II. Immunoglobulin allotype associations. AB - A weakly positive but statistically significant association between HLA-Cw5 and myeloma has been reported in black patients. The authors attempted to determine whether immunoglobulin allotypes of the Gm series demonstrate any such association. They were identified in the sera of 29 black patients and 160 healthy black control subjects by a standard hemagglutination-inhibition technique. The results indicate that the G3m(g5) allotype is significantly associated with myeloma. Furthermore, addition of that immunoglobulin allotype to a Gm phenotype that is negatively associated with myeloma gives a phenotype that is positively associated with the disease, both associations being statistically significant. It was concluded that G3m(g5) is a marker of inherited susceptibility to myeloma in black Americans. Furthermore, as G3m(g5) is present in almost 50% of normal control subjects, it was proposed that its expression in a much greater proportion of patients may be related to an underlying genetic rearrangement that is also associated with neoplastic transformation. PMID- 3856463 TI - Acquisition of a Philadelphia chromosome concomitant with transformation of a refractory anemia into an acute leukemia. AB - The authors present a case of Philadelphia (Ph1) positive acute myeloblastic leukemia (AML) following a refractory anemia with excess of blasts (RAEB) that had been Ph1-negative for 17 months. During the transformation of RAEB into AML, the Ph1 was discovered in 100% of the examined cells. With therapy a partial remission was obtained, during which some 46,XY cells reappeared mixed with Ph1 cells along with a new clone: 47,XY,+11 originating from a Ph1-negative cell. During the terminal blast crisis, the karyotype returned to 46,XY,Ph1. The AML lasted 21 months. The authors discuss: (1) the significance of Ph1-positive AML with a review of the literature; (2) the de novo acquisition of a Ph1 during the course of a blood disorder; and (3) the meaning of a second abnormal clone originating from 46,XY cells. PMID- 3856464 TI - The adverse effect of prolonged prednisolone pretreatment in children with acute lymphoblastic leukemia. AB - Between 1971 and 1981, 699 children were diagnosed to have acute lymphoblastic leukemia (ALL) in Hungary. 34 of these children had received prednisolone therapy prior to the establishment of the diagnosis. The most frequent presumptive diagnoses that prompted steroid treatment were aplastic conditions and arthritic disorders. Leukemia was diagnosed when the presenting symptoms reappeared usually several weeks after the initiation of steroid therapy and often following withdrawal of the drug. Initial leukemic burden, as judged by leukocyte count and hepatosplenomegaly, was smaller in these patients than in other children with leukemia at the time of diagnosis. Although they entered remission at the same rate as the other patients, the length of continuous complete remission was significantly shorter in the prednisolone pretreated group. It appears that prolonged prednisolone therapy given before remission induction imparts a distinct unfavorable prognosis. PMID- 3856465 TI - Institutional performance in application of the FAB classification of acute leukemia. The Southwest Oncology Group experience. AB - Institutional performance in application of the French-American-British (FAB) classification of acute leukemia in The Southwest Oncology Group is presented, demonstrating a disparity between institutional and expert performance. A significant improvement is shown with an educational effort coupled with experience in use of the classification, and the importance of cytochemistry in the use of the classification is illustrated. A simplification of the classification, merging M1, M2, and M4 as M7, is proposed. This simplification improves institutional performance in use of the classification, while preserving distinctions that appear clinically important. PMID- 3856466 TI - Plasma membranes from normal and chronic myeloid leukemic granulocytes: isolation and two-dimensional polyacrylamide gel electrophoretic analysis. AB - Normal human granulocytes obtained by Ficoll-Hypaque sedimentation were subjected to mild hypotonic shock and disruption by shear. The homogenate was fractionated by differential centrifugation and equilibrium ultracentrifugation to yield a plasma membrane preparation constituting 1% of the total cellular protein and enriched fifteen- and six-fold in alkaline phosphatase and Mg2+-adenosine triphosphatase activities, respectively. Granulocytes obtained from patients with chronic myeloid leukemia (CML) were identically processed. The protein constituents of both the normal and CML granulocyte plasma membranes were resolved by two-dimensional polyacrylamide gel electrophoresis. Comparison of the stained gels revealed CML-associated quantitative changes in four out of the fifteen protein spots examined. Thus, this analysis has permitted identification of those protein moieties that deserve attention for further isolation and purification. PMID- 3856467 TI - A study of chromosome content of Friend virus-induced mouse erythroleukemia cells (clone M2) via karyotype reconstruction. AB - Clone M2 of a Friend virus-induced mouse erythroleukemia cell line has been studied using G- and C-banding and Ag-staining. The modal chromosome number was 37. The population showed a remarkable karyotype stability and a similar chromosome content. Nullisomy and monosomy were recorded for 12 pairs of chromosomes. Determination of the origin of all 13 marker chromosomes made it possible to establish exact chromosome content of each cell. The generalized reconstructed karyotype of the cell line investigated was established by reconstructing cell karyotypes. This made it possible to demonstrate the retention of a mouse diploid chromosome set (40,XY), constant extra copies of chromosomes #2, #3, and #19, and for some cells, #9. PMID- 3856468 TI - Marker chromosomes in direct preparations of human large bowel tumors. AB - A survey of 257 marker chromosomes in 48 primary human large bowel adenocarcinomas showed that 44% were markers with recognized patterns. Chromosomes #1, #3, #5, #8, #9, #13, and #17 were involved most frequently. Markers related to chromosomes #7 and X were not seen in any recognizable form. The unidentified chromosomes were classified as markers with abnormal banding regions. In correlating tumor location and stage of invasion with markers, there were fewer markers in tumors from the right side. However, there was little difference in the number of markers seen in the left-sided tumors, irrespective of histopathologic stage, suggesting that function and microenvironmental conditions between various parts of the colon may be related to these differences. The most striking observation is that 21% of all tumors analyzed were without any obvious markers. PMID- 3856469 TI - Chromosomal abnormalities in lymphoid crisis of chronic myelogenous leukemia. AB - The karyotypes in six patients with Ph-positive chronic myelogenous leukemia (CML) were investigated during the lymphoid crisis associated with high levels of terminal deoxynucleotidyl transferase (TdT) and/or the common acute lymphoblastic antigen (CALLA). Five of the six patients had only the Ph chromosome, with no other karyotypic abnormalities. The remaining one patient had a hypodiploid karyotype: 44,XY, -1, + der(1;?)(p22;?), -3, -4, -6, -7, -8, -9, +22q-, + mar1, + mar2, + mar3. In four patients with lymphoid crisis expressing TdT and CALLA, the response to treatment with vincristine (VCR) and prednisolone (PRD) was satisfactory, except for the one patient whose karyotype was hypodiploid. A discussion is presented as to whether or not there is a correlation between the karyotypic changes, using banding methods, and TdT expression in patients whose blast cells were categorized morphologically as lymphoblastic at the onset of the blastic phase of CML. Sequential chromosome examinations during the chronic and blastic phases of CML were also performed in this study. PMID- 3856470 TI - Unusual Ph translocations in the French prospective study on chronic myeloid leukemia. Groupe Francais de Cytogenetique Hematologique. AB - In a prospective and collaborative cytogenetic study of chronic myelocytic leukemia (CML) in France, 234 new patients were collected in 3 yr. A standard Ph chromosome was present in 80.7% of the cases; 13.1% of the patients had additional chromosomal abnormalities, and 5.9% of the patients had an unusual Ph translocations (3 simple, 11 complex). Geographical differences in the incidence of the unusual Ph translocations were present. PMID- 3856471 TI - Clonal evolution in acute promyelocytic leukemia. PMID- 3856472 TI - Translocation X;10 in a case of congenital acute monocytic leukemia. AB - Unusual cytogenetic findings were noted in the leukemic cells from a patient with congenital acute monocytic leukemia (AMol or M5, according to the FAB classification), whereas, the chromosomes of cultured skin fibroblasts were normal. G-banded karyotypes of leukemic cells showed an X-autosome translocation, 46,X,t(X;10)(Xpter----q13::10q11.2----qter)(10pter---- q11.2::Xq28----q13:: Xq28- --qter). Review of reported cases of acute nonlymphocytic leukemia (ANLL) with rearrangements involving chromosomes #10 or X showed a high frequency of abnormalities of the short arm of #10 in myelomonocytic (M4) and monocytic (M5) leukemias, particularly in patients less than 2-yr-of-age. Although previously reported cases of ANLL in infants are predominantly of these types, the translocation observed in this case is unique. Fragile sites known to exist on chromosomes #10 and X are not associated with neoplasia and, except for Xq27-28, were not at the breakpoints of the case presented. The precise location of a human cellular oncogene recently identified on the X chromosome remains unknown. PMID- 3856473 TI - 5q- in a case of blastic phase chronic myeloid leukemia. PMID- 3856475 TI - Localization of anti-osteogenic sarcoma monoclonal antibody 791T/36 in a primary human osteogenic sarcoma and its subsequent xenograft in immunodeprived mice. AB - A primary human osteogenic sarcoma was visualized in situ by external gamma camera imaging following administration of 131I-labelled anti-osteogenic sarcoma monoclonal antibody 791T/36. A xenograft of the tumour established in immunodeprived mice also showed localization of 131I-791T/36 determined by both gamma-camera imaging and organ distribution studies. Radiolabelled normal immunoglobulin showed no tumour localization. Expression of the 791T/36-defined antigen on xenografted tissue was further confirmed by reaction of its in vitro cultured cells with fluorescein-labelled 791T/36 antibody. PMID- 3856474 TI - A case of acute lymphoblastic leukemia with t(10;19)(q26;q13). AB - We report a patient with non-B non-T acute lymphoblastic leukemia (ALL) who has translocation t(10;19)(q26;q13), which has not been reported previously. A brief review of the translocations involving chromosome #19 in ALL is also presented. PMID- 3856476 TI - Full expression of blood group-related, transplantation-related, and carcinoembryonic antigens in human colorectal cancer cells with different degrees of phenotypic differentiation. AB - Seven established human colon carcinoma cell lines with distinct degrees of phenotypic differentiation were evaluated for the presence of blood group-related and transplantation-related antigens in relation to their production of carcinoembryonic antigen (CEA). All lines presented A and B antigens regardless of the patients' original red blood cell type. However, tumor cells from patients originally classified as O-type had lower expression of both A and B antigens and high production of CEA. Cells from patients with an original A type had low to undetectable CEA production and high expression of both A and B antigens. There was no particular segregation of transplantation-related antigens with respect to phenotypic expression. All lines presented HLA-A, -B, and -C, as well as -DR antigens. These results demonstrate that colon carcinoma cells have the ability to fully express both blood group-related and transplantation-related antigens, even if discordant with the donor's red blood cell phenotype. Furthermore, it appears that expression of A antigen is intimately related to synthesis of CEA. PMID- 3856477 TI - Evolution of methotrexate resistance of human acute lymphoblastic leukemia cells in vitro. AB - A human acute lymphoblastic T-cell line, MOLT-3, was fed with Roswell Park Memorial Institute Medium 1640 supplemented with 10% fetal bovine serum and antibiotics which contained increasing concentrations of methotrexate (MTX). The development of drug resistance was associated initially with progressive decrease in MTX transport. When the cells became 200-fold resistant, a rise in the dihydrofolate reductase was noted which was short-lived in the absence of the drug. A 10,000-fold increase in MTX resistance was accompanied, in addition to further decrease in MTX transport, by a 10-fold increase in the dihydrofolate reductase activity. While the purely transport-related resistant cell lines had a collateral sensitivity to lipid-soluble antifols, the sublines which had both transport- and enzyme-related MTX resistance contained a subpopulation highly resistant to these antifols. Chromosome analysis of the subline with increased dihydrofolate reductase activity showed an expanded abnormally banded region in chromosome 5. PMID- 3856478 TI - Single-dose pharmacokinetic study of 13-cis-retinoic acid in man. AB - A pharmacokinetic study of 13-cis-retinoic acid was performed in nine patients following administration of a single oral dose of 80 mg. An average lag time of 1.2 hours was observed, followed by fast absorption, with a mean half-life of 0.5 hour. Peak plasmatic concentration of 733 ng/ml occurred at 2.3 hours. The disposition profile showed a rapid distribution half-life of 1.3 hours and a terminal elimination half-life of 24.7 hours. No 13-cis-retinoic acid was detected unchanged in urine. An important interpatient variability was noted. PMID- 3856479 TI - Coagulopathy induced by continuous infusion of high doses of human lymphoblastoid interferon. AB - Seven patients with myeloblastic leukemia were treated for 10 days with high-dose (15 or 30 million units/m2/day), human lymphoblastoid interferon (Wellferon) by continuous iv infusion. All patients developed prolonged activated partial thromboplastin time, and four developed prolonged prothrombin time. Factor assays demonstrated low levels of II, VII, IX, X, and XII. Coagulation abnormalities improved after discontinuation of interferon therapy. PMID- 3856480 TI - Phase I clinical evaluation of diaziquone in childhood cancer. AB - Diaziquone (AZQ), a new lipid-soluble antitumor agent, was given by 15-30-minute infusion on a daily X 5 schedule to 47 children with refractory solid tumors and leukemia. The starting daily dose of 6 mg/m2 was escalated to 10 and 35 mg/m2 in patients with solid tumors and leukemia, respectively. In patients with solid tumors, myelosuppression was dose-limiting at a daily dose of 10 mg/m2. In patients with leukemia, prolonged pancytopenia and bone marrow hypoplasia were observed at daily doses greater than or equal to 25 mg/m2. At these higher doses, significant hyperbilirubinemia associated with sepsis was also seen. Corresponding increases of transaminases or alkaline phosphatase and significant hemolysis were not noted. The maximum tolerated dose for this daily dose schedule was 9 mg/m2 in children with solid tumors and 25 mg/m2 in children with relapsed leukemia. Responses to AZQ included stabilization of disease in osteosarcoma, neurofibrosarcoma, pinealoma, and ependymoma. A patient with juvenile chronic myelocytic leukemia in blast crisis converted back to the chronic phase. A patient with acute lymphoblastic leukemia had a substantial decrease in cerebrospinal fluid blast count. Bone marrow aplasia was achieved in children with acute lymphoblastic leukemia and acute nonlymphoblastic leukemia; however, remissions were not achieved. A phase II study of AZQ in children with refractory malignancies is now being performed by the Childrens Cancer Study Group. PMID- 3856481 TI - Chemical and histological changes during development of artificial caries. PMID- 3856482 TI - A scanning electron microscopic study of surface changes during development of artificial caries. PMID- 3856483 TI - Kinetic and thermodynamic aspects of enamel demineralization. PMID- 3856484 TI - Development of carious-like lesions in partially saturated lactate buffers. PMID- 3856485 TI - Transport and phosphorylation of xylitol by a fructose phosphotransferase system in Streptococcus mutans. PMID- 3856486 TI - Additive inhibitory effects of combinations of fluoride and chlorhexidine on acid production by Streptococcus mutans and Streptococcus sanguis. PMID- 3856487 TI - Effects of ionic organic materials on enamel demineralization. PMID- 3856488 TI - Changes in caries prevalence among adolescents in Budapest, Hungary, from 1975 to 1982. PMID- 3856489 TI - Merocyanine 540 recognizes membrane abnormalities of erythrocytes in chronic myelogenous leukemia. AB - Merocyanine 540 is a fluorescent dye which stains erythrocytes that have lost their normal membrane phospholipid asymmetry. Because erythrocytes from patients with chronic myelogenous leukemia have been reported to display this abnormal phenotype, peripheral blood erythrocytes from such patients were examined for their ability to stain with the dye. Erythrocytes from all patients with active disease states stained, whereas neither erythrocytes from normal, healthy individuals nor from a patient whose disease symptoms were eliminated by chemotherapy stained. These results suggest that merocyanine 540 may have utility in the clinical evaluation of chronic myelogenous leukemia. PMID- 3856490 TI - [Modern clinical and laboratory diagnosis of acute leukemias in childhood]. PMID- 3856491 TI - Plasma fibronectin in various hemopathic diseases. AB - Plasma fibronectin was determined by laser nephelometric immunoassay in two populations: (a) healthy subjects separated into three age groups (16-29 yr, 30 50 yr and over 50 yr) and, (b) patients with various hemopathic diseases without any infection or any therapy. Results showed that fibronectin levels in a healthy population were strongly influenced by age. An increase of human plasma fibronectin was shown to occur with age. Results in hemopathic patients were expressed in terms of percentage of mean deviations as compared to normal mean values for the corresponding age range. We found that plasma fibronectin was significantly decreased in acute myeloblastic leukemia, especially in transfused patients, polycythemia vera, osteomyelofibrosis. Waldenstrom disease, benign dysproteinemia, refractory anemia and stage IV non-Hodgkin malignant lymphoma. Plasma fibronectin-decreased levels appear to be of prognostic value in the evolution of malignant hemopathic diseases. PMID- 3856492 TI - Non-dermatological complications and genetic aspects of the Rothmund-Thomson syndrome. AB - We report two new cases of Rothmund-Thomson syndrome which emphasize the less well-known non-dermatological complications, namely: hypodontia, soft tissue contractures, proportionate short stature, hypogonadism, anaemia and osteogenic sarcoma. Genetic analysis of these and previously reported pedigrees supports autosomal recessive inheritance. PMID- 3856493 TI - Disease risk estimates from marker association data. Application to individuals at risk for hemochromatosis. AB - The recessive hemochromatosis gene is both linked to the HLA region on chromosome 6 and nonrandomly associated with certain HLA alleles. The use of linked HLA markers to trace known hemochromatosis genes within a family is well known, but using the population associations to detect unsuspected disease genes has not been fully appreciated. Thus, while HLA typing has been utilized to detect asymptomatic affected siblings, it has not been applied to other relatives. We propose a method in which Bayes' rule is used to calculate the probability that designated HLA marker haplotypes, brought into the family by spouses, have attendant hemochromatosis genes. The A3, B14 and A3, B7 haplotypes are such high risk markers. When these haplotypes are inherited from the unaffected parent, the offspring of an individual with hemochromatosis is at marked increased risk for the disease. When A3 and B14 are absent from the HLA marker haplotype, however, the risk of having a hemochromatosis gene is less than that for the general population. This approach should be helpful in identifying family members at a higher risk for developing the disease and who may then undergo appropriate periodic screening. PMID- 3856494 TI - Cystic fibrosis; hint of linkage with F13B. PMID- 3856495 TI - Acute myelomonocytic leukaemia developing in a patient with psoriasis treated with oral 8-methoxypsoralen and longwave ultraviolet light. PMID- 3856496 TI - Retinoids and multiple trichoepitheliomata. PMID- 3856497 TI - Echocardiographic findings in Pompe's disease with left ventricular obstruction. AB - Two infants with Pompe's disease (type II glycogenosis) showing echocardiographic evidence of obstructive cardiomyopathy are described. On M-mode and two dimensional (2-D) echocardiography there was a severe hypertrophy of the interventricular septum, free, and posterior left ventricular wall with midsystolic closure of the aortic valve. The combined echocardiographic and electrocardiographic findings are helpful in the clinical diagnosis of this severe disease. PMID- 3856498 TI - Solid leukemic tumor. An uncommon presentation of a common disease. AB - Granulocytic sarcoma of the clavicle occurred in a 17-year-old boy. The patient had a densely sclerotic bony lesion with periosteal reaction and no peripheral blood manifestations of leukemia. Supraclavicular adenopathy developed after a preliminary diagnosis of Ewing's sarcoma was made, and a second biopsy was performed. Electron microscopy of the tissue showed Auer bodies and Charcot Leyden granules characteristic of acute myelogenous leukemia. Combination chemotherapy, local irradiation, and clavicular resection have left the patient with no evidence of disease 50 months after diagnosis. Leukemia may appear as a solitary bone tumor before hematologic changes develop. Granulocytic sarcomas can have the radiographic and histologic appearance of primary bone tumors. Bone marrow examination and electron microscopy of biopsy tissue are diagnostic of leukemia and are important in all hospital investigations of round-cell tumors of bone. PMID- 3856499 TI - Evaluation of radiographic findings in painful hip arthroplasties. AB - A retrospective study of 50 surgically confirmed painful hip arthroplasties was performed to identify the roentgenographic findings that are most important in the detection of component loosening or infection. Plain film radiographs and subtraction arthrograms were reviewed in all cases, and specific features revealed by these two radiographic modalities indicative of component failure were identified. Seventeen patients had radioisotope bone scans and 13 of these had additional gallium scans. Plain film roentgenograms correctly identified loosening in 69% of acetabular and 84% of femoral components. Subtraction arthrography had an accuracy of 96% for both acetabular and femoral component loosening. Scintigraphic studies were correct in 77% of acetabular and 89% of femoral components; gallium scans identified 77% of infected hip prostheses. PMID- 3856500 TI - Myositis ossificans with Ga-67 citrate positivity. AB - A 16 year-old boy presented with a firm mass within the left thigh. Ga-6 7 citrate and bone scintigraphy revealed soft tissue radiotracer accumulation within the mass lesion. Radiographs and xerography of the left thigh revealed calcification within the soft tissue mass typical of myositis ossificans. The patient's clinical course was uneventful. PMID- 3856501 TI - Isotretinoin kinetics after 80 to 320 mg oral doses. AB - Twelve healthy male subjects received 80, 160, 240, and 320 mg doses of oral isotretinoin as multiples of 40 mg capsules separated by 2-week washout periods in a randomized, crossover design. Blood samples were drawn at specific times over a 72-hour period after dosing. Blood concentrations of isotretinoin as well as its major metabolite, 4-oxo-isotretinoin, were determined by a specific HPLC method. In addition to the normal laboratory battery of tests, serum triglyceride levels were determined before the first dose and again 72 hours after each of the four doses. Mean (+/- SD) maximum concentrations after 80 to 320 mg doses were 366 +/- 159, 820 +/- 474, 1056 +/- 547, and 981 +/- 381 ng/ml, whereas the respective AUC0-infinity values were 3690 +/- 1280, 7030 +/- 4140, 9780 +/- 6080, and 9040 +/- 2900 ng X hr/ml. The observed apparent elimination t1/2 remained approximately the same (14.7 hours) for each dose. The maximum concentration and AUC values for isotretinoin appear to be dose proportional from 80 to 240 mg but plateau at the 320 mg dose level. Therefore, because isotretinoin blood concentrations may not increase with higher doses in the fasting state, single, oral doses in excess of 240 mg should be used with caution. The data also suggest that elevated triglyceride levels are not a simple function of isotretinoin blood concentrations across the entire study population and dose range studied, but that in subjects with triglyceride levels in excess of the normal range triglyceride levels were positively related to isotretinoin blood concentrations. PMID- 3856502 TI - Influence of age, sex and potassium excretion on urinary prostaglandins in children. AB - Measurement of urinary 6-ketoprostaglandin (PG) F1 alpha and PGE2 excretion in 83 healthy children, aged 5-15 years, revealed that supervised 4 h urine collections under mild water diuresis provided more consistent results than overnight 12 h urine collections. Males had higher urinary excretion of 6-keto-PGF1 alpha but not of PGE2 compared with females. Urinary potassium was related to 6-keto-PGF1 alpha in both 4 and 12 h urine collections and urinary sodium to 6-keto-PGF1 alpha in 4 h collections only. In the sexes combined multiple regression analyses revealed age as the only significant influence on prostanoid excretion (P = 0.001). Thus age and sex and dietary potassium intake need to be considered in studies of urinary prostanoids in children. PMID- 3856503 TI - Dental xeroradiography: a review and update for dental medicine. PMID- 3856504 TI - Understanding dental pain: Part II. PMID- 3856505 TI - Managing digital habits in children. PMID- 3856506 TI - Oral viral leukoplakia ("hairy" leukoplakia): a new oral lesion in association with AIDS. PMID- 3856507 TI - Therapeutic effect of cryosurgery of murine osteosarcoma--influence on disease outcome and immune function. AB - Experiments comparing conventional operative treatment and cryosurgery of a murine osteosarcoma showed that local tumor destruction by freezing in situ was similar or superior to amputation concerning survival and formation of metastasis, depending on tumor stage. Limited local resection was less effective. Immune functions affected by cryosurgical tumor destruction included depression of natural killer cell activity and decrease of tumor-specific autologous IgG antibodies in the serum. PMID- 3856508 TI - [Study on the association of HLA with idiopathic cardiomyopathy]. PMID- 3856509 TI - [Prolymphocytic leukemia. Report of 8 cases]. PMID- 3856510 TI - Quantitation of anthracyclines in human hematopoietic cell subpopulations by flow cytometry correlated with high pressure liquid chromatography. AB - The major white cell subpopulations present in bone marrow and peripheral blood can be discriminated by forward and perpendicular light scatter two-parameter flow cytometry (FCM). Fluorescent properties of anthracycline antibiotics allow measurement of the concentration of these cytotoxic drugs in hematopoietic cells by FCM as a third parameter. Analysis of scatter-gated fluorescence histograms provides quantitative information about the cellular concentration of at least four cell categories in human blood and bone marrow cells. A good correlation was found between the mean cellular fluorescence measured by FCM and the overall cellular concentration of adriamycin, daunomycin, and their main metabolites determined with high-pressure liquid chromatography (HPLC). In incubation experiments with human hematopoietic tissues, the final concentration of various anthracyclines in subpopulations of white cells appeared to be dependent on cell density, incubation time, temperature, and type of compound and its concentration. FCM analysis is a rapid, sensitive, and quantitative method for measurement of cellular anthracycline concentrations in subpopulations and therefore provides an useful new tool in monitoring chemotherapy. PMID- 3856511 TI - Crohn's disease and leukemia. PMID- 3856512 TI - [Electron spectroscopic research on the corrosion of a gold-plated non-precious metal design]. PMID- 3856513 TI - [Comparative materials research on glass ionomer cements of different chemical compositions with reference to clinical findings]. PMID- 3856514 TI - [Collagen-hydroxyapatite implants for treating periodontal bone defects (experimental animal research)]. PMID- 3856515 TI - [Periodontal reaction of the teeth involved in the fracture gap in mandibular fractures]. PMID- 3856516 TI - [Computed tomographic staging of the dysfunctional transformation of the condylar head]. PMID- 3856517 TI - [Biochemical capacity of glucan-producing cariogenic Streptococci from human dental plaque with special reference to their acid-forming capacity]. PMID- 3856518 TI - Transport of beta-globin mRNA from nuclei of murine Friend erythroleukemia cells. Reversible inhibition of transport by the oxidizing sulfhydryl reagent o iodosobenzoate. AB - An in vitro assay system for analysis of beta-globin mRNA transport is described. Nuclei isolated from murine Friend erythroleukemia cells induced to synthesize globin mRNA, were incubated in micro-assays. By electrophoresis and hybridization analysis, released 9-S beta-globin mRNA was shown to be undegraded. After direct blotting, the released mRNA was quantified by hybridization with a labeled plasmid containing a beta-globin DNA restriction fragment. The inducibility of beta-globin mRNA transport corresponded to that previously reported for the release of rapidly labeled RNA in other assay systems. In contrast to the ineffectiveness of high concentrations of the sulfhydryl reagent iodoacetate, low concentrations of the oxidizing sulfhydryl reagent, o-iodosobenzoate, inhibited the release of beta-globin mRNA from nuclei of erythroleukemia cells, as well as the release of rapidly labeled RNA from rat liver nuclei. The inhibitory effect of the oxidizing agent on beta-globin mRNA transport could be reversed by postincubation of the nuclei with the reducing agent, dithiothreitol. The potential role of disulfide bond formation on RNA transport is discussed. PMID- 3856519 TI - In vitro binding of 67Ga to isolated rat liver cells. AB - In order to understand the mechanism of the accumulation of gallium citrate (Ga 67) in normal liver, an in vitro investigation system was developed using isolated rat liver cells, and various basal factors relating to 67Ga binding to normal rat liver cells were studied. In this study, the values of 67Ga binding to the liver cells increased in parallel with the number of cells; however, binding was hardly affected by higher doses of 67Ga. The binding of 67Ga to the cells was inhibited by the presence of ethylenediaminetetraacetate (EDTA) and citrate. Phosphate and bicarbonate (10(-2) M) slightly inhibited 67Ga binding to the cells. The binding of 67Ga to the cells increased as the pH was decreased. These results suggest that 67Ga binding to normal rat liver cells may occur in 'free' gallium. Moreover, the utilization of isolated rat liver cells is useful for understanding the 67Ga accumulation mechanism in normal liver. PMID- 3856520 TI - Prediction of lower third molar impaction from the frontal cephalometric projection. PMID- 3856521 TI - Orthodontic tooth movement through the midpalatal suture area after surgical removal of the suture. An experimental study in dogs. PMID- 3856522 TI - Dental maturity as an indicator of chronological age: the accuracy and precision of three methods. PMID- 3856523 TI - The facial skeleton in children affected by rheumatoid arthritis--a roentgen cephalometric study. PMID- 3856524 TI - Dento-facial morphology in patients with advanced attrition. PMID- 3856525 TI - Application in children of a new method for the measurement of forces from the lips on the teeth. PMID- 3856526 TI - Elevated chondroitin 6-sulfotransferase activity in fetal bovine serum. AB - Assay conditions for chondroitin sulfotransferase in serum were established using a rapid and simple paper disk method. Sulfotransferase activities towards endogenous serum glycosaminoglycans and exogenously added chondroitin were determined for fetal, newborn and adult bovine sera. The results indicate that 3' phosphoadenosine 5'-phosphosulfate (PAPS); chondroitin 6-sulfotransferase activity in fetal calf serum is several times that in newborn or adult bovine sera. The enzyme transfers sulfate onto position 6 of internal nonsulfated galactosamine units of endogenous and exogenous chondroitin. PMID- 3856527 TI - Society at large: economics, cultural trends, work trends, demographics and technology. PMID- 3856528 TI - The health care system: changes and implications. PMID- 3856529 TI - Higher education and the health professions. Issues and trends. PMID- 3856530 TI - Consumer perceptions of the present and potential dental hygienist role. PMID- 3856532 TI - The first step: your new patient's history. PMID- 3856531 TI - Report of ADHA Survey Committee. PMID- 3856533 TI - Some careful steps to a stronger patient base. PMID- 3856534 TI - Staff salaries level or down for 1983. PMID- 3856535 TI - Preferred dental terminology. PMID- 3856536 TI - Successful newsletters focus on patient needs. PMID- 3856537 TI - Is your recall system all it should be? PMID- 3856538 TI - Dollars and sense fee collection. PMID- 3856539 TI - Two-cent "cure" calms young patients. PMID- 3856540 TI - Identification of HLA antigens in familial and non-familial epidermodysplasia verruciformis. AB - The distribution of HLA specificities was studied in 7 non-familial cases of epidermodysplasia verruciformis (EV) and in 5 cases from one family. In the non familial cases, six antigens of locus A (2, 3, 9, 10, 24, 26) and eight antigens of locus B (7, 15, 27, 35, 37, 38, 40, 41) were found. All 5 cases of familial EV possessed 26,5 haplotype, however, 6 of the remaining 12 healthy family members inherited the same haplotype. There is no association of EV with HLA-A and B antigens. However, the defect of cell-mediated immunity, present in all EV cases, may indicate the association of the disease with other major histocompatibility products (i.e. loci on immune response genes). PMID- 3856541 TI - Factor B (Bf) and glyoxalase genes in insulin-dependent diabetes mellitus. AB - The frequency distribution of alleles controlled by the factor B (Bf) and glyoxalase genes that are found close to the HLA system on chromosome 6 was studied in 170 insulin-dependent diabetic patients. The data were compared with those for HLA-A, -B and -DR antigens and were related to age of onset of diabetes. All the diabetics were ketosis prone and on permanent insulin therapy. A significant excess of BfF1 was seen in the diabetic patients (p less than 10( 4]. Glyoxalase frequency distribution showed no significant deviation from controls, whereas HLA-DR3 (p less than 10(-4] HLA-DR4 (p less than 10(-4] were increased. Breakdown of data by age of diagnosis of disease showed no increase in the frequency of BfF1 and GLO1-2 but an increase of HLA DR3 and DR4 in patients with early onset diabetes. The findings of the study are consistent with data reported by others investigators and support the notion that one or more genes mapping close to the HLA A. B and DR and to the Bf loci confer susceptibility to insulin dependent diabetes. PMID- 3856542 TI - Effects of murine tumor necrosis factor on Friend erythroleukemic cells. AB - Tumor necrosis inducing factor (TNF), a 140,000 molecular weight glycoprotein present in the serum of Corynebacterium parvum endotoxin-treated mice, was cytotoxic toward Friend virus-transformed erythroleukemic cells (FELC). These cells grow in culture as undifferentiated pro-erythroblasts but can be induced to differentiate in a limited fashion along the erythroid pathway to orthochromatic normoblasts by various agents such as dimethylsulfoxide (DMSO). Partially and highly purified preparations of TNF were cytotoxic toward logarithmically growing FELC whereas a comparable serum protein fraction from C. parvum treated mice or endotoxin from E. coli had no effect upon FELC viability. DMSO-induced cells were more sensitive to the action of TNF requiring only about half the concentration needed to produce 50% kill in noninduced cells. Inhibition of hemoglobin formation was TNF dose-related and could be decreased by 94%. TNF was also cytotoxic toward DMSO-induced cells in stationary phase and mitomycin C treated noninduced FELC. Neuraminidase modification of the surface of FELC increased the cytotoxicity of TNF by 50%. These results demonstrate that TNF destroys FELC whether they are nondividing, dividing or partially differentiated and suggest that TNF may accomplish this by affecting cell metabolism after internalization. PMID- 3856543 TI - [Possibility of using the "Hemalog D" automatic blood analyzer for the differential diagnosis of hemoblastoses]. PMID- 3856544 TI - [Method of detecting the early stage of acute leukemia in patients with cytopenias]. PMID- 3856545 TI - The effects of prostaglandin F2 alpha in the human eye. AB - The ocular effects of 200 micrograms of topically applied prostaglandin F2 alpha were studied in 18 nonglaucomatous volunteers. A fall in intraocular pressure was seen in the prostaglandin-treated eyes when compared with the placebo-treated control eyes. The maximum intraocular pressure reduction was observed at the 7th h and hypotensive ocular effect persisted for 24 h. Prostaglandins did not produce any change in pupillary diameter or signs of intraocular inflammation visible by anterior segment biomicroscopy or iris fluorescein angiography. The drug caused side effects: conjunctival hyperemia was constant and many patients complained of ocular smarting and headache. It could be useful in the treatment of ocular hypertension, although its usefulness would be limited by the side effects. PMID- 3856546 TI - Blood-retinal barriers in juvenile diabetics in relation to early clinical manifestations, HLA-DR types, and metabolic control. AB - Eighty-seven diabetics 8.5-26 years old (mean +/- SD 15.3 +/- 3.9) and 32 healthy non-diabetic controls 8-27 years old (13.9 +/- 4.3) were included in the study. They had had the disease for 2 months to 19 years (5.8-4.0 years). Seventy-two of the diabetic patients were HLA-DR type, 13 patients had DR 3 alone, 25 DR4, 33 DR 3,4 and 1 patient was neither DR 3 nor 4. The mean fluorescein concentration in the vitreous body 3.5-7 mm from the retinal surface at 60 min after intravenous administration of fluorescein was 15.5 +/- 11.9 ng/ml in the diabetics and 7.2 +/ 3.7 ng/ml in the non-diabetic controls (P less than 0.001). The diabetics still in partial remission had an almost normal blood-retinal barrier (BRB; 7.9 +/- 4.8 ng/ml) while about 55% of the diabetics beyond remission had impaired barrier function. Abnormal leakage was found in some patients who had had diabetes for less than 2 years and also before the onset of puberty. The incidence of abnormal leakage increased with increasing age and duration. There was a positive correlation between fluorescein leakage and the blood glucose level at the onset of diabetes (P less than 0.01). There was no statistically significant relationship between specific HLA-DR types and abnormal leakage. A defect BRB was significantly correlated with poor short-term metabolic controls, expressed as glucosuria index during the last week before examination with vitreous fluorophotometry. Prospective studies will show whether abnormal BRB gradually leads to irreversible retinopathy. PMID- 3856547 TI - [Interpretive analysis of anthropological methods as a tool in the determination of the typology of normal external anatomy of the Europeoid or Caucasian face. I and II]. PMID- 3856548 TI - [Diagnosis of tooth-jaw abnormalities using EDP]. PMID- 3856549 TI - [Treatment motivation of patients in orthodontics with reference to psychosomatic relations]. PMID- 3856550 TI - [The use of extraoral forces in relation to removable appliances in rationally planned orthodontic treatment]. PMID- 3856551 TI - [Treatment of unilateral crossbite]. PMID- 3856552 TI - [Multiple extractions of permanent teeth in the orthodontic treatment plan]. PMID- 3856553 TI - [Amelogenesis imperfecta--orthodontic problems and their solution using multiband appliances and temporary steel crowns]. PMID- 3856554 TI - [Can a relationship between tongue function and mandibular shape in patients with Pierre-Robin syndrome be demonstrated?]. PMID- 3856555 TI - Prostaglandin-F2 alpha stimulates reproductive behavior of female paradise fish (Macropodus opercularis). AB - The function of prostaglandin-F2 alpha (PGF2 alpha) in reproductive behavior of adult female paradise fish (Macropodus opercularis) was evaluated. In experiment 1, females were allowed to spawn normally with a male and were left with that male until the following day when testing occurred. Subjects were then randomly assigned to one of three groups: PGF2 alpha (N = 8), vehicle control (N = 3), or a handling control (N = 3); for testing, females were removed, injected, then returned to the same tank. Seven of the eight subjects injected with 500 ng PGF2 alpha initiated complete reproductive behavior following injection. Vehicle and handling control subjects did not show any female reproductive behaviors. Prostaglandin-induced increases in sexual behaviors were seen from 15 to 75 min after the injection and were maximal approximately 45 min postinjection. In experiment 2, mature but unspawned (and presumably sexually naive) females were placed for 1 hr with males which were actively nestbuilding and parenting, following which subjects were either injected with PGF2 alpha (N = 6) or given a vehicle injection (N = 6). Experimental females did not behave differently from control females. Neither groups was observed to approach the male or initiate spawning behaviors following treatment; all subjects in both groups spawned on the following day. In experiment 3, sexually mature females were given extended familiarity with the male and the test tank. Pairs which had not spawned after 6 days (unspawned) were randomly assigned to experimental (N = 6) or control (N = 5) groups. Pairs which had spawned 1 day previously (N = 6) formed a "prespawned" comparison group. Females from the experimental and prespawned groups were injected with PGF2 alpha (500 ng), while the control females received a vehicle injection. Half of the "prespawned" females performed spawning acts while none of the unspawned or control females did so. Detailed behavioral analyses showed little or no effect of PG treatment, despite greater familiarity with the male. In experiment 4, females were placed with males and observed until the early signs of spawning, at which time they were injected with indomethacin (a PG synthesis inhibitor) or vehicle. The behavior of females treated with 35 micrograms (N = 3) or 70 micrograms (N = 6) of indomethacin was unaffected by indomethacin and largely indistinguishable from controls (N = 6). In summary, exogenous prostaglandins reinstate sexual behavior in female paradise fish. However, responsiveness to prostaglandins is influenced by prior sexual experience.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3856556 TI - Demand is huge for inpatient eating disorders programs. PMID- 3856557 TI - First trimester prenatal diagnosis of adrenoleukodystrophy by determination of very long chain fatty acid levels and by linkage analysis to a DNA probe. AB - A first trimester prenatal diagnosis of adrenoleukodystrophy has been done on chorionic villi biopsy in the pregnancy of a carrier woman. Two different approaches allowed one to determine that the male fetus was affected: the linkage analysis of DNA from chorionic villi using the highly polymorphic probe St 14 and the determination of very long chain fatty acid levels in cultured chorionic villi. PMID- 3856558 TI - Structural correlations of phorbol-ester-induced stimulation of PGE2 production by human rheumatoid synovial cells. AB - Eight phorbol esters were studied for their ability to stimulate prostaglandin production in human rheumatoid synovial cells over the dose range 0.1 ng to 1.0 micrograms. These derivatives were based upon phorbol, 4-deoxyphorbol, and 12 deoxyphorbol nuclei. This activity was structurally dependent and, although it did not correlate with the actions of the same compounds to induce erythema in vivo, it did correlate with their ability to stimulate human lymphocyte mitogenesis. Stimulation of PGE2 production by a phorbol and a 12-deoxyphorbol analog was inhibited in this system by both indomethacin and dexamethasone. PMID- 3856559 TI - [Preprosthetic periodontal plastic surgery permitting the choice of a new occlusal plane]. PMID- 3856560 TI - [New experimental dental materials for real-time televised radiographic examination]. PMID- 3856561 TI - [Dosimetric data related to dental radiologic practices]. PMID- 3856562 TI - Activity of imipenem in an in-vitro model simulating pharmacokinetic parameters in human blood. AB - The behaviour of Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa was studied in human blood, when exposed to imipenem concentrations rising from zero to a maximum of 6.5 mg/l in 1.9 h, and gradually decreasing to below detection level of less than 0.22 mg/l at 12 h. Under these conditions there was a marked bactericidal activity and a long-acting effect of imipenem. PMID- 3856563 TI - Mezlocillin, ceftizoxime, and amikacin alone and in combination against six Enterobacteriaceae in a neutropenic site in rabbits. AB - Closed-space, locally neutropaenic infection sites were simulated in rabbits by implanting subcutaneous semipermeable chambers inoculated with 5 X 10(4) cfu/ml of Escherichia coli (one strain), Citrobacter diversus (one strain), Klebsiella pneumoniae (two strains) or Serratia marcescens (two strains). Four hours after inoculation, treatment was begun with amikacin (15 mg/kg), mezlocillin (100 mg/kg), or ceftizoxime (50 mg/kg) alone or in two-drug combinations. Antibiotics were given intramuscularly every 6 h for 16 doses. Chambers were sampled for bacterial counts at the start of therapy, and 20, 44, and 92 h thereafter. Blood and chamber antibiotic levels were determined during the treatment course. In vivo results were compared to in-vitro tests of inhibition, killing and synergism. Ceftizoxime alone was successful in vivo (greater than 6 log reduction in count) against the three strains of klebsiella and citrobacter, mezlocillin against one serratia strain, and amikacin alone against none of the strains. The best in-vitro correlation was with the minimum inhibitory concentration (MIC) at a high (10(8] inoculum for the beta-lactams and with the anaerobic MIC for amikacin. Among combinations, amikacin plus mezlocillin alone was successful against the three strains of klebsiella and serratia, but neither amikacin nor mezlocillin added to ceftizoxime were more successful than ceftizoxime alone. In vitro chequerboard synergism was not predictive of in-vivo success. Mezlocillin alone was inactivated in vivo by all the strains except Ser. marcescens, and the E. coli strain inactivated both mezlocillin and ceftizoxime alone and in combination. PMID- 3856564 TI - Simultaneous simulation of two different concentration time curves in vitro. AB - A model for in-vitro simultaneous simulation of two different patterns of pharmacokinetic parameters was developed. In the first compartment the initial concentration simulates that seen after intravenous infusion or bolus injection and the antibiotic is diluted at a constant rate. In the second compartment the concentration rises from zero to a maximum of 1/4 the maximum of the first concentration. From this second compartment the drug is diluted at a slower rate. PMID- 3856565 TI - Depression and suicidality in eating disorders. AB - The first 95 patients admitted to an inpatient Eating Disorders Program and diagnosed as having bulimia (binge eating only), bulimarexia (binging and purging), and anorexia nervosa (food restriction only) were evaluated for depression, suicidality, and family history. Major depression was found in 80% of patients; 20% had made suicide attempts in their life; and 40% of those attempting suicide made potentially lethal attempts. Patients with anorexia and bulimarexia tended to be younger, single, and Protestant. Patients with bulimarexia had overeating, oversleeping, more preoccupation with suicide, and more depression in their mothers. Patients with anorexia had more relatives with anorexia and bulimarexia, and patients with bulimia had more relatives with obesity. These findings suggest that eating disorders are unique disorders and not variants of affective disorder or alcoholism. PMID- 3856566 TI - Inhibition of iron-molybdenum cofactor binding to component I of nitrogenase. AB - Tetrathiomolybdate inhibits iron-molybdenum cofactor (FeMo cofactor) binding to component I of nitrogenase. Molybdenum-iron cluster (a subcomponent of FeMo cofactor) and tetrathiomolybdate inhibited FeMo cofactor activation of inactive nitrogenase component I in extracts of Azotobacter vinelandii and Klebsiella pneumoniae mutant strains defective in the biosynthesis of FeMo cofactor. Addition of tetrathiotungstate, the tungsten analog of tetrathiomolybdate, to the mutant extracts had no significant inhibitory effect on subsequent activation by FeMo cofactor. PMID- 3856567 TI - Energy cost during gait in osteosarcoma patients after resection and knee replacement and after above-the-knee amputation. AB - We determined the energy cost during gait by measuring the oxygen consumption of twenty-six patients after treatment for osteosarcoma about the knee. Fourteen had had an en bloc resection of the distal end of the femur and proximal end of the tibia followed by segmental replacement with a custom-made knee prosthesis and twelve had had an above-the-knee amputation followed by fitting with an artificial limb. Comparisons of free-walking velocity, oxygen consumption per meter traveled, and per cent of maximum aerobic capacity used during walking demonstrated that patients with resection and prosthetic knee replacement had a lower energy cost during gait. PMID- 3856568 TI - Changes in self-renewal potential of human leukemic cells (K562): a bidirectional stochastic process. AB - Daughter cells arising from a single cell division in the leukemic cell line K562 have equivalent self-renewal potential with respect to their ability to form clones in semisolid medium. However, individual cells isolated from these clones in sequence have vastly different abilities in their self-renewal potentials. Thus, cells originating from a clone with any particular self-renewal potential exhibit the full range of self-renewal potentials--from highly renewing to none renewing, cells. These results show that self-renewal potential in the K562 cell line is a random, reversible and partially noninherited characteristic. It is suggested that the stochastic variability of the intraclonal self-renewal potential of K562 progeny cells either reflects the initial expression of a differentiation program or the expression of the predeterministic portion of the normal myelopoietic differentiation pathway. PMID- 3856569 TI - Protein synthesis in differentiating normal and leukemic erythroid cells. AB - Erythroleukemic cells transformed by the AEV or S13 strains of avian erythroblastosis virus differentiate in vitro either spontaneously (S13) or following a temperature induction (temperature-sensitive mutants of AEV). To study differentiation in these cells at the molecular level, homogeneous fractions of maturing cells at discrete stages of differentiation were prepared by Percoll density-gradient centrifugation. This method was also used for the fractionation of differentiating normal erythroid cells separated from total bone marrow by an immunological "panning" technique. Total protein synthesis in these cells was then analyzed by two-dimensional gel electrophoresis. The expression of several proteins was altered in differentiating leukemic cells but not in their normal counterparts. However, in general, the normal and leukemic cells from comparable stages of maturity showed closely related protein synthetic patterns. Similar early and late changes in the synthesis of a number of polypeptides were detected during maturation from early erythroid precursors to terminally differentiated erythrocytes. Further, the leukemic as well as the normal cells appeared to undergo a major switch in total protein synthetic pattern during late differentiation. These results demonstrate that normal and erythroleukemic cells differentiate along similar pathways. PMID- 3856570 TI - Proposed quality control and interpretive criteria for disk diffusion susceptibility testing with enoxacin. AB - The standardized disk diffusion test, in which a 10-micrograms enoxacin disk is used, was performed and microbroth dilution MICs were determined to establish individual test control values with Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, Staphylococcus aureus ATCC 25923, and S. aureus ATCC 29213. In addition, regression analysis correlating inhibitory zone diameter with MICs for approximately 400 gram-negative clinical isolates was performed. Based on linear regression and error rate-bounded analyses, criteria for the category calls of isolates are proposed. PMID- 3856572 TI - Long-term marrow culture of cells from patients with acute myelogenous leukemia. Selection in favor of normal phenotypes in some but not all cases. AB - Long-term cultures were initiated with leukemic marrow aspirate cells from each of 13 newly diagnosed acute myelogenous leukemia (AML) patients. Initial assessment of the clonogenic potential of the marrow suggested that normal hemopoietic progenitors were reduced in most cases and progenitors of abnormal colonies and clusters were present in 10 cases. Subsequent assays of both nonadherent and adherent fractions of long-term cultures revealed two patterns of progenitor cell behavior. The most common pattern (nine cases) featured the detection after 1-4 wk of near normal numbers of typical erythroid, granulopoietic, and mixed colony-forming progenitor cells. Progenitors of abnormal (blast) colonies and clusters initially demonstrable in eight of these nine cases were, in these cases, not sustained in long-term culture and could not be found after 4 wk. Conversion to cytogenetic normalcy in long-term culture was confirmed in two experiments in this group. The second pattern (four cases) was characterized by the failure of progenitors capable of normal differentiation to become detectable in long-term cultures, and the concomitant maintenance of blast progenitors in the two cases in this group where such cells were initially demonstrable. Although progenitors capable of producing abnormal (blast) colonies or clusters in methylcellulose were not detected in either of the other two experiments, the maintenance for 6 wk of a hypercellular nonadherent blast population in one of these suggested the persisting activity of an "adherent layer-dependent" leukemic progenitor cell. Taken together, these findings indicate a strong correlation between the presence of leukemic blasts and their progenitors and a decreased level of normal hemopoiesis. In addition, the failure of leukemic cells to be maintained in long-term marrow cultures from some (but not all) AML patients suggests new applications of this methodology for studies of early stages of leukemic cell development. PMID- 3856571 TI - Effects of postprandial lipemia on plasma cholesterol metabolism. AB - Cholesterol net transport, esterification, and cholesteryl ester transfer have been determined in plasma during fasting, and postprandially, after a high fat cholesterol meal. Significant rises in plasma triglyceride, phospholipid, and free cholesterol were associated with increases in cholesterol net transport, esterification, and transfer (all P less than 0.005), which were well correlated in individual subjects (r greater than 0.60). Essentially, the whole of free cholesterol required for such increased esterification was derived from cell membranes, when cultured fibroblasts were present, despite the increased level of free cholesterol in postprandial plasma; most of the additional cholesteryl ester generated was transferred to the low and very low density lipoproteins (LDL and VLDL) of plasma. Postprandial LDL (the major carrier of free and ester cholesterol and phospholipids among the acceptor lipoproteins) contained significantly decreased ratios of free cholesterol to phospholipid (P less than 0.001), which may modulate the increased transfer of cholesteryl ester to VLDL and LDL. These data suggest that the presence of postprandial acceptor lipoproteins in plasma may play an important role in stimulating the "reverse" transport of cholesterol from peripheral cells for hepatic degradation, which is effective even after the ingestion of dietary cholesterol. PMID- 3856573 TI - A pilot comparison of purging and non-purging bulimics. AB - This study compared (1) purging bulimics (those who terminate binging with self induced vomiting and/or excessive use of laxatives), N = 26; (2) non-purging bulimics, N = 24; and (3) control subjects (in whom no eating problems were apparent), N = 24. These groups were examined empirically on several personality and demographic variables. Additionally, procedures were taken to control for the effects that being overweight may have had on the personality characteristics, which surprisingly has not been undertaken in previous research on bulimia. The comparison of the bulimics (purging and non-purging bulimics grouped together) with the controls empirically confirmed former clinical observations that have linked bulimics with low self-esteem, high anxiety, external locus of control, and a high incidence of maternal and family obesity. With regard to the comparison between the purging and non-purging bulimics, no significant differences between them appeared on any of the dimensions examined here. PMID- 3856574 TI - Effect of non-surgical periodontal therapy (IV). Operator variability. AB - Healing following non-surgical periodontal therapy was studied and the results of instrumentation performed by 6 operators compared. Incisors, cuspids and premolars with periodontal pockets up to 11 mm deep in 20 patients were treated by plaque control and a single episode of supra- and subgingival debridement. A split-mouth approach was used to compare the participating therapists. The effects of the therapy were monitored using changes in plaque score, bleeding score, probing pocket depth and probing attachment level. Marked improvement, similar to that seen in previous studies evaluating non-surgical therapy was noted during the initial 6-9 months. No further changes of the recorded parameters could be observed during the rest of the 24-month observation period. Differences between sites treated by the various operators were negligible. Thus, it appears, that deep periodontal pockets in incisors, cuspids and premolars may be successfully treated by plaque control and 1 episode of instrumentation and that operator variability may be limited. PMID- 3856575 TI - Susceptibility of human oral anaerobic bacteria to antibiotics suitable for topical use. AB - 17 antibiotics, with potential for topical use, were tested for their activity against the human oral flora. Concentrations (mumol/l) required to inhibit 90% of test strains are presented and drug activities are compared. The total cultivable oral flora was susceptible to the tetracyclines including tetracycline itself, minocycline, doxycycline, and oxytetracycline and to erythromycin. On the other hand, actinobolin, kanamycin, neomycin, streptomycin, spiramycin, tyrothricin, vancomycin, clindamycin, and chloramphenicol were ineffective against many of the human oral anaerobic bacteria even at high concentration. Penicillin was effective at high concentrations but could not be recommended because organisms which are not inhibited by low concentrations are penicillinase producers. Carbenicillin was effective against all organisms except Actinobacillus actinomycetemcomitans. The gram-negative organisms involved in adult periodontitis were most susceptible to the tetracyclines, tyrothricin, carbenicillin and clindamycin, while those associated with localized juvenile periodontitis were susceptible to the tetracyclines or erythromycin. These data, combined with the previous findings that some tetracyclines exhibit marked substantivity and collagenase inhibition activity, indicate that tetracycline or minocycline are likely to be good choices in the treatment or prevention of oral diseases. PMID- 3856576 TI - Sampling of subgingival microbiota for dark-field microscopy. AB - The aim of the present investigation was to study the validity of 2 different methods of sampling the subgingival microbiota. The composition of the flora was estimated using the dark-field microscope. Subgingival samples were obtained using either a curette or a Hamilton microsyringe for a subgingival washing. The method of determination of the composition of the subgingival microorganisms was found to be very reproducible when the same investigator performed the counting. Samples obtained by the washing technique had a slight but significantly higher proportion of coccoid cells when compared to samples obtained by curette. The calculation of the reproducibility of the washing technique as assessed in 6 immediately repeated samples from the same sites yielded a coefficient of variation of 40% for spirochetes and motile rods. When 9 repeated samples from each of 28 sites (14 with a curette, 14 with washing) were studied over a period of 32 days, no systemic alterations were observed in the % of spirochetes and motile rods. The variation within each individual site was high. For curette samples and washing samples, the coefficients of variation for spirochetes and motile rods were 85% and 63%, respectively. The present investigation clearly demonstrated that care should be taken in the interpretation of single samples of subgingival microbiota. A more relevant picture of the actual situation is achieved when trends of repeated samples over time are studied. PMID- 3856577 TI - Intraclass correlations of periodontal measurements. AB - Components of variance and intraclass correlation coefficients were computed for changes in attachment level, pocket depth, gingival and plaque index scores for 5 groups of treated periodontal disease patients and 1 group of untreated subjects with periodontal disease. The intraclass correlation coefficients for attachment level change ranged from 0.011 to 0.165 (median 0.067), while intraclass correlation coefficients for pocket depth changes ranged from -0.009 to 0.178 (median 0.071). These intraclass correlation coefficients were much lower than those computed for changes in measurements of plaque which ranged from 0.086 to 0.568 (median 0.268) or gingival inflammation which ranged from 0.119 to 0.522 (median 0.264). Intraclass correlation coefficients at baseline for pocket depths ranged from 0.000 to 0.199 (median 0.053), for plaque accumulation from 0.121 to 0.531 (median 0.222) and for gingival inflammation from 0.229 to 0.596 (median 0.391). The differences in the intraclass correlation coefficients between pocket depth and attachment level on the one hand and plaque accumulation or gingival inflammation on the other could not be explained on the basis of differences in the measurement scale employed, since collapsing measurement scales had little effect on the intraclass correlation coefficients. The observed larger intraclass correlation coefficients for changes in plaque and gingival indices suggest a larger role for host contribution to these measurements. In contrast, the data suggest that the major but by no means the sole factor determining the variability of attachment level or pocket depth changes is the nature of the local factors. PMID- 3856578 TI - 3-year longitudinal study of the periodontal status of an adult population with gingivitis. AB - 69 adults ranging in age from 20 to 73 (mean age: 37) were randomly assigned to a control (C) and a test (T) group. Of these, 61 completed the 3-year longitudinal study. All subjects had varying degrees of gingivitis at the start, but no overt periodontitis. Following a base line examination for P1I, GI, probing depth (PD) and recession, a differential darkfield microscopic (DDFM) count of subgingival bacterial morphotypes was carried out on a pooled sample originating from one tooth surface in each sextant with the greatest probing depth. Examinations were repeated every 6 months for 3 years. The C group received regular prophylaxes every 6 months. The T subjects received prophylaxes according to a previously described schedule, and on the basis of the DDFM test outcome. Recall intervals at the end of the study for the T group ranged from 1 to 24 months (mean: 15.7 months). Of 30 subjects in the T group at the end of the study, one half had not had their teeth cleaned for periods of 18 to 36 months without any detectable deterioration in their periodontal status by comparison with the other T subjects or the patients in the C group. Both C and T subjects exhibited increased mean P1I and GI scores as compared to base line during the first half of the study. However, mean PD measurements remained unchanged. Increases in PD from base line of 3 mm or more were observed only in approximately 1 out of a 1000 individual tooth surface comparisons, a frequency comparable to that expected to occur by chance alone. This observation indicates that in this population, little if any pocket formation occurred during the study period. GI score increases of 2 units or more occurred in relatively few subjects. 2 of 31 C patients accounted for 42% of the affected dental units, while 5 out of 30 T subjects accounted for 40.8% of the affected dental units in that group. These observations suggest that despite the relatively high prevalence and incidence of gingivitis, the subjects were relatively resistant to periodontitis. Neither preventive schedule was effective in eliminating gingivitis. The lack of significant destructive disease in this population prevented any meaningful comparison of the relative effectiveness of the two preventive maintenance regimens in preventing recurrences of periodontitis. PMID- 3856579 TI - Effect of periodic tooth displacement on healing of experimental furcation defects in dogs. AB - This study compared the healing response, following reconstructive surgery, between teeth subjected to periodic displacement and teeth which were splinted during the postoperative healing period. Through-and-through furcation defects were created in the mandibular second, third, and fourth premolars of 6 beagle dogs. Bone was surgically removed from the furcation and around each root to 3 different levels: 3, 6, and 9 mm. Reconstructive surgery included demineralization of the root surface and coronally positioned flaps. During the postoperative healing period, the premolars on one side were subjected to periodic mesio-distal displacement by orthodontic elastics attached to splints. Corresponding teeth on the contralateral side were splinted to serve as non mobile controls. The results demonstrated that reattachment occurred in 12 of 14 displaced teeth and in 14 of 16 splinted teeth. There was no difference in the amount of interradicular bone fill or frequency of ankylosis between displaced and splinted teeth. Our findings indicate that the healing response was not affected by tooth displacement in this dog furcation model. PMID- 3856580 TI - Investigation of the relationship between clinically detected loss of attachment and radiographic changes in early periodontal disease. AB - A total of 383 students, ages 12-16, were examined clinically to determine periodontal attachment loss by a trained examiner, utilizing standard techniques. 70 of these were selected, for whom bitewing radiographs were available for assessment of early alveolar bone loss by 2 radiologists and a general dentist, utilizing 4 criteria. The results indicate poor agreement between clinical and radiographic diagnoses by the 3 examiners. Variations were also found in the diagnosis of pathologic sites utilizing radiographs. The data indicate that bitewing dental radiographs were a poor screening or diagnostic procedure for the assessment of early periodontal disease in adolescents. PMID- 3856581 TI - Human histocompatibility antigen associations in patients with chronic cutaneous lupus erythematosus. AB - Increased frequency of certain human leukocyte antigens (HLA) has been reported in various subsets of patients with lupus erythematosus (LE). Specifically, HLA B8 and HLA-DR3 have been associated with subacute cutaneous LE; HLA-DR3 or HLA DR2 is found in mothers of infants with neonatal LE; and HLA-A1, HLA-B8, HLA-B15, and HLA-DR2 occur in patients with systemic LE. We typed twenty-two white and nineteen black patients with chronic cutaneous (discoid) LE (DLE) for the A, B, and DR loci of the HLA antigens. HLA-DRw6 was found in an increased proportion of our patients of both races compared with controls. HLA-B8 was found more frequently in white DLE patients than in white control subjects. Thus a genetic predisposition may be a factor that explains the variation in disease expression. PMID- 3856582 TI - Comparison of two group treatments for bulimia. PMID- 3856584 TI - Creative ferment. PMID- 3856583 TI - Fluoride therapies. PMID- 3856585 TI - A survey of 200 pediatric dental general anesthesia cases. AB - In this article, the authors analyze 200 patients who were hospitalized because of extensive dental caries, management problems, or because they were medically compromised. PMID- 3856586 TI - Noses, tongues, and teeth. AB - There is a renewed interest in the relationship between breathing patterns, tongue positions, and orthodontic management of patients with malocclusion. The authors address the effects of these factors on arch-form and occlusal contacts. PMID- 3856587 TI - Multiple localized root agenesis. AB - The cause of this condition is undetermined. Cessation of root development is associated with a variety of systemic, congenital or genetic disorders. External trauma, such as radiation and electrical burns, can arrest development. PMID- 3856588 TI - Impacted maxillary second permanent molars. AB - The study population consisted of fifteen children in whom twenty-one maxillary second molars were impacted by the third molars. The subjects ranged in age from nine to eighteen years. The impactions apparently were caused by the malposition of the buds of the third molars. PMID- 3856589 TI - Bilateral malposition of maxillary second premolars: report of case. AB - A case of bilateral malposition of maxillary second premolars is reported. Different approaches for management are considered. The possible causes of the rare abnormality are discussed. PMID- 3856590 TI - Management of ectopically erupting first permanent molars. AB - A simple method of treating these teeth is described. The authors describe the use of orthodontic brackets, .017 twist wire, and compressed open coil springs. Correction is accomplished in six to eight weeks with minimal adjustments required. PMID- 3856591 TI - Incidence of enamel hypoplasia in primary canines. AB - In the study population for this report, 22 percent of all primary canines examined (in fifty-five children) had a hypoplastic area. Approximately 45 percent of the patients had at least one tooth so involved. PMID- 3856592 TI - Nisentil-induced respiratory arrest: report of case. AB - The case reported is typical of narcotic overdose. The sequence of events, however, is predictable when narcotics are administered in excess. Effective monitoring and the use of emergency equipment can prevent a fatality. PMID- 3856593 TI - Congenital micrognathia and microglossia: an experimental approach to treatment. AB - An experimental approach to treatment, using a modified Schwartz appliance, is described. The patient died from unrelated causes, but sufficient progress was made to warrant further clinical evaluation of the treatment method. PMID- 3856594 TI - A status report on diet, nutrition and cancer. AB - Current data imply that a compilation of the nutrient effects strongly suggests that a diet enriched in plant products reduces cancer risk. The recommendation to increase the consumption of plant products is in accord with similar recommendations on diet and other chronic diseases, such as cardiovascular disease and diabetes. PMID- 3856595 TI - Stress and nutrition. AB - Physical stresses of illness and injury result in clear increases in caloric and protein needs and perhaps vitamin and mineral requirements that remain elevated until the repair process is complete. Extremes in temperature have less effect on nutrient needs. Greater nutrient needs with emotional stresses have not been clearly documented, although changes in eating behaviors have been noted. Malnutrition, either pre-existing or developing as a result of the stress, is in itself a stress to the body. Thus, malnutrition may interfere with the process of adaptation to stress and impair the recovery process. PMID- 3856596 TI - The use of live patients in clinical board examinations: the debate. PMID- 3856597 TI - Three models of professionalism and professional obligation in dentistry. PMID- 3856598 TI - Tenomyositis of the masseter muscle: report of cases. AB - Inflammation occurring at the attachment of the masseter muscle to the zygomatic arch--tenomyositis--must be distinguished from the more common disorders occurring in the rest of the muscle. Anti-inflammatory treatment has been effective in the treatment of tenomyositis. The cases presented illustrate the effectiveness of this type of treatment. PMID- 3856599 TI - Paresthesia of the mental nerve after overextension with AH26 and gutta-percha: report of case. AB - Overfilling of a root canal with AH26 and gutta-percha resulted in paresthesia of the mental nerve. After 14 weeks, nerve function was restored. PMID- 3856600 TI - Diagnosis and treatment of acute fluoride toxicity. AB - The literature has shown overwhelmingly that fluoride used for dental prophylaxis presents minimal risks if used appropriately. However, there is an increasing potential for ingestion of toxic doses of fluoride because of the increasing use of pleasant-tasting fluoride products. The ADA has recommended that no more than 120 mg fluoride (264 mg NaF) be dispensed at any one time. As with any medication, fluoride preparations should be prescribed in child-resistant containers, and patients or parents (or both) should be instructed as to the proper daily treatment regimens and the potential for toxic overdoses. Possibly the greatest risk of fluoride intoxication relates to the concentrated fluoride preparations used for professionally applied fluoride treatment (Table 3). Therefore, patients receiving professional topical fluoride treatments should have well-fitting trays with the minimal amount of fluoride necessary to contact the teeth. These patients should be provided with a saliva ejection system, and they should never be left unobserved during the topical application. Health professionals should be aware of the potential toxic effects of fluoride in addition to the well-known caries preventive effects. It is necessary to know how to calculate the amount of fluoride ingested and the emergency treatment recommended to prevent toxic effects in suspected overdose cases. PMID- 3856601 TI - Effect of finishing on color and gloss of composites with different fillers. PMID- 3856602 TI - A review of nonintrusive therapies used to deal with anxiety and pain in the dental office. PMID- 3856603 TI - Painful, mixed density mass of the right maxilla. AB - An additional case of rare, benign osteoblastoma occurring in the right maxilla of a 27-year-old female is reported. The differential diagnosis is discussed and the important distinction between osteoblastoma and low-grade osteosarcoma is stressed. PMID- 3856604 TI - Dental supplies and equipment price indexes: update to 1984. Bureau of Economic and Behavioral Research. PMID- 3856605 TI - Hospital dental statistics: an update. Council on Hospital and Institutional Dental Services. PMID- 3856606 TI - Human subjects in dental research: coping with the regulations. Council on Dental Research. AB - The rules and regulations pertaining to human subjects in research have evolved in response to ethical concerns for the protection of the rights and welfare of such subjects. However, investigators quite often are not well informed on what is required of them in the conduct of their clinical studies. Failure to be provided with sufficient information may be part of the problem, but the nature of such rules and regulations and their diversity and complexity certainly are sources of confusion. This article presents an overview of some of the major components and processes involved in the implementation of the federal regulations. It is hoped that this presentation will lead to a better understanding of the roles of the investigator, the institutional review boards, and the institutional and the federal agencies involved in the protection of human research subjects. PMID- 3856607 TI - The fitting of contact lenses in aphakic infants. AB - Infants born with a unilateral congenital cataract have always been considered a particularly difficult group of patients to treat. Our experience in fitting contact lenses to such children, after cataract removal, is described. Contact lenses must be specially designed, to account for the significant differences in size and shape of the infant eye from that of an adult eye. A group of 15 children born with a unilateral cataract, were fit with contact lenses, and have been treated for amblyopia for an average of less than 2 years. Eight patients have obtained acuities measured by preferential looking that are statistically normal for age and equal between eyes. All children are presently still under active amblyopia treatment. This preliminary study shows that infants with a congenital unilateral cataract can be successfully treated. PMID- 3856608 TI - Corneal infiltrates and extended-wear contact lenses. AB - Corneal infiltrates are a relatively rare but potentially serious complication of extended-wear contact lenses. Clinical experience with a large population of extended-wear patients suggested that these infiltrates have a characteristic location and appearance which may aid in diagnosis and management. The records of 51 patients (54 eyes) with extended-wear contact lenses and corneal infiltrates were reviewed. Nearly all the infiltrates were in the peripheral cornea and 67% were located superiorly, beneath the upper lid. No permanent visual loss resulted and all patients resumed extended-wear of contact lenses following a period of appropriate management. The clinical features, management, and possible etiologies are discussed. The sample reported herein is the largest, to date, of any reported in the ophthalmic literature. PMID- 3856609 TI - A hard lens with extended wear possibilities. AB - The variety of parameters affecting extended wear lenses makes it obvious that the ability to use a lens under an eye closed in sleep is by no means solely contingent upon the oxygen transmission characteristics of the material. This study shows that a new silicone acrylate lens apparently permits sufficient tear flow to maintain a viable cornea while the lens is worn overnight. In this preliminary report, over eighty percent of the previously successful hard lens patients fitted with lenses made of this material were able to maintain contact lens wear on an extended basis. PMID- 3856611 TI - Self assessment on contact lenses. PMID- 3856610 TI - Softcon: an extended wear study. AB - Forty-eight subjects were fitted with a new design Softcon lens to determine the acceptability of the lens for extended wear. The subjects were monitored for periods of up to two years of extended wear. Periodic measurements or observations were made of visual acuity, keratometry, biomicroscopy, and refraction. The results showed that there was a high degree of acceptability of the lens, with less than three percent of the subjects manifesting significant changes in measurements or observations. PMID- 3856612 TI - Epithelial heterogeneity in the murine thymus: fucose-specific lectins bind medullary epithelial cells. AB - By means of histochemical techniques, two lectins with nominal specificity for L fucose, Tetragonolobus purpureas agglutinin (TPA), and Ulex europeus agglutinin (UEA) were found to specifically label the medullary area of murine thymuses. Although the binding of both lectins was restricted to the medullary area of the thymus, each staining pattern was unique. Cells binding UEA formed a reticular network throughout the medulla, whereas cells binding TPA occurred as single cells or small clumps of cells and resembled Hassall's corpuscles. The cells binding either lectin were identified as epithelial on the basis of ultrastructural features (tonofilaments, desmosomes, and keratohyalin bodies) and resembled Ia+ medullary epithelial cells described previously. An age-related decline in UEA binding was observed, whereas labeling with TPA remained unchanged. On the basis of the labeling patterns obtained with UEA and TPA and the reported specificities of these two lectins, it is suggested that the majority of the fucose detected is associated with type 1 carbohydrate chains. PMID- 3856613 TI - Immunochemical and genetic studies of Amb.t. V (Ra5G), an Ra5 homologue from giant ragweed pollen. AB - Giant ragweed pollen allergen Amb.t. V (Ra5G), a homologue of short ragweed pollen Amb.a. V (Ra5S), was isolated in ultrapure form from a 16-min extract of ragweed pollen by a combination of molecular sieving through an Amicon hollow fiber cartridge (H1P5), cation-exchange chromatography, and gel filtration. The size was found to be 4400 daltons (D) by amino acid analysis and 6000 D by SDS PAGE, and the pI was 8.3 as determined by isoelectric focusing. There was no cross-reactivity detected between the two Amb. V antigens by immunodiffusion and IEP with the use of hyperimmune antisera raised against crude or highly purified antigens. Cross-reactivity between the two Amb. V antigens was further investigated by inhibition double antibody radioimmunoassay by using the sera of nine selected ragweed-allergic patients who had recently been immunized with either mixed short-giant ragweed pollen extract or with short ragweed extract alone and who had IgG antibodies (Ab) to Amb.t. V and generally to Amb.a. V. Unlabeled Amb.t. V did not inhibit the binding of 125I-Amb.a. V to the IgG Ab in any of the sera tested. Conversely, unlabeled Amb.a. V produced some inhibition of the binding of 125I-Amb.t. V to the patients' IgG Ab, primarily in those patients who had received immunotherapy with short ragweed alone. This weak cross reactivity was probably a result of the primary structural homology between the two protein allergens. The sera from two groups of ragweed-allergic individuals were investigated for the presence of IgG and IgE Ab to Amb.t. V. The presence of IgG Ab was found to be associated both with previous (or current) immunotherapy with giant ragweed extract and with HLA-Dw2. The HLA association is of interest in view of the previously established association between Dw2 and response toward the homologue Amb.a. V. The result suggests the existence of a similar genetic control at the primary level of antigenic recognition of the two Amb. V antigens. PMID- 3856614 TI - Kinetics of Ii synthesis, processing, and turnover in n-butyrate-treated Burkitt's lymphoma cell lines which express or do not express class II antigens and in hairy leukemic cells. AB - We have sought to understand the role of the electrophoretically invariant chain (Ii) in class II antigen functions, particularly in certain transformed cells in which we have previously demonstrated hyperexpression of Ii. Molecular structures and relative kinetics of Ii synthesis, processing and turnover were compared in paired, Ia+ and Ia- Burkitt's lymphoma (BL) cell lines and in hairy cell leukemia (HCL) cells. Cells were metabolically labeled with [35S] methionine for 15 min (with or without a cold methionine chase to 3 hr) or were continuously labeled for 3 hr. One- and two-dimensional gel electrophoresis resolved immunoprecipitates formed with a) a heteroantiserum to purified class II antigen (demonstrating alpha and beta chains and Ii associated with that complex), b) a heteroantiserum to hairy cell leukemia (HCL) membranes (demonstrating principally the dominant, basic form of Ii molecules, class I antigens, and some additional proteins), and c) a monoclonal antibody to human Ii. Treatment of Ia+ Jijoye and its daughter, Ia- P3HR-1, BL cells with 4 mM butyrate for 48 hr enhanced the synthesis of the dominant, basic form of Ii but did not affect apparent turnover rates of that pool of Ii chains in either cell line. In Ia+ Jijoye cells but not in Ia- P3HR-1 cells Ii was terminally processed to more acidic, sialic acid derivatized forms. Butyrate treatment did not alter the relative turnover rate of terminally processed Ii in Jijoye cells. The level of the dominant, basic form of Ii in HCL cells equaled that in butyrate-treated Jijoye cells, and relative turnover rates of this terminally unprocessed Ii pool were similar in HCL and Jijoye cells. However, HCL Ia-associated Ii was not terminally processed, as was Ia-associated Ii in Jijoye cells. The expression of Ia auxiliary proteins, p41 and p25, was also enhanced in Jijoye cells by butyrate treatment and was prominent in HCL cells. From these experiments, we may hypothesize the following. In lymphoblastoid cells, two pathways for Ii turnover could exist. One is through association with Ia complexes and progressive terminal processing of carbohydrate side chains and a second is not associated with Ia or, apparently, with such processing. Because Ii is not found to be terminally processed in the absence of class II antigen, Ia might be considered to direct the processing of a subset of Ii towards some function (rather than vice versa).(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3856615 TI - The effect of local antibody responses on in vivo and in vitro phagocytosis by pulmonary alveolar macrophages. AB - This study used both in vitro and in vivo techniques to determine if local antigen deposition in the lung has a localized effect on immune phagocytosis by pulmonary alveolar macrophages (PAM). Using a fiberoptic bronchoscope, dogs were immunized in the left cardiac and left diaphragmatic lobes with sheep red blood cells (sRBC). The right cardiac and right diaphragmatic lobes of the same animals received saline as controls. Unimmunized dogs served as additional controls. On days 2, 6, 9, 13, and 16 after immunization, the left and right diaphragmatic lobes were lavaged, and the cells and fluids were analyzed in vitro. Opsonizing antibody in lavage fluids was first detectable at 6 days, peaked at 9-13 days, and was significantly higher in the immunized lobe than in the control lobe. Phagocytosis of sRBC caused by cytophilic antibody on PAM also peaked at 9 to 13 days. Significantly more cytophilic antibody activity was detected on day 9 in the immunized lobes, than in the control lobes. In vivo phagocytosis of sRBC was evaluated in the alveoli of immunized and control lobes of immunized dogs and a control lobe of unimmunized dogs. Phagocytosis of sRBC by PAM in the immunized lobes was about four times greater than that of the control lobes and about 40 times greater than that of a control lobe of an unimmunized dog. These results indicate that the local deposition of a particulate antigen in the lung had a localized effect on immune phagocytosis. These data suggest that the accumulation of antibody-secreting cells in the alveolus may play a critical role in pulmonary defense mechanisms. PMID- 3856616 TI - Proliferation, kinetics, and fate of monocytes in rat liver during a zymosan induced inflammation. AB - The fate and kinetics of monocytes, recruited to the liver by a single zymosan injection, were investigated by light (LM) and electron (EM) microscopy combined with peroxidase cytochemistry and latex phagocytosis. Ultrastructural and cytochemical differences between these cells and resident Kupffer cells persisted during a 7-day period, demonstrating the existence of two types of hepatic mononuclear phagocytes. Both cell types exhibited a pronounced mitotic activity during their numerical increase. Next to peroxidase-positive (POP) Kupffer cells and monocytes, peroxidase-negative (PON) mononuclear phagocytes were observed. These may represent a monocyte subset and/or possibly Kupffer cell precursors. PMID- 3856617 TI - Natural antitumor defense system of the murine liver. AB - Murine nonparenchymal liver cells from various genetic strains isolated by collagenase digestion and differential sedimentation contain both lymphocytes and macrophages. Nonparenchymal liver cells as well as spleen cells, mononuclear blood cells, and peritoneal exudate cells from C3HeB/FeJ mice were tested for natural cytotoxicity against YAC-1 (sensitive to NK cells) and P815 (resistant to NK cells) tumor cell lines. Resident peritoneal exudate cells exerted no cytotoxicity against either tumor cell, whereas spleen and mononuclear blood cells lysed only YAC-1. In contrast, nonparenchymal liver cells lysed both YAC 1(4 h) and P815 (18 h) tumor cells. Treatment of nonparenchymal liver cells with anti-asialo GM1 and complement abolished the antitumor activity against both tumor cell lines but not the phagocytic activity. Nonadherent nonparenchymal liver cells exerted greater cytotoxicity against YAC-1 tumor cells but little cytotoxicity against P815 tumor cells when compared with unfractionated cells. Adherent nonparenchymal liver cells (macrophages) from untreated mice exerted no antitumor activity against either tumor cell. In contrast, adherent nonparenchymal liver cells from Corynebacerium parvum treated mice were directly cytotoxic to P815 tumor cells. Spleen cells that are normally not cytotoxic to P815 tumor cells (18 h) became cytotoxic when mixed with adherent nonparenchymal liver cells from untreated mice. These results indicate that the tumoricidal effector cell in nonparenchymal liver cells from untreated mice appears to be the NK cell. Apparently, murine liver macrophages from untreated mice do not have tumoricidal activity per se but can "activate" NK cells to kill tumor cells normally resistant to NK cells. PMID- 3856618 TI - Characterization of 3H-uridine incorporation and messenger RNA synthesis in human monocytes activated to secrete alpha interferon or monocyte-derived fibroblast growth factor. AB - Human monocytes are multifaceted cells with a wide range of immunoregulatory functions and distinct secretory products. This manuscript reports on initial attempts to identify specific early macromolecular synthetic events associated with various types of human monocyte activation by observing the patterns of RNA synthesis displayed by human monocytes that are exposed to well characterized activating stimuli. It was found that muramyl dipeptide (MDP), an activator of monocyte-derived fibroblast growth factor (MD-FGF) release from monocytes, also stimulates a reproducible increase in human monocyte total 3H-uridine incorporation and cytoplasmic messenger RNA (mRNA) synthesis at 4 h following activation. In contrast, polyriboinosinic acid:polyribocytidilic acid (poly I:C), an excellent stimulator of monocyte alpha interferon (IFN alpha) release, did not cause a change in either 3H-uridine incorporation or cytoplasmic mRNA production at any of the time points tested. Poly I:C was also found to be a poor stimulator of MD-FGF release. Conversely, MDP did not stimulate any detectable IFN release from human monocytes. The discrepancy between the patterns of macromolecular synthesis observed in human monocytes activated to secrete MD-FGF as compared with IFN indicates that divergent postactivation control mechanisms may be operative at the RNA level in the monocyte following activation of these two distinct functions. PMID- 3856619 TI - Preformed polymethylmethacrylate cranioplasties: report of 45 cases. AB - In 45 patients a preformed polymethylmethacrylate (PMMA) cranioplasty prosthesis was inserted. The cranial defects mainly were caused by trauma, removal of tumour and secondary infection of bone after intracranial operation. Several broken peroperatively cold-cured acrylic plates were replaced by preoperatively molded PMMA plates. The longest follow-up was seven years and the shortest four months; the average was 39 months. The size of the defect ranged from 6 cm2 to 175 cm2. The average age at operation was 33 years; the youngest patient was one year, the oldest 74 years. There were no acute postoperative complications. Two plates had to be removed nearly one year after insertion. Both patients had a long history of chronic bone infection before the PMMA cranioplasty was performed. The technical details will be described; the advantages of the method will be discussed. PMID- 3856620 TI - Computed tomography of the temporomandibular joint meniscus. A report of preliminary tests. AB - CT standard techniques have been used as a diagnostic tool to determine anterior meniscus displacement without reduction. 10 patients were examined to test the value of this technique in the daily routinework of a department of Radiology. The results are encouraging. PMID- 3856621 TI - Perforation of the intra-articular disc diagnosed by arthro-tomography of the temporomandibular joint. AB - Arthrography was first used almost 40 years ago for evaluation of the non-osseous parts of the TMJ. It did not find wide application and only during the last decade have certain authors re-introduced its use as a diagnostic approach in TMJ pathology. Among the other pathological conditions which can be diagnosed, is a perforation of the intra-articular disc. Four such cases are presented and the value of this method is shown. PMID- 3856622 TI - Unilateral condylar hyperplasia combined with synovial chondromatosis of the temporomandibular joint. Report of a case. AB - A case of unilateral condylar hyperplasia combined with synovial chondromatosis of the temporomandibular joint (TMJ) is presented. Clinical and radiographic findings were consistent with an active unilateral hyperplasia. A high condylectomy was performed. During the operation numerous cartilaginous particles discharged from the TMJ and so it became clear that the patient was also suffering from chondromatosis. Both conditions were confirmed by histological examination. PMID- 3856623 TI - Submucous cleft palate. AB - An examination of 9720 Zagreb school children, 6-13 years of age, revealed submucous cleft palate (SMCP) in 5 and cleft uvula in 232. The prevalence of SMCP among Zagreb school children was 0.05% or 1:1944. Two out of 102 relatives of CP patients examined had submucous cleft palate. The findings of five SMCP in children and two in parents of CP patients, undiagnosed before the screening, confirms the difficulties of recognition that complicate the obtaining of correct data about their incidence. PMID- 3856624 TI - Merkel cell carcinoma of the face. Case report and review of the literature. AB - Merkel cell carcinoma of the skin has only recently been described. From the literature 115 cases are analysed. This carcinoma is most probably far more common than would be assumed from the few publications presently available. Between 40 to 50% of tumours are found in the head and neck area. Clinically the tumour presents as a typical bluish red firm intracutaneous nodule with the overlying skin intact, and sometimes malignant melanoma-like intracutaneous satellites. Regional lymph node metastasis is frequent and the five year survival rate, although not yet available, may well be about 50% or less. Clinical diagnosis is of paramount importance, as final diagnosis is only confirmed by electron microscopy and routine light microscopy leaves a wide range of differential diagnoses. In our case all typical characteristics are present. A cervicofacial flap which utilizes the abundant cervical skin for direct closure of the secondary defect in a U-Y manner was used to cover the primary defect. The flap is based on the preauricular area. Advantages and indications for the cervicofacial as opposed to Esser's cheek rotation flap are discussed. PMID- 3856625 TI - The pectoralis major myocutaneous flap for intraoral reconstruction: surgical complications and their treatment. AB - The pectoralis major myocutaneous (PM-MC) flap was used for intra-oral reconstruction in 7 patients. Major necrosis did not occur in any of the cases, but minor necrosis did in two cases. In 2 cases an oro-cutaneous fistula was observed. Furthermore, in 2 cases severe facial oedema was experienced, which seemed attributable to circulatory disturbance in the part of the face where the flap was inserted. Muscle atrophy of the flap was observed in greater or lesser degree in all cases. In all cases the pectoralis major myocutaneous flap was used for the purpose of intraoral reconstruction. Intraoral reconstruction involves considerations different from transplantation in other sites. It is the purpose of this paper to present an updated review of our experience with 7 consecutive pectoralis major myocutaneous flaps, including the complications and their treatment. PMID- 3856627 TI - The induction of myeloid leukaemias by Rauscher murine leukaemia virus. AB - A number of cloned viral preparations isolated from Rauscher virus-producing JLS V5 cells were compared in their competence to induce different types of leukaemias. All preparations were able to induce myeloid leukaemias, but the induction of lymphatic or erythroid leukaemias was also observed. Serial infection of newborn mice with either cell-free extracts or serum from animals suffering from a myeloid leukaemia did not result in the occurrence of relatively more myeloid leukaemias nor did the infection with virus harvested from ascites fluid of permanent myeloid cell lines. It appears that the mechanism by which myeloid leukaemias are induced is not virus-specific. PMID- 3856628 TI - [Neonatal Steinert's disease: apropos of 2 cases in 2 successive generations]. AB - Description of a family who presents two cases of neonatal myotonic dystrophy (Steinert's disease) in two successive generations. The authors summarize the different genetic theories generally advanced; they sum up the antenatal means of diagnostic that is based on the knowledge of linkage of the loci for myotonic dystrophy and Lutheran blood group. PMID- 3856626 TI - Recognition of a leukemia-related antigen by an antiidiotypic antiserum to an anti-gp70 monoclonal antibody. AB - The possibility that receptors for retroviral gp70 share structural elements with the antigen-binding sites of anti-retroviral gp70 antibodies was investigated. A monoclonal antibody (1416) was produced that reacted with the gp70 of a cloned recombinant leukemogenic retrovirus, termed P1. An antiidiotypic antiserum raised to 1416 was tested for its ability to bind to the thymic leukemia induced by P1 (P1 Thy). A membrane structure was identified on the surface of P1 Thy that reacted with the antibody against the idiotypic determinant of 1416. A similar structure was identified on the surface of several different, independently derived murine leukemias of T cell, B cell, and erythroid lineage. The expression of the idiotype-like determinant on these leukemia cells was independent of the serological relatedness of their expressed retroviral envelope glycoproteins to P1 gp70. The determinant recognized by the antiidiotype was not detected on normal lymphoid cells. The recognition by the anti-(anti-gp70) idiotype of determinants on unrelated murine leukemias suggests that receptors for different leukemogenic viruses may share common structures. PMID- 3856629 TI - The effects of citalopram (Lu 10-171) on the serotonin (5-HT) uptake kinetics in platelets from endogenously depressed patients. AB - The uptake kinetics of serotonin (5-HT) in platelets from eight patients with endogenous depression was determined in platelet rich plasma (PRP). From the uptake data the Scatchard correlation coefficient (r[S] ), Sips' index of heterogeneity (alpha), Km and Vmax (Lineweaver-Burk) were calculated. The measurements were performed before and after two weeks treatment with Citalopram, 1-(3-dimethylaminopropyl)-1-(p-fluorophenyl)-5-phtalan carbonitrile (Lu 10-171), a selective 5-HT uptake inhibitor. After two weeks treatment with Citalopram (5, 25 or 50 mg/day) a lowered platelet count in whole blood and PRP was observed and none of the patients had a measurable 5-HT uptake for which kinetic parameters (Km and Vmax, Lineweaver-Burk) could be calculated. However, all the patients but one improved significantly in Global score. PMID- 3856631 TI - Remission induction of meningeal leukemia with high-dose intravenous methotrexate. AB - Twenty children with acute lymphoblastic leukemia who developed meningeal disease were treated with a high-dose intravenous methotrexate regimen that was designed to achieve and maintain CSF methotrexate concentrations of 10(-5) mol/L without the need for concomitant intrathecal dosing. The methotrexate was administered as a loading dose of 6,000 mg/m2 for a period of one hour followed by an infusion of 1,200 mg/m2/h for 23 hours. Leucovorin rescue was initiated 12 hours after the end of the infusion with a loading dose of 200 mg/m2 followed by 12 mg/m2 every three hours for six doses and then every six hours until the plasma methotrexate level decreased to less than 1 X 10(-7) mol/L. The mean steady-state plasma and CSF methotrexate concentrations achieved were 1.1 X 10(-3) mol/L and 3.6 X 10(-5) mol/L, respectively. All 20 patients responded to this regimen, 16/20 (80%) achieved a complete remission, and 20% obtained a partial remission. The most common toxicities encountered were transient serum transaminase and bilirubin elevations, neutropenia, and mucositis. One patient had focal seizures and transient hemiparesis but recovered completely. High-dose intravenous methotrexate is an effective treatment for the induction of remission after meningeal relapse in acute lymphoblastic leukemia. PMID- 3856632 TI - Nursing as a business and the business of nursing. PMID- 3856630 TI - 13-cis-Retinoic acid does not increase the true remission rate and the duration of true remission (induced by cytotoxic chemotherapy) in patients with chronic phase chronic myelogenous leukemia. AB - Treatment of chronic phase chronic myelogenous leukemia with hydroxyurea or busulfan rarely induces cytogenetic (true) remissions. Intensive chemotherapy induces brief true remissions in approximately 50% of patients. We added 13-cis retinoic acid to daunorubicin, cytosine arabinoside, and thioguanine to determine if it could increase the incidence and duration of remission induced by cytotoxic chemotherapy. Of the 17 evaluable patients, one patient (6%) achieved complete remission, and seven patients (41%) achieved partial remissions. The median duration of remission was 1.6 months. We conclude that 13-cis-retinoic acid does not increase the incidence and duration of remission in chronic phase chronic myelogenous leukemia. PMID- 3856633 TI - The business of nursing and nursing as a business. PMID- 3856634 TI - Factors affecting the continued employment of nurses in a state-supported mental health system. PMID- 3856635 TI - A deliberative and group approach to inpatient consumer medication education. PMID- 3856636 TI - Autonomous nursing practice: changing the mind set of nursing educators. PMID- 3856637 TI - Excess leukemia in a refinery population. AB - A retrospective follow-up mortality study of white male employees of an oil refinery located in southern illinois revealed a statistically significant excess number of deaths due to leukemia compared with the experience of U.S. white males (standardized mortality ratio [SMR] = 213; 95% confidence interval [Cl], 117 to 358). The excess was due mainly to acute myeloid leukemia (AML) (SMR = 394; 95% Cl, 172 to 788). From 1973 to 1982, fourteen leukemia deaths were identified; eight of the cancers were of the AML cell type. The work histories of the decedents were examined for the potential for benzene exposure. Although specificity of the work histories was limited, the investigation has shown that the subjects did not work in jobs identified as having the highest benzene exposures. At this time, the excess leukemia remains unexplained. PMID- 3856638 TI - Atraumatic harvesting of the sural nerve. PMID- 3856639 TI - Helping your patients to stop smoking. PMID- 3856640 TI - The use of transarterial microembolization in the management of hemangiomas of the perioral region. AB - The management of oral and perioral hemangiomas depends on several clinical factors. Surgery of these benign lesions can at times be disfiguring, especially when the lips, muscles, or the maxilla and mandible are involved. In addition, by the very nature of these lesions, surgical treatment may be associated with excessive intra- and perioperative blood loss. A series of five patients who had hemangiomas in the perioral region and who were initially treated with transarterial microembolization, preoperatively in two cases and as the only treatment in three cases, is presented. The technique of microembolization is described and recommendations for its use are given. PMID- 3856641 TI - Fibro-osseous lesions of the jaws. AB - During the 15 years since the author's 1970 paper on fibro-osseous lesions of the jaws, the subject has continued to interest the clinician and pathologist. Several new entities have been delineated during this period, and new concepts and controversies regarding the diagnosis and management of these lesions have arisen. A classification of fibro-osseous jaw lesions that the author has found to be workable is presented, and criteria for their diagnosis and management based on the authors' experience is discussed. PMID- 3856642 TI - Long-term evaluation of meniscectomy of the temporomandibular joint. AB - Meniscectomy for treatment of pain and dysfunction of the temporomandibular joint is a controversial operation because of the possible late complications of limitation of movement and pain. Therefore, the long-term results of this operation were clinically and radiologically investigated in a sample of 15 patients that had had meniscectomies performed during the period from 1947-1960 (mean follow up, 29 years). On clinical examination, all patients were free of pain, none had subjectively experienced dysfunction, and all but one could open their mouths more than 39 mm. Two thirds of the operated joints were crepitant. Radiologically all joints showed structural hard-tissue changes, mainly the presence of osteophytes and flattening of the condyle and tubercle. Absence of joint space was seen in half of the joints. The results indicate that meniscectomy relieves joint pain and eliminates subjectively perceived dysfunction in the long term despite the presence of clinical and radiologic signs of degenerative joint disease; however, as the condition of many patients who have temporomandibular joint disorders improves over time without surgery, there is a need for a controlled study on the value of meniscectomy. PMID- 3856643 TI - Ampicillin concentrations in human serum, gingiva, mandibular bone, dental follicle, and dental pulp following a single oral dose of talampicillin. AB - Eighty-one patients who underwent the extraction of impacted mandibular third molars in the nonfasting state were given a single oral dose of talampicillin (500 mg) preoperatively. Specimens of venous blood (n = 132), gingiva (n = 70), mandibular bone (n = 78), dental follicle (n = 63), and dental pulp (n = 59) were obtained during the operation and assayed for ampicillin content. The mean peak concentrations in serum (9.64 micrograms/ml), gingiva (4.72 micrograms/mg), mandibular bone (1.77 micrograms/ml), dental follicle (3.46 micrograms/ml), and dental pulp (5.53 micrograms/mg) all occurred at approximately 150 minutes after administration of talampicillin. The ratios of the corresponding serum concentration to the peak concentrations in the various oral tissues when both were plotted as drug concentration curves were: gingiva, 0.50; mandibular bone, 0.16; dental follicle, 0.34; and dental pulp, 0.52. Talampicillin was absorbed well by the intestine, and sufficient concentrations of the resulting metabolite, ampicillin, were found in oral tissues. PMID- 3856644 TI - Vascular malformation: report of a case with eight-year follow up. AB - An interesting example of a vascular malformation of the mandible has been presented. Early diagnosis made conservative treatment possible. Although the lesion was small, a considerable amount of hemorrhage was encountered during surgery. Adequate treatment was provided with ligation of external carotid arteries bilaterally in conjunction with curettage and packing. After an eight year follow up, there has been no clinical or radiographic evidence of recurrence. PMID- 3856645 TI - Ameloblastic fibroma in an infant. AB - A case of ameloblastic fibroma associated with a hypoplastic lesion in an unerupted deciduous central incisor is presented. Whether this case provides new evidence concerning the time and source of origin of the ameloblastic fibroma is open to debate, but the possible implications may be worthy of further study. PMID- 3856646 TI - Tympanic plate fracture from mandibular trauma. AB - A case in which trauma to the mandibular midline resulting in posterior displacement of the left condyle and subsequent fracture of the tympanic plate is presented. Use of computed tomography was helpful in confirming the presence of the injury. PMID- 3856647 TI - Arteriovenous malformation of the submandibular gland. PMID- 3856648 TI - Post-irradiation osteogenic sarcoma. PMID- 3856649 TI - Necrosis of the upper lip from giant-cell arteritis. PMID- 3856650 TI - Sialadenoma papilliferum. AB - The twelfth case of intraoral sialadenoma papilliferum is reported. The tumor appeared on the left faucial pillar of a 76-year-old white woman and is the second lesion reported to have occurred in a woman. PMID- 3856651 TI - Management of facial trauma: teaching collaboration by example. PMID- 3856652 TI - On the comparative ethnopharmacology of malpighiaceous and myristicaceous hallucinogens. PMID- 3856653 TI - The frenectomy combined with a laterally positioned pedicle graft. Functional and esthetic considerations. AB - In many cases it is necessary to perform a frenectomy to prevent reopening of a midline diastema following closure by orthodontic therapy. Often the loss of the interdental papilla between the maxillary incisors during the classic frenectomy creates an unacceptable esthetic result. A surgical technique combining a frenectomy with a laterally positioned pedicle graft is presented. The interdental papilla is left surgically undisturbed if it is of physiologic size. If it is enlarged, gingivoplasty is performed to reduce it to an appropriate size. Closure across the midline by laterally positioning gingiva and healing by primary intention results in attached gingiva across the midline. This attached gingiva may have a bracing effect and thus aid in preventing orthodontic relapse (reopening of the diastema). Twenty-seven cases were treated. No relapse was found in 24 cases and in 3 cases only minimal relapse was noted (less than 1 mm). The esthetic result is superior to that obtained with the classic frenectomy technique. PMID- 3856654 TI - Gingival wound healing in the presence of plaque-induced inflammation. AB - An accelerated loss of connective tissue attachment has been reported following surgery in plaque-infected dentitions. It was the purpose of the present study to evaluate histologically the healing of incisional wounds in the gingival supracrestal region in the presence and absence of bacterially induced inflammation. In the experimental group, marginal periodontitis was induced around the teeth by tying plaque-retentive ligatures at the gingival margins and 10 weeks later an incisional wound was made from within the gingival sulcus to the crest of the bone. In the control group, similar incisional wounds were made in normal gingiva. In each group, three specimens were available for histologic and histometric analysis 1, 3, 7 and 21 days after wounding. In the control group, the wound healing sequence in the supracrestal region was similar to that reported following incisional cutaneous wounds. In the experimental group, epithelial continuity across the wound was re-established earlier, and marked invagination of epithelium occurred into the incision. This invagination was significantly greater than in control specimens at all time points. In addition, within the experimental group a second significant epithelial migration into the wound occurred between 7 and 21 days. The epithelial invagination extended through the major portion of the supracrestal area and terminated near the cementum surface. It is conceivable that marked epithelial invagination into a supracrestal wound may predispose to an accelerated loss of connective tissue attachment. PMID- 3856655 TI - Focal epithelial hyperplasia (Heck's disease). A case report. AB - The occurrence of focal epithelial hyperplasia (Heck's Disease) in a 12-year-old Mexican-American female is presented. Focal epithelial hyperplasia is a relatively unusual and benign disorder characterized generally by multiple asymptomatic nodules, occurring most commonly in younger segments of indigenous populations and ethnic groups. The clinical behavior, histologic appearance and possible etiologic factors of focal epithelial hyperplasia are discussed. PMID- 3856656 TI - Clinical studies of one family manifesting rapidly progressive, juvenile and prepubertal periodontitis. AB - We report clinical, radiographic and historical data on a large family with an unusually high prevalence of periodontitis. The proband, a 20-year-old black male, had the classic features of juvenile periodontitis (JP). His father was periodontally normal, while his mother had lost all her teeth at age 27 because of rapidly progressive periodontitis (RP). In addition to the 13 living children the couple had had 2 miscarriages. Of the children, one had RP, five had JP and two had prepubertal periodontitis (PP). Both maternal grandparents of the proband had become edentulous at an early age, presumably because of early-onset periodontitis. Four of 10 siblings of the proband's mother had early-onset periodontitis. In contrast, the paternal grandparents did not have early-onset periodontitis nor was periodontitis unusually prevalent in the siblings of the proband's father. The pedigree for this family is consistent with, but does not prove, an X-linked dominant pattern of genetic transmission. The natural history of early-onset periodontitis and the relationship among PP, JP and RP are not understood. The fact that the mother of the proband had RP and she had offspring with RP, JP and PP indicates a close relationship among these diseases and argues in favor of a common underlying mechanism. JP was not preceded by PP in the proband nor his affected 21-year-old brother, but one sister had PP, and at age 15 manifested JP. In her case, the alveolar bone around the deciduous molars had been destroyed, but it regenerated as the permanent premolars erupted.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3856657 TI - Atraumatic removal of porcelain veneer crowns after interim cementation. PMID- 3856658 TI - Cavity varnish and cavity liner appearance on enamel and dentin. AB - To study the appearance of a cavity varnish and a cavity liner on prepared enamel and dentin surfaces, longitudinal tooth sections were coated once or twice with Copalite or Tubulitec. Some test specimens were immersed in saline solution for 24 hours, while others were kept in air. They were observed in SEM, and the degree of coverage of the test surfaces, and the smoothness of the materials were evaluated. Neither material provided complete coverage whether one or two layers were applied. Tubulitec seemed to be partially dissolved after immersion in saline solution. Generally, Copalite covered the surfaces better and was smoother than Tubulitec. These findings have implications in regard to the ability of the materials to protect the underlying tissues and to prevent microleakage, which were discussed. PMID- 3856659 TI - Ultraviolet light stability of composite resins. AB - The ultraviolet light color stability of seven commercial composite resins was evaluated after 1, 8, and 15 days of exposure. Color differences between exposed and unexposed specimens stored for identical time periods were determined. Samples exposed to ultraviolet light showed large changes in Munsell Hue and Chroma, with smaller but significant changes in Value. Unexposed samples showed small changes in the Munsell components in some cases opposite those observed for the exposed samples. Statistical analysis showed that although significant color changes were observed, brands of composite resins could not be distinguished by length of storage in the dark. Time of exposure was a significant variable at 24 hours and 8 days. At 15 days a number of composite resins did not undergo additional significant color change. Scanning electron microscope showed a significant roughening of the surface of exposed composites with resin breakdown and exposure of the composite filler. PMID- 3856660 TI - Oral mucosal disorders in denture wearers. AB - Patients who wear dentures present with a variety of symptoms and abnormal intraoral findings. The advanced age of the average denture wearer and the nature of the denture-bearing mucosa appear to influence the nature of the problems. Superimposed infection with candidal organisms and traumatic lesions are the most commonly encountered abnormalities. Patients with symptoms but no intraoral changes frequently had a psychologic component to their complaint and did not improve after alteration of their dentures. PMID- 3856661 TI - Practical considerations for using the face-bow for complete denture prosthodontics. AB - Until an instrument that can adjust to all the anatomic hinge axis asymmetries becomes available, it is more appropriate to use a method other than the face-bow record for orienting the maxillary cast in an articulator for complete denture prosthetics. The objective of the alternate method should be to achieve a cast articulator assembly that reflects the patient's vertical cranial posture. PMID- 3856662 TI - Early prosthetic management of cleft palate. Articulation development prosthesis: a preliminary report. AB - This study evaluated the effects of early prosthetic intervention for achieving normal articulation development in cleft palate patients. Early surgery is the preferred method of treatment to permit normal articulation development. Prosthetic management provides an alternative treatment to promote more normal articulation development when early surgery is not planned. It can be concluded that a prosthesis must be placed prior to development of meaningful speech if improved articulation development is to be achieved. Close cooperation among surgeon, speech pathologist, and prosthodontist is necessary to ensure timely surgical deferral and prosthetic treatment. PMID- 3856663 TI - Maxillofacial prosthetics and iontophoresis in management of burned ears. AB - An acrylic resin stent that can be of help for successful iontophoresis of the burned ear has been described. The stent can be prepared in a short time, is simple to construct, and easy to manage. PMID- 3856664 TI - Mechanical properties of a new facial prosthetic material. AB - The tensile strength, tear resistance, and hardness of four silicone elastomers were compared. Results suggest that Cosmesil has improved mechanical properties over commonly used facial prosthetic silicone elastomers. PMID- 3856665 TI - Arthrographically assisted splint therapy. AB - Occlusal splints are often constructed to aid in treatment of temporomandibular joint meniscus displacement. Techniques for arthrographically locating the point of meniscal displacement and for fabrication of an appropriate occlusal splint are described. PMID- 3856666 TI - Occlusal adjustment by photocclusion. AB - The use of photocclusion to evaluate the results of occlusal adjustment before, during, and after treatment is described. The authors recommend the use of photocclusion to aid in evaluating occlusal adjustment performed with articulating paper. PMID- 3856667 TI - Influence of vertical dimension on masseter muscle electromyographic activity in patients with mandibular dysfunction. AB - Occlusal splints were adjusted to different vertical heights and used to single out the influence of vertical dimension of occlusion in increments on BT-EMG activity of the masseter muscle in patients with mandibular dysfunction. The vertical dimension of least EMG activity was determined for each of 60 patients, who were randomly divided into three groups according to the vertical dimension at which the occlusal splint was adjusted: group No. 1, 1 mm from occlusal vertical dimension; group No. 2, mean vertical dimension, 4.25 mm; group No. 3, mean vertical dimension, 8.25 mm. Results showed a significant reduction of masseter BT-EMG activity (series A and B) at the end of the 3-week treatment period for patients in group Nos. 2 and 3 in comparison with group No. 1. Furthermore, the short-term use of occlusal splints with a vertical height that exceeded the so-called physiologic interocclusal distance did not result in an increase in masseter BT-EMG activity. This study suggests that an increase of vertical dimension of occlusion to or near the vertical dimension of least EMG activity by means of occlusal splints can be an effective way to obtain a reduction in masseteric muscle activity. PMID- 3856668 TI - A study of the acceptability of lateral interocclusal records by the Hanau H-2 articulator. AB - The acceptability of lateral interocclusal records by the Hanau H-2 articulator was studied on 28 edentulous patients. Acceptability was determined in both right and left lateral jaw movements. Of the 56 lateral interocclusal records made, 39 (70%) were accepted by the Hanau model H-2 articulator. PMID- 3856669 TI - Materials for mouth protectors. AB - A mixture containing 18% polyvinylacetate exhibits the optimum physical properties for mouth protection in contact sports. PMID- 3856670 TI - Microwave oven drying of artificial stone. AB - The compressive strength of various artificial stones were tested using air, oven, and microwave oven drying methods to compare the three for drying refractory casts. The microwave oven can be used for rapid drying of refractory casts in removable partial denture construction. However, it should not be used for drying extremely wet casts. PMID- 3856671 TI - A system for developing and evaluating the clinical judgment of dental students. AB - A system for evaluating the clinical judgment of dental students in removable prosthodontics was presented. The major points of the system are as follows. Students must decide when the quality of their treatment is worthy of a grade. Three quality-level categories are used. Letters that have no intrinsic meaning are used to designate each quality level. Each item may be evaluated a maximum of four times by the student before remediation is instituted. Each attempt to evaluate the same procedure receives a lower point value. The final grade is determined as a percent of points earned out of a possible maximum. Faculty acceptance of the system is high. The system provides an easy means of feedback to students. PMID- 3856672 TI - Technique for constructing a prosthetic ear positioner. PMID- 3856673 TI - Convenient use of pressure indicating paste. PMID- 3856674 TI - Preventing proximal gingival overhangs in newly condensed amalgams. PMID- 3856675 TI - Topical anesthetic gel as a rubber dam lubricant. PMID- 3856676 TI - Modification of a tracheotomy tube. PMID- 3856677 TI - Biofeedback electromyography (EMG) was not applicable to the determination of interocclusal distance (IOD) PMID- 3856678 TI - An in-hospital training program in gynecologic laser therapy. AB - Because of the success of a previous pilot program developed to introduce laparoscopy as a diagnostic and therapeutic tool to residents and attending physicians not previously familiar with the instrument and procedures, a similar program was initiated in laser surgery in gynecology. With a similar format of didactic lectures, journal clubs reviewing the literature on laser surgery and supervision of the attendings learning the procedures, it was thought, the attending could then be certified to perform laser surgery independently and could be used as a teaching resource with other attendings and residents. To date, 15 attendings and 5 senior residents have been so certified. This program is an excellent alternative to laser courses and perhaps a superior method of introducing the instrument and procedure to practicing gynecologists and those in training. Since certification by the Joint Commission of Hospital Accreditation must be obtained, this program allows teaching and certification sessions simultaneously. PMID- 3856679 TI - Selective uptake of a toxic lipophilic anthracycline derivative by the low density lipoprotein receptor pathway in cultured fibroblasts. AB - N-(N-Retinoyl)-L-leucyldoxorubicin 14-linoleate (r11-DOX), a new lipophilic derivative of doxorubicin, was synthesized and incorporated into low-density lipoprotein (LDL). The drug-LDL complex contained 100-200 drug molecules/LDL particle. When cultured normal human fibroblasts were incubated with 125I-LDL incorporated drug, there was a perfect correlation between the cellular uptake plus degradation of 125I-LDL and the cellular drug accumulation. The presence of excess native LDL inhibited the cellular uptake and degradation of 125I-LDL and the drug accumulation to the same extent. In contrast, methylated LDL, which does not bind to the LDL receptor, did not alter the cellular uptake and degradation of 125I-LDL nor did it alter the drug accumulation. When LDL receptor negative fibroblasts from a patient with the homozygous form of familial hypercholesterolemia were incubated with the drug-125I-LDL complex, cellular drug accumulation was very low. The drug-LDL complex inhibited the growth of cultured normal human fibroblasts. The drug incorporated into methylated LDL was much less toxic. These findings suggest that r11-DOX incorporated into LDL is delivered to cells selectively by the LDL receptor pathway. This might be of value in the treatment of leukemia, since we have previously found that leukemic cells exhibit higher LDL receptor activity than white blood cells and bone marrow cells from healthy subjects. PMID- 3856680 TI - The estimation of recurrence risks in monogenic disorders using flanking marker loci. AB - A method is presented of calculating recurrence risks at a disease locus where there is information from flanking marker loci. This method uses output from the computer programme LIPED. Information from carrier detection tests and mutation at the disease locus can be taken into account in certain pedigrees. PMID- 3856681 TI - Discordant sex in one of three monozygotic triplets. AB - A case is reported of monozygotic triplets, discordant for phenotypic sex, in which the female presented at birth with the features of Turner's syndrome. Chromosomal analyses showed homogeneous 46,XY karyotypes in the lymphocytes of the three sibs, while a 45,X non-mosaic chromosome constitution was detected in skin fibroblasts of the female triplet. It is suggested that mitotic non disjunction or anaphase lag occurring early during embryonic development accounted for the occurrence of monosomy X in one cell line of the affected triplet. Previous observations of monozygotic twin pairs discordant for chromosome constitutions are reviewed. PMID- 3856683 TI - MSNJ Peer Review Organization Criteria Committee. PMID- 3856682 TI - Terminal transferase surveillance of remission bone marrows in childhood acute lymphoblastic leukemia: improved sensitivity with countercurrent centrifugal elutriation. AB - In an attempt to better define hematologic remission and relapse in children with TdT positive acute lymphoblastic leukemia (ALL), 101 bone marrow (BM) aspirates were obtained from 74 pediatric patients. The mononuclear cell population of these specimens was isolated using countercurrent centrifugal elutriation (CCE) and characterized by an immunofluorescent terminal deoxynucleotidyl transferase (IF-TdT) assay. Twenty-two children with non-leukemic disorders had a median of 8% (range 0-34%) TdT positive mononuclear bone marrow cells. This was similar to values obtained for 25 children with ALL off therapy and in remission (median 10%, range 1-22%) and 16 children with ALL on continuous anti-leukemic therapy and in remission (median 7%, range 1-26%). Twenty-three BM samples were obtained from 11 children in early or high risk to relapse because of increased immature cells on a routine marrow examination or previous relapse(s). Samples from the early and high risk to relapse groups contained a median of 56% (range 25-80%) and 39% (range 25-72%) TdT positive cells. In contrast, the median percent marrow lymphoblasts identified using standard morphologic criteria for these 2 groups was 12.5% (range 9-23%) and 3% (range 0-5%), respectively. All high risk patients relapsed in their BM 1-4 1/2 months after these TdT determinations. Longitudinal studies in 4 patients at increased risk to relapse consistently demonstrated elevated percentages of TdT positive cells while morphologic surveillance was inadequate in establishing a clinical diagnosis of leukemic relapse. CCE in combination with an IF-TdT assay may enhance detection of recurrent and/or residual leukemia in BM samples from children with TdT positive ALL. PMID- 3856684 TI - Brain death. Policy at Middlesex General-University Hospital. PMID- 3856685 TI - An approach to the prevention of complications of diabetes. PMID- 3856686 TI - Case report: cervical thymoma. PMID- 3856687 TI - Opinion: beware the gatekeeper. PMID- 3856688 TI - Commentary: The Peer Review Organization of New Jersey, Inc. PMID- 3856689 TI - Regulation of messenger RNA stability in mouse erythroleukemia cells. AB - The decay rates of several messenger RNA species were determined in mouse erythroleukemia cells. The t1/2 values for the actin and tubulin mRNAs were 16 to 26 hours and about seven hours, respectively. The globin mRNA, and two mRNA species subject to translation repression, the P40 and P21 mRNAs, were about as stable as the ribosomal RNA. A stable tubulin mRNA component also appeared to be present in the cells. Exposure of the cells to dimethylsulfoxide for 48 hours led to considerable increases in the rates of decay of all but the globin mRNA. The induction of erythroid differentiation caused by the drug appears to lead to activation of a mRNA-degradation process that affects individual species to different degrees. The newly synthesized actin and tubulin mRNAs lost their poly(A) rather rapidly. This was accompanied by accumulation of poly(A)-deficient mRNA chains, particularly in the case of actin mRNA. The steady-state distribution of mRNA components, determined by Northern blot analysis, also showed that the actin mRNA and one tubulin mRNA species have a high proportion of poly(A)-deficient molecules. The globin, P40 and P21 mRNAs showed little tendency to lose their poly(A) sequence. The steady-state globin and P40 mRNAs also had a low proportion of chains depleted of poly(A). For all five species, the proportions of poly(A)-deficient chains in newly synthesized mRNA were about the same in uninduced and induced cells, in spite of the large decreases in mRNA stability in the induced cells. The lack of correlation between tendency to lose poly(A) and rate of mRNA decay, and the large accumulation of poly(A)-deficient molecules in the cases of the actin and tubulin mRNAs suggest that the stability of mRNA is not determined solely by the presence of poly(A) on the RNA chains. The behavior of the untranslated species in induced and uninduced cells also fails to support the notion of a relationship between translation and mRNA decay. PMID- 3856690 TI - Mechanism of strand cleavage and exchange in the Cre-lox site-specific recombination system. AB - The bacteriophage P1 recombinase Cre mediates site-specific recombination between loxP sites. The loxP site consists of two 13 base-pair inverted repeats separated by an eight base-pair spacer region. When DNA containing the loxP site is incubated with Cre, specific cleavages occur within the spacer region, creating a six base-pair staggered cut. The cuts are centered on the axis of dyad symmetry of the loxP site, resulting in a 5' protruding terminus: 5' A decreases T-G-T-A-T G C 3' T A-C-A-T-A-C increases G. At the point of cleavage, Cre becomes covalently attached to a 3' PO4, and produces a free 5' OH. A series of experiments were carried out in which a radioactively labeled loxP site is recombined with an unlabeled loxP site to locate the point at which strand exchange takes place during recombination. The points of strand exchange coincide with the sites at which Cre cleavage of the DNA backbone had been detected. PMID- 3856691 TI - Activation of a silent gene is accompanied by its demethylation. AB - The phenomenon of gene activation by cell fusion makes it possible to study a gene when it passes from a silent to an active state. The relationship between methylation and activation of the mouse albumin gene has been investigated in two types of hybrid clones: mouse lymphoblastoma--rat hepatoma hybrids where activation is very frequent, and mouse L-cell--rat hepatoma hybrids where activation is a rare event. Analysis of the methylation pattern of seven MspI/HpaII sites that occur along the first 8000 bases of the mouse albumin gene has been performed. The entire 5' region is unmethylated only in albumin producing cells (adult liver and hepatoma); in non-hepatic cells this region is heavily methylated. In hybrids between rat hepatoma cells and mouse cells of mesenchymal origin, the only regular change is the demethylation of the most 5' site (M1), which is systematically observed in clones where expression of the mouse albumin gene has been activated. Demethylation of this site, like activation of the mouse albumin gene, is gene dosage-dependent; it is systematic in the lymphoblastoma--hepatoma hybrids and rare in L-cell--hepatoma hybrids. We conclude that demethylation of this site is tightly coupled with activation of the gene and may well be a necessary prerequisite for activation. PMID- 3856692 TI - Gemfibrozil therapy in primary hypertriglyceridemia associated with coronary heart disease. Effects on metabolism of low-density lipoproteins. AB - Certain primary hypertriglyceridemias cause abnormalities in lipoproteins that seemingly predispose patients to coronary heart disease. We examined metabolism of low-density lipoproteins (LDL) in 11 men with both hypertriglyceridemia and coronary heart disease and compared them with that of controls. The LDL turnover was measured during placebo and gemfibrozil therapy. With placebo, LDL cholesterol level usually was normal, but production and fractional clearance of LDL were high. The LDL composition also was abnormal. Gemfibrozil reduced triglycerides, lowered production and fractional clearance of LDL, and normalized LDL composition. The LDL-cholesterol level usually rose, but generally not to abnormally high levels. Therefore, normalization of LDL metabolism and marked reduction of triglycerides by gemfibrozil suggest benefit to hypertriglyceridemic patients who are at high risk for coronary heart disease. However, when LDL cholesterol level rises excessively, gemfibrozil may not be sufficient therapy. PMID- 3856693 TI - Development of quantitative analysis of plasma thromboxane B2 by gas chromatography-mass spectrometry. AB - In order to diagnose patients in thrombotic state, it is quite important to detect increased concentration of plasma thromboxane B2 (TXB2), a stable catabolite of TXA2. To determine plasma TXB2 levels with high sensitivity and selectivity, we employed gas chromatography-mass spectrometry (GC/MS). The trimethylsilyl (TMS) ether derivatives conventionally employed in GC/MS analysis of prostanoids are not suitable for quantitation of plasma prostanoids, because the mass spectra are deficient in ions with high intensity in the high mass range and TMS ether derivatives are sensitive to moisture. To solve these problems we employed tert-butyldimethylsilyl (t-BDMS) ether derivatives, based on the observation that t-BDMS ether derivatives afforded abundant ions at [M-57]+ and showed good hydrolytic stability. The reaction conditions of tert butyldimethylsilylation were also examined to optimize the selected ion monitoring response. The t-BDMS ether derivatives of prostanoids were successfully analyzed with a short capillary column with a relatively large diameter, with maintaining good separation. In conjunction with the use of reversed-phase high performance liquid chromatography as purification procedure, a sensitive and reproducible stable isotope dilution assay of plasma TXB2 was developed. The values obtained by this method correlated well with those obtained by the radioimmunoassay we have developed. PMID- 3856694 TI - [DNA-RNA cytofluorometric analysis of a case of osteosarcoma in relation to histological characteristics]. AB - We applied DNA-RNA cytofluorometry with AO stain to cell kinetic analysis of osteosarcoma in a 12-year-old girl in relation to its histological characteristics. Histological findings obtained for 9 macroscopically different lesions were grouped into 4 main structural characteristics, but their cytofluorometric results were classified into 2 main patterns of DNA-RNA distribution. One showed remarkable polyploidization with many DNA synthetic cells in the invasive lesions, which were composed of pleomorphic cells forming osteoid or occasionally cartilaginous matrix. The other showed marked accumulation of tetraploid cells almost without DNA synthetic cells, being composed of relatively uniform fibroblastic or stellate-like cells in the cartilaginous matrix. These results indicated a close relationship between cell proliferative activity and the tissue environment. PMID- 3856695 TI - Prognostic factors in children with acute lymphoblastic leukemia. Part II: Multivariate analysis. Children's Cancer and Leukemia Study Group. AB - The pretreatment characteristics of 158 children with previously untreated acute lymphoblastic leukemia diagnosed April 1972 to June 1978 were analyzed for their ability to predict prognosis. The children were treated according to therapeutic protocols 721, 745 and 765, by members of the Japanese Children's Cancer and Leukemia Study Group. Multivariate analysis was performed to determined the relationship between the characteristics and duration of survival of the patients. The following characteristics were analyzed: initial white blood cell (WBC) count, age at diagnosis, initial hemoglobin level, initial platelet count, sex, organomegaly, and treatment regimen that was provided. By using multivariate techniques, factors were found which the independently and significantly predict the length of survival. These factors were initial WBC count (r0 = 0.2908), age at diagnosis (r0 = 0.2982), and treatment regimen (r0 = 0.2488). Using the major prognostic factors of age at diagnosis and initial WBC count, a formula to predict the survival time was established. According to the initial WBC count and age at diagnosis, we classified all cases of childhood ALL as standard risk and high risk. PMID- 3856696 TI - Prognostic factors in children with acute lymphoblastic leukemia. Part I: Univariate analysis. Children's Cancer and Leukemia Study Group. AB - The pretreatment characteristics of 158 children with previously untreated acute lymphoblastic leukemia diagnosed April 1972 to June 1978 were analyzed for their ability to predict prognosis. The children were treated according to therapeutic protocols 721, 745 and 765, by members of the Japanese Children's Cancer and Leukemia Study Group. A univariate analysis was performed to determine the relationship between the characteristics and the duration of the patients' survival. The following characteristics were analyzed: initial white blood cell (WBC) count, age at diagnosis, initial hemoglobin level, initial platelet count, sex, organomegaly, and treatment regimen that was provided. Favorable prognosis was exhibited only by those patients with initial WBC counts of less than 50,000/mm3, with age at onset between 2 and 6 years, without splenomegaly, and with hemoglobin levels between 5 and 10 g/dl. The most significant contributions among the various individual prognostic factors were initial WBC count (p less than 0.001) and the age at diagnosis (p less than 0.01). PMID- 3856697 TI - [Nursing of a patient with stomatitis due to the adverse effect of cancer therapy]. PMID- 3856698 TI - [Nursing of a child suffering from the adverse effects of antineoplastic agents: remission induction in a child with acute myelocytic leukemia associated with a ventricular septal defect and aortic valve insufficiency]. PMID- 3856699 TI - [Nursing of a child with chondrodystrophy and hydrocephalus--respiratory care of a child intubated for an extended period and its effect on child development]. PMID- 3856700 TI - Malignancy in immunodeficiencies. PMID- 3856702 TI - [Eating disorders. The secret pattern of binge/purge]. PMID- 3856701 TI - [Use of series E prostaglandins in the treatment of essential hypertension]. AB - Fifty-four hypertensive patients with the average BP level of 208 +/- 3.2/125 +/- 2.4 mm Hg were infused 2 doses of PGE. Forty patients received PGE2 in the form of protein (USA) and 14 patients were administered PGE1 in the form of alprostadil (USA). Each patient received on the average 3.5 mg of PGE2 or 0.7 mg of PGE1 during 48 hours. PGE infusion by the devised scheme induced no significant side-effects, was attended by an increase in the diuresis and natriuresis as well as a BP decrease (more pronounced with PGE1) not only in the period of the infusion but also during the 2-3 days following it. The hypotensive effect and BP fall in the orthostatic position were more marked following PGE2 infusion. PGE enhanced the sensitivity of the patients to obsidan, clophelin, hydrochlorothiazide and to a lesser degree to corinfar. Infusion of PGE2 to patients with essential hypertension resistant to hypotensive agents reduced the BP and made it possible to diminish the number of the drugs prescribed and their doses. The hypotensive effect of the drugs administered persisted for up to 5-7 months. It can be expected that repeated infusions of PGE2 every 6 months, will contribute to an alleviation of arterial hypertension, the patient's clinical improvement and the lowering of doses of hypotensive drugs. PMID- 3856703 TI - Cost containment and the treatment of hypertension. PMID- 3856704 TI - A case of congestive heart failure. PMID- 3856706 TI - Non-immune hydrops fetalis: a review of five cases. PMID- 3856705 TI - Distal digital replantation. PMID- 3856707 TI - Five unusual otorhinolaryngeal cases. PMID- 3856708 TI - Stress: different concepts for different people. PMID- 3856709 TI - Prostaglandin F2 alpha output by human endometrium under superfusion and organ culture conditions. AB - Specimens of proliferative and secretory human endometrium were incubated under organ culture or superfusion conditions and the levels of PGF2 alpha in the medium were measured by radioimmunoassay. Basal rates of PGF2 alpha output during short-term superfusions and long-term (1-2 day) batch incubations, performed on the same tissue specimens, were similar. Basal output of PGF2 alpha by proliferative endometrium (230-280 ng/mg protein X d) was significantly higher than that of secretory tissue under both experimental conditions. Estradiol (10( 8) M) increased PGF2 alpha output significantly (4-fold) only in secretory endometrium under organ culture conditions; Progesterone (10(-7) M) decreased it significantly (to 1/2-1/4 of the basal level) in both types of endometria during long-term incubations and in proliferative endometrium during superfusion. Glands isolated from proliferative and secretory endometrium produced PGF2 alpha during superfusion at a rate comparable to that of endometrial tissue under similar conditions. PGF2 alpha output by glands isolated from secretory endometrium increased significantly (3-fold) when estradiol was added to the superfusion medium. PMID- 3856711 TI - 14th annual UCLA symposium. Abstracts: Molecular determinants of animal form. PMID- 3856710 TI - 14th annual UCLA symposium. Abstracts: Membrane skeletons and cytoskeletal membrane associations. PMID- 3856712 TI - 14th annual UCLA symposium. Abstracts: Molecular biology of muscle development. PMID- 3856713 TI - 14th annual UCLA symposium. Abstracts: Protein structure, folding and design. PMID- 3856714 TI - Your lab: why rent when you can buy? PMID- 3856715 TI - Market positioning: setting your directions for progress. PMID- 3856716 TI - The future of technology. PMID- 3856718 TI - How to interview and get the right employee. Interviewing: Part II. PMID- 3856717 TI - The future of technology. PMID- 3856719 TI - How often and by how much should you increase your fees? PMID- 3856720 TI - Stress in the dental lab: how to regain control. PMID- 3856721 TI - [Mechanical ventilation at home in amyotrophic lateral sclerosis]. PMID- 3856722 TI - [The effect of cytostatic therapy on pyruvate kinase activity in the erythrocytes of patients with acute myelocytic leukemia]. PMID- 3856723 TI - [Carbohydrate antigen (CA-19-9) in the blood serum of patients with benign and malignant liver diseases]. AB - The concentration of a new tumor marker CA-19-9 was determined in the blood serum of 51 patients with different diseases and in 38 healthy persons. In 95% of the examined persons, the concentration of CA-19-9 in the blood serum did not exceed 15 Units/ml in health. In the patients with benign focal and diffuse liver diseases and in the patients with rectal cancer without metastases to the liver, the level and frequency of the elevated CA-19-9 content in the blood serum did not practically differ from those in health. In primary and metastatic liver cancer, the CA-19-9 content was considerably elevated in all the patients. The combination of the CA-19-9 and CEA tests did not add to the efficacy of differential diagnosis between benign and malignant liver lesions. PMID- 3856724 TI - Construction and characterization of a cosmid of Streptomyces lividans. AB - We constructed a plasmid pR4C1 in which a DNA fragment containing the cohesive ends of an actinophage, R4 was inserted into the ClaI site of plasmid pIJ365. The plasmid pR4C1 was packaged efficiently into R4 phage particles in vivo and therefore transferred by transduction. Southern hybridization analysis of DNA from pR4C1-transducing R4 phage particles indicated that the plasmid DNA was encapsidated as head-to-tail concatemers with the cohesive ends in the termini. We designated the pR4C1 plasmid a cosmid, following the termination of Collins and Hohn (1978). PMID- 3856725 TI - Sequence of 5S ribosomal RNA gene regions and their products in the archaebacterium Halobacterium volcanii. AB - We show that the archaebacterium Halobacterium volcanii contains two ribosomal RNA gene clusters, in which genes for individual rRNAs lie in the order 16S-23S 5S. We have cloned the 5S rRNA genes of both clusters and present sequences of the two 5S rRNA genes and their 5' and 3' flanking regions, as well as the sequence of H. volcanii 5S rRNA. We show that a gene for a tRNACys lies downstream from one, but not the other, 5S rRNA gene, and have obtained evidence that this tRNA gene is transcribed in vivo. We discuss regions of potential secondary structure which may be involved in transcription termination. We note regions of unexpected flanking sequence conversation both within H. volcanii 5S rRNA gene regions, and between them and the corresponding 5S rRNA gene region of H. cutirubrum (Hui and Dennis 1984). PMID- 3856726 TI - Recombination deficient mutant of Caulobacter crescentus. AB - A recombination-deficient (Rec-) strain of Caulobacter crescentus has been isolated from a collection of mutants sensitive to ultraviolet irradiation. The Rec- mutant fails to give recombinants following phi Cr30-mediated generalized transduction or following RP4-mediated conjugation. The recombination frequency in the Rec- strain is at least 5000-fold lower than in the wild type strains. The Rec- mutant is indistinguishable from wild type in terms of morphology, growth rate, viability, and phage sensitivities, differing only in properties known to be associated with recA-type mutations in other organisms: recombination frequency, ultraviolet sensitivity, and Weigle reactivation. The map location of the rec-526 allele has not been identified, but rec-526 can be cotransferred with the fla-169 mutation by RP4-mediated conjugation at low frequency. This apparent linkage has been used to move the rec mutation to other strains. The Rec- mutant resembles recA strains of other organisms and provides a healthy strain severely deficient in recombination for use in complementation and cloning studies involving C. crescentus. PMID- 3856727 TI - The mitochondrial genome of the fission yeast Schizosaccharomyces pombe. 7. Continuous gene for apocytochrome b in strain EF1 (CBS 356) and sequence variation in the region of intron insertion in strain ade 7-50h. AB - The third BamHI fragment, containing most of gene for apocytochrome b, has been cloned and sequenced in the Schizosaccharomyces pombe strain EF1 (CBS 356). In contrast to strain ade 7-50h- (50) from the Leupold collection, in which the gene is interrupted by an intron of group II (Lang et al. 1984), the homologous gene in strain EF1 is continuous. This demonstrates that the intron in the gene for apocytochrome b is optional. Aligning the EF1 sequence with the homologous regions in strain 50, 2 base pair changes were found in the leader and 14 in the coding region. These changes led to 12 altered triplets, but 9 of them specify the same amino acid. Seven base changes were clustered within a stretch of 30 base pairs in the region in which the intron is inserted in strain 50. Five out of the resulting six triplet changes were also silent. These sequence variations around the highly conserved splice point region may be linked to the insertion or excision of the intron. PMID- 3856728 TI - [Chronic periodontitis--treatment of vertical alveolysis (III)]. PMID- 3856729 TI - [Drug-induced xerostomia]. PMID- 3856730 TI - [Drug-induced xerostomia (II)]. PMID- 3856731 TI - [Drug-induced xerostomia (III)]. PMID- 3856732 TI - Graft-versus-host disease in rhabdomyosarcoma following transfusion with nonirradiated blood products. AB - Graft-versus-host disease is a complication of transfusion of nonirradiated blood products into an immunocompromised patient, and it has been reported in hematologic and lymphoid malignancies as well as in neuroblastoma in children. We report the first case of acute graft-versus-host disease in a child undergoing chemotherapy for a rhabdomyosarcoma, who received transfusions during an intercurrent illness. The graft-versus-host disease was accompanied by an allogeneic lymphoid graft and was diagnosed on the basis of HLA studies on the patient's and her family's circulating lymphocytes and confirmed by HLA typing of the patient's skin fibroblasts. PMID- 3856733 TI - Pneumococcal vaccination in children with acute lymphocytic leukemia. AB - Sixty-three children with ALL in CCR and treated according to a standard therapy protocol were immunized with the 14-valent pneumococcal vaccine. Forty-six children were vaccinated 1, 3, or 6 months following initial induction remission; 15 were vaccinated 4-6 weeks following successful completion of 30 months of antileukemia therapy; and two were vaccinated at the time of diagnosis. Response to the vaccine was suboptimal and by the 6-month follow-up there were only two serotypes for which more than half the patients tested had greater than or equal to 300 ng antibodies N/ml. PMID- 3856734 TI - Thymidine kinase isoenzymes in human acute monocytic leukemia. AB - Two thymidine kinase isoenzymes, TK 3 and TK 4, from mononuclear leucocytes from a patient with acute monocytic leukemia, were purified and characterized in regard to the molecular weights and kinetic properties. The molecular weights of TK 3 and TK 4 were 60 000 and 45 000, respectively. In the presence of 2 mM ATP, the molecular weight of TK 3 increased to 200 000, whereas the molecular weight of TK 4 was unchanged. Studies of the kinetic properties showed clear differences between TK 3 and TK 4. With thymidine as substrate, TK 3 showed biphasic kinetics with a Km of 22 microM, and TK 4 showed Michaelis-Menten kinetics with a Km of 0.33 microM. With ATP as substrate, TK 3 showed Michaelis-Menten kinetics with a Km of 100 microM, and TK 4 showed biphasic kinetics with a Km of 3.5 microM. With dTTP as inhibitor, TK 3 showed cooperative inhibition kinetics, and TK 4 showed non-cooperative competitive inhibition kinetics. The dTTP concentration at 50% inhibition was 75 microM for TK 3 but 380 microM for TK 4. Comparison of the molecular weights and the kinetic properties of TK 3 and TK 4 with the corresponding data previously obtained for TK 1 and TK 2 from normal human lymphocytes indicate the existence of four thymidine kinase isoenzymes in human leucocytes. PMID- 3856736 TI - [Lithium in the therapy of hematologic diseases in childhood]. AB - The literature as well as the author's data of this topic are reviewed. Lithium stimulates myelopoesis in vitro, especially via CSF-production. This effect is associated with a modulation of cyclic nucleotides. Lithium stimulates leukemic cell lines too. However, according to epidemiological data lithium does not play an etiological role in leukemia. Furthermore, lithium does not stimulate several tumor cell lines in culture. The effect of cytostatic drugs as well as remission rates are not lessened by lithium. In spite of increased production the functions of the granulocytes are not impaired. Because of the wide range of serum level variation serum level determinations are mandatory. To treat hematological disorders a serum level between 0.7 and 1.2 mmol/l should be achieved. Flame emission photometry and atomic absorption photometry are equivalent methods for determination of the serum level. CNS, thyroid gland, kidney, electrolyte balance, gastrointestinal tract have to be monitored for side effects. Lithium therapy has not be given in pregnancy and to breast feeding mothers. In neutropenia with increased susceptibility to infections lithium therapy including serum level monitoring can be given. Lithium reduces leukopenia and infections following cytotoxic chemotherapy for solid tumors. Current pediatric studies are investigating whether patients with chemotherapy induced neutropenia benefit from this effect in terms of increased and prolonged remission rates. PMID- 3856737 TI - Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 18-1985. An 18-year-old man with abdominal pain and an eating disorder. PMID- 3856735 TI - Increased secretion of type beta transforming growth factor accompanies viral transformation of cells. AB - Cells transformed by Harvey or Moloney sarcoma virus secrete at least 40 times as much type beta transforming growth factor as their respective untransformed control cells. The transformed cells bind only 20 to 50% as much type beta transforming growth factor as the control cells, suggesting that transformation causes down-regulation of the type beta transforming growth factor receptor. PMID- 3856739 TI - Pervasive procrustianism--isopropyl alcohol intoxication. PMID- 3856738 TI - Genetic links for scattered Jews. PMID- 3856741 TI - Delta hepatitis--Massachusetts. PMID- 3856740 TI - Adult circumcision and diabetes. PMID- 3856742 TI - Outbreak of diarrhea linked to dietetic candies--New Hampshire. PMID- 3856744 TI - Maternal mortality in North Carolina: a historical survey and current update. PMID- 3856743 TI - Panic disorder. PMID- 3856745 TI - How can we know when we are doing more good than harm for a terminally-ill cancer patient? PMID- 3856746 TI - Medical economics, ethics, and education: some old wines in new bottles. PMID- 3856747 TI - Blood replacement for repeat cesarean section: "type and screen" preferable to cross matching. PMID- 3856748 TI - Blood replacement for repeat cesarean section. PMID- 3856749 TI - Physicians can and should offer direction for the 1985 legislature. PMID- 3856750 TI - Keats, Socrates and fool's parsley--water hemlock poisoning. PMID- 3856751 TI - Why an Army Medical Reserve? PMID- 3856752 TI - Cefuroxime sodium. PMID- 3856753 TI - Pericardial pseudoeffusion due to steroid-induced lipomatosis. PMID- 3856754 TI - Treatment of refractory leukemia with high-dose cytosine arabinoside. AB - Thirteen patients with refractory acute nonlymphocytic leukemia or with accelerated phase of chronic myeloid leukemia have been treated with high dose of cytosine arabinoside (Alcysten, Spofa). The drug was administered in doses of 3 g/m2/day. Six of 10 evaluable patients responded to the therapy. The mean duration of complete remission, achieved in 3 patients, was 18 weeks. The duration of partial remission ranged from 5 to 11 weeks. The treatment was well tolerated. Apart from expected hematological toxicity, transitory nausea and vomiting were the most frequently encountered side effects. PMID- 3856755 TI - Clinical usefulness of immunological marker analysis in adult patients with acute leukaemia. PMID- 3856756 TI - Defective renal prostaglandin synthesis in hypertensive patients with morbid obesity. AB - Renal prostaglandin synthesis in 36 obese hypertensive patients was estimated from measurements of 24-hour urinary prostaglandin E2 (PGE2) excretion rates. PGE2 was measured by radioimmunoassay using Dray antiserum prior to and 1 week after starting a fast supplemented by 320 cal derived from 30 g of carbohydrate, 45 g protein, and 2 g essential fatty acids. Sodium intake was 120 mEq daily or less. Comparisons were made to a control population of age-matched, nonobese, normotensive, healthy volunteers on a normal diet. Mean weight fell from 260 +/- 8 to 247 +/- 8lb, p less than 0.001. Urinary PGE2 in the obese patients prior to the fast was 104 +/- 27 ng/day, significantly lower than the 404 +/- 124 ng/day found in the control population, p less than 0.005. After the 1st week of the fast urinary PGE2 rose to 213 +/- 55, p less than 0,02. This value was not different from that in the control group. Blood pressure fell (p less than 0.001) in these patients from 143/94 +/- 3/2 to 134/87 +/- 3/2 mm Hg after the 1st week of the fast. Deficient renal prostaglandin synthesis in obese hypertensive patients was corrected by fasting. Such changes in the prostaglandin system may mediate or occur in response to changes in the sodium-volume balance of these patients. These changes in renal prostaglandin synthesis may partly contribute to the blood pressure reduction of these patients. PMID- 3856757 TI - Hereditary motor-sensory neuropathy (HMSN): possible X-linked dominant inheritance. AB - The inheritance of the hereditary motor and sensory neuropathies (HMSN) is usually autosomal dominant. We studied a kinship with a pattern of X-linked dominant inheritance. The phenotype was similar to HMSN of the "intermediate" type. Men were more severely affected than women, and hypertrophic nerves were not found. Nerve conduction was very slow in men, but it was mildly slow or normal in women. No male-to-male transmission was found in six generations. PMID- 3856758 TI - Sleep disorders and Gilles de la Tourette's syndrome. PMID- 3856759 TI - A study of job satisfaction, nurses attitudes to the profession & conditions. PMID- 3856761 TI - Issues arising from artificial conception practices. PMID- 3856760 TI - Women with phenylketonuria: successful management of pregnancy and implications. AB - Dietary management of five pregnancies in two women (sisters) with classical phenylketonuria (PKU) is described. One child died neonatally of congenital heart disease and one pregnancy miscarried. Of the three surviving children the only physically and mentally normal child, followed up to eight years, was born after a carefully planned pregnancy with strict dietary control preconceptually and throughout pregnancy. One pregnancy treated dietetically from six weeks gestation resulted in a child mentally normal at seven years but born with oesophageal atresia. The third surviving child is microcephalic and mentally retarded but dietetic treatment did not commence till 28 weeks gestation. It is concluded that to be effective, dietary control must be instituted preconceptually. PMID- 3856762 TI - Early clinical experience with imipenem-cilistatin. AB - We treated 15 patients with 16 proven bacterial infections with imipenem cilistatin. Nine isolates were gram positive cocci, the remaining ten being gram negative bacilli and all had MICs less than or equal to 2.0 mg/l. Eight patients had respiratory tract infections, four urinary tract infections and there were three others. Twelve of 16 infections were microbiologically cured. There were no important drug side effects or toxicity. Imipenem-cilistatin is a potentially useful formulation. PMID- 3856763 TI - Post viral bronchitis and asthma. PMID- 3856764 TI - Acute leukaemia treatment results: Wellington Hospital 1971-73, 1981-83. PMID- 3856765 TI - Epidemiology report: influenza 1984. National Health Laboratory, Kenepuru. PMID- 3856766 TI - Dextropropoxyphene. PMID- 3856767 TI - Cot death and diet. PMID- 3856768 TI - Recurrent genital candidosis in women. PMID- 3856769 TI - An unusual legionellosis case yields the first New Zealand isolation of Legionella dumoffii. PMID- 3856770 TI - The handicapped and hospitals. PMID- 3856771 TI - Resuscitation outside hospital. PMID- 3856772 TI - Mianserin. PMID- 3856773 TI - Sodium fluoride as an oral carcinogen. PMID- 3856774 TI - Mid-face fractures. Case study. PMID- 3856775 TI - Disaster nursing. 2. The advanced emergency medical care course (A.E.M.C.). PMID- 3856776 TI - An experience of a lifetime. PMID- 3856777 TI - "Is that ward report finished yet"? PMID- 3856778 TI - Primary nursing: 1984 learning exchange workshops at Massey University. PMID- 3856779 TI - An example of planned change at Wellington Hospital. PMID- 3856780 TI - Professional management. PMID- 3856781 TI - 25 years of TMJ. PMID- 3856782 TI - Changes in the number of dental school applicants who are children of dentists. PMID- 3856783 TI - Diagnosis of enamel defects. PMID- 3856785 TI - Pipeline of dentists. PMID- 3856784 TI - Future of dentistry. PMID- 3856786 TI - The high cost of education. PMID- 3856787 TI - Assessment of dental needs of New York City schoolchildren. PMID- 3856788 TI - Examination, evaluation and behavior management following injury to primary incisors. PMID- 3856790 TI - Today's graduate--outlook 1985. PMID- 3856789 TI - Conscious sedation in pediatric dentistry. PMID- 3856791 TI - Designing the associateship. PMID- 3856792 TI - A cooperative effort: membership recruitment and retention. PMID- 3856793 TI - Valuation of a practice. PMID- 3856794 TI - Clinical correlations of ovarian cancer antigen NB/70K: a preliminary report. AB - NB/70K is a glycoprotein extracted from human ovarian cancer tissue. It was measurable postoperatively in the plasma of 89% of 127 women with epithelial cancer of the ovary; 60% of these women had levels in excess of 11 kU/mL compared with 5% of control subjects. The level of NB/70K correlated with FIGO stage and amount of residual tumor, but not with pathology subtype or tumor differentiation. Elevated NB/70K plasma levels also were found in patients with benign gynecologic neoplasms and a variety of systemic carcinomas, and modest elevation was observed in association with hepatic and renal decompensation. The highest levels, found preoperatively in women with ovarian cancer, decreased after tumor resection. These preliminary data indicate that the NB/70K assay has high sensitivity in epithelial ovarian cancer, and plasma levels appear to correlate with tumor volume. PMID- 3856795 TI - Ten years of mandibular fractures: an analysis of 2,137 cases. PMID- 3856796 TI - A comparison of healing and pain following excision of inflammatory papillary hyperplasia with electrosurgery and blade-loop knives in human patients. AB - Twenty human patients participated in a study designed to compare electrosurgery with blade-loop knives for the excision of inflammatory papillary hyperplasia in a split-mouth study. Questionnaires were used to assess pain and patient preference during a 2-week postoperative period, and photographs were made to chronicle the healing process. Healing occurred at approximately the same rate following each procedure. The majority of subjects did not perceive a difference in discomfort with either technique on the day of surgery or at any time during follow-up. Of those who did have a preference, a significant majority favored electrosurgery on the day of treatment. This preference became statistically insignificant on the second postoperative day and beyond. PMID- 3856797 TI - Mandibular fractures: do we overtreat them? AB - An unusual case of mandibular fracture is presented. Against the wishes of the oral surgeons, the patient refused to have the prescribed treatment. A year later healing was complete, with no residual complications. PMID- 3856798 TI - A study into the mucosal absorption of isosorbide dinitrate at different intraoral sites. AB - This study measured the absorption of isosorbide dinitrate (ISDN) into the systemic circulation after application of tablets to the buccal, palatal, or sublingual mucosa in six healthy subjects. After 1 minute serum levels were detectable by gas liquid chromatographic analysis from buccal and sublingual sites. Levels progressively increased, peaking at 5 minutes, and then progressively decreased during the 30-minute sampling period. At most of the time periods serum levels were greater from sublingual sites than from buccal sites. ISDN levels were not detected at any time in any subject after application to the palatal mucosa. As with the skin, the keratinized layer of the oral mucosa may be an important barrier to absorption. The findings appear relevant to the delivery of drugs via the oral mucosa for systemic effect. PMID- 3856799 TI - Megaloblastic anemia with oral lesions: a consequence of gastric bypass surgery. AB - This report describes the clinical and histologic features of a case of megaloblastic anemia, resulting from a gastric bypass operation, in which oral symptoms were the first significant finding. Although this case appears to be the first of its type reported in the literature, the potential for future cases is increasing with the increased use of the gastric bypass operation in the treatment of morbid obesity. PMID- 3856801 TI - Follow-up report on epithelial-myoepithelial carcinoma of intercalated duct origin. PMID- 3856800 TI - Experimental development of herpes simplex virus infection in hamster buccal pouch. AB - In the present study, we have developed an intraoral herpes simplex virus type 1 (HSV-1) infection model in the hamster buccal pouch. This animal model could be used for further oral cancer research related to herpes simplex virus infection. PMID- 3856802 TI - An underestimation on the part of dental and medical practitioners regarding the importance of the red lesion. PMID- 3856803 TI - Asymptomatic early invasive carcinoma. PMID- 3856804 TI - Chondromyxoid fibroma of the maxilla. Electron microscopic findings and review of the literature. AB - A case of chondromyxoid fibroma of the anterior maxilla is presented. The light and electron microscopic appearances of this tumor are described. A review of chondromyxoid fibromas of the jaws is performed, with a discussion of the appropriate therapy. PMID- 3856805 TI - Oral manifestations of sarcoidosis: report of a case masquerading as a neoplasm. AB - An unusual case is reported in which sarcoidosis presented originally as a cheek mass unrelated to the parotid or submandibular glands. The clinical findings were highly suggestive of a neoplastic process. A general review of sarcoidosis follows the case report. PMID- 3856806 TI - Melanoma with metastasis to an apical periodontal cyst. AB - A rare case of multiple oral foci of metastatic melanoma in a 23-year-old man is presented. A unique aspect is the metastasis of a malignant neoplasm to the wall of an apical periodontal cyst. PMID- 3856807 TI - Pulpal response to a calcium hydroxide material for capping exposures. AB - Two calcium hydroxide cements, Dycal and Life, were compared as direct pulp capping agents in forty teeth of two beagle dogs. Both materials produced similar responses after observation periods of 4 and 12 weeks. It was noted that the response in one animal were less favorable, but the reason could not be demonstrated. PMID- 3856808 TI - A histologic evaluation of dental pulp tissue of a patient with periodontal disease. AB - Clinical and histologic examination of twenty-five teeth of a patient with varying degrees of attachment loss resulting from periodontal disease showed no correlation between the severity of periodontal disease and morphologic changes of the pulp tissue. PMID- 3856809 TI - Incidence of nutrient canals in hypertensive patients: a radiographic study. AB - The present study was undertaken to determine the correlation between the radiographic appearance of nutrient canals and hypertension. Comparison was made in hypertensive and nonhypertensive patients of the same age group and similar oral status. The results showed an increased incidence of nutrient canals in hypertensive patients. PMID- 3856810 TI - Exposure distribution, absorbed doses, and energy imparted for panoramic radiography using Orthopantomograph model OP 5. AB - The absorbed doses and energy imparted for the Orthopantomograph model OP 5 using two different collimators (0.9-1.3 X 33 mm2 and 0.6-0.9 X 39.5 mm2, respectively) were examined at 70 and 75 kV. The absorbed doses were estimated by thermoluminescence dosimetry in a sectioned phantom and by the energy imparted from measurements of areal exposure using a plane parallel transmission ionization chamber. The exposure distribution was surveyed on radiographic film. The anterior part of the parotid glands received the highest absorbed doses (2.4 3.2 mGy) when the wider collimator was used, with a decrease of two to three times when the narrower collimator was used. Other areas received absorbed doses of about 1.0 to 1.5 mGy or below. An increase of the kV from 70 to 75 had a minor influence. The energy imparted for the wider collimator was 0.6-0.8 and for the narrower collimator, 0.4-0.6 mJ. PMID- 3856811 TI - Structural hard-tissue changes in temporomandibular joints with internal derangement. AB - The literature reports contradictory findings concerning the relationship between structural hard-tissue changes and internal derangement of the temporomandibular joint. Therefore, an analysis was undertaken of radiographs, including arthrograms of 128 patients with internal derangement in the form of anterior displacement of the disk. Structural hard-tissue changes were seen in one half of the patients with anterior disk displacement without reduction but very seldom in patients showing anterior disk displacement with reduction. Structural hard tissue changes were always found in joints with perforation of the disk. Thus, structural hard-tissue changes occurred predominantly in patients with advanced internal derangement and may be interpreted as signs of progression of the disease. PMID- 3856812 TI - Erupted odontoma. PMID- 3856813 TI - Pregnant molar. PMID- 3856814 TI - Correction of anterior mandibular vertical excess: the functional genioplasty. AB - The functional genioplasty is an osteotomy-ostectomy of the anterior mandible which reduces excessive lower anterior facial height to 55% of the total anterior facial height. The procedure is indicated particularly when one factor contributing to the long-face syndrome is vertical excess of the anterior mandible. The surgical technique involves creation of a tenon and mortise which not only preserves the insertions of both the labiomental muscles and at least some of the suprahyoid muscles but also improves the stability of transosseous fixation. Superior repositioning and advancement of the chin and myocutaneous structures produce both functional and esthetic benefits for the patient. PMID- 3856815 TI - Recovery of jaw muscle function following injection of a myotoxic agent (lidocaine-epinephrine). AB - Intramuscular injection of 2% lidocaine hydrochloride with epinephrine (1:100,000) bilaterally into the masseter muscles of growing rats resulted in a 30% to 40% decrease in maximal stimulated bite force at 3 days following injection. By 6 days postinjection, bite force had begun to increase, but significant differences from control bite force levels were still present 15 days postinjection. By 25 days postinjection, recovery to control values was complete. These data are consistent with previously documented fiber destruction and subsequent regeneration following exposure to this and other local anesthetic agents. It is suggested that local myotoxic effects produced by the administration of such drugs may result in a transient functional deficit in the injected muscle(s) that may persist for up to 2 weeks. PMID- 3856816 TI - Ulcerative stomatitis, gingivitis, and skin lesions. An unusual case of primary herpes simplex infection. AB - A 2-year-old white girl had acute oral ulceration, gingivitis, pyrexia, cervical lymph node enlargement, and a generalized, initially macular and later purpuric rash. None of the common oral viral infections, with the exception of chickenpox, is usually associated with a rash. This presented a diagnostic dilemma that appears not previously to have been reported in the dental literature. PMID- 3856817 TI - Oral manifestations in Cowden's syndrome. Report of four cases. AB - Cowden's syndrome or multiple hamartoma and neoplasia syndrome is a hereditary disorder combining multiple hamartomas of many organs. These hamartomas are derived from ectodermal, mesodermal, and endodermal tissues and may undergo spontaneous malignant changes. Small papular cutaneous lesions and papillomatous outgrowth and papular lesions of the oral mucosa are the most predominant features of the syndrome. Since the orocutaneous lesions often precede the associated malignant degenerations, they may serve as a diagnostic signal for the probably developing neoplasia in other organs. The presence of extensive papillomatous and papular lesions in the oral mucosa combined with skin lesions should therefore alert the clinician to suspect the presence of Cowden's syndrome, the early diagnosis of which is important in order that the concomitant malignant changes might be discovered at the earliest possible moment. Four cases of Cowden's disease are presented, with emphasis on the oral manifestations of this syndrome. PMID- 3856818 TI - Familial hyperparathyroidism associated with cementifying fibromas of the jaws in two siblings. AB - Two brothers affected by primary hyperparathyroidism, both with unusual jaw lesions, are described here. The atypical growth patterns of these lesions led to their surgical exploration, which revealed that they were histologically similar benign fibro-osseous lesions. The possible influence of long-standing metabolic alterations in hyperparathyroidism in the genesis of fibro-osseous lesions is discussed. PMID- 3856819 TI - Atypical central neurilemmoma of the mandible. AB - Neurilemmomas arising within the jawbones are rare. Most occur in the mandible as slowly growing enlargements that may or may not be painful; radiographically, they are large single or multiloculated radiolucencies mimicking other benign jaw lesions. The histology is characteristic, with Antoni A and B tissues and a well defined capsule. This article reports an unencapsulated neurilemmoma of the mandible and reviews and summarizes the features of the central neurilemmomas in the literature. PMID- 3856820 TI - An interesting case of adult facial gangrene (from Papua, New Guinea). AB - A case of a nomalike lesion occurring in an elderly woman is described. The patient was admitted to the hospital in a debilitated state and was undergoing supportive management when the facial condition developed. Because of the rapidly progressing nature of the lesion, apparently emanating from the alveolar soft tissues, a diagnosis of cancrum oris was made. Although progression of the lesion was halted following institution of an appropriate therapeutic regimen, the patient's general condition deteriorated and she finally died 12 days after admission. The exact nature of the underlying systemic condition was never diagnosed. PMID- 3856821 TI - Nevus of Ota with associated palatal involvement. AB - The nevus of Ota is a macular discoloration of the face which is most commonly found in the Japanese. The sclera is also often affected. The oral cavity is less commonly involved in the Japanese and is rarely affected in non-Orientals. The present case is only the seventh reported in a non-Oriental patient with clinical oral involvement and the first to illustrate the histopathologic features of an oral-lesion. PMID- 3856822 TI - The thermomechanical properties of gutta-percha. Part V. Volume changes in bulk gutta-percha as a function of temperature and its relationship to molecular phase transformation. AB - A variety of gutta-percha materials was subjected to dilatometric analysis to measure volume changes which take place with heating and cooling. The volume changes were found to be related directly to the molecular transformation kinetics of the polymer material and to the temperature ranges within which they take place. If the gutta-percha in the apical segment is not elevated above 45 degrees C, molecular transformation is avoided and the ultimate volume changes which accompany temperature cycling are small, predictable, and controllable. PMID- 3856823 TI - A differential diagnostic approach to the symptomatology of acute dental pain. AB - Seventy-four patients with acute pulpitis, apical periodontitis, marginal periodontitis, or pulpoperiodontitis were examined. A series of symptoms and signs was registered. Diagnostic specificities and sensitivities were calculated, and thirteen variables were subjected to discriminant analysis and log-linear multiway contingency table analysis. Pulpoperiodonitis was found inseparable from pulpitis on the basis of the registered symptoms and signs. Several symptoms and signs previously believed to have differential diagnostic power were found insignificant. The following combination of symptoms and signs yielded a correct diagnosis in 82.1% of the cases: constant pain, tenderness to temperature changes, "the tooth feels extruded," impaired mouth opening, tenderness to palpation in apical area, and mobility. PMID- 3856824 TI - Computed tomography in the diagnosis of an odontogenic keratocyst. AB - Computed tomography (CT) was found to be useful in the diagnosis of an odontogenic keratocyst. A CT scanner is described and its advantages, radiation dose levels, and limitations are discussed. PMID- 3856825 TI - Experimentally produced bone lesions. AB - The origin of radiolucencies in jawbones has been the subject of many studies; this investigation tried to elucidate this origin in a standardized way. A precision film holder was used to fix film, x-ray machine, and object. Artificially produced bone lesions in bone sections were radiographed in various circumstances. The conclusions were that removal of cancellous bone does not influence the radiographic image in a visible way, damage of the junction area changes the trabecular pattern but does not produce a radiolucency, and a sufficient degree of damage to the cortical bone produces a radiolucency but does not change the trabecular pattern. PMID- 3856826 TI - Gemination and twinning in the permanent dentition. AB - Gemination and twinning are uncommon developmental anomalies of the hard dental tissue. These aberrations are manifested either as anomalous teeth or as supernumerary teeth. Six cases of gemination and twinning are presented in this article. A simplified classification of these anomalies has been suggested. PMID- 3856828 TI - Fibrous defect in the mandible. PMID- 3856827 TI - Missing tooth. PMID- 3856829 TI - Two-rooted maxillary lateral incisor. PMID- 3856830 TI - Enzyme variation in T. brucei ssp. II. Evidence for T. b. rhodesiense being a set of variants of T. b. brucei. AB - A collection of stocks of Trypanosoma brucei rhodesiense isolated in Kenya have been examined for electrophoretic variation in 20 enzymes. The results obtained have been analysed in order to determine whether these trypanosomes are diploid and undergo mating and to determine the genetic distance between T. b. rhodesiense, T. b. brucei and T. b. gambiense. The enzyme electrophoretic markers were further used in experiments involving cyclically transmitted mixtures of stocks aimed at detecting genetic exchange in the laboratory. No genetic exchange was detected. Two novel features of the enzyme electrophoretic results were found. Firstly, the stocks of T. b. rhodesiense were considerably more homogeneous than equivalent collections of stocks of T. b. brucei and secondly, all the stocks examined were heterozygous for two alleles of alkaline phosphatase and showed an excess of heterozygotes at the phosphoglucomutase locus. The degree to which these features are typical of T. b. rhodesiense has been examined in relation to previously published data. The results obtained strongly support the view that T. b. rhodesiense is a set of variants of T. b. brucei rather than a subspecies and a working hypothesis as to the relationship between T. b. brucei and T. b. rhodesiense is proposed to explain the enzyme electrophoretic data obtained. PMID- 3856831 TI - [How long can sterilized instruments be stored?]. PMID- 3856832 TI - Discipline maligned: strategies for action. PMID- 3856833 TI - [Acyclovir in the treatment of viral complications in patients with leukemia]. PMID- 3856835 TI - Autopsy and clinical findings in acute leukemia and chronic myeloproliferative diseases--an evaluation of 104 patients. AB - In acute myeloid leukemia (AML-46 patients) and various entities of chronic myeloproliferative diseases (CMPD-58 patients) an evaluation and comparison of clinical and postmortem findings has been performed. This study included also aspirates and core biopsies of the bone marrow which were initially taken on admission of those patients. Classification of CMPD was done following the concept of Georgii et al. (1984) into CGL -24-, CMGM-6-, E-MS-13- and MS/OMS-15 cases. There was a significant increase in blastic crisis in CGL compared with the other entities and in the latter a prolongation of the total course of disease due to a long period between symptoms--clinical diagnosis. As revealed by the autopsies causes of death were mostly infections (pneumonia, septicemia-50%) and lethal hemorrhages (gastrointestinal and cerebral--about 30%) in both AML and CMGM patients. Rare causes comprised fatal pulmonary embolism due to a peripheral thrombocytosis in CMPD, acute rupture of the spleen and extensive leukemic infiltrates of the myocard in AML. In addition to the well known giant enlargement of the spleen in MS/OMS, the relatively high frequency of a meningeal involvement (meningeosis leukemica) in AML (about 35%) and during an acute transformation in CMPD (up to 30%) was conspicuous. The examination of the bone marrow at various sites became feasible during the postmortem procedure and thus provided the opportunity to investigate the development and extent of a myelosclerosis evolving in CMPD. In contrast to the a- or hypoplasia and regeneration of the hematopoiesis following chemotherapy, the evolution of myelosclerotic lesions showed a very uniform pattern throughout the skeleton and obviously no reversal of a manifest MS/OMS after cytotoxic treatment. PMID- 3856834 TI - Differential pattern of DNA-aneuploidy in human malignancies. AB - The differential pattern of DNA-aneuploidy, detected by flow cytometry (FCM) regarding its frequency, grade and multiclonality, was investigated and correlated to tumor type, malignancy grade, tumor stage and prognosis in a multi institutional study at the University of Munster. High resolution measurements using admixed normal blood reference cells were undertaken in 2413 cases of 13 different malignant diseases and in 776 benign lesions or samples. The incidence of DNA-aneuploidy was highest in melanomas, carcinomas, testicular tumors, sarcomas (75%-95%) and myelomas (65%). Acute leukemias showed an intermediate DNA aneuploidy rate of 40% with special subgroups represented by common ALL (44%), p less than 0.05) and myelomonocytic/monocytic AML (47%, p less than 0.01). The lowest DNA-aneuploidy-rate was found in basal cell skin carcinomas (19%) and congenital melanocytic nevi (9%). No case of DNA-aneuploidy was observed in the 776 benign lesions or samples.--DNA-indices giving the grade of DNA-aneuploidy with 1.0 for normal diploid G1/0 cells were found distributed predominantly between 1.0 and 2.0 in the solid tumors, except testicular tumors, clustering around a triploid maximum at 1.5. DNA-indices of myelomas and acute leukemias generally ranged below 1.25 with lower DNA-aneuploidy grades in AML than in ALL (p less than 0.01).--In melanomas the aneuploidy rate was higher (86%) in metastases than in the primary tumors (54%, p = 0.001).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3856836 TI - Aggressive osteoblastoma. PMID- 3856837 TI - Linear empirical Bayes estimation of means and variances. AB - Linear empirical Bayes estimators have been obtained for means and variances that apply to random sampling from populations whose structure is unknown or only partly known. PMID- 3856838 TI - Base composition-independent hybridization in tetramethylammonium chloride: a method for oligonucleotide screening of highly complex gene libraries. AB - An oligonucleotide hybridization procedure has been developed that eliminates the preferential melting of A X T versus G X C base pairs, allowing the stringency of the hybridization to be controlled as a function of probe length only. This technique, which uses tetramethylammonium chloride, is especially helpful whenever a highly complex library is screened with a pool of oligonucleotide probes, which usually vary widely in base composition. The procedure can also be applied advantageously whenever an exact match to an oligonucleotide probe is desired, such as in screening for clones having as little as a single-base alteration generated by in vitro mutagenesis. PMID- 3856839 TI - The NADPH binding site on beef liver catalase. AB - Beef liver and human erythrocyte catalases (EC 1.11.1.6) bind NADP tenaciously [Kirkman, H. N. & Gaetani, G. F. (1984) Proc. Natl. Acad. Sci. USA 81, 4343 4348]. The position of NADP on beef liver catalase corresponds to the carboxyl terminal polypeptide hinge in Penicillium vitale fungal catalase, which connects the common catalase structure to the additional flavodoxin-like domain. In contrast to nearly all other known structures of protein-bound NADP, NAD, and FAD, the NADP molecule of beef liver catalase is folded into a right-handed helix and bound, in part, in the vicinity of the carboxyl end of two alpha-helices. A water molecule (W7) occupies a pseudosubstrate site close to the C4 position of the nicotinamide and is hydrogen bonded to His-304. Although the NADP and heme groups approach each other to within 13.7 A, there is no direct interaction. The function of the NADP remains a mystery. PMID- 3856840 TI - Extensive but reversible depletion of ATP via adenylate cyclase in rat adipocytes. AB - In adipocytes, adenylate cyclase is positively regulated by beta-adrenergic agents and negatively regulated by adenosine. Incubation of adipocytes with adenosine deaminase relieves the inhibition of adenylate cyclase by destroying the adenosine that the cells release into the medium. When adipocytes are incubated with adenosine deaminase and the beta-adrenergic agent isoproterenol, most of their ATP is converted to AMP in 5 min. Either isoproterenol or adenosine deaminase alone has little or no effect. In the additional presence of the phosphodiesterase inhibitor 4-(3-butoxy-4-methoxybenzyl)imidazolidin-2-one (Ro 20 1724) cAMP accumulates instead of AMP. Under these conditions, cAMP represents 40 50% of the total intracellular adenine nucleotides, and ATP only 5%. N6-(L-2 phenylisopropyl)adenosine, a deaminase-resistant adenosine agonist, prevents beta adrenergic stimulation. 8-(p-Sulfophenyl)theophylline and 3-isobutyl-1 methylxanthine are both adenosine antagonists that can replace the deaminase in permitting beta-adrenergic stimulation of adenylate cyclase, but only the latter also inhibits the phosphodiesterase and causes accumulation of cAMP. When the ATP depleted adipocytes are washed with fresh medium, the nucleoside triphosphate level can be restored within 5 min. The ATP-restored adipocytes can respond rapidly to a second dose of isoproterenol and adenosine antagonist. These findings point out the important role of adenosine in controlling adenylate cyclase activity and the possible involvement of adenylate cyclase in the control of energy flow in rat adipocytes. PMID- 3856841 TI - Complete sequence of the chicken glyceraldehyde-3-phosphate dehydrogenase gene. AB - Glyceraldehyde-3-phosphate dehydrogenase (GAPDH), an evolutionarily conserved glycolytic enzyme, is constitutively expressed in most cell types yet is induced to high levels during the development of fast twitch muscle fibers. To analyze the organization and regulation of the chicken GAPDH gene, we first constructed a nearly full-length GAPDH cDNA clone (pGAD-28). pGAD-28 was used in the current study to screen a genomic library, and several overlapping clones were selected. The GAPDH coding region was detected within a 4.65-kilobase Xho I/EcoRI genomic fragment that was completely sequenced by using the M13 cloning vector system. A small portion of pGAD-28 was used as a primer to extend a 33-nucleotide sequence from the 5' end of GAPDH mRNA. The canonical promoter "TATA" region was found 22 base pairs from the 5' end of the mRNA. The 5' end of the GAPDH gene is extraordinarily G+C-rich (80%) and contains two inverted sequences with a 9-base pair homology found at -58 (G-G-G-G-C-G-G-G-C) and -93 (G-C-C-C-G-C-C-C-C) nucleotides from the transcription start site. Sequencing also revealed the location of 11 introns within the transcribed portion of the GAPDH gene. The placement of at least 3 of the introns corresponds to the boundaries of protein domains within prokaryotic and eukaryotic GAPDHs that were previously detected by x-ray crystallography. This concordance suggests that introns may have participated in the construction of the earliest GAPDH gene. PMID- 3856842 TI - Genes specifying degradation of 3-chlorobenzoic acid in plasmids pAC27 and pJP4. AB - All of the structural genes for 3-chlorobenzoate degradation are clustered in a 4.2-kilobase (kb) region of plasmid pAC25 (or pAC27) in Pseudomonas putida. An approximate 10-kb DNA segment containing three structural genes for chlorocatechol metabolism present on plasmid pJP4 in Alcaligenes eutrophus shows homology with the above 4.2-kb region of pAC27. In spite of the detectable sequence homology in the structural genes present on both plasmids, the regulation of their expression seems quite different; unlike pAC27, structural rearrangements are prerequisite for efficient expression of the 3-chlorobenzoate genes on plasmid pJP4. Structural features such as stem-loop structures present on plasmid pJP4 are most likely the starting materials for such rearrangements. PMID- 3856843 TI - Structure at 2.9-A resolution of aspartate carbamoyltransferase complexed with the bisubstrate analogue N-(phosphonacetyl)-L-aspartate. AB - In an x-ray diffraction study by the isomorphous replacement method, the structure of the complex of aspartate carbamoyltransferase (EC 2.1.3.2) bound to the bisubstrate analogue N-(phosphonacetyl)-L-aspartate has been solved to 2.9-A resolution (R = 0.24). The large quaternary structural changes previously deduced by molecular replacement methods have been confirmed: the two catalytic trimers (c3) move apart by 12 A and mutually reorient by 10 degrees, and the regulatory dimers (r2) reorient each about its twofold axis by about 15 degrees. In this, the T-to-R transition, new polar interactions develop between equatorial domains of c chains and the Zn domain of r chains. Within the c chain the two domains, one binding the phosphonate moiety (polar) and the other binding the aspartate moiety (equatorial) of the inhibitor N-(phosphonacetyl)-L-aspartate, move closer together. The Lys-84 loop makes a large relocation so that this residue and Ser 80 bind to the inhibitor of an adjacent catalytic chain within c3. A very large change in tertiary structure brings the 230-245 loop nearer the active site, allowing Arg-229 and Gln-231 to bind to the inhibitor. His-134 is close to the carbonyl group of the inhibitor, and Ser-52 is adjacent to its phosphonate group. However, no evidence exists in the literature for phosphorylation of serine in the mechanism. Residues studied by other methods, including Cys-47, Tyr-165, Lys 232, and Tyr-240, are too far from the inhibitor to have a direct interaction. PMID- 3856844 TI - Cloning and nucleotide sequence determination of the Clostridium pasteurianum ferredoxin gene. AB - We have constructed a library of Clostridium pasteurianum DNA cloned in the plasmid pBR322. Based on the known amino acid sequence for C. pasteurianum ferredoxin, a 64-fold degenerate heptadecanucleotide pool was synthesized. This mixed probe hybridized to two clones which were shown to contain greater than 6 kilobase pairs of the same genomic DNA. Sequence analysis of a common Sau3A1 0.6 kilobase-pair fragment revealed that it contains the information for the apoferredoxin structural gene. According to the DNA sequence, the only post translational processing of this small apoprotein is the hydrolysis of the initiator methionine. Putative transcription and translation start and stop signals are present within the sequence. PMID- 3856845 TI - Stabilization of a primary loop in myosin subfragment 1 with a fluorescent crosslinker. AB - A bifunctional fluorescent alkylating agent, dibromobimane, has been used to stabilize a preexisting primary loop in myosin subfragment 1 (S-1). The crosslink achieved joins Cys-707 (called sulfhydryl group "SH1") of the 20-kDa domain (formerly called "20K" domain) with a thiol of the 50-kDa domain and seems to place the dibromobimane near the ATP-perturbable tryptophan. PMID- 3856846 TI - Rapid purification of cytosolic epoxide hydrolase from normal and clofibrate treated animals by affinity chromatography. AB - Epoxide hydrolase from liver cytosol (cEH) of both normal and clofibrate-treated mice can be bioselectively adsorbed onto an affinity column prepared from epoxy activated Sepharose and 7-methoxycitronellyl thiol. The free ligand is a modest inhibitor of cEH (I50, approximately equal to 3 X 10(-4) M) and lacks the epoxide function necessary for it to be turned over as a substrate. This study demonstrates that a methoxy group can be used to mimic an oxirane in a vertebrate system. Bioselective elution of cEH can be accomplished with several chalcone oxides, which are selective potent inhibitors (I50, 1-50 X 10(-7) M), and activity can be recovered by dialysis. This procedure thus enhances the purification by offering independent opportunities for selective binding and selective elution. Conservatively, a 40%-80% recovery of partially inhibited enzyme activity can be achieved in 4-48 hr with a 30- to 90-fold purification. The purified cEH from clofibrate-induced animals was essentially homogeneous by NaDodSO4/PAGE and had an apparent subunit molecular weight of 58,000. The cEHs from normal and clofibrate-induced animals appeared identical by NaDodSO4/PAGE. Since the cEH activity in normal and clofibrate-treated animals is due to the same enzyme, the increase in cEH activity caused by selected hypolipidemic agents appears to be true induction. PMID- 3856847 TI - Ribosomal RNA transcription: proteins and DNA sequences involved in preinitiation complex formation. AB - An in vitro transcription system consisting of partially purified transcription initiation factor(s) and purified RNA polymerase I from Acanthamoeba castellanii was used to study the mechanism of faithful initiation of ribosomal RNA transcription. Formation of a preinitiation complex between one or several auxiliary transcription proteins and the DNA template in the absence of RNA polymerase I was demonstrated. A series of 3'- and 5'-deletion mutants of the template was used in prebinding competition experiments and provided evidence for three distinct functional regions of the promoter: core motif A interacts with the transcription initiation factor(s) and is required for faithful transcription; the start motif is required for transcription, but it can be deleted without affecting the binding of transcription initiation factor(s); and motif B stabilizes preinitiation complex formation (in addition to core motif A), but it is dispensable for faithful initiation of transcription. PMID- 3856848 TI - Nucleotide sequence of murine ornithine decarboxylase mRNA. AB - Ornithine decarboxylase (OrnDCase; L-ornithine carboxy-lyase, EC 4.1.1.17) is the first and rate-limiting enzyme in the biosynthesis of polyamines in mammalian cells. During cell growth the enzyme is regulated by rapid changes in the level of its mRNA and protein. To explore the molecular basis of these changes, we cloned a full-length cDNA copy of the major 2.4-kilobase OrnDCase mRNA from mouse cells and determined its sequence. The cDNA contains 2465 nucleotides derived from OrnDCase mRNA, consisting of a 737-nucleotide-long 5' noncoding segment, a coding segment of 1383 nucleotides terminated by a TAG triplet, and a 342 nucleotide 3' noncoding segment. The encoded protein of 461-amino acid residues has a molecular weight of 51,105 and has a potential site for phosphorylation by casein kinase II. In the unusually long 5' leader sequence, there are four ATG triplets, each of which is followed by an in-phase termination signal; the presence of these upstream ATGs could explain the low in vitro translational activity of OrnDCase mRNA reported earlier. A restriction digest of mouse genomic DNA was probed with a defined OrnDCase coding sequence, revealing a multimembered family of OrnDCase-related genes. PMID- 3856849 TI - Calmodulin accelerates the rate of polymerization of human platelet actin and alters the structural characteristics of actin filaments. AB - Calmodulin stimulated the rate of Mg2+-induced polymerization of human platelet actin. The stimulatory effect was due to an increase in the nucleation phase of the reaction; there was no effect on the steady-state viscosity. The calmodulin antagonist trifluoperazine blocked the stimulatory effect of calmodulin. Addition of EGTA to the reaction mixture also stimulated the rate of actin polymerization; however, the effect of calmodulin on actin polymerization is not due to Ca2+ chelation, as is presumed to be the case for EGTA. Electron microscopy revealed structural differences in the filaments prepared in the presence of calmodulin as compared to those prepared with trifluoperazine. In the presence of calmodulin, the filaments were thicker, suggesting that they consisted of multiple actin polymers. In addition, numerous projections were present perpendicular to the filaments, as well as localized areas of filament bundling. It was not possible to demonstrate a direct interaction between calmodulin and actin, which raises the possibility that the calmodulin effect may be indirect through a calmodulin binding protein or calmodulin-dependent enzyme. Regardless of whether calmodulin is acting directly or indirectly, these results provide evidence that calmodulin may play a regulatory role in either the polymerization of actin or in determining the structural characteristics of actin filaments. PMID- 3856850 TI - Channels formed by botulinum, tetanus, and diphtheria toxins in planar lipid bilayers: relevance to translocation of proteins across membranes. AB - The heavy chains of both botulinum neurotoxin type B and tetanus toxin form channels in planar bilayer membranes. These channels have pH-dependent and voltage-dependent properties that are remarkably similar to those previously described for diphtheria toxin. Selectivity experiments with anions and cations show that the channels formed by the heavy chains of all three toxins are large; thus, these channels could serve as "tunnel proteins" for translocation of active peptide fragments. These findings support the hypothesis that the active fragments of botulinum neurotoxin and tetanus toxin, like that of diphtheria toxin, are translocated across the membranes of acidic vesicles. PMID- 3856851 TI - Structure of proteins with single-site mutations: a minimum perturbation approach. AB - A large number of mutant proteins with single amino acid substitutions are now being produced. The ability to predict the structural changes expected from such mutations would aid greatly in the efficient utilization of the mutagenic techniques and in the interpretation of the changes in stability and function that result. A minimum perturbation approach is suggested as a first step in such structural predictions and is tested by application to a recently isolated variant of the hemagglutinin glycoprotein. The agreement between the predicted structure and that inferred from the x-ray refinement is encouraging and provides support for the proposed modeling procedure. PMID- 3856852 TI - Opacification of gamma-crystallin solutions from calf lens in relation to cold cataract formation. AB - To determine the molecular mechanisms for cold cataract formation in the nucleus of the young mammalian lens, we have investigated the thermally reversible opacification of gamma-crystallin solutions isolated from calf lens. Coexistence curves (plots of opacification temperature Tc versus protein concentration) were determined for the individual gamma-crystallin fractions II, III, and IV as well as for the unfractionated gamma-crystallin mixtures isolated from the nucleus and cortex. The coexistence curve of gamma IV-crystallin is remarkably elevated above those of gamma II- and gamma III-crystallin and the gamma-crystallin mixtures. The gamma IV-crystallin fraction is the major determinant of the opacification temperature within the whole lens or isolated cytoplasm. Quasielastic light scattering spectroscopy of gamma IV-crystallin solutions indicates that above Tc there are two populations of protein aggregates of distinctly different mean size. As the temperature is lowered towards Tc, both populations increase in size. Opacification occurs when the population of large scatterers, which is composed of less than 0.1% protein by weight, reaches an average radius of about 20,000 A. PMID- 3856853 TI - Selective internalization of granule membrane after secretion in mast cells. AB - [3H]Galactose, covalently bound to cell surface glycoconjugates of rat peritoneal mast cells, was used to study internalization of labeled plasma membrane and granule membrane constituents before or after secretion stimulated by compound 48/80. Internalized label was distinguished quantitatively from label on the cell surface by its inaccessibility to enzymatic removal. Three different situations were compared. (i) With label only on the plasma membrane, and in the absence of secretion, incubation at 37 degrees C (but not at 0 degree C) resulted in a gradual decrease of label on the cell surface until, after approximately equal to 2 hr, a steady state was reached with 93% of all cell-bound label remaining on the cell surface. Recycling of internalized label was demonstrated. (ii) When cells were labeled on the plasma membrane and then stimulated to secrete, subsequent retrieval of (unlabeled) granule membrane did not affect the rate or extent of simultaneous internalization of labeled plasma membrane. (iii) When both plasma membrane and exposed granule membrane were labeled after secretion, subsequent incubation at 37 degrees C (but not at 0 degrees C) resulted in approximately equal to 33% of all cell-bound label becoming internalized during 4 hr, indicating additional internalization of label due to retrieval of labeled granule membrane. In all three cases, loss of label into the medium occurred with a half-life of 8-11 hr, showing that no extensive shedding of granule membrane occurred after secretion. The results suggest either that no mixing of labeled membrane constituents occurred between the plasma membrane and granule membrane or that during retrieval of granule membrane, sorting of membrane was taking place at the cell surface. PMID- 3856854 TI - Expression of the metastatic phenotype in cells transfected with human metastatic tumor DNA. AB - NIH 3T3 mouse fibroblasts form nonmetastasizing fibrosarcomas upon transformation by the Ha-ras oncogene isolated from the EJ human bladder carcinoma cell line and subcutaneous inoculation into immunocompetent NFS/NCr mice. DNA from a human metastatic tumor was transfected into these Ha-ras transformants, and one of the resulting colonies yielded a lung metastasis after subcutaneous inoculation. DNA was isolated from this metastasis and subjected to a second round of transfer into Ha-ras-transformed NIH 3T3 cells. Inoculation of these transfected cultures into mice led once again to formation of metastases, this time at a higher frequency. Examination of four of the resulting metastases revealed discrete human DNA fragments that were common to all four. These findings demonstrate that the metastatic phenotype can be transferred via DNA from cell to cell and is associated with the presence of a discrete DNA segment. This segment is not identical to the myc oncogene or to any of the frequently detected ras tumor oncogenes. PMID- 3856855 TI - Glucose transport protein is structurally and immunologically related to band 3 and senescent cell antigen. AB - Senescent cell antigen, a polypeptide that appears on the surface of senescent and damaged cells, has been shown to be derived from band 3. In the present study, the relationship between the as yet unidentified glucose transporter and senescent cell antigen is examined. Since cytochalasin B is a specific and potent competitive inhibitor of glucose transport in human erythrocytes, the glucose transport carrier was isolated by affinity chromatography on cytochalasin B Sepharose 4B columns and eluted with D-glucose. This purification procedure is both a method of isolation and a functional assay for the glucose transporter. Purified glucose transporter gave a sharp, single band at Mr approximately equal to 60,000 when analyzed by NaDod-SO4/PAGE. Glucose transporter was identified in erythrocyte membranes by the immunoblotting technique, using both antibodies raised against purified glucose transporter and anti-idiotypic antibodies. Two dimensional peptide mapping revealed substantial peptide homology between glucose transporter and senescent cell antigen. In addition, the glucose transporter shared peptide homology with band 3 and its defined proteolytic fragments located toward the carboxyl terminus of band 3. Peptide homology between glucose transporter and the Mr approximately equal to 41,000 cytoplasmic segment of band 3 that contains the amino terminus could not be demonstrated. Thus, glucose transporter appears to be part of or derived from band 3, and to share substantial peptide homology with senescent cell antigen. PMID- 3856856 TI - Evidence for higher rates of nucleotide substitution in rodents than in man. AB - When the coding regions of 11 genes from rodents (mouse or rat) and man are compared with those from another mammalian species (usually bovine), it is found that rodents evolve significantly faster than man. The ratio of the number of nucleotide substitutions in the rodent lineage to that in the human lineage since their divergence is 2.0 for synonymous substitutions and 1.3 for nonsynonymous substitutions. Rodents also evolve faster in the 5' and 3' untranslated regions of five different mRNAs; the ratios are 2.6 and 3.1, respectively. The numbers of nucleotide substitutions between members of the beta-globin gene family that were duplicated before the man-mouse split are also higher in mouse than in man. The difference is, again, greater for synonymous substitutions than for nonsynonymous substitutions. This tendency is more consistent with the neutralist view of molecular evolution than with the selectionist view. A simple explanation for the higher rates in rodents is that rodents have shorter generation times and, thus, higher mutation rates. The implication of our findings for the study of molecular phylogeny is discussed. PMID- 3856857 TI - Multiple duplications of complement C4 gene correlate with H-2-controlled testosterone-independent expression of its sex-limited isoform, C4-Slp. AB - Mouse liver cDNA clones related to the C4 and C4-Slp isoforms of the fourth component of complement differ by few nucleotide changes within a region of substantial divergence from human C4. It is suggested that the mouse C4 gene duplication is an evolutionarily recent event with respect to the time of mammalian radiation. This conclusion is reinforced by the presence of a single C4 gene in the Syrian hamster. Most H-2 haplotypes, including those characterized by an undetectable C4-Slp protein, possess two C4 gene copies which, in contrast to the neighboring factor B, show a marked restriction site polymorphism. The genetic variation of this region is emphasized by the presence in the mouse of a rare "polymorphism" for C4 gene number. Multiple C4-related gene copies characterize those exceptional wild-derived H-2 haplotypes, H-2w7, H-2w16, and H 2w19, that determine the expression of the C4-Slp protein in female animals. PMID- 3856858 TI - Characterization of a temperature-sensitive mutant of mouse FM3A cells defective in DNA replication. AB - The characterization of a temperature-sensitive mutant (tsFT20 strain, dnats) of mouse FM3A cells is reported. After incubation of tsFT20 cells at the nonpermissive temperature (39 degrees C), DNA synthesis ceased with little change in either RNA or protein synthesis. Flow-microfluorometric analysis revealed that the cell cycle of tsFT20 cells grown at 39 degrees C for 16 hr was similar to that of wild-type cells that were synchronized at the G1/S boundary and at S phase by treatment with aphidicolin, a specific inhibitor of DNA polymerase alpha. The DNA polymerase alpha activity of tsFT20 cells measured in crude cell extracts or in purified preparations was inactivated more rapidly at 39 degrees C than the activity of wild-type cells. In the growth revertants of the tsFT20 cell strain, the heat lability of DNA polymerase alpha decreased. These data suggest that tsFT20 is a temperature-sensitive mutant of DNA polymerase alpha or of a factor associated with DNA polymerase alpha that is essential for its activity. PMID- 3856859 TI - Allelic polymorphism and transassociation of molecules encoded by the HLA-DQ subregion. AB - A monoclonal antibody, CC11.23, with monomorphic specificity predominantly for products of the HLA-DQ subregion, has been used to demonstrate primary structural variation among DQ molecules. Two cell lines of each haplotype (DR1-7) were radiolabeled with [3H]tyrosine. alpha and beta chains were isolated from CC11.23 reactive preparations, and their amino-terminal tyrosine sequences were determined. Each DR haplotype (with the exception of DRw6) was found to express a distinct DQ molecule with a minimum of three allelic forms of the DQ alpha chain and five allelic forms of the DQ beta chain. At the primary structural level, the locus for the DQ beta chain appears to be as polymorphic as the locus for the DR beta chain. Unlike the locus for the DR alpha chain (which is essentially nonpolymorphic), the locus for the DQ alpha chain was found to be polymorphic. Comparison of DQ molecules from two different heterozygous cell lines with those from homozygous cell lines revealed that in heterozygotes, DQ alpha chains from either allele can associate with DQ beta chains from one allele. The formation of hybrid HLA-DQ molecules by both cis and trans gene complementation, coupled with several polymorphic forms of each of the DQ subunits, considerably increases the repertoire of DQ alloantigens in heterozygotes. PMID- 3856860 TI - Protection against gram-negative bacteremia and endotoxemia with human monoclonal IgM antibodies. AB - Hybridomas producing human monoclonal IgM antibodies (mAbs) against bacterial lipopolysaccharide (LPS) were generated by fusion of B lymphocytes from sensitized human spleen with heteromyeloma cells. The splenocytes were from patients undergoing splenectomy during staging for Hodgkin disease after vaccination with the J5 mutant of Escherichia coli, which is deficient in O antigenic side chains. This deficiency exposes the core oligosaccharide, common to LPS of all Gram-negative bacteria. The mAbs cross-reacted strongly with endotoxins from a wide range of unrelated species of Gram-negative bacteria. The mAbs also gave strong protection against LPS in the dermal Shwartzman reaction and against lethal Gram-negative bacteremia in mice. These findings indicate that monoclonal IgM against LPS endotoxin can neutralize its toxicity in vivo and might be valuable for treatment of patients with Gram-negative bacteremia. Analysis of one of the hybridoma clones, A6(H4C5), showed that the IgM mAb is directed against the covalently bound lipid A, which represents the most conservative and least variable structural element of LPS. PMID- 3856861 TI - Invasiveness and ploidy of human mammary carcinomas in short-term culture. AB - Invasiveness and ploidy were examined in cultures of human epithelial cells derived from nonmalignant breast tissue, primary breast carcinomas, and breast cancer effusion metastases. Successful short-term culture was achieved from approximately 70% of the primary breast cancers. These primary cancers were essentially diploid by flow cytometry and karyotype in contrast to the effusion metastases, which were mostly aneuploid. The diploid tumor cells retained their malignant phenotype in culture as demonstrated by invasion into a denuded human amnion basement membrane. In contrast, epithelial cells cultured from nonmalignant mammary tissue did not invade the amnion. We suggest that the diploid carcinoma cultures may be useful for investigating the essential differences between normal and malignant cells and may complement information derived from studies of tumor cell lines with grossly aberrant karyotypes. PMID- 3856862 TI - Cell lines and clinical isolates derived from Ph1-positive chronic myelogenous leukemia patients express c-abl proteins with a common structural alteration. AB - The Philadelphia chromosome (Ph1), observed in greater than 90% of chronic myelogenous leukemia (CML) patients, results from a specific chromosomal translocation involving the c-abl gene. The translocation breakpoint occurs near c-abl and correlates with the production of an altered c-abl mRNA. In the CML derived cell line K562, Ph1 is accompanied by a structurally altered c-abl protein (P210c-abl) with in vitro tyrosine kinase activity not detected with the normal c-abl protein (P145c-abl). We have examined c-abl proteins in other Ph1 positive CML cell lines and found that they all express P210c-abl. P210c-abl was also detected in bone marrow cells from CML patients with Ph1 in the accelerated and blast crisis phases of the disease. Comparison of the [35S]methionine-labeled tryptic peptides generated from the normal P145c-abl and P210c-abl showed that they have closely related structures, but additional polypeptide sequences are present in P210c-abl. Based on these results we propose that translocation of c abl in Ph1-positive CML results in the creation of a chimeric gene leading to the production of a structurally altered c-abl protein with activated tyrosine kinase activity. The altered P210 c-abl protein is strongly implicated in the pathogenesis of CML. PMID- 3856863 TI - Assignment of the gene for Wilson disease to chromosome 13: linkage to the esterase D locus. AB - Wilson disease (WD) is an autosomal recessively inherited disorder of copper metabolism for which the basic defect is still unknown. Twenty-seven autosomal markers were investigated for linkage in a large inbred kindred with affected individuals in two generations. Also, serum copper and ceruloplasmin were measured on all available members. Close linkage (theta = 0.06) with a logarithm of odds (lod) score of 3.21 was found between the gene for WD and the esterase D locus. Efficient detection of linkage was made possible by the use of a multisibship inbred pedigree. The discovery of a polymorphic marker genetically linked to the WD locus has profound implications both for investigation of the primary gene defect and for clinical services. PMID- 3856865 TI - The molecular electronic device and the biochip computer: present status. AB - The idea that a single molecule might function as a self-contained electronic device has been of interest for some time. However, a fully integrated version- the biochip or the biocomputer, in which both production and assembly of molecular electronic components is achieved through biotechnology-is a relatively new concept that is currently attracting attention both within the scientific community and among the general public. In the present article we draw together some of the approaches being considered for the construction of such devices and delineate the revolutionary nature of the current proposals for molecular electronic devices (MEDs) and biochip computers (BCCs). With the silicon semiconductor conductor industry already in place and in view of the continuing successes of the lithographic process it seems appropriate to ask why the highly speculative MED or BCC has engendered such interest. In some respects the answer is paradigmatic as much as it is real. It is perhaps best stated as the promise of the realm of the molecular. Thus it is envisioned that devices will be constructed by assembly of individual molecular electronic components into arrays, thereby engineering from small upward rather than large downward as do current lithographic techniques. An important corollary of the construction technique is that the functional elements of such an array would be individual molecules rather than macroscopic ensembles. These two aspects of the MED/BCC- assembly of molecular arrays and individually accessible functional molecular units--are truly revolutionary. Both require scientific breakthroughs and the necessary principles, quite apart from the technology, remain essentially unknown. It is concluded that the advent of the MED/BCC still lies well before us. The twin criteria of utilization of individual molecules as functional elements and the assembly of such elements remains as elusive as ever. Biology engineers structures on the molecular scale but biomolecules do not seem to be imbued with useful electronic properties. Molecular beam epitaxy and thin-film techniques produce electronic devices but they "engineer down" and are currently unable to generate individual molecular units. The potential of the MED/BCC field is matched only by the obstacles that must be surmounted for its realization. PMID- 3856864 TI - A human acetylcholinesterase gene identified by homology to the Ace region of Drosophila. AB - The Ace locus of the Drosophila genome controls biosynthesis of the neurotransmitter-hydrolyzing enzyme acetylcholinesterase (acetylcholine acetylhydrolase, EC 3.1.1.7). We injected the mRNA species hybridizing with DNA fragments from this region into Xenopus oocytes, in which acetylcholinesterase mRNA is translated into active acetylcholinesterase. A 2.0-kilobase (kb) fragment of DNA from this region selectively hybridizes with Drosophila mRNA capable of inducing the biosynthesis of acetylcholinesterase in oocytes. This Drosophila DNA fragment cross-hybridized with human brain poly(A)+ RNA. We therefore used this DNA fragment as a probe for homologous sequence(s) in a human genomic DNA library and thus selected a 13.5-kb human DNA segment. DNA blot-hybridization revealed that a 2.6-kb fragment of this human DNA segment hybridizes with the Drosophila 2.0-kb DNA fragment. Both Drosophila and human fragments hybridized with a human brain mRNA species of about 7.0-kb that was barely detectable in the acetylcholinesterase-deficient HEp carcinoma. A fraction containing mRNA of similar size, extracted from human brain, induced acetylcholinesterase biosynthesis in oocytes. The human DNA fragment also was used in hybridization selection experiments. In oocytes, hybrid-selected human brain mRNA induced acetylcholinesterase activity that was completely inhibited by 1,5-bis[4 allyldimethylammonium)phenyl]pentan-3-one dibromide but not by tetraisopropyl pyrophosphamide, a differential response to these inhibitors characteristic of "true" human brain acetylcholinesterase. These findings strongly suggest that both the Drosophila and the human DNA fragments are directly involved in controlling acetylcholinesterase biosynthesis. PMID- 3856866 TI - Total synthesis of (+/-)-11 alpha-hydroxyprogesterone by cyclization of a polyunsaturated epoxide. AB - The total synthesis of a typical 11-hydroxylated steroid, (+/-)-11 alpha hydroxyprogesterone, was achieved by picric acid-catalyzed tricyclization of a polyunsaturated epoxide appropriately substituted with ketal, hydroxyl, and acetylenic units. This epoxide was prepared by a multistage sequence featuring two successive alkylations of intermediary, monocyclic sulfones. The first sulfone intermediate was obtained by means of a short sequence starting from levulinic acid and diethyl succinate and involving a selective cyclization reaction. PMID- 3856867 TI - Studies on angiotensin II and analogs: impact of substitution in position 8 on conformation and activity. AB - Affinity, residual agonist activity, and inhibitor properties of a series of angiotensin II analogs modified at the COOH-terminal position (X8-substituted peptides) have been probed for structure/conformation-biological activity relationships. The results emphasize (i) the large impact that subtle conformational variations caused by structural alterations in the position 8 side chain have on biological properties, (ii) the implication of the COOH-terminal carboxyl group in both affinity and intrinsic activity, and (iii) the influence that the bulkiness of the side chain in position 8 of antagonists has on the local conformation at the COOH terminus and thus on the inhibitory properties. In the hormone, the phenylalanine-8 ring is required for its steric influence and aromaticity to ensure a fully active conformation at the COOH terminus. Especially, correct orientation of the position 8 carboxyl group relative to the phenyl group of the phenylalanine residue may be necessary for agonistic activation of the angiotensin receptor complex. Replacement of the aromatic ring on the COOH-terminal residue by a nonaromatic group leads to incorrect orientation of the carboxyl group and causes the appearance of antagonist properties. Although the steric effects of the side chain can be modulated by specific interaction of its chemical groups (if any) with the peptide backbone, we found a good correlation between the size of the side chain-e.g., the steric parameter V gamma (the van der Waals volume consisting of the C alpha, C beta, and C gamma atoms), the conformational properties in the backbone (3J HC alpha NH), and the binding capacities in all compounds tested. PMID- 3856868 TI - Periodicity of leucine and tandem repetition of a 24-amino acid segment in the primary structure of leucine-rich alpha 2-glycoprotein of human serum. AB - The complete primary structure of the 3.1S leucine-rich alpha 2-glycoprotein (LRG) present in human plasma has been determined. This protein (Mr approximately 45,000) consists of a single polypeptide chain with one galactosamine and four glucosamine oligosaccharides attached. The polypeptide has two intrachain disulfide bonds and contains 312 amino acid residues of which 66 are leucine. The amino acid sequence can be exactly divided into 13 segments of 24 residues each, eight of which exhibit a periodic pattern in the occurrence of leucine, proline, and asparagine. The consensus sequence for the repeating tetracosapeptide unit is Pro-Xaa-Xaa-Leu-Leu-Xaa-Xaa-Xaa-X aa-Xaa-Leu-Xaa-Xaa-Leu-Xaa-Leu-Xaa-Xaa-Asn-Xaa Leu-Xaa-Xaa-Leu. This periodicity suggests that the unique structure of LRG arose from a series of unequal crossovers of a precursor oligonucleotide sequence that encoded a building block rich in leucine. Overall, the amino acid sequence of LRG is not significantly homologous to the continuous sequence of any protein in the current data base. However, the consensus tetracosapeptide sequence shows strong homology to segments of many mitochondrial proteins, viral envelope proteins, and oncogene proteins that have a high leucine content and transmembrane domains. Tandem repetition of similar segments also occurs in apolipoproteins that have amphipathic helical potential. Prediction of the secondary structure by the Chou Fasman rules and calculation of the hydrophilic/hydrophobic profile by several methods confirm the tandem repetition of largely hydrophobic structural units; these begin with a beta-turn that leads into an organized structure with alpha helical or beta-sheet potential. These structural characteristics and the homology to mitochondrial proteins and apolipoproteins suggest that LRG is a membrane-derived or membrane-associated protein containing a series of domains capable of bipolar surface orientation. PMID- 3856869 TI - Isolation of a somatic-cell mutant defective in phosphatidylserine biosynthesis. AB - Mutant clones of Chinese hamster ovary (CHO) cells defective in the base-exchange reaction of phospholipids with choline were isolated by using an in situ enzymatic assay for the reaction in cell colonies immobilized on polyester cloth. The specific activities of the choline-exchange reaction in extracts of one of the mutants (designated 64) grown at 33 degrees C and 40 degrees C were 13% and 6% of those in parental (CHO-K1) cells, respectively. The choline-exchange activity in the mutant was more thermolabile in cell extracts than that in the parent, suggesting that a mutation in the structural gene for the choline exchange enzyme might have been induced in this mutant. In culture medium supplemented with lipoprotein-deficient serum, mutant 64 grew almost normally at 33 degrees C but divided only twice at 40 degrees C and then stopped growing. Labeling of intact cells with [32P]Pi showed that mutant 64 was also strikingly defective in the biosynthesis of phosphatidylserine at 40 degrees C but was normal at 33 degrees C. Most temperature-resistant revertants of mutant 64 exhibited nearly normal ability to synthesize phosphatidylserine at 40 degrees C and also showed choline-exchange activity similar to that in parental cells. The addition of phosphatidylserine to medium supplemented with newborn calf serum, in which mutant 64 grew more slowly than parental cells at 40 degrees C, restored the growth rate of the mutant to the parental level. Our findings suggest that the choline-exchange enzyme functions as the major route for the formation of phosphatidylserine and that the temperature-sensitive growth of mutant 64 is due to a defect in phosphatidylserine biosynthesis at 40 degrees C. PMID- 3856870 TI - Molecular cloning of the human cholecystokinin gene by use of a synthetic probe containing deoxyinosine. AB - A synthetic DNA based on the known amino acid sequence of the brain/gut peptide cholecystokinin (CCK) was synthesized. This DNA contained deoxyinosines at ambiguous codon positions and was used as a probe to isolate the CCK gene directly from a human genomic library. Nucleotide sequence analysis of the isolated gene revealed that human preprocholecystokinin consists of 115 amino acid residues, with 11 amino acids in common with the human gastrin precursor, another member of the gastrin-CCK family, and that the coding region is separated by a single, long intron. CCK appears to be encoded by a single-copy gene in the haploid human genome, as revealed by genomic Southern hybridization analysis, suggesting that the same gene is expressed both in gut and brain. PMID- 3856871 TI - Expression of a mouse long terminal repeat is cell cycle-linked. AB - The expression of the long terminal repeat (LTR) of intracisternal A particle retroviral sequences which are endogenous to the mouse genome has been shown to be linked to the early G1 phase of the cell cycle in Friend erythroleukemia cells synchronized by density arrest and also in logarithmically growing cells fractionated into cell-cycle compartments by centrifugal elutriation. Regions of homology were found in comparing the LTR sequence to a repetitive Syrian hamster sequence specifically expressed in early G1 in hamster cells. PMID- 3856872 TI - Investigation of nucleotide binding sites on chloroplast coupling factor 1 with 3'O-(4-benzoyl)benzoyl adenosine 5'-triphosphate. AB - The subunit locations of each of the three nucleotide binding sites of soluble chloroplast coupling factor 1 have been studied with the photoaffinity label 3'-O (4-benzoyl)benzoyl-ATP. This derivative is an effective inhibitor of ATPase activity. Photolysis of the radioactive label when bound to each of the three nucleotide sites on the coupling factor has been examined. For the nucleotide site that normally binds ADP very tightly, NaDodSO4/polyacrylamide gel electrophoresis after photolysis indicates that primarily the beta polypeptide chain is appreciably labeled (86%), although some labeling of the alpha polypeptide chain is found (14%). For the site that binds MgATP tightly, 97% of the radioactivity is found on the beta polypeptide chain. The alpha and beta polypeptide chains are labeled in approximately equal amounts when photolysis is carried out with the nucleotide analog bound to the third site. PMID- 3856873 TI - Characterization of a yeast mitochondrial promoter by deletion mutagenesis. AB - We have generated collections of mutants of the promoter for the small rRNA gene from the mitochondria of yeast deleted from either the 3' or 5' end. Plasmids containing the partially deleted promoter were assayed for their ability to direct correct transcriptional initiation in a homologous in vitro system. We find that the region required for high-efficiency promoter function lies between positions -10 and +2. Our methods detected no effect of flanking sequences on the strength of this promoter. PMID- 3856874 TI - Translational control by adenovirus: lack of virus-associated RNAI during adenovirus infection results in phosphorylation of initiation factor eIF-2 and inhibition of protein synthesis. AB - The dl331 mutant of adenovirus serotype 5 fails to produce virus-associated (VA) RNAI, and cells infected with this mutant do not synthesize proteins efficiently at late times in infection. The translational defect occurs at the level of polypeptide chain initiation, and cell-free extracts prepared from dl331-infected cells exhibit the defect observed in vivo. Addition of either eukaryotic initiation factor 2 (eIF-2) or guanine nucleotide exchange factor (GEF) to these cell-free extracts restores translational activity, with GEF functioning more efficiently in this regard. These results suggest that cells infected with the dl331 mutant develop a translational block at the level of GEF-catalyzed guanine nucleotide exchange and that this block is most likely established through phosphorylation of the alpha subunit of eIF-2. In the present investigation we show that endogenous HeLa cell GEF activity is significantly reduced in cells infected with the dl331 mutant. Further, in contrast to cells infected with wild type serotype 2 adenovirus, dl331-infected cells contain increased eIF-2 alpha kinase activity. These results indicate that VA RNAI plays a role in suppressing eIF-2 alpha kinase activity during adenovirus infection of HeLa cells. PMID- 3856875 TI - A 20-kDa protein associated with the murine T-cell antigen receptor is phosphorylated in response to activation by antigen or concanavalin A. AB - Antigen or concanavalin A activation of a murine T-cell hybrid specific for pigeon cytochrome c and restricted to the Ek alpha:Ek beta immune response associated (Ia) molecule resulted in phosphorylation of a 20-kDa protein that was specifically coprecipitated by a monoclonal antibody binding the T-cell antigen receptor. There was no evidence for phosphorylation of the antigen receptor itself. The phosphorylation of the 20-kDa polypeptide was dependent on the concentration of antigen or lectin used to activate the T-cell hybrid and reached a maximum 40 min after the addition of antigen. Moreover, the phosphorylation induced by antigen in the presence of Ia molecule-bearing B cells was specifically blocked by the addition of appropriate anti-Ia molecule monoclonal antibodies. The 20-kDa protein was also radioiodinated with a hydrophobic photoactivatable labeling reagent. The amount of iodinated 20-kDa protein immunoprecipitable with the anti-receptor antibody did not increase with T-cell activation, indicating that the phosphorylation occurred on a molecule that was constitutively associated with the antigen receptor. Concanavalin A also induced phosphorylation of a 20-kDa polypeptide in a second antigen-specific major histocompatibility complex-restricted T-cell hybrid. Again, the phosphorylated polypeptide was precipitated only by a monoclonal antibody specific for the antigen receptor on this hybrid. Thus, the antigen or concanavalin A-induced activation of T-cell hybrids results in the rapid phosphorylation of a 20-kDa protein that is associated with the T-cell antigen receptor. PMID- 3856876 TI - Chromatin structure around the c-myc gene in Burkitt lymphomas with upstream and downstream translocation points. AB - Burkitt lymphoma cells seem to have abnormal c-myc gene activity resulting from chromosomal translocation. We have examined the consequences of translocation on putative control sequences near to the c-myc gene by DNase I hypersensitivity mapping of chromatin. There is no detectable difference in the pattern of hypersensitivity (compared with the actively transcribed c-myc gene of lymphoblastoid cells) in Burkitt lymphoma cells where the translocation point occurs at a considerable distance upstream or downstream of c-myc. When the translocation occurs near the 5' end of the c-myc gene, resulting in loss of hypersensitive sites, those that remain show the same sensitivity as in lymphoblastoid cell lines. We conclude that translocation has little general effect on the usual pattern of hypersensitive sites near to the c-myc gene but new sites can be observed in some cases in the immunoglobulin region near to the breakpoint. These may be sites normally involved in immunoglobulin gene transcription and may exert a subtle effect on the translocated c-myc gene. PMID- 3856877 TI - L1 sequences in HeLa extrachromosomal circular DNA: evidence for circularization by homologous recombination. AB - Subcloned probes of the L1 family of repetitive elements were used to isolate L1 carrying clones from a plasmid library of HeLa cell extrachromosomal circular DNA. One clone was analyzed in detail by restriction mapping, cross-hybridization to L1 probes, and base sequence analysis. In addition to approximately the 3' half of a full-sized L1 element, this clone carried 390 base pairs of non-L1 sequence that is single copy in the HeLa genome. A HeLa genomic clone of this unique chromosomal region was isolated and the sequence organization of the circle clone was compared with the linear chromosomal region from which it was ultimately derived. We discuss possible mechanisms of circular DNA formation and propose homologous intrachromosomal recombination between 9-base-pair direct repeats to be most likely in this case. PMID- 3856878 TI - Evidence for unpredicted transmembrane domains in acetylcholine receptor subunits. AB - Two monoclonal antibodies (mAbs 236 and 237) against a synthetic peptide composed of the same amino acid residues as the sequence 152-167 of the alpha subunit of the acetylcholine receptor were obtained, and their crossreaction with the synthetic peptide, alpha subunit, and solubilized receptor was demonstrated. Crossreaction with the synthetic peptide alpha 159-169 was less by a factor of 10(4), suggesting that the mAbs bind primarily to the sequence alpha 152-159. Cholinergic ligands did not inhibit mAb binding. No crossreaction was observed with the receptor in native membranes, but the mAbs could bind to receptor reconstituted into liposomes in which 50% of the receptors have their cytoplasmic surface oriented outside. When native membranes were permeabilized with saponin, mAbs directed against cytoplasmic determinants of the receptor could bind to them, but mAbs 236 and 237 could not. However, after treatments that removed peripheral proteins from the cytoplasmic surface, binding of both mAbs was observed. Further evidence for the cytoplasmic localization of this sequence was provided by observation of partial competition for binding between mAbs 236 and 237 and mAbs previously demonstrated to bind to the cytoplasmic surface of the receptor. To account for these findings, a model for the organization of the polypeptide chains in receptor subunits is proposed that has a total of seven transmembrane domains in each subunit, two of which are amphipathic and one of which is not alpha-helical. PMID- 3856879 TI - Brain-specific polypeptide 1B236 exists in multiple molecular forms. AB - The COOH-terminal amino acid sequence of the rat brain-specific polypeptide 1B236 was previously deduced from molecular cloning and nucleotide sequence determination of its mRNA and the 1B236 protein shown to exist in the rat brain. The amino acid sequence of 1B236 contained at least three peptide sequences demarcated by pairs of basic amino acids--a structure similar to known neuropeptide and hormone precursors--which suggested that the protein might be processed in vivo to generate peptides. We have developed radioimmunoassays specific for 1B236 with antibodies against three synthetic peptides corresponding to putative cleavage products of this protein and have used these assays to define the molecular forms of 1B236 in rat brain extracts. The most abundant form is of high molecular weight (ca. 100,000) and requires detergent for solubilization; hence, it is probably membrane-bound. However, a small fraction of the high molecular weight material is soluble in the absence of detergent. In addition, several low molecular weight species are detectable in brain extracts prepared under conditions preventing proteolysis. These molecules correspond in size to two of the possible products of proteolytic processing predicted from the amino acid sequence of 1B236. The multiplicity of 1B236 forms, together with other data, suggests that this protein undergoes extensive post-translational modification, including proteolytic processing to generate peptides that may be physiologically relevant. PMID- 3856880 TI - Sex-dependent expression of mouse testosterone 16 alpha-hydroxylase (cytochrome P 450(16) alpha): cDNA cloning and pretranslational regulation. AB - By using both double-colony hybridization and an in situ immunostaining assay for transformants, 39 cDNA clones (clone p-16 alpha) encoding mouse liver microsomal testosterone 16 alpha-hydroxylase (cytochrome P-450(16) alpha) were isolated from a cDNA library constructed in the cloning vector pUC-9 with poly(A)+ RNA immunoenriched from total liver polysomes of male 129/J mice. mRNA selected by hybridization with clone p-16 alpha translated the P-450(16) alpha apoprotein in vitro. Total cellular proteins, which were prepared from immunopositive transformant Escherichia coli cells, were conjugated with Sepharose 4B. Antibody purified with the Sepharose 4B conjugate from mixed antiserum to P-450(16) alpha and P-450(15) alpha specifically inhibited testosterone 16 alpha-hydroxylase activity in microsomes. The cDNA insert of one recombinant plasmid (clone P-16 alpha-1) was 1.75 kilobases in size and contained one or more internal restriction sites for HindIII, BamHI, Bgl I, Pst I, Alu I, HinpI, and Rsa I. 32P labeled clone p-16 alpha-1 hybridized with a single mRNA (2000 bases) that was 10 times more concentrated in liver cells from male 129/J mice than in female mice. This result was consistent with the finding that poly(A)+ RNA from male mice translated 10 times as much P-450(16) alpha in vitro as did the poly(A)+ RNA from females. Thus, the predominant expression of testosterone 16 alpha-hydroxylase in male 129/J mice is regulated pretranslationally, presumably at the transcriptional level of the P-450(16) alpha gene. PMID- 3856881 TI - Molecular dynamics simulation of photodissociation of carbon monoxide from hemoglobin. AB - A molecular dynamics simulation of the photodissociation of carbon monoxide from the alpha subunit of hemoglobin is described. To initiate photodissociation, trajectories of the liganded molecule were interrupted, the iron-carbon monoxide bond was broken, and the parameters of the iron-nitrogen bonds were simultaneously altered to produce a deoxyheme conformation. Heme potential functions were used that reproduce the energies and forces for the iron out-of plane motion obtained from quantum mechanical calculations. The effect of the protein on the rate and extent of the displacement of the iron from the porphyrin plane was assessed by comparing the results with those obtained for an isolated complex of heme with imidazole and carbon monoxide. The half-time for the displacement of the iron from the porphyrin plane was found to be 50-150 fs for both the protein and the isolated complex. These results support the interpretation of optical absorption studies using 250-fs laser pulses that the iron is displaced from the porphyrin plane within 350 fs in both hemoglobin and a free heme complex in solution. PMID- 3856882 TI - Cells from an immunodeficient patient (46BR) with a defect in DNA ligation are hypomutable but hypersensitive to the induction of sister chromatid exchanges. AB - A fibroblast cell strain, 46BR, derived from an immunodeficient patient is hypersensitive to the lethal effects of a wide range of DNA-damaging agents. It is also defective in strand-break rejoining after treatment with dimethyl sulfate and UV light. The present study shows that the cells have a defect in joining Okazaki-type fragments during DNA replication, supporting the interpretation that the basic defect is in ligation of DNA strands. The baseline level of sister chromatid exchange is slightly higher than in normal cells but it does not approach that of Bloom's syndrome or dyskeratosis congenita cells. Sensitivity to the induction of sister chromatid exchange and the hypersensitivity to the lethal effects of a set of DNA-damaging agents are correlated, implying that the basic defect influences both end points in a similar manner. No 6-thioguanine-resistant mutants could be induced by either gamma- or UV-irradiation in these cells, suggesting that error-prone repair pathways for damage induced by these agents may contain a common ligation step in human cells. PMID- 3856883 TI - Synthetic pheromones that promote inter-male aggression in mice. AB - Two volatile constituents of male mouse urine, dehydro-exo-brevicomin and 2-(sec butyl)-dihydrothiazole, have been found active in bioassays of inter-male aggressive behavior. The two synthetic compounds act synergistically when added to castrated male urine but not when added to water, and they provoke fighting that is quantitatively and qualitatively comparable to that elicited by intact male urine. PMID- 3856884 TI - Suppression of tumorigenicity in hybrids of normal and oncogene-transformed CHEF cells. AB - Somatic cell hybridization experiments were carried out to determine whether normal cells have the ability to suppress the transforming effects of a defined oncogene. A nontransformed Chinese hamster embryo fibroblast cell line (CHEF/18 dm2) was used as the normal parent, and a CHEF/18 transfectant carrying the human mutant c-Ha-ras (EJ) oncogene was used as the tumorigenic parent. Selected hybrids (L318 cell lines) were assayed for the presence of EJ DNA, for the p21 product of the c-Ha-ras gene, and for various indices of cell transformation. These hybrids exhibited a fibroblastic morphology similar to the normal parent, although they contained the EJ gene and expressed its p21 protein product at levels comparable with the transformed parent. They had a reduced capacity for anchorage-independent growth (plating efficiency in methylcellulose of less than 0.3-13%, as compared with greater than 90% for the transformed parent) and decreased tumor-forming ability in athymic mice. These findings show that normal CHEF/18 cells contain suppressor genes capable of inhibiting expression of the transformed phenotype, and tumor-forming ability, in the presence of an activated EJ oncogene. PMID- 3856885 TI - Evidence for linear response for the induction of mutations in human cells by x ray exposures below 10 rads. AB - The induction of 6-thioguanine resistance (6TGR) was studied in continuous human lymphoblast cultures exposed to daily x-ray doses of 1, 2.5, 5, or 10 rads (1 rad = 0.01 gray) for periods up to 1 month. Samples were taken every 5 days for determinations of induced mutation frequency. Cells receiving daily doses of 1-10 rads showed a mutation frequency of 0.069 X 10(-6) 6TGR cell per rad, virtually identical to the value of 0.062 X 10(-6) 6TGR cell per rad determined for lymphoblasts receiving the same total dose of radiation in a single acute exposure. The effects of small daily fractions were additive, suggesting that doses as small as 1 rad are mutagenic in human lymphoblasts. Similar results were observed when resistance to trifluorothymidine, indicative of thymidine kinase deficiency, was used as a mutational marker. When 6TGR frequency was plotted against days of irradiation, a positive linear slope was observed for all dose groups. The values of these slopes were plotted against x-ray dose in rads/day to construct a dose-response relationship for 1-10 rads. A linear increase in mutation frequency was observed over this dose range, with no apparent threshold. The slope of this linear increase was 0.060 X 10(-6) 6TGR cell per rad. These results suggest that, for human lymphoblasts, the mutagenic risk of low doses of x-rays can be accurately estimated by linear extrapolation from high-dose effects. PMID- 3856886 TI - One hundred base pairs of 5' flanking sequence of a vaccinia virus late gene are sufficient to temporally regulate late transcription. AB - A vaccinia virus late gene coding for a major structural polypeptide of 11 kDa was sequenced. Although the 5' flanking gene region is very A+T rich, it shows little homology either to the corresponding region of vaccinia early genes or to consensus sequences characteristic of most eukaryotic genes. Three DNA fragments (100, 200, and 500 base pairs, respectively), derived from the flanking region and including the late gene mRNA start site, were inserted into the coding sequence of the vaccinia virus thymidine kinase (TK) early gene by homologous in vivo recombination. Recombinants were selected on the basis of their TK- phenotype. Cells were infected with the recombinant viruses and RNA was isolated at 1-hr intervals. Transcripts initiating either from the TK early promoter, or from the late gene promoter at its authentic position, or from the translocated late gene promoters within the early gene were detected by nuclease S1 mapping. Early after infection, only transcripts from the TK early promoter were detected. Later in infection, however, transcripts were also initiated from the translocated late promoters. This RNA appeared at the same time and in similar quantities as the RNA from the late promoter at its authentic position. No quantitative differences in promoter efficiency between the 100-, 200-, and 500 base-pair insertions were observed. We conclude that all necessary signals for correct regulation of late-gene expression reside within only 100 base pairs of 5' flanking sequence. PMID- 3856887 TI - Prenatal expression of a lethal genetic defect in carbohydrate metabolism in mice. AB - Mouse fetuses homozygous for the lethal cab (cardiac abnormal) mutation are characterized by pleiotropic effects that lead to immediate postnatal death. Mutant fetuses have only 4% of the normal amount of hepatic glycogen and 39% of the normal cardiac glycogen reserve, coupled with lower specific activities of glycogen synthase and phosphorylase. Analysis with the periodic acid-Schiff reagent histochemical stain demonstrated that cab homozygotes also have reduced amounts of structural polysaccharides. One of the most distinctive mutant phenotypic traits is severe prenatal hypoglycemia, with average (+/-SEM) plasma glucose concentrations of 0.35 +/- 0.14 mM in late fetuses compared to 3.47 +/- 0.69 mM in normal littermates. Compromise of glucose transport from dam to fetus or altered cellular glucose utilization was considered as a possible basis for the low extracellular and intracellular (hepatic) levels of glucose in mutants. Transport of the glucose analogue alpha-methyl[14C]glucoside by the placenta of cab homozygotes is normal. However, metabolism of [14C]glucose by mutant cells yields only 20% of the normal amount of 14CO2. This reduced efficiency of glucose metabolism is correlated with lower ATP concentrations in mutant organs. Aberrant glucose utilization may account for the pleiotropic features of the cab syndrome. PMID- 3856888 TI - Isolation and analysis of cDNA clones expressing human lupus La antigen. AB - Several cDNA clones of the La antigen recognized by certain lupus autoantibodies were isolated from lambda gt11 expression libraries made from human liver. Recombinant clones were used to hybrid-select HeLa cell mRNA that was subsequently translated in vitro into a single protein species that comigrated with HeLa cell La protein. The in vitro translated protein was reactive with anti La patient sera and was identical to the authentic La protein by peptide mapping. By analyzing overlapping cDNA clones, we mapped an antigenic site of La protein at the terminal 12% of the carboxyl end of the molecule. Within this region we identified a unique decapeptide of high hydrophilicity that may constitute a La antigenic determinant. We further demonstrated that the La antigen expressed from the recombinant clones can be used in a definitive enzyme-linked assay (ELISA) for the classification of sera from patients with systemic lupus erythematosus. PMID- 3856889 TI - In vivo solvent-suppressed localized hydrogen nuclear magnetic resonance spectroscopy: a window to metabolism? AB - Solvent-suppression NMR techniques are combined with a pulsed magnetic field gradient and surface coil detection method of spatial localization. The result is a technique that enables observation of metabolites in the hydrogen (1H) NMR chemical-shift spectra from preselected disk-shaped volumes of biological tissue in vivo. Localized spectra are recorded from the normal human brain and forearm and from a dog in acquisition periods of 2 s using a 1.5-T imaging/spectroscopy system. This is several hundred-fold faster than acquiring similar state-of-the art 31P NMR spectra of brain metabolites in vivo. Spectroscopy experiments are followed by conventional surface coil imaging sequences to precisely define the selected volume. Contamination of spectra by lipid resonances is a problem. PMID- 3856890 TI - Alkylating agent resistance: in vitro studies with human cell lines. AB - Development of in vitro resistance to HN2 (also called mustargen or mechlorethamine hydrochloride), N,N'-bis(2-chloroethyl)-N-nitrosourea (BCNU), and cisplatin [cis-diamminedichloroplatinum(II)] was achieved in two human cell lines, the Raji/Burkitt lymphoma and a squamous cell carcinoma of the tongue. A 10- to 20-fold increase in resistance relative to the parental line was achieved in 3-4 months of continuous selection pressure. At this time, further increase in selection pressure resulted in cell death, while removal of drug led to rapid loss of resistance. However, by holding selection pressure constant over 8-12 months, semistable clones ranging in resistance up to 8- to 12-fold were obtained. The half-life for resistance loss upon removal of drug was 2-3 months. In the presence of intermittent low concentrations of the alkylating agent, resistance has been maintained in excess of 9 months. With one exception, the growth kinetics of the resistant clones were slightly slower than those of the parental lines. Cross-resistance studies were performed against HN2, BCNU, cisplatin, phenylalanine mustard, and hydroperoxycyclophosphamide. There was, in general, a lack of cross-resistance. We conclude that stable resistance to alkylating agents is produced with difficulty. We propose that these semistable cloned human tumor lines represent clinically relevant models for the study of alkylating agent resistance and that the cross-resistance patterns among these cells have important therapeutic and mechanistic implications. PMID- 3856891 TI - Laminin is associated with the "neurite outgrowth-promoting factors" found in conditioned media. AB - Conditioned media (CMs) from many cell types contain a factor that can adsorb to a polycationic substratum and cause neurons plated on that substratum to extend neurites rapidly and profusely. The extracellular matrix glycoprotein laminin, when bound to a substratum, elicits a similar response by neurons. In this report, six CMs that contain a "neurite outgrowth-promoting factor" were studied. Immunoprecipitation with affinity-purified anti-laminin antibodies demonstrated that laminin is present in all of them, and when it was selectively removed, there was a corresponding loss of neurite outgrowth-promoting activity in each CM. Antibodies to purified laminin failed, however, to block the outgrowth promoting activity of five of the CMs tested, even though these antibodies blocked the outgrowth-promoting activity of purified laminin in the same assay. This result could reflect differences in amino acid sequence or protein modification between CM-derived laminin and the purified laminin used in generating antibodies. Alternatively, it could reflect the fact that other molecules bind to laminin in CMs and could interfere with the binding of antibodies to sites on laminin that are important for biological activity. PMID- 3856892 TI - Signal enhancement in distal cortical dendrites by means of interactions between active dendritic spines. AB - Pyramidal neurons in the cerebral cortex characteristically give rise to an apical dendrite, whose distal dendritic branches in layer I are covered with spines. These spines are known to be sites of synaptic connections, but the physiological properties of the spines and the functional significance of their responses are still largely unknown. The main function attributed thus far to these synaptic responses, situated at a great distance from the neuronal cell body, is slow background modulation of impulse output in the axon. In pursuing computer simulation analysis of electrical properties of dendrites, we have obtained results suggesting interactions between distal dendritic spines. If the heads of dendritic spines have excitable membrane properties, the spread of current from one or several spines could bring adjacent spines to their thresholds for impulse generation. This could give rise to a sequence of spine head action potentials, representing a saltatory propagation, from one or more excitable spine heads to nearby excitable spine heads, in the distal dendritic branches. Both the amplification due to several spine action potentials and the possibility of propagation into more proximal branches would increase the efficacy of distal synaptic inputs. Because of nonlinear dependence upon several modifiable parameters (such as spine stem resistance and membrane excitability) and upon the spatio-temporal pattern of synaptic input, such contingent synaptic enhancement would be particularly relevant to cortical functions underlying information processing and to plasticity underlying learning and memory. PMID- 3856893 TI - Effects of prostaglandin E1 (PGE1) on estradiol-17 beta induced luteolysis in the nonpregnant ewe. AB - Nonpregnant ewes were assigned as they came into estrus to one of the following randomized treatment groups: 1) Vehicle (1 ml corn oil) + Vehicle (buffer), 2) Estradiol-17 beta + Vehicle (buffer) or Estradiol-17 beta + PGE1 in buffer. Ewes were unilaterally ovariectomized on day 8 postestrus and an intrauterine cannula was installed in the uterine horn adjacent to the remaining luteal-bearing ovary. Buffer of PGE 1 (500 micrograms) in buffer was infused intrauterine every 4 hours from day 8 through day 15. Luteolysis was initiated by giving an intramuscular injection of estradiol-17 beta (500 micrograms) on days 9 and 10. Chronic intrauterine infusions of PGE1 maintained jugular progesterone through day 15 and weights of corpora lutea and progesterone in corpora lutea on day 15 although luteolysis was initiated by estradiol. It is concluded that chronic intrauterine infusions of PGE1 can prevent an estrogen-induced premature luteolysis. PMID- 3856894 TI - Platelet thromboxane synthesizing activity in non-insulin-dependent diabetes: correlation with diabetic retinopathy and diabetic treatment. AB - Since elevated thromboxane A2 synthesis could be expected to lead to microvascular injury in diabetic patients, it is important to determine the relationship between thromboxane A2 synthesis and diabetic microvascular complications. In the present study, the activity of thromboxane A2 synthesis in platelets was assessed in 57 Type 2 (non-insulin-dependent) diabetic patients by measuring the conversion of exogenously added 14C-arachidonic acid into 14C thromboxane B2. The activity of thromboxane synthesis was significantly higher in diabetic patients than in 16 age-matched control subjects (2.61 +/- 0.07 vs 1.95 +/- 0.12 microgram . 10(9) platelets-1 . 3 min-1, respectively, p less than 0.001). When the diabetic patients were divided into three groups (nil, background, and proliferative retinopathy) on the basis of severity of diabetic retinopathy, there was a trend to increased thromboxane synthesizing activity as diabetic retinopathy develops. However, no statistically significant changes were demonstrated among these three groups. In the diabetic patients, a positive correlation was found between thromboxane synthesizing activities and glycosylated hemoglobin values (biochemical indicator of long-term glycemic control), but not between the activities and plasma glucose levels. To ascertain the effect of desirable diabetic treatment on thromboxane synthesizing activity in platelets, 9 newly diagnosed patients and 6 poorly controlled patients were examined. During treatment, all patients had declining plasma glucose and glycosylated hemoglobin levels. Thromboxane synthesizing activities in 6 patients treated by insulin decreased significantly during treatment (3.16 +/- 0.17 to 2.49 +/- 0.22 microgram . 10(9) platelets-1 .3 min-1, p less than 0.01), but 9 diabetic patients treated by diet or sulphonylureas still maintained their elevated thromboxane synthesizing activity levels (2.76 +/- 0.24 to 2.66 +/- 0.25 microgram . 10(9) platelets-1 .3 min-1,NS). These results suggest that the increased thromboxane synthesizing enzyme system is involved in the abnormal platelet function in diabetes independently of diabetic retinopathy, and that appropriate metabolic control using insulin might be successful in lowering the increased thromboxane synthesizing activity. PMID- 3856895 TI - Differential hemodynamic effects of leukotriene D4 in anesthetized rats: evaluation by directional pulsed Doppler technique. AB - Leukotriene D4 (LTD4) is the major constituent of slow-reacting substance of anaphylaxis (SRS-A). Cardiovascular depression and hypotensive shock represent the major manifestations that attend systemic anaphylaxis. To further evaluate the hemodynamic effects of LTD4, we measured blood pressure (BP), heart rate (HR) and blood flow (BF) (directional pulsed Doppler flowmeter) to different vascular beds (hindquarter, mesenteric and renal) of the urethane-anesthetized rat. LTD4 (3, 10 and 30 micrograms/kg, i.v.) caused a dose-dependent increase in BP: 15 +/- 3, 20 +/- 4 and 24 +/- 2 mm Hg, respectively, which was maximum after 2 min and returned to control level at 10 min; HR was not significantly altered. BF to different vascular beds was differentially altered: mesenteric (-59%) greater than hindquarter (-38%) greater than renal (-10%). Vascular resistance (VR) increased by 195, 85 and 40% in mesenteric, hindquarter and renal beds, respectively. Thyrotropin-releasing hormone (TRH) (2-5 mg/kg, i.v.) injected after LTD4 increased BP, reversed the decrease in BF and the increase in VR in the mesenteric and hindquarter vascular beds. These data suggest that LTD4 receptors are unevenly distributed in various vascular beds and that the splanchnic area is particularly vulnerable to anaphylaxis-induced ischemia. Furthermore, Thyrotropin Releasing Hormone (TRH) might be useful to antagonize the hemodynamic consequences mediated by SRS-A or leukotriene. PMID- 3856896 TI - The role of prostaglandin E2 in seminal immunosuppression. AB - Seminal plasma, which has high antigenic potential and the capacity to induce immunosuppression, has been incriminated as a possible factor in the acquired immunodeficiency syndrome (AIDS). Seminal plasma contains high concentrations of prostaglandins, which are capable of inducing immunosuppression. As prostaglandin E2 is noted for its immunosuppressive actions, we designed this study to determine whether this prostaglandin is responsible for seminal immunosuppression. Diluted and undiluted samples of semen from 5 heterosexual donors induced a significant suppression of phytohaemagglutinin-stimulated thymidine incorporation into lymphocytes. However, when the prostaglandin E2 levels of the semen samples were extrapolated to a standard prostaglandin E2 dose response curve, the estimated values did not agree with the prostaglandin E2 levels. We conclude that prostaglandin E2 may contribute to seminal immunosuppression, but is not solely responsible for it. PMID- 3856897 TI - A difference in prostaglandin E2 synthesis between cancer cells metastasizing into liver and kidney. PMID- 3856898 TI - Effect of fractionation and rate of radiation dose on human leukemic cells, HL 60. AB - The capacity of HL-60 cells, human acute promyelocytic leukemic cells established in culture, to repair sublethal radiation damage was estimated from the response of the cells to fractionated irradiation or to a single irradiation at different dose rates. The HL-60 cells grown as a suspension culture in RPMI 1640 medium supplemented with 10% calf serum and antibiotics showed a cloning efficiency of about 0.46 in an agar culture bed. After exposure of cells to a single dose of X rays at a dose rate of 78 rad/min, the survival curve was characterized by n = 2.5, Dq = 80 rad, and D0 = 83.2 rad. Split-dose studies demonstrated that the cells were able to repair a substantial portion of sublethal radiation damage in 2 hr. The response of the cells to irradiation at different dose rates decreased with a decrease in the dose rates, which could be attributed to repair of sublethal radiation damage. The radiation response of leukemic cells is only one of the many factors which affect the clinical outcome of total-body irradiation (TBI) followed by bone marrow transplantation. Nevertheless, the possibility that some of the malignant hemopoietic cells, if not all, may possess a substantial capacity to repair sublethal radiation damage should not be underestimated in planning total-body irradiation followed by bone marrow transplantation. PMID- 3856899 TI - Effects of synthetic leukotriene D-4 on the local regulation of blood flow in human subcutaneous tissue. AB - Prostaglandin E-1 and E-2 acts as vasodilators partly through inhibition of sympathetic nerves and partly through a direct action on smooth muscle. To elucidate the mechanisms of LTD-4 induced vasodilation, the vascular smooth muscle dependent auto-regulation of blood flow and the sympathetic reflex mechanism of the "vasoconstrictor reflex" was investigated in humans. Blood flow was measured in subcutaneous tissue after injection of 133-Xenon 1) alone, 2) mixed with lidocaine 20 mg/ml for sympathetic blockade, 3) mixed with PGE-2 0.1 ug/ml and 4) mixed with LTD-4 in concentrations of 5 and 20 microM. Blood flow was kept constant during elevation by 20 cm above heart level (preserved autoregulation) except after injection of PGE-2 and LTD-4 20 microM where a significant decrease was observed (defective smooth muscle function). During lowering by 45 cm, a decrease in blood flow by 50% was observed in experiment 1. This response was blocked by lidocaine and PGE-2, partially blocked by LTD-4 20 microM but unaffected by LTD 5 microM. LTD-4 affects vascular smooth muscle function but does not affect sympathetic reflexes in concentrations which does not have a direct smooth muscle action. PMID- 3856900 TI - Effects of prostaglandin E1 or E2 (PGE1; PGE2) on luteal function and binding of luteinizing hormone in nonpregnant ewes. AB - Two studies were conducted to determine the effects of PGE1 or PGE2 on luteal function and binding of luteinizing hormone (LH) to luteal cell membranes in nonpregnant ewes. In Study I, ewes (n=5 per group) received an injection of vehicle (VEH) or 333 micrograms of PGE1 or PGE2 into the tissue surrounding the ovarian vascular pedicle (intrapedicle) on day 7 postestrus. Systemic progesterone concentrations of PGE1-treated ewes were greater (P less than 0.01) than those of VEH-treated ewes at 24 and 48 hr after injection. For PGE2-treated ewes, progesterone concentrations were greater (P less than 0.01) than for VEH treated ewes only at 24 hr. Neither PGE1 nor PGE2 affected luteal weights or LH binding capacity at 48 hr. Treatment with PGE1, however, increased (P less than 0.10) endogenously bound LH at this time. In Study II, ewes (n=5 per group) received an intrapedicle injection of VEH, or 10 mg of PGE1 or PGE2 on day 8 postestrus. Systemic progesterone concentrations in PGE1-treated ewes were less (P less than 0.01) than for VEH-treated ewes at 24 hr, but by 72 hr were not different from those of VEH-treated ewes. For PGE2-treated ewes, systemic progesterone declined steadily to reach low values by 72 hr. Prostaglandin E2 had no effect on luteal binding of LH at 72 hr, whereas PGE1 increased (P less than 0.05) LH binding capacity and endogenously bound LH. Although PGE2 had no apparent affect on luteal binding of LH in these studies, PGE1 may enhance the function of ovine corpora lutea by stimulating an increase in their binding of LH and capacity to bind LH when the CL receives a luteolytic signal. PMID- 3856901 TI - Effects of prostaglandin E2 (PGE2) on estradiol-17 beta-induced luteolysis in the nonpregnant ewe. AB - Fifteen ewes were assigned as they came into estrus to the following randomized treatment groups: 1) Vehicle (1 ml corn oil + vehicle Na2CO3 buffer), 2) Estradiol-17 beta + vehicle and 3) Estradiol-17 beta + PGE2 (500 micrograms) in Na2CO3 buffer (5 ewes/treatment group). Prostaglandin E2 was given through an intrauterine cannula every four hours from days 8 through 15 postestrus. PGE2 prevented a luteolytic dose of estradiol-17 beta given on days 9 and 10 from causing a precocious luteolysis. PGE2 maintained concentrations of progesterone in peripheral blood (days 8 through 15) and weights and concentrations of progesterone in corpora lutea on day 15 postestrus of ewes receiving estradiol-17 beta. It is concluded that chronic intrauterine infusions of PGE2 can prevent an estradiol-17 beta-induced premature luteolysis. PMID- 3856902 TI - Prostaglandins involvement in the formation of luteinized unruptured follicles in the cyclic female rat. AB - The purpose of this investigation was to study the role played by prostaglandins in advanced ovulation and in the formation of luteinized unruptured follicles (LUF) in cyclic female rats. Dose related effects on ovulation were observed in rats given LH on diestrus 2 at 16.30. A significant positive correlation was observed between the number of postovulatory corpora lutea (POCL) and the increasing doses of LH. By contrast the number of LUF was negatively correlated with LH. Indomethacin treatment by 6h30 after administration of an ovulatory LH dose significantly increased the occurrence of LUF at the expense of POCL. Conversely PGF2 alpha when administered by 6h30 after a subovulatory LH stimulation enhanced in a dose dependent manner the number of POCL with respect to the LH treated controls. Under a similar treatment with a subovulatory dose of LH, PGE2 remained without ovulatory effects. The mechanisms of the formation of LUF are discussed on the basis of these results. PMID- 3856903 TI - Plasma levels of 13,14-dihydro-15-keto PGE2 after vaginal application of a new PGE2 film. AB - To determine the release and absorption profile of prostaglandin E2 from a new vaginal film formulation containing 850 micrograms PGE2, serial plasma levels of 13,14-dihydro-15-keto PGE2 were measured by radioimmunoassay in pregnant women between 16 and 18 weeks gestation. A control group, using placebo vaginal film was included in the study. There was a somewhat uniform increase in the plasma levels of the PGE2 metabolite, reaching peak levels between 4 and 6 hours after application of the film. The findings suggest that this drug formulation could be used clinically when slow constant release of the prostaglandin is required over a period of hours such as in pre-induction cervical ripening of term pregnancy. PMID- 3856904 TI - Menstrual-PGF2 alpha, PGE2 and TXA2 in normal and dysmenorrheic women and their temporal relationship to dysmenorrhea. AB - Although it has been demonstrated that primary dysmenorrhea is associated with elevated levels of PGF2 alpha in the menstrual fluid, little is actually known of the menstrual-PG profiles of either dysmenorrheic or normal women. In this study, menstrual fluid from normal and dysmenorrheic women was collected from tampons and extracted for PG-like substances. The PGF2 alpha, PGE2 and TXA2 content was analyzed by RIA. This study demonstrates that dysmenorrheics have significantly higher levels/concentrations of menstrual-PGF2 alpha and PGE2 than do normal women, and that there is no difference in the menstrual-PGF2 alpha : PGE2 ratio between the two groups. Also, there is no significant difference in the amount/concentration of menstrual-thromboxane between dysmenorrheic and normal women. Of the parameters considered, the levels/-concentrations of menstrual-PGF2 alpha, PGE2 and TXA2, dysmenorrheic pain correlates best with the rate of menstrual-PGF2 alpha release. PMID- 3856905 TI - Synthesis and biological properties of 16(S)-amino-PGF2 alpha methyl ester. AB - A synthesis of 16-amino-derivatives of PGF2 alpha is reported. Introduction of an amino group into position 16 of PGF2 alpha has decreased the sensitivity of the compound to metabolic degradation. 16(S)-amino-PGF2 alpha methyl ester shows high abortifacient activity with reduced diarrhoeic side effect. PMID- 3856907 TI - Ultrastructural and histochemical observations regarding the ovarian follicles of the amago salmon (Oncorhynchus rhodurus). AB - Pre- and postovulatory ovarian follicles of the amago salmon were investigated with special consideration given to the steroid production site. In the preovulatory specimens, the special thecal cells contained abundant mitochondria and smooth endoplasmic reticulum, as in the case of other steroid-producing cells, while the granulosa cells developed rough endoplasmic reticulum like protein-secreting cells. Remarkably ultrastructural changes occurred in the granulosa and the special thecal cells during the oocyte maturation stage; dilation of rough endoplasmic reticulum in the former cell and further development of smooth endoplasmic reticulum in the latter one. Histochemical reactions of delta 5-3 beta-hydroxysteroid dehydrogenase (3 beta-HSD) activity were only positive in the special thecal cells of the postovulatory follicles. These results strongly suggest that the special thecal cells are the major sites of estrogen precursor synthesis in the amago salmon ovary. PMID- 3856906 TI - Reduction of testicular testosterone levels in rats by prostaglandin E2. AB - The effect of intratesticular administration of prostaglandin (PG) E2, PGF2 alpha and PGD2 on rat testes testosterone levels were studied. The intratesticular administration of PGE2 or PGD2 markedly decreased the testicular testosterone levels in rats. The decrease of testosterone concentration in rat testis was not obtained by PGF2 alpha. In the incubation experiment, PGE2 reduced the release of testosterone from fragment rat testis. These results suggest that PGE2 acts on androgen biosynthesis in rat testes. PMID- 3856909 TI - Medical manpower: how many physicians can Rhode Island absorb? PMID- 3856908 TI - [Second-trimester abortions induced by dinoprost]. AB - The authors evaluated the usefulness of prostaglandin F2 alpha in inducing second trimester abortions in two consecutive groups of patients. Progressive and fractionated intracervical instillation of 10 ml of Tylose gel containing 10 mg of Prostine F2 alpha is the least traumatic method of uterine evacuation in the majority of cases (18 out of 24 cases). Advantages of this method consist of the ease with which it can be performed, that it may be repeated on subsequent days, and that there have been no serious complications. In case of failure, the authors recommend using an intraamnionic injection (usually performed only once) of 40 mg of Prostine F2 alpha diluted in 20 ml of normal saline solution. This more involved method requires an experienced physician and ultrasonography, but is very effective (31 cases out of 3). Exceptionally, this can be repeated after a several day interval if the initial injection fails (2 out of 3). These methods avoid recourse to surgery (except in the case of uterine scarring) in the induction of second trimester abortions. PMID- 3856910 TI - The Committee on Impaired Physicians of the Rhode Island Medical Society. PMID- 3856911 TI - Family-oriented treatment of alcoholism. PMID- 3856912 TI - Overcoming barriers to identification and referral of alcoholics in a general hospital setting: one approach. PMID- 3856913 TI - [Temporomandibular dysfunction syndrome in facial dysmorphism. Surgical indications]. AB - The abnormalities of occlusion are the main reason of the T. M. J. disorders. Often minor, they may be major as encountered in the facial dysmorphoses. For that reason we were led to indicate a surgical correction of these malformations, mainly in a functionnal goal. Each of the five cases illustrates one different point of that problem. PMID- 3856914 TI - [Surgical treatment of temporomandibular joint syndromes]. AB - This analysis of replies to a questionnaire raises three questions: Is surgery indicated in the treatment of this syndrome? What are the factors on which the indication for surgery should be based? If surgery is indicated what type of operation should be performed? Complications of surgery are discussed. PMID- 3856915 TI - [Anatomical lesions of the condylar head in a case of temporomandibular joint syndrome]. AB - Radiography in a patient with this syndrome showed marked lesions in the condylar head. Histology after condylectomy showed alterations throughout the condyle with associated arthrosic and osteonecrotic lesions. Possible relations between the two processes are discussed, the extensive nature of the necrosis suggesting that this is the initial lesion. PMID- 3856916 TI - [Sequelae of condylar fractures in the experience of the department and that of medical expertise]. AB - Statistical analysis was conducted on findings in 104 cases of fractures in the condylar region and 25 patients examined to determine degree of incapacity as a result of these types of fracture. Data obtained illustrated the adverse effects of ascending ramus shortening, and the improvement obtained after surgical restoration of its height whenever this was indicated. Long-term follow up surveillance is also necessary after high subcondylar fractures with impaction of the ascending ramus because of the risk of external temporomandibular ankylosis. PMID- 3856917 TI - [Maxillofacial manifestations of acquired immunodeficiency syndrome]. AB - 46 cases of acquired immunodeficiency syndrome permit the authors to detail the particular aspects of the oral and facial lesions in AIDS. In patients at risk, a lymphadenopathic syndrome is thought to represent a prodromic phase of the illness. The authors insist upon the differences between the classic Kaposi's sarcoma and that associated with the AIDS (mean age and initial sites of tumor). One third of these sarcomas is completed by a digestive candidiasis. The review of the literature reveals squamous cell carcinoma and Burkitt's lymphoma with the AIDS. We must be aware of early diagnosis and transmission factors in the individuals at risk with tumors and opportunistic infection. PMID- 3856918 TI - [Solitary plasmocytoma of the mandible]. AB - The authors present a case of solitary bony plasmocytoma of the mandibule, with local amyloid deposition. Diagnosis was made at extemporaneous pathological examination, then confirmed by the examination of the fixed surgical sample. Immunoenzymologically the proliferation proved to be monoclonal, with secretion of kappa light chain. The patient was treated by surgical curettage and homologous cancelous bone filling, followed by 5,500 rads of electrontherapy. He was then regularly controlled during 8 years and remained free from local recurrence. All investigations in search of dissemination (Kahler disease) remained negative. PMID- 3856919 TI - [Maxillofacial localization of Burkitt's lymphoma. Apropos of 5 cases]. AB - Five children presented with a Burkitt's lymphoma localized to the maxillofacial region. The disease and its clinical manifestations are reviewed briefly, and the frequency of this tumor in Tunisia is emphasized. The Tunisian Burkitt tumor appears to be an intermediate entity between the "non-endemic" form and the African form. PMID- 3856920 TI - [Stylohyoid syndrome. Apropos of a case]. AB - Authors report a case of stylohyoid syndrome (Eagle's syndrome) caused by the curvation of the shaft of the styloid process that impigies on the internal carotid artery. Stylohyoid syndrome should be considered when inspecting the differents diagnosis of facial pain. Diagnostic work up is made from transpharyngeal styloid process palpation and X ray examinations. Amputation of the styloid process by a pharyngeal approach gives good results. PMID- 3856921 TI - [Intravascular papillary hemangioendothelioma. 4 case reports with oral localization]. AB - The authors report four cases of papillary intravascular haemangioendothelioma of P. Masson located on the mucosa of the cheek, lip or tongue. They always presented as a painless submucosal blueish nodule, more or less elevated and firm, appearing as a thrombosed angioma. As a rule, the size was less than one centimeter. Pathological examination shows an angiomatous papillary neoformation, enclosed within a swollen veinous cavity. Diagnosis is easy on an operative specimen. However, on a small biopsy specimen, a capillary angioma, or a malignant haemangioendothelioma may be more difficult to eliminate. Surgical removal, even partial, will allow complete healing. PMID- 3856923 TI - Effect of antibody preparations on glucose uptake by a cariogenic Streptococcus. AB - The effect of antisera to whole cells or cell wall components on glucose uptake by S. mutans 6715 was examined. Early stationary phase 6715 cells were treated with test serum and incubated at 37 degrees C in the presence of 14C-glucose. Samples were removed at timed intervals and measured in a liquid scintillation counter for radioactive uptake. Antisera to both whole cells and components known to be present on the surface of the cells reduced glucose uptake relative to normal serum. It is suggested that inhibition of glucose uptake may be one mechanism by which a caries vaccine may operate. PMID- 3856924 TI - Scanning electron microscopic study of Streptococcus mutans BHT lysed by lysozyme. AB - The effects of purified salivary lysozyme (HSL) and hen egg white lysozyme (HEWL) on the surface structure of Streptococcus mutans BHT were studied with the aid of scanning electron microscopy. In parallel experiments bacteriolysis was monitored by liberation of 3H-thymidine incorporated into the bacteria. Control cells maintained their shape and had intact cell walls during the experimental period. Exposure of the cells to HSL (5.0 U/ml) or HEWL (5.0 micrograms/ml) for 3 and 18 h resulted in progressive destruction of cell structure. Some cells exhibited ruptures of the cell walls on top of spherical swellings, predominantly located at the ends of the bacteria. After 18 h the majority were disrupted in the septal area leaving numerous empty cup shaped cell walls in the preparations. The findings of the electron microscopic examination were confirmed in the biochemical assay. PMID- 3856922 TI - Relationships between carbonate, sex and other macroelements in human whole enamel. AB - Enamel samples were prepared from 40 teeth and CO3, P, F, Ca, Mg and Zn concentrations were determined. The carbonate concentration was higher in women than in men (P = 0.018), otherwise no sex dependence was found. Positive correlations were found between CO3 and Mg (P = 0.001). These relations should be taken into consideration when the solubility of enamel is studied. PMID- 3856925 TI - pH and the effect of NH4Cl on human gingival fibroblasts. AB - pH variations in the range from 6.9 to 7.9 modified the growth rate of human gingival fibroblasts in culture, a pH optimum being found at 7.6-7.8. A pH dependent growth inhibition by ammonia was evident, being particularly prominent in the presence of 2 mM NH4Cl. At this concentration an effect ranging from a complete cessation of growth at pH 8.0 to an indication of a slight stimulatory effect at pH 7.2 was found. Concomitant with this amplification of the growth inhibitory effect, a state of unbalanced growth in the sense of an increased cellular protein content was induced by ammonia upon increasing the pH of the medium. The incorporation of 14C-proline into the total protein fraction decreased rapidly, particularly in the control cultures, with pH; an inhibition by ammonia being found at pH 7.0 and 7.5 with no effect at pH 7.1. Except for part of the inhibition by ammonia, changes in specific activity of 14C-proline in the cellular amino acid pool could ac count for these pH effects. Ammonia reduced the proportion of radiolabeled protein recovered as collagen both from the cells and medium at the lower pHs, whereas the only significant effect on noncollagen protein was an increased fraction being secreted at pH 7.1 in the presence of 10 mM NH4Cl. PMID- 3856926 TI - Electron probe study of human and red deer cementum and root dentin. AB - A topographical description of the concentration profiles of Ca, P, Mg, Zn, F, S, and K in human and red deer cementum and root dentin is given. The concentrations reported should be regarded as semiquantitative values. A downward slope of the Ca, P and Mg profiles toward the pulpal cavity seemed largely to correspond with the secondary dentin. Marked elevations of the Zn profiles, modest elevations of the F profiles, and in a few instances of the S profiles, toward root surface and pulpal cavity were registered. In a couple of scans a slight elevation of the K profile toward the root surface ws observed. A high degree of concordance in human and red deer teeth was ascertained. PMID- 3856927 TI - Evaluation of a simplified diagnostic aid (Oricult-N) for detection of oral candidoses. AB - The validity of a simplified diagnostic aid, Oricult-N, for detection of oral candidoses was compared with smears stained according to the periodic acid Schiff's method. Samples were taken from 80 locations in 36 patients with lesions suspected for candidal infection. There was a statistically significant correlation between the two methods (P less than 0.001). PMID- 3856928 TI - Incisor and jaw relationship in 27 persons with osteogenesis imperfecta. AB - The incisor relation and craniofacial morphology, as evaluated from lateral cephalograms, were studied in 14 women and 13 men with osteogenesis imperfecta. A negative overjet was found in one woman and five men, and for the total material a mesial basal jaw relationship was observed. Data for both women and men indicated that skeletal discrepancies had been partially compensated for by the incisor inclination. Probably, persons with osteogenesis imperfecta may be regarded as a potential high-risk group for development of malocclusion. PMID- 3856929 TI - Dose reduction by field size trimming in rotational panoramic radiography. AB - A substantial dose reduction may be obtained for patients in need of frequent retakes with rotational panoramic radiography by reducing the width and height of the film area irradiated. An electronic timer was connected to the circuit of an Orthopantomograph 5 (Siemens) whereby exposure times could easily be selected in the range 5-15 s. Vertical extracollimation was provided. With the field size reduced to encompass the developing dentition only, about 60% reduction in integral absorbed dose was obtained using standard (Siemens special) screens. With rare earth (Titan HS) screens a reduction of 85% was obtained in integral absorbed dose and absorbed doses to the thyroid gland and eye lens were reduced by 70-79% and 80-89%, respectively. The doses thus obtained were equal to or less than those reported with a single dental film in speed Group D. PMID- 3856930 TI - Cytotoxicity of corroded and non-corroded dental silver amalgams. AB - The cytotoxicity of one conventional and four non-gamma 2-amalgams was studied in a cell culture system, using the Millipore filter method. Before testing set amalgam specimens were kept in distilled water or in artificial saliva at pH 4, 5, or 7 for up to 28 wk to produce a corrosion layer on the test surface. Non corroded set amalgam specimens was also tested. None of the noncorroded, set amalgams showed any sign of surface accumulation of cytotoxic products whereas the corroded amalgams showed varying degrees of cytotoxicity. Generally, the non gamma 2-amalgams gave a more pronounced cytotoxic effect than the conventional amalgam. When the corrosion procedure was carried out at pH 7, the various non gamma 2-amalgams showed different degrees of cytotoxicity. It appears that the difference in cytotoxic effect between the non-gamma 2-amalgams and the conventional amalgam as well as the differences among the various non-gamma 2 amalgams could be related to variation in the retention of corrosion products deposited on the amalgam surface. PMID- 3856931 TI - Maximum contents of mercury in dental silver amalgams. AB - The maximum content of mercury forming intermetallic compounds has been determined in dental amalgams prepared from alloys with different copper contents. In amalgams made from alloys with silver contents less than about 42% there is a risk of occurrence of free mercury if an effective condensation technique has not been used. PMID- 3856932 TI - Enzyme activity and protein patterns as premalignant markers in mucosal biopsy specimens from the large intestine. AB - Total enzyme activity of glucose-6-phosphate dehydrogenase (G6PD) and lactate dehydrogenase (LD) was measured in homogenates of resected biopsy specimens and in endoscopic biopsy specimens. LD isoenzyme patterns were scanned by a laser technique after agarose gel electrophoresis. Examinations were performed in homogenates of premalignant lesions such as ulcerative colitis and adenomas of the colon, with normal mucosa and carcinomas as control material. Additionally, two-dimensional electrophoretic protein patterns were compared for normal mucosa, adenomas, and carcinomas of the large intestine. The mean activity of both G6PD and LD was highest in the presence of dysplasia; however, only G6PD activity seemed independent of inflammatory changes. The percentage of LD isoenzyme M monomers was significantly higher in homogenates of specimens with dysplastic changes than in specimens with only inflammatory changes. A positive correlation was found between total LD isoenzyme M monomers and LD 5 monomers for the whole material and for each of the histological subgroups of ulcerative colitis. A positive correlation between total LD activity and the percentage of LD 5 monomers was seen only for dysplastic, adenomatous, and malignant tissues. The several hundred protein spots seen on two-dimensional protein maps showed that most of the spots were common for normal mucosa, adenomas, and carcinomas, but differences were also seen. Polyps and carcinomas had strikingly similar protein patterns, different from that of normal mucosa. The results of the two dimensional protein electrophoresis lend further support to the hypothesis that polyps are precursors of carcinomas of the large intestine.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3856933 TI - The pancreatic ducts in primary biliary cirrhosis and sclerosing cholangitis. AB - Endoscopic retrograde pancreatograms were examined in a consecutive series of patients with cholestatic disease caused either by primary biliary cirrhosis (PBC) (35 patients) or by sclerosing cholangitis (SC) (38 patients). The pancreatic ducts were abnormal in three of the patients with PBC but in none with SC. Gallstone disease occurred concomitantly in the two patients with most advanced pancreatic involvement. The liver disease was classified as advanced PBC in 11 of the 35 patients. Symptoms of hepatobiliary disease were scarce in most SC patients. Eight of the 38 patients had histologically verified biliary cirrhosis. SC was associated with extensive, but most often inactive or mild, colitis in 97% (ulcerative colitis in 34 and Crohn's disease in 3 patients). Three of these patients had concomitant cholangiocarcinoma. PMID- 3856934 TI - Follow-up and prospective studies of the classification of liver disease. AB - Two hundred patients with different liver diseases were observed during a period of 6-8 years. The diagnosis at the first hospitalization was based on morphological criteria (and, in some cases, additional clinical information). In 162 of the cases an initial 'specific' diagnosis could be made. By the time of the follow-up study the diagnosis was confirmed in 73% of them. In 22 of 38 patients who were initially unclassifiable, the diagnosis was made definite by the follow-up study. Eighty-five patients were hospitalized for re-examination 6 8 years after the initial study. Several of the liver diseases initially had quite typical patterns of clinical chemical data. Allocation by discriminant analysis was therefore in good agreement with the morphological classification. The follow-up study showed that several patients with initially atypical patterns of clinical chemical results had their diagnosis changed. In 35 patients with the final diagnosis of chronic active hepatitis (CAH) or primary biliary cirrhosis (PBC), laboratory data from the last hospitalization were used for discriminant analysis with teaching data from the initial study. Ninety-seven per cent were correctly allocated, and we conclude that these patients retain recognizable patterns of laboratory results for several years, even when given immunosuppressive treatment. The potential clinical usefulness of discriminant analysis of laboratory data for differential diagnosis was evaluated by a prospective study of 65 patients with the morphological diagnosis of CAH or PBC. Correspondence with the morphological classification system was found in almost 90% of the cases. PMID- 3856935 TI - Chronic active hepatitis. Experience from a Norwegian reference hospital during a decade. AB - During the decade from 1 January 1971 to 31 December 1980. 90 hospitalized patients fulfilled the diagnostic criteria of chronic active hepatitis (CAH). An aetiological agent was identified in 13 of the patients: hepatitis B virus infection in 6 and a drug in 7. The other 77 cases were assumed to be idiopathic. The mean age at presentation was 32 years, and 66 (73%) of the patients were female. The patients have been followed up until death or until 31 December 1981. The mean observation period was 114 months. Twenty-five (28%) patients died. 19 of them of liver disease. Complications or signs of portal hypertension were observed in 62%. Of the 18 patients with upper gastrointestinal bleeding 15 had a portal-systemic shunt performed. Associated diseases in other organ systems were observed in 16 (18%) of the patients. Pronounced biochemical activity was found in 80 (89%) of the patients. Immunosuppressive therapy was started in 84 (93%), either as corticosteroids alone (40 patients) or in combination with azathioprine (44 patients). Azathioprine was later withdrawn in 29 (66%), in 6 because of side effects and in 20 because of clinical and biochemical improvement. Corticosteroids were withdrawn in 22 (26%), in 2 because of side effects and in 18 because of improvement. In 35 of the 45 patients in whom discontinuation was attempted, the treatment had to be reinstituted. Eight of the patients on combined therapy could discontinue both immunosuppressive drugs.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3856936 TI - The incidence of chronic active hepatitis in Norway. A retrospective study. AB - From all departments of internal medicine in Norway information has been collected about new cases of chronic active hepatitis (CAH) diagnosed during 1981. A questionnaire together with copies of histological examination reports and discharge summaries have been carefully examined to ensure that established diagnostic criteria were fulfilled. Of the 63 reported cases, 58 were recorded as CAH. An aetiological agent was identified in nine cases; six were HBsAg-positive, two were alcohol-induced, and one drug-induced. The other 49 cases were assumed to be idiopathic. The incidence of CAH of all causes was 1.41 per 100,000; of idiopathic CAH, 1.19 per 100,000; and of HBsAg-positive CAH, 0.15 per 100,000. The mean age was 51 years, and a third of the patients in the idiopathic group were 65 years or older at presentation. In this group about 71% of the patients had autoantibodies, and 61% had serum aminotransferase levels more than five times and 46% more than ten times the upper reference range. The proportion of the different aetiological agents was different from what has been reported in other studies. The activity of the disease, judged by the serum level of aminotransferase, was more pronounced than reported in other investigations. This may indicate that only relatively severe cases of CAH were subjected to liver biopsy. PMID- 3856937 TI - Effect of high-density lipoproteins on cholesterol efflux and esterification in lipid-enriched human skin fibroblasts. AB - The ability of high-density lipoprotein (HDL) to reduce the cholesterol content was studied in cultured fibroblasts enriched with cholesterol esters. Incubation of cholesterol-enriched cells with HDL in a final concentration of 1 g protein/l for 24 h reduced the total and esterified cholesterol content by 23% as compared with control fibroblasts incubated with albumin. Similar cholesterol efflux was obtained with HDL isolated from lecithin:cholesterol acyltransferase (LCAT) deficient plasma. The HDL3 subfraction isolated by rate-zonal ultracentrifugation contained the major part of the cholesterol-depleting effect. HDL or HDL3 decreased CoA:cholesterol acyltransferase (ACAT) activity to 5% of the level found in control fibroblasts within 8 h of incubation. These findings suggest that ACAT activity is sensitive to a pool of intracellular cholesterol, which can be mobilized by the addition of HDL to the culture medium, and that ACAT activity is a useful measure of cholesterol efflux from cultured fibroblasts. PMID- 3856938 TI - Synthesis and secretion of lipoprotein lipase by human monocyte-derived macrophages. AB - Human monocytes isolated from either defibrinated blood or buffy coat were shown to produce and secrete lipoprotein lipase during culture. The secretion occurred constitutively. Low levels of enzyme activity in the medium from freshly isolated cells increased with time of incubation, and maximal activity was attained after 9 days. The addition of heparin resulted in a substantial increase of enzyme activity in the culture medium. The optimal concentration of heparin was about 2 U/ml. The production of lipoprotein lipase was dependent on the presence of serum in the culture medium, and the optimal supplementation of serum was 25-50%. PMID- 3856939 TI - Ferrochelatase deficiency in the bone marrow in a syndrome of congenital hypochromic microcytic anemia, hyperferremia, and iron overload of the liver. AB - Two sisters had congenital hypochromic microcytic anemia with hyperferremia, heavy iron deposits in the liver, and reduced bone marrow iron. Liver ferrochelatase activity was within normal limits, but in the bone marrow ferrochelatase activity was only 20% of that in healthy controls. There were no findings suggestive of lead intoxication, sideroblastic anemia, or erythropoietic protoporphyria. PMID- 3856940 TI - Collagenous colitis. A clinical, histological, and ultrastructural study. AB - Eleven patients with so-called collagenous colitis are described and the literature reviewed. The disease presents with persisting watery diarrhoea in middle-aged subjects, predominantly women. The fairly uniform clinical features of abdominal discomfort are suggestive of the irritable bowel syndrome. The morphological changes in colorectal biopsy specimens are diagnostic, showing an excessive intercryptal subepithelial collagen deposition throughout the large bowel. Associated hyperplasia, degeneration, and desquamation are seen in the intercryptal epithelial cells and a mild inflammatory response in the lamina propria. A comparable collagenization has not been demonstrated in other disorders, but otherwise the changes demonstrated histologically and ultrastructurally are of a quantitative nature. Collagenous colitis is unrelated to other diseases and the cause unknown. It has either a benign, continuous course or exacerbations and remissions. Loperamide relieved diarrhoea in five of six patients. The collagen deposition seems to be slowly progressive, but clinical and histopathological resolution may occasionally be seen. PMID- 3856941 TI - Acquired immunodeficiency syndrome (AIDS). Clinical, immunological, pathological, and microbiological studies of the first case diagnosed in Norway. AB - The first case of acquired immunodeficiency syndrome (AIDS) in Norway, diagnosed in January 1983, is presented, with results of clinical, immunological, and microbiological studies and the results of autopsy. Immunological studies showed several immunological abnormalities, including a profound deficiency of the T cell system of the type usually associated with AIDS. During the 11 months of symptomatic disease the patient had a series of opportunistic infections, including recurrent candida esophagitis, probable Pneumocystis carinii pneumonia, and severe and recurrent perioral Herpes simplex virus infection. During the last months he had increasing signs and symptoms of disseminated cytomegalovirus infection, which was probably the major cause of death, as revealed by autopsy. Autopsy also showed the presence of disseminated infection with a slowly growing, so far unclassified Mycobacterium species, and signs of a focal aspergillus pneumonia. PMID- 3856942 TI - [Salivary gland infarction--a diagnostic case for pathologists and clinicians]. PMID- 3856943 TI - [Incidence and causes of dental caries in young children--results of a survey in German-speaking Switzerland]. PMID- 3856944 TI - [Proximal caries in students of the school dental clinic in Aarau]. PMID- 3856945 TI - [Undermining resorption of the 2d deciduous molar by the permanent molars as a microsymptom of hereditary dentition disorders]. PMID- 3856946 TI - [The phenomenon of culture: its significance, its development, its goal, its relationship to professional activities]. PMID- 3856947 TI - [Hematopoietic foci as a cause of cystoid mandibular lesions]. PMID- 3856948 TI - Myocardial infarction in young adults--etiology, prognosis, and follow-up. PMID- 3856949 TI - The American health care industry: where we've been, where we're going. PMID- 3856950 TI - Appendiceal intussusception. PMID- 3856951 TI - Gene therapy guidelines revised. PMID- 3856952 TI - Medical consequences of eating disorders. AB - While much has appeared in the recent literature about various psychotherapeutic techniques used to treat eating disorders, little attention has been paid to the medical complications. Prominent among these are heart damage, failure of the endocrine system, infarction and perforation of the stomach after acute dilatation, multiple suicide attempts, aspiration, injury or rupture of the esophagus, severe bleeding per rectum causing anemia due to laxative abuse, hypokalemic nephropathy, depressive disorders due to starvation, and severe erosion of the enamel of the teeth resulting in extensive loss of teeth. I decry the sudden trend of nonmedically trained personnel rushing into the treatment of eating disorders, particularly anorexia nervosa and bulimia, because they know little about the possibly fatal consequences of their failure to attend to some of these medical phenomena. I also note with grave concern the identification of the medical profession with the "thin is better" mentality of our culture, which blinds them to the serious medical consequences of eating disorders. PMID- 3856953 TI - Isolation and genetic characterization of human KB cell lines resistant to multiple drugs. AB - Human KB cell lines resistant to high levels of colchicine were isolated by several successive single-step selections. Most of these selection steps resulted in cross-resistance to vincristine, vinblastine, adriamycin, actinomycin D, and puromycin; however, at the highest levels of colchicine resistance, increased cross-resistance to other drugs was not observed. There was no major change in protein synthesis or alteration in protein phosphorylation or [14C]glucosamine labeling patterns accompanying the development of multiple drug resistance as measured by analysis of metabolically labeled proteins on SDS gels. Cell-cell hybridization experiments showed that the colchicine-resistant and multiple drug resistant phenotypes were incompletely dominant. In addition, colchicine resistance was found to segregate independently from resistance to other drugs in one somatic cell hybrid, suggesting that complex genetic loci are involved in the development of the multiple drug-resistant phenotype. These mutants should be useful for the study of the clinically important problem of multiple drug resistance in human cancer. PMID- 3856954 TI - Complementation analysis of locus for hypoxanthine guanine phosphoribosyltransferase in Chinese hamster cells. AB - The study deals with intragenic complementation between clones of Chinese hamster cells carrying mutations in the HPRT gene. All clones were of independent origin, selected in media containing one of three purine bases: 8-azaguanine (8 AG), 6 mercaptopurine (6MP), or 6-thioguanine (6TG). Some of the clones were spontaneous, others were induced by various mutagens. To make the study less time consuming, an experimental set-up was proposed for simultaneous complementation testing of up to 10 clones. As a result, about 400 combinations of clones have been analyzed. Twelve pairs of complementating mutants have been identified in HAT medium. A linear complementation map has been constructed for the HPRT locus, showing five complementation groups. The changes in kinetic and other characteristics observed for mutant HPRT show that all the mutants studied carry structural gene mutations. Analysis of the biochemical characteristics of HPRT has revealed considerable differences between mutant enzymes in clones belonging to different complementation groups (three groups were examined). At the same time, the four mutant clones of complementation group II show similar HPRT characteristics, suggesting a relative similarity of their structural variants of the enzyme. The hybrid nature of HPRT in clones resulting from the fusion of mutant cells confirms the intragenic nature of complementation. PMID- 3856955 TI - Chromosomal localization of three human ras genes by in situ molecular hybridization. AB - Three human ras family protooncogenes, c-Ki-ras-1, and c-Ki-ras-2, and N-ras, have been mapped to chromosome bands 6p11-12, 12p11.1-12.1, and 1p11-13, respectively by in situ molecular hybridization. Certain human cancers display consistent and specific alterations involving chromosomes 1, 6, and 12. The precise chromosomal localization of ras genes will permit evaluation of the possible effect of these chromosome changes on the structure and activities of ras protooncogenes in human neoplasia. PMID- 3856956 TI - The limited role of splenectomy in patients with leukemia. AB - Splenectomy is a valuable method of management of approximately 80 per cent of patients with hairy cell leukemia who have hypersplenic complications develop; operation can be performed with minimal morality and morbidity. Removal of the spleen also provides useful palliation in patients with chronic lymphocytic leukemia who have symptomatic splenomegaly or autoimmune hemolytic anemia; success is less predictable when operation is performed for thrombocytopenia. Splenectomy is linked with a high mortality and is of little benefit in patients with chronic granulocytic leukemia except when operation is performed as a prerequisite to bone marrow transplantation. Several patients with acute leukemia who have signs of splenic infarction and intra-abdominal bleeding develop had a short survival period after splenectomy. PMID- 3856957 TI - High frequency jet ventilation in tracheopleural fistula: case report. PMID- 3856958 TI - [Genetic predisposition for cancer. Illustrated by a case of hereditary retinoblastoma]. PMID- 3856959 TI - [Family clustering of leukemia/lymphoma. Genetic predisposition in a multi-factor genesis of cancer]. PMID- 3856960 TI - HLA-A and -B (but not -C, -Bw4, Bw6 or -DR antigens) are expressed on purified spermatozoa. AB - HLA-A and -B antigens have been found in purified spermatozoa using a double fluorescence cytotoxicity technique and specific absorptions. HLA-C, -Bw4, Bw6 and -DR antigens have not been found using the same techniques. Controversial results regarding HLA expression on spermatozoa have been presumably obtained because of a lack of both seminal cell purification and an appropriate more accurate cytotixicity technique. The presence of HLA antigens on seminal cells may be of relevance to explain the postulated immunosuppressive alloimmunization which may occur in the acquired immunodeficiency syndrome (AIDS). PMID- 3856961 TI - Brief summary of Ninth International Histocompatibility Workshop. PMID- 3856962 TI - Expression of red cell antigens by K562 human leukemia cells before and after induction of hemoglobin synthesis by hemin. AB - We studied the red cell antigens present on K562 human leukemia cells before and after induction of hemoglobin synthesis by hemin. The fetal antigens i, IF, and IT were detected on uninduced cells. While expression of both i and IT antigens increased after hemin induction, expression of IT was closely related to fetal hemoglobin synthesis as determined in experiments in which the induction was reversed. The EnaFR, NVg, and T antigens of glycophorin A were also present on uninduced cells. In contrast, the M and Pra antigens of glycophorin A, the Kell system antigens, and the P1 antigen became detectable only after hemin induction. Antigens of other major red cell systems were not detected. PMID- 3856963 TI - Cytokinetic studies in acute leukemia during early induction therapy. AB - The proliferative activity of bone marrow blasts was determined in 19 patients with acute leukemia during early induction therapy using in vitro tritiated thymidine (3H-TdR) cytoautoradiography and propidium iodide DNA flow cytofluorometry. Following 1-3 causes of treatment, the aliquot of bone marrow blasts in 9 patients, who later achieved remission or marrow aplasia, was reduced to a greater extent that of the remaining 10 patients who failed to respond. In the first group of patients, the 3H-TdR labeling index was increased by 259-653% over the pretreatment value, whereas it was lower than 104% of the pretreatment value in all but one unresponsive patient. Leukemic blast recruitment is conceivable. It might have facilitated remission by increasing the effectiveness of the antileukemic agents administered later. PMID- 3856964 TI - [The Kleine-Levin syndrome. Periodic hypersomnia and hyperphagia with abnormal behavior]. PMID- 3856965 TI - Increased conception rate in dairy cows after PGF2 alpha. PMID- 3856966 TI - [Leukocytopheresis in leukemia]. PMID- 3856967 TI - [Dermatoglyphic markers of hereditary predisposition in patients with peptic ulcer, chronic gastritis and cholecystitis]. PMID- 3856968 TI - [Various induction therapies in older patients with acute myeloid leukemias]. AB - Due to unmanageable complications the results of high-dose chemotherapy for remission induction were significantly worse in a group of elderly patients with AML than for younger ones (greater than vs. less than 50 years: CRR 44% vs. 78%, p = less than 0.005). Hence, different induction schedules were studied for older patients with AML. A high response rate to low-dose cytosine-arabinoside (LD-CAR) was observed in myeloblastic and promyelocytic leukaemias, but the complete remission rate was low. Induction treatment with VP 16-213, aclacinomycin, cytosine-arabinoside and thioguanine resulted in a high complete remission rate (69%). Toxic side effects cannot be excluded in individual cases. These results justify prospective studies to evaluate the significance of the efficacy of these induction schedules. PMID- 3856969 TI - [Specific chromosome aberrations in 3 patients with Burkitt-like leukemia (Fab: L3)]. AB - Karyotype analysis using the Tri-staining-technique (Chromomycin A3/Distamycin A/DAPI) and subsequent DAPI/AMD staining (Schweizer, 1981) was performed on the bone marrow and peripheral blood of three patients with "Burkitt-like" acute lymphatic leukaemia (FAB: L3). In two patients we found the specific translocation t(8;22). One patient displayed in addition a structural abnormality of chromosome 9, visualized with C-banding using the DA/DAPI stain, and in two patients we found specific abnormalities of chromosome 1. Several patterns of the abnormal chromosome 1 revealed an intercalated DA/DAPI positive C-band in the elongated long arm. PMID- 3856970 TI - [Treatment of purulent meningitis with ceftriaxone]. PMID- 3856971 TI - [The effect of ceftriaxone on the blood coagulation parameters of intensive care patients]. PMID- 3856972 TI - [Perioperative antibiotic prophylaxis. A comparative study of 244 patients with colonic diseases]. PMID- 3856973 TI - [Ceftriaxone in pediatric surgery]. PMID- 3856974 TI - [The antibacterial activity of ceftriaxone and evaluation criteria for an agar diffusion test with ceftriaxone]. PMID- 3856975 TI - [The activity and tolerance of ceftriaxone in the treatment of severe surgical infections]. PMID- 3856976 TI - [Ceftriaxone-concentrations in heart tissue. Preliminary results]. PMID- 3856977 TI - [Tumor-associated markers as organ-specific antigens of human seminal plasma. I. Immunologic studies]. AB - We could demonstrate that some constituents of the human seminal plasma must be regarded as organ-specific substances; these are known as characteristic tumor markers in connection with other subjects. Accordingly, the occurrence of the tumor markers Ca 19-9tm, CEA and Ca 12-5tm in samples of normal human seminal plasma shows that these materials must be defined in this case as organ characteristic markers. We report on different quantitative distribution of these markers and give evidence that the Ca 19-9 antigen only occurs in persons positive with respect to Lewis' blood group. PMID- 3856978 TI - [Pain therapy in the recurrence of colorectal cancer]. AB - After exploiting all causal therapies there are other therapeutic methods only for soothing, viz. anodyne drug therapy using peripheral or central efficient analgesics, opiates and opioids as well. Procedures with destructing the pain sensitive nerve path (chemical neurolysis using a method like conduction anaesthesia) and blockage of the sympathetic trunk and plexus coeliacus are preferred against intrathecal rhizolysis. Operative: Percutaneous cervical chordotomy. If insufficient analgesia results by these methods patients may get a peridural long acting catheter for applying local anaesthetics and/or opioide/opiate. Special importance is attached to the psychological care of all these patients. PMID- 3856979 TI - Previous cytology in patients with invasive carcinoma of the cervix. AB - The cytologic history of 346 patients presenting with invasive carcinoma of the cervix was reviewed. A total of 74 patients (21%) reported that cervical cytology had been performed in the five years prior to presentation; confirmation of the cytologic history was obtained in 65 cases. Smears were available for review in 34 cases; of 28 smears originally reported as negative, 20 were found to be abnormal on review. The possible reasons for the failure of cytologic detection in these patients are discussed. PMID- 3856980 TI - Incidence of actinomycetes infection in women using intrauterine contraceptive devices. AB - Pancervicovaginal smears taken from 350 women using an intrauterine contraceptive device (IUD) were screened for the presence of actinomycetes organisms. Of the 12 cases in which actinomycetes-like organisms were seen in Papanicolaou-stained smears, the presence of actinomycetes organisms was confirmed by immunofluorescence in 10 cases. The prevalence of actinomycetes infection was thus 2.8% (10 of 350 cases) in the IUD users. Eight (4.3%) of 173 symptomatic subjects had actinomycetes infections. Two of the positive cases were asymptomatic. Eight of the ten patients with confirmed actinomycetes infection were using the Cu T device while two were wearing the Lippes Loop IUD. Seven of the ten patients had been using an IUD for more than two years. The time of insertion of the IUD (postpuerperal, postmenstrual or after medical termination of pregnancy) did not show any correlation with the presence of actinomycetes infection. Actinomyces israelii was responsible for the infection in eight cases while Arachnia propionica was seen in two cases. The organisms could not be grown in culture. PMID- 3856982 TI - Urinary cytology of tuberculosis of the bladder. AB - The cytologic findings in the urinary sediment of 13 patients with tuberculosis (TB) of the bladder were compared with the histologic findings. TB was cytologically recognized in 11 patients because of the presence of epithelioid and/or Langhans' giant cells. The morphologic deviations of the urothelial cells and the urothelium were classified according to the criteria of Koss. The type I atypical urothelial cells found in ten patients were correlated to the urothelial hyperplasia found at histology; the follow-up data documented the benign reversible nature of the urothelial hyperplasia as the focal expression of the reactive potential of urothelium to various forms of inflammatory processes. The presence of type II atypical urothelial cells reflected moderate and severe atypia of the urothelium at biopsy. In order to assess the reactive, reversible or precancerous nature of these forms of atypia associated with TB, an accurate follow-up is necessary. Since TB of the bladder may cause the presence of atypical cells in the urine, this lesion is of special interest in the differential diagnosis between inflammatory processes and carcinoma. PMID- 3856981 TI - Urinary cytology for carcinoma in situ of the urinary bladder. AB - The urinary cytologies of 14 nonpapillary carcinomas in situ of the urinary bladder were reviewed. Cytologic malignancy was often diagnosed before any clinical manifestation or cytoscopic lesion could be perceived. The cytologic characteristics of this lesion as previously described in the literature were confirmed: the background was usually clean and the tumor cells were numerous and relatively monomorphic, with many atypias. Taking into consideration the limitations discussed, urinary cytology should be regarded as having great accuracy in the early diagnosis of in situ carcinoma of the urinary bladder. PMID- 3856984 TI - Clear-cell adenocarcinoma of the female urethra. AB - Malignant cells were found in the urine of a 54-year-old woman. The papillary tumor subsequently removed from the posterior wall of the urethra proved to be a clear-cell adenocarcinoma. The cytologic, histologic and ultrastructural features of this tumor were very similar to clear-cell adenocarcinomas arising in the female genital tract, suggesting a possible Mullerian origin of this neoplasm. PMID- 3856983 TI - Cytodiagnosis of endometrial malignant mixed mesodermal tumor. AB - The accuracy of endometrial aspiration smears obtained with the Isaacs cell sampler in the diagnosis of malignant mixed mesodermal tumors (MMMT) was compared to the results obtained with routine cervical and vaginal smears in five cases of MMMT found in a series of 220 endometrial aspirations. Cervical and vaginal smears previously taken on these patients were positive for adenocarcinoma or MMMT in two cases and suspicious for adenocarcinoma in the remaining three cases. Endometrial aspirates were positive for MMMT in three cases and positive for adenocarcinoma or MMMT in two cases. The endometrial aspiration smears contained a variety of cells: malignant glandular, squamous, spindly stromal, undifferentiated, osteoid and tumor giant cells; chondrocytes and free psammoma bodies were also observed. These cases indicated that endometrial aspiration can accurately detect the heterologous cellular elements found in MMMT and is an effective technique in its diagnosis. PMID- 3856985 TI - Pneumatosis cystoides gastrica associated with adenocarcinoma of the stomach. AB - This paper reports the finding of benign foreign-body-type multinucleated giant cells and clumps of adenocarcinoma cells in gastric brushing cytology specimens of a case confirmed by radiology and histology as pneumatosis cystoides gastrica associated with an ulcerated carcinoma. Pneumatosis cystoides gastrica should be included in the differential diagnosis of benign multinucleated giant cells found in gastric cytology smears. PMID- 3856987 TI - Diagnostic accuracy of lung cytology: terminology. PMID- 3856986 TI - Possible spread of bronchogenic carcinoma to the chest wall after a transthoracic fine needle aspiration biopsy. A case report. AB - Spread of tumor along the needle tract following aspiration biopsy with the so called "fine" needles (thinner than 18 gauge) is recognized to be an extremely uncommon complication of this technique. A case is presented in which such a spread appears to have occurred to the chest wall 13 months after a transthoracic aspiration biopsy of a bronchogenic tumor. PMID- 3856988 TI - Curschmann's spirals in equine endometrial washings. PMID- 3856989 TI - Urine eosinophilia in bladder cancer. PMID- 3856990 TI - Cytology of tracheobronchial amyloidosis. PMID- 3856991 TI - Storage of cerebrospinal fluid samples at room temperature. PMID- 3856992 TI - Multinucleated cells in bronchoalveolar lavage. PMID- 3856993 TI - Psammoma bodies in the aspiration cytology smears of an acinic-cell tumor. PMID- 3856994 TI - Osteosarcoma with multiple intramuscular metastases. A case report. AB - A 21-year-old man with an osteosarcoma in the proximal tibia was treated by amputation, radio- and chemotherapy. Besides pulmonary metastases, intramuscular metastases repeatedly developed. Cell culture studies of pulmonary and muscular tumors showed different sensitivity patterns for cytostatic drugs; the therapy may have selected different subpopulations of the primary tumor. PMID- 3856995 TI - The presence of bulimia in high school females. AB - The purpose of this study is to show that the appetite disorder bulimia is present in high school females. Previous research has shown the presence of bulimia in college women. The study was conducted using the entire female population of a large suburban, midwestern community high school. The Eating Disorder Inventory was used to identify the presence of bulimia. Data collected were classified for analysis using the bulimia scale as identified by the EDI. Using analysis of variance (ANOVA) these data were compared on each of the seven scales using bulimia diagnosis and age. The correlation was significant (.01) on five of the seven scales. It was concluded that there is a bulimic population at the high school level which includes females, ages 14-18. The percentages of bulimic females in categories of black, white and others were equal. This is significant because bulimia has not previously been recognized as present in the black population. Knowledge of the attitudes of bulimic students will help those professionals who work with adolescents to recognize bulimic behavior. Community referral agencies and individuals who can help the affected and provide support for the family should be identified and utilized. PMID- 3856996 TI - Ability and responsibility. PMID- 3856997 TI - Periodic acid-Schiff stain in childhood acute lymphoblastic leukemia: lack of independent prognostic value. AB - The authors reviewed 250 consecutive children with ALL to determine if the periodic acid-Schiff (PAS) score was a useful, independent predictor of time to failure. PAS stains were scored from 0 to 400 and divided into low- and high score groups using a variance-ratio test (F test) to optimize any effect of PAS on prognosis. Although the effect of PAS score considered alone approached significance for time to failure, the PAS score lost all significance when the patients were divided into standard-risk and high-risk groups on the basis of peripheral white count, central nervous system involvement, mediastinal mass, or E-rosette positivity at diagnosis. A Cox regression analysis was performed on a subgroup of 198 patients for whom cytogenetic studies were also available. The PAS score again approached the level of significance when considered alone but was of no significance after the effects of peripheral white count, pseudodiploidy, mediastinal mass, and E-rosette positivity were removed. The authors conclude that the PAS stain has no independent prognostic significance in childhood ALL. PMID- 3856999 TI - Fighting fibrositis. PMID- 3856998 TI - Open lung biopsy in patients with acute leukemia. AB - The results of open lung biopsy in 15 patients with acute leukemia, pulmonary infiltrates, neutropenia, and fever were reviewed. The patients averaged 26 hospital days of neutropenia and 20 hospital days of fever before open lung biopsy, and all patients received broad-spectrum antibacterial agents (mean 17 days) before open lung biopsy. Nine (67 percent) received amphotericin B prior to open lung biopsy (mean 22 days). Open lung biopsy yielded a specific clinically helpful diagnosis in six patients, but only two of these patients survived the hospitalization during which open lung biopsy was performed. Open lung biopsy detected fungus in four patients and leukemic infiltrates in two patients. Management was appropriately modified in these patients. In nine patients, a specific diagnosis of the pulmonary infiltrate was not obtained by open lung biopsy. Antimicrobial regimens were not changed substantially for these patients. In six patients, the results of open lung biopsy may have been misleading. Two patients had pulmonary fungal diseases at autopsy, undetected by open lung biopsy eight days and five weeks prior to death. Another patient had invasive aspergillosis and one had cytomegalovirus pneumonitis not detected by open lung biopsy. Two patients had false-positive preliminary histologic reports of pulmonary infection. On the basis of this experience, in this specific population of patients, open lung biopsy was often of little help in directing medical therapy or influencing clinical outcome. PMID- 3857000 TI - Inhibition of fetal membrane prostaglandin production by prolactin: relative importance in the initiation of labor. AB - Production of a biologically active prolactin by human decidual tissue and its influence on the permeability of amniochorion to water suggests a functional relationship between the polypeptide and fetal membrane metabolism. Under in vitro circumstances, we used ovine prolactin and the Ussing chamber technique to determine the role of prolactin in prostaglandin E2 production by human fetal membrane. Fresh reflected membranes obtained from elective cesarean sections were exposed to ovine prolactin (10 micrograms/ml). Aliquots of incubation media were sampled at 0, 30, 60, 120, and 240 minutes, quick-frozen, and later assayed for prostaglandin E2. Multifactorial analysis of variance revealed that ovine prolactin significantly reduced prostaglandin E2 production (f = 13.42, p less than 0.005). Prostaglandin E2 output was greatest by amnion (3581 +/- 596 pg/ml/gm declining to 1819 +/- 452 pg/ml/gm during 4 hours). Other combinations of fetal membranes including amnion-chorion-decidua produced only 12% to 15% prostaglandin E2 per gram compared with that produced by amnion alone. Those membranes similarly responded to prolactin with a reduction in prostaglandin E2 output of 34% to 59%. Correlation analysis identified a significant relationship between prostaglandin E2 production and time (r = 0.298; p less than 0.001), which was abolished by ovine prolactin (r = 0.115, p greater than 0.10). This model illustrates that ovine prolactin modifies the production of prostaglandin by fetal membranes in vitro. By analogy, endogenous prolactin by human decidual tissue might also inhibit the elaboration of prostaglandin E2 from its precursors residing within the fetal membranes. PMID- 3857001 TI - Cytologic diagnosis of myeloid sarcoma. PMID- 3857002 TI - Central and peripheral corneal swelling accompanying soft lens extended wear. AB - Central and peripheral corneal thickness changes were measured after 3 hr of eye closure with and without contact lens wear. Spun cast and lathe cut hydrogel extended wear lenses of -1.25, -6.00, and -9.00 D were used. Each of these conditions produced 25 to 50% less swelling in the peripheral than in the central cornea. Central swelling was greater with higher minus spun cast lenses, but not related to the power of the lathe cut lenses. Higher minus lens powers of both lens types produced greater peripheral swelling. Differences between central and peripheral swelling were smaller with the higher minus lenses, indicating little, if any, averaging of tear oxygen tension under the lens when the eyes are closed. The mechanism resulting in less peripheral corneal swelling is likely to be caused by an anatomical "clamping" at the corneal limbus. PMID- 3857003 TI - The effects of chin cup therapy on the mandible: a longitudinal study. AB - This study was conducted to evaluate the effects of chin cup therapy on the mandible and its dentition in persons with skeletal Class III malocclusion. The patients selected for this study were Japanese females treated with the extraoral chin cup appliance. Both the control and treatment samples were obtained from Japanese Universities where the longitudinal data were gathered. Lateral cephalometric radiographs were taken on the average of every 6 months for the treatment group and every year for the control group. Ten treated patients and seven control patients were studied. The duration of chin cup therapy was variable but averaged 3 years 1 month. The cephalograms were digitized on an electronic screen, and a cephalometric analysis was recorded from a computer program. The rate change values were then compared with those of the control group to yield a comparison of changes in mandibular growth rate, direction, and pattern in the treatment group. Active and posttreatment effects were evaluated. All measurements for the rate of change of absolute mandibular length were reduced by 60% to 68% from the control rate of growth during therapy. The mandible exhibited less downward displacement relative to cranial base during treatment. The mandibular plane angle and the gonial angle closed with growth in the Class III control sample but were variable in the treatment group. The skeletal profile was improved with treatment. This study indicates that the chin cup may be a viable mode of treatment for the preadolescent and adolescent mandibular prognathism patients. PMID- 3857004 TI - Temporomandibular joint dysfunction. Report of a case. AB - Occlusal bite splint therapy and the application of sound principles of functional occlusion resulted in a definitive diagnosis and successful orthodontic re-treatment of a patient with chronic disorder of the left temporomandibular joint. This case report demonstrates that latent mandibular growth and orthodontic retention can produce anterior premature centric contacts. The anterior prematurities prevented the posterior teeth from occluding without the left condyle first dislocating from the glenoid fossa. Occlusal bite splint therapy allowed the mandible to move to a position of greater maxillomandibular stability, illustrating the need for anterior freedom for the mandible. The patient became asymptomatic 1 month after slight intrusion and changing of the axial inclination of the maxillary incisors, which provided a freedom of centric occlusion and allowed the condyle to seat in the fossa. TMJ radiographs supported the clinical findings. PMID- 3857005 TI - Bilateral congenital absence of maxillary lateral incisors: a craniofacial and dental cast analysis. AB - The dental casts and cephalometric records of forty-three patients exhibiting bilateral congenital absence of maxillary lateral incisors were evaluated to determine the nature and extent of any concurrent craniofacial and dental anomalies. The effects of bilateral orthodontic space closure were evaluated on a subsample of twenty-two cases. The data revealed normal dental arch length, arch width, overjet, and overbite, while significant tooth size discrepancies were found in several anterior and posterior teeth. Craniofacial deviations from normal included smaller maxillary length, smaller mandibular length, smaller anterior cranial base, and nasal bone. Vertical facial dimensions, both anterior and posterior, were significantly less, as was the mandibular plane angle. Soft tissue examination revealed a 10 degrees greater nasiolabial angle, which was increased a further 5 degrees as a result of a mean incisor retraction of 1.5 mm during space closure. The craniofacial anomalies noted in the present sample were similar to those seen in persons with clefts and may reflect a common etiology related to a developmental disturbance during fusion of the facial processes in utero. In the treatment of patients with bilateral congenital absence of maxillary incisors, mechanotherapy designed to open the mandibular plane, increase the vertical dimension, and move the maxillary posterior teeth forward is recommended in order to prevent worsening the Class III tendency and to minimize maxillary incisor and upper lip retraction. Most cases will require significant mesiodistal reduction in tooth size in order to achieve an optimal occlusion. PMID- 3857006 TI - Neuromuscular adaptation of craniofacial muscles to altered oral sensation. AB - Experimentally induced changes in oral sensation to the tongue altered the use of specific craniofacial muscles. An acrylic wedge was anchored to the maxillary teeth of ten adult rhesus monkeys, providing a tactile-pressure sensation to the dorsal surface of the tongue. Fifteen craniofacial and tongue muscles were studied by electromyography during the first 6 months of adaptation. The results showed that there was an overall shift in those muscles that were normally tonically active in the craniofacial region. Muscles of the suprahyoid region, the geniohyoid and digastric, as well as the platysma muscle of the face, and the lateral pterygoid muscle were tonically active in more animals after placement of the wedge. In contrast to the enhanced activity of mandibular and facial muscles that function during mandibular depression, only the anterior temporalis muscle in the superficial and deep region demonstrated more tonic activity. The superficial and deep masseter regions, as well as the medial pterygoid muscle, demonstrated no change in their EMG activity. Only the lip muscles and mentalis demonstrated increased activity, whereas the facial muscles with more vertically oriented fibers did not demonstrate any increased activity. These findings suggest that a change in the tactile stimulation to the tongue can induce a new balance in the level of activity of specific craniofacial muscles and that this altered neuromuscular pattern can remain throughout the first 6 months of adaptation. PMID- 3857007 TI - Effects of head position on intraoral pressures in Class I and Class II adults. AB - Variations in resting lip and tongue pressures and their relationship to alterations in head posture were investigated in subjects with Class I and Class II dental and skeletal morphology. Intraoral pressures were measured by means of transducers mounted in plastic carriers, customized for each subject from dental casts. Transducers were placed in the carriers to measure posterior lingual, anterior lingual, and labial pressures along the mandibular dentition. Ten Class I subjects and eleven Class II subjects participated. Pressures were recorded in natural head position, with 20 degrees of head extension and 20 degrees of head flexion. The Friedman two-way analysis of variance using ranked data was used to compare transducer location and head posture within skeletal classes. Anterior pressures were found to differ from posterior pressures in both classes. In Class I subjects, posterior lingual pressures were consistently different from labial pressures in all head positions. In Class II subjects, posterior lingual pressures differed from labial pressures in flexion and natural head positions, and from anterior lingual pressures in flexion and natural head positions. No increase in labial pressures with head extension was found in either Class I or Class II samples. Since every subject showed pressure changes with changes in head position, the influence of posture should be considered in studies on facial morphology and dental equilibrium. PMID- 3857009 TI - Quo vadis? PMID- 3857008 TI - Total mandibular alveolar osteotomy: an alternate choice to other surgical procedures. AB - Patients whose facial esthetics are not severely compromised but who need surgical intervention for the correction of a dentoskeletal problem can be treated by repositioning of the whole mandibular alveolar segment in the direction needed to allow for such correction. The challenge to achieve efficient and relatively stable results with the use of combined orthodontic and surgical methods has been met by the use of various surgical techniques. The lower total alveolar osteotomy is another viable surgical technique that could be considered when treatment is being planned in an orthognathic surgical case. Its indications, contraindications, advantages, and disadvantages are described, and cases are reported to exemplify problems that can be corrected with this approach. PMID- 3857010 TI - Genetic markers of an aboriginal Taiwanese population. AB - A group of Taiwan aborigines, the Toroko, was typed for 21 classical genetic loci. This is part of an ongoing program aimed at a comprehensive study of Taiwan aborigines. In this first paper a short summary of historical, archeological, and anthropological data in the literature is made, and results of the present survey are compared with older results from other aborigine tribes. An analysis of other neighboring populations from southeast Asia has also been carried out in order to give a preliminary answer to the question of origin of Taiwanese aborigines. Fifteen populations were studied for 13 loci by tree analysis, principal components, and isolation by distance. Tree analysis and principal component analysis gave results in fairly good agreement and indicate three major population clusters: a northeast cluster (Ainu, Korea, Japan, and Ryukyu); a southeast cluster (south China, Thailand, Vietnam, Philippines, Taiwan, and Toroko); and a third cluster including Malaya and Borneo. The positions of Polynesia, Micronesia, and Melanesia are somewhat peripheral. Analysis of the tree shows some potential cases of convergence, perhaps owing to admixture, and of divergence. The analysis of isolation by distance shows that geographic propinquity is a reasonably good predictor of general similarity in this area. PMID- 3857011 TI - The validity of the distinction between bulimia with and without anorexia nervosa. AB - The purpose of this study was to examine the relationship between bulimia in women with anorexia nervosa and bulimia of a similar severity in normal-weight women and to determine the support for the distinction between these two groups according to DSM-III criteria. Results indicated that bulimic women with anorexia nervosa (N = 59) and bulimic normal-weight women (N = 59) resembled each other on most variables and were more similar to each other than to women with anorexia nervosa who rigidly restricted food intake (N = 59). The results failed to support the diagnostic distinction between bulimia in anorexic women and bulimia of equal severity in normal-weight women. PMID- 3857012 TI - Tourette syndrome, pimozide, and school phobia: the neuroleptic separation anxiety syndrome. AB - The development of school phobia has been reported in some patients with Tourette syndrome treated with haloperidol. The author reports on a patient who developed school phobia on each of three trials with pimozide, a neuroleptic chemically similar to haloperidol, and proposes the term "neuroleptic separation anxiety syndrome." The syndrome is clinically indistinguishable from DSM-III criteria for school phobia (separation anxiety disorder). Tricyclic antidepressants may have a therapeutic or prophylactic effect. It is not known whether this neuroleptic side effect occurs in patients other than those with Tourette syndrome. PMID- 3857013 TI - Finger calluses in bulimia. PMID- 3857014 TI - Bulimia with self-induced vomiting after gastric stapling. PMID- 3857015 TI - Ventilation during CPR: two-rescuer standards reappraised. AB - Current American Heart Association standards for ventilation during two-rescuer CPR recommend that a 0.8- to 1.2-L breath be delivered in 0.5 second after every fifth chest compression. Delivering a high-volume breath over a brief inspiratory time (TI) may lead to hypoventilation and gastric insufflation in victims with an unprotected airway. We reasoned that lengthening TI would lower peak inspiratory pressure and peak inspiratory flow rate, and thus improve lung inflation. To study this possibility, a mechanical model of the airway and upper gastrointestinal tract was designed. A ventilator delivering a sinusoidal wave form was used to simulate artificial ventilation. A 0.8-L breath was delivered at 0.5, 1.0, or 1.5 seconds at three lung compliances (CLs). Also, the effect of lengthening TI was studied with increased airway resistance. Lengthening TI improved lung inflation and decreased gastric insufflation at all CLs, but more so with normal CL than with decreased CL. This study demonstrates the need for evaluating alternative ventilatory patterns with longer TI during CPR. PMID- 3857016 TI - Dieting and binging. A causal analysis. PMID- 3857017 TI - [Metabolic and renal changes in lymphoproliferative syndromes of childhood]. AB - Authors report five patients with lymphoproliferative diseases who suffered from metabolic and renal disorders hyperuricemia, hyperphosforemia, hyperkaliemia, hypocalcemia and azotemia) during initial phase of chemotherapy. They comment on measures to prevent these disorders and the need of hemodialysis in some cases. PMID- 3857018 TI - Pharmacokinetics of cefotiam in humans. AB - After intravenous bolus injections of 0.5, 1, and 2 g of cefotiam to three healthy volunteers, the mean (+/- standard deviation) total plasma clearances measured for each dose were, respectively, 26.8 +/- 2.7, 22.8 +/- 0.8, and 17.8 +/- 0.9 liters/h; the terminal elimination half-lives were 54.0 +/- 0.1, 68 +/- 15, and 98 +/- 36 min; and the renal clearances were 16.0 +/- 2.9, 13.3 +/- 1.4, and 11.3 +/- 2.6 liters/h. The 24-h urinary recovery was independent of the dose and averaged 53% of the dose. After intramuscular administration of 1 g of cefotiam to three healthy volunteers, a mean (+/- standard deviation) peak concentration of 16.6 +/- 5.1 micrograms/ml was reached at 0.75 to 1 h post dosing. The concurrent intramuscular administration of lidocaine and cefotiam did not modify the kinetics of cefotiam. During a constant-rate infusion, the steady state plasma clearance decreased slightly when the infusion rate was increased. There was no trend towards accumulation of cefotiam in plasma during chronic treatment with 1 g intravenously every 12 h for 10 days. PMID- 3857019 TI - Enhancement by clofazimine and inhibition by dapsone of production of prostaglandin E2 by human polymorphonuclear leukocytes in vitro. AB - The effects of the antileprosy agents clofazimine and dapsone (1 to 10 micrograms/ml) on the spontaneous and stimulated release of prostaglandin E2 (PG E2) by human polymorphonuclear leukocytes (PMNL) in vitro have been investigated. PMNL were obtained from normal adult volunteers and three patients with leprosy (two borderline lepromatous and one subpolar lepromatous leprosy). The synthetic chemotactic tripeptide N-formyl-L-methionyl-L-leucyl-L-phenylalanine (FMLP) at a concentration of 10(-7) M was used as the stimulant of PG E2 synthesis. None of the test agents at the concentrations used inhibited the binding of radiolabeled FMLP to PMNL. However, dapsone at 5 and 10 micrograms/ml inhibited the spontaneous and FMLP-induced release of PG E2 by PMNL. Clofazimine, on the other hand, significantly increased both the spontaneous and the FMLP-induced synthesis of PG E2 by PMNL. The enhancing effects of clofazimine on FMLP-mediated synthesis of PG E2 were particularly striking and were observed at concentrations of 1 to 10 micrograms of the drug per ml. Measurements of PMNL spontaneous and FMLP induced synthesis of PG E2 in the presence of both clofazimine and dapsone (5 micrograms/ml) indicated that the two drugs are mutually antagonistic. PMNL from both normal control subjects and patients with leprosy were equally sensitive to these effects of clofazimine and dapsone. The immunostimulatory and immunosuppressive properties of dapsone and clofazimine, respectively, may be related to the opposite effects of these agents on PG E2 synthesis in human leukocytes. PMID- 3857020 TI - In vitro susceptibility of Mycobacterium fortuitum and Mycobacterium chelonei to cefmetazole. AB - The in vitro susceptibility of Mycobacterium fortuitum and Mycobacterium chelonei to cefmetazole was studied by the agar dilution method. At a concentration of 16 micrograms/ml or lower, 44 isolates (96%) of M. fortuitum and 8 isolates (40%) of M. chelonei were inhibited. PMID- 3857021 TI - Crystalline ribulose bisphosphate carboxylase/oxygenase of high integrity and catalytic activity from Nicotiana tabacum. AB - Crystalline tobacco (Nicotiana tabacum L.) ribulose-1,5-bisphosphate carboxylase/oxygenase (EC 4.1.1.39) was prepared using a procedure which protected the enzyme from hydrolysis by endogenous proteases. Leaves were extracted in a buffered medium containing casein, leupeptin, and high concentrations of MgSO4 and NaHCO3. After filtration through ion-exchange resin to remove contaminants, the enzyme was concentrated by precipitation with polyethylene glycol and crystal formation was induced by low-salt dialysis. The crystalline enzyme had a measured specific activity of 1.7 mumol CO2 mg protein-1 min-1, and about 93% of the enzyme could be activated with Mg2+ and CO2. Crystalline enzyme prepared in the absence of casein exhibited an activity which was only one-third of this rate and only about 70% of the enzyme could be activated with Mg2+ and CO2. Casein-extracted enzyme was resolved into distinct bands corresponding to the large (55,000) and small (14,000) subunits by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The large subunit of enzyme prepared according to the latter procedure was found to be composed of five different polypeptides of slightly decreasing molecular weight. Only about one third of the large subunits were of the 55,000 molecular weight type. No differences between the two preparations were observed in the Km (CO2) and apparent Km (ribulose bisphosphate). PMID- 3857022 TI - Characterization of phorbol diester binding to isolated cardiac myocytes. AB - There are specified and saturable binding sites for [20-3H]phorbol-12,13 dibutyrate on enzymatically dissociated rat cardiac myocytes. At 37 degrees C, maximal binding occurs within 20 min, with a KD of 3.9 nM and Bmax of 0.275 pmol/mg. [3H]Phorbol dibutyrate binding is blocked by 12-O-tetradecanoyl phorbol 13-acetate but not by 4 alpha-phorbol or 4 alpha-phorbol-12,13-dibutyrate. Dibucaine, tetracaine, chlorpromazine, and phospholipase C lowered phorbol binding through a competitive mechanism. Similarly, unsaturated (but not saturated) diacylglycerols competed with [3H]phorbol dibutyrate for the binding site. There was a progressive decline in specific binding of phorbol diesters to cardiac myocytes which occurred primarily during the first 3 weeks of postnatal life. Cardiac phorbol diester receptors may mediate protein kinase C-dependent effects on important cellular functions such as Ca2+ transport. PMID- 3857023 TI - [Modified env gene in Friend spleen focus forming virus--structure, origin, and its role in leukemogenesis]. AB - Modified env gene or gp55 gene in Spleen Focus Forming Virus, polycythemic strain, K-1 was molecularly cloned and its structure was characterized gp55 is a fusion glycoprotein consisting of N terminal 2/3 of xenotropic virus-related gp70 and C terminal half of F-MuLV p15E. A unique structure at the 3' and of the gp55 gene with 6 base pairs + 1 base pairs insert was identified. Gp55 may be hooked by the lipid bilayer of the cell membrane of the SFFV-intected cells, and additional glycosylation on the cell surface may modify the growth regulation of the cells. Possible origin of SFFV-specific gp55 gene was discussed. PMID- 3857024 TI - [Drug administration in combination for management of cancer]. AB - The use of drugs in combination for the management of cancer patients aims at the increased therapeutic advantage by elimination the problem of the heterogeneous sensitivity of cancer cells to anticancer drugs, and by delaying or preventing the development of drug resistance within given tumors. Theoretically, the effects of drugs in combination are classified as antagonistic, subadditive, additive and synergistic. Since these results hold for both tumors and hosts, the effects of combined drugs should be considered in terms of therapeutic index. From this viewpoint, the choice and administration schedule of drugs in combination must be synergistic or additive for the tumors and antagonistic or subadditive for the hosts in regard to combined effects. Thus, the rationale for combined drug therapy should be considered from the aspects of biochemical basis, drug resistance, cytokinetic and pharmacologic rationales, and toxicologic basis. PMID- 3857025 TI - Leukemic ascites complicating acute myelomonoblastic leukemia. AB - We describe a patient with acute myelomonoblastic leukemia, jaundice, and ascites. The ascitic fluid contained leukemic cells comparable with those of the blood and bone marrow. Treatment with cytarabine (cytosine arabinoside) caused a decrease in the peripheral blood blast cell count and the serum bilirubin level, but the leukemic ascites did not change. Ascites in patients with acute leukemia must be examined to differentiate leukemic infiltration from other causes such as infection. PMID- 3857026 TI - Distribution of fluoride in human cementum. AB - Fluoride and phosphorus concentrations were determined in layers of cementum and dentine serially-abraded from the root surface, passing through the cementum dentine junction and into the underlying dentine, using silicon carbide impregnated film. The concentrations of F in the cementum mineral were variable but consistently maximal at or near to the external surface of the root and tending to fall towards the interior and across the cementum-dentine junction into the underlying dentine. The F content in the cementum tended to increase with age. PMID- 3857027 TI - Radioautographic analysis of [3H]-fucose utilization by mouse odontoblasts with emphasis on intracytoplasmic and plasma membrane glycoproteins. AB - [3H]-fucose utilization by odontoblasts was studied by light and electron microscopic radioautography. At 10 min after injection, fucose label was concentrated in the Golgi area. By 20-30 min, there was a progressive decline in Golgi labelling with label present at the plasma membrane, terminal web, odontoblast process and predentine matrix. At 4 h, the predentine and the predentine-dentine junction were heavily labelled. At the ultrastructural level, Golgi labelling at 10 min was mostly localized to cisternal elements and at 20 and 30 min secretory granules and dense bodies were also labelled. Most of the silver grains observed in the terminal web were associated with microfilaments near the plasma membrane. In the predentine, the matrix itself accounted for 23.0 per cent of the label at 4 h and the plasma membrane of the odontoblast process accounted for 19 per cent. The results indicate that odontoblasts, in addition to secreting glycoproteins into the dentinal matrix, also continuously manufacture glycoproteins for incorporation into the cell surface, the lysosomal system and the terminal web. PMID- 3857028 TI - Membrane architecture of myelinated nerve fibres in the human dental pulp studied by freeze-fracturing. AB - The outer surface of the myelin sheath was well visualized in electron micrographs of replicas and the distribution of its cytoplasm-containing portions could be analysed. Numerous caveolae, probably representing the surface stomata of endo- or exocytotic vesicles were found on the plasmalemmal surface overlying organelle-rich cytoplasmic regions. Membrane specializations of the tight junction type were found at the outer and inner mesaxons of the myelin sheath as well as at the Ranvier node and Schmidt-Lanterman incisures. Presuming that so called leakiness is related to the junctional morphology, these junctions would be classified as moderately leaky. The morphological features of the Schwann-cell nuclear envelope were essentially as described for other mammalian cells. PMID- 3857029 TI - Histomorphometric analysis of cartilage and subchondral bone in mandibular condyles of young human adults at autopsy. AB - After demineralization, sagittal sections were made from the lateral, the central and the medial parts of 33 mandibular condyles from people aged 20 to 36 years, and studied for undifferentiated mesenchymal (UM) cells, cartilage and subchondral bone, the thickness of which were measured. Two condyles showed a continuous layer of UM cells extending all over. In 13 condyles, UM cells were absent; 18 condyles showed variability in UM cell occurrence in one or more out of the nine standardized areas. In 14 condyles, non-hypertrophic cartilage was present, 10 condyles showed hypertrophic cartilage and in nine condyles hyperplastic cartilage. Hyperplastic cartilage was associated with minimal numbers of UM cells. In combination with hypertrophic cartilage the UM cell layer appeared less irregular. Of nine condyles with incongruence of the cartilage-bone interface and the articular surface, seven showed hyperplastic cartilage. Six out of these seven were free of bony changes. A negative correlation was found between the presence of UM cells and the condylar-cartilage thickness (p less than 0.05). These results suggest that condylar changes are initiated by alterations in the cartilage and that changes in the bone are secondary. PMID- 3857030 TI - Some factors affecting the diffusion of [14C]-lactate in human dental plaque. AB - The apparent diffusion rate, D, of lactate was significantly retarded in dental plaque fluid and a simulated plaque fluid consisting of a chemically-defined solution of salts, amino acids and albumin in phosphate buffer at pH 6.5. Metabolic utilization of lactate in live plaque residue reduced D for lactate into such samples of residue, compared with killed samples. D in plaque residue was lower than in a previous study. Increasing the packing density of killed plaque residue of Streptococcus sanguis cells reduced D. Pre-incubation of plaque residue with sucrose or sucrose + NaF reduced D for lactate. No such relationship was found when Streptococcus mutans was so treated, but D for lactate was lower when the cells were grown in tryptone-soy broth supplemented with 5 per cent sucrose compared with unsupplemented broth. The retardation of lactate increased with an increase in ion-exchange capacity of cation- and anion-exchange Sephadex gel-model systems. Thus, the apparent diffusion coefficient of lactate in dental plaque residue is influenced by the chemical composition of the plaque aqueous phase, by metabolism of lactate, by plaque tortuosity, sucrose metabolism and ion exchange interactions. PMID- 3857031 TI - Effects of colchicine and hydrocortisone on unimpeded eruption rates of root resected mandibular incisors of rats. AB - A single injection of colchicine and daily injections of hydrocortisone have opposite effects on tooth eruption, respectively causing marked reduction and marked increase in unimpeded eruption rates in the root-resected incisors of rats. Unimpeded eruption rates of both root-resected and normal, non-resected, incisors responded identically to these two drugs, providing support for the view that the eruptive process following root resection is physiological. It was not possible to obtain direct evidence relating to either the hydrostatic pressure or the periodontal fibroblast hypotheses of tooth eruption; the drugs used to affect the eruption rates of resected rat incisors could also affect either the tissue hydrostatic pressure or the motility or contractibility of periodontal fibroblasts or both. PMID- 3857033 TI - Inter-odontoblastic fibres in human dentine observed by scanning electron microscopy. AB - Crowns of healthy premolars with closed apical foramina were fixed, resin impregnated and freeze fractured. Fragments were critical-point dried and examined by scanning electron microscopy. Radial inter-odontoblastic fibres with a diameter of 0.1-0.7 micron were observed. Most of these radial fibres originated from the odontoblast cell body, but some of them arose from the pulp. Both of them entered the predentine at the rim of dentinal tubules and their branches formed the fibrous network of predentine. The odontoblast processes had only a few short side branches at the level of predentine. Some fibrils were observed in the mineralized intertubular dentine, as well. PMID- 3857032 TI - The role for butyrate and propionate in mediating HeLa-cells growth inhibition by human dental plaque fluid from adult periodontal disease. AB - To determine to what extent propionate and butyrate, secreted in vitro by various oral bacteria, account for the growth-inhibiting activity of plaque fluid in gingivitis in the absence or presence of chronic periodontitis, the fluid phase of plaque from each of these disease forms was obtained by homogenizing the bacteria with 0.13 M NaCl, centrifuging the mixture and Millipore-filter sterilizing the plaque-fluid-extract supernatant. Toxins were detected and measured by growth inhibition of HeLa cells grown in minimal Eagle medium supplemented with calf serum and antibiotics. Samples of butyrate, propionate or plaque-fluid extract were added and inhibition of growth was determined relative to control cultures. The toxins in each extract were characterized by their stability to heat, freeze-drying and elution on gel filtration. Butyrate and propionate contents were measured with a Hewlett-Packard 5880A gas chromatograph. The plaque-fluid extracts from each group had similar contents of butyrate, but most of the activity was due to heat-sensitive high mol. wt components. Butyrate and propionate accounted for only 5 to 15 per cent of the total activity. High mol. wt exotoxins, rather than butyrate or propionate, were the most prominent and freeze-drying-stable tissue-destructive agents in the plaque fluid from subjects with or without periodontitis. PMID- 3857034 TI - Tooth wear, solubility and fluoride concentration of molar-tooth surfaces in rats maintained on simultaneous or separate intake of food and fluoridated drinking water. AB - Eighty rats, 20 days old, were fed a hard pellet diet and deionized or fluoridated (25 parts/10(6) F-) drinking water respectively for 40 days. Half were maintained on simultaneous food and water intake for 3 h, daily, and the remainder on separate intake of food for 3 h followed by drinking water for 3 h, daily. Scanning electron micrographs of the occlusal surface of right maxillary first molars were used for scoring wear. The mandibular and left maxillary molar surfaces were used for solubility and fluoride concentration determinations. Intake of food and water separately did not affect wear significantly, whereas solubility and fluoride concentration of the molar surfaces were significantly increased. Wear, solubility and fluoride of the molar surfaces respectively were highly significantly increased in the rats provided with fluoridated water. Increase in fluoride uptake is due in part at least to the increase in sites available for uptake due to tooth wear. Acid dissolution of worn tooth-surface enamel is greater than that of intact enamel. PMID- 3857035 TI - Lipids of developing dental plaque in caries-resistant and caries-susceptible adult people. AB - Dental plaque maturation in both caries-resistant (CR) and caries-susceptible (CS) subjects was accompanied by a decrease in total lipid content but was more pronounced with CR subjects; their plaque after 72 h contained 44.6 per cent less lipids than that of CS. At each stage of maturation, differences were also found in the proportion of lipid classes. In 24 h-plaque, the lipids of CR-group, although containing amounts of glycolipids and phospholipids similar to those of CS, contained 1.6 times less neutral lipids. The 48 h-plaque of CS subjects showed 2.5 times more neutral lipids, 1.2 times more phospholipids and 1.4 times less glycolipids. The 72 h-CR plaque contained 1.9 times less neutral lipids, 1.6 times more glycolipids and 1.3 times more phospholipids than CS-plaque. Among the neutral lipids in both groups, the changes with maturation were associated with decrease in free fatty acids and increase in triglycerides, cholesterol and cholesteryl esters. Phospholipids of CR-plaque contained less phosphatidylcholine and more phosphatidylethanolamine than CS-plaque. With plaque maturation both groups showed decreases in the glycolipids characteristic of saliva and an increase in the content of bacterial type of glycolipids. Plaque maturation is evidently accompanied by dynamic changes in lipids reflecting a shift from salivary to bacterial contribution. PMID- 3857036 TI - The masseteric post-stimulus electromyographic-complex in people with dysfunction of the mandibular joint. AB - In mandibular joint-symptom-free subjects, post-stimulus EMG complexes (PSEC) were derived by standardized mechanical stimulation of an upper central incisor during clenching at a constant level of 5 per cent of maximal masseteric EMG activity. Seventy-two sweeps per subject were processed by means of a computer program, and different morphologies of the PSEC were seen. There appears to be no correlation with the Helkimo-index as a whole or its specific components. There is a strong correlation between tooth-grinding habits and the occurrence of a single inhibitory period. Patients with myofascial pain dysfunction consistently had a single inhibitory wave. When there was one affected side, the end latency of the second inhibitory wave was significantly shorter. PMID- 3857037 TI - Short-term effects of fluoride on biosynthesis of enamel-matrix proteins and dentine collagens and on mineralization during hamster tooth-germ development in organ culture. AB - The effect of various concentrations of fluoride (F-) on cell proliferation, matrix formation and mineralization was examined in hamster molar tooth germs in premineralizing and mineralizing stages. The exposure lasted 16 h (mineralizing stages) and 24 h (premineralizing stages) and the F- levels ranged from 2.63 microM to 2.63 mM; [3H]-thymidine, [3H]-proline, 45Ca and 32PO4 were used as markers for cell proliferation, matrix formation and mineralization, respectively. The proline-labelled amelogenins were isolated by sequential extraction with water and formic acid and their nature examined by SDS-urea polyacrylamide electrophoresis. Digestion by collagenase was used to assess the amount of proline incorporated into collagens. F- in concentrations up to 1.31 mM inhibited neither biosynthesis of DNA and amelogenins, nor synthesis of collagens and their hydroxylation. Amelogenins extracted from F- induced, non-mineralizing enamel matrix had the same electrophoretic mobility and the same degree of phosphorylation as amelogenins from normal, mineralizing enamel. However, F- increased the uptake of 45Ca and TCA-soluble 32P dose-dependently, starting with 52 microM. Thus, interference with secretion of enamel matrix by F- takes place at much lower concentrations than required to inhibit biosynthesis of enamel matrix. PMID- 3857038 TI - Purification and subunit structure of alkaline phosphatase from bovine enamel organ. AB - A highly-purified alkaline-phosphatase preparation having a specific activity of 703 U/mg protein was obtained from bovine enamel organ by a series of procedures: butanol extraction, isoelectric and acetone precipitation, ion-exchange, concanavalin A affinity and gel-filtration chromatography. The purified enzyme showed the same properties as kidney-type isozyme and contained carbohydrate moieties which react with concanavalin A. Analysis by polyacrylamide gel electrophoresis showed that the purified enzyme split into half the size of the native molecule (160,000 in mol. wt) after being heated in sodium dodecyl sulphate (SDS) solution and the subunit had no catalytic activity. The results indicate that the enzyme is a dimeric glycoprotein comprised of two identical subunits, each having a molecular weight of 80,000. PMID- 3857039 TI - Short and long latency jaw-opening reflex responses elicited by mechanical stimulation in man. AB - Jaw-opening reflex responses elicited by tapping the chin during maximum clenching in incisal edge-to-edge contact position were studied in 10 healthy subjects. Stimuli were also delivered during weak clenching on a rubber stamp, separating the incisors by approx. 10 mm and protruding the mandible to the edge to-edge incisor relationship. All four central incisors were stimulated simultaneously. With weak stimuli, there was a short-latency (9.5 ms) digastric response which may have had a disynaptic pathway. Taps of moderate strength produced long-latency (20 ms) responses, and sometimes a short-latency (9.5 ms) component as well. Strong (non-painful) taps produced an even longer-latency digastric response, 30 ms or more following the stimulus with less synchronization than earlier responses. Jaw-jerk reflexes occurred 8.5 ms following the tap, independently of the magnitude of the stimulus. Local anaesthesia of the upper and lower incisors abolished the digastric muscle response. Thus large periodontal afferents may be responsible for the early digastric reflex activity and smaller fibres for later effects. Temporal summation of the reflex response probably occurred when all incisors were stimulated simultaneously. PMID- 3857040 TI - The ultrastructure of the dental tissues in dentinogenesis imperfecta in man. AB - Eight primary incisors obtained from a child with dentinogenesis imperfecta (DI) type II were examined histologically using light microscopy and scanning electron microscopy. In both the DI and control teeth, large dentinal canals were observed along the midline of the crown distributed mesial-distally and coursing towards the pulp. Variably-structured mantle dentine was seen in the DI teeth ranging from tubular to virtually atubular. Enamel separation occurred at the dentine enamel junction despite apparently normal scalloping. In the enamel, fractures occurred along accentuated striae of Retzius where ultrastructurally there was prism bending and discontinuity. The structure of DI teeth probably results from a structural or regulatory protein abnormality and irregular epithelial mesenchymal interaction. The combined influence of these factors appears to cause variable histologic appearances and rates of tissue deposition. PMID- 3857041 TI - delta 12-Prostaglandin J2, an ultimate metabolite of prostaglandin D2 exerting cell growth inhibition. AB - L-1210 murine leukemia cells were exposed to prostaglandin D2 (PGD2), 10 micrograms/ml, in culture medium for various time, and subsequent cell growth was observed. More than 24 h exposure to PGD2 was required to inhibit cell growth almost completely. During this period, PGD2 degraded time-dependently into several products. The major product was identified as delta 12-PGJ2 by TLC, UV and mass spectra. When delta 12-PGJ2 was added to cells instead of PGD2, it evoked growth inhibition with much shorter contact time than PGD2. In addition, when the medium containing PGD2 was preincubated at 37 degrees C for 24 h, it elicited growth inhibition with only 6 h contact with cells. Furthermore, when the medium containing PGD2 was changed every 6 h during 24 h exposure time to cells, no significant growth inhibition was observed. These results suggested that PGD2 per se has little, if any, growth inhibitory activity, and delta 12 PGJ2 is an ultimate metabolite exerting growth inhibition. This action appears to be independent of cAMP, since delta 12-PGJ2 was virtually inactive in raising intracellular cAMP levels. PMID- 3857043 TI - Tender point count. PMID- 3857042 TI - Prostaglandin E2 and 2-chloroadenosine act in concert to stimulate bone resorption in cultured murine calvarial bones. AB - 2-Chloroadenosine-induced calcium release from cultured mouse calvarial bones is reduced by inhibitors of prostaglandin production, whereas PTH stimulated calcium release is not. When calvaria were treated with 2-chloroadenosine (10 microM) for 48 hr the production of PGE was significantly increased. The stimulation of PGE synthesis was totally inhibited by indomethacin (1 microM) and partially by hydrocortisone (0.1 microM). When PGE2 and 2-chloroadenosine, at submaximal concentrations, were simultaneously added to cultures of calvarial bones, in which the endogenous production of prostaglandins was reduced by indomethacin, a supraaditive effect on calcium mobilization by the two agents was seen. No such synergism could be observed between PGE2 and PTH or between 2-chloroadenosine and PTH. The degree of stimulation in indomethacin-treated bones by 2-chloroadenosine (i.e. when compared to indomethacin-treated controls) was almost the same as that seen in bones stimulated by 2-chloroadenosine in the absence of indomethacin. These data suggest that 2-chloroadenosine can induce bone resorption by a mechanism independent of stimulation of prostaglandin synthesis but that the amount of 2-chloroadenosine stimulated resorption is enhanced by endogenous and exogenous PGE2. PMID- 3857044 TI - Cytoprotective effect of sofalcone in the rat gastric mucosa. AB - The effect of 2'-carboxymethoxy-4,4'-bis(3-methyl-2-butenyloxy)-chalcone (sofalcone, Solon) on 0.6N HCl-induced gastric lesions in the rat was studied. Sofalcone administered orally or intraperitoneally prevented the formation of gastric lesions induced by the necrotizing agent dose-dependently. Oral administration of sofalcone inhibited the aggravating effect of indometacin on the lesions induced by 0.6N HCl. Intraperitoneal administration of sofalcone also inhibited the aggravation of the lesions by indometacin treatment when it was given 30 min after the administration of sofalcone. This effect of sofalcone was not observed when indometacin was given 30 min before sofalcone. Simultaneous treatment with sofalcone and cimetidine inhibited the formation of the necrotic lesion synergistically. Carbenoxolone and cetraxate given orally protected the gastric mucosa against 0.6N HCl. Their protective effects were decreased when they were given intraperitoneally. These results suggested that the cytoprotective effect of sofalcone does not depend on the route of administration and that there are some interactions between cimetidine and sofalcone in their synergistic cytoprotective effects. PMID- 3857045 TI - [Biotechnology: use and importance of genetic technics]. PMID- 3857046 TI - Guidelines in respect of biotechnological products. PMID- 3857047 TI - Decreased number of PGD2 binding sites on platelets from patients with type IIa hyperlipoproteinemia. AB - Platelets from patients with familial hypercholesterolemia (type IIa hyperlipoproteinemia), a condition associated with a high prevalence of atherosclerosis and its ischemic complications, are claimed to be hyperresponsive to aggregating stimuli. We investigated the platelet responsiveness to and the binding of PGD2, a potent endogenous inhibitor of platelet aggregation via stimulation of adenylate cyclase, in a group of 7 patients affected by IIa hyperlipoproteinemia (IIa HLP) and in a control group of 10 healthy subjects. Inhibition by PGD2 of ADP-induced platelet aggregation was significantly lower in IIa HLP patients than in controls. The number of binding sites for PGD2 of platelets from IIa HLP patients was significantly reduced in comparison with that from controls (93 +/- 19 and 232 +/- 23 receptors/platelet, respectively), whereas the affinity for PGD2 was comparable to that of controls (Kd = 68.8 +/- 19.8 nM in patients and 66.1 +/- 15.9 nM in controls). The reduced number of platelet PGD2 binding sites in IIa HLP patients may account for the impaired sensitivity to PGD2 shown in vitro by platelets and may contribute to the increased tendency to thrombotic manifestations observed in IIa HLP. PMID- 3857048 TI - How to treat musculoskeletal conditions--practical hints for the internist. PMID- 3857049 TI - Hypokalemic periodic paralysis: a rarely considered diagnosis in the pediatric patient. PMID- 3857051 TI - First relieve suffering. PMID- 3857050 TI - [Angiocardiographic diagnosis]. PMID- 3857052 TI - Sick sinus syndrome in an adolescent and a young adult. PMID- 3857053 TI - Electrocardiogram of the month. Acute right ventricular infarction. PMID- 3857054 TI - A status report on diet, nutrition and cancer. PMID- 3857055 TI - [Angiocardiographic diagnosis. Patent ductus arteriosus]. PMID- 3857056 TI - On chemotherapy, pain and cancer. PMID- 3857057 TI - [Pathology review. Gouty nodule]. PMID- 3857058 TI - Right ventricular outflow tract reconstruction with the Revuelta monocusp patch. PMID- 3857059 TI - Attitudes toward post-mastectomy reconstruction in Puerto Rico. PMID- 3857060 TI - Illegal practice of dentistry. PMID- 3857061 TI - "The source, frequency and extent of bacterial contamination of dental unit water supplies". PMID- 3857062 TI - 'Pertinent considerations in oral pigmentation'. PMID- 3857063 TI - 'Post-gustatory sweating following submandibular salivary gland removal'. PMID- 3857064 TI - Endodontics in practice. Diagnosis and treatment planning. PMID- 3857065 TI - An assessment of the relative dustiness of different alginate impression materials under simulated working conditions. PMID- 3857066 TI - Discussion paper from the Dental Technicians Education and Training Advisory Group. PMID- 3857067 TI - Domestos Health Education Award 1984. The Good Teeth Programme. PMID- 3857068 TI - Dentistry behind the iron curtain. PMID- 3857070 TI - Differences of immunoglobulin secreting cells in bone marrow from those in circulation: relevance to their development. AB - The surface markers of immunoglobulin secreting cells (ISC) in bone marrow and peripheral blood were analysed. Circulating ISC bear surface Ig and Ia-like antigens. However, these markers were not detectable on ISC in bone marrow. Fc and complement receptors were not present on circulating ISC. The areas of plaques corresponding to Ig secretion by bone marrow cells were always larger than those of peripheral blood cells. Although the majority of ISC were typical plasma cells, plasmacytoid lymphocytes were observed in peripheral blood. These findings seem to indicate that ISC in the peripheral blood are less advanced in their differentiation and maturation pathway from B lymphocytes to plasma cells than those in bone marrow. ISC in mesenteric lymph nodes exhibited nearly the same phenotype as peripheral cells. PMID- 3857069 TI - Red wine contains a potent inhibitor of phenolsulphotransferase. AB - Many ethanolic drinks, especially red wine, contain potent inhibitors of phenolsulphotransferase. At a dilution of 1/75 from the original beverage, extracts from six types of red wine inhibited human platelet phenolsulphotransferase P by a mean of 99% and human platelet phenolsulphotransferase M by 12%. Such extracts had no significant effect on rat liver monoamine oxidase A or human platelet monoamine oxidase B. The inhibitors, which have not yet been identified, can be extracted into ethyl acetate at acid or neutral pH. Thus, they are not monoamines. Flavonoid phenols are plausible candidates. As phenolsulphotransferase M and P are involved in the metabolism of many phenols, including drugs, the inhibition of these enzymes could result in the enhancement of pharmacological potency and have important clinical consequences. PMID- 3857071 TI - The myelodysplastic syndromes: different evolution patterns based on sequential morphological and cytogenetic investigations. AB - Serial morphological and cytogenetic investigations were performed in 46 patients with the myelodysplastic syndrome (MDS). Twenty-one patients (45.5%) progressed to AML (greater than 30% blasts in bone marrow smears). Based on sequential determinations of percentages of bone marrow blasts, three patterns of evolution were observed in MDS. Patients with evolution pattern A (48%) had an apparently stable disease with minimal or no increase in bone marrow blasts. Exceptionally they developed new or additional chromosomal anomalies during the course of their disease. Cases in this group, who showed no abnormal localization of immature myeloid precursors (ALIP) at time of diagnosis experienced prolonged survival (median: 43 months), while ALIP positive patients had shorter survival times (median: 14 months), with high probability of early death from infections and/or bleeding problems. Patients with evolution pattern B (28%) initially had a morphologically stable disease, comparable to cases with evolution pattern A, but showed an abrupt shift from MDS to AML. Most of these patients (82%) were ALIP positive and a substantial proportion (46%) showed karyotype anomalies at diagnosis. The abrupt shift to AML in these patients was frequently (61.5%) associated with additional cytogenetic anomalies. Patients with evolution pattern C (24%) showed a gradual increase in bone marrow blasts. The majority of these cases (8/11) ultimately developed acute myeloid leukaemia (gradual progression to AML), whereas some patients (3/11) died from infections and/or haemorrhagic complications before they had reached the level of clinical AML. All of these patients were ALIP positive at diagnosis and no additional cytogenetic alterations occurred during evolution. Acquisition of new karyotypic anomalies during the course of MDS was almost invariably associated with abrupt shift to AML. From this retrospective study we conclude that evolution in MDS shows two important aspects, which seem to be preponderant in determining the course and outcome of the disease: one is the proliferative capacity and resulting growth advantage of the neoplastic clone over normal haematopoiesis, as measured by increasing percentages of bone marrow blasts in sequential aspirates; the other one is instability of the clone. Unstable clones have a high propensity to further intraclonal changes; they are expressed morphologically by the abrupt increase in bone marrow blasts and cytogenetically by the acquisition of new or additional karyotype anomalies.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3857072 TI - Acute lymphoblastic leukaemia in adults: results of a 'total-therapy' programme in 47 patients over 15 years old. AB - For the last 13 years, 47 patients with ALL over 15 years old (range 15-72; median 21) entered a 'total-therapy' programme. All cases received a 6-8 week induction course of PRD, VCR, DRB and/or L-ASN. Prophylaxis of CNS was done by cranial radiotherapy plus i.t. MTX in 32/45 patients who attained complete remission (CR). After CR, subsequent therapy involved a programme of maintenance with 6MP and MTX at full doses. Pulses of intermittent reinforcement (PRD, VCR and DRB) were done for 2 weeks, every 3 months, for at least 3 years. CR was achieved in 42/47 patients (89.3%). The median relapse-free survival of the patients who attained CR was 57 months, with an 8-year estimated disease-free survival rate of 43% for those cases. If actuarial assumptions were to be sustained, it would indicate an encouraging cure rate of 38% of all our adult ALL patients (mainly in those cases between 15 and 30 years old). PMID- 3857073 TI - Decrease in protein C in L-asparaginase-treated patients. PMID- 3857074 TI - Prediction of response of acute non-lymphocytic leukaemia to therapy with 'high dose' cytosine arabinoside. PMID- 3857075 TI - Prolonged survival in chronic granulocytic leukaemia after busulphan induced hypoplasia and karyotype conversion. PMID- 3857077 TI - Fetal death following extra-amniotic prostaglandin gel. Report of two cases. PMID- 3857076 TI - Maternal plasma prostaglandin E2 metabolite levels during human pregnancy and parturition. AB - Because of methodological problems associated with the measurement in biological fluids of both prostaglandin E2 (PGE2) and its unstable principal circulating metabolite 13,14-dihydro-15-keto-PGE2 (PGEM), there is little reliable information on these prostaglandins in human pregnancy and parturition. The recent discovery of a stable PGEM degradation product 11-deoxy-13,14-dihydro-15 keto-11 beta, 16 epsilon-cyclo-PGE2 (bicyclo-PGEM) has provided a means of studying endogenous plasma levels of PGEM which circumvents the problems encountered with direct measurements of PGE2 and PGEM. Using a radioimmunoassay for bicyclo-PGEM we have therefore determined maternal peripheral plasma PGE2 metabolite levels during human gestation. PGE2 metabolite levels did not alter significantly during the second or third trimesters nor during labour. This contrasts with maternal peripheral plasma levels of the principal circulating metabolite of PGF2 alpha 13,14-dihydro-15-keto-PGF2 alpha (PGFM) which increases several fold during labour. Compared to PGE2 therefore, PGF2 alpha may be quantitatively the more significant prostaglandin associated with human parturition. PMID- 3857078 TI - Iduronate sulfatase from human placenta. AB - The major enzyme component of iduronate sulfatase from human placenta was purified 30 000-fold by a five-step procedure. Sucrose gradient centrifugation of the native enzyme gave a molecular weight estimate of 80 000 +/- 10 000. Electrophoresis in sodium dodecyl sulfate of the enzyme reduced with mercaptoethanol showed a protein band of Mr 82 000. We suggest that the enzyme is composed of a single polypeptide chain of Mr 80 000-90 000. PMID- 3857079 TI - Marrow culture studies in adult acute myeloid leukemia at diagnosis and during complete remission. AB - We used the human placental conditioned medium stimulated single layer agar culture technique to study the in vitro growth of marrow cells from 62 adult patients with acute myeloid leukemia (AML). Bone marrow cells were cultured from 50 patients at the time of initial diagnosis, 19 patients in early remission and 20 patients during their full complete remission. Marrow cultures from untreated patients exhibited heterogeneous growth patterns ranging from complete growth failure to excessive microcluster formation. We classified the growth patterns into 4 groups: (1) Gr I: normal growth, (2) Gr II: no growth, (3) Gr III: decreased growth, (4) Gr IV: excessive growth of microclusters. At presentation, none had Gr I growth; Gr II growth was observed in 23; Gr III in 14 and Gr IV in 13. A predominance of no growth were seen in M1 and M3 subtypes, while Gr IV growth was more commonly observed in M2 or M4 subtype. We were unable to correlate the culture findings with age or white cell count. The present results not only indicated that AML at diagnosis was characterized by abnormal granulopoiesis but also demonstrated that leukemic progenitor cells were heterogeneous with different capacities to express their proliferating potential in vitro. Except few with decreased growth, the growth characteristics generally returned to normal with successful remission induction. Both Gr II and Gr IV growth patterns were not observed either in early remission or during full complete remission. PMID- 3857080 TI - Blood lymphocyte volumes and diameters in patients with chronic lymphocytic leukemia and normal controls. AB - The electronic modal lymphocyte volumes of 151 patients with chronic lymphocytic leukemia (CLL) and 305 normal controls were determined by the hydrodynamically focused multi-channel Coulter TF analyser. The mean volumes of the normally distributed groups were 166 +/- 19.3 (range 126-216) fl in patients with CLL and 206 +/- 14.4 (range 126 +/- 246) fl in normal controls. The calculated cell diameters were 6.8 (6.2-7.4) micron and 7.3 (6.8-7.8) micron respectively. Our data do not support previous reports about relations between cell size and clinical stages of the Rai and Binet classifications. PMID- 3857081 TI - [Bone sarcoma and malignant tumors of the retina]. AB - Secondary bone sarcomas are frequent among children who have been treated previously for a retinoblastoma. The main point is that these bone sarcoma occur almost always after a bilateral retinoblastoma and more often in the irradiated area; from these, the classical concept of "radiocancer" was generally admitted. However, since many authors reported bone sarcomas occurring in a different location from the irradiated area, radiotherapy cannot be by itself the causative factor of these secondary bone sarcomas. Therefore the genetical factor is probably one of the predisposing factor. The authors report 6 cases of bone sarcomas with a review of the literature of bone sarcomas occurring in the irradiated field or not, for children "cured" of retinoblastoma. PMID- 3857083 TI - The role of academic medicine in patient education. Committee on Medicine in Society in cooperation with Committee on Medical Education. PMID- 3857082 TI - [Treatment of acute myeloid leukemia with amsacrine and high-dose cytosine arabinoside: a phase II trial]. AB - Ten patients with acute myeloid leukaemia on failure or relapse were treated by Amsacrine and high-dose (12 g/m2) Cytosine Arabinosyl (phase II trial). Four patients achieved complete remission, over six months in one instance. Hematologic toxicity was important but extra-hematologic toxicity was mild. These two drugs could be used as induction or reinforcement treatment in acute myeloid leukaemia. PMID- 3857084 TI - The teaching of patient education concepts on therapeutic compliance to medical students. PMID- 3857085 TI - The role of academic medicine in patient education. State of the art in research and evaluation. PMID- 3857086 TI - The role of academician as a teacher of patient care. PMID- 3857087 TI - Patient education models. PMID- 3857088 TI - The role of academic medicine in patient education. Workshop summary: "educating physicians". PMID- 3857089 TI - The role of academic medicine in patient education. In pursuit of hypertension program problems. PMID- 3857090 TI - The role of academic medicine in patient education. Workshop summary: what can be learned from other health professionals. PMID- 3857091 TI - The role of academic medicine in patient education. Implementing change within the academic medical center. PMID- 3857092 TI - The role of academic medicine in patient education. Implementing change: a view from a medical school. PMID- 3857093 TI - Patient education: a public health point of view. PMID- 3857094 TI - The role of academic medicine in patient education. Panel discussion: implementing changes within the academic medical center. PMID- 3857095 TI - Integrating patient education into the medical school setting: balancing needs and priorities. PMID- 3857096 TI - The role of academic medicine in patient education: report of findings and recommendations. Committee on Medicine in Society. Committee on Medical Education. PMID- 3857097 TI - Eating disorders in schizophrenia. AB - An investigation of eating disorders in a population of chronic schizophrenic patients confirmed that there is a distinction between eating disorders of psychotics and eating disorders of the young. All the DSM-III criteria of eating disorders, except one, were observed among the psychotics although no patient fulfilled the necessary criteria for an eating disorder diagnosis except for one anorexic woman. All varieties of schizophrenic eating disorder were reported: in two-fifths of the patients eating disorders were associated with delusions and in one sixth with hallucinations; more than half of the patients had deviant eating behaviour which was not associated with any thought or perceptual disorders. Schizophrenic eating disorders were common, yet not disturbing to the social life of the open mental hospital or to that of the community surrounding it. PMID- 3857099 TI - Try using transactional analysis for better communication. PMID- 3857098 TI - Early onset of hindlimb paw-shake responses in spinal kittens: new perspective in motor development. AB - Normal kittens and kittens spinalized (T12) at 14 days of age were tested for onset of paw-shake responses (PSR) in fore and hindlimbs. In normals, onset followed a cephalocaudal pattern that was coincident with the development of stable posture, 21-28 days of age. In spinals, onset of hindlimb PSRs preceded that of the forelimb and occurred soon after cordotomy, independent of posture development. These findings suggest that in the neonate, spinal networks responsible for coordinating PSRs are normally inhibited until the response can be supported by stable posture. PMID- 3857100 TI - The break-up of the doctor's family. PMID- 3857101 TI - Kinetic comparison of the 3 beta-hydroxysteroid dehydrogenase activity in human placenta, chorion laeve, and ovary. AB - Recent studies from our laboratory and others have shown that Km values for steroid substrates of the 3 beta-hydroxysteroid dehydrogenase in the human placenta were in the nanomolar range compared with micromolar values previously described. The purpose of the present study was to measure the kinetic parameters of the 3 beta-hydroxysteroid dehydrogenase in other human tissues, namely the ovary and chorion laeve, and to determine whether they were similar to those of the placental enzyme. In chorion laeve microsomes the 3 beta-hydroxysteroid dehydrogenase had Km values for dehydroepiandrosterone and pregnenolone similar to those found in placenta. Microsomes from human ovaries, on the other hand, had Km values for both substrates 10- to 20-fold higher. However, the ability of various steroids to inhibit the ovarian enzyme was similar to that previously described from the placenta and the chorion laeve. PMID- 3857102 TI - Inhibition of progesterone secretion by a 3 beta-hydroxysteroid dehydrogenase inhibitor in late pregnant sheep. AB - The role of progesterone in the initiation of parturition in the sheep is unclear. Whether a decrease in plasma progesterone is the essential prerequisite for the initiation of parturition or whether other factors also maintain uterine quiescence until delivery is not known. The effect of withdrawal of progesterone on the initiation of parturition has been investigated by intravenous administration of trilostane, a 3 beta-hydroxysteroid dehydrogenase delta 5-4 isomerase inhibitor, to late pregnant sheep. Twenty-five or 100 mg trilostane caused a precipitous decrease in plasma progesterone to about 30% of preinjection levels. Progesterone remained depressed for up to 7 days after treatment. 13,14 Dihydro-15-keto-prostaglandin F2 alpha (PGFM) became elevated between 7 and 36 h after trilostane injection but gradually returned to preinjection levels during the subsequent 36 h, at a time when plasma progesterone was still depressed. Four of 11 animals treated with 100 or 200 mg trilostane aborted prematurely at a time when plasma PGFM was maximal and plasma progesterone minimal. There were no consistent changes in plasma estradiol-17 beta or ovine placental lactogen concentrations after treatment with trilostane. It is suggested that a decrease in plasma progesterone will cause a transient increase in plasma PGFM concentrations which can lead to the premature initiation of parturition. In some instances the myometrium does not appear to respond to the elevated PGFM concentrations even when the estrogen:progesterone ratio is elevated by a decrease in plasma progesterone. PMID- 3857103 TI - Anorexia and bulimia support group helping victims' families. PMID- 3857104 TI - Myelodysplastic syndrome or acute myeloid leukemia? A study of 28 cases presenting with borderline features. AB - Some patients present borderline features between acute myeloid leukemia (AML) and typical myelodysplastic syndromes (MDS): an excess of blasts insufficient to conclusively diagnose AML, yet above the figures usually compatible with MDS or the presence of Auer rods associated with a moderate excess of blasts. This presents considerable difficulties in diagnosis and management. The authors studied 28 such cases using the French-American-British Co-operative Group (FAB) classification, which groups them into a separate category termed "refractory anemia with excess of blasts in transformation" (RAEB-T). This was found to be a heterogenous group. Certain patients (4/28) had a previously established myelodysplasia, but most presented directly as RAEB-T. Two very different pictures emerged: a few patients (4/28) were young, with presentation and evolution similar to classic AML, for whom combination chemotherapy was effective; the majority (20/28) were older, with more varied clinical and cytologic presentation, for whom chemotherapy was of little effect and who presented a picture resembling classic RAEB with a median survival of 10 months. PMID- 3857105 TI - Is hypereosinophilic syndrome a malignant disease? AB - A patient with an abdominal mass for 4 years developed hypereosinophilia and weight loss. Bone marrow aspirations and biopsy specimens showed hypercellularity of eosinophils. No cause for hypereosinophilia was found. Biopsy specimens of several organs, including the abdominal mass, showed eosinophilic infiltration with reactive fibrosis in some. Cytogenetic studies of the bone marrow before treatment with cytoxic drugs showed chromosomal abnormalities. Several of these have been reported in association with acute or eosinophilic leukemias. Based upon these findings, the authors believe that the patient had eosinophilic leukemia and that the abdominal mass probably was an eosinophilic chloroma. PMID- 3857106 TI - Chromosome studies in 17 patients with the Sezary syndrome. AB - Chromosome studies were done on phytohemagglutinin-stimulated peripheral blood from 17 patients with Sezary syndrome. A chromosomally abnormal clone was found in five patients: each patient had an abnormal chromosome 6 and four had an abnormal chromosome 1. Six patients without abnormal clones had more than 20% metaphases with random heteroploidy and sporadic structural anomalies. Only normal metaphases were seen in four patients, and no metaphases were found in two. Four of the five patients with an abnormal clone died, and their median survival from chromosome analysis was 6 months; only one of these patients died of lymphoma. The six patients with increased heteroploidy had long survivals and no apparent malignant process. Two of the four patients with normal metaphases died of malignant disease: one had lymphoma and the other squamous cell carcinoma. A third patient with normal chromosomes died of extensive visceral cutaneous T-cell lymphoma. PMID- 3857107 TI - Noninvolvement of chromosome 16 in karyotype evolution of acute myeloid leukemia in a patient with a heritable fragile site on 16q22. AB - A fragile site on the long arm of chromosome #16 (q22) was detected in a 24-year old man with pancytopenia. During the course of the disease he developed an inverted duplication of region q11-12 of chromosome #1 and a translocation between chromosomes #9 and #13: t(9;13)(p22;q32). These abnormalities, as well as an additional iso-like marker chromosome that consisted of one normal 9p and the abnormal 9p arm, were detected in Epstein-Barr nuclear antigen-positive B-cell cultures. Two years later, evolution of the abnormal clone with loss of chromosome #7 and, subsequently, chromosome #22 occurred in connection with development of acute myeloid leukemia. Although the heritable fragile site on chromosome #16 was present in all cell populations investigated, it was not involved in the evolution of the abnormal karyotype. This fragile chromosome #16 also was found in 4 of 11 family members in whom chromosome analysis was performed, thus suggesting this aberration was inherited in a dominant autosomal pattern. The incidence of the heritable fragile site in normal and leukemic cells of the patient, as well as stimulated blood cultures of his relatives, are reported. In addition, the possible relationship between this constitutional chromosome breakage syndrome and the occurrence of leukemia is analyzed. PMID- 3857108 TI - Cytogenetically distinct leukemic cell lines displaying in vitro specific proliferative and differentiation capacities may account for early disease relapse in the blast phase of CML. AB - The cytogenetic features and the proliferative and differentiation capabilities of blast cell fractions purified on a density gradient were studied in one patient with chronic myeloid leukemia (CML) in blast crisis, both at the emergence and at relapse of the disease. The results show that relapse was due to the appearance of a new leukemic cell line that was characterized by peculiar chromosomal, growth, and differentiation features, which seemingly accounted for early refractoriness to therapy and disease progression. PMID- 3857109 TI - Modal karyotype of human leukemia cell line, K562 (ATCC CCL 243). AB - The chromosome composition of the human leukemic cell line, K562, deposited at the American Type Culture Collection (ATCC) (CCL 243), was studied and further compared with those reported by other laboratories. In CCL 243, the modal karyotype had 55 normal and 14 constitutive marker chromosomes and occurred in nearly 50% of the cultured cell population. Other variant karyotypes were observed either at a low frequency in coexisting minor cell types or only once in all other analyzed metaphases. Normal chromosome #9 and the chronic myeloid leukemia (CML) specific Ph/t(9;22) were absent. It appears that karyotypes of most K562 cultures distributed world-wide are similar to each other, with the stable modal chromosome number, and therefore, the modal karyotype presented here should be useful in karyotypic identification of a cell line. PMID- 3857110 TI - A variant 15;17 translocation in a patient with acute promyelocytic leukemia. AB - We report a 36-year-old male with typical features of acute promyelocytic leukemia (APL) in whom a new variant 15;17 translocation, t(8p+;17q-), was found. Using G- and Q- banding techniques, the chromosome breaks were found to be near the junction of 8p12 and 8p21 and band 17q12, respectively. The breakpoint on 17q in our case was similar to that in previously described cases with a standard translocation (15;17). Consequently, this chromosome break or rearrangement at band 17q12, rather than the recipient site of translocation of the deleted material, appears to be of crucial importance in the genesis of APL. PMID- 3857111 TI - A review of the t(1;19) breakpoints in acute lymphocytic leukemia. PMID- 3857112 TI - Translocation (4;11;17) in a case of acute lymphoblastic leukemia. PMID- 3857113 TI - Translocation (11;17) (q24;q21) as a variant of translocation (9;11)(p22;q24) in acute monoblastic leukemia. PMID- 3857114 TI - Switch in differentiative response to maturation inducers of human promyelocytic leukemia cells by prior exposure to alkaline conditions. AB - The myeloid lineage to which HL-60 promyelocytic leukemia cells will differentiate in response to a chemical differentiation inducer can be switched by altering the pH of the growth medium. Cells passaged previously at pH 7.2 become neutrophiles, and those passaged previously at pH 7.6 become eosinophiles after 5 to 7 days of culture in the presence of 0.5 mM butyric acid. Butyric acid and its analogues are unique in that all other chemical maturation inducers tested, such as dimethyl sulfoxide and retinoic acid, promote neutrophilic differentiation regardless of the prior culture history of the cells. This suggests that lineage commitment and maturational commitment are mechanistically separate processes in this multipotential cell line and can be independently manipulated experimentally. PMID- 3857115 TI - Reversible effects of retinoic acid on glycosaminoglycan synthesis during differentiation of HL-60 leukemia cells. AB - Glycosaminoglycans (GAGs) play an important role in cell-cell and cell-substratum interactions, and undergo specific changes during neutrophil development. Previous studies (Luikart, S.D., Maniglia, C. A., and Sartorelli, A. C. Cancer Res., 44: 2907-2912, 1984) have shown that both dimethyl sulfoxide and 4-beta phorbol-12-beta-myristate-13-alpha-acetate decreased GAG production by a hypoxanthine-guanine phosphoribosyl transferase-deficient clone of HL-60 promyelocytic leukemia cells prior to the appearance of a mature myeloid or monocytoid phenotype. To expand these investigations further, GAGs were analyzed by cetylpyridinium chloride precipitation and DEAE-Sephacel ion-exchange chromatography after labeling of parental HL-60 cultures with [35S]sulfate and D [3H]glucosamine for 6 h, following treatment with 1 microM all-trans retinoic acid (RA). Chondroitin sulfate represented the major GAG species produced, although endo-beta-galactosidase-sensitive undersulfated macromolecules which possibly might be keratan sulfate, were also identified. GAG production decreased over a time period of 144 h in culture. RA treatment reduced the amount of radiolabeled cell-associated GAGs by 50% after 48, 96, and 144 h of exposure. In contrast, commitment to myelocytic maturation of the majority (i.e., approximately 60%) of the cells occurred between 72 and 96 h of RA treatment. Concurrently with the appearance of mature granulocytic cells, two-thirds of the radiolabeled GAGs were recovered from the medium, compared to one-third in untreated cultures, a phenomenon that resulted in an overall alteration in the distribution of GAGs. When RA was removed by washing after either 48 h (i.e., precommitment to differentiation) or 96 h (i.e., postcommitment to differentiation), a 1.5- to 3.5-fold increase in GAG production was noted 48 h later; this increase was unrelated to the medium change or to alterations in cell cycle distribution. The amounts of endo-beta-galactosidase-sensitive macromolecules were unaltered. Thus, although 1 microM RA inhibited the synthesis of chondroitin sulfate by HL-60 leukemia cells, this inhibition was reversible by removal of the drug and appeared to be unrelated to the commitment to myelocytic maturation. PMID- 3857116 TI - Stability, targeting, and biodistribution of scandium-46- and gallium-67-labeled monoclonal antibody in erythroleukemic mice. AB - Using a monoclonal antibody specific for the Mr 70,000 glycoprotein of Rauscher erythroleukemia virus, we have determined the optimal conditions for conjugation with the cyclic anhydride of diethylene triamine pentaacetic acid and subsequent labeling with 46Sc. The conjugates were shown to retain their specificity and activity in vitro and to target specifically to virus-infected spleen cells in vivo. The stability of the 46Sc:diethylene triamine pentaacetic acid-antibody conjugates in vivo was studied using immunoaffinity chromatography; 25% of the isotope bound to transferrin, and 75% remained bound to the antibody conjugates. These results are discussed with respect to the potential for labeling antibodies with 47Sc for use in imaging and therapy. Studies with 111In-labeled antibody were used for comparison. Labeling with 67Ga was also performed; these labeled conjugates showed adventitious binding of isotope to the antibody and lack of stability of diethylene triamine pentaacetic acid-chelated gallium. Free EDTA was shown to stably incorporate 67Ga. PMID- 3857117 TI - Identification of endogenous inhibitory growth factors from a human colon carcinoma cell line. AB - A line of human colon carcinoma cells, designated MOSER, was established which synthesized tumor-inhibitory factor (TIF) and transforming growth factor (TGF) activity. Both activities were found in serum-free conditioned medium and in cell extracts. The activities coelute on Bio-Gel P-10 in acetic acid, but can be completely separated by reverse-phase high-pressure liquid chromatography. The TIF and TGF activities were acid and heat stable and were sensitive to trypsin and dithiothreitol. MOSER cell TIF prevented the anchorage-independent growth of the more differentiated colon carcinoma cell lines tested but did not affect the less differentiated lines. Using anchorage-dependent growth conditions, the effect of TIF appeared to be noncytotoxic and partially reversible. Purified TGF stimulated the growth of normal rat kidney fibroblasts and the slow-growing CBS colon carcinoma cell line but did not stimulate MOSER cell growth. MOSER cells contain both positive (TGF) and negative (TIF) factors with relative concentrations that may be important parameters in the regulation of cell growth. PMID- 3857118 TI - Analysis of commitment of human leukemia HL-60 cells to terminal granulocytic maturation. AB - Analysis of commitment of human promyelocytic leukemia HL-60 cells to terminal granulocytic maturation induced by dimethyl sulfoxide (DMSO) or retinoic acid (RA) was accomplished using biochemical measurements and a plasma clot clonal assay system that permits a high plating efficiency of 40 to 60%. Commitment to granulocytic maturation occurs very rapidly. When cells are exposed to these inducers for only 8 to 18 h, an interval much shorter than a single generation time, and are then subcultured in inducer-free plasma clots, they demonstrate a decrease in proliferative capacity and form colonies composed of mature nitroblue tetrazolium (NBT)-positive cells along with occasional colonies containing both NBT-positive and NBT-negative cells; in both types of colony, the NBT-positive cells are widely dispersed. Undifferentiated HL-60 cells give rise to compact NBT negative colonies of large size without cell migration. HL-60 cell differentiation induced by either DMSO or RA is associated with a progressive decline in both DNA and RNA synthesis; this includes transcriptional inactivation of ribosomal DNA sequences. In contrast to DMSO, which induces development primarily of metamyelocytes, RA treatment leads to the accumulation of more mature band and segmented neutrophils; sequential exposure of cells pretreated with DMSO to RA alone fails to cause rapid appearance of segmented neutrophils. From these studies, we conclude that HL-60 cells become very rapidly committed to terminal maturation and that DMSO and RA appear to induce granulocytic maturation via two different mechanisms. PMID- 3857119 TI - Synergistic effect of 4-hydroperoxycyclophosphamide and etoposide on a human promyelocytic leukemia cell line (HL-60) demonstrated by computer analysis. AB - Autologous stem cell transplantation using cryopreserved bone marrow offers the opportunity to rescue patients from hematopoietic toxicity caused by intensive chemotherapy. This approach is potentially useful for high-risk leukemias as well as for other cancers. The development of suitable methods for purging malignant cells from the bone marrow will offer a better chance of success for autologous stem cell transplantation. In this paper, we describe our efforts at purging myeloid cells. HL-60, a promyelocytic leukemia cell line, was used as a model. 4 Hydroperoxycyclophosphamide (4-HC) and VP-16-213 (VP-16) (either alone or in combination) were used to treat HL-60 cells and normal bone marrow. The cytotoxic effect of 4-HC (29.2 micrograms/ml; 100 microM) upon the HL-60 cell line was 99.8 +/- 0.12% (SE), and the colony-forming units-granulocyte, macrophage (CFU-cs) of normal bone marrow was inhibited by 82.5%. VP-16, at a concentration of 25 micrograms/ml (42.5 microM), can kill 99% of HL-60 cells and inhibit 72.7% of the CFU-cs. A drug mixture containing 4-HC (29.2 micrograms/ml) and VP-16 (10 micrograms/ml) (combination ratio, 1:0.342) reduces HL-60 cells to an undetectable number, and the CFU-cs were inhibited by 87.2%. The laboratory data were further analyzed for the synergistic effect of these two drugs by quantitative determination of the median effect plot and the multiple drug equation recently described by Chou and Talalay (Adv. Enz. Regul., 22: 27-55, 1984). Interactions of two drugs at different effect levels and at different combination ratios were then determined by computer simulation. At high effect levels, 4-HC and VP-16 in combination gave a synergistic cytocidal effect on HL 60 leukemic cells and gave an antagonistic inhibitory effect on normal bone marrow CFU-cs. This combination greatly increases the safety margin. Computer simulation of a dose effect relationship has also shown that the 4-HC:VP-16 combination ratio of 1:0.342 yields a better selective effect than a ratio of 1:0.856. This quantitative analysis suggests that the combination of these two drugs at the selected dose level offers a good method for purging nonlymphoblastic leukemia cells. PMID- 3857120 TI - Increased glucocorticoid receptor concentration in macrophage differentiation of myeloid leukemia cells with 12-O-tetradecanoylphorbol-13-acetate. AB - HL60 cells, human promyelocytic leukemia cells, can be induced to differentiate into more mature myeloid forms by dimethyl sulfoxide (DMSO) or retinoic acid (RA) and into macrophage-like cells by 12-O-tetradecanoylphorbol-13-acetate (TPA) or related compounds. Macrophage differentiation of HL60 cells by TPA treatment induced a 3- to 4-fold increase in glucocorticoid receptor concentration per cell and a 2- to 3-fold increase in glucocorticoid receptor concentration per mg of protein. The ability of TPA derivatives to increase glucocorticoid receptor concentration paralleled their ability to induce macrophage differentiation. Macrophage differentiation of other myeloid leukemia cells by TPA treatment induced a 2- to 3-fold increase in glucocorticoid receptor concentration per cell. Exposure of T-lymphoblasts or erythroleukemia cells to TPA did not affect glucocorticoid receptor concentration. Myeloid differentiation of myeloid leukemia cells by DMSO or RA induced no significant change in glucocorticoid receptor concentration. The increase in glucocorticoid receptor concentration in macrophage differentiation of myeloid leukemia cells with TPA was considered to depend, not on TPA treatment, but on the process of macrophage differentiation. Further, glucocorticoid receptor concentration can be a sensitive marker of macrophage differentiation of myeloid leukemia cells. PMID- 3857121 TI - Isolation of tumor cell growth-inhibiting factors from a human rhabdomyosarcoma cell line. AB - Two types of growth-modulating factors were derived from the serum-free conditioned media of a human rhabdomyosarcoma cell line, A673. One type, Mr 18,000 to 22,000, competes for binding to epidermal growth factor receptors and enhances the growth of normal and tumor cells in soft agar. It has all of the biological properties ascribed to transforming growth factor type alpha (TGF alpha). A673 cells also produce factors which inhibit the growth of human tumor cells in soft agar and in monolayer cultures. These tumor cell growth-inhibiting factors (TIFs) are acid- and heat-stable peptides. The major TIF activities have molecular weights in the ranges of greater than 28,000, 18,000 to 22,000, 10,000 to 16,000, and 5,000 to 10,000 and do not possess the antiviral activity associated with interferon. Partially purified preparations of TIF-1 (Mr 10,000 to 16,000) inhibit the growth of all human tumor cell lines tested and stimulate the growth of normal human fibroblasts and epithelial cells in monolayer cultures. The growth of human lung carcinoma A549 cells in soft agar, which was enhanced by treatment with TGF alpha from A673-conditioned media, was inhibited by treatment with TIF-1 derived from the same media. The ratio of the two types of tumor cell-derived, growth-modulating factors (TIFs and TGF alpha), which are antagonistic in their biological effects, may determine the capacity of tumor cells for anchorage-independent growth. PMID- 3857122 TI - Changes in cell surface glycoproteins and antigens during differentiation of the human myeloid leukemia cell lines ML-1, ML-2, and HL-60. AB - Two recently derived human myeloid leukemia cell lines, ML-1 and ML-2, were induced to differentiate by treatment with 12-O-tetradecanoylphorbol-13-acetate (TPA) or with retinoic acid for 5 to 12 days. They were then compared with similarly treated promyelocytic HL-60 cells. TPA-treated ML-1 and ML-2 cells became firmly surface adhesive with a fibroblastoid morphology, while TPA-treated HL-60 cells adhered as rounded macrophages. In contrast, retinoic acid induced only slight morphological changes in all three cell lines. The differentiation related alterations of the surface membrane glycoproteins were followed by polyacrylamide gel electrophoresis after surface labeling by the periodate-NaB3H4 or galactose oxidase-NaB3H4 methods. The expression of surface membrane differentiation antigens was analyzed with a panel of monoclonal antibodies against myeloid, myelomonocytic, monocytic, and granulocytic determinants using FACS IV flow cytometry. The acquisition of surface adhesiveness by TPA-treated ML 1 and ML-2 cells coincided with the appearance of membrane surface proteins of varying molecular weights, ranging between 90,000 and 155,000, which were not labeled in untreated ML-1 and ML-2 cells. These findings and the results obtained by monoclonal antibody staining and FACS analysis indicate that treatment of the myeloid lines ML-1, ML-2, and HL-60 by TPA induced the expression of antigenic and membrane molecular features compatible with a monocytic-macrophage phenotype, while treatment by retinoic acid induced granulocytic differentiation. The ML-1 and ML-2 cells offer interesting models for studies on the membrane molecular events occurring when nonadherent, monocytic cells become surface adherent. PMID- 3857123 TI - Estradiol 17 beta-hydroxysteroid dehydrogenase, a marker of breast cancer hormone dependency. AB - Intratumoral activity of the progesterone-dependent enzyme 17 beta-hydroxysteroid dehydrogenase (E2DH) was measured in 114 patients with breast cancer (33 pre- and 81 postmenopausal) before and/or after 8 days of a progestin treatment (lynestrenol, 10 mg/day). In 12 postmenopausal patients, the ability of E2DH to be stimulated by lynestrenol was compared to estradiol receptor (ER) and progesterone receptor (PR) levels. In premenopausal patients, E2DH was higher when tumors were excised in the luteal phase than when excised in the follicular phase. In postmenopausal patients, E2DH was higher after progestin treatment. However, E2DH stimulation by lynestrenol depended on receptor levels. It was most often markedly stimulated in ER-positive, PR-positive tumors. It remained low in ER-negative, PR-negative tumors. Intratumoral measurement of the progesterone dependent enzyme E2DH in breast cancer after progestin treatment could therefore provide a fine and reliable index of the presence and functional character of PR and hormone dependency of the tumor. PMID- 3857125 TI - Mathematical model of acute myeloblastic leukaemia: an investigation of the relevant kinetic parameters. AB - A simple model of acute myeloblastic leukaemia (AML) development is introduced, explicitly including cell growth, cell differentiation and cell-cell interaction. Each of these processes is described by a single model parameter. It is hypothesized that the leukaemic cell is characterized by an alteration of only one of these processes. The kinetic behaviour of the AML system is examined separately for possible alterations of each of the three parameters describing the three processes involved. It is shown that, on the basis of the existing data on AML kinetics, the alteration of the growth and cell-cell interaction parameters can be eliminated as a possible source of AML. Thus kinetic data support the modification of the differentiation process as the origin of the AML state. Further, the growth characteristics of normal and leukaemic cells in the presence of each other are analysed. It is shown how the initial growth of leukaemic cells depends on the difference in the differentiation of normal and leukaemic cells and how the same difference determines the decay of normal cells in the presence of the predominantly leukaemic population. Correlations between the kinetic parameters of the normal and leukaemic populations are suggested to characterize the leukaemic state. PMID- 3857124 TI - Intracranial neoplasms in children in Ibadan, Nigeria. AB - Analysis of 89 intracranial tumors in children presenting at the University College Hospital, Ibadan, Nigeria, between 1960 and 1982 is reported. These tumors are commonest in the first decade of life and occur more in males than in females. Fifty-three per cent of the primary brain tumors are supratentorial. The commonest sites are cerebellum, cerebrum, and the pons. The common histological types are astrocytomas, medulloblastomas, ependymomas, and oligodendrogliomas. Craniopharyngiomas are among the most frequent supratentorial neoplasms in Ibadan children and the central nervous system involvement in cases of Burkitt's lymphoma is a frequent complication. PMID- 3857126 TI - HL-60 human leukaemic cell line colonies in agar capillaries: comparison of their reactivity to hormones, cytostatics and selective inhibitors of proliferation. AB - Colonies of the HL-60 human leukaemic promyelocytic cell line developing in semisolid agar gel capillaries were established. The endogenous inhibitory fraction GI-3, specific for myeloid cells, hydrocortisone and adriamycin decreased colony number in a dose dependent manner. ED50 values amounted to 220, 10(-1) and 4.5 X 10(-3), micrograms/ml respectively. If administered in combination, the endogenous inhibitor, steroid hormone and cytostatic agent exhibited a marked synergism. They affected HL-60 cells additively, and in some cases, a slight potentiation occurred. The experiments demonstrate the possibility of augmenting the inhibitory activity of cytostatics and hormones on leukaemic cells by endogenous inhibitors without an increase in drug toxicity. PMID- 3857127 TI - [Biotechnology in pharmacy. I. General]. PMID- 3857128 TI - Placental alkaline phosphatase and cancer antigen 125 in sera of patients with benign and malignant diseases. AB - Human placental alkaline phosphatase (hPLAP; EC 3.1.3.1), cancer antigen 125 (CA 125), and carcinoembryonic antigen (CEA) were determined in sera of patients with malignant and nonmalignant disorders. For CA 125 we used two different commercial assay systems, based on the same monoclonal antibody. hPLAP had the same sensitivity (20%) as CA 125 for detecting non-ovarian neoplasia, whereas that of CEA was 45%. For detecting ovarian cancer CA 125 (Cis kit) was slightly more sensitive (50%) than hPLAP (45%), much more than CEA (10%). hPLAP was increased in sera of 2% of patients with nonmalignant disorders, CA 125 in 23%, and CEA in 18%. hPLAP was increased in only one of 10 diabetic patients and two of 50 patients on chronic renal dialysis. CA 125 and CEA were respectively increased in 45% and 23% of all liver pathologies studied and in 12% and 17% of patients with renal insufficiency. The sensitivity of hPLAP for detecting ovarian cancer is slightly inferior to that of CA 125, but its specificity is much higher. We found the Abbott system for CA 125 to be more sensitive than the Cis system. PMID- 3857129 TI - HLA compatibility and human reproduction. AB - Studies carried out on inbred strains of mice have shown that conceptuses which differ at the MHC antigens from their mothers appear to enjoy a selective advantage when compared with conceptuses which are more compatible. In humans a highly significant degree of MHC compatibility can be found in couples with a history of repetitive spontaneous abortions with unknown aetiology. We HLA - typed 28 selected couples with a history of three or more consecutive spontaneous abortions of unknown aetiology and 28 normal couples as control. We found that 22/23 (79%) aborter couples shared common HLA antigens, while normally fertile couples only 7/28 (25%) (p less than 0.001). The finding of a significant HLA compatibility in couples having abortions might be consistent with the hypothesis that blocking antibodies, formed in early pregnancy as response to HLA antigens, are perhaps necessary for a successful gestation. The factor causing abortion in couples sharing HLA antigens might also refer to the homozygosity for fetal genes in linkage with HLA alleles. The sharing of HLA alleles could be a marker for other genes of the same region which are lethal for the embryo in the homozygous state. PMID- 3857130 TI - Norrie's disease: close linkage with genetic markers from the proximal short arm of the X chromosome. PMID- 3857131 TI - A preliminary report on the role of some immunologic factors in persistence of chronic tinea pedis. PMID- 3857132 TI - Adherence of a non-oral hydrophobic bacterium to the human tooth surface. PMID- 3857133 TI - Standardization of endodontic instruments and materials: expectations and reality. Part II. Reality. PMID- 3857134 TI - Crown lengthening procedures: an overview. PMID- 3857135 TI - Root canal filling with a slowly resorbable iodoform paste in the apical part: report of a long term follow up. PMID- 3857136 TI - Pharmacokinetics of intravenous ceftizoxime in patients on continuous ambulatory peritoneal dialysis. AB - The pharmacokinetics of ceftizoxime (CZM) were determined in 16 non-infected CAPD patients. Patients received either 500 mg or 1000 mg CZM by i.v. bolus. The dialysate exchange volume was 2 l. Serum CZM concentrations at 10 min were 69.7 +/- 19.7 micrograms/ml (1000 mg dose) and 39.2 +/- 8.4 micrograms/ml (500 mg dose), and declined to 33.7 +/- 13.9 micrograms/ml and 16.9 +/- 3.2 micrograms/ml respectively at 360 min. Dialysate CZM levels at 10 and 360 min were 1.8 +/- 1.3 and 19.9 +/- 6.6 micrograms/ml respectively (1000 mg dose) and 1.4 +/- 0.9 and 12.6 +/- 3.5 micrograms/ml (500 mg dose). The half-time of CZM was 14.1 +/- 4.6 h. Peritoneal clearance of CZM was low and equilibrium was not achieved in 6 h. However peritoneal CZM concentrations were adequate within 1 h for the treatment of most organisms which cause CAPD-related peritonitis. PMID- 3857137 TI - Direct extension of retropharyngeal abscess demonstrated by gallium scan. PMID- 3857138 TI - The perisplenic halo of Ga-67 citrate. A sign of perisplenic abscess. AB - Two cases are presented which display a scintigraphic picture of increased Ga-67 activity around the spleen with a relative photon deficient center. We call this pattern the perisplenic halo of Ga-67, which represents a perisplenic abscess. The anatomy of the perisplenic compartment and the possible pitfalls in diagnosing the perisplenic halo are discussed within the paper. PMID- 3857139 TI - Ga-67 studies in a patient with acquired immunodeficiency syndrome and disseminated mycobacterial infection. AB - A well-documented case of acquired immunodeficiency syndrome (AIDS) with diffuse lymphadenopathy and disseminated mycobacteriosis in whom serial Ga-67 studies were performed is presented. PMID- 3857140 TI - Nonvisualization of an enlarged spleen on Ga-67 scintigraphy but demonstrated by CT after splenic irradiation. AB - Presence of enlarged spleen using CT with absence of splenic visualization in Ga 67 citrate images in a patient with chronic myelogenous leukemia and splenomegaly after splenic irradiation was observed. Since Howell-Jolly bodies had not been identified in the peripheral circulation, the finding of splenic nonvisualization was explained by disassociated splenic functions, which are not tightly coupled, and some activities that can be suppressed by irradiation without impairing others. The Ga-67 splenic localization mechanism is probably more sensitive and liable to disruption by irradiation, and was independent of spleen size. Ga-67 scintigraphy and Tc-99m sulfur colloid liver-spleen scintigraphy are two organ function-dependent imaging procedures, while CT provides anatomic information. PMID- 3857142 TI - IgG heavy chain (Gm) allotypes in ankylosing spondylitis. AB - A comparison between 70 patients with ankylosing spondylitis and 97 controls revealed no significant differences in Gm allotypes. In the patients, no association was found between Gm types and various clinical features. PMID- 3857141 TI - Clostridium difficile isolation in leukemic children on maintenance cancer chemotherapy. A preliminary study. AB - Between December 1982 and November 1983, stool specimens from 15 children with acute lymphoblastic leukemia, who were on maintenance cancer chemotherapy, were examined weekly for the presence of Clostridium difficile and its toxin. Four out of 15 patients were positive for C. difficile: three patients had stool specimens that did not contain toxin, but cultures yielded growth of toxigenic C. difficile on only one occasion. The fourth patient, who had a recent history of hospitalization, particularly aggressive cancer chemotherapy, neutropenia, and antibiotic therapy, excreted both C. difficile and its toxin for at least 1 month. All children were asymptomatic at the time of positive cultures. This preliminary study reveals a low rate of C. difficile colonization in leukemic children on maintenance cancer chemotherapy. PMID- 3857143 TI - Longitudinal study of dental caries in individuals in Jonkoping, Sweden, aged 15 years in 1973 and 20 years in 1978. AB - The aim of this investigation was to study caries development between the ages of 15 and 20 yr in the same individuals. Data concerning 100 adolescents constituted the basic material. Eighty subjects could be re-examined 5 yr after the first examination. The mean number of teeth per subject was 27.1 both in 1973 and in 1978. Four subjects (4%) in 1973 and three subjects (2.4%) in 1978 showed no decayed and/or filled proximal tooth surfaces. The prevalence of intact tooth regions was higher in the mandible than in the maxilla. Only one of the 73 subjects who were free from caries in the mandibular incisor/canine region at the basic examination developed new carious lesions in this region during the next 5 yr period. Analysis of the frequency distribution of the different caries diagnostic groups revealed that 32 subjects (40%) showed no change during the 5 yr period while 47 (58.7%) now belonged to a higher caries prevalence group. 3538 (80.7%) proximal surfaces were diagnosed as intact at the basic examination. The number of intact surfaces 5 yr later was 3107 (70.9%). In individuals with low and high numbers of decayed and/or filled surfaces, respectively, there was a tendency towards a more pronounced individual caries progression in the group that showed the highest caries prevalence at the basic examination than in the group showing a low caries prevalence. PMID- 3857144 TI - Physiological indicators of fluoride exposure and utilization: an epidemiological study. AB - Individual samples of urine, fingernails, head-hair, saliva, plaque and enamel were collected from three groups of Hungarian children, aged 14 years, who were exposed to contrasting water fluoride levels (less than or equal to 0.11 ppm; 0.5 1.1 ppm; 1.6-3.1 ppm). The mean fluoride concentration of the samples increased consistently and significantly, but mostly non-proportionately, with increasing water fluoride level. With the exception of plaque, the materials examined are considered suitable indicators of exposure to or systemic utilization of fluoride for population groups. Caries experience decreased with increasing fluoride exposure. Dental fluorosis constituted no clinical or aesthetic problem. PMID- 3857146 TI - Prevalence vs. incidence of the mandibular pain dysfunction syndrome: implications for epidemiological research. AB - Conclusions about the aetiology and maintenance of the Mandibular Pain Dysfunction Syndrome (MPDS) are largely based on clinic populations, but there are indications that sufferers who seek help about their symptoms are not typical of the general population of sufferers. This raises important problems in extrapolating findings from the patient population to the general one. This paper argues that future epidemiological studies should take the various influences on the decision to seek advice into account so that conclusions about MPDS can be reached. Specific additions to research designs are noted. PMID- 3857145 TI - Prevalence and severity of periodontitis in a high fluoride area in South Africa. AB - The prevalence of periodontal disease is widespread throughout the world. Its severity varies considerably and the factors responsible for this variation are not known. Although the effect of fluoride on the reduction of dental caries is well established, its effect on chronic inflammatory periodontal disease is obscure. In this investigation, the prevalence and severity of periodontitis in 71 adults residing in a high fluoride area (2-3 ppm) was studied. In spite of large amounts of plaque and the prevalence of severe gingivitis in these individuals, there was little evidence of periodontal destruction (mean probing depth = 2.5 mm; mean loss of attachment = 1.02 mm). The possible reasons for the resistance of this population to = 1.02 mm). The possible reasons for the resistance of this population to periodontitis are discussed. PMID- 3857147 TI - Evaluation of social inequality of use of dental services in Norway. AB - It is tempting to assume that the increase in use-rates in Norway throughout the 1970's reflects a decrease in social inequality concerning use of dental services. In order to assess whether or not equalization has been achieved from 1973 to 1983, the application of a conservative and a radical standard led to different conclusions about equalization. Therefore, a formal model containing explicit assumptions was constructed and used to test the null hypothesis of no significant change in social inequality concerning regular use of dental services as well as no significant change in use-rates from 1973 to 1983. The model corrects for the ceiling effect as the proportion of regular dental visitors from a social status group increases, by assuming that the dental visiting potential is normally distributed within each social status group. The empirical basis was formed by nationwide interview surveys in 1973 (n = 1630) and in 1983 (n = 1410). Level of income was selected as indicator of social status and grouped into seven categories. Regular visitor rates for each income group were transformed to standard normal deviates (z-scores) and regressed upon level of income separately for 1973 and 1983. There was a net improvement of proportions of regular dental visitors from 1973 to 1983 as measured by a significant decrease of the intercept, but no equalization between social status groups as measured by no significant change of the slope. PMID- 3857148 TI - Results of the Sherbrooke-Lac Megantic fluoride varnish study after 20 months. AB - The purpose of this study was to demonstrate the effectiveness of two fluoride varnishes (Duraphat and Fluor Protector) in the prevention of dental caries in children residing in a non-fluoridated community. At baseline, 787 grade one children (6-7-yr old) were examined and randomly allocated into a control and two treatment groups. At 20 months, 703 children remained in the study. The mean baseline caries experience and the mean number of permanent teeth present at 20 months were not significantly different among the treatment and control groups. The mean DMFS increments after 20 months were 1.70, 1.73 and 2.02 for Fluor Protector, Duraphat and control groups respectively (% reductions of 15.8 and 14.4 for Fluor-Protector and Duraphat groups). The mean dfs increments for primary molars after 20 months were 1.56, 1.62 and 1.74 for Fluor-Protector, Duraphat and control groups respectively (% reductions of 10 for Fluor-Protector and 7 for Duraphat). PMID- 3857150 TI - Demand for dental care in Sri Lanka. AB - The demand for dental care was assessed among 3000 dental patients visiting an out-patient clinic in Sri Lanka. 46% of the patients sought treatment for complaints related to advanced stages of dental caries whilst 18% requested treatment for early stages of decay. 20% had complaints related to periodontal disease of which two-thirds had advanced symptoms of mobility. The majority of the demands reflect a need for emergency care such as exodontia and dressings for cavities, which is currently being carried out by dentists but could easily be done by auxiliaries at low cost. PMID- 3857149 TI - Relationship between enamel fluoride concentration and dental caries in a selected population. AB - The relationship between dental caries experience (DMFT) and enamel fluoride concentration (EnF) was determined in 100 freshman dental students aged between 20 and 26 yr. DMFT was determined by clinical examination and supplemented by bitewing radiographs. Biopsies were performed on the maxillary right canine of each student by etching with 1 M perchloric acid for 5 s. A regression analysis of DMFT and EnF and of square root DMFT and 1nEnF indicated that the correlation coefficients were not significant. Students exposed to fluoridated drinking water had significantly lower DMFT and significantly greater EnF than the students reared in areas with non-fluoridated drinking water. PMID- 3857151 TI - Usefulness of two psychometric scales in Swedish patients with severe dental fear. AB - Dental fears and other fears were assessed in 67 patients with dental fear with the Corah Dental Anxiety Scale (CDAS), the Geer Fear Scale (GFS), and a behavioral dentist's rating scale (DR). Patients were selected because of extreme initial dental fear (n = 20), favorable response to treatment for dental fear (n = 23). CDAS change paralleled behavioral change (DR), supporting the usefulness of CDAS in assessing dental fear. GFS scores did not change in either group but were higher among patients who did not respond to treatment for dental fear; these findings are discussed in terms of treatment outcome prediction and treatment specificity. PMID- 3857152 TI - Dental anxiety and DMFS status: association within a US naval population versus differences between groups. AB - Measurement of dental treatment anxiety and oral health, in a sample of naval recruits, confirmed the generally held expectation that a high anxiety group would have significantly greater numbers of diseased surfaces (DS) than a low anxiety group. However, it was also shown that dental anxiety was not a predictor of DS within the ungrouped sample. In evaluating the public health impact of dental treatment anxiety on oral health, attention must be paid to the context of data collection and analysis. Evidence bearing on group differences does not necessarily describe the situation within a population. PMID- 3857153 TI - Tricks and traps in dental clinical trials. PMID- 3857154 TI - Model for the study of the preeruptive effect of NaF tablets on caries in permanent teeth. AB - The purpose of this study was to elaborate a model for estimating the caries reducing effect of a preventive measure with due consideration of background factors. The material comprised 50 children, who had consumed NaF tablets regularly during preschool age, and 76 comparable children who had never consumed NaF tablets. They were all examined at 12 and 13 yr of age. Information on caries and, as confounding factors, dietary habits, oral hygiene and microbiologic variables, was obtained on both occasions. Correlations between the parameters and caries, their discriminating effects and interaction between them were studied. The results showed that correction for confounding diminished the crude caries-reducing effect of NaF tablets. Streptococcus mutans and lactobacilli turned out to be the strongest confounders to discriminate well as single variables and to behave logically in analyses of interaction. Therefore, these factors are recommended in the first place for inclusion in a correction model. If the material is sufficiently large for a further breakdown, oral hygiene (represented by bleeding on probing) could be added. The model will be used in future studies of the preeruptive effect of NaF tablets on caries in permanent teeth in the same population. PMID- 3857155 TI - Prevalence of dental decay in Jewish and Arab schoolchildren in the Jerusalem area. AB - The purpose of this survey was to gather up-to-date information on the prevalence of dental decay in schoolchildren in the Jerusalem area. Close to 650 Arab and Jewish schoolchildren aged 6-8 yr underwent oral examinations. The relationship between caries prevalence and treatment supplied with some secondary factors was studied. The results show that 92% of the children were affected by decay. Compared to former years there is an increase in the prevalence of dental caries throughout the population. No significant differences were found when sex, ethnic population or socioeconomic factors were related to caries prevalence. However, when DMF is broken down into its components, Arab children were seen to have a greater number of teeth affected by caries and in need of treatment (D). In contrast, treatment need has been met to a much greater degree among Jewish children than among Arab children. Data and explanations are offered. PMID- 3857156 TI - Cranial CT scans in eating disorder patients and controls. PMID- 3857157 TI - [Long-term survival in acute leukemia: report of 23 cases]. PMID- 3857158 TI - Aminoglycoside treatment and renal prostaglandin excretion in premature infants. AB - During prospective studies of indomethacin treatment of symptomatic patent ductus arteriosus, the question arose whether aminoglycosides alter renal prostaglandin metabolism. Adopting the matched-pair method, we retrospectively analyzed creatinine clearances, urine output and renal PGE2 and PGF2 alpha excretion in preterm infants with and without aminoglycosides. No consistent differences of any of these parameters within the matched pairs could be demonstrated. Indomethacin induced comparable reductions of creatinine clearances in patients with and without aminoglycoside pretreatment. Discrepancies with animal studies and clinical implications of these results are discussed. PMID- 3857159 TI - [Importance of the tumor-associated antigen CA 19-9 in the differential diagnosis of pancreatic diseases]. AB - Tumour-associated antigen CA 19-9 was determined in serum from 166 patients (30 without gastro-intestinal disease, 32 with liver cirrhosis, 9 with choledocholithiasis, 65 with acute or chronic pancreatitis and 30 with malignant tumors in the region of pancreas and bile passages). The specificity of CA-19-9 as tumour marker was 97% in patients without gastro-intestinal disease, but in those with liver cirrhosis or choledocholithiasis it was only 56% and 44%, respectively. In particular, cholestasis reduced specificity. Acute pancreatitis in its initial attack gave false-positive CA 19-9 values in 27% of cases, repeated bouts in chronic recurrent pancreatitis in as many as 50%. In chronic pancreatitis the specificity was 90%. Malignant tumours of pancreas and bile ducts were diagnosed with a sensitivity of 80%. Determination of CA 19-9 in pure pancreatic secretion failed to differentiate between the control group (30), chronic pancreatitis (21) and carcinoma of the pancreas (22). PMID- 3857160 TI - [Improving prognosis in childhood leukemia]. PMID- 3857161 TI - [Comparison of computerized tomography, clinical functional diagnosis, and instrumental occlusal analysis]. PMID- 3857162 TI - [A discussion on the orthodontic movement of implants and implant failures in the anterior teeth due to orofacial dyskinesia]. PMID- 3857163 TI - [Periotest methods--development and clinical trial]. PMID- 3857164 TI - [Correlation between clinical findings and morphologic composition of the subgingival plaque in 2 different periodontal diseases]. PMID- 3857165 TI - [Miniplate osteosynthesis in subapical osteotomy of the mandible]. PMID- 3857166 TI - [Problems in the orthodontic-prosthetic treatment of patients with hypodontia]. PMID- 3857167 TI - [Drug interactions]. PMID- 3857168 TI - [Studies on the surface quality of dental veneering resins]. PMID- 3857169 TI - [Effect of potassium thiocyanate on corrosion behavior of non-precious metal dental alloys]. PMID- 3857170 TI - [Reproducibility of model mounting with the Lauritzen technic]. PMID- 3857171 TI - [Reproducibility of the terminal hinge axis position--a 1 year study]. PMID- 3857173 TI - Graduate dental hygiene education today to ensure a true profession. PMID- 3857172 TI - Post-certificate dental hygienists' education and professional development. PMID- 3857174 TI - Enrollment trends in two-year and four-year dental hygiene programs. PMID- 3857175 TI - Student participation in program goal assessment. PMID- 3857176 TI - Systemic infection with Trichosporon capitatum in two patients with acute leukaemia. AB - Trichosporon capitatum was isolated from the blood of two patients with acute leukaemia who were undergoing induction chemotherapy. Both patients died of their infections, and the fungus was cultured from their tissues after death. Systemic infection was proved by demonstrating the same pattern of fluorescein-labelled lectin staining of fungal elements in the tissues as was shown by the fungal isolates. PMID- 3857177 TI - Placenta, embryo, and tumor uptake of 67Ga-citrate and 59Fe-citrate. AB - The uptake of gallium citrate Ga67 and ferrous citrate Fe59 was studied in pregnant rats with or without a 4-dimethylamino-stilben(DS)-induced sarcoma tumor. The liver and placenta of the mother concentrated 67Ga, while the uptake of 67Ga in the embryo was minimal. However, the embryo showed higher concentrations of 59Fe. Preloading with iron did not affect the 67Ga uptake of the placenta, but increased the uptake in the blood and liver of the mother. With regard to 59Fe uptake, iron loading only affected the embryo liver. Tumors and the placenta showed a similar 67Ga uptake but a different incorporation of 59Fe. The probable mechanisms involved are discussed. PMID- 3857178 TI - Annual meeting of the Belgian Society for Cell Biology, German Society for Cell Biology. Bonn, 18-22 March 1985. Polarity--Transport--Skeleton. Abstracts. PMID- 3857179 TI - British Society for Cell Biology, spring meeting. Glasgow, 25-29 March 1985. Abstracts. PMID- 3857180 TI - Optimal schedule for anthracyclines. PMID- 3857181 TI - Phase II study of epirubicin in advanced adenocarcinoma of the pancreas. AB - The EORTC Gastrointestinal Group has conducted a phase II trial in 41 patients with locally advanced or metastatic adenocarcinoma of the pancreas with epirubicin 90 mg/m2 intravenously every 4 weeks, with dose escalation if possible. Seven patients were not evaluable for response. In 34 evaluable patients there were two complete and six partial responses (response rate 24%). Nine patients had stable disease for at least 2 months, including one patient with a minor response. Median time to progression for responders was 7 months, for all patients 3 months. Median survival for responders was 9 months, for all patients 5 months. It is concluded that epirubicin is an active drug in pancreatic cancer. PMID- 3857182 TI - Banding karyotype analysis of murine leukemia L1210 cell lines with special regard to changes associated with a shift from in vivo to in vitro growth. AB - An attempt was made to establish permanent in vitro cultures of L1210 leukemia cells under close chromosome control. The investigations involved three independent adaptations. The karyotype was analyzed by the G-banding method. Chromosome analysis of the in vitro cell populations was carried out as soon as they could be analyzed, i.e. immediately after they obtained stable growth in the culture. By comparing the karyotype of the in vivo parental cell line with that of the derivative sublines in vitro, it was found that only some karyotypic variants present in the heterogeneous original population in vivo were able to produce cell lineages. In some cases rapid overgrowth of the cell populations by newly formed karyotypic variants was observed. In all independently obtained sublines changes in the karyotype involved the same chromosomes, thus suggesting that these changes were non-random for the process of cell line establishment in the system investigated. The observed changes in the number of copies of chromosomes 9 and 15 in the cells from the culture seem to indicate that the ratio of the genes localized in these chromosomes may be important for the growth in perpetuation of the cells. PMID- 3857183 TI - A new myelomonoblastic cell line (M20): analysis of properties, differentiation, and comparison with other established lines of similar origin. AB - A new myelomonoblastic cell line (M20) was established from the peripheral blood of a ten-year-old child with acute myeloblastic leukemia, using an improved method for supporting the initial stages of cell proliferation. The addition of irradiated macrophage monolayers to the proliferating cells appeared to overcome the deterioration of the primary cultures and enable them to continue proliferating until they became independent of this environment. The cell line that developed consisted of myeloblasts and promyelocytes characterized by light and scanning electron microscopy, cytochemistry, and enzymatic activities. The cells expressed Fc receptors and WT1 antigens but did not exhibit HLA-DR, HMA1, Epstein-Barr virus nuclear antigen, and surface Ig. The M20 cells produced colonies when cultured in semisolid medium and secreted lysozyme, prostaglandin E2, and interleukin 1. An attempt was also made to analyse the position of the M20 cells in the scheme of differentiation of the myelomonocytic lineage using different approaches. Treatment of the cells with 12-O-tetradecanoyl phorbol 13 acetate induced their adherence to plastic surfaces and partial maturation to macrophages as judged by morphological criteria, cytochemistry, and enzyme activities. However, comparison of the M20 cells to other well-established myelomonoblastic cell lines did not reveal any pattern suggesting a possible relationship between surface markers, cell function, and differentiation pathway of the various cell lines tested. Establishment of additional cell lines and identification of new markers may assist in defining the mechanisms involved in normal differentiation and malignant transformation of this cell lineage. In addition, such cell lines may also provide a tool for the quantitative recovery of a variety of monokines. PMID- 3857184 TI - Optimal prescription method for cancer chemotherapy. AB - A reexamination of the guidelines for prescriptions for cancer chemotherapy suggests that the use of body surface area (BSA) offers a simplification that may be open to some question. The same drug dose per BSA will give approximately the same toxicity in different age groups and species. This simplification appears to be fortuitous, however, as BSA does not correlate with the dose-limiting target cells, i.e., the hemopoietic stem cell. In patients with an unmodified hemopoietic system, body weight correlates significantly with hemopoietic stem cell concentration. It can be shown that changing the prescription unit from BSA to kilogram (kg) could lead to safer doses in children and neonates. In general, because of low therapeutic index, the expression of cancer chemotherapy drugs per dose-limiting normal tissue target cells could lead to safer and more effective cancer chemotherapy. New assays for prospective in vitro enumeration of dose limiting target cells need to be developed. The indiscriminate use of BSA as a drug dose unit is discouraged. PMID- 3857185 TI - Hematological toxicity: experience with anthracyclines and anthracenes. AB - Documented is hemopoietic toxicity encountered in patients with primary liver cancer (PLC), metastatic breast cancer, and colorectal cancer treated with various anthracyclines (doxorubicin [adriamycin, ADR], 4-'epidoxorubicin [4 'epiADR], and esorubicin) or anthracenes (mitoxantrone and bisantrene, as single agents as well as different combinations). Mitoxantrone, 14 mg/m2 three times weekly, was significantly more toxic than ADR, 60 mg/m2 three times weekly, for patients with PLC (P less than 0.01). In patients with colon cancer the toxicity of esorubicin did not differ significantly from that of 4-'epiADR. There was a tendency toward cumulative leukopenia with mitoxantrone and esorubicin, and cumulative thrombocytopenia with mitoxantrone and ADR. Although nadir counts for cycles 1 and 3 were similar, the percentage of patients receiving the full planned dose by the third cycle differed with the different drugs and in the different disease categories. Doxorubicin can be effectively combined with other cytostatics (e.g., cyclophosphamide + ADR + fluorouracil) to give improved results without undue hemopoietic toxicity in patients with breast cancer. PMID- 3857186 TI - Tricyclic antidepressants antagonize prostaglandin (PG) E2-induced contractions of the guinea pig ileum and hypomotility in the mouse. AB - The interactions of PGE2 and 2 tricyclic antidepressants were tested both on the guinea pig ileum and motility in the mouse. PGE2-induced contractions of the guinea pig ileum were irreversibly blocked by amitriptyline and desipramine. Chronic administration of amitriptyline and desipramine blocked PGE2-induced hypomotility in the mouse. PMID- 3857187 TI - Biosynthesis of androgens and pheromonal steroids in neonatal porcine testicular preparations. AB - The biosynthesis of testosterone and 4-androstene-3,17-dione and some 16 androstenes has been studied in homogenates or subcellular fractions of testes from 3-week-old Landrace piglets. Pregnenolone was converted into 5,16 androstadien-3 beta-ol, 4,16-androstadien-3-one, 5 alpha-androst-16-en-3-one and 5 alpha-androst-16-en-3 alpha- and 3 beta-ols, but the quantities were some 50 times less than those formed in the mature boar testis. Androgens were also formed in the microsomal fractions but the quantities of 4-androstene-3,17-dione (from side-chain cleavage of 17-hydroxyprogesterone) and of testosterone (from reduction of 4-androstene-3,17-dione) were 50-70 times lower than in the adult animal. The kinetic parameters and cofactor preference of the 3 alpha- and 3 beta hydroxysteroid dehydrogenases were determined in the cytosolic, microsomal and mitochondrial fractions of neonatal porcine testes. PMID- 3857188 TI - The relationship between prostaglandins and histamine in the ovulatory process as determined with the in vitro perfused rabbit ovary. AB - The process of follicle rupture has been described as an inflammatory reaction in which prostaglandins (PGs) and/or histamine may be involved. With an in vitro perfused rabbit ovary preparation, experiments were carried out for determination of whether a relationship exists among PGs, histamine, and ovulation. PGF2 alpha alone was capable of inducing ovulation when added to the perfusion fluid at 1, 10, and 100 ng/ ml. Effectiveness in achieving ovulation varied directly with the dosage; however, the ovulatory efficiency of PGF2 alpha-treated ovaries was lower than that of ovaries exposed to human chorionic gonadotropin (hCG, 100 IU). PGF2 alpha-induced ovulation could not be blocked by the H2 receptor antagonist, cimetidine. The PG synthesis inhibitor, indomethacin, did not prevent histamine induced ovulation. Ovulation induced by hCG was partially blocked by the administration of indomethacin; however, the concomitant administration of cimetidine was not associated with further reduction in ovulation. In all but one experimental group, the majority of ovulated ova did not progress beyond the intact germinal vesicle stage unless the ovaries had been exposed to hCG. On the basis of these experiments, PGs and histamine do not appear to be interdependent in their effects on the ovulatory process in vitro. PMID- 3857189 TI - [Prognosis of dental arch insufficiency in the premolar and canine region by the Moyers index]. PMID- 3857190 TI - [Organization of and experience with on-the-job continuing dental education in Godollo]. PMID- 3857191 TI - [Experience with the correction of cleft lip and palate in adults]. PMID- 3857192 TI - [Partial anodontia with congenital absence of the germs of all permanent molars. Case report]. PMID- 3857193 TI - [10-year experience in the surgical management of prognathism]. PMID- 3857194 TI - [Stomatologic implications of multiple sclerosis]. PMID- 3857195 TI - [Molar replantation]. PMID- 3857196 TI - [Loss of adhesiveness in teeth extracted for periodontal disease and caries]. PMID- 3857197 TI - [Treatment of xerostomia with pilocarpine. Based on l5 years' experience and treatment of 500 patients]. PMID- 3857198 TI - [Approximal surfaces of class II amalgam fillings]. PMID- 3857199 TI - One-man practice: computer an asset in office and home. PMID- 3857201 TI - Time in with dental robot: next time he'll say ouch! PMID- 3857200 TI - Rheumatoid arthritis: diagnosis and treatment. PMID- 3857202 TI - Innovative teenager matches tooth patterns. PMID- 3857203 TI - Operation IDENT/nursing home screening project. Broward County, Florida. PMID- 3857204 TI - Management, motivation and morale, part II. PMID- 3857205 TI - What's your practice worth? The TLC approach to practice value. PMID- 3857206 TI - In group practice, supermarket technique works. PMID- 3857207 TI - Ultrastructural changes in testes of the snapping turtle, Chelydra serpentina in relation to plasma testosterone, delta 5-3 beta-hydroxysteroid dehydrogenase, and cholesterol. AB - Ultrastructural changes in the testes of the common snapping turtle, Chelydra serpentina, were observed throughout the year. Plasma testosterone levels were measured and compared with the occurrence of delta 5-3 beta-hydroxysteroid dehydrogenase (3 beta-HSD), cholesterol, and steroidogenic ultrastructural features (smooth endoplasmic reticulum (SER), mitochondria with tubular cristae) in Sertoli and Leydig cells. The testosterone level is highest in May and October (mating) and relatively low during the rest of the year. Fluctuations in 3 beta HSD and cholesterol are consistent with the interpretation that the Leydig cells are potentially active throughout the year. They undergo very little ultrastructural change, (tubular SER to vesiculate and loss of golgi during spermatogenesis and in the winter). Sertoli cells are active only during spermatogenesis from May through October and become inactive until the next cycle; 3 beta-HSD, cholesterol and ultrastructural features change more drastically in the Sertoli cells than in the Leydig cells. These results are discussed with reference to the hypothesis that testosterone of Leydig origin is concerned mainly with mating behavior and that of Sertoli origin with spermatogenesis and maturation of sperm. PMID- 3857208 TI - [Medical genetic research on the Khanty population of the Ovgort rural district of the Yamal-Nenets Autonomous territory]. AB - The results of medico-genetical studies of the Khanty from the Lower Ob river carried out by Tomsk Department of Institute of Medical Genetics of Academy of Medical Sciences of the USSR are presented. The population is characterized by a relatively high index of endogamy (0.54) and a low inbreeding coefficient (0.0011). Diseases of the polygenic mode of inheritance predominate among nosological forms of hereditary pathology. PMID- 3857209 TI - [Results and experiences in kindergarten care]. PMID- 3857210 TI - Treatment of acute lymphoblastic leukemia in adults. AB - Thirty-seven adult patients with acute lymphoblastic leukemia were treated with a protocol called HEAV'D including Adriamycin, Vincristine, L-Asparaginase, Cyclophosphamide and Dexamethasone. The complete remission rate was 70 per cent. The median duration of remission was more than 30 months. Patients with initial leukocyte count below 20 000/mmc experienced a longer remission (median not reached) than patients with a leukocyte count above 20 000/mmc (median 10 months). PMID- 3857211 TI - Modifications in the classification of primary myelodysplastic syndromes: the addition of a scoring system. AB - A retrospective series of patients with the primary myelodysplastic syndrome has been reviewed and the survival updated. A scoring system is proposed that has advantages in predicting survival outcome. The importance of either dysmegakaryocytopoiesis or dysgranulocytopoiesis is emphasized because of its prognostic impact on leukaemic progression. Over 50 per cent of the patients die from either acute leukaemia or consequences of defective marrow production of granulocytes and platelets. Although only a few cases were included, the RAEB-T group has a very poor outcome and appears much closer to FAB M2 in biologic behaviour than RAEB. Both the criteria for the FAB subtypes and the scoring system can be applied easily in each case of myelodysplasia. Of the 56 patients only 9 were still alive as of April, 1984. Eight of these were in the RA-S and RA categories (or using the scoring system grouping 7 were group 1). All of the 16 patients who progressed to overt AML died within 4 weeks, and none was treated with chemotherapy. Of the remaining 31 patients, half died as a result of infection and/or haemorrhage and the remainder from apparently unrelated causes (cardiovascular, carcinoma, renal failure). These latter deaths are not surprising in light of the median age of 72 years. PMID- 3857212 TI - JCAH Board of Commissioners approves changes regarding medical staff bylaws. PMID- 3857213 TI - Regional chromosome mapping of human collagen genes alpha 2(I) and alpha 1(I) (COLIA2 and COLIA1). AB - For the assignment of the genes for the pro-alpha 2(I) (COLIA2) and the pro-alpha 1(I) (COLIA1) collagens, cDNA and genomic DNA probes were used in in situ hybridization experiments on human prometaphase chromosomes. An improved staining method is reported for the simultaneous identification of chromosomes and the autoradiographic grains after the hybridization procedures. With this procedure more cells with higher resolution could be used for the assignment of genes by in situ hybridization. Statistical analysis of the grains located on respectively 660 and 302 metaphases using pro-alpha 2(I) and pro alpha 1(I) DNA probes, confirmed the assignment of these genes to human chromosomes 7 and 17. Analysis of the grain distribution on prometaphase chromosomes showed that the location of the pro-alpha 2(I) collagen gene is in the region 7q21.3-22.1. The location of the pro-alpha 1(I) collagen gene was found to be in band 17q21.31-2205. PMID- 3857214 TI - Forty four probands with an additional "marker" chromosome. AB - Information is presented which has been obtained from an exhaustive examination of 44 probands with a supernumerary marker chromosome (mar) and their families. The data include the derivation of the mar, frequency in various populations, inheritance and possible effect on fertility, congenital abnormality, and mental ability. The practical problems in assessing the risk of abnormality in a foetus discovered during prenatal diagnosis to be carrying a mar, are discussed. PMID- 3857215 TI - Assignment of human ferritin genes to chromosomes 11 and 19q13.3----19qter. AB - Extracts of hamster-human and mouse-human hybrids, some with translocations involving chromosome 19, have been assayed for both human spleen ferritin (rich in L subunits) and human heart ferritin (rich in H subunits). Hybrid lines retaining part of the long arm of chromosome 19 including the region 19q13.3--- 19qter produced human "L" type ferritin. This confirms the previous assignment of the "ferritin gene" to chromosome 19 (Caskey et al. 1983). However, lines retaining chromosome 11 were found to contain human "H" type ferritin suggesting that the gene for the "H" subunit is on this chromosome. The presence of chromosome 6 was not necessary for the expression of either "H" or "L" type human ferritin. It thus seems unlikely that the gene for idiopathic haemochromatosis is a ferritin gene. PMID- 3857216 TI - Haptoglobin and transferrin types in schizophrenia. AB - Haptoglobin and transferrin types were studied in schizophrenic patients and controls. In the haptoglobin system a significant departure from the Hardy Weinberg equilibrium with an excess of heterozygotes was found among the patients (p less than 0.01). The distribution of haptoglobin types in the schizophrenic patients was significantly different from that in the controls. The distribution of transferrin types showed a good agreement with the Hardy-Weinberg equilibrium. There was no significant difference between patients and controls with respect to transferrin types. PMID- 3857217 TI - The use of incompletely linked markers in genetic counseling: accuracy versus linkage. AB - The utility of incompletely linked, selectively neutral, multiallelic markers for tracing the transmission of associated genes is examined theoretically for all genetic counseling situations in which the diagnosis of deleterious progeny is in question. The analysis focuses on the fraction of progeny from each two locus mating which can be diagnosed with minimal accuracy A solely on the basis of the marker alleles transmitted, as a function of A, the recombination fraction between the loci, and the gametic frequency distribution in the population. Together the results allow a quantitative assessment of the diagnostic value of a given marker-target locus association to the total population of at-risk individuals. PMID- 3857218 TI - Effect of short-term & long-term treatment of PGF2 alpha on cholesterol fractions in the ovary, vagina & serum of albino rat. PMID- 3857219 TI - Epirubicin in colorectal cancer. A phase II study of the early clinical trials group (EORTC). AB - Epirubicin, a stereoisomer of doxorubicin with suggested lower potential for cardiotoxicity in experimental animal tumor systems, was studied in a disease oriented phase II trial in patients with advanced colorectal cancer. The drug was given as a direct iv injection of 90 mg/m2 q 3 weeks. No objective response was observed in 52 evaluable patients with colon (n = 34) and rectal (n = 18) carcinoma. Fourteen patients (27%) had stable disease for a median of four treatment courses. Leukopenia (88%), nausea and vomiting (71%) and alopecia (54%) were the most common toxic effects. We conclude that epirubicin at the present dose and schedule is an ineffective agent in patients with metastatic colorectal cancer. PMID- 3857220 TI - Effect of methotrexate on the immune response in children with acute lymphatic leukaemia. AB - Lymphocyte count, lymphocyte subpopulations identified by monoclonal antibodies and mitogen stimulation assays with phytohaemagglutinin, concanavalin A, pokeweed mitogen and staphylococcal protein A, were used to quantitate the effect of methotrexate on the immune response in children with acute lymphatic leukaemia on maintenance therapy. Methotrexate exerted a profound but apparently short-term effect on these parameters as it is prescribed in current maintenance schedules for childhood acute lymphatic leukaemia. A significant drop in lymphocyte count, affecting all subpopulations, was observed 4 h after oral or intramuscular administration of methotrexate which had reverted to pre-methotrexate values one week after the drug was given. Lymphocyte function was markedly affected, with a major decrease in mitogen responsiveness 1 h after methotrexate and a reversion to pre-methotrexate values by 48 h. A selectivity of suppressor T cells to methotrexate is proposed as being responsible for early recovery. Scheduling of methotrexate in current maintenance programmes would therefore appear to allow adequate time for recovery of immunoresponsiveness between doses. PMID- 3857221 TI - Clinicopathologic aspects of acute leukemias in the dog. AB - Nineteen cases of canine acute leukemia were diagnosed during a 4-year period. Two main categories were identified on the basis of cytologic, hematologic, and clinical features: acute lymphoid leukemia and acute myelogenous leukemia. Clinical features included history of weight loss, anorexia, shifting limb lameness, and incoordination. Physical findings were characterized by hepatomegaly, splenomegaly, mild generalized lymphadenopathy, and pallor. Ocular lesions were found in 29% of dogs with acute myelogenous leukemia. Hematologic abnormalities included anemia, thrombocytopenia, pancytopenia, leukemia, and leukoerythroblastic reactions. Results of therapy were discouraging. PMID- 3857222 TI - Effect of prostaglandin F2 alpha, phenylephrine and ergonovine on uterine contractions in the ewe. AB - Two experiments were conducted to determine the effect of prostaglandin F2 alpha (PGF2 alpha), phenylephrine and ergonovine on uterine contractions. In the first experiment, ewes were bilaterally ovariectomized, and a strain gauge force transducer was sutured to the serosa of one uterine horn. Each ewe was treated sc with 2 micrograms of estradiol-17 beta daily to prevent regression of the uterus. Beginning at least 5 d after ovariectomy, four dose levels of PGF2 alpha, phenylephrine and methoxamine were given by im injection and ergonovine was given by im or iv injection. Phenylephrine, methoxamine and ergonovine are alpha adrenoceptor agonists. Uterine activity was recorded by physiograph for 30 min before and 90 min after treatment. Tracing were analyzed for 20-min periods before treatment and 4 to 24 min and 50 to 70 min after treatment. In Exp. 2, transducers were attached to uteri of intact ewes at d 10 to 12 of an estrous cycle. During subsequent estrus, one or two dose levels of PGF2 alpha, phenylephrine and ergonovine were given by im injection and uterine activity recorded. In Exp. 1, PGF2 alpha and phenylephrine increased (P less than .05 or .01) the number of amplitude of contractions at both 4 to 24 and 50 to 70 min. Ergonovine given im increased the number of contractions. In intact estrous ewes, PGF2 alpha increased the number and amplitude of contractions at 4 to 24 min, phenylephrine increased the number and amplitude at both 4 to 24 and 50 to 70 min, and ergonovine increased the number slightly but significantly at 4 to 24 min.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3857223 TI - Identification of molybdoproteins in Clostridium pasteurianum. AB - Cells of Clostridium pasteurianum whose N source is switched from NH3 to N2 accumulate large amounts of molybdenum beginning 1.5 h before the detection of nitrogenase activity. Anaerobic multiphasic gel electrophoresis and anion exchange chromatography were used to identify the molybdoproteins and molybdenum containing components present in N2-fixing cells. In addition to molybdate, six distinct 99Mo-labeled species were detected, i.e., a membrane fragment, the MoFe protein of nitrogenase, formate dehydrogenase, a Mo "binding-storage" protein, a 30-kilodalton molybdoprotein, and a low-molecular-weight molybdenum species. Of these, the MoFe protein, formate dehydrogenase, and the Mo binding-storage protein were present in more than one zone because of complex formation with other proteins, partial denaturation, and variation in the amount of Mo bound to the protein, respectively. In addition to the six proteins, a soluble "free" Mo cofactor in the cytosol was detected by showing that it reconstituted nitrate reductase activity in crude extracts of the Neurospora crassa mutant nit-1. PMID- 3857224 TI - Regulation and order of involvement of molybdoproteins during synthesis of molybdoenzymes in Clostridium pasteurianum. AB - The accumulation of 99Mo (from 99MoO4(2-) into molybdenum-containing species in Clostridium pasteurianum was investigated to identify the molybdoprotein(s) involved in Mo metabolism. Mo accumulation by clostridial cells during the derepression of the nitrogenase system increased substantially beginning 1.5 h before nitrogenase activity was detected. The increase in Mo accumulation by the cells is a result of the incorporation of Mo into a high-molecular-weight molybdenum species (suspected membrane fragments), a low-molecular-weight molybdenum species, a Mo binding-storage protein, a 30-kilodalton molybdoprotein, and formate dehydrogenase. Mo incorporation into the MoFe protein was detected 1 h after the onset of metal uptake. Kinetics of Mo accumulation into the molybdoproteins during the derepression of nitrogenase suggests that Mo incorporation or uptake or both occur in the following sequence: (i) membranes and MoO4(2-), (ii) a low-molecular-weight molybdenum species, (iii) Mo binding storage protein and a 30-kilodalton molybdoprotein, (iv) formate dehydrogenase, and (v) the MoFe protein. The intracellular level of all molybdenum components except the MoFe protein appears to be influenced by the availability of Mo. Clostridial cells grown in the presence of a limiting amount of Mo became Mo deficient as a result of growth and a MoO4(2-) supplement added to such cells rapidly accumulated within the cells to levels five times that found in steady state nitrogen-fixing cells. The Mo accumulated by the Mo-deficient cells was rapidly incorporated into preformed demolybdoproteins in the absence of de novo protein synthesis. The increase in Mo accumulation by Mo-deficient cells was a result of an increase in all molybdoproteins except the MoFe protein. PMID- 3857225 TI - Effects of pulp removal and organ culture on adult rat incisor odontoblasts. AB - The morphological integrity of adult rat incisor odontoblasts was studied to determine the effects of pulp removal and subsequent incubation. From each pair of maxillary incisors one was left intact while the pulp from the other one was removed. Both series were incubated in BGJb medium according to the Trowell method. Morphometrical measurements of the thickness of the odontoblast layer and the size and shape of the odontoblast nuclei were performed on photomicrographs of transverse sections of the incisors. After pulp removal the odontoblasts seemed disorganized and their nuclei were darker and more rounded. During incubation the odontoblasts did not recover from the effect of this pulp removal and degenerative changes were frequently seen. In the culture of the complete tooth organ the morphological integrity of the odontoblasts was much better preserved. Therefore the organ culture of intact teeth seems more favourable. PMID- 3857226 TI - [Ultrastructure of hyperpigmented gingiva due to metallic deposits from dental restorations]. AB - An ultrastructural study of hyperpigmented gingival fragments due to metallic deposits, originating from fixed or amalgam restorations, has shown the presence of metallic particles in the lamina propria either in extracellular locations between collagen fibrils, in basal lamina of gingival keratinocytes, endothelial cells and Schwann cells, or in intracellular locations in macrophages, fibroblasts or endothelial cells. PMID- 3857227 TI - [Prostaglandin synthesis by dispersed cells from the submandibular gland of the rat. Effect of pH and calcium]. AB - Qualitative study by HPLC of PGs synthesis by rat sub-maxillary glands cells shows that PGE2 and PGF2 alpha are synthetized predominantly. PGF2 alpha synthesis is essentially related to extracellular ionic concentration of H+ and Ca++ suggesting that the activation of phospholipase A2 or C is more important than the concentration of other enzymes such as 9 intracytoplasmic ceto reductase. Modulation of PGs synthesis by sub-maxillary gland cells by extra cellular factors suggests a possible interaction between hormones (angiotensine II, catecholamines) and phospholipase A2 or C of the cell membrane of these cells. PMID- 3857228 TI - Cohesive and adhesive fracture patterns of the composite-enamel bond. AB - A method was developed to adhere composite to a small (1 mm2) surface of human enamel. The geometrical configuration resulted in a complex stress distribution in the vicinity of the composite-enamel bond during fracture in a tension test. The fracture surfaces were examined by scanning electron microscopy. The observed fracture areas at the enamel showed cohesive (composite-composite) as well as adhesive (composite-enamel) parts. The adhesive part of the fracture surface was surrounded by a composite wall. The typical fracture pattern can be explained by the complex stress situation and the deviant structure of the composite near the edge. PMID- 3857229 TI - Phosphorylation of high mobility group protein 14 by casein kinase II. AB - Phosphorylation of chromosomal high mobility group (HMG) protein 14 by casein kinase II has been characterized. Two mol of 32P are incorporated per mol of bovine HMG 14. Kinetic analysis provided evidence for two distinct sites with apparent Km values of 14.5 and 134 microM and respective Vmax values of 0.17 and 0.68 mumol/min/mg casein kinase II. Tryptic peptide mapping identified two phosphorylated products, each with phosphoserine. Amino acid composition and sequence analysis demonstrate that the major high affinity phosphorylation site for casein kinase II is serine 89. This sequence located at the carboxyl-terminal of HMG 14 contains the primary sequence determinants for casein kinase II. On the basis of reverse-phase high performance liquid chromatography and amino acid analysis, HMG 14, serine 99 represents the low affinity phosphorylation site. PMID- 3857230 TI - The role of Ca2+ in dimethyl sulfoxide-induced differentiation of Friend erythroleukemia cells. AB - Cultured Friend cells can be induced by dimethyl sulfoxide (Me2SO) and several other agents to mature along the erythroid pathway. Evidence has been presented that an increase in Ca2+ influx is an early and necessary prelude to the commitment to maturation by these cells (Levenson, R., Housman, D., and Cantley, L. (1980) Proc. Natl. Acad. Sci. U.S.A. 77, 5948-5952). The simplest hypothesis supporting all the available data is that Me2SO and other inducers elevate the cytosolic Ca2+ concentration. We have now measured cytosolic Ca2+ using the fluorescent indicator quin-2, and find, contrary to expectation, a small decrease upon treatment of cells with Me2SO. Cytosolic Ca2+ was increased by raising the Ca2+ in the medium, but was not dramatically altered by addition of ouabain or monensin or by incubation in Na+-free medium. Measurement of total cell Ca2+ by a triple-labeling technique using 3H2O and 125I-albumin to determine cell water and extracellular space, respectively, revealed no significant change upon treatment with Me2SO for up to 40 h. A decrease in the initial rate of 45Ca2+ influx was observed in Me2SO-treated cells, when measured at 4 degrees C. These data do not support the hypothesis that an increase in cell Ca2+ is necessary for the induction of Friend cell differentiation or that Na+/Ca2+ exchange is a significant regulator of cytosolic Ca2+ in Friend cells. PMID- 3857231 TI - Immunochemistry of I/i-active oligo- and polyglycosylceramides from rabbit erythrocyte membranes. Characterization of linear, di-, and triantennary neolactoglycosphingolipids. AB - A triantennary ceramide pentadecasaccharide (BIrab-2) with blood group I and B like activity and an unbranched ceramide heptasaccharide (Birab) with i- and B like activity were isolated in high yield from rabbit erythrocyte membranes. The structures of the native substances and the products obtained after treatment with alpha-galactosidase (BIrab-2 alpha, Birab alpha) and subsequent Smith degradation (BIrab-2 alpha SD) were determined by sugar analysis, methylation analysis, and fast atom bombardment-mass spectrometry of the permethylated derivatives. Together with the results of 1H NMR analysis (Dabrowski, U., Hanfland, P., Egge, H., Kuhn, S., and Dabrowski, J. (1984) J. Biol. Chem. 259, 7649-7651), the following structures were established for the native substances: (formula; see text) and Gal alpha 1----3Gal beta 1----4GlcNAc beta 1----3Gal beta 1----4GlcNAc beta 1----3Gal beta 1----4Glc beta 1----1Cer. Both compounds exhibit strong blood group B-like activity. BIrab-2 alpha is a strong receptor for human anti-I cold agglutinin and Birab for anti-i cold agglutinin. PMID- 3857232 TI - Academic achievement and intelligence test performance in children with cancer at diagnosis and one year later. AB - Recent investigations have found significant test-retest decline in certain academic achievement and intelligence test scores in children diagnosed as having acute lymphocytic leukemia (ALL) before 8 years of age. No such effect was observed in children diagnosed at or later than age 8 years. The current study, using a sample of 77 children with ALL, failed to support these findings. No significant differences were found between groups at test or retest nor were significant declines seen for either group from test to retest 1 year later. Reasons for differences in findings between studies, including methodological and samples size differences, are discussed along with implications for future research in this area. PMID- 3857234 TI - Oral isotretinoin therapy for familial Muir-Torre syndrome. AB - Two representative cases of familial Muir-Torre syndrome are presented. Multiple benign sebaceous neoplasms in both cases and a solitary keratoacanthoma in one were successfully treated with oral isotretinoin. Low-dose maintenance therapy has stabilized the cutaneous manifestations in the two patients, and no new epithelial neoplasms have appeared. This report emphasizes (1) the rationale for the use of isotretinoin in the Muir-Torre syndrome and (2) the potential for a familial pattern of inheritance and a possible association with the cancer family syndrome. It speculates on the prevention of future internal malignancies in Muir Torre syndrome patients by maintenance oral isotretinoin treatment. PMID- 3857233 TI - Clostridium difficile in haematological malignancy. AB - Twenty patients with haematological malignancies who developed Clostridium difficile bowel infection or colonisation are described. All isolates of C difficile were toxigenic in vitro and faecal cytotoxin (toxin B) was detected in 20/26 episodes. Ten of 20 episodes with detectable faecal cytotoxin were associated with typical antibiotic associated diarrhoea. In the other 10 episodes (nine patients), there was a severe unusual illness which was associated with detection of C difficile. The unusual features of the illness were pronounced jaundice (total bilirubin greater than or equal to 44 mumol/l), abdominal pain and distension, and initial constipation followed either by diarrhoea or by large bowel stasis. Four of these patients died within seven days. Bacteraemia was often a presenting feature in neutropenic patients subsequently shown to have C difficile. This was not the case in non-neutropenic patients. Bacteraemia was commonly polymicrobial and in two cases C difficile was isolated from blood culture. The clinical implications of recognition of this atypical C difficile associated syndrome are discussed. PMID- 3857235 TI - Strenuous exercise and elevated creatine phosphokinase in patients taking isotretinoin. PMID- 3857236 TI - Elevated CPK and isotretinoin. PMID- 3857237 TI - A cutaneous sign of bulimia. PMID- 3857239 TI - Deep bacterial penetration of early proximal caries lesions in young human premolars. AB - The aim of the study was to assess the frequency and extent of bacterial invasion in proximal small caries lesions of young human premolars. The teeth were fractured longitudinally through the lesion and examined under a scanning electron microscope. In two out of twelve teeth with incipient caries and without any cavitation, bacteria could be seen in both enamel and dentin; in one, penetrating the dentin to a depth of 1.5 mm from the dentinoenamel junction. In both lesions the chaulkiness extended to about half of the enamel thickness. PMID- 3857238 TI - Attempts surgically to induce chorionic fusion between embryos. AB - Intercornual fistulas were made in the uteri of 19 ewes in an attempt to induce chorionic fusion between fetuses. Ewes were 28 to 40 days pregnant with at least one fetus per horn. Sections were removed from the dorsomedial wall of each uterine horn, and left and right horns were sutured together around the openings to produce the fistulas. In some cases a doughnut-shaped sheet of silastic was inserted between the horns, and in most cases the chorioallantoic membranes of the respective fetuses were sutured to one another prior to suturing the uterine walls. In the 16 animals in which intercornual fistulas were constructed in the area of the intercornual ligament, no chorionic anastomosis was induced. In one of the three animals in which fistulas were produced distal to that ligament, the fistula remained patent 25 days post-surgery, and membranes of two female fetuses were joined, through the opening, by a narrow strand of chorionic tissue. We concluded that this technique was not a promising one for induction of choriovascular anastomosis. PMID- 3857240 TI - Cyclic neutropenia: a literature review and report of case. PMID- 3857241 TI - Acquired unilateral condylar hyperplasia and facial asymmetry: report of case. AB - A clinical report is presented of a 12-year-old female with right mandibular hyperplasia, facial asymmetry, bitemporal headaches and left temporomandibular joint pain. Past medical history was noncontributory with the exception of a bicycle accident at age eight, which resulted in minor facial trauma. The management and treatment of this case illustrates the importance of long-term follow-up by the pedodontist and the necessity of a team approach involving pedodontics, orthodontics and oral surgery. PMID- 3857242 TI - Hyperdontia in children below four years of age: a radiographic study. AB - Sixty-six children (forty-one boys and twenty-five girls) were evaluated for differences in characteristics of premaxillary hyperdontia between the primary and permanent dentitions. The study population had forty-five supernumerary teeth in their primary dentitions and fifty supernumerary teeth in their permanent dentitions. Eighty percent of the primary supernumerary teeth were located in the lateral incisor regions, in proper alignment within the dental arch. Sixty-two percent of the supernumerary teeth in the permanent dentitions were situated in the central incisor regions; 90 percent were outside the dental arch, mostly palatal; and 42 percent were inverted. Seventy-three percent of the supernumerary teeth in the primary dentitions had erupted. Twin tooth formation occurred in twenty-eight patients, the majority in the primary dentition; but in eleven children, both dentitions were involved. Interference with the normal dentition occurred most often in the permanent dentition. Children with primary supernumeraries exhibit a greater chance of hyperdontia in the permanent dentition than do others. PMID- 3857243 TI - Hereditary agenesis of ten maxillary posterior teeth: a family history. AB - A family is described, where the mother and her two sons had similar bilateral congenital absences of the following maxillary teeth: the second premolars, the first, second and possibly the third molars, as well as, in the sons, the second primary molars. The size, shape and formation of the remaining teeth were within normal limits. The near relatives of the parents had no history of hypodontia. The family members were otherwise healthy except that the mother and one of the sons had a slight nasality of speech. Moreover, the mother and both sons had adhesive otitis. PMID- 3857244 TI - Dentinal dysplasia type I: report of case. PMID- 3857245 TI - Food allergy and food intolerance. AB - Adverse reactions to foods and food additives include those that involve an immune mechanism of reaction (food allergies) and those that are non immunological in nature (food intolerance). The signs and symptoms of food allergy usually involve the skin and gastrointestinal tract and are "classic" allergic symptoms. Food intolerance occurs more frequently at all ages. A number of food additives have been implicated in food intolerance, as none involve an immune mechanism of reaction. The role of food additives in food intolerance is not well established in many cases, has been discounted in others and continues to be the subject of current research. Although the history of events concerning an adverse reaction is important and gives clues to the specific type of problem (food allergy versus food intolerance), confirmation of the reaction is sometimes desirable. This can be done either by use of a standard elimination diet of non allergic foods, followed by open challenge or by DBFC for more difficult situations. Food allergy skin testing and other in vitro immunologic tests may be helpful as supplemental information in those cases where food allergy is suspected. The best treatment for an adverse reaction to food is avoidance. Unproven and unapproved diagnostic (e.g., leukocytotoxic test) and therapeutic techniques (e.g., sublinqual neutralization) are not recommended in food allergy management. PMID- 3857246 TI - Vitamin use and abuse. PMID- 3857247 TI - Malnutrition and the oral health of children in Ogbomosho, Nigeria. AB - Fifty-two Nigerian children, forty-five of whom were severely malnourished were examined to ascertain their level of oral health. Enamel hypoplasia, dental caries, gingivitis and periodontitis were given special attention in this study, and each of these disorders was found to be more frequently seen in the malnourished child. In a followup study of the malnourished children treated at the Baptist nutritional center there was improvement in the children's oral health, manifested by improvement of their gingivitis and periodontitis as the child's nutritional level and general health improved. Other oral findings were noted and recorded, including two patients with cancrum oris (noma) and others with angular chelitis, cleft palate, fungal infections, and a peculiar intrinsic black stain of the teeth, among others. PMID- 3857248 TI - Some thoughts on trade unionism in medicine. PMID- 3857249 TI - Divisional Abstracts, supported by the International College of Dentists. PMID- 3857250 TI - The biology of dentin and pulp. Proceedings of an international workshop. Charlotte, North Carolina, June 10-13, 1984. PMID- 3857251 TI - Odontoblast differentiation and the formation of the odontoblast layer. AB - Origin, cell kinetics, and phenotypic aspects of odontoblast cell lineage are described. Epithelial-mesenchymal interactions regulate odontoblast differentiation. These interactions appear to be mediated by the extracellular matrix. Possible molecular mechanisms of cell-matrix interactions are discussed. Questions still unanswered are recommended for investigation. PMID- 3857252 TI - The extracellular matrix of the dental pulp and dentin. AB - The dental pulp is a loose connective tissue, characterized by its specific anatomical location. Its extracellular components are obvious subjects for study, since such components are largely responsible for the physiological properties of the tissue. Several clinically important processes occur extracellularly, e.g., defense mechanisms such as inflammatory reactions and formation of calcified tissue. The dental mesenchyme has a crucial role during early tooth morphogenesis. The dental pulp, or rather the dental papilla, seems to have only an indirect role during dentinogenesis. This review discusses proteoglycans and glycosaminoglycans, fibronectin and other non-collagenous proteins, and the different types of collagen that have been studied in pulp connective tissue. With regard to its biochemical constituents, the pulp is similar to other loose connective tissues. Collagen type I is the major fibrous component, but collagen type III also constitutes a large portion. Fibronectin is present, as is a high content of proteoglycan. In the proteoglycans, all normally occurring connective tissue glycosaminoglycans can be demonstrated. The composition of the pulpal extracellular matrix during tooth development is quite different from that of the mature tooth. Thus, it is important not to draw any too-far-reaching conclusions about the situation in human pulp from results obtained by studying pulp from animal teeth with ongoing dentinogenesis. In spite of their common ancestry, pulp and dentin differ considerably in extracellular matrix composition. Proteoglycans and collagen type I are present in dentin. No type III collagen or fibronectin can be found in the dentin, although it is present in the dental pulp.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3857253 TI - Differentiation of pulpal cells and inductive influences of various matrices with reference to pulpal wound healing. AB - Based on recent literature, the dynamics of mesenchymal cells in transplantation of various tissues and matrices, as well as the origin of new odontoblasts which participate in the formation of the dentin bridge, are described. Experiments involving implantation of pulp, periosteum, perichondrium, treated dentin, and bone matrices were performed to emphasize the capability of these cells to produce hard tissue. Light and electron microscopic and autoradiographic studies were carried out to clarify the origin of replacement odontoblasts. It appears that the pulp cells, endothelial cells, and pericytes become undifferentiated mesenchymal cells following pulp exposure. These mesenchymal cells differentiate into odontoblasts, which subsequently produce a dentin matrix. Pulp tissues autografted to non-pulpal sites, elaborated bone (or osteodentin) matrix, but they did not graft to tubular dentin. An experiment on dentin bridge formation, using germ-free rats, demonstrated that the pulp tissue has intrinsic healing potential. Therefore, it was concluded that the ability of pulp tissue to elaborate hard tissues depends on its environment. PMID- 3857254 TI - Effects of calcium hydroxide-containing pulp-capping agents on pulp cell migration, proliferation, and differentiation. AB - The findings from the recent literature on pulpal cell responses to the application of calcium hydroxide to exposed pulps are described. The effect of calcium hydroxide on healthy and inflamed pulp is discussed. The effect of incorporation of calcium hydroxide in various pulp-capping agents is presented. The initial effect of calcium hydroxide applied to exposed pulp is the development of a superficial three-layer necrosis. The beneficial effect of calcium hydroxide is regarded as the result of the chemical injury caused by the hydroxyl ions, limited by a zone of firm necrosis against the vital tissue, and the toleration of calcium ions by the tissue. The firm necrosis causes slight irritation and stimulates the pulp to defense and repair. The observed sequence of tissue reactions is that which is expected when connective tissue is wounded. It starts with vascular and inflammatory cell migration and proliferation, to control and elimination of the irritating agent. This is followed by the repair process, including migration and proliferation of mesenchymal and endothelial pulp cells and formation of collagen. When the pulp is protected from irritation, odontoblasts differentiate, and the tissue formed assumes the appearance of dentin, i.e., the function of the pulp is normalized. The mineralization of the collagen starts with dystrophic calcification of both the zone of firm necrosis and the degenerated cells in the adjacent tissue, leading to deposition of mineral in the newly-formed collagen. The presence of calcium ions stimulates precipitation of calcium carbonate in the wound area and thereby contributes to the initiation of mineralization.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3857255 TI - Reaction paper: odontoblasts. PMID- 3857256 TI - The role of dental pulp--thoughts on the session on pulp repair processes. PMID- 3857257 TI - Innervation of teeth: qualitative, quantitative, and developmental assessment. AB - Anatomical characteristics of tooth innervation provide insights into functional capabilities as well as limitations of this organ. In this review, innervation will be discussed from two major viewpoints. The first part will present distribution of nerve fibers in the tooth; nerve pathways, both autonomic and sensory, will be discussed mostly from a descriptive standpoint. In the second part, quantitation of neural units along key points of the pathways will be presented at milestones in tooth and organism development and aging. PMID- 3857258 TI - The characteristics of intradental sensory units and their responses to stimulation. PMID- 3857259 TI - Pulpal, microvascular, and tissue pressure. PMID- 3857261 TI - New approaches to the neurophysiology of the dental pulp. PMID- 3857260 TI - Regulation of pulpal blood flow. AB - The regulation of blood flow of the dental pulp was investigated in dogs and rats anesthetized with sodium pentobarbital. Pulpal blood flow was altered by variations of local and systemic hemodynamics. Variation in pulpal hemodynamics was attained by means of close intra-arterial injections of adrenergic agonists (NE and ISO) and their antagonists (PBZ and Propranolol). Variation in systemic hemodynamics was achieved by hemodilution, hemo-concentration, hemorrhage, and SNP infusion. Macrocirculatory blood flow (ml/min/100 g) in the dental pulp was measured with both the 133Xe washout and the 15-microns radioisotope-labeled microsphere injection methods on the canine teeth of dogs, to provide a comparison of the two methods in the same tooth. Microcirculatory studies were conducted in the rat incisor tooth with microscopic determination of the vascular pattern, RBC velocity, and intravascular volumetric flow distribution. Pulpal resistance vessels have alpha- and beta-adrenergic receptors. Activation of alpha receptors by intra-arterial injection of NE caused both a reduction in macrocirculatory Qp in dogs and decreases in arteriolar and venular diameters and intravascular volumetric flow (Qi) in rats. These responses were blocked by the alpha-antagonist PBZ. Activation of beta-receptors by intra-arterial injection of ISO caused a paradoxical reduction of Qp in dogs. In rats, ISO caused a transient increase in arteriolar Qi followed by a flow reduction; arteriolar dilation was accompanied by venular constriction. These macrocirculatory and microcirculatory responses to ISO were blocked by the alpha-antagonist propranolol.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3857262 TI - Hemodynamics of the dental pulp. PMID- 3857263 TI - The dentin-predentin complex and its permeability: anatomical overview. AB - This paper provides an anatomical overview of the dentin-predentin complex and its permeability. An unique anatomical feature of this complex is the presence of dentinal tubules which extend peripherally from the odontoblast-predentin junction throughout the thickness of the tissue. The permeability of dentin is a consequence of the presence of these tubules. Thus, this review concentrates on the anatomy of dentinal tubules and, in particular, on those studies which in the last decade have increased our knowledge of this anatomy. The structure, size, and number of dentinal tubules and the relationship of these features to the permeability of the tissue are discussed. This is followed by a description of the contents of dentinal tubules, with particular emphasis being paid to the literature concerning the extent of the odontoblast process. PMID- 3857264 TI - Dentin-predentin complex and its permeability: physiologic overview. AB - The major channels for solute diffusion across dentin are the dentinal tubules. Since dentin permeation is proportional to the product of tubule number and diameter, both of which increase as the tubules converge on the pulp, we find that dentin permeability increases rapidly as the pulp chamber is approached. The presence of a smear layer of cutting debris on top of cut dentin decreases dentin permeability, especially when permeability is measured by fluid filtration. Further, intratubular material--such as mineral deposits, collagen fibrils, proteoglycan linings, bacteria, etc.--can greatly reduce dentin permeability. Although the presence of irregular or irritation dentin has been thought to greatly reduce dentin permeability, recent in vivo experiments in dogs indicate that the dentin permeability of freshly cut cavities prepared in sound dentin falls very rapidly (i.e., 50-60% in the first six hours) before any histologic changes can be detected, either in the pulp or the dentin. When dogs were depleted of their plasma fibrinogen, this rapid decline in dentin permeability following cavity preparation failed to take place. The results implicate leakage of plasma proteins from the underlying pulpal vessels. The proteins subsequently permeate the tubules, where they are either adsorbed to the tubule walls or physically trapped in such a way as to reduce dentin permeability. PMID- 3857265 TI - Dentin-predentin complex and its permeability: pathology and treatment overview. AB - This review paper focuses attention on tissue changes which may take place in dentin and on localized alterations in tissue formation in the predentin area. A number of reaction patterns has been described in dentin affecting both the inorganic and organic components. Dentinal tubules may become partly or completely obturated by growth of the peritubular dentin. Precipitation of mineral salts within the tubules, which may be a reprecipitation of minerals from adjacent demineralized dentin, represents a fundamentally different mode of obturation of dentinal tubules. Initially, demineralization selectively affects the peritubular dentin. If dentin is exposed to the oral environment, the surface layer may become hypermineralized. The surface layer of dentin, exposed by grinding, becomes covered by a smear layer. Displacement of the contents of the tubules or of the odontoblasts is a characteristic change in the organic components. Odontoblast destruction or degeneration will lead to a lack of, or reduced, predentin formation. Changes in the protein components which lead to alterations in dentin permeability have also been reported. The structure of the interface between dentin and localized formations of irregular secondary dentin varies considerably. If there is no tubular communication between primary and secondary dentin, the interface will act as an impermeable barrier. Changes in dentin, including irregular secondary dentin formation, affect the permeability of the tissue. Such changes are clinically important for the outcome of all types of restorative work performed on vital teeth. PMID- 3857266 TI - Dentin-predentin complex and its permeability. Reactor paper. PMID- 3857267 TI - The biology of dentin and pulp. Consensus report. PMID- 3857268 TI - Ethics . . . and the quest for excellence in the profession. PMID- 3857269 TI - Humanism and the profession(al). PMID- 3857270 TI - The relationship of the profession(al) to society. PMID- 3857271 TI - Principles of ethics. PMID- 3857272 TI - Ethics in dental medicine: a framework for moral responsibility in dental practice. PMID- 3857274 TI - Teaching ethics in dentistry. AB - This paper describes a curriculum project designed to help dental students identify, reason about, and adequately resolve ethical problems in their chosen profession. The project involved application of a theoretical approach to the study of ethical development that had not been applied previously in professional education. Tests were designed to measure the abilities defined by the theory and used to evaluate the program and to monitor student progress. To date, studies of student abilities and attitudes clearly indicate that the curriculum is needed. Learning activities, created to promote the abilities, are based on studies of the real-life ethical problems confronting dentists and dental students. A program of research and development has been established to study the influence of this curriculum on the abilities defined, and to link them to clinical performance. Half of the dental schools in the United States have requested these materials. Suggestions are made to professional schools considering expanding the teaching of ethics. PMID- 3857273 TI - Measuring dental students' ethical sensitivity. AB - This paper describes the development of stimulus materials and scoring procedures to measure an individual's ability to recognize the ethical issues often hidden within the dentist's professional problems. The importance of this ability is discussed as it relates to other abilities thought to be necessary conditions for ethical or moral behavior. Dental students completed the ethical sensitivity test and Rest's test of moral reasoning. The sensitivity test requires transcribing verbal responses to audio dramas, a technique that: (1) elicits sufficient data for making inferences about ethical sensitivity, (2) produces good interjudge agreement and interrater reliability, and (3) measures variability in student performance. Data indicate high internal consistency compared with previous efforts to measure components of sensitivity (e.g., empathy), acceptable test retest reliability for a subsample. and the distinctiveness of sensitivity and reasoning scores. The results have broad application for the teaching of ethics and suggest new directions for the study of professional socialization. PMID- 3857276 TI - Curriculum guidelines on predoctoral oral and maxillofacial surgery. PMID- 3857275 TI - Curriculum guidelines for postdoctoral oral diagnosis/oral medicine. PMID- 3857277 TI - Characteristics of dental educators academic year 1984-85. PMID- 3857278 TI - Genes that affect the shape of the murine mandible. Congenic strain analysis. AB - Small specific regions of the adult murine mandible are found to be expanded or contracted by the effects of genes sorted out as passenger genes in a set of congenic strains. The large estimated number of such genes could provide a genetic basis for morphological change during speciation. PMID- 3857279 TI - Decrease in HLA-DR-positive monocytes in patients with systemic lupus erythematosus (SLE). AB - Monocyte populations expressing HLA-DR antigens were studied in SLE patients by flow cytofluorometry with indirect immunofluorescence. Both the number of HLA-DR positive monocytes and the expression of HLA-DR antigens on monocytes were markedly decreased in active SLE patients and were recovered to the normal level in inactive SLE patients. Because Ia-positive monocytes play a regulatory role for several immune responses, the decrease in HLA-DR-positive monocytes will result in abnormal regulations of immune responses and will play some critical role in the pathogenesis and the process of SLE. PMID- 3857280 TI - Flow cytometric characterization of normal and variant cells with monoclonal antibodies specific for glycophorin A. AB - Quantitative immunofluorescence measurements were performed on erythrocytes labeled with monoclonal antibodies to glycophorin A (GPA) to assess the level of binding of these antibodies to normal and variant cell types. The seven antibodies used in this study include two that bind preferentially to the M form of GPA, three that bind preferentially to the N form, and two that bind equally well to both. Flow cytometric analysis of mixtures of cells differing in M,N type showed binding specificities of greater than 100-fold for most of the antibodies, and showed that three antibodies bind cell-bound GPA with an affinity of approximately 10(9) M(-1). These data also showed that the level of expression of GPA varies by less than 10% from cell to cell and from individual to individual. Flow measurements were also done on human erythrocytes with the following variant forms of glycophorin: Mc, Mg, Mk, En(F), En(UK), Mi-I, Mi-II, Mi-III, S-s-U-, Tn+, and St(a+). Other cell types analyzed included erythrocytes from chimpanzee, rhesus, African green, and capuchin monkeys, and cells from the human erythroleukemia cell line, K562. Flow analysis with our seven antibodies showed these cell types have distinctive labeling patterns consistent with the known or inferred altered glycophorins presented on these cells. In most cases, variant alleles were expressed at normal levels. Our results support other observations that the variants En(UK) and St(a+) contain hybrid GPA-GPB proteins, and suggest that their level of expression is largely determined by the 3' end of the hybrid genes. PMID- 3857281 TI - [Differential diagnosis between leiomyomata uteri and adenomyosis using CA 125 as a new tumor marker of ovarian carcinoma]. AB - To differentiate pre-operatively between leiomyomata uteri and adenomyosis, we measured serum levels of an antigen (CA 125) common to most nonmucinous epithelial ovarian carcinoma in patients with benign uterine tumor (11 of leiomyomata uteri, 7 of adenomyosis and 1 of adenomyosis with leiomyomata uteri). CA 125 in serum samples pre and postoperatively were measured using an RIA Kit. The normal range of CA 125 levels was below 35U/ml. The mean CA 125 level (+/- S.D.) was 18.3 +/- 6.1U/ml in patients with leiomyomata uteri and 93.3 +/- 49.4U/ml in those with adenomyosis. Student's t-test showed a significant correlation (0.001 less than p less than 0.01). The mean CA 125 level in patients with adenomyosis was statistically higher than that in disease-free women. Among 7 patients with surgically demonstrable adenomyosis, the CA 125 values were over 35U/ml (87.5%). In all 11 patients with surgically demonstrable leiomyomata uteri, the CA 125 level was below 35U/ml. The CA 125 level in patients with adenomyosis gradually decreased postoperatively and in all was below 35U/ml up to one month postoperatively. Using this approach, leiomyomata uteri and adenomyosis can be differentiated, pre-operatively. PMID- 3857282 TI - Fluoride uptake in vivo by enamel with "Fluocaril Bifluore 250" and "Colgate". PMID- 3857283 TI - [Incidence of interappointment pain after multiple visit endodontic procedures]. PMID- 3857284 TI - An experimental study of microvascular patency by micro-arteriography using dental X-ray and film. PMID- 3857285 TI - [The effect of ascorbic acid on the orodental region]. PMID- 3857286 TI - [A case report of a compound composite odontoma and a review of the literature on odontomas]. PMID- 3857287 TI - [Clinical studies of fibroma]. PMID- 3857288 TI - [Mercury level in the blood of dentists]. PMID- 3857289 TI - [The amount of mercury vapor in dental offices in Korea]. PMID- 3857290 TI - Bile acid induction of 7 alpha- and 7 beta-hydroxysteroid dehydrogenases in Clostridium limosum. AB - When grown in the presence of bile acids, two strains of Clostridium limosum were found to contain significant amounts of NADP-dependent 7 alpha/7 beta hydroxysteroid dehydrogenase and NAD-dependent 7 alpha-hydroxysteroid dehydrogenase which were active against conjugated and unconjugated bile acids. No measurable activity could be found when deoxycholic acid (3 alpha, 12 alpha dihydroxy-5 beta-cholan-24-oic acid) was used as substrate. No 7 beta hydroxysteroid dehydrogenase activity and only a trace of 7 alpha-hydroxysteroid dehydrogenase activity could be demonstrated when bile acid was deleted from the growth medium. If bile acid was added after the time of inoculation, the amounts of 7 alpha/7 beta-hydroxysteroid dehydrogenase were greatly reduced. Enzyme enhancement was blocked by addition of rifampicin. The 7 alpha/7 beta hydroxysteroid dehydrogenase components had pH optima of approximately 10.5. Both the 7 alpha/7 beta-hydroxysteroid dehydrogenase activities were heat-labile, with the 7 beta-component being the more stable of the two. When ranked according to the level of enzymes induced, the order in increasing bile acid induction power on an equimolar scale (0.4 mM) was: 7-ketodeoxycholic acid, cholic acid, chenodeoxycholic acid, and deoxycholic acid. Both 7-ketolithocholic acid and ursodeoxycholic acid were ineffective as enzyme inducers. Optimal induction was achieved with high concentrations of cholic acid (5 mM) and a harvest time of 24 hr. Addition of ursodeoxycholic acid to medium containing optimal concentrations of deoxycholic acid suppressed enzyme induction.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3857291 TI - Effect of inhibition of prostaglandin synthesis on cervical softening and uterine activity during ovine parturition resulting from progesterone withdrawal induced by epostane. AB - The effects of an inhibitor of 3 beta-hydroxysteroid dehydrogenase (epostane) on uterine activity and cervical softening have been studied in eight sheep during late pregnancy. Treatment with epostane led to a rapid decline in the concentration of progesterone measured in utero-ovarian venous plasma, to less than 10% of the pretreatment value within 30 min of bolus injection. This was followed by a significant (P less than 0.02) increase in the concentrations of metabolites of prostaglandins E and F in utero-ovarian venous plasma and uterine activity similar to that seen in the final stages of normal labour. Measurements of cervical tissue extensibility made ex vivo showed the cervix to have softened considerably. These changes occurred without any significant change in the concentration of oestradiol-17 beta in utero-ovarian venous plasma. Infusion of mefenamic acid, an inhibitor of prostaglandin synthesis, prevented the changes in uterine activity and cervical softening that occurred after injection of epostane alone. Mefenamic acid also reduced the increase in concentrations of metabolites of prostaglandins E and F in plasma, although the concentration of progesterone in these animals showed the same abrupt fall which occurred in sheep after injection of epostane alone. These results suggest that progesterone withdrawal, in the absence of any subsequent rise in circulating oestrogen concentrations, is sufficient stimulus to induce cervical softening in the ewe. Cervical softening following progesterone withdrawal can be prevented by inhibition of prostaglandin synthesis. PMID- 3857292 TI - Dissociation between testicular morphogenesis and functional differentiation of Leydig cells. AB - The aim of the study was to determine whether Leydig cells differentiate in vitro in gonads in which the formation of seminiferous cords is prevented by culture in a medium containing fetal calf serum. Appearance of 3 beta-hydroxysteroid dehydrogenase-positive cells and release of testosterone in the medium occurred at the same age irrespective of whether or not the gonads developed seminiferous cords. It is concluded therefore that testicular morphogenesis with the formation of seminiferous cords is not a prerequisite for the emergence and functional differentiation of Leydig cells. PMID- 3857293 TI - Childhood cancer in the Northern Region, 1968-82: incidence in small geographical areas. AB - The place of residence of all cases of childhood cancer occurring in the Northern Region from 1968 to 1982 has been analysed by electoral wards. The wards have been ranked according to rate and Poisson probability. Both rankings show a wide geographical scatter throughout the region of areas with an apparent excess incidence of cancer. These areas are not confined to the Cumbrian coast. PMID- 3857294 TI - Parotid enlargement in bulimia. PMID- 3857295 TI - Evaluation of indium-111-2-mercaptopyridine-N-oxide for labeling leukocytes in plasma: a kit preparation. AB - Pure neutrophils, lymphocytes, and mixed leukocytes have been labeled in vitro with 111ln chelated to a nontoxic, water soluble agent 2-mercaptopyridine-N-oxide (Merc). Cells were labeled in isotonic salt-balanced medium with preformed [111ln] Merc (yield greater than 95%), or in 0.5 ml autologous plasma by incubation with dry Merc first and then with 111ln (yield 75%). The latter method facilitated a kit procedure that required 2 micrograms dry Merc when acid citrate dextrose was used as anticoagulant or 20 micrograms when heparin was used. Labeling efficiency was dependent on cell concentration and pH. Labeled cells accumulated avidly in experimental abscesses and provided abscess/blood ratios of greater than 75 at 24 hr postinjection. In dogs, the liver uptake of labeled cells was only 18.8 +/- 7.1% compared to that of 48.5% when cells were labeled with [111ln]oxine. PMID- 3857297 TI - Stability associated with mandibular advancement treated by rigid osseous fixation. AB - Relapse after a mandibular sagittal ramus split osteotomy (SSO) fixed by transosseous wire has been shown to occur. Authors who use rigid screw fixation claim a lesser incidence of such relapse. Nine subjects with horizontal mandibular deficiency treated by an SSO and fixed with bone screws were prospectively studied. Serial cephalometric radiographs were traced and superimposed on the sella-nasion line and anterior cranial base structures. A markedly reduced horizontal movement during the first six weeks at both points B and Pg, followed by a slight advancement at six months, was observed. Concomitantly, the surgically increased facial height was shown to subsequently decrease during both those time intervals. The stability of this procedure warrants further investigation. PMID- 3857296 TI - ABC's periodontics. "J" is for juvenile periodontitis. PMID- 3857298 TI - The facial plethysmograph: a new instrument to measure facial swelling volumetrically. AB - A critical review of methods used to evaluate postoperative facial swelling is presented. A new, noninvasive method using a feeler arm to trace and measure facial contours is described. The overall accuracy and reproducibility of this method was tested by measuring acrylic "mock swellings." The results suggest that the method was accurate to within 5% in measuring swellings of known volume. The reproducibility of replicate measures also showed a low level of error (3.3%). This device may provide a unique method for the systematic study of treatments designed to minimize postoperative facial swelling. PMID- 3857299 TI - Microsurgical correction of the injured inferior alveolar nerve. AB - The pathology of inferior alveolar nerve injuries is discussed and the general and special guidelines for microsurgical reconstructive procedures are presented. Twenty-three cases are summarized: 22 cases showed marked restoration of nerve function after surgery. PMID- 3857300 TI - Alveolar wound healing and ridge remodeling after tooth extraction in the rat: a histologic, radiographic, and histometric study. AB - Healing of extraction wounds in rats was analyzed by histologic, radiographic and histometric methods at 0, 7, 14, 30, 60 days after tooth removal. Total alveolar volume, volume density of bone, percentage of bone formation, bone resorption areas, and height of both vestibular and lingual crests were analyzed. Total alveolar bone volume and bone density in the apical third increased from 0 to 60 days. Maximum bone formation was observed at 14 days, whereas the greatest bone resorption was observed seven days after extraction. The height of the lingual crest was lowest 14 days postextraction and then increased progressively to day 60. PMID- 3857301 TI - Solitary palatal ulcer. PMID- 3857302 TI - Oral focal mucinosis. AB - Two cases of oral focal mucinosis are described. Both were diagnosed clinically as fibroma of the gingiva. The clinical and histopathologic features of this unusual lesion are discussed. PMID- 3857303 TI - Vascular leiomyoma of the oral cavity. PMID- 3857304 TI - Giant submandibular gland calculi. PMID- 3857305 TI - Pancreatic carcinoma metastatic to the mandibular gingiva. PMID- 3857306 TI - Maintenance of condylar position after sagittal split osteotomy of the mandible. PMID- 3857307 TI - Insulation for the electrosurgical tip. PMID- 3857308 TI - The anatomy and electrical activity of the platysma muscle. AB - Dissection of seven cadavers showed that the platysma muscle may cover large parts of the masseter muscle. The platysma may thus be a significant source of artefact activity when recording the masseteric activity with surface electrodes. This is illustrated by a patient-case. The electrical activity of the platysma muscle was studied during jaw movements in normal, healthy subjects. Activity was regularly recorded during the latter half of large vertical jaw opening movements and, in five of the seven subjects, in the ipsilateral platysma muscle also during combined lateral-vertical jaw opening movements. The platysma may, therefore, in some individuals, have a functional role during the opening phase of chewing cycles when this has a marked lateral component. PMID- 3857309 TI - The reaction zone around experimental amalgam alloy particles of Ag-Cu eutectic composition. AB - An electron microprobe was used to investigate the composition and microstructure of the reaction zone occurring around experimental particles of approximately Ag Cu eutectic composition in two experimental dental amalgams. This study formed the basis for the examination, described in a subsequent paper, of the reaction zones in several commercially available amalgams. Techniques of phase composition analysis were further developed in order to identify and quantify the component phases in the regions of the reaction zone. The clumped, outer, more darkly shaded region of the zone contained predominantly eta 1 (Cu6Sn5) phase. The inner, more lightly shaded region of the reaction zone was found to contain substantial quantities of eta 1, gamma 1, a Cu-Hg phase and a Ag-Cu component. PMID- 3857310 TI - The reaction zone around commercially available amalgam alloy particles of Ag-Cu eutectic composition. AB - An electron microprobe was used to investigate the composition and microstructure of regions in the reaction zones around particles of approximately Ag-Cu eutectic composition in commercially available and experimental dispersion modified amalgams. Two distinct regions were identified. Techniques of phase composition analysis were further developed in order to identify and quantify the component phases present in the two regions. The outer, somewhat clumped region contained principally a network of strands and particles of eta 1 (Cu6Sn5) composition and some gamma 1 phase. After phase composition analysis, the inner region was found to contain eta 1 phase and substantial quantities of gamma 1 phase, a Cu-Hg phase (probably Cu4Hg3 formulation) and unreacted Ag-Cu. The two regions may be best described as eta 1-rich and eta 1-sparse, respectively. PMID- 3857311 TI - Demonstration of chewing motor disorder by recording peripheral correlates of mastication. AB - Chewing motor performance was examined in twenty-one patients. Twelve patients had TMJ dysfunction syndrome, eight had occlusal trauma, and one had CNS impairment. Surface electromyography and three-dimensional jaw movement was recorded. Discomfort was recorded by the patient during chewing of beefstick. Specific changes in mandibular movement were related to the presence of pain, discomfort and other symptoms of the TMJ dysfunction syndrome. PMID- 3857312 TI - The fracture toughness (KIC) of amalgam. AB - The fracture toughness (KIC) has been measured (at 1 week) for a selection of sixteen amalgam products. This included low copper (i.e. Cu less than 6%) and high copper (both single component and admixed) products in milled and spherical powder forms. The results have shown that the fracture toughness decreases progressively as the copper content increases. The admixed high copper products possess superior fracture toughness to those containing a single component powder. These results have been attributed to differences in the microstructures produced by changes in composition and form in which the copper addition is made. PMID- 3857313 TI - The pattern of adsorption of cationic antiseptics to polymethylmethacrylate. AB - Few studies have reported the maximum potential of surfaces to adsorb the cationic antiseptics and few comparisons between antiseptics have been carried out. The purpose of this investigation was to measure the maximum uptake of alexidine, cetyl pyridinium chloride, chlorhexidine gluconate and chlorhexidine acetate to polymethylmethacrylate and by the construction of adsorption isotherms determine the pattern of molecular attachment to the recipient surface. The mean maximum adsorption findings for these antiseptics demonstrated significantly greater uptake of cetyl pyridinium chloride than the other antiseptics and significantly less uptake of alexidine compared with the other antiseptics. All four antiseptics showed a Langmuir type adsorption isotherm consistent with the formation of a monolayer of molecules on the recipient surface. For chlorhexidine preliminary studies demonstrated that the pattern of adsorption was not altered by saliva pre-treatment of surfaces. No evidence of molecular multilayering was observed even at higher concentrations of the antiseptics. However, the maximum uptake on to the surface was significantly increased when no post-treatment washings were carried out. It was concluded that this increased uptake would be unlikely to play an important role in antiplaque activity because of its relative instability. The pH dependency for the adsorption of these antiseptics was demonstrated such that as previously observed for chlorhexidine gluconate at low pH adsorption is almost completely, or completely, prevented. PMID- 3857314 TI - A method to determine the loss of substance of dental restorations. AB - A method is described for quantitative in vivo wear measurements on Class I and II composite restorations. Class I gold inlays were made in an acrylic premolar and molar. Over the occlusal parts of the teeth cast silver caps were made after releasing the surface of the inlay with tinfoil. Wear on the restorations was simulated by grinding away some gold from the inlay. Silicon impressions of the teeth were made with the caps both before and after this simulation. The volume and the average thickness of the removed gold was measured from the weight of the enclosed impression material in the cap before and after the wear simulations, the density of the tinfoil and the impression material as well as thickness and the weight of the tinfoil-release. Values expected for the volume and the average thickness of the removed gold were calculated from the weight of the restored acrylic teeth before and after the wear simulation, the weight, the density and the thickness of the tinfoil and the density of the gold used for the inlays. Measured and expected values are linearly correlated (r = 0.97). An average wear thickness of the occlusal surface of a particular tooth of at least 30 micron can be detected. Because of its simplicity, inexpensiveness and accuracy the wear measurement method is highly productive and suitable for large scale and long term clinical research on the wear behaviour of posterior composites. PMID- 3857316 TI - Gnathosonic monitoring of occlusion of complete and partial dentures. AB - The durations of occlusal sounds of edentulous patients wearing complete dentures and of partially edentulous patients with and without partial dentures were measured. In general the durations of the sounds decreased after adjustment of occlusion and after periods of wearing the dentures, but in a cross-section study of sound duration of old complete dentures (mode 16 years) an increased sound duration was observed. PMID- 3857315 TI - The effect of iron on in vitro decalcification of human tooth enamel. AB - The effect of iron chloride on an in vitro acid attack of human enamel was studied. Slices of teeth were covered with varnish except for a window left on one of the enamel surfaces for exposure. The iron salt was used as a supplement to acid gel, or as pretreatment of the enamel surfaces before exposure to the pure gel. Differences in light transmission of the experimental and control specimen from the radiographs taken before and after immersion in the decalcifying media were assessed quantitatively. The increase in radio-opacity of the enamel sections incubated in the iron-containing acid media was attributed to a lower degree of enamel decalcification. PMID- 3857317 TI - Evaluation of the effect of anxiety on the masseteric silent period duration. AB - The duration of the masseteric silent period (SPD) and environmental stress are parameters which have been associated with the symptoms of masticatory dysfunction. In this study, the relationship between differing levels of anxiety and the masseteric silent period duration, for nineteen subjects reporting a history of symptoms of mandibular dysfunction, was evaluated by a stress model based on the Sta X-1 anxiety test. The results suggest that the durations of masseteric silent periods were not significantly affected by differing levels of anxiety. PMID- 3857318 TI - Effect of oxygen on the corrosion of dental amalgam. AB - The anodic and cathodic polarization of five dental amalgams were determined as a function of oxygen concentration in Ringer's solution and artificial saliva. The results indicate an anodic polarization behaviour dependent on Cl ion concentration and a corrosion potential determined primarily by oxygen concentration. At high oxygen concentrations the corrosion rates of traditional and copper enriched amalgams were equivalent. PMID- 3857319 TI - Long-term observations of an increased occlusal face height obtained by a combined orthodontic/prosthetic approach. AB - Twenty individuals received an increased occlusal face height by orthodontic means (a partial bite-raising splint). After splint treatment some of the anterior teeth were capped at the new occlusal face height. The average increase from start of splint treatment till after crown cementation was 1.9 mm. The stability of the vertical relations of the face after this treatment was studied. The average observation time was 67 months, i.e. 5.5 years. The modes of reaction were highly individual. A certain average relapse of the occlusal face height did occur, mostly in the course of the first 6 months after crown cementation. However, in no case did the increased face height revert to basis. In the period from 6 to 67 months after crown cementation twelve out of nineteen patients showed practically completely stable vertical relations. PMID- 3857320 TI - Results of epidemiological examinations of the temporomandibular joint in adolescents and young adults. AB - An epidemiological investigation of the temporomandibular joint in 800 persons was undertaken, including two groups of 400 persons aged 15-18 and 19-22 years. The numbers of boys and girls was about the same. Interview and clinical examination comprised morphological and functional features of the stomatognathic system. The TMJ examination carried out included mandibular movements, pain and sound symptoms. The results of the examinations were noted, counted by electronic methods and statistically analysed. From the material, two groups were selected: without TMJ symptoms (OTMJ group) and with TMJ disorders (TMJ group). TMJ disorders were evident in 67.62% of the examined persons and this was common to both age groups. In groups with TMJ disorders a significant incidence of girls was found. In groups with TMJ disorders the number of statistically significant pathological features in the stomatognathic system increased with age. TMJ disorders appeared in both age groups in various forms, separately or in combination, with different frequency. With reference to the number and kind of symptoms obtained on interview and/or on clinical examination, four degrees of intensity of TMJ disorders have been defined and their incidence discussed. PMID- 3857321 TI - Transmission and colonization of Actinobacillus actinomycetemcomitans in localized juvenile periodontitis patients. AB - Actinobacillus actinomycetemcomitans is a Gram-negative oral microorganism, which has been implicated in the etiology of localized juvenile periodontitis and in severe medical infections such as bacterial endocarditis. This study evaluated the ability of periodontal probes to transmit A actinomycetemcomitans from juvenile periodontitis lesions to healthy gingival sulci in the same patient. Localized juvenile periodontitis patients exhibiting first molar and incisor alveolar bone loss and with large numbers of A actinomycetemcomitans in deep periodontal pockets were included in this study. A periodontal probe was inserted into periodontal pockets of 6 mm or greater depth. The probe was then placed into a healthy gingival sulcus of 3 mm or less, in the same subject. Fifty-five transfers by probing were made and A actinomycetemcomitans in both the donor and recipient sites was assessed by a selective culture technique. The results indicate that periodontal probes can become contaminated with A actinomycetemcomitans from juvenile periodontitis lesions during routine dental examinations and can transfer this microorganism from infected to previously uninfected sites. However, A actinomycetemcomitans inoculated into the healthy gingival sulci did not permanently colonize these sites since the organisms were eliminated within 3 weeks. PMID- 3857322 TI - Focus of epithelial dysplasia arising in hereditary gingival fibromatosis. AB - The gingiva of a 32-year-old black male was biopsied for evidence of vasculitis, but instead an area of epithelial dysplasia was found. Further investigation revealed that the patient and several members of his family had hereditary gingival fibromatosis. Treatment included four quadrants of gingivectomy plus inverse bevel incisions for trimming those areas which were too thick for simple gingivectomy. Histopathologic examination of the excised tissues supported the diagnosis of gingival fibromatosis, but no other areas of epithelial dysplasia were seen. To our knowledge, this is the only reported instance of a premalignancy or malignancy arising in gingival fibromatosis, and thus there is no reason to regard the gingival disorder as predisposing to carcinoma. However, the pedigree reported here supports a previous suggestion that hereditary gingival fibromatosis is not as rare among blacks as the literature has indicated. PMID- 3857323 TI - The botryoid odontogenic cyst. Report of a case and review of the literature. AB - The botryoid odontogenic cyst is a morphologic variant of developmental cysts of odontogenic epithelial residue, i.e., lateral periodontal cysts and gingival cysts. Such variants have distinctive clinical and histologic characteristics, including a lobular appearance in situ, multiple cystic spaces lined by thin, nonkeratinized epithelium with focal plaque-like thickenings and occasional glycogen-rich clear cells. Lateral periodontal cysts most likely arise from rests of Malassez, while gingival cysts certainly arise from rests of Serres. When cortical perforation occurs, the origin of the cyst may be determined on the basis of the pattern of bone resorption. The term botryoid odontogenic cyst should be reserved for those developmental cysts of odontogenic epithelial residue that have a grossly lobulated appearance in addition to characteristic histomorphologic features. Its use should be restricted to the gross and histopathologic description rather than as a modifier of the definitive diagnosis. A botryoid variant of a gingival cyst with cortical perforation is presented. PMID- 3857324 TI - Presidential address. PMID- 3857325 TI - A compressive strength study of an all-ceramic crown. AB - Eighteen crowns were subjected to the same occlusal loading. The porcelain-fused to-metal crown was more than twice as resistant to the load than the Cerestore crown and almost four times stronger than the porcelain crown. These tests show that porcelain fused to metal has demonstrated its capability as a strong posterior restoration. The Cerestore crown, though superior to the porcelain crown, is significantly less resistant to fracture than the porcelain-fused-to metal restoration. PMID- 3857326 TI - Mercury vapor produced during sterilization of amalgam-contaminated instruments. PMID- 3857327 TI - Abrasion resistance of three types of esthetic veneering materials. PMID- 3857328 TI - Photoelastic analysis of stress induced from insertion of self-threading retentive pins. PMID- 3857329 TI - Horizontal pins: a study of tooth reinforcement. PMID- 3857330 TI - Quantitative evaluation of proximal tooth movement effected by wedging: a pilot study. AB - The major purpose of this pilot study was to develop a method to accurately measure proximal tooth movement. A preliminary clinical evaluation of anterior and posterior tooth movement was performed with five patients. The patients were carefully chosen to eliminate as many variables as possible. The controlled patient criteria included periodontal health, proximal contacts, the age of the patients, and the teeth selected for anterior and posterior displacement. The small sample size dictates that additional experimentation must be performed before definitive conclusions can be drawn. PMID- 3857331 TI - Fit of crown wax patterns after removal from the die. AB - The effects of loading the wax pattern before investment was determined. Various loads were placed on the pattern after its margin was remodeled. The patterns were replaced on the die with a load of 50 gm before investment. For loads of 0, 250, and 1000 gm, the average elevation of the pattern on the die was found to be greater by 29, 56, and 19 micron, respectively, than before removal from the die. Repetitive loading showed that the plastic deformation in wax was less in the second than in the first cycle for a specific load. This decrease in plastic deformation may explain the improved adaptation of the pattern after a load of 1000 gm. PMID- 3857332 TI - Microleakage of conventional and high-copper amalgam restorations. PMID- 3857333 TI - Porosity reduction and its associated effect on the diametral tensile strength of activated acrylic resins. AB - Each acrylic resin tested is basic to the armamentarium of the clinical dentist. From this study it is apparent that there exist several possible mechanisms that will aid in the reduction of porosity and subsequently enhance the tensile strength properties of chemically activated acrylic resins. With the manufacturer's recommended powder to liquid ratio mixtures, indications are that only small increases in curing pressure (approximately 0.68 MPa) are required to substantially enhance strength levels of the test materials. Therefore, when cured under conditions that avoid residual stress buildup, the small increases in pressure attainable by modified pressurization devices may indeed be of benefit in reducing porosity and enhancing the tensile strength of the acrylic resins. Similar increases in strength appear possible with various combinations of powder particle sizes and powder/liquid ratios used in an effort to reduce the monomer concentration in clinically desirable acrylic mixtures. It is important to realize that alteration of powder/liquid ratio and powder particle size mixtures offers a method of reducing porosity without the addition of external pressure. However, at this time it is not recommended that these sophisticated alterations of the basic resin components be performed by the clinician. PMID- 3857334 TI - A comparison of the physical properties of a room temperature vulcanizing silicone modified and unmodified. AB - RTV silicone MDX 4-4210 unmodified and modified with the addition of 5%, 10%, and 15% 360 MF 100cs was tested for the following physical properties: tensile strength, ultimate elongation (ASTM D412 die C), tear resistance (ASTM D624, die C), and Shore A Durometer hardness (ASTM D2240). The initial mechanical properties of unmodified RTV silicone were superior to those of RTV silicone modified with 5%, 10%, and 15% 360 MF except for hardness. The value for each property measured was found to decrease linearly with the amount of 360 MF added. If additional softness is desired, it can be achieved with the addition of 360 MF to RTV silicone at the expense of decreased strength, elongation, and tear resistance. Even with the addition of 15% 360 MF the values for tear resistance and elongation were in the standard range. The tensile strength of unmodified RTV silicone fell below the accepted values. PMID- 3857335 TI - Comparative study of two treatment methods for internal derangement of the temporomandibular joint. AB - Orthopedic mandibular repositioning and flat plane occlusal splint therapy were compared in the treatment of 20 patients with internal TMJ derangement with reduction. The following conclusions can be drawn. Mandibular repositioning treatment produces significant subjective and objective improvement in the dysfunction of patients with internal joint derangements with reduction. Flat plane occlusal splint treatment produces no significant change in the dysfunction level of patients with internal joint derangements with reduction. Mandibular repositioning treatment may eliminate the reciprocal click of internal joint derangement with reduction. To realize improvement in dysfunction of internal joint derangement, it appears that the reciprocal click must be eliminated. Mandibular repositioning treatment produces a significant improvement in muscle pain associated with internal joint derangement. PMID- 3857336 TI - Development of anterior disk displacement in the temporomandibular joint: an autopsy study. PMID- 3857337 TI - Occlusion and mandibular dysfunction: a clinical study of patients referred for functional disturbances of the masticatory system. AB - Fifty patients were selected according to age (less than 40 years) and dentition (full complement of natural teeth) from a large group referred for treatment of functional disturbances of the masticatory system. They answered a questionnaire and were examined clinically for evaluation of the severity of their symptoms and signs according to the Helkimo dysfunction indexes. The occlusal conditions recorded included contacts in centric and eccentric mandibular positions, various defined occlusal patterns, occlusal interferences, and dental attrition. The occlusal conditions varied considerably but did not show significant correlations with signs and symptoms of mandibular dysfunction. These results suggest that the occlusal variables studied do not contribute to the severity of the signs and symptoms of dysfunction. While it is tempting to propose that our results suggest an argument for dysfunction, it must be admitted that the precise role of occlusion remains unclear. PMID- 3857338 TI - The influence of altered working-side occlusal guidance on masticatory muscles and related jaw movement. AB - The effect of four different occlusal situations (group function, canine guidance, working side occlusal interference, and hyperbalancing occlusal interference) on EMG activity in jaw elevator muscles and related mandibular movement was investigated on 12 subjects. With a computer-based system, EMG and displacement signals were collected simultaneously during specific functional (unilateral chewing) and parafunctional tasks (mandibular gliding movements and various tooth clenching efforts) and analyzed quantitatively. When a naturally acquired group function was temporarily and artificially changed into a dominant canine guidance, a significant general reduction of elevator muscle activity was observed when subjects exerted full isometric tooth-clenching efforts in a lateral mandibular position. The original muscular coordination pattern (relative contraction from muscle to muscle) remained unaltered during this test. With respect to unilateral chewing, no significant alterations in the activity or coordination of the muscles occurred when an artificial canine guidance was introduced. Introduction of a hyperbalancing occlusal contact caused significant alterations in muscle activity and coordination during maximal tooth clenching in a lateral mandibular position. A marked shift of temporal muscle EMG activity toward the side of the interference and unchanged bilateral activity of the two masseter muscles were observed. The results suggest that canine-protected occlusions do not significantly alter muscle activity during mastication but significantly reduce muscle activity during parafunctional clenching. They also suggest that non-working side contacts dramatically alter the distribution of muscle activity during parafunctional clenching, and that this redistribution may affect the nature of reaction forces at the temporomandibular joints. PMID- 3857339 TI - Histopathologic findings in temporomandibular joints of aged individuals. AB - Twenty-four TMJs from well preserved 62- to 97-year-old human cadavers, 12 men and 12 women, were used in this study. The TMJs were routinely processed to identify (1) the histologic and histopathologic changes present in the articulations and (2) the components of the joint most frequently affected by these changes. The most significant histopathologic findings were (1) intense fibrocartilaginous proliferations of the condylar head and articular eminence linings, (2) neovascularization or myxomatoid degenerative changes in articular disks, and (3) proliferation of synovial villi, subsynovial tissue, and muscular fibers. The components of the joint most frequently affected were (1) the condylar head (30.4%), (2) the articular disk (21.7%), (3) the synovial lining (13%), (4) the articular eminence (8.6%), and (5) the lining of the articular fossa (4.3%). Five joints were considered to be within normal histologic limits, and one joint was excluded from the study because of metastatic malignancy. PMID- 3857340 TI - Vertical dimension record: a three dimensional phenomenon. Part I. AB - This article presented data on 92 edentulous patients in the age group of 54 to 84 years. The data describe the changes in vertical dimension of rest observed under different clinical conditions associated with the treatment procedures for construction of complete dentures. PMID- 3857341 TI - Biocompatibility evaluation of resins in hamsters. PMID- 3857342 TI - Lip injury guard. AB - A successful extraoral chin-stabilized lip injury guard is described that protects the lower lips of patients in vegetative coma from self-inflicted injury. The guard does not interfere with routine daily mouth care and will not compromise the patient's airway if it were dislodged. PMID- 3857344 TI - Abstracts: "1984 and beyond: new perspectives for public health dentistry". American Association of Public Health Dentistry. 47th annual meeting. Atlanta, Georgia, October 18-20, 1984. PMID- 3857343 TI - Isolation and partial characterization of mutants of the trypanosomatid Crithidia fasciculata and their use in detecting genetic recombination. AB - Crithidia fasciculata was used as a model trypanosomatid to study the possible existence of genetic recombination in this group of protozoa. The approach was based on the ability to select a variety of mutants on agar plates. Following mutagenesis of wild type cells by nitrosoguanidine or ethylmethanesulfonate, stable mutant phenotypes were obtained. These included mutants resistant to the drugs actinomycin D, 6-azauracil, 6-azauridine, and 5-fluorouracil, auxotrophs and colony morphology mutants. Following mixed growth of pairs of drug-resistant mutants on selective media, isolates exhibiting stable recombinant phenotypes were obtained. The data presented suggest that 1) Crithidia undergoes some type of genetic recombination and 2) Crithidia must be diploid at some time during this process. PMID- 3857347 TI - When should a dental office consider a computer? PMID- 3857345 TI - Further studies on prostaglandin and thromboxane production by the rat uterus during the oestrous cycle. AB - Prostaglandin (PG) and thromboxane (TX) synthesis by uterine homogenates was measured at 4-h intervals during the 4-day oestrous cycle of rats. Production was in the order of 6-oxo-PGF-1 alpha (which reflects PGI-2 synthesis) greater than PGF-2 alpha greater than TXB-2 (which reflects TXA-2 synthesis) greater than or equal to PGE-2. Peak production occurred at 02:00 h on the day of oestrus, after which production gradually decreased, with some fluctuation on the day of metoestrus, to reach a minimum between 22:00 and 06:00 h on the days of dioestrus and oestrus, respectively. Separation of the uterine tissues showed that, on a unit weight basis, the endometrium had a much higher PG and TX synthesizing ability than did the myometrium, although this was compensated for on a total weight basis by the much greater mass of myometrium. Endometrial PG and TX production was in the order of PGF-2 alpha greater than TXB-2 greater than or equal to 6-oxo-PGD-1 alpha identical to PGE-2, with PGF-2 alpha and TXB-2 productions showing the greatest increases between 10:00 and 02:00 h on the days of pro-oestrus and oestrus, respectively. Myometrial PG and TX production was in the order of 6-oxo-PGF-1 alpha greater than PGF-2 alpha greater than PGE-2 identical to TXB-2, with 6-oxo-PGF-1 alpha and PGF-2 alpha productions showing small increases between 10:00 and 02:00 h on the days of pro-oestrus and oestrus, respectively. Myometrial PGE-2 production decreased between these two times.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3857346 TI - Effect of spatulation on the properties of high-strength dental stones. PMID- 3857348 TI - The ultimate variable. PMID- 3857349 TI - Computers in medicine: potential liability issues. PMID- 3857351 TI - Medical license: cherished possession. PMID- 3857350 TI - Containing health care costs. Jury awards; business and health care. PMID- 3857352 TI - Closed medical staff: legal challenges. PMID- 3857353 TI - Research in the physiology of exercise and sports. PMID- 3857354 TI - Malignant hyperthermia. PMID- 3857355 TI - Rationale for liver resection for metastatic colon carcinoma. PMID- 3857356 TI - Acute gastric volvulus. PMID- 3857357 TI - Carotid ulcer undetected by angiography. PMID- 3857358 TI - [Distribution of cefotiam dihydrochloride to the bloodless lung]. AB - The concentration of cefotiam (CTM) in the serum and the bloodless lung with time is discussed. Five patients who were undergone pneumonectomy or lobectomy, were given 1 g of CTM intravenously during the operation. Blood samples and lung samples were collected 15, 30, 60, 90, 120, and 300 minutes after the administration. The CTM levels in the blood and the lung samples were measured by the agar well bioassay. The CTM levels in the lung samples were modified as the CTM levels in the bloodless lung by calculating the contained blood volume, as lung samples were proven to have a mean value of 34.2% of blood in weight. The serum CTM level was 73.3 micrograms/ml at 15 minutes after injection and then decreased gradually. The CTM level in bloodless lung was elevated during the first 60 minutes, became equal to that of the blood during next 30 minutes and then exceeded the serum levels thereafter. These results indicate that the distribution of CTM to the bloodless lung was excellent and a satisfactory preventative effect against postsurgical infection could be expected. PMID- 3857359 TI - [Postoperative antibiotic prophylaxis for gastric cancer in surgery. Comparative study of 2 and 4 times daily administrations of cefotiam]. AB - Comparative study of prophylaxis with cefotiam (CTM) was carried out in 47 patients undergoing surgery for gastric cancer. The patients were randomized in 2 treatment groups. The first group A received a single intravenous drip dose of 0.5 g CTM, given 4 times daily for 5 days after surgery. The second group B received a single intravenous drip dose of 1 g CTM, given twice daily for 5 days. Postoperative infections occurred in 8.7% (2/23) of the patients receiving CTM in group A, and in group B 8.3% (2/24). The number of infections was similar in both groups of patients. Prophylactic efficacy of CTM has also been evaluated in fever index of A and B groups. Fever index was 16.36 +/- 4.00 degree hours in A group, and in B group 7.91 +/- 2.30 degree hours, respectively. The difference between the 2 groups are statistically significant tendency. A single dose of 1 g CTM, given twice daily for 5 days, provide effective prophylaxis against infections in patients undergoing surgery for gastric cancer. CTM can be recommended for surgical prophylaxis. PMID- 3857360 TI - [Studies on penetration of antibiotics to gallbladder tissue and bile, its surgical significance. Mainly with cefmenoxime]. AB - Basic and clinical studies in 37 patients with biliary tract disease on comparison between cefmenoxime (CMX) and cefotiam (CTM) were studied and the following results were obtained. In vitro antibacterial activities of CMX and CTM against 25 strains (15 organisms) isolated from bile of patients with biliary tract disease were stronger than that of cefazolin (CEZ). In cholecystectomized patients, CMX (2 g) or CTM (2 g) was injected intravenously, followed by determination of concentration in bile and gallbladder tissue about 2 hours after administration. In CMX administration, the mean concentration in gallbladder bile was 812.1 micrograms/ml, and the mean concentration in duct bile was 1,050.6 micrograms/ml, and the mean concentration in gallbladder tissue was 100.7 micrograms/g. In CTM administration, the mean values were, 1,092.5 micrograms/ml, 1,287.8 micrograms/ml, 28.5 micrograms/g, respectively. The concentration of CMX and CTM were almost similarly. The bile concentration of CMX (i.v.) was compared with CTM (i.v.) by cross-over method in cases of T-tube drainage. The peak bile concentrations of CMX and CTM were as high as 172.4 micrograms/ml and 182.2 micrograms/ml, respectively, 1 approximately 2 hours after 2 g intravenous administrations. Furthermore, the concentration of them were highly gained, 16.1 micrograms/ml of CMX and 33.8 micrograms/ml of CTM, even at 5 approximately 6 hours. In choledochostomized patients, CMX (4 g/day) was injected intravenously, followed by determination of concentration in intraperitoneal exudate. The mean concentration of CMX was 15.3 micrograms/ml on the first day after the operation, and 6.0 micrograms/ml even on the third day after the operation. Those results suggest that the high antibacterial activity of CMX against organism in bile and, the high penetration of CMX to bile, gallbladder tissue and intraperitoneal exudate will promise its important role in treatment of biliary tract infections. PMID- 3857361 TI - [Transference of cefmenoxime from serum to lung tissue]. AB - Ten patients who were performed pulmonary resection for the disease of the lung, were administered 2 g of cefmenoxime (CMX) by intravenous injection before their operation. The concentrations of CMX in serum and lung tissue were determined. The CMX concentrations in lung tissue were observed to be higher than the MIC of CMX for Klebsiella pneumoniae, Haemophilus influenzae and Serratia. These results suggested that CMX will be useful agent for the prevention and treatment of pulmonary infection. PMID- 3857362 TI - [A study on transference of cefmenoxime into the cerebrospinal fluid]. AB - Two grams of cefmenoxime (CMX) was administered by one-shot intravenous injection to the patients in normal pressure hydrocephalus without meningitis, and the transference of CMX into the cerebrospinal fluid (CSF) from blood was investigated. After the injection of CMX, CSF and serum were serially taken, and the concentrations of CMX were measured by agar-well method using E. coli. The conclusions drawn from this study are summarized as follows: The concentrations of CMX in CSF were more slowly decreased than those in serum. The mean ratio of transference of CMX into CSF from the serum was 1.4%. After the intravenous injection of 2 g CMX, the mean maximum concentration of CMX in CSF was 0.36 microgram/ml, which exceeded 80% MIC (minimal inhibitory concentration) against several Gram-positive cocci and Gram-negative rods, and higher concentrations than the 80% MIC were kept over 4 hours in CSF. The efficacy of CMX may be kept by its injections less than 4 times a day. PMID- 3857363 TI - [Clinical evaluation of cefmenoxime in chronic complicated urinary tract infection]. AB - The efficacy of cefmenoxime (CMX), which is a third generation, beta-lactamase resistant cephem with a broad antibacterial spectrum, was examined in 43 patients with chronic complicated urinary tract infections. The usual dosage regimen was given 2 approximately 4 g/day of CMX by intravenous drip infusion over 1 hour. The duration of treatment was 5 days. Fifteen patients were cured and 21 improved, and the effective rate was 83.7%. Bacterial eradication rate in these cases was 88.2%, especially eradication of the original pathogens such as Serratia marcescens, Proteus species and Klebsiella species, occurred in high frequency. Laboratory abnormalities were slight elevation of serum GOT and GPT in 2 cases. From these findings, CMX was considered to be very effective in complicated urinary tract infections. PMID- 3857364 TI - [Autoantibody-promoting factor producing hybridoma and suppressive monoclonal anti-Ia antibody (HAK-75)]. PMID- 3857365 TI - [Clinical evaluation of a cancer antigen CA 125 associated with ovarian cancer. II. Serum CA 125 levels in normal pregnancy]. PMID- 3857366 TI - [Histochemical visualization of carbohydrate antigen 19-9 (CA19-9) in pancreas from patients with pancreatic cancer by using a monoclonal antibody]. PMID- 3857367 TI - [Histochemical examination of gastric covering and epithelial mucus in rats (the 2nd report). Effect of several anti-ulcer drugs on aspirin-induced mucosal damage]. PMID- 3857368 TI - A possible role of gonad and renal prostaglandin E2 on the development of hypertension in spontaneously hypertensive rats. AB - A possible role of prostaglandin E2 (PGE2) in the regulation of blood pressure in spontaneously hypertensive rats (SHR) was investigated. The inhibition of PG synthesis by chronic indomethacin treatment accelerated the elevation of blood pressure with the tendency to decrease renal PGE2. We, therefore, confirmed that PGE2 in SHR may play a role in the antihypertensive mechanism. In this connection, the participation of renal PGE2 in the retardation of the development of hypertension in male SHR induced by orchiectomy was examined. Urinary PGE2 which reflects the renal PGE2 level tended to keep a higher level in the castrated group. Urinary electrolytes excretion also inclined to augment in the castrated group throughout the experiment. These results indicate that renal PGE2 may participate in the gonads-mediated blood pressure regulation system, although the mechanism of the retardation of spontaneous hypertension induced by orchiectomy remains obscure. PMID- 3857369 TI - Estrogen and sex hormone-binding globulin levels in nulliparous and parous women. AB - The hormone profiles of nulliparous and parous women on day 11 of their menstrual cycle have been studied in an attempt to seek evidence for the hormonal basis of the protective effect of first birth on breast cancer risk. A previous publication reported that there were significantly lower (26%) early morning prolactin levels in parous women as compared to those levels in nulliparous women but that there were no differences in plasma and urinary estrogen levels. The present study shows, however, that parous women had significantly shorter cycle lengths than nulliparous women of the same age, and the data were reevaluated with this difference being taken into account. After adjustment for cycle length (within the range of 24-32 days) and age, estrogen levels were significantly lower (22%) in parous women compared to those in nulliparous women. Two further aspects of estrogen metabolism were measured in the plasma samples of these women: the binding capacity of sex hormone-binding globulin (SHBG) and the percentage of free estradiol (E2). SHBG levels were 12% higher in parous women, but there was no difference in percentage of free E2. In the previous publication it was suggested that the protective effect of first birth on breast cancer risk was mediated in part by permanently lowering prolactin levels. The current findings suggest that changes in estrogen metabolism also are a factor. PMID- 3857370 TI - Smoking and other risk factors for lung cancer in women. AB - A case-control study among white women in Los Angeles County was conducted to investigate the role of smoking and other factors in the etiology of lung cancer in women. A total of 149 patients with adenocarcinoma (ADC) and 71 patients with squamous cell carcinoma (SCC) of the lung and their age- and sex-matched controls were interviewed. Personal cigarette smoking accounted for almost all of SCC and about half of ADC in this study population. Among nonsmokers, slightly elevated relative risk(s) (RR) for ADC were observed for passive smoke exposure from spouse(s) [RR = 1.2; 95% confidence interval (Cl) = 0.5, 3.3] and at work (RR = 1.3; 95% Cl = 0.5, 3.3). Childhood pneumonia (RR = 2.7; 95% Cl = 1.1, 6.7) and childhood exposure to coal burning (RR = 2.3; 95% Cl = 1.0, 5.5) were additional risk factors for ADC. For both ADC and SCC, increased risks were associated with decreased intake of beta-carotene foods but not for total preformed vitamin A foods and vitamin supplements. PMID- 3857371 TI - Breast cancer prognosis in a mixed Caucasian-Hispanic population. AB - Prognostic factors were compared between 1,249 Caucasian and 360 Hispanic women with breast cancer. A significantly greater proportion of Hispanic women were less than 50 years of age at diagnosis compared to Caucasian women (P less than .0001). Significantly more Hispanic women presented with tumors larger than 3 cm in diameter and with positive axillary lymph nodes than did Caucasian women (P = .004 and P = .0001, respectively). Significantly more Hispanic women were estrogen receptor (ER) negative (P = .005). However, when examined by age groups, the relationships between ethnicity and extent of disease and ER status were observed only among women over 50 years of age. Multivariate analyses demonstrated that there was no difference in survival between Caucasian and Hispanic women once adjustments were made for the number of positive lymph nodes and ER status. Although complete data were not available, it appeared that the incidence of breast cancer is lower in this population of Hispanic women than in Caucasian women. PMID- 3857372 TI - A colon cancer cell line (LIM1215) derived from a patient with inherited nonpolyposis colorectal cancer. AB - A new human colon cancer cell line (LIM1215) has been derived from a tumor arising in a member of a family known to have a high incidence of colorectal cancer. The tumor cell line is comprised of small pleomorphic cells that clone in liquid medium and form tumors in immunosuppressed mice. Ultrastructurally, the cells are capable of differentiation, with cells with multiple microvilli and cells resembling goblet cells being present in the one culture. The cells are pseudodiploid and contain a 13p+ marker chromosome. PMID- 3857373 TI - Truck driving and bladder cancer mortality in rural New England. AB - The relationship between truck driving and bladder cancer mortality was investigated in a case-control study in New Hampshire and Vermont. In-person interviews were conducted with the next-of-kin of 325 bladder cancer cases and 673 controls who died during 1975-79. There were 35 cases and 53 controls who had ever been employed as truck drivers [odds ratio (OR)=1.5, 95% confidence interval (CI)=0.9, 2.6]. There was a statistically significant, but inconsistent, positive association between number of years of truck driving and the OR's, rising to 2.3 (1.2,4.1) for 5 years or more of truck driving. Risk was greatest in men who began driving in the 1930's and 1940's (OR=2.6, 95% CI=1.3,5.1) and among residents of two of the most urbanized counties (OR=3.0, 95% CI=1.2,7.4). The association of bladder cancer with truck driving was unaffected by control for possible confounding factors, such as cigarette smoking and coffee drinking. It was not possible to determine whether the risks associated with truck driving were specifically due to diesel fumes. Truck drivers reporting diesel exposures had an OR=1.8 (95% CI=0.5,7.0), but those without diesel exposure still had an OR=1.5 (95% CI=0.8,2.7). Twenty-six cases and 39 controls reported exposure to diesel emissions in any occupation (OR=1.5, 95% CI=0.8,2.8), and a significant duration-response relationship was seen, rising to threefold for those employed in such jobs for 30-39 years. PMID- 3857374 TI - Risk factors for ocular melanoma: Western Canada Melanoma Study. AB - Between April 1, 1979, and March 31, 1981, 90 individuals in the four western provinces of Canada were diagnosed as having ocular melanomas. Of 87 age-eligible cases (age 20-79 yr), 65 (75%) were interviewed along with age- and sex-matched controls chosen at random from the provincial populations. Individuals with blue eyes had a significantly greater crude risk of ocular melanoma than those with brown eyes [odds ratio (OR)=3.0, P=.04]. Subjects with red or blonde hair were at higher risk of having ocular melanoma than those with black or dark-brown hair (OR=7.7, P=.03). Indoor workers appeared to be at elevated risk for ocular melanoma even after controlling for eye and hair color (OR=3.5, P=.006). PMID- 3857375 TI - Time period compared to birth cohort in Connecticut incidence rates for twenty five malignant neoplasms. AB - Out of necessity and convenience many reports on population-based rates for cancer are limited to analyses by time period of diagnosis, and just how often cohort effects are important in cancer data has not been fully explored. To address this question, Connecticut cancer incidence rates for the years 1940-79 were fitted to the model: Log (incidence rate) = constant + age effect + period effect + birth cohort effect + error term. Data for each cancer site and sex were categorized into 10-year intervals by time period and age group. Significance testing for the curvilinear effects (which are estimable functions) of age (A), period (P), and cohort (C) in the 44 data sets led to no clear choice of model for three data sets; an APC model for 20, an AP model for 7, and an AC model for 14. These choices were corroborated by the RA2 index. Limitations in the interpretation of the results were enumerated. Presentation of population-based cancer rates by implicitly assuming an AP model is valuable (e.g., for studying age distribution in different regions or for age-adjustment in examining international variation or time trends). However, the assumption of an AP model may often be incorrect, as was shown to be the case for most of these 44 data sets. The implications for monitoring trends and generating etiologic hypotheses were discussed in light of the results for cutaneous malignant melanoma and cancers of the cervix, breast, ovary, lung, and bladder. PMID- 3857377 TI - Cancer trends in a population at risk of acquired immunodeficiency syndrome. AB - Recent case reports have suggested that the acquired immunodeficiency syndrome (AIDS) may be associated with cancers other than Kaposi's sarcoma (KS). We have used the population-based registries of the Surveillance, Epidemiology, and End Results (SEER) Program to examine these relationships on a statistical basis by comparing the morbidity odds ratio (OR) and 95% confidence interval (CI) for specific cancer sites in pre- and post-AIDS time periods. Among never-married 20- to 49-year-old men, a surrogate group representing homosexual men, significant increases in the morbidity OR's for KS between 1973-80 and 1981-82 were apparent in the San Francisco standard metropolitan statistical area (OR: 51.8; CI: 18.6 143.6) and in other areas covered by the SEER Program (OR: 18.6; CI: 2.2-154.5). Furthermore, a significant increase was found in the morbidity OR for Burkitt like lymphoma in the San Francisco metropolitan area (OR: 9.1; CI: 1.8-45.6). In San Francisco County (which includes the City of San Francisco), there was a 2,043-fold increase in the morbidity OR for KS and a fivefold increase for Burkitt-like lymphomas, but there were no significant changes for other cancers between 1973-79 and 1982. Similarly, no significant changes in morbidity OR's were observed for other cancers in the remaining SEER registries. These findings provided statistical support for the excess risk of Burkitt-like lymphoma in a group at risk of AIDS. PMID- 3857376 TI - Neuroblastoma: case-control analysis of birth characteristics. AB - The peak incidence of neuroblastoma during early infancy indicates that prenatal factors may play a role in the pathogenesis of this disease. A population-based case-control study was conducted comparing birth certificate data of 157 children who later died from neuroblastoma in Texas with 314 controls randomly selected from all Texas live births. Analysis of birth certificate data revealed a protective relative risk estimate for preterm births (less than 37-wk gestation), with an overall odds ratio of 0.29 (95% confidence limits of 0.10-0.86). This effect was independent of birth weight and ethnic group. A statistically significant odds ratio of 3.22 was detected for term babies whose birth weight was low. The findings suggest that the fetus is susceptible to an in utero oncogenic initiator or promoter during the last 4 weeks of gestation. PMID- 3857378 TI - Mortality from multiple myeloma among North Carolina furniture workers. AB - The risk of multiple myeloma among furniture workers was investigated in a case control study with the use of death certificate statements on occupation in North Carolina counties with heavy employment in furniture-manufacturing industries. From computerized mortality listings, 301 male deaths from multiple myeloma were identified, and 858 controls were selected from deaths due to other causes; controls were matched by sex, race, county of usual residence, age at death, and year of death. Employment in the furniture industry was associated with a nonsignificant excess risk of multiple myeloma [relative risk (RR) = 1.3], particularly among subjects who died before age 65 (RR = 1.7) and among those born before 1905 (RR = 1.5). A significantly elevated risk (RR = 5.4) was seen for furniture workers who were born before 1905 and died prior to age 65. Unexpectedly, farmers were found to have a significantly decreased risk of multiple myeloma (RR = 0.6). The finding of an elevated risk of myeloma in earlier cohorts of furniture workers may be a clue to the nature of the environmental exposure. PMID- 3857379 TI - Occurrence of tumors among litters of BALB/c female mice. AB - In the application of statistical techniques to tumor incidence data it is generally assumed that animals respond independently with regard to tumor occurrence, with littermates being no more alike than are animals from different litters. Data for nine different types of tumors from the large ED01 study conducted at the National Center for Toxicological Research were used to compare tumor prevalence rates among litters with the tumor rates expected under the assumption of homogeneity of tumor rates among litters. These data did not provide sufficient evidence to reject the assumption of homogeneity of tumor prevalence rates among litters of inbred female BALB/c mice for either spontaneously occurring tumors or bladder tumors produced by exposure to 2 acetylaminofluorene (CAS: 53-96-3). However, there does appear to be a difference in liver tumor prevalence rates among litters at 24 months of age. Thus litter effects are a factor that should be considered in the assignment of animals to treatment groups in carcinogenesis studies. PMID- 3857380 TI - Adhesion, chemotaxis, and aggregation of Walker carcinosarcoma cells in response to products of resorbing bone. AB - Cells from the Walker 256 carcinosarcoma, a rat breast tumor with a propensity to metastasize to bone, were labeled with [131I]5-iodo-2'-deoxyuridine and then added to 96-hour organ cultures of fetal Sprague-Dawley rat calvaria that had been prelabeled with 45Ca and incubated with various stimulators or inhibitors of resorption. In conditioned media from resorbing bone cultures, the number of cells that attached to the bone surfaces correlated with the degree of bone resorption (r = 0.65; P less than .005). The attachment response was maximal after 180 minutes of cocultivation and was inhibited by preincubation of the tumor cells with 10(-5) M cytochalasin B. Cellular attachment appeared to be promoted by a trypsin-sensitive factor released into the organ culture medium from resorbing bones. Enhanced tumor cell attachment did not appear to be related to a change in the surface properties of the resorbing bone, since it was not observed when the conditioned media were replaced with fresh medium. Furthermore, tumor cells placed in conditioned medium demonstrated increased attachment to plastic surfaces and formed aggregates. While there was a direct correlation between the ability of conditioned medium to promote cellular adhesion and chemotactic migration (r = 0.85; P less than .05), the factors responsible for chemotaxis and adhesion could be separated by gel filtration. The release of such factors from resorbing bones may promote the formation of secondary bone tumors, since in this system attachment of unlabeled cells was followed by proliferation of tumor cells and evidence of bone invasion. PMID- 3857381 TI - Combination heparin plus cortisone treatment of two transplanted tumors in C3H/He mice. AB - C3H/He inbred mice bearing either C3H mouse mammary or RIF-1 tumors of 180-mm3 volume were treated with a combination of heparin (500 anticoagulation U/ml drinking water) plus cortisone (either 250 mg/kg/day tapering to 37 mg/kg/day or a constant dose of 75 mg/kg/day). Five types of heparin were tested in this study. RIF-1 tumors shrank to approximately half the volume at the start of therapy after only 3 days of treatment; mammary tumors took longer to respond, not reaching half the starting volume until after 11 days of treatment. In both tumors response was transient, the tumors eventually regrowing. However, response to combined heparin and cortisone therapy was in fact no different from the response to cortisone used alone. Also, cortisone treatment was extremely toxic to these animals and experiments had to be terminated after about 3 weeks of therapy. PMID- 3857382 TI - Partial characterization of n-butanol-solubilized rejection-type antigens of syngeneic murine colon tumors. AB - Previous investigation of the transplantation immunity of 2 cultured murine colon lines of BALB/c origin, C-C36 and C-C26, showed these tumor lines to be immunogenic against individual tumors and to have possibly cross-reactive, tumor rejection-type antigens. For characterization of the molecular features of tumor rejection antigens expressed on the colon tumor cells, n-butanol was used for the extraction of rejection-type antigens from tumor cells and immunogenic molecules were analyzed on transplantation immunity. The data demonstrated that extraction of the rejection-type antigens from C-C36 and C-C26 surface membrane without cellular lysis was possible with n-butanol treatment of these cells, and immunogenic activities of these extracts from C-C36 and C-C26 cells were more potent than those of nonionic detergent Nonidet P40 extracts in the tumor rejection assays. The extracts were partially characterized by chromatographic separation on Sephadex G-200 gel filtration and lectin-affinity chromatography. It was suggested that the C-C36 antigens responsible for tumor-rejection activity against the same tumor cells had a molecular weight range of approximately 150,000 to 250,000 (fraction II) in the presence of 5 mM EDTA and had been eluted into unbound fractions to lens culinaris lectin on affinity chromatography. Moreover, immunization of mice with antigens from the same fractions (fraction II) of n-butanol extracts of C-C26 tumor on the gel filtration could induce the resistance against challenged C-C36 as well as against challenged C-C26 tumor growth. These results may indicate that solubilized tumor-rejection-type antigens found in C-C36 and C-C26 colon tumors have a size similar to that of the molecules and that cross-reacting, rejection-type antigens between these cells are the products of the same gene clusters or somatic derivatives of a single gene. PMID- 3857383 TI - Infectivity of Friend murine leukemia virus for hamster cells. AB - Hamster-adapted Friend murine leukemia virus (F-MuLV) infected hamster cells and produced an XC-positive progeny. However, the sensitivity of hamster-adapted F MuLV's to hamster cells was about 100 times lower than that to mouse cells. Hamster cells chronically infected with F-MuLV in vitro produced progeny virus in titers comparable to those in similarly infected mouse cells. Xenotropic and amphotropic murine leukemia virus can infect hamster cells when phenotypically mixed with the F-MuLV. Murine sarcoma virus pseudotyped with the F-MuLV easily induced sarcomas in hamsters and transformed hamster cells in vitro. PMID- 3857384 TI - Tumor induction in Praomys (Mastomys) natalensis by N,N'-2,7 fluorenylenebisacetamide. AB - Feeding N,N'-2,7-fluorenylenebisacetamide (CAS:304-28-9) at 0.025% to 15 male and 15 female mastomys considerably shortened their life-span. At death every treated mastomys had several primary tumors; untreated animals at comparable ages had none. Several mastomys with hepatoblastomas and 1 with giant cell hepatitis and a metastasizing pancreatic carcinoma are first reported here. The tumor load per animal averaged 4.0 for treated females, 2.6 for treated males, 1.5 for untreated females, and 0.6 for untreated males. Of 24 hepatic tumors in treated mastomys, 11 metastasized, compared to none of the incipient tumors in 8 of 26 untreated animals. Pancreatic adenomas developed in 27 treated and 1 untreated mastomys, and a metastasizing adenocarcinoma developed in 1 treated animal. All treated females, 3 treated males, and 1 untreated female developed multiple villous adenomas in the small intestine. One untreated female and 8 treated females developed mammary cancers, 4 of which metastasized. Primary tumors of other sites occurred infrequently. PMID- 3857385 TI - Comparative carcinogenesis by hydroxylated nitrosopropylamines in Syrian hamsters. AB - The relationship between the chemical structure of nitrosamines and their carcinogenic activity has been examined in Syrian golden hamsters in parallel with similar studies in rats to aid in explaining the sharp interspecies differences in response to these compounds. The relationship between the beta oxidized N-propyl-nitrosamine structure and the induction of tumors of the pancreatic duct in Syrian golden hamsters was investigated by administration of a number of asymmetric acyclic nitrosamines containing that structure to female hamsters for 29-50 weeks. N-Nitroso-2-oxopropyl-2-hydroxyethylamine (OPE), N nitroso-2-hydroxypropyl-2-hydroxyethylamine (NIEA), and N-nitroso-2,3 dihydroxypropyl-2-oxopropylamine (DHPOP) induced pancreatic tumors. OPE also induced a high incidence of liver neoplasms, and a number of animals given NIEA and N-nitrosoallyl-2-oxopropylamine (NAOP) also had liver neoplasms. N-Nitroso 2,3-dihydroxypropyl-2-hydroxyethylamine was very weakly carcinogenic. N-Nitroso 2,3-dihydroxypropyl-2-hydroxypropylamine and DHPOP induced a high incidence of neoplasms of the forestomach (mainly papillomas). N-Nitrosoallyl-2,3 dihydroxypropylamine, N-nitrosoallyl-2-hydroxypropylamine, and NAOP induced primarily neoplasms of the nasal mucosa but no neoplasms of the pancreatic ducts in hamsters. PMID- 3857386 TI - Chemoprevention of N-nitroso-N-methylurea-induced mammary cancers by pretreatment with 17 beta-estradiol and progesterone. AB - Because hormones of pregnancy are thought to alter the mammary gland such that the epithelial cells are less susceptible to future carcinogenic insults, the present study was conducted to determine the ability of short-term treatment with 17 beta-estradiol and/or progesterone, administered immediately after puberty, to prevent mammary cancers in rats subsequently exposed to N-nitroso-N-methylurea [(NMU) CAS:684-93-5]. Beginning at 40 days of age, female outbred Sprague-Dawley rats received 20 micrograms 17 beta-estradiol and/or 4 mg progesterone for 5 weeks. NMU (50 mg/kg body wt) was administered at 96 and 103 days of age (3 and 4 wk, respectively, after the last hormone injection). Pretreatment of rats with 17 beta-estradiol plus progesterone was highly effective in preventing mammary cancer induction (88% fewer cancers compared to the cancer incidence in rats pretreated with the hormone vehicle). Wholemounts of the mammary glands of rats treated with 17 beta-estradiol plus progesterone revealed that the gland was stimulated to a highly differentiated state (similar to that observed in late pregnancy). At the time of NMU treatment, the gland had involuted but was quite different from controls; i.e. an absence of terminal end buds and terminal ducts was noted. The short-term treatment with hormones did not induce tumors and did not interfere with subsequent reproductive and lactational performance. It is apparent that stimulation of the mammary gland to a highly differentiated state early in life can provide protection against future carcinogen exposure. PMID- 3857389 TI - Quantitative risk assessment: report of the Subcommittee on Environmental Carcinogenesis, National Cancer Advisory Board. PMID- 3857388 TI - Polyamines as mediators of the effect of prolactin and growth hormone on the growth of N-nitroso-N-methylurea-induced rat mammary tumor cultured in vitro in soft agar. AB - This study evaluated the role of polyamines in mediating the effect of ovine prolactin (oPRL) and ovine growth hormone (oGH) on the growth of the N-nitroso-N methylurea [(NMU) CAS:684-93-5]-induced rat (Sprague-Dawley) mammary cancer cultured in soft agar. oPRL and oGH had a dose-related growth-promoting effect when added to NMU-induced mammary tumors cultured in soft agar in the absence of serum. The effect of oPRL and oGH was blocked by alpha-difluoromethylornithine (DFMO), a suicide inhibitor of ornithine decarboxylase, the rate-limiting enzyme of polyamine biosynthesis. Exogenous administration of polyamines reversed the inhibitory effect of DFMO and completely restored the action of oPRL and oGH. Our results indicated that polyamines are essential in mediating the growth of the NMU-induced mammary tumor under these experimental conditions. PMID- 3857387 TI - Two cases of lymphosarcoma in channel catfish exposed to N-methyl-N'-nitro-N nitrosoguanidine. AB - Of 158 channel catfish (Ictalurus punctatus) exposed to N-methyl-N'-nitro-N nitrosoguanidine [(MNNG) CAS:70-25-7] in water for 28 days, 2 developed disseminated lymphosarcoma. One fish was necropsied at 12 months and another at 18 months following exposure. Both fish had a massive neoplastic infiltration of the bilateral pairs of head and trunk kidneys from which the neoplastic cells appeared to originate. The neoplastic infiltration was also observed in the following: thymus, gills, oral mucosa, liver, skin, skeletal muscle of head-neck region, and to a lesser extent spleen and bone marrow. This is probably the first report of lymphosarcoma in channel catfish. Although the occurrence of lymphosarcoma in these 2 catfish appeared to be related to exposure to MNNG, the exact role MNNG played in the tumor formation was not determined. PMID- 3857390 TI - [Effect of jejunoileoshunting on hyperlipoproteinemia in patients with pathologic obesity]. PMID- 3857391 TI - [Nutrition problems in cancer patients. When the joy of eating is lacking]. PMID- 3857392 TI - [Roulette with inheritance]. PMID- 3857393 TI - The assessment of bulimia in high school students. AB - This study attempted to: estimate the prevalence of bulimia among a sample of high school students; identify demographic variables associated with the disorder; and identify possible personality variables associated with bulimia. Based on the DSM-III criteria for bulimia, each of 257 students who participated in the study was assigned to one of three groups; 12 students (4.7%) were identified as bulimic, 88 (34.2%) as binge eaters, and 157 (61.1%) as normal eaters. Gender was the only demographic variable significantly associated with group, and all 12 of the bulimic students were female (7.1% of the female students). Personality differences were assessed with the California Psychological Inventory (CPI). On two of the scales, female students identified as bulimic and binge eaters scored significantly lower than students identified as normal eaters, indicating poorer adjustment. In males, none of the scales discriminated between the binge eater and normal eater groups. Results are discussed in the context of mental health needs among adolescents and high school students. PMID- 3857394 TI - Extraction of 11 beta-hydroxysteroid dehydrogenase from rat liver microsomes by detergents. AB - In these studies our goal was to solubilize the microsomal enzyme, 11 beta hydroxysteroid dehydrogenase (11-HSD) as the first step in its purification. Enzyme was extracted from rat liver microsomes with representative detergents (Zwittergents, Tritons, modified sterols). Oxidation-reduction (O-R) ratios of extracts varied with detergent used and ranged from 0.18 (CHAPS) to 3.8 (Zwittergent 3-14) relative to a ratio of 1.7 in intact microsomes. All detergents solubilized 11-HSD using lack of sedimentation during high speed centrifugation as criterion. With Triton DF-18 and Triton X-100, optimum extraction of 11-HSD occurred in the detergent-protein ratio range of 0.1 to 0.2 O-R ratios decreased with increased Triton X-100, but were constant as Triton DF 18 was varied. The pH optimum of enzyme extraction was 9 at a detergent-protein ratio of 0.05 and 7.5-8.0 at a ratio of 0.2. Sodium chloride increased enzyme extraction by detergents; in the absence of detergent, salt extracted protein, but not enzyme. In aqueous solution at 0 degrees C or -15 degrees C, microsomal 11-oxidation activity rose within 24 h, then decreased; reductase activity consistently decreased. Oxidation and reduction activities were inversely related in the microsomal bound enzyme. No relationship between these activities appeared in detergent-solubilized enzymes. Possible mechanisms to account for the unexpected behavior of this enzyme are discussed. PMID- 3857395 TI - Acute leukaemia following malignant ependymoma: a case report. AB - Though an increasing number of chemotherapy- and radiotherapy-related leukaemias are being reported, acute promyelocytic leukaemia developing as a therapy-related second malignancy is still uncommon. Here we report a case of acute promyelocytic leukemia, microgranular variant, developing in a case of intracranial malignant ependymoma, 1.5 years following treatment with craniospinal radiotherapy. PMID- 3857396 TI - A clinical evaluation of carbohydrate antigen 19-9 and carcinoembryonic antigen in patients with pancreatic carcinoma. AB - We have studied serum carbohydrate antigen 19-9 (CA 19-9) and carcinoembryonic antigen (CEA) in 221 persons to assess their usefulness in the diagnosis of pancreatic carcinoma. Although serum CA 19-9 and CEA in all healthy controls were within normal limits, the positive ratings of serum CA 19-9 and CEA in all benign disease were 9.8% and 18.1%, respectively. Sensitivity of serum CA 19-9 for pancreatic carcinoma was 70.5%, which was higher than that found in healthy controls, benign disease, and other malignant disease except biliary carcinoma; but sensitivity of serum CEA levels (67.7%) was not different from that seen in malignant disease. Three of 34 patients (8.8%) with pancreatic carcinoma who had a above-normal levels of serum CA 19-9 but not serum CEA were resectable. Although there was no correlation between serum CA 19-9 and CEA, advanced stages of pancreatic, gastric, and colorectal carcinoma tend to show high serum CA 19-9 and CEA, but no statistical differences were observed in relation to the stages of these carcinomas. Comparative studies of serum CA 19-9 and CEA for sensitivity and the predictive value of true positive and negative results for detecting pancreatic, gastric, and colorectal carcinoma showed that serum CA 19-9 has significantly higher sensitivity and predictive value of true positive results for pancreatic carcinoma than for gastric and colorectal carcinoma (P less than 0.05). However, serum CEA measurements did not show any difference between these carcinomas, and the highest predictive value of a true negative result for excluding pancreatic carcinoma was also observed in serum CA 19-9. These results indicate that although the CA 19-9 assay is not specific for pancreatic carcinoma, it is more useful adjunct method for diagnosing pancreatic carcinoma, possibly in resectable stages. PMID- 3857398 TI - 14th annual UCLA symposia. April 6-26, 1985. Abstracts. PMID- 3857397 TI - 14th annual UCLA symposium. Abstracts: Biochemical and molecular epidemiology of cancer. PMID- 3857399 TI - 14th annual UCLA symposium. Abstracts: Molecular genetics of filamentous fungi. PMID- 3857400 TI - 14th annual UCLA symposium. Abstracts: Plant genetics. PMID- 3857401 TI - 14th annual UCLA symposium. Abstracts: Options for the control of influenza. PMID- 3857402 TI - A novel monoclonal antibody BI-3C5 recognises myeloblasts and non-B non-T lymphoblasts in acute leukaemias and CGL blast crises, and reacts with immature cells in normal bone marrow. AB - A MCA raised against the human acute myelogenous leukaemia cell line KG1 reacted with only KG1 among 26 haematopoietic cell lines covering the major lineages. It reacted with early myeloid (M1/2), 1 of 2 acute myelomonocytic (M4) and most non B non-T leukaemias, including blast crises of CGL. Among M1-AML cells, both MPO+ and MPO- blasts were BI-3C5+. Blasts in 3 Tdt+ M1-AMLs were simultaneously BI 3C5+. BI-3C5 reacted with 4% cells in normal BM, many of which were histologically recognisable as myeloid precursors. 8-15% of BI-3C5+ cells in BM were simultaneously Tdt+, and all were weakly Ia antigen+. BI-3C5 was unreactive with all peripheral leucocytes, with M3 and M5 AMLs, with lymphoid and myeloid leukaemias of "mature" phenotype (T-ALL, B-ALL, CLL, CGL) and with non haematopoietic cell lines. BI-3C5 precipitated a 120K moiety from 125I-labelled KG1 membranes. It was not blocked by J5 anti-cALLA. The potential use of BI-3C5 in the classification of acute leukaemias is discussed. PMID- 3857403 TI - Antigens differentially expressed on surface and cytoplasmic structures of human myeloid cells. AB - Specialized internal granules are a major feature of myeloid differentiation and are deficient in most acute myeloid leukemia cells. Although they arise from the same synthetic apparatus as does the plasma membrane, their relationship to it is not well characterized in human tissues. Using murine monoclonal antibodies, we have identified myeloid-related structures that illustrate three possible modes of antigen expression in these organelles. Immunocytochemical studies with the light microscope have shown that the first (D51) was restricted to the surface of neutrophils, monocytes, megakaryocytes and platelets; a second (D46) was found on the surface of blastic cell lines but on only internal components of mature granulocytes; the third (H36/71) appeared on both the surface and internal particles of promyelocytes, myelocytes and polymorphs. These model antigens may be used to study the control of granule synthesis in normal and leukemic cells. PMID- 3857404 TI - NHL-30.5: a monoclonal antibody reactive with an acute myeloid leukemia (AML) associated antigen. AB - The reactivity of a murine IgG1 monoclonal antibody, NHL-30.5, that detects a surface antigen expressed on acute myeloid leukemia (AML) cells has been studied. Initially raised against the HL-60 cell line, NHL-30.5 has subsequently reacted with blood and/or bone marrow cells from 15 of 19 AML patients studied at presentation or in relapse, 1 patient with chronic myelomonocytic leukemia (CMML), 1 patient with myelofibrosis (MF) who subsequently developed AML, and 1 of 5 patients with acute lymphoblastic leukemia (ALL). It has shown no detectable binding to cells from AML patients in remission (0/3), patients with chronic myelogenous leukemia in chronic phase (CML) (0/7), normal bone marrow (0/9), normal peripheral blood mononuclear cells, granulocytes, platelets, erythrocytes, monocytes, or splenocytes by radioimmunoassay or fluorescence analysis using flow cytometry. HL-60 cells induced to differentiate following incubation in the presence of dimethylsulfoxide (DMSO) lost their ability to bind NHL-30.5. Immunoprecipitation of iodinated HL-60 cell surface components showed the antigen to have an apparent mol./wt of 180,000 under reducing conditions. These results suggest that the antigen is different from any other myeloid antigens reported to date, and may be useful in further studies of leukemic cell phenotypes. PMID- 3857405 TI - Immunomodulation of NK and ADCC by Corynebacterium parvum in acute myeloid leukaemia patients. AB - Natural killer (NK)- and antibody dependent cellular cytotoxicity assays were performed using cryopreserved effector cells in AML patients receiving i.c. and s.c. injections of Corynebacterium parvum. A dose related increase in NK could be demonstrated with peaks in NK at day 1 with full Cp dosage and at day 14 with 50% doses. This increase was attributable to the Cp vaccine since normal donors receiving tetanus toxoid or pneumococcal polysaccharide and AML patients randomized not to receive Cp did not show similar NK boosting. The increase was probably due to interferon induction in vivo and could be demonstrated with purified T- and non-T-lymphocyte subsets. However, longitudinal measurements showed that the ability of Cp to boost NK was gradually lost over 4-6 months. ADCC studies showed that while lymphocyte-ADCC was not consistently affected by Cp, monocyte-ADCC was enhanced with maximal cytotoxicity at day 14. PMID- 3857406 TI - Control of cell differentiation during proliferation. II. Myeloid differentiation and cell cycle arrest of HL-60 promyelocytes preceded by nuclear structural changes. AB - The time-dependent dynamics of nuclear structure, cell cycle transit and arrest, and cellular differentiation were studied using the human promyelocytic leukemia cell line HL-60. Myeloid differentiation of HL-60 cells was induced by 10(-6) M beta, all trans, retinoic acid (RA). During exponential growth the cells had G1, S, G2 and M durations of 9, 11, 0.5 and 0.5 h respectively. Significant growth arrest in the G1/0 phase of the cell cycle was apparent after 48 h of RA exposure or after two division cycles. Thereafter, cells arrested in G1/0 with wide dispersion in times of arrest which extended over several cell cycle generation times. The kinetics of phenotypic differentiation, detected by phorbol myristate acetate inducible superoxide production, paralleled those of G1/0 growth arrest with similar lag and dispersion. These kinetics are consistent with a model hypothesizing the existence of an S-phase differentiation control (DC) point regulating both terminal proliferation and differentiation. Before any cell differentiation or termination of cell proliferation occurred, the nuclei of RA treated cells underwent a structural change detected by narrow-angle light scatter measured with flow cytometry. Narrow-angle light scatter was transiently reduced, reaching a nadir at 24-48 h and returning to control values at 96 h. This change was independent of cell cycle phase or total nuclear protein content. It was associated with a morphological change of the nuclear membrane from a smooth to dimpled or pitted structure. These findings focus attention on the potential significance of nuclear structural reorganization as an early event during cell differentiation. PMID- 3857407 TI - Study of differentiation of fresh myelogenous leukemic cells by compounds that induce a human promyelocytic leukemic line (HL-60) to differentiate. AB - The human promyelocytic leukemia cell line known as HL-60 can be triggered to mature to functional granulocytes and/or macrophages after exposure to a variety of compounds. The findings have generated enthusiasm for possible therapy of leukemia using compounds that induce leukemic cell differentiation. We investigated whether five compounds known to trigger HL-60 differentiation to granulocytes could trigger the maturation of blast cells from 12 patients with myelogenous leukemia. Maturation was judged by morphology, superoxide production, phagocytosis, expression of Fc receptors, and development of alpha-napthyl acetate esterase activity. The blast cells from most patients showed little morphological, histological or functional maturation after exposure to the various compounds as compared to the blast cells cultured without the compounds. Actinomycin was able to induce significant maturation of leukemic cells of some patients when maturation was analyzed by several statistical methods. Our study suggests that many compounds which trigger differentiation of promyelocytic leukemia cells may not trigger differentiation of less mature myeloid leukemic cells. PMID- 3857408 TI - Identification of a membrane glycoprotein associated with haemopoietic progenitor cells. AB - A monoclonal antibody (3C5) is described which selectively binds to progenitor cell populations in human bone marrow and foetal liver. Mature, lymphoid (T,B) colony forming cells do not express the antigen. The antibody identifies a cell surface glycoprotein of mol. wt approximately 100,000 which might have an important regulatory role in early haemopoietic differentiation. PMID- 3857409 TI - Variation in myc gene amplification and expression in sublines of HL60 cells. AB - Three sublines of the human promyelocytic leukaemia cell line HL60 have been isolated. Histochemical, karyotypic and immunological analyses have confirmed the identity of the three sublines as HL60. However, the extent to which c-myc homologous DNA sequences are amplified in the genomes of these cells varies from 4- to 30-fold. Moreover, the relative abundance of c-myc-related RNA sequences in uninduced cells of each subline is directly proportional to the gene copy number. It is concluded that, while high levels of the c-myc gene and its transcripts may have had a role in the establishment of HL60 cells, these are not required for maintenance of the HL60 phenotype. However we cannot rule out the possibility that a low level of amplification and enhancement of transcription has a role in maintenance of this phenotype. PMID- 3857411 TI - Monocytic differentiation induced by 1,25 dihydroxyvitamin D3 in myeloid cells: an ultrastructural immunocytochemical study. AB - We have studied, by ultrastructural morphology and immunocytochemistry, the alterations that occur in cells from the HL60 leukaemia cell line and from patients with CGL following incubation in vitro with 1,25(OH)2D3 for 2-5 days. The main morphological changes observed were in the nuclear shape, the development of autophagic vacuoles and the appearance of a population of small granules in the cytoplasm. These changes were associated with a significant reduction in MPO activity and increased expression of membrane antigens detected by the monocyte-specific McAb FMC17 and FMC32, as shown by the IGM at EM level, and a decrease in granulocyte-specific antigens demonstrated by the McAb FMC10. These observations suggest that promyelocytes and myelocytes could transform into monocyte-like cells and that this remodelling of cells was associated with autophagic digestion of cellular structures. PMID- 3857410 TI - Screening for induction of differentiation and toxicity to blast cells by chemotherapeutic compounds in human myeloid leukemia. AB - Bone marrow cells from 9 patients with acute myeloid leukemia and 1 patient with a blast crisis of chronic myeloid leukemia were cultured to determine their ability to be induced to differentiate by different chemotherapeutic compounds. Five of these 10 patients showed differentiation to granulocytic and/or monocytic cells by culture with medium containing the myeloid cell differentiation-inducing protein MGI-2. Actinomycin D induced differentiation in cells from 2 of the patients who did not show differentiation with MGI-2 containing medium. In these 7 patients there was an increase in the ratio of differentiated myeloid cells to blasts. None of these 10 patients showed induction of differentiation by cytosine arabinoside, adriamycin, or daunomycin, but treatment with these compounds showed in some patients an increase in the ratio of differentiated myeloid cells to blasts. The results indicate that this ratio can be increased by differentiation and also in some patients by toxicity to blast cells. With dexamethasone or vinblastine there was no induction of differentiation and no increase in this ratio in any of the 10 patients tested. After in vivo chemotherapy with low dose cytosine arabinoside, cells from one patient showed a similar response in culture to actinomycin D as cells before chemotherapy, whereas in another patient the cells had acquired the ability to respond to actinomycin D. In contrast, after high-dose in vivo chemotherapy with cytosine arabinoside and daunomycin, cells from a third patient seemed to have lost the ability to differentiate in vitro by MGI-2 containing medium or actinomycin D. The results indicate that pre-screening for differentiation-inducing compounds and compounds that show toxicity to blast cells should be useful to select the appropriate compounds to be used for therapy, and that it is advisable to screen the cells both before and after initiation of therapy. PMID- 3857412 TI - Cytogenetics of acute promyelocytic leukaemia: incidence of t(15;17) at the Royal Marsden Hospital, London. AB - This is the first report from a laboratory in the U.K. of the incidence of t(15;17) in acute promyelocytic leukaemia. One of the cases has a variant translocation, t(15;17)(q22;q25). A t(15;17) translocation was present in all cases considered to be adequately studied. PMID- 3857413 TI - Cytogenetic studies on acute myelomonocytic leukaemia (M4) with eosinophilia. AB - Cytological and cytogenetic studies on 17 acute myelomonocytic leukemia with bone marrow eosinophilia (M4EO) are reported. Cytological criteria include an unusual high proportion of eosinophilic cells containing abnormal granules. Abnormal karyotypes have been found in 12 patients but chromosome 16 abnormalities were present in only 9. In two of them only one such mitosis was detected whereas in 7 others inv(16)(p13q22) and/or del (16)(q22) clones were present. However in 16 cases normal karyotypes were also present. Other abnormal clones coexisted in three patients, suggesting that chromosome 16 abnormalities are not linked to a primary leukemogenic event. M4EO was found to be associated with a favourable prognosis. PMID- 3857414 TI - [Calcium and active-type vitamin D]. PMID- 3857415 TI - [Somatoform diseases in clinical dentistry]. PMID- 3857416 TI - [Management of pain in head and neck neoplasms]. PMID- 3857418 TI - [Use of personal computers in dental clinics]. PMID- 3857417 TI - [Crown down pressureless technic in root canal therapy]. PMID- 3857420 TI - LMT poll: dentists tell how they choose their laboratories. PMID- 3857419 TI - [Shock of a patient facing amputation and the support offered by the nursing staff]. PMID- 3857421 TI - How to develop new customers through direct mail. PMID- 3857422 TI - The future of technology. PMID- 3857424 TI - [Serum CA 1,25 in patients with non-ovarian tumors. Evidence of a relation between the increase of the antigen and hepatic disease]. PMID- 3857423 TI - [Chronic myelomonocytic leukemia. Analysis of 21 cases]. PMID- 3857425 TI - Parotid hypertrophy with bulimia: a report of surgical management. AB - Benign hypertrophy of the salivary glands can occur in patients with anorexia nervosa. This enlargement has been related to nutritional deficiencies and bulimia, which is a form of episodic binge eating followed by vomiting. The surgical management of a patient with bulimia and benign bilateral parotid enlargement secondary to bulimia will be discussed. Superficial parotidectomy may be a useful adjunct in managing the cosmetic and psychological aspects of patients with anorexia nervosa and bulimia complicated by massive parotid hypertrophy intractable to medical management. PMID- 3857426 TI - Oral implantology: specialty status. PMID- 3857427 TI - Use of advanced dental implant procedures for complete dentistry on a TMJ patient. PMID- 3857428 TI - Preparation of isolated Leydig cells. PMID- 3857429 TI - Sons and daughters--a sex preselection study. AB - A study designed to check the feasibility of a modified Shettles' sex selection technique was carried out in 73 women over four years. The results did not show a statistically significant difference from the sex ratios which resulted from uncontrolled intercourse. PMID- 3857430 TI - Successful treatment of pulmonary and abdominal metastatic osteosarcoma. AB - A patient with telangiectatic osteosarcoma of the proximal fibula while receiving adjuvant chemotherapy, developed pulmonary and, later, mesenteric metastases. The pulmonary metastases were resected and the mesenteric metastasis was eradicated with surgery and intra-arterial cis-diamminedichloroplatinum II. This represents an additional example of an alteration in the clinical pattern of metastases induced by chemotherapy and the ability to achieve cure with a multidisciplinary approach. PMID- 3857432 TI - [Reconstructive meniscoplasty of the temporomandibular joint]. PMID- 3857431 TI - Osteogenic sarcoma. PMID- 3857433 TI - [Composite fillings. New dental adhesives]. PMID- 3857434 TI - [In vitro toxicity of dental materials used in restorative and prosthetic dentistry. III. Gold and its alloys]. PMID- 3857435 TI - [Clinical evaluation of the analgesic efficacy of nefopam in dental outpatient practice]. PMID- 3857436 TI - [Anaerobic flora of a periodontal abscess]. PMID- 3857437 TI - [Dehiscences and fenestrations. Incidence and distribution]. PMID- 3857438 TI - [A simplified method for orthodontic and orthopedic distal tooth movement in the upper arch]. PMID- 3857439 TI - [Laser radiation in medical therapy. With special reference to dentistry]. PMID- 3857440 TI - [Lesions of the hypoglossal nerve: diagnosis and therapy. Rehabilitation in a case of bilateral posttraumatic paralysis performed by a microsurgical technic]. PMID- 3857441 TI - [Autogenous transplantation of the canine. Clinical evaluation a decade later]. PMID- 3857442 TI - [Treatment of mandibular fractures by osteosynthesis]. PMID- 3857443 TI - [Diagnosis in endodontics]. PMID- 3857444 TI - [Pain control in endodontics]. PMID- 3857445 TI - [An endodontic technic from the School of Dentistry in Pavia]. PMID- 3857446 TI - [Periapical surgery]. PMID- 3857447 TI - [Anesthesiological and resuscitation problems in the corrective surgery of jaw malformations]. PMID- 3857448 TI - [The facial arch from 2 points of reference: anatomical and radiographic, via the anatomofunctional stomatognathic analyzer]. PMID- 3857449 TI - [Assessment of the transmission of prosthetic loads by reflexion photoelasticity]. PMID- 3857450 TI - [Administration and management of the dental office]. PMID- 3857451 TI - [SEM observations on reabsorption areas of human cement in normal and pathological conditions]. PMID- 3857452 TI - [Ultramicroscopic aspects of the dental pulp of rodents (Sciurus m.)]. PMID- 3857453 TI - [Changes in the salivary pH of diabetics. A clinico-statistical comparison with a normal population]. PMID- 3857454 TI - [Clinico-statistical research on toothlessness in a sample of geriatric patients]. PMID- 3857455 TI - [Mirror cheilognathoschisis in thoracoabdominopagus twins: an unusual malformation picture]. PMID- 3857456 TI - [Macroglossia in a nursing infant with Beckwith-Wiedemann syndrome. Description of a case]. PMID- 3857457 TI - [Acupuncture and hypnosis as alternative anesthesias in dentistry]. PMID- 3857458 TI - [Inherent problems in osteoradionecrosis of the jaws]. PMID- 3857459 TI - Systemic fluoride supplements. Every patient who can benefit needs the proper dose. PMID- 3857460 TI - Family of human alpha-interferon-like sequences. AB - An interferon-alpha-like sequence was isolated from a human genomic library by hybridization with a 15-base oligonucleotide. The sequence also showed homology to alpha-interferon and was most closely related to the leukocyte interferon-M gene fragment. The original isolate cross-hybridized to a family of sequences, 10 of which were isolated as clones. Some of these sequences were located within a few kilobases of alpha-interferon genes, consistent with our assignment of several members of the family to human chromosome 9 which also has the beta 1- and alpha-interferon genes. PMID- 3857461 TI - c-abl Oncogene and chromosome 22 "bcr" juxtaposition in chronic myelogenous leukemia. PMID- 3857462 TI - Myopathy in McArdle's syndrome. PMID- 3857463 TI - New route to antibiotic creation. PMID- 3857464 TI - Production of 'hybrid' antibiotics by genetic engineering. AB - The recent development of molecular cloning systems in Streptomyces has made possible the isolation of biosynthetic genes for some of the many antibiotics produced by members of this important genus of bacteria. Such clones can now be used to test the idea that novel antibiotics could arise through the transfer of biosynthetic genes between streptomycetes producing different antibiotics. The likelihood of a 'hybrid' compound being produced must depend on the substrate specificities of the biosynthetic enzymes, about which little is known. In attempts to demonstrate hybrid antibiotic production, we therefore began with strains producing different members of the same chemical class of compounds in order to maximize the chance of success. Here we report the production of novel compounds by gene transfer between strains producing the isochromanequinone antibiotics actinorhodin, granaticin and medermycin. These experiments were made possible by the recent cloning of the whole set of genes for the biosynthetic pathway of actinorhodin from Streptomyces coelicolor A3(2) (ref. 8). We believe that this represents the first report of the production of hybrid antibiotics by genetic engineering. PMID- 3857465 TI - Growth factors. Neuropeptides as mitogens. PMID- 3857466 TI - Caudal ventrolateral medulla. A region responsible for the mediation of vasopressin-induced pressor responses. AB - We localized glutamate-sensitive sites in the ventrolateral medulla of the rat with the spinal cord cut at C. When unilaterally injected into a circumscribed region of the caudal ventrolateral medulla, L-glutamate (30-300 ng) elicited a dose-dependent increase in arterial pressure. The pressor response was accounted for by an increased release of vasopressin because it was abolished by the intravenous injection of a vasopressin antagonist. Bilateral microinjections of kainic acid (50 ng) into the ventrolateral glutamate-sensitive area markedly reduced a vasopressin-induced pressor response to kainic acid (30 ng), injected bilaterally into the nucleus tractus solitarii. It is concluded that the glutamate-sensitive neurons in the caudal ventrolateral medulla are involved in mediation of the vasopressin-induced pressor response arising from the nucleus tractus solitarii. PMID- 3857467 TI - Balloons on the CCU. PMID- 3857469 TI - Screening for congenital hypothyroidism in North Carolina--1979-1984. PMID- 3857468 TI - When Crohn's disease is not Crohn's disease. PMID- 3857470 TI - The bedside evaluation of orthostatic hypotension. PMID- 3857471 TI - Taljaribu kila dawa isifal: yohimbine intoxication. PMID- 3857472 TI - Coalition on sexually transmitted diseases. PMID- 3857473 TI - The diagnosis of viral pneumonitis in a compromised host: is an aggressive approach warranted? PMID- 3857474 TI - Changes in plasma lipoproteins due to alcohol consumption. PMID- 3857475 TI - Chlorpromazine in experimental gastric ulcers induced by restraint and cold stress. PMID- 3857476 TI - A pelvic mass with periosteal reaction. PMID- 3857477 TI - Hodgkin's disease in half-siblings. PMID- 3857478 TI - Adult-onset Still's disease and inflammatory orbital pseudotumor. PMID- 3857480 TI - Adult-onset Still's disease. PMID- 3857479 TI - Hodgkin's disease in siblings. PMID- 3857481 TI - Recurrent malignant melanoma following a 46-year disease-free interval. PMID- 3857482 TI - Solitary nonparasitic liver cysts. PMID- 3857483 TI - Candida tropicalis papillary necrosis treated with ketoconazole. PMID- 3857485 TI - Legal and administrative barriers to health care. PMID- 3857484 TI - Racial equality in the American health care system: an unfulfilled ideal. PMID- 3857486 TI - Maternal and child health care: a deepening crisis. PMID- 3857487 TI - A comparison of selected health indicators for black and white children in New York State. PMID- 3857488 TI - The restraint of progress. Declining participation of blacks and other minorities in medical schools. PMID- 3857489 TI - Black-Jewish relationships. Access to health services and health careers. PMID- 3857490 TI - Minorities and New York medical schools. Past failures and the prospect for future successes. PMID- 3857491 TI - Black doctors on television. PMID- 3857492 TI - The status of Asian Americans in the health care delivery system in New York. PMID- 3857493 TI - Gastrointestinal malignancies in black Americans. PMID- 3857494 TI - Hypertension in blacks. Is it a different disease? PMID- 3857495 TI - Sarcoidosis: focus on the black patient. PMID- 3857496 TI - Coronary heart disease in black Americans. PMID- 3857497 TI - Caesarean section in Christchurch. AB - Base hospital caesarean section rates in Christchurch have risen from 4.1% in 1967 to 14.1% in 1982. However, the Christchurch district caesarean section rate for 1982 was only 9.6%. Analysis of the indications for caesarean section according to the year showed that most indications have increased in frequency and that between 1977 and 1982 this increase was highly significant for failure to progress and fetal distress. Analysis of the indications for caesarean section according to the type of antenatal booking revealed that in 1982 private patients underwent caesarean section more frequently than clinic patients and that they were more likely to have the caesarean section for failure to progress or fetal distress. Emergency transfer patients had an even higher primary caesarean section rate for most indications. PMID- 3857498 TI - Incidence of acquired primary hypolactasia in three New Zealand racial groups. AB - The relative frequency of acquired primary hypolactasia has been determined in adult Maoris, Samoans and Europeans by measuring an alteration in breath hydrogen concentration two hours after a 50 g oral lactose load. By this indirect measurement hypolactasia was present in 64% of Maoris, 54% of Samoans and 9% of Europeans. The differences between Maoris and Europeans (p less than 0.001) and between Samoans and Europeans (p less than 0.001) were significant. PMID- 3857499 TI - Reform of the Mental Health Act. PMID- 3857500 TI - The practice of artificial insemination of donor sperm in New Zealand. PMID- 3857501 TI - The use of a general purpose computed tomography unit. AB - Two thousand five hundred and forty computed tomography (CT) examinations over a three year period were studied to determine the number of examinations of the body being performed, the use of body CT by clinicians from different specialties and the proportion of such patients with known or suspected malignant disease. Examinations were divided into head and body categories, the latter being sub divided into groups on the basis of known neoplastic, suspected neoplastic and non-neoplastic disease. Forty-eight percent of examinations were of the body, and of these 44% were of patients with suspected neoplasia referred by general clinicians. The number of patients with known extracranial neoplasia referred by oncologists or radiotherapists was similar to the number of patients in whom there was no suspicion of malignancy. There is a significant demand for CT in the management of non-malignant conditions as well as in known or suspected malignant disease. The figures provided should be of value to those involved in establishing or updating CT units in general hospitals. PMID- 3857502 TI - Expressed interest in health-related lifestyle change in three communities. AB - Little is known about the public's motivation to change lifestyles in a healthy direction. This study reports results from surveys conducted in three divergent New Zealand communities, two urban and one rural (total n = 467), and shows a striking degree of interest in changing lifestyles, and a uniformity of preferences. Two-thirds or more of all adults interviewed expressed interest in changing their lifestyles, and three lifestyle areas consistently emerged as being of top priority: fitness, losing weight and stress-management. When a Maori subsample is examined, an even higher degree of interest was found than that for Europeans. The implications of these findings for the planning of health promotion activities are discussed. PMID- 3857504 TI - Abortion and medical discipline. PMID- 3857503 TI - Drug binding to plasma proteins. PMID- 3857505 TI - In defence of traditional massage. PMID- 3857506 TI - Trimet v amoxycillin in the treatment of otitis media in children. PMID- 3857508 TI - Selenium and man. PMID- 3857507 TI - Serological markers of hepatitis B infection in Niue children. AB - Hepatitis B infection is hyperendemic in the adult population of Niue. In order to determine the age at which infection is acquired and the contribution of vertical and horizontal transmission, the sera from 1055 children were tested for markers of hepatitis B infection. Eleven percent (11.0%) were found to be carriers of hepatitis B surface antigen (HBsAg) and a further 33.6% had antibody to hepatitis B surface antigen (anti-HBs). While less than 15% of the population were infected before the age of two years, these children had the greatest risk of becoming chronic carriers. The simplest method of controlling hepatitis B infection in Niue would be to immunise all newborn babies. PMID- 3857509 TI - The educational value of grand rounds. AB - There is little recent factual data published relating to the effectiveness of grand rounds as a forum for teaching and learning. This study, undertaken to evaluate the educational value of grand rounds at the Auckland Hospital showed that when required to answer a questionnaire based on medical information transmitted at the previous week's grand round, members of the audience who had been present scored significantly higher than those who were absent. (Possible score 16; score for those present was 12.1, those absent 3.9, p less than 0.001.) However, it was also shown that some in the audience had acquired erroneous information, and although the problem was not a large one, it is recommended that chairmen of grand rounds learn to recognise the potential for confusion when experts speak imprecisely or disagree over points of patient management. PMID- 3857510 TI - Childhood crises--who to tell? AB - This study describes an investigation of community attitudes in Christchurch towards sources of help for children in crisis situations. To whom the child turns is particularly important when a child is unable or unwilling to ask a parent for help. The children sampled showed a preference for informal sources of support (such as friends, relatives, rather than formal, such as teachers, crisis counsellors, doctors). Most professionals believed children should use their services in preference to those of other professions. The adults rated formal sources of support, particularly teachers, much higher than the children. Of the formal services crisis-counsellors, and in particular the Childhelp Line, a 24 hour telephone counselling service for children, was the most preferred. The findings tend to demonstrate the value of a child-oriented crisis line to the community. PMID- 3857511 TI - Enoxacin for the treatment of urinary tract infection. AB - Enoxacin, a new orally absorbed broad spectrum anti-microbial agent, was used to treat 25 patients with moderate or severe urinary tract infections. Many were complicated and associated with renal insufficiency. Eighteen of the 25 were cured, five had a relapse and two became reinfected with a resistant Streptococcus faecalis. Fourteen of the patients reported side effects, including six with a neurological syndrome, one with widespread arthralgia and one with an Achilles tendonitis. Further studies are indicated with this potent drug to assess its role in the management of severe or complicated urinary infections and to assess the optimum dose and duration of therapy. PMID- 3857513 TI - Australasian Society of Clinical and Experimental Pharmacology, New Zealand branch, May 1984. Abstracts. PMID- 3857512 TI - Blood donors of the Canterbury regional blood transfusion service. AB - A study of 1262 city blood donors showed that they are significantly different from the urban population eligible to donate. City blood donors are youthful and live in middleclass suburbs, donating in relation to work. Men predominate (1.3:1) and donate for longer than women. Young women donate blood readily but often discontinue in their late twenties, whereas in the country, women predominate (1.3:1), and continue giving into their forties. Recruited city donors are frequently women in their thirties and forties. It is concluded that future city blood donor recruitment should be directed to suburban women in their thirties and forties. PMID- 3857514 TI - The West Otago illness. PMID- 3857515 TI - The influence of surfactant amphiphiles on the esterase activity of (bile-salt stimulated) lipase from human milk. PMID- 3857516 TI - Tobogganing--a perilous ride. PMID- 3857517 TI - Asthma deaths in New Zealand. PMID- 3857518 TI - Admission to coronary care units. PMID- 3857519 TI - Lumbar puncture in subarachnoid haemorrhage: yes or no? AB - Seventy patients admitted to the Auckland hospitals suffering from acute subarachnoid haemorrhage without major neurological deficits underwent diagnostic lumbar puncture. No patients showed immediate deterioration. Where the clinical indication exists and the circumstances require, lumbar puncture continues to be an appropriate investigation in establishing the diagnosis of subarachnoid haemorrhage. PMID- 3857520 TI - The management of reflux oesophagitis and oesophageal stricture. AB - In a five year period, 140 patients with hiatal hernia were admitted to the cardiothoracic surgery department for investigation and treatment of their condition. Seventy-three of these patients had oesophageal strictures and of these 35 were treated by oesophageal dilatation and Nissen fundoplication. One patient with an intractable stricture was treated by oesophagogastrectomy. The results of surgery were found to be identical with 47 patients without strictures who underwent Nissen fundoplication. Eighty-three percent of patients were symptom free with normal barium meals five to nine years postoperatively, 11% had only minor reflux or dysphagia and were greatly improved as compared with their preoperative state and 6% suffered significant recurrence of symptoms. Postoperative morbidity was slight and there was no mortality. Thirty-six patients with strictures were treated as outpatients by intermittent bouginage. Eleven patients still attend the department at approximately three monthly intervals. PMID- 3857521 TI - The epidemiology of campylobacter infections in Christchurch 1981-83. AB - The epidemiology of cases of campylobacter infection in Christchurch for 1981-83 is studied. The condition is the most common notifiable disease, occurring mainly in summer and in children under five years and young adults (15 to 35 years). There is evidence to suggest that a rural residence, associated with live animals, or handling raw meat, are risk factors. Clearance occurs within two months in 90% of cases. PMID- 3857522 TI - Allergy to basidiospores: immunologic studies. AB - Fruiting bodies of larger basidiomycetous fungi were collected over a 15 month period from natural habitats and a total of 67 different antigenic extracts were prepared from spores or tissue, in buffered saline, pH8, and standardised at 1:50 and 1:10 (W/V) concentrations. A number of heterogeneous and diagnosed allergic patients were tested by skin prick test method with the extracts of either individual species or mixtures of related species. Up to 22% patients reacted positively, indicating their possible IgE mediated reactions and the allergenic potency of the species involved. The potential allergenicity of many of these genera and/or species has not been reported previously. The findings suggest that basidiospores could be a possible major factor for the high respiratory allergy incidence in the Auckland region and necessitate further investigation. PMID- 3857524 TI - The use of seat-belts. PMID- 3857523 TI - Issues arising from in vitro fertilisation, artificial insemination by donor and related problems in biotechnology. PMID- 3857525 TI - Occupational health hazard for sports administrators. PMID- 3857527 TI - In vitro activity of timentin. PMID- 3857526 TI - Flecainide acetate in resistant atrial fibrillation. PMID- 3857528 TI - Uvulopalatopharyngoplasty: a cure for snoring. PMID- 3857529 TI - Feminine consciousness and the nature of nursing practice: a historical perspective. PMID- 3857530 TI - Disaster nursing. 3. The Emergency Medical Unit (E.M.U.) and the Forward Medical Aid Unit (F.M.A.U.). PMID- 3857531 TI - Percutaneous ultrasonic destruction of renal calculi. PMID- 3857532 TI - Self defence for women. PMID- 3857534 TI - Nursing manpower planning working parties. PMID- 3857533 TI - 'Reading the signs'--clues to the development of a relevant nursing service. PMID- 3857535 TI - Do hospital employees deserve health promotion programmes? PMID- 3857536 TI - Nursing in the middle East. A Jordan experience. PMID- 3857537 TI - [The expected number of active dentists in Japan]. PMID- 3857538 TI - [An experimental study on the effect of premature extraction of primary teeth on the eruption of their successors and neighboring permanent teeth]. PMID- 3857539 TI - [Effect of antibiotics on intracellular bacteria. 1. Phagocytic action of mouse polymorphonuclear leukocytes]. PMID- 3857540 TI - [Effect of antibiotics on intracellular bacteria. 2. Effect of antibiotic treatment on Staphylococcus aureus 209P phagocytized by mouse polymorphonuclear leukocytes]. PMID- 3857541 TI - [Lysozyme activity in saliva]. PMID- 3857542 TI - [Transverse testing under static and dynamic point loading using Ag-In alloys]. PMID- 3857543 TI - [Effects of antibiotics on cultured muscle and nerve cells]. PMID- 3857544 TI - [Identification of staphylococci isolated from dentinal caries and infected root canals, and their drug susceptibility]. PMID- 3857545 TI - [Effects of NaF on phenol and indole production in human saliva]. PMID- 3857546 TI - Economics of Practice Monitor 1983. PMID- 3857547 TI - The conservative application of resin labial veneers: a case report. PMID- 3857548 TI - Endodontic access cavities. Everything old is new again. PMID- 3857549 TI - Synthetic bone grafts. Miracle materials or mighty marketing? PMID- 3857550 TI - [Renal tubular acidosis associated with acute myeloid leukemia, diagnosed in a case of hypokalemic paralysis]. PMID- 3857551 TI - [Electrolyte changes in acute leukemia in childhood]. AB - Electrolyte imbalance in leukemia can be due to either organ infiltration and cell death or to a side effect of cytostatic drugs. From the wide variety of these disturbances seen in acute leukemias in childhood, the excess of potassium is most dangerous. Further electrolyte changes, which are however less evident, are hyperphosphataemia, hyperphosphaturia, and hypocalcaemia. The destruction of a large amount of cells during aggressive induction therapy can boost the electrolyte imbalance and therefore lead to renal failure. Such situations are demonstrated in two cases. Following Vincristine and Cyclophosphamide administration, electrolyte changes such as acute or prolonged decrease of sodium in the serum and urinary loss of sodium are seen frequently. Based on the data from 20 patients with acute lymphoblastic leukemias we describe the dynamics of this process. These changes are probably caused by the syndrome of inadequate ADH secretion. The clinical importance of these findings are discussed and procedures for improving therapy are set out. PMID- 3857552 TI - Dentistry in Grenada following the intervention. PMID- 3857553 TI - Dental caries in a Laotian refugee population. PMID- 3857555 TI - Two-year clinical evaluation of a proprietary composite resin for the restoration of primary posterior teeth. PMID- 3857554 TI - [Chromosome 3 abnormalities with dysmegakaryocytopoiesis in in subacute transformation in chronic myeloid leukemia]. AB - A patient with Ph1 positive chronic myeloid leukemia developed accelerated phase with cytological abnormalities of platelets and megakaryocytes, and persistence of a high platelet count, after the failure of a course of intensive chemotherapy. During this phase, the karyotype analysis revealed two different Ph1 positive clones: one with a pericentric inversion of chromosome 3, the other with the same abnormality and a paracentric inversion of the second chromosome 3. Cases of acute leukemia with normal thrombopoiesis and abnormalities of chromosome 3, especially paracentric inversion, have already been reported. The significance of this association is discussed. PMID- 3857556 TI - Effect of light exposure time on the depth of curing in various composite resin systems. PMID- 3857557 TI - Effect of neonatal laryngoscopy and endotracheal intubation on palatal symmetry in two- to five-year old children. PMID- 3857558 TI - Effect of trauma to the primary incisors on permanent successors in different developmental stages. PMID- 3857559 TI - Comparison of chloral hydrate with and without promethazine in the sedation of young children. PMID- 3857560 TI - Dental radiographic diagnostic resolution with minimal exposure. PMID- 3857561 TI - Delayed eruption of maxillary permanent first and second molars due to an ectopically positioned maxillary third molar. PMID- 3857562 TI - Ewing's tumor of the jaws. PMID- 3857563 TI - Prevalence of dental caries in Indiana school children: results of 1982 survey. PMID- 3857564 TI - Effects of hyperprolactinemia on the accessory sexual organs of the male rat. AB - The growth-promoting effect of prolactin on the ventral prostate lobe, the anterior prostate lobe (or coagulating gland), and seminal vesicles has been studied before, during and after puberty in rats up to 5 months of age. Pituitaries from female rats were grafted under the renal capsule of 23-26-day old male rats. Within 1/2 month substantial (five- to ten-fold) hyperprolactinemia occurred followed by a gradual decline; levels were still high 4 months after grafting. A statistically significant increase in the weight of the seminal vesicles and the ventral and anterior prostate lobes was observed 1 month after implantation. This effect was only maintained for the seminal vesicles during the next 3 months. Hyperprolactinemia did not influence testosterone metabolism. In the ventral prostate lobe, 1 month after grafting, the nuclear androgen receptor content increased, whereas the cytosolic androgen receptor content decreased. These results suggest that the growth-promoting effect of prolactin, on the ventral prostate lobe of the rat, is brought about by an increased translocation of the androgen receptor. PMID- 3857565 TI - Useful new anti-cancer agent. PMID- 3857566 TI - [Possibilities for the preparation of topograms of the face using the Moire strip method]. PMID- 3857567 TI - [Differential diagnosis of denture stomatitis]. PMID- 3857568 TI - [Use of paraformaldehyde gel for maintaining the sterility of preparatory and root instruments]. PMID- 3857569 TI - [Examination of the temporomandibular joint with an orthopantomographic x-ray machine]. PMID- 3857570 TI - [Psychoanalytic treatment of a 10-year-old boy with Gilles de la Tourette syndrome]. PMID- 3857571 TI - Meet the average general dental practitioner. PMID- 3857573 TI - Interstitial foam cells in the nephrotic syndrome belong to the monocyte/macrophage lineage. AB - Interstitial foam cells are occasionally seen in patients with the nephrotic syndrome. In a group of patients with the nephrotic syndrome we were able to demonstrate that these cells express markers characteristic of the monocyte/macrophage lineage. Their presence was related to the previous duration of proteinuria, but they had no apparent influence on the subsequent evolution of renal function. The mechanisms leading to their presence are unknown. PMID- 3857572 TI - [Estrogen and progesterone receptors in the decidual tissue of women administered prostaglandins and experiencing spontaneous abortion]. AB - A study was made of the content of estrogen and progesterone receptors (ER and PR, respectively) in the cytosol and nuclei of the decidual tissue of women in induced and spontaneous abortion at 7-12 week pregnancy. Abortion was done surgically (control group) and in preliminary cervical dilatation with the help of intravaginal suppositories with a synthetic prostaglandin analog of E1-16.16 dimethyltrans-delta 2-PGE1 (ONO-802) group or laminaria. The level of ER in the cytosol and nuclei of the decidual tissue of the control group was twice as low as that of PR, and the ER/PR ratio in cell fractions as well as in general cell receptors was 0.58 +/- 0.09, 0.42 +/- 0.07 and 0.56 +/- 0.07, respectively. The suppositories with ONO-802 caused a statistically significant decrease in the PR content in each of the cell fractions and cytoplasmic ER resulting in an increase in the ER/PR ratio to 0.87 +/- 0.06 (P less than 0.05) in the cytosol, 0.09 +/- 0.24 (P less than 0.05) in the nuclei, and 0.86 +/- 0.8 (P less than 0.05) in the total cell. A decrease in the PR level in both cell fractions and the ER level in the fraction of the nuclei with an acute increase in the content of cytoplasmic ER was marked in spontaneous abortion. The ER/PR ratio also rose to ER and was 1.98 +/- +/- 0.2 (P less than 0.001) in the cytosol and 1.02 +/- 0.16 (P less than 0.05) in the total cell. It was concluded that an absolute and/or relative decrease in the PR level plays an important role in mechanism of abortion. PMID- 3857574 TI - Solution of the embedding problem and decomposition of symmetric matrices. AB - A solution of the problem of calculating cartesian coordinates from a matrix of interpoint distances (the embedding problem) is reported. An efficient and numerically stable algorithm for the transformation of distances to coordinates is then obtained. It is shown that the embedding problem is intimately related to the theory of symmetric matrices, since every symmetric matrix is related to a general distance matrix by a one-to-one transformation. Embedding of a distance matrix yields a decomposition of the associated symmetric matrix in the form of a sum over outer products of a linear independent system of coordinate vectors. It is shown that such a decomposition exists for every symmetric matrix and that it is numerically stable. From this decomposition, the rank and the numbers of positive, negative, and zero eigenvalues of the symmetric matrix are obtained directly. PMID- 3857575 TI - Cell-cycle dependence and properties of the HeLa cell DNA polymerase system. AB - Analysis of the properties of the DNA polymerase (pol) system as a function of fundamental factors of the assay environment allowed a rather accurate estimation of its dependence on the HeLa cell cycle. For pol alpha, the temperature and pH optima were 38.1 degrees C and 8.0, respectively; for pol beta, these optima were 36.2 degrees C and pH 7.4. Pol gamma showed a pH optimum at 7.7. Optimum activity for both the alpha and beta enzymes was observed at 60 mM Tris. The maximal activity at 36.2 degrees C and pH 7.4 was associated with resistance to N ethylmaleimide (MalNEt), whereas that at 38.1 degrees C and pH 8.0 was sensitive to MalNEt. Incorporation of [3H]dTTP was maximal after 1 hr of incubation for the former activity and after 4 hr, for the latter. In extracts from cells in early S phase, the pol activity decreased after 1 hr of incubation, was MalNEt-resistant, and was characterized by temperature and pH optima at 36.2 degrees C and 7.4, respectively. In extracts of late S-phase cells, the pol-catalyzed incorporation of [3H]dTTP continued after 4 hr of incubation, was MalNEt-sensitive, and was characterized by temperature and pH optima at 38.1 degrees C and 8.0, respectively. Thus, a pol beta-type activity appeared in early S phase, whereas a pol alpha-type activity appeared in late S. During the G1, M, and G2 phases, a background level of pol activity was observed that showed intermediate kinetic properties. PMID- 3857576 TI - Alternative view of enzyme reactions. AB - Since adsorption of the substrate in the active site of an enzyme can occur only if all solvent is squeezed out from between them, any reaction between them takes place in the absence of any intervening solvent--i.e., as it would in the gas phase. Recent work has shown that ionic reactions in the gas phase often differ greatly from analogous processes in solution. Therefore, current interpretations of enzyme reactions in terms of solution chemistry are misguided. The large rates and specificity of enzyme reactions may be due simply to elimination of the solvent. The cleavage of peptides by chymotrypsin and carboxypeptidase A can be interpreted satisfactorily in this way. PMID- 3857577 TI - Adenovirus EIIA early promoter: transcriptional control elements and induction by the viral pre-early EIA gene, which appears to be sequence independent. AB - A molecular dissection of the adenovirus EIIA early (E) promoter was undertaken to study the sequence elements required for transcription and to examine the nucleotide sequences, if any, specific for its trans-activation by the viral pre early EIA gene product. A chimeric gene in which the EIIA-E promoter region fused to the coding sequences of the bacterial chloramphenicol acetyltransferase (CAT) gene was used in transient assays to identify the transcriptional control regions. Deletion mapping studies revealed that the upstream DNA sequences up to 86 were sufficient for the optimal basal level transcription in HeLa cells and also for the EIA-induced transcription. A series of linker-scanning (LS) mutants were constructed to precisely identify the nucleotide sequences that control transcription. Analysis of these LS mutants allowed us to identify two regions of the promoter that are critical for the EIIA-E transcription. These regions are located between -29 and -21 (region I) and between -82 and -66 (region II). Mutations in region I affected initiation and appeared functionally similar to the "TATA" sequence of the commonly studied promoters. To examine whether or not the EIIA-E promoter contained DNA sequences specific for the trans-activation by the EIA, the LS mutants were analyzed in a cotransfection assay containing a plasmid carrying the EIA gene. CAT activity of all of the LS mutants was induced by the EIA gene in this assay, suggesting that the induction of transcription of the EIIA-E promoter by the EIA gene is not sequence-specific. PMID- 3857578 TI - Molecular cloning, cDNA sequencing, and chemical synthesis of cecropin B from Hyalophora cecropia. AB - Two cDNA clones containing coding information for cecropin B from the Cecropia moth (Hyalophora cecropia) were identified by means of a synthetic probe. Sequencing of the two inserts showed that cecropin B is processed from a 62-amino acid residue precursor molecule including a 26-residue leader peptide and a COOH terminal glycine residue. The latter presumably donates the nitrogen of the amide group present on the COOH-terminal leucine residue of the mature cecropin B. The sequence deduced for the mature cecropin B differed in the COOH-terminal region from the tentative structure previously determined by carboxypeptidase digestion. To settle the discrepancy, cecropin B was synthesized according to the cDNA sequence with an amidated COOH-terminal leucine. Natural and synthetic cecropin B were found to be indistinguishable with respect to electrophoretic mobility and antibacterial activity against seven different bacteria. The COOH-terminal tetrapeptides were isolated from both natural and synthetic cecropin B and found to be indistinguishable. The correct sequence for cecropin B is (formula; see text). PMID- 3857579 TI - Purification and characterization of two cartilage-inducing factors from bovine demineralized bone. AB - Two naturally occurring peptides that induce chondrogenesis in culture have been purified to apparent homogeneity. These cartilage-inducing factors (CIF-A and CIF B) were isolated from bovine demineralized bone by dissociative extraction, gel filtration, cation-exchange chromatography, and reversed-phase HPLC. CIF-A and CIF-B at concentrations of 1-10 ng/ml each induce embryonic rat mesenchymal cells in culture to assume a cartilage morphology and synthesize cartilage-specific proteoglycan and type II collagen. The amino acid compositions of CIF-A and CIF-B are similar but not identical. Both factors have an apparent Mr of 26,000, as determined by NaDodSO4/PAGE. In the presence of 2-mercaptoethanol, both are converted to species of about one-half that Mr, indicating that they are dimers of identical or very similar chains. PMID- 3857580 TI - A method for mapping intranuclear protein-DNA interactions and its application to a nuclease hypersensitive site. AB - We have devised a method for mapping sites on DNA within the nucleus that are protected against nuclease attack by interaction with bound protein or other factors. This "footprinting" method uses an end-labeled sequence-specific DNA probe, which is annealed to the DNA from nuclear digests under carefully controlled conditions. The annealed complexes are treated with single-strand specific nuclease, the resulting duplex molecules are electrophoresed on gels, and the gels are autoradiographed. The high sensitivity and resolution of the method have made it possible to obtain a detailed map of DNase I cutting patterns in the 5' flanking sequence of the chicken adult beta (beta A)-globin gene within nuclei from various tissues. In nuclei from adult erythrocytes, this domain is hypersensitive to nucleases. However, we detect within the domain two well defined regions that are protected against attack, indicating the presence of one or more bound factors. Nuclei from oviduct or 5-day-old embryonic erythrocytes, in which the domain is not hypersensitive, show limited and different patterns of protection. PMID- 3857581 TI - Two tissue-specific isozymes of creatine kinase have closely matched amino acid sequences. AB - Creatine kinase activity is associated with different isozyme species. We have examined two of these: the cytoplasmic brain (B) isozyme that is expressed in many tissues and is reported to be induced by estrogen and the developmentally regulated cytoplasmic muscle (M) isozyme that is found predominantly in differentiated muscle tissue. Recently, we cloned and sequenced the cDNA for the M isoenzyme of rabbit creatine kinase. We now report the isolation of B-isozyme cDNAs and the deduced primary structure of the polypeptide. The translated cDNA nucleotide sequence was cross-checked by fast-atom bombardment/mass spectrometry of tryptic fragments from the protein. The sequence is exactly colinear with the rabbit M isozyme and the two isozymes have 80% nucleotide and amino acid sequence identity. There are blocks of 36 and 41 amino acids where the amino acid sequence is conserved exactly. The colinearity of the two sequences and the extent of their identity makes it unlikely that either isozyme has unique polypeptide domains that account for specialized functions. The rationale for the existence of these creatine kinase isozymes, with distinct biological features, evidently is at the level of regulation of individual isozyme expression. PMID- 3857582 TI - Differential efficiencies of in vitro translation of mouse c-myc transcripts differing in the 5' untranslated region. AB - We have studied the in vitro translational efficiencies of two murine c-myc transcripts synthesized in vitro that differ in the lengths of their 5' noncoding regions (448 and 83 nucleotides) and also in their 3' noncoding regions. When translated in a reticulocyte translation system, the shorter transcript was translated 10-fold more efficiently. These results are consistent with the hypothesis of Saito et al. [Saito, H., Hayday, A. C., Wiman, K., Hayward, W. S. & Tonegawa, S. (1983) Proc. Natl. Acad. Sci. USA 80, 7476-7480] that translation of full-length human c-myc mRNA is normally repressed, whereas in several Burkitt lymphomas that have deletions of the mRNA 5' noncoding region (resulting from translocation of the c-myc gene), translation of the c-myc mRNA is more efficient. Our results suggest that activation of murine c-myc expression by production of a more efficient mRNA might in some cases play a role in neoplastic transformation. PMID- 3857583 TI - Multiply drug-resistant human KB carcinoma cells have decreased amounts of a 75 kDa and a 72-kDa glycoprotein. AB - Human KB carcinoma cells were selected in sequential steps for resistance to colchicine and found to be cross-resistant to multiple drugs, including vinblastine, adriamycin, and actinomycin D. Compared with the parental line, the multiply resistant cells have decreased amounts of two [35S]methionine-labeled proteins with apparent molecular masses of 75 and 72 kDa. These proteins reappear in a revertant, drug-sensitive cell line. Both proteins are labeled with [14C]glucosamine and are retained on a wheat germ agglutinin-agarose column, indicating that they are glycoproteins. These data suggest that in this human cell line, these two glycoproteins can serve as a marker of the multiple drug resistance phenotype and may play a role in its etiology. PMID- 3857584 TI - Lens-specific expression of the chloramphenicol acetyltransferase gene promoted by 5' flanking sequences of the murine alpha A-crystallin gene in explanted chicken lens epithelia. AB - We have developed a system using explanted embryonic chicken lens epithelia to express foreign recombinant genes containing crystallin DNA regulatory sequences introduced by calcium phosphate transfection. Optimal results were obtained with lens epithelia from 14-day embryos transfected 1 day after explantation and assayed 3 days later. When DNA sequences (-364 to +45) of the murine alpha A crystallin gene were inserted in the pSVO-CAT expression vector of Gorman et al. [Gorman, C. M., Moffat, L. F. & Howard, B. H. (1982) Mol. Cell. Biol. 2, 1044 1051] in the same orientation as in the crystallin gene, they promoted chloramphenicol acetyltransferase (CAT; EC 2.3.1.28) activity in the transfected epithelia. Sequences 87 to 364 base pairs upstream from the murine gene cap site were required for CAT gene expression. These crystallin gene regulatory sequences did not promote CAT expression in primary cultures of embryonic chicken fibroblasts or other nonlens cells. By contrast, the long terminal repeat of Rous sarcoma virus and the early promoter of simian virus 40 promoted CAT activity in lens and nonlens cells. Our experiments thus demonstrate that the explanted embryonic chicken lens epithelium is an advantageous recipient for identifying lens-cell-specific regulatory sequences of crystallin genes and implicate a DNA region upstream of the "TATA box" for regulation of the murine alpha A-crystallin gene. These experiments also suggest that explanted epithelia from other tissues may be useful for studying the expression of foreign genes. PMID- 3857585 TI - Nature of the charged-group effect on the stability of the C-peptide helix. AB - The residues responsible for the pH-dependent stability of the helix formed by the isolated C-peptide (residues 1-13 of ribonuclease A) have been identified by chemical synthesis of analogues and measurement of their helix-forming properties. Each of the residues ionizing between pH 2 and pH 8 has been replaced separately by an uncharged residue. Protonation of Glu-2- is responsible for the sharp decrease in helix stability between pH 5 and pH 2, and deprotonation of His 12+ causes a similar decrease between pH 5 and pH 8. Glu-9- is not needed for helix stability. The results cannot be explained by the Zimm-Bragg model and host guest data for alpha-helix formation, which predict that the stability of the C peptide helix should increase when Glu-2- is protonated or when His-12+ is deprotonated. Moreover, histidine+ is a strong helix-breaker in host-guest studies. In proteins, acidic and basic residues tend to occur at opposite ends of alpha-helices: acidic residues occur preferentially near the NH2-terminal end and basic residues near the COOH-terminal end. A possible explanation, based on a helix dipole model, has been given [Blagdon, D. E. & Goodman, M. (1975) Biopolymers 14, 241-245]. Our results are consistent with the helix dipole model and they support the suggestion that the distribution of charged residues in protein helices reflects the helix-stabilizing propensity of those residues. Because Glu-9 is not needed for helix stability, a possible Glu-9-...His-12+ salt bridge does not contribute significantly to helix stability. The role of a possible Glu-2-...Arg-10+ salt bridge has not yet been evaluated. A charged-group effect on alpha-helix stability in water has also been observed in a different peptide system [Ihara, S., Ooi, T. & Takahashi, S. (1982) Biopolymers 21, 131 145]: block copolymers containing (Ala)20 and (Glu)20 show partial helix formation at low temperatures, pH 7.5, where the glutamic acid residues are ionized. (Glu)20(Ala)20Phe forms a helix that is markedly more stable than (Ala)20(Glu)20Phe. The results are consistent with a helix dipole model. PMID- 3857586 TI - Renaturation of skeletal muscle tropomyosin: implications for in vivo assembly. AB - The observation that the alpha beta heterodimer is the predominant species of tropomyosin in rabbit skeletal muscles has led to the suggestion that this species assembles preferentially. To understand the molecular basis of this assembly process, we have studied renaturation under conditions that favor heterodimer formation. When skeletal muscle tropomyosin composed of equal amounts of alpha and beta subunits is renatured either by cooling or by dialysis a distribution that favors homodimers is generated. In contrast, rapid renaturation by dilution from urea favors the heterodimer. Further analysis of this latter renaturation procedure with cysteine-cleavage fragments of tropomyosin using circular dichroic measurements shows that as few as 30 residues in the NH2 terminal third of each tropomyosin subunit are involved in the initial interaction that results in heterodimer formation. Based on the density of sequence substitutions between the alpha and beta subunits, that region probably includes residues 36-64. PMID- 3857587 TI - Model of cortical organization embodying a basis for a theory of information processing and memory recall. AB - Motivated by V. B. Mountcastle's organizational principle for neocortical function, and by M. E. Fisher's model of physical spin systems, we introduce a cooperative model of the cortical column incorporating an idealized substructure, the trion, which represents a localized group of neurons. Computer studies reveal that typical networks composed of a small number of trions (with symmetric interactions) exhibit striking behavior--e.g., hundreds to thousands of quasistable, periodic firing patterns, any of which can be selected out and enhanced with only small changes in interaction strengths by using a Hebb-type algorithm. PMID- 3857589 TI - Transformation of human cells by DNAs ineffective in transformation of NIH 3T3 cells. AB - Neonatal human foreskin fibroblasts can be transformed to anchorage-independent growth by transfection with DNAs inefficient in transforming NIH 3T3 cells. Human cells transfected with DNA from GM 1312, a multiple myeloma cell line, or MOLT-4, a permanent lymphoblast line, grow without anchorage at a much higher frequency than do the parental cells and their DNAs can transform human cell recipients to anchorage-independent growth; they have extended but not indefinite life spans and are nontumorigenic. Human fibroblasts are also transformed by DNAs from two multiple myeloma lines that also transform 3T3 cells; however, restriction analysis suggests that different transforming genes in this DNA are acting in the human and murine systems. These results indicate that the human cell transfection system allows detection of transforming genes not effective in the 3T3 system and points out the possibility of detection of additional transforming sequences even in DNAs that do transform murine cells. PMID- 3857588 TI - Induction of transformation and continuous cell lines from normal human mammary epithelial cells after exposure to benzo[a]pyrene. AB - Rapidly growing primary cultures of normal human mammary epithelial cells (HMEC) were exposed to 1 microgram of benzo[a]pyrene (B[a]P) per ml for two or three 24 hr periods. The B[a]P-treated populations consistently contained cells displaying a longer period of active growth in culture compared to the untreated control cells. Widespread heterogeneity in morphology and growth patterns was evidenced in these "extended life" (EL) cultures, with multiple sequential changes in these parameters occurring during the course of their life in culture. Two apparently immortal continuous cell lines have thus far emerged from these EL cultures. These lines have been characterized to be of human mammary epithelial origin and derived from the originally treated HMEC specimen. The continuous lines do not appear to be malignantly transformed as they do not cause tumor formation in nude mice and show little or no anchorage-independent growth. Nonetheless, they have acquired several properties characteristic of tumor-derived HMEC, which distinguish them from their normal progenitors. These cell lines, as well as the EL strains, may provide useful substrates for studies to determine what agents can induce further transforming events. Additionally, analysis of the multiple steps occurring in the El cultures, as well as in the emergence of the continuous cell lines, could potentially elucidate the processes occurring during human epithelial cell carcinogenesis and escape from senescence. PMID- 3857590 TI - Synthesis and secretion of proteins resembling platelet-derived growth factor by human glioblastoma and fibrosarcoma cells in culture. AB - Immunoprecipitation of proteins extracted from metabolically labeled human glioblastoma and fibrosarcoma cells with antiserum to platelet-derived growth factor (PDGF) showed that these cells express and secrete proteins that are recognized specifically by the antiserum. The molecular masses of immunoprecipitated proteins in the lysates of the malignant cells ranged from 16 kDa to 140 kDa. Both cell lines secreted a 31-kDa polypeptide with structural, immunological, and biological properties similar to those of human PDGF. These cell lines were shown to synthesize a 4.4-kb mRNA that contained sequences from all the six currently identified exons of the human c-sis gene. These data suggest that the PDGF-like proteins in the two mesenchyme-derived transformed cells are encoded at least in part by the c-sis locus. PMID- 3857591 TI - Photoreactivation of UV-induced pyrimidine dimers and erythema in the marsupial Monodelphis domestica. AB - Post-UV treatment of the gray, short-tailed opossum Monodelphis domestica with photoreactivating light (320-400 nm) suppressed the appearance of UV-induced erythema as evidenced by an increase in the dose of UV required to elicit an erythemal response. The average erythema dose for animals held in the dark following UV exposure was 620 +/- 40 J/m2, whereas 2460 +/- 110 J/m2 were required for erythema induction with animals exposed to 90 min of photoreactivating light post-UV. Pre-UV exposure to photoreactivating light had no effect on the UV induction of erythema. The dose-response for the photoreversal of pyrimidine dimers in epidermal DNA of M. domestica was similar to that for the photoreactivation of erythema induction. These data not only support the notion that DNA is the primary chromophore involved in the induction of erythema but also identify pyrimidine dimers as the major DNA change responsible for its induction. These results also identify M. domestica as a useful whole-animal system with which to determine the role of pyrimidine dimers in other photobiological responses of mammalian skin. PMID- 3857592 TI - Interferon stimulates cholesterol and phosphatidylcholine synthesis but inhibits cholesterol ester synthesis in HeLa-S3 cells. AB - Treatment of human HeLa-S3 cells (an epidermoid carcinoma line) with human beta interferon (640 units/ml) selectively alters lipid metabolism by increasing cholesterol synthesis per mg of cell protein as measured by 1-hr pulse-labeling of cells with [3H]acetate. Cholesterol synthesis in interferon-treated cells is increased approximately equal to 60% at 24 hr after the beginning of treatment and approximately equal to 450% at 48 hr. Continuous labeling of interferon treated cells with [14C]acetate shows increased accumulation of label in cholesterol when normalized per mg of cell protein, as well as an increase in the specific activity of cholesterol in the treated cells. In contrast, interferon treatment decreases the accumulation of [14C]acetate into cholesterol esters. The [14C]acetate labeling of sphingomyelin, phosphatidylethanolamine, and triglycerides shows no change compared to untreated controls. The labeling of phosphatidylcholine was moderately increased in treated cells. The interferon induced changes in lipid metabolism are a part of a coordinated response of cells to interferon treatment, characterized by reduced cell proliferation and cell motility and an increase in cell size and mass. The increased cholesterol synthesis is consistent with a model in which beta-interferon treatment of HeLa cells inhibits the endocytosis of cholesterol-containing low density lipoprotein, which results in an increase in cholesterol synthesis. PMID- 3857593 TI - Isolation of embryonal carcinoma cell lines that express integrated recombinant genes flanked by the Moloney murine leukemia virus long terminal repeat. AB - We have used a producer NIH 3T3 cell line that secretes, together with the helper Moloney murine leukemia virus (Mo-MuLV), a transducing recombinant virus containing the neomycin-resistance gene linked to the Mo-MuLV long terminal repeat (LTR). By infecting three embryonal carcinoma cell lines, PCC4.aza1R, F9tk , and Nulli-SCC1, with this recombinant virus, we have isolated many transductant clones that stably express the integrated neomycin-resistance gene. These clonal transductant lines consist of undifferentiated embryonal carcinoma cells as judged by morphology, tumorigenicity in 129/Sv mice, and cell-surface antigenic markers. Analysis of the integrated recombinant viral genes by Southern blot hybridization revealed that some of the lines have single copies, whereas others have multiple copies, probably in multiple sites. Although these transductant lines contained many copies of helper Mo-MuLV integrated in the cellular genome, expression of these helper viruses was not detected either by reverse transcriptase activity or by X-C plaque assay. Two F9tk--derived, G418-resistant transductant lines were superinfected with a second recombinant transducing virus that contains the herpes simplex virus thymidine kinase gene flanked by the Mo MuLV LTR. The frequency of transduction to yield clones able to grow in hypoxanthine/aminopterin/thymidine medium was similar to that of the parental F9tk- cells. These results suggest that the expression of the neomycin-resistance gene, linked to MoMuLV LTR in the transductant embryonal carcinoma cell clones, is due to a cisacting mechanism(s). PMID- 3857594 TI - A lethal deletion on mouse chromosome 7 affects regulation of liver-cell-specific functions: posttranscriptional control of serum protein and transcriptional control of aldolase B synthesis. AB - Steady-state levels of mRNAs were determined for the serum proteins albumin, alpha-fetoprotein (AFP), and transferrin, as well as for aldolase B in livers of newborn mice homozygous for a radiation-induced lethal deletion (c14CoS) in chromosome 7. Deficiencies in synthesis and secretion of the serum proteins as well as in activities of certain liver-specific enzymes characterize these homozygotes. The results of RNA dot and gel-blot hybridizations with the respective cloned cDNA probes showed a decrease to one-fourth of aldolase B mRNA levels in homozygous mutant livers compared to normal littermates, in contrast to normal levels of mRNA sequences for the three serum proteins in the mutants. Furthermore, the mRNA sequences were shown to be present as mature mRNA molecules in both mutant and normal littermate livers. We suggest that the deficiencies of liver-specific serum proteins and those of the enzymes caused by the lethal deletions around the albino locus on chromosome 7 of the mouse are due to different causes. In the case of the liver-specific enzyme examined here--i.e., aldolase B--control at the level of transcription or of message stability is affected in the homozygous deletion mutants, whereas the deficiencies of serum proteins are not reflected on the mRNA level and owe their origin to an effect on a posttranscriptional or translational level. These results lend further support to the assumption that the deleted portion of the genome includes genes concerned with the control and regulation of liver cell differentiation. PMID- 3857596 TI - Behavioral method for the treatment of idiopathic scoliosis. AB - Idiopathic scoliosis was treated by an automated portable posture-training device that incorporated precise behavioral principles and enabled therapeutic training to be given in the patients' normal environment throughout the entire day. Twenty one patient-years of training were completed with a group of 12 adolescent girls selected as being imminently likely to require a brace because of the way their spinal curves had been progressing. As an alternative to conventional brace therapy, patients found the posture-training device considerably less physically restraining and more cosmetically acceptable. Most patients wore it 23 hr per day for at least 1 year and adapted well to the constant physical and psychological presence of the instrument. For 10 patients, the outcome was entirely successful; they were discharged from this pilot study as satisfactorily corrected. Progression of the scoliotic curve was arrested; in fact, there was an average slight improvement in the Cobb angle (a measure of spinal curvature) as measured by x-ray radiography. PMID- 3857595 TI - Regulation of cellular function by products of lysosomal enzyme activity: elimination of human natural killer cells by a dipeptide methyl ester generated from L-leucine methyl ester by monocytes or polymorphonuclear leukocytes. AB - L-Leucine methyl ester (Leu-OMe) is a lysosomotropic compound that irreversibly removes natural killer cell (NK) function from human peripheral blood mononuclear cells. This effect was dependent on the presence of mononuclear phagocytes (M phi) or polymorphonuclear leukocytes (PMN) and was prevented by lysosomal inhibitors such as chloroquine or NH4Cl. When M phi or PMN were incubated with Leu-OMe, a product was formed that eliminated all NK function from mixed lymphocyte populations. This effect did not require the presence of M phi or PMN and was not prevented by lysosomal enzyme inhibitors. Thin-layer chromatography and mass spectral analysis revealed that this NK-toxic product was L-leucyl-L leucine methyl ester (Leu-Leu-OMe). When human lymphocytes were exposed to greater than 50 microM Leu-Leu-OMe for 15 min, all NK function was irreversibly eliminated. Other dipeptide methyl esters containing nonpolar L amino acids caused similar effects, but substitution with amino acids containing polar or charged side chains or with D stereoisomers produced compounds that had no toxic effect on NK. These findings indicate that M phi and PMN can regulate NK function by releasing the dipeptide condensation product Leu-Leu-OMe generated from Leu OMe via a lysosomally mediated mechanism. The data show that specific products of lysosomal enzyme activity may have potent effects on the function of adjacent cells. PMID- 3857597 TI - Capillary number and percentage closed in human diabetic sural nerve. AB - The number of capillaries per mm2, minimum intercapillary distance, number of endothelial nuclei per capillary section, and percentage of capillaries closed were evaluated in transverse sections of fascicles of 45 control and 36 diabetic sural nerves. All controls and patients were prospectively studied to ascertain their diabetic and neuropathic status. An index of pathology was introduced and it was found to provide a sensitive and reliable measurement of the presence and severity of neuropathy. The number of capillaries and minimum intercapillary distance of diabetic nerves were not significantly different from those of controls (P greater than 0.05). Diabetic nerves exhibited a small but statistically significant increase in the number of endothelial nuclei per capillary that was positively correlated with the severity of neuropathy. The most striking abnormality was the statistically significant increase in the percentage of capillaries closed in patients with neuropathy as compared to those without neuropathy and controls. Among diabetics, this percentage increased with the severity of neuropathy (P = 0.008). The two capillary abnormalities that have been demonstrated may play a role in the development of diabetic polyneuropathy. PMID- 3857598 TI - Identification and characterization of the human type II collagen gene (COL2A1). AB - The gene contained in the human cosmid clone CosHcol1, previously designated an alpha 1(I) collagen-like gene, has now been identified. CosHcol1 hybridizes strongly to a single 5.9-kilobase mRNA species present only in tissue in which type II collagen is expressed. DNA sequence analysis shows that this clone is highly homologous to the chicken alpha 1(II) collagen gene. These data together suggest that CosHcol1 contains the human alpha 1(II) collagen gene COL2A1. The clone appears to contain the whole gene (30 kilobases in length) and will be extremely useful in the study of cartilage development and for identifying those inherited chondrodystrophies in which defects occur in this gene. PMID- 3857599 TI - Effect of regional DNA methylation on gene expression. AB - The effect of DNA methylation on the transcriptional activity of the hamster adenine phosphoribosyltransferase (aprt) and the herpes thymidine kinase (tk) genes has been investigated. By using M13 constructs containing these gene sequences, specific segments of each gene were methylated in vitro by restriction fragment primer-directed second-strand synthesis using the substrate 2'-deoxy-5 methyl-cytidine triphosphate (dmCTP). These hybrid-methylated molecules were inserted into mouse Ltk- cells by DNA-mediated cotransfer. In all cases, the integrated sequences retained the in vitro-directed methylation pattern. The aprt gene was inhibited by CpG methylation in the 5' region but was unaffected by methylation at the 3' end or in adjacent M13 sequences. In contrast to this, DNA methylation in both the 5' promoter region and the 3' structural region of the tk gene had a strong inhibitory effect. This suggests that this modification may affect transcription by mechanisms that do not involve the direct alteration of recognition sequences for RNA polymerase. PMID- 3857600 TI - Replication initiator protein of plasmid R6K autoregulates its own synthesis at the transcriptional step. AB - The replication initiator protein of plasmid R6K preferentially repressed transcription initiated in vitro from the promoter of the initiator protein cistron. DNase I protection experiments revealed that the sequences in the region of the promoter recognized by the initiator protein partially overlapped the sequences of the same promoter recognized by RNA polymerase of Escherichia coli. Competitive DNase I protection experiments revealed that the initiator not only prevented the RNA polymerase from binding to the promoter sequence but also displaced RNA polymerase from preformed enzyme-promoter binary complexes. Thus, the initiator protein acts as a transcriptional repressor of its own cistron by either preventing RNA polymerase from binding to the promoter or by displacing RNA polymerase from promoter-enzyme complexes. PMID- 3857601 TI - P1 plasmid replication: multiple functions of RepA protein at the origin. AB - Replication functions of a bacteriophage P1 miniplasmid are carried on a 1.2 kilobase pair (kb) segment that can be subdivided into a 245-base pair (bp) replication origin and a 959-bp region that encodes a protein required for replication (RepA). The origin region contains five 19-bp direct repeats. By using primer extension and gene-fusion assays, we mapped the promoter of the repA gene within the repeated sequences and showed that the promoter is repressed by RepA. Regulation of RepA synthesis is apparently achieved by the binding of RepA to the repeat sequences. This regulation might be a key step in the replication control circuit, as we found that overproduction of RepA (from a foreign promoter) inhibits replication. Thus, in addition to being an autoregulated activator of replication, the protein also can have a negative regulatory role. PMID- 3857602 TI - Type IX collagen from sternal cartilage of chicken embryo contains covalently bound glycosaminoglycans. AB - Type IX collagen was isolated as a native protein from chicken embryo sternal cartilages and purified to homogeneity. Chondroitin and/or dermatan sulfate were bound covalently to one of the three polypeptide chains present in this protein containing collagenous and noncollagenous domains. Type IX collagen could be metabolically labeled with both radioactive sulfate and glycine. The protein containing either of these labels was sensitive to digestion by bacterial collagenase as well as chondroitinase ABC. Besides the glycosaminoglycans, type IX collagen contains asparagine-linked carbohydrate chains because the protein could be labeled with radioactive mannose and no glycosaminoglycans other than those mentioned above were present. The melting curve indicated that, in contrast to interstitial collagens, this molecule contains at least two disulfide-bonded collagenous domains with distinct thermal stabilities. PMID- 3857603 TI - Antifreeze protein genes are tandemly linked and clustered in the genome of the winter flounder. AB - We have used genomic Southern blots and restriction maps of genomic clones to examine the organization of the antifreeze protein multigene family in the winter flounder. The majority of the approximately equal to 40 antifreeze protein (AFP) genes in this fish are present in 7- to 8-kilobase-pair (kbp) elements of DNA, which are iterated as tandem direct repeats. Each repeat contains a single antifreeze protein gene that is 1 kbp long, and all of these genes have the same transcriptional orientation. Although the repeated elements are highly homologous, they do show some restriction site and restriction length polymorphisms. When flounder genomic DNA is digested with restriction endonucleases that do not cut within the repeats, most of the antifreeze protein genes reside in fragments that are at least 40 kbp long, representing clusters of five or more repeats in tandem. After genomic DNA is digested with Xba I or Xho I, these genes are present in fragments of exceptionally high molecular weight, suggesting that the clusters themselves are grouped together in the genome. The AFP gene locus may have evolved by gene amplification as recently as 10(6) years ago in response to the onset of the Cenozoic ice age. PMID- 3857604 TI - Isolation of stable preinitiation, initiation, and elongation complexes from RNA polymerase II-directed transcription. AB - Distinct RNA polymerase II transcription preinitiation, initiation, and elongation complexes can be formed in vitro on cloned adenovirus 2 DNA sequences containing the major late promoter. These transcription complexes are stable and can be rapidly isolated by gel filtration of HeLa whole cell extracts. In the absence of exogenous nucleotides and under appropriate salt conditions, a stable but transcriptionally incomplete preinitiation complex is formed. When this complex is incubated in the presence of adenosine or deoxyadenosine triphosphates, the beta-gamma phosphodiester bond is hydrolyzed, and RNA polymerase II joins the complex, thereby converting it into a stable initiation complex capable of forming (but prior to the formation of) the first phosphodiester bond. When this complex is isolated and incubated in the presence of all four nucleoside triphosphates, it is converted into an elongation complex that then permits the synthesis of phosphodiester bonds and the correct run-off transcript. A limiting transcription component is sequestered in the preinitiation complex. This factor is released upon elongation and can reassociate with new DNA templates during subsequent rounds of initiation. Therefore, class II genes do not appear to form activated transcription units stable for multiple rounds of transcription; rather, their transcriptional activity may be controlled in part by regulating the association of transcription factors at each initiation event. PMID- 3857605 TI - Pertussis toxin inhibition of chemotaxis and the ADP-ribosylation of a membrane protein in a human-mouse hybrid cell line. AB - When WBC264-9C cells are preincubated with pertussis toxin, chemotaxis is inhibited and ADP-ribosylation of a membrane protein with a subunit Mr 41,000 is observed. Both the inhibition of chemotaxis and the ADP-ribosylation by pertussis toxin display a similar time lag, temperature dependence, and pertussis toxin concentration dependence. Although the inhibition of chemotaxis and the ADP ribosylation of the membrane protein are qualitatively correlated, nearly complete inhibition of chemotaxis occurs when there is only partial ADP ribosylation of the membrane protein. Pertussis toxin-catalyzed ADP-ribosylation of the Mr 41,000 protein in WBC264-9C membranes is stimulated by GDP, GTP, and to a lesser extent by GMP; the nonhydrolyzable GTP analog guanosine 5'-[beta, gamma imido]triphosphate has no effect. WBC264-9C membranes have a high-affinity GTPase activity, which is partially inhibited in membranes from pertussis toxin-treated cells. Neither GTPase activity nor adenylate cyclase activity in membranes from WBC264-9C cells is affected by fMet-Leu-Phe, an attractant for these cells. Our results suggest that a guanine nucleotide binding protein may be involved in chemotaxis, but they do not indicate an involvement of adenylate cyclase. PMID- 3857606 TI - Differential scanning calorimetry of nuclei reveals the loss of major structural features in chromatin by brief nuclease treatment. AB - Differential scanning calorimetry revealed that chromatin melts in four distinct transitions in intact HeLa nuclei at 60 degrees C, 76 degrees C, 88 degrees C, and 105 degrees C. Calorimetry of whole cells was characterized by the same four transitions along with another at 65 degrees C, which was probably RNA. Isolated chromatin, however, melted in only two transitions at 72 degrees C and 85 degrees C. Very brief digestion of HeLa nuclei with either micrococcal nuclease or DNase I resulted in the conversion of a structure that melted at 105 degrees C to one that melted at 88 degrees C. Further digestion with micrococcal nuclease to the level of the mononucleosome did not result in any further substantial changes in either enthalpy or melting temperatures. In contrast, further DNase I digestion that resulted in cleavage within the nucleosome produced a pronounced shift in melting temperatures to broad transitions at 62 degrees C and 78 degrees C. PMID- 3857607 TI - Detection in extracts of bovine brain of lipophilic complexes of sulfate esters of cholesterol and beta-sitosterol. AB - Evidence indicating that there exist in bovine brains hitherto-unrecognized lipophilic conjugates of sterol sulfates is presented. These conjugates are soluble in nonpolar solvents and, when heated in methanol containing pyridine, yield polar sterol conjugates. These polar substances have the chromatographic mobility of sterol sulfates and are cleaved to free sterols when subjected to a solvolytic process known to be specific for sulfate esters. The brain sterols that have been identified in this way are cholesterol and beta-sitosterol. PMID- 3857608 TI - Initiation of transcription from each of the two human mitochondrial promoters requires unique nucleotides at the transcriptional start sites. AB - Promoters for transcriptional initiation on each strand of human mtDNA lie in close proximity in the displacement-loop region. Transcription initiates within these promoter elements, providing an opportunity to analyze the effects of nucleotide sequence changes on the efficiency and fidelity of this event within two delimited regions. Each promoter was individually altered by a site-directed mutagenesis approach and assayed in vitro for the ability to support transcription. The data clearly confirm the previous assignment of promoter functions for these elements and show that single nucleotide substitutions immediately upstream of the transcriptional start sites can abolish transcription. In all cases of decreased transcription, the correct site of initiation is maintained. Although the heavy-strand promoter and light-strand promoter are similar in primary sequence, they exhibit remarkably different sensitivities to base substitutions. PMID- 3857609 TI - Growth-dependent expression of multiple species of DNA methyltransferase in murine erythroleukemia cells. AB - Friend murine erythroleukemia cells were found to contain three distinct species of DNA (cytosine-5-)-methyltransferase (DNA MeTase) whose relative proportions were a characteristic function of the proliferative state of the cells. Rapidly proliferating cells contained a Mr 190,000 species of DNA MeTase (DNA MeTase III), whereas cells in the late logarithmic/early plateau phase of cellular growth contained two species of Mr 150,000 and 175,000 (DNA MeTase I and II); stationary phase cells contained primarily DNA MeTase I. The three species of DNA MeTase displayed structural similarities, as determined by analysis of partial proteolysis products, and have similar de novo sequence specificities in transmethylation reactions involving purified enzyme and prokaryotic DNA. The different relative proportions of the enzymes in cells under different growth conditions suggest that the three species of DNA MeTase fulfill different roles in processes leading to the perpetuation of DNA methylation patterns. PMID- 3857610 TI - Scavenger receptor-mediated recognition of maleyl bovine plasma albumin and the demaleylated protein in human monocyte macrophages. AB - Maleyl bovine plasma albumin competed on an equimolar basis with malondialdehyde low density lipoprotein (LDL) in suppressing the lysosomal hydrolysis of 125I labeled malondialdehyde LDL mediated by the scavenger receptor of human monocyte macrophages. Maleyl bovine plasma albumin, in which 94% of the amino groups were modified, exhibited an anodic mobility in agarose electrophoresis 1.7 times that of the native protein. Incubation of maleyl bovine plasma albumin at pH 3.5 regenerated the free amino groups and restored the protein to the same electrophoretic mobility as native albumin. The demaleylated protein suppressed 75% of the hydrolysis of 125I-labeled malondialdehyde LDL and greater than 80% of 125I-labeled maleyl bovine plasma albumin. The ability of the demaleylated protein to compete was abolished after treatment with guanidine hydrochloride. Although ligands recognized by the scavenger receptor typically are anionic, we propose that addition of new negative charge achieved by maleylation, rather than directly forming the receptor binding site(s), induces conformational changes in albumin as a prerequisite to expression of the recognition domain(s). The altered conformation of the modified protein apparently persists after removal of the maleyl groups. We conclude that the primary sequence of albumin, rather than addition of new negative charge, provides the recognition determinant(s) essential for interaction of maleyl bovine plasma albumin with the scavenger receptor. PMID- 3857611 TI - Purification of a vitamin K epoxide reductase that catalyzes conversion of vitamin K 2,3-epoxide to 3-hydroxy-2-methyl-3-phytyl-2,3-dihydronaphthoquinone. AB - An enzyme from bovine liver microsomes that catalyzes the reduction of vitamin K 2,3-epoxide to 2- and 3-hydroxy-2-methyl-3-phytyl-2,3-dihydronaphthoquinone was purified 1152-fold to apparent homogeneity. Microsomes were solubilized with 3-[3 cholamidopropyl)dimethylammonio]-1-propanesulfonate (CHAPS), and the enzyme was purified by chromatography on PBE-94 ion exchanger, hydroxylapatite, and DEAE cellulose, and then gel filtration on Sephacryl S-200. The homogeneity of the final preparation was established by polyacrylamide slab gel electrophoresis in the presence of sodium dodecyl sulfate. The molecular weight of the native enzyme is 25,000 and that of denatured enzyme is 12,400, which suggests that the enzyme is a dimer with identical subunits. No chromophoric cofactors are associated with the enzyme. Dithiothreitol and CHAPS are essential for activity, but high concentrations of glycerol reduces the activity. The enzyme is not inhibited by warfarin, a potent inhibitor of the vitamin K epoxide reductase, which catalyzes the conversion of vitamin K 2,3-epoxide to vitamin K. Evidence is presented indicating that the purified enzyme is not simply a fragment of the warfarin sensitive vitamin K epoxide reductase. PMID- 3857612 TI - 19-Hydroxylation of androgens in the rat brain. AB - Aromatization of androgens in the central nervous system is linked with sexual differentiation of the brain and, thus, determines the nature of sexual behavior and the control of gonadotropin secretion. The process of aromatization, as determined in the human placenta, proceeds through two successive hydroxylations at C-19, the products of which are then virtually completely converted via a third hydroxylation at C-2 to estrogens. We now report that in the rat brain, 19 hydroxylation of androgens greatly exceeds aromatization and the 19-hydroxy- and 19-oxoandrogen products accumulate in quantities 5 times greater than the estrogens. This relationship implies that the aromatization sequence in the brain is deficient in the terminal hydroxylase, and the process is distinct from that in other tissues. The function of 19-hydroxy- and 19-oxotestosterone in the central nervous system is unknown but, unlike the reduced or aromatized metabolites of the male hormone, these substances cannot be delivered from the circulation and their presence in the brain is totally dependent on in situ formation, making them logical candidates for modulators of neuronal functions. PMID- 3857613 TI - Mutations in the phosphoglucose isomerase gene can lead to marked alterations in cellular ATP levels in cultured fibroblasts exposed to simple nutrient shifts. AB - The generation of ATP in a hamster fibroblast mutant devoid of the enzyme phosphoglucose isomerase (PGI) has been studied and compared with that in the parental line, which is PGI+. Both cell lines could be maintained for 24 hr in hexose media devoid of L-glutamine. Under these conditions in mannose medium, both the parental line and the PGI mutant maintained high intracellular ATP levels. With glucose under the same conditions, the parental line was able to keep the ATP level high. In contrast, the mutant line lost most of its ATP pool after incubation with glucose; the ATP/ADP ratio fell about 80% after incubation in glucose medium. Addition of pyruvate, with or without glucose, preserved the ATP pool at high levels even in the mutant, as did the presence of L-glutamine. When the PGI mutant was maintained for 3-4 days in growth medium, containing 4 mM L-glutamine and 10% dialyzed calf serum, in which glucose was replaced by mannose, the UDP-glucose pool dwindled and mediated control of the hexose uptake system did not ensue, in contrast to results of the same exposure to glucose containing medium. PMID- 3857614 TI - A monoclonal antibody disrupting calcium-dependent cell-cell adhesion of brain tissues: possible role of its target antigen in animal pattern formation. AB - The Ca2+-dependent cell-cell adhesion system (CDS) is thought to be essential for the formation and maintenance of cell adhesion in a wide variety of tissues. Previous studies suggested that CDS has some cell-type specificity; for example, the monoclonal antibody ECCD-1 selectively recognizes CDS of certain epithelial tissues in mouse embryos but not nervous tissues. In the present study, we have obtained a monoclonal antibody, designated NCD-1, that disrupts connections between brain cells of mouse embryos. A series of experiments suggested that NCD 1 specifically recognizes CDS. We then determined the distribution of the NCD-1 antigen in various mouse tissues. NCD-1 reacted with cells of the following tissues and cell lines: nervous tissues from various sources, lens, striated muscle, cardiac muscle, glioma G26-20, adrenocortical tumor Y1, and melanoma B16. None of these cells reacted with ECCD-1, and the cells reactive with ECCD-1 did not react with NCD-1. There was also a class of cells that did not react with either ECCD-1 or NCD-1. These results suggest that cells in the body can be classified into at least three groups containing CDS of differing specificities. A map of the tissue localization of these different classes of CDS also suggests that the expression of cell-type-specific cell adhesion molecules in each tissue plays a crucial role in adhesion between the same cell types and segregation of different cell types in processes essential for animal morphogenesis. PMID- 3857615 TI - Ontogeny of hamster hemoglobins in yolk-sac erythroid cells in vivo and in culture. AB - During mammalian hemoglobin ontogeny, synthesis of the earliest globin chains (embryonic) is ultimately replaced by synthesis of globin chains (adult) characteristic of the fully formed organism. Elements of control of initiation, progression, and completion of globin-chain ontogeny are poorly understood. In search of a cell culture system in which ontogeny might be studied under closely controlled experimental conditions, we chose erythroid cells of the hamster embryo. First, the ontogeny of globin chains was defined in these yolk-sac derived erythroid cells from day 10 through day 13 in gestation. Amounts of individual embryonic and adult globin chains were quantified, as were their rates of synthesis. Next, analogous studies were performed on yolk-sac erythroid cells from day 10 in gestation (prior to the appearance of fetal liver) grown in culture for 3 days, corresponding to days 10-13 in vivo. The ontogenic program in culture was virtually identical to that in vivo. Approximately 70% of active globin synthesis was embryonic at day 10 in gestation (day 0 of culture), declining to 30% by day 13 in gestation (day 3 of culture). Whereas only trace synthesis of the adult non-alpha chains (beta major and beta minor) were initially observed, their combined active synthesis achieved a level of approximately 30% 3 days later both in vivo and in culture. Cell hemoglobin content and cell morphology were similar in both systems. We conclude that an ontogenic program for globin-chain synthesis exists in these primitive erythroid cells, overriding possible influences of cell environment. Further, we suggest that these cells in culture provide a means of examining cell mechanisms associated with globin-gene ontogeny under controlled experimental conditions. PMID- 3857616 TI - Morphogenetic rearrangement of injected collagen in developing chicken limb buds. AB - A fundamental question concerning the development of the extracellular matrix is what factors control the arrangement of collagen fibrils within a tissue and at the same time allow for the great diversity of geometric forms exhibited by collagen. In this report, we test the possibility that physical forces within the embryo serve to organize collagen fibers into regular patterns. In particular, we test the prediction that patterns of stress having this morphogenetic function are generated by cell traction, the contractile force exerted by cells to propel themselves. To study the effects of these mechanical forces on the extracellular matrix, type I collagen was fluorescently labeled and injected into developing chicken wing buds. When the injected limbs were allowed to develop and then examined histologically, the exogenous collagen was found incorporated within normal connective tissues of the wing. The labeled collagen became arranged according to its site of injection, forming parts of tendons, perichondria, cartilages, perineuria, and blood vessels. Since the injected collagen formed a gel within minutes of its injection, the subsequent incorporation of this performed collagen within organized structures cannot be explained in terms of molecular self-assembly or other mechanisms occurring during collagen deposition. These results demonstrate that, within developing tissues, patterns of forces exist that are capable of physically rearranging collagen and determining its long-range order. PMID- 3857617 TI - Silkmoth chorion gene families contain patchwork patterns of sequence homology. AB - The late chorion locus of Bombyx mori, containing paired members from two multigene families, has been analyzed in detail. The 15 gene pairs, irregularly spaced over 140 kilobases, exhibit an identical structure and a high overall sequence homology, while the flanking DNA (intergene regions) varies considerably. Segments of DNA of 150-300 base pairs from a reference gene pair were used as probes in a series of DNA hybridization experiments. It was found that the sequence variants within the locus are in a "patchwork" arrangement. Each gene pair contains a unique pattern of regions or "patches" that are highly homologous to the reference gene pair, interspersed with regions exhibiting less homology. We suggest that phenotypic selection is unable to account for the observed patchwork patterns; rather, sequence exchange between genes must be postulated. The nature of the DNA flanking the gene pairs would suggest that most of this sequence exchange is by means of gene conversion rather than unequal crossover events. PMID- 3857618 TI - Plasmid-induced "hit-and-run" tumorigenesis in Chinese hamster embryo fibroblast (CHEF) cells. AB - The Chinese hamster embryo fibroblast cell line CHEF/18 is readily transfected by plasmid DNA. In the present transfection studies with CHEF/18 cells, focus formation induced by plasmids containing the mutant human c-Ha-ras gene EJ was compared with that of control plasmids without the EJ insert. The focus-forming activity of the transfected plasmid J132, a recombinant of the Harvey murine sarcoma virus LTR and the normal human c-Ha-ras1 in pBR322, also was assessed. Foci were recovered after transfection with either pSV2gpt or pSV2neo at about 10% the frequency obtained with the EJ-containing plasmids, and J132 gave a similar frequency, all well above background obtained with salmon sperm DNA. Whereas foci from transfection with EJ-containing plasmids contained the EJ DNA, no plasmid DNA was detected in either tumorigenic or tumor-derived cells from foci transfected with pSVgpt, pSVneo, or J132. Evidence that genomic changes were induced by plasmid transfection is based on finding chromosomal aberrations in all expanded foci and tumor-derived cells examined. The results suggest the occurrence of "hit-and-run" tumorigenesis induced by transient plasmid transfection. PMID- 3857619 TI - Evidence for a prevalent dimorphism in the activation peptide of human coagulation factor IX. AB - We have independently isolated and characterized cDNA and genomic clones for the human coagulation factor IX. Sequence analysis in both cases indicates that threonine is encoded by the triplet ACT as the third residue of the activation peptide. This is in agreement with some earlier reports but in disagreement with others that show the alanine triplet GCT at this position. The discrepancy can thus be accounted for by natural variation of a single nucleotide in the normal population. Amino acid sequence analyses of activated factor IX from plasma samples of four individuals yielded two cases of alanine and two cases of threonine at the third position of the activation peptide. In factor IX from pooled plasma and in factor IX from a heterozygous individual, however, both alanine and threonine were found. Taken together, the findings show that a prevalent nondeleterious dimorphism exists in the activation peptide of human coagulation factor IX. PMID- 3857620 TI - Lack of evidence for skeletal abnormalities in offspring of mice exposed to ethylnitrosourea. AB - Using morphometrical methods, we investigated variation in the skeletons of more than 400 offspring of C57BL/6J and DBA/2J male mice that had received either a 250 mg/kg dose of the mutagen ethylnitrosourea or a solvent control. Sperm involved in the matings developed from cells in the spermatogonial stage at the time the animals were injected. Although variants were detected, differences in frequencies of gross abnormalities and minor variations in shape between treated and control groups were almost all nonsignificant. There were also no major differences in measures of variability within the groups of offspring from either the treated males or the control group. Additional examination of the skeleton for changes in the frequency of a series of nonmetrical variants also provided no evidence of differences between the treated and control groups that could be attributed to induced mutations. These results conflict with previous findings that ethylnitrosourea is a potent inducer of dominant skeletal mutations. PMID- 3857621 TI - Intron-mediated recombination may cause a deletion in an alpha 1 type I collagen chain in a lethal form of osteogenesis imperfecta. AB - To understand the nature of the mutation in type I collagen genes in cells from an infant with the perinatal lethal form of osteogenesis imperfecta (type II), we cloned and sequenced almost 2 kilobases of a normal alpha 1(I) collagen gene and the corresponding region of a mutant alpha 1(I) gene from cell strain CRL 1262. The mutant gene had undergone recombination between two non-homologous introns, which resulted in the loss of three exons coding for 84 amino acids in the triple helical domain. The deletion predicted the loss of amino acid residues surrounding and including the methionine at the junction between the CNBr peptides alpha 1(I) CB8 and alpha 1(I) CB3, a result confirmed by analysis of the cleavage peptides from the product of the mutant gene. Although large deletions from collagen genes are uncommon causes of the osteogenesis imperfecta type II phenotype, analysis of the de novo change in gene structure in this cell strain suggests that similar rearrangements may have occurred during the evolution of the large collagen genes. PMID- 3857622 TI - mRNA precursor splicing in vivo: sequence requirements determined by deletion analysis of an intervening sequence. AB - To define the extent of intervening sequence required for splicing higher eukaryotic mRNA precursors in vivo, we constructed deletions within the second intervening sequence of the human G gamma-globin gene that progressively approach the donor or acceptor splice sites. Most of the intervening sequence can be deleted with no effect on splicing. At the donor splice site, 6 bases of intervening sequence are sufficient for accurate and efficient splicing. At the acceptor splice site, 20 bases are sufficient for accurate and efficient splicing, and 16 bases are sufficient for accurate splicing but at a reduced level. However, 15 bases are insufficient for splicing at a significant level. The effect of deletions ending near the acceptor splice site is independent of whether an A-G dinucleotide is introduced into the acceptor splice site region by the deletion. PMID- 3857623 TI - The translocated c-myc oncogene of Raji Burkitt lymphoma cells is not expressed in human lymphoblastoid cells. AB - We hybridized Raji Burkitt lymphoma cells, which carry a t(8;14) chromosome translocation, with human lymphoblastoid cells to study the expression of the translocated cellular myc oncogene (c-myc) in the hybrid cells. In Raji cells the c-myc oncogene is translocated to a switch region of the gamma heavy chain locus (S gamma). Because of sequence alterations in the 5' exon of the translocated c myc oncogene in this cell line, it is possible to distinguish the transcripts of the translocated c-myc gene and of the normal c-myc gene. S1 nuclease protection experiments with a c-myc first exon probe indicate that Raji cells express predominantly the translocated c-myc gene, while the level of expression of the normal c-myc gene is less than 2% of that of the translocated c-myc gene. Somatic cell hybrids between Raji and human lymphoblastoid cells retain the lymphoblastoid phenotype and express only the normal c-myc oncogene. This result indicates that the activation of a c-myc oncogene translocated to a S region depends on the stage of B-cell differentiation of the cells harboring the translocated c-myc gene and not on alterations in the structure of the translocated c-myc oncogene. PMID- 3857624 TI - Complete primary structures of two major murine serum amyloid A proteins deduced from cDNA sequences. AB - cDNA clones encoding two major mouse serum amyloid A proteins, SAA1 and SAA2, were isolated from a liver cDNA library of the lipopolysaccharide-stimulated BALB/c mouse, and their nucleotide sequences were determined. The insert of the SAA2 cDNA clone contained 607 nucleotides with a 5' untranslated region of 36 nucleotides, a signal peptide region corresponding to 19 amino acids, a mature protein region corresponding to 103 amino acids, and a 3' untranslated region of 202 nucleotides. The SAA1 cDNA insert contained 549 nucleotides specifying a part of a signal peptide region, a mature protein region, and a 3' untranslated region. A comparison of the nucleotide and deduced amino acid sequences of SAA1 cDNA with that of SAA2 cDNA showed a high degree of homology: 95% nucleotide sequence homology in the coding region (91% amino acid sequence homology) and 90% homology in the 3' untranslated region. One of nine amino acid differences between SAA1 and SAA2 predicted from the cDNA sequences was located in a putative proteolytic cleavage site for amyloid A protein formation: SAA2 had the Thr-Met sequence in this site, while SAA1 had the Thr-Ile sequence. This suggests that SAA1, which does not deposit as amyloid A protein, is also potentially susceptible to putative proteolytic enzymes. In addition, as compared with mouse SAA2, human SAA1, monkey and mink amyloid A protein, mouse SAA1 had two unique substitutions, which may play a role in differential deposition of mouse SAA isotypes in amyloid tissues. PMID- 3857625 TI - Assignment of the gene coding for the T3-delta subunit of the T3-T-cell receptor complex to the long arm of human chromosome 11 and to mouse chromosome 9. AB - The gene encoding the 20-kDa glycoprotein of the T3-T-cell receptor complex (T3 delta chain) has been mapped to human chromosome 11 by hybridization of a T3 delta cDNA clone (pPGBC#9) to DNA from a panel of human-rodent somatic cell hybrids. In Southern blotting experiments with DNAs of somatic cell hybrids that contained segments of chromosome 11, we were able to assign the T3-delta gene to the distal portion of the long arm of human chromosome 11 (11q23-11qter). By use of a newly developed cDNA clone (pPEM-T3 delta) that codes for the murine T3 delta chain, the mouse T3-delta gene was mapped on chromosome 9. The importance of the T3-delta map position and its relationship to the other genes on the long arm of human chromosome 11 and to those on mouse chromosome 9 is discussed. PMID- 3857626 TI - Specificity analysis of mouse monoclonal antibodies defining cell surface antigens of human renal cancer. AB - Six mouse monoclonal antibodies (mAbs) defining separate systems of cell surface antigens of cultured human renal cancer were tested for reactivity with normal fetal and adult tissues and with neoplastic tissues. Five of the mAbs identified glycoproteins of Mr 160,000 (designated S4), Mr Mr 140,000 (F23), Mr 120,000 (S23 and S27), and Mr 115,000 (S22). The glycoprotein component of Mr 120,000 has been shown recently to be the adenosine deaminase binding protein (ADA-BP) and mAbS23 and mAbS27 define two distinct epitopes on ADA-BP. S22 was not detected on any normal fetal or adult tissues but was found on a subset of renal cancers. S4, F23, S23, and S27 defined distinct domains of the nephron: glomerulus (S4), proximal tubules (S4, F23, S23, and S27), and portions of Henle's loop (S23 and S27). mAbS4 also reacted with the interstitial matrix in the renal medulla and of other tissues, and mAbF23 reacted with fetal and adult fibroblasts. The S23 epitope of ADA-BP was expressed by placental trophoblasts and epithelial cells of breast, prostate, lung, and colon, whereas the S27 epitope was detected on a more limited range of cell types (trophoblasts and prostate epithelium). A panel of 20 renal cell carcinomas was typed for expression of these antigens; 7 phenotypes could be distinguished, with the S4+/F23+/S23+/S27+/S22+ or - phenotype (15 cases) being most common. The other antigenic system, V1, identified a heat stable antigen that was widely expressed on cultured cell types but showed a restricted pattern of reactivity in tissues. V1 expression was limited to the adrenal cortex, Leydig cells, and the theca of ovarian follicles, and to adrenal cortical carcinomas. PMID- 3857627 TI - Increased activity of the glucose cycle in the liver: early characteristic of type 2 diabetes. AB - The aims were to assess in the mild, lean, type 2 diabetics the activity of the hepatic futile cycle (glucose cycling) in the basal state and during an infusion of glucose and the overall contribution of futile cycling and the relative contributions of the liver and the periphery to excessive hyperglycemia during a glucose challenge. To determine hepatic futile cycling, we studied seven healthy controls (C) and eight mild, lean, type 2 diabetics with decreased oral glucose tolerance test and blood glucose of 123 +/- 4 mg/dl. Experiments included an equilibration period, followed by a 2-hr infusion of glucose at 2 mg/kg of body weight per min. In each subject, two such experiments were performed randomly with infusions of [2-3H]glucose or [3-3H]glucose to calculate, respectively, total glucose output or total glucose phosphorylation and glucose production or irreversible glucose loss. Futile cycling equals the difference between glucose turnover measured by the two tracers. In controls basal glucose production was 2.0 +/- 0.09 mg/kg per min, and it decreased by 75% during glucose infusion; futile cycling could not be detected. Plasma glucose increased by 30% and plasma C-peptide by 88%. In the diabetics total glucose output (2.41 +/- 0.17 mg/kg per min) was larger than glucose production (2.12 +/- 0.16 mg/kg per min), indicating a glucose cycle. During the glucose infusion, glucose production in the diabetics as well as in the controls decreased by 75% (to 0.6 mg/kg per min) despite higher than normal plasma glucose and C-peptide; futile cycling amounted to 0.6 mg/kg per min, which is half of the total glucose output; increase of glucose uptake was essentially only due to phosphorylation of glucose because irreversible uptake increased only marginally; and most glucose taken up by the liver during the glucose challenge reenters the blood stream without being oxidized or polymerized. These findings, when compared to our previous work in which controls were infused with glucose at 4 mg/kg per min, indicate that excessive hyperglycemia in the diabetics during glucose infusion is due to a decrease in irreversible glucose uptake (impaired phosphorylation and futile cycling) and to a decrease in suppression of glucose production. The relative contributions of the liver and periphery to hyperglycemia seem to be almost equivalent. The mechanism behind the increased glucose cycle activity is not clear; it may be due to a relative decrease of glycogen synthase or increase in glucose-6-phosphatase or both. PMID- 3857628 TI - O6-Alkylguanine-DNA alkyltransferase activity correlates with the therapeutic response of human rhabdomyosarcoma xenografts to 1-(2-chloroethyl)-3-(trans-4 methylcyclohexyl)-1-nitrosourea. AB - Immune-deprived female CBA/CaJ mice bearing xenografts of six different human rhabdomyosarcoma lines were treated with 1-(2-chloroethyl)-3-(trans-4 methylcyclohexyl)-1-nitrosourea (MeCCNU). Tumor responses were compared with levels of O6-methylguanine-DNA methyltransferase activity because of evidence indicating that repair of DNA interstrand cross-link precursors, mediated by the transferase, may be an important determinant of MeCCNU cytotoxicity. Levels of methyltransferase in tumor extracts were measured by determining the loss of O6 methylguanine from 3H-labeled methylated DNA. Five of the six tumor lines examined showed either no response to MeCCNU or regrowth after an incomplete response. In each instance, the extent of tumor regression correlated with the level of O6-methylguanine-DNA methyltransferase activity in tumor extracts. The single highly drug sensitive line was totally devoid of the activity. These results suggest that O6-methylguanine-DNA methyltransferase levels in human tumor cells may be a clinically useful predictor of sensitivity to the chloroethylnitrosoureas. PMID- 3857629 TI - An initiator of carcinogenesis selectively and stably inhibits stem cell differentiation: a concept that initiation of carcinogenesis involves multiple phases. AB - A concept of carcinogenesis was recently devised in our laboratory that suggests the development of defects in the control of cell differentiation is associated with an early phase of carcinogenesis. To test this proposal directly, the effects of an initiator of carcinogenesis (i.e., UV irradiation) on proadipocyte stem cell differentiation and proliferation was assayed. In this regard, 3T3 T proadipocytes represent a nontransformed mesenchymal stem cell line that possesses the ability to regulate its differentiation at a distinct state in the G1 phase of the cell cycle as well as the ability to regulate its proliferation at two additional G1 states that are induced by culture in growth factor deficient or nutrient-deficient microenvironments. The results establish that a low dosage of 254 nm UV irradiation selectively and stably inhibits the differentiation of a high percentage of proadipocyte stem cells without significantly altering their ability to regulate cellular proliferation in growth factor-deficient or nutrient-deficient culture conditions. Differentiation defective proadipocyte stem cells are demonstrated not to be completely transformed but to show an increased spontaneous transformation rate, as evidenced by the formation of type III foci in high density cell cultures. These data support the role of defects in the control of differentiation in the initiation of carcinogenesis. Other data, however, also suggest that additional cellular defects must be expressed for a cell to be completely initiated. These observations support a concept that the initiation of carcinogenesis involves multiple phases. PMID- 3857630 TI - Essential role of phospholipase A2 activity in endothelial cell-induced modification of low density lipoprotein. AB - Previous studies have established that incubation of low density lipoprotein (LDL) with cultured endothelial cells (EC) converts it to a new form (EC-modified LDL) that is now recognized by a specific receptor on macrophages (the acetyl LDL receptor) and is taken up and degraded 3-10 times more rapidly than native LDL (biological modification). The formation of EC-modified LDL depended on generation of free radicals with consequent peroxidation of LDL lipids and was accompanied by extensive hydrolysis of LDL phosphatidylcholine at the 2-position. The present studies show that p-bromophenacyl bromide, a site-specific irreversible inhibitor of phospholipase A2 activity, blocks this hydrolysis and, at the same time, the enhanced macrophage degradation. We show further that during EC modification the apoprotein B of LDL undergoes considerable modification and that this also is prevented by the phospholipase inhibitor. Finally, as reported previously, changes similar to those observed on incubation of LDL with EC can be induced by incubation in the absence of cells but in the presence of a sufficiently high concentration of Cu2+. This also is accompanied by hydrolysis of phosphatidylcholine at the 2-position and breakdown of apoprotein B. These changes are also inhibited by p-bromophenacyl bromide, suggesting the presence of a phospholipase A2 activity associated with LDL as it is isolated. A hypothesis is presented linking lipid peroxidation, phosphatidylcholine hydrolysis, and changes in the LDL apoprotein during EC modification. PMID- 3857631 TI - Natural history of restricted synthesis and expression of measles virus genes in subacute sclerosing panencephalitis. AB - Subacute sclerosing panencephalitis (SSPE) is a slow infection caused by measles virus in which several years separate recovery from typical acute measles and the development of a slowly progressive neurological disease. We have investigated replication of measles virus in brain tissue obtained after the onset of neurological disease and in the terminal phase. With a hybridization tomographic technique that combines in situ hybridization with macroradioautographic screening of large areas of tissue, we analyzed the spatial and temporal distribution of virus genes in vivo, using region- and strand-specific probes for the nucleocapsid and matrix genes. We show that early in the course of SSPE there is a global repression in the synthesis and expression of the genome. In the final stage of SSPE most infected cells still have depressed levels of plus- and minus-strand viral RNA and contain nucleocapsid protein but lack matrix protein. These findings provide further evidence for a unified view of slow infections of the nervous system, where the general constraints on virus gene expression provide an explanation for persistence of virus in the face of the host's immune response, and the slow evolution of pathological change. In the final phases of SSPE the more specific block in virus replication accounts for the cell associated state of the virus and the difficulty in virus isolation. PMID- 3857632 TI - Dopamine decreases conductance of the electrical junctions between cultured retinal horizontal cells. AB - Horizontal cells from the white perch were isolated by enzymatic treatment and trituration of the retina and were maintained in culture for 1-5 days. Overlapping pairs of horizontal cells were identified, and the two cells were recorded from simultaneously, using whole-cell patch clamp techniques. Electrical coupling between cells was determined by passing current pulses into one cell, the driver cell, while (i) recording voltage changes in the other, follower cell, or (ii) measuring current flow into the follower cell. Most cell pairs of the same morphological type were coupled electrically, with coupling coefficients often greater than 0.9. Junctional resistance was typically found to be between 20 and 60 M omega and junctional conductance was between 150 and 500 nS. After application of 1-microliter pulses of dopamine (200 microM) to coupled pairs of cells, the coupling coefficient fell to approximately equal to 0.1, junctional resistance increased to 300-700 M omega, and junctional conductance decreased to 15-30 nS. Recovery of coupling took, for most cell pairs tested, 8-15 min after dopamine application. The exogenous application of 8-bromo-cyclic AMP (0.5-1 mM) also caused uncoupling of horizontal cell pairs; however, neither isoprenaline nor L-glutamate altered coupling significantly. PMID- 3857633 TI - Fucose-containing glycolipids are stage- and region-specific antigens in developing embryonic brain of rodents. AB - A monoclonal antibody (against 7A antigen), raised against a homogenate of embryonic rat forebrain, marks the distribution of region- and developmental stage-specific cell-surface antigens in the mammalian central nervous system. In the mouse, immunocytochemical staining revealed that 7A antigen is expressed almost exclusively in germinal layers of the cerebral cortex beginning as early as day 11 of gestation and becomes undetectable by birth. The typical staining is seen at embryonic days 13-15, in which only the ventricular and the subventricular zones of the cerebral cortex are intensely labeled, whereas most other areas of the brain are unlabeled. Tissue culture studies indicate that the 7A antigen is localized at the plasma membrane. Molecular species possessing the antigen are identified as neutral glycolipids that contain the X-determinant trisaccharide: (formula; see text) This glycoconjugate is expressed in embryonic brains of many mammalian species (mouse, rat, rabbit, calf, and human) and may be a cell-surface component important in normal development of the central nervous system. PMID- 3857634 TI - Ceruloplasmin and metallothionein induction by zinc and 13-cis-retinoic acid in rats with adjuvant inflammation. AB - The induction of ceruloplasmin and metallothionein was investigated in rats with the early inflammatory phase of adjuvant arthritis. When examined at the peak of the acute inflammatory response, 5 days after adjuvant treatment, zinc given daily (2 mg/kg, intraperitoneally) increased serum ceruloplasmin levels by 2.0 times that found in nonarthritic rats and 1.2 times that found in non-zinc treated arthritic rats. 13-cis-Retinoic acid (160 mg/kg, orally) given daily increased serum ceruloplasmin 2.2 and 2.7 times that found in nontreated arthritic rats when given alone and with zinc (2 mg/kg, intraperitoneally), respectively. Reduction in the inflammatory response was measured by weight of the adjuvant-injected paw, 5 days after adjuvant was administered. The reduction in inflammation was 13 and 19-20% for 13-cis-retinoic acid and zinc, respectively, when given alone, and between 26 and 31% when the treatments were combined. Zinc markedly increased liver metallothionein levels whereas 13-cis retinoic acid was a much less potent inducer of the protein in liver. The results are discussed in light of the probable physiological roles of both ceruloplasmin and metallothionein. PMID- 3857635 TI - Immunologic alterations in monkeys with simian acquired immunodeficiency syndrome (SAIDS). AB - Levels of lymphocyte responsiveness to T- and B-cell-specific mitogens and expressions of Ia, T4, T8, and T11 surface markers were monitored during the course of Simian acquired immunodeficiency syndrome (SAIDS) in four Rhesus macaques that either died or became ill and survived. The monkey that died showed progressively suppressed responses to concanavalin A (Con A), phytohemagglutinin (PHA), pokeweed mitogen (PWM), and Staphylococcus aureus Cowan I strain (SAC) through the time of death (5 1/2 weeks). For the three animals that survived, the responses of peripheral blood mononuclear cell (PBMC) to the same mitogens were decreased significantly during the period 4-6 weeks after inoculation. Levels of Ia-bearing cells in the PBMC population were markedly reduced in the moribund monkey but were not significantly decreased in the three survivors. There was no significant change in the percentage of T11-bearing cells in any of the study animals. The ratio of T4- and T8-positive cells did not vary significantly during the 18 weeks of observation in any of the animals. The infected animals showed other evidence of immunosuppression including neutropenia, lymphopenia, and depletion of lymphocytes in lymph nodes. The animal that had progressive disease and death also had Kaposi-like lesions and staphylococcal septicemia. These results indicated that in vitro evidence of immunosuppression due to SAIDS appears within a few weeks after infection and this may progress in animals that die. PMID- 3857636 TI - Extent of morphological differentiation of human melanoma cells reflected by HLA DR antigen profiles. PMID- 3857637 TI - Collagen synthesis by human neuroblastoma cells. PMID- 3857638 TI - Intraluminal prostaglandin stimulation and bile salt inhibition of basal acid secretion in the instilled rat stomach. AB - To determine the effect of prostaglandin on acid secretion and the effectiveness of cytoprotection afforded by prostaglandins against bile salt damage, the stomachs of anesthetized rats were exteriorized and cannulated for determination of net acid output (H+) and electrical potential difference (PD). The stomachs were successively instilled with acid buffer, 5 mM and 15 mM sodium taurocholate (NaTC) with or without 3.3 X 10-6M 16, 16-dimethyl prostaglandin E2 (dmPGE2). With dmPGE2 present in the instillate, H+ was twice as large in the control period. Exposure to 5mM NaTC reduced H+ by 63% and abolished the stimulatory effect of dmPGE2. Subsequent exposure to 15mM NaTC depressed H+ further. In the absence of dmPGE2, NaTC reduced H+ to equivalent rates. The PD was unaffected by NaTC in the presence of dmPGE2 and lowered by 45% in the absence of dmPGE2. It may be concluded that 1) prostaglandins stimulate rather than inhibit basal H+ in vivo, and 2) prostaglandins provide weak protection against the ionic actions of conjugated bile salts instilled in the stomach. PMID- 3857639 TI - 6-Oxo-prostaglandin F1a production by guinea-pig skeletal muscle in vitro: the effects of oestradiol and progesterone. AB - Fragments of guinea-pig skeletal muscle produce four times as much 6-oxo-PGF1a as PGE and PGF. This production of 6-oxo-PGF1a was unaffected by relatively high concentrations of oestradiol-17B (100 micrograms/ml) but was increased four-fold in the presence of progesterone (500 micrograms/ml). In skeletal muscle homogenates, oestradiol (100 micrograms/ml) inhibited 6-oxo-PGF1a synthesis and this inhibition was enhanced in the presence of progesterone (500 micrograms/ml); at this concentration, progesterone had no effect on its own. Tamoxifen (100 micrograms/ml), a drug with anti-oestrogenic properties in humans, enhanced the inhibition of 6-oxo-PGF1a synthesis by oestradiol and by oestradiol and progesterone together, suggesting that oestradiol and tamoxifen may exert their effect by a similar mechanism in this experimental model. The significance of these observations is discussed. PMID- 3857640 TI - Prenatal hamster development following maternal administration of PGE2 at midterm. AB - The effects of PGE2 on embryonic and fetal development were studied in the golden Syrian hamster. Pregnant hamsters were treated on day 8 of gestation with either 0.2, 0.5, 0.75, or 1.0 mg/kg PGE2 delivered I.P. and the near term litters were compared to those of untreated and vehicle treated controls. Fetuses from the treated litters showed significantly higher frequencies of mortality, lower weights, malformations, and missing ossification centres in comparison to control litters. The results demonstrate that PGE2 is teratogenic in the hamster and the developing neural tube and the fetal skeleton are particularly susceptible to the effects of this teratogen. PMID- 3857641 TI - Prostaglandins in the human uterus: an interaction between endometrium and myometrium. AB - The interaction between the prostaglandin production of the human endometrium and myometrium has been further investigated using intact pieces of endometrium in homogenates of myometrium. There was an increase in the production of 6 oxo PGF, alpha when these tissues were incubated together, whereas there was no change in the production of PGE, PGF2 alpha or 13, 14 dihydro 15 - keto PGF2 alpha. This endometrial - myometrial interaction could have important implications in the pathogenesis of menorrhagia. PMID- 3857642 TI - Leukotriene D4 and phospholipase A2 release thromboxane A2 of different origin in the guinea pig lung parenchymal strip. PMID- 3857643 TI - Protective action of a thromboxane synthetase inhibitor in preventing extension of infarct size in acute myocardial infarction. AB - U-63,557A, a new selective thromboxane synthetase inhibitor, was evaluated for its ability to prevent the extension of myocardial infarct size. Left coronary arteries of male Sprague-Dawley rats (230 - 270 g) were acutely ligated, producing a consistent model of myocardial infarction (MI) in rats analyzed 48 hours later. Left ventricular free wall (LVFW), creatine kinase (CK) activity, and amino-nitrogen concentrations were assayed as indices of infarct size. U 63,557A was administered intravenously in two doses (4 and 8 mg/kg) with a split schedule (2 min post-ischemia and either 4 or 24 hrs later). Administration of the thromboxane synthetase inhibitor significantly reduced both myocardial CK and amino-nitrogen loss at a dose of 8 mg/kg, but it was only slightly effective at 4 mg/kg. Drug treatment significantly increased the percent LVFW spared; 27 +/- 3% (vehicle) vs 43 +/- 7% and 52 +/- 7% (8 mg/kg). U-63,557A is an effective agent in myocardial ischemia for limiting the extension of infarct size after acute coronary artery ligation. Previous studies of other thromboxane synthetase inhibitors showed effectiveness in the early stages of MI. This study shows an effect on true infarct size 48 hours post-ligation, and suggests that inhibition of thromboxane A2 plays an important role in the pathogenesis of ischemic damage in the myocardium. PMID- 3857644 TI - Central cardiovascular effects of the endoperoxide analogue U-46619 in rats. AB - Thromboxanes are abundantly present in the rat brain but their possible physiological functions in the brain are not known. The prostaglandin endoperoxide analogue U-46619 is a selective agonist of TxA2 receptors in many peripheral tissues. In the present study the central cardiovascular and ventilatory effects of U-46619 were investigated in rats. In conscious spontaneously hypertensive rats (SHR) U-46619 (1-100 nmol/kg i.c.v.) induced a strong dose-related increase in blood pressure but had no significant effect on heart rate. In conscious normotensive rats (NR) neither blood pressure nor heart rate was significantly affected. Furthermore, U-46619 (0.1-100 nmol/kg i.c.v.) had no significant effect on blood pressure, heart rate or ventilation in urethane-anaesthetised NR. The results demonstrate an increased sensitivity of SHR to TxA2. PMID- 3857645 TI - Depression in borderline patients: a prospective EEG sleep study. AB - The relationship between borderline personality disorder and primary major depression was studied prospectively using Schedule for Affective Disorders and Schizophrenia-Lifetime Version (SADS-L) interviews and electroencephalographic (EEG) sleep studies. Ten consecutively admitted borderline patients (a prospective sample), defined by Gunderson's Diagnostic Interview for Borderlines (DIB), underwent EEG sleep studies on two consecutive nights and were compared to previously reported samples of nonborderline depressed patients (defined by Research Diagnostic Criteria; RDC), normal controls, and DIB-defined borderline patients who had been referred "to rule out major depression" (a retrospective sample). EEG sleep data were analyzed visually and by automated techniques. Rapid eye movement (REM) latency values were similar in depressed and both borderline groups but significantly different from controls. Eighty-five percent of REM latency values in RDC major depressives were less than or equal to 65 minutes, compared to similar rates of 75% in the prospective sample of borderline patients and 65% in the retrospective sample, versus 35% for controls (chi 2 = 10.7, p less than 0.005). The REM latency in borderline patients did not vary with the severity of depression as measured by the Hamilton Rating Scale for Depression. In the prospective borderline sample, the major SADS-L diagnoses were chronic intermittent depression (five), current major depression (four) (two unipolar, two bipolar II), and labile personality (one). A convergence of nosologic and EEG sleep data is suggested, and supports the concept of a close relationship between criteria-defined borderline personality disorder and affective illness. PMID- 3857646 TI - Platelet 3H-imipramine binding in pregnancy and the puerperium. AB - Platelet 3H-imipramine binding was examined in a cross-sectional study of 70 Caucasian women in pregnancy and the early post-partum period, and in 23 nonpregnant women of childbearing age. Mood was also assessed in the pregnancy and post-partum sample. No significant differences in number of binding sites (Bmax) were found, but an increase in the equilibrium dissociation constant (Kd) was demonstrated at 5-7 days post-partum. PMID- 3857647 TI - Decreased high affinity 3H-imipramine binding in platelets of enuretic children and adolescents. AB - High affinity 3H-imipramine binding sites have been demonstrated in human brain and platelet membranes. It has been suggested that these binding sites selectively label serotonin transporter or uptake sites. Since imipramine has a beneficial effect in the treatment of nocturnal enuresis, the present study was carried out to investigate a possible association between alteration in 3H imipramine binding parameters in enuretics in comparison to nonenuretic control subjects. 3H-Imipramine binding to platelets was examined in 16 enuretic children and adolescents and compared to that in 22 healthy subjects of similar ages. A significant reduction was observed in the number of 3H-imipramine binding sites, while the dissociation constants (Kd) did not differ significantly in the platelets of enuretics as compared to controls. 3H-Imipramine binding values did not discriminate between familial and nonfamilial enuresis. These results may indicate that an alteration in the serotonin transporter in peripheral or central neuronal levels might be involved in the pathophysiology of nocturnal enuresis. PMID- 3857648 TI - Evidence for physiological effects of hypercortisolemia in psychiatric patients. AB - Although some psychiatric patients may have a disorder of hypothalamic-pituitary adrenal (HPA) function equal in character and severity to that noted in milder cases of Cushing's disease, it is generally accepted that such patients do not show Cushingoid stigmata. This conclusion, however, appears to be based more on clinical observation than on the results of formal scientific investigation. Since some depressed patients appear to overlap with Cushing's disease patients in incidence of such signs and symptoms as amenorrhea, hypertension, sleep disturbance, and insulin resistance, we were interested in examining whether a group of psychiatric patients showing evidence of marked nonsuppression might not also show physiological changes consonant with the effect of glucocorticoid excess. Nonsuppressors selected on this basis differed slightly from a matched suppressor control group on percentage of polyneutrophils and lymphocytes in blood. A discriminant function constructed from blood sample measurements of 12 factors and systolic/diastolic blood pressure successfully predicted suppressor or nonsuppressor status in the original and in an independent group of psychiatric patients. A comparison group of Cushing's disease patients was also successfully reclassified on the basis of the discriminant function. These data are interpreted as evidence for a subtle physiological effect of HPA dysregulation and suggest that behavioral symptom complexes may be similarly shaped by changes in this neuroendocrine system. The long-term functional significance of such changes is at present speculative. PMID- 3857650 TI - Normal pain sensitivity in patients with panic disorder. AB - The pain sensitivity of 18 patients with panic disorder and age- and sex-matched controls was assessed by signal detection analysis. The authors failed to demonstrate any difference in pain sensitivity between the two groups. The relationship between state anxiety, as assessed by the Spielberger scale, and pain in panic patients tended to be in the opposite direction from that in normals. PMID- 3857649 TI - Urinary catecholamines and mitral valve prolapse in panic-anxiety patients. AB - Free norepinephrine and epinephrine were measured in two consecutive 12-hour urine collections gathered during normal activity and sleep from 23 panic-anxiety patients and 9 normal subjects. Mitral value prolapse (MVP) was found in 7 of 20 patients who had echocardiograms. Mean nighttime norepinephrine and epinephrine excretion in panic-anxiety patients without MVP was significantly higher than that of control subjects, and was significantly higher than that of anxiety patients with MVP. In the daytime, all groups had higher catecholamine (CA) levels, but the differences between the groups were less pronounced. Medication significantly relieved symptoms and was associated with decreased CA levels. Elevated basal CA levels may characterize the subgroup of panic-anxiety patients who do not have MVP. PMID- 3857651 TI - Effects of antidepressant withdrawal on the dexamethasone suppression test. AB - Withdrawal of antidepressant medications may be a source of variance in dexamethasone suppression test (DST) results. We investigated this issue retrospectively through the serial analysis of postdexamethasone plasma cortisol concentrations and clinical severity in 15 patients and 9 control subjects before, during, and after antidepressant withdrawal. Postdexamethasone cortisol concentrations were significantly higher during the antidepressant withdrawal phase. Drug-withdrawal subjects also had an increased frequency of DST nonsuppression. Recent withdrawal of antidepressants requires further study as a possible source of variance for hypothalamic-pituitary-adrenal measures. PMID- 3857652 TI - Use of the Hamilton Rating Scale for Depression and the Carroll Self-Rating Scale in adolescents. AB - The relationship of clinicians' ratings of depression in adolescents to self rating is important to clinical research. The Hamilton Rating Scale for Depression (HRSD) and the Carroll Self-Rating Scale (CSRS) were compared in a study of 81 psychiatrically hospitalized adolescents. The correlation of CSRS and HRSD total scores in adolescents with melancholic major depression was 0.46, lower than the correlation reported in adults (0.80). Higher correlations were seen in females and in nonmelancholic and nondepressed subgroups. While the comparison of the two rating methods suggests some characteristics of depressed adolescents' presentation of their illness, it does not appear that the self rating instrument can be used as an alternative to clinicians' ratings. PMID- 3857653 TI - The Modified Hamilton Rating Scale for Depression: reliability and validity. AB - While the Hamilton Rating Scale for Depression (HRSD) has been the standard instrument for the assessment of the severity of depression for many years, this scale has a number of limitations. We developed the Modified Hamilton Rating Scale for Depression (MHRSD) to overcome some of these limitations and to enable paraprofessional research assistants to make reliable and valid assessments of depressive symptoms. The present study investigates the reliability and validity of the MHRSD. Interrater reliability among paraprofessional research assistants was excellent. The relationship between the MHRSD and expert clinician ratings on the MHRSD and the original HRSD was also high. Thus, the MHRSD appears to be a useful addition to the clinical researcher's assessment battery. PMID- 3857654 TI - Electrodermal recovery data on children of schizophrenic parents. AB - Half-amplitude recovery of electodermal responses is compared in children of schizophrenic parents (high-risk subjects) and children of depressed or normal parents. The results are dissimilar to those reported by Mednick and colleagues on a Danish high-risk sample. No significant differences emerged among the three groups in our study. Recovery did not differ according to sex or severity of illness of the schizophrenic parent. Recoveries of high-risk subjects separated from their homes were not shorter than recoveries of subjects who remained home. Recovery time recorded in childhood was unrelated to global adjustment in adolescence. PMID- 3857655 TI - The severity of psychiatric disorder: a replication. AB - A prior report documented the importance of diagnosis and psychotic symptoms as components of a global rating of severity of psychiatric disorder. The availability of 2-year followup data on 174 (80%) of the original 217 patients permits examination of the stability of components of a global rating. Menninger Health-Sickness Rating Scale (MHRS) scores again correlated with diagnosis and with psychotic symptoms; unlike the initial report, followup MHRS ratings were closely associated with a depression-neurosis factor and social role performance. Age, race, and sex were independent of severity, while low socioeconomic status correlated with severity of illness. PMID- 3857656 TI - Cholinergic REM sleep induction response correlation with endogenous major depressive subtype. AB - We compared central cholinergic responsiveness (using the latency to induction of rapid eye movement sleep after arecoline challenge as a response marker) in 90 subjects: patients with major depressive disorder (MDD) (n = 53), nonaffective psychiatric controls (n = 17), and normal controls (n = 20). MDD patients as a whole showed a supersensitive cholinergic response compared to nonaffective patients and normal subjects. Further analysis indicated a strong association between cholinergic supersensitivity and endogenous subtype of MDD, including a significant correlation with specific endogenous features such as distinct quality of mood, anhedonia, lack of reactivity, and agitation. Unlike rapid eye movement (REM) latency (a more conventional physiological marker), cholinergic sensitivity did not correlate with age or severity of illness but only with the presence of endogenous features. Previously described sleep physiological correlates such as REM latency and REM density of the first REM period also distinguished between endogenous and nonendogenous MDD. There was a statistically significant correlation between REM latency and arecoline REM induction response. PMID- 3857658 TI - Restoring the occlusal vertical dimension. PMID- 3857657 TI - Bulimia: a potentially fatal syndrome. PMID- 3857659 TI - The identification of juveniles by means of mucosal tattooing. PMID- 3857660 TI - Gingival tattoo. A hitherto undescribed mucosal pigmentation. PMID- 3857661 TI - Local tetracycline therapy of the periodontium during orthodontic treatment. PMID- 3857662 TI - Difficulties in locating the mesiobuccal canal in molars. PMID- 3857663 TI - An in vitro study of the effect of moisture on glass-ionomer cement. PMID- 3857664 TI - Pins and their relation to cavity resistance form for amalgam. PMID- 3857665 TI - Therapeutic condylar repositioning: fact or fancy? PMID- 3857666 TI - The recording and analysis of occlusal contacts: a comparison of conventional techniques and a new dye-coated occlusion wafer. PMID- 3857667 TI - Three dimensional premaxillary orthopedic technique for improved position and symmetry prior to cheiloplasty in bilateral cleft lip and palate patients. PMID- 3857668 TI - Successful third party management in the dental practice. PMID- 3857669 TI - A modified copper band matrix technique for large amalgam restorations. PMID- 3857670 TI - [Proposal for a uniform classification of electronic data processing in the dental field]. PMID- 3857671 TI - [Replantation of retained canines and related orthodontic alignment in the maxilla in general dental practice]. PMID- 3857672 TI - [Interpretation of radiographs]. PMID- 3857674 TI - [How good? A rebuttal to F. Daschner: "Hepatitis control in dental practice: disinfection sprays, inoculation or 70% alcohol?"]. PMID- 3857673 TI - [Implantometer. An original method for the exact determination of distortion in orthopantomograms (OPG)]. PMID- 3857676 TI - [Motivation problems in orthodontics]. PMID- 3857677 TI - [Clinical aspects, etiology and therapy of aphthae]. PMID- 3857675 TI - [Clinical aspects, radiology, and histology of an excised TPS-screw implant. II. Radiology]. PMID- 3857678 TI - [Interpretation of radiographs]. PMID- 3857679 TI - [Criteria for the selection of office computers (I)]. PMID- 3857680 TI - [Mobile central storage]. PMID- 3857681 TI - [Effect of in vivo locally applied fluoride preparations. 2: Studies on the comparisons of various application methods and formulations]. PMID- 3857682 TI - [Treatment of the anxious patient with hypnosis]. PMID- 3857684 TI - [Recall system]. PMID- 3857683 TI - [The contribution of the dental assistant to an individual's oral hygiene]. PMID- 3857685 TI - [Accounting in orthodontic practice (V)]. PMID- 3857686 TI - [Toothpastes]. PMID- 3857687 TI - [Bottle cap opener for the alginate mixing container: a useful aid in the office]. PMID- 3857688 TI - [Radiography for dental assistants. Positioning: no book with seven seals--or "Give me a firm point"]. PMID- 3857689 TI - [Information Day in Vordingborg]. PMID- 3857690 TI - [Prevention of rickets--also protection for undisturbed tooth development]. PMID- 3857691 TI - [Telephone manners (careful words and good will on hanging up)]. PMID- 3857692 TI - [Accounting in orthodontic practice (VI)]. PMID- 3857694 TI - [Which diseases are revealed by the tongue?]. PMID- 3857695 TI - [Possibilities for the preparation of an aid for a clarinet player after complete tooth loss in the upper and lower jaw]. PMID- 3857693 TI - [Origin and properties of various radiations (I)]. PMID- 3857696 TI - The clinical history of 402 teeth with Class II amalgam restorations. PMID- 3857697 TI - A technique for placing multiple composite restorations. PMID- 3857698 TI - [Precious metals and nonprecious metals in fixed prostheses]. PMID- 3857699 TI - [Dental hygiene and motivation of 250 subjects in a prenatal clinic]. PMID- 3857700 TI - [Dental composites in the premolar and molar region, 1984]. PMID- 3857701 TI - Synchronization of rapid globin expression in murine erythroleukemic cells. AB - The addition of butyric acid (BA) to murine erythroleukemia cells (MELC) produces the expression of primarily A and E2 hemoglobins while DMSO incubation produces the expression of primarily A hemoglobin. Preincubation of MELC with DMSO followed by BA induction accelerates the expression of hemoglobins in a synchronous manner, yielding the preferential synthesis of alpha and y globins, and E2 hemoglobin. PMID- 3857702 TI - The bootstrap and identification of prognostic factors via Cox's proportional hazards regression model. AB - This paper describes the use of the bootstrap, a new computer-based statistical methodology, to help validate a regression model resulting from the fitting of Cox's proportional hazards model to a set of censored survival data. As an example, we define a prognostic model for outcome in childhood acute lymphocytic leukemia with the Cox model and use of a training set of 224 patients. To validate the accuracy of the model, we use a bootstrap resampling technique to mimic the population under study in two stages. First, we select the important prognostic factors via a stepwise regression procedure with 100 bootstrap samples. Secondly we estimate the corresponding regression parameters for these important factors with 400 bootstrap samples. The bootstrap result suggests that the model constructed from the training set is reasonable. PMID- 3857703 TI - Increased leucocyte alkaline phosphatase and transcobalamin III in chronic myeloid leukaemia associated with lithium therapy. AB - A 38-year-old woman developed chronic myeloid leukaemia after 2 years of lithium carbonate therapy. A peculiar feature of her leukaemia, as well as of the 5 patients previously reported in whom CML has developed in the course of lithium therapy, was the unusually high degree of granulocyte maturation manifested in normal leucocyte alkaline phosphatase (LAP) score and, in 1 case, selective increase of transcobalamin III. Although a cause and effect relation between lithium therapy and CML has not yet been established, in view of the stimulatory effect of lithium on granulocyte proliferation, such treatment should be avoided in patients with established myeloproliferative disorders, or in patients at high risk of developing leukaemia. PMID- 3857704 TI - Prognostic value of the determination of serum lactic dehydrogenase and its isoenzymes in children with acute lymphoblastic leukaemia. AB - Serum total lactic dehydrogenase (LDH) levels have been found to be significantly higher in 21 children with acute lymphoblastic leukaemia (ALL) at initial diagnosis than the values of 12 children who achieved remission. The mean value of serum LDH levels in patients with high-risk factors was 2347 +/- 1490 U/ml (range 430-5460 U/ml), while in patients at standard risk it was 652 +/- 385 U/ml (range 110-1320 U/ml). The serum LDH values were above 1320 U/ml in 70% of the 13 children with high-risk factors. The serum isoenzyme patterns were analyzed in 17 of these children at the initial diagnosis. Although LDH-3 and LDH-2 were prominent at the time of diagnosis; LDH-2 and LDH-1 were the predominant isoenzymes in remission. The highest concentrations of LDH-3 were observed in the high-risk group at diagnosis and the ratio of LDH-3 to LDH-2 exceeding 1.0 was found in children who had high-risk factors, but not in any patients in the standard risk group. PMID- 3857705 TI - Evaluation of neutrophil alkaline phosphatase (NAP) activity: untreated myeloid leukaemia, lymphoid leukaemia and normal humans. AB - Neutrophil alkaline phosphatase (NAP) activity was estimated in 50 healthy humans and 89 patients with leukaemia; 41 cases of acute myeloid leukaemia (AML), 22 cases of chronic myeloid leukaemia (CML), and 26 cases of lymphoid leukaemia (LL). The groups proved to be separate entities (p less than 0.000 25) and the differences between the groups were statistically significant (p less than 0.001) except for the difference between AML and LL. The 95% confidence limits for normal NAP scores were 15.0-132.6. Decreased scores were demonstrated in 73% of CML, 7% of AML but never in LL patients. Increased scores were found in 37% of AML, 31% of LL but never in CML patients. Evaluation of the distribution of the single cell NAP activity (negative, weak positive, strong positive) showed decreased activity in 77% of CML, 15% of AML but never in LL patients. Increased activity was demonstrated in 63% of AML, 54% of LL and 9% of CML patients. The evaluation of single cell activity is a time-saving method, which furthermore proved superior to the scoring method in discriminating between the types of leukaemia investigated. PMID- 3857706 TI - Murine retroviral vectors and human gene therapy. PMID- 3857707 TI - [Significance and general application of tissue conditioning]. PMID- 3857708 TI - [COE-Comfort for lower complete dentures]. PMID- 3857709 TI - [Tissue conditioning with Visco-gel in upper complete dentures]. PMID- 3857710 TI - [Tissue conditioning using the Hydro-Cast system]. PMID- 3857711 TI - [2 cases of advanced periodontal disease--1]. PMID- 3857712 TI - [Toothbrushing before and after prosthodontic management]. PMID- 3857713 TI - [My approach to forced eruption]. PMID- 3857714 TI - [Local administration of amphotericin B (fungizone syrup) in oral candidiasis]. PMID- 3857716 TI - General dentistry and periodontics. PMID- 3857715 TI - [Anti-inflammatory effect of piroxicam (Baxo) in orodental surgery]. PMID- 3857717 TI - Case of the month. Mucocutaneous bulla. PMID- 3857718 TI - How to help your tax preparer save you money. PMID- 3857719 TI - I like nervous patients. PMID- 3857720 TI - Making good on bad checks. PMID- 3857721 TI - [Prostaglandin therapy in newborn infants with a Botalli duct-dependent circulation]. AB - 21 patients are described with either the pulmonary or the systemic circulation dependent on the patency of the ductus arteriosus. Treatment with Prostaglandin type E (PGE) was instituted to improve tissue oxygenation. Special PGE 2. It is concluded that PGE can be life-saving in critically ill newborns but that complications, especially episodes of apnoea, are frequent. Little is known about the possible sequelae of long-term oral PGE 2-treatment. PMID- 3857722 TI - The HLA polymorphisms in Beijing Chinese. PMID- 3857723 TI - HLA polymorphisms in Saudi Arabs. AB - The HLA-A, -B, -C, -DR, Bf and GLO phenotypes of 109 unrelated Saudi Arab males have been determined. HLA-A and -B antigen frequencies were compared with data reported for European Caucasoids and various Arab populations. Most similarities in antigen frequencies were seen between Saudi Arab and Iraqi populations. A high frequency of Bw50 was observed in Saudi Arabs. The frequencies of HLA-DR antigens in Saudi Arabs were compared to European Caucasoids. HLA-DR7 was at high frequency in Saudi Arabs. Linkage disequilibria between alleles of HLA loci was examined. Many instances of previously reported antigen associations were seen in Saudi Arabs, together with a number of associations which have not been described elsewhere. HLA-Cw6-Bw50-DR7-BfS0.7 is suggested as being a common haplotype in Saudi Arabs. PMID- 3857724 TI - Measurement of the ratio of primary to total bile acids in serum by enzymatic fluorometric microassay and its clinical significance in patients with liver disease. AB - An enzymatic fluorometric microassay using 3 alpha- or 7 alpha-hydroxysteroid dehydrogenase was devised to determine serum total or primary bile acids. The present microassay using 50 microliter of a serum sample was run as a two-step method; the first step is the reaction of substrates with NAD+ and the hydroxysteroid dehydrogenase to produce as much NADH as possible in the incubation system and the second step is that of NADH with resazurin coupled with 1-methoxy phenazinemethosulfate to produce fluorescent resorfin. The assay is specific for 3 alpha- or 7 alpha-hydroxy bile acids, sensitive (a detection limit of 1.5 microM with a linear range of 1.5-80 microM), reproducible (CV = less than 5%) and inexpensive. As measured by this microassay, the ratio of serum primary to total bile acids (P/T ratio) in 10 normal subjects was 62.1 +/- 0.7% and was significantly elevated in the early phase of acute hepatitis (p less than 0.01), followed by return to the normal level after 4 weeks. PMID- 3857725 TI - Genetic and environmental factors in the development of Behcet's disease. AB - Analysis of HLA antigens and case control study were performed in 50 patients with Behcet's disease. Frequency of HLA-Bw51 was significantly increased in the patients (52.0%) as compared to that in the control subjects (16.0%). In case control study, the incidence of tonsillitis, and use of public bath and a privy were more frequently seen in the patients than in the controls. The patients were frequently exposed to agricultural chemicals before onset of the disease. Daily ingestion of vegetable salad and milk was less frequent in the patients than in the controls. Heterogeneity of Behcet's disease and results of multivariate analysis for selected variables were discussed. PMID- 3857726 TI - [Membrane transport research in a lesion of the maxillodental system caused by yellow phosphorus]. PMID- 3857727 TI - [Ultrasonic method for vital amputation of the pulp]. PMID- 3857728 TI - [Indices of the completion of phagocytosis by neutrophils in the peripheral blood of periodontitis and periodontosis patients]. PMID- 3857729 TI - [Use of thymalin in treating periodontitis patients]. PMID- 3857730 TI - [Treatment of microcirculatory disorders in periodontitis by d'arsonvalization]. PMID- 3857732 TI - [Use of a helium-neon laser in facial pains]. PMID- 3857731 TI - [Combined treatment of trigeminal neuralgia by lidocaine and mumie electrophoresis]. PMID- 3857734 TI - [Quantitative research on the cytological dynamics of the healing of suppurative facial and neck wounds]. PMID- 3857735 TI - [Use of a chloracetophos ointment in the combined treatment of acute odontogenic inflammatory processes of the maxillofacial area]. PMID- 3857733 TI - [Bacterial microflora in acute suppurative odontogenic diseases of the maxillofacial area]. PMID- 3857736 TI - [Comparative characteristics of nonspecific resistance factors in chronic parenchymatous parotitis and Sjogren's syndrome]. PMID- 3857737 TI - [Rare case of Bechterew's disease with a lesion of the temporomandibular joints]. PMID- 3857738 TI - [New tasks in the further improvement of dental care for the population]. PMID- 3857739 TI - [Prevention of complications after tooth extraction]. PMID- 3857741 TI - [Characteristics of the structure of the facial skeleton in open bite]. PMID- 3857740 TI - [Immunostimulants in the combined treatment of patients with odontogenic abscesses and phlegmon]. PMID- 3857742 TI - [Effect of masticatory efficiency on gastric secretory function]. PMID- 3857743 TI - [Symmetrographic analysis of the hard palate in orthognathic bite, narrowed dental arches and open bite]. PMID- 3857744 TI - [Prediction of the psychoemotional state of younger schoolchildren during dental treatment]. PMID- 3857745 TI - [Electrical resistance and rheographic indices of the periodontium in children]. PMID- 3857746 TI - [Hemodynamic changes in the periodontal tissues of children treated for alveodental stretching]. PMID- 3857748 TI - [Congenital dilatations of the parotid excretory ducts in newborn infants]. PMID- 3857747 TI - [Use of a helium-neon laser in treating oral mucosal diseases in children]. PMID- 3857749 TI - [Morphological characteristics of distraction of the mandible in an experiment]. PMID- 3857750 TI - [Results of the analysis of lateral teleroentgenograms of the head before and after orthodontic treatment of prognathic (distal) bite using a lidase preparation]. PMID- 3857752 TI - [Status and trends in the development of periodontal care in the Ukrainian SSR]. PMID- 3857751 TI - [Analysis of morbidity with temporary loss of work capacity based on data from the surgical department of a provincial dental polyclinic]. PMID- 3857753 TI - [Experience in conducting a practical class in the teaching of internal diseases to dental students]. PMID- 3857756 TI - [Wegener's granulomatosis]. PMID- 3857754 TI - [Treatment of periodontitis by electrophoresis]. PMID- 3857755 TI - [The physician's procedure in performing local treatment of periodontal diseases]. PMID- 3857757 TI - [Effect of helium-neon laser radiation on the course of temporomandibular joint arthritis and arthrosis]. PMID- 3857758 TI - [Foreign bodies in the maxillofacial area]. PMID- 3857759 TI - [Treatment characteristics of the distal bite in adolescents]. PMID- 3857761 TI - [Diagnostic and therapeutic problems with root fragments in the maxillary sinus]. PMID- 3857760 TI - [Comparative characteristics of the adhesiveness of filling materials based on scanning electron microscopic data]. PMID- 3857762 TI - [Traumatic tooth loss. 2: Impairment of phonetics and mastication due to traumatic tooth loss as indication of the degree of physical handicap]. PMID- 3857763 TI - [Development of the apical base in the mandible during canine tooth eruption- teleradiologic longitudinal study in patients treated with functional regulators]. PMID- 3857764 TI - [Effect of film focus distance on selected distance and angle data in teleradiography of the head]. PMID- 3857765 TI - [Gingival recession--etiology, clinical aspects and therapy]. PMID- 3857766 TI - [Endoscopy of the maxillary sinus. Experiences in the Otorhinolaryngology Clinic at the Karl-Marx-University, Leipzig, 1978 to 31 July 1983]. PMID- 3857767 TI - [Holographic interferometry studies as a supplementary possibility to instrumental occlusal analysis]. PMID- 3857769 TI - Treatment of rhegmatogenous retinal detachment uncomplicated by massive periretinal proliferation by pars plana vitrectomy. AB - Pars plana vitrectomy was used to treat rhegmatogenous retinal detachment in 12 cases of macular hole and 27 cases with incomplete massive periretinal proliferation. The surgical success rate and visual outcome are discussed. PMID- 3857768 TI - Underlying medical conditions in young patients and ethnic differences in retinal vein occlusion. AB - Eighty-seven patients with retinal vein occlusion were investigated for the prevalence of associated conditions, and divided in two groups, young (less than 50 years, n = 40) and an older group (greater than 50 years, n = 47). Young patients had a highly significant decreased prevalence of hypertension compared to the older group (27 per cent versus 62 per cent: P less than 0.001), with hyperlipidaemia being the predominant underlying condition (35 per cent). Four young female patients presenting with retinal vein occlusion were on the contraceptive pill. In the majority of young patients (60 per cent) an underlying medical condition could be identified. Striking ethnic differences in the occurrence of retinal vein occlusion have also been observed in a total of 214 patients referred without prior selection in two major ophthalmological centres over a four year period. Only 3 per cent of patients with retinal vein occlusion were Asian and 2 per cent of West Indian origin. In particular, no West Indian patient has been seen with the central form of venous occlusion. We conclude that hyperlipidaemia, and not hypertension, is the predominant associated medical condition in young patients and that other aetiological factors including the contraceptive pill may be found. Marked ethnic differences have also been observed which may give further insight into the exact aetiology of retinal vein occlusion. PMID- 3857770 TI - Human vitreous fibres and vitreoretinal disease. AB - Adult human vitreous structure was studied by dark-field Slit Microscopy in fresh, unfixed preparations of vitreous dissected off the sclera, choroid and retina. Macroscopic fibres oriented in an antero-posterior direction were detected. These fibres inserted at the vitreous base and oriented towards the macula. Significant alterations were observed in this vitreous structure with advanced age. The role of these structures in vitreo-retinal disease is discussed. PMID- 3857771 TI - Electrophysiological responses after vitrectomy and intraocular tamponade. AB - Earlier reports of changes in the electroretinogram (ERG) following intravitreal liquid silicone in animal eyes have been conflicting. There is little information on the effects of vitrectomy and intravitreal tamponade by gas or liquid silicone on retinal function in humans. The effects on retinal function of intraocular tamponade by liquid silicone (1,000 cs) or SF6 gas (20 per cent)/mixture were studied in a series of consecutive patients undergoing vitrectomy for recent rhegmatogenous retinal detachment. Patients without retinal detachment requiring vitrectomy served as controls. Serial electroretinography was performed immediately preoperatively, postoperatively and subsequently over a period of 6 months. In the early postoperative period there was a reduction of both a- and b waves through these recovered progressively in all the patients. The recovery of the ERG was accelerated by the absorption of the gas or by the removal of the liquid silicone. The results of our study indicate that the initial depression of the ERG is due to vitrectomy and subsequent recovery occurs even in the presence of intraocular gas or liquid silicone. It is suggested that the relative reduction of the amplitude of a- and b-waves in the study patients is due to the insulating effect of the tamponading agent and that neither intraocular gas nor liquid silicone adversely affects retinal function. PMID- 3857772 TI - Silicone tube and gutter in advanced glaucoma. AB - We performed a new drainage operation in 20 cases of advanced glaucoma. A silicone tube was inserted into the anterior chamber and its outer end buried under an encircling gutter. After a mean follow up of 10 months, in 13 cases (65 per cent) the eye was comfortable, the intraocular pressure less than 25 mm Hg, and the tube was in a satisfactory anatomical position. The authors recommend this procedure rather than destructive operations in eyes with advanced uncontrolled glaucoma. PMID- 3857773 TI - Pupilloplasty in aphakic and pseudophakic pupillary block glaucoma. AB - Pupilloplasty has given positive results in 40 out of 45 cases of aphakic and pseudoaphakic secondary block glaucoma after one or two laser sessions. Since we first applied this method we have arrived at the following conclusions: Pupilloplasty must be repeated whenever the reformation of the anterior chamber achieved with the first laser session does not persist. [In our instances the anterior chamber was successfully reformed at the first session and maintained its depth in 30 of the 40 cases. In the remaining 10 cases a second pupilloplasty proved necessary 2 to 5 days after the first session (rate of success: 88 per cent)]. In the cases in which the anterior chamber was reformed intraocular pressure showed certain fluctuations before stabilising at the desired levels. The intensity of the laser beam applied in cases of pupillary block with pseudophakic anterior chamber should be relatively lower than the intensity used in aphakic cases. In order to prevent corneal burns in cases with shallow or completely flat anterior chambers the first two laser applications should be of a lower beam intensity than usual. PMID- 3857774 TI - Clear-cornea trabeculectomy. AB - In most reported series of trabeculectomy results a failure rate of 10 to 15 per cent is quoted. It seems likely that some, perhaps the majority of these failures are due to conjunctival or tenon scarring. If a method of trabeculectomy could be devised so that the conjunctiva and tenon's capsule were not injured, the failure rate might be reduced. The clear-cornea approach has been developed with this in mind. The rational basis, the surgical method and results in a small number of cases will be described. PMID- 3857775 TI - Cyclosporin A in the treatment of posterior uveitis. AB - Cyclosporin A was used in nine patients with severe refractory posterior uveitis. Four patients had Behcet's disease, one had sarcoidosis, one had HLA B27 related arthritis and uveitis and three had idiopathic retinal vasculitis. The drug had beneficial ocular effects in all patients in the early stages of treatment with an improvement in the visual acuity and reduction in the severity of inflammation. The relapse rate and need for additional steroids were reduced in all patients. However, renal function deteriorated in seven patients to such an extent that the dose of Cyclosporin A had to be reduced with consequent relapse of uveitis. PMID- 3857776 TI - Day surgery management of senile ptosis. AB - Corrective surgery for senile ptosis under local anaesthesia as day cases was carried out on 162 patients. All had 10 to 14 mm resection of the levator complex with an attached 2 mm strip of tarsal plate, always via a conjunctival approach. If indicated, simultaneous blepharoplasty was also performed. To simplify the surgical and parasurgical management, the author has progressively introduced modifications in the techniques of local anaesthesia, and in the surgical technique. These enable clear and clean isolation of the various tissue planes. The local anaesthesia including facial nerve block is given at least 30 minutes pre-operatively to prevent blepharospasm. Orbital compression is applied to achieve orbital decongestion, and an hypotensive avascular surgical field. This coupled with the use of microsurgical instruments for surgery under 3 times spectacle magnification allows proper delineation of surgical planes. The average surgical time is 20 minutes. Patients are allowed home within 2 hours of surgery, are seen for first dressing at 48 hours, and then for suture removal on the 7th post-operative day. There have been no corneal or other complications in any patient. Suboptimal cosmetic results in 2 patients were corrected by further surgery under local anaesthesia as day cases. PMID- 3857777 TI - Neodymium-YAG laser in ophthalmic practice--principles and early experience. AB - We show our early experience with the Q Switched Neodymium-YAG Laser. Selected cases from the clinical spectrum of patients treated over nine months are discussed with regard to technique, results and possible complications. We feel that the YAG Laser will make an important contribution to ophthalmic care but further research and assessment are required before its full value and safety are ascertained. PMID- 3857778 TI - Correlation of ocular rigidity and blue sclerae in osteogenesis imperfecta. AB - A previous study of 16 patients and 16 controls had indicated that the mean ocular rigidity value was significantly lower in Osteogenesis Imperfecta (OI) patients than in normal controls (p = 0.001). These preliminary results have been confirmed in the present study of 46 patients and 53 controls where the difference in mean ocular rigidity between the patient and control group was statistically significant at the p less than 0.0001 level. Of particular interest was the inverse correlation between blueness of sclera and ocular rigidity in patients with OI. The establishment of such a relationship depended upon the availability of a larger sample size than had previously been examined. PMID- 3857779 TI - A study of the prevalence of eye disease in the elderly in an English community. AB - A randomly selected age-stratified sample of subjects 76 years of age and older living in the Melton Mowbray area was examined by an ophthalmologist and an ophthalmic optician. Over a two-year period 484 subjects were examined, with a response rate of 71.5 per cent. The prevalence rates for the major sight threatening conditions in the elderly were determined: senile cataract 46.1 per cent, senile macular degeneration 41.5 per cent and open angle glaucoma 6.6 per cent. These figures are compared to the results of other epidemiological surveys of the elderly. PMID- 3857780 TI - The sensitivity of Amsler grid testing in early chloroquine retinopathy. AB - Amsler field testing of patients treated with chloroquine and hydroxychloroquine is simple, rapid, reproducible and sensitive. Amsler testing will readily detect small relative paracentral scotomas. Four cases of irreversible bilateral scotomas were detected in 8 eyes of 4 patients with normal static and kinetic fields in 7 of the 8 eyes. Kinetic and static fields on a subsequent examination demonstrated the bilateral paracentral scotomas first detected with the Amsler grid. PMID- 3857781 TI - The use of botulinum toxin A in the treatment of strabismus. AB - Alteration of the position of the eye within the orbit is conventionally achieved by surgery on the extraocular muscles; a new method, selective weakening of one of the muscles with Botulinum Toxin A is described. Results in the first 85 cases treated show that it is a safe, and effective treatment, particularly suited to certain cases of strabismus. PMID- 3857782 TI - The seed-corn. PMID- 3857783 TI - [Biochemically labelled human lymphoblastoid cell line. I. Its karyotypic, growth and physiological characteristics]. AB - A study was made of the properties of human lymphoid cell line RPMI-6410 derived from peripheral blood of a patient with acute myeloblastic leukaemia. The lymphoblastoid cell line was found to be resistant to 5-brom-deoxyuridine and to have a low thymidine kinase activity. The modal chromosome number for RPMI-6410 is 46-47 XY. The karyotype includes marker chromosomes: two large submetacentrics --M1 and M2, and two small acrocentrics--M3 and M4. Ways of marker chromosome formation are discussed. The properties of RPMI-6410 line make it possible to use it for somatic cell hybridization, in particular, for obtaining hybridoma synthesizing human monoclonal antibodies. PMID- 3857784 TI - [Lactic acidosis in non-Hodgkin lymphoma]. PMID- 3857785 TI - [Clinico-morphological analysis of chemotherapy effectiveness in spontaneous hemoblastoses in dogs]. AB - The paper deals with evaluation of the effectiveness of COP scheme in the treatment of spontaneous hemoblastosis in dogs. The results may be used as the "datum point" in assessment of the efficacy of newly-developed antitumor drugs. PMID- 3857786 TI - [Prostaglandin levels of the plasma and urine of hypertensive patients of different ages]. PMID- 3857787 TI - Nephroscopy. PMID- 3857788 TI - Complications of myocardial infarction. PMID- 3857789 TI - Medical grand rounds. West Virginia University Medical Center. Hyponatremia. PMID- 3857790 TI - [Transformation of a myelodysplastic to a myeloproliferative syndrome (chronic granulocytic leukemia)]. AB - A report is presented of the course of a case of the myelodysplastic syndrome which transformed after 16 months into Philadelphia chromosome-negative chronic granulocytic leukaemia. Such a transformation into the myeloproliferative syndrome is considered to be a rare event and some views on the mechanism of this metamorphosis are discussed. PMID- 3857791 TI - [Theoretical and experimental studies on the technology of external bone fracture stabilization]. AB - The stability of the external fixation unit largely depends on the optimal utilization of the possible geometrical arrangement. In view of the vast variety range of variants existing for the construction of external fixation units, it seems to be essential to present the influences of various parameters for instance the distances between Steinmann-pins and Schanz-screws. For various typical constructions with external fixation units the stability and load limit are disclosed by means of calculations and experiment. Discussions serve to find out how the inclination and shifting in the fraction area can be minimalized by fixing the Steinmann-pins and Schanz-screws at a suitable point. The solidity of the frame and of the fixation of the pins and Schanz-screws are compared between the Hoffmann frame and the AO-frame. A simple formula is presented, which serves to detect the compressive force resulting from the elastic bending of the Steinmann-pins, which can be read from an x-ray for example. It is being demonstrated that interfragmentary compression can increase stability ten-fold. The load limit of the combination of Steinmann-pins, Schanz-screws and bones proves that this combination is liable to be overloaded in the case of unsuitable arrangement of the fixation unit. This is then likely to result in a loosening of the screws and pins through direct destruction of the bones in this area. Thus, it has been possible to find out the ideal arrangement of Steinmann-pins and Schanz-screws for the respective kinds of fractures and locations where they occur, as well as optimal means of fixing the frame. Guidelines have been elaborated, which guarantee an optimal functioning stability of the external fixation unit if they are exactly observed and if the operation technique is without fault. Drawing direct conclusions from absolute movements and directions in the fraction area which have been detected by means of calculations and experiment, make it possible to carry out further scientific investigations with regard to the problem concerning the necessary extent of the rigidity of an osteosynthesis. PMID- 3857792 TI - [Microbiologic and clinical significance of cefotiam]. AB - Modern cephalosporins are of considerable importance for the therapy of severe infections by multiresistant organisms. According to in-vitro-findings on ampicillin-resistant E. coli as well as Klebsiella spp., Proteus spp., and serratia spp., altogether 159 strains, instead of cefotaxime nearly always also cefotiam can be used. The two remedies are clearly superior to cephalothin. cefotiam is ineffective to Pseudomonas aeruginosa. But in this case also cefotaxime is clearly inferior to azlocillin. In 6 of 7 casuistic instances the clinical effectiveness of cefotiam could be confirmed with good tolerability. The contemporary establishment of staph. aureus in mixed infections of serratiastaphylococci proved as as particular advantage. A primary therapeutic failure referred to a necrotizing pancreatitis, when no causative organism was proved, in which case also cefotaxime remained without any effect. Despite the improved individual medical possibilities the control of the infectious hospitalism by critical administration of antibiotics and improved hospital hygiene, particularly strict non-infection, must remain the pre-eminent task. PMID- 3857793 TI - [Light microscopic studies of spermatogenesis in rats following the administration of a high dose of 13-cis-retinoic acid]. AB - In an experimental study, we investigated the influence of a toxic dose of 13-cis retinoic acid (40 mg per kg body weight daily) on the spermatogenesis of 30 Wistar rats. 15 rats were killed immediately after 8 weeks application; the remaining 15 animals were put to death after another 8 weeks without application. A control group of another 20 rats only received physiological salt solution daily over a period of 8 weeks. All 30 rats which had been treated with 13-cis retinoic acid showed as normal a spermatogenesis in all parts of the testes as the 20 control animals. PMID- 3857794 TI - [View of the future]. PMID- 3857795 TI - [Alloys]. PMID- 3857796 TI - [Tongue as a mirror of systemic diseases (II)]. PMID- 3857797 TI - [Clinico-radiological studies of the patho-function and patho-structure in functional diseases of the temporomandibular joint]. PMID- 3857798 TI - [Costen's syndrome--new possibilities in diagnosis and therapy?]. PMID- 3857799 TI - [In vivo measurements to determination the force applied in intraligamentary injections]. PMID- 3857800 TI - [Fear and pain as dominant aspects of dental practice]. PMID- 3857801 TI - [Indications for functional orthodontic appliances]. PMID- 3857802 TI - [Indications for fixed orthodontic appliances]. PMID- 3857803 TI - [Medical responsibility in our time]. PMID- 3857804 TI - [Plastic filling materials]. PMID- 3857805 TI - [Adult orthodontic treatment]. PMID- 3857806 TI - [Release of mercury vapor from dental amalgam under oral conditions]. PMID- 3857807 TI - [Electrochemical preparation and treatment of the root canals using Depot phoresis materials as galvanic post elements]. PMID- 3857808 TI - [Merfluan dental salt for periodontal prophylaxis]. PMID- 3857809 TI - [Indications for 3 treatment systems in orthodontics]. PMID- 3857810 TI - [Indications for removable activator appliances]. PMID- 3857811 TI - [Sensible prescribing of analgesics in dental practice]. PMID- 3857812 TI - [No sweetening agent today can take over all the roles of sugar]. PMID- 3857813 TI - [Caries and candidiasis in the deciduous dentition]. PMID- 3857814 TI - [Dentistry in space]. PMID- 3857815 TI - [How can administration in dental practice be made rational?]. PMID- 3857816 TI - [The medical flood: will it be the explosive charge for the health care system?]. PMID- 3857817 TI - [The concept of the Bonn clinic is the unique Kojen system]. PMID- 3857818 TI - [Prevention in health education]. PMID- 3857819 TI - [Drug-use information increases confidence]. PMID- 3857820 TI - [Anaerobic bacteria in acute jaw infections]. PMID- 3857821 TI - [Mineralization differences in dentin stained with methylene blue]. PMID- 3857822 TI - [Local toxic effect of impression materials]. PMID- 3857823 TI - [Quality of ceramic surfaces using scanning electron microscopy]. PMID- 3857824 TI - [Jaw fractures due to gunshot wounds]. PMID- 3857825 TI - [Clinical observations of tissue emphysema]. PMID- 3857827 TI - [Behcet's disease: therapeutic results with rifampicin]. PMID- 3857826 TI - [Psychosomatics and biofeedback for temporomandibular problems]. PMID- 3857828 TI - [Dynamic arch width of the mandible]. PMID- 3857829 TI - [Inlay, onlay, overlay]. PMID- 3857830 TI - [Analysis of the correlation between the dose-response curve for prostaglandin F2alpha and the progress of pregnancy, cervix ripening, pharmacologic estrogen premedication and Partusisten administration in prostaglandin-induced labor]. AB - Correlation between sensibility of PGF2 alpha (dose-response) curve and parameters of inductibility - duration of gestation, cervix score, application of estrogens and Partusisten were investigated. 90 patients in high risk pregnancy were observed. It was stated that the sensibility toward of PGF2 alpha is reciprocal proportional to the age of pregnancy and cervix score and proportional direct to pretreatment of Partusisten. Estrogens don't change the sensibility of the uterus to the PGF2 alpha. PMID- 3857831 TI - [Differential diagnostic criteria of childhood diseases accompanied by hyperkinesias]. AB - On the basis of a clinical study of 162 patients presenting with ticotic hyperkineses as one of their major symptoms of the disease, the conclusion is drawn about the staged development of the syndrome in subclinical forms. Differential-diagnostic signs allowing the differentiation of Tourette's syndrome with simple and neurotic tics are outlined. PMID- 3857832 TI - Program of plenary sessions and advance abstracts of short papers: 29. Symposium Deutsche Gesellschaft fur Endokrinologie, Gottingen, February 20-23, 1985. PMID- 3857833 TI - [Sarcomatous transformation in Paget's disease of bone. Apropos of 3 case reports]. PMID- 3857834 TI - Orthopaedic complications in congenital sensory neuropathy with anhidrosis (congenital absence of pain). Report of two cases. PMID- 3857835 TI - Magnetic resonance imaging of sacrococcygeal tumors. AB - Five sacral tumors, 2 chordomas, 2 chondro- and/or osteosarcomas and one metastasis were examined with magnetic resonance imaging (MRI). The tumor delineation was excellent in all cases, and in several respects superior to CT. The signal pattern from the chordoma differed considerably from the other tumors suggesting a potential for tumor differentiation with MRI. PMID- 3857836 TI - The Hindas hypertension meeting 1984. 12th Nordic Hypertension Meeting. Hindas, Sweden, August 30-September 1, 1984. PMID- 3857837 TI - Assessment of psychic side-effects of antihypertensive drugs. PMID- 3857838 TI - Fetal haemodynamics in pre-eclampsia. Changes during antihypertensive treatment. PMID- 3857839 TI - Evidence of the development of delayed-type autoimmunity against arterial vessel wall antigens following acute hypertensive damage to arterial vessels in rats. PMID- 3857840 TI - Cellular sodium transport in pregnancy induced hypertension. PMID- 3857841 TI - Transcapillary forces in normal pregnant women. AB - Plasma and interstitial fluid colloid osmotic pressure (COP) and interstitial fluid hydrostatic pressure (Pi) were measured in 10 normal pregnant women in first and third trimester. Interstitial fluid COP was measured by a "wick" technique and Pi by a "wick-in-needle" technique. The COP was significantly lower both in plasma and interstitial fluid in the third trimester compared to that in the first trimester. However, the fall in COP was more marked in the interstitial fluid than in plasma. Only small changes in Pi were observed. Our results support the view that reduction of COP in interstitial fluid is a major local edema preventing mechanism. This compensates for the increased capillary pressure and the hypoproteinemia in late pregnancy. The relatively low interstitial fluid COP in third trimester women without edema implies a reduced safety margin against edema formation and may explain why 40-80% of normal pregnant women experience edema. PMID- 3857842 TI - Resistance vessel abnormalities in preeclampsia. PMID- 3857843 TI - Hypertension in pregnancy. Analysis of 261 consecutive cases. AB - In the years 1969 - 1973, 0.3% of 17000 unselected non-diabetic pregnancies were complicated by severe pre-eclampsia, 0.6% by mild pre-eclampsia and 0.6% by hypertension in pregnancy. Records from affiliated maternity centers and the hospital were studied for these 261 women and for 260 women with matched normotensive pregnancies. The women with pre-eclampsia/hypertension in pregnancy had higher blood pressure than the control group very early in pregnancy. The hypertensive women were more often primiparous and they had a slightly higher body weight. The patients with severe pre-eclampsia were older than the other women (30.4 vs 25.4 years for controls, p less than 0.001). Immigrants were not more commonly found in the hypertensive groups, but unmarried mothers were more often seen in the mild pre-eclampsia and pregnancy hypertension groups, 19.1% and 20.6% respectively compared to 7.7% in the control group (p less than 0.01). A family history of hypertension was frequently reported in all groups. The most striking characteristic of women with pre-eclampsia/hypertension in pregnancy was their elevated blood pressure before or very early in pregnancy. PMID- 3857844 TI - Statistical analysis of factors influencing blood-pressure in children and adolescents. PMID- 3857845 TI - Blood pressure in children, measured at rest and during exertion. PMID- 3857846 TI - Blood pressure and response to "stress" in 11-16 year old children. AB - Blood pressure at rest and cardiovascular response to "stress" were studied in 27 girls and 33 boys 11-16 years old. One group (HT, n = 23) had hypertensive mothers with a previous hypertensive pregnancy, another group (NT, n = 20) had normotensive mothers with a previous hypertensive pregnancy and the control group (C, n = 17) had normotensive mothers with normotensive pregnancies. Resting blood pressure was 124/71 mmHg (HT), 117/67 mmHg (NT) and 112/65 mmHg in the 3 groups. Systolic pressure was significantly different in all 3 groups (p less than 0.05 - p less than 0.001). Responses to noise stimulation (100 dBA) were identical in all groups with increases in diastolic and mean arterial blood pressure and cardiac output. During a video game session increases in blood pressure and heart rate were equal in the groups but during physical exercise a slight decrease in diastolic blood pressure was seen in the NT and C groups only. Differences in blood pressure in children with varying maternal history of hypertension do not seem to reflect alterations in the cardiovascular response pattern to "stress". PMID- 3857847 TI - Left ventricular dimensions and systolic function in young adults with mild hypertension. AB - Mean values of ESWS, FFS% and Vcf were increased. Increased performance in the face of increased after-load signifies increased cardiac contractility. Increased ESWS equals inadequate compensatory hypertrophy. Hence, ESWS is probably not a major adjustor of left ventricular free wall thickness. PMID- 3857849 TI - Angiotensin II, aldosterone and arginine-vasopressin in exaggerated natriuresis of chronic glomerulonephritis. PMID- 3857848 TI - Rubidium uptake of mononuclear leukocytes from normotensive and borderline hypertensive first degree relatives to patients with essential hypertension. AB - Uptake of 86Rubidium of mononuclear leukocytes (MNL) was used as a measure of cellular sodium-potassium pump activity. 86Rb-uptake was determined with the pump stimulated mainly from inside the cells by sodium as well as with a combined stimulation from inside by sodium and from outside by Rb. In the first case there was an increased pump activity in MNL from borderline hypertensive offspring of hypertensive patients (BHO), and this may be related to an increased number of pump sites observed previously (10). Estimation of maximal pump activity (Vmax) of MNL suggested that Vmax of each pump site in MNL from BHO may be decreased compared to control value of MNL from healthy normotensive subjects. PMID- 3857850 TI - Angiotensin II natriuresis and antinatriuresis: role of renal artery pressure, renal hemodynamics, and tubular reabsorption. AB - The aim of this study was to determine the role of changes in renal artery pressure (RAP), renal hemodynamics, and tubular reabsorption in mediating the natriuretic and antinatriuretic actions of angiotensin II (AII). In anesthetized dogs, endogenous AII formation was blocked with SQ-14225 and AII was infused i.v. at rates of 5-1215 ng/kg/min while RAP was either servo-controlled at the normal level or permitted to increase. When RAP was servo-controlled to prevent a rise i RAP, AII infusion at all rates from 5-1215 ng/kg/min decreased urinary sodium excretion (UNaV) and fractional sodium excretion (FENa), while increasing fractional reabsorption of lithium (FRLi), an index of proximal tubule fractional sodium reabsorption and distal fractional sodium reabsorption (FRDNa): When RAP was permitted to increase, AII infusion rates up to 45 ng/kg/min decreased UNaV, and FENa, while increasing FRLi and FRDNa. However, at 135 ng/kg/min and above, UNaV and FENa increased while FRLi and FRDNa decreased when RAP was allowed to rise, even though RBF and FF were not substantially different from the values observed when RAP was servo-controlled. Filtered sodium load was slightly higher when RAP was permitted to increase during AII infusion, compared to the dogs in which RAP was servo-controlled, although the differences were not statistically significant. Thus, even very large doses of AII cause antinatriuresis when RAP was prevented from increasing. The natriuretic effect of high dose of AII is caused by increased RAP which decreases fractional sodium reabsorption in proximal and distal tubules and causes slight increases in sodium delivery to the tubules. PMID- 3857851 TI - Renal function and renal haemodynamics before and after 7 years' antihypertensive treatment in men with primary hypertension. PMID- 3857852 TI - Behavior pattern A and compliance with antihypertensive treatment. AB - An analysis was performed on cross-sectional data on 512 hypertensive patients to look at the association of behavior pattern A (coronary prone behavior) and compliance with therapy. In a home interview behavior pattern A was assessed by a questionnaire (The Bortner scale), compliance by a vignette, and blood pressure was measured. Noncompliers showed a higher degree of Type A characteristics, that is there was a significant negative association between behavior pattern A and compliance (p = 0.02). It is proposed that a new variable, behavior pattern A, should be considered in future research on compliance. PMID- 3857853 TI - Tumor burden, chemotherapy, and cell kill in osteosarcoma model. AB - The complex relationships among tumor cell burden, dose and schedule of chemotherapy, and efficacy were investigated in a murine osteosarcoma model in which an easily measured marker provided an accurate, dynamic estimate of host tumor cell burden. Cytoxan (200 mg/kg) produced a 93.2-99.997% tumor cell kill in animals with a pretreatment tumor burden of 0.6-3% body weight. In animals with a pretreatment tumor burden of 5.1-10.24% body weight, however, the same dose of cytoxan produced less than 1 order of magnitude tumor cell kill (31-71%). A schedule utilizing three doses q12 days in animals with a moderate burden of tumor (up to 5% body weight) produced a cell kill of six or more orders of magnitude with some cures, an event which was more frequent with added immunostimulation. A schedule utilizing two doses q20 days in animals with a larger body burden (5-10% of body weight) was essentially ineffective. These results suggest that a small initial body burden (low stage) and an aggressive schedule of treatment are necessary for optimum results in cancer treatment. Small delays in initiation of treatment and prolonged intervals between doses can convert an effective drug to an ineffective one without the need to invoke biochemical mechanisms of resistance. PMID- 3857854 TI - Neoplasms arising in Paget's disease of bone: a study of 82 cases. AB - Eighty-two cases of neoplasms arising in Paget's disease of bone from the Mid America Bone Tumor Registry, accessioned between 1958 and 1983, were reviewed. There were 77 osteosarcomas, 3 fibrosarcomas, 1 chondrosarcoma, and 1 giant cell tumor. The male/female ratio was 2:1. The age distribution was 18%, 29%, 36%, and 17% for the groups less than 51 years, 51-60 years, 61-70 years, and greater than 70 years, respectively. The femur was involved by tumor in 22%; the humerus in 21%; the pelvis in 21%; the calvarium in 12%; the tibia in 10%; and other bones in 15% of the cases. There were 48% survivors after 1 year; 17% after two; and 5% after three and five years; two additional patients with tumor lived for more than seven and 11 years. Radiographs available for simultaneous study in 43 cases revealed predominant tumor patterns that were mixed in 69%, osteoblastic in 21%, and osteolytic in 10%. Other radiographic data and the clinical and histopathologic data are in agreement with five earlier major studies. While the prognosis of neoplasms arising in Paget's disease generally is not good, a small fraction of long-term survivors after aggressive therapy makes this complication a challenge for timely radiographic diagnosis and histopathologic confirmation. PMID- 3857855 TI - Chloroacetate esterase positivity in acute lymphoblastic leukemia. AB - Chloroacetate esterase (CAE) reactivity is associated with acute nonlymphocytic leukemia (ANLL) and, to the author's knowledge, has not been reported in acute lymphoblastic leukemia (ALL). The authors have identified a single patient whose blasts displayed CAE reactivity from a review of 400 newly diagnosed patients with ALL. The diagnosis of ALL in this case was based upon morphologic evaluation (FAB:L1), presence of terminal deoxynucleotidyl transferase (TdT), the absence of reactivity with myeloperoxidase, and the failure of leukemic blasts to mark with a panel of anti-myeloid monoclonal antibodies. Remission was induced promptly with standard ALL therapy. This case demonstrates that punctate CAE positivity rarely can occur in ALL, and, therefore, CAE is not entirely specific for ANLL. The authors conclude that CAE positivity should not be used as a sole criterion to diagnose ANLL in the absence of supporting morphologic, cytochemical, immunocytologic, or clinical information. PMID- 3857856 TI - Gastroenterology and the law. PMID- 3857857 TI - Vasculitic leg ulcers in chronic myelogenous leukemia. AB - Recurrent bilateral leg ulcers developed in two patients receiving hydroxyurea therapy during the chronic phase of chronic myelogenous leukemia. The ulcers were extremely painful and were associated with extensive edema and vasculitic papules. A small-vessel vasculitis with degeneration of collagen and ulceration was seen on biopsy. The ulcers did not respond to treatment with steroids or low dose cyclophosphamide but gradually healed with local measures. The possible pathogenesis of ulcers in chronic myelogenous leukemia is discussed. PMID- 3857858 TI - Familial microcephaly with normal intelligence, immunodeficiency, and risk for lymphoreticular malignancies: a new autosomal recessive disorder. AB - We describe nine patients with an apparently new genetic disorder characterized by: microcephaly with normal intelligence; "bird"-like facial appearance; cellular and humoral immune defects; and increased risk for lymphoreticular malignancies. The postmortem findings of five patients are described. Chromosome instability appears not to be a component of the disorder. The occurrence in three pairs of sibs and isonomy in another family suggests autosomal recessive inheritance. PMID- 3857859 TI - Bulimia: idiosyncrasy or psychiatric disorder? PMID- 3857860 TI - Biomechanical design and clinical evaluation of a new canine-retraction spring. AB - Use of the sectional arch technique facilitates the creation of an optimal force system fulfilling the biomechanical requirements imperative for planned tooth movements. Controlled canine retraction, usually in extraction cases, requires the creation of a biomechanical system to deliver a predetermined force and a relatively constant moment-to-force ratio in order to avoid distal tipping and rotation. The responsive couple delivered to the anchorage unit should be adjusted in such a way that no single tooth is subjected to unwanted side effects and that undesirable changes in the occlusal plane are avoided. On the basis of a series of theoretical considerations described in the present report, a canine retraction spring was constructed from 0.016 X 0.022 inch stainless steel wire, the principal element being a double ovoid loop 10 mm in height. A "sweep" bend was incorporated to avoid unwanted side effects at the second premolar. Load deflection and moment/force curves were derived experimentally and demonstrate the ability of the spring to generate and maintain biomechanical conditions necessary for optimal canine retraction (that is, load deflection = 45 gm per millimeter of activation, antitip moment/force ratio of approximately 11:1, and antirotation moment/force ratio of approximately 7:1). The clinical applicability of the spring is demonstrated in the present report by the presentation of two treated cases. PMID- 3857861 TI - Increase in mandibular and chin projection with orthognathic surgery. AB - Three groups of twelve patients, each of whom had a Class II, Division 1 malocclusion with a markedly convex facial profile and steep mandibular plane, were treated by orthodontic means and orthognathic surgery. One group had mandibular advancement, another had maxillary elevation, and the third had both surgical procedures combined, with genioplasties performed in some cases from each group. Changes were studied with the aid of lateral cephalometric headfilms taken just after surgery and from 5 to 105 months later. Horizontal changes in point B and pogonion after the follow-up period were 7.0 mm and 8.5 mm with mandibular surgery, 5.4 mm and 9.3 mm with maxillary surgery, and 10.7 mm and 16.4 mm with combined surgery. The amount of change is much larger than found with orthodontic or orthopedic treatment alone and makes possible the successful treatment of very difficult problems. PMID- 3857862 TI - Force degradation of orthodontic elastomeric chains--a product comparison study. AB - In the last 20 years, synthetic elastic modules have been introduced to the orthodontist. However, force decay of these materials has been a clinical problem and the purpose of this project was to evaluate the force decay patterns of three commercially available elastomeric products--Ormco Power Chain II, Rocky Mountain Energy Chain, and TP Elast-O Chain--in a simulated oral environment. Thermal cycled samples experienced less force decay over a 21-day period than samples stored at 37 degrees C. Furthermore, statistical analysis confirmed that there was a highly significant difference (p less than 0.01) between the mean force exerted by short modules and long modules for each material. Overall, modules producing higher initial forces (short modules) underwent less force decay after 21 days than did modules producing lower initial force values (long modules). All materials exerted 216 to 459 grams of force initially. After 21 days of simulated tooth movement, the force exerted by the elastic modules was 70 to 230 grams--a significant reduction (p less than 0.001). PMID- 3857863 TI - Silhouette profiles in the assessment of facial esthetics: a comparison of cases treated with various orthodontic appliances. AB - This study uses comparisons of silhouette profiles to determine the effects of orthodontic treatment on facial esthetics. Forty-eight white patients with Class II, Division 1 malocclusions and mandibular retrognathism were treated, without tooth extraction, with the Frankel appliance and by the Begg light-wire, the straight-wire edgewise, and the Tweed edgewise methods. One hundred first-year dental students selected the profile which they estimated had the best facial esthetics and then evaluated this preferred profile as "satisfactory" or "unsatisfactory." As more posttreatment than pretreatment profiles were preferred for each of the four treatment groups, there was no clear trend in preference among the treatment modalities assessed. Percentages of the preferred posttreatment silhouettes selected as "satisfactory" ranged from 46 to 55. The results support the use of the silhouette in the evaluation of profiles. Also, they show the advantage of determining, in surveys of facial esthetics, whether or not preferred profiles or faces are "satisfactory" to the viewers. However, since it is a simplified representation of a profile, the silhouette is a complement to other methods of profile evaluation, not a substitute. PMID- 3857864 TI - Patient cooperation in treatment with removable appliances: a model of patient noncompliance with treatment implications. AB - The uncooperative or noncompliant patient presents a substantial problem during treatment with removable orthopedic/orthodontic appliances. Frequently, the uncooperative patient is labeled as having a poor or defiant attitude toward orthodontic treatment. In contrast to this attitude model of patient noncompliance, this article presents an analysis of uncooperative behavior in terms of behavior-environment relationships. The authors bring together backgrounds of expertise in both clinical psychology and orthodontics. The behavioral model presented is applied to clinical orthodontic patients undergoing treatment with removable functional appliances. Preliminary research findings suggest that the behavioral model described is a successful system for the introduction of a removable device to be worn by the patient. The techniques described also are useful for the previously uncooperative patient undergoing remedial treatment. Another major benefit of using this strategy is found in the response of the children's parents. The approach reduces the potential for and frequency of parent-child conflicts over dental health. Currently, a small sample of children are being treated by the behavioral method. Both parents and patients are involved. A specific schedule for wearing of a removable appliance is identified, along with parental observations and rewards based on patient compliance. Once the youngster is regularly meeting criteria, the program is altered to increase the desired response of appliance wear. The behavioral model has implications for various aspects of orthodontic care, including the use of such appliances as the Frankel, Bionator, headgear, intraoral elastics, and proper lip posture. On the basis of this functional analysis of behavior, implications for treatment and prevention of noncompliance in orthodontic patients are discussed. PMID- 3857866 TI - The postcondylar cartilage graft--an evaluation of an alternative surgical method for the treatment of retrognathia. AB - Postcondylar cartilage grafts were used for 6 years to advance the mandible surgically in adolescent patients with retrognathia. Thirty-seven subjects were treated; of these, 30 were followed for more than 1 year and have been analyzed. Relapse occurred in 9, caused mainly by displacement of the graft. In the stable group temporomandibular joint changes were studied. Progressive calcification of the graft occurred and a normally functioning joint was established in the advanced position. Improvements in surgical technique--in particular, the fixation of the graft--produced consistent stability in the later cases. PMID- 3857867 TI - Re: Comments on condylar growth of the mandible and orthodontic treatment. PMID- 3857865 TI - The accuracy of computerized growth prediction in Class II high-angle cases. AB - This study was conducted to test the accuracy of a commercially available forecasting system in predicting the effects of growth and orthodontic treatment. The pretreatment cephalograms and wax bites of mandibular casts of thirty-three consecutively treated Class II patients with high mandibular plane angles, along with twenty-six criteria related to treatment preference, were submitted for analysis. All patients had already been treated on a nonextraction basis by a single practitioner using high-pull face-bow headgear. The computer-generated posttreatment predictions or visual treatment objectives (VTO's) were compared to the actual posttreatment cephalograms, using twenty-one linear and nine angular measurements. Fifteen of the thirty parameters evaluated showed statistically significant (P less than 0.01) differences between the actual posttreatment result and the computer prediction. The computer was found to be accurate in predicting the effects of growth and treatment on maxillary position and rotation, mandibular length, upper face height, and incisor positions. It was found to be inaccurate in predicting the effects of growth and treatment on maxillary length, mandibular rotation, lower anterior and posterior face heights, the horizontal and vertical positions of the molars, and over 50% of the soft tissue parameters. PMID- 3857868 TI - Markers of genetic variation among the Waorani Indians of the Ecuadorian Amazon headwaters. AB - Until recently, the Waorani Indians of Ecuador's Amazon headwaters maintained a fierce resistance to all intruders into their territory, and as a result of their actions and reputations a population of 600 people controlled a very large territory (about 8,000 square miles). The isolation of the Waorani has resulted in a large linguistic and genetic distance from their neighbors. Our survey of red cell enzymes, immunoglobulin allotypes, and dermatoglyphics demonstrates that the Waorani are a highly inbred and homogeneous population. Of 18 red cell enzymes studied, the Waorani have a limited polymorphism for only 6. Only two Gm haplotypes (Gm1,2,17,21, Gm1,17,21) were found and 60% of those tested were homozygous for the Gm1,17,21 haplotype. All individuals were A2m (1) and 95% of these were homozygous. The Waorani's dermatoglyphic traits fell within the wide range found among other South American Indians with close affinity to the Ecuadorian Jivaro group. Despite the limitations of these genetic systems, they demonstrate that the Waorani share limited genetic traits with the neighboring Jivaro Indians and are isolated from other tribal populations in South America. PMID- 3857869 TI - Mating is random. AB - Human leukocyte antigen (HLA) typing was undertaken in 151 unrelated blood donors and in 35 normal couples having at least two living children. We compared observed and expected sharing of HLA antigens at four loci in normal couples. We also compared the observed sharing in couples with the expected sharing in unrelated blood donors if taken two by two and with the sharing observed after 1000 "synthetic matings" of normal couples. No statistically significant difference in HLA sharing appeared between these groups. Furthermore no differences were observed in the probabilities of sharing individual HLA antigens among the different groups. We thus conclude that the observed HLA sharing in normal couples is governed by chance alone and that mating is random in our population. PMID- 3857870 TI - [Effect of various tracheal diameter forms on airway pressure in experimental intratracheal injector ventilation]. AB - Experimental catheter jet ventilation was performed on tracheal models of four sizes and six different shapes. Three coaxial jet positions were tested: centrally, adjacent to the wall and in a corner of the model. Driving gas pressure and size of the jet were kept constant. Airway pressure declines as the models increase in size. In the corner position, airway pressure is always less than in the centre position. In models with equal cross-section areas, airway pressure differs in all other shapes from that of the cylindrical shape. With this equipment, airway pressures between 9 and 14 cm H2O were achieved in cylindrically-shaped tracheas of a diameter of 15 resp. 20 mm. With the same transverse diameters, but with clinically relevant different tracheal shapes and jet positions, however, the values may vary from 18 cm H2O to less than 5 cm H2O. PMID- 3857871 TI - [Malfunction of equipment by the addition of a bacterial filter in the expiratory branch of the respiratory circuit]. AB - The addition of a continuous Flow System to the circuit of a volume cycled respirator results in an additional IMV option and shows excellent performance for this purpose. The insertion of a bacterial filter into this modified circuit resulted in a dangerous increase of airway pressures after 54 "running hours" for that filter. Test series revealed an insufficient air transmission through the filter, caused by the water vapour-saturated inspiratory gas mixture, which is necessary in long term ventilation. Furthermore it was demonstrated that wet bacterial filters cause malfunction of SIMV systems due to interference with the demand valve responsible for proper air supply. The routine use of a bacterial filter placed in the expiratory branch results in higher risks in an already risky artificial ventilation system and use-nonuse relationships seem to be questionable. PMID- 3857872 TI - Action of surface-active agents on arylsulfatase-C of human cultured fibroblasts. AB - Arylsulfatase-C is a microsomal membrane-bound enzyme with unusual biochemical and genetic properties. Whether it is a single enzyme hydrolyzing different sterol sulfates or a complex of enzymes, with each enzyme hydrolyzing a specific substrate, has not been resolved. Its locus has been mapped to the human X chromosome but appears to escape inactivation. As a first step to clarify its biochemical properties, a systematic search was undertaken for a suitable detergent that can release this enzyme from human cultured fibroblast membranes in a form that is biologically active and electrophoretically mobile. Four non ionic (Triton X-100, Nonidet P-40, Digitonin, and saponin) and four amphoteric (lysolecithin, Zwittergent, Miranol, and Chaps) detergents were studied. At 1% concentration, they released more than 80% of the activity into a low-speed supernatant fraction, except for Saponin which had no effect. With Triton X-100 and Miranol representing the two groups of detergents, significant release occurred only when the detergent concentrations exceeded their respective critical micelle concentrations, thus indicating that arylsulfatase-C is an integral membrane protein. The apparent molecular weight of the detergent-enzyme complex, ascertained by gel filtration, was 85,000 in the presence of Triton X 100 and 335,000 in the presence of Miranol. However, only the preparation solubilized by Miranol (and Chaps, to a lesser degree) permitted migration of the enzyme in nitrocellulose acetate during electrophoresis at pH 7.0, while the enzyme extracted with all other detergents remained at the origin. Therefore, the amphoteric detergent, Miranol, appears to fulfill the requirements for further characterization of the membrane-bound arylsulfatase-C in human cultured fibroblasts. PMID- 3857873 TI - [Metabolic criteria of the effective treatment of acute renal failure with prostaglandin E2]. PMID- 3857874 TI - Pain and the diagnostic process: conceptions and misconceptions. AB - Pain may be considered a diagnostic alarm that acknowledges but usually fails to determine the etiology of a particular clinical problem. Diagnosis thus involves the extraction of additional information from a patient in order to determine rational bases for treatment. The process is ill-defined and fraught with error unless the diagnostician is aware of all and only the relevant diagnostic alternatives. This list of alternatives plus an appreciation of the likelihood of each possible diagnostic outcome determines the fastest rate that diagnostic information can be processed by any system in the absence of unpredictable events called noise. Human diagnosticians must be fluent in the "language" used to convey the desired information if performance is to be optimized. In general this involves restructuring the diagnostic task into smaller pieces which are easier to digest perceptually. One way to accomplish this is to ignore or eliminate patterns which are either irrelevant or occur so rarely (or so commonly) that they usually have negligible impact on diagnostic performance. The utility of a diagnosis is determined ultimately by the degree to which it influences the health and well-being of both the patient and society at large. Hence, the consequence of a particular disease may offset the low diagnostic yield per examination resulting from a low or high prevalence of the disease. When diagnostic patterns are limited by ignorance to only signs and/or symptoms such as pain, the diagnostic process loses its meaning and treatment decisions are compromised necessarily by uncertainty. PMID- 3857875 TI - Ehlers-Danlos syndrome as a cause of temporomandibular joint disorders. PMID- 3857876 TI - Dental anesthesiology and issues of practice, politics and education. PMID- 3857877 TI - Behavioral and psychosocial factors in chronic craniofacial pain. AB - Patients with chronic pain have a multifactoral problem that exhibits both physical and psychosocial symptoms. Evaluation includes determination of the physical diagnosis and psychosocial contributing factors on an equal and integrated basis. Contributing factors include any factor that plays a role in initiation and perpetuation or results from and thus, complicates the problem. Management follows with both reduction of contributing factors and treatment of the diagnosis. Contributing factors are classified as biological, behavioral, social, cognitive, emotional, and environmental. Individual factors in each group for chronic craniofacial pain are reviewed. PMID- 3857878 TI - Regulation of nitrogenase activity by covalent modification in Chromatium vinosum. AB - Nitrogenase in Chromatium vinosum was rapidly, but reversibly inhibited by NH4+. Activity of the Fe protein component of nitrogenase required both Mn2+ and activating enzyme. Activating enzyme from Rhodospirillum rubrum could replace Chromatium chromatophores in activating the Chromatium Fe protein, and conversely, a protein fraction prepared from Chromatium chromatophores was effective in activating R. rubrum Fe protein. Inactive Chromatium Fe protein contained a peptide covalently modified by a phosphate-containing molecule, which migrated the same in SDS-polyacrylamide gels as the modified subunit of R. rubrum Fe protein. In sum, these observations suggest that Chromatium nitrogenase activity is regulated by a covalent modification of the Fe protein in a manner similar to that of R. rubrum. PMID- 3857879 TI - Reversible and irreversible inactivation of cellular nitrogenase upon oxygen stress in Azotobacter vinelandii growing in oxygen controlled continuous culture. AB - Azotobacter vinelandii growing in oxygen controlled chemostat culture was subjected to sudden increases of ambient oxygen concentrations (oxygen stress) after adaptation to different oxygen concentrations adjustable with air (100% air saturation corresponds to 225 +/- 14 microM O2). Inactivations of cellular nitrogenase during stress (switch off) as well as after release of stress (switch on) were evaluated in vivo as depending on stress duration and stress height (delta pO2). Switch off was at its final extent within 1 min of stress. The extent of switch off, however, increased with stress height and was complete at delta pO2 between 8-10% air saturation irrespective of different oxygen concentrations the organisms were adapted to before stress, indicating that switch off is adaptable. Inactivation of nitrogenase measureable after switch on represents irreversible loss of activity. Irreversible inactivation was at its characteristic level within less than 3 min of stress and at a delta pO2 of less than 1% air saturation. The level of irreversible inactivation increased linearly with the oxygen concentration the organisms were adapted to before stress. Thus adaptation of cells to increased oxygen concentrations did not prevent increased susceptibility of nitrogenase to irreversible inhibition during oxygen stress. The fast response of irreversible inactivation at low stress heights suggests that it takes place already during stress. Thus switch off comprised both a reversible and an irreversible phase. The data showed that reversible inactivation of nitrogenase was less susceptible to oxygen stress than irreversible inactivation.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3857880 TI - [Prostaglandin F2 alpha (Enzaprost) in the therapy of sterility in cattle]. PMID- 3857881 TI - Enzymatic detoxification using lipophilic hollow-fiber membranes: II. Sulfation reactions. AB - A lipophilic hollow-fiber technique was used in the enzymatic sulfation of lipophilic toxins. Endogenous and exogenous toxins, for which glucuronidation reactions already were demonstrated with this technique, were submitted to sulfate transferase reaction as an alternative phase-II detoxification route. Native enzyme was circulated on the external side of a lipophilic hollow-fiber membrane while the toxin-containing media (serum or aqueous solution) were circulated inside the hollow fiber. Sulfation reactions were catalyzed by rabbit liver cytosol, with a specific sulfate transferase activity of 626 nmol/min-mg protein. Clearance of the hollow-fiber module for phenol, p-cresol, paracetamol, 2-aminophenol, and 5-hydroxyindol were determined to be 38.1, 47.2, 2.7, 5.3, and 3.2 pmol/mg protein/h/cm2 hollow-fiber surface, respectively. This technique allows sulfation reactions with crude enzyme preparations over long periods without loss of activity from covalent immobilization and without immunological hazards. PMID- 3857883 TI - The relationship between differences in regional growth rates and changes in shape during human fetal craniofacial growth. AB - Large differences in growth rates between various craniofacial regions have been reported but have not distinguished between absolute and relative rates. Measurements on 60 fetuses, 49-212 mm crown-rump length, showed that absolute growth rates correlated highly with size of the craniofacial region measured (r = 0.9996, p less than 0.001) but were unrelated to changes in shape and relative proportion. By standardizing for size, absolute growth rates were converted into relative growth rates which correlated with changes in relative proportion and thus shape (r = 0.785, p less than 0.001). PMID- 3857882 TI - Three-dimensional network of microtubules in secretory ameloblasts of rat incisors. AB - Secretory ameloblasts appear to contain isolated microtubules and microtubules arranged in bundles associated with filaments or sheets of filaments. The relation between isolated and bundled microtubules in secretory ameloblasts was investigated by serial sections. Some isolated microtubules entered microtubule bundles in adjacent sections. Microtubules which diverged from a bundle sometimes converged into another bundle in other sections. Microtubules were associated with filaments or sheets of filaments for varying distances. It is concluded that isolated microtubules frequently form bundles by joining with other microtubules, and thus, microtubules make a three-dimensional network throughout the whole cytoplasm which is probably concerned with the transport of secretion granules. PMID- 3857885 TI - Cephalometric analysis of condylar adaptations to altered mandibular position in adult rhesus monkeys, Macaca mulatta. AB - Morphological adaptation to altered position of the mandible was investigated in 19 young adult rhesus monkeys (n = 10 experiment and 9 control). The experimental animals had a bite-splint cemented to the maxillary dentition which opened the bite interincisally by 15 mm and was worn continuously for 48 weeks. Lateral radiographic cephalograms were taken prior to the experiment and at 12-week intervals thereafter. Computerized cephalometry, facilitated by the use of radio opaque bone markers, was used to assess changes in mandibular position and morphology. An immediate effect of the bite-splint was the clockwise rotation (opening) of the mandible and anterior translation of the condyle on the articular eminence, much as occurs normally during jaw depression. During the next 48 weeks, the mandible (1) rotated anti-clockwise (closed) due mainly to antero-superior displacement of the maxilla and intrusion of the mandibular dentition and (2) underwent a significant increase in length (p less than 0.05). These findings indicate that the mandibular condyle of young adult monkeys is capable of small, but biologically significant, compensatory growth after displacement. PMID- 3857884 TI - Surfactant-induced increases of permeability of rat oral mucosa to non electrolytes in vivo. AB - The effect of non-ionic, cationic and anionic surfactants on non-electrolyte permeability of rat oral mucosa in vivo was tested. The surfactants caused an increase in mucosal permeability to oil-soluble compounds and small and large water-soluble compounds. The effect was concentration-dependent, and both the cationic and anionic surfactants were more potent than the non-ionic compounds. Surfactant-treated tissue showed widening of the stratum corneum due to separation of layers and loss of surface layers. Measurement of the permeability to sodium lauryl sulphate indicated that this anionic surfactant produced damage to the permeability barrier. PMID- 3857886 TI - Age-related and 224Ra-induced abnormalities in the teeth of male mice. AB - A high incidence of incisor abnormalities was found in aged control and aged 224Ra-treated male CBA mice. Visual examination of the abnormalities in both controls and treated mice revealed extreme shortening of the upper incisors and hypoplastic, grooved or undulating enamel. The administration of 865 or 1730 nCi of 224Ra hastened the onset of incisor abnormalities although no specific feature was attributable solely to radium toxicity. Radiography and histology revealed corrugated incisors, obliteration of the pulp cavity, extension and disorganized growth of incisors basally, secondary incisors, open pulp and fractures within the alveoli. There was a statistically-significant reduction in the number of molars present in animals given 432, 865 or 1730 nCi 224Ra. PMID- 3857887 TI - Bite-force variation related to occlusal variation in rural and urban Punjabis (North India). AB - Occlusal variation from defined norms was much less in traditional rural youths eating a rough unprocessed diet. Bite forces were significantly higher in the rural youths; their habitual harder chewing may help to being about their better occlusal development. Rural youths showed stronger increase with age and sex dimorphism than urban youths in bite force; thus, rurally the development of masticatory and facial structures may depend on functional masticatory demand. PMID- 3857888 TI - Evolutionary trends of the histological pattern in the teeth of Edentata (Xenarthra). AB - In a comparative study of the dental structure of Edentata, the central tissue was identified as a modified orthodentine, except in the Glyptodontidae where an osteodentine was found. Some evolutionary trends of the tissues in these teeth may have been related with the extinction of ground sloths. Comparative studies of the tissues in mammalian teeth seem to be good tests for systematics. PMID- 3857889 TI - The size of permanent teeth in Klinefelter (47,XXY) syndrome in man. AB - The permanent teeth tended to be larger than normal in a group of 77 males with the syndrome, indicating that the presence of an extra X-chromosome has a growth promoting effect which operates from early in development. PMID- 3857890 TI - The relationship between the number of the bacterium Streptococcus mutans at discrete sites on the dentition of macaque monkeys (Macaca fascicularis) and the subsequent development of dental caries. AB - Sixteen consecutively-born monkeys were used in a longitudinal study to determine the changes occurring in the total number of bacteria in the palatal grooves of the upper left first deciduous molar teeth, following the introduction of a sucrose-based diet. The total number of bacteria recovered from the grooves increased significantly following the diet change. Twenty-nine days after the diet change, the number of Streptococcus mutans had increased from a median value of less than 10(2) to approx. 10(7) per groove, and the number of Streptococcus sanguis decreased. These changes in the number of Strep. mutans occurred prior to the detection of dental caries. Grooves that became carious harboured significantly more bacteria and more Strep. mutans than did grooves remaining caries-free six months after the diet change. PMID- 3857891 TI - Inhibition of [3H]-thymidine uptake in human gingival fibroblasts by extracts from human dental plaque, oral bacteria of the Streptococcus and Actinomyces species. AB - Extracts from human dental plaque, Streptococcus mutans, Streptococcus salivarius, Streptococcus faecalis, Streptococcus sanguis, Actinomyces israelli and Actinomyces odontolyticus inhibited [3H]-thymidine uptake by primary human gingival fibroblast cell lines as previous work has shown in respect of HeLa cells. The results show that a variety of oral bacteria, not usually considered to be periodontal pathogens, elaborate factors that adversely affect fibroblasts. PMID- 3857892 TI - The relationship between antigenaemia and excretion of hepatitis B surface antigen in human whole saliva and in gingival crevicular fluid. AB - Hepatitis B surface antigen (HBsAg) was detected in whole saliva and in gingival crevicular fluid of 28 (90 per cent) of 31 seropositive patients. No correlation was found between the presence of the antigen and blood in saliva or with the gingival state of health. Thus, HBsAg appears to reach saliva via the crevicular fluid. PMID- 3857893 TI - Bite force and masseter muscle electromyographic activity during onset of an isometric clench in man. AB - The surface electromyogram (EMG) of the masseter muscle and interocclusal force were recorded in six human subjects during fast and slow clenches. The simple linear force/EMG relation that applies for steady bite-force levels was inadequate to explain their relationship under conditions of changing force: a second component of force, its rate of change, was necessary. EMG/force equations for fast and slow clenches were broadly similar. The rate of change factor may account for the apparent EMG/force lag observed in earlier studies. PMID- 3857894 TI - Non-linear amplification of electromyographic signals with particular application to human chewing. AB - A method is described for logarithmically-amplifying electromyographic signals so that the most commonly-occurring events within them are enhanced selectively before digital conversion. There is a need to resolve low and intermediate levels of activity during chewing, while preserving the occasional high-level responses. Besides achieving a higher resolution in subsequent digital sampling, this signal processing technique increased the representation of low and intermediate activities in polygraphic displays. It further ensured that signals were presented to the A/D converter within the code width of the instrument. PMID- 3857895 TI - The effects of preventing movement of the rat incisor on the structure of its periodontal ligament. AB - A quantitative, ultrastructural study was made on the periodontal ligaments of rat mandibular incisors immobilized for 18 days. Fibroblasts and their organelles (i.e. endoplasmic reticulum, mitochondria, microtubules, microfilament bundles, lysosomes, intracellular collagen profiles and intercellular contacts), oxytalan fibres, collagen fibrils and ground substance were quantified. There was re orientation of tissue at the lateral borders of the ligament and an apparent increase in size of epithelial cell rests. Within the matrix, the mean collagen fibril diameter decreased and the amount of ground substance increased. No change occurred in oxytalan fibres. Within the cells, effects were seen only in cell contacts and in the relative volume of intracellular collagen, lending no support to the view that fibroblast activity generates the force responsible for tooth eruption. PMID- 3857896 TI - Sex differences in the effect of extirpation of the submandibular salivary glands in rats. AB - Because of the known interaction between the endocrine system and the structure and function of submandibular glands, the effects 3 months after extirpation of these glands in male and female rats were studied including the following parameters: change of body weight, sexual maturity (in females), sexual behaviour (in males), blood sugar, total proteins, haematocrit, the weight of various glands and oxygen uptake of various cerebral and glandular structures. The response in the two sexes was in each case different. PMID- 3857897 TI - The relationship between the bacterium Streptococcus mutans in the saliva and dental caries in children in Mozambique. AB - Four hundred and sixty-two children, aged 10-14 years, from eight areas were examined for Streptococcus mutans in saliva and for dental caries. Strep. mutans strains from some samples were further characterized by serological and biochemical methods. Strep. mutans was identified in 98 per cent of the children and 40 per cent showed high counts. Serotypes c and d dominated among the strains. The distribution of Strep. mutans among the children varied between the eight areas but was not correlated with the difference in caries prevalence which ranged from 38 to 88 per cent. In individual children, however, there was an association between high counts of Strep. mutans and the presence of dental caries. Thus, Strep. mutans can be widely distributed and occurs in high numbers in a population with a low prevalence of caries. PMID- 3857898 TI - Clearance of glucose and sucrose from the saliva of human subjects. AB - The ability of 20 healthy people to clear test solutions of sucrose (0.73 M) and glucose (1.4 M) from the mouth was examined. Both sugars were cleared within 20 min in a two-step manner. Rapid clearance occurred between 0 and 6 min; much slower clearance occurred thereafter. It took 7.2 min with glucose and 6.3 min with sucrose for the saliva-sugar concentration to fall to 1 mg/ml. Salivary flow, stimulated during sugar exposure, decreased in a two-step pattern similar to sugar clearance. Evidently, clearance was dependent on the rate of flow of saliva which took about 1 h to return to its resting flow level. Comparison of the pattern of sugar clearance to the Stephan curve (the rapid pH fall followed by a slow pH rise seen after rinsing with sugar solutions) indicated that the pH fall phase of the curve occurs during the initial period of rapid sugar clearance and salivary flow, and the pH-rise phase occurs during the subsequent period of slower clearance and slow saliva flow. Comparison with the data of Swenander Lanke (1957) [Acta odont. scand. 15, 3-156], indicated that the clearance of sugar solutions also reflects the clearance of sugar-containing solid foods from the mouth. PMID- 3857899 TI - Effects of compressive forces on proliferation and matrix synthesis in mandibular condylar cartilage of the rat in vitro. AB - The cartilage from 4-day-old rats were exposed to continuous and intermittent compressive forces. Proliferative activity and matrix synthesis in vitro were determined by measuring the incorporation of [3H]-thymidine, [35S]-sulphate and [3H]-proline by autoradiography and liquid-scintillation counting. The findings suggest that a continuously-applied force of approx. 0.5 g stimulated proliferation in the condylar cartilage but reduced the synthesis of the sulphated glycosaminoglycans and collagen. A stimulatory influence on the synthesis of these matrix components, on the other hand, was observed when the condylar cartilage was exposed to an intermittent force (0.7 Hz) of approx. 0.5 1.0 g; this intermittent force, however, reduced the proliferative activity. It appears that, at least in vitro, the basic growth processes in the condylar cartilage can be regulated by compressive forces. PMID- 3857900 TI - An in-vitro system for studying the effect of variable compressive forces on the mandibular condylar cartilage of the rat. AB - An in-vitro system enabled variable range of continuous and intermittent compressive forces to be applied to the cartilage of 4-day-old rats under serum free culture conditions. A continuous compressive force below 3 g did not affect the growth of the cartilage; when the force exceeded 3 g, growth ceased. Under an intermittent compressive force up to 8 g, growth continued, but at a lower rate; over 8 g, growth ceased. When growth-restricting compression was removed or reduced, growth was reactivated until a new balance was achieved. The normal architecture of the different zones was altered in the non-compressed in-vitro controls, but not in cultured cartilage during the application of these compressive forces. PMID- 3857901 TI - Measurement of blood flow in the oral mucosa and skin of the rhesus monkey using radiolabelled microspheres. AB - Fifteen micrometres radiolabelled dextran spheres were injected into three adult monkeys; after measuring reference flows, the animals were killed and biopsies were taken from skin and 15 oral mucosal regions. These were weighed, the radioactivity counted and a blood flow calculated as ml/min per 100 g tissue; the area and volume of each biopsy were also determined and blood flows re-calculated on a per area and per volume basis to determine the effect of changing the method of expressing flow. The flow to the different oral regions did not show any significant differences in rank order when expressed on these different bases. Four regions, maxillary and mandibular free gingiva and anterior and posterior dorsum of tongue, showed significantly higher blood flows than all other regions; skin showed a lower flow than the majority of oral regions and palate the lowest of all regions. PMID- 3857902 TI - In-vitro acid production by the oral bacterium Streptococcus mutans 10449 in various concentrations of glucose, fructose and sucrose. AB - At intermediate and high concentrations, the results with the sugars were similar, with lactic acid as the main end product. Over 4 h, the pH fell from approx. 7 to 4. At low monosaccharide concentrations (2 mM glucose, 2 and 5 mM fructose), after an initial pH drop and period of lactic-acid production, evidence of pH rise and lactic-acid consumption were noted. This did not happen when sucrose was added to the bacteria. There was evidence of a heterolactic-acid fermentation pattern at low-sugar concentrations, lactic, acetic and formic acids being produced in similar amounts. The results suggest that, when low-sugar concentrations are present in dental plaque, Strep. mutans is capable of consuming previously-formed lactic acid. PMID- 3857903 TI - Serum antibodies against oral Streptococcus mutans in young children in relation to dental caries and maternal close-contacts. AB - Thirty-six children aged 2.6-4.9 years were studied with respect to dental caries, Streptococcus mutans counts in dental plaque, and the estimates of total amount and avidity of serum IgG, IgM and IgA antibodies against Strep. mutans 10449, serotype c. A significant positive correlation (r = 0.49, p less than 0.01) was found between the number of Strep. mutans and caries-index in children. Two children with dental caries had no oral Strep. mutans. In median tests, high antibody titre and avidity of serum IgG antibodies against Strep. mutans were associated (p less than 0.05) with low counts of Strep. mutans. No such relationship was found with IgM or IgA antibodies. Children who had had frequent maternal close-contacts in their first year had significantly more (p less than 0.05) IgG antibodies against Strep. mutans than children with rare close contacts. PMID- 3857904 TI - Infectivity and natural transmission of the bacterium Streptococcus mutans in monkeys (Macaca fascicularis) at different ages. AB - Oral inoculation of adolescent monkeys with laboratory strains of Streptococcus mutans resulted in only sporadic implantation. Oral colonization of all strains, except possibly one, was not enhanced by dietary sucrose compared with glucose nor by precleaning of accessible tooth surfaces. Infant animals were more susceptible to implantation by laboratory-maintained strains of Strep. mutans than adolescent or adult animals. This difference was magnified when in-vivo maintained Strep. mutans strains were used. Strep. mutans was readily acquired by uninfected adolescent animals from infected cage mates. Strep. mutans-free adolescent monkeys exhibited significant-salivary IgA and serum-IgG response to Strep. mutans antigen, possibly representing a cross-reaction to indigenous Streptococcus sanguis. Uninfected infant animals showed no salivary or serum response to Strep. mutans. There was no change in salivary IgA antibody to Strep. mutans in adolescent animals after implantation or in recipient animals after acquisition of Strep. mutans. PMID- 3857905 TI - The movement of radioactive molecules across dentine in vivo in the dog. AB - Using a technique for measuring the movement of circulating molecules across the odontoblast-dentinal complex, the movement of water and alpha-aminoisobutyric acid through dentine and into a flow cell prepared on the tooth is described. The movement of water depended on dentine thickness, and varied from 0.40 microliter/min per cm2 in a flow cell overlying an average thickness of 0.74 mm of dentine, to 1.23 microliter/min per cm2 in a flow cell with a dentinal floor of 0.40 mm average thickness. The data suggest that alpha-aminoisobutyric-acid concentrations were lower in dentinal fluid than in blood plasma. PMID- 3857906 TI - Inhibition by cocoa extracts of biosynthesis of extracellular polysaccharide by human oral bacteria. AB - Extracts of defatted cocoa inhibited the biosynthesis of extracellular polysaccharide by both cell-free and cell-associated streptococcal glucosyltransferases, but did not affect growth or acid production. Both water insoluble and water-soluble polysaccharide syntheses were inhibited, and the net result was a shift away from adherence-supportive polysaccharide. Inhibition was non-competitive with respect to sucrose. The inhibition of polysaccharide biosynthesis was observed also with Actinomyces species. The findings suggest that the inhibitory effects of cocoa on plaque accumulation and caries formation are due to inhibition of bacterial polysaccharide production. PMID- 3857907 TI - The effects of heat inactivation, tortuosity, extracellular polyglucan and ion exchange sites on the diffusion of [14C]-sucrose in human dental plaque residue in vitro. AB - Human dental plaque, accumulated for up to 24 h in vivo was packed into polyethylene tubing (0.5 mm, i.d.) by centrifugation at 5000 g for 15 min at 4 degrees C. [U-14C]-sucrose and carrier sucrose were diffused horizontally from one end and after 6 h, the [14C]-sucrose profile along the tube was quantified by liquid-scintillation counting and a diffusion coefficient was calculated. Compared with water, dental plaque significantly retarded the diffusion of sucrose. In live plaque, retardation of sucrose was less than in killed plaque, due to metabolism of sucrose to faster-diffusing species. Increasing the plaque tortuosity by increasing the centrifugal force used for packing reduced the diffusion rate further. Experimental conditions which increased the concentrations of water-insoluble, ethanol-precipitable extracellular glucan, EPG, in the plaque effected a reduction in the diffusion rate of sucrose. In contrast, an increase in EPG in batch cultures of Streptococcus mutans, serotype c, was associated with an increased rate of diffusion. The presence of ion exchange sites did not affect the diffusion of sucrose in Sephadex gel models although the tortuosity of their pore structure resulted in a 6.5-fold reduction in the diffusion rate compared with water. Thus the retardation of the diffusion of sucrose in dental plaque is largely explained by the tortuosity of the available diffusion channels and the retardation of diffusion effected by EPG is probably of greater significance in older, thicker and more tightly-packed dental plaque. PMID- 3857908 TI - A method for radiographic longitudinal study of mineral content during in-vitro demineralization and remineralization of human tooth enamel. AB - The combination of X-ray-radiography with digital image processing described provides a tool for longitudinal studies of de- and remineralization of dental enamel. The mineral loss and uptake can be observed in the same specimen. PMID- 3857909 TI - Mouth-to-mouth transmission of the bacterium Streptococcus mutans between mother and child. AB - The production of bacteriocins by 314 Streptococcus mutans isolates from 20 mother-infant pairs was studied to test the likelihood of maternal transmission of this species. The patterns of inhibition were sufficiently different to allow differentiation of the 314 isolates into 41 bacteriocin types. The bacteriocin codes of isolates within one pair did not correspond to the codes of strains isolated from any other pair. The number of infant strains (per infant isolates) matching maternal strains within each mother-infant pair were 10/10, 10/10, 10/10, 12/12, 2/3, 10/10, 10/10, 10/10, 3/3, 5/10, 8/8, 3/3, 8/8, 3/3, 7/7, 4/4, 3/3, 8/8, 3/3 and 4/4 for pairs 1-20, respectively. Statistical analysis, utilizing a randomization test, generated a p value less than 0.0001, which is 12 standard errors above the level expected if the pairings were random. PMID- 3857910 TI - Effects of apoprotein E polymorphism on serum lipoprotein concentration. AB - Serum concentrations for the cholesterol and triglyceride content of very low density lipoprotein (VLDL) and the cholesterol content of intermediate density lipoprotein (IDL), low density lipoprotein (LDL), and the high density lipoprotein fractions (HDL2), HDL3) were measured in 337 men and women with the apo E phenotype who were born in the Grampian Region of North East Scotland. The subjects' ages ranged from 45 to 60 years (mean, 53 years). Cigarette smoking and alcohol consumption were recorded and were shown to have minor, but suggestive, effects on serum lipoprotein concentrations. The LDL concentration of E-3/2 subjects was compared with the commonest category, E-3/3, and was found to be about 20% lower in men and about 12% lower in women, in whom the VLDL and IDL concentrations were substantially elevated. In E-4/3 women, the serum LDL concentration was about 10% higher than in E-3/3 women, and the other differences were minor. The effect of allelic substitutions differed between the sexes. The relations between C-peptide ratios and serum lipoprotein concentration differed by gender and phenotype. A comparison with earlier estimates of LDL heritability suggests that in this population, a substantial fraction of the genetic variance of LDL is due to segregation at the apo E locus. The implications of this significant finding are discussed. PMID- 3857911 TI - Localization of the gene for the vitamin B12 binding protein, transcobalamin II, near the centromere on mouse chromosome 11, linked with the hemoglobin alpha chain locus. AB - Somatic cell hybrids, recombinant inbred (RI) mouse strains, and backcross breeding experiments were used to locate the gene of transcobalamin II (Tcn-2), the vitamin B12 binding protein in mouse serum. TCN-2 was found to be useful genetic marker in the somatic cell hybrids. Selected hybrid clones were derived from fusions between GR mouse cells and the Chinese hamster cell line E36. Analysis of mouse specific chromosomal enzyme markers in relationship to TCN-2 secretion, in the hybrid clones, provided provisional evidence for assignment of the Tcn-2 locus to chromosome 11. The strain distribution pattern of the TCN-2 variants S and F in the RI series CXS, constructed from the cross of BALB/cHeA (TCN-2S) with STS/A (TCN-2F), implied a close linkage with the hemoglobin alpha chain locus (Hba) on chromosome 11. Backcross breeding using inbred strains confirmed these findings and located the Tcn-2 gene closest to the centromere, linked with waved 2 (wa-2) and Hba with recombination frequencies of 6.9 and 19.2% each. The linkage group Tcn-2/wa-2/Hba was established. PMID- 3857912 TI - A new variant of serum leucine aminopeptidase in the mouse: its development and possible regulation. AB - Serum leucine aminopeptidase (LAP) isozymes were compared in four strains of inbred mice during postnatal development, adult life, and pregnancy. In pregnancy, no changes in the maternal serum LAP pattern were observed, in contrast to human studies. One strain, DD/S, differs from the other three in serum LAP. Polymorphism in serum LAP has not been previously described in the mouse. Neonatal DD/S mice exhibit a single band of serum LAP upon starch gel electrophoresis; however, between 14 and 18 days of age, two distinct bands appear, which persist throughout adult life. In the strains C57BL/6J, BALB/cJ, and DBA/2J there is a single band of activity at all stages. Crosses and backcrosses between DD/S and C57BL/6J show that the double-band variant is inherited as an autosomal recessive. The variant is independent of both the supernatant malic enzyme (Mod-1) and the intestinal LAP (Lap-1) loci, which are known to be linked on chromosome 9. The serum LAP variant is linked to an intestinal alkaline phosphatase variant. The presence of a separate structural gene is suggested by the genetic independence of the serum LAP variant from Lap 1. Also, the two serum LAP bands of DD/S are not interconverted by treatment with neuraminidase, beta-mercaptoethanol, or heat or by mixing the sera of DD/S and C57BL/6J prior to electrophoresis. The level of serum LAP activity in DD/S is approximately twice that in C57BL/6J. While these observations imply two structurally distinct proteins, the absence of any trace of the second LAP band in the heterozygote strongly suggests that the LAP variant protein is not the result of a separate structural gene. Intestinal LAP in DD/S migrates with the same electrophoretic mobility as the serum LAP variant, implying that the variant might originate in the intestine and its appearance in the serum be modulated by some factor at an unlinked locus. PMID- 3857913 TI - Partial characterization of an erythropoiesis inhibitory factor. AB - An inhibitory factor of erythropoiesis, obtained from normal human urine, is indicated to be a complex of a fragment of alpha 1-acid glycoprotein and prostaglandin F2 alpha. Immunoelectrophoresis reveals two protein components in the EIF complex which separate during acrylamide gel electrophoresis. A gamma globulin (MW 185,000) is a carrier of the complex. A fragment of alpha 1-acid glycoprotein (MW 9300) retains the inhibitory factor, PGF2 alpha. Noncovalent forces bind the PGF2 alpha to the protein, and PGF2 alpha can be extracted with benzene. PMID- 3857914 TI - A modified flavodoxin with altered redox potentials is less efficient in electron transfer to nitrogenase. AB - The flavodoxins of the Azotobacter vinelandii wild-type and a mutant strain TZN 200 have been studied. Although the primary structure of the two proteins is the same, the ability of the mutant flavodoxin to donate electrons to nitrogenase is reduced by 75%. One reason may be the raised mid-point potential of -435 mV for the semiquinone/hydroquinone couple in the mutant flavodoxin. The respective redox potential for the wild-type flavodoxin was found to be -480 mV. As shown by paper chromatography and light absorption spectroscopy, the structure of FMN is modified in the TZN 200 flavodoxin. PMID- 3857915 TI - Identification of potential antiatherosclerotic/hypolipidemic agents by their effect on hepatic conversion of androst-4-ene-3,17-dione to etiocholanolone and androsterone. AB - Clinical observations have shown that hypercholesterolemia is associated with abnormal androgen metabolism, viz. an increased excretion of etiocholanolone (E) relative to androsterone (A). Substances which restore the A/E ratio to normal likewise lower serum cholesterol. Postulating that the abnormal steroid and sterol metabolism may be either causally related or dependent on the same metabolic defect, we have developed in vitro and in vivo models to select drugs which favorably effect the ratio of A to E produced from [4-14C]androst-4-ene 3,17-dione [4-14C]A-dione). The in vitro model employs a mixture of rat liver microsomal delta 4-3-ketosteroid-5 alpha-reductase and cytosolic 3 alpha hydroxysteroid dehydrogenase and delta 4-3-ketosteroid-5 beta-reductase. Kinetic and mechanistic studies have been performed on active compounds using this in vitro assay. The in vivo model employs i.v. injection of [4-14C]A-dione followed by collection of bile in anesthetized, hypophysectomized female rats. Many compounds preselected in the in vitro assay likewise reduced the A/E ratio in vivo. One of these compounds (CGS 10614A) also lowered serum cholesterol and reduced the incidence and severity of atherosclerotic lesions in aortas of cholesterol-fed rabbits. PMID- 3857916 TI - Illegal practice of dentistry. PMID- 3857917 TI - The effects of sugar-based medicines on the dental health of sick children. PMID- 3857918 TI - HEC dental health campaign 1985. PMID- 3857919 TI - The efficacy of face-masks. PMID- 3857920 TI - Paget's disease. PMID- 3857921 TI - Dentine hypersensitivity: aetiology, differential diagnosis and management. PMID- 3857922 TI - Non-surgical repair to an iatrogenic perforation of the root canal: a case history. PMID- 3857923 TI - Dental radiology at the crossroads. PMID- 3857924 TI - The antimicrobial activity of modern mouthwashes. PMID- 3857926 TI - Royal College of Surgeons of England statement on animal experimentation in medicine and dentistry. PMID- 3857925 TI - The efficacy of face masks. PMID- 3857927 TI - Treatment of the emergency patient. PMID- 3857928 TI - Management of early dental caries in fissures with fissure sealant. PMID- 3857929 TI - Response of cracked incisor teeth to cold and electrical stimulation. PMID- 3857930 TI - Dental health and ethnicity. PMID- 3857932 TI - Non-accidental injury in the child presenting as a suspected fracture of the zygomatic arch. PMID- 3857931 TI - Preparation and filling of the root canal. PMID- 3857934 TI - Aspirator tubes. PMID- 3857933 TI - The effects of the composition and method of drinking of soft drinks on plaque pH. PMID- 3857935 TI - The adverse effects of sexual freedom. PMID- 3857936 TI - Prenatal diagnosis and variable presentation of recessive X-linked ichthyosis. AB - Three infants with X-linked ichthyosis have been observed following pregnancies in which placental sulphatase deficiency (PSD) was suggested prenatally by low oestrogen excretion and an abnormal urinary steroid excretion pattern. This was confirmed in two cases by the absence of placental enzyme activity. In one case labour was spontaneous but all deliveries required Caesarean section. At 8 months the first infant showed an eczema in an atopic distribution but when seen at 5 years had typical X-linked ichthyosis. The skin of the second child peeled extensively at the age of 2 days but was not troublesome for 2 years, when ichthyosis vulgaris was diagnosed on clinical grounds. This pattern has persisted for 3 years. The third infant showed a mildly scaly skin in the neonatal period but at 3 months the features and distribution of X-linked ichthyosis were apparent. X-linked ichthyosis may have a variable presentation which is not always apparent at birth. PMID- 3857937 TI - Steroid sulphatase deficiency in patients initially diagnosed as ichthyosis vulgaris or recessive X-linked ichthyosis. AB - Twenty-one patients with ichthyosis were classified as either ichthyosis vulgaris (IV) (five cases) or recessive X-linked ichthyosis (RXLI) (sixteen cases) by using a steroid sulphatase assay of plantar callus and peripheral leukocytes. The patients had presented with various clinical manifestations, which had resulted in some initial misdiagnoses. Cases which initially resemble IV may in fact be RXLI, although we found that if a case is initially diagnosed as RXLI it is unlikely to be a case of IV. PMID- 3857938 TI - A comparison of prostaglandin E2 pessaries and laminaria tents for ripening the cervix before termination of pregnancy. AB - Forty primigravid women aged 15-45 years were randomly allocated to receive either an intravaginal pessary of 3 mg prostaglandin E2 (PGE2) or an intracervical 5-mm laminaria tent (LT) 12-16 h before termination of pregnancy at 6-14 weeks gestation. The degree of dilatation of the cervix at operation and its resistance to further dilatation during the procedure were assessed by a 'blind' operator. Laminaria tents were more effective in achieving dilatation and softening of the cervix than were PGE2 pessaries and in 40% of women no further dilatation was necessary. There were no associated side-effects or complications. A cervical tear occurred in two of 20 patients treated with PGE2 pessaries and all 20 required further dilatation of the cervix. Laminaria tents provide a simple, safe, acceptable and effective means of 'ripening' the cervix prior to termination of early pregnancy. PMID- 3857939 TI - Tumour-associated antigen CA 125 in patients with ovarian cancer. AB - The serum levels of antigen CA 125 expressed by epithelial ovarian carcinoma were measured in 27 postmenopausal women with ovarian tumours and in 16 controls. Increased serum levels of CA 125 were found in nine (75%) out of 12 patients with ovarian cancer; in three with stage I disease levels were not elevated. No significant difference was found in the concentration of CA 125 detected in peripheral or ovarian venous blood. Decreased antigen levels were found 6-30 weeks after radical operation and cytostatic chemotherapy in the ovarian cancer group. The results indicate the value of measuring CA 125 as a tumour marker in the follow-up of ovarian cancer. PMID- 3857940 TI - Prostaglandin levels in human vitreous. AB - Vitreous samples were obtained from 41 eyes undergoing vitrectomy, and radioimmunoassays were performed to measure concentrations of the prostaglandins PGE2, PGF2 alpha, prostacyclin, and thromboxane. Presumably physiological levels (approximately 100 picograms/ml) were found in vitreous from eyes undergoing cataract extraction. Eyes with vitreous haemorrhage, retinal detachment, or cystoid macular oedema had similarly low levels. Vitreous prostaglandins were mildly elevated in trauma and endophthalmitis and markedly elevated in aphakic bullous keratopathy. The role prostaglandins may play in cystoid macular oedema is reviewed. PMID- 3857941 TI - Changing 17 beta-hydroxysteroid dehydrogenase activity in preimplantation rat and mouse embryos. AB - The 17 beta-hydroxysteroid dehydrogenase (17 beta-HSD) activity in rat and mouse preimplantation embryos was determined by measuring the interconversion of estradiol (E2) and estrone (E1). Rat and mouse embryos were cultured in medium containing 450 nM [3H]E1 or -E2 and the amount of [3H]E1 and -E2 in the medium at the end of the first hour was determined. The results showed that in both species 17 beta-HSD activity was detectable from the one-cell stage (Day 1) onward. In the rat, 17 beta-HSD effected primarily E2----E1 conversion, with the activity decreasing from Day 1 to Day 5. In the mouse, we found primarily E1----E2 conversion from Day 1 to the morning of Day 4, then E2----E1 increased sharply to near the E1----E2 rate in the evening of Day 4 and surpassed the E1----E2 rate the next morning. It seems that: 1) 17 beta-HSD is active throughout the entire preimplantation period, and 2) the enzyme activity changes during preimplantation development. Thus, the rat and mouse preimplantation embryo could regulate the E1 to -E2 ratio in the embryos and in their environment. PMID- 3857942 TI - Characterization of the processed form of a ubiquitous protein displaying a variable membrane organization in erythroid cells. AB - We recently identified a group of proteins that are present in all hematopoietic cells but are organized in the cell membrane of erythrocytes in a lineage specific fashion (Blood 61:803, 1983). One of these polypeptides has a mol wt of approximately 37,000 (p37T) when translated in vitro from messenger RNA (mRNA) extracted from the erythroleukemic K562 cell line. The membrane-associated form of the p37 translation product has been analyzed in detail here. When detergent lysates prepared from biosynthetically labeled K562 cells were reacted with an antiserum containing anti-p37T antibodies, one of the proteins immunoprecipitated had a nominal mol wt of 36,000 to 37,000 (p37M). Several results suggest that this protein is homologous to the p37 translation product: (1) the protein, like the mRNA coding for the p37 translation product, was expressed in cell lines with diverse differentiated phenotypes; (2) the antigenic determinant(s) on p37M and p37T are oriented to the inner surface of the erythrocyte membrane while being oriented to the outer surface of erythroleukemic cells; and (3) one-dimensional peptide maps show homology between p37M and p37T. P37M does not appear to possess an N-terminal leader sequence that is proteolytically cleaved as the molecule is inserted into the membrane. In addition, p37M is not glycosylated. PMID- 3857943 TI - A unique pattern of central nervous system leukemia in acute myelomonocytic leukemia associated with inv(16)(p13q22). AB - Twenty-six patients with inv(16)(p13q22) or del(16)(q22) in association with acute myelomonocytic leukemia (AMML-M4, FAB classification), and abnormal marrow eosinophils have been treated at this institute. Initial bone marrow eosinophilia (greater than or equal to 4%) was observed in 22 of 26 patients (85%), and abnormal eosinophil morphology, characterized by immature cells with some interspersed basophilic granules, was evident in 26 of 26 (100%). Giemsa-banded chromosome analysis performed in all patients revealed 16 cases with inv(16)(p13q22) alone, and ten cases with additional chromosome changes. Twenty five patients received combination induction chemotherapy, and 23 (92%) achieved complete remission (CR). The median duration of remission was 18 months (range, six to 72 + months), and the median duration of survival was 34 months (range, 0.5 to 133 months). Nine patients (35%) relapsed in the CNS at a median time of 19 months (range, six to 133 months) from first marrow CR. All patients had leptomeningeal disease, and in addition, six of nine (66%) demonstrated two or more enhancing lesions on computed tomography brain scan, consistent with intracerebral myeloblastomas. Review of 384 Giemsa-banded patients with acute myeloid leukemia revealed no other morphologic or cytogenetic subgroup with either an equivalent incidence of CNS leukemia or documented intracerebral myeloblastomas. This series of inv(16)(p13q22)/del(16)(q22) AMML reports a favorable prognosis for such patients and associates a specific clonal cytogenetic subgroup of acute leukemia with a distinct propensity for CNS relapse, manifesting as leptomeningeal disease and intracerebral myeloblastomas. PMID- 3857944 TI - Therapy-related acute myeloid leukemia and myelodysplastic syndrome: a clinical and morphologic study of 65 cases. AB - This study consists of 65 patients (pts) who developed a myelodysplastic syndrome (MDS) (39 pts) or acute myeloid leukemia (AML) (26 pts) following chemotherapy and/or radiotherapy; the interval from the onset of therapy to bone marrow abnormality ranged from 11 to 192 months (median, 58). Thirty-three patients had been previously treated for lymphoproliferative diseases, 29 for carcinoma, and three for a nonneoplastic disorder. Approximately 30% of the cases presenting in the MDS phase evolved to AML in one to 12 months (median, 3.5). The AML in 49% of the cases was not readily classified according to French-American-British (FAB) criteria; the primary difficulty in classification related to the involvement of multiple cell lines. Among the cases that could be classified, all FAB types were represented except for M1; M2 was the most frequent type. Clonal chromosome abnormalities were found in marrow specimens from 22 of 24 (92%) patients studied with G banding; 11 had abnormalities of chromosomes 5 and/or 7. The median survival for all patients was four months with no significant difference between those treated and not treated with antileukemic therapy. The median survival was three months for the patients presenting with AML, six months for the patients with AML following an MDS, and four months for the patients with an MDS that did not evolve to AML. The findings in the present study suggest that there are three stages of therapy-related panmyelosis: (1) pancytopenia with associated myelodysplastic changes, (2) a frank MDS, and (3) overt AML. Many patients will present in the stage of overt AML that differs from de novo AML primarily by the high incidence of trilineage involvement, difficulty in classification, frequent cytogenetic abnormalities, and poor response to antileukemic therapy. The myelodysplastic phase, with or without evolution to acute leukemia, is a highly lethal disease with a median survival comparable to that of the patients who present with AML. PMID- 3857946 TI - Disconnection of genes coding for self-renewal and differentiation: a possible mechanism of diversity in acute myeloid leukemias. PMID- 3857945 TI - The proliferation in suspension of the progenitors of the blast cells in acute myeloblastic leukemia. AB - A minority of blast cells in acute myeloblastic leukemia (AML) form colonies in culture in methylcellulose when stimulated by media conditioned by normal leukocytes in the presence of phytohemagglutinin (PHA-LCM). Blast colonies can be replated successfully, either as pooled cells or suspensions from single colonies. However, the plating efficiency declines with repeated passages, and more than four subcultures have not been achieved. In this study, blast populations were cultured in suspension, with fetal calf serum, alpha-minimal essential medium and PHA-LCM. In cells from 17 of 18 patients, exponential growth of clonogenic blast cells was maintained for six to seven days without reculturing. Colonies obtained from progenitors taken from liquid culture and replated in methylcellulose were replated to obtain the secondary plating efficiency (PE2). In 14 cases, this value was maintained or increased. In three instances, PE2 fell following culture in methylcellulose. When cells in suspension were recultured, exponential growth continued. In nine instances, exponential growth was maintained for from seven to 70 days. During this time, PE2 was maintained. Results from experiments using velocity sedimentation separation and analysis of single colonies were consistent with the view that the increase in clonogenic cells in suspension was a manifestation of their self renewal capacity. The observations also support a model of blast progenitor growth that contains the postulate that these are capable not only of self renewal but also of determination-like events leading to loss of proliferative capacity. PMID- 3857948 TI - Employees' incentive and fringe benefits. PMID- 3857947 TI - Factors affecting survival in patients presenting with synchronous hepatic metastases from colorectal cancer: a clinical and computer analysis. AB - A review of 90 patients presenting in Leeds over the period 1976-80 with synchronous hepatic metastases from colorectal cancer has been undertaken. The median survival for the group was 10.3 months (range 1-48 months). A multivariate analysis identified factors in the history and examination of the patient, results of biochemical and haematological investigations and characteristics of both the primary and secondary tumour, which influenced survival. Recognition of these factors allowed both a clinical scoring index and computer survival model to be constructed. When applied to the group as a whole both were reasonably accurate at predicting survival (62 per cent for the survival model and 66 per cent for the scoring index). However, the computer model correctly identified 80 per cent of the 'long-term' survivors (greater than 12 months from the time of diagnosis). It is concluded that many trials of therapy for hepatic metastases from colorectal cancer have failed to consider the natural history of the disease and the identification of prognostic indices should allow for adequate stratification within the treatment arms of any future study. PMID- 3857949 TI - Loss of consciousness in the dental office. PMID- 3857950 TI - A case history describing the use KOOLiner from COE. PMID- 3857951 TI - The politics of dentistry. PMID- 3857952 TI - Are you contributing too much to your retirement plan? PMID- 3857953 TI - Loosen up, doctor. PMID- 3857954 TI - Mouth protection: the healthy choice. PMID- 3857955 TI - Dental hygiene quality assurance: definitions, issues, and directions for Canada. PMID- 3857956 TI - Comparative dexamethasone suppression test measurements in bulimia, depression and normal controls. AB - Twenty bulimics, 20 depressives and 20 normal controls were studied using the Dexamethasone Suppression Test (DST) as defined by Carroll et al. Their past psychiatric and family histories were compared. We found that actively bulimic subjects had a rate of DST non-suppression of 20%, and that 20% of them had a past history of a major depressive disorder. Forty per cent had a history of alcoholism and/or antisocial personality in a first degree relative, but only 5% had a positive family history of affective disorder. These rates were significantly lower than those found in the depressed group except for the family history of alcoholism and/or antisocial personality for which there was no significant difference. We identified a subgroup of bulimic DST non-suppressors who, like patients with melancholia, were characterized by past history of major depressive illness and high rates of family history of affective disorder, alcoholism and/or antisocial personality in first degree relatives. This group responded to antidepressant medications in a manner similar to depressed patients. PMID- 3857957 TI - Six new cases of prolymphocytic leukemia with heterogeneous prognosis. Clinical and immunologic features, light microscopy, and ultrastructural findings. AB - The clinical features and diagnostic evaluation of six patients affected by prolymphocytic leukemia (PLL), are described. Some of the cases deviate from a relatively uniform and aggressive clinical course of the disease entity. An actuarial survival analysis of 60 cases gathered from the literature and the authors' experience indicate that the cases showing the most prolongated evolution may reach 30% of the total. The different aggressiveness in the clinical course of these patients does not depend on the efficiency of the therapies applied. The percentage of prolymphocytes (PL) in peripheral blood throughout the clinical course was variable and not depending on the treatments used. This fact, in conjunction with (1) the presence of cellular types deviated from the typical PL and detected both at optical and ultrastructural levels and (2) the existence of cases of PL with minimal splenomegaly and leukocyte counts of less than 50 X 10(9)/liter, could lead to an underdiagnosis of PLL and hinder the actual cognition of the natural medical history of the disease. PMID- 3857958 TI - Skin lesions in chronic granulocytic leukemia. Treatment of a patient with topical nitrogen mustard. AB - A patient is described with an unusual presentation of ulcerating skin lesions in Philadelphia chromosome-positive chronic granulocytic leukaemia. Treatment with topical mustine ointment (nitrogen mustard, mechlorethamine) achieved a good palliative result. PMID- 3857959 TI - Childhood multifocal osteosarcoma. Clinicopathologic and radiologic correlates. AB - The authors reviewed the clinical charts and pathologic and radiographic materials of nine pediatric patients (mean age, 11.0 years) presenting with multiple skeletal foci of osteosarcoma. Four patients presented with pulmonary metastases, and five had osseous disease only. All had densely sclerotic, predominantly osteoblastic tumors, usually in metaphyseal locations. Evidence of aggressive tumor cell behavior--such as vascular, articular, epiphyseal, or soft tissue invasion--was usually present in surgical specimens. Despite intensive chemotherapy, all patients died from 6 to 37 months after diagnosis (median survival, 12 months). Comparison of clinical and pathologic features for patients presenting with or without pulmonary metastases failed to disclose any notable differences between the two groups, indicating a common pathogenesis and evolution for their multifocal disease. The authors conclude that this variant of osteosarcoma is a highly aggressive form of the disease that may be accompanied by pulmonary metastases. PMID- 3857960 TI - Intramedullary spinal cord germinoma producing HCG and precocious puberty in a boy. AB - Extremely high concentrations of human chorionic gonadotropin in the cerebrospinal fluid were found in a 5-year-old boy presenting sexual precocity and leg pain. An intramedullary spinal cord tumor was revealed by myelogram and metrizamide computerized tomography, and a biopsy specimen taken at laminectomy. Histologically, the tumor showed germinoma with syncytiotrophoblastic giant cells. The tumor remitted for 5 months after irradiation of 3500 rad and chemotherapy, but recurred in spite of adding 7500 rad and more aggressive chemotherapy. No relapse has been seen for 1 year after amputation of the spinal cord at the T7 level. PMID- 3857961 TI - Primary bone cancer incidence in black and white residents of New York State. AB - Some descriptive epidemiologic characteristics of primary bone cancers were presented for black and white residents of New York State (1975-1980) using data from the population-based New York State Cancer Registry. Average annual race- and age-specific incidence rates were calculated for 1975 to 1980 for three histologic types (i.e., osteosarcoma, Ewing's sarcoma, and chondrosarcoma). The significantly lower incidence of Ewing's sarcoma in blacks versus whites was confirmed, whereas lower rates for chondrosarcoma in blacks supported findings from the Surveillance, Epidemiology and End Results (SEER) Program. A higher rate of osteosarcoma in blacks versus whites in the less than 15-year age group, although not statistically significant, was consistent with findings from another population-based registry in the US. This difference was due to osteosarcoma of the leg, and could be related to racial differences in growth rates during childhood. Comparisons with data from Africa suggest certain similarities in patterns as well as some possible differences, which could provide general clues to etiology (i.e., genetic versus environmental factors). PMID- 3857962 TI - Childhood malignancies of the eye and orbit in northern Nigeria. AB - One hundred four histologically proven malignant tumors of the eye and orbit in children seen in Guinness Eye Clinic, Kaduna, Nigeria between 1975 and 1982 are presented. Retinoblastoma and Burkitt's lymphoma account for the majority of the tumors. The data are compared with those from Ibadan, Nigeria. Burkitt's lymphoma occurs less frequently in Kaduna, whereas the incidence of retinoblastoma is almost the same. Chloroma, which was not seen in Ibadan, accounted for 2.9% of the current series. Factors that may be contributory to the observed differences are discussed. PMID- 3857963 TI - Cytologic evidence for increased rRNA gene activity in hemin-induced K562(S) cells. AB - Hemin-induced K562(S) cells have been studied for the following parameters: cell proliferation, erythroid induction, hemoglobin accumulation, and activation of ribosomal gene clusters 48 hr after hemin induction. Increased transcriptional activity of rRNA genes has been demonstrated by cytochemical methods at both the cell population and single cell level. The following results have been obtained: (a) The vast majority of induced cells shows a highly significant increase in the number of active rRNA gene clusters per cell. At this time, the number of benzidine-positive cells and the quantity of hemoglobin per cell are almost doubled. (b) Specific rRNA gene clusters are activated within single cells. Activation can be visualized at the single gene cluster level. (c) The increase in the average number of active ribosomal gene clusters per cell is not due to clonal selection, but rather to diffuse activation of several gene clusters. (d) The transcriptional activity of rRNA genes has been shown to be regulated at the cellular level by an agent known to specifically induce derepression of genes responsible for erythroid differentiation. PMID- 3857964 TI - Familial osteosarcoma associated with 13;14 chromosomal rearrangement. AB - Two prepubertal sisters of American Indian origin developed osteosarcoma at 8 and 12 years of age. This familial occurrence, tumor onset prior to puberty, unusual tumor location in one who also had short stature, and ethnic background all suggest an inborn predisposition to bone cancer rather than a chance occurrence. Rearrangements involving chromosomes #13 and #14 were found in both the surviving proband and mother. Comparison of the arm ratio and prometaphase G-banding patterns of the rearranged chromosomes suggests either deletion of band 14q11.2 or pericentric inversion (with breakpoints at 13q12 and 14q11.2) in the proband's rearranged chromosome, but not in her mother's. Her mother, who had no malignancy, had a typical Robertsonian translocation [t(13;14)(p11;q11)]. Three previously reported children with chromosomal abnormalities developed osteosarcoma at unusually young ages, younger even than in reported sibships with osteosarcoma. The most frequently detected cytogenetic abnormalities in sarcoma tumor cells involve chromosomes #13 and #14. In addition, some cases of bilateral retinoblastoma and familial unilateral retinoblastoma, which are known to be at increased risk for osteosarcoma, are associated with tiny deletions on chromosome #13. Thus, there may be a causal relationship between constitutional loss or rearrangement of genetic material at these breakpoints on chromosomes #13 or #14 and development of osteosarcoma in this family that is similar to that seen in patients with small constitutional chromosomal deletions who develop Wilms' tumor and retinoblastoma. PMID- 3857965 TI - Oncogene mobility in a human leukemia line HL-60. AB - HL-60, a cell line derived from a human promyelocytic leukemia, shows amplification of the oncogene c-myc. Chromosome aberrations reported in HL-60 include double minutes (DMs) and an abnormally banded region (ABR) on chromosome #8. A relationship between these chromosomal aberrations and amplification of c myc DNA has been suggested. We report the localization by cytologic hybridization of amplified c-myc DNA to a marker chromosome, M3q+, in an early passage of HL 60. The localization of c-myc to an ABR on an 8q+ chromosome was confirmed in later passage clones. The most probable derivation of the M3q+ chromosome is t(5p;17q) with additional material associated with c-myc amplification inserted into 17q. This localization is of interest in light of the association between t(15:17) and promyelocytic leukemia. The results indicate that amplification and chromosome integration can occur at a site other than the native gene locus and at different integration sites in different lineages of the same tumor. PMID- 3857966 TI - Major karyotypic abnormalities in a near-tetraploid erythroleukemia. AB - A case of erythroleukemia (EL; FAB M6) is presented in which the leukemic cells of the marrow were characterized by two ranges in the chromosome number, i.e., one hypodiploid and another near-tetraploid. All characteristics of major karyotypic abnormalities (MAKA) were present, i.e., increased karyotype instability with variation of the chromosome count from metaphase to metaphase, dicentrics, acentrics, marker chromosomes, double minute chromosomes (DMs), and centromere spreading. All of these events were variably represented from metaphase to metaphase. The prognosis was poor, with survival of 1 month after the diagnosis of EL. The meaning of extreme MAKA in the classification of EL is discussed. PMID- 3857968 TI - Phase I trial of mitoxantrone in children. AB - Mitoxantrone was administered as a single iv injection once every 3 weeks to 84 children with advanced acute leukemia and solid tumors in a phase I trial. Dose limiting granulocytopenia occurred at dosages greater than 18 mg/m2 in children with solid tumors, while hospitalization for febrile episodes occurred in nine of 12 patients with acute leukemia receiving dosages greater than 24 mg/m2. Six children developed evidence of cardiac dysfunction, including three instances of congestive heart failure. No other significant toxicity was noted. Complete responses were seen in one child with neuroblastoma metastatic to bone, one with acute lymphoblastic leukemia, and four with acute nonlymphoblastic leukemia. PMID- 3857967 TI - Karyotypic and clinical findings in a consecutive series of children with acute lymphocytic leukemia. AB - Detailed karyotypic findings and clinical data on 70 consecutive newly diagnosed children with acute lymphocytic leukemia (ALL), primarily from Indiana, are presented. These children fall into five karyotypic groups: (a) normal chromosomes; (b) hyperdiploid I, with chromosome numbers greater than 50, frequently with multiple copies of the same chromosome, and often lacking a consistent abnormal clone; (c) hyperdiploid II, with karyotypes having 47-49 chromosomes and usually with all of the karyotypically abnormal cells identical; (d) pseudodiploids, with either translocations or deletions of specific chromosomes; and (e) hypodiploids. Because few of this series of children have expired or relapsed, patients in the karyotypic groups have been considered in relation to those clinical factors that have been found to be of prognostic significance by the Children's Cancer Study Group. Age, white blood cell count, and platelet count were significantly different in patients among the five karyotypic groups. A significantly greater number of pseudodiploid patients had white blood cell counts greater than 50,000 X 10(6)/L and were not in the infant age group, as has been the case for other series. Specifically, the 4;11 translocation was associated with a higher risk of early death compared with other patients. Among those with normal karyotypes, platelet levels of greater than 100 X 10(9)/L occurred more frequently than among those with abnormal karyotypes. PMID- 3857969 TI - Modulation of the activity of PALA by dipyridamole. AB - PALA is thought to inhibit an early step in de novo pyrimidine synthesis, causing depletion of intracellular pyrimidine nucleotides. Dipyridamole, a nucleoside transport inhibitor which can block restoration of nucleotide levels via the salvage pathway, was tested for its ability to augment the cytotoxicity of PALA against normal and malignant human cells in vitro. At the clinically relevant concentration of 1 microM, dipyridamole increased the cytotoxicity of PALA against a melanoma, a colon carcinoma, a promyelocytic leukemia (HL-60), and normal marrow (CFU-GM) in clonogenic assays. Dipyridamole produced 50% inhibition of uridine uptake in these cells at concentrations of less than 0.1 microM and reduced the LD50 of PALA by approximately 50% in mice. These results indicate that dipyridamole can markedly potentiate the activity of PALA in vitro and in vivo. PMID- 3857970 TI - Allergic reactions to teniposide in patients with neuroblastoma and lymphoid malignancies. AB - Acute allergic reactions have been reported in 1%-5% of patients receiving teniposide. In a patient population of 82 children with leukemia and lymphoma, we observed only two acute reactions during the infusion of 1707 doses of teniposide. In contrast, 14 of 105 children with neuroblastoma developed acute allergic reactions during the infusion of 665 doses of teniposide. Four rechallenge doses of the drug were given to patients with neuroblastoma after premedication with antiallergic agents. All four doses resulted in repeat reactions. Our data suggest that children with neuroblastoma have a significantly higher incidence of acute reactions to teniposide than patients with other malignancies (P = 0.008), and that these reactions cannot be prevented by premedication with antiallergic drugs. PMID- 3857971 TI - Treatment of chronic myeloid leukemia blast crisis with vindesine and prednisone. AB - Sixteen patients in chronic myeloid leukemia blast crisis entered a phase II trial with vindesine and prednisone. Median duration of the chronic phase was 29 months in 13 patients, one previously had polycythemia vera, and two presented with a primary blast crisis. Eleven patients had myeloblastic features, as evidenced by morphology, cytochemistry, and cell surface antigens; three had a mixture of myeloid and lymphoid blast cells with lymphoblastic predominance; one had blast cells which displayed lymphoid characteristics; and one was classified as undifferentiated. Three patients had complete remissions lasting 1 month (myeloid), 3 months (mixed), and 5 months (lymphoid). Eleven patients had minor responses, with a median duration of 3 weeks (eight with myeloid, two with mixed, and one with undifferentiated). Two patients did not respond to vindesine. Leukopenia and thrombocytopenia were severe and prolonged independent of their morphologic or immunologic phenotype. PMID- 3857972 TI - Phase II study of aclarubicin and diaziquone in the treatment of advanced small cell bronchogenic carcinoma (EST 4581): an Eastern Cooperative Oncology Group Study. PMID- 3857973 TI - Enamel fluoride profile construction from biopsy data. PMID- 3857975 TI - Effect of soluble calcium on fluoride uptake by artificial caries lesions in vivo. PMID- 3857974 TI - Raman spectra of phosphate and monofluorophosphate ions in several dentally relevant materials. PMID- 3857976 TI - Remineralization in vivo of artificial caries lesions by a monofluorophosphate dentifrice. PMID- 3857977 TI - Single fluoride doses and enamel fluorosis in the rat. PMID- 3857978 TI - Abstracts of papers presented at the 31st ORCA congress. European Organization for Caries Research. July 4-7, 1984, Noordwijkerhout, The Netherlands. PMID- 3857979 TI - Micro-sampling by abrasion. PMID- 3857980 TI - Stability of selected plaque species and their relationship to caries in a child population over 2 years. PMID- 3857981 TI - ATP content and viability of human dental plaque during prolonged starvation. PMID- 3857982 TI - Effect of sucrose as a gustatory stimulus on the flow rates of parotid and whole saliva. PMID- 3857983 TI - Rehardening properties of mucin- or CMC-containing saliva substitutes on softened human enamel. Effects of sorbitol, xylitol and increasing viscosity. PMID- 3857984 TI - Chemical and physical evaluation of dialyzed-reconstituted acidified gelatin surface lesions of human enamel. PMID- 3857985 TI - Self-gelling liquid composition for topical application of medications. PMID- 3857986 TI - Influence of tooth paste particle size and tooth brush stiffness on dentine abrasion in vitro. PMID- 3857987 TI - Fluoride uptake by dentin surfaces following topical application of TiF4, NaF and fluoride varnishes in vivo. PMID- 3857988 TI - An evaluation of three procedures for fluoride analysis. PMID- 3857989 TI - Intraoral uptake of fluoride by presoftened enamel following systemic administration and fluoride mouthrinsing. PMID- 3857990 TI - Fluoride concentration in deciduous enamel in high- and low-fluoride areas. PMID- 3857991 TI - Caries prevalence and dental fluorosis in German children in areas with different concentrations of fluoride in drinking water supplies. PMID- 3857992 TI - Oral cancer: early detection. PMID- 3857993 TI - Surgery and orthodontics for unerupted teeth. PMID- 3857994 TI - Direct sagittal CT scanning of the temporomandibular joint. PMID- 3857995 TI - An overview of facial pain and temporomandibular joint problems. PMID- 3857996 TI - Myofascial referred pain patterns: the role of trigger points. PMID- 3857997 TI - Craniofacial pain--the TMJ management dilemma. PMID- 3857998 TI - Facial pain disorders commonly confused with TMJ dysfunction. PMID- 3857999 TI - Etiology, diagnosis and treatment of temporomandibular joint derangements. PMID- 3858000 TI - The management of a restorative practice. PMID- 3858001 TI - The marketing edge: operatory positioning. PMID- 3858003 TI - Why bother with record keeping? PMID- 3858002 TI - Basic intraoral photography technique. PMID- 3858004 TI - Selling a dental practice through phased sale/role reversal. PMID- 3858005 TI - Oral cancer in California. An interview with Gordon M. Rick, DDS. PMID- 3858006 TI - Etiology of oral cancer. PMID- 3858007 TI - Advances in therapy for oral cancer. PMID- 3858008 TI - Early detection and diagnosis of oral cancer. PMID- 3858009 TI - Prosthetic rehabilitation of patients with oral cancer. PMID- 3858010 TI - The dentist's role in oral cancer prevention and patient behavior modification. PMID- 3858011 TI - Surface roughness of squamous cell carcinoma of the oral mucosa. AB - The surface roughness value of 39 oral squamous cell carcinomas was measured by the Rmax method. The means of the eight measurement values of each carcinoma ranged from 87 micron to 1176 micron. The average value of all 39 lesions was 341 micron. The average value of the lesions of the papillomatous and granulomatous types was larger than that of the leukoplakic and erosive types. The lesions with the size of more than 2 cm in diameter were rougher than those of less than 2 cm. The lesions of the gingiva were rougher than those on the tongue. There was an inclination that the surface of the verrucous carcinoma was rougher than that of the invasive squamous cell carcinoma and that the surface of early carcinoma was smoother than that of the invasive squamous cell carcinoma. PMID- 3858012 TI - Inner ear barotrauma. AB - Inner ear barotrauma was observed by compressing or decompressing guinea pigs. The barotrauma in compression was greatly influenced by auditory tube function, and, in the animals deprived of this function, we could observe far more severe damage of inner ear hair cells and far more frequent round window rupture than in animals not thus deprived. Barotrauma in decompression was brought about in guinea pigs not deprived of auditory tube function with a decompression speed of 0.1 kg/cm2/sec, which is so severe that even a healthy auditory tube could not endure it. It can be said that the middle and inner ear are more apt to be damaged in decompression than in compression. PMID- 3858013 TI - Identification of anthracycline analogues with enhanced cytotoxicity and lack of cross-resistance to adriamycin using a series of mammalian cell lines in vitro. AB - Clinical resistance to adriamycin (ADR) develops readily, and cardiotoxicity is a major dose-limiting side effect. A range of anthracycline derivatives have been synthesized recently, and a number reported to exhibit significantly reduced cardiotoxicity in experimental animals. Using NIL 8 Syrian hamster overy cells and two continuous human tumour cell lines derived from colon carcinomas we have screened a series of 11 anthracycline analogues, determining their in vitro cytotoxic effects by colony-forming assays. Five agents proved significantly more cytotoxic than ADR: dihydroxyanthraquinone (DHAQ), mitoxantrone (DHAD), 4 demethoxydaunorubicin (4-DNR), 4'-0-tetrahydropyranyl-adriamycin (THP-ADR), and 4'-deoxyadriamycin (4-ADR). We have also established in vitro a subline of the L5178Y murine lymphoma resistant to ADR and have used this model to identify derivatives with potential value for overcoming ADR resistance. We have observed three patterns of response: (i) complete cross-resistance with 4'-epiadriamycin and daunorubicin; (ii) slight cross-resistance with 4-DNR, THP-ADR, 7-con-O methyl-nogarol and aclacinomycin A; and (iii) complete absence of cross resistance with 4-ADR, 4'-O-methyladriamycin, DHAQ, DHAD, and methylhydroxyellipticinium. These straightforward preclinical screens thus identify three drugs which may merit clinical evaluation, since they not only show an increased level of cytotoxicity in vitro to ADR at equivalent concentrations but also overcome resistance to ADR in this murine model system. PMID- 3858014 TI - Small intestinal transit time affects methotrexate absorption in children with acute lymphoblastic leukemia. AB - Serum methotrexate concentrations have been measured in 28 children with acute lymphoblastic leukaemia (ALL) following PO administration under standard conditions. Small-intestinal transit time, measured by the time taken for lactulose to pass from mouth to caecum, has been related with methotrexate absorption parameters. Small intestinal transit times ranged from 30 to 240 min. Children with longer transit times had later times of peak methotrexate concentration and tended to have a more erratic methotrexate absorption profile with two peaks. There appears to be an optimal transit time between 90 and 105 min for methotrexate absorption, with both faster and slower small-intestinal transit times producing lower peak concentrations as a fraction of the dose. PMID- 3858015 TI - Hypnosis: alternative to patient anxiety. PMID- 3858016 TI - Knowing your legal rights. PMID- 3858017 TI - Treating cleft lip and palate infants. PMID- 3858018 TI - Communicating with children. PMID- 3858019 TI - Selecting the right computer forms. PMID- 3858020 TI - Caution: nitrous oxide in use. PMID- 3858021 TI - Sexual harassment--impact, ethics and guidelines. PMID- 3858022 TI - Job sharing: is it right for you? PMID- 3858023 TI - Carpal tunnel syndrome: occupational hazard. PMID- 3858025 TI - Team approach. PMID- 3858024 TI - Assuring treatment acceptance. PMID- 3858026 TI - Women and self-esteem. PMID- 3858027 TI - Care and handling of polycarboxylate cement. PMID- 3858028 TI - BEDA: the behaviorally expanded duty auxiliary. PMID- 3858029 TI - Prenatal oral development. PMID- 3858031 TI - How effective is your office management? PMID- 3858032 TI - The assistant's mobile cabinet: efficient, organized, utilized. PMID- 3858030 TI - Toxic shock syndrome. PMID- 3858033 TI - How to interpret a prescription. PMID- 3858034 TI - Managing dental fear: a team approach. PMID- 3858035 TI - [Jaw surgery in the treatment of multiple-injury patients]. PMID- 3858036 TI - [New combined radiologic-surgical treatment possibilities for inoperable tumors of the maxilla]. PMID- 3858037 TI - [Purulent arthritis of the temporomandibular joint]. PMID- 3858038 TI - [Apical osteitis and herpes zoster in the 3rd branch of the trigeminal nerve. A case history]. PMID- 3858039 TI - [Improvement of zygomatic arch representation using compensating screens]. PMID- 3858040 TI - [Granulomatous cheilitis]. PMID- 3858041 TI - [A temporo-retroauricular visor flap as a substitution graft after radical parotidectomy]. PMID- 3858042 TI - [Testing the therapy-dependent prognosis index (TPI) of DOSAK with patients from the Hospital for Oral Surgery in Halle]. PMID- 3858043 TI - Prostaglandin E2 synthesis by human primary and metastatic bone tumors in culture. AB - Prostaglandin E2 (PGE2) is known to stimulate osteolysis in vitro and has been implicated in mediating bone resorption in several animal and human tumors. Little attention has yet to be directed toward local humoral control (including PGE2) of bone resorption in primary and metastatic bone tumors. For investigation of whether histologically identified areas of osteolytic or osteoblastic bone tumors differentially secrete PGE2 under in vitro conditions, culture media from explants of central and peripheral areas of tissue were sterilely collected from 13 surgical specimens of primary and metastatic bone tumors and assayed for (PGE2) radioimmunoassay. The results indicate a marked heterogeneity in the concentration of immunoreactive (I-PGE2) synthesis by tumors of different as well as similar cell type. PGE2 production was time-dependent in culture, and at 72 hours substantial increases were apparent compared to cultures of non-neoplastic fascia controls. Significantly higher levels of I-PGE2 were found in cultures derived from "bone-destructive" tumors. No difference in I-PGE2 synthesis was found between explants of peripheral versus central tissue of the same tumors. PGE2 is synthesized in culture by bone tumors characterized as destructive of bone at higher levels than "bone-forming" tumors, and this synthesis is inhibited by indomethacin. PMID- 3858044 TI - Evaluation of in vitro antibacterial activity of enoxacin: comparison with other orally absorbed antimicrobial agents, proposed disk diffusion test interpretive criteria, and quality control limits. AB - The antibacterial activity of enoxacin was assessed by a standard microdilution susceptibility test method against 6,096 consecutive clinical isolates at four clinical laboratories and compared with that of norfloxacin and cefaclor. Its activity was comparable to that of norfloxacin; both inhibited over 90% of Enterobacteriaceae at 0.5 micrograms/ml. Resistance to enoxacin [minimum inhibitory concentration (MIC) greater than 4 micrograms/ml] was observed in only 18 of 4,076 Enterobacteriaceae (0.5%, 36 of 650 nonfermentative gram-negative bacilli (5.5%), and 6 of 836 staphylococci (0.7%). Relatively poor activity was observed against streptococci. An additional 618 selected clinical isolates were tested with enoxacin and were compared with nine other orally absorbed antimicrobial agents. The greatest activity was observed with enoxacin, norfloxacin, and cotrimoxazole, but some difference were noted with individual species. Results of enoxacin disk diffusion susceptibility testing of 487 isolates were correlated with the MICs, analyzed, and interpretive criteria were determined. With MIC breakpoints of: susceptible = less than or equal to 2.0 micrograms/ml, intermediate = 4.0 micrograms/ml, and resistant = greater than 4.0 micrograms/ml, the corresponding preliminary disk diffusion zone diameter breakpoints for the 10-micrograms enoxacin disk are: susceptible greater than or equal to 18 mm, intermediate 15-17 mm, and resistant less than or equal to 14 mm. Quality control zone diameter limits were determined for three standard QC organisms. PMID- 3858045 TI - Bullous change by CT heralding metastatic sarcoma. AB - The association of spontaneous pneumothorax with metastatic osteosarcoma is well known. Small blebs and bullous change can be easily detected in the lungs by computed tomography. In patients with known sarcomas, blebs and bullae may appear as the first or early manifestation of metastatic disease (or concurrent with the disease) as illustrated by the three patients presented here with three different types of sarcomas. The literature has been reviewed as to the etiology of spontaneous pneumothoraces occurring in metastatic sarcomas and the relationship of bleb and bullae formation to these spontaneous pneumothoraces is discussed. PMID- 3858046 TI - Combined management of mucogingival defects with citric acid root conditioning, lateral pedicle grafts, and free gingival grafts. PMID- 3858047 TI - Allergy to lidocaine and mepivacaine: report of a case. PMID- 3858048 TI - Idiopathic internal resorption: report of an unusual case. PMID- 3858049 TI - Clinical virology of the head and neck. PMID- 3858050 TI - The computer craze and dental data. PMID- 3858051 TI - Some aspects of emergency treatment of complete denture patients. PMID- 3858052 TI - The canine platform: a modified method for posterior tooth eruption. PMID- 3858053 TI - Dental care concerns common to Great Britain, Sweden, and the United States. PMID- 3858054 TI - The TMJ: can dentistry really help? PMID- 3858056 TI - Negligence, malpractice and things that go bump in the court! PMID- 3858055 TI - UOP's least known famous library. PMID- 3858057 TI - Malpractice: strategies for the practitioner. PMID- 3858058 TI - Ergonomics: the human factor in office design. PMID- 3858059 TI - Influence of human chorionic gonadotropin and prostaglandins on the steroid metabolism of the perfused human placenta. PMID- 3858060 TI - Systemic isotretinoin treatment of oral and cutaneous lichen planus. AB - Lichen planus of the skin and mucous membranes may be disabling. Severe pruritus or bullous lesions may be incapacitating when they occur while erosive oral lesions may be extremely painful. Various treatment modalities have been attempted including corticosteroids (parenteral, intralesional, and topical) and photochemotherapy. Recent successful therapeutic trials of topical retinoic acid and oral etretinate have been completed. Two patients with cutaneous and severe erosive oral lichen planus unresponsive to conventional therapies responded to a trial of oral isotretinoin with prompt and successful remission of cutaneous and oral lesions. This suggests that systemic isotretinoin may have a unique position in the treatment of mucous membrane lichen planus that is refractory to conventional therapies. PMID- 3858061 TI - Cytogenetic observations on two ovarian carcinomas with double minutes, one with a 6q- marker chromosome. AB - A high number of structurally altered marker chromosomes was found in two cases of ovarian carcinoma. Even by the application of different staining methods it was not possible to identify all the chromosomes. No evidence for the existence of a translocation between chromosomes 6 and 14 was found, which seems to be a specific abnormality characteristic of papillary serous cystadenocarcinomas of the ovary. It is of interest that double minutes were present in both cases. This offers further evidence for the assumption that double minutes are not infrequent in carcinomas. Their orthodox mitotic behaviour leads to high karyotype variability (number of double minutes/cell), and may be of particular importance for tumour biology. The methodological and cytogenetic implications of the results are discussed. PMID- 3858062 TI - [Bilateral eumorphic 4th molar in the maxilla and the mandible]. PMID- 3858063 TI - [Ultrastructural study of gingival tissues irradiated with the Helium-Neon soft laser]. PMID- 3858064 TI - [Concerning "The molar of Madam M..."]. PMID- 3858066 TI - [Dental therapeutics according to medical authors at the end of the Middle Ages]. PMID- 3858065 TI - [Research on the effectiveness of metronidazole in the treatment of root infections]. PMID- 3858067 TI - [Evaluation of the cytotoxicity of solutions on pure cultures of mouse "NM" fibroblasts and ovarian carcinoma cells]. PMID- 3858069 TI - [Endodontic therapy]. PMID- 3858068 TI - [Craniomandibular dysfunction]. PMID- 3858070 TI - [Self medication, a reality: its significance, its limits, its risks]. PMID- 3858071 TI - [Clinical experiments with grinazole]. PMID- 3858072 TI - [A drug: oxygen--O2]. PMID- 3858073 TI - [Cell biological behavior of the squamous cell line (Tca 8113) of tongue carcinoma in human: a time-lapse cinemicrographic observation]. PMID- 3858074 TI - [Experimental study on the compound polytetrafluoroethylene (PTFE) and its clinical application]. PMID- 3858075 TI - [Preventive orthodontic treatment of open-bite malocclusion]. PMID- 3858076 TI - [Foramen rotundum and maxillary anesthesia]. PMID- 3858077 TI - [Evaluation of the treatment of oral lichen planus by activating blood circulation and eliminating stasis]. PMID- 3858078 TI - [Dental calculus: analysis with infrared and emission spectroscopy]. PMID- 3858080 TI - [Principle and application of an edgewise appliance]. PMID- 3858079 TI - [Relation between trigeminal neuralgia of the first branch of the trigeminal nerve and pathological cavity of the jaws]. PMID- 3858081 TI - [Upper cavity arthrography of the normal adult temporomandibular joint]. PMID- 3858082 TI - [Survey of dental, dental arch and facial forms of 5 nationalities in the northwest district]. PMID- 3858083 TI - [Lateral cephalometry in 100 Harbin children with normal occlusion]. PMID- 3858084 TI - [Disinfection of hand-pieces by oil baths in preventing hepatitis B and its application]. PMID- 3858085 TI - [The curative effect of neurexeresis on primary trigeminal neuralgia]. PMID- 3858086 TI - [Experimental inhibition of Streptococcus mutans using honeysuckle chewing gum]. PMID- 3858087 TI - [The oral status of 509 aged people in Zhangjiakou]. PMID- 3858088 TI - [Application of a hematoporphyrin derivative (HpD) and the laser technic in diagnosis and treatment of oral tumors]. PMID- 3858089 TI - Denaturation and condensation of DNA in situ induced by acridine orange in relation to chromatin changes during growth and differentiation of Friend erythroleukemia cells. AB - DNA in situ is progressively denatured when the cells or nuclei are treated with increasing concentration of acridine orange (AO). This transition can be monitored by flow cytometry as a decrease in green fluorescence. The complexes of denatured DNA and AO undergo immediate condensation and aggregation; this step is manifested by appearance of red luminescence and formation of precipitates that can be detected by electron microscopy. The precipitates form preferentially in heterochromatin as well as in ribosomes and polysomes. Their formation and further aggregation affects cellular light scatter properties in both the forward and right-angle direction. The AO-induced DNA denaturation and condensation was studied in nuclei of Friend erythroleukemia cells from exponentially growing, differentiated or quiescent cells. The DNA in nuclei of quiescent cells, from plateau-phase cultures, was the most sensitive to denaturation; it denatured (measured by changes in luminescence) at an AO concentration between 50 and 80 microM with the midpoint of the transition (Cd) at 70 microM. DNA in nuclei of differentiated cells (dimethyl-sulfoxide-induced erythroid differentiation) was more resistant (Cd = 77-83 microM), whereas DNA in exponentially growing cells was the most resistant (Cd = 86 microM). Extraction of proteins with 0.1 M HCl at 0 degree C abolished the differences between the cells and shifted the transition to a lower AO concentration (Cd = 46 microM). For comparison, the midpoint transitions representing condensation of free, nucleic acids measured as light scatter changes occurred at 13, 22, 31 and 53 microM of AO, for rRNA, tRNA, and denatured and native-calf thymus DNA, respectively. Denaturation and condensation of DNA, which can be induced by AO either in isolated nuclei or viable permeabilized or fixed cells provides a new approach to discriminate cell subpopulations with different chromatin structure by flow cytometry. The molecular mechanisms of this phenomenon are discussed. PMID- 3858091 TI - Effect of masticatory stimulation on dentoalveolar ankylosis after experimental tooth replantation. PMID- 3858090 TI - Effects of aspirin and prostaglandin E2 on interdigestive motility complex and duodenogastric reflux in man. AB - Both increased duodenogastric reflux and chronic aspirin ingestion are associated with the development of gastric ulcers in man. Animal studies suggest aspirin increases duodenogastric reflux. Prostaglandin E2 protects gastric mucosa from the effects of many injurious agents and inhibits gastric motility, but its effect on duodenogastric reflux is unknown. We have studied the effects of aspirin and a synthetic derivative of prostaglandin E2 on duodenogastric reflux during fasting in six normal subjects, while concomitantly monitoring gastrointestinal motility by means of a perfused catheter system. We found that duodenogastric reflux (as measured by bile salt output in gastric aspirates) increased significantly (P less than 0.05) following both the prostaglandin E2 derivative and aspirin. This increase occurred in phases II and III of the interdigestive motility complex. Both drugs were associated with a significant reduction (P less than 0.05) in frequency and amplitude of antral contraction during phase II. Both drugs also induced a significant disruption (P less than 0.01) of phase III, increasing the number of complexes without an antral and duodenal component. These effects of aspirin may be one of the factors predisposing to the gastric mucosal damage associated with aspirin. The prostaglandin E2 derivative protects gastric mucosa by mechanisms other than reducing duodenogastric reflux and ameliorating the motility disturbances caused by aspirin. PMID- 3858092 TI - Periapical tissue responses to dentin and vitreous carbon plugs in apical perforations of dogs' teeth. PMID- 3858093 TI - The radiopaque lesion: a diagnostic consideration. PMID- 3858095 TI - A retrospective study of direct pulp capping with calcium hydroxide compounds. PMID- 3858094 TI - Endodontic treatment of experimental root perforations in dog teeth. PMID- 3858096 TI - Long-term calcium hydroxide treatment of a tooth with iatrogenic root perforation and lateral periodontitis. PMID- 3858097 TI - Paget's disease of the mandible--a review and report of a case. PMID- 3858098 TI - Glycosphingolipids of the globo-series are associated with the monocytic lineage of human myeloid cells. AB - Neutral glycosphingolipids (neutral GSLs) of the human myeloid leukemia cell lines ML-2, ML-3, HL-60 and THP-1-0 were metabolically labeled with [3H]galactose and [3H]glucosamine, and analyzed by high-performance liquid chromatography. They were compared with unlabeled neutral GSLs from purified human granulocytes and monocytes. Neutral GSLs were identified by retention times and the structures were further confirmed by degradation with specific exoglycosidases. Two neutral GSLs of the globoseries, globotetraosylceramide and globotriaosylceramide were found in monocytes and the monoblastic leukemia line THP-1-0. The leukemia derived cell-lines, ML-3 and HL-60, representing successively earlier stages of myeloid differentiation, contained respectively less neutral GSLs of the globoseries and an increasing proportion of (neo)lacto neutral GSLs. Granulocytes and the cell line ML-2 contained almost exclusively neutral GSLs of the (neo)lacto series. PMID- 3858099 TI - Electron microscopy of the Mo-Fe-protein from Azotobacter vinelandii nitrogenase. AB - The quaternary structure of the Mo-Fe-protein from Azotobacter vinelandii has been studied by electron microscopy. A model of the molecule of the Mo-Fe-protein has been proposed: two alpha subunits are displaced relative to two beta subunits along a twofold axis, so the molecule can be characterized by the point-group pseudosymmetry 222. Computer averaging of the images showed that one of the projections of the molecule could be characterized by twofold rotational symmetry. Micrographs of nitrogenase recombined complex (Mo-Fe-protein + Fe protein) have been obtained. They showed particles close in size and form to the Mo-Fe-protein molecule. Therefore, it has been proposed that the Fe-protein could be situated in the central cavity of Mo-Fe-protein. PMID- 3858100 TI - Unusual complications of central venous catheterization in thrombocytopenic patient. AB - An unusual complication from subclavian venous catheterization is reported. A 63 year old white female with thrombocytopenia following chemotherapy for erythroleukemia developed mediastinal haematoma after inserting a left subclavian central catheter. Subsequent bilateral pleural effusion and right sided pneumothorax supervened and led to respiratory distress requiring multiple therapeutic thoracenteses. PMID- 3858102 TI - Studies of sympatho-adrenal reactivity and adrenoceptor function in bronchial asthma. AB - The aims of the present studies were to investigate sympatho-adrenal mechanisms and adrenergic receptor function in patients with bronchial asthma and healthy subjects. The patients were characterized with regard to the occurrence of exercise-, histamine- or allergen-induced bronchoconstriction in pre-trial tests. All medication was withdrawn during at least one week prior to the trials, in order to eliminate the influence of treatment. The patients were asymptomatic and had basal PEFR greater than 70% of predicted values prior to the trials. Healthy control subjects were matched with regard to sex and age. Alpha- and beta adrenoceptor responsiveness were studied with improved in vivo-techniques, where different responses were related to plasma concentrations rather than doses of the agonists administered. Sympatho-adrenal reactivity, as assessed by plasma noradrenaline and adrenaline responses, to an orthostatic test and exercise was normal in asthmatic subjects. Surprisingly, there was no plasma catecholamines response to histamine- or allergen-induced bronchoconstriction. High plasma levels of noradrenaline and phenylephrine (by i.v. infusion) had little or no influence on bronchial tone, despite marked cardiovascular effects, in patients with exercise-induced asthma (EIA) or healthy subjects. Elevation of circulating noradrenaline failed to alter bronchial hyperreactivity to histamine in asthmatic patients. The blood pressure responses to infused noradrenaline and phenylephrine were similar in patients with EIA and healthy subjects, but the ensuing bradycardia was more pronounced in the EIA-patients indicating an increased baroreceptor sensitivity in these patients. High, but physiological, plasma levels of adrenaline dilated the airways with regard to end-expiratory flow rates but not Sgaw or PEFR. Furthermore, allergen-induced bronchoconstriction was counteracted by elevation of circulating adrenaline in patients with allergic asthma. These findings indicate that adrenaline may participate in the regulation of airway tone under physiological conditions. Beta 2-adrenoceptor sensitivity was found to be reduced in patients with EIA when assessed by both in vitro and in vivo techniques, while patients with non-exercise induced asthma did not differ from controls in this respect. Lymphocytes from EIA-patients had a reduced cAMP response to isoprenaline. Furthermore, the beta 2-mediated increase in plasma cAMP and the reduction of diastolic blood pressure in response to i.v. isoprenaline infusions were attenuated in the EIA-patients. These results do not seem to be influenced by previous anti-asthmatic drug treatment or the severity of the disease.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3858101 TI - Lymphocyte aging in allophenic mice. AB - Allophenic mice are chimeras which are produced from the aggregation of two genotypically distinct embryos. In this study, embryos from the C57BL/6J and A/J strains were used to produce C57BL/6J----A/J allophenic mice. These strains were chosen because of their markedly different lifespans, their different glucose phosphate isomerase (GPI) isozymes, and their different H-2 haplotypes [C57BL/6J: long-lived, Gpi-1b, H-2b; A/J: short-lived, Gpi-1a, H-2a]. The mice were bled at two month intervals and the composition of their peripheral blood lymphocytes determined at each point from analysis of GPI isozymes and H-2 antigens. It was found that the proportion of long-lived (C57BL/6J) lymphocytes tended to increase with age. Moreover, the total lifespan of the allophenic mice was directly related to the percentage of long-lived lymphocytes in their peripheral blood. PMID- 3858104 TI - Treatment of temporomandibular disc dislocation with a modified orthopedic corrector. PMID- 3858103 TI - A potential difference across mouse ovarian follicle. AB - A small potential difference (antrum positive) has been measured with fine-tipped glass microelectrodes across the epithelial cell layers of the mouse ovarian follicle wall. As ovulation approached the potential in the antrum became more positive compared to the outside. Metabolic inhibitors and locally active hormones also altered the potential difference. The ionic basis and the significance of the potential difference are unknown. PMID- 3858105 TI - Leaf gauge technique. PMID- 3858106 TI - Treatment of skeletal open bite and mandibular retrognathia. PMID- 3858107 TI - [In vitro study of plaque accumulation on the surface of composite filling materials]. PMID- 3858108 TI - [Prosthetic rehabilitation of patients with cleft palate]. PMID- 3858109 TI - [Conference on salt fluoridation]. PMID- 3858110 TI - Infection control in the dental office and laboratory. PMID- 3858111 TI - Child's play: techniques to promote cooperation from the child dental patient. PMID- 3858112 TI - The dental assistant's role in monitoring conscious sedation and general anesthesia. PMID- 3858113 TI - Sitting on an iceberg. PMID- 3858114 TI - An economic analysis of how PPO's may affect the dental assisting profession (Part I). PMID- 3858115 TI - PPOs: scoring points in the busyness game. PMID- 3858117 TI - An update on mercury hygiene. PMID- 3858116 TI - Amalgam in motion. PMID- 3858118 TI - Hepatitis update. PMID- 3858119 TI - The portrayal of women on prime-time television. PMID- 3858120 TI - [Metal-ceramic crowns in the dental office and the dental laboratory]. PMID- 3858121 TI - Can your records withstand the malpractice test? PMID- 3858122 TI - How to avoid problems with partners and associates. PMID- 3858124 TI - Continuing education: maximize your course time. PMID- 3858123 TI - Dental insurance: putting an end to the paper chase. PMID- 3858125 TI - Drugs in dentistry. Sedatives. PMID- 3858126 TI - Total recall keeps your patients coming back. PMID- 3858127 TI - The best way to handle after-hours emergencies. PMID- 3858128 TI - Word-processing: maximize your patient communications. PMID- 3858129 TI - PR for the dental office: turning the public into patients. PMID- 3858131 TI - The World Health Organization. An interview with Ruth Nowjack-Raymer. PMID- 3858130 TI - Drugs in dentistry. Sedatives/hypnotic drugs. PMID- 3858132 TI - Dental knowledge of Israeli schoolchildren. A pilot study. PMID- 3858133 TI - Dental health in Thailand. A conversation with Cheryl Metzger. PMID- 3858134 TI - Patient care coordinator. An innovative program. PMID- 3858136 TI - Carpal tunnel syndrome. An occupational risk to the dental hygienist. PMID- 3858135 TI - Public health education and promotion for caries prevention. The role of dental hygiene programs. PMID- 3858137 TI - Pathways to publications. Part I. PMID- 3858138 TI - Detecting common errors in research design. PMID- 3858139 TI - Whom does the ADHA represent? PMID- 3858140 TI - Pathways to publications. Part II. PMID- 3858141 TI - How a dental museum cultivated my roots. PMID- 3858142 TI - Computerization vs. non-computerization: which team will you join? PMID- 3858143 TI - Are you buying a darling or a dragon? PMID- 3858144 TI - How you can successively select a tax adviser. PMID- 3858145 TI - What can job sharing do for you and your staff? PMID- 3858146 TI - Missionary dentistry expands your clinical horizon. PMID- 3858147 TI - Big business: new dentist on the competitive block. PMID- 3858149 TI - What to look for when locating a practice. PMID- 3858148 TI - Dental XYZ and the rest of the alphabet soup. PMID- 3858150 TI - Hiring the right employee: it takes more than luck. PMID- 3858151 TI - Buying vs. leasing. Should you buy or lease your dental office? PMID- 3858152 TI - How you can master your professional reading. PMID- 3858153 TI - Where will your patients come from? PMID- 3858155 TI - Equipment buying guidelines--your blueprint for success. PMID- 3858154 TI - Outreach programs: students teaching students. PMID- 3858156 TI - To buy or not to buy: that is the question. PMID- 3858157 TI - Termination: making an uneasy task easier. PMID- 3858158 TI - How you can nurture your office productivity. PMID- 3858159 TI - What basic features should system include? PMID- 3858160 TI - Why you need contract protection. PMID- 3858162 TI - Unique ways to use your dental degree. PMID- 3858161 TI - Boost your collections with commandments. PMID- 3858163 TI - Correlate those basic and clinical sciences. PMID- 3858164 TI - Orthodontic intervention as an aid in restorative dentistry. AB - The successful treatment of patients with multiple problems can be achieved with a multidisciplinary approach. Orthodontics as part of an integrated treatment plan can significantly enhance a favorable result. The intent of this article was to provide insight into the range of treatment options available. PMID- 3858165 TI - The new generation amalgam alloys. Clinical considerations. AB - There is a good deal of current speculation that composite resin materials will shortly replace silver amalgam as routine posterior restoration systems. This article provides guidelines in the selection and clinical handling of the new generation high copper amalgam alloys. PMID- 3858166 TI - Composite resins. AB - The interest in posterior composite resins has grown rapidly during the last several years. Much of the interest has been initiated by a demand for esthetic dentistry. Some has developed as a result of a concern by some for mercury sensitivity. Despite their growing popularity, a number of major problems persist. Some of these deal with the restorative material, whereas others relate to the clinical techniques associated with their use. Before the clinician considers the use of composite resins in posterior teeth, he or she should be familiar with conditions that strongly influence clinical behavior. PMID- 3858167 TI - Special considerations for restorative dentistry in geriatric patients. AB - Restorative dental procedures for the elderly patient should be conservative. The principal objectives should be to do what is most constructive to keep the dental structures intact, functional, comfortable, and cosmetically pleasing. The dentist has the responsibility to do whatever is possible or most expedient to improve and maintain the quality of life for the aged. PMID- 3858168 TI - Passing the laboratory on (2). PMID- 3858169 TI - Running a dental laboratory. Part five: the premises. PMID- 3858170 TI - Computer classroom--Part 1. Microcomputers: new members of the dental laboratory team. PMID- 3858171 TI - Focus on furnaces. PMID- 3858173 TI - Computer classroom. Part 2: down to business... PMID- 3858172 TI - Running a dental laboratory. Part six: employers and the law. PMID- 3858174 TI - Some business problems. PMID- 3858175 TI - An interchangeable simple-hinge articulator. PMID- 3858176 TI - A technique for the production of opening activators using Triad VLC acrylic. PMID- 3858177 TI - The use of Duralay resin as a die material for long, narrow, anterior crown and bridge dies. PMID- 3858178 TI - The use of prelocation in bimaxillary osteotomy procedures. PMID- 3858179 TI - Hypnosis in dentistry. PMID- 3858180 TI - The Belle Maudsley memorial lecture 1984. The bionator: its use and "abuse". Part 1. PMID- 3858181 TI - Will a three-allele model of inheritance explain the HLA data for type 1 (insulin dependent) diabetes? AB - The HLA data from nine published studies on Type 1 (insulin-dependent) diabetes were examined to see whether a three-allele model for the inheritance of Type 1 diabetes at the HLA-associated locus could be rejected. None of the data rejected the three-allele model. The data were also examined to see whether they would reject a recessive model. Out of the nine data sets, five rejected a recessive and four did not. The p value for all studies together rejected a recessive. Two of the data sets allowed us to test the hypothesis that multiplex and simplex families would exhibit different modes of inheritance. Multiplex data from both data sets rejected recessive inheritance while the multiplex data from only one data set also rejected three-allele inheritance. The results of assuming a recessive model and analyzing the data from simplex families led to different results from the two data sets. In addition, data from a non-European population were examined and found to reject both recessive and three-allele inheritance for Type 1 diabetes at the HLA-associated locus. PMID- 3858182 TI - Selective expression of adult beta-globin but not embryonic y-globin genes in hybrids of mouse yolk-sac and erythroleukemia cells. AB - Hybrid cells from mouse erythroleukemia and yolk-sac cells from 12-day-old mouse embryos were formed, and the expression of adult beta-globin and embryonic y globin genes was examined. In these hybrid cells, hemoglobin synthesis could be induced by the addition of dimethylsulfoxide. The adult beta-globin genes from both parental chromosomes were expressed, but embryonic y-globin genes were not. These results suggest that the expression of adult genes dominates that of embryonic genes. PMID- 3858184 TI - Sjogren's syndrome. PMID- 3858183 TI - Fear and anxiety reduction in the geriatric dental patient. PMID- 3858185 TI - Contemporary treatment strategies for root surface dental caries. PMID- 3858186 TI - Mandibular dysfunction related to dental, occlusal and prosthetic conditions in a selected elderly population. PMID- 3858187 TI - Oral dyskinesia of the aged. I. Clinical aspects. PMID- 3858188 TI - Symptoms and the decision to seek professional care. PMID- 3858189 TI - Early plaque formation in young and elderly individuals. PMID- 3858190 TI - Addition to labeling of cholestyramine. PMID- 3858191 TI - Central control of intestinal motility by prostaglandins: a mediator of the actions of several peptides in rats and dogs. AB - The effect of intracerebroventricular and intravenous administrations of prostaglandin E2 on gastrointestinal motility were investigated in conscious rats and dogs using electrodes and strain gauges, respectively. Injections were performed during the fed state and the motor changes were compared with those after intracerebroventricular administration of calcitonin, neurotensin, and (D Ala2, Met5) enkephalinamide. Intracerebroventricular administration of prostaglandin E2 (0.5 micrograms) to fed rats restored the migrating myoelectric complex for 67 +/- 16 min. A migrating myoelectric complex-restoring effect was also observed after intracerebroventricular administration of calcitonin (0.02 U) and neurotensin (80 ng). This effect was blocked by previous intracerebroventricular administration of indomethacin (0.25 mg). Administered centrally to dogs but not intravenously at a 10-fold greater dose, prostaglandin E2 (0.1 microgram/kg) reduced (52.8%) the duration of the jejunal postprandial motor state similarly to that observed after intracerebroventricular administration of calcitonin (0.1 U/kg), neurotensin (0.1 microgram/kg), and (D Ala2, Met5) enkephalinamide (0.1 microgram/kg). These effects of calcitonin and neurotensin were abolished 4 h after an intramuscular injection of indomethacin (2 mg/kg), whereas those of (D-Ala2, Met5) enkephalinamide persisted. These results suggest that (a) prostaglandins act centrally to control the pattern of intestinal motility in both rats and dogs and (b) calcitonin and neurotensin when injected intracerebroventricularly affect the intestinal motor profile probably by stimulating prostaglandin release within the brain. PMID- 3858192 TI - [Results of polychemotherapy of lymphoblastic leukemia in children]. PMID- 3858193 TI - [Significance of prognostic factors in the evaluation of resistance to therapy of patients with lymphoblastic leukemia]. PMID- 3858194 TI - [Results of treatment and prevention of neuroleukemia in children]. PMID- 3858195 TI - [Course of acute lymphoblastic leukemia with marked initial hyperleukocytosis at a young age]. PMID- 3858196 TI - [Current state of the problem of treatment of acute leukemia]. PMID- 3858197 TI - [Prognosis and treatment of lymphosarcoma in the leukemic transformation stage of acute leukemia]. PMID- 3858198 TI - Microbiologically monitored and modulated periodontal therapy. PMID- 3858199 TI - Journey to quality in a changing dental environment. PMID- 3858200 TI - Hypoplasia and hypodontia of the maxillary lateral incisors. PMID- 3858201 TI - Stability of hydrogen peroxide as a bleaching agent. PMID- 3858202 TI - Hypertensive episode in the dental office. PMID- 3858203 TI - Mucosal lumps in a newborn. PMID- 3858204 TI - Parotid enlargement and tooth erosion. PMID- 3858205 TI - Effect of temperature, 17 alpha-hydroxy-20 beta-dihydroprogesterone and prostaglandin F2 alpha on carp oocyte maturation and ovulation in vitro. AB - Two series of experiments were carried out. In series I, studies were conducted on the effect of 17 alpha-hydroxy-20 beta-dihydroprogesterone (17 alpha 20 beta P; 1 microgram/ml of substrate) on the migration of germinal vesicle (GV) and its breakdown (BD) in the oocytes of carp ovarian fragments, kept at 5, 10, 15, 20, and 25 degrees C. For investigations ovarian fragments were taken both from intact mature females and from those injected with carp hypophysial homogenate (chh) at a dose of 1 mg/kg. It was found that GV migration and GVBD occurred at 15-25 degrees C. Based on the results obtained, it appears that GV migration proceeds optimally at 15 degrees C, whereas GVBD requires higher temperatures (20 25 degrees C), although at times it may also take place at 15 degrees C. In series II, studies were conducted on the effects of exogenous prostaglandin F2 alpha (PGF2 alpha) on carp oocytes ovulation in vitro in the ovarian fragments kept at 5, 10, 15, 20, and 25 degrees C for 24 and 48 hr. It was found that the temperatures in the range studied had no statistically significant effect on the ovulation process induced in vitro by exogenic PGF2 alpha added to the medium. The mechanisms of the final stage of carp oocytes maturation and ovulation are discussed. PMID- 3858206 TI - Monoclonal antibody defines CA 19-9 in pancreatic juices and sera. AB - In a retrospective study pancreatic juice samples (n = 213) and corresponding serum samples (n = 110) were assayed for their concentration of monoclonal antibody defined CA 19-9/GICA (gastrointestinal cancer associated antigen). Serum CA 19-9 values were found to be good diagnostic and discriminating markers for pancreatic disorders and were raised (greater than 50 u/ml) in more than 80% of the pancreatic cancer patients compared to 8.5% of the pancreatitis group and none of the control group. In contrast pancreatic juice CA 19-9 values showed a considerable overlap between groups. On the basis of recent molecular data on the monoclonal antibody 19-9 defined antigen(s)--that is, monosialoganglioside, mucin -it is proposed that the discrepancies between serum and pancreatic juice findings are due to a specific undirected endocrine release of the mucin into sera in pancreatic tumour patients while in pancreatic juices of all diagnostic groups high CA 19-9 activities are either owing to coexistence of glycolipid and mucin or that the latter is a physiologically exocrine product. PMID- 3858208 TI - To the question of leukaemia transmission from man to man by means of parenteral application of leukaemic blood: report of a case and survey of the literature. AB - During a diagnostic collection, leukaemic blood was applied intramuscularly to a nurse. She has been in full clinical health for more than two years. The reported accidents or intentional attempts at human leukaemia transmission are discussed and it is concluded that until now human leukaemia has not been transmitted by any way. PMID- 3858207 TI - Acute myeloid leukemia in childhood: 12 years experience of treatment in Hungary. AB - During the 12-year period between 1971 and 1982 leukemia was diagnosed in 759 children in Hungary. Of these, 123 (16%) had acute myeloid or myelomonocytic leukemia. This corresponds to an annual incidence rate of 6.15 cases per 10(6) children. Analysis of the presentation symptoms at diagnosis showed a higher incidence of septic signs but otherwise no difference to those in acute lymphoid leukemia. Treatment schedules were intensified successively in stepwise fashion. Remission rates rose from 34% to 66%, and remission lengths also improved. Of the prognostic factors analyzed, initial WBC count in excess of 50 G/1 was found to confer bad prognosis, while the other factors had no significant effect on disease-free survival. PMID- 3858209 TI - [The psychology of sucking habits]. PMID- 3858211 TI - [The lower lip as an indicator of orofacial dyskinesias]. PMID- 3858210 TI - [Orofacial dyskinesias and changes in the nasal, naso- and oropharyngeal airways]. PMID- 3858212 TI - [Modification of mandibular growth by various appliances]. PMID- 3858213 TI - [Imaging of the form and structure of the mandible by computed tomography]. PMID- 3858215 TI - [Elucidation of anthropological methods as an instrument for determining the typologically normal external anatomy of the European or Caucasoid facial system. III. The use of anthropometric methods]. PMID- 3858214 TI - [Periodontal and alveolar reactions to tipping dental loading--an experimental animal study]. PMID- 3858216 TI - JCAH assesses quality of care in multihospitals. PMID- 3858217 TI - Determination of alpha 2HS-glycoprotein phenotypes by isoelectric focusing and immunoblotting: polymorphic occurrence of HSGA*5 in Okinawa. AB - A print immunofixation is a very useful procedure for the demonstration of alpha 2HS-glycoprotein (HSGA) following polyacrylamide gel isoelectric focusing. However, this technique has the one disadvantage of requiring a large volume of expensive antiserum. In this paper an alternative detection system is presented which involves the non-electric transfer of HSGA from a focused gel to a nitrocellulose filter and the immunologic detection of HSGA immobilized on nitrocellulose. Using this method the distribution of HSGA polymorphism in the Nepalese and Japanese populations was investigated. All the populations tested were found to lack the common HSGA*3 of the Caucasians. A rare HSGA*5 in Honshu, a main island of Japan, was observed at polymorphic frequency in Okinawa, Southern Japan. PMID- 3858218 TI - Mapping X-linked ophthalmic diseases: II. Linkage relationship of X-linked retinitis pigmentosa to X chromosomal short arm markers. AB - X-linked retinitis pigmentosa (XLRP) is a series of hereditary dystrophic diseases of the retina that occur in three clinically distinguishable variants: the classic form (McK31360), a type known as choroidoretinal dystrophy (McK30330), and a variant with golden-metallic or "tapetal" reflex in the heterozygote (McK30320). Controversy exists as to whether these phenotypic differences are due to clinical variability in disease expression, heterogeneity in disease alleles at a single locus, or a multiplicity of loci for XLRP. We have studied a single large kindred segregating for XLRP with the metallic fundus reflex in the heterozygote with restriction fragment length polymorphisms (RFLPs) from the short arm of the human X chromosome, and found measurable linkage to DXS7 (theta = 12.5 cMorgans at LOD = 2.5), the same RFLP previously shown by others to be tightly linked to the other forms of XLRP at theta = 3 cM. Although these estimates appeared to be different, each fell just within the 95% probability interval of the other and, therefore, were insufficient to prove or disprove that the metallic sheen form of XLRP is allelic with other forms of XLRP. Additional RFLPs at the DXS43 and the ornithine transcarbamoylase loci provided three-point crosses for determining the relative positions of DXS7 and XLRP, and supported an order that placed this form of XLRP distal to DXS7 on the Xp. Until the question of genetic heterogeneity is resolved, careful phenotypic characterization of the clinical type of XLRP present in families being used for linkage analyses is advisable. PMID- 3858219 TI - Multiallelic restriction fragment polymorphisms in genetic counseling: population genetic considerations. AB - The use of selectively neutral, multiallelic molecular markers to trace the transmission of tightly linked genes is examined theoretically for all genetic counseling situations in which the diagnosis of deleterious progeny is desired. Formulae are computed in terms of the gametic frequency distribution in the population, for the expected fraction of matings (alpha i) which allow exact diagnosis on the basis of the marker alleles transmitted, assuming an arbitrary number (n) of alleles segregating at the marker locus and possibly nonrandom associations between the loci. In each case, it is shown that the diagnostic value of a multiallelic marker increases as n increases, with approximately 1-1/n matings informative, on average. PMID- 3858220 TI - A sero-biochemical genetic study of Jalari and Brahmin caste populations of Andhra Pradesh, India. AB - Blood specimens from Jalari and Brahmin caste populations of Andhra Pradesh, India, were examined for blood groups, red cell enzymes, and serum proteins. Of 33 genetic loci studied, 16 were observed to be invariant among both the castes, while common polymorphism or rare variants were observed in one or both populations for the other loci. Three rare heterozygotes at the phosphoglucoisomerase locus, two different peptidase A variants occurring once each and single cases of rare 6-phosphogluconate dehydrogenase and transferrin variants were recorded. Also a few cases of hemoglobin AS and anhaptoglobinemia were observed. The difference in rare variants between the two castes is conspicuous but large differences in their gene frequencies at the polymorphic loci were not observed. It is pointed out that the frequency of rare variants in the tribal and caste populations of Southern India appears to be higher than observed in temperate-dwelling civilized populations. PMID- 3858222 TI - [How to carry out an epidemiological survey from simple information]. PMID- 3858221 TI - Growth of human basophil lines derived from chronic myelocytic leukaemia cells in vitro: ultrastructure and X-ray microanalysis studies. AB - Mononuclear cells from the peripheral blood of patients with chronic myelocytic leukaemia were grown and expanded in liquid culture in the presence of Con A conditioned medium. An accelerated development of cells of the basophilic lineage was observed and resulted in the appearance of 85% mature basophils after 14 days of incubation. Transmission electron microscopy of developing basophils showed changes in the nucleus and active granule formation in the cytoplasm. By scanning electron microscopy, the immature cells were relatively smooth in comparison with the mature basophils which showed membranous microvilli. The chemical content of the cells at different days of culture was detected by X-ray microanalysis. Immature cells were characterized by a high level of phosphorus with a low level of sulphur. As maturation progressed, the amount of phosphorus decreased, while the level of the sulphur increased, reaching its highest peak in the mature basophils. The different amount of sulphur found in the cells during the maturational process most probably represents the amount of heparin located in the cell granules. This finding may be useful for studying the influence of growth factors on the development and differentiation of human basophils. PMID- 3858223 TI - [Dental care in French Polynesia. Reality and prospects]. PMID- 3858224 TI - [Relation between amebiasis and the oral mucosa]. PMID- 3858225 TI - [Relations between the dental office and the laboratory: role of the assistant and the technician]. PMID- 3858226 TI - The rationale for caries prevention through the use of sugar substitutes. AB - The emergence of S. mutans in the plaque flora appears to have depended upon the ability of the organism to sequester sucrose from dietary sources, particularly from between-meal, snack-type foods. S. mutans appears to have a pH optimum at about the pH required for tooth solution to begin. This specialization which makes S. mutans cariogenic, also makes it vulnerable to dietary regimens that contain few or no sucrose snacks. As snacks are consumed by youngsters, primarily for pleasure, the use of pleasant tasting sucrose substitutes, that cannot be fermented by the plaque flora and especially by S. mutans, constitutes a viable tactic for caries control. The potential of this approach was demonstrated by the 80 per cent reduction of caries relative to a sucrose control which was observed with a xylitol chewing gum in the Turku study. PMID- 3858227 TI - The effect of sweeteners on acid production in plaque. AB - In studies of the pH response of dental plaque in situ to rinses with conventional sugars, glucose and maltose give similar falls in pH, and fructose only slightly smaller effects compared with sucrose. Lactose and galactose are less acidogenic, while the pH response to glucose syrups varies according to their composition. Of the sugar alcohols, sorbitol, mannitol, maltitol and lactitol are all slowly fermented to acid by oral bacterial, and xylitol is virtually non-fermentable. Acid formation in plaque by fermentable sugar alcohols can be too slow to overcome the buffering power of plaque and saliva and plaque pH can rise following exposure to these compounds. Lycasin, a synthetic sweetener containing sorbitol, maltitol and some higher sugar alcohols gives effects similar to its major constituents. Palatinit, L-sorbose and trichlorogalactosucrose are of low acidogenicity, but coupling sugar is more fermentable and can give rise to a substantial pH response, albeit less than sucrose. Non-nutritive intense sweeteners may affect plaque pH by their sialogogue effects. PMID- 3858228 TI - Fluoride in sugar. AB - Results of caries model studies in vitro and in animals suggest that the tooth protective potential of fluoride may be best utilized if fluoride is brought to the local caries milieu at the moment of each caries attack. Two clinical trials performed so far indicate that a reduction in caries increment of about 40 per cent can be obtained within 3 years through small (0.5-1.0 mg) daily intakes of fluoride when it is incorporated in highly cariogenic sucrose products or in tablets having a sucrose base. When incorporated in sucrose products, fluoride caused a complete arrest of caries during the third year. There was substantial accumulation of the supplemental fluoride in surface and subsurface enamel beneath the plaque fermenting the F-supplemented sucrose. This may be one of the preventive mechanisms involved. In plaque fluid, the supplemental fluoride, together with fluoride released from the plaque material and by the action of acid on the surface enamel of high fluoride content, may strongly reduce further enamel dissolution and promote its remineralization. Further metabolism of the plaque bacteria including their acid production may also be inhibited. Among the many advantages of using this principle are that: the supplemental fluoride in sugar automatically seeks the caries risk subjects who use sugary products; the amount of fluoride needed per kg of sugar may remain low and thus the risk of excessive intake of fluoride may also be low; the technical process is low in cost and easily performed; and the products are easily distributed nationwide. Furthermore, non-fluoridated sugary products may still be distributed to those who may continue to prefer them. PMID- 3858230 TI - The implications of changing patterns in oral health for the general practice of dentistry. AB - Recent reports from several developed countries have shown reductions in caries prevalence, especially amongst children. As a result of these changes, dental practice surveys show that dentists now work fewer hours at the chairside and see fewer patients. There has been a decline in the time patients have to wait for appointments. There is anxiety amongst general dental practitioners that their income is reducing. The school dental service in the developed countries would be the first casualty of the caries-free society, and the reduction in demand for the services of school dental nurses has led to the closure of some training institutions. If the caries decline persists, the volume of restorative work will fall and there will be a shift of emphasis to periodontal care and geriatric dentistry. A change of attitude to the utilization of dental auxiliaries is predicted. In the developing countries, a restorative strategy is no answer to the increasing prevalence of dental caries, as most developing countries cannot afford the armamentarium required or its maintenance. The use of dental auxiliaries, especially dental hygienists, may not cope with the worsening picture of oral disease. It is proposed that volunteers recruited from the urban and rural areas be trained as lay health advisors. The prospects for the dentist in most developing countries are those of excessive work load, high cost of dental services and the continued neglect of preventive dental care. PMID- 3858229 TI - Xylitol and caries: the collaborative WHO oral disease preventive programme in Hungary. AB - The aim of this study was to assess the practical value of peroral xylitol at low to moderate dosage as a caries preventive measure. The trial was planned as a field study to test the feasibility of partial sucrose substitution in the relatively uniform conditions expected to occur in institutionalized children. The caries increment in the experimental group (X-group) was compared with the increments in other groups following the systemic administration of fluoride in milk or drinking water (F-group), and conventional dental treatment procedures alone (C-group). Conventional treatment was also provided for children in the X- and F-groups who used in an unsupervised manner a fluoride-containing dentifrice. The dentifrice used by the X-group also contained 10 per cent xylitol. The C group used predominantly fluoride-free dentifrices. At baseline there were 990 children in the study. At the end of the 3-year study period there were 689 subjects. The caries scoring into four main categories was carried out yearly according to WHO criteria. The analysis of the data showed highly significant differences between the X-, F- and C-groups when measuring caries activity as the increment of DMF teeth and tooth surfaces, and also as the increment rate assessing the true caries incidence in a biostatistical sense. These results were obtained in conditions where caries prevalence and incidence continued to be high. The observations indicate that peroral xylitol has a cariostatic effect. PMID- 3858231 TI - Manpower and the future role of dentistry in developing countries. AB - The latest information from the WHO Global Data Bank confirms that oral disease prevalence figures are deteriorating for most of the developing countries. Although, oral diseases are preventable, inadequate application of preventive measures and inappropriate establishment of oral health care delivery systems including the employment of unsuitable oral health personnel categories, may have led to the ineffective control of these problems. There is now a need to consider the types of oral health services actually needed in developing countries and the future role dentistry will need to adopt to ensure that manpower resources adequately meet the requirements of the population. An analysis of the extent and severity of oral diseases and the demands of populations in these countries reveals that the majority of the services required are fundamentally restorative, rehabilitative and preventive. These services could be carried out by various types of dental auxiliaries and non-dental personnel. This approach complies with the strategy of the universal three-level model which will operate by a referral system based on full community involvement at the primary health care level. In this way the ratio of members of the oral health team to population may be calculated on the basis of the most relevant information. Under the supervision of the Oral Health Unit, WHO and the Intercountry Centre for Oral Health, Thailand, health service research is being undertaken to test the possible application of the primary health care approach to the design of an effective oral health delivery system for developing countries. PMID- 3858232 TI - The implications of changing patterns in oral health for dental education. AB - Reports from many countries indicate that there has recently been a significant reduction in the prevalence of dental caries. Survey questionnaires were sent to 131 dental schools in 58 countries to determine the perceptions of dental educators to changing oral disease patterns. The educators were asked to indicate changes which had occurred in their respective curricula relative to the disease trends. They were asked to speculate on future curricular changes. Thirty-six schools in 21 countries replied. Most respondents indicated a decrease in the prevalence of dental caries, but little perception of changes in other oral diseases. Whereas, many adjustments have been made in dental curricula, there is little to indicate that the changes are related to variations in oral disease patterns. A new dilemma faces dental education for there is a need to broaden the scope of skills to be attained by the dental student to support a wide range of dental practice, while maintaining skills in restorative dentistry. More intensive continuous epidemiological studies of oral diseases need to be conducted. Dental school administrators need to be informed about oral disease trends and should adjust their curricula accordingly. PMID- 3858234 TI - The effect of different files on the preparation shape of severely curved canals. PMID- 3858233 TI - Microbiological aspects of some caloric sugar substitutes. AB - Several caloric sugar substitutes are available today, e.g. maltitol, Lycasin, sorbitol, xylitol, palatinit, sorbose, coupling sugar, palatinose, fructose and invert sugar. When evaluating the cariogenicity of these sugar substitutes from a bacteriological point of view, different analytical procedures should be considered. In vitro studies on the capacity of pure oral bacterial strains and dental plaque material to decompose the substitute to acid. Studies on the catabolism of the substitute. Possible adaptation of the oral microflora to metabolize the substitute in vivo as well as in vitro. Studies on any inhibitory effect of the substitute on the microbial activities in dental plaque and on the oral microflora. The capacity of oral bacteria, e.g. Streptococcus mutans, to induce caries in animal experiments should also be considered. Results from such microbiological studies make it possible to classify the caloric sugar substitutes into different groups. The first, most suitable, group seems to consist of xylitol and sorbose. These substitutes are fermented by few oral bacteria and no negative adaptation of the oral flora has been observed. A reducing effect upon dental plaque formation and on acid production from glucose has been reported. A second group consists of maltitol, palatinite, palatinose, sorbitol and Lycasin. These substitutes are fermented by certain groups of organisms within the oral genera Actinomyces, Lactobacillus and Streptococcus. Adaptation of oral bacteria to palatinose and to sorbitol, resulting in a more pronounced acid production, has been observed. No inhibitory effects have been reported. The results from experimental studies suggest that these sugar substitutes have no or little cariogenic action in rodents inoculated with S. mutans.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3858235 TI - The relationship between periodontal and pulpal disease. PMID- 3858236 TI - Bone sequestration following root canal therapy: a case report. PMID- 3858237 TI - Posterior endodontic surgery: anatomical considerations and clinical techniques. PMID- 3858238 TI - Resorption of autotransplanted human teeth: a retrospective study of 291 transplantations over a period of 25 years. PMID- 3858240 TI - Chemotactic effect of enamel matrix. PMID- 3858239 TI - Dynamics of hard tissues--the reaction of the periodontal ligament and mandibular bone to altered occlusion. PMID- 3858241 TI - Bone resorption in periodontal diseases: role of bacterial factors. PMID- 3858242 TI - Clinical endodontic and surgical management of tooth and associated bone resorption. PMID- 3858243 TI - General morphological aspects of resorption of teeth and alveolar bone. PMID- 3858244 TI - Orthognathic surgery--a clinical update. PMID- 3858245 TI - [Uptake and release of GABA by rat brain synaptosomes. 2. Action of Nefopam]. PMID- 3858246 TI - [Biocompatibility of the glass ionomer cements in short-term controls]. PMID- 3858247 TI - [Evaluation of silicone material Zetaflex for dental impressions]. PMID- 3858248 TI - [Connective tissue flap in a case of hypotrophy of the edentulous alveolar crest: clinical indications]. PMID- 3858250 TI - [Radio-opacity of lining cements]. PMID- 3858249 TI - [Radio-opacity of root canal cements]. PMID- 3858251 TI - [2 unusual cases of dental agenesis]. PMID- 3858252 TI - [A new frame for rubber dam]. PMID- 3858253 TI - [Ceramic apatites: comparative microstructure with SEM]. PMID- 3858254 TI - [Mandibular fracture. Analysis of 272 cases]. PMID- 3858255 TI - [Histological evaluation of the use of lasers in the healing of wounds: experimental study]. PMID- 3858256 TI - [Estradiol hormone receptors in human gingiva: preliminary results]. PMID- 3858259 TI - [Osteosynthesis fixation: SEM observations (preliminary note)]. PMID- 3858258 TI - [Use of 904 nm laser in dentistry: 1st clinical experience]. PMID- 3858257 TI - [Epulis (anatomopathologic considerations in 100 cases)]. PMID- 3858260 TI - [HLA antigens in the etiopathogenesis of pemphigus]. PMID- 3858262 TI - Optimum temporomandibular joint condyle position in clinical practice. PMID- 3858263 TI - Root coverage using the free soft tissue autograft following citric acid application. III. A successful and predictable procedure in areas of deep-wide recession. PMID- 3858261 TI - [Experimental evaluation of metallic bone implants in the rat]. PMID- 3858264 TI - The condylar position: in sickness and in health (Oh when do we part?). PMID- 3858265 TI - Changing the teaching of dental anatomy to change the mental habits of dental practitioners. PMID- 3858266 TI - Problems in the evaluation of therapeutic procedures in view of recent periodontal research findings. PMID- 3858267 TI - A classification of marginal tissue recession. PMID- 3858268 TI - The aura. PMID- 3858269 TI - K: a presumed case of telekinesis. PMID- 3858270 TI - An updated report profiling the practicing dentist in Iowa. PMID- 3858271 TI - The etiology and treatment of intrinsic discolorations. PMID- 3858272 TI - Clinical value of CA 19-9 (carbohydrate antigen) in gastrointestinal adenocarcinoma. AB - CA 19-9 and CEA serum levels were determined before and 7 days after surgery in 140 patients with gastrointestinal adenocarcinoma, and in 70 patients with gastrointestinal non neoplastic diseases. CA 19-9 test was shown to be positive in 37.9% of colorectal cancer, in 32.6% of gastric cancer and in 77.8% of pancreatic cancer. CA 19-9 test was also shown to be more sensitive for colonic cancer with respect to rectal cancer (40.9% vs. 23.5%). CA 19-9 test is more sensitive and specific than CEA. In particular, the reported results suggest the clinical value of CA 19-9 test in the diagnosis of pancreatic adenocarcinoma and as a suitable parameter in the follow-up of gastrointestinal cancer. PMID- 3858273 TI - Preleukemic syndrome in elderly patients--report of 11 cases. AB - The preleukemic syndrome occurs mainly after middle age. We report 11 patients, aged 62 to 92 years, who presented with weakness, fatigue, malaise and pallor. Eight patients died; survival from the time of diagnosis was between 2 and 21 months. Two of them developed acute myelomonocytic leukemia. A third patient developed Philadelphia chromosome-negative chronic myeloid leukemia within 9 months. Serum unsaturated B12 binding capacity and transcobalamin I were elevated in this patient, preceding the transformation to chronic myeloid leukemia. Five other patients died from sepsis or pneumonia. All patients were anemic, and 10 were leukopenic. Bone marrow was hypocellular in 1 and hypercellular in 10 cases. Chromosomal studies were performed in five patients, with three showing abnormal findings: 47xx, trisomy 8 and a tetraploid karyotype 92xxyy5q-. No cytotoxic treatment should be given during the preleukemic phase until transformation to acute leukemia occurs. Since preleukemic patients are very susceptible to infections, early diagnosis of the condition is important, as is supportive care in the case of surgery. PMID- 3858274 TI - Augmentation of parasympathetic contraction in tracheal and bronchial airways by PGF2 alpha in situ. AB - We studied the effect of exogenous prostaglandin F2 alpha (PGF2 alpha) on airway smooth muscle contraction caused by parasympathetic stimulation in 22 mongrel dogs in situ. Voltage (0-30 V, constant 20 Hz) and frequency-response (0-25 Hz, 25 V) curves were generated by stimulating the cut ends of both cervical vagus nerves. Airway response was measured isometrically as active tension (AT) in a segment of cervical trachea and as change in airway resistance (RL) and dynamic compliance (Cdyn) in bronchial airways. One hour after 5 mg/kg iv indomethacin, a cumulative frequency-response curve was generated in nine animals by electrical stimulation of the vagus nerves at 15-s intervals. Reproducibility was demonstrated by generating a second curve 7 min later. A third frequency-response curve was generated during active contraction of the airway caused by continuous intravenous infusion of 10 micrograms X kg-1 X min-1PPGF2 alpha. Additional frequency-response studies were generated 15 and 30 min after PGF2 alpha, when airway contractile response (delta RL = +2.8 +/- 0.65 cmH2O X 1(-1) X s; delta Cdyn = -0.0259 +/- 0.007 1/cmH2O) returned to base line. Substantial augmentation of AT, RL, and Cdyn responses was demonstrated in every animal studied (P less than 0.01 for all points greater than 8 Hz) 15 min after PGF2 alpha. At 30 min, response did not differ from initial base-line control. In four animals receiving sham infusion, all frequency-response curves were identical. We demonstrate that PGF2 alpha augments the response to vagus nerve stimulation in tracheal and bronchial airways. Augmentation does not depend on PGF2 alpha-induced active tone. PMID- 3858276 TI - Enzymatic sulfation of exogenous high molecular weight glycopeptides by microsomal fraction of the rabbit uterine endometrium. AB - Incorporation of radioactive sulfate into exogenous glycopeptides and glycoproteins from adenosine 3'-phosphate 5'-phospho[35S]sulfate was studied with the microsomal fraction of the uterine endometrium of rabbits. A high molecular weight (Mr greater than 750,000) glycopeptide fraction from rat adenocarcinoma was found to be active as substrate, while several other glycoproteins were not. The rate of incorporation of sulfate was almost proportional to the concentration of glycopeptide substrate, the quantity of microsomal fraction, and the length of the incubation period. Cellulose acetate membrane electrophoresis demonstrated that radioactivity was incorporated into the glycopeptide fraction. The radioactive glycopeptide was excluded from a Sephadex G-50 column, but the 35S radioactivity and oligosaccharides were found in the retarded fractions after treatment with alkali in the absence of sodium borohydride. These observations indicated the presence of an enzyme which catalyzes the transfer of sulfate residue from adenosine 3'-phosphate 5'-phosphosulfate into the carbohydrate units attached to the polypeptide via O-glycosidic linkage. The sulfotransferase activity was measured with the microsomal fractions from the animals which had been treated with female sex hormones. As a result, it was found that estrogen enhances the activity and that progesterone suppresses the effect of estrogen. PMID- 3858277 TI - Manganese-phospholipid-stimulated protein kinase activity of human leukemic cells. AB - A protein kinase system with unusual characteristics was noted in extracts of HL 60 cells using endogenous proteins as substrates. This system exhibited a cation preference for manganese at an optimal concentration of 0.5 mM. Moderate activity was detectable with magnesium at an optimal concentration of 5.0 mM, but calcium was inactive. Activity was markedly stimulated by phospholipid, with phosphatidylglycerol and phosphatidylinositol exhibiting greater activity than phosphatidylserine. In isolated plasma membranes, the major substrate of this system was a 73-kDa protein, while cytoplasmic extracts exhibited larger amounts of a 42-kDa substrate. 73-kDa phosphorylating activity of membranes was comparably active at 0 and 31 degrees C, although in cytosol activity was greater at 31 degrees C. No 73-kDa protein phosphorylation was observed in the presence of Ca2+, Mg2+, and phosphatidylserine. Phosphoamino acid analysis of the 73-kD band revealed phosphothreonine and phosphoserine. The 42-kDa substrate was distinguishable from actin by two-dimensional gel electrophoresis, which disclosed that both major substrates were highly basic in the isoelectric focusing dimension. Protamine and histones (H2B greater than H1 greater than H3) exhibited phospholipid-stimulated phosphorylation in the presence of Mn2+, but phosvitin, casein, and vinculin were not substrates. High levels of phosphorylative activity involving the 73-kDa substrate were noted in nuclear extracts. Complex patterns of increase of this activity were noted in both cytosol and nuclear extracts following induction of differentiation with dimethyl sulfoxide, retinoic acid, or phorbol 12-myristate 13-acetate. This study thus demonstrated the presence of a previously undescribed type of protein kinase activity which exhibited alterations during leukemic cellular differentiation. PMID- 3858275 TI - cDNA cloning of portions of the bacteriophage phi 6 genome. AB - Phage phi 6 has a genome consisting of three pieces of double-stranded RNA. Single-stranded RNA was prepared from phi 6 nucleocapsids by in vitro transcription with the phage RNA polymerase. These transcripts were polyadenylated and used as templates for the preparation of cDNA copies. The resulting DNA was cloned into the PstI restriction nuclease site of plasmid pBR322. Insert-bearing plasmids were annealed to phi 6 RNA to assign the inserts to their proper segments. In this way we identified inserts corresponding to the large, medium, and small segments. Two large overlapping inserts of the small segment constitute the complete complement of the segment as determined by the sequence analysis of the DNA. In vitro coupled transcription and translation showed that the small segment inserts were able to direct the synthesis of the four known genes in the small segment. Two overlapping inserts in the medium segment constitute the entire segment and were shown to direct the in vitro synthesis of two of the three known proteins of the medium segment. Several inserts bearing about one-third the complement of the large segment were also isolated, and one of these directed the synthesis of a peptide that resembles protein P1. Restriction endonuclease maps were prepared for the inserts, and by in vitro synthesis it was possible to refine the genetic map of phi 6. A chimeric plasmid was constructed that combines plasmids pUC8 and RSF1010. Inserts placed on this plasmid were transformed to Pseudomonas phaseolicola, the natural host of phage phi 6. It was possible to refine further the genetic map by complementation of nonsense mutants of phi 6 with the cDNA. PMID- 3858278 TI - Enzymatic formation of prostaglandin F2 alpha from prostaglandin H2 and D2. Purification and properties of prostaglandin F synthetase from bovine lung. AB - Prostaglandin F synthetase from bovine lung was purified 540-fold to apparent homogeneity, as assessed by polyacrylamide gel electrophoreses and ultracentrifugation. The purified enzyme proved to be a monomeric protein with a molecular weight of about 30,500. The enzyme catalyzed not only the reduction of the 11-keto group of prostaglandin D2 but also the reduction of 9,11-endoperoxide of prostaglandin H2 and various carbonyl compounds (e.g. phenanthrenequinone). Experiments using column chromatography, polyacrylamide gel electrophoreses, immunotitration using antibody against the purified enzyme, and heat treatment indicated that three enzyme activities resided in a single protein. Although phenanthrenequinone and prostaglandin D2 competitively inhibited the prostaglandin D2 and phenanthrenequinone reductase activities, respectively, these two substrates were all but ineffective on the prostaglandin H2 (at the Km value) reductase activity up to 14-fold of those Km values. These results suggest that a single enzyme protein purified from the bovine lung catalyzes the reduction of prostaglandin D2, prostaglandin H2, and various carbonyl compounds and that prostaglandin D2 and prostaglandin H2 are metabolized at two different active sites, yielding prostaglandin F2 alpha as the reaction product. PMID- 3858279 TI - Decreased intracellular Na+ concentration is an early event in murine erythroleukemic cell differentiation. AB - A decrease in Na+/K+-pump activity is an early event of Friend murine erythroleukemic (MEL) cell differentiation along the erythroid pathway. This decreased Na+/K+-pump activity has been proposed to be an essential step in differentiation which would cause a rise in intracellular Na+ concentration and then, by means of Na+/Ca2+ exchange, an increase in intracellular Ca2+. An increase in intracellular Ca2+ has been proposed to be essential for induction of differentiation. A critical prediction of this Na+-Ca2+ hypothesis is the rise in intracellular Na+. To test this prediction we have measured intracellular Na+ using a novel triple isotope method involving 3H2O, [14C]sucrose, and 22Na to measure total water, extracellular fluid, and Na+, respectively. 22Na equilibration occurred in less than 10 min. In uninduced cells, intracellular Na+ was 15.2 +/- 2.2 mM (S.D., n = 22); after induction for 14-16 h with dimethyl sulfoxide, intracellular Na+ decreased significantly (p less than 0.0001) to 8.4 +/- 1.4 mM (n = 21). The time course of the decline in intracellular Na+ paralleled that of the decrease in the Na+/K+-pump activity. These results are in direct contradiction to the Na+-Ca2+ hypothesis and suggest that observed changes in Na+/K+-pump activity can be explained solely on the basis of changes in intracellular Na+. The drop in intracellular Na+ is due to a decrease in Na+ influx. We suggest, however, that the decrease in the Na+ influx is not itself an essential event of differentiation, but may be induced by a change in the flux of another ion coupled to Na+. PMID- 3858280 TI - Simultaneous determination of prostanoids in plasma by gas chromatography negative-ion chemical-ionization mass spectrometry. AB - A method for simultaneous determination of prostaglandin E2 (PGE2), prostaglandin F2 alpha (PGF2 alpha), 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha), and thromboxane B2 (TxB2) in plasma was developed. After acidification and addition of 2H- and 3H-labelled internal standards, plasma prostanoids were extracted by reversed-phase cartridges and purified by normal-phase high-performance liquid chromatography. The pentafluorobenzyl, methoxime, trimethylsilyl derivatives were formed. Negative-ion chemical-ionization mass spectra with methane as reagent gas show one intense peak at m/z (M - pentafluorobenzyl). This ion was used for selective-ion monitoring. Prostanoid plasma concentrations (pg/ml) in five healthy volunteers were: PGE2 2.0-10.4, PGF2 alpha 2.2-9.8, 6-keto-PGF1 alpha 0.6 1.8, and TxB2 3.0-45.3. However, there is evidence that the TxB2 values may frequently be falsely high because of ex vivo production during the sampling procedure. PMID- 3858281 TI - Renal hemodynamic abnormalities in patients with short term insulin-dependent diabetes mellitus: role of renal prostaglandins. AB - To determine if renal functional alterations in diabetes mellitus could be related to disturbances of vasoactive systems, renal plasma flow (RPF), glomerular filtration rate (GFR), PRA (basal and stimulated), plasma catecholamine levels, and urinary excretion of prostaglandin E2 (PGE2), 6-keto PGF1 alpha, and kallikrein were determined in 21 patients with insulin-dependent diabetes mellitus (IDDM) of short duration and 15 normal subjects. In 7 additional patients with IDDM and in 4 normal subjects, the effect of lysine acetylsalicylate (LAS; 450 mg, iv) on GFR and RPF was studied. Patients with IDDM had higher RPF and GFR than normal subjects. Plasma norepinephrine and basal and stimulated PRA were significantly lower in IDDM than in the control group [161 +/ 82 (+/- SD) vs. 243 +/- 114 pg/ml, 0.19 +/- 0.20 vs. 1.15 +/- 0.33 ng/ml X h, and 0.93 +/- 0.82 vs. 2.8 +/- 1.73 ng/ml X h, respectively). No significant differences were found in the urinary excretion of PGE2, 6-keto-PGF1 alpha, and kallikrein in the two groups. LAS administration significantly reduced RPF (from 641 +/- 72 to 535 +/- 38 ml/min X 1.73 m2) and GFR (from 168 +/- 25 to 150 +/- 18 ml/min X 1.73 m2) in patients with IDDM, but not in normal subjects. In IDDM patients, there was a close direct correlation between the percent decrease in RPF and GFR induced by LAS and the baseline values of these parameters. The results suggest that in IDDM, there may be an imbalance between the degree of activation of the renin-angiotensin and sympathetic nervous systems and the renal production of PGs. The observation that LAS administration reduced RPF and GFR in these patients suggests that renal PGs are involved in the renal hyperperfusion of IDDM. PMID- 3858282 TI - Cellular and antigenic properties of cultured normal and fetal brain and glioma cells. AB - The immunological and cellular properties of cultured normal and fetal brain cells as well as glioma cells were compared. They were grown successfully in tissue culture media. Results from the growth properties and karyotype analysis indicated that cultured cells from normal and fetal brain tissues were normal and could be passaged limited times. The fetal brain cells had a longer life span than normal brain cells in the culture and their morphology exhibited variations according to cell passages. Two glioma cell lines, designated as G-5-T and G-9-T were established. The G-5-T and G-9-T had different morphology. Both G-5-T and G 9-T formed colonies in the soft agar. However, only G-9-T cells grew as large tumors in nude mice. Neither cell line secreted CEA, AFP and did not contain GFAP and S-100 protein. As measured by the 51Cr cytotoxicity assay, G-9-T but not G-5 T cells possessed D/DR antigens. PMID- 3858284 TI - Dental equipment maintenance. PMID- 3858283 TI - Congenitally missing lateral incisor treatment. PMID- 3858285 TI - Cephalometric spreadsheets. PMID- 3858286 TI - Palatal bar and lip bumper in nonextraction treatment. PMID- 3858287 TI - Horizontal use of Begg brackets. PMID- 3858288 TI - Disinfection of removable appliances. PMID- 3858290 TI - Relationship between alignment conditions of teeth in anterior segments and dental health. AB - The purpose of the study was to examine the association between alignment conditions of anterior teeth and dental health in 15-year-old adolescents. The study group consisted of 74 females and 70 males with 6 anterior teeth in both jaws. The following parameters were assessed: plaque index (P1I), gingival index (GI), probing depth (PD), space index (SpI), filled surfaces (FS), and the NONAS i.e., the number of non-aligned proximal tooth surfaces in each jaw counted on model casts. Statistical examination of the data was performed using chi 2 tests of association and homogeneity and correlation coefficient analyses. In both sexes and both jaws, anterior tooth segments with none or few non-aligned teeth had a more favourable periodontal state than segments with an increased number of non-aligned teeth. Likewise, tooth segments with none or few non-aligned teeth had a reduced frequency of proximal fillings compared to segments with an increased number of non-aligned teeth. In males, the distribution of restorations in the anterior segment of the lower jaw was relatively homogeneous in the 3 groups. PMID- 3858289 TI - Effect of nonsurgical periodontal therapy. V. Patterns of probing attachment loss in non-responding sites. AB - Incisors, cuspids and premolars in 33 patients with advanced chronic periodontitis were treated by plaque control and 1 single episode of supra- and subgingival debridement. The results were monitored by probing attachment level measurements for 6 sites of each tooth every 3rd month during a period of 24 months. A total of 1368 sites were observed. From these were selected 280 "non responding" sites showing 1.0 mm or more loss of probing attachment at 24 months compared to baseline. Scatter diagrams of the sequence of 9 probing attachment recordings obtained during the 24-month study were produced for each of these 280 sites. Study of these scatter diagrams resulted in identification of 7 different patterns of probing attachment change over time. A linear pattern of gradual loss of probing attachment throughout the 24-month observation period was found for 73% of the non-responding sites. Of the less frequently seen patterns, 3 approximated a linear course and 3 were non-linear. Linear analysis of regression as a statistical method to determine attachment loss for individual sites seems to be suitable for sites with linear patterns and for sites approximating a linear pattern. The insensitivity of regression analysis in non-linear patterns may be acceptable if a cautious analysis is warranted. PMID- 3858291 TI - Posterior composites: are they ready to replace amalgam? PMID- 3858292 TI - Oral manifestations of vitamin deficiencies. PMID- 3858293 TI - Undiagnosed periodontal disease. A mock trial. PMID- 3858294 TI - Specific cutaneous involvement in the course of chronic myelomonocytic leukemia simultaneously with blastic leukemic transformation. Report of a case with histologic and cytochemical study. AB - We report a case, in a 74-year-old man, of chronic myelomonocytic leukemia (CMML) that showed cutaneous involvement in its terminal phase. The patient developed a nodular eruption with an irregular distribution over the entire skin surface. Histology showed an acute leukemic infiltration in the reticular dermis. We were able to demonstrate cells with intermediate myeloid and monocytic characteristics ("paramyeloid cells") in the skin biopsy and in bone marrow smears. There have been only four patients reported previously with similar clinical findings. In one of them the cutaneous eruption heralded an aggressive clinical shift of the disease, as in our case. The present case confirms the utility of skin biopsy in similar cases for predicting the evolution of the disease. PMID- 3858295 TI - Psychopathology of eating disorders: a controlled comparison of bulimic, obese, and normal subjects. PMID- 3858296 TI - Effects of video games on the adverse corollaries of chemotherapy in pediatric oncology patients: a single-case analysis. PMID- 3858297 TI - The effect of X-radiation on the susceptibility of enamel to an artificial caries like attack in vitro. PMID- 3858298 TI - Structural and physical factors affecting the brush wear of dental composites. PMID- 3858299 TI - Importance of high pKA acids in cariogenic potential of plaque. AB - Through the use of computer simulation, it is shown that anions of high pKA acids (e.g., acetic, propionic, butyric), present in resting plaque fluid, act as effective buffers during the production of stronger acids (e.g., lactic) by oral micro-organisms. Using reported organic acid compositions for plaque, obtained from caries-resistant and caries-susceptible individuals, analyzed at various times following sucrose exposure, it is shown that the calculated pH values of the aqueous phase of plaque describe typical Stephan curves. Furthermore, it is shown that for higher acid anion contents in resting plaque, a higher degree of saturation of the aqueous plaque phase with respect to enamel is maintained during acid production, resulting in a lower demineralization potential of plaque. Enamel demineralization experiments conducted in vitro confirmed the significance of the results of the computer simulations, thus providing evidence for a correlation between the known metabolic activity of plaque (organic acid composition), physical chemistry of plaque, and caries susceptibility. PMID- 3858300 TI - Histopathology of the initial lesion of the root surface: an in vitro study. AB - An acidified gel system was used to produce artificial caries lesions in root surfaces. Radiopaque surface layers were found with 47% of the lesions. Demineralized bodies of the lesion and mineralized zones of banding were seen in all lesions when examined by microradiography. Cementum and dentin seemed to respond to the acid attack in a similar manner. Although artificial root lesions did not simulate natural root caries entirely, the acidified gel system resulted in a reproducible method that might give insight into initial lesion formation on root surfaces. This technique may be used for studying the physico-chemical process involved in the demineralization of root surfaces and for testing the effects of various agents in the prevention of root caries. PMID- 3858301 TI - Factors relating to dental stain formation in the rat. AB - A series of studies was conducted to investigate the use of the rat as an in vivo model for studies of dental stain and to identify dietary factors which influence stain formation in this model. It was determined that appreciable amounts of stain formed on the molar teeth of rats provided a synthetic diet containing lactalbumin, and the amount of stain increased throughout a four-week test period. Stain formation was also observed when rats were provided their diet by gastric intubation. Topical applications of chlorhexidine generally resulted in an increase in stain formation, as did the presence of tea in the drinking water. These studies support the use of the rat for investigations of dental stain. PMID- 3858302 TI - Effect of oral nutrient limitation of gnotobiotic rats on acidogenic properties of dental plaque formed by oral streptococci. AB - The acid production rate of dental plaque, formed by different streptococci in gnotobiotic rats fed a high sucrose diet or starved for seven or eight days, was determined in vitro. Starvation had no appreciable effect on acid production. This supports the idea that the small pH-lowering ability of plaque of caries free or stomach tube-fed people in whom exposure of the teeth to fermentable carbohydrate is relatively low or negligible results from a change in the bacterial population rather than a change in the rate of acid production by an unaltered flora. PMID- 3858303 TI - Age-dependent decreases in human submandibular gland flow rates as measured under resting and post-stimulation conditions. AB - Submandibular saliva samples were obtained with a new collection device, under resting and post-stimulation conditions, from 28 healthy individuals between 70 and 91 years of age, and from 30 healthy individuals between 18 and 39 years of age. The salivary flow rates were significantly decreased in the aged group compared with the control group. The mean resting and post-stimulation flow rates for the aged group averaged 22% and 39%, respectively, of control values. PMID- 3858304 TI - Comparisons of various salivary parameters in smokers before and after the use of a nicotine-containing chewing gum. AB - This study was designed to compare various salivary parameters between smokers and non-smokers and to determine the influence of a nicotine-containing chewing gum (used to aid in quit-smoking efforts) upon these same parameters. At the baseline examination, subjects were assigned to one of three groups: non-smokers who did not utilize any gum, smokers provided a nicotine-containing gum, and smokers provided a placebo gum. Saliva was collected from all subjects and analyzed for acidogenicity and buffer pH as well as for levels of thiocyanate, lactoperoxidase, lysozyme, lactoferrin, and secretory IgA. After 15 weeks of gum usage, saliva was again collected from each subject and the identical analyses performed. Significant differences were observed between smokers and non-smokers with regard to three parameters: The saliva of smokers contained greater concentrations of thiocyanate and lower concentrations of lactoferrin, at the baseline examination and after the 15-week test period. In addition, the CO content of alveolar air was higher in smokers at both examination periods. In contrast, the use of the nicotine gum per se had no effect on any of the test parameters. PMID- 3858306 TI - A new method for matching tooth colors with color standards. AB - A new method for quantitative intra-oral tooth color determination is presented. Basically, the tooth color is assessed by visual comparison with opaque color standards, which are logically arranged according to three visual color dimensions. The standards were analyzed spectrophotometrically, and the C.I.E. color coordinates were computed. Illumination and observation were standardized during the matching procedure. Two distinct situations, method 1 and method 2, were investigated. The situation in method 1 is to be considered as large window illumination and small window collection of the reflected light. For method 2, the same small window was used for both illumination and observation. Using both methods, the color of a tooth could be quantified into three separate color dimensions. Using method 1, the consistency among 25 examiners was high in determining the color of ten teeth; using method 2, the inter-examiner agreement was low. For the same tooth, different color standards were selected with method 1 or method 2. The standard selected with method 2 often appeared to be in disagreement within clinical expectations. The differences in results between method 1 and method 2 are explained by the optical properties of the translucent dental enamel (e.g., volume reflection). Method 1 allows for reproducible quantification of clinical tooth discoloration according to C.I.E. color specifications and can possibly be applied in prosthetic dentistry. PMID- 3858307 TI - In vitro crevice corrosion behavior of implant materials. AB - The crevice corrosion susceptibility of cold-worked Type 316LVM stainless steel, cast Co-Cr-Mo, wrought Co-Cr-W-Ni, non-nitrided and nitrided Ti-6Al-4V ELI, and c.p. Ti, Grades 1 and 4, was studied in vitro by means of a crevice cell. Occlusion was created by interfacing a disc specimen and a Teflon bar. Specimens were mechanically prepared through 2-4 micron Al2O3 and passivated in 30% HNO3, followed by steam sterilization. Tests were performed in a deaerated Ringer's solution, maintained at pH = 7 and 37 degrees C. Anodic polarization was conducted potentiostatically at pre-selected levels, and resultant currents were monitored: stainless steel, 50 and 100 mV (S.C.E.), 450 min; non-stainless materials, 600 mV, 1000 min. Results for the stainless steel demonstrated that a HNO3 passivation treatment reduced its crevice corrosion susceptibility. For the non-stainless steel materials, no crevice corrosion susceptibility was observed, although a dulling and discoloration of c.p. Ti was evident. Recognizing that 600 mV is in excess of the O2 reduction potential in vivo, it was concluded that, in the absence of fretting, implants of these non-stainless steel materials would not experience significant corrosion loss under crevice conditions. PMID- 3858305 TI - Oral mucosal lesions among elderly in Israel. AB - The prevalence of ulcerative or proliferative oral mucosal lesions (OML) is an important parameter in evaluating the oral health of an elderly population. This paper relates the prevalence of OML in an elderly population to possible risk factors and defined high-risk groups. The second objective was to examine whether effective prediction of OML was possible from interview data alone. The elderly population of a Jerusalem neighborhood was surveyed in 1981: 456 elderly were interviewed by trained interviewers, and their oral cavities were examined by an oral epidemiologist. Specific diagnoses were confirmed by an independent senior clinician. Almost 40% of the elderly presented ulcerative or proliferative oral mucosal lesions. The prevalence of these OML was strongly related to the condition and age of dentures. The association between these OML and oral hygiene disappeared after controlling for the condition of the denture. Two variables ascertained by interview--age of denture and self-reported suitability of denture -turned out to be strong predictors of denture condition. PMID- 3858308 TI - Tarnish evaluation of gold-based dental alloys. AB - Three commercial gold dental alloys and three ternary (Au-Ag-Cu) alloys of constant nobility were subjected to a standardized test battery for tarnish. The tests included sodium sulfide and artificial saliva solutions, both at 37 degrees C, in sealed containers. Quantitative measurements of tarnish were made from the alloy color change during a three-day exposure. Alloy nobility is a relatively important factor in determining tarnish resistance; however, microstructure can have a negative effect on tarnish resistance. Alloys with a two-phase microstructure produce microgalvanic conditions which lead to either silver chloride or silver sulfide tarnish products. A solution heat treatment improves tarnish resistance by eliminating microstructural inhomogeneities. PMID- 3858309 TI - Corrosion evaluation of gold-based dental alloys. AB - Three commercial gold-based dental alloys and three constant-nobility ternary alloys (Au-Ag-Cu) were evaluated for corrosion using a quantitative test battery. Integration of the current density, in a de-aerated solution of 1% NaCl along the approximate potential range found in the mouth (-300 mV to +300 mV vs. SCE), yields a quantitative rank ordering of the test alloys. The results are combined with prior findings on other commercial alloys to demonstrate the interaction of nobility and microstructure. Nobility determines the overall corrosion resistance for gold-based alloys. However, because of mutual insolubility, alloying with copper induces silver segregation, resulting in a higher corrosion rate at a given nobility. Thus, microstructure has an influence on corrosion, but heat treatments are largely ineffective in altering the basic corrosion characteristics. The test techniques, in combination with tarnish evaluations, provide a quantitative battery for alloy evaluation. The results indicate the combinations of nobility, microstructure, and environment most likely to avoid corrosion difficulties. PMID- 3858310 TI - Microstructures of duplex (beta + gamma) silver-tin alloys. AB - The microstructures of (beta + gamma) silver-tin alloys are especially influenced by both homogenization temperature and subsequent heat treatment. When the alloy is cooled from homogenization temperatures above approximately 200 degrees C, lenticular regions of the ordered orthorhombic gamma phase precipitate from within the disordered h.c.p. beta phase on three structurally equivalent planes, (1210), (1120), and (2110), to form a Widmanstatten structure. When the duplex alloys were homogenized at temperatures below approximately 200 degrees C, where the beta/(beta + gamma) phase boundary is vertical, these structures were not observed. PMID- 3858311 TI - Application of an x-ray image magnifier to the microradiography of dental specimens. AB - A highly parallel incident x-ray beam combined with x-ray image magnification was used to obtain high-resolution microradiographs of dental specimens. Preliminary results obtained using a rotating anode x-ray generator show that limitations associated with conventional contact microradiography regarding spatial resolution, sample thickness, and sample orientation, relative to the film, were significantly reduced. PMID- 3858312 TI - Differences in permeability of microperoxidase and horseradish peroxidase into the alveolar bone of developing rats. AB - Microperoxidase (small m.wt tracer) and horseradish peroxidase (large m.wt tracer) were used to investigate the existence of extracellular (between blood vessels and bone cells) and intracellular transport pathways in the alveolar bone cells of five-day-old rats. HRP directly penetrated the cytoplasm and nucleus of the osteocytes and osteoblasts, but MP did not. These findings suggest that HRP at high dosages is more toxic to bone cells than is MP, since the direct penetration of HRP probably results from alteration of plasma membrane permeability. If so, MP seems to be a more suitable tracer than HRP. The findings from MP tracing suggest that a main transport pathway of bone fluid exists between the external part of the unmineralized zone, which is located in the lacunar and canalicular spaces around bone cells, and the innermost edge of the mineralized matrix, which constitutes the lacunar and canalicular walls; in addition, minor pathways as accessory routes might diverge from the main pathway to go around the bone cells. PMID- 3858313 TI - Enamel fluoride in nursing rats with mothers drinking water with high fluoride concentrations. AB - The purpose of this study was to determine the F levels in plasma and molar enamel from rat pups whose mothers had received various levels of F during pregnancy and/or lactation. Rats were started on water containing 0 (Group I), 50 (Group II), or 100 (Group III) ppm F at the beginning of pregnancy or on the day of delivery. The mothers and pups were killed 13 days after delivery, and plasma F levels, milk F levels, and pup molar enamel F levels were determined. The mean maternal plasma F concentrations were 0.02 +/- 0.005 ppm in Group I, 0.10 +/- 0.031 ppm in Group II, and 0.21 +/- 0.057 ppm in Group III. The milk F values were about twice as high as the respective plasma concentrations. The plasma F concentration in control pups was 0.003 +/- 0.0002 ppm, and there was a rise to 0.006 +/- 0.0002 ppm in Group III. Enamel F concentrations were 0.62 +/- 0.13 ppm, 4.72 +/- 0.79 ppm, and 8.80 +/- 1.74 ppm, respectively. The plasma and enamel F values obtained from pups were not significantly different between the pre-natal/post-natal, and the post-natal-only groups. It was concluded that: fluoride levels in the plasma and enamel of control rat pups were much lower than those found in adult rats, such values could be increased only slightly when high doses of F were given to the mother, and unlike values reported for other species, rat milk fluoride concentrations were higher than the respective plasma values. PMID- 3858314 TI - Depth of penetration of in vitro root surface lesions. AB - An acidified gel system was used to produce artificial caries lesions in root surfaces and in enamel. The teeth were exposed to the gel system for two weeks and four weeks, after which the lesions were examined by polarized light microscopy and photographed by standardized techniques. The depths of penetration of the lesions were measured from these standardized photomicrographs. The lesions in root surfaces were deeper than those in enamel for all teeth. After two but not four weeks of exposure in the gel system, the lesions in the root surfaces of anterior teeth were deeper than those in pre-molars. PMID- 3858316 TI - Identification and characterization of rabbit buccal mucosal hyaluronidase. AB - This study establishes the existence of a mammalian buccal mucosal hyaluronidase having properties typical of a lysosomal enzyme. Mucosal hyaluronidase exhibited a distinct substrate preference for hyaluronic acid, generated saturated de polymerization products by endoglycosidic hydrolysis, and possessed a pH optimum of 3.5 and an isoelectric point of 5.9. PMID- 3858315 TI - In situ fluoride uptake from fluoride dentifrices by carious enamel. AB - A series of studies was performed to measure fluoride deposition in incipient caries-like lesions in enamel specimens contained in functional partial dentures in panelists who used fluoride dentifrices for periods ranging from two to nine weeks. The studies demonstrated the ability of the model to replicate the fluoride-uptake results obtained with a series of three dentifrices in two different panels of subjects. All fluoride dentifrices resulted in significant fluoride deposition, although significantly greater deposition was observed with a NaF-SiO2 dentifrice. PMID- 3858317 TI - Adjusting craniofacial correlations for technical error. AB - Reliability estimates provide a means of adjusting observed correlations for technical error. The results show that the true correlations among 11 craniofacial landmarks are consistently higher than observed values. Consequently, the regression slopes defining these relationships are also increased. The less reliable two measures are, and the closer their joint reliability approximates the observed correlation, the greater the expected change in true correlation. Adjusting craniofacial relationships for technical error may substantially increase the proportion of variation explained, and thereby alter statistical inferences drawn from results. PMID- 3858318 TI - Periodontal bone loss in dry mandibles of South African blacks: a biometric study. AB - Periodontal bone loss associated with periodontitis results in increase in the distance between the cemento-enamel junction (CEJ) and the alveolar bone crest (ABC). This study analyzed periodontal bone loss in 100 mandibles of South African blacks who were never exposed to preventive or restorative dental treatment. Specimens were equally distributed over the third to the seventh decade of adult life. CEJ-to-ABC (CA) distances were measured along 4904 surfaces of 1076 teeth. Analysis of the measurements showed that, generally, CA distances increased with age; differences were substantial between the first and fifth age groups. The incisors were most severely affected in all age groups, and bone loss was less severe around posterior teeth. Pre-molars and second molars lost the least bone. No significant differences between measurements on the buccal, lingual, mesial, or distal surfaces for these teeth were found. Measurements on the right and left sides of the mandible did not differ significantly. These observations may, in part, have been influenced by mid-life loss of teeth caused by severe periodontitis; their absence from the sample may have masked the true extent of periodontal bone loss. The difference in age of eruption and, therefore, the difference in period of exposure to the oral environment may account for the more severe bone loss in the anterior teeth, especially in specimens from younger individuals (21-30 years). PMID- 3858319 TI - Smoking and periodontal disease in the Finnish population aged 30 years and over. AB - The aim of this study, which was part of the Mini-Finland Oral Health Survey, was to evaluate the effect of smoking on periodontal condition in the Finnish adult population. A representative sample was drawn from the population aged 30 years and over. The total number of subjects was 8000, 90% of whom participated in the clinical examination. Periodontal diagnoses were made according to the modified Periodontal Treatment Need System (PTNS). Information about age, toothbrushing, and smoking habits was collected by personal interviews. When the sample was divided into two groups (with and without periodontal pockets), the overall risk ratio (RR) was 1.39 and was slightly higher for men than for women. A log-linear model was used to study simultaneous associations and interactions between smoking, periodontal disease, and some background factors. In this model, smoking had not significantly affected the periodontal condition. PMID- 3858321 TI - The Mentor Apprentice Program--a modest proposal for alleviating the scarcity of clinical researchers in dentistry. PMID- 3858320 TI - Double-layer color effects in porcelain systems. AB - The color of an unshaded body porcelain was determined at three thicknesses on white, gray, and three chromatic backings. Spectral absorption and scattering coefficients of the porcelain were determined from the diffuse reflectance at one thickness on the white and gray backings. These optical coefficients, when utilized with the Kubelka-Munk reflectance theory, accurately predicted the color of the other sample configurations studied. The scattering of the body porcelain was found to decrease with increasing wavelength within the visible spectrum, in accordance with scattering theory for particles not substantially less than the wavelength of the scattered light. For the filtering effects of a translucent material in optical contact with a backing, the Kubelka-Munk reflectance theory described the interaction between the optical absorption and scattering within the translucent material and the reflectance of the backing. PMID- 3858322 TI - Effects of a curriculum change on dental student attitudes. AB - This study compared student attitudes before and after the change from a four- to a five-year D.M.D. program at the Harvard School of Dental Medicine. Three instruments were used to collect data from eight successive classes, the last four enrolled in the original program (classes of 1979-1982) and the first four enrolled in the new program (classes of 1984-1987). Overall participation rate was 89 percent. The scales were: (1) the Survey of Interpersonal Values (SIV); (2) a bipolar adjective checklist, The Job of Dentistry, which reveals views of the profession, and (3) Career Plans. The same set of scales was administered for a second time, upon graduation, to the classes of 1980-1982. Only two changes were noted between first and second administrations for these three classes: at graduation, the job of dentistry was viewed as more sales-oriented and more physical. Comparing the two programs, students in the new (five-year) program scored significantly higher on leadership in the Survey of Interpersonal Values. Five-year students viewed the job of dentistry as significantly more changing, complicated, unusual, intellectual, scientific, interesting, and involving more public speaking, and their career plans tended to be more academically oriented. PMID- 3858323 TI - Effect of feedback on student attitudes. AB - We sought to determine the change in student attitude toward a testing program when the students used a self-assessment test and were given computer-generated feedback. Ninety-four junior dental students at one school were placed in two groups and surveyed about their attitudes toward the testing program of the Department of Operative Dentistry and themselves as operative dentists. A semantic differential instrument and Likert-scale questions were used. One week later, the students in the experimental group participated in a self-assessment and three weeks later received individual, computer-generated feedback. Both groups were surveyed again at this time. Students in the experimental group exhibited a significant improvement in attitude toward the department's testing program but not toward themselves as operative dentists. The control group showed no significant change in attitude toward either concept. PMID- 3858324 TI - The inquiry approach in dental hygiene education. AB - A study was done to assess the impact of an inquiry-oriented curriculum in a dental hygiene program. Two instruments, designed to measure student perception of personal and faculty inquiry and disinquiry behavior, were administered to four consecutive classes twice a year between 1978 and 1981. Junior and senior students perceived a significant increase in faculty inquiry behavior and, initially, a decrease in disinquiry behavior. Time in the program affected student disinquiry behavior at a significant level, though no significant change was seen in inquiry behavior. National Board mean scores improved, and several categories of clinical productivity increased significantly during this period. The implications of these findings are discussed. PMID- 3858325 TI - Registered dental hygienists as dental students. AB - Surveys were conducted to (1) investigate how and why dental hygienists choose to become dentists, (2) evaluate their success in dental school, (3) assess the experience of those who had entered dental school, and (4) gauge the level of interest among dental hygienists and currently enrolled dental hygiene students in applying to dental school. Records of former dental hygienists who had earned a dental degree indicated that the majority performed above class averages and that none withdrew or were dismissed from school. Those enrolled in dental school agreed that prior dental hygiene experience was an asset in laboratory and clinical work; they were less certain about any academic advantage. Registered and student dental hygienists generally agreed on the attractive and unattractive aspects of becoming a dentist. Major attractions cited were increased earnings and independence; major drawbacks were the costs of dental education and stress associated with being a dentist. Those with baccalaureate degrees showed more interest in becoming dentists than did those with associate degrees. Dental schools should give dental hygienists positive consideration as applicants and advanced placement as students. In view of the observed interest in career change, dental hygiene and dental programs are encouraged to develop more sensitive career counseling. PMID- 3858326 TI - Geriatric dentistry in the predoctoral curriculum. AB - The elderly component of the general population has been increasing in the past decades and will continue to increase well into the future. This group of people presents to the dentist with a unique set of characteristics, both dental and physical. To treat the elderly more competently and to provide clinical training to undergraduates simultaneously, a geriatric dental program was initiated in 1976 at the University of Illinois College of Dentistry. The program's current status and operation are described. PMID- 3858327 TI - The 1985 conference on the NIDR-university partnership. PMID- 3858328 TI - The value of an assessment system in a preclinical amalgam exercise. PMID- 3858329 TI - Predoctoral orthodontic instruction and practice of recent graduates in Florida. PMID- 3858330 TI - Applicant interest and goals in postdoctoral training in general dentistry. PMID- 3858331 TI - Are amalgam fillings safe? PMID- 3858332 TI - Employee or independent contractor? PMID- 3858333 TI - The dentists' responsibility to health care delivery. PMID- 3858334 TI - Responsibility of the dental profession to education and research. PMID- 3858335 TI - Dental manpower--the dental school's dilemma in a state institution. PMID- 3858336 TI - The private dental schools' dilemma. PMID- 3858337 TI - The pursuit of excellence. President-elect's address. PMID- 3858338 TI - A look at dental manpower and related issues. PMID- 3858339 TI - The economics of American dentistry: no need to panic. PMID- 3858340 TI - The future of dentistry. PMID- 3858341 TI - Local anesthetics and pregnancy. PMID- 3858342 TI - Pit and fissure sealant. PMID- 3858343 TI - Dental group practice. A blueprint for practitioners. PMID- 3858344 TI - Patients' preferences for dentists' behaviors. AB - Unlike previous studies that examined specialized populations or were completed some years ago, this survey collected information from a cross-section of patients who were currently receiving various kinds of dental treatment. Although the study disclosed that patients' preferences and perceptions of dentists' performance might vary within and between demographic groups, a more important finding was that, in general, most patients in all demographic groups held common beliefs about how they would like to be treated by their dentists. However, according to the reports of these patients, the dentists did not always behave in ways that were congruent with the patients' preferences. The study showed that patients are sensitive to dentists' behaviors. It should also be noted that dentists are sensitive to patients' behaviors and that dentist-patient relationships may be a source of stress for both patients and dentists. Nevertheless, the responsibility for setting the tone of these relationships rests primarily with the dentist rather than with the patient. Therefore, it is important for dentists to be aware of the needs and preferences of their patients so that they can act in ways that will make patients comfortable and dental treatment a positive experience. The potential that appears to be inherent in good, satisfying dentist-patient relationships for minimizing patient stress and making dentistry a less stressful profession has yet to be fully realized. Dentistry is a two-way street: whatever benefits the patient should in turn benefit the dentist as well. PMID- 3858345 TI - Diagnostic yield and selection criteria in complete intraoral radiography. PMID- 3858346 TI - Oral manifestations of the Rieger syndrome: report of case. AB - The Rieger syndrome is a rare, autosomal dominant disorder. It is characterized by defects of the anterior chamber of the eyes as well as developmental malformations of the dentition. A case is described that shows classic findings with emphasis on dental management. Oral abnormalities in the pedigree may also suggest subtle manifestations of the syndrome. Recognition of the dental anomalies may result in early diagnosis of the syndrome and prevent progressive visual loss. PMID- 3858347 TI - Assessment of lingual function when ankyloglossia (tongue-tie) is suspected. AB - Dental specialists are frequently confronted with the task of attempting to determine whether a cause and effect relationship exists between a short or restricting lingual frenum (ankyloglossia or tongue-tie) and a specific oral motor dysfunction. Because there is no standardized definition of what constitutes a condition of tongue-tie, the dental practitioner is often unsure as to the appropriate course of action with a patient with suspected ankyloglossia. This paper describes clinical measures that permit quantifying several anatomic and functional aspects of the tongue. Such baseline analysis provides a more definitive appraisal of lingual function as well as a more objective basis for making pre- and posttreatment comparisons. PMID- 3858348 TI - Radicular evaginatus--a root anomaly. AB - An unusual root malformation in a mandibular second premolar is presented. Clinical and histologic findings, as well as treatment ramifications, are discussed. The pathogenesis of this malformation is also discussed. The term radicular evaginatus is suggested for this condition. PMID- 3858349 TI - Dentistry on stamps. Ebers papyrus. PMID- 3858350 TI - Diffuse, increased radiodensity of the maxilla and mandible. AB - The case presented here demonstrates the radiographic changes characteristic of osteopetrosis; and in conjunction with normal laboratory findings, the diagnosis is confirmed. Of particular interest is the lack of history of bone fractures or infection, in view of multiple previous extractions. Practitioners must be careful not to assume that such a history implies immunity to complications. Once the diagnosis of osteopetrosis has been made, treatment for all patients should be directed toward restoration and retention of teeth with emphasis on excellent oral hygiene. PMID- 3858351 TI - Tooth enamel gene identified by rDNA technology. PMID- 3858353 TI - Code on dental procedures and nomenclature. Council on Dental Care Programs. PMID- 3858352 TI - A survey of retired dentists in the United States. Council on Dental Practice. AB - This paper reports on the results of a national survey of retired dentists carried out in the winter and spring of 1984. More than eight in ten of the respondents were general practitioners. Most retirees are between the ages of 60 and 69, married, and report their overall health at retirement to be excellent or good. As do retired scientists, dentists find intrinsic gratification in the work role, but apparently accept retirement as part of the life cycle. Retired dentists have income substantially greater than retirees in general. As is the case for the greater majority of older Americans, Social Security provides an important income support for respondent dentists. However, the primary source of retirement income for dentists comes from savings and investments. One of three retired dentists reports net worth in 1984 as between $200-$499,999. Retired dentists are well adjusted to retirement. Overall, most dentists report high satisfaction with retirement to date. Additional leisure time for hobbies, flexibility in owning one's time, and social activities with family and friends seem the main contributors to this satisfaction. Investment planning, health assessment, enthusiasm for outside interests, and personal preparation for retirement with a spouse are reported as important in retirement planning. Retirement is not a satisfying experience for all dentists. Some do report experiencing uselessness and depression. A still smaller proportion report feelings of loneliness and inadequacy. As is the case for older people in general, solitary activities including reading, watching television, and gardening are important for retired dentists. Most older people attempt to retain activity patterns and preferences developed earlier in life.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3858355 TI - Acceptance of Sensodyne toothpaste for sensitive teeth. Council on Dental Therapeutics. PMID- 3858354 TI - Acceptance of OMNI-II disinfectant for instruments and equipment. Council on Dental Therapeutics. PMID- 3858356 TI - The outlook for dental malpractice insurance. Council on Insurance. PMID- 3858357 TI - Treating the whole problem. PMID- 3858358 TI - Caries protection and prediction. PMID- 3858359 TI - A sweet dispute. PMID- 3858360 TI - Enough already? PMID- 3858361 TI - Changing concepts in endodontic therapy. PMID- 3858362 TI - Temporomandibular joint surgery: patient-based assessment and evaluation. AB - Surgery has been important in the treatment of internal derangement of the TMJ. Many patient series have been reported concerning surgeons' evaluation of the surgery but only a few articles regarding patient-based assessment can be found. This study presents responses of 83 patients to personal interviews and mail questionnaires. A high degree of patient acceptance of the surgery and satisfaction with the results are reported. Eighty percent consider their joint status better and would repeat the surgery if faced with the same problems, 70% are essentially pain-free, and 18% experience pain mainly during heavy chewing. Diligent preoperative patient preparation and postsurgical care are recommended for success. PMID- 3858363 TI - Characteristics of amalgam restorations with variable clinical appearance. AB - A sample of 165 extracted or exfoliated teeth containing amalgam restorations were categorized as to the degree of marginal integrity of the amalgam. Microstructures of the samples representing the highest (grade 11) and lowest (grades 1 and 2) degrees of marginal deterioration were studied by SEM/EDS. The clinical evaluation and microscopic evaluation indicated that samples showing poor marginal integrity contained large quantities of tin-rich and tin-chlorine rich corrosion products with little or no gamma-2 phase remaining. Obvious signs of fracture and cracking at the cavosurface were always present. Products containing calcium were extensively associated with corrosion products containing tin, and these were found predominantly at the tooth-amalgam interface. No copper rich amalgams were found in this grouping. Amalgams with good marginal integrity had no microscopic cracks or fractures and generally little evidence of corrosion was found. However, one of six samples had extensive corrosion products, indicating that corrosion product formation is not the only factor contributing to marginal deterioration. After 6 years of clinical use, the degree of marginal deterioration did not appear to depend unerringly on time of use. Further work is necessary to define the microstructural characteristics of samples showing intermediate amounts of marginal deterioration and to determine if copper-rich amalgams consistently have small to moderate amounts of marginal deterioration. PMID- 3858364 TI - The unilateral pterygohamular subperiosteal implant: evolution of a technique. PMID- 3858365 TI - Cavernous lymphangioma of the lip: report of case. AB - Lymphangiomas are benign lymphatic growths secondary to developmental aberration. They are generally found in young patients. However, they may be undiagnosed or improperly treated, as in this case, and appear as the patient grows older. The isolated location of the lesion in the upper lip and the age of the patient are unusual; few cases have been reported in the literature. Complete surgical excision resulted in restoration of normal anatomic contour of the lip. PMID- 3858366 TI - Factors associated with maintenance of proper water fluoride levels. PMID- 3858367 TI - Dentistry on stamps. PMID- 3858368 TI - Xerostomia: evaluation of a symptom with increasing significance. AB - Xerostomia is the subjective sensation of oral dryness. Although it is most commonly associated with salivary gland dysfunction, it may also occur with normal gland activity. Xerostomia may be an early symptom of several morbid systemic conditions with important implications for the medical and dental management of patients. Oral dryness also has negative effects on an individual's emotional well-being and quality of life. The complaint of xerostomia necessitates a complete evaluation of a patient's general health, salivary gland function, and oral motor and sensory abilities. The salivary gland assessment includes symptom review, analysis of glandular secretions, scintiscanning, and minor labial gland biopsy. No single component is sufficient to adequately diagnose the presence, extent, or cause of salivary dysfunction. Treatment of a dry mouth, to date, is mainly palliative in nature, with the intent of preserving oral structures and functions. Better therapies are essential in the management of xerostomia, whatever the cause. The importance of xerostomia as a symptom is increasingly recognized in medicine and dentistry. The dentist is commonly the first health professional to hear this complaint and may be critical in directing a full and appropriate evaluation. PMID- 3858369 TI - An oral soft tissue lesion associated with a sinus mass. AB - A case of an inflammatory nasal polyp extending through an oroantral fistula and appearing as an intraoral soft tissue lesion is discussed. Although this is apparently a rare occurrence, the nature of the lesion was suggested by the history, clinical appearance, and radiographic findings. Surgical intervention and removal of the inflammatory lesion was followed by complete healing with closure of the oroantral fistula. PMID- 3858370 TI - Annual report of membership of the American Dental Association: December 1984. Data Processing Department. PMID- 3858371 TI - Guidelines for the acceptance of fluoride-containing dentifrices. Council on Dental Therapeutics. PMID- 3858372 TI - Recent developments in materials and processes for ceramic crowns. Council on Dental Materials, Instruments, and Equipment. AB - Recently, a number of new materials and processes have been introduced for the construction of ceramic jacket crowns. These include new, stronger ceramics for reinforcing porcelain crowns. Also, processes have been developed for fabricating more accurately fitting ceramic crowns. Based on the strengths reported and clinical failure data with comparable materials, they may be suitable for anterior crowns as alternatives to porcelain-fused-to-metal crowns. Manufacturers' indications for use also include posterior crowns. Clinical data on their performance, however, have not yet been documented in published literature. Individual ceramic crowns offer a potential for a better esthetic appearance than porcelain-fused-to-metal crowns. The accepted marginal design indicated by manufacturers for ceramic jacket crowns is the 90 degrees full shoulder with a rounded gingival-axial line angle or a deep chamfer. Tooth reduction is 1.0 to 1.5 mm for axial surfaces and 1.5 to 2.0 mm for incisal edge or occlusal surfaces. Specific margin designs and other recommendations for tooth preparation should be followed for each of these materials. These new developments represent an addition of new materials and technology into an important area of restorative dentistry. As ceramic crowns have similar appearance, it is prudent for the dentist to seek evidence that the new high strength ceramics are actually being used rather than the weaker conventional porcelains. Information on the clinical performances of the molded and cast ceramic crowns is not yet published. Their performances in long-term clinical situations have yet to be documented and published. The council will publish an update on ceramic crowns when additional information becomes available. PMID- 3858373 TI - Accredited dental schools. Commission on Dental Accreditation. PMID- 3858374 TI - Hepatitis B virus infection in the dental profession. AB - This paper has presented information concerning the degree of hepatitis B infection in the dental profession. This disease is being transmitted from patients to dentists, dental staff members, and their families by both percutaneous and nonpercutaneous routes. Only one of five infections is clinically diagnosed, deeming the patient's medical history an unreliable indication of potential infectivity. All members of the dental profession are at a risk at least three times higher than the general population of contracting this disease and developing the carrier state. Unfortunately, as undiagnosed carriers, members of the dental profession can also unknowingly infect other staff personnel, patients, and family with widespread ramifications. PMID- 3858375 TI - Hepatitis B active and passive immunity. PMID- 3858376 TI - State-of-the-art: practical infection control in dentistry. AB - Practical infection control in the operatory is a multi-step process. Protocol should be updated to include good: identification of high-risk patient populations, barrier technique, aseptic technique, surface disinfection, instrument sterilization, and equipment disinfection and sterilization. PMID- 3858377 TI - Transmission of HBV from dental personnel to patients. PMID- 3858378 TI - Law in the dental workplace: legal implications of hepatitis B for the dental profession. PMID- 3858379 TI - Future vaccines. PMID- 3858380 TI - Evaluation of the National Symposium Workshop on hepatitis B and the dental profession. PMID- 3858381 TI - ISBH launches public awareness campaign about Tourette syndrome. PMID- 3858383 TI - Temporomandibular joint diagnosis: arthroscopy. PMID- 3858382 TI - Biosynthetic relationships of the chondroitin sulfate proteoglycan with Ia and invariant chain glycoproteins. AB - As a first step to elucidating the role of the Ia-associated chondroitin sulfate proteoglycan (CSPG) in the biology of the Ia antigens, we have studied several aspects of the interactions of the CSPG with the Ia/invariant chain glycoproteins. These studies revealed that at any time point, only 2 to 5% of Ia molecules were associated with the CSPG, and that this fraction included Ia molecules that were expressed at the cell surface. Pulse-chase studies indicated that the association of Ia molecules and the CSPG was rapid and short lived. Newly synthesized [35S]sulfate-labeled CSPG molecules were detected in association with Ia molecules immediately after a 15-min pulse, but were barely detectable after a 30-min chase, and were completely undetectable after a 60-min chase. Similarly, newly synthesized [3H]leucine-labeled Ia molecules associated with the CSPG were detectable immediately after a 20-min pulse, and after a 75 min chase, but could not be detected in association with the CSPG after a 300-min chase. Virtually no CSPG that was similar in size to that associated with Ia molecules was found free in the cells or was secreted into the media. The results in this report are compatible with the hypothesis that some or all of the Ia molecules associate transiently with the CSPG, or that a small fraction of Ia molecules associate permanently with the CSPG in a short-lived complex. These studies tend to favor a role for the CSPG in the biosynthesis of Ia rather than in intracellular trafficking or in intercellular communication. PMID- 3858384 TI - Association between the prominence of the articular eminence and displaced TMJ disks. PMID- 3858385 TI - Objective measurement of jaw movement: a comparison of two measuring instruments. PMID- 3858386 TI - Myrhaug's operation for treating recurrent dislocation of the temporomandibular joint. PMID- 3858388 TI - Signs and symptoms of mandibular dysfunction in complete denture wearers five years after receiving new dentures. PMID- 3858387 TI - An anterior maxillary appliance for treating TMJ dysfunction. PMID- 3858389 TI - Temporomandibular joint adaptation to mandibular repositioning in adult occlusal rehabilitation. PMID- 3858391 TI - TMJ patient goals: comfort and stability. PMID- 3858390 TI - An intrasubject replication strategy for evaluating occlusal splint therapy. PMID- 3858392 TI - Choosing the right appliance. PMID- 3858393 TI - Cell kinetics of the K-562 cell line in microculture. AB - The cell kinetic parameters of K-562 leukemia cells were studied using microwell cultures in which growth was initiated from a single cell. Total population growth was studied by direct enumeration, 3H-thymidine labelling, and flow cytometry. Clonogenic cell growth was studied by replating and 3H-thymidine suicide. In 7-day clones of K-562 cells, durations of the total cell cycle, G1, S, G2, and M phases were 20.8 h, 3.5 h, 12.9 h, 3.3 h, and 1.1 h, respectively; the growth fraction was 0.92 and the cell loss factor was 0.084. Study of colony forming cells by replating indicated that clonogenic cells comprised 40% of total cells. 3H-Thymidine suicide showed that cell-cycle duration for these cells was 22.5 h and that S-phase duration was 11.7 h. PMID- 3858394 TI - HLA-linked control of predisposition to lepromatous leprosy. AB - In order to investigate if genes conferring susceptibility to leprosy and/or predisposition to a particular leprosy type are linked to HLA, we performed HLA-A and HLA-B typing on members of 29 families containing at least two siblings affected with leprosy from a leprosy endemic area in Jiangsu Province, People's Republic of China. Moreover, we performed a lepromin test in nearly all of the members of eight families containing at least two siblings affected with lepromatous leprosy. For 26 families the data permitted analyses of the segregation of parental HLA-haplotypes observed among children in relation to leprosy status. Siblings affected with lepromatous (LL or BL) leprosy shared parental HLA-haplotypes significantly more often than expected (p less than 0.05), and a highly significant deficit (p less than 0.0005) of shared HLA haplotypes was observed among affected siblings discordant for leprosy type. These data confirm the HLA-linked control of leprosy type and, in particular, recently obtained evidence for linkage of predisposition to lepromatous leprosy with HLA. Healthy siblings did not share a haplotype more often than expected, and those haplotypes which were shared among all leprosy patients of a sibship did not occur less frequently than expected among the healthy siblings of the same sibship. The latter data confirm the absence of linkage of genes conferring susceptibility or resistance to leprosy with HLA. An analysis of the lepromin test results observed among healthy siblings showed no evidence for cosegregation of the results with HLA. PMID- 3858395 TI - [Evaluation of a monoclonal antibody (CA 19-9 system) in gastrointestinal disease -in comparison with CEA and IAP]. PMID- 3858396 TI - Kole's osteotomy, a follow-up study. AB - A retrospective investigation into Kole's (1959) osteotomy for the correction of anterior open bite was performed. Changes in occlusion were seen in 32%. Bone graft incorporation was satisfactory. The vitality of the teeth adjacent to the osteotomy and the periodontal condition were satisfactory if a tooth at the osteotomy site was extracted. The sensibility of the lip was, in general, good. PMID- 3858397 TI - Spontaneous regeneration of the mandible in a child. A sequel to partial avulsion as a result of a war injury. AB - A 7-year-old child sustained a severe avulsion injury to the left mandible leaving a 6 cm. gap. A Kirschner wire alone was used for immobilization and stabilization. Radiographs of the mandible 2 1/2 years later showed complete osteogenesis and solid bone formation over the Kirschner wire. The young age of the patient was definitely important in influencing this favourable result. The author's experience in older war injuries patients, using the same procedure, has shown no such bone formation. The source of osteogenesis is believed to be from mesenchymal cells of the soft tissue remaining in the gap. The theories pertaining to the source and mode of osteogenesis in this case are discussed. PMID- 3858398 TI - Surgery in mandibular condylar hyperplasia. AB - The experience with 35 patients with unilateral condylar hyperplasia is described. Possibilities of distinction between active and non-active cases are discussed as well as the histological findings. Different surgical procedures were used for treatment. Pain in the joint area is a prominent feature in this group. The treatment was effective in this regard in all patients. PMID- 3858399 TI - The ameloblastoma, the controversial approach to therapy. AB - An investigation into the length of time which elapses after the treatment of an ameloblastoma before a recurrence becomes visible, has established that this only exceeds 5 years in 5% of cases. In this study the findings after a follow-up period of at least 5 years after conservative or radical therapy have been extracted from the literature and compared with those of the authors' own series of 84 cases. It is concluded that the recurrence rate is 75% in the cases of multilocular ameloblastomas treated conservatively. Following radical therapy the recurrence rate is 15%. Conservative treatment of unilocular ameloblastomas can be expected to result in a recurrence rate of 20%. PMID- 3858400 TI - Extranodal non-Hodgkin's lymphoma of the oral tissues. An analysis of 20 cases. AB - A series of 20 patients with extra-nodal non-Hodgkin's lymphoma (ENHL) of the oral cavity was analysed with the emphasis on histopathological variability and prognostic factors. The current diagnostic schemes as devised for nodal NHL proved also to be useful in diagnosing ENHL in the oral cavity. With respect to histopathology, intra-oral ENHL differs from nodal NHL in a lower incidence of nodular growth pattern and a relative predominance of the lymphoma sub-type with large vesicular indented nuclei. These are features, however, that are shared with ENHL in other body sites and thus are not unique to the oral location. Another salient histological feature was the presence of proliferating bizarre spindle cells with formation of whorling bundles of reticulin, thus creating a pseudosarcomatous growth pattern in some cases. The clinical stage proved to be the main discriminating factor between those who survived and those who died of their lymphoma. Of the patients who were in stage IE on admission, 70% survived as opposed to only 20% of those who were in stage II or IV. A better prognosis for cases with soft tissue involvement as opposed to intraosseous lymphoma is probably due to a consistently lower clinical stage in the former group. The prognostic value of the clinical stage emphasizes the importance of adequate clinical staging procedures. PMID- 3858401 TI - A clinico-pathologic presentation. Lymphoepithelial cyst. PMID- 3858402 TI - Acupressure in dental practice: magic at the tips of your fingers. PMID- 3858403 TI - A comparison of the potential for breakage: the Burns Unifile versus Hedstrom files. PMID- 3858404 TI - Management of a vertical root fracture. PMID- 3858405 TI - Pain and fistulas can cross the midline. PMID- 3858406 TI - Incidence of postoperative pain following the use of different sealers in immediate root canal filling. PMID- 3858407 TI - The effects of calcium hydroxide on bovine pulp tissue: variations in pH and calcium concentration. PMID- 3858408 TI - Evaluation of repair of mechanical perforations of the pulp chamber floor using biodegradable tricalcium phosphate or calcium hydroxide. PMID- 3858409 TI - A comparison of the area of the canal space occupied by gutta-percha following four gutta-percha obturation techniques using Procosol sealer. PMID- 3858410 TI - Traumatic neuroma subsequent to endodontic therapy. PMID- 3858411 TI - Endosonics: clinical impressions. PMID- 3858413 TI - Treatment of endodontic perforations. PMID- 3858412 TI - Student endodontic access cavity preparation: performance versus perception. PMID- 3858414 TI - Mast cells in human periapical lesions: ultrastructural aspects and their possible physiopathological implications. PMID- 3858415 TI - The "balanced force" concept for instrumentation of curved canals. PMID- 3858416 TI - Cutting ability of square versus rhombus cross-sectional endodontic files. PMID- 3858417 TI - Maxillary canine with two roots. PMID- 3858418 TI - Sensitization via IgE-mediated mechanism in patients with chronic periapical lesions. PMID- 3858419 TI - A versatile heat-carrying instrument. PMID- 3858420 TI - The use of the Messing gun in placing calcium hydroxide powder. PMID- 3858421 TI - A study on the heterogeneity of human chorionic gonadotropin. PMID- 3858422 TI - The electromyographic silent periods in the patients with temporomandibular joint and muscle pain dysfunction syndrome. PMID- 3858423 TI - Prinzmetal's variant form of angina pectoris: a case detected by continuous Holter monitoring. PMID- 3858424 TI - Giant cell carcinoma of the pancreas--a report of 2 resected cases. PMID- 3858425 TI - [Aspergillosis of the urinary tract--a report of 2 cases]. PMID- 3858426 TI - [Emphysematous pyelonephritis--a report of 2 cases]. PMID- 3858427 TI - Emphysematous pyelonephritis--a case report. PMID- 3858428 TI - Cytophotometric measurements of nuclear DNA content of bronchogenic carcinomas. I. Diagnostic value on benign and malignant bronchial lesions. PMID- 3858429 TI - [Experimental infection of Angiostrongylus cantonensis larvae to Ampullarium canaliculatus]. PMID- 3858430 TI - [Klinefelter's syndrome (a study on 1067 cases of male genital abnormalities)]. PMID- 3858431 TI - [Antithrombin III activity in stroke patients]. PMID- 3858432 TI - The growth status of premature infants fed with premature formulas. PMID- 3858433 TI - [Post-operative follow-up of Fontan procedure]. PMID- 3858434 TI - [Masseteric hypertrophy]. PMID- 3858435 TI - Utilization review in a hospice program. PMID- 3858436 TI - Central nervous system morbidity following an initial isolated central nervous system relapse and its subsequent therapy in childhood acute lymphoblastic leukemia. AB - The frequency and types of major CNS toxicity and morbidity were analyzed in 107 children with acute lymphoblastic leukemia (ALL) following an isolated primary CNS relapse. Seventy-nine (73%) have had multiple subsequent marrow or CNS relapses requiring intensive and prolonged therapy to the CNS. Median survival time is two years. Of these 79 patients, two thirds have had one or more types of major CNS toxicity, including epileptiform seizures (35), moderate to severe structural abnormalities (24 of 27 evaluated), major motor disabilities (9), blindness (2), CNS infection (6), cranial nerve palsies (2), and intracranial lymphoma (2). The remaining 28 patients (26%) have had no or one additional CNS relapse and have received therapy for a median of eight years. One half of this surviving group of patients have had major CNS toxicity, including seizures (9), major motor disability (2), and intracranial calcifications (12/19). When neuropsychologic evaluations were compared between the 28 survivors and 50 of their contemporaries who had been in initial continuous complete remission, the CNS survivors had significantly lower Full Scale IQ scores (83 +/- 16 v 99 +/- 14, P = less than .001) with similarly lower measures of academic performance. The relative contributions of meningeal leukemia itself and intrathecal or radiation therapy to these effects cannot be determined. Since major CNS sequelae occurred in the majority of patients who had a primary isolated CNS relapse, and the frequency of CNS relapse is dependent on the efficacy of the method of CNS prophylaxis, the best method of avoiding major CNS sequelae is the most effective form of CNS prophylaxis. PMID- 3858438 TI - Hiring a dental auxiliary effectively. PMID- 3858437 TI - The PPO debate. An "alphabet soup". PMID- 3858439 TI - Learning about your patient pool. PMID- 3858440 TI - Inflation in dentistry. Are you acting or reacting? PMID- 3858441 TI - Pricing the dental practice. PMID- 3858443 TI - Can we predict the appropriate number of dental graduates for the next 10-20 years? PMID- 3858442 TI - Generating meaningful rewards from the practice of dentistry. PMID- 3858444 TI - A study for discoloration of esthetic restorative materials. (1). Elementary analyses of the materials. PMID- 3858445 TI - Uptake of BSA and production of the antibody against BSA in rat intestine. PMID- 3858446 TI - Cell affinity of pyrolytic carbon. The effect exerted on the growth and colony forming ability of cell lines: L1210, Sq79 and L181. PMID- 3858447 TI - In vitro response of bone-derived cells and tissues to the fine Rahmen surface layer of a carbon implant. PMID- 3858448 TI - New Jersey's young dentists. Survey shows young dentists surprisingly like their elders. PMID- 3858449 TI - New Jersey's young dentists. Some would, some would not choose dentistry today. PMID- 3858450 TI - New Jersey's young dentists. Discrimination--some young dentists felt its ugly lash. PMID- 3858451 TI - New Jersey's young dentists. Bridging the gap between young dentists and their senior colleagues. PMID- 3858452 TI - New Jersey's expanded functions for dental auxiliaries. PMID- 3858453 TI - Heat testing in endodontics. PMID- 3858454 TI - Gallium-67 thoracic scan and pleural disease in asbestos workers. AB - We have recently reported that 67Ga scanning in asbestos workers can document excessive uptake of the marker among workers without sufficient criteria for asbestosis, but in our initial report we could not exclude definitely that 67Ga uptake could be related to pleural disease. To further test this hypothesis, we analyzed the 67Ga thoracic scan in relation to profusion scores of pleural disease on chest roentgenogram and CT scan of the thorax in 171 asbestos workers. We found no significant correlation between the 67Ga lung uptake and the radiographic scores of pleural disease. We concluded that pleural plaques are not an active site of 67Ga accumulation and do not contribute significantly to the thoracic uptake of the marker. PMID- 3858455 TI - Delayed splenic rupture: a suggestion for "predictive monitoring". AB - Two cases of delayed splenic rupture are presented. In one, splenic damage was demonstrated on Day 29 following trauma, and rupture of the organ occurred 2 days later. In the second patient, splenic trauma was documented 1 day after an accident, and rupture occurred on Day 26. Each case was marked by the fact that only one spleen scan had been performed (in the first case because of discovery only long after the trauma, and in the second case because of the patient's failure to return). That is, while damage to the spleen was evident, there was no follow-up to document healing. Based on this, it is suggested that spleen imaging be carried out soon after trauma. If a trauma-related defect is shown, then a repeat study may be mandatory to document healing. Lack of such healing, or failure to progress at a normal rate, may be an altering sign to impending splenic rupture. Hence, "predictive monitoring" by early and then repeat imaging at a later date, is proposed. PMID- 3858457 TI - Advertising: is it a dirty word? PMID- 3858456 TI - Effects of varying dietary iron on the expression of copper deficiency in the growing rat: anemia, ferroxidase I and II, tissue trace elements, ascorbic acid, and xanthine dehydrogenase. AB - The effect of dietary iron on the development of copper-deficiency anemia in the growing rat was investigated. For up to 80 d, female rats (75 g) were fed purified diets containing adequate, marginal or low levels of iron, and either 0.7 or 10 ppm copper. Hemoglobin levels and factors postulated to affect liver iron mobilization, including ferroxidase (Fox) I and II, ascorbate and liver xanthine dehydrogenase (XDH) were assayed. By d 7, Fox I activity in the copper deficient groups was 10% that of the copper-sufficient groups; thereafter, Fox I activity remained low, and was not affected by dietary iron. Fox II activity in the copper-deficient groups after d 28 was 50-75% of values from rats adequate in copper. On d 49, hemoglobin levels in the copper-deficient groups were lower than in the copper-sufficient groups fed low and marginal levels of iron, but were similar to those fed adequate iron. Liver iron was similar in both groups fed adequate iron, but was higher in the copper-deficient than in the copper sufficient rats fed low or marginal levels of iron. Copper deficiency tended to result in slightly lower ascorbate levels on d 80 at all levels of iron. Liver XDH activity tended to be lower in the copper-deficient groups than in the copper sufficient groups on d 28 and 49. These results show that copper deficiency may impair liver iron mobilization in the growing rat if dietary iron is low. Possible mechanisms include decreased Fox activity and/or decreased iron reduction by ascorbate or XDH. PMID- 3858458 TI - Advertising: what I tell my students. PMID- 3858459 TI - Barodontalgia: in relation to scuba divers. PMID- 3858460 TI - Effectiveness of alcohol in disinfection of air-water syringes. PMID- 3858461 TI - Advantages and disadvantages of direct gold restorations. PMID- 3858463 TI - Interview with Dr. Varoujan A. Chalian. PMID- 3858462 TI - Clinical diagnosis and treatment of oral candidiasis. PMID- 3858464 TI - Assessment of plasma glucose in 99 patients with oral lichen planus. PMID- 3858465 TI - Benzydamine HCL in the management of chemotherapy-induced mucositis. I. Pilot study. PMID- 3858466 TI - Backscatter radiation from restorative materials during cobalt 60 therapy. PMID- 3858467 TI - Osteomyelitis of the mandible in a patient with malignant osteopetrosis. PMID- 3858468 TI - Familial parotid gland aplasia. PMID- 3858469 TI - Bilateral recurrent submandibular obstructive sialadenitis. PMID- 3858470 TI - Unusual Gorlin cyst with traumatic neuroma. PMID- 3858471 TI - Asymptomatic impacted mandibular third molar in the subcondylar-sigmoid notch region associated with extensive sclerotic bone. PMID- 3858472 TI - Microcytosis in experimental iron deficiency. PMID- 3858473 TI - Peripheral schwannoma of the mandible. PMID- 3858474 TI - Histologic changes from local anesthetic injections. PMID- 3858475 TI - Teaching pain control in the general practice residency. PMID- 3858476 TI - The plight of the plaintiff. PMID- 3858477 TI - Wound healing after anterior and posterior subapical osteotomy. AB - Changes in the process of wound healing and in the dental pulp were examined following anterior and posterior mandibular subapical osteotomies in pig-tailed macaque monkeys. Results of microangiographic and histologic investigations indicated that degenerative pulpal changes may occur following mobilization and repositioning of small dentoalveolar segments. The potential significance of such degenerative pulpal changes and the need for routine dental radiographic checkups following anterior and posterior mandibular dentoalveolar surgery are discussed. PMID- 3858478 TI - An analysis of 2,067 cases of zygomatico-orbital fracture. AB - A ten-year review of 2,067 cases of zygomatico-orbital fractures is presented. The age and sex distribution, anatomical types of fractures, associated maxillofacial and nonmaxillofacial trauma, and causes of the injuries are described. The majority of fractures were sustained by males and resulted from trauma inflicted in altercations. The most common associated facial fractures were mandibular; the most common associated nonmaxillofacial trauma was extremity fractures. Motorcycle accidents caused the most significant amount of associated trauma, followed by motor vehicle accidents in which no seat restraint was used by the victim. Treatment, when indicated, consisted of elevation via a temporal approach followed by fixation where necessary. The fixation methods used are presented and discussed. PMID- 3858479 TI - The short-term effect of intra-articular injections of sodium hyaluronate and corticosteroid on temporomandibular joint pain and dysfunction. AB - The short-term effect of intra-articular injections of sodium hyaluronate and a corticosteroid (betamethasone) was compared in a sample of 33 patients who had pain and tenderness to palpation in the temporomandibular joint of at least six months duration that had not responded to previous conservative treatment. The two drugs were randomly allocated to the patients. A volume of 0.5 ml of the drug was injected twice into the superior joint compartment of the TMJ with a two-week interval between injections. The effect on subjective symptoms, clinical signs, and bite force was assessed. Both drugs reduced the symptoms and signs significantly, and no statistically significant difference in effect could be found between drugs in this regard. The results indicate that the difference between the drugs in terms of short-term therapeutic effects is small, and that sodium hyaluronate could be used as an alternative to corticosteroid for patients who have signs of TMJ inflammation, especially for those who have symptomatic osteoarthrosis. PMID- 3858480 TI - A re-evaluation of the role of tracheostomy in Ludwig's angina. AB - Ten cases of Ludwig's angina that required surgical decompression in addition to intravenous antibiotic therapy are reviewed. The vocal cords were visualized in all ten patients following deep inhalational anesthesia to relieve trismus. Only one case required tracheostomy, which has previously been recommended as the treatment of choice for airway management; the other nine were intubated under direct vision. PMID- 3858481 TI - A comparison between superior and inferior border wiring techniques in sagittal split ramus osteotomy. AB - The proper alignment of the proximal and distal segments after the sagittal split ramus osteotomy (SSRO) has been a major concern since this procedure was first performed. Because of this problem, a comparison was made between a superior border wiring technique and an inferior border wiring technique. This involved the preoperative and postoperative lateral cephalograms of 35 patients from the Department of Oral Surgery at the Medical College of Georgia who received a SSRO with advancement. Nineteen patients received an inferior border wire and 16 patients received a superior border wire. The areas studied were anterosuperior rotation of the proximal segment, increase in gonial angle, and condylar sag. A cephalometric evaluation and a computer analysis were performed. It was found that the inferior border wiring technique produces a statistically significant lesser amount of anterosuperior rotation of the proximal segment and less increase in gonial angle than the superior border wiring technique. Because of these findings, it was felt that the inferior border wiring techniques produce less displacement of the proximal segment in the SSRO advancement. PMID- 3858482 TI - Intraoral vertical subcondylar osteotomy: a national survey. AB - The results of a national survey pertaining to the IVSO are presented and the findings are contrasted with the literature on the procedure. It was found that the IVSO is a popular procedure for mandibular setback, that the value of determining the mandibular divergence angle is equivocal, that the Stryker oscillating saw is the most popular instrument for performing the osteotomy, that most operators leave the segments unfixed, and that the intraoral approach to the correction of mandibular prognathism is preferred. There were no geographic trends noted. PMID- 3858483 TI - Nonendemic American Burkitt's lymphoma. AB - A case of nonendemic American Burkitt's lymphoma with jaw involvement is presented. The oral findings are described and the distinctions of American form of the disease from the African form are discussed. PMID- 3858484 TI - Cowden's disease (multiple hamartoma syndrome). AB - A case report of Cowden's disease has been presented along with a discussion of its multiple system involvement. Its association with thyroid and breast malignancy make its differentiation from other or similar disease entities vital. PMID- 3858485 TI - Superior and buccal displacement of the mandibular canal in fibrous dysplasia. PMID- 3858486 TI - Extensive osteolysis of the mandible following devitalization of a tooth by arsenic trioxide. AB - A case of progressive osteolysis of the mandible that consisted of extensive fibrosis and granulation tissue and contained the occluded inferior alveolar artery and the inferior alveolar nerve is described. Arsenic trioxide was suspected as the possible precipitating cause of the lesion, which started with an abrupt onset of paresthesia of the lower lip following its application to the mandibular second molar for devitalization. PMID- 3858487 TI - Protracted temporomandibular joint arthritis in familial Mediterranean fever. PMID- 3858488 TI - Keratoacanthoma versus squamous cell carcinoma. PMID- 3858489 TI - Monitoring the sterilization assurance. A new service offered by the OHSU School of Dentistry. PMID- 3858490 TI - Hope for the hard of hearing. PMID- 3858491 TI - Ultrastructural aspects of nerves, bones, and vessels in hereditary sensory neuropathy. AB - This study concerns two children, from the same otherwise normal family, presenting progressive spontaneous amputations of the limbs, suggesting peripheral hereditary sensory neuropathy. Samples from the distal nerves and vessels and the distal tibial epiphyses were examined ultrastructurally. The nerves showed signs of degeneration, and a typical bone necrosis, without osteoclasts, was observed in the 2 cm margin of the samples. Simultaneous modifications of the vessels suggest a neurally initiated vascular reflex resulting in bone destruction. Theories that might explain the observations are discussed. PMID- 3858492 TI - Long-term neuropsychologic sequelae of childhood leukemia: correlation with CT brain scan abnormalities. AB - Previous studies have failed to establish a direct relationship between behavioral disorders and organic pathology in long-term survivors of childhood acute lymphoblastic leukemia. We evaluated 23 long-term survivors who received central nervous system preventive therapy with cranial irradiation and intrathecal chemotherapy, using neuropsychologic tests and computed tomographic brain scans. The patients were in continuous first remission for 7 to 11 years, and none were receiving chemotherapy. On the basis of their CT scan findings, they were divided into three groups: 10 with normal CT findings, five with intracerebral calcifications, and eight with cortical atrophy. Neuropsychologic test results allowed prediction of CT scan findings with an 87% accuracy (P less than 0.001), indicating a strong correlation between the presence and type of CT scan abnormality and neuropsychologic functioning. Tests that measured verbal memory, attention, and functions correlated with frontal lobe integrity were most powerful in discriminating between groups. PMID- 3858493 TI - Epidural spinal cord compression as the initial finding in childhood acute leukemia and non-Hodgkin lymphoma. PMID- 3858494 TI - Outcome of home mechanical ventilation in children. AB - A retrospective study of the outcome of home mechanical ventilation in 54 children with chronic respiratory insufficiency was conducted. The children's ages ranged from 4 months to 18 years. Tracheostomies and positive pressure ventilation were used in 33 patients, and negative pressure ventilation in 21 patients. Nine patients were eventually weaned from the ventilator, including three quadriplegic patients in whom electrophrenic stimulation subsequently was used. Over 20 years, there were 17 deaths, including three from ventilator disconnection. Life table analysis showed 1-year survival to be 84%, and 5-year survival 65%. Home mechanical ventilation, with patients cared for by family and friends, cost less (average less than $1000/mo) than registered nurse or hospital care (average $16,000/mo). There was no significant difference in the number of deaths between patients cared for by registered nurses 24 hours a day and those cared for by family and friends. Home mechanical ventilation may be a reasonably safe and cost-effective alternative to prolonged hospitalization for the ventilator-dependent child. PMID- 3858495 TI - Lymphoblastic leukemia with osteopenia and vertebral compression fractures. PMID- 3858496 TI - Extended wear contact lenses in pediatric aphakia. AB - A 100% silicone polymer contact lens can be used successfully for extended wear in pediatric aphakia. Compared to a hydrogel extended wear contact lens, the silicone lens has several advantages. These include easier handling, a less traumatic fitting procedure for the child, fluorescein use for evaluation of the lens-cornea relationship and a lower loss rate. Bacterial and preservative contamination are minimized due to the lower water content. The silicone lens appears to be safe, having no permanent adverse effects on the cornea. It would be more advantageous if the lens could be obtained in higher plus powers; however, the available power (up to +32.00D) is appropriate in almost all cases. PMID- 3858497 TI - Temporal patterns of the behavior of young children in the dental chair. PMID- 3858498 TI - An early approach for the interception of skeletal open bite: a preliminary report. PMID- 3858499 TI - Vasopressor syncope in children: incidence and treatment. PMID- 3858500 TI - The relationship between gingival inflammation and its protein composition. PMID- 3858501 TI - The incidence of transposition of teeth in dental patients. PMID- 3858502 TI - A new technique sequence for approximating a stainless-steel crown and a Class II amalgam. PMID- 3858503 TI - Nifedipine-induced gingival hyperplasia. A histochemical and ultrastructural study. AB - Gingival hyperplasia induced by nifedipine (Procardia), a calcium channel blocking agent used as an anti-anginal drug, was studied. In recent months, the role of nifedipine in the etiology of gingival hyperplasia has attracted interest. The purpose of this study was to determine the causal relationship and compare nifedipine to other drug-induced (phenytoin) and nondrug-induced gingival hyperplasias. Histochemical studies revealed increased numbers of fibroblasts containing strongly sulfated mucopolysaccharides in the nifedipine- and phenytoin (Dilantin) induced gingival hyperplasias as compared to the nondrug-induced cases. Numerous secretory granules were also noted in the fibroblast cytoplasm in the nifedipine-treated case studied by electron microscopy. These results imply that there is an increase in acid mucopolysaccharide production in the nifedipine and phenytoin-induced gingival hyperplasias. The potential significance and comparisons of the drugs' effects at the cellular level are discussed. PMID- 3858504 TI - Visualization of the human periodontium using serial thin section contact radiography. AB - A method is described to produce radiographs of thin sections of human teeth and periodontal structures. These high resolution contact x-rays allow for visualization of the microscopic details of the mineralized components of these tissues in a dimension heretofore not examined. Twenty-five blocks of human jaws containing teeth affected by periodontal disease were obtained from cadavers. Sagittal, transverse and cross-sectional serial slices were cut using a rotary instrument (1500 rpm) with a water-cooled 3-inch jewelers slot saw. Five hundred micron sections were made of jaw specimens containing 2 or 3 teeth. The radiographs were taken with a Faxitron low voltage x-ray machine on Kodak-Ortho, Type 3 film. Films were exposed at a distance of 12 inches from the x-ray source at 35 kVp and 1.0 mA for 3 minutes with the specimen in direct contact with the film. Spatial representation of the internal structure of the alveolar bone was obtained using this technique and the detailed anatomy of the vascular channels within the cancellous and cortical compartments of the jaws was studied. Mineralization patterns of plaque and calculus, calcifications in the periodontal ligament, pulp calcifications, accessory root canals, caries and detailed structural changes in the enamel and cementum were also viewed on these films with the aid of microscopy. Magnifications of up to 30 times were used without excessive image distortion resulting from film grain. PMID- 3858505 TI - Root surface measurements of the mandibular first molar. AB - The root surface area (RSA) per millimeter of root length was determined for 20 extracted mandibular first molars. The molars were cross-sectioned at 1-mm increments, and each section photographed, projected and measured with a calibrated opisometer. The RSA and per cent RSA were calculated for each 1 mm of root length (1-mm section), the root trunk and the individual roots. Also measured was the location of the root separations from the root trunk, the location of the first detectable root concavity, and the prevalence of "intermediate bifurcation ridges" (IBRs). Mean measurements indicated that the greatest RSA per millimeter of root length was 4 to 7 mm apical to the cementoenamel junction (CEJ) in the area of the furcation. Of the total RSA, 48.7% was located in the coronal 6 mm of a root (mean length, 14.4 mm). Root separation occurred 4.0 mm apical to the CEJ with no tooth having a root trunk longer than 6 mm. Buccal and lingual root concavities were first present 0.7 mm and 0.3 mm apical to the CEJ, respectively. Fourteen (70%) of the 20 teeth had IBRs. According to the mean measurements, the mesial root was larger than the distal root by a ratio of 1.0:0.88. Horizontal attachment loss of 6 mm affecting both the buccal and lingual surfaces of the mandibular first molar would have resulted in a through and through (grade 3) furcation involvement of all the teeth studied. PMID- 3858506 TI - Analysis of the antipyretic action of alpha-melanocyte-stimulating hormone in rabbits. AB - alpha-Melanocyte-stimulating hormone (alpha-MSH) or paracetamol was injected into a lateral cerebral ventricle (I.C.V.) of rabbits with elevations in rectal temperature induced by sodium arachidonate (I.C.V.), prostaglandin E2 (I.C.V.) or leucocytic pyrogen (I.V.). alpha-MSH (200 ng) was more effective than paracetamol (0.5 mg) in reducing fever caused by leucocytic pyrogen, but it did not alter hyperthermia induced by sodium arachidonate. In contrast, paracetamol reduced hyperthermic responses to arachidonate by about 70%. Neither alpha-MSH nor paracetamol affected hyperthermic responses to prostaglandin E2. The doses of alpha-MSH and paracetamol used in these experiments did not interfere with thermoregulation in a cold environment (10 degrees C). We conclude (1) that alpha MSH and paracetamol differ in their central mechanism of antipyresis or (2) that inhibition of arachidonic acid metabolism by paracetamol is not requisite for its antipyretic effect, in which case central release of alpha-MSH may mediate the antipyretic effect of paracetamol. PMID- 3858507 TI - Changes of attitude in fixed prosthodontic patients. AB - The results of a survey that examined the perceptions and attitudes of patients who have completed fixed prosthodontic treatment were described. The data obtained in this survey confirm the clinical experiences of many restorative dentists. Most patients desire functional, comfortable, and particularly, esthetic restorations. They are sensitive to changes that occur when provisional restorations are replaced by definitive crowns and fixed partial dentures. Tooth preparation and impression procedures are perceived as the most unpleasant steps in the treatment process. On completion of treatment, patients recognize and appreciate its benefits. The data have implications for the overall treatment process. With an appreciation for the perceptions and attitudes of fixed prosthodontic patients, the restorative dentist is prepared more completely to provide satisfying restorations. Through increased awareness of patient expectations and experiences, restorations can be planned, made and placed in harmony with the hard and soft oral tissues, and in harmony with the patient's expectations as well. PMID- 3858508 TI - Effects of topical fluoride preparations on glazed porcelain surfaces. AB - Porcelain disks were tested in three topical fluoride preparations to determine if glazed porcelain surfaces suffered untoward effects. Tap water was used as a control. The only disks damaged were those immersed in acidulated phosphate fluoride gel. Acidulated phosphate fluoride gel should not be used where glazed porcelain restorations are present. PMID- 3858509 TI - Evaluation of incisal guide calibrations. AB - The incisal guide calibrations of three adjustable articulators were investigated and compared to determine the significance of the different incremental markings of each. A method to use vertical changes in the anterior incisal guide of these three articulators accurately to measure jaw and tooth separation was proposed. The relationship between pin opening and incisor opening was evaluated by direct measurement and calculation. Twenty sets of diagnostically mounted casts were examined to evaluate the accuracy of the radius that generates each curved pin in relation to incisor position. Considering the as-manufactured incisal guide markings, casts mounted in a Denar D5A or TMJ articulator will bear a closer relationship between pin opening and incisor separation than casts mounted in a Stuart gnathological computer. To approximate linear incisor separation per calibration mark for each instrument, a table of values was presented for casts mounted at various positions. PMID- 3858510 TI - Geometric study of incisal guide pin opening. PMID- 3858511 TI - Efficient calcium hydroxide placement within the root canal. PMID- 3858512 TI - Dentin permeability: effects of cavity varnishes and bases. PMID- 3858513 TI - Panoramic radiographic examination of edentulous patients. AB - A study of panoramic radiographs made on 114 edentulous patients was described. Six radiographic entities were identified: root fragments, retained teeth, radiolucencies, radiopacities, foreign bodies, and mental foramina at or near the crest of the residual ridge. The percent of positive findings in this study and those of previous studies support the fact that one of three edentulous patients has a potentially complicating condition within the denture base foundation. These investigations stress the necessity of radiographic examination of all edentulous patients prior to treatment with complete dentures. The high incidence of positive findings suggests not only the need for radiographic examinations of all patients, but also the frequency with which the dentist is faced with the necessity of modifying the treatment plan. PMID- 3858514 TI - Determination of approximate size of maxillary anterior denture teeth when mandibular anterior teeth are present. Part III: Relationship of maxillary to mandibular central incisor widths. AB - The average width of a natural maxillary central incisor is 8.92 mm. This value is determined from the results of three studies of natural dentitions. The average width of a mandibular central incisor is 5.5 mm. The average ratio produced by dividing the average maxillary central incisor width by the average mandibular incisor width is 1.62. The factor of 1.5 times the width of a mandibular central incisor produces a maxillary central incisor width that is too narrow. The width of a mandibular central incisor plus half the width of the mandibular lateral incisor also produces a maxillary central incisor width that is too narrow. There may be a tendency to undersize the maxillary prosthetic dentition. The ratio of 1.62 can be used to select the appropriate width for a missing maxillary central incisor when given the width of the mandibular central incisor. This ratio of 1.62 is also valuable to verify the dimension of a selected artificial maxillary central incisor when the patient complains that the tooth is too large. If substitutions or adjustments are made in the mold, the desired canine-to-canine measurement produced by the ratio range of 1.3 to 1.38 reported in Parts I and II of this study should be maintained. PMID- 3858515 TI - Wear of anatomic acrylic resin denture teeth. PMID- 3858516 TI - Cranial and maxillofacial epithesis treatment on osseointegrated implants: concept and principles. PMID- 3858517 TI - Fabrication of hollow extraoral prostheses to enhance retention. PMID- 3858518 TI - Effective measures to reduce xylene exposure. AB - Several effective measures to reduce xylene exposure of clinicians during the extrinsic coloring of facial prostheses have been described. These measures can be used to modify the xylene exposure problem until an adequate ventilation system can be installed in the treatment room. PMID- 3858519 TI - Retrospective radiographic evaluation of 100 temporomandibular joint patients. PMID- 3858520 TI - An evaluation of occlusal indicator wax. PMID- 3858521 TI - Vertical dimension record: a three dimensional phenomenon. Part II. AB - Face height and profile have two displacement dimensions that can be measured: the superior-inferior face height measurement, and the anterior-posterior displacement of the midsagittal profile measurement. The superior-inferior displacement is largely a function of movement of the lower lip and related mandibular structures. The anterior-posterior displacement is generally associated with movement of the upper lip, particularly the tubercle. The changes in one dimension are usually a function of change in the other dimension; that is, an increase in height may be associated with contraction of the dental arches; or conversely, reduction of vertical height may be associated with expansion of the dental arches. PMID- 3858522 TI - Changes in chewing patterns of patients with complete dentures after placement of osseointegrated implants in the mandible. AB - Mandibular movements were recorded with the Selspot system in 16 complete denture patients, before and after treatment with mandibular OIFD. The general chewing pattern underwent only minor changes. However, some chewing cycle parameters showed obvious alterations. Increased mandibular velocity and displacement, especially in the opening phase, were registered. The cycle duration showed a tendency to decrease due to a significant shortening of the occlusion phase. This can be attributed to the stabilization of the occlusion provided by the fixed denture in the mandible. PMID- 3858523 TI - Denture cleansers and in vitro plaque. PMID- 3858524 TI - An analysis of anger in relation to clinical dentistry. AB - This article discussed anger and its cause. Experience and observation of human behavior denote valid points in the four concepts considered. The introduction of the RET has added the belief system and interpretation of events to the classic approaches. This concept adds further insight into why people become angry or, more accurately, allow themselves to be moved by anger. With this new knowledge should come an awareness of the need to converse with and know patients better and to prevent undesirable anger relationships from occurring. Dentists are able to modify the patient's belief system, if it is erroneous, by educating them toward more realistic expectations. This makes it possible to add to the patient's happiness by reducing conflictual relationships in the acceptance of reality. PMID- 3858525 TI - Fabrication of the hollow bulb obturator. AB - The fabrication of a hollow bulb without the use of water and pressure has been described. When water and pressure are used, it requires opening the bulb, draining the water, and resealing. Tissue conditioners, soft liners, clasps, teeth, and other additions may be used in conjunction with the restoration. Adjustments are easily made. PMID- 3858526 TI - The role of dental floss in restorative dentistry. PMID- 3858527 TI - Possible role of tensile stress in the etiology of cervical erosive lesions of the teeth. PMID- 3858528 TI - Fracture resistance of human teeth with mesial-occlusal-distal cavities prepared with sharp and round internal line forms. AB - Conservative MOD amalgam-type preparations of similar dimensions were cut in extracted contralateral maxillary first premolars; one preparation for each pair had sharp internal line angles and the other had a rounded internal form. The data do not demonstrate a statistically significant difference in resistance to fracture between the two groups. The difference in preparation produced by the use of a flat-end bur vs. a rounded-end bur does not appear to produce a great enough concentration of stress to significantly weaken teeth with conservative preparations. PMID- 3858529 TI - Reproducibility of mandibular centricity in three dimensions. PMID- 3858530 TI - Palatal shape and the flexural strength of maxillary denture bases. PMID- 3858531 TI - Depression: a psychologic consideration in complete denture prosthodontics. AB - When the complete denture population was examined for depression with the BDI, the greatest prevalence of depressive symptoms was found to coincide with the age groups that included the greatest proportion of denture wearers. An awareness by the dentist of high-risk groups for depression within the patient pool may help explain difficulties in achieving patient satisfaction with dentures, facilitate recognition of a problem, and make possible appropriate referral for diagnosis and treatment. PMID- 3858532 TI - Mandibular positioning prosthesis for the partially resected mandibulectomy patient. PMID- 3858533 TI - Interim obturation of palatal perforations. PMID- 3858535 TI - Bruxism and its effect on the natural teeth. AB - Bruxism is one of the most prevalent, complex, and destructive dental functional disorders. It is difficult to identify, especially in its early stages, because most patients are unaware of the habit. Although many factors contribute to the etiology of the disorder, there is little valid and reliable clinical research to assure a correct diagnosis. The effects of bruxism are multiple and diverse and include temporomandibular joint pain and dysfunction, head and neck pain, tooth wear, mobility, erosion, abrasion, loss of and damage to supporting structures, muscle pain and spasm, disturbance of esthetics, and interference and oral comfort. Treatment may be simple or complex, depending on the nature of the disorder. More severe disorders are difficult to treat, and the prognosis may be questionable. Because the diagnosis and treatment of bruxism is inadequately defined and poorly understood, carefully designed clinical research projects are encouraged. PMID- 3858534 TI - Tissue reaction to implanted biomaterials. AB - Tissue reactions to the single-crystal sapphire, titanium, Co-Cr-Mo alloy, and PMMA were histologically evaluated after implantation into the subcutaneous tissue and tibia of rats. In subcutaneous tissue the reaction from early necrotic change and acute inflammation to final encapsulation by fibrous connective tissue was least pronounced around single-crystal sapphire implants. Tissue reactions of a slightly greater degree were found around titanium and Co-Cr-Mo alloy implants. The most prominent tissue reaction was observed around PMMA implants. In the tibia, single-crystal sapphire, titanium, and Co-Cr-Mo alloy implants were encapsulated by newly formed compact bone, but bone was not so evident around PMMA implants. These findings suggest that single-crystal sapphire implants have more favorable tissue compatibility than those of titanium, Co-Cr-Mo alloy, and PMMA. PMID- 3858536 TI - The diagram of contact intensities: a basic characteristic of occlusion. PMID- 3858537 TI - A tomographic study of mandibular condyle position in an asymptomatic population. PMID- 3858538 TI - Collagen biosynthesis related to temporomandibular joint clicking in childhood. PMID- 3858539 TI - Duration of nocturnal tooth contacts during bruxing. PMID- 3858540 TI - Mandibular alveolar bone resorption: a vertical assessment. PMID- 3858541 TI - Preliminary study of mandibular shape after tooth loss. PMID- 3858542 TI - Investigation of the effect of a variable anterior guidance incline on the graphic registration of mandibular border movement: Part I. PMID- 3858543 TI - A permanent method of recording occlusal contacts. PMID- 3858544 TI - Moisture evacuation with the rubber dam in place. PMID- 3858545 TI - Compressive strengths of conventional, twin foil, and all-ceramic crowns. PMID- 3858546 TI - Effect of interocclusal records on transverse axis position. PMID- 3858547 TI - Effect of prostaglandin E2 on puerperal breast discomfort and prolactin secretion. AB - The effect of prostaglandin E2 (PGE2) (3 mg/day orally for four days) on puerperal breast discomfort and prolactin secretion was investigated in eight women in a double-blind, placebo-controlled study. Scoring systems were used for daily assessment of the degree of breast discomfort. PGE2 had no effect on breast lactation, breast swelling or pain. No difference was seen between serum prolactin in the placebo- and PGE2-treated women. Contrary to a previous report, in our experimental design PGE2 had no effect on puerperal breast lactation, swelling or pain or on serum prolactin. PMID- 3858548 TI - In vivo caries removal utilizing the YAG laser. PMID- 3858549 TI - Testing well water for prescribing fluoride supplements. PMID- 3858550 TI - Nursing home residents' right to refuse treatment. PMID- 3858551 TI - Alternative delivery and financing systems. PMID- 3858552 TI - Mucinous appendiceal tumors: clinical review. PMID- 3858553 TI - Imaging: magnetic resonance imaging of the spinal cord. PMID- 3858554 TI - Dental diagnosis and treatment of chronic vomiting patients. PMID- 3858555 TI - Gypsum products: use of abuse. PMID- 3858556 TI - Important information concerning liability insurance. PMID- 3858557 TI - [Progression and hemopoietic changes in erythroleukemia based on FAB classification]. PMID- 3858558 TI - [ACMP two-step therapy for children with acute nonlymphoblastic leukemia]. PMID- 3858559 TI - [Study on monitoring of the plasma 6-MP level]. PMID- 3858560 TI - [A case of myelomonocytic leukemia accompanied by pulmonary thromboembolism with mucormyces successfully treated by pulmonary lobectomy]. PMID- 3858561 TI - [Automation of colorimetry using chromogenic substrates, with special reference to blood coagulation disorders in acute myelocytic leukemia]. PMID- 3858562 TI - [Clinical evaluation of a cancer antigen CA125 associated with ovarian cancer. (III) Serum CA125 levels in patients with ovarian cancer and other gynecological tumors]. PMID- 3858563 TI - [Binding of lactate dehydrogenase to IgA]. PMID- 3858564 TI - [Biochemical diagnostic procedures in X-linked ichthyosis]. PMID- 3858565 TI - [A promising tumor marker CA 19-9 for pancreatic carcinoma: comparison with CEA and elastase 1]. PMID- 3858566 TI - [Gallium-67 scintigraphy in evaluation of bronchogenic carcinoma treated with radiation. Correlation with local effects and prognosis]. PMID- 3858567 TI - [Evaluation of serum CA 19-9 in digestive diseases. Fundamental and clinical studies]. PMID- 3858568 TI - Essential thrombocythemia terminating in myelofibrosis and myeloblastic transformation. AB - A 58-year-old man with essential thrombocythemia terminating in myelofibrosis and myeloblastic transformation is described. He was treated with busulfan and lived for 6 years and 6 months. At autopsy, significant osteomyelofibrosis was noted. Moreover, myeloblastic infiltration with proliferation of megakaryocytes and erythroblasts was seen in the bone marrow and spleen. In the lymph nodes, myeloid metaplasia was noted. The past reports on this disease terminating in myelofibrosis and/or blast transformation have been reviewed. PMID- 3858569 TI - Chemotherapy of acute leukemia in adults. PMID- 3858570 TI - Race, socioeconomic status, and other prognostic factors for survival from prostate cancer. AB - Survival data on prostate cancer patients from 11 Comprehensive Cancer Centers contributing data to the Centralized Cancer Patient Data System were analyzed to examine the contribution of various factors to the probability of survival from prostate carcinoma. Application of a number of exclusion criteria resulted in a series of 2,513 patients (1,032 blacks and 1,481 Caucasians) for whom complete data on variables of interest were available. The stage of disease at diagnosis was a major determinant of survival. The proportion of blacks presenting the disease in advanced stage was substantially higher than that of Caucasians--a difference which was maintained within each socio-economic status (SES) category. Caucasian patients had a better prognosis than blacks for each disease stage. A dose-response relationship between SES and survival prognosis was observed and this relationship persisted for each stage of the disease. Although both race and SES turned out to be significant in regression models in which one or the other was considered, the model including both race and SES showed only SES to be a significant factor. Hence it can be hypothesized that the racial difference in the survival prognosis for prostate cancer is, to a large extent due to the differences in the distribution of SES in the two races. PMID- 3858571 TI - Double minute chromosomes in acute myeloblastic leukemia. AB - Two patients with acute myeloblastic leukemia (AML) with double minute chromosomes (dmins) are described. One patient had dmins in approximately one third of bone marrow cells examined at diagnosis; no other karyotypic changes were observed. The dmins disappeared when the patient achieved a complete remission. The second patient developed acute leukemia as a second cancer, having previously received radiotherapy and chemotherapy for a breast carcinoma. At the time of diagnosis of AML, the patient exhibited dmins in 12% of bone marrow cells; other complex karyotypic changes were observed. Data on the clinical and cytogenetic features of these cases are compared with those of other reported cases of acute leukemia with dmins. The possible biologic and clinical significance of dmins in acute leukemia is discussed. PMID- 3858572 TI - Modulation of the terminal differentiation of human squamous carcinoma cells in vitro by all-trans-retinoic acid. AB - A malignant human cell line (SqCC/Y1) derived from a squamous carcinoma of the buccal mucosa is described. It formed a stratified cellular structure with ultrastructural characteristics of a fully differentiated stratified squamous epithelium when cultured in equal parts of Dulbecco's modified Eagle medium and Ham's medium F12, supplemented only with insulin, transferrin, and selenium. After 14 days in culture in this defined medium, 30% of the cells became keratinized (insoluble in detergent), and 75% of the cells were capable of being induced to form cornified cell envelopes. Involucrin, the precursor protein of the cornified cell envelope, could be detected by immunofluorescence only in suprabasal cells. Treatment of SqCC/Y1 cultures with 5 X 10(-8) M all-trans retinoic acid (RA) completely inhibited stratification and markedly increased cell desquamation. In the presence of RA, less than 10% of the cells became keratinized, and only 15-20% of the cells acquired envelope-forming competence. The fraction of colony-forming cells in RA-treated cultures was tenfold higher than in fully mature cultures. Thus RA appears to be an effective inhibitor of terminal differentiation of SqCC/Y1 cells. PMID- 3858574 TI - Short-term fluctuations and long-term trends in anchorage-independent multiplication among cryopreserved subpopulations of a spontaneously transformed Balb/3T3 clone. AB - A spontaneously transformed clone of Balb/3T3 cells which produced primitive pleomorphic sarcomas in nude mice was maintained in serial passage without cryopreservation. It was also cryopreserved at an early passage and thawed out at four successive intervals. The capacity of these 5 subpopulations to form colonies while suspended in agar (CFEag) was assayed repeatedly over a period of almost 3 years. The initial CFEag and the subsequent pattern of change were unique for each of the subpopulations. When later passages of the nonfrozen subpopulation were cryopreserved and then thawed, there was only a slight change in CFEag and colony size in agar. There were differences in multiplication rates of 3 of the subpopulations on plastic surfaces in the same rank order as their CFEag, but the differences were smaller. Short-term fluctuations in CFEag, however, were not paralleled by changes in multiplication rate on plastic. The nonfrozen subpopulation assumed the appearance of nontransformed fibroblasts when crowded for several days on plastic, and these "normalized" cells had a greatly reduced CFEag when assayed in agar. Neither the change in appearance nor the decrease in CFEag with prolonged incubation of crowded cells occurred with one of the cryopreserved subpopulations which had the same CFEag and growth rate on plastic as the nonfrozen subpopulation under optimal conditions. The evidence favors an epigenetic rather than a genetic origin of the variations in appearance and behavior of the subpopulations. PMID- 3858573 TI - Carcinogenicity of diallylnitrosamine following intragastric administration to Syrian hamsters. AB - Single and multiple intragastric doses of diallylnitrosamine [(DAN) CAS: 16338-97 9] administered to Syrian golden hamsters induced tumors, primarily of the respiratory tract, in which the nasal cavity epithelium was the preferred site. When compared to the effect of DAN after subcutaneous administration at equal doses, the incidence of respiratory tract tumors was lower but that of hepatic tumors was higher, suggesting partial metabolism of DAN in the liver. Comparative metabolic and mutagenesis studies in BD IX rats (which reportedly are refractory to the carcinogenic effects of DAN), in Wistar rats, and in Syrian hamsters showed that a greater proportion of orally administered DAN was exhaled by both rat strains (12-19%) than by hamsters (2-4%). The activity of the microsomal fraction of the hamster liver for metabolizing DAN to allyl alcohol was about 10 times higher than that in rats, whereas no significant species differences were found with the cytosolic fraction. Pretreatment of animals with phenobarbital (PB) or pregnenolone-16 alpha-carbonitrile (PCN) did not influence either microsomal or cytosolic enzyme activities in hamsters, whereas about a tenfold increase in enzyme activities was seen after pretreatment with PB in both rat strains and following PCN in Wistar rats. Moreover, in bacterial mutagenesis assays, hamster liver microsomes were twice as active as those in BD IX rats. The results are discussed in relation to the carcinogenicity of DAN in rats and hamsters. PMID- 3858575 TI - Inhibition of mouse natural killer cell activity by zinc. AB - The effect of zinc on mouse natural killer (NK) cell activity was evaluated. The inhibition of NK cell activity with zinc was dependent on the concentration of zinc added (range tested: 0-40 micrograms zinc/ml) and occurred at both effector to-target ratios tested. Zinc-induced inhibition of NK activity was observed with the use of peritoneal or splenic effector cells on Toxoplasma gondii-augmented NK activity. Maximal inhibition of activity was noted when zinc was present for the entire assay period. Inhibition was present but less marked with pretreatment of effector cells with zinc. Pretreatment of target cells with zinc had no measurable effect on NK cytotoxicity. Effector-to-target cell binding as measured by single-cell assays was not significantly altered by zinc. These results indicate that zinc is a potent inhibitor of NK activity. PMID- 3858577 TI - Effect of tuftsin on in vivo development of 3-methylcholanthrene-induced primary fibrosarcoma and Lewis lung carcinoma in mice. AB - The effect of tuftsin therapy on tumor development was examined in a murine primary fibrosarcoma and the Lewis lung carcinoma systems. Following im injection of 3-methylcholanthrene (CAS: 56-49-5) on day 0, C57BL/10ScSn mice were treated weekly with 3 ip tuftsin injections beginning on day 1 or day 60. Similar patterns of tumor development were observed regardless of whether tuftsin therapy was immediate or delayed. Only modest differences in experimental and control tumor incidences were found upon termination of studies; however, treated animals developed significantly fewer tumors than controls early during the observation periods. Thus mean tumor latent periods varied significantly when therapy began on day 1 (103.6 days in controls vs. 119.1 in treated mice; P = .02) or 2 months later (104.6 days in controls vs. 115.3 in treated mice; P = .01). One day subsequent to intra-footpad implantation of 10(5) Lewis lung carcinoma cells, C57BL/6 mice received at least 10 iv injections of tuftsin and were compared with controls for variations in survival or lung tumor development. The mean survival time in treated mice, 41.2 days, differed sharply from that (30.1 days) in controls (P = .00001). Similar groups of mice varied significantly in mean metastatic lung colony counts when examined on day 30; there were 15.1 colonies in controls and 8.0 in experimental animals (P = .03). PMID- 3858576 TI - Histidinol-mediated enhancement of the specificity of two anticancer drugs in mice bearing leukemic bone marrow disease. AB - The possibility was investigated that L-histidinol-anticancer drug combinations may provide increased tumor cell eradication and eliminate in vivo bone marrow toxicity of proliferation-dependent anticancer agents in animals bearing an established, intrafemoral bone marrow disease. It was previously demonstrated that L-histidinol, a structural analogue of the essential amino acid L-histidine, improves the specificity of cytarabine (ara-C) and 5-fluorouracil (FUra) in DBA/2J mice bearing intraperitoneal L 1210 leukemia. Accordingly, DBA/2J mice were given iv injections of 1 X 10(6) L1210 leukemia cells 3 days before histidinol-anticancer drug treatments. During the postinjection, pretreatment interval, injected tumor cells populated the femoral marrows, shown by clonogenic assays and flow cytometric analyses. Following various drug treatments, quantitative and selective survival assays were performed of normal femoral cells and of clonogenic L1210 leukemia cells isolated from the femurs of treated mice. These experiments demonstrated that L-histidinol not only protected the marrow cell population from both ara-C and FUra, but also increased significantly the toxicities of these agents for the intrafemoral tumor cells. Thus L-histidinol mediates a substantial increase in the specificities of ara-C and FUra in mice bearing an established bone marrow leukemic condition. PMID- 3858578 TI - Hormonal influences on growth of B16 murine melanoma. AB - The influence of endocrine factors on B16 melanoma growth was investigated in young and old male mice to test the hypothesis that senescent hormonal changes account for the age-associated reduced tumor growth previously observed in our laboratory. Again it was demonstrated that tumors grow more slowly and to a lesser volume in old mice. For a test of whether senescent hormonal changes account for this tumor growth pattern, B16 was implanted into male and female C57BL/6 mice and tumor growth observed. In addition, young adult male mice were castrated and later B16 melanoma growth was determined. Tumor growth was similar in male and female mice. Contrary to our expectations, however, castrated male mice demonstrated larger tumor volumes, despite serum testosterone levels similar to those of old mice. Furthermore, after iv tumor cell injection, the occurrence of pulmonary colonies was greater in castrated mice. These observations indicate the importance of hormonal factors in this commonly explored tumor system. With regard to aging and tumor growth, however, senescent sex hormone changes probably do not account for the slower tumor growth observed in aged animals. PMID- 3858579 TI - Partial reversion of the metastatic phenotype in a wheat germ agglutinin resistant mutant of the murine tumor cell line MDAY-D2 selected with Bandeiraea simplicifolia seed lectin. AB - MDW4, a wheat germ agglutinin (WGA)-resistant (WGAr) mutant of the metastatic murine tumor cell line MDAY-D2, was previously shown to be nonmetastatic in the syngeneic DBA/2 host. A substantial portion of the asparagine (Asn)-linked carbohydrate in MDW4 terminated in N-acetylglucosamine (GlcNAc) and appeared to be a premature truncation product of the sialylated poly-N-acetyllactosamine containing complex found in MDAY-D2 cells. This lesion in carbohydrate structure has been shown to contribute to the more adhesive behavior of MDW4 cells on laminin, fibronectin, and type IV collagen and to the increased sensitivity of MDW4 to natural killer (NK) cell lysis in vitro. For further characterization of the relationship between Asn-linked carbohydrate structures, cell adhesion, NK cell sensitivity, and metastasis, mutants of MDW4 were selected for resistance to the GlcNAc-binding lectin from Bandeiraea simplicifolia seeds (BSII). Three independently selected BSII-resistant (BSIIr) mutants of MDW4 chosen for further study had a lectin resistance phenotype intermediate between that of MDAY-D2 and that of MDW4. Plasma membrane glycoproteins separated by sodium dodecyl sulfate polyacrylamide gel electrophoresis and stained with iodinated WGA, BSII, and leukoagglutinin also indicated an intermediate phenotype, with the presence of both GlcNAc-terminating structures and sialylated complex. Compared to MDW4, the BSIIr mutants of MDW4 showed a return to the more malignant phenotype of MDAY-D2 when injected iv. The double mutants were less sensitive to NK cell lysis in vitro and to the in vivo effects of the NK cell boosting agent polyinosinic polycytidylic acid. The double mutants retained the ability to attach to fibronectin, laminin, and collagen type IV in vitro, a property that may have contributed to their low malignancy when the cells were injected sc. MDW4 cells have been shown to fuse at low frequency with host-derived bone marrow cells at the sc site of injection, thereby acquiring the wild-type lectin resistance and metastatic phenotypes. The same process appears to occur in mice given an injection of the double mutants. The results suggest that the WGA-binding oligosaccharides found in MDAY-D2 and the BSIIr mutants of MDW4 enhance the malignant phenotype of the cells in the experimental metastasis assay. PMID- 3858580 TI - Effects of the interaction of dietary fat and protein on N-nitrosobis(2 oxopropyl)amine-induced carcinogenesis and spontaneous lesions in Syrian golden hamsters. AB - Syrian golden hamsters were fed four diets in experiments designed to evaluate the effects of the interaction of dietary fat and protein on carcinogenesis induced by N-nitrosobis(2-oxopropyl)amine [(BOP) CAS: 60599-38-4]. The diets consisted of two levels of dietary fat [4.5 g (low fat, LF) or 18 g (high fat, HF) of corn oil/385 kilocalories (kcal)]. These levels were fed with each of two levels of dietary protein [9 g low-protein (LP) and 36 g high-protein (HP) casein/385 kcal]. The four diets were fed to two separate groups of hamsters at two different periods in their life-span. For testing of the effects of diet on tumor initiation, one group received the diets from 3 to 7 weeks of age. At 8 weeks, they were given injections sc of 10 mg BOP/kg body weight and placed on a control diet [9 g corn oil (medium fat) and 18 g casein (medium protein)/385 kcal]. The other group received control diet until 8 weeks of age, at which time they were given injections of BOP and placed on the four diets. This group was designed to test the effects of the diets on tumor development. BOP-induced lesions in the lungs, liver, common bile duct, gallbladder, and kidneys are described; results in the pancreas were reported separately. In hamsters fed the four diets after BOP treatment, the LF-LP groups had the fewest tumors, the LF-HP fed and HF-LP-fed groups had intermediate yields of tumors, and the hamsters given HF-HP diet exhibited the largest numbers of neoplasms. Several specific tumor types showed a similar pattern. For example, the pulmonary adenoma incidence, which was low in the non-BOP-treated hamsters, was higher in the HF-HP group than in those fed LF-HP diet after BOP, but it was not influenced by fat at the LP level. In addition, renal adenomas were observed at a low incidence in non BOP-treated hamsters and in hamsters fed LF-LP levels before or after BOP treatment (0.5% incidence) but were present at an 8% incidence in all other BOP treated groups. The incidence of biliary cystic adenomas was highest in male hamsters that received HF diets, irrespective of BOP treatment, and BOP treatment resulted in increased yields of this lesion in females only in groups given HF-LP diet.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3858581 TI - Enhancement of two-stage skin carcinogenesis by exposure of distant skin to UV radiation. AB - Exposure of C3H/HeN mice to UV 280-320 nm (UVB) radiation induces a systemic, immunologic alteration that interferes with the rejection of highly antigenic UVB radiation-induced skin cancers. The effect of this systemic alteration, induced by ventral UVB irradiation of mice, was tested on the induction of dorsal skin tumors resulting from initiation with UVB radiation and promotion with 12-O tetradecanoylphorbol 13-acetate (TPA). The systemic effect of UVB radiation markedly potentiated carcinogenesis at the distant site. More important, mice treated with TPA alone on the dorsal skin developed a significant number of dorsal tumors if the mice also had been exposed ventrally to UVB radiation. Treatment of dorsal skin with UVB radiation alone did not result in the development of cancers, regardless of whether the mice received ventral irradiation. These results suggest that the systemic effect of UVB radiation is exerted during the promotion phase of two-stage carcinogenesis. Furthermore, they imply that a systemic effect of UVB radiation interferes with a natural host control mechanism that ordinarily holds skin cancers in check. PMID- 3858583 TI - Design of cancer assays for pharmaceutical agents. PMID- 3858582 TI - Dietary effects of menhaden oil on the growth and membrane lipid composition of rat mammary tumors. AB - The objective of this study was to evaluate the effect of quantitative differences in dietary menhaden oil, an n-3 polyunsaturated marine oil, on mammary tumor development and to compare these results with those produced by corn oil, an n-6 polyunsaturated vegetable oil. Inbred female BUF rats were treated with the carcinogen N-methyl-N-nitrosourea (CAS: 684-93-5) and maintained on diets containing graded levels of each of the respective oils. Our results indicated that diets containing 20% menhaden oil produced a reduction in tumor incidence and a prolongation of the tumor latent period. This finding contrasted sharply with the enhanced tumor development and shortened latent period observed in the animals fed the equivalent dietary level of corn oil. Fatty acid analyses performed on the lipids extracted from the tumor and hepatic microsomes of the animals on the menhaden oil diets demonstrated that the proportion of eicosapentaenoic acid (No. of C-atoms:No. of double bonds = 20:5) present in these microsomal lipids was related inversely to mammary tumor development. PMID- 3858584 TI - Second cancers following radiation treatment for cervical cancer. An international collaboration among cancer registries. AB - The numbers of second cancers among 182,040 women treated for cervical cancer that were reported to 15 cancer registries in 8 countries were compared to the numbers expected had the same risk prevailed as in the general population. A small 9% excess of second cancers (5,146 observed vs. 4,736 expected) occurred 1 or more years after treatment. Large radiation doses experienced by 82,616 women did not dramatically alter their risk of developing a second cancer; at most, about 162 of 3,324 second cancers (approximately equal to 5%) could be attributed to radiation. The relative risk (RR = 1.1) for developing cancer in organs close to the cervix that had received high radiation exposures--most notably, the bladder, rectum, uterine corpus, ovary, small intestine, bone, and connective tissue--and for developing multiple myeloma increased with time since treatment. No similar increase was seen for 99,424 women not treated with radiation. Only a slight excess of acute and non-lymphocytic leukemia was found among irradiated women (RR = 1.3), and substantially fewer cases were observed than expected on the basis of current radiation risk estimates. The small risk of leukemia may be associated with low doses of radiation absorbed by the bone marrow outside the pelvis, inasmuch as the marrow in the pelvis may have been destroyed or rendered inactive by very large radiotherapy exposures. There was little evidence of a radiation effect for cancers of the stomach, colon, liver, and gallbladder, for melanoma and other skin cancers, or for chronic lymphocytic leukemia despite substantial exposures. An excess of thyroid cancer possibly was related to the low dose received by this organ. Ovarian damage caused by radiation may have been responsible for a low breast cancer risk (RR = 0.7), which was evident even among postmenopausal women. A substantial excess of lung cancer (RR = 3.7) largely may be due to misclassification of metastases and the confounding influence of cigarette smoking. Women who were under 30 or over 50 years of age when irradiated were at greatest absolute risk for developing a second cancer. The RR, however, was higher among those under age 30 years at exposure (RR = 3.9) than among older women. The expression period for radiation-induced solid tumors appeared to continue to the end of life. PMID- 3858585 TI - Cutaneous malignant melanoma in association with other skin cancers. AB - A case-control study of 232 cases of cutaneous malignant melanoma and 232 matched controls was performed to assess the association of the disease with nonmelanotic skin tumors--basal cell carcinomas, squamous cell carcinomas, and solar keratoses. There was a fourfold increase in risk of melanoma of all types when actinic tumors were present on the face. The risk was not restricted to the lentigo malignant melanoma class as might be expected but was significantly raised for superficial spreading melanoma and nodular melanoma as well (relative risk, 2.8; 95% confidence interval, 1.1-7.2). This relationship with lesions known to be associated with high-dose solar UV irradiation was supported by quantitative evidence that heavy sun exposure was associated with an increased risk of malignant melanoma. PMID- 3858586 TI - Influence of estrogen administration on tumor characteristics and survival in women with cutaneous melanoma. AB - A prospective study on 289 women with clinical stage I cutaneous melanoma was done to determine the relationship between estrogen administration, tumor characteristics, and survival. Eighty-two women took oral contraceptives (OC) and 44 took menopausal estrogens (MPE) prior to the diagnosis of melanoma. Users of OC presented with thinner primary tumors than nonusers of OC (P less than .01). A similar trend was observed in users of MPE. Women who used OC in the year prior to the diagnosis of melanoma had statistically thinner tumors than those who had discontinued use of OC more than 1 year prior to diagnosis (P less than .025). A statistically significant preponderance of truncal lesions was observed among users of OC (P less than .01). Other tumor characteristics were unaltered by estrogen administration. Duration of use and time in relation to diagnosis of melanoma did not affect survival. Women who took hormones had slightly better 5- and 9-year survival rates than nonusers. These results suggest that prior estrogen use and, particularly, use of OC in women developing melanoma have no deleterious effect. PMID- 3858587 TI - Benign breast disease and consumption of beverages containing methylxanthines. AB - The relationship between methylxanthine (Mx) consumption and benign breast disease was evaluated in a case-control study of 288 women with histologically confirmed benign breast lumps (203 dysplastic lesions and 85 benign tumors) and 2 groups of control women--285 patients in the hospital for acute conditions apparently unrelated to the consumption of Mx-containing beverages and 291 outpatients. The relative risk estimates of dysplastic breast lesions (fibrocystic disease), with allowance for all identified potential distorting factors, for women who drank 1-2 or 3 or more cups of coffee per day were 4.1 and 6.4, respectively, when the hospital controls were the comparison group and 2.0 and 3.7, respectively, when the outpatient controls were the comparison group. The relationship was even stronger when the total consumption of Mx-containing beverages (coffee plus tea) was considered and increased with increasing duration of use. The association was not explained by any of the major risk factors for fibrocystic breast diseases or by differences in general characteristics or other lifestyle habits between cases and controls. Mx consumption was not related to the risk of benign breast tumors (fibroadenomas). These findings support the hypothesis that Mx consumption is related to the risk of dysplastic lesions of the breast. PMID- 3858588 TI - Age at first pregnancy and risk of colorectal cancer: a case-control study. AB - Results from a case-control study of colorectal cancer conducted in Toronto and Calgary, Canada, are reported with respect to pregnancy-related variables. A total of 158 female "ever-married" colon cancer cases, 71 rectum cancer cases, 242 neighborhood controls, and 257 hospital controls were interviewed to obtain a complete pregnancy history. The results indicate a strong protective effect of early age at first pregnancy for both colon and rectum cancers, with little or no effect noted for the total number of pregnancies. There is a suggestion that age at first pregnancy may have a greater effect on right colon cancer than on left colon cancer. In addition, there also is a suggestion that non-live-birth outcomes may be a risk factor for both colon and rectum cancer. The similarity of these results to those of other studies on large bowel cancer and on breast cancer support the hypothesis that carcinogenesis in the large bowel may be at least partly mediated by female sex hormones. PMID- 3858589 TI - Lung cancer and use of cigarettes: a French case-control study. AB - A case-control study of 1,625 cases and 3,091 controls was conducted in France from 1976 to 1980 to compare the effects of different smoking habits, especially the use of filter cigarettes, tobacco types (light or dark), and the use of hand rolled or manufactured cigarettes on the occurrence of lung cancer. All cases had histologically confirmed lung cancer; the controls were matched by sex, age, hospital of admission, and interviewer. The reported results concern only male nonsmokers and males who smoked (or had smoked) cigarettes exclusively, i.e., a total of 1,217 Kreyberg I and Kreyberg II cancer cases and 1,915 controls. Cigarette smoking was associated with both Kreyberg I and Kreyberg II cell categories although with different relative risks (RR) (17.2 and 3.6, resp.). Within the Kreyberg I category, RR were significantly increased (P less than .0001) with certain indices of duration and intensity of cigarette exposure, such as early age at first cigarette smoked, daily consumption, depth of inhalation, and duration of smoking. A significant difference in risk was found within the Kreyberg I category for nonfilter versus filter cigarette smokers (RR = 18.1 and 10.9, resp.) and dark versus light tobacco smokers (RR = 18.1 and 4.9, resp.) but not for hand-rolled versus manufactured cigarette smokers (RR = 19.8 and 16.0, resp.). When all the covariates were taken into account in a matched logistic regression, lung cancer risks for nonfilter versus filter cigarette smokers was RR = 1.23, for hand-rolled versus manufactured cigarette users RR = 1.22, and for dark versus light tobacco users RR = 1.94. PMID- 3858590 TI - Thyroid tumors following thymus irradiation. AB - About 2,650 persons who received X-ray treatment for purported enlarged thymuses in infancy and 4,800 sibling controls have been followed by mail questionnaire for an average of 29 years to observe their incidence of thyroid tumors. The follow-up rate in the latest survey was 88% in both groups. The radiation doses to the thyroid gland ranged from 5 to over 1,000 rad, with 62% receiving less than 50 rad. To date 30 thyroid cancers and 59 benign thyroid adenomas have been detected in the irradiated group, as compared with 1 thyroid cancer and 8 adenomas in the control group. The relative risks in the irradiated group were about 45 for thyroid cancer and 15 for benign thyroid adenomas. The dose-response curve for thyroid cancer was essentially linear, although a linear-quadratic curve could not be ruled out. For thyroid adenomas the risk per rad was somewhat greater at lower doses than at high doses. For both thyroid cancers and adenomas the absolute excess risk per rad was two to three times as great in females as males. Within the limitations imposed by the treatment regimens and the sample size, there was no indication of a "sparing" effect due to dose fractionation for either thyroid cancers or adenomas. There was an excess risk for both malignant and benign thyroid tumors for at least 40 years post irradiation. For thyroid cancer the radiogenic risk appeared to be additive with respect to time, rather than the age-specific natural rates of cancer being multiplied. PMID- 3858591 TI - In vitro peripheral monocyte culture: possible use as a prognostic indicator for renal cell carcinoma patients. AB - An in vitro assay was applied to follow 39 patients with renal cell carcinoma. A mononuclear cell-rich fraction was cultured from peripheral blood of patients over a period of 7 days. The number of adherent matured monocytes (macrophages) was analyzed and quantitated at the end of the culture period. Functional activities were analyzed by antibody-coated sheep red blood cells and nonspecific esterase staining techniques. Macrophage yield in patients with detectable tumor burden was 2.06 +/- 2.81 X 10(4) cells/ml blood, and mean values at 3, 6, and 9 months post nephrectomy were 3.67 (n = 21), 6.73 (n = 12), and 9.41 (n = 10) X 10(4) cells/ml blood, respectively. Some of the patients were followed over 30 months. The improvement was significant, and macrophage yield was close to normal values (8.24 +/- 3.14 X 10(4) cells/ml). In the absence of other reliable in vitro assays for these patients, this assay appears to be highly useful in following these patients during the postsurgical period. PMID- 3858592 TI - Cutaneous malignant melanoma and fluorescent lighting. AB - A population-based case-control study of cutaneous malignant melanoma occurring during 1980-81 was conducted in Perth, Western Australia. Three hundred and thirty-seven cases and 349 matched controls were reinterviewed in 1983 with regard to their fluorescent light exposure. The incidence rate of all melanomas was not associated with rate of exposure or cumulative exposure to all fluorescent lights or just those without diffusers. Separate analyses by histogenetic type and, where possible, body site of melanoma showed, in most instances, no consistent association between incidence rate of melanoma and exposure to fluorescent lights without diffusers. Incidence of melanomas of unclassifiable histogenetic type, however, increased with increasing duration of exposure (P-value for trend .02). This association was weaker and the P-value higher (.11) when exposure was considered only in residential rooms and offices, where light fittings are closest to the subject. Adjustment for the effects of total and intermittent sun exposure on melanoma rates did not alter the above trends appreciably. PMID- 3858593 TI - Epidemiology of breast cancer in a Mexican-American population. AB - This is a historical cohort study of breast cancer mortality in the Mexican American community of Laredo, Texas. Included in this study were virtually all breast cancer deaths recorded in Laredo since 1875; controls matched to cases by age and birth year were drawn from the total population. Fertility history and family history of disease for cases and controls were retrieved from the genealogical data base reconstructed by our group from church and civil records for the whole city of Laredo. The findings of this study show an association between breast cancer risk and age at first birth. This study confirms familial risk to be a factor in breast cancer risk. Unlike postmenopausal breast cancer mortality in the total U.S. population, which has increased only slightly in the last 30-40 years, postmenopausal breast cancer death rates in Laredo have almost tripled since the 1940's. PMID- 3858594 TI - Underground mining, smoking, and lung cancer: a case-control study in the iron ore municipalities in northern Sweden. AB - A case-control study of lung cancer in males was performed in two municipalities in northern Sweden with large iron ore mines. Previous studies had revealed an increased lung cancer risk for underground workers in these mines, with all probability related to radon daughter exposure. Data concerning underground mining and smoking were obtained from questionnaires. All analyses suggested an interaction of a multiplicative type between underground mining and smoking in the causation of lung cancer in this population. The calculated population etiologic fraction was about 45% for underground mining and about 80% for smoking. PMID- 3858595 TI - Relationship between thiol depletion and chemosensitization in a transplantable murine bladder tumor. AB - The effect of pretreating the C3H/He mouse MBT-2 tumor with diethyl maleate (DEM), buthionine-S R-sulfoximine (BSO), or misonidazole (MISO) before administration of cyclophosphamide (CTX) was studied with the use of tumor volume doubling time delay as an endpoint. The kinetics of glutathione (GSH) depletion and regeneration in the tumor and in the host liver were determined after treatment with the thiol-depleting agents. CTX was administered at appropriate time points. MISO was the most effective chemosensitizer at a time point at which tumor GSH content was 80-85% of the control value. Both BSO and DEM were chemosensitizers in relation to the degree they had reduced tumor GSH levels. This chemosensitization was significant at 50% GSH reduction. By combining MISO and BSO at doses lower than previously used for each agent alone, highly effective sensitization of subsequent CTX was obtained. PMID- 3858596 TI - Effect of castration and 17 beta-estradiol pulse on cell proliferation in the uterus and the MXT mouse mammary tumor. AB - The effects of a single 17 beta-estradiol (E2) injection on cell proliferation were studied in 3 groups of 30 mice transplanted with the MXT ovary-dependent mammary tumor. In group A, all animals were castrated prior to tumor implantation; groups B and C had intact ovaries at the time of transplantation, but group B was left intact throughout the experiment, while group C underwent castration 4 weeks later. On day 40 in groups B and C and on day 80 in group A, in which tumor development was significantly delayed, the same procedure for testing the effects of E2 was applied: Ten controls received 0.1 ml saline ip and were killed on the next day; 4 lots of 5 mice received 0.25 micrograms E2 ip and were killed one by one at 12-hour intervals. Exactly 1 hour prior to sacrifice, each animal received 25 microCi [methyl-3H]thymidine ip. Histologic sections of tumors and uteri were processed for autoradiography, and nuclear thymidine (dThd) labeling indices (LI) were determined. All tumors of group A grafted under unfavorable hormonal conditions were poorly differentiated, and E2 injection induced no appreciable changes in their dThd LI. Tumors B and C were well differentiated adenocarcinomas, in which E2 induced significant modifications of cell proliferation. In group B, complex changes in dThd LI occurred in tumors as well as in uteri, probably due to interferences with the ovarian hormonal production. In group C, E2 produced a marked rise in dThd LI in tumors, lasting from the 12th to the 36th hour after its injection. Stimulation was maximum at the 24th hour, representing a 2.8-fold increase over mean basal dThd LI. It is concluded that the presence of an intact ovarian function at the time of transplantation is critical for maintaining the properties of hormone dependence in MXT tumors. In mice castrated after tumor implantation, a single E2 injection induces a marked and partially synchronous proliferation of neoplastic cells. The hypothesis that such hormonal manipulation might amplify the killing effect of cell cycle- or phase-specific cytotoxic drugs could be adequately tested with this model. PMID- 3858597 TI - Test of catechol, tannic acid, Bidens pilosa, croton oil, and phorbol for cocarcinogenesis of esophageal tumors induced in rats by methyl-n amylnitrosamine. AB - Catechol (CAS: 120-80-9), given in drinking water to rats, was the most effective of 5 phenols in enhancing [3H]thymidine incorporation [( 3H]dThd-l) into esophageal DNA. To test for esophageal cocarcinogenesis, groups of 30 male MRC Wistar rats received 3 weekly ip injections of 25 mg methyl-n-amylnitrosamine [(MNAN) CAS: 13256-07-0]/kg. From the time of the first MNAN injection, each group also received catechol, tannic acid (CAS: 1401-55-4), dried leaves of Bidens pilosa L., or croton oil (CAS: 8001-28-3) (respectively, 2, 10, 50, and 2 g/kg semipurified diet), or were given 20 ip injections of 6 mg phorbol (CAS: 17673-25-5)/rat. The rats were killed after 20-45, 46-52, or 53-72 weeks (subgroups A, B, and C). In the group given MNAN alone, most esophageal papillomas developed during the first 45 weeks. Both catechol and B. pilosa significantly increased the esophageal papilloma multiplicity (No. of papillomas/rat) induced by MNAN, with a maximum tumor yield of 2.2 times that in the corresponding subgroup treated with MNAN alone. Papilloma multiplicity increased from subgroup A to subgroup C in the MNAN plus B. pilosa group but not in the MNAN plus catechol group. No tumors were induced by the test cocarcinogens given without MNAN. We concluded that a) an increased esophageal [3H]dThd-I indicates potential cocarcinogenicity and b) catechol and B. pilosa were weak esophageal cocarcinogens. These results support the view that catechol in cigarette smoke and B. pilosa as eaten in South Africa contribute to the etiology of human esophageal cancer. PMID- 3858598 TI - Effect of dietary fat on growth kinetics of transplantable mammary adenocarcinoma in BALB/c mice. AB - The growth of mammary adenocarcinomas in BALB/c mice fed a diet containing 10% corn oil (CO), which has about 60% of its fatty acids as linoleate, was significantly greater than that for tumors in mice fed diets containing either 10% hydrogenated cottonseed oil (HCTO), which has no linoleate, or 10% CO plus 0.003% indomethacin (IM). The proportion of the tumor occupied by the various cell types was quantitated from histologic sections for 2 different mammary adenocarcinomas. At 2 weeks post implantation the degree of inflammatory cell (IC) infiltration of the first adenocarcinoma (tumor IX) did not account for the difference in tumor mass induced by dietary fat. This conclusion was confirmed by a study of a group of tumors arising from hyperplastic alveolar nodule transplants, which showed a similar dietary response but in which IC infiltration was minimal even in the largest tumors. Cell cycle parameters of tumor IX were determined by the fraction-of-labeled-mitoses (FLM) procedure. No differences were found in the duration of the G1, S, G2, or M phases of the cell cycle or the total cell cycle time in neoplasms from the CO and HCTO diet groups. The fraction of tumor cells dividing in neoplasms from the 2 diet groups was also identical. The only parameter that was significantly different was the rate of tumor cell loss when determined by both indirect (FLM) and direct [( 125I]iododeoxyuridine) methods. Tumor cell loss for adenocarcinomas from mice fed HCTO or CO plus IM was approximately twice that obtained for tumors from the CO-fed mice. These observations on tumor cell loss were discussed in terms of: the influence of dietary linoleate on the size of mammary tumors and the involvement of prostaglandins in this process. PMID- 3858599 TI - Inhibition by 3-amino-1H-1,2,4-triazole of hepatic tumorigenesis induced by diethylstilbestrol alone or combined with N-nitrosobutylurea in WF rats. AB - Six groups of inbred male WF rats were castrated at 40 days of age. Group 1 was given no further treatment; groups 3-6 received sc implantations of 5.0 mg diethylstilbestrol [(DES) CAS: 56-53-1]. At 50-55 days of age, groups 5 and 6 were given drinking water containing 5.0 mg N-nitrosobutylurea [(NBU) CAS: 869-01 2] per day for 30 days. After the termination of NBU treatment, groups 2, 4, and 6 were given 3-amino-1H-1,2,4-triazole (AT), considered an inhibitor of hydroperoxidases, in the drinking water throughout the experiment. Castrated male rats or rats castrated and treated with AT alone developed neither hepatic tumors nor pituitary tumors. The hepatic tumor incidence, the size and total number of hepatic tumors, and the mean liver weight were significantly reduced in rats given the DES-NBU combination and slightly reduced in rats given DES alone when AT was administered. In contrast, AT treatment did not change the pituitary tumor incidence and the mean pituitary weight. The thyroid gland weights were approximately 7-44 times greater in AT-treated groups than those in each corresponding control group. These data indicate that AT inhibited hepatic but not pituitary tumorigenesis and caused enlargement of the thyroid gland. The present study, therefore, provides evidence that the metabolic activation of DES by oxidation is involved in rat liver carcinogenesis. PMID- 3858600 TI - Enhancement of epidermal carcinoma formation by prolactin in mice. AB - Long-term administration of prolactin (PRL) markedly enhanced the induction of epidermal squamous cell carcinomas by a chemical carcinogen, 3-methylcholanthrene [(MCA) CAS: 56-49-5], in Swiss male albino mice. DNA radioactivity and quantitative estimation of autoradiographs with the use of [3H]thymidine revealed a significant increase in DNA content (twofold) and in the percentage of labeled neoplastic nuclei in mice treated with PRL plus MCA (48.50%) as compared to that in mice treated with MCA alone (23.50%). Ultrastructural and cytologic studies revealed the predominance of a trabecular-hepatoid type of epidermal carcinoma with advanced nuclear irregularities, glycogen granules, mirror-image cells, and phagolysosomes in PRL-MCA-treated carcinomas as compared to characteristic squamous neoplastic cells with enlarged nuclei, tonofilaments, and keratin formation in epidermal carcinomas following treatment with MCA alone. Scanning electron microscopy revealed the predominance of rounded cells covered by numerous thick microvilli and blebs with an intense stromal reaction following PRL-MCA administration as compared to characteristic polyhedral cells covered by small microvilli following treatment with MCA alone. These findings demonstrate that PRL is an important hormone in epidermal neoplastic cell growth and differentiation. PMID- 3858601 TI - Tumorigenic effects of direct- and indirect-acting chemical carcinogens in rats on a restricted diet. AB - The influence of diet restriction on induction of intestinal tumors in Sprague Dawley rats by two unique carcinogenic agents was investigated: methylazoxymethanol acetate [(MAM) CAS: 592-62-1], which requires metabolic activation, and N-methylnitrosourea [(MNU) CAS: 684-93-5], which is a direct acting carcinogen. Most of the tumors induced by MAM developed in the small intestine and less frequently in the colon, but MNU produced tumors predominantly in the colon. Among rats fed the restricted diet (12 g/day), the production of tumors by MAM was significantly reduced compared to that of counterpart rats on the ad libitum diet. However, dietary restriction did not modify the production of tumors in rats by MNU. The same relationship of diet restriction to tumor induction was demonstrable when MAM and MNU were administered to the same test rats: Numbers of MAM-related tumors, especially in the small intestine, were reduced and numbers of MNU-related tumors in the colon were unchanged. Dietary restriction modified the tumorigenic response of rats to MAM but not to MNU. PMID- 3858602 TI - Age at first birth and risk of epithelial ovarian cancer. PMID- 3858603 TI - Dentistry's dilemma. PMID- 3858604 TI - Studies on microheterogeneity of intracellular transcobalamins of blood cells in special reference to leukemia. PMID- 3858605 TI - 17 beta-hydroxysteroid dehydrogenase activity in leiomyoma and myometrium and its relationship to concentrations of oestrone, oestradiol and progesterone throughout the menstrual cycle. AB - The activity of the enzyme 17 beta-hydroxysteroid dehydrogenase (17 beta-OHSD) and concentrations of oestrone (E1), oestradiol (E2) and progesterone have been measured in leiomyoma and myometrium obtained at different stages of the menstrual cycle. Apart from conversion of E2 to E1 in the proliferative phase, no significant difference in enzyme activity was noted between normal and tumour tissue. However, interconversion in both tissues was shown to be higher in the secretory than the proliferative phase of the menstrual cycle. E1 concentrations were significantly higher (P less than 0.01) in leiomyoma than in myometrium, obtained during the proliferative phase. Concentrations of both oestrogens, in some tumour and normal tissues, were higher in the proliferative than the secretory phase. Secretory phase tissues contained higher concentrations of progesterone than those obtained in the proliferative phase of the menstrual cycle. Considerable differences in both enzyme activity and steroid concentrations were noted in different areas of the same tumour. PMID- 3858606 TI - Metabolism of androgens in the seminal vesicles and the different lobes of the prostate in young mature rats. AB - Oxidation and reduction of 4-androstene-3,17-dione (androstenedione), 17 beta hydroxy-4-androsten-3-one (testosterone), 17 beta-hydroxy-5 alpha-androstan-3-one (DHT), 5 alpha-androstan-3 alpha,17 beta-diol (3 alpha-A'diol) and 5 alpha androstane-3 beta,17 beta-diol (3 beta-A'diol) were measured in homogenates from ventral (VP), dorsal (DP) and lateral prostate (LP), the coagulating gland (CG) and seminal vesicle (SV) of the intact sexually mature rat using NAD(H) or NADP(H) as cofactors. The specific activity of the various enzymes varied significantly between the different organs. 5 alpha-Reductase activity was highest in the DP and the CG, and undetectable in the LP. 17 beta-Hydroxysteroid oxidoreductase (17 beta-HSOR) activity was mainly confined to the LP. 3 alpha Hydroxysteroid oxidoreductase (3 alpha-HSOR) activity was also highest in the LP. In the VP the highest 3 alpha-HSOR activity was recorded using NAD(H) as cofactor. In the other organs, similar or higher enzymatic activities were measured using NADP(H) as added cofactor. 3 beta-Hydroxysteroid oxidoreductase (3 beta-HSOR) activity was high in the LP and low or undetectable in the other tissues. Our results indicate that isoenzymes of 3 alpha-HSOR, 3 beta-HSOR and 17 beta-HSOR are present in the accessory sex organs of the rat. PMID- 3858607 TI - Age dependent changes in androgen metabolism in the rat prostate. AB - Oxidation and reduction of androstenedione, testosterone, dihydrotestosterone (DHT), 5 alpha-androstan-3 alpha,17 beta-diol and 5 alpha-androstane-3 beta,17 beta-diol (3 alpha- and 3 beta-A'diol) were measured in homogenates from the ventral prostate (VP), dorsal prostate (DP), lateral prostate (LP), the coagulating gland (CG) and seminal vesicles (SV) in intact rats of different ages from young mature (3-6 months) to senescent rats (20-30 months). Some very old intact rats (30-32 months) were treated with testosterone in order to rule out the effect of this hormone on androgen metabolism. The enzymatic activities for young mature rats were significantly altered by increasing age, both with regard to differences between the various organs as well as differences in cofactor requirement. With increasing age, the specific activity of most enzymes gradually decreased. With testosterone as substrate, 5 alpha-reductase activity was significantly reduced in the old rats in all tissues studied and was undetectable in the oldest animals in the VP and the SV. On the other hand, 5 alpha-reductase could not be recorded in any tissue in any tissue in old rats when androstenedione was the substrate. 3 alpha-Hydroxysteroid oxidoreductase (3 alpha HSOR) in the VP was the only enzyme which did not decrease in activity by increasing age. In the other lobes this enzyme activity decreased similar to 3 beta-hydroxysteroid oxidoreductase (3 beta-HSOR) and the 17 beta-hydroxysteroid oxidoreductase (17 beta-HSOR) activity. Administration of testosterone to old rats increased the specific activity of most of the enzymes studied. PMID- 3858608 TI - A new dihydrotestosterone-forming index (DHTi). AB - A new index (DHTi) for the net formation of dihydrotestosterone (DHT) in a specific tissue is presented. This index is based on the main metabolic pathways forming DHT as well as on the main enzymatic activities removing DHT from the tissue. In the rat prostate, the DHTi is different in the various prostatic lobes. The index is highest in the ventral prostatic lobe, intermediate in the dorsal prostate and coagulating gland, and very low or undetectable in the seminal vesicles and the lateral prostatic lobe. With increasing age of the rats, the DHTi decreased. Testosterone treatment to old rats leads to an increased index. PMID- 3858610 TI - The role of platelet-derived growth factor on human pluripotent progenitor (CFU GEMM) growth in vitro. AB - The effect of serum on the proliferation of human bone marrow pluripotent progenitor cells (CFU-GEMM), was compared to that of fresh frozen plasma (FFP). Serum significantly increased the number of mixed erythroid-granulocytic megakaryocytic colonies (CFU-GEMM) and erythrocytic bursts (BFU-E) in this assay system (p less than 0.01 and 0.02, respectively). Two possible explanations for this finding were considered: first the presence of citrate-phosphate-dextrose (CPD) in plasma but not in serum, and second the presence of platelet-derived growth factor (PDGF) in serum but not in plasma. CPD was indeed found to have an inhibitory effect on growth of colonies of all types when added to serum stimulated cultures. Nevertheless, when heparinized plasma was compared to serum from the same donors, growth of CFU-GEMM and BFU-E was higher in the serum stimulated cultures (p less than 0.001 and p less than 0.05, respectively). PDGF at concentrations of 120-240 pM was found to enhance the formation of CFU-GEMM and BFU-E by three- and four-fold respectively when added to cultures containing FFP but not when added to cultures containing serum derived from whole blood (WBS). Purified PDGF added at the same concentrations, to cultures containing platelet-poor derived serum (PDS), promoted similar increases in growth of CFU GEMM and BFU-E but not of granulocytic-macrophage or megakaryocytic colonies. Whether PDGF has a direct action on CFU-GEMM or its growth promoting activity is via an interacting cell population is currently being studied. PMID- 3858609 TI - A new leukemia cell line with Philadelphia chromosome characterized as basophil precursors. AB - A new myeloid cell line (KU812) was established from a patient with blastic crisis of chronic myelogenous leukemia. His blasts were morphologically characteristic of immature basophils and basophil colonies were grown in agar culture of the blood mononuclear cells. Suspension culture of his blood cells was continued for more than 2.5 years. The KU812 cells morphologically showed a fine reticular nuclei with nucleoli, and some of them contained metachromatic granules with toluidine blue (TB) staining. These granules were positive for astra blue (AB) staining. Immunological marker studies revealed that there were no lymphoid characters except Fc receptors. The KU812 cells grew colonies in in vitro agar cultures, which were proved to be composed of basophils by TB staining and AB staining. Cytogenetical analysis showed marked aneuploidy and was positive for the Philadelphia chromosome (Ph1). The cell lysate was proved to contain histamine. These data suggest that KU812 is a cell line from leukemic basophil precursors. This is the first human basophil cell line, and KU812 will be useful in clarifying the mechanism of basophilic differentiation of the stem cells. PMID- 3858611 TI - Acute erythroblastic leukemia presenting as acute undifferentiated leukemia: a report of two cases with ultrastructural features. AB - This report describes two elderly patients with acute leukemia in which blast cells were undifferentiated with conventional light microscopy (L.M.) and cytochemistry. Blast cells were identified as belonging to the erythroblastic line by their ultrastructural features: glycogen deposits, lipidic vacuoles, cytoplasmic ferritin molecules and rhopheocytotic invagination. Moreover, blast cells were surrounding a central macrophage. Thus, these two patients had acute erythroblastic leukemia which differs from erythroleukemia (M6 of FAB classification) in which blast cells present myeloblastic characteristics. PMID- 3858612 TI - Inhibition of proliferation and differentiation of mouse erythroleukemia cells by hydroxamic acids. AB - The effect of several hydroxamic acids on cell growth and differentiation was studied in vitro in cultures of Friend erythroleukemia cells, line F4-6. Terminal differentiation in F4-6 cells can be induced by exposure to a variety of structurally unrelated compounds or to conditions which inhibit cell growth. Hydroxamic acids do not induce erythroid differentiation but interfere with both cell growth of F4-6 cells and the induction of differentiation by DMSO in these cells. DMSO-induced terminal differentiation is inhibited even when F4-6 cells are pretreated for 24 h with hydroxamates followed by removal of the hydroxamates and transfer to fresh medium containing 1% DMSO. Reduction of cell growth by hydroxamates is completely and immediately reversible upon removal. In contrast, the inhibition of DMSO inducibility is not reversible within 24 h. Cell pretreated with hydroxamates for 24 h prior to a 96 h-exposure to DMSO show the same reduction in synthesis of hemoglobin as cells simultaneously exposed to DMSO and hydroxamates. PMID- 3858613 TI - Regeneration of membrane sialic acid after neuraminidase treatment of leukemic granulocytes. AB - Granulocytes from patients with chronic myelogenous leukemia (CML) were studied for their ability to regenerate surface sialic acid following treatment with Vibrio cholera neuraminidase (VCN) in vitro. Immediately after neuraminidase treatment, CML and normal granulocytes showed similar incorporation of radioactivity after surface labelling with sodium periodate/potassium-H3 borohydride (PI/BH3(4)). CML granulocytes treated with neuraminidase then incubated for 18 h in nutrient medium showed strikingly increased PI/BH3(4) labelling, usually greater than initial pretreatment values, consistent with a rapid reappearance of sialic acid in the cell membrane. This pattern was not seen in normal granulocytes. The aberrant regeneration of sialic acid in CML granulocytes in vitro could be inhibited by addition of 3 X 10(-6) M retinoic acid, suggesting either a direct effect on membrane glycoconjugate synthesis or an association with granulocyte differentiation. PMID- 3858614 TI - How a computer can help you get more customers. PMID- 3858615 TI - Want to maximize your efficiency? Computerize! PMID- 3858616 TI - LMT's guide to computer systems. PMID- 3858617 TI - Changing dental practices: how they affect us. PMID- 3858618 TI - Population statistics: our guide to the future. PMID- 3858619 TI - Which to use, stain or modifier? PMID- 3858620 TI - Porcelain under control: how problems are eliminated. PMID- 3858621 TI - Doing sales 'right'. PMID- 3858622 TI - How to compare job applicants and pick a winner. PMID- 3858624 TI - Buyer's guide to articulators. PMID- 3858623 TI - Phone personality: telemarketing's tool. PMID- 3858625 TI - How to target a market area. PMID- 3858626 TI - LMT's bi-annual pricing survey. PMID- 3858627 TI - The dental lab and the future. Licensure: not why, but how. PMID- 3858629 TI - What makes someone a good manager? PMID- 3858628 TI - The dental lab and the future. Changing certification regulations: how price structures would improve. PMID- 3858630 TI - Are you working your way to success...or to heart failure? PMID- 3858631 TI - Brain catecholamine alterations accompanying development of anorexia in rats bearing the Walker 256 carcinoma. AB - In the present study, the relationship between central catecholamine levels and the anorexia induced by Walker 256 carcinoma was investigated. Results indicate that the anorexia is not due to depletion of central catecholamines. Tumor bearing rats sacrificed at night, when spontaneous food intake is selectively depressed, showed increased norepinephrine levels in the hypothalamus, cortex and hippocampus and increased dopamine levels in the striatum, midbrain, and cortex. Increased nighttime hypothalamic norepinephrine levels were positively correlated with the magnitude of spontaneous food intake in tumor rats. PMID- 3858632 TI - Molecular evidence for partial inactivation of Y loops in T(X:Y)56 males from D. hydei. AB - Using loop-specific DNA clones, we established that the T(X:Y)56 (Hackstein and Hennig 1982) chromosome, formerly thought to be deleted for the Yshort arm and the associated 'nooses' loops is actually an XYS X YL combination. It carries, adjacent to the translocation junction, the complete and uninterrupted set of the two dysfunctional 'nooses' domains. The morphologically altered and functionally defective loops are transcribed at about 50% of the normal rate. Transcripts in one of the two 'nooses' domains are preferentially underrepresented and their distribution in the spermatocyte nucleus is distorted, presumably as a consequence of a spreading effect. No alteration in transcript size or in the correct strand selection, and no variegation of transcription on the single spermatocyte level, were observed. In another translocation T(X:Y)97, in which 'tubular ribbons' were reported to be inactivated (Hess 1970), complete elimination of DNA sequences is observed. A possible mechanism for the position effect inactivation of Y loops in X:Y translocations is discussed briefly. PMID- 3858633 TI - [Variations in salivary and blood transaminases, electrolytes and LDH in cardiopathy patients]. PMID- 3858635 TI - [Clinico-statistical and therapeutic observations on 196 cases of impacted lower third molars]. PMID- 3858634 TI - [Sjogren's syndrome: new research aspects. III. Diagnostic update]. PMID- 3858636 TI - [Aspergillosis of the maxillary sinus]. PMID- 3858637 TI - [Incidence of dental caries in diabetics. A clinico-statistical report on 420 outpatients]. PMID- 3858638 TI - [Tooth gemination. Clinical contribution]. PMID- 3858639 TI - [Salivary test of the insulin-dependent diabetic patient in childhood]. PMID- 3858641 TI - [Mesenchymal type of chondrosarcoma of the jaws]. PMID- 3858640 TI - [Solitary plasmacytoma of the jaws. A case report of mandibular localization]. PMID- 3858642 TI - [Osteomas of the mandibular condyle. A case report of particular surgical interest]. PMID- 3858643 TI - [Serial analysis of the polishing capacity of 3 spherical amalgams in 1 visit]. PMID- 3858645 TI - [Comparative morphological analysis of different types of extrahard plasters examined by scanning electron microscopy]. PMID- 3858644 TI - [Detergents for dental waxes: an evaluation based on experimental data]. PMID- 3858646 TI - [Use of 6-methylprednisolone in maxillofacial surgery]. PMID- 3858647 TI - [New means of prophylaxis and polishing. Ultrastructural analysis of the enamel surface]. PMID- 3858649 TI - [Enamel projections in human molars. Their incidence and distribution]. PMID- 3858648 TI - [Humoral immunity at the serum and saliva levels in periodontopathies]. PMID- 3858650 TI - [Presence of accessory foramina in permanent molars]. PMID- 3858651 TI - [Causes of pulp degeneration]. PMID- 3858652 TI - [A case of applying biofeedback in dentistry]. PMID- 3858653 TI - [Comparative test of different types of removable dentures by means of photoelastic reflection]. PMID- 3858654 TI - [Pseudoankylosis of the temporomandibular joint due to fibrosis of the temporal muscle following craniotomy. A report of 2 cases]. PMID- 3858655 TI - [Functional therapy of condylar fractures]. PMID- 3858656 TI - [Clinical and therapeutic problems of fractures of the zygomatico-orbital malar complex]. PMID- 3858657 TI - [Regeneration of the bony cavities remaining after interventions on the jaws for osteolytic areas. Our clinical experience]. PMID- 3858658 TI - [Possibility for partial reconstruction of the mandibular bone]. PMID- 3858659 TI - [Case of an orosinusal fistula with an outcome of particular surgical interest]. PMID- 3858660 TI - [The last Yanomami: tobacco as an energy source and as a cariostatic]. PMID- 3858661 TI - A successful plaque control program. PMID- 3858662 TI - Effects of 1-beta-D-arabinofuranosylcytosine and phorbol ester on differentiation of human K562 erythroleukemia cells. AB - We have previously demonstrated that 1-beta-D-arabinofuranosylcytosine (ara-C) induces hemoglobin synthesis in human K562 erythroleukemia cells. The present study extends these findings by demonstrating that ara-C treatment of K562 cells results in both increased heme synthesis and accumulation of alpha-, gamma-, epsilon-, and zeta-globin RNA. The results also demonstrate that ara-C enhances K562 cell surface expression of glycophorin. Furthermore, we demonstrate that phorbol ester (12-O-tetradecanoylphorbol-13-acetate; TPA) inhibits the effects of ara-C on heme production, accumulation of globin RNA, and glycophorin expression. The inhibitory effect occurs maximally when K562 cells are treated with TPA before undergoing ara-C-induced commitment to erythroid differentiation. These findings suggest that TPA inhibits an early step in the process required for ara C to enhance expression of genes involved in the erythroid program. PMID- 3858663 TI - Characterization of monoclonal antibodies against prostaglandin E2: fine specificity and neutralization of biological effects. AB - The specificity and heterogeneity of the immune response of BALB/c mice immunized with prostaglandin E2 (PGE2) coupled to thyroglobulin was studied. All the animals (n = 50) responded to PGB2, a transformation product of PGE2. However, following repeated injections most of the animals (n = 30) were also able to respond to PGE2. Cellular hybridizations were performed and five anti-PGE2 monoclonal antibodies were isolated and analysed. They are mainly directed against the ring and the omega-chain of PGE2 but their specificity toward the alpha-chain is more limited. The association constants are greater than to 1 X 10(9) M-1. The monoclonal antibody 8E.57.71 (Ka = 1.3 X 10(10) M-1) is particularly convenient for sensitive radioimmunoassays (detection limit 25pg/ml, when iodinated tracer is used). Anti-PGE2 monoclonal antibodies were found to neutralize the specific binding of [3H]PGE2 to rat brain hypothalamic receptors and to inhibit the PGE2 induction of rat fundus muscular contraction. PMID- 3858664 TI - [Sialic acid in human whole saliva. Reliability of assay methods and correlation with periodontal disease]. PMID- 3858665 TI - [Clinical estimation using the stereograph with the chew-in method. 1. A new recording instrument for mandibular movement]. PMID- 3858666 TI - [3 cases of duplication of the upper lateral incisor]. PMID- 3858667 TI - [Characteristics of the timing pattern of occlusal sounds]. PMID- 3858668 TI - The hyperlipidemia of the nephrotic syndrome. Relation to plasma albumin concentration, oncotic pressure, and viscosity. AB - Although hyperlipidemia is a common feature of the nephrotic syndrome, the distribution of cholesterol among the plasma lipoproteins and the mechanism of the enhanced hepatic synthesis of lipoprotein lipids are not well understood. We studied the distribution of cholesterol among the plasma lipoproteins, as well as the relation between total cholesterol and plasma albumin concentration, oncotic pressure, and viscosity in 20 consecutive adult patients with uncomplicated nephrotic syndrome. The total plasma cholesterol (mean +/- S.D., 302 +/- 100 mg per deciliter [7.8 +/- 2.6 mmol per liter]) and low-density-lipoprotein cholesterol concentrations (215 +/- 89 mg per deciliter [5.6 +/- 2.3 mmol per liter]) were elevated in most patients, but the high-density-lipoprotein cholesterol level was normal or low (46 +/- 18 mg per deciliter [1.2 +/- 0.5 mmol per liter]) in 95 per cent of the patients. Thus, many hypercholesterolemic patients with unremitting nephrotic syndrome may be at increased risk for atherosclerotic heart disease. A significant inverse correlation was found between the total plasma cholesterol concentration and both the plasma albumin concentration (r = -0.528) and the plasma oncotic pressure (r = -0.674), but not the plasma viscosity (r = +0.319). Enhanced hepatic synthesis of lipoprotein lipids may be stimulated by a decreased plasma albumin concentration or oncotic pressure but does not appear to be due to changes in plasma viscosity. PMID- 3858669 TI - HTLV-III antibody testing in sperm donors. PMID- 3858671 TI - Distinguishing the Philadelphia chromosome of acute lymphoblastic leukemia from its counterpart in chronic myelogenous leukemia. PMID- 3858670 TI - Prevalence of HTLV-III/LAV antibodies among Haitians. PMID- 3858672 TI - Does antibody screening of donors increase the risk of transfusion-associated AIDS? PMID- 3858673 TI - RAC stakes its claim. PMID- 3858675 TI - Type culture a source of gain. PMID- 3858674 TI - X-linkage of steroid sulphatase in the mouse is evidence for a functional Y linked allele. AB - In the human there is an X-linked gene affecting steroid sulphatase (STS) activity which, when deficient, is associated with X-linked congenital ichthyosis. The gene (STS) is located on the distal tip of the short arm and is only partially inactivated when it is on the inactive X-chromosome. In the mouse, the genetics of STS are not clear; the results of one study using XX:X0 oocyte comparisons indicated X-linkage, but three other studies using STS variants have produced segregation data compatible with autosomal linkage of murine STS. Here we present the results of STS assays of crosses of deficient C3H/An male mice to normal X0 animals which demonstrate X-linkage of STS in the mouse and indirectly indicate the existence of a functional STS allele on the Y-chromosome which undergoes obligatory recombination during meiosis with the X-linked allele. PMID- 3858676 TI - Developmental regulation of a cloned adult beta-globin gene in transgenic mice. AB - At different stages of mammalian development, distinct embryonic, fetal and adult haemoglobins are synthesized in erythroid cells, a process termed haemoglobin switching. The cellular and molecular mechanisms controlling haemoglobin switching have been intensively studied, but remain poorly understood. To study the developmental regulation of globin gene expression, we have produced transgenic mice in which cloned globin genes are present in erythroid cells throughout development. Recently, we reported that adult mice in several transgenic lines carrying a hybrid mouse/human adult beta-globin gene, expressed the gene in a correct tissue-specific manner. This finding raised the question of whether an exogenous globin gene could also be subject to appropriate stage specific regulation. We report here that the hybrid beta-globin gene, like the endogenous adult beta-globin genes, is inactive in yolk sac-derived embryonic erythroid cells and is expressed for the first time in fetal liver erythroid cells. Our results indicate that a stage-specific pattern of expression can be conferred by cis-acting regulatory elements closely linked to an adult beta globin gene. They also suggest that the embryonic and adult beta-globin genes in the mouse are activated (or repressed) by distinct trans-acting regulatory factors present in embryonic, fetal and adult erythroid cells. PMID- 3858677 TI - Protesting the proposed federal regulations for critically sick infants. PMID- 3858678 TI - Physicians' forum: medical direction and accountability for EMS advanced life support care in rural North Carolina. PMID- 3858679 TI - The impact of prospective payment for physician fees on medical specialists. PMID- 3858680 TI - The dark night of the soul--disulfiram toxicity. PMID- 3858681 TI - [Microbial aspects in the epidemiology of dental caries and periodontal disease]. PMID- 3858682 TI - [Dental health of 6- and 12-year-old children in northeastern Friesland. Results of an epidemiologic caries survey in 1982 and comparison of data from surveys in 1973, 1976 and 1979]. PMID- 3858683 TI - [Efficiency of dental education]. PMID- 3858684 TI - [Local fluoride application as a preventive measure in caries. History of studies on clinical application]. PMID- 3858685 TI - [Allergy to nickel, cobalt and chromium: dermatological studies using skin tests]. PMID- 3858686 TI - [Intra-oral injuries in children]. PMID- 3858687 TI - [Calcifying odontogenic cyst. Review of 3 case reports]. PMID- 3858688 TI - [Electronic canal length determination. A clinical evaluation of the Neosono]. PMID- 3858689 TI - [Oral health. II. The development of an index for measuring the quality of restorative care in 15-year-old children]. PMID- 3858690 TI - [Clinical experimental field studies of the caries-preventive effect of a fluoride lacquer]. PMID- 3858691 TI - [The importance of standardized criteria in the evaluation of dental working models]. PMID- 3858692 TI - [Indonesian gold fillings of the 15th century]. PMID- 3858693 TI - [Oral health. III. Oral health of 15-year-olds in Amersfoort]. PMID- 3858694 TI - [Reorganization studies. An effort to stimulate utilization of dental services]. PMID- 3858695 TI - [Room for implants in the atrophic mandible? An anatomic study]. PMID- 3858696 TI - [Evaluation of a new preliminary instruction program--a repeat study]. PMID- 3858697 TI - [A method for relining dental prostheses and the simultaneous correction of the bite]. PMID- 3858698 TI - [Oral hygiene in radiation patients. Evaluation of the effect of oral hygiene measures in the treatment of mucositis of the oral mucosa during radiation therapy]. PMID- 3858699 TI - [Composites: classification and qualities. Survey by Lutz and Phillips]. PMID- 3858700 TI - Urinary kallikrein in normal pregnancy, pregnancy with hypertension, and toxemia. AB - The 24-hour urinary excretion of kallikrein (K) and prostaglandin E2 (PGE2), which reflects their intrarenal synthesis, was measured in 7 normal women (NW), 10 women with essential hypertension (EH), 26 normal pregnant women (NP), 12 women with hypertension in pregnancy (HP), and 4 women with toxemia. All pregnant women were in the last trimester of their pregnancy (week 24-40). K was raised in NP (99.6 +/- 8.1 KU/24 h) and HP (106.5 +/- 8 KU/24 h) compared to NW (57 +/- 8.23 KU/24 h) (p less than 0.05). PGE2 excretion was decreased in EH (403.25 +/- 90.6 ng/24 h) compared to NW (508.6 +/- 80.26 ng/24 h). During pregnancy PGE2 was increased to 1,088 +/- 93.2 ng/24 h in NP and significantly more in HP, 1,885 +/- 40 ng/24 h (p less than 0.002). In this regard it differed from K. These data may suggest that, in addition to K, other factors (as angiotensin II and/or antidiuretic hormone) possibly activate renal PGE2 production in HP. In toxemia, K (23 +/- 6.1 KU/24 h) and PGE2 (583 +/- 172.83 ng/24 h) were markedly decreased. The above results suggest that the renal kallikrein-kinin and prostaglandin systems may play a role in sodium homeostasis during pregnancy. Their exact influence on the pathogenesis of hypertension in nonpregnant, pregnant, and toxemic subjects awaits further investigation. PMID- 3858701 TI - Ethanol-induced water diuresis is not prostaglandin dependent. AB - Previous studies have demonstrated an effect of alcohol on arachidonic acid metabolism. These studies were undertaken to determine if the water diuresis of alcohol is due to enhanced prostaglandin E2 (PGE2) production, a known antidiuretic hormone antagonist. 6 rabbits, weighing between 2.5 and 3.2 kg, were studied in standard metabolic cages during 4 periods: control, indomethacin administration, ethanol administration, and ethanol and indomethacin. 10 ml of 100% alcohol was added to their water in periods 3 and 4, and 5 mg/kg indomethacin was given during periods 2 and 4. We recorded urine output, urine osmolality, sodium excretion, potassium excretion, and PGE2 excretion. Urine flow rate significantly increased in periods 3 and 4 from 79 +/- 7 to 177 +/- 13 and 165 +/- 11 cm3/day, respectively, p less than 0.001 for both, compared to control. Indomethacin, therefore, did not prevent the water diuresis. Urinary PGE2 excretion was low (125 +/- 13 ng/day) with ethanol administration compared to control (897 +/- 71 ng/day, p less than 0.001). Levels were similar to those seen with the inhibitor indomethacin (105 +/- 22 ng/day, n.s.). These low levels with ethanol were observed at the same time of the significant free water diuresis. We conclude that the water diuresis produced by acute ethanol administration is not mediated by enhanced renal PGE2 production. PMID- 3858702 TI - Urinary prostaglandins E2 and F2 alpha in chronic renal failure. Influence of chronic and acute changes in Na balance. AB - The role played by renal prostaglandins E2 (PGE2) and F2 alpha (PGF 2 alpha) in the modification of sodium homeostasis in chronic renal failure (CFR) was studied. The 24-hour urinary excretion of PGE2 and PGF2 alpha was measured before and after 5 days of a diet containing less than 20 mmol/day of sodium in 6 patients with CRF. At the end of this period, an acute sodium load (77 mmol/h of NaCl for 4 h) was administered and prostaglandins measured in hourly urine collections. In contrast to the findings previously reported in normal subjects, PGE2 and PGF2 alpha decreased with the low-sodium diet. The ratio PGE2/PGF2 alpha (reflecting the activity of the enzyme PGE2-9-ketoreductase) was greatly increased and did not change with the low-sodium diet. The acute sodium load induced an increase in urinary prostaglandins. The results suggest that prostaglandins may contribute to natriuresis in CRF, under basal conditions, after a short-term sodium depletion and in response to an acute sodium load. The changes in prostaglandin excretion in CRF could be related to decreased activity of PGE2-9-ketoreductase. PMID- 3858704 TI - Early diagnosis of Tourette's syndrome. PMID- 3858703 TI - Antidepressants and endogenous opioid peptide systems. AB - The influence of antidepressants on the brain and pituitary content of immunoreactive beta-endorphin (ir-beta E) and dynorphin (ir-DYN) was studied in rats. Chronic administration of the first and second generation antidepressants imipramine, citalopram and rolipram, and of the antidepressant neuroleptics levomepromazine and chlorprothixene elevated the level of ir-beta E in the hypothalamus. Imipramine and levomepromazine also increased the level of ir-DYN in this tissue. Imipramine administered chronically potentiated stress-induced as well as morphine analgesia. The results obtained suggest that chronic antidepressants enhance the brain opioid system activity and increase the sensitivity of opiate receptors. PMID- 3858705 TI - [Hereditary blood anomalies in the Abruzzi population in Valle del Sangro: from hematologic genetics to the history of a population]. AB - A high incidence of hereditary blood anomalies (particularly Pelger-Huet's congenital granulocytic anomaly and Lepore haemoglobinopathy) is reported in the people of the Sangro Valley (Abruzzo, South Italy). The clinical, haematological, genetic and demographic implications of the high incidence of these pathologies are discussed. PMID- 3858706 TI - Regional distribution of a novel pituitary protein (7B2) in the rat spinal cord: effect of neonatal capsaicin treatment and thoracic cord transection. AB - Using a specific radioimmunoassay, a novel pituitary protein (7B2) was shown to be distributed throughout the rat spinal cord. The concentration of 7B2-like immunoreactivity (7B2-IR) was significantly higher in dorsal lumbar than in whole lumbar cord, and the highest level was found in the sacral region. On both gel and high-performance liquid chromatography, 7B2-IR in rat spinal cord eluted in the same position as 7B2-IR extracted from porcine pituitary gland. Neonatal capsaicin treatment did not change dorsal lumbar spinal cord 7B2-IR concentrations, suggesting that it is not predominantly present in unmyelinated primary afferent fibres. Thoracic cord transection, however, resulted in significant increases of 7B2-IR in lumbar and especially sacral regions, providing evidence of a 7B2-containing ascending pathway originating in the lumbosacral spinal cord. PMID- 3858707 TI - Defects of tooth enamel in children in fluoridated and non-fluoridated water areas of the Auckland region. PMID- 3858708 TI - Fermentation of glycerol by the flora of immature dental plaque, before and after rinsing with a mineralising solution containing urea and glycerol. PMID- 3858709 TI - The prevalence of dental caries in 8- and 9-year-old New Zealand children. PMID- 3858710 TI - Dental radiographic and restorative experience in a group of Dunedin adolescents, 1977-81. PMID- 3858711 TI - Vitallium removable overlays for deep overbite--case report. PMID- 3858712 TI - Dentistry and dental education to the year 2000. PMID- 3858713 TI - Diabetes mellitus and the dental patient. PMID- 3858714 TI - Cystic fibrosis in New Zealand: incidence and mortality. AB - The incidence of and mortality from cystic fibrosis in New Zealand from 1960 to 1983, has been reviewed. Cystic fibrosis subjects have been located from data obtained from New Zealand paediatricians, the Cystic Fibrosis Association and hospital admission records. Mortality figures in the years 1960-1982 were also obtained. The incidence of cystic fibrosis of 1: 3179 non-Maori births was similar to that reported previously. Those born during 1970-1983, have a significantly better survival than those born before 1970. The survival figures are similar to those in England and Wales, but are considerably lower than those reported from Canada, or cystic fibrosis centres in the United States and Australia. PMID- 3858715 TI - Patients with acute abdominal pain: white cell and neutrophil counts as predictors of the surgical acute abdomen. AB - Two hundred and fifty-two patients with acute abdominal pain were admitted to Wellington Hospital during three consecutive months in 1982. The prevalence of the surgical acute abdomen in these patients was 35%. There was no significant difference in performance between the peripheral blood white cell count (WCC) and neutrophil count (NC) when used as diagnostic tests of surgical acute abdomen. Neither test is sufficiently sensitive or specific to be a good predictor of surgical acute abdomen. It is recommended that the WCC be used sparingly and interpreted as a continuously distributed rather than dichotomous diagnostic test. There is no advantage in using the NC. PMID- 3858716 TI - Single-dose therapy for uncomplicated urinary tract infections. PMID- 3858717 TI - Eating attitudes in an adolescent schoolgirl population. AB - One thousand five hundred and fourteen Auckland school girls in the age range 13 to 17 were given an eating attitudes test. Fourteen percent of this large population produced a score on that test of greater than 30 which has been claimed to be indicative of potential eating disorder. We view this incidence with alarm and make commentary on the social process of coupling the thin feminine body ideal with success. PMID- 3858718 TI - Onset of azoospermia after vasectomy. AB - Nine hundred and sixteen men who had undergone bilateral vasectomy were followed up with semen analysis at monthly intervals. After an average of 10 ejaculations at least 35% of men still had non-motile sperms at the end of the first month. This persisted in four men even after 50 ejaculations or more. The reasons for, and the implication of the very slow clearance of spermatozoa after vasectomy are discussed. PMID- 3858719 TI - Chlamydia trachomatis infection at a family planning clinic. AB - Endocervical samples were taken for the detection of Chlamydia trachomatis from 500 consecutive patients attending a family planning clinic. The Microtrak direct specimen immunofluorescence test was used. Swabs from 79 patients (15.8%) were positive for chlamydia. Seventy-one (95%) of these patients were symptom free, and 39.8% were under 20 years old. Twenty-one patients were pregnant, seven (33%) had chlamydia. Those positive for chlamydia had twice the frequency of abnormal smears and other sexually transmitted infections as those who were negative. Contraceptive use was similar except that intrauterine devices were used less frequently by patients with chlamydia infection. This report indicates the frequent occurrence of Chlamydia trachomatis infection in New Zealand and that newly developed methods of diagnosis enable us to identify and treat those with this infection. Characteristically these patients are under 20, have multiple partners and a high incidence of abnormal smears and other sexually transmitted infections. PMID- 3858720 TI - Teamwork can improve the health of lead process workers. AB - A team working co-operatively to improve the health of lead workers has evolved over the last 10 years. We have monitored 704 employees for red cell lead (4800 samples) from a factory since 1974. In 1975, 32 employees, one-third of the workforce were suspended at a red cell lead level of greater than 10.7 mumol/l. Since 1980 no-one has been suspended at the current lower level of 7.7 mumol/l. By June 1984 the red cell lead mean for all process areas is less than 4.5 mumol/l (average 3.6 mumol/l). In 1984 the usual red cell lead range for local non-industrially exposed adult males is 1.23 SD 0.65 mumol/l. The value of cumulative reporting and contributory factors in reducing the blood levels are discussed. PMID- 3858722 TI - Abortion and medical discipline. PMID- 3858721 TI - Fungal allergy and respiratory disease. AB - An aerobiological study of three different localities of the Auckland region using Burkard volumetric spore traps was conducted for a 12 month period from September 1979 to August 1980. High counts were recorded of various types of fungal spores of both unknown and recognised potential allergens but the basidiospore group was dominant at all sites forming greater than 50% of the total air spora. Seasonal periodicities as well as regional variations in spore concentrations of five generic group viz Ganoderma, Leptosphaeria, Cladosporium, Alternaria and Aspergillus-Penicilium were recorded. These exhibited summer and/or autumn peaks. The diel periodicities recorded for Ganoderma and Leptosphaeria were of nocturnal type. Cladosporium was diurnal and Aspergillus Penicillium did not display any clear periodicity. The hospital admissions of acute asthma sufferers were recorded for the period January 1979 to December 1980. The seasonal pattern of airborne basidiospores of the region and the pattern of acute asthma admissions indicate a close relationship between the two. PMID- 3858723 TI - Cryptosporidium infestation in hospitalised urban children. PMID- 3858724 TI - Deafness in psychopaedic patients. PMID- 3858725 TI - Mianserin. PMID- 3858726 TI - Asthma and peak flow meters. PMID- 3858727 TI - Vitamin D status in healthy elderly subjects in Auckland. PMID- 3858728 TI - Pathology manpower. PMID- 3858730 TI - Asthma and viral infections. PMID- 3858729 TI - Surgery for snoring--what constitutes a cure? PMID- 3858731 TI - Alcohol consumption and blood pressure in a New Zealand community study. AB - The relationship between stated alcohol consumption and blood pressure was investigated in 901 adults who participated in a multiphasic health survey in Milton in May 1981. Subjects taking oral contraceptives or drugs which could lower blood pressure were excluded. Eighty-five percent of men and 52% of women reported taking some alcohol at least once a month. The percentage using alcohol was highest (96%) in men aged 20-29 years. The reported mean weekly intake by users was 171 g for men and 56 g for women. After adjustment for age and body mass index, there was a positive association between alcohol intake and blood pressure for men. The mean systolic and diastolic pressures of male heavy alcohol users (300 g or more alcohol per week) were, respectively, 9.8 and 8.9 mmHg higher than those of male non-drinkers. No relationship between alcohol intake and blood pressure was found in the women. PMID- 3858732 TI - Pregnancy complicated by non-insulin dependent diabetes mellitus and type V hyperlipoproteinaemia: case report. AB - Type V hyperlipoproteinaemia complicated a pregnancy in a 38 year old Samoan multigravida with previous noninsulin dependent diabetes. The hypertriglyceridaemia was associated with severe insulin resistance, nonacidotic ketosis and poor control of the diabetes. Continuous subcutaneous insulin infusion resulted in excellent diabetic control and plasma triglyceride levels fell to normal without specific dietary fat restriction. The pregnancy resulted in the live birth of a normal healthy infant at 38 weeks' gestation. PMID- 3858733 TI - Oncogenes cause cancer? PMID- 3858734 TI - Health insurance coverage amongst families with school aged children. AB - The level of private medical insurance coverage was studied in a sample of 1106 seven year old children and their families who were participants in the Christchurch Child Development Study. In the last seven years, there has been a rapid increase in the number of families who were covered by private medical insurance: in 1977 an estimated 18% of families had coverage and by 1984, this figure had risen to 43%. Levels of coverage were correlated with a large number of factors associated with family social background including single parenthood, low income, poor parental education, Polynesian ethnicity, depressed living standards, family size and parental age. However, multivariate analysis suggested that the primary determinants of insurance coverage were family earning power and family structure. The social implications of these findings are discussed. PMID- 3858735 TI - Symptoms frequency and medical implications of severe asthma in children. AB - The frequency of asthma symptoms, drug therapy and medical intervention have been studied in a group of 200 children with severe asthma attending an asthma clinic. There was wide use of all the common asthma preparations, usually in combination. An average of 6.4 general practitioner consultations per year per child occurred for asthma episodes. Antibiotics were prescribed regularly in 57% for asthma symptoms. Forty-six percent had attended breathing exercises and physiotherapy for an extended period. PMID- 3858736 TI - Retinopathy of prematurity: a statement by the committee on the fetus and newborn of the Paediatric Society of New Zealand. PMID- 3858737 TI - Effects of sexual congress. PMID- 3858738 TI - Hepatitis B infection in Kawerau children. PMID- 3858739 TI - Recurrent vaginal candidiasis. PMID- 3858740 TI - Selenium in New Zealand. PMID- 3858741 TI - Tuberculosis prevention. PMID- 3858742 TI - Abortion and medical discipline. PMID- 3858743 TI - Comparison of the antistaphylococcal activity of serum from healthy subjects taking flucloxacillin or augmentin. PMID- 3858744 TI - Acupuncture. PMID- 3858745 TI - In vitro studies with imipenem. PMID- 3858746 TI - A simple method for obtaining bone biopsy specimens for fluoride analysis and some preliminary results. PMID- 3858747 TI - Duoderm wafers: a report on product evaluation. PMID- 3858748 TI - The socialisation of a nurse. PMID- 3858749 TI - European and Maori approaches to holism and health. PMID- 3858750 TI - The performance of dental students in an era of decreasing number of applicants. PMID- 3858751 TI - Tooth numbering systems. PMID- 3858752 TI - The dental student recruitment problem. PMID- 3858753 TI - A less costly approach to registering continuing education. PMID- 3858754 TI - Electrosurgery and subgingival retraction in fixed prosthodontics. PMID- 3858755 TI - Fixed prosthodontics in the restoration of a collapsed dentition. A case report. PMID- 3858756 TI - Lip paresthesia. A case report. PMID- 3858758 TI - Simplifying diagnosis of TMJ/MPD pain dysfunction syndromes. PMID- 3858757 TI - If you can build a better mousetrap, build it! PMID- 3858759 TI - A radiologist's look at TMJ syndrome. PMID- 3858760 TI - Clarifying reimbursement for treatment of patients with traumatically induced craniomandibular disorders. PMID- 3858761 TI - Recovery of a tooth fragment from the lower lip. PMID- 3858762 TI - Sister chromatid exchange and cell kinetics of marrow cells in acute non lymphocytic leukemia. PMID- 3858763 TI - Combination chemotherapy for multiple myeloma with BCNU, cyclophosphamide, vincristine, melphalan, and prednisone (M-2 protocol). AB - 54 consecutively referred, previously untreated patients with stage II and III multiple myeloma have been treated with the M-2 protocol. 50% of patients had a performance status of less than 50%. 13% were stage II and 87% stage III. In 50 of 54 patients (90%), and objective response according to the Myeloma Task Force was achieved; 10% of the responses have been complete (9+, 15+, 17+, 18+ and 66+ months). Remissions now range from 1 to 86+ months. The actuarial median survival determined from the initiation of therapy will exceed 4 years. Toxicity was acceptable with mild myelosuppression. These results confirm the efficacy of the M-2 protocol in multiple myeloma with regards to response rate and survival. PMID- 3858764 TI - Etched porcelain labial veneers. PMID- 3858766 TI - Diagnosis and management of mandibular fractures. PMID- 3858765 TI - Alternative management of the tetracycline stained dentition: intentional endodontics and non-vital bleaching. PMID- 3858767 TI - Internal derangement of the temporomandibular joint: morphologic description with correlation to joint function. AB - Internal derangement of the temporomandibular joint has mainly been studied arthrographically from the standpoint of anterior disk displacement with or without reduction. Frequent clinical observations of disk deformation in joints with internal derangement implied the need for a systematic study of morphologic alterations associated with internal derangement. Therefore, morphology, internal derangement, and joint function were studied in 58 randomly selected autopsy specimens of the temporomandibular joint. The results showed that joints with superior disk position rarely demonstrated morphologic alterations. In joints with partially anterior disk position, disk deformation occurred somewhat more frequently (31%) and was consistently located in the part of the disk that was positioned anteriorly. Joints with completely anteriorly positioned disks showed disk deformation in 77% and irregularities of the articular surfaces in 65%. It appears that anterior disk position precedes disk deformation. Therefore, early causal treatment to correct symptomatic internal derangement appears indicated to decrease the possibility of development of disk deformation. Disk deformation was also closely associated with disturbed joint function and should therefore be an important consideration when one is planning treatment of internal derangement of the temporomandibular joint. PMID- 3858768 TI - Magnetic resonance imaging of the temporomandibular joint meniscus. AB - This report describes early experience with magnetic resonance imaging (MRI) of the temporomandibular joint meniscus in which surface coil technology was used. The results suggest remarkable imaging capabilities and speed with noninvasive methods. PMID- 3858769 TI - The presentation and complications of odontogenic septic shock. Report of a case. AB - Although most odontogenic infections spread locally to adjacent fascial spaces, usually contiguous with the offending odontogenic pathosis, occasionally such an infection can spread rapidly across the midline and appear on the opposite side of the face and neck. Debilitated chronic alcohol abusers who are nutritionally deficient are more likely to develop serious life-threatening infections, either through serious airway involvement as seen in Ludwig's angina or manifest as a gram-negative septicemia with life-threatening shock and even cardiac arrest, than the usual dental patient with cellulitis. Early recognition through a high index of suspicion and vigorous monitoring will pick up the initial manifestation of toxic shock, as noted in this case report. PMID- 3858770 TI - Management of a large lingual thyroid in the orthognathic surgery patient. AB - The embryogenesis, signs and symptoms, diagnosis, and clinical management of the lingual thyroid entity are discussed. A patient with a large lingual thyroid, who also required a mandibular set-back osteotomy, is presented. The preoperative, intraoperative, and postoperative considerations and management of this patient as they relate to the lingual mass and its possible effects on the airway are discussed. PMID- 3858771 TI - Imaging of the TMJ, clinical application. PMID- 3858772 TI - New recommendation for prevention of bacterial endocarditis. PMID- 3858773 TI - Clinical efficacy of prednisone in the treatment of patients with oral inflammatory ulcerative diseases: a study of fifty-five patients. AB - An objective evaluation of 55 patients with chronic vesiculoerosive oral diseases was made to compare the beneficial and adverse effects of prednisone treatment. Patients were divided into groups of high, intermediate, and low drug dosages, as well as short and long periods of administration. Prednisone benefited 49 patients in spite of the fact that 55% had some adverse side effects. The duration of prednisone administration appeared to have a larger impact on side effects than the daily amount given. The most common side effects were gastrointestinal disturbances, mood alterations, polyuria and insomnia. There were no significant changes in blood pressure, blood sugar level, weight, or white blood cell counts. This study confirmed that systemic prednisone is a useful and beneficial treatment modality for patients with chronic oral inflammatory diseases. PMID- 3858774 TI - Possible role of apoptotic cells of the oral epithelium in the pathogenesis of aphthous ulceration. AB - Electron microscopic examination of the normal oral mucosa of patients with recurrent aphthous ulceration or Behcet's syndrome revealed that the degenerate dark prickle cells are apoptotic cells. Such dark prickle cells showed characteristic findings of apoptosis, such as the shrinkage of nucleus and cytoplasm and the formation of contraction vacuoles. The number of intraepithelial mononuclear cells phagocytosing apoptotic cellular debris increased remarkably at the preulcerative stage of the aphthous lesions. The apoptotic debris also attracted neutrophilic leukocytes in the prickle cell layer at the preulcerative stage but not in the normal oral epithelium. It is speculated that the onset of aphthous ulceration is closely related to phagocytosis of these apoptotic cells by intraepithelial mononuclear cells. PMID- 3858775 TI - Focal acantholytic dyskeratosis and epidermolytic hyperkeratosis of the oral mucosa adjacent to squamous cell carcinoma. AB - A 74-year-old woman presented with an ulcerating squamous cell carcinoma of the posterior mandibular gingiva. Biopsy of the mucosa directly anterior to the tumor revealed areas of both focal acantholytic dyskeratosis (FAD) and epidermolytic hyperkeratosis (EH). Rare solitary lesions of FAD have been described in the oral mucosa; this is the first report of FAD as an incidental finding. EH has only recently been reported in the mouth, and the concept is unknown in the oral pathology literature. Both FAD and EH may represent nonspecific reaction patterns of skin and oral mucosa to numerous stimuli, including carcinogens or adjacent neoplasms. PMID- 3858776 TI - Fibrous dysplasia of bone and concomitant dysplastic changes in the dentin. AB - Fibrous dysplasia of bone and dentinal dysplasia have not been classified as related conditions. However, the present report describes a patient with both polyostotic fibrous dysplasia and dysplastic changes in the dentin. One bone lesion was first discovered on the right side of the mandible on a routine roentgenogram. There was an atypical radiolucency apical to a short-rooted molar with an obliterated pulp. Additional lesions were found on the left side of the mandible in the maxilla, in the frontal and occipital bones, in the ilium, in the proximal ulnae, and in the ribs. All lesions demonstrated an increased uptake of Tc99. A biopsy specimen of bone from the right side of the mandible showed small calcified islands in a cell-rich connective tissue. Microscopic analysis of the right first molar showed irregularly shaped dentin with the dentinal tubules arranged in a whorl-like fashion surrounding an almost completely obliterated pulp chamber and canal. Healing after tooth extraction and after the bone biopsy was unremarkable. After 6 months the alveolus was reorganized and the bone patterns appeared normal, although the radiolucent areas inferior to the teeth remained unchanged. The concomitant occurrence of dysplastic changes in bone and teeth may be a sign of a generalized defect in the mesenchymal hard-tissue forming cells. PMID- 3858777 TI - Radiation-induced lesion of the oral cavity: thorium depositions detected by x ray microanalysis. PMID- 3858778 TI - The effect of radiation on the response of dental pulp to operative and endodontic procedures: an experimental study. AB - Thirty-six 56-day-old male Sprague-Dawley albino rats served as two groups of experimental animals. Group 1 was irradiated with 400 rads delivered as total body radiation from a cesium source. Group 2 served as the control group and was not irradiated. Three weeks later, the dental microscope was used to facilitate various dental procedures in both groups of animals (cavity preparation filled with zinc oxide-eugenol, pulp exposure capped with zinc oxide-eugenol, and pulp exposure left open). Two animals for each procedure from Groups 1 and 2 were killed at time intervals of 2, 4, and 8 weeks. The results showed that (1) radiation at this dose resulted in a depression of the normal response of the dental pulp to the trauma and infection induced by pulpal exposure, (2) there were no pathologic changes in the untreated molars of the irradiated animals, and (3) the use of the dental microscope greatly facilitated cavity preparation in the molars of rats. PMID- 3858779 TI - Mycotic infection in necrotic pulp tissue: a histologic report. AB - Histologic examination of a necrotic pulp from a traumatized tooth revealed mycotic organisms which could be identified morphologically. Actinomyces has been identified as part of the normal oral flora but has not been identified in necrotic pulp tissue histologically. The present case report is of interest because it showed the ability of autolytic pulp tissue to support mycotic growth. The tooth also gave a positive response to pulp-testing procedures, even though no new tissue could be demonstrated histologically. PMID- 3858780 TI - Straight-line endodontic access to anterior teeth. AB - Straight-line access provides an unimpeded pathway for endodontic procedures. One hundred ninety-eight anterior teeth were examined to determine the location of the access preparation which would allow straight-line access for intracanal procedures. A radiographic analysis of these teeth indicated that a more labial orientation of the access opening would provide straight-line access to the canal more consistently than the "traditional" lingual access opening. The more labial placement of the access opening on maxillary or mandibular anterior teeth which will require full coverage will make endodontic treatment more efficient and may, therefore, increase endodontic success rates in these teeth. PMID- 3858781 TI - The incidence of unerupted permanent teeth and related clinical cases. AB - The impacted or mal-erupted tooth and its associated pathosis provide great diagnostic challenges to the dentist. The frequency of occurrence of impaction was found to be over 10,000 in 5,000 Army recruits. The type and position of impaction are summarized in tables. The incidence of impactions was higher than previously reported and may reflect some sampling bias. The incidence of impacted second and fourth molars is higher than expected. Impactions or mal-eruptions were seen to involve every permanent tooth except the mandibular incisors and first molars. Impactions can occur because of malpositioning of the tooth bud or obstruction in the path of eruption. However, the exact mechanism is still unknown. Six unusual cases of impacted permanent teeth are described to illustrate the importance of panoramic radiographs in the discovery of some anomalously located impactions. PMID- 3858782 TI - Foreign body in a tooth. PMID- 3858783 TI - Gemination of a mandibular third molar. PMID- 3858784 TI - Pyramidal molars. PMID- 3858785 TI - Results up to death in the treatment of persistent cervico-thoracic (Pancoast) and thoracic malignant pain by unilateral percutaneous cervical cordotomy. AB - The authors analyse the results up to death in 103 followed-up patients undergoing unilateral percutaneous cervical cordotomy for persistent cervico thoracic malignant pain (45 cases of Pancoast syndrome and 58 cases of thoracic pain associated with lung cancer or metastases). On the basis of epidemiological data, relationships emerge between onset of pain, stage of cancer, patient survival and lasting efficacy of pain relief. Twenty (44%) of 45 patients with Pancoast syndrome were pain-free up to death as a result of cordotomy alone, while only 13/58 patients (22%) with thoracic pain were pain-free as a result of cordotomy alone owing to the very high incidence of mirror pain in this group of patients (42/58 patients, 72%) compared to those with Pancoast syndrome (14/45 patients, 31%). The type and intensity of mirror pain, however, were of such a nature in both groups as to be amenable to control with analgesic drugs. In both groups of patients, there was a low incidence of the causes of post-cordotomy pain recurrence contralateral to the lesion, i.e., deafferentation pain, fading of analgesia, and pain above the levels up to which deep pin-prick analgesia had been obtained. Cordotomy alone or, as necessary, in conjunction with analgesic drugs afforded complete pain control in 34/45 patients (75%) with Pancoast syndrome and in 50/58 patients (86%) with thoracic pain. These data provide evidence of the unique usefulness of the procedure in controlling otherwise intractable persistent cervicothoracic malignant pain, when the technique is correctly performed. PMID- 3858786 TI - Prognostic significance of primary bone changes in children with acute lymphoblastic leukemia. AB - In a period of 6.5 years, acute leukaemia was diagnosed in 140 children at our hospital: 137 children had long bone radiographs and 45 patients had bone lesions. Eleven of the 115 patients who had skull radiographs had osteolytic lesions and another four had wide sutures. No patients had bone changes at relapse or at cessation of 3 years' successful therapy. In acute lymphoblastic leukemia, the frequency of osseous lesions tended to be higher in patients in sub groups with a more favourable prognosis. The duration of remission and survival times were higher in patients with "leukemic" long bones than in those without them (p less than 0.10 and less than 0.05, respectively). Changes in the skull could not be related to the outcome. We found no abnormalities in the bones of the eight patients with acute non-lymphoblastic leukemia. PMID- 3858787 TI - Absence of prognostic significance of skeletal involvement in acute lymphocytic leukemia and non-Hodgkin lymphoma in children. AB - Over a period of 6 years 88 children with acute lymphocytic leukemia and malignant non-Hodgkin lymphoma were treated according to the West-Berlin protocol. In 72 children skeletal surveys were performed initially and these showed leukemic bone changes in 31 patients. Follow-up was obtained in 70 patients for up to 8 years after diagnosis: 20 of these patients died and of these 8 showed initial skeletal involvement. In 17 children relapses occurred and 10 of them had bone lesions at first presentation. There was no significant correlation between the extent of the skeletal involvement and the survival time as calculated by life table analysis. PMID- 3858788 TI - The serum apolipoprotein profile of patients with glucose-6-phosphatase deficiency. AB - Abnormal lipid transport is one of the more severe pathophysiological manifestations of glucose-6-phosphatase deficiency (glycogen storage disease, type I: GSD-I). To characterize further lipoprotein abnormalities in this inborn error of glycogen metabolism, we determined the levels of serum apolipoproteins (Apo) A-I, A-II, B, C-I, C-II, C-III, D, and E in 10 male and 12 female patients, 1-37 yr of age. Results showed that patients with GSD-I have a unique apolipoprotein profile characterized by normal or slightly decreased levels of ApoA-I and ApoA-II, reduced concentrations of ApoD, and significantly increased levels of ApoC-I and ApoC-II (p less than 0.01) and ApoB, ApoC-III, and ApoE (p less than 0.0001) in comparison with age- and sex-matched normolipidemic controls. However, there was some overlap of values in patients and controls for each of the lipid and apolipoprotein constituents with the exception of ApoC-III. This finding supported by the results of the logistic regression analysis showed that the concentration of ApoC-III is the best criterion for distinguishing patients with GSD-I from control subjects and the most characteristic feature of the deranged lipid transport system in this deficiency disease. It remains to be clarified, however, whether the ApoC-III concentrations in patients with GSD-I reflect the degree of other metabolic and clinical manifestations of this disease such as hyperlacticacidemia, hyperuricemia, and growth retardation. PMID- 3858789 TI - Anaphylaxis to L-asparaginase during treatment for acute lymphoblastic leukemia in children--evidence of a complement-mediated mechanism. AB - L-Asparaginase (l-Asp) is widely used as an effective drug against childhood and adult acute lymphoblastic leukemia (ALL). However, it is immunogenic in humans and may lead to hypersensitivity reactions. The immunological basis of these reactions is not clear. Since the presence of l-Asp specific IgG-antibodies seems to correlate better with clinical reactions than IgE-antibodies and IgG antibodies are known to be able to fix and activate the complement system, we speculated that the mechanism of anaphylaxis may be complement- rather than IgE mediated. We analyzed 24 children with ALL (age 2-15 yr) for changes in the complement system during l-Asp infusions. Chemotherapy was administered according to the CoALL 82 protocol which is derived from the CoALL 80 protocol recently published. The formation of specific antibodies of IgM and IgG classes against l Asp was monitored by a solid phase ELISA. The immunological responsiveness of individual patients varied over a wide range but both types of antibodies were induced. Anaphylactic reactions were observed on eight occasions in eight children. The infusions in the remaining 16 patients were tolerated without clinical reactions. Significant activation of complement was demonstrated in seven of eight reaction occasions and in none of the occasions without reactions. The most important complement activation parameter monitored was the C3 split product C3d measured in EDTA-plasma. We conclude that anaphylaxis to l-Asp in patients with ALL can be explained in most instances on the basis of complement activation induced by the formation of immune complexes of l-Asp and specific antibodies of IgM and IgG classes. PMID- 3858791 TI - Priorities and investigative functions for nursing research. PMID- 3858790 TI - American Academy of Pediatrics. Council on Research. Proposed guidelines on genetic engineering. PMID- 3858792 TI - Elder abuse identified as nursing challenge. PMID- 3858793 TI - Nursing in action, the future is now. President's address. PMID- 3858794 TI - [Improving prognosis in childhood leukemia]. PMID- 3858796 TI - The cytoprotective effect of prostaglandin E2 on taurocholate-induced erosions in gastric mucosa of the rat. Light microscopic, morphometric and scanning electron microscopic investigations. AB - The morphological changes associated with the cytoprotective effect of prostaglandin E2 (PGE2) following sodium-taurocholate (NaTC) erosive injury in the gastric mucosa were investigated in male rats. A single topic application of NaTC (80 mMol) induced multiple gastric erosions in all animals. Application of 200 micrograms PGE2/kg body weight prior to NaTC treatment led to a significant 90% decrease in the lesion-score in PGE2-protected animals. Light microscopic morphometric studies of the mucus-producing cells in the fundus mucosa were carried out. Within the PGE2-protected animals a significant increase was observed in the length of zones of the mucus-producing cells at the surface and in the foveolae (both PAS-positive and alcian-blue-positive cells). Compared to the NaTC-injured animals, this increase amounted to 8.1% for the PAS-positive, and 6.1% for the alcian-blue-positive zone. Compared to the untreated controls, these values were 4.7% and 3.2% respectively. In the scanning electron microscope we observed a characteristic explosive release of mucus and damage of the cell's surface membranes in the NaTC-treated animals. The PGE2-protected rats showed a predominance of exocytosis of mucus vesicles which formed a characteristic mucus network at the surface membrane. Our investigations suggest that the cytoprotective effect of PGE2 may, in part, be due to an increase in mucus production and to a modification of mucus adherence at the cell membrane. PMID- 3858795 TI - Single stranded DNA SP6 promoter plasmids for engineering mutant RNAs and proteins: synthesis of a 'stretched' preproparathyroid hormone. AB - The intergenic region of bacteriophage f1 has been subcloned into the bacteriophage SP6 promoter plasmids, pSP64 and pSP65, in both orientations. Coinfection of E. coli with these SP6 promoter/phage f1 chimeric plasmids and the interference resistance phage, IR1, results in the replication and secretion of the pSP6.f1 plasmids as single stranded DNA. Bovine preProPTH cDNAs in both the native form and a form containing an insertion of 117 base pairs in the protein coding region have been inserted in these plasmids. The RNA transcribed from the SP6.f1/preProPTH cDNA constructs was efficiently translated in the wheat germ or reticulocyte cell free systems without addition of a 7-methylguanosine cap to the RNA. In the presence of dog pancreatic or chicken oviduct microsomal membranes, conversion of the resultant pre-proteins to pro-proteins was observed. Confirmation of the "mutated" preProPTH cDNA was determined by dideoxyribonucleotide DNA sequencing of single stranded plasmid DNA. These vectors are suitable for the efficient biosynthesis of large amounts of single or double stranded DNA, and translationally active RNA. The combined properties of single stranded DNA replication and the SP6 promoter simplify the engineering of mutant RNAs and their corresponding proteins. In addition, single stranded DNA or RNA corresponding to either complementary strand may be synthesized as nucleic acid hybridization probes. PMID- 3858798 TI - Dyskinesia. Research and treatment. PMID- 3858797 TI - Management of cancer in the elderly. Implications of the aging process. AB - Cancer is one of the most serious illnesses of the elderly. Screening programs focusing on its early detection in this age-group are needed to allow maximum opportunity for cure. Also important is convincing the older patients who smoke that stopping is still worthwhile. Compared with younger patients, the elderly have more intercurrent medical illnesses and are more likely to suffer from financial difficulties and loss of family support. These factors must be considered when managing these patients. Although age-imposed compromises in treatment are often made, available data suggest that a priori dose reduction of chemotherapy on the basis of age alone is not indicated in patients with solid tumors. Prospective clinical trials are needed to further address the issue of responsiveness to chemotherapy as a function of age. Such trials should include assessment of physiologic age and quality of life. PMID- 3858799 TI - Pathophysiology of tardive dyskinesia. AB - Animal models of persisting tardive dyskinesia have been developed in two species (rats and monkeys). Dyskinetic animals chronically treated with neuroleptics had significant decreases in glutamic acid decarboxylase and GABA in the substantia nigra, the medial globus pallidus, and the subthalamic nucleus, whereas animals without dyskinesias which had been treated similarly had a normal distribution of these biochemical parameters. These changes remained 2 months after neuroleptics were discontinued, and at that point there was a reduced turnover of striatal dopamine in the dyskinetic monkeys. These findings suggest that reduced GABA function in the substantia nigra may play a role in tardive dyskinesia. PMID- 3858800 TI - Intermittent treatment with droperidol, a short-acting neuroleptic, increases behavioral dopamine receptor sensitivity. AB - Drug holidays have been proposed as a preventive strategy against the development of tardive dyskinesia. Three animal studies in which dopamine receptor hypersensitivity after chronic neuroleptic treatment was used as a model for tardive dyskinesia failed to find any reduction in dopamine receptor hypersensitivity with intermittent, as opposed to continuous, treatment. Since most neuroleptics have a long half-life in vivo, we hypothesized that truly drug free periods may not have been achieved in previous studies. Droperidol, an ultrashort-acting butyrophenone neuroleptic, was administered to rats for 22 days in twice-daily injections or one injection every 48 hours. At 60 hours after the last dose there was no difference in apomorphine-induced stereotypy between continuously treated and intermittently treated animals. Thus, even totally drug free periods do not reduce the development of dopamine receptor hypersensitivity. PMID- 3858801 TI - Behavioral effects of long-term neuroleptic treatment in Cebus monkeys. AB - Tardive dyskinesia (TD) occurs in predisposed individuals receiving neuroleptic treatment, but prior to the onset of symptoms it is not possible to predict who is at risk for this disorder. If the time course for evolving symptoms, perhaps mediated through dopamine hypersensitivity, could be identified, treatment interventions could be initiated. Eight male Cebus monkeys (15-18 years old) were tested with the dopamine agonists apomorphine, d-amphetamine, bromocriptine, and pergolide before, during, and after 3 months of treatment with haloperidol 0.25 mg/kg daily PO. This treatment cycle was repeated four times. Apomorphine and amphetamine produced moderate buccolinguo-masticatory (BLM) signs. Bromocriptine and pergolide produced very few BLMs. Initially haloperidol suppressed dopamine agonist-induced BLMs, but tolerance to the effect developed and was replaced by a potentiation of apomorphine-induced BLMs. Markedly increased apomorphine- and amphetamine-induced BLMs were seen following the first 3 months of haloperidol medication (behavioral hypersensitivity), but this gradually decreased to near baseline levels, even with re-exposure to neuroleptics in the four treatment cycles. Bromocriptine and pergolide produced no signs of BLM behavioral hypersensitivity. These findings suggest that long-term neuroleptic treatment in nonhuman primates induces dynamic compensatory CNS changes, which may not fully explain the pathogenesis of TD on the basis of dopamine hypersensitivity. PMID- 3858802 TI - Pharmacological properties of presynaptic dopamine receptor agonists. AB - Selective presynaptic dopamine receptor agonists appear to offer promise as putative antipsychotic agents with a low risk of extrapyramidal side-effects, including tardive dyskinesia. However, no such agent with a reasonable degree of selectivity has yet reached the stage of clinical trial. In the present paper the particular pharmacological profile of presynaptic dopamine receptor (autoreceptor) agonists is described, and underlying mechanisms are discussed. Special attention is paid to the compound 3-(3-hydroxyphenyl-N-n propylpiperidine(3-PPP), especially its levotatory enantiomer. This agent shows affinity for both pre- and postsynaptic dopamine receptors. Its intrinsic activity in different locations varies between virtually zero and 100%, leading to a mixture of agonist and antagonist properties. It is suggested that this variability depends on the adaptive properties of the dopamine receptor. PMID- 3858803 TI - A glycolipid antigen specific to Mycobacterium paratuberculosis: structure and antigenicity. AB - Mycobacterium paratuberculosis (National Animal Disease Center strain 18 and American Type Culture Collection strain 19698), the causative agent of Johne Disease (bovine paratuberculosis), contains a major immunoreactive glycopeptidolipid (polar GPL-I) that has been isolated and characterized. (formula; see text) Thus, the glycolipid antigen belongs to the polar mycoside C glycopeptidolipid family present in other mycobacterial species. The distal 2,3 di-O-methyl-alpha-L-fucopyranosyl-(1----3)-alpha-L-rhamnopyranosi de unit, the obvious antigen determinant, appears to be characteristic of M. paratuberculosis. The glycolipid can be recognized readily in isolates of M. paratuberculosis by TLC and its presence may be used as a characteristic marker of the infectious agent. The polar glycopeptidolipid was highly reactive in ELISA against serum from an animal hyperimmunized with M. paratuberculosis strain 18, indicating its basic immunogenicity. PMID- 3858804 TI - Simultaneous comparison of three protein sequences. AB - Currently there are several computer algorithms available for aligning two biological sequences. When more than two sequences are to be aligned, however, pairwise comparisons using these methods rarely lead to a consistent alignment of the sequences. One obvious solution to this problem is to compare all the sequences simultaneously. Here we present an algorithm for the simultaneous comparison of three biological sequences. The algorithm is an extension of the method developed by S. B. Needleman and C. D. Wunsch, but it decreases the almost prohibitively long computing time required by a direct naive extension to a practical level: it takes time proportional to the cube of the mean sequence length, in comparison to the fifth power time taken by the direct extension. Simultaneous comparison not only gives a consistent alignment of the three sequences, but it could also reveal homologous residues in the sequences that might be overlooked by the pairwise comparisons. As an example of the application of the algorithm, three copper-containing proteins, plastocyanin, stellacyanin, and cucumber basic blue protein, are compared. PMID- 3858805 TI - Electrostatic influence on energetics of electron transfer reactions. AB - Electron transfer chains in biological systems must operate efficiently to satisfy metabolic energetic requirements. The component proteins in these chains are expected to exhibit characteristic structural features that facilitate electron transfer to the appropriate donor and acceptor proteins. A survey of soluble one-electron carrier proteins indicates a significant tendency for lower potential proteins to be more negatively charged than higher potential proteins. Consideration of the electrostatic consequences of this pattern of charge asymmetry suggests that the reduction potential difference between the two proteins will be minimized in the precursor complex associated with electron transfer. An equivalent statement is that the change in free energy accompanying electron transfer in the complex will approach zero. This behavior is consistent with theoretical arguments advanced by Albery and Knowles [Albery, W. J. & Knowles, J. R. (1976) Biochemistry 15, 5631-5640], which suggest that for the most efficient enzymes, the free energy difference between enzyme-bound species should approach zero. A more general derivation of this prediction is provided. The observed charge asymmetry in electron transfer proteins provides a structural mechanism for satisfying this requirement, thus accelerating the overall rate of electron transfer. PMID- 3858806 TI - Phosphorylation of hydroxylysine residues in collagen synthesized by cultured aortic smooth muscle cells. AB - O5-Phosphohydroxylysine was chemically synthesized and techniques were established for its identification by combined use of cation-exchange chromatography, thin-layer electrophoresis at pH 1.9 and 3.5, and thin-layer chromatography. Clean separation of phosphohydroxylysine from the other phospho amino acids, phosphoethanolamine, and phosphocholine was achieved. Conditions were also determined to permit hydrolysis of proteins in 2 M HCl without loss of the phosphono group of phosphohydroxylysine residues. Experiments were then performed showing that 32P was incorporated into the hydroxylysine residues of cell-associated collagens when cultured calf aorta medial smooth muscle cells were incubated with [32P]orthophosphate. In other experiments, the cells incorporated [3H]lysine into hydroxylysine residues of cell-associated collagen and then 32P into phosphohydroxylysine residues. The doubly labeled phosphohydroxylysine subsequently isolated showed nearly 1:1 stoichiometry with respect to incorporation of precursor lysine and phosphorus. Finally, in preliminary experiments done with a cell-free extract of the smooth muscle cells, 32P was transferred from [gamma-32P]ATP to hydroxylysine residues in several kinds of collagenous substrates. Thus, this work shows that smooth muscle cells have the capacity to phosphorylate hydroxylysine residues in their cell associated collagens and provides preliminary evidence that a protein kinase is involved. PMID- 3858807 TI - Developmentally regulated expression of a chicken muscle-specific gene in stably transfected rat myogenic cells. AB - To test the evolutionary conservation of DNA sequences specifying the developmentally regulated expression of the skeletal muscle actin gene, a recombinant plasmid containing the chicken skeletal muscle actin gene was introduced into rat myogenic cells. In a significant number of isolated clones, the accumulation of chicken actin mRNA increased greatly during differentiation. To test the expression in myogenic cells of a gene that is normally expressed during terminal differentiation of another tissue, rat myogenic cells were transfected with a mouse/human beta-globin chimeric gene. A decrease by a factor of 2-3 in the amount of globin mRNA during differentiation was observed in most clones in which the gene was expressed. The results indicate the conservation of the muscle-specific regulatory DNA sequences for more than 300 Myr. PMID- 3858808 TI - Nucleotide sequence of the satellite of peanut stunt virus reveals structural homologies with viroids and certain nuclear and mitochondrial introns. AB - Peanut stunt virus-associated RNA 5 (PARNA 5), the satellite of a plant cucumovirus, is a linear RNA of 393 nucleotides with a 5' cap and a 3' hydroxyl group. Determination of its nucleotide sequence has revealed two consecutive open reading frames that together extend most of its length. Sequences at the 5' and 3' ends are homologous with those of the satellite of the related cucumber mosaic virus, and the double-stranded forms of both satellites contain an unpaired guanosine at the 3' end of the minus strand. However, little other homology exists between the two satellites. In contrast, PARNA 5 has several regions of 90% sequence homology with various plant viroids, including sequences of the conserved central region of most viroids. Such homologies suggest a common origin with viroids coupled with specific adaptation as a linear RNA. The presence within PARNA 5 of conserved intron sequences essential to proper RNA processing suggests a possible origin from plant introns and/or involvement of such sequences in the processing of PARNA 5 multimers to monomers at some stage of replication. PMID- 3858809 TI - A dimer of AraC protein contacts three adjacent major groove regions of the araI DNA site. AB - Contact sites of AraC protein to the regulatory site araI of the Escherichia coli araBAD operon have been determined by the chemical-interference technique. DNA fragments were chemically modified an average of once per molecule, and fragments that no longer bound AraC were separated by gel electrophoresis from the DNA fragments still able to bind the protein. The contact sites were then determined by comparing the positions of modifications in the two DNA samples. Strong contacts were found with guanines in three consecutive major groove regions and the adjacent phosphates along one side of the DNA. The conserved bases of the AraC-binding DNA consensus sequence are also found in the same positions. The gel electrophoresis assay was used to determine the stoichiometry of binding, and AraC protein was found to bind the araI and araO1 regulatory sites as a dimer. Therefore, AraC appears to bind DNA differently from the other well-characterized regulatory proteins such as phage lambda repressor. PMID- 3858810 TI - Structure of human ferritin light subunit messenger RNA: comparison with heavy subunit message and functional implications. AB - Ferritin has a protein shell of 5 X 10(6) Da consisting of 24 subunits of two types, a heavier (H) chain of 21,000 Da and a lighter (L) chain of 19,000 Da. A cDNA clone of the messenger for the L subunit has been isolated from a human monocyte-like leukemia cell line. The clone contains an open reading frame of 522 nucleotides coding for an amino acid sequence matching 97% of the published sequence of human liver ferritin L subunit determined by sequenator, but it corresponds to only 55% of the reported amino acid sequence of a human liver H subunit clone. Nevertheless, computer analysis of the subunit conformations predicted from the open reading frames of the L and H clones shows that most of the amino acid differences are conservative and would allow both subunits to form the five alpha-helices and beta-turns established by x-ray crystallography for horse spleen ferritin subunits. This suggests that L and H subunits are structurally interchangeable in forming an apoferritin shell. The 5' untranslated region of our human ferritin L clone has considerable homology with that of the rat liver ferritin L clone in the region immediately upstream from the initiator codon, notably showing an identical sequence of 10 nucleotides at the same position in both subunit clones that may participate in regulating the known activation of ferritin mRNA after iron administration. Extensive homology, including several blocks of nucleotides, was identified between the 3' untranslated regions of the human and rat L clones. The common structural features of the H and L subunits lead us to conclude that they have diverged from a single ancestral gene. PMID- 3858811 TI - Respiratory burst oxidase from human neutrophils: purification and some properties. AB - The respiratory burst oxidase of human neutrophils was purified by "dye-affinity" chromatography over a red agarose column. Electrophoresis of the purified enzyme on NaDodSO4 gel showed a single major band at 64,000-66,000 daltons, together with some minor contaminants. On a nondenaturing gel, the enzyme ran as two closely spaced bands, the faster of which contained flavin. When these two bands were rerun separately on a NaDodSO4 gel, they gave identical patterns, each showing a major band at ca. 65,000 daltons. The specific activity (mean +/- SEM) of the purified enzyme was 8.8 +/- 3.5 mumol of O-2 per min/mg of protein. PMID- 3858812 TI - Organization of the human transferrin gene: direct evidence that it originated by gene duplication. AB - We present the characterization of two overlapping human transferrin genomic clones isolated from a liver DNA library. The two clones represent a total length of 24 kilobase pairs and code for 70% of the protein. The organization of this gene region was elucidated by restriction mapping and DNA sequencing. It contains 12 exons, ranging from 33 to 181 base pairs, separated by introns of 0.7-4.9 kilobase pairs. This gene can be divided into two unequal parts corresponding to the known domains of the protein. Each part is essentially composed of an equal number of exons; introns interrupt the coding sequences, creating homologous exons of similar size in each moiety. Moreover, the pattern of intron interruption of the codon sequence is identical for all the analyzed homologous exon pairs. Comparison with the organization of the ovotransferrin gene shows an identical exon size distribution. These data confirm, at the gene level, the hypothesis that transferrins originated by a gene-duplication event. A model accounting for the origin of the human transferrin gene is presented. PMID- 3858813 TI - Cloning and sequence analysis of cDNA for the luminescent protein aequorin. AB - The luminescent jellyfish Aequorea contains a photoprotein, aequorin, which emits light by an intramolecular reaction in the presence of a trace amount of Ca2+. A cDNA library of Aequorea was constructed and clones carrying the cDNA for the Ca2+-dependent photoprotein were isolated by the method of colony hybridization using synthetic oligonucleotide probes. The primary structure of the protein deduced from the nucleotide sequence showed that the protein is composed of 189 amino acid residues and has three E-F hand structures that are characteristic for Ca2+-binding sites. The sequence also suggested that the protein has hydrophobic regions at which the protein may interact with its functional chromophore, coelenterazine. PMID- 3858814 TI - Identification of the calmodulin-binding domain of skeletal muscle myosin light chain kinase. AB - In the course of determining the primary structure of rabbit skeletal muscle myosin light chain kinase (MLCK; ATP:protein phosphotransferase, EC 2.7.1.37) a peptide fragment was obtained that appears to represent the calmodulin-binding domain of this enzyme. Low concentrations of the peptide inhibited calmodulin activation of MLCK (Ki congruent to 1 nM). The peptide was not associated with a catalytically active, calmodulin-independent form of MLCK that was obtained by limited proteolysis. The peptide is 27 residues in length and represents the carboxyl terminus of MLCK. The sequence of the peptide shows no significant homology with any known protein sequence. The peptide contains one tryptophanyl residue and a high percentage of basic and hydrophobic residues, but no acidic or prolyl residues. Much of the sequence has a high probability of forming alpha helix. A chemically synthesized peptide has been prepared to study the interactions of the peptide and calmodulin in more detail. The intrinsic tryptophan fluorescence of the synthetic peptide shows a significant enhancement (approximately equal to 45%) in the presence of Ca2+ and calmodulin; fluorescence enhancement is maximal at a peptide:calmodulin stoichiometry of 1:1. Calmodulin Sepharose affinity chromatography in the presence of 2 M urea indicates that the interaction of peptide and calmodulin is Ca2+-dependent. The results of these studies indicate that the catalytic and calmodulin-binding domains of MLCK represent distinct and separable regions of the protein. In addition, the results provide a basis for future studies of the molecular and evolutionary details of calmodulin-dependent enzyme regulation. PMID- 3858815 TI - Enzyme-catalyzed processes in organic solvents. AB - Three different lipases (porcine pancreatic, yeast, and mold) can vigorously act as catalysts in a number of nearly anhydrous organic solvents. Various transesterification reactions catalyzed by porcine pancreatic lipase in hexane obey Michaelis-Menten kinetics. The dependence of the catalytic activity of the enzyme in organic media on the pH of the aqueous solution from which it was recovered is bell-shaped, with the maximum coinciding with the pH optimum of the enzymatic activity in water. The catalytic power exhibited by the lipases in organic solvents is comparable to that displayed in water. In addition to transesterification, lipases can catalyze several other processes in organic media including esterification, aminolysis, acyl exchange, thiotransesterification, and oximolysis; some of these reactions proceed to an appreciable extent only in nonaqueous solvents. PMID- 3858816 TI - Animal cell mutants defective in glycosaminoglycan biosynthesis. AB - We have obtained Chinese hamster ovary cell mutants defective in the biosynthesis of glycosaminoglycans by screening replicate colonies immobilized on polyester cloth. Depending upon the strain, the mutants accumulated less 35S-labeled glycosaminoglycans per microgram of cell protein by a factor of 6-60 compared to the wild type. Some of the mutants incorporated [6-3H]glucosamine into glycosaminoglycans to the same extent as the wild type, suggesting that sulfate addition was specifically altered. In contrast, five strains failed to generate 3H-labeled glycosaminoglycans normally. In four of these, the initiation of glycosaminoglycan assembly was specifically altered, since the addition of p nitrophenyl-beta-xyloside restored sulfation to normal. Enzymatic assay of the xylosyltransferase in extracts prepared from these mutants revealed that one of the strains, S745, contained less enzyme activity by a factor of 15 than the wild type. This mutant provides genetic evidence that the xylosyltransferase assayed in vitro is responsible for the initiation of chondroitin sulfate and heparan sulfate biosynthesis in vivo. PMID- 3858817 TI - Separation of endogenous calmodulin- and cAMP-dependent kinases from microtubule preparations. AB - Both cAMP- and calmodulin-dependent kinases are proposed regulators of microtubule function by means of their ability to phosphorylate microtubule associated protein 2(MAP 2). A cAMP-dependent kinase/MAP 2 complex is endogenous to microtubules. In this report, we demonstrate that an endogenous calmodulin dependent kinase that phosphorylates MAP 2 as a major substrate is also present in microtubules prepared under conditions that preserve kinase activity. This enzyme is identical to a calmodulin-dependent kinase purified previously from rat brain cytosol. A fraction containing calmodulin-dependent kinase and MAP 2 was separated from the cAMP-dependent kinase/MAP 2 complex by gel filtration chromatography of microtubule protein in high ionic strength buffer. All of the recovered calmodulin-dependent kinase activity in microtubules eluted in a single protein peak. The specific activity of the enzyme for MAP 2 was enriched 31-fold in this fraction compared to cytosol. Two-dimensional tryptic phosphopeptide mapping revealed that the endogenous cAMP- and calmodulin-dependent kinases phosphorylated distinct sites on MAP 2. These data demonstrate that both kinases are present in microtubule preparations and that they may differentially regulate MAP 2 function by phosphorylating separate sites on MAP 2. PMID- 3858818 TI - Rapid processing of the carboxyl terminus of a trypanosome variant surface glycoprotein. AB - The variant surface glycoprotein of the parasite Trypanosoma brucei contains a glycolipid of unknown structure covalently attached to its COOH terminus. We have shown, by using metabolic labeling with [35S]methionine or [3H]myristic acid, precipitation with specific antibodies, and NaDodSO4/polyacrylamide gel electrophoresis, that this glycolipid is attached to the variant surface glycoprotein polypeptide within 1 min after its translation. PMID- 3858819 TI - Stochastic free energy transduction. AB - Theoretical free-energy coupling systems in which the free energy coupling intermediate (e.g., the proton) occurs only in small numbers of molecules per coupling unit are shown to exhibit a number of peculiar properties: (i) the reactions involving the intermediates do not follow conventional kinetic (or nonequilibrium thermodynamic) rate laws in terms of the average concentration or chemical potential of the intermediate, (ii) the variation of the output reaction rate with the average intermediate concentration (or apparent chemical potential) is not unequivocal but depends on whether the input reaction or the leak is varied to alter that concentration, and (iii) when the apparent free energy contained in the average concentration of the intermediate is compared with the average free energy recovered in the output reaction, apparent violations of the second law of thermodynamics can occur. These phenomena are reminiscent of experimental observations in proton-linked free-energy transducing systems that suggest a more direct coupling between electron transfer chains and H+-ATPases than only through a bulk proton gradient, delta muH. Consequently, the chemiosmotic coupling theory can account for those observations if it limits the number of free energy coupling protons per chemiosmotic coupling unit to small values. PMID- 3858820 TI - A neutron diffraction study on the location of the polyene chain of retinal in bacteriorhodopsin. AB - We report on the location of the chain part of the retinylidene chromophore in the projected density of bacteriorhodopsin as determined by neutron diffraction from the two-dimensional purple membrane lattice. For this purpose, partially deuterated retinal was synthesized containing 10 deuterons at positions C-8, C 10, C-12, C-14, C-19(3), and C-20(3) of the polyene chain. Two sets of dark adapted samples were prepared in entirely different ways: (i) Deuterated retinal was incorporated biosynthetically during growth of the bacteria by using the mutant JW5, which is deficient in the synthesis of retinal. (ii) The chromophore was converted to retinal oxime, the resulting colorless apomembrane was regenerated with deuterated retinal, and the residual retinal oxime was removed by washing with bovine serum albumin. Characterization of these samples by x-ray diffraction, absorption, and flash spectroscopy showed that they were identical to native purple membrane samples as judged by these criteria. Fourier difference maps were calculated from the differences in inplane diffraction from the deuterated membranes and from protonated samples that were prepared in exactly the same way. At 8.7 A resolution, both maps show a single major peak at the same position with the center of mass of the labeled part of the chain (C-11) between helices 6 and 3 but closer to helix 6. It appears likely that the COOH-terminal helix G, to which retinal is attached at lysine-216, is either helix 2 or 6. PMID- 3858821 TI - Structure of the actin-myosin complex in the presence of ATP. AB - The structure of the complex between actin and myosin subfragment 1 (S1), designated the acto-S1 complex, in the presence of ATP was examined by electron microscopy. This was accomplished by using negative staining to study a complex of S1 covalently crosslinked to actin by the zero-length crosslinker, 1-ethyl-3 [3-(dimethylamino)-propyl]carbodiimide. Two levels of S1 binding were studied, with a molar ratio of crosslinked S1 to total actin of either 20% or 50%. The lower percentage was used to observe individual S1 molecules attached to actin, while the higher percentage was used to look at the overall pattern of S1 decoration of the actin filament. In the absence of ATP, the appearances of both the 20% and 50% crosslinked filaments closely resembled the rigor appearances obtained with noncrosslinked proteins. The arrowheads observed had the conventional structure, and individual S1 molecules were elongated and curved and appeared to make an angle of 45 degrees with the thin filament. Addition of ATP to the crosslinked acto-S1 complex caused a radical change in the structure of the cross-bridges. At both 20 and 170 mM ionic strengths, individual S1 molecules appeared to be attached at variable angles which, in contrast to rigor, did not center on 45 degrees. In addition, the S1 molecules often appeared shorter and fatter than in rigor. The 50% crosslinked acto-S1 preparation no longer showed the arrowhead pattern of S1 decoration but instead appeared to be disordered with little obvious polarity. Control experiments with ADP suggest that these effects were not due simply to a weakening of the binding of S1 to actin in the presence of nucleotide but most likely were ATP-specific. The crosslinked acto-S1 complex, which hydrolyzes ATP at about the same rate as the maximal actin-activated ATPase of S1 (Vmax), is composed of a mixture of states A X M X ATP and A X M X ADP X Pi (in which A = actin and M = myosin), with more than 50% of the crosslinked S-1 occurring in state A X M X ATP. Therefore, it appears that both states A X M X ATP and A X M X ADP X Pi have a very different conformation from the classic arrowhead conformation of the A X M state. PMID- 3858822 TI - Maintenance of differentiated rat hepatocytes in primary culture. AB - Normal adult rat hepatocytes remained viable and functional for at least 43 days when plated on collagen-coated dishes and fed chemically defined medium supplemented with dimethyl sulfoxide (Me2SO). Hepatocytes isolated by collagenase perfusion and cultured in the presence or absence of Me2SO were (i) examined by light and electron microscopy for morphological changes; (ii) analyzed for the production of albumin and other plasma proteins; and (iii) tested by autoradiography for DNA synthesis. Me2SO-treated cells continued to produce specific plasma proteins during the entire culture period; albumin production was consistently high (11-19 micrograms/ml of culture medium per 24 hr) from day 2 to at least day 43 after plating. Ultrastructural analyses demonstrated that Me2SO treated hepatocytes resembled those from intact liver in organization of cytoplasmic organelles and cellular junctions. The optimal concentration for observing the morphological and biochemical effects of Me2SO was 2% (vol/vol). We conclude that supplementation of chemically defined medium with Me2SO enables maintenance of differentiated hepatocytes in culture for extended periods of time. PMID- 3858823 TI - Directed elongation model for microtubule GTP hydrolysis. AB - We propose a role for GTP hydrolysis in microtubule assembly in which the GTPase reaction serves to stabilize tubulin subunits in the microtubule. The GTPase reaction in tubulin subunits containing GTP at microtubule ends is presumed to occur predominately in subunits at one of the interfaces between a cap of GTP containing tubulin subunit and a core of GDP-containing tubulin subunit in the microtubule, resulting in elongation of the core. The proposed model interprets the effects of GDP on microtubule assembly, using a reaction scheme in which GDP containing tubulin subunits are able to add to microtubule ends. The model can account for the GTP requirement for microtubule assembly, the GDP inhibition of the rate for microtubule elongation, and the fact that a metastable state exists after the enzymic conversion of GTP to GDP, with microtubules which are at steady state. To account for the fact that the microtubule assembly and disassembly rates are nonlinearly dependent upon the tubulin subunit concentration and for the effects of GDP-containing tubulin subunits on the kinetic properties of microtubules, our scheme includes nonproductive as well as productive binding of GTP- and GDP-containing tubulin subunits. We compare our model with an alternative scheme [Hill, T. L. & Carlier, M. F. (1983) Proc. Natl. Acad. Sci. USA 80, 7234-7238], which interprets the effects of GDP on microtubule assembly using a reaction scheme in which GDP is able to exchange with GTP in GTP containing tubulin subunits in the microtubule and in which the principal GTPase occurs in GTP-containing tubulin subunits at the microtubule/solution interface. PMID- 3858824 TI - Cytochrome P-450 metabolic activity in embryonic and extraembryonic tissue lineages of mouse embryos. AB - Mouse morulae, blastocysts, and embryonic and extraembryonic tissue layers were examined for benzo[a]-pyrene metabolism by cytochrome P-450, using the sister chromatid exchange assay. Benzo[a]pyrene exposure in vitro increased sister chromatid exchanges in blastocysts of all genetically responsive mice examined [BALB/cDub, C3H/AnfCum, and outbred Dub:(ICR) strains] but not blastocysts of the nonresponsive AKR/J strain. Benzo[a]pyrene treatment of responsive 7 1/2- and 8 1/2-day (postimplantation-stage) embryos, either intact or as separate tissue layers, increased sister chromatid exchanges in tissues of both embryonic and extraembryonic lineages--i.e., in the embryo proper, in isolated embryonic ectoderm, and in yolk sac, chorion, extraembryonic ectoderm, and extraembryonic endoderm layers. These results indicate that cytochrome P-450 is active in most or all tissues of the early mammalian embryo. It could metabolize xenobiotic molecules reaching the conceptus near the onset of morphogenesis and organogenesis, or it could have another as yet undefined role in normal development. PMID- 3858825 TI - Differential expression of mitochondrial genes between life cycle stages of Trypanosoma brucei. AB - The mitochondrial respiratory system is differentially produced during the life cycle of the parasitic protozoan, Trypanosoma brucei. We have found 14 transcripts that are derived from a maxicircle (mitochondrial DNA) region that contains sequences homologous to cytochrome c oxidase subunits I and II, unassigned reading frame 1 from mitochondrial DNA of other organisms, and two other open reading frames. Ten of these transcripts occur as pairs that differ in size by approximately equal to 200 nucleotides. While most of these transcripts occur in both life cycle forms, four transcripts are differentially expressed. Of these, two are more abundant in bloodstream forms, one is more abundant in procyclic forms, and one is present in procyclic but not bloodstream forms. These results indicate that the differential production of the mitochondrial respiratory system in T. brucei entails regulation of mitochondrial transcriptional and/or posttranscriptional processes. PMID- 3858827 TI - Incomplete X chromosome dosage compensation in chorionic villi of human placenta. AB - Studies of glucose-6-phosphate dehydrogenase (G6PD) in heterozygous cells from chorionic villi of five fetal and one newborn placenta show that the locus on the allocyclic X is expressed in many cells of this trophectoderm derivative. Heterodimers were present in clonal populations of cells with normal diploid karyotype and a late replicating X chromosome. The expression of the two X chromosomes was unequal, based on ratios of homodimers and heterodimers in clones. Studies of DNA, digested with Hpa II and probed with cloned genomic G6PD sequences, indicate that expression of the locus in chorionic villi is associated with hypomethylation of 3' CpG clusters. These findings suggest that dosage compensation, at least at the G6PD locus, has not been well established or maintained (or both) in placental tissue. Furthermore, the active X chromosome in these human cells of trophoblastic origin can be either the paternal or maternal one; therefore, paternal X inactivation in extraembryonic lineages is not an essential feature of mammalian X dosage compensation. PMID- 3858826 TI - Human alpha 1(III) and alpha 2(V) procollagen genes are located on the long arm of chromosome 2. AB - The multigene procollagen family encodes probably greater than 20 genetically distinct but structurally related polypeptide chains. Recent characterization of human procollagen clones has allowed determination of functional domains within the proteins, genomic organization, and chromosomal location. Previously, we assigned the coordinately expressed type I genes (alpha 1 and alpha 2) to chromosomes 17 and 7, respectively, and now other investigators have mapped the type II gene to chromosome 12 [Strom, C. M., Eddy, R. L. & Shows, T. B. (1984) Somatic Cell Genet. 10, 651-655]. Recently, we isolated cDNA clones encoding the fourth interstitial procollagen, type III, and the alpha 2 chain of the type V cytoskeletal components. To determine whether these genes were clustered with alpha 1(I), alpha 2(I), or alpha 1(II) or were further dispersed in the genome, in situ hybridization of the alpha 1(III) and alpha 2(V) probes to metaphase chromosomes was carried out. Here we report a fourth autosome with procollagen gene loci but the first cytological evidence for linkage. By using normal and translocated cell lines, our results show that both the alpha 1(III) and alpha 2(V) procollagen genes map to the q24.3----q31 region of chromosome 2. PMID- 3858828 TI - Efficient generation of antibodies to oncoproteins by using synthetic peptide antigens. AB - To examine the efficiency of generating protein-reactive antipeptide antibodies, 35 peptides encoded by retroviral or cellular oncogenes were used to immunize rabbits. Thirty-two peptides elicited antipeptide antibodies, of which 56% reacted with their respective oncoproteins. The length of the immunizing peptide was an important factor in generating antibodies reactive with native protein. Similar peptides differing in a single or a few amino acids could elicite antisera of markedly different reactivities. PMID- 3858829 TI - DNA sequence and characterization of human class II major histocompatibility complex beta chains from the DR1 haplotype. AB - Two HLA class II beta-chain clones from a cell line homozygous for the DR1 haplotype have been characterized and sequenced. They represent a DR beta chain (2918.4) and a DQ beta chain (2918.8). Clone 2918.4 has been used to select mRNA from a lymphoblastoid cell line, and this was injected into Xenopus oocytes with mRNA selected with a DR alpha chain. The translation products were immunoprecipitated with a beta-chain-specific monoclonal antibody and electrophoresed on two-dimensional gels. This revealed positive signals in the positions predicted for beta and alpha chains. Sequence comparisons of 2918.4 with previously published DR beta-chain sequences confirm the presence of two regions of variability in the membrane distal domain. Analysis of the sequence of 2918.8 identified it as a DQ beta chain identical to one previously published from a DR3,w6 cell line. We speculate, therefore, that the DQ beta sequence represents the DQ1 specificity shared by the DR1 and DRw6 haplotypes. PMID- 3858830 TI - Gene organization of DC and DX subregions of the human major histocompatibility complex. AB - The DC and DX subregions of the human major histocompatibility complex (MHC) have been cloned from a cosmid library made from a human B-cell line, Priess. The DC subregion, 48 kilobases, includes the DC alpha and DC beta genes. A second DC like region, the DX subregion, 35 kilobases, contains the DX alpha gene and a newly found beta gene termed DX beta. Since the DC and DX genes are highly homologous in nucleotide sequence, gene size, exon-intron organization, and direction of transcription, the DC and DX subregions were presumably generated by duplication of an ancestral alpha-beta gene pair. Nucleotide sequencing indicates that all four genes have intact coding sequences and promoter regions. Homology between the upstream promoter sequences of these four genes and seven other class II genes at nucleotides -69 to -78 and -98 to -110 highlights these previously described conserved elements. Moreover, a striking conservation of flanking alpha gene-specific and beta-gene-specific sequences has been observed. Comparison of Southern blots of Priess DNA with DC alpha and DC beta cDNA probes with isolated cosmid clones showed that (i) the human chromosome encodes only two DC alpha related and two DC beta-related genes, namely, DC alpha, DX alpha, DC beta, and DX beta, and (ii) the DC and DX subregions are homozygous in Priess cells. PMID- 3858832 TI - Thrombus radioimmunoscintigraphy: an approach using monoclonal antiplatelet antibody. AB - Thrombus detection and localization is of cardinal importance in clinical medicine. The currently available method using autologous 111In-labeled platelets is too lengthy and complex for everyday use. It requires careful separation of the platelets prior to labeling and visualization of the thrombus becomes possible only 24 hr after injection. An approach to thrombus imaging using a monoclonal antiplatelet antibody labeled with 111In or 123I is described. The antibody (7E3) prepared against human platelets inhibits the interaction between fibrinogen-coated beads and both human and dog platelets. 7E3 is an IgG1 that binds to the complexed glycoprotein IIb/IIIa. Ninety percent of a tracer dose of radiolabeled 7E3 binds to human platelets and 50% binds to dog platelets. In vitro studies showed that virtually all of the platelet-bound radioactivity becomes incorporated into clots formed by adding thrombin to whole blood. 7E3 was labeled with 111In by the cyclic anhydride diethylenetriaminepentaacetic acid method or by radioiodination with 123I. At a ratio of 1:50 (anhydride:7E3) the specific activity ranged between 10 and 40 muCi/micrograms (1 Ci = 37 GBq) without change in the antibody characteristics. In vivo studies in dogs were performed by preincubating for 1 hr the radiolabeled 7E3 with citrated blood or by directly injecting the radiolabeled 7E3 intravenously. Experimental thrombi were induced by transcatheter placement of copper coils into peripheral arteries and veins as well as in the superior vena cava and pulmonary artery. With gamma camera, visualization of venous and arterial thrombi as well as sites of intimal injury without visible thrombi, could be observed 1-1.5 hr after injection. There was no need for delayed imaging because of the fast clearance of radioactivity from the circulation nor was there need for blood pool subtraction. Two to 10-hr thrombi could be imaged but 48-hr thrombi were not detectable with this method. No change in platelet counts before and after the injection of labeled 7E3 nor increased bleeding tendency occurred. The advantages of this method are a shorter preimaging preparation time, faster visualization after injection, and no need for delayed imaging or subtraction techniques. For these reasons human investigations seem to be warranted. PMID- 3858831 TI - A frameshift mutation in the pre-S region of the human hepatitis B virus genome allows production of surface antigen particles but eliminates binding to polymerized albumin. AB - The coding region for the major polypeptide (p24S) of hepatitis B surface antigen (HBsAg) is preceded by an in-phase open reading frame termed pre-S. The coding potential of the pre-S region was examined in mouse L cells transformed with cloned hepatitis B virus DNA. Such cells produce three HBsAg-related polypeptides of Mr 24,000, 27,000, and 35,000 organized into complex particles of 22 nm diameter. These HBsAg particles bind to polymerized human albumin, but not to polyalbumins of several other species. In contrast, cells transformed with hepatitis B virus DNA bearing a frameshift mutation near the 3' end of the pre-S region secrete immunoreactive HBsAg particles containing only the 24,000 and 27,000 Mr species. These mutant particles, which lack the 35,000 Mr species, are unable to bind polymerized human albumin. These studies indicate that the pre-S region encodes the 35,000 Mr species, that this product accounts for the known polyalbumin-binding activity of HBsAg but is not required for assembly and secretion of HBsAg 22-nm particles, and that the major polypeptide of HBsAg is not derived primarily by cleavage of larger precursors encoded by the pre-S region. PMID- 3858833 TI - Toward an analogue of alcoholism in mice: criteria for recognition of pharmacologically motivated drinking. AB - Two criteria of alcoholic drinking behavior--inelasticity of demand and dissociation of intake from normal eating and drinking--are illustrated by study of alcohol-preferring C57BL/6J mice. Although these mice drink enough to become intoxicated for brief periods each night, they do not meet the more rigorous criteria for pharmacologically motivated drinking. Their intake of alcohol was dramatically decreased when they were offered diets augmented with sugar or Crisco, and the temporal pattern of drinking was correlated with the intake of food. Thus, their motivation for drinking alcohol is related to nutrition and is not drug-seeking comparable to that of human alcoholics. Since the tests are simple and decisive, it might be useful to apply them to all putative models of alcoholism. PMID- 3858834 TI - Generation of functional clonal cell lines from human bone marrow stroma. AB - Five clonal human bone marrow stromal cell lines were isolated from the adherent cell populations in long-term liquid cultures after transfection with the recombinant plasmid pSV3gpt. All the cell-line feeder layers and their conditioned media stimulated the proliferation of committed granulomonocytic stem cells (CFUc) from human bone marrow. The size and number of early erythroid stem cell (BFUe)-derived colonies were significantly increased when in the presence of 10% conditioned medium from the cell lines. Furthermore, a substantial number of mixed colonies with erythroid components were observed in the cultures in the presence of erythropoietin and conditioned medium. These findings suggest that the human bone marrow stromal cell lines obtained after transfection with pSV3gpt may be extremely useful in identifying the hematopoietic factors derived from the hematopoietic microenvironment and in analyzing their mechanism of action. PMID- 3858835 TI - Neuronal traits of clonal cell lines derived by fusion of dorsal root ganglia neurons with neuroblastoma cells. AB - In an attempt to immortalize the gene products of single neurons, somatic cell hybrids were produced by fusion of embryonic rat dorsal root ganglion (DRG) neurons with mouse neuroblastoma cells. Embryonic day 13 rat DRGs were fused with mouse neuroblastoma cells deficient in hypoxanthine phosphoribosyltransferase (HPRT; IMP:pyrophosphate phosphoribosyltransferase, EC 2.4.2.8). The hybrid cells were selected in medium with 100 microM hypoxanthine/1 microM aminopterin/12 microM thymidine to eliminate the neuroblastoma cells and with cis-hydroxyproline to retard fibroblast growth. Of the 17 lines derived, 4 manifested neuronal properties and were cloned. These lines retain both rat and mouse chromosomes and synthesize characteristic rat and mouse isoenzymes. Neuronal gangliosides, action potentials, and extensive neurite-like processes are exhibited by these hybrid cells, properties characteristic of DRG neurons but not of the neuroblastoma parent. Each line manifests a unique combination of action-potential properties and cell-surface markers, suggesting the selective expression of subsets of DRG neuronal genes. All of these neuronal properties are expressed constitutively, without the need for chemical induction or mitotic inhibition, and stably, without diminution after at least 5 months in culture. These lines may prove useful in the identification and isolation of gene products that characterize individual or small subsets of DRG neurons. PMID- 3858836 TI - Is an acetylcholine transport system responsible for nonquantal release of acetylcholine at the rodent myoneural junction? AB - Experiments were performed to investigate the effects on the spontaneous, nonquantal release of acetylcholine (AcCho) from motor nerve terminals of substances known to inhibit the AcCho transport system present in cholinergic synaptic vesicles. In mouse diaphragms, the hyperpolarization normally produced by d-tubocurarine in the endplate area of muscle fibers that had been treated by an anticholinesterase was partly or completely blocked by 2-(4 phenylpiperidino)cyclohexanol (AH5183, 0.1-1 microM), quinacrine (0.1 microM), and tetraphenylborate (1 microM). Since the sensitivity of the subsynaptic area to AcCho was not changed, the block of the hyperpolarizing action of d tubocurarine indicated in inhibition of the spontaneous, nonquantal release of AcCho. This was confirmed in experiments on rat diaphragm using direct radioenzymatic measurement of the AcCho released into the incubation medium. The release of AcCho from the innervated diaphragm was decreased by about 50% in the presence of AH5183 (0.01-1 microM) and by 42% in the presence of quinacrine (0.1 1 microM). The AcCho released was presumably neural, since the release of AcCho from 4-day denervated diaphragms was not diminished by either AH5183 or quinacrine. The results indicate that the spontaneous release of AcCho from the motor nerve terminals is highly sensitive to low concentrations of specific inhibitors and is probably mediated by a carrier. It is proposed that spontaneous release is due to the incorporation into the membrane of the nerve terminal during exocytosis of the vesicular transport system responsible for moving AcCho into the vesicle. PMID- 3858838 TI - Glycolysis and methylaminoisobutyrate uptake in rat-1 cells transfected with ras or myc oncogenes. AB - A high rate of aerobic glycolysis was catalyzed by rat-1 cells transfected with a ras oncogene (ras cells); rat-1 cells and rat-1 cells transfected with myc oncogene (myc cells) showed a low rate of glycolysis that was increased after exposure of the cells to type B transforming growth factor (TGF-beta). The uptake of radioactive methylaminoisobutyric acid or L-methionine via system A of amino acid transport also was accelerated after exposure of these cells to TGF-beta, with the myc cells being most sensitive and the ras cells least sensitive. Methionine was found to be a potent inhibitor of glycolysis in ras cells as well as in rat-1 or myc cells that were exposed to TGF-beta. We propose a relationship between the product of the ras oncogene (p21) and the protein(s) induced by exposure to TGF-beta. PMID- 3858837 TI - Production of plasminogen activator in cultures of superior cervical ganglia and isolated Schwann cells. AB - Plasminogen activator has been implicated in tissue remodeling and cell migration during embryogenesis. In the developing nervous system, these processes are evident in the migration of neurons, axonal extension, Schwann cell migration, and the ensheathment and myelination of nerves. We have studied the production of plasminogen activator in cultures of superior cervical ganglia under conditions in which both neurons and glia are present. We have found that a principal source of the enzyme in these cultures is the glial cells and that the enzyme could not be detected at the growing tips of neurites. Plasminogen activator is also produced by Schwann cells isolated from neonatal rat sciatic nerve. The production of the enzyme by these cells is stimulated 6- to 10-fold by cholera toxin. Isolated Schwann cells and glial cells in the ganglion explant cultures produce the tissue form of plasminogen activator, a form of the enzyme not often found in nonmalignant cells. Preliminary experiments suggest that neuronal-glial interactions may regulate enzyme production by Schwann cells. PMID- 3858839 TI - Crystal structure of Z-DNA without an alternating purine-pyrimidine sequence. AB - In left-handed Z-DNA, consecutive nucleotides along the chain alternate in the syn and anti conformations. Purine residues form the syn conformation readily and up to now all Z-DNA crystal structures have sequences of alternating purines and pyrimidines. However, we find that d(C-G-A-T-C-G) with the cytosines brominated or methylated on C-5 crystallizes as Z-DNA. The structure reveals thymines in syn and adenines in anti conformations. This suggests that Z-DNA may occur in sequences other than those with alternating purine-pyrimidine sequence. PMID- 3858840 TI - Reduction of mammalian ferritin. AB - Mammalian ferritin from horse spleen undergoes an electrochemical or chemical reduction reaction in which each iron atom present is reduced by one electron (2300 electrons per ferritin molecule containing 2300 Fe3+ ions). Midpoint potentials of -190 mV, -310 mV, and -416 mV were determined at pH 7.0, 8.0, and 9.0. This variation of potential with pH indicates that approximately 2 H+ are transferred to the core for each Fe3+ reduced to Fe2+. Mossbauer measurements of partially reduced ferritin give spectra that consist of a ferric quadrupole doublet with a superposed ferrous quadrupole doublet. The relative intensities of these doublets are consistent with the electrochemically determined degree of reduction. PMID- 3858841 TI - Intrinsic curvature hypothesis for biomembrane lipid composition: a role for nonbilayer lipids. AB - A rationale is presented for the mix of "bilayer" and "nonbilayer" lipids, which occurs in biomembranes. A theory for the L alpha-HII phase transition and experimental tests of the theory are reviewed. It is suggested that the phase behavior is largely the result of a competition between the tendency for certain lipid monolayers to curl and the hydrocarbon packing strains that result. The tendency to curl is quantitatively given by the intrinsic radius of curvature, Ro, which minimizes the bending energy of a lipid monolayer. When bilayer (large Ro) and nonbilayer (small Ro) lipids are properly mixed, the resulting layer has a value of Ro that is at the critical edge of bilayer stability. In this case, bilayers may be destabilized by the protein-mediated introduction of hydrophobic molecules, such as dolichol. An x-ray diffraction investigation of the effect of dolichol on such a lipid mixture is described. This leads to the hypothesis that biomembranes homeostatically adjust their intrinsic curvatures to fall into an optimum range. Experimental strategies for testing the hypothesis are outlined. PMID- 3858842 TI - Altered gene expression during cold acclimation of spinach. AB - Exposure of spinach (Spinacia oleracea L.) plants to a constant 5 degrees C induced a greater tolerance to extracellular freezing. The metabolic basis of this cold acclimation response in plants is not understood. In this study we tested the hypothesis that cold acclimation derives from altered gene transcription. We found that exposure of plants to low temperature resulted in a rapid and stable change in the translatable poly(A)+ RNA populations extracted from leaves, as determined by a cell-free in vitro translation assay. The initial appearance of mRNAs for two high molecular weight translation products correlated with an increase in freezing tolerance. Cold acclimation of plants for 8 days resulted in further qualitative changes in mRNA populations. At least four additional mRNAs increased in concentration upon continued exposure of spinach to 5 degrees C, whereas three other mRNAs present in 20 degrees C-grown leaves decreased. We also tested the possibility that the low temperature-induced mRNAs might encode heat shock proteins. We studied heat shock-induced protein synthesis by in vivo labeling techniques and found that spinach synthesized at least eight distinctive heat shock proteins during exposure to 40 degrees C. Most polypeptides induced by exposure to low temperature, however, appeared not to be heat shock proteins. Thus, the change in mRNAs induced by low temperature is a separate response from that induced by high temperature. PMID- 3858843 TI - Supramolecular assemblies of mRNA direct the coordinated synthesis of type I procollagen chains. AB - Registration of the three procollagen alpha chains and assembly of the triple helical procollagen molecules takes place in the rough endoplasmic reticulum, but the exact location and timing of assembly is not known. As part of a study of the mechanism of molecular assembly, intact collagen-producing polyribosomes from embryonic chicken tendon fibroblasts have been examined by the techniques of rotary shadowing and electron microscopy. Intact mRNA strands corresponding in length to approximately 4500 bases and complete procollagen alpha (I) chains have been observed. The mRNA strands are comprised of two mRNA chains. The ribosomes are present in pairs separated along the duplex strand by about 100 nm. The intact polysome is asymmetric; two duplex strands join, and large ribosome aggregates appear. These aggregates are dispersed by collagenase digestion, leaving separate duplex strands with ribosome pairs intact. Ribonuclease digestion yields mixtures of monosomes and ribosome aggregates. Sequential ribonuclease and collagenase digestions yield only monosomes. We propose that each ribosome reads one mRNA chain, so that each pair is thus translating two chains in synchrony. Thus, the complex morphology of the collagen-producing polyribosomes suggests that the organization of a single molecule begins by the organization of the mRNA chains themselves. PMID- 3858844 TI - Tumorigenic and metastatic properties of "normal" and ras-transfected NIH/3T3 cells. AB - To investigate the role of oncogene activation in the pathogenesis of malignant tumors, we have studied the tumorigenic and metastatic properties of NIH/3T3 secondary transfectants (designated A51) containing an activated c-Ha-ras-1 gene derived from the human T24 bladder carcinoma cell line and compared them with untransfected NIH/3T3 cells. Whereas subcutaneous implantation of NIH/3T3 cells in the supraclavicular region produced palpable tumors that failed to metastasize, NIH/3T3 cells inoculated in the footpad gave rise to malignant tumors that metastasized to the lung. Under identical conditions and irrespective of the site of implantation, A51 cells formed rapidly growing primary tumors that produced pulmonary metastases. In an assay for experimental metastasis, intravenously injected NIH/3T3 cells gave rise to pulmonary nodules only at high cell inocula and in long-term survivors (90 days after injection). In contrast, A51 cells formed multiple lung tumor colonies detectable 14 days after injection. These results indicate that "normal" untransfected NIH/3T3 cultures contain subpopulations of cells that express malignant properties and that transfection of NIH/3T3 cells with activated c-Ha-ras-1 accelerates formation of metastases. PMID- 3858845 TI - Eubacteria, halobacteria, and the origin of photosynthesis: the photocytes. AB - The halobacteria and the photosynthetic members of the eubacteria have previously been classified in two separate urkingdoms--the archaebacteria and the eubacteria, respectively. They were thought to be no more closely related to each other than they each were to the eukaryotes. In accord with this earlier classification, photosynthesis was thought to have originated twice by independent events--once within the eubacteria and once within the archaebacteria. In this paper, however, using three-dimensional ribosome structure as a probe of evolutionary divergences, we show that the eubacteria and the halobacteria are more closely related to each other than they are to any other known organisms. The simplest interpretation of our data is that all extant photosynthetic cells are descended from a single common ancestor that possessed a primeval photosynthetic mechanism. Numerous data on the occurrence of related biochemical processes in halobacteria and eubacteria support this theory. Essential components of the photosynthetic apparatus, such as carotenoids, are present in both halobacteria and in eubacteria, including the nonphotosynthetic eubacteria, suggesting that photosynthesis could be a primitive property of both groups. Our data indicate that together the eubacteria and the halobacteria form a monophyletic group for which we propose the name "photocytes." If other techniques of phylogenetic analysis confirm this evolutionary tree, we propose that the photocytes be given urkingdom status. PMID- 3858846 TI - Centipedal hemocyanin: its structure and its implications for arthropod phylogeny. AB - The oxygen carrier hemocyanin occurs in the blood of Scutigera coleoptrata, a uniramous arthropod, as well as the crustaceans and chelicerates. The native polymer appears to be composed of substructures having the same size and electron dense image as those of other arthropod hemocyanins but assembled into a unique multiple and arranged in a unique configuration. The simplest explanation of these findings is that the arthropod hemocyanins have a common origin, exemplifying a derived (as opposed to primitive) character shared by each of the three living groups. PMID- 3858847 TI - Assignment of the human gene for the glucocorticoid receptor to chromosome 5. AB - Human lymphoblastic leukemia cells of line CEM-C7 are glucocroticoid-sensitive and contain glucocorticoid receptors of wild-type characteristics. EL4 mouse lymphoma cells are resistant to lysis by glucocorticoids due to mutant receptors that exhibit abnormal DNA binding. Hybrids between the two cell lines were prepared and analyzed with respect to glucocorticoid responsiveness and to receptor types by DNA-cellulose chromatrography. Sensitive hybrid cell clones contained the CEM-C7-specific receptor in addition to the EL4 type of receptor. Several sensitive hybrid cell clones were used for selection of resistant segregants by growth in the presence of high concentrations of glucocorticoid. These segregants had lost the wild-type CEM-C7 receptor, while the EL4-specific receptor was retained. To identify the human chromosome that was lost concordantly with the CEM-C7 receptor the chromosomes of hybrid cells were studied by alkaline Giemsa (G-11) staining and trypsin/Giemsa banding. All hybrids contained human chromosomes in addition to one to two sets of EL4 chromosomes. Human chromosome 5 was present in all hybrid cell clones that expressed the CEM-C7 receptor and it was absent from those that did not. This absolute correlation was not observed for any other human chromosome. We conclude that the human gene for the glucocorticoid receptor is located on chromosome 5. PMID- 3858848 TI - Differential amplification, assembly, and relocation of multiple DNA sequences in human neuroblastomas and neuroblastoma cell lines. AB - DNA amplification, manifested by homogeneously staining regions in chromosomes and by extrachromosomal, double minute bodies, is characteristic of many neuroblastoma cell lines. Sequences recruited from a specific domain on the short arm of chromosome 2 (2p) are amplified in advanced-stage primary neuroblastomas, whereas sequences from distinctly different regions of 2p are amplified in the neuroblastoma cell line IMR-32. Five different DNA segments, which include the oncogene N-myc, three other fragments derived from the homogeneously staining region of the neuroblastoma cell line IMR-32, and a fifth fragment, derived from the neuroblastoma cell line NB-9, showed differential and variable amplification in 24 advanced-stage neuroblastoma tumors out of 112 tested specimens. All five fragments were mapped within the chromosomal region 2p23-2p25 by three different approaches. However, eight other fragments cloned from the homogeneously staining region of IMR-32 cells, which were not amplified in the tumor tissues examined, were mapped to two more proximal domains of 2p, thousands of kilobases apart from each other and from the chromosomal domain that is amplified in the tumors. These results establish the amplification, to different degrees, of a variable-sized segment of one domain near the terminus of 2p in advanced neuroblastomas. These tumors might ultimately be distinguished according to the pattern of amplification of DNA segments within this domain. The data presented also indicate the existence of a new and complex amplification mechanism in at least one neuroblastoma cell line (IMR-32), which involves not only relocation of DNA from specific genomic domains but also the formation of novel units by splicing together very distant DNA segments. PMID- 3858849 TI - 6-Phosphogluconolactonase deficiency, a hereditary erythrocyte enzyme deficiency: possible interaction with glucose-6-phosphate dehydrogenase deficiency. AB - Partial deficiency of 6-phosphogluconolactonase (EC 3.1.1.31) of the erythrocytes was discovered as an autosomal dominant disorder. Hemolytic anemia occurred in an individual who had inherited both the gene for 6-phosphogluconolactonase deficiency and that for deficiency of a nonhemolytic variant of glucose-6 phosphate dehydrogenase (EC 1.1.1.49). It is proposed that the interaction of this hereditary erythrocyte abnormality with glucose-6-phosphate dehydrogenase deficiency may explain hemolysis in some other patients who have inherited polymorphic variants of glucose-6-phosphate dehydrogenase. PMID- 3858850 TI - Functional organization of the cat's visual cortex after prenatal interruption of binocular interactions. AB - The functional consequences of interrupting in utero binocular interactions were studied by recording from single cells in area 17 of adult cats that had one eye removed at least 2 wk before birth. In these animals all cortical neurons could be driven by the remaining eye, and in tangential microelectrode penetrations, sequences of neurons containing a full 180-degree cycle of preferred orientations were encountered. Other response properties of cortical neurons in the prenatally enucleated animals were also normal with the notable exception that the dimensions of receptive fields were significantly smaller when compared with those of control animals. Our results indicate that orientation columns in the visual cortex can develop independently of ocular dominance columns, and they suggest that interruption of binocular interactions during prenatal development of the visual pathways may enhance the resolving power of the remaining eye. PMID- 3858851 TI - Dispersion of growing axons within the optic nerve of the embryonic monkey. AB - To determine whether individual optic fibers grow along constant sets of neighboring fibers, a group of 160 axons and 25 axonal growth cones were traced through a set of 500 serial electron micrographs of an optic nerve taken from a 39-day-old monkey embryo (Macaca mulatta). In single transverse sections, growth cones contact an average of 7.9 fibers, whereas axons contact 5.3 other fibers. The particular set of fibers in contact with one another changed rapidly, and, on average, growth cones and axons lost half of their original neighbors over a distance of only 8-10 micron. Between the first and last sections of the series, 92% of all initial contacts were lost. Individual axons moved freely between fiber fascicles, and the distance separating initial neighbors increased progressively. Most remarkably, the sets of fibers touched by the tips and the shanks of growth cones had no common neighbors in 17 out of 25 cases. These results demonstrate that, in primates, fibers in the optic nerve do not retain a particular set of immediate neighbors during their outgrowth. PMID- 3858852 TI - The small cardioactive peptides A and B of Aplysia are derived from a common precursor molecule. AB - We have identified cells in the central nervous system of the marine mollusc Aplysia that react with antibody raised against the small cardioactive peptide B (SCPB). Antisera to this neuropeptide stained a subset of central neurons that include the large identified buccal neurons, B1 and B2. The distribution of SCP containing neurons was used in a strategy to isolate a cDNA clone encoding the precursor protein for the peptide. RNA from neurons B1 and B2 and from cells that did not stain with SCPB antisera was used to direct the synthesis of radiolabeled cDNA probes. A cDNA clone complimentary to mRNA specifically expressed in the B1 and B2 cells was isolated by differentially screening a buccal cDNA library with these probes. The cloned cDNA segment is 1394 nucleotides in length and contains a 408-base-pair open reading frame. The predicted precursor protein is composed of 136 amino acids and has a characteristic hydrophobic leader sequence. The sizes of the precursor protein with and without this leader sequence agree with in vivo and in vitro labeling studies. The amino acid sequences for SCPB and a related peptide, SCPA, are present and are flanked by known proteolytic processing sites. PMID- 3858853 TI - Inhibition of Ca2+ conductance in identified leech neurons by benzodiazepines. AB - Benzodiazepines (BZs) in micromolar concentrations inhibit Mn2+- and Co2+ sensitive regenerative divalent cation potentials, which are revealed in the presence of tetraethylammonium ion, in leech nociceptive neurons (N cells). This BZ effect is reversible and dose-dependent. The BZs, like Mn2+ and Co2+, inhibit the maximum rate of depolarization (Vmax) and duration of divalent cation potentials at concentrations that do not significantly affect resting membrane potential or Vmax of the Na+-dependent action potential. Ultraviolet-induced BZ binding to micromolar-affinity sites in ganglia and isolated cells irreversibly blocks Ca2+ conductance in neurons without significantly affecting resting membrane potentials. BZ binding studies with leech neuronal membrane show saturable, specific binding in the micromolar concentration range that was similar to BZ binding to synaptosomal membrane fractions. The apparent Kd obtained from the micromolar-affinity BZ binding curve for leech ganglionic membrane preparations agrees well with the apparent Ki estimated from the dose response curve measuring BZ inhibition of Vmax of the divalent cation potentials. These findings indicate that BZs act like Ca2+-channel antagonists in intact neuronal preparations and are consistent with the hypothesis that BZ binding to micromolar-affinity receptors modulates voltage-gated Ca2+ channels. PMID- 3858854 TI - Neuropeptide Y injected in the paraventricular hypothalamus: a powerful stimulant of feeding behavior. AB - Neuropeptide Y (NPY) was injected directly into the paraventricular nucleus of the hypothalamus (PVN) of satiated, brain-cannulated rats, and food and water intake were measured 0.5, 1, 2, 4, and 22 hr postinjection. NPY (24, 78, 235, 783, and 2351 pmol/0.3 mul) produced a large, dose-dependent increase in food intake as well as small increase in water intake. The latency to eat was about 10 min, with substantial feeding occurring in the first 30 min. At dose below 78 pmol, the eating generally occurred only within the first hour. At doses above 235 pmol, however, the subjects' food intake continued to increase such that by 4 hr postinjection they had consumed the equivalent of normal 22-hr intake, and 22 hr postinjection they had also eaten significantly more than control subjects. Previous studies have shown that norepinephrine injected into the PVN stimulates feeding through alpha-adrenergic receptors. To investigate a possible interaction, subjects were given PVN injections of phentolamine (60 nmol) prior to injections of either NPY (78 pmol) or norepinephrine (20 nmol). Phentolamine pretreatment significantly decreased feeding elicited by norepinephrine without affecting feeding elicited by NPY. This suggests that NPY does not stimulate feeding through the release of endogenous norepinephrine. The powerful stimulation of feeding elicited by this neuropeptide suggests an important role for hypothalamic NPY, or a structurally related peptide, in the regulation of feeding behavior. PMID- 3858855 TI - In vitro expression of chloroplast genes in lysates of higher plant chloroplasts. AB - A DNA-dependent in vitro-coupled transcription-translation system has been prepared from lysates of isolated chloroplasts. These lysates are comparable to those of Escherichia coli in transcriptional and translational fidelity and efficiency in response to a given template DNA. When Nicotiana tabacum chloroplast DNA is used as template with chloroplast lysates (N. tabacum or spinach) or E. coli lysates, NaDodSO4 gel analysis reveals similar polypeptide patterns that are distinct from the patterns obtained with E. coli DNA. Genes in recombinant plasmids containing chloroplast DNA are also expressed in these in vitro systems. DNA . RNA hybridization experiments show that transcripts are synthesized from most of the chloroplast genome. Newly synthesized large subunit of ribulosebisphosphate carboxylase/oxygenate and a transcript of the large subunit gene (rbcL) are observed in chloroplast lysates using as template chloroplast DNA or cloned fragments of tobacco chloroplast DNA that contain the large subunit gene. Results suggest that differential expression of chloroplast genes occurs in vitro. By using cloned chloroplast DNA templates in this homologous system, it is possible to identify and map structural genes for chloroplast proteins. PMID- 3858856 TI - Calmodulin genes in trypanosomes are tandemly repeated and produce multiple mRNAs with a common 5' leader sequence. AB - In Trypanosoma brucei gambiense, the Ca2+ binding protein calmodulin is encoded by three identical tandemly repeated genes. The transcripts of these genes consist of several RNA species similar in size. A 35-nucleotide spliced leader sequence is present at the 5' end of each mRNA but is not encoded by DNA contiguous to these genes. We have identified two different sites for the fusion of the leader to the mRNA. These results strongly support the idea that a novel, possibly discontinuous, transcription mechanism is used by these parasites. PMID- 3858857 TI - Protein kinase activity associated with the purified rat hepatic glucocorticoid receptor. AB - The Mr 94,000 steroid binding component of rat hepatic glucocorticoid receptor purified 5000-fold under-goes calcium-stimulated phosphorylation in vitro by [gamma-32P]ATP. Exogenous histones can be phosphorylated by this preparation without calcium. Calmodulin did not stimulate phosphorylation of the glucocorticoid receptor beyond that obtained with calcium alone. Although the specific calmodulin inhibitor calmidazolium had no effect, trifluoperazine and chlorpromazine, nonspecific calmodulin inhibitors, abolished the calcium dependent phosphorylation of receptor. EGTA blocks the effect of calcium; magnesium cannot substitute for calcium. Cyclic nucleotides (cAMP or cGMP) do not stimulate phosphorylation of the receptor in the absence of calcium. Phosphorylation of the glucocorticoid receptor is steroid dependent. Triamcinolone acetonide elicited activation and phosphorylation of receptor in the presence of calcium, whereas the antagonists progesterone, cortexolone, and beta-lapachone did not. Sodium molybdate, which blocks the thermal activation step, inhibits phosphorylation of the receptor. The activated form of the glucocorticoid receptor is required for phosphorylation to occur. The ATP analogues 8-azido-ATP or fluorosulfonylbenzoyl adenosine, inhibit phosphorylation of the Mr 94,000 component, implying the presence of an ATP binding site inherent to the receptor. PMID- 3858858 TI - Monoclonal antibody 18B8 detects gangliosides associated with neuronal differentiation and synapse formation. AB - Mouse monoclonal antibody 18B8 detects developmentally regulated antigens in chicken retina and brain. The antigens detected by immunofluorescence appear initially on cell bodies in retinas of 6-13 day embryos. In older embryos during synapse formation and in adults, the antigen is localized in discrete laminae within the inner synaptic layer of retina and also is present in the outer synaptic layer and the outer segments of photoreceptor cells. The antigens from retina and brain were purified partially and were shown to be gangliosides of unknown structure that contain at least two sialic acid residues. Gangliosides that are recognized by antibody 18B8 change both qualitatively and quantitatively during neuronal development. These changes were correlated with the spatial and temporal changes in antigen expression detected histochemically. PMID- 3858859 TI - Mouse DNA polymerase alpha-primase terminates and reinitiates DNA synthesis 2-14 nucleotides upstream of C2A1-2(C2-3/T2) sequences on a minute virus of mice DNA template. AB - The distribution of termination and initiation sites in a 5081-nucleotide minute virus of mice DNA template being copied by a highly purified mouse DNA polymerase alpha-DNA primase complex in the presence of GTP has been examined. The 3' hydroxyl termini (17 in all) were clustered at six sites that were located 2-14 nucleotides upstream of C2A2C2, C2AC3, or C2A2T2 sequences. When either [alpha 32P]- or [gamma-32P]GTP was included in the DNA polymerase reaction mixtures, nascent DNA became radiolabeled. Analysis of the 32P-labeled material following treatment of the DNA with tobacco acid pyrophosphatase, bacterial alkaline phosphatase, or ribonuclease T1 revealed the presence of oligoribonucleotide chains averaging 5-7 nucleotides long and beginning with 5' GTP residues. Eight presumptive DNA primase initiation sites were located opposite C4 or C5 sequences 3-9 nucleotides upstream of one of the three closely related hexanucleotides C2A2C2, C2AC3, and C2A2T2. RNA-DNA junctions were found 3-10 nucleotides downstream of DNA primase initiation sites. The results indicate that hexanucleotides having the general formula C2A1-2(C2-3/T2), herein referred to as psi, are involved in promoting termination of DNA synthesis and/or de novo initiation of RNA-primed DNA chains by DNA polymerase alpha-primase. PMID- 3858860 TI - Is there a single pathway for the folding of a polypeptide chain? AB - We argue that folding of the compact domains of proteins can occur with adequate rapidity in the absence of a unique directed mechanism, provided that native-like local structure dominates the folding process. We further suggest that the evolution of amino acid sequences should favor multiple paths to the folded state. Existing physicochemical and mutational data are not inconsistent with a many-pathway model. The analogy of a jigsaw puzzle, with multiple routes to a unique solution, appears to be particularly apt. PMID- 3858861 TI - Purification and crystallization of the calcium binding protein of sarcoplasmic reticulum from skeletal muscle. AB - The calcium binding protein of skeletal muscle sarcoplasmic reticulum (also referred to as calsequestrin) was purified by release from the compartment of the vesicles with the detergent octaethyleneglycol mono-n-dodecyl ether (C12E8) and by subsequent precipitation of the calcium binding protein with specific divalent cations. The isolated protein exhibited a single band on NaDodSO4/PAGE and bound 903 nmol of Ca2+ per mg of protein. The calcium binding protein could be crystallized in the presence of Ca2+, Mg2+, Sr2+, or combinations of these three cations used in a narrow concentration range. Needle-shaped crystals of up to 500 X 50 micron were obtained. The removal of the divalent cations resulted in solubilization of the crystals. The spacings and angles of the crystals were obtained by electron microscopy using three different methods of sample preparation. By freeze-drying and negative staining electron microscopy, the spacings along axes a and b were determined to be 10-11 nm each, and the angle between the two axes was 90 degrees. By thin section electron microscopy, the spacing along axis a was 11 nm, along axis c was 15-16 nm, and the angle between the two axes was 75 degrees. This study reports (i) a simple and rapid method for purification of the calcium binding protein; (ii) conditions to crystallize the protein using Ca2+, Mg2+, Sr2+, or combinations of the three; and (iii) some preliminary characteristics of the crystals. The crystalline nature was characterized by electron microscopy and x-ray diffraction. The larger crystals diffracted beyond 3-A Bragg spacing. PMID- 3858862 TI - A distinct class of vertebrate collagen genes encodes chicken type IX collagen polypeptides. AB - Type IX collagen is a disulfide-bonded protein first isolated from hyaline cartilage. The structure of this collagen is unusual in that the molecules contain three triple-helical domains interspersed with noncollagenous regions. The molecules are heterotrimers composed of three genetically distinct polypeptide chains. In our laboratory, cDNAs specific for two of these polypeptide chains have recently been isolated. Here we report on the isolation of genomic clones by use of these cDNAs as probes for screening a chicken genomic library. Nucleotide sequence analysis of these clones shows that the exon structure of type IX collagen genes is fundamentally different from the exon structure of the genes for the fibrillar collagen types I-III. Whereas the sizes of exons in fibrillar collagen genes are related to a basic 54-base-pair coding unit, the exons of type IX collagen genes show a large variation in size and do not appear to be related to a 54-base-pair unit. We propose, therefore, that type IX collagen genes belong to a class of vertebrate collagen genes distinct from that of fibrillar collagens. PMID- 3858863 TI - 3-Deazaadenosine-induced disorganization of macrophage microfilaments. AB - 3-Deazaadenosine (c3Ado) has been reported to inhibit a number of cellular functions. These biological effects of c3Ado have generally been attributed to its ability to act as inhibitor and substrate of S-adenosylhomocysteine hydrolase. In this report, it is revealed by fluorescence microscopy that c3Ado caused disorganization of the microfilament system of mouse macrophages at concentrations (greater than or equal to 5 microM) similar to those that inhibited antibody-dependent phagocytosis and zymosan-stimulated H2O2 production by these cells. Inhibition of phagocytosis and perturbation of microfilaments by c3Ado were completely abrogated by washing the macrophages free of this agent and allowing the cells a 30-min recovery period. Furthermore, these effects of c3Ado on phagocytosis and microfilaments appeared to be independent of the increase in S-adenosylhomocysteine and S-3-deazaadenosylhomocysteine that occurred in these macrophages. First, periodate-oxidized adenosine and 3-deaza(+/-)aristeromycin, two other inhibitors of S-adenosylhomocysteine hydrolase that caused greater increases in macrophage S-adenosylhomocysteine than did c3Ado, had no effect on either phagocytosis or microfilaments. Second, pretreatment of macrophages with periodate-oxidized adenosine (to inhibit S-adenosylhomocysteine hydrolase) prevented the subsequent metabolism of c3Ado to S-3-deazaadenosylhomocysteine but did not diminish the effects of c3Ado on phagocytosis or microfilaments. These results demonstrate that c3Ado can perturb the microfilament system of cells and provide an alternative mechanism for the biological effects of c3Ado. PMID- 3858864 TI - Immunochemical evidence for induction of the alcohol-oxidizing cytochrome P-450 of rabbit liver microsomes by diverse agents: ethanol, imidazole, trichloroethylene, acetone, pyrazole, and isoniazid. AB - Isozyme 3a of rabbit liver microsomal cytochrome P-450, also termed P-450ALC, was previously isolated in this laboratory from animals administered ethanol or imidazole, and the purified cytochrome was shown to function in the reconstituted system as an oxygenase in catalyzing the oxidation of ethanol and other alcohols. Although liver microsomes from animals treated in various ways exhibit increased alcohol-oxidizing activity, evidence was not available as to whether this was due to enzyme induction or to other factors influencing the activity. Immunochemical quantitation of P-450 isozyme 3a has now been achieved by use of purified antibody to this cytochrome in NaDodSO4/PAGE/blotting and dot-blotting techniques. The specific content of isozyme 3a in liver microsomes was found to be increased from 2- to greater than 4-fold by administration of the following agents, in increasing order of effectiveness as inducers: isoniazid, trichloroethylene, pyrazole, ethanol, imidazole, and acetone. Isozyme 3a represents about 5% of the total P-450 in control animals and is increased to as high as 27% by acetone treatment. Isozyme 3a-dependent butanol-oxidation activity, determined by the inhibitory effect of antibody on the various microsomal preparations, was found to increase proportionally with increased content of this cytochrome. PMID- 3858865 TI - Nucleotide sequence of the G protein gene of human respiratory syncytial virus reveals an unusual type of viral membrane protein. AB - The major surface glycoprotein (G) of human respiratory syncytial (RS) virus has an estimated mature Mr of 84,000-90,000. Among a library of cDNA clones prepared from RS virus mRNAs, we identified clones that hybridized to a message that encoded a Mr 36,000 polypeptide that was specifically immunoprecipitated with anti-G antiserum. The amino acid sequence of the G protein backbone was determined by nucleotide sequence analysis of several of the cDNA clones. It contains a combination of structural features that make it unique among the known viral glycoproteins. The G mRNA is 918 nucleotides long and contains a single major open reading frame that encodes a polypeptide having 298 amino acid residues with a Mr of 32,587, a finding consistent with the Mr 36,000 estimate for the in vitro translation product of the G mRNA. This suggests that greater than 50% of the molecular weight of the mature glycoprotein may be contributed by carbohydrate. Glycosylation of G is largely resistant to tunicamycin, an inhibitor of the attachment of N-linked oligosaccharides, suggesting that the majority of the carbohydrate residues are attached via O-glycosidic bonds. In accordance with this, serine and threonine residues, the acceptor sites for O linked oligosaccharides, comprise 30.6% of the total amino acid composition. There are also four potential acceptor sites for N-linked oligosaccharides. The amino acid sequence lacks both an NH2-terminal hydrophobic signal sequence and a COOH-terminal hydrophobic region. Instead, a strongly hydrophobic region is located between amino acid residues 38 and 66. This region may serve as both the signal to insert the nascent polypeptide through the membrane and as the membrane anchor site. PMID- 3858866 TI - Significance of similarities in patterns: an application to beta interferon related DNA on human chromosome 2. AB - The nucleotide sequence of a 14-kilobase (kb) region of the human beta interferon (IFN-beta)-related DNA locus on chromosome 2 (genomic DNA clone lambda B3) was determined and compared to that of the IFN-beta 1 gene by using the Sellers TT algorithm. This algorithm aligns segments of one sequence with similar segments in a second sequence. A strategy was developed for assessing the significance of similarities between DNA sequences based on a scheme that recognizes patterns or runs of identities within an alignment. The pattern score (II) thus obtained is an entropy-like measure. Numerically it is a reflection of the length of the second longest run of identity in an alignment plus a correction factor due to the other shorter identity runs in the alignment. When the IFN-beta 1 gene is compared to a random nucleotide sequence, the distribution of II scores in such comparisons fits a Gaussian function. This strategy has been used to identify seven segments along one strand of lambda B3 DNA that are related to segments in IFN-beta 1; these seven alignments have II scores greater than or equal to 3 standard deviations above the mean score obtained in comparisons between IFN-beta 1 and random nucleotide sequences. One of these alignments (section 7) has a II score 8.02 standard deviations above this mean score. The likelihood of finding an alignment statement as good as that in section 7 in a random sequence the length of the human genome is approximately 10(-7). Furthermore, the lambda B3 DNA sequence in section 7 selects the human IFN-beta 1 gene as the most significant alignment in computer searches of mammalian nucleotide sequence data bases. PMID- 3858867 TI - Identification of an IgE-binding protein by molecular cloning. AB - The synthesis and function of IgE are dependent on IgE-binding proteins, which include cell surface IgE receptors and IgE-binding lymphokines. To further our understanding of the IgE system, we have engaged in the molecular cloning of genes for some of these proteins. In studying the in vitro translation products of mRNA from rat basophilic leukemia (RBL) cells, we have identified a Mr 31,000 polypeptide that binds IgE and is also reactive with antibodies to proteins affinity-purified from RBL cells with IgE immunoadsorbent. For the molecular cloning, double-stranded cDNA was synthesized from sucrose gradient-fractionated RBL mRNA, inserted into plasmid pBR322, and used to transform Escherichia coli. By screening transformants with a hybridization-selection/in vitro translation procedure, we identified one clone containing cDNA that hybridized to mRNA coding for a Mr 31,000 IgE-binding protein. The DNA sequence of this cloned cDNA (571 base pairs) was determined and the amino acid sequence corresponding to part of the protein was deduced. In RNA blot analysis, the cDNA hybridized with a mRNA of 1100 nucleotides found in RBL cells but absent in cells not expressing IgE receptors. This cloned cDNA most likely codes for the Mr 31,000 IgE-binding protein identified in RBL cells, which appears to be related to the IgE-binding phenotype of the cells and which may have a significant role in the IgE-mediated activation of basophils and mast cells. PMID- 3858868 TI - Interactions between acidic proteins and crystals: stereochemical requirements in biomineralization. AB - Acidic matrix macromolecules are intimately involved in biological crystal growth. In vitro experiments, in which crystals of calcium dicarboxylate salts were grown in the presence of aspartic acid-rich proteins, revealed a stereochemical property common to all the interacting faces. Calcite crystals are nucleated on stereochemically analogous faces when proteins are adsorbed onto a rigid substrate. The importance of this property in biomineralization is discussed. PMID- 3858869 TI - Direct measurement of lateral transport in membranes by using time-resolved spatial photometry. AB - Spatially resolving light detectors allow, with proper calibration, quantitative analysis of the variations in two-dimensional intensity distributions over time. An ultrasensitive microfluorometer was assembled by using as a detector a microchannel plate-intensified video camera. The camera was interfaced with a software-based digital video analysis system to digitize, average, and process images and to directly control the timing of the experiments to minimize exposure of the specimen to light. The detector system has been characterized to allow its use as a photometer. A major application has been to perform fluorescence recovery after photobleaching measurements by using the camera in place of a photomultiplier tube (video-FRAP) with the goal of detecting possible anisotropic diffusion or convective flow. Analysis of the data on macromolecular diffusion in homogenous aqueous glycol solutions yielded diffusion constants in agreement with previous measurements. Results on lipid probe diffusion in dimyristoylphosphatidylcholine multibilayers indicated that at temperatures above the gel-to-liquid crystalline phase transition diffusion is isotropic, and analysis of video-FRAP data yielded diffusion coefficients consistent with those measured previously by using spot photobleaching. However, lipid probes in these multibilayers held just below the main phase transition temperature exhibited markedly anisotropic diffusive fluxes when the bleaching beam was positioned proximate to domain boundaries in the P beta' phase. Lipid probes and lectin receptor complexes diffused isotropically in fibroblast surface membranes with little evidence for diffusion channeled parallel to stress fibers. A second application was to trace the time evolution of cell surface reactions such as patching. The feasibility of following, on the optical scale, the growth of individual receptor clusters induced by the ligand wheat germ agglutinin was demonstrated. PMID- 3858870 TI - Theoretical treatment of microtubules disappearing in solution. AB - The origin of the two-phase (cap, no cap) macroscopic kinetic model of the end of a microtubule is reviewed. The model is then applied to a new theoretical problem, namely, the Mitchison-Kirschner [Mitchison, T. & Kirschner, M. W. (1984) Nature (London) 312, 237-242] experiment in which aggregated microtubules in solution spontaneously decrease in number (shorten to disappearance) while the surviving microtubules increase in length. The model fits the experiments without difficulty. PMID- 3858871 TI - Type beta transforming growth factor/growth inhibitor stimulates entry of monolayer cultures of AKR-2B cells into S phase after a prolonged prereplicative interval. AB - Type beta transforming growth factor/growth inhibitor (TGF-beta/GI) is demonstrated to be a potent stimulator of DNA synthesis in AKR-2B mouse embryo cells with a prolonged (greater than 24 hr) prereplicative phase when compared with other growth factors (epidermal growth factor, platelet-derived growth factor, or fibroblast growth factor) that induce DNA synthesis 12-14 hr after stimulation. In addition, TGF-beta/GI inhibits the early peak of DNA synthesis produced by EGF and insulin before the later stimulatory effects of TGF-beta/GI become manifest. TGF-beta/GI induces a marked morphologic transformation in these cells prior to their entry into S phase. Like the other growth factors, TGF beta/GI stimulates an early increase in the rate of protein synthesis in AKR-2B cells and its stimulatory effect on DNA synthesis is enhanced by insulin. The data show that this molecule is a growth factor for certain mesenchymal cells in monolayer culture but only after a prereplicative phase that is significantly longer than that of other growth factors. PMID- 3858872 TI - Caenorhabditis elegans DNA that directs segregation in yeast cells. AB - We have isolated seven DNA fragments from Caenorhabditis elegans that enhance the mitotic segregation of autonomously replicating plasmids in the yeast Saccharomyces cerevisiae. These segregators, designated SEG1-SEG7, behave like isolated yeast chromosomes: they increase the stability and simultaneously lower the copy number of circular plasmids during mitotic growth in yeast. During meiosis, plasmids containing the C. elegans segregators show higher levels of precocious or aberrant disjunction than do plasmids bearing isolated yeast centromeres. Yet one of the segregators improved the meiotic segregation of the parental plasmid. We estimate that there may be as many as 30 segregator sequences in the C. elegans genome, a value that is consistent with the polycentric nature of C. elegans chromosomes. Five of the seven segregators are linked to sequences that are repeated in the worm genome, and four of these five segregators cross-hybridize. Other members of this family of repetitive DNA do not contain segregator function. Segregator sequences may prove useful for probing the structure of centromeres of both C. elegans and S. cerevisiae chromosomes. PMID- 3858874 TI - Molecular basis of mutations at the waxy locus of maize: correlation with the fine structure genetic map. AB - More than 40 mutant alleles of the waxy (Wx) locus of maize are available for molecular analysis. Previous studies have examined the nature of phenotypically unstable Wx mutant alleles caused by insertion of the maize transposable activator (Ac) and dissociation (Ds) elements. In this study we have used Southern blot analysis to characterize the locus in 22 strains harboring wx alleles with stable mutant phenotypes. Of these mutations, 17 are of spontaneous origin, 4 were induced by gamma rays, and 1 was induced by ethyl methanesulfonate. Of these 22 alleles, we find that 13 have either insertions or deletions within the Wx transcription unit. The insertions range in size from 150 base pairs to 6.1 kilobases. For 4 of the 6 deletions identified, the two breakpoints are within the Wx gene. For 9 other alleles we can detect no obvious lesions within or around the transcription unit. Evidence is presented that the insertions and deletions result in the mutant phenotype and are not polymorphisms. This conclusion is based on two findings: (i) a survey of inbred lines revealed only a single instance of polymorphism within the transcription unit, whereas all of the lesions described alter the transcription unit; and (ii) there is an excellent correlation between the position of these lesions on the physical map and their relative position on a fine structure genetic map of the locus. PMID- 3858873 TI - Differences in mutagenic and recombinational DNA repair in enterobacteria. AB - The incidence of recombinational DNA repair and inducible mutagenic DNA repair has been examined in Escherichia coli and 11 related species of enterobacteria. Recombinational repair was found to be a common feature of the DNA repair repertoire of at least 6 genera of enterobacteria. This conclusion is based on observations of (i) damage-induced synthesis of RecA-like proteins, (ii) nucleotide hybridization between E. coli recA sequences and some chromosomal DNAs, and (iii) recA-negative complementation by plasmids showing SOS-inducible expression of truncated E. coli recA genes. The mechanism of DNA damage-induced gene expression is therefore sufficiently conserved to allow non-E. coli regulatory elements to govern expression of these cloned truncated E. coli recA genes. In contrast, the process of mutagenic repair, which uses umuC+ umuD+ gene products in E. coli, appeared less widespread. Little ultraviolet light-induced mutagenesis to rifampicin resistance was detected outside the genus Escherichia, and even within the genus induced mutagenesis was detected in only 3 out of 6 species. Nucleotide hybridization showed that sequences like the E. coli umuCD+ gene are not found in these poorly mutable organisms. Evolutionary questions raised by the sporadic incidence of inducible mutagenic repair are discussed. PMID- 3858875 TI - Evolutionary amplification of a pseudogene. AB - The family of mouse major urinary protein (MUP) genes has about 35 members, clustered together on chromosome 4. Most of the genes belong to two major subfamilies (group 1 and group 2) each with 12-15 members. Recently we showed that most of the group 1 and group 2 genes are arranged in pairs, each containing a group 1 and a group 2 gene in divergent transcriptional orientation, with 15 kilobases of DNA between the two cap sites. Here we present the nucleotide sequence of the first exon of six group 1 genes and four group 2 genes. The data confirm the close relationship of the genes within each group and the considerable divergence of the two groups from each other. The four group 2 genes all carry the same nonsense mutation in codon 7 of the sequence that specifies the mature protein. Thus, not only do these genes have a common ancestor, but also it seems that their amplification followed the mutation of the ancestor to a pseudogene. Taking into account the 3' flanking regions of the two genes, the overall size of each gene-pair is about 45 kilobases. The sequencing data supports our earlier suggestion that this 45 kilobase domain is the unit of Mup amplification. PMID- 3858876 TI - Chemosensory recognition of mouse major histocompatibility types by another species. AB - Mice can recognize one another by individually characteristic body scents that reflect their genetic constitution at the extremely polymorphic major histocompatibility complex (MHC) of genes on chromosome 17. Reproductive behavioral manifestations of this sensory communication system include MHC related mating preferences and neuroendocrine responses that affect preimplantation pregnancy and arise from the MHC-related scent of alien males. We have shown previously that mice can be trained in a Y maze to distinguish the scents of urine of congeneic mice that differ genetically only at the MHC. By means of an automated olfactometer, we now show that rats also can similarly distinguish the urinary scents of MHC congeneic mice. Thus, the mode of individual recognition that depends on scents determined by MHC genes can operate across species barriers. PMID- 3858877 TI - Response of patients in classes III and IV of cardiomyopathy to therapy in a blind and crossover trial with coenzyme Q10. AB - Coenzyme Q10 (CoQ10), a biochemically established redox component of respiration including the coupled mechanisms of electron transfer and oxidative phosphorylation, is naturally present in the human myocardium. A double-blind and double-crossover trial has been conducted by administering CoQ10 and a matching placebo orally to two groups of patients having class III or IV cardiomyopathy (classification according to criteria of the New York Heart Association). Group A received CoQ10 and then placebo; group B received placebo and then CoQ10. Blood levels of CoQ10 and cardiac function were determined at 0 and 4 weeks (control stabilization period) and at 16 and 28 weeks (after the 12-week CoQ/placebo treatment periods). For group A, significant increases in CoQ10 blood levels and cardiac function occurred during CoQ10 treatment and then decreased during crossover to placebo. For group B, there was no change in CoQ10 blood levels and cardiac function during placebo treatment, but increases in both parameters occurred in crossover to CoQ10. These patients, steadily worsening and expected to die within 2 years under conventional therapy, generally showed an extraordinary clinical improvement, indicating that CoQ10 therapy might extend the lives of such patients. This improvement could be due to correction of a myocardial deficiency of CoQ10 and to enhanced synthesis of CoQ10-requiring enzymes. PMID- 3858878 TI - Coronary thrombolysis with facilitated absorption of intramuscularly injected tissue-type plasminogen activator. AB - Conventional activators of the fibrinolytic system used for coronary thrombolysis entail unavoidable delay, risk of bleeding, or both in contrast to tissue-type plasminogen activator (t-PA). Because the potential benefit of coronary thrombolysis is inversely related to the duration of antecedent ischemia, this study was performed to develop an approach for facilitated absorption of intramuscularly injected t-PA potentially adaptable for prompt, self-medication. In rabbits, absorption was markedly potentiated by hydroxylamine hydrochloride and electrical stimulation at the injection site. Intramuscular administration of t-PA in doses of 1 mg/kg of body weight, comparable to amounts given intravenously to patients (0.5-0.75 mg/kg), elicited peak blood levels of 431 +/- 52 (SEM) ng/ml 5 min after injection, well within the therapeutic range. In dogs, absorption facilitated by hydroxylamine promptly elicited angiographically documented coronary thrombolysis as well. The approach developed should ultimately permit prompt coronary thrombolysis and enhanced salvage of jeopardized ischemic myocardium in patients with life-threatening coronary thrombi. PMID- 3858879 TI - Failure to demonstrate pluripotential hemopoietic stem cells in mouse brains. AB - Hemopoietic stem cells as defined by the capacity to produce spleen colonies in lethally irradiated recipients were reported by P. F. Bartlett [(1982) Proc. Natl. Acad. Sci. USA 79, 2722-2725] to be present in high frequencies in mouse brain. He also reported similar numbers of colony-forming units, spleen (CFU-s), in the brains of Wf/Wf mice, the bone marrow of which lacks detectable spleen colony-forming cells. To verify these observations, single cell suspensions were produced from murine brains by incubation with trypsin and DNase, followed by removal of myelin by Percoll gradient centrifugation. Two to 13 CFU-s were detected per brain. This low number suggested contamination of the brains by either blood or bone marrow leaking from the skull bones during dissection. When the isolated, intact brains were washed carefully in balanced salt solution, the recovered number of CFU-s decreased to 0.1-0.4 per brain. No CFU-s could be detected in the brains of W/Wv mice. It is concluded that the CFU-s observed by Bartlett in preparations of mouse brain did not originate from the brain tissue. PMID- 3858881 TI - Neurochemical basis for the photic control of circadian rhythms and seasonal reproductive cycles: role for acetylcholine. AB - A pharmacological approach was used to examine the role of acetylcholine in the photic control of circadian rhythms and seasonal reproductive cycles. The experimental protocol was designed to determine whether the administration of carbachol, a cholinergic agonist, could mimic the effects of brief light pulses on gonadal function and/or the circadian rhythm of wheel-running activity in golden hamsters. Intraventricular injections of carbachol, administered singularly at discrete phase points throughout the circadian cycle, induced phase dependent shifts in the free-running rhythm of activity similar to those caused by a brief light exposure. Injections of carbachol once every 23.33 hr for 9 weeks entrained the activity rhythm and stimulated the neuroendocrine-gonadal axis in a manner similar to that observed after the presentation of 1-hr light pulses at this frequency. In contrast, the administration of carbachol once every 24 hr did not consistently provide an entraining signal for the activity rhythm and did not stimulate reproductive function. Importantly, the effects of carbachol on the seasonal reproductive response were correlated with the timing of the injections relative to the activity rhythm. These findings suggest that acetylcholine may play an important role in the mechanism by which light regulates circadian rhythms and seasonal reproductive cycles. PMID- 3858880 TI - Regulation by vitamin D metabolites of messenger ribonucleic acid for preproparathyroid hormone in isolated bovine parathyroid cells. AB - We have recently determined that high calcium concentrations, in parallel with their suppressive effects on parathyroid hormone (PTH) secretion, reversibly and specifically decrease preproPTH mRNA in cultured bovine parathyroid cells. In order to determine whether vitamin D metabolites also regulate the content of preproPTH mRNA, we tested their effects on bovine parathyroid cells in the same culture system. Levels of preproPTH mRNA were determined by dot-blot hybridization or blot hybridization with a labeled cloned cDNA probe. Incubation with 1,25-dihydroxycholecalciferol at doses varying from 10 pM to 0.1 microM caused a direct decrease in mRNA down to 50% of control values at 48 hr. There was no evidence that 1,25-dihydroxycholecalciferol, even at the highest concentrations, had any toxic effects on cell number or viability or on total RNA or RNA synthesis. Levels of alpha-actin mRNA did not change in the same experiments, and the suppression of preproPTH mRNA was reversible. When the relative potency of various vitamin D metabolites in suppressing preproPTH mRNA was evaluated, 1,25-dihydroxycholecalciferol greater than 24,25 dihydroxycholecalciferol greater than 25-hydroxycholecalciferol greater than vitamin D3 (cholecalciferol). These effects were highly specific and suggest that vitamin D metabolites play an important role in regulating the production of PTH. PMID- 3858882 TI - Peptides from regenerating central nervous system promote specific populations of macroglia. AB - The regenerating central nervous system of goldfish contains peptides referred to as glia-promoting factors (GPFs) that stimulate the proliferation of mammalian macroglia. We find that, in vitro, GPF1 and GPF3 promote the appearance of oligodendroglia and GPF2 and GPF4 stimulate proliferation of astroglia. The activities of GPF1, GPF3, and GPF4 increase during regeneration of the goldfish visual system. These results suggest that brain peptides may play a role in the recovery of the injured central nervous system by regulating the growth and development of specific macroglial populations. PMID- 3858885 TI - Hemodynamic effects of postpulmonary administration of prostaglandin D2 in fetal animals. AB - Dose-response relationships in pulmonary vascular resistance (PVR), mean systemic arterial pressure (SAP), and heart rate (HR) to left atrial administration of prostaglandin D2 (PGD2) were determined in five fetal lambs. Fetuses were delivered by cesarean section from chloralose anesthetized ewes with the umbilical circulation maintained intact. Fetuses were prevented from breathing thus maintaining pulmonary vascular tone in the elevated fetal state. Blood was withdrawn from the inferior vena cava and pumped at constant flow into the lower left lobe of the fetal lung. Postpulmonary infusions of PGD2 brought about dose dependent decreases in pulmonary vascular resistance. Heart rate tended to increase in fetal lambs. Mean systemic arterial pressure increased in the fetal lambs at all doses tested except for the largest dose (44.14 micrograms/kg X min), which produced slight hypotension. These data demonstrate that exposure to the systemic circulation prior to entering the pulmonary vasculature does not alter the preferential dilator action of PGD2 on fetal pulmonary vessels nor does it produce significant systemic hypotension. PMID- 3858884 TI - A system for monocytic differentiation of leukemic cells HL 60 by a short exposure to 1,25-dihydroxycholecalciferol. AB - The human promyelocytic cell line HL 60 can be induced to differentiate toward more mature myeloid or monocytic forms by a variety of agents. This process is thought to require several days of exposure to the inducer, thus making it difficult to identify the early cellular changes which are fundamental to the differentiation program, and to relate the induction to phases of the cell cycle. In order to study the kinetics of leukemic cell differentiation we have developed a system for the induction of rapid monocytic maturation in a subpopulation of HL 60 cells. The cells are exposed to 10(-7) M 1,25-dihydroxycholecalciferol for 4 hr in serum-free medium. Subsequent incubation in a complete medium results in cellular differentiation recognizable by several criteria (phagocytosis, nonspecific esterase reaction, adherence to substratum, cell morphology) beginning at 10 hr from the exposure to the inducer. Approximately 20 hr later 30 40% of the cells in culture show the differentiated phenotype and are capable of phagocytosis. The proportion of differentiated cells in culture decreases thereafter. This system has been utilized to study the expression of c-myc oncogene in relation to the kinetics of maturation, and it was found that the inhibition of the expression of this gene precedes the onset of phenotypic differentiation by approximately 8 hr, is transient, and is accompanied by a brief retardation of cell proliferation, which resumes the normal rate within 24 hr of the exposure to the inducer. PMID- 3858883 TI - Sequence and expression of the rat prodynorphin gene. AB - We report here the isolation of a lambda genomic clone that contains the nucleotide sequence coding for the main exon of the rat prodynorphin (proenkephalin B) gene. This exon codes for the majority of the translated region of prodynorphin mRNA including the opioid peptides alpha-neo-endorphin, dynorphin A, and dynorphin B. The entire 3' untranslated region is also contained on the lambda clone. Nucleotide sequence comparison with the main exon of the human prodynorphin gene reveals both structural and sequence homology. RNA blot analysis reveals that prodynorphin transcripts can be seen in numerous regions of the rat brain and in the adrenal gland, spinal cord, testis, and anterior pituitary. PMID- 3858886 TI - The influence of denervation and nerve growth factor on dorsal root axonal sprouting. PMID- 3858887 TI - An unexpected potent positive chronotropic effect of (15S)-15-methyl prostaglandin E1 in the isolated guinea-pig right atria. AB - The effects of (15S)-15-methyl-prostaglandin E1, a synthetic analog of PGE1, other stable prostaglandins, histamine and noradrenaline were studied on the isolated spontaneously beating right atria from guinea-pig, rat and rabbit. When compared with other prostaglandins, histamine and noradrenaline, 15-methyl analog of PGE1 has the most potent positive chronotropic effect and the highest affinity as indicated by a significantly higher pD2 value as compared to other tested analogs in the isolated guinea-pig right atria. Neither the 15-methyl analog of PGE1 nor other stable prostaglandins induced any effect on the atria from rat and rabbit when relatively higher concentrations were used. 15-Methyl-PGE1 did not induce a positive inotropic effect. The maximum positive chronotropic response to 15-methyl-PGE1 was found to be about 60% of that of noradrenaline and histamine but almost equal to that of PGE1. These results were taken as evidence that 15 methyl-PGE1 has an unexpected potent positive chronotropic effect on the isolated spontaneously beating guinea-pig right atrium. The possible mechanism of the action of 15-methyl-PGE1 are discussed. PMID- 3858888 TI - Generation of prostaglandin E2-like radioimmunoreactive material in human plasma during storage at -20 C but not at -80 C. AB - Concentrations of prostaglandin E2 (PGE2) as determined by radioimmunoassay following silicic-acid column chromatography in extracted samples (n = 5) of human plasma (Na2EDTA: 18 mg/5 ml blood; indomethacin: 1mg/5 ml blood) were less than 1.0 pg/ml when the samples were extracted immediately after blood withdrawal. Virtually identical concentrations of PGE2 were determined in samples stored at -80 degrees C for up to 6 months. However, when the same analytical procedures were used after prolonged storage of the plasma samples at -20 degrees C an apparent rise in the estimated plasma concentrations of PGE2 up to 5.1 +/- 1.9 pg/ml (3 months) and to 25.2 +/- 7.8 pg/ml, (6 months) was observed. Repeated freezing and rethawing of 4 plasma samples within 48 hours after blood withdrawal did not influence concentrations of PGE2 thus excluding acute destruction of residual platelets as the cause of the observed time-dependent rise in radioimmunologically determined 'PGE2'. Two plasma samples stored at -20 degrees C for 26 months were subjected to HPLC subsequent to silicic acid column chromatography. Radioimmunoassay of PGE2 performed for each eluted fraction resulted in 3 distinct peaks of "PGE2"-like activity, suggesting heterogeneity of cross-reacting compounds generated during prolonged storage at -20 degrees C. In conclusion, to determine concentrations of PGE2 in human plasma by means of radioimmunoassay the samples should either be extracted immediately after blood withdrawal or be kept at -80 degrees C. PMID- 3858889 TI - Leiomyomas release prostaglandins. AB - Prostaglandin release by leiomyomas obtained throughout the menstrual cycle was examined using a superfusion technique. The principal prostaglandin produced was 6-keto-PGF1 alpha, with PGF2 alpha and PGE2 in lesser amounts. No cyclical changes in prostaglandin release was detected. PMID- 3858890 TI - The development and application of a direct radioimmunoassay for prostaglandin E2 utilising a gamma-labelled ligand. AB - A direct radioimmunoassay for urinary PGE2 has been developed, using a Pasteur Institute antibody and a gamma-labelled ligand. The assay does not require preliminary solvent extraction of the sample or any chromatographic steps. Gamma labelled PGE2 of high specific activity was prepared by direct iodination of a PGE2-histamine derivative. Results obtained by the direct assay after serial dilution of urine samples were parallel to the standard curve. Accuracy of the method was determined by the recovery of added amounts of PGE2 to diluted urine (r = 0.094, y = 1.039x-0.535, n = 20). The lowest concentration of PGE2 distinguishable from zero was 0.063 pg/ml. The assay curve covered the range of 0.063-500 pg/ml. The assay was desensitized by increasing the concentration of both label and antiserum to obtain a curve covering the range of 2-1250 pg/ml. Intra-assay and interassay coefficient of variation were 8.6% and 12.5% respectively. Values obtained by the direct method were lower than those obtained by gas chromatography mass spectrometry (r = 0.43, y = 1.57x-3.52, n = 12) and by radioimmunoassay using 3H-PGE2 (r = 0.76, y = 0.93x+2.87, n = 12). Antibodies to PGE2 were produced in rabbits immunised with a conjugate of PGE2 covalently linked to thyroglobulin by carbodiimide reaction. The method was used to study the effect of urine flow and sodium intake on PGE2 excretion levels in normal volunteers. PGE2 excretion was flow dependent but did not vary with sodium excretion. PMID- 3858891 TI - The effect of stress on the dexamethasone suppression test. AB - The dexamethasone suppression test (DST) was studied in 40 presurgical subjects and 20 controls. Cortisol plasma concentrations were measured before and after a nocturnal dose of 1 mg dexamethasone. Nineteen of the 40 patients (47.5%) failed to show a suppression of plasma cortisol after dexamethasone. Nonsuppression on the DST was associated with a significantly higher baseline plasma cortisol concentration. Another putative indicator of emotional stress, the level of acute anxiety, was also studied. There was a significant difference in the level of acute anxiety among suppressors, nonsuppressors, and controls--the level of anxiety in nonsuppressors being significantly higher than in controls. It is concluded that stress associated with a physical danger can be a cause of nonsuppression on the DST. PMID- 3858892 TI - The research diagnostic criteria for endogenous depression and the dexamethasone suppression test: a discriminant function analysis. AB - Most studies examining the validity of the Research Diagnostic Criteria (RDC) for endogenous depression have been negative. RDC endogenous subtyping is not associated with short- or long-term treatment outcome, family history of affective disorder, or premorbid personality disorder. Studies examining its relationship to the dexamethasone suppression test (DST) are mixed; half report a significant association, and half do not. The RDC endogenous diagnosis may lack validity either because the criteria do not represent, or are not specific to, the endogenous subtype, or the diagnostic algorithm is inappropriate. In the present study, we conduct a discriminant function analysis on the 10 criteria for the endogenous subtype using DST results as the independent variable. We constructed a new diagnostic algorithm and cross-validated it on a second patient sample. In both samples the discriminant function classification was significantly associated with DST results, whereas the RDC algorithm was not. PMID- 3858893 TI - Effect of weekly testing on dexamethasone suppression test results in normal subjects. AB - Four weekly repetitions of the overnight dexamethasone suppression test (DST) in each of 10 healthy volunteers yielded plasma cortisol levels that were consistently suppressed. These results suggest that unlike some dynamic tests of hypothalamic-pituitary functioning, the DST does not produce false-positive results due to weekly repetition. This finding is of interest because previous research has demonstrated that a subgroup of melancholic initial nonsuppressors continue to resist cortisol suppression despite apparent clinical improvement. The present findings do not support the hypothesis that continued nonsuppression in clinically improved patients is an artifact of serial testing. PMID- 3858894 TI - Diagnostic heterogeneity and the DST in consecutive psychiatric admissions. AB - There is uncertainty about the clinical usefulness of the dexamethasone suppression test (DST). It is also unclear whether there are advantages to a 1-mg or 2-mg DST. Eighty-three consecutive psychiatric inpatients were randomly given a 1-mg or 2-mg DST within the first week of admission. Sensitivity, specificity, and diagnostic confidence are reported for this group, and also in combination with those for 119 semi-consecutive psychiatric admissions. Although rates of nonsuppression were consistently higher in patients with affective disorders than in patients with other diagnoses, the diagnostic confidence of the DST for major depression in a diverse and unselected patient population was not greater than the prevalence of the disorder. The DST does not appear to be useful for clinical diagnostic decision-making. Nonetheless, the DST may still be an important biological marker in neuroendocrine psychiatric research. PMID- 3858895 TI - The cortisol response to desipramine in endogenous depressives and normal controls: preliminary findings. AB - Plasma cortisol levels were monitored for 2 hours after an intramuscular injection of 75 mg desipramine in 13 endogenous depressives and 20 normal controls. Endogenous depressives had a significantly reduced cortisol response in comparison to normal controls, not explained by sex, age, or baseline cortisol differences between groups. A lack of a cortisol rise of 1.5 micrograms/dl above baseline by 45 minutes discriminated best, with 7 of 13 depressives (55%) being identified in contrast to only 1 of 20 normals (5%). The results suggest that this may be a useful biological test with acceptable sensitivity (55%) and excellent specificity (95%). Furthermore, these data suggest that norepinephrine may be stimulatory to cortisol in man. PMID- 3858896 TI - Lateral ventricular enlargement and clinical response in schizophrenia. AB - The relationship between enlargement of the lateral ventricles in the brains of schizophrenic patients and clinical response to neuroleptic treatment, as assessed by the ventricle-brain ratio (VBR) and psychopathology scores, was studied in a sample of 39 patients with schizophrenia or schizoaffective psychosis during a drug-free washout and after 3 1/2 weeks of treatment with either haloperidol or thioridazine. There was a weak, but statistically significant positive relationship between VBR and improvement on BPRS Psychosis factor scores after 3 1/2 weeks of treatment, and a negative correlation between VBR and baseline (washout) scores on the BPRS Anergia factor. Patients with enlarged VBRs, as defined by two criteria, also tended to show a better response to neuroleptics than patients below these criterion values. PMID- 3858897 TI - Characteristics of family background in bulimia. AB - 21 women consulting for bulimia were followed in individual psychotherapy and assessed for family background characteristics. Two sets of data are reported: objective data concerning the incidence of 'broken homes', i.e., with a history of separation or divorce or death of parents; subjective data concerning the image of the family and the identifications which are worked through in psychotherapy. Among our 25 bulimic patients, 13 patients came from 'broken homes' in which, in 9 cases, separations were so radical that it was impossible to maintain relationships with both parents; 12 patients came from close-knit families which in 6 cases were actually 'closed families' hiding massive internal tensions. The proportion of broken homes is significantly higher than in a population of 25 overweight patients without bulimia also undergoing individual psychotherapy. There exists a sharp discrepancy between the actual family failings and the wish of patients to maintain their 'family unit' fantasy. The hypothesis is made that the occurrence of bulimia may be related to the combination of a history of violent separations (or threats of violent separation) in the family, and the endless denial of these separations. PMID- 3858898 TI - [Clinical, radiology, and histology of a TPS-screw prosthesis. III: Histology]. PMID- 3858899 TI - [A new measurement method for determination of the vertical jaw dimension]. PMID- 3858900 TI - [The modified Gerber articulator]. PMID- 3858901 TI - [New position in periodontology (I)]. PMID- 3858902 TI - [Interpretation of radiographs]. PMID- 3858903 TI - [Criteria for selection of office computers (II)]. PMID- 3858904 TI - [Office hygiene--current status]. PMID- 3858905 TI - [In vitro study of the cariostatic effect of Merfluan toothpaste]. PMID- 3858906 TI - [Telephone recall. (Report of further learning program for dental assistants]. PMID- 3858908 TI - [Tips for purchasing supplies]. PMID- 3858907 TI - [Tooth gaps often result from information gaps. Advice to mothers ..."from the first deciduous tooth on"]. PMID- 3858909 TI - [Thermo-disinfection--a real help in the office]. PMID- 3858910 TI - [Why children should still be inoculated]. PMID- 3858911 TI - Effects of DOM and DMT in a proposed animal model of hallucinogenic activity. AB - A previously proposed animal model of lysergic acid diethylamide's (LSD) effects in humans was tested for its applicability to other hallucinogens, 2,5-dimethoxy 4-methyl amphetamine (DOM) and N,N-dimethyltryptamine (DMT). Both "free" and "forced" exploration tests in a behavioral pattern monitor were used to determine the effects of these hallucinogens on the normal tendencies of rats to avoid novel and central areas, respectively. The effects of DOM (0.3-1.0 mg/kg) were quite similar to those previously reported for LSD. Specifically, DOM reduced crossovers, holepokes, and rearings when rats were tested in a novel environment. In a familiar environment, only rearing activity was reduced with minimal effect on ambulation. Like LSD, entries into the central area were reduced in both situations. DOM also produced a dose-dependent reduction of entries into the novel chamber in a free exploration test. Pretreatment with the serotonin (5-HT) antagonist cyproheptadine (1.0 mg/kg), which does not block the psychological effects of hallucinogens in humans, selectively blocked DOM's reduction of rearings without altering DOM's reduction of center entries, crossovers, or holepokes. Like LSD and DOM, DMT (0.5, 1.0, and 2.0 mg/kg) produced a selective reduction of entries into the center region when rats were forced to explore a novel holeboard chamber. All three doses also selectively reduced holepoke responses without affecting crossovers or rearings. In conclusion, enhanced avoidance of novel and central areas appears to be a valid indicator of hallucinogenic activity since LSD, DMT, and DOM all share this property. Conversely, the reduction of rearings produced by LSD and DOM is not a suitable model behavior since the effect is not produced by DMT and cyproheptadine is capable of selectively blocking this effect. PMID- 3858912 TI - Bronchodilatory properties of 2-decarboxy-2-hydroxymethyl prostaglandin E1. AB - We evaluated in a double-blind study the bronchodilatory properties of 2 decarboxy-2-hydroxymethyl prostaglandin E1 (PGE1-carbinol), described recently as a nonirritant bronchodilator in animals. Fifteen asthmatic patients received by inhalation single doses of 1, 10, and 30 micrograms PGE1-carbinol, 55 micrograms PGE2, and placebo (10% ethanol in normal saline, which was also used as diluent for the PGs). Such pulmonary function tests as forced expiratory volume in 1 second, forced vital capacity, and maximal expiratory flow were monitored during 2 hours following inhalation of each compound. 10 and 30 micrograms PGE1-carbinol produced significant but short-acting bronchodilation, similar to that caused by 55 micrograms PGE2. One-third of the patients reported mild cough and throat irritation during and shortly after inhalation of 30 micrograms PGE1-carbinol or 55 micrograms PGE2. Placebo and 1 microgram PGE1-carbinol produced minimal side effects, but neither agent caused bronchodilation. In an adjunctive, unblinded trial, the same patients received 400 micrograms fenoterol. Fenoterol caused greater bronchodilation 15 and 30 minutes after inhalation than did the PGs in the double-blind study. PMID- 3858913 TI - Nonprotein sulfhydryls as possible components of the protective effect of rosaprostol on the rat gastric mucosa. AB - Experiments were designed to examine the possibility that nonprotein sulfhydryl groups of the gastric mucosa could participate in the protection of rat gastric mucosa by rosaprostol (the Na salt of 9-hydroxy-8,12 trans-19,20-bis-nor prostanoic acid). Gastric mucosal lesions and the content of nonprotein sulfhydryls were evaluated after orally administered absolute ethanol. Pretreatment with rosaprostol by gavage prevented gastric lesions and reduced or prevented the decrease of mucosal nonprotein thiols. N-ethylmaleimide, a sulfhydryl blocker, worsened the ethanol-induced gastric lesions and lowered further the non protein thiols. Both variables were improved by the PG analogue and by PGE2. These results suggest a possible role of endogenous nonprotein sulfhydryl groups in the gastric protective effect of rosaprostol. PMID- 3858914 TI - Gastroduodenal ulceration in rabbits producing antibodies to prostaglandins. AB - The consistent occurrence of gastric and duodenal ulcers was observed in laboratory rabbits used for production of high-titer plasma antibody to 6-keto PGF1 alpha and PGE2. Perforations developed in 7 of 10 animals, usually just distal to the pyloroduodenal junction. The remaining rabbits showed gross and/or microscopic evidence of imperforate ulcers and erosions. These lesions appeared to be direct pathologic complications of an immune response directed against prostaglandins since animals immunized against met-enkephalin with similar methods had no ulcers. PMID- 3858915 TI - The construction of nasal septal obturators. PMID- 3858916 TI - Prosthetic management of electrical burns to the oral commissure. PMID- 3858917 TI - Early experiences with high palladium dental ceramic alloys. PMID- 3858918 TI - A comprehensive orthodontic and prosthodontic treatment plan. PMID- 3858919 TI - Centric relation and occlusion in full mouth reconstruction. PMID- 3858920 TI - Office and automation in the dental laboratory. PMID- 3858921 TI - Hospital-based dentistry with Bradley Seto, D.D.S., and Sean Avera, C.D.T. PMID- 3858922 TI - Legal and regulatory considerations in environmental biotechnology applications. PMID- 3858923 TI - Proposed addition of prohibited experiments to the NIH guidelines. PMID- 3858924 TI - Congressional hearing on the adequacy of current statutes and scientific knowledge for the regulation of biotechnology. PMID- 3858925 TI - Distribution and vasomotor effects of peptide HI (PHI) in feline cerebral blood vessels in vitro and in situ. AB - Peptide HI (PHI)-immunoreactive nerve fibres were numerous around cerebral blood vessels of the cat. The number and distribution resemble that previously found for vasoactive intestinal polypeptide (VIP), a peptide with which PHI co-exists in pial arteries, at least in some segments. PHI and VIP elicit dilatation in a concentration-dependent manner in isolated middle cerebral arteries; the maximum effects were similar but VIP was considerably more potent. Neither effect was blocked by atropine, cimetidine or propranolol, confirming an action at a non adrenergic, non-cholinergic site. In chloralose-anaesthetized cats PHI and VIP elicited concentration-dependent dilatations; the magnitude of responses was similar, however, considerably more PHI was necessary to elicit the same response as that of VIP. The results suggest that though both peptides are co-localized and may act at the same receptor, VIP is a more likely candidate for eliciting dilatation during physiological conditions. PMID- 3858926 TI - Relation between 67Ga uptake and the stage of inflammation induced by turpentine oil in rats. AB - For the establishment of the experimental system to judge easily the effect of anti-inflammatory drug, 67Ga-citrate was used. The weight of granuloma tissues induced by inflammable agent, turpentine oil, gradually increased and reached a maximum at 6 days after the administration of turpentine oil. Gallium-67 accumulation in the inflammatory lesions showed also a maximum at 6 days after that. Both patterns were closely similar each other. These results showed that the processes and/or stages of inflammation could be indicated by the pattern of 67Ga uptake. PMID- 3858928 TI - [Filariasis of the Loa loa type]. PMID- 3858927 TI - [Sensitivity of 6 genetic markers for the identification of illegitimacy in Mexico City]. PMID- 3858929 TI - [Acute leukemia secondary to the treatment of multiple sclerosis with chlorambucil]. AB - A new case is reported here of acute myeloid leukemia after chlorambucil therapy for multiple sclerosis. This is the sixth case seen at our institution during the period 1978 to 1984. The leukemogenic potential of the immunosuppressive cytotoxic drugs in patients with multiple sclerosis is emphasized. PMID- 3858930 TI - [Dural venous sinus occlusions in hemopathies]. AB - Four men and four women, aged 16 to 43, developed dural sinus thrombosis, five patients with acute lymphoblastic leukemia (L.A.L.) and three with non Hodgkin malignant lymphoma (N.H.M.L.). All the cases of L.A.L. were F.A.B.-2 subtype without any unusual hematological features. In 6 cases, the disorders occurred during the phase of therapeutical induction (E.O.R.T.C.-A.L.L.-H.R. protocol) at D5, D10, D15, D26, D30, D38, and in 2 cases during maintenance after a period of remission. All patients had received Vincristine and Prednisone, intrathecal Methotrexate in 5 cases, encephalic irradiation in 3 cases and L-Asparaginase in one case. Three women were taking contraceptive drugs. The neurological symptoms and signs were headache due to intracranial hypertension in 6 cases, Grand Mal seizures in 5 cases, focal seizures in 2 cases, a regressive hemiparesis in 4 cases, stupor in 3 cases. CT scan was abnormal in 4 cases, displaying oedema in 3 cases and an hemorrhagic infarction in 1 case. Angiography showed in all cases occlusion of the superior sagittal sinus in 7 cases and of the transverse sinus on 1 case. Six patients received anticoagulant therapy. Outcome was fatal in 3 cases: in 2 cases of L.A.L., the condition worsened rapidly after the onset and death was related to a tentorial herniation; in 1 case of N.H.M.L. death resulted from an intercurrent infection. PMID- 3858931 TI - A technique for creating soft tissue models. PMID- 3858932 TI - Code word for computers in the dental laboratory--'change'. PMID- 3858933 TI - Question: getting ready to buy a computer? Stop! Look! and Listen! PMID- 3858934 TI - Can you afford a computer for your dental lab? PMID- 3858935 TI - You have a personal computer in your laboratory now .. how do you like it? PMID- 3858936 TI - CDT today: what is the comprehensive examination? PMID- 3858938 TI - Veneering teeth with resin. PMID- 3858937 TI - The psychology of color. PMID- 3858939 TI - CDT today: who writes the tests? PMID- 3858940 TI - Should we shrink the health care system? PMID- 3858941 TI - A monocytic leukemoid reaction: a manifestation of preleukemia. PMID- 3858942 TI - Mechanical bowel preparation for elective colorectal surgery. PMID- 3858943 TI - [Therapeutic contribution of recently marketed antibiotics]. PMID- 3858944 TI - [Rheumatoid polyarthritis, Gougerot-Sjogren syndrome and chronic myeloid leukemia. Apropos of 2 cases]. AB - Two cases of rheumatoid arthritis with Sjogren's syndrome are reported which developed chronic myelocytic leukemia. The relationships between these illnesses, rheumatoid arthritis and Sjogren's syndrome on the one hand, and a myeloproliferative disorder on the other hand, are discussed, as well as the possible role of the treatment regimens (synoviorthesis with radio-isotopes in case number 1). The possibility that this association came about by pure coincidence can not be excluded due to the exceptional character of these illnesses. PMID- 3858945 TI - [The Pierre Marie-Sainton syndrome]. AB - Pierre Marie and Sainton syndrome, or cleido-cranial dysostosis is characterised by a triad: clavicular aplasia, delayed ossification of the fontanelles and sutures of the vault of the skull and hereditary transmission. To these may be added multiple dental inclusions - hence its interest in stomatology. The authors described a familial hereditary case affecting mother and son, the former with an incomplete syndrome and the latter with the complete picture of major dysostosis. PMID- 3858946 TI - [Treatment of superior incisor gemination]. AB - An 11 year old child presented to our department with an isolated abnormality of the left superior median incisor which was bigeminate. The existence of two distinct roots allowed the separation of 21 and 21 b with extraction of 21 b and preservation of 21, whose crown was reconstituted by means of a composite. There was a favourable outcome with conservation of the vitality of the tooth and no signs of ankylosis. PMID- 3858947 TI - [A technic for osteotomy of the malar bone]. AB - On the basis of the results of osteotomy of the malar in malunion of facial fractures, the authors suggest the use of this operation in the correction of maxillary malformations including faulty development of the cheeks. Two cases are described. PMID- 3858948 TI - [Christ-Siemens-Touraine syndrome. Completed management is unrelated to the number of years]. AB - The authors report a case of anhidrotic ectodermal dysplasia (A.E.D.) or Christ Siemens-Touraine syndrome, which was completely edentated and fitted with prostheses at school age for two reasons: for nutritional reasons, as the child was unable to eat under normal physiological conditions; and for psychological and cosmetic reasons. PMID- 3858949 TI - [A case of bouton d'orient]. AB - Oriental Sore is the dry cutaneous form of leishmaniasis, a parasitic infection common to man and to certain vertebrates and transmitted by insects: the phlebotomes. This benign tropical disease exists in South East France where it remains very rare, human contamination always being accidental. The lesions, single or multiple, affect the skin only. On the face, the differential diagnosis arises with other much commoner cutaneous lesions (impetigo, etc.). They consist, after 2 to 4 months of incubation, of a rounded erythematous papule, neither pruritic nor painful, which becomes secondarily excavated to produce a crusted ulcer. This lesion, typical at this stage, then persists for many months before an unsightly scar develops. Treatment is local: surgical excision offering the possibility of histological examination and hence a diagnosis. Plastic surgery may be used to correct scars in advanced forms. PMID- 3858950 TI - [The impacted canine. Review of 212 cases. General principles of treatment]. AB - The authors have studied the localization, the functional and radiological signs, the complications, the etiologies and the treatment, according to 212 cases of impacted canines. The upper impacted canines are more frequent and women are more concerned, it can be unilateral as well as bilateral. If the mentioned etiologies are debatable and if the functional signs are poor, the complications are frequent: infectious, mechanical, tumorous or algesic. The therapeutic approach should primarily consider the evolutive potential of the tooth. As a matter of fact, before undergoing any surgical or any complicated surgical orthodontic treatment, the result of our study shows that the eventual absence of any ankylosis image has to be precised on successive profile headfilms taken with an interval of 6 to 12 months. If any evolution is seen, it would be enough to remove the mucous obstacle and then bring the tooth to a normal position by some mechanical means. In the adverse case, the prognosis won't be favorable and leads to either abstention or a dubious therapeutics. PMID- 3858951 TI - [Vulvovaginogingival syndrome. New characteristic grouping of plurimucous erosive lichen planus]. AB - The triple association of a chronic painful erosive vulvitis, an erosive or desquamative vaginitis and an erosive vestibular gingivitis constitutes a hitherto unreported syndrome. The first 19 cases of this affection seen in the Hopital Tarnier over the last three years are presented and analyzed, the etiology of these erosive mucosal lesions, limited to three body regions, being lichen planus in each case. Detection of mucosal erosion at one of these three sites now requires clinical investigation of the other two, and biopsy of least one of them from the edge of an eroded zone, as well as search for other-possible mucocutaneous areas of lichen planus. Clinical onset is often asynchronous, one lesion appearing before the others, the simplest to recognize being gingival erosive lichen. In one case, however, peri-erosive lamellar detachments suggested chronic desquamative gingivitis of possible benign pemphigoid origin. Erosive lichen planus of vulva and vagina has not been reported previously. Knowledge of this syndrome allows correlation between lichen planus and certain cases of erosive gingivitis, erythroplastic vulvitis and desquamative vaginitis. PMID- 3858952 TI - [Computerized data collection and processing of graphic cephalometric data in dentomaxillofacial orthodontics]. AB - The authors present a graphic program adapted to cartography for the acquisition and processing of graphic data from x-rays and graphics used in dento-maxillo facial orthopaedic cephalometry. They demonstrate the performance obtained in the automation of cephalometry, in the real-time edition of the results, in the processing of graphic images and the resulting alpha-numerical results. PMID- 3858953 TI - [The computer: practical application in dentomaxillofacial orthodontics]. AB - We have proposed a system of data processing adapted to the specific conditions of dento-maxillo-facial orthopaedics. The volume of information storage and the need for their real-time processing have led to a system of multiple terminals separating the administrative aspects from the technical applications. The progress in computer material will rapidly lead to the disappearance of paper files and documents (impressions, teleradiography). A review of the literature confirms that there is no other equivalent system available at the present time. We are convinced by the computerized organisation. PMID- 3858954 TI - [Pathogenesis of infraclusions]. AB - Any case of infraclusion should be considered to be a defect of the vertical adaptation of the dental system, i.e. as a local alveolar disturbance. Two types of pathogenesis can be proposed: an interposition between the dental arches of an obstacle which prevents the egression of the teeth and, the lesser known pathogenesis, the pressure exerted simultaneously on the vestibular and lingual surfaces of the incisors can, because of the oblique surface of contact, result in a system of forces which results in the arrest of dental eruption. PMID- 3858955 TI - [Incisor infraclusion and muscular behavior. Thumbsucking]. AB - After defining incisor infraclusion, the author relates the cause to either anatomical muscular abnormalities or to abnormalities of function. He concludes that the second type can be easily improved when the cause is removed. He discusses the most common of these causes, thumb sucking, which can only disappear when the child reaches an age allowing him to overcome this habit. Any coercive, mechanical, physical or psychological treatment will only worsen or prolong this problem. PMID- 3858956 TI - [Anterior open bite: the role of the infra-alveolae in its diagnosis and treatment]. AB - Anterior open-bites may be skeletal, alveolar or mixed. The infra-alveolae is always due to a postural or functional muscular cause and the clinical examination plays an important part in the diagnosis. Delaire's cephalometric analysis can define the type of infra-alveolae. In view of their aetiology, the infra-alveolae require functional re-education, although glossectomy and multiple bands therapy may also be useful. PMID- 3858957 TI - [The role of osteotomy in the treatment of incisor infraclusion in adults]. AB - The author emphasises the need for aetiological diagnosis in incisor infra alveolisms. Treatment must take into account the cause of the deformity (interposition of the tongue) which must be corrected by rehabilitation, more often than by surgery. In the greatest number of cases, this type of deformity may disappear with simple rehabilitation. Wassmund osteotomy is reserved for failures of rehabilitation. PMID- 3858958 TI - [Management of incisor supraclusion]. AB - The orthopaedic treatment of incisor supraclusion is possible by ingression of the superior incisors under both following conditions: the ingression to be obtained should not be superior to 8 mm, and there is a strong assumption that restitution of normal labial and lingual functions will be simultaneously obtained and especially a good labial competence in function and at rest. Dr Burstone's technique of incisor ingression uses an appliance operating only on the superior dental arch with light and constant forces which can be precisely adjusted. F.E.O. is only exceptionally required for maintenance of the posterior fixation. PMID- 3858959 TI - [Value and results of glossectomy in open bite]. AB - Partial glossectomy is an important part of the treatment of a number of forms of apertognathia, provided it is performed wisely with a rigorous technique (i.e. with sufficient resection and adapted to the lesions produced by the macroglossia). It can obtain favourable and constant results. PMID- 3858960 TI - [Lingual vascular malformations, their consequences on the growth of the inferior facial plane. The integration of orthodontic embolization]. AB - Lingual vascular malformations are usually benign, but have repercussions on the growth of the maxillo-mandibular unit in the child. The improvement in the vascular problems at puberty leads the authors to prefer a conservative form of treatment, hence the important role of embolization techniques. These techniques should be followed by the fitting of a lingual guide appliance, similar to the "mono-block" designed by Pierre Robin. This orthesis forces the child to modify incorrect movements due to the volume of the angiomatous tongue and gradually teaches him to automatize the new motor images created based on the dynamics of a virtually normal tongue, within the 6 months following embolization. PMID- 3858961 TI - Ups and downs for salivary IgA. AB - IgA levels in saliva differed 15-fold between different individuals. The correlation between IgA in repeated stimulated saliva samples was good in both a short and a 2-yr period. The correlation between resting and stimulated samples was low, in particular when output of IgA over time was considered. Physical exercise affected salivary protein concentrations and also percentage of IgA to protein. The elevated IgA levels in saliva at pregnancy were not accompanied by a similar change of IgA activity against specific bacteria. PMID- 3858962 TI - Multiangular viewing of dental enamel in the SEM: an apparatus for controlled mechanical specimen preparation. AB - An apparatus is described which can be used for controlled sectioning and grinding of tooth specimens to be studied in the SEM. Each specimen can be sectioned and ground along several planes. During the procedures the specimen remains fixed to a stub which after the final processing can be inserted directly into the scanning electron microscope. PMID- 3858963 TI - A scanning electron microscope study of the three-dimensional extent of Retzius lines in human dental enamel. AB - A method involving carefully planned sectioning and grinding of human maxillary first premolars, allowing enamel structure to be studied with the SEM in more than one plane at the same time, was employed to demonstrate the extent of Retzius lines within the confines of the three-dimensional enamel cap. It was found that the Retzius lines behaved as could be predicted by the theory stating that the striae represent one-dimensional cuts of two-dimensional, curved growth planes. Retzius lines in adjoining planes were continuous across the edge where the two planes met. In a supernumerary tooth, the surface of its hypoplastic tooth tip was continuous with distinct Retzius lines. The present observations provide for the first time direct morphologic verification of the supposed nature of Retzius lines, with reference to extent and continuity in three-dimensional space. PMID- 3858964 TI - Inactivation of guinea-pig serum proteinase inhibitors by Bacteroides gingivalis. AB - The activity of proteinase inhibitors of guinea-pig serum was evaluated by using trypsin as test enzyme. Strains of black-pigmented Bacteroides species were incubated with serum under anaerobic conditions. Strains of Bacteroides gingivalis inactivated the trypsin inhibitors of guinea-pig serum within 1 h, while the other strains reduced the activity of the trypsin inhibitors by less than 50% within 48 h. The inactivation of proteinase inhibitors of guinea-pig serum by B. gingivalis may be an important pathogenic mechanism in the spreading necrotic infections induced in guinea pigs by pure cultures of this species. PMID- 3858965 TI - Influence of antiseptic storage solutions on physical properties of endodontic guttapercha points. AB - The effect of three commonly used antiseptic storage solutions on some physical properties of endodontic guttapercha points was studied. The solutions tested were: 70% isopropyl alcohol, 5% chloramine and 0.5% chlorhexidine. As a control solution, physiologic saline was used. There was a marked decrease in the force necessary to bend the points after 1 month. With few exceptions, the greatest decrease was seen with solutions containing alcohol, i.e. chlorhexidine and isopropyl alcohol. The difference between aqueous and alcoholic storage solutions was also noted for linear dimensional changes. Physiologic saline and chloramine hardly affected the length of the points. The decrease in stiffness may add to the difficulties when handling guttapercha points of small dimensions in curved root canals. From this point of view it is therefore recommended to avoid storage of points in antibacterial solutions. Rather, an effective surface disinfecting of the points immediately prior to use would be desirable. PMID- 3858966 TI - In vivo measurement of bone mineral content of mandibles by dual-photon absorptiometry. AB - The purpose of this study was 1) to reveal the short- and long-term precision of noninvasive in vivo measurements of bone mineral content (BMC) in larger and smaller parts of mandibles and in forearm bones by a new two-dimensional dual photon attenuation system GT45; 2) to develop normal reference values and ranges for mandibular BMC in individuals between 20-40 yr of age without known systemic diseases and with normal oral state, (n = 56, F:M = 1:1), and 3) to relate mandibular BMC with forearm bone BMC, sex and age, by comparing BMC values of a well-defined normal old test group (n = 24, F:M = 1:1, 70-81 yr of age) with the normal reference values. The analyses indicated: 1) the in vivo short- and long term precision of the methods is high. 2) BMC of mandibles and forearm bones is significantly related to sex and age (P less than 0.01, and in mandibles of young females/males: P = 0.02). 3) BMC in mandibles and forearm bones is significantly correlated in both age groups (P less than 0.01) with relatively weak coefficients of correlation. GT45 may be used to follow BMC changes in mandibles in groups or single individuals after surgical treatment and to evaluate sex and age dependent BMC changes in mandibles and forearm bones. PMID- 3858967 TI - Accuracy at radiography and probing for the diagnosis of proximal caries. AB - In 63 teenagers the proximal surfaces of premolars to be extracted for orthodontic reasons and the adjacent surfaces of neighboring teeth, 598 surfaces in all, were examined radiographically and by probing. Direct inspection after extraction revealed that 51% of the surfaces had incipient carious lesions and 5% lesions with cavities. Of the surfaces with cavities 82.1% were correctly diagnosed radiographically if any radiolucency, regardless of its extent, was used as a diagnostic criterion. However, this yielded a false positive rate of 19.6%. If only radiolucencies extending at least into the inner third of the enamel were called positive the true positive rate was 36.7% and the associated false positive rate 1.6%. At a 5% cavity frequency the predictive positive values were 17% and 53%, respectively. Probing yielded a true positive rate of about 29% and a false positive rate of 1.1% with a predictive positive value of 50-57%. All radiolucencies extending into the dentin were associated with cavities. When the most liberal radiographic criterion was used 37.5% of all carious lesions, whether associated with a cavity or not, were detected and 3.8% of sound surfaces were falsely called carious. The corresponding predictive positive value at the actual rate of incipient lesions and lesions with cavities was 92.6%. PMID- 3858968 TI - Symposium on plaque ecology and dental diseases. 23rd-26th August 1984, Oslo. PMID- 3858969 TI - Formation and ecology of plaque at different locations in the mouth. AB - Some recent findings concerning microbial colonization of smooth surfaces of teeth, gingival crevices, occlusal fissures and removable dentures are reviewed considering the many ecologic factors of importance for the oral microbial communities. The oral microbiota is extremely complex comprising at least 200 taxa. In spite of interindividual and site-to-site variations, each oral habitat has a characteristic microbiota ranging from Gram-positive, facultatively anaerobic cocci and rods in occlusal fissures to predominance of Gram-negative, strictly anaerobic rods and spirochetes in deep periodontal pockets. PMID- 3858970 TI - A model for the statistical description of analytical errors occurring in clinical chemical laboratories with time. AB - The main purpose of the present study was to describe the statistical behaviour of daily analytical errors in the dimensions of place and time, providing a statistical basis for realistic estimates of the analytical error, and hence allowing the importance of the error and the relative contributions of its different sources to be re-evaluated. The observation material consists of creatinine and glucose results for control sera measured in daily routine quality control in five laboratories for a period of one year. The observation data were processed and computed by means of an automated data processing system. Graphic representations of time series of daily observations, as well as their means and dispersion limits when grouped over various time intervals, were investigated. For partition of the total variation several two-way analyses of variance were done with laboratory and various time classifications as factors. Pooled sets of observations were tested for normality of distribution and for consistency of variances, and the distribution characteristics of error variation in different categories of place and time were compared. Errors were found from the time series to vary typically between days. Due to irregular fluctuations in general and particular seasonal effects in creatinine, stable estimates of means or of dispersions for errors in individual laboratories could not be easily obtained over short periods of time but only from data sets pooled over long intervals (preferably at least one year). Pooled estimates of proportions of intralaboratory variation were relatively low (less than 33%) when the variation was pooled within days. However, when the variation was pooled over longer intervals this proportion increased considerably, even to a maximum of 89-98% (95 98% in each method category) when an outlying laboratory in glucose was omitted, with a concomitant decrease in the interaction component (representing laboratory dependent variation with time). This indicates that a substantial part of the variation comes from intralaboratory variation with time rather than from constant interlaboratory differences. Normality and consistency of statistical distributions were best achieved in the long-term intralaboratory sets of the data, under which conditions the statistical estimates of error variability were also most characteristic of the individual laboratories rather than necessarily being similar to one another. Mixing of data from different laboratories may give heterogeneous and nonparametric distributions and hence is not advisable.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3858971 TI - Omeprazole. A survey of preclinical data. PMID- 3858972 TI - Acid inhibitory characteristics of omeprazole in man. AB - Single-dose studies in man have shown that omeprazole is a potent inhibitor of acid secretion stimulated by betazole, pentagastrin, modified sham-feeding and peptone. The degree of inhibition is dose-dependent and correlates to the area under the plasma omeprazole concentration-time curve. The duration of action of a single oral dose is 2-3 days and not dependent on a sustained plasma concentration of omeprazole. During repeated once-daily administration the level of acid inhibition increases over the first 5 days, after which it stabilises. With once-daily omeprazole treatment it is possible to almost abolish 24-hour intragastric acidity in the majority of DU patients. PMID- 3858973 TI - Development of an oral formulation of omeprazole. AB - Omeprazole has a low water solubility and is chemically labile in an acid environment. In the formulation of an oral dosage form of omeprazole the possibilities of dissolution rate limited absorption and preabsorption degradation must be kept in mind. A water suspension of omeprazole was tested in a pilot bioavailability study. The suspension was given to six healthy, fasting volunteers on two occasions--together with sodium bicarbonate solution and together with the same volume of water. When the suspension was given with water the bioavailability was reduced by about 50% owing to preabsorption degradation. In another bioavailability study the slowest of three granule formulations with differing in vitro dissolution rates showed a reduced extent of absorption. A controlled-release pellet formulation (enteric-coated) was formulated and tested in a series of bioavailability studies. A single dose given with food resulted in a delayed absorption and possibly lower bioavailability than under fasting conditions. When the granules were given on an empty stomach before the morning meal the length of time between dosage and meal was of no importance. Concomitant administration of a liquid antacid had no influence on the bioavailability of omeprazole. PMID- 3858974 TI - Structure activity relationships of substituted benzimidazoles. AB - The omeprazole molecule consists of three parts, a substituted pyridine ring, a substituted benzimidazole ring and CH2SO chain connecting the 2-positions of these ring systems. All three are essential for the antisecretory effect. In order to maintain a good effect the pyridine ring has to be substituted by alkyl or alkoxy groups, but not in the 6-position. The substituents in the benzimidazole ring are not that important, but substituents with strongly electron withdrawing groups such as NO2 or highly hydrophilic groups such as NHCOCH3 tend to give compounds with low antisecretory effects. PMID- 3858975 TI - Animal pharmacodynamics of omeprazole. A survey of its pharmacological properties in vivo. AB - In the present paper, a collection of experimental data is presented describing the pharmacological profile of omeprazole mainly in dogs and rats. Omeprazole potently inhibited gastric acid secretion in different experimental models. In the dog, for instance, omeprazole was 2-7 times more potent than cimetidine, depending on the route of administration, and in the rat the difference was even greater. Omeprazole was equally potent against different types of stimulation, whereas cimetidine was not, indicating differences in their mechanisms of action. In the dog, the duration of the antisecretory effect was long and lasted for 3-4 days after a single maximal dose of omeprazole. The inhibitory effect after repeated, daily administration of submaximal doses therefore gradually increased and attained a steady-state level after five doses. Treatment up to one year with very high oral doses did not affect the duration of effect. During long-term treatment with high doses of omeprazole a 10-fold increase in meal-stimulated plasma gastrin levels was recorded. This was probably due to a nearly complete inhibition of acid secretion over 24 hours during the study. The gastrin values returned to control levels within eight days after the end of the treatment. Omeprazole was rapidly absorbed (peak plasma levels were reached within one hour) and the elimination half-life was approximately one hour. In the dog, the gastric antisecretory effect was related to the total dose and the area under the plasma concentration curve, whereas the peak level or the shape of the curve was of minor importance. Omeprazole, given orally to rats, dose-dependently prevented experimentally induced gastric lesions. Neither inhibition of acid secretion, stimulation of gastric bicarbonate secretion nor interference with the synthesis of endogenous prostaglandins seems to be of any great importance for the gastric protective effect of omeprazole. Omeprazole seems to be very specific in its gastric acid antisecretory and gastric protective actions since, apart from a decrease in the rate of gastric emptying found after very high oral doses in the rat, no other general pharmacological effects of omeprazole have been observed. Thus, omeprazole was devoid of histamine H2-receptor blocking properties, did not affect the intestinal transport rate, pancreatic secretion, autonomic control of the cardiovascular system or kidney excretion of hydrogen ions. PMID- 3858976 TI - Toxicological studies on omeprazole. AB - As part of the safety evaluation of the gastric antisecretory drug, omeprazole, toxicological studies have been performed in several species of animals. The acute toxicity after oral administration to rodents was low. The oral LD50 value was above 4 g/kg. The general toxicity after repeated administration has been studied in rats and dogs. No clinical signs of adverse reactions were seen. Some minor changes in hematology parameters were observed. In rats and mice decreases in the erythrocyte count, hematocrit and hemoglobin have occasionally been found at doses of 125 mumol/kg/day and more. Hyperplasia of oxyntic mucosal cells, concomitant with increases in stomach weight, oxyntic mucosal thickness and folding, has been observed in the species investigated, the dog, rat and mouse. In addition, slight chief cell atrophy and eosinophilia of the chief cell granules were observed in rats. The oxyntic mucosal effects were reversible upon treatment being discontinued. In the oncogenicity studies, gastric carcinoids occurred in the rat but not in the mouse. Investigations of the carcinoids showed that the vast majority of the endocrine cells could be characterised as ECL cells. The hyperplasia of oxyntic mucosal cells, including hyperplasia of endocrine ECL-cells and development of gastric carcinoids in rats, is attributable to the pronounced hypergastrinemia produced as a secondary effect of almost complete inhibition of acid secretion by the large doses of omeprazole used in the toxicity studies. In agreement with this hypothesis, the hyperplasia of the oxyntic cells was prevented by antrectomy. The reproduction studies performed in rats and rabbits showed no sign of fetal toxicity or teratogenic effect. The results of the short-term mutagenicity tests, Ames test, the micronucleus test in mice and the mouse lymphoma test were all negative. PMID- 3858977 TI - Determination of omeprazole and metabolites in plasma and urine. AB - Omeprazole and three of its metabolites, the sulfone (H 168/66), the sulfide (H 168/22) and the hydroxy metabolite (H 195/80), are determined in plasma and urine by liquid chromatographic methods. The compounds are extracted from the biological sample and the extract is subjected to liquid chromatographic separation, either directly or after evaporation of the organic solvent and dissolution in a polar phase. The effluent from the column is UV-monitored at 302 nm and the quantitative evaluation performed by electronic integrator. Both a method with manual sample work-up and automatic injection and a fully automated system, Technicon FAST-LC, have been employed for the analyses. More than 25 000 samples have been assayed so far by these two methods. PMID- 3858979 TI - Localization of omeprazole and metabolites in the mouse. AB - Omeprazole is a substituted benzimidazole which blocks gastric acid secretion by inhibiting H+K+ATPase. Radioactive omeprazole was given intravenously or orally to mice, and the distribution of the drug was investigated at various intervals by scintillation counting and by autoradiography. The half-life for radioactivity in the stomach was 14 hours versus 30-36 hours in the liver, kidneys and blood. At 16 hours after the drug was given, the radioactivity in the stomach was ten times higher than that in the liver and kidneys, and 100 times that in the blood. Whole-body autoradiography showed sustained high levels of radioactivity only in the gastric mucosa. Light microscopic autoradiographic investigations of the gastric mucosa from mice killed 1 or 16 hours after the drug was given revealed radioactivity in the parietal cells. By electron microscopy of gastric mucosa from the mouse killed 16 hours after omeprazole injection the isotope label was found mainly over the secretory surface and the tubulo-vesicles. At these locations H+K+ATPase has previously been demonstrated, and it is suggested that omeprazole--or its metabolites--binds to this enzyme. PMID- 3858978 TI - Pharmacokinetics and metabolism of omeprazole in animals and man--an overview. AB - The pharmacokinetics of omeprazole have been studied to varying extent in the mouse, rat, dog and in man. The drug is rapidly absorbed in all these species. The systemic availability is relatively high in the dog and in man provided the drug is protected from acidic degradation in the stomach. In man the fraction of the oral dose reaching the systemic circulation was found to increase from an average of 40.3 to 58.2% when the dose was raised from 10 to 40 mg, suggesting some dose-dependency in this parameter. The drug distributes rapidly to extra vascular sites. The volume of distribution, V beta, in man is comparable to the volume of the extracellular water. The penetration into the red cells is low, the ratio between the concentration in whole blood and in plasma being about 0.6. Omeprazole is bound to about 95% to proteins in human plasma. The binding is lower in the dog and rat (90 and 87%, respectively). Omeprazole is eliminated almost completely by metabolism and no unchanged drug has been recovered in the urine in the species studied. Two metabolites, characterised as the sulfone and sulfide of omeprazole, have been identified and quantified in human plasma. The mean elimination half-life in man and in the dog is about 1 hour, whereas half lives in the range of 5 to 15 minutes have been recorded in the mouse. In two studies in man, the mean total body clearance was 880 and 1097 ml X min-1, indicating that omeprazole belongs to the group of high clearance drugs. In the dog, too, the drug appears to be rapidly cleared from the blood, the mean total body clearance being about 10.5 ml X min-1 X kg-1. In the rat and dog, 20 to 30% of an i.v. or oral dose of omeprazole is excreted as metabolites in the urine and the remaining fraction is recovered in the faeces within three days after the administration. In man, the excretion of radioactivity via the kidneys is much more efficient and the recoveries in the excreta are approximately the reverse of those in the rat and dog. In vitro studies with rat liver microsome preparations suggest that omeprazole and cimetidine inhibit cytochrome P-450-mediated metabolic reactions to about the same extent in equimolar concentrations. However, since the molar daily dose of cimetidine will be 25 to 50 times higher than that of omeprazole, the latter might have less influence on the mixed function oxidase system than cimetidine.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3858980 TI - Density distribution of chronic myeloid leukaemia and normal colony-forming cells in diffusion chambers (CFU-D) and agar (CFU-GM). AB - The density distribution in Percoll gradients of clonogenic cells forming colonies in diffusion chambers (CFU-D) or in agar culture (CFU-GM) was studied in chronic myeloid leukaemia (CML). The density distribution of CFU-GM in CML was homogeneous with peaks within 1.058-1.061 g/ml, which is slightly lower than normal. CFU-D, on the other hand, showed heterogeneous distributions both in CML and in normal controls. Two separable populations of CFU-D were recognized, one with the same or lower density than CFU-GM that formed almost exclusively neutrophilic colonies in diffusion chambers, and a second population concentrating in the density range 1.068-1.075 g/ml which primarily formed macrophage colonies. The second population contained colony-forming cells derived from both Fc-receptor positive and Fc-receptor negative precursor cells, suggesting that at least some colonies in diffusion chambers arise from Fc receptor positive granulopoietic cells of intermediate maturity and/or monocytes. The concentration of CFU-D in peripheral blood was increased 40- to 100-fold in 2 patients currently off treatment who had increased WBC counts. PMID- 3858981 TI - Myxoedema in a case of acute myeloid leukaemia. AB - A 42-year-old woman developed myxoedema during the course of acute myeloid leukaemia. The possible association with cytostatic treatment, especially thioguanine, and the role of levothyroxine for the growth of the leukaemic cell mass are discussed. PMID- 3858982 TI - Lactoferrin in plasma measured by an ELISA technique: evidence that plasma lactoferrin is an indicator of neutrophil turnover and bone marrow activity in acute leukaemia. AB - This study describes an ELISA technique with high specificity, sensitivity, accuracy and reproducibility for measurements of plasma lactoferrin. The detection limit was 0.001 microgram/ml and the median value obtained in EDTA plasma from 47 healthy adults was 0.100 microgram/ml (0.05 fractile: 0.046 microgram/ml, 0.95 fractile: 0.257 microgram/ml). The lactoferrin concentration in serum was on the average 2 1/2 times higher than in plasma. The ambient temperature did not influence the plasma concentration during the first 6 h from blood sampling to separation of plasma from the cells. In 8 patients with untreated acute leukaemia plasma lactoferrin was positively correlated to the peripheral neutrophil count. An almost parallel course in plasma lactoferrin and peripheral neutrophil number was observed in 4 patients with AML during chemotherapy. In 2 patients achieving complete remission, plasma lactoferrin increased about 6 d before the concomitant increase in neutrophil count, suggesting plasma lactoferrin as an early predictor of bone marrow regeneration. PMID- 3858983 TI - Factors and inhibitors of blood coagulation and fibrinolysis in acute nonlymphoblastic leukaemia. AB - Factors of coagulation and fibrinolysis have been evaluated in 15 patients with untreated acute nonlymphoblastic leukaemia (ANLL). 10 patients had major bleeding (MB) and 6 had laboratory signs of DIC. 5 patients went into complete remission (CR). Antithrombin III (AT III) was decreased in 7 patients, antiplasmin (AP) in 9, fibronectin (FN) in 6 and factor XIII in 4/12. The ratio between factor VIIIR:Ag and factor VIII:C was over 2.0 in 11 patients, and high values were especially seen in patients with MB and patients with DIC. Spontaneous proteolytic activity, measured with S-2288 was increased in 3 patients who all had MB, and none of whom achieved CR. 2 patients with promyelocytic leukaemia (M3) had low fibrinogen and AP, high FDP and normal AT III, speaking for primary fibrinolysis, which in addition to proteolytic enzymes in the blast cells are important contributing factors regarding MB in ANLL. PMID- 3858984 TI - Quantitation of H+-ions relating to packed erythrocytes in blood from the spleen and the inferior vena cava in rats. PMID- 3858985 TI - A method for quantitation of H+-ion activity relating to packed erythrocytes. PMID- 3858986 TI - Nuclear antigenic structures. PMID- 3858987 TI - Detection of nuclear antigens recognized by human autoantibodies. PMID- 3858988 TI - An investigation into the differential stability of Sm polypeptides using human and murine monoclonal antibodies. PMID- 3858989 TI - Anti-histones. PMID- 3858990 TI - [Meeting of the Swiss Society for Cardiology. Interlaken, 9-10 May 1985. Abstracts]. PMID- 3858991 TI - [53d annual meeting of the Swiss Society for Internal Medicine and annual congress of the Swiss Society for General Medicine. Interlaken, 10-11 May 1985. Abstracts]. PMID- 3858992 TI - [Meeting of the Swiss Society for Hematology. Interlaken, 9-10 May 1985. Abstracts]. PMID- 3858993 TI - [Endothelial pseudotumor (so-called pyogenic granuloma)--a report on 140 cases]. PMID- 3858994 TI - [Mercury vapors in dental practice]. PMID- 3858995 TI - [Caries prophylactic care in the Canton of Basel]. PMID- 3858996 TI - [Statistical study of a long-term follow-up of root canal treatments in 194 radiologically visible periapical lesions]. PMID- 3858997 TI - [Surgical treatment of jaw cysts]. PMID- 3858998 TI - [Little man--what now?]. PMID- 3858999 TI - [Metastatic arthropathy of the temporomandibular joint]. PMID- 3859000 TI - [Symptoms of mandibular dysfunction in children and young people with malocclusion]. PMID- 3859001 TI - [Current questions of systemic and topical fluoride prophylaxis 2 years after the introduction of table salt with 250 mg f/kg]. PMID- 3859002 TI - [Evaluation of the orthopantomogram in orthodontics]. PMID- 3859003 TI - [Variations in the early development of sutures]. PMID- 3859004 TI - Thirty year old caucasian waitress with persistent upper lobe infiltrate of two months duration. PMID- 3859005 TI - South Dakota physician location factors. PMID- 3859006 TI - Reflections on informed consent. PMID- 3859007 TI - Two cases of atypical digital vasospasm. PMID- 3859008 TI - Ruminations upon cerumen: dry vs wet; Indian vs Caucasian. PMID- 3859009 TI - Elderly man with obstructive jaundice of three to four months' duration. PMID- 3859010 TI - Comminuted fractures of the proximal surface of the tibia. PMID- 3859011 TI - Stimulation of bone resorption in vitro by synthetic transforming growth factor alpha. AB - Experiments were conducted to test the hypothesis that tumor-derived transforming growth factor-alpha (TGF-alpha) is responsible for the increased bone resorption and hypercalcemia seen in some malignant diseases. Homogeneous synthetic TGF alpha prepared by the solid-phase synthesis method stimulated bone resorption directly in vitro in a concentration-dependent manner. Incubation times of 72 hours or more were required to stimulate resorption, which is similar to the time course of bone resorption by epidermal growth factor. PMID- 3859012 TI - Thyroid localization of Ga-67 citrate. PMID- 3859014 TI - [Morphological studies on the roots of Japanese mandibular second molars]. PMID- 3859013 TI - [Clinico-pathological studies on medicaments used for vital pulp therapy, with special reference to a calcium hydroxide-camphorated para-monochlorophenol paste]. PMID- 3859015 TI - [Histo-pathological studies of the healing process in the apical wounds of dog teeth]. PMID- 3859016 TI - [Clinical studies of dental plaque and calculus and their relation to periodontal disease and dental caries in children]. PMID- 3859017 TI - Oral malignancy: a regional incidence observed over a 13-year period. AB - In this study slightly more than two out of every 100 biopsy specimens from the set population of 10,414 specimens showed malignant oral lesions. The most common sites for oral malignancy were the floor of the mouth and the alveolar ridge, respectively. Lesions were most common during the fifth decade of life, followed by the sixth. Eighty-eight percent of the malignant lesions occurred in whites and 12% inn blacks. This does not deviate significantly from the percentage in the total biopsies reported. Of the categories of neoplasms, surface ectodermal neoplasms predominated, followed by salivary and mesenchymal lesions, respectively. There did not appear to be a significant difference in sex incidence. PMID- 3859018 TI - Successful treatment of gram-negative bacillary meningitis with imipenem/cilastatin. AB - A patient with meningitis caused by a strain of Actinetobacter anitratus that was resistant to all commercially available antibiotics was treated with imipenem/cilastatin administered intravenously in a dose of 1 gm of imipenem every six hours. The minimal inhibitory concentration of imipenem against the isolate was less than or equal to 0.04 micrograms/ml. The patient tolerated the drug well and was cured after 12 days of therapy. PMID- 3859019 TI - Multipotent mutator strain of mouse teratocarcinoma cells. AB - A mutator strain [AraCr (1.5)4], isolated from mutagenized cultures of multipotent mouse teratocarcinoma cells (embryonal carcinoma stem cells), exhibited a dNTP pool imbalance, with more than a 10-fold relative increase in the intracellular concentration of dCTP. The increase in the spontaneous rate of mutation for 6-thioguanine resistance was 3.6-fold and for ouabain resistance, 7.9-fold. Normalization of the dCTP/dTTP ratio by addition of thymidine and deoxycytidine to the media was associated with normalization of the mutation rates. AraCr (1.5)4 cell retained its multipotency (including chimerization potential) when injected into blastocysts. Moreover, its differentiated progeny expressed the dNTP pool imbalance and mutator phenotype in vitro. The preliminary finding of an increased frequency of morphologically abnormal embryos derived from a series of transplanted blastocysts injected with AraC2 (1.5)4 stem cells is consistent with significant phenotypic effects in vivo. PMID- 3859020 TI - Evidence for indirect involvement of thymidine kinase in excision repair processes in mouse cell lines. AB - Wild-type cells and thymidine kinase-deficient clones from two mouse lymphoma cell lines, P388 and L5178Y, were compared for sensitivity to killing by the mutagens, ultraviolet irradiation (UV), ethyl methane sulfonate (EMS), and N methyl-N'-nitro-N-nitrosoguanidine (MNNG). Two out of three thymidine kinase deficient P388 clones showed significantly enhanced sensitivity to killing by all three mutagens. This increased sensitivity to killing was also reflected in increased mutagenesis by the three mutagens. In the L5178Y cell line, wild-type cells showed little difference to two thymidine kinase-deficient clones in terms of mutagen sensitivity. This indicates that thymidine kinase may be significant for DNA repair processes in P388 but not in L5178Y cells. Unscheduled DNA synthesis (UDS) experiments were carried out on P388 and L5178Y wild-type cells and wild-type Friend leukemia cells (which are mutagen-sensitive when deficient in thymidine kinase). The UDS experiments showed the L5178Y cells were low in excision repair abilities relative to the P388 cells and the Friend cell clone. This indicates that the increased mutagen sensitivity in thymidine kinase deficient P388 and clone 707 Friend cells may be due to thymidine kinase playing an indirect role in DNA excision repair, a process which is of little significance in the L5178Y cell line. PMID- 3859021 TI - Cell fusion and cell agglutination: enhancing effect by a combined use of lectin and polycation. AB - The technique efficient for hybridization of mammalian cells was improved by combining a procedure of cell agglutination of cells pretreated with a combination of lectin and polycation and the procedure of conventional polyethylene glycol (PEG) -induced cell fusion. The agglutinability of cells treated with lectin, polycation, and both of them was tested. The effects of these agglutinogens on the hybridization frequencies of cells were also compared. The appearance rate of hybrid colonies was found to be correlated to the extent of cell agglutination. The pretreatment with a combination of lectin and polycation induced the highest degree of cell agglutination and the highest frequency of resulting hybridization. The enhancing effect by the pretreatment with a combination of these agglutinogens on the hybridization frequency was confirmed through experiments on the crosses of several cell types including nuclear fraction (karyoplast). PMID- 3859022 TI - Assignment of human gene encoding thymidylate synthase to chromosome 18 using interspecific cell hybrids between thymidylate synthase-negative mouse mutant cells and human diploid fibroblasts. AB - We have constructed interspecific somatic cell hybrids between a thymidine auxotrophic mutant cell line of mouse FM3A cells that lacks thymidylate synthase and human diploid fibroblasts derived from a male patient with fragile X-linked mental retardation. Twenty primary hybrid clones were isolated independently, all of which exhibited the thymidine-prototrophic phenotype. Segregation of the hybrid cells in nonselective culture conditions gave rise to thymidine auxotrophic hybrid clones. Both electrophoretic assay of thymidylate synthase activity and karyotype analysis of the segregants revealed a strong correlation between the expression of the human form of the enzyme and the presence of human chromosome 18. Thus, it is concluded that the functional gene for human thymidylate synthase, designated TS, is located on this chromosome. PMID- 3859023 TI - [Induction of remission by sequential treatment with cytosine arabinoside (araC/high dose) and L-asparaginase]. PMID- 3859024 TI - [Association of cutaneous mastocytosis with acute leukemia and adenocarcinoma]. PMID- 3859025 TI - Special design of mouthstick device for a patient with upper extremity bilateral amputations. PMID- 3859026 TI - Critical skills assessment for the treatment of geriatric patients. PMID- 3859027 TI - Dietary pattern and dental caries in 19-year-old adolescents subjected to preventive measures focused on oral hygiene and/or fluorides. AB - Dietary habits and dental caries were analysed in 95 19-year-old Swedish adolescents who had been subjected to different preventive measures during their late teens. A 24-hour recall was used and showed that the intakes of milk and milk products, meat, fish and eggs accorded with recommended norms but not those of vegetables, fruits and berries, and potatoes and root vegetables. Only 6% of the subjects had eaten the recommended three principal meals during the day tested. At the end of the trial, only weak or moderate correlations were found between snacks, including sucrose snacks, and selected clinical variables. Subjects who did not develop new carious lesions during the experimental 2 years had fewer risk factors, defined as the most negative values (quartile limit) for sucrose snack consumption, tooth cleaning score, lactobacillus count, saliva secretion rate and saliva buffer capacity, than those who developed one or more new lesions. During the experimental period, with an overall low caries incidence, no single factor tested for presumed risk was found to be the discriminating factor for occurrence of dental caries. PMID- 3859028 TI - Lustre changes on teeth. The use of laser light for reflexion measurements on the tooth surface--in vivo. AB - Lustre changes on teeth in vivo were studied with the use of equipment based on a helium-neon gas laser. Variations of the intensity of laser light reflected from the tooth surface were measured under different conditions of accumulation and removal of deposits, which were assumed to consist mainly of the pellicle. The possibility of using fluoride varnish as an artificial surface layer in this kind of investigation was also tested but rejected. Measurements were made after toothbrushing with water alone and with two toothpastes possessing different degrees of abrasivity. Teeth that had been left without toothbrushing for 24 hours showed statistically significant (p less than 0.05) lower light reflexion values than those recorded immediately after the teeth had been brushed with a toothpaste. During a period of seven months, persons brushing their teeth with water alone generated lower intensity values than did those brushing with the two toothpastes. The more abrasive paste yielded the highest intensity values, indicating a more polished or cleaner surface. The results suggest that the use of a toothpaste containing abrasives contributes to the cleaning effect of toothbrushing. PMID- 3859029 TI - Accuracy of radiographic caries diagnosis at different kilovoltages and two film speeds. AB - Different kilovoltages (50, 60, 70, 90) and two films differing in speed (Kodak Ultra-Speed and Ektaspeed) were examined with regard to the diagnostic accuracy at detection of dental caries. Ten observers graded the occurrence of caries in radiographs of extracted premolars and their findings were compared with the actual presence or absence of caries. The ROC-technique was used to evaluate the results using the area under the curve as a measure of diagnostic accuracy. A significant difference was found between kilovoltages with better diagnostic accuracy for the lower kilovoltages. No significant difference was found between the two types of film. Our results suggest that a kilovoltage of 60 offers a proper balance between absorbed radiation dose and diagnostic accuracy. The use of Kodak Ektaspeed offers a diagnostic accuracy similar to that of Kodak Ultra Speed. PMID- 3859030 TI - Orthodontic movement of maxillary incisor into the midline. A case report. AB - Orthodontic treatment of a case is presented where an eight year old girl previously had had the upper right central incisor surgically removed because of an odontoma. Orthodontic closure of the space from both sides was performed with fixed appliance, leaving the remaining central incisor in the midline. A retainer was bonded to prevent relapse. PMID- 3859031 TI - [Cancer metastatic to the jaw. II. Radiographic findings in 17 patients]. PMID- 3859032 TI - Ectopic eruption of the maxillary canine resulting in transposition with adjacent teeth. PMID- 3859033 TI - [The relation between colonic cancer and osteomas diagnosed by pantomography]. PMID- 3859034 TI - [The risk of injuries following intraoral radiographic examination]. PMID- 3859035 TI - [Important information from the Ministry of Health]. PMID- 3859036 TI - [Composite dental restorative materials]. PMID- 3859038 TI - [Clinical testing of 2 liquid soaps used in dental practice]. PMID- 3859037 TI - [Acquired immunodeficiency syndrome (AIDS)--literature review and report of 13 patients]. PMID- 3859039 TI - [Excluding daylight in film developing equipment]. PMID- 3859041 TI - [Ectopic eruption of the upper 1st permanent molars]. PMID- 3859040 TI - [Metal-ceramic alloys. A review of alloys to which porcelain is bonded]. PMID- 3859042 TI - [Early approximal decay in permanent teeth. A diagnostic and a therapeutic problem?]. PMID- 3859043 TI - [The effect of preventive dentistry performed by specially trained dental hygienists--a pilot study]. PMID- 3859044 TI - [Clinical occlusal physiology. Attitude among dentists in Norrbotten]. PMID- 3859045 TI - [Orthodontic consultation in public health dentistry]. PMID- 3859046 TI - [Various aspects of the classification, clinical course and diagnosis of monocytoid and histiocytoid hemoblastoses]. AB - Analysis of the reported data and authors' observations (41 patients with monocytoid leukemias and 21 patients with histiocytoses) made it possible to conclude that in most cases, histiocytoses are multifocal tumors with diverse morphological manifestations. A classification of histiocytoid tumors is offered with regard to the process extent, the nature of bone marrow damage, morphological features, the degree of final differentiation of tumor cells, and the clinical and laboratory signs of neoplastic activity. PMID- 3859047 TI - [The enzyme spectrum of the peripheral blood lymphocytes in patients with nonspecific lung diseases]. AB - The data on the activity of the enzymes of xenobiotic metabolism in peripheral blood lymphocytes point to essential disorders within the system of detoxification in patients with bronchopulmonary pathology. The necessity of cultivating cells with mitogens before measurement of the activity of the enzymes of xenobiotic metabolism of the first phase (cytochrome P-450, cytochrome C reductase) for more precise measurement and reproducibility of the results is discussed. Study of the activity of cytosol enzymes of the second phase (glutathione-S-transferase, sulfotransferase) does not require preliminary cell cultivation. The authors emphasize the importance of studying the enzymes of xenobiotic metabolism to individualize the treatment and choose optimal drug doses. PMID- 3859048 TI - Case of the month. Contagious vesicular disease. PMID- 3859049 TI - Council on Public Relations. Why some dentists don't belong to the TDA. PMID- 3859050 TI - Baby in the dentist's chair. PMID- 3859051 TI - Working women--two-thirds of labor force growth. PMID- 3859052 TI - Controlling employee health costs. PMID- 3859053 TI - [Drying with Dry Tips]. PMID- 3859054 TI - HLA polymorphisms in Nigerians. AB - The HLA class I and class II phenotypes of a panel of 114 unrelated Nigerians have been determined. The panel was tested for all the known class I antigens and comparisons of the HLA-A and -B frequencies with those of other African Negroid populations revealed some differences. Only limited comparisons could be made for the HLA-DR and -D frequencies as these are not available for any well-defined African Negroid population. The data concerning the class II antigens of this panel are the most interesting. Half of the DRw11-positive panel members are DQw3 negative and DQw1 positive. In addition, there is dissociation of some HLA-D and DR specificities, a number of panel members are positive for an HLA-D specificity and are negative for the corresponding HLA-DR specificity. Our results show the value of population studies in the investigation of the relationship between the different HLA class II antigens. PMID- 3859055 TI - Study of the HLA gene and antigen frequency from a Saudi Arabian hospital. AB - The HLA-A, -B, -C and DR loci antigen frequencies were determined, respectively, on 1145, 558 and 352 healthy nonrelated Saudi family members. B21, CW4, CW7, and Dr7 showed the highest gene frequencies, of 14.6%, 28.3%, 7.4% and 19.5%, when compared to other populations. Haplotypes A2-B5, A32-B51, A26-B8, A2-B21, A28 B35, Aw19-B21 and B21-CW4 showed the highest frequencies when compared to other populations. Gene frequencies of 14.6% and 20.2% for B21 and Aw19 antigens, respectively, are highest among Middle East populations. Gene frequencies for A1 (10.5%), A2 (24.9%), A3 (8.9%), A9 (16.7%) and A28 (7.9%) are similar to the 10.1%, 24.9%, 8.3%, 16.8% and 7.7%, respectively, reported for the Turkish population. Also, gene frequencies for B5 (18.5%), B21 (14.6%) and B35 (10.2%) are very close to 17.1%, 14.0% and 10.2%, respectively, reported in the Yemenite population. The above results suggest some influence of other populations on the 'pure' Arab population. PMID- 3859056 TI - Lack of association between HLA-DR antigens and dental caries. PMID- 3859057 TI - Expression of arylsulfatase B variant from leukocytes in chronic myelogenous leukemia related to chemotherapy. AB - Lysosomal arylsulfatase B of human leukocytes consisted of two forms; a basic form (B) and a variant form (B1) which is phosphorylated at the carbohydrate chains of the B form (Uehara, Y., Gasa, S., Makita, A., Sakurada, K., and Miyazaki, T. (1983) Cancer Res. 43, 5618-5622). The amounts of the variant form relative to the basic form were considerably increased in leukocytes of chronic myelogenous leukemia (CML). The present communication demonstrates that, upon chemotherapy of the patients with CML, degree of phosphorylation as well as the relative amounts of the phosphorylated variant form of CML leukocytes are markedly decreased concomitantly with an increase of the basic, less phosphorylated form. This effect of chemotherapy on the variant form preceded to clinical improvement of the CML patients, suggesting that the relative amount of the phosphorylated enzyme will be a potential prognostic indicator for the therapeutic effect of CML. PMID- 3859058 TI - [Effect of physical and sugar loads on the dehydrogenase activity of the saliva]. PMID- 3859059 TI - [Effect of fluorine on the enameloblasts in relation to the nonspecific resistance of the body]. PMID- 3859060 TI - [Experimental modeling of cystic formations of the jaws]. PMID- 3859061 TI - [Relations of the shape of the face, jaws, tooth reduction and the incidence of caries]. PMID- 3859062 TI - [Effect of temporary dental splinting on the function of the maxillodental system in periodontal diseases]. PMID- 3859063 TI - [Results of the clinical use of a collagen-containing paste for filling root canals]. PMID- 3859064 TI - [Dynamic assessment of the reactivity of the body in patients with maxillofacial phlegmons]. PMID- 3859065 TI - [Characteristics of the blood supply and oxygenation of the skin in maxillofacial phlegmon]. PMID- 3859066 TI - [The healing of suppurative wounds of the maxillofacial area in the middle-aged and elderly]. PMID- 3859067 TI - [Clinical and functional evaluation of the results of contour mandibuloplasty using a silicone implant]. PMID- 3859068 TI - [Treatment of malignant tumors of the skin of the face and head by a cryogenic method]. PMID- 3859069 TI - [Endoscopic study of the components of palatopharyngeal closure]. PMID- 3859070 TI - [Interpretation of electromyography data on the principal masticatory muscles]. PMID- 3859071 TI - [Clinical x-ray characteristics of chondrosarcoma of the facial skeleton]. PMID- 3859072 TI - [Treatment experience with facial burns]. PMID- 3859073 TI - [Blood supply and oxygen regimen of the mucoperiosteal flap before and after an operation for segmental osteotomy of the frontal section of the maxilla]. PMID- 3859074 TI - [Interrelation in the humoral link of local and general immunity in maxillofacial actinomycosis]. PMID- 3859075 TI - [Interrelation between the outcome of a mandibular fracture and the mental status of the patient]. PMID- 3859076 TI - [Maxillodental function in acromegaly patients]. PMID- 3859077 TI - [ELimination of dental crown defects with inlays]. PMID- 3859078 TI - [Clinical evaluation of the effectiveness of the protective coating for a tooth prepared for an artificial crown]. PMID- 3859079 TI - [Pathogenetic factors of the distal mandibular position in children during the period of changing bite]. PMID- 3859080 TI - [Role of medical gymnastics and massage in the combined treatment of children with congenital cleft lip and palate]. PMID- 3859081 TI - [Method for surgically treating mandibular odontogenic cysts in children]. PMID- 3859082 TI - [Age correlations of the content of basic bone tissue components in the human mandible]. PMID- 3859083 TI - [The state of the oral cavity and the need for treatment of the inhabitants of Khabarovsk Territory]. PMID- 3859084 TI - [Characteristics of the use of composites. Potential errors and their prevention]. PMID- 3859085 TI - [Esthetic properties of composite filling materials]. PMID- 3859086 TI - [Treatment of pulpitis by using intrapulpar anesthesia]. PMID- 3859087 TI - [Method for conducting seminar classes with interns on therapeutic dentistry]. PMID- 3859088 TI - [Results of research on the mechanisms of tooth resistance]. PMID- 3859090 TI - [Recommendations for the prospective outlining of dental care strategies]. PMID- 3859089 TI - [Morphofunctional relationships of myons and blood capillaries in the normal masticatory muscle and in the immobilized mandible]. PMID- 3859091 TI - [Problems in pulpitis therapy]. PMID- 3859092 TI - [Health policy aspects of the collaboration of the GDR with the World Health Organization (WHO) with special reference to the "International Collaborative Study of Dental Manpower Systems"]. PMID- 3859093 TI - [International Collaborative Study of Dental Manpower Systems--concerns and targets]. PMID- 3859094 TI - [The Leipzig ICS-I-Study. Dental care and selection of the random sample]. PMID- 3859095 TI - [The Leipzig ICS-I study. Method and organization of the epidemiological and sociological studies]. PMID- 3859096 TI - [The Leipzig ICS-I study. Oral health status of specially selected groups]. PMID- 3859097 TI - [The Leipzig ICS-I study. International comparison of the oral health status of specially selected groups]. PMID- 3859098 TI - [The Leipzig ICS-I study. Sociological aspects and evaluations of the ICS-I study]. PMID- 3859099 TI - [Various resuscitation aspects of extrapulmonary membrane oxygenation]. PMID- 3859100 TI - Midline granuloma. PMID- 3859101 TI - Percutaneous thin needle cholangiography. PMID- 3859102 TI - Acute volvulus of the transverse colon: report of an unusual case. PMID- 3859103 TI - [Current status of conservative therapy of extrapyramidal movement disorders in childhood and adolescence]. PMID- 3859105 TI - A method of computer system implementation. PMID- 3859104 TI - Interactions between muzolimine, PgE2 and the renin-angiotensin-aldosterone system. AB - The aim of our study was to determine the possible interrelation between muzolimine and the renal PG and renin-angiotensin systems by direct assay of these renal hormones. 4 groups of five rats were subdivided as follows: Group 1: controls; Group 2: rats treated with muzolimine (100 mg/kg); Group 3: rats treated with indomethacin (4 mg/kg); Group 4: rats treated with both muzolimine and indomethacin. After 3 days, the rats were transferred to metabolic cages, urine and plasma samples were taken on the 4th day and the following parameters assayed: Urine: creatinine, Na+, PGE2. Plasma: PRA and aldosterone. RESULTS AND CONCLUSIONS: Muzolimine: 1) increase PRA (11.8 +/- 1.06 vs. 8.66 +/- 1.56 AI ng/ml/h - p less than 0.01) and 2) increases PGE2 release (7.08 +/- 3.22 vs. 0.6 +/- 0.19 micrograms/mg urine creatinine - p less than 0.005). PG synthesis inhibition (indomethacin) lowers (0.118 +/- 0.056 mmol Na+/mg urine creatinine of group 2 vs 0.043 +/- 0.019 mmol Na+/mg urine creatinine of group 4 - p less than 0.025) although not completely abolishes (0.043 +/- 0.019 nmol Na+/mg urine creatinine of group 4 vs. 0.019 +/- 0.006 mmol Na+/mg of group 3 - p less than 0.05) the natriuretic effect of muzolimine. This suggests that the natriuretic activity of the drug, at least in part, depends on PGE2 production. PMID- 3859106 TI - Music in dental surgery: toward a renewed interest. PMID- 3859107 TI - Impact of nutrition on dental health in a changing environment. PMID- 3859108 TI - [Oral health in the Federal Republic of Germany]. PMID- 3859109 TI - [Clinical function status]. PMID- 3859110 TI - [Prevention concepts for various patient groups]. PMID- 3859111 TI - [Preventive measures in childhood]. PMID- 3859112 TI - [Pathogen spectrum and resistance aspects in abscesses in small spaces]. PMID- 3859113 TI - [Lateral open bite]. PMID- 3859114 TI - [Fear of the dentist or the correct approach with children]. PMID- 3859115 TI - [Beginning treatment in orthodontics]. PMID- 3859116 TI - [Caries prevention by raising the pH levels in the dental plaque during the intake of cariogenic carbohydrates]. PMID- 3859117 TI - Phenol sulphotransferase: purification and characterization of the rat kidney and stomach enzymes. AB - 3'-Phosphoadenosine-5'-phosphosulphate-dependent enzymes that catalyse sulphation of p-nitrophenol have been purified from rat kidney and stomach mucosa by affinity chromatography on the p-hydroxyphenylacetic acid-agarose conjugate, by chromatography on DEAE-cellulose and Sephadex G-100. The phenol sulphotransferase (PST) from rat kidney had Mr of 69 000 and that of the stomach enzyme was 32 000. With p-nitrophenol as the sulphate acceptor, the pH optima were 6.4 for the stomach PST and 5.4 and 6.6 for the kidney enzyme. Both enzymes were inhibited by 2,6-dichloro-4-nitrophenol and phenylglyoxal, an arginine specific modifying reagent. Both enzymes readily sulphated p-nitrophenol, 2-naphthol, 1-naphthol and salicylamide and did not act on biogenic amines (e.g. epinephrine, norepinephrine, dopamine, serotonin), acid metabolites of catecholamines (e.g. 3,4-dihydroxyphenylacetic acid, homovanillic acid), and O-methylated metabolites of catecholamines. Only the stomach enzyme sulphated such catecholamine metabolites as homovanillic alcohol and 3-methoxy-4-hydroxyphenylglycol. In contrast to the brain enzyme, but similarly to the liver enzyme, the kidney and stomach phenol sulphotransferases appear to sulphate exogenous phenolic substrates in preference to potential endogenous substrates. PMID- 3859118 TI - Electron microscopy in cytology. PMID- 3859119 TI - On the presentation of papers at medical meetings. A critique. PMID- 3859120 TI - The ultrastructure of metastatic adenocarcinoma in serous fluids. An aid in identification of the primary site of the neoplasm. AB - Identification of the primary sites of metastatic adenocarcinomas is a diagnostic problem, particularly in cases of occult primary neoplasms. We studied the ultrastructural morphology of 16 metastatic adenocarcinomas that presented as effusions to establish organ-specific features that would characterize adenocarcinomas from various sites. The nine cases in which the site of the primary carcinoma was known included seven derived from the breast, one from the ovary and one from the colon. The primary site was unknown in seven cases at the time of presentation. After investigations, the primary site became known in five cases (lung, colon and appendix, one case each, and the ovary in two cases). Ultrastructurally diagnostic features could be detected in gastrointestinal, ovarian, bronchioloalveolar-cell and breast carcinomas. In gastrointestinal carcinomas, the presence of short microvilli with long rootlets was specific for the group. The lamellar inclusions of type II pneumocytes were diagnostic of bronchioloalveolar-cell carcinoma. The microvilli in ovarian carcinomas were long, slender and bushy, as in mesotheliomas; however, the cells lacked the perinuclear condensation of tonofilaments seen in the latter. Breast carcinomas were associated with numerous intracytoplasmic lumina, electron-dense granules and aggregates of small vesicular bodies. We conclude that ultrastructural examination of adenocarcinomas in serious fluids can help to identify the primary site of certain neoplasms or at least shorten the list of possibilities. This may reduce costs and minimize the discomfort patients have to undergo by curtailing extensive invasive investigations in search of unknown primary neoplasms. PMID- 3859121 TI - The distinction of mesothelioma from adenocarcinoma in malignant effusions by electron microscopy. AB - To determine the usefulness of the electron microscopic (EM) differential diagnosis between malignant mesothelioma and metastatic adenocarcinoma in cytologic specimens of serous fluids, we undertook a prospective study of 17 pleural and peritoneal effusions from 14 patients. In the nine effusions identified as malignant by routine cytologic examination, EM correctly diagnosed three mesotheliomas and six adenocarcinomas. EM resolved the differential diagnosis of mesothelioma versus adenocarcinoma in three cases in which routine cytologic examination could not. As with tissue specimens, EM cannot be used to diagnose the malignancy of cytologic specimens; it can, however, reliably identify the origin of cells diagnosed as malignant by routine cytologic examination. We conclude that, when EM is used to evaluate cytologically malignant effusions, it can accurately distinguish mesothelioma from adenocarcinoma. This technique will be diagnostically useful in selected cases and may be helpful in avoiding more invasive procedures as well as delays in diagnosis and therapy. PMID- 3859122 TI - Ultrastructural studies of cells in body cavity effusions. AB - Transmission electron microscopic examination of benign (16 cases) and malignant (2 cases) mesothelial cells and metastatic carcinoma (10 cases) was performed. These studies showed long, slender, branching and bushy microvilli with high length-to-diameter ratios to be the most important distinguishing features of the mesothelial cells. Cytoplasmic intermediate filaments were present in all mesothelial cells as well as in carcinoma cells. The mesothelial cells showed an absence of mucin vacuoles, intracellular lumens and luminal tight junctions, which are seen in adenocarcinoma cells. The pinocytotic vesicles were found to be more numerous in the mesothelial cells. Lipid vacuoles, lysosomes, Golgi apparatus and intercellular lumens appeared to be variably present in all mesothelial and carcinoma cells. The methodology is discussed and pertinent literature reviewed. PMID- 3859123 TI - Colorectal cytology in chronic ulcerative colitis. AB - During a period of ten years, 109 colorectal cytology specimens were obtained from 41 patients with chronic ulcerative colitis. There were 28 male and 13 female patients, whose average age was 45 years. All patients were symptomatic and had ulcerative colitis with repeated attacks of profuse diarrhea on the average for 12 years prior to their first cytologic examination. Eight cytology specimens were positive for malignant cells, 35 had atypia, 58 were negative and 8 were unsatisfactory. The malignant cells showed marked anisocytosis, pleomorphism and nuclear hyperchromasia and appeared in loosely cohesive clusters or in single forms in an inflammatory and necrotic background. Subsequent colectomy revealed invasive carcinoma in five patients and carcinoma in situ in two. Smears that were negative or showed atypia contained abundant chronic inflammatory cells. The atypical colonic epithelial cells contained prominent nuclei and formed cohesive clusters. Surgical biopsy and/or segmental resection revealed the presence of polyps, pseudopolyps, polypoid hyperplasia, mucosal atypia and crypt abscesses in patients with atypical and negative cytologic findings. It is concluded that cytologic examination of the colon can play an important role in the examination of patients with ulcerative colitis and allows for the detection of malignant transformation of the colonic mucosa. PMID- 3859124 TI - Cytodiagnosis of in situ and early carcinoma of the upper gastrointestinal tract. AB - Three cases of adenocarcinoma of the stomach, two in situ and one superficially invasive, and one of superficially invasive squamous-cell carcinoma of the esophagus are presented to illustrate the problems encountered in the diagnosis of early lesions of the upper gastrointestinal (GI) tract and the contribution that cytodiagnosis can make. The symptomology and roentgenographic findings in these cases were largely nonspecific. While endoscopic biopsies were repeatedly negative in three of the four cases, endoscopic brushing cytology consistently indicated the presence of a malignancy. Surgery was finally performed on the basis of the cytologic findings, confirming the presence of early malignancy. The cytologic findings, with histologic correlations, are presented in an effort to define some specific criteria for the diagnosis of early malignancy of the upper GI tract. PMID- 3859125 TI - Cytodiagnosis of malignant lesions in cerebrospinal fluid. Review and cytohistologic correlation. AB - In an evaluation of the efficacy of cerebrospinal fluid (CSF) examination in our laboratory, 1,635 CSF specimens received between March 1, 1975, and December 31, 1982, were reviewed. All 111 positive samples (from 77 cases) and all 141 suspicious samples (from 83 cases) were reviewed microscopically, and the clinical records in the cases were rechecked. The 77 positive cases were confirmed by tissue and other studies: 23 as primary brain tumors, 26 as secondary carcinomas, 14 as leukemias, 12 as lymphomas and 2 as multiple myelomas. The 83 suspicious cases were similarly confirmed: 31 as primary brain tumors, 14 as secondary carcinomas, 22 as leukemias and 7 as lymphomas-with 9 found to be "benign." There were no false positives in the positive group. This study suggests that the identification of malignant cells in CSF samples constitutes a reliable method of diagnosis and lessens the need for further biopsies. PMID- 3859126 TI - Unusual presentations of inflammatory conditions in cerebrospinal fluid. AB - Unusual inflammatory reactions in cerebrospinal fluid (CSF) in five patients were explicable by the type of intracranial injury or surgical intervention that they had received or by their basic disease process. Lumbar puncture fluid from a 64 year-old man with multiple facial fractures contained neutrophils, bacteria, Candida sp. and ciliated columnar cells, findings consistent with a basilar skull fracture allowing paranasal sinus contents to enter the subarachnoid space. A 59 year-old man with angioimmunoblastic lymphadenopathy developed meningitis and suffered a respiratory arrest; a ventricular fluid contained acute inflammatory cells as well as numerous corpora amylacea. Lumbar CSF obtained during surgery from a 26-year-old man with a pontine glioma contained numerous histiocytes clustered around polarizable filaments, probably strands of gauze introduced during surgery. A specimen of CSF obtained intraoperatively from a 54-year-old man with an acoustic neuroma undergoing a second craniotomy contained multinucleated giant cells bearing suture material. A 19-year-old girl with systemic sarcoidosis had noncaseating granulomas in the right temporal lobe and multinucleated giant cells in her CSF. PMID- 3859127 TI - Glassy-cell carcinoma of the uterine cervix. Cytopathologic and histopathologic study of five cases. AB - The cytopathologic and histopathologic findings are presented for five cases of glassy-cell carcinoma. The cytology was characterized by tumor cells arranged predominantly in syncytial-like aggregates. The cells had moderate amounts of amphophilic cytoplasm, which was often finely granular. The nuclei were relatively large and had predominantly finely granular chromatin, with prominent nucleoli in about half of the nuclei. A tumor diathesis was present in three cases. Cytologically, glassy-cell carcinoma is most likely to be confused with large-cell nonkeratinizing carcinoma and with atypical reparative cells. Histologically, it was characterized by cells with moderate amounts of finely granular cytoplasm, well-defined cytoplasmic boundaries, vesicular nuclei and large nucleoli. Although this tumor has an alleged aggressive clinical behavior and lack of response to therapy, two of the patients survived for more than ten years. More cases need to be studied in order to ascertain whether this neoplasm is a variant of cervical carcinoma with a distinct morphology and clinical course or is just a pattern of cervical adenocarcinoma, as has been suggested. PMID- 3859128 TI - Peritoneal washings in ovarian tumors. Potential sources of error in cytologic diagnosis. AB - Peritoneal washings were performed on 48 patients with suspected or known ovarian carcinoma. The procedure was part of the initial surgical staging in 27 patients with presumed stage I and II ovarian cancer and was performed during second-look operations in 21 other cases with proven ovarian malignancy. This paper presents the microscopic features of the washings, with particular emphasis on the cytologic differentiation between benign and malignant findings outside of the ovary. Thirty-four cases showed benign or reactive mesothelial cells and no evidence of peritoneal disease. The washings of six patient showed malignant cells, which were confirmed histologically. Notable atypia that mimicked ovarian carcinoma was found in eight patients who had benign or borderline lesions. These findings included papillary and glandlike epithelial structures, with varying degrees of cellular atypia and psammoma bodies. The histologic counterparts of these atypicalities were Mullerian inclusions, mesothelial proliferations and borderline serous tumors. The differential diagnosis between these entities is essential because false-positive cytologic diagnoses may alter postoperative treatment in some patients. PMID- 3859129 TI - Histiocytes and the detection of endometrial adenocarcinoma. AB - Histiocytes have long been recognized as part of the milieu of endometrial carcinoma in gynecologic smears. In an effort to determine whether a quantitative assessment of histiocytes, especially in the absence of endometrial cells, could increase the effectiveness of the cervicovaginal smear for diagnosis of endometrial carcinoma, smears obtained prior to a tissue diagnosis of endometrial adenocarcinoma were evaluated from 44 postmenopausal women. Smears from 97 age matched patients in the same clinic were also evaluated and used as a control group for the endometrial carcinoma patients. All smears were evaluated for the presence of histiocytes and for the presence of benign or malignant endometrial cells, with the histiocytes quantitated as minimal (less than 5 per high-power field [HPF]), moderate (5 to 10/HPF) or heavy (greater than 10/HPF). Sensitivity and specificity were calculated to assess the role of histiocytes in the presence and in the absence of endometrial cells using cytologic findings. Our data indicate that the presence of moderate or heavy numbers of histiocytes on cervicovaginal smears of postmenopausal women increased the cytologic sensitivity from 61% to 82% when considered a marker of disease along with endometrial cells. These results suggest that attention to the presence of histiocytes on cervicovaginal smears may increase the utility of cytology for the diagnosis of endometrial lesions and may be a useful guideline for the cancer-related gynecologic examination. PMID- 3859130 TI - Relationship between the diagnosis of epithelial abnormalities and the composition of cervical smears. AB - The significance of endocervical columnar cells as a high-quality parameter of cervical smears was studied. In a cohort of women with two successive screenings, the consistency of the cellular composition of the cervical smears and the relation between the cellular composition of the smears and the frequency of the diagnosis of abnormal epithelial changes was investigated. At the first screening, a significantly higher number of epithelial abnormalities was found in smears with endocervical columnar cells than in smears without endocervical columnar cells. A significantly higher number of abnormal epithelial changes was found on the second screening in smears from women whose smears from the first screening did not contain endocervical columnar cells than in smears from women whose smears from the first screening did contain endocervical columnar cells. The presence of endocervical cells should be considered a very important indicator of the quality of cervical smears. The chance of missing an abnormal epithelial change is increased in smears without endocervical columnar cells. When endocervical columnar cells are absent, the smear should be considered to be of unreliable quality and a repeat smear should be taken after a short interval, unless the absence of columnar cells can be satisfactorily explained. PMID- 3859131 TI - Cervical intraepithelial neoplasia III. An estimate of screening error rates and optimal screening interval. AB - The detection rates of grade III cervical intraepithelial neoplasia (CIN III) in women at the initial and subsequent screenings were studied in Florence for the period 1979 to 1982 to assess the optimal interval between tests and the sensitivity of the screening (cytology plus advised colposcopy in cases with slightly abnormal Papanicolaou tests). The protective interval was calculated to be about three years. No differences in the risk of developing CIN III were observed between women with only an initial screening and women rescreened within the three-year interval. Screening sensitivity was calculated according to two different models: (1) when assumed to be a constant, the sensitivity of our cytologic-colposcopic screening was 0.71, with 0.64 for cytology alone; (2) when assumed to decrease in subsequent screening rounds, the sensitivity was calculated at 0.60 (0.50 in subsequent rounds), with 0.52 for cytology alone. The benefit of an early cytologic rescreening is discussed and compared to a wider use of colposcopy, which, with lower costs, permits a good sensitivity utilizing only one round of screening. PMID- 3859132 TI - Cervical intraepithelial neoplasia and associated condylomatous lesions. A preliminary report on 4,764 women from Northern Israel. AB - During the period spanning the years 1973 to 1981, 4,764 women visited the Gynecology Out-Patient Clinics and Colposcopy Unit of the Nahariyya Hospital to be examined colposcopically and cytologically (and histologically whenever indicated) for precancerous and cancerous lesions of the cervix. Of these women, 2,614 (55%) were referred because of symptoms of cervical pathology and 2,150 (45%) for other (prophylactic) reasons. The subdivision of all women according to their demographic backgrounds afforded a comparison of the findings in Israeli born Jewesses with those of foreign-born Jewesses and non-Jewish females living in the same geographic area of the Western Galilee district of Israel. Despite the low prevalence of cervical cancer in Jewesses throughout the world, the preliminary report of our pilot study demonstrated that the percentage rates of all degrees of dysplasia/cervical intraepithelial neoplasia (CIN I, II and III) of the uterine cervix of Israeli-born Jewesses was 5.4% in patients with cervical pathology and 3.24% in noncervical-pathology patients. These rates were the highest recorded for any of the demographic groups: 2.06% and 0.33%, respectively, in Moslem women; 1.23% in Christian women with cervical pathology; 2.38% and 1.78%, respectively, in European/American-born Jewesses; and 1.63% and 0.48%, respectively, in Asian/African-born Jewesses. The highest proportion of CIN lesions occurred in the 15- to 30-year-old age groups. Of 100 CIN lesions found in all patients, 45 were cytohistologically associated with the cells of condylomatous lesions. Of 36 patients in whom cervical squamous-cell carcinoma lesions were detected, 18 (50%) were staged (FIGO) as carcinoma in situ (stage 0); the remainder were in stages IA, IB, IIA and IIB, with none in stages III or IV. PMID- 3859133 TI - Mass cytologic screening for cervical carcinoma in China. A review of 7,735,057 reported cases. AB - A review was made of cervical carcinoma screening in 7,735,057 cases based on 140 reports from 25 provinces and autonomous regions in the People's Republic of China. The average prevalence rate of carcinoma of the cervix was 138.74/10(5); the rate was higher in the mountainous districts, and was related to the early age of marriage, the number of children delivered and the existence of cervical lesions. Proper preventive measures imposed by the government, early detection and early treatment have brought about a marked decline of the prevalence and mortality rates. The repeated mass cytologic screenings have made radical cure of this disease possible. Concurrent geographic clustering of carcinomas of both the cervix and penis have been noted, and screening of spouses has been started. PMID- 3859134 TI - Carpet beetle larval parts in cervical cytology specimens. AB - Hairs from carpet beetle larvae were demonstrated in 77 vaginal or cervical smears over a 36-month period. A morphologic description of these structures is presented, and studies of possible sources of contamination are presented and discussed. In some cases, contamination apparently occurred during the taking of the smears through the use of contaminated cotton swabs or wooden spatulas. Other possible sources of contamination include tampons. PMID- 3859135 TI - Cytologic phenomena accompanying uterine cervix electrocoagulation. AB - In the study of cellular and tissue response to electrocoagulation of the uterine cervix, two cytologic phenomena accompanying the delayed healing process were described: the "contact-developed lucid cell" and the "regression field," which were limited to smear samples exhibiting the transitory appearance of abnormal cells after electrocoagulation. While "contact-developed lucid cells," which were firmly attached to abnormal target cell nuclei in a "cell-in-a-cell" pattern, had a variable effect upon subsequent smear scores, the "regression field," which is similar to that described by others during immunologic rejection of kidney transplants, was consistently followed by a shift of the smear score from the dysplasia range to the normal range. We suggest that abnormal cells differentiated during the healing process as well as those present both before and after treatment are subject to an immune rejection induced by uterine cervical electrocoagulation. PMID- 3859136 TI - Incidence of herpes infection of the uterine cervix observed in cytologic specimens in the Tokyo metropolitan area. AB - In a high-volume cytology laboratory in the metropolitan Tokyo area, the incidence of cytologically diagnosed herpes infection in cervical scraping smears of the female genital tract was studied according to the year-by-year changes, age distribution, seasonal variation and types of cytologic alteration. The overall incidence over the 12 years studied was 0.007% (87 cases among 1,230,773 examined). The incidence varied from 0.003% to 0.005% in the early 1970s (except for 1973) and increased to 0.011% in the last three years (1980 to 1982). A large increase was noted in younger age groups in comparison with middle and older age groups. There was a tendency for the infection rate to be higher in the spring (0.011%) and lower in the fall (0.005%). Multinucleation and a ground-glass appearance were observed in the infected cells in almost every case while eosinophilic inclusion bodies were found in 20.7% of the cases. PMID- 3859137 TI - Cytologic diagnosis of primary tubal cancer. AB - A study was made of the 128 cases of primary tubal cancer reported to date in Japan, especially of the 61 cases with a preoperative cytologic examination, which was positive for malignancy in 28 cases (45.9%). A positive cytologic diagnosis was made on the cervicovaginal smear in 37.9% of the 58 cases so examined and on the endometrial smear in 80.0% of the 15 cases so examined. Of the 12 cases with positive endocervical smear cytologies, 11 were without endometrial invasion and 4 had no cancer cells in the cervicovaginal smear. Histologic examination of endometrial curettage specimens was positive for cancer in 8 (23.5%) of 34 cases so examined. Endometrial invasion by cancer cells was seen in 11.1% of the surgically extirpated endometrial specimens. The results of this study suggest that cytologic diagnosis is one of the most reliable methods for detecting primary tubal cancer before a surgical operation is undertaken. Its efficacy might be improved by more careful sampling and study in patients suspected of having primary tubal cancer. PMID- 3859139 TI - Diagnosis and typing of lung carcinomas by cytopathologic methods. A review of 108 cases. AB - A correlative review was made of the type of cytology specimens (sputum, bronchial washing and bronchial brushing) together with the corresponding histopathologic specimens of 108 patients. One hundred patients had primary pulmonary carcinomas diagnosed histopathologically (84) or clinically (16); 5 had carcinomas metastatic to the lungs and 3 had apparently false-positive cytologic results for lung cancer. The correlative review was used to determine the diagnostic reliability of pulmonary cytopathologic techniques in the detection and classification of lung carcinomas (i.e., the sensitivity and accuracy). The overall sensitivities of sputum, bronchial washing and bronchial brushing cytology were 60%, 66% and 77%, respectively (p less than 0.05). Bronchial brushing had a higher sensitivity (80%) for peripheral and metastatic lesions than did sputum (37%) or bronchial washing (60%). The overall accuracies of sputum, bronchial washing and bronchial brushing cytology were 79%, 75% and 76%, respectively, which is not statistically different. Regardless of the sampling methods, cytologic typing of squamous-cell and small-cell carcinomas was highly accurate but was less satisfactory for the other types of lung carcinomas. In the 16 cases in which endoscopic biopsies were either not attempted or gave negative results, one or more pulmonary cytologic specimens showed malignant cells. It is concluded that: (1) pulmonary cytopathologic techniques have excellent sensitivity and accuracy in the diagnosis of lung carcinomas; (2) they may establish the diagnosis of pulmonary carcinomas when endoscopic biopsies give negative results; and (3) they are particularly helpful in cases in which endoscopic biopsies suffer from a low yield (peripheral lesions) or create a considerable danger to the patients (iatrogenic hemorrhage). PMID- 3859138 TI - The application of visual cell profiles in the study of premalignant atypias in sputum. AB - Because the diagnosis of squamous-cell carcinoma of the lung by routine cytologic screening of sputum is often inconclusive, our laboratory is studying the use of cytomorphologic profiles as a reliable diagnostic aid. This study reports the analysis of the profiles of 75 subjects, both cigarette-smoking volunteers and hospitalized patients suspect for lung cancer. Twenty-five of the subjects had been classified as having squamous metaplasia, 25 as having atypias and 25 as having squamous-cell carcinoma. Four slides were made for each subject, with 100 random fields viewed on each slide. The frequency of free alveolar macrophages, metaplastic squamous cells, epithelial atypical cells and malignant squamous cells were noted for each field. The results indicated that, although there were large differences between individual profiles within each diagnostic category, there were significant differences between the average profiles for each diagnostic category. Furthermore, although there were differences in cell frequencies from slide to slide and within slides, the differences were constant across diagnostic categories. The results are supportive of the progressive atypia hypothesis for squamous-cell carcinoma of the lung and provide a baseline for comparison with subsequent individual profiles. PMID- 3859140 TI - Needle biopsy of the liver for the diagnosis of nonneoplastic liver diseases. AB - The results of 209 liver biopsy needle washings were compared with the corresponding histologic findings. An effort was made to distinguish major categories of liver disease on the basis of cytologic findings. Pigment identification and fat quantitation were also evaluated. It was found that it was often possible to determine whether a liver needle washing was normal or abnormal; however, it was rarely possible to provide specific diagnoses. Pure fatty change and primary cholestasis could be reliably differentiated from the steatosis and bile plugging seen in other liver disorders. Cirrhosis could be suggested in a limited number of cases, although in most cases the findings were nonspecific. Cytology was found to be less reliable than biopsy in the discrimination between the major pigments. Finally, cytology was an acceptable method for detecting and quantitating fatty change. PMID- 3859141 TI - Pemphigus vulgaris and microinvasive squamous-cell carcinoma of the uterine cervix. AB - Although patients with disseminated pemphigus vulgaris may have involvement of the uterine cervix, such involvement is often detected only after vaginal discharge or bleeding. When a cervical smear is obtained, distinctive cytologic abnormalities may be observed; these may be attributed to the changes of pemphigus or to an associated reparative/inflammatory reaction. This study documents the first two cases of microinvasive squamous-cell carcinoma of the uterine cervix developing in association with uterine cervical pemphigus. The gross pathologic, cytologic and histologic features of these lesions are illustrated. The cytologic criteria that may be helpful in distinguishing between cells derived from microinvasive squamous-cell carcinoma and pemphigus of the uterine cervix are described. PMID- 3859142 TI - Superficial endometrial involvement by cervical intraepithelial neoplasia detected by intrauterine cytology. A case report. AB - A case of cervical carcinoma in situ with superficial spread to the endometrium is presented. The role of endometrial cytology in the diagnosis of such neoplastic diffusion spread is emphasized. PMID- 3859143 TI - Fine needle aspiration cytology of the breast. A review of 321 cases with statistical evaluation. AB - To assess the accuracy of fine needle aspirations of the breast performed at our institution, all patients undergoing this procedure between the years 1973 and 1982 were evaluated. Correlation was made between the cytologic and histologic diagnoses whenever possible. Correlations were made with mammography results or clinical impressions when biopsies were not obtained. Our results for sensitivity, specificity, predictive value of a positive diagnosis and predictive value of a negative diagnosis were 65.0%, 100%, 100% and 89.6%, respectively. The data indicate that when adequate, well-prepared samples are submitted to the laboratory, accurate cytologic diagnoses can be made. The high specificity and predictive value of a positive result allow for the early diagnosis, treatment and management of breast cancer. PMID- 3859144 TI - Cytology of fine needle aspiration biopsy of primary breast rhabdomyosarcoma in an adolescent girl. AB - A bilateral breast tumor in an 11-year-old girl was diagnosed as a malignant mesenchymal neoplasm by fine needle aspiration biopsy, and its muscular origin was suggested. An immunoperoxidase stain for the demonstration of intracellular myoglobin in destained cytologic aspirates exhibited a positive reaction of variable intensity in some of the undifferentiated round cells and in the more mature bipolar sarcomatous elements. These findings were confirmed in the histologic sections of the excised tissue. Needle aspiration is helpful in these rare cases of primary breast rhabdomyosarcoma, which often present with a solid, undifferentiated histologic pattern in this age group. In addition to the cytologic characteristics, the possibility of detecting muscle antigens as markers for these embryonal small cells, even in previously stained slides, provides a successful method for defining the specific type of sarcoma. PMID- 3859145 TI - Metastatic spindle-cell carcinoma. Cytologic features and differential diagnosis. AB - Fine needle aspiration biopsies of tumors can yield a variety of spindle cells derived from several types of neoplasms. Among these is a rare lesion known as a "spindle-cell carcinoma" or "pseudosarcoma," which may represent a transformation of a preexisting squamous-cell carcinoma that has been subjected to radiotherapy or solar damage. The cytologic, histologic and ultrastructural features of a case of metastatic spindle-cell carcinoma of the rib subjected to fine needle aspiration are presented, and other spindle-cell tumors that should be considered in the differential diagnosis are discussed. PMID- 3859146 TI - Disseminated cryptococcosis presenting as thyroiditis. Fine needle aspiration and autopsy findings. AB - A 47-year-old diabetic ethanol and intravenous drug abuser presented with symptoms and signs indistinguishable from subacute thyroiditis. After cultures of cerebrospinal fluid grew Cryptococcus neoformans, the organism was recognized in a review of a fine needle aspirate of the thyroid. Postmortem examination documented extensive thyroid inflammation and fibrosis secondary to involvement by widely disseminated C. neoformans. Fungal infection is an uncommon cause of thyroiditis, and the need for a clinical awareness of fungal thyroiditis is emphasized, as is the need to utilize special stains to detect opportunistic infections when examining cytologic preparations from immunocompromised patients. PMID- 3859147 TI - Role of fine needle aspiration biopsy in the diagnosis and management of malacoplakia. AB - A case of malacoplakia of the colon and retroperitoneum is presented. The diagnosis was made by both endoscopic biopsy and fine needle aspiration biopsy (FNAB). The response to therapy was monitored by sequential FNAB. The initial biopsy revealed large numbers of bacilli within the histiocytes; these bacilli were markedly reduced in number during successful therapy but reappeared in large numbers when the disease relapsed. It is suggested that FNAB may play a role in both the diagnosis and management of patients with malacoplakia. PMID- 3859148 TI - Neuroblastoma diagnosed by fine needle aspiration biopsy. AB - Small-cell malignancies of childhood are a source of diagnostic difficulty, both in cytology and histology. Four cases of neuroblastoma are presented that were diagnosed by fine needle aspiration cytology. The importance of a complete history, physical examination and laboratory evaluation is stressed. In addition to the usual description of cytologic detail obtained by routine methods, a new method of study is introduced: the potential use of plastic embedding and histochemical studies in small-cell tumors is discussed. PMID- 3859149 TI - Nodular pulmonary sarcoidosis. Diagnosis with fine needle aspiration biopsy. AB - A case of sarcoidosis presenting as multiple pulmonary nodules and investigated by transthoracic fine needle aspiration biopsy is presented. Cohesive clusters of epithelial cells as well as multinucleated giant cells were observed. Special stains performed on the cell-block preparation were useful in ruling out an infectious etiology. The case demonstrates the value of fine needle aspiration biopsy in the investigation of pulmonary parenchymal disease and illustrates the cytologic findings in this unusual presentation of sarcoidosis. PMID- 3859150 TI - Limitations of aspiration cytology in the diagnosis of primary neoplasms. PMID- 3859151 TI - The scanning electron microscopic appearance of a condyloma acuminatum of the uterine cervix. PMID- 3859152 TI - Progesterone-receptor assay in fine needle aspirates of breast tumors. PMID- 3859153 TI - Early diagnosis of gallbladder carcinoma. PMID- 3859154 TI - Cytologic diagnosis of amelanotic melanoma. PMID- 3859155 TI - An adjustable microscope stand. PMID- 3859156 TI - Molluscum contagiosum diagnosed in a cytologic smear. PMID- 3859157 TI - The immune response to S. aureus in atopic dermatitis. AB - The skin of patients with atopic dermatitis is heavily colonized with S. aureus, and their immune response to S. aureus shows some particular features: (1) A selective hyporesponsiveness to purified S. aureus cell walls in delayed type hypersensitivity skin reactions. (2) The presence of IgE to cell walls and soluble antigens of S. aureus in patients with high serum IgE levels. (3) Elevated cell wall IgE do not correlate with positive immediate skin reactions to whole S. aureus and their cell walls. (4) Regional lymphadenopathy but not impetiginization is associated with high total IgE and S. aureus cell wall IgE. We suggest that these changes in the immune response to S. aureus are related to the chronic S. aureus colonization of the skin. PMID- 3859158 TI - Reduction of active natural killer cells in patients with atopic dermatitis estimated at the single cell level. AB - The natural killer cell cytotoxicity of peripheral blood lymphocytes from twenty one patients with moderate to severe atopic dermatitis was studied directly by a single cell assay. Suspensions of conjugated effector cells bound to target cells were examined with a light microscope to evaluate the cell lysis using trypan blue exclusion. The binding to the K562 target cells and the kinetics of lysis were normal among the patients' lymphocytes, but the percentage of active natural killer cells in the conjugates and the lymphocyte population was found to be significantly reduced. Our results raise the possibility that the number of active natural killer cells may be reduced and/or modulated by enhancing and suppressing signals in patients with atopic dermatitis. PMID- 3859159 TI - Allergy to hen's egg white in atopic dermatitis. AB - Clinical parameters of 84 egg-allergic children were recorded. The individual allergens in hen's egg white were studied by means of crossed radio immunoelectrophoresis (CRIE). Thirteen of the proteins in the egg white were found to have given rise to IgE-antibody production in the egg-allergic children. The major allergens were identified as ovalbumin, ovomucoid and ovotransferrin. Pruritus and exacerbation of atopic dermatitis were the symptoms of egg allergy most frequently recorded. A clear association was found between egg allergy and atopic dermatitis and can be explained on basis of the relationship that seems to exist between atopic dermatitis and high levels of total IgE in serum. This relationship is discussed. PMID- 3859160 TI - Long term follow-up in atopic dermatitis. AB - A long-term follow-up study (minimum 24 years) has been carried out on 955 individuals with a history of atopic dermatitis (AD), who in childhood had been in- or out-patients at the Department of Dermatology, Karolinska Hospital, Stockholm. 62% of the in-patients and 40% of the out-patients still had dermatitis at investigation. The most common site was the hands. Eczematous hand involvement in childhood had been of predominant importance for the occurrence of hand eczema in adult life. Both tabular and stepwise logistic regression analyses revealed that the prognostically unfavorable factors as regards healing were, in order of importance, severe (widespread) dermatitis in childhood, family history of AD, associated allergic rhinitis, and/or bronchial asthma (with allergic rhinitis as the dominant of these two factors), female sex and early age at onset. Fewer than 20% of the individuals with all these prognostic factors were healed at the time of investigation, whereas 85% of those with none of the factors were healed. Persistent dry/itchy skin in adulthood was also found to be associated with persistent or recurring AD to a significantly (p less than 0.001) higher degree than normal skin. As this factor cannot be used as a predictor in childhood, it was not included in the regression analyses. PMID- 3859161 TI - Skin reactions to foods in patients with atopic dermatitis. AB - Thirty-seven patients with moderate or severe persistent atopic dermatitis gave a history of skin reactions following the ingestion of certain foods. These reactions fell into three groups: immediate reactions (within one hour) which included angio-oedema, contact urticaria, generalised itching and erythema, or urticaria; late reactions, where patients experienced late urticaria, late angio oedema, itching, or exacerbation of the dermatitis; dual reactions where immediate reactions were followed by exacerbation of the atopic dermatitis. The foods implicated were either potential allergens or recognised nonimmunological histamine-release agents. Foods which caused an IgE-mediated reaction tended to produce early or dual reactions whereas histamine releasing foods tended to result in late reactions. PMID- 3859162 TI - Ultraviolet light therapy in atopic dermatitis. AB - In 1979-1981, 107 patients with atopic dermatitis were treated with Psorilux 9050 emitting 1.24 mW/cm2 at 280-315 nm and 7.33 mW/cm2 at 315-400 nm. Half of the patients received one treatment course, 20% 2-3 courses, and one third more than 3 treatment courses. A good result was obtained in 93% of the cases but in the other cases the treatment was either ineffective or the patients were too sensitive to the radiation. After the treatment, the need for treatment with topical corticosteroids had decreased in one half of the patients and increased in only 2% of them. In 1982-1983, 89 atopics were treated with Metec Helarium model 1480, emitting both UVB and UVA (310-340 nm, with a peak at 320-330 nm). One treatment course, 3-45 weeks (mean 19 weeks), was given to 69 patients, and two treatment courses to 20 patients. The treatment was effective in 94% of the patients. The others did not respond. After the treatment, the need of treatment with topical corticosteroids had decreased in 85% of the cases, and increased in none. Psorilux therapy caused II degree burns in two patients and erythema lasting greater than 24 hours in 11 patients. Erythema was encountered in 14 patients receiving Metec Helarium therapy but in no cases II degree burns. Seventeen patients received both Psorilux and Metec Helarium therapies and 14 of them preferred the latter. PMID- 3859163 TI - Pityrosporum orbiculare--a pathogenic factor in atopic dermatitis of the face, scalp and neck? AB - Pityrosporum orbiculare (pit.o.), the yeast form of Malassezia furfur, though usually considered to be a non-pathogenic saprophyte, in some individuals trigger various types of dermatitis. It is earlier shown that it is of importance in atopic dermatitis in the head-neck area in adults, and that elimination of the yeast by help of treatment with ketoconazole improve the dermatitis. In this large retrospective study of 741 patients prick-tested with an aqueous extract of pit.o., the occurrence of positive prick-test to pityrosporum was related to the patient's atopic manifestations. It was found that a positive prick-test to pityrosporum was related to active atopic dermatitis, and especially in the head neck region. In contrast to the common allergens in the standard prick-test series, however, pit.o. was not found to give positive prick-tests in patients with atopic conjunctivitis, rhinitis and/or asthma without active dermatitis. This finding strengthens the concept that hypersensitivity to the cutaneous microflora is of pathogenic importance in some cases of atopic dermatitis in adults. PMID- 3859164 TI - Treatment of atopic dermatitis with steroids. PMID- 3859165 TI - Atopic dermatitis in a population based twin series. Concordance rates and heritability estimation. PMID- 3859166 TI - A diagnostic tool for atopic dermatitis based on clinical criteria. AB - Forty-seven patients with atopic dermatitis was compared to non-eczematous controls with regard to the occurrence of different symptoms and signs. This comparison made it possible to analyze statistically atopic symptoms and signs with regard to their diagnostic importance. Hereby, a diagnostic point system was constructed which in 96% of probands gave the correct diagnosis. This diagnostic tool might be used when examining patients with obscure eczematous disease. PMID- 3859167 TI - Non-specific immunotherapy and specific hyposensitization in severe atopic dermatitis. PMID- 3859168 TI - Enzyme-linked immunosorbent assay (ELISA) for isotype-specific quantitation of antibodies to Staphylococcus aureus in patients with atopic dermatitis. AB - An enzyme-linked immunosorbent assay (ELISA) was developed to study the serum antibody response against Staphylococcus aureus within four immunoglobulin classes (IgG, IgA, IgM and IgE) in patients with atopic dermatitis (AD) and in normal controls. Soluble antigens released from S. aureus Wood 46 (protein A deficient) were partially purified by gel filtration of supernatant culture fluid. Median ELISA activity against S. aureus antigens within the IgG and IgE classes was significantly higher in patients than in controls (IgG, p less than 0.005; IgE, p less than 0.05). Patients with severe disease had significantly higher (p less than 0.05) IgG antibody levels than those with mild AD. No such clinical association was found for IgE activity. The antibody levels showed no relation to the serum concentrations of total IgE. PMID- 3859169 TI - Epidermal changes in atopic dermatitis. AB - The epidermal changes occurring in various lesions of atopic dermatitis are reported. Quantitative evaluation or epidermal thickening suggests that both differentiated and undifferentiated compartments are increased in lichenified lesions. In dry skin (xerosis) of atopic dermatitis moderate but obvious inflammatory changes are observed. There is a mild increase of the epidermal volume without folding of the dermo-epidermal interface. The latter is most prominent in exudative and lichenified lesions where a fourfold overall increase of epidermal volume is observed. PMID- 3859170 TI - Studies of HLA-ABC and DR antigens in pure atopic dermatitis and atopic dermatitis combined with allergic respiratory disease. AB - The HLA-ABC antigens were investigated in 29 patients with pure atopic dermatitis and 43 patients with atopic dermatitis combined with atopic respiratory disease (ARD). Furthermore, the DR antigens were studied in 10 patients with dermatitis alone and in 24 patients with combined atopic disease. The frequencies of antigens and the HLA phenotypes A1, B8 and A3, B7 in the entire group of patients and in two subgroups did not differ significantly from those in controls, when correction was made for the number of comparisons made. However, the frequency of HLA-DR7 was strikingly low, but this observation needs confirmation. IgE levels were measured in eight patients with pure dermatitis and in 24 patients with dermatitis combined with ARD and found equally increased in both groups compared to controls. PMID- 3859171 TI - Delayed type hypersensitivity in atopic dermatitis. AB - Three different aspects of delayed type hypersensitivity in atopic dermatitis (A.D.) were studied. (a) Intradermal testing demonstrated that positive reactions to bacterial vaccines were distinctly lower in patients with A.D. (b) Patch testing in patients with A.D. compared to tests in patients with anal eczema showed a striking difference in results concerning the substances to which positive reactions were found. (c) Patients with A.D. (n = 18), atopics without A.D. (n = 10), patients with contact dermatitis (n = 10), and normal controls (n = 10), were patch tested with various human dander (H.D.) fractions after stripping the stratum corneum with skin tape. Only patients with A.D. showed positive reactions, the maximum response being at 24-48 hours. There was no difference in reaction pattern between partially purified H.D. subfractions. Histopathological examination revealed an eczema-reaction. Patch testing within the same patient groups with purified house dust mite allergen P1 demonstrated similar results. Although this finding argues against a specific role of H.D. allergen in A.D. it may at least be concluded that H.D. preparations have the capacity to provoke immediate as well as delayed type skin reactions. PMID- 3859172 TI - A prospective computerized study of 500 cases of atopic dermatitis in childhood. I. Initial analysis of 250 parameters. AB - We report the initial results arising from analysis of a prospective computerized study of infantile atopic dermatitis in which, among other factors, the criteria of severity of the dermatitis was considered for the first time. Besides providing informations on the natural history of childhood AD, this study showed that onset of asthma was significantly earlier in children affected with severe AD. PMID- 3859173 TI - Role of some infectious agents in atopic dermatitis. AB - Certain infections such as Kaposi's herpetic eruption, impetigo, recurrent cutaneous herpes simplex and warts are more frequent in subjects with atopic dermatitis. It is likely that the continuous alterations of the skin are more important than immunological factors in increasing the frequency of some infections in subjects with atopic dermatitis. Moreover, these infections do not seem to affect significantly the clinical course of atopic dermatitis. PMID- 3859174 TI - Leukemic manifestations in a patient with extranodal lymphoma--lymphosarcoma cell leukemia or prolymphocytic leukemia? PMID- 3859175 TI - A case of chronic myelocytic leukemia in myeloblastic crisis with eosinophilia after splenic irradiation. PMID- 3859176 TI - Osteogenesis imperfecta clinical features, hearing loss and stapedectomy. Biochemical, osteodensitometric, corneometric and histological aspects in comparison with otosclerosis. PMID- 3859177 TI - Natural killer cell activity of peripheral blood and bone marrow mononuclear cells from patients with childhood acute lymphoblastic leukemia. AB - Patients with untreated acute lymphoblastic leukemia had highly significantly reduced natural killer cell activity in peripheral blood (p less than 0.01) and bone marrow (p less than 0.001) mononuclear cells compared with that in peripheral blood mononuclear cells in normal healthy controls. Patients in remission had normal killer cell activity (p greater than 0.5) both in peripheral blood and bone marrow mononuclear cells. Thus, the natural killer cell activity correlated well with the disease activity in the patients. PMID- 3859178 TI - Focus on the Italian psychiatric reform. PMID- 3859179 TI - Psychiatric practice in Umbria: research and transformation processes in the light of juridical-prescriptive events. AB - The present paper provides a synthetic account of the process of renewal and transformation of psychiatric care in Umbria, and, more specifically, in Perugia, in the last two decades. In the first part we attempt to show that the significance assigned to the normative aspect in the framework of psychiatric care in Italy has been excessive, particularly in the last few years. In the second, we try to give an account of the psychiatric work done in Umbria. We deal first with the period preceding the passing of Law no. 180 by the Italian Parliament; then we discuss the relationship between the new law and the processes in action; finally, we consider more recent problems concerning the attempts to promote a psychiatric counter-reformation and the theory and practice of our work. PMID- 3859180 TI - Application of the Psychiatric Reform Act in the city of Naples. A survey of requests for compulsory admission to the special unit at the University Psychiatric Department I. AB - One of the most patent inconsistencies in the application of the 1978 Psychiatric Reform Act in many areas of Southern Italy has resulted from the irrational choice, by regional governments, of the general hospitals in which Psychiatric Special Units had to be implemented, and from the inappropriate determination of territorial boundaries defining the competence of such Units. Thus, in the city of Naples, it was decided, in June 1978, to set up Psychiatric Special Units only in the two University Psychiatric Departments and in the Psychiatric Emergency Ward at S. Gennaro Hospital. These Units, equipped with an overall number of 39 beds, were put in charge with the whole province of Naples (about three millions inhabitants). Quite arbitrarily, it was established that University Departments had to admit patients coming from the city of Naples and S. Gennaro Hospital those residing in the rest of the province. By an equally arbitrary choice, female patients from the city of Naples were entrusted to the University Department I and male patients to the Psychiatric Department II. In the following years, from 1979 to 1983, some additional Units were set up in general hospitals of the Naples province. Nonetheless, available beds have not exceeded the overall number of 69, and the catchment areas of the three pre-existing Special Units have not been modified. The chaotic situation engendered by this incongruous application of the Reform Act is outlined, by means of an analysis of the requests for compulsory admission addressed to the Special Unit at the Psychiatric Department I of Naples University during the periods June 16, 1978 December 31, 1979 and June 16, 1982-December 31, 1983. PMID- 3859181 TI - Patients admitted for compulsory treatment to selected psychiatric units in Italy and in Sweden. AB - Eighty-five Italian and forty-nine Swedish patients consecutively admitted for compulsory treatment to either an Italian or a Swedish psychiatric unit in selected areas of the two countries have participated in an exploratory study aimed at assessing the main characteristics of compulsory admitted patients, and in particular, the immediate reason for admission. The two series proved to be quite similar as concerns most sociodemographic variables, and as concerns clinical diagnosis and severity of the morbid condition at admission as measured by means of a rating scale. More Swedish than Italian patients lived alone when admitted to hospital, and for more of them the request for admission was made by other people than relatives, and a larger proportion of them was accompanied to the hospital by medical or social welfare personnel. In both series the largest proportion had a low educational level and belonged to the lower social groups. The same proportion in the two series had previous admissions. The most common reason for admission was "odd or improper behaviour" for the Swedish patients, and "feared or manifest dangerousness" for the Italian patients. The Italian patients remained at hospital on average half the time than the Swedish patients. PMID- 3859182 TI - The impact of Psychiatric Reform on inpatient services in a metropolitan area of Southern Italy: the Naples case. AB - Six years after the Psychiatric Reform, phasing out of Mental Hospital and implementing a community based Mental Health System, i.e. the main goals of the Reform, are not yet performed in Southern big cities of Italian peninsula. In Naples metropolitan area this new Mental Health policy faces with a dramatic lack of community services. This paper summarizes data concerning the trends in psychiatric admissions to some inpatient public settings of Naples before and after the Reform, with the intent of pointing out the short-time outcomes of this law in a highly populated area. The Authors stress some positive results of the Reform in the study area, as well as the factors which have contributed to the inadequate application of the new law. PMID- 3859183 TI - Psychiatric hospitalization in Italy before and after 1978. AB - The available information system in Italy does not allow to adequately evaluate the change in patterns of hospitalization that have taken place after the 1978 Mental Health Act came into force. There are huge differences among Northern and Southern Italy and inside these areas. On average, the reduction of public psychiatric hospitals activity had begun around 70's. People living in these hospitals at the census day January 1st were about 75,000 in the first years of the 70's, were 58,000 in 1977 and further decreased to 38,000 in 1981 (67.6 per 100,000 total population). This decrease was not counterbalanced either by private psychiatric hospitals, or by the newly opened Psychiatric Departments in general hospitals. Scant or no information is available on intermediate facilities, and on follow-up of discharged inpatients. PMID- 3859184 TI - The end of the mental hospital. A review of the psychiatric experience in Trieste. AB - This paper describes the closing of the mental hospital in Trieste and the establishing of a comprehensive community mental health service, over a period of 13 years from 1971. In 1971 the hospital had 1058 patients. By 1975 there were 656 patients, 403 of whom were guests, in effect ordinary citizens who had nowhere else to live. The paper describes this dramatic and innovative transformation, the rearrangement of wards, the abolition of shock therapies, the establishment of many flats and group homes, the starting of a cleaning cooperative employing ex-patients to do the work they previously did as "ergotherapy", the first mass exodus of the patients into the city. The paper goes on to describe the opening of 7 mental health centres between 1975 and 1977 and the present existing network of services. At this time the hospital buildings were converted into a variety of uses for the benefit of the local people. It describes in greater detail the philosophy and practice of one of these centres at Barcola and how the dialectical relationship between staff and client works to create a flexible and responsive service. It ends by repeating the assertion that the closure of the mental hospital is a first necessary step towards an improved mental health service for everyone. PMID- 3859185 TI - Bringing into action the psychiatric reform in South-Verona. A five year experience. AB - The organization of psychiatric care in Verona prior to the new Italian Mental Health Act, and the organization of the new South-Verona Community Psychiatric Service (CPS) implemented in 1978 after the approval of the new law, are described. Case-register data for the period 1979-1983 are also reported. To compare in-patient care provided in South-Verona after the Reform with that of the previous year, data on hospital admissions during 1977 were collected retrospectively. From 1977 to 1983 compulsory admissions have decreased by 67%, the average number of occupied beds per day and the average length of in-patient stay have decreased by 34%, while the total rates of admission have increased by 4%. The long-stay in-patient rate, which was already considerably low in 1977 (48/100,000), is still decreasing slightly and no "new" long-stay patients have accumulated in psychiatric institutions during the past three years. In South Verona most of the patients are treated outside the hospital and the same staff is responsible for in- as well as for out-patient care (which includes domiciliary visits and day care), to ensure therapeutic continuity. Although it lacks some complementary facilities the South-Verona CPS in its five years of experience has been able to bring into action the psychiatric reform as indicated by the new Law. PMID- 3859186 TI - Register studies: data from four areas in Northern Italy. AB - Descriptive statistics derived from four psychiatric case-register areas are presented. Attrition numbers of long-stay inpatients and the accumulation of high user patients in non-residential facilities are discussed, with the aim of providing tentative suggestions for a more rational planning of services. Similarities and differences among various areas of Northern Italy are also described. PMID- 3859187 TI - Focus on the Italian psychiatric reform: an introduction. PMID- 3859188 TI - A model of a single comprehensive mental health service for a catchment area: a community alternative to hospitalization. AB - The possibility of overcoming the Psychiatric Hospital with a single Community Service consisting of a network of territorial activities for the total population of a defined area is described. An evaluation is made from 1971 to 1983. Handicapped children are treated essentially in the family and normal educational structures. Diagnostic prevalence of more serious cases, modes of treatment, scholastic facilities and rejection of special schools are described. Work methods and community facilities, mean-year incidence and one-year prevalence of patients aged 15 + are examined. The latter convalidates priority towards serious risk situations. Specific rehabilitation and work-reintegration are programmed for handicap and disability patients. Release of long-stay psychiatric patients continues through alternative programmes with housing facilities. By 1985 the Psychiatric Hospital should close down. The population is treated by the C.M.H.S. when hospitalized in the General Hospital where no psychiatric ward exists. Crisis intervention, alternative treatment and hospitalization statistics are described. PMID- 3859189 TI - Management of angina pectoris. Proceedings of the Seventh Paavo Nurmi Symposium, Porvoo, Finland, October 6-8, 1983. PMID- 3859190 TI - The relationship between prognosis and angiographic and exercise data. PMID- 3859191 TI - Left ventricular function in myocardial ischaemia. PMID- 3859192 TI - Coronary circulation in the presence of vascular disease. AB - This paper discusses three specific aspects of coronary circulation as they relate to the patient with coronary artery disease. Firstly, the normal autoregulatory and metabolic control of the coronary circulation is considered in the light of current understanding of the relevant processes. Secondly, the implications of microcirculatory heterogeneities are discussed. Thirdly, the implications of the current debate on the impact of cardiac contraction for our understanding of the perfusion of the myocardium in compromised circumstances are analysed in an attempt to provide the clinician with a tool for assessing current therapy. PMID- 3859194 TI - Evidence of myocardial ischaemia in patients with chest pain syndromes and normal coronary angiograms. AB - Patients with chest pain syndromes and normal coronary angiograms were studied with a new set of methods that included thermodilution coronary sinus blood flow and coronary dye dilution curves with special computer analysis, oxygen and lactate determinations, thallium scannings, atrial pacing and dipyridamole tests. The following observations and conclusions were made: Patients with cardiac hypertrophy have a reduced circulating coronary blood volume in relation to the left ventricular mass; this may play a role in patients' vulnerability to ischaemia. During pacing-induced angina a significant imbalance between oxygen supply and demand can be demonstrated in patients with "syndrome X". Dipyridamole induced chest pain as a result of myocardial ischaemia seems to occur in patients with normal coronary arteries. Marked ischaemia evidenced by a regional intensity reduction of 25% or more in thallium scans results in a significant increase in coronary volume. This is obviously due to mobilization of reserve vasculature as a response to ischaemia. A reduction in the ratio of myocardial oxygen supply to demand was demonstrated even in connection with milder defects, the regional intensity reduction being as low as 12.5%. PMID- 3859193 TI - Progressive vasomotor changes in ischaemic myocardium. AB - Under certain conditions, a progressive increase in vascular resistance occurs within ischaemic myocardium during the first three hours after coronary artery stenosis. Measurements of vasodilator reserve in the ischaemic region demonstrated that this is at least partly due to an increase in vascular smooth muscle tone. Two hypotheses were suggested as an explanation: release of vasoconstrictors within the ischaemic area, or a decreasing release of vasodilators. Potential coronary constrictors considered included norepinephrine, PGF2 alpha, thromboxane A2, and high K+. Each of these substances was eliminated as the source of the vasoconstriction by pharmacological studies on ischaemic canine hearts. Measurement of adenosine release from isolated guinea pig hearts provided support for the possibility that the vasoconstriction results from a decreasing release of metabolic vasodilators. Throughout the period of ischaemia, both blood flow and myocardial function were far below the levels that could have been achieved in the presence of the stenosis. We conclude that during moderate ischaemia, myocardial function and blood flow are linked in a positive feedback cycle which promotes reduced ventricular function and coronary blood flow. PMID- 3859195 TI - Coronary atherosclerosis revisited. A pathologist's view. AB - For many years the paradigm of coronary atherosclerosis, set by pathologists, was the far-advanced lesion containing extensive atheromatosis with calcifications. From the point of view of understanding atherogenesis, however, it is much more rewarding to study the coronary artery in patients without clinical evidence of obstructive coronary artery disease. In fact, the normal coronary artery is most revealing in showing discrete intimal changes, which consist of a splitting of the internal elastic lamina accompanied by a proliferation of vascular smooth muscle cells. This process eventually results in the formation of the musculo elastic layer. In time the cellular and muscular appearance of this layer gradually transforms into a more densely packed fibrous texture. It is of interest, from a point of view of atherogenesis, that the early atherosclerotic lesions often display the histologic features of the musculo-elastic layer at the base of the plaque. Hence, these observations support the concept that the basic lesion in coronary atherosclerosis is a proliferation of vascular smooth muscle cells, most likely as a response to injury. To this extent a dysfunction of the endothelial cell barrier may by crucial. The observations also indicate that the mechanisms involved in atherogenesis also may alter vascular tone and hence, may contribute to a "spastic state" of the coronary arteries. A classification of angina pectoris, on the basis of pathogenesis into organic and spastic may thus prove to be simplistic. PMID- 3859196 TI - Narrowing of coronary artery: thresholds for the occurrence of angina pectoris. AB - The degree of narrowing of coronary artery that caused angina pectoris, was estimated in female and male patients with single vessel coronary artery disease, with the aid of quantitative measurements of a single stenosis in arteriograms. In female patients, the onset of mild angina pectoris (NYHA, functional class I II) occurred when the coronary artery diameter was reduced by an average of 41 per cent, whereas it could not be estimated reliably in male patients because they nearly all had well developed collaterals bypassing the stenosis. For severe angina pectoris (NYHA, functional class III-IV) the mean stenosis was 72 per cent in female and 78 per cent in male patients. PMID- 3859197 TI - Role of coronary spasm in different anginal syndromes. AB - Angina pectoris is a clinical syndrome caused by transient myocardial ischaemia due to an imbalance between myocardial oxygen demand and supply. It is now evident that coronary artery spasm plays an important role in the pathogenesis of various forms of angina pectoris. Angina pectoris that is mainly caused by coronary artery spasm (coronary spastic angina) has one or more of the following characteristics: 1) the attack occurs at rest, 2) the attack is associated with ST-segment elevation in the ECG, 3) the attack has a variable exercise threshold, and 4) the attack is suppressed by Ca-antagonists but not by beta-adrenergic blocking agents. On the other hand, angina pectoris that is caused by increased myocardial oxygen demand in the presence of severe and extensive organic stenosis (organic angina) has the following characteristics: 1) the attack is induced by constant amount of exertion irrespective of hour and day and is relieved by rest, 2) the attack is associated with ST-segment depression in the ECG, and 3) the attack is suppressed by beta-adrenergic blocking agents, which decrease myocardial oxygen demand. PMID- 3859198 TI - New characteristics of angina, ischaemia and coronary disease based on the reality outside hospital. PMID- 3859199 TI - The chromosomal assignment of muscle-specific genes. PMID- 3859200 TI - Actions of prostaglandin E2 metabolites on skin microcirculation. AB - The actions of prostaglandin, E2 on skin microcirculation were compared with two of its metabolites. 2-10 ng prostaglandin E2, 2-10 micrograms 15-keto prostaglandin E2 and 5-10 micrograms 13,14-dihydro-15-keto prostaglandin E2 produced the following dose-related effects: increased area and intensity of erythema in human skin, increased vascular permeability in rat skin, potentiation of the increased vascular permeability elicited by either histamine or bradykinin, potentiation of carrageenan-induced oedema in the rat paw. The prostaglandin E2 metabolites are about 1000 times less active than the parent prostaglandin and are unlikely to account for the inflammatory actions of prostaglandin E2. PMID- 3859201 TI - Regulation of the macrophage oxidative burst by mediators: effects of inhibitors. PMID- 3859202 TI - Relationship between zinc and prostaglandin metabolisms in plasma and small intestine of rats. AB - The effect of zinc nutriture on levels of prostaglandin (PG) E2, F2 alpha and 6 keto-PGF1 alpha in the plasma and small intestine of rats, and that of PGE2 and PGF2 alpha on unidirectional uptake of 65Zn by everted gut sac of rats was determined. When zinc was given intraperitoneally, plasma PGE2 and intestinal PGF2 alpha levels increased, while the intestinal PGE2 and the plasma PGF2 alpha and 6-keto-PGF1 alpha levels decreased in accordance with the amount of zinc given. Oral administration of excess zinc increased intestinal PGE2, PGF2 alpha and 6-keto-PGF1 alpha levels and the plasma 6-keto-PGF1 alpha levels. The intestinal levels of PGE2 increased significantly only in rats on zinc excess diet, and of PGF2 alpha only in rats on a zinc deficient diet. The plasma PGE2 levels in rats on both zinc deficient and zinc excess diets increased but PGF2 alpha levels in zinc deficient rats were greatly reduced compared to controls. Unidirectional zinc uptake by everted gut sac of the rat is also enhanced by PG metabolites. These results are consistent with the view that PGs participate in regulating the zinc transport mechanism in small intestine. PMID- 3859203 TI - X-linked glycogen storage disease. A cause of hypotonia, hyperuricemia, and growth retardation. AB - Seven male members of one family had a form of glycogen storage disease that was inherited in an X-linked recessive pattern. The clinical manifestations included hepatomegaly, delay in growth and sexual maturation, muscular weakness in childhood, and gouty arthritis. The cause of the glycogen accumulation did not appear to be a deficiency of glucose 6-phosphatase, debrancher enzyme, phosphorylase, or phosphorylase kinase. Prognosis appeared to be good although there was significant disability during childhood. PMID- 3859204 TI - Tourette syndrome: clinical and psychological aspects of 250 cases. AB - Tourette syndrome is a common hereditary neuropsychiatric disorder consisting of multiple tics and vocal noises. We summarize here clinical aspects of 250 consecutive cases seen over a period of 3 years. The sex ratio was four males to one female, and the mean age of onset was 6.9 years. Only 10% were Jewish, indicating that it is not more prevalent in Ashkenazi Jews. Only 33% had compulsive swearing (coprolalia), indicating that this is not necessary for the diagnosis. The most frequent initial symptoms were rapid eye-blinking, facial grimacing, and throat-clearing. In this series, it was clear that Tourette syndrome is a psychiatric as well as a neurological disorder. Significant discipline problems and/or problems with anger and violence occurred in 61%, and 54% had attention-deficit disorder with hyperactivity. Some degree of exhibitionism was present in 15.9% of males and 6.1% of females. Obsessive compulsive behavior was seen in 32%. Other than tics and vocal noises, the most common parental complaints were of short temper and everything being a confrontation. There were no significant clinical differences between familial and sporadic cases. Whenever a child presents with a learning disorder, attention deficit disorder, or significant discipline or emotional problems, the parents should be questioned about the presence of tics or vocal noises in the patient and other family members. PMID- 3859205 TI - Multilocus linkage analysis in humans: detection of linkage and estimation of recombination. AB - Multilocus linkage analysis is investigated from the viewpoint of the efficiency of recombination estimates under different strategies for detecting linkage and determining gene order within a linkage group. We consider the appropriateness of assuming no interference with data available in human genetic studies. Examples are given to show the significance of multilocus analysis in humans. A computer program package, LINKAGE, for multilocus linkage analysis is described. PMID- 3859206 TI - Carbapenems: a new class of antibiotics. PMID- 3859207 TI - Imipenem/cilastatin in the treatment of osteomyelitis. AB - Thirty-four patients with osteomyelitis were treated for a mean of 32.5 days with 2 to 4 g per day of imipenem/cilastatin. Twenty-six infections involving the lower extremities were associated with accidents and prosthesis implantation, and 19 of 34 patients had more than one organism isolated. Gram-positive and gram negative organisms were equally represented, but follow-up bone culture samples showed only 11 percent of gram-positive organisms persisted versus 23 percent of gram-negative organisms. Seventy-four percent of patients were cured or improved, and failures were related to resistant organisms and the inability to perform adequate surgical debridement. Adverse drug side effects included nausea, diarrhea, liver enzyme elevations, and neutropenia, but discontinuation of treatment was required in only three patients. Imipenem/cilastatin holds promise as monotherapy in complicated polymicrobial osteomyelitis. PMID- 3859208 TI - Pneumonia treated with imipenem/cilastatin. AB - In an open, prospective, multicenter trial the efficacy and tolerance of imipenem/cilastatin for the treatment of bacterial pneumonia was investigated. Forty-three adults were studied: 29 with nosocomial and 14 with community acquired infections. Significant underlying disease was present in 91 percent of patients. Nosocomial infection was frequently associated with endotracheal intubation (48 percent), prior antibiotic therapy (48 percent), and recent surgery (31 percent). Most frequent sputum isolates included Pseudomonas aeruginosa (10, all nosocomial), Hemophilus influenzae (10), Escherichia coli (eight), Staphylococcus aureus (seven), and Streptococcus pneumoniae (six). Treatment with imipenem/cilastatin was associated with clinical cure in 93 percent of patients. Two of three failures and one superinfection occurred in association with isolates of Pseudomonas aeruginosa resistant to imipenem. Overall, six of 10 strains of Pseudomonas aeruginosa isolated prior to therapy developed resistance to imipenem after an average of 10 days of therapy. Adverse effects occurred in nine patients (21 percent) and included one case of pseudomembranous colitis. Monotherapy with imipenem/cilastatin of serious lower respiratory tract infections was relatively safe and highly effective with the exception of disease associated with P. aeruginosa. PMID- 3859209 TI - Multiple-dose study of imipenem/cilastatin in patients with end-stage renal disease undergoing long-term hemodialysis. AB - Multiple doses of imipenem/cilastatin were administered to patients with end stage renal disease undergoing long-term hemodialysis. Schedules of 250 mg every six hours, 500 mg every six hours, and 500 mg every 12 hours were studied. Five hundred mg every 12 hours was the most efficient schedule that maintained effective trough antibiotic activity. Twelve volunteers including two patients with clinical infections using the dose schedule of 500 mg every 12 hours received imipenem/cilastatin for two to 14 days without any notable clinical side effects. Imipenem peak and trough concentrations averaged 29 +/- 5 micrograms/ml and 10 +/- 3 micrograms/ml, respectively. No accumulation of imipenem occurred during the trial. Cilastatin peak and trough concentrations were 89 +/- 38 micrograms/ml and 70 +/- 27 micrograms/ml, respectively. The plasma concentration of cilastatin increased with each dose until the next hemodialysis session. PMID- 3859210 TI - Efficacy of imipenem/cilastatin in endocarditis. AB - Imipenem, a potent new beta-lactam antibiotic, which is bactericidal against most pathogenic bacteria, and cilastatin, a dehydropeptidase inhibitor combined with imipenem to prevent the metabolism of imipenem in the kidney, were evaluated in the treatment of bacterial endocarditis. Seventeen patients, including 14 who used intravenous drugs, were treated with imipenem/cilastatin in a dose of 500 mg each infused over 30 minutes every six hours. The mean duration of treatment was 29 days with a range of 21 to 56 days. Causative bacteria were Staphylococcus aureus in 10 patients, S. aureus plus group B Streptococcus in one, viridans group Streptococcus in two, Neisseria subflava, Eikenella corrodens, and group G Streptococcus in one patient, and Staphylococcus epidermidis, Hemophilus aphrophilus, and Enterobacter aerogenes in one patient each. The minimal bactericidal concentration of imipenem against 16 of 18 isolates tested was 0.04 micrograms/ml, 1 microgram/ml against H. aphrophilus, and 0.4 micrograms/ml against E. aerogenes. The site of infection was the right side of the heart in 11 patients, the left side in five, and both sides in one. The mean number of days to defervescence was 9.7. All patients were cured, and none required cardiac surgery. Adverse effects were few and interrupted treatment occurred in only one patient who had acute dyspnea during an infusion on Day 26 of therapy. Imipenem/cilastatin appears to be a relatively safe and highly effective treatment of staphylococcal endocarditis in intravenous drug users; too few patients with endocarditis caused by other bacteria were treated to allow a firm statement about efficacy in non-staphylococcal endocarditis. PMID- 3859211 TI - Imipenem/cilastatin: general experience in a community hospital. AB - Imipenem/cilastatin is a new carbapenem antibiotic with broad spectrum antimicrobial activity. Forty two patients with infections of various types, including skin and soft tissue, respiratory tract, bone and joint, and urinary tract, were treated with this antibiotic in an open noncomparative study. Clinical responses to therapy were excellent and failures were only encountered with infections caused by Pseudomonas aeruginosa strains that developed resistance during therapy. Superinfection rates were minimal as were toxicities. Imipenem/cilastatin appears to be a relatively safe and highly effective broad spectrum antibiotic. PMID- 3859212 TI - Role for newer beta-lactam antibiotics in treatment of osteomyelitis. AB - Monotherapy of osteomyelitis with the newer broad-spectrum beta-lactam antibiotics has become attractive because of the efficacy, safety, and cost of these antibiotics when compared with conventional combination therapy. Imipenem/cilastatin is a recent and promising addition to this antibiotic family. Experience with imipenem/cilastatin and that reported for cefotaxime, ceftazidime, and ceftizoxime in the treatment of biopsy-proved osteomyelitis was compared, using data from published reports from five centers. Two hundred forty three patients were evaluable: 34 were treated with imipenem/cilastatin, 84 with cefotaxime, 122 with ceftazidime, and 33 with ceftizoxime. Staphylococcus aureus was isolated by 80 bone cultures and was the most common single species encountered. There were 75 isolates of Pseudomonas aeruginosa, 113 mixed Enterobacteriaceae species, 115 mixed gram-positive and -negative isolates of miscellaneous species, and 30 anerobic isolates. Polymicrobial infection was present in 101 cases (41.6 percent). Failure rates were similarly low in all groups (10 to 30 percent). However, resistance developed during therapy in all groups with P. aeruginosa. Side effects were predictably few, but reversible neutropenia, pseudomembranous colitis due to Clostridium difficile, and nausea required therapy to be discontinued in seven patients. Imipenem/cilastatin should prove to be a very effective and relatively safe single agent for treatment of osteomyelitis. PMID- 3859213 TI - Carbapenems, a new class of beta-lactam antibiotics. Discovery and development of imipenem/cilastatin. AB - The discovery of Streptomyces cattleya and its antibiotic product, thienamycin, has ushered in a new era of beta-lactam agents, the carbapenems. Numerous carbapenems were subsequently discovered; however, none had the potency, broad spectrum activity, and lack of cross-resistance exhibited by thienamycin. Chemical instability encountered with thienamycin was overcome by the N formimidoyl derivative, imipenem. Imipenem is distinguished from other beta lactams by its outstanding activity against gram-positive organisms as well as against Enterobacteriaceae, Pseudomonas aeruginosa, and Bacteroides. However, development was hindered by extensive renal metabolism of imipenem, resulting in low urinary concentrations of antibiotic. A renal dipeptidase, dehydropeptidase I, was responsible for hydrolyzing imipenem and other carbapenems. To counter its action, a specific inhibitor, cilastatin, was developed. Coadministered with imipenem in a one-to-one ratio, cilastatin provides prolonged, reversible blockade of imipenem metabolism, dramatically improving urinary recoveries to therapeutically significant levels. Cilastatin also contributes to the safety of imipenem, since its coadministration prevents proximal tubular necrosis which has been observed in sensitive animals receiving imipenem alone in high doses. Thus, the combination imipenem and cilastatin overcame the pharmaceutical and metabolic challenges presented by thienamycin, and allowed for the evaluation in humans of the outstanding antimicrobial activity of this new class of beta-lactam antibiotics. PMID- 3859214 TI - Impact of imipenem/cilastatin therapy on normal fecal flora. AB - The impact of parenteral imipenem/cilastatin therapy on the bowel flora of six patients was evaluated. Stool samples were collected before and during therapy and qualitative and quantitative bacteriologic studies were performed. Imipenem had no effect on total microorganism counts. Two patients acquired Candida albicans during therapy, and three patients acquired Proteus species. Pseudomonas species in one patient acquired resistance. Imipenem appears to have a relatively modest effect on the bowel flora and apparently does not readily induce resistance in the resident flora as compared with other agents. PMID- 3859215 TI - Pharmacokinetic profile of imipenem/cilastatin in normal volunteers. AB - Imipenem is a new carbapenem antibiotic. It is coadministered with an equal amount of cilastatin, a dehydropeptidase-I inhibitor. Both drugs achieve similar serum concentrations in normal volunteers. Half-lives for both drugs are on the order of one hour and are excreted in the main into the urine. Cilastatin has been documented to have a metabolite, N-acetyl cilastatin, which can be recovered in the urine in an amount equivalent to approximately 12 percent of the administered dose of the parent compound. Less than 1 percent of a radiolabeled dose of either compound can be recovered in the feces, making clinically significant alterations of the fecal flora unlikely with the imipenem/cilastatin combination. Although probenecid causes only a minor effect on imipenem pharmacology, it increases the area under the curve and half-life of imipenem and decreases the renal clearance of cilastatin significantly. In view of the pharmacokinetic profile of imipenem/cilastatin, the microbiologic activity of imipenem, and the post-antibiotic effect of imipenem against Pseudomonas aeruginosa, imipenem/cilastatin has the potential to control the majority of bacteremic nosocomial pathogens. PMID- 3859216 TI - Imipenem/cilastatin: pharmacokinetic profile in renal insufficiency. AB - The pharmacokinetics of 250 mg each of intravenous imipenem and cilastatin in combination and 250 mg of cilastatin alone were studied in subjects with varying degrees of renal clearance. Renal disease did not change the volume of distribution of either drug. When the glomerular filtration rate was greater than 100 ml per minute, 48.6 percent of imipenem and 57.1 percent of cilastatin were recovered unchanged in the urine. Consequently, as the glomerular filtration rate declined, the half-life of imipenem increased from 1.02 hours in normal subjects to 3.69 hours in those undergoing dialysis. For cilastatin, the comparable values were 0.86 and 17.08 hours, respectively. The kinetics of cilastatin were unaffected by imipenem. The greater effect of renal disease on the half-life of cilastatin was due to a concomitant 87 percent reduction in nonrenal clearance. Both drugs were removed by hemodialysis. Dialysis reduced the half-life of imipenem from 4.80 to 2.45 hours and that of cilastatin from 16.63 to 3.86 hours. Therefore, dose adjustments will be required in patients with markedly reduced renal function and supplemental dosing will be required after hemodialysis. PMID- 3859218 TI - Review of adverse experiences and tolerability in the first 2,516 patients treated with imipenem/cilastatin. AB - The clinical and laboratory data relating to the adverse experiences and tolerability of imipenem/cilastatin in the first 2,516 patients treated with the antibiotic are reviewed, with special reference to the last 793. Clinical adverse experiences were predominantly related to the gastrointestinal system (nausea and vomiting), local injection site, and allergy (rash). A low frequency of drug related seizures was also reported. The most frequent adverse laboratory experiences were transient elevations of liver function test values. In general, the safety profile was similar to that of other beta-lactam antibiotics. PMID- 3859217 TI - Potential of imipenem as single-agent empiric antibiotic therapy of febrile neutropenic patients with cancer. AB - Infection remains a major cause of morbidity and mortality for the patient with cancer who experiences episodes of severe granulocytopenia. The search continues for new antimicrobial agents with improved efficacy and lower incidence of toxicity. Imipenem is a new carbapenem antibiotic which possesses a broad antibacterial spectrum with excellent activity against Pseudomonas aeruginosa and the other commonly recovered enteric gram-negative bacilli that infect the granulocytopenic patient with cancer. The combination of imipenem plus an aminoglycoside has shown in vitro synergy against P. aeruginosa and Staphylococcus aureus whereas the combination of imipenem plus piperacillin or the extended spectrum cephalosporins have frequently shown antagonism when tested against P. aeruginosa and Serratia marcescens. The use of a P. aeruginosa infected neutropenic rat model has provided an in vivo system to evaluate the activity of new antibiotics or antibiotic combinations. Monotherapy with imipenem is as effective in this model as any of the currently available synergistic antibiotic combinations. This degree of activity has not been found with other broad-spectrum antibiotics when used alone. Imipenem provides serum bactericidal activity well above a 1:8 dilution for the four most commonly isolated pathogens: P. aeruginosa, Escherichia coli, Klebsiella species, and S. aureus. In addition, imipenem's post-antibiotic effect against P. aeruginosa may be pertinent. Imipenem is a unique antibiotic, with properties that make it well suited for study as monotherapy for fever and suspected infection in granulocytopenic patients with cancer. A prospective randomized, double-blind study comparing imipenem with a control regimen of piperacillin plus amikacin as empiric antibiotic therapy of febrile granulocytopenic patients with cancer is currently underway at the University of Maryland Cancer Center. PMID- 3859219 TI - Imipenem/cilastatin in the treatment of obstetric and gynecologic infections. AB - Fifty-five patients with soft tissue pelvic infections were treated with imipenem/cilastatin 500 mg intravenously every six hours for a minimum of four days. Six patients were unevaluable, one because of protocol non-compliance and five because no pathogen was isolated. At enrollment, mean temperature was 39.5 degrees C and the mean white blood cell count was 14,700. Of 49 evaluable patients, 43 (87.8 percent) had complete clinical cures. In three of the six patients with clinical failures, subsequent alternative antibiotic treatment also failed and they required operative intervention for pelvic abscess. In two of the patients with failures, antibiotic-associated pseudomembranous colitis developed after three days of imipenem/cilastatin therapy, requiring discontinuation of the medication. At the time of discontinuation, both patients had clinical failures. All microbiologic isolates were susceptible to imipenem/cilastatin, although at least one pathogenic organism persisted in two patients with clinical failures despite apparent in vitro susceptibility of the organism to imipenem/cilastatin. Imipenem/cilastatin is a promising agent for the empiric treatment of serious obstetric and gynecologic infections although surgery often remains a necessary treatment for pelvic abscess regardless of initial antibiotic choice. PMID- 3859220 TI - Safety and efficacy of imipenem/cilastatin in treatment of complicated urinary tract infections. AB - Forty-three patients were treated with imipenem/cilastatin for urinary tract infections. The patients were predominantly men (77 percent), 60 years of age or older (81 percent), and had infections caused by Pseudomonas aeruginosa (58 percent). Forty of 43 cases were complicated (including tumor, stone, obstruction, and renal insufficiency). Approximately 33 percent of patients were febrile (temperature greater than 100.4 degrees). All patients received 500 mg of imipenem/cilastatin intravenously every eight hours. Microbiologic eradication was defined as a sterile urine culture sample obtained from two consecutive urine cultures, one during therapy and one five to nine days after therapy. All patients experienced clinical improvement with microbiologic eradication. No patients experienced drug-related clinical adverse effects. PMID- 3859221 TI - Imipenem/cilastatin therapy of bacteremia. AB - Imipenem/cilastatin was used to treat 135 patients with bacteremia and signs of infection. Ninety percent responded favorably. The bacteriologic eradication rate was 98 percent among the 153 isolates. Only one patient had breakthrough bacteremia and this was a susceptible Clostridium septicum. In two isolates of Pseudomonas aeruginosa, emergence of resistance to imipenem during therapy was noted and appeared to be responsible for clinical failure. Superinfection occurred in 13 patients and was responsible for two treatment failures. PMID- 3859222 TI - Finite element method modeling of craniofacial growth. AB - The application of the concepts of continuum mechanics and of the numerical techniques of the finite element method permits the development of a new and potentially clinically useful method of describing craniofacial skeletal growth. This new method differs from those associated with customary roentgenographic cephalometry in that its descriptions and analyses are invariant; that is, they are independent of any method of registration and superimposition. Such invariance avoids the principal geometric constraint explicit in all analytical methods associated with conventional roentgenographic cephalometry. The conceptual and mathematical bases of the finite element method (FEM) are presented and illustrated by the numerical and graphic descriptions of the two dimensional growth of the rat skull, for which two sets of longitudinal growth data are used. In practice, the FEM permits analysis of the skull at a scale significantly finer than previously possible, by considering cranial structure as consisting of a relatively large number of contiguous finite elements. For each such element, independently, it is then possible to describe and depict both the magnitude and the direction of temporal size and shape changes occurring in that element relative to itself at some initial time. It is emphasized that such descriptions are completely independent of any local reference frame. PMID- 3859223 TI - The puzzle of growth rotation. AB - This article presents a re-examination of the concept of "intramatrix rotation" as defined by Bjork and Skieller in 1983 and also explored by Lavergne and Gasson. This concept is based upon stable landmarks in the mandible (metallic implants). Bjork and Skieller postulated that "intramatrix rotation" is an expression of the remodeling at the lower border of the mandible and assumed that the rotation occurred in the corpus of the mandible. Lavergne and Gasson, on the other hand, contended that the rotation affected the ramus and the gonial angle and, consequently, the length of the condylion-pogonion diagonal. An alternative interpretation of mandibular rotation is presented here. It is based upon an exploration of two divergent hypothetical patterns of growth: (1) a circular growth direction with a center on the chin and no enlargement of the mandible but maximal rotation versus (2) a linear growth direction with maximal enlargement of the mandible but minimal rotation. In reality, most children will fall in between these two postulated extreme patterns. This mechanism for selective enlargement of the mandible in response to condylar growth increments may be termed counterbalancing rotation. An operational definition is presented as follows: counterbalancing rotation pertains to circular condylar growth, accompanied by selective coordinated remodeling, which does not contribute to the incremental growth of the mandible. PMID- 3859224 TI - Dentofacial relationships in persons with unoperated clefts: comparisons between three cleft types. AB - A total of thirty persons with unoperated unilateral cleft lip and alveolus, unilateral cleft lip and palate, and bilateral cleft lip and palate were evaluated. The ages of these persons ranged from 7 to 50 years. Fifty parameters were measured on the cephalograms and the dental casts. Descriptive statistics for these parameters were calculated. The analysis of variance (general linear models procedure) was performed to compare the three cleft groups. Among the significant differences between the cleft groups was an increased steepness of the mandibular plane in persons with palatal clefts. In addition, the persons with bilateral cleft lip and palate had a significant reduction in maxillary intercanine width. A description of the different dentofacial relationships of the different cleft types was also presented. From the findings of the present and previous investigations, it could be surmised that there are differences in the dentofacial relationships of persons with different cleft types. These differences need to be recognized, since they can influence both our understanding of the effects of the surgical repair of the lip and/or palate and the orthodontic management of these cases. The present findings in this relatively limited group of persons indicates that there is still a need to examine in detail a larger number of persons with untreated clefts of the lip and/or palate and to compare them with surgically treated persons from the same population if possible. PMID- 3859225 TI - Androgens and estrogens affect hepatic bile acid sulfotransferase in male rats. AB - The effect of estrogens and androgens on hepatic glycolithocholate sulfotransferase activity was studied in male rats. Significant increases in specific activity were noted following treatment of rats for 21 days with 17 beta estradiol, 17 alpha-ethynylestradiol, and the nonsteroidal estrogen agonists nafoxidine, tamoxifen, and diethylstilbestrol. Similar treatment of male rats with 5 alpha-dihydrotestosterone, hydrocortisone, norethindrone, and prolactin did not affect activity. To further assess the effect of androgens, male rats were castrated. Glycolithocholate sulfotransferase activity increased fivefold by 14 days after castration. Treatment of castrated rats with 5 alpha dihydrotestosterone prevented the increase and maintained activity at the level of sham-operated animals. Castrated animals exhibited an additional increment in activity following treatment with 17 alpha-ethynylestradiol: specific activity in these animals rose to levels comparable with those measured in untreated female rats. These data suggest endogenous androgens maximally suppress hepatic glycolithocholate sulfotransferase activity in male rats. The data also indicate that activity is stimulated by estrogenic compounds of varied chemical structure and that stimulation is not solely due to suppression of androgen release by the testes as a consequence of estrogen treatment. PMID- 3859227 TI - Computed tomographic brain scanning in four neuropsychiatric disorders of childhood. AB - CAT scans were performed in 66 patients with neuropsychiatric disorders of childhood (infantile autism, attention deficit disorder, Tourette's disorder, and language disorder) and a control group of 20 medical patients. Ventricular volume and brain density were determined by quantitative, computer-based methods by researchers blind to the patients' diagnoses. There were no significant differences among diagnostic groups or between neuropsychiatric patients and medical control patients in total ventricular volume, right-left ventricular volume ratio, ventricular asymmetries, ventricle-brain ratios, or brain density. PMID- 3859226 TI - Effect of sustained water diuresis on prostaglandin E2 excretion in humans. AB - The relationship of the renal excretion of prostaglandin E2 (PGE2) to urine flow during a water diuresis was examined using radioimmunoassay (RIA) and gas chromatography-mass spectrometry (GC-MS). Seven normal women fasted overnight were water loaded with 20 ml/kg orally, and each hour for 3 h they drank water to replace the urine volume plus 20 ml. The osmolality of the collected urines ranged from 49 to 1,073 mosmol/kg. Assay of urinary PGE2 concentrations by both RIA and GC-MS gave a correlation coefficient of 0.94. Eight normal women were then studied with a water diuresis sustained for 6 h. The excretion of PGE2 (measured with the validated RIA) increased for the 1st 2-3 h (from 1.8 +/- 0.5 to 25.8 +/- 16.6 pg X kg-1 X min-1), but then fell to base-line level by the 5th h (to 2.9 +/- 0.8 pg X kg-1 X min-1) even though the water diuresis was sustained. The urinary concentration vs. time curves for PGE2 and for the freely diffusible solute urea were compared. PGE2 concentration remained elevated for 3 h before falling (from the 100 pg/ml range to 15 pg/ml) while urea concentration decreased steadily from the 1st h. This finding suggests that the early urinary PGE2 excretion was not a washout phenomenon and is consistent with a transient increase in PGE2 synthesis. We conclude that urinary excretion of PGE2 is not a simple function of urine flow after a water load. There is a transient initial increase in urinary PGE2 excretion at the start of a water load that probably reflects an increase in renal PGE2 synthesis. However, with a sustained water diuresis, PGE2 excretion falls, indicating that an enhanced PGE2 synthesis rate is not required to sustain a water diuresis. PMID- 3859228 TI - Loiasis: "Calabar" swellings and involvement of deep organs. AB - The authors report clinical and histopathologic changes in six patients with symptomatic loiasis. One patient had cutaneous swellings, three patients presented with hydrocele, one patient developed bowel obstruction, and one had generalized fatal loiasis. The first five patients had localized lesions provoked by adult worms; all were surgically removed. The sixth patient died of disseminated loiasis that included a severe loal encephalitis. The authors discuss the mechanism of "Calabar" swellings, the reaction to adult Loa loa worms and loal encephalitis. PMID- 3859229 TI - The importance of personality assessment in the treatment of bulimia. A review of two cases. PMID- 3859230 TI - Intravascular lidocaine toxicity: influence of epinephrine and route of administration. AB - The intravenous (tail vein) and intra-arterial (internal carotid artery) toxicities of 2% lidocaine, 1:100,000 epinephrine, and the combination of drugs were tested in unanesthetized rats. At least 3 doses (normally 10 animals/dose) were used per drug and route of administration; the drugs were given by bolus injection. Probit analysis of lethal dose-response curve data revealed that lidocaine, with or without epinephrine, was significantly more toxic intravenously than by internal carotid artery injection and that epinephrine potentiated the intravascular toxicity of lidocaine. These results modify proposals suggesting that local anesthetics injected accidentally into a branch of the external carotid artery may cause serious adverse reactions by flowing in retrograde fashion down to the internal carotid artery and then directly to the brain. PMID- 3859231 TI - Deflection of conventional versus nondeflecting dental needles in vitro. AB - Deflection of conventional and newly introduced nondeflecting dental local anesthetic needles were compared in vitro by radiographic examination of the course of the needles in a hydrocolloid impression material. Results indicated significantly less deflection of the new needles when compared to a variety of conventional needles. Controlled clinical trials will be required to test the significance of this finding. PMID- 3859232 TI - Long-acting local anesthetics in oral surgery: an experimental evaluation of bupivacaine and etidocaine for oral infiltration anesthesia. AB - The effect of bupivacaine 7.5 mg/ml with epinephrine 5MUg/ml, etidocaine 15 mg/ml with epinephrine 5 MUg/ml, and lidocaine 20 mg/ml with epinephrine 12.5 MUg/ml was studied when used for oral infiltration anesthesia. Twenty healthy volunteers took part in the experimental and double-blind study. One ml of the respective anesthetic solution was deposited supraperiosteally in the apical area of the maxillary right lateral incisor. Onset time, frequency of analgesia, gingival spread, and duration of tooth analgesia were studied and duration of soft-tissue numbness registered. The present investigation showed that lidocaine had a shorter onset time compared with bupivacaine. No difference with regard to frequency was found. Bupivacaine and etidocaine had a longer period of soft tissue numbness, but a significantly shorter duration of tooth analgesia than lidocaine. PMID- 3859233 TI - A clinical study of bupivacaine for mandibular anesthesia in oral surgery. AB - Previous studies have shown the usefulness of bupivacaine in oral surgery. A clinical trial was conducted comparing bupivacaine to lidocaine in 20 patients undergoing the surgical removal of bilateral impacted mandibular third molar teeth at separate appointments. A combination analog and category pain scale was used to assess pain on four occasions over the first 24 hours following the operation. Results showed a marked reduction in postoperative pain experienced over this time and almost unanimous patient preference for bupivacaine. PMID- 3859234 TI - Pulpal response to intraligamentary injection in the cynomologus monkey. AB - The objective of this study was to determine if intraligamentary injection causes qualitative histopathologic changes in the dental pulp of a Cynomologus monkey. In as much as the pulp and periapical tissues of the monkey are similar to that of humans, nonresolving damage to the pulp would contraindicate periodontal ligament injection in procedures where the tooth would not be extracted or the pulp extirpated. Periodontal ligament injection in this study did not produce any histopathological pulpal changes when compared to the pulps of uninjected teeth. PMID- 3859236 TI - Macromolecular structure and specificity: computer-assisted modeling and applications. PMID- 3859235 TI - The ethiopathogenic role of oxygen humidifiers connected to intermittent mandatory ventilation valves on nosocomial pneumonias. PMID- 3859237 TI - On the construction of computer models of proteins by the extension of crystallographic structures. PMID- 3859238 TI - Design of anticancer drugs using modeling techniques. AB - Flexibility of intercalation site geometries within a B-DNA helix was investigated in the twist-shift plane using energy minimization methods. The parameters optimized included sugar conformation, the glycosidic angles and phosphodiester torsion angles. Our calculations show several regions of energetically favorable intercalation geometries in the twist-shift plane. Modeling studies using interactive computer graphics and electrostatic potential surface compatibility provided initial hypotheses for the structures of the drug DNA complexes. These hypotheses were supported and extended by energy minimizations of these complexes. Binding positions, conformational features and relative minimum binding energies of two anticancer drugs, mitoxantrone and bisantrene, were computed for intercalation complexes with DNA in the theoretically defined intercalation sites. Mitoxantrone intercalates DNA from the minor groove and the side chain OH or NH groups are involved in hydrogen bonds with the main chain phosphate groups of DNA, thereby cross-linking the complementary strands. The hydroxyl groups of mitoxantrone can also participate in hydrogen bonding with phosphate oxygens of another chain, thereby cross linking DNA helices. Bisantrene intercalates DNA favorably from the major groove and the NH group of the dihydroimidazole ring can participate in hydrogen bonding with the phosphate oxygens of the backbone. These models are consistent with the physicochemical and electron microscopic studies of the interaction of mitoxantrone and bisantrene with DNA. Our results are now being used to guide the design of novel anticancer drugs that should interact with DNA in a manner similar to that proposed for our representative drugs. PMID- 3859239 TI - Calculations of the three-dimensional structures of proteins. PMID- 3859240 TI - Engineering aspects of protein structure. PMID- 3859241 TI - Hereditary motor sensory neuropathy type II with neurofilament accumulation: new finding or new disorder? AB - Peroneal muscular atrophy is now known to be heterogeneous and to be due to various underlying genetic mechanisms. Exploring this heterogeneity further, we report on a German kinship with the clinical, genetic, and nerve conduction features of hereditary motor and sensory neuropathy type II (HMSN type II) but whose sural nerves on biopsy were found to show infrequent axonal swellings with neurofilament accumulations not previously described. The dominant inheritance and absence of kinky hair set this disorder apart from giant axonal neuropathy. There was no history of toxic exposure to industrial chemicals. We conclude that the disorder either is a new type of HMSN or is HMSN type II with previously unencountered neurofilament accumulations. Neurofilament accumulation indicates that the axon could be a site for primary derangement and may implicate an abnormality of slow axonal flow. In addition, some of the patients exhibited features suggestive of a cardiomyopathy. PMID- 3859242 TI - Pharmacokinetics of imipenem-cilastatin in neonates. AB - Imipenem and its renal dehydropeptidase I inhibitor, cilastatin, were coadministered intravenously in a 1:1 ratio to 30 newborns. Five infants each received single doses of 10, 15, or 20 mg/kg of both drugs. Concentrations in plasma were proportional to the administered dose, and cilastatin achieved consistently higher concentrations than did equivalent doses of imipenem because of its smaller volume of distribution. The pharmacokinetics of both drugs were best described by a one-compartment model. The plasma half-lives of imipenem were 1.7 to 2.4 h, whereas those of cilastatin were 3.9 to 6.3 h. The plasma clearance of cilastatin was approximately one-quarter of that of imipenem in the dose range tested. The urinary concentrations of imipenem were 50% of those of cilastatin despite its higher clearance from plasma. Fifteen additional newborns received five to eight doses of imipenem-cilastatin at 20 mg/kg per dose every 12 h. There was no accumulation of either drug in plasma after repeated administrations, and the mean concentrations in plasma were similar when measured on the first and last days of the multiple-dose study. There was marked intersubject variability, more so for cilastatin. The pharmacokinetics of both drugs in neonates resembled those observed in adults with moderate to severe renal insufficiency. Because the effects of enzyme inhibition on neonates are unknown, additional studies with imipenem-cilastatin (primaxin) are recommended. PMID- 3859243 TI - Single-dose pharmacokinetics of imipenem-cilastatin in neonates. AB - The single-dose pharmacokinetics of imipenem (N-formimidoyl thienamycin), a beta lactam antibiotic, used in combination with cilastatin, a renal dehydropeptidase I inhibitor, were evaluated in 10 neonates 1 to 8 days of age. The imipenem cilastatin combination was given intravenously over a 15-min period at a dose of 15 or 25 mg/kg. Drug concentrations in serum, urine, and cerebrospinal fluid (when available) were determined by high-pressure liquid chromatography, and plasma disposition of the drugs was described by a two-compartment open model. The mean peak plasma levels of imipenem 30 min postinfusion were 55.4 and 27.2 micrograms/ml, and the mean t1/2 beta values were 2.1 and 1.8 h at doses of 25 and 15 mg/kg, respectively. The calculated volume of distribution was 0.41 liters/kg. In two patients from whom cerebrospinal fluid was obtained 1.5 h postinfusion, imipenem levels were 5.6 and 1.1 micrograms/ml at doses of 25 and 15 mg/kg, respectively, representing 10 and 4% of the 1-h serum levels. No side effects attributable to a single dose of imipenem-cilastatin were noted. PMID- 3859244 TI - In vitro antibacterial activity of BMY-28142, a new extended-spectrum cephalosporin. AB - The in vitro activity of BMY-28142 was compared with that of cefotaxime, ceftazidime, moxalactam, and imipenem against 639 clinical isolates and a number of in vitro-selected resistant mutants. BMY-28142 was the most potent compound against the members of the family Enterobacteriaceae with a MIC for 90% of the strains of 0.12 micrograms/ml. The activity against Pseudomonas aeruginosa was comparable to that of ceftazidime and imipenem. Strains of staphylococci were moderately susceptible to BMY-28142 (MIC required to inhibit 90% of strains, 4 micrograms/ml), but Streptococcus faecalis isolates were resistant. The activity of the five compounds was inoculum dependent for several gram-negative species. By a single-step selection procedure, resistant mutants were selected from strains of Citrobacter freundii, Enterobacter cloacae, and P. aeruginosa. The mutant frequencies with the cephalosporins, including BMY-28142, ranged between 10(-6) and 10(-8). BMY-28142 was the most active cephalosporin against these resistant organisms, most of them strong beta-lactamase producers. It inhibited all mutants of C. freundii and E. cloacae at 2 micrograms/ml and all mutants of P. aeruginosa at 32 micrograms/ml. Imipenem on the other hand was as active on all of these resistant organisms as on the parent strains. PMID- 3859245 TI - Pharmacokinetics of imipenem and cilastatin in patients with cystic fibrosis. AB - The pharmacokinetics of imipenem, a new carbapenem antibiotic, and cilastatin, a metabolic inhibitor, were evaluated in 17 patients with cystic fibrosis. Imipenem and cilastatin were combined in a ratio of 1:1 in the infusion solution, and patients intravenously received 30, 60, or 90 mg of imipenem per kg of body weight per day, divided into four equal doses. Pharmacokinetic evaluation after the first dose and again under steady-state conditions revealed biodisposition characteristics which were similar and independent of the daily dose administered. Cilastatin concentrations in serum paralleled those of imipenem. A linear relationship between dose and area under the serum concentration-time curve for both compounds was observed, suggesting a first-order pharmacokinetic process. A total of 50 and 78% of the doses of imipenem and cilastatin, respectively, were recovered unchanged in the urine. The renal clearances of imipenem and cilastatin averaged 54 and 88%, respectively, of the serum clearance. These data suggest that an extrarenal mechanism may be involved in the overall elimination of imipenem. No patient experienced any clinical or biochemical abnormalities during drug therapy. PMID- 3859246 TI - Stimulation of 16-dehydroprogesterone and progesterone reductases of Eubacterium sp. strain 144 by hemin and hydrogen or pyruvate. AB - Suspensions of Eubacterium sp. strain 144, prepared from cells grown with 16 dehydroprogesterone, catalyzed the reduction of this steroid to 17 isoprogesterone at a very low rate. Modifications of the assay to optimize the pH (5.5) and increase the steroid solubility (10% [vol/vol] methanol) did not significantly enhance the reaction. However, growth of strain 144 in the presence of hemin was found to stimulate 16-dehydroprogesterone reductase during the initial 30 min of incubation, giving a biphasic time course. These biphasic kinetics could be eliminated by providing the cells with an exogenous electron donor. Strain 144 used either H2 or pyruvate for this purpose, and 17 isoprogesterone formation was nearly complete after 20 to 30 min of incubation. However, under these conditions, strain 144 further converted 17-isoprogesterone to products which lacked UV absorbance (254 nm). When progesterone was used as a substrate, it was found that strain 144 could reduce the C4-C5 double bond of this steroid by a progesterone reductase to give mostly 5 beta-pregnadione and some 5 alpha-pregnadione. Furthermore, the 3-keto group of 5 beta-pregnadione steroid was also reduced to a hydroxy function. The maximum activities of both 16 dehydroprogesterone and progesterone reductases in cell suspensions required the growth of strain 144 with hemin and 16-dehydroprogesterone and the presence of H2 or pyruvate. PMID- 3859247 TI - 17 beta-hydroxysteroid and 20 alpha-hydroxysteroid dehydrogenase activities of human placental microsomes: kinetic evidence for two enzymes differing in substrate specificity. AB - During storage at 4 degrees C, the 17 beta-hydroxysteroid dehydrogenase activity of human placental microsomes with estradiol-17 beta was more stable than that with testosterone. In order to evaluate the basis for this difference, kinetics with C18-, C19-, and C21- steroids as substrates and/or inhibitors was studied in conjunction with an analysis of the effects of detergents. Both 17 beta hydroxysteroid dehydrogenase (17 beta-HSD) and 20 alpha-hydroxysteroid dehydrogenase (20 alpha-HSD) activities were detected. At pH 9.0, apparent Michaelis constants were 0.8, 1.3, and 2.3 microM for estradiol-17 beta, testosterone, and 20 alpha-dihydroprogesterone, respectively, 17 beta-HSD activity with testosterone was inhibited by estradiol-17 beta, 5 alpha dihydrotestosterone, 5 beta-dihydrotestosterone, 20 alpha-dihydroprogesterone, and progesterone. In each case 90 to 100% inhibition was observed at 50 to 200 microM steroid. Activity with 20 alpha-dihydroprogesterone was similarly sensitive to inhibition by C19-steroids. By contrast, 25 to 45% of the activity with estradiol-17 beta was not inhibited by high concentrations of C19- or C21 steroids and differed from the 17 beta-HSD activity with testosterone and the major fraction of that with estradiol-17 beta by being insensitive to solubilization by detergent. These results are consistent with an association of two dehydrogenase activities with human placental microsomes. One recognizes C18 , C19-, and C21-steroids as substrates with comparable affinities. The second appears to be highly specific for estradiol-17 beta. The former activity may account for most if not all of the oxidation-reduction at C-17 of C19-steroids and at C-20 of C21-compounds at physiological concentrations by term placental tissue. PMID- 3859248 TI - [Phase II study of methyl 6-[3-(2-chloroethyl)-3-nitrosoureido]-6-deoxy-alpha-D glucopyranoside (MCNU)]. AB - Sixty-seven patients with hematological malignancies and 4 with cancers were evaluated in this study. Standard administration of MCNU was instituted intravenously using 50-100 mg/m2 every 2 or 4 weeks, whereas some cases were treated with a higher dose therapy. Of 10 patients with chronic myelogenous leukemia, 7 achieved complete remission (CR), and 1 achieved partial remission (PR). A good response was also obtained in 9 of 10 patients with polycythemia vera and in all 4 patients with essential thrombocythemia. MCNU was less effective in malignant lymphoma (ML) and multiple myeloma (MM) than in myeloproliferative disorders. Two of 15 patients with ML and one of 21 patients with MM achieved CR, and two with ML and three MM achieved PR. Three patients with lung cancer and 1 with gastric cancer showed no response to MCNU. Delayed anemia, leukocytopenia and thrombocytopenia were observed in 38.7% of patients, and these were regarded as major side effects of MCNU. Nausea, vomiting, anorexia and elevated transaminase were also found in about 24% of patients, but only transiently. Our study indicates that MCNU is useful for chemotherapy of hematological malignancies, especially of myeloproliferative disorders. Therefore, further studies on combination chemotherapy with MCNU should be developed. PMID- 3859249 TI - [Clinical evaluation of cases of remission induction failure in acute myelogenous leukemia]. AB - Among 73 patients who were admitted to our hospital between 1972 and 1983, 9 died before starting chemotherapy, 29 achieved complete remission (CR) with an initial regimen of induction chemotherapy, while the remaining 35 patients failed to achieve CR with this initial regimen. Patients with high initial WBC counts (greater than 100,000/cmm), old age, temperature (greater than 38 degrees C) and antecedent hematological disorders, were more prone to failure of remission induction therapy. Comparing CR patients and non-CR patients, there seemed to be no difference in sex distribution, initial platelet counts, initial LDH, percentage of blasts in the blood and bone marrow, the incidence of DIC and the regimen used for remission induction. According to Preisler's criteria, remission induction failure cases were further subdivided into various types and the numbers of each type were as follows: Type I (absolute drug resistance) 1, Type II (relative drug resistance) 16, Type III (regeneration failure) 0, Type IV (hypoplastic death) 6 and Type V (early death) 11. Among 18 M1 cases, 8 were Type II or Type V. Four out of 7 M2 cases belonged to Type II and all 3 M3 cases were Type V. Six out of the 35 remission induction failure patients entered CR with the 2nd chemotherapy regimen and 19 patients died during induction treatment with the initial induction regimen. Causes of death were infection (5 cases), bleeding (6 cases), infection and bleeding (3 cases) and organ failure (5 cases). PMID- 3859250 TI - [Phase II study with methyl 6-[3-(2-chloroethyl)-3-nitrosoureido]-6-deoxy-alpha-D glucopyranoside (MCNU) in hematological malignancies]. AB - Forty-two cases of hematological malignancy (18 cases of CML, three cases of polycythemia vera, 10 cases of malignant lymphoma and 11 cases of multiple myeloma) were treated with MCNU. The results obtained were as follows. MCNU was markedly effective on CML cases, being especially useful during the chronic phase, and a partial remission was observed in one of three patients with CML blastic crisis. A good response was observed in all cases with polycythemia vera. In some cases of malignant lymphoma, a fair response was observed. No response was observed in any of the cases of multiple myeloma. Myelosuppression was a major side effect of MCNU, but other side effects other than melena were not severe. PMID- 3859251 TI - [Combination effects of CDDP, ACR and HCFU on progressive urothelial tumors]. AB - Nine patients with progressive urothelial tumors treated with combination chemotherapy were evaluated. The median age of the patients was fifty-four; 6 men and 3 women; 7 of the tumors were of the renal pelvis and/or ureter and at stage C or D at the time of initial chemotherapy. Another of the tumors was triple cancer (bladder, prostate, sigmoid) and the remaining case was of bladder cancer. The stage of the two bladders cancers was T4. All patients were treated with CDDP (cis-platinum), ACR (aclarubicin hydrochloride) and HCFU (carmoful) and given from one to 3 courses repeated at three-week intervals (mean 2.3 courses). Seven patients were evaluable while two had no evaluable lesions. The response with this chemotherapy was 2 cases of PR (28.5%), 4 cases of NC and one case of PD. No severe toxicities such as nephrotoxicity or cardiotoxicity, were revealed with this combination chemotherapy. PMID- 3859252 TI - [Combination chemotherapy with cyclophosphamide, adriamycin, cisplatin, nimustine(ACNU), and methotrexate (EACAM) in advanced adenocarcinoma of the lung]. AB - Twenty-two patients with advanced adenocarcinoma of the lung were treated with the combination chemotherapy "EACAM" consisting of cyclophosphamide (333mg/m2 X 1), adriamycin (27mg/m2 X 1), cisplatin (25mg X 5), nimustine (33mg/m2 X 1), and methotrexate (27mg/m2 X 3). This regimen was repeated once every 4 or 5 weeks. One complete response (CR) and 8 partial responses (PR) were obtained in 21 evaluable patients and the response rate was 42.9%. It has not been possible to calculate the median survival time for all of the evaluable cases, since 13 of them are still alive up to the present time. The side effects observes were as follows: nausea and vomiting (81.8%), alopecia (81.8%), stomatitis (22.7%), leukocytopenia less than 2,000/mm3 (45.5%), and thrombocytopenia less than 5 X 10(4)/mm3 (18.2%). Apart from strong myelosuppression, no severe infection or bleeding tendency was noticed. A mild elevation of serum createnine was observed in one patient, and no patients developed renal insufficiency. The combination chemotherapy "EACAM" is therefore considered to be a very effective and tolerable treatment for adenocarcinoma of the lung. PMID- 3859253 TI - [Acute hyperleukocytic lymphoblastic leukemia (greater than or equal to 100,000 leukocytes/mm3). Metabolic changes during induction treatment. Study, prevention and treatment]. AB - Acute leukemias with high white blood count have a poor immediate prognosis and the treatment must be started within the first hours following diagnosis. It is necessary to prevent and to treat the severe metabolic disorders observed during induction treatment of acute lymphoblastic leukemia with WBC greater than or equal to 100,000/mm3. We analysed all the metabolic disorders in a retrospective study of 45 patients in order to determine their adequate prevention and treatment. Prevention of hyperuricemia and of secondary renal failure is now possible with urate oxidase, allowing an aggressive and rapid induction. Hyperkalemia can be prevented by urinary alkalinization and hyperphosphoremia with hypocalcemia by high dose intravenous calcium therapy. Renal failure is often transitory and functional. Disseminated intravascular coagulation is treated by heparin and platelets infusion and severe hyperglycemia requires insulin therapy. PMID- 3859254 TI - Examinations concerning the development of lymphoma following transplantation i.p. of AKR mouse lymphoma cells into hybrid mice. AB - Authors used a mouse lymphoma line--originated from a spontaneous AKR lymphoma- for serial transplantation into AKR mice. The homogenizate of the thymoma was always transplanted i.p. into the same mouse strain. When the cells taken from leukemic AKR mice were transplanted into adult C3H/He mice, these did not cause leukemia in the recipients. However, it turned out that the lymphoma cells were able to proliferate in the F3 hybrids of AKR male mouse crossed with C3H/He female. The question then arose, whether the donor cells originated from the AKR mouse grew and caused the lymphoma, or the transplanted cells would induce the cells of the recipient to develop lymphoma. On the basis of the results it was established that the AKR lymphoma cells themselves started developing in the recipients, when they were transplanted into hybrid mice and the cells of the recipient did not. The identification of the transplanted cells was done by the presence of the Rb [4.15] metacentric marker chromosome. These cells were found in the thymus, the lymph nodes and in the developing ascites of the hybrid mice. Two kinds of cell types were found in the lymph nodes, one of them contained the marker, while other did not. The spleen cells were free of the marker chromosome. These data suggest that the thymus manifestation of the AKR mouse lymphoma is heterogeneous--it consists at least of two major types of tumor cells. One of them has affinity to the thymus and the lymph nodes, while the other to the spleen and the lymph nodes too. PMID- 3859255 TI - Myofascial pain syndrome: electromyographic changes associated with local twitch response. AB - Electromyographic (EMG) recordings of the local twitch response in sixteen subjects with pain from active myofascial trigger points in the upper trapezius muscle were examined and compared with recordings from the contralateral normal muscle bands in the same individual. Needle electromyography and a specific reproducible snapping palpation technique were used to elicit and record the local twitch response. The mean value for the EMG recordings of bands with trigger points versus the normal muscle bands using the visual scoring method were 3.81 and .81 respectively. Mean values for the EMG recordings of muscle bands with trigger points versus the normal muscle using the spike counting method were 31.81 and 8.75 respectively. Both results were statistically compared using student's t-test. The motorunit electrical activity of the bands with trigger points was found to be significantly higher (p less than or equal to 0.001) than that of the normal muscle. PMID- 3859256 TI - [Morphogenesis and histophysiology of the corpus luteum]. AB - A great amount of different problems on morphogenesis and histophysiology of the corpus luteum is presented, with an emphasis on light optic and ultrastructural data that characterize the developmental dynamics of the corpus luteum. The vascular reaction is described in details, beginning from the preovulatory period. The total high vascularization rate is demonstrated and certain information on ultrastructure of newly formed capillaries and macrophages is concerned with. For the first time the authors' data on intravascular macrophages are given. The role of macrophages in the function and structural dynamics of the corpus luteum is discussed. Owing to the results obtained histochemically, ultrastructurally and biochemically, the subject on dynamics of the corpus luteum hormonoproduction, on processes participating in the hormone secretion, as well as on the role of the interstitial tissue in the corpus luteum formation is considered. The data from the literature and those of the authors are presented concerning the means and ways of progesteron transport in the form of vesicles, granules, or by means of molecular diffusion. Participation of the corpus luteum macrophages (tissue and vascular ones) in processes of synthesis and transport of progesteron is analysed. The role of prostaglandins in the chain of regulation of development, function and involution of the corpus luteum is studied. The changes in balance of prostaglandins, when prostaglandin F2 is administered result in decreasing amount of progesterone in blood. In the experiment, synthesis of prostaglandins is blocked by indometacin administration and it causes certain disturbances in luteal transformation. PMID- 3859257 TI - Chronic idiopathic megaduodenum in a family. AB - This paper reports a family in which idiopathic megaduodenum occurred. The index case was a 17 year old male with lifelong steatorrhea, episodic vomiting of food consumed days before, offensive belching, and recurrent abdominal pain and distention. The diagnosis was made by a barium meal examination, but only after a failed small bowel biopsy suggested some anatomical abnormality. Direct questioning about family members then revealed that his father, aged 43 years, had similar symptoms and a subsequent barium meal confirmed the diagnosis. Screening of the family revealed megaduodenum in the 20 year old sister who was totally asymptomatic and had normal fecal fat levels but an abnormal breath test. The remainder of the family members were asymptomatic and had normal radiology. This family, in which idiopathic megaduodenum occurred in three of six members, is reported because it illustrates some of the features of idiopathic megaduodenum and chronic idiopathic intestinal pseudo-obstruction. It also demonstrates the need to investigate the families of apparent sporadic cases. Such investigation may uncover additional symptomatic and asymptomatic individuals who may be presenting diagnostic difficulty, and who, by virtue of an early diagnosis, may be spared unnecessary surgery. PMID- 3859258 TI - Low dose cytarabine in acute non-lymphoblastic leukemia or myelodysplastic syndrome: report of six cases and review of the literature. AB - Low dose cytarabine (10 mg m-2, 12 hourly by subcutaneous injection) was used to treat four patients with acute non-lymphoblastic leukemia, two of whom had failed standard induction chemotherapy, and two patients with refractory anemia with excess blasts in transformation. Following treatment two patients entered complete remission (CR) and two patients had survivals of ten and 18 months in stable partial remission. All patients have died, four of progressive or recurrent leukemia, one of a treatment-related intracerebral hemorrhage, and one of lung carcinoma while in CR. Our experience, and a review of the literature, suggest that in general low dose cytarabine is well tolerated, although myelosuppression is common and thrombocytopenia can be a major problem. This form of treatment appears to offer a useful alternative to intensive induction chemotherapy in those patients in whom such treatment is usually poorly tolerated, and has the advantage of being able to be given to an outpatient. PMID- 3859259 TI - Non-Hodgkin's lymphoma involving the central nervous system. AB - In 44 out of 758 patients (5.8%) with non-Hodgkin's lymphoma presenting between 1971 and 1982, the central nervous system (CNS) was involved. Patients with a diffuse histology had a 7.6% (34/449) incidence of CNS involvement compared to 3.9% (10/257) for patients with nodular lymphoma. In 63% of patients there was evidence of progressive systemic lymphoma at the time of diagnosis of CNS disease and in 23% CNS relapse occurred in clinical remission. Bone marrow was involved in 34% of patients at diagnosis and in 52% at some time prior to the onset of CNS complications. Cerebrospinal fluid cytology was positive in 63% and an elevated protein level was found in 95% of patients. The median length of survival of the 44 patients was only 3.2 months, but patients who responded to treatment of CNS lymphoma survived significantly longer than those who showed no response or progressed on therapy. Complete response to CNS treatment was achieved in five patients, of whom none relapsed in the CNS and two are long-term disease-free survivors. CNS prophylaxis appears justified for patients with lymphoblastic lymphoma, Burkitt's tumour, and diffuse undifferentiated lymphoma, who are at high risk of developing CNS complications. Patients with diffuse histiocytic, and diffuse poorly differentiated lymphocytic, lymphoma who have bone marrow involvement may also benefit from CNS prophylaxis. PMID- 3859260 TI - Atrial tachyarrhythmias after cardiac surgery: results of disopyramide therapy. AB - Of 1,247 consecutive patients who underwent cardiac surgery, 297 (24%) developed a post-operative atrial tachyarrhythmia. Of these patients, 201 were suitable for treatment according to the study protocol. All patients were initially given digoxin 0.75 mg intravenously (i.v.). After two hours, those 156 patients whose atrial arrhythmias persisted were given a 2 mg/kg loading dose of disopyramide (i.v.), followed by a constant i.v. infusion (0.4 mg kg-1 h-1) or oral therapy (600 mg daily). Within a further 12 hours, 75 patients (48%) reverted to sinus rhythm, 24 within one hour. Thus 120/201 patients (60%) reverted to sinus rhythm within 14 hours of commencing therapy. Reversion rates of those patients with both atrial fibrillation and flutter (AF/AFL) were significantly lower than those with AF (p less than 0.001) or AFL (p less than 0.02) alone. A further 70 patients reverted to sinus rhythm in one to 13 (mean four) days on continued drug therapy. Elective cardioversion restored sinus rhythm in six subjects. Atrial arrhythmias persisted in five patients (2.5%) at hospital discharge. Side-effects of disopyramide were noted in 19% of patients. Urinary retention was common (11.5%). Four patients with atrial flutter developed 1:1 atrioventricular conduction with the disopyramide loading dose. One patient with atrial fibrillation developed ventricular tachycardia during injection of the loading dose of disopyramide, but was successfully cardioverted to sinus rhythm. Two further patients developed significant hypotension (less than 90 mmHg systolic). Disopyramide is effective in the treatment of post-operative atrial tachyarrhythmias, but its routine use in this situation may be associated with an unacceptably high incidence of side-effects. PMID- 3859261 TI - Sheath impaction as a cause of defective intra-aortic balloon pump action in man. AB - Intra-aortic balloon counterpulsation became ineffective in a 63 inch (160 cm) 14 year old girl while console operation proceeded almost normally. The problem was simulated in a hydraulic model of the aorta and could be reproduced when the proximal end of the balloon engaged in the introducing sheath. Measurements of the balloon catheter and sheath against the patient indicated that such engagement had occurred during counterpulsation. The findings provide an explanation for apparent catheter 'kinkage' in other patients where there was difficulty running the Kontron console in automatic mode. Problems are preventable by total or partial withdrawal of the inserting sheath. PMID- 3859262 TI - Legionella pneumophila and water temperatures in Australian hospitals. AB - Thirty-four samples of warm waters from 12 psychiatric centres in Victoria and New South Wales were examined for legionellae by guinea-pig inoculation. Legionella pneumophila was isolated from 20 of the samples collected from ten of the establishments investigated. The detected prevalence proportion of L. pneumophila in waters of temperatures 36 to 43 degrees C was 0.9 (18/20), whereas the prevalence in waters of temperatures 45 to 54.2 degrees C was 0.14 (2/14). The two 'positive' waters within the latter range showed evidence of low numbers of L. pneumophila. No significant antibody titres to relevant serogroups were detected in the 112 exposed residents tested from seven psychiatric hospitals in New South Wales. The findings show that the temperature range with the greatest prevalence of L. pneumophila in warm waters is 36 to 43 degrees C. The presence of legionellae in these warm water-distribution systems contrasts with their absence from the water-distribution systems of Victorian hospitals in an earlier survey and underlines the value and simplicity of the usual Australian practice of maintaining hospital hot water temperatures at about 70 degrees C in the control of L. pneumophila. PMID- 3859263 TI - Subcutaneous emphysema: a rare complication of fibreoptic sigmoidoscopy. AB - Fibreoptic sigmoidoscopy is a commonly used technique. However, it is not without complications. We report the rare occurrence of subcutaneous emphysema, mediastinal emphysema, and pneumoperitoneum following routine sigmoidoscopy. PMID- 3859264 TI - Nasal mucosal involvement in ulcerative colitis. AB - A patient with ulcerative colitis, sclerosing cholangitis, and mouth ulceration, developed an unusual lesion involving the nasal mucosa. This was thought to represent another extra-intestinal manifestation of inflammatory bowel disease. PMID- 3859265 TI - Right ventricular infarction, bradyarrhythmias, and cardiogenic shock: importance of atrial or atrioventricular sequential pacing. AB - We report two patients with inferior myocardial infarction, complicated by bradyarrhythmia, hypotension, and clinical evidence of right ventricular infarction. Conventional therapy of volume expansion and inotropic support was insufficient to maintain an adequate blood pressure. Sequential atrioventricular (AV) pacing for AV block (Case 1) or atrial pacing for junctional bradycardia (Case 2) resulted in immediate and sustained improvement in blood pressure and clinical indices of perfusion. We recommend consideration of these pacing modes in patients with inferior infarction with evidence of right ventricular infarction, bradyarrhythmia, and cardiogenic shock. The likely mechanism of improvement is by restoration of atrial transport with consequent improvement in ventricular function. PMID- 3859266 TI - Respiratory syncytial virus and heart block--cause and effect? AB - A child aged 3 years who developed a respiratory syncytial virus infection is described. His admission was complicated by the development of an irregular pulse. He initially had a variable first or second degree heart block with transient electrocardiographic evidence suggestive of pericarditis and/or myocarditis and later developed complete heart block. He has remained asymptomatic for the past four years. A search for other causes of the heart block proved negative. It is tempting to suggest an association between the acute RSV infection and the development of the heart block but such an association at this stage remains speculative. PMID- 3859267 TI - Infantile complete heart block associated with maternal Ro(SS-A) ribonucleoprotein autoantibodies: report of two cases. AB - Two cases of congenital complete heart block arising during pregnancy were observed in association with a circulating maternal autoantibody to the soluble ribonucleoprotein Ro(SS-A). Neither mother had clinical evidence of Sjogren's syndrome or systemic lupus erythematosus usually associated with anti-Ro. However, both had a previous history of first-trimester abortion and laboratory evidence of autoimmunity, and one gave a history of sialadenitis. Maternal anti Ro antibodies may be predictive of infantile heart block when present in pregnant women with overt or suspected multisystem autoimmune disease. PMID- 3859268 TI - Rapidly progressive fatal pulmonary infiltration by lymphoma. AB - Two patients with diffuse lymphoma, one diffuse large cell and the other diffuse mixed, large and small cell, developed an illness characterised by a high swingeing fever and a pulmonary infiltrate. In both patients there was clinical evidence of chemotherapy-induced tumour response elsewhere at the time lung infiltrates progressed. Blood and sputum cultures, bronchial washings, and, in one case, trans-bronchial lung biopsy did not establish a diagnosis and there was progressive clinical deterioration. Post mortem examination showed widespread involvement of both lungs with lymphoma. The differential diagnosis of fever and pulmonary infiltrates in patients with diffuse lymphoma is discussed, in particular the possibility of this being due to rapidly progressive lymphoma. PMID- 3859269 TI - Asthma due to insecticide sensitivity. AB - Two patients are reported in whom asthma was precipitated by exposure to synthetic organophosphorous insecticides. Investigation showed no evidence of systemic poisoning or cholinesterase inhibition and indicated that the asthmatic reactions may have been due to a sensitivity response. The mechanism of this response is unknown but it was inhibited by corticosteroids in one patient. A history of insecticide exposure was obtained from the affected patients only after careful questioning and indicates the need for awareness that sensitivity to insecticides may precipitate asthma and that little exposure is necessary to elicit a response. PMID- 3859270 TI - Unusual transformations of renal involvement in systemic lupus erythematosus. AB - The clinical course of a woman with systemic lupus erythematosus demonstrated that renal involvement in this disease can change, both in the predominant site of renal injury and in the pattern of glomerular lesions. Over 50 months she had first tubulo-interstitial lupus nephritis with no glomerular change, then a membranous nephropathy with disappearance of tubulo-interstitial inflammation, and finally crescentic glomerulonephritis. This case emphasizes the need for close follow-up of all lupus patients regardless of their initial renal manifestations and pathology. PMID- 3859271 TI - Zinc abnormalities in fulminant hepatic failure. AB - Zinc is an important trace metal and, in liver disease, abnormal zinc metabolism has been reported. In this study of patients with fulminant hepatic failure progressing to grade IV encephalopathy, plasma zinc concentrations fell during the illness to reach levels significantly below normal; during this time urinary zinc excretion was markedly elevated. PMID- 3859272 TI - Charcoal hemoperfusion treatment of severe theophylline toxicity. AB - A 38 year old man was admitted eight hours after taking ten grams of theophylline. The plasma concentration of theophylline on admission was 732 mumol/l. In view of the patient's continuing clinical deterioration, charcoal hemoperfusion was undertaken. This led to a rapid fall in plasma theophylline concentrations and improvement in clinical signs. It is suggested that charcoal hemoperfusion has a role in the severely theophylline toxic patient in whom standard conservative measures are failing. The patient's hyperglycemia, metabolic acidosis, and hypokalemia are discussed. PMID- 3859274 TI - Ventilatory control in two asthmatics resuscitated from respiratory arrest. PMID- 3859273 TI - Dilated cardiomyopathy in acromegaly. PMID- 3859275 TI - Acute epiglottitis in childhood: report of an increased incidence in Victoria. PMID- 3859276 TI - Corynebacterium pseudotuberculosis abscesses in a young butcher. PMID- 3859277 TI - Isolation of Legionella pneumophila serogroup 6 in Australia. PMID- 3859278 TI - Carcinoma of the urinary bladder in patients receiving cyclophosphamide. PMID- 3859279 TI - New concepts in management of neutropenia. AB - Neutropenia is a life-threatening sequel of hematological disorders and a dominant factor limiting the dosage of cytotoxic chemotherapy. The role of the neutrophil is of such importance in defence against microbial invasion that measures that modify the behaviour of residual hemopoietic tissue to promote a modest increase in neutrophils, can confer considerable benefit by reducing the frequency and severity of infection. Such a change can be mediated in bone marrow depression by diversion of more progeny of immature precursors into the neutrophil series, or by enhancement of the stimulatory drive operating on neutrophil production. The former effect can be achieved by hypertransfusion of red cells to reduce the demand on the limited precursor population for cells of the erythroid series. The latter effect can be achieved by administration of lithium carbonate. Neutropenia caused by autoimmune injury to the neutrophil series can also be successfully modified by measures which suppress the underlying immune dyscrasia or the function of the reticulo-endothelial system. Corticosteroid administration and splenectomy can be helpful in certain specific types of neutropenia. Administration of cyclophosphamide and azathioprine has both mutagenic and marrow suppressive potential, but can induce remissions in severe chronic isolated neutropenia and in systemic lupus erythematosis. PMID- 3859280 TI - Do Vietnam veterans suffer from toxic neurasthenia? AB - This paper evaluates the claim that Vietnam veterans with psychiatric disorders are suffering from toxic neurasthenia--a neurasthenic syndrome caused by exposure to pesticides while serving in Vietnam. PMID- 3859281 TI - The costs of schizophrenia. PMID- 3859282 TI - Parasuicide and depression: a comparison of clinical and questionnaire diagnoses. AB - The frequency with which depressive disorder is diagnosed in parasuicide varies. It has been suggested that when observer bias is removed and a depression questionnaire employed, a greater number of young women who attempt suicide will be designated as depressed than would be expected on the basis of previous clinical reports. Our study compared clinical diagnoses made according to Feighner's research diagnostic criteria or DSM III with the categorisations obtained by the Levine-Pilowsky Depression questionnaire (LPD). Fifty-one patients, 34 female and 17 male, were studied, 31.4% having a primary Major Depressive Disorder and 23.5% secondary depression as clinical diagnoses. The LPD categorised 72.5% as depressed. Comparison of the clinical diagnoses with questionnaire data suggests that the LPD is overinclusive and not as specific as clinical diagnosis. Alcohol and substance abuse disorders accounted for almost one-third of the diagnoses and are therefore an important concomitant of parasuicide. PMID- 3859283 TI - Psychotherapy: the treatment of choice for neurotic/reactive depression? AB - A recently published paper by Prioleau and colleagues has questioned whether the benefits of psychotherapy exceed those of placebo in real patients. A critique of that paper is presented drawing attention to key methodological weaknesses, to the subjective interpretation of the meta-analysis data, and to the selective and tendentious presentation of the authors' conclusions. Arguing that psychotherapy is best evaluated in relation to a limited group of conditions, and to disorders in which high efficacy is claimed, controlled studies of psychotherapy for neurotic and reactive depressive disorders are reviewed. The view that psychotherapy may have a key effect in influencing the natural history of these depressive disorders is explored. PMID- 3859284 TI - Admissions to a prison psychiatric unit. AB - Fifty consecutive admissions to the psychiatric division in a central metropolitan goal were given DSM III diagnoses and their psychiatric, social and criminal histories analysed. Seventy-two per cent suffered from schizophrenic, affective or organic mental illness, 56% had chronic physical disabilities and 84% had had previous in-patient treatment in either hospital or prison or both. Fifty-four per cent exhibited psychopathology that most clinicians would have thought required urgent attention. Of the current offences committed by this group 54% were against the person (murder, assaults, sex offences and robbery). A significant proportion of these were committed by a distinct subgroup composed of socially isolated schizophrenics with no prior convictions, no physical illness, apparently normal premorbid personalities, and a greater current level of psychiatric disturbance. It is argued that the group as a whole, and this subgroup in particular exemplify the problems of the psychiatrically disturbed offender. Prison psychiatric facilities are inadequate for the range of functions they are being asked to serve and their token placement in the correctional services by-passes many important clinical, social and legal issues. PMID- 3859285 TI - Family admission policy in a child psychiatric unit. AB - The literature on residential admissions of whole families to psychiatric facilities is reviewed. Over the past decade, several child and family psychiatric centres have become the focus of innovative family admission programs. When a child or family presents with serious psychiatric problems, the availability of such programs dramatically increases the effective assessment and treatment options available. The benefits of a whole family admission policy are outlined and illustrated by a case example. In some cases, a brief family admission circumvents the need for a lengthy admission of the child alone. Disadvantages and contraindications are described. The adoption of a set of criteria and a specific policy for family admissions in a child psychiatric residential unit has challenged its organisational structure. The conceptual framework applied to requests for admission has broadened and been complemented by creative program development within the centre for children and families. PMID- 3859286 TI - The psychosexual histories of young women with bulimia. AB - While it is known that anorexia nervosa patients show a wide range of sexual knowledge, attitudes and practices, the psychosexual histories of bulimia patients have not been studied. In this paper the psychosexual histories of 20 bulimic patients and 20 matched control subjects are presented. Bulimic patients were more likely to experience orgasm with masturbation, were more likely to have experimented with anal intercourse, and were more likely to describe their libido as 'above average.' Control subjects were more likely to experience orgasm during sexual intercourse. Bulimic patients associated high body weights with unattractiveness, and tended to withdraw from social and sexual activity at high weights. In other aspects of their sexual behaviour, and in their attitudes to sexual matters, the two groups were similar. PMID- 3859287 TI - Psychogenic erectile impotence--a useful or a misleading concept? AB - Psychological factors alone may not fully explain some cases of apparently purely psychogenic acute situational impotence. Chronic impotence is often due to a combination of aetiological factors. Erectile selectivity is not a reliable means of diagnosing purely psychogenic impotence. Nocturnal penile tumescence monitoring is not absolutely reliable in making a distinction between organic and psychogenic impotence. The either/or concept of impotence being organic or psychogenic should be abandoned as serious errors can be made by adhering to it. PMID- 3859289 TI - The dexamethasone suppression test in elderly, non-depressed patients with dementia. AB - Attempts have been made to use the dexamethasone suppression test (DST) to distinguish patients who have a primary depressive disorder from those suffering a degenerative cerebral disorder. It has been suggested however, that organic brain damage reduces neuroendocrine sensitivity and can be associated with failure to suppress on the DST. This study investigates the DST in 21 patients, over 65 years, with dementia but no evidence of depression on a variety of clinical criteria. Seven patients had abnormal DSTs. PMID- 3859288 TI - Therapy managing in Botswana. AB - Varied and apparently ideologically incompatible systems of health care are available in many developing countries. Patients move freely between them, receiving care serially or simultaneously from different types of healers. Therapy managing is an anthropological term used to describe how choice of health care is made by an informal group that forms around the patient. The author's experiences while running a community-based psychiatric treatment program in Botswana are discussed in terms of his interaction with patients' managing groups. PMID- 3859290 TI - Restraint, obesity and bulimia. PMID- 3859291 TI - Cognitive restructuring and response prevention in the treatment of bulimia nervosa. PMID- 3859292 TI - Erythrocyte encapsulated thiosulfate sulfurtransferase. PMID- 3859293 TI - Biochemical characterization of arylsulfatase-C isozymes in human fibroblasts. AB - Arylsulfatase-C and sterol sulfatase were thought to be identical enzymes whose X linked locus escapes inactivation. However, recent evidence shows that they are not identical but that arylsulfatase-C in human fibroblasts exists in two isozymic forms, designated as slow and fast. We now report that the two forms are enzymatically different. When assayed with an artificial fluorogenic substrate, the slow form showed a pH optimum of 8.00 and a Km of 228 microM. In contrast, the fast form showed a pH optimum of 7.67 and a Km of 86.7 microM with substrate inhibition occurring above 0.33 mM. The heat stability of the fast form was slightly below that of the slow form. Polyclonal antibodies raised against the slow form did not cross-react with the fast form. Hence, the two isozymic forms of arylsulfatase-C are enzymatically and structurally different and the slow form is associated with sterol sulfatase activity. PMID- 3859294 TI - A modified Ecteola cellulose assay for M and P phenol sulfotransferase. AB - The development and applications of a modified Ecteola cellulose, ion exchange assay for phenol sulfotransferase (EC 2.8.2.1, PST) are described. Mixtures containing dopamine or phenol and 35S-labeled 3'-phosphoadenosine-5' phosphosulfate (PAPS) were incubated with 100,000 g supernatant solution from human frontal cortex and applied to 0.5 X 2 cm columns of Ecteola cellulose. Dopamine sulfate was eluted with 3 ml of distilled water, while phenyl sulfate, inorganic sulfate and unreacted PAPS were eluted with successive step gradients of 5, 20 and 200 mM NH4HCO3. The solution volume for phenyl sulfate was 11 ml, while those for inorganic sulfate and PAPS were both 6 ml. The new assay method yielded apparent Km values for dopamine, 3-methoxytyramine, tyramine and norepinephrine similar to those obtained by other methods. Comparison of the activities of various amine substrates at a concentration of 20 microM showed that dopamine was the preferred substrate, followed in decreasing order of relative activity by 3-methoxytyramine, norepinephrine, tyramine and octopamine. When mixed substrate inhibition of dopamine sulfation by phenol was examined, phenol was found to effectively inhibit dopamine sulfation over a range of 0.1 to 10 mM. The procedure described in this paper offers a number of significant advantages over currently available assays: these include a rapid, simple product isolation procedure and a complete, discrete separation of the radiolabeled products and reactants. This property allows the detailed study of the flux of radiolabel through the enzymatic system and also makes alternative substrate inhibition studies possible. PMID- 3859295 TI - Isolation from Cannabis sativa L. of cannflavin--a novel inhibitor of prostaglandin production. AB - The isolation from Cannabis sativa L. of an inhibitor of prostaglandin (PG) E2 production by cultured rheumatoid synovial cells is described. This agent, for which the name Cannflavin has been coined, is distinct from cannabinoids on the basis of isolation procedure, preliminary structural analysis and biological properties. The activity of Cannflavin has been compared with several established anti-inflammatory drugs and the major cannabinoids. PMID- 3859296 TI - Induction of haemoglobin synthesis in the human leukaemia cell line K562 by monomethyltriazenes and imidazotetrazinones. AB - The effect of a group of imidazotetrazinones and alkyltriazenes on the growth and the induction of differentiation associated properties in K562 human erythroleukaemia cells has been investigated. Only 8-carbamoyl-3 methylimidazo[5,1-d]-1,2,3,5-tetrazin-4(3H)-one and a monomethyltriazene induced the formation of benzidine-positive cells, and a linear relationship was observed between growth inhibition and the percentage of haemoglobin producing cells in the culture. However, growth inhibition alone was insufficient for induction of haemoglobin synthesis since other members of the series inhibited growth without substantially increasing the number of haemoglobin-producing cells. Induction was accompanied by an increase in cell size, and appeared not to arise by selective toxicity to the original non-differentiated cell compartment followed by clonal expansion of the differentiated cells. These results suggest that methylating agents are more effective than ethylating agents in the alteration of gene expression. PMID- 3859297 TI - [Economic implications: acquired immunodeficiency syndrome]. PMID- 3859298 TI - Joint recommendations on secondary prevention for persons with clinical coronary heart disease. International Society and Federation of Cardiology. PMID- 3859299 TI - [Angiocardiographic diagnosis. Tricuspid atresia, type IB]. PMID- 3859300 TI - Echocardiography cases. PMID- 3859301 TI - Food nutrient interaction. PMID- 3859302 TI - Immunosubversive role of PGE2 in tumor bearing mice. AB - The immunosuppressive activity of tumor cells was studied in vivo and in vitro using C57BL/6 mice and Lewis lung carcinoma (3LL) cells. The SRBC immunization of tumor-bearing mice in vivo gave a lower number of PFC than the control mice. In vitro, employing the Mishell and Dutton technique, the primary immune response of splenocytes from tumor-bearing mice was significantly reduced. The in vitro primary immune response of normal splenocytes was also reduced when the tumor cells or supernatants of tumor cell cultures were present during SRBC immunization. 3LL cells synthesize a large quantity of PGE2 which was also demonstrated in the supernatants of 3LL cell cultures. Nevertheless, as the addition of indomethacin, a potent inhibitor of the prostaglandin synthesis, only partially reduces the tumor cell immunosuppressive action, prostaglandins are conceivably only one of the factors responsible for the immunodepression exerted by the tumor cells. PMID- 3859303 TI - AIDS: safeguards, not panic. PMID- 3859304 TI - 'The longevity of occlusal amalgam restorations in first permanent molars of child patients'. PMID- 3859305 TI - Severe hypodontia in an eight-year-old child. PMID- 3859306 TI - Bacteraemia consequential to sialography. PMID- 3859307 TI - The relative solubilities of four modern glass-ionomer cements. PMID- 3859308 TI - The scientific basis of dental health education. A Health Education Council Policy Document. PMID- 3859310 TI - 'Medical or physical management of facial muscle and joint pain?'. PMID- 3859309 TI - Medical or physical management of facial muscle and joint pain? A dialogue. PMID- 3859311 TI - 'Antagonists to the benzodiazepines'. PMID- 3859312 TI - Multiple deaths due to hepatitis B related to dental treatment. PMID- 3859313 TI - Why we should all have an SRH test. PMID- 3859314 TI - Care for older people. PMID- 3859315 TI - Calcium hydroxide: root resorption and perio-endo lesions. PMID- 3859316 TI - Angina pectoris presenting as pain of the soft palate. PMID- 3859317 TI - Is antibiotic prophylaxis required for dental patients with joint replacements? PMID- 3859318 TI - Prostaglandin F2 alpha in benign and malignant breast tumours. AB - Prostaglandin F2 alpha (PGF2 alpha) was determined by radioimmunoassay in 57 breast carcinomata, 16 fibroadenomata, and 33 sclero-cystic-disease (SCD) specimens. In 41 cases of carcinoma and 10 cases of fibroadenoma, histologically non-malignant tissue was also obtained from the same breast. PGF2 alpha levels were significantly elevated in breast cancer when compared with the normal tissues and benign diseases (P less than 0.005 for each group). High PGF2 alpha levels were positively correlated with differentiation, positive oestrogen and progestagen receptor status, and low mitotic index. Tumours with good prognosis (less than 20 mm, negative lymph nodes, some degree of differentiation) showed significantly higher PGF2 alpha levels than tumours with a bad prognosis (greater than 20 mm, positive nodes and undifferentiated). A tendency for elevated PGF2 alpha levels was observed with negative lymphatic permeation, postmenopausal status, low grade of nuclear and cellular polymorphism and high degree of elastosis and fibrosis. No correlation was observed between PGF2 alpha levels and host-cell reaction. Plasma levels of 15-keto-13, 14-dihydro-PGF2 alpha were not elevated in cancer patients when compared with the SCD-group. The present study demonstrates that PGF2 alpha levels are high in tumours with good prognosis. However, since other authors have suggested that a high PGE2 production is a bad prognostic index, it is possible that conversion of PGE2 to PGF2 alpha by 9-keto reductase explains this relationship. Nevertheless, the presented results question the unrestricted use of prostaglandin-synthesis-inhibitors in the treatment of breast cancer. PMID- 3859319 TI - Prognostic factors in the myelodysplastic syndromes: importance of initial data on peripheral blood counts, bone marrow cytology, trephine biopsy and chromosomal analysis. AB - An analysis of clinical, haematological, histological and cytogenetic data was performed in 85 consecutive patients with myelodysplastic syndromes (MDS). The criteria for diagnosis of refractory anaemia (RA), acquired idiopathic sideroblastic anaemia (AISA) and chronic myelomonocytic leukaemia (CMML) were clearly defined, since the inclusion criteria provided by the FAB co-operative group are imprecise. None of these patients has received chemotherapy during the follow-up period. The median survival of the whole group was only 15 months, with less than 10% of the patients surviving after 5 years. Fifteen patients (17.6%) were still alive at time of analysis, 31 (36.5%) have developed acute myeloid leukaemia (AML) and only one of them is still alive; 30 (35.3%) died of infectious and/or haemorrhagic complications. Patients who developed AML had a shorter survival (median survival time 9.5 versus 15 months) but this difference was not significant (P = 0.10). Factors with prognostic value are in order of significance: abnormal localized immature myeloid precursors (= ALIP) in the trephine biopsy, circulating myeloblasts, excess of blasts in the bone marrow smears, age, FAB classification and granulocyte count. In comparison to refractory anaemia with excess of blasts (RAEB), CMML and RAEB in transformation (RAEBt), patients with RA and AISA had a lower incidence of evolution to AML (11% versus 56%), but a higher mortality rate from infections and/or bleeding (59.2% versus 29%). ALIP negative cases were only found among patients with RA and AISA, whereas ALIP positivity was observed in all cases of RAEB and RAEBt, in 10/11 patients with CMML and in almost half the cases of RA and AISA. In RA and AISA patients survival was significantly different between ALIP positive and ALIP negative cases (P = 0.009). Among MDS patients, ALIP negative cases developed significantly less AML than ALIP positive cases (5% versus 44%), but a similar percentage of mortality from infectious and/or haemorrhagic complications was seen in both groups (33% versus 36.5%). Chromosomal analysis proved to be of no significant prognostic value, although a trend for shorter survival was observed in patients with complex karyotype anomalies or without mitoses. Because of their prolonged survival, antileukaemic chemotherapy is contra-indicated in ALIP negative patients (median survival 50 months). Nevertheless they only constitute a minor subgroup of MDS cases. Prognosis in ALIP positive patients is poor (median survival 12.5 months); in these patients therapeutic trials with cytostatic drugs or with inducers of differentiation of myeloid precursor cells seem to be justified. PMID- 3859320 TI - Control of lysozyme gene expression in differentiating HL-60 cells. AB - We have investigated the control of lysozyme gene expression in HL-60 cells induced to differentiate into macrophage-like cells with phorbol myristate acetate (PMA). Differentiation, as evidenced by cellular adherence, and morphological changes corresponded temporally to an increase in nonspecific esterase activity. The lysozyme concentration in the medium of uninduced HL-60 cells was 10 micrograms/10(7) cells, increasing to a maximum of 46 micrograms/10(7) cells after 48 h incubation with PMA (16 nM). At 72 h the lysozyme concentration decreased to 16 micrograms/10(7) cells. Intracellular lysozyme activity remained constant throughout differentiation. If HL-60 cells were exposed to PMA for 24 h, washed, then maintained in normal medium, they differentiated normally, confirming their irreversible commitment to differentiate. The increase in lysozyme secretion by these cells, however, is markedly blunted suggesting that continued PMA treatment of differentiated cells is required for their secretion of lysozyme. There is no change in the rate of extracellular degradation of lysozyme during differentiation. The level of lysozyme mRNA does not correlate directly with the amount of lysozyme secreted into the medium. Hybridization of uninduced HL-60 cell RNA with a chicken lysozyme cDNA probe demonstrates moderate hybridization. There is a modest (five fold) increase in lysozyme mRNA between 0 and 36 h of exposure to PMA, corresponding to the burst of lysozyme secretion by these cells. The lysozyme mRNA decreases to a level which is lower than the original baseline by 72 h, when the cells are still secreting substantial amounts of lysozyme. These data suggest that both transcriptional and post-transcriptional controls are operative in the control of lysozyme gene expression during the differentiation of HL-60 cells. They also imply that lysozyme secretion is not a necessary component in the macrophage-monocyte differentiation of these cells. PMID- 3859321 TI - A myelodysplastic syndrome preceding acute lymphoblastic leukaemia. AB - The bone marrow of a patient with pancytopenia showed dyserythropoiesis, dysmegakaryocytopoiesis and 13% blasts. The patient was hypertransfused and the pancytopenia resolved completely for 1 month, while the blastic infiltration in the bone marrow remained. Three months later a frank acute lymphoblastic leukaemia developed. PMID- 3859322 TI - Emperipolesis of granulocytes within megakaryocytes. PMID- 3859323 TI - Fuchs's heterochromic cyclitis and posterior capsulotomy. AB - We report a case of intractable glaucoma following an uncomplicated secondary posterior capsulotomy in a 48-year-old male with Fuchs's heterochromic cyclitis. The patient had been free of inflammation and glaucoma since cataract extraction 27 years previously. We also report the results of phenotypic analysis of lymphocytes removed from the anterior chamber. PMID- 3859324 TI - Cataracts in childhood leukaemia. AB - The incidence and severity of cataract were studied in 37 children who had completed treatment for acute lymphoblastic leukaemia. Twelve (32%) had posterior subcapsular lens opacities. Treatment had included corticosteroids and cranial irradiation, but no dose relationship was evident. The boys were more severely affected than the girls. Although none of the lens opacities was optically significant, clinicians should be aware of the potential risk to vision. PMID- 3859325 TI - A simple orthodontic appliance for dealing with a common canine problem. AB - A case report is presented. It is of the treatment of a canine which has erupted into a difficult position (Figs 1a, b). It shows how the analysis of the movement required involves an understanding of the theoretical principles of 'centre of mass' and 'line of force' and how when these principles are applied a relatively simple removable-cum-fixed appliance can be designed to execute the movements required. PMID- 3859326 TI - Internal resorption complicating orthodontic tooth movement. PMID- 3859327 TI - Nature of relapse after surgical mandibular advancement. AB - Pre-operative, post-operative and follow-up cephalometric records of 16 cases of mandibular retrognathia treated by surgical mandibular advancement were analysed retrospectively. The results showed good mean stability in the mandibular advancement with variable individual relapse. The pre-operative mandibular plane angle, magnitude of the advancement and post-operative increase in the posterior lower face height were the variables chiefly related to relapse. There appeared to be limited control over the posterior segment which was liable to distraction and rotation. The follow-up changes were time linked. Both mechanical and biological factors are postulated to explain the relapse. PMID- 3859328 TI - Nailbiting: frequency and association with root resorption during orthodontic treatment. AB - The purpose of the present investigation was to determine the incidence and intensity of nailbiting and its possible role in root resorption during orthodontic treatment. A sample of 1365 boys and girls, aged 13-15 years old, were investigated about their nailbiting habits. The possible effect of nailbiting on root resorption during orthodontic treatment was evaluated by radiographic examination of two groups, matched with regard to overjet, age, sex, length and type of orthodontic treatment with fixed orthodontic appliances, one group consisting of 21 severe nailbiters and the other a group of 21 patients without the habit. Replies to questionnaires distributed to 340 boys and girls showed that the incidence of nailbiting was 45 per cent. The habit of severe nailbiting among 1025 of the children investigated was registered in 14.3 per cent. There was no significant difference regarding the habit between boys and girls. The apical root resorption index was significantly higher in the severe nailbiters before (p less than 0.01) and after (p less than 0.001) orthodontic treatment. PMID- 3859329 TI - Radiographs taken for orthodontic purposes in general practice. AB - This paper deals with the orthodontic aspects of a wider survey undertaken to determine the use of radiographs in general dental practice in the county of Avon. During the sample week 218 patients had radiography for orthodontic purposes of whom 184 were below the age of 15 years. There were marked differences in the radiographs used by general practitioners and specialist orthodontists and the possible reasons for these differences are discussed. PMID- 3859330 TI - Temporary mental paraesthesia: an unusual complication of orthodontic treatment. PMID- 3859331 TI - A comparison of two- and three-dimensional incisor angles. AB - Two- and three-dimensional incisor angulations are compared in 40 patients using lateral radiographs and direct dental cast measurement using the Reflex Metrograph coupled to a computer. The two-dimensional upper and lower incisor angulations to the occlusal plane were also compared by the two methods. It was found that: The two-dimensional radiographic and three-dimensional dental cast inter-incisor angulation showed a significant difference at a probability level 0.01 greater than p greater than 0.001. The two-dimensional radiographic and two dimensional dental cast upper left and right incisor angulations to the functional occlusal plane showed a significant difference at a probability level of 0.01 greater than p greater than 0.001. The significant differences can be attributed to the measurement of the incisor crown angulation in the dental cast measurement and the incisor tip and apex assessment in the radiographic technique. The system of dental cast measurement arguably provides a more realistic and reliable assessment of incisal angles than conventional radiographic measurement techniques. PMID- 3859332 TI - Root resorption: the aggressive, unerupted second premolar. AB - Three cases of first molar root resorption, due to impacted maxillary and mandibular second premolars, presented over a period of 5 months. It is suggested that this may not be such an uncommon occurrence as is generally believed. The clinical situations in which the unerupted second premolar may start resorbing first molar roots are described and methods of identifying and treating this problem suggested. PMID- 3859333 TI - Structural basis of anthracycline selectivity for unilamellar phosphatidylcholine vesicles: an equilibrium binding study. AB - Fluorescence anisotropy titration was used to determine the equilibrium binding affinities of several anthracycline antitumor antibiotics for sonicated dimyristoylphosphatidylcholine (DMPC) and dipalmitoylphosphatidylcholine (DPPC) vesicles at 27.5 degrees C. Eight daunomycin analogues, all differing from the parent by one structural change in the aglycon portion of the molecule, as well as four anthracycline congeners modified in the amino sugar were studied. Double reciprocal plots were used to determine overall binding affinities (K). It was shown that structural changes in both the aglycon and amino sugar portions of the daunomycin molecule strongly modulated K values for DMPC and DPPC bilayers. For modifications in the aglycon portion of an anthracycline, a correlation between drug hydrophobicity and membrane affinity was observed. The number of binding sites per phospholipid molecule (n) and the apparent association constant (Kapp) where K = nKapp, were determined at several temperatures for adriamycin, daunomycin, and carminomycin. The n values were found to be independent of temperature for fluid-phase DMPC or solid-phase DPPC bilayers. The Kapp values (25 degrees C) ranged from (0.82-4.4) X 10(5) M-1 for DMPC vesicles to (4.4-7.3) X 10(5) M-1 for DPPC vesicles. Although the Kapp values for the three drugs were similar for a particular bilayer, major differences were noted in the values of n and, therefore, in the overall vesicle affinities (nKapp). van't Hoff plots showed that anthracycline binding was exothermic; in all cases but one binding was accompanied by a decrease in entropy.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3859334 TI - Phospholipid localization in the plasma membrane of Friend erythroleukemic cells and mouse erythrocytes. AB - The distribution of phospholipids over outer and inner layers of the plasma membranes of Friend erythroleukemic cells (Friend cells) and mature mouse erythrocytes has been determined. The various techniques which have been applied to establish the phospholipid localization include the following: phospholipase A2, phospholipase C, and sphingomyelinase C treatment, fluorescamine labeling of phosphatidylethanolamine, and a phosphatidylcholine transfer protein mediated exchange procedure. The data obtained with these different techniques were found to be in good agreement with each other. Phosphatidylcholine, phosphatidylethanolamine, and phosphatidylinositol were found to be distributed symmetrically over both layers of the plasma membrane of Friend cells. In contrast, sphingomyelin was found to be enriched in the outer layer of the membrane (80-85%), and phosphatidylserine appeared to be present mainly in the inner layer (80-90%). From these results, it was calculated that the outer and inner layers accounted for 46% and 54%, respectively, of the total phospholipid complement of that membrane. Analogous studies on the plasma membrane of mature mouse erythrocytes showed that the transbilayer distribution of the total phospholipid mass appeared to be the same as in the plasma membrane of the Friend cell, namely, 46% and 54% in outer and inner layers, respectively. The outer layer of this membrane contains 57% of the phosphatidylcholine, 20% of the phosphatidylethanolamine, 85% of the sphingomyelin, and 42% of the phosphatidylinositol, and none of the phosphatidylserine was present.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3859335 TI - Inhibition of poly(A)-binding protein synthesis in Friend erythroleukemia cells subsequent to heat shock. AB - When Friend erythroleukemia cells (FEC) are incubated at 43 degrees C there is a rapid and nearly complete inhibition of protein synthesis which can be reversed when cells are returned to their normal growing temperature of 37 degrees C. Examination of the recovery of FEC from heat shock indicates that most cellular mRNAs behave as a cohort and return to translation at approximately the same rate. We found a notable exception to this rule in the case of a 78 kDa basic protein (named protein A) whose rate of return to a normal synthetic rate is markedly inhibited subsequent to heat shock. We show that protein A corresponds to the 78 kDa polypeptide commonly found to be associated with the poly(A) tails of mammalian mRNA. PMID- 3859336 TI - Kinetics of dissociation of nogalamycin from DNA: comparison with other anthracycline antibiotics. AB - Stopped-flow spectrometry and simple mixing techniques have been employed to investigate the detergent-induced dissociation of anthracycline antibiotics from natural and synthetic DNAs. Both daunomycin and nogalamycin dissociate more slowly from poly(dG-dC) than from poly(dA-dT) but the difference is much more marked for nogalamycin. With an equimolar mixture of poly(dG-dC) and poly(dA-dT), or with poly(dA-dC).poly(dG-dT), dissociation of nogalamycin occurs very slowly. In all cases the release of antibiotic from a synthetic polynucleotide is a one step process following a single exponential. Dissociation of daunomycin, adriamycin and iremycin from calf thymus DNA is a more complex reaction which requires a two-exponential fit, in contrast to earlier reports, but differences between the behaviour of the three antibiotics are minor. Dissociation of nogalamycin from natural DNA requires a three-exponential fit, is in general far slower, and depends upon the base composition, the level of binding and the time allowed for the complex to equilibrate. It is concluded that sequence selectivity is minimal or lacking for daunomycin, whereas nogalamycin binding is sequence dependent and probably involves migration of the antibiotic between DNA binding sites. There is an inverse correlation between dissociation rate constants and antibacterial potency in simple tests. PMID- 3859337 TI - Inhibition of 3-hydroxy-3-methylglutaryl coenzyme A reductase activity and sterol synthesis by cholesterol sulfate in cultured fibroblasts. AB - Although widely distributed throughout mammalian tissues, the biological function of cholesterol sulfate remains largely unknown. In these studies we have demonstrated that cholesterol sulfate suppresses de novo sterol synthesis in cultured human fibroblasts. It was further shown in these cultured cells that cholesterol sulfate is a potent inhibitor of the enzyme, 3-hydroxy-3 methylglutaryl coenzyme A reductase (mevalonate: NADP+ oxidoreductase (CoA acylating), EC 1.1.1.34), the rate-limiting enzyme in cholesterol biosynthesis and the site at which exogenous cholesterol suppresses endogenous cholesterol synthesis. Because cholesterol sulfate inhibited sterologenesis in steroid sulfatase deficient fibroblasts derived from patients with recessive X-linked ichthyosis, it was inferred that cholesterol sulfate per se and not cholesterol liberated by intracellular desulfation was the inhibitor in these studies. Cholesterol sulfate may be an endogenous regulator of mammalian cholesterol biosynthesis. PMID- 3859338 TI - Hyperbilirubinaemia in neonatal rats after oxytocin or prostaglandin F2 alpha treatment of pregnant rats. AB - Serum bilirubin concentrations were investigated in neonatal rats. High concentrations were found on day 1 falling to adult values by day 4. Oxytocin (500 IU/kg) given subcutaneously to the dams on day 22 of pregnancy increased bilirubin concentrations in neonatal rats. This dose of oxytocin shortened gestational length but increased the neonatal death rate. Oxytocin (500 IU/kg) also increased uterine contractions on day 22 of pregnancy, measured using intrauterine balloons inserted on day 19 of pregnancy. Rats delivered by Caesarian section at the same gestational age as the oxytocin-treated group did not exhibit hyperbilirubinaemia. Prostaglandin F2 alpha (300 micrograms/kg) administered intramuscularly on day 20 of pregnancy was found to advance parturition and produced a small rise in serum bilirubin concentrations in neonatal rats. The rat could serve as a model for investigating the mechanisms of neonatal hyperbilirubinaemia which has been suggested to occur after the use of oxytocin or prostaglandins in the human. PMID- 3859339 TI - E-rosette formation in acute nonlymphocytic leukemia. PMID- 3859340 TI - Reduction in the stearic to oleic acid ratio in leukaemic cells--a possible chemical marker of malignancy. AB - Total lipid extracts of peripheral blood cells from patients with chronic leukaemias were analysed for relative values of saturation of the eighteen carbon chain length fatty acids (C 18 FA). The results are expressed as saturation index (C 18 S:C 18 U) of the saturated C 18 FA (stearic acid) over the unsaturated C 18 FA (oleic, linoleic and linolenic acids). The saturation indices of the white blood cells (WBC) and the red blood cells (RBC) in specimens from 14 patients with chronic granulocytic leukaemia (CGL) and 17 patients with chronic lymphocytic leukaemias (CLL) were significantly and consistently lower than control specimens. It is proposed that the relative increase in the unsaturated oleic acid could prove to be a chemical marker of malignancy reflecting a deficient cellular control of the process of stearic acid desaturation. The theoretical implications of the implied increase in membrane fluidity for the cells are discussed. PMID- 3859341 TI - Intravenous and oral demethoxydaunorubicin (NSC 256-439) in the treatment of acute leukemia and lymphoma: a pilot study. AB - Demethoxydaunorubicin (DMDR), a new anthracycline available both for intravenous and oral administration, was given in 14 cases of leukaemia, non-Hodgkin's lymphoma (NHL) and multiple myeloma (MM) replacing either daunorubicin (DNR) or doxorubicin (DOX) in conventional chemotherapy regimes. In acute leukaemia (6 myeloblastic and 1 common lymphoblastic) there were 5 complete (CR) and 2 partial (PR) remissions; one patient, previously brought into remission with a regime including i.v. DMDR was thereafter maintained in CR with oral DMDR. Among the patients treated with the oral DMDR, 2 NHL cases were treated; 1 patient had a sustained remission of 12 months so far, with DMDR alone; another patient had a CR with a combined regime. In MM, one patient with very advanced disease treated with i.v. DMDR/CHOP did not respond, but three cases treated with oral DMDR plus other drugs showed a partial remission. Toxic effects were limited to brief episodes of nausea and vomiting in a few i.v. treated patients; a prolonged bone marrow depression was observed in one case only. No cardiotoxic effect was recorded. PMID- 3859342 TI - The specificity of the Eating Disorder Inventory. AB - A self-report measure, the Eating Disorder Inventory (EDI), has recently been published. An examination of the responses on the EDI of a sample of psychiatric out-patients who did not have eating problems revealed that many of its subscales may be non-specific in character reflecting the general level of psychological disturbance. PMID- 3859343 TI - The physician as consumer of medical literature. PMID- 3859344 TI - The physician as author of medical information. PMID- 3859345 TI - The future of medical information and medical libraries. PMID- 3859346 TI - Perspectives in geriatric medicine of importance to the psychiatrist. PMID- 3859348 TI - Anesthesia-related maternal mortality. PMID- 3859347 TI - Osteoporosis: current concepts. PMID- 3859349 TI - Reality orientation: full circle. PMID- 3859350 TI - Twenty-five year review of training in internal medicine at a voluntary teaching hospital. PMID- 3859351 TI - Evaluation and management of the rheumatoid foot. PMID- 3859352 TI - Open reduction of infantile displacement of the hip in children under twelve months of age: when, why, how. PMID- 3859353 TI - The formation and regional distribution of prostaglandins D2 and F2 alpha in the brain of spontaneously convulsing gerbils. AB - The distribution of the two major cyclooxygenase products prostaglandin D2 (PGD2) and prostaglandin F2 alpha (PGF2 alpha) in 7 different regions of the brain (medulla, cerebellum, hypothalamus, striatum, midbrain, hippocampus and cerebral cortex) was studied. Basal levels were highest in hypothalamus and cortex. Following convulsions elicited by environmental stress prostaglandin concentrations increased in all areas, with largest increases (10-20-fold) in hippocampus and cortex, reaching 70 ng/g PGD2 in hippocampus and 115 ng/g PGD2 in cortex. These results demonstrate that, during spontaneous seizures, there is a greater increase in prostanoid production in those areas involved in the convulsive process. PMID- 3859354 TI - Neuronal responses in subfornical organ and other regions to angiotensin II applied by various routes. AB - Effects of Angiotensin II (AII) and of signals of hydromineral deficiencies on neuronal firing in the subfornical organ (SFO) and the surrounding regions of the rat were examined. AII was applied in three ways: electrophoresis, intracarotid injection, or intracerebroventricular injection. Seventeen SFO neurons (52%) were facilitated by electrophoretic AII and one (3%) was inhibited (AII-responding neurons). Neurons in other regions (cerebral cortex, nucleus triangularis septi, hippocampus, nucleus periventricularis) were also facilitated (23%) or inhibited (14%). Prostaglandin (PG)F2, a universal vasoconstrictor, produced an effect similar to that by AII on neuronal activity of the SFO and surrounding regions, and this effect was antagonized by (NO2-), a vasoplegic agent. Intracarotid injection of AII caused biphasic facilitation of SFO activity. The second increase correlates with changes in blood pressure. Intraventricular injection of AII caused drastic and long lasting excitation of SFO activity. Simultaneous intraventricular application of NO2- blocked the AII effect on SFO neurons but not on blood pressure. Hypovolemia or cerebrospinal fluid withdrawal that might cause mechanical stimulation of circumventricular organs increased SFO neuronal activity. These results are compatible with the vasoconstriction hypothesis of an indirect effect of AII through change in diameter of the vasa that surround neurons. PMID- 3859355 TI - Fever and jaundice in a 27-year-old woman with acute myelomonocytic leukemia. PMID- 3859356 TI - Those tricky accounts receivable. PMID- 3859357 TI - Dentistry in Saudi Arabia. PMID- 3859358 TI - Nutrient effects on anthracycline production by Streptomyces peucetius in a defined medium. AB - A defined medium was developed for Streptomyces peucetius that optimally contained 0.5 mM magnesium, 1 mM phosphate, 75-125 mM glucose, 10 mM nitrate, and microelements. Poorer results were obtained with nitrite, aspartate, or ammonia as sole nitrogen sources. Other carbon sources which supported best growth and highest anthracycline titers were fructose, maltose, and soluble starch. In each case, substantial residual carbon remained at the end of 6 days, suggesting a lack of catabolite repression by the carbohydrate carbon sources on anthracycline biosynthesis. Studies involving limiting and nonlimiting concentrations of glucose supplemented with arabinose, a poorly utilizable carbon source, indicated that high carbon concentrations were not necessary for osmotic stabilization. Inorganic phosphate was found to have an inhibitory effect on anthracycline production. Furthermore, when cultures at early stages of anthracycline production were spiked with inorganic phosphate, a delay in further anthracycline production resulted until the added phosphate was depleted. A 10% inoculum of stationary phase cells yielded the best growth and most consistent anthracycline production. Spectrophotometric analyses at 495 nm of chloroform--methanol extracted material were also found to be useful for the determination of total anthracyclines in culture extracts. PMID- 3859359 TI - Comparison of maintenance treatment regimens for first central nervous system relapse in children with acute lymphocytic leukemia. A Pediatric Oncology Group study. AB - Eighty-seven children with central nervous system (CNS) leukemia were randomized to receive either induction intrathecal chemotherapy (ITC) and cranial irradiation (CRT) plus maintenance ITC, or induction ITC and craniospinal irradiation (CSpRT) with no maintenance ITC. ITC consisted of six weekly injections of methotrexate, hydrocortisone, and arabinosylcytosine. Also, intensification of systemic induction and maintenance chemotherapy was given. CRT + ITC was given as CRT, 2400 rad in 12 fractions followed by ITC maintenance bimonthly for 2 years. Craniospinal irradiation consisted of CRT + 1400 rad in ten fractions to the spine. Randomization was stratified according to whether CNS leukemia occurred at initial diagnosis of acute lymphocytic leukemia (ALL) (Stratum I, 15 patients), during first bone marrow (BM) remission (Stratum II, 49 patients), simultaneous with first BM relapse (Stratum III, 12 patients), or during second BM remission (Stratum IV, 11 patients). The median follow-up for patients who remain at risk is 15 + months. Eight children (seven on CRT + ITC, one on CSpRT) developed presumed therapy related encephalopathy. In Stratum II, 16 of 29 (55%) patients receiving CRT + ITC experienced adverse events: 3 deaths during continuous complete remission (CCR) and 13 relapses (2 CNS, 1 CNS + BM, 1 BM + testes, and 2 testes) as compared with only 5 relapses in 20 (25%) patients on CSpRT (1 CNS, 1 CNS + BM, 1 BM, and 2 testes). The children on both regimens were comparable for sex, race, age at initial ALL diagnosis, time from ALL diagnosis to first episode of CNS leukemia, systemic therapy both before and after CNS relapse, and number of blasts in the spinal fluid at diagnosis of CNS leukemia. The conclusion is that children with isolated CNS leukemia can achieve prolonged survival with aggressive therapy, and that CSpRT is possibly less toxic and more likely than is CRT + ITC to prevent subsequent BM and testicular relapse (P less than 0.02), but not subsequent CNS relapse (P = 0.7). A possible systemic therapy effect of spinal irradiation is postulated to explain the superiority of CSpRT. PMID- 3859360 TI - Leukemia relapse in long-term survivors of acute leukemia. AB - Between 1964 and 1982, 862 patients with acute leukemia who were collected from medical institutions throughout the country had a survival of 5 years or longer. Their remission has been achieved mainly with a combination therapy of vincristine and prednisone in childhood acute leukemia and daunomycin, cytosine arabinoside, 6-mercaptopurine, prednisone (DCMP) regimen in adult acute leukemia. Among 320 relapsed patients, 88 (38.8%) of 227 children had a primary relapse in the marrow, 85 in the central nervous system (CNS), 37 in the testis/ovary, and 13 in a combined site. The large majority of adult relapsed patients relapsed in the marrow. Ninety-three patients who experienced only one relapse had a much longer prolongation of survival, not yet reaching a median over 14 years after diagnosis, compared to those experiencing two or more relapses. Survival curves in five groups of patients divided by length of maintained remission were investigated by the life table method. In children as well as adults, survival duration in patients on 5 or more years maintained remission was significantly longer than that in the other maintained groups. With respect to relation between frequency of CNS relapse and type of CNS prophylaxis, there was no statistically significant difference between patients who received CNS prophylaxis and patients who did not. However, a better survival was observed in patients who received CNS prophylaxis with cranial radiation plus intrathecal methotrexate. Thus, long-term clinical follow-up might provide important information for the therapeutic strategy against acute leukemia. PMID- 3859361 TI - Candida rugosa in immunocompromised infection. Case reports, drug susceptibility, and review of the literature. AB - Candida rugosa was isolated from two patients. One patient had acute leukemia and developed invasive disease due to this yeast on two occasions while granulocytopenic. Her infection was eventually cured after treatment with amphotericin B. In another immunocompromised patient, the yeast was isolated from the sputum in the presence of a pulmonary infiltrate, but there was no other evidence for a pathogenic role. Antifungal susceptibility testing of the first patient's isolate and three environmental isolates showed all four to be susceptible to amphotericin B, miconazole, and flucytosine, and only the patient isolate was resistant to ketoconazole. These results suggest possibilities for therapy in future encounters. It appears that C. rugosa, a common pathogen in cattle, can be pathogenic in humans under the appropriate circumstances. PMID- 3859362 TI - Low-dose cytosine arabinoside (Ara-C) therapy in the myelodysplastic syndromes and acute leukemia. AB - Twenty-two patients with either a myelodysplastic syndrome or acute nonlymphocytic leukemia were treated with 10-21 days of subcutaneous cytosine arabinoside (Ara-C) (5-10 mg/m2 every 12 hours). There were two complete remissions and ten partial responses. Clinically significant improvements in peripheral blood counts persisted for periods of 8 weeks to greater than 21 weeks. Responses were seen even in patients who had previously proven refractory to conventional induction regimens or high-dose Ara-C. The toxicity, however, was considerable. Nearly all patients developed significant thrombocytopenia. Platelet and red cell transfusion support was required in many cases. The response to low-dose Ara-C therapy seen in patients with the leukemic and myelodysplastic disorders may be mediated by the induction of cell differentiation or a direct cytotoxic effect on a sensitive population of cells. Low-dose Ara-C may provide an alternative therapy in the selected patient with acute nonlymphocytic leukemia or a myelodysplastic syndrome. PMID- 3859363 TI - Loss of the Y chromosome in acute myelogenous leukemia: a report of 13 patients. AB - Thirteen male patients with acute myelogenous leukemia who, on bone marrow chromosome analysis, were missing all or part of the Y chromosome were treated at this institution between 1975 and 1983. Giemsa-banding techniques were performed in 12 cases. Twelve showed -Y in at least 80% of bone marrow metaphases, and one patient had 25% 46,XYqh-. The loss of the Y chromosome was the sole karyotypic abnormality in nine patients, and the remaining four had additional chromosome changes. The peripheral blood lymphocytes were diploid in all except three cases, where no mitotic cells were recovered. The median age was 55 years, eight patients had acute myelogenous leukemia (M2) and five acute myelomonocytic leukemia (M4). Six patients (46%) had an antecedent hematologic disorder. Eleven patients received standard induction combination chemotherapy. Complete remission was achieved in seven patients (63%). Remission bone marrow chromosome analysis showed 100% 46,XY in all seven cases. The median durations of complete remission and survival were 10 months and 12 months, respectively. The review suggests that -Y is a consistent, although uncommon, chromosome marker in acute myelogenous leukemia, associated with an aggressive clinical course and intermediate prognosis. PMID- 3859364 TI - Cytotoxicity of monoclonal antibodies against individually immunophenotyped human leukemic cells. AB - Peripheral blood and bone marrow mononuclear cells from 12 patients with acute myeloid leukemia (AML), 2 patients with acute lymphatic leukemia, and 1 patient with chronic myeloid leukemia in blastic crisis were taken at diagnosis or in relapse. Cells were immunophenotyped with a panel of monoclonal antibodies (Moab) (OKIa, Leu M1, Leu M2, Leu M3, Leu M4, B1, Okt 11, J5) and the same antibodies were used in an in vitro cytotoxicity test. Of the 14 patients, 10 had antibody binding cells, and the percentage of lysed cells was almost equal to that of blasts. The other 4 patients had few binding cells and little lysis. Acute leukemia with and without preceding myelodysplastic features did not differ in immunophenotype. Mean spontaneous release of 51Cr was 12.7% and complement alone caused an additional average release of 11.8%. Four single antibodies together with complement showed a mean 51Cr release of 0.7-32.4% above that found with complement alone. Combinations of Moabs resulted in 51Cr release at least 10% above the single most efficient Moab in 8 out of 12 patients. Not all blast cells showed antibody binding, nor were all antibody-binding cells susceptible to cytotoxicity. Normal bone marrow growth in vitro seemed to be stimulated by factors in complement and in the Moab. When this stimulation was compensated for by adding fetal calf serum, cytotoxicity tests prior to CFUc assays resulted in a mean decrease of 46% of colonies and 25% of clusters in normal bone marrow. CFUc are thus sensitive to the cytotoxicity, although CFU may also be resistant. PMID- 3859365 TI - Effects of pyrimidine antagonists on sialic acid regeneration in HL-60 cells. AB - Because alterations in cell membrane sialoglycoconjugates can affect the behavior of neoplastic cells, we investigated the effects of in vitro treatment with antimetabolites used in cancer therapy on the expression of membrane sialic acid in cultured HL-60 leukemic cells. In these studies, cells were incubated with Vibrio cholerae neuraminidase to remove surface sialic acid. Reappearance of membrane sialic acid during drug treatment was followed (a) by measuring changes in radioactive surface labeling of viable cells with sodium metaperiodate sodium[3H]-borohydride, (b) by measuring the decline in accessible surface galactosyl receptor sites which occurred coincident with membrane sialic acid replacement, and (c) by measuring the incorporation of [3H]glucosamine into membrane-associated neuraminidase-labile sialic acid. We were especially interested in learning whether drugs that affect intracellular pools of cytidine triphosphate (CTP), an important nucleotide intermediate in sialylation reactions, could inhibit regeneration of membrane sialic acid. 3-Deazauridine, a competitive inhibitor of CTP synthetase, depleted CTP pools and curtailed surface membrane resialylation with little or no effect on synthesis of de novo sialic acid from precursor sugars. The addition of cytidine restored CTP pools and sialic acid regeneration. Acivicin, a glutamine antagonist, also depleted CTP pools and curtailed surface membrane resialylation. In addition, it retarded de novo synthesis of sialic acid. The addition of cytidine restored intracellular CTP pools and sialic acid regeneration. However, both cytidine and guanosine were required to restore sialic acid synthesis from precursor sugars. 1-beta-D Arabinofuranosylcytosine, a competitive inhibitor of sialic acid synthetase and of sialyltransferase, inhibited both de novo sialic acid synthesis and membrane resialylation. Only the latter effect was reversed by the addition of exogenous cytidine. Hydroxyurea, an agent shown previously to inhibit glycoconjugate production in hamster fibroblasts, curtailed membrane resialylation and de novo synthesis of sialic acid without depleting CTP pools. Doxorubicin, at levels that caused marked arrest of cell proliferation, had no effect on sialic acid synthesis or expression on the membrane surface. These data suggest that antimetabolites, apart from their cytotoxic effects or effects on cellular growth, may directly inhibit the expression of membrane sialic acid.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3859366 TI - Expression of neoplasia-related proteins of chemically transformed HuT fibroblasts in human osteosarcoma HOS fibroblasts and modulation of actin expression upon elevation of tumorigenic potential. AB - Two sets of abundant cytoplasmic transformation-specific polypeptides, p788/p789 and p219/p220, have been identified by comparing in vitro-transformed human fibroblasts with diploid human fibroblasts. These polypeptides are also expressed by the human fibrosarcoma and osteosarcoma cell lines HT1080 the human fibrosarcoma and osteosarcoma cell lines HT1080 and HOS, respectively. HOS cells, however, synthesize only one of the two electrophoretic forms of each marker set, p789 and p219, at greatly reduced rates compared to the rates of synthesis found for HT1080 cells and the in vitro-transformed cell lines. Induction of expression of these neoplastic marker polypeptides is independent of the activation of a transforming gene that will induce focus formation in confluent mouse 3T3 cell monolayers. Activation of the met oncogene in MNNG-HOS cells and simultaneous elevation of tumorigenic potential did not lead to a significant change in the rate of the 600 most abundant polypeptide species with the exception of one of the two cytoplasmic actin polypeptides. While the normal ratio of beta-to gamma actin which is approximately 2:1 was expressed in "untransformed" HOS cells, MNNG HOS cells synthesized 50% less beta-actin resulting in a 1:1 ratio of beta-actin to gamma-actin. Our finding here, together with our previous characterization of the human beta-actin gene, leads us to predict that one of two functional beta actin genes expressed in HOS cells has been inactivated in MNNG-HOS cells by either a regulatory or structural gene mutation. PMID- 3859367 TI - Oncogene activation in human myeloid leukemia. AB - We have studied by means of DNA-mediated gene transfer the activation of protooncogenes in human myeloid leukemias that represent various stages of myeloid differentiation. DNA from three cell lines, HL-60 (promyelocytic leukemia), Rc2a (myelomonocytic leukemia), and KG-1 (acute myeloblastic leukemia), was capable of transforming NIH/3T3 cells. Hybridization analysis indicated that, in all three tumor cell lines, the N-ras oncogene was activated. The cell lines U-937 ("histiocytic lymphoma") and K-562 (erythroblastic leukemia) yielded no transforming DNA. Fresh leukemia cells derived from an acute myelomonocytic leukemia patient and from a juvenile chronic myelogenous leukemia patient contained an activated N-ras and c-Ki-ras oncogene, respectively. DNA from some other myelogenous leukemia patients was not able to transform NIH/3T3 cells. Our results indicate that hematopoietic tumors of the myeloid lineage may contain oncogenes active in NIH/3T3 cell transformation and that, in particular, the N-ras oncogene may be activated in tumors representing various stages of maturation. PMID- 3859368 TI - Protective effect of cholesterol on Friend leukemic cells against photosensitization by hematoporphyrin derivative. AB - The cytotoxic effects of hematoporphyrin derivative (HPD) on Friend erythroleukemic cells were studied. Upon binding of the porphyrin to the cells, the fluorescence spectra was shifted from 613 to 633 nm regarding the main band and from 676 to 667 nm concerning the secondary band. The kinetics of HPD binding was then determined. Maximum binding already occurred at 60 s after exposure of the cells to HPD. It could be demonstrated that the effect of the photoactivated HPD on cell viability was drug, dose, and light fluorescence dependent. Cellular protein synthesis and Friend virus complex release from the cells were equally inhibited by the photodynamic sensitization of the drug, indicating no specific effect on virus maturation. Since cholesterol affects the fluidity of cell membranes, it was important to study the effect of cholesterol enrichment on the photodynamic sensitization by HPD. It was found that, while a 50% reduction in protein synthesis was monitored following treatment with 20 micrograms of HPD per ml and illumination by a 6-milliwatt white light for 60 s, no inhibition was observed following preenrichment of the cells with 0.5, 1, or 2% of cholesterol hemisuccinate. The same trend of cholesterol protection was demonstrated with longer illumination periods up to 10 min. The protective effect of cholesterol hemisuccinate was also seen using scanning electron microscopy. It is thus concluded that the cholesterol hemisuccinate content of Friend erythroleukemic cell membranes is an important factor in regulating the cytotoxicity of photoactivated HPD. PMID- 3859369 TI - Phase II study of 4-demethoxydaunorubicin in advanced ovarian carcinoma. PMID- 3859370 TI - Hyperphosphatemic renal failure following treatment of acute nonlymphatic leukemia. PMID- 3859371 TI - 3 alpha-hydroxysteroid and 3 beta-hydroxysteroid-oxidoreductase activities in vitro from prostate of isoimmunized rats. PMID- 3859372 TI - [Osteosarcoma. Problems and therapy]. PMID- 3859374 TI - Money can't buy everything--but it sure helps in politics. PMID- 3859373 TI - How to bash a noisy yo-yo and other tales of lobbying. PMID- 3859375 TI - Crisis in our house? PMID- 3859376 TI - Hygienist legislation back again. PMID- 3859378 TI - Advantages of a computer in the operatory. PMID- 3859377 TI - Measuring continued competency--can it be improved? PMID- 3859379 TI - A monovalent cation-sensitive actin-binding factor in a myeloid leukemia cell line. AB - Cell extracts of a murine leukemia cell line, M1, apparently contain three kinds of actin-gelation factors; a filamin-like protein, and 38K-dimer and 105K-dimer proteins. Unlike gelation by the filamin-like protein, gelation by the latter two proteins is inhibited by low concentrations of KCl. Our study of the 38K protein has been reported elsewhere (Takagi, K. et al., J. Biochem. Tokyo 97, 605-616, 1985). We here describe the purification and characterization of the 105K protein. The 105K protein differs from the alpha-actinin group of proteins in its antigenicity, peptide components and Ca2+-insensitivity. The saturated binding ratio of the protein to purified skeletal muscle actin is 1:8; when this ratio exceeds 1:20, gelation takes place. This gelation is inhibited completely by the presence of 25 mM KCl. Electron microscopy revealed that, in the absence of KCl, the 105K protein/actin mixture forms short actin bundles that are accompanied by a meshwork of short single filaments. The presence of 25 mM KCl did not prevent actin-bundling, but the bundles became longer and the meshwork of short filaments was no longer present. PMID- 3859380 TI - In vitro antibacterial activity of ceftizoxime. AB - During 1983, the antibacterial activity of ceftizoxime has been tested in vitro against 325 strains of Enterobacteriaceae, Streptococcaceae, Micrococcaceae, Pseudomonaceae and Acinetobacter sp. isolated from material of human origin (blood, urine, faeces, sputum, various exudates). Except for S. faecalis and some strains of P. rettgeri, P. aeruginosa, A. calcoaceticus, Staphylococcus spp. all the strains examined were found to be sensitive to the antibiotic, whose MIC was 0.05-1.5 micrograms/ml in the great majority of cases. For 72 ceftizoxime sensitive strains the MBC/MIC ratio was nearly always under 4:1, confirming the drug's bactericidal activity. On strains of Enterobacteriaceae (E. coli, K. pneumoniae, S. marcescens, S. typhimurium) MIC of ceftizoxime achieved a minimum bactericidal time (MBT) between 3 and 4 hours of bacteria-antibiotic contact, and bacterial survival percentages were, in any case, very low as early as the 1st hour. PMID- 3859381 TI - Ultrastructural changes in rat oral epithelium induced by phospholipase treatment (II). Influences of phospholipase-C and -A2 on intramembranous particles of plasma membrane. PMID- 3859382 TI - Effectiveness of P-aminobenzoyl-O-phenylenediamine (Goe 1734) against mouse, rat, and human tumour cells. AB - The new N-phenylbenzamide derivative Goe 1734 was tested for its antitumour effects against mouse, rat, and human tumours. The preparation showed marginal activity against leukaemia L1210, moderate activity against Lewis lung carcinoma, and high activity against osteosarcoma C22LR and Brown Norway myeloid leukaemia. In the subrenal capsule assay the drug was active against four (cisplatin: 2) of nine human tumours. An in vitro clonogenic assay did not reveal any activity of Goe 1734 when mouse osteosarcoma or human tumour cells were exposed for only 1 h. However, continuous exposure led to 70% or greater inhibition of colony formation at concentrations of 0.1-1 microgram/ml (osteosarcoma) or 0.2-2 micrograms/ml (human tumours). PMID- 3859384 TI - Increased concentrations of the antigen CA-19-9 in serum of cystic fibrosis patients. PMID- 3859383 TI - Ocular response to extended wear of hard gas-permeable lenses. PMID- 3859386 TI - Timing of palatal closure should not be based on age alone. PMID- 3859385 TI - Life response to Crouzon's disease. AB - This paper describes the life responses of two adult patients with facial deformities associated with untreated Crouzon's disease. Each patient has normal intelligence, and each has two children and close family relatives who exhibit variable degrees of Crouzon's disease. The impact of untreated facial deformity is considered, and recommendations are made for psychosocial management of these patients and their families. PMID- 3859387 TI - Vowel oral air flow rates and air volumes for vowels. PMID- 3859388 TI - The Patten Embryology Research collection. PMID- 3859389 TI - A comparative cephalometric study of the cranial base in craniofacial anomalies: Part I: Tensor analysis. AB - The method of mean tensor analysis was used to study the cranial base in six craniofacial anomalies: Crouzon's disease, Apert's syndrome, Pfeiffer's syndrome, craniofacial microsomia (CFM), Treacher Collins (TC) syndrome, and frontonasal dysplasia (FND). The form was represented by five landmarks: the nasion (N), basion (Ba), sella (S), frontomaxillonasal suture (FMN), and sphenoethmoidal registration point (SE), and the deformities were computed as mean deformations from age- and sex-matched normal mean forms. The cranial base in CFM is normal in shape. The other five syndromes manifest four distinct patterns of shape variation. Only in TC and Pfeiffer's syndrome is the cranial-base angle distinctive. In Apert's and Crouzon's syndromes, point SE is displaced anteriorly upon a cranial base, small in size but otherwise normal in shape. In TC syndrome and FND, point SE is displaced posteriorly toward the sella. PMID- 3859390 TI - The syndrome of inappropriate secretion of antidiuretic hormone in the pharyngeal flap operation. AB - A prospective study was undertaken to determine whether there was a relationship between the pharyngeal flap operation and the syndrome of inappropriate secretion of antidiuretic hormone (SIADH). From August 1982 to November 1983, 25 patients underwent pharyngeal flap procedures. They were compared to a control group made up of five patients who underwent major cleft lip revisions. Twelve of the twenty five patients (48%) who underwent pharyngeal flap procedures had inappropriately elevated serum ADH levels, low serum osmolality, and hyponatremia in the postoperative period. There was a statistically significant (p less than 0.001) drop in the serum sodium levels in the pharyngeal flap group from the preoperative to postoperative period. There was neither a statistically significant change in the serum sodium levels nor inappropriate elevation of ADH levels in the control group. Two patients who underwent pharyngeal flap procedures developed SIADH. To our knowledge this complication has not been reported in association with the pharyngeal flap operation. No specific causes were found that would explain why SIADH developed. PMID- 3859391 TI - Adolescents with cleft lip and palate: self-perceptions of appearance and behavior related to personality adjustment. AB - Two groups of adolescents with cleft lip and palate were compared on their self ratings of facial appearance and behavior. The two groups were identified as well adjusted (N = 19) or poorly adjusted (N = 17), based on their parents' ratings of behavior. T-test comparisons indicate that the group with good adjustment have realistic perceptions of facial appearance (based on independent ratings by their teachers), and their self-perceptions of behavior are similar to those of their parents. The poorly adjusted group have unrealistic perceptions of facial appearance and perceive their behavior as more socially acceptable than do their parents. PMID- 3859392 TI - Long-term effects of premaxillary setback on facial skeletal profile in complete bilateral cleft lip and palate. AB - The purpose of this study was to analyze the long-term effects of premaxillary setback in the surgical treatment of complete bilateral cleft lip and palate (C BCLP). Roentgencephalograms at adolescence or early adulthood were available for 13 of our longitudinal C-BCLP patients who were treated with premaxillary setback and followed up with serial films since infancy. Six individuals had been subjected to early premaxillary setback to facilitate lip repair. Seven of the patients had had their premaxillae setback at a later age to correct a severe midfacial protrusion in the preschool years. Fourteen other C-BCLP patients, followed up and treated similarly except for the premaxillary setback, served as controls. The average long-term outcome of the setback surgery in both the early and late subgroups was retrusion of the midface and a slightly concave facial skeletal profile. PMID- 3859393 TI - Alcoholism in the families of bulimic anorexics. PMID- 3859394 TI - Marker chromosome in cat eye syndrome. PMID- 3859395 TI - Philadelphia chromosome-positive chronic myelogenous leukemia following apparent acute lymphoblastic leukemia. AB - The observation that Philadelphia chromosome-positive acute lymphoblastic leukemia (ALL) may progress to chronic myelogenous leukemia (CML) has been well documented among adult patients but reported only rarely in children. In this report, we describe a pediatric patient with atypical ALL, who subsequently went on to develop classical adult-type CML. This patient is unique and important because of the unusual clinical findings that she exhibited during the "ALL" phase, namely, extreme thrombocytosis, marrow fibrosis, and persistent splenomegaly, which heralded the onset of frank CML. It is suggested that the patient with presumed, but atypical, ALL be carefully evaluated for CML presenting in lymphoblastoid crisis, and that all patients with the morphologic diagnosis of ALL undergo complete cytogenetic and immunologic marker studies to confirm the diagnosis. PMID- 3859396 TI - Cell volumes of lymphoblasts in patients with acute lymphocytic leukaemia. AB - Cell volumes of lymphoblasts from 75 cases of acute lymphocytic leukaemia (ALL) and lymphocytes from 33 normal individuals were determined using a Coulter Counter Model H4 Channelyzer. The average mean cell volume (MCV) and the model volume (MV) of lymphoblasts were larger than the MCV and MV of normal lymphocytes (P less than 0.01). In addition, the cell volumes of lymphoblasts from patients with ALL were more heterogeneous than normal lymphocytes. When the volumes of lymphoblasts were compared to the FAB classification, lymphoblasts from cases of L3 were larger than those from L2 and the latter were larger than lymphoblasts from the L1 subtype. When the volumes of lymphoblasts were compared to an immunological classification, lymphoblasts from cases of B cell ALL were larger than those from non-B, non-T and T cell ALL. The volume of lymphoblasts, however, showed no significant predictive value in the determination of complete remission, duration of first remission, or survival. PMID- 3859397 TI - Acquired pili torti in two patients treated with synthetic retinoids. AB - A mother and daughter with epidermolytic hyperkeratosis were treated with two different synthetic retinoids at different times. Both patients exhibited the previously unreported side effect of increased curliness of scalp hair. Light microscopic examination revealed pili torti during the administration of isotretinoin. Both patients also experienced a better therapeutic response to and more hair loss with etretinate than with isotretinoin. PMID- 3859398 TI - Cefmetazole plasma levels after intraincisional administration. PMID- 3859399 TI - [Control of cardiac function during therapy with doxorubicin and other anthracyclines]. PMID- 3859401 TI - [Colony-forming ability of bone marrow in children with acute leukemia]. AB - Colony- and cluster-forming ability of bone marrow cells in agar medium was studied in 6 healthy children and 13 children suffering from acute leukosis. During acute stages of the diseases colonies and clusters in agar medium consisted of granulocytic cells and their quantity depended on the safety of predecessors of bone marrow granulopoiesis. In contrast to acute lymphoblastic leucosis, acute myeloblastic leucosis is characterized by a sharp growth of cluster-forming and a less intensive growth of colony-forming ability of hemopoietic cells. The bone marrow remission is marked by the growth of diffusive and mixed colonies and clusters, consisting of granulomonocytic elements. The low level of colony- and cluster-formation in the medium at the last stage of therapy (induction of acute leukosis remission) correlated well with positive indices of treatment effectiveness. The results obtained during the cultivation of blood forming cells in the agar medium may be also used for diagnosis and prognosis. PMID- 3859400 TI - [Changes in lectin-induced agglutination of human tumor cells during the process of their reversion]. AB - The concanavalin A-induced agglutination of cultivated cells of human osteosarcoma Sa-4 was studied in the process of their reversion caused by high polar compounds, dimethylsulphoxide (DMSO) and dimethylformamide (DMFA). Primarily lectin induced an expressed ability to agglutination in Sa-4 cells. In the process of tumour cell reversion under the effect of chemical inducers their agglutination decreases. After the DMSO and DMFA removal the osteosarcoma cells return to their initial state showing a high agglutination. Other high-polar compounds (N-methylformamide and dimethylacetamide) induced no reversion of Sa-4 cells and no agglutination of them as well. PMID- 3859402 TI - [Expression of Fc- and C3-receptors on membranes of blast cells in myeloblastic leukemia and blast crisis of myelocytic leukemia]. AB - The expression of Fc-receptors to immunoglobulins IgG, IgA, IgM, that of FcH receptor and receptors to C3-components of the complement in peripheral blood blast cells were studied in 11 patients with acute myeloblast leukosis and 10 patients with chronic granulocytic leukemia at the stage of blast transformation. The data obtained show the lower level of differentiation and functional activity of blast cells in patients with acute myeloblast leukemia while in chronic granulocytic leukemia a degree of expression of surface receptor on myeloblasts is close to the data obtained in the study of membrane receptors on promyelocytes and myelocytes of healthy persons. PMID- 3859404 TI - Long-term monitoring in epilepsy. PMID- 3859403 TI - [Differentiation of human leukemia K-562 cells in diffusion chambers]. AB - The human leukemia K562 cells differentiation is studied in diffusion chambers implanted in rats intraperitoneally. The investigations revealed the possibility of explantation of leukemic K562 cells in diffusion chambers in a heterogeneous host. The ability of these cells to follow the myeloid lineage of differentiation is shown. PMID- 3859405 TI - Amplification and transmission of the EEG. AB - In long-term monitoring of the EEG in epilepsy, the recording conditions are usually such that a technique must be used which allows EEG recording from patients who are engaged in behavioral activities. The technique employed basically consists of the use of a miniaturized EEG amplifier at the site of the patient and the transmission of the amplified EEG to the recording apparatus. As regards the quality of the recording, the use of miniaturized amplifiers involves various problems, particularly those related to the choice of the fixed amplifier characteristics. Depending on the recording conditions, the transmission is commonly carried out whether by cable telemetry or by radio telemetry. Various techniques for multi-channel data transmission can be used for both telemetry methods. The choice of any particular transmission technique will mainly depend on the characteristics of the EEG data transmitted and on specific requirements on the quality of the recording. PMID- 3859406 TI - Electrodes. AB - The electrical potentials of the brain are quite small and their electrical field may be restricted. Detecting these potentials is difficult especially as the distance between the electrode and the generator increases. Noninvasive electrodes only 'sample' the electrical activity synchronized over a large area of the brain. The international 10/20 system of electrode placement, the T1,T2 electrodes and other more closely placed electrodes record activity generated mainly from the brain convexities. Nasopharyngeal, ethmoidal, and sphenoidal electrodes record activity generated primarily from basal structures. Invasive electrodes including epidural and subdural electrode arrays and depth electrodes permit detection and precise localization of electrical activity generated from deep or relatively small brain regions. PMID- 3859407 TI - Monitoring at the National Institute of Neurological and Communicative Disorders and Stroke. AB - Intensive monitoring (prolonged, telemetered EEG recording, video tape recording, and plasma drug level monitoring) has an integral role in the correct diagnosis and treatment of patients with intractable epilepsy or suspected epilepsy. The intensive monitoring unit at the Clinical Epilepsy Section, NINCDS, exemplifies a well-integrated system for clinical epilepsy research. The resulting library of video taped seizures is a valuable resource for teaching and the production of films on epilepsy. PMID- 3859408 TI - C-abl and bcr are rearranged in a Ph1-negative CML patient. AB - Chromosomal analysis of a patient with chronic myelocytic leukemia (CML) revealed a translocation (9;12) (q34;q21) without a detectable Philadelphia chromosome (Ph1). Using molecular approaches we demonstrate (i) a rearrangement within the CML breakpoint cluster region (bcr) on chromosome 22, and (ii) a joint translocation of bcr and c-abl oncogene sequences to the derivative chromosome 12. These observations support the view that sequences residing on both chromosome 9 (c-abl) and 22 (bcr) are involved in the generation of CML and suggest that a subset of Ph1-negative patients may in fact belong to the clinical entity of Ph1-positive CML. PMID- 3859411 TI - In vitro uptake of gallium and chlorpromazine by mouse tumour cells. AB - Primary cell suspensions were prepared from mouse sarcoma by enzymatic digestion with pronase. The cells were incubated with gallium citrate Ga 67 or the basic drug 14C-chlorpromazine (CPZ) for up to 1 h at 37 degrees C, and the label uptake was determined. The Ga uptake was proportional to time (0-30 min), whilst the CPZ uptake rapidly reached apparent saturation (less than 10 min). Metabolic inhibitors did not affect label uptake; however, disrupting the cell membrane with N-ethylmaleimide or heating at 56 degrees C significantly reduced CPZ accumulation but did not inhibit Ga uptake. Ga accumulation was decreased by adding human transferrin (0.5 mg/ml). Both gallium and chlorpromazine are fixed in the lysosomes of cells; however, in this system, they appeared to enter mouse sarcoma cells by different energy-independent mechanisms. The Ga uptake may reflect adsorption to cell components, whilst CPZ uptake required an intact cell and may be due to passive diffusion. PMID- 3859409 TI - Two functions encoded by adenovirus early region 1A are responsible for the activation and repression of the DNA-binding protein gene. AB - Human adenovirus early region 1A (E1A) gene products differentially regulate the expression of early region 2A (E2A) encoding the DNA-binding protein (DBP). In a microinjection system, plasmids containing the DBP gene associated with both its early (map coordinate 75) and late (coordinate 72) promoters, or only with the early promoter, are inefficiently expressed, and the presence of E1A DNA is required for full expression. In contrast, the E2A plasmid in which the DBP gene is associated solely with its late promoter, efficiently produces DBP, the synthesis of which is significantly inhibited by an E1A gene product. To identify which of the E1A products is responsible for either activation or repression of DBP gene expression, two E1A mutants (Ad5hr1 and Ad2/5pm975) have been tested in the microinjection system in the presence of different DBP plasmids containing either one or both promoters. The results obtained indicate that the product encoded by the E1A 13S mRNA is responsible for the stimulation of DBP produced from the early promoter and that the 12S mRNA codes for the product which represses the synthesis of DBP from the late promoter. These results were confirmed using clones in which the E2A early or late promoter was associated to the chloramphenicol acetyltransferase (CAT) gene and assayed for CAT activity after cell transfection in the absence or in the presence of wild-type or mutant E1A plasmids, and we have also shown that this promoter-dependent regulation is reflected in the relative amount of specific DBP mRNA. PMID- 3859410 TI - The preparation and characterisation of 111In-labelled 791T/36 monoclonal antibody for tumour immunoscintigraphy. AB - The anti-human tumour monoclonal antibody 791T/36 was conjugated to the cyclic dianhydride of DTPA and radio-labelled with 111In. The labelling method proved to be both simple and reliable and would be suitable for routine clinical use. Subsequent characterisation of this radio-pharmaceutical in vitro and in tumour bearing hosts gave a strong indication as to its suitability for clinical tumour localisation studies. PMID- 3859412 TI - The case of the vanishing gallium uptake. PMID- 3859413 TI - Detection of minimal residual disease in acute leukemia: possibilities and limitations. AB - Studies are presented on the detection of 'minimal residual leukemia' using a monoclonal antibody (MCA) and fluorescence-activated cell sorting (FACS). As a preclinical model the BN rat acute myelocytic leukemia was used (BNML). The MCA Rm124 (IgM) strongly binds to BNML cells as measured by fluorescence intensity of a second-layer antibody (goat anti-mouse IgM fluorescein isothiocyanate). Only weak cross-reactivity occurred with normal mature granulocytes. It appeared possible to detect as low as 1 leukemic cell per 10,000 normal marrow cells, both in artificial mixtures and in marrows obtained after in vivo remission-induction chemotherapy with cyclophosphamide. Furthermore, an example is given of describing the kinetics of growth of leukemia in the liver, based on serial determinations of leukemic cells with the MCA technique. The population doubling time (Td) in the liver calculated in this way did not significantly differ from that derived from time-consuming and expensive bioassays. Finally, the extrapolation of these techniques developed in a preclinical model to studies in human acute leukemia is discussed. PMID- 3859414 TI - CA 19-9 in the differential diagnosis between pancreatic cancer and chronic pancreatitis. AB - CA 19-9 serum concentration was determined by a immunoradiometric technique in 130 subjects to evaluate its role in differentiating pancreatic cancer from chronic pancreatitis. Two threshold values were chosen, 17 and 37 U/ml. With the former, sensitivity, specificity and diagnostic accuracy were 86.7, 62.3 and 49.0 respectively, with the latter 73.3, 87.0 and 60.3%. The receiver-operating characteristic curves demonstrated a satisfactory discriminating capacity of CA 19-9 as regards pancreatic cancer and chronic pancreatitis; in contrast, the discrimination was poor for other gastrointestinal diseases, mainly of a malignant nature. PMID- 3859415 TI - Further evaluation of bimolane and analogs as potential antitumor agents. AB - Bimolane has been shown to have good antitumor activity and on an equitoxic basis its activity is usually better than the chemically related razoxane. Resistance patterns of these two piperazinediones were similar. They exhibited cross resistance to each other but little or no cross-resistance to most other clinically used drugs tested. Partial resistance was observed, however, between the piperazinediones and vincristine, daunorubicin and doxorubicin. The antitumor activities of three new analogs were compared with bimolane, ICRF-154 and razoxane against four rodent tumors. In general, bimolane was most effective. PMID- 3859416 TI - Changes in the characteristics of the bone marrow during therapy for acute non lymphocytic leukemia: relationship to response to remission induction therapy. AB - The bone marrows of patients with acute non-lymphocytic leukemia being treated with 'high dose' cytosine arabinoside remission induction therapy were sampled prior to the initiation of chemotherapy, after 6 days of therapy and again 7 days after the conclusion of therapy. These studies demonstrated that the marrows of patients who would enter remission (CR patients) contained less leukemic cells prior to therapy than patients who would fail to enter remission because of persistent leukemia (resistant disease, or RD patients). A comparison of the day 6 and 7-day post-therapy marrows with the pretherapy marrow demonstrated that while the % reduction in leukemic cells was greater for CR patients than for RD patients, the absolute reduction in leukemic cell mass was the same for both groups. While there was no relationship between the percentage of cells in S phase and the pretherapy leukemic cell mass, the greater the pretherapy leukemic cell mass the greater the likelihood that the leukemic cells would be resistant to the metabolic effects of cytosine arabinoside in vitro. PMID- 3859417 TI - Effect of thymulin on intracellular cyclic nucleotides and prostaglandins E2 in peanut agglutinin-fractionated thymocytes. AB - Prostaglandin E2 (PGE2) and other selected agents which elevate intracellular cyclic AMP (cAMP) levels have been demonstrated to induce the appearance of surface markers in immature T lymphocytes. Thymic hormones, which are the natural inducers of these markers, have long been hypothesized to act through the increase of cAMP levels. We have approached this area of investigation by studying the effects of thymulin (a serum thymus-derived factor, coupled with Zinc) on intracellular cAMP and cyclic GMP (cGMP) levels (expressed as cAMP/cGMP ratio) and on the release of PGE2 in different thymocyte subpopulations. Thymocytes were fractionated by the peanut agglutinin (PNA) technique into cortical immature PNA+ and medullary mature PNA- thymocytes. The data presented in this report show that thymulin is able to increase the cAMP/cGMP ratio in PNA+ and in unfractionated thymocytes, depending on its concentration, but not in PNA- thymic cells. Conversely, it is able to increase the release of PGE2 by PNA- thymocytes but not by PNA+ and unfractionated thymic lymphocytes. These results are consistent with the hypothesis that thymulin could act through different mechanisms depending on the differentiation stage of its target cells. In fact, it could be suggested that immature T cells could be activated by thymulin thereby increasing the cAMP/cGMP ratio, whereas more mature T cells would be further differentiated by thymulin through enhanced release of PGE2. PMID- 3859418 TI - Spizofurone (AG-629) increases gastric mucosal blood flow in dogs: a possible mechanism of its anti-ulcer effect. AB - The effect of spizofurone (AG-629), a new anti-ulcer agent, on gastric mucosal blood flow was investigated in anesthetized dogs and the effects were compared with those of prostaglandin E2. Intravenous administration of spizofurone in doses of 15 and 30 mg/kg caused a dose-related increase in gastric mucosal blood flow. Spizofurone (1-10 mg/ml) given intragastrically for 15 min produced a sustained increase in gastric mucosal blood flow in a concentration-dependent manner; with 3 mg/ml there was about a 50% increase in gastric mucosal blood flow at the peak and a 2 h duration of action. The mode of action of spizofurone was similar to that of prostaglandin E2. The reduction in the gastric mucosal blood flow as induced by indomethacin was markedly improved by spizofurone. The topical action of spizofurone was confirmed in an in situ experiment using a stomach flap fixed to a lucite chamber. These results indicate that spizofurone increases gastric mucosal blood flow after systemic and topical administration, and this increase in gastric mucosal blood flow would account for the anti-ulcer effects of this drug. PMID- 3859420 TI - Osteogenic sarcoma--a rare primary tumour of the breast. AB - A case of primary osteogenic sarcoma of the breast is reported and the histological and mammographic features demonstrated. A role for technetium 99 diphosphonate bone scanning in the diagnosis of this condition and measurement of serum alkaline phosphatase activity for monitoring progress of the disease is suggested. PMID- 3859419 TI - Monoclonal antibodies against E- and F-type prostaglandins. High specificity and sensitivity in conventional radioimmunoassays. AB - Polyclonal antisera against prostaglandins (PGs) are widely used for the assessment of the biological role of these mediators, but even the most specific contain antibodies against the major metabolites and degradation products of the haptens employed. To overcome this inherent problem we produced monoclonal antibodies (mAs) against PGE2, PGF2 alpha and 6-keto-PGF1 alpha using the somatic cell hybridization technique. The mAs against 6-keto-PGF1 alpha and PGF2 alpha proved to be highly specific, but allowed only for moderate detection limits (1-2 ng) in conventional fluid phase radioimmunoassays (RIAs). One of the mAs against PGE2 permitted a 100-fold improvement in the detection limit while being almost devoid of cross-reactivity with metabolites and other structurally related PGs. These results show that highly specific mAs against PGs can be produced to improve the available RIA technique for PG quantification. PMID- 3859421 TI - Dentists' incomes: national and regional survey. PMID- 3859422 TI - Straight answers to tough questions patients ask. PMID- 3859423 TI - Collection calls: train your receptionist not to be timid. PMID- 3859424 TI - Myofascial pain: diagnosis and treatment. A DM special interview. PMID- 3859425 TI - The anxious patient. A psychologist's view: 1. The regular attender. PMID- 3859426 TI - The Belle Maudsley memorial lecture 1984. The bionator: its use and 'abuse'. Part 2. Problems and progress. PMID- 3859428 TI - The MGDS RCS examination. Log/diaries. PMID- 3859427 TI - MGDS RCS examination. The scope and structure of the examination. PMID- 3859429 TI - Light-activated composites: the current status. PMID- 3859430 TI - Prescribing and drug use in general practice. 3. Legislation and prescribing. PMID- 3859431 TI - Impact of genetic engineering on hepatitis B virus. PMID- 3859432 TI - Development of dental Pd-Ti alloys. PMID- 3859433 TI - Systemic effects of porous Ti dental implants. PMID- 3859434 TI - Selected curing characteristics of light-activated composite resins. PMID- 3859435 TI - Surface roughness of a dental amalgam via a laser scattering test. PMID- 3859436 TI - Surface reproduction of pH-adjusted alginate impression materials. PMID- 3859437 TI - Bite forces and functional loading levels in maxillary complete dentures. PMID- 3859438 TI - The temperature of cement specimens and its influence on measured strength. PMID- 3859439 TI - A diffusion model for microleakage in dental restorations. PMID- 3859440 TI - Implications of oral disease trends for the treatment needs of older adults. PMID- 3859441 TI - Training tomorrow's leaders in oral health services for older adults. PMID- 3859442 TI - Detection of root caries: sensitivity and specificity of a modified explorer. PMID- 3859443 TI - A problem-oriented approach to evaluate common mucosal lesions in the geriatric patient. PMID- 3859444 TI - Career satisfaction of older male dentists. PMID- 3859445 TI - Evaluating orofacial pain in the elderly. PMID- 3859446 TI - A practical and economical approach to splinting mobile anterior teeth using wire and composite resin. PMID- 3859447 TI - An evaluation of dental programs and delivery systems for elderly isolated populations. PMID- 3859448 TI - Clinico-pathological studies on the healing of periapical tissues in aged patients by root canal filling using pastes of calcium hydroxide added iodoform. PMID- 3859449 TI - [Diagnostic value of a new serum marker of human digestive cancer: the carbohydrate antigen 19.9; comparison with the carcinoembryonic antigen]. AB - In order to evaluate its diagnostic value for digestive cancers, the carbohydrate antigen 19.9 (CA 19.9) was quantitated by radioimmunoassay in the serum of 102 patients suffering from malignant or non-malignant diseases of the digestive or pulmonary tract and of 20 healthy subjects. The carcinoembryonic antigen (CEA) was quantitated by enzyme-immunoassay in the same sera. No correlation was found between the CA 19.9 and the CEA levels. The sensitivity of the CA 19.9 test for the detection of digestive cancers (0.51) was not significantly higher than neither that of the CEA assay (0.46), nor that of the combined tests (0.59). Numerous false positive results were encountered in the CA 19.9 assay in pulmonary diseases and in non-cancerous liver diseases, especially cirrhosis. Its specificity (0.84) did not prove to be superior to that of CEA (0.90). Thus, in our experience, the clinical interest of serum CA 19.9 determination for the diagnosis of digestive cancers seems doubtful. PMID- 3859450 TI - [Abortion induction in the 2d pregnancy trimester. Endocervical PGE2 gel administration, intramuscular sulprostone administration and combined (endocervical PGE2 gel/intramuscular sulprostone) treatment]. AB - In 74 patients with normal pregnancy, termination of pregnancy was induced during 1980-1983 for medical reasons (12%) or for eugenic reasons (88%) in the second trimenon of pregnancy. We compared endocervical PG-E2 gel application (if necessary, several doses of 0.5 mg PG-E2 gel every 4-6 hours in 25 cases) with intramuscular application of sulproston (500 micrograms sulproston IM every 4-6 hours in 26 cases) and the combined endocervical application of PG-E2 gel (single administration of 0.5 mg PG-E2 gel endocervically) plus systemic application of sulproston (500 micrograms sulproston IM every 4-6 hours) in 23 cases. The average gestational age in the groups under comparison was 21 to 22 weeks of pregnancy. In the group with combined application, in endocervical PG-E2 gel application and systemic sulproston application IM, complete or incomplete abortion was seen after regular application within 20 hours in 100% of the cases. With regular PG-E2 gel application endocervically we found complete or incomplete abortion in only 79% of the cases within 36 hours, and with the IM application of sulproston in 94% of the cases under observation within 36 hours. Combined application of PG-E2 endocervically and systemic application of sulproston led to a statistically significant saving of sulproston (average total dose = 0.9 mg) together with significant reduction of the abortion induction interval to 8 hours after the first IM sulproston dose. (For comparison: Abortion induction interval after endocervical PG-E2 gel application = average 24.6 hours, and after IM sulproston application = average 15.9 hours).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3859451 TI - [Leukemic cell phenotype in acute myeloid leukemia in children (during recurrences and after ineffective treatment)]. PMID- 3859452 TI - [Clinico-cytological aspects of acute leukemia in children]. PMID- 3859453 TI - [Suppression of normal myelopoiesis in children with acute leukemia]. PMID- 3859454 TI - [Colony-forming capacity of bone marrow cells in children with myeloblastic leukemia]. PMID- 3859455 TI - [Proliferation and maturation in agar cultures of hematopoietic stem cells of children with lymphoblastic leukemia]. PMID- 3859456 TI - [Kinetic indicators of leukemic cell populations in various types of acute leukemia in children]. PMID- 3859457 TI - The endocrine activity of isolated follicular cells of the carp ovary in primary culture. AB - Oocytes were isolated from the ovaries of carp females of one breed. Interstitial tissue was mechanically removed in order to obtain single oocytes surrounded only by the follicular envelope. Such a preparation was trypsinized at room temperature and also with greater success at 37 degrees C. The follicular cell suspension contained both cells and cell clumps. It was the mixture of theca (T) and granulosa (G) cells. The temperature of 37 degrees C was preferable for the successful growth of the cells in tissue culture. The cells were grown as monolayers in Leighton tubes in Medium 199 supplemented with calf serum. Activity of delta 5, 3 beta-hydroxysteroid dehydrogenase (delta 5, 3 beta-HSD) was detected in the growing cells by a histochemical test. Culture media were analyzed for estrogen, androgen, and progesterone content by appropriate radioimmunoassays. Follicular cells prior to and in culture exhibited activity of the delta 5, 3 beta-HSD and secreted steroid hormones into the culture medium. PMID- 3859458 TI - [Mutability of the LYS2 gene in diploid saccharomycete yeasts. I. The occurrence of spontaneous mutants and mutants induced by x-ray and ultraviolet radiation]. AB - More than 3000 spontaneous and induced lys2 mutants were obtained in haploid and diploid strains of yeast Saccharomyces. The ability to utilize alpha-aminoadipate was used for lys2 mutant screening. The spontaneous and induced mutation rates were measured in haploid and diploid strains. Mitotic segregation of pho1 marker linked to LYS2 was studied in lys2 mutants obtained in diploid strains. Fertility of diploid lys2 mutants was tested. The conclusion to be drawn from the data presented is that mutations appeared in one of two homologous chromosomes and then segregated by mitotic homozygotization. PMID- 3859459 TI - [Population structure of the forest Nentsi. V. F-statistics, genetic distances and the average heterozygosity (compared to the Nganasani)]. AB - Aspects of population structure within two of the least disintegrated "anthropological isolates" in north-western (forest Nentsi) and north-central (Nganasani) Siberia were analysed on the basis of 14 polymorphic loci. The mean FIS values were found to be 0.008 in the forest Nentsi and -0.038 in the Nganasani. The negative FIS in the latter may be due to avoidance of close inbreeding. This is not the case with the Forest Nentsi who prefer matings of the uncle-niece and first cousin's type. The mean RST(FST) values of 0.026 for the forest Nentsi and 0.009 for less heterogeneous Nganasani fall within the range of values found in subdivided human groups with a similar pattern of material culture and economy. Analysis of covariance and variance matrices containing gene frequencies for seven forest Nentsi and three Nganasani subdivisions indicate that the population structure of both groups is the product of the counterbalancing action of genetic drift and migration. Pairwise genetic and geographic distance matrices between subpopulations within both groups are highly correlated, allowing us to ascribe more than 90 percent of variation among subdivisions of the Nganasani and almost 70 percent in the forest Nentsi to the effects of geographic barriers, namely distance. Mean locus heterozygosity was found to be higher in the forest Nentsi (0.332) than in the Nganasani (0.286) reflecting pronounced difference in their histories. PMID- 3859461 TI - Evidence of fibrinogen breakdown by leukocyte enzymes in a patient with acute promyelocytic leukemia. AB - On daunomycin treatment of a patient with promyelocytic leukemia, leukocyte elastase appeared in large amounts in the patient's blood. Also, the plasma fibrinogen was found to be partially degraded to early, X-like, fibrinogen degradation products. These early fibrinogen fragments were isolated and showed a low anticoagulant activity in a thrombin time test. Early fibrinogen degradation products, produced with leukocyte elastase in vitro, have a similar low anticoagulant activity. In contrast, plasmic degradation products inhibit clotting of fibrinogen to a large extent. Although alpha 2-antiplasmin and plasminogen levels were low, antithrombin III levels were not decreased. The low anticoagulant activity of the isolated fibrinogen fragments, the presence of elastase activity in the plasma--both immunological and amidolytic--and the normal levels of antithrombin III suggest that granulocytic enzymes, whose release was enhanced by the cytostatic treatment, were responsible for degradation of fibrinogen in this patient. PMID- 3859460 TI - HLA-DR antigens in primary biliary cirrhosis: lack of association. AB - A study of HLA-DR antigen in 75 patients with primary biliary cirrhosis has been carried out in order to test the hypothesis that genetic factors related to genes controlling immune responses might be important in the pathogenesis of primary biliary cirrhosis. The frequencies of HLA-DR locus antigens was not significantly different from those in 200 normal controls, nor were those of tissue antigens on the A and B loci. No HLA-DR antigen was significantly associated with the appearance of granulomata on liver biopsy (possibly good prognosis) or with raised serum bilirubin (possibly bad prognosis); nor was there any association between any HLA-DR antigen and adverse reactions to D-penicillamine treatment in 17 patients with such adverse reactions. It is concluded that genetic traits related to HLA antigens studied are probably not important in the aetiology of the disease. PMID- 3859462 TI - A descriptive approach to bulimia. AB - The many labels applied to bulimia and its frequent association with anorexia nervosa have often created confusion about its characteristics and causes. Recent research reveals a variety of bulimic types, some without histories of anorexia and with different treatment needs and prognoses. To clarify discussions among researchers and aid clinical decisions, the author proposes replacing the labels with broader descriptions. PMID- 3859463 TI - Antigenic properties of T cell antigen-specific receptors isolated from the surface of rabbit and mouse spleen and lymph node cells. AB - The presence of a allotypic determinants was tested in fractions obtained by gel filtration of antigen-specific receptors isolated by immunoadsorption from lymphoid cells of antigen-stimulated a3-3 rabbits. This technique, as well as the inhibition of the reaction of isolated receptors with anti-T cell receptor antisera (anti R) by anti-a3 antibodies failed to demonstrate the presence of a allotypic determinants. The inhibitory effect of antigen-specific receptors isolated from the lymphoid cells of stimulated A/J mice on the cytotoxic effect of anti-Ia antibodies on mouse spleen cells in the presence of rabbit complement was tested. All preparations inhibited the cytotoxic reaction with the average effectivity of 60%. In order to confirm the presence of Ia determinants on the rabbit and mouse T cell receptor molecules it was shown that the reactions of three anti-R antisera with 12 different receptor preparations were inhibited by anti-Ia antibodies. SDS-PAGE analyses of 125I-labelled mouse specific receptors and the precipitate obtained by anti-R antisera showed that T cell receptors were present in fractions with molar mass 100 and 85 kg/mol. The molar mass of the former fraction after reduction and alkylation was 45 kg/mol. PMID- 3859464 TI - Direct assignment of orosomucoid to human chromosome 9 and alpha 2HS-glycoprotein to chromosome 3 using human fetal liver x rat hepatoma hybrids. AB - The production of plasma proteins has been monitored in somatic cell hybrids between a rat hepatoma cell line (7777) and human fetal liver cells. Production of 14 plasma proteins was assayed in concentrated serum-free culture supernatants by electroimmunoassay. Alpha 2HS-glycoprotein (AHSG) was produced by 10 of 19 hybrids; concordancy for presence or absence of protein production was 100% for human chromosome 3. Orosomucoid (ORM) was produced in 8 of 19 hybrids, with a concordancy for presence or absence of protein of 94.7% with human chromosome 9. The chromosome location for genes for these two proteins, previously assigned by linkage studies, is confirmed by direct assignment. These studies have also suggested possible chromosomal assignments for loci for alpha 1-antichymotrypsin and C1 esterase inhibitor. Other genes for proteins which could not be assigned to specific chromosomes using these hybrids were: complement C3, ceruloplasmin, hemopexin, inter-alpha-trypsin inhibitor, prealbumin, retinol-binding protein, transferrin and apolipoproteins CII, B, and sinking-pre-beta [Lp(a)]. PMID- 3859465 TI - The interaction of hemoglobin O Arab with Hb S and beta+ thalassemia among Israeli Arabs. AB - We have studied 105 individuals in the village of Jasser El Zarka in the Northern Coast of Israel of whom 59% had at least one abnormal hemoglobin. Of the individuals studied 41% were AA, 13.3% AS, 28.6% AOArab, 10.5% SOArab, 0.9% SS, 38% OArab-beta + Thal, and 1.9% beta Thal trait. The SOArab double heterozygotes were characterized by a normal mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentration (MCHC), and an increase of Hb F (11.7 +/- 4.3%) and 2,3 diphosphoglycerate levels (27.8 microns/g Hb). The increase of Hb F is higher than the one seen among OArabs of other ethnic backgrounds. Their clinical course was moderately severe and osteoporosis was quite frequent. The interactions of Hb OArab and Hb S were studied in vitro and it was confirmed the Hb OArab lowers the minimal gelling concentration of mixtures with Hb S (as compared to mixtures of Hb S and Hb A), but that this effect is ionic-strength dependent. Our data are in conflict with previous claims that Hb OArab mixtures with Hb S polymerized almost as much as pure S. Oxygen association curves show a significant displacement of the p50 to the right, but the effect of oxygen dissociation is less apparent. The displacement was not nearly as significant as with SS cells, confirming our gelation data. Blood group determinations establish that these Arab populations had black African admixture. The Hb OArab/beta + Thal double heterozygotes exhibit moderate anemia (10.3 g% of Hb) and the percentage of Hb A was 17.2 +/- 1.8%. The fetal Hb was 5.4 +/- 2.1% and the 2,3-diphosphoglycerate level in two cases was 17.4 mumol/g Hb. The only case of a homozygote SS had moderate anemia (10.3g Hb%), 25.7% of Hb F, and a very benign course. PMID- 3859466 TI - Unequal mitotic sister chromatid exchange and different length of Y chromosomes. AB - There is wide variation in the length of the Y chromosome. In the same individual the length varies continuously and is normally distributed. We describe a boy with borderline mental retardation, gross and fine motor coordination difficulty, muscle rigidity, ptosis, clinodactyly, and a Y chromosome of different lengths in two separate cell populations. The most probable explanation of the cytogenetic finding is a mitotic unequal sister chromatid exchange of the Y chromosome. PMID- 3859467 TI - A new chromosome abnormality in acute nonlymphocytic leukemia. PMID- 3859468 TI - Distribution of human blood polymorphic systems in two Haryana villages. PMID- 3859469 TI - [Activities of dentists in 1983]. PMID- 3859470 TI - [The biology of aging]. PMID- 3859471 TI - [Aging bones]. PMID- 3859472 TI - [Aging of the dentin-pulp complex]. PMID- 3859473 TI - [Structure and evolution of the use of health services and dental prosthetics in elderly persons]. PMID- 3859474 TI - [Drug prescriptions for the elderly]. PMID- 3859475 TI - [Periodontal therapy in elderly persons]. PMID- 3859476 TI - The effect of amphotericin B on 67Ga biodistribution. AB - The effect of Amphotericin B (AMB) on radiogallium biodistribution in mice was studied at various time intervals. Two doses of AMB (1 mg/kg and 10 mg/kg) were administered intraperitoneally into mice bearing EMT-6 mammary sarcomas. The tumor and tissue uptakes of 67Ga were calculated when the radioactivity was administered either as 67Ga-citrate or 67Ga-transferrin (Ga-Tf). The role of transferrin was also investigated by using doubly-labeled 67Ga-125I-Tf. Our results indicate that both the doses of AMB and the chemical form of the radiogallium administered affect the pattern of distribution in some distinct fashion. It was also found that although the administration of AMB results in an increase in tumor-associated transferrin, this does not necessarily result in a concomitant increase in radiogallium uptake. In general, the effects of AMB on various tissues uptake of 67Ga appear to be related to both acute and subacute toxicity. PMID- 3859477 TI - Effects of pH and citrate concentrations on in vitro binding of 67Ga to Ehrlich ascites tumor cells. PMID- 3859478 TI - A cephalometric and electromyographic investigation of patients treated for the correction of mandibular prognathism by mandibular surgery only. PMID- 3859479 TI - Case report: orthognathic surgery-correction of maxillo-mandibular deformity. PMID- 3859480 TI - Recognizing tongue related malocclusions. PMID- 3859481 TI - A simplified approach to functional therapy. PMID- 3859482 TI - A new HLA-DP (SB) specificity (Cp63) defined in Japanese and Caucasian cell populations by cloned PLT cells. AB - Cp61, Cp62, and Cp63 are HLA-DP (SB) specificities detected by PLT testing using cloned PLT cells derived from Japanese cell donors. It was confirmed, using Japanese and Caucasian cell panels, that Cp61 is identical to DPw5 and Cp62 is identical to DPw4. Cp63, however, was found not to correlate with any known HLA DP specificities. The gene frequency of Cp63 was found to be 3.6% in Japanese (N = 42) and 1.9% in Caucasian (N = 52) cell panels of limited size. No triplet assignment of DPw specificity including Cp63 was found in the Japanese and Caucasian cell populations. The relationship between the Cp63 and the HLA antigens demonstrated no significant correlation with HLA-A,B,C,DR, or MT antigens in this study. Linkage between Cp63 and HLA was confirmed from family segregation studies. This is the first report of a new DP specificity termed Cp63. PMID- 3859483 TI - Cross-linked collagen surface for cell culture that is stable, uniform, and optically superior to conventional surfaces. AB - A new type of collagen surface for use with cultures of peripheral nervous system cells is described. Collagen is derivatized to plastic culture dishes by a cross linking reagent, l-cyclohexyl-3-(2-morpholinoethyl)-carbodiimide-metho-p-toluene sulfonate (carbodiimide), to form a uniform and durable surface for cell attachment and growth that allows dry storage, long-term culture, and improved microscopy. Surfaces of collagen derivatized to plastic were compared to surfaces of adsorbed or ammonia-polymerized collagen in terms of collagen binding and detachment, growth by dorsal root ganglion cells, and electron microscopy appearances. Derivatized collagen surfaces retained more collagen and showed much less evidence of degradation and cellular damage over periods of many weeks than did conventional adsorbed surfaces. Long-term survival of cells on derivatized collagen was far superior to that on the other surfaces, with almost 90% of cultures still viable after 10 wk. Transmission electron microscopy showed an organized layer of single fibrils that supported cell growth well, and scanning electron microscopy demonstrated an increased uniformity of derivatized collagen surfaces compared to ammoniated collagen surfaces. Applications for this improved substrate surface are discussed. PMID- 3859484 TI - Changes in K+,Na+-sensitive actin gelation factor during the differentiation of myeloid leukemia cells. AB - A homodimer protein consisting of two 38,000 dalton peptides was isolated from a murine leukemia cell line (M1). The binding molar ratio of the 38K-dimer protein to purified skeletal muscle actin was saturated at 1:3, and when the 38K dimer/actin ratio exceeded 1:12, gelation occurred. This gelation was completely inhibited by the presence of either 10 mM KCl or 20 mM NaCl. The protein induced actin filament bundling, which required a higher 38K-dimer/actin ratio and was not affected by the presence of monovalent cations. During the differentiation of Ml cells, the sensitivity of the 38K protein to monovalent cations was decreased; that is 20 mM KCl or 50 mM NaCl was required to inhibit the gelation by the 38K protein isolated from differentiated cells. On the other hand, the intracellular K+ content of Ml cells decreased from 70 +/- 5 mM to 18 +/- 3 mM, and Na+ increased from 10 +/- 5 mM to 40 +/- 10 mM during the differentiation. These findings suggest that the differentiation brought about conditions favourable for the 38K protein to induce actin gelation, and in turn, the locomotive and phagocytic activities which were induced only after differentiation in this cell line. PMID- 3859485 TI - Crystallization and preliminary x-ray characterization of bovine growth hormone. Purification of bovine prolactin and growth hormone. AB - A new purification scheme for both prolactin and growth hormone from bovine pituitaries has been developed which avoids the use of potentially damaging solution conditions. Both hormones were greater than 95% pure as judged by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and had specific activities similar to or greater than standard samples of the same hormone as judged by several bioassays. Small single crystals of bovine growth hormone were obtained by vapor diffusion techniques. Examination of these crystals by x-ray diffraction, using the Cornell High Energy Synchrotron Source, showed that they were well ordered, and exhibited diffraction to 2.8-A resolution on still photographs. Precession and oscillation photographs showed that they belonged to the orthorhombic space group P2(1)2(1)2(1) (or P2(1)2(1)2) with unit cell dimensions a = 219 A, b = 51.9 A, c = 68.9 A. The density of the crystals was 1.19 +/- 0.02 g/ml from which the presence of eight 45,000-dalton dimers/unit cell was deduced. The protein content of the crystals was shown by isoelectric focusing to be identical to that of purified growth hormone in solution. These crystals appear suitable for use in the x-ray structure determination of bovine growth hormone to at least 3.2-A resolution. PMID- 3859486 TI - In vitro effects of ovarian steroids on prostaglandin F2 alpha output by human endometrium and endometrial epithelial cells. AB - Correlations of the rise in prostaglandin F2 alpha (PGF2 alpha) levels in human endometrium during the menstrual cycle with changes in plasma concentrations of ovarian steroids have suggested that progesterone (P) priming of the endometrium is necessary for the stimulation of PGF2 alpha production by estradiol (E2). However, despite the absence of significant levels of P in plasma during the follicular phase of the cycle, PGF2 alpha output by epithelial cell cultures derived from proliferative endometrium was stimulated in vitro by 10(-8) M E2 at least as well as PGF2 alpha output from secretory endometrium. In addition, basal PGF2 alpha output by proliferative endometrium under organ culture conditions was significantly greater than that by secretory endometrium. Concurrent addition of P counteracted the effects of E2 in these in vitro systems. P (10(-7) M) plus E2 (10(-8) M) resulted in PGF2 alpha output as low or lower than those of control incubations of secretory and proliferative endometrium. In the epithelial cell cultures, significant net stimulation by 10(-8) M E2 occurred in the presence of 10(-6) M P, a noteworthy finding since the rise in endometrial PGF2 alpha during the luteal phase takes place when the tissue is exposed to both E2 and P. P lowered the basal output of PGF2 alpha by endometrium in organ culture, but not by epithelial cells in monolayer cultures. E2 appears to stimulate PGF2 alpha output by increasing synthesis rather than diminishing metabolism, since exogenous [3H]PGF2 alpha was metabolized to an equivalent extent by fragments of secretory endometrium or glandular epithelial cells regardless of whether E2 was added to the incubation medium. The results from this study confirm that only secretory endometrium responds to E2 in vitro by significantly increasing PGF2 alpha output. The lack of response by proliferative endometrium, when contrasted with the marked responsiveness of epithelial cells derived from this tissue, suggests that an inhibitory influence is removed during the isolation or subsequent culture of endometrial glands. PMID- 3859488 TI - Eliminating lower retention. PMID- 3859487 TI - Evaluation of three broth disk methods for testing the susceptibility of anaerobic bacteria to imipenem. AB - Imipenem is a member of a new class of highly potent beta-lactam antibiotics, carbapenems, with an antibacterial spectrum that includes nearly all currently known aerobic and anaerobic bacterial species of clinical significance. Although relatively stable in most standard laboratory media used for antimicrobial susceptibility testing, imipenem undergoes rapid inactivation in thioglycolate broth, a recommended medium for susceptibility testing of anaerobic bacteria by the broth disk method. In the current study, a panel of 36 anaerobic bacteria consisting of 28 clinical isolates and eight quality control strains was used to determine the suitability and accuracy of the broth disk methods with brain heart infusion, Schaedler, and anaerobic broths, in comparison to the reference agar dilution method, for the anaerobic susceptibility testing of imipenem. To achieve single test concentrations of approximately 8, 16, and 64 micrograms/ml for imipenem, cefoxitin, and piperacillin, respectively, which correspond to the MIC breakpoints of the test drugs, four 10-microgram imipenem disks, three 30 microgram cefoxitin disks, and three 100-microgram piperacillin disks were used in 5 ml of broth. The correlation between the reference agar dilution method and each of the three broth disk elution procedures evaluated was excellent, for imipenem (100% agreement) and somewhat less so for cefoxitin and piperacillin. Therefore, brain heart infusion, Schaedler, and anaerobic broths, but not thioglycolate broth, are suitable for anaerobic susceptibility testing of imipenem by the disk elution method. PMID- 3859489 TI - Surgical-orthodontic treatment for overerupted maxillary molars. PMID- 3859490 TI - Facial changes resulting from different treatments in identical twins. PMID- 3859491 TI - Mandibular corrector. PMID- 3859492 TI - Practice development letters. PMID- 3859493 TI - Labial pad measuring gauge for Class III removable appliances. PMID- 3859495 TI - Effect of non-surgical periodontal therapy. VI. Localization of sites with probing attachment loss. AB - Incisors, cuspids and premolars in 49 patients with advanced chronic periodontitis were treated with initial, non-surgical periodontal therapy. The results were monitored by probing attachment level measurements at 6 sites of each tooth every 3rd month during a period of 24 months. A series of 9 probing attachment level measurements for each site was subjected to linear regression analysis. The slope of the regression line, the projected probing attachment loss during the 24-month interval (delta y) and the probability level of the slope were calculated for each site. 2 groups of sites with probing attachment loss were identified: group 1: sites with delta y greater than 1.5 mm and p less than 0.05; group 2: sites with delta y greater than 1.0 mm and p less than 0.05. Group 1 included 120 sites (5%) and group 2 included 265 sites (10%) of the total of 2532 available sites. In both groups, probing attachment loss was more frequently noticed for sites with an initial probing depth less than or equal to 3.5 mm than for sites with initial probing depth greater than or equal to 7.0 mm. The finding that the majority of sites with probing, attachment loss was found amongst initially shallow or moderately deep lesions may indicate attachment loss due to trauma associated with therapy rather than loss as a result of a continuing, inflammatory disease process. PMID- 3859494 TI - Non-suppression of cortisol secretion by long term treatment with ketoconazole in patients with acute leukaemia. AB - Ketoconazole, a potent antifungal agent, inhibits adrenal steroidogenesis in normal subjects during short term treatment. Since this drug is used in the long term prophylaxis of fungal infections in patients with haematological malignancies, we have investigated whether such patients have evidence of adrenocortical suppression. Six patients on long term prophylaxis with ketoconazole were given tetracosactrin stimulation tests. All patients had high basal cortisol concentrations, which increased further after administration of 25 IU of tetracosactrin. It is concluded that leukaemic patients receiving long term ketoconazole treatment do not have adrenocortical suppression. They may, in fact, have hyperstimulated adrenocortical function due to stress and hypovolaemia. PMID- 3859496 TI - Candidal carriage and plaque distribution before, during and after removable orthodontic appliance therapy. AB - Candidal counts at 6 mucosal sites in 33 subjects were estimated by imprint culture before, during and after removable orthodontic appliance therapy. Additionally, dental plaque scores and salivary pH were measured at each stage. Whole mouth and site prevalence of candida rose significantly during therapy before falling to levels approximating initial values. A similar pattern was seen for candidal counts for the whole mouth and at individual mucosal sites, although post-treatment densities were usually lower than originally seen. The number of sites colonised by candida and salivary pH also increased significantly during treatment and fell significantly afterwards. Only the upper palatal plaque scores rose during therapy and most other dental sites showed a gradual decrease in value during the course of the study. This could be attributed to regular monitoring of the patient's oral hygiene procedures. This investigation demonstrated a direct relationship between the presence of an acrylic appliance, candida and low salivary pH levels. Furthermore, removable appliance therapy had a positive, though transient influence upon the prevalence and density of oral candidal carriage, suggesting that the appliance may initiate the carrier state. PMID- 3859497 TI - Effects of the degree of overbite and overjet on dental health. AB - The purpose of the study was to examine whether any combination of vertical overbite (OB) and horizontal overjet (OJ) may be more favourable than others to dental health in anterior segments. The study group consisted of 74 females and 70 males. The participants were 15-years-old and had 6 anterior teeth in both jaws. The following parameters were assessed: plaque index, gingival index, probing depth, space index, filled surfaces, the number of non-aligned proximal tooth surfaces (NONAS) and the OB/OJ ratio. The results demonstrated that participants with a relatively high OB/OJ ratio (OB/OJ greater than or equal to 1.21) had a more favourable periodontal condition than participants with lower ratios. This was so in both sexes and both jaws. The OB/OJ ratio had little relation to the prevalence of filled surfaces. PMID- 3859498 TI - Root resorption leading to linkage of dentinal collagen and gingival fibers? A case report. AB - A maxillary central incisor in a 55-year-old Caucasian female was extracted in modified block as part of a histologic study of gingival responses to subgingival crown placement. The facial portion of this block showed preclinical pocket depth of 1.0 mm with moderate gingival inflammation. The block was extracted 2 weeks after crown placement and prepared for histologic evaluation. Histologic responses to subgingival crown placement were, among others: gingival recession (1.0 mm), reformation of crevicular depth (0.7 mm) and remodelling of the gingival and periodontal attachment apparatus. Histologic evaluations of the gingival unit using cellular and connective tissue stains revealed an area of root resorption immediately apical to the junctional epithelium at a portion of the facial surface. Root resorption had progressed into dentin. Gingival connective tissue abutted the dentinal surface. Collagen stains showed the presence of tufts of collagen fibrils which appeared to arise from the dentin. These fibrillar elements seemed to splice with collagen fibrils found in the gingival connective tissue. The specimen thus suggests the possibility of a fiber linkage attachment involving exposed dentinal fibers as part of gingival repair following injury. PMID- 3859499 TI - Loss of attachment adjacent to class II carious lesions. AB - The present study was designed to investigate the relationship between large open class II carious lesions and loss of periodontal attachment in 224 extracted teeth. Each tooth had a carious and a sound approximal surface. The teeth were divided into 4 groups: upper premolars, upper molars, lower premolars and lower molars each consisting of 56 teeth. Within each group, the carious lesions were divided equally between the mesial and distal surfaces. The teeth were stained and loss of attachment was measured under a stereomicroscope fitted with an ocularmicrometer. The difference in loss of attachment between carious (0.79 +/- 0.05 mm) and sound (0.76 +/- 0.04 mm) surfaces was not statistically significant. Loss of attachment was greater on the carious surface of 98 teeth, equal to in 40 teeth and less in 86 teeth than the sound surface. Mesial and distal surfaces with and without carious lesions exhibited essentially the same degree of loss of periodontal support. Upper molars and lower premolars tended towards more loss of attachment when compared with upper premolars and lower molars. The results indicate that large open class II carious lesions cannot be regarded as an important factor in the progression of attachment loss. PMID- 3859501 TI - Grover's disease treated with isotretinoin. Report of four cases. AB - Grover's disease (transient acantholytic dermatosis; TAD), a disorder of unknown etiology, may resemble Darier's disease and frequently resists conventional therapies. The lesions can be extensive and pruritus can be a prominent feature. Four patients with Grover's disease were treated with isotretinoin. Three patients with relatively acute disease responded with remissions of up to 10 months after treatment. One patient with disease of 8 months' duration obtained partial relief but experienced a relapse when medication was stopped. PMID- 3859500 TI - Increased plasma chemoattractant in Sweet's syndrome. AB - The neutrophil function and plasma leukotactic activity of a patient with Sweet's syndrome and cystonodular acne were evaluated during a 2 1/2-year period. These studies demonstrated that chemotaxis was frequently slightly increased, especially during an exacerbation of Sweet's syndrome, but showed some decrease during isotretinoin therapy. Other functions, such as phagocytosis, metabolic activation, and bacterial killing, also were slightly increased. In addition, the patient's serum contained a heat-stable, nonlipid chemoattractant that was present at all times except during a course of isotretinoin. Although his symptoms responded to aspirin, the plasma continued to show this chemoattractant. These findings are consistent with the hypothesis that excess chemoattractant in Sweet's syndrome attracts neutrophils, which then mediate an inflammatory response. In addition, aspirin may be used to control Sweet's syndrome symptoms, although it does not suppress the plasma chemoattractant. PMID- 3859502 TI - Cognitive-behavioral therapy for bulimia: an initial outcome study. PMID- 3859503 TI - Frequency of accidental intravascular injection of local anesthetics in children. AB - Blood was aspirated in 1.7 percent of the cases, 3.1 percent of inferior alveolar block cases, and 2.2 percent of the cases where infiltration was used for the maxillary molars. It was in children eight to ten years of age that 67.2 percent of the positive aspirations occurred, although that age-group composed only 44.5 percent of the sample. PMID- 3859504 TI - Bilateral, asymmetrical, complete oroocular facial clefts and supernumerary teeth in a young Chinese female. AB - The clefting in this case involved the face and alveolar processes. The supernumerary teeth were associated with the clefts and situated mesially of the cleft on the left side and distally on the right. PMID- 3859506 TI - Voice control: an old technique reexamined. AB - The authors suggest the term implicit communication control more nearly describes the technique. In addition to the vocal element, the term includes the physical expressions of the face and hands. PMID- 3859505 TI - Double-rooted maxillary primary canines. AB - This paper includes morphological descriptions of bifurcated maxillary primary canines. Three major primary canine root types are recognized: A single root without trace of a groove, a root with a faint to distinct labial groove, a root with a broad and deep labial groove in the apical portion of the root. PMID- 3859507 TI - Food nutrient interactions. AB - Nutrient interactions are usually of little consequence as long as a well balanced diet is consumed. Nutrient interactions can be of greater significance when the diet is either deficient or excessive in important nutrients, when long term drug therapy or heavy drug or alcohol usage is involved, or during periods of increased nutrient requirements. PMID- 3859508 TI - The calcium-blood pressure hypothesis: evidence for its validity. PMID- 3859509 TI - Incomplete resorption of resorbable zinc oxide root canal fillings in primary teeth: report of two cases. AB - Two cases in which all of the zinc oxide canal filling did not resorb are described. The histories emphasize the importance of careful monitoring of treated primary teeth. The cases described were monitored for more than five years. PMID- 3859510 TI - Dens invaginatus with partial coronal agenesis: report of case. AB - This developmental phenomenon may occur in as many as 10 percent of maxillary lateral incisor teeth. The case described in this report occurred in a maxillary right central incisor which was also inflicted with a partial coronal agenesis. PMID- 3859511 TI - The auriculotemporal syndrome: report of case. AB - This is a rare and bizarre neurological and vascular response to disease or trauma. The author describes the theory of its etiology. In these cases, the injury always occurs in the region of the parotid gland. PMID- 3859513 TI - Symposium on oral health status in the United States. Las Vegas, Nevada, March 16, 1985. PMID- 3859512 TI - Primary talon cusp. AB - Talon cusps are seen most frequently on maxillary incisors. Only recently have reports of talon cusps on primary teeth appeared. This was a case involving a primary maxillary lateral incisor. PMID- 3859514 TI - Oral health status in the United States: prevalence of dental caries. PMID- 3859515 TI - Oral health status in the United States: prevalence of inflammatory periodontal diseases. PMID- 3859516 TI - Oral health status in the United States: oral cancer and soft tissue lesions. PMID- 3859517 TI - Oral health status in the United States: prevalence of malocclusion. PMID- 3859518 TI - Oral health status in the United States: temporomandibular disorders. PMID- 3859519 TI - Seasonal variations in AADSAS applicants. PMID- 3859520 TI - Teeth: design and function. PMID- 3859521 TI - Eating for fitness. PMID- 3859522 TI - Preventing oral cancer. PMID- 3859523 TI - Treating dental problems. PMID- 3859524 TI - Overcoming dental anxiety. PMID- 3859525 TI - Radiographic examinations: a window on your health. PMID- 3859526 TI - Temporomandibular joint disorders: a dental problem in disguise. PMID- 3859527 TI - Take charge of your dental health. PMID- 3859528 TI - Choosing a dentist. PMID- 3859529 TI - Understanding dental insurance. PMID- 3859530 TI - Dentistry in the future. PMID- 3859531 TI - The debate goes on. PMID- 3859532 TI - AHA recommendations. PMID- 3859533 TI - Conscious sedation and the public. PMID- 3859534 TI - Hepatitis vaccine. PMID- 3859535 TI - MPD syndrome: generic or specific? PMID- 3859536 TI - The Scandinavian dilemma. PMID- 3859537 TI - Dentista moderna. PMID- 3859538 TI - ADOSI. The inside story. ADA's entry into the computer systems market. PMID- 3859539 TI - Etiology of chronic periodontal disease: an alternative perspective. PMID- 3859540 TI - Dental education in Sweden: cultural perspective, structure, and issues. PMID- 3859541 TI - Does more generous dental insurance coverage improve oral health? PMID- 3859542 TI - Informed consent in dentistry. AB - This article discusses the doctrine of informed consent and its impact on the practice of dentistry. It summarizes relevant case and statutes, and stresses the uncertainty that prevails in this area of the law. A procedure is set forth for dentists to follow on an everyday basis that will assist them in the event that they become involved in litigation based on allegations of uninformed consent. PMID- 3859543 TI - Supernumerary mandibular premolars: report of cases. AB - Six cases, totaling seven supernumerary mandibular premolars, were seen in a sample population of 4,000 patient records. Four were from a suburban private practice sample of 2,000, the others from a similar group randomly drawn from an urban dental school. Five of seven appeared on the left side, six of seven were impacted or erupted ectopically. Only one patient was female. Four were of Spanish or Hispanic descent, one was white and one was black. The only other supernumerary teeth seen in the population sampled were two paramolars and one mesiodens. The recommended course of treatment is extraction of the supernumerary teeth, unless they may be useful for orthodontic purposes or if the surgery would be unjustifiably hazardous to adjacent structures. Complications could result in resorption of other teeth, malocclusion, and possible cystic degeneration and ameloblastoma formation. PMID- 3859544 TI - A study of the relationship between mouthwash use and oral and pharyngeal cancer. AB - As part of a larger case control study on a male veteran population at risk (drinking and smoking) for oral and pharyngeal cancer, 95 cases and 913 controls provided complete histories in a questionnaire that included data on mouthwash use. Analysis revealed no significant differences in the frequency of mouthwash users in cancer cases versus controls. In addition, no significant differences could be found between users and nonusers of mouthwash in relation to age or smoking and drinking habits. When a logistic regression analysis was performed to simultaneously remove the effects of age, or smoking and drinking habits, while controlling for all other factors, oral and pharyngeal cancer did not appear related to mouthwash use. In this study there is no evidence that mouthwash is a risk factor in the development of oral and pharyngeal cancer in males. PMID- 3859545 TI - Dentists' management of patients' fear and anxiety. AB - Dentists participating in a health screening at the 1983 ADA annual session were asked to complete a brief questionnaire concerning their attitudes and methods of managing anxious patients. Most dentists see patient fear as an extremely important dimension of their practice and believe it to be the most important impediment to patient satisfaction. Behavioral methods such as "talking" appear to be the most frequently used methods of dealing with fearful patients. Finally, most dentists appear to learn their behavioral management methods through informal means. PMID- 3859546 TI - Multiple, painful vesiculoulcerative lesions in the oral mucosa. AB - An example of pemphigus vulgaris with initial clinical manifestations confined to the mouth has been presented. Clinicians must recognize this serious disease and understand that probably more than half of the patients with pemphigus vulgaris will first experience oral lesions, and almost all will, at some time, have oral vesiculoulcerative lesions. PMID- 3859547 TI - Clinical evaluation of a composite resin in primary molars. PMID- 3859548 TI - Breaking the silence on hypertension: a dental perspective. Council on Dental Health and Health Planning Bureau of Health Education and Audiovisual Services. PMID- 3859549 TI - Neural and environmental influences on neoplasia and conditioning of NK activity. AB - The effects of physical restraint and poly I:C treatment on the growth of MOPC 104E myeloma and murine osteosarcoma and survival of animals bearing such tumors were investigated. Our studies show that in the Balb/c mice with MOPC 104E myeloma the effects of restraint stress were detrimental and lead to early death of the mice. When the restraint was combined with poly I:C, during the early course of the disease, restraint stress neutralized the beneficial effects of the poly I:C treatment. These studies show that under certain circumstances, restraint stress can negate the effects of therapy. On the other hand, restraint stress produced an opposite effect in C3H/He mice with murine osteosarcoma tumor treated in the same fashion. In mice with osteosarcoma, restraint stress delayed tumor growth and increased the median survival time. When restraint stress was combined with poly I:C treatment, the mean tumor size was smaller and median survival was substantially increased over the control group. Because poly I:C therapy delayed tumor growth and increased survival in both models, efforts to strengthen this response were tested by conditioning. Our studies show the response to poly I:C as measured by elevation of the NK activity could be conditioned with camphor smell. Conditioning of the host to raise immune activity to alter the outcome of disease is a new area yet to be explored and has important clinical significance. These studies, we believe, are important because they explore the connection between mind and body and resistance to disease. PMID- 3859550 TI - Selection of monoclonal antibodies detecting serodiagnostic human tumor markers. AB - Monoclonal antibodies (MAbs) were selected for specific binding to spent media of cultured tumor cells. Out of more than 12,000 hybridomas screened, 19 were selected in preliminary inhibition assays for secretion of MAbs which detected antigens in cancer patients' sera. Antibody CO 29.11, which was studied in detail, bound to an antigen shed and expressed by adenocarcinoma cells of colon, stomach, pancreas and urinary bladder. CO 29.11 bound to purified sialylated Lewis a (Lea) antigen but to a different epitope and with a higher binding affinity than the MAb CA 19-9. CO 29.11 but not CA 19-9 bound weakly to unsialylated Lea antigen. In double-determinant radioimmunoassay with sera of patients with colorectal carcinoma, CO 29.11 was found to be a more sensitive marker than CA 19-9 for the detection in serum of sialylated Lea antigen. PMID- 3859551 TI - Thermochemotherapy for malignant melanoma: overcoming heterogeneity in drug sensitivity. AB - Endo B (melanotic) and W (amelanotic) human malignant melanomas originated from the same tumor, both known to be heterogeneous in drug sensitivity to ACNU [( 1 (4-amino-2-methyl-5-pyrimidinyl)-methyl-3-(2-chloroethyl)-3-nitroso- urea hydrochloride]), were treated experimentally with a combination therapy of ACNU and hyperthermia in mice. Whereas Endo W melanoma has no sensitivity, Endo B melanoma is sensitive to ACNU alone. However, in both types of melanomas, a marked synergistic effect of the combination therapy was noted. Histologically, marked degeneration of both tumor cells was detected. These results strongly suggest that thermochemotherapy may overcome the tumor heterogeneity in drug sensitivity. PMID- 3859552 TI - Effect of ultraviolet irradiation on mast cell-deficient W/Wv mice. AB - The effect of UV irradiation on the skin was investigated in (WB-W/+) X (C57BL/6J Wv/+)F1-W/Wv mice, which are genetically deficient in tissue mast cells. Their congenic littermates (+/+) and normal albino mice (ICR or BALB/c) were used as controls. Mice were irradiated with 500 mJ/cm2 of UVB and the increment of ear thickness was measured before and 6, 12, and 24 h after irradiation. Ear swelling in W/Wv mice at 12 and 24 h after irradiation was significantly smaller than that in +/+ and ICR mice. In contrast, the number of sunburn cells formed 24 h after UVB irradiation (200 or 500 mJ/cm2) was similar in W/Wv, +/+ and ICR mice. On the other hand, when mice were treated with 8-methoxy-psoralen (0.5%) plus UVA irradiation (4 J/cm2) (topical PUVA), ears of W/Wv and BALB/c mice, which were both white in color, were thickened similarly 72 h after treatment, but less swelling was observed in +/+ mice, which were black in skin color. The amount of prostaglandin D2 (PGD2) in ears, determined by radioimmunoassay specific for PGD2, was elevated 3-fold in +/+ and ICR mice at 3 h after irradiation with 500 mJ/cm2 of UVB in comparison with basal level without irradiation. However, such elevation was not observed in W/Wv mice. These results suggest that mast cells play an important role in UVB-induced inflammation, and PGs from mast cells are responsible at least in part for the development of this reaction. However, neither mast cells nor PGs contribute to the sunburn cell formation and ear swelling response by PUVA treatment. PMID- 3859553 TI - [Current concepts in removable appliance therapy for Angle Class II malocclusion]. PMID- 3859554 TI - [Changes of labial and lingual pressures on the central incisors following correction of anterior cross bite]. PMID- 3859555 TI - [Ultrastructure of capillaries in the periodontal ligament of monkeys]. PMID- 3859556 TI - [Scanning electron microscopy studies on cleft lip in embryonic stages in the mouse]. PMID- 3859557 TI - [Application of a maxillary forward-traction device in skeletal Class III malocclusion]. PMID- 3859558 TI - [Removable inter-maxillary fixation devices used after surgical correction in orthodontic cases]. PMID- 3859559 TI - [Dental arches: their shapes, forms, and description. 2. Forms of dental arches]. PMID- 3859560 TI - [Effect of mandibular retraction forces on the growth of the rat mandible]. PMID- 3859561 TI - [P-A cephalometric study of the dento-cranio-facial morphology of unilateral cleft lip and palate patients with reversed occlusions]. PMID- 3859562 TI - [3-dimensional measurement of tooth movement during orthodontic treatment using a shape measuring device on dental casts]. PMID- 3859564 TI - [Theoretical analysis of the movement of the molar in extraoral anchorage]. PMID- 3859563 TI - [Electromyographic study on the pattern of masticatory muscle activity following surgical correction of skeletal Class III malocclusion]. PMID- 3859565 TI - [A histological study on osteosarcoma. Part II: The mode of local extension of osteosarcoma]. AB - The survival rate of patient with osteosarcoma has been increasing, owing to the development of adjuvant chemotherapy. Recently, the limb saving procedure in osteosarcoma has been attempted in many countries. Although we need knowledge about the mode of local extension of osteosarcoma in the planning of this surgery, there are few reports concerning the matter. The purpose of this paper is to make clear, morphologically, how tumor tissue extends across the epiphyseal plate, periosteum and bone marrow. The materials were 26 amputated extremities of osteosarcoma which had not received any chemotherapy or radiotherapy. Paraffin embedded macrosections were prepared and stained with HE and Masson stain. When epiphyseal plate was open or closing, 13 out of 14 cases (93%) showed transphyseal extension of tumor. Tumor extension along the vessels at the center of the plate and the epiphyseal artery was most common. Transmedullary extension showed three different types, infiltrative type (18 cases), lobular type (5 cases), and "skip" type (one case). None had capsule or pseudocapsule surrounding the tumor. As to the relationship between periosteal reaction and tumor involvement of cortex or medulla, periosteal reaction was located more proximally than cortical or medullary involvement in some cases. In other cases, however, cortical or medullary involvement was located more proximally than periosteal reaction. The gaps between the tips of the periosteal reaction and cortical or medullary involvement ranged from 0.5 to 1.5 cm. In the transperiosteal extension, it was confirmed that tumor cells had invaded the periosteum along the vessels penetrating the periosteum. PMID- 3859566 TI - [A clinical study of trigeminal neuralgia--a comparative evaluation of various treatment modalities]. PMID- 3859567 TI - [X-ray diffraction analysis of dental amalgams]. PMID- 3859568 TI - [Cysts and tumors in the oral cavity and adjacent structures]. PMID- 3859569 TI - [Effect on dentin mineralization following 5-fluorouracil administration in the rat. Fluorescence microscopy and scanning electron microscopy studies]. PMID- 3859571 TI - Quinsy: a bilateral presentation. AB - Bilateral peritonsillar abscesses are rare and often not diagnosed until tonsillectomy. As the condition may create diagnostic problems and serious complications, a case history is presented. The importance of rapid otorhinolaryngological examination and treatment is stressed. PMID- 3859570 TI - [An histologic study of the effect of fibronectin on fibrin linkage and epithelial migration]. PMID- 3859572 TI - [Effect of heat treatment on the levels of dimethylamine trimethylamine and trimethylamine-N-oxide in squids]. PMID- 3859573 TI - Latex agglutination cryptococcal antigen test in cryptococcal meningitis. PMID- 3859574 TI - Functional significance of coronary collateral circulation. PMID- 3859575 TI - [Studies on human body responses to noise. Part III. An experimental study on responses of breathing rate, heart rate and blood pressure in 3 age groups]. PMID- 3859576 TI - Shoe contact dermatitis. PMID- 3859577 TI - Hyperthyroidism and Evans' syndrome. A case report. PMID- 3859578 TI - Levamisole-induced hypersensitivity. A report of 2 cases. PMID- 3859579 TI - [A case report of depressed skull fracture of the newborn treated with a vacuum extractor]. PMID- 3859580 TI - Chronic pain review. A suspiciously well patient. PMID- 3859581 TI - Affective disturbance in eating disorders. AB - Thirty-three bulimic and 14 restrictive anorexics were compared on DSM-III diagnoses of affective and anxiety disorders, observer-rated and self-rated measures of depression and anxiety, and family history. A subgroup of 18 eating disorder subjects was administered the dexamethasone suppression test. The same 18 subjects were compared to 13 subjects with affective disorder on the Schedule for Affective Disorders and Schizophrenia. It was found that a large group with bulimia and restrictive anorexia nervosa was subject to a depressive disorder. Thirty-eight percent of the sample fulfilled criteria for a major depressive episode. The dysphoric experience seemed as intense in the bulimic and restricter group. There was a high incidence of dexamethasone nonsuppression (55%), which was found to be related to various measures of depression. Bulimics and restricters differed in their family history of affective disorder. While 61% of bulimics had a positive history of depression, this was found in only 23% of restricters (p less than .03). PMID- 3859582 TI - Tonic, phasic and cortical arousal in Gilles de la Tourette's syndrome. AB - This study explored the hypothesis that Gilles de la Tourette's syndrome involves a disturbance in arousal modulation. The experimental group consisted of 20 unmedicated subjects with the Gilles de la Tourette's syndrome, and the control group of 20 subjects with chronic medical illnesses (haemophilia, von Willebrandt's disease and diabetes). There were differences between groups in the manner in which log conductance level changed over time during sound and light habituation experiments involving mild levels of stimulation with the Gilles de la Tourette group showing less change in arousal level over trials than the control group. No group differences were found in measures of phasic arousal, rate of spontaneous fluctuations and performance on two tasks that have been related to cortical arousal. It is suggested that the slower change in log conductance level in the Gilles de la Tourette group during the sound and light habituation experiments indicates that reticular activity is more persistent in these patients. PMID- 3859583 TI - Cancer prevention. PMID- 3859584 TI - Inhibition of phorbol ester--induced human epidermal ornithine decarboxylase activity by oral compounds: a possible role in human chemoprevention studies. AB - Extensive animal data have suggested that, in some systems, the induction of ornithine decarboxylase (ODC) is an essential, although not sufficient, aspect of tumor promotion and that compounds that inhibit ODC can inhibit tumor formation. Using fasting human volunteers, we report that human epidermal and dermal ODC are consistently induced by the tumor promoter 12-O-tetradecanoylphorbol-13-acetate (TPA) in a manner similar to that seen in mouse skin. There is a marked intersubject variation in TPA-induced epidermal ODC activity levels. Orally administered compounds significantly inhibited TPA-caused human epidermal ODC induction. These data may be useful in the further development of drugs, doses, and dose schedules for use in human cancer chemoprevention studies. PMID- 3859585 TI - Etoposide (VP-16) with prednisone and vincristine for the treatment of refractory acute lymphoblastic leukemia. AB - Fifty children with acute lymphoblastic leukemia (ALL) in first to fifth relapse were treated with a three-drug reinduction regimen consisting of prednisone (40 mg/m2/d for seven days), vincristine (1.5 mg/m2 on day 1) and etoposide (VP-16, 250 mg/m2 on days 1 through 3). The intent was to assess the efficacy of VP-16 in an otherwise conventional reinduction plan, especially in patients who had previously received teniposide (VM-26), the close congener of VP-16. Among the 46 patients who received at least two courses of the therapy, 16 (0.34) achieved complete remission. Seven others showed improvement in their bone marrow status. Each child had been heavily pretreated with prednisone and vincristine, and 14 had received VM-26. That seven patients judged to be clinically resistant to VM 26 had complete responses to prednisone-vincristine-VP-16 indicates that prior treatment with one podophyllotoxin derivative does not preclude responses to the other. We are uncertain about the pharmacologic basis of these results but suggest that the increased dosage and more frequent administration of VP-16, relative to that of VM-26, was sufficient to overcome apparent resistance to the latter compound. Remission durations ranged from one to eight months (median, four months), emphasizing the need to devise more effective continuation therapy, including investigational agents such as the epipodophyllotoxins. PMID- 3859586 TI - A characteristic pattern of leukemic cell differentiation without cytoreduction during remission induction in acute promyelocytic leukemia. AB - While differentiation of leukemic cells in vitro is well established, the role of differentiation in vivo is not defined and is generally attributed to differentiation inducers. In five patients with acute promyelocytic leukemia (APL) an unusual pattern of a slow and progressive decrease of immature blasts with a concomitant increase in mature cellular elements was observed following intensive combination chemotherapy. All patients eventually achieved complete remission, four of them without an intermediate phase of marrow hypoplasia. This morphologic pattern of response suggests that leukemic cellular differentiation rather than cytotoxicity was one mechanism involved in remission induction. Cytogenetic studies of remission revealed disappearance of the cytogenetic marker, the balanced translocation between the long arms of chromosomes 15 and 17. This remission induction process appears to be due to the cellular biologic characteristic rather than the therapy used as it occurs in a substantial proportion of patients with APL. It should be considered for optimal diagnostic and therapeutic decisions. PMID- 3859588 TI - Developmental changes in tissue distribution of gallium-67 citrate. AB - The developmental changes in the biodistribution of [67Ga]citrate were studied in rats. The uptake of 67Ga in many tissues changed clearly with age and the fluctuation pattern was characteristic in each tissue. The uptake in heart and bone decreased, but increased in epiphysis with development. In liver, a transient increase in 67Ga accumulation appeared in the course of growth. These changes in 67Ga uptake in tissues were in good agreement with the developmental changes in the levels of nucleotides or protein synthesis that have been found by a large number of studies. These results suggest the existence of a close relationship between 67Ga accumulation and the growth rate of tissues. PMID- 3859587 TI - A prospective randomized comparison of epirubicin and doxorubicin in patients with advanced breast cancer. AB - Fifty-four patients with advanced breast cancer who had failed prior non anthracycline combination chemotherapy were randomized to treatment with either epirubicin 85 mg/m2 or doxorubicin 60 mg/m2 intravenously every three weeks. Of 52 evaluable patients, 25% (six of 24) treated with epirubicin, and 25% (seven of 28) treated with doxorubicin experienced major therapeutic responses. The median duration of response to epirubicin was 11.9 months compared to 7.1 months with doxorubicin. Cardiotoxicity was monitored by serial multigated radionuclide cineangiocardiography performed at rest and after exercise. Laboratory evidence of cardiotoxicity was defined as a decrease in resting left ventricular ejection fraction of greater than 10% from the baseline value, or a decrease of 5% or greater with exercise compared with the resting study performed on the same day. Fifteen patients treated with epirubicin and 18 patients treated with doxorubicin had at least two determinations of left ventricular ejection fraction and were evaluable for laboratory cardiotoxicity. Using methods of survival analysis, the median doses to the development of laboratory cardiotoxicity were estimated to be 935 mg/m2 of epirubicin and 468 mg/m2 of doxorubicin. Four patients treated with epirubicin and five treated with doxorubicin developed symptomatic congestive heart failure. The median cumulative dose at which congestive heart failure occurred was 1,134 mg/m2 of epirubicin compared with 492 mg/m2 of doxorubicin. Fewer episodes of nausea and vomiting were observed in patients receiving epirubicin. Epirubicin is a new anthracycline with reduced cardiac toxicity, but preserved efficacy in the treatment of patients with advanced breast cancer. PMID- 3859589 TI - Hydrogen sulfide and the probabilities of 'inhalation' through a tympanic membrane defect. AB - We conclude that workers with tympanic membrane defects (perforated eardrums) should not be excluded from working in atmospheres containing concentrations of hydrogen sulfide (H2S). Several existing requirements and recommendations exclude workers with perforated eardrums from working in or around H2S. Such protective measures stem from the belief that H2S can enter the body through the perforation in sufficient measure to compromise the wearer's respiratory protection. However, based on calculations of anticipated leakage of H2S for a variety of eustachian tube conditions and in the absence of either medical literature or personal reports documenting H2S poisoning due to eardrum perforation, the recommendation for excluding workers with such a condition from working in or around H2S is not supported. The anatomy, physiology, and pathology of the eustachian tube are discussed, including the effects such devices as tympanomaxillary shunts might have on contaminant leakage. The National Institute for Occupational Safety and Health (NIOSH) criteria for respirator tests and sources of respirator leakage are examined and NIOSH recommendations for respiratory protection against H2S are outlined. PMID- 3859590 TI - Condylar position after mandibular advancement. PMID- 3859591 TI - Osteoarthritis of the temporomandibular joint: a light microscopic and scanning electron microscopic study of the articular cartilage of the mandibular condyle. AB - The aim of this study was to investigate the organization of collagen fibrils and the histopathologic alterations as well as the morphologic aspects of osteoarthritic articular cartilage of the human mandibular condyle. Nine osteoarthritic condyles, three obtained at necropsy and the other six during surgery, were examined by light microscopy and scanning electron microscopy. Light microscopic observations revealed features of progressive and regressive remodeling and the presence of clefts. Scanning electron microscopic observations showed the presence of thick, coiled fibrils at the joint surface and numerous osmiophilic lipid globules scattered between the collagen fibrils. The collagen fibrils were disordered. It was concluded that collagen fiber network disintegration and fatty degeneration comprise the osteoarthritic changes of the articular cartilage of the human mandibular condyle. PMID- 3859592 TI - Radiographic appearance and population distribution of the pneumatized articular eminence of the temporal bone. AB - The pneumatized articular eminence of the temporal bone (PAT) is a cavity similar to that seen in the mastoid process that occurs in the zygomatic process of the temporal bone. Panoramic radiographs of 1061 dental school patients were reviewed to determine the radiographic appearance and population characteristics of this finding; PAT was found in 28 patients (2.6%). The mean age of the patients was 32.5 years; there was no sex predilection and four patients showed this defect bilaterally. Two radiographic types of PAT were identified, unilocular and multilocular. Panoramic radiography appears to be an efficacious method to display the articular eminence for visualization of PAT. Due to the relatively common occurrence of PAT and the increasing amount of surgery of the temporomandibular joint, visualization of this defect becomes important for the clinician planning surgical manipulation of the articular eminence. PMID- 3859593 TI - Intraoperative complications of sagittal osteotomy of the mandibular ramus: incidence and management. AB - The intraoperative complications occurring with 256 sagittal osteotomies operated by two different osteotomy designs are presented. Intraoperative complications occurred in 8.2% of the cases. Aside from operator experience and skill, complications appeared to be related to the osteotomy design and attention to detail during the operation. PMID- 3859594 TI - Pericoronitis: a reappraisal of its clinical and microbiologic aspects. AB - Pericoronitis is an infectious disease of the operculum overlying an erupting or semi-impacted tooth. It manifests itself mainly in late adolescence and young adulthood and nearly always occurs around the lower third molar. The distinctive location, age, clinical picture, and link with predisposing factors warranted a reappraisal of pericoronitis and its etiology. Spirochetes and fusobacteria proved prevalent at all stages of the disease. The presence of these microbacteria may provide a clue as to the late appearance, particular location, and singular clinical picture of pericoronitis. The fact that spirochetes and fusobacteria are also found in acute necrotizing ulcerative gingivitis, and have been associated with alveolar osteitis, indicates a possible relationship between these disorders and pericoronitis. PMID- 3859595 TI - Comparison of meclofenamate sodium with buffered aspirin and placebo in the treatment of postsurgical dental pain. AB - The efficacy of meclofenamate sodium (Meclomen) at two different doses was compared with that of buffered aspirin and placebo in the control of postsurgical pain in a double-blind, randomized study of 205 patients. Meclofenamate sodium, 200 mg, was significantly better than meclofenamate sodium, 100 mg, in some efficacy parameters. Both doses of meclofenamate sodium were superior to buffered aspirin in most parameters of efficacy, and more effective than placebo in every parameter. PMID- 3859596 TI - A primate model for producing experimental alveolar cleft defects. AB - A simplified surgical technique to create an alveolar cleft defect with oronasal communication was developed in 12 female rhesus monkeys. The defects fulfilled the following criteria: 1) a bilateral alveolar cleft with a minimal width of 1 cm; 2) presence of an oronasal communication lined by epithelium; 3) absence of any clinical signs of inflammation within the cleft defect area; and 4) presence of functional teeth on each side of the created defect. PMID- 3859597 TI - Changes in distribution of some crucial elements in masseter myofibers following surgically induced trauma. AB - Experimentally induced surgical trauma of the masseter muscle in rats led to changes in the distribution of some crucial intracellular elements as determined by microprobe analysis. Sulfur, phosphorus, and potassium values were lowered while sodium and chlorine levels were elevated. These changes were accompanied by increased formation of ice crystal artifacts in myofibers. The findings suggest that trauma causes alterations in cytoplasmic macromolecules and in the state of water in the cells. The method of analysis provides a means for the further evaluation of antiinflammatory drugs. PMID- 3859598 TI - Case 55: large right mandibular mass. PMID- 3859599 TI - Arthrogryposis multiplex complex involving the temporomandibular joint. AB - A case of arthrogryposis multiplex complex involving the temporomandibular joints is reported. The anatomy and physiopathology of the arthrogrypotic articulation are reviewed. The role of biomechanical factors in the development and maintenance of joint surfaces is discussed. Treatment modalities are proposed. PMID- 3859600 TI - Choriocarcinoma metastatic to the maxillofacial region. PMID- 3859601 TI - Metastatic neuroblastoma of the jaws. PMID- 3859602 TI - Methyl methacrylate obturation of the pneumatized articular eminence of the temporal bone. PMID- 3859603 TI - A simplified nasal packing. PMID- 3859604 TI - Calcified structures in anterior maxillary cysts. PMID- 3859605 TI - Modified technique for external fixation following mandibular resection. PMID- 3859606 TI - Morphology of the developing articular disc of the human temporomandibular joint. AB - The morphology of the developing articular disc of the temporomandibular joint in eight human fetuses, ranging in age from 13 weeks to 17.5 weeks, was studied. The shape of the articular disc at the time of initial delineation resembled the shape of the adult articular disc, suggesting a predominantly genetic determination. Elastin fibers were not demonstrated. The vascularity of the fetal articular disc was confined to the anterior and posterior thickened peripheral zones, with no evidence of capillaries in the thinner intermediate zone. Lateral pterygoid muscle fibers inserted into the medial aspects of the developing articular disc. PMID- 3859607 TI - Compression osteosynthesis of mandibular fractures: a retrospective study. AB - A retrospective study was performed on 35 patients who had a total of 43 fractures of the mandible that had been treated using bone plates for internal fixation. The data suggest that the procedure has a high degree of success and low rate of morbidity. PMID- 3859608 TI - Variations of total vertical maxillary excess. AB - The long-face syndrome is a well-recognized entity, yet the pathogenesis of this malformation remains obscure and variations are generally not recognized. Fifty lateral cephalometric radiographs of patients who underwent vertical maxillary reductions were studied using the architectural and structural analysis of Delaire. Several subgroups of vertical maxillary excess that had not been recognized previously were identified. The most common dysmorphic type was the classically described long-face syndrome; the next most common consisted of patients who had short upper lips, normal maxillas, and long faces secondary to vertical chin excess. In all, six different variations of vertical maxillary excess were identified. Concomitantly, in the majority of cases there was associated vertical mandibular chin excess. It is suggested that these variations may have differing pathogeneses. PMID- 3859609 TI - A retrospective study of 1,521 mandibular fractures. AB - A series of 1,521 mandibular fractures are reviewed with respect to age and sex distribution, causes, anatomic distribution, and method of treatment. The complications encountered are also discussed. PMID- 3859610 TI - Vascular penetration following intraligamental injection. AB - The potential for inadvertant intravascular injection of a local anesthetic solution with the intraligament injection syringe is described. The spread of solution is radiographically demonstrated, and precautions during the use of the procedure are suggested. PMID- 3859611 TI - Bilateral coronoid hyperplasia: report of two cases. PMID- 3859612 TI - Development of a keratocyst in the facial soft tissues. AB - The clinical signs, diagnosis, and therapy of a keratocyst of the soft tissues in a 27-year-old man are described. Part of the keratocyst lining probably grew through the bony window after extraoral biopsy or was implanted in the soft tissue during the procedure, accounting for the location of the lesion. PMID- 3859613 TI - Encephalocraniocutaneous lipomatosis and mixed odontogenic tumors. PMID- 3859614 TI - Prilocaine-induced methemoglobinemia in a child with Shwachman syndrome. AB - A case of methemoglobinemia after injection of prilocaine in a patient who had Shwachman syndrome (Shwachman-Diamond syndrome) is presented. The report reinforces the need to be cognizant of dose/weight/mass relationships in patients receiving medications capable of oxidizing hemoglobin. PMID- 3859615 TI - Verruciform xanthoma of the oral mucosa. AB - The verruciform xanthoma is a rather rare lesion that is mostly confined to the oral mucosa. The clinical picture may vary considerably. The diagnosis is based on the presence of numerous xanthoma cells in the connective tissue papillae. A case of verruciform xanthoma in the floor of the mouth in a 45-year-old woman is presented. The findings reported in the literature are also discussed. PMID- 3859616 TI - Syndrome of inappropriate antidiuretic hormone secretion associated with maxillofacial trauma. PMID- 3859617 TI - Adenocarcinoma metastatic to the temporomandibular joint. PMID- 3859618 TI - Aggressive ossifying fibroma of the mandible. AB - A case of aggressive ossifying fibroma has been presented, and emphasis has been placed on the importance of evaluating multiple parameters before a specific diagnosis is assigned. The unique histologic appearance of this particular lesion demonstrates a close relationship between the aggressive ossifying fibroma and a well-differentiated osteogenic sarcoma and advocates the need for more defined microscopic criteria to properly identify such lesions as either benign or malignant. It is suggested that proper surgical management of the aggressive forms of fibro-osseous lesions be dictated by the surgical judgement of the operator, in conjunction with what is best for the patient. PMID- 3859619 TI - Mandibular metastasis from a primary adenocarcinoma of the fallopian tube. AB - A case of a metastatic lesion to the mandible from a Fallopian tube carcinoma is reported. The presenting symptoms were altered lip sensation and an intraoral mass. A previous history of pelvic infection was reported, but later a diagnosis of adenocarcinoma of the left Fallopian tube was made. Metastatic spread also involved other bones and the liver. No previous case of a metastatic lesion to the oral cavity from the Fallopian tubes has been reported. PMID- 3859620 TI - Laryngeal incompetence following facial trauma. PMID- 3859621 TI - Primary angioleiomyoma of the mandible. PMID- 3859622 TI - Monomorphic adenoma of the buccal mucosa. PMID- 3859623 TI - Modified Kocher clamp for fragment stabilization after sagittal ramus osteotomy. PMID- 3859624 TI - Prevention of tooth decalcification under acrylic splints used in orthognathic surgery. PMID- 3859625 TI - Association between tooth loss and TMJ dysfunction. AB - An analysis of the distribution of tooth losses in 521 subjects having lost one to fourteen teeth, disclosed a statistically significant association between the loss of maxillary first premolar and the presence of TMJ dysfunction. The association was evident on both sides. Maxillary first premolars have earlier been shown to contact prematurely on hinge closure more often than the other teeth. The loss of other teeth seemed independent of the functional state of the stomatognathic system. It is suggested that TMJ dysfunction may predispose to the loss of the maxillary first premolar by direct trauma to the tooth and/or by speeding up periodontitis. PMID- 3859626 TI - Mandibular dysfunction in 10-18 year old school children as related to morphological malocclusion. AB - An association was sought between certain morphologic characteristics of malocclusion--Angle classification, over-bite, over-jet, open-bite, cross-bite and crowding--and the presence or absence of three cardinal symptoms of mandibular dysfunction--joint sounds, joint sensitivity to palpation and muscle sensitivity--in a sample of 369 Israeli school children. In addition, two additional independent variables, 'occlusal wear' and 'previous orthodontic treatment' were introduced into the statistical analysis. Occlusal wear and abnormal overbite were the only factors found to increase significantly the presence of dysfunction symptoms. PMID- 3859627 TI - The effective minimum cement thickness of zinc phosphate cement for luted non precious crowns. AB - Non-precious metal crowns were prepared for natural teeth which were ground to a taper angle of 5 degrees. The movement of the crowns on teeth during repeated try on seating was measured with a micrometer. Increasing the applied load from 2 to 10 kg resulted in an average crown movement of 63 micron. For most samples this movement continued when try-on was repeated. Casting irregularities were found to create furrows on some regions of the axial tooth surface during try-on seating. The diameter of the ADA specification consistency disk for zinc phosphate cement was found to depend strongly on the P:L ratio and the ambient temperature. The castings were cemented with zinc phosphate cement of controlled consistency. Cementation with a load of 10 kg gave rise to an average crown elevation of 54 micron and a range of measurements between -8 and 113 micron. The effective minimum cement thickness corresponding to this average was calculated to be 4.7 micron. Small negative values of elevation were attributed to deepening of tooth furrows during cementation. An analysis is given of data from the literature, relevant to the cement flow and irregularities in cement thickness. PMID- 3859628 TI - Diagnostic value of surgical testicular biopsy after therapy for acute lymphocytic leukemia. AB - Inasmuch as several cooperative research groups currently require routine testicular biopsy in boys with acute lymphocytic leukemia before cessation of therapy, we performed bilateral open wedge biopsies in 38 boys aged 4 1/2 to 18 years, all of whom were completing 3 years of therapy, were apparently in complete remission, and had palpably normal testes. Biopsy specimens from two other patients were examined during therapy for specific clinical indications. Among the 40 patients, one biopsy revealed leukemia bilaterally; 39 patients had negative biopsy results, three of whom had overt, biopsy-proved testicular relapse 6 weeks to 17 months after normal biopsy. All four patients with testicular relapse are in complete remission six to 50 months after testicular irradiation. We conclude that random sampling during routine testicular biopsies may fail to demonstrate occult leukemia, and that the high rate of complete remissions following retrieval therapy after overt testicular relapse makes routine biopsies before cessation of therapy unnecessary. PMID- 3859629 TI - Plasma prostaglandin F2 alpha and plasma 13,14-dihydro-15-keto-prostaglandin F2 alpha levels in women during induction of labor with i.v. infusion of prostaglandin F2 alpha in relation to uterine contractions. AB - The concentrations of plasma PGF2 alpha and its main metabolite, 13,14-dihydro-15 keto-PGF2 alpha (PGFM) were measured in serial samples of blood collected in 10 pregnant women at term who were given iv infusions of low doses of PGF2 alpha for induction of labor. Six other women served as controls and were given saline infusions. Uterine contractions began with a mean latency of 62 min in the PGF2 alpha infused women, in controls uterine activity remained unchanged. Plasma PGFM levels had increased significantly 30 min after PGF2 alpha infusion began, rising thereafter in a dose dependent manner. Plasma PGF2 alpha also rose reaching a steady state at 2 hours. No significant changes were observed in the controls. The 6-h infusion resulted in delivery in 5 of the 10 women, in the 5 others the cervical scores increased only by 1.25 points on the average and further treatment was needed to achieve delivery, although prostanoid levels rose to similar levels in all. The data show that when uterine contractions are induced by systemic PGF2 alpha, the levels of PGFM are significantly raised. In spontaneous labor uterine contractions begin long before plasma PGFM rises. Thus, if endogenous PGF2 alpha generation is involved in the initiation of uterine contractions during spontaneous labor, it must be synthetized in the myometrium at quantities too low to raise the levels of circulating PGFM. PMID- 3859630 TI - The long-term effectiveness of periodontal therapy in a clinical practice. AB - A retrospective study was conducted of 620 patients in a periodontal practice over the years 1960 to 1982. Various periodontal therapies were assessed by using careful office protocols, meticulous record-keeping and well-defined outcome criteria. Four treatment outcome categories were used: two representing satisfactory outcomes (referred to as "STABLE"), and two unsatisfactory outcomes ("UNSTABLE"). The percentages of patients in the STABLE categories following different therapies were: (1) nonsurgical treatment, 63.6%; (2) closed curettage, 73.1%; (3) open curettage, 95.0%; (4) modified Widman flap, 91.6%; (5) full flap and osseous surgery, 71.1%. The major conclusions were that the modified Widman flap and open curettage were more effective than flap and osseous surgery, and much more effective than closed curettage when it was employed as an alternative treatment (54.8% STABLE) to the osseous surgery (71.1% STABLE). Thus, moderate surgical therapies appear to be at least as effective as ostectomy procedures in the treatment of periodontal disease, while nonsurgical and closed curettage therapies appear to be less effective. PMID- 3859631 TI - Effects of citric acid treatment on pedicle flap coverage of localized recession. AB - Citric acid conditioning of denuded roots prior to laterally positioned pedicle flap (LPPF) coverage may increase the likelihood of reattachment, but no controlled studies to determine the efficacy of the procedure in managing naturally occurring defects in humans have been reported. This investigation compared the effects of LPPF root coverage with and without citric acid (pH1) pretreatment in a group of patients with gingival recession and associated denuded roots. Thirty-six patients participated in the study. Eighteen received LPPFs without citric acid pretreatment and 18 received LPPFs with citric acid pretreatment. Gingival recession and sulcus depth were measured preoperatively and 30, 60 and 90 days after the surgical procedure. LPPFs both with and without citric acid pretreatment reduced significantly the amount of exposed root, but no differences between groups were found. For sulcus depth, the 90-day value for the citric acid group was significantly increased over the preoperative level, but no other changes were noted. There appears to be no clinical justification for using citric acid conditioning as an adjunct to LPPF coverage of denuded roots. PMID- 3859632 TI - Measuring and interpreting increases in probing depth and attachment loss. AB - Increases in probing depth and attachment level measurements are used by clinicians and clinical scientists for assessing the periodontal status and/or change in status of patients. Interpretation of these measurements has implications with respect to our understanding of periodontal disease, treatment of patients and the implementation of clinical investigations. Measurements of probing depths and attachment loss were made on 204 teeth in 34 patients. The measurements were repeated after short periods of time by different examiners as well as the same examiners. Using these data, sensitivities and specificities of several potential diagnostic thresholds were calculated. It is concluded that observing an increase of probing depth greater than 1 mm serves as a diagnostic test with high sensitivity and specificity. PMID- 3859633 TI - The colonization and establishment of invading bacteria in periodontium of ligature-treated immunosuppressed rats. AB - The morphologic features and pattern of bacterial invasion of the periodontal tissue in ligature-induced periodontal defects of immunosuppressed rats were studied. Silk ligatures were placed circumferentially on the maxillary left second molar of 24 Sprague-Dawley rats. The treatment group (14 rats) received Cytoxan (75 mg/kg) the day after ligature placement and at Day 4. The control group (10 rats) received no medication. All animals were sacrificed on Day 8 and the maxillae processed for light and electron microscopy. Only ligated sites in immunosuppressed animals exhibited bacterial invasion. Invading bacteria consisted of microcolonies of Gram-negative and Gram-positive coccoid cells and rods located near the tissue surface. Each microcolony consisted of morphologically homogeneous microorganisms. The deeper sites revealed a diffuse invasion of Gram-negative rods which appeared morphologically similar. Other features associated with invasion were complete destruction of epithelial tissue next to the ligature and the lack of inflammatory cells in the gingival region. These findings, when compared to those of other reports of tissue penetration by bacteria, point to the necessity of differentiating between bacterial invasion of gingival tissues, associated with penetration of tissues by proliferating bacteria, and bacterial translocation, a situation in which bacteria are passively carried into the tissues, for example by mechanical manipulation immediately before or during biopsy taking, or possibly during processing for histology. PMID- 3859634 TI - Microbial interpretation of plaque relative to the diagnosis and treatment of periodontal disease. AB - It has been suggested that monitoring microbial forms in plaque with the microscope may prove useful to the clinician in assessing periodontal status. In this regard, the microbial interpretation of plaque relative to the diagnosis and treatment of periodontal disease has recently received considerable attention. However, questions remain to be answered before the microscope is accepted for routine use in the diagnosis and treatment of periodontal disease. This report addresses a number of these questions surrounding the use of the microscope in evaluating plaque and its role in the diagnosis and treatment of periodontal disease. PMID- 3859635 TI - A variation from classic oral manifestations associated with acute myeloblastic leukemia. A case report. AB - A case representing previously misdiagnosed acute myeloblastic leukemia associated with an absence of classical intraoral manifestations is presented. Platelet count was less than 15,000, and hematocrit was 20.3, yet clinical signs were limited to malaise and extreme gingival and mucosal pallor. The typical initial signs of gingival enlargement or hemorrhage never appeared, probably due to excellent plaque control by this patient. Mucosal color changes dictated the need for laboratory studies leading to a rapid and relatively early diagnosis. PMID- 3859636 TI - Effectiveness of a dentifrice containing formalin and sodium monofluorophosphate on dental hypersensitivity. AB - A double-blind investigation comparing a control dentifrice with one containing active ingredients was conducted to determine their effect on dentinal hypersensitivity in 67 human subjects. Baseline data was obtained by patient questionnaire, dental examination and by soliciting subjective responses to controlled mechanical and thermal stimuli. A calcium carbonate-based toothpaste constituted the base for both the control and active dentifrice. The active dentifrice contained 0.8% sodium monofluorophosphate and 1.3% formalin while the control lacked these ingredients. Dentifrices were supplied to patients on a random basis, and patients were instructed to brush twice each day for 28 days. Mechanical and thermal response as accomplished at baseline were obtained at 14 and 28 days after baseline on 60 subjects. A statistically significant reduction was not obtained in response to mechanical stimulus. The active dentifrice demonstrated a statistically significant reduction (P less than 0.05) to thermal stimulus at both 14 and 28 days. PMID- 3859637 TI - A clinical and histometric study of gingivitis associated with the human deciduous dentition. AB - This study examined the relationship between clinical indices and the histologic parameters associated with the gingiva of the human deciduous dentition. The plaque index, gingival swelling and color, probing depth, bleeding on probing, contact with adjacent teeth and the degree of root resorption of 58 deciduous teeth were recorded. The teeth were extracted with their surrounding gingiva and prepared for histologic examination. The area of epithelium and connective tissue with and without inflammatory cells was measured as well as the epithelial length from the gingival margin including the junctional epithelium. When these measurements were grouped according to the values of the clinical indices, nonmobile teeth were found to have less epithelium than those with mobility and gingiva with a healthy color had a significantly smaller inflammatory cell infiltrate than red gingiva. Bleeding and increased probing depth were not associated with the other clinical signs of inflammation. The amount of plaque did not correlate with the measures of clinical inflammation. The inflammatory cell infiltrate was present irrespective of whether the gingiva was clinically normal or not and the inflammation did not correlate with the amount of plaque. PMID- 3859638 TI - Pressures recorded during periodontal pocket irrigation. AB - Pressures arising during periodontal pocket irrigation with 5 ml and 20 ml disposable plastic syringes, a peristaltic pump and a Waterpik pulsating irrigator were measured with an in-line transducer and recorder in 11 patients. Three types of needles were used with each device; disposable 15-gauge straight and angled needles and a 15-gauge angled reusable needle. Measurements were made with the needle tips just within, and 3 mm into the pocket. With both the 5 ml and 20 ml syringes and all needles, pressures of 100- to 500-mm mercury were recorded. With the peristaltic pump, pressures of 70- to 340-mm mercury were recorded with all needles. The Waterpik apparatus produced pressures of not more than 60-mm mercury in all cases. PMID- 3859639 TI - The similarity of periodontal microorganisms between husband and wife cohabitants. Association or transmission? AB - Fourteen married couples were studied to determine the degree of similarity of the periodontal subgingival flora between paired contralateral sites and between couples. Six sites per person were sampled by a subgingival lavage technique and 10 darkfield morphotypes enumerated at each site. Cross-arch matching revealed a positive association for the presence of medium spirochetes, filaments, large motile rods and cocci (P less than 0.05). The odds that medium spirochetes will be detected at a subgingival site are elevated 7-fold, if present at the contralateral site. Similarly, the odds ratio for filaments was 4.0, 1.3 for large motile rods and 1.6 for cocci. Analysis of data, pairing between couples, revealed a positive association for medium spirochetes and filaments (P less than 0.05). No significant associations were found for randomized pairs of couples using matched sites as controls. The odds of medium spirochetes being present in a patient are 3 times greater if the morphotype is present in the spouse and 30% greater for filaments. Although an individual is "at risk" if these morphotypes are present in the spouse, analyses failed to demonstrate that the presence of any morphotype depends upon, or requires the presence of, that morphotype in the spouse. PMID- 3859640 TI - Changes of subgingival total colony forming units and black pigmented bacteroides after a single irrigation of periodontal pockets with 1.64% SnF2. AB - Periodontal pockets of 11 subjects were irrigated once with either 1.64% SnF2 or saline applied by syringe. Changes on the total anaerobic colony forming units (CFU) and black pigmented bacteroides (BPBs) of the irrigated pockets were assessed for 31 days. The results showed little change of the CFUs by either single application of SnF2 or saline. However, SnF2 irrigation produced a decrease in the BPBs for 1 week with the greatest effect (1/2 log reduction) being seen at 3 days after the irrigation. Some subjects had more impressive reductions in BPBs, yet four of the 11 subjects showed no reductions in BPBs in those sites irrigated with SnF2. Further studies with frequent irrigation intervals are necessary to evaluate the potential usefulness of SnF2 for subgingival irrigation. PMID- 3859641 TI - Peripheral calcifying odontogenic cyst (Gorlin cyst). AB - A case report of a rare peripheral calcifying odontogenic cyst is presented. The clinical, radiographic and histopathologic features of the lesion are discussed, along with the etiology, rate of occurrence and diagnosis. PMID- 3859642 TI - Gingival fibromatosis with hypertrichosis. A case report. AB - A case of gingival fibromatosis with hypertrichosis is reported in a 3-year-old girl. Partial recurrence was observed 6 months after surgical treatment. Psychological benefits resulting from the cosmetic improvement may outweigh the probability of recurrences in this rare condition. PMID- 3859643 TI - [Synthesis of anthraquinones using directed lithiation reaction]. PMID- 3859644 TI - Hemodynamic roles of thromboxane A2 and prostaglandin E2 in glomerulonephritis. AB - Eicosanoid metabolites may play a role in the pathophysiology of nephrotoxic serum nephritis (NSN), a model of immune renal disease. Our purpose was to determine the relative importance of vasoconstrictor [thromboxane A2 (TX)A2] and vasodilator [prostaglandin E2 (PG)E2] eicosanoids as mediators of hemodynamic and renal functional changes. Glomerular filtration rate (GFR; inulin clearance), and renal plasma flow (RPF; para-aminohippurate clearance/extraction) were measured in rats on day 1 and day 14 of NSN. Specific inhibitors of TXA2 synthesis and receptor binding, and cyclooxygenase inhibitors were used to determine the relative roles of TXA2 and PGE2. In vitro glomerular production of radioimmunoassayable PGE2 and TXB2 were measured after clearances. At 1 day GFR is decreased compared to control, 1.9 +/- 0.2 vs. 2.6 +/- 0.2 ml/min. RPF is numerically increased, 10.0 +/- 1.0 vs. 7.0 +/- 0.6 ml/min. By 14 days GFR is normal, 2.2 +/- 0.2 ml/min, as a consequence of significantly increased RPF, 11.7 +/- 1.0 ml/min. Glomerular production of PGE2 and TXB2 was increased 11- and 15 fold respectively at both 1 and 14 days. Pretreatment with OKY-1581, or acute treatment with UK-38,485, both inhibitors of TXA2 synthesis, had no effect on GFR or RPF in NSN rats. Addition of EP 092, a TXA2 receptor antagonist was similarly without effect. In contrast, acute treatment with the cyclooxygenase inhibitors meclofenamate or indomethacin resulted in a 50% decrease in both RPF and GFR; these inhibitors had no effect in control rats. We conclude that PGE2 (vasodilator) is of greater relative significance than TXA2 (vasoconstrictor) with respect to renal function in the NSN rat at 1 and 14 days. PMID- 3859645 TI - Renal tubular action of prostaglandin E2 on water and electrolyte excretion in the nonanesthetized chicken. AB - The tubular effects of prostaglandin (PG) E2 on electrolyte and water excretion were investigated in vitro in the nonanesthetized chicken by the Sperber technique. This technique allowed the administration of PGE2 directly into the peritubular space of one kidney by way of the venous portal circulation. When compared to the contralateral, noninfused kidney, PGE2 in the infused kidney (0.6 4.5 X 10(-10) mol/kg X min) induced a dose-dependent increase in urinary flow rate, a mild natriuresis and kaliuresis, with a concomitant decrease in urinary osmolality and an increase in free-water clearance. These effects occurred without changes in renal plasma flow or glomerular filtration rate. PGA2 (1.7-7.8 X 10(-10) mol/kg X min), another vasodepressor PG, did not modify electrolyte excretion. The tubular handling of PGE2 was observed by following the administration of [3H]PGE2. [3H] PGE2 was metabolized extensively during its renal tubular excretion. The 3H label was secreted actively into the urine by the organic anion transport system which was inhibited by novobiocin. Inhibition of the organic anion transport system did not modify the renal tubular effects of PGE2 on electrolyte and water excretion. These results indicate that PGE2 exerts a tubular inhibitory effect on sodium and water excretion, this action being located on the peritubular side. PMID- 3859646 TI - The use of a laser for debridement of incipient caries. AB - The mode-locked YAG laser effectively removes debris and/or stains from incipient carious lesions in pits and fissures. Prior investigations inferred that the energy levels used in this study would not cause pulpal injury or remove sound intact enamel. This would be a desirable step in sealant therapy and could provide an improved method of debridement in treating precarious lesions. PMID- 3859647 TI - Subpontic osseous proliferation. AB - Nine patients, five women and four men, demonstrated bone growth in an edentulous region of the posterior mandible covered with a pontic. The reasons for this bone growth could include genetic predetermination, functional stresses, and chronic irritation. This bone growth has important clinical and basic science implications. The condition was seen only in adults, only in the mandibular posterior region, and with a variety of pontic designs. Subpontic osseous proliferation was documented in nine patients, but no conclusion about the etiology was made. PMID- 3859648 TI - Spectrophotometric study of the relationship between body porcelain color and applied metallic oxide pigments. PMID- 3859649 TI - Accuracy of an earpiece face-bow. AB - The validity of the Hanau ear-bow to transfer an arbitrary hinge axis to a Hanau articulator was clinically compared with a Hanau kinematic face-bow. The study was conducted with 18 randomly selected patients. This investigation demonstrated a significant statistical difference between the arbitrary axis located with an ear-bow and the terminal hinge axis. This discrepancy was significant in the anteroposterior direction but not in the superior-inferior direction. Only 50% of the arbitrary hinge axes were within a 5 mm radius of the terminal hinge axis, while 89% were within a 6 mm radius. Furthermore, the ear-bow method was not repeatable statistically. Additional study is needed to determine the practical value of the arbitrary face-bow and to pursue modifications to improve its accuracy. PMID- 3859650 TI - How to promote and maintain good oral health in spite of wearing dentures. AB - A frank discussion at the beginning of treatment will inform the patient of what is possible in denture fabrication as well as in proper and responsible denture care and oral hygiene for the life of the patient. Dentures and mouths need examination and care for life. Only by regular visits to the dentist can this be accomplished. Dentures seldom change: mouths do. Regular visits allow professional evaluation of the oral tissues and the functioning jaw-joint mechanism to detect early treatment needs of the tissue and/or the denture. This interface must be intimate, vibrant, healthy, clean, and comfortable. To this end only, the professional person with a depth of knowledge, total education, keen insight to the anatomy, physiology, total body health, and the psyche and its interrelations to the inanimate prosthesis can make the denture an integral part of the living being. The dentist can keep it that way with the patient's cooperation. Dentures can be one of the best replacements of human body parts; but professional care and good home care are essential. PMID- 3859651 TI - Measuring wear of artificial teeth with stereophotography: Part I. PMID- 3859652 TI - A potentiostatic study of the corrosion behavior of anodized and nonanodized aluminum alloy. AB - The clinical implication of this study is that some improvement in the corrosion resistance of denture bases made with aluminum alloy D-214 may be obtained by anodization. However, since this study does not exactly duplicate an oral environment or take into consideration the variation in oral environments, it cannot be assumed that the additional corrosion resistance would be discernible in a particular patient. PMID- 3859653 TI - Prosthodontic considerations in the management of surgically compromised cleft palate patients. AB - Prosthodontic habilitation with speech aid prostheses for surgically compromised cleft palate patients has been discussed. It can be concluded that surgical redivision of the soft palate with removal of the levator veli palatini muscles as an aid to construction of a pharyngeal obturator is contraindicated. Surgical redivision with removal of the levator muscles prevents subsequent surgical procedures and commits the patient to a prosthesis for life. The management of nonfunctional pharyngeal flaps, large soft palate perforations, and patients with palatopharyngeal insufficiency and/or incompetency secondary to surgical repairs was also discussed. If the prosthodontist is routinely consulted in the initial treatment planning, alternatives to surgical management might be considered for patients with high potential for postsurgical deficiencies. PMID- 3859654 TI - Modular mouthstick system. PMID- 3859655 TI - Evaluation of arthrographically assisted splint therapy in treatment of TMJ disk displacement. AB - Eighty-two patients with audible clicking were evaluated and treated with splints made by using arthrographic assistance. In the course of this study, it became apparent that the later the opening click, the earlier the closing click. It was not always possible to auscultate or palpate either an opening or a closing click in many patients with arthrographic findings of disk displacement with reduction. Since the opening click was the only audible sound in some patients, clinical judgment alone cannot be used to replace the displaced disk at an optimal mandibular position. The elimination of the opening click does not always signify recapture of the disk. Maxillomandibular and incisal relationships limit the amount of protrusion possible to recapture the displaced disk. PMID- 3859656 TI - Three-dimensional analysis of cusp travel during a nonworking mandibular movement. PMID- 3859657 TI - Changing concepts in periodontics. PMID- 3859658 TI - Bulimia. A conceptual model for group treatment. PMID- 3859659 TI - Implications of recent dental health services research on the future of operative dentistry. AB - Recent dental health services research has shown that restorations often last only a few years and has suggested that the compromising nature of some basic operative skills is at least partly responsible. Further, gross inconsistencies of diagnosis and treatment planning exist among dentists, leading to a considerable lack of agreement about when restorative treatment is necessary. In the interests of high-quality dental care, some of the long-standing dogma concerning restorative dental services and attitudes toward them should be questioned. At the public health level, the dental profession should strive to find ways of achieving satisfaction with less emphasis upon restoring and re restoring teeth so that dentistry will attract the public and remain fully relevant to their needs. PMID- 3859660 TI - Analysis of the need for training, employment, and specialization in dental public health. PMID- 3859661 TI - Can dental hygienists affect the periodontal health of the nation? The dental hygienist: A primary care provider. PMID- 3859662 TI - Can dental hygienists affect the periodontal health of the nation? An assessment of the future of dental hygiene. PMID- 3859663 TI - The surface-specific caries pattern of participants in a school-based fluoride mouthrinsing program with implications for the use of sealants. AB - This paper describes the surface-specific changes in the DMFS after seven years of a school-based mouthrinsing program occurring in the elementary schools of the fluoride-deficient Three Village Central School District, Long Island, New York. The effectiveness of mouthrinsing was evaluated annually by comparing the caries prevalence of a random sample of participants to that of Three Village elementary schoolchildren examined in 1975, prior to the beginning of the program. Because sixth-grade children rinsed the longest and had the longest exposure to the caries challenge, only sixth-grade children who participated in the program are included in the analysis. Overall, they experienced a 50 percent reduction in dental caries; the reduction was not uniformly experienced by all surfaces. Proximal surface caries showed the greatest rate of change but the least absolute change, because the amount of proximal carious lesions was low initially. Occlusal surfaces showed the greatest absolute reduction in dental caries, whereas buccolingual surfaces had the lowest percentage reduction. The majority of the decayed or filled surfaces, 94 percent, involved pits or fissures. Therefore, it was concluded that the combined use of sealants and weekly fluoride rinsing could produce a virtual elimination of dental decay in elementary schoolchildren. PMID- 3859664 TI - Weekly rinsing with a fluoride mouthrinse in an unfluoridated community: results after seven years. AB - In the fall of 1975, 1,915 children in grades K through eight began a school based program of supervised weekly rinsing with 0.2 percent aqueous solution of sodium fluoride in an unfluoridated community in the Finger Lakes area of upstate New York. At baseline and annually thereafter, a random sample of children in grades K through 11 received clinical dental caries examinations. The prevalence of dental caries by grade at each of the follow-up dental examinations was compared to the grade-specific prevalence of dental caries at baseline. Overall, there was a decline of 57.8 percent in prevalence of caries in permanent teeth after seven years of rinsing. Among children in grades K through five, there was a decline of 35.4 percent in the prevalence of caries in primary teeth during the same time period. Tenth and eleventh grade children, after not rinsing for one and two years, respectively, continued to show the same trend toward lower caries prevalence as active rinsers. Caries prevalence among seventh and eighth graders after seven years of rinsing was not significantly different from caries prevalence among seventh and eighth grade lifetime residents of a nearby fluoridated community. A decline in the prevalence of caries in primary teeth among kindergartners prior to rinsing suggests that factors in addition to the mouthrinse program may have contributed to the decline in caries prevalence. PMID- 3859665 TI - Attempted insertion of a recessive autosomal gene into a semi-isolated population of Culex tarsalis (Diptera: Culicidae). PMID- 3859667 TI - Hippocrates or David Stockman? The days of complacency are over. PMID- 3859668 TI - An approach to identification of cine coronary anatomy. PMID- 3859666 TI - Gingival swelling due to metallic foreign body. PMID- 3859669 TI - Tumor lysis syndrome in a patient with American Burkitt's lymphoma. PMID- 3859670 TI - Threshold attainment--a new medical specialty. PMID- 3859671 TI - Suppression of the antibody response by a formamidine pesticide: dependence on the route of exposure. AB - These studies investigated the effects of exposure to chlordimeform (CDM), a formamidine pesticide, on selected in vivo immune parameters in the random bred CD-1 mouse. Further studies were done on the effects of this compound on the in vitro PFC response in C57BL/6 mice. Acute and 14-d exposure to CDM via the i.p. route resulted in a decrease in IgM antibody-forming (plaque-forming) cells (PFC) directed at the sheep red blood cell (sRBC) antigen when measured 4 d after i.p. immunization. This suppression was seen at doses as low as 20 mg/kg . d for 14 d. These same doses of CDM did not result in any alteration of cell-mediated immunity as measured by the delayed hypersensitivity response (DHR) to both keyhole limpet hemocyanin (KLH) and sRBC. Lymphocyte blastogenesis was increased in spleen cells from mice exposed to 40 mg/kg . d CDM in response to media alone, concanavalin A (Con A), and lipopolysaccharide (LPS). The in vitro PFC response by C57BL/6 mice was utilized to determine if CDM could suppress the antibody response due to a direct effect on the immune cells. CDM suppressed the in vitro PFC response only at concentrations that were directly cytolytic. A direct cytolytic effect was considered unlikely following exposure in the whole animal, since the suppression of the antibody response occurred in the absence of any effects on spleen cell number or spleen weight. To determine if route of exposure was a factor in the suppressive effects of CDM, 14-d studies were conducted administering CDM orally at doses up to 120 mg/kg . d. Both the CD-1 and C57BL/6 mouse were used to verify that a strain difference was not a factor. There was no effect on either the d 4 or d 5 antibody response, even though 43% of the mice exposed to 120 mg/kg died from the acute toxicity that can characterize this chemical. From an operational standpoint, these results indicate that the route of exposure of a compound relative to the route of administration of an antigen is an important consideration when determining the effects of that compound on an immune response. From an environmental standpoint, these results indicate that relatively high doses of chlordimeform do not result in consistent immunotoxicity as determined by the assays utilized. PMID- 3859672 TI - Relationship of changes in obesity to serum lipid and lipoprotein changes in childhood and adolescence. AB - To assess relationships between increases in triceps skin-fold thickness (TRSF) and changes in levels of serum lipids and lipoproteins in early life, a biracial sample of 1,598 five to 12 year olds were reexamined five years after an initial examination. Significant positive correlations, controlled for age, were observed between changes in TRSF and changes in levels of serum total cholesterol, serum triglycerides, and low- and very low-density lipoprotein cholesterol. Inverse associations between changes in TRSF and high-density lipoprotein cholesterol were weaker, but also statistically significant. Although females showed the largest increases in TRSF, most associations were stronger in males. Increases in estimated percentage body fat and ponderal index (kilograms per cubic meter) were highly associated with changes in TRSF, but showed slightly different associations with the serum lipids and lipoproteins. Results show that increases in obesity in youth are accompanied by an increasingly atherogenic lipoprotein profile. PMID- 3859673 TI - [Effect of superimposed jet oscillation on lung mechanics while using a Servo HFV unit]. PMID- 3859674 TI - [Experimental and clinical studies on cefmetazole in the field of internal medicine]. AB - Susceptibilities in various types of clinical isolates to cefmetazole (CMZ) were determined by the disk method and the serial agar dilution method for MIC measurement. CMZ showed high antibacterial activity for all Gram-positive cocci except E. faecalis, and for H. influenzae, E. coli, Klebsiella sp. and Proteus sp.. CMZ was administered on 33 patients with infections, mainly biliary tract infections, in the field of internal medicine. The clinical efficacy of the drug was 86.7% for infections of the biliary tract, 80.0% for respiratory tract infections, 100% for urinary tract infections and 76.7% for all cases. There were no adverse reaction or changes in laboratory findings caused by CMZ in any of the patients. PMID- 3859675 TI - [Analogs of prostaglandin-related substances and inhibitors of their formation and metabolism. Clinical application: gyneco-obstetrical diseases]. PMID- 3859676 TI - [Clinical evaluation of a cancer antigen CA 125 associated with ovarian cancer. (IV) Serum CA 125 levels through normal menstrual cycle and in benign diseases]. PMID- 3859677 TI - [Effect of ursodeoxycholic acid on biliary excretion of cefotiam in patients with percutaneous transhepatic biliary drainage]. PMID- 3859678 TI - [Increased salivary gland uptake of 67Ga-citrate--effect of radiotherapy]. PMID- 3859679 TI - [Significance of Ga-67-citrate tomographic scan in renal cell carcinoma]. PMID- 3859680 TI - [Nursing of a patient with acute pancreatitis developing during remission of acute lymphocytic leukemia--with special reference to easing of pain]. PMID- 3859681 TI - [Effect of a 3 beta-hydroxysteroid dehydrogenase inhibitor (trilostane) on Cushing's syndrome]. PMID- 3859682 TI - Polymorphisms of genetic markers in the red cell antigen, serum protein and red cell isoenzyme of the cats. PMID- 3859683 TI - A parallel analysis of cancer mortality among atomic bomb survivors and patients with ankylosing spondylitis given X-ray therapy. AB - Radiation-induced cancer mortality rates among atomic bomb survivors with doses of at least 100 rad and patients with ankylosing spondylitis given X-ray therapy have been compared for the first time. The estimated average mean bone marrow dose for the spondylitics is more than twice that for atomic bomb survivors, and yet spondylitics experienced only half the risk of radiation-induced leukemia of atomic bomb survivors. For sites that were heavily irradiated in the spondylitics, provisional estimates indicate comparable doses in the two studies, and similar levels of cancer risk were observed. For these sites, when information from the studies was combined, there were statistically significant excesses for cancers of the esophagus, stomach, lung, and ovaries, multiple myeloma, other lymphomas, and tumors of the spinal cord and nerves. Very high relative risks (RR's) for tumors of the spinal cord and nerves were observed in both studies. For sites that were lightly irradiated in the spondylitics, in addition to previously documented sites, there was a statistically significant excess of cancers of the liver and gallbladder among atomic bomb survivors. A previous subdivision of cancer sites into radiosensitive and other tissues was not supported by the atomic bomb survivor data. Changes in the rates of radiation induced cancers with age at exposure and time since exposure were studied and compared with the use of generalized linear modeling of the RR's and also by examination of the excess mortality rates. The level of agreement between the two studies was high; provided it is accepted that the reduced level of leukemia risk in the spondylitics is due to cell sterilization, no inconsistencies were found. For a group of solid tumors selected from heavily irradiated sites in the spondylitics, excess risk increased with both age at exposure and time since exposure and RR decreased with age at exposure, but it did not vary with time since exposure between about 5 and at least 30 years following exposure. The finding of a constant RR with time since exposure did not extend to all remaining neoplasms other than leukemia, because the RR for these neoplasms increased with time since exposure in atomic bomb survivors. PMID- 3859684 TI - Macrophage-mediated natural cytotoxicity of dimethyl sulfoxide-treated Friend erythroleukemia cells. AB - Dimethyl sulfoxide (DMSO) treatment of the Friend erythroleukemia cell line GM 979 markedly increased its susceptibility to natural cytotoxicity by splenocytes from normal inbred DBA/2 mice. Cytotoxicity occurred with normal adherent spleen cells as well as dextran-elicited peritoneal exudate (PE) cells but not with resident PE cells. Susceptibility of the leukemia cells to natural cytotoxicity increased to maximum levels upon treatment with 210 mM DMSO for 2-3 days. The natural cytotoxicity assayed by the 51Cr release procedure was first detectable after 9 hours of incubation and reached maximum levels by 24-30 hours. Although both DMSO and n-butyric acid induced rapid erythroid cell differentiation of the GM 979 cells, and both resulted in increased hemoglobin synthesis, only DMSO treatment enhanced the susceptibility of the cells to natural cytotoxicity by normal splenocytes. Cell-free supernatants from adherent spleen cells cocultured with DMSO-treated GM 979 cells for 6-15 hours were markedly cytotoxic for cultures of other chromium-labeled DMSO-treated leukemia cells. Supernatants from cultured adherent spleen cells alone, or lysates of DMSO-treated leukemia cells, did not possess cytotoxic activity. Resident peritoneal macrophages also had no cytotoxic activity against DMSO-treated cells, and culture supernatants from resident PE cells, even after incubation with DMSO-treated target cells, failed to show significant levels of cytotoxicity. These results indicate that normal splenic adherent cells as well as elicited PE cells have the ability to lyse DMSO treated leukemia cells. PMID- 3859685 TI - Interaction of dietary fat and protein in spontaneous diseases of Syrian golden hamsters. AB - The influence of interactions between dietary fat and protein on spontaneous diseases was investigated in Syrian golden hamsters fed two levels of corn oil [4.5 or 18 g/385 kilocalories (kcal)] with each of two levels of casein (9 or 36 g/385 kcal). The four diets were fed to separate groups in two different sequences: 1) Diets were given during weeks 3-7 and followed by control diet (9 g corn oil and 18 g casein/385 kcal), or 2) control diet was fed during weeks 3-7, and the four diets were fed from week 8 until death. Dietary interactions of fat and protein modified spontaneous degenerative, inflammatory, and proliferative diseases in hamsters. For example, amyloidosis in the liver, kidneys, spleen, and adrenal glands was reduced in females by feeding high-fat-high-protein (HF-HP) diet in comparison with low-fat-high-protein (LF-HP) diet during weeks 3-7 or by feeding LP diets at either fat level after 8 weeks. The incidence of hepatic abscess was highest in males consuming HP diet at either fat level after 8 weeks, and hepatic necrosis was observed most often in hamsters fed HF-HP diet after 8 weeks. Gastric and renal vascular calcification and nephrocalcinosis incidences were reduced by 50-100% in hamsters fed HF-HP diet after 8 weeks, and HF diet fed at this time reduced vascular calcification in the heart in both sexes and in the lungs in males. Inflammation was generally influenced similarly by diets fed either during weeks 3-7 or after 8 weeks. In the prostate gland, inflammation was observed most frequently in males fed HF-LP diet; however, in the vagina inflammation was elevated in females fed HF-HP diet and found in the gallbladder more commonly in hamsters fed HF-HP than in those given LF-HP. The incidence of colitis was decreased by giving HF-LP diet during weeks 3-7 or LF-LP diets after week 8. The incidence of gastric ulcer was high in males fed HF diets during weeks 3-7, and intestinal ulcers were high in those fed LF-LP at this time. The adrenal hyperplasia incidence was highest in males given HF-HP diet before or after 8 weeks and in females given this diet after 8 weeks. Similarly, ovarian and hepatic ductal hyperplasia was highest in females fed HF-HP diet after 8 weeks, and gastric and intestinal hyperplasia increased with the rise in fat at both protein levels in both sexes.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3859686 TI - Metabolism of benzo[a]pyrene on the nasal mucosa of Syrian hamsters: comparison to metabolism by other extrahepatic tissues and possible role of nasally produced metabolites in carcinogenesis. AB - The formation of metabolites of nasally instilled benzo[a]pyrene [(BP) CAS: 50-32 8] was determined. The study was prompted by a report that a high incidence of tumors occurred in tissues of the upper respiratory and alimentary tracts of Syrian hamsters exposed to BP aerosols. The esophagi of anesthetized hamsters were surgically catheterized so that radiolabeled material instilled as BP in the nose could be collected and analyzed for metabolites. About 50% of the instilled BP was metabolized in the nose and, potentially, would have been swallowed in an awake animal. In auxiliary experiments, homogenates of respiratory and alimentary tissues were tested for metabolic activity for BP. The nose, trachea, and lungs had about equally high activities on a per organ basis (5-7 nmol/hr), whereas all other tissues had considerably less activity. The results of the study indicate that nasal metabolism may be important in causing tumors in alimentary as well as upper respiratory tissues. PMID- 3859687 TI - Increased immunogenicity of a spontaneous variant clone of the 13762A rat mammary adenocarcinoma. AB - The 13762A rat mammary adenocarcinoma is weakly immunogenic and spontaneously metastasizes to regional lymph nodes and lungs. A clone (18A) was isolated from the parental tumor, which grew for 3 weeks in normal F344 rats, forming tumors up to 2-3 cm and some nodal metastases, and then completely regressed. Pretreatment of recipient rats with 450 rad permitted progressive growth and death due to metastases. The behavior of 18A has been stable during a period of 120 days in continuous culture or for 6 in vivo passages in irradiated rats. Regression of 18A was associated with intense tumor mononuclear leukocytic infiltration, whereas parental tumors of the same size recruited few leukocytes. Regressions occurred when 18A cells were placed intradermally, sc, or im, but iv injections were not rejected. Parental tumors grew progressively at all sites. Regressor rats were specifically immune to challenge with both 18A and parental tumor but not to an unrelated mammary carcinoma (R3230AC). Irradiated 18A tumor cell vaccines protected recipients against challenge with parental tumor, but similar vaccines of irradiated parental tumor cells were ineffective. The systemic adoptive transfer of immune lymphocytes more strongly inhibited the growth of established (7 days) 18A than parental tumor. It was concluded that the parental 13762A tumor contained stable variants that were significantly more immunogenic and more susceptible to immune attack than the parental tumor. Such variant tumor lines may be useful in the study of the host response to metastasis. PMID- 3859688 TI - An immunotoxin composed of monoclonal anti-Thy 1.1 antibody and a ribosome inactivating protein from Saponaria officinalis: potent antitumor effects in vitro and in vivo. AB - The ribosome-inactivating protein saporin, from Saponaria officinalis, was coupled by a disulfide bond to monoclonal anti-Thy 1.1 antibody (OX7) and to its F(ab')2 fragment. The immunotoxins were at least as toxic as the plant toxin ricin to the Thy 1.1-expressing cell lines AKR-A and BW5147 in tissue culture. They reduced the rate at which the cells incorporated [3H]leucine into protein by 50% at cell concentrations of 1.5-3 X 10(-11) and 3 X 10(-12) M, respectively. The toxic effect was specific. No toxicity was seen when the immunotoxins were applied to Thy 1.2-expressing EL 4 lymphoma cells at 3 X 10(-8) M, and a control immunotoxin made from an antibody (R10) of irrelevant specificity was without effect on AKA-A cells. Further, the treatment of spleen cells from AKR mice with OX7-saporin at 10(-8) M abolished their response to the T-lymphocyte mitogen concanavalin A, without impairing their response to the B-lymphocyte mitogen lipopolysaccharide. A single iv injection of OX7-saporin into nu/nu randombred mice bearing peritoneal AKR-A lymphoma cells prolonged the survival time of the animals by an extent corresponding to that expected if 99.999% of the tumor cells had been eradicated by the immunotoxin. None of the control materials (unconjugated OX7, unconjugated saporin, OX7 plus saporin, or R10-saporin) delayed tumor growth. The OX7 F(ab')2-saporin conjugate was also highly effective as an antitumor agent, although significantly less so than the conjugate made with intact OX7. Unexpectedly, the acute toxicity of saporin to mice (median lethal dose = 6.8 mg/kg) was elevated eightfold to sixteenfold by conjugation to OX7, R10, or OX7 F(ab')2. Histologic examination of recipients of the immunotoxin revealed gross damage to hepatic parenchymal cells and to the white pulp of the spleen, neither of which was caused by unconjugated saporin. Ricin A-chain coupled to OX7 antibody was one hundredfold to one thousandfold less effective than OX7-saporin as an antitumor agent in vivo, although the two immunotoxins were equally cytotoxic to AKR-A cells in vitro. PMID- 3859689 TI - Irradiation and prolactin effects on rat mammary carcinogenesis: intrasplenic pituitary and estrone capsule implants. AB - The implantation of silicone capsules that contained estrone and that were adjacent to grafts of anterior pituitary tissue in the spleens of adrenalectomized glucocorticoid-deficient inbred F344 rats resulted in high circulating prolactin (Prl) levels without the untoward effects of chronic hyperestrogenism or of grafts of Prl-secreting pituitary tumors. All peripheral serum estrone titers were below the titers in sera of proestrous untreated intact rats. Peripheral serum estrone and Prl levels were, however, a function of capsule surface area over the capsule sizes tested (12-74 mm2); the elevated Prl levels persisted for as long as 700 days. In adrenalectomized glucocorticoid deficient female rats, both 5 Gy gamma-irradiation alone and intrasplenic pituitary-estrone implants alone induced mammary carcinomas; the combination of these treatments induced a greater incidence of first carcinomas and reduced first carcinoma latency. There were, however, no marked differences in tumor incidence or latency due to differences in estrone capsule size. Finally, ovariectomy reduced first carcinoma risk in irradiated, pituitary-estrone implanted rats but did not change the time of maximum risk. Ovarian secretory activity thus persisted in such rats and ovarian hormones synergized with Prl in mammary carcinoma induction. PMID- 3859690 TI - Myeloproliferative and lymphoproliferative disorders in Tasmania. PMID- 3859691 TI - Gonadotrophins and ovarian cancer risk. PMID- 3859692 TI - Exposure of oil refinery workers to the lubricating-dewaxing process. PMID- 3859693 TI - Antibody-dependent cellular cytotoxicity in blood monocytes and alveolar macrophages in patients with lung cancer. AB - Antibody-dependent cellular cytotoxicity (ADCC), mediated by blood monocytes (MNC) and pulmonary alveolar macrophages (PAM) obtained from 31 patients with lung cancer and 13 control subjects, was determined. The ADCC of the PAM obtained from patients with lung cancer was significantly less (40% reduction) than that of the control group. This finding was demonstrated over the range of effector-to target cell ratios. The ADCC of blood MNC from the cancer patients was not different from that of control subjects and in both groups the ADCC of blood MNC was significantly greater than that of lung macrophages. Comparison of PAM ADCC in smokers and nonsmokers within the control group suggested that the lower activity in cancer patients was not simply an effect of smoking. PMID- 3859694 TI - Dietary fat consumption and survival among women with breast cancer. AB - An historical prospective study was conducted to examine the relationship of dietary fat intake to disease progression and length of survival of 953 women with breast cancer. Estimates of monthly fat intake were based on patient responses about usual frequency of consuming 33 foods and beverages prior to symptom onset. Average estimated monthly fat intake did not vary by stage of disease at diagnosis. When controlling for disease stage and patient age at diagnosis, the estimated risk of death at any time increased 1.4-fold for each 1,000 g in monthly fat intake. Separate analysis by disease stage showed this association to be most pronounced for subjects with advanced disease. The need for future studies to incorporate clinical and pathologic factors in the analysis, to distinguish between sources of dietary fat intake, and to ascertain dietary patterns subsequent to breast cancer diagnosis was noted. PMID- 3859695 TI - Risk factors for fibrocystic breast disease and its histopathologic components. AB - The relationship between various sociodemographic, reproductive, and other factors to the occurrence of fibrocystic breast disease was evaluated in a case control study undertaken at five Connecticut hospitals from 1979 to 1981. The study groups comprised 590 women with biopsy-proven fibrocystic breast disease and 1,018 women with other surgical conditions. Among the premenopausal women, multivariate analysis suggested that high socioeconomic status, Jewish religion, low parity, a history of benign breast disease, a history of breast cancer in the mother or a sister, and low Quetelet index were associated with increased odds ratios (OR) for fibrocystic breast disease. Similar analysis for the postmenopausal women revealed increased OR for women with high socioeconomic status, a late age at menopause, and a history of benign breast disease. Current smokers as well as those who had had a tubal sterilization had significantly reduced odds of fibrocystic disease. There was no convincing evidence of linear trends according to degree of epithelial atypia for any of the variables considered. Although some variation in the OR emerged in the analysis according to selected histologic components, the results provided little evidence that women with biopsy specimens exhibiting gross cysts, sclerosing adenosis, papillary hyperplasia, or papillomatosis showed epidemiologic similarities with breast cancer patients. PMID- 3859696 TI - Racial differences in breast cancer patients. AB - One thousand seventy-eight patients diagnosed with primary breast cancer were examined for racial differences in histopathologic and clinical parameters. There were no observed differences in tumor histopathologic type or tumor endocrine status between races. There were no differences with respect to time to breast tumor recurrence observed between black and white patients. However, differences were observed in factors that contributed to tumor stage at diagnosis and to tumor grade. Survival differences observed in univariant analysis of blacks vs. whites were explainable by the presence of more severe skin involvement, tumor grade, and tumor size at diagnosis in the black patients. PMID- 3859697 TI - Alcohol consumption and the risk of breast cancer in women. AB - The relationship between breast cancer and alcoholic beverage consumption was investigated in a case-control study of 437 women with breast cancer and 437 age matched controls admitted to the hospital for acute conditions apparently unrelated to alcohol consumption. Compared to the relative risks (RR) for women who had never drunk alcohol, the RR for those reporting 1-3 and more than 3 alcoholic drinks per day were 1.24 and 1.93, respectively. A similar positive trend in risk with increasing daily consumption was evident for wine alone, and the point estimates were above unity for beer and spirits. Allowance for all identified potential confounding factors (including the major risk factors for breast cancer and a few selected dietary items) did not appreciably change any of the alcohol-related estimates. The RR, however, were higher at younger ages and did not rise with increasing duration of use. Nonetheless, the findings of the present study and their similarity with those of another case-control study conducted in northeastern Italy indicate that the association between alcoholic beverage consumption and breast cancer in this population is probably real, though not necessarily causal. PMID- 3859698 TI - Gallstones and risk of gallbladder cancer. AB - The relationship between gallstones and gallbladder cancer was investigated in a case-control study in 131 subjects with gallbladder cancer and 2,399 subjects without gallbladder cancer. Included in the study were male and female subjects from 3 racial groups: white, black, and Southwestern American Indian. For the non Indian group there was a significant relationship between gallstones and gallbladder cancer, with an overall estimated relative risk (RR) of 4.4 (95% confidence interval, 2.6-7.3). For the Indian population the overall estimated RR was much higher: RR = 20.9; 95% confidence interval = 8.1-54. By the combination of the RR, the prevalence of gallstones, and the overall incidence of gallbladder cancer, the risk of gallbladder cancer was calculated in each population for subjects with untreated gallstones. In older subjects with gallstones the estimated 20-year cumulative risk for gallbladder cancer ranged from 0.13% in black males to 1.5% in Indian females. It was concluded that the risk of gallbladder cancer in untreated subjects with gallstones is heterogeneous, depending on race and sex as well as the period of exposure to gallstones. PMID- 3859699 TI - In vitro induction of human skin ornithine decarboxylase by the tumor promoter 12 O-tetradecanoylphorbol-13-acetate. AB - A method was developed for the in vitro induction by 12-O-tetradecanoylphorbol-13 acetate (TPA) of ornithine decarboxylase (ODC) activity in human skin punch biopsy samples. Addition of TPA to 1 ml serum-free minimum essential medium containing a single 3-mm human skin punch biopsy sample obtained from a surgical specimen resulted in an induction of ODC activity with a peak activity at 5 hours after TPA addition. In vitro induction of human epidermal ODC activity was dependent on the TPA concentration in the medium; about a twofold increase in ODC activity was observed 6 hours after the addition of 0.1 microM TPA, and about a fivefold increase in ODC activity was observed with 1 microM TPA. TPA also caused about a fivefold to sixfold increase in ODC activity in 3-mm skin punch biopsy samples from healthy volunteers. Human skin punch biopsy samples remained responsive to TPA induction of ODC activity even when stored in serum-free medium at 4 degrees C for 24 hours. A similar degree of induction of ODC activity by TPA was observed whether whole unfractionated human epidermis or a soluble epidermal extract was used for ODC assays. Increased ODC activity was the result of the increase in enzymatically active ODC protein, quantitated by a [3H]difluoromethylornithine-binding assay. Thus human skin, like mouse skin, is responsive to TPA for ODC induction. PMID- 3859700 TI - Papovavirus in epitheliomas appearing on lymphoma-bearing hamsters: lack of association with horizontally transmitted lymphomas of Syrian hamsters. AB - Several epizootics of lymphoma occurred in a colony of LVG hamsters contaminated with an unusual, horizontally transmitted, subviral, lymphomagenic agent. Hamsters with horizontally transmitted lymphoma, or others housed with these hamsters, occasionally developed epitheliomas bearing an unclassified papovavirus. The possibility that the virus present in the wart-like structures in our hamster colony could activate lymphoma was tested, and a search was conducted for mature virions in passaged epitheliomas and lymphomas. The agent responsible for the skin epitheliomas in our hamster facility was an icosahedral, 36-nm virion compatible with the morphology of a polyomavirus or simian virus 40. Horizontally transmitted lymphoma cells and epitheliomas contained hamster papovavirus (HaPV) DNA sequences detected by dot hybridization; however, such sequences were not found in extracts of lymphomas with oncogenic potential. In contrast to reports by other investigators, infection of hamsters with the papovavirus present in primary epitheliomas produced epitheliomas in good yield but was not reproducibly associated with lymphoma induction. These data confirm the observation that the HaPV is the causative agent of epitheliomas, but they suggest clearly that HaPV is not the agent responsible for lymphomagenesis. PMID- 3859701 TI - [Prognosis of surviving children with neurologic complications in the intensive phase of leukemia treatment]. AB - 32 children survived neurological complications during the treatment of ALL, AML or NHL (intracranial bleeding, convulsions, infections, severe neuropathy, severe EEG-slowing). Neurological, electroencephalographic and psychological examinations were performed 6 months to 6 years after the end of maintenance therapy. Findings were normal or borderline in about 70% of the patients. 20% presented with neurological signs, due to localised cerebral or peripheral lesions. However, these generally did not interfere to high degree with the daily living skills. The frequencies of school problems and of abnormal psychological findings were similar to these found in ALL patients without neurological complications. PMID- 3859702 TI - [Adult form of chronic myelogenous leukemia in childhood--a retrospective analysis of 20 patients]. AB - The initial findings and the course of 20 children and adolescents with adult CML from 10 children hospitals were analyzed retrospectively. The Philadelphia chromosome was found in 18 patients. Initial findings, the course and the prognosis were similar to those published from adult patients. 7 of the 11 children who received chemotherapy alone are still alive with a median survival time of 26 months (range: 14 to 68 months). One patient survived the third blast crisis. For 9 children with a bone marrow transplantation during the chronic phase (median time before transplantation 30 months) the follow-up of 7 months is still too short. 4 of these patients died following graft versus host reaction, 5 show no signs of a renewed occurrence of CML so far. Since CML is rare in children, there is little large scale experience. Hence, there is an urgent need for the prospective and cooperative study of these patients. PMID- 3859703 TI - [DNA aneuploidy in children with acute leukemia: I. Incidence and clinical significance within the scope of the BFM studies]. AB - Analyses of the cellular DNA content were carried out in 226 patients with acute lymphoblastic leukemia (ALL) and in 61 children with acute myeloid leukemia (AML) to assess the incidence and clinical significance of DNA aneuploidies. All children were treated within the BFM studies ALL 79/81 and 81/83 as well as AML 78 und 83. DNA aneuploidies were identified in ALL in 39,8% and in AML in 36,1% of cases. Within the ALL group a significantly higher rate of aneuploid DNA stemlines was observed for non-T/non-B ALL with 44,1% as compared to T-ALL with 14,3% (p less than 0,01). In AML the morphologic subgroups M 1/2 revealed a lower frequency of 21,7% DNA aneuploidies than M 4/5 leukemias with 44,4%. The rates of complete remissions were not different between patients with and without DNA aneuploidy neither in ALL nor in AML. In the study ALL 79/81, however, a tendency towards longer remissions for patients with DNA aneuploidy was found (p = 0.053) which could not be confirmed at present by the study ALL 81/83. In both ALL trials patients with the lowest pretherapeutic risk-score revealed the highest rate of aneuploid DNA stemlines. PMID- 3859704 TI - Chlamydia trachomatis in a high risk pregnant population. PMID- 3859705 TI - Bacteremic pneumococcal pneumonia: relationship of initial antimicrobial therapy to outcome. PMID- 3859706 TI - Estrogen sulfotransferase in human placenta. AB - Human placental estrogen sulfotransferase (ESFT) was partially purified from the term placental cytosol by (NH4)2SO4 precipitation and agarose gel chromatography. Additional purifications caused a rapid loss of the enzyme activity. The activity was abolished by isoelectrofocusing but partially retained by chromatofocusing. The value of pI of human placental ESFT is 5.8 and the same value was obtained for bovine adrenal ESFT. The enzyme protein was able to bind to the affinity resin, estradiol-17-hemisuccinyl-1,2-diaminododecane sepharose 4B, but difficult to be extracted by estradiol (E2). The extract of the affinity resin showed one major protein band at 68,000 dalton on SDS-polyacrylamide gel electrophoresis. Kinetic studies using partially purified ESFT revealed that E2 is the best substrate for this enzyme. The relative rate of sulfurylation of E2, estrone, estriol and dehydroepiandrosterone at 4 microM (Km for E2) is 1, 0.3, 0.08 and 0.08, respectively. PMID- 3859707 TI - Regulation of human placental progesterone synthesis in vitro by naturally occurring steroids. AB - A regulatory model of human placental progesterone synthesis is based on studies with isolated placental enzymes. Steroids causing a dose-dependent inhibition are listed in the standing order of their inhibitory potency (I50 (microM)/Ki value (microM)/type of inhibition: c = competitive and nc = non competitive). Cholesterol side chain cleavage enzyme (mitochondria): Mainly regulated by hydroxylated cholesterol derivates. No inhibition was observed by cholesterylesters and by other naturally occurring steroids tested. 5-ene-3 beta hydroxysteroid dehydrogenase-isomerase (mitochondria): 6 beta-hydroxyprogesterone (nc), dehydroepiandrosterone (0.32/0.82/c), 20 alpha-dihydroprogesterone (0.38/ /nc), progesterone (0.46/-), estrone (0.56/0.1/c), estradiol (0.1/0.8/c), 17 alpha-hydroxyprogesterone (2.1/-/nc), 17 alpha-hydroxypregnenolone (0.4/-/c), dehydroepiandrosterone sulfate (2.5/-/c), cortisone (5.0/-), cortisol (100/-). 20 alpha-hydroxysteroid dehydrogenase (cytoplasmic): estrone (0.26/0.7/c), estradiol (0.28/0.9/c), pregnenolone (4.4/9.2/c), 5 alpha-pregnan-3 beta-ol-20-one (4.6/ /nc), estriol (5.1/11.5/c); dehydroepiandrosterone (7.2/14.0/c), 5 alpha dihydrotestosterone (26.0/-/nc), progesterone (33.0/48.0/c), dehydroepiandrosterone sulfate (50.0/23.0/nc), and testosterone (59.0/63.0/c). An autoregulatory mechanism of placental progesterone synthesis is postulated which is in good agreement with data published by others proving that placental progesterone synthesis is independent of the endocrine organs of the mother and the fetus. PMID- 3859709 TI - Effect of 4-hydroperoxycyclophosphamide on leukemic and normal human myeloid progenitor cells. AB - The sensitivity of myeloid progenitor cells from normal subjects (N-CFU-GM) and from leukemic patients in complete remission (LR-CFU-GM) to 4 hydroperoxycyclophosphamide (4-HC) were compared to the sensitivity of leukemic progenitor cells (L-CFU) to this drug. The results were expressed as the dose of 4-HC needed to kill 90% (TD 90) of the progenitor cells. The mean TD 90 were respectively for N-CFU-GM : 59 (+/- 11 S.E.M.) nM ml-1 and for L-CFU 79 (+/- 6 S.E.M.) nM ml-1. Thus, L-CFU were equally sensitive to 4-HC as N-CFU-GM. Moreover, the mean TD 90 for LR-CFU-GM was 87 (+/- 5 S.E.M.) nM ml-1. Thus, the sensitivity of N-CFU-GM and LR-CFU-GM did not differ significantly from that of L CFU. These results are not encouraging for the use of 4-HC in vitro to eliminate the residual leukemic cells from autologous bone marrow of AML patients in complete remission. The sensitivity of L-CFU was modified neither by previous cytoreductive therapy (different from cyclophosphamide) nor by the time elapsed since diagnosis of AML. PMID- 3859708 TI - Affinity labeling of the cofactor-binding site of estradiol 17 beta-dehydrogenase of human placenta by 5'-p-fluorosulfonylbenzoyl adenosine. AB - An analogue of adenosine nucleotide, 5'-p-fluorosulfonylbenzoyl adenosine (5'-FSB Ado), appears to interact irreversibly with the cofactor-binding site of estradiol 17 beta-dehydrogenase of human placenta. This conclusion is based on the following observations: (1) The estradiol 17 beta-dehydrogenase is inhibited by 5'-FSB-Ado. When NAD+ is the variable component in the presence of saturated amount of steroid, the type of the inhibition is competitive in nature. When the steroid is the variable component, mode of the inhibition becomes non competitive. The results suggest reversible binding of 5'-FSB-Ado to the cofactor binding site of the dehydrogenase. (2) 5'-FSB-Ado inactivates irreversibly the estradiol 17 beta-dehydrogenase in time- and concentration-dependent manners, following pseudo-first-order kinetics. But, no inactivation is observed in the presence of p-fluorosulfonylbenzoic acid, suggesting that adenosine moiety of 5' FSB-Ado is essential for the affinity labeling of estradiol 17 beta dehydrogenase. (3) NADP+ protects completely estradiol 17 beta-dehydrogenase from the inactivation of 5'-FSB-Ado, whereas NAD(H) is partially protective against the inactivation, suggesting that phosphate moiety at 2'-position of NADP+ disturbs the covalent binding of 5'-FSB-Ado at or near the cofactor-binding site of the enzyme. (4) 2',5'-ADP shows the significant protection against the inactivation by 5'-FSB-Ado, but less effect is observed in the presence of nicotinamide mononucleotides. These results suggest that 5'-FSB-Ado is an affinity ligand for binding-site of adenosine nucleotide moiety of the cofactor. PMID- 3859710 TI - Insertion (10;11)(p11;q23q24) in two cases of acute monocytic leukemia. AB - An insertion (10;11)(p11;q23q24) was found in bone marrow metaphase cells from two children with acute monocytic leukemia (AMoL-M5b). This rearrangement involves a small chromosomal segment of 11q and may be misinterpreted as a deletion of 11q. Insertion (10;11) may represent a new recurring abnormality involving 11q associated with acute leukemia of the M5b type. PMID- 3859711 TI - Idarubicin alone or in combination with cytarabine and etoposide (3 + 3 + 5 protocol) in acute non-lymphoblastic leukaemia. PMID- 3859712 TI - Survival in Ph1-positive chronic myelocytic leukemia: relationship to findings at diagnosis and to disease kinetics after the first course of treatment. AB - Survival in 73 patients with Ph1-positive chronic myelocytic leukemia was correlated with remission duration and leukocyte doubling time after initial treatment with busulfan and also, with clinical and laboratory features recorded at the time of diagnosis. There was a significant relationship between remission duration and leukocyte doubling time (correlation coefficient 0.94). On multivariate analysis, the most important factor influencing remission duration (and doubling time) was the percentage of circulating blasts (p less than 0.001). The spleen size (p less than 0.02), Liver size (p less than 0.03) and WBC (p less than 0.03) also added significantly to model fit; however, once a second variable was entered into the model no other factor produced significant improvement in model fit. In univariate analyses, the remission duration, doubling time, percentage of circulating blasts, spleen and liver size correlated significantly with survival. Multivariate analysis indicated that the percentage of circulating blasts was the most important factor affecting survival (p less than 0.001), with the liver size adding significantly to model fit (p less than 0.05). Remission duration, leukocyte doubling time and spleen size did not significantly influence survival once the percentage of blasts was included in the model. Thus, evaluation of clinical and laboratory data at the time of diagnosis is more important for prognostic classification of patients than the measurement of relapse kinetics after initial treatment with busulfan. PMID- 3859713 TI - Defective chemotaxis and adherence in granulocytes from chronic myeloid leukemia (CML) patients. AB - Adherence and motility of granulocytes from chronic myeloid leukemia (CML) patients was compared with that of granulocytes from normal subjects. The percentage of non-adherent granulocytes was significantly higher in untreated CML patients and patients in relapse and acute blastic crisis (ABC) (P less than 0.01). Chemotactic Index (C.I.) of granulocytes moving in a gradient of a synthetic chemoattractant F-Met-Leu-Phe was measured by time-lapse cinematography. While 84.5 +/- 3.53% of normal granulocytes were motile, only 30.3 +/- 14.7% granulocytes from untreated patients, 33.8 +/- 21.3% granulocytes from relapse patients and 36 +/- 9.9% granulocytes from ABC patients were found to be motile. The C.I. of motile granulocytes from CML patients was significantly lower in untreated patients (P less than 0.05), in patients in relapse (P less than 0.01) and in patients in ABC (P less than 0.05), as compared to that of normal granulocytes. Visualization of cytoplasmic actin by indirect immunofluorescence, revealed the presence of actin in granulocytes from patients in all stages of the disease. Thus, granulocytes from CML patients were defective in directional locomotion. Organized actin filaments were found in the small percentage of motile cells still found in CML patients. PMID- 3859714 TI - International data collection and interpretation: a review. PMID- 3859715 TI - Descriptive epidemiology of childhood leukaemia and lymphoma in Great Britain. PMID- 3859716 TI - Recent epidemiological studies of leukaemia in the United Kingdom. PMID- 3859717 TI - The value of subtyping in studies of irradiation and human leukaemia. PMID- 3859718 TI - Collaborative group study of the epidemiology of acute lymphoblastic leukaemia subtypes: background and first report. PMID- 3859719 TI - Leukaemia and lymphoma in Kenya. PMID- 3859720 TI - Acute childhood leukaemia in Johannesburg. PMID- 3859721 TI - Observations on the epidemiology and subtypes of lymphatic malignancies in Israel. PMID- 3859722 TI - Leukaemia/lymphoma incidence in New Zealand: acute leukaemia subtypes in the South Island of New Zealand, 1983-1984. PMID- 3859723 TI - Cell markers and acute leukaemia subtypes in Chile. AB - A panel of monoclonal antibodies were used to define acute myeloblastic leukaemia (AML) and acute lymphoblastic leukaemia (ALL) with its different subgroups. Thirty-three patients were studied in a period of one year. ALL was diagnosed in 80% of the children and 20% of the adults. AML was present in 22% of the children and 78% of adults. In children, only one of seven was common ALL, three of seven were T-ALL and three of seven were B-ALL. Five of 12 were unclassifiable (U-ALL). In adults the 4 ALL were U-ALL. PMID- 3859724 TI - Competing for the dentist's attention: are you a proprietor or an entrepreneur? PMID- 3859725 TI - Buyer's guide to handpieces. PMID- 3859726 TI - To market is to grow. PMID- 3859727 TI - A pricing guide for denture labs: how to determine fees. PMID- 3859728 TI - The success triangle: the way to a better future. PMID- 3859729 TI - The emerging leisure class--how will it affect our industry? PMID- 3859731 TI - We need to restructure the schools. PMID- 3859730 TI - America wants to look good. PMID- 3859732 TI - Recombination between chloroplast DNAs does not occur in sexual crosses of Oenothera. AB - Crosses of Oenothera result in the transmission of chloroplasts from both parents to their offspring. In spite of this biparental inheritance, no wild-type recombinants were recovered from crosses between different chloroplast mutants. Since more than 7500 progeny were examined, the results indicate that recombination between the chloroplast DNAs of higher plants must be a very rare event. PMID- 3859733 TI - A gene affecting production of the Caenorhabditis elegans dauer-inducing pheromone. AB - A nematode mutant lacking pheromone activity does not enter the developmentally arrested dispersal stage called the dauer larva unless exogenous pheromone is added to the growth medium, indicating that the pheromone is required for wild type dauer larva formation. In contrast, a class of temperature-sensitive mutant forms dauer larvae even in the absence of detectable pheromone, indicating that such mutants bypass the normal pheromone requirement. A rapid bioassay of pheromone produced by individual nematodes has been developed for genetic analysis of pheromone production. PMID- 3859734 TI - Isolation of chloramphenicol acetyltransferase from soil bacteria for sterility testing of products containing chloramphenicol. AB - For large scale isolation of chloramphenicol acetyltransferase (CAT), five soil bacteria (Alkaligens faecalis cc; Escherichia coli c-18; Escherichia coli c-22; Escherichia coli c-24 and Klebsiella pneumoniae c-38) resistant to chloramphenicol (Cm) were tested with surface active agents such as sodium dodecyl sulphate (SDS), triton x-100, tween-80 and sodium deoxycholate (SDC). CAT leakage was satisfactory with SDS and SDC. Since SDS forms a covalent complex with certain proteins, extraction of CAT was performed with SDC in the present study. The enzyme was partially purified by a gel filtration procedure. The stability test showed that the CAT enzymes isolated from E. coli c-22 and K. pneumoniae c-38, were fairly stable even at room temperature. The CAT isolated in this way may be useful for sterility testing of Cm containing products. PMID- 3859735 TI - [Basocellular nevus: cutaneous lesions and upper and lower jaw cysts (II)]. PMID- 3859736 TI - [Microbiological and immunopathological aspects of inflammatory periodontolysis]. PMID- 3859737 TI - [The dental volunteer in Third World countries (I)]. PMID- 3859738 TI - [The dental volunteer in Third World countries (II)]. PMID- 3859739 TI - [Experiences in endodontics 85 (I)]. PMID- 3859740 TI - [Experiences in endodontics 85 (II)]. PMID- 3859741 TI - Possible treatment of some genetic deficiency diseases--a hypothesis. AB - A conceptual hypothesis for the possibility of treatment of genetic deficiency diseases utilizing genetic engineering techniques is presented. It is proposed that the gene responsible for the synthesis of a protein which is missing in the patient may be inserted into the patient's stem cells using already established techniques of gene splicing and delivery. The so modified stem cells, if put back into the patient's system (e.g. bone marrow), by virtue of their ability of self multiplication are likely to start synthesizing and continue to produce missing protein. Since stem cells are also capable of differentiating into various blood cells, the nucleated blood cells are also likely to begin production of the protein whose gene was inserted into the stem cells. In this way a blood protein synthesized by any organ (e.g. liver) in normal persons may be synthesized by stem cells or their differentiated forms in the patient resulting in correction of the deficiency. Certain genetically deficient animals may be used to prove this hypothesis. PMID- 3859742 TI - Long survival in an elderly patient with acute myeloid leukaemia after treatment with harringtonine. AB - A remission was achieved in a 73-year-old woman with acute myeloid leukaemia after treatment with harringtonine. The remission lasted 3 1/2 years and she remained alive at the four-year follow-up. PMID- 3859743 TI - Treatment of children with refractory acute lymphocytic leukemia with vincristine and diltiazem. AB - Six children with refractory acute lymphocytic leukemia were treated with vincristine combined with diltiazem. In four of five children who took the drug as scheduled, a cytolytic effect was observed. One child showed massive cell destruction which caused hyperuricemic nephropathy. The only adverse effect was atrioventricular block in two children, which was completely reversible. Increased neurotoxicity was not observed in any child. PMID- 3859744 TI - Acute and chronic hepatitis in childhood leukemia: a multicentric study from the Italian Pediatric Cooperative Group for Therapy of Acute Leukemia (AIL-AIEOP). AB - The incidence of acute and chronic liver damage and its relation to hepatitis B virus (HBV) infection was evaluated in 164 consecutive children with acute leukemia seen in ten Italian hemato-pediatric units. Thirteen out of 164 children (7.9%) had acute hepatitis (AH) during treatment, while 8/90 (8.8%) showed an acute exacerbation of liver damage within 6 months after therapy withdrawal. Seven of the 13 children with AH while on therapy were HBsAg positive. In 12/13 cases, liver disease progressed to chronicity. Five of eight children who developed AH after completion of treatment were HBsAg positive. Eighty-nine patients (54.2%) developed biochemical evidence of chronic hepatitis during therapy; 48/89 were followed after cessation of treatment and 33 of them showed persisting evidence of liver cell necrosis. Thirty-three out of 133 children (24.8%) tested for serum HBsAg were found positive: 26 (78.7%) of them developed chronic hepatitis. Sixty-four out of 133 patients were evaluated after cessation of treatment: Chronic hepatitis persisted in 16/22 HBsAg-positive (72.7%) and in 17/42 HBsAg-negative (40.4%) children during follow-up. The outcome of these liver diseases after treatment withdrawal did not differ significantly in relation to HBV serology, suggesting that viral rather than toxic agents were responsible for liver damage also in most HBsAg-negative patients. The high incidence of chronic HBV infection in children with leukemia found in this multicentric study could suggest a need for active immunization with HBV vaccine, but the efficacy of such approach in this clinical setting is still to be validated. PMID- 3859745 TI - A morphometric classification of acute lymphoblastic leukemia in children. AB - In order to reduce the subjective errors in subtyping leukemic lymphoblasts using the French-American-British (FAB) classification, computer-assisted morphometry was used. Bone marrow smears obtained at diagnosis from 99 children with acute lymphoblastic leukemia (ALL) were analysed by this method and compared with the subjective FAB classification. The results confirm that lymphoblast morphology, as a single variable, is a very significant predictor of survival in ALL. This computer-assisted morphometric analysis would be of great value in large-scale clinical trials in ALL. PMID- 3859746 TI - Clinical manifestations of acute leukemia. PMID- 3859747 TI - The allergenic potential of metals in dental alloys. PMID- 3859748 TI - AIDS: an update. PMID- 3859749 TI - The future of dentistry--the crisis and the challenge. PMID- 3859750 TI - Prevalence of HTLV-III antibody in American blood donors. PMID- 3859751 TI - Systemic pseudallescheriasis in a patient with acute myelocytic leukemia. AB - Presented is a case of widely disseminated systemic pseudallescheriasis in a 41 year old male with acute myelocytic leukemia. The immediate cause of death appeared to be due to an extensive invasion of the lungs which showed massive intra-alveolar hemorrhages, congestion, mycotic thrombi, and multiple fungal lesions in all lobes. Pseudallescheria boydii was diagnosed histopathologically by virtue of its characteristic conidia present in miliary lesions throughout a wide range of host's tissues, including the brain and the thyroid. Three antemortem blood specimens cultured during the patient's final hospital stay were positive for the fungus. It was concluded the fungemia was responsible for the rapid and widespread dispersion of P. boydii in this debilitated patient who was granulocytopenic and immunosuppressed. PMID- 3859752 TI - Immune response restored by gene therapy in mice. PMID- 3859753 TI - AIDS. Blood test trials inconclusive. PMID- 3859754 TI - Role of the serotonin uptake carrier in the neurochemical response to methamphetamine: effects of citalopram and chlorimipramine. AB - The role of the serotonin uptake carrier in the methamphetamine-induced depression of serotonin synthesis was examined. In vivo, coadministration of citalopram or chlorimipramine with methamphetamine blocked the irreversible depression of tryptophan hydroxylase activity observed in the neostriatum and cerebral cortex after repeated administration of high doses of methamphetamine. The methamphetamine-induced reduction of neostriatal serotonin and 5 hydroxyindoleacetic acid was also attenuated by the two uptake inhibitors. In contrast, neither drug antagonized the depression of neostriatal tyrosine hydroxylase activity observed after methamphetamine administration. Citalopram also blocked the reversible inhibition of tryptophan hydroxylase activity observed after the acute administration of methamphetamine. In vitro, citalopram significantly inhibited methamphetamine-induced [3H]serotonin release from neostriatal slices. The results demonstrate that inhibitors of the serotonin uptake carrier can antagonize both the in vivo and in vitro effects of methamphetamine on serotonergic neurons. Furthermore, the methamphetamine-induced depression of serotonin synthesis is dependent upon a functional serotonin uptake system. PMID- 3859756 TI - Ureteropyeloscopy. PMID- 3859757 TI - Transurethral endoscopy of the upper urinary tract. PMID- 3859755 TI - [Prostaglandins in the induction of labor]. PMID- 3859758 TI - Long-term survival with metastatic uterine sarcoma. PMID- 3859759 TI - Neutropenia associated with procainamide. PMID- 3859760 TI - The Berwid case. PMID- 3859761 TI - Esophageal ulceration associated with oral penicillin in Marfan's syndrome. PMID- 3859762 TI - Accidents in the skilled nursing facility. PMID- 3859763 TI - Rigid ureteropyeloscopy. PMID- 3859764 TI - Informed consent. The New York approach. PMID- 3859765 TI - Normal adolescent development. Helping teenagers cope with change. PMID- 3859766 TI - Leiomyosarcoma of the ovary. PMID- 3859767 TI - Metastatic leiomyosarcoma of iliac bone. PMID- 3859768 TI - Recurrent chronic epididymitis as an initial symptom of colovesical fistula. PMID- 3859769 TI - Stage II benign cystic teratoma with malignant squamous degeneration. PMID- 3859770 TI - Posterior dislocation of the sternoclavicular joint. PMID- 3859771 TI - Abdominal distention associated with lactose malabsorption in a premature infant. PMID- 3859772 TI - Familial antithrombin III deficiency. PMID- 3859773 TI - Insulin pumps and other recent advances with insulin delivery in the treatment of diabetes mellitus. PMID- 3859774 TI - Driving and diabetes. PMID- 3859775 TI - Treatment of pneumonia with imipenem/cilastatin. AB - This pilot study assessed the efficacy, safety and tolerance of intravenously administered imipenem/cilastatin in the treatment of adults hospitalised with community acquired pneumonia. Thirteen patients were treated with 500 mg imipenem and 500 mg cilastatin eight hourly for a minimum of five days. Eleven patients (85%) had a clinical cure; (Legionella pneumophila was the pathogen in four, Streptococcus pneumoniae in one, Branhamella catarrhalis in one, no pathogen identified in five). One patient had a partial response (Staphylococcus aureus); and one patient was a treatment failure (Haemophilus influenzae and Klebsiella ozaenae). Clinical and laboratory side effects were mild, reversible and did not require treatment to be stopped. We conclude that the combination of imipenem and cilastatin was effective as a single agent in the treatment of the majority of these patients with hospital referred community acquired pneumonia. PMID- 3859776 TI - Readmissions for treatment for alcoholism. AB - First admissions and readmissions for alcoholism have risen steeply in recent decades. This study looked at readmission histories for four cohorts of alcoholics first admitted to inpatient psychiatric treatment in 1967-68, 1973, 1977 or 1979. Over the twelve years the first cohort was observed, alcoholics on average spent 254 days in treatment and had 2.14 alcohol-related readmissions. However the distributions were very skewed: 50% stayed less than 92 days and 45.6% had no readmissions at all. All four cohorts yielded similar results over comparable time periods and all showed markedly skewed distributions reflecting the diversity of readmission histories among alcoholics. Policy decisions about alcoholism inpatient treatment must take account of this diversity. PMID- 3859777 TI - Zoonoses. PMID- 3859778 TI - Flecainide acetate in atrial fibrillation. PMID- 3859779 TI - A cure for snoring? PMID- 3859780 TI - Multiple pregnancies and perinatal deaths. PMID- 3859781 TI - Abortion and medical discipline. PMID- 3859782 TI - Oral enoxacin used to cure spinal osteomyelitis due to aminoglycoside-resistant Pseudomonas aeruginosa. PMID- 3859784 TI - [Experimental study on tongue incisions using a CO2 laser--microangiographic observations of the healing process]. PMID- 3859783 TI - City-wide survey of drug patterns among non-institutionalised retarded persons. PMID- 3859785 TI - [A morphological study on the hard and soft tissue profiles of thumbsucking children using roentgen cephalograms]. PMID- 3859786 TI - [Teeth and expression--relation between the teeth and lips in smiling]. PMID- 3859787 TI - [Effect of formaldehyde on cultured cells]. PMID- 3859788 TI - [Effect of Dexamethasone on collagen synthesis in cultured cells]. PMID- 3859789 TI - [Multivariate analysis of diets and dental caries among 3-year-old children]. PMID- 3859790 TI - [An experimental study of the effect of calcitonin on alveolar bone using microradiography and 45Ca autoradiography]. PMID- 3859791 TI - [An anatomical study of the teeth of Varanus niloticus]. PMID- 3859792 TI - [Tooth impedance diagrams at maximum potential applied by a finite-sine alternating current during rest conditions]. PMID- 3859794 TI - [Dentin impedance under applied alternating potentials]. PMID- 3859793 TI - [Bone phase angle deviation under applied alternating potentials during constant conditions]. PMID- 3859795 TI - [Polarization of platinum electrodes with alternating current]. PMID- 3859796 TI - [Psychophysiological responses of dental students (1st and 6th year) to the presence of a parent in the operatory. The study of stimulus of dental students' visual perceptions using the Visicon eye-camera]. PMID- 3859797 TI - [Synthesis of proline-rich proteins in salivary glands of isoproterenol-treated rats]. PMID- 3859798 TI - [Fused teeth in deciduous and permanent anterior teeth]. PMID- 3859799 TI - Staff theft. PMID- 3859800 TI - Can a child consent to dental treatment? PMID- 3859801 TI - Diskectomy of the temporomandibular joint: a double-contrast arthrotomographic follow-up study. AB - The manner in which temporomandibular joint soft-tissue structures remodel following diskectomy has been assessed by double-contrast arthrotomography. Pre- and postoperative arthrograms were compared in ten joints. The intra-articular soft-tissue cover of the bony components was frequently thicker 1 to 3 years after the operation. The most pronounced thickening was observed in the mandibular fossa, whereas a thinner cover was found on the condyle and the tubercle. Development of a thick soft-tissue cover on the articulating surfaces indicates that the temporomandibular joint has a capacity articulating surfaces indicates that the temporomandibular joint has a capacity for functional adaptation following diskectomy. This may be an essential factor for a favorable postoperative result. PMID- 3859802 TI - Huge growth potential of the nasolabial cyst. AB - Two cases of nasolabial cyst are reported. The first case demonstrates the typical features of this rare soft-tissue developmental cyst. In the second case a huge cyst caused severe facial deformity. This case demonstrates the huge growth potential of the nasolabial cyst. PMID- 3859803 TI - The syndrome of inappropriate secretion of antidiuretic hormone in the maxillofacial trauma patient. AB - The maxillofacial trauma patient whose neurologic status undergoes a rapid and serious deterioration may have a severe hyponatremia secondary to the inappropriate secretion of antidiuretic hormone (SIADH). Other causes of hyponatremia must be ruled out, especially posttraumatic cerebral salt wasting, which necessitates a different mode of therapy. A case of SIADH is reported, and the work-up and differential diagnosis of posttraumatic hyponatremia are discussed. PMID- 3859804 TI - The use of cryotherapy in the management of paroxysmal trigeminal neuralgia. PMID- 3859805 TI - Chronic oral herpes simplex virus infection in immunocompromised patients. AB - Recurrent herpes simplex virus infection is usually benign and self-limiting, but in immunosuppressed patients it can be a chronic destructive process. Eight patients with chronic aggressive herpes simplex virus infection of the oral mucosa are described. All cases occurred in immunocompromised patients. The distinctive clinical presentation of the oral lesions, the diagnosis, and treatment are discussed. PMID- 3859806 TI - Atypical facial pain: a retrospective study. AB - Among the most challenging patients seen for evaluation by a health care practitioner are those suffering from the atypical facial pain syndrome. They have almost inevitably been subjected to extensive treatment which either has had no effect on the symptoms or has aggravated them. This article reports a retrospective study of thirty-four randomly selected cases of atypical facial pain that have been seen by a multidisciplinary pain group. PMID- 3859807 TI - Oral submucous fibrosis in a 4-year-old girl. AB - A rare case of oral submucous fibrosis in a 4-year-old Indian girl is presented. The condition is defined, and the clinical and laboratory features are discussed. Different treatment modalities and current theories of etiology are presented. Finally, the importance of regarding this condition as a precancerous lesion is supported. PMID- 3859808 TI - Bilateral palatal myoclonus. Pathophysiology and report of a case. AB - A case of palatal myoclonus in a 52-year-old woman is described. This is a rare condition in which the rhythmic contraction of the palatal musculature gives rise to otologic symptoms. The clinical symptoms, pathophysiologic characteristics, and recommended treatment modalities are discussed. PMID- 3859809 TI - Orofacial aspergillosis in acute leukemia. AB - The clinicopathologic characteristics of orofacial aspergillosis in thirteen hospitalized patients who developed the infection while receiving chemotherapy for acute leukemia are described. Clinically, the primary sites of infection, in decreasing order of frequency, were the paranasal sinuses, nasal cavity, mouth, and facial skin; the corresponding order for the secondary sites was orbit, nasal cavity, facial skin, and mouth. Pathologically, the fungal lesions in the nasal, oral and sinusoidal cavities were black, ulcerated, and escharotic due as a direct result of tissue destruction by the organism and an indirect result of thrombotic vascular infarction. The orbital lesions were deep red, granulomatous, and productive of proptosis and ectropion. Seven of the thirteen patients had concomitant pulmonary aspergillosis. The orofacial infections were not responsive to antifungal therapy in the absence of remission of the leukemia and restoration of depressed host defenses. In two patients who did achieve remission, the aspergillosis was controlled by the intravenous administration of amphotericin B. PMID- 3859810 TI - A pilot study of the clinical problem of regionally anesthetizing the pulp of an acutely inflamed mandibular molar. AB - The diplomates of the American Association of Endodontists were surveyed regarding difficulties in regionally anesthetizing acutely painful mandibular molar teeth. Frequently patients developed evidence of adequate regional block anesthesia but experienced pain when the dentist attempted access. A pilot projection was undertaken to determine if a scientific basis existed for this problem. With the animal under general anesthesia, the mandibular nerve of a cat was isolated and then regionally blocked. A stimulating electrode was implanted in a cuspid tooth and a receiving electrode in the cortex of the brain. When a state of inflammation was created in the tooth in the presence of a regional block, there was an increasing cortical response to this stimulation. It was concluded that the pilot project offered a realistic technique for the study of this clinical entity. PMID- 3859811 TI - Radiographic characteristics of central ossifying fibroma. AB - Sixty-four instances of histologically documented ossifying and/or cementifying fibromas were evaluated. Adequate radiographs were available in 43 of the cases. Most of these benign fibro-osseous neoplasms occurred in women, with a predilection for the third and fourth decades. Six distinct radiographic patterns could be identified: (1) radiolucent, superimposed over teeth or residing in edentulous regions (28%); (2) radiolucent with opaque foci, lying in edentulous areas or superimposed over teeth (42%); (3) radiolucent, interposed between contiguous teeth (5%); (4) radiolucent with opaque foci, interposed between contiguous teeth (9%); (5) multilocular expansile (7%); and (6) aggressively expansile with opacification (9%). All lesions exhibited well-defined margins. Root resorption was a feature in 11% of the sample, and root divergence occurred in 17% of the cases. PMID- 3859812 TI - Inadequate treatment: a pathway to surgery. AB - A patient developed postendodontic pain 3 years after undergoing root canal therapy in a maxillary first premolar tooth. Radiographic examination revealed that a recently extracted impacted second premolar had originally obscured the x ray view of a third root on the first premolar. Endodontic therapy in the unfilled root was rejected because the tooth had been restored with full coverage. Apicoectomies and retroseals were performed on all roots, and the tooth became asymptomatic. PMID- 3859813 TI - Microfocus roentgenographic magnification in dentistry. PMID- 3859814 TI - Identification of an anteriorly displaced meniscus in vitro by means of three dimensional image reconstructions. AB - Computerized tomography has some limitations for diagnosis of internal derangements of the TMJ. The use of three-dimensional image reconstructions of CT data may enhance the diagnostic utility of CT. In a cadaver simulation, three dimensional imaging was able to demonstrate the location of a displaced meniscus which was not obvious in two-dimensional sections. Location of the meniscus was aided by the use of a "transparency mode" in displaying the data. PMID- 3859815 TI - Diagnostic accuracy on detection of proximal enamel lesions in nonscreen radiographic performance. AB - The effect of differences in image contrast and mean density associated with Kodak Ektaspeed and Ultraspeed films was examined in association with systematic variations in exposure geometry and beam characteristics. Performance was expressed in terms of diagnostic accuracy obtainable by eight dentists who attempted to detect a known distribution of induced proximal enamel lesions in a radiographic phantom. Differences associated with the two types of film and x-ray beam quality were found to have small but statistically significant effects on diagnostic performance. The other factors of film density and projection geometry influenced diagnostic accuracy much more. The largest source of variation was observed among the individual dentists serving as observers. PMID- 3859816 TI - Open wide please. PMID- 3859817 TI - Foreign body in tongue. PMID- 3859818 TI - Diagnosis of Eagle's syndrome. AB - A case of Eagle's syndrome is presented. Although the incidence of styloid process elongation in the population is fairly common, only a small percentage of these patients exhibit symptoms associated with Eagle's syndrome. It is important for the dental practitioner to be aware of this anomaly and to understand its anatomic basis. PMID- 3859819 TI - The sublingual dermoid cyst. Report of five cases and review of the literature. AB - Dermoid cysts are commonly found throughout the body. However, they occur only rarely in the oral cavity; most commonly they are sublingual. This article reviews five cases of sublingual dermoid cyst, which have been the only ones seen in the diagnostic indices of the Royal Dental Hospital, Leicester Square, the Middlesex Hospital, and Queen Victoria Hospital, East Grinstead. PMID- 3859820 TI - Serum antibody responses to indigenous oral mucosal antigens and selected laboratory-maintained bacteria in recurrent aphthous ulceration. AB - Sera from subjects with recurrent aphthous ulceration (RAU) and control subjects were tested for relative levels of IgM, IgG, and IgA antibodies against eight selected laboratory-maintained bacteria, including Streptococcus sanguis which has been implicated in the etiopathogenesis of RAU. There were no differences in relative serum antibody levels for any isotype against any bacteria between control and RAU groups. RAU subjects with active lesions were then paired with control subjects, and each serum was tested against sedimentable material derived from the oral mucosa of each pair member. The analysis of data indicated that RAU and control subjects had similar levels of serum antibodies to indigenous mucosal antigens, but RAU subjects had significantly less antigenic material than control subjects. PMID- 3859821 TI - An unusual presentation of opalescent dentin and Brandywine isolate hereditary opalescent dentin in an Ashkenazic Jewish family. AB - Two children of Austrian Ashkenazic Jewish background, related as second cousins, have a variant of opalescent dentin in their deciduous teeth. This has been classified by Witkop as Brandywine isolate hereditary opalescent dentin and by Shields as dentinogenesis imperfecta type III. One of the children also has dysmorphic facial features, seizures, and severe mental retardation. Her mother has dysmorphic facial features and mild mental retardation. The mothers of both children and several other family members have classic opalescent dentin (dentinogenesis imperfecta type II). Radiographs of the deciduous and permanent dentitions of one mother showed obliterated pulp chambers. Confirmation of obliterated pulp chambers in the deciduous teeth of the mother of a child with Brandywine isolate hereditary opalescent dentin makes it unlikely that classic opalescent dentin and Brandywine isolate hereditary opalescent dentin are separate genetic disorders. Evidence from this family supports the hypothesis that Brandywine isolate hereditary opalescent dentin is a variant of opalescent dentin. PMID- 3859822 TI - The traumatic bone cyst: a new dimension. AB - A case of an unusually large traumatic bone cyst of previously unreported size and location is presented. The presence of the cyst 5 years before its current discovery was confirmed on previous radiographs. This aggressive traumatic bone cyst adds another dimension to the usual course of this lesion. PMID- 3859823 TI - Intraoral benign mesenchymoma. AB - Benign mesenchymoma is a tumor composed of two or more benign mesenchymal elements in addition to fibrous connective tissue. A case of benign mesenchymoma of the lip in a 38-year-old man is presented, and the literature is reviewed. PMID- 3859824 TI - Chondrosarcoma metastatic to the oral cavity. AB - Metastases to the oral cavity from nonoral malignant lesions occur rarely. We report the case of a woman with chondrosarcoma of the pelvis in whom gingival metastases, in addition to pulmonary, skin, and brain metastases, developed. Clinical course, x-ray correlation, histopathologic review, and treatment modalities are described. The six previously reported cases of chondrosarcoma metastatic to the oral cavity are tabulated and analyzed. Metastases should be included in the differential diagnosis of gingival lesions in patients with prior or current nonoral malignant tumors. PMID- 3859825 TI - Effects of vitamin E dietary supplements on the exposed dental pulp in rats. AB - Forty adult male Sprague-Dawley rats were divided into two equal groups, control (Group 1) and experimental (Group 2). Group 2 received 100 mg of dl-alpha tocopherol acetate (vitamin E) twice weekly by the oral route. After 2 weeks the animals in both groups were subjected to pulp exposures that were capped with zinc oxide and eugenol and to pulp exposures that were left open. The oral administration of 100 mg dl-alpha-tocopherol acetate in the Group 2 animals was continued for periods of 1 day to 4 weeks after the operative procedures. The animals were killed 1 day, 3 days, and 1, 2, and 4 weeks after the procedures. The most severe, prolonged, and extensive pulpal disease was seen in both groups when the pulp exposure was left open to the oral flora. The most favorable repair and healing results took place after 1, 2, and 4 weeks in the Group 2 animals in pulp exposures covered with zinc oxide and eugenol. PMID- 3859826 TI - Abscess formation induced in rabbits with bacteria-filled subcutaneous implants that simulate the infected dental root canal. AB - Short-term and semi-long-term tissue reactions to a mixture of "endodontopathic" bacteria are described. The bacteria are enclosed in experimental implant tubes simulating some aspects of the infected dental pulp. Localized abscesses develop in response to mixed bacterial contents of the implants. No abscess formation occurred with pure cultures (that is, either component of the mixture). Pathogenic inocula attract leukocytes to the adjacent tissues, which become inflamed and cause influx of leukocytes into the lumen of the implant proper. PMID- 3859827 TI - Absorbed doses from temporomandibular joint radiography. AB - Thermoluminescent dosimeters were used in a tissue-equivalent phantom to measure doses of radiation absorbed by various structures in the head when the temporomandibular joint was examined by four different radiographic techniques- the transcranial, transorbital, and sigmoid notch (Parma) projections and the lateral tomograph. The highest doses of radiation occurred at the point of entry for the x-ray beam, ranging from 112 mrad for the transorbital view to 990 mrad for the sigmoid notch view. Only the transorbital projection a radiation dose to the lens of the eye. Of the four techniques evaluated, the lateral tomograph produced the highest doses to the pituitary gland and the bone marrow, while the sigmoid notch radiograph produced the highest doses to the parotid gland. PMID- 3859828 TI - Modification designed to improve instruction in intraoral dental radiography. AB - A modification of the Rinn Snap-A-Ray film-holding device which facilitates more accurate visual alignment of cone and film is described. A double-blind study was undertaken to evaluate the modified instrument as compared to the standard instrument. The results indicated a reduction in the number of errors of all types by the modified instrument. The greatest reduction was observed in cone cutting errors. PMID- 3859829 TI - A new positioning device for extraoral radiography with conventional dental x-ray machines. AB - Conventional dental periapical x-ray machines are frequently used for taking extraoral radiographs. Such views as the anteroposterior, lateral skull, oblique, Caldwell, Waters, etc. require large focus-to-film distances. A positioning device that makes long-distance positioning easy and foolproof has been developed. This eliminates undesirable repetition and therefore reduces unnecessary exposure of the patient. PMID- 3859830 TI - Factitious rhinolith. PMID- 3859832 TI - [The role of neutropenia in bacterial infections in children with malignant diseases under cytostatic therapy]. PMID- 3859831 TI - Fracture of the hyoid bone: an unusual case. PMID- 3859833 TI - [Monoclonal antibodies in the diagnosis of acute leukemia]. PMID- 3859834 TI - [Active nonspecific immunotherapy with the fungus cell wall polysaccharide "mannozym" in acute lymphatic leukemia in childhood]. PMID- 3859835 TI - Suggested guidelines for asepsis in root canal therapy. PMID- 3859836 TI - The odontogenic keratocyst in a lateral periodontal location: a case report. PMID- 3859837 TI - Human X chromosome markers and Duchenne muscular dystrophy. AB - Two DNA markers, a random DNA fragment 754 and the cDNA sequence encoding the gene for ornithine transcarbamylase (OTC) have been studied in kindreds segregating for Duchenne muscular dystrophy. 754 and OTC are located close physically to the mutation in the region Xp21 below the breakpoints in two Duchenne females. The genetic distance was found to be approximately 10cM between 754 and DMD (two crossovers in 26 meioses) and to be approximately 10cM between OTC and DMD (two crossovers in 26 meioses). Physical data suggest the order DMD 754-OTC. The frequency of recombination compared to physical distance between these markers and DMD suggests that there may be a hot spot of recombination. The relevance of these observations for the isolation of the DMD mutation and clinical use of these probes is discussed. PMID- 3859839 TI - [Hypercalcemia in cancer]. PMID- 3859838 TI - Minichromosome assembly of non-integrated plasmid DNA transfected into mammalian cells. AB - The nucleoprotein structures formed on various plasmid expression vectors transfected into mammalian cells by both the calcium phosphate and DEAE-dextran methods have been studied. We demonstrate by a variety of means that mammalian cells are capable of rapidly assembling non-integrated circular plasmids (both replicating and non-replicating) into typical "minichromosomes" containing nucleosomes with a 190 bp repetitive spacing. Treatment of recipient cells with sodium butyrate for a short period of time (12-16 h) immediately following transfection markedly increased the DNase I digestion sensitivity of the newly assembled plasmid chromatin. Furthermore, minichromosomes isolated from such butyrate-treated cells are depleted in histone H1 and contain highly acetylated forms of histone H4. These findings are entirely consistent with our earlier speculation (Gorman et al., Nucleic Acids Res. 11, 1044; 1983) that appropriate butyrate treatment might stimulate transient expression of newly transfected genes by facilitating their assembly into an "active" type of chromatin structure. PMID- 3859840 TI - The changing role of endodontics and orthodontics in the management of traumatically intruded permanent incisors. PMID- 3859842 TI - Effect of premature loss of primary maxillary incisors on speech. PMID- 3859841 TI - Self-management versus parental involvement to increase children's compliance with home fluoride mouthrinsing. PMID- 3859843 TI - Evaluation of a one-appointment formocresol pulpectomy technique for primary molars. PMID- 3859844 TI - Solitary maxillary central incisor: clinical report. PMID- 3859845 TI - A very delayed developing premolar: clinical report. PMID- 3859846 TI - Childhood odontogenic myxoma: report of two cases. PMID- 3859847 TI - Primary molar shattered by a BB: clinical report. PMID- 3859848 TI - Composite restorations for primary molars: two-year results. PMID- 3859849 TI - Dental health beliefs and practices in a group of Thai villagers. PMID- 3859850 TI - [Dental anomalies as proof of population migration or the unity of the human race]. PMID- 3859851 TI - Dentistry in the developing countries (Africa)--a study. PMID- 3859852 TI - Problems encountered in evaluating the community dental service. PMID- 3859853 TI - Periodontal health of an isolated tribe in the Cameroons. PMID- 3859854 TI - [Origins, customs and social relations related to betel chewing]. PMID- 3859855 TI - [Does the antibacterial activity of chewing tobacco from Madagascar justify its use against dental caries?]. PMID- 3859856 TI - [Do we treat root canals properly?]. PMID- 3859857 TI - [Patefaction--a surgical treatment method for impacted teeth]. PMID- 3859858 TI - [Troublesome teeth in ambulatory care]. PMID- 3859859 TI - [Clinical experiences in the prevention of alveolitis after administration of Apernyl, Pharodoran and Traumacel D]. PMID- 3859860 TI - [Experiences in the ambulatory care of patients with malignant tumors of the maxillo-facial region in the Kolin district 1963-1983]. PMID- 3859861 TI - [Evaluation of the material Vivadent Keratit using SEM]. PMID- 3859862 TI - [The neoformation of the vestibule after thermal injuries to the lips at an early age]. PMID- 3859863 TI - [Sarcoidosis of the oral cavity]. PMID- 3859864 TI - [Coxsackie virus infections and clinical manifestations in the oral cavity]. PMID- 3859865 TI - Stabilization of higher-valent states of iron porphyrin by hydroxide and methoxide ligands: electrochemical generation of iron(IV)-oxo porphyrins. AB - An electrochemical study of hydroxide- and methoxide-ligated iron(III) tetraphenylporphyrins possessing ortho-phenyl substituents that block mu-oxo dimer formation has been carried out. Ligation by these strongly basic oxyanions promotes the formation of iron(IV)-oxo porphyrins upon one-electron oxidation. Further one-electron oxidation of the latter provides the iron(IV)-oxo porphyrin pi-cation radical. These results are discussed in terms of chemical model studies and the enzymatic intermediate compounds I and II of the peroxidases. PMID- 3859866 TI - Monoclonal antibodies to an interferon-induced Mr 68,000 protein and their use for the detection of double-stranded RNA-dependent protein kinase in human cells. AB - Extracts from interferon-treated human cells show an enhanced level of a double stranded RNA-dependent protein kinase activity that is manifested by the phosphorylation of an endogenous Mr 69,000-72,000 protein in its phosphate saturated state. By using a highly purified protein kinase fraction from interferon-treated human Daudi cells, we can now describe the preparation of murine monoclonal antibodies directed against this phosphoprotein, the Mr of which in its native state is found to be 68,000. These monoclonal antibodies (class IgG1) can identify the electrophoresed protein (p68) in polyacrylamide gels by the electrophoretic transfer blotting technique. Immunoprecipitates formed after incubation of extracts from interferon-treated human cells with the monoclonal antibodies can be conveniently recovered by protein A-Sepharose. Such immune complex preparations have associated protein kinase activity--i.e., addition of [gamma-32P]ATP results in the phosphorylation of p68 and added substrates, calf thymus histone, and eukaryotic initiation factor 2. Immune complex preparations from [35S]methionine-labeled extracts show the specific immunoprecipitation of p68. In addition, several other [35S]methionine-labeled proteins are bound unspecifically in these immune complexes prepared under similar experimental conditions as for the assay of protein kinase activity. These unspecifically bound proteins can be washed out by using a buffer containing detergents or high concentrations of KCl and magnesium acetate. Immune complex preparations washed similarly with these buffers still retain p68 but lose their capacity to phosphorylate p68 or exogenous substrates. These results indicate that p68 by itself has no protein kinase activity. The induction of [35S]methionine-labeled p68 in Daudi cells occurs with as little as 1 unit of human alpha interferon, with maximal synthesis between 6 to 9 hr after the addition of interferon. Actinomycin D blocks this induction. PMID- 3859867 TI - Isolation and characterization of two fractions from HeLa cells required for mRNA splicing in vitro. AB - A nuclear extract from HeLa cells has been separated by DEAE-cellulose chromatography into two fractions, both of which are required for mRNA splicing in vitro. Both fractions are heat labile and sensitive to N-ethylmaleimide. The activity of one of the fractions was abolished by preincubation with micrococcal nuclease, while the other fraction was unaffected by this treatment. This abolition indicates an essential nucleic acid component. Fractions I and II are required for the in vitro splicing of human beta-globin and adenovirus transcripts. PMID- 3859869 TI - Theoretical problems related to the attachment of microtubules to kinetochores. AB - A possible model is analyzed for the maintenance of attachment of a shortening microtubule (MT) to a kinetochore. In this model it is assumed that a MT is inserted and held in a sleeve or channel of the outer layer of a kinetochore while subunits are lost from the MT tip through the central layer of the kinetochore. A second problem considered is the elementary bioenergetics of MT growth and shortening, as associated with the presence or absence of a GTP cap on the MT ends. The free-energy source is the hydrolysis of GTP in solution. The third problem discussed is the kinetics of capture of a centrosomal MT by a target (e.g., a kinetochore). PMID- 3859868 TI - Identification of proliferin mRNA and protein in mouse placenta. AB - Proliferin is a recently described, prolactin-related protein whose mRNA appears in several murine cell lines during active growth. We have surveyed a number of mouse organs or tissues for the presence of mRNAs that hybridize to cloned proliferin cDNA. Of the tissues tested, only the placenta yielded proliferin related mRNA. This placental RNA is about 1 kilobase in length, increases sharply between days 8 and 10 of pregnancy, and then gradually declines through day 18. It is more abundant in RNA extracted from the fetal, compared to the maternal, part of the placenta. From a cDNA plasmid library prepared from poly(A)+ placental RNA, two types of proliferin-related clones were isolated, differing in intensity of hybridization to proliferin cDNA. By nucleotide sequence analysis, a strongly hybridizing clone was found to be nearly identical to the proliferin cDNA clone isolated from a library prepared from mRNA of a growing mouse fibroblastic cell line. Using an antiserum prepared against a synthetic proliferin fusion protein, we show that proliferin is secreted as a glycoprotein by minced placental tissue and that it differs from mouse placental lactogen. We conclude that proliferin is a placental hormone that is synthesized in certain mouse cell lines during active growth. Its function during pregnancy and during the growth of cultured cells is presently unknown. PMID- 3859870 TI - Induction of heat shock and stress proteins in promastigotes of three Leishmania species. AB - The induction of heat shock proteins in three species of Leishmania, L. tropica, L. enrietti, and L. donovani is reported. When cultures of promastigotes are shifted from 26 degrees C to 37 degrees C or 40 degrees C, the synthesis of proteins with apparent molecular weights of 88,000, 74,000, and 54,000 is stimulated. Actinomycin D added just prior to the shift prevented the appearance of these proteins but had no effect when present 30 min after the transfer onward, suggesting that the regulation of leishmanial heat shock proteins occurs at the transcriptional level. Exposure of L. tropica promastigotes to sodium arsenite elicits the synthesis of three major and four minor polypeptides. Their apparent molecular weights are, respectively, 94,000, 78,000, and 56,000 and 70,000, 45,000, 22,000, and 18,000. The response of Leishmania organisms to heat shock and to sodium arsenite is similar to that of other organisms, but some of the proteins identified as stress proteins in the parasite differ in size. The heat shock proteins might play a role in cytodifferentiation during the life cycle of the parasite and also in cellular adaptation to higher temperatures. PMID- 3859872 TI - Influence of dendritic cells on tumor growth. AB - Dendritic cells (DC) exposed to antigen are potent initiators of immune responses, and the numbers of DC and the dose of antigen control the level of response. The influence of these variables was tested on the growth of mouse sarcoma cells in vivo. When normal syngeneic DC (100,000) were given to mice with palpable tumors, tumor regression or delay in tumor growth was obtained. DC exposed to increasing doses of tumor extract in vitro before administration had progressively less effect. DC exposed to antigen delayed tumor growth significantly only when given on the same day as 500 tumor cells. The studies suggested that low doses of antigen on DC elicit immune responses and that high doses block them. The numbers of antigen-presenting cells and the dose of antigen modulate the degree of immunity to mouse sarcoma in vivo. PMID- 3859871 TI - Cell-cycle-specific genes differentially expressed in human leukemias. AB - Three cDNA clones isolated from Syrian hamster cells (p4F1, p2F1, and p2A9) contain sequences that are preferentially expressed in the G1 phase of the cell cycle. The expression of these sequences was investigated in human peripheral blood cells from normal individuals and from patients with leukemia. The expression of p4F1 and p2F1 is clearly dependent on the cell cycle in peripheral blood mononuclear cells stimulated to proliferate with phytohemagglutinin; the p2A9 sequences cannot be clearly detected in human lymphocytes but are expressed in a cell-cycle-dependent manner in human diploid fibroblasts (WI-38). These genes also show different levels of expression in lymphoid and myeloid leukemias. The highest level of expression for p2A9 is found in patients with chronic myelogenous leukemia, and the lowest in patients with chronic lymphocytic leukemia. For p2F1 and p4F1, the highest levels of expression are found in chronic and acute myelogenous leukemia. At least two other cell-cycle genes are not expressed at detectable levels in human leukemias. These findings suggest that the activation of cell-division-cycle genes might contribute, like cellular oncogenes, to the phenotype of human malignancies and that, perhaps, new oncogenes could be found by identifying and isolating genes whose expression is dependent on the cell cycle. PMID- 3859873 TI - Biochemical rationale and the cardiac response of patients with muscle disease to therapy with coenzyme Q10. AB - Cardiac disease is commonly associated with virtually every form of muscular dystrophy and myopathy. A double-blind and open crossover trial on the oral administration of coenzyme Q10 (CoQ10) to 12 patients with progressive muscular dystrophies and neurogenic atrophies was conducted. These diseases included the Duchenne, Becker, and limb-girdle dystrophies, myotonic dystrophy, Charcot-Marie Tooth disease, and Welander disease. The impaired cardiac function was noninvasively and extensively monitored by impedance cardiography. Solely by significant change or no change in stroke volume and cardiac output, all 8 patients on blind CoQ10 and all 4 on blind placebo were correctly assigned (P less than 0.003). After the limited 3-month trial, improved physical well-being was observed for 4/8 treated patients and for 0/4 placebo patients; of the latter, 3/4 improved on CoQ10; 2/8 patients resigned before crossover; 5/6 on CoQ10 in crossover maintained improved cardiac function; 1/6 crossed over from CoQ10 to placebo relapsed. The rationale of this trial was based on known mitochondrial myopathies, which involve respiratory enzymes, the known presence of CoQ10 in respiration, and prior clinical data on CoQ10 and dystrophy. These results indicate that the impaired myocardial function of such patients with muscular disease may have some association with impaired function of skeletal muscle, both of which may be improved by CoQ10 therapy. The cardiac improvement was definitely positive. The improvement in well-being was subjective, but probably real. Likely, CoQ10 does not alter genetic defects but can benefit the sequelae of mitochondrial impairment from such defects. CoQ10 is the only known substance that offers a safe and improved quality of life for such patients having muscle disease, and it is based on intrinsic bioenergetics. PMID- 3859874 TI - Anatomical correlates of the distribution of the pathological changes in the neocortex in Alzheimer disease. AB - The numbers and distribution of the neurofibrillary tangles and neuritic plaques have been determined in several areas of the neocortex in brains affected by various degrees of severity of Alzheimer disease. The homotypical cortex of the "association" areas of the temporal, parietal, and frontal lobes are severely involved, whereas the motor, somatic sensory, and primary visual areas are virtually unaffected. The neurofibrillary tangles are mainly in the supra- and infragranular layers, particularly in layers III and V. In all areas except area 18 in the occipital lobe, there are approximately twice as many tangles in layer V as in layer III. The tangles are arranged in definite clusters, and those in the supra- and infragranular layers are in register. The neuritic plaques occur in all layers but predominantly affect layers II and III and do not show clustering. These data on the severity of the pathological involvement in different areas of the neocortex and the laminar distribution and the clustering of the tangles support the suggestion that the pathological changes in Alzheimer disease affect regions that are interconnected by well-defined groups of connections and that the disease process may extend along the connecting fibers. The invariable and severe involvement of the olfactory areas of the brain in this disease is in striking contrast to the minimal changes in the somatic sensory and primary visual areas and raises the possibility that the olfactory pathway may be initially involved. PMID- 3859877 TI - Plasma 6-keto prostaglandin F1 alpha and thromboxane B2 in sick preterm neonates. AB - To determine if vascular abnormalities in preterm neonates might be related to vasoactive prostaglandins, stable prostacyclin (6-KPGF1 alpha) and thromboxane A2 (T X B2) metabolites in arterial blood were measured at less than or equal to 6 hours after birth and at 24, 48, and 72 hours using a radioimmunoassay. Neonates of less than 32 weeks gestation (N = 26) were diagnosed as having either the idiopathic respiratory distress syndrome (IRDS, N = 15) or pulmonary edema (PE, N = 11), and were also grouped according to the presence or absence of intracranial hemorrhage (ICH, N = 11) or patent ductus arteriosus (PDA, N = 10). Initial plasma 6-KPGF1 alpha was greater in neonates with ICH (0.23 +/- 0.04 ng/ml, mean +/- SE) than without ICH (0.11 +/- 0.04, p less than 0.05). Neonates with both ICH and IRDS (N = 8) had significantly elevated T X B2 at all sampling times compared to neonates with IRDS and no ICH (N = 7). Both T X B2 and 6-KPGF1 alpha increased with time in those with major ICH. Among neonates without ICH, 7 with IRDS had higher initial 6-KPGF1 alpha (0.19 +/- 0.07 ng/ml) and lower T X B2 (0.15 +/- 0.04 ng/ml) than 8 with PE (0.04 +/- 0.01 and 0.37 +/- 0.09 ng/ml, respectively). The initial 6-KPGF1 alpha (0.024 + 0.003 ng/ml), measured in neonates with PE and without PDA or ICH (N = 6), was significantly less than the corresponding value in the other neonates (0.201 +/- 0.036 ng/ml) (N = 20). PMID- 3859875 TI - Alpha and beta human transforming growth factors stimulate prostaglandin production and bone resorption in cultured mouse calvaria. AB - Human alpha and beta transforming growth factors (TGF-alpha and TGF-beta) stimulated the production of prostaglandin E2 (PGE2) and bone resorption in neonatal mouse calvaria in organ culture. Significant stimulation of bone resorption by TGF-alpha was observed with a concentration of 0.2 ng/ml (35 pM) and by TGF-beta with 0.2 ng/ml (8.0 pM). Enhanced production of PGE2 and bone resorption stimulated by either TGF-alpha or TGF-beta were both inhibited by indomethacin. We conclude that TGF-alpha and TGF-beta are potent and powerful stimulators of the resorption of mouse bone by a mechanism that involves the enhanced local production of PGE2. PMID- 3859876 TI - Evidence for active synapse formation or altered postsynaptic metabolism in visual cortex of rats reared in complex environments. AB - Animals placed in complex environments develop greater numbers of visual cortex synapses per neuron than animals housed in standard cages. Increased numbers of synapses could theoretically arise from (i) active formation of new synapses, or (ii) selective stabilization of constitutively produced synapses. The postsynaptic location of polyribosomal aggregates appears to be an indicator of newly forming synapses. In developmental synaptogenesis and adult reactive (to injury) synaptogenesis, polyribosomes are more frequently found at spine synapses and are more likely to appear in the spine head and stem. In the visual cortex of rats from complex environments, there was a greater frequency of spine synapses associated with polyribosomes, relative to rats from individual or group cages. Furthermore, a greater percentage of these spines had polyribosomes in the head and stem region. This suggests that synapses in this region may be actively induced by neural activity arising from the complex environment experience. PMID- 3859878 TI - Zinc and vascular reactivity in rat mesenteric vessels: possible altered dihomo gamma-linolenic acid metabolism in spontaneously hypertensive rats. AB - Zinc at a concentration of 0.4 microgram/ml potentiated pressor responses to norepinephrine in isolated perfused mesenteric vessels of SHR and WKY. At a higher concentration, 3.2 micrograms/ml, it inhibited responses to norepinephrine in WKY but produced no such inhibition in SHR. However, a transient potentiation was observed in SHR with the higher concentration. Pressor responses to potassium in WKY were not affected by zinc at either concentration. In SHR, however, the higher dose of zinc inhibited pressor responses to potassium. The low dose had no effect. Since effects of zinc may be mediated by release of DGLA, we suggest that in SHR DGLA release may be impaired. PMID- 3859879 TI - The 5HT2 antagonist pirenperone reverses disruption of FR-40 by hallucinogenic drugs. AB - Indolealkylamine and phenethylamine hallucinogens disrupted responding maintained under a fixed-ratio 40 (FR-40) schedule of reinforcement. LSD, DMT, mescaline and DOM produced dose-dependent decreases in number of reinforcers and increases in 10-sec periods of non-responding (pause-intervals). The 5HT agonist quipazine, as well as the LSD congener lisuride, altered response patterns in a similar manner. The effects of these drugs were examined after pretreatment with pirenperone, an antagonist with specificity toward the 5HT2 receptor with reference to the 5HT1 receptor. The dose-response curves for the phenethylamine hallucinogens were shifted significantly to the right and to a greater degree than were those for the indolealkylamine hallucinogens. Pirenperone also antagonized the effects of quipazine to a degree similar to that observed with the phenethylamine-type hallucinogens. Pirenperone did not significantly shift the dose-response pattern to lisuride. These data suggest that the behavioral disruption induced by these hallucinogens and quipazine relates at least in part to an effect on 5HT2 receptors, while the effects of lisuride do not involve a significant interaction at the 5HT2 receptor. PMID- 3859880 TI - Elevated plasma homovanillic acid in depressed females with melancholia and psychosis. AB - Plasma free homovanillic acid (HVA) and 3-methoxy-4-hydroxyphenylglycol (MHPG) were measured before drug treatment in 29 patients diagnosed as having major depression with melancholia and in 18 control subjects. Plasma HVA was significantly elevated in the total group of female melancholic patients when compared with female controls or male melancholics. Most female patients with psychotic melancholia had elevated HVA levels. These differences were not found in male patients. No significant differences were found for plasma MHPG. PMID- 3859881 TI - Does unilateral dopamine deficit contribute to depression? AB - A system of emotional control of behavior is believed to be lateralized to the right hemisphere. Given that dopaminergic pathways are involved in affective behavior, depression, which is recognized as an integral part of Parkinson's disease, may be associated with a dopamine imbalance. The present study examined this hypothesis in patients with unilateral symptomatology indicating either left hemisphere parkinsonism (LHP) or right hemisphere parkinsonism (RHP). Sixteen patients were tested on a battery of neuropsychological tests and several scales for evaluating mood. The two groups did not differ significantly on either cognitive or emotional measures. However, RHP patients rated themselves higher on the Present Scale of Cantril, and showed some neglect of the left visual field, as compared to LHP patients. PMID- 3859882 TI - Metabolic and endocrine indices of starvation in bulimia: a comparison with anorexia nervosa. AB - Fifteen patients with bulimia (DSM-III) and 22 patients with anorexia nervosa (10 "restricters" and 12 "vomiters") were compared with 24 age- and sex-matched healthy controls. Serial blood samples were collected between 8:30 and 9:30 a.m. with patients in supine and standing positions. Elevated blood values of beta hydroxybutyric acid and free fatty acids were observed in the majority of patients with bulimia and anorexia nervosa. These data indicate that many patients with bulimia showed the metabolic signs of starvation at the time of the study, a finding supported by the symptoms of endocrine adaptation to starvation, namely low triiodothyronine and a decreased noradrenaline response to an orthostatic test in many of these patients. PMID- 3859883 TI - Smooth pursuit eye tracking, neuropsychological test performance, and computed tomography in schizophrenia. AB - Smooth pursuit eye movements (SPEM) were measured in 18 patients who met Research Diagnostic Criteria for schizophrenia. Some degree of SPEM impairment was present in most patients. Deviant eye tracking was not related to ratings of severity of illness, but was related to recurrent episodes of hospitalization, antipsychotic medication, and lower ratings in anxiety and delusions. Worse SPEM tended to be associated with larger lateral ventricles as assessed on computed tomography. Three patients with reversed occipital asymmetry had more deviant eye tracking than the remaining patients. Eye movement impairment was related to worse performance in Finger Tapping and in the Trail-Making Test, and to fewer perceived alternations of a Necker cube, suggesting that frontoparietal disturbances are related to poor pursuit eye tracking in schizophrenia. PMID- 3859884 TI - Patterns of urinary excretion among patients with self-induced water intoxication and psychosis. AB - Parameters of water metabolism were measured serially in nine patients with the syndrome of self-induced water intoxication and psychosis (SIWIP). Clinical and laboratory findings indicated that SIWIP patients are type A of the syndrome of inappropriate antidiuresis. Estimated 24-hour urinary excretion of creatinine and early morning urinary creatinine concentration measurements were used to calculate 24-hour urine volumes. Polyuria was considered present for male patients when excretion was estimated to be greater than 2,600 ml of urine/24 hours or early morning urinary specific gravity was less than or equal to 1.003. Male patients with a specific gravity of less than or equal to 1.003 predictably excreted 28,000 ml of urine/day. Severe hyposthenuria may be a biological marker for a population at risk to develop complications of SIWIP, including seizures, coma, and death. PMID- 3859885 TI - Cortisol response to morphine and the DST. PMID- 3859887 TI - Periodontics 1985--reflections and projections. PMID- 3859886 TI - Amyloidotic polyneuropathy in a Jewish family. Evidence for the genetic heterogeneity of the lower limb familial amyloidotic neuropathies. AB - The first instance of familial amyloidotic polyneuropathy affecting a Jewish family is reported. Vitreous opacities were its presenting feature in the father at age 30 and the son at 25. Severe autonomic dysfunction and progressive peripheral neuropathy affecting initially the lower extremities soon followed. Death, suicidal in the son, occurred after seven and four years of illness. Their amyloid contained three proteins-an entire variant monomer of prealbumin, glycine replacing threonine as residue 49, and both products of its cleavage at the point of substitution. Lower limb familial amyloidotic polyneuropathy has been recorded in many families in Portugal, Sweden and Japan and occasionally in families of various ethnic stocks. This ethnic diversity prompts consideration of genetic heterogeneity. Differentiation on a genetic basis is forestalled since all pedigrees are compatible with autosomal dominant transmission and clinical data are marred by observer variance, even regarding vitreous opacities. Notwithstanding, an isolated British family is unique in the frequent occurrence of intractable peptic ulceration, cataracts, deafness and renal disease not attributable to amyloidosis and a striking predominance of males afflicted. Biochemically, monomeric prealbumin has been demonstrated by electrophoretic and immunologic techniques as the single protein constituent of amyloids isolated from Portuguese, Japanese and Swedish patients. The variant prealbumin of Japanese amyloid is characterised by methionine replacing valine as residue 30 and is identical to that found in plasma (but not as yet in amyloid) of affected Swedes. These limited data suggest that: (a) derivation of their amyloids from prealbumin is the biochemical common denominator of lower limb familial amyloidotic neuropathies regardless of the ethnic derivation of the afflicted; (b) to the extent that ethnic diversity reflects genetic heterogeneity, this will be demonstrable in the amyloid (and hopefully in the plasma) of the afflicted as entity-specific variant prealbumin monomers distinguished by different single amino acid substitutions; (c) on clinical and biochemical grounds, lower limb familial amyloidotic neuropathies include at least three genetic entities. In the upper limb and facial forms of familial amyloidotic polyneuropathy first recorded in Swiss and Finns respectively, the differences in their patterns of neurological disease and ocular lesions could be the result of their amyloids deriving from proteins other than prealbumin. PMID- 3859888 TI - A clinical trial of a new visible light-cured composite restorative-- initial findings and one-year results. PMID- 3859889 TI - Endodontic treatment of bifurcated mandibular premolars. PMID- 3859890 TI - Formation of prostaglandins by ovarian carcinomas. AB - Tissue contents of prostaglandins (PG) PGE2, PGE2a and 6-keto-PGF1a (degradation product of PGI2) were determined in specimens of advanced human ovarian cancer (n = 11). The PG levels (ng/mg tissue protein) varied widley: PGE2 17-515; PGF2a 2 43 and 6-keto-PGF1a 5-105. Tumors of patients without response to chemotherapy contained more PGE2, PGF2a and 6-keto-PGF1a than did tumors responding to chemotherapy. PG production was investigated in two ovarian carcinoma-derived cell lines. The ability of these cells to synthesize PG varied depending on the cell density. An increase of cell number was associated with a decrease of PG yield. PG formation was inhibited by indomethacin in a concentration-dependent manner. The present study suggests that ovarian carcinoma cells form PG in vivo and vitro. PMID- 3859891 TI - The effect of dietary alteration of prostaglandin synthesis on blood pressure and the reversal of hypertension in the one-kidney, one-clip rat. AB - This study examined the effect of diet-induced changes in prostaglandin synthesis on systolic blood pressure in one-kidney, one clip (1k, 1C) hypertensive rats and on the fall in blood pressure after unclipping. It tested the hypothesis that inhibition of prostaglandin synthesis exacerbates hypertension in this model and prevents complete reversal after unclipping. Rats with sustained hypertension within 8 weeks of renal artery clipping were fed synthetic diets supplemented to 20% of total energy with either safflower oil (linoleic acid) or a mixture of cod liver oil (90%) (containing eicosapentaenoic acid) and linseed oil (10%) (containing linolenic acid) for 4 weeks. The latter oil mixture resulted in a predictable reduction in kidney PGE2 and 6-keto PGF1 alpha (hydrolysis product of PGI2), aortic 6-keto PGF1 alpha and serum TXB2. However, at the end of 4 weeks dietary treatment there were no differences in systolic blood pressure between the two diet groups, and the blood pressure fall 24 hours after unclipping was similar. These findings therefore do not support a role for prostanoids in the maintenance or reversal of 1K, 1C hypertension. PMID- 3859892 TI - Age-, cycle- and topographic dependency of human myometrial prostaglandin (6-keto PGF1 alpha, PGF2 alpha)-synthesis in vitro. AB - Specimens of human myometrium (isthmus and fundus) freshly obtained at hysterectomy were immediately transferred in ice cold Tyrode solution and placed in superfusion chambers. Spontaneous contractions were recorded, the effluent of the myometrium was analyzed for PGF2 alpha and 6-keto-PGF1 alpha by use of specific radioimmunoassay systems. Dating of the menstrual cycle was achieved by histological evaluation of the endometrium. The PG release rates expressed as ng/min/g wet weight were correlated to the patients age and to the phase of the menstrual cycle. The production rates of 6-keto-PGF1 alpha were negatively correlated to the age of the patients and declined in fundus specimens from 2.89 +/- 0.35 ng/min/g wet weight in 39-42 years old patients to 0.52 +/- 0.17 ng/min/g wet weight in 48-52 years old women during the secretory phase (p less than 0.001). Similar significant correlations were found in specimens obtained from the isthmus uteri. During the proliferative phase fundus specimens produced on average 1.61 +/- 0.67 ng/min/g wet weight in 39-42 years old patients and 0.49 +/- 0.12 ng/min/g wet weight 6-keto-PGF1 alpha in 48-52 years old women respectively (p les than 0.001). The PGF2 alpha synthesis in myometrial specimens of fundus or isthmus origin was significantly lower than 6-keto-PGF1 alpha and did not correlate to the age of the patients during the proliferative phase. However, PGF2 alpha release rates during the secretory phase were significantly (p less than 0.001) higher in younger women. These results suggest an age-, cycle and topographic dependency of PGI2 synthesis in human myometrial tissue. PMID- 3859893 TI - Estradiol -17-beta enhances the formation of (3H)-PGF2 alpha from (3H)-PGE2 in the uterus isolated from ovariectomized rats. AB - Formation of (3H)-PGF2 alpha and (3H)-13, 14,dihydro-15-keto-PGF2 alpha from (3H) PGE2 by the supernatant of uterine homogenates from estrous and ovariectomized rats, was studied, using the reaction system PGE2 + NADPH + (3H)-PGE2 + supernatant. Enzymatic conversion was lower in uterine supernatants from spayed rats than in uterine homogenates of rats at natural estrus. Spayed animals were injected with progesterone (P) or with estradiol-17-beta (Eo) at a dose of 1.0 or 50.0 micrograms. Conversion of (3H)-PGF2 alpha to (3H)-PGE2 or to (3H)-13, 14,dihydro-15-keto-PGF2 alpha did not differ in control ovariectomized or ovariectomized rats receiving P or 1.0 micrograms Eo. However, 50.0 micrograms Eo induced a significant conversion after 30 (P less than 0.01) and 60 (P less than 0.001) min of incubation. It is concluded that Eo, at the 50.0 micrograms dose, but not the 1.0 microgram dose of Eo, nor progesterone, stimulated conversion of (3H)-PGE2 into (3H)-PGF2 alpha or (3H)-13, 14,dihydro-15-keto-PGF2 alpha, presumably through the activity of the enzyme PGE2-9-keto-reductase. PMID- 3859894 TI - Prostaglandins or prostaglandin like substances are implicated in normal growth and development in oomycetes. AB - The prostaglandin synthesis inhibitors aspirin and indomethacin inhibit the growth of Achlya caroliniana, A. ambisexualis and Saprolegnia parasitica in a dose-related manner. In addition, the inhibitors cause the formation of a characteristic asterisk-shaped colony. This abnormal colony morphology does not appear to be dependent on medium composition, since three different nitrogen and five differentcarbon sources all support the abnormal growth in the presence of 0.1 mM indomethacin. The abnormal colony morphology is the result of abnormal branching. Inhibitor grown colonies are more densely branched than controls, with shorter distances between branches. Inhibited colonies allowed to grow for greater than ten days escape the inhibition and assume a normal gross colony morphology and size, however, they do not reproduce sexually. The addition of 2 micrograms/ml PGF1 alpha to the growth medium partially overcomes the growth inhibition caused by indomethacin. The data suggest a role for prostaglandin or prostaglandin-like compounds in oomycete development. PMID- 3859895 TI - Abstracts of the Second International Symposium on 'Vasoactive Intestinal Peptide (VIP) and Related Peptides'. Cap d'Agde, Herault, France, June 18-22, 1985. PMID- 3859896 TI - [Determination of radioactive impurities in radiopharmaceuticals containing cyclotron-produced radioisotopes]. PMID- 3859897 TI - [Toothbrushes and the mechanical control of plaque]. PMID- 3859898 TI - [Hepatic aspergillosis as a complication of acute leukemia]. PMID- 3859899 TI - Histamine log(dose)-response curves in asthmatics. A comparison between the Wiesbadener Doppelinhalator and the De Vilbiss Model 645 nebulizer. AB - In 9 asthmatic patients log(dose)-response curves were obtained on 4 successive days with the Wiesbadener Doppelinhalator (WDI) and the De Vilbiss (De V) 645 nebulizer, respectively. log(dose)-response was expressed as a quadratic regression equation. From those equations the dose, causing a fall in response (FEV1) of 10% of the initial value, was obtained and defined as the provocative concentration (PC(10] or sensitivity. Moreover, the reactivity was defined as the slope of the linear regression through the steeper part of the curve. Although we compared the De V and the WDI log(dose)-response curves after correction for the different liquid output, a significantly greater sensitivity was found for the De V nebulizer. As to the reactivity, no significant differences were found. The difference in sensitivity could perhaps be explained by the fact that, as compared with the De V nebulizer, the WDI may cause a larger deposition of aerosol on the throat and the pharynx, due to the much greater linear velocity of its aerosol jet. PMID- 3859901 TI - [Respirators in intensive care]. PMID- 3859900 TI - [Care of ventilator patients. Monitoring and maintenance of artificial respirators]. PMID- 3859902 TI - Thyrotoxic periodic paralysis: case discussion and review. PMID- 3859903 TI - Tay-Sachs disease: knowledge and attitudes of the rabbinical community. PMID- 3859904 TI - Rhode Island health risk appraisal program in worldwide use. PMID- 3859905 TI - [Computerized tomography in the evaluation of neurologic complications of preventive therapy of acute lymphatic leukemia]. AB - The authors examined by means of computed tomography 12 patients with ALL treated with radiotherapy combined with cytostatic chemotherapy and presenting clinical signs of CNS damage. The CT scan findings are correlated with clinical signs, mainly distinguishing between symptoms of either diffuse or focal damage. An attempt is made in order to evaluate the possible role of Methotrexate and X-Ray therapy in the pathogenesis of the CNS lesions. PMID- 3859906 TI - Why did that ventilator alarm go off? PMID- 3859907 TI - [Malignant bone tumors of the hip. Anatomo-radiological correlation]. AB - The anatomo-radiological study was conducted in 6 cases of isolated malignant intra-osseous tumours of the hip: 1 osteogenic sarcoma of the femoral head, 1 supra-acetabular chondrosarcoma, 3 carcinomatous metastases of the femoral head (2 predominantly lytic and 1 osteosclerotic), 1 supra-acetabular carcinomatous metastasis. This study reveals why, in the early stages of the disease and depending on the experience of the observer, the radiological appearance of these lesions can be easily confused with those of various conditions frequently seen by the rheumatologist. The authors also discuss the interactions of the metastases with the biomechanical conditions of the affected bone. PMID- 3859908 TI - Intragastric bacterial overgrowth--a possible risk in the long-term treatment of peptic ulcer disease. Round table conference, XIIth International Congress of Gastroenterology, Lisbon, 21 September, 1984. PMID- 3859909 TI - Normal and pathological microbial flora of the upper gastrointestinal tract. AB - The resting gastric juice of normal adults in north-western Europe usually contains less than 10(3) micro-organisms/ml. Gastric sterility in such individuals is based on acidity. During meals or after an H2-receptor antagonist, gastric pH levels favour microbial growth but gastric emptying and recurrence of acid conditions resterilizes the stomach. If gastric pH remains above 4, colonization takes place. Studies suggest that gastric pH is normally high, with resultant bacterial colonization, in most of Asia, Africa, south and central America and, possibly, southern and eastern Europe. The biochemical activity of the gastric flora is also pH-dependent. Mucosal colonization occurs only if gastric pH is high. The small intestine is normally sterile because bacteria are killed by bile or pancreatic enzymes. Overgrowth can occur if there are areas inaccessible to these and may have severe metabolic consequences. PMID- 3859910 TI - The risk of gastric dysplasia in medical long-term treatment of peptic ulcer disease. AB - There have been recent findings of gastric cancer in patients treated with cimetidine but too soon after treatment for that drug to have had a pathogenetic role. Ranitidine has been shown to induce slight changes in the gastric mucosa. In 117 patients with gastric ulcer followed-up in some cases for 24 months, five cases of cancer were detected, one after more than a year of follow-up. The numbers were too small to allow any conclusion to be drawn regarding relationships with medication. No significant differences in incidence of gastric epithelial dysplasia between control patients and patients treated with cimetidine or ranitidine were found. No dysplastic lesions were seen during a brief follow-up of 19 duodenal ulcer patients and a few gastric ulcer patients treated with pirenzepine but the data is too limited to allow conclusions to be drawn. PMID- 3859911 TI - Drugs, hormones, integrity and structure of the small bowel and pancreas. Proceedings of an international workshop. Bern, Switzerland, 24 October 1984. PMID- 3859912 TI - Alcohol and the integrity of the pancreas. AB - Alcohol may affect the integrity of the pancreatic parenchyma, as seen in alcoholic pancreatitis, some cases of chronic alcoholism without clinical pancreatitis, and experimental studies. The composition of pancreatic juice may reflect some of these changes. One type of parenchymal alteration is the loss of differentiative features of acinar cells, so that they take on the characteristics of ductular cells. Concomitant fibrosis completes the formation of the tubular complexes found in association with alcoholic chronic pancreatitis. Sustained alcohol intake may produce the accumulation of lipid droplets in parenchymal cells, some of which may be shown to be within the rough endoplasmic reticulum of acinar cells. Epithelial cells may undergo mucous metaplasia. The epithelial-basal lamina barrier frequently is breached in the area of intraluminal aggregates, with or without obvious inflammation in the immediate area. Loss of barrier function may lead to interaction among components of the external compartment (lumen) and the internal compartment (stroma). Increased levels of blood proteins and glycosaminoglycans in the juice, enzyme activation, fibrin formation, and complement activation are potential consequences of barrier loss. Increased lactoferrin levels could result in part from the activity and degranulation of polymorphonuclear leukocytes. PMID- 3859913 TI - Circadian changes of the rat pancreas acinar cell. A quantitative morphological investigation. AB - The dynamics of the physiologic secretory cycle of the rat pancreatic acinar cells along a 24-h span with an alternating 12 : 12 light to dark cycle have been quantitated by morphometric methods. Significant circadian changes could be detected in cell volume and the volumes and surface areas of secretory granules and several organelles involved in the secretory process. During the dark period, which is the activity and feeding period, there is a decrease in the size of cells and individual zymogen granules as well as in the amount of secretory material. This is paralleled by a drop in the number of ribosomes and Golgi vesicles (after a transient increase) and a loss of cytoplasmic membranes. Most of the cell's zymogen content is refilled during the first hours of the light period, when cellular autophagy reaches maximal values. PMID- 3859914 TI - Structural and biochemical characterization of maximal and supramaximal hormonal stimulation of rat exocrine pancreas. AB - To study the regulation of the successive steps along the secretory pathway in the rat exocrine pancreas the model of in vivo infusion of synthetic caerulein in conscious rats for periods up to 72 h was combined with electron microscopy and in vitro analysis of protein synthesis, intracellular protein transport and enzyme discharge using isolated pancreatic lobules. Prolonged and maximal hormonal stimulation was obtained with 0.25 microgram kg-1 h-1 caerulein and resulted in a 80-90% depletion of enzyme stores within 1 to 3 h, followed by coordinate and anticoordinate changes in individual rates of (pro-)enzyme synthesis after a lag period of 3 h. One group (two amylases) revealed a decrease in synthesis to levels about 10-fold lower than controls. A third group of proteins (one trypsinogen, lipase, proelastase) did not show changes in synthesis with hormone stimulation. The sum of such alterations led to an increase in total rate of synthesis after 6 h, which was combined with acceleration of intracellular transport, packaging, and granule discharge, thus enabling a sustained rate of secretion over the period of stimulation. In contrast, infusion of a supramaximal dose of caerulein (5.0 micrograms kg-1 h-1) induced acute edematous pancreatitis and led to an almost complete reduction of volume and protein output from the cannulated main pancreatic duct. Using freeze-fracture techniques and thin-section electron microscopy, earliest structural alterations were observed at membranes of zymogen granules and the plasma membrane. Fusion of zymogen granules among each other led to formation of large membrane-bound vacuoles within the cytoplasm. These and individual zymogen granules fused with the lateral instead of the apical plasma membrane, discharging their content into the interstitial space. Vacuole formation was associated with activation of lysosomes and with cytoplasmic destruction of acinar cells. The findings indicated severe changes in the specificity of the intracellular membrane fusion process induced by supramaximal doses of caerulein, which finally resulted in autodigestion of the pancreas. PMID- 3859915 TI - Glucagon and small-bowel mucosa. AB - Numerous functional and structural effects of pharmacological dosages of glucagon on the small-intestinal mucosa have been demonstrated. In addition, clinical conditions associated with elevated concentrations of plasma glucagon may go along with alterations of the intestinal mucosa. The physiological and pathophysiological relevance of these findings, however, is questionable in view of the heterogeneity of the findings, of the complexity of the experimental systems used and of the methodological problems involved. With respect to possible trophic effects on the small-bowel mucosa enteroglucagon is of special importance. Numerous diseases in which increased intestinal mucosal growth has been shown are associated with elevated plasma concentrations of enteroglucagon. Our results concerning radiation damage, the time course of plasma enteroglucagon levels during antimitotic treatment, the small intestinal resection and the experimental blind loop syndrome are discussed. An outlook will be given as to the use of monoclonal antibodies in the development of glucagon as well as enteroglucagon deficiency states for the study of the physiological relevance of these two regulatory peptides. PMID- 3859916 TI - Gastrin modulation of pancreatic growth. AB - Gastrin has been proposed as a trophic factor for the pancreas. Extensive small bowel resection increased transiently plasma gastrin levels in the rat and produced pancreatic growth. This growth was characterized by an increased pancreatic weight, protein and DNA content, and the occurrence of mitotic figures in acinar cells. In order to determine if gastrin is implicated in pancreatic hyperplasia, we induced endogenous variations of gastrin 3 weeks before small bowel resection or transection. Hypogastrinemia was produced by antrectomy and hypergastrinemia by vagotomy plus pyloroplasty. Pyloroplasty alone was without any effect. All gastric operations alone enhanced though not significantly the weight of the pancreas and its content in protein and DNA. When performed before intestinal resection, they did not modify the hyperplastic response of the pancreas to the resection. Our findings do not support the views that antral gastrin exerts a trophic action on the rat pancreas and that gastrin is implicated in postresectional hyperplasia of the gland. PMID- 3859918 TI - Abstracts of papers presented at the Eighteenth Scandinavian Conference on Gastroenterology and the Ninth Scandinavian Meeting on Gastrointestinal Endoscopy. Linkoping, Sweden, 30 May-1 June 1985. PMID- 3859917 TI - Pancreatic duct and microvascular permeability to macromolecules. The relation to acute pancreatitis. AB - In a model of acute pancreatitis which requires that pancreatic enzymes leak from a permeable duct, we studied the role of intravenous enterokinase (195,000 daltons) in pancreatic enzyme activation. Anesthetized cats were given intravenous 16,16-dimethyl prostaglandin E2 to increase pancreatic blood flow and microvascular permeability. In some animals the permeability of the pancreatic duct was increased by perfusion of the duct with glycodeoxycholic acid (7.5 mM). Endogenous enzyme secretion was stimulated by IV CCK and secretin. Some cats also received enterokinase intravenously. Those animals that received PGE2, glycodeoxycholate, and enterokinase all developed pancreatitis. When any of these agents were not given the pancreases appeared normal. These findings were consistent with the hypothesis that intravenous enterokinase leaked from small pancreatic blood vessels into the pancreatic parenchyma and/or ducts where activation of pancreatic enzymes occurred. The development of pancreatitis appeared to require an increase in both microvascular and ductal permeability. PMID- 3859919 TI - Quantitative evaluation of monocyte differentiation by electron microscopy: impairment of differentiation ability in monocytes from children with acute lymphoblastic leukaemia. AB - The differentiation of monocytes was evaluated quantitatively by electron microscopy and was analyzed in relation to the clinical features of childhood acute lymphoblastic leukaemia (ALL). The monocyte cellular size increased and cell organellae became mature after a 72-h culture. Phagolysosome formation developed markedly- and the nucleus became circular--accompanied by chromatin deconcentration. The differentiation degree of the cell organellae was indexed and classified as mature by electron microscopy. The indexes of nuclear shape, chromatin deconcentration, cytoplasmonuclear ratio and vacuole formation increased with time. The total index increased linearly with time dependence. These results indicate that the ultrastructural parameters and indexes allowed a quantitative assessment of cell organellae and cellular differentiation of the monocyte. At the acute phase of ALL, the degrees of cell organnellae and cellular differentiation were significantly lower than the control. The above findings suggest that monocytes from children with ALL have impaired differentiation ability, which results in defective function of macrophages. PMID- 3859920 TI - Nontraumatic metastatic clostridial myonecrosis in a patient with preleukemia. PMID- 3859921 TI - The spectrum of therapeutic endoscopy. PMID- 3859922 TI - How safe are engineered organisms? PMID- 3859923 TI - Comparative analysis of treatment programs for childhood acute lymphoblastic leukemia. PMID- 3859924 TI - Epidemiology of acute lymphoblastic leukemia. AB - Although the etiology of acute leukemia is largely unknown, some facets of the puzzle are becoming clarified. Recognition of important patterns in age-specific mortality rates has suggested that events early in life, perhaps even prenatally, may have an influence on developing leukemia in childhood. The racial differences evident in mortality, incidence, and immunologic subtype of ALL suggest either differences in exposures to certain "factors" or differences in responses to those "factors" by white children. Hereditary factors appear to play a role. Familial and hereditary conditions exist that have high incidences of acute leukemia. Chromosomal anomalies are common in these conditions. Viral infections may play a role by contributing to alteration in genetic material through incorporation of the viral genome. How that virus is dealt with after primary infection seems important. The presence of immunodeficiency may allow wider dissemination or enhanced replication of such viruses, thereby increasing the likelihood of cellular transformation to an abnormal cell. Proliferation of that malignant cell to a clone may depend on other cofactors. Perhaps prolonged exposure to substances like benzene or alkylating agents may enhance these interactions between virus and genetic material. Does this change DNA repair mechanisms? Are viral infections handled differently? Is viral genomic information more easily integrated into host cells? Ionizing radiation has multiple effects. Alteration in genetic material occurs both at the molecular and chromosomal levels. DNA may be altered, lost, or added in the cell's attempt to recover from the injury. These changes may lead to altered susceptibility to other environmental agents, and host response may be altered. The past 40 years have seen dramatic progress in the treatment of ALL. We have just begun to unravel the complex interactions of genetic makeup, immune response, and the environment on the development of ALL. Whether factors can be identified that may allow prevention of acute leukemia remains to be seen. PMID- 3859925 TI - Pharmacokinetics and cellular determinants of response to 1-beta arabinofuranosylcytosine (ara-C). PMID- 3859926 TI - Intensive timed chemotherapy for 51 acute myeloid leukemia patients with poor prognosis. PMID- 3859927 TI - High-dose cytosine arabinoside in the initial treatment of acute leukemia. PMID- 3859928 TI - Modulation of cytosine arabinoside (ara-C) and high-dose ara-C in acute leukemia. PMID- 3859929 TI - High-dose cytosine arabinoside in the treatment of resistant acute leukemia. PMID- 3859930 TI - Sequential high-dose cytosine arabinoside and L-asparaginase in childhood leukemia in relapse. PMID- 3859931 TI - High-dose cytosine arabinoside in the treatment of childhood malignancies. PMID- 3859932 TI - In vivo studies on high-dose 1-beta-D-arabinofuranosylcytosine (HDara-C) and 1 beta-D-arabinofuranosyluracil (ara-U) with respect to pharmacokinetics, cell kinetics, and cytotoxicity in a rat myelocytic leukemia model (BNML). AB - From the current studies it can be concluded that comparing the ara-C catabolism to ara-U in leukemic rats and leukemic patients, this process is about 100 times more pronounced in human leukemic cells. The low deaminase activity in leukemic rats probably explains the slow plasma ara-C disappearance curve in the BNML. No cytotoxic effect of ara-U with respect to LCFU-S reduction could be observed, nor did ara-U enhance the cytotoxic effect ara-C in the BNML. These studies have increased the understanding of the relation between ara-C, ara-U plasma levels and deaminase activity. PMID- 3859933 TI - Increased tumor growth and drug uptake predicts for response to continuous infusion high-dose cytarabine. PMID- 3859934 TI - Drug association including ara-C in myeloid leukemia cell differentiation: in vitro studies. PMID- 3859935 TI - Evolution of clinical studies with high-dose cytosine arabinoside at the M.D. Anderson Hospital. PMID- 3859936 TI - [Effect of the hypothalamic nuclei on adrenal response to stress in rats: effect of heat lesions on the supraoptic, periventricular, paraventricular and arcuate nuclei]. PMID- 3859937 TI - [Behavioral survey of toothbrushing in 2-year-old children]. PMID- 3859938 TI - A comparison of two resuscitators in the management of birth asphyxia. AB - Twenty newborn infants with birth asphyxia were alternately assigned to ventilation with either the Samson or the Laerdal infant resuscitator. During resuscitation significantly greater percentage changes in pH (1,1% v. 0,2%; P less than 0,05), hydrogen ion concentration (-15,6% v. -2,1%; P less than 0,05) and partial arterial carbon dioxide pressure (-24,5% v. -11,9%; P less than 0,02) were seen in the Laerdal group. There was also a tendency towards improved oxygenation and lung compliance and quicker establishment of spontaneous respiration in the Laerdal group. We therefore conclude that the Laerdal resuscitator is superior to the Samson one in the management of infants with birth asphyxia. PMID- 3859939 TI - Transcutaneous oxygen and carbon dioxide monitoring in patients undergoing surgical removal of wisdom teeth. PMID- 3859940 TI - [A new monoclonal antibody produced against a human leukemia which recognizes class II HLA antigens]. PMID- 3859941 TI - Diagnosis and surgical treatment of internal derangement of the temporomandibular joint. PMID- 3859942 TI - A clinical evaluation of the ability of the Dentobuff method to estimate buffer capacity of saliva. AB - The power of a colourimetric method to estimate buffer capacity of saliva (Dentobuff) was compared with an electrometric method in 220 adults. The methods correlated well but Dentobuff frequently underestimated high buffer values which was considered to be of minor practical importance. Dentobuff identified groups with low, intermediate and high buffer capacity as good as the electrometric method. PMID- 3859943 TI - Effect of methylprednisolone on complications after removal of impacted mandibular third molars. AB - Bilateral impacted mandibular third molars were surgically removed in 20 healthy patients. The effects of methylprednisolone on postoperative healing was investigated in a double-blind, cross-over study. Some decrease in postoperative discomfort (swelling and trismus) was noted in the methylprednisolone group. No statistically significant difference was noted, however in comparison with a placebo group. PMID- 3859944 TI - Laser-induced fluorescence from sound and carious tooth substance: spectroscopic studies. AB - Fluorescence spectra of dentine and enamel illuminated with laser light of wavelengths of 337, 488, 515 and 633 nm respectively were recorded. The fluorescence obtained by illumination with UV laser light at 337 nm had a peak at about 400 nm in dentine as well as enamel. Compared to intact enamel the fluorescence from enamel with initial carious lesions was of lower intensity and had a slight red shift. No fluorescence within the visible range was obtained by illumination with a low power He-Ne laser at 633 nm. Illumination at 488 nm produced fluorescence with a peak at about 540 nm in dentine as well as enamel. The difference in the intensity of fluorescence between sound and carious enamel was generally greater at this wavelength than at any of the others tried, and the red shift from the carious enamel was also more pronounced. Illumination at 515 nm produced fluorescence of similar wavelengths but with much less difference between intact and carious enamel. It was concluded that illumination at 488 nm was the most suitable wavelength of those investigated for the detection of initial carious lesions by the fluorescence technique. PMID- 3859945 TI - Palatinose--a sucrose substitute. Pilot studies. AB - Pilot studies on isomaltulose, (Palatinose), a sucrose substitute, including acid production in plaques, acid production in suspensions of dental plaque material or of Streptococcus mutans were performed, as well as studies on the effect of isomaltulose on glucan synthesis, by Strep. mutans. Also an experimental caries study in the rat was carried out in a few animals. The results indicated that isomaltulose is only slowly fermented in the oral cavity and that glucan formation from isomaltulose, if any, is very small. Sulcal caries only was found in rats challenged with isomaltulose. Since the animals developed very well on the isomaltulose diet and did not have stomach disorders, isomaltulose is considered to be of great interest as a sucrose-like, low-cariogenic and nontoxic sucrose substitute. PMID- 3859946 TI - Case history a la mood. PMID- 3859947 TI - The HLA-DR antigen frequency in Northern Ireland compared to the frequency in Bristol, Edinburgh and Eire. PMID- 3859948 TI - [Radiographic diagnosis X. Poorly-differentiated odontoma]. PMID- 3859949 TI - [HLA and acute pericarditis]. PMID- 3859950 TI - [Value of determining casein kinase activity in the diagnosis of cancer of the large intestine]. PMID- 3859951 TI - [Genetic markers of blood in dental caries]. PMID- 3859952 TI - [Adaptation of children with lymphoblastic leukemia to the basic environment after completed treatment]. PMID- 3859953 TI - [Cervix ripening and labor induction in therapeutic abortion in the middle and late 2d trimester using intracervical and extra-amniotic prostaglandin gel administration]. AB - In 64 patients for therapeutic abortion between the 17th to 26th week of pregnancy abortion was induced with a standardized two-step procedure. After priming of the cervix with intracervical application of prostaglandin gel, labour was induced with extraamniotic PG-administration under epidural anaesthesia. The priming effect was demonstrated objectively in 10 patients with a mechanical tonometer. Prostaglandin F2 alpha, PGE2 and sulprostone were used in the study. There were no significant differences in the total length of therapy (cervix priming time plus induction of labour to abortion interval) between the three groups of patients. Except for 4 patients who required an instrumental extraction of the fetus, abortion occurred in all the patients within a total time of 30 hours (93.8%). The mean induction of labour to abortion interval was 8.3 hours (range: 1.0 to 17.3 hours) in all patients and there was, again, no significant difference between the three groups. Epidural anaesthesia gave a painless induction of abortion in 60 out of 62 patients, while 2 patients required additional analgesics. In 2 patients epidural anaesthesia was contraindicated. In contrast to the systemic administration of PG the incidence of gastrointestinal side effects was low (10.9%). In one case a cervical lesion was observed due to a tenaculum laceration. Although there was no general antibiotic prophylaxis endometritis occurred in only 3 cases (4.7%). The combination of intracervical PG gel for cervical priming, extraamniotic PG gel for labour induction and epidural anaesthesia presents a gentle and efficient method for the termination of pregnancy in the middle to late second trimester. PMID- 3859954 TI - [Resorption of prostaglandin E2 following various methods of local administration for ripening of the cervix and end the induction of labor]. AB - PGEM concentration was determined radioimmunologically in a non-pregnant woman in whom PGE2 was infused intravenously at increasing dosage and in women in whom labour was induced by various methods for local application of PGE2. There was excellent correlation between the amount of PGE2 infused intravenously and the levels of PGEM determined in the peripheral plasma. The following methods of local application of PGE2 were included in the study: 0.4 mg PGE2 gel placed retroamnially by means of a balloon catheter; 0.4 and 0.5 mg PGE2 gel applied endocervically; 1.5 mg PGE2 given pericervically through a portio adapter and 3 mg PGE2 placed intravaginally in form of a single vaginal tablet; also included was a control group where only vaginal examination was performed. Blood was withdrawn before, and then 30 minutes, 1, 2 and 3 hours after PGE2 administration. Mean levels of PGEM in the maternal peripheral plasma showed no change within or between the various groups, with the exception of one patient in the portio adapter group where hyperstimulation occurred. After removal of the adapter PGEM levels dropped to baseline values. It is concluded from the present study that local application of doses currently used to soften the cervix and/or induce labour at term does not give rise to PGEM concentrations in the maternal blood of the same magnitude as achieved by intravenous PGE2 administration. PMID- 3859955 TI - [Oxalic acid metabolism in chronic renal failure]. AB - The mean plasma oxalic acid level is increased in renal failure. The mean plasma oxalic acid level was 74.8 +/- 18.5 mumol/l in 15 patients with chronic renal failure and 129.9 +/- 47.7 mumol/l in 31 patients on chronic haemodialysis which are several times higher than the normal range (16.8 +/- 6.0 mumol/l). During haemodialysis oxalic acid showed a behaviour similar to that of creatinine. The increased plasma oxalic acid levels are due to the accumulation of oxalic acid in renal insufficiency and additional metabolic factors increasing endogenous synthesis of oxalic acid. The administration of pyridoxine caused a decrease of the mean plasma oxalic acid level by 46% (32.0 to 56.1%) in 6 out of 8 chronic haemodialysis patients. This occurred most probably by correcting a vitamin B6 deficiency. Investigations of the intraerythrocyte glutamic oxalacetic transaminases showed, that the action of pyridoxine therapy on the endogenous oxalic acid synthesis can be explained by an increase of available pyridoxal-5 phosphate, the active metabolite of vitamin B6. The administration of vitamin B1, however, caused no statistically significant decrease of the plasma oxalic acid levels. Other influences on plasma oxalic acid synthesis result from the diminished excretion of the precursors of oxalic acid glycolic acid and ascorbic acid. The conversion of glycolic acid to glycine is probably increased in uraemia. The administration of 1 g ascorbic acid after each haemodialysis caused a striking increase of the plasma oxalic acid levels up to 240% of the initial value within 2 weeks, as a consequence of an increased metabolism of accumulated ascorbic acid. Increased plasma oxalic acid levels seem to be an important factor for calcium oxalate deposits in uraemia.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3859956 TI - [Treatment of medium-severe essential hypertension with beta-Aldopur under practice conditions]. AB - 23 hypertensive patients were treated with the new fixed-dose combination drug Beta-Aldopur, containing 100 mg bupranolol and 50 mg spironolactone per tablet. In part they had been pretreated with other fixed combinations without sufficient success. 19 patients completed the eight-week study. Initial dosage of two tablets could be reduced to one tablet daily following normalization (less than 90 mm Hg) of diastolic blood pressure in one third of patients. Mean pressure in a sitting posture was lowered from 176 +/- 21/111 +/- 9 mm Hg to 156 +/- 21/93 +/ 8 mm Hg (p less than 0,0001) gradually until the 4th week. Body weight decreased by 2.5 kg (3.1%) until the 6th week and remained constant thereafter. Mean concentration of serum potassium rose significantly by 0.42 mmol/l within normal limits. Specific and non-specific side effects were very rare and no serious reactions occurred. Compared to pretreatment with other fixed combinations, most of them containing thiazides, the combination of bupranolol with spironolactone was more efficacious in lowering the blood pressure. According to the results of our study Beta-Aldopur is suitable for treatment of essential hypertension of all degrees, especially for patients prone to hypokalemia, if secondary aldosteronism caused by hypertension or by medication may be expected and/or if other medications are not adequately effective. PMID- 3859957 TI - [Epidemiological studies of hematotoxic and hepatotoxic effects of benzene and benzene-containing solvent mixtures]. PMID- 3859958 TI - [Prostaglandin studies in normal subjects and in post-myocardial infarct patients]. PMID- 3859959 TI - [Effect of obstetrical manipulations on the prostaglandin content of the uterus]. AB - It is reported about the concentration of PG F2 alpha, PG E2, TxB2 and 6-keto-PG F1 alpha in amniotic fluid after obstetrical manipulations without rupture of amniotic membranes. Only digital distension of the cervix was followed by a rise of PG F2 alpha values. On the other side there was no increase in PG concentration after application of a transabdominal catheter or after amniotomy. PMID- 3859960 TI - Significant surgical pathophysiological problems in the severely traumatized patient. Second Tore Nilson Symposium. PMID- 3859962 TI - The problem of trauma. PMID- 3859961 TI - The metabolic problems of the burn patient. PMID- 3859963 TI - Immunity, nutrition and trauma: an overview. PMID- 3859964 TI - Intracellular energy substrates in trauma. PMID- 3859965 TI - The proenzyme functional inhibition index. A new parameter for evaluation of the severely injured and septic patient. PMID- 3859966 TI - Pathophysiology of trauma. PMID- 3859968 TI - Significant surgical pathophysiological problems in the severely traumatized patient. Future aspects. PMID- 3859967 TI - A new experimental model for studies on the respiratory distress syndrome after standardized trauma. PMID- 3859969 TI - Modern trends in the management of the climacteric. PMID- 3859970 TI - Mental health in the climacteric. The longitudinal study of women in Gothenburg. AB - A representative sample of 899 middle-aged urban Swedish women underwent a psychiatric interview on two occasions with 6 years between studies (waves). The point prevalence of all mental disorders was 39.9% at the first wave and 39.0% at the second. The corresponding one-year onset rates of all mental disorders were 18.0% and 14.2%. No significant differences were found between ages or between waves. Major depressive episodes accounted for about half of the psychiatric morbidity. Those women whose menopause started early were more often mentally impaired than others and they also tended to have been more often impaired even before the climacteric (ages 30-39). Menopause was not associated with any onset risk of mental disorder, but a relationship was found between this rate and the weighted sum of other life events. The latter association remained significant even when correction was made for age, social class and marital status. Divorced and the childless women ran an increased risk of developing a mental disorder with functional impairment in the 6-year period between the waves. Women from the lower social classes evidenced an increased risk of contracting some mental disorder during the same period. PMID- 3859971 TI - Ovarian steroid hormones. Effects on mood, behaviour and brain excitability. AB - Estradiol and progesterone both accumulate in the brain. Specific cytosol receptors are present in certain CNS regions. Estradiol increases but progesterone decreases the brain's excitability. The effects can be mediated via monoamine systems or a change in monoamine metabolizing enzymes, but other mechanisms are possible. The combination of estradiol and progesterone seem to provoke a negative mood change in certain sensitive women. Estradiol and progesterone singly seem not to have these negative effects on mood, but perhaps positive effects instead. PMID- 3859972 TI - Estrogens around the menopause. Some metabolic aspects of clinical treatment. PMID- 3859973 TI - Continuous treatment with a combination of estrogen and gestagen--a way of avoiding endometrial stimulation. Clinical experiences with Kliogest. AB - Nearly 5 years' experience of continuous treatment with a preparation consisting of natural estrogens combined with norethisterone acetate is presented. The effect on both climacteric symptoms and hormonal parameters was good, even though the endometrium remained atrophic or became so. This was the case even when the endometrium was hyperplastic and/or atypical prior to treatment. This treatment appears to be better than those in common use--at least in selected cases. PMID- 3859974 TI - Menopausal age and risk of cardiovascular disease and death. A 12-year follow-up of participants in the population study of women in Gothenburg, Sweden. AB - A longitudinal population study of 1462 women initially aged 38-60 has been proceeding in Gothenburg, Sweden since 1968. The results presented in this paper deal with menopausal age in relation to cardiovascular disease and overall mortality and refer to the initial 12-year follow-up period. The risk ratios concerning early menopausal age for all the various cardiovascular end-points studied were increased, except for new events of ECG changes suggestive of ischaemic heart disease. However, none of the risk ratios studied between menopausal age on the one hand and the 12-year incidences of myocardial infarction, angina pectoris, or stroke, on the other, was significantly increased when women who had reached the menopause at the age of 40, 45, or 50 were compared with the rest of the participants in the population study. When early menopause was related to the overall mortality, the risk ratio was increased only for women who had reached the menopause at the age of 50, but not sufficiently to be statistically significant. When reviewing the literature, it is obvious that the results from previous studies are discrepant and do not permit of any generalized conclusion as to whether there is a correlation between early menopause and ischaemic heart disease or not. Nor is our longitudinal study conclusive in this respect. PMID- 3859975 TI - The influence of hormonal replacement therapy on lipid and lipoprotein metabolism. PMID- 3859976 TI - Estrogen-progestogen replacement in climacteric women, particularly as regards a new type of continuous regimen. AB - Twenty-six peri- and postmenopausal women were treated with daily dose of 2 mg 17 beta-estradiol, 1 mg estriol and 1 mg norethisterone-acetate in a continuous regimen for 12 months. Clinical parameters such as vasomotor symptoms, bleeding patterns and histopathology were recorded. Blood samples were collected before, after 3 months and after 12 months of treatment and were analysed for estradiol 17-beta, estrone, androstenedione in serum and lipoprotein lipids. A marked reduction of hot flushes and sweatings was noted and the number of days with bleeding gradually decreased during treatment, especially in the postmenopausal group of women. No signs of hyperplasia of the endometrium were recorded. A decrease in the serum concentration of testosterone and androstenedione was found during treatment. The reduction in triglycerides in very low density lipoproteins after 3 months, concomitant with a decrease in the cholesterol content of high density lipoproteins, was interpreted as an effect mainly of the progestogen component in the preparation. The present formulation of estrogen-progestogen, continuously administered, may be an appropriate alternative treatment regimen for many women. One proposition of how to treat women with climacteric complaints around the menopause is presented. PMID- 3859977 TI - The risk of endometrial and breast cancer after estrogen treatment. A review of epidemiological studies. AB - Estrogen treatment of climacteric women has been found to be associated with a substantially increased risk of endometrial cancer and a possible slight excess risk of breast cancer. Numerous retrospective case-control studies, reported mainly in the United States, have provided evidence of a causal link between the use of estrogens and the development of endometrial cancer. The magnitude of the risk increase has been shown to be correlated with characteristics of the exposure, chiefly the duration of treatment and the presence of certain host factors in the patient, e.g. obesity and late menopause. Cases of endometrial cancer occurring after estrogen exposure were shown to have favorable tumor characteristics and excellent survival rates. The early results from a prospective cohort study have indicated that estrogen therapy, as practised in Sweden, is associated only with an excess risk of premalignant endometrial changes and that the addition of progestogens might exert a protective effect. The risk of breast cancer after estrogen therapy has been studied in both retrospective and prospective investigations. In the majority of these studies no evidence of an increased risk has been found. However, in two case-control and two follow-up studies the risk estimates were slightly but significantly raised in association with long-term and high-dose exposure. PMID- 3859978 TI - Does estrogen replacement therapy predispose to thrombosis? PMID- 3859979 TI - A clinical and scanning electron microscopic study of a new restorative material for use in posterior teeth. AB - Eighty-two restorations with a new posterior restorative material showed good wear resistance on the occlusal surfaces after 2 years of service. The loss of substance averaged 30-50 micron, which is below the clinically detectable level. Inferior contact points were frequently registered, reflecting the problems with inadequate matrix systems. Clinically relevant problems were all related to the quality of the contact area. PMID- 3859980 TI - Cracks in gold crowns cemented on amalgam restorations. AB - Twenty-seven gold crowns, removed from patients with problems such as diffuse pain and metallic taste, have been examined. The gold crowns were made of an ordinary casting gold alloy, type III. The crowns were built on amalgam cores or big amalgam fillings. Eight of these crowns had cracks beginning at the cervical margin and propagating occlusally. The crowns were examined in a scanning electron microscope equipped with an energy-dispersive detector. The study showed that the cracks propagated along the grain boundaries within the gold alloy. In the cracks corrosion products usually found on amalgam were identified. The cracks could be due to intercrystalline stress corrosion or overloading. PMID- 3859981 TI - The effect of verbal information and demonstration on denture hygiene in elderly people. AB - The purpose of the present study was to investigate the effect of two oral hygiene information programs on denture hygiene. The programs were provided individually to healthy elderly denture wearers. Totally, 150 edentulous persons between 67 and 89 years of age were selected and randomly assigned to two experimental groups and one control group. In one test group (INFO) the participants were only given individual verbal information on how to remove denture plaque. The participants of the second test group (DEMO) received individual demonstration of denture cleaning in addition. One hundred and thirty eight persons completed the study. The percentage plaque covering the maxillary denture base was assessed by a morphometric point-estimator scoring method at the start of the study and after 14 and 180 days. Verbal information resulted only in a short-term effect (14 days), whereas demonstration on how to remove denture plaque gave long-term (180 days) improvement of denture hygiene. PMID- 3859982 TI - Number of teeth and tooth loss of former dental school patients. Follow-up study after 10-17 years. AB - Persons (n = 431) who had received endodontic and other treatment at the School of Dentistry in Bergen in the 1960s were invited to attend an examination in 1980, some 10-17 years after their first course of treatment. The age range initially had been 16-55 years. The attendance rate was 55% (149 women and 89 men) and was higher for the older age groups. Data from pre- and post-treatment records were added to the information obtained in 1980. Those who attended in 1980 had had 22.8 teeth at the initial examination and 21.2 teeth after their first course of treatment in the 1960s. In 1980 they had 19.3 teeth. About 20% of the persons had the same number of teeth at all three examinations, and 43% had not lost teeth after completing treatment at the school. Molars and maxillary teeth were most likely to have been extracted. This was also the case for teeth lost during the first course of treatment. Some 4% of the individuals had become edentulous. Conventional dental treatment had not prevented further tooth loss; the number of remaining teeth within each age group was about the same in 1980 as in the 1960s. PMID- 3859983 TI - Chemical and morphological studies of the acquired pellicle formed subgingivally on dentin in vivo. AB - The morphological appearance and chemical composition of the subgingival pellicle were studied, using Auger analysis and scanning and transmission electron microscopy. A pellicle was formed on pieces of dentin (2 X 2 X 1 mm), prepared from freshly extracted teeth after root planing. The dentin slabs were inserted for 2 h into healthy gingival sulci. Control slabs cemented supragingivally were used for comparison. The results confirmed the presence of an organic film on the surface of all slabs. Auger analysis of the organic film showed the presence of Ca in the supragingival integument but not in the subgingival integument. The subgingival pellicle was in all cases thicker than the supragingival pellicle. The transmission and scanning electron microscopy observations confirmed the presence of a film essentially free of bacteria on the subgingival specimens and also indicated a possible morphological difference between the supra- and sub gingival pellicle. PMID- 3859984 TI - Long-term effects on chewing with mandibular fixed prostheses on osseointegrated implants. AB - Twenty-seven edentulous patients with denture adaptation problems were first given optimal conventional complete dentures and then a fixed prosthesis on osseointegrated dental implants in the lower jaw (and a complete maxillary denture). Masticatory function was evaluated by means of a questionnaire, a comminution test for chewing efficiency, and bite force measurements on four occasions: with the original (I) and optimal complete dentures (II) and 2 months (III) and 3 years (IV) after insertion of the fixed mandibular prosthesis on implants. No significant improvement of masticatory function was found after conventional denture treatment. After insertion of the fixed mandibular implant bridge, a marked improvement of the patients' assessment of their chewing ability and of the results of the chewing efficiency test and the bite force measurements was recorded. The test results were further improved after the 3-year observation period, which indicates that adaptation to the new prosthetic situation is a gradual process. PMID- 3859985 TI - Observer performance in assessment of condylar position in temporomandibular joint radiograms. AB - The condylar position at centric occlusion has been considered important in diagnosis of the temporomandibular joint. The present study describes inter- and intra-observer variation in radiographic assessment of condylar position. One radiogram obtained by using an individualized lateral oblique transcranial projection and three corrected sagittal tomograms from the lateral, central, and medial parts of the joint were selected from each of 31 patients. In the resulting 124 radiograms three observers assessed the position of the condyle as posterior, central, or anterior on two occasions, 3 months apart. Concordant reports for all three observers were found in 63%. The interobserver agreement two by two ranged between 69% and 79%, whereas the intraobserver agreement ranged between 81% and 90%. The observer variation and limitations of radiographic techniques should be considered when the therapeutic implication of condylar position is discussed. PMID- 3859986 TI - Dental health, dental care, and dietary habits in children in different parts of Sweden. AB - An epidemiological study of dental health, dental health care, and sociodemographic data in 817 4-, 8-, and 13-year-old children was carried out in 1980/81 in two areas in the county of Vasterbotten, northern Sweden, and in one area in the northern part of the county of Alvsborg, in southwestern Sweden. Dietary habits and nutrient intake were studied in 738 of the children. The aim of the study was to examine the dental health in the different areas and to study the importance of variations in related background factors. The results showed great differences in dental health in all age groups between the two counties. There were also differences between the two areas in the north, but these were not as evident. A discriminant function analysis showed that age when organized dental care started and tooth-brushing frequency had greater explanatory power on dental caries than food habit factors. PMID- 3859987 TI - Stereo radiography of lumbar spine motion. AB - The technique of Biplanar Radiography for the computer analysis of orthogonal radiographs of the human spine enables the calculation of three-dimensional coordinates for anatomical landmarks on the vertebrae. Three-dimensional intervertebral movements are deduced from the changes in the relative orientations of the vertebrae as a subject moves from one position to another. The three-dimensional coordinates of the anatomical landmarks on the vertebrae were found to have an RMS error of less than 1 mm. The RMS errors for translational movements were less than 2 mm and for rotations were less than 1.5 degrees. This study of normal subjects has defined the ranges of voluntary flexion and extension, axial rotation, and lateral bending in the lumbar spines of young males. The range of flexion plus extension at each lumbar intervertebral joint is approximately 14 degrees with the L4/5 level being slightly more mobile than the others. There are approximately 2 degrees of axial rotation at each joint with L3/4 and L4/5 being slightly more mobile. Lateral bending of approximately 10 degrees occurs at the upper three levels while there is significantly less movement of 6 degrees and 3 degrees at L4/5 and L5/S1 respectively. In flexion and extension accompanying axial rotation of 2 degrees or more and lateral bending of 3 degrees or more occurred rarely and any larger accompanying rotation at an intervertebral joint should be considered abnormal. During twisting and side bending axial rotation to the right is accompanied by lateral bending to the left and vice versa at the three upper levels. At L5/S1 axial rotation and lateral bending generally accompany each other in the same direction while L4/5 is a transitional level. During lateral bending there is also generally extension at the upper levels and flexion at L5/S1. The measurement in vivo of the accompanying rotations in the other planes has demonstrated that there is no simple mechanical coupling of the rotations. Finally, this study has provided a base line of normal movements to which the movements seen in pathological conditions can be compared. PMID- 3859988 TI - Skin perfusion pressure measured by radioisotope washout for predicting wound healing in lower limb amputation for arterial occlusive disease. PMID- 3859989 TI - Studies on the mechanism of action of antifertile PG in animal models. AB - Antifertile effects of PGF2 alpha, PGE2, PGE1, sulprostone and other PGs were evaluated in different pregnancy models in rats, guinea pigs and rhesus monkeys and the underlying mechanisms of action were investigated. Quantitative and qualitative species differences and pregnancy stage dependency were recorded. Basic regulatory differences of the pregnant uterus seem to exist in these species. In early pregnant rats, abortifacient effects were based on luteolytic effects, independent of the PG used. The myometrium was found to be refractory to the injected PG as long as serum progesterone levels were kept high. By contrast, in guinea pigs after the luteoplacental shift of progesterone secretion (tested after day 40 p.c.) and in rhesus monkeys even before this shift (tested day 20 p.c.) abortifacient effects were found to be exerted by direct stimulation of the myometrium. Uterine stimulation was possible in the presence of any level of serum progesterone. The induction of uterine PG synthesis was probably of importance supporting the expulsion. The role of obvious tissue damage within the conceptus remained uncertain. In contrast to rats there seems to be a pre existing PG-sensitivity of the pregnant myometrium in guinea pigs and primates. In guinea pigs sensitivity slightly increased for E- but not for F-type PG toward term. Oxytocin sensitivity was found to increase by a factor of more than 100 between days 23-63 of pregnancy. Time dependent changes in uterine receptivity to PG and oxytocin may be considered as a regulatory principle which might permit parturition to occur in the presence of progesterone as an evolutionary adaptation to a placental progesterone secretion which cannot be abolished. It was concluded that in the presence of already established gradual uterine responsiveness to PG (and Oxytocin) during gestation efficient blocking mechanisms for uterine PG-formation must exist in order to explain uterine quiescence. Almost complete resistance of pregnancy to oestrogen which exists in humans, monkeys and guinea pigs was considered as to be pharmacological evidence of such a mechanism. The principles of endocrine control of the myometrium and its pharmacology seem similar in guinea pig and primate pregnancy. The guinea pig might therefore provide a relevant model to study potential drug effects on the regulatory balance of the pregnant uterus and also to achieve a better understanding of human uterine physiology. PMID- 3859990 TI - Binge eating and dietary restraint in obese patients. AB - The present study was conducted to determine the prevalence and severity of binge eating among 432 women seeking behavioral treatment for obesity and to assess the relationship between binge eating and dietary restraint. Subjects completed standardized self-report questionnaires which assessed the severity of binge eating and habitual dietary restraint. Binge eating was extremely prevalent, with 46% of subjects reporting serious problems. Serious binge eating was more common in younger and heavier subjects. Further, binge eating severity was significantly related to overall dietary restraint. The current findings indicate that the treatments of binge eating may need to be considered in planning behavioral programs for the obese. PMID- 3859991 TI - [Sex preselection? Contribution to reproductive behavior in East Germany. Survey of an urban population group]. PMID- 3859993 TI - [The occurrence of supernumerary canals in the palatal roots of upper 1st molars]. PMID- 3859992 TI - [Quality testing of cement materials using measures of linear deformation under laboratory conditions]. PMID- 3859994 TI - [The significance of the incidence of various factors in the etiology of burning mouth syndrome]. PMID- 3859995 TI - [Subjective oral symptoms in metal industry workers]. PMID- 3859996 TI - [Genetic defects of the enamel]. PMID- 3859997 TI - [The new WHO form for epidemiological research in dental and periodontal diseases]. PMID- 3859998 TI - [Clinical evaluation of cefmenoxime (CMX) for complicated urinary tract infection]. AB - Cefmenoxime (CMX), a new semisynthetic antibiotic, was administrated in 29 cases diagnosed as complicated urinary tract infection. All patients received drip injection of 2 g (twice a day) for 5 days. Clinical results were excellent in 1 patient (3.4%), good in 15 patients (51.8%) and poor in 13 patients (44.8%). Effectiveness rate was 55.2%. In bacteriological response, out of 35 strains 27 (77.1%) strains were eradicated and 8 (22.9%) strains persisted. As for side effects, except one case of transient diarrhea after administration, no noteworthy reactions were observed. Laboratory abnormalities attributed to CMX treatment consisted of 4 cases of elevated serum transaminase and 2 cases of elevated serum creatinine. PMID- 3859999 TI - Spontaneous and cold pressor test-induced prostaglandin biosynthesis by human heart. AB - To investigate prostaglandin biosynthesis by the heart, 21 patients undergoing cardiac catheterization and coronary angiography for congenital or acquired heart diseases other than coronary artery disease were investigated. Prostacyclin (as 6 keto-PGF1 alpha), PGE2, PGF2 alpha and TxA2 (as TxB2) were measured by specific radioimmunoassay in blood from coronary sinus, aorta, and a peripheral vein under resting conditions and following cold pressor test (CPT). PGF2 alpha was always found undetectable. In resting conditions, no significant differences in plasma 6 keto-PGF1 alpha, PGE2, or TxB2 concentrations were found among coronary sinus, aorta, and peripheral venous blood and no transcardiac gradient existed (mean: +0.4 +/- 1.2 pg/ml for 6-keto-PGF1 alpha, +0.1 +/- 0.6 pg/ml for PGE2, and -0.4 +/- 9.9 pg/ml for TxB2). CPT was able to induce a significant increase in 6-keto PGF1 alpha and PGE2 concentration in blood from the different sampling sites and a significant transcardiac gradient was found following CPT (+11.6 +/- 7.4 pg/ml for 6-keto-PGF1 alpha (p less than 0.01) and +5.2 +/- 3.6 pg/ml for PGE2 (p less than 0.001). TxB2 levels significantly increased in peripheral venous blood (from 18.3 +/- 6.2 to 29.2 +/- 20.3 pg/ml, p less than 0.05), but they did not increase either in coronary sinus (from 21.9 +/- 9.7 to 22.9 +/- 9.8 pg/ml) or in aorta (from 22.3 +/- 4.7 to 19.1 +/- 6.5 pg/ml). Present results indicate that a cardiocoronary prostacyclin and PGE2 synthesis is inappreciable under resting conditions but it becomes remarkable following sympathetic stimulation. On the contrary, no TxA2 cardiocoronary biosynthesis seems to occur in patients free from coronary artery disease. PMID- 3860000 TI - Infectious and bleeding complications in patients with glycogenosis Ib. AB - Clinical, hematologic, and immunologic findings were reviewed in 21 patients with glycogenosis Ib. Fifteen of the patients suffered from moderate to severe bacterial infections. Ten patients had excessive epistaxis or bleeding from surgical sites, and eight suffered oral and anal mucosal ulceration. Sixteen of 21 patients exhibited chronic neutropenia associated with abnormalities in myeloid maturation and decreases in the bone marrow storage and peripheral marginating pools. Diminished neutrophil motility was documented in 14 of 15 patients tested, and adherence was decreased in three patients studied. Neutrophil microbicidal activity, reduction of nitroblue tetrazolium, and ingestion were normal in all patients tested. Bleeding times were prolonged in five of eight patients, and results of platelet function studies were abnormal in five individuals. Excessive bleeding in patients with glycogenoses Ia and Ib are similar and may be secondary to the functional deficiency of glucose-6 phosphatase. However, neutropenia, neutrophil dysfunction, and the resulting infectious complications are specific for Ib disease and may be related to abnormal glucose-6-phosphate transport. PMID- 3860001 TI - Childhood leukemia and parental occupation. A register-based case-control study. AB - To explore possible etiologic factors of childhood leukemia, a case-control study was performed in the Netherlands. Cases were selected from a complete nationwide register of cases of childhood leukemia which were diagnosed between 1973 and 1980. Controls were matched with cases for year of birth, sex, and place of residence at the time of diagnosis. Information about possible exposures was collected by a postal questionnaire addressed to the parents. This report concerns the results of the analysis of parental occupations and occupational exposures for 519 children with acute lymphocytic leukemia and 507 controls. During pregnancy, more mothers of patients were working in "hydrocarbon-related" occupations; relative risk (RR) = 2.5 (95% confidence interval (CI) = 0.7-9.4). Likewise, greater occupational exposure to chemicals (paint, petroleum products, and unspecified chemicals) during pregnancy was found for mothers of patients (RR = 2.4, 95% CI = 1.2-4.6). The kind of work being performed by the mothers one year before diagnosis did not differ between cases and controls. For the fathers, no relationship was found between a hydro-carbon-related occupation or occupational exposure to chemicals and leukemia in the offspring. Adjustment for birth order, social class, and degree of urbanization did not materially change the relative risks. PMID- 3860002 TI - Frequency of illness associated with epidemic hepatitis A virus infections in adults. AB - Hepatitis A virus infection is often described as mild or asymptomatic, particularly in children. The failure of most adults who are found to be immune to remember symptoms of an illness suggestive of hepatitis A virus supports this belief. In 1982, two large outbreaks occurred in well documented populations of military personnel. These outbreaks were each extensively studied epidemiologically and serologically. It was found that 28/29 (96.6%) hepatitis A infections recognized prior to immune serum globulin in Outbreak A and 35/46 (76.1%) infections in Outbreak A were symptomatic. Symptomatic cases failed to occur beyond eight days of immune serum globulin administration to these predominantly susceptible groups. Between 40 and 70% of patients were icteric. Apparent contrasts in symptoms associated with hepatitis A infection in adults and children suggest a basic age-dependent difference in immune response to such infection. PMID- 3860003 TI - Protein kinases in human leukemic cells. AB - Protein kinase activities and cyclic AMP binding capacity were investigated in human peripheral blood cells from leukemic patients and normal controls. Using [gamma 32P] ATP as phosphoryldonor, the phosphorylating activities were not found to be significantly different in either normal or leukemic cells when measured on both artificial basic and acidic substrates. In contrast, the GTP-dependent casein kinase activity, CK2, which is almost undetectable in normal granulocytes, was markedly increased in highly proliferating myeloblastic cells from patients with acute myelogenous leukemia (AML) or with chronic myelogenous leukemia in blastic crisis (BC-CML). Levels of endogenous phosphotyrosine were not higher in leukemic cells than in normal peripheral lymphocytes or granulocytes. Finally, cAMP binding capacity was found to be increased in several types of proliferating leukemic cells, due to a higher amount of the R1-type regulatory subunit of the cAMP-dependent protein kinases. Specific patterns of cAMP binding proteins observed in the different types of normal blood cells were rather blurred in leukemic cells. In conclusion, modifications observed in human leukemic cells seem to be more related to proliferation or blockage in normal differentiation than to their cellular origin. PMID- 3860004 TI - A case of agnogenic myeloid metaplasia evolving into acute myelogenous leukemia associated with the development of trisomy 11 in bone marrow cells. AB - An 83-year-old woman who had a 5-year history of agnogenic myeloid metaplasia and a previous normal marrow cell karyotype presented with acute myelogenous leukemia (AML) associated with the development of trisomy 11 in 100% of cultured marrow cells. Isolated trisomy 11 in marrow cells has been reported previously in five cases of AML, suggesting that trisomy 11 is a nonrandom chromosomal aberration associated with AML. PMID- 3860005 TI - Transformation of myeloma into Ph1-negative CML with plasma cell antigens. AB - We report a patient in whom Ph1-negative chronic myelogenous leukemia (CML) developed 15 years after the diagnosis of myeloma. Combined staining of morphologically myeloid elements in the peripheral blood for myeloid and plasmacytoid antigens revealed double-marker expression, suggesting that the two neoplasms arose from a common originator cell. PMID- 3860006 TI - Pulmonary leukostasis as the single worst prognostic factor in patients with acute myelocytic leukemia and hyperleukocytosis. AB - Patients with acute myelocytic leukemia and hyperleukocytosis have a poor prognosis due to vascular leukostasis and infiltration in the central nervous system and lungs. The clinical records of all patients with a new diagnosis of acute myelocytic leukemia and initial white blood cell count greater than 100,000 X 10(9)/liter admitted to the Mount Sinai Medical Center between the years 1974 and 1983 were examined. Forty-three patients were identified, 22 of whom had clinical and/or pathologic evidence of leukostasis of the central nervous system and/or lung. All patients received induction chemotherapy with daunorubicin and a continuous infusion of cytosine arabinoside. Thirty-five patients also underwent therapeutic leukapheresis prior to induction chemotherapy. The overall remission induction rate in these 43 patients was 51 percent. Fifteen patients had lung leukostasis; the remission rate for these patients was 27 percent (three complete remissions, one partial remission), as compared with a remission rate of 64 percent (18 of 28) for those without pulmonary leukostasis (chi 21 = 5.53; p = 0.02). Thirteen patients had central nervous system infiltration; the remission rate for these patients was 46 percent (five complete remissions, one partial remission), as compared with 53 percent (16 of 30) for patients without central nervous system involvement (chi 21 = 0.19; p = 0.67). The median survival of 21 patients without leukostasis was 10.8 months, as compared with 15.4 months for seven patients with central nervous system involvement and no lung leukostasis and 0.2 months for 15 patients with pulmonary leukostasis (chi 22 = 19.9; p less than 0.001). Thus, pulmonary leukostasis was found to be the single worst prognostic factor in this group of patients. PMID- 3860007 TI - Paternity testing with genetic markers: are Y-linked genes more efficient than autosomal ones? AB - The average probability of exclusion for a Y-linked locus is computed and compared with that for an autosomal locus. It is shown that even if a Y-linked locus is only marginally polymorphic, it considerably enhances the chance of paternity exclusion in paternity dispute cases involving sons. For the positive identification of paternity, a Y-linked marker is not necessarily more ideal than an analogous autosomal marker since the discrimination of true fathers from random men not excluded from paternity (RMNEP) is still difficult on the basis of a paternity index. It is concluded that Y-linked markers are more efficient for paternity exclusions of male children, while for the positive identification of paternity their advantages over the autosomal markers are questionable. PMID- 3860008 TI - Enhanced expression of chromosome fragile site 10q25 in chronic myelogenous leukemia. AB - Spontaneous expression of a BrdU-sensitive fragile site at 10q25 was observed in normal lymphocytes and malignant blood and bone marrow cells in chronic myelogenous leukemia (CML). The cells were marked by a Philadelphia chromosome rearrangement due to insertion of 22q11----q13 at 11q13. The fragile site at 10q25 was expressed in larger proportions of malignant than normal cells. Although this fragile site is not at a cancer chromosome breakpoint, malignancy enhanced its expression, consistent with a cascade effect. PMID- 3860009 TI - A perspective of the Crozat appliance with case reports of its present use. AB - Dr. Crozat of New Orleans first publicly described his removable appliance in 1919. He led a small study club for years, sharing his ideas with a few fellow orthodontists, but published only one article. A.T. Wiebrecht, a general dentist from Milwaukee, studied with Dr. Crozat for many years. In 1966, Wiebrecht published his book, Crozat Appliances in Maxillofacial Orthopedics, and for the first time information about the Crozat appliance was made available to all dentists. Dr. Wiebrecht's goal was to treat all patients to Pont's index; therefore, he advocated lateral expansion of molars and premolars. Wiebrecht's philosophy of expansion appeals to many gnathologists and pedodontists. Dr. Crozat's goal was to solve crowding by the distal movement of molars. As he moved the molars distally, expansion of the appliance was necessary because the bony dental arch itself is wider in the posterior regions. He did expand the lower premolars if they were lingually positioned, but he did not expand the upper canines or premolars as a routine part of his treatment. Thus, two entirely different applications of this appliance have been developed. This article examines the history of Dr. Crozat and his appliance, discusses the development and divergence in its use, and demonstrates this divergence with a few selected, documented case reports. PMID- 3860010 TI - Dentofacial findings in two individuals with unoperated bilateral cleft lip. AB - Details of the dentofacial relationships in two patients with different degrees of bilateral cleft lip and/or alveolus are presented. The severity of the cleft has a strong influence on the extent of the associated anomalies present. PMID- 3860011 TI - Begg-edgewise diagnosis-determined totally individualized orthodontic technique: foundations, description, and rationale. AB - This article presents an appliance system designed to facilitate efficient treatment by the use of the biomechanical approach considered most suitable by the orthodontist for the individual patient. The system described uses narrow, single brackets with 0.022 X 0.028 inch edgewise arch wire slots and 0.020 X 0.020 inch vertical slots for various auxiliaries. There are five brackets that differ only in the torque of the arch wire slot-0 degree, 5 degrees, 10 degrees, 15 degrees, and 20 degrees. Thus, an appropriate bracket can be selected for any tooth in any situation. The brackets and bonding pads are small in all dimensions to ensure optimal appearance and interbracket arch wire spans and minimal lip and cheek irritation. This also lessens occlusal interference, enamel surface involved in bonding, and problems with gingival proximity and oral hygiene. The basic buccal tubes are conventional 4.5 mm long, 0.022 X 0.028 inch torqued edgewise tubes. A buccal tube assembly with a similar additional rectangular tube carried diagonally at a 15 degree angle across the buccal surface of the basic tube (its mesial end pointing gingivally) is used in extraction cases with deep overbites or moderate-to-severe anchorage requirements. The angulated outer tube carries the main (working) arch wire during the bite-opening and retraction phases of treatment. A rectangular sectional wire in the inner tube and second premolar bracket locks the molar and premolar teeth together so that neither can tip independently. As a unit they provide anchorage for bite opening and retraction. The gingivally positioned and angulated outer tube directs the arch wire out of danger of distortion from mastication and provides a built-in biteopening effect. The molar and premolar teeth, in effect, become a single large tooth with its center of resistance (CR) further mesial than the CR of the molar. Sectional wires result in a more favorable system of moments created by arch wires and elastics. This delivers more intrusive force to the incisors with less tendency to tip the anchor units. The appliance provides the orthodontist with an extensive range of options in treatment mechanics--from anchorage conservation and rapid movement of limited tipping by light forces to translation or stabilization with precise three-dimensional control. PMID- 3860012 TI - Prediction of mandibular incisor and canine crowding changes in the mixed dentition. AB - To test the hypothesis that preeruptive tooth positions and dental arch parameters might forecast crowding changes, a sample of 47 aboriginal children (26 males, 21 females) was selected stringently on the basis of Class 1 characteristics and an untreated dentition unaffected by caries or attrition. Crowding scores, radiographic relationships of 765E, and dental arch dimensions were evaluated for the mixed dentition (Stage 1, 8.91 +/- 1.05 years) and earliest emergence of the permanent dentition (Stage 2, 12.48 +/- 0.97 years). Changes between the stages were calculated and the sample was divided into two groups, according to an increase (Group 1) or decrease (Group 2) in incisor and canine crowding. Multivariate and multiple regression analyses were used to identify predictors (Stage 1 radiographic and dental arch parameters) of incisor and canine crowding behavior. Dental arch form and tooth size were important factors in measuring the amount of incisor or canine crowding at Stage 1 and Stage 2. Neither the radiographic nor the dental arch predictors proved useful in forecasting crowding changes. Group 2 dental arches tended to be initially narrower, shallower, and more crowded; however, they showed greater molar and canine width expansion and lessened arch depth reduction than Group 1 cases. Many cases showed a reduction in canine crowding from mixed to permanent dentition. This appeared to be largely independent of the observed incisor crowding. Sexual, racial, and individual variations in dentofacial pattern reinforce the need to carefully consider interceptive extraction or space-regaining therapy for each patient because of the unpredictability of crowding behavior during the transition from mixed to permanent dentition. PMID- 3860013 TI - Development of human craniofacial morphology during the late embryonic and early fetal periods. AB - After formation of the primary palate during the fifth and sixth weeks postconception (PC), human facial morphology develops rapidly and by 10 weeks PC the face has a typically human appearance. The objective of this study was to review major growth changes associated with development of face shape during this period. Morphometric evaluation of staged human embryos and fetuses in the Carnegie Embryological Collection showed that between 7 and 10 weeks PC when crown-rump (CR) length increased from 18 to 49 mm, facial structures grew predominantly in the sagittal plane, with a four-fold increase in length, a two fold increase in height, but little change in width. These growth changes altered relations of oronasal structures and at 8 weeks PC the palatal shelves elevated. The sagittal position of the maxilla and the mandible to the anterior cranial base increased by 25 degrees and 30 degrees, respectively, and the mandible was prognathic during secondary palate closure in the first 2 weeks of fetal development. Both the mean cranial base angulation--which remained unchanged at 128 degrees--and the achieved maxillary position of 84 degrees were similar to the angulations present later, prenatally and postnatally. Therefore, human patterns of cranial base angulation and maxillary position appear to develop during the late embryonic period when the chondrocranium and Meckel's cartilage form the continuous craniofacial skeleton. The results suggest that rapid directional growth of the primary cartilages is important to development of normal human facial morphology and that interference with normal growth changes during this early critical period may produce irreversible effects on the face. PMID- 3860016 TI - Prevalence of bulimia in working and university women. AB - The authors determined the prevalence of binge eating and bulimia in samples of 139 working women and 234 women who were university students. Although binge eating was found in 57 (41%) of the working women and 161 (69%) of the university women, the syndrome of bulimia was found in only two (1%) of the working women and 12 (5%) of the university women. These findings, although significant, stand in sharp contrast to popular reports that one-half or more of young women suffer from eating disorders. Further, they reveal systematic differences in the prevalence of bulimic behaviors between working women and university women. Results are discussed in terms of factors that might be associated with bulimia in these two samples of women. PMID- 3860014 TI - Fatal antral ulcer in conventionally fed W/Wv mutant mice given indomethacin by injection. AB - Antral ulcers develop spontaneously in (WB X C57BL/6)F1-W/Wv mice. Most W/Wv mice with severe ulcers die within 3 months after birth. When healthy-looking W/Wv mice were selected at 4 months of age, 80-90% of them were free from the ulcer. Even if the ulcer was present, it was small. The authors compared the susceptibility of such healthy-looking W/Wv mice to ulcerogenic treatments with that of the congenic +/+ mice. Stress caused development of fundic erosions in both W/Wv and +/+ mice. The susceptibility of the W/Wv mice to either cold or water-immersed stress was not higher than that of the +/+ mice. Topical administration of aspirin produced erosions in both fundus and antrum. The susceptibility of W/Wv mice to aspirin was comparable to that of the +/+ mice in either the starved or the fed condition. Subcutaneous injection of indomethacin produced both fundic erosions and antral ulcers in the starved condition, but it produced only antral ulcers in the conventionally fed condition. The susceptibility of the starved W/Wv mice to indomethacin was not higher than that of the starved +/+ mice. In contrast, the fed W/Wv mice were significantly more susceptible to indomethacin than the fed +/+ mice. A considerable proportion of the fed W/Wv mice died of blood loss from the ulcer within 24 hours. The size of the ulcer of the W/Wv mice was significantly larger than that of the +/+ mice. Both genetic and feeding conditions seem to determine the susceptibility to indomethacin. PMID- 3860015 TI - Compartmentalization of 11-oxidoreductase within fetal lung alveolus. AB - The role of 11-oxidoreductase in the cellular process of fetal lung surfactant production and its localization within the alveolar domain have been investigated. In organotypic cultures of fetal rat lung, cortisol and cortisone markedly stimulate saturated phosphatidylcholine synthesis by the alveolar type II cell; a 10-fold excess of 11-ketoprogesterone blocks the bioactivity of cortisone. Both cortisol and cortisone also stimulate fibroblast-pneumonocyte factor production, whereas 11-ketoprogesterone blocks the effect of cortisone, but not of cortisol, suggesting that cortisone stimulation of fibroblast pneumonocyte factor production depends on its conversion to cortisol by 11 oxidoreductase. A survey of the cells that are present in the alveolar domain revealed that 11-oxidoreductase activity is only present in the fibroblast. Localization of both 11-oxidoreductase and fibroblast-pneumonocyte factor production within the same cell emphasizes the significance of 11-oxidoreductase in the regulation of fetal lung surfactant production. PMID- 3860017 TI - Massed negative practice as a behavioral treatment for Gilles de la Tourette's syndrome. AB - Gilles de al Tourette's syndrome with its vocal and motor tics has been treated successfully with haloperidol and in some cases with massed negative practice. Two additional cases of successful treatment with massed negative practice are presented, one with additional psychotherapy, one with two-year follow-up. The combined use of haloperidol and massed negative practice may be optimal in some cases. PMID- 3860018 TI - A hazard with the Servo 900B ventilator. PMID- 3860019 TI - Antipollution systems. PMID- 3860020 TI - Faults in expiratory valves. PMID- 3860021 TI - The MultiCircuit System. 1. Description of a device providing several Mapleson functions. AB - A device which provides for analogues of the Mapleson A, D and E anaesthetic breathing circuits in a compact and reasonably robust form is described. It incorporates a single lever for switching between Mapleson modes and uses a Heidbrink valve in the same way as the familiar CO2 absorbers. The breathing hose attachment points are similar to those on the CIG (BOC) Mark 3 absorber. This allows use with standard breathing tubes for non-coaxial purposes and, with the Mera F attachment, provides a coaxial circuit. Anaesthetic gas scavenging facilities are incorporated. PMID- 3860022 TI - The MultiCircuit System. 2. A study during spontaneous ventilation in awake volunteers using the Mapleson A mode. AB - Mapleson's A and D are the most efficient semiclosed nonabsorbing circuits used for spontaneous and controlled ventilation. A new device, the MultiCircuit System, allows single-lever selection of Mapleson A or D functions, when used with the conventional two hoses or Mera F coaxial circuit attached. In the A mode, in a study performed on awake volunteers, the MultiCircuit System with two hoses performed comparably to the Magill attachment. When coupled with the Mera F circuit as a coaxial system, the MultiCircuit System was less efficient than the Magill, and had a resistance to expiration exceeding 2cm H2O pressure at a gas flow of 30 l/minute. PMID- 3860023 TI - Split ventilator bellows. PMID- 3860024 TI - Stiffness changes in thermodynamic Nitinol with increasing temperature. AB - The purpose of this study was to measure and describe the physical properties of a recently-developed thermodynamic Nitinol alloy, type A-138, at intervals of temperature between room and body temperatures. The properties of stiffness, flexure yield strength and permanent deformation were measured, demonstrating that the working range of Nitinol A-138 is directly related to increases in temperature between 75 degrees F and 100 degrees F. As stiffness of the .017'' round A-138 Nitinol wire increases, the yield point decreases. In the loading cycle, yield points dropped from 36 degrees angular deflection at 75 degrees F to 25 degrees at 100 degrees F. In the unloading cycle, the yield point at 75 degrees F was 41 degrees of deflection, with force dropping to zero at 35 degrees; at 100 degrees F, yield point was only 12 degrees and force did not drop to zero until unloaded to 3 degrees angular deflection. PMID- 3860025 TI - Malocclusion in black Americans and Nyeri Kenyans. An epidemiologic study. PMID- 3860026 TI - Dentoskeletal determinants of soft tissue morphology. AB - The position of the lips and the soft tissues overlying points A and B seem to be substantially related to the horizontal positions of the upper and lower incisors and to the angulation of the upper incisor. The angulation of the lower incisor is much less important than its spatial position. The A-N-B angle is strongly related to the overlying soft tissue outline. Point A convexity is a very important factor in soft tissue form. The Ricketts E line, the Steiner S line and the soft tissue facial plane all seem to be equally acceptable bases for assessment of the soft tissues of the profile. PMID- 3860027 TI - Orthodontic treatment and tongue surgery in a class III open-bite malocclusion. A case report. AB - Cases such as this are a real challenge to clinical orthodontists. They require patience as well as proper diagnosis and treatment planning. The orthodontist must also help the patient psychologically by treating the teeth and surrounding structures and by treating the patient as an individual. It is the feeling of both the Author and the Plastic surgeon in this case, Dr. Fernando Ortiz Monasterio, that this type of surgery would be successful in most non pathological macroglossia cases. It appears that the sutured areas might be said to develop more dense epithelial tissue, not allowing the tongue to expand and readapt so readily to the position of the teeth in the mandibular arch. This is indicated in the present case, as is demonstrated by the decrease in width of the mandibular arch from the first molar area to the anterior part of the mouth. It should be noted that orthognathic surgery was not as widely used at the time that this patient was studied and treated as it is today. If this case had presented for the first time this year, it is likely that the treatment plan of most orthodontists would have combined orthognathic and tongue surgery, with orthodontics to lessen trauma to the supporting structures of the teeth from the extreme and complicated mechanics which would have to be used in treatment. The psychological aspects of this case were of tremendous importance; the treatment results have undoubtedly changed his life completely (Fig. 10). Once unable to speak clearly with his oversize tongue, he has since gone on to complete his education and is now a successful orthodontist. PMID- 3860028 TI - Spaced dentition. An epidemiologic study. AB - This epidemiologic study deals with the incidence of spaced dentition in 1279 students between the ages of 12 and 18 years. The sample includes only those with a full complement of permanent teeth (third molars were not considered) and with no apparent etiological conditions that might lead to disruption of dental arch continuity. The sample was evenly divided by age and sex. Frequency of spaced dentition was high, occurring in 51.8% of males and in 45.5% of females. Prevalence was less in higher age groups, and the sexual dimorphism that was significant in the 14 YR-16 YR group was not found in the 16 YR-18 YR group. The mean number of spaces per subject was 6 +/- 4.3 for males and 5 +/- 3.7 for females, again displaying diminishing incidence with age and a concomitant absence of the sexual dimorphism in the highest age group. Spaces were found in both arches in 49.5% of the spaced dentitions, and in only the maxillary arch in 34.3%. Incidence of spacing in the mandibular arch alone was only 16.2%. In most subjects the spaces were distributed equally between the two quadrants of each arch. The most common sites and largest space widths in either dental arch were found between cuspids and the first bicuspids and between cuspids and lateral incisors. PMID- 3860029 TI - Dental development, dental age and tooth counts. AB - Emergence data on the 20 deciduous teeth and the first 29 permanent teeth were collected from 212 randomly selected urban Swedish children who were followed from birth to 18 years of age. The sex difference in the emergence of the deciduous teeth is less than one month, which is not statistically significant. Boys are consistently ahead of girls until the 17th deciduous tooth. From the 17th deciduous tooth on through most of the permanent dentition, girls are consistently ahead of boys. In the permanent dentition the sex difference ranges from 3 MO to 11 MO; these differences are statistically significant except for the 29th tooth. Reference data on dental age based on counts of 1-19 deciduous and 1-27 permanent teeth are tabulated and tooth emergence curves constructed. The tooth emergence curves can be used to express individual dental development in terms of standard deviation scores. Validity of dental age assessed by counts of permanent teeth is evaluated by a cross-sectional comparison with another sample of Swedish boys and girls. The mean difference between estimated age and chronological age is about one month in either sex. Precision of an individual estimate of dental development in terms of 95% confidence level (approximately equal to +/- 2 S.D.) varies from about +/- 4 months in the deciduous dentition to +/- 3 years in the permanent dentition. Assessment of dental development and dental age by means of tooth counts is a convenient and simple method, although it can only be applied at ages when emergence can be expected. It is especially useful in cross-sectional evaluations, as no serial data are required. In populations with a low incidence of caries the impact of such disturbing factors on emergence is correspondingly low, further increasing the validity of assessments of dental development based on tooth emergence. PMID- 3860031 TI - Bulimia and gastric cancer. PMID- 3860030 TI - Relative oxytocic properties of fenprostalene compared with cloprostenol, prostaglandin F2 alpha, and oxytocin in the ovariectomized ewe. AB - The oxytocic effect of a prostaglandin F2 alpha analogue, fenprostalene, was assessed in 4 ovariectomized ewes fitted with electrodes in both uterine horns and in the cervix. In the absence of estradiol priming, significant motility changes were not elicited by fenprostalene. Conversely, when ewes were primed with 17-beta-estradiol, fenprostalene markedly increased the electrical activity in the uterus and cervix. After a single subcutaneous fenprostalene administration (5 micrograms/kg), activity values remained about twice that of the control values during 8.52 +/- 3.31 hours. When the same dosage was administered IM, similar post-injection activity values were obtained, but only during 5.88 +/- 0.72 hours. Oxytocic effects of fenprostalene were far longer than those elicited by a single IM administration of 50 micrograms of prostaglandin F2 alpha (tham salt)/kg (0.91 +/- 0.32 hours) or by a single IM administration of 1 microgram of cloprostenol/kg (1.88 +/- 0.81 hours). Using the dose-effect relationship curve obtained from the same ewes by continuous IV infusions of oxytocin (OXT), the postinjection activity values reached after a single subcutaneous administration of fenprostalene were equivalent to those of an IV infusion of OXT at an average dose of 4.09 ImU of OXT/kg/hr for 6 to 13 hours, according to the values of the particular ewe concerned. These long lasting oxytocic properties, in addition to its luteolytic capabilities, would make fenprostalene a suitable drug for promoting effective evacuation of the uterus when required in daily veterinary practice. PMID- 3860033 TI - In vitro fertilization and embryo transfer. PMID- 3860032 TI - In vitro fertilization and embryo replacement: opening lecture. PMID- 3860034 TI - Effect of clomiphene on the functional morphology of oviductal and uterine mucosa. AB - The effect of clomiphene on the functional morphology of the uterine and oviductal mucosa was studied in rabbits by means of light and electron microscopy (SEM and TEM). Tissues were obtained from mature nulliparous animals receiving subcutaneous doses ranging from 0.01-10 mg/kg per day. In all cases the effects were evaluated 2 days after termination of treatment. With 2 and 10 mg, effects were studied up to 12 and 7 days, respectively. Normally appearing oviductal and endometrial tissues, corresponding to various stages of the cycle, were observed with doses up to 5 mg. However, a burst of cellular secretory activity becomes evident with the administration of higher doses. Apical protrusions or cytoplasmic portions seem to be extruded, and draw attention. These cytologic events are concentrated near gland openings in the endometrium and can be seen abundantly among cilia of oviductal cells. Other ultrastructural changes are evident as well. These histologic changes may reflect nonsynchronous cellular activities which in turn interfere with oviductal and endometrial functions before implantation. PMID- 3860035 TI - Culture factors affecting the success rate of in vitro fertilization and embryo transfer. AB - The development of one-cell mouse zygotes to the blastocyst stage in vitro has been used as a quality control for the media and handling procedures employed for human in vitro fertilization and embryo transfer (IVF/ET). One-cell mouse zygotes were placed in culture in medium containing bovine serum albumin. Aliquots of the same batch of medium containing female patients' homologous serum were used for the fertilization and culture of human oocytes. The following procedures were associated with high rates of mouse embryo development and human pregnancies following IVF/ET: adequate gassing and equilibration of the medium, double rinsing of pipets and catheters used to handle embryos, use of a HEPES-buffered medium for manipulating embryos in the absence of an atmosphere containing 5% CO2, control of excessive temperature in the vicinity of the embryos, and ET using medium containing 50% patient's serum. The institution of these procedures gave more consistent pregnancy rates. However, there was no obvious association between fertilization and cleavage of human oocytes and the quality of the medium ascertained by the mouse embryo development test. In a continuing trial, we are comparing two culture media (modified Tyrode's and a medium formulated on the composition of human fallopian tube fluid [HTF]) and two culture techniques (culture in medium under oil in petri dishes and in loosely capped tubes). Significantly more mouse zygotes developed in HTF medium compared to Tyrode's medium. In a randomized 2 X 2 factorial trial with human IVF/ET, the highest pregnancy rate occurred when fertilization and culture were carried out in HTF medium under oil, but numbers are not yet sufficient to show any statistical difference between treatments. PMID- 3860036 TI - The origin and distribution of cortical granules in human oocytes with reference to Golgi, nucleolar, and microfilament activity. AB - The origin and distribution of cortical granules were investigated in human preovulatory oocytes at various phases of maturation. Twenty-five oocytes obtained from unstimulated small antral follicles and from stimulated large antral and mature follicles were examined by transmission electron microscopy. Ovarian stimulation in women was accomplished by administering Clomid followed by hMG or hCG or both. Small antral follicle oocytes were dissected from ovarian biopsies, while the other oocytes were recovered by laparoscopy. Some oocytes were allowed to mature in Ham's F-10 or Whittingham's T-6 media before routine fixation in glutaraldehyde/osmium. Cortical granules originate from typical, hypertrophic Golgi complexes during early maturation and continue till its completion. Evidently there are two waves of cortical granule synthesis, the first more prolific than the second. The first occurred in small antral follicle oocytes, when there was a peak in Golgi activity, and the second was observed at the germinal vesicle stage, particularly at the onset of resumption of meiosis. Golgi complexes became progressively scarce as oocytes completed first maturation. Golgi membranes were also involved in the formation of lysosomes. A well-defined band of microfilaments was detected in small antral follicle oocytes which seemed to prevent the cortical granules, organized in a single layer, from migrating to the periphery. This band gradually became disorganized at the germinal vesicle stage as oocytes resumed meiosis, when cortical granules were apparently migrating to the surface. Metaphase I and mature oocytes had one to three discontinuous layers of cortical granules beneath the oolemma. The general organization of oocytes was also investigated and the roles of the nucleolus and endoplasmic reticulum in relation to Golgi activity and cell secretion were discussed. PMID- 3860037 TI - Successful use of in vitro fertilization for patients with persisting low-quality semen. PMID- 3860038 TI - Absence of sperm antibodies in follicular fluid of women having sperm agglutinins in serum. PMID- 3860039 TI - An economic and ethical way to introduce in vitro fertilization to infertility practice, and findings related to postcoital sperm/mucus penetration in isolated tubal, "cervical," and unexplained infertility. PMID- 3860040 TI - Ultrastructure of maturing human oocytes. PMID- 3860041 TI - Impairment of human embryo development after abnormal in vitro fertilization. PMID- 3860042 TI - Factors influencing human embryonic development in vitro. PMID- 3860043 TI - Embryo transfer. PMID- 3860044 TI - Is the short luteal phase a defective luteal phase? PMID- 3860045 TI - Pregnancy proteins in the endometrium after follicle aspiration for in vitro fertilization. AB - Placental proteins PP10, PP12, and PP14 and pregnancy-associated plasma protein A (PAPP-A) and relaxin (RX) were studied by the immunoperoxidase method in the uterine mucosa at the time of embryo replacement in 18 women for whom no embryo was available to be replaced. All subjects had received 17 alpha hydroxyprogesterone caproate at the time of follicle aspiration, which had been performed 36 hours after preovulatory administration of hCG. The time between follicle aspiration and endometrial biopsy varied from 26 to 216 hours. PP10 was not detected in any specimen. RX was found in 17 of 18, PP12 in 15 of 18, PAPP-A in 14 of 18, and PP14 in 6 of 18 specimens. In a normal cycle, PP12, PAPP-A and RX appear in the endometrium on the fourth day post ovulation. In the conditions described above the same proteins could be seen in the endometrium sooner after oocyte retrieval. This may be due to a strong progesterone effect after multiple follicle aspirations and treatment with 17 alpha-hydroxyprogesterone. The significance of the occurrence of these pregnancy proteins as well as that of the morphologic and biochemical maturity of the endometrium at the time of embryo transfer are discussed. PMID- 3860046 TI - Ultrastructure of a two-cell human embryo fertilized in vivo. PMID- 3860047 TI - Monitoring embryos after in vitro fertilization using early pregnancy factor. PMID- 3860048 TI - Maternal age: a major factor affecting the prospects and outcome of pregnancy. PMID- 3860049 TI - Chromosomal preparations from human oocytes. PMID- 3860050 TI - Chromosome studies of early human embryos: proof of fertilization in uncleaved human oocytes. PMID- 3860051 TI - Genetic aspects of in vitro fertilization. PMID- 3860052 TI - The selection of couples for in vitro fertilization and embryo replacement. PMID- 3860053 TI - Psychological interviews in screening couples undergoing in vitro fertilization. PMID- 3860054 TI - The impact of in vitro fertilization on tubal surgery for complete fimbrial obstruction. PMID- 3860055 TI - Cryopreservation of human embryos. AB - Studies on the cryopreservation of ninety-seven 4-cell and 8-cell human embryos indicate that morphologic survival can be achieved by means of two different cryoprotectants and two different freezing procedures. To date, pregnancies can be achieved after freezing and thawing of 8-cell human embryos cooled at 0.3 degree C per minute to -80 degrees C in the presence of 1.5 molar dimethyl sulfoxide (DMSO) and thawed at +8 degrees C per minute from -80 degrees C to +4 degrees C. By this procedure, 27 of 47 (57%) embryos frozen survived with 50% or more of their blastomeres intact. The transfer of these 27 embryos to 22 patients resulted in five pregnancies (22%). Morphologic survival of 4-cell and 8-cell human embryos after freezing and thawing is not affected by slight irregularities in blastomere size or the presence of small cytoplasmic fragments. Light and electron microscopic examination of fixed specimens indicates a good correlation between the appearance of frozen-thawed embryos at the dissecting microscope level and the extent of cryoinjury. PMID- 3860056 TI - Monitoring the LH surge by ultrarapid and highly sensitive immunofluorometric assay. AB - A novel time-resolved immunofluorometric method is described for the estimation of human luteinizing hormone (LH) in serum and urine. The method utilizes two monoclonal antibodies: one reacting with the beta-subunit is adsorbed to the wall of a microtiter well, and the other is labeled with a fluorescent europium chelate and reacts with the alpha-subunit. The method is ultrarapid (15-30 min) and highly sensitive (1 IU/L). A large linear measuring range allows measurement of LH levels from 1 to 250 IU/L. For the monitoring of urinary LH, IFMA gives the same information as the Hi-Gonavis assay, but it has the advantages of greater sensitivity and a shorter assay time. For the determination of serum LH levels, an acceptable correlation was observed between radioimmunoassay and IFMA. Furthermore, IFMA has a greater sensitivity, and is more rapid and not dependent on the handling of radioactive materials. PMID- 3860057 TI - Helsinki statement on human in vitro fertilization. PMID- 3860058 TI - Historical aspects of the ethics of in vitro fertilization. PMID- 3860059 TI - Ethics of in vitro fertilization: 1984. PMID- 3860060 TI - Extragenomic regulation and autonomous expression of a developmental program in the early mammalian embryo. PMID- 3860061 TI - Bioethical decision-making: which path to choose? PMID- 3860062 TI - Ethical and moral issues of in vitro fertilization. PMID- 3860063 TI - The ethics of the reproduction revolution. PMID- 3860064 TI - A practical ethical framework for in vitro fertilization and related reproductive interventions. PMID- 3860065 TI - Jewish and Moslem aspects of in vitro fertilization and embryo transfer. PMID- 3860067 TI - Experimental assessments and clinical applications of conditioned food aversions. PMID- 3860066 TI - Polyspermy in in vitro fertilization of human oocytes: frequency and possible causes. AB - In an IVF program a total of 585 oocytes (180 patients) were examined for the presence of pronuclei 16 to 20 hours after the addition of spermatozoa. The overall fertilization rate was 71%, and in 58 (10%) of the fertilized oocytes, three or more pronuclei, indicating a failure of the block to polyspermy, could be observed. The frequency of polyspermy was related to the maturity of the oocyte, determined according to morphologic criteria. Immature oocytes showed a higher percentage of polyspermic fertilization (32%) compared to that of mature oocytes (6%). Preincubation of oocytes (for 0.5-1.5, 2-4, and 5-8 hours) prior to the addition of spermatozoa increased the fertilization rate (to 67%, 70%, and 83%, respectively). The polyspermy rate, however, was not significantly different between the various preincubation intervals (13%, 14%, and 19%, respectively). The polyspermy rate was affected by the number of spermatozoa used for in vitro fertilization. Insemination with 0.5-0.8, 1.0, or 1.5-2.0 X 10(6) spermatozoa/oocyte resulted in a polyspermy rate of 6%, 20%, and 32%, respectively. The appearance of polyspermic fertilization was not related to the age of the patient (which ranged from 20 to 45 years) nor to the method of ovarian stimulation (clomiphene, hMG, or clomiphene/hMG). Because of the high incidence of polyspermy under in vitro conditions it seems to be important to routinely examine the oocytes in the pronuclear stage. Reduction of the number of spermatozoa used for in vitro fertilization and the exact timing of insemination according to the maturity of the oocyte might reduce the occurrence of polyspermic fertilization. PMID- 3860068 TI - Neural mediation of conditioned food aversions. AB - The above discussion is only a brief review of what is known about the neural mediation of conditioned food aversions. Although several other approaches were not mentioned (e.g. biochemical studies), one can still appreciate the value of the aversion paradigm for providing important information about neural mechanisms in learning and memory. A theoretical approach that may be valuable in understanding brain function in conditioned food aversion data is Hughlings Jackson's hierarchical notions of nervous organization. Hedonic responses to food stimuli appear to be brainstem reflexes. On top of these are rostral brain structures that add greater complexity to the consummatory behavior of the organism. An important aspect of this complexity is reflected in an animal's ability to form conditioned food aversions, a process undoubtedly tied intimately to particular neural mechanisms. PMID- 3860069 TI - Toxiphobia, "social reinforcement," comparative psychology, and Patrick J. Capretta. PMID- 3860070 TI - A natural toxic defense system: cardenolides in butterflies versus birds. AB - We have verified that wild birds can become conditioned to reject naturally toxic insects either visually (experiment 1) or by taste (experiment 2). We have also verified, however, that unconditioned taste rejection of noxious chemicals by wild birds also occurs (experiment 3). Such unconditioned responses to the aposematic visual and taste cues of many insects, in fact, often appear to be as important as, or more important than, conditioned responses. In a large number of laboratory feeding experiments with wild birds as predators of aposematic insects, initial and/or long-term rejection occurs without prior laboratory conditioning experience. Although in some experiments the birds may have previously been exposed to (and therefore perhaps conditioned by) the aposematic prey in the wild, other experiments have used naive birds or insects whose ranges do not overlap those of the birds. Wiklund and Jarvi, for example, tested the response of 47 naive hand-raised birds of four species to five aposematic insect species, and found that 69/136 (51%) insects were rejected visually without even tasting, while 63 were tasted and then rejected. Only four of the insects were actually ingested. Similarly, in Bowers' study of the response of Massachusetts blue jays to aposematic western U.S. Euphydryas butterflies, several blue jays consistently rejected the butterflies visually or by taste without having eaten any. While these studies were not designed to separate neophobic effects from innate visual and/or taste aversions, they do differentiate between conditioned and unconditioned responses. Since both conditioned and unconditioned rejections can be demonstrated in the lab by insectivorous birds, and our available field evidence does not yet let us distinguish the mechanisms behind the observed patterns, our initial question, of the relative importance of conditioned versus unconditioned rejection mechanisms in different natural situations, is not yet answerable. The most important requirement of a food-rejection strategy is that it prevents both poisoning and starvation. We have shown, however, that rejection of a noxious insect by a bird can take place at four distinct levels (visual, non destructive taste sampling, destructive taste sampling, or post-ingestional physiological rejection), the first three of which may be either unconditioned or conditioned by a physiological reaction to ingestion.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3860071 TI - The role of Pavlovian conditioning in the acquisition of food likes and dislikes. PMID- 3860072 TI - Foraging, memory, and constraints on learning. PMID- 3860073 TI - Food-conditioned eating preferences and aversions with interoceptive elements: conditioned appetites and satieties. PMID- 3860074 TI - Conditioned taste aversions and immunopharmacology. PMID- 3860075 TI - Conditioned food aversion learning in humans. PMID- 3860076 TI - Predation control using conditioned food aversion methodology: theory, practice, and implications. PMID- 3860077 TI - Aversion therapy in the treatment of alcoholism: success and failure. PMID- 3860078 TI - Contextual influences on conditioned taste aversions in the developing rat. PMID- 3860079 TI - Cue-consequence specificity and long-delay learning revisited. PMID- 3860080 TI - A general theory of aversion learning. PMID- 3860081 TI - Sensory physiology of taste and smell discriminations using conditioned food aversion methodology. PMID- 3860082 TI - Memory dysfunctions: an integration of animal and human research from preclinical and clinical perspectives. PMID- 3860083 TI - Distributed models of cognitive processes. Applications to learning and memory. PMID- 3860085 TI - Strategies for the development of animal models of human memory impairments. PMID- 3860084 TI - Analyses of global memory impairments of different etiologies. PMID- 3860086 TI - Correspondence between humans and animals in coding of temporal attributes: role of hippocampus and prefrontal cortex. PMID- 3860087 TI - Arginine vasopressin, stress, and memory. AB - Arginine vasopressin (AVP) has been shown to have several non-renal actions including the potentiation of learned avoidance behavior in rats and improvement in cognitive functioning in humans. Research in our laboratory has confirmed these behavioral effects in rats using both peripheral and central injection of AVP. We have begun to examine the physiological basis for these effects. Peripheral administration of a vasopressor AVP antagonist reversed the prolongation of extinction produced by peripherally administered AVP in both active and passive avoidance, but also reversed the aversive unconditioned effects of AVP. However, central administration of the vasopressor AVP antagonist reversed peripheral effects of AVP only at doses shown to act peripherally to reverse vasopressor effects of AVP. An osmotic stress in doses known to liberate endogenous AVP mimicked the behavioral effects of exogenously administered AVP, and this stress effect was reversed by the AVP antagonist. These results support our hypothesis of separate but parallel AVP systems in the pituitary and brain with a role in behavioral adaptation to certain types of stress. PMID- 3860088 TI - A critical review of the role of the cholinergic system in human memory and cognition. PMID- 3860089 TI - Changes in cerebrospinal fluid associated with dementia. PMID- 3860091 TI - Analysis of age-related impairments in learning and memory in rodent models. PMID- 3860090 TI - Electrophysiological markers of aging and memory loss in rats. PMID- 3860092 TI - Animal behavioral models in the discovery of compounds to treat memory dysfunction. PMID- 3860093 TI - Memory dysfunction and vigilance: neurophysiological and psychopharmacological aspects. AB - Human brain function as measured by the computer-assisted spectral analyzed electroencephalogram (EEG) shows significant alterations in normal and pathological aging characterized by an increase of delta and theta activity and by a decrease of alpha and alpha-adjacent beta activity as well as by a slowing of the dominant frequency. These changes are indicative of deficits in the vigilance-regulatory systems. By the term vigilance we understand the availability and grade of organization of man's adaptive behavior, which in turn is dependent of the dynamic state of the total neural activity. An impairment of vigilance was found to be significantly correlated with the clinical symptomatology of the organic brain syndrome (OBS) as well as with mnestic performance deficits. Elderly subjects with bad memory exhibit slower activity and less alpha and alpha-adjacent beta activity than those with good memory. This was found to be true for both the time of acquisition and recall. Antihypoxidotic/nootropic drugs, such as the ergotalkaloids dihydroergotoxine and nicergoline, vincamine-alkaloids, piracetam, aniracetam, etiracetam, piridoxilate and others, induce interestingly just oppositional changes in human brain function, thereby improving vigilance. Other methods for proving therapeutic efficacy in man, like experimentally induced hypoxic hypoxidosis and the reversible alcoholic OBS, are discussed. PMID- 3860094 TI - Priming of old and new knowledge in amnesic patients and normal subjects. PMID- 3860095 TI - Searching for models of Alzheimer's disease: a comparison of four amnestic treatments in two behavioral tasks. PMID- 3860096 TI - Arginine vasopressin inoculates against age-related changes in temporal memory. PMID- 3860097 TI - The influence of sex steroids on human nonverbal memory processes. PMID- 3860098 TI - An automatic encoding deficit in the amnesia of Korsakoff's syndrome. PMID- 3860100 TI - The inaccessible, but intact engram: a challenge for animal models of memory dysfunction. PMID- 3860099 TI - Auditory emotional memories: establishment by projections from the medial geniculate nucleus to the posterior neostriatum and/or dorsal amygdala. PMID- 3860102 TI - Simple delayed discrimination in the rat: a behavioral baseline. PMID- 3860101 TI - Neurobehavioral effects of chronic choline-containing diets on the adult and aging C57BL/6NNIA mouse brain. PMID- 3860103 TI - The effects of aniracetam on primate behavior and EEG. PMID- 3860104 TI - Family member reports in geriatric psychopharmacology. PMID- 3860105 TI - Classical conditioning of the nictitating membrane response in aged rabbits. AB - There was no difference between old and young animals in acquisition of the conditioned response in the delay conditioning paradigm, nor were there any age related differences in generalization to the tone CS or in sensitivity to the tone CS or eye shock UCS. In the trace conditioning paradigm, however, old animals acquired the conditioned response significantly slower than young animals. Because the same stimulus parameters and the same responses were used in both paradigms, it is unlikely that the age-related differences in trace conditioning were due to differences in stimulus sensitivity, motor deficits, motivation, or fatigue. Rather, the differences appear due to associative factors. The increased demands of the trace paradigm, which includes a within trial memory component, may be a critical factor in the age related disruption. Moreover, recent data suggest that trace and delay conditioning may involve different neuronal systems (e.g., hippocampus appears necessary for trace but not delay conditioning) and these systems may be differentially effected by the aging process. PMID- 3860106 TI - The effects of aniracetam (Ro 13-5057) on the enhancement and protection of memory. PMID- 3860107 TI - Amnesia in humans and animals after ischemic cerebral injury. PMID- 3860108 TI - An electrophysiological method for examining the effects of potential therapeutic agents on memory function. PMID- 3860109 TI - The effect of aging on learning curves. PMID- 3860110 TI - Uncovering malingered amnesia. PMID- 3860111 TI - Pharmacological effect of phosphatidylserine on age-dependent memory dysfunction. PMID- 3860112 TI - Normal learning set and facilitation of reversal learning in rats with combined fornix-amygdala lesions: implications for preserved learning abilities in amnesia. PMID- 3860113 TI - Animal and human memory dysfunctions associated with aging, cholinergic lesions, and senile dementia. PMID- 3860114 TI - Lesions in nucleus basalis magnocellularis and medial septal area of rats produce similar memory impairments in appetitive and non-appetitive behavioral tasks. PMID- 3860115 TI - Intracerebral injections of AF64A: an animal model of Alzheimer's disease? PMID- 3860116 TI - The avoidance of age differences in single-trial free recall. PMID- 3860118 TI - Memory complaints in depressed geriatric inpatients. PMID- 3860117 TI - Morphine-induced disruption of behavioral but not hippocampal conditioned responses during appetitive classical conditioning. PMID- 3860119 TI - Effects of aniracetam upon the delayed matching-to-sample performance of monkeys and pigeons. PMID- 3860120 TI - Dissociations among processes in remote memory. PMID- 3860121 TI - Brain transplants: can they restore single unit activity in the hippocampus? PMID- 3860122 TI - Different memory systems underlying acquisition of procedural and declarative knowledge. PMID- 3860123 TI - GABA effect on conditioned reflex responses in teleost. PMID- 3860125 TI - Fifth Cooley's Anemia Symposium. PMID- 3860124 TI - A disconnection analysis of amnesia. PMID- 3860126 TI - Observations on oxygen delivery, methemoglobinemia, and arterial oxygenation in patients with beta-thalassemia. PMID- 3860127 TI - Current therapy and new approaches to the treatment of thalassemia major. PMID- 3860129 TI - A second look at the distribution and frequency of the hemoglobinopathies. PMID- 3860128 TI - Current strategies in the management of Cooley's anemia. PMID- 3860130 TI - Treatment of iron overload in Cooley's anemia. PMID- 3860131 TI - Molecular pathology of alpha-thalassemia. AB - The different classes of mutations found in the alpha- and beta-thalassemia syndromes are summarized in FIGURE 5. Mutations affecting almost every stage of globin gene expression have been described. The only lesion not yet characterized is one affecting enhancing sequences, although such sequences have not yet been identified in the globin gene system. The clinically important alpha-thalassemias are the deletion types, which occur with much higher frequency than the nondeletion lesions. In contrast, apart from one deletion beta-thalassemia lesion found in Pakistan, all the clinically significant beta-thalassemia lesions are not caused by gene deletion. The common beta-thalassemia lesions in the Mediterranean region and Asia are caused by defective mRNA synthesis, processing, or translation. Why deletion lesions predominate in the alpha-thalassemias and nondeletion ones in the beta-thalassemias remains an enigma. PMID- 3860132 TI - The effect of subcutaneous deferoxamine on the cardiac profile of thalassemia major: a five-year study. PMID- 3860133 TI - Combined subcutaneous and high-dose intravenous deferoxamine therapy of thalassemia. AB - Although the preliminary findings are encouraging, to assess the effectiveness of the SHYD program on the long-term course of thalassemia, a larger patient population and longer treatment and follow-up period are needed. The presence of cardiac abnormalities in patients in Group I suggests that to prevent heart damage in thalassemia, it may be necessary to start the HTP and effective chelation therapy at a very young age, realizing that the amount of iron removed will be small. The finding that two of the four patients who survived to receive the largest amount of Fe/kg have intact spleens and another had splenectomy at age 24 suggests that, in these patients, the spleen may have had a protective role for the heart. If this observation is confirmed, it would provide evidence that removal of the spleen may adversely affect the long-term course of patients with thalassemia. Six years' experience with the SHYD program has not provided evidence for significant acute or chronic toxicity. This suggests that it might be safe to administer the i.v. treatments at home, a program that is anticipated for the future, as it would significantly reduce cost and possibly be more convenient. PMID- 3860134 TI - Improved oxygen delivery to tissues and iron chelator transport through the use of lysed and resealed red blood cells: a new perspective on Cooley's anemia therapy. PMID- 3860135 TI - A psychosocial needs assessment of patients with homozygous beta-thalassemia. PMID- 3860136 TI - Psychosocial impacts on a thalassemic patient's life. PMID- 3860137 TI - Thalassemic children's understanding of illness: a study of cognitive and emotional factors. AB - A study that explored children's understanding of the body and illness was conducted with 23 thalassemic outpatients and 27 healthy controls. The findings were supportive of a developmental progression in children's understanding that is reflective of their underlying cognitive maturity. Behavioral compliance was related to psychiatric adjustment. There was a trend toward poorer psychiatric adjustment in children with impaired understanding of their illness. These findings hold implications for both educational and psychiatric intervention with this group. Optimal health care of chronically ill children requires knowledge of the developmental course and interplay of children's cognition and their familial and personal adjustment. PMID- 3860138 TI - The hemoglobin content and concentration of single fetal erythrocytes obtained by placentocentesis from mothers with heterozygous beta-thalassemia. PMID- 3860140 TI - Toward providing parents the option of avoiding the birth of the first child with Cooley's anemia: response to hemoglobinopathy screening and counseling during pregnancy. AB - Will the development of safe, accurate prenatal diagnosis for Cooley's anemia result in a reduction in the unwanted birth of children with Cooley's anemia in the United States? Since detection of couples at risk only through the birth of an affected child will lead to a minimal reduction in the incidence of the disease, carrier screening will be necessary. A pilot project of prenatal hemoglobinopathy screening is being conducted in Rochester, New York, to answer the question "Should hemoglobinopathy carrier screening and genetic counseling of positives be part of routine prenatal care?" In the first 27 months of this study, 6,641 unselected pregnant women have been screened on the first prenatal visit, regardless of race and ethnic origin. Of these, 304 have been positive for some type of hemoglobinopathy. Of the 293 analyzed here, the proportion coming for counseling was 61% of the total group and 77% of the thalassemia trait subgroup. Of this number, the proportion wanting their mate tested was 98% of the total group and 100% of the thalassemia trait subgroup. The proportion of those counseled whose mate was actually tested was 60% for the total group and 70% for the thalassemia trait subgroup. The proportion of at risk couples wanting amniocentesis (mostly for detection of sickle cell disease) was 61%. We conclude that, when comprehensive hemoglobinopathy screening is incorporated into routine prenatal screening, the majority of positive women make an extra visit to receive an explanation, nearly all women coming for counseling want their mate tested, the majority of mates come for testing, and the majority of couples at risk want amniocentesis. Further, pregnant women with beta-thalassemia trait may be more inclined to act upon identification as a carrier than are positive women at large. PMID- 3860139 TI - Antenatal diagnosis of thalassemia major in Sardinia. AB - In this report, we summarized our experience, carried out in Sardinia, with antenatal diagnosis in one thousand pregnancies in which the fetus was at risk for homozygous beta-thalassemia. In the majority of these cases, the thalassemia lesion segregating in the family was the nonsense mutation at the codon corresponding to amino-acid 39. At the outset (976 cases) we used globin chain synthesis analysis by column chromatography on fetal blood obtained by placental aspiration, and recently (24 cases) we employed the synthetic oligonucleotide method on amniocyte DNA. Apart from 126 pregnancies still in progress, in all the other cases the diagnosis has been confirmed. In the majority of the cases (99%), we obtained sufficient fetal blood for the analysis. The fetal mortality associated with placental aspiration was 6.1%. The biochemical analysis gave reliable results. We had two misdiagnoses (0.2%): one due to a nonglobin protein comigrating with the beta chains and the other for a misclassification of the type of thalassemia segregating in the family. The oligonucleotide method gave clear-cut results in all the cases tested. The method was sensitive enough to detect the mutation directly in the DNA isolated from 20-25 ml of amniotic fluid in 75% of the pregnancies tested. In one case, we successfully employed this method for the analysis of the DNA isolated from chorionic villi. The oligonucleotide method seems to be the best procedure for monitoring the pregnancies at risk for beta-thalassemia in places where one or a few beta thalassemia lesions are prevalent. PMID- 3860141 TI - Hematology of a murine beta-thalassemia: a longitudinal study. AB - Mice homozygous for a spontaneous mutation, in which the beta-major globin gene is deleted, have clinical symptoms of beta-thalassemia. These mice have a hypocellular, hypochromic, microcytic anemia that becomes more severe with increasing age. The defective red cell morphology, decreased osmotic fragility of erythrocytes and shortened red cell life span found in beta-thalassemic mice are similar to those observed in human beta-thalassemia. Synthesis of beta-globin is depressed but not as much as might be expected because the expression of the beta minor globin gene is enhanced to encode two to three times more globin than in normal mice. Splenomegaly, an enlarged pool of stem cells for erythropoiesis, and iron overloading occur in older mice. The fact that these mice remain moderately healthy makes them a very suitable animal model in which to develop and test alternative techniques of gene therapy that could be successfully applied to the treatment of human thalassemia. Homozygous beta-thalassemic mice have large deposits of iron in their tissues, which might make these mice also useful for in vivo tests of the effectiveness and possible long-term side effects of newly developed iron chelators. PMID- 3860142 TI - Alterations in membrane protein and phosphorylation pattern in beta-thalassemic red blood cells. AB - The architecture and phosphorylation pattern of RBC membranes were studied in intact RBC and ghosts of patients with beta-thalassemia intermedia. Electron microscopic studies showed severe morphological alterations in ghosts from spx thalassemic patients. The polypeptide pattern obtained on SDS-PAGE revealed a fourfold increase in globin content of ghosts from spx patients. In addition, multiple protein bands were detected migrating below band 4.2, accompanied by alterations in the band 3 zone. When membrane protein phosphorylation was examined by SDS-PAGE and auto-radiography following incubation of intact RBC with [32P]Pi, a reduced labeling of the normally phosphorylated polypeptides was found in the thalassemic RBC. In addition, new phosphorylated peptides appeared in the region of band 3 and below band 4. On the other hand, phosphorylation of isolated membranes with [gamma-32P]ATP showed no major differences in the labeling of the major phosphorylated proteins. An analysis of the initial rate of spectrin-band 2.1 phosphorylation obtained by counting the excised bands from the SDS gels showed that there was a twofold increase in spectrin-band 2.1-phosphorylation rate catalyzed by cAMP-dependent protein-kinase in the thalassemic ghosts, although no differences were found in the extent of spectrin phosphorability. The results are consistent with major changes in membrane protein disposition in thalassemic RBC, most probably caused by the precipitation of excess globin chains. PMID- 3860143 TI - Thalassemia in China. PMID- 3860144 TI - Macromolecules as drugs and as carriers for biologically active materials. PMID- 3860145 TI - Synthetic polymers as drugs. AB - Biologically active compounds have been incorporated into synthetic polymers. Bithionol, a well-known and potent antibacterial agent, has been used as bisphenol monomers for polyesters, polyphosphates, and phosphonates; the bischloroformate of bithionol has been converted into copolycarbonates and polyurethanes. The copolycarbonates of bithionol, optimally designed polymer structures with poly(ethylene oxide) glycols as the other comonomer, have been hydrolyzed under physiological conditions at a degradation rate of about 1% per day. Primaquine, an antimalarial, and amantadine, an antiviral agent, when reacted with isocyanates gave polymeric biurets as do other primary aliphatic amines. Primaquine also underwent nucleophilic substitution reactions on polyepichlorohydrin. 3-Vinyl-, 4-vinyl-, and 5-vinylsalicylic acids have been synthesized, polymerized, and copolymerized to polymeric antibacterials. Copolymers of vinylsalicylic acid can be selective in their activity, depending on the comonomer. Selectivity can also be achieved by derivation of the poly(vinylsalicylic acid). PMID- 3860146 TI - Some biologically active poly(thiosemicarbazides). PMID- 3860147 TI - Biologically active organotin polymers. AB - The synthesis, structure, and properties of polymers in which tin is chemically anchored as tributyltin carboxylate are discussed. A base copolymer with anhydride or carboxyl groups is partially esterified with tributyltin oxide; the free carboxyls are then reacted with diepoxides to yield cross-linked controlled release formulations. The network structure and the separation length and type of epoxide cross-links were altered by changing the degree of esterification of the base polymer, the structure of epoxy monomer, and catalyst. NMR evidence established that rapid exchange exists in tributyltin carboxylates; as a consequence even their interfacial reaction with chloride is fast, producing tributyltin chloride. Biotoxicity data obtained by studying the inhibition of marine and soil bacteria reveal that the type and degree of cross-linking have a significant effect on the size of inhibition zones. Tests in the ocean confirm effective biological activity against marine fouling organisms. Structural correlations with dynamic mechanical and dielectric properties suggest a viable program to investigate the dependence of tributyltin release on polymer matrix properties. PMID- 3860148 TI - A new simple controlled release delivery system. AB - The chemical pulping of wood without subsequent drying affords low-cost hollow fibers with microporous multilamellar cell walls saturated with water. Simple impregnation of these never-dried pulp fibers with solutions of biologically active chemicals followed by drying yields collapsed cellulose ribbons containing entrapped impregnant. The release characteristics of exemplary composites containing an analgesic (acetylsalicylic acid), a growth stimulant (alpha naphthylacetic acid), or a herbicide (2,4-dichlorophenoxyacetic acid) are reported both for in vitro and in vivo evaluations. PMID- 3860149 TI - Some biologically active copolymers of maleic anhydride. PMID- 3860151 TI - Computer simulations of the conformations of catecholamine derivatives. PMID- 3860150 TI - Macrophage activation and antitumor activity of cyclohexyl-1,3-dioxepin and 4 methyl-2-pentonyl maleic anhydride copolymers. PMID- 3860152 TI - Antibodies as carriers of cancer chemotherapeutic agents. PMID- 3860153 TI - The use of immunotoxins containing ricin A or B chains to kill neoplastic B cells. PMID- 3860154 TI - pH sensitization of phospholipid vesicles via complexation with synthetic poly(carboxylic acid)s. PMID- 3860155 TI - Progress in model studies of cellular uptake. PMID- 3860156 TI - The role of cross-links, entanglements, and relaxations of the macromolecular carrier in the diffusional release of biologically active materials. Conceptual and scaling relationships. PMID- 3860158 TI - Preparation and characterization of polymerized liposomes. AB - Each of these classes of polymerizable lipids offers useful approaches to the preparation of polymerized liposomes. The lipid diacetylenes can be very photosensitive and yield highly colored rigid photopolymers. The reaction is sensitive to lipid structure, membrane packing, and temperature; however, the reaction is difficult to drive to completion. High polymer yields (greater than 90%) and a high degree of polymerization (500) are realized with the monofunctional methacryloyl lipids 4 and 5. These liposomes are characterized by multiple polymer chains per liposome and a moderate reduction in membrane permeability to glucose. Further decreases in membrane permeability can be achieved with dienoyl lipids, e.g., 6, which can be cross-linked as well as highly polymerized (greater than 95%). Progress in synthesis of polymerizable lipids has been rapid, and the initial characterization of some of the reported materials provides guidance for future synthetic endeavors. PMID- 3860157 TI - Polymeric phospholipids as new biomaterials. AB - Phospholipid polymers form a new class of biomaterials with many potential applications in medicine and research. The development of these compounds is based upon the mimicry of cell surfaces and reflects our current understanding of the properties of membrane lipids. Physicochemical characterization of the monomeric, diacetylenic phospholipids illustrates the similarities to naturally occurring lipids, similarities that are confirmed by the capacity to enrich the membranes of A. laidlawii to the level of 90% diacetylenic lipid. Polymerization of diacetylenic phospholipids is easily attained by irradiation and produces a stable, crystalline array. The ability to link membrane lipids covalently permits the isothermal restriction in their motion, and is useful in basic studies of biomembranes. The thromboresistance of polymeric phosphatidylcholines in vitro may be a consequence of the inability of phosphatidylcholines to participate in coagulation. The restricted lateral diffusion of proteins along a polymeric lattice will also inhibit the formation of coagulation complexes. Existing polymers may be altered by a coating of polymeric lipid obtained by the Langmuir Blodgett method. Polymerized vesicles display significant reductions in permeability and aggregation. Entrapment of soluble materials and reconstitution of membrane proteins may be exploited in controlled and site-directed drug delivery. Polymerization of cells in situ produces "cellular capsules" with entrapped membrane and cellular components. Polymeric hemosomes are capable of gas transport and may function as red cell surrogates. The hybrid qualities of biomembranes (polar surfaces, nonthrombogenic, low antigenic potential, and low permeability) and synthetic polymers (chemical and physical stability) suggest that polymeric phosphatidylcholines may serve as models for biomaterials design. PMID- 3860160 TI - Molecular recognition, catalysis, and transport in polymerized surfactant vesicles. PMID- 3860159 TI - Polymerized phosphatidylcholine vesicles as drug carriers. AB - Polymerized ammonium and phosphatidylcholine vesicles have been synthesized via poly(methacrylate) and poly(disulfide) formation. A functionalized polymeric liposome has also been synthesized and effectively conjugated with alpha chymotrypsin. Vesicles derived from 2 have been studied most extensively as potential carriers of drugs. The are extremely stable toward physical perturbation and exposure to organic solvents or detergents, and should be able to maintain their integrity and homogeneity during pharmaceutical manufacturing procedures, including lyophilization. The fact that they retain substantial quantities of lipophilic substances in the presence of detergent concentrations in excess of those found in the upper gastrointestinal tract suggests that they should be able to carry and selectively release lipophilic drugs in the lower reaches of the GI tract. Moreover, the apparent lack of acute toxicity of these vesicles, as indicated by intravenous administration to outbred mice, further suggests that such photopolymerized liposomes may represent a unique and valuable carrier for the controlled delivery of certain types of therapeutic agents, especially by the oral route. PMID- 3860161 TI - Phospholipid vesicle targeting using synthetic glycolipid and other determinants. AB - The interactions of carbohydrate-modified phospholipid vesicles with various isolated cell types in vitro have been studied to establish a better basis for understanding the mechanisms for recognition and transport of such modified vesicles in vivo. The physical basis for the use of perturbed angular correlation spectroscopy for the measurement of phospholipid vesicle integrity, and the kinetics of uptake of modified phospholipid vesicles by mouse peritoneal macrophage are first reviewed. The effects of variation of the chemical structure of the determinant and other factors indicate that the rate of uptake of cationic vesicles by mouse peritoneal macrophage is directly related to the distance that an amine group can be extended beyond the vesicle surface, and not, for example, to the stereochemistry of the carbohydrate determinant. The uptake mechanism appears to involve generalized phagocytosis and not a receptor-mediated mechanism, or an opsonization process that is not stereospecific. PMID- 3860163 TI - The delivery of phototoxic drugs to selected cells. PMID- 3860162 TI - Selective toxicity and enhanced therapeutic index of liposomal polyene antibiotics in systemic fungal infections. AB - Incorporation of the polyene antibiotic amphotericin B (AMB) in liposomes results in a marked reduction in drug toxicity with no loss of antifungal potency. Nephrotoxicity, the dose-limiting side effect of AMB, is almost abolished when the drug is utilized in a liposomal carrier. Because of reduced toxicity, high doses of liposomal AMB can be used, resulting in superior therapy of systemic fungal infections in mice. The improved therapeutic index of liposomal AMB versus free AMB is also manifest in infected neutropenic animals. The reduced toxicity of liposomal AMB is due to a fundamental alteration in the interaction of the drug with mammalian cell membranes. AMB transfers effectively from donor liposomes to fungal cell walls and membranes and is thus toxic to fungi. By contrast, AMB does not transfer from liposomes to mammalian cells and thus is not toxic to these cells. Thus, the use of liposomal AMB may offer a marked improvement in the therapy of systemic fungal infection in cancer patients and other immunodebilitated individuals. PMID- 3860164 TI - Liposomes as carriers of antiarthritic agents. PMID- 3860165 TI - Synthesis of biodegradable addition polymers. PMID- 3860166 TI - Controlled release of drug model from N-(2-hydroxypropyl)-methacrylamide copolymers. PMID- 3860167 TI - Biotin. PMID- 3860168 TI - Biotin in swine nutrition. AB - For many years, it was believed that supplemental biotin was not needed in swine diets because of the wide distribution of biotin in feedstuffs used in the formulation of swine diets, and because of the known synthesis of biotin by the animal's intestinal microflora. However, interest in biotin nutrition for swine was rekindled in the mid-1970s when several field reports indicated a biotin deficiency in swine that was responsive to biotin supplementation in many cases. Results from university research are accumulating, especially from long-term sow studies (three to four parities), which suggest that supplemental biotin will improve litter size, conception rate, weaning-to-estrus interval, toe lesions, and haircoat condition. Milk biotin concentration and plasma biotin concentration of sows and piglets were also elevated when supplemental biotin was fed. Using presently available feedstuffs and under modern swine production conditions, a marginal biotin deficiency is possible. Swine producers experiencing poor reproductive performance in their sow herds, associated with excessive loss of hair and severe foot lesions, should evaluate the biotin content of their sow diet and consider supplemental biotin. PMID- 3860169 TI - Assessment of biotin status: clinical implications. PMID- 3860170 TI - NMR studies of the exchange of the amide protons of d-biotin and its derivatives. PMID- 3860171 TI - Crystallographic investigations of biotin and carboxybiotin derivatives. AB - The structures of a family of biotin and carboxybiotin derivatives have provided information on the mechanism of biotin action. The ureido moiety of the uncarboxylated cofactor is polarized and able to interact with ions and polar molecules; intermolecular interactions in the biotin derivatives suggest biochemical mechanisms resulting in nucleophilic activation to the enol tautomer. N1' carboxylation of biotin is important not only as a chemical reaction to generate the carboxyl-transferring species, carboxybiotin, but also in acting as a switch to depolarize the ureido carbonyl oxygen, and thereby facilitating interactions with non-polar molecules. The structure of an N1' methoxycarbonyl biotin derivative reveals such an interaction between the carbonyl oxygen, O2', and a neighboring methyl group. A computer-generated space-filing model of the van der Waals contacts involved in this interaction reveals that the methyl group is locked with respect to rotation and thus suggests a structural basis for the stereospecificity observed in the carboxyl-transferring half-reaction. The flexibility of the valeryl side chains in this family of structures provides translocation models in line with magnetic resonance data which indicate that the translocation events involve motions of, at most, 7 A. Our models demonstrate that such motions may be accomplished by simple, observed conformational changes in bonds of the valeryl side chain which locally adjoin the bicyclic ring system. High resolution, low temperature diffraction data will allow visualization of the bonding and lone pair electrons in biotin. These studies will serve to extend and fine-tune our description of the electronic structure of biotin which is currently based on accurate measurements of bond distances and angles. PMID- 3860172 TI - Pyruvate carboxylase: mechanisms of the partial reactions. AB - Data from isotopic exchange studies and from experiments with 32P- and 14C labeled enzyme-bound intermediates support the following description of the first partial reaction: (Formula: see text). From studies of the transfer of the carboxyl-group from ENZ-biotin-CO2- to pyruvate or its analogues we propose that binding of the acceptor substrate induces the translation of carboxybiotin from the first to the second partial reaction site. The studies on the translocation of carboxybiotin can be summarized in the following reaction scheme: (Formula: see text). Where k+3 less than k+1, k-1, k+2 and k-2. Thus, the rate-limited step is governed by k+3 which represents the movement of carboxybiotin from the first subsite to the second. PMID- 3860173 TI - Biotin-binding proteins and biotin transport to oocytes. AB - The eggs of chickens and other birds contain two proteins that bind biotin. Both are homotetrameric proteins of similar size. In contrast to the well characterized egg white avidin, egg yolk biotin-binding protein has a very acidic isoelectric point, binds biotin with lower affinity, and is usually saturated with biotin. Like other egg yolk proteins, biotin-binding protein appears to be synthesized in the liver, transported by the blood stream to the ovary and deposited in the developing oocyte. Since the yolk of a chicken egg contains over 90% of the biotin in an egg and all of the biotin is bound to biotin-binding protein, the function of biotin-binding protein is undoubtedly to transport biotin to the egg for future use by the developing embryo. Avidin is produced by the oviduct and in the egg it is presumed to deter microbial growth around the oocyte by sequestering biotin. Among the eggs examined, those from turkeys have the lowest amount of biotin-binding protein and the highest amount of avidin. Furthermore, the majority of the biotin in turkey eggs can be bound to avidin in the egg white, suggesting a nutritional role for avidin in turkeys. An assay has been developed to conveniently measure apo- and holobiotin-binding proteins. PMID- 3860174 TI - Clinical problems relating to biotin. PMID- 3860175 TI - Biotin holocarboxylase synthetase deficiency. PMID- 3860176 TI - Biotin uptake by isolated rat liver hepatocytes. PMID- 3860177 TI - Receptor affinity chromatography. AB - Insulin receptor was purified in high yield from cultured 3T3-L1 mouse adipocytes using the bifunctional ligand N alpha B1-(biotinyl-epsilon-aminocaproyl)insulin in conjunction with avidin-Sepharose CL-4B. This ligand is 100% competent as insulin and 60% competent as biotin, as measured by competitive binding assays. The procedure requires preliminary removal of biotin-containing proteins on "native" avidin-Sepharose CL-4B. This matrix shows nearly the same biotin-binding characteristics as uncoupled avidin and can be regenerated by washing with 0.02 N HCl, causing only a minor loss of nonexchangeable biotin-binding sites. Insulin receptor is isolated by formation of a complex between the bifunctional ligand and the receptor, and then adsorption to "monomeric" avidin-Sepharose via the biotin moiety. This affinity matrix binds [14C]biotin with a Kd approximately equal to 0.2 microM and has exchangeable/nonexchangeable biotin binding sites in the ratio 9:1. Displacement of homogeneous insulin receptor is achieved by the addition of biotin; the elution is time-dependent, suggesting that it is accomplished by the prevention of rebinding. PMID- 3860178 TI - Requirement for biotin and the function of biotin in cells in culture. AB - The requirement of biotin in the culture medium has been established for HeLa cells, human fibroblasts, baby hamster kidney cells (BHK) as well as polyoma transformed BHK cells. Growth, viability, biotin content and the activities of biotin-dependent enzymes were used as criteria. Cells in culture appear to bind and internalized avidin as well as the avidin-biotin complex. Avidin seems to mimic a natural ligand that could be the biotin-binding protein of serum. Additions of serum fatty acids, aspartate or asparagine to the culture medium do not supplant the biotin requirement. Nuclear fractions of cells contain significant biotin without the ability to fix carbon dioxide. A biotin-containing protein has been isolated from rat liver nuclei. The incorporation of amino acids into cellular protein is decreased in biotin-deficient HeLa cells. The proportion of active ribosomes is also decreased in these cells. Supplementation of the medium of deficient cells with biotin results in stimulation of protein synthesis. It is suggested that biotin might subserve a function in cells in addition to its role as the prosthetic group of biotin-enzymes. PMID- 3860179 TI - Molecular analysis of chromosome 21 using somatic cell hybrids. PMID- 3860180 TI - Indications of centromere movement during interphase and differentiation. AB - Mouse and human DNA sequences from centromeric and ribosomal domains were labeled with biotinylated deoxynucleotides and hybridized in situ to paraformaldehyde fixed tissue culture cells. Centromeres were widely dispersed in most of these interphase nuclei. At late G2 phases of the cell cycle, centromeres appeared to coalesce and then to align in an orderly pattern, with discrete positional assignments for individuals chromosomes in metaphase and anaphase. Ribosomal cistrons were also organized in an orderly and defined fashion during mitosis. As soon as the nuclear membrane forms in early G1, centromeres rapidly disperse throughout the nucleus. Centromere patterns during G1 and S were indistinguishable in cultured cells, as determined by double-labeling experiments. Antibodies that bind to centric chromosomal proteins revealed the same patterns in cultured cells as those obtained with DNA sequence-specific probes. Large differentiated neurons display reproducible collections of centromeres in interphase that are very different from those seen in cultured cells. Neurons in widely divergent mammalian species, despite large differences in centromeric DNA sequences, maintain similar nuclear positions for these chromosomal segments. Similarly, ribosomal cistrons are positioned in comparable nuclear locales in neurons of divergent species. It is suggested that such arrangements reflect, or are necessary for, the function of a given cell type. Studies of large cerebellar neurons at critical times in development indicated a relative "movement" of centromeric domains, away from the nuclear membrane and toward the central nucleolar region. It is possible that the orderly and temporal positioning of centromeric, as well as of other chromosomal regions, is based on protein-nucleic acid interactions. Implications for trisomy 21 and other disorders involving chromosomal rearrangements, such as transposition, are considered from this perspective. PMID- 3860181 TI - Molecular organization in the proximal region of human acrocentric chromosomes. PMID- 3860182 TI - Increase of unidentified HLA antigens in pulmonary tuberculosis. AB - We studied the HLA-A, B,C and DR antigens in 50 patients with advanced pulmonary tuberculosis in an effort to detect some genetic factors which may predispose to the development of this disease. We found a decrease in HLA-A3, A9, B5, B8, B13, B17 and B27. The incidence of "double blank" antigens in the locus A was 18% (2.5% in controls, p less than 0.0005) in the locus B 16% (1.5% in controls, p less than 0.0005) and 28% in the DR locus (7% in controls, p less than 0.0005). Our results suggest that the cells responsible for the immune response in patients with tuberculosis appear to have a diminished number of HLA antigens serologically determined. That phenomenon could be explained by several hypothesis like poor expression of these proteins or masking for another substance. In spite of the mechanism, this abnormal membrane expression of HLA antigens could be important for the development of the disease since the cell cell interactions critical for the mounting of an adequate immune response might not be appropriate. PMID- 3860183 TI - Genetic studies in Atacameno Indians: serum protein and red cell-enzyme polymorphisms. AB - Phenotype and gene frequencies among Atacameno Indians are presented for nine serum protein polymorphisms (Hp, Gc with subtypes, Tf with subtypes, Amy, C3, Bf, PLG) and nine red-cell-enzyme polymorphisms (AcP, PGM1 with subtypes, AK, ADA, 6 PGD, GPT, EsD, GLO). Four systems--Tf, Amy, AK, ADA were found to be monomorphic. In the PGM1 subtypes an extremely high frequency of PGM1a3 could be observed. In two samples a new Gc mutant was identified and classified as Gc1A26. In the EsD system an unusual phenotype was detected in one sample. PMID- 3860184 TI - Red-cell enzymes and serum proteins among Brahmins and Kammas of coastal Andhra Pradesh, India. AB - Haemolysate and plasma samples from Brahmin and Kamma caste populations of coastal Andhra Pradesh have been examined by electrophoresis on horizontal starch gels for red-cell enzymes and plasma proteins, namely ACP, SOD, LDH, MDH, Hp, Tf, Cp and ALB. Higher frequencies compared to other populations for ACPb and Hp2 alleles were recorded. The only variant found is one Tf C-slow phenotype among the Kammas, and the rest of the loci studied are monomorphic. PMID- 3860185 TI - Pefloxacin therapy for experimental endocarditis caused by methicillin susceptible or methicillin-resistant strains of Staphylococcus aureus. AB - The therapeutic efficacy of pefloxacin in experimental endocarditis caused by methicillin-susceptible or methicillin-resistant Staphylococcus aureus was evaluated. In rabbits infected with a methicillin-susceptible strain, 4 days of pefloxacin therapy significantly reduced both the number of bacteria per gram of vegetation and the mortality rate compared with untreated controls, and pefloxacin was equivalent to cephalothin. Pefloxacin was also as effective as vancomycin in reducing vegetation titers and mortality rate in animals with endocarditis caused by a methicillin-resistant strain. These results suggest that pefloxacin may be an effective agent in the therapy of serious infections caused by either methicillin-susceptible or -resistant strains of S. aureus. PMID- 3860186 TI - Enoxacin compared with cefoperazone for the treatment of experimental Enterobacter aerogenes endocarditis. AB - This study compared enoxacin administered orally with cefoperazone administered intramuscularly for the treatment of Enterobacter aerogenes endocarditis in rabbits. The MICs and MBCs of both enoxacin and cefoperazone for an inoculum of 10(5) CFU/ml of the E. aerogenes strain used were 0.8 micrograms/ml, respectively. With an inoculum of 10(8) organisms per ml, enoxacin at 2 and 5 micrograms/ml and cefoperazone at 60 and 155 micrograms/ml were effective in reducing titers of E. aerogenes in broth. E. aerogenes endocarditis in rabbits was treated with enoxacin (100 or 25 mg/kg orally every 6 h) or cefoperazone (60 mg/kg intramuscularly every 6 h) for 5 or 10 days. Enoxacin at 100 and 25 mg/kg significantly reduced bacterial titers of vegetations compared with those of untreated controls. Enoxacin at 100 mg/kg was significantly more effective than enoxacin at 25 mg/kg and cefoperazone. Enoxacin at 25 mg/kg and cefoperazone did not differ significantly. Cefoperazone and controls did not differ significantly. In uninfected rabbits single doses of cefoperazone achieved much higher concentrations in serum than single doses of enoxacin (25 and 100 mg/kg). The half-lives of enoxacin at 25 and 100 mg/kg were approximately three times longer than that of cefoperazone. PMID- 3860188 TI - Inhibition and stimulation of ribulose-1,5-bisphosphate carboxylase/oxygenase by glyoxylate. AB - Glyoxylate is a slowly reversible inhibitor of the CO2/Mg2+-activated form of ribulose-1,5-bisphosphate carboxylase/oxygenase from spinach leaves. Inactivation occurred with an apparent dissociation constant of 3.3 mM and a maximum pseudo first-order rate constant of 7 X 10(-3) s-1. The rate constant for reactivation was 1.2 X 10(-2) s-1. Glyoxylate did not cause differential inhibition of ribulosebisphosphate carboxylase or oxygenase activities. 6-Phosphogluconate protected the enzyme from inactivation by glyoxylate. Glyoxylate was incorporated irreversibly into the large subunit of ribulosebisphosphate carboxylase after reduction with sodium borohydride. Activated enzyme incorporated 1.3 mol of glyoxylate per mole protomer, while enzyme treated with carboxyarabinitol 1,5 bisphosphate (CABP) to protect the active sites incorporated only 0.3 mol glyoxylate per mole protomer. The data suggest that glyoxylate forms a Schiff base with a lysyl residue in the region of the catalytic site. Glyoxylate stimulated the activity of the unactivated enzyme by about twofold. Pseudo-first order inactivation also occurred with the unactivated enzyme after the initial stimulation by glyoxylate, although at a much slower rate than with the activated enzyme. Glyoxylate treatment of partially activated enzyme did not stimulate formation of the quaternary complex of enzyme X CO2 X Mg2+ X CABP. PMID- 3860187 TI - Safety and efficacy of high-dose treatment with imipenem-cilastatin in seriously ill patients. AB - Imipenem-cilastatin was given in doses of 1 g intravenously every 6 h to 31 patients. Twenty-five patients, with 27 infections, were clinically evaluable and received 20 to 210 g of imipenem for a duration of 5 to 56 days (average 16.3 days). Infections included seven cases of osteomyelitis, seven of bacteremia, five of cellulitis, two of pneumonia, three of pelvic cellulitis, two of intraabdominal abscess, and one each of empyema, mediastinitis, and endometritis. Fifty-five percent of the infections were caused by gram-negative bacilli, 33% were due to gram-positive organisms, and 10% were caused by anaerobes. Twenty-two patients (81%) were cured, three improved, one relapsed, and one became superinfected with a resistant organism. In 5 of 11 cases with Pseudomonas aeruginosa, the imipenem MIC for organisms isolated by the end of treatment was higher than it was initially, raising concern that imipenem should not be used alone to treat Pseudomonas aeruginosa infections. Twenty-one patients had no adverse reaction; of the remaining 10 patients, 4 had nausea, 1 had urticaria, and 6 had mild abnormalities in hepatic function; three episodes of diarrhea included two with Clostridium difficile toxin in stool and one with pseudomembranous colitis, as determined by sigmoidoscopy. Levels of creatinine, hemoglobin, leukocytes, platelets, prothrombin, and urine components were unchanged. Imipenem-cilastatin is a clinically effective antibiotic with freedom from nephrotoxicity and hematological abnormalities in the large doses used in this study. PMID- 3860189 TI - Characterization of an active-site peptide modified by glyoxylate and pyridoxal phosphate from spinach ribulosebisphosphate carboxylase/oxygenase. AB - Activated ribulosebisphosphate carboxylase/oxygenase from spinach was treated with glyoxylate plus or minus the transition-state analog, carboxyarabinitol bisphosphate, or the inactive enzyme with pyridoxal phosphate plus or minus the substrate, ribulose bisphosphate. Covalently modified adducts with glyoxylate or pyridoxal phosphate were formed following reduction with sodium borohydride. The derivatized enzymes were carboxymethylated and digested with trypsin; the labeled peptides which were unique to the unprotected samples were purified by ion exchange chromatography and gel filtration. Both glyoxylate and pyridoxal phosphate were associated with only one major peptide, which in each case was subjected to amino acid analysis and sequencing. The sequence was -Tyr-Gly-Arg Pro-Leu-Leu-Gly-Cys(Cm)-Thr-Ile-Lys-Lys*-Pro-Lys-, with both reagents exhibiting specificity for the same lysine residue as indicated by the asterisk. This peptide is identical to that previously isolated from spinach carboxylase labeled with either of two different phosphorylated affinity reagents and homologous to one from Rhodospirillum rubrum carboxylase modified by pyridoxal phosphate. The species invariance of this lysine residue, number 175, and the substantial conservation of adjacent sequence support the probability for a functional role in catalysis of the lysyl epsilon-amino group. PMID- 3860190 TI - Regulation of succinyl-CoA:3-oxoacid CoA-transferase in developing rat brain: responsiveness associated with prenatal but not postnatal hyperketonemia. AB - Activities of ketone body-metabolizing enzymes in rat brain rise 3- to 5-fold during the suckling period, then fall more than 50% after weaning. Our purpose was to determine the mechanism of the developmental changes in activity of 3 oxoacid CoA-transferase in rat brain and to study its regulation by dietary modification. Purified rat brain 3-oxoacid CoA-transferase was used to generate specific antibody. Immunotitrations of the enzyme from brains of 4-, 24-, and 90 day-old rats indicated that changes in 3-oxoacid CoA-transferase activity during development are due to changes in content of the enzyme protein. Pulse-labeling studies showed that changes in enzyme specific activity reflected changes in its relative rate of synthesis, which increased 2.5-fold between the nineteenth day of gestation and the third postnatal day, remained at this high level until the twelfth postnatal day, and declined thereafter, returning by Day 38 to the level observed in utero. The enzyme is apparently degraded very slowly during early postnatal life. Fetal hyperketonemia induced by feeding pregnant rats a high-fat diet was associated with an increase in the relative rate of synthesis of 3 oxoacid CoA-transferase in brains of 19-day-old fetuses and newborn rats and with an increase in the specific activity of the enzyme at birth. To examine the role of postnatal hyperketonemia in the development of the enzyme in brains of suckling rats, neonates received intragastric cannulas and were fed, for up to 13 days, a modified milk formula low in fat. Postnatal hyperketonemia was abolished but cerebral 3-oxoacid CoA-transferase specific activity on Days 10 and 17 was not significantly affected. Thus, the physiological hyperketonemia caused by the high fat content of rat milk is not required for the normal development of 3 oxoacid CoA-transferase in rat brain. PMID- 3860191 TI - 'Golden tongue' syndrome caused by Ramichloridium schulzeri. AB - A 54-year-old woman entered the hospital for induction chemotherapy for acute lymphocytic leukemia. On hospital day 23, while the patient was neutropenic, an erosive lesion appeared on the left side of the tongue. During the next several days the lesion extended over the dorsum of the tongue and was golden orange. Surface scrapings were obtained; the involved site underwent a biopsy and was cultured. Branching septate mycelia of varying diameters were seen on microscopic examination of direct mounts and a biopsy specimen of the tongue. Eight to ten colonies of a fungus grew out in culture. The fungus was golden orange on Sabouraud's glucose agar and brown-gray on corn-meal agar, and was identified as Ramichloridium schulzeri. The lesion regressed during the next two weeks while the patient received amphotericin B therapy and showed an increased granulocyte count. This case seems to be the first authenticated infection caused by this uncommonly encountered soil saprophyte. PMID- 3860192 TI - Acute lymphoblastic leukaemia presenting with raised intracranial pressure. AB - A child presented with raised intracranial pressure for which no cause was established. Five months later a further cerebrospinal fluid examination showed lymphoblasts expressing the common acute lymphoblastic leukaemia phenotype. Bone marrow infiltration was not present. This case illustrates the difficulties that may be encountered in establishing the diagnosis of central nervous system leukaemia. PMID- 3860193 TI - Placental steroid sulphatase deficiency. PMID- 3860194 TI - A twin study of Tourette syndrome. AB - In 43 pairs of same-sex twins, in which at least one co-twin had Tourette syndrome (TS), 30 pairs were probably monozygotic (MZ) and 13 were probably dizygotic (DZ). Concordances for TS were 53% and 8% for MZ and DZ pairs, respectively. When diagnostic criteria were broadened to include any tics in co twins, concordance rates were 77% and 23% for MZ and DZ pairs, respectively. These concordances are consistent with genetic etiology. However, the fact that only 53% of MZ twins were fully concordant indicates nongenetic factors affect expression of TS. Presence of tics in discordant co-twins and timing of onset in partially concordant co-twins support an association between TS and tics in families with TS present. The data are inconclusive on whether some MZ twins with discordant co-twins are etiologically different from those who are concordant. PMID- 3860195 TI - The central nervous system leukemia: a clinical and pathological study. AB - Post-mortem clinical and pathological study of 18 cases of central nervous system leukemia showed that this complication occurred mostly in chronic myelogenous leukemia (38.8%). No diagnostic criteria was found. The great majority of signs and symptoms were related to either disturbances of the mental status or cranial nerves dysfunction. Cerobrospinal fluid may be found normal. CNS involvement may occur at any time during the course of systemic leukemia, when the disease is under apparently good therapeutic control as well as during relapse. Pathological findings in order of decreasing frequency were: parenchymal hemorrhage (61%); subarachnoid hemorrhage (55%); meningeal infiltrates (44%); leukostasis (28%); edema and herniation (28%); parenchymal infiltrates (22%); ischemic infarcts (17%); progressive multifocal leucoencephalopathy (10%); calcifications (5%); meningitis (5%). Total survival time ranged from 8 to 1980 days a median of 300 days. Survival time after CNS involvement ranged from 1 to 180 days with a median of 21 days. PMID- 3860196 TI - Retinal hemorrhages in the newborn following labor induced by oxytocin or dinoprostone. AB - We examined the fundi of 100 newborns following labor induced by intravenous oxytocin or by oral dinoprostone. Retinal hemorrhage was observed in 40% of neonates in the dinoprostone treatment group, as compared with 28% in the oxytocin treatment group. The accumulation of prostaglandins in the fetal circulation may be responsible for the hemorrhages, which clear spontaneously once the noxious agent is metabolized. Other organ systems must be carefully examined in the neonate to detect other possible untoward effects. PMID- 3860197 TI - Topical acetazolamide and methazolamide delivered by contact lenses. AB - Topical acetazolamide has been previously found to be ineffective in lowering intraocular pressure (IOP). Using high-water-content soft contact lenses (Sauflon PW) soaked in acetazolamide, we observed a statistically significant ipsilateral decrease in IOP of 6.3 +/- 0.4 mm Hg in the treated eyes of albino rabbits. The duration of the effect was up to 7 1/2 hours. Methazolamide-soaked contact lenses produced a maximum unilateral reduction of similar magnitude but shorter duration. Both serum and aqueous humor analyses for pH, carbon dioxide pressure, bicarbonate, and base excess indicate that acetazolamide delivered by soft contact lenses is able to penetrate the cornea in sufficient concentration to lower IOP by a local mechanism in rabbits without significant systemic absorption. PMID- 3860198 TI - Suppressive effect of prostaglandin D2 on prolactin secretion from rat anterior pituitary. PMID- 3860199 TI - The Australian Society for Medical Research: annual scientific meeting, Hobart, 9 12 December, 1984. Abstracts. PMID- 3860200 TI - Gastroenterological Society of Australia: annual scientific meeting, Adelaide, 14 16 October, 1984. Abstracts. PMID- 3860201 TI - The control of mutagenesis and cell differentiation in cultured human and rodent cells by chemicals that initiate or promote tumor formation. PMID- 3860202 TI - Inhibition of rat brain galactocerebroside sulfotransferase by triazine aromatic dyes: interaction with the 3'-phosphoadenosine 5'-phosphosulfate binding site. AB - The mechanism of inhibition of rat brain cerebroside sulfotransferase (EC 2.8.2.11) by a series of triazine aromatic dyes was examined. These dyes are putative site-specific probes of the "dinucleotide fold". All of the dyes examined were competitive inhibitors of cerebroside sulfotransferase with respect to 3'-phosphoadenosine 5'-phosphosulfate (PAPS) binding. In addition, the binding of the dye, Congo Red, to the sulfotransferase was associated with a red shift in its absorption spectrum. Based on these results, it is suggested that rat brain cerebroside sulfotransferase contains a "dinucleotide fold" as a structural feature of the protein. PMID- 3860203 TI - Methotrexate-resistant human promyelocytic leukemia (HL-60) cells express a dihydrofolate reductase with altered properties associated with increased enzyme activity. AB - Dihydrofolate reductase from a MTX-resistant human promyelocytic leukemia cell line (HL-60 R4-29) had previously been found to have a higher specific activity than the DHFR from the parent MTX-sensitive cell line, in the absence of enzyme overproduction (Dedhar et al, Biochem. J. 225, 609-617, 1985). The enzymes from these two cell lines have been purified to apparent homogeneity as judged by sodium dodecyl sulphate-polyacrylamide gel electrophoresis. The dihydrofolate reductase from the sensitive cells has an apparent molecular weight of 42,000 daltons, whereas that from the resistant cells has an apparent molecular weight of 21,000 daltons. The dihydrofolate reductase activity from the resistant cells is characterized by marked heat instability and substantially higher Vmax and Km values for the dihydrofolic acid/NADPH combination. The enzyme from the resistant cells can be protected against heat inactivation by either dihydrofolic acid or NADPH, or both. A 50 fold higher concentration of methotrexate was required to totally inhibit the R4-29 dihydrofolate reductase activity as compared to the (S) activity when the enzymes were assayed using equivalent amounts of enzyme protein. These data show that the increased dihydrofolate reductase specific activity present in the (R4-29) cells is associated with an alteration in the structure of this enzyme. PMID- 3860204 TI - Human breast milk stimulates prostaglandin synthesis in cultured human skin fibroblasts. AB - Effect of human breast milk or its fractions on prostaglandin synthesis was investigated in cultured human skin fibroblasts. Prostaglandins released into the media were measured by radioimmunoassay. Incorporation of breast milk (2% level) into 10% fetal calf serum media (for 48 hours) stimulated the synthesis of 6-keto PGF1 alpha (stable product of prostacyclin) by 800%. This stimulating effect of milk persisted after cold acetone extraction to remove phospholipids and potentiated further after dialysis. Stimulation by one of the commercial formulas (Similac) was less than 50% of the milk effect. Milk also stimulated PGE2 synthesis, although to a much lesser degree. These studies show for the first time that a) human breast milk contains potent factor(s) capable of influencing prostaglandin synthesis and suggest that b) these factors might have a role in the development of lipid synthetic pathways during early life. PMID- 3860205 TI - Gm allotypes in white patients with systemic lupus erythematosus. PMID- 3860206 TI - Serum phosphate levels in acute myocardial infarction. PMID- 3860207 TI - Aztreonam in the treatment of soft tissue infections including diabetic foot infections. PMID- 3860208 TI - Gilles de la Tourette syndrome: an underdiagnosed disorder. PMID- 3860209 TI - [Angiocardiographic diagnosis. Interatrial communication (secundum)]. PMID- 3860210 TI - Echocardiography cases. Mitral valve stenosis. PMID- 3860211 TI - Food allergy and food intolerance. PMID- 3860212 TI - [Regional blood flow of experimental brain tumors with special reference to effects of chemotherapy and radiotherapy]. AB - Regional blood flow and capillary permeability in the experimental brain tumors and their surrounding brain tissue of rats were measured with quantitative 14C antipyrine and 14C-alpha-aminoisobutyric acid (AIB) autoradiographic method. The pharmacokinetic implications with respect to drug delivery to tumor tissue and the effect of ionizing irradiation were discussed in these physiological measurement. A suspension of 1 X 10(4) rat glioma cells (E239 RG 12) was stereotactically implanted into the right basal ganglia of CD-Fisher rats, and spherical brain tumors developed 10-17 days after implantation with a diameter of 1--5 mm. Autoradiographic investigations were performed for rats with small tumors (1--2 mm in diameter) and large tumors (4--5 mm in diameter). The uniform blood flow (91.7 +/- 13.1 ml/100 g/min: mean +/- S.E.) was observed in small tumors with the patchy low flow area (56.7 +/- 12.5 ml/100 g/min) surrounding the tumor. In large tumors, the blood flow was markedly decreased in the central part of the tumor (28.3 +/- 2.4 ml/100 g/min) with a ring shaped high flow area in the peripheral part (59.3 +/- 5.9 ml/100 mg/min). The blood flow in the brain adjacent to the tumor (30.5 +/- 2.5 ml/100 g/min) was lower than that in the peripheral part of the tumor. The uptake of 14C-AIB was quite similar to that of 14C-antipyrine suggesting the smaller permeability in the central part of the tumor. Neuropathological studies did not reveal necrotic foci, but viable cells in these areas.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860213 TI - The effects of prostaglandin E2 in rapidly growing rats: depressed longitudinal and radial growth and increased metaphyseal hard tissue mass. AB - The effects of 0, 0.3, 1.0, 3.0, or 6.0 mg of prostaglandin E2 (PGE2)/kg/day administered subcutaneously for 3 weeks to triple fluorochrome-labeled weanling rats are reported. Microradiographs and undecalcified sections of proximal tibiae, tibial shafts, and seventh caudal vertebrae were evaluated by static and dynamic bone histomorphometry techniques. Significant changes were observed only at higher dose levels. Proximal tibial longitudinal growth rates were depressed in doses of 1, 3, or 6 mg PGE2/kg/day. Growth plate thickness and the size of hypertrophic cartilage cells were decreased in animals given 3 and 6 mg of PGE2/kg/day, but the calculated rate of cartilage cell production was unaffected. At doses of 6 mg PGE2/kg/day, periosteal bone apposition rates between Day -1 and Day +19 in both the tibial shafts and caudal vertebral cortices were depressed by less than 25%. Cortical bone mass and endosteal bone apposition rates in the tibial shaft and caudal vertebrae were unaffected. Hard tissue mass in the secondary spongiosa of the proximal tibial metaphysis increased dramatically (28%, 44%, and 60%, respectively) in rats treated with 1, 3, or 6 mg PGE2/kg/day. In addition, the secondary spongiosa contained numerous islands of woven trabecular bone along with an increased number of trabeculae. The study demonstrates that high doses of PGE2 stimulate new woven trabecular bone production and depress longitudinal and radial growth in rapidly growing rats. PMID- 3860214 TI - Standards and training of DSAs. PMID- 3860215 TI - Management of early dental caries in fissures with fissure sealant. PMID- 3860216 TI - Ectopic ladybird. PMID- 3860217 TI - In defence of dental materials. PMID- 3860218 TI - Endodontic treatment for children. PMID- 3860219 TI - Facial infection arising from dens evaginatus. PMID- 3860221 TI - AIDS and dentists in Australia. PMID- 3860220 TI - Recurrent bilateral anterior dislocation of the mandible. PMID- 3860222 TI - Letter from California: the malpractice problem. PMID- 3860223 TI - Surgical endodontics. PMID- 3860224 TI - Reduction of the dose to patients during lateral cephalometric radiography. Report of a Joint Working Party of the British Society for the Study of Orthodontics and the British Society of Dental and Maxillofacial Radiology. PMID- 3860225 TI - Some Asian communities in the UK and their culture. PMID- 3860227 TI - Dental health of a sample of Glasgow adolescents. PMID- 3860226 TI - Destructive forms of periodontal disease in adolescents and young adults. PMID- 3860228 TI - Assessment and clinical management of early caries in young adults: invasive versus non-invasive methods. PMID- 3860229 TI - Occlusal management for the adolescent. PMID- 3860230 TI - The use of behaviour modification techniques as an aid to improving adolescents' oral hygiene. PMID- 3860231 TI - Negotiation of obstructed canals; bleaching of teeth. PMID- 3860232 TI - National and international standards for anaesthetic equipment. PMID- 3860233 TI - Public health implications of the international alcohol industry: issues raised by a World Health Organisation project. PMID- 3860234 TI - Some proposals for drugs legislation. PMID- 3860235 TI - Alcoholism and the nature of outcome. PMID- 3860236 TI - Drug use and religious affiliation, feelings and behaviour. PMID- 3860237 TI - Alcohol consumption and the incidence of acute alcohol-related problems. PMID- 3860238 TI - A study of alcoholism treatment units: some findings on links with community agencies. PMID- 3860239 TI - Children's attitudes to alcohol and awareness of alcohol-related problems. PMID- 3860240 TI - Vasopressin concentrations during alcohol withdrawal. PMID- 3860241 TI - Intravenous nicotine simulation of passive smoking to estimate dosage to exposed non-smokers. PMID- 3860242 TI - Does watching others smoke increase smoking? PMID- 3860243 TI - The impact of a research interview on clinical re-attendance: a happy finding. PMID- 3860244 TI - Transient Gilles de la Tourette syndrome following alcohol withdrawal. PMID- 3860245 TI - Underestimation of recalled alcohol intake in relation to actual consumption. PMID- 3860246 TI - Biological properties of a spontaneous murine tumour (STS) suitable for in vitro in vivo studies. PMID- 3860247 TI - Incidence of the 15q+;17q- chromosome translocation in acute promyelocytic leukaemia (APL). AB - Cytogenetic analysis was carried out on peripheral blood cultures from seven patients with acute promyelocytic leukaemia (APL-M3). A reciprocal 15;17 chromosome translocation, t(15q+;17q-), was found in all cases, and the breakpoints estimated to be 15q22 and 17q12-21. In addition to the t(15q+;17q-), trisomy 10 was found in 50% of cells analysed in one case. These results suggest that the 15;17 chromosome translocation may be observed in most cases of APL where the leukaemic cells are cultured before cytogenetic analysis is performed. The use of conditioned media in the culture of leukaemic cells is also described. PMID- 3860248 TI - Low-dose cytosine arabinoside regimen induced a complete remission with normal karyotypes in a case with hypoplastic acute myeloid leukaemia with No. 8-trisomy: in vitro and in vivo evidence for normal haematopoietic recovery. AB - Complete remission was achieved in a case of hypoplastic acute myeloid leukaemia with chromosomal aberration of No. 8-trisomy by giving very low dose of cytosine arabinoside (ara-C), 10 mg (7 X 5 mg/m2)/d, by 24 h continuous intravenous infusion for 20 d. We observed a definite cytoreduction phase in the bone marrow (BM) before normal haematopoiesis resumed. The remission BM showed only normal karyotypes in all metaphases examined. Granulocyte/macrophage colonies and erythroid bursts recovered sufficiently in numbers and cytogenetic study on single colonies and bursts revealed only normal karyotypes. These observations provide evidence that a low dose ara-C regimen can induce remission by cytoreduction which diverts the growth advantage from the leukaemic clone to the normal clones. PMID- 3860250 TI - Clinical orthodontic experience of Liverpool undergraduates. AB - A longitudinal study has been carried out over a 3-year period to monitor the effects of a change in emphasis in the clinical orthodontic training of undergraduate students. The change allowed them to treat more patients over a longer period of time with a greater variety and complexity of appliance, and to observe these patients into retention. PMID- 3860249 TI - Philadelphia chromosome-negative chronic myelogenous leukaemia: a morphological reassessment. AB - Morphological re-examination of 25 cases classified as Ph1-negative chronic myelogenous leukaemia (CML), with particular attention to the recent French American-British (FAB) group proposals for the diagnosis of the myelodysplastic syndromes, led to reclassification of all but one of these cases. Upon review of pretreatment material, seven of the 25 cases (28%) were considered to represent myeloproliferative and reactive conditions other than CML. Of the remaining 18 cases, 17 (94%) were reclassified as myelodysplastic syndromes (MDS). These included one case of refractory anaemia (RA), three of refractory anaemia with excess of blasts (RAEB), four of RAEB in transformation (RAEBT), and nine of chronic myelomonocytic leukaemia (CMMoL). Haematological findings in these 17 patients were compared to those in 50 randomly selected patients with Ph1 positive CML. Whereas an absolute basophilia in the peripheral blood was a nearly constant feature in the Ph1-positive group, it was lacking in all but one of the patients with myelodysplastic syndromes. Differences in the pattern and degree of dysplasia were also noted. Only one of the 25 cases studied was considered morphologically and clinically indistinguishable from Ph1-positive CML. It appears that Ph1-negative CML constitutes a heterogeneous group of prognostically distinct disorders and that, in most instances, careful morphologic examination will permit precise classification. PMID- 3860251 TI - Assessment of screen/film combinations for cephalometric radiography. AB - Six different intensifying screen/film combinations were used to produce cephalometric radiographs of a tissue equivalent phantom skull. The adequacy of the films was assessed by seven orthodontists on two occasions. There was a low intra- and interobserver correlation. A more objective and reproducible method is required to evaluate intensifying screen/film combinations for cephalometric radiography. PMID- 3860252 TI - Digital image processing of cephalometric radiographs: a preliminary report. AB - The principles of image capture, image storage and image processing in digital radiology are described. The enhancement of radiographic images using digital image processing techniques and its application to cephalometry is discussed. The results of a pilot study which compared some common cephalometric measurements made from manual point identification with those made by direct digitization of digital radiographic images from video monitors are presented. Although in an early stage of development, the results from the image processing system were comparable with those obtained by traditional methods. PMID- 3860253 TI - An investigation into factors which may deter patients from undergoing orthodontic treatment. AB - A survey of a sample of patients and their respective parents attending the Orthodontic Department at the Leeds Dental Hospital was undertaken to assess some of the socio-economic factors which may mitigate against the provision and successful completion of a course of active appliance therapy. It emphasizes that for many families an appreciable degree of inconvenience and cost is incurred and makes it essential that treatment needs are justified for each individual patient in order to reduce lack of co-operation. PMID- 3860254 TI - The Treatment Study Group of the BSSO. AB - A brief summary of the objectives of the Treatment Study Group and its activities to date is given and a Class II Division 2 case treated without extractions is presented. PMID- 3860255 TI - Hypodontia--problems of permanent space closure. PMID- 3860256 TI - The Function Regulator III: effects and indications for use. AB - Analysis of 20 cases of Class III malocclusion treated with the FR.III showed that correction of the anterior crossbite was effected by adjustment of incisor inclinations and backward rotation or repositioning the mandible accompanied by an increase in face height. Subjects which responded most favourably to the FR.III were those with severe Class III malocclusion and a deep incisor overbite. PMID- 3860257 TI - A cephalometric comparison between Angle Class II, division 2 malocclusion and normal occlusion in adults. AB - The lateral cephalometric radiographs of 56 adults with Angle Class II/2 malocclusion and of 81 persons with normal Class I occlusion are compared. The statistical analysis includes the calculation of the mean value, standard deviation and the determination of differences (Wilcoxon rank-test). Group characteristics are tested by stepwise discriminant analysis. The following statements regarding Angle Class II/2 as compared with normal Class I result from this study. The upper incisors are in a retruded position. The B-point is significantly retropositioned, whereas the pogonion is in a more normal position. The length of the mandibular corpus and the total length of the mandible are slightly diminished only. Normal values result for the size and position of the maxilla, the inclination of the mandibular corpus (angle between mandibular plane and NSe) and the gonion angle. PMID- 3860258 TI - Thumb sucking habit and associated dental differences in one of monozygous twins. PMID- 3860259 TI - Purification and kinetic characterization of a dopamine-sulfating form of phenol sulfotransferase from human brain. AB - The kinetic and biochemical properties of a purified, monoamine-sulfating form of phenol sulfotransferase (M-PST) from human brain are described. M-PST activity was separated and purified from phenol-sulfating activity by anion-exchange chromatography on DEAE-cellulose and subsequently purified on AffiGel Blue and Sephacryl S-200, routinely giving a final purification of over 20 000-fold, with approximately a 3% yield. The molecular weight of the active species, as estimated by gel filtration chromatography, was 250 000. The purified enzyme was inhibited by NaCl (50% at 325 mM) and showed an optimum for dopamine sulfation at pH 7.0. Of the monoamine substrates examined, 4-methoxytyramine was the most extensively sulfated at 20 microM, while at higher substrate concentrations (200 microM), tyramine was the apparent preferred substrate. Kinetic analysis demonstrated that sulfation by M-PST proceeds via an ordered, bisubstrate reaction mechanism, where 3'-phosphoadenosine 5'-phosphosulfate (PAPS) is the leading substrate. True Km values for dopamine and PAPS were 2.9 and 0.35 microM, respectively. The product inhibitor 3'-phosphoadenosine 5'-phosphate possessed a Ki of 0.07 microM, while the dead-end inhibitor ATP exhibited a Ki of 170 microM. PMID- 3860260 TI - Erythroid differentiation of cultured murine erythroleukemia cells by the spermine analogue canavalmine. AB - Canavalmine, an analogue of spermine, induced erythroid differentiation of murine erythroleukemia cells 745A, as evidenced by benzidine staining and heme content of cultured cells. Benzidine-positive cells synthesizing hemoglobin appeared on day 4 after addition of 250 microM canavalmine. The canavalmine-induced cell differentiation was inhibited by the addition of agents which alter the structure of the cell membrane, such as local anesthetics (procainamide and lidocaine) or Ca2+ antagonists (nifedipine and verapamil) at dosages not toxic for the cell growth. Canavalmine did not significantly affect the levels of conjugated polyamines in the acid-insoluble fraction of the cells. In contrast, the level of free spermidine in the acid-soluble fraction greatly decreased during the 18 h after canavalmine treatment. Putrescine and spermidine, when added externally to the growth medium, showed dose-dependent inhibition of canavalmine-induced cell differentiation. Neither cadaverine nor spermine had any significant effect. These results suggest that not only structural change of cell membrane but alteration of the polyamine metabolism, especially a regulation of the cellular level of free spermidine, might have a key importance in erythroid differentiation of murine erythroleukemia cells induced by canavalmine. PMID- 3860261 TI - Effects of mepacrine on uterine contractile responses. AB - Mepacrine is a potent inhibitor of uterine contractile responses in vitro. Pretreatment of isolated rat uterine horns with mepacrine (1.3 X 10(-4)M) for periods of time ranging from 15 s to 5 min prior to the addition of carbachol (1.0 X 10(-4)M) showed that mepacrine could significantly reduce carbachol induced uterine contractile responses within 15 s of exposure. The maximal inhibitory effects of mepacrine on uterine contractile responses were observed within 2 min of mepacrine treatment. A dose-response study related to the effect of increasing concentrations of mepacrine (7.5 X 10(-6) to 1.3 X 10(-4)M) on carbachol-induced (1 X 10(-4)M) uterine contractions revealed that a dose of 3.1 X 10(-5)M mepacrine reduced the carbachol-induced contraction by 50%. A dose of 7.8 X 10(-5)M mepacrine produced the maximal inhibitory effect on the carbachol induced uterine contractions. Two doses of mepacrine (3.1 X 10(-5) and 1.3 X 10( 4)M) significantly reduced maximal contractile responses and shifted contractile dose-response curves of carbachol, oxytocin, prostaglandin F2 alpha, and BaCl2 to the right. Based on the nonselective inhibition by mepacrine of contractile responses induced by different uterotonic agents, these results suggest that mepacrine cannot be used to characterize the role of phospholipase in regulating the actions of hormones in uterine tissue. PMID- 3860262 TI - Acrosome reaction of bovine spermatozoa in vivo: sites and effects of stages of the estrous cycle. AB - Thirty-two cows were inseminated near the uterotubal junction at various stages of the estrous cycle and slaughtered 16 h later to determine the effects of stage of the estrous cycle and tubal site of sperm recovery on the frequency of acrosome-reacted bull spermatozoa. Slaughter times were 46, 70, 144, or 168 h after each cow was injected with prostaglandin (PG) F 2 alpha or during the luteal phase of the estrous cycle. Sperm were recovered from the upper uterus and the isthmus and ampulla of the oviducts and stained for both viability and acrosome reaction. The highest frequency of acrosome-reacted sperm was found in the ampulla ipsilateral to a dominant follicle (largest follicle present) or recent ovulation and primarily at 70 h after PGF2 alpha (P less than 0.05). Also, fewer sperm were acrosome reacted prior to (46 h post-PGF2 alpha) and well after (168 h post-PGF2 alpha) estrus than during or immediately postestrus (70, 90, and 144 h post-PGF2 alpha; P less than 0.05). Except for two cows, one at 46 h and one at 70 h, all cows with more than 50% acrosome-reacted sperm in the ampulla had ovulated before slaughter. These data suggest that capacitated sperm become localized in the ampulla of the oviduct of the ovulatory side around the time of ovulation. PMID- 3860263 TI - [Lectin-inducible cell cytotoxicity and the production of the cytotoxic factor of natural killer cells during immobilization stress in mice]. AB - Mice exposed to immobilization stress manifested a dramatic lowering of the activity of normal killers against YAC-1 tumor as well as against the lectin induced cellular cytotoxicity mediated by Helix pomatia agglutinin and detected by the cytolytic test against xenogeneic tumor cells K 562. Exposure to stress did not provoke any change in the production of cytotoxic factor of normal killers, whereas dexamethasone (5 X 10(-7) M) in vitro inhibited the production of this factor. PMID- 3860264 TI - [Effect of prostaglandin F2 alpha on the microvessels in a transparent chamber implanted in the rabbit concha auriculae]. AB - The television analysing system LEITZ-TAS was employed to evaluate quantitative characteristics of the regeneration of microvessels in a transparent chamber implanted in rabbit ear under the influence of PGF2 alpha. It was established that formation of the microvascular network had been completed by the end of the first month after implantation of the chamber. Chronic injection of PGF2 alpha in the dose applied slowed down the growth of new microvessels and led to the constriction of arterioles and venules. PMID- 3860266 TI - The outpatient treatment of bulimia. PMID- 3860265 TI - Therapy for acute myeloid leukemia in 119 adults: a comparison of two treatment protocols. AB - Of 119 patients with acute myeloid leukemia, 69 were treated with Adriamycin, Vincristine and Cytosine Arabinoside (Therapy 1) and 50 with Daunorubicin, Cytosine Arabinoside and 6-Thioguanine (Therapy 2) as well as a consolidation therapy. The maintenance therapy with Cytosine Arabinoside and 6-Thioguanine was the same for both groups. The complete remission rate was 44% for Therapy 1 and 68% for Therapy 2 (p less than 0.05). - The median values for remission duration were 7 and 13 months respectively (p = 0.10); for survival time the median values were 18 and 19 months. These figures show in retrospect that high remission rates can be attained through intensive induction therapy and that longer remission duration is correlated with more aggressive induction therapy. A mild form of maintenance therapy seems to have little effect on the duration of complete remission. PMID- 3860267 TI - Anorexia nervosa and bulimia. Their differential diagnoses in 24 males referred to an eating and weight disorders clinic. PMID- 3860268 TI - Surgical management of osteogenic sarcoma of the lower limb. PMID- 3860269 TI - Clinical and policy issues. PMID- 3860271 TI - Anorexia nervosa in patients of Afro-Caribbean extraction. AB - Recently there has been an increase in the number of reports of anorexia nervosa in non-Caucasian subjects. This paper describes three patients of Afro-Caribbean extraction with anorexia nervosa and/or bulimia nervosa seen at a specialist eating disorders clinic at the Maudsley Hospital between 1981 and 1983. No cases had been seen prior to this. The key clinical features were found to be, in the main, typical. PMID- 3860270 TI - Anorexia and bulimia in anorexia nervosa: a study of psychosocial functioning and associated psychiatric symptomatology. AB - Seventeen fasting patients with anorexia nervosa and 15 who also binged were compared in terms of their psychosocial functioning and associated psychiatric symptomatology, using the Delusions Symptoms and States Inventory (Foulds & Bedford, 1975). Both groups scored very highly on the state of anxiety, depression, and elation sets of the DSSI, but less highly on the compulsive and ruminative symptoms sets and on the phobic dissociative and conversion symptom sets. The bingeing anorexic group was significantly older and heavier than the fasting group and experienced more feelings of self-harm and guilt. The bingeing group reported sexual interference during childhood, and currently experienced a desire to vomit during sexual activity to a significantly greater degree than the fasting group. PMID- 3860272 TI - Gilles de la Tourette syndrome and mania in an adolescent. AB - The case is presented of a twelve-year-old boy suffering simultaneously from Tourette Syndrome (TS) and a manic episode. The problems of this unique clinical association are discussed from the point of view of differential diagnosis, treatment, and possible biochemical basis. The case also illustrates the usefulness of the expanded concept of TS as a neuropsychiatric disorder with dysregulation of perceptual, motor, and cognitive functioning. PMID- 3860273 TI - Hypocholesterolaemia and abnormal high-density lipoprotein in rheumatoid arthritis. AB - Plasma lipid and lipoprotein patterns were determined in 54 female patients with rheumatoid arthritis (RA). The patients were divided into four groups, on the basis of the treatment that was being administered (gold, penicillamine, hydroxychloroquine and nonsteroidal anti-inflammatory drugs). Plasma cholesterol levels were significantly reduced in all groups. The reduced plasma cholesterol level was a result of 26% and 36% reductions in low- and high-density lipoproteins (LDL and HDL), respectively. Very-low-density lipoprotein cholesterol was reduced only in the group receiving hydroxychloroquine, and this was associated with decreased plasma triglycerides in this group. Plasma apolipoprotein (apo) B, the LDL protein moiety, demonstrated a pattern similar to that shown for LDL cholesterol. Plasma apo A-I, the major HDL protein, was, however, in the normal range, suggesting an abnormal HDL fraction. Even though reduced HDL cholesterol was found in RA patients, the HDL/LDL ratio was normal and the apo A-I/apo B ratio was increased, suggesting that these patients are not at increased risk for atherosclerosis. PMID- 3860274 TI - Peritoneovenous shunt in the management of paediatric chylous ascites. PMID- 3860275 TI - Clinical sub-groups of multiple sclerosis in relation to HLA: DR alleles as possible markers of disease progression. AB - We have examined the distribution of HLA antigens in 70 multiple sclerosis (MS) patients divided in three groups defined according to clinical criteria: benign MS, severe MS, cerebellar MS. We have found a significant association between severe MS and HLA-DR2, and between benign MS of more than 15 years of evolution and HLA-DR3. We review previous work along the same line and conclude that the association of HLA antigens with "clinical subgroups of MS" could indicate a genetically based heterogeneity of the disease and offer help in establishing a prognosis. PMID- 3860276 TI - Complications of chemotherapy. PMID- 3860277 TI - [Congenital malformations due to accutane]. PMID- 3860278 TI - Low-dose cytosine arabinoside in the myelodysplastic syndromes and acute myelogenous leukemia. AB - Seven patients with a myelodysplastic syndrome or "smoldering" acute myelogenous leukemia were treated with cytosine arabinoside in low dosage. Four patients experienced transient, partial responses characterized by improved peripheral blood counts, cessation of transfusion requirements, and a decreased incidence of infection. Treatment was associated with significant, transient hematologic toxicity. The appropriate clinical role of low-dose cytosine arabinoside remains uncertain. PMID- 3860279 TI - The effects of cyclophosphamide, ketoconazole, aclacinomycin-A, methotrexate, and scheduled methotrexate-5-fluorouracil combination chemotherapy on the transplantable R-3327 prostatic adenocarcinoma in the F1 hybrid male rat. AB - Male F1 hybrid rats bearing the R-3327 transplantable prostatic adenocarcinoma demonstrating similar growth patterns within the original sample of animals were carefully separated into control and treatment groups. This assured treatment of tumors with similar cell kinetics within each group. In the first study, two separate drug protocols were investigated by intraperitoneal injection, namely cyclophosphamide (100 mg/kg) once every 4 weeks for 8 weeks and scheduled methotrexate (7.5 mg/kg) followed in 90 minutes by 5-fluorouracil (50 mg/kg) once each week for 8 weeks. Excellent suppression of tumor growth was obtained with each treatment protocol. Both were significant at the 0.01 level. In the second study, methotrexate (100 mg/kg) intraperitoneally once each week for 6 weeks, aclacinomycin-A intraperitoneally once each week for 4 weeks, and ketoconazole (60 mg/kg) via gavage 5 times a week for 6 weeks were administered to the animals in each respective group. Aclacinomycin-A and ketoconazole showed significant suppression of tumor growth at the 0.01 and 0.05 levels, respectively. Methotrexate suppressed tumor growth, but did not reach levels of significance over the duration of the study (0.2 less than P less than 0.3). PMID- 3860280 TI - Spontaneous remission in adult acute leukemia. AB - A spontaneous complete remission of 34 months' duration was observed in an adult patient with acute myeloblastic leukemia. The remission occurred after a severe febrile pneumonia, which was treated with leukocyte transfusions. At relapse, chromosomal abnormalities reappeared slowly. Such spontaneous complete remissions, almost always associated with bacterial infections and blood transfusions, are extremely rare, and are usually of short duration. Previous cases are summarized, and the role of etiologic factors, including those related to the leukemic proliferation, are discussed. PMID- 3860281 TI - Osteogenic sarcoma of the skull. A clinicopathologic study of 19 patients. AB - The authors studied 19 patients with well documented osteogenic sarcomas arising in the skull, which represent 1.6% of all osteogenic sarcomas registered during a 60-year period (1921-1981). Ten sarcomas were primary, de novo tumors. Nine others developed secondary osteogenic sarcomas; among these, six arose as a complication of Paget's disease, two followed irradiation, and one was associated with pre-existent fibrous dysplasia. The sarcomas arose in equal proportion in both sexes with the men being much older (mean age, 44 years) as compared to the women (mean age, 31 years). Patients with de novo osteogenic sarcomas were considerably younger than those with secondary lesions. Osteoblastic osteogenic sarcoma was by far the most common histologic variant in both the primary and the Paget's sarcomas. None of the patients with Paget's sarcoma lived longer than 1 year; the median survival here was 4 months. Patients with de novo osteogenic sarcomas fared much better and there are four long-term survivors (longer than 3 years) who are currently disease-free. PMID- 3860282 TI - Acute nonlymphoblastic leukemia with bone marrow eosinophilia and structural anomaly of chromosome 16. AB - A patient with acute myelocytic leukemia in relapse presented with t(16;21) (p12;q22). Hematologic studies revealed a large number of abnormal eosinophils in the bone marrow. The complexity of chromosome #16 rearrangements associated with acute nonlymphocytic leukemia and the possible significance of chromosomes #16 and #21 in relation to the concomitant eosinophilia are briefly discussed. PMID- 3860283 TI - Chronic myelogenous leukemia with translocation (8;22): report of a new case. PMID- 3860284 TI - Chronic myelogenous leukemia and breaks at 9q34. PMID- 3860285 TI - Investigation of resistance to DNA cross-linking agents in 9L cell lines with different sensitivities to chloroethylnitrosoureas. AB - The 9L-2, 9L-7, and 9L-8 cell lines, derived from the 9L in vivo rat brain tumor, were treated with nitrosoureas that can alkylate and cross-link DNA and carbamoylate intracellular molecules to various extents. Compared to 9L cells, 9L 2 cells were very resistant to the cytotoxic effects of 1,3-bis(2-chloroethyl)-1 nitrosourea, and to 2-[3-(2-chloroethyl)-3-nitrosoureido]-D-deoxyglucopyranose. The sensitivity of 9L-7 and 9L-8 cell lines to these drugs was intermediate between 9L and 9L-2. Treatment of 9L, 9L-2, 9L-7, and 9L-8 cell lines with 1,3 bis(trans-4-hydroxycyclohexyl)-1-nitrosourea produced approximately the same level of cell kill. Compared to 9L cells, 9L-2 cells are 10-fold more resistant to the cytotoxic effects, 34-fold more resistant to the induction of sister chromatid exchanges, and have 40% fewer DNA interstrand cross-links caused by treatment with 3-(4-amino-2-methyl-5-pyrimidinyl)methyl-1-(2-chloroethyl)-1 nitrosourea . In contrast, treatment of 9L and 9L-2 cells with 1-ethylnitrosourea produced approximately the same level of cell kill and induction of sister chromatid exchanges. Our results suggest that the resistance of 9L-2, 9L-7, and 9L-8 cells is related to DNA cross-linking and not to alkylation or carbamoylation. We studied the effects of other agents that form DNA cross-links with structures different from those formed by treatment with chloroethylnitrosoureas (CENUs) in 9L and 9L-2 cells. In contrast to results obtained with CENUs, 9L-2 cells were 2-fold more sensitive to the cytotoxic effects, 2-fold more sensitive to the induction of sister chromatid exchanges, and had 3-fold more cross-links formed than 9L cells treated with nitrogen mustard. However, the amount of cell kill, number of sister chromatid exchanges induced, and the DNA cross-linking were the same for 9L and 9L-2 cells treated with cis-diamminedichlorplatinum(II). Our results indicate that cellular resistance to CENUs is highly specific and that the mechanism of resistance does not allow cross-resistance with other DNA cross-linking agents. These and other results suggest that when DNA repair processes mediate cellular resistance to CENUs, other cross-linking agents will not be cross-resistant unless they form alkylation products that are affected by repair processes that mediate resistance to CENUs. PMID- 3860286 TI - Isolation and characterization of an anthracycline-resistant human leukemic cell line. AB - An anthracycline-resistant subline of HL-60 promyelocytic leukemia cells (HL 60/AR) has been isolated in vitro by subculturing in progressively higher concentrations of Adriamycin. The resistant cells are capable of sustaining continuous growth in 10(-6) M Adriamycin which is more than 50 times the 50% inhibitory dose for the parent line. HL-60/AR expressed variable degrees of cross resistance to daunorubicin, dihydroxyanthracenedione, vincristine, vinblastine, and actinomycin D, but it remained sensitive to methotrexate and 1-beta-D arabinofuranosylcytosine. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of glycoproteins of HL-60/AR revealed two prominent glycoproteins with molecular weights of 160,000 +/- 10,000 and 110,000 +/- 10,000 which were not detected in the sensitive cells. Cellular uptake and retention of daunorubicin was studied in the resistant and sensitive cells utilizing digitized video fluorescence microscopy. The sensitive cells accumulated more drug and showed at least 2-fold greater levels of brightness than the resistant cells. Studies of total intracellular accumulation, utilizing 10(-6) M [14C] daunorubicin as a marker, showed a 1-h accumulation of 98 +/- 20 pmol/10(6) cells in HL-60/AR versus 255 +/- 25 pmol/10(6) cells in HL-60. Exposure to nontoxic concentrations of the calcium channel blocker Verapamil (10(-5) M) led to enhanced accumulation (175 +/- 8 pmol/10(6) cells) and retention of the drug in HL-60/AR, resulting in increased cytotoxicity in HL-60/AR. These anthracycline resistant leukemic cells may serve as a valuable experimental model in studying the phenomenon of multiple drug resistance as well as strategies to circumvent it in human myeloid leukemia. PMID- 3860288 TI - Induction of a novel nuclear protein (p54) by phorbol esters in mouse erythroleukemia (Friend) cells. AB - Tumor-promoting phorbol esters including 12-O-tetradecanoylphorbol-13-acetate (TPA), specific inhibitors for erythroid differentiation in mouse Friend cells, induce a newly identified nuclear protein with a molecular weight of 54,000 (p54) in Friend cells. Phorbol, an analogue of TPA with neither tumor-promoting nor differentiation-inhibitory activity, did not induce p54. In a variant cell line of Friend cells which exhibits resistance to TPA in erythroid differentiation, p54 was not induced by TPA. The induction of p54 by TPA was counteracted by erythroid-inducing agents including dimethyl sulfoxide, hexamethylenebisacetamide, and actinomycin D. Throughout these experiments, we have observed an inverse relationship between p54 induction and cellular potential for erythroid differentiation. PMID- 3860287 TI - Central nervous system toxicity and cerebrospinal fluid pharmacokinetics of intraventricular 3-[(4-amino-2-methyl-5-pyrimidinyl)ethyl]-1-(2-chloroethyl)-1 nitro soureas and other nitrosoureas in beagles. AB - The central nervous system toxicity and cerebrospinal fluid (CSF) pharmacokinetics of 3-[(4-amino-2-methyl-5-pyrimidinyl)ethyl]-1-(2-chloroethyl)-1 nitrosoureas, a (ACNU) were determined in beagles and compared to those for three other nitrosoureas, 1-(2-chloroethyl)-3-(2,6-dioxo-3-piperidyl)-1 nitrosourea, 1,3-bis(2-chloroethyl)-1-nitrosourea, and chlorozotocin. Of the four drugs, ACNU was tolerated best and at doses of 0.2 to 0.8 mg/week for 8 consecutive weeks. We found that the average half-time for CSF elimination of ACNU was 18 min (range, 12 to 38 min). This value exceeded the known rate of ACNU decomposition in aqueous solution (28 to 29 min), implying that the disappearance of ACNU from CSF was due to hydrolytic decomposition and cellular entry and/or transcapillary loss across central nervous system capillaries. The drug exposure integral (C X t) of ACNU in the CSF after a "toxic dose low" of 0.8 mg in the dogs would achieve the equivalent of in vitro cell kills in excess of 3 logs for rat 9L and human glioma 126 cells. As a potential therapeutic agent for meningeal neoplasia, the major limiting factor may be that the CSF elimination of ACNU is rapid compared to its equilibration time from ventricle to spinal- and cerebral convexity-subarachnoid space. Based on these results, we have instituted clinical Phase I trials of intra-CSF ACNU. PMID- 3860289 TI - Cell cycle sensitivity of HL-60 cells to the differentiation-inducing effects of 1-alpha,25-dihydroxyvitamin D3. AB - A recently described system for monocyte-like differentiation of HL-60 cells was utilized to determine if the initiation of this pathway can be linked to a set of replicative cellular events. The standard induction system consisted of a 4-h exposure to 100 nM 1-alpha,25-dihydroxyvitamin D3 [1,25(OH)2D3] followed by determination of nonspecific esterase and phagocytic activity 24 h later. The cell cycle status was ascertained by the incorporation of [3H]thymidine and autoradiography. Studies in which cell cycle block in the G1/S phase boundary region was produced by a partial inhibition of DNA synthesis with thymidine, or sodium butyrate, showed that the exposure of such semisynchronous cultures to 1,25(OH)2D3 resulted in an increased proportion of differentiated cells. Conversely, blocking the cell cycle with vinblastine (G2/M block) or theobromine (mid-G1 block) inhibited the initiation of differentiation by 1,25(OH)2D3. Experiments in which the differentiated cells were examined for the cell cycle position at the time of the exposure to 1,25(OH)2D3 by [3H]thymidine labeling and autoradiography confirmed that the late G1 and early S phase cells are those which predominate in the differentiated fraction of 1,25(OH)2D3-treated HL-60 cultures. These results link pre- and early replicative cellular events to the induction of monocytic differentiation by 1,25(OH)2D3. PMID- 3860290 TI - Relationships between morphology, dissemination, migration, and prostaglandin E2 secretion by cloned variants of Lewis lung carcinoma. AB - Lewis lung carcinoma cells (LLC) were isolated and cloned from metastatic lung nodules of C57BL/6 mice or from a cultured parental LLC line. Their dissemination abilities were defined in vivo by their capacities to disseminate to the lungs following s.c. or i.v. injection into mice and in an in vitro model for tumor dissemination by their ability to migrate out of glass capillary tubes. Cloned LLC cells with an enhanced dissemination capacity exhibited a rounded morphology, were nonadherent during in vitro culture, and readily migrated out of capillary tubes. In contrast, clones not capable of dissemination were adherent and spread during in vitro culture and did not migrate out of capillary tubes. Production of prostaglandin E2 by these clones was measured by a radioimmunoassay. An inverse relationship was observed between the extent of migration and dissemination of clones and their ability to secrete prostaglandin E2 in vitro and in vivo. However, the prostaglandin E2 did not regulate the migration-dissemination capacities of LLC clones as inhibiting prostaglandin synthesis did not alter their capacity to migrate in vitro or to lodge in the lungs following i.v. inoculation into mice. PMID- 3860291 TI - Paradoxical effect of BW 301U, a lipophilic antifolate, on methotrexate inhibitable deoxyuridine incorporation by human hematopoietic cells. AB - The ability of methotrexate and BW 301U, a lipophilic folate antagonist, to inhibit tritiated deoxyuridine incorporation into acid-precipitable material by human bone marrow cells was evaluated before and after five sequential daily infusions of BW 301U. After in vivo BW 301U therapy, bone marrow cells from five of the six patients exhibited significantly reduced inhibition by 1 microM methotrexate in vitro, whereas the response to 1 microM BW 301U remained unchanged. Megaloblastic marrow morphology and decreased myeloid progenitor cloning efficiency were also observed following five daily BW 301U infusions of 21 and 71 mg/sq m, respectively. A similar reduction in the ability of methotrexate to inhibit tritiated deoxyuridine incorporation was also seen in HL 60 cells, a human acute promyelocytic leukemia cell line, after incubation in vitro with cytostatic concentrations of BW 301U for 3 days. Concomitant changes in the response to BW 301U did not occur. While it is premature to infer clinical significance from this preliminary observation of BW 301U-induced asymmetry in the response to subsequent antifolates, our results augment a growing body of evidence which suggests that lipophilic folate antagonists might be effective in the treatment of methotrexate-resistant neoplasms. PMID- 3860293 TI - Mathematical model of remission duration in acute myelogenous leukemia. AB - A mathematical model of disease-free survival in acute myelogenous leukemia is formulated in terms of proliferation of the leukemic stem cell compartment. A survivorship function is described which allows for the possibility that some patients may be cured of their disease and which captures the main features of experimental remission-duration curves. The model is used to investigate the effect of the amount of residual disease and the growth rate of the stem cell population on the length of remissions and the chances for cure. A method of comparing clinical trials, with potential for explanatory inference, is exemplified. PMID- 3860292 TI - Prevalence of antibodies to HTLV-III in AIDS risk groups in West Germany. AB - The prevalence of antibodies to human T-lymphotropic virus III was determined in acquired immunodeficiency syndrome (AIDS) risk groups by an enzyme linked immunosorbent assay and confirmatory tests in four different areas in West Germany. Twenty-four of 28 homosexual AIDS patients (86%), 24 of 33 homosexual patients with lymphadenopathy syndrome or AIDS related complex (73%), and 44 of 113 asymptomatic homosexuals at risk for AIDS (39%) were seropositive. In three groups of hemophiliacs, 8 of 35 in 1983 (23%), 25 of 65 in early 1984 (39%), and 19 of 23 in late 1984 (83%) showed positive results. Two sera from 36 polytransfused patients were also positive, whereas 36 selected blood donors, and 32 healthy laboratory and clinical personnel were all negative. Also no human T lymphotropic virus III antibodies were detected in sera of 187 prostitutes in the Munich area. PMID- 3860294 TI - Phase I evaluation of beta-2'-deoxythioguanosine in pediatric patients with leukemia. AB - Thirty-one pediatric patients with acute leukemia who had relapsed on either 6 mercaptopurine or 6-thioguanine were treated with beta-2'-deoxythioguanosine, which was administered as an iv infusion every 12 hours for three or six doses every 2 weeks. Severe nausea and vomiting and urate nephropathy were the dose limiting toxic effects. Therapeutic responses occurred in four of 24 children with acute lymphocytic leukemia and in two of seven with acute nonlymphoblastic leukemia. PMID- 3860295 TI - Phase II study of aclarubicin in previously untreated patients with advanced soft tissue sarcoma: a Southeastern Cancer Study Group trial. PMID- 3860296 TI - Amsacrine in refractory acute leukemia. AB - Thirty-two patients with heavily pretreated, relapsed acute leukemia were treated with amsacrine (120 mg/m2/day X 5). The 32 patients received a total of 41 courses of therapy, and 31 patients were evaluable for response. There were no complete remissions and only one partial remission (3 months) in an adult patient with acute lymphoblastic leukemia. Toxic effects included myelosuppression (100% of the patients), hyperbilirubinemia (41%), nausea and vomiting (41%), stomatitis (9%), and cardiac dysrhythmia (3%). We conclude that amsacrine as a single agent is not a useful treatment for relapsed, heavily pretreated adult and pediatric acute leukemia. PMID- 3860297 TI - High-dose cytarabine for the treatment of blastic phase chronic myelogenous leukemia. AB - High-dose cytarabine chemotherapy regimens were given to 22 patients for the treatment of blastic phase chronic myelogenous leukemia. Bone marrow aplasia occurred in 21 of these patients; in one patient the marrow was not cleared of blasts. In five patients (26%), blastic phase promptly recurred. Eight patients (37%) died of infection or hemorrhage during the period of marrow aplasia before bone marrow recovery. Seven patients achieved complete remission and one achieved partial remission, but the duration of the remission was brief [median, 98 days (range, 52-345)]. One patient received consolidation therapy with an additional course of high-dose cytarabine and maintained remission for 345 days. These results suggest that alternative approaches to the treatment need to be explored. PMID- 3860299 TI - Treatment of blast crisis of chronic myelogenous leukemia with vincristine, prednisone, and cytarabine. PMID- 3860298 TI - Phase II trial of 4-demethoxydaunorubicin in patients with advanced malignant melanoma. PMID- 3860300 TI - [4'-epidoxorubicin]. PMID- 3860301 TI - 5' end of HMG CoA reductase gene contains sequences responsible for cholesterol mediated inhibition of transcription. AB - Cholesterol homeostasis is maintained by feedback inhibition of transcription of the gene encoding HMG CoA reductase. To study this mechanism, we joined the 5' end of the hamster reductase gene to the coding region for chloramphenicol acetyltransferase (CAT). The chimeric gene produced high levels of CAT activity in mouse L cells; sterols suppressed expression by 70% to 90%. Sequences responsible for both promotion and inhibition of transcription were distributed over 500 bp extending 300 bp upstream of the reductase transcription initiation sites. Any sizable deletion within this region decreased CAT expression in vivo and CAT mRNA transcription in vitro. This region contains five hexanucleotide repeats (CCGCCC or GGGCGG) that occur in promoters of viral and cellular housekeeping genes. Every reductase-CAT plasmid that showed transcriptional activity also showed inhibition by sterols, indicating that the sites for promotion and inhibition of transcription are closely associated. PMID- 3860302 TI - [Long-term treatment using prostaglandin E2 in congenital heart defects with the pulmonary circulation being supplied by a patent ductus arteriosus]. PMID- 3860303 TI - [Accutane--a new human teratogen as a cause of a new syndrome]. PMID- 3860304 TI - Comparative murine metabolism and disposition of class II anthracycline antibiotics. AB - The metabolism and tissue distribution of aclacinomycin A (ACL), marcellomycin (MCM), and musettamycin (MST), three new anthracycline antibiotics, were compared after IV administration to mice. In plasma, total MCM- and ACL-derived fluorescence declined according to first-order kinetics, whereas an initial decline followed by a rebound was observed for MST. In plasma, MCM remained the predominant compound. ACL was eliminated more quickly, and was replaced by two metabolites, the reduced glycoside M1, and an aglycone. In the case of MST, two unidentified metabolites were observed in concentrations equivalent to that of the parent drug. The three drugs were distributed widely to organs, but only ACL achieved measurable concentrations in the brain. Initially, high concentrations of all three drugs were present in the lungs, but these decreased quickly to values similar to those present in the liver and kidneys. Intermediate concentrations of the three drugs were measured in heart and skeletal muscle. Splenic concentrations of all three drugs rose progressively, reaching a maximum at 8 h after injection in the case of ACL and MST, and at 24 h after injection in the case of MCM. Concentrations of the metabolites of MCM and MST were low in all organs except liver and kidney, where the aglycones 7-deoxypyrromycinone and bisanhydropyrromycinone were seen. The metabolism of ACL was extensive. Aglycones were dominant in the liver and kidneys, whereas reduced glycosides predominated in the spleen. These observations indicate that the murine pharmacology of these three structurally similar drugs differs markedly. PMID- 3860305 TI - N-sulfooxy-2-aminofluorene is the major ultimate electrophilic and carcinogenic metabolite of N-hydroxy-2-acetylaminofluorene in the livers of infant male C57BL/6J x C3H/HeJ F1 (B6C3F1) mice. AB - The hepatic DNA of 12-day-old male B6C3F1 (C57BL/6J X C3H/HeJ) mice given an i.p. dose of 0.06 or 0.11 mumol/g body weight of N-hydroxy-[3H]-2-acetylaminofluorene (N-hydroxy-AAF) contained at 9 h approximately 3 or 6 pmol of N-(deoxyguanosin-8 yl)-2-aminofluorene adducts per mg. Together the level of the two acetylated adducts N-(deoxyguanosin-8-yl)-2-acetylaminofluorene and 3-(deoxyguanosin-N2-yl) 2-acetylaminofluorene was less than or equal to 10% of this amount. The same doses of unlabeled carcinogen induced by 10 months a 100% incidence of hepatomas with averages of 10 and 15 hepatomas per mouse, respectively. Injection of 0.04 mumol/g body weight of pentachlorophenol (PCP) 45 min before the dose of N hydroxy-AAF decreased the number of adducts in the DNA by 90% and the average number of hepatomas per liver by 80-90%. As compared to their normal male littermates, male brachymorphic B6C3F2 mice, which are deficient in hepatic 3' phosphoadenosine-5'-phosphosulfate (PAPS), treated with N-hydroxy-AAF formed only 25% as many hepatic DNA adducts and developed only 10% as many hepatomas. Hepatic cytosols from 12-day-old B6C3F1 mice contained PAPS-dependent sulfotransferase activity for N-hydroxy-2-aminofluorene (N-hydroxy-AF), a previously unrecognized activity, as well as sulfotransferase activity for N-hydroxy-AAF; both activities were inhibited 60% by 1 microM and greater than or equal to 80% by 10 microM PCP. Cytosolic acetyl coenzyme A-dependent acetyltransferase activity for N-hydroxy AF, cytosolic N,O-acyltransferase activity for N-hydroxy-AAF, and microsomal deacetylase for N-hydroxy-AAF were not significantly inhibited by PCP under these conditions. The above data strongly indicate that N-sulfooxy-2-aminofluorene is the major ultimate electrophilic and carcinogenic metabolite of N-hydroxy-AAF in the livers of infant male B6C3F1 mice. PMID- 3860306 TI - Comparative effects of a complete tumor promoter, TPA, and a second-stage tumor promoter, RPA, on intercellular communication, cell differentiation and cell transformation. AB - The biological activities in vitro of the incomplete (second-stage) tumor promoter, 12-O-retinoyl phorbol-13-acetate (RPA), and the complete tumor promoter, 12-O-tetradecanoyl phorbol-13-acetate (TPA) were compared. The doses of TPA and RPA necessary to inhibit the specific binding of [3H]-phorbol-12,13 dibutyrate ([3H]PDBu) to BALB/c 3T3 cells (50% inhibition doses; ID50; 8-13 ng/ml) were very similar; however, RPA was less potent than TPA in inhibiting [3H]-PDBu binding to Friend erythroleukemia cells (FELC). Intercellular communication between BALB/c 3T3 cells, measured by transfer of microinjected fluorescent dye (Lucifer Yellow), was inhibited by RPA as well as by TPA; TPA was about five times more potent than RPA. RPA also inhibited FELC differentiation induced by hexamethylene bisacetamide (HMBA) but not the differentiation of a TPA resistant clone. The dose-responses of these two compounds in inhibiting differentiation of both TPA-sensitive and resistant FELC were very similar. When TPA and RPA were compared in their promoting activity of in vitro cell transformation of BALB/c 3T3 cells initiated with 3-methylcholanthrene (MCA, 0.1 microgram/ml), both TPA and RPA significantly increased the yield of morphologically transformed foci, and RPA was approximately 10 times more potent than TPA. These results suggest that RPA and TPA share many common in vitro biological effects and that these in vitro studies do not allow us to delineate clearly the effect of a second-stage tumor promoter from that of complete tumor promoters such as TPA. PMID- 3860307 TI - Modeled velopharyngeal orifice area prediction during simulated stop consonant production in the presence of increased nasal airway resistance. AB - This project examined modeled velopharyngeal orifice area estimation under conditions simulating voiceless stop consonant production in the presence of nasal airway obstruction. The results indicated that accurate estimates of velopharyngeal orifice area can be obtained using Warren's hydrokinetic equation during aerodynamic events like those known to exist during speech in the presence of increased nasal airway resistance. These findings provide support for clinical and research use of Warren's pressure-flow approach to investigate velopharyngeal function during speech production. PMID- 3860308 TI - Predictions of modeled palatopharyngeal port openings under conditions simulating pharyngeal flap reconstruction. AB - This study examined the estimation of modeled palatopharyngeal orifice areas under conditions similar to those created by pharyngeal flap reconstruction. Results indicated that accurate estimates of the palatopharyngeal orifice area can be obtained using Warren's pressure-flow approach when the calculated area is actually the combined area of the lateral palatopharyngeal port openings. Our findings lend additional support to the view that pressure-flow techniques can provide objective information about the degree to which surgical procedures provide palatopharyngeal competence for speech. PMID- 3860309 TI - Effectiveness of genetic counseling for families with craniofacial anomalies. AB - Questionnaire data about genetic counseling experiences are presented from 37 parents and 25 patients who were evaluated. The subjects' perceptions vary regarding the cause of cleft lip or palate or both. More positive feelings about the birth defect are expressed after the subjects receive counseling. However, 25 percent of the sample express negative feelings about the birth defect after counseling. Ninety percent of the subjects indicate that counseling should occur within the first 3 months of the birth of the infant with a cleft. The subjects agree significantly on the important components of genetic counseling. The authors conclude that effective counseling includes (1) providing facts, alleviating guilt, and dispelling misperceptions; (2) discussing decision making; and (3) facilitating the coping process. Implications for further research and a protocol for counseling are suggested. PMID- 3860310 TI - Longitudinal evaluation of articulation and velopharyngeal competence of patients with pharyngeal flaps. AB - In this study, 129 patients with cleft palate who had pharyngeal flaps were evaluated longitudinally. Articulation scores improved approximately 15 percent following surgery, and by age 16 the majority of subjects achieved velopharyngeal competence and 90 percent correct articulation. The findings also demonstrated that the risk of requiring secondary management increased with the severity of the cleft. In addition, a higher percentage of patients who had received a primary Von Langenbeck procedure required secondary management than did patients who had the Wardill primary palatoplasty. Age at time of the pharyngeal flap operation did not emerge as a critical factor in speech outcome. PMID- 3860311 TI - Congenital hemifacial hyperplasia: an embryologic hypothesis and case report. AB - Congenital hyperplasia is a developmental disorder characterized by marked unilateral asymmetry. The structural disproportions from one side to the other far exceed variations commonly seen in the normal population. Classically, as first described in 1836, the overgrowth of tissue is restricted to one-half of the body, including the extremities. In other cases the hyperplastic enlargement involves segmental areas of the body, such as the hemifacial skeleton and an extremity. A case report is presented, and the clinical characteristics of 192 cases of congenital hyperplasia in the literature are briefly reviewed. Use of the word hyperplasia to describe the condition (rather than hypertrophy) is encouraged. The authors propose a new embryologic hypothesis: asymmetrical development of the neural fold and hyperplasia of the neural crest cells are said to form the basis for the disorder. The rewards, risks, and limitations of reconstructive surgery over a 10-year period are discussed. PMID- 3860312 TI - Eustachian tube function in the rhesus monkey model of cleft palate. AB - Past studies showed that surgical clefting of the palate resulted in impaired active eustachian tube (ET) function and otitis media with effusion (OME) in a Rhesus monkey model. In the present study, this model was used to evaluate the effect of palatal healing on ET function in eight juvenile Rhesus monkeys. Following insertion of bilateral tympanostomy tubes and collection of baseline ET function data, the soft palate was surgically clefted to the right of the midline, and bilateral ET function tests were repeated weekly until the cleft had healed. Results showed that tubal function was severely compromised on the right side but was relatively unaffected on the left side following surgical clefting; active muscular-assisted function was more affected than the passive function; and the abnormal function was reversible with healing of the cleft. PMID- 3860313 TI - A comparison of craniofacial growth in normal and cleft palate rhesus monkeys. AB - In an attempt to better understand the etiology of middle ear disease in humans with cleft palate, a rhesus monkey model was developed. In this study, the model was extended to deal with the specific problem of otitis media in infants with cleft palate. Fifteen rhesus monkeys, Macaca mulatta, were utilized in the present investigation. Soft palate clefts were surgically produced in ten of the subjects, and five served as unoperated controls. Longitudinal data on middle ear status and craniofacial growth were collected until an approximate age of 2 years. Comparisons of linear regression coefficients representing size and rates of growth of craniofacial dimensions were made between operated and control group animals. No significant (p less than .05) differences were found between the groups. It is concluded that surgically produced clefts of the soft palate alter middle ear function and produce ear disease but do not change the rates of growth of the measured components of the craniofacial complex. PMID- 3860314 TI - Custom-fabricated masks for aeromechanical measures. AB - A technique is described for the construction of custom fabricated face masks designed for use in aeromechanical studies of individuals with speech disorders, such as those associated with craniofacial defects. The wax-elimination method of mask fabrication described herein is similar to routine dental laboratory procedures. Materials employed are heat-cured acrylic resin for the body of the mask and heat-cured resilient liner for the tissue contacting surface of the mask. PMID- 3860315 TI - Quintuplets with clefts: follow-up at 5 years. AB - Follow-up observations are presented of a set of quintuplets at 5 years of age. Three of the children were born with different degrees of oral clefting. Height and weight comparisons between siblings with clefts and those without reveal that the most severely affected children lagged in their height measurements at the age of 5 years. This may indicate need for special awareness when caring for such children. A relative constriction of the anterior segment of the maxillary dental arch in two of the affected siblings may reflect a possible effect from previous surgical intervention. PMID- 3860316 TI - Respiratory arrest in an infant with cleft lip. PMID- 3860317 TI - Simplified velopharyngeal orifice area estimation. PMID- 3860318 TI - Congenital 11 beta-hydroxysteroid dehydrogenase deficiency associated with juvenile hypertension: corticosteroid metabolite profiles of four patients and their families. AB - Four children with 11 beta-hydroxysteroid dehydrogenase deficiency are described. All patients had severe hypertension, hypokalaemia, and low plasma aldosterone and renin activities. Two of the patients were siblings and two were unrelated. The most noticeable biochemical feature of these individuals was the extremely low excretion of cortisol metabolites containing an 11-carbonyl group compared to the excretion of the 11 beta-hydroxyl containing metabolites. Although this condition is readily diagnosed in affected individuals by urinary steroid analysis, carriers of the defect do not differ from normal in their urinary steroids. Both parents of the affected siblings had normal 11-oxo-steroid/11 beta hydroxysteroid ratios under baseline conditions and the lesions could not be revealed by ACTH administration. PMID- 3860319 TI - Detection at amniocentesis of a maternally inherited X;Y translocation. AB - G banded chromosomal analysis of cells from a routine amniocentesis revealed a Y to X translocation in the fetus. The same unbalanced translocation was found in the mother who was disproportionately short. H-Y antigen titers in the mother were intermediate and steroid sulfatase activity was in the normal female range. At birth the baby exhibited few dysmorphic features but appeared to have short limbs. PMID- 3860320 TI - Human bronchoalveolar macrophage heterogeneity demonstrated by histochemistry, surface markers and phagocytosis. AB - Human alveolar macrophages (AM) were obtained by bronchoalveolar lavage from 18 patients with a variety of conditions. For each patient the percentages of AM showing the following properties were determined: (1) staining for the enzymes non-specific esterase (NSE) and acid phosphatase (ACP); (2) in vitro phagocytosis of Candida guillermondii; (3) expression of cell surface markers detected by two monoclonal antibodies (MoAb) (1B5 and DA2) and two anti-monocyte/macrophage MoAb (UCHMI and RFD2); and (4) simultaneous phagocytosis of C. guillermondii and staining with the MoAb. In all patients the majority of AM were found to be Ia positive (90 +/- 10%) ACP positive (100%) and NSE positive (97 +/- 4%). In contrast a smaller proportion were UCHM1 and RFD2 positive (77 +/- 11%, 68 +/- 12%) and less were phagocytic (37 +/- 17%). Whilst the total percentage of cells staining with the MoAb was unaltered by phagocytosis, the proportion of UCHM1 or RFD2 positive cells was significantly higher in the phagocytic population than in the non-phagocytic population (90% and 85%, as opposed to 65% and 55%, P less than 0.001). Thus only a proportion of Ia positive AM expressed monocyte/macrophage antigens and were phagocytic. Such heterogeneity may reflect different stages of macrophage maturation or the existence of macrophage subpopulations with functionally distinct roles in airways immunity. PMID- 3860321 TI - Gallium-67 citrate whole body scanning for the localization of infected vascular synthetic grafts. AB - Ga-67 (3 mCi) was used in 11 patients to diagnose and locate an eventual infection of their synthetic vascular prostheses. In seven cases, an area of gallium uptake was found and the infection confirmed by surgery and bacteriology. In the remaining four cases, no uptake of gallium was found and the absence of infection was confirmed. PMID- 3860322 TI - Abnormal splenic uptake of gallium-67 citrate in a case of infectious mononucleosis. AB - A case of fever of undetermined origin (FUO) demonstrated abnormal intense concentration of Ga-67 citrate in the spleen. Initial workup demonstrated two negative mono spot tests for infectious mononucleosis (IM) but, on hospital day 2, a repeat mono test was positive. The diagnosis was subsequently confirmed by rising heterophilic antibody titers. Six weeks after hospital discharge, repeat Ga-67 citrate imaging demonstrated absence of abnormal splenic activity. To our knowledge, this phenomenon has not been previously described in IM. In the appropriate clinical setting, intense splenic uptake of Ga-67 should alert the clinician to include the possibility of IM in the differential diagnosis. PMID- 3860323 TI - Scintigraphic dissociation of reticuloendothelial and hepatocyte function in chronic vitamin A hepatotoxicity. AB - A discordant hepatic uptake between Tc-99m sulfur colloid and Ga-67 citrate has occurred in an adult patient with hepatotoxicity due to hypervitaminosis A. The authors believe this is a scintigraphic phenomenon related to the characteristics of the radiopharmaceuticals used and does not necessarily represent a true dissociation of various cellular functions of the liver. PMID- 3860324 TI - Gallium-67 citrate localization in disseminated sporotrichosis. AB - A 25-year-old woman demonstrated Ga-67 citrate accumulation within a facial cutaneous lesion and two subcutaneous nodules within the right lower extremity. Cultures of the facial lesion and one of the subcutaneous nodules grew Sporothrix schenckii. Ga-67 citrate uptake has not been reported previously with this fungal infection. Ga-67 citrate scintigraphy was helpful in defining the extent of the disease, following its course, and determining the response to therapy. PMID- 3860325 TI - Gallium-67 imaging in dilated cardiomyopathy secondary to viral infection. PMID- 3860326 TI - Gallium-67 citrate imaging in the evaluation of unilateral absence of pulmonary perfusion-ventilation. PMID- 3860327 TI - Metastatic osteogenic sarcoma involving the left ventricle. Identification with gallium-67 citrate. PMID- 3860328 TI - Self-inflicted injuries in childhood. A review and diagnostic approach. AB - Eleven clinical and behavioral syndromes that can result in self-inflicted injury in childhood and adolescence are reviewed and classified. The causes and remedies of such injuries vary both among and within these 11 classes. Pediatricians should be alert to the possible presence and meaning of self-injury. PMID- 3860329 TI - Toothbrushing duration in 60 uninstructed young adults. AB - 60 uninstructed adults aged 18-22 yr (agricultural students) brushed their teeth and were recorded on video tape. From repeated viewing of the tapes, the total brushing time and the numbers of strokes used in each of 16 areas of the mouth were obtained for each subject. The mean (+/- SD) brushing time was 33.0 s (+/- 12.0); the mean number of strokes employed by each subject was 302 (+/- 122). More strokes were used to brush the mandibular than the maxillary arch, labial and buccal than occlusal areas, and occlusal than lingual areas. The results are compared with those from a similar study in uninstructed schoolchildren, reported previously. PMID- 3860330 TI - Immigrants and a public oral health care service for children in Denmark. AB - The present study was conducted to compare level of dental caries, treatment pattern and contact patterns with the Child Oral Health Care System of children of immigrants. The study comprised 239 Turkish, 117 Pakistani and 91 other immigrants and a control group of 359 Danish children. Data were extracted from the dental records in the clinic where they were treated. All groups of immigrants showed more caries in the primary dentition and less caries in the permanent dentition than Danish children of comparable age. For preschool children a higher number of broken appointments were found for the immigrants as well as a higher number of appointments which were interrupted due to management problems. The consequences for planning preventive and restorative programs for children of immigrants are discussed. PMID- 3860331 TI - Active-involvement principle in dental health education. AB - A basic problem in dental health education (DHE) is that the effect usually disappears shortly after the termination of a program. The purpose of the present study was to obtain long-term effect of a DHE-program by emphasizing the active involvement of the participants. The sample comprised an experimental and a control group, each of 68 unskilled workers, aged 18-64. Active participation was obtained by various means: Teaching was carried out in pre-existing peer groups, the participants' own goals and needs were included, the traditional dentist patient barriers were excluded, the traditional dentist-patient roles were changed, and the sessions were repeated. No dental treatment was included. The control group did not participate in the DHE-programme. Plaque (PII) and gingivitis (GI) were scored before the program, immediately after, and 6 months and 31/2 yr after the last session. In the experimental group PII and GI decreased significantly from 1.30 and 1.42 at baseline to 0.39 and 0.97 6 months after the program, and 0.45 and 0.79 31/2 yr after the termination of the program. It is suggested that the reason for the long-term effect obtained in the present study was the use of the principle of active involvement of the participants in the DHE-program. PMID- 3860332 TI - Stimulating dental attendance in the Netherlands: comparison of three conceptual frameworks. AB - A field-experiment was done to study the differential effectiveness of three conceptual approaches to stimulate the demand for dental care. Persuasive messages were based on Ajzen & Fishbein's theory of reasoned action, on the health-belief model, and on the notion that knowledge of rights and obligations is a prerequisite for seeking dental care. All messages included an application form and a return envelope. Subjects were 269 members of Amsterdam health insurance companies. They had not received regular dental treatment and/or a certificate of dental fitness for at least 21/2 yr. Subjects received one of the three messages, an application form only (with a return envelope), or no message at all. Applying for treatment and acquiring a dental certificate were the behavioral measures. In all, 47.4% of insured who received message and/or application form applied for treatment. No control subjects applied. Fifteen months later 70% of the applicants had obtained a dental certificate. A differential effectiveness of the three messages was absent. Contrary to our expectations the condition of no message, application form only proved as effective as the message conditions. Results furthermore indicate that the main reason for not applying concerns fear of dental treatment. Whether or not the subject applied did not correlate with his knowledge of rights and obligations, sex, age, level of education, and occupational status. PMID- 3860333 TI - Self-reported health behavior and dental knowledge of a migrant worker population. AB - In conjunction with operation of a summer school-based dental program in Michigan, 101 children from migrant families, primarily Mexican-American, completed questionnaires relating demographic background, past dental experience, and knowledge of caries preventive methods. A smaller number of available mothers were asked these questions plus others relating to family dental problems, diet and knowledge of periodontal disease. Adults and children reported similar demographic backgrounds. Most children (68.7%) listed brushing as the best way to prevent cavities as did 60% of the mothers. Less than 2% of the children considered use of fluoride in any form as the best way to prevent cavities and only two of 20 mothers mentioned fluoride in this context. Members of this selected population were weak in their knowledge of the relation between a sweet diet and caries, the relation between oral hygiene and periodontal health, and the role of fluorides in caries prevention. PMID- 3860334 TI - Effects of school-based dental health education on knowledge, attitudes and behavior of adolescents in San Francisco. AB - A field experiment was done to evaluate the short term effects of a series of classroom preventive dentistry presentations on dental health knowledge, attitudes and reported behavior of adolescents. Eight hundred fifty-four boys and girls, 12-14-yr-old students enrolled in San Francisco middle schools, were randomly divided into experimental and control groups. A written test composed of questions relating to factual dental health knowledge, home care practices, and attitudes to dental health was answered by the experimental group at the beginning and end of the educational intervention and at comparable time intervals by the controls. Results showed a significant increase in knowledge for the experimental group (P less than 0.001), as compared with the control group. Pre-existing attitudes were generally positive for most subjects. Although the educational intervention resulted in no significant differences between the two groups with regard to attitude, there was a significant positive change in attitude within the experimental group (P less than 0.01) from pre- to posttest. In addition, there was a significant increase in the frequency with which the girls in the experimental group reportedly used the toothbrush (P = 0.01) and dental floss (P = 0.01). PMID- 3860335 TI - Effects of dental health education for mothers with young children in London. AB - Dental health education for mothers with young children is thought to be capable of achieving a high standard of dental health for these children. This study considers the dental health of a sample of 5-yr-old children whose mothers were given dental health education at an early stage in their child's life. The dental health education was given to one group during home visits and to a second through leaflets sent by post. Comparisons were made with a third group of children whose mothers had been randomly selected to form a control group. Sixty nine percent of children whose mothers were given advice at home were caries free, compared to 58% of children in the control group. Scores for gingivitis were also significantly lower in the first group. No significant differences in disease levels were seen between children whose mothers had been sent leaflets through the post and those in the control group. In relation to the use of fluoride supplements, 25% of the children whose mothers had been given personal advice received fluoride supplements regularly throughout the period of the study. Children of these highly motivated mothers showed less caries (83% were caries free) and lower levels of gingivitis than children who had never received supplements. PMID- 3860336 TI - Dimensionality of dental anxiety measurements. AB - A survey among 620, 30-40-yr-olds, was carried out in order to measure dental anxiety with Corah's DAS, Weiner's AALC, and some other questions on anxiety, among which was the duration of psychophysiologic responses prior to a dental appointment. The data were analyzed with a Non Metric Components analysis. The DAS turned out to be unidimensional. The AALC on the other hand appeared to contain four components. A second stage analysis comprising the DAS component, the four AALC components, and the remaining variables revealed a two-dimensional structure, of which only the first component is dentistry related. This component showed better differentiation of the respondents than with DAS or AALC alone. Part of AALC's questions and a question about anxiety in daily life proved to be superfluous for measuring dental anxiety. It is concluded that dental anxiety and anxiety in general have to be measured with questions covering different aspects. PMID- 3860337 TI - Dental status and dental needs of an elderly population in Israel. AB - Dental status and dental needs of a geriatric population were evaluated among 304 elderly people living in old age homes and in their own homes in Jerusalem, Israel. A total of 181 people (59.5%) were edentulous in both jaws and an additional 3% were edentulous in one jaw. Almost all dentures (95%) were considered to be unsatisfactory. In all, 1809 h were found to be necessary for treating cavities and prosthetic needs of this population and an additional 214 h for periodontal treatment which did not include surgery. In conclusion the dental status of this population was poor and dental needs were high. Since dental treatment is so expensive it is believed that this population would receive almost no treatment but for the future emphasis should be put into primary and secondary prevention from very young ages so that needs of this population as they get older would dramatically decrease as compared to the need of this study population. PMID- 3860338 TI - Longitudinal study of prevalence of enamel lesions in a fluoridated and non fluoridated area. AB - The aim of this study was to examine longitudinally the effect of water fluoridation on the prevalence of enamel lesions in children 7-18 yr of age. 93 children in Tiel (1 ppm F-) and 103 children in Culemborg (0.1 ppm F-) were examined every other year at 7, 9, 11, 13 and 15 yr of age. A supplementary examination was carried out when these children reached the age of 18. Children in Tiel had access to water fluoridation from birth. The total number of lesions, including enamel lesions, on the buccal as well as on the occlusal surfaces was approximately the same in both areas in children 15 and 18 yr of age. Approximal lesions were scored on standardized bitewing radiographs. A large proportion of enamel lesions could not be detected on radiographs. In a fluoridated area a high percentage of all lesions remain in the stage of enamel caries lesions. On buccal surfaces 93% and on approximal surfaces 86% of all lesions had not progressed into the dentin. In Culemborg these percentages were 65 for approximal as well as for buccal surfaces. At the initiation of lesions, at younger ages, only a small retardation of the process was observed, but caries progression beyond the stage of enamel caries was markedly reduced in the fluoridated area. No pre-eruptive effect could be observed if the total number of lesions, including enamel lesions, from Tiel and Culemborg were compared. PMID- 3860339 TI - Prevalence of developmental defects of enamel and dental caries in New Zealand children receiving differing fluoride supplementation. AB - A survey of the prevalence of dental caries and developmental enamel defects in 666 New Zealand children aged 9 years and with differing histories of fluoride supplementation was carried out in 1982. In the LF (low fluoride) group 22.8% of children had diffuse white opacities compared with the WF (water fluoridation) group, 36.7%, and the CT (continuous use of fluoride tablets) group 49.4% (P = 0.0018). When the tooth prevalence was determined, the differences were more marked with 4.9% of teeth affected in the LF group and 24.7% in the CT group. Dental caries prevalence in the fluoride history groups displayed an inverse relationship with fluoride supplementation, the LF group had a DMFT of 2.4, the WF group, 1.7 and the CT group, 1.2. The prevalence of both diffuse opacities and of dental caries in the PT group where tablets had been used to 5-6 yr of age was anomalous. The survey confirmed that diffuse opacities occur in children with a low fluoride intake but the prevalence increases in groups of children given fluoride supplements. PMID- 3860340 TI - Caries and total extraction in a medium-sized city in the Netherlands. AB - In 1982 a combined sociodental research project was started in the city of Groningen in order to gain insight into the dental and social reasons for total extraction. 91% of the dentists in the city participated in this study by collecting the extracted teeth, filling out a questionnaire and asking their patients to fill out another questionnaire concerning the behavioral aspects of total tooth loss. 78% of the 134 patients returned the questionnaire. In this article the caries status in relation to the social background and dental attendance pattern has been described. The mean age at the time of extraction was 44.2 yr. The patients were a good cross-section of the Dutch population as regards education level, type of health insurance and sex. The average number of teeth was 14.2. The average DEMFT value was 22.8. Although regular attenders had less D-teeth than irregular attenders they had an average of 3.5 teeth with active caries. Regular attenders had more F-teeth but less sound teeth than irregular attenders. The contribution of the dental health care system to the dental health of the population is discussed. PMID- 3860341 TI - Dental caries and dental treatment in the primary dentition in an industrialized South African community. AB - This paper reports an examination of dental caries in the primary dentition of 2 5-yr-old white children in an industrialized South African city, in 1981 and 1983. There was a decrease in dental caries prevalence over the 2-yr period accompanied by an increase in dental treatment in 3-5-yr-olds. Treatment, however, remains low. Socioeconomic status had a varying effect on the trends, but in general there was a greater reduction in dental caries in the lower socioeconomic areas. PMID- 3860342 TI - Dental caries in preschoolchildren in Gizan, Saudi Arabia. AB - 296 preschoolchildren attending the pediatric clinic at Gizan Hospital were examined over a period of 3 months. Caries was recorded using the criteria described by WHO. One third of the children had untreated caries and none of the children had received any restorative dental care. A strategy for development of preventive dental services for this age group is discussed. PMID- 3860343 TI - Traumatic dental injuries in schoolchildren from Santo Domingo. AB - The purpose of this retrospective study was to analyze, by age and sex, 1) the prevalence of traumatic injuries to permanent incisors and canines, and 2) their distribution according to type in schoolchildren from the city of Santo Domingo, in the Southern part of the Dominican Republic, which is located in the Caribbean Archipelago. The sample consisted of 1200 children aged 6-17 yr enrolled in eight public and private schools. Garcia-Godoy's classification for traumatic injuries was used. The prevalence of injuries was 12.2% (13.1% in boys and 11.2% in girls). The largest number of injuries was presented by the 14-yr-old children (17.4%) followed by the 13- and 12-yr-olds (15.7% and 11.7%, respectively). More boys injured their teeth than girls (not significantly) with a boy-to-girl ratio of 1.1:1. The most common type of injury in both sexes was enamel-dentin fracture, followed by enamel fracture. PMID- 3860344 TI - Relations between TMJ pain dysfunction syndrome (PDS) and some psychologic and biographic variables. AB - A total of 211 persons with a complete natural dentition were examined for signs and symptoms of the TMJ pain dysfunction syndrome. They also answered the questions of the Dutch version of the Hopkins Symptoms Check List (HSCL). Schooling, age and sex were also registered. Signs and symptoms of the TMJ pain dysfunction syndrome proved to be highly correlated to the psychologic and somatic scales of the HSCL with one exception: maximal mouth opening. The total palpation score proved to be a reliable, sensitive, easy and fast predictor for the severity of the TMJ pain dysfunction syndrome. PMID- 3860345 TI - Commissural lip pits in Israeli Jews of different ethnic origin. AB - The prevalence of commissural lip pits in a group of 2462 Israeli Jews was determined, and a relation of commissural lip pits to ethnic background was noted. Results showed the presence of commissural lip pits in 17.4% of the entire sample; 9.7% were unilateral and 7.7% were bilaterally located. The Ashkenazi group showed a significant higher prevalence of commissural lip pits (19.4%) when compared to the prevalence in the Sephardic group (14.1%) and the Eastern group (21.1%). PMID- 3860346 TI - Subtyping eating disorders. PMID- 3860347 TI - Prostaglandin F2 alpha-induced estrus in open cows and presumed abortion in pregnant cows with unobserved estrus in a herd monitored by milk progesterone assay. AB - Data were obtained in a large Florida herd of about 1800 Holstein cows. All cows were inseminated by the herdsman who did the pregnancy checks and who also administered drugs. The herdsman injected 103 cows with prostaglandin F2 alpha during the time this herd was under continuous observation by the authors who were conducting an unrelated research project. These cows consisted of 86 open (never bred) cows which had no estrus observed during the first 70 days postpartum, or no second estrus observed within 30 days after a previous estrus, and 17 cows previously inseminated. Two-thirds (57) of the 86 open cows were in estrus within 4 days. The 17 previously inseminated cows appeared to be pregnant, based upon progesterone profiles, when these were inadvertently given prostaglandin F2 alpha by the herdsman. Progesterone declined in all cows and they were in estrus in 7 +/- 4 days (mean +/- standard error). This result of presumed abortion reflects the luteolytic effectiveness of the drug and the importance of instructing any laymen users to follow necessary precautions to avoid undesirable effects. PMID- 3860348 TI - Computed tomography of parosteal osteosarcoma of the rib. AB - The computed tomography findings in a case of radically resected parosteal osteosarcoma of the rib are reported. Computed tomography disclosed a huge ossifying mass with lobulated structure, ossifying rim, linear lucent zone between tumor and cortex, destruction of the affected rib cortex, and intramedullary involvement. These findings are specific to advanced parosteal osteosarcoma. PMID- 3860349 TI - [Further experiences with the infrahyoid myocutaneous flap in reconstruction after radical surgery of cheek and palate cancer]. PMID- 3860350 TI - [Etiology of the TMJ syndrome]. PMID- 3860351 TI - [Median palatine suture fracture: a type of maxillary fracture with report of 15 cases]. PMID- 3860352 TI - [Relation between tetracyclines and tooth discoloration and dental caries]. PMID- 3860353 TI - [Polygenic inheritance of cleft lip and cleft palate]. PMID- 3860354 TI - [Oral protozoiasis]. PMID- 3860355 TI - [Clinical analysis of 261 cases of oral leukoplakia]. PMID- 3860356 TI - [Clinicopathological study of verrucous carcinoma of oral mucosa]. PMID- 3860357 TI - [Preliminary study of sister chromatid exchanges and chromosomal aberrations in the lymphocytes of patients with leukoplakia and oral carcinoma]. PMID- 3860358 TI - [Influence of palatoplasty on the maxillary development of cleft palate patients]. PMID- 3860359 TI - [Relation between the balance of protrusive occlusion and protrusive inclination of the condylar guidance (path) of the complete denture]. PMID- 3860360 TI - [Clinical analysis of bruxism]. PMID- 3860361 TI - [A study of lateral root canals in the first and second molar]. PMID- 3860362 TI - [Microvascular casts of the mucous membrane of the tongue in the mature fetus by scanning electron microscopy]. PMID- 3860363 TI - [Effect of intra-articular injection of prednisolone in treating organic destruction in the TMJ syndrome]. PMID- 3860364 TI - [Treatment of TMJ syndrome by detaching the lateral pterygoid muscle from the lateral pterygoid plate]. PMID- 3860365 TI - [Small doses of Ara-C in the treatment of acute myeloid leukaemia]. PMID- 3860366 TI - Redesigning enzymes by site-directed mutagenesis. AB - The systematic alteration of protein structure has now become possible with genetic engineering. Recent developments in techniques for the chemical synthesis of DNA fragments and in recombinant DNA technology have enabled the facile modification of proteins by highly specific mutagenesis of their genes. Enzymes with novel properties may be produced in large quantities from the mutant genes. Kinetic analysis of the mutant enzymes can be combined with high-resolution structural data from protein X-ray crystallography to provide direct measurements on the relationships between structure and function. In particular, the strength and nature of enzyme-substrate interactions and their roles in catalysis and specificity may be studied. The tyrosyl-tRNA synthetase from Bacillus stearothermophilus is being systematically analysed by site-directed mutagenesis. A fine-structure analysis is revealing the subtle roles of hydrogen bonding in catalysis and specificity. Modification of the residues that hydrogen-bond with ATP and tyrosine shows how the energetics must be analysed in terms of an exchange reaction with solvent water. Based on this idea, and structural data, an enzyme of vastly improved enzyme-substrate affinity has been engineered. There thus appear to be real prospects of engineering proteins of new specificities, activities and structural properties. Direct information is also being gathered on the nature of enzyme catalysis. For example, the catalysis of formation of Tyr AMP from Tyr and ATP does not appear to use the classical mechanisms of acid-base or covalent catalysis. Instead, there just appears to be a binding site that stabilizes the high-energy pentacoordinate intermediate in the reaction. PMID- 3860367 TI - The design of new enzyme active sites for the catalysis of specific chemical reactions. AB - Using appropriately designed coenzyme analogues, new active sites can be introduced into naturally occurring enzymes by the chemical modification of specific residues. Catalytic activities very different from those of the corresponding native enzymes can be observed in the resulting semisynthetic enzymes. Covalent modification of the SH group of the active site residue Cys-25 of papain with flavins like 8-bromoacetyl-10-methylisoalloxazine converts the enzyme into a highly effective oxidoreductase. Thus, the catalytic versatility of existing enzymes can be enhanced through 'chemical mutation' of the active site. PMID- 3860368 TI - [Measurement of PGF 2 alpha in the cerebral cortex of rats in experimental cerebral ischemia]. PMID- 3860369 TI - Detection of minimal disease in acute leukemia using flow cytometry: studies in a rat model for human acute leukemia. AB - The study was made using a rat model for human acute myelocytic leukemia (BNML), which shows striking similarities with human acute myelocytic leukemia (AML). A monoclonal antibody (MCA-Rm124), raised against BNML cells, allowed the recognition of the leukemic cell fraction. The discriminative capacity of the monoclonal antibody is based on differences in labeling intensities between normal and leukemic cells. After i.v. cellular transfer of leukemia, the growth of the leukemic cell population in the bone marrow, the liver, and the spleen was monitored using MCA-Rm124 and flow cytometry. For the bone marrow and the liver, a clonogenic assay for leukemic cells was used to quantify the cell content in these organs. A good correlation was found between the bioassay-derived data and the flow-cytometry-derived data. The doubling times of the leukemic cell population were not equal for the two organs studied, indicating that a number of different processes contribute to the net cell production per organ. Apart from their application in the detection of residual leukemia, monoclonal antibodies might be employed in the analysis of the growth kinetics of the "invisible" leukemic cell population. PMID- 3860370 TI - [Selective cytotoxic effect of immunotoxin on erythroid tumor cells of mice]. PMID- 3860371 TI - [Constantly elevated serum CA 19.9 in a healthy female patient]. PMID- 3860372 TI - [Retinoids today]. PMID- 3860373 TI - Relationship of recruitment strategies to applicant pool size in baccalaureate dental hygiene program. PMID- 3860374 TI - Dental anatomy: a comparison of two teaching methods. PMID- 3860375 TI - Interdisciplinary education in dental hygiene: a pilot project. PMID- 3860376 TI - [Polarographic characteristics of DNA preparations isolated from the tissues of rats with Shvets' erythromyelosis]. AB - The polarographic method is used to show that the DNA preparations from the liver, spleen and tumour of leukemic rats in contrast to these preparations from the liver and spleen of the control ones possess a sharply marked electrochemical activity manifested by two peaks (peak I and peak II) in the region of the negative potential values. Peak I located in the region from--1.05 V to--1.30 V is determined by the activity of adenine and cytosine amine groups whereas peak II (from--1.45 V to--1.60 V) is caused by a protein component. PMID- 3860377 TI - Endodontic treatment decisions: a study of the clinical decision-making process. PMID- 3860378 TI - Effect of electric current and silver electrodes on oral bacteria. PMID- 3860379 TI - Transient hemiparesis following mandibular nerve anesthesia. PMID- 3860380 TI - Successful self-replantation of avulsed tooth with 42-year follow-up. PMID- 3860381 TI - Dietary control of chronic maxillofacial pain. PMID- 3860382 TI - The role of the necrotic periodontal membrane in cementum resorption and ankylosis. PMID- 3860384 TI - Tri-national meeting on electron microscopy 1985. Konstanz, 15-21 September 1985. Abstracts. PMID- 3860383 TI - The use of synthetic oligonucleotides with universal templates for rapid DNA sequencing: results with staphylococcal replicon pC221. AB - A rapid sequencing strategy has been devised and applied to determine the complete nucleotide sequence (4555 bp) of Staphylococcus aureus plasmid pC221. The entire replicon was cloned into phage M13mp8 in both orientations to provide 'universal templates' for primed DNA synthesis from internally-sited oligonucleotide primers. The latter were synthesized by a modification of a recently described paper disc method which employs phosphotriester chemistry. Less than 4 weeks was required for the synthesis of the required primers and for the sequencing experiments. Plasmid pC221 bears a substrate-inducible chloramphenicol acetyltransferase (CAT) gene that shares much homology with its counterparts in pC194 (S. aureus) and the chromosomal cat-86 gene of Bacillus pumilus, both in coding regions and upstream sequences believed to be involved in the induction phenomenon. A second plasmid-specified protein, REP D, has an 81% identity in the REP C polypeptide that has been shown to be essential for the replication of staphylococcal plasmid pT181. The 5' flanking region of rep D shows striking similarities with its counterpart in rep C that determines copy number and incompatibility. The nucleotide sequence reveals two additional and overlapping open reading frames that may specify proteins that play roles in plasmid relaxation and transfer. PMID- 3860386 TI - A new method for computer aided serial radiograph superimpositioning. PMID- 3860385 TI - Gastric mucosal protection by spizofurone. AB - The protective effect of spizofurone (AG-629) on the rat gastric mucosa was studied in the presence of various stimuli. Spizofurone given orally markedly inhibited gastric lesions induced by ethanol (ED50 = 6.5 mg/kg). Spizofurone inhibited ethanol-induced gastric lesions even when administered intraperitoneally (i.p.), but the onset of action after oral administration was shorter. Spizofurone given orally or i.p. in a dose range of 25-200 mg/kg inhibited indomethacin-induced gastric antral ulcers in re-fed rats. Furthermore, spizofurone potentiated the inhibitory effect of prostaglandin E2 on indomethacin induced gastric antral ulcers. Spizofurone given i.p. prevented a decrease in potential difference and the formation of gastric lesions induced by intragastric instillation of 30 mM aspirin in 0.1 N HCl. Spizofurone given i.p. inhibited the increase in net fluxes of H+ and Na+ caused by intragastric instillation of 15% ethanol in 0.1 N HCl. These findings indicate that spizofurone, like prostaglandin E2, exerts gastric mucosal protection and even potentiates the anti ulcer effect of prostaglandin E2. The gastric mucosal protection by spizofurone is ascribed in part to preservation of the mucosal barrier. PMID- 3860387 TI - Long term results of orthodontic treatment. A clinical view 1. PMID- 3860388 TI - The long term effects of one lower incisor extraction. PMID- 3860389 TI - Maxillonasal dysostosis (Binder syndrome); a review of the literature and case reports. PMID- 3860391 TI - Morphology of the first cervical vertebra in children with enlarged adenoids. PMID- 3860390 TI - Craniofacial morphology and head posture in children with asthma and perennial rhinitis. PMID- 3860392 TI - Importance of phospholipids in the bronchi. PMID- 3860393 TI - Synthesis of surfactant lipids in the adult and fetal lung: pathways and regulatory aspects. PMID- 3860394 TI - Structural and functional aspects of protein: phospholipid interactions in surfactant. AB - Lung surfactant lipids require the presence of a specific protein and calcium ions in order to form surface films rapidly at air-water interfaces. Film formation is a necessary first step in maintenance of low surface tensions in the lung. We have studied some of the factors involved with the lipid-protein interactions in reassembled complexes as well as in isolated lung surfactant. For both of these systems, removal of apoprotein or calcium ions results in impaired surface spreading. Increasing the amounts of this apoprotein relative to phospholipid results in increased lipid-protein association, increased vesicle aggregation, and increased monolayer film formation at the air-water interface in the surface balance. PMID- 3860395 TI - Endobronchial surface active phospholipids in various pulmonary diseases. AB - In the present study we investigated the phospholipid composition of small-volume (up to 20 ml) in vivo bronchoalveolar lavage and that of quantitative ex vivo bronchoalveolar lavage. Furthermore, the accuracy of the small-volume lavage in predicting lung disease was evaluated. There was a positive linear correlation (r approximately equal to 0.87-0.91) between the amount of saturated phosphatidylcholine and the saturated phosphatidylcholine/sphingomyelin ratio in quantitative bronchoalveolar lavage. The phospholipid distributions in the small volume lavage and the quantitative lavage were similar (r approximately equal to 0.78-0.94, n = 14). The overall accuracy of phosphatidylcholine/sphingomyelin ratio and phosphatidylglycerol/total phospholipid ratio in predicting the presence or absence of respiratory failure was 85-87% in newborns, children, and adults. In respiratory diseases without respiratory failure, the abnormalities in the phospholipids were frequent, although less distinct. According to animal experiments the surfactant system is inhibited at the onset of high permeability lung edema. Soon thereafter, the lavageable surfactant pool is decreased. Present findings support the view that surfactant defects are of importance in the pathogenesis of respiratory disease, and that surfactant-oriented therapy may be effective in the treatment and prevention of respiratory failure. PMID- 3860396 TI - Possible function of bronchial surfactant. AB - In addition to stabilizing peripheral airways bronchial surfactant is essential for bronchoalveolar transport mechanisms including non-ciliary and ciliary mucus transport. Furthermore, it could play a role in the masking of smooth muscle receptors with respect to contractile stimuli. A model has recently been devised in which predominant impairment of the bronchial surfactant is induced by a combination of positive or negative pressure ventilation with tracheal saline instillation (approximately 3 ml/kg). It is shown that tracheal instillation or inhalation of surfactant could be a promising approach for the treatment of damage to the bronchial surfactant system. In vitro investigations of the transport properties of various phospholipid mixtures and of detergents revealed that the transport function of surface active materials is independent of both the hysteresis characteristics and the surface tension changes during compression and expansion in the Langmuir trough. PMID- 3860397 TI - Pharmacological stimulation of surfactant secretion and surfactant replacement. PMID- 3860398 TI - Morphology of the bronchial lining layer and its alteration in IRDS, ARDS and COLD. AB - Both light and electronmicroscopic examinations of the collocation of surfactant secreted by the alveoli into the bronchi were performed on material obtained from biopsies and autopsies. In the sol phase and especially along the border between the sol and gel phases of the bronchial mucus layers regularly arranged, partially stretched and partially reticulated osmiophilic membranes could be demonstrated. Their detailed structure corresponds with the structure of the phospholipid membranes of the surfactant in the alveoli. The functional significance of this surfactant portion for bronchial clearance is discussed in relation to the changes in structure of these membranous bodies, and their collocation in the mucus layers in chronic bronchitis, ARDS and IRDS. PMID- 3860399 TI - Influence of surfactant on mucociliary transport. AB - The effect of surfactant on mucociliary transport has been studied in vitro on frog palate preparations. Surfactant obtained from pig lung was sprayed on frog palate and its effect on mucociliary transport, restored by the application of mucus, was compared with that of sprayed saline. Whereas saline induced a constant decrease in restored transport rate (mean +/- SEM = -37 +/- 3%, p less than 0.01), surfactant caused an increase in 5 of 6 experiments (+16 +/- 3%, p = NS). The difference between the 2 treatments was highly significant (p less than 0.001). Ambroxol has previously been shown to change the airway secretions of patients affected by chronic bronchitis; these secretions significantly improved mucociliary transport when applied to the frog palate. One may then speculate that the mucoactive effect of ambroxol in patients could be partly mediated by an antiadhesive effect of surfactant, production of which is increased by ambroxol, on cilia-mucus coupling on the surface of bronchial mucosa. PMID- 3860400 TI - Endobronchial surface active phospholipids: clinical conclusions. PMID- 3860401 TI - Removable Herbst appliance utilization in adult disk displacement. PMID- 3860402 TI - Correction of a Class II, division 1 bimaxillary dento-alveolar protrusion without extraction. PMID- 3860403 TI - Adverse effects of human leukocyte antigen-DR sharing on fertility: a cohort study in a human isolate. AB - To elucidate further the reproductive effects of human leukocyte antigen (HLA) sharing among spouses, we have been investigating prospectively the relationship between HLA-A, -B, and -DR sharing and reproductive outcome in the Hutterites, a religious isolate that proscribes contraception. For the first time the reproductive effects of HLA-DR sharing in a fertile population is reported in this article. Median intervals from marriage to first through fifth births were longer among couples who shared more than one HLA-A, -B, or -DR antigen. Longer intervals were associated with increased spontaneous abortion rates among couples who shared HLA-DR antigens (27%), compared with couples who shared only HLA-A or B antigens (9%) and couples who shared no antigens (12%). Median completed family sizes were 5.0, 8.5, and 8.0 among the groups, respectively. However, some couples who shared HLA-DR antigens experienced no spontaneous abortions, despite ten or more pregnancies. Therefore, although HLA-DR compatibility, per se, is not deleterious, our data suggest a potentially important role for undefined HLA linked genes in normal pregnancy. PMID- 3860404 TI - [10-year activities in training dentists at the Dental Clinic of the Medical School of the University of Pecs]. PMID- 3860405 TI - [Scanning electron microscopic examination of the sheath of Neumann]. PMID- 3860406 TI - [Ultrastructure of the surface of the margin between a composite resin and dentin]. PMID- 3860407 TI - [Correction of micrognathism by graduated mandibular osteotomy and hip-bone graft]. PMID- 3860408 TI - [Immunoglobulin levels in chronic periapical changes]. PMID- 3860409 TI - [Dental implications in the prevention of infectious endocarditis]. PMID- 3860410 TI - [Bleaching of discolored teeth]. PMID- 3860411 TI - [Effect of selenium on the microhardness of incisors in rats kept on normal and protein-deficient diets]. PMID- 3860413 TI - [Management of a case of traumatic tooth avulsion]. PMID- 3860412 TI - [Anatomo-clinical considerations of 2 cases of pure myxoma of the jaws]. PMID- 3860414 TI - [Carpal tunnel syndrome: a professional risk for dentists]. PMID- 3860415 TI - [Complex amalgam reconstructions. I]. PMID- 3860416 TI - [Intraoral radiography with xeroradiographic technics: the 110 system]. PMID- 3860417 TI - [Sedation-analgesia with nitrous oxide in dentistry. II: Medico-legal aspects, safety, equipment]. PMID- 3860418 TI - [Classification of periodontal diseases]. PMID- 3860419 TI - [Methods of medical analysis in periodontal therapy]. PMID- 3860420 TI - [Identification of P10, a composite resin for posterior restorations]. PMID- 3860421 TI - [Pathology of the salivary glands. II. Inflammatory disease]. PMID- 3860422 TI - Choosing the bank that will build your business. PMID- 3860423 TI - Put your lab on page one: start your own newsletter. PMID- 3860424 TI - Confessions of a reformed price-cutter: the costs are higher than you think. PMID- 3860425 TI - Bruxism splints: a laboratory viewpoint. PMID- 3860426 TI - Job termination. When and how to fire an employee. PMID- 3860428 TI - Buying a practice from an estate. PMID- 3860427 TI - All about profits: what they really are and how to get them. PMID- 3860429 TI - It was arson! PMID- 3860430 TI - Tactful techniques to help patients overcome fear. PMID- 3860431 TI - The high cost of addiction. PMID- 3860432 TI - Dentists: who are they? PMID- 3860433 TI - Creating a positive, professional image: the importance of first impressions. PMID- 3860434 TI - 1984 survey shows advertising dentists making income gains. PMID- 3860435 TI - Whatever happened to...? PMID- 3860436 TI - The legal implications of dental office cleanliness. PMID- 3860437 TI - Direct reimbursement. PMID- 3860439 TI - Developing effective Yellow Pages ads. PMID- 3860440 TI - Public relations with a plan. PMID- 3860438 TI - Presenting cosmetic dentistry to your community. PMID- 3860441 TI - The demise of Emory University's School of Dentistry. PMID- 3860442 TI - Helping hands for the hygienist. PMID- 3860444 TI - Life, death and buy-sell agreements. PMID- 3860443 TI - Senior citizens. Serving the elderly can bring many rewards. PMID- 3860445 TI - Contract staff leasing: is it for you? PMID- 3860446 TI - Another approach to the irate caller. PMID- 3860447 TI - Make your compensation plan work for you. PMID- 3860448 TI - Contract of employment. PMID- 3860449 TI - Running a dental laboratory. Part seven: employers and the law (2). PMID- 3860450 TI - Neutrophil differentiation antigens. PMID- 3860452 TI - [Resistance to mercury embrittlement of some alloys for amalgam]. PMID- 3860451 TI - The relationship between growth and androstenedione metabolism in four cell lines of human breast carcinoma cells in culture. AB - The conversion of androstenedione (A) to estrogens, testosterone (T) and 5 alpha reduced metabolites was studied in different phases of cell growth in 4 lines of cultured human breast carcinoma cells. Aromatase activity was 10-fold greater in MD and DM than in MCF7 cells and was undetectable in ZR75 cells. Estrogen formation in MD and DM lines increased during the phase of exponential growth and decreased to 20% of maximum during confluence. 5 alpha-Reductase activity was determined by the formation of 5 alpha-androstane-3,17-dione (5 alpha-A-dione) and androsterone (AND), and was 5-fold greater in ZR75 cells than MD cells and 2 fold greater than in MCF7 cells. This activity was relatively constant during exponential growth and decreased during confluence. T accumulation was inversely related to 5 alpha-reductase activity. The MCF7 and ZR75 cells which contain estrogen receptors had the highest levels of 5 alpha-reductase activity while the MD line which lacks estrogen receptors had the lowest 5 alpha-reductase activity. The assessment of aromatase and 5 alpha-reductase activity in addition to estrogen and progesterone receptors may be helpful in predicting hormone sensitivity in human breast tumours. PMID- 3860454 TI - Human enamel-dental amalgam pin on disc wear. PMID- 3860453 TI - Measurement of change in surface contour by computer graphics. PMID- 3860455 TI - [Comparative study of pinocytosis and the production of prostaglandin E2 by hepatic and peritoneal resident macrophages in mice]. AB - Pinocytosis and prostaglandin E2 production are two major functions of the mononuclear phagocyte system. The goal of this study was to compare the pinocytosis of horseradish peroxidase and the prostaglandin E2 production between the hepatic and peritoneal resident macrophages in the mouse. Hepatic resident macrophages were isolated by collagenase digestion, differential centrifugation and adherence. Peritoneal resident macrophages were isolated by peritoneal cavity washing followed by adherence. Horseradish peroxidase was endocytosed by hepatic macrophages at a significantly higher rate (118 +/- 12 ng/10(6) cells/60 min) than by peritoneal macrophages (21 +/- 4 ng/10(6) cells/60 min). Prostaglandin E2 production was measured in the culture medium of unstimulated and lymphokine stimulated hepatic and peritoneal resident macrophages. Prostaglandin E2 concentration in the culture medium of unstimulated peritoneal macrophages was 36.6 +/- 26.8 ng/ml after a 24 h incubation. It was increased by 83 p. 100 in presence of a lymphokine-enriched secondary mixed lymphocyte culture supernatant. In contrast, hepatic macrophages did not produce any significant amount of prostaglandin E2, even if they were incubated in presence of lymphokines. This study shows that hepatic resident macrophages have a higher pinocytic capacity than peritoneal resident macrophages, suggesting that the role of the liver in the clearance of gut-derived antigens is not only due to its portal irrigation but also to the presence of macrophages highly differentiated in their endocytotic properties. The lack of prostaglandin E2 production in hepatic macrophages, in basal conditions as well as after lymphokine-stimulation, suggests that these cells play a minor role in the regulation of the immune response.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860456 TI - [Linkage relationship among loci determining genetic variants of serum and milk proteins in cattle]. AB - Special methods allowing usage of inadequate pedigrees were employed to examine linkage among the milk protein loci alpha s1-casein, beta-casein, chi-casein and beta-lactoglobulin, and the loci for serum amylase, ceruloplasmin and transferrin. Linkage was evident between the alpha s1-casein and beta-casein loci, the alpha s1 and chi-casein loci, the beta-casein and chi-casein loci, also amylase and transferrin loci. Recombination fractions for these corresponding combinations were 0.00; 0.00; 0.00 and 0.30. Weak linkage (recombination fraction being 0.46; 0.44 and 0.42) between the beta-lactoglobulin and beta-casein loci, the amylase and ceruloplasmin loci, ceruloplasmin and transferrin loci is supposed. PMID- 3860457 TI - [Population genetics of taiga hunters-deer breeders. Characteristics of the prevalence of HLA system markers among the native population of Central Siberia]. AB - The postulated peculiarities of distribution of the HLA antigens in the Evenk population of the Central Siberia indicate this population to be, on the whole, Mongoloid. Prolonged isolated existence of small inbred populations of the Evenks resulted in the number of specific HLA-complex features, such as poor antigen diversity, low level of heterozygosity. Non-homogeneity of gene frequencies was noted, the prevailing genes being A9, B40 with frequencies reaching 50%. Of the remaining alleles found in the Evenks A2, Aw19 in A locus, B5, B15, B17, B27, Bw35 in B locus and Cw2, Cw3, Cw4-in C locus are only widely spread. Similar heterozygosis levels and the HLA-system profiles draw the Evenks and the populations of American Indians and Eskimos closer to one another. On the basis of the fact that significant positive correlation exists between genetic and geographic distances determined for the Evenks and the native populations of America, genetic resemblance of these populations may be considered as evidence for their original relationship. Postulated closeness of native Central-Siberian populations to Americanoids, as regards HLA-system, makes it possible to consider formation of specific complex of HLA-system peculiarities in native American population in the light of their Siberian origin, for the first time. PMID- 3860458 TI - Prostaglandins are not mediators of the intestinal response to cholera toxin. AB - We have determined the release of prostaglandin E2 into the lumen of closed ileal loops in the rat and have measured the capacity of the mucosa to synthesise and degrade prostaglandin E2 both in control animals and after exposure to cholera toxin or bisacodyl. Exposure to cholera toxin caused no change in any of these measurements whereas bisacodyl caused an increase in the luminal PGE2 content. We conclude that the secretion stimulated by cholera toxin is not mediated by locally produced prostaglandins. PMID- 3860459 TI - [Elucidative analysis of anthropological methods as an instrument for determining the typological by normal external anatomy of the European or Caucasian facial system. IV. and V]. PMID- 3860460 TI - [Orofacial dyskinesias from the psychosomatic viewpoint]. PMID- 3860461 TI - [Orofacial dyskinesias as an expression of a disturbed relationship of breathing, digestion and movement]. PMID- 3860462 TI - [X-ray study of differences in the position of the mandible in twins]. PMID- 3860463 TI - [Mandibular growth in cases of early temporomandibular joint injuries]. PMID- 3860465 TI - [Total length and axial angle of the mandible--an analysis of lateral x-ray pictures]. PMID- 3860464 TI - [Appliance therapy of orofacial dyskinesias in cerebral palsy patients]. PMID- 3860466 TI - Chronic myelomonocytic leukemia: clinical features, cytogenetics, and prognosis in 30 consecutive cases. AB - A retrospective analysis of 30 patients with chronic myelomonocytic leukemia (CrMML) was performed to define the natural history of the disease and the risk of acute transformation. Our patients fulfilled the following criteria of diagnosis: blood monocytosis over 1 X 10(9)/l, blast cell percentage in bone marrow up to 30, and in peripheral blood less than 5. The most common presenting feature was anemia; seven patients had fever; three patients complained of purpura and bleeding. Anysopoikilocytosis and macrocytosis were frequent. Abnormal granulocyte morphology, defective granulation and abnormal leukocyte alkaline phosphatase were often observed. Blast cells in peripheral blood smears were found in 14 patients. Serum and urine lysozyme levels were increased in 82 per cent and 93 per cent, respectively. Dysplastic changes involving erythroid, granulocytic and megakaryocytic lineages were constant features in all cases. Agranulated blasts above 5 per cent of marrow nucleated cells were seen in 13 patients (43 per cent). Seven of the 20 patients showed non-specific chromosomal abnormalities at diagnosis. Median survival from diagnosis was 18 months (range, 3-112). Evolution into acute myeloid leukemia occurred in 11 patients. No difference in survival was found between patients who developed acute leukemia and patients who did not. A shorter survival has correlated to the following parameters: leukocytes greater than 10 X 10(9)/l, the presence of blasts in peripheral blood and agranulated blasts in the marrow above 5 per cent. PMID- 3860467 TI - The expanding medical staff: nonphysician practitioners. PMID- 3860468 TI - JCAH decisions to ease switch to new psych standards. PMID- 3860469 TI - Bone marrow findings in systemic mastocytosis. AB - The neoplastic proliferation of tissue mast cells constitutes a group of rare diseases that have localized and systemic variants. The cytologic (n = 7) and histologic (n = 38) findings in bone marrow from a total of 45 patients with systemic mastocytosis were evaluated. Three distinct histologic patterns of marrow involvement were distinguished. In 21 cases a patchy or focal infiltration pattern was encountered. Mast cell aggregates were located predominantly in peritrabecular and perivascular areas. The adjacent trabeculae were thickened. A dense network of reticulin fibers and foci of lymphocytes accompanied the mast cell infiltrates. Increased numbers of eosinophils frequently demarcated the mast cell infiltrates from the surrounding tissue. In the noninfiltrated marrow areas hematopoiesis and the distribution of fat cells appeared to be normal. This histologic pattern, designated type 1, was observed exclusively in patients showing primary involvement of the skin, indistinguishable from urticaria pigmentosa. In 14 additional cases peritrabecular and perivascular sheets of mast cells, with concomitant fibrosis and osteosclerosis, were also present. Unlike the findings in type 1, however, the noninfiltrated marrow areas showed marked reductions in fat cell content and markedly increased granulocytopoiesis or increased numbers of blast cells (infiltration pattern type 2). On the basis of the hematologic and clinical findings, chronic myeloid leukemia was diagnosed in six of these cases, myelomonocytic leukemia in three cases, and acute myeloid leukemia in two cases. The bone marrow of three patients was diffusely infiltrated by atypical mast cells, leading to marked hypoplasia of fat cells and blood cell precursors. These histologic features were identified as infiltration pattern type 3. The diagnosis of mast cell leukemia was confirmed in all three cases by the presence of numerous mast cells in the blood. The prognosis for patients with the type 1 marrow infiltration pattern and primary skin involvement was favorable (actuarial survival rate five years after diagnosis, 0.75). This variant was called benign systemic mastocytosis. Primary skin involvement did not occur in the patients with type 2 or 3 infiltration patterns. The prognosis for these patients was poor (actuarial survival five years after diagnosis, 0.17 for type 2 and 0.00 for type 3). These two forms were accordingly designated malignant systemic mastocytosis. PMID- 3860470 TI - Genetic complementation of steroid sulphatase after somatic cell hybridization of X-linked ichthyosis and multiple sulphatase deficiency. AB - Complementation studies of steroid sulphatase were carried out in the heterokaryon population of fibroblasts derived from patients with X-linked ichthyosis and multiple sulphatase deficiency. The activity of steroid sulphatase of the fused cell population was constantly higher (approximately 2-5 fold) than that of the unfused cocultivated cells. The occurrence of complementation further supports the hypothesis that at least two different loci control the expression of steroid sulphatase in the human genome. PMID- 3860471 TI - Multipoint linkage analysis of the short arm of the human X chromosome in families with X-linked muscular dystrophy. AB - Sixteen three generation families from the West of Scotland with Duchenne muscular dystrophy (DMD) or Becker muscular dystrophy (BMD) have been studied using the Xg blood group and seven cloned DNA sequences which recognise DNA polymorphisms on the short arm of the X chromosome (Xp). Linkage has been established between DMD and probe 754 with a maximum lod score (Z) of 4.47 at a recombination fraction (theta) of 0.04. DMD has also been linked to probe 99-6 (Z = 3.75, theta = 0.03). Combining the data in this study with that of previously published work has established linkage between DMD and L1.28 (Z = 4.42, theta = 0.17) and altered the linkage estimate between BMD and L1.28 (Z = 3.50, theta = 0.22). An approximate order for the loci has been deduced by the study of recombinant chromosomes in phase known families informative for three or more loci. The proposed order is centromere--L1.28--754--DMD/BMD--99-6--D2--782--Xg. These results conclusively map both DMD and BMD to the central region of Xp and add weight to the original suggestion that they may be allelic. PMID- 3860472 TI - Soots. PMID- 3860473 TI - Appendix: case reports. PMID- 3860475 TI - Coal-tars and derived products. PMID- 3860474 TI - Bitumens. PMID- 3860476 TI - The development and clinical use of acrylic strips containing anti-microbial agents in the management of chronic periodontitis. AB - Several methods have been used to deliver antimicrobial drugs into periodontal pockets. This study was concerned with the development of acrylic in strip form for such an application. Initially the release of chlorhexidine acetate from cold cured acrylic strips into water, was measured spectrophotometrically over a 15 day period. The release of chlorhexidine was highest on day 1, was reduced considerably by day 2 and then fell progressively to day 15. With the exception of the release on day 1 there was little difference in daily release from drug admixtures between 40 to 80 per cent. Comparison of the release of chlorhexidine, metronidazole and tetracycline demonstrated a similar release pattern for metronidazole and chlorhexidine but the daily release of tetracycline was considerably less. A bioassay indicated that all drugs were released in active form. In a clinical study chlorhexidine, tetracycline and metronidazole rods were placed in periodontal pockets for 2-3 days and the effects monitored by dark field microscopy. All drugs produced a proportional increase in cocci and marked reductions in other organisms, notably the curved and motile rods and spirochaetes. The effects of metronidazole and tetracycline were greater than those of chlorhexidine. A second clinical study compared the effects of metronidazole and tetracycline strips placed for 2 weeks. Clinically, both treatment methods had immediate effects upon pocketing, bleeding on probing and crevicular flow, which for metronidazole were maintained to the 3-month follow-up period. For tetracycline, the bleeding and crevicular flow were significantly reduced and maintained to the 3-month period but the initial pocket reduction returned to baseline levels by 3 months.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860477 TI - Dental anaesthetic gases--hazards and hygiene. Federation Dentaire Internationale Technical Report No. 21. PMID- 3860478 TI - Effect of alpha-chlorohydrin on metabolism and testosterone secretion by rat testicular interstitial cells. AB - The direct effect of alpha-chlorochydrin (alpha-CH) on basic metabolism (glucose utilization and oxygen consumption) and testosterone secretion by isolated rat interstitial cells (I-cells) has been studied. In the range of concentrations between 5 and 100 microliter/ml, only the highest doses of alpha-CH decreased cell vitality and their histochemical stain for 3 beta-HSD. Oxygen consumption of I-cells was depressed at all doses higher than 10 microliter/ml and this effect was reversible only with doses lower than 50 microliter/ml. glucose utilization by I-cells was depressed significantly by alpha-CH and this effect was particularly dramatic with doses higher than 50 microliter/ml. alpha-CH decreased testosterone secretion by I-cells, with maximal effects at 100 microliter/ml. I cells responded to hCG challenge by increasing testosterone secretion, and hCG prevented the toxic effect of alpha-CH at the lowest dose (10 microliter/ml) of alpha-CH, but failed to overcome the effects of a high dose (100 microliter/ml). PMID- 3860479 TI - Phenotypic dynamics of tumor progression in human malignant melanoma. AB - The phenotypic changes in human melanoma cells during the course of tumor progression were studied with monoclonal antibodies (MAbs) against the melanoma associated antigens (MAA) M.2.2.4, H.2.8.10, K.1.2, A.1.43, and A.10.33, and HLA (A,B,C and D). Cryostat sections of 172 primary melanomas of the skin, 157 melanoma metastases and 56 nevi were investigated with an indirect immunoperoxidase method. Phenotypic heterogeneity was observed within lesions at all stages, and also within different tumors of the same patients. Despite this heterogeneity, principles of antigen expression were found. From the reaction pattern of MAbs, the following classifications of antigens were derived: "constitutive" markers of nevomelanocytic cells (M.2.2.4 and H.2.8.10) were found expressed over a wide range of local and systemic tumors. One MAA, K.1.2 (Suter et al., 1985), that declines with progression of melanoma, was classified as an "early" antigen, whereas MAA that appear in primary melanoma in proportion to invasiveness, and which are expressed in metastases of lymph nodes and visceral organs (A.1.43, and A.10.33), were classified as "late" markers of tumor progression. HLA-antigens were classified as "intermediate" markers, HLA-A,B,C, as an "early-intermediate", and HLA-DR as a "late-intermediate" marker. The occurrence of class II HLA, A.1.43-, and A.10.33-positive tumor cells in primary melanoma indicates a high metastatic potential of tumors, independent of tumor thickness. The data show that local and systemic progression of melanoma is associated with qualitative changes in tumor cells which can be recognized by MAbs. PMID- 3860480 TI - Reduction of cardiac toxicity of anthracyclines by L-carnitine: preliminary overview of clinical data. AB - Doxorubicin is one of the most effective antineoplastic agents but its limited use is due to acute and chronic cardiotoxicity. These side-effects are irreversible and dose-dependent, occurring in one-third of the patients treated after a cumulative dose of 300 mg/m2. It has been suggested that the problem of acute and chronic cardiotoxicity may be prevented by using L-carnitine. Hence nine patients receiving a cumulative dose (200-490 mg/m2) of doxorubicin have been studied. Acute cardiotoxicity has been evaluated by creatine kinase---marsh bender (MB) serum levels before and 15 h after treatment. Data demonstrated no significant increase of isoenzyme-MB after doxorubicin administration. Chronic cardiotoxicity has been monitored studying the electrocardiograph and the left ventricular performance by computerized M-Mode echocardiography measuring the maximal velocity of circumferential fibre shortening (VCF Max) which is considered a reliable and very sensitive non-invasive parameter to evaluate myocardial contractility. The results show a decrease in VCF Max (measured in diameter/cardiac cycle) from 1.7 +/- 0.4 to 1.4 +/- 0.3 but still within normal values. So the systematic use of L-carnitine as adjuvant therapy is proposed during doxorubicin administration. PMID- 3860481 TI - An epidemiological study of osteogenic sarcoma in Kenya: the variations in incidence between ethnic groups and geographic regions, 1968-1978. AB - Kenya is a country of marked environmental and ethnic diversity. A study of osteogenic sarcoma occurring in Kenya from 1968 to 1978 revealed 251 cases, representing between 89% and 100% of the predicted number. Variations in age, sex and anatomical location were within classical limits. However, the incidence of osteogenic sarcoma amongst the Central Bantu was significantly higher than predicted (P less than 0.0001), whilst the incidence among the Western Bantu was significantly lower (P less than 0.002), despite their similar ethnic origins. Two geographically dissimilar areas likewise exhibited significant differences in incidence. The Eastern province showed a higher incidence (P less than 0.02), whereas the Nyanza Province (P less than 0.001) and the adjacent Western Province (P less than 0.005) showed a lower than predicted incidence. These observations suggest that in Kenya a geomedical variable affects the incidence of osteogenic sarcoma and that genetic variation has no effect on incidence. PMID- 3860482 TI - Loaiasis. PMID- 3860484 TI - The delayed stress syndrome. PMID- 3860483 TI - HLA-DR antigen association with proliferative diabetic retinopathy. AB - No significant differences could be found in the HLA-DR antigen frequency of two groups of patients with insulin dependent diabetes mellitus (IDDM). One group consisted of 49 patients with proliferative diabetic retinopathy and the other group of 31 patients with no ophthalmoscopic evidence of diabetic retinopathy. PMID- 3860485 TI - Effects of life stressors on blood usage in hemophiliac patients: a pilot study. PMID- 3860486 TI - Differences of anxiety and dental stressors between dental students and dentists. PMID- 3860487 TI - Prostaglandin biosynthesis in the rat lens. AB - Rat lens microsomal preparations possess the capability of converting exogenous arachidonic acid into prostaglandins (PG) E2 and F2 alpha. The low, yet measurable prostaglandin biosynthetic capacity of the lens microsomes was demonstrated by radioimmunoassay (RIA) and by separation of radiolabeled products after incubation with high specific activity U-14 [C]-arachidonic acid. Maximal formation of radioimmunoassayable PGE2 and PGF2 alpha was measured after a 15-min incubation at 37 degrees C with approximately 0.5 mg protein. Prostaglandin biosynthesis was inhibited by the nonsteroidal anti-inflammatory agents aspirin (IC50 = 52 microM) and indomethacin (IC50 = 20 microM). These results unequivocally demonstrate prostaglandin biosynthesis in rat lens. PMID- 3860488 TI - Prostanoids in rabbit aqueous humor: effect of laser photocoagulation of the iris. AB - The authors measured concentrations of prostanoids (prostaglandin-like substances) in aqueous humor from normal pigmented rabbit eyes and from those subjected to argon laser photocoagulation of the iris. The predominant prostanoids quantitatively were prostaglandin E2 (PGE2), PGF2 alpha, and PGD2 with minor amounts of 6-keto-PGF1 alpha and thromboxane B2. In all cases, concentrations of prostanoids in laser-treated eyes were substantially greater than those in normal eyes. This finding was particularly striking in the case of PGE2 which increased 60-fold from 87 pg/ml to 5.5 ng/ml after irradiation. Concentrations of prostanoids following photocoagulation were related to the number of administered laser lesions and prostanoid release was associated with an initial hypertensive response and disruption of the blood-aqueous barrier. PMID- 3860489 TI - A phase II study of mitoxantrone in acute leukemia. AB - A phase II study of mitoxantrone (Novantrone; dihydroxyanthracenedione) was conducted in 35 patients (22 male: 13 female) with acute leukemia. There were 35 evaluable cases with a mean age of 34 (range 8-61). Twenty-eight patients had acute non-lymphocytic leukemia (ANLL) and seven had acute lymphocytic leukemia (ALL). Mitoxantrone was administered intravenously 2-4 mg/m2 daily for five days and after the nadir a further 2-3 doses were added if necessary. All previously treated cases (22 patients) had been treated with anthracyclines; 13 had no previous treatment. Out of the 13 untreated cases there were six complete remissions (CRs) (46.2%) and five partial remissions (PRs) (38.5%), while out of 22 pretreated cases, four CRs (18.2%) and five PRs (22.7%) were obtained. In seven of the untreated cases the decrease of leukemic cells and neutrophil leukocytes were analysed. Mitoxantrone showed a longer duration of decrease and higher log decrease of leukemic cells in the bone marrow than daunorubicin or cytosine arabinoside. Seventy-three percent of patients showed gastrointestinal disturbances such as nausea or loss of appetite. In 38.1% SGPT elevation and in 8.8% abnormal ECG findings were observed. All side-effects were mild and reversible. From this data mitoxantrone seems a very promising agent in the treatment of acute leukemia and a phase III study is now being carried out. PMID- 3860490 TI - Mitoxantrone in the treatment of relapsed and refractory acute leukemia. AB - Twenty-four patients with acute leukemia or blast crisis (BC) of chronic myelocytic leukemia (CML) in relapse or refractory to standard chemotherapy, were eligible for treatment with mitoxantrone. Mitoxantrone (Novantrone; dihydroxyanthracenedione) was administered in a dose of 8-13 mg/m2 on five consecutive days. Five of 20 evaluable patients were induced into complete remission, one patient achieved a partial remission. Side-effects included moderate to severe bone marrow suppression, moderate mucositis and hair loss. No cardiotoxicity was observed. We believe that mitoxantrone is an active agent in the treatment of acute leukemia and suggest further studies in combination chemotherapy. PMID- 3860491 TI - Phase I-II trial of mitoxantrone in acute leukemia: an interim report. AB - We evaluated the effect of mitoxantrone (Novantrone; dihydroxyanthracenedione) in the treatment of refractory acute leukemia and acute leukemia in relapse. In this study, 70 patients are currently evaluable. Of the 25 patients who received mitoxantrone 10 mg/m2 X 5, two of 10 with ANLL in relapse, one of five with ALL in relapse achieved complete remission, and one of seven with blastic phase CML responded. At a dose of 12 mg/m2 X 5, nine of 22 patients with ANLL in relapse, one of five patients with blastic phase CML and none of the nine patients with ALL responded. At this dose all remissions occurred after one course of treatment. None of the patients with ANLL or ALL refractory to primary therapy achieved a remission. Toxicities encountered with both dose levels were comparable. However, second courses at 12 mg/m2 X 5 led to severe stomatitis and prolonged cytopenia. We conclude that mitoxantrone is effective therapy for ANLL in relapse and that 12 mg/m2 per day X 5 is the optimal dose schedule. A randomized trial comparing daunorubicin with mitoxantrone in combination with cytarabine in untreated patients with ANLL should answer whether mitoxantrone is less toxic and whether it should replace daunorubicin in standard induction therapy in ANLL. PMID- 3860492 TI - Correlation between prostaglandin and thromboxane levels and clinical signs in cyclosporine A-treated guinea pigs with acute experimental allergic encephalomyelitis. AB - Prostaglandin E, prostaglandin F2 alpha and thromboxane B2 levels were measured in the spinal cord and cerebellum of guinea pigs with acute experimental allergic encephalomyelitis treated with Cyclosporine A in a schedule which delayed the onset of the disease and completely suppressed it in 40% of the animals. A correlation was found between the eicosanoid levels in the central nervous system and clinical signs of the disease. Where lesions were completely suppressed the levels of eicosanoids were normal. The number of lesions found correlated well with the clinical state of the animals. PMID- 3860493 TI - Establishing a respiratory therapy program in the home: the South Hills program. PMID- 3860494 TI - Does laxative abuse control body weight? A comparative study of purging and vomiting bulimics. AB - This study examines the daily food intake and eating habits of 30 bulimia nervosa patients of normal weight; 20 vomited daily and 10 purged daily. The aim was to measure and compare food intakes and to examine the belief that laxative abuse is an effective means of controlling body weight. The results indicate that the purgers control their weight by overall dietary restraint, not by the pharmacological action of the laxatives. The purgers' eating patterns were bulimic, but not gross: mean daily energy intake being in a normal range (2210 +/ 210 kcal/day). Binge-eating by the vomiters was of a different order: mean energy intake was very large (6025 kcal/day), nearly three times that recommended and significantly greater (P less than 0.01) than that eaten by the purgers. There was major daily variation (s.d. = 3605) and, on occasions, huge amounts were recorded, up to 30 000 kcal in a day. Despite this, vomiting was highly effective in preventing weight gain, the mean weights of the vomiters being similar (mean = 98 per cent) to their matched population mean weight (MPMW). In contrast, purging was relatively ineffective, for despite smaller energy intakes, all the purgers were above (mean = 114 per cent)--and some markedly above--their MPMW. This difference between the two groups was significant (P less than 0.01). Reasons for persisting with laxative abuse are discussed. PMID- 3860495 TI - New anthracycline antibiotics: serirubicin and 1-hydroxyserirubicin. PMID- 3860496 TI - Purification and properties of a novel ferricyanide-linked xanthine dehydrogenase from Pseudomonas putida 40. AB - The isolation of a xanthine dehydrogenase from Pseudomonas putida 40 which utilizes ferricyanide as an electron acceptor at high efficiency is presented. The new activity is separate from the NAD+ and oxygen-utilizing activities of the same organism but displays a broad pattern for reducing substrates typical of those of previously studied xanthine-oxidizing enzymes. Unlike the previously studied enzymes, the new enzyme appears to lack flavin but possess heme and is resistant to cyanide treatment. However, sensitivity of the purified enzyme to methanol and the selective elimination of the activity when tungstate is added to certain growth media suggest a role for molybdenum. The enzyme is subject to a selective proteolytic action during processing which is not accompanied by denaturation or loss of activity and which is minimized by the continuous exposure of the activity to EDTA and phenylmethylsulfonyl fluoride. Electrophoresis of the denatured enzyme in the presence of sodium dodecyl sulfate suggests that the enzyme is constructed of subunits with a molecular weight of approximately 72,000. Electrophoresis under native conditions of a purified enzyme previously exposed to magnesium ion reveals a series of major and minor activity bands which display some selectivity toward both electron donors and acceptors. An analysis of the effect of gel concentration on this pattern suggests that the enzyme forms a series of charge and size isomers with a pair of trimeric forms predominating. Comparison of the rate of sedimentation of the enzyme in sucrose gradients with its elution profile from standardized Sepharose 6B columns suggests a molecular weight of 255,000 for the major form of the native enzyme. PMID- 3860497 TI - [Embryogenesis of the styloglossus muscle in the human embryo. Its relationship with neighboring structures]. AB - Histogenesis of the muscles of the human tongue has been studied from the 15th week in utero onward: however their intrinsic or extrinsic origin is uncertain. The intrinsic musculature has sometimes be questioned (Saban, 1971). The embryogenesis of the styloglossus muscle has been studied in ten 39 to 58 day old human embryos. Its differentiation beyond the first lingual swellings in contact with a branch of the hypoglossus nerve allows its development to be followed outside the territories of the branchial arches. This study showed its progressive development, from day 42 onward, along bundles of the ceratoglossus and basioglossus muscles. The styloglossus muscle penetrates slowly on day 45 in the transverse fibres located behind the tongue. These latter differentiate earlier, independently and at the same time as the geniohyoid and genioglossus muscles, near the neural extensions of the hypoglossus nerve: they are very rapidly intermixed with the fibres of the genioglossus muscle: the other muscular fibres and those of the styloglossus muscle penetrate only later and progressively. In the current state of knowledge of axial neural organization, it can be concluded that the lingual muscles differentiate from the same type of cells recognized and innervated by the neurons of the hypoglossus nerve. The epigenesis of the different muscles is related to the appearance of their various functions. PMID- 3860498 TI - Mandibular condylar structure and growth in Macaca fascicularis are related to skeletal rather than dentitional development. AB - Mandibular condyles of eight male monkeys (Macaca fascicularis), ranging in weight from 1.5 to 3.0 kg, were examined using histometric, radioautographic and stereologic techniques. The animals were classified on the basis of their dentitional and, as judged from radiographs of the hand and wrist, of their skeletal development. This allowed morphometric parameter means to be plotted as a function of four dentitional and five skeletal levels of maturation. The influence of dentitional and skeletal age on total parameter variations was examined by calculating factorial analyses of variance. Although consistent and well defined within each method, condylar parameter changes plotted over skeletal age were essentially different from those over dentitional age. Whereas the latter were difficult, if not impossible, to interpret, the former closely resembled the age-related curves displaying the elongation of short bones of the fingers in M. fascicularis. Furthermore these parameter changes were also consistent with longitudinal alterations in mandibular growth as assessed radiographically in man. The analyses of variance suggested that animals exhibiting the same degree of skeletal as compared to dentitional development, particularly at late stages of maturation, were markedly more homogeneous with respect to the majority of the morphometric parameters examined. Therefore, somatic maturation rather than the stage of tooth eruption should be the basis for estimating biological age in growth studies of the mandibular condyle. PMID- 3860499 TI - Biochemical characteristics and protein composition of murine saliva evoked in vivo by receptor-selective agonists. AB - We have demonstrated that the proteins of mouse saliva secreted in vivo are dependent on the nature of the stimulus, both qualitatively and quantitatively. The electrophoretic pattern of salivary proteins obtained by stimulation with phenylephrine is different from that evoked by carbamylcholine or isoproterenol. The electrophoretic pattern of alpha-adrenergic saliva largely resembles that of the proteins secreted in vitro by male submandibular glands, indicating that these proteins are predominantly derived from the granular convoluted tubular cells of submandibular glands. Secretion of proteins from acinar cells of parotid and submandibular glands was particularly stimulated by beta-adrenergic agonists and, to a lesser extent, by cholinergic agonists. The data from the in vivo induced salivas are in agreement with the morphological data on the regulation of the secretory process from parotid and submandibular glands. On the other hand, the secretory process in vitro does not occur specifically, whereas that in vivo does. PMID- 3860500 TI - Dentin sensitivity: a review. PMID- 3860501 TI - Glycogen content and phosphorylase activities in deciduous dental pulp. Study on porcine teeth during root formation, fully formed root and root resorption phases. AB - Glycogen content and glycogen phosphorylases (a and total) were measured in dental pulps from pigs sacrificed at 20, 40, 50, 70, 90, 120, 180, 270 and 300 days of age. The following conclusions were drawn: (a) pulp glycogen content was higher during root formation than during root resorption; (b) the phosphorylase activities (a and total), were higher during root resorption than in the other phases; (c) pulps from different teeth, when in the same developmental stage, possessed a similar glycogen metabolism, as revealed by glycogen content and enzyme activity determinations. PMID- 3860502 TI - Spectral differences between rhodanese catalytic intermediates unrelated to enzyme conformation. AB - Circular dichroism (CD) spectra and UV absorption spectra of two obligatory intermediates in rhodanese catalysis were compared. A broad CD band between 250 and 287 nm increased in a manner stoichiometrically related to the content of enzyme-bound persulfide. Titration of a sample of sulfur-substituted rhodanese (ES) with either cyanide or sulfite gave a stoichiometry that is consistent with one persulfide/molecule of rhodanese (Mr = 33,000). This result agrees with that determined by x-ray crystallography and a method based on quenching of intrinsic fluorescence. Cyanolysis of the persulfide in ES is accompanied by a decrease of UV absorption in the region between 250 and 300 nm. Cyanide titrations followed by the change in absorbance at 263, 272, and 292 nm gave the expected stoichiometry. The magnitude of the difference between the far UV-CD spectra of E and ES found here is smaller than reported previously. This variability suggests that the differences in the secondary structure of these intermediates may not be obligatorily related to the cyanolysis of the persulfide. This view is compatible with recent evidence which suggested that E and ES may be made different by structural relaxation events that occur outside of the catalytic cycle. Furthermore, the methods developed here will be useful in studies on the stability of the catalytic persulfide that has been suggested to be central in the mechanism of several enzymes important in sulfur metabolism. PMID- 3860503 TI - Accumulation of porphobilinogen deaminase, uroporphyrinogen decarboxylase, and alpha- and beta-globin mRNAs during differentiation of mouse erythroleukemic cells. Effects of succinylacetone. AB - We have monitored, during the dimethyl sulfoxide (Me2SO)-induced differentiation of MEL cells, the accumulation of mRNAs encoding two enzymes of the heme biosynthetic pathway, namely porphobilinogen deaminase and uroporphyrinogen decarboxylase. Our results demonstrate that the induction of these two enzymes is accounted for by a coordinate increase in their corresponding mRNAs, as estimated by hybridization with specific cloned cDNA probes. These events occur early during the differentiation process and precede the accumulation of alpha- and beta-globin mRNAs. Blocking the heme biosynthetic pathway with succinylacetone does not appear to modify the Me2SO-mediated increase of porphobilinogen deaminase and uroporphyrinogen decarboxylase mRNAs although succinylacetone has been shown to prevent the induction of immunoreactive porphobilinogen deaminase as well as its enzymatic activity (Beaumont, C., Deybach, J. C., Grandchamp, B., Da Silva, V., de Verneuil, H., and Nordmann, Y. (1984) Exp. Cell Res. 154, 474 484). Heme depletion resulting from the presence of succinylacetone in the culture medium reduces the extent of the Me2SO-mediated accumulation of alpha- and beta-globin mRNAs, and this effect is reversed by the addition of 10 microM exogenous hemin. Although the presence of succinylacetone prevents hemoglobinization of MEL cells, it does not prevent MEL cells from losing their proliferative capacity when treated with Me2SO. PMID- 3860504 TI - Isolation of three proteins that bind to mammalian RNA polymerase II. AB - We have used affinity chromatography on columns containing immobilized calf thymus RNA polymerase II to isolate three phosphoproteins (RAP72, RAP38, and RAP30) that bind directly to RNA polymerase II. All could be isolated from cell nuclei, and all three could be detected in mouse and human tissue culture cell lines, but only RAP38 and RAP30 have so far been isolated from calf thymus. RAP38 stimulates nonspecific transcription of native DNA templates by RNA polymerase II in the presence of Mn2+; it appears to be similar or identical to SII, a previously identified RNA polymerase II stimulatory factor (Nakanishi, Y., Mitsuhashi, Y., Sekimizu, K., Yokoi, H., Tanaka, Y., Horikoshi, M., and Natori, S. (1981) FEBS Lett. 130, 69-72). Unlike RAP38, RAP72 and RAP30 do not affect nonspecific transcription by RNA polymerase II. However, RAP30 may have a role in regulating some alterations of transcription that accompany cellular differentiation; RAP30 is partially dephosphorylated when murine erythroleukemia cells are induced with dimethyl sulfoxide to undergo terminal erythroid differentiation. We suggest that phosphate groups in RNA polymerase II-binding proteins may regulate transcription by modulating the interaction of RNA polymerase II with other regulatory proteins that possess sequence recognition specificity. PMID- 3860505 TI - The meaning of radiolucencies in parosteal osteosarcoma. AB - Parosteal osteosarcoma with either intralesional radiolucencies or extralesional clefts within the tumor was identified in eighteen patients. In each patient, both high-quality radiographs and whole macrosections of the lesions were available for correlative study of the radiolucencies. The intralesional radiolucencies were characterized as either deep or peripheral. Study of the macrosections showed that most of the peripheral lucent areas were comprised of low-grade malignant cartilaginous or fibrous tissue that was mixed with fat and bone trabeculae. The majority (67 per cent) of the high-grade dedifferentiated areas of tumor, however, corresponded to the deep radiolucencies. We think that the presence of a deep radiolucent area on a computed tomographic scan or other preoperative radiographic staging studies must create suspicion that a high-grade (grade-II) dedifferentiated region exists within an otherwise low-grade parosteal osteosarcoma. PMID- 3860506 TI - Monoclonal antibody to a 43 000 Mr surface protein of a human leukaemia cell line (THP-1) crossreacts with the fibroblast intermediate filament protein vimentin. AB - Monoclonal antibodies were produced against surface antigens of live cells from a human acute monocytic leukaemia cell line (THP-1). One clone, VIC-C2, when assayed by immunofluorescence microscopy, brightly stained the surface of THP-1 cells and the cytoplasm of Langerhans cells, fibroblasts and melanocytes in sections of human skin. The immunoreactive cytoplasmic structures were filamentous and resembled intermediate filaments. By double immunofluorescence microscopy using VIC-C2 and polyclonal antibodies to vimentin, the VIC-C2 antigen was shown to be located on intermediate filaments of cultured fibroblasts and to follow these filaments during various drug-induced rearrangements. As demonstrated by immunoprecipitation, antibody gel overlay and immunoblotting of two-dimensional polyacrylamide gels, VIC-C2 recognized two different antigens in extracts of THP-1 cells: one of Mr = 43 000 and pI = 7, the other of Mr = 57 000. In extracts from various cultured fibroblast cells only the 57 000 Mr antigen was detected. This 57 000 Mr protein was identified as vimentin by immunoblotting of rat glioma C6 cytoskeletons on two-dimensional gels. When vimentin was digested with chymotrypsin, only fragments containing parts of both helical rod pieces and the connecting non-helical spacer-region were strongly antigenic, whereas the helical rods alone were only weakly crossreactive. Moreover, immunoprecipitation revealed that VIC-C2 preferentially reacted with native compared to denatured vimentin. PMID- 3860507 TI - Determination of citalopram, amitriptyline and clomipramine in plasma by reversed phase high-performance liquid chromatography. AB - The determination of citalopram, amitriptyline, clomipramine and their desmethyl metabolites after alkaline diethyl either extraction from plasma is achieved by high-performance liquid chromatography using two internal standards and mu Bondapak C18 as stationary phase. Elution is carried out isocratically at 0.5 or 1 ml/min with a mixture of acetonitrile-potassium dihydrogen phosphate-distilled water (45:50:5). Detection is monitored by absorption at 254 nm. The detection limit is less than 5 ng/ml for each compound. The coefficients of variation are between 1.3% and 9.4% for 8-360 ng/ml. Interference from 22 possible co medications is discussed. The technique can be used for therapeutic monitoring of these antidepressants as well as in analytical toxicology. PMID- 3860508 TI - Pretreatment of cytokinetics in acute myelogenous leukemia. Age-related prognostic implications. AB - To determine the clinical and biologic relevance of cellular kinetics in leukemia, DNA flow cytometric analysis was performed on bone marrow biopsy specimens from 148 previously untreated adult patients with acute myelogenous leukemia. The proportion of cells in synthesis, second growth, and mitosis (S + G2M) ranged from 4% to 33% with a median of 14%. The overall incidence of complete remission was not affected by the pretreatment cell cycle distribution. As in earlier studies, there was a marked decline in remission rate with advancing age from 73% for patients age less than or equal to 50 yr to 50% for those greater than 50 (P less than 0.01). Although not affecting remission induction overall, an increasing proportion of cells in S + G2M phase was favorable in patients under the age of 50 yr, but was associated with a progressive decline in remission rate in older patients (P = 0.01). This age related divergent effect of cell cycle kinetics on initial response to therapy was confined to the less favorable subgroup of patients with karyotypic abnormalities, whereas patients with normal diploid cytogenetics had a consistently higher response rate regardless of proliferative activity. A positive correlation was also observed between percent of S + G2M cells and the proportion of diploid metaphases in young patients, contrasting with a negative correlation in the older age group. Our observations strongly suggest that the well-recognized prognostic effect of age on remission induction is not entirely host-mediated, but is at least partly an expression of disease-intrinsic differences between young and older patients. PMID- 3860509 TI - A defect in the regulation of major histocompatibility complex class II gene expression in human HLA-DR negative lymphocytes from patients with combined immunodeficiency syndrome. AB - Patients with an autosomal recessive combined immunodeficiency are characterized by an HLA negative phenotype of activated T and B lymphocytes. To determine the molecular basis of this syndrome we have studied the biosynthesis of class I and II antigens and the expression of relevant genes in these patients. The synthesis of the HLA A, B, and C heavy chain is markedly decreased, while beta 2 microglobulin is made in normal amounts. Biosynthesis of HLA-DR alpha-chain and beta-chain is abolished in the lymphocytes of these patients and there is a total absence of mRNA for either alpha-chains or beta-chains of HLA-DR. This indicates that the lack of class II antigen on these lymphocytes results from a block in the expression of HLA-DR genes. The Ii-chain, the invariant polypeptide associated intracellularly with HLA-DR, and its mRNA are made in normal amounts. Since the structural genes coding for class II polypeptides do not seem to be affected, the reported genetic defect in the patients concerns the regulation of the expression of HLA-DR genes. PMID- 3860510 TI - Extramedullary transformation of chronic myeloid leukaemia with a unique chromosome pattern. AB - A case of extramedullary myeloblastic transformation of chronic myeloid leukaemia is reported. This was characterised by an unusual clinical and haematological course and showed a unique cytogenetic pattern. PMID- 3860511 TI - Effect of self-administered daily irrigation with 0.02% SnF2 on periodontal disease activity. AB - To determine the effect on periodontal health of a daily self-administered irrigation with 0.02% stannous fluoride (SnF2) solution, 28 subjects who had moderate to advanced periodontitis were randomly divided into 3 groups: a control group (n = 9) which used no irrigation, a group (n = 8) which used a self administered water irrigation device (Water Pik) daily with water (H2O group) and a group (n = 11) which used the Water Pik in a similar manner but with SnF2 solution (SnF2 group). All subjects were instructed in routine tooth brushing and flossing but received no other periodontal treatment. 4 study sites were selected from each patient which had pocket depths greater than 4 mm and bleeding upon probing. Plaque index, gingival index, bleeding tendency, pocket depth, loss of attachment, and microbiologic samples of subgingival plaque for morphologic determinations were collected from all study sites at baseline, 2, 6, and 10 weeks. A cross-over was then initiated for 2 additional monthly checks in which the H2O group changed to SnF2 and the SnF2 group was divided into 2 subgroups which either continued to use SnF2 or changed to H2O. The control group completed the study at the beginning of the crossover. The clinical data showed significantly more improvement in periodontal health during the first 10 weeks for the SnF2 group (p less than 0.01). After cross-over, the clinical data indicated the group that changed from H2O to SnF2 significantly improved their periodontal health, while the group that changed from SnF2 to H2O became worse. The microbiologic data showed trends which agreed with the clinical data during the first 10 weeks but were less significant. After cross-over, the %s of motile rods and spirochetes were too small (0-7%) to establish statistically significant changes considering the accuracy of the technique used. PMID- 3860512 TI - Bone regeneration pattern and ankylosis in experimental furcation defects in dogs. AB - This study reports on the pattern of interradicular bone formation and the frequency and localization of ankylosis following regenerative surgery of experimentally-induced furcation defects in 12 beagle dogs. Observations were made in 39 specimens showing healing with connective tissue attachment in the full circumference of the furcation. The findings indicate that bone regeneration first occurs adjacent to the root surfaces, followed by a subsequent fill of the central portion of the interradicular area. Ankylosis, observed in 24 of the 39 specimens, was more frequent in large defects than in small defects. The incidence of ankylosis increased with increased distance from the base of the original wound. These findings suggest that coronal bone apposition may require or be facilitated by the presence of a root surface, and that undisturbed coronal regeneration may be dependent upon cellular or some other activity from the intact periodontal ligament. PMID- 3860513 TI - The thermodynamic behaviour of labial gingiva in patients with destructive periodontal disease. AB - The temperature changes of the labial gingiva and mucosa of the maxillary incisor regions were investigated using computer-assisted thermography. 9 patients with destructive periodontal disease (7 female and 2 male, aged between 12 and 33 years, undergoing periodontal treatment for periods varying from 6 months to 12 years) and 10 volunteers with clinically normal periodontia (6 female and 4 male, aged between 19 and 26 years) took part in this study. The gingivae and mucosae were initially cooled using a homogeneous flow of air (15 l/min at 15 degrees C) for 3 min. 20 s after the cooling phase, temperature increases of these soft tissues were sequentially recorded using 48 thermograms per person. This procedure was repeated 4 times for each person examined. The weighted mean of the time constants of the tissue re-warming curves was significantly higher (p less than 0.025) for the periodontitis group (152 +/- 6 s) compared to the clinically healthy group (110 +/- 9 s). The different thermodynamic behaviour between the 2 groups studied indicated differences in the blood-flow and/or its regulation. PMID- 3860514 TI - Periodontal conditions in adolescents with cleft lip, alveolus and palate following treatment in a co-ordinated team approach. AB - The aim of the present investigation was to evaluate the oral hygiene habits and the periodontal conditions of a group of cleft lip, alveolus and palate patients at the end of a longitudinal multidisciplinary treatment. From a total of 120 patients who had been supervised at the University of Berne, Clinic for Pediatric Surgery for at least 18 years in a co-ordinated team approach, 80 were selected on the basis of availability. Plaque control record (PCR), calculus index (CI), gingival bleeding index (GBI), pocket probing depth (PD), loss of attachment (LA) and furcation involvement were recorded. Using the technique and the ruler described by Schei et al., the radiographic height of the alveolar crest from the cemento-enamel junction was determined. Between the different groups of deformities, no statistically significant differences were found for all the clinical parameters with the exception of the mean PD orally and the mean PD bucally which were shallower in the isolated cleft lip group. These differences were attributed to the long-term orthodontic therapy with fixed appliances. When the PD and the LA at the sites adjacent to the cleft region were compared to two "unaffected" control sites, no statistically significant differences were found, whereas the comparison with the radiographic bone loss showed a statistically significant lower bone height. These results may indicate the presence of a long connective tissue attachment without bony support in the cleft region. As a result of inadequate oral hygiene, the patients with cleft lip, alveolus and palate showed beginning periodontitis with loss of attachment and beginning furcation involvement in most of the cases.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860515 TI - Ultrastructure of developing subgingival plaque in beagle dogs. AB - The aim of this study was to describe the ultrastructure of developing subgingival plaque. In 6 beagle dogs, healthy gingiva prevailed after a pre experimental period of intensive plaque control. At the start of the experiment, all oral hygiene measures were withdrawn. Biopsies comprising buccal gingiva and adjacent dental tissues were obtained from premolars and molars on days 0, 4, 7, 21, and 28 and processed for electron microscopy. Sections of day 0 exhibited a junctional epithelium in close contact with the tooth and absence of subgingival aggregations of bacteria on the tooth surface. For each of the subsequent periods studied, some sections did not exhibit subgingival plaque. In the remaining sections with subgingival plaque, almost all bacteria appeared in aggregates attached to the tooth surface. The number of bacteria at the orifice of the gingival sulcus increased with time. Further apically, the micro-organisms formed either a continuous layer of even thickness or, more frequently, discrete microcolonies along the tooth surface. The bacteria comprised practically entirely Gram-negative cocci, rods or spirochetes. The latter were present either mixed with the other types in the discrete microcolonies or constituted the bulk of the continuous layer of plaque. In the apical part of the subgingival plaque, a shift from Gram-negative cocci and rod during the early stages of gingival inflammation, to a predominance of spirochetes in later stages was noted. The study shows that in dogs, starting from a plaque- and gingivitis-free baseline, a predominantly Gram-negative subgingival flora may form within a few days after withdrawal of all oral hygiene measures and that a shift in the bacterial composition of the subgingival plaque takes place during a 4-week period of no oral hygiene. PMID- 3860516 TI - Healing after treatment of periodontal intraosseous defects. IV. Effect of a non resective versus a partially resective approach. AB - 2 regenerative surgical approaches using citric acid conditioning, were compared in the treatment of deep intraosseous periodontal defects. The first approach was non-resective in that no osseous tissue was removed. The second, a partially resective approach, involved reduction of the osseous defect depth by removal of some supporting bone. 16 patients and a total of 26 defects, with probing pocket depth greater than or equal to 7 mm, were included in the study. The depths of the corresponding osseous defect, as revealed during surgery were greater than or equal to 5 mm. The results demonstrated mean gains in probing attachment level of 0.7 mm for the partially resected group and 1.1 mm for the non-resected group. Corresponding gains in probing bone levels were recorded in the defect sites for each group. Probing pocket depth was reduced from 7.5 mm to 4.0 mm in the partially resected group and from 7.9 mm to 5.3 mm in the non-resected group. Both procedures caused loss of attachment and bony support from adjacent tooth surfaces involved by the surgical procedure. Slightly more loss of attachment and bone was experienced by the partially resected group (range 1.2-1.5 mm) than by the non-resective group (range 0.1-0.9 mm). PMID- 3860517 TI - Relationship between some subgingival bacteria and periodontal pocket depth and gain or loss of periodontal attachment after treatment of adult periodontitis. AB - We studied the association between post-treatment periodontal disease activity and subgingival Bacteroides gingivalis, Bacteroides intermedius, spirochetes and motile rods. 20 adults, 22-62 years, with moderate-to-severe periodontitis participated in a split-mouth treatment study. All individual quadrants received supragingival cleaning and in addition, subgingival scaling and a NaHCO3-NaCl H2O2 slurry, subgingival scaling alone, slurry alone, or no subgingival treatment. Post-treatment periodontal disease status was determined over a period of 12 months by changes in probing periodontal pocket depth and probing periodontal attachment level. Subgingival specimens obtained by paper point sampling were evaluated for B. gingivalis and B. intermedius using indirect immunofluorescence and for spirochetes and motile rods using bright light phase contrast microscopy. A total of 142 periodontitis lesions representing all 4 quadrants of the 20 subjects were studied. The relationship between clinical data and bacteria was analyzed using logistic regression. The probability of the study organisms being present in subgingival sites at 3 to 6 months after treatment increased with increased residual pocket depth. The presence of B. gingivalis showed a strong positive association (p less than 0.004) with loss of periodontal attachment. A significant association was also found for spirochetes (p less than 0.008) but not for motile rods (p greater than 0.35) or B. intermedius (p greater than 0.13). Similar results were obtained at 12 months after therapy, except that the presence of motile rods was significantly associated with loss of periodontal attachment (p less than 0.03). Caution must be exercised when using B. gingivalis or spirochetes to evaluate treatment efficacy. If the presence of these organisms was utilized to indicate progressing periodontitis, many active lesions could be identified, and only 1 to 17% and 13 to 43% of sites in remission at 3-6 months after therapy would be expected to harbor B. gingivalis and spirochetes, respectively. The consequences of treating periodontal sites in remission would mainly be limited to cost and inconvenience. However, since several active periodontitis lesions did not reveal the organisms, treatment decisions based solely on the absence of the organisms may result in the omission of needed therapy. As a practical consideration, periodontal treatment should be continued as long as B. gingivalis and maybe spirochetes are detectable in the subgingival microflora. In the absence of these organisms, and until additional periodontal pathogens have become known, the decision to continue or conclude periodontal therapy must b PMID- 3860518 TI - Survival analysis of periodontal sites before and after periodontal therapy. AB - Periodontal diseases appear to progress with bursts of destructive activity at individual sites. One effect of treatment might be to diminish the frequency of such bursts. Survival analysis was employed to seek such effects on the periodontal sites of 16 individuals with prior evidence of destructive periodontal disease. The subjects were monitored at bi-monthly intervals and actively breaking down sites were detected using attachment level measurements and the tolerance method of analysis. When active sites were detected, control sites of equal pocket depth and attachment loss were selected and microbiological and immunological samples were taken. The subjects were treated by modified Widman flap surgery and systemically administered tetracycline. On completion of therapy, bi-monthly monitoring was reinstituted. Life tables were constructed for periodontal sites in each of the 16 subjects prior to and after therapy. A site losing more than 3 mm of attachment at any time interval was considered to have relapsed or "died". Survivor functions were calculated for each time period indicating the % of sites which survived at any time. The subjects were divided into 3 categories on the basis of post-therapy survivor functions. The annual hazard rate in 9 good treatment response subjects (group 1) was reduced from 0.10/year to 0.01/year. The hazard rate of 5 intermediate treatment response subjects (group 2A) was reduced from 0.16/year to 0.04/year and that of 2 poor treatment response subjects (group 2B) from 0.15/year to 0.07/year. Group 2A and 2B individuals were combined and differences were sought in clinical, microbiological and immunological parameters between the good and poor treatment response groups. 5 out of 7 of the poor responding individuals showed elevated humoral antibody responses to 3 or more gram-negative subgingival species tested. Many of the elevated responses in this group were to organisms which are widely distributed and return quickly after therapy such as Fusobacterium nucleatum, Eikenella corrodens, Bacteroides intermedius and Capnocytophaga sputigena. The predominant cultivable microbiota in subgingival samples taken prior to therapy from the good responding group had significantly greater proportions of Actinobacillus actinomycetemcomitans, C. ochracea and B. intermedius than the poor responding group. The latter group showed significantly elevated proportions of F. nucleatum, Peptostreptococcus micros and Streptococcus intermedius. PMID- 3860519 TI - The effect of citric acid and fibronectin application on healing following surgical treatment of naturally occurring periodontal disease in beagle dogs. AB - It has recently been suggested that following the exposure of root surface collagen with citric acid, the addition of topically applied fibronectin might promote healing with a fibrous re-attachment. The purpose of this study was to determine the benefit of citric acid demineralization and fibronectin application in the surgical treatment of severe, naturally occurring periodontal disease in Beagle dogs. The 4 treatment modalities employed were: (1) surgery alone (mucoperiosteal flaps); (2) surgery plus fibronectin; (3) surgery plus citric acid; (4) surgery plus citric acid followed by fibronectin application. Coronal and root surface notches were used as biometric and histometric reference points. Final clinical measurements were recorded 6 weeks post surgically, on the day of sacrifice. Significantly increased amounts of connective tissue reattachment were observed in the areas treated with the citric acid/fibronectin combination. Fibrous re-attachment was enhanced at the expense of epithelial downgrowth and occurred directly to both new and old cementum and exposed dentin, often in a functional manner, i.e., perpendicular to the root surface. Areas treated with the surgery and citric acid technique attained moderate amounts of fibrous re attachment while the other treatment modalities were associated with a long junctional epithelium. The enhanced fibrous re-attachment may be the product of an accelerated coalescing of exposed soft tissue and root surface collagen fibrils, while under the mediating effect of fibronectin. PMID- 3860520 TI - Morphology of polymorphonuclear neutrophils during periodontal disease in the cynomolgus monkey. AB - The polymorphonuclear neutrophil (PMN) appears to be an important cell in the protection of the host from pathogenic periodontal micro-organisms. The purpose of the present histological studies was to observe the emigration of the PMN from the gingival vessels to the periodontal pocket during gingivitis and ligature induced periodontitis in the cynomolgus monkey. 2 adult female monkeys were treated by application of a silk ligature around selected posterior teeth. After 9 weeks, the monkeys were perfused and block sections of both ligated (early periodontitis) and non-ligated (gingivitis) sites were obtained, cut into smaller blocks containing a single interdental area (N = 15 for periodontitis, N = 5 for gingivitis) and processed for light and electron microscopic observations. Morphologically, no differences in PMNs between gingivitis and periodontitis were observed and therefore the following description applies to both disease states. In the vessels, the endothelial cells appeared to be actively involved in PMN emigration, maintaining long processes which surrounded the PMNs. Within the connective tissue, the PMNs maintained their typical morphology which included polylobated nuclei and numerous lysosomal granules. Many intact PMNs were observed intercellularly within the connective tissue and the epithelium. Within the periodontal pocket, a multilayer of PMNs surrounded the plaque mass. Cells with numerous bacteria-containing phagolysosomes were observed with increasing frequency as they approached the plaque. Deeper within the bacterial deposit, PMNs were seen in varying stages of degeneration. These histologic studies, when interpreted in the light of reports of severe, rapidly-progressive periodontitis in patients with PMN disorders, suggest that the interaction of PMNs with bacterial plaque may serve to maintain a defensive boundary which protects the host tissues from irreversible destruction. PMID- 3860521 TI - Intrarenal chloroma causing obstructive nephropathy: CT characteristics. AB - A patient presented with unilateral obstructive nephropathy due to a granulocytic sarcoma (chloroma) arising within the renal pelvis. To the best of our knowledge, granulocytic sarcoma has not previously been described either arising in the urinary system or occurring during induced remission of disease. Even in the absence of other evidence of active disease, with a history of leukemia, this lesion should be considered in the differential diagnosis of collecting system tumors, as recommended therapy is nonsurgical. PMID- 3860522 TI - Potential genetic gains from producing bulls with only sires as parents. AB - Micromanipulation of sperm and ova has been suggested as a means to produce progeny of two sires instead of a sire and dam. Selection schemes taking advantage of this technology could produce genetic gains 1.5 to 2 times current gains. An optimum strategy both genetically and economically would be to breed 99% of the population to young sires and 1% to progeny-tested sires. The genetic pathway from sires to sons could become the only pathway affecting genetic gain; this would eliminate problems of cow evaluation and would give artificial insemination organizations more control over quality of young sires. Inbreeding would not be a problem, and few other technologies could offer superior rates of genetic gain. PMID- 3860523 TI - What we know and don't know about dietary fluoride supplements--the research basis. AB - The administration of dietary fluoride supplements has been shown unequivocally to be an effective procedure for preventing dental caries, approaching and sometimes exceeding the benefits generally expected from the consumption of fluoridated water. The latter, however, is far more economical and feasible for benefiting large numbers of children. Prescribing supplements is still recommended for children drinking water with suboptimal amounts of natural fluoride. There is a need to clarify the role of prenatal fluoride administration. As there is uncertainty about the optimal time to initiate fluoride supplementation, the period during which such supplementation should be continued is also unclear. Some studies have addressed the issue, but their findings are equivocal. The decision on when to stop supplementation should be based on the professional judgment of a child's dentist. Combined therapies should be limited to children who are highly susceptible to caries attack. Fluoride supplementation will result in obvious dental fluorosis only if the procedure is misused and reliable dosage schedules have not been formulated; if misused, it is clearly contraindicated in communities with greater than 0.7 ppm fluoride in their water supplies. Used properly and when indicated, dietary fluoride supplementation is a patently safe and highly effective measure for the prevention of dental caries. PMID- 3860524 TI - Attitudes of dentists and physicians toward the use of dietary fluoride supplements. AB - One of the major goals of the reported research was to determine how consistent health practitioners' knowledge, attitudes and practices are with the consensus of the public health and research communities regarding caries prevention. Both professions are aware of current caries preventive methods, but have very mixed reactions toward their relative effectiveness in the United States, today. Dentists and physicians see a great deal of value in community water fluoridation and see some effectiveness from fluoridating school water supplies. They regard the prescription of dietary fluoride supplements as an effective caries prevention measure, but to a much lesser extent, and base their use of these prescriptions on the age of the child and the level of fluoride in the community's water system. Topical fluoride applications and fluoride dentifrices, as well, are thought to be very effective preventive measures by only a small proportion of dentists and physicians, as are fluoride mouth rinses. Dentists and physicians rate systemic fluorides as effective more often than they do other selected methods, as would the research community; but they are not as solidly behind these, as evidence would suggest they should be. Both community water fluoridation and dietary fluoride supplements are known to be very effective caries prevention measures, yet only 66 percent of the physicians think community water fluoridation is very effective and only 37 percent think dietary fluoride supplements are very effective.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860525 TI - Ways to improve/increase appropriate use of dietary fluorides. AB - Dietary fluoride supplements are not now being prescribed appropriately by health care providers, an example of the slow rate of acceptance of an effective caries preventive regimen available for nearly a quarter-century. Industry, the American Dental Association Council of Dental Therapeutics, the American Academy of Pediatric Dentistry, the American Association for Dental Research, the National Foundation of Dentistry for the Handicapped, the W.K. Kellogg Foundation, and the National Institute of Dental Research have all initiated or supported a variety of activities to educate health care providers on the use of fluoride supplements and developing educational materials for providers to use in educating the public. Barriers to appropriate use include the following factors: complexity of the dosage schedule; priority of preventive regimens in educational institutions; economic factors; and lack of public knowledge--clearly a barrier to their acceptance, appropriate use, and compliance. Dental school faculty have a responsibility, to both their students and the general public, to provide appropriate information about dietary fluoride supplements and their use. Emphasis should be placed on educating dental students on the best ways of achieving compliance in their patients. Federal agencies might join the ranks as well, along with the individual dentist, in educating all relevant groups and promoting health through disease prevention. PMID- 3860526 TI - Observations of SnF2-treated human enamel using scanning electron microscope. AB - Human enamel was ground flat, treated for 4 min with 8 percent SnF2 and then immersed in water for 5 sec, 5 min, 60 min and 24 h. Products formed on the enamel included round globular and triangular-shaped crystalline structures which were removed after the treated enamel specimens were immersed in water for 24 h. In contrast, the non-water-washed treated enamel specimens had a distinct precipitate. PMID- 3860527 TI - Effect of motivation on the oral health of French schoolchildren. PMID- 3860528 TI - The sealed composite resin restoration. AB - This composite restoration-sealant combination is only to be considered for the small pit and fissure caries lesion. Bitewing radiographs should indicate no smooth surface interproximal caries in the teeth to be restored in this manner. All teeth treated with the composite restoration-sealant combination should be carefully evaluated at periodic recall visits. There is no single perfect conservative restoration for the young patient. Each of us must decide, on an individual basis, the appropriate type of procedure we elect to use. The sealed composite resin restoration can be very effective in carefully selected cases. PMID- 3860529 TI - Periapical healing after apicocurettage during apexification. AB - A case is presented in which conventional apexification with CaOH-CMCP paste was not successful at first. A minimal apicocurettage was done. Subsequently, the periapical bone healed and a dry, hard apical stop formed at the apical foramen. A gutta percha root canal filling was packed from the coronal access. This procedure offered a surgical alternative to an alloy retrofilling, when the usual apexification process was not successful. PMID- 3860530 TI - Dietary iron--chemistry and bioavailability. PMID- 3860531 TI - Appearance of dentin gamma-carboxyglutamic acid-containing proteins in developing rat molars in vitro. AB - An in vitro model of mineralization was devised in order to study the developmental appearance of dentin gamma-carboxyglutamic acid-containing proteins (DGPs) in relation to the onset of mineralization. Maxillary third molars from 11 day-old rats were cultured with or without fetal calf serum (FCS) as modified from Navia et al. (1984). Molars were incubated without radiolabel, or with either 45CaCl2 (5 microCi/ml) for 24 hr at various stages of a ten-day culture period or [3H]-leucine (10 microCi/ml) for 24 hr at the eighth day of culture. Molars were lyophilized and extracted with 10% formic acid overnight at 4 degrees C. DGPs in extracts were detected by immunologic and chromatographic techniques; DGPs in molar sections were detected by immunolocalization using indirect immunofluorescence. Molar development was evaluated histologically using the Von Kossa staining technique. Molars cultured with FCS showed histologic evidence for mineralized dentin and enamel and a significant increase in 45Ca uptake after the sixth day in vitro. Eleven-day-old molars in vivo and molars cultured without FCS showed no evidence of the presence of mineralized tissues. [3H]-Leucine-labeled DGPs were isolated and identified by affinity and reversed-phase high-performance liquid chromatography and by gel electrophoresis from both mineralized and unmineralized molars. DGP antigens were localized immunohistochemically using rabbit anti-rat antibodies raised against a highly purified DGP preparation. In the unmineralized molar, antigenicity was seen in odontoblasts but not in predentin matrix, preodontoblasts, or in any other cell type. Antigens in the mineralized molar were localized to odontoblasts and dentin.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860532 TI - Effect of anti-oxidants on growth and lactic acid production by Streptococcus mutans. AB - The effects of three anti-oxidants--tertiary butylhydroquinone (TBHQ), butylated hydroxyanisole (BHA), and butylated hydroxytoluene (BHT)--on both growth and lactic acid production by eight cariogenic strains of Streptococcus mutans were investigated. Synergistic inhibitory effects of potassium sorbate on lactic acid production were also determined. All three anti-oxidants are phenolic derivatives and are commonly used in food systems due to their excellent "carry-through" properties during processing. Growth inhibition was determined by turbidity measurements at 600 nm. Lactic acid was assayed by gas chromatography, and bacterial DNA was assayed by the diphenylamine reaction. There were reduced growth levels of S. mutans due to the anti-oxidants and potassium sorbate for at least 12 hr, with TBHQ and BHA still inhibiting growth at 24 hr. Nearly all concentrations of anti-oxidants and potassium sorbate reduced lactic acid production by S. mutans, but only TBHQ significantly inhibited lactic acid production when the amount of acid per microgram DNA was calculated. A synergistic reduction of lactic acid production by S. mutans does occur in most combinations of potassium sorbate with anti-oxidants. PMID- 3860533 TI - From mice to men. PMID- 3860534 TI - Accomplishments, opportunities, and challenges in oral health research. PMID- 3860535 TI - Effects of extracellular plaque components on the chlorhexidine sensitivity of strains of Streptococcus mutans and human dental plaque. AB - An in vitro study was undertaken to determine the effects of sucrose-derived extracellular plaque components on the sensitivity of selected oral bacteria to chlorhexidine (CX). Cultures of Streptococcus mutans HS-6, OMZ-176, Ingbritt C, 6715-wt13, and pooled human plaque were grown in trypticase soy media with or without 1% sucrose. The sensitivity to CX of bacteria grown in each medium was determined by fixed-time exposure to CX and subsequent measurement of 3H thymidine uptake. One-hour exposure to CX at concentrations of 10(-4) M (0.01% w/v) or greater substantially inhibited subsequent cellular division among all the S. mutans strains and human plaque samples tested. An IC50 (the CX concentration which depressed 3H-thymidine incorporation to 50% of control level) of close to 10(-4) M was noted for S. mutans strains HS-6, OMZ-176, and 6715-wt13 when grown in the presence of sucrose. The same strains grown in cultures without added sucrose showed about a ten-fold greater sensitivity to CX (IC50 close to 10(-5) M). A three-fold difference was noted for S. mutans Ingbritt C. Only a slight increase in the IC50 was noted for the plaque samples cultured in sucrose containing media, but their threshold for depression of 3H-thymidine uptake by CX was lower than that for the sucrose-free plaque samples. The study showed that extracellular products confer some protection against CX to the bacteria examined, and provided an explanation for the disparity between clinically recommended concentrations for plaque suppression and data on in vitro susceptibility.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860536 TI - Changes in dentin appositional rates during pregnancy and lactation in rats. AB - Dentin appositional rates were determined in pregnant and lactating rats and compared with those in non-pregnant, age-matched controls. Appositional rates were calculated from measurements of distance between fluorescent mineralized tissue markers. There were significant increases in dentin apposition during pregnancy, with the greatest increases seen in the first two weeks. Dentin appositional rates decreased significantly during mid-lactation. These results indicate that homeostatic changes during pregnancy and lactation affect mineralized tissue accretion. PMID- 3860538 TI - Intra-oral air mercury released from dental amalgam. AB - Intra-oral air was analyzed for mercury (Hg) vapor concentration in 46 subjects, 35 of whom had dental amalgam restorations. Measurements were made with a Jerome Hg detector both before and ten min after chewing stimulation. Subjects with dental amalgams had unstimulated Hg vapor concentrations that were nine times greater than basal levels in control subjects with no amalgams. Chewing stimulation in subjects with amalgams increased their Hg concentration six-fold over unstimulated Hg levels, or a 54-fold increase over levels observed in control subjects. Concentrations of Hg measured in intra-oral air larger than those reported in expired air were attributed to the rate and direction of air passage across amalgam surfaces. There were significant correlations between Hg vapor released into intra-oral air after chewing stimulation and the numbers and types of amalgam restorations. It is concluded that intraoral air is a reliable physiological indicator of Hg released from dental amalgam that may reflect a major source of chronic Hg exposure. PMID- 3860537 TI - Enamel microhardness change and plaque pH measurements in an intra-oral model in humans. AB - Changes in plaque pH and microhardness of bovine enamel slabs were evaluated with a seven-day intra-oral cariogenicity test (ICT). The test enamel slabs were mounted in prosthetic appliances with a Dacron mesh cover for enhancement of microbial colonization. Three percent solutions of sucrose, sorbitol, and xylitol were evaluated as four daily extra-oral immersions of 10 min each, for seven days, and the results were compared with baseline experiments (no daily immersions). The pH was measured with antimony electrodes on one-day and seven day ICT plaque samples that were challenged with a one-minute immersion in the studied substrates. Plaque samples in the baseline experiments were challenged with 3% sucrose. The enamel softening was assessed with measurements of microhardness. Sucrose challenge caused pH depression with both the baseline and the sucrose-immersed plaque. Sorbitol and xylitol challenge did not depress the plaque pH. Compared with the baseline, sucrose immersions caused enamel softening; sorbitol and xylitol did not. PMID- 3860539 TI - Serial measurements of intra-oral air mercury: estimation of daily dose from dental amalgam. AB - Serial measurements of Hg concentration in intra-oral air were made during and after chewing stimulation in 35 subjects with occlusal amalgam restorations. Hg concentrations remained elevated during 30 min of continuous chewing and declined slowly over 90 min after cessation of chewing. By curve-fitting and integration analysis of data during these time periods (including corrections for respiratory volume, retention rate of inspired Hg, oral-to-nasal breathing ratios, and consumption of three meals and three snacks per day), we calculated that all subjects received an average daily Hg dose of approximately 20 micrograms. Subjects with 12 or more occlusal amalgam surfaces were estimated to receive a daily Hg dose of 29 micrograms, whereas in subjects with four or fewer occlusal amalgam surfaces, the dose was 8 micrograms. These Hg dosages from dental amalgam were as much as 18-fold the allowable daily limits established by some countries for Hg exposure from all sources in the environment. The results demonstrate that the amount of elemental Hg released from dental amalgam exceeds or comprises a major percentage of internationally accepted threshold limit values for environmental Hg exposure. It is concluded that dental amalgam Hg makes a major contribution to total daily dose. PMID- 3860540 TI - Prevalence of dental fluorosis after fluoride-gel treatments in a low-fluoride area. AB - The goal of the present investigation was to study whether periodic use of fluoride-gel treatments resulted in an increased prevalence of dental fluorosis. 269 children, from 14 to 16 years of age, who had received semi-annual or quarterly fluoride-gel treatments were examined for possible fluoride-induced enamel changes. Further, in order to determine the amount of fluoride retained during the gel treatment, the expectorate was analyzed in 18 younger children presently participating in the prophylaxis program. It was found that the retention of fluoride averaged 7.3 mg per treatment (up to 0.5 mg fluoride per kg body weight). An increased prevalence of dental fluorosis was not observed, even after up to five yearly treatments were given during tooth formation periods. The background prevalence of dental fluorosis in a low-fluoride area in Denmark is described. PMID- 3860541 TI - Fluoride uptake in plaque-covered enamel after treatment with the fluoride lacquer Duraphat. AB - The amount of alkali-soluble and alkali-insoluble fluoride was determined in human enamel after one- and six-hour treatments with Duraphat. The application was carried out on: (1) slightly demineralized enamel covered with artificial plaque, (2) cleaned, slightly demineralized enamel, and (3) sound enamel without pre-treatment. After a single Duraphat treatment lasting six hours, fluoride uptake was higher than after Duraphat treatment for just one hour in all experimental groups. More fluoride was acquired in both slightly demineralized, plaque-covered and slightly demineralized, cleaned enamel than in sound enamel. Plaque significantly hampered the formation of alkali-soluble fluoride precipitation on demineralized enamel, but its influence on the amount of fluoride taken up by the enamel was minor. PMID- 3860542 TI - Dental development in precocious puberty. AB - One hundred and one children with precocious puberty were given an oral examination. Dental root development was assessed using panoramic radiographs. All mandibular canines, pre-molars, and molars which could be visualized without apparent distortion were included. The patients were grouped for analysis according to the etiology of their precocity, e.g., McCune-Albright syndrome, familial male, congenital adrenal hyperplasia, central nervous system lesions, and idiopathic precocious puberty. Dental development was significantly retarded relative to their chronological age in patients with idiopathic precocious puberty. However, no significant abnormal dental development was detected in any of the other groups. Individual oral-facial growth and development remain the primary considerations for timing orthodontic treatment. PMID- 3860543 TI - An erosion test for dental cements. AB - A new method for the in vitro measurement of the erosion of dental cements is described which allows repeated, gentle removal of loose surface debris and provides a direct quantitative measurement of material lost. A linear relationship for erosion against time is demonstrated for a glass polyalkenoate material under mildly acidic conditions. This test method is applicable to all acid/base-type cements and gives results comparable to those from in vivo tests. PMID- 3860544 TI - Proceedings of the sixty-second American Association of Dental Schools annual session. PMID- 3860545 TI - Advice for the consumer 'milieu'. PMID- 3860547 TI - Recommendations questioned. PMID- 3860546 TI - To test or not to test. PMID- 3860549 TI - A guide to the dental equipment marketplace. PMID- 3860548 TI - Concern with drugs during pregnancy. PMID- 3860550 TI - A stepwedge quality assurance test for machine and processor in dental radiography. AB - A quick, inexpensive quality assurance test for clinical dental radiography is described. Data on operator error in matching test radiographs and the use of the test in some radiographic facilities for 3 years indicate that the test can be useful in monitoring film processing and X-ray machine output in clinical practice. PMID- 3860551 TI - Periodontal restorative interrelationships: the isolated restoration. AB - Only by controlling plaque early and consistently, before periodontal and restorative problems require intervention in the form of a full prosthetic and periodontal reconstruction, the continued maintenance of a full dentition is assured. Plaque control is not merely continued prophylaxes, but a striving for a healthy biologic situation with the placement of every restoration. This is attainable only through ensuring a normal attachment apparatus and establishing that all restorative margins be accessible to plaque control measures. Deep, subgingival restorations are not only difficult to place and finish correctly, but, by providing an environment conducive to microbial plaque retention and proliferation, also lead to inflammatory periodontal destruction and recurrent carious lesions. Early detection, although difficult, is essential to avoid excessive destruction of the tooth and its supporting structures. A deterrent to early detection may be the response of the patient's tissue. Paradoxically, if the patient's periodontal tissues respond in a fibrotic manner to early gingival inflammation, rather than in a dramatic, edematous manner, the situation may appear clinically healthy. Waerhaug discussed "submarginal gingivitis," a situation in which the tissue will appear pink and firm, elicit to exudate or bleeding on probing, and mimic healthy to the casual examiner. When this is coupled with the difficulty inherent in detecting early recurrent carious lesions, resulting from the radiographic superimposition of the existing restoration or the deep subgingival extent of the restoration, the situation becomes all the more demanding of the practitioner's efforts. PMID- 3860552 TI - The identification of a 'John Doe'. AB - This paper presents a case report describing the forensic dental investigation that enabled the identification of a decomposed dead body. The body was discovered under such circumstances that there were no known missing persons to account for its occurrence and no clues as to a possible identify. Through teamwork, fragments of nonspecific information were pieced together to point to a possible victim who had disappeared a year earlier and 1,400 miles away. Subtle dental and anthropologic peculiarities were detected and identified on antemortem medical radiographs made 3 years earlier, thus allowing a successful match. The extent of our nation's missing persons and unidentified dead problem is discussed. In a country where almost 40,000 cases of unsolved missing persons are recorded and 2,000 to 10,000 unidentified dead bodies remain anonymous, cooperation among jurisdictions and the use of dental evidence in a computerized form are the likely means of approaching this problem. PMID- 3860553 TI - Bifid mandibular canals in panoramic radiographs. AB - The purpose of this study was to identify and classify specific anatomic variations of the mandibular canal for which we have suggested the term "bifid mandibular canals." A total of 6,000 panoramic radiographs were studied, and those that contained these canals were identified. A classification of bifid mandibular canals was developed from this material. In addition, as the different variations of these bifid mandibular canals may present a number of problems in clinical practice, some solutions to these problems are presented. In our sample, there were 57 bifid mandibular canals, an incidence of 0.95%. These results suggest that the presence of bifid mandibular canals is not a rare finding. If panoramic equipment is not available, the lateral jaw view may be taken to study the mandible for the anesthetic, surgical, and prosthetic problems. PMID- 3860554 TI - Characteristics and satisfaction of the patients of male versus female dentists. AB - With rising numbers of women entering dental practice, and relatively little known about these practices, this study seeks to characterize the practices of female dentists. Characteristics and satisfaction differences of patients between male and female practitioners were examined. A matched-pair design of 13 men and 13 women in general private practice in Connecticut was conducted. Questionnaires, designed to evaluate satisfaction and patient sociodemographics, were distributed to 25 patients from each practice. Patients were similar to utilizers as described by the US National Health Interview Survey, and scored slightly higher on the Dental Satisfaction Questionnaire than a national sample. Few differences were found between the patients of male and female dentists, but significant differences were found in patient incomes, satisfaction with cost, and satisfaction with access, with the patients of women giving more favorable satisfaction ratings on cost and access. These findings are encouraging to women entering private practice as they are perceived by patients to deliver care equal in quality to their male counterparts. PMID- 3860555 TI - The therapeutic effect of toothbrushing on naturally occurring gingivitis. AB - A majority of previous toothbrushing studies have examined proposed virtues of particular brushing techniques or the relative cleaning ability of various toothbrushes. A smaller number were concerned with their role in prevention of gingivitis. Whether toothbrushing could be therapeutic in naturally occurring gingivitis was tested in 40 teenagers aged 12 to 14 years. Groups from two public schools were examined for gingivitis and plaque. Students from both groups were given a soft multi-tufted toothbrush and nonfluoridated toothpaste to be used daily. Students at one school were given a single intensive oral hygiene session. All students were reexamined 42 days later and given a thorough prophylaxis. Final readings were obtained 84 days after baseline and the results analyzed statistically. Sign test analysis disclosed a significant (P less than .01) improvement in plaque and gingivitis scores for both groups. Wilcoxon tests of patient means revealed a significant improvement in plaque scores, whereas gingivitis means were more variable. Chi square analysis between groups showed that the groups receiving oral hygiene instructions had significantly better (P less than .01) plaque and gingivitis scores at session 2. Gingivitis differences were generally significant at session 3. Toothbrushing has a therapeutic effect on naturally occurring gingivitis, enhanced by oral hygiene instruction. PMID- 3860556 TI - Triangular-shaped radiolucent area between roots of the mandibular right canine and first premolar. AB - The squamous odontogenic tumor is a rare odontogenic neoplasm occurring primarily in the anterior maxilla and posterior mandible. The clinical presentation is that of tooth mobility with a semicircular or triangular, well-defined radiolucent area. Histologic features include dense fibrous connective stroma with scattered islands of bland epithelium exhibiting no ameloblastomatous features. Conservative surgical treatment in most cases is sufficient; however, lesions in the maxilla may require more extensive surgical procedures to ensure resolution. PMID- 3860557 TI - Guidelines for infection control in the dental office and the commercial dental laboratory. Council on Dental Therapeutics. Council on Prosthetic Services and Dental Laboratory Relations. PMID- 3860558 TI - Report of quarterly survey of dental practice: gross income report. Bureau of Economic and Behavioral Research. PMID- 3860559 TI - Advertising standards of the American Dental Association. PMID- 3860560 TI - [Permanent-wear of gas-permeable rigid lenses: a new solution for the aphakic patient]. AB - The authors reviews his experience during a period of six years with permanent wear gas-permeable hard contact lenses. Problems with dislocation of the lens during sleep was solved by using a diameter of 11 mm. Corneal respiration was maintained due to the oxygen permeability of the new material. A new fitting technique was developed advising daily wear for 8 days post-operatively, extended wear at the 15th day, and the final lens given after 45 days. The results obtained suggests that the technique is a very real alternative to intraocular lens implantation. PMID- 3860561 TI - Detection of 5-bromodeoxyuridine (BrdUrd) incorporation by monoclonal antibodies: role of the DNA denaturation step. AB - Immunochemical detection of cells that incorporate 5-bromodeoxyuridine (BrdUrd) requires prior denaturation of DNA in situ to make BrdUrd binding sites accessible to the antibodies. A technique is described in which the DNA denaturation step is facilitated by a) prior dissociation of histones from DNA and b) the use of low ionic strength buffer in which the cells are suspended during heating. Dissociation of histones is achieved by cell treatment with 0.08N HCl at 0 degree C, which a) increases accessibility of DNA to propidium iodide (and following the denaturation to the antibodies); b) lowers stability of DNA to thermal denaturation; c) decreases differences between various cell types due to variability in chromatin structure; and d) ensures more complete DNA denaturation. Cell heating (80-95 degrees C) at low ionic strength (1 mM Na+) eliminates the need for formamide and results in extensive and rapid DNA denaturation. The method was applied in Friend leukemia, L1210 and HL-60 cell lines, and to bone marrow, experimental animal tumor and primary human tumor cells. PMID- 3860562 TI - A recommended procedure for ultrastructural immunohistochemistry on small human tissue samples. AB - Various fixation and staining procedures for the demonstration of surface and cytoplasmic antigens have been described. An immunostaining procedure was sought that would allow the demonstration of these antigens, especially in small human tissue samples at the ultrastructural level. A modification and adaptation of the technique of Eldred, Zucker, Karten, and Yazula (J Histochem Cytochem 31:285, 1983) was applied on several varieties of human tissue, including liver, skin, and lymphoid tissue, using monoclonal and polyclonal antibodies in an indirect peroxidase procedure. In this way a reliable and generally applicable procedure was developed that satisfied the following demands: Use of a universal fixative that allows preservation of the antigenicity of various antigens; Adequate penetration of the tissue by the immunological reagents; Optimal preservation of subcellular structures; and Possibility to store the tissue samples for considerable periods of time. PMID- 3860564 TI - CFU-gm colony formation of peripheral blood and bone marrow in adult acute leukemia at presentation, during remission, and at relapse. AB - Granulocyte/macrophage colony-forming unit (CFU-gm) formation was studied simultaneously in bone marrow and peripheral blood of 52 previously untreated adult patients with acute non-lymphocytic (ANLL) and 36 with acute lymphoblastic leukemia (ALL). They were followed during induction therapy at monthly intervals while in remission and in 19 ANLL and 22 ALL cases, until relapse. Patients showing a decreased colony number in the marrow but normal or increased colony numbers in the peripheral blood had a high probability of entering remission. Non responding patients displayed an opposite pattern. The higher the degree of marrow repopulation with granulocytic progenitor cells after induction treatment, the longer remission duration and survival for ANLL patients and the longer survival for ALL patients. CFU-gm formation returned to normal in the early stages of complete remission, but then declined progressively. At ANLL and ALL relapse, colony growth was reduced markedly while cluster formation remained normal. The number of marrow colonies and clusters in ANLL were significantly higher at first and second relapse compared to the growth pattern at first presentation. A similar trend had been observed in ALL, suggesting a selection advantage. PMID- 3860563 TI - Structural requirements of immunoglobulin G for binding to the Fc gamma receptors of the human tumor cell lines U937, HL-60, ML-1, and K562. AB - Fc receptors (FcR) on U937, HL-60, ML-1, and K562 cells were characterized by using competitive binding assays and EA rosette inhibition studies. Like human monocytes, U937, HL-60, and ML-1 cells bound monomeric human IgG Fc with high affinity and mildly reduced and alkylated human IgG and Fc with a somewhat diminished affinity. In contrast, K562 cells had a much lower affinity for monomeric human IgG or Fc. Concentrations of these proteins as high as 10(-5) M were needed to completely block EA rosette formation. There was no binding of reduced and alkylated IgG and Fc. We assessed the influence of various segments of IgG on FcR interactions by using human pFc', rabbit Facb, mouse IgG2b-IgG2a hybrid Ig, and also studied the effect of reduction of the interchain disulfide bonds. The FcR on all four cell types bound rabbit IgG but not rabbit Facb or human pFc', suggesting that rabbit C gamma 3 domains are required for FcR interaction and that isolated human C gamma 3 domains do not have a human FcR binding site. Murine IgG2a, but not IgG2b, was cytophilic for U937, HL-60, and ML 1 cells. Binding studies with the use of several mouse myeloma variant Ig molecules having hybrid gamma 2b-gamma 2a heavy chains showed that variants with a complete gamma 2a Fc region bound to these FcR-like IgG2a, whereas those having gamma 2a sequences only in the C gamma 3 region and in a short adjacent segment of the C gamma 2 region behaved like IgG2b and did not bind. These results suggested that additional murine gamma 2a sequences are required for FcR binding. Interestingly, the Fc fragments from murine proteins with a complete gamma 2a Fc region bound only to a limited extent. These fragments are shorter than the human IgG1 Fc fragments, and they lack that segment of the hinge region that includes the interchain disulfide bonds. Cleavage of the interchain disulfide bonds of murine Ig having a complete gamma 2a Fc region diminished binding to a similar extent as that observed with human IgG. Together, these findings provide additional insight into the roles of the hinge, C gamma 2, and C gamma 3 regions of human, rabbit, and mouse IgG in their interaction with the FcR of human tumor cells. PMID- 3860565 TI - [Comprehensive approach to cleft lip and palate at our University Hospital]. PMID- 3860566 TI - [Temporary cementation of a bridge]. PMID- 3860567 TI - [Questions and answers on hiring employees in the dentist's office]. PMID- 3860568 TI - [To what extent can we keep our own teeth? Endodontic approach]. PMID- 3860569 TI - [To what extent can we keep our own teeth? Periodontic approach]. PMID- 3860570 TI - [To what extent can we keep our own teeth? Indications for extraction]. PMID- 3860571 TI - [Check-up and diagnosis in endodontics]. PMID- 3860572 TI - [Systematization of endodontics]. PMID- 3860573 TI - [Endodontics and accidents]. PMID- 3860574 TI - [Management of early phases of periodontal diseases]. PMID- 3860575 TI - [Diagnosis and management of cystic diseases of the oral cavity]. PMID- 3860576 TI - [Electron microscopic study on the structure and the function of the granulosa cell in the human ovary--ultrastructure and 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD) activity]. AB - The cytodifferentiation, subcellular steroidogenic sites in the granulosa cell of the developing follicle were investigated using electron microscopic cytochemistry. The follicular cell in the primordial follicle already had a few lipid droplets. In the secondary follicle, the granulosa cell had a round nucleus, rough endoplasmic reticulum, lipid droplets, Golgi apparatus, microfilament, rod-shaped mitochondria with lamellar cristae and a small amount of smooth endoplasmic reticulum. In particular, the granulosa cell in the preovulatory follicle considered to be a transitional form to the steroid secreting cell was characteristic of rough endoplasmic reticulum, lipid droplets, mitochondria with lamellar or tubular cristae and moderately well developed smooth endoplasmic reticulum. On the other hand, the granulosa cell in the postovulatory follicle revealed a typical steroid-secreting activity showing abundant lipid droplets, round mitochondria with tubular or vesicular cristae, well developed smooth endoplasmic reticulum and lysosomes. Reaction products for 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD) activity were localized on tubular or lamellar cristae and inner membrane of the mitochondria, and on the membrane of smooth endoplasmic reticulum in the granulosa cell of the preovulatory as well as of the postovulatory follicle. From these facts, it is suggested that the granulosa cell in the preovulatory follicle already has a steroid-secreting activity and might play an important role in human reproduction. PMID- 3860578 TI - [Fundamental appraisal of orthodontic application of computed tomography]. PMID- 3860577 TI - [Process of bone induction--bone induction factors]. PMID- 3860579 TI - [Development of tooth germ culture and in vitro-in vivo tumorigenesis studies]. PMID- 3860580 TI - [Studies on dental psychosomatic patients]. PMID- 3860581 TI - [Evaluation of the effect of training dental students in health centers]. PMID- 3860582 TI - [Electron microscopic study of bacterial colonization in the fissures of rat molars during eruption]. PMID- 3860583 TI - [Analysis of sialograms: microradiograms of mouse parotid glands with reduced saliva excretion]. PMID- 3860584 TI - [Effect of experimental cuspid rise on the masticatory system]. PMID- 3860585 TI - Adenosine triphosphate degradation in specific disease. AB - Two hypotheses concerning adenosine triphosphate (ATP) degradation are examined: The metabolic basis of specific disorders involves ATP degradation, and uric acid and its precursors are measurable body fluid markers of ATP degradation. These hypotheses are examined by discussing human models of ATP degradation, methods for measurement of ATP degradation, and disorders of ATP degradation. PMID- 3860586 TI - Carcinoma of the tongue and floor of the mouth. Preliminary results of a multidisciplinary approach. AB - Eighty-five patients (74 males, 11 females) with untreated squamous-cell carcinoma of the tongue (40 patients) and the floor of the mouth (45 patients) underwent a multidisciplinary treatment. FOLLOW-UP: 6-72 months (median 52 months). T1-4N0M0 lesions (tongue; 32 patients; floor of mouth, 32 patients) were treated with cryosurgery (T1-2: 1-2 sessions, T3-4: 2-4 sessions) and contemporaneously with CMF (cyclophosphamide, methotrexate, fluorouracil) (T1-2: 2 courses; T3-4: 3 courses). 15-20 days after the end of cryo-chemotherapy the patients underwent TCT (T1: 50 Gy to the tumour and lymph nodes; T2-3-4: same with an extra dose of 10-15 Gy to the primary lesion). T1-4N1-3M0 patients (tongue: 8, floor of mouth: 13) received the same cryotherapy and chemotherapy, followed by surgery (13 extended suprahyoid dissections, 8 conservative laterocervical dissections, 1 RND). The actuarial survival rate of patients with tongue tumours after 6 years was 81.4% (N0 87.1%; N+ 60.0%). Four months after treatment, 35 patients had reached complete remission (CR). The probability of remaining in CR for 6 years was 53.6% (N0 56.1%; N+ 50.0%). For tumours of the floor of the mouth the actuarial survival rate was 55.2% (N0 56.5%; N+ 48.6%). Four months after treatment, 38 patients had reached CR. The probability of remaining in CR for 6 years was 59.9% (N0 61.5%; N+ 59.3%). A controlled study is recommended in the light of these results and the conservative nature of the protocol. PMID- 3860587 TI - Immediate repair of mandibular defects following surgery for carcinoma of the lower alveolus and gingiva using a pectoralis major osteomyocutaneous flap. AB - During the two years from 1981 to 1983, a pectoralis major myocutaneous island skin flap, with the 5th rib or sternum, has been used for immediate repair of mandibular defects following surgery in five cases of carcinoma of the lower alveolus and gingiva. In these 5 patients with segmental and hemimandibulectomy, immediate mandibular reconstruction was performed simultaneously using a flap with the 5th rib or the sternum. Thereafter, in 3 of them, the contour and function of the mandible were restored by prosthetic appliances. In the remaining 2 patients prostheses could not be used because of mandibular discontinuity due to removal of a portion of the graft because of postoperative infection and pseudo-arthrosis. Mandibular reconstruction using the osteomyocutaneous flap is advantageous in the restoration of the contour and function of the mandible. Some problems concerning the reconstruction will be reported. PMID- 3860588 TI - The superior orbital fissure syndrome. AB - The superior orbital fissure syndrome is a very rare condition, characterized by a fixed dilated pupil, ptosis and proptosis of the eye and ophthalmoplegia. We have had the opportunity to observe a number of such cases, and now report four of them. PMID- 3860589 TI - Delayed spontaneous retrobulbar haemorrhage. A case report. AB - Retrobulbar haemorrhage is an important complication. The extremely infrequent condition of a spontaneous haemorrhage occurring three days after the injury is presented. PMID- 3860590 TI - Total condylar prosthesis for alloplastic jaw articulation replacement. AB - Increasing attention has been paid to the development and testing of endoprostheses for the mandibular joint during the past few years. Theoretical considerations and knowledge of the compressive forces acting on this joint during rotational movements of the jaw induced us to concentrate our efforts on complete artificial joints right from the start. The clinical results obtained with individually-produced total endoprostheses made of Wisil for the mandibular joint are described. So far, 9 such artificial joints have been implanted in 6 patients. The post-operative assessment of jaw function by the patients, the clinical findings, tooth load measurements and jaw tracing were used to estimate the success of treatment. A total mandibular joint prosthesis which is completely different in regard both to material and shape of the artificial condyle, based on the experience gained so far, is presented. PMID- 3860591 TI - Three dimensional digitization of the face and skull. AB - The possibility of using computer-aided design as a tool for the planning and simulation of facial reconstruction surgery is discussed and has been shown to be feasible. Methods of acquiring the essential measurements on the facial surface and the underlying bone structure in a computer-compatible form are described, including a new approach which has been implemented using a system of fanned laser beams and a television camera for data acquisition. A mathematical analysis of the properties of this kind of imaging system is given. Finally the requirements of a complete aid to surgery system based on this approach are outlined and plans for the implementation of such a system are described. PMID- 3860592 TI - Intratumoral ligation in the management of orofacial cavernous haemangiomas. AB - After a short comment on the essential data concerning the pathology, clinical aspects and treatment of orofacial haemangiomas, the author presents his own method of treatment by intratumoral ligation. He describes the technical details by which interception of the blood supply to the haemangioma is achieved and also breakdown of the angiomatous mass into segments by the occlusion of vascular channels, thus completely interrupting the intratumoral blood flow. Obstruction of vascular lumina, endothelial atrophy, blood clot organization in the small diverticula between them and also subsequent fibrous hyperplasia which take the place of the vascular hyperplasia ensue. The method was used in 31 cases of cavernous haemangioma in different sites; the results, with follow-up periods of 1-8 years prove its efficacy. PMID- 3860593 TI - The importance of consistency in the classification of malignant tumours, illustrated by oral cancer material. AB - To evaluate the best treatment for the cancer patient, comparisons are often made between groups who have received different therapy. Such studies may be carried out within one hospital, but results from several hospitals may also be compared. It is therefore of the utmost importance that the groups/materials are selected according to the same criteria and classified and analysed by the same system and methods respectively. To illustrate this point, 125 cases of oral squamous cell carcinoma were classified according to two different systems, i.e. TNM 1973 and TNM 1978, but otherwise the material was similarly analyzed. The survival curves for stage I, II, III and IV78 were quite different from the corresponding curves of the 1973 system. The universal use of a simple, consistent classification system is recommended, and the effort to develop and improve the TNM system should continue. PMID- 3860594 TI - Osteosarcoma of the jaw bones. Analysis of 18 cases. AB - A series of 18 jaw osteosarcomas is reviewed. The ages of the 11 males and 7 females ranged from 11 to 65 years with a mean age of 37.4 years. The maxilla was involved in 10 cases whereas the mandible was the site of disease in 8 patients. A widened periodontal space was an invariably present radiological feature in those patients in whom the tumour involved the tooth-bearing area of the jaw. Treatment consisted of radical surgery with incidental radiotherapy or chemotherapy as adjuvant therapy. The local recurrence rate was 36% whereas the rate of metastasis was 40%. A five year survival time free of disease was shown by 47%. Prognosis was found to be adversely influenced by a high age and a high grade of histological malignancy as determined by counting mitoses. Features that distinguish jaw osteosarcoma from tumours elsewhere in the skeleton are a higher mean age of occurrence, a lower rate of metastasis, a longer period of time before clinical manifestation of metastasis and a more favourable prognosis. Factors that could be responsible for this variation in behaviour are discussed. PMID- 3860595 TI - Stafne's mandibular lingual cortical defect. Discussion of aetiology. AB - The literature relevant to Stafne's mandibular lingual cortical defect is reviewed. Four case descriptions are added. Aetiological theories are discussed and an alternative hypothesis of circumscribed, localized bone atrophy due to relative ischaemia is proposed. PMID- 3860596 TI - Timing of palatal closure. AB - Three articles on the influence of timing of palatal closure on jaw development, ENT condition and speech are subjected to an overall evaluation. A number of questions are formulated, which are still to be answered before a well-founded decision on the timing of palatal surgery can be taken. The evidence presently available made the author conclude that the whole palate should be closed before the age of 18 months, at least if the development of speech has priority over development of the maxilla. PMID- 3860597 TI - The relation between cleavage lines and postoperative scars after repair of cleft lip. AB - The "rotation-advancement method" was used for primary repair of the incomplete cleft lip in six infants. The skin cleavage lines were visualized using the tissue ablated in the operation. On examining the relation between the post cheiloplasty scar formation and the direction of the cleavage lines, the scar remained less conspicuous where the incisions parallelled the cleavage lines but grew hypertrophic where the incisions crossed the cleavage lines. PMID- 3860598 TI - The TMJ dysfunction syndrome before and after sagittal split osteotomy of the rami. AB - 280 patients with different types of mandibular deformities (prognathism, retrognathia, open bite, asymmetry) had been operated on by sagittal split osteotomy of the rami. The patients, routinely checked preoperatively, were found to present subjective or objective TMJ dysfunction symptoms with an incidence of 40.8%. After surgery the incidence of such symptoms in the same patients was 11.1%. The patients with no TMJ dysfunction symptoms preoperatively, presented such symptoms with an incidence of 3.7% postoperatively, a percentage very low in comparison with other statistics. PMID- 3860599 TI - Non-union of fractures of the mandible. AB - Non-union of the mandible was evaluated over a twenty one year period (1960 1980). Seven cases were found in a total of 853 examples--an incidence of 0.8 percent. In this paper we examine these cases and review the literature concerning its incidence. Thereafter we present the different types of treatment and the results these produce in the management of non-union. PMID- 3860600 TI - [3H]Prostaglandin accumulation in vitro by baboon uterus. AB - Uteri from mature baboons at various stages of the menstrual cycle were collected at autopsy. Transverse slices of the uteri were incubated with [3H]prostaglandins in Tyrode's buffer. Bound and free ligands were separated by filtration. Prostaglandin (PG) accumulation by the tissue slices was evaluated as a function of incubation time, PG type and concentration, temperature, wet weight of tissue and stage of the menstrual cycle. There was no significant difference in PG accumulation in response to PG type (PGE2 or PGF2 alpha) or stage of the menstrual cycle. These results from baboon uteri were compared with those using baboon oviducts and also rabbit uteri and oviducts. Unlike the rabbit tissues, the baboon oviducts and uterine tissues did not exhibit specific net accumulation of prostaglandins. PMID- 3860601 TI - VLDL apolipoprotein B determination in blood serum following precipitation of LDL with polyvinylsulphate. AB - A method is described for the determination of VLDL apolipoprotein B by radial immunodiffusion (RID) in serum supernatants following precipitation of LDL with polyvinylsulphate. The measurement of VLDL apolipoprotein B is based on the incubation of the polyvinylsulphate supernatant with triglyceride lipase (330 kU/l end concentration) for 12-24 hours at 37 degrees C. A good measure of agreement was found for the corresponding VLDL apolipoprotein B values measured by RID in the polyvinylsulphate supernatants (y) and VLDL apolipoprotein B values calculated as tetramethylurea-insoluble protein in the d less than 1.006 kg/l serum fraction (x) (r = 0.88, y = 0.96x + 0.004, n = 54). Within the tested range of 1.2 mmol/l to 6.7 mmol/l triglycerides, the concentration of apolipoprotein B measured in the polyvinylsulphate supernatant showed a linear relationship. Correlation analysis of VLDL apolipoprotein B values and serum triglycerides and VLDL cholesterol, respectively, showed a good correlation (r = 0.77 and r = 0.75, respectively, n = 54). In the determination of VLDL apolipoprotein B measured in polyvinylsulphate supernatant, a variation coefficient of 4.3% (means = 10.1 mmol/l, n = 20) was found in relation to the precision in the series, and a variation coefficient of 11.4% (means = 5.3 mmol/l, n = 15) in relation to day to day precision. PMID- 3860602 TI - [A seroepidemiological study on Toxoplasma gondii infection among pregnant women and neonates in Taiwan]. PMID- 3860603 TI - [Ultrastructural study of type II alveolar cell response to acute lung injury]. PMID- 3860604 TI - Studies on platelet aggregation in primary IgA glomerulonephritis. PMID- 3860605 TI - Effect of branched chain amino acid-enriched amino acid solution on normalization of plasma amino acids in hepatic encephalopathy. PMID- 3860606 TI - Studies of platelet hyperactivity in patients with ischemic cerebrovascular diseases. I. Changes of platelet aggregation--emphasis on hypoaggregation in vitro secondary to hyperactivation in vivo. PMID- 3860607 TI - Accuracy of first-pass regional ejection fraction image and paradox image in detecting left ventricular aneurysm. PMID- 3860608 TI - [The role of adrenal scintigraphy in the localization of hypertension of adrenal origin--a comparison with CT]. PMID- 3860609 TI - [Psychiatric disorders in hospitalized cancer patients--a study of 135 referrals with matched controls]. PMID- 3860611 TI - An appraisal of different surgical techniques in the treatment of carotid cavernous fistula. PMID- 3860610 TI - [56 cases of acute cholecystitis--special reference to the aged]. PMID- 3860612 TI - [A clinical study of psychosomatic cutaneous diseases]. PMID- 3860613 TI - Neuroblastoma in children--an analysis of 32 patients. PMID- 3860614 TI - [An unusual adenomatoid odontogenic tumor in the mandible resembling a cyst--a case report]. PMID- 3860615 TI - [Determination of ergotamine in flour by high performance liquid chromatography]. PMID- 3860616 TI - [A study on antithrombin III in nephrotics]. PMID- 3860617 TI - [A comparative study of carteolol and propranolol on exercise performance in patients with chronic stable angina pectoris]. PMID- 3860618 TI - Studies of platelet hyperactivity in patients with ischemic cerebrovascular diseases. II. Circulating platelet aggregates following cerebral stroke. PMID- 3860619 TI - [An electro-oculographic study of oculomotor abnormalities in Parkinson's disease]. PMID- 3860620 TI - The result of the treatment of thyroid cancer. A retrospective study. PMID- 3860621 TI - Venous bypass surgery for chronic deep venous thrombosis. PMID- 3860622 TI - [Crimes of violence by mentally disordered offenders]. PMID- 3860623 TI - [End results of Pridie operation for arthritic knees]. PMID- 3860624 TI - [Fine needle aspiration biopsy of orbital tumors]. PMID- 3860625 TI - Genetic analysis in Streptomyces chrysomallus. AB - A circular linkage map was developed for Streptomyces chrysomallus, a producer of actinomycin C. The map order of various marker loci was deduced from matings and to a minor extent from protoplast fusions. The map strongly resembles that of Streptomyces coelicolor A3(2). The recombination frequencies were low and highly variable (from 10(-9) to 5 X 10(-6]. Plasmid pIJ303 expressed its thiostrepton resistance gene in S. chrysomallus but did not promote chromosomal transfer or induce the Ltz+ phenotype. The data provide a background of genetics for investigations of antibiotic synthesis in this strain. PMID- 3860626 TI - Ia antigens and Fc receptors of mouse peritoneal macrophages as determinants of susceptibility to lactic dehydrogenase virus. AB - The relationship between susceptibility of mouse peritoneal macrophages to lactic dehydrogenase-elevating virus (LDV) infection and expression of I region-coded antigens (Ia) on these cells was investigated. The proportion of Ia-positive cells in resident peritoneal macrophages from adult and suckling mice were 4 to 10% and 50 to 70% respectively. Approximately the same percentage of the cells were susceptible to LDV, as detected by fluorescent antibody staining. In adult mice, double-labelling experiments showed that most of the Ia-positive cells were LDV-infected. When the cells were cultured for more than 24 h in vitro, Ia positive cells rapidly disappeared and the culture became resistant to LDV. Removal of Ia-positive cells by treatment with anti-Ia plus complement or enrichment using an anti-Ia-coated Petri dish simultaneously removed or enriched for LDV-susceptible cells. Treatment of cells with trypsin (1 mg/ml) removed their I-A and I-E antigens and simultaneously abolished susceptibility for LDV. When LDV was preincubated with subneutralizing amounts of antibody, infectivity for macrophages was enhanced and the proportion of LDV-infected cells was higher than that of Ia-positive cells. This suggests that Fc receptors on macrophages can act as receptors for LDV coated with antiviral IgG. PMID- 3860627 TI - [Prenatal diagnosis in a familial form of male pseudohermaphroditism due to 17 keto reductase deficiency]. AB - In an infant considered at birth as a female but with easily palpable gonads in the labia major, the XY karyotype and the endocrine studies (determination of plasma levels of steroid hormones under basal conditions and during hCG stimulation) were consistent with the diagnosis of male pseudohermaphroditism due to 17-keto reductase deficiency. During the second pregnancy an amniocentesis revealed a 46 XY karyotype. Endocrine studies performed on the amniotic fluid at midgestation suggested that the fetus was affected by the same enzyme defect. After birth, the diagnosis was demonstrated with anatomical an endocrine studies. PMID- 3860628 TI - Eye-blink rate in Tourette's syndrome. AB - Gilles de la Tourette's syndrome is a hyperkinetic movement disorder in which an etiological role for dopaminergic hyperactivity has been proposed. Blink rate, a putative correlate of central dopamine activity, is commonly held to be elevated in Tourette's syndrome, a finding that would be consistent with the "dopamine" hypothesis of this disorder. In 19 patients who had Tourette's syndrome, however, blink rates during placebo treatment were identical with those of 49 index controls during reading and quiet sitting. Blink rate did correlate, however, with both the number and severity of tics. Pimozide treatment did not reduce blinking in the patients. It should be noted that nine of the patients were adolescents for whom there were not adequate age-matched controls, a fact which could obscure a blink rate elevation in this group. Insofar as blink rate is a putative correlate of central dopamine activity, these results are not consistent with elevated brain dopamine activity in adult patients who have Tourette's syndrome. PMID- 3860630 TI - Long-term survival in adult acute lymphoblastic leukemia: follow-up of a Southeastern Cancer Study Group trial. AB - Current observation was obtained for adults treated on a protocol for acute lymphoblastic leukemia, which was open from 1972 to 1978, in order to determine the long-term outcome and to evaluate potential prognostic factors. Long-term survival (five + years) was seen in 32% (25/79) of patients who achieved complete remission; 16/79 remain in first remission and 2/79 are currently in second remission. Young age (less than 40) and female sex were significant prognostic factors for long-term survival, but the basis for this advantage is unclear. Further improvements in chemotherapy are needed. PMID- 3860629 TI - Sequential high-dose cytosine arabinoside-asparaginase treatment in advanced childhood leukemia. AB - Sequential high-dose cytosine arabinoside (ara-C) and asparaginase were given to 41 children age six months to 21 years of age with advanced leukemia. Ten of 22 patients with acute lymphocytic leukemia (ALL) and eight of 19 patients with acute nonlymphocytic leukemia (ANLL) obtained complete remissions. The most significant toxicity seen was infection in 22 patients. In addition, patients given intrathecal chemotherapy within 24 hours of ara-C developed neurologic toxicity. The high response rate seen in these patients with advanced leukemia indicates that a trial of this regimen is warranted in children with less advanced ALL and ANLL. PMID- 3860631 TI - Invasive pulmonary aspergillosis in adult acute leukemia: clinical clues to its diagnosis. AB - Invasive pulmonary aspergillosis, a leading cause of morbidity and mortality in patients with acute leukemia, is difficult to diagnose antemortem because its signs and symptoms are ill-defined. To refine the clinical description of this infection, we reviewed our experience with 15 pathologically documented cases of invasive pulmonary aspergillosis in a population of 60 patients treated for acute leukemia. Findings occurring significantly more often (P less than or equal to .001) among cases than controls included pleuritic chest pain; acute sinus tenderness, and nasal discharge, epistaxis and eschar; rales; development of multilobar infiltrates after the 14th hospital day; and presence of nodular or cavitary infiltrates. In addition, patients with invasive pulmonary aspergillosis had a significantly prolonged duration of granulocytopenia, more febrile days and febrile episodes without a fever diagnosis and more febrile days on antibiotics (P less than or equal to .001 in all). This complex of findings should improve the clinician's ability to diagnose invasive pulmonary aspergillosis in patients with acute leukemia. PMID- 3860632 TI - The importance of replication of clinical nursing research. PMID- 3860633 TI - Correlational study: nurses' subjective perceptions of depression and objective ratings. PMID- 3860634 TI - Validity and reliability of the hypertensive adult assessment guide. PMID- 3860635 TI - The genetic distance between the coagulation factor IX gene and the locus for the fragile X syndrome: clinical implications. AB - In 3 families with the fragile-X [fra(X)] syndrome, we have identified a minimum of 4 recombinations in 9 meioses between the syndrome locus and the coagulation Factor IX gene. Two Factor IX intragenic restriction fragment length polymorphisms (RFLPs), produced with TaqI and XmnI, were used as markers. In lod score calculations, incomplete penetrance of the fra(X) mutation in males and females was taken into account by the computer program LIPED. The cumulative maximum lod score calculated from these data and from data previously reported was 2.75 at a recombination frequency of 20% (theta = 0.20). This indicates that the genetic distance between the Factor IX gene and the fra(X) locus is too great for Factor IX probes to be used alone for carrier detection in the fra(X) syndrome. Additional polymorphic loci more tightly linked to the fra(X) syndrome locus are required. PMID- 3860636 TI - Myopathy in debrancher enzyme deficiency. PMID- 3860637 TI - Studies of a family manifesting premature exfoliation of deciduous teeth. AB - We report observations made on a family in which the children manifested premature exfoliation of the deciduous incisors and canines beginning as early as 1.5 years of age. We observed gingival recession, alveolar bone resorption, tooth loosening and exfoliation without apical root resorption in the absence of clinical signs of inflammation. The children's mother, age 26, had a normal periodontium, but the father, age 30, had periodontitis of moderate severity. Exfoliated deciduous teeth from one of the children were examined histologically and features characteristic for hypophosphatasia were seen. However, localized prepubertal periodontitis could not be ruled out from these data alone. The differential diagnoses for this type of condition are discussed. PMID- 3860638 TI - An unusual presentation of metastatic carcinoma involving the periodontium. AB - A case of metastatic nasopharyngeal carcinoma involving the mandibular periodontium of a 36-year-old female is presented. The diffuse gingival enlargement from premolar to premolar was quite unusual, and other conditions were considered in the clinical differential diagnosis. Histopathologic evaluation of the gingival lesion showed a poorly differentiated carcinoma which appeared morphologically similar to earlier metastatic lesions of the nasal fossa and brain. PMID- 3860639 TI - Inhibition of 5 beta-dihydrocortisone reduction in rat liver cytosol: a rapid spectrophotometric screen for nonsteroidal anti-inflammatory drug potency. AB - The purified NAD(P)-linked 3 alpha-hydroxysteroid dehydrogenase of rat liver cytosol is powerfully inhibited by the nonsteroidal anti-inflammatory drugs in rank-order of their therapeutic potency. This observation has now been developed into a rapid screen for predicting the potency of these agents. The screening method requires the preparation of a rat liver cytosol and access to a recording spectrophotometer. By monitoring the NADPH-linked reduction of 5 beta dihydrocortisone catalyzed by these cytosols in the presence of nonsteroidal anti inflammatory drugs, a high correlation between their log IC50 values for this reaction with their recommended daily dose in humans can be obtained (r = 0.960; n = 10; p greater than 0.0001). This correlation scans four orders of magnitude and demonstrates the value of this method for screening the potency of these drugs. This method is superior to traditional predictive methods (e.g., measurement of cyclooxygenase inhibition), since this assay measures the change in absorbance of a pyridine nucleotide over 5 min and is considerably more rapid than the extraction, separation, and quantitation of prostaglandins. The method does not require enzyme purification, and the cytosol, which can be prepared in a matter of hours, can be stored at -80 degrees C and used routinely for screening purposes. PMID- 3860640 TI - Endomyocardial biopsy in pediatric oncology: implications for nursing. PMID- 3860641 TI - Anthracycline cardiomyopathy: pathophysiology and case reports. PMID- 3860642 TI - Influence of mediators of anaphylaxis on collateral ventilation and the lung periphery of the dog. AB - The relative activities of three bronchoconstrictive mediators of anaphylaxis, prostaglandin (PG) D2, PGF2 alpha and histamine, were investigated in anesthetized dogs using two different measures of peripheral lung reactivity: resistance to flow through collateral airways (Rcoll) and dynamic lung compliance (Cdyn). In the collateral system, the three agonists exhibited approximately 3 fold differences in their relative activities when administered by rapid injection into the superior vena cava, with PGD2 greater than PGF2 alpha greater than histamine. PGD2 was approximately three times more active than PGF2 alpha in reducing Cdyn, whereas responses to PGF2 alpha and histamine were equivalent. These relationships were unchanged in vagotomized animals. Pretreatment with atropine (1 mg/kg) significantly attenuated changes in Rcoll, but had only small and inconsistent effects on changes in Cdyn. Although the time to initial response in both measures of peripheral airways reactivity was similar, the time to maximal response in Rcoll was approximately twice that of Cdyn. In lung parenchymal strips, the rank order of contractile activity of the three mediators was opposite that observed in the peripheral airways in vivo. These data demonstrate that airflow through the collateral system can be modulated by mediators of anaphylaxis in the pulmonary circulation and suggest that such mediators may influence ventilation/perfusion relationships in the lung periphery through their differential effects on peripheral airways and other parenchymal contractile elements. The present study also indicates that the determinants of flow through the collateral system exhibit certain basic pharmacologic and physiologic differences from those of Cdyn and suggests that these two measures of peripheral airways reactivity are not equivalent. PMID- 3860644 TI - The "slush" technique in construction of intranasal stents. PMID- 3860643 TI - Use of intraoral prostheses in external beam radiation of oral and perioral cancer. AB - An intraoral prosthesis can be used to position and immobilize tissues in beam directed radiation therapy for cancer. The prosthesis stabilizes oral structures within the treatment field to permit improve control of field size and thus spare tissues that do not require treatment. The use of an oral prosthesis diminishes both early and late complications of radiation treatment. The prostheses can be used to advantage in conjunction with free-hand and precision methods for the orientation of patients. PMID- 3860645 TI - Management of patients with acute temporomandibular joint disorders. PMID- 3860646 TI - Relationships between jaw pain and jaw muscle contraction level: underlying factors and treatment effectiveness. AB - EMG representations of jaw muscle contraction levels were measured in dental patients with TMJ problems in addition to history and physical evidence of bruxing and clenching, TMJ problems alone, bruxing and clenching, and no pain. Patients with TMJ problems plus bruxing/clenching had EMG levels similar to those with clenching and bruxing problems alone. These levels were far higher than those in the groups with similarly low TMJ problems alone and with no pain. The pain groups were normal for anxiety level and life stress. Although a third of the patients produced a conversion V pattern on the MMPI, no effect was seen on treatment effectiveness. All but a few of the mixed TMJ problem/bruxism/clenching patients and of the bruxism/clenching patients showed considerable reduction in pain through use of treatment oriented toward muscle tension awareness and relaxation. The group with TMJ problems and normal masseter muscle tension made little progress. PMID- 3860647 TI - Working condylar movement and its effects on posterior occlusal morphology. AB - The movement of the mesiolingual cusp of the maxillary left first molar was studied in the frontal and horizontal planes. The movement was studied while varying the top wall, rear wall, and incisal guidance on the articulator. It can be concluded that the top wall inclination may significantly influence movement of the mesisolingual cusp of the maxillary first molar during working mandibular movement, the rear wall inclination has less influence than top wall inclination on cusp movement during a working mandibular movement, and the working side condylar movement should be considered when evaluating or restoring the dentition. PMID- 3860648 TI - Thickness and marking characteristics of occlusal registration strips. PMID- 3860649 TI - Quantization of nickel and beryllium leakage from base metal casting alloys. PMID- 3860650 TI - Technique for cementation of provisional restorations. AB - A technique for cementation of a provisional resin splint or crown has been presented. The splint is lubricated with silicone grease and cemented with a noneugenol cement mixed with antibiotic ointment. The grease aids in the complete removal of the cement. The use of a sterile composite resin syringe and preloaded disposable tip allows delivery of the grease to the splint with minimal chance of bacterial cross contamination to the patient. PMID- 3860651 TI - Evaluation of a new epoxy resin die material. PMID- 3860652 TI - Analysis of the lateral condylar adjustment of nonarcon semiadjustable articulators. AB - An analysis of the lateral condylar inclination adjustment of the slot-track semiadjustable articulator was performed by using a fully adjustable articulator as a simulated patient. Pantographic tracings were made and transferred to the semiadjustable articulator. The lateral condylar inclination of the articulator was then rotated to allow it to follow the pantographic tracings as closely as possible. The results indicate that the Hanau formula or an arbitrary setting of 15 to 20 degrees does not provide the most accurate articulator setting possible. PMID- 3860653 TI - Bite force discrimination by individuals with complete dentures. AB - The purpose of this study was to determine whether differences existed in interincisor bite force discrimination between a group of subjects wearing complete dentures and a group of dentate individuals. It was hypothesized that biting force is monitored at least in part by the sensory mechanism within the PDL and that the absence of the PDL would result in reduced bite force discrimination. A specially designed strain gauge scale was constructed for the measurement of bite force. Bite force discrimination was assessed at three different standards including 500, 1000, and 3000 gm. Data analysis revealed that, overall, bite force discrimination was not significantly different for the two groups. However, at the lightest standard of 500 gm, the dentate group performed significantly better (p less than .05) than the denture wearers. It is concluded that the sensory system within the PDL plays a role in monitoring bite force discrimination. PMID- 3860654 TI - Freedom of choice for restorative dentistry with or without anesthesia. PMID- 3860655 TI - Technique for constructing custom thumb-chewing guards. PMID- 3860656 TI - Evaluation of condylar position from temporomandibular joint radiographs. PMID- 3860657 TI - Quality assessment of amalgam and inlay restorations on posterior teeth: a retrospective study. AB - This study was designed to assess and compare the quality of posterior proximo occlusal amalgam and inlay restorations relative to type of restoration (material, surfaces involved, and cusp protection) and length of service of the restorations. A clinical evaluation system based on operationally defined and clinically important criteria was used. Clinically and statistically significant differences were found between overall ratings for amalgam and inlay restorations and between small (two-surface) amalgam and inlay restorations, as well as between larger (three-surface) amalgam and inlay restorations. In all cases, inlay restorations were of higher quality. A not acceptable rating for marginal integrity was the most frequent reason for not acceptable overall ratings. There was no difference in satisfactory/not acceptable ratings for inlay restorations with or without protected cusps (p = .95). PMID- 3860658 TI - Bacteriologic study of a basic fuchsin caries-disclosing dye. PMID- 3860659 TI - Structural effects of bleaching on tetracycline-stained vital rat teeth. PMID- 3860660 TI - Denture plaque control and inflammation in the edentulous patient. AB - The relationship between denture base plaque and mucosal inflammation under complete dentures was tested by clinical comparison with the PTI and a comparable plaque-scoring technique. Two treatment groups, one of which practiced tissue brushing only and the other denture-brushing only, were compared with a control group with regard to mucosal inflammation and denture plaque score. Significant reduction in inflammation occurred, although no reduction in denture base plaque score was found. The effect of denture plaque on denture stomatitis and the efficacy of denture-brushing as a plaque removal technique is challenged. PMID- 3860661 TI - Assessing effective obturation. AB - The use of lung function tests and sequential radiography appear to be suitable complementary methods of contrasting the effectiveness of obturator prostheses provided in the management of maxillectomy patients. The creation of an oral seal, demonstrable by normal subjects during swallowing and in the production of certain speech sounds, appears to be unobtainable in the management of maxillectomy. Effective obturation produces sufficient separation of the oral cavity from the nasal cavity to permit efficient swallowing and intelligible speech. These two methods also offer simple means to evaluate subjective experiences of the patient. PMID- 3860662 TI - Modification of surgical obturators to interim prostheses. PMID- 3860663 TI - Modified stock-eye ocular prosthesis. AB - A technique for the use of modified prefabricated eyes was described. When properly used, many of the limitations attributed to prefabricated eyes can be overcome. This technique allows the proper positioning of the iris while simultaneously recording an impression of the ocular defect tissue bed. This technique permits the finished ocular prosthesis to generate an equal distribution of pressure throughout the defect, while increasing its movement due to excellent adaptation to the walls of the socket. Although a custom-eye technique may still be necessary for some, most patients can be treated with the modified prefabricated-eye technique with excellent results. PMID- 3860664 TI - Hollow obturator with removable lid. AB - Hollowing the obturator reduces the weight of the prosthesis. Closed and open hollow obturator prosthesis each have their particular benefits. However, the obturator with a removable lid has its benefits also, and the advantages have been described. PMID- 3860665 TI - Studying reports of women medical students on their eating disorders. PMID- 3860666 TI - [The clinical significance of CA125 in patients with gynecological tumors--a comparative study on CA125 and other tumor markers]. AB - Serum CA125 levels were measured by radioimmunoassay patients with various gynecological tumors. Elevated levels of CA125 were detected in the serum of patients with malignant ovarian tumors. Among patients with uterine tumors, CA125 levels were elevated in those with malignant uterine tumors, but not with uterine myomas. The correlations between tumor markers (CA125, IAP, ferritin, PTA) and malignant ovarian tumors were measured, and only CA125 levels were found to correlate with progression or regression of the disease in patients with malignant ovarian tumors. These results suggest that CA125 may be a useful marker for monitoring the response to treatment in patients with malignant ovarian tumors. PMID- 3860667 TI - [Flow cytometric dual-parameter analysis of human leukemic cells using monoclonal anti-BrdUrd antibody]. AB - A more precise analysis of cell kinetics can be made the simultaneous flow cytometric measurement of cellular DNA content and amount of incorporated BrdUrd, using propidium iodide and a monoclonal antibody to BrdUrd. We applied this technique to the cell kinetic analysis of leukemic cells obtained from a 62-year old woman with AML. A computer analysis of a DNA distribution histogram provided the percentage of cells in each phase of the cell cycle, i.e., G1: 73.3%, S: 19.6%, and G2M: 7.1%. In contrast, 12.7% of the total cell population incorporated BrdUrd, but more active DNA synthesizing cells comprised only 3%. Some fractions of cells that have DNA content corresponding to that of S phase cells incorporated little BrdUrd. Most of the S phase cells were in the early or late S phase, and their DNA synthesis rate was very low. PMID- 3860668 TI - [Treatment of acute myelogenous leukemia with concurrent administration of N4 behenoyl-ara-C, aclacinomycin A, 6-mercaptopurine and prednisolone]. PMID- 3860669 TI - [Gas producing cellulitis in a case with acute lymphoblastic leukemia]. PMID- 3860670 TI - [Acute leukemia with different cytochemical findings in bone marrow and lymph node]. PMID- 3860671 TI - [A case of acute myelocytic leukemia complicated with intracerebral leukemic tumor]. PMID- 3860672 TI - [Acute lymphocytic leukemia, complicated with generalized cryptococcosis successfully treated by amphotericin B; a case report]. PMID- 3860673 TI - [An autopsy case of chronic myelomonocytic leukemia after a long-term follow-up]. PMID- 3860674 TI - [Candidiasis of the liver in two patients with acute promyelocytic leukemia during initial remission induction]. PMID- 3860675 TI - [T1 value of hyperplastic and hypoplastic bone marrow--preliminary report]. PMID- 3860676 TI - [A study on normal 67Ga distribution pattern on early 67Ga scintigraphy]. PMID- 3860677 TI - Determination and significance of a new carbohydrate antigen CA19-9 in digestive system cancers. AB - To assess the diagnostic significance of CA19-9, the serum levels in 225 healthy subjects, 201 patients with cancers, 423 patients with benign diseases and 21 pregnant women, were determined by RIA. The mean CA19-9 level of the healthy subjects was 11.2 +/- 0.4 U/ml (range, 6-100 U/ml). Only 3.1% of them were above 37 U/ml. The CA19-9 levels were elevated above 37 U/ml in 7.9% of 293 patients with non-carcinomatous diseases of the digestive system. Among digestive system cancers, elevated levels were found in 18.2% of 11 patients with esophageal cancer, 42.7% of 68 patients with gastric cancer, 39.1% of 23 patients with colorectal cancer, 27.8% of 18 patients with primary hepatic cancer, 71.4% of 35 patients with biliary cancer, and 75% of 20 patients with pancreatic cancer. Most of the patients with levels above 100 U/ml had carcinomatous diseases. The CA19-9 positive rates for patients with gastric cancer and colorectal cancer were extremely low at stages I, II and III, while in patients at stage IV and in patients with recurrent cancer, a tendency for rapid increase in the positive rates and concentrations of CA19-9 was noted. Based on combination assay of CA19 9, CEA and ferritin, in comparison with the positive rates for CA19-9 alone, it was found that the rates were raised to 42.7% in gastric cancer, to 39.1% in colorectal cancer, and to 71.4% in biliary cancer, suggesting the simultaneous determination with these tumor markers may serve to elevate their usefulness. PMID- 3860678 TI - Application of a job-exposure matrix to a case-control study of lung cancer. AB - Interview information was obtained on primary and secondary occupations for 261 male lung cancer patients and 444 controls residing on the island of Oahu, HI. With the use of a computerized job-exposure matrix (JEM), exposure levels were assigned to each subject for each of 5 known and 2 likely lung carcinogens. A multiple logistic regression model was used to compute the odds ratio (OR) for exposure to each carcinogen, adjusted for age, ethnicity, and pack-years of smoking. On the basis of the criterion of either a dose-response effect or a statistically significant OR (P less than .05) or both, 5 of the 7 carcinogens (4 of the 5 known carcinogens) were found to be associated with lung cancer risk. However, on the basis of the single criterion of a significant OR, only 3 of the 7 carcinogens (2 of the 5 known carcinogens) were associated with lung cancer risk. Due to its relative insensitivity, this JEM may have limited usefulness in the identification of exposure-disease relationships and should not be applied uncritically. PMID- 3860679 TI - Multiple cancer--an epidemiologic exercise in Finland. AB - The material of the Finnish Cancer Registry from 1953-79 (279,745 cancer patients, 774,518 person-yr at risk) was analyzed for the occurrence of multiple cancer. There were 5,871 new primary cancers in the series (excluding the first 12 mo from diagnosis of the first cancer). A positive association between cancers with similar etiology could be demonstrated, e.g., between cancers of the lip, larynx, and lung (smoking) and between cancers of the breast and endometrium (hormones, reproductive history). Clustering of different risk factors resulted, e.g., in an excess risk of colon cancer among female breast cancer patients (risk factors in both cancers are prevalent particularly in higher-social classes). Differences in the distribution of the risk factors resulted in risk deficits, e.g., low relative risk of lung cancer among male colon cancer patients (the prevalence of smoking was highest in the lower-social classes and the prevalence of risk factors in colon cancer was highest in the higher-social classes). The risk of leukemia was increased among patients with cancers of the breast, endometrium, and thyroid (possibly due to irradiation). There was a high relative risk of salivary gland cancer among patients with skin cancer other than melanoma or basal cell carcinoma in both sexes. The relative risk of a new primary cancer decreased with increasing age at diagnosis of the first cancer. The length of follow-up was positively associated with the relative risk of many cancers, although this finding was not as consistent as that with age. PMID- 3860680 TI - Direct analysis of differentiation proteins in normal and leukemic human granulocytes by high-performance liquid chromatography. AB - The feasibility of the use of reverse-phase high-performance liquid chromatography (RP-HPLC) for detecting differences in the protein phenotypes of highly purified fractions of normal and chronic myelogenous leukemic (CML) mature granulocytes isolated from peripheral blood was determined. At least 21 protein peaks were consistently and reproducibly detected in the RP-HPLC profiles of acetonitrile-trifluoroacetic acid extracts of normal granulocytes. This assay takes only 60 minutes to perform and can be done on 4 X 10(6) granulocytes (approximately the number of granulocytes in 1 ml normal blood). Furthermore, sodium dodecyl sulfate-gel electrophoresis of the RP-HPLC fractions provides a second dimension to the analysis of the polypeptide pattern of these cell lysates. Analyses of subcellular fractions by these methods revealed that most of the major peaks in the RP-HPLC profiles of intact granulocytes originate mainly from the granule and membrane fractions. Although the protein phenotypes of mature granulocytes were remarkably uniform among normal individuals, those of mature granulocytes obtained from the blood of CML patients were consistently abnormal and varied considerably among individual patients. The results indicate that the approach used here could have useful application in the study of abnormal granulocyte differentiation in leukemia. PMID- 3860681 TI - Long-term-cultured colon epithelial cell lines from individuals with and without colon cancer genotypes. AB - In 1982 the characteristics of the first epithelial line established from normal human colon mucosa were reported. The purpose of this report is to describe 5 additional lines established from individuals with and without genotypes associated with genetic predisposition for colon cancer [1 familial polyposis coli (FPC) patient, 1 hereditary nonpolyposis colon cancer (HNPCC) patient, 2 clinically normal individuals (each at risk for one of these autosomal dominant syndromes), and 1 clinically normal individual without any family history of cancer]. The cultured cell lines had the morphologic features associated with epithelium as previously described in the 1982 report. The cell lines derived from genetically (FPC or HNPCC) predisposed individuals had three distinctive characteristics as compared to those derived from individuals without a family history of colon cancer: 1) a higher saturation density (P less than .01); 2) increased in vitro tetraploidy, an in vitro biomarker associated with genetic predisposition for colon cancer; and 3) a higher concentration of carcinoembryonic antigens (CEA) in their conditioned culture medium (P less than .01). Lines derived from normal individuals at risk for the same syndromes were found to have an increased risk status on the first two characteristics. However, the level of CEA did not increase in their culture media, which suggested that the increase in CEA was related to mucosal changes occurring in the preneoplastic sequence in colon cancer. PMID- 3860682 TI - Screening geographic areas for unusual survival experience or stage at diagnosis with application to breast and colon cancer. AB - An approach was devised for the problem of detecting geographic areas with poor survival for cancer patients. Methods were proposed to deal with the two major sources of variability in summary survival measures for geographic areas: the distribution of prognostic factors for individuals within an area and random variation. In addition, small geographic areas often had to be combined so that a sufficient number of cases could be obtained in each area for calculation of survival statistics, and a procedure for doing so was developed. Then stage specific and overall 5-year survival estimates for each geographic area were converted to standardized normal deviates so that outlying observations could be detected using the theory of normal-order statistics. A similar approach was used to determine which geographic areas had unusually high proportions of advanced disease at diagnosis. Our outlier detection procedure was designed for screening available data for geographic areas possibly deserving further study rather than for concluding that survival or staging was substandard in those areas. Methods were applied to data from the Surveillance, Epidemiology, and End Results (SEER) Program for breast and colon cancer. For each cancer site, some geographic areas were identified with unusual survival or stage distributions. PMID- 3860683 TI - Distribution of copper among components of human serum. AB - We examined the distribution of copper among four components of human serum separated by chromatography on Sephadex G-150 and Affi-gel blue. Analysis of copper by furnace atomic absorption indicated that normal adults have copper at an average of 600 ng/ml associated with ceruloplasmin; at 120 ng/ml with transcuprein, a new copper transport protein; at 150 ng/ml with albumin; and at 90 ng/ml with one to three components of low molecular weight (less than 30,000). Cancer patients had more total copper but similar proportions in the four serum fractions. In both groups, some individuals had very high levels of copper in transcuprein, albumin, and/or one or more components of the low-molecular-weight fraction. The results showed that, contrary to earlier conclusions, ceruloplasmin copper only comprised about 60% of the total in human serum; and not just ceruloplasmin but also other forms of serum copper may be elevated in cancer patients. PMID- 3860684 TI - Stimulatory and inhibitory activities of lung-conditioned medium on the growth of normal and neoplastic cells in vitro. AB - Lung-conditioned medium (LCM) was obtained by incubation of BALB/c mouse lung tissue fragments in serum-free Eagle medium for 48 hours and subsequent separation by dialysis or chromatography on a Sephadex G-75 column. LCM fractions were tested for their ability to modulate proliferation of normal human endothelial cells and neoplastic cells (N2a, MCF, HEp-2) in vitro as assessed by plating efficiency and tritiated thymidine incorporation assays. It was found that LCM contained two kinds of factors, either stimulating (molecular weight: 50,000-70,000) or inhibiting (molecular weight: 12,000-20,000 and 3,000-5,000) cell proliferation. PMID- 3860686 TI - Inhibition of B16-BL6 melanoma growth in mice by methionine-enkephalin. AB - The antitumor effect of methionine-enkephalin [( Met]enkephalin) was demonstrated in C57BL/6J mice inoculated with B16-BL6 melanoma cells. Local subcutaneous tumor growth was inhibited with a 50-micrograms dose daily for 7 or 14 days. The antitumor effect of [Met]enkephalin was inhibited by the administration of the opioid receptor antagonist naloxone. Naloxone alone had no significant effect on tumor growth. PMID- 3860685 TI - Susceptibility of mammary tumor cells to complement-mediated cytolysis after in vitro or in vivo fatty acid manipulation. AB - The susceptibility of line 168 murine mammary tumor cells to complement (C) mediated lysis was tested after in vitro treatment with several saturated or unsaturated fatty acids dissolved in different solvents or presented in the form of micelles to the cells. The lytic susceptibility of these cultured cells was compared with similar tumor cells obtained either from mice maintained on diets containing different concentrations and saturations of fatty acids or from cultures supplemented with serum from tumor-free control mice fed pair-matched diets. Although changes in dietary fat concentration and saturation resulted in alterations of the tumor cell fatty acid composition, those alterations did not influence the susceptibility of tumor cells to C-mediated lysis. However, single, or combinations of, unsaturated fatty acids dissolved in ethanol, unlike saturated fatty acids, reduced the lytic susceptibility of tumor cells in vitro. Hexane added to culture medium significantly suppressed the lytic susceptibility; however, when used as a carrier no significant differences were observed among treatments with the individual fatty acids at several concentrations. This result may be due to the effect of hexane on the cell membrane because this treatment also affected the osmotic fragility of the cells. Fatty acids as micelles did not influence the susceptibility of tumor cells to lysis. We concluded that only in vitro manipulation of fatty acids in some vehicles influenced the susceptibility of target tumor cells to C-mediated lysis; this finding did not parallel the situation that occurred in vivo. Moreover, the use of different vehicles to present fatty acids to tumor cells may further alter the susceptibility to C mediated lysis. PMID- 3860687 TI - Inhibition of human tumor cell-associated fibrinolysis by vascular bovine smooth muscle cells. AB - Fibrinolysis induced by human tumor cells producing either urokinase (u-PA) or tissue-type plasminogen activators (t-PA) was inhibited by growth in vitro of the tumor cells together with aortic bovine smooth muscle cells (SMC). Both types of plasminogen activators secreted by the tumor cells were partially or completely neutralized in such cocultivation experiments. The fibrinolysis inhibitory activities were found in living SMC, homogenates of the cells, and medium conditioned by the SMC. Incubation of medium conditioned by the SMC with media conditioned by the tumor cells followed by polyacrylamide gel electrophoresis and regular fibrin zymography resulted in sodium dodecyl sulfate-resistant inhibition of fibrinolysis. Gel electrophoretic analysis of medium conditioned by SMC followed by reverse fibrin autography revealed the presence of a single zone of lysis inhibition that corresponded to a relative molecular weight of 51,500 +/- 1,700. These results demonstrate that SMC produce and secrete a powerful inhibitor of u-PA- and t-PA-induced fibrinolysis, which may alter the invasive and degradative potential of tumor cells. PMID- 3860688 TI - Collagen-production inhibitors evaluated as antitumor agents. AB - Proline analogues such as cis-4-hydroxy-L-proline (CHP) and L-azetidine-2 carboxylic acid (A2C) were tested for their antitumor activity in tissue culture and in vivo. In culture, CHP specifically inhibited those tumor cells that synthesized basement-membrane collagen. CHP appeared to selectively inhibit collagen biosynthesis with only a slight effect on protein synthesis. Culturing cells on type IV collagen matrix did not alter the antiproliferative effect of CHP. The inhibition of 450.1 mouse mammary tumor cells was fully reversible when cultures were incubated for 6 or 12 hours with 25 micrograms CHP/ml but was irreversible after 24 hours of exposure. Of the proline analogues tested against 450.1 tumor cells, A2C and CHP were the most potent inhibitors of cell growth. These two compounds were therefore tested in vivo using 3 transplantable tumors, all of which synthesized basement-membrane collagen. CHP and A2C were given twice daily to mice for 7 to 10 days at doses ranging from 50 mg/kg (body wt) to 600 mg/kg (body wt) per injection. Both CHP and A2C were completely inactive against the 450.1 mammary tumor and the EHS sarcoma. Both compounds also caused considerable liver toxicity. Against CD8F1 mammary tumors, treatment with maximum tolerated doses of CHP and A2C resulted in a slight but insignificant inhibition of tumor growth. While our studies confirmed previous findings that CHP specifically inhibited those tumor cells that synthesized basement-membrane collagen, CHP and A2C did not appear to be efficacious antitumor agents. PMID- 3860689 TI - Incidence, morphology, and ultrastructure of spontaneous thymoma--the most common neoplasm in W/Nhg rats. AB - Spontaneous thymoma was observed with an incidence of 97 and 36% in female and male rats, respectively, from an inbred Wistar/Neuherberg strain (W/Nhg). The thymomas often caused dyspnea and were occasionally the direct cause of death. The neoplasms resembled human thymomas and showed a variable cell composition, ranging from mainly lymphocytic to mainly epithelial. The detailed ultrastructural findings are described and compared with those in other rat thymomas and in human thymomas. A characteristic feature of all dividing lymphocytes was the presence of often multilayered, confronting cisternae. As in more than 50% of human thymomas, W/Nhg rat thymomas were not associated with myopathies or any other possibly autoimmune diseases. They may thus offer a useful model for the study of thymoma without associated parathymic syndromes. PMID- 3860690 TI - Enhancement of hepatocarcinogenesis by sorbitan fatty acid ester, a liver pyruvate kinase activity-reducing substance. AB - Effect on hepatocarcinogenesis of dietary sorbitan fatty acid ester (SorFAE), which had been known to cause decrease in pyruvate kinase (PK) activity, was studied in rats fed a diet containing 0.06% 3'-methyl-4-dimethylaminoazobenzene (3'-Me-DAB) for 6 weeks. The incidence of hyperplastic nodules and/or hepatocellular carcinomas in the rats fed the 3'-Me-DAB diet alone was 45.0% at the end of 51 weeks, whereas the incidence in the rats fed 3'-Me-DAB diet followed by 5 or 10% SorFAE or 0.1% phenobarbital (PB) diet were 76.2, 90.5, and 95.0%, respectively. These incidences were significantly higher compared with the group fed 3'-Me-DAB diet alone (P less than .05). No tumors were observed in rats fed 10% SorFAE diet alone. The results show that SorFAE has an enhancing effect on hepatocarcinogenesis, although the effect was weak compared to that of the effective PB dose. The results seem to confirm our assumption that a chemical that causes decrease in PK activity in rat liver might promote hepatocarcinogenesis. PMID- 3860691 TI - A recessive mutation (ter) causing germ cell deficiency and a high incidence of congenital testicular teratomas in 129/Sv-ter mice. AB - The genetic basis of a germ cell deficiency, accompanied by a high incidence of testicular teratomas, was studied in strain 129/Sv-ter mice (formerly designated "129/terSv"). Germ cell deficiency became more severe with advancing age in males, and they were sterile whether or not they had bilateral teratomas. Germ cell-deficient testes were smaller than normal except when the testes had teratomas. In females the ovaries were smaller than normal, but the germ cell deficiency did not progress and most were fertile. The germ cell deficiency resulted from the homozygous state of a recessive mutant gene designated "teratoma (ter)." Matings between females with small ovaries and homozygous normal males produced no germ cell-deficient offspring. When F1 offspring with normal gonads were mated together, germ cell-deficient F2 animals appeared at a frequency close to 1 in 4. When females with small ovaries (ter/ter) were mated with heterozygous males (ter/+), half of the offspring were germ cell deficient. It was concluded that the genetic factor is a single recessive gene. The incidence of teratomas in +/+ strain 129/Sv-ter males was 1.4% (3/216), and all teratomas were unilateral. Seventeen percent (20/117) of heterozygous males had teratomas, of which 18 were unilateral and 2 were bilateral. Ninety-four percent (167/178) of homozygous ter/ter males had teratomas, of which 75% were bilateral. Introduction of the mutant gene ter onto the C57BL/6 genetic background resulted in germ cell deficiency in homozygotes, but it reduced considerably the teratoma incidence in ter/ter males. PMID- 3860692 TI - Preferred animal model in tobacco-inhalation studies. PMID- 3860693 TI - Lower extremity salvage with microvascular free flaps. PMID- 3860694 TI - Experience with flexible sigmoidoscopy in a training program. PMID- 3860695 TI - The purification of 3 beta-hydroxysteroid sulfotransferase of the hamster epididymis. AB - The purification of a hydroxysteroid sulfotransferase from the cytosolic fraction of the hamster epididymis is described using ammonium sulfate precipitation, gel filtration and PAP agarose affinity chromatography. A purification of 360-fold was achieved and resulted in the isolation of one major protein as evidenced by HPLC and SDS gel-electrophoresis. The "native" enzyme is a dimer of mol. wt 106,000 and is composed of subunits having the same molecular weight. PMID- 3860696 TI - Study of the levels of expression of two oncogenes, c-myc and c-myb, in acute and chronic leukemias of both lymphoid and myeloid lineage. AB - Total cellular RNA from a series of leukemic cell populations, both myeloid and lymphoid, as well as from normal circulating lymphocytes was analysed for the expression of two cellular oncogenes, c-myc and c-myb, by Northern blot hybridization assay. Expression of c-myc but not of c-myb was observed in unstimulated normal lymphocytes. Stimulation by PHA was shown to activate the expression of both genes. Remarkably different levels of expression of c-myc were observed in ALL, whereas in CLL the expression of c-myc was uniformly low or absent. Differential expression of c-myc was detected in AML as well as in CML, c myb was differentially expressed in AML and ALL, and absent in CLL and CML. Other single cases of hemopoietic disorders were studied, but the expression of the two oncogenes was low or absent. Neither evident genome amplification nor genome rearrangements were detected in the cell DNAs digested with restriction endonucleases. PMID- 3860697 TI - DNA ligases in human leukemia. AB - Following partial purification on sucrose gradient and/or phosphocellulose chromatography, DNA ligase was tested in peripheral white blood and bone marrow cells of nearly 100 patients with various kinds of leukemias, mainly acute leukemias. Terminal deoxynucleotidyl transferase (TdT) was tested in parallel. DNA ligase of acute myeloblastic leukemia (AML) was extracted with the same sedimentation coefficient (5.5S) on sucrose gradient, and eluted with the same KCl molarity (0.3 M) than the one extracted from normal lymphocytes. Acute lymphoblastic leukemias (ALL) were characterized by no detectable DNA ligase activity--in most T or non T-non B-ALL, or a low activity in pre-B and B (Burkitt type) ALL, with levels similar to the one observed in chronic lymphocytic leukemia (CLL). An inverse relationship was observed between DNA-ligase and TdT in ALL, ligase being undetectable in cells positive for TdT and being present in some T or non T-non B, and in all pre-B and B-ALL negative for TdT. AML and chronic myelocytic leukemia (CML) were characterized by a markedly higher DNA ligase activity. This activity was higher in the most differentiated subtypes- M2, M3 and M4 subtypes of FAB classification--and in CML. Moreover a high degree of correlation was observed in AML between the DNA ligase activity and the S phase fraction measured by 3 H-thymidine autoradiography or flow cytophotometry on the total cell sampling. Besides their clinical interest, these results are discussed in relation with the role of DNA-ligase in DNA replication and repair. PMID- 3860698 TI - In-vitro effect of retinoic acid on normal and chronic myeloid leukemia granulopoiesis. AB - The effect of increasing concentrations of retinoic acid (RA) on the in-vitro proliferation of normal and chronic myeloid leukemia (CML) granulo-monocyte precursors (CFU-GM) was studied. 10(-7)M RA added to semisolid cultures stimulated the growth of day 14 but not of day 7 normal CFU-GM, whereas in CML the growth of both populations was either unchanged or inhibited. Five-day and 10 day preincubation of normal bone marrow cells with RA augmented the number of day 14 CFU-GM (by up to 187% with 10(-6) M RA), whereas there was a marked decrease when CML cells were used. Total cellularity was not much affected, though a slight increase in liquid normal bone marrow cultures and a slight fall in CML cultures could be detected. These data point to a difference in the response to RA of normal and CML precursors. They may offer of preclinical basis for its employment to delay the blastic progression of CML. PMID- 3860699 TI - Ultrastructural peroxidase cytochemistry of three established human myelogenous leukemia cell lines, HL-60, KG-1 and ML-2. AB - We studied the ultrastructural peroxidase cytochemistry of three established human acute myelogenous leukemia cell lines (HL-60, KG-1 and ML-2) to clarify the cytochemical differences and the differences in maturation/differentiation stages. HL-60 cells contained azurophil granules which exhibited strong peroxidase reaction. The more central region of individual granules is less reactive than the outer portion of these granules. The secretory apparatus of HL 60 cells, i.e. rough endoplasmic reticulum, perinuclear cisterna and Golgi apparatus, also contained peroxidase-reactive material. ML-2 cells contained azurophil granules with peroxidase reaction; however, nuclear membranes were peroxidase-negative and thin cisternae of rough endoplasmic reticulum exhibited only a faint peroxidase reaction. KG-1 cells were peroxidase-negative. From these findings KG-1 is classified as the least mature of the cell lines studied. ML-2 cells are considered early promyelocytes and HL-60 cells as late promyelocytes. PMID- 3860701 TI - [Flap surgery with esthetic considerations--curtain surgery]. PMID- 3860700 TI - A novel Ph1 chromosome positive cell line established from a patient with chronic myelogenous leukemia in blastic crisis. AB - A novel Philadelphia (Ph1) chromosome positive cell line, designated KYO-1, was established from the peripheral blood of a patient with chronic myelogenous leukemia (CML) in blastic crisis. Although this line had a unique capacity to differentiate spontaneously along the erythroid and monocytoid lineages as evidenced by cytochemical analysis for the first several months, the capacity was gradually lost after repeated passages. The results suggest that KYO-1 is an undifferentiated myeloid cell line. This cell line provides a useful source for studying differentiation and proliferation of pluripotent stem cells from CML in blastic crisis. PMID- 3860702 TI - [Extraction of deciduous teeth, with special reference to occlusal induction]. PMID- 3860704 TI - [Dental xeroradiography]. PMID- 3860703 TI - [Problems with the mandibular second molar and the wisdom tooth]. PMID- 3860705 TI - [Occlusal management and health management for children]. PMID- 3860706 TI - [Somatoform disorders in the oral region]. PMID- 3860707 TI - Cytogenetic studies in 174 consecutive patients with preleukemic or myelodysplastic syndromes. AB - Routine cytogenetic studies were done in 174 consecutive patients with preleukemic or myelodysplastic syndromes (PL/MDS): 5 had the 5q - syndrome, 2 had refractory cytopenia, 43 had refractory anemia, 38 had refractory anemia with ringed sideroblasts, 69 had refractory anemia with excess blasts, 6 had refractory anemia with excess blasts in transition, and 11 had chronic myelomonocytic leukemia. Successful chromosome studies were accomplished in 167 patients (96%); 64 (37%) had a chromosomally abnormal clone. Abnormal clones were most common among patients who had refractory anemia with excess blasts (45%), refractory anemia with excess blasts in transition (60%), and chronic myelomonocytic leukemia (45%); they were least common among patients with refractory anemia (32%) and refractory anemia with ringed sideroblasts (21%). The two patients with refractory cytopenia had normal cytogenetic results. Each patient with the 5q - syndrome had a 5q-chromosome, as this is a prerequisite for the diagnosis. The two most common structural abnormalities were deletion of part of a chromosome 5 long arm (17 patients) and deletion of part of a chromosome 20 long arm (8 patients). Nonspecific structural abnormalities of chromosomes 1, 3, 6, and 17 were also common. The most common numeric abnormalities were monosomy 5 (7 patients), monosomy 7 (4 patients), loss of the Y chromosome (9 patients), and trisomy 8 (20 patients). No chromosome abnormalities were specifically associated with any PL/MDS classification. PMID- 3860708 TI - Chromosome abnormalities in preleukemic or myelodysplastic syndromes. PMID- 3860709 TI - [Anorexia and malnutrition in the hospitalized patient]. PMID- 3860710 TI - [Pathomorphosis of osteogenic sarcoma during combined therapy using local UHF hyperthermia]. PMID- 3860711 TI - [67Ga citrate scintigraphy of lymph nodes in children with Hodgkin's disease]. AB - Positive scintigraphy with 67Ga-citrate in examination of children with Hodgkin's disease is a useful and informative method to exclude primary involvement of the subdiaphragmatic regions of the lymphatic system in a pathological process and to assess the efficacy of therapy of specific lesion of the intrathoracic and retroperitoneal lymph nodes. This method is of utmost importance for a dynamic observation of the lymphatic system of patients in remission, for the detection and determination of site of Hodgkin's disease recurrences. PMID- 3860712 TI - Molecular and general genetics of a hybrid foreign gene introduced into tobacco by direct gene transfer. AB - Two clones of N. tabacum, transformed to kanamycin resistance by direct transfer to protoplasts of a hybrid gene, consisting of the protein coding region from the bacterial gene for aminoglycoside phosphotransferase under the control of 5'/3' expression signals from cauliflower mosaic virus gene VI, in the bacterial plasmid pUC8, have been subjected to a detailed genetic crossing analysis accompanied by Southern blot analysis and enzyme activity assays of representative offspring. The genetic data obtained from large populations of R1/F1 and R2/F2 offspring as well as from more than 20 subclones of each of the original of the hybrid gene was stably integrated into chromosomal DNA of the original transformants, (b) that the gene normally was stably maintained during clonal proliferation, (c) that normally it is transmitted in a regular fashion (with exceptions) to sexual offspring, and (d) that it is inherited as a single dominant trait. Data from DNA hybridisation and enzyme assays confirm this interpretation. The functional gene is integrated together with several non functional copies and bacterial plasmid sequences, which are inherited as one block together with the functional gene. PMID- 3860713 TI - CSF in CNS leukaemia. PMID- 3860715 TI - [Hypertension and polycythemia in a case of acute lymphatic leukemia]. PMID- 3860714 TI - Lipid-lowering drugs. PMID- 3860716 TI - [Sjogren's syndrome: new research aspects. Our experience with 34 cases. IV]. PMID- 3860717 TI - [Therapy of Pierre Robin syndrome]. PMID- 3860718 TI - [Oral microbial flora and sucking]. PMID- 3860719 TI - [Follicular cysts: technical details for the preservation and functional recovery of the intracystic teeth]. PMID- 3860720 TI - [Relation between oral conditions and diet in the elderly. A clinical study]. PMID- 3860721 TI - [Case of fibrous dysplasia of the jaws: problems of differential diagnosis]. PMID- 3860722 TI - [Oral manifestations of Gardner's syndrome]. PMID- 3860723 TI - [Endodontic therapy for deciduous teeth]. PMID- 3860724 TI - [Correction of the crossbite of single teeth using fixed orthodontic treatment]. PMID- 3860725 TI - [Indications for the use of soft laser therapy in dentistry]. PMID- 3860727 TI - [Therapeutic value of cefroxadin (CGP 9000) in ambulatory dental practice]. PMID- 3860726 TI - [Short-term clinico-statistical study of the anti-inflammatory activity of proglumetacin in ambulatory dental practice]. PMID- 3860728 TI - [Use of the sodium salt of naproxen as an analgesic in toothache symptoms]. PMID- 3860729 TI - Effect of neplanocin A on differentiation, nucleic acid methylation, and c-myc mRNA expression in human promyelocytic leukemia cells. AB - The effect of the cyclopentenyl adenosine analog neplanocin A (NPC) on cell growth and differentiation was examined in the human promyelocytic leukemia cell line HL-60. Continuous exposure of HL-60 cells to 0.1-3.3 microM NPC resulted in a progressive reduction in cell growth which was accompanied by an increase in differentiation to cells with a myelocyte and neutrophil morphology. The latter effect was expressed as an increase in the capacity of cells to reduce nitro blue tetrazolium and reached a level of 40% of the total cell population. Preceding the phenotypic changes was the preferential inhibition of RNA and DNA methylation in comparison to inhibition of their synthesis which coincided with the formation of a metabolite of NPC with the chromatographic characteristics of S-adenosyl-L methionine (AdoMet). In addition, c-myc mRNA expression, which is amplified in HL 60 cells, was markedly reduced following NPC treatment. These results indicate that NPC is an effective inhibitor of RNA and DNA methylation resulting from its conversion to an analog of AdoMet, and that these effects appear to be responsible for reduced c-myc RNA expression and the induction of myeloid differentiation in this cell line. PMID- 3860731 TI - [Clinical-statistical considerations on 102 cases of salivary calculi]. PMID- 3860730 TI - 1,25-Dihydroxyvitamin D3 induces a myelomonocytic phenotype with enhanced effector cell function in the HL-60 promyelocytic leukemia cell line. AB - Human promyelocytic leukemia (HL-60) cells were induced by 1,25-dihydroxyvitamin D3 (calcitriol) to differentiate and examined using a panel of monoclonal antibodies (MoAbs) and functional assays. Although morphologically and histochemically these cells appeared to be of the monocyte-macrophage phenotype, there was a decline in Fc receptors for IgGl and no induction of class II HLA antigens. There was, however, dramatic induction of the antigen detected by the myeloid-specific MoAb AML-2-23. These data suggest that the phenotypic changes induced by calcitriol in HL-60 cells are consistent with myelomonocytic differentiation in that the resultant cells possess characteristics of both monocytes (morphology, non-specific esterase staining, high levels of AML-2-23 reactivity) and granulocytes (PMN 29 binding, decreased Fc receptors for IgGl, absence of class II HLA antigens). Perhaps more important, the ability of calcitriol-treated cells to perform antibody-dependent cellular cytotoxicity and phagocytosis was markedly augmented. Lysis of antibody-coated erythrocytes by HL 60 cells increased from 5% in controls to 30-35% with calcitriol treatment for 4 days. This enhanced effector cell function was seen despite a decline in Fc receptors measured by cytofluorography. These data suggest that calcitriol may be involved in both differential and functional activation of myeloid cells. PMID- 3860732 TI - Lymphoma presenting as a traumatic hematoma in an HTLV-III antibody-positive hemophiliac. PMID- 3860733 TI - Presence of clonal chromosome abnormalities in virtually all cases of acute lymphoblastic leukemia. PMID- 3860735 TI - Law-medicine notes--AIDS research and "the window of opportunity". PMID- 3860734 TI - Effect of hypophosphatemia on diaphragmatic contractility in patients with acute respiratory failure. AB - We studied the effects of hypophosphatemia on diaphragmatic function in eight patients with acute respiratory failure who were artificially ventilated. Their mean serum phosphorus level was 0.55 +/- 0.18 mmol per liter (normal value, 1.20 +/- 0.10). The contractile properties of the diaphragm were assessed by measuring the transdiaphragmatic pressure generated at functional residual capacity during bilateral supramaximal electrical stimulation of the phrenic nerves. Diaphragmatic function was evaluated in each patient before and after correction of hypophosphatemia, which was achieved by administration of 10 mmol of phosphorus (as KH2PO4) as a continuous infusion for four hours. After phosphate infusion, the mean serum phosphorus level increased significantly (1.33 +/- 0.21 mmol per liter, P less than 0.0001). The increase in serum phosphorus was accompanied by a marked increase in the transdiaphragmatic pressure after phrenic stimulation (17.25 +/- 6.5 cm H2O as compared with 9.75 +/- 3.8 before phosphate infusion, P less than 0.001). Changes in the serum phosphorus level and transdiaphragmatic pressure were well correlated (r = 0.73). These results strongly suggest that hypophosphatemia impairs the contractile properties of the diaphragm during acute respiratory failure, and they emphasize the importance of maintaining normal serum inorganic phosphate levels in such patients. PMID- 3860736 TI - Family medicine at Duke: excellence defined. PMID- 3860737 TI - You're in for a treat: asparagus. PMID- 3860738 TI - Increase in health professionals in North Carolina: 1978-1983. PMID- 3860739 TI - In vitro fertilization at the North Carolina Memorial Hospital in Chapel Hill. PMID- 3860740 TI - Provocative exercise testing: a new role for cardiac rehabilitation. PMID- 3860741 TI - Aquarius redux--lysergic acid diethylamide. PMID- 3860742 TI - A checklist of practice marketing ideas. PMID- 3860744 TI - Terminal illness management electives--the establishment of a TIME committee. PMID- 3860743 TI - Lest we forget--spring is here: North Carolina spotless fever in adults. PMID- 3860745 TI - Medical revolution--hospital crisis. PMID- 3860746 TI - In support of a model bill allowing the use of insect sting kits by trained laymen. PMID- 3860747 TI - Familial neuropathy with dementia, retinitis pigmentosa, and dysautonomia. AB - We studied a 59-year-old woman with dementia, retinitis pigmentosa, sensorimotor neuropathy, and attacks of vomiting associated with blood pressure lability and loss of consciousness. Abnormalities included CT evidence of cerebral atrophy, low IQ, slow central and peripheral nerve conduction velocities, axonal degeneration in sural nerve biopsy, and elevated levels of catecholamines and slow waves in EEG during attacks. Her sister, two brothers, and daughter also had progressive muscle weakness, visual disturbance, and similar vomiting attacks. The hereditary nervous system disorder does not fit any previously described condition. PMID- 3860748 TI - Hereditary sensory neuropathy: biopsy study of an autosomal dominant variety. AB - We studied sural nerve biopsies from a family in which three members in two generations (father, son, and daughter) had a dominantly inherited neuropathy (HSAN-I). There was marked loss of myelinated fibers, especially those of large diameter, and there was comparable loss of unmyelinated fibers. These quantitative findings differed from another reported case that provided basis for the classification of dominant and recessively inherited sensory neuropathies. Few patients have been studied, so ultrastructural and morphometric data have limited value in classification of these disorders, for which there is still no known biochemical marker. PMID- 3860750 TI - Sleep disorders in Gilles de la Tourette's syndrome. PMID- 3860749 TI - ATP degradation products after ischemic exercise: hereditary lack of phosphorylase or carnitine palmityltransferase. AB - We measured purine degradation products of ATP in plasma after ischemic exercise in eight normal subjects, one patient with myophosphorylase deficiency (McArdle's disease), and one with carnitine palmityltransferase deficiency. Normal subjects increase hypoxanthine and inosine, but not xanthine. Plasma purine levels were elevated above the normal range after ischemic exercise in McArdle's disease and in carnitine palmityltransferase deficiency after fasting. Those changes implied abnormally accelerated ATP degradation in these two myopathies. PMID- 3860751 TI - Humoral hypercalcemia of malignancy (pseudohyperparathyroidism) PMID- 3860752 TI - Endolymphatic stromal myosis--a misconception. PMID- 3860753 TI - The relationship of thrombocytopenia to the onset of persistent pulmonary hypertension of the newborn in the meconium aspiration syndrome. PMID- 3860754 TI - Sarcoidosis of the breast. PMID- 3860755 TI - Intrathymic parathyroid adenoma in a child. PMID- 3860756 TI - Amniotic fluid embolism. PMID- 3860757 TI - Spontaneous remission in acute nonlymphocytic leukemia. PMID- 3860758 TI - Accidental drownings in Auckland children. AB - We consider the circumstances surrounding 60 consecutive cases of accidental drowning of children in the Auckland coronial district. More deaths occurred around the home than anywhere else. Forty-one of the fatalities occurred around the home with only two being over the age of six years. The unfenced or inadequately fenced domestic swimming pool was the most common hazard. The household bath and partly filled buckets represent further although less frequent dangers. The study reaffirms the need for legislation making the fencing of domestic swimming pools mandatory. Elsewhere, young children playing in or near water need constant supervision. More victims received either no resuscitation or inadequate resuscitation until an ambulance crew arrived at the home. This further emphasises the value of a sound knowledge of cardiopulmonary resuscitation techniques in the general population. PMID- 3860759 TI - Polycythaemia associated with a new haemoglobin variant: haemoglobin Palmerston North beta 23 (B5) val----phe. AB - A new haemoglobin variant, with increased oxygen affinity, has been identified in a patient with a long history of polycythaemia. This new haemoglobin, Hb Palmerston North, has an amino acid substitution of valine to phenylalanine at position beta 23 (B5). The increased oxygen affinity is accompanied by a decrease in globin stability which was responsible for the laboratory detection of the haemoglobinopathy. PMID- 3860760 TI - Management of acute asthma attacks in Auckland A & E departments. AB - Many asthmatics in the Auckland area use hospital accident and emergency (A & E) departments as the primary source of treatment during acute asthmatic attacks. A review of A & E records has revealed important variations in the standard of care they receive, and highlights the need for further education of A & E officers. PMID- 3860762 TI - Food consumption pattern during a drought in Tonga. AB - Seven and eight year old primary school children were interviewed to rapidly assess food consumption patterns during a drought in Tonga. Of the 158 children interviewed, 11 (7%) reported hunger in their households and four (2.4%) reported one meal per day. Carbohydrate consumption was high but protein and vegetables were low. This simple study provided crude but useful and timely information for decision making. PMID- 3860761 TI - Percentage of anaesthetic fee refunded to patients by schedule-using private medical insurers in New Zealand. AB - Refunds for anaesthetic services payable to patients by schedule-using private medical insurers or agencies have not been realistically adjusted for inflation or growth in incomes. Patients receive a lower actual refund than that usually implied by the insurers. If private anaesthetic fees had increased in line with award weekly wages, the average refund to patients would have been approximately 50% for most of the period 1968-1981. PMID- 3860763 TI - Asthma mortality. PMID- 3860764 TI - Diabetes mellitus. PMID- 3860766 TI - Acupuncture and placebos. PMID- 3860765 TI - Mental Health Act reform. PMID- 3860767 TI - Waikikamoukau flu. PMID- 3860769 TI - Dalkon Shield. PMID- 3860770 TI - Hysterectomy advice. PMID- 3860768 TI - Amoxapine overdosage and primary lactic acidosis. PMID- 3860771 TI - The unique function of nursing. PMID- 3860772 TI - Health service personnel commission. PMID- 3860774 TI - Presidential address: Conference '85. PMID- 3860773 TI - Opening address: Conference '85. PMID- 3860775 TI - Alcoholism in a rural community: report on a pilot scheme for management. PMID- 3860776 TI - A study of four methods of nipple care offered to post partum mothers. PMID- 3860777 TI - Stress in nurses. Some initial findings on the causes and consequences. PMID- 3860778 TI - Ethics and nursing: tomorrow's thrust. PMID- 3860779 TI - Ethical dilemma. PMID- 3860780 TI - Answering questions about computers. PMID- 3860781 TI - Business computers for dentists. PMID- 3860782 TI - Should I buy a computer for my office? PMID- 3860783 TI - Getting married to a computer. PMID- 3860784 TI - Need for computer digest of dental information for quality control application in the dental office. PMID- 3860785 TI - Computer groupies. PMID- 3860786 TI - Surgical correction of disorders of the TMJ. PMID- 3860787 TI - The big transition. PMID- 3860789 TI - Comparison of intravenous oxytocin and vaginal prostaglandin E2 gel in women with unripe cervixes and premature rupture of the membranes. AB - To induce cervical priming and labor, 20 nulliparous term pregnant women with premature rupture of the membranes and unfavorable cervical states were randomly given either oxytocin intravenously or 4 mg prostaglandin E2 in gel intravaginally. One of ten women receiving oxytocin had a favorable cervical state within five hours and vaginal delivery within 24 hours after the start of the infusion compared with six of ten women after prostaglandin E2 gel application. This difference is statistically significant (P less than .01). The number of instrumental deliveries was nine (four cesarean sections and five vacuum extractions) in the oxytocin-treated patients compared with only two vacuum extractions in women who received prostaglandin E2 gel. This difference is also statistically significant (P less than .01, Fischer exact test). In a subsequent open study, 4 mg prostaglandin E2 gel was applied vaginally to 17 term pregnant women of mixed parity with premature rupture of the membranes and unfavorable cervixes. In 12 women a favorable cervical state was achieved within five hours after gel application, and all these women were delivered within 24 hours. None of the women required cesarean section but two required delivery by vacuum extraction. There were no perinatal losses, but two infants in the oxytocin-treated group had Apgar scores less than 7 at five minutes. At pediatric follow-up after two and six months, all infants were normal. In both obstetric and perinatal outcome prostaglandin E2 gel thus seems to be superior to oxytocin for labor induction in term pregnant patients with premature rupture of the membranes and unfavorable cervixes. PMID- 3860790 TI - Cefmenoxime therapy for gynecologic and obstetric infections. AB - Cefmenoxime, a new third-generation cephalosporin, was used as a single drug in the therapy for female genital tract infections. Therapeutic response was considered satisfactory in 21 of 22 cases of pelvic inflammatory disease, six of nine tuboovarian abscesses, two of three severe wound infections, and all five cases of endometritis. Overall, 34 of 39 patients responded. The peak serum antibiotic levels in this study ranged from 15.8 to 64 (average 48.7) micrograms/mL, and the trough level ranged from 0.9 to 4 (average 3.1) micrograms/mL. Cefmenoxime was tested in vitro against 424 isolates of anaerobes including 208 strains of bacteroides of which 80 were Bacteroides fragilis. Cefmenoxime inhibited the growth of 90% or greater of the organisms (minimal inhibitory concentration 90) at less than or equal to 64 micrograms/mL. The minimal inhibitory concentration for 75% of B fragilis was 32 micrograms/mL. This study suggests that cefmenoxime as a single-drug therapy is effective in the treatment of female genital tract infections caused by aerobic (including the gonococcus) and anaerobic bacteria. PMID- 3860788 TI - Prostaglandin F2 alpha for prevention of urinary retention after vaginal hysterectomy. AB - The delay in spontaneous micturition after pelvic surgical procedures is a significant complication. This study was performed to establish the validity of intravesical instillation of prostaglandin F2 alpha in the prevention of urinary retention after vaginal surgery. For this purpose 102 patients were randomly and alternatively allocated to receive either 16 mg of prostaglandin F2 alpha diluted in 40 mL of saline or saline only given intravesically. Similar numbers of patients with vaginal hysterectomy (27 versus 31), vaginal repair (12 versus 11), and repair with Kelly urethral plication (12 versus 9) were included in the study and control group, respectively. The frequency of urinary retention in the women treated with prostaglandin F2 alpha was decreased significantly as compared with those treated with saline alone (P less than .02). But this was true for women undergoing vaginal hysterectomy only. There was also a significantly shorter hospitalization of women receiving prostaglandin F2 alpha (P less than .05) and there were no side effects. PMID- 3860791 TI - [Oro-sinus communication. Problems of professional responsibility]. PMID- 3860792 TI - [Orodental, pharyngeal and sinus focal diseases and multiple foci coronary diseases]. PMID- 3860793 TI - [Torus palatinus: description of a clinical case]. PMID- 3860794 TI - [A new injectable anesthetic available to the dentist]. PMID- 3860795 TI - [When a titanium endosseous screw breaks during or after the surgery]. PMID- 3860796 TI - Cerebrovascular accidents in children with cancer. AB - During a 4-year period, 26 children with systemic malignancies suffered cerebrovascular accidents. These occurred in 17 patients with lymphoreticular malignancy and nine patients with solid tumors. They were the presenting signs of malignancy in three patients and were the direct cause of death in six. Cerebrovascular accidents were directly related to disseminated intravascular coagulation in eight patients, to chemotherapy in eight patients, to metastatic tumor in three patients, to thrombocytopenia in three patients, and to fungal meningitis in one patient. All patients with disseminated intravascular coagulation had leukemia and at times, cerebrovascular thrombosis predated systemic or laboratory evidence of disseminated intravascular coagulation. This review indicates that four major syndromes are apparent in children with cancer: vascular thrombosis associated with disseminated intravascular coagulation, acute arterial or sagittal sinus thrombosis secondary to L-asparaginase in children with leukemia, acute neurologic dysfunction in patients with osteogenic sarcoma treated with high-dose methotrexate, and obtundation, seizures, and focal neurologic deficits in patients with neuroblastoma metastatic to the torcular region. Although elevated WBC counts and thrombocytopenia occur frequently in children with cancer, in themselves they uncommonly result in strokes. It is concluded that cerebrovascular accidents are a relatively frequent cause of acute neurologic compromise in children with cancer and that certain types of malignancies and their treatment predispose patients to this complication. PMID- 3860797 TI - Aspects of the chemical stability of doxorubicin and seven other anthracyclines in acidic solution. AB - The degradation of doxorubicin in acidic medium has been investigated using a stability indicating high pressure liquid chromatographic assay. Influences of temperature, pH and ionic strength on the degradation rate are quantified. The stability of doxorubicin at 50 degrees C is compared with those of seven related anthracyclines. The aglycone degradation products are characterized by mass spectrometry and by chromatography. PMID- 3860798 TI - Action of acid on oligoribonucleotide phosphotriester intermediates. Effect of released vicinal hydroxy functions. AB - When 2'-O-methoxytetrahydropyranyl-5'-O-(9-phenylxanthen-9-yl) uridylyl-(3'--- 5')-(2',3'-di-O-acetyluridine) 2-chlorophenyl ester (9) is treated with zinc bromide in dichloromethane-propan-2-ol (85:15 v/v) at room temperature, under stringently anhydrous conditions, the corresponding 5'-unblocked dinucleoside phosphate (10) is obtained in 86% isolated yield; however, when no special precautions are taken to exclude moisture, (10) is obtained in only 72% yield. The removal of the 5'-O-(9-phenylxanthen-9-yl) protecting group from (10) with a protic acid (phenyl dihydrogen phosphate) appears to be much less selective and efficient. 80% Acetic acid promoted removal of the methoxytetrahydropyranyl protecting group from the isomeric fully-protected uridylyl-(3'----5')- and uridylyl-(2'----5')-uridine derivatives [(11) and (21c), respectively] leads to virtually identical mixtures [Figures 1a and 1b, respectively] of the partially protected dinucleoside phosphates [(14) and (15)], 2',3'-di-O-acetyluridine (8), 5'-O-acetyluridine 2',3'-cyclic phosphate (16), and 5'-O-acetyluridine 2'(3') phosphates [(18) and (17)]. PMID- 3860799 TI - [Basophilic myelocytic leukemia]. PMID- 3860800 TI - The assessment of anorexia nervosa and bulimia. PMID- 3860801 TI - Bulimia. Growing 'epidemic' among women. AB - Bulimia is a serious eating disorder that appears to be increasing in frequency among young females. It is characterized by uncontrolled binge eating that may be followed by purging. Serious medical complications may result if bulimia is not diagnosed and treated effectively. Evidence indicates that bulimia may be closely related to affective disorder, and therefore antidepressant drugs should be considered in therapy. PMID- 3860802 TI - [Occlusal rehabilitation with PMS method, with special reference to anterior guidance]. PMID- 3860803 TI - [Mandibular movement that needs to be registered by articulators]. PMID- 3860804 TI - [Bioelectric processor EM-2 for dental use (1)]. PMID- 3860805 TI - [Geriatric dentistry and prosthetics. A discussion]. PMID- 3860806 TI - Gestational changes in prostaglandin production by ovine fetal trophoblast cells. AB - The effect of gestational age on the synthesis of prostaglandins (PG) by isolated preparations of uninucleate and binucleate cells of the ovine placentome has been investigated. PG synthesis by the cells was dependent upon cell number in a linear manner, and was significantly inhibited by indomethacin, but not affected by the addition of exogenous arachidonic acid. The net output of PG by the cells increased progressively with increasing gestational age of the ewe from 35 to 145 days, particularly after 100 days' gestation. The cells prepared from tissue obtained during the last trimester of pregnancy have the ability to produce PGE2 and PGF2 alpha in approximately equal amounts, and a lower synthetic capacity for 6-keto PGF2 alpha. The cells also have the capacity to metabolize PGF2 alpha to 13,14-dehydro, 15-keto PGF2 alpha. Thus the fetal trophoblast cells appear to be the major site of PG production by the placenta at parturition. PMID- 3860807 TI - [Prevention in the elementary schools in Trezzano on the Naviglio]. PMID- 3860808 TI - [Bacterial plaque and dental hygiene]. PMID- 3860809 TI - Domains in viroids: evidence of intermolecular RNA rearrangements and their contribution to viroid evolution. AB - On the basis of sequence homology a model is proposed for five structural and functional domains in viroids. These domains include (i) a conserved central region capable of forming two alternative structures that may regulate two phases of the viroid replication cycle, (ii) a region associated with pathogenicity, (iii) a domain with high sequence variability, (iv and v) two terminal domains that are interchangeable between viroids. That the evolution of viroids has involved RNA rearrangements of domains is supported by the partial duplication of coconut cadang cadang viroid, which arises de novo during each infection. Similar RNA rearrangements have been established for animal viral defective interfering RNAs, which arise by some form of discontinuous transcription. This mechanism could account for the origin of viroids and also RNA viruses, whereby modules of genetic information may have undergone repeated exchange between RNA pathogens and the RNA of their hosts. PMID- 3860810 TI - Initiator tRNA may recognize more than the initiation codon in mRNA: a model for translational initiation. AB - A special methionine tRNA (tRNAi) is universally required to initiate translation. Amongst species a tRNAi structural conservation is most apparent in the anticodon and T arms of the molecule but extends into the variable loop and the 3' strand of the D stem. This suggested that they could share a similar ancestral or current function in initiation of translation. We report that the sequence of bases neighboring the translational start codons of many eubacterial genes are complementary not only to the extended anticodon but also to the D and T loops of tRNAi. Study of the coding properties of tRNAi and of mutations that affect translation suggests that the translational start domain can be a mosaic of signals complementary to the loops of tRNAi. The hypothesis of multiple loop recognition suggests that unusual triplets can start prokaryotic and mitochondrial genes and predicts the occurrence of other reading frames. Furthermore, it suggests a unifying model for chain initiation based on RNA contacts and displacements. PMID- 3860811 TI - Cloning and expression of apolipoprotein B, the major protein of low and very low density lipoproteins. AB - We report the cloning of cDNAs for rat liver apolipoprotein B (apo B) and the use of the cloned sequences to examine apo B expression at the level of mRNA in rat tissues. Fifteen putative apo B clones were identified by antibody screening of a rat liver cDNA library in the lambda gt11 expression vector. The identity of the clones was confirmed by immunological studies of the fusion protein products. All clones appear to contain sequences found only in apo B PI, the high molecular weight form of rat liver apo B. Blotting studies show that the clones hybridize to a single 20-kilobase liver mRNA species, sufficiently large to encode the entire apo B PI peptide, which is estimated to be 400 kDa in size. Apo B PI mRNA is abundant in liver and present in lower amounts in intestine but is absent in a variety of other tissues examined. This tissue distribution is consistent with that expected from studies on the in vivo synthesis of apo B. One clone, corresponding to a 240-base segment of the apo B PI mRNA, was sequenced and found to exhibit homology with a short region of rat apo E mRNA. Analysis of the secondary structure of the corresponding peptide did not show the preponderance of amphipathic alpha-helical structures characteristic of other apolipoproteins examined thus far. PMID- 3860812 TI - Hb Long Island: a hemoglobin variant with a methionyl extension at the NH2 terminus and a prolyl substitution for the normal histidyl residue 2 of the beta chain. AB - Hb Long Island was found in a diabetic man and his nondiabetic mother as the result of a routine clinical measurement of Hb AIc. It is present in amounts approximately equal to Hb A. Its alpha chains are normal but its beta chains have two alterations compared to the normal. A methionyl residue is attached to the usual NH2-terminal valyl residue. This valyl residue is followed by prolyl residue in place of the usual histidyl residue 2. The remaining sequence of the beta chain is normal. No hemoglobin or abnormal beta chain containing only the prolyl substitution could be detected by several different electrophoretic and HPLC procedures. We postulate that Hb Long Island is the result of a mutation in which a single nucleotide change causes the substitution of a prolyl residue for the normal histidyl residue at position 2 of the beta chain. We further postulate that this abnormal prolyl residue inhibits enzymatic cleavage of the initiator methionyl residue from the abnormal beta chain during posttranslational processing. Although the oxygen affinities of the whole blood, suspended cells, and hemolysate are normal, the affinity of the isolated Hb Long Island is slightly decreased and the effects of organic phosphates are reduced compared to normal. These changes are consistent with the loss of the normal histidyl residue 2 and the extension of the NH2-terminal end of the beta-chain molecule. PMID- 3860813 TI - Fusion of influenza virus membranes with liposomes at pH 7.5. AB - Influenza virus X-31 (H3N2) membranes fuse with liposomes containing ganglioside GD1a at pH 7.5. Fusion was demonstrated by electron microscopy and also can be measured by counting the labeled virus proteins incorporated into liposomes after bound virus has been removed. Liposomes composed of lipids that have no net charge behave as reported by other investigators and do not fuse with influenza X 31 membranes at neutral pH, but they do fuse at low pH. Therefore, the liposomal composition is a factor in whether liposomes fuse with influenza virus membranes at neutral pH, probably by determining whether binding occurs. The liposomal composition necessary for fusion at neutral pH needs to be individualized for each influenza subtype. To establish that a virus requires low pH for membrane fusion, it is first necessary to establish that fusion does not occur at neutral pH under conditions where adequate binding occurs. PMID- 3860814 TI - Nucleosome core particles suppress the thermal untwisting of core DNA and adjacent linker DNA. AB - Covalently closed circular DNA is known to undergo a temperature-dependent change in helical twist. We have reconstituted nucleosome core particles onto closed circular DNA and measured the thermal untwisting of the DNA as a function of nucleosome density. The results demonstrate that the DNA associated with the nucleosome core particle does not alter its twist when the temperature is varied between 4 degrees C and 37 degrees C, and that the length of DNA prevented from thermal untwisting includes the linker as well as the core DNA. PMID- 3860815 TI - Metabolism of retinoic acid and retinol during differentiation of F9 embryonal carcinoma cells. AB - Retinol and retinoic acid dose-response curves were obtained for promotion of the differentiation of F9 murine embryonal carcinoma cells with an enzyme-linked immunoadsorbent assay for laminin, a product of differentiated F9 cells. Retinoic acid produced a half-maximum response at 1.3 nM and a maximum response at about 30 nM; retinol was 1/175th as potent. Maximum differentiation required 48 hr of continuous exposure to retinoic acid, whereas retinol required 72 hr of exposure. The half-time of retinoic acid conversion into polar metabolites was 3.5 hr; metabolism was accelerated by pretreating F9 cells with retinoic acid. An inhibitor of oxidative metabolism, ketoconazole, decreased the rate of retinoic acid metabolism and decreased the concentration of retinoic acid required to produce a half-maximum response. Unchanged retinoic acid was the sole compound isolated from nuclei of F9 cells incubated with retinoic acid. Retinol had a half life approximately 5-fold longer than retinoic acid, attained greater cell concentrations, and was converted into retinoic acid by F9 cells. These data indicate that retinoic acid itself directs the differentiation of F9 cells and may mediate differentiation induced by retinol. PMID- 3860816 TI - Origin and turnover of mitochondrial glutathione. AB - Mitochondrial glutathione in liver does not arise by intramitochondrial synthesis, but rather from the cytoplasm, by a process characterized by slow net transport and more rapid exchange transport. PMID- 3860817 TI - Synchrotron radiation x-ray scattering in the early stages of in vitro collagen fibril formation. AB - The time course of in vitro collagen fibril formation was monitored by synchrotron radiation x-ray scattering. Collagen polymerization was induced by a temperature jump from 4 degrees C to 32 degrees C and the solution scattering pattern was recorded continuously with a time resolution of a few seconds. The scattered intensity increased as soon as the final temperature was attained, without discernible lag phase, when the collagen concentration was about 0.56 mg/ml, whereas turbidimetric measurements revealed a lag phase of ca. 2.5 min at 1.05 mg/ml. A direct correlation was found between the temperature and both the rate of formation and the total amount of early aggregates. The formation of these aggregates was only partially reversed by lowering the temperature, except when the collagen had been prevented from forming Schiff base-mediated intermolecular crosslinks by sodium borohydride reduction. In this case, formation of aggregates was completely reversible. We conclude that the aggregates that appear to correspond to the subfibrils proposed on the basis of independent methods are formed and simultaneously crosslinked in the early phases of in vitro collagen self-assembly. PMID- 3860818 TI - Cell-specific immunohistochemical localization of a cellular retinol-binding protein (type two) in the small intestine of rat. AB - One of us recently has reported the purification of a new retinol-binding protein that is distinctly different from the well-known cellular retinol-binding protein, CRBP. This protein, which we propose to name cellular retinol-binding protein type II [CRBP(II)], was found almost exclusively in the small intestine of the adult rat at levels 1000 times greater than that of CRBP. Here we have determined the cellular location of these two proteins in the small intestine of the rat. By using an immunohistochemical technique, the absorptive cells of the small intestine, from the duodenum to the ileum, were strongly stained when antiserum against CRBP(II) was used. More intense staining was observed in absorptive cells near the tips of the villi than in those located at the base of the villi. However, the proliferative cells in the crypts of Lieberkuhn were stained only lightly if at all. In contrast to absorptive cells, goblet cells in the villi did not stain. When tissue sections containing the gastroduodenal junction were examined, no staining was observed in the gastric epithelium, while the epithelium of the most proximal portion of the duodenum showed very strong staining. In tissue sections containing the ileocecal junction, staining terminated abruptly at the end of the distal ileum. No staining was observed in the epithelium of the colon. In contrast, the cellular location of CRBP in the small intestine was quite different from the cellular location of CRBP(II). The epithelial cells of the small intestine showed no staining when affinity-purified anti-CRBP was used. Staining was observed for connective tissue cells in the lamina propria and in cells located within the gut-associated lymphoid tissue. The cell-specific localization pattern determined for these two proteins suggests that CRBP(II), rather than CRBP, is the protein that plays a role in the absorption of retinol. PMID- 3860820 TI - Nuclear lamins and peripheral nuclear antigens during fertilization and embryogenesis in mice and sea urchins. AB - Nuclear structural changes during fertilization and embryogenesis in mice and in sea urchins have been followed by using antibodies against the nuclear lamins A/C and B and against antigens at the periphery of nuclei and chromosomes. Lamins are found on all pronuclei and nuclei during mouse fertilization, but with a diminished intensity on the second polar body nucleus. On sperm in both systems, lamins are reduced and detected only at the acrosomal and centriolar fossae. In sea urchin eggs, lamins are found on both pronuclei. Unlike in other dividing cells, the mitotic chromosomes of sea urchin eggs and embryos retain an association with lamins. The peripheral antibodies delineate each chromosome and nucleus except the mature mouse sperm nucleus. A dramatic change from the expected lamin distribution occurs during early development. In mouse morulae or blastocysts, lamins A/C are no longer recognized, although lamin B remains. In sea urchins both lamins A/C and lamin B, as detected with polyclonal antibodies, are lost after the blastula stage, although a different lamin A/C epitope emerges as recognized by a monoclonal antibody. These results demonstrate that pronucleus formation in both systems involves a new association or exposure of lamins, that the polar body nucleus is largely restricted from the cytoplasmic pool of lamins, and that mitotic chromosomes in the rapidly proliferating sea urchin egg retain associated lamins. They also suggest that changes in the expression or exposure of different lamins are a common feature of embryogenesis. PMID- 3860819 TI - Evidence for specific DNA sequences in the nuclear acceptor sites of the avian oviduct progesterone receptor. AB - Recent studies have shown that saturable high-capacity nuclear binding sites (termed acceptor sites) for the avian oviduct progesterone receptor can be reconstituted by rehybridizing a specific oviduct chromatin protein fraction (CP 3) to pure hen DNA to generate a reconstituted nucleoacidic protein (NAP). Only a limited number of acceptor sites can be generated on hen DNA even at high protein/DNA ratios. This suggests the existence of a limited number of specific sequences in the avian genome that can participate in the acceptor sites. The studies presented in this paper show a specificity as to the source of DNA that can generate acceptor sites using hen oviduct CP-3 protein. The acceptor protein binds to all DNAs but generates acceptor sites only on DNAs from certain animals. The acceptor sites for the progesterone receptor, generated with heterologous mammalian DNAs and the avian oviduct CP-3 fraction, show saturation not only in number of acceptor sites generated on the DNAs but also in progesterone receptor binding. Binding to these sites is also receptor dependent. Using oviduct receptors from particular physiological states of the birds wherein the receptors do not bind to nuclear sites in vivo, it was found that the cell-free binding to these heterologous complexes of hen CP-3 protein and DNA from another species, termed heterologous NAP, is similarly absent. Thus, the cell-free binding to the native oviduct NAP and the heterologous NAP markedly resembles the nuclear binding in vivo. Interestingly, synthetic DNAs rich in adenine and thymine, but not those rich in guanine and cytosine, are capable of generating acceptor sites. Species-specific DNA sequences, as well as specific chromatin proteins, therefore, appear to be involved in the nuclear acceptor sites for the avian oviduct progesterone receptor. The DNA sequences appear to be conserved throughout most of the vertebrates but not among nonvertebrates as are the steroid hormones and their receptors. The exact numbers and distributions of these sequences in the avian genome are not known. PMID- 3860821 TI - Inherently radioresistant cells exist in some human tumors. AB - We investigated the survival of 29 human tumor cell lines after treatment with ionizing radiation during exponential growth. The radiosensitivity of 20 tumor cell lines was within the range of normal fibroblasts. However, 9 cell lines derived from radio-incurable tumors appeared inherently radioresistant. When the ability to repair potentially lethal x-ray damage was studied in plateau phase cultures, some tumor cell lines derived from radio-incurable tumors were more efficient in this process. These results indicate that the presence of radioresistant and/or repair-proficient cells, which exist in some human tumors, may be responsible for failure to obtain local control following therapeutic x ray treatment. PMID- 3860822 TI - Ancient origin for Hawaiian Drosophilinae inferred from protein comparisons. AB - Immunological comparisons of a larval hemolymph protein enabled us to build a tree relating major groups of drosophiline flies in Hawaii to one another and to continental flies. The tree agrees in topology with that based on internal anatomy. Relative rate tests suggest that evolution of hemolymph proteins has been about as fast in Hawaii as on continents. Since the absolute rate of evolution of hemolymph proteins in continental flies is known, one can erect an approximate time scale for Hawaiian fly evolution. According to this scale, the Hawaiian fly fauna stems from a colonist that landed on the archipelago about 42 million years ago-i.e., before any of the present islands harboring drosophilines formed. This date fits with the geological history of the archipelago, which has witnessed the sequential rise and erosion of many islands during the past 70 million years. We discuss the bearing of the molecular time scale on views about rates of organismal evolution in the Hawaiian flies. PMID- 3860823 TI - Peroxide-producing potential of tissues: inverse correlation with longevity of mammalian species. AB - Peroxidation reactions may cause many of the dysfunctions associated with aging. Accordingly, the 30-fold differences in aging rate among the mammalian species could be determined in part by peroxidation defense processes. This possibility was tested by measuring the spontaneous autoxidation of aerobically incubated brain and kidney tissue homogenates of 24 different mammalian species as a function of their maximum lifespan potential. Results show a statistically significant inverse correlation between both the rate of autoxidation and the amount of peroxidizable substrate with maximum lifespan potential. Kinetic analysis of the data indicates that the amount of peroxidizable substrate was the major factor determining the rate of autoxidation. For human tissues, antioxidants also appear to contribute to their unusually low sensitivity to peroxidation. These results support the hypothesis that aging may be caused in part by oxygen radicals initiating peroxidation reactions and that peroxidation defense processes are involved in governing the longevity of mammalian species. PMID- 3860824 TI - Immunocytochemical staining of estrogen receptor in paraffin sections of human breast cancer by use of monoclonal antibody: comparison with that in frozen sections. AB - Estrogen receptor (ER) in human breast cancer tissues was demonstrated in paraffin sections as well as in frozen sections by immunoperoxidase methods using monoclonal antibody (H222) against ER. The avidin-biotin-peroxidase complex method was used for the paraffin sections fixed in cold buffered formalin, and the peroxidase-antiperoxidase method was used for the fixed frozen sections. The results were compared with the ER content in the respective tumor tissue determined by dextran-coated charcoal assay. The specific staining for ER was located exclusively in the nuclei of cancer cells in both paraffin and frozen sections. Differences in the intensity and distribution of nuclear staining within a section were often observed, suggesting heterogeneity of the ER content of individual breast cancer cells. In 24 breast cancer tissues studied simultaneously by both paraffin and frozen section methods, 21 (88%) showed similar evaluation of the presence of ER. The results of immunocytochemical staining agreed with those of the dextran-coated charcoal assay in 89 (82%) of the 109 paraffin-sectioned tumor tissues and in 24 (86%) of the 28 frozen sectioned tissues, indicating that ER can be demonstrated immunocytochemically by use of paraffin as well as frozen sections. PMID- 3860825 TI - Phosphatidylcholine produced in rat synaptosomes by N-methylation is enriched in polyunsaturated fatty acids. AB - Rat brain synaptosomes contain an enzyme, phosphatidylethanolamine N methyltransferase (EC 2.1.1.17), that catalyzes the methylation of phosphatidylethanolamine to form its mono-, di-, and trimethyl (phosphatidylcholine) derivatives. Synaptosomal phosphatidylethanolamine is much richer in polyunsaturated fatty acids (43.4%) than is synaptosomal phosphatidylcholine (4.6%). It thus seemed possible that the phosphatidylcholine derived via the N-methylation of phosphatidylethanolamine might also be especially enriched in polyunsaturated fatty acids. To test this hypothesis, we examined the incorporation of [3H]methyl groups into various molecular species of phosphatidylcholine, by incubating rat synaptosomes for 10, 30, or 90 min in a medium containing S-adenosyl[methyl-3H]methionine. Phosphatidylcholine was extracted and separated from other lipids by TLC, after which its molecular species were isolated by argentation TLC (which distinguishes among the phospholipid molecules by the degree of unsaturation of their fatty acid moieties.) We found that approximately 65% of the [3H]methyl incorporated into phosphatidylcholine during the incubation period was present in the fraction associated with pentaene or hexaene fatty acids; an additional 30% was present in the tetraene fraction, while the remaining phosphatidylcholine radioactivity was distributed between the dienes and monoenes. Similar distributions were observed among synaptosomes incubated for 10 or 30 min; however, after 90 min the phosphatidyl[3H]choline contained proportionately less of the tetraenes. These observations indicate that neuronal phosphatidylcholine molecules formed via N methylation are especially richer in polyunsaturated fatty acids, and they raise the possibility that these molecules constitute a distinct pool with particular physiologic functions. PMID- 3860827 TI - Efficiency of utilization of various sources of energy for growth. AB - The relative efficiency of dietary sucrose, protein sources, and fats in depositing body protein and fat (total energy) was directly estimated in young rats by feeding graded levels of each as supplements to a fixed amount of a basal diet that was presumably adequate in all essential nutrients except for energy. Under these conditions, the net gain in total body energy was a linear function of the amount of supplement added and the data fulfill the criteria of a valid slope-ratio bioassay. The available energy measured by this technique for sucrose and protein were similar, as would be expected. Dietary fat, however, was a more efficient source of energy. Compared to sucrose with 3.94 kcal/g (1 cal = 4.184 J), the average potency of dietary fat was 11.1 kcal/g, or approximately 124% of the expected value of 9 kcal/g. Fat supplements increased the deposition of body fat even when total energy intake was severely limited. The Atwater value of 9 kcal per g of fat is not appropriate under these conditions and probably not under other conditions. PMID- 3860826 TI - Mouse-Torpedo hybrid acetylcholine receptors: functional homology does not equal sequence homology. AB - The nicotinic acetylcholine (AcCho) receptor (AcChoR) is a multisubunit protein complex of stoichiometry alpha 2 beta gamma delta. The several subunits show homology with each other within a given species; in addition, homology is found between analogous subunits between species. We have used the phage SP6 RNA polymerase transcription system to produce single-species RNA in vitro for various AcChoR subunits from cDNAs. Injection of an equimolar mixture of RNA for the alpha, beta, gamma, and delta subunits of Torpedo californica AcChoR into Xenopus oocytes results in the appearance of functional receptors in the oocyte membrane. No response to AcCho is detected when the beta or gamma subunit RNA is omitted, and a small response is seen when the delta subunit RNA is omitted. Replacement of Torpedo delta subunit RNA by the mouse BC3H-1 cell line AcChoR delta subunit RNA leads to the formation of functional receptors that show a 3-4 fold greater response to AcCho than does the full Torpedo complex. No response is seen when the mouse delta RNA replaces Torpedo gamma RNA. By amino acid homology profile comparisons, the mouse delta subunit appears to be moderately but not highly similar to the Torpedo delta subunit; the apparent similarity to the Torpedo gamma subunit is only slightly less. Therefore, the features of the primary sequence that determine the functional delta character of the mouse polypeptide are not revealed by simple homology comparisons. PMID- 3860828 TI - Preparations of homeostatic thymus hormone consist predominantly of histones 2A and 2B and suggest additional histone functions. AB - The two major constituents in preparations of the homeostatic thymus hormone (HTH) were purified. Amino acid sequence analysis showed that the components (HTH alpha and HTH beta) are identical to histones H2A and H2B, suggesting the possibility that histones might have hitherto unrecognized occurrence and functions. If the HTH activities are not ascribed to the two histones in the preparation, they could only be derived from minor constituents present in minimal amounts. Therefore, the histone structures were scrutinized for properties of relevance in relation to hormone activities and for similarities with thymic hormones. Similarities between COOH-terminal regions of histones H2A, H2B, and H3 were noticed, as well as some similarities between NH2-terminal regions of histones and parts of recognized thymus hormones and related proteins. Potential signals, resembling cleavage sites in prohormones, are present in the histone structures, and further correlations with recently discovered ubiquitin functions may explain molecular mechanisms for actions of the HTH preparations. None of the observations is significant by itself, but the combined results suggest the hypothesis of different relationships and functions, including hormone-like activities, for some histones. PMID- 3860829 TI - Inhibition of phosphoribosylaminoimidazolecarboxamide transformylase by methotrexate and dihydrofolic acid polyglutamates. AB - We report the enhanced inhibitory potency of methotrexate (MTX) polyglutamates and dihydrofolate pentaglutamate on the catalytic activity of phosphoribosylaminoimidazolecarboxamide (AICAR) transformylase purified from MCF 7 human breast cancer cells. In the present work, MTX (4-amino-10 methylpteroylglutamic acid) and dihydrofolate, both monoglutamates, were found to be weak competitive inhibitors of AICAR transformylase with Kis of 143 and 63 microM, respectively, and their inhibitory capacity was largely unaffected by the glutamated state of the folate cosubstrate. In contrast, MTX polyglutamates were found to be potent competitive inhibitors, with an approximately 10-fold increase in inhibitory potency with the addition of each glutamate group up to four (i.e., the pentaglutamate derivative). MTX tetra-and pentaglutamates were the most potent, with equivalent Kis of 5.6 X 10(-8) M or 2500-fold more potent than MTX. Dihydrofolate pentaglutamate was as potent an inhibitor as MTX pentaglutamate, with a Ki of 4.3 X 10(-8) M. The potent inhibitory effects demonstrated by the polyglutamate compounds when tested against the folate monoglutamate substrate were sharply curtailed when folate pentaglutamate was used as the substrate. MTX and dihydrofolate pentaglutamates were only 7- and 25-fold more potent than their monoglutamate counterparts under these conditions. A model depicting these complex interactions is postulated. These findings have significant implications regarding the mechanism of action of MTX. PMID- 3860830 TI - DNA supercoiling affects in vitro transcription of two maize chloroplast genes differently. AB - Two adjacent, divergently transcribed, developmentally regulated genes of the maize chloroplast chromosome have different superhelical density/transcriptional activation profiles when transcribed in vitro by the homologous DNA-dependent RNA polymerase. Promoter-specific transcription of the gene for the beta and epsilon subunits of coupling factor 1 (cf1BE) increases and plateaus from templates of increasing negative superhelicity, while transcription of the gene for ribulose bisphosphate carboxylase large subunit (rcL) rises and then falls. Maximal transcription from the two promoters occurs at different template negative superhelical densities and transcription of the two genes is stimulated to different degrees. The different superhelicity profiles alter the molar ratios of the two transcripts over an order of magnitude. Changes in DNA conformation represent one possible mechanism for the differential regulation of the genes. PMID- 3860831 TI - Increased rate of degradation of c-myc mRNA in interferon-treated Daudi cells. AB - The recent observation made in our laboratory that cellular myc (c-myc) mRNA has a very short half-life in a variety of normal and transformed human cells emphasized the potential importance of post-transcriptional regulation of c-myc gene expression. Jonak and Knight [Jonak, G. J. & Knight, E., Jr. (1984) Proc. Natl. Acad. Sci. USA 81, 1747-1750] have reported a selective reduction of c-myc mRNA accumulation in lymphoblastoid Daudi cells treated with human beta interferon. This provided a suitable situation in which to examine a possible action of negative modulators of c-myc expression at the level of mRNA stability. Our results confirm the observation by Jonak and Knight that c-myc mRNA level is depressed in cells treated with beta interferon and extend it to alpha 2 interferon. Furthermore, we now demonstrate that interferon has no effect on c myc transcription rate in isolated nuclei but rather reduces the half-life of its mRNA. Conversely, we show that it increases the level of HLA-A2 mRNA by stimulating its transcription. PMID- 3860832 TI - Kinetics of carbon monoxide binding to phenobarbital-induced cytochrome P-450 from rat liver microsomes: a simple bimolecular process. AB - The kinetics of carbon monoxide binding to phenobarbital-induced cytochrome P-450 (P-450PB) and to its enzymatically inactive form P-420PB have been investigated by both stopped-flow and flash-photolysis spectrophotometry. When the simultaneous presence of both forms of the enzyme is taken into account, the binding of CO to these two proteins can be described in terms of two bimolecular processes with rate constants of 4.5 X 10(6) M-1.S-1 and 4.7 X 10(5) M-1.S-1 for P-450PB and 1.7 X 10(7) M-1.S-1 and 1.5 X 10(6) M-1.S-1 for P-420PB. From kinetic studies of the binding of CO to P-450PB under different experimental conditions, investigations of the homogeneity of our P-450PB preparations, and comparative kinetic investigations of P-450s from different sources, we conclude that CO binding to reduced P-450PB is a simple bimolecular process and that the observed biphasic traces are due to heterogeneity of the proteins. This conclusion is in contrast with previous reports of complex reaction mechanisms for the binding of CO to P-450PB. Optical spectroscopy studies indicate the existence of an equilibrium between P-450PB and P-420PB, at least for the reduced carbonyl derivatives of the enzymes. The interconversion is strongly influenced by the aggregation state of the protein. Large differences between the CO binding properties of P-450PB and those of P-420PB are found. These are discussed in terms of possible effects of the proximal ligation state of the iron on heme reactivity. PMID- 3860833 TI - Molecular mechanism of codon recognition by tRNA species with modified uridine in the first position of the anticodon. AB - Proton NMR analyses have been made to elucidate the conformational characteristics of modified nucleotides as found in the first position of the anticodon of tRNA [derivatives of 5-methyl-2-thiouridine 5'-monophosphate (pxm5s2U) and derivatives of 5-hydroxyuridine 5'-monophosphate (pxo5U)]. In pxm5s2U, the C3'-endo form is extraordinarily more stable than the C2'-endo form for the ribose ring, because of the combined effects of the 2-thiocarbonyl group and the 5-substituent. By contrast, in pxo5U, the C2'-endo form is much more stable than the C3'-endo form, because of the interaction between the 5 substituent and the 5'-phosphate group. The enthalpy differences between the C2' endo form and the C3'-endo form have been obtained as 1.1, -0.7, and 0.1 kcal/mol (1 cal = 4.184 J) for pxm5s2U, pxo5U, and unmodified uridine 5'-monophosphate, respectively. These findings lead to the conclusion that xm5s2U in the first position of the anticodon exclusively takes the C3'-endo form to recognize adenosine (but not uridine) as the third letter of the codon, whereas xo5U takes the C2'-endo form as well as the C3'-endo form to recognize adenosine, guanosine, and uridine as the third letter of the codon on ribosome. Accordingly, the biological significance of such modifications of uridine to xm5s2U/xo5U is in the regulation of the conformational rigidity/flexibility in the first position of the anticodon so as to guarantee the correct and efficient translation of codons in protein biosynthesis. PMID- 3860834 TI - A predicted structure of calmodulin suggests an electrostatic basis for its function. AB - By using interactive computer graphics, two models for calmodulin have been constructed based on the structures of two functionally and structurally related proteins, intestinal calcium-binding protein and carp parvalbumin. The two models have been compared and contrasted to the parent proteins with respect to proportion of solvent-exposed hydrophobic residues, solvent-accessible surface area, and side-chain packing. Electrostatic potential surfaces generated for the models suggest a probable binding site for basic amphiphilic alpha-helical peptides located between the last E and F helices in the second domain of calmodulin. Both electrostatic and hydrophobic complementarity can contribute to stabilization of a peptide-protein complex in this region. PMID- 3860835 TI - Production and characterization of a monoclonal antibody to a human interferon induced double-stranded RNA-binding Mr 68,000 protein kinase. AB - One of the interferon-induced proteins thought to be involved in the antiviral effects of interferon is a double-stranded RNA-dependent protein kinase. This paper reports the development of a monoclonal antibody, 10A5, that recognizes a protein that co-migrates with the double-stranded RNA-dependent protein kinase at an approximate molecular weight of 68,000. Levels of this protein and of the protein kinase activity increase 3-fold on interferon treatment of T98G cells. The specificity of the monoclonal antibody was determined by ELISA, immunoblotting, and immunoprecipitation procedures. Furthermore, immunoaffinity chromatography of an interferon-induced T98G cell extract previously phosphorylated in the presence of double-stranded RNA and radiolabeled ATP resulted in the specific elution of a phosphorylated Mr 68,000 protein from the monoclonal antibody 10A5-Sepharose column. Monoclonal antibody 10A5 recognizes both native and denatured protein kinase, independent of double-stranded RNA binding or phosphorylation, and should therefore serve as a useful tool in analyzing the role of the double-stranded RNA-dependent protein kinase in the mechanism of interferon action. PMID- 3860836 TI - A partial cDNA clone for human apolipoprotein B. AB - A human liver cDNA library was screened for sequences coding for apolipoprotein B (apo B), the major protein of human low density lipoproteins. A mixture of synthetic oligonucleotides (26 bases long) coding for an amino acid sequence known to exist in apo B was used as a hybridization probe. A clone was identified that had a cDNA insert of 593 base pairs and that contained sequences coding for a peptide of 24 residues that had earlier been isolated from apo B by limited proteolysis. The entire nucleotide sequence of the cDNA insert consists of one open reading frame coding for 197 amino acids. Apo B-related RNAs were found in human liver, baboon liver, and the human hepatoma cell line HepG2. None were detected in placenta, simian virus 40 (SV40)-transformed fibroblasts, and a lymphoblastoid cell line. The length of the mature apo B mRNA was estimated to be 18 kb, enough to code for a protein with a molecular weight in the neighborhood of 500,000. PMID- 3860837 TI - Sea urchin metallothionein sequence: key to an evolutionary diversity. AB - The metallothioneins (MTs) constitute a diverse family of proteins, which are enriched in cysteines and bind heavy metals. The amino acid sequence of sea urchin MT has been obtained from its mRNA sequence and compared with MT sequences of various sources. A largely conserved sequence of 10 amino acids, the "central segment," is located near the center of the MT molecules of Neurospora, yeast, and Drosophila and the center of putative domains in mammalian and sea urchin MTs. The sea urchin carboxyl-terminal-half MT resembles the mammalian 9-cysteine amino-terminal MT domain I, both in the presence of this central segment and in the relative placement of cysteine residues. Conversely, the sea urchin amino terminal-half MT, containing 11 cysteines, resembles the mammalian carboxyl terminal MT domain II in its exclusive enrichment in vicinal cysteines. The reversed order of these sea urchin and mammalian MT halves appears to be just one aspect of a diversity based on the elaboration of structures containing the central segment. Still another variation in this diversity is the duplication of the central segment, apparent in Drosophila and crab MTs. PMID- 3860838 TI - Normal modes for specific motions of macromolecules: application to the hinge bending mode of lysozyme. AB - A method is presented for finding particular normal modes for large molecules such as proteins and nucleic acids. The method is based on an iterative approach that extracts eigenvectors of interest from the full second-derivative matrix. Application of the method to the interdomain (hinge-bending) motion of lysozyme yields a frequency of 3.6 cm-1. This is similar to the value obtained from earlier adiabatic-energy-minimization studies. Analysis of the mode shows that the relaxation associated with the hinge bending is highly delocalized; that is, the dihedral angle and energy changes are distributed over many residues, including some (e.g., Trp-28) that are distant from the cleft and hinge region. PMID- 3860839 TI - Protein states and proteinquakes. AB - After photodissociation of carbon monoxide bound to myoglobin, the protein relaxes to the deoxy equilibrium structure in a quake-like motion. Investigation of the proteinquake and of related intramolecular equilibrium motions shows that states and motions have a hierarchical glass-like structure. PMID- 3860840 TI - A contact-insensitive subpopulation in Syrian hamster cell cultures with a greater susceptibility to chemically induced neoplastic transformation. AB - We previously have identified a subpopulation of contact-insensitive (CS-) cells which lacks density-dependent inhibition of cell division in primary and low passage cultures of Syrian hamster embryonic (SHE) fibroblastic cells. Further, we have shown that the proportion of these CS- cells declines as a result of the stable phenotypic conversion of the CS- cells to contact-sensitive (CS+) cells. To determine whether these transient CS- cells are more sensitive to carcinogenic/mutagenic perturbation, the susceptibility to neoplastic transformation and somatic mutation induced by N-methyl-N'-nitro-N nitrosoguanidine (MNNG) was examined in clonally isolated cell cultures containing various proportions of CS- cells (0.02-4%). The frequencies of morphological transformation, focus formation, and neoplastic transformation showed a positive correlation to the proportion of CS- cells in the treated cultures. In contrast, the frequency of MNNG-induced somatic mutation at the Na+,K+-ATPase locus was similar among cultures varying in their proportion of CS- cells. Thus, there is a transient subpopulation of CS- cells in primary SHE cell cultures that is more susceptible to neoplastic transformation although equally susceptible to induced point mutation. This dissociation between somatic point mutation and neoplastic transformation indicates a fundamental difference in the nature of these two phenomena. A possible relationship between the propensity of CS- cells (versus CS+ cells) to carcinogen-induced neoplastic transformation and the state of differentiation of the CS- cells is discussed. PMID- 3860841 TI - Gene expression during terminal differentiation: dexamethasone suppression of inducer-mediated alpha 1- and beta maj-globin gene expression. AB - Previous studies demonstrated that hexamethylenebisacetamide (HMBA)-mediated murine erythroleukemia cell (MELC) commitment to terminal division could be suppressed by dexamethasone. A rapid (less than 2 hr) increase (step-up) in commitment to terminal cell division was observed if, after 60-70 hr in culture with inducer and steroid, MELC were transferred to medium with HMBA alone. This step-up commitment was not inhibited by actinomycin or cordycepin but was blocked by cycloheximide. In this study, we show that dexamethasone blocks HMBA-mediated activation of alpha 1- and beta maj-globin gene transcription but not the induced chromatin change characterized by appearance of DNase I-hypersensitive regions upstream from the 5' cap sites of the alpha 1- and beta maj-globin genes. A rapid (less than 2 hr) activation (step-up) of alpha 1-globin gene transcription was observed if, after 48-60 hr in culture with HMBA and dexamethasone, MELC were transferred to medium with HMBA alone. Activation of transcription of the beta maj-globin gene requires 12-24 hr of further culture. Cycloheximide inhibits step up transcription of both globin genes. Thus, dexamethasone blocks HMBA-mediated modulation of transcription of several nonlinked genes whose expression is altered in a coordinated manner during induced MELC terminal differentiation. Further, the steroid blocks at a late step, a step after that which is rate limiting to HMBA-mediated MELC differentiation. PMID- 3860842 TI - The cytoplasmic matrix: its volume and surface area and the diffusion of molecules through it. AB - In this work we look into the problem of why proteins, unlike small molecules, diffuse in the cytoplasm much more slowly than in aqueous solutions. In order to examine whether the cytoplasmic matrix could, by simple obstruction, retard protein diffusion to such an extent, we developed a method to measure semiquantitatively the fractional volume occupied by the cytoplasmic matrix (which includes the microfilaments, intermediate filaments, microtubules, and the microtrabeculae of the cytoplasmic matrix). This method yielded values in the range of only 16-21%. Thus, a more elaborate model is suggested in which the diffusing proteins bind and dissociate constantly from the surfaces in the cytoplasmic matrix. From this model, the diffusion coefficients and the measured values of the fractional volumes, we calculated the corresponding binding constants. These values indicate that most of the diffusing proteins are bound to the matrix at any given time, in spite of the possibility that they may bind and dissociate very rapidly. In addition, from our measurements, we estimate the surface area of structures within the cytoplasmic matrix to be in the range of 69,000-91,000 micron 2 per cell. PMID- 3860843 TI - Expression of autophosphorylating protein kinase 500 in normal and neoplastic rat cells. AB - Autophosphorylating protein kinase 500 (AUT-PK 500) is a unique serine protein kinase that was originally purified and characterized from the rat adrenocortical carcinoma. A specific RIA with an assay sensitivity of 10 ng (0.02 pmol) was developed for AUT-PK 500 and applied to normal, embryonic, fetal, neonatal, immortal, and neoplastic tissues and cultured cells. As compared to normal rat tissues, the expression of AUT-PK 500 is elevated 100-fold in spontaneously occurring adrenocortical carcinoma 494, 50- to 60-fold in four chemically induced, rapidly growing hepatomas, 30-fold in the chemically induced mammary carcinoma, 20-fold in the cultured hepatoma cell line, and 4-fold in the Rat I and Rat II established tissue culture cell lines. There was also a 5-fold increase in the enzyme when freshly cultured rat skin epithelial-like cells were established. Furthermore, in vivo studies showed that when the rat liver was chemically transformed into its premalignant altered foci, there was a 7-fold elevation of AUT-PK 500. Embryonic cells and fetal and neonatal tissues contained barely detectable (less than 0.22 micrograms/mg of protein) amounts of the protein kinase. These results suggest that AUT-PK 500 is not involved in the differentiation process during fetal development but may be elevated during early steps of carcinogenesis and is further elevated during later stages. PMID- 3860844 TI - Cell-type-specific pattern of myc protooncogene expression in developing human embryos. AB - The expression of viral oncogenes in cells transformed by acutely transforming retroviruses profoundly alters proliferation and differentiation in the target cell, suggesting that the cellular homologues of the viral oncogenes, the protooncogenes, have a role in normal cell proliferation and differentiation. To investigate the possible developmental role of protooncogenes in human embryogenesis, we have determined the spatial distribution of myc gene transcripts in early human embryos by using in situ hybridization of a labeled myc exon to thin sections. The results indicate a stage- and cell-type-specific regulation of c-myc gene expression in primarily epithelial cells of late first trimester embryos. Furthermore, the data suggest that the linkage between c-myc gene expression and cellular proliferation holds for only a restricted set of embryonic cells. PMID- 3860845 TI - Sequence and evolution of the human T-cell antigen receptor beta-chain genes. AB - We present the nucleotide sequences of the two genomic constant (C)-region gene segments, C beta 1 and C beta 2, encoding the beta chain of the human T-cell antigen receptor. The two C beta genes are organized identically to each other and to the corresponding mouse genes, both having four exons, whose boundaries were confirmed from the sequence of a C beta 2 cDNA clone from the T-cell line MOLT-4. The predicted amino acid sequences of human C beta 1 and C beta 2 differ at only five positions, which suggests that the proteins have very similar functions. This similarity is the result of strong nucleotide-sequence conservation in protein-coding regions, which extends to silent positions. A quantitative analysis of an alignment of the nucleotide sequences of the two human genes shows that whereas the 5' ends (including the first exon) are extremely homologous, the 3' ends are widely divergent, with other regions having intermediate levels of homology. Analysis of published data [Gascoigne, N.R.J., Chien, Y., Becker, D.M., Kavaler, J. & Davis, M.M. (1984) Nature (London) 310, 387-391] shows that the mouse C beta 1 and C beta 2 genes are also virtually identical in their first exons but more divergent in the remaining coding regions. Therefore, partial gene conversion events may have occurred during the evolution of both human and mouse C beta genes. PMID- 3860846 TI - Fusions of secreted proteins to alkaline phosphatase: an approach for studying protein secretion. AB - We have constructed a series of plasmids containing a modified form of the phoA gene of Escherichia coli K-12 that have general utility for studies of protein secretion. In these plasmids, the promoter and signal sequence-encoding region of the phoA gene have been deleted; thus, expression of the gene, giving rise to active alkaline phosphatase [orthophosphoric-monoester phosphohydrolase (alkaline optimum), EC 3.1.3.1], is absolutely dependent upon fusion in the correct reading frame to DNA containing a promoter, a translational start site, and a complete signal sequence-encoding region. Alkaline phosphatase, which is normally located in the periplasm of E. coli, is efficiently secreted to the periplasm when fused either to a signal sequence from another periplasmic protein, beta-lactamase (penicillin amido-beta-lactamhydrolase, EC 3.5.2.6), or to signal sequences from the outer membrane proteins LamB and OmpF. These heterologous signal sequences are processed during secretion. In the absence of a complete signal sequence, phosphatase becomes localized in the cytoplasm and is inactive. Phosphatase fusion proteins lacking up to 13 amino-terminal amino acids beyond the signal sequence show the same specific activity as that of the wild-type enzyme. However, a significant decrease in activity is seen when 39 or more amino terminal amino acids are deleted. Addition of approximately 150 amino acids from the enzyme beta-lactamase to the amino terminus of alkaline phosphatase has little effect on the specific activity of the enzyme. The ability to change the amino terminus of phosphatase without altering its activity makes the enzyme particularly useful for construction of protein fusions. The fact that phosphatase is designed for transport across the cytoplasmic membrane makes it an ideal tool for study of protein secretion. PMID- 3860848 TI - Identification of a unique tumor-specific antigen as a novel class I major histocompatibility molecule. AB - Cancers induced by physical or chemical carcinogens express tumor-specific antigens that are uniquely specific for any given tumor; therefore, there is a seemingly endless variety of these unique antigens. We have studied a UV-induced fibrosarcoma, designated 1591, to elucidate the obscure molecular nature and genetic origins of unique tumor-specific antigens. A monoclonal antibody raised against syngeneic 1591 tumor cells has unique tumor specificity. This tumor specific monoclonal antibody precipitated from the tumor a 45-kDa molecule associated with a 12-kDa molecule having the pI of beta2-microglobulin. This and other evidence indicated that the 1591 tumor expresses a novel class I molecule. A 1591 variant selected for the absence of binding to the monoclonal antibody lacked the novel class I MHC molecule as well as reactivity with cytotoxic T lymphocytes specific for the 1591 tumor. Furthermore, tumor cells bearing the antigen are rejected while variants that have lost the antigen grow progressively. Fourteen of 14 host-selected progressor tumor variants lost reactivity with the monoclonal antibody and provided further evidence that this novel class I molecule is a transplantation antigen on the parental 1591 tumor required for immune rejection. The identification of a unique tumor-specific antigen as a novel class I major histocompatibility complex gene product allows us to search for the possible genetic mechanisms involved and to explore further the role such molecules play in tumor immunity and malignancy. PMID- 3860847 TI - T-DNA border sequences required for crown gall tumorigenesis. AB - Similar 23-base-pair (bp) direct repeats occur at the ends of two adjacent but noncontiguous T-DNAs, TL and TR (left and right T-DNA), in the tumor-inducing plasmid pTiA6NC. Thus, three border repeats lie right and one lies left of TL, which carries the genes needed for tumor maintenance. To determine whether T-DNA transfer and integration (subsequently called T-DNA transmission) require sequences in addition to the 23-bp border repeat, we constructed a deletion removing the three potential TL right borders (the TL right border and both TR borders). Since this deletion severely attenuated virulence, we reintroduced restriction fragments containing the TL right border repeat at a new location to the right of TL and tested their ability to restore virulence. Fragments that carried the border repeat flanked by at least 67 bp of wild-type Ti plasmid sequences on the left and 1035 bp on the right restored virulence completely. Smaller fragments restored virulence significantly but not fully, even though the border repeat remained intact. Therefore, T-region sequences flanking the border repeat in the fully active fragments stimulated T-DNA integration. Fragments that restored virulence fully when inserted in the wild-type orientation stimulated virulence only slightly in the opposite orientation. Thus, the right border sequence promotes T-DNA transfer and integration best in one direction. PMID- 3860849 TI - Disialoganglioside GD3 on human melanoma serves as a relevant target antigen for monoclonal antibody-mediated tumor cytolysis. AB - Monoclonal antibody MB3.6 (IgG3) recognizes disialoganglioside GD3, which represents a major surface marker on most human melanoma cells. We demonstrate that this antibody effectively lyses four human melanoma cell lines expressing significant levels of GD3 on their surface by either of two mechanisms: antibody dependent cellular cytotoxicity (ADCC) or complement-mediated cytotoxicity. However, a melanoma cell line that expresses minimal levels of GD3 on 13% of the cells shows insignificant lysis by MB3.6 by either of these two mechanisms, suggesting that a threshold level of antigen expression may be required for effective in vitro cytolysis. In addition, monoclonal antibody (MAb) MB3.6 effectively inhibits establishment and growth of human melanoma tumors in the nude mouse when injected 24 hr after subcutaneous inoculation of tumor cells. Furthermore, MB3.6 produces specific regression of established melanoma tumors when injected 7 days after the subcutaneous inoculation of tumor cells. In contrast, tumor growth in animals injected with the melanoma cell line expressing minimal levels of GD3 was not affected by MAb MB3.6. These data indicate that once appropriate levels of the GD3 ganglioside are expressed on human melanoma cells, MAb MB3.6 can mediate tumor cell killing in vitro and in vivo and, thus, may prove useful for effective immunotherapy of human malignant melanoma. PMID- 3860850 TI - The regulation of DNA synthesis in quiescent lymphocytes by cytoplasmic inhibitors. AB - We previously have shown that proliferating lymphoid cells contain an extractable cytoplasmic protein that is capable of inducing DNA synthesis in isolated quiescent nuclei (activator of DNA replication, ADR). ADR is present in continuously proliferating (transformed) lymphoblastoid cell lines and in mitogen or interleukin 2-stimulated human peripheral blood leukocytes (PBL) but is not detectable in extracts from resting (unstimulated) PBL. In the present study, we investigated the possibility that quiescent PBL may contain a factor than can inhibit ADR activity. We found that unstimulated human PBL contain a heat-stable protein greater than or equal to 50,000 Da that is capable of suppressing the induction of DNA synthesis in isolated nuclei by ADR derived from both normal and neoplastic sources. The inhibitor was not detectable in freshly isolated PBL but appeared within the cells after a brief (2-6 hr) culture period. Depletion experiments revealed that the inhibitor was neither derived from nor dependent upon the macrophage component of the PBL cultures. These results suggest that one mechanism by which resting lymphocytes may maintain quiescence may involve the suppression of cytoplasmic mitogenic signals by intracellular inhibitors. In addition, the implications of our findings provide a possible explanation for the loss of growth control in abnormal proliferative states, such as neoplasia. PMID- 3860851 TI - Structural organization of the DR subregion of the human major histocompatibility complex. AB - Two clusters of overlapping cosmid and lambda phage clones comprising 205 kilobases (kb) have been isolated from the DR subregion of the human major histocompatibility complex from a DR4 haplotype. A single DR alpha and three DR beta genes were identified. In one cluster (135 kb), the DR alpha gene is 90 kb distant from the DR beta gene encoding a molecule that carries the MT3 serological specificity. In the second cluster (70 kb), the DR beta gene determining the DR4 specificity is located 22 kb apart from a DR beta pseudogene (DR beta psi). A 3- to 4-kb sequence located at the 5' end of the DR beta (MT3) gene is common to all three DR beta-chain genes. In addition, three more copies of this sequence are spaced between the DR alpha and the DR beta (MT3) genes in the first cluster and one of these, at least, is associated with a DR beta 1 exon, suggesting that additional genes could be encoded in this region and that multiple duplication events have led to its evolution. PMID- 3860852 TI - Duck hepatitis B virus DNA in liver and serum of Chinese ducks: integration of viral DNA in a hepatocellular carcinoma. AB - The presence of duck hepatitis B virus (DHBV) DNA in liver and serum and its state (integrated vs. free) were studied in 23 ducks from Chi-tung county in China by spot hybridization and Southern blot hybridization, respectively. In 16 of 23 (70%), DHBV DNA was detected in serum and/or in liver tissue. These infected ducks showed a variety of pathological changes including advanced chronic disease in the liver. In contrast, none of the virus-negative ducks had advanced hepatic changes. One DHBV DNA-seropositive duck had a large hepatocellular carcinoma. Southern blot analysis demonstrated integrated DHBV DNA in neoplastic tissue and abundant episomal DHBV DNA in non-neoplastic tissue of the liver. In one noninfected duck with a small adenoma, no viral DNA was detected in tumor or non-neoplastic tissue. The detection of integrated DHBV DNA in hepatocellular carcinoma suggests that DHBV behaves like human and woodchuck hepatitis viruses in relation to chronic liver disease and hepatocarcinogenesis. PMID- 3860853 TI - Effect of dietary ascorbic acid on the incidence of spontaneous mammary tumors in RIII mice. AB - A study of the effect of different amounts of L-ascorbic acid (vitamin C), between 0.076% and 8.3%, contained in the food has been carried out with ten groups of RIII mice (seven ascorbic acid and three control groups), with 50 mice in each group. With an increase in the amount of ascorbic acid there is a highly significant decrease in the first-order rate constant for appearance of the first spontaneous mammary tumor after the lag time to detection by palpation. There is also an increase in the lag time. The mean body weight and mean food intake were not significantly different for the seven ascorbic acid groups. Striking differences were observed between the 0.076% ascorbic acid and the control groups (which synthesize the vitamin): smaller food intake, decreased lag time, and increased rate constant of appearance of the first mammary tumor. This comparison cannot be made experimentally for guinea pigs and primates because the control groups would develop scurvy. PMID- 3860854 TI - Morphine and other opiates from beef brain and adrenal. AB - We describe nonpeptide opioids found in extracts of beef hypothalamus and adrenal, which are recognized by antisera raised against morphine. Four have been purified to homogeneity. One is morphine. The structures of the other three have not been determined yet. None of them are derived from morphine or normorphine after extraction from the tissues. It is not known whether the opiates described here are of endogenous or exogenous origin. PMID- 3860856 TI - Glycyl-L-glutamine, a precursor, and glycyl-L-glutamic acid, a neurotrophic factor for maintenance of acetylcholinesterase and butyrylcholinesterase in the preganglionically denervated superior cervical ganglion of the cat in vivo. AB - L. W. Haynes and M. E. Smith have reported [(1985) Biochem. Soc. Trans. 13, 174 175] that glycyl-L-glutamine (Gly-Gln) increases the A12 and G4 forms of acetylcholinesterase (AcChoEase) in cultured embryonic rat skeletal muscle. Since Gly-Gln meets the criteria established for the neurotrophic factor (NF) in extracts of central nervous system/sciatic nerves that maintains AcChoEase and butyrylcholinesterase (BtChoEase) in the denervated cat superior cervical ganglion (SCG) in vivo, it was tested by the latter procedure. Solutions of Gly Gln (10(-7)-10(-3) M) in 0.9% NaCl solution were infused for 24 hr via the right common carotid artery of cats with preganglionically denervated SCG, following ligation of the external carotid and lingual arteries. At 48 hr postdenervation, the AcChoEase and BtChoEase contents of the right SCG were within the range of similarly treated controls infused with 0.9% NaCl solution; the AcChoEase and BtChoEase contents of the left SCG, where the infused solutions arrived by way of a much more circuitous route, were significantly elevated at concentrations of Gly-Gln of 10(-5) M and higher. This suggested that the neurotrophic effect on the left SCG was produced by a metabolite of Gly-Gln. Accordingly, glycine, L glutamine, and glycyl-L-glutamic acid (Gly-Glu) were then tested. Glycine and L glutamine were inactive; Gly-Glu, 10(-6)-10(-5) M, exerted a significantly positive neurotrophic effect at both the right and left SCG; at 10(-4) M, the effect was absent. The method employed currently for preparation of extracts of SCG for assay of AcChoEase, BtChoEase, and protein contents (homogenization of scissor-minced ganglia in water) was compared with homogenization in molar NaCl/1% Triton X-100. Values obtained by the former procedure, in comparison with the latter, were 91% +/- 7% for AcChoEase and 83% +/- 7% for BtChoEase, expressed as substrate hydrolyzed per mg of protein per min. PMID- 3860855 TI - Brain and muscle nicotinic acetylcholine receptors are different but homologous proteins. AB - An alpha-bungarotoxin-binding protein was purified from chick optic lobe and brain by an improved method. Previous and present observations justify its designation as a brain nicotinic acetylcholine receptor (AcChoR). It contains subunits whose apparent molecular weights are somewhat larger than those of subunits of peripheral AcChoRs. The size of the optic lobe AcChoR complex is greater than that of the peripheral receptor when estimated from its sedimentation behavior. Brain AcChoR subunits can be specifically precipitated by a monoclonal antibody directed against chick muscle AcChoR. Amino-terminal amino acid sequence analysis was performed on AcChoR preparations and isolated subunits from the optic lobe and from the rest of the chick brain. The sequences obtained demonstrate that, at least for the lowest molecular weight component, the AcChoRs from different brain areas are identical and they are highly homologous to muscle AcChoR. It is concluded that the brain alpha-bungarotoxin-binding protein is indeed a nicotinic AcChoR and is encoded by a set of genes that is different from, but strongly related to, that for the muscle AcChoR. PMID- 3860857 TI - Cholinergic ventral forebrain grafts into the neocortex improve passive avoidance memory in a rat model of Alzheimer disease. AB - The memory dysfunction of Alzheimer disease has been associated with a cortical cholinergic deficiency and loss of cholinergic neurons of the nucleus basalis of Meynert. This cholinergic component of Alzheimer disease can be modeled in the rat by ibotenic acid lesions of the cholinergic nucleus basalis magnocellularis. The memory impairment caused by such unilateral lesions, as reflected in passive avoidance behavior, is reversed by grafts into the deafferented neocortex of embryonic neurons of the cholinergic ventral forebrain, but not by grafts of noncholinergic hippocampal cells. PMID- 3860858 TI - Pulse-wave propagation in an artery with leakage into small side branches. AB - Linear pulse propagation theory is applied to a network of elastic tubes. The network is specialized to one having a main branch with many low-admittance side branches. Continuum approximations and an asymptotic analysis of side-branch network input admittance reduce the original network to a tapered leaky tube. The outflow law is equivalent to distributed Windkessels. The conductance and time constant of the Windkessels are related to the geometry of the side-branch networks. Viscous effects are included in the theory. Asymptotic methods are used to determine the dispersion relation and waveform amplitude in the frequency domain. Periodic pressure and flow waveforms are computed using Fourier synthesis. PMID- 3860859 TI - A 1H NMR technique for observing metabolite signals in the spectrum of perfused liver. AB - We have developed a 1H NMR technique to selectively edit the spectrum of perfused liver for specific resonances of metabolites that occur in low concentration. The method employs selective DANTE pulses, which avoid exciting the water signal and at the same time control the J modulation effect in the homonuclear spin-echo experiment. By difference spectroscopy, we have suppressed the background signals from lipids and water and have resolved the CH3 resonance of lactate at 1.33 ppm. Moreover, the technique is highly selective and allows us to select the CH3 resonance of alanine at 1.47 ppm in the presence of the CH3 resonance of lactate at 1.33 ppm, even though the latter was much larger before editing. We have applied this technique to study the metabolic effect of ethanol in perfused mouse liver and have observed that the rate of formation of lactate from pyruvate is increased by a factor of 2.8 when ethanol is added. PMID- 3860860 TI - Selective alkylation of carcinogenic 9-anthryloxirane at the N-3 position of adenine in DNA. AB - Carcinogenic 9-anthryloxirane binds covalently to calf thymus DNA and poly(dA dT). Application of the technique for DNA sequence determination shows that acid cleavage of the modified DNA frees approximately half of the anthryl groups from the DNA. HPLC analysis indicates that an adenine adduct and the glycol derived from 9-anthryloxirane are the major acid-labile products. Spectroscopic analyses establish that the adenine adduct is the N-3 adduct of 9-anthryloxirane to adenine. Similar analyses of modified poly(dA-dT) indicate that the binding of 9 anthryloxirane takes place selectively at the N-3 position of adenine. The significance of this finding is briefly discussed. PMID- 3860861 TI - Possible depletion of a DNA repair enzyme in human lymphoma cells by subversive repair. AB - Mex+ human lymphoma cell lines contain O6-methylguanine-DNA methyltransferase, a DNA repair enzyme that undergoes suicide inactivation on interaction with its substrate. The cells are therefore competent to remove the alkylation lesion O6 methylguanine from their DNA. However, several repair-deficient lymphoma cell lines (Mex-) are also known. It is shown here that Mex+ cells can be converted temporarily to a Mex- phenotype by growth in nontoxic concentrations of free O6 methylguanine. The depletion of methyltransferase activity is not a result of O6 methylguanine incorporation into DNA and subsequent demethylation by the enzyme. It is proposed that O6-methylguanine is mistakenly incorporated into tRNA molecules by means of a post-transcriptional ribosyl transfer reaction. The demethylation of such bases in tRNA has been demonstrated by using bacterial and human DNA repair enzymes. The existence of such a subversive repair of a methylated base in tRNA raises the possibility of competition between DNA and RNA for cellular DNA repair enzymes. Furthermore, it is proposed that the known aberrant methylation of tRNA in certain transformed cells, together with subversive tRNA repair, could account for the Mex- phenotype. PMID- 3860862 TI - High specific activity enantiomerically enriched juvenile hormones: synthesis and binding assay. AB - A stereoselective total synthesis of chiral juvenile hormone I is described that allows stoichiometric introduction of two tritium atoms in the final step. Both optical antipodes of the pivotal epoxy alcohol intermediate were prepared in 95% enantiomeric excess by the Sharpless epoxidation of a (Z)-allylic alcohol. Elaboration of the hydroxy-methyl group to a vinyl group followed by selective homogeneous tritiation affords optically active juvenile hormone I analogs at 58 Ci/mmol. Competitive binding of the labeled 10R, 11S and 10S,11R enantiomers with unlabeled enantiomers to the hemolymph binding protein of Manduca sexta larvae was determined by using a dextran-coated charcoal assay. The natural 10R,11S enantiomer has twice the relative binding affinity of the 10S,11R enantiomer. The availability of such high specific activity optically pure hormones will contribute substantially to the search for high-affinity receptors for juvenile hormones in the nuclei of cells. Moreover, the chiral 12-hydroxy-(10R,11S)-epoxy intermediate allows modification of juvenile hormone for solid-phase biochemical and radioimmunochemical work without altering either the biologically important carbomethoxy or epoxy recognition sites. PMID- 3860864 TI - Protonic conductivity of hydrated lysozyme powders at megahertz frequencies. AB - Dielectric losses were measured for lysozyme powders of varied hydration level by a dielectric-gravimetric technique in the frequency range of 10 kHz to 10 MHz. The relaxation showed an isotope effect and pH dependence, indicating that the inferred conductivity is protonic. The transport process is likely restricted to the surface of individual macromolecules and involves shifting of protons between ionizable side chain groups of the protein. The time constant of the relaxation shows cooperativity in its seventh-order dependence on bound protons. The process develops in the hydration region critical for the onset of the catalytic properties of the enzyme. The binding of a substrate increases the relaxation time by a factor of 2. These observations suggest that the megahertz dispersion reflects behavior at the protein surface, specifically the cooperative channeling of proton flow through the active site, that may be of particular significance for the enzymatic and other functional properties of proteins. PMID- 3860863 TI - c-myc mRNA levels in the cell cycle change in mouse erythroleukemia cells following inducer treatment. AB - Several lines of evidence suggest that the c-myc protooncogene is involved in some aspect of cell division in mammalian cells. We have been investigating changes in the expression of c-myc mRNA in mouse erythroleukemia cells during chemically induced terminal erythroid differentiation. In vitro induction of erythroleukemia cell differentiation results in a switch from cells with unlimited proliferative capacity to cells that undergo a small number of terminal cell divisions. The level of c-myc mRNA changes rapidly following treatment with inducing agents. After a very rapid decline the mRNA is restored to pretreatment levels and then declines again. We have now measured the level of c-myc mRNA with respect to position in the cell cycle. Prior to inducer treatment the level of c myc mRNA is relatively constant throughout the cell cycle. However, when the mRNA is restored following treatment with hypoxanthine or hexamethylenebisacetamide, it is found primarily in cells in the G1 phase. Thus, treatment with inducers of differentiation leads to a change in the cell cycle regulation of c-myc mRNA. This change may be involved in the altered proliferative capacity of the cells that occurs during terminal differentiation. PMID- 3860865 TI - Experimental resolution of cooperative free energies for the ten ligation states of human hemoglobin. AB - Tetrameric human hemoglobin can assume ten molecular forms that differ in the number and configuration of ligands bound at the four heme sites. For each of these species we have determined the cooperative free energy--i.e., the deviation in free energy of ligation from that which would obtain for the same sites binding as independent alpha and beta subunits. These cooperative free energies were resolved from measurements on the dissociation into dimers of tetramers in which each subunit is either unligated (Fe2+ deoxy) or "ligated" by conversion into the cyanomet form (Fe3+ CN). The results indicate that each hemoglobin tetramer acts as a three-level molecular switch. During the course of ligation, the total cooperative free energy (6 kcal/mol over all four binding steps) is expended in two transitions that are synchronized with particular ligation steps. Whether a cooperative energy transition occurs or not depends upon how the ligation step changes both the number and configuration of ligated subunits. The hemoglobin tetramer is thus a "combinatorial switch." The finding of three distinct free energy levels for the ten ligation states suggests the existence of three major structural forms of the hemoglobin tetramer. PMID- 3860866 TI - Variable stoichiometry in active ion transport: theoretical analysis of physiological consequences. AB - Active ion transport systems with fixed stoichiometry are subject to a thermodynamic limit on the ion concentration gradients that they can generate and maintain, and their net rates of transport must inevitably decrease as this limit is approached. The capability to vary stoichiometry might thus be physiologically advantageous: a shift to lower stoichiometry (fewer ions pumped per reaction cycle) at increasing thermodynamic load could increase the limit on the supportable concentration gradient and could accelerate the rate of transport under high-load conditions. Here we present a theoretical and numerical analysis of this possibility, using the sarcoplasmic reticulum ATP-driven Ca pump as the example. It is easy to introduce alternate pathways into the reaction cycle for this system to shift the stoichiometry (Ca2+/ATP) from the normal value of 2:1 to 1:1, but it cannot be done without simultaneous generation of a pathway for uncoupled leak of Ca2+ across the membrane. This counteracts the advantageous effect of the change in transport stoichiometry and a physiologically useful rate acceleration cannot be obtained. This result is likely to be generally applicable to most active transport systems. PMID- 3860867 TI - Radiation inactivation of ricin occurs with transfer of destructive energy across a disulfide bridge. AB - The ionizing radiation sensitivity of ricin, a disulfide-linked heterodimeric protein, was studied as a model to determine the ability of disulfide bonds to transmit destructive energy. The radiation-dependent loss of A chain enzymatic activity after irradiation of either intact ricin or ricin in which the interchain disulfide bond was disrupted gave target sizes corresponding to the molecular size of dimeric ricin or monomeric A chain, respectively. These results clearly show that a disulfide bond can transmit destructive energy between protein subunits. PMID- 3860868 TI - Kinetic analysis of regulatory events in G1 leading to proliferation or quiescence of Swiss 3T3 cells. AB - Kinetic analysis of cellular response to serum deprivation or inhibition of protein synthesis was performed on Swiss 3T3 cells. Time-lapse cinematographic analysis of individual cells transiently exposed to serum-free medium (with or without the addition of purified growth factors) or cycloheximide enabled a detailed mapping of the magnitude and variability of cellular response in different parts of the cell cycle. In all cells, in all stages of the cell cycle, serum deprivation resulted in inhibition of protein synthesis, but only in postmitotic cells in the first 3-4 hr of G1 (here denoted the G1pm phase) did it produce cell-cycle arrest. During G1pm, the cells are highly dependent on the continuous presence of serum growth factors and a high level of protein synthesis in order to progress toward mitosis. A 1-hr exposure to serum-free medium or to cycloheximide was sufficient to force most G1pm cells into a state of quiescence (G0), from which the cells required 8 hr to return to G1pm. During G1pm the cells complete the growth factor-dependent processes leading to commitment for proliferation. Thereafter they enter the growth factor-independent pre-DNA synthetic part of G1 (here denoted G1ps). The commitment process in G1pm could be successfully completed in the presence of platelet-derived growth factor as the only supplied growth factor. Epidermal growth factor and insulin were insufficient for the completion of the commitment processes in G1pm, although they were able to temporarily prevent the G1pm cells from entering G0 during serum starvation. Under conditions optimal for proliferation, the cells complete the commitment processes in G1pm within a remarkably constant time period. Almost all cells in the population left G1pm and entered G1ps between the third and fourth hour after mitosis. The duration of G1ps, on the other hand, showed a large intercellular variability consistent with a transition-probability event. In fact, G1ps accounts for most of the variability in G1 and cell cycle time. PMID- 3860869 TI - Nanomolar concentrations of Bowman-Birk soybean protease inhibitor suppress x-ray induced transformation in vitro. AB - Experiments reported here indicate a crude soybean extract, if defatted with acetone, effectively blocks cell transformation in vitro. An active component of this crude extract is the Bowman-Birk trypsin and chymotrypsin inhibitor. The chymotrypsin-inhibitory region of the Bowman-Birk inhibitor is responsible for suppressing in vitro transformation. Another low molecular weight soybean trypsin inhibitor does not significantly suppress transformation. The Bowman-Birk inhibitor (i) has an irreversible effect on the transformation process, (ii) can suppress radiation-induced transformation even when added to cultures many days after the carcinogen exposure, and (iii) is effective in its ability to suppress transformation when present in the medium at a concentration as low as 0.125 nM. PMID- 3860870 TI - Chromosomal radiosensitivity during the G2 cell-cycle period of skin fibroblasts from individuals with familial cancer. AB - We reported previously that human cells after neoplastic transformation in culture had acquired an increased susceptibility to chromatid damage induced by x irradiation during the G2 phase of the cell cycle. Evidence suggested that this results from deficient DNA repair during G2 phase. Cells derived from human tumors also showed enhanced G2-phase chromosomal radiosensitivity. Furthermore, skin fibroblasts from individuals with genetic diseases predisposing to a high risk of cancer, including ataxia-telangiectasia, Bloom syndrome, Fanconi anemia, and xeroderma pigmentosum exhibited enhanced G2-phase chromosomal radiosensitivity. The present study shows that apparently normal skin fibroblasts from individuals with familial cancer--i.e., from families with a history of neoplastic disease--also exhibit enhanced G2-phase chromosomal radiosensitivity. This radiosensitivity appears, therefore, to be associated with both a genetic predisposition to cancer and a malignant neoplastic state. Furthermore, enhanced G2-phase chromosomal radiosensitivity may provide the basis for an assay to detect genetic susceptibility to cancer. PMID- 3860871 TI - N-myc can cooperate with ras to transform normal cells in culture. AB - N-myc, a cellular gene bearing homology to the c-myc protooncogene, is frequently amplified and overexpressed in a highly restricted set of related tumors, most notably neuroblastomas and retinoblastomas. We have examined the possibility that N-myc may play a causal role in the genesis of these tumors by defining its ability to transform primary cells in tissue culture. Using an N-myc expression construct capable of producing constitutively deregulated levels of full-length murine N-myc mRNA, we demonstrate that a deregulated N-myc gene can cooperate with the activated Ha-ras oncogene to cause tumorigenic conversion of normal embryonic fibroblasts in a manner indistinguishable from the deregulated c-myc oncogene. Cell lines established from N-myc/ras-transformed foci express high levels of the N-myc gene, and such lines are similar to c-myc/ras transformants in their ability to grow in soft agar and cause tumors in syngeneic rats. These results illustrate that N-myc does encode a c-myc-like transforming activity and that this transforming activity is not specific for the very restricted set of tumors in which N-myc is normally amplified or overexpressed. PMID- 3860872 TI - Molecular characterization of novel H-2 class I molecules expressed by a C3H UV induced fibrosarcoma. AB - Two novel class I-like molecules expressed on tumor 1591, a C3H UV-induced fibrosarcoma, are biochemically characterized using two-dimensional gel electrophoresis, a cross-blocking RIA, and tryptic peptide mapping. One novel molecule that reacts with CP28, a syngeneic tumor-specific monoclonal antibody, appears mosaic because it possesses characteristics of both Kk and Dk class I molecules. The second molecule is closely related but not identical to the bona fide Ld molecule expressed on BALB/c spleen. Thus 1591 expresses at least two novel class I molecules and is vigorously rejected by normal C3H mice, while a variant tumor derived from 1591, termed AS7, does not express these two class I molecules although it still expresses Kk and Dk. The significance of these observations to the immunobiology and genetics of the UV-induced fibrosarcoma system is discussed. Speculations on the role that the major histocompatibility complex may play in the immunosurveillance of neoplasms are also presented. PMID- 3860873 TI - The I region of the C57BL/10 mouse: characterization and physical linkage to H-2K of an SB beta-like class II pseudogene, psi A beta 3. AB - In the C57BL/10 mouse, 140 kilobases (kb) of the I region (I-Ab, I-Eb) were isolated as recombinant cosmids. The class II genes A beta 2, A beta 1, A alpha,E beta 1, E beta 2, and E alpha are located from centromere to telomere in a region of approximately equal to 110 kb, which shows that the I region in the b haplotype has a similar overall organization to those described for the d, k, and wr7 haplotypes. In addition to these genes, we have also isolated a class II gene, psi A beta 3, which is physically linked to the class I H-2K region, 75 kb telomeric to the H-2Kb gene. This orients the H-2K region on the genetic map with the H-2Kb gene being located toward the I region. The sequence of the beta 2 domain of psi A beta 3 is similar to the immunoglobulin-like domain of other class II genes. Interestingly, it shows 83% nucleotide homology to the human SB beta gene, the same homology that was seen previously between the immunoglobulin like exons of A beta 1 and DC beta and between E beta 1 and DR beta, respectively. It is likely, therefore, that psi A beta 3 represents a member of a third SB-like class II gene family present in addition to I-A and I-E genes and that the divergence of the SB family predates the speciation of rodents and primates. Comparison of the DNA sequence of the exon encoding the beta 2 domain of psi A beta 3 in the b or k haplotypes with functional class II genes shows that a deletion of eight nucleotides has occurred, such that the psi A beta 3 sequence cannot be translated into a functional class II protein. This suggests that psi A beta 3 is a pseudogene. PMID- 3860875 TI - Vasopressin mRNA in situ hybridization: localization and regulation studied with oligonucleotide cDNA probes in normal and Brattleboro rat hypothalamus. AB - Hybridizable vasopressin mRNA may be quantitatively localized in situ in sections from rat hypothalamus. Radiolabeled oligonucleotide cDNA probes, synthesized by chemical and enzymatic means, provide strong hybridization in zones known to contain vasopressin cell bodies. Multiple single-stranded 32P-, 35S-, or 3H labeled oligonucleotides demonstrate localized hybridization that increases as probes are lengthened from 8 to 75 bases. Competition studies, RNase experiments, anatomic localization, and use of multiple probes all support hybridization specificity. An approximate doubling of hybridizable mRNA in both supraoptic and paraventricular nuclei can be detected with dehydration of the animals. Hybridizable mRNA densities are virtually normal in hypothalamic nuclei of Brattleboro rats given free access to water. These methods can provide insight into regional mRNA dynamics and may reflect functional activity of peptidergic neurons. PMID- 3860874 TI - Enhanced complement-mediated lysis of type III paroxysmal nocturnal hemoglobinuria erythrocytes involves increased C9 binding and polymerization. AB - The interaction of terminal complement proteins (C5-C9) with normal erythrocytes and type III paroxysmal nocturnal hemoglobinuria erythrocytes (PNH-E) has been compared in terms of binding of the C5-9 complex, C9 polymerization, and C9 insertion into membranes. Complement components C5, C7, and C8 bind equally well to both types of erythrocytes, whereas the binding of C9 to PNH-E is 5-6 times greater than that to normal erythrocytes. The kinetics of C9 binding was compared with the kinetics of lysis for both types of cells under conditions leading to 100% lysis. There was a noticeable lag time between C9 binding and lysis of normal erythrocytes, but the lysis of PNH-E proceeded without a lag and the kinetics of lysis more closely paralleled C9 binding. The efficiency of C9 insertion was similar for both types of cells, but C9 polymerization was significantly enhanced on PNH-E. These data indicate that the enhanced susceptibility of type III PNH-E toward lysis by C5-9 can be correlated with abnormally high C9 binding and increased formation of poly(C9). PMID- 3860876 TI - Antiserum to lens antigens immunostains Muller glia cells in the neural retina. AB - Antiserum to a lens fraction enriched for alpha-crystallin selectively immunostains Muller glia cells in the neural retina of several vertebrate species. Also, in embryonic retina (chicken), this antiserum reacts with Muller cells and, at early stages of development, with their apparent precursors. Thus, antibodies to a lens product(s) detect a Muller glia cell marker that begins to be expressed very early in their ontogeny and can be useful in studies on differentiation, function, and pathologies of this cell type. PMID- 3860877 TI - Experimental transmission of a microsporidian pathogen from mosquitoes to an alternate copepod host. AB - Meiospores of a microsporidian parasite Amblyospora sp. (Protozoa: Microspora) from larval Aedes cantator mosquitoes were directly infectious to an alternate copepod host, Acanthocyclops vernalis (Arthropoda: Crustacea). Infections ranged from 6.7% to 60.0% in laboratory tests when meiospores and copepods were maintained together for 10-30 days in filtered water from the breeding site or in a balanced salt solution. Pathogen development takes place within host adipose tissue and is fatal to the copepod. The entire developmental sequence of this microsporidian in the copepod is unikaryotic and there is no ultrastructural evidence of a sexual cycle or a restoration of the diploid condition in the alternate host. Single uninucleated spores similar to those previously described for the genus Pyrotheca are formed. Results demonstrate that haploid meiospores of Amblyospora from mosquitoes have the function of transmitting the pathogen to another host and that members of this genus are polymorphic and have at least three distinct developmental cycles, each producing a different spore. PMID- 3860878 TI - Influence of dietary vitamin E and selenium on the ex-vivo synthesis of prostaglandin E2 in brain regions of young and old rats. AB - The potential for synthesis of prostaglandin E2 (PGE2) in cerebrum (CC), cerebellum (CM), mid-brain (MB) and brain stem (BS) was measured in 1 and 15 month old male F344 rats fed diets containing 0, 30, or 200 IU vitamin E (-E, E, +E, respectively) and 0.0, 0.1, or 0.2 ppm selenium (-Se, Se, +Se, respectively) for 8 or 20 weeks. Regardless of dietary treatments, the rank order of PGE2 synthesis was CC greater than CM greater than BS = MB in the young rats; CC greater than MB greater than BS = CM in the old rats; and CC greater than MB greater than BS greater than CM in the aged rats. PGE2 synthesis in all brain regions were significantly influenced by dietary treatments except CC. -E diets increased and +E diets decreased PGE2 production. Young rats were most susceptible to PGE2 alteration by vitamin E deficiency while old rats responded most markedly to supplementation. All brain regions showed decreases in their capacity to synthesize PGE2 with age, except MB where the opposite effect was seen. Dietary Se treatment had a minimal role in PGE2 synthesis in gross anatomical regions of brain. The degree to which PGE2 synthesis is affected is more dependent on dietary vitamin E level and tissue alpha-tocopherol content than on Se. CM and BS of aged rats appear to require more alpha-tocopherol to maintain steady state levels than other areas, thus the synthesis of PGE2 in these regions could be highly susceptible to alterations in dietary vitamin E. PMID- 3860879 TI - Antihypertensive activity and metabolic rate of prostaglandin E1 in surgical patients under general anesthesia. AB - Plasma immunoreactive prostaglandin E (iPGE) levels during PGE1 infusion for controlling systemic blood pressure were investigated. Differences in systemic blood pressure changes between halothane-nitrous oxide-oxygen (GOF) anesthesia groups and a neuroleptanesthesia (NLA) group during infusion in hypertensive surgical patients were compared. Plasma iPGE concentration increased from 200 +/- 30 pg/ml to 408 +/- 55 pg/ml within 5 minutes at the beginning of PGE1 infusion. After the cessation of PGE1 infusion, iPGE levels quickly returned to pre infusion levels, but blood pressure had not recovered to pre-infusion levels within 30 minutes. Blood pressure was well controlled with PGE1 infusion, but the pressure changes in GOF anesthesia group were significantly larger than those in the NLA group. The results suggest that the long anti-hypertensive action of PGE1 could be effective to control blood pressure in hypertensive surgical patients during and after surgery. PMID- 3860880 TI - A new radioimmunoassay for urinary thromboxane B2 with prior purification by high performance liquid chromatography. AB - In order to assess the role of the renally formed thromboxane A2 in humans, a new radioimmunoassay was developed for the determination of the urinary excretion of thromboxane B2, the stable metabolite of thromboxane A2. Urines were extracted with ethylacetate and thromboxane B2 was separated from the other primary prostaglandins by a reversed phase high performance liquid chromatography using water, acetonitrile and acetic acid (71:29:0.1) as mobile phase with an overall recovery of 44.1% +/- 1.3 (n = 42). The radioimmunoassay, performed on the fraction containing thromboxane B2 used a sensitive (less than 1pg) and highly specific antibody (final dilution: 1/460 800) that we have raised in the rabbit. The coefficient of variation was found lower than 5% in the usable part of the standard curve and the inter-assay reproducibility was at 7.3%. The 24-hour urinary excretion of thromboxane B2 measured in 26 healthy adults established at 109 +/- 12.9 ng/24h in men and at 99.5 +/- 9.2 ng/24 h in women. Therefore, it differed from that of the other prostaglandins by lower values devoid of sex related differences. PMID- 3860881 TI - Central administration of prostaglandin E2 facilitates while F2 alpha attenuates acute dependence upon morphine rats. AB - The effects of prostaglandin D2 (PGD2), E2 (PGE2), and F2 alpha (PGF2 alpha) on acute dependence on morphine were investigated. Five mature, male Long-Evans rats were trained to lever press for food reinforcement on a fixed-ratio 30 schedule (FR 30 behavior) and implanted with permanent guide cannulas with the tips of the cannulas in their right lateral brain ventricles. The experimental protocol began with a 45 minute behavioral session and brain infusion (1 microliter/minute of a solution containing 2.3 mM CaCl2 in 0.9% saline, ICV). Fifteen minutes into the session the rats were injected with 7.5 mg morphine/kg (IP). Beginning 2.25 hours later the brain infusion was reinitiated during a second 45 minute behavioral session which was interrupted after 15 minutes to inject 1.0 mg naloxone/kg (IP). In several experiments a dose of PG, which did not in-and-of-itself affect behavior, was added to the infusion medium. Prior to the naloxone injection it was ascertained that the behavioral effects of morphine had dissipated. The injection of naloxone or saline did not alter behavior of the rats while they were being infused with a PG or PG vehicle. Injection of naloxone, 3 hours after the injection of morphine, resulted in a significant suppression of FR 30 behavior (withdrawal). A dose of PGE2, which did not alter the initial suppressant action of morphine, potentiated the naloxone effect. A dose of PGF2 alpha, which likewise did not alter the initial action of morphine, antagonized the naloxone effect. However, a higher dose of PGF2 alpha which enhanced the initial morphine effect, caused an enhanced naloxone effect as well.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860882 TI - Smooth pursuit eye movements in subjects reporting physical anhedonia and perceptual aberrations. AB - Two studies were conducted to evaluate the ability of schizotypic subjects to track the horizontal movement of a light source across the face of an oscilloscope. In the first experiment, subjects were selected based on their scores on the Physical Anhedonia Scale (Chapman et al., 1976). The high anhedonic group was found to be significantly more variable than the low anhedonic group and contained three subjects with particularly deviant smooth pursuit eye movements (SPEM). In the second study, an additional group of schizotypic subjects who scored high on the Perceptual Aberration Scale (Chapman et al., 1978) was selected. In this study, eye-tracking records produced by both the anhedonic and perceptual aberration subjects were more variable than those recorded from control subjects, and once again, the most deviant records were produced by a small subgroup (n = 10) of the schizotypic subjects. These questionnaire-identified schizotypes with poor tracking ability might comprise a group of subjects especially vulnerable to a future schizophrenia-like disorder. PMID- 3860883 TI - Serum lithium minimum and diuresis. AB - Serum lithium was analyzed over a 24-hour period in patients who were receiving lithium in one daily dose. Linear regression was performed with urine volume as the independent variable and lithium dose, maximum serum lithium concentration. 12-hour serum lithium, minimum serum lithium, length of treatment, and age of patients as the dependent variables. Only minimum serum lithium and urine volume showed a good positive correlation. PMID- 3860884 TI - Mood-independent aberrancies in associative processes in bipolar affective disorder: an apparent stabilizing effect of lithium. AB - Forty-eight patients from an affective disorders clinic were tested twice with a word association test. They gave significantly fewer repetitions of common responses than did 29 normal controls. This difference was not related to subgroup diagnosis (bipolar I, bipolar II, unipolar, schizoaffective, and cyclothymic personality), to mood state at the time of testing, or to cycling frequency. The total number of repeated responses was directly correlated with serum lithium level (r = 0.44, p less than 0.01, especially in those judged good lithium responders (r = 0.71, p less than 0.05). This finding may reflect a normalizing effect of lithium on associative processes in affective illness. PMID- 3860885 TI - Increased urine volume in chronic schizophrenic patients. AB - Polydipsia and polyuria have a long association with schizophrenia. To assess the prevalence of polydipsia and polyuria in schizophrenia, urine volume was examined in medication-free chronic schizophrenic patients, normal controls, and nonschizophrenic patients. Mean urine volume was significantly higher in the schizophrenic patients (2319 +/- SD 2052 ml/24 hours) than in the other two groups (1054 +/- SD 471 ml/24 hours for nonschizophrenic patients and 1265 +/- SD 613 ml/24 hours for normals). Seven of 35 patients with schizophrenia but 0/7 nonschizophrenics had urine volumes greater than any normal control. Polyuria was associated with a good premorbid history and a positive neuroleptic response. Among polyuric patients, those with hyponatremia may represent a different, distinct subgroup. Neuroleptic treatment was associated with a further, significant increase in urine volume. Hence, polydipsia and polyuria appear to be relatively common in schizophrenia. PMID- 3860886 TI - Altered norepinephrine metabolism following long-term weight recovery in patients with anorexia nervosa. AB - This study evaluated the relationship between noradrenergic function and long term weight recovery in patients with anorexia nervosa. Eleven patients with long term weight maintenance (6 to 72 months) had lower plasma and cerebrospinal fluid concentrations of norepinephrine and 3-methoxy-4-hydroxy-phenylglycol than did healthy controls. Reduced noradrenergic activity may be associated with long-term stability of weight recovery in patients with anorexia nervosa. PMID- 3860887 TI - Tonic pain inhibits phasic pain: evoked cerebral potential correlates in man. AB - In a sample of 10 healthy volunteers phasic pain ratings and evoked cerebral potentials (EPs) elicited by brief electrical skin stimuli were investigated in periods before, during, and after contralateral tonic ischemia pain. In all subjects the phasic pain ratings and the late EP components P80-N150 and N150 P260 were depressed under concurrent tonic pain. The magnitude of the mean reduction (31%, 40%, and 26%) is comparable to morphine analgesia. The early EP components with latencies below 80 ms, which are considered to be correlates of mechanosensitivity, were not influenced. The findings of tonic pain inhibiting phasic pain are discussed on the basis of changes in attention as well as of pain specific physiological mechanisms like diffuse noxious inhibitory control. PMID- 3860888 TI - [Mathematical model of the sarcomagenic action of osteotropic alpha emitters]. AB - A model for osteosarcoma induction by alpha-emitters is proposed which is based on a well-known conception on the mechanisms of radiation-induced cancer, the processes of bone tissue regeneration, and the kinetics of cells subjected to carcinogenic risk. The main mathematical relations of the proposed model are presented. The dose-effect relationship of the model is compared with the epidemiological data available on the development of osteosarcoma in patients affected by long-lived radium isotopes. PMID- 3860889 TI - [Occlusal relation. 7]. PMID- 3860890 TI - [Occlusal relation. 8]. PMID- 3860892 TI - [The Robert Frederic Dumont orthobloc]. PMID- 3860891 TI - [Occlusal relation. 9]. PMID- 3860893 TI - [Beryllium (Be) and compounds]. PMID- 3860894 TI - [Occlusal relation. 10]. PMID- 3860895 TI - [Medicinal plants of long ago specific to dentistry]. PMID- 3860896 TI - Estramustine phosphate-reduced proliferation of murine and human cell lines and murine transplantable tumors. AB - The effect of estramustine phosphate (Estracyt) on the growth of murine aplastic mammary carcinoma, Ehrlich carcinoma, melanoma B-16, and five cell lines: L929 (mouse fibroblasts), BHK (baby hamster kidney), HeLa (human cervical carcinoma), HEp-2 (human laryngeal carcinoma), and K562 (human granulocytic leukemia) was investigated. In vivo, estramustine phosphate inhibits the growth of aplastic mammary carcinoma and Ehrlich carcinoma, but has no effect on melanoma B-16. In cultured aplastic mammary carcinoma, estramustine phosphate decreased the incorporation of 3H-thymidine into DNA. This drug inhibits the population growth of L929, BHK, HEp-2, and K562 cultures, but stimulates the growth of HeLa cells. We conclude that estramustine phosphate retards the growth of various cells, and that studies of other potential fields of application of the drug (aside from prostatic carcinoma) is justified. PMID- 3860897 TI - Proliferation of myometrial nerves in a patient with severe dysmenorrhea. PMID- 3860898 TI - Splenectomy for Felty's syndrome. PMID- 3860899 TI - The perceived needs of Rhode Island physicians concerning patient education programs. PMID- 3860900 TI - The significance of x-ray examinations of limb musculature in neuromuscular diseases with special regard to childhood diseases. AB - On the basis of examinations performed on 29 children suffering from various muscular diseases, the authors give a detailed discussion of the application, indication and advantages of muscles x-rays in diagnosing neuromuscular diseases. With the help of x-rays of the musculature an inside view can be obtained in vivo, in a non-invasive manner, of structural changes in the muscles, and the progress of the disease can be followed up objectively. The method opens up new possibilities of diagnosis and promotes a more thorough knowledge of the pathological processes. PMID- 3860901 TI - Circumferential continuity of perikymata in human dental enamel investigated by scanning electron microscopy. AB - Theoretically the perikymata may represent one of two possible configurations: closed circles or continuous spirals. In the present study one randomly selected perikyma groove in one randomly selected tooth (the mandibular first premolar of a 12-yr-old girl) was tracked around the circumference of the crown in the scanning electron microscope. It was found that the perikymata geometrically represented closed circles. The possibility of methodologic error was excluded. PMID- 3860902 TI - Tetracycline-impregnated enamel and dentin: duration of antimicrobial capacity. AB - The present study was done in order to examine the durability of the tetracycline induced antimicrobial capacity, and also to assess the reproducibility of the bacterial growth-inhibitory assay used. Standardized enamel and dentin specimens were impregnated in aqueous solutions of tetracycline HCl, oxytetracycline HCl or doxycycline HCl, rinsed in water, and stored dry for 200 days. Another series of specimens was impregnated in solutions of doxycycline HCl and then rinsed in tap water for varying periods up to 35 days. In addition, drug-impregnated specimens were used for reproducibility tests without storage or prolonged rinsing. Impregnated specimens were tested for antimicrobial capacity on agar plates seeded with S. sanguis. After 24 h aerobic incubation in 10% CO2 atmosphere, the plates were inspected and the diameter of the bacterial growth inhibition zones measured. The drug-impregnated enamel and dentin specimens consistently demonstrated growth-inhibitory capacity. The results of the reproducibility tests showed moderate intrasample and day-to-day variation. Two hundred days of dry storage or 35 days soaking in water reduced, but did not eliminate, the bacterial growth-inhibitory capacity of the impregnated dental specimens. The results show that a short-term exposure of dental hard tissues to tetracyclines may result in a long-lasting antibacterial capacity. PMID- 3860903 TI - Uptake of cadmium in developing rat teeth in organ culture. AB - Molar teeth from 9-day-old rats were cultured for 7 days in medium supplemented with 1 or 10 ppm Cd for 1 or 3 h or 7 days. After culture the Cd concentrations were measured separately from the mineralizing parts and the cell-containing tissues. The accumulation of Cd increased with the duration of treatment and the concentration used, being more intensive in the hard parts than the soft tissues of the teeth. PMID- 3860904 TI - Salivary counts of lactobacilli and Streptococcus mutans in caries prediction. AB - The aim of the study was to evaluate whether a combination of tests of salivary counts of lactobacilli and S. mutans would be of more value in caries prediction than each test used by itself. The study was done on 179 children 8 and 13 yr old. The mean caries increments in these children were 1.5 and 3.7 new caries lesions per year, respectively. The results showed that these tests or a combination of them are not specific in selecting caries risk patients. A combination of the two tests, however, was more efficient in selecting these patients than each test used by itself. PMID- 3860905 TI - Comparison of effect of SnF2 and NaF mouthrinses on caries incidence, salivary S. mutans and gingivitis in high caries prevalent adults. AB - The effect of SnF2 and NaF mouthrinses were compared in subjects initially selected because of their high caries prevalence and high levels of salivary S. mutans. Subjects rinsed twice a day with either SnF2 or NaF (200 ppm F-). Subjects in both groups continued to be caries active during the course of the study. However, at the first year examination subjects rinsing with SnF2 had less S. mutans/ml saliva, a lower caries incidence and less gingivitis. After 2 yr the S. mutans levels in the SnF2 rinsing group remained significantly less. Both caries incidence and gingivitis were lower in the SnF2 group after 2 yr but the difference was not significant. PMID- 3860906 TI - Metabolism of xylitol in dental plaque. AB - It has been reported previously that xylitol added to glucose used to challenge dental plaque in vivo caused a reduced acid formation. The aim of the present study was to approach the mechanism by which xylitol may affect glucose catabolism in plaque bacteria. Suspensions of freshly collected 4-day-old plaque bacteria were incubated, one batch with labeled xylitol, one with labeled glucose, in vitro at 37 degrees C. Samples of cells were taken out at time intervals, collected on paper discs and subjected to scintillation counting. It was observed that the plaque bacteria took up xylitol, the uptake increasing with incubation of more than 3-4 h, whereas the same cells took up glucose immediately. Cells which had taken up xylitol were extracted with boiling water, extracts concentrated and applied on thin-layer chromatography sheets. A radioactive component with mobility like xylitol-5-phosphate was isolated from the cell extracts, and also a component where labeled xylitol was associated with macromolecules. It is suggested that the accumulation of the metabolities within the cells inhibits glycolysis. PMID- 3860907 TI - Importance of teeth and tongue as possible receptor sites for chlorhexidine in relation to its clinical effect. AB - Teeth have previously been shown not to be of any major importance when quantitatively measuring the retention of chlorhexidine in the oral cavity. Only a few studies have examined the significance of the binding of chlorhexidine to the tongue in relation to its plaque inhibiting effect. The present study was therefore carried out to further examine these possible chlorhexidine receptor sites in the oral cavity in relation to its known antibacterial effect at the teeth surface. Two daily applications of chlorhexidine on the teeth in the right side of the maxilla, against a contralateral water control, both in combination with a sucrose challenge six times daily, showed no significant reduction of plaque formation when compared to an application of sucrose used alone. Two daily applications of chlorhexidine on the tongue, again combined with sucrose challenge, also showed no significant plaque inhibiting effect. The results obtained indicate that neither the teeth nor the tongue seem to be of major importance as receptor sites for chlorhexidine in the oral cavity as related to its observed clinical effect. PMID- 3860908 TI - Pulpal blood flow in immature permanent dog teeth after replantation. AB - Pulpal blood flow (PBF) was measuring by H2-gas clearance in 35 replanted (incisors and premolars) and 22 contralateral control dog teeth. The PBF measurements were taken 6, 10, 16, 21 and 28 days after replantation. At 6, 10 and 16 days after replantation there was no measurable blood flow in the coronal pulp of either replanted incisors or premolars. 21 days after replantation a considerable reduction in PBF was measured in all replanted teeth. On average, PBF was reduced to about one fifth of PBF in the simultaneously measured contralateral controls. Four weeks after replantation, a more than threefold increase in PBF was measured in premolars with two roots, while PBF in premolars with one root and incisors was consistently reduced to an average of 40% of the controls. The vascular pattern of the teeth 4 wk after replantation was identified with perfusion of silicon rubber. The measurements suggest that replanted multirooted teeth revascularize more easily than single-rooted teeth, and that pulpal repair is restored by a gradual replacement and proliferation of new tissue. PMID- 3860909 TI - Association between recurrent aphthous ulcers and tobacco habits. AB - The study is a complication of data on oral mucosal lesions collected among 20 333 people aged 15 yr and over. The aim was to calculate the correlation between the prevalence of recurrent aphthous ulcers and various tobacco habits. The prevalence of aphthous ulcers in the population was 17.7% including cases referring to episodes within the last 2 yr. There was a negative correlation between the prevalence of ulcers and tobacco habits. The suppression of ulcers was most evident for those groups smoking pipe or cigarettes without filter and only moderate for those using snuff. Further, heavy smokers had a lower frequency of ulcers than moderate smokers. PMID- 3860910 TI - Studies on the whole-body distribution of 14C-trithioparamethoxyphenylpropene in mice. AB - The study was undertaken to map the whole body distribution of trithioparamethoxyphenylpropene, TPMPP, a substance which is believed to stimulate salivary secretion. Two series of male and pregnant female mice were given 4.3 microCi 14C-TPMPP by gastric intubation. The animals were sacrificed at various intervals, embedded in CMC and frozen. Sections were taken from all levels and wholebody autoradiography performed. Four hours after administration the isotope was located in the intestines, liver, gall bladder, kidney and urinary bladder. High concentrations of the isotope persisted for 12 h with the exception of the kidney which showed decreasing concentrations after 4 h. The isotope was not found in the fetus or placenta. 24 h after administration no activity could be detected in any of the above mentioned organs. If TPMPP plays a role in salivary secretion this must be secondary as it was not found in the salivary glands, or nerve structures. PMID- 3860911 TI - Effect of xylitol-, sucrose-, and water-rinses on the composition of human palatine gland secretions. AB - The chemical composition of stimulated human palatine secretions (HPS) was studied after rinsing with aqueous solutions of sucrose or xylitol, or with water only. Stimulation with water was associated with increased concentration levels of protein. The levels of sialic acids (per mg protein) and the specific arylamidase activities were simultaneously increased, within the physiologic range. In contrast to a previous report, these results indicate that HPS does contain arylaminopeptidases the activity of which is strongly increased by Cl-. The Cl(-)-dependent activity was revealed when using N-L-arginyl-2-naphthylamide as substrate. The filter paper method used is recommended for collecting HPS for chemical analyses. In spite of the use of a relatively effective and versatile stimulation procedure, only one third of the subjects produced detectable HPS. Very poor secretion of HPS should perhaps be considered in subjects wearing total dentures. PMID- 3860912 TI - Comparative electromyographic study of bite plates and stabilization splints. AB - The object was to study any influence on the integrated electromyographic activity in the masseter and temporal muscles of two types of occlusal appliances. Seventeen healthy subjects wore a bite plate with a frontal plateau and a full coverage stabilization splint at night, each for 1 wk. The EMG activity was recorded without appliances in situ, in the rest position, and during gentle and maximum biting before and after the use of the different appliances. After use of the bite plate, the EMG activity was not significantly different at any tested level. After use of the splint, the activity in the rest position was significantly lower in the anterior and posterior parts of the temporal muscles. The EMG activity was significantly lower in the rest position in both parts of the temporal muscle after use of the splint than after use of the bite plate. In a control group of eight subjects in whom no appliances were used, the EMG activity did not change significantly between the initial and 1- or 5-wk recordings. Thus, the occlusal design of the appliances seems to be of importance for the influence on the EMG activity in the masticatory muscles, at least in healthy subjects. PMID- 3860913 TI - Diffusion of fluoride from alginate compared with other topical fluoride agents. AB - A two-chamber diffusion cell has been employed to monitor the diffusion of fluoride (F) from F-containing agents. The F which diffused from fluoridated alginate-base formula, F-containing gel (Gelution) and varnish (Duraphat) was determined within the first 6 or 20 min in unstirred conditions. A comparative analysis of the data showed that the alginate-base formula was efficient in releasing F. The results also indicate that the diffused F was not directly related to the total F content in the products or the bulkiness of the test specimens. It is obvious that the physicochemical properties of the products play a determining role in the release of F. PMID- 3860914 TI - Symposium on dyspepsia. Organic and functional disorders. Proceedings from an international symposium. Hyvinkaa, Finland, March 21-22, 1984. PMID- 3860915 TI - Biliary dyskinesia. AB - It has not been firmly established whether dysfunction of the sphincter of Oddi, biliary dyskinesia, exists as a distinct clinical entity. Improved diagnostic methods, such as ERCP and different manometric studies combined with provocation tests, have provided objective evidence that, in some patients with what is termed the postcholecystectomy syndrome, a spastic sphincter of Oddi is a cause of their complaints. Controlled randomised clinical studies are lacking, but previous results have shown that either operative or endoscopic papillotomy might be indicated in some patients with sphincter Oddi dyskinesia. PMID- 3860917 TI - Esophageal disorders in the etiology and pathophysiology of dyspepsia. AB - Dyspepsia may be caused by reflux esophagitis. We evaluated the symptoms of 45 patients aged 52 +/- 14 years who had a follow-up of 1 to 5 years. Endoscopy and histology demonstrated microscopic inflammation in 14, isolated mucosal defects in 12 and severe inflammation in 19 of the 45 patients. Belching was the leading symptom in patients with microscopic and severe esophagitis, heartburn in mild esophagitis. Upper abdominal pain, nausea and vomiting were present in 31%, 24% and 22% of the patients, respectively. Thus, reflux esophagitis is frequently accompanied by symptoms of dyspepsia which resemble those of other causes of dyspepsia. In contrast, disorders of gastric and intestinal motility may be associated with esophageal motor disturbances, particularly in gastric dysrhythmia, diabetic gastroenteropathy, irritable bowel syndrome, and idiopathic intestinal pseudo-obstruction. How much the esophagus contributes to the clinical symptomatology of dyspepsia awaits further elucidation. PMID- 3860916 TI - Bacterial overgrowth. AB - Different aspects of bacterial overgrowth in the small intestine are reviewed. The pathophysiological mechanisms involving both bacterial metabolism of dietary components and secretions and effects on the mucosal cells are discussed in more detail. The current therapy, surgical, medical and supportive, is outlined. PMID- 3860918 TI - Registration of pain in a psychological perspective. AB - Registration of pain must take into consideration the private nature of the pain experience while providing researcher and practitioner with measures which obtain satisfactory levels of compliance, reliability and sensitivity. A three-component model of pain based on social learning theory, comprised of physiological, cognitive/affective and overt behavioural dimensions has been shown to be a valuable tool in monitoring pain. Applications of the model show that it has satisfactory methodological characteristics when used in a study with continuous self-recording by patients, that it can accommodate discrepancies in physiological and affective dimensions and that it offers a variety of sensitive measures for evaluating treatment of pain. PMID- 3860919 TI - Endoscopic findings in patients with ulcer-like dyspepsia. AB - One hundred and sixty-seven patients in a single general practice who presented with ulcer-like dyspepsia were offered an upper gastrointestinal fibre endoscopy. Twenty-two patients had a peptic ulcer while only three had a gastric ulcer. One patient had a carcinoma of the cardia, one an adenocarcinoma in the body of the stomach and one a carcinoma at the ampulla of Vater. In another 55 patients the main findings at endoscopy were edema/reddening or erosions in the antral or duodenal mucosa. Endoscopic findings were normal in 46 patients. Malignancies were found only in patients over 50 years of age and only 4 ulcers were seen in patients under 40. The clinical findings of presence of night pain, pain relief after food intake and history of peptic ulcer were more common in patients with an existing peptic ulcer than in those with a normal endoscopy. PMID- 3860920 TI - Clinical significance of upper abdominal symptoms. AB - Upper abdominal symptoms are frequent in the healthy population. The clinical significance of upper abdominal symptoms appears to be slight when evaluated singly but more satisfactory when taken together. There is an urgent need for an improved data base of information with regard to the relationship between upper abdominal symptoms and disease. PMID- 3860921 TI - The Diagnosis and Therapy Survey October 1978-March 1983, health care consumption and current drug therapy in Sweden with respect to the clinical diagnosis of gastritis. AB - Demographic epidemiology, current drug therapy and the health care resources required by patients clinically considered to have gastritis were studied during a four and a half year period-October 1978 to March 1983. The investigation was based on data from the Diagnosis and Therapy Survey, an on-going nation-wide sample study covering all out-patient care in Sweden. Gastritis was found to account for 1.9% of all out-patient consultations and for 30% of those for gastrointestinal disorders. The corresponding figures for peptic ulcer disease were 0.2% and 4%, respectively. The estimated minimum number of annual consultations for gastritis was 47 per 1,000 inhabitants. The majority of the consultations were dealt with in general practice, where gastritis was the fifth most common diagnosis. Drug therapy was considered to be indicated in 92% of the consultations. Antacids were prescribed in 77%, anticholinergic/spasmolytic drugs in 36% and histamine H2-receptor antagonists in 4%. The clinical diagnosis of gastritis was found to be the major indication for antacids and anticholinergic drugs and accounted for a substantial proportion of H2-receptor antagonist prescriptions. The patient groups with gastritis and duodenal ulcer showed a similar age distribution, with a mean age of about 50 years. In the gastritis group, the two sexes were equally represented, but in the duodenal ulcer group there was a predominance of men. The results of the Diagnosis and Therapy Survey indicate that the patient group with symptoms traditionally denoted as gastritis in clinical practice constitutes a major health care problem in our community.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860922 TI - Social and economic effects of non-ulcer dyspepsia. AB - An attempt was made to estimate the total costs of non-ulcer dyspepsia (NUD) in Sweden by extracting information from different available sources. After extrapolation of figures from the in-patient register of the University Hospital in Uppsala to the whole of Sweden, the total annual expenditure for in-patient care was estimated to be 10.3 million SEK. Calculations of costs for out-patient care and drugs were based on data from a nation-wide sample survey, and the total expenses were estimated to be 197.5 million SEK and 60 million SEK, respectively. Among indirect social costs, economic losses due to death and early retirement were found to be comparatively moderate. Production loss due to short-term sick leave was by far the most dominant item among all social costs. In a study of 88 consecutive patients with NUD, it was revealed that the average NUD patient was responsible for 26 more days of lost production than the average employee. Thus, the total annual cost for short-term sick-leave was estimated to be 2,496 million SEK. The grand total of these calculations amounts to no less than 2,786 million SEK. Although affected by a considerable degree of uncertainty, the presented figures point to important economic consequences for society. PMID- 3860924 TI - Frontiers in gastroduodenal disease. Proceedings from a symposium. Goteborg, 5-6 April 1984. PMID- 3860925 TI - Operative treatment in massive peptic ulcer bleeding. AB - Guidelines are given for surgical intervention in patients with bleeding peptic ulcer. It is noted that the rate of operation for bleeding peptic ulcer has decreased in Goteborg from 1976 to 1983. The mortality in operated patients over 60 years remains unchanged at around 30%. The results of medical treatment have improved and the total mortality has consequently decreased from 23% to 11% in patients over 60 years. PMID- 3860926 TI - Effects of some opiates and vasoactive intestinal peptide (VIP) on duodenal surface epithelial bicarbonate secretion in the rat. AB - Bicarbonate secretion by 12 mm segments of duodenum just distal to the Brunner's glands area and devoid of pancreatic bicarbonate was titrated in situ in anaesthetised rats. The secretion increased significantly after intravenous injection of small amounts (20 ng/kg) of the endogenous opioid peptides beta endorphin and methionine enkephalin and maximal (approximately twofold) stimulation occurred after 200-500 ng/kg. Morphine (50 micrograms/kg) caused a similar stimulation and the mu-opiate antagonist naloxone prevented stimulation by morphine. The synthetic analogue [D-Ala2, D-Leu5]-enkephalin (500 ng/kg) which is an agonist at delta-opiate receptors, did not affect the secretion, further suggesting that stimulation is mediated by mu-receptors. VIP (5-100 micrograms/kg) increased the secretion dose-dependently to levels considerably higher than those observed with opiates, and pretreatment with atropine or indomethacin did not affect the response to VIP. The results suggest a role of endogenous opioid peptides and VIP in the humoral and/or nervous control of duodenal surface epithelial bicarbonate secretion and mucosal protection. PMID- 3860923 TI - The histology of the stomach in symptomatic patients after gastric surgery: a model to assess selective patterns of gastric mucosal injury. AB - We assessed selective patterns of histological injury in the gastric mucosa of 25 patients (12 Billroth II, 8 Billroth I, 5 vagotomy and pyloroplasty) with symptoms of alkaline reflux gastritis. Each patient had 12 biopsies taken from standardised sites. Histology was scored separately for surface epithelial changes and for inflammatory cells. The traditional grading of gastritis was also done using the categories of superficial and atrophic gastritis. The main histological changes were epithelial, especially in the pits (foveolae) of Billroth II patients. Although mild to moderate atrophic gastritis was present, the inflammatory cell density was only mild. Differences between surgery types for any given histological parameter became apparent only upon the analysis of regional changes within the stomach. Conventional grading of gastritis is based mainly on degrees of gland loss and thus is mainly of value to study chronic changes. However, the type of histological evaluation used here, with standardised biopsy sites, and separate scoring of epithelial and inflammatory changes is potentially more suitable to study shorter term changes as might occur with cytoprotective or damaging agents. PMID- 3860927 TI - Continuous measurement of gastric bicarbonate secretion in man under basal conditions and after sham feeding. PMID- 3860928 TI - Pathogenetic mechanisms in experimental gastric stress ulceration. AB - The studies reviewed suggest that the presence of luminal acid is essential for acute gastric stress ulceration to occur and that acid promotes ulceration by diffusing into the mucosa in an ulcerogenic situation. Disruption of the mucosal barrier by the presence of e.g. intragastric bile salts, aspirin, or ethanol increases the hydrogen ion back diffusion, thereby increasing the susceptibility of the mucosa to ulceration. Such a disruption is presumably needed for development of ulcerations in species with a "tight" gastric mucosa, such as the dog, the pig and man, whereas in species with a "leaky" mucosa, such as the rabbit or rat, ulceration occurs even without these agents. However, the response of the mucosa to hydrogen ions is not uniform. Luminal acidities and rates of hydrogen ion back diffusion that are normally harmless may in certain situations cause severe damage to the mucosa. Thus, the ability of the mucosa to withstand the influxing hydrogen ions is as important as the absolute amount of hydrogen ions diffusing into the mucosa. If the rate of hydrogen ion back diffusion exceeds the ability of the mucosa to dispose of hydrogen ions, acidification of the mucosa occurs, with resultant breakdown of the tissue. The main factors modulating the response of the mucosa to hydrogen ions are availability of bicarbonate in the mucosa and the mucosal blood flow. Bicarbonate contributes to mucosal protection through secretion by the epithelium to form an "alkaline" buffer layer at the epithelial surface, which seems to act as a "firstline" defence mechanism against the influxing hydrogen ions.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3860929 TI - Gastric mucosal resistance to a repeated ethanol insult. AB - The luminal gastric mucosa of anesthetised rats was uniformly exposed to 70% ethanol for 30-45 seconds. Ninety-six per cent of the superficial epithelium was immediately destroyed. The mucosa was allowed to heal for 60 minutes, during which time 85% of the superficial mucosa had re-epithelialised. A thick gelatinous layer of necrotic cells and mucosal exudate formed over the restituted epithelium. To determine whether the mucosa could withstand a second ethanol insult, the same stomachs were re-exposed to 70% ethanol for 30-45 seconds and fixed for quantitative light microscopy. Significant damage to the newly formed epithelium was observed only when the gelatinous layer was first removed and then followed by a second ethanol insult. This resulted in uniform superficial damage to 92% of the mucosal surface with accompanying vascular stasis. PMID- 3860930 TI - The structure of normal and regenerating rat oxyntic mucosa. AB - The morphology of the normal oxyntic mucosa is described. Different animal models for the production of gastric ulcers are briefly reviewed. In a series of rats, wounds were produced by cauterisation of the oxyntic mucosa. The mucosal regeneration process was then followed by morphometrical methods using light and electron microscopy. In particular, the regeneration of the acid-producing parietal cells was followed. Initially, the ulcer area is covered by primitive epithelial cells originating from the mucosa in the wound margin. These cells form the new gastric glands. With time, all specialised epithelial cell types which normally occur in the oxyntic mucosa can be recognised and, if regeneration is allowed to continue, the structure and function of these cells will normalise. However, the amount of glands and the number of parietal cells within the glands remain subnormal. PMID- 3860931 TI - Prevention of ulcer recurrence--medical vs surgical treatment. The surgeon's view. AB - The need for surgical intervention in duodenal ulcer disease will undoubtedly decrease in the years to come. Occasional failure of medical treatment and persistent doubts about the long-term safety of anti-ulcer drugs will continue to make operation the treatment of choice for some patients, however. Long-term medical treatment and surgery can be considered equally acceptable options for most patients. When operation is considered necessary, parietal cell vagotomy fits the requirements of a modern surgical method better than other techniques. The effective medical treatment now available makes postoperative recurrence of ulcer less important than before and lack of postoperative symptoms has replaced fear of recurrent ulceration as the main concern in the value judgement of both doctors and patients. PMID- 3860932 TI - Distribution of antibiotics into tissues and tissue fluids. Workshop held in Stockholm, Sweden, June 16, 1983. PMID- 3860933 TI - Antibiotic accumulation in human polymorphonuclear leucocytes and lymphocytes. AB - Human polymorphonuclear leucocytes and lymphocytes were incubated with 10 different radiolabelled antibiotics (10 micrograms/ml) for 2 hours. The ratio of cellular concentration to extracellular concentration of the drugs was determined after centrifugation. For beta-lactam antibiotics and gentamicin the ratios were less than 1.0. The ratios for doxycycline, erythromycin, fusidic acid and rifampicin were 13, 4.3, 7-10 and 2.5 respectively indicating a cellular accumulation of these drugs. Erythromycin, fusidic acid and rifampicin were rapidly released from the cells in antibiotic free medium, while doxycycline was partly irreversibly bound. PMID- 3860934 TI - Influence of surface area/volume ratio on the kinetics of antibiotics in different tissues and tissue fluids. PMID- 3860935 TI - Importance of drug-protein interactions and protein concentrations for antibiotic levels in serum and tissue fluid. PMID- 3860936 TI - Penetration of antibiotics into human peripheral lymph. PMID- 3860937 TI - Long-standing otitis media with effusion--a convenient model for the study of antibiotic penetration to respiratory tract secretions. AB - In long-standing otitis media with effusion, myringotomy with aspiration of the middle ear exsudate is an established therapeutical procedure, which can be performed under carefully planned conditions. This common disease thus offers convenient advantages for the study of antibiotic concentrations in the middle ear. This is exemplified by a review of studies with erythromycin, doxycycline and cefaclor. A delayed penetration into the middle ear was demonstrated for all these antibiotics, especially for erythromycin. The elimination from the middle ear was slower than from serum, at least with erythromycin and doxycycline. With these two antibiotics, the middle ear concentrations were close to the peak serum levels, with only small fluctuations between doses during a course of treatment. With cefaclor, peak middle ear concentrations were less than 40% of peak serum levels. By using this model, data from a natural disease in humans are obtained. Since the mucosa anywhere in the respiratory tract reacts in a uniform manner to an inflammatory stimulus, results from studies on long-standing otitis media with effusion can disclose some aspects on antibiotic pharmacokinetics in respiratory tract secretions in general. PMID- 3860938 TI - Changes in the oropharyngeal and colon microflora in relation to antimicrobial concentrations in saliva and faeces. AB - Phenoxymethylpenicillin, bacampicillin, clindamycin, erythromycin, doxycycline and tinidazole were given perorally for 7 days to a total of 56 subjects. Concentrations of antimicrobials in serum, saliva and faeces were determined daily, as were viable counts of different aerobic and anaerobic microorganisms in the oropharyngeal and colon microflora. Clindamycin, erythromycin, doxycycline and tinidazole were detected in saliva. Clindamycin, erythromycin and doxycycline were also detected in high concentrations in faeces. Phenoxymethylpenicillin, bacampicillin, tinidazole and doxycycline did only induce small changes in the oropharyngeal and colon microflora, while distinct suppression of anaerobic bacteria was observed in the oropharynx and colon when clindamycin was administered. Erythromycin decreased the numbers of aerobic bacteria in oropharynx and both aerobic and anaerobic bacteria in colon. Both clindamycin and erythromycin induced new colonization of the oropharynx and colon by potentially pathogenic Gram-negative enteric rods and fungi as well as toxin-producing clostridia. PMID- 3860939 TI - Antibiotic concentrations in intestinal mucosa. AB - The concentrations in the intestinal mucosa after the initial dose of cefoxitin, piperacillin and clindamycin have been studied. The antibiotics were given at the induction of anesthesia as prophylaxis to patients undergoing elective colorectal surgery. The concentrations of the antibiotics in serum and intestinal mucosa taken during the operation were determined by the microbiological agar diffusion method. Therapeutic concentrations in intestinal mucosa were maintained during the major part of the operation period. The mean mucosa/serum concentration ratios were for cefoxitin 0.4, for piperacillin 0.5 and for clindamycin 1.2. PMID- 3860940 TI - Penetration of antibiotics into brain tissue and brain abscesses. An experimental study in steroid treated rats. PMID- 3860941 TI - Antibiotic tissue concentrations: methodological aspects and interpretation of results. PMID- 3860942 TI - [Crowding of the lower anterior teeth: treatment with or without extraction?]. PMID- 3860943 TI - [Solubility stability and acid resistance of calcium hydroxide cavity lining materials]. PMID- 3860944 TI - [Effect of indomethacin on the development of periodontitis in relatively gnotobiotic rats]. PMID- 3860945 TI - [Sialadenoma papilliferum]. PMID- 3860946 TI - [P-10, a useful composite for the lateral teeth?]. PMID- 3860947 TI - [Reduction glossoplasty in macroglossia. Indications, technic, results]. PMID- 3860948 TI - [Indications for and the importance of computed tomography and nuclear magnetic resonance tomography in functional diseases of the stomatognathic system]. PMID- 3860949 TI - [Taurodontism studies in Senegal]. PMID- 3860950 TI - [Scanning electron optical analysis of the marginal space of in vivo incorporated shoulder crowns and inlays]. PMID- 3860951 TI - [Failures in periodontics]. PMID- 3860952 TI - Physiological effects of transforming growth factor in the newborn mouse. AB - Transforming growth factor-type alpha accelerated incisor eruption and eyelid opening in the newborn mouse and also retarded the growth rates of hair and body weight when administered in high dosage (0.7 to 4 micrograms per gram of body weight). The results of whole animal studies indicate that transforming growth factor-type alpha and epidermal growth factor do not differ significantly in these effects and suggest that transforming growth factor-type alpha may be important in immature animals. PMID- 3860953 TI - New biotech review board planned. PMID- 3860954 TI - The role of the c-mos gene in the 8;21 translocation in human acute myeloblastic leukemia. AB - The human c-mos proto-oncogene is located on chromosome 8 at band q22, close to the breakpoint in the t(8;21) (q22;q22) chromosome rearrangement. This translocation is associated with acute myeloblastic leukemia, subgroup M2. The c myc gene, another proto-oncogene, has been mapped to 8q24. The breakpoint at 8q22 separates these genes, as determined by in situ hybridization of c-mos and c-myc probes. The c-mos gene remains on the 8q-chromosome and the c-myc gene is translocated to the 21q+ chromosome. Southern blot analysis of DNA from bone marrow cells of four patients with this translocation showed no rearrangement of c-mos. PMID- 3860955 TI - [A histo-pathological and clinico-pathological study of pulp response to a posterior composite resin restorations]. PMID- 3860956 TI - [A histo-pathological and clinico-pathological study of pulp response to a microfilled resin restoration system using a bonding agent]. PMID- 3860957 TI - [Scanning electron microscopy studies on the incremental lines in the enamel of deciduous human teeth]. PMID- 3860958 TI - [The effect of bradykinin on free nitrogen compounds and energy production in the rat brain]. PMID- 3860959 TI - [Morphological changes in the maxillo-facial structures during orthodontic treatment. Changes in skeletal pattern, incisor axis and soft tissues and their correlations]. PMID- 3860960 TI - [A case of Plummer-Vinson syndrome]. PMID- 3860961 TI - Juxtacortical osteosarcoma: a radiologic and histologic spectrum. AB - Radiologic and pathologic findings were analyzed in four patients with parosteal osteosarcomas, three with periosteal osteosarcomas and one with a high-grade surface osteosarcoma. Plain film and histologic findings considered together are usually distinctive and permit differentiation of these tumors from each other and from other lesions with which they are frequently confused. Prognosis and management are determined by tumor extent and histologic grade. Computed tomography is more accurate than conventional tomography, angiography, and bone scintigraphy for preoperative determination of tumor extent and for assessing tumor relationships to the bone cortex and medullary cavity. Histologically, parosteal osteosarcomas are usually low-grade, while periosteal and high-grade surface osteosarcomas are generally high-grade tumors and have worse prognoses. High-grade surface osteosarcoma, which is indistinguishable in behavior and histology from classical medullary osteosarcoma, requires more aggressive surgical management than parosteal and periosteal osteosarcomas. PMID- 3860962 TI - Case report 318. Grade 2 osteoblastic osteosarcoma with elements of aneurysmal bone cyst. PMID- 3860963 TI - Establishment of mouse cell lines homozygous for temperature-sensitive mutation in catalase gene. AB - Contact-inhibited and-transformed fibroblast cell lines have been established from the homozygous C3H/CSb mutant mouse. These cell lines have low levels of a temperature-sensitive catalase enzyme activity. When compared to wild-type C3H cells, the catalase-deficient cells are markedly more sensitive to the toxicity of hydrogen peroxide. Furthermore, this cellular sensitivity to external hydrogen peroxide is temperature sensitive. These cell lines will be of use in the study of the role which catalase plays in the intracellular prevention of transformation induced by oxidative stress. PMID- 3860964 TI - Temperature-sensitive non-fusing myoblast variant and spontaneous revertant: isolation and characterization. AB - A stable, temperature-sensitive, non-fusing variant of the L6 rat myoblast cell line has been isolated following mild EMS-induced mutagenesis. At the permissive temperature (37 degrees C), the growth characteristics and developmental pattern of the tsA1 variant are essentially identical to those of the parental L6D0 line at either 37 degrees C or 40 degrees C. At the nonpermissive temperature (40 degrees C), the tsA1 variant grows normally but does not align, fuse, or synthesize detectable amounts of beta-tropomyosin or myosin LC2. A peptide corresponding to myosin LClemb is barely detectable. The temperature-sensitive period spans the interval from 4 to 72 h post-plating with a midpoint at approximately 40 h. Under standard culture conditions, commitment to terminal differentiation occurs between days 3 and 4, and alignment and fusion begin on days 4 and 5, respectively. Thus, the temperature-sensitive event occurs very early in the L6 developmental program. A spontaneous revertant of the temperature sensitive phenotype (tsA1 [R3]) exhibits recovery of the capacities to align, fuse, and synthesize the repertoire of muscle-specific proteins, suggesting that a single pleiotropic mutation in the tsA1 variant may regulate several stages in L6 myogenesis. PMID- 3860965 TI - Isolation of a mutant cell line derived from ICR 2A frog cells hypersensitive to the induction of non-dimer DNA damage by solar ultraviolet radiation. AB - A mutant cell line DRP 36, hypersensitive to nondimer DNA damage induced by exposure of cells to the Mylar-filtered solar ultraviolet (UV) radiation produced by a fluorescent sunlamp plus photoreactivating light (PRL) was isolated from the haploid ICR 2A frog cell line. The DO for mutant cells exposed to this solar UV source was 3.3 kJ/m2 compared with a DO of 7.3 kJ/m2 for the parental ICR 2A cells. In contrast, DRP 36 and ICR 2A cells exhibited similar levels of survival following 254-nm irradiation which causes the induction primarily of pyrimidine dimers. The cross-sensitivity to additional DNA damaging agents was examined, and it was determined that the DRP 36 cells are also hypersensitive to treatment with gamma-rays, ethyl methane sulfonate (EMS), cis-dichlorodiammine platinum (II) (DDP), and 4-nitroquinoline oxide (4-NQO) while exhibiting normal sensitivity to L-phenylalanine mustard (L-PAM), 1,3-bis-(2-chloroethyl)-1-nitrosourea (BCNU) and mitomycin C (MMC). PMID- 3860966 TI - Characterization of pyrazofurin-resistant HeLa cells with amplification of UMP synthase gene. AB - Three different phenotypes have been characterized in HeLa cells that have been selected for resistance to pyrazofurin, a potent inhibitor of the de novo pyrimidine biosynthetic enzyme UMP synthase. All of the resistant cell lines had a coordinate increase in UMP synthase activity, UMP synthase-specific mRNA, and UMP synthase gene sequences. In one of the resistant cell lines, the amplification of the UMP synthase gene is associated with a stable phenotype. There is no decrease in UMP synthase gene copy number or UMP synthase activity when these cells are grown for over six months in the absence of pyrazofurin. Another resistant cell line that has a higher level of gene amplification when grown in the presence of pyrazofurin loses its elevated UMP synthase activity and amplified DNA sequences with growth in the absence of the drug. A third cell line that possessed a moderate level of UMP synthase gene amplification is tenfold more resistant to pyrazofurin than the cell line with the highest level of amplification. The extraordinary level of resistance is due to a decreased level of activity for the enzyme adenosine kinase that is required for the conversion of pyrazofurin to its inhibitory monophosphate form. PMID- 3860967 TI - Assignment of dioxin-inducible cytochrome P-450 gene family to Chinese hamster chromosome 4. AB - The 2,3,7,8-tetrachlorodibenzo-p-dioxin-inducible cytochrome P-450 gene family (P1-450 and P3-450 in the C57BL/6N mouse) has recently been localized to mouse chromosome 9. In the present study, HindIII-digested DNA from Chinese hamster, mouse, and 20 Chinese hamster X mouse somatic cell hybrids and subclones segregating hamster chromosomes was probed with the mouse P1-450 and P3-450 full length cDNA clones. Hamster P-450 gene fragments (6.0 and 7.4 kb) were assigned to Chinese hamster chromosome 4. These data are consistent with linkage conservation among these two P-450 sequences and four other loci on mouse chromosome 9 that map to hamster chromosome 4. PMID- 3860969 TI - Interferon-beta-related DNA on human chromosome 4. AB - A DNA subclone (pPE-4000) derived from the lambda B4 interferon-beta-related human genomic DNA clone was used as a probe in blot-hybridization experiments of DNA from a panel of human-rodent somatic cell hybrids containing overlapping subsets of human chromosomes. The DNA hybridization experiments showed that the lambda B4 IFN-beta locus is localized to human chromosome 4. A provisional regional assignment to 4q12-qter was also obtained. Thus available hybridization data implicate human chromosomes 2, 4, and 9 in the human IFN-beta system while the available biological data also implicated human chromosome 5. PMID- 3860968 TI - Proximity of thyroglobulin and c-myc genes on human chromosome 8. AB - The human thyroglobulin structural gene (TG) was mapped to the long arm of chromosome 8 by blot hydridization of a TG cDNA probe to DNA from 21 human X mouse somatic cell hybrids containing overlapping subsets of human chromosomes. In situ hybridization of the TG probe to metaphase chromosomes from a karyotypically normal human lymphoblastoid cell line, JS, localized the TG gene to within the region 8q23----q24.3. Thus, the TG and c-myc genes map to the same chromosome band in normal human cells. In a human colon carcinoma cell line (COLO 320 DM) which contains amplified c-myc, the TG gene is not amplified and hence it lies outside the amplification domain. PMID- 3860970 TI - [Prosthesis designed for upper right 1st molar and 1st and 2d premolar defects]. PMID- 3860971 TI - [Prosthesis designed for upper central incisor defects]. PMID- 3860972 TI - [Prosthesis designed for upper central incisors and left lateral incisor defects]. PMID- 3860973 TI - [From check-up to diagnosis: preparatory steps in prosthodontics]. PMID- 3860974 TI - [Free-end prosthesis for defects of the lower right 1st and 2d molar and 2d premolar and lower left 1st and 2d molars]. PMID- 3860975 TI - [Prosthesis for malocclusion: a case with the remaining upper right 2d molar, upper left 1st and 2d premolar and 1st molar and the lower right 1st premolar, canine and central and lateral incisors]. PMID- 3860976 TI - [Prosthesis for crossbite: a case with the remaining upper right 1st molar, premolars and canine and the lower left canine, premolars and 1st and 2d molars]. PMID- 3860977 TI - [Prosthesis for crossbite: a case with the remaining upper right quadrant, upper left 1st premolar and 2d molar and lower 1st premolars, canines and incisors and left 2d premolar]. PMID- 3860978 TI - [Prosthesis for the partially edentulous jaw: a case with the remaining upper right canine and the upper left premolars]. PMID- 3860979 TI - [Prosthesis for partially edentulous jaw: a case with the remaining upper right 2d premolar and canine]. PMID- 3860980 TI - [Metal denture bases]. PMID- 3860981 TI - [Abrasion of the tooth and its management]. PMID- 3860982 TI - [Management of protrusive teeth]. PMID- 3860983 TI - [2 cases of treatment of advanced periodontal disease--2]. PMID- 3860984 TI - [Etiology and prevention of complete denture sores]. PMID- 3860985 TI - [Prosthodontics and better prognosis--3]. PMID- 3860987 TI - [Anesthetic technics in pedodontics]. PMID- 3860986 TI - [Polysulfone composite resin, Biore, for crown and bridge restorations]. PMID- 3860988 TI - [Dental health services in Shiojiri City]. PMID- 3860989 TI - [Hepatitis B virus infection]. PMID- 3860990 TI - [Prevention of transmission of viral diseases among dentists]. PMID- 3860991 TI - [Use of bacampicillin in acute infections in the mouth]. PMID- 3860992 TI - Emergency surgical treatment for patients with acute leukemia. AB - A series of 21 emergency operations performed upon 19 patients with acute leukemia was reviewed. The most common procedure performed was laparotomy for intra-abdominal emergency complications which was associated with a high mortality (58 per cent), especially in those patients with leukemia not in remission (78 per cent). Patients who underwent extra-abdominal procedures, even with leukemia not in remission, had a low mortality (14 per cent). All five patients who were operated upon while in remission survived. The most accurate prognostic signs associated with postoperative mortality were abnormal white blood cell counts and development of leukemia not in remission. Early surgical intervention is advised combined with intensive supportive care to improve survival rates of patients with acute leukemia who undergo emergency surgical procedures. PMID- 3860993 TI - Absorbed doses at varying tube voltage in lateral cephalography. AB - Absorbed doses in organs of special interest from lateral cephalography were measured by thermoluminescence dosimetry in a tissue equivalent phantom head. The radiographic examination was performed in a standardized manner by using a carefully collimated radiation field and a near-focus dodger. The actual tube voltages ranged from 63-127 kVp. The absorbed dose was described as a function of tube voltage. In all measurement sites the absorbed dose decreased with increasing tube voltage. This reduction was most obvious in the low tube voltage range. From the results a lowest recommendable tube voltage was given for the different measurement sites varying from approximately 75 kVp (thyroid region) to approximately 100 kVp (parotid region). A high tube voltage was found to be important for a low absorbed dose in different organs in lateral cephalography. PMID- 3860994 TI - Oral galvanism and mandibular dysfunction. AB - Sixty-two patients were referred to the university dental clinics in Goteborg for examination and treatment of presumed oral galvanism. Thirty of the patients, with an average age of 47 years, were found to suffer from various degrees of mandibular dysfunction. In these 30 patients the most commonly reported symptom was headache, which was present in 67 per cent of the individuals, while mandibular dysfunction was the most common diagnosis. Nineteen patients improved or recovered completely after counselling and/or treatment. Occlusal splints, alone or in combination with other therapeutic methods, were given to 80 per cent of the patients. It is emphasised that patients with putative oral galvanism must be given proper care, including examination of the masticatory system and treatment of diagnosed functional disturbances. PMID- 3860995 TI - Dietary habits and dental health in 6-year-old Finnish immigrant children in Sweden. AB - A survey, including a clinical and radiographic examination for dental health, was carried out on 19 6-year-old Finnish immigrant children and 24 Swedish children in a Stockholm suburb. The parents were interviewed about their children's and their own dietary habits. The study showed generally worse dietary habits in the Finnish than in Swedish group. Both the children and the parents in the Finnish group had more food intakes per day than the Swedes. The Finnish children had a significantly more frequent consumption of cariologically unsuitable products such as soft-drinks, sweets, lozenges and chewing-gum than the Swedish children and a majority of the Finnish parents took sugar in their coffee and/or tea. The Finnish children had also more filled and carious teeth. The study revealed a great need for both general dietary and dental health information in the studied group of Finnish immigrant families with pre schoolchildren. PMID- 3860996 TI - Computerized registration of epidemiological data from intraoral radiographs. AB - Software was developed for graphic registration of epidemiological dental data from intraoral radiographs. The measured variables included marginal bone level in relation to tooth and root length as well as proximal caries and restoration areas. Caries and peridontitis progress nowadays slowly in large populations. Registration methods must, therefore, offer high precision. The hard and software were first tested. After that the method's reliability or precision was studied. The precision of measuring marginal bone level as a per cent of total tooth or root length was found to vary between 0.3-4.3. The corresponding precision of measuring a caries area in relation to the whole crown area was 1.4%. Precision was also divided into its components and analysed in more detail. All registered tooth variables except the angle between the proximal marginal bone and the root surface gave satisfactory results indicating good reliability. PMID- 3860997 TI - [Ultrastructure of blast cells in patients with myeloblastic, monoblastic and myelomonoblastic leukemia]. AB - Electron microscopy was applied to study and compare blast cells in 7 patients with acute myeloblastic, 4 with acute monoblastic and 11 patients with acute myelomonoblastic leukemias. Three morphological types of blast cells are described for acute myeloblastic leukemia and 2 types of blast cells for acute monoblastic leukemia. In acute myelomonoblastic leukemia, no specific cells characteristic but for this disease pattern were detected while the main tumor substrate included the different types of blast cells described for acute myeloblastic and monoblastic leukemias. A patients also manifests the predominance of the same type of blast cells, with no combination of different types. Ultrastructure of blast cells in acute non-lymphoblastic leukemias and therapeutic approaches are discussed. PMID- 3860998 TI - [Use of cytosar (cytosine arabinoside) in the control of herpetic complications in patients with acute leukemia and lymphogranulomatosis]. AB - The authors report the use of the cytostatic drug cytosar in the control of herpetic complications in patients with acute leukemia and lymphogranulomatosis. A distinct effect was obtained as a result of intravenous drip of cytosar in a dose of 0.03-0.05 g for 2 days. It is desirable that cytosar therapy may be instituted within the first days of the development of herpetic infection. PMID- 3860999 TI - [Acute basophilic leukemia]. PMID- 3861000 TI - Expression of HLA-A and -B antigens on differentiating U-937 cells. AB - Cells from the human immature monocytoid cell line U-937 were induced with 12-O Tetradecanoyl-phorbol-13-acetate (TPA) to differentiate towards macrophage-like cells. The expression of HLA-antigens during differentiation was examined with a panel of monoclonal antibodies directed against monomorphic and polymorphic determinants. Class II antigens could be detected neither on uninduced nor on TPA induced U-937 cells. While the expression of HLA-A3 did not change significantly during differentiation, the "supertypic" specificities HLA-Bw4 and Bw6 as well as the "private" specificity HLA-B18 could be detected only on a drastically decreased number of cells after 4 days of exposure to TPA. This may imply a selective loss of HLA-B molecules from the cell membrane and therefore a separate regulatory control of HLA-A and -B antigens. PMID- 3861001 TI - Secondary Sjogren's syndrome and chromosome six markers. AB - Patients with Sjogren's syndrome (SS) in association with either Rheumatoid Arthritis (RA), Systemic Lupus Erythematosus (SLE) or Sclerodactyly were tested for HLA-A, B and Dr antigens and the phenotypes of the 4th component of complement (CA). Significant associations were identified between HLA-Bw62, Dr4, C4B2.9, C4A8 and females with SS-RA. The MHC antigen frequencies noted for secondary Sjogren's syndrome differed from those reported for their respective primary diseases and the implications of these observations are discussed. PMID- 3861002 TI - THP-ADM in the treatment of acute promyelocytic leukemia. AB - Three patients, diagnosed as acute promyelocytic leukemia and disseminated intravascular coagulation (DIC), were treated with THP-ADM in combination with heparin and intensive platelet transfusion. Two of the three patients achieved complete remission. The remaining one patient also responded favorably to the therapy and achieved marrow aplasia, and significant improvement of coagulopathy was observed after chemotherapy. However, he suddenly died of intractable congestive cardiac disturbance ten days after the completion of THP-ADM induction therapy. The mechanism of this unique delayed anthracycline-associated cardiotoxicity was discussed. PMID- 3861003 TI - An analysis of factors responsible for resorption of embryos in cisplatin-treated rats. AB - Pregnant rats were injected ip with 4 or 7 mg cisplatin/kg on gestation day (gd) 6 to study its effect on embryonal resorption. Serum concentrations of prolactin, luteinizing hormone (LH), and progesterone were determined by radioimmunoassay in pregnant rats, and related to the effects of cisplatin on the maintenance of pregnancy. The nocturnal prolactin surge on gd 9 was abolished in cisplatin treated rats. Within 3 days after drug injection, LH concentrations decreased 39%, while serum progesterone decreased 63% by Day 10. A histochemical study of 20 alpha-hydroxysteroid dehydrogenase activity revealed no enzyme activity by gd 10. It is proposed that the cause of cisplatin-related embryonal resorption in rats may be due to decreases in hormone concentrations observed after drug treatment. PMID- 3861004 TI - Autoimmune mechanisms in inflammatory eye disease. AB - This paper summarises the principal immunopathological mechanisms which may underlie ocular inflammation and draws attention to how autoimmune reactions may be regulated by idiotypic networks of the immune system. The study of autoimmunity in inflammatory eye disease is illustrated by our current investigations of retinal vasculitis in man and of experimental autoimmune uveoretinitis in rodents where three lines of evidence indicate that immune complex formation may be a compensatory host response to the development of antiretinal autoimmunity. In discussing immunological implications of these results we suggest that retinal inflammation in antiretinal autoimmunity is limited by a protective anti-idiotypic antibody response and that retinal disease arises when this compensatory response is improperly balanced. The clinical implications of this reasoning include the identification of patients at risk of relapse of ocular disease and the development of therapeutic methods for restoring an imbalanced anti-idiotypic autoimmune response towards normality. PMID- 3861005 TI - The effect of change in intraocular pressure on the natural history of glaucoma: lowering intraocular pressure in glaucoma can result in improvement of visual fields. AB - This paper reports a direct relationship between change in the level of intraocular pressure and the visual field of patients with glaucoma: improvement in the visual field with improvement of intraocular pressure and deterioration of visual field with deterioration of intraocular pressure. The documentation of change in visual field or optic disc (worse or better) is the most certain criterion of control. Unless improvement is noted to accompany lowering of intraocular pressure, adequacy of control cannot, with certainty, be assured. This concept is based on an analysis of 77 patients having trabeculectomy and 195 patients having argon laser trabeculoplasty without alteration of the optical system of the eye, in whom the visual field was determined with Octopus computerised perimetry before and after the pressure altering event. PMID- 3861006 TI - Uncomplicated bilateral intraocular lens implants: intracapsular and extracapsular results in the same patient. AB - Forty-one patients (82 eyes) underwent bilateral intraocular lens implantation. The first eye of each patient received an anterior chamber lens with intracapsular extraction while the second eye received a posterior chamber lens with extracapsular extraction. Ninety-two per cent of the eyes having intracapsular extraction and 95 per cent of the eyes undergoing extracapsular extraction obtained 20/40 vision or better when surgery was free of intraoperative complications. Statistical difference between groups was not significant. The most common complication was chronic cystoid macular oedema, the incidence of which did not differ between groups. Using patients as their own controls, there does not appear to be a statistically significant difference in results or complications between cataract extraction performed by an intracapsular technique and anterior chamber lens versus an extracapsular procedure with posterior chamber lens. PMID- 3861007 TI - Complications of anterior chamber intraocular lenses and their effect on the endothelium. PMID- 3861008 TI - Reparative epiretinal fibrosis after diabetic vitrectomy. AB - Closed microsurgery for the haemorrhagic and tractional sequelae of proliferative diabetic retinopathy is frequently successful in restoring and maintaining useful vision. Severe complications may arise, however, including the reproliferation of cellular membranes on the retinal surface with subsequent retinal distortion or redetachment. The clinical and histopathological features of such reparative epiretinal fibrosis are presented and methods of prevention are discussed. PMID- 3861009 TI - Retinal detachment in retinitis pigmentosa. AB - Three cases of retinal detachment occurring in patients with retinitis pigmentosa are presented and three previously reported cases reviewed. All the detachments were rhegmatogenous. One patient had a horseshoe tear, one had oral bay tears, two had dialyses, one a giant tear and in one case the break was not specified. Three patients were high myopes. All the patients were young males. The five operable cases all responded satisfactorily to conventional surgery. Histologically apparent adhesions between retinal pigment epithelium and neuroretina have been described in advanced cases of retinitis pigmentosa in older patients and may not be present in younger patients with less advanced disease. Until these adhesions occur patients with retinitis pigmentosa may have no additional protection against retinal detachment. PMID- 3861010 TI - A comparison of various methods of treatment of amblyopia. A block study. AB - The results of conventional occlusion, minimal occlusion and CAM treatment in the management of amblyopia have been investigated in two disparate populations from Cambridge, England and Ankara, Turkey. Each of these methods of treatment was equally effective as an initial therapy. However, if one form of therapy was ineffective or only partially successful, then further improvement can be obtained by using an alternative method. A quarter of the patients showed no improvement in vision at all despite vigorous and active treatment. It is suggested that minimal occlusion should be the first method of treatment but if this fails either or both conventional occlusion and CAM treatment should be used and therapy should not be abandoned until all these methods have been attempted. PMID- 3861011 TI - Ophthalmic findings in very low birth weight children. AB - Recent advances in neonatal intensive care have led to a much improved survival rate in very low birth weight infants (under 1,500 g). A group of such children was examined and found to have a low incidence of serious visual or general handicap, but severe retrolental fibroplasia (RLF) affects a significant number. PMID- 3861012 TI - The correction of refractive errors with polysulfone corneal inlays. A new frontier to be explored? PMID- 3861013 TI - Polysulfone corneal inlays. Adverse reactions: a preliminary report. AB - The use of polysulfone to manufacture a lens for insertion into the corneal stroma to correct large refractive errors has been described. Two patients are presented in whom the procedure has been associated with significant loss of vision due to development of secondary changes in the cornea. PMID- 3861014 TI - [Lipid peroxides content in human gingiva in periodontal disease]. PMID- 3861015 TI - [Effect of dietary consistency on the growth and development of the craniofacial complex in rats]. PMID- 3861016 TI - [An autoradiographic study of the mouse periodontal tissues during tooth movement]. PMID- 3861017 TI - [Daily changes in the oral microflora of neonatal rats administered tetracycline]. PMID- 3861018 TI - [Dental health screening using the quantity of transmitted light from laser beams]. PMID- 3861019 TI - [2 cases of granuloma pyogenicum caused by irritation of ill-filling dentures]. PMID- 3861020 TI - [Histopathological study of the damage and repair processes in the bone surrounding bone screws]. PMID- 3861021 TI - [Dimensional accuracy of heat-cured resins for denture bases]. PMID- 3861022 TI - Clinical toxicity of 4'-epi-doxorubicin (epirubicin). AB - Epirubicin is a new derivative of doxorubicin characterized by an improved spectrum of activity and a better therapeutic index. At equimolar doses and in comparative studies, epirubicin proved to induce less acute toxicity than doxorubicin, in particular less vomiting, hair loss and myelotoxicity. While giving a comparable response rate in randomized breast cancer studies, epirubicin also proved to be less cardiotoxic than doxorubicin. The reduced potential for cardiac toxicity of epirubicin versus doxorubicin has been shown both by functional assessment (radionuclide cinecardioangiography) and by histopathologic evaluation (endomyocardial biopsies) at equally myelosuppressive doses or at equal doses (equimolar). The lessened cardiotoxicity of epirubicin versus doxorubicin can be explained by the different pharmacokinetic and metabolic properties of these two agents: epirubicin has been found to have a more rapid pharmacokinetic plasma clearance and an additional metabolic pathway (unique glucuronidation). PMID- 3861023 TI - Comparison of lipid peroxidation and myocardial damage induced by adriamycin and 4'-epiadriamycin in mice. AB - Adriamycin (ADM) and 4'-epiadriamycin (4'-ADM) were given to mice in a single dose of 15 mg/kg body weight (i.p.). Twenty-five mice were alloted to 3 groups. One group (Group I; n = 8) was given ADM; another group (Group II; n = 9) was similarly treated with 4'-ADM, and a control group (n = 8) received an equivalent volume of 0.9% NaCl solution. Mice were sacrificed 4 days after the described treatment. A complete autopsy was carried out in each animal. Hydroperoxide initiated chemiluminescence and malonaldehyde formation were measured in mouse heart homogenates. Control mice showed a maximal photoemission of 52 +/- 2 (X 10( 3)) (mean values +/- S.E.M.) cpm/mg protein and a formation of 20 +/- 4 nmol malonaldehyde/g organ after a 2 hr-incubation. The ADM-treated mice showed a 24% enhanced hydroperoxide-initiated photoemission and a 370% increased malonaldehyde formation. The 4'-ADM-treated mice showed a 15% increased hydroperoxide stimulated chemiluminescence and an 85% increased malonaldehyde formation. Vitamin A (5000 IU), vitamin E (85 IU) and vitamins A and E (same doses as before) given as a single dose i.p. 1 day before doxorubicin administration were able to decrease the hydroperoxide-initiated chemiluminescence by 24%, 26% and 44%, respectively. Microscopically, only scarce isolated microvacuolated subendocardial fibers were found in the ADM-treated animals. Our data showing that 4'-ADM lacks a statistically significant effect in increasing heart peroxidation as compared to ADM may explain its lower myocardial toxicity. PMID- 3861024 TI - [Effect of prethrombin I and prostaglandin E2 on thrombin-stimulated aggregation of rat platelets]. AB - Effect of inactive precursor of alpha-thrombin--prethrombin (Pre-I) and prostaglandin (PGE2) on aggregation of washed rat platelets induced by alpha thrombin was studied. Pre-I inhibited dose-dependently the alpha-thrombin-induced platelet aggregation. K1 values for Pre-I of high and low affinity binding sites were equal to 0.9.10(-8) M and 0.56.10(-6) M, respectively. PGE2 inhibited the alpha-thrombin-induced aggregation after simultaneous addition and within 5 and 15 min of incubation with PGE2. Preincubation of platelets with alpha-thrombin within 15 min prevented the PGE2-induced aggregation but preincubation of platelets with Pre-I within 15 min did not influence the platelet aggregation, induced by PGE2. PMID- 3861026 TI - [A specific rosette formation method in assessing the immunological status of acute leukemia patients]. AB - The paper deals with the evaluation of immunologic vigor in 88 patients suffering acute lymphoblastic leukemia. It involved a modified test of specific rosette formation of blood-circulating lymphocytes and those of the bone marrow with erythrocytes bearing leukemia cell extracts. The highest levels of rosette forming lymphocytes were registered in the acute period prior to treatment and in recurrence. The said levels decreased gradually following chemoimmunotherapy, falling to nil in complete remission. Patients in whom the treatment had failed revealed no changes in lymphocyte response. The control group (healthy subjects and cases of nonmalignant hematologic pathology) showed levels of rosette-forming lymphocytes similar to those in acute lymphoblastic leukemia patients in remission. PMID- 3861025 TI - [Hemosorption combined with intensive measures in hemoblastoses]. AB - The results of 24 applications of hemosorption procedure in 19 cases of acute leukemia, chronic myeloleukemia, chronic lymphocytic leukemia and multiple myeloma are discussed. Hemosorption in conjunction with infusions of albumin, hemodesum, rheopolyglucinum, saline and glucose solutions may be recommended for severe and extremely severe toxemia. A high efficiency of the procedure application at different stages of leukemia development in cases of toxemia syndrome, toxico-allergic hepatitis and sepsis was observed. PMID- 3861027 TI - [IKO-GM-1 monoclonal antibodies in the diagnosis of acute nonlymphoblastic leukemias]. AB - The paper deals with the analysis of the phenotype of blastic cells obtained from patients suffering various subtypes (FAB-classification) of acute nonlymphoblastic leukemia. The study used monoclonal IKO-GM-1 antibodies complementary to an antigen common to myeloid and macrophagal cells. Also, previously described monoclonal IKO-11, IKO-1, IKO-02 and IKO-10 antibodies were employed. Application of the above antibodies appeared to provide information necessary for differentiating between myeloblastic and monoblastic leukemia. Complex immunologic and cytochemical investigations are required for identifying leukemia subtypes. PMID- 3861028 TI - [Value of the current methods of ambulatory treatment and occupational rehabilitation of patients with lymphocytic and myelocytic leukemia]. PMID- 3861029 TI - Chronic obstructive pulmonary disease: evaluation, management. PMID- 3861030 TI - Hypersensitivity pneumonitis. PMID- 3861031 TI - Reconstruction of the cervical esophagus with the right colon. PMID- 3861032 TI - Plasminogen (PLG): a useful genetic marker for paternity examinations. AB - The genetically determined polymorphism of plasminogen (PLG) was analyzed by isoelectric focusing on polyacrylamide gels. For analysis neuraminidase pretreated sera were used. PLG was developed functionally by activation with urokinase and subsequent lysis of casein in an agar overlay. In a random sample of 957 unrelated healthy individuals from Southern Germany, three common phenotypes, PLG1, 2-1, and 2, and five rare variants were found. The allele frequencies were: PLG*1 = 0.7174, PLG*2 = 0.2780, and PLG*Var = 0.0046. The theoretical exclusion rate in cases of disputed paternity is 16.5%. PMID- 3861034 TI - Cells of the gastrointestinal tract. Isolation procedures and application in research. PMID- 3861033 TI - Haptoglobin subtypes in Berlin, GDR. A simple procedure for haptoglobin purification and subtyping. AB - Sera were obtained from 1,275 blood donors in Berlin, probands involved in paternity tests, and from 119 families with 235 children; the sera were subtyped by isoelectric focusing, following preparation and reductive molecular cleavage of haptoglobin. In this paper, an uninvolved preparation technique is described for routine testing. Allelic frequencies are: Hp *1F = 0.1471; *1S = 0.2502; *2FF = 0.0020; *2FS = 0.5753; *2SS = 0.0251. Only one deviation from autosomal codominant inheritance was recorded in the family examinations, with illegitimacy considered possible. In the region of Berlin, the changes of ruling out uninvolved individuals in paternity suits have gone up from 18% (conventional technique recording two frequent alleles) to 33% (subtyping). PMID- 3861035 TI - Lymphoid cells of the gastrointestinal tract. Isolation procedures. PMID- 3861036 TI - Mononuclear phagocytes in the gastrointestinal tract. PMID- 3861038 TI - New approaches to gut immunology: intestinal-cell isolation. PMID- 3861037 TI - Interaction between intestinal and peripheral blood mononuclear cells. AB - Effective methods are available to isolated immunocytes from human intestinal mucosa. Isolated mononuclear cells from the mucosa of patients with Crohn's disease and normal controls were classified according to ultrastructure and cell surface profile by the use of a panel of monoclonal antibodies. In both compartments of the mucosa, i.e., the lamina propria and the epithelial layer, no differences were found between intestinal tissue from control patients and unaffected mucosa of patients with Crohn's disease. Inflamed mucosa was characterized by an accumulation of surface-Ig+ cells and, to a lesser degree, of monocytes and granulocytes. The predominant T cell phenotypes were a T4 cell in the lamina propria and a T8 cell in the epithelial layer. Most of the isolated immunocytes were found to be HLA/DR. Analysis of the functional properties of mucosa-associated T cells in a pokeweed-stimulated autologous B cell assay revealed that T cells originating from normal mucosa enhance the generation of IgA-producing B cells, whereas those from chronically inflamed mucosa do not. In contrast, peripheral T cells from patients with Crohn's disease favour expression of the IgA isotype, as compared with peripheral T cells from normal controls. Removal of Fc + T4 cells resulted in a significantly reduced number of IgA B cells. These findings point to an alteration of isotypic immunoregulation in Crohn's disease. It is postulated that a shift from IgA to IgG and IgM in the local immune response could result in antibody-dependent cytotoxicity for enterocytes. PMID- 3861039 TI - Veiled cells in the gastrointestinal tract. AB - Lately it has become known that for the initiation of an immune response an antigen presenting cell is needed. In the skin the antigen presenting cell system has been studied and is extensively supposed to consist of Langerhans' cells in the epidermis and dermis, veiled cells in the skin lymph, and interdigitating cells in the skin lymph nodes. These cells are considered to belong to the mononuclear phagocyte system which is in principle composed of cells stemming from the promonocyte/monocyte. To detect whether an antigen presenting cell system is present in the gut, we studied cell suspensions of gut tissues. Monoclonal cells with long actively moving cytoplasmic veils were found in cell suspensions from small intestinal villi of guinea pig and pig, but not of rat. These veiled cells appeared to be strongly Ia positive, as are the cells from the skin antigen presenting system. They share several ultrastructural and enzyme cytochemical characteristics with these skin cells. Gut veiled cells localize within the lympho-epithelium of Peyer's patches of the rat, just underneath this lympho-epithelium and in the T-dependent interfollicular area, according to Ia stainings on frozen tissue sections and to ultrastructural observations. From stainings with anti-IgA, -IgE, -IgG, -IgM and anti-T lymphocyte sera it is concluded that these cells do not belong to the lymphocyte series. It is suggested that these gut veiled cells belong to the monocyte/macrophage family and form an antigen presenting cell system in mucosa-associated lymphoid tissue, similar to the antigen presenting cell system in the skin. PMID- 3861040 TI - Fine needle aspiration cytology in two cases of well-differentiated acinic-cell carcinoma of the parotid gland. Discussion of diagnostic criteria. AB - Two cases of well-differentiated acinic-cell carcinoma of the parotid gland with diverse histology (one compact variant and one rare tubular-acinic type with an important lymphoid component) underwent fine needle aspiration. Both were clinically thought to be benign neoplasms but were correctly diagnosed preoperatively by aspiration cytology. Cytohistologic correlation in these cases showed that the decisive diagnostic criteria for well-differentiated acinic-cell carcinoma were the presence of atypical acinous structures and of cytoplasmic granules that were acid alcian blue negative and period acid-Schiff positive after diastase digestion. PMID- 3861041 TI - Fine needle aspiration cytology of granulomatous diseases of the lung, including nontuberculous Mycobacterium infection. AB - The spectrum of cytomorphologic changes of pulmonary granulomas diagnosed by fine needle aspiration (FNA) biopsy is reported, with a review of the pertinent literature concerning the cytologic diagnosis of granulomatous disease. In our cases, organisms were not seen in the Papanicolaou-stained smears. Recognition of the granulomatous cellular pattern, however, resulted in a thorough search for organisms by special stains, and an etiologic diagnosis was made in each case. These cases emphasize the need for routine staining and culture of FNA material when an initial diagnosis of malignancy is not made. One of the cases appears to be the first report of a nontuberculous Mycobacterium infection diagnosed by fine needle aspiration biopsy. PMID- 3861042 TI - Fine needle aspiration cytology of cat scratch disease. AB - The cytologic features of cat scratch disease diagnosed by fine needle aspiration cytology of a right inguinal lymph node in a 23-year-old woman are reported. Characteristic granulomas, with peripherally palisading epithelioid histiocytes and centrally located neutrophils, and an associated polymorphic cell population were observed. The cytologic pattern closely parallels the expected histopathologic findings and therefore can suggest the diagnosis in unsuspected cases or can confirm the clinical impression. The cytologic differential diagnosis and a discussion of other granulomatous lymphadenitis are presented. PMID- 3861044 TI - Fine needle aspiration cytology of benign lymph node hyperplasias. Diagnostic significance of lymphohistiocytic aggregates. AB - The fine needle aspiration cytomorphology and the number of lymphohistiocytic aggregates were correlated with five categories of benign lymph node histologies. Of 187 patients who had benign lymph node aspiration diagnoses made from 1975 to 1982 at the Medical College of Virginia, 26 had a subsequent lymph node biopsy. Excluded from the study were four cases with the biopsy site different from the aspiration site, three cases with evidence of metastatic carcinoma and one case of fistula at the site of biopsy. Of the remaining 18 cases, 13 (72%) had lymphohistiocytic aggregates on the aspiration slides. The mean number of lymphohistiocytic aggregates on the aspiration slides was greater in cases with histologic evidence of follicular hyperplasia (6.1) than in those with some other predominating benign histology (1.6). PMID- 3861043 TI - Fine needle aspiration biopsy in the evaluation of lymphoreticular tumors of the thorax. AB - The role of fine needle aspiration (FNA) biopsy in the evaluation of lymphoreticular disorders involving the lung and mediastinum was evaluated in a study of 16 cases from the authors' institutions. The cytologic material from these cases was reviewed, and the original cytologic interpretations were compared to the tissue diagnoses, with the overall accuracy of the cytologic interpretation evaluated. There were no false-positive diagnoses of malignancy in this series. A definite diagnosis of malignant lymphoma was most readily made in those cases in which the lymphoma was of the large-cell type. Small-cell and mixed large-cell and small-cell lymphoid proliferations were less able to be definitively interpreted, with pseudolymphoma presenting particular difficulty. The results support the conclusion that FNA biopsy can be useful in evaluating these lesions but also emphasize the fact that accurate diagnosis requires correlation of cytologic, clinical and laboratory data. PMID- 3861045 TI - Fine needle aspiration cytology of alveolar soft-part sarcoma. A case report. AB - A fine needle aspiration specimen from a mass in the thigh of a 25-year-old woman was submitted for cytologic examination. Malignant cells were found singly and in well-defined nests, resulting in an alveolar pattern. Individual cells were large, with moderate amounts of granular cytoplasm and vesicular nuclei with prominent nucleoli. The aspiration cytology findings plus the clinical setting suggested an alveolar soft-part sarcoma. Histologic and electron microscopic examination of the tumor mass confirmed the diagnosis. PMID- 3861046 TI - Nodular fasciitis initially diagnosed by aspiration cytology. AB - A case of nodular fasciitis diagnosed by fine needle aspiration cytology is described. The cytologic findings included fusiform cells, mitoses, macrophages, multinucleated giant cells and mesenchymal elements in a characteristic granular background substance. The cytopathologic diagnosis was subsequently confirmed by the histopathologic study of the tumor and by electron microscopy. PMID- 3861048 TI - Cytodiagnosis of bone tumors by fine needle aspiration. AB - A retrospective study was undertaken of bone lesions examined by preoperative fine needle aspiration (FNA) cytology in our hospital during the ten-year period from 1970 to 1979. The 430 cytologically examined lesions were classified into three groups: inflammatory lesions, tumorlike lesions and tumors. A total of 54 patients had undergone surgery, with most of the lesions in those cases proven to be tumors or tumorlike by histologic study. Correlation between the histologic and FNA cytologic findings showed complete compatibility in 76% of the cases, partial compatibility in 13% and incompatibility in 11%. It is concluded that FNA biopsy is appropriate for identifying bone tumors and tumorlike lesions if sufficient numbers of tumor cells are obtained for morphologic examination. Although aspiration cytodiagnosis can be of considerable value in the recognition of certain bone lesions, it cannot replace formal tissue biopsy in the diagnosis of primary bone neoplasms. The morphology of several common bone tumors is described in detail and their differential diagnosis is discussed. PMID- 3861047 TI - Aspiration biopsy cytology of metastatic extraskeletal myxoid chondrosarcoma and its cytologic differential diagnosis. AB - Transabdominal fine needle aspiration biopsy of a metastatic myxoid chondrosarcoma in retroperitoneal spaces revealed amorphous mucoid material containing clusters of chondroblasts with round hyperchromatic nuclei and scanty cytoplasm, pleomorphic mesenchymal cells with round nuclei and vacuolated cytoplasm and groups of immature cartilaginous cells with single or double nuclei and fibrillar or filmy cytoplasm. The cytologic differential diagnosis between myxoid chondrosarcoma and other myxomatous tumors of bone and soft tissue is discussed. PMID- 3861049 TI - Fine needle aspiration study of metastatic mixed adenosquamous carcinoma of the renal pelvis. A case report. AB - The findings in a fine needle aspirate of a psoas area metastasis from a mixed adenosquamous carcinoma of the renal pelvis are presented. The primary renal tumor is apparently the fourth such case reported in the literature; the pathogenesis of such tumors is briefly reviewed. The value of fine needle aspiration in excluding a clinically suspected abscess and in allowing a specific diagnosis of malignancy is emphasized. PMID- 3861050 TI - Subcutaneous endometriosis diagnosed by fine needle aspiration cytology. AB - The fine needle aspiration cytology (FNAC) of two patients manifesting cutaneous/subcutaneous endometriosis is presented. Endometrial tissue sampled by the aspiration technique manifested different cytologic characteristics as compared to those of endometrial tissue obtained by standard exfoliative methods. A primary difference was the appearance of the endometrial cells in syncytial clusters in the aspirate, in contrast to the three-dimensional clusters seen in exfoliated material. These cases emphasize the need to include endometriosis in the differential diagnosis of palpable lesions of the abdominal wall, especially in women with healed surgical scars, and the role of FNAC in diagnosing such lesions. PMID- 3861051 TI - Secretory carcinoma of the breast in an adult. Correlation of aspiration cytology and histology on the biopsy specimen. AB - Needle aspiration was performed on the excisional biopsy specimen of a breast mass in a 63-year-old woman. The cytologic features in the aspirate included solid and papillary proliferations of tumor cells with abundant intracytoplasmic vacuolization and secretion. Histologic study of the lesion showed a secretory carcinoma. Although this is a rare breast neoplasm, especially in adults, the cellular features are characteristic and may permit a specific diagnosis on needle aspirates. PMID- 3861052 TI - Carcinosarcoma of the uterus. Cytologic and ultrastructural features. AB - A 56-year-old woman presented with a carcinosarcoma consisting of a small focus of adenocarcinoma and a larger endometrial stromal sarcoma component. Although a preoperative endometrial biopsy revealed only adenocarcinoma, an endometrial smear obtained with an endometrial brush sampler revealed many undifferentiated malignant cells and a smaller number of adenocarcinoma cells. These undifferentiated malignant cells were cytologically identical to the stromal sarcoma cells in an imprint smear from the surgically removed tumor. The cellular and ultrastructural features of the stromal sarcoma are described in detail. PMID- 3861054 TI - Unsuspected strongyloides coexisting with adenocarcinoma of the lung. AB - The findings in an unsuspected case of Strongyloides stercoralis infestation coexisting with adenocarcinoma of the lung are presented. The diagnosis of adenocarcinoma was confirmed histologically by lung biopsies; the parasitic infection was initially diagnosed by sputum cytology and then by bronchial washings. A stool specimen submitted to the microbiology laboratory confirmed the diagnosis of S. stercoralis infection. This case again suggests the possibility that neoplastic disease may play a role similar to that of immunosuppression in creating an immune deficiency, thus increasing the susceptibility to infectious diseases. PMID- 3861053 TI - Cytology and histopathology of metastatic malignant melanoma involving a polyp on the uterine cervix. A case report. AB - A case of unusual localization of metastatic malignant melanoma on the cervix uteri, which was diagnosed by cytologic examination of a Papanicolaou smear is reported. The cells contained no pigment, but they had the characteristic appearance that suggested the possibility of a metastatic malignant melanoma, which was confirmed by histopathologic examination of an excised polyp. PMID- 3861055 TI - Entamoeba gingivalis in sputum smears. AB - Entamoeba gingivalis is a common parasite of the human buccal cavity whose rare appearance in Papanicolaou-stained sputum smears may be missed. Two such cases are described, including the morphologic features of this ameba. The trophozoites were seen to phagocytize leukocytes as well as red blood cells, in distinction to E. histiolytica, which phagocytizes only red blood cells and also can cause pulmonary abscesses. The concomitant finding of Actinomyces sp. organisms in one patient reinforces the possible symbiotic relationship between the two organisms, as has been suggested for their appearance in other extraoral sites, such as the female genital tract. PMID- 3861056 TI - Polymorphous exudates and atypical mononuclear cells in the cerebrospinal fluid of patients with Sjogren's syndrome. AB - Central nervous system (CNS) complications of Sjogren's syndrome are now well recognized. To determine if any of the pathologic changes in the CNS in patients with Sjogren's syndrome were reflected in the cellular composition of cerebrospinal fluid (CSF), we examined the CSF of 14 patients with Sjogren's syndrome and neurologic symptoms and compared the differential cell counts in those cases with those of 14 control patients with similar neurologic symptoms. Patients with Sjogren's syndrome had polymorphous (mixed) inflammatory exudates in CSF, composed predominantly of lymphocytes, but including variable numbers of plasma cells, neutrophils and erythrocytes. In addition, the CSF of all patients with Sjogren's syndrome contained large, atypical, morphologically distinct mononuclear cells. The mean percentage of these cells in the CSF of patients with Sjogren's syndrome (8.3 +/- 1.9) was significantly higher (p less than 0.001) than that observed in the control patients (0.7 +/- 0.2). These results suggest that involvement by Sjogren's syndrome may be suspected by noting a polymorphous exudate containing characteristic atypical mononuclear cells in CSF obtained by lumbar puncture. PMID- 3861057 TI - The endocervical smear as a simple and quick method for the determination of ovulation. AB - The endocervix undergoes cyclic changes in every menstrual cycle, as reflected by the rheologic properties of the cervical mucus. A study was therefore undertaken to establish whether there were any morphologic changes in the endocervical columnar cells, as seen in the endocervical smears, that could be correlated with ovulation and anovulation. An endocervical smear was collected in the luteal phase of the cycle from patients in whom an endometrial biopsy or D & C was being done as a part of an infertility investigation. A significant correlation was observed between the endocervical smear interpretation and the endometrial histology as to whether the cycle was ovulatory or anovulatory. PMID- 3861058 TI - Ploidy (n) PMID- 3861059 TI - A case of pure primary squamous-cell carcinoma of the breast diagnosed by fine needle aspiration biopsy. PMID- 3861060 TI - Egg of Schistosoma japonicum in ascitic fluid. PMID- 3861061 TI - [8th symposium of the Working Group for Osteology. 12-13 April 1984, Davos, Switzerland. Abstracts]. PMID- 3861062 TI - Clonidine in treatment of menopausal flushing. PMID- 3861063 TI - Metabolic consequences of postmenopausal estrogen and progestogen treatment. PMID- 3861064 TI - Clonidine treatment in vegetative dysfunction--experimental rationales. AB - The present paper attempts to place the clinical use of clonidine in gynecology in a broadened perspective against the most recent advances in neuropsychopharmacology. From this review emerges the concept that clonidine, by means of its action in the central nervous system, probably affects mechanisms of crucial significance in psychosomatic symptomatology, involving the balance between attention to the external versus the internal environment. Since brain NE systems such as the one originating in the LC influence or reach vast regions of the CNS and not only cardiovascular centres, any malfunction of the LC system, whether induced by, for example, drug addiction or hormonal factors, will affect a number of functions of the individual, particularly responses to stress, and, as we understand, cardiovascular and vegetative reactivity. At present we can hypothesize that a damping or, perhaps, stabilization of the responsiveness of brain NE systems may be a fundamental mechanism of action of clonidine in this regard. As a consequence of this discussion the use of clonidine in other disorders with a clear psychosomatic component, such as the irritable bowel syndrome as well as premenstrual tension, appear to be quite interesting future avenues to explore. PMID- 3861065 TI - Clinical experience of clonidine in treatment of menopausal flushing. PMID- 3861066 TI - Epidemiology of the climacterium. PMID- 3861068 TI - A longitudinal study of growth in children with acute lymphoblastic leukemia. AB - Growth in terms of both height and weight was studied in a longitudinal sample consisting of ten children who all experienced the onset of acute leukemia between 18 months and 7 years of age. In spite of the lack of deviation in body size at birth, these children had somewhat higher values for attained size than the reference group one year before diagnosis. The information from this study showing a decrease in growth rate before the start of treatment, could suggest that the disease causes the growth failure. Growth rate for height increased with time from the first year of treatment, which could be correlated to a positive effect of medical treatment of the disease. These results indicate a very stable regulation of growth between 18 months and 12 years of age. The children dropped temporarily in mean one standard deviation (SD) corresponding to about 4 cm, from one year before the start of treatment to the end of the three years of treatment. It seems, however, that it is possible for the body to repair such a temporary growth inhibition as is seen in the catch-up growth during the following two years. Height measured in SD for the group two years after discontinuing treatment was practically the same as height at the time of the start of treatment. Children with leukemia during the first years of life and during the pubertal period may not show a similar growth pattern. PMID- 3861067 TI - HLA antigens in patients with otosclerosis. AB - Seventy-four (50 females and 24 males) consecutively sampled patients with otosclerosis were tissue typed for HLA A and B antigens. There was no significant increase in any A or B antigen, but the frequency of B40 was significantly lower (p less than 0.05) in patients than in blood donors. No significant difference in HLA antigen frequencies was found between men and women, or in patients with vs. without a family history of otosclerosis. PMID- 3861069 TI - Extra early mother-infant contact and duration of breast-feeding. AB - We tested the hypothesis that extra early physical contact between mother and infant is associated with prolonged breast-feeding. Healthy, advantaged mothers and their healthy, mature, vaginally-delivered, firstborn infants were randomly assigned to receive either regular contact (N = 39) or extra early contact beginning approximately one-half hour after delivery (N = 39). Fifty-three (68%) of the 78 infants were breast-fed. Age at which complete weaning occurred was known for 50 (94%) of the 53 infants. Prolonged breast-feeding was not significantly associated with extra contact. Suckling during extra early contact was associated with greater incidence of breast-feeding at two months (p less than 0.001) and three, four and five months (0.10 greater than p greater than 0.05) for male and female infants combined. PMID- 3861070 TI - Extra early physical contact and aspects of the early mother-infant relationship. AB - We tested the hypothesis that extra early physical contact between mother and infant enhances aspects of their early relationship. Healthy, middle-class mothers and their healthy, firstborn, singleton infants delivered vaginally at full-term were randomly assigned to receive either regular contact (RC; N = 39) or extra early physical contact (EC; N = 39) following delivery. RC infants remained in cribs beside their mothers' beds, while EC infants and mothers had a mean of 46 min of physical contact in the recovery room. There was no difference between EC and RC subjects for the following outcome measures: amount of time mothers chose to have infants with them during the postpartum hospital stay; quality of mother-infant interaction at two days and one month; concern mothers expressed for the infant at one month; mothers' perception of their postpartum adjustment; mothers' perception of the infant at two days and one month, and of the infant's temperament at eight months; and extent of mothers' assisting with and soothing the child during a physical examination at 13 months. EC children cried significantly less during the examination at 13 months. These findings do not support the hypothesis that extra early physical contact between mother and infant enhances their relationship. PMID- 3861071 TI - Mediation of macrophage reactions in immune tissue injury. AB - The chemotactic specificity of three types of macrophage chemotactic factors (MCF) -a, -b, and -c, from delayed hypersensitivity reaction (DHR) skin sites in guinea pigs, was analysed. MCF-c shared common antigenicity with the macrophage chemotactic lymphokine released from bovine gamma globulin (BGG) and horse radish peroxidase (HRPO) -stimulated lymphocytes, using an immunoadsorbent column conjugated with anti-MCF-c antibody. These purified lymphokines were very similar, or possibly identical in terms of physicochemical and serological properties. BCG-induced lymphokine seemed to exist as complexes with serum protein at the skin site. A change in the proportion of each MCF was observed during the development of DHR. Furthermore, MCF-a and -b attracted Ia- M1 cell line cells, while MCF-c attracted Ia+ cells. Moreover, the responsive guinea-pig monocytes were divided mainly into two distinctive migrating subpopulations. One subpopulation was responsive to MCF-a and -b, and the majority of responding cells were "Ia-negative". The second subpopulation was responsive to MCF-c and the predominant cell type was "Ia-positive". The data suggest that macrophage reactions in the DHR are mediated by MCF-a, -b, and -c and that MCF-c attracts Ia bearing accessory macrophages and MCF-a and b- attract Ia negative macrophages. PMID- 3861072 TI - The longitudinal course of recurrent affective illness: life chart data from research patients at the NIMH. AB - Using data gathered in a naturalistic study of 95 research patients at the NIMH, a retrospective method of documenting the life course of recurrent affective illness is presented, along with a partial prospective validation of this method. In these patients, the severity, frequency, and duration of manic and depressive episodes, as well as their pattern and distribution, are characterized. These variables are examined in different patients subgrouped according to gender and age of onset, polarity, and rapidity of cycling of illness. The findings are compared with data on the life course of affective illness found in studies from the pre-pharmacologic era. PMID- 3861073 TI - [Prognostic significance of cytochemical activity in blasts in acute lymphatic leukemia in adults]. PMID- 3861074 TI - Some cardiovascular risk markers are also important in old age. PMID- 3861075 TI - [Fractures of the midface]. PMID- 3861076 TI - [Use of the multi-bracket arch in the lingual technic]. PMID- 3861077 TI - [Orthodontics and maxillofacial surgery in adolescence. Current status yesterday and today]. PMID- 3861078 TI - [Therapeutics in oral oncology. Past, present, future]. PMID- 3861079 TI - [Possibilities and limits of orthopantomographic films]. PMID- 3861080 TI - [Concentration of intravenously infused cefmenoxime (CMX) in human vitreous cavity]. PMID- 3861081 TI - [Prostaglandin E2 release from rabbit anterior uvea]. PMID- 3861082 TI - [Dental implications of Paget's disease]. PMID- 3861083 TI - [Resorption of the alveolar ridge following tooth extraction and the placement of immediate prostheses]. PMID- 3861084 TI - [Cervical tumors]. PMID- 3861085 TI - [Zona of the facial nerve]. PMID- 3861087 TI - [The impacted canine tooth: elucidation of various important aspects in diagnosis and therapy]. PMID- 3861086 TI - [Various factors influencing ridge resorption in the edentulous mouth]. PMID- 3861088 TI - Megakaryoblastic transformation of Ph positive chronic granulocytic leukemia. AB - A case of well-documented and illustrated megakaryoblastic transformation in a patient with chronic granulocytic leukemia is presented. The salient features of this case were the presence of megakaryoblasts in the peripheral blood and bone marrow and characteristic cytochemical and electron microscopic findings. In addition, the authors observed an unusual, previously unreported, similarity of the abnormal platelets with those described in the Gray platelet syndrome. A literature review of the 13 previously described cases is included. PMID- 3861089 TI - Acute lymphoblastic leukemia following myelodysplastic syndrome. AB - A 58-year-old man presented with anemia and neutropenia. The bone marrow examinations showed changes consistent with myelodysplastic syndrome. Twenty months later, acute lymphoblastic leukemia developed. This case appears to represent myelodysplastic (preleukemic) syndrome terminating in acute lymphoblastic leukemia. PMID- 3861090 TI - Low dose cytosine arabinoside in acute myeloid leukemia: remission is not due to differentiation induction. AB - A patient with acute nonlymphoblastic leukemia (FAB M4), showing a near tetraploid chromosome complement on his marrow cells, was treated with low dose cytosine arabinoside and achieved remission. During remission the near tetraploid marrow chromosome complement disappeared and reappeared upon relapse of leukemia. These findings are interpreted as evidence against differentiation induction in the leukemic cell line as a mechanism for remission of the disease in this patient. PMID- 3861091 TI - Clonal development from a progenitor with restricted differentiative expression in acute lymphoblastic leukemia. AB - Three patients with acute lymphoblastic leukemia (ALL) and heterozygous for the Mediterranean variant of glucose-6-phosphate dehydrogenase (G6PD) have been investigated with the 2-deoxyglucose-6-phosphate (2dG6P) method to determine the number and type of progenitor cells in which the disease arose. A monoclonal origin was established for the lymphoblasts, while the other hemopoietic cell lines were not involved in the leukemic process. PMID- 3861092 TI - Acute nonlymphocytic leukemia in a glue sniffer. AB - A 17-year-old white male with a past history of chronic inhalational abuse of plastic glue was referred to our institution for sore throat, cervical adenopathy, and an abnormal peripheral blood smear. A diagnosis of acute myelomonocytic leukemia was made and abnormalities in cytogenetic studies were demonstrated. Specific inquiry regarding this form of drug exposure should be pursued when searching for possible etiologies of malignant disease. PMID- 3861093 TI - The morphologic characteristics of cervical ripening induced by the hormones relaxin and prostaglandin F2 alpha in a rabbit model. AB - In previous studies, both purified porcine relaxin and prostaglandin F2 alpha, have been applied vaginally in the human to promote cervical ripening near term. In this study, the histologic changes in the cervix induced by these locally applied hormones are described in a rabbit model. Similar histologic changes occurred following treatment with relaxin or prostaglandin F2 alpha and these changes were comparable with those seen in the cervix following the spontaneous onset of labor in control rabbits. The main histologic features were a dissolution of the collagen bundles and an apparent increase in the ground substance. However, a unique giant cell infiltrate was seen in the relaxin treated rabbits and the control rabbits in spontaneous labor. The nature and possible function of these giant cells are discussed. The similarity of the general morphologic changes in the cervix induced by relaxin and prostaglandin F2 alpha supports the concept that these hormones may act (either in sequence or separately) to activate the same collagenolytic system to produce the same effect in cervical connective tissue rather than act in parallel to produce separate or complementary structural changes. PMID- 3861095 TI - Uterine rupture and labor induction with prostaglandin. PMID- 3861094 TI - Microvasculature of preovulatory follicles: comparison of in situ and in vitro perfused rabbit ovaries following stimulation of ovulation. AB - Perifollicular vasculature undergoes significant morphologic changes as ovulation approaches. These vascular changes were observed in in vitro perfused and in situ rabbit ovaries by means of scanning electron microscopy of microcorrosion casts. Casts were made in in situ unstimulated ovaries, in situ ovaries stimulated with human chorionic gonadotropin, in vitro perfused unstimulated ovaries, and in vitro perfused ovaries after an ovulation-inducing dose of human chorionic gonadotropin, prostaglandin F2 alpha, histamine, or norepinephrine. Dilated vessels, extravasation of resin from weakened vessels, and filling defects at the apex of the follicle were observed in in situ ovaries 9 to 12 hours after stimulation and in in vitro perfused ovaries 4 to 6 hours after human chorionic gonadotropin. In vitro perfused ovaries stimulated with prostaglandin F2 alpha or histamine demonstrated dilated capillaries with extravasation of the resin and filling defects at the apex of large follicles. Norepinephrine-stimulated ovaries showed incomplete filling of vessels, although some large follicles showed extravasation of resin. The occurrence of dilated vessels, extravasation of resin, and filling defects is indicative of preovulatory vascular changes in both in situ and in vitro perfused ovaries, regardless of the ovulatory stimulus. PMID- 3861096 TI - Initial tooth movement: force application and pain--a relationship? AB - Initial dental casts of 24 patients, who had previously completed a discomfort index card for the first 16 days following placement of a fixed appliance, were examined. A method is described whereby the anterior and overall crowding in the relevant dental arch was measured as a tooth/arch discrepancy index using the reflex metrograph. The crowding was measured in three dimensions as the discrepancy between the sum of the anatomic mesiodistal widths of the teeth and the actual mean arch shape canine to canine (3 to 3) and first molar to first molar (6 to 6) inclusive. An additional two-dimensional method using the best "goodness of fit" (least variance) of a parabolic arch shape for the mean arch length in the 6 to 6 crowding measurement is also described. The measurement accuracy of the reflex plotter was less than 0.12 mm. The method error for the crowding measurements expressed as root mean square (RMS) values was 0.97 mm for the anterior tooth/arch, 1.45 mm for the overall tooth/arch discrepancies, and 1.35 mm for the tooth/arch discrepancy based on the best fit of a parabolic curve. It is proposed that since the same bracket width and fully engaged arch wire type were used in every case, some relationship between the initial crowding that reflected the forces applied and the discomfort experienced by the patients might be expected. This was not found to be true. There was no correlation between the total discomfort experienced and the crowding measurements 3 to 3 or 6 to 6.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3861097 TI - Photoelastic effects of maxillary protraction on the craniofacial complex. AB - The conventional treatment of anterior crossbites has been the application of orthopedic force to the mandible to redirect its growth. However, in the patient with an underdeveloped maxilla, this treatment alone is not sufficient. Therefore, the purpose of this investigation was to study the orthopedic effects of maxillary protraction appliances in the treatment of anterior crossbites. A three-dimensional anatomic model of a human skull was fabricated with birefringent materials for photoelastic analysis. Three maxillary protraction appliances that utilized different anchorage units were used. The protraction forces placed on these appliances were parallel to the occlusal plane, a downward vector 20 degrees to the occlusal plane, and a combination of these two vectors. The resulting stress patterns were observed. The effects of the forces produced by the three appliances were transmitted to the maxilla and distant craniofacial structures. Both a parallel traction and a 20 degrees downward pull to the occlusal plane caused a constriction of the anterior portion of the maxilla. The parallel traction caused a counterclockwise (opening) rotation of the molar tooth and palatal plane. A 20 degrees downward force to the occlusal plane decreased this effect. PMID- 3861098 TI - Clinical measurement of distally directed headgear loading. AB - A method was developed to measure the distally directed load that is delivered to molar teeth by orthodontic headgear. Measurements on a three-dimensional model and on four patients showed that the intraoral load at the maxillary molar teeth was generally the same as or greater than the measured extraoral force. Higher loadings on the molar teeth were thought to be caused by lever arms present in the headgear assemblies. Both the power arm face-bow and the symmetrical face-bow were effective in delivering an unbalanced load when one arm was bent well outward. The unilateral effect was decreased as the extraoral force was increased. Bending of the face-bow by the stronger extraoral forces probably was responsible for the decreased unilateral effect. The effect of lever arms in the headgear assembly on the load delivered to the teeth warrants further study. PMID- 3861099 TI - Patient perceptions of orthognathic surgery. AB - A retrospective study of ninety orthognathic surgery patients was conducted to investigate (1) their presurgical concerns and motivations, (2) their preoperative preparation for surgery, and (3) their perceptions of the postsurgical outcome. All subjects completed a twenty-three-item questionnaire and Rotter's Locus of Control Inventory. Statistical date analyses were performed by means of frequency distributions, chi-square, Spearman's r, and Fisher's exact probability tests. The results are presented as thirteen tentative conclusions categorized into three broad areas: motivations and concerns, presurgical preparation, and postsurgical outcome. In the area of motivations and concerns, those with primarily esthetic motivations have less initial reticence toward having orthognathic surgery and less difficulty adjusting to their new appearance than those with strong functional incentives. Younger patients and those patients with strong cosmetic motivations are less concerned about surgical risks. Under the category of presurgical preparation, more females than males desire to speak to a previous orthognathic surgery patient. Patients who receive inadequate explanation of the surgical procedure are more likely to be emotionally unprepared. One of the leading factors in patient dissatisfaction with surgery is the patient's experience of postoperative "surprises." In the area of postsurgical outcome, two-jaw operations precipitate more pain complaints than single-arch procedures. With time, however, patients tend to forget the degree of postoperative pain. Maxillary surgical procedures lead to less severe pain complaints than mandibular procedures, but there are more initial complaints of breathing difficulties and sinus problems following maxillary procedures. Surgical goal fulfillment does not guarantee that a patient would re-elect to have the treatment. PMID- 3861100 TI - Dentofacial maturation of untreated normals. AB - Cephalometric head films from a sample of 65 untreated normal persons were evaluated to determine the nature and extent of the normal dentofacial maturation process. Thirty-four parameters were examined in the mixed dentition (9 to 10 years), the early permanent dentition (12 to 13 years), and early adulthood (19 to 20 years). Results showed the importance of maxillary development, particularly in the vertical plane, as it was associated with the amount and direction of sagittal mandibular growth. "Late mandibular growth" was found to be a forward (bite-closing) rotation of the mandible that occurred after the cessation of vertical maxillary growth. Condylar growth amount and direction were influential in determining the degree of sagittal mandibular change. The degree of forward (bite-closing) mandibular rotation was strongly associated with the amount of both maxillary and mandibular molar eruption. Incisor positions were found to remain relatively constant, showing compensations for the amount and direction of skeletal growth. No correlations or predictions of clinical value were found between the cephalometric parameters examined and previously recorded dental-cast variables. PMID- 3861101 TI - Dentofacial findings in a child with unrepaired median cleft of the lip at 4 years of age. AB - Dentofacial findings, audiometric and tympanometric studies, and the results of a speech evaluation of a 4-year-old boy from Yucatan, Mexico, with a rare median facial cleft are reported. It is of interest to note that all the abnormalities present in this patient were limited to the midline structures of the maxillary arch. The case presented fits into the second of the two groups of median facial anomalies described by DeMyer and his associates. There was minimal deficiency of the midline facial tissue, and there were no apparent abnormalities of the underlying brain. A brief description of the surgical techniques used for repair of the lip and palate is presented. PMID- 3861102 TI - A comparison of arch widths in adults with normal occlusion and adults with class II, Division 1 malocclusion. AB - This study compares arch widths and other cast and cephalometric measurements of 36 normal-occlusion subjects (19 males, 17 females) with 39 Class II, Division 1 subjects (20 males, 19 females). None of the subjects had received orthodontic treatment. Analysis of variance demonstrated that subjects with normal occlusion had larger maxillary molar widths, maxillary canine widths, and maxillary alveolar widths than subjects with malocclusion; only male subjects with normal occlusion had larger mandibular molar widths and mandibular alveolar widths than the malocclusion subjects; the normal occlusion and malocclusion groups had similar mandibular canine widths; and when the lower molar and alveolar widths were subtracted from corresponding upper widths, the remainders of the Class II group were negative instead of positive, contrary to the normal group. This revealed a posterior crossbite tendency in the Class II group. PMID- 3861103 TI - Skeletal and dental changes following functional regulator therapy on class II patients. AB - Craniofacial growth in 100 patients treated with the functional regulator of Frankel for about 24 months was compared with craniofacial growth seen in a matched group of untreated persons with Class II malocclusion. Both conventional and geometric cephalometric analyses were used to evaluate the skeletal and dental adaptations. This study shows several clear effects of treatment in either of two age ranges considered. The principal skeletal effect was advancement of the mandible along the direction of the facial axis. This advancement resulted in increases in mandibular length and in vertical facial dimensions. There was little effect of treatment upon maxillary skeletal structures with the exception of point A, which moved slightly posteriorly. Dentoalveolar adaptations due to treatment included a decrease in the normal forward movement of the upper molar and an increase in the normal vertical movement of the lower molar. There was a 2 mm posterior movement of the tip of the upper incisor but minimal anterior tipping of the lower incisor. PMID- 3861104 TI - Assessment of the bulimic patient. AB - A comprehensive method of assessing the bulimic patient founded on the biopsychosocial model is outlined. Particular emphasis is given to the behavioral, biological, and psychological levels of organization. Case material is used to illustrate the marked heterogeneity of the bulimic syndrome and the need for thorough assessment. PMID- 3861105 TI - Bulimia associated with increased intracranial pressure. PMID- 3861106 TI - Immunobiology of the Dunning R-3327 rat prostate adenocarcinoma sublines: plasma and tumor effusion prostaglandins. AB - Enhanced production of prostaglandins (PGs) by experimentally-induced and naturally occurring tumors and their effect on tumor growth and immunosurveillance have been noted. Directed toward further evaluation of the relationship between prostatic tumor growth and its milieu, i.e., microenvironment, we investigated the possible correlation between levels of PGs, tumor size, and metastatic potential. For this purpose, the levels of PGE2 and PGF2 alpha in plasma and tumor effusions of three tumor sublines of the Dunning R 3327 rat prostate adenocarcinoma were measured: R-3327H, well-differentiated, slow-growing, and poorly metastatic; R-3327G, poorly differentiated, fast growing, and poorly metastatic; and R-3327 Mat LyLu, anaplastic, fast-growing, and highly metastatic. The level of PGF2 alpha was highly variable with no significant differences being noted between the tumor sublines. The mean values of PGF2 alpha were, however, higher, although not significantly so, in the smaller tumors within each of the sublines. The levels of PGE2 were significantly higher in Mat LyLu effusions than those from the nonmetastasizing R-3327G and H sublines. Evaluation and comparison of the relationship between tumor burden, i.e., size versus levels of PGE2 and PGF2 alpha showed no significant differences. A vasodilator and regulator of immunological responsiveness, PGE2, may function as a modulator of tumor metastases. In consonance with studies by others elevated levels of PGE2 may possibly serve as a prognostic marker for the high metastatic potential of neoplastic cells. PMID- 3861107 TI - Leukemia cutis. A histopathologic study of 42 cases. AB - Biopsy specimens of skin from 42 patients with leukemia cutis were studied. Typing of leukemia was based on histopathologic and histochemical findings in peripheral blood and bone marrow. There were three patients with acute lymphocytic leukemia, 16 with chronic lymphocytic leukemia, 12 with acute granulocytic leukemia, three with chronic granulocytic leukemia, five with acute monocytic leukemia, and three with acute myelomonocytic leukemia. In general, leukemia cutis shows a diffuse infiltration of leukemic cells in the dermis and subcutaneous tissue, often infiltrating between collagen bundles. Extensive involvement and disruption of blood vessels and skin adnexa are characteristic findings in granulocytic, monocytic, and myelomonocytic leukemia cutis, but biopsy specimens of skin in patients with different types of leukemia show a wide range of histopathologic changes that are variable among the various types of leukemia and sometimes even among different patients with the same type of leukemia. A final typing of leukemia should not rely only on regular histopathologic findings of a skin biopsy, but should depend more on morphologic and histochemical studies of smears of peripheral blood or of bone marrow or both. PMID- 3861108 TI - A bellow's leak in an Ohio anesthesia ventilator. PMID- 3861109 TI - Anesthesia ventilators should have adjustable high-pressure alarms. PMID- 3861110 TI - Allergy and Tourette's syndrome. AB - Four patients with Tourette's syndrome who presented in an allergist's office are described. The diagnostic criteria, presentation of Tourette's syndrome, and current therapy are discussed. All four patients had increased serum IgE levels and positive skin tests. Symptoms of Tourette patients may mimic allergy or present combined with allergic illness. PMID- 3861111 TI - Nifedipine inhibits human bronchial smooth muscle contractions induced by leukotrienes C4 and D4, prostaglandin F2 alpha, and potassium. AB - The effects of nifedipine, a calcium channel blocker, on human bronchial smooth muscle contractions induced by leukotrienes C4 and D4 (LTC4, LTD4), prostaglandin F2 alpha (PGF2 alpha), and potassium were studied in vitro. The LTC4, LTD4, PGF2 alpha, and potassium caused bronchial smooth muscle contractions. After incubation with nifedipine at 2.9 X 10(-6)M, the contractions caused by LTC4, LTD4, PGF2 alpha, and potassium were significantly decreased. Nifedipine also significantly reversed human bronchial smooth muscle contractions previously initiated by these agonists. The effect of nifedipine on potassium contraction was significantly greater than that on LTC4, LTD4, and PGF2 alpha-induced contractions. The pharmacologic feature of nifedipine is that it inhibits the calcium influx associated with membrane depolarization. Therefore, these results suggest that there are two mechanisms of calcium movements in human bronchial smooth muscle contractions induced by LTC4, LTD4, and PGF2 alpha: membrane depolarization-dependent and -independent mechanisms. PMID- 3861112 TI - The HLA-A, -B, and -DR phenotypes and tuberculosis. AB - The HLA-A, -B, and -DR antigens were studied in black Americans to analyze deviation in phenotype distribution between ATS Class 3 patients with tuberculosis disease and ATS Class 2 healthy persons with significant tuberculin reaction, but no tuberculosis. Statistical analyses with Fisher's exact test revealed a significant difference in frequency distribution of HLA-B5 (p = 0.046), HLA-DR5 (p = 0.0276), and HLA-DR6y (p = 0.0095) between ATS Class 2 and ATS Class 3 patients. There was a significant decrease in HLA-DR6y (p = 0.01) but increase in HLA-B5 and HLA-DR5 phenotypes in ATS Class 3 patients. PMID- 3861113 TI - Cyclosporine and renal prostaglandin E2 production. PMID- 3861114 TI - Neuronal cholecystokinin. PMID- 3861115 TI - Comparative distribution of cholecystokinin and other neuropeptides. Why is this peptide different from all other peptides? PMID- 3861117 TI - The distribution and some connections of cholecystokinin neurons in the rat brain. PMID- 3861116 TI - Sulfation and desulfation of cerebral cholecystokinin. AB - An apparently novel sulfotransferase present in microsomal and vesicular fractions from rat brain is able to transfer [35S]sulfate groups from [35S]PAPS to CCK derivatives. Its optimum pH (approximately 6), its substrate specificity, and its subcellular localization are all consistent with its function as post translational processing enzyme. However, its presence in tissues devoid of CCK argues against this idea, or could simply mean that it is involved in the processing of other peptides besides CCK. No evidence could be obtained for extensive desulfation of endogenous CCK-8 released by depolarization of brain slices. PMID- 3861118 TI - Studies on cholecystokinin-containing neuronal pathways in rat cerebral cortex and striatum. AB - Lesion experiments were performed to investigate the origin of CCK-containing afferents of the striatum. All the subdivisions of the striatum that were investigated seem to receive CCK afferents from dorsolateral and lateral neocortical areas. However, destruction of these cortical areas alone did not reduce CCK-IRC in the striatum. Only after an additional parasagittal severance of the corpus callosum were significant decreases in CCK-IRC of all striatal subdivisions observed. Thus, CCK neurons in ipsilateral midline areas (such as the cingulate cortex) or, more likely, in contralateral cortical areas, seem to project to the striatum of one side. The CCK fibers seem to enter the striatum via the capsula externa, since a lesion of this structure has been shown to diminish the CCK-IRC in the striatum. In addition, the dorsomedial part of the head of the striatum may receive a projection of CCK fibers from the anterior cingulate area. A series of lesions which severed the afferents of structures caudal to the striatum, that is, the amygdaloid complex and the ventral tegmental area plus substantia nigra, did not reduce CCK-IRC in the striatum. Some of these lesions even significantly enhanced CCK-IRC in several subdivisions of the ipsilateral and contralateral striatum. Further studies will be necessary to cast some light on these caudal CCK afferents to the striatum, which are obviously extremely complex. PMID- 3861119 TI - Anatomical studies of cholecystokinin in neurons and pathways involved in neuroendocrine regulation. AB - A CCK-like substance has been identified in two distinct neuronal systems of the PVN which are both involved in neuroendocrine regulation. The CCK parvicellular neurons are potentially involved in the regulation of adenohypophyseal hormone secretion through projections to the external zone of the median eminence. CCK immunoreactivity was also identified in the magnocellular-neurohypophyseal system, exclusively in oxytocinergic neurons. Thus, CCK might participate in the modulation of oxytocin secretion. PMID- 3861120 TI - Studies on brain cholecystokinin in different species using sequence-specific antisera. PMID- 3861121 TI - Electrophysiological studies of the role of cholecystokinin in the substantia nigra and its interactions with dopamine. PMID- 3861122 TI - Cholecystokinin potentiation of dopamine-mediated behaviors in the nucleus accumbens. PMID- 3861123 TI - Distinct properties of cholecystokinin-8 and mixed dopamine-cholecystokinin-8 neurons innervating the nucleus accumbens. PMID- 3861124 TI - Cholecystokinin and gastrin forms in the nervous system. AB - Cholecystokinin octapeptide is the predominant representative of the gastrin-CCK family in the central nervous system. Other forms occur in low concentrations, or restricted locations, as do the gastrins. The pathways of biosynthetic processing can now be studied in detail, following the elucidation of the cDNA sequence for the two peptides. In the vagus both CCK and gastrin can be found. Brain stem neurons receiving an input from gastric mechanoreceptors respond to CCK-8, but most do not respond to gastrin given intravenously or intra-arterially. This system, which may well be involved in mediating the peripheral satiety effect of CCK, is therefore able to distinguish between the two peptides. PMID- 3861125 TI - The effects of cholecystokinin-8 in the nucleus tractus solitarius. PMID- 3861126 TI - Satiety effects of cholecystokinin and ceruletide in lean and obese man. AB - Cholecystokinin (CCK) has been shown to produce satiety not only in a variety of animal species but in man as well. In healthy humans, CCK reduces appetite and activation arising from the preparation of a meal, inhibits intake of liquid food in both non-obese and obese subjects, and decreases the intake of solid food. The closely related caerulein produces a similar reduction of solid food consumption in lean and, as suggested by preliminary results, in obese man. There is good evidence that the satiety effect of CCK depends on its inhibition of gastric emptying and the consequent gastric distension. In healthy man, the same dose of caerulein found to reduce food intake also slows gastric emptying of a semisolid meal. This effect seems to be relayed into the brain by afferent vagal fibers as in animals; selective gastric vagotomy blocks the satiety effect while pharmacological antagonism of vagal motor effects or lesions in the ventro-medial hypothalamus do not. Ongoing studies suggest that gastric vagotomy also blocks the satiety effects of caerulein in man. A critical role for CCK in the control of human feeding behavior seems certain. PMID- 3861127 TI - Opiate antagonistic function of cholecystokinin in analgesia and energy balance systems. AB - Because several effects of cholecystokinin (CCK) are opposite to those reported for opioids, it seemed likely that CCK may function as an endogenous antagonist of opiate action. This hypothesis was tested initially by assessing the effect of CCK on opiate analgesias. Systemic administration of CCK attenuated opiate analgesias produced by morphine and footshock, but did not reduce nonopiate footshock analgesia. When delivered directly to the lumbosacral spinal cord, a critical site of opiate action, 3.6 ng of CCK-8 significantly inhibited opiate mediated footshock analgesia; however, 3.6 ng of desulfated CCK-8 did not have an effect. Sequestering of endogenously circulating CCK by antibodies raised against CCK through an active immunization procedure resulted in a potentiation of morphine analgesia. If CCK functions to inhibit opiate involvement in behaviors other than pain responsitivity, CCK-induced satiety may result from an inhibition of opiate-stimulated feeding. In immunohistochemical studies, we have found a dense CCK fiber plexus in the dorsal PVN, a critical site for opiate-induced feeding. Direct microinjections of CCK to this region reduced short-term food intake by 28%. The findings presented here support the hypothesis that an opiate antagonistic function of CCK may account for several previously reported effects of this peptide. PMID- 3861128 TI - Neurochemistry of cholecystokinin in brain, pituitary, and cerebrospinal fluid. PMID- 3861129 TI - Psychopharmacological profile of cholecystokinin using the self-stimulation and the drug discrimination paradigms. PMID- 3861130 TI - Modulation of cholecystokinin gene expression. PMID- 3861131 TI - Molecular forms of cholecystokinin in the nervous system. PMID- 3861132 TI - [Testicular involvement in acute lymphoblastic leukoses. Consequences of radiotherapy and chemotherapy]. PMID- 3861133 TI - Hyperphagia: a necessary precondition to obesity? AB - Weight-gain is generally attributed to a caloric imbalance resulting from hyperphagia. However, this attribution is often made without observing caloric intakes during the initial accumulation of fat stores. Instead, this conclusion is drawn because many obese organisms overeat, and overconsumption is sufficient to cause weight-gain. The literature is reviewed, specifically those studies on the onset of caloric overconsumption relative to weight-gain and the accumulation of fat during food restriction, which suggests that hyperphagia is not necessary for animals prone to obesity to become fatter and heavier. It is observed that animals with genetically- and surgically-induced obesity often become fat prior to hyperphagia and continue to gain even if food restricted to subnormal levels. Overconsumption does speed this gain. PMID- 3861134 TI - Chemical modification of S-adenosylhomocysteinase by a water-soluble carbodiimide. AB - S-Adenosylhomocysteinase (EC 3.3.1.1) from rat liver is inactivated by 1 cyclohexyl-3-(2-morpholinoethyl)carbodiimide metho-p-toluenesulfonate (CMC) in a pseudo-first-order fashion. The rate of inactivation is linearly related to the concentration of the reagent, and a second-order rate constant of 4.94 +/- 0.27 M 1 min-1 is obtained at pH 5.5 and 25 degrees C. The inactivation does not involve change in the quaternary structure of the enzyme nor modification or release of the enzyme-bound NAD. Lack of modification at tyrosine, serine, cysteine, histidine, and lysine residues and the fact that the inactivation is favored at low pH suggest that the inactivation is caused by the modification of a carboxyl group. Statistical analysis of the relationship between the residual enzyme activity and the extent of modification, and comparison of the number of residues modified in the presence and absence of the substrate adenosine show that, among four reactive residues per enzyme subunit, only one residue which reacts more rapidly with the reagent than the rest is critical for activity. The CMC-modified enzyme binds adenosine and S-adenosylhomocysteine and is able to oxidize the 3' hydroxyl of these substrates, but apparently fails to catalyze the abstraction of the 4' proton of adenosine. PMID- 3861135 TI - Purification and characterization of galactocerebroside sulfotransferase from rat kidney. AB - Galactocerebroside sulfotransferase (EC 2.8.2.11) was purified to apparent homogeneity from rat kidneys. The purified protein is stable at -20 degrees C, and has an estimated molecular weight of 64,000 and a pI of 5.1. In contrast to other known sulfotransferases, the enzyme appears not to require divalent metal ions for activity. The Km for the donor, 3'-phosphoadenosine 5'-phosphosulfate, is 5.2 microM. Structural studies on this "active" sulfate donor show the requirement of a phosphate group at the 3' position of the ribose moiety. Modification of the amino group at either the 6 or 8 position on the purine ring renders the corresponding compounds poor substrates. Both galactosylceramide and lactosylceramide are effective acceptors for this enzyme, while galactosylsphingosine and galactosylglycerolipids are sulfated only poorly, suggesting that the in vivo sulfation of these glycolipids is carried out by different sulfotransferases. The active site of the enzyme contains arginine residues which appear to be important in binding the sulfate donor. The enzyme protein is hydrophobic and binds 0.17 mg [3H]Triton X-100/mg protein. The purified enzyme contains bound lipids, consisting primarily of cholesterol and phosphatidylcholine. The lipid environment affects the activity of the enzyme which, in turn, regulates the sulfation of glycolipids. PMID- 3861136 TI - [A case of acute promyelocytic leukemia complicated with severe esophageal stenosis caused by aclacinomycin A]. AB - Aclacinomycin A (ACM) is different from other anthracycline antibiotics in its antitumor activity and clinical effect. We report a case of acute promyelocytic leukemia complicated with severe esophageal ulcer by BH-AC . AMP therapy. The patient was 24 years old. In 1983, he achieved complete remission with BH-AC . DMP therapy but we confirmed relapse in April, 1984. ACM caused nausea, vomiting, diarrhea, alimentary tract bleeding and sore throat, together with a complication of esophageal stenosis. In about half of 10 cases receiving BH-AC . AMP therapy in our hospital, we noticed severe bleeding in the urinary treat, genital organs and alimentary tract. Care should therefore be taken with regard to mucosal injury when ACM therapy is used. PMID- 3861137 TI - Pernio. A possible association with chronic myelomonocytic leukemia. AB - Florid pernio occurred in an elderly man with chronic myelomonocytic leukemia (CMML). Previous case reports showed four elderly men with pernio and a hematologic disorder. Retrospective examination of the reported hematologic features of these cases enabled us to identify them as cases of CMML. Pernio preceded the diagnosis of the leukemia in all cases. We suggest that pernio may occur as an initial manifestation of CMML. The pathogenesis of pernio in association with CMML remains unclear. PMID- 3861138 TI - Intracervical versus intravaginal PGE2 for induction of labor at term in patients with an unfavorable cervix. AB - In a randomized double-blind study we evaluated the effects on cervical ripening and labor induction of 0.5 mg PGE2 in gel given intracervically and 2.0 mg PGE2 given as a vaginal suppository. All patients were at term with unfavorable cervical scores. The indications for induction were toxemia, diabetes mellitus, Rh-immunization, or intrauterine growth retardation. Significantly better results for both cervical priming and labor induction were obtained after intracervical PGE2-gel application than after treatment with placebo or vaginal suppositories. Eleven out of 19 patients (58%) were delivered within 24 h after intracervical PGE2-gel compared to two out of 19 patients given placebo (p less than 0.01). In patients not delivered 24 h after the start of treatment, the mean cervical score had changed from 3.7 to 6.0 (p less than 0.05) after PGE2-gel application compared to a change from 3.9 to 4.3 after placebo treatment (n.s.). The outcome after treatment with PGE2 suppositories did not differ significantly from that with placebo treatment. In a subsequent study 25 patients were given 0.5 mg PGE2 gel intracervically. The results were consistent with those obtained in patients receiving PGE2-gel intracervically in the double-blind study. Few side effects were noted. No patient complained of gastro-intestinal discomfort but increased myometrial activity was observed in two patients; one after placebo and the other after active intracervical PGE2-gel treatment. The hyperactivity was readily countered with the beta 2-agonist, terbutaline. All infants were born in good condition with Apgar scores of 7 or more within 5 min. At pediatric examinations at 1 week and at 6 months of age all children seemed healthy. PMID- 3861139 TI - Effects of prolonged cold storage on the responsiveness of isolated and perfused canine intermediate auricular artery. AB - Using the cannula inserting method, we investigated the effects of prolonged cold storage (5-7 days, at 4 degrees C) on vasoconstrictor responses of the isolated and perfused canine intermediate auricular artery to norepinephrine, tyramine, serotonin, histamine, prostaglandin F 2 alpha and potassium chloride. The vasoconstrictor responses to norepinephrine and potassium chloride were slightly enhanced by prolonged cold storage but not significantly, and those to serotonin and prostaglandin F 2 alpha were not influenced at all. On the other hand, the dose-response curve for tyramine shifted to the right in a parallel manner, and histamine-induced vasoconstriction was markedly potentiated by prolonged cold storage in a maximal increase in perfusion pressure. From these results, it is concluded that prolonged cold storage on the isolated canine intermediate auricular artery may not cause complete denervation of adrenergic nerve fibers and responsiveness to vasoactive substances except histamine remains almost the same in non-stored vessels. PMID- 3861140 TI - Effect of copper on blood serum xanthine dehydrogenase in rats given D-L ethionine. AB - Hepatic lesions by D-L-ethionine in rats produce a significant increase in the blood serum xanthine dehydrogenase activity. Cupric acetate is a potent inhibitor (Ki = 3.42 X 10(-6) M) of the xanthine dehydrogenase activity. Ethionine protects against the inhibitory effect of cupric acetate by formation of a copper complex with behaviour different from that of free ethionine. PMID- 3861141 TI - [Features of the intracellular repair of irradiated keratinocytes]. AB - By means of light and electron microscopy, intracellular reparation has been studied after a local x-ray radiation of the rat paws (7.74 X 10(-1) Ci/kg) using radioprotectors (mexamin, cysteamin, ionol) and other chemical compounds (including membranoprotective ones). Restoration of the intracellular structures after x-ray burns proceeds more slowly and more complexly than reparation of the epidermis as a tissue system. To the slowly repairing intracellular formations belong mitochondria and, especially, internal mitochondrial membrane, as well as intercellular contacts. Under radiation mitochondria increase their volume at the expense of their three-fold swelling. Preliminary treatment of the skin with some of the compounds mentioned above decreases or completely prevents these changes. By means of the membranoactive chemical compounds, as well as by means of the known radioprotectors it is possible essentially to normalize the process of intracellular reparation and physiological regeneration of the ultrastructures, and in some cases, to stimulate reparative processes in them. PMID- 3861142 TI - Anti-dental caries effect in rats and man of a bacteriocin purified from the oral bacterium Streptococcus mutans C3603. AB - Specific pathogen-free rats infected with Streptococcus mutans PS-14 (serotype c) and fed a cariogenic diet containing 380 parts/10(6) of bacteriocin, purified from Strep. mutans C3603, developed significantly fewer carious lesions than controls infected with Strep. mutans and fed the same diet without bacteriocin. The caries-inhibitory effect was 58.7 per cent. Oral appliances fixed with bovine enamel slabs were worn by volunteers to test bacteriocin C3603. The enamel slabs were treated with 500 parts/10(6) bacteriocin in 3 per cent sucrose solution for 10 min, 4 times daily, or with 3 per cent sucrose solution, 3 times daily, for 10 min and just before bedtime with 500 parts/10(6) bacteriocin once for 1 min. The bacteriocin exerted a strong inhibition of cariogenicity of sucrose. PMID- 3861143 TI - Chemical nature of collagen in the placoid-scale dentine of the blue shark, Prionace glauca L. AB - The dentine fraction was obtained from powdered placoid scales by differential density-flotation, and demineralized with 0.5 M EDTA. Monomeric alpha 1 and alpha 2 chains of collagen were extracted from the residual organic matrix, and the two alpha chains purified by chromatography. The two alpha chains were also isolated from shark-skin collagen. The corresponding alpha chains from shark dentine and skin collagens resembled each other closely in chromatographic and electrophoretic behaviour and in their CNBr-peptide maps but differed from calf skin alpha chains. The differences in the chemical composition between shark dentine and skin were due only to post-translational modification (hydroxylation and phosphorylation), indicating that the collagens are of the same type. The hydroxylation of prolyl and lysyl residues occurred more in the dentine alpha chains than in the skin chains. Among the four alpha chains, the phosphate content was the highest in the alpha 2 chain of the dentine collagen. These differences in hydroxylation and phosphorylation have been observed among alpha chains of mammalian mineralized and unmineralized tissues. The preferential dimerization to form alpha 1-alpha 2, characteristic of shark-skin collagen, was not observed in the dentine collagen. Other dimers were hardly detectable in the latter. PMID- 3861144 TI - The association between dietary sucrose consumption and microbial population shifts at six oral sites in man. AB - Sucrose-related microbial population shifts were evaluated at 6 oral sites in 22 volunteers, who consumed high-sucrose diets for 21 days followed by low-sucrose diets for 21 days. Culturing was performed at 0, 12, 21, 33 and 42 days of the 6 week experiment. Over 50,000 microbial isolates were characterized and analysed. Analysis of initial cultures showed the following site-specific microbial characteristics of the 6 sites evaluated: (1) molar fissures harboured higher levels of Neisseria species and showed the highest facultative-to-anaerobic ratio; (2) molar fissures and cervical buccal sites showed high Streptococcus sanguis levels and total Gram-positive cocci and fewer Gram-negative bacilli; (3) the tongue and saliva gave high concentrations of Streptococcus salivarius and Veillonella sp. Sucrose intake was positively related to concentrations of yeasts and Streptococcus mutans in the molar fissures; Actinomyces viscosus in the mandibular approximal site; Strep. mutans, Veillonella sp. and Lactobacillus sp. in the maxillary approximal site and Strep. salivarius on the tongue and in saliva. Sucrose intake was negatively related to concentrations of Neisseria sp. on the tongue and total Gram-positive bacilli in saliva. A definite ecological effect of sucrose on the oral microflora was confirmed. The high inter-subject and site variations of target bacteria and the generally low magnitude of shifts, however, discourage implementation of microbiological criteria in dietary assessments. PMID- 3861145 TI - Establishment and distribution of the bacteria Actinomyces viscosus and Actinomyces naeslundii in the mouths of monkeys (Macaca fascicularis). AB - The colonization of the mouth by the two Actinomyces species, postulated to be members of a basic plaque flora, was studied in 27 consecutively-born neonatal monkeys. Bacteria adherent to the tongue and cheek surfaces were sampled from each monkey soon after birth (mean age = 3.2 days). The tongue and cheek surfaces and the labial surfaces of the incisor teeth were sampled at 4, 8 and 12 weeks of age. From only one neonatal sample were Actinomyces species isolated. By 4 weeks of age, the incisor teeth are partially erupted and, from teeth erupted more than 1 mm, A. naeslundii was frequently isolated and its proportion increased between 4 and 8 weeks on all surfaces sampled. At 4, 8 and 12 weeks, the proportion of A. naeslundii on the incisor teeth was greater than on the mucosal surfaces. The isolation rate of A. viscosus was low in these neonates, but it was isolated from each of 6 juvenile monkeys fed a starch diet. In the 6 juvenile monkeys, the proportion of A. viscosus decreased following the introduction of a sucrose containing diet, whereas the proportion of A. naeslundii on the teeth increased. The early establishment of A. naeslundii and, to a lesser extent, A. viscosus in the dental plaque of neonatal monkeys fed exclusively by their mothers suggests that members of a basic plaque flora may be those bacteria establishing in the plaque during the period of breast-feeding. PMID- 3861146 TI - Differential termination times of enamel formation on human deciduous anterior tooth surfaces revealed by tetracycline labelling. AB - The positional relationships between the cervical-enamel margin and the intersecting point of a fluorescent (tetracycline) line in dentine, with the outer dentine surface or the dentine-enamel junction, were investigated by ultraviolet microscopy of the human deciduous anterior teeth. The results suggest that enamel formation (1) ended earlier on the mesial than on the distal surface in 18 instances and, nearly simultaneously on both of these surfaces in four, (2) ended earlier on the distal than on the labial surface in all 28 specimens and (3) ended earlier on the labial than on the lingual surface in 14 instances and nearly simultaneously on both of these surfaces in eight instances. PMID- 3861147 TI - Peripheral influences on the central pattern-rhythm generator for tongue movements in the rat. AB - Rhythmic activity in the tongue and other oral muscles was evoked by mechanical stimulation of the hard palate in ketamine-anaesthetized rats. The relation between neural discharges of single hypoglossal motoneurones and activity in the masseter and anterior digastric muscle, and stimulus parameters was analysed. By varying the stimulus parameters, hypoglossal-motoneurone activity was modulated from phasic reflex activity into rhythmic activity. The tongue and other recorded muscles are likely to be controlled by the same pattern-rhythm generator, when rhythmic activity is induced by palatal stimulation. Exteroceptive oral stimuli can activate the tongue pattern-rhythm generator independently of proprioceptive feedback. Proprioceptive input from oral structures influenced the burst duration of rhythmic hypoglossal motoneurone activity. The cycle duration and the number of discharges/burst, however, was not affected by proprioceptive input. The hypoglossal-motoneurone pool may be influenced by more than one pattern-rhythm generator because the burst characteristics of rhythmically-firing hypoglossal motoneurones depend upon stimulus conditions. These hypoglossal pattern-rhythm generators have possible hierarchic relations because a shift from one burst pattern into another can be evoked by changing stimulus conditions. The pattern rhythm generators for oral movements may be composed of a neural-pattern generator and a neural-rhythm generator, which can be modulated separately by peripheral inputs. PMID- 3861148 TI - Ca2+ sensitivities and transient tension responses to step-length stretches in feline mechanically-stripped single-fibre jaw-muscle preparations. AB - At a muscle length, Lo (just taut), isometric tension at constant levels of various Ca2+ activations and transient tension responses to rapid length stretches (less than 1 per cent of Lo within 2 ms) at maximal Ca2+ activation level were measured in temporal, masseter and digastric (anterior belly) muscles (2-3 mm long and 24-48 micron in diameter). Steady isometric tension increased in a sigmoid fashion with increasing Ca2+ concentration from about pCa 7.28 to 4.49 in temporalis, from about pCa 6.18 to 4.40 in masseter and from about pCa 5.82 to 4.40 in digastric. The maximum tension was 75.5 +/- 10.2 g/mm2 in temporalis, 44.7 +/- 14.1 g/mm2 in masseter, and 46.1 +/- 20.1 g/mm2 in digastric. In the resting state, the sarcomere length at Lo was 2.34 +/- 0.06 micron in temporalis, 2.20 +/- 0.08 micron in masseter, and 2.20 +/- 0.00 micron in digastric. When the sarcomere length was stretched from 2.20 to 2.34 micron (the sarcomere length of temporalis at Lo) in the masseter and digastric, the Ca2+ sensitivity increased without significant change of the maximum tension in either muscle. The transient tension responses in all three muscles showed two distinct phases; an immediate tension increase coincident with the length stretch followed by an exponential tension decrease. The mean value of the time constant in the second phase was 58.5 +/- 19.7 ms in temporalis, 58.5 +/- 12.6 ms in masseter, and 362.6 +/- 16.8 ms in digastric. Thus temporalis showed a higher Ca2+ sensitivity at Lo and a greater maximum tension-producing capability than the other muscles and the cross bridge turnover rate appears to be slower in digastric than in the others. PMID- 3861149 TI - Ultrastructural characterization of extracellular matrix vesicles in the mineralizing fronts of apical cementum in cats. AB - Fine structure and the organic-inorganic relationship in mineralized fronts of cementum was studied with post-embedding demineralization and staining method. Typical matrix vesicles were observed between apical cementum and cementoblasts. Some vesicles were enclosed by a unit membrane; others contained needle-like crystals. Cementum crystals were found on unstained sections as filament- and needle-like structures which disappeared completely on EDTA treatment; similarly shaped structures re-appeared following uranyl and lead staining. These findings suggest that matrix vesicles might act as initiators of additional cementogenesis and that crystal ghosts seen in cementum consist of organic materials. PMID- 3861150 TI - Age-related changes in the content of non-reducible crosslinks in rat mandibular bone. AB - Age-related changes in the content of non-reducible crosslink amino acids, pyridinoline and histidinoalanine, in rat mandibular bone were studied. The pyridinoline content markedly increased up to 12 months of age and thereafter slightly increased. The histidinoalanine content was low until 3 months of age, but thereafter increased significantly up to 24 months. Total collagen content remained constant throughout the experiment. From these results, pyridinoline and histidinoalanine may serve as markers for the maturation and senescence, respectively, of mandibular bone. PMID- 3861151 TI - Secondary syphilis with extensive oral manifestations. PMID- 3861152 TI - The fluoride content of some teas available in Australia. PMID- 3861153 TI - An unusual dental presentation of cat scratch disease. PMID- 3861154 TI - Differential dark field microscopy of acute ulcerative gingivitis. Case report. PMID- 3861155 TI - The palatally impacted cuspid tooth: a new surgical approach to treatment. PMID- 3861156 TI - Hepatitis B--a personal view. PMID- 3861157 TI - Caries promotion properties of human diets. PMID- 3861158 TI - Prilocaine in pregnancy. PMID- 3861159 TI - The importance of the lymphatic system. PMID- 3861161 TI - Restorative dentistry for children. PMID- 3861160 TI - Infective endocarditis. PMID- 3861162 TI - Periodontal implications of the adolescent cleft palate patient. PMID- 3861163 TI - Needle muscle biopsy: will it make open biopsy obsolete? AB - Seventy-five needle muscle biopsies have been performed in this department over the past two years. Adequate biopsies were obtained in 69 cases. In 40 cases a variety of neuromuscular conditions was seen, broadly categorised as necrotizing myopathy (10), neurogenic atrophy (7), metabolic myopathy (5), vasculitis (2), normal muscle (7), and non-specific changes (9). Twenty-nine cases were for muscular dystrophy carrier detection. There were no complications associated with the procedure. The technique is simple and quick, and can be performed on outpatients or in the ward. Needle biopsy is the method of choice for sampling skeletal muscle in most patients, although open biopsy is still indicated for certain conditions. PMID- 3861164 TI - Management of extra-sellar pituitary tumours with bromocriptine: comparison of prolactin secreting and non-functioning tumours using half-field visual evoked potentials and computerised tomography. AB - To determine whether prolactin secreting and non-functioning pituitary tumours respond differently in terms of shrinkage to bromocriptine, we prospectively studied ten consecutive patients (five with prolactinomas and five with non functioning tumours) complicated by extra-sellar extensions. No patient had received prior radiotherapy or bromocriptine and the mean dose and duration of bromocriptine treatment were identical in the two groups of patients. Objective evidence of tumour shrinkage was provided by serial half-field visual evoked potentials (VEPs) and computerised tomography (CT). All five prolactinomas were shown to shrink as assessed by improvement in VEP and four of the five as assessed by CT. In contrast, only one of the five patients with non-functioning tumours showed any improvement in VEP or CT. Macroprolactinomas frequently shrink rapidly when treated with bromocriptine, whereas non-functioning tumours seldom show such a dramatic response. PMID- 3861165 TI - Safety of thrice-weekly rifampicin for tuberculosis in South-East Asian refugees. AB - The incidence and types of adverse reactions to rifampicin (in combination with isoniazid, pyrazinamide, and ethambutol) have been studied in 86 South-East Asian refugees treated for tuberculosis in Australia. Most patients received daily therapy initially (mean 3.5 months) followed by supervised thrice-weekly treatment (mean 4.6 months). Minor adverse reactions occurred with similar frequencies during daily (5%) and intermittent (5%) treatment but in no case was modification of rifampicin dosage required. Withdrawal of pyrazinamide was necessary in two patients (2.3%) with clinical hepatitis. PMID- 3861166 TI - Wegener's granulomatosis: clinical features and outcome in seventeen patients. AB - Seventeen patients with Wegener's granulomatosis are reviewed. Eleven males and six females, with a mean age of 46.9 +/- 4.5 years, were followed for 35.7 +/- 9.0 months. Mean duration from time of onset of symptoms to diagnosis was 8.5 +/- 3.1 months. Constitutional symptoms (100%), lower respiratory tract involvement (93%), renal involvement (87%), and upper respiratory tract involvement (80%) were the most frequent clinical manifestations. Arthritis (60%), dermal vasculitis (60%), and inflammatory ocular disease (40%) were also common. Elevated ESR (94%), anemia (70%), and lymphopenia (77%) were frequent laboratory findings prior to treatment. Five patients had renal failure at presentation and two patients progressed from no renal involvement at presentation to renal failure at diagnosis, while five patients progressed from renal involvement without impairment at diagnosis to end-stage renal failure. Seven patients died; six of these deaths were related to active Wegener's granulomatosis. The patients with a severe systemic vasculitis, and renal involvement had a poor outcome while predominant respiratory disease had a good prognosis. PMID- 3861167 TI - Initial experience with physiological pacing. AB - Fifty patients, aged 23 to 88 years, with permanent rate-responsive dual chamber pacemakers were studied prospectively for 14.1 +/- 11.4 (S.D.) months after implantation to assess the benefits and complications associated with this technique. In 12 patients the device replaced a ventricular demand pacemaker. Minor complications associated with implantation occurred in one case. Atrial leads required repositioning because of increase in threshold and/or problems of sensing in five cases and ventricular leads in five. There were two patients with symptomatic pacemaker-related arrhythmias necessitating reprogramming; one patient with pacemaker-mediated tachycardia and one with pacemaker autoinhibition. Seven patients have died; one suddenly and possibly related to a pacemaker-triggered arrhythmia. Of 43 living patients, five are now programmed to the ventricular demand mode; two with atrial fibrillation, one with failed atrial lead repositioning, one with persistent sinus tachycardia, and one because of angina pectoris. Thirty-six of the 43 living patients are asymptomatic and a further six are symptomatically improved. All 12 patients changed from ventricular demand pacing have less symptoms. Rate-responsive dual chamber pacing is safe and appears to improve symptoms in most cases. Complications are infrequent and usually easily overcome. This mode of pacing should be considered in all patients with normal sinoatrial function in whom a permanent pacemaker is indicated. PMID- 3861168 TI - Optic nerve involvement in Graves' ophthalmopathy: a case report and review. AB - Optic neuropathy in Graves' disease is an uncommon, but potentially treatable cause of disabling visual loss. Optic nerve damage is probably secondary to compression by swollen extraocular muscles at the apex of the orbit. The visual loss is usually bilateral and insidiously progressive, although accelerated visual loss, fluctuations in vision, and features mimicking orbital cellulitis may occur. Ocular congestive symptoms and proptosis have no direct relationship to the severity of visual loss. Early diagnosis is facilitated by orbital CT scanning. Oral corticosteroids and radiotherapy, alone or in combination, are the primary modalities of medical treatment. Surgical decompression of the orbit can be used where medical approaches have failed. PMID- 3861170 TI - AIDS and hemophilia. PMID- 3861169 TI - Paraparesis with hemoglobin E-beta thalassemia. PMID- 3861171 TI - Subacute pulmonary hypertension due to carcinomatous microembolism. PMID- 3861172 TI - Time to treat cholesterol seriously. PMID- 3861173 TI - Guillain-Barre syndrome associated with Campylobacter infection. PMID- 3861174 TI - Iron overload associated with congenital pyruvate kinase deficiency and high dose ascorbic acid ingestion. PMID- 3861175 TI - Indomethacin therapy to control debilitating fever of unknown origin. PMID- 3861176 TI - Cholestyramine induced hyperchloremic metabolic acidosis. PMID- 3861177 TI - Fine needle marrow aspiration. PMID- 3861178 TI - Is the stomach a useful forensic clock? PMID- 3861179 TI - Presence of nucleosomal repeat in the transcribed alpha globin gene of induced murine erythroleukemia cells. AB - The sensitivity of the mouse alpha-globin gene to micrococcal nuclease and its nucleosomal repeat were studied in three different functional states of the gene: inactive in EAT cells, potentially active in uninduced MEL cells and active in induced MEL cells. The results show that: 1. The nuclease sensitivity of the gene differs in the three different functional states. 2. Both the coding and the 5' flanking regions of the induced actively transcribed gene show a typical nucleosomal repeat pattern. 3. Hypersensitive sites for micrococcal nuclease and for an endogenous nuclease appear upstream of the gene after induction of differentiation. PMID- 3861180 TI - Recombinant human interferon sensitizes resistant myeloid leukemic cells to induction of terminal differentiation. AB - Recombinant human leukocyte interferon (IFN-alpha A) inhibits growth of the human promyelocytic leukemic cell line HL-60 without inducing these cells to differentiate terminally. When IFN-alpha A is combined with agents capable of inducing differentiation in HL-60 cells, such as 12-O-tetradecanoyl-phorbol-13 acetate (TPA), cis or trans retinoic acid (RA) or dimethylsulfoxide (DMSO), growth suppression and induction of differentiation are dramatically increased. By growing HL-60 cells in increasing concentrations of TPA, RA, or DMSO, a series of sublines have been developed which are resistant to the usual growth inhibition and induction of differentiation seen when wild type HL-60 cells are exposed to these agents. Treatment of these resistant HL-60 cells with the combination of IFN-alpha A and the appropriate inducer results, however, in a synergistic suppression in cell growth and a concomitant induction of terminal differentiation. The ability of interferon to interact synergistically with agents which promote leukemic cell maturation may represents a novel means of reducing resistant leukemic cell populations. PMID- 3861181 TI - Selective effects of gold (III) on parathyroid hormone-, prostaglandin E2- and guanine nucleotide-sensitive adenylate cyclase. AB - Gold(III) (Au(III)) up to 0.25 microM increased parathyroid hormone- and prostaglandin E2-sensitive chick osteoblast adenylate cyclase activity without affecting 5'-guanylylimidodiphosphate-stimulated enzyme activity. Au(III) at 5-50 microM inhibited hormone- and nucleotide-mediated activation of adenylate cyclase. Basal adenylate cyclase activity was not influenced by Au(III) in the given concentrations. Treatment of membranes with 5'-guanylylimidodiphosphate prior to incubation with Au(III) prevented the inhibitory effect of Au(III) on adenylate cyclase. Our data suggest that Au(III) alters the response of adenylate cyclase to agonists most likely through interaction with specific sulfhydryl groups associated with the enzyme system. PMID- 3861182 TI - 1-Aminooxy-3-aminopropane, a new and potent inhibitor of polyamine biosynthesis that inhibits ornithine decarboxylase, adenosylmethionine decarboxylase and spermidine synthase. AB - 1-Aminooxy-3-aminopropane was shown to be a potent competitive inhibitor (Ki = 3.2 nM) of homogenous mouse kidney ornithine decarboxylase, a potent irreversible inhibitor (Ki = 50 microM) of homogeneous liver adenosylmethionine decarboxylase and a potent competitive (Ki = 2.3 microM) of homogeneous bovine brain spermidine synthase. It did not inhibit homogeneous bovine brain spermine synthase and it did not serve as a substrate for spermidine synthase. The compound did not inhibit tyrosine aminotransferase, alanine aminotransferase or aspartate aminotransferase, which are pyridoxal phosphate-containing enzymes like ornithine decarboxylase. The inactivation of adenosylmethionine decarboxylase was partially prevented by pyruvate, which is the coenzyme of adenosylmethionine decarboxylase, and by the substrate, adenosylmethionine. 1-Aminooxy-3-aminopropane at 0.5 mM concentration inhibited the growth of HL-60 promyelocytic leukemia cells and this inhibition was prevented by spermidine but not by putrescine. PMID- 3861183 TI - Partial purification and initial characterization of a novel differentiation factor for mouse myeloid leukemia cells. AB - We found cells spontaneously differentiated from mouse myeloid leukemia M1 cells were producing a strong differentiation factor in culture medium and established a method to prepare a large quantity of conditioned medium containing the differentiation factor. The factor purified over 4,000-fold from the conditioned medium showed a single peak due to a peptide on a TSK 3000PW column which was coincident with differentiation activity. The molecular weight of the factor estimated by high-performance gel filtration chromatography was 1,300, which is remarkably lower than the values reported for protein differentiation factors reported thus far. M1 cells were induced to differentiate into macrophage-like cells by the factor. PMID- 3861184 TI - Changes in the serum lipoprotein pattern induced by two low-fat diets with a different vegetable content in hypercholesterolemic patients. AB - Thirty-two hypercholesterolemic outpatients were treated by a conventional low fat diet (carbohydrate 56%; fat 25%; vegetable proteins 7%; animal proteins 12% of energy; P/S ratio 1.0). After 1 month T-C decreased by 11%, VLDL-C by 32%, LDL C by 8%, HDLt-C by 10% and HDL2-C by 11%. Thirty-two comparable patients were treated by a different low-fat diet which provided 69% of energy as carbohydrate, 19% as fat, 7% as vegetable proteins and 5% as animal proteins; P/S ratio was 1.3. After 1 month T-C decreased by 9% and LDL-C by 12%. VLDL-C, HDL2-C and HDL3 C did not change significantly. A cross-over study on 24 patients confirmed that both diets have lowering effects on T-C and LDL-C levels, but only the conventional low-fat diet decreases VLDL-C and HDL2-C. PMID- 3861185 TI - [Genetic study of properdin factor B in juvenile rheumatoid arthritis]. PMID- 3861186 TI - The boiling of instruments in general dental practice: a misnomer for sterilisation. PMID- 3861187 TI - A comparison of fibre-optic transillumination with bitewing radiographs. PMID- 3861188 TI - Inner city Britain: a challenge for the dental profession. A review of dental and related deprivation in inner city Newcastle upon Tyne. PMID- 3861189 TI - Ivor Whitehead memorial lecture. The professions in the dock: a clinical study. PMID- 3861190 TI - 'Medical or physical management of facial muscle and joint pain'. PMID- 3861191 TI - 'Six-monthly examinations for dental caries'. PMID- 3861192 TI - Forensic odontology. PMID- 3861193 TI - Acute myeloid leukaemia after treatment with razoxane. AB - Two new cases of acute myeloid leukaemia occurring after razoxane therapy are recorded and further haematological and cytogenetic details of two cases previously reported are described. The need for long-term follow-up after patients discontinue razoxane therapy is emphasized. PMID- 3861194 TI - Suppression of clonal evolution in two chronic myelogenous leukaemia patients treated with leucocyte interferon. AB - Two patients with Philadelphia chromosome-positive (Ph1+) chronic myelogenous leukaemia (CML) were treated with human leucocyte interferon (HuIFN-alpha). Karyotypic changes in addition to the Ph1 chromosome developed in these patients before the start of HuIFN-alpha treatment. In one patient the administration of HuIFN-alpha resulted in clinical haematological remission and stable suppression of the secondary Ph1 clone. The second patient was in myeloid blastic crisis when given HuIFN-alpha. While she was receiving HuIFN-alpha, suppression of the blast cell population in the bone marrow occurred. The subsequent cytogenetic changes included a near-complete suppression of a secondary Ph 1 clone of cells carrying a deletion in the short arm of chromosome 7 and partial population of the bone marrow with primary Ph1 clone. These observations suggest a potential role for interferons in altering the progressive course of CML. PMID- 3861195 TI - DNA and RNA determination in 111 cases of childhood acute lymphoblastic leukaemia (ALL) by flow cytometry: correlation of FAB classification with DNA stemline and proliferation. AB - Flow cytometry with acridine orange was used in 111 cases of childhood acute lymphoblastic leukaemia (ALL) to determine simultaneously DNA index, cell cycle distribution and cellular RNA content in bone marrow samples. The overall incidence of DNA aneuploidy in the population was 40%. Significantly higher incidence of DNA aneuploidy was present in the L2 (70.6%) as compared to the L1 (34.1%) group (P = 0.007), using the FAB classification. No difference in the frequency of normal and abnormal DNA stemlines was found between newly diagnosed and relapsed patients. The L2 group had significantly higher proliferation (S phase = 12.4%) than L1 (S phase = 5.8%) (P = 0.01), but RNA content was not significantly different. The aneuploid group had significantly more (P = 0.01) cases with L2 morphology (28.6%) compared to the diploid group (8%) and proliferation was higher in DNA aneuploid (S-phase = 9.5%) compared to DNA diploid (S-phase = 4.7%) leukaemias. Likewise, RNA content was significantly higher in aneuploid than in diploid ALL (P = 0.006). These correlations between morphology, cell kinetics and DNA index elucidate biological properties of leukaemic cells with potentially prognostic value. PMID- 3861196 TI - Treatment of CML blast crisis with low dose ARA-C. PMID- 3861197 TI - Differential binding of the fluorescent probe 8-anilinonaphthalene-2-sulfonic acid to rhodanese catalytic intermediates. AB - Studies have been performed to quantitate the binding of the fluorescent probe 8 anilinonaphthalene-2-sulfonic acid (2,8-ANS) to catalytic intermediates of the enzyme rhodanese: the sulfur-substituted form (ES) and the sulfur-free form (E). The molecular 2,8-ANS has not been extensively used for protein studies, and some characterization is presented to demonstrate its usefulness as a probe for apolar binding sites. The molecule 2,8-ANS binds to at least two classes of sites on rhodanese. One class (class 1) is present in the ES form and has a Kd of 1.7 mM. The E form of rhodanese appears to have a second class of sites (class 2) in addition to the class 1 sites. Two independent fluorometric methods of analyzing the class 2 binding of 2,8-ANS to the E form gave an average value for Kd congruent to 179 microM. These fluorometric titrations, together with a Job plot, clearly indicate that 2,8-ANS binds to more than one site on the E form of rhodanese. The apparent apolarity is slightly higher for class 2 sites than for the class 1 sites, but both give Z factors of greater than 85. The substrate thiosulfate is able to displace the probe that is bound to the class 2 sites on the E form of the enzyme. Further, 2,8-ANS is found to be a competitive inhibitor of the catalyzed reaction with an apparent Kd of 170 microM. Circular dichroism measurements detect no significant changes in the average conformation of rhodanese that can be ascribed to the presence of 2,8-ANS.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3861198 TI - Characterization of delta 4-3-ketosteroid-5 beta-reductase and 3 beta hydroxysteroid dehydrogenase in cell extracts of Clostridium innocuum. AB - Cell extracts prepared anaerobically from Clostridium innocuum and Clostridium paraputrificum reduced delta 4-3-ketosteroids to 3 beta 5 beta and 3 alpha 5 beta derivatives, respectively. delta 4-3-Ketosteroid-5 beta-reductase (5 beta reductase) from both organisms required NADH for activity. 5 beta-Reductase from C. innocuum had a pH optimum of 5.0. The substrate concentration at half-maximal reaction velocity was 4.2 microM, and a specific activity of 17 nmol product formed/h per mg protein was determined using 4-pregnen-3,20-dione (progesterone) as a substrate. delta 4-3-Ketosteroid-5 beta-reductase from C. innocuum reduced progesterone and testosterone, but not 4-cholesten-3-one, to corresponding 3-keto 5 beta derivatives. A relative molecular (Mr) weight of 80 000 was estimated for 5 beta-reductase using HPLC-gel filtration chromatography. 3 beta-Hydroxysteroid dehydrogenase in cell extracts of C. innocuum was oxygen sensitive and required NADH for activity. An Mr of 80 000 was estimated for 3 beta-hydroxysteroid dehydrogenase. However, 5 beta-reductase and 3 beta-hydroxysteroid dehydrogenase activities were separated using an HPLC-DEAE chromatography technique. PMID- 3861199 TI - Gamma-vinyl-GABA treatment of tardive dyskinesia and other movement disorders. AB - We conducted a single-blind trial of gamma-vinyl-GABA (GVG) in nine patients: seven with tardive dyskinesia, one with Meige syndrome, and one with Tourette syndrome. Five tardive dyskinesia patients completed the entire 11-week study and, as a group, demonstrated significant decreases in dyskinesia scores. Four of these five tardive dyskinesia patients showed clinically evident improvement, with approximately 30% reduction in dyskinetic symptoms. Other patients had no clinical benefit from GVG. Three patients had transient exacerbation of psychiatric symptoms after sudden withdrawal of GVG, and one patient experienced dose-related confusional episodes. Our results suggest that GABAergic drugs may have a role in treating patients with tardive dyskinesia. PMID- 3861200 TI - EEG-monitored sleep in anorexia nervosa and bulimia. AB - We compared the EEG-monitored sleep of 8 women with anorexia nervosa and 16 normal weight women with bulimia to that of 14 normal women. The patients with anorexia nervosa spent less time asleep and spent less of their sleep time in Stage 1. The sleep of the normal weight patients with bulimia was remarkably similar to that of the controls. These data suggest that most patients with anorexia nervosa and bulimia do not exhibit the type of sleep disturbances characteristic of patients with major depressive illness. PMID- 3861202 TI - [Effect of different doses of water-soluble retinoic acid on the lipid and 3-beta ol steroid dehydrogenase concentration in the interstitial tissue and supporting cells of the testes of mice]. AB - A study was made of the influence of various doses of water-soluble retinoic acid on the concentration of lipids and 3-beta-ol steroid dehydrogenase (SD) in the interstitial tissue (IT) and supporting cells (SC) of mouse testicles. Three groups of animals were injected with 1% retinoic acid i. p., with the doses injected being 0.1, 0.2 and 0.3 ml respectively. After the termination of experiments the animals were sacrificed and the cryostat sections 9 micron thick were stained for lipids and 3-beta-ol in the testicles. It was found that water soluble retinoic acid is capable of exerting an essential influence on the steroid-producing system of the testicles. At the same time retinoic acid injected in the doses 0.1 and 0.2 ml causes an elevation of the content of lipids and 3-beta-ol SD in the IT and SC of the testes producing Leydig's cells that furnish the internal secretion of the testicle. Injection of 0.3 ml retinoic acid brings about a decrease in the concentration of 3-beta-ol SD in the IT and SC as compared with the dose 0.2 ml. However, in the IT the activity of the enzyme remains higher than in control, whereas in the SC it falls below the control values. The lipid content in the IT and SC changes differently, namely it rises in Leydig's cells and diminishes in Sertoli's cells as compared with the effect of 0.3 ml acid. It may be suggested that injection of large doses of retinoic acid entails alterations primarily in the synthesis of sex steroids, whereas the storage of lipoid substances that serve as substrate remains at a high enough level. PMID- 3861201 TI - [Induction of lipid peroxidation in the erythrocytes during cholesterol oxidation catalysed by cholesterol oxidase]. AB - Using the chemiluminescence technique to assay the activity of cholesterol oxidase it has been shown that enzymic oxidation of cholesterol to cholest-4-en-3 one red cell membranes is accompanied by accumulation of lipid peroxidation products--malonyl dialdehyde (MDA). The amount of MDA formed was dependent on the amount of cholesterol oxidized. The free radical scavenger 4-methyl-2,6 ditretbutylphenol, the transition metal chelator EDTA and catalase inhibited lipid peroxidation in red blood cells. The participation of OH radicals in the initiation of lipid peroxidation in red cell membranes in the course of cholesterol oxidation is discussed. PMID- 3861203 TI - Monoclonal antibody-mediated cytotoxicity of human myeloid leukemia cells: an in vitro model for estimating efficiency and optimal conditions for cytolysis. AB - Monoclonal antibodies (MoAbs) to myeloid differentiation antigens have a potential use in purging bone marrow of leukemia cells in autologous bone marrow transplantation (ABMT) therapy for acute myelogenous leukemia (AML). Because the efficiency of purging by MoAb and complement (C) is important to the success of ABMT, we have designed an assay to determine optimal conditions for leukemia cell lysis. In order to mimic the conditions of remission bone marrow, normal buffy coat cells were mixed with cells from the HL-60 promyelocytic leukemia cell line at a concentration that approximated the normal-leukemia cell ratio found in remission marrow. The cell mixture was treated at variable times and temperatures in the presence of C and PM-81, an IgM MoAb that reacts with both normal granulocytes and monocytes as well as with HL-60 cells. PM-81 binds to the majority of cells from 90% of patients with AML yet does not react significantly with normal stem cell populations. Because of the potential use of PM-81 in ABMT, it seemed especially important to show that the antibody was capable of mediating cytotoxicity of HL-60 cells in the presence of an excess of antigen-positive cells. A clonogenic assay that permitted the growth of HL-60 cell colonies but not normal progenitor cells in methylcellulose cultures was used to measure the efficiency of HL-60 cell lysis. We found that under certain conditions, PM-81 was capable of removing the small percentage of HL-60 clonogenic cells admixed with normal buffy coat cells. This information was useful for determining the optimal conditions for purging bone marrow of leukemia cells for ABMT. PMID- 3861204 TI - Production of leukemic blast growth factor by a human bladder carcinoma cell line. AB - Circulating blast cells from the peripheral blood of acute myeloblastic leukemia patients include a subpopulation capable of colony formation in the presence of phytohemagglutinin-stimulated leukocyte-conditioned medium (PHA-LCM). We describe the complete replacement in the blast assay of PHA-LCM by conditioned medium from a human bladder carcinoma cell line, HTB9. Both conditioned media contain a stimulator of blast cell growth that elutes as a single peak from a Sephadex G100 column with an apparent molecular weight of 30,000. It is shown that this leukemic blast growth factor is distinct from erythroid-potentiating activity (EPA) and possibly granulocyte macrophage colony-stimulating factor. PMID- 3861205 TI - Reduction of urinary excretion of PGE2 and 6 keto PGF1 alpha by tiaprofenic acid. AB - Tiaprofenic acid (Surgam, Cassenne) was administered intravenously to saline diuretic conscious rats, at doses of 2, 10 and 25 mg kg-1 body weight. Tiaprofenic acid significantly reduced urinary prostaglandin E2 (PGE2) and 6 keto PGF1 alpha excretion, at all three doses employed. The extent of the reduction was similar for both PGE2 and 6 keto PGF1 alpha output; hence no evidence of 'selectivity' (i.e. sparing of PGI2 synthesis) was observed. Tiaprofenic acid was also administered to rats receiving an infusion of 5% dextrose. The dose employed (0.5 or 1 mg kg-1 body weight) was submaximal and elicited reductions in PGE2 output to values still more than 60% of the control period values. In this group of animals, the percentage change in 6 keto PGF1 alpha excretion was again not significantly different from that of PGE2. The maximal extent of reduction in urinary PGE2 excretion with tiaprofenic acid (25 mg kg-1 body weight) was not significantly different from that elicited by indomethacin (10 mg kg-1 body weight), although the time course of the reduction was different. PMID- 3861206 TI - Inhibition of monoamine oxidase in 5-hydroxytryptaminergic neurones by substituted p-aminophenylalkylamines. AB - A series of substituted p-aminophenethylamines and some related compounds were examined with regards to the inhibition of monoamine oxidase (MAO) in vivo inside and outside 5-hydroxytryptaminergic neurones in the rat hypothalamus. This was recorded as the protection against the irreversible inhibition of MAO produced by phenelzine by determining the remaining deaminating activity in the absence and presence of citalopram using a low (0.1 microM) concentration of [14C]-5 hydroxytryptamine (5-HT) as substrate. Some of the phenethylamines were much more potent inside than outside the 5-hydroxytryptaminergic neurones. This neuronal selectivity was antagonized by pretreatment of the rats with norzimeldine, a 5-HT uptake inhibitor, which indicates that these compounds are accumulated in the 5 HT nerve terminals by the 5-HT pump. Selectivity was obtained for compounds with dimethyl, monomethyl or unsubstituted p-amino groups. An isopropyl group appears to substitute for the dimethylamino group but with considerably lower potency. Compounds with 2-substitution showed selectivity for aminergic neurones and this effect decreased with increased size of the substituent. The 2,6-dichloro derivative FLA 365 had, however, no neuronal selective action but was a potent MAO inhibitor. Substitutions in the 3- and 5-positions decreased both potency and selectivity. Prolongation of the side chain with one methylene group abolished the preference for the MAO in 5-hydroxytryptaminergic neurones although the MAO inhibitory potency remained. The selectivity disappeared by increasing the alpha substituent to an ethyl group but remained for the alpha,alpha-dimethyl substituted derivatives. It is concluded that compounds which are (1) transported by the 5-HT pump and (2) potent reversible MAO-A inhibitors produce pronounced inhibition of MAO in 5-hydroxytryptaminergic neurones. PMID- 3861208 TI - The effect of mouse spinal cord transection on the antinociceptive response to the gamma-aminobutyric acid agonists THIP (4,5,6,7-tetrahydroisoxazolo [5,4 c]pyridine-3-ol) and baclofen. AB - The antinociceptive responses to the gamma-aminobutyric acid receptor agonists THIP (4,5,6,7-tetrahydroisoxazolo[5,4-c]pyridine-3-ol) and baclofen were examined in spinally transected mice to define the central nervous system site of action for these drugs. Nociception was assessed using a tail-immersion assay. The results indicated that spinal transection (T6-T10) completely abolished the antinociceptive responses to THIP and baclofen, attenuated those to oxotremorine and morphine, but did not reduce the response to clonidine. The results suggest that the antinociceptive responses to THIP and baclofen are mediated by an action at supraspinal sites rostral to T6. PMID- 3861207 TI - Perfusion of vasopressin within the rat brain suppresses prostaglandin E hyperthermia. AB - These experiments were undertaken to determine whether arginine vasopressin (AVP) could suppress a prostaglandin hyperthermia and to localize sites of these actions in the rat. Prostaglandin E2 (PGE2) sensitive sites were localized in the ventral-septal area by microinjecting 200 ng/0.5 microliter of prostaglandin E2. During perfusion with an artificial CSF, PGE2 injected into the lateral cerebral ventricle evoked a hyperthermia of more than 1 degree C. Perfusion of 6.5 micrograms/ml of AVP markedly attenuated the PGE2-induced hyperthermia. These results suggest that AVP suppresses PGE2-induced hyperthermia in sites in which PGE2 evokes an increase in core temperature. PMID- 3861209 TI - Patterns of hyperphagia in the Zucker obese rat: a role for fat cell size and number? AB - The hypothesis that adipocyte size and number influence feeding behavior, via as yet unidentified signals to the CNS, is reviewed. The proposal is made that, due to several metabolic alterations which favor lipid deposition, the genetically obese Zucker rat (fafa) may be an appropriate model in which to study feeding adipose tissue relationships. Data from several studies are presented demonstrating that the developing male Zucker fatty rat displays hyperphagia during the growth period which reaches a peak, or "break point," and then declines such that intake of fatty and lean rats becomes comparable at approximately 20 weeks of age. Beyond week 20, cycles of hyperphagia of several weeks' duration can be detected in fatty rats. The above feeding changes are related to data showing that on a laboratory chow-type diet, adipocytes approach maximal size at 15-16 weeks in the fatty rat, while accelerated proliferation of adipocytes takes place following week 20. During growth, responding for food in an operant task by fatty rats varies in accord with the pattern of hyperphagia. Further studies in the fatty rat show that the duration and magnitude of developmental hyperphagia can be altered by manipulating the caloric density and macronutrient content of the diet, with fat containing diets leading to the earliest break point of developmental hyperphagia. Some theoretical problems with the notion of adipose tissue feedback control of feeding behavior are discussed. PMID- 3861211 TI - Dental health education: a school visits programme for dental students. Part 1. The school visits project. PMID- 3861210 TI - Caries prediction and its evaluation in 13 to 15 year-old schoolchildren. PMID- 3861212 TI - Changes in dental caries prevalence in Edinburgh children over three decades. PMID- 3861213 TI - Dental health education: a school visits programme for dental students. Part 2. Influence on dental students. PMID- 3861215 TI - Education for wellness. PMID- 3861214 TI - Utilization of oral health services among edentulous Finnish adults: an epidemiological and econometric analysis. PMID- 3861217 TI - The Strathclyde fluoridation case. PMID- 3861216 TI - Sugar based medicines and dental disease. PMID- 3861218 TI - [Occlusal anomalies and electromyographic silent period in healthy subjects]. PMID- 3861220 TI - Occlusion: the posterior composite with strength and durability. PMID- 3861219 TI - [Electronic pantography. Clinical values--diagnostic values]. PMID- 3861221 TI - The professional liability insurance crisis. PMID- 3861222 TI - Consider exam-only first appointments. PMID- 3861224 TI - Cruise ship dentistry. PMID- 3861223 TI - Dental care program for infants. PMID- 3861225 TI - The Code of Ethics for Ontario dental hygienists: two case studies. PMID- 3861226 TI - Synthetic retinoids in dermatology. PMID- 3861227 TI - Case report of vasopressin-responsive diabetes insipidus associated with chronic myelogenous leukemia. AB - A sixth case in the world literature is reported of a 59-year-old male with diabetes insipidus (DI) associated with chronic myelogenous leukemia (CML). The patient is unique in that his CML was diagnosed 10 years before he presented with vasopressin-responsive DI. Radiation to the central nervous system failed to reduce the daily requirement of his need for vasopressin. PMID- 3861228 TI - Histologic evaluation of necrosis in osteosarcoma induced by chemotherapy. Regional mapping of viable and nonviable tumor. AB - The predominant sites of viable and nonviable tumor were determined in the primary lesions of 50 patients with osteosarcoma after initial treatment with preoperative chemotherapy. The degree of tumor destruction was classified as good, fair, and poor and a map of the sites revealing viable and nonviable tumor was constructed. The study revealed several preferential sites where viable tumor was likely to persist: soft tissues, cortex, subcortex, ligaments, and areas in contact with cartilage (growth plate and/or articular cartilage). Localized areas of hemorrhage and necrosis, designated "lacunae," were noted within the tumor. They were frequently surrounded by bundles of viable tumor and appeared to correlate with open surgical biopsies. Factors responsible for this phenomenon and the persistence of viable tumor are discussed. The findings have important implications in the design of surgical treatment and in the use of needle biopsies to determine the effects of preoperative treatment. PMID- 3861229 TI - Bone marrow necrosis in children with malignant disease. AB - The authors reviewed the case records of 1419 children with acute leukemia and other types of malignant disease involving the bone marrow to define the clinical and laboratory features associated with marrow necrosis as well as the prognostic significance of this complication. Only seven patients were found to have this abnormality: four with newly diagnosed acute lymphoblastic leukemia (ALL), one with relapsed ALL, and two with disseminated neuroblastoma. All patients presented with severe bone pain, bone tenderness, and fever. Levels of serum lactic dehydrogenase were uniformly increased, being especially high in patients with ALL. There was no evidence of severe infection or disseminated intravascular coagulation, complications that have been causally related to marrow necrosis. Four of the five children with ALL remain in complete remission for 10+ to 48+ months. Both patients with neuroblastoma are off therapy, in remission, for 9+ to 15+ months. In contrast to earlier reports, bone marrow necrosis does not appear to confer a poor prognosis in children with malignancy. PMID- 3861230 TI - Monocytic leukemia in infancy. A review of eight children. AB - The clinical and pathologic features of eight infants with monocytic leukemia are reviewed. The children were all aged 12 months or less at diagnosis and had a high incidence of extramedullary features, skin infiltration being particularly common. The diagnosis was established by conventional morphologic and cytochemical techniques. Using the French-American-British (FAB) classification, five infants had FAB 5a disease, and three had FAB 5b. The difficulties in making the diagnosis from extramedullary sites and the overlap that exists at this age between monocytic leukemia, true histiocytic lymphoma, and malignant histiocytosis are discussed. The treatments given to the group and their response are reviewed. Five of the patients received VP-16-213 and cyclophosphamide as primary induction chemotherapy, a combination that merits further evaluation in leukemia with monocytic features. PMID- 3861231 TI - Preservation of cytometric DNA distribution and epithelial marker expression after tumor progression of human large bowel carcinomas. AB - Tumor specimens were obtained from seven patients with large bowel carcinomas at operation of the primary neoplasm and by resection of local recurrences or metastases 2 1/2 to 36 months later. All specimens were evaluated with regard to nuclear DNA distribution as measured by flow cytometry and expression of carcinoembryonic antigen (CEA), secretory component, epithelial IgA, and HLA-DR antigens, as determined by immunofluorescence staining of tissue sections. Both the DNA distributions and the immunohistochemical staining patterns were similar in the primary and secondary tumors. These findings are in keeping with a monoclonal or oligoclonal tumor progression in advanced large bowel carcinoma. PMID- 3861232 TI - Clinical significance of bone morphogenetic activity in osteosarcoma. A study of 20 cases. AB - Bone morphogenetic activity of osteosarcomas from 20 patients was assayed. The activity was demonstrated as ectopic bone formation on implantation of a lyophilized fraction of the tumor into athymic nude mice in 8 of 20 cases. Osteosarcomas producing bone morphogenetic protein (BMP) differed in clinical features from those not producing BMP. They were characterized radiologically by perpendicular spicules, histologically by osteoblastic type cells, and clinically by an increased serum alkaline phosphatase level, relative resistance to preoperative chemotherapy with Adriamycin (doxorubicin) plus high-dose methotrexate, and a tendency to metastasize to other bones and the lungs. PMID- 3861233 TI - Treatment of acute myelogenous leukemia in adults with N4-behenoyl-1-beta-D arabinofuranosylcytosine. AB - Forty-five previously-untreated adult patients with acute myelogenous leukemia (AML) were treated with N4-behenoyl-1-beta-D-arabinofuranosyl-cytosine (BHAC) in a multi-institutional cooperative study. Among 41 evaluable patients, 15 (36.6%) achieved complete remission (CR) and 10 (24.4%) achieved partial remission by daily administration of 3 to 8 mg/kg of BHAC. Higher daily doses (5 mg/kg or more) produced higher CR rates, and all of the CR were observed among the patients receiving a total BHAC dosage of 50 mg/kg or more in a period of 10 days or more. The side effects were mild and acceptable: nausea-anorexia was observed in 27% of the patients and vomiting in 17%. The results of this study thus indicate BHAC to be effective for remission induction of AML, and to deserve further clinical trials in combination with other anti-leukemic drugs. PMID- 3861234 TI - Rearrangement and possible amplification of the ribosomal RNA gene sites in the human chronic myelogenous leukemia cell line K562. AB - We have studied the location of the nucleolar organizer regions (NORs) in the human chronic myeloid leukemia cell line K562. In man, the NORs are normally found on the short arms of the acrocentric chromosomes. We show that in the K562 line, the NORs are substantially rearranged with both insertional and terminal NORs. In addition, the putative t(15;17) marker chromosome had three insertional NORs that may have arisen through gene amplification. PMID- 3861235 TI - The significance of cytogenetic findings of erythroid colonies derived from a Ph+ ALL patient: fundamental differences between Ph+ ALL and blastic phase CML. AB - Cytogenetic analysis was performed on colonies from erythroid burst-forming units (BFU-E) derived from bone marrow (BM) cells of a Ph-positive acute lymphocytic leukemia (Ph+ ALL) patient. A normal diploid karyotype was revealed in all 15 metaphases that could be analyzed in the erythroid colonies. Previous cytogenetic analyses of erythroid colonies obtained from BM cells of patients with Ph+ chronic myelogenous leukemia (CML) revealed that Ph-positive karyotypes were predominant in all 11 cases. Two of them were also examined in blastic phase (BP) and showed 100% Ph+ cells in BFU-E-derived colonies. The present findings suggest that the leukemic process of Ph+ ALL does not involve the erythroid series, which is in contrast to the involvement in CML. This is considered to be a fundamental difference between Ph+ ALL and the blastic phase of CML (BP CML). Clinically, cytogenetic analysis of erythroid colonies from BM cells may constitute a valuable approach for the differential diagnosis between Ph+ ALL and the BP of Ph+ CML. PMID- 3861236 TI - Karyotypic evolution in Ph-positive chronic myeloid leukemia in relation to management and disease progression. AB - In a prospective study of 32 patients with chronic myeloid leukemia the frequency of chromosome abnormalities in addition to the Philadelphia chromosome (Ph) increased when the disease progressed. Before metamorphosis, 10 patients (31%) had developed additional abnormalities. Such abnormalities were present in three of them at the time of diagnosis; in the other seven, they were detected late in the chronic phase. New clonal abnormalities heralded or accompanied a more malignant phase of the disorder, usually a blastic leukemia. During metamorphosis, 78% of the patients had additional abnormalities, which in 68% of these cases comprised at least one of +8, +22q- or i(17q). Clones with additional abnormalities disappeared in eight cases, either spontaneously or in association with cytostatic therapy during the chronic or blastic phase. Involvement of chromosome #8, usually in the form of a trisomy, was found in 7 of 12 patients treated with busulfan, but was not found in any of the 10 hydroxyurea-treated patients, of whom 8 were splenectomized early during the chronic phase. Cells from the spleen, obtained by fine needle aspiration or splenectomy were cytogenetically examined in 18 cases during the chronic phase, but abnormalities in addition to the Ph were noted in only one patient, who was examined in the late chronic phase. The same abnormalities were present in bone marrow cells of this patient. PMID- 3861237 TI - Characterization of a differentiation-inhibitory activity from nondifferentiating mouse myeloid leukemia cells. AB - Mouse myeloid leukemic M1 cells are induced to differentiate by various differentiation inducers. Activity for inhibition of induction of differentiation of M1 cells (I-activity) has been found in conditioned medium of variant M1 cell clones resistant to differentiation inducers, and this I-activity has been shown to be closely associated with resistance of the cells to differentiation inducers. In this work, the I-activity in the conditioned medium of the resistant M1 cells was shown to bind to Carboxymethyl-Sepharose CL-6B and to be eluted with 0.27-0.4 M NaCl. The profile of gel filtration of I-activity from Sephadex G-200 indicated considerable heterogeneity in molecules with I-activity; the apparent molecular range of the main I-activity was 60,000-80,000. On chromatofocusing, the I-activity was eluted with Polybuffer 96-acetic acid at pH 8.8-9.0. The I activity was inactivated by treatment with trypsin or by heating at 75 degrees C for 30 min. Therefore, the main I-activity seemed to be due to a basic protein(s). PMID- 3861238 TI - Effects of verapamil on etoposide, vincristine, and adriamycin activity in normal human bone marrow granulocyte-macrophage progenitors and in human K562 leukemia cells in vitro. AB - We have examined the effects of verapamil on the cytotoxicity of etoposide, vincristine, and Adriamycin in human leukemia K562 cells as well as in normal human bone marrow granulocyte-macrophage progenitors (CFU-GM). Etoposide was 10 fold more potent against K562 cells than against normal human bone marrow CFU-GM. Similarly, vincristine cytotoxicity was about 10-fold greater against K562 cells than against human bone marrow CFU-GM. In contrast, Adriamycin exhibited little selectivity for K562 cells versus normal bone marrow CFU-GM during the 1-h incubation period of the experiments. In the presence of verapamil (2.5-10 microM), etoposide cytotoxicity was enhanced in both malignant and normal cells. Verapamil enhanced vincristine (0.1 microM) cytotoxicity in K562 cells but did not potentiate Vinca alkaloid toxicity in normal bone marrow CFU-GM. Adriamycin, on the other hand, did not display any calcium antagonist-mediated potentiation of cytotoxicity in either malignant or normal tissue. These results indicate that short-term (1 h) incubations with etoposide, vincristine, and Adriamycin yield different profiles of toxicities whether used alone or with chemosensitizing agents such as the calcium antagonists. These differences in activities are consistent with different mechanisms for intracellular disposition of these three classes of anticancer agents and are worthy of further investigation, especially with regard to combinations with calcium antagonists. PMID- 3861239 TI - Sex differences in indomethacin-sensitive 3 alpha-hydroxysteroid dehydrogenase of rat liver cytosol. AB - The 3 alpha-hydroxysteroid:nicotinamide adenine dinucleotide (phosphate) oxidoreductase (EC 1.1.1.50) of rat liver cytosol is indistinguishable from trans 1,2-dihydrobenzene-1,2-diol dehydrogenase (EC 1.3.1.20) (T.M. Penning, I. Mukharji, S. Barrows, and P. Talalay, Biochem. J., 222: 601-611, 1984) and has been implicated in the detoxification of ultimate carcinogens (H. R. Glatt et al., Science (Wash. DC), 215: 1507-1509, 1982). Using trans-1,2-dihydroxy-3,5 cyclohexadiene as a model substrate for trans-dihydrodiol proximate carcinogens, this study shows that the specific activity of 3 alpha hydroxysteroid:nicotinamide adenine dinucleotide (phosphate) oxidoreductase is 2 fold higher in the 40-75% ammonium sulfate fraction prepared from female rat liver cytosol than in similar fractions prepared from males. Comparable differences were also observed for the nicotinamide adenine dinucleotide dependent oxidation of 5 alpha-androstan-3 alpha-ol-17-one. Chromatofocusing of these cytosolic fractions separated the bulk of the protein from the dehydrogenase, which eluted as a single peak at pH 5.4. Examination of the protein profiles indicates that twice as much protein coeluted with the enzyme from female rat liver cytosol, suggesting that induction is responsible for the sex difference in enzyme activity. These differences were abolished by ovariectomy, while administration of a single dose of estradiol 3-sulfate (100 micrograms) to ovariectomized rats restored enzyme activity to within 90% of normal female levels. These findings suggest that ovarian estrogen is a natural inducer of rat liver 3 alpha-hydroxysteroid:nicotinamide adenine dinucleotide (phosphate) oxidase reductase/trans-1,2-dihydrobenzene-1,2-diol dehydrogenase. PMID- 3861240 TI - Specific protein phosphorylation in human promyelocytic HL-60 leukemia cells susceptible or resistant to induction of cell differentiation by phorbol-12 myristate-13-acetate. AB - The pattern of protein phosphorylation induced by phorbol-12-myristate-13-acetate (PMA) was analyzed by two-dimensional gel electrophoresis in human HL-60 leukemia cells, which are susceptible to induction of cell differentiation by PMA, and in cells from an HL-60 cell variant designated R-94 that are resistant to such an induction. Protein phosphorylation was detected by observing either a rapid acid directed charge shift of [35S]methionine-labeled protein or an increase in the amount of phosphate label in a 32P-labeled protein. The results indicated that PMA at 10(-7) M causes within 30 min after treatment the phosphorylation of at least ten different proteins in both the HL-60 and R-94 cells. Among these ten phosphorylated proteins, we identified a major cytoplasmic polypeptide (Mr approximately 64,000), a cytoskeletal protein (Mr approximately 56,000), a nonmuscle myosin light chain, and two proteins (Mr approximately 60,000 and 64,000) localized in or around the cell nucleus. Phosphoamino acid analysis of six of the ten phosphoproteins showed that they contain phosphoserine. None of these proteins contained phosphotyrosine or phosphothreonine. The R-94 cell variant was found to be capable of increased protein phosphorylation after PMA treatment; however, the level of phosphate incorporation reached only the level of the untreated HL-60 cells and thus fell far short of the level observed in the HL-60 cells after PMA treatment. It is suggested that the basis for the acquired resistance in R-94 cells towards induction of cell differentiation by PMA is a block in signal transmission involving phosphorylation of nuclear protein(s) following the binding of the inducer PMA to its receptor (protein kinase C). PMID- 3861241 TI - Characterization of a human ovarian adenocarcinoma line, IGROV1, in tissue culture and in nude mice. AB - A cell line, IGROV1, originating from an ovarian carcinoma of a 47-year-old woman was established in tissue culture and in nude mice. Maintained in monolayer cultures, IGROV1 cells exhibited a 20-h doubling time and highly tumorigenic properties. The s.c. injection of 2 X 10(6) cultured cells into nude mice gave rise to fast growing tumors, while the i.p. route induced a peritoneal carcinomatosis with ascites which killed the animals in 2 months. The epithelial morphology of IGROV1 cells was retained during in vitro and in vivo passages, as judged by both the light and the electron microscopes. Two cytogenetic markers characterize IGROV1 cells: a paracentric inversion of chromosome 3, and a translocation between chromosomes 2 and 5. The constitutional karyotype of the patient was normal. These characteristics make the IGROV1 cell line a suitable experimental model for the treatment of human ovarian carcinomas and for biological studies of human solid tumors. PMID- 3861242 TI - Chromatin structure of the c-myc gene in HL-60 cells during alterations of transcriptional activity. AB - HL-60 cells have an elevated level of cellular myc RNA due to an amplified c-myc gene. Subsequent to chemically induced differentiation of HL-60 cells, both cellular myc RNA levels (Grosso, L. E., and Pitot, H. C., Biochem. Biophys. Res. Commun., 119: 473, 1984) and myc-specific transcription decrease (Grosso, L. E., and Pitot, H. C., Cancer Res., 45: 847-850, 1985). We have compared the primary DNA structure, DNA methylation, and S1 nuclease sensitivity of the myc protooncogene in HL-60 cells before and after chemically induced differentiation. We find no change in the structure or methylation of the c-myc gene. The protooncogene is hypomethylated at CCGG sequences in the 5' region but is extensively methylated at sites detected by sequences homologous to the 3' exon or 3' flanking sequences. Four S1 nuclease-sensitive sites are detected prior to differentiation. After the induction of either myeloid or monocytic differentiation, three of the S1 nuclease-sensitive sites are present. The presence of the fourth S1 nuclease-sensitive site correlates with the transcriptional activity of this gene. PMID- 3861243 TI - Distribution and content of nuclear and cellular RNA among cell populations of acute lymphoblastic and nonlymphoblastic leukemia. AB - The RNA content of intact cells and isolated nuclei of normal human lymphocytes and mononuclear cell populations (containing at least 50% blasts) from patients with acute lymphoblastic leukemia (ALL) and acute non-lymphoblastic leukemia (ANLL) was measured by flow cytometry based on metachromatic red luminescence of acridine orange-stained cells. Relative nuclear RNA (n-RNA) and cellular RNA (c RNA) content was estimated in relation to luminescence of RNase-treated nuclei, which served as a standard. The mean values (+/- SE) of n-RNA were 22.6 +/- 3.2, 25.8 +/- 3.2, and 51.5 +/- 6.1 arbitrary units for normal lymphocytes, ALL, and ANLL cell populations, respectively. The mean values for c-RNA were 51.3 +/- 5.2, 71.9 +/- 11.3, and 128 +/- 13.4 for the same cell populations, respectively. The differences between normal lymphocytes or ALL and ANLL cell populations were statistically significant (t-test, with respect to both n- and c-RNA), while differences between normal and ALL populations were not. The proportions of n-RNA versus c-RNA were similar within all three types of cell populations. The intercellular variabilities with respect to n- and c-RNA among the G0/1 cell populations of all three types of cells were characterized by the coefficient of variation (CV) of the mean RNA and the third moment about the mean (MOM3). CV and MOM3 of c-RNA were significantly different between all three types of cell populations, whereas CV and MOM3 of n-RNA showed significant differences between control and leukemic cells. Thus, mean RNA, CV, and MOM3 of RNA on the cellular and nuclear levels of G0/1 cells discriminate normal lymphocytes, ALL lymphoblasts, and ANLL blast cells from each other fully on statistically significant levels. PMID- 3861244 TI - Myeloid differentiation-inducing factors produced by pokeweed mitogen-treated normal G1/0 lymphocytes but not chronic lymphocytic leukemia cells. AB - HL-60 human promyelocytic leukemia cells undergo myeloid differentiation and G1/0 specific growth arrest in response to an activity produced by pokeweed mitogen stimulated peripheral blood mononuclear cells. Elaboration of this myeloid differentiation inducing activity does not require lymphocytic proliferation or pokeweed mitogen induced B-lymphocyte differentiation. The activity is a product of initially stimulated G1/0 lymphocytes. It is not produced by proliferating lymphocytes. The activity is not elaborated by G1/0 peripheral blood lymphocytes of patients with chronic lymphocytic leukemia, cells which are proliferatively refractory to pokeweed mitogen stimulation. PMID- 3861245 TI - Characterization of the growth inhibition induced by tumor-promoting phorbol esters and of their receptor binding in A549 human lung carcinoma cells. AB - Exposure of A549 human lung carcinoma cells to 10(-8) M 12-O-tetradecanoylphorbol 13-acetate (TPA) resulted in a change in cell morphology and caused the arrest of cell growth. After 4-5 days of exposure to TPA the cells started to proliferate again. However, on removal of the cells from the culture flask and reseeding, the cells had regained their sensitivity towards TPA. Cells which were subcultured in the presence of 10(-8) M TPA for 9 weeks were permanently refractory to the growth-inhibitory properties of TPA. Incubation of A549 cells with [3H]phorbol 12,13-dibutyrate ([ 3H]PDB) showed that the cells possess specific phorbol ester receptors. Exposure of the cells to 10(-7) M PDB preceding the receptor binding assay led rapidly to a decline in the binding of 6 nM [3H]PDB, in case of preincubation for 24 h to 38% of the binding in cells not pre-exposed to PDB. The receptor binding capacity after pretreatment with PDB was only weakly decreased in the cells which were desensitized towards the TPA-induced growth inhibition. Thus the decrease in receptor binding on exposure to phorbol esters does not appear to cause the refractoriness of the cells towards the effect of TPA. It seems more likely that this decrease in binding capacity is part of the events by which phorbol esters cause inhibition of cell growth. PMID- 3861246 TI - Release of platelet-activating factor in human leukemia. AB - Cellular release of platelet-activating factor (PAF) was assessed in a series of human acute and chronic lymphoid and myeloid leukemias at presentation or in an active phase of the disease. PAF-like material, showing physicochemical properties similar to those of synthetic PAF and of PAF released from IgE sensitized rabbit basophils, was found in cultures of cells from 5 of 6 acute lymphoblastic leukemias (ALL) (2 of 2 T-ALL and 3 of 4 common ALL) and from 13 of 24 B-cell chronic lymphocytic leukemias after stimulation with ionophore A23187 with or without phytohemagglutinin in the presence of acetyl coenzyme A. On the other hand, PAF was released only from 2 of 10 acute myeloblastic leukemias; both of them were of the more mature monoblastic subtype or M5 according to the French American-British classification. Cells from all three cases of chronic myeloid leukemia studied were also capable of producing PAF. In eight cases of acute lymphoid and myeloid leukemia, the in vivo release of PAF was assessed by testing the plasma levels of this mediator. Only in two cases (one ALL and one acute myeloblastic leukemia) could detectable levels of circulating PAF be demonstrated; it is of interest that both of these cases showed clinical and hematological features of disseminated intravascular coagulation. No PAF was documented in the plasma of the five chronic leukemias tested (four B-cell chronic lymphocytic leukemias and one chronic myeloid leukemia). These findings indicate that lymphoid and myeloid leukemic cells have a different capacity of releasing PAF, possibly related to the level of cell differentiation rather than to an intrinsic property of the neoplastic cells. Furthermore, in some cases, an intravascular release of PAF may occur. PMID- 3861247 TI - Phase II evaluation of aclarubicin in advanced breast cancer: a Southeastern Cancer Study Group trial. PMID- 3861248 TI - Phase II study of mitoxantrone, aclarubicin, and diaziquone in the treatment of non-small cell lung carcinoma: an Eastern Cooperative Oncology Group study. PMID- 3861249 TI - The microflora associated with developing lesions of nursing caries. PMID- 3861250 TI - The microflora associated with the progression of incipient carious lesions of children living in a water-fluoridated area. PMID- 3861251 TI - Adenosine 5'-triphosphate content of Streptococcus mutans GS-5 during fluoride mediated death at low pH. PMID- 3861252 TI - Adenosine 5'-triphosphate content of Streptococcus mutans GS-5 during starvation in a buffered salt medium. PMID- 3861253 TI - Determination of salivary Streptococcus mutans level in a stable sucrose sulphasomidine-containing broth. PMID- 3861254 TI - Effect of human milk on plaque pH in situ and enamel dissolution in vitro compared with bovine milk, lactose, and sucrose. PMID- 3861255 TI - Enhancement of (salivary) remineralization by 'dipping' solutions. PMID- 3861256 TI - F- uptake inhibition by excess phosphate during fluoridated apatite formation. PMID- 3861257 TI - A polarized light microscopic study of progressive stages of enamel caries in vivo. PMID- 3861258 TI - A scanning electron microscopic study of progressive stages of enamel caries in vivo. PMID- 3861259 TI - Effect of calcium lactate and calcium lactophosphate on caries activity in programme-fed rats. PMID- 3861260 TI - Posttreatment benefits from participation in a school-based fluoride mouthrinsing program: results after up to 7 years of rinsing. PMID- 3861261 TI - The use of fibre-optic transillumination in the diagnosis of posterior approximal caries in clinical trials. PMID- 3861263 TI - Anorexia and bulimia: eating functions gone awry. PMID- 3861262 TI - Activity and synapse elimination at the neuromuscular junction. AB - The neuromuscular junction undergoes a loss of synaptic connections during early development. This loss converts the innervation of each muscle fiber from polyneuronal to single. During this change the number of motor neurons remains constant but the number of muscle fibers innervated by each motor neuron is reduced. Evidence indicates that a local competition among the inputs on each muscle fiber determines which inputs are eliminated. The role of synapse elimination in the development of neuromuscular circuits, other than ensuring a single innervation of each fiber, is unclear. Most evidence suggests that the elimination plays little or no role in correcting for errant connections. Rather, it seems that connections are initially highly specific, in terms of both which motor neurons connect to which muscles and which neurons connect to which particular fibers within these muscles. A number of attempts have been made to determine the importance of neuromuscular activity during early development for this rearrangement of synaptic connections. Experiments reducing neuromuscular activity by muscle tenotomy, deafferentation and spinal cord section, block of nerve impulse conduction with tetrodotoxin, and the use of postsynaptic and presynaptic blocking agents have all shown that normal activity is required for normal synapse elimination. Most experiments in which complete muscle paralysis has been achieved show that activity may be essential for the occurrence of synapse elimination. Furthermore, experiments in which neuromuscular activity has been augmented by external stimulation show that synapse elimination is accelerated. A plausible hypothesis to explain the activity dependence of neuromuscular synapse elimination is that a neuromuscular trophic agent is produced by the muscle fibers and that this production is controlled by muscle fiber activity. The terminals on each fiber compete for the substance produced by that fiber. Inactive fibers produce large quantities of this substance; on the other hand, muscle activity suppresses the level of synthesis of this agent to the point where only a single synaptic terminal can be maintained. Inactive muscle fibers would be expected to be able to maintain more nerve terminals. The attractiveness of this scheme is that it provides a simple feedback mechanism to ensure that each fiber retains a single effective input. PMID- 3861264 TI - The year ahead--an interview with CDA's new president. PMID- 3861265 TI - Caries removal system: preliminary case reports of four pediatric dental patients. PMID- 3861266 TI - [Accutane (isotretinoic acid)--a new human teratogen]. PMID- 3861267 TI - Studies on the effect of tellurium on experimental dental caries development in rat--a change of oral streptococcal flora by administration of sodium tellurite. PMID- 3861269 TI - What's your articulator IQ? PMID- 3861268 TI - Unravelling the mystery of myosteodontics. PMID- 3861270 TI - Streamlining dental procedures. PMID- 3861271 TI - One-write bookkeeping. PMID- 3861272 TI - Alginate powder hazards: are you safe? PMID- 3861273 TI - Platelets, endothelium, and vasospasm. PMID- 3861274 TI - Proposed pathogenesis of fibrositis. PMID- 3861276 TI - Changing concepts of cavity toilet. A review. PMID- 3861275 TI - Sulphate conjugation limits fluctuations in free catecholamines in phaeochromocytoma. AB - Sulphate conjugation represents an efficient mechanism for inactivating catecholamines (CA) with more than 80% of total noradrenaline (NA) and adrenaline (A) and nearly 100% of dopamine (DA), circulating as conjugates. Sulphate conjugation responds rapidly to changes in sympathetic activity and may buffer the haemodynamic and metabolic consequences of wide fluctuations in CA release in phaeochromocytoma. This hypothesis was tested in seven patients with phaeochromocytoma by consecutive measurements of plasma free and conjugated NA, under resting conditions, before operation and at least 4 weeks after tumour removal. Free and total (free plus sulphates) NA were markedly elevated before (4.3, s.e.m. = 1.8 and 13.7, s.e.m. = 4.4 ng/ml, respectively) compared with 1-4 months after surgery (0.48, s.e.m. = 0.13 and 1.8, s.e.m. = 0.53 ng/ml). A and DA were similarly elevated before surgery; after surgery, A was undetectable in three patients and DA was undetectable in all patients. Before surgery consecutive measurements of total NA, 5 min apart, were markedly different (18.8, s.e.m. = 4.8 and 12, s.e.m. = 3.1 ng/ml, respectively), whereas only small differences in free NA levels were present (4.0, s.e.m. = 1.5 and 4.4, s.e.m. = 1.8 ng/ml). In three patients, fluctuations in total NA concentration greater than 12 ng/ml were associated with either no change (one patient) or changes of 0.6 and 2.8 ng/ml in levels of free NA, respectively. Mean blood pressure varied less than 8 mmHg in these patients. These findings indicate that sulphate conjugation is a dynamic process which may limit wide fluctuations in free CA concentration during episodic secretory activity in phaeochromocytoma. PMID- 3861277 TI - External resorption of an unerupted tooth. PMID- 3861278 TI - Coping with dentists' professional stress-a general framework. PMID- 3861279 TI - Vision and visible light curing generators. PMID- 3861280 TI - Actinomycosis infection of the jaws--mode of action. PMID- 3861281 TI - In vitro comparison of several composite resins surface texture. PMID- 3861282 TI - Prediction of muscle and joint loads after segmental femur replacement for osteosarcoma. AB - The authors designed a mathematical model that simulated 28 proximal and distal femoral resections and reconstructions for tumor and then predicted muscle and joint forces during gait and stair climbing. Such models will become increasingly useful as improvements are available, as tumor patient longevity increases, and as the design and manufacture of custom devices become more common. Inertial property changes with surgery were minor and can be ignored for most purposes. For most simulations, physiologically reasonable muscle forces were predicted, suggesting that patients would be able to walk in a normal or near-normal fashion. Large joint and muscle loads were predicted after extensive muscle resections, particularly during stair climbing, suggesting that patients would limp. The quadriceps muscle group was sufficiently strong to allow normal gait with partial excisions. With complete quadriceps excision and transfers, however, high joint loads were predicted. Furthermore, if an endoprosthesis had inherent varus-valgus stability in such cases, the moments to be satisfied by the prosthesis would predispose to high interface stresses and loosening. If, conversely, the endoprosthesis did not have inherent stability, muscle forces in the remaining muscles would be unrealistically high, suggesting that such a patient would limp or require ambulation assists. PMID- 3861284 TI - Dual isotope scanning with gallium-67 citrate and technetium-99m radiopharmaceuticals. AB - The interpretation of Ga-67 scans is limited by the complex anatomic and physiologic distribution of Ga-67 and by the low resolution possible with this isotope. The use of a second isotope Tc-99m, tagged to an appropriate pharmaceutical allows the identification of anatomic landmarks. Computer acquisition of both the Ga-67 and Tc-99m images allows for subtraction of the Tc 99m images from the Ga-67 images and leads to precise localization of abnormal Ga 67 accumulations. Only a small percentage of the counts in the Tc-99m window are due to Ga-67 scatter and do not degrade the Tc-99m images. Cases illustrating the value of the dual-isotope technique are presented. PMID- 3861283 TI - Early onset myophosphorylase deficiency (Mc Ardle's disease) with absence of myophosphorylase protein on SDS electrophoresis. The role of the ischemic forearm test. AB - The authors present a case report of early onset myophosphorylase deficiency (Mc Ardle's disease) with absence of myophosphorylase protein on SDS-electrophoresis. The different varieties of myophosphorylase deficiency and the clinical investigations which may lead to the diagnosis are reviewed. In particular, the relevance and possible dangers of an ischemic forearm exercise test and the suggestion of using a needle biopsy as a preliminary screening in similar cases of metabolic myopathies are discussed. PMID- 3861285 TI - Adenocarcinoma of the cecum. Detection by gallium scintigraphy. PMID- 3861286 TI - Consensus development summaries. Limb-sparing treatment of adult soft-tissue sarcomas and osteosarcomas. National Institutes of Health. PMID- 3861287 TI - Calcium transport. Our internationally renowned research team. PMID- 3861288 TI - Communication & staff management. PMID- 3861289 TI - Murphy's Law in dentistry. Whatever can happen, will happen. PMID- 3861291 TI - Compression volume during mechanical ventilation: comparison of ventilators and tubing circuits. AB - Four ventilators (Puritan-Bennett MA-1 and MA-2, Emerson, and Bear I) and four commercially available disposable and nondisposable tubing circuits (Bennett nondisposable, Becton-Dickinson, Inspiron, and Life-line) were tested on a lung analog for differences in inspiratory-circuit compression volume. The compression ratio (Rc), equal to the gas volume compressed per cm H2O peak airway pressure, was calculated for each combination of ventilator and circuit at each of four compliance settings (0.15, 0.10, 0.05, 0.01 L/cm H2O) on the analog. Rc values ranged from 0.3 to 4.5 ml/cm H2O at the highest and lowest compliance settings, respectively, accounting for a reduction in delivered tidal volume of up to 20%. The Emerson ventilator with all tubing systems and the Bennett nondisposable circuit with each ventilator demonstrated slightly smaller compression volumes. Application of an inspiratory pause on the Bear I ventilator did not affect its compression characteristics. The clinical importance of compression volume and data from other ventilation systems are reviewed. PMID- 3861290 TI - Inhibition of luteal phase progesterone levels in the rhesus monkey by epostane. AB - This study examined the effect of epostane, a new antifertility drug, on normal and hCG-stimulated progesterone production during the luteal phase of the menstrual cycle in rhesus monkeys. When administered once each day for five days, epostane inhibited normal luteal phase progesterone levels in a dose-related fashion. Epostane also reduced the elevated luteal phase progesterone levels of animals treated with hCG indicating that the drug acts directly on the corpus luteum. These data suggest that epostane interferes with corpus luteum function in a primate and that the drug would be effective as an interceptive agent during early pregnancy. PMID- 3861292 TI - Polymers in contact lenses: an overview. PMID- 3861293 TI - Conformational state of lacrimal proteins adsorbed on contact lenses. AB - A circular dichroism study has been performed to investigate the conformational properties of lysozyme adsorbed onto new and worn hydrophilic contact lenses. Whereas the native state of the protein is retained immediately after adsorption, lysozyme appears to be substantially denatured in worn lenses. These findings support the hypothesis of an immune response, due to lysozyme denaturation, for reported eye diseases in contact lens wearing patients. Regeneration processes to remove adsorbed proteins leave on the lens traces of potentially noxious materials. A reasonably frequent lens replacement is accordingly recommended. PMID- 3861294 TI - Marginal corneal ulcers. PMID- 3861295 TI - Metabolites and enzymes in the corneal epithelium after extended contact lens wear. PMID- 3861296 TI - Pharmacological testing in the laser-induced monkey glaucoma model. AB - Glaucoma was induced in cynomolgus monkeys by photocoagulating the trabecular meshwork with the argon laser. Repeat treatments were often necessary and wide intraocular pressure fluctuations were characteristic. Baseline intraocular pressure was measured with a calibrated pneumatonometer hourly for six hours. On a succeeding day a baseline measurement was made, 50 microliter of the drug to be tested applied, and six hourly measurements of intraocular pressure repeated. The effects on intraocular pressure of timolol, epinephrine, pilocarpine, vanadate, prostaglandin F2 alpha (PGF2 alpha), forskolin, and corynanthine were tested in at least eight eyes. Significant (p less than 0.05) reductions of intraocular pressure were produced by 0.5% timolol, 2% epinephrine, 4% pilocarpine, 1% vanadate, 500 micrograms of PGF2 alpha and 1% forskolin. Five per cent corynanthine produced no significant lowering of intraocular pressure. Tonography revealed an increased outflow facility associated with the reduction of intraocular pressure 2 hours after the administration of 4% pilocarpine. This glaucoma animal model may be useful in investigating agents that lower intraocular pressure by a variety of mechanisms. PMID- 3861297 TI - Eating disorders in the young anorexia nervosa and bulimia: Part I. PMID- 3861298 TI - Resolution of disseminated granuloma annulare following isotretinoin therapy. AB - Disseminated granuloma annulare is often a chronic disorder that may prove refractory to treatment and lead to prolonged cosmetic disfigurement. In a patient with disseminated granuloma annulare that was unresponsive to multiple therapeutic regimens, administration of isotretinoin resulted in rapid clearing of nearly all lesions. To our knowledge this is the first reported case in which this agent was used to treat disseminated granuloma annulare. PMID- 3861299 TI - [Dental care and Social Security in Luxembourg]. PMID- 3861300 TI - [Marsupialization of a corono-dental cyst in children]. PMID- 3861301 TI - [Evaluation of an intradiploetic technic with the Villette syringe]. PMID- 3861302 TI - ["Scorpion tooth" or dilaceration of the central incisor]. PMID- 3861303 TI - [The effect of sugars and sugar alcohols on dental caries]. PMID- 3861305 TI - [Complications due to antibiotics]. PMID- 3861304 TI - [Current status of antibiotics in oral surgery]. PMID- 3861306 TI - [A bone packing method with phenol-formol]. PMID- 3861307 TI - [Electromyographic study of the function of the mandibular elevators in partially and totally edentulous patients]. PMID- 3861308 TI - The effect of retinoids on haemopoiesis--clinical and laboratory studies. AB - Retinoids affect the growth and differentiation of haemopoietic cells. Individuals deficient in retinoids become anaemic; replacement therapy with retinoids corrects the anaemia. Retinoids enhance the clonal proliferation of erythroid and myeloid precursors in soft-gel culture; all-trans-retinoic acid and 13-cis-retinoic acid are the most potent. Retinoids also induce the differentiation of HL-60 promyelocytes to functional granulocytes and can induce cells from other relatively mature, myeloid cell lines to undergo partial differentiation. Cells from less mature myeloid leukaemic lines are often resistant to induction of differentiation by retinoids. Like cells from established lines, relatively mature leukaemic cells (promyelocytes, myelomonoblasts) harvested from patients can undergo differentiation in vitro in the presence of retinoids. A few reports suggests that a minority of patients with myeloid leukaemia or preleukaemia who receive 13-cis-retinoic acid will have improvement in their haemopoiesis. Further studies are required to understand the mechanism of action of retinoids on the growth and differentiation of haemopoietic cells and to explore more fully the therapeutic potential of retinoids. PMID- 3861309 TI - Menstrual induction: surgery versus prostaglandins. AB - In most developed countries in which therapeutic abortions are legal, termination of pregnancy is performed at between 8 and 12 weeks of gestation. Because the complication rate after this procedure rises with increasing gestation, there would be many advantages in inducing abortion before the eighth week ('menstrual induction'). With the increasing availability of highly sensitive methods of detecting human chorionic gonadotropin, pregnancy can now be diagnosed as early as 10-14 days after conception. The uterus can be surgically evacuated safely and simply by suction aspiration under local anaesthesia. However, a safe and effective method of inducing abortion by medical means would be a useful and cheaper alternative. Of the potentially useful compounds, only derivatives of prostaglandins E and F administered by vaginal pessary have so far been shown to be effective. Although the rate of haemorrhage and infection is low, 10-30% of women experience moderate side-effects of pelvic pain, diarrhoea and/or vomiting. The possibilities are discussed of reducing the incidence of side-effects by different methods of release or using prostaglandins in combination with other compounds such as antigestogens which might lower the therapeutic threshold. PMID- 3861310 TI - The comparative safety of second-trimester abortion methods. AB - The comparative safety of methods used to perform second-trimester abortion is an important public health concern. Morbidity and mortality studies indicate that dilatation and evacuation (D & E) is safer than instillation abortion, which is safer than hysterotomy or hysterectomy. In the third phase of the Joint Program for the Study of Abortion, the adjusted relative risk of serious complications associated with intra-amniotic instillation of urea and prostaglandin F2 alpha (the safest abortifacient regimen) was 1.9 times that associated with D & E (95% confidence interval 1.2-3.1). Surveillance of abortion mortality in the United States from 1972 to 1981 revealed a death-to-case rate of 4.9 per 100 000 abortions associated with D & E, 9.6 with instillation methods, and over 60 with hysterotomy or hysterectomy. Little information exists on potential late sequelae of second-trimester abortion. D & E appears to be the safest method of second trimester abortion available in the United States. PMID- 3861311 TI - [Leukemia in tumor patients receiving chemotherapy]. PMID- 3861312 TI - [Light microscopic morphology of the nucleolus and its ultrastructural equivalent]. PMID- 3861314 TI - Challenges in clinical dental traumatology. PMID- 3861313 TI - Identification of a messenger ribonucleic acid fraction in human prostatic cancer cells coding for a novel osteoblast-stimulating factor. AB - Prostatic cancer is frequently associated with new bone formation although the tumor-derived factors responsible for changes in bone cell function have not been identified. We have examined the synthesis of osteoblast-stimulating factors in a cultured human prostatic cancer cell line (PC-3) and show that conditioned medium from PC-3 cells stimulate mitogenesis and alkaline phosphatase in cells with the osteoblast phenotype (cultured rat osteosarcoma cells) and collagen synthesis in fetal rat calvaria. In order to characterize tumor-derived gene products which stimulate cells of the osteoblast phenotype messenger RNA (mRNA) was isolated from PC-3 cells and microinjected into Xenopus laevis oocytes. mRNA-directed translation products which were secreted into the oocyte medium were collected and assayed for a number of osteoblast stimulating properties. Translation products from PC-3 mRNA-injected oocytes stimulated division of cultured osteosarcoma cells by 8-fold and increased DNA synthesis as measured by incorporation of [3H]thymidine into these cells. In addition, tumor-derived translation products stimulated the production of alkaline phosphatase activity, a marker enzyme for bone formation, in cultured osteosarcoma cells. Oocytes injected either with water or with mRNA from a tumor not associated with bone formation were devoid of these activities. Total mRNA from the human prostatic cancer cells was then denatured and fractionated by size by agarose gel electrophoresis. When individual fractions of mRNA were eluted from the gel, translated in Xenopus oocytes, and the secreted translation products were tested for alkaline phosphatase-stimulating activity on osteoblast-like cells, the majority of the activity could be recovered in a mRNA fraction which was approximately 1800 bases in length. These results indicate that the PC-3 prostatic cancer cell line synthesizes a mRNA of approximately 1800 bases which codes for a heretofore unrecognized osteoblast-stimulating factor. PMID- 3861315 TI - Allergenic potential of root canal sealers. PMID- 3861316 TI - Human pulpal response to composite resin restorations. PMID- 3861317 TI - Effectiveness and safety of a sonic vibratory endodontic instrument. PMID- 3861318 TI - Case history of a cyst. PMID- 3861320 TI - Multimeric complexes of differentiation-inducing protein bound to DNA. AB - Myeloid hematopoietic precursor cells are induced to differentiate by the macrophage and granulocyte differentiation-inducing protein MGI-2 (DF). This differentiation-inducing protein bound to double-stranded but not to single stranded mammalian DNA. The bound MGI-2 was not eluted by high salt, but was eluted by sodium dodecyl sulfate (SDS). MGI-2 also bound to double-stranded E. coli DNA, but with this DNA the bound MGI-2 was eluted by high salt. This indicated a difference in the binding affinities of MGI-2 to mammalian and E. coli DNA. MGI-2 bound to DNA was examined by electron microscopy. The results indicate that MGI-2 formed a multimeric complex with double-stranded DNA and that the size of the complex was correlated with the strength of protein binding to the DNA. The multimeric complex bound to DNA was disrupted by deoxyribonuclease. The data indicated that binding of this differentiation-inducing protein to DNA involves the formation of a multimeric complex in which the monomers are held together by DNA. It is suggested that the formation of such multimeric complexes of MGI-2 and DNA may allow activation of the multiple pathways of gene expression that is required for differentiation. PMID- 3861321 TI - Positive 111In-granulocyte scintigraphy in a patient with focal leukemic blast cell infiltrations. AB - A patient with acute myeloid leukemia was investigated with 111In-granulocyte scintigraphy to reveal possible sites of infection. 111In-granulocytes accumulated in areas of leukemic blast cell infiltration leading to a false positive scintigram. This possibility must be kept in mind when studying leukemic patients using labeled leukocytes. PMID- 3861319 TI - Inhibition of hormonally regulated adenylate cyclase by the beta gamma subunit of transducin. AB - Transducin (T), the GTP-binding protein of the retina activates the cGMP phosphodiesterase system, and presents analogies with the proteins GS and Gi which respectively mediate adenylate cyclase activation and inhibition by hormone receptors. These proteins are all comprised of an alpha subunit carrying the GTP binding site and a beta gamma subunit made of two peptides. The beta peptide (35 kd) appears similar in the three proteins. We demonstrate here that purified T beta gamma inhibits adenylate cyclase from human platelet membranes. This inhibition was observed when adenylate cyclase was stimulated by GTP, prostaglandin E1 (PGE1), NaF and forskolin, but not when stimulated by GTP(gamma)S. In the presence of GTP and forskolin, the T beta gamma-induced maximal inhibition was not additive with the alpha 2-receptor-induced adenylate cyclase inhibition mediated by Gi. Both inhibitions were suppressed at high Mg2+ concentrations, which as also known to dissociate T beta gamma from T alpha-GDP. This suggests that these adenylate cyclase inhibitions are due to the formation of inactive complexes of GS alpha-GDP with T beta gamma or Gi beta gamma. T beta gamma-induced inhibition did not require detergent and could be suppressed by simple washing. T beta gamma effects are dependent on its concentration rather than on its total amount. This suggests that T beta gamma can operate in solution with no integration into the membrane. Similar inhibitory effects of T beta gamma are observed on adenylate cyclase from anterior pituitary and lymphoma S49 cell lines. PMID- 3861323 TI - Induction of erythroid differentiation by cytoplast fusion in mouse erythroleukemia (Friend) cells. AB - An intracellular activity, which is induced by dimethyl sulfoxide (DMSO) or hexamethylenebisacetamide (HMBA) and leads to erythroid differentiation in mouse Friend cells, was characterized by cell fusion between genetically marked intact cells and cytoplasts. For this, a procedure for rapid selection of cybrids was devised by sensitizing non-fused cells with oligomycin. We were able to demonstrate that cytoplasts derived from DMSO- (or HMBA)-treated cells trigger erythroid differentiation upon fusion with UV-irradiated cells. The activity in the cytoplasts remained only transiently and its induction was inhibited by biologically active phorbol esters or cycloheximide. The activity, however, was not induced in cytoplasts by directly treating them with DMSO (or HMBA). These results indicate that (1) the intracellular erythroid-inducing activity is located in cytoplasts, (2) it acts in trans and induces erythroid differentiation as a dominant factor and (3) its production requires de novo nuclear protein synthesis. The mechanisms of the induction of the intracellular activity and of how it triggers erythroid differentiation are discussed. PMID- 3861322 TI - Pharmacokinetics of ceftizoxime. AB - The kinetics of ceftizoxime, a newly developed cephalosporin, were evaluated in 6 healthy subjects, with respect to its excretory pathways especially by the biliary route. Total, renal and biliary clearance were determined at two different steady states. Steady state was achieved by constant intravenous infusion (604.1 mg/h) over 6 h after an initial loading dose (750 mg); 1.5 h after discontinuation of that infusion, a further infusion was commenced at a lower rate (284 mg/h) over 3 h, the second steady state being reached 0.5 to 1.0 h later. The drug was mainly excreted by the kidneys (56.7 to 92.9% of the dose). Biliary excretion, measured by the duodenal perfusion and marker dilution technique, was low (0.2 to 7.8% of the dose). Urinary and biliary excretion as well as total clearance were not dose-dependent. However, there was pronounced interindividual variation in total (35.2 to 236 ml/min) and renal clearance (10.6 to 208 ml/min), which could both be explained by varying interindividual urinary flow rates (mean flow rate: 0.99 ml/min to 3.14 ml/min). Intraindividual variation in renal clearance was less pronounced, but in the same subject changes in renal clearance were correlated with changes in urinary flow rate. From the varying renal clearance, which exceeded the glomerular filtration rate at high urinary flow rates and was below it at low urinary flow rates, it can be concluded that, in addition to glomerular filtration, tubular secretion and tubular reabsorption are involved in the renal excretion of ceftizoxime.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3861324 TI - Production of erythropoietin by cloned malignant murine erythroid cells. AB - A specific immunological assay was used to demonstrate that the erythropoietic factor produced by the recently described FMuLV-induced murine erythroleukemic cell line IW32 is an authentic erythropoietin (epo). Several independent virus induced erythroleukemic and myeloblastic cell lines were tested for epo production. Among six erythroleukemic cell lines induced by FMuLV, another (NN10) was shown to produce epo by biological and immunological assays. Four Friend virus-induced erythroleukemias and four FMuLV-induced myeloblastic cells were negative. The amounts of epo produced were similar in IW32 and NN10 supernatants after 48 h in culture. The in vitro bioassay gave the highest levels (up to 1000 mU/ml), the in vivo bioassay the lowest, and the radioimmunoassay gave intermediate results. NN10 and IW32 cell lines have been induced by two different FMuLV and were shown to be independent by cytogenetic studies. The molecular weights of IW32 and NN10 epo were close to the molecular weight of mouse plasma epo but elution profiles suggested that some differences might exist between these epos. Cloned IW32 and NN10 cells were shown to retain both the ability for erythroid differentiation after incubation with chemical inducers and the ability to produce epo. This demonstrates that malignant erythroid cells were the source of epo production in these cell lines. PMID- 3861325 TI - On the role of the spleen in Friend virus (F-MuLV-P) erythroleukemia. AB - About 30% of Friend virus (F-MuLV-P)-infected C57BL/6 mice became leukemic more than ten weeks after virus infection. This late leukemia development could not be essentially influenced by drug treatment, such as injection of hydroxyurea (2 X 500 mg/kg), actinomycin D (3 X 120 micrograms/kg), phenylhydrazine (3 X 60 mg/kg), or 30 micrograms endotoxin or by bone marrow transplantation following lethal irradiation. Endotoxin (30 micrograms) given prior to virus caused the loss of resistance to F-MuLV-P, but it had only a slight effect if applied one or three months after virus infection. Leukemia development has never been observed in C57BL/6 mice after splenectomy. In DBA/2 mice, highly susceptible to F-MuLV-P, leukemia development was markedly impaired if the mice were splenectomized. These results clearly indicate that the spleen plays a crucial role in the mechanism of susceptibility or resistance to the Friend virus. PMID- 3861326 TI - Effect of alkyl-lysophospholipids on phosphatidylcholine biosynthesis in leukemic cell lines. AB - Alkyl-lysophospholipids are ether analogues of lysophospholipids that have tumoricidal activity mediated through activation of macrophages or by direct effect on tumor cells by disturbance of phospholipid metabolism. The effect of racemic 1-octadecyl-2-methyl-sn-glycero-3 phosphocholine on phosphatidylcholine synthesis was investigated in sensitive (HL-60) and resistant (K-562) human leukemic cell lines. Radiolabeled lysophosphatidyl-choline, choline, and methionine incorporation into phosphatidylcholine was measured in intact cells exposed for 24 h to varying concentrations of the compound. In HL-60 cells, marked inhibition of phosphatidylcholine synthesis was demonstrated using lysophosphatidylcholine or choline as precursors, but no effect was observed on methionine incorporation. No effects were observed in K-562 cells. These investigations suggest that alkyl-lysophospholipids inhibit phosphatidylcholine synthesis via the acyltransferase reaction and from choline, but not from methionine. PMID- 3861327 TI - Stimulation of proliferation and differentiation of acute myeloid leukemia cells on a bone marrow stroma in culture. AB - Purified acute myeloid leukemia (AML) blasts were placed in Dexter cultures with and without a preestablished normal bone marrow stroma to investigate whether their proliferation was dependent on a stroma, as is the case with normal marrow cells. It was also studied whether AML cells were induced to differentiate under a stromal influence. Ten patients with untreated AML were included in the study. In most cases, AML cells were maintained at higher levels when a normal stroma was present. Cell recoveries varied widely between patients. Net cell production was apparent in nine of ten stroma cultures. In most paired cultures without a preestablished stroma, cell numbers decreased. Leukemic colony-forming cells (L CFU) (clonogenic cells) were also recovered in higher numbers from stroma cultures, but decreased rapidly. The peak of L-CFU preceded that of AML nucleated cells. Cytogenetic analysis (three cases) confirmed the AML karyotype of cultured cells. AML blasts were tested weekly with a number of monoclonal antibodies. During culture, the percentage of cells expressing mature monocytic and granulocytic surface antigens increased markedly, suggesting progressive maturation. Morphologic maturation at the same time was incomplete. Thus, AML cells proliferate and differentiate in vitro under the influence of a normal bone marrow stroma, a property which these cells share with normal bone marrow cells. PMID- 3861328 TI - Post-traumatic temporomandibular joint treatment. PMID- 3861329 TI - Mandibular asymmetry measuring technique. PMID- 3861330 TI - Extensive perioral neuromuscular change with function regulator II therapy. PMID- 3861331 TI - Association of anthracycline derivatives with DNA: a fluorescence study. AB - The DNA affinity for 26 anthracycline derivatives was studied by the quenching fluorescence technique. The stereochemical requirements for DNA intercalation are discussed. The relationship between the DNA affinity and bioactivity is also pointed out. PMID- 3861332 TI - [Experience with masseter hypertrophy of occlusal origin]. PMID- 3861333 TI - [Data on the tumor-inducing effect of N-methyl-N-nitrosourea]. PMID- 3861334 TI - [Neglected diseases in pedodontics]. PMID- 3861335 TI - [Double invagination in geminated teeth]. PMID- 3861336 TI - [Bioceramics as a material for oral endosseous implants]. PMID- 3861337 TI - [The psychosomatic view of myoarthropathy]. PMID- 3861338 TI - [Extensive follicular cyst of the mandible (case report)]. PMID- 3861339 TI - [Comparative data on dental caries in school children of Baja and Nagybaracska (1948-1983)]. PMID- 3861340 TI - A common sense approach for treatment of myofascial pain-dysfunction syndrome. PMID- 3861342 TI - L.D. Pankey--the Institute. PMID- 3861341 TI - The dentist and the elderly patient. PMID- 3861343 TI - Orthodontic treatment of cleft lip and palate. PMID- 3861344 TI - Child abuse. PMID- 3861345 TI - Labor relations in the dental office: an employer's guide to hiring, firing, and wage payment. PMID- 3861346 TI - X-rays: answers to the most frequently asked questions. PMID- 3861347 TI - Dental assisting can be a zoo. PMID- 3861348 TI - The changing role of women in film, 1920-1985. PMID- 3861350 TI - [Basic ceramic coating technic for cold light curable composite veneers]. PMID- 3861349 TI - Dental Board radiologic policies and the dental assistant candidate. PMID- 3861351 TI - The best incentive plan for your staff. PMID- 3861352 TI - Medical insurance can pay your patients' dental bills. PMID- 3861354 TI - Ten ways to malpractice-proof your practice. PMID- 3861353 TI - Liability coverage: $1,000,000 made me a target. PMID- 3861355 TI - How to work better with your dental lab. PMID- 3861356 TI - Doctors versus staff: how both sides can win. PMID- 3861358 TI - Perio problems: effective treatment and referrals. PMID- 3861357 TI - How to expand your practice and profits. PMID- 3861359 TI - Seven steps to better patient communication. PMID- 3861360 TI - Marketing your practice: the personal touch. PMID- 3861361 TI - Practicing with another dentist: avoid these legal traps. PMID- 3861362 TI - Dental insurance: streamline your system, boost your cash flow. PMID- 3861364 TI - Radio: an effective way to market. PMID- 3861363 TI - Boost your expectations for a more productive practice. PMID- 3861365 TI - An updated office manual means a smooth-running office. PMID- 3861366 TI - Drugs in dentistry. Dietary supplement fluorides. PMID- 3861367 TI - Dental technology education in Japan. 2,260 hours of 'basic' instruction. PMID- 3861368 TI - Cash flow: why it does and doesn't. PMID- 3861369 TI - Getting certified in Germany. There are no shortcuts. PMID- 3861370 TI - Want to expand? Hit the pavement. PMID- 3861371 TI - Seven keys to profitability. PMID- 3861373 TI - Establishing credit and creditability with your banker. PMID- 3861372 TI - Today's education needs more than bandages. PMID- 3861374 TI - The Keyes method of alternative periodontal therapy. A critical review. PMID- 3861375 TI - Acquired immune deficiency syndrome. Implications for dental hygiene practice. PMID- 3861376 TI - Effectiveness of margination procedures in relation to periodontal status. PMID- 3861377 TI - Root topography following instrumentation. A SEM study. PMID- 3861378 TI - Oral cancer self-examination. The dental hygienist's role. PMID- 3861379 TI - The bulimic dental patient. Recognition and recommendations. PMID- 3861380 TI - Military dentistry: a different career. PMID- 3861381 TI - Spread the good news of dentistry's economy. PMID- 3861383 TI - A tactful way to treat the dental emergency. PMID- 3861382 TI - Basic computer terms for the dental office. PMID- 3861384 TI - Use your staff and patients to develop policy. PMID- 3861385 TI - Your recipe for a successful practice. PMID- 3861387 TI - Symposium on quality assurance. PMID- 3861386 TI - Hang out a shingle: tips on office design. PMID- 3861388 TI - Quality Assurance. Historical perspective and critical issues. AB - Quality assurance in dentistry traces its roots to the experience of medicine. Emerging challenges to the traditional practice of dentistry have created a more receptive environment for the introduction of quality assurance systems. This article underscores some of the historical perspectives as well as the critical issues facing dentistry with regard to quality assurance. PMID- 3861389 TI - Professional self-regulation: peer review. AB - Dentistry, in fulfilling its responsibility for self-regulation, has established a highly specific and formalized method of peer review. Its primary purpose is to mediate problems between patients, dentists, and third parties relative to the quality of treatment and appropriateness of care. It is a confidential service provided to the public and profession at no cost and accomplished with the voluntary cooperation of all parties involved. Decisions of peer review committees are advisory in nature but offer an alternative to legal resolution of misunderstandings and problems in patient care. The profession, by continually refining peer review and by educating its members and the public to its function, is providing a unique and valuable service to patients, dentists, and third parties. The objective and consistent application of this self-monitoring process is but one mechanism by which dentistry seeks to serve the public and perpetuate its high standard of care. PMID- 3861390 TI - Social, economic, and political forces in quality assurance. AB - Licensure and accreditation, established primarily to protect the existing profession, have been incorrectly assumed to be effective agents for quality assurance. Although dentistry, being less institutionalized than medicine, has had less pressure for quality assurance, both increasing third party payment for care and sophistication of population have led to the development of assessment and assurance mechanisms. At present, these are used more for cost containment than quality assurance, but considerations for the protection of the oral health of the public are growing. PMID- 3861391 TI - Quality assurance and development of criteria and standards. AB - This article considers some fundamental considerations in developing criteria and standards for use in a formal quality assurance program. These include the purpose of the review system, the types of problems being addressed, the availability of data, and the time and money that can be devoted to improving clinical performance. PMID- 3861392 TI - Development of criteria and standards for dental care. AB - Quality assurance requires realistic standards of compliance with professionally acceptable criteria. As dental practice changes, these measures of performance must also change to distinguish between adequate and inadequate dental care. PMID- 3861393 TI - Dental quality assurance. A federal overview. AB - The Federal Government has engaged in research and investigation of dental quality assurance and related questions of dental delivery and financing for nearly 3 decades. Despite this federal effort and other privately financed projects, there is no completely accepted consensus regarding the definition or scope of the term "quality assurance" as applied to dentistry. Although federally sponsored research has declined lately, the profession has many interested parties to satisfy: consumers, the Federal Government, third- and fourth-party purchasers, unions, and others. Continued attention to dental quality assurance by the profession and other parties is desirable to ensure continuation of high standards of professionalism and practice. PMID- 3861394 TI - Quality assurance and the dental record. AB - The patient record can be valuable in reviewing quality of dental care if the record is properly designed and if the documentation is complete. A number of types of record audits are possible, based on intended scope of audit, record selection criteria, and frequency of audit. PMID- 3861395 TI - Quality assurance and prepaid programs. AB - This article presents the concepts of quality assurance and the various mechanisms that are employed in quality assurance systems. The implications for quality assurance are discussed in relation to the major types of prepaid programs. Capitation dental plans have certain opportunities to engage in quality assurance, whereas indemnity plans face a more complex set of constraints. Each type of plan faces different problems and requirements, and each needs to design quality assurance systems that address their concerns. PMID- 3861396 TI - Perspective of the third parties. AB - The dental profession and third parties define "dental quality" quite differently. Until the dental profession defines quality to include psychological, sociologic, and economic factors and establishes measurable standards of performance, dental quality assurance cannot exist in any meaningful way. PMID- 3861397 TI - The dental profession's commitment to quality assurance. AB - Although the phrase quality assurance has only recently been used in the health care field, it is clear that the concept is far from new. As has been described, early efforts by the American Dental Association in licensure and accreditation of professional educational programs were directed toward providing the consumer of health care services confidence in the quality of care being rendered. Such programs serve as a strong foundation upon which current work can build ongoing and future efforts. This current effort is a logical step along the path that was defined many years ago by the dental profession. Although current projects in dental quality assurance are exciting and new, the commitment to assuring the American public of the highest possible quality of dental care is not new. The goal of the American Dental Association remains unchanged: patients entering the dental health care system must be able to do so with confidence that they will receive quality care. PMID- 3861398 TI - Quality assurance and the role of self-evaluation and continuing education. AB - Optimal practice competency requires planned change. Self-evaluation, goal setting, planning and implementing change, and continual evaluation are required to keep a practice at its best. In this article, the authors recommend steps toward regular self-assessment and new sources of information and advice. PMID- 3861399 TI - A comprehensive quality assurance system for practicing dentists. AB - A comprehensive outcome-oriented quality assurance methodology manual has been developed for use by practicing dentists. The audit consists of four parts. Provision for immediate feedback to providers in order to monitor behavior change is a critical part of the review process as is the emphasis on the appropriateness of care dimension, a relatively unexplored area of quality assurance activity. PMID- 3861400 TI - Risk management in the dental office. AB - Owing to a massive increase in malpractice suits directed against dentists and an escalation in the amount of settlements and court ordered awards, professional liability premiums are increasing at an alarming rate. Perhaps more important to the dentist is the anguish caused by the legal process that exposes him or her to allegations made in the public arena of the courts and the press regarding the delivery of substandard care. In addition, the dentist may suffer considerable loss of money as a result of findings of negligence by the courts. The license to practice also is at risk. In today's environment, the practice of a health profession does not appear to be emotionally, professionally, or financially secure. Despite these disadvantages in the practice of dentistry, there is much the practitioner can do to reduce or eliminate legal vulnerability. In addition to maintaining a level of care that meets the standards of other dentists in the community through the process of quality assurance, legally sound office practices and practice management procedures may contribute significantly to minimizing legal risks. A process known as risk management is currently available to assist the practicing dentist in achieving these goals. The principles of risk management was borrowed from industry by the health care industry following the crisis in medical malpractice of the early 1970s. Its primary focus is the protection of resources from losses due to legal action. The activities associated with risk management are easily adapted to dental practice. The focus of these activities is directed at identifying areas of legal vulnerability, taking steps directed at reducing or eliminating them, and purchasing insurance to offset potential financial losses. The current areas of legal vulnerability center around issues of (1) absence of consent to care, (2) negligence, and (3) breach of contract. Consent to care, to be valid, must be informed and granted voluntarily. To meet the test of "informed," the information given to the patient must be in understandable language and contain the risks, benefits, and alternatives to the recommended treatment. In addition, the patient must be given an opportunity to have his or her questions answered. Obtaining consent from one having legal capacity to grant consent is another essential requirement. The treatment of minors and those that are emancipated, raises many problems with consent.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3861401 TI - Quality assurance and the dentist-patient relationship. AB - This article has suggested that the role of the doctor-patient relationship in a quality assurance program is a major and multifaceted one. The essence of the interaction between doctor and patient has personal, psychological, and technical aspects. They proceed beyond the office walls into the community and support systems. The measurable outcome of any diagnosis and treatment is a result of the doctor-patient relationship as well as the assessment of the modalities of care and the environment surrounding the rendering of that care. We have reached a time in the health care activities of this nation, at which there are many functions, facilities, and organizations participating in all aspects of health care. I believe that the doctor-patient relationship is still the core of the system and has a direct effect on the quality of care. The future will probably see greater emphasis on standards of care, and there will be greater involvement of quality assessment. In the long run, this will be in the best interest of the doctor and the patient. PMID- 3861402 TI - Quality assurance. A reviewer's perspective. AB - Participating in a quality assurance program can be a valuable learning experience for all participants, contributing to an improvement in oral health delivery. This article relates the experience and opinion of two general dentists who served as quality assurance auditors. PMID- 3861403 TI - The role of the consumer in quality assurance. AB - At present, then, consumer-related concerns can be viewed as being in two categories. The first consists of those persons already within the dental care delivery system who, overall, are satisfied with the care they are receiving and tend to hold their dentists, and the profession as a whole, in high esteem. This group does express concern about the technical quality of the services provided to them but also recognizes that their ability to adequately judge this aspect of care without professional assistance is limited. Greater consumer input, however, is being sought in participation in treatment-planning decisions and in choices available to them. Similarly, patients are looking to their dental providers to show greater concern for their needs as individuals: their financial, emotional, language, family, and related health needs. In general, dentists are responding to these demands both out of genuine concern that their patients receive the best care under the most caring circumstances and out of economic necessity. In both traditional practices and in emerging group-practice arrangements, consumer input is being sought, both informally and in more structured arrangements such as the inclusion of consumer representatives in prepaid dental programs. Although there will, understandably, always be tensions in the relationship between consumer expectations and the actual state-of-the-art that determines to which level the provider can actually provide, the dental profession can pride itself in being most demanding on itself to meet the needs of the people we serve. In the latter category, that of persons at present not receiving dental care, we currently find an adversary relationship between professional and consumer groups. Differences exist not only in perceived solutions, but to the actual extent of the problems. Consumer demands that informed choice should include their ability to utilize nondental health providers for dental care, further serve to antagonize and alienate even those leaders of the profession who also seek to expand services to previously unserved or underserved population groups. Is the relationship between the profession and the underserved community and their spokespersons destined to be one of antagonism? If we accept the data that of those persons who do not seek dental care, 65 per cent simply "do not feel a need to do so," there would appear to be a mutuality of interest between the profession and consumer groups to mount a suitable outreach or educational program to reach this particular population group.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3861404 TI - Quality assurance and marketing. AB - Although considerable efforts have been directed toward the development and utilization of marketing strategies for dental practices, little if any information exists in the specific area of the role quality assurance may play in marketing dental services. This article describes and analyzes the current relationship between quality assurance and marketing, given the complex array of factors on the horizon that may affect how dentistry is organized and delivered. It must become the role of the profession to see that the alliance between marketing and quality assurance continues and is utilized to assure the quality of care provided and accountability to the public. PMID- 3861405 TI - [Times have changed, therefore, we have adjusted]. PMID- 3861407 TI - Colleagues helping colleagues. PMID- 3861406 TI - Diet, dental caries and health education. PMID- 3861408 TI - Office larceny. PMID- 3861410 TI - Relax fearful patients with an ancient medicinal art. PMID- 3861409 TI - Former ADA president examines potential impact of marketing vote. Interview by Penny Elliot Anderson. PMID- 3861411 TI - Effective office communications. PMID- 3861412 TI - "I don't want a 100% collection ratio". PMID- 3861413 TI - Running a dental laboratory. Part eight: The art of management. PMID- 3861414 TI - Running a dental laboratory. Part nine: Keeping the accounts. PMID- 3861415 TI - Absorbed doses in the craniofacial region during various radiographic and radiotherapeutic procedures. PMID- 3861416 TI - Power spectrum method used for comparing film and xeroradiography. PMID- 3861417 TI - A rare-earth screen multisection cassette for temporomandibular joint tomography: a technical report. PMID- 3861418 TI - Various appearances of postoperative maxillary cysts with computerized tomography. PMID- 3861419 TI - Bilateral coronoid hyperplasia. PMID- 3861420 TI - A stereoangiographic study of the arterial variations in the external carotid system. PMID- 3861421 TI - An improved microdensitometric method to investigate interdental bone pathology. PMID- 3861422 TI - Enlargement radiography with special reference to lateral oblique radiography of the mandible. PMID- 3861423 TI - The effects of processing variables on the contrast of type D and type E dental film. PMID- 3861424 TI - Orthodontics in general practice. The case for early assessment: 1. Treatment in general practice. PMID- 3861425 TI - Bone reconstruction: the use of hydroxyapatites. PMID- 3861426 TI - Lichen planus. PMID- 3861427 TI - Vocational training for dental practice. 1. The pilot scheme. PMID- 3861428 TI - The tongue: 1. Normal appearance and clinical examination. PMID- 3861429 TI - Orthodontics in general practice. The case for early assessment: 2. Treatment with specialist support. PMID- 3861430 TI - Lingual infarction in cranial arteritis. PMID- 3861432 TI - Dental syndromes in medical genetics. PMID- 3861431 TI - The tongue. 2. Developmental anomalies and coated tongue. PMID- 3861433 TI - Loss of substance of dental composite restorations. PMID- 3861434 TI - Oxide adherence to a Ni-Cr-Mo ternary alloy. PMID- 3861435 TI - Frictional effects between natural teeth in an artificial mouth. PMID- 3861436 TI - Infrared spectral analysis of EBA-hexyl vanillate-ZnO cement. PMID- 3861437 TI - Infrared spectral kinetic analysis of EBA-HV-ZnO cements. PMID- 3861439 TI - Effect of zinc in two non-gamma-2 dental amalgam systems. PMID- 3861438 TI - In vitro enamel fluoride uptake from topical fluoride agents. PMID- 3861440 TI - Vesiculo-bullous lesions. PMID- 3861441 TI - Vital root submersion: an adjunct for conventional complete denture therapy for the sick and the elderly patient. PMID- 3861442 TI - Intra-oral effects of drugs in elderly persons. PMID- 3861443 TI - Diet and aging: current concerns related to oral health. PMID- 3861444 TI - Dental need among hospice patients in Colorado: a pilot study. PMID- 3861445 TI - Tooth shade preferences in older patients. PMID- 3861446 TI - Comparing treatment decisions for elderly and young dental patients. PMID- 3861447 TI - Private dental practice response to barriers to access: the elderly. PMID- 3861448 TI - Liposarcoma arising from the cheek of the aged: report of a case and review of the literature. PMID- 3861449 TI - Bases, liners, and varnishes: interviews with contemporary authorities. PMID- 3861450 TI - Occlusal therapy to correct apertognathia after mandibular osteotomy. PMID- 3861452 TI - An analysis of pantomographs from U.S. Air Force recruits. PMID- 3861451 TI - Patient perceptions of failure to achieve optimal local anesthesia. PMID- 3861453 TI - Dentists' perceptions of the elderly. PMID- 3861454 TI - Amalgam restoration of a palatogingival groove. PMID- 3861455 TI - Ulcerated mass on lip. PMID- 3861456 TI - Prophylactic antibiotic coverage in dentistry: a survey of need for prosthetic joints. PMID- 3861457 TI - Care delivery in a university geriatric dental program. PMID- 3861458 TI - Bifurcated palatal sinus tract. PMID- 3861459 TI - Surgical retraction for subgingival Class V restorations. PMID- 3861460 TI - Talking and blood pressure during dental treatment. PMID- 3861461 TI - The stabilized double-pin splint. PMID- 3861462 TI - Orthodontic extrusion of a canine root with a closed-coil orthodontic spring. PMID- 3861463 TI - Composite-resin restoration of a posterior tooth. PMID- 3861464 TI - Pigmented mass in cheek. PMID- 3861465 TI - Loss of facial pigmentation. PMID- 3861467 TI - The five keys to facial beauty and TMJ health. PMID- 3861466 TI - Effects of bile salts and prostaglandins on sodium transport in isolated rat gastric mucosa. AB - To determine whether prostaglandins may protect against bile salt inhibition of ion transport in the stomach, gastric mucosal tissue was isolated from the rat and mounted in flux chambers. Transport of Na+ was traced with radioisotopes in the absence of bile salts and then in the presence of conjugated taurocholate or unconjugated deoxycholate at low, intermediate and high mucosal concentrations (1, 5 and 15 mmol/1). At a high (7.40) or low (3.4) mucosal pH, only the unconjugated deoxycholate inhibited active Na+ transport from mucosa to submucosa with respect to untreated controls. Inhibition of Na+ transport was apparent at a low level of deoxycholate, which also inhibited the electrical potential difference. Intermediate and high levels of deoxycholate lowered the tissue resistance. When the tissues were exposed to mucosal prostaglandin E2 or its 16,16-dimethyl analogue before and during acidified taurocholate administration, Na+ transport was not changed significantly but the electrical resistance remained high. Thus, unconjugated bile salt is more potent than conjugated bile salt in inhibiting Na+ transport and breaking the gastric mucosal barrier, and prostaglandins may afford some small protection. PMID- 3861468 TI - The use of a remoldable appliance for diagnosis and treatment of craniomandibular disorders: two case reports. PMID- 3861469 TI - Grumzat intermediary appliance. PMID- 3861470 TI - Functional treatment of the Class III malocclusion. PMID- 3861471 TI - The face and functional jaw orthopedics. Part 1: Patient cooperation. PMID- 3861472 TI - An experimental study on the effects of the MORA on football players. PMID- 3861474 TI - Oncogenetic aspects of chronic myelocytic leukemia. PMID- 3861473 TI - Ulcerative colitis and HLA phenotype. AB - The distribution of HLA A, B, C, DR antigens was investigated in a British population with ulcerative colitis. Fifty six patients were typed for HLA, A, B, C and 46 additionally for DR. No association was found between the HLA phenotype and the presence or absence of ulcerative colitis. Serum from 52 patients was tested for the presence of the anticolon antibody. There was no relation between the presence of the antibody and the HLA phenotype. Finally, no correlation was found between the HLA phenotypes, the age of onset of the disease, the extent and the clinical course. PMID- 3861475 TI - Association between the Philadelphia chromosome and a unique abl transcript. PMID- 3861476 TI - Somatic N-ras oncogene activation in a patient with acute myeloblastic leukemia. PMID- 3861477 TI - Behavior of human leukemic progenitor populations in long-term marrow culture. PMID- 3861478 TI - Ultrastructural analysis of normal and leukaemic cells by the immunogold method and monoclonal antibodies. PMID- 3861479 TI - Analysis of leukemic cells with monoclonal antibodies in acute myelomonocytic leukemia suggests abnormality at an early differentiation stage in certain cases. PMID- 3861480 TI - Nonspecific cross-reacting antigen as a marker of myelocytic leukemias in individual stages of myelocytic cell differentiation. PMID- 3861481 TI - Plasminogen activator as a prognostic factor in hematological malignancies. PMID- 3861482 TI - Immune status of leukemia patients. PMID- 3861483 TI - Chromosome alterations in oncogenesis. PMID- 3861484 TI - Vitamin D: myeloid differentiation and proliferation. PMID- 3861485 TI - Changes in isoenzyme patterns expressed by the erythroleukemia cell lines K-562 and HEL after induction of differentiation. PMID- 3861486 TI - Production and characterization of monoclonal antibodies against the human leukemic cell line K562. PMID- 3861487 TI - Risk groups in a multicenter pilot study for treatment of acute lymphoblastic and acute undifferentiated leukemia in adults. PMID- 3861488 TI - Killer cells in leukemia. PMID- 3861490 TI - Treatment of acute myeloid leukemia and myelodysplastic syndrome by low dose cytosine arabinoside. PMID- 3861489 TI - The feasibility of opal/high dose Ara-C treatment of adult acute lymphoblastic leukaemia. PMID- 3861492 TI - Adult acute lymphoblastic leukaemia at University Hospital, Malaysia. PMID- 3861491 TI - The results of high risk acute lymphoblastic leukemia and non-Hodgkin's lymphoma total therapy. PMID- 3861493 TI - Treatment of acute lymphoblastic leukemia in childhood: a report for the ALL 77 02 group. PMID- 3861494 TI - Recent results from Total Therapy Study X for standard and high risk acute lymphoblastic leukemia in children: recognition of new clinical and biologic risk features. PMID- 3861496 TI - [The forensic responsibility of the physician]. PMID- 3861495 TI - [Information, errors and dangers in oro-maxillo-facial surgery. Detection and treatment]. PMID- 3861497 TI - [Prevention of unwanted results in osteosynthesis of the maxilla within the scope of orthodontic surgery]. PMID- 3861498 TI - [Insufficient results following Le Fort III osteotomy and their prevention by double stage mid-face mobilization]. PMID- 3861499 TI - [Decreasing the danger of recurrence following operative correction of open bite]. PMID- 3861500 TI - [Can permanent hearing damage following mid-face osteotomies be prevented?]. PMID- 3861501 TI - [Complications in the operative treatment of mandibular fractures]. PMID- 3861502 TI - [Staged informing of the patient in oro-maxillo-facial surgery]. PMID- 3861503 TI - [Prevention of postoperative damage by intra- or extraoral approach to mandibular fractures]. PMID- 3861504 TI - [Articular occlusion problems in plate osteosynthesis]. PMID- 3861505 TI - [Failures in the operative care of mandibular fractures with Kirschner wires and their treatment]. PMID- 3861506 TI - [Prevention of dish face in the care of mid-face fractures. Treatment principles and their indications from the current viewpoint]. PMID- 3861507 TI - [Prevention and treatment of typical errors in the therapy of lateral mid-face fractures]. PMID- 3861508 TI - [Complications and sequelae in crush fractures of the mid-face and frontal bone]. PMID- 3861509 TI - [Visual cortex infarct as a cause of homonymous hemianopsia following malar bone reposition]. PMID- 3861510 TI - [Post-traumatic iatrogenic eyeball rotation. Development and reposition]. PMID- 3861512 TI - [For and against the Abbe-plasty]. PMID- 3861511 TI - [Treatment of unwanted results in cheiloplasty in cleft formations]. PMID- 3861513 TI - [Prevention of errors in the operative correction of nose deformities in cleft patients]. PMID- 3861514 TI - [Prevention of valopharyngeal insufficiency following palatoplasty by velopharynx adhesion]. PMID- 3861515 TI - [Unwanted results in craniofacial surgery]. PMID- 3861517 TI - [Complications and sequelae of early childhood treatment of hemangiomas in the maxillofacial area]. PMID- 3861516 TI - [Preoperative information to the patient before maxillary surgery interventions based on a standardized procedure]. PMID- 3861518 TI - [Significance of arthrography and integrated electromyography for the determination of indications in temporomandibular joint surgery]. PMID- 3861519 TI - [Problems in free tissue transplantation with microsurgical revascularization]. PMID- 3861520 TI - [Complications of microvascular small intestine transplantation as a principle for improving operative technic]. PMID- 3861521 TI - [Prevention of complications in myocutaneous pectoralis flaps]. PMID- 3861522 TI - [Is operative seeding of tumor cells possible or preventable?]. PMID- 3861523 TI - [Errors in intra-arterial chemotherapy]. PMID- 3861524 TI - [Peritumor interstitial double nuclide-double compound lymphoscintigraphy in the noninvasive detection of lymphatic metastases in tumors in the area of the face, skull and mouth cavities]. PMID- 3861525 TI - [Legal decisions in iatrogenic damage in oro-maxillo-facial surgery]. PMID- 3861526 TI - [Treatment of iatrogenic thoracic duct lesions]. PMID- 3861527 TI - [Clinico-experimental studies on the prevention of a long-term pain syndrome following maxillary sinus operations]. PMID- 3861528 TI - [Treatment and prevention of neuralgiform pains following facial fenestration of the maxillary sinus]. PMID- 3861530 TI - [Legal decisions in surgery-induced nerve lesions of the maxillofacial area]. PMID- 3861529 TI - [Treatment of chronic pain conditions as operative sequelae]. PMID- 3861531 TI - [Operative treatment of patients at risk]. PMID- 3861532 TI - [Aspiration in operative interventions]. PMID- 3861533 TI - [The phantom tooth--a complication?]. PMID- 3861534 TI - [Prevention and treatment of unwanted results in tooth root fractures]. PMID- 3861535 TI - [Treatment of postsurgical bone infections]. PMID- 3861536 TI - [The responsibility of the physician to inform the patient, from the jurisprudence viewpoint]. PMID- 3861537 TI - [Unwanted late results following augmentative alveolar ridge-plasty of the mandible using autologous rib transplants]. PMID- 3861538 TI - [Causes, prevention and therapy of postoperative function disorders of the chin musculature]. PMID- 3861539 TI - [Clinically relevant oral anatomy of the lingual nerve]. PMID- 3861540 TI - [Causes of injury to the lingual nerve in the operative extraction of the lower wisdom teeth--chances for reconstruction]. PMID- 3861541 TI - [Results following surgical therapy of injuries of the inferior alveolar, lingual and facial nerves]. PMID- 3861542 TI - [Physician liability and associated problems]. PMID- 3861543 TI - [Effect of operative technic on the development of postoperative facial paralysis and the auriculotemporal syndrome in parotid surgery]. PMID- 3861544 TI - [Sparing of the accessory nerve in radical neck dissection]. PMID- 3861545 TI - [Operative interventions of the lateral area of the neck in relation to paralysis of the accessory nerve]. PMID- 3861546 TI - [Sensation disorders of the lateral cutaneous femoral neck following ilial chip removal]. PMID- 3861547 TI - [Unwanted effects of corrective rhinoplasties]. PMID- 3861548 TI - [Prevention of alien changes of facial expression in rhinoplasty]. PMID- 3861549 TI - [A method for the prevention of supratip swelling following esthetic rhinoplasty]. PMID- 3861550 TI - [Morphologic studies on the problem of scar formation in the oro-maxillo-facial region]. PMID- 3861551 TI - [Prevention and treatment of unwanted results and complications in standard orthodontic operations]. PMID- 3861552 TI - [Complication rate as a selection criterion in orthodontic operations]. PMID- 3861553 TI - [Infection and pseudarthrosis as complications following selective ramus osteotomies]. PMID- 3861554 TI - [Informing the patient in operative medicine]. PMID- 3861555 TI - [Does oblique osteotomy in the mandibular branch have advantages in relation to damage of the mandibular nerve in comparison to other osteotomies?]. PMID- 3861556 TI - [Conventional radiologic and computer tomography control of the condyle position following sagittal mandibular osteotomy]. PMID- 3861557 TI - [Complications in prognathism operations (following the method of labial pedicled anterior maxilla fragment) and their prevention]. PMID- 3861558 TI - [Cause and prevention of recurrences following Le Fort I osteotomies in cleft patients]. PMID- 3861560 TI - [Work of the dentist in 1965 and today (II)]. PMID- 3861559 TI - [Work of the dentist in 1965 and today (I)]. PMID- 3861561 TI - [A boom of new journals--and no end?]. PMID- 3861562 TI - [Sensible hygiene measures in dental practice for infection prevention]. PMID- 3861563 TI - JCAH outlines records requirements for ambulatory surgery. PMID- 3861564 TI - Recurrent mutation pressure does not explain the prevalence of the marker (X) syndrome. AB - In order to test the hypothesis that the high prevalence of the mar(X) syndrome is caused by a high mutation rate in male germ cells only, the fraction of new mutants among mothers of probands in 112 informative families has been examined by segregation analysis among their brothers and sisters. The estimated fraction of new mutants among these mothers is much lower than expected if a stable equilibrium existed between an unusually high mutation rate and a selective disadvantage of mentally retarded, male and female mar(X) carriers. Hence, the above-mentioned hypothesis could not be confirmed. PMID- 3861565 TI - Origin of human triosephosphate isomerase isozymes: further evidence for the single structural locus hypothesis with Japanese variants. AB - Four electrophoretic variants of human erythrocyte triosephosphate isomerase (TPI) have been studied to investigate the origin of the multiple forms of human TPI, in particular the constitutive TPI-B isozyme and the cell division associated TPI-A isozyme. The variant phenotype expressed by the constitutive TPI B isozyme in both erythrocytes and peripheral lymphocytes was also expressed by the cell division-associated isozymes in mitogen-stimulated lymphocytes and hair root cells. These results strongly support the hypothesis of Decker and Mohrenweiser (1981) that TPI-B and TPI-A originated from the same structural gene. We also found that the isozyme e is different from TPI-A with respect to both its electrophoretic mobility and heat stability. This finding is in contrast to the recent conclusion of Yuan et al. (1981) that both the isozyme e and TPI-A are deamidation products of TPI-B. PMID- 3861566 TI - Probable assignment of soluble isocitrate dehydrogenase (IDH1) to 2q33.3. AB - Gene dosage effects for soluble isocitrate dehydrogenase (IDH1) were investigated in four unrelated cases with abnormalities involving the long arm of chromosome 2. Case 1 was trisomic for 2q33.3----qter, Case 2 monosomic for 2q33.3----q35, Case 3 trisomic for 2q11.2----q24.2, and Case 4 monosomic for 2q23----q24.2. These abnormalities were de novo except in Case 1, where trisomy 2q resulted from a maternal translocation. The red cell IDH1 levels were significantly reduced in Cases 1 (41.4% of normal value) and 2 (51.9%), while they were normal in Cases 3 and 4. The low IDH1 level also in the father of Case 1 (43.6%), together with the common electrophoretic phenotype of IDH1 in red cells as well as leukocytes, led us to suppose that Case 1 was really heterozygous for common and probable null alleles, and that the IDH1 gene locus could be excluded from 2q33.3----qter. On the other hand, normal IDH1 values in the parents of Case 2 were consistent with the hemizygosity for this locus in Case 2. The results suggested that the IDH1 locus could be assigned to the 2q33.3 band, especially the proximal portion of it. PMID- 3861567 TI - Maturational changes in alveolar bone of adult rats. PMID- 3861568 TI - Dental care for the elderly. PMID- 3861570 TI - The medical consultation. PMID- 3861569 TI - DR antigens and Bf allotypes in north-east England. AB - In the population of north-east England gene frequencies of DR antigens and Bf alleles were investigated. The available data from Britain were examined for genetic heterogeneity. PMID- 3861571 TI - Dentistry--its dynamics and dentistry. PMID- 3861572 TI - The disease concept of alcoholism. PMID- 3861573 TI - High blood pressure--knowing some of its causes may save your life! PMID- 3861574 TI - Preliminary investigations of the cutting ability and the dimensional properties of the tips of root canal instruments. PMID- 3861575 TI - Typing for HLA class II at the product level. AB - Class II antigens were isolated from consanguineous homozygous typing cells by sequential immunoprecipitation with the MoAbs: 7.3.19.1 (anti-DRw52-like), B.8.11.2 (anti-DR backbone) and 7.5.10.1 (anti-HLA class II backbone). Depending on the DR serotype of the cell line used, two or three families of class II antigens could be isolated [1]. For each homozygous typing cell the different families of class II antigens were analysed on 1D-IEF gels. Charge heterogeneity showed that the different haplotypes are distinct in electrophoretic beta chain patterns. For each homozygous typing cell at least one beta chain was observed that possessed a haplotype unique pI. This means that typing for HLA class II at the product level is possible. PMID- 3861576 TI - Molecular evidence for five distinct MHC class II alpha genes in the rabbit. AB - Human HLA class II gene probes were used to identify five distinct genes encoding the class II heavy chain (alpha chain) in the rabbit. The rabbit genes were defined by both mapping data and hybridization studies of genomic clones derived from the inbred B/J rabbit strain. Analysis of the clones by hybridization at graded stringencies indicated that one group of clones corresponded to HLA-DR, one group to HLA-DQ, and two groups to HLA-DP. Clones within a fifth group, designated DN, hybridized weakly to HLA-DR and may carry a fourth species of class II alpha genes in the rabbit. Clones within the group showing high homology to HLA-DR alpha were found to also contain sequences hybridizing with a probe for HLA-DR beta. No HLA-DP, -DQ, or -DR beta sequences were detected in any of the other class II alpha clones. Distinct banding patterns observed in Southern blot analyses using either human or rabbit class II alpha probes revealed restriction fragment length polymorphism for the different rabbit haplotypes studied. The DN, DQ, and DR alpha genes appear to be present as single copies whereas there are two distinct DP-like genes in the rabbit. PMID- 3861578 TI - [Geographic tongue (exfoliation of areas of the tongue)]. PMID- 3861579 TI - [Should maximum allowable dosage concern us?]. PMID- 3861577 TI - Effects of prostaglandin synthesis inhibitors on the renin-angiotensin system and renal function. AB - Equal doses (8 mg/kg) of the nonsteroidal antiinflammatory drugs indomethacin, naproxen, and sulindac and a large dose of sulindac (32 mg/kg) were administered intragastrically to conscious rats after a normal sodium diet, furosemide stimulation, and a low sodium diet for 8 days. Indomethacin, naproxen, and the high dose sulindac (32 mg/kg) decreased urinary prostaglandin E2 excretion significantly under all experimental conditions. Sulindac (8 mg/kg) suppressed prostaglandin E2 excretion after the normal and low sodium diets but not after furosemide stimulation. Indomethacin decreased plasma active renin levels under all three experimental conditions. In rats receiving a normal sodium diet, indomethacin did not affect free water clearance or renal function; however, after furosemide stimulation or a low sodium diet, indomethacin caused a significant reduction of free water clearance and glomerular filtration rate. Naproxen and sulindac (8 mg/kg) did not suppress active renin under any of the experimental conditions. However, naproxen and sulindac caused a significant reduction in free water clearance and glomerular filtration rate after furosemide stimulation and a low sodium diet. Indomethacin, naproxen, and the high dose sulindac suppressed renal prostaglandin E2 excretion under all experimental conditions. Renal prostaglandin E2 does not appear to be necessary for active renin secretion. Indomethacin is the most potent inhibitor of active renin and, therefore, most likely to cause hyporeninemia. Volume depletion appeared to sensitize the kidney to the adverse effects of nonsteroidal antiinflammatory drugs. PMID- 3861580 TI - [Precancerous conditions of the oral mucosa. Biopsy and sampling methods]. PMID- 3861581 TI - [Evaluation of an ultrasonic tray for cleaning removable dental prosthetics]. PMID- 3861582 TI - [Dento-maxillofacial radiology in dentistry. Criteria for radiographic quality in dentistry and its relation to technics]. PMID- 3861583 TI - [Location of various infiltration sites in dental anesthesia. Demonstration of their accuracy]. PMID- 3861584 TI - [Inlays and onlays. Clinical trial with nonprecious alloys]. PMID- 3861585 TI - [An original technic for mandibular anesthesia. The Akinosi method]. PMID- 3861586 TI - [Experimental study of the behavior of a chromium-cobalt alloy during fracture fatigue]. PMID- 3861587 TI - Antibacterial activity of dental restorative materials. PMID- 3861588 TI - Leakage evaluation in vitro of the root canal sealer cement Sealapex. PMID- 3861589 TI - Biological evaluation of absorbent paper points. PMID- 3861590 TI - Antibacterial activity in paper points for endodontic therapy. PMID- 3861591 TI - The effects in vitro of zinc released from dental restorative materials. PMID- 3861592 TI - Measurements of the root surface temperature during thermo-mechanical root canal filling in vitro. PMID- 3861593 TI - A clinical study using automated instrumentation in root canal therapy. PMID- 3861594 TI - Obesity in women in an urban Trinidadian community. Prevalence and associated characteristics. AB - Triceps skinfold, body mass index (BMI), blood pressure, blood glucose concentration and serum lipoprotein concentrations were measured in 590 (80 percent) of 738 women aged 35-69 years resident within a defined area of Port-of Spain, Trinidad. A triceps skinfold of 32 mm or more (the 70th percentile of overall distribution) was found in 36 percent of women of African descent and 28 percent of women of other ethnic origin. Respective figures for a BMI of 30.0 kg/m2 or more were 32 percent and 27 percent at ages 40 to 64 years. Obesity was associated with an increase in blood pressure, increased fasting blood glucose, LDL cholesterol and VLDL triglyceride concentrations, and a reduction in HDL cholesterol concentration. Obese women had an increased tendency to a history of early menarche, multiparity and children of high birthweight. These findings suggested that, irrespective of ethnic origins, the effects of obesity on health in this female population resembled those in white N. American women. PMID- 3861595 TI - Opposite effects of a glucocorticoid and an immunostimulating agent on prostaglandin production by two different cell types. AB - Studies were performed to investigate the effects of several agents known to modulate wound healing on prostaglandin production by mouse embryo fibroblasts and adult thymic phagocytic cells in culture. Dexamethasone (10(-6)M) induced in both cell types a significant inhibition of the production of PGE2 and 6 keto PGF1 alpha, and a moderate inhibition of PGF2 alpha. Using an antiglucocorticoid compound, RU 38486, we were able to demonstrate that the inhibition of PG secretion represents a classical receptor-mediated effect of the steroid. In contrast, LPS and RU 41740 (5 micrograms/ml) induced a significant stimulation of PGE2 and 6-keto-PGF1 alpha secretion in the two types of cells. These results suggest that agents which modulate in different ways the process of tissue repair have opposite effects on PG production by cells involved in inflammatory and/or immunological reactions. PMID- 3861596 TI - Denture identification: a public service. PMID- 3861597 TI - The use of bolus normal saline instillations in artificial airways: is it useful or necessary? PMID- 3861598 TI - Early onset of daunomycin cardiotoxicity in a case of acute myelogeneous leukemia associated with Sweet's syndrome. PMID- 3861599 TI - Ultrastructural patterns of the alpha-naphthyl butyrate esterase activity in normal and leukaemic peripheral blood leucocytes. AB - The activity of alpha-naphthyl butyrate esterase was investigated at the ultrastructural level in normal human peripheral blood and in a few cases of hairy cell leukaemia, B-chronic lymphocytic leukaemia and acute monocytic leukaemia. A membrane reactivity was detected in most normal monocytes and lymphocytes. The activity in monocytes was very strong and was inhibited by NaF. It was NaF-resistant and less intense in lymphocytes. The reaction product was localized in the cytoplasm only in a small percentage of lymphocytes. In lymphocytes and monoblasts from pathological samples the pattern of reactivity was similar to that found in their normal counterparts, except for a lower intensity. The hairy cells showed a discrete distribution of the NaF-resistant reaction product on their cell surface. The different patterns of enzyme distribution are discussed critically. PMID- 3861600 TI - Osteosarcoma of the patella in a dog. AB - Osteosarcoma of the patella was diagnosed by biopsy in a 9-year-old, male dog of mixed breeding. The dog was originally examined because of intermittent lameness of the left hindlimb; there were minimal palpable abnormalities of the stifle. After the diagnosis, the owner refused further treatment for the dog. The dog was reexamined 13 months later because of a marked swelling of the stifle. The dog was euthanatized and necropsy findings confirmed the diagnosis. PMID- 3861601 TI - Myelodysplastic changes in a cat with myelomonocytic leukemia. AB - A cat had clinical and pathologic features similar to those of human subacute myelomonocytic leukemia. Studies involved cytologic, histologic, and cytochemical techniques. Findings included macrocytic nonregenerative anemia, monocytosis, thrombocytopenia, hyperproliferative bone marrow, and myelodysplasia typified by hypersegmented neutrophils and micromegakaryocytes. PMID- 3861602 TI - Hemothorax associated with telangiectatic osteosarcoma in a dog. AB - Hemothorax in a dog was attributed to bleeding from an intrathoracic mass attached to the sixth through the tenth ribs. The mass contained numerous cavernous, blood-filled spaces as well as bands of osteoid and occasional foci of osseous tissue. The diagnosis was telangiectatic osteosarcoma. Telangiectatic osteosarcoma is an uncommon variant of osteosarcoma. Cavernous, blood-filled spaces and paucity of bone are important histologic features. Metastasis was described in one of the seven telangiectatic osteosarcomas reported in dogs, and none was found in this case. PMID- 3861603 TI - New anthracycline glycosides obtained by the nitrous acid deamination of daunorubicin, doxorubicin and their configurational analogues. AB - The new anthracyclines 7-O-(2,3,5-trideoxy-3-C-formyl-alpha-L-threo pentofuranosyl)daunomyci none (8) and -adriamycinone (10) have been obtained upon nitrous acid deamination of daunorubicin and doxorubicin respectively. Deamination of the L-ribo analogue of daunorubicin (6) gave a mixture of 2,3,6 trideoxy-L-glycero-hexopyranosid-4-ulose (alpha-L-cinerulosyl) (11) and 2,6 dideoxy-alpha-L-arabino-hexopyranosyl (12) glycosides. The corresponding adriamycinone glycosides 13 and 14, obtained by deamination of the doxorubicin L ribo analogue 7, were found to display an outstanding antileukemic activity in mice. PMID- 3861604 TI - The comparative in-vitro activity of cefotetan against anaerobic bacteria. AB - The in-vitro activity of cefotetan, a new cephamycin, was assessed against a total of 336 strains of anaerobic bacteria by means of an agar dilution procedure and compared with that of cefoxitin, mezlocillin, piperacillin, clindamycin and metronidazole. Overall clindamycin and metronidazole were the most active of the test compounds. Cefotetan showed good activity against anaerobic cocci and clostridia, except for Clostridium difficile (MIC90 = 16 mg/l), although it was comparatively less active than the other beta-lactams against anaerobic cocci. In the case of the Gram-negative anaerobes, cefotetan showed moderate activity comparable to that of cefoxitin; against the 120 test strains of Bacteroides fragilis both cefotetan and cefoxitin were markedly more active than the penicillins. In studies with antibiotic combinations, cefotetan + cefsulodin showed marked synergy (FIC index less than 0.3) against the majority of strains of Bact. fragilis tested. PMID- 3861605 TI - Enoxacin treatment of urinary tract infections. AB - We treated 20 patients with urinary tract infections with enoxacin, a new nalidixic acid analogue, in an open uncontrolled trial. Twelve of 13 patients with covert bacteriuria or cystitis and four of seven patients with pyelonephritis were cured. Two treatment failures occurred in patients with complicated infections. Nine patients reported mild side-effects. PMID- 3861606 TI - In-vitro activity of Sch 34343 against anaerobic bacteria. AB - The in-vitro activity of Sch 34343, was compared with that of imipenem against 226 strains of anaerobic bacteria. Sch 34343 was identical in activity to imipenem, inhibiting 99.5% of the organisms tested at 16 mg/l (the breakpoint for both drugs). Imipenem was slightly more active than Sch 34343 against Bacteroides, Fusobacterium and Veillonella, although both drugs inhibited all organisms in these groups below breakpoint levels. PMID- 3861607 TI - Bradykinin-induced chemoreflexes from skeletal muscle: implications for the exercise reflex. AB - We examined the cardiovascular response to bradykinin stimulation of skeletal muscle afferents and the effect of prostaglandins on this response. Intra arterial injection of 1 microgram bradykinin into the gracilis muscle of cats reflexly increased mean arterial pressure by 16 +/- 2 mmHg, left ventricular end diastolic pressure by 1.6 +/- 0.6 mmHg, maximal dP/dt by 785 +/- 136 mmHg/s, heart rate by 11 +/- 2 beats/min, and mean aortic flow by 22 +/- 3 ml/min. The hemodynamic responses were abolished following denervation of the gracilis muscle. The increases in mean arterial pressure and maximal dP/dt were reduced by 68 and 45%, respectively, following inhibition of prostaglandin synthesis with indomethacin (2-8 mg/kg iv). Treatment with prostaglandin E2 (PGE2, 15-25 micrograms ia) restored the initial increase in mean arterial pressure, but not dP/dt, caused by bradykinin stimulation. Injection of PGE2 (15-30 micrograms ia) into the gracilis, without prior treatment with indomethacin, augmented the bradykinin-induced increases in mean arterial pressure and dP/dt. We conclude that small doses of bradykinin injected into skeletal muscle are capable of reflexly activating the cardiovascular system and that prostaglandins are necessary for the full manifestation of the corresponding hemodynamic response. The pattern of hemodynamic adjustment following bradykinin injection into skeletal muscle is very similar to that induced by static exercise. Therefore, it is possible that intense exercise provides a stimulus for this bradykinin-induced reflex in vivo. PMID- 3861608 TI - Biosynthesis of polymyxin E by a cell-free enzyme system. IV. Acylation of enzyme bound L-2,4-diaminobutyric acid. AB - An enzyme fraction, which catalyzes the ATP-PPi exchange reaction dependent on the three constituent amino acids of polymyxin E, was partially purified from crude extracts of Aerobacillus polyaerogenes. The approximate molecular weight was estimated to be 640,000 by Sepharose 4B gel filtration. Incubation of the enzyme with octanoyl coenzyme A and diaminobutyric acid in the presence of ATP and an ammonium sulfate fraction yielded octanoyldiaminobutyric acid thioesterified to the enzyme protein. On mild alkali treatment, octanoyldiaminobutyric acid, identified by paper chromatography, was released from the enzyme protein. From its acid hydrolyzate, diaminobutyric acid and octanoic acid were recovered in a molar ratio of 1 to 0.7. An ammonium sulfate fraction was required as the source of an acyltransferase for acylation of the enzyme-bound diaminobutyric acid. When [14C]-threonine was incubated with L-2,4 diaminobutyric acid in the presence of octanoyl coenzyme A, octanoyldiaminobutyrylthreonine bound to the enzyme protein was formed. These results suggest that acyldiaminobutyric acid bound to the enzyme protein is a possible initiation complex in the biosynthesis of polymyxin E. PMID- 3861609 TI - Detection of beta-globin mRNA precursor in heterogeneous nuclear ribonucleoprotein associated with U1-RNP by using anti-RNP antibody. AB - Heterogeneous nuclear RNA-ribonucleoprotein (hnRNP) fractions were isolated from Friend erythroleukemia cells and separated by 15-45% sucrose gradient centrifugation. The distribution of small nuclear RNAs (snRNAs) in hnRNP fractions indicated that the snRNAs are associated with hnRNP particles. HnRNP fractions were incubated with normal IgG or anti-U1 RNP IgG, and the resulting immunocomplexes were isolated by binding to a protein A-Sepharose column. HnRNP was found in bound fractions only when anti-U1 RNP IgG was used. By Northern hybridization of RNA extracted from the immunocomplexes with a beta-globin genomic DNA probe, 15S beta-globin mRNA precursors and 10S mature mRNA were detected. These findings suggest the existence of a complex of U1 RNP particles and hnRNP particles containing beta-globin pre-mRNA. PMID- 3861610 TI - Biosynthesis of the major human red cell sialoglycoprotein, glycophorin A. O Glycosylation. AB - The biosynthesis of the major human red cell sialoglycoprotein, glycophorin A, was studied in the erythroleukemia cell line K562 with emphasis on O glycosylation. The cells were pulse-chase labeled with [35S] methionine, and either directly immune precipitated with anti-glycophorin A antiserum or detergent-solubilized extracts first passed through columns containing the N acetylgalactosamine-specific lectin from Helix pomatia or the glucose/mannose specific lectin from lentil beans. From the sugar-eluted fractions anti glycophorin A antiserum was used to identify precursor molecules. After 5 min of labeling the first glycophorin A precursors were seen. The largest had an apparent molecular weight of 37,000, and bound to lentil lectin-Sepharose, but not to H. pomatia lectin-Sepharose. The lentil lectin-reactive glycophorin A molecules increased to Mr = 39,000 during chase and obtained sialic acids after 9 min of chase reflecting terminal N- and O-glycosylation. After 5-6 min of labeling two H. pomatia-interacting glycophorin A precursors with apparent molecular weights of 24,000 and 30,000 were obtained. These did not bind to lentil lectin-Sepharose. During chase also these molecules increased in size to Mr = 39,000. The immune precipitation of all antiglycophorin A-reactive precursor molecules was inhibited by purified red cell glycophorin A. The carboxylic ionophore, monensin, caused the accumulation of incompletely O-glycosylated glycophorin A molecules, which bound to H. pomatia lectin-Sepharose. These were degraded by treatment with endo-beta-N-acetylglucosaminidase H reflecting incomplete processing of the N-glycosidic oligosaccharide. PMID- 3861611 TI - The genetics of Graves' disease: HLA and disease susceptibility. AB - To relate genetic variation in Graves' disease (GD) susceptibility to polymorphism at MHC loci, clinical and family studies were undertaken in eastern Hungary. Among 1980 relatives of 534 index patients, 2.9% of siblings, 2.7% of offspring, and 3.0% of parents had GD. HLA haplotype combinations in affected sibling pairs were determined in the present data and combined with data in the literature (12 sibling pairs from Farid 1981, 12 from Chan et al. 1980, and 15 from Sasazuki et al. 1983); 43, 23, and 1 affected sibling pairs shared, respectively, 2, 1, and 0 HLA haplotypes. This distribution is inconsistent with simple dominant inheritance, but is consistent with simple recessive inheritance of HLA-related susceptibility over a range of gene frequencies (0.2-0.4). A frequency of 0.3 gives the best fit and is consistent with penetrance of 7.1% for the recessive susceptibility genotype; the data, however, can accommodate penetrance values up to 16%. The distribution of HLA haplotypes in 33 families related disease susceptibility more strongly to DR than to other loci. The distribution of HLA-B8 genotypes in 256 patients was in close agreement with Hardy-Weinberg equilibrium proportions, also favoring recessive inheritance of MHC-related susceptibility. The probability that an individual will be affected with GD can be predicted, based on sex, HLA genotype, and family history. For example, 14.9% of DR3-positive women with an affected first degree relative are likely to be affected. These predictions can be tested as family data accumulate. PMID- 3861612 TI - Proposed disk diffusion susceptibility criteria for ofloxacin. AB - Disk diffusion zone diameter breakpoint criteria for ofloxacin were tentatively established by correlating MICs with 1-, 3-, and 5-micrograms disk inhibitory zone diameters for 638 bacterial isolates representing 36 species. We recommend use of 5-micrograms disks with the following breakpoints: susceptible (MIC, less than or equal to 2.0 micrograms/ml), greater than or equal to 16 mm; intermediate (MIC, 4.0 micrograms/ml), 13 to 15 mm; and resistant (MIC, greater than or equal to 8.0 micrograms/ml), less than or equal to 12 mm. PMID- 3861613 TI - A bidimensional edgewise technique. PMID- 3861614 TI - Crozat principles and technique. PMID- 3861615 TI - Analytical orthodontic computer programs. PMID- 3861616 TI - Root realignment in furcation-involved teeth. PMID- 3861618 TI - Molar-to-molar mandibular retainer. PMID- 3861617 TI - Orthodontic economic index--1985. PMID- 3861619 TI - Bimler therapy. Part 1. Bimler cephalometric analysis. PMID- 3861620 TI - Topical fluoride therapy. PMID- 3861621 TI - Excess purine degradation in exercising muscles of patients with glycogen storage disease types V and VII. AB - To investigate purine catabolism in exercising muscles of patients with muscle glycogen storage disease, we performed ischemic forearm exercise tests and quantitated metabolites appearing in cubital venous blood. Two patients with glycogen storage disease type V and three with glycogen storage disease type VII participated in this study. Basal lactate concentrations lowered in every patient with glycogen storage disease type V or type VII. Two patients with glycogen storage disease type VII, who had markedly elevated concentrations of serum uric acid (14.3 and 11.9 mg/dl, respectively), showed high basal concentrations of ammonia (118 and 79 mumol/liter, respectively; 23 +/- 4 mumol/liter in healthy controls) and of hypoxanthine (23.4 and 20.4 mumol/liter, respectively; 2.0 +/- 0.4 mumol/liter in healthy controls). Other patients showed near normal measurements of these metabolites. After forearm exercise, ammonia, inosine, and hypoxanthine levels increased greatly in every patient studied, in contrast with the lack of increase in lactate levels. The incremental area under the concentration curves for venous ammonia was 13-fold greater in the glycogen storage disease group than in controls (1,120 +/- 182 vs. 83 +/- 26 mumol X min/liter). The incremental areas of inosine and hypoxanthine were also greater in the glycogen storage disease group (29.2 +/- 7.2 vs. 0.4 +/- 0.1 and 134.6 +/- 23.1 vs. 14.9 +/- 3.2 mumol X min/liter, respectively). The incremental areas of ammonia in controls and in glycogen storage disease patients strongly correlated with those of hypoxanthine (r = 0.984, n = 11, P less than 0.005). These findings indicated that excess purine degradation occurred in the exercising muscles of patients with glycogen storage disease types V and VII, and suggested that the ATP pool in the exercising muscles may be deranged because of defective glycogenolysis or glycolysis. PMID- 3861623 TI - Automation and limitation of 17 beta oestradiol dehydrogenase in monitoring ovarian function. AB - An automated enzymatic assay which measures combined concentrations of urinary oestrone and oestradiol within 15 minutes of hydrolysis has been developed using placental 17 beta oestradiol dehydrogenase. This assay is comparable to radioimmunoassay in its precision and sensitivity and is quicker, more convenient, and more economical. The 17 beta oestradiol dehydrogenase assay was used to monitor ovarian response in infertile women being treated through stimulated ovarian cycles or in vitro fertilisation programmes. Because the assay did not respond to oestriol it was less reliable than total urinary oestrogens in monitoring ovarian responses, particularly during treatment with drugs which enhanced oestriol excretion. In natural ovulatory cycles rising 17 beta oestradiol dehydrogenase values preceded peak luteotropin concentrations by up to 18 hours and improved detection of ovulation. The 17 beta oestradiol dehydrogenase assay processes large numbers of urine samples quickly and economically and enables accurate monitoring of oocyte maturity and ovulation. PMID- 3861622 TI - Comparisons of metabolism of apolipoprotein B in normal subjects, obese patients, and patients with coronary heart disease. AB - This study was designed to examine the integrated metabolism of apolipoprotein B (apo B) in very low density lipoproteins (VLDL), intermediate density lipoproteins (IDL), and low density lipoproteins (LDL) in normal subjects, obese patients, and a group of patients with coronary heart disease (CHD). Turnover rates of 131I-VLDL-B, 131I-IDL-B, 125I-LDL-B, and [3H]VLDL-triglycerides (TG) were determined by the multicompartmental analysis that used the model described in the preceding article (Beltz, W.F., et al. 1985. J. Clin. Invest. 76: 575 585). Compared with five normal subjects, four obese subjects had increased synthesis rates of both VLDL-B and VLDL-TG. Production of LDL-B was inconsistently raised in these same patients. Five patients with CHD had enhanced production of both VLDL-B and LDL-B, but secretion rates of VLDL-TG were not increased. Thus, in patients with obesity and in those with CHD, synthesis rates of VLDL particles may be abnormally high. In the obese patients, the VLDL appeared to be of normal composition, but in patients with CHD, the VLDL were relatively poor in TG. The study also showed that a significant fraction of VLDL B is removed directly from the circulation and never reaches LDL regardless of the type of patients. The fraction that does reach LDL is one factor that determines LDL concentrations. PMID- 3861624 TI - A definition of small, medium and large maxillary edentulous ridges. PMID- 3861625 TI - A specialist's view on referrals, for the general practitioner. PMID- 3861626 TI - Oral isotretinoin followed by psoralens and ultraviolet A or ultraviolet B for psoriasis. PMID- 3861627 TI - Peeling skin syndrome. PMID- 3861628 TI - Immunosuppression: a cause of porokeratosis? AB - Two patients are reported in which the development of porokeratosis occurred following chemotherapy for systemic malignancy. Immunosuppression associated with malignancy and chemotherapy may exacerbate or initiate the development of porokeratosis in patients predisposed to alterations of cutaneous growth dynamics. PMID- 3861629 TI - Multiple pulmonary nodules detected by computed tomography: diagnostic implications. AB - Prior to the advent of CT, the radiographic demonstration of multiple nonmiliary lung nodules usually indicated the presence of metastases or, less likely, granulomas. The increased sensitivity of CT at detecting small parenchymal pulmonary densities is accompanied by loss of specificity, creating uncertainty as to the significance of nodules detected at CT in any individual patient. During a 1 year period we reviewed all CT scans in our institution demonstrating three or more focal lung densities, noting these parameters: number of densities, maximum lesion size, presence of calcification as determined visually, and lesion morphology (linear or nodular). Of 137 patients with three or more focal lung densities at CT, nodule diagnosis was established on pathologic or clinical grounds in 114. Metastases accounted for 73%, with primary colon and lung malignancies and lymphoma the most common causes. Malignant nodules were statistically significantly larger, more numerous, and more rounded, whereas calcification was significantly associated with benign disease. However, no single criterion or combination of criteria was foolproof. Based on our results, we offer recommendations for further evaluation of nodules in several common clinical settings. PMID- 3861630 TI - Pancreatic metastases in bone sarcomas: CT demonstration. AB - Two patients with bone sarcomas were found to have pancreatic masses on routine follow-up CT. Although pancreatic metastasis most often occurs in a setting of widely disseminated disease, it may occur as an isolated finding, most often asymptomatic. It may also be responsible for clinical pancreatitis. Both of these presentations have significant implications for further management. PMID- 3861631 TI - Use of closely coupled receiver coils in MR imaging: practical aspects. AB - The use of closely coupled receiver coils in magnetic resonance (MR) imaging of the brain and body is described. Design considerations are outlined, aspects of the choice of materials are discussed, and clinical applications are illustrated. Closely coupled receiver coils can provide a useful improvement in MR image quality. PMID- 3861632 TI - A comparison of methods for contouring the occlusal surfaces of posterior composite restorations. PMID- 3861633 TI - The loss of the remaining natural teeth. PMID- 3861634 TI - Diagnosis and treatment decisions when using bitewing radiographs--a comparison between two dental schools. PMID- 3861635 TI - The effect of a decreasing prevalence of dental caries on the future teaching curriculum. PMID- 3861636 TI - Immediate-polished and as-carved Tytin restorations after three years. PMID- 3861637 TI - [Alveolar ridge augmentation with hydroxyapatite: evaluation of 50 clinical cases]. PMID- 3861638 TI - [Biopsies: general principles, indications and technics]. PMID- 3861639 TI - Delegation of dental acts. PMID- 3861640 TI - [Principle aspects and conclusions of the American study "National Preventive Dentistry Demonstration Program". Impact and applicability in Quebec]. PMID- 3861641 TI - Institutional advertising: a complete success in 1984 and a challenge in 1985, 1986. PMID- 3861642 TI - [Intestinal polyposis type III (Gardner syndrome): presentation of a case and review of the literature]. PMID- 3861643 TI - [Oro-antral communication and its relation to chronic maxillary sinusitis]. PMID- 3861644 TI - [Pregnancy gingivitis: myth or reality?]. PMID- 3861645 TI - Changes in behavior and attitude: a challenge for the Ordre des Dentistes du Quebec in 1985. PMID- 3861646 TI - [Orthodontics: practical considerations with regard to certain orthodontic procedures]. PMID- 3861647 TI - Lactate dehydrogenase-deficient mutants of serotype g Streptococcus mutans. AB - Three LDH-deficient mutants of a serotype g strain of Streptococcus mutans were produced essentially as described by Hillman (1978): They were produced using ethylmethane sulfonate, and isolated using triphenyltetrazolium-glucose agar. Similar attempts to obtain mutants from a serotype c strain were unsuccessful. The g mutant did not revert during 12 weeks of daily transfer in broth, and, when grown in glucose-containing broth, they reached pH values of 4.9 to 5.0, compared with 4.4 for the parent strain. The efficiency of conversion of glucose to cell mass (Yg) was at least as great with the mutants as with the parent strain. The LDH activities of the mutants were less than 1% of that of the parent strain. Like Hillman's (1978) mutants, ethanol, acetic acid, and acetoin were the major products resulting from the metabolism of glucose. Although at pH 7.0 the mutants grew more slowly than did the parent, at pH 5 and pH 6 one of the mutants grew as rapidly as did the parent. The stability, serotype, and ability of these mutants to grow at low pH suggest their potential usefulness for replacement therapy. PMID- 3861648 TI - Predominant obligate anaerobes in human carious dentin. AB - With the adoption of an anaerobic glove box system, we isolated and identified the predominant micro-organisms in lesions of carious dentin from four permanent third molars. The overwhelming majority of the micro-organisms isolated from both shallow and deep layers of carious dentin were obligate anaerobes, suggesting that conditions in the dentin were strictly anaerobic. The predominant obligate anaerobes were Gram-positive rods which were identified as members of the following genera: Propionibacterium, Eubacterium, Arachnia, Lactobacillus, Bifidobacterium, and Actinomyces. Clostridia, Gram-negative rods (Bacteroides and Fusobacterium) and Gram-positive cocci (Peptococcus, Peptostreptococcus, and Streptococcus) were also isolated, although they constituted a minor part of the flora. PMID- 3861649 TI - Comparison of cyclic AMP-dependent protein kinases from salivary glands of four species. AB - Cyclic AMP-dependent protein kinase activity, subcellular distribution, and isozyme profile were compared in rabbit, rat, guinea pig, and mouse in both parotid and submandibular glands. Glands were homogenized under hypotonic conditions and the following fractions isolated: 600 g pellet, 27,000 g pellet, and 27,000 g supernatant. The specific activity of the enzyme was similar in the eight glands and was highest in the 27,000 g supernatant. The average activity in the 27,000 g supernatant was approximately 75% of the total gland activity, although there was considerable variability between tissues and species. After being washed with isotonic buffer, this percentage was increased to an average of 84%. When isozyme patterns of the kinase were examined, the rabbit parotid was unique in that it contained a high percentage of isozyme I as isolated on DEAE cellulose columns. PMID- 3861650 TI - The surface free energy of oral streptococci after being coated with saliva and its relation to adhesion in the mouth. AB - Contact angle measurements on layers of bacteria were used to determine the bacterial surface free energy (gamma b) of a variety of oral streptococcal strains, both without and after being coated with human whole saliva. At least four isolates of each species, either freshly isolated or laboratory strains, were used. The species Streptococcus mutans, S. sanguis, and S. salivarius were homogeneous, having high surface free energies, and were not affected by saliva treatment (gamma b = 106 +/- 12 and 107 +/- 10 erg X cm-2 in the absence and presence of saliva coating, respectively; n = 20). S. mitis had a very low surface free energy (46 +/- 15; n = 5), which was significantly increased after salivary adsorption (71 +/- 14 erg X cm-2; p less than 0.002). The species S. milleri contained strains with both high and low gamma b. Calculation of the interfacial free energy of adhesion (delta F adh) for bacteria from a saliva suspension to solid surfaces with various arbitrary surface free energies (gamma s) showed that, theoretically, most strains will encounter thermodynamically favorable conditions for adhesion to surfaces with a gamma s above 62 erg X cm-2. However, S. mitis strains not coated with saliva would only be able to adhere to surfaces with gamma s lower than this value. Saliva-coating reverses the calculated relationship with gamma s for these strains. The results indicate that an enamel surface with a low gamma s value would be thermodynamically unfavorable for adhesion of most oral streptococci. PMID- 3861651 TI - pH-dependent fluoride inhibition of peroxidase activity. AB - Fluoride was found to be a potent inhibitor of bovine lactoperoxidase and of salivary peroxidase at acid pH values. Inhibition was reversible at neutral pH, and appeared to involve HF binding by the enzyme. Fluoride inhibition of lactoperoxidase occurred with all reductants tested, including thiocyanate, iodide, and guaiacol. Fluoride concentrations for 50% inhibition of enzymatic activity with iodide as reductant were: less than 0.05 mM at a pH value of 4.0, 0.3 mM at 5.0, 4.0 mM at pH 6.0, and more than 10.0 mM at pH 7.0. Salivary peroxidases were found to have lower pH optima but to be approximately as sensitive to acid-dependent fluoride inhibition as was purified bovine lactoperoxidase. The findings suggest that the fluoride in dental plaque may be inhibitory to the antimicrobial peroxidase system. PMID- 3861652 TI - Toxicological assessment of lidocaine in the pregnant rat. AB - Teratogenic and toxicological effects of lidocaine administered during pregnancy were evaluated in the Sprague Dawley rat. High doses of lidocaine administered during specific periods of gestation were shown to produce no apparent adverse toxicological or teratogenic effects. Histological, enzymological, and physical features of the fetuses, utilizing conventional toxicological parameters, were all found to be normal following maternal administration of lidocaine. Analysis of these data suggests that the administration of lidocaine during pregnancy had no detectable adverse effects on the fetus. PMID- 3861653 TI - Reproducibility of computer-aided image-analysis-derived estimates of the depth and area of radiolucencies in approximal enamel. AB - In vivo studies of caries progression from serial bite-wing radiographs require the reproducible detection and measurement of approximal radiolucencies in enamel; the aim of this study was to evaluate the reproducibility of a new computer-aided image analysis method. Three series of radiographs depicting natural caries lesions were employed: films of 11-12-year-old (Hounslow) schoolchildren, dental students from Hong Kong (HKDS), and extracted Hong Kong teeth (EXT). Each surface was "searched" three times, resulting in data from 450, 600, and 180 searches, respectively. Lesion detection was consistent for all but two of the 1230 searches. Average values for the standard error of the mean (SEM) of triple determinations of depth % were between 2.0 and 3.5%, while the mean SEM for area was from 0.03 to 0.04 mm2. Average test/re-test correlations ranged from 0.963 to 0.871 for depth and from 0.963 to 0.884 for area, while average reliability coefficients ranged from 0.937 to 0.821 for depth and 0.963 to 0.886 for area. There was a significant difference (P less than 0.001) between the reproducibility of the two clinical series, with measurements of the Hounslow lesions being more consistent. When compared with the reproducibility of attempts to grade radiolucency size visually, the image analysis method appears to offer considerable advantages, in that consistent estimates of radiolucency size are now possible. This method may facilitate more sensitive assessments of the behavior of lesions over time than has hitherto been possible. PMID- 3861654 TI - The effect of swallowing frequency on oral sugar clearance and pH changes by Streptococcus mitior in vivo after sucrose ingestion. AB - A theoretical study of oral sugar clearance (Caries Res 17:321-334, 1983) suggested that the unstimulated salivary flow rate (UNSTFR) and the volume of saliva present in the mouth before swallowing (VMAX) can greatly affect the rate of sugar clearance. The object of this study was to determine whether variations in UNSTFR, by water infusion into the mouth, and in VMAX, which can be altered by varying the swallowing frequency, would influence sugar clearance and whether changes in VMAX would affect the extent of the pH fall produced by S. mitior in vivo after sucrose consumption. In three experiments on each of ten adult subjects, UNSTFR was measured initially (mean value = 0.55 ml/min), and a swallowing schedule was calculated so that the volumes swallowed were either 0.3 ml or 1.0 ml. After a 10-second rinse with 20 ml of a 10% sucrose solution, the subjects maintained a swallowing frequency such that the volumes swallowed were either 0.3 ml or 1.0 ml at normal UNSTFR or were 0.3 ml when UNSTFR was increased by infusing water at 0.5 ml/min. In all subjects, clearance of sugar was faster at the higher swallowing frequency and at the higher flow rate, as predicted by the theoretical model. Small acrylic splints were made to fit over the lower incisors of ten subjects and to hold in the floor of the mouth an antimony microelectrode covered by a 0.5-mm layer of S. mitior, which was held in place by a dialysis membrane.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3861655 TI - Antibiotic susceptibility of anaerobic bacteria from the human oral cavity. AB - Anaerobic, agar-dilution, minimal inhibitory concentrations (MICs) of 18 antibiotics are given for the numerically important bacterial groups from the human oral cavity. Strains are divided into susceptibility categories using the guidelines for interpretation of MICs suggested by the National Committee for Clinical Laboratory Standards. These guidelines are based on data on antibiotic concentrations attainable in serum following various dosage regimens. MICs are also compared with attainable gingival fluid levels where these are known. The highest percentages of strains were susceptible to tetracycline, with 89% of the 139 strains tested susceptible to serum levels and 97% conditionally susceptible to attainable gingival fluid levels. Ninety-eight percent of strains were conditionally susceptible to attainable gingival fluid levels of minocycline, but many strains, including Actinobacillus actinomycetemcomitans, were only moderately susceptible to attainable serum levels of this tetracycline analogue. Carbenicillin was effective against most groups of organisms, with the important exception of A. actinomycetemcomitans, at serum levels attainable with oral formulations of carbenicillin. Only 2% of the total strains tested were resistant to penicillin, while 33% of strains were categorized as moderately susceptible. Clindamycin was active against many strains of Gram-negative bacteria but was not active against A. actinomycetemcomitans, some Bacteroides, Eikenella corrodens, or the anaerobic vibrios. Metronidazole was active against A. actinomycetemcomitans, all five groups of oral Bacteroides tested, and against Capnocytophaga species. Chloramphenicol was active against A. actinomycetemcomitans, but not against most of the other groups of oral organisms. Nearly all groups contained strains non-susceptible to serum levels attainable with the usual doses of erythromycin, spiramycin, vancomycin, kanamycin, neomycin, streptomycin, doxycycline, oxytetracycline, or chlortetracycline; several strains were resistant to maximum attainable serum levels of each of these antibiotics except doxycycline. PMID- 3861657 TI - Plasma fluoride levels in man following intake of SnF2 in solution or toothpaste. AB - The degree and rate of fluoride absorption in five volunteers were studied after ingestion of SnF2 and NaF solutions or SnF2 toothpaste. The fluoride concentration in plasma was followed for eight hours. The relative bio availability of fluoride was calculated and was similar for both the NaF and SnF2 solutions, although the latter solution showed a somewhat faster absorption rate. The bio-availability of fluoride from the SnF2 dentifrice was 85%. PMID- 3861656 TI - Streptococcus mutans and Lactobacillus detection in the assessment of dental root surface caries risk. AB - Forty-five subjects contributing 150 root surfaces with gingival recession were sampled seven times over a 32-month period. We calculated isolation frequencies of lactobacilli on selective Rogosa SL agar and S. mutans in a sensitive enrichment broth and on mitis salivarius agar. Both S. mutans and lactobacilli were isolated more frequently from surfaces which became carious than from those remaining caries-free. Isolation frequencies were also higher for caries-free surfaces in caries-active subjects than for caries-free surfaces in caries inactive subjects. The presence or absence of S. mutans and lactobacilli in samples taken at baseline could discriminate between subjects who were to be root caries-active and those who were to remain root-caries-inactive during the subsequent observation period. Moreover, if both bacteria were detected or only S. mutans was detected on a root surface at its entry into the study, that surface had a greater risk for developing a root lesion. However, the tests could not predict which root surfaces within the mouths of caries-active subjects were to become carious. Analysis of the data suggests that simple microbiological detection tests may be useful in identifying patients at high risk of root caries. PMID- 3861658 TI - Changes in oral health from 1973 to 1982 of 13-15-year-old schoolchildren residing in three different fluoride areas in Finland. AB - The aim of the present study was to analyze the change from 1973 to 1982 in the oral health conditions of 13-, 14-, and 15-year-old school-children residing in three different fluoride areas in Finland. Oral hygiene, as measured with the Visible Plaque Index (Ainamo and Bay, 1975), had improved significantly both among 13-year-old girls (P less than 0.01) and among boys of the same age (P less than 0.05). A highly significant improvement (P less than 0.001) of gingival health, as measured with the Gingival Bleeding Index (Ainamo and Bay, 1975), was observed for boys but not for girls. The striking change was for the DFST (T = total) and FSAA (A = approximal) scores for the totals of 180 girls and 180 boys. This improvement in dental health was mainly due to a dramatic decline of caries in the low-fluoride (0.2 ppm F) area, whereas in the high-fluoride area (2.5 ppm F), the improvement in oral hygiene and gingival health was the greatest. The results support earlier assumptions that caries and gingivitis are separate and mutually independent disease entities. The study further suggests that local fluoride treatments can provide caries-preventive benefits similar to those achieved by community water fluoridation, although at greater cost. The comparison in time revealed that most of the differences in oral health, observed in 1973 both between sexes and between the different fluoride areas, had disappeared by the time of the 1982 examination. PMID- 3861659 TI - The reliability of the iodide permeability test applied to the natural dentition. AB - The purpose of this study was to assess the reliability of the iodide permeability test when applied to the human dentition. Twenty-two subjects were seen once a week for three weeks. At each visit, consecutive iodide permeability measurements were obtained: four from the right central incisor and four from the left. Results of these trials were examined for the degree of variability from one replication to another within the same day, as well as for the variability from one week to the next. Within-day and between-week reliability of the test results was assessed by two indices: the Hoyt Index, which estimates the reliability of the average of the four replicate measurements per tooth, and the Intraclass correlation, which estimates the reliability of a single measurement. The results indicate that the iodide permeability test produces sufficiently replicable measurements for use in future clinical studies. PMID- 3861660 TI - Victims of our own success. PMID- 3861661 TI - Current and future projections of dental school patient availability. AB - Results of a mail questionnaire received from 59 United States and ten Canadian dental schools indicated a potentially serious problem in obtaining and maintaining dental teaching patients. Most schools report at least one shortage that could eventually compromise the clinical education process. Future projections indicated a continuing problem due to perceived reductions in disease incidence. The importance of addressing this problem is accentuated by the dental schools' educational mission to provide sufficient clinical experiences in all subject areas of dentistry. The information derived from the questionnaire should provide background for dental administrators as they respond to the patient availability problem. PMID- 3861662 TI - Current availability of patients in dental hygiene programs. AB - Dental hygiene programs were surveyed to determine current availability of patients to meet the training needs of dental hygiene students. Eighty-six percent of the programs responded. Widespread inadequate to marginal patient availability was reported in periodontics and radiology. Two major reasons cited for patient shortages were, first, that completion of treatment requires too much time, and, second, that people are unaware of the scope of services performed by students. Patient shortages do not appear to be contributing to changes in the curriculum or fiscal problems in dental hygiene programs. PMID- 3861663 TI - The relationship of marital status and living arrangement to stress among dental students. AB - A survey conducted at one dental school was designed to assess the relationship between dental students' perceived level of stress and two possible indicators of social support, marital status, and living arrangements; to examine whether sex differences occurred in this relationship; and to assess the effect of marital status and gender on students' preferences for support services. A total of 484 students were surveyed, with 298 completing the survey instrument, resulting in a 62 percent response rate. The findings indicated that academic pressures are responsible for higher levels of stress among dental students than are personal, nonacademic stresses, with the exception of financial pressures. Only three of 32 sources of stress were affected significantly by marital status: "loneliness," "difficulties in love relationships," and "child-care responsibilities." The relationship between marital status and stress differed by sex; never-married females and separated/widowed/divorced males reported higher levels of stress than their counterparts. Living arrangement showed significant differences for four of the 32 stressors (the three listed above and "sex-related problems") and appeared to provide a better measure of social support than marital status. Nonacademic support programs were rated by students, regardless of marital status, as more desirable than those that focused on academic skills. PMID- 3861664 TI - Analysis of personality traits of the contemporary dental student. AB - The Allport-Vernon-Lindzey Study of Values (AVL) and the Myers-Briggs Type Inventory (MBTI) were administered to four classes of students upon their matriculation into dental school and readministered during each year until graduation. Over the four years, scores on the economic and political scales of the AVL increased significantly but decreased significantly on the social scale. Female students were more aesthetic than males and less politically inclined. On the MBTI, scores remained relatively stable over the entire four years. However, females were significantly more intuitive and more feeling than males. In general, this sample of dental students, who graduated in 1979, 1980, 1981, and 1982, was quite similar in personality to samples of dental students of the early 1960s. PMID- 3861665 TI - Curriculum guidelines for pathology and oral pathology. PMID- 3861666 TI - Curriculum guidelines for periodontics. PMID- 3861667 TI - A classification of dental schools by effort reporting. PMID- 3861668 TI - A compendium of objectives for geriatric dentistry. AB - A two-phase survey was conducted with 82 persons identified as having special knowledge in geriatric dentistry. In Phase 1, they were asked to list competencies required of the geriatric dentist. In Phase 2, they were asked to rate the relative importance of 150 competencies for five different educational settings: dental school, general practice residency, prosthodontic specialty program, geriatric fellowship program, and continuing education. The resulting compendium of objectives suggests that geriatric dentistry should become integrated into general dentistry, with relatively few competencies reserved for specialists. PMID- 3861669 TI - Characteristics of dental teaching patients. AB - Questionnaires were distributed to adult patients in a representative national sample of nine dental schools to solicit information on patient demographics, use of services, and perception of the care received. Responses from 2,346 patients were analyzed and compared to findings from various local studies. Results indicate: age range of patients and type of dental needs available to students is extremely variable among schools, the major referral system is through friends and relatives, most patients pay for all of their care and seek care at dental schools because of reasonable costs, transportation and parking pose significant problems for some patients, the majority of respondents had been patients for two years or less, and many patients want all of their clinical and interpersonal dental needs met in the school setting. Dental schools seriously need to consider such factors in light of current and projected teaching patient shortages. PMID- 3861671 TI - Teaching the detection of child abuse in dental schools. PMID- 3861670 TI - Educational factors associated with clinician knowledge about bacterial endocarditis. AB - This study measured the impact of relatively formal educational experiences (general practice residency and continuing education) and a variety of informal educational opportunities (professional membership activities, dental journals received, patterns of consulting and referral) on a particular body of knowledge (dentists' knowledge about the management of patients at risk for bacterial endocarditis). Data were collected through telephone interviews with 217 dental general practitioners in New York State. Linear regression analyses indicated that age made a significant contribution to the explanation of knowledge level in all models tested. Neither general practice residency experiences nor continuing education exposure in the past year made a significant contribution to the explanation of knowledge. The other more informal educational variables tested sometimes made a significant contribution when controlled for age; however, the explanatory power of these variables often varied according to respondents' locale (urban vs. rural). PMID- 3861672 TI - Intraoral x-ray film holders and infection control in U.S. dental schools. PMID- 3861673 TI - Teaching venipuncture techniques to dental students. PMID- 3861674 TI - Senior survey update: student debt increases while practice plans stabilize. PMID- 3861675 TI - Stress in dental students. PMID- 3861676 TI - Modular vs. traditional curriculum. A comparison of student dissatisfactions. PMID- 3861677 TI - A treasury of dentistry. What about dentistry and literature? PMID- 3861678 TI - The best deal around. PMID- 3861679 TI - Providing endodontic care. PMID- 3861680 TI - Update on hepatitis. PMID- 3861681 TI - Licensure by credentials. Is it working? PMID- 3861682 TI - Urinary mercury levels in US dentists, 1975-1983: review of Health Assessment Program. PMID- 3861683 TI - Traumatic bone cyst: report of case. AB - A case of traumatic bone cyst has been presented that illustrates the less common findings of cortical expansion, inferior alveolar paresthesia, and multiplicity of lesions. A brief review of the literature is also presented. PMID- 3861684 TI - Bilateral gemination with talon cusp: report of case. AB - The extraction of the geminated maxillary central incisors was selected as the preferred treatment in this case because of the impossibility of properly recontouring these teeth. Although the crowns could have been reshaped somewhat to conform to a more normal size and shape, the roots were so wide that approximation of the central and lateral incisor crowns would have been impaired. The use of normally shaped, large lateral incisors in place of abnormal central incisors gives a better occlusion and a more esthetic result at the end of the treatment. PMID- 3861685 TI - An evaluation of temporomandibular joint sounds. AB - The purpose of this study was to obtain authoritative opinion on the importance of joint noises. Experts in the areas of orthopedics, rheumatology, and arthritis were asked four questions to evaluate the importance of clicking and crepitus in joints other than the temporomandibular joint (TMJ). The general response of these experts indicated that clicking in the absence of other symptoms is not important, clicking in the presence of other symptoms may be important, crepitus in the absence of other symptoms may be important, and crepitus in the presence of other symptoms is important. Caution is advised in treating clicking when it is the only sign. PMID- 3861686 TI - The use of a soft denture liner for chronic residual ridge soreness. AB - Chronic residual ridge soreness in patients with complete dentures can be caused by various factors. A differential diagnosis between physiologic or anatomic problems (or both) and functional deficiencies in the patient's present dentures must be made. The functional deficiencies can often be eliminated easily, whereas physiologic and anatomic problems may be more difficult to correct, especially in the geriatric patient. If the functional deficiencies in the patient's dentures have been corrected and surgical procedures are not a viable alternative, placement of a long-term resilient liner can often resolve the chronic residual ridge soreness that is present in denture patients. Properly placed and properly cared for silicone or silicone rubber resilient denture liners can provide comfort for over 70% of patients with chronic residual ridge soreness for 3 to 5 years and often longer. PMID- 3861687 TI - The hemodynamic and plasma catecholamine responses to routine restorative dental care. AB - Eleven healthy, normotensive males undergoing routine restorative dental care were evaluated during treatment for possible hemodynamic alterations in response to potential sympathetic nervous system stimulation. It is concluded that once acceptable local anesthesia is achieved, the hemodynamic and sympathetic responses to routine restorative dental care are minimal. These findings serve as a baseline for further studies evaluating the response of medically and pharmacologically compromised patients to similar dental procedures. PMID- 3861688 TI - White, exophytic lesion of the left lateral surface of the tongue. AB - Verrucous carcinoma is an unusual variant of squamous cell carcinoma; it comprises approximately 5% of all oral malignancies. The buccal mucosa, gingiva, and tongue are the most commonly involved areas within the oral cavity. Histologically, verrucous carcinoma can present a diagnostic dilemma. The basement membrane is often intact, which may cause the pathologist to misinterpret these carcinomas as hyperkeratosis and severe dysplasia. The preferred treatment for this lesion is wide local excision. Regional lymph node dissection is usually not necessary and radiation therapy appears to be contraindicated. Close follow-up is recommended. PMID- 3861689 TI - Consensus development conference statement on anesthesia and sedation in the dental office. National Institutes of Health. PMID- 3861691 TI - [Fluorides for caries prevention. I. Mode of action of fluoride in caries prevention]. PMID- 3861690 TI - Effect of commercial formulation of four organophosphorus insecticides on the ovaries of a freshwater teleost, Mystus vittatus (bloch)--a histological and histochemical study. AB - The chronic effect of an exposure to a sublethal concentration of commercial formulation of 4 organophosphorus insecticides such as birlane (chlorfenvinphos), gardona (tetrachlorvinphos), phosdrin (mevinphos) and malathion on midvitellogenic ovaries of Mystus vittatus was investigated using several histological and histochemical techniques. The loss of stage II and III oocytes accompanied by a significant decline in gonadosomatic index was recorded. The vitellogenesis in treated fishes was ceased as the oocytes did not advance to further stages as evidenced by the absence of lipid yolks and the lack of a PAS positive follicular layer. The RNA content of remaining stage I oocytes of exposed fishes resembled that of the stage I oocytes of the control fishes. The absence of delta 5-3 beta-hydroxysteroid dehydrogenase suggested the lack of steroidogenesis. Reduced glucose-6-phosphate dehydrogenase activity was also observed. The significance of these observations has been discussed in light of available literature. PMID- 3861692 TI - [Clinical studies of metal denture bases using the Trutissu metal]. PMID- 3861693 TI - [Clinical application of a Muscle Dysfunction Monitor for the measurement of the duration of the EMG silent period in the masticatory muscles]. PMID- 3861694 TI - [Representation of materials used for interocclusal records in dentate patients from the standpoint of clinical application]. PMID- 3861695 TI - [Clinico-statistical observations of maxillofacial fractures in the past 10 years at the Gifu College of Dentistry hospital]. PMID- 3861696 TI - [Immobilization of spermatozoa by peritoneal fluid in sterile women. Preliminary results]. AB - Peritoneal fluid from sterile women where the state of the pelvis is changed by endometriosis, inflammation, infection, and in certain cases where it appears normal laparoscopically, can immobilise spermatozoa in minutes or hours. This toxicity against male gametes could be an explanation of the mechanism for such sterility. The tubes and the ovaries are bathed in this liquid in the periovulatory phase when they are largest in size. If these first observations are confirmed fully many theoretical, practical and therapeutic implications must follow. PMID- 3861697 TI - Progress with intellectual integrity. PMID- 3861698 TI - Graphic display of total space analysis data. PMID- 3861699 TI - Readout. PMID- 3861700 TI - Leveling the curve of Spee: a new prediction formula. PMID- 3861701 TI - Class II division I treatment utilizing the systems of directional force. PMID- 3861702 TI - Class II, division I, bi-maxillary protrusion. A case report. PMID- 3861703 TI - Two stage treatment of a Class II division I malocclusion. A case report. PMID- 3861704 TI - Principles of mechanical ventilation. Critical care medicine. PMID- 3861705 TI - Case of the month. Diagnosis of ulcer present on the lateral border of the tongue. PMID- 3861706 TI - Stafne's idiopathic bone cavity--a case report. PMID- 3861707 TI - Osteogenesis imperfecta--a case report. PMID- 3861708 TI - A clinical study of localized gingival recession treated by lateral sliding flap. PMID- 3861709 TI - Interpret your X-ray. Artefacts in x-ray films. PMID- 3861710 TI - Case of the month. Chronic ulcer on the lateral border of the tongue. PMID- 3861711 TI - Interpret your X-rays. Mandibular fractures. PMID- 3861712 TI - Euclidean endometry--a method of tooth length appraisal. PMID- 3861713 TI - Cystic complex composite odontoma--a case report. PMID- 3861714 TI - Comparative study of wear resistance of acrylic teeth produced in India. PMID- 3861715 TI - Towards a new strategy for dental health. PMID- 3861716 TI - Viral infections in childhood leukemia. AB - The importance of viral infections in 150 children receiving therapy for leukemia was studied prospectively by application of comprehensive viral diagnostic procedures. One hundred five viral infections were identified, with herpes simplex virus and varicella-zoster virus being the most common agents. The spectrum of viruses associated with serious illness was wider than that in previous studies, and adenoviruses, parainfluenza viruses, rhinoviruses, and enteroviruses were important causes of morbidity. Viral isolation was the most sensitive diagnostic procedure used because complement fixation serology was falsely negative in two-thirds of cases. The occurrence of viral infection may be a previously overlooked important cause of respiratory tract infection and acute pyrexia of unknown origin. Viral infection rates were highest in patients with acute myeloblastic leukemia, in induction and relapse, and in patients treated with newer chemotherapeutic schedules. Thus, viruses are important pathogens in children with leukemia. PMID- 3861717 TI - Mucoceles present at birth in two siblings: a case report. PMID- 3861718 TI - Dental problems in musicians. PMID- 3861719 TI - [Proper use of medication in dentistry]. PMID- 3861720 TI - [How to manage white spot]. PMID- 3861721 TI - [Use of ultrasonics in endodontics]. PMID- 3861723 TI - [How to use various types of syringes]. PMID- 3861722 TI - [Changing trends in dental diseases. A report based on the findings of the Commission on Oral Health, Research and Epidemiology]. PMID- 3861724 TI - [Amelogenesis: what we know: a discussion]. PMID- 3861725 TI - [Study of occlusal contact area by occlusal adjustment. 1. Morphological analysis of premature contact area in the intercuspal position]. PMID- 3861726 TI - [Protective efficacy of antiserum against Bacteroides gingivalis]. PMID- 3861727 TI - [Histopathological study on healing after gingivectomy in rats--changes in nerve fibers and specialized nerve end organ distribution]. PMID- 3861728 TI - [Release of lysosomal enzymes from rabbit polymorphonuclear leukocytes by 3 subspecies of Bacteroides species]. PMID- 3861729 TI - [Section assay of bacteria phagocytized by leukocytes]. PMID- 3861730 TI - [Bone resorption by human monocytes]. PMID- 3861732 TI - [Insoluble immune complexes in healthy and inflamed gingiva in humans]. PMID- 3861731 TI - [Neutrophil function in patients with periodontal diseases. 1. Role of serum in the NBT reduction test]. PMID- 3861733 TI - [Radiographic study of vertical bone loss due to open interproximal contacts and tooth mobility in periodontal disease]. PMID- 3861734 TI - [A fundamental study on periodontal examination--comparison of probing depth between whole- and partial-mouth recording methods]. PMID- 3861736 TI - [Effect on subgingival plaque control of a pulsating water-jet device]. PMID- 3861735 TI - [Immunopathological studies of phenytoin-induced gingival hyperplasia]. PMID- 3861737 TI - [The laboratory course for periodontal undergraduate education using a new model developed in our department]. PMID- 3861738 TI - [Clinical and histopathological observations of the gingiva in heart patients treated with nifedipine--a report of 3 cases]. PMID- 3861739 TI - [Remission of rheumatoid arthritis following periodontal treatment. A case report]. PMID- 3861740 TI - [Depression of neutrophil chemotaxis and lysosomal enzyme release by Bacteroides gingivalis]. PMID- 3861741 TI - [A case report of cleidocranial dysostosis]. PMID- 3861742 TI - [Effect of dentin mineralization in the rachitic rat. Fluorescence microscopy and scanning electron microscopy studies]. PMID- 3861743 TI - [A longitudinal study of the soft tissue profile changes in 6-11-year-old children]. PMID- 3861744 TI - Reactivation of tritonated models of human polymorphonuclear leukocytes (PMNs): a computer-assisted analysis. AB - The orientation (chemotaxis) and locomotion (chemokinesis) of human polymorphonuclear leukocytes (PMNs) are generated by an internal movement mechanism that involves active cytoplasmic movement; they are influenced by external environmental and ionic conditions. We have studied the degree to which the orientation and movement mechanisms of PMNs are self-contained within the cell and the degree to which they are under membrane control. PMNs were partially and selectively demembranated by treatment with the non-ionic detergent, octyl phenoxyl-polyethoxyethanol (commercially known as Triton X-100) under controlled conditions. The tritonated PMNs (referred to in the literature as models) were non-motile and non-locomotory. Addition of ATP/Mg++ with a trace amount of Ca++ to the medium was followed by reactivation of the tritonated PMN models to move again as motile cells. Although these reactivated PMN models actively locomoted, they could no longer orient to chemoattractants. Thus, the reactivation process restored the physical self-contained movement parameters but could not reestablish the orientation capacity (chemotactic responsiveness) that was characteristic of live PMNs. The demembranation process apparently destroyed the chemotactic receptors and/or eradicated the coordination function of the membrane. Videotapes of normal (control) as well as reactivated PMN movement were analyzed for movement characteristics. These characteristics were objectively analyzed with a newly designed computer-assisted micro-image-processing technique whereby the videotapes were digitized and quantified and the actual PMN movement printed out in computer-graphics and tracings (Freeman codes) for confirmation of orientation and movement arising as a result of reactivation. PMID- 3861745 TI - Studies of peritoneal macrophage function in murine systemic lupus erythematosus. 2. Nature of elevated resident peritoneal cells in NZB and (NZB x NZW)F1 mice. AB - The numbers of resident peritoneal cells recovered from NZB and (NZB X NZW)F1 hybrid mice, which develop systemic lupus erythematosus (SLE), increased strikingly with age as compared with cells recovered from normal mice. The rise paralleled the onset of anti-DNA antibodies, occurring earlier in females than in males. The increased number of cells was due to an accumulation of medium-sized cells with an indeterminate appearance, but with the functional characteristics and cell markers typical of a macrophage. The unusual cells were esterase, F4/80 and Mac-1 positive, peroxidase, and Alcian blue negative, and were shown on sedimentation velocity separation to be phagocytic for EA and C3 (serum-treated) zymosan; 47-48% of peritoneal cells were Ia positive. PMID- 3861746 TI - In vitro antiviral properties of endotoxin-activated rat Kupffer cells. AB - Kupffer cells isolated from the liver of normal rats were checked for their antiviral activities. The intrinsic antiviral effect against vaccinia virus was high whether the cells were activated in vitro with endotoxin or not. The expression of the extrinsic antiviral activity measured by mixing isolated Kupffer cells with vaccinia-virus-infected target cells was remarkably enhanced by prior treatment of the Kupffer cells with LPS. Interferon was shown to be not responsible for that inhibitory activity. Different experimental data suggest that the virus replication in the target cells is blocked at a late stage in the replication cycle. PMID- 3861747 TI - Characteristics of macrophages in irradiation chimeras in mice reconstituted with allogeneic bone marrow cells. AB - Biological and immunological characteristics of the reticuloendothelial system of irradiation bone marrow chimeric mice and macrophages collected from various tissue sources of the mice were studied. The chimeras showed comparable activities in carbon clearance to those of normal donor or recipient mice. The macrophages from spleen, lymph node, bone marrow, peripheral blood, liver, peritoneal cavity, and lung were demonstrated to be of donor marrow origin. They showed almost the same enzyme activities and phagocytic capability of sheep erythrocytes (SRBC, E), SRBC sensitized with anti-SRBC IgG (EA), and SRBC sensitized with anti-SRBC IgM and coated with complement (EAC) as those of normal mice. Proportions of Fc receptor and complement receptor-positive cells are also in normal range. In addition, the antigen-presenting capability of the chimeric macrophages for in vitro primary antibody response to SRBC was intact. These observations suggest that the reticuloendothelial system and macrophages of allogeneic bone marrow chimeras where donor and recipient differ at the major histocompatibility complex have no defect so far as could be ascertained by the present study. PMID- 3861748 TI - Preparation for hapten help by glucan, muramyl dipeptide, and its L-ala-Glycerol mycolate derivative. AB - Previously, we reported that one of the factors that determines whether or not an animal will be prepared for hapten help after priming is the type of adjuvant used. The present work was undertaken, therefore, to determine which of a diverse variety of adjuvants or biological response modifiers would be effective. They included Freund's complete (CFA) and incomplete (FICA) adjuvants, particulate glucan, muramyl dipeptide (MDP), and its L-ala-glycerol-mycolate derivative. Help by the azobenzenearsonate (ABA) hapten was measured as the augmentation of the anti-bovine gamma-globulin (BGG) plaque-forming cell (PFC) response to ABA-BGG of mice that had been hapten-primed with ABA conjugated to ovalbumin (OVA). The results showed that FICA was ineffective. MDP was effective but only if administered with FICA during hapten-priming. MDP-L-ala-glycerol-mycolate was effective without any adjuvant but only within a narrow dose range. Particulate glucan was as effective as CFA in preparing mice for hapten help. As the macrophage is the primary cellular target of those biological response modifiers that were effective, we conclude that it plays an important role in the cellular interaction involved in the mediation of hapten help. PMID- 3861749 TI - Monocytes and neutrophils oxidize low density lipoprotein making it cytotoxic. AB - Free radicals are believed to be involved in leukocyte induced tissue injury. The present studies were performed to determine whether low density lipoprotein (LDL) might serve as a mediator of tissue injury after leukocyte induced free radical oxidation of LDL. Our results show that incubation of LDL with monocytes or polymorphonuclear leukocytes (PMN) leads to oxidation of the lipoprotein rendering it toxic to proliferating fibroblasts. Monocyte activation enhances these effects. Butylated hydroxytoluene (BHT), vitamin E (vit E) and glutathione (GSH) virtually prevent the oxidation of LDL and the formation of cytotoxic LDL, indicating that these alterations are mediated by leukocyte-derived free radicals. This is the first demonstration that short-lived free radicals emanating from phagocytic cells could mediate cell injury through the action of a stable cytotoxin formed by the oxidation of LDL. The fact that lipoproteins can transfer a cytotoxic effect from leukocytes to proliferating cells reveals a pathway for cell destruction which may have implications in atherosclerotic plaque progression, macrophage mediated toxicity to tumor cells and tissue injury by inflammatory processes. PMID- 3861750 TI - Enhanced activity of the macrophage-like cell line J774.1 following exposure to gamma radiation. AB - Exposure of the macrophage-like cell line J774.1 to 20 gray of cobalt-60 gamma radiation resulted in a block of tritiated thymidine incorporation, along with an increase in cell "activation," as assessed by increases in lysosomal enzyme and ectoenzyme content, PMA-induced H2O2 production, and NBT staining, ingestion of E(IgG), spreading, and membrane ruffling. These changes are evident within 1 day postradiation and peak at 4 days postradiation. PMID- 3861751 TI - The motile response of lung macrophages: theoretical and experimental approaches using the linear under-agarose assay. AB - The alveolar macrophage plays an important role in the lung's defense against inhaled particles, but few studies have addressed the motile behavior of these cells. In this study, we measured alveolar macrophage random motility using a modification of the under-agarose assay. The cells were exposed to a uniform concentration of F-norleucyl-leucyl-phenylalanine (FNLLP) in an agarose system, establishing conditions for stimulated random motility (or chemokinesis). Experimental results were compared with a theoretical model of cell migration. In this model, chemokinesis was expressed as a random motility coefficient, mu, which is the cellular equivalent of a diffusion coefficient for a molecule. The experimental data that described the migration of alveolar macrophages (density profiles) agreed well with the theoretical model. The random motility coefficient ranged from 1 X 10(-9) cm2/sec (no FNLLP) to a maximum of 1 X 10(-8) cm2/sec at 10(-9) M FNLLP. For concentrations of FNLLP greater than 10(-9) M, the random motility decreased to a constant value of 3 X 10(-9) cm2/sec. The maximum random motility response was observed at an FNLLP concentration one order of magnitude below the measured FNLLP equilibrium dissociation constant, Kd, of 6 X 10(-8) M for alveolar macrophages and was essentially constant over a large range of FNLLP concentrations on either side of the Kd value. These results suggest that such a combined experimental and theoretical approach reduces the limitation of previous techniques that depended largely on physical characteristics of the assay and more closely identifies and measures intrinsic properties of cell motility. PMID- 3861752 TI - Analysis of human monocyte chemoattractant binding by flow cytometry. AB - The chemotactic peptide fMet-Leu-Phe-Lys is a potent chemoattractant for human blood monocytes. However, only one-third of the monocytes respond. To determine whether or not lack of response reflected absence of attractant receptors, we equilibrated peripheral blood mononuclear cells with fMet-Leu-Phe-Lys-FITC and analyzed binding by flow cytometry. The fluoresceinated peptide bound rapidly at 0 degree C, and the amount bound approached saturation with increasing concentration. The percentage of blood monocytes that bound the peptide was 60 +/ 8 (SEM for seven experiments). In contrast, only 36 +/- 3% (SEM for 16 experiments) of monocytes responded to the attractant by directed migration. It follows that, among the 64 nonmigrating monocytes per 100 total monocytes, approximately 40, or two-thirds of them, fail to bind attractant; the remaining one-third bind attractant but do not respond with directed movement. PMID- 3861753 TI - Dorsal lateral plate mesoderm influences proliferation and differentiation of hemopoietic stem cells derived from ventral lateral plate mesoderm during early development of Xenopus laevis embryos. AB - The developmental pattern of dorsal and ventral lateral plate mesoderm was examined by explanting these regions and culturing them in serum-free conditions for 10 days. Under these circumstances, ventral lateral plate mesoderm gave rise to hemopoietic cells, and dorsal lateral plate mesoderm gave rise to stromal cells. Comparison of the differentiation pattern observed when dorsal and ventral mesoderm were cultured separately versus the pattern observed when dorsal and ventral mesoderm were cultured together revealed that dorsal mesoderm influenced the differentiation of ventral-derived hemopoietic cells. Ventral mesoderm cultured alone gave rise to erythrocytes and granulocytes. However, in the presence of dorsal mesoderm, ventral mesoderm gave rise to erythrocytes, monocytes, and granulocytes. Moreover, dorsal mesoderm functioned to maintain the proliferation and differentiation potential of progenitor cells as determined using a colony-forming cell assay (CFU-c). PMID- 3861754 TI - The current status of human monocyte-mediated cytotoxicity against tumor cells. PMID- 3861755 TI - Effect of surgical bursectomy on the ellipsoid, ellipsoid-associated cells, and periellipsoid region of the chicken's spleen. AB - Surgical bursectomy resulted in cellular depletion of the periellipsoid white pulp, confirming its bursa dependency. Also, in bursectomized birds, the ellipsoid could not be identified, although a small number of abnormal ellipsoid associated cells (EAC) were observed in the periellipsoid region. The most characteristic finding was the degeneration of the EAC. Degeneration of EAC indicated that the intact bursa was mandatory for normal differentiation of cells of the periellipsoid white pulp into EAC. The promoting effect of the bursa might take place by a bursal hormone. The histological impairment of the EAC was followed by reduced carbon binding and migrating capabilities. Bursectomy resulted in a shift in bacterial phagocytosis in that many cells of the periellipsoid phagocytosed Salmonella. The reduced heterophil infiltration of the ellipsoid in bursectomized birds might be explained by the impaired granular content of the EAC. The impaired migration capability of the EAC might contribute to the low number of germinal centers in bursectomized birds. PMID- 3861756 TI - Monocytic origin and postnatal mitosis of intravascular macrophages in the porcine lung. AB - Ultrastructural studies of near-term to 2-month-old pigs were done to document characteristics and developmental changes of intravascular macrophages in pulmonary capillaries. Evidence is presented that blood monocytes colonize the porcine lung perinatally, replicate within capillaries postnatally, and attach to endothelium by intercellular junctions during differentiation. Major ultrastructural features of differentiated intravascular macrophages are adhesion to capillary endothelium, pseudopods, phagosomes, and tubular structures of micropinocytosis vermiformis. Ultrastructure indicates that intravascular macrophages are cells of the mononuclear phagocyte system involved in several functions (eg, blood cell sequestration) that are usually attributed to hepatolineal macrophages. In newborn and 3-day-old pigs, the majority of cells closely apposed to endothelium consisted of few differentiated monocytes, but in 7-day-old and older animals, most cells that were joined to endothelium had characteristics of differentiated intravascular macrophages. PMID- 3861757 TI - Ki-M2R, a new specific monoclonal antibody, discriminates tissue macrophages from reticulum cells and monocytes in vivo and in vitro. AB - Utilizing rat peritoneal macrophages as the immunogen, a new monoclonal antibody enabling differential monitoring of the mononuclear phagocyte system (MPS) by immunohistochemistry has been raised. Designated Ki-M2R, this antigen could be detected with the immune alkaline phosphatase reaction on all macrophages including those of bone marrow, lymphatic sinuses, lymphoid follicles, splenic red pulp, and von Kupffer cells of the liver, as well as on macrophages of connective tissue, renal interstitial tissue, serous cavities, and gastrointestinal tract. Langerhans cells--the MPS-derived reticulum cells of the epidermis--interdigitating reticulum cells, and dendritic reticulum cells of lymphoid follicles were invariably negative. Blood monocytes were rendered positive only after evolving into macrophages upon appropriate stimulation. Thus, Ki-M2R selectively labels monocytes after transformation into macrophages. PMID- 3861758 TI - The economics of American dentistry: no need to panic. PMID- 3861759 TI - A look at dental manpower and related issues. PMID- 3861760 TI - The private dental school's dilemma. PMID- 3861761 TI - Dental manpower--the dental school's dilemma in a state institution. PMID- 3861762 TI - The future of dentistry. PMID- 3861763 TI - Commentary on resistance to fracture by twisting: ANSI/ADA Specification No. 28 and No. 58. PMID- 3861764 TI - An in vitro comparison of the efficacy of the step-back technique versus a step back/ultrasonic technique in human mandibular molars. PMID- 3861765 TI - Root canal wall thickness of mandibular molars after biomechanical preparation. PMID- 3861766 TI - The pH of local anesthetic/calcium hydroxide solutions. PMID- 3861767 TI - The effects of various sterilization methods on the torsional strength of endodontic files. PMID- 3861768 TI - Osseous healing kinetics after apicoectomy in monkeys: II. A quantitative histological appraisal. PMID- 3861769 TI - Sulfate conjugation of monoamines in human brain: purification and some properties of an arylamine sulfotransferase from cerebral cortex. AB - An arylamine sulfotransferase (PST-M) from human brain cortex that is involved in the formation of O-sulfate esters of monoamines has been purified 272-fold by ammonium sulfate fractionation, gel filtration, DEAE-cellulose ion-exchange chromatography, chromatofocussing, and hydroxyapatite chromatography. A molecular weight of 62,000, pK of pH 5.8, and an optimum pH for the reaction at 7.8-8.0 with respect to tyramines have been determined. This enzyme possesses an extremely high affinity for dopamine and m-tyramine based on the low Km values and is moderately active toward noradrenaline and p-tyramine. Serotonin is a poor substrate. In contrast, another sulfotransferase, PST-P, which has been separated from PST-M and partially purified, exhibited a very high affinity for phenol and nitrophenols but was inactive toward the amine sulfate acceptors. In the human brain the specific activity toward dopamine as well as the ratio of activity toward dopamine/phenol was considerably higher than those for rat, hog, and bovine brains. PMID- 3861770 TI - Glucocorticoid-mediated increases in glycerol phosphate dehydrogenase activity is inhibited by the phorbol ester tumor promoters. AB - An oligodendroglial specific property, glucocorticoid regulation of glycerol-3 phosphate dehydrogenase (GPDH) levels, was inhibited in C6 rat glioma cells when 4 beta-phorbol 12-myristate 13-acetate (PMA) was added to the cultures. PMA inhibited GPDH induction in both logarithmic- and stationary-phase cells. These events are most likely mediated through the phorbol ester receptor since the ability of various phorbol ester analogs to compete with the ligand [3H]4 beta phorbol 12,13-dibutyrate for binding to the receptor correlates with the ability the particular analog has to inhibit GPDH induction. Additionally, like tumor promotion in vivo, the inhibition of GPDH induction is reversible. The PMA effect is not restricted to the C6 cell line since PMA also inhibits GPDH inducibility in another rat glioma cell line. This PMA-mediated event has been partially characterized. PMA did not affect the overall rate of protein or RNA synthesis. It was ineffective in altering both glucocorticoid accumulation to the nucleus and the rate of GPDH degradation. It appears likely that PMA's inhibitory action occurs at the transcriptional or translational level. PMID- 3861772 TI - Factors affecting geriatric dental care in Nebraska. PMID- 3861771 TI - 13-Deoxycarminomycin, a new biosynthetic anthracycline. AB - A new antitumor antibiotic, 13-deoxycarminomycin, has been isolated from the anthracycline complex produced by Streptomyces peucetius var. carminatus (ATCC 31502), a biochemical mutant of Streptomyces peucetius var. caesius, the doxorubicin-producing microorganism. The new anthracycline, showing antibacterial and cytotoxic activity in vitro, was found active against P-388 murine leukemia. PMID- 3861773 TI - Tourette syndrome and HLA. AB - Five kindreds with multiple individuals manifesting Tourette syndrome (TS) or related abnormal movements were evaluated for linkage between TS and HLA-A, B, C and DR antigens. Families were selected to have a constellation of affected individuals which gave the appearance of transmission of a major susceptibility gene. All kindreds had at least two clearly affected first or second degree relatives. Although developmental neurobehavioral disorders are candidates for showing a relationship to specific tissue antigens, we found no evidence for a close linkage between a gene locus determining susceptibility to TS and the HLA loci. PMID- 3861774 TI - Therapy of CNS leukemia with intraventricular chemotherapy and low-dose neuraxis radiotherapy. AB - Successful treatment of CNS leukemic relapse has been frustrated by frequent local recurrence and eventual marrow relapse. We describe the treatment of meningeal leukemia in 39 children with intrathecal remission induction followed by the placement of an Ommaya reservoir to facilitate the administration and distribution of chemotherapeutic agents into the CSF. Six hundred or 900 rad of craniospinal radiation and maintenance intraventricular and intrathecal chemotherapy was then administered. Systemic reinduction therapy was added in the later cases. Sixteen children (41%) experienced no further events, with 17+ months to 13+ years (median, 25 months) follow-up . Eleven patients (28%) had CNS recurrence, nine (23%) bone marrow (BM) relapse, and two (5%) testicular relapse as the next adverse event. The course of patients with first isolated CNS relapse differed from that of the others. Eleven (69%) of 16 patients treated for first isolated CNS relapse are alive and 9 are event free, while only 35% of patients whose CNS relapse occurred simultaneously or after recurrent disease at other sites are alive (P = .04). Seven of 23 in the later group are event free. The difference is due to the increased incidence of BM relapse in the later group (30% v 6%; P = .04). For patients with first isolated CNS relapse, the life-table median CNS remission duration is 42 months. The projected CNS relapse-free survival and event-free survival 8 to 10 years after CNS relapse are 40% and 32%, respectively. Headache, nausea, and emesis of short duration were frequent during therapy. In three patients, the reservoir had to be removed for infection. No patient suffered neurologic deficit related to the reservoir. The therapy described can reduce the CNS relapse rate with manageable toxicity. Systemic relapse is still a major problem after multiple CNS relapse and in those in whom the CNS relapse follows or is simultaneous with relapse at other sites. PMID- 3861775 TI - Detection of pulmonary metastases in patients with osteogenic and soft-tissue sarcomas: the superiority of CT scans compared with conventional linear tomograms using dynamic analysis. AB - A prospective serial evaluation in 19 patients with soft-tissue and osteogenic sarcomas was performed to determine whether computerized tomography (CT) or conventional linear tomography (LT) detected pulmonary metastases earlier. Analysis of the metastatic nodules was performed radiographically with histologic confirmation by obtaining serial CTs and LTs followed by metastasectomy. Nodules were classified as stable, growing, or developing and by detection on CT and/or LT. CT was the first positive study in a significantly greater number of patients (13 CT, 1 LT; P less than .005), and CT detected the nodules earlier than LT (56 CT first v 7 LT first; P less than .0001). Ninety of 166 nodules resected were detected by CT, LT, or both (54%). The median size of metastatic nodules documented at surgical exploration and first detected by CT was significantly smaller than that first detected by LT (7.6 mm for CT v 13.2 mm for LT; P less than .05). Of 55 histologically documented metastases detected initially either by CT or LT, CT was markedly superior to LT with 50 (91%) first detected only by CT (P less than .001). These data reveal that CT detects more pulmonary metastases earlier than LT and that developing or growing nodules in patients with sarcomas are usually metastases. Decisions regarding metastasis resection in sarcoma patients, therefore, should be based primarily on CT findings. PMID- 3861776 TI - Acute leukemia following testicular carcinoma. PMID- 3861777 TI - The in-house technician. PMID- 3861778 TI - Why general dentists refer patients to periodontists. PMID- 3861779 TI - Living in retirement. PMID- 3861780 TI - The dental hygienist. Insights into career satisfaction. PMID- 3861781 TI - Time management. PMID- 3861782 TI - Stay incorporated. Here's why. PMID- 3861784 TI - What investments offer the best return and the highest degree of safety for retirement plans? PMID- 3861783 TI - Using computers to enhance dental practice. PMID- 3861785 TI - The alphabet soup. More on the debate. PMID- 3861786 TI - The diagnosis of ulcerative vesicular and bullous lesions. PMID- 3861787 TI - Dentofacial disharmonies. PMID- 3861788 TI - Modified Maryland splint for mobile mandibular incisors. PMID- 3861789 TI - The impaired dentists program. PMID- 3861790 TI - Dental professional liability rates skyrocket. NJDA searches for solutions. PMID- 3861791 TI - Combined-modality treatment of osteogenic sarcoma of the skull. AB - The authors present the results of combined-modality treatment in eight patients with osteosarcoma of the skull. Six patients had de novo tumors, and two others had secondary sarcomas resulting from malignant transformation in Paget's disease. Wide surgical excision and combination chemotherapy were used in seven patients, and surgery and radiation therapy were employed in one case. Following chemotherapy, six patients underwent additional surgery. This aggressive approach resulted in four long-term survivors among the patients with de novo tumors. These data suggest that surgery in combination with chemotherapy provides the best potential for long-term disease control in patients with osteosarcoma of the skull. PMID- 3861792 TI - ACNU-resistant mutants of 9L rat glioma cell line. Isolation and preliminary characterization of these subclones. AB - Three ACNU-resistant subclones were isolated and characterized from a wild-typed 9L rat glioma cell line in culture. At an early stage after cloning, these ACNU resistant subclones showed a high frequency of chromosomal aberrations compared with nonresistant 9L cells. These ACNU-resistant subclones revealed a cross resistance to BCNU, CCNU, methyl CCNU, nitrogen mustard, cyclophosphamide, and cis-platinum, which are alkylating agents. Further studies are necessary to clarify the mechanisms of ACNU-resistance from the aspect of repair of DNA alkylation damage. PMID- 3861793 TI - Pharmacokinetics of an indium-111-labeled monoclonal antibody in cancer patients. AB - We have evaluated the pharmacokinetics in patients of a monoclonal antibody (19 9) F(ab')2 fragment coupled with DTPA and labeled with 111In. In addition to imaging and organ uptake determinations, serum and urine samples were analyzed to help determine the in vivo behavior of the label. Using a competitive binding assay, the immunoreactivity of the coupled fragment was found to be indistinguishable from that of the unmodified fragment. The absence of radiocolloids in the injectate was confirmed as was the in vivo stability of the attached DTPA groups. By a variety of techniques, we show that the only significant source of label instability was transcomplexation to circulating transferrin. About 9% per day of label exposed to transferrin (about 1-2% of the injected dose) dissociated with slight bone marrow accumulation. Following i.v. administration, serum activity levels fell rapidly (T 1/2 alpha 2 hr, T 1/2 beta 19 hr). Whole-body clearance of the label was slow (T 1/2 160 hr) and may be attributed entirely to urinary excretion (0.26% of the injected dose per hour). Organ accumulation was greatest in the liver and persisted after rapidly attaining high values (20% of the injected dose). A total of 14 cancer patients were studied, nine with identifiable sites of metastatic disease from colorectal [8], pancreatic [2], ovarian [3], or small cell lung [1] primaries. Eight of the 12 sites of documented tumor were visualized by external imaging (67%) most distinctly at 48-72 hr postadministration. PMID- 3861794 TI - The characteristics of blood-borne radiolabels and the effect of anti-mouse IgG antibodies on localization of radiolabeled monoclonal antibody in cancer patients. AB - Quantitative and qualitative aspects of the blood survival of 131I and 111In labeled monoclonal antibody 791T/36 have been examined in patients with colo rectal carcinoma, ovarian carcinoma and osteogenic sarcoma who were receiving labeled antibody in diagnostic immunoscintigraphy trials. The blood clearance of intact antibody radiolabeled with either 131I or 111In was similar. A bi-phasic decline of both radiolabeled preparations was measured with initial half-lives 0.62 and 0.42 days for 131I and 111In labels and then with 1.85 and 1.40 day half lives, respectively. The Fab fragment of the antibody was lost more rapidly (initial half-life 0.20 days and then 0.78 days). Blood-borne radioactivity was associated predominantly with plasma rather than cellular elements. Radioactivity was still attached to undegraded, uncomplexed, and immunologically active antibody as demonstrated by molecular filtration, immune precipitation, and antigen binding assays. However, anti-mouse-IgG antibody detected within 7 days of administration of radiolabeled antibody was present for at least 10 mo and has implications for the efficiency of repeated image studies. PMID- 3861795 TI - A descriptive analysis of the status of maternal and infant health care in New York State. PMID- 3861796 TI - Critical issues in nursing education. PMID- 3861797 TI - Keynote address: overview of critical issues in nursing education. PMID- 3861798 TI - Critical issues in nursing education. Response. PMID- 3861799 TI - Critical issues in higher education: an administrative perspective. PMID- 3861800 TI - Critical issues in nursing education: the clinical laboratory. PMID- 3861801 TI - Major issues in postsecondary education in New York State. PMID- 3861802 TI - Recording nursing's past: the oral history project of the New York State Nurses Association. PMID- 3861803 TI - Malignant biopsies from the University of Oklahoma Oral Pathology Laboratory. PMID- 3861804 TI - An approach to evaluating dental office computer requirements. PMID- 3861805 TI - Oral pathology unknown. Histoplasmosis. PMID- 3861807 TI - ABC's periodontics. "L" is for lichen planus and leukoplakia. PMID- 3861806 TI - The four most common alterations of the teeth, periodontium and oral soft tissues observed in smokeless tobacco users: a literature review. PMID- 3861808 TI - Congenital malformation: dental features of acardia--case report. PMID- 3861809 TI - Prenatal ulceration of the tongue seen in association with a natal tooth. PMID- 3861810 TI - Median rhomboid glossitis in an infant. Report of a case. PMID- 3861811 TI - Conservative management of a fractured mandible in a ten month old child. PMID- 3861812 TI - Congenital duplication of mandibular rami in Klippel-Feil syndrome. PMID- 3861813 TI - Oral status of "controlled" adolescent type I diabetics. PMID- 3861814 TI - Alveolar soft-part sarcoma of the oral cavity. Report of a case. PMID- 3861815 TI - Traumatic neuroma occurring at a site of intraosseous wiring 15 years after the operation. PMID- 3861816 TI - Oral cavernous hemangioma with atypical presentation. PMID- 3861817 TI - Oral lichen sclerosus et atrophicus: (report of a case). PMID- 3861818 TI - A dentist's approach to difficult patients. PMID- 3861819 TI - Minocycline induced pigmentation of the oral cavity. PMID- 3861821 TI - Mini-residencies--pro and con. PMID- 3861820 TI - Clinical notes in therapeutics: psychotropic drugs for the management of chronic pain. PMID- 3861822 TI - A pin-in-groove technique for reduction of displaced subcondylar fractures of the mandible. PMID- 3861823 TI - Odontogenic fibroma of the complex (WHO) type: report of six cases. AB - Six cases of the complex (World Health Organization) type of odontogenic fibroma are described. The relationships of these lesions to the simple type of odontogenic fibroma, desmoplastic fibroma, and to certain reactive lesions are discussed. PMID- 3861824 TI - Use of prophylactic antibiotics in temporomandibular joint surgery. AB - Retrospective and prospective studies were conducted on the incidence of infection in a population of 230 patients undergoing temporomandibular joint surgery. In the retrospective study, 136 patients were treated with cephalosporin antibiotics before, during, and after surgery. In the prospective study, 94 patients were treated without antibiotic coverage. The number of infections in the two groups was not significantly different. PMID- 3861825 TI - Adenomatoid odontogenic tumor in a black African population: report of thirteen cases. AB - The records of the Cancer Registry of University College Hospital in Ibadan, Nigeria, were reviewed for the incidence of adenomatoid odontogenic tumor from 1961-1982. Thirteen cases of the tumor were found. Clinical, histologic, and radiologic features of the 13 cases are reported. Many features were similar to previous reports of this tumor, but an increased ratio of males to females and preference for the mandible was observed. It is suggested that these factors may be peculiar to Nigerians. A few cases showed an unusual posterior location of tumor. PMID- 3861826 TI - Tumors of the salivary glands: clinical analysis of 68 cases. AB - Sixty-eight cases of tumors of the salivary glands treated at one institution over a six-year period were classified according to the World Health Organization criteria (Thackray AC, Sobin LH: Histological Typing of Salivary Gland Tumours. WHO, Geneva, 1972). Parotid, submandibular, and minor tumors were classified as epithelial, nonepithelial, or unclassified tumors or as allied conditions. Symptoms, demographic features, and management of the tumors are discussed. PMID- 3861827 TI - Clear cell ameloblastoma--an odontogenic carcinoma. AB - Two cases of aggressive intraosseous epithelial tumor of the jaws are presented. Both tumors demonstrated an unusual biphasic pattern with areas of acceptable follicular ameloblastoma together with a conspicuous clear-cell component. The clinical course indicates these lesions should be considered as low grade odontogenic carcinomas. Further subclassification according to the World Health Organization classification and the recently proposed modification by Elzay is discussed. PMID- 3861828 TI - Desmoplastic fibroma of the maxilla. AB - A case of desmoplastic fibroma of the right maxilla is reported. The lesion presented as a painless mass in the right posterior alveolar ridge of a 22-year old white man. Histologically, the lesion was composed of interlacing fascicles of benign-appearing fibroblasts in a varying ground substance of collagenous and myxoid tissue. The lesion was not encapsulated histologically and was invading between bone trabeculae resulting in resorption of the bone. A review of the literature reveals that a total of 30 cases of desmoplastic fibroma of the jaws have been reported. All of the mandibular lesions except two were reported to have occurred in the left side, with the molar-ramus region favored. The case reported here is, to the best of our knowledge, the first reported case of desmoplastic fibroma occurring in the maxillary alveolar process. PMID- 3861829 TI - Case 56: intraosseous tumor of the maxilla. PMID- 3861830 TI - The lingual application of a reconstruction plate: a new method in bridging lower jaw defects. PMID- 3861831 TI - A destructive lesion of the anterior maxilla. PMID- 3861832 TI - Case report: a possible variant of otodental syndrome. PMID- 3861833 TI - Dental health of children with cystic fibrosis: an interim report. PMID- 3861834 TI - Symptoms of TMJ dysfunction: indicators of growth patterns? PMID- 3861835 TI - Radiographic considerations in pedodontics. PMID- 3861836 TI - Effectiveness of posterior crossbite correction during the mixed dentition. PMID- 3861837 TI - Determining the caries at-risk child: Part III. The relationship between morphology of maxillary dentition and occurrences of focal demineralization lesions and caries. PMID- 3861838 TI - Double teeth: the incidence of gemination and fusion. PMID- 3861839 TI - Traumatic impaction of a maxillary primary incisor into the nasal cavity. PMID- 3861840 TI - Repair of root fractures. PMID- 3861841 TI - The peripheral giant cell granuloma. PMID- 3861842 TI - Pocket formation 3 years after comprehensive periodontal therapy. A retrospective study. AB - The records of 50 adult patients were studied to determine the incidence of pocket formation 3 years following periodontal therapy. These patients were treated at the Post-graduate Periodontal Clinic of Tufts University School of Dental Medicine and were subsequently placed on a 3-month maintenance schedule. A total of 1080 teeth with probing depths of 3 mm or less at the end of active therapy were examined. Before treatment 305 teeth (28.2%) had probing depths of 1 to 3 mm, 480 (44.4%) had depths of 4 to 5 mm and 295 (27.4%) had depths of 6 mm or more. Three years after active treatment 944 teeth (87.4%) had probing depths of 1 to 3 mm, 110 (10.2%) had 4 to 5 mm depths and 26 (2.4%) had depths of 6 mm or more. Pockets developed more frequently in maxillary than mandibular teeth, in molars more than in any other tooth type and in those teeth which before treatment had pockets of 6 mm or more. Pockets were less likely to develop in patients with good plaque control and in patients below the age of 40. PMID- 3861843 TI - Lactic acid production by oral Streptococcus mitis inhibits the growth of oral Capnocytophaga. AB - Various relationships including inhibition or stimulation of growth have been demonstrated among the bacteria present in dental plaque, both in vitro and in vivo. A large number of these relationships involved oral Streptococci. An earlier study found that strains of Streptococcus mitis inhibited the growth of potential periodontopathic microorganisms, such as Actinobacillus actinomycetemcomitans, Capnocytophaga and species of Bacteroides and Fusobacterium. The present investigation showed that this inhibitory effect resulted primarily from lactic acid production. PMID- 3861844 TI - Gingival and bacterial plaque response to instrumentation, oral hygiene instruction and nutritional therapy. AB - Thirty-three male subjects participated in a study to examine the effect of supplements of multiple vitamins and minerals, local therapy (periodontal instrumentation and oral hygiene instruction) and a combination of both on gingival inflammation and bacterial plaque formation. Subjects were given either multivitamin and mineral supplements or placebos on a double-blind basis for 21 days. On Day 7, the mandibular incisors were instrumented, and each subject was instructed in brushing and flossing. Observations were taken at Days 0, 7 and 21. There was a significant (P = 0.004) effect from micronutrient supplementation at Day 7 on the gingival index but no significant effect on the plaque index. On Day 21 there was no statistical superiority noted for the supplemented group in respect to either the gingival or plaque index, although the gingival index approached significance (P = 0.062). PMID- 3861845 TI - The Goldfarb Fear of Fat Scale. AB - These two studies introduce the Goldfarb Fear of Fat Scale (GFFS) as an assessment device for use with bulimic clients. Study I presents norms and reliability data for a high school sample, as well as pilot comparisons between anorexic and normal women. Study II demonstrates that the GFFS significantly differentiates between bulimics, repeat dieters, and non-dieting women. These results suggest that the GFFS may be utilized clinically as a diagnostic tool and indicator of change, which may assist in the early identification of bulimic individuals. PMID- 3861846 TI - Improvement of bioavailability of poorly absorbed drugs. II. Effect of medium chain glyceride base on the intestinal absorption of cefmetazole sodium in rats and dogs. AB - The effect of medium chain glyceride (MCG) on the intestinal absorption of cefmetazole sodium (CMZ) was investigated in rats and dogs. In rats, MCG containing glyceryl mono-, di- and tri-caprylate enhanced the intestinal absorption of CMZ after intraduodenal administration, though the promoting effect of MCG was less than that after rectal administration. The promoting effect of MCG was found to be mainly due to glycerylmonocaprylate and dependent on the dosage of MCG. The plasma CMZ levels after intraduodenal administration as MCG solution tended to be slightly higher than those observed after administration as MCG emulsion, though the differences were found to be statistically insignificant. Moreover, the intestinal absorption of CMZ after intraduodenal administration as MCG emulsion was decreased significantly by increasing the amount of water in the emulsion. The promoting effect of MCG in dogs was more clearly demonstrated in the lower intestine than in the upper intestine. Furthermore, the oral bioavailability of pharmaceutical formulations of CMZ was also investigated in dogs. When enteric coated capsules filled with MCG solution were administered to dogs, the bioavailability of CMZ was enhanced significantly. PMID- 3861847 TI - [The connective-osteo-periosteal flap or COP flap]. PMID- 3861848 TI - [Clinical study of the effectiveness of chlorhexidine gel on bacterial plaque accumulation]. PMID- 3861849 TI - [High risk patients: identification and evaluation]. PMID- 3861850 TI - [Histological study of dental and periodontal inclusions in a dermoid cyst of the ovary]. PMID- 3861851 TI - [Clinical study of bioresorbable ceramic (Synthograft) in the treatment of intrabony lesions. 1: Clinical developments over a year]. PMID- 3861852 TI - [The psychology of oral hygiene motivation]. PMID- 3861853 TI - [S.E.M. study of the in vitro effects of a prophylaxis device (Cavijet) on tissue surfaces and dental restorative materials]. PMID- 3861854 TI - [Changes occurring in the periodontal ligament and cementum in periapical infections]. PMID- 3861855 TI - [Treatment of periodontal lesions with induced tooth movement: apropos of a case]. PMID- 3861857 TI - A symposium on the Future of Dentistry Report: Implications for the public sector. PMID- 3861856 TI - Hypoxia releases a vasoconstrictor substance from the canine vascular endothelium. AB - Experiments were designed to determine the role of the endothelium in the facilitation by anoxia of contractile responses of isolated coronary arteries. Rings and strips of canine coronary arteries, with or without endothelium, were suspended for isometric tension recording in modified Krebs-Ringer bicarbonate solution. To determine the release of a vasoactive substance(s) from the endothelial cells, strips without endothelium were layered with strips containing endothelium. In rings and in layered preparations with endothelium, anoxia (95% N2-5% CO2) augmented contractile responses to prostaglandin F2 alpha. Hypoxia (10 or 5% O2) caused contractions in the presence of indomethacin. Removal of the endothelium abolished the anoxic facilitation, and the hypoxic contractions. Inhibitors of cyclo-oxygenase, lipoxygenase or phospholipase A2 or of adrenergic, serotonergic and histaminergic receptors did not prevent the response to anoxia. Likewise, inhibitors of the endothelium-derived factor(s) (quinacrine, phenidone and methylene blue) did not affect the anoxic facilitation. Hypoxia and anoxia caused contraction of coronary arteries without endothelium when layered with femoral arteries and veins with endothelium. Anoxic facilitation was observed in femoral arteries, but not in femoral veins, with endothelium. These experiments indicate that hypoxia and anoxia cause the release of a diffusible vasoconstrictor substance(s) from endothelial cells. The sensitivity of smooth muscle of different anatomical origin to the facilitatory mediator(s) varies. PMID- 3861858 TI - Dentistry's blueprint for the future. AB - This report deals with a three-year study by the American Dental Association pertaining to the Future of Dentistry. The report covers environment of dentistry, dental research, dental manpower, public and professional concerns, dental education, and dental practice. It concludes with the following recommendations: Convert public unmet need into demand for dental services. Prepare practitioners (existing and future) to be more patient/market oriented. Broaden practitioner's clinical skills and mix of services offered to the public. Influence the quality and quantity of the manpower supply. Stimulate research and development. Improve the profession's ability to favorably influence public policy. PMID- 3861859 TI - Impact on dental hygiene. AB - This paper reviews the six recommendations as approved by the House of Delegates of the American Dental Association in 1983. Each recommendation is reviewed in relation to public health and preventive dentistry as well as the established goal of dental hygiene: "To improve the public's total health by increasing the awareness of and access to quality oral health care and to position the dental hygienist as the preventive oral health professional." To reach this goal it is recommended that dental hygienists seek out opportunities in the public sector where there is more job satisfaction, their professional roles have higher acceptance with both coworkers and patients, and there is a high level of interaction with other health-care professionals. PMID- 3861860 TI - Does dentistry as we know it have a future? AB - The American Dental Association's Strategic Plan for the Future of Dentistry is primarily a self-serving document in that it attempts to protect the dentist regardless of the changing oral health needs of the population. Marketing, even if initially successful, will not increase the absolute demand for dental services, because persons on maintenance care require less care per year than sporadic users. Higher use will be balanced by less need. Excess supply creates incentive to overtreat. Today's dentist, as the dominant provider, does not have major motivation toward prevention, either by training or economic self-interest. The paper proposes that a modified hygienist, with more diagnostic training, should become the primary dental provider, with a better trained dentist as a secondary provider, combining problem solving and "surgical" skills. These changes would function best under a system combining group practice with a national health service. PMID- 3861861 TI - The new antifluoridationists: who are they and how do they operate? AB - Since Grand Rapids became the first community to adjust the fluoride content of its water supply, individuals and groups have objected to water fluoridation. Early opponents of fluoridation were often members of fringe groups or were associated with the health food movement, were chiropractors, or were Christian Scientists. Once these individuals and groups began exchanging ideas and experiences, national groups were formed for the sole purpose of fighting fluoridation. While most of these organizations lacked sufficient funding or expertise to have much impact outside of the communities where they were based, some national multi-issue organizations appeared that were well funded and that focused on antifluoridation as one of their goals. Through exploitation of society's current phobias about health and disease, these national groups have become increasingly successful in negatively influencing the public about the effectiveness, safety, and economy of community water fluoridation. Their tactics range from community actions aimed at local governmental bodies, to well organized local referenda, to litigation in state and federal courts, to lobbying state legislatures and the US Congress. Specific legal, community organizational, and political tactics employed by the antifluoride groups are reviewed and classified. PMID- 3861862 TI - A symposium on the new fight for fluorides. PMID- 3861863 TI - The opposition to fluoride programs: report of a survey. AB - State dental directors were surveyed in spring 1984 regarding fluoridation and fluoride programs. Forty-four states reported existing fluoride mouth-rinse programs in schools; 22, fluoride tablets in schools. About 90 percent of directors felt that support for fluoride programs by state departments of health and constituent dental societies either had remained the same or increased over the previous five years. Approximately half felt the antifluoridation movement to be as strong as five years earlier. About one-third indicated a shift in focus by water fluoridation opponents to include other fluoride systems. Most felt this shift occurred during 1981-82. Information was reported on 255 individual challenges to fluoride programs. Results of this survey indicate that expenditure of considerable resources and effort continues to be necessary to ensure the longevity of public fluoride systems. PMID- 3861864 TI - Priorities to preserve fluoride uses: rationales and strategies. AB - Well-planned, new initiatives are required to preserve fluoride uses, especially water fluoridation. Discussed are barriers to fluoride promotion, evidence about public and health-care providers' knowledge and opinions about fluoride use and decision making, implications of sources of public information on fluorides, consequences to professionals and the public of being misinformed about fluorides, and four general strategies for promoting fluorides under varying conditions. Educational and political initiatives must be appropriate to state needs and conditions. Four broad categories of actions include: diagnosis and planning for education/promotion; public and professional education under both noncontroversial and controversial conditions, political persuasion where required, and changing the context of fluoridation decision making to prevent public referenda on public health measures. PMID- 3861865 TI - Public health officials' perceptions of dental caries preventive methods. AB - The Wisconsin Division of Health has traditionally promoted the implementation of cost-effective dental public health caries prevention programs through the cooperation of communities, schools, and local health agencies. Because of the opportunities created by the division's goal to enhance the capabilities of local public health agencies and the difficult program-priority decisions produced by diminishing federal funding, an evaluation of the state's dental public health promotional efforts appeared appropriate. In 1982, as part of this evaluation process, an opinion survey of dental caries prevention methods was distributed to local public health officials. The survey instrument consisted of seven questions that ranked caries-prevention measures. The questionnaire return rate was 85 percent, or 104 responses. Data were arrayed by frequency of rank, composite-rank score, and overall rank. The Kolmogorov-Smirnov test was used to determine the significance of composite-score data. The results of the survey indicated that 1) local public health officials perceive consumer-passive and school-based caries preventive methods as the most effective and cost-beneficial means of preventing tooth decay in school-age children, 2) this knowledge could permit them to act as informed dental public health advocates, and 3) this knowledge may account for the implementation and maintenance of cost-effective public health caries prevention programs throughout Wisconsin. PMID- 3861866 TI - Applying an evaluation model to a dental public health program. AB - The applicability of an evaluation model applied to an urban dental public health program was assessed. The model required the specification of objectives and focuses on the accomplishment of these objectives and the associated costs. This model is primarily a goal model as contrasted with a system model; thus, the focus was on goal accomplishment. The model was simple to use and provided detailed evaluation information for use by administrators. PMID- 3861867 TI - Failure to detect specific binding sites for prostaglandin F-2 alpha in membrane preparations from rat endometrium. AB - Membrane preparations from endometria of rats in different physiological states (e.g. pseudopregnancy, ovariectomized animals receiving progesterone + oestradiol or oestradiol alone) were studied for [3H]PGF-2 alpha binding by methods which detected PGF-2 alpha binding in ovary preparations and PGE binding in the same endometrial preparations. There was no evidence of high-affinity binding sites for [3H]PGF-2 alpha. Saturable [3H]PGF-2 alpha binding that increased with the onset of uterine sensitivity was detected but this binding does not fulfil all the criteria required for a PGF-2 alpha receptor and is probably due to binding to PG metabolizing enzymes in our preparations, or to binding of [3H]PGF-2 alpha to PGE binding sites. The failure to detect specific PGF-2 alpha binding sites seems to reflect a true absence of these sites in the rat endometrium. PMID- 3861868 TI - Suppression of prostaglandin F-2 alpha release and delay of luteolysis after active immunization against oxytocin in the goat. AB - Active immunization against oxytocin significantly prolonged the oestrous cycle in 3 out of 4 goats; the mean (+/- s.e.m.) cycle length was 29.1 +/- 1.7 days (n = 12) compared to 19.4 +/- 0.6 days (n = 9) in control animals. During Days 10-21 of the cycle in the 3 responsive goats, peripheral plasma concentrations of progesterone and oxytocin were steady and those of 13,14-dihydro-15-keto prostaglandin F-2 alpha were very low (50-100 pg X ml-1) with no marked pulsatile activity. The major effect of immunization would appear to be suppression of the synthesis of the uterine luteolysin PGF-2 alpha, thus confirming that endogenous oxytocin has a facilitatory role in luteolysis via prostaglandin production. PMID- 3861869 TI - Do small and large luteal cells of the sheep interact in the production of progesterone? AB - Corpora lutea from cyclic ewes were dissociated by collagenase and trypsin/EGTA treatments, and enriched fractions of small and large luteal cells were prepared on gradients of Ficoll. These fractions were incubated separately or remixed before incubation. Colchicine, cytochalasin B and the calcium channel-blocker verapamil significantly reduced progesterone production by both small and large luteal cell fractions, while isoprenaline stimulated an increase in progesterone production by large luteal cell fractions only. When fractions of small and large luteal cells were remixed, no more and no less progesterone was produced than would have been predicted from equivalent fractions incubated separately. There was therefore no evidence of synergism between small and large luteal cells in the production of progesterone. Prostaglandin F-2 alpha, which can inhibit LH stimulated progesterone production by ovine luteal tissue in vitro, had no effect on LH-stimulated progesterone production by small luteal cell fractions, but significantly inhibited that by enriched fractions of large luteal cells. Since large luteal cell fractions were contaminated with small luteal cells, which are probably responsible for the progesterone-secretory response of these fractions to LH, it was concluded that the inhibition of LH-stimulated progesterone production by small luteal cells is dependent on the presence of large luteal cells. Oxytocin added to large and small luteal cell fractions did not affect progesterone production by either fraction. It was therefore concluded that the inhibitory action of PGF-2 alpha on LH-stimulated progesterone production may require the interaction of large and small luteal cells, but that oxytocin is not likely to be an intermediary in this interaction. PMID- 3861870 TI - 8-Substituted guanosine and 2'-deoxyguanosine derivatives as potential inducers of the differentiation of Friend erythroleukemia cells. AB - A variety of 8-substituted guanosine and 2'-deoxyguanosine derivatives were synthesized and tested as inducers of the differentiation of Friend murine erythroleukemia cells in culture. The most active agents in the guanosine series were 8-substituted-N(CH3)2, -NHCH3, -NH2, -OH, and -SO2CH3, which caused 68, 42, 34, 33, and 30% of erythroleukemia cells to attain benzidine positivity, a functional measure of maturation, at concentrations of 5, 1, 0.4, 5, and 5 mM, respectively. The 8-OH derivative of the 2'-deoxyguanosine series produced comparable activity, causing 62% benzidine-positive cells at a level of 0.2 mM. These findings indicate that 8-substituted analogues of guanosine and 2' deoxyguanosine have the potential to terminate leukemia cell proliferation through conversion to end-stage differentiated cells. PMID- 3861871 TI - An analysis of recent dental school graduates' perceptions of a practice management curriculum: the University of Michigan School of Dentistry. PMID- 3861872 TI - Automating the dental practice. PMID- 3861873 TI - Antepartum diagnosis: biopsy and culture of first trimester chorionic villi. PMID- 3861874 TI - Henoch-Schonlein purpura in pregnancy. PMID- 3861875 TI - Adenovirus 5 early region 1A host range mutants hr3, hr4, and hr5 contain point mutations which generate single amino acid substitutions. AB - The early region 1A (E1A) gene of adenovirus 5 encodes two proteins, 289AA and 243AA, which are translated from mRNAs of 13S and 12S, respectively. These two E1A proteins are identical except for an internal stretch of 46 amino acids unique to the larger protein. The 289AA protein activates transcription from promoters of other early adenoviral genes. The adenovirus type 5 host range mutants hr3, hr4, and hr5 are unable to activate transcription of these early viral genes. We show here that hr3, hr4, and hr5 each contain a distinct missense mutation in the E1A gene. We first localized the mutations in a series of constructed wild-type-hr hybrid E1A genes by using a biological assay which can discriminate between functional and nonfunctional E1A proteins. We then identified the mutations by DNA sequencing. In hr3 lysine replaced methionine at position 176, and in hr4 phenylalanine replaced leucine at position 173; both substitutions occurred in the region unique to the 289AA protein. In hr5, due to the splicing patterns of the two mRNAs, asparagine replaced serine as the last amino acid in the unique region of the 289AA protein at position 185, while aspartic acid replaced glycine at position 139 in the 243AA protein, which is the last amino acid common to both proteins before the unique region. These results substantiate the role of the 289AA protein in transcriptional activation and underscore the importance of the unique region as the basis of the functional difference between the two E1A proteins. Implications as to how these mutations affect the structure and function of the E1A proteins in transcriptional activation and transformation are discussed. PMID- 3861877 TI - Consensus Conference. Limb-sparing treatment of adult soft-tissue sarcomas and osteosarcomas. PMID- 3861876 TI - Interferon prevents the generation of spontaneous deletions at the left terminus of vaccinia virus DNA. AB - In this report we have shown that Friend erythroleukemia cells persistently infected with vaccinia virus maintain the persistent infection even after 1 year of continuous interferon (IFN) treatment. The persistently infected cultures were responsive to IFN as determined by their ability to induce 2-5A synthetase, to increase the intracellular levels of 2-5A, and to cause rRNA cleavage. While large deletions at the left terminus of vaccinia DNA occurred readily in the virus population from untreated cells, IFN completely suppressed the generation of these spontaneous deletions. Removal of IFN from these cultures led to the appearance of similar deletions at the left terminus of the viral genome. The regions deleted contain more than half of the left-end inverted terminal repetition of the vaccinia genome. These findings show that IFN alters specific events associated with the generation of vaccinia DNA deletions. PMID- 3861878 TI - Limb salvage surgery for sarcomas: a good idea receives formal blessing. PMID- 3861879 TI - [JIS draft proposal for lung ventilators for medical use]. PMID- 3861880 TI - Cephem antibiotics and alcohol metabolism. AB - Mechanisms of the disulfiram-like reaction of cephem antibiotics were studied. Changes in ethanol (EtOH) and acetaldehyde (AcH) levels in the blood with EtOH loading following daily intravenous administration of cephem antibiotics were determined in rats and the following were found: The daily intravenous injection of cefazolin, cefotiam (CTM), cefsulodin, cefoxitin or ceftizoxime in no way varied the changes in the EtOH and AcH levels in the blood with EtOH loading. The daily intravenous injection of cefmetazole, cefoperazone, cefamandole, latamoxef, cefmenoxime or cefotetan caused the AcH level in the blood to be elevated significantly until at least 8 hours after the EtOH loading, but was inert on the EtOH level on the blood. The daily administration of 1-methyl-2-tetrazoline-5 thione (TZ), a compound having a partial structure similar to those of the cephem antibiotics elevating the AcH level in the blood on EtOH loading, was inert on the EtOH level in the blood but elevated the AcH level in the blood. The daily administration of 1-(2-dimethylaminoethyl)-2-tetrazoline-5-thione (MTZ), a compound having a partial structure similar to that of CTM, was inert either on the EtOH or AcH level in the blood. The cephem antibiotics elevating the AcH level in the blood all had a (1-methyl-1H-tetrazol-5-yl) thiomethyl group in the 3 position of the aminocephalosporanic acid nucleus. It was though that the disulfiram-like reaction caused by the cephem antibiotics was derived from the elevation of AcH level in the blood.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3861881 TI - [Evaluation of ceftizoxime in the treatment of respiratory tract infections]. AB - Ceftizoxime (CZX) was used for 33 patients with respiratory tract infections; 22 patients with pneumonia, 3 patients with pulmonary abscess, 4 patients with diffuse panbronchiolitis and 4 patients with acute exacerbation of bronchiectasia. Clinical effects of CZX were evaluated in 33 patients; excellent in 16 and good in 14 patients. The efficacy rate was 91%. Bacteriological effects of CZX were prominent in 7 patients infected with S. pneumoniae, H. influenzae, K. pneumoniae and Citrobacter, but not in a patient infected with P. aeruginosa. The elimination rate was 92% (12/13). As the side effects, exanthema in 1 patient and gastrointestinal symptoms (nausea and vomiting) in 1 patient were observed. However, they improved without any treatment by cessation of CZX use. Abnormal laboratory findings were observed in 2 patients with elevated GOT and/or GPT. They normalized after cessation of drug. The usefulness of CZX was 82% (27/33). Therefore, CZX is a very useful drug and its effects are promising in clinical management of respiratory tract infections. PMID- 3861882 TI - [Comparison of new three tumor markers for pancreatic carcinoma: CA19/9, CA 125 and DuPan 2]. AB - Three new antigens reacting with monoclonal antibodies; CA 19/9, CA 125 and DuPan 2, were evaluated for their clinical significance in the diagnosis of pancreatic carcinoma. CA 19/9 is confirmed to be the best marker in its specificity (97%) and sensitivity (85%). Even in patients with small carcinoma, 5 of 6 T 1 cases showed positive CA 19/9 values. Transient elevations were noted in obstructive jaundice either with malignant tumors or benign but chronic inflammatory process. CA 125 is elevated in 85% of patients with pancreatic carcinoma. It is considered to be a marker indicating serosal, namely peritoneal or pleural, invasion not only in malignant but also in benign diseases. A sandwich solid phase radioimmunometric assay for DuPan 2 was established and elevated antigenic levels were detected in 80% of patients with advanced pancreatic carcinoma. PMID- 3861883 TI - [Diagnostic usefulness of serum levels of pancreatic oncofetal antigen (POA) and CA 19-9 in pancreatic cancers: monitoring of postoperative recurrences]. AB - Serum levels of POA (EIA; less than 11.0 U/ml) and CA 19-9 (RIA; less than or equal to 37 U/ml) were measured in 54 patients with pancreatic cancer and 19 patients with benign diseases of the pancreas. Although serum CA 19-9 and POA were elevated in 72.7% and 69.4% of patients with pancreatic cancer, respectively, patients in relatively early stage showed low percent of elevation. Therefore, these markers are unsuitable for early diagnosis of pancreatic cancers. However, these markers seem promising in differentiating preoperatively between pancreatic cancer and benign disease of the pancreas. These markers are also useful for monitoring the recurrence of pancreatic cancers. Of particular, patients with preoperatively high level seem good candidates for postoperative monitoring. PMID- 3861884 TI - [Clinical utility of tumor markers in gastric and colon cancer]. AB - Serum TPA and CEA level were measured in patients with gastric or colon cancer during the course of surgical treatment, and those clinical utility was evaluated. Both markers level were shown to be highest in colon cancer, followed by gastric cancer, benign diseases, and healthy subjects. Late stage patients, especially inoperable patients or patients in recurrence showed significantly high TPA and CEA level compared to early stage patients. Both markers were considered to be useful not only postoperative following up for recurrence but also preoperative evaluation for resectability and prognosis and postoperative evaluation for the treatment itself. PMID- 3861885 TI - [A report of five cases of multiple cancer with hematologic malignancies]. AB - Five patients with multiple cancers that included hematologic malignancies are described. The incidence of multiple cancers in hematologic malignancies has been 8.8% in the past two and a half years at our hospital. The combinations were: 1) primary bilateral breast cancers and acute monocytic leukemia; 2) breast cancer, malignant lymphoma and gastric cancer; 3) malignant lymphoma and gastric cancer; 4) malignant lymphoma and prostate cancer, and 5) colon cancer and multiple myeloma. Our experience suggests an increasing incidence of multiple cancer in hematologic malignancies. PMID- 3861886 TI - [The study on leukemic stem cell (L-CFU). I. Cytogenetic studies of the colonies obtained from leukemic patients]. PMID- 3861887 TI - [A pediatric case of chronic myelogenous leukemia of an adult type characterized by meningeal leukemia as a manifestation of blastic transformation followed by renal tubular acidosis]. PMID- 3861888 TI - [A case of chronic myeloid leukemia with elective splenectomy in the chronic phase and hepatic insufficiency due to leukemic cell infiltration in blast crisis]. PMID- 3861889 TI - [A trial administration of small doses of Ara-C as a second step in remission induction in patients with acute non-lymphocytic leukemia]. PMID- 3861890 TI - [A case of myeloproliferative disorder presenting as chronic neutrophilic leukemia with detection of Ph1 chromosome in long-term culture]. PMID- 3861891 TI - [Tumor formation in the spinal cord and genital organs in hematological remission in a patient with acute non-lymphocytic leukemia]. PMID- 3861892 TI - [Fusarium infection during the first remission induction therapy in a patient with acute lymphocytic leukemia]. PMID- 3861893 TI - [Structural changes of cell membrane and cell differentiation induction]. PMID- 3861894 TI - [A case of erythroleukemia with skin involvement]. PMID- 3861895 TI - [Effect of biliary tract obstruction and cholangitis on serum CA 19-9 levels]. PMID- 3861896 TI - Emerging impact of flow cytometry in predicting recurrence and survival in breast cancer patients. PMID- 3861897 TI - Changes in cellular lipid synthesis of normal and neoplastic cells during cytolysis induced by alkyl lysophospholipid analogues. AB - Susceptibility of eight different cell types of murine or human origins to alkyl lysophospholipid analogue (ALP)-induced cytolysis correlated well with a selective, dose-dependent inhibition of radiolabeled oleic acid incorporation into phosphatidylcholine (PC) and a concomitant stimulation of incorporation into neutral lipids (NL), mainly triacylglycerols. In resistant cells (murine macrophages, L929S, K562, and rMeth A) a counts per minute NL/counts per minute PC ratio of 0.8-1.0 was observed with 30 micrograms ALP/ml; in sensitive tumor targets (Meth A, HL60, YAC, and ABLS-8.1) values greater than 2.7 were found with 5-10 micrograms ALP/ml. Changes in lipid metabolism preceded cytolysis in Meth A fibrosarcoma cells. In degradation experiments the percentage of total lipid radioactivity in PC was reduced after 24 hours to 47% compared to that in controls in sensitive Meth A with 10 micrograms ALP/ml. The macrophage-PC was unaffected at the same concentration. Sensitivity to ALP was independent of cell proliferation. Resistance was not restricted to normal cells and was inducible in Meth A (and rMeth A). PMID- 3861898 TI - Tobacco smoking, coffee drinking, and occupation as risk factors for bladder cancer in Greece. AB - Patients with bladder cancer (250 males and 50 females), consecutively admitted during a 2-year period in the major cancer hospital of Athens, and an equal number of age- and gender-matched comparison patients with orthopedic conditions were interviewed regarding demographic, socioeconomic, and biomedical characteristics, including their occupations and their use of coffee and tobacco prior to the onset of their present disease or condition. Analyses of the data showed that cigarette smoking is an important, statistically significant and dose dependent risk factor for bladder cancer, particularly in males (tobacco smoking is rare among older Greek women); drinking 2 or more cups of Greek coffee per day appears to be a risk factor for bladder cancer, independent of tobacco smoking, although the association is neither strong nor dose dependent; and a priori specified "high-risk" occupations were associated with an increased rate ratio for bladder cancer among men less than 65 years and among women in general but not among older men. The overall results of this study indicate that the established risk factors for bladder cancer in the United States and in other developed countries are, apparently, equally important for bladder cancer in Greece, despite the differences in composition and conditions of use of Oriental tobacco and Greek coffee and in the activities and exposures to carcinogens in the Greek work place. PMID- 3861899 TI - Involuntary smoking and lung cancer: a case-control study. AB - In a case-control study in 4 hospitals from 1971 to 1981, 134 cases of lung cancer and 402 cases of colon-rectum cancer (the controls) were identified in nonsmoking women. All cases and controls were confirmed by histologic review of slides, and nonsmoking status and exposures were verified by interview. Odds ratios (OR) increased with increasing number of cigarettes smoked by the husband, particularly for cigarettes smoked at home. The OR for women whose husbands smoked 20 or more cigarettes at home was 2.11 (95% confidence limits: 1.13, 3.95). A logistic regression analysis showed a significant positive trend of increasing risk with increased exposure to the husband's smoking at home, controlled for age, hospital, socioeconomic class, and year of diagnosis. Comparison of women classified by number of hours exposed a day to smoke in the last 5 years and in the last 25 years showed no increase in risk of lung cancer. PMID- 3861900 TI - Development of virus-accelerated thymic lymphoma in AKR mice. AB - The progression of prelymphoma cells (PLC) in the bone marrow to lymphoma cells (LC) in the thymus in the presence of the lymphomagenic retrovirus SL3-3c was studied in a model system of virus-accelerated thymic lymphoma in AKR/J mice. On the average, a single LC appears in the thymus 30 days after the neonatal ip inoculation of SL3-3c virus; 50 days later, thymic lymphoma is clinically detectable. PLC in the bone marrow and oncogenic virus in the thymus are continuously present during this period before lymphoma develops. Biologically active oncogenic virus in the thymus increases as the animal nears the time of lymphoma development. Intrathymic inoculation, but not ip inoculation, of SL3-3c virus results in accelerated thymic lymphoma in 4- to 6-week-old AKR mice. PLC defined as a population of bone marrow-derived thymocyte progenitor cells susceptible to malignant transformation by oncogenic retrovirus after homing to thymus were further studied and characterized. PLC, like normal bone marrow thymocyte progenitors, were found to be radiosensitive and glucocorticoid resistant. Thymocytes of 21- to 28-day-old AKR mice, neonatally inoculated with SL3-3c virus, were studied for PLC. They could not be detected. It is concluded that lymphoma development is the final outcome of a series of events in which bone marrow-derived thymocyte progenitors are transformed after entering the thymus by virus in the thymic environment. PMID- 3861901 TI - Modulation of peroxidation in murine melanoma by dietary tyrosine-phenylalanine restriction, levodopa methylester chemotherapy, and sodium ascorbate supplementation. AB - Treatment with the drug combination of levodopa methylester and benserazide, supplemental ascorbate, and dietary deficiencies of tyrosine and phenylalanine more than doubled the median survival time of female (C57BL/6 X DBA/2)F1 mice bearing B16 melanoma tumors. The mechanism for this antitumor effect was not well defined. This study was designed to test the hypothesis that the antitumor activity of levodopa methylester and ascorbate against B16 melanoma is related to the generation of free radicals of oxygen, which peroxidize lipid constituents of cell membranes leading to cell death. As an indication of lipid peroxidation, the individual and combined effects of drug treatment and ascorbate supplementation on host and tumor malondialdehyde levels were examined in mice fed one of three test diets (commercial, purified, or deficient) containing decreasing amounts of tyrosine and phenylalanine. Malondialdehyde levels were increased in the livers of all untreated tumor-bearing mice, which suggests that the tumor alters host antioxidant defenses. Drug treatment and ascorbate supplementation alone and in combination increased hepatic malondialdehyde levels inversely to the amounts of tyrosine and phenylalanine in the diet, and the effects of drug and ascorbate on malondialdehyde levels were additive. Plasma levels remained unchanged by drug treatment, ascorbate supplementation, or tumors in mice fed the commercial or purified diets. Higher levels were observed only in tumor-bearing mice fed the deficient diet and given both drug treatment and ascorbate supplementation. Changes in tumor malondialdehyde levels generally correlated with the effects of the drug and ascorbate on survival time of mice bearing B16 melanoma. Tumors from mice fed the commercial diet accumulated little malondialdehyde, and therapy was relatively ineffective in this dietary group. In mice fed purified or deficient diets, drug treatment and ascorbate supplementation alone increased survival and tumor malondialdehyde levels, but the level of peroxidation in mice receiving the ascorbate supplementation was low compared to its greater antitumor effect on B16 melanoma. Although ascorbate enhanced the peroxidative activity of the drug on B16 melanoma tumors, the effects of the drug and ascorbate on malondialdehyde levels were not additive. Ascorbate enhanced survival of tumor-bearing mice that were fed the deficient diet and that were treated with drug, which indicated that ascorbate supplementation acted via other mechanisms.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3861902 TI - Estrogen effects on sister chromatid exchanges in mouse uterine cervical and kidney cells. AB - Uterine cervical fibroblasts and kidney cells from 3-to 4-day-old, previously untreated or phenobarbital [(PBA) CAS: 50-06-6]-treated female NMRI mice were cultured in vitro in the presence of diethylstilbestrol [(DES) CAS: 56-53-1] or 17 beta-estradiol [(E2) CAS: 50-28-2]. DES at 10(-7) M in the culture medium increased the number of sister chromatid exchanges (SCE); no further increases was obtained with higher concentrations of DES. Pretreatment of the females with PBA resulted in an increase in SCE when DES was used in the range of 10(-7) to 10(-5) M. The level of this increase was significantly higher than that in fibroblasts from untreated females. E2 had no effect. DES had no effect on SCE in kidney cells from PBA-treated females. Indomethacin and alpha-naphthoflavone reduced the number of SCE in PBA-exposed fibroblasts to an intermediate level. The presence of both enzyme inhibitors in the medium depressed the number of SCE to the control level. PMID- 3861903 TI - Induction of gliomas in Mongolian gerbils (Meriones unguiculatus) following neonatal administration of N-ethyl-N-nitrosourea. AB - Mongolian gerbils (Meriones unguiculatus) were given an sc injection (40 mg/kg body wt) of N-ethyl-N-nitrosourea [(ENU) CAS: 759-73-9] on postnatal day 1 (group I) or day 29 (group II). Untreated gerbils served as controls (group III). Of 32 gerbils in group I, 10 (31%) developed a total of 14 gliomas after an observation period of 12 months, whereas no gliomas were observed in groups II and III. Seven gliomas were located in the spinal cord, 6 were in the cerebrum, and 1 was in the cerebellum. Histologically, all were oligodendrogliomas. In group II, 1 meningeal tumor (4%) was observed among 27 gerbils. ENU also induced cutaneous melanomas (22% in group I, 15% in group II, and 0% in group III), kidney hemangiomas (6% in group I, 26% in group II, and 0% in group III), and ameloblastomas of the lower jaw (6% in group I and 0% in groups II and III). PMID- 3861904 TI - Beta-glucuronidase release from leukocytes in children. AB - The release of beta-glucuronidase from polymorphonuclear leukocytes (PMNs) is important in the killing of bacteria and in producing tissue damage in acute inflammation. To investigate the effects of various diseases or drugs on degranulation, we studied the kinetics of beta-glucuronidase release from PMNs exposed to opsonized zymosan. PMNs of children with bacterial infections demonstrated increased degranulation. Within 5, 15, and 30 min the PMNs released 19 +/- 3%, 23 +/- 3%, and 26 +/- 3% of total beta-glucuronidase compared to 12 +/ 2%, 15 +/- 2%, and 16 +/- 2% of total beta-glucuronidase of control PMNs. Viral infections induced a significant delay of beta-glucuronidase release from PMNs. Maintenance therapy of acute lymphoblastic leukemia with 6-mercaptopurine and methotrexate, as well as administration of vincristine, diminished the degranulation. After 5, 15, and 30 min the PMNs released 8 +/- 1%, 10 +/- 1%, and 11 +/- 1%, as well as 6 +/- 3%, 8 +/- 2%, and 9 +/- 2% of total beta glucuronidase. This study demonstrated that bacterial infections stimulate beta glucuronidase release by PMNs. In contrast, cytostatic drugs inhibit lysosomal enzyme release, increasing the susceptibility to bacterial infections. The total enzyme activities were unchanged. PMID- 3861905 TI - Negative cultural attitudes: their retarding effect on proctology. PMID- 3861906 TI - How to diagnose anorectal pain. PMID- 3861907 TI - Screening for colorectal cancer. PMID- 3861908 TI - Flexible fiberoptic sigmoidoscopy. PMID- 3861909 TI - Management of hemorrhoidal disease. PMID- 3861910 TI - Fecal impaction. PMID- 3861911 TI - Suppositories: are they effective? PMID- 3861912 TI - Lyme disease: a case report from South Carolina. PMID- 3861913 TI - Suppurative hand infections in children. PMID- 3861914 TI - An approach to treating severe osteopenia (osteoporosis). PMID- 3861915 TI - Clinical oral pathology--oral medicine. Presentation 1. PMID- 3861916 TI - Osteogenic sarcoma of the breast. A case report. PMID- 3861917 TI - The relationship between "zheng-syndromes" in traditional Chinese medicine and prostaglandins. PMID- 3861918 TI - [Changes in physical sensation during dental treatment]. PMID- 3861919 TI - [Management of infected root canals in deciduous teeth]. PMID- 3861920 TI - [Clinical use of soft lasers]. PMID- 3861921 TI - The dental lab and the future. Perspective 1990: remember the '60s. PMID- 3861922 TI - The dental lab and the future. Why each employee's workload is your biggest challenge. PMID- 3861923 TI - How to get in to see the dentist. PMID- 3861924 TI - Setting standards: what the ADA does for dental alloys. PMID- 3861925 TI - Mechanical ventilation during magnetic resonance imaging. PMID- 3861926 TI - Constitution and bylaws. Revised April 1985. Missouri Dental Association. PMID- 3861927 TI - Intrapulpal injection: adjunct to painless endodontics. PMID- 3861928 TI - Direct selection of mutants influencing gene conversion in the yeast Schizosaccharomyces pombe. AB - In Schizosaccharomyces pombe, a suppressor-active mutation at the anticodon site of the tRNASerUCA gene sup3 leads to opal (UGA)-specific suppression. Second-site mutations (rX) in sup3 inactivate the suppressor. The sup3-UGA, rX double mutants are genetically unstable in meiotic selfings, due to the intergenic transfer of information between sup3 and the unlinked genes sup9 and sup12 (Hofer et al. 1979; Munz and Leupold 1981; Munz et al. 1982). These three genes have considerable sequence homology over about 200 base pairs (Hottinger et al. 1982). Mutants showing a decrease or an increase of the meiotic instability at sup3 have been selected. One mutation (rec3-8) increases both the genetic instability and the frequency of intragenic recombination in sup3 by one order of magnitude. It has no effect on the stability of the nonsense alleles arg1-230 (UAA), ade6-704 and ural1-61 (UGA) or on the frequency of crossing-over between sup3 and the closely linked gene cdc8. The existence of a common genetic control over intragenic recombination and genetic instability at sup3 provides a direct way of selecting for rec mutants in homothallic haploid strains of S. pombe carrying a suppressor-inactive allele of sup3. It also supports the hypothesis that the instability of mutant alleles of this gene is due to chromosome mispairing at meiosis allowing sup3 to pair with sup9 or sup12 and then to undergo recombination by gene conversion restoring the suppressor-active allele sup3-UGA from the suppressor-inactive allele sup3-UGA, rX.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3861929 TI - Characterization of meiosis-deficient mutants by electron microscopy and mapping of four essential genes in the fission yeast Schizosaccharomyces pombe. AB - Meiosis-deficient mutants of the fission yeast Schizosaccharomyces pombe carrying mei1, mei2, mei3, mei4 and mes1 mutant alleles were characterized by electron microscopy and staining of the nucleus with 4', 6-diamidino-2-phenylindole. Zygotes of either mei1, mei2 or mei3 mutants contained one round nucleus with a single spindle pole body (SPB). These mutants were arrested before premeiotic DNA synthesis. Zygotes of mei4 mutants had one elongated nucleus containing thick electron-dense filaments (linear elements). In the mes1 mutant, the first meiotic division was completed but the SBPs did not duplicate. Modification of the SPB (outer plaque formation) was also blocked and the forespore membrane was not assembled. By haploidization, random spore and tetrad analyses, four essential genes for meiosis (mei2, mei3, mei4 and mes1) were mapped. Gene mei2 was located on chromosome I 14.2 cM distant from ura2. Gene mei3 was linked to ade7 (45.4 cM) on chromosome II. Gene mei4 was linked to cdc2 (0.6 cM) on chromosome II. Gene mes1 was linked to ura3 (25.3 cM) on chromosome I. PMID- 3861930 TI - Identification of the structural gene for the S9 ribosomal protein in the fungus Podospora anserina: a new protein involved in the control of translational accuracy. AB - AS9-1 was isolated as a mutation restoring growth in a strain carrying the ribosomal mutation su12-1. The AS9-1 mutation confers a weak antisuppressor effect and a low level of resistance to paromomycin. Two-dimensional polyacrylamide gel electrophoresis patterns of the ribosomal proteins from AS9-1 strains show an altered S9 protein which is more basic than the wild-type form. The presence of the two forms of the protein (wild-type and mutant) in heterocaryotic strains strongly suggests that AS9 is the structural gene for the ribosomal protein S9. PMID- 3861931 TI - Pesticide and familial leukaemia. PMID- 3861932 TI - Avascular necrosis of bone following combination chemotherapy for acute lymphocytic leukemia. AB - Avascular necrosis of bone (AVNB) is a known complication of systemic adrenocorticosteroid therapy, and one which is thought to be dose-related. However, despite the large amounts of prednisone which have been used in the standard treatment of acute lymphocytic leukemia (ALL), AVNB rarely has been reported in children with that disease. We described our experience with one adolescent with ALL who developed multifocal AVNB presenting as bone pain after aggressive chemotherapy that included a high cumulative dose of corticosteroids as well as other antitumor agents, some of which also have been associated with AVNB. Four similar cases from the literature are reviewed. Because the bone pain of AVNB can mimic that of leukemic relapse, this is an important entity to be aware of, and one which may become more common with increasingly aggressive combination chemotherapy. PMID- 3861933 TI - [Perspectives in the therapy of genetic diseases]. PMID- 3861934 TI - Nucleotide sequence analysis and enhancer function of long terminal repeats associated with an endogenous African green monkey retroviral DNA. AB - The nucleotide sequence and enhancer activity of the long terminal repeats (LTRs) associated with a cloned endogenous African green monkey (AGM) retroviral DNA designated as lambda-AGM-1 was studied. A unique feature of the endogenous AGM proviral LTRs was the presence of multiple copies of two types of directly repeating units in the U3 region: 16 8-base-pair (bp) repeats were present in the 5' LTR and 12 were present in the 3' LTR which were bound by a 6-bp perfect direct repeat; tandem duplication of a 32-bp sequence resulted in 3.5 copies in the 5' LTR and 2.5 copies in the 3' LTR. Nucleotide sequence homology was seen between the 8-bp direct repeats located in the AGM proviral LTRs and a 10-bp repeat unit of the deca-satellite present in AGM cellular DNA. The 32-bp repeats of the AGM proviral LTRs contained sequences which were related to the SV40 21-bp repeats and to the "core" of the SV40 72-bp enhancer element. Furthermore, the AGM provirus was distinct from known infectious retroviruses due to the presence of a primer-binding sequence complementary to the 3' terminus of mammalian tRNAGly. Functional analysis of the 3' LTR present in lambda-AGM-1 DNA by chloramphenicol acetyltransferase assay demonstrated enhancer activity associated with the 32-bp direct repeats. Sequences outside the 32-bp unit were necessary for full activator function, suggesting the presence of multiple enhancer domains in the AGM provirus. PMID- 3861936 TI - Characterization of a dominant anti-Ia idiotype using the IA mutant mouse strain B6.C-H-2bm12. AB - Initial studies of antibody recognition of Ia molecules using the IA mutant mouse strain bm12 suggested that two anti-Ia monoclonal antibodies (mAbs), 25-9-17 and 34-5-3, share several features: (1) indistinguishable serologic specificity including a lack of reactivity with Iabm12, (2) binding of the same spatial epitope (cluster), and (3) definition of a cross-reactive idiotype (CRI) as defined by xenogeneic antisera. In the present study we characterize a rabbit anti-idiotype (anti-Id) to 25-9-17 by affinity chromatography, and demonstrate that it detects at least two distinct idiotopes, one shared by 25-9-17 and 34-5-3 designated CRI (25-9-17) and one unique for 25-9-17 molecules. Experiments were also undertaken to determine whether CRI (25-9-17) represents a measurable component of allogeneic humoral responses to Iab antigens. By both absorption analyses of a polyspecific antiserum and production of antigenically-restricted antisera using bm12 mice, CRI (25-9-17) was found to represent a significant proportion of the antibodies to Iab. By several criteria it was shown that the CRI (25-9-17)+ molecules were among the antibodies defining the serologic lesion of bm12 mice. In preparation for future studies to alter in vivo T-cell responses involving recognition of Ia (e.g. graft vs host disease and allogeneic transplant rejection), various immunization protocols and mouse strains were tested for induction of Id (25-9-17) following in vivo administration of various anti idiotypic reagents. Rabbit anti-Id (25-9-17) successfully induced CRI (25-9-17) positive molecules in all strains tested regardless of IA or Ig genotype. Moreover, some of these treated mice produced antibodies to an Ia determinant missing on bm12 cells, suggesting that they recognize the same serologic determinant as mAb 25-9-17. PMID- 3861935 TI - Linker scanning mutagenesis of the 5'-flanking region of the mouse beta-major globin gene: sequence requirements for transcription in erythroid and nonerythroid cells. AB - We analyzed the sequences required for transcription of the mouse beta-major globin gene by introducing deletion and linker scanning mutations into the 5' flanking region and then studying the effects of these mutations on beta-globin gene transcription in a HeLa cell transient expression assay or after stable introduction into mouse erythroleukemia cells. Consistent with earlier studies, we found that three distinct regions upstream from the RNA capping site are required for efficient beta-globin gene transcription in HeLa cells: the ATA box located 30 base pairs upstream from the mRNA capping site (-30), the CCAAT box located at -75, and the distal sequence element CCACACCC located at -90. In the ATA and CAAT box regions, the sequences necessary for efficient transcription extend beyond the limits of the canonical sequences. Mutations in the sequences located between the three transcriptional control elements do not significantly affect transcription in HeLa cells. Although the promoter defined in HeLa cell transfection experiments is also required for efficient transcription in mouse erythroleukemia cells, none of the mutations tested affects the regulation of beta-globin gene transcription during mouse erythroleukemia cell differentiation. Thus, DNA sequences downstream from the mRNA cap site appear to be sufficient for the regulation of beta-globin gene expression during the differentiation of mouse erythroleukemia cells in culture. PMID- 3861937 TI - Dominant lethal study in male mice treated with ofloxacin, a new antimicrobial drug. AB - Ofloxacin (OFLX) in a single dose (250 or 2500 mg/kg) or 5 consecutive daily doses (125 or 1250 mg/kg) produced no dominant lethal mutational effects in male BDF1 strain mice during an 8-week mating schedule. Methyl methanesulfonate (MMS), used as a positive control, produced dominant lethal mutations within 1-3 weeks of mating. PMID- 3861938 TI - Screening for HTLV-III antibody. PMID- 3861939 TI - Transferrin and HLA: spontaneous abortion, neural tube defects, and natural selection. AB - We report evidence that transferrin C3, a gene present in 9 to 10 per cent of whites, is associated with recurrent spontaneous abortion (P = 0.001) and that maternal transferrin genotype has an effect on the transmission ratio of the common transferrin genes (C1, C2, and C3) from heterozygous fathers to normal offspring (P less than 0.002). The effect of maternal genotype on paternal gene transmission is an unusual example of the operation of selection in the human reproductive process. This effect, together with the separate evidence for association of the transferrin C3 allele with spontaneous abortion, indicates that transferrin is a second marker (in addition to HLA) of genes important in reproduction. On the basis of comparison of the frequencies of transferrin (chromosome 3) and HLA (chromosome 6) mating types in 348 control couples and in 81 couples who had had a child with a neural tube defect, we hypothesize that some combinations of maternal and fetal genes on these two chromosomes may be associated with neural tube defects. PMID- 3861940 TI - Human transforming growth factor-beta complementary DNA sequence and expression in normal and transformed cells. AB - The partial amino-acid sequence of purified human transforming growth factor-beta (TGF-beta) was used to identify a series of cDNA clones encoding the protein. The cDNA sequence indicates that the 112-amino acid monomeric form of the natural TGF beta homodimer is derived proteolytically from a much longer precursor polypeptide which may be secreted. TGF-beta messenger RNA is synthesized in various normal and transformed cells. PMID- 3861942 TI - Big business for suppliers. PMID- 3861941 TI - DNA makes protein makes money. PMID- 3861943 TI - Hemochromatosis--an unusual arthropathy. PMID- 3861944 TI - Intermittent claudication due to cauda equina compression. PMID- 3861945 TI - An unusual cause of recurrent transient neurologic deficit. PMID- 3861946 TI - A big pain between the small toes. PMID- 3861947 TI - Mycobacterium avium-intracellulare and lung disease: more of a problem for those of us in the Southeast. PMID- 3861948 TI - Early diagnosis of testicular carcinoma: self-examination of the testicle. PMID- 3861949 TI - North Carolina hospital utilization--we can change! PMID- 3861950 TI - Understanding the patient: medical words the doctor may not know. PMID- 3861951 TI - Sisyphus on the rocks--monoamine oxidase inhibitors. PMID- 3861952 TI - [The slice onlay]. PMID- 3861954 TI - [Idiopathic root resorption]. PMID- 3861953 TI - [Application of a problem-oriented treatment plan]. PMID- 3861955 TI - [Attitude of Amsterdam dentists toward advertising]. PMID- 3861956 TI - [Determinants of the (ir)regularity of dental attendance]. PMID- 3861957 TI - [Evaluation of a new study program: the 2d academic year]. PMID- 3861958 TI - Intracranial and otological presentation of acute lymphocytic leukemia. AB - The authors report a patient with acute lymphocytic leukemia in hematological remission who presented with both intracranial and otological manifestations of the disease. The patient presented with clinical symptoms and computed tomographic findings consistent with otomastoiditis and a contiguous brain abscess. However, both lesions were identified at operation as leukemic infiltrates. Intracranial mass lesions and otological complications associated with leukemia are reviewed. PMID- 3861959 TI - [Transcervical intra-amniotic induction with PgF2 alpha in missed abortion and labor in the 3d trimester of pregnancy with dead fetus. II]. PMID- 3861960 TI - [Possibilities and limitations of the clinical use of specific monoclonal antibodies for epithelial ovarian carcinomas: CA125K]. PMID- 3861961 TI - Abstracts of the eighth annual meeting of the Japan Neuroscience Society. Osaka, Japan, November 23-25, 1984. PMID- 3861962 TI - Intraligamentary analgesia: a clinical study in private practice. PMID- 3861963 TI - The development of supernumerary teeth during fixed appliance orthodontic treatment: a case report. PMID- 3861965 TI - Serum fructosamine in patients with diabetes mellitus. AB - Serum fructosamine was compared with other measures of blood glucose control in 11 non-diabetic volunteers, 14 type 1 and 14 type 2 diabetic patients. Estimates of mean plasma glucose concentrations for the 28 diabetic patients were made by nine physicians, based on their interpretation of historical data, home capillary blood glucose profiles, fasting and random plasma glucose and plasma lipid levels. Significant differences between estimated and measured mean glucose levels were apparent with a tendency for physicians to underestimate mean blood glucose in the hyperglycaemic range (glucose greater than 11 mmol/l). Fructosamine results on the same patients correlated linearly both with mean plasma glucose concentrations (r = 0.86, p less than 0.001) and with glycosylated haemoglobin (HbA1c) levels (r = 0.93, p less than 0.001) and correctly classified diabetes control in most patients. Despite marked fluctuations of plasma glucose concentration, serum fructosamine levels measured at different times of the day did not alter significantly. We conclude that a random serum sample analysed for fructosamine provides a simple and reliable means to measure the efficacy of therapy and often provides information superior to clinical assessment of diabetic control. PMID- 3861964 TI - Prevalence of hepatitis B infections in a multiracial New Zealand community. AB - Plans to control hepatitis B virus (HBV) infections in a high risk mixed race community, included the need for prevalence studies of HBV markers. Accordingly 7901 subjects, 93% of the population of Kawerau, where European and non-European children are present in almost equal numbers, were tested for hepatitis B surface antigen (HBsAg) and antibody to HBsAg (anti-HBs). Positive HBsAg sera were titred and tested for hepatitis B e antigen (HBeAg). Highest rates for HBsAg and anti HBs combined, were found in the 15-19 year old age groups; 61.6% in Europeans and 74.5% in non-Europeans. HBsAg prevalence was 4.2% and 18.2% respectively in the same groups. Ninety-six point four percent of 503 HBsAg positives followed up were confirmed as carriers. Infectivity as shown by HBeAg prevalence and HBsAg titre was highest in 0-10 year olds and declined with age. Prevalences were low in children aged less than one year old, suggesting that perinatal transmission was not a major factor in childhood carriage. Therefore attempts to control acquisition of carriage by vaccinating only those children of HBeAg positive mothers are unlikely to be successful. PMID- 3861966 TI - Private medical insurance and elective surgery during early childhood. AB - The relationship between private medical insurance coverage and rates of elective ENT surgery was studied in a birth cohort of seven-year-old children. This analysis suggested that private medical insurance coverage was associated with differences in patterns of elective surgery with children whose families were covered by insurance being more likely to receive elective ENT surgery by seven years and far more likely to receive this treatment at a private hospital. These trends persisted when the child's history of ear/throat infections and family social and economic background were taken into account statistically. PMID- 3861967 TI - The high cost of medicine: decision time. PMID- 3861968 TI - Eating attitudes tests. PMID- 3861969 TI - Asthma and diary/treatment cards. PMID- 3861970 TI - Repetitive strain injury (RSI) and magnesium and fluoride intake. PMID- 3861971 TI - Seat belts. PMID- 3861972 TI - Effect of a megadose of ascorbic acid, a meal and orange juice on the absorption of selenium as sodium selenite. AB - Urinary and faecal excretions of selenium were measured for five days following a dose of 1 mg Se as sodium selenite in ten young women after an overnight fast. The selenite was taken two hours before a meal or mixed with 1 g ascorbic acid; or with a continental type breakfast providing 4.5-5.6 micrograms Se and 0.6-0.8 mg Cu, with or without 200 ml orange juice (60 mg ascorbic acid). The light meal appeared to have little effect on selenite-Se absorption, and orange juice appeared even to assist it. But the availability of Se was reduced almost to zero when selenite and 1 g ascorbic acid were taken together well before the meal. PMID- 3861973 TI - Renal failure with potassium-sparing diuretics. AB - In one year 19 patients aged 73 SD 8 yr were referred with renal failure (plasma creatinine 0.14-0.52 mmol/l; urea 7.9-39.5 mmol/l; potassium 2.9-6.1 mmol/l, who were taking amiloride/hydrochlorothiazide (ten), amiloride alone (one) or triamterene/hydrochlorothiazide (eight). Six patients were taking other diuretics. Sixteen patients were being treated for hypertension and three for fluid retention; five hypertensive patients were also taking non-steroidal anti inflammatory drugs (NSAID). Four patients were hypokalaemic, three were volume depleted. All potassium-sparing diuretics and NSAID were stopped (four required another diuretic). Six-100 days later renal function was improved in 17 patients, unchanged in one and one patient had died of uraemia. Blood pressure was satisfactory on no therapy in 11 patients and two normotensive patients were oedema-free. In elderly patients with renal impairment potassium-sparing diuretics may cause renal failure, sometimes secondary to hypovolaemia, and NSAID may potentiate the effect. PMID- 3861974 TI - Arthroscopic meniscectomy. PMID- 3861975 TI - Recommendations for routine cervical screening. AB - Because of concern about the rising incidence of cervical cancer in young women, the Department of Health and the Cancer Society invited a working group to make recommendations on cervical screening. There is now compelling evidence that cytological screening is an effective preventive measure. All women who have had sexual intercourse should be offered screening. They should be screened as soon as possible after commencing sexual activity, or when first receiving contraceptive advice, antenatal care, or treatment of a sexually transmitted disease. If the first smear is negative, it should thereafter be repeated at least every three years. A special effort must be made to reach women who have never been screened, including those who are middle-aged, or elderly. The cervical smear test should be part of the assessment of women with gynaecological symptoms regardless of whether there has been a negative smear within the previous three years. The three-yearly schedule also does not apply to women who have had an abnormal smear. PMID- 3861976 TI - The management of dying patients in New Zealand coronary care units. AB - I investigated by questionnaire the current management of dying patients and their relatives in New Zealand coronary care units as perceived by their charge nurses. Only one unit would move such a patient to a general ward regardless of the bed occupancy state. While all units attempt to inform relatives of the expected death, only 8% usually tell the patient and 21% would never do so. When this information is given to both it is usually conveyed in separate interviews, usually by a consultant physician. In one unit all are informed together. The bad news is given to relatives in a corridor in 25% of units. Follow-up contact of any sort with bereaved relatives was reported by 12%. It is suggested that this and the apparent reluctance of staff to communicate about likely outcome with patients as well as their relatives may merit further study. PMID- 3861977 TI - Heavy drinking and alcohol knowledge among Hastings fifth formers. AB - One hundred and seventy-nine male and 195 female fifth formers from the five state secondary schools in Hastings/Havelock North completed a 29 item questionnaire. Thirty-one males (17%) and 18 females (9%) reported getting drunk at least twice a month and having five or more drinks on each drinking occasion. These teenagers were classified as heavy drinkers; the males knew less about alcohol, and had different attitudes to its use than their peers. Deficits in the alcohol knowledge of fifth formers were discovered also. PMID- 3861978 TI - Gastrointestinal symptoms during exercise in Enduro athletes: prevalence and speculations on the aetiology. AB - A study of the prevalence of gastrointestinal symptoms during exercise was carried out on athletes who participated in the recent Enduro event in Dunedin. Of 119 competitors, 70 (59%) responded to our questionnaire and demonstrated a prevalence of gastrointestinal symptoms of 81%. Upper gastrointestinal symptoms were noticed in 58% with lower gastrointestinal symptoms, tending to be more severe and significant to the athlete, noticed in 61%. Speculations on the aetiology of these symptoms are included. The demonstrated high prevalence of symptoms during exercise and the relative lack of knowledge in this area provides a fertile ground for further objective research. PMID- 3861980 TI - Subcutaneous gammaglobulin: effective management of hypogammaglobulinaemia. PMID- 3861979 TI - Cognitive rehabilitation of amnesic alcoholics: a twelve month follow-up study. AB - The rehabilitation status of amnesic alcoholic patients who previously participated in either a memory training programme, an activation control programme, or an assessment only condition, was determined at a 12 month follow up. An earlier study found a non-specific improvement in memory functioning for patients in both group programmes. These patients were also found to be more likely to be discharged from hospital at the 12 month follow-up. It is suggested that further attempts to rehabilitate brain-damaged alcoholics may be justified. PMID- 3861981 TI - Large bowel cancer survey: preliminary results. PMID- 3861982 TI - Eaten by worms: a comment on cervical screening. PMID- 3861983 TI - Admission to medical schools. PMID- 3861984 TI - Lymphadenopathy and suppressed emotion. PMID- 3861985 TI - German euthanasia program. PMID- 3861986 TI - The census and smoking. PMID- 3861987 TI - The oral contraceptive pill and benign intracranial hypertension. PMID- 3861988 TI - Acupuncture in the post-concussional syndrome. PMID- 3861989 TI - Echo 30 outbreak, 1983-4. PMID- 3861990 TI - Fluoridation. PMID- 3861991 TI - Intrusive luxation: diagnosis, complications and treatment. PMID- 3861992 TI - [Intraocular penetration of systemically administered cephalosporins under steady state conditions in animal experiments]. AB - In previous studies of intraocular penetration of systemically applied antibiotics a single dose of the antibiotic was applied. An experimental study was performed in order to determine if maintaining a constant serum level for an extended period of time will lead to an increase in ocular concentration. The antibiotic dosage was calculated so that the serum level remained constant for a given period of time. Using the rabbit as an experimental animal two cephalosporins (Cefsulodin, Cefotiam) were then injected intravenously using an infusion pump. Evaluation of serum levels (high-performance liquid chromatography) revealed constant levels for each animal but different interindividual levels. The intraocular concentrations of Cefsulodin and Cefotiam were different. The intraocular level of Cefsulodin rose continuously over a period of 5 h, whereas the Cefotiam levels remained at the concentration measured after bolus injection. PMID- 3861993 TI - Branchial arch cyst. Case report and review of the literature. PMID- 3861994 TI - Periodontal consideration relevant to restorative dentistry. The proper management of treatment. PMID- 3861995 TI - Periodontal disease in America. The unnecessary epidemic. PMID- 3861996 TI - Trusts for dentists. An essential planning tool for high income earners. PMID- 3861997 TI - Correction of a severe anterior protrusion as a result of a thumb sucking habit. PMID- 3861998 TI - Sharing office costs. PMID- 3861999 TI - What is dental negligence? PMID- 3862000 TI - The use of ultrasonic endodontic instrumentation in the re-treatment of a paste filled endodontic tooth. AB - A technique using ultrasonic endodontic instruments in re-treating hard-paste- filled root canals is presented. The technique is time-consuming but may eliminate the necessity for a surgical approach in the re-treatment of paste filled teeth. PMID- 3862001 TI - The central plane of the image layer determined experimentally in various rotational panoramic x-ray machines. AB - The location of the image layer with respect to how a patient is positioned in a rotational panoramic machine is very critical. At present, no simple method exists for routine testing of panoramic machines to verify that the image layer is where the manufacturer intended it to be. The purpose of this experiment was to locate the central plane of the image layer with respect to a reference point on various machines currently on the market. The data obtained from this study can be used for further evaluations of the consistency in the location of the image layer, first with the existing device and later with a test device that would be adaptable to these machines and serve as a quality-control device in assuring that the machines are functioning properly. PMID- 3862002 TI - A panoramic radiographic analysis of Air Force basic trainees. AB - In a comprehensive study of 1,059 panoramic radiographs of Air Force recruits, the following findings were noted: 10% of the recruits had no restorations, no radiographic decay, and no teeth missing; 10% had at least one endodontically treated teeth; and 5% had at least one metallic crown. The typical recruit averaged five restorations, one impaction, and one missing tooth. PMID- 3862003 TI - Nasolabial cyst. PMID- 3862004 TI - Aphthous stomatitis with involvement of attached gingiva. AB - Involvement of the attached gingiva by aphthous stomatitis is considered uncommon. This report presents two cases in which patients with aphthous stomatitis developed ulcers on multiple mucosal surfaces, including the attached gingiva. The gingival ulcers began on the marginal gingiva and enlarged to form V or U-shaped ulcers on the attached gingiva. Other disorders producing gingival ulceration were excluded on the basis of history, clinical features, bacterial culture, viral culture, and biopsy with routine microscopic study as well as direct immunofluorescence. PMID- 3862005 TI - Quantitative assessment of isotope activity in the temporomandibular joint regions as a means of assessing unilateral condylar hypertrophy. AB - The uptake of radioisotope in the temporomandibular joints of normal subjects was quantified to act as baseline in studies of unilateral condylar hyperplasia. Any difference in activity between the right and left sides greater than 10% appears to be significant. PMID- 3862006 TI - Selective emergency arteriography in cases of penetrating maxillofacial trauma. AB - Selective emergency arteriography can be a most important diagnostic adjunct in the evaluation of suspected vascular injury sustained during penetrating maxillofacial trauma. Arteriography can provide essential information prior to operative exploration and treatment and may even obviate surgical exploration. Complications are rare, and contraindications are few. PMID- 3862007 TI - Intentional vital root transection: a 52-week histopathologic study in Macaca mulatta. AB - Past studies dealing with the vascular supply to surgically mobilized dentoalveolar segments have mentioned occasional encounters with vital root transection and have noted varying degrees of pulpal response to this insult. The purpose of this investigation was to observe the pulpal and periapical responses of monkey dental tissues to intentional vital root transection over a 1-year postoperative period. Four adult Macaca mulatta monkeys were used in this study. All roots were surgically transected within the apical third with a bur. Maxillary and mandibular quadrants for 1, 2, 3, 4, 6, 12, 24, and 52 weeks following surgery were obtained after the animals were killed by perfusion of the left ventricle. The tissue blocks were prepared by routine histologic methods. The results demonstrated a disruption of the normal pulpal architecture, with initial pulpal degeneration and subsequent early replacement by the periodontal ligament tissue. A cellular cemental lining of the root canal occurred in all specimens. The periodontal ligament-like tissue continued to deposit cementum, resulting in almost total obliteration of the root canal and pulp chamber and leaving an intact but much reduced blood supply to the pulp chamber containing periodontal tissues. PMID- 3862008 TI - Peripheral facial nerve paralysis after local dental anesthesia. AB - An unusual case of unilateral peripheral facial nerve paralysis following local dental anesthesia is reported. The onset of the paralysis was 13 days after the injection, whereas the longest period reported previously was 5 days. The etiology, management, and prognosis are discussed. PMID- 3862009 TI - Monocular blindness developing 7 days after repair of zygomaticomaxillary complex fracture. A clinical report. AB - Blindness following zygomaticomaxillary complex (ZMC) fracture and surgical repair is an unfortunate and uncommon complication. A review of the literature reveals fewer than 25 cases of monocular blindness resulting from zygomaticomaxillary fracture or repair. The case presented here is that of a man who was assaulted with a baseball bat and suffered a mildly displaced ZMC fracture. On admission, the patient had light perception only in his left eye. During his convalescence, vision in his left eye gradually improved to the point of allowing him to read a newspaper without difficulty. Then, 9 days after the injury (7 days after surgical repair), the patient awoke with complete blindness of the left eye. The possible mechanisms for such loss of vision are discussed. PMID- 3862010 TI - A prospective follow-up study of 570 patients with oral lichen planus: persistence, remission, and malignant association. AB - Five hundred seventy patients with oral lichen planus were followed for periods ranging from 6 months to more than 10 years (mean, 5.6 years). The mean age was 52 years, and 67% of the patients were women. Erosive lichen planus was the most frequent clinical form, and the buccal mucosa was the most common site. Of the 75% patients treated with corticosteroids, 29% experienced complete remission and 63% had partial remission while maintained on medication. Fewer than 3% experienced spontaneous remission. Malignant transformation occurred in 7 patients (1.2%) in a mean time of 3.4 years after the onset of lichen planus. The onset of lichen planus could not be associated with any evident factors, such as family history, Candida albicans, glucose intolerance, and smoking. PMID- 3862011 TI - Evaluation of a method to study the uptake of prednisolone sodium phosphate from different oral mucosal sites. AB - A filter paper disk method for the delivery of drugs to oral mucosal sites was evaluated. The water-soluble steroid prednisolone sodium phosphate was chosen as the tracer drug. The in vitro recovery of the steroid from the filter paper disks after placement onto glass was greater than 95% and within the pipetting error for the method. Filter paper disks containing 1.25 mg doses of prednisolone sodium phosphate were placed on three different intraoral sites for 5 minutes and the drug retention was calculated in six volunteers. The mean percentage retention at the three sites was 65.4% for the sublingual mucosa, 24.1% for the buccal mucosa, and 9.9% for the palatal mucosa. The differences between the sites were all significant. The method may be useful for studying the retention of other drugs at various oral mucosal sites and for determining the factors that affect such retention. PMID- 3862012 TI - Gingival hyperplasia induced by nifedipine, an arterial vasodilating drug. AB - In a 32-year-old patient a relationship was suggested between the development of gingival hyperplasia and the vasodilating drug nifedipine (Adalat). The hyperplasia was clinically and histologically similar to the gingival hyperplasia previously noticed with diphenylhydantoin. The nifedipine-induced gingival hyperplasia may be caused by alterations in calcium metabolism. PMID- 3862013 TI - A study of the clinical characteristics and treatment of oral carcinoma in situ. AB - Twelve patients with oral carcinoma in situ were examined to clarify the clinical features and the most suitable therapy for this lesion. Seven cases were classified clinically as the erythroplakic type, two as the leukoplakic type, and three as the mixed type. The cumulative survival rate of ten cases, excluding two cases with lesions of the soft palate, was 100% in 10 years. Of 12 lesions of oral carcinoma in situ 50% progressed into invasive carcinoma. Erythroplakic lesions of oral carcinoma in situ were more aggressive than the other two types. The most suitable therapy for this lesion is prompt surgical treatment. PMID- 3862014 TI - Involvement of the mandibular canal: early sign of osteogenic sarcoma of the mandible. AB - A case of osteogenic sarcoma of the mandible is presented. The most striking radiologic finding in this case was irregular widening of the mandibular canal, with areas of narrowing and loss of fine parallel cortical margins of the walls of the canal. These changes were accompanied by widening of the periodontal membrane of the adjoining teeth, an early sign of osteogenic sarcoma described by Garrington and colleagues, and loss of lamina dura of the same teeth and one additional adjacent tooth. PMID- 3862015 TI - Eruption of rootless teeth in congenital renal disease. AB - Eruption of rootless mandibular premolars and other dental defects in a girl suffering from congenital kidney disease are described. The successful management of these excessively mobile teeth allowed them to develop roots of sufficient length. Hypotheses of tooth emergence are viewed in the light of these rootless eruptions. PMID- 3862016 TI - Lipoma of the parotid gland. AB - This case report describes a lipoma that appeared as a parotid gland tumor. The lipoma is an asymptomatic, slow-growing, nontender mass. This lesion is rare at this site and exhibits no unique clinical features. There is no reliable method of establishing a preoperative diagnosis; therefore, the lesion should be included as a rare possibility in the differential diagnosis of tumors involving the parotid gland. The treatment of choice is surgical excision, and recurrence is rare. PMID- 3862017 TI - Paste technique re-treatment study: a clinical, histopathologic, and radiographic evaluation of 50 cases. AB - This study correlated clinical, radiographic, and histopathologic aspects of 50 endodontic failures involving the paste technique. All clinical and radiographic findings were recorded. The teeth were re-treated with gutta-percha/Kloroperka and lateral condensation. Subsequently, periapical surgery, including retrograde amalgam filling, was performed for the removal of material in the periapical tissue. The resulting biopsy specimens were processed for histologic evaluation. Although neutrophilic leukocytes predominated in some cases, all types of inflammatory cells were present. Macrophages and foreign body cells contained paste particles. The blood pigment distinguished hemorrhage due to surgery from pathologic circulatory changes. There was resorption/apposition of bone and root fragments. Epithelial strands and parts of cyst walls were observed. There was a correlation between a periapical radiolucency and inflammation but no correlation between amounts and types of inflammatory cells and pain. Paste placed beyond the foramen caused tissue damage and reduced prognosis. PMID- 3862018 TI - Clinical observations regarding the treatment of traumatically avulsed mature teeth. Part 1. AB - A documented case involving the simultaneous avulsion of two maxillary incisors, intraorally and extraorally, was reported. Long-term observations following replantation treatment revealed several interesting clinical features: The prognosis of replanted teeth may be more favorable following intraoral avulsions. The intrusion phenomenon associated with replanted incisors appears to be directly related to replacement root resorption or ankylosis; occlusal forces may be a factor. Teeth extraorally avulsed for a few hours may still provide a useful function, albeit temporary, with replantation treatment. These teeth may not reveal clinical ankylosis or replacement resorption for periods of 1 to 2 years, or possibly longer, following replantation. Long-term studies can help evaluate replantation techniques. PMID- 3862019 TI - Anterior repositioning splint in the treatment of temporomandibular joints with reciprocal clicking: comparison with a flat occlusal splint and an untreated control group. AB - The anterior repositioning splint is widely used to treat temporomandibular joints with reciprocal clicking. This treatment was compared to a flat occlusal splint and to an untreated control group. The anterior repositioning splint decreased joint pain at rest, during chewing, and during protrusion. Reciprocal clicking was eliminated and palpatory tenderness of the joint and muscles was reduced. This favorable effect was of short duration. The majority of the patients reported pain and clicking and demonstrated tenderness following removal of the splint after 6 weeks' treatment. The flat occlusal splint decreased joint tenderness but did not affect clicking or muscle tenderness. In the control group the clicking remained and the frequency of muscle tenderness increased. The results indicate that temporomandibular joints with reciprocal clicking can be successfully treated by positioning the mandible anteriorly. Since the symptoms returned when the splint was removed a more permanent change of mandibular position seems necessary. PMID- 3862020 TI - Evaluation of methylprednisolone and flurbiprofen for inhibition of the postoperative inflammatory response. AB - The ideal anti-inflammatory agent for use in third molar surgery should control pain, reduce swelling and trismus, and have no unwanted side effects. This investigation evaluated and compared the efficacy of corticosteroids, nonsteroidal anti-inflammatory agents, and placebo for reduction of the acute postoperative inflammatory response and its undesirable sequelae in patients undergoing the surgical removal of impacted third molars. Corticosteroids appeared to have maximal effect in controlling edema but had minimal analgesic effects. Nonsteroidal anti-inflammatory agents appear to be effective analgesics. A combination of these agents may be necessary to control the sequelae of oral surgical procedures most effectively. PMID- 3862021 TI - Prevention of alveolar bone loss postextraction with HTR grafting material. PMID- 3862022 TI - Diagnosis of acute maxillofacial infections: the role of computerized tomography. AB - Most acute maxillofacial infections are diagnosed by conventional dental and maxillofacial radiographic techniques. Computed tomography has greatly improved our ability to evaluate infections of the maxillofacial region that originate or extend into the contiguous soft tissues and paranasal sinuses. Four cases in which computed tomography facilitated diagnosis and treatment of advanced infections of the maxillofacial region are presented. In one case an underlying neoplasm was identified. PMID- 3862023 TI - Root tip recovery via local anesthetic needle. PMID- 3862024 TI - Interradicular dentin dysplasia associated with amelogenesis imperfecta. AB - Very few reports are available on the occurrence of dysplasia of both enamel and dentin. This report concerns a rare association of amelogenesis imperfecta with a dysplasia of dentin in the interradicular area in sisters of Japanese descent who have no other morphologic anomalies. Retarded tooth eruption was also a clinical feature in both sisters. Histologic examination of several teeth revealed that the anomalous interradicular dentin consisted of a mass of small, onion-like calcified bodies. The absence of any dental abnormalities in both parents, who are related as first cousins, supports the concept of autosomal recessive inheritance for this trait. PMID- 3862025 TI - Adenomatoid hyperplasia of mucous salivary glands: a case involving the retromolar area. AB - This case report describes an unusual salivary gland lesion that involved the retromolar area. This lesion presented clinically as an asymptomatic tumorlike nodule that was characterized microscopically by a proliferation of mucous salivary gland tissue. The exact nature of this focal enlargement of accessory salivary gland tissue is not known. Because this lesion cannot be distinguished clinically from a salivary gland neoplasm, it must be excised and examined microscopically. PMID- 3862026 TI - Dermoid cyst of the floor of the mouth: lateral teratoid cyst with sinus tract in an infant. PMID- 3862027 TI - Starch artifacts in oral cytologic specimens. AB - Starch powder from surgical gloves is a common artifact that may superficially resemble atypical epithelial cells or spores in oral cytologic specimens. This article describes the distinguishing features of starch granules visible under a light microscope and discusses their clinical relevance. PMID- 3862028 TI - Stomatitis areata migrans affecting the gingiva. AB - A 62-year-old male patient with a varied medical history and oral lesions consistent with stomatitis areata migrans is discussed. The stomatitis areata migrans affected essentially all oral soft tissues, including rarely involved gingival tissues. Clinical and histologic documentation of the gingival involvement is presented. PMID- 3862029 TI - Pulp response after calcitonin treatment of direct exposures in the dog. AB - The hypocalcemic hormone, calcitonin, was used in directly pulp-capped teeth to determine whether or not calcitonin promoted healing. Two dogs were used. Twelve teeth received the calcitonin; nine control teeth were prepared, and five were treated with calcium hydroxide. Calcitonin did not increase either the rate of healing or the amount of secondary dentin formed. Calcitonin reduced the degree of inflammation in the treated tooth pulps. PMID- 3862030 TI - Apical surgery with a dental microscope. PMID- 3862031 TI - Dental radiologic survey of Virginia and Florida. AB - The results of a survey of 2,257 dental offices recording dental radiology practices are presented and compared to earlier surveys. In many practices patients were exposed to radiographs at predetermined intervals; the variables of manual processing are not well controlled, and darkrooms had excessive light. PMID- 3862032 TI - Deciduous tooth anomalies and partial anodontia. PMID- 3862033 TI - Calcific metamorphosis with internal resorption. AB - We have presented a case in which 3.7-year-old patient exhibited calcific metamorphosis of a maxillary primary central incisor at the initial visit, with subsequently internal resorption developing in the same tooth. This case underscores the need for careful monitoring of traumatized teeth that have undergone calcific metamorphosis. PMID- 3862034 TI - Mandibular range of motion versus arthrographic diagnosis of the temporomandibular joint. AB - The range of mandibular movements has been correlated with arthrographic findings of the temporomandibular joint in 205 patients. Abnormalities of meniscus position and function have been found to influence mandibular movements in characteristic patterns. However, altered mandibular movements alone are insufficient for a definitive clinical diagnosis of the specific type of internal derangement of the temporomandibular joint. PMID- 3862035 TI - Diagnosis and primary management of laryngeal trauma. AB - Four cases of laryngeal trauma are presented and the literature is reviewed. Diagnostic techniques and controversial primary treatment of airway obstruction are discussed. Recommendations include the use of indirect laryngoscopy on initial examination and the performance of a tracheostomy in cases of airway obstruction, in lieu of endotracheal intubation. The cases illustrate these points and demonstrate the variability in time intervals between injury and onset of symptoms. PMID- 3862036 TI - Intradental lesions and their reversal in a patient being treated for end-stage renal disease. AB - The number of patients with end-stage renal disease who are being successfully treated by hemodialysis is rapidly increasing across the nation. These patients present some special problems for dentists to correctly diagnose and treat. Presented here is a brief outline of the etiology of changes that might occur, along with the case report of a patient who developed unusual intradental lesions that reversed themselves as the patient's general medical problems were brought under control. PMID- 3862037 TI - Rigid fixation of maxillary osteotomies: a preliminary report and technique article. AB - The authors review their experiences with seventy cases of maxillary osteotomy rigidly stabilized with bone plates and minimal or no maxillomandibular fixation. The surgical technique, which allows consistent placement of plates in dense bone without endangering root apices, is described in detail. Orthodontic management has been started as early as 3 weeks postoperatively. A disadvantage of small plates is the possible need for their removal, which requires a second surgical procedure. Plates have been removed or replaced in five patients in this series. PMID- 3862038 TI - Intraoperative measurement of maxillary repositioning: an ancillary technique. AB - A technique for measuring maxillary movement with the LeFort I osteotomy is described. Three-dimensional measurement of upper jaw position can be gauged to within 1 mm by means of a simple two-point measurement system. When used in combination with direct bone measurements and appropriate surgical sequencing, assessment of maxillary repositioning is possible at virtually any time during the surgical procedure. PMID- 3862039 TI - Psychometric profiles and facial pain. AB - The myofacial pain-dysfunction syndrome and atypical facial pain are the most prevalent chronic pain disorders of the facial region. Previously, the myofacial pain-dysfunction syndrome included all TMJ/masticatory muscle pain, jaw dysfunction, and joint clicking. We have segregated two major subgroups subsumed within this diagnostic classification and have assigned them to a myogenic facial pain (MFP) group and a TMJ internal derangement (TMJID) group. Significant age and personality differences were uncovered when these subpopulations were compared to subjects with atypical facial pain (AFP). Both MFP and TMJID groups are relatively homologous, involving younger persons than AFP subjects. Alternatively, when MFP, TMJID, and AFP subjects were compared for differences in MMPI psychometric scales, MFP and AFP subjects exhibited significantly higher scores, particularly for hypochondriasis, depression, and hysteria, than did TMJID subjects. It is concluded that subcategorization of myofascial pain dysfunction patients into a myogenic pain group and a TMJ internal derangement group is justified on the basis of psychometric differences. Furthermore, psychopathologic factors are more significant among MFP and AFP subjects than among TMJID patients. PMID- 3862040 TI - Oral complications of acute leukemia: prophylactic impact of a chlorhexidine mouth rinse regimen. AB - The prophylactic value of twice-daily mouth rinses with a solution of 0.1% chlorhexidine gluconate in minimizing oral complications during remission induction chemotherapy was tested in sixteen patients with acute myeloblastic leukemia. The study design was double blind with a placebo control. Standardized measurement indices were employed to assess the dental plaque levels and the degree of gingivitis and mucositis during remission-induction. The treatment group demonstrated superior oral health on the basis of each of these measurement parameters. A moderate increase in tooth staining was observed in the treatment group. The results also suggested the potential value of chlorhexidine mouth rinses in the prophylaxis of oral candidiasis in the myelosuppressed patient. PMID- 3862041 TI - Oral mucosal antigen reactivity during exacerbation and remission phases of recurrent aphthous ulceration. AB - Pooled serum from subjects with active recurrent aphthous ulceration (RAU) and from control subjects was tested against indigenous surface mucosal material from subjects with active RAU, remission RAU subjects, and normal subjects. IgM antibody reactivity in both sera was significantly higher to material from remission RAU subject mucosa than to material from control subjects or subjects with active RAU. IgG antibody activity in both sera was significantly lower to material from active RAU subject mucosa than to material from control subjects or subjects whose RAU was in remission. These results suggest that the character and amount of antigen on mucosa may differ during the pathogenesis of RAU. PMID- 3862042 TI - Proliferative verrucous leukoplakia. A long-term study of thirty patients. AB - Up to 6% of oral leukoplakia, a relatively common mucosal disease, can be expected to become malignant. This report describes a long-term study of 30 patients in whom a particular form of leukoplakia was identified and labeled proliferative verrucous leukoplakia (PVL), a disease of unknown origin, which exhibits a strong tendency to develop areas of carcinoma. PVL begins as a simple hyperkeratosis but tends to spread and become multifocal. PVL is slow-growing, persistent, and irreversible, and in time areas become exophytic, wartlike, and apparently resistant to all forms of therapy as recurrence is the rule. The disease was most commonly seen in elderly women and had been present for many years. Patients were followed for 1 to 20 years. Thirteen died of or with their disease, 14 were alive with PVL, and 3 were alive without PVL at last contact. PVL rarely regressed despite therapy. All patients who died had persistent or recurrent disease. PVL appears to constitute a continuum of hyperkeratotic disease, ranging from a simple hyperkeratosis at one end to invasive squamous cell carcinoma at the other. Microscopic findings are dependent upon the stage of the disease's development and the location and adequacy of the biopsy. PMID- 3862043 TI - Dental structures in benign ovarian cystic teratomas (dermoid cysts). A study of ten cases with a review of the literature. AB - Tooth-forming ovarian teratomas provide a unique opportunity to observe the effect(s) of the tumor environment on developing dental structures. Histologic examination of two such teratomas showed essentially normal formation of dental structures in one and pronouncedly aberrant morphodifferentiation of dental tissues in the other. The macroscopic examination of a total of twenty-five teeth from eight additional teratomas showed most teeth to have premolar or molar forms. Most teeth were not distinctly deciduous or permanent but had intermediate shapes. The teeth within a tumor tended not to form normal morphologic sequences. It is concluded that dental structures in ovarian teratomas are products of normal genetic/epigenetic events modified to a greater or lesser degree by unknown factors in the tumor environment. PMID- 3862044 TI - Lichenoid dysplasia: a distinct histopathologic entity. AB - We have observed, both in the literature and in practice, that pathologists frequently fail to appreciate subtle dysplastic features in lesions with lichenoid histomorphology. Aside from the obvious diagnostic errors, such oversight can lead to mistaken impressions concerning the natural behavior of relatively benign processes. Accordingly, we have enumerated histologic criteria which define the entity known as "lichenoid dysplasia." Histologic features of lichenoid dysplasia are illustrated and compared with those of other lichenoid lesions, including lichen planus plus nonspecific lichenoid stomatidides. The rationale for and the advantages and objectives of this classification are discussed. PMID- 3862045 TI - The median mandibular cyst and its endodontic significance. AB - The median mandibular cyst is a very rare cyst of debatable origin that occurs in the midline of the mandible. A review of the literature and an additional case are presented, with emphasis on diagnosis, treatment planning and the need for endodontic therapy in the area of the lesion. PMID- 3862046 TI - The solvent action of sodium hypochlorite on bovine tendon collagen, bovine pulp, and bovine gingiva. AB - The purpose of this study was to determine the optimum temperature and concentration of sodium hypochlorite solution required to dissolve bovine tendon collagen, pulp, and gingiva. The 10% concentration of sodium hypochlorite solution at 37 degrees C was found to be most effective in dissolving bovine tendon collagen, pulp, and gingiva. Sodium hypochlorite solution was more effective in dissolving bovine pulp or tendon collagen than in dissolving bovine gingiva. PMID- 3862047 TI - Metastatic breast carcinoma disguised as periapical disease in the maxilla. AB - This article reports a case of breast carcinoma metastasis to the maxilla. The symptoms and original diagnosis pointed to periapical disease. A biopsy confirmed the secondary diagnosis. This may be the first reported case of metastasis to the maxilla. PMID- 3862048 TI - Assessment of mandibular condyle position: a comparison of transcranial radiographs and linear tomograms. AB - Transcranial radiographs are frequently used to assess condyle-fossa relationships. However, their validity in representing condyle position has been questioned. Intermethod comparisons were performed between methods assessing condyle position by subjective evaluation and by linear and area measurement of the interarticular space. Linear measurement of the subjective closest anterior and posterior interarticular space and subjective evaluation were the mutually preferred methods in both transcranial radiographs and tomograms. Statistically significant correlations were shown (p less than 0.05) for condyle position between pairs of clinical transcranial radiographs and linear tomograms of the same temporomandibular joints. However there was a qualitative concordance in assessed posterior concentric and anterior positions in only 80% of the pairs, and a full concordance in the degree of condylar displacement was found in only 60% of the cases. Although still clinically helpful, the use of transcranial radiographs to monitor small changes in condylar position relative to the tomogram was questioned. PMID- 3862049 TI - Dental radiology instructors in United States dental hygiene programs. AB - A survey of dental radiology instructors in accredited United States dental hygiene programs found the majority of such faculty members to be registered dental hygienists with only very limited formal training in radiology. Most of the radiography faculty had less than 5 years' experience teaching that subject. Most instructors spent less than a quarter of each week teaching radiology. Student: faculty ratios varied considerably from program to program. PMID- 3862050 TI - Radiology requirements in United States dental hygiene programs. AB - A survey of accredited dental hygiene programs in the United States revealed little standardization of requirements for dental radiology. However, most programs satisfied suggested minimum guidelines for didactic instruction in radiology. Six programs had no preclinical laboratory requirements, and seven had no clinical requirements. An area of concern was the high percentage of programs in which classmates exposed one another to ionizing radiation for training purposes. PMID- 3862051 TI - Pneumatized articular eminence. PMID- 3862052 TI - Biting the bullet. PMID- 3862053 TI - Submandibular calculus. PMID- 3862054 TI - [What has been done and what remains to be done with regard to the treatment of lymphoblastic leukemia in children]. PMID- 3862056 TI - [Analysis of factors causing recurrences of acute leukemia after completed treatment]. PMID- 3862055 TI - [Analysis of advances in the treatment of lymphoblastic leukemia]. PMID- 3862057 TI - [Early deaths of children treated for lymphoblastic leukemia]. PMID- 3862058 TI - [Evaluation of physical fitness of children with lymphoblastic leukemia after completion of intensive treatment]. PMID- 3862059 TI - [Intensification of treatment of lymphoblastic leukemia in children]. PMID- 3862060 TI - [Effect of the family environment on the social adaptation of children with a long-term remission of lymphoblastic leukemia. Preliminary report]. PMID- 3862061 TI - [Diffuse cutaneous vasculitis disclosing acute lymphoblastic leukemia]. AB - Biopsy of skin for etiologic evaluation of generalized erythematous eruptions in a 4 1/2 years old child, starting four months ago, led to diagnosis of acute lymphoblastic leukemia. Leukocyte counts five and eight weeks and four months after appearance of eruptions were normal and no blasts were found. A leukocyte count performed simultaneously with biopsy of skin also showed few (less than 10%) blasts. Histologic examination of skin revealed two types of pathologic lesions: a perivascular cuffing of lymphoblasts and a leukocytoclastic type of small vessel vasculitis in other parts. This type of vasculitis which have been reported in association with chronic lymphocytic and hairy cell leukemias, is uncommon in acute lymphoblastic leukemia. PMID- 3862062 TI - Wide range of nursing roles emerges at public hearings. PMID- 3862063 TI - Health care changes impact gerontological nursing care. PMID- 3862064 TI - How healthy is New Jersey? PMID- 3862065 TI - Interventions with impaired nurse practice. PMID- 3862066 TI - The CURN project: uniting research and practice. PMID- 3862067 TI - Criteria for published research. PMID- 3862068 TI - Nursing collaboration. PMID- 3862069 TI - DPT debated. PMID- 3862070 TI - Gerontological nursing: the state-of-the-art. PMID- 3862071 TI - In vitro sensitivity of leukemic clonogenic cells to four anthracyclines (adriamycin, daunorubicin, rubidazone and aclacinomycin) in human acute myeloid leukemia. AB - We used an in vitro clonogenic assay in semi-solid medium to test the sensitivity of human leukemic progenitors to different anthracyclines. Bone marrow leukemic cells of 19 patients with acute myeloid leukemia were plated after exposure to adriamycin (ADR), daunorubicin (DNR), rubidazone (RDZ) and aclacinomycin (ACLA). We obtained a dose-dependent response curve with all anthracyclines, with wide response curve with all anthracyclines, with wide patient to patient variations. In 9 out of 19 cases, in vitro sensitivity to the four drugs correlated (4 sensitive and 5 resistant cases), but in 10 patients the results were discordant, with 8 conflicting results between ADR and the other three anthracyclines, raising the possibility of the absence of cross-resistance between these drugs. PMID- 3862072 TI - [Cytosine-arabinoside in high doses in refractory acute granulocytic leukemia. Apropos of 17 cases]. AB - A total of 17 patients, 6 female and 11 male (age range 13 to 56 years), received high dose Ara-C for treatment of refractory acute myelogenous leukemia. Ara-C was given at 3 g/m2 twice daily for 6 days as a 1 infusion. 1 patient (with induced acute leukemia) was treated directly, two after failure of a chemotherapy schedule containing the usual dose Ara-C, 12 for first relapse and 2 for subsequent relapse. Maximum follow up is 16 months. Beside hematological toxicity, systemic tolerance was good with no neurological of cutaneous effects. Despite preventive corticoid eyewash, ocular complications occurred in 6 cases, mild and resolvable in 5 of them. The immediate results were as follows: 3 deaths during induction (18%); 6 failures (35%); 8 complete remissions (CR) (47%). After primary chemo-resistance (two cases) failure was always noted. In 3 cases, after less than 12 infusions had been given, 2 failures and 1 very short CR were noted. In 2 patients, when doxorubicin was added to Ara-C, we observed 1 death during induction and 1 failure. Of the patients achieving CR 8 were treated by periodic courses with high dose Ara-C and 4 of them relapsed. The longest failure free duration was 11 months. Median survival duration of the 17 patients is 5 months. PMID- 3862073 TI - Hypercalcemia in chronic myelogenous leukemia: evidence for excessive parathyroid hormone secretion. AB - Hypercalcemia was associated with osteolytic bone lesions in a 60-year-old woman with chronic myelogenous leukemia in the accelerated phase. Using highly specific antisera to parathyroid hormone, radioimmunoassays disclosed elevated levels of carboxyl-terminal (53-84) and intermediate (44-68) fragments. In addition, concomitant variations of serum calcium level and leukocyte counts, increased urinary c-AMP excretion, morphological integrity of parathyroid glands, and absence of bone resorbing activity in myeloblast culture supernatants are consistent with the hypothesis that the humoral hypercalcemia was due to the excessive production of PTH. This production may have been ectopic, although no PTH secretion was demonstrated in myeloblast culture supernatants. PMID- 3862074 TI - Regional mapping of two human immunoglobulin V lambda genes and analysis of the V lambda locus in chronic myeloid leukaemia. AB - The human immunoglobulin V lambda locus has been studied in relation to chromosomal translocations involving chromosome 22. DNA probes for two V lambda genes which belong to different subgroups and do not cross hybridize, were used to show that both V lambda genes are located on the Philadelphia chromosome in chronic myeloid leukaemia (CML). Both genes map in band 22q11 to a region that is bounded on the distal side by the breakpoints for CML 9:22 translocations and on the proximal side by the breakpoint for an X:22 translocation. We have found no evidence for rearrangements or amplification of either V lambda gene in CML, in either the chronic or acute phases of the disease. In K562 cells which are derived from the pleural effusion of a patient with Ph1-positive CML, there appears to be no rearrangement of the V lambda genes, but they are both amplified about four times. We have estimated that the minimum size for the amplification unit in K562 cells is 186 kb. PMID- 3862075 TI - [Leukemia and other neoplasms in patients with multiple myeloma]. PMID- 3862076 TI - Marginal seal of a composite resin, Clearfil: a laboratory study. PMID- 3862077 TI - Inhibited set of the surface of addition silicones in contact with rubber dam. PMID- 3862078 TI - Manipulation of cohesive gold foil in dental restorations. PMID- 3862079 TI - Pin-retained base in conjunction with complex pin-and-amalgam restoration. PMID- 3862080 TI - Metabolic myopathies. AB - The most frequent metabolic myopathies of children and adults (glycogenoses; neutral fat myopathies; "mitochondrial" myopathies) are reviewed. In glycogenoses and neutral fat myopathies the most prominent histological feature is represented by a vacuolation of muscle fibres, vacuoles being filled with glycogen or neutral fat. Enzyme defects of glycogenoses are known. In some neutral fat myopathies, an involvement of carnitine metabolism can be found; in many other cases, biochemical investigations have failed to identify the enzyme defect(s), or have demonstrated the contemporaneous involvement of mitochondria ("mitochondrial" myopathy). The large group of "mitochondrial" myopathies is built up of many heterogeneous polygenetic syndromes, the appearance of which signalises only an impaired mitochondrial function due to underlying biochemical defect(s). In these cases, accumulations of mitochondria in muscle fibres, easily recognisable with trichrome stain ("ragged-red fibres") may be found. These mitochondria usually present very peculiar ultrastructural changes ("paracrystalline inclusions"). One of the leading clinical symptoms of metabolic myopathies is represented by myoglobinuria. In every case of "idiopathic" rhabdomyolysis, a metabolic myopathy should hence be suspected. The negative result of histological and enzymehistochemical investigations, does not exclude the presence of a metabolic disorder, however. Research in this field requires a very strong cooperation between morphologists and biochemists. Future therapeutical approaches can in fact only come from and through biochemistry. PMID- 3862081 TI - The trouble shooter: hypersensitivity. PMID- 3862082 TI - Effect of side chain-backbone electrostatic interactions on the stability of alpha-helices. AB - An apparent discrepancy between the observed stability of the C-peptide alpha helix of ribonuclease A and that computed from the Zimm-Bragg parameters sigma and s (obtained by the host-guest technique) is resolved. Side chain-backbone ion dipole interactions play a role in both systems. However, they are averaged out in the random copolymers used to determine sigma and s for charged residues such as glutamic acid but not in the specific-sequence copolymer, namely, the C peptide, where they contribute significantly to the helix stability. In considering a specific-sequence alpha-helix, its intrinsic stabilizing free energy (expressed in terms of sigma and s) must be augmented by position dependent stabilizing long-range electrostatic interactions. PMID- 3862083 TI - Differential expression of the mouse cholecystokinin gene during brain and gut development. AB - Cholecystokinin (CCK) is a neuropeptide found in brain and intestine. In this report, we have isolated a cDNA clone that encodes CCK from a mouse brain cDNA library. This cDNA clone has extensive homology to CCK precursors that have been sequenced previously. Southern blots of genomic DNA probed with this cDNA clone revealed single bands for each of eight different restriction enzymes, all of which could be accounted for by a single genomic clone, suggesting that the CCK gene is present as a single-copy gene in mice. RNA blots, primer extensions, and S1 nuclease protection assays have suggested that the same RNA start site is utilized in brain and in gut. Finally, we have shown, by using RNA blots and a radioimmunoassay specific for CCK, that CCK is expressed at maximum adult levels in intestine at birth but that adult concentrations of CCK and its mRNA are not reached in brain until much later in development. PMID- 3862084 TI - Quantitative structural analysis of eukaryotic ribosomal RNA by scanning transmission electron microscopy. AB - The conformation of 28S ribosomal RNA isolated from baby hamster kidney cells was studied by scanning transmission electron microscopy (STEM) and circular dichroic spectroscopy to establish the conditions under which STEM images of unstained freeze-dried rRNA are a meaningful representation of the conformation of rRNA in solution. We have determined the conformation of 28S rRNA under various buffer conditions, the molecular mass, the mass distribution, and the number of polynucleotide strands within the individual molecules, and the apparent radii of gyration. The 28S rRNA molecule is highly extended in water and becomes compact with increasing ionic strength. However, even in the "reconstitution buffer" (30 mM Tris/HCl/20 mM MgCl2/360 mM KCl, pH 7.6) the compactness does not reach a state in which the rRNA molecule appears structurally similar to the 60S ribosomal subunit. Our approach has a broad application in high-resolution structural studies of nucleic acids and nucleic acid-protein interactions. PMID- 3862085 TI - Regulated expression of mammalian histone H4 genes in vivo requires a trans acting transcription factor. AB - Mouse L cells containing integrated copies of a human histone H4 gene have been obtained by cotransfection with the herpesvirus thymidine kinase gene. Nuclease S1 assays of RNA from several independent cell lines show that the expression of the introduced H4 gene is regulated during the cell cycle. One of these cell lines (line 6-8) contains more than 60 human H4 gene copies per haploid genome and does not express the endogenous mouse histone H4 mRNA. In contrast, the expression of the mouse H2a and H3 mRNAs in this cell line is not perturbed. In cell revertants that have lost the majority of the human H4 gene copies, the expression of the mouse H4 mRNA is restored, demonstrating that the mouse genes remain functional although not expressed. The rate of transcription of the histone H4 genes in clone 6-8 is at least 10-fold greater than that of the parental cell line and it is regulated during traversal of the cell cycle. These results show that the expression of mammalian histone H4 genes involves both a trans-acting transcriptional regulatory factor and an H4-specific activity. We propose that cell cycle regulation of histone gene expression may be effected through subtype-specific transcriptional regulatory proteins. PMID- 3862086 TI - An unusual bovine pancreatic protein exhibiting pH-dependent globule-fibril transformation and unique amino acid sequence. AB - An unusual hitherto unreported protein, extracted in acid from fresh bovine pancreas, has been purified and characterized biochemically. It precipitates in the neutral pH range in the form of uniform double-helical threads, each strand of which is smooth and of uniform diameter, about 7-8 nm. The threads dissolve to a nonviscous solution below pH 3.6 and above pH 9.4, and they reconstitute reversibly in the pH range in between. The monomer in acid has an apparent molecular weight of 17,800 and consists of two disulfide-linked nonidentical polypeptide chains of different lengths. It is rich in aromatic amino acids, particularly tryptophan. There is no significant content of carbohydrate, fatty acid, or bound phosphate. The amino acid sequences of the first NH2-terminal 48 residues of the A chain and 35 residues of the B chain appear to be unique, differing from all other reported animal proteins, including those of the pancreas. Thus far, a function has not been found. PMID- 3862087 TI - Deletions in the 3'-terminal tRNA-like structure of brome mosaic virus RNA differentially affect aminoacylation and replication in vitro. AB - Deletions in cDNA clones covering the 3' 201 nucleotides of brome mosaic virus RNA 3 were produced by S1 nuclease treatment of cloned DNA linearized at several different restriction sites. Transcription of these clones yielded RNAs containing structural alterations in the 3'-terminal tRNA-like structure that is involved in aminoacylation and replication. Replicase template activity, but not aminoacylation activity, was especially sensitive to deletions in arm C, which contains a tyrosyl anticodon. Deletions in arm B were detrimental to aminoacylation, but the proportion of replicase template activity lost depended on the site of the deletion. Removal of arm D had little effect on aminoacylation and, in some instances, resulted in a 2-fold stimulation of replicase template activity. PMID- 3862088 TI - Molecular cloning of an activated human oncogene, homologous to v-raf, from primary stomach cancer. AB - Transfection with high molecular weight DNA from a primary stomach cancer induced foci of transformed NIH 3T3 cells, and the transformed cells were tumorigenic in nude mice. By screening with a human Alu-family probe, we isolated the human DNA sequence from the secondary transformant cells. This transforming sequence encompasses about 60 kilobase pairs and is unrelated to known human transforming genes. Examination of homologies between this sequence and retroviral oncogenes revealed that the human transforming sequence is closely related to the v-raf oncogene of murine transforming retrovirus 3611-MSV. PMID- 3862089 TI - Remarkable homology among the internal repeats of erythroid and nonerythroid spectrin. AB - A cDNA clone for nonerythroid alpha-spectrin was identified by direct immunological screening of a chicken smooth muscle cDNA library. A library prepared in the expression plasmids pUC8 and pUC9 was screened with an antiserum specific for chicken alpha-spectrin. Blots of poly(A)+ RNA from various tissues of chicken and mouse show that the cDNA hybridizes to an 8-kilobase mRNA. The cDNA hybridizes to a single-copy sequence on Southern blots of chicken genomic DNA. The complete nucleic acid sequence of the clone has a single 1419-base open reading frame. The derived amino acid sequence is organized into two partial and three complete 106-amino-acid repeats that show homology to the repeats described for human erythroid alpha- and beta-spectrin. Immunological and biochemical data indicate that chicken nonerythroid and human erythroid alpha-spectrin are two of the more widely diverged members of the spectrin family of proteins. In this respect, the degree of homology found between them was unexpected. Our data suggest a common evolutionary origin for these two alpha-spectrins and allow some predictions concerning spectrin gene structure. PMID- 3862090 TI - Quantitative and qualitative changes in histone gene expression during early mouse embryo development. AB - There are large amounts of histone mRNA present in mouse eggs. These RNAs are rapidly degraded, as are other mRNAs, after fertilization and prior to the second cleavage. During cleavage, the histone mRNA accumulates as the embryo divides. The same sets of histone genes are expressed in eggs and embryos, although there are large qualitative differences in the amounts of particular histone mRNAs. The function of the egg histone mRNA is unknown. The amount of histone mRNA in cleaving and blastocyst embryos is probably sufficient to code for the blastocyst histone proteins. PMID- 3862091 TI - The hemodynamic destruction of intravascular cancer cells in relation to myocardial metastasis. AB - A variety of observations in humans and experimental animals indicate that large numbers of circulating cancer cells are killed in the microvasculature. It is suggested that this occurs when friction or adhesion between individual cancer cells and capillary walls results in an increase of tension in the cancer cell peripheries above a critical level because of (blood) pressure differentials between their free ends. Hemodynamic and anatomic data relating to the myocardial circulation and deformability measurements on four types of rat cancer cells have been reported previously by others. Novel calculations based on these data suggest that the increased tension at the peripheries of cancer cells passing through the myocardial capillaries will exceed the critical levels for rupture. Analysis of autopsy data for solid tumors reveals a low (less than 3%) incidence of myocardial metastases in the absence of lung metastases and a higher (15%) incidence in their presence. One explanation for these observations is that, in the absence of lung metastases, relatively few of the cancer cells enter the coronary arteries from primary tumors with systemic venous drainage because many are retained or destroyed in transit through the pulmonary vasculature, and most of those delivered to the myocardium then suffer hemodynamic destruction. In the presence of pulmonary metastases, large numbers of viable cancer cells are liberated directly into the pulmonary venules and subsequently are delivered to the myocardium without prior exposure to the arterial side of the microcirculation. The combined effects of increased delivery and the protective effects of arrested cells on those preceding them in files along the capillaries account for the higher incidence of myocardial metastases. It is proposed that hemodynamic destruction of circulating cancer cells may be an important underlying cause of metastatic inefficiency, together with other cytocidal mechanisms. PMID- 3862092 TI - On the correlation between HII phase and the contact-induced destabilization of phosphatidylethanolamine-containing membranes. AB - The abundance of phosphatidylethanolamine (PtdEtn) in biological membranes and the capacity of this lipid to sustain nonbilayer structures have been promoted as evidence for a role of PtdEtn in biological fusion processes. To date there has been no direct evidence of a connection between the kinetics of bilayer destabilization and the polymorphism accessible to PtdEtn. We have developed a model system to examine this point directly using the proton-induced destabilization of PtdEtn/cholesterylhemisuccinate unilamellar liposomes. We find that the initial rate of bilayer mixing rapidly increases with temperature and reaches a maximal level just below the HII-phase transition temperature. The leakage from these liposomes rapidly increases, both in rate and extent, within the HII-phase transition temperature range. Of an even greater significance is that at no temperature is there any mixing of aqueous contents within the liposomes. Thus, these lipids can begin to undergo the lamellar- to HII-phase transition at the stage of two apposed liposomes. However, the nonbilayer structures formed do not cause fusion--i.e., the concomitant mixing of aqueous contents. PMID- 3862093 TI - Nerve growth factor rapidly induces ornithine decarboxylase mRNA in PC12 rat pheochromocytoma cells. AB - The mechanism by which nerve growth factor (NGF) stimulates ornithine decarboxylase (OrnDCase; EC 4.1.1.17) activity in the rat pheochromocytoma cell line PC12 was investigated. As demonstrated previously, NGF rapidly induces OrnDCase activity in a dose-dependent manner, with maximal enzymatic activity at 4-6 hr after exposure to NGF. Activity subsequently returns to near basal levels. A cloned OrnDCase cDNA was used to analyze the levels of OrnDCase RNA. In response to NGF administration, OrnDCase RNA levels were induced. The time course of the OrnDCase RNA induction paralleled that of the enzyme activity induction, and the magnitude of both inductions was quantitatively the same. Increased concentration of OrnDCase RNA was clearly detected at the earliest time point examined, 2 hr. No change was observed in the size of OrnDCase RNA. The dose response curves for both RNA and enzyme activity inductions were also similar. Thus, increased OrnDCase RNA levels fully account for, and are responsible for, the induction of activity. Further, one-third of the OrnDCase RNA induction was unaffected by cycloheximide treatment but was fully blocked by actinomycin D treatment, suggesting that NGF acts through at least two mechanisms to mediate the OrnDCase induction. The first mechanism is cycloheximide insensitive and the second is mediated through an event requiring ongoing protein synthesis. Both mechanisms require ongoing transcription, as evidenced by the complete sensitivity of the induction process to actinomycin D. PMID- 3862094 TI - Isolation of tumor-secreted products from human carcinoma cells maintained in a defined protein-free medium. AB - A protein-free synthetic cell-growth medium has been defined that permits long term survival (greater than 120 days) of an established human colon tumor cell line, HT-29. Viability is dependent upon both the concentration of L-glutamine in the medium and the cell density at the time of initial transfer into it. Cell proliferation is minimal, thus obviating the necessity for subculturing. HT-29 adenocarcinoma cells maintained in large-scale culture with this medium continue to secrete the established colon tumor marker carcinoembryonic antigen as well as growth factors and lysozyme. These and, potentially, other important tumor derived products can therefore be generated continuously in such cultures so that they can be isolated from a conditioned medium free of contaminating serum and protein supplements. PMID- 3862095 TI - In vitro screening assay for teratogens using growth inhibition of human embryonic cells. AB - We have tested 35 teratogenic and 20 nonteratogenic chemicals or drugs in a short term, in vitro assay that identifies teratogens by their ability to inhibit growth of an established line of human embryonic palatal mesenchymal cells. Only those chemicals that exhibited a dose-dependent inhibition of growth at concentrations less than 1 mM were classified as inhibitory. An Aroclor-induced rat liver S-9 system was effective in metabolizing cyclophosphamide to its teratogenic form in culture. We suggest that this assay, along with the complementary tumor cell-attachment assay of Braun et al. [Braun, A. G., Emerson, D. J. & Nichinson, B. B. (1979) Nature (London) 282, 507-509] may be useful as a short-term in vitro battery for assessment of the teratogenic potential in environmental agents and to prioritize those chemicals which merit further testing in vivo. PMID- 3862096 TI - Color categorization: a possible concordance between genes and culture. AB - A marked correspondence is found to relate the categories of infant wavelength discrimination and the ethnographic distribution of adult color terms. The structure of the infant category system accounts for at least 75% of the variance in the world ethnographic categories (P less than 0.001). Such a correspondence is predicted to be favored by natural selection when perceptual mechanisms interact with their associated cultural traits. PMID- 3862097 TI - Gene-culture coevolution: models for the evolution of altruism with cultural transmission. AB - Models of sexual haploids under kin selection are constructed. The trait of altruism is transmitted vertically from parent to child, but not in a strictly genetic manner. Two systems of altruism are considered: parent-to-offspring and sib-to-sib. In the former case it is shown that even when Hamilton's conditions for the success of genetically determined altruism are met, genes that increase the transmission of altruism may not invade the population. With sib-to-sib altruism, such genes will always increase initially. PMID- 3862098 TI - Complete structure of the alpha B-crystallin gene: conservation of the exon intron distribution in the two nonlinked alpha-crystallin genes. AB - We isolated bovine complementary DNA clones for the alpha A- and alpha B crystallin subunits. The alpha B cDNA clone was used to isolate an alpha B crystallin gene. This gene, derived from hamster, occurs as a single copy in the genome and is 3.2 kilobases long. The coding sequences are spread on three exons with a total length of 709 nucleotides. The exon-intron distribution of the hamster alpha B-crystallin gene is similar to that of the alpha A-crystallin gene except for the 69 nucleotides that specify the 23 "insert" residues of the alpha AIns chain by means of differential splicing. The 3' noncoding region of the alpha B mRNA (140 bases), which is short compared with the alpha A mRNA (520 bases), shows a remarkable homology between calf and hamster. Both alpha crystallin cDNA clones have been used to assign the chromosomal location of the corresponding human genes with the aid of somatic cell hybrids. It is shown that the single-copy alpha A- and alpha B-crystallin genes are located on different chromosomes. PMID- 3862099 TI - Expression of genes transferred into monocot and dicot plant cells by electroporation. AB - We have developed a general method for electrically introducing DNA into plant cells. Gene transfer occurs when a high-voltage electric pulse is applied to a solution containing protoplasts and DNA. Carrot protoplasts were used as a model system to optimize gene-transfer efficiency, which was measured 24-48 hr after electroporation by the amount of chloramphenicol acetyltransferase activity resulting from the expression of the introduced chimeric plasmids. Gene-transfer efficiency increased with the DNA concentration and was affected by the amplitude and duration of the electric pulse as well as by the composition of the electroporation medium. Our optimized gene-transfer conditions were effective when applied to tobacco and maize protoplasts, demonstrating that the method is applicable to both monocot and dicot protoplasts. PMID- 3862100 TI - A mutation in the beta-globin gene detected in the progeny of a female mouse treated with ethylnitrosourea. AB - A mouse with a variant hemoglobin was discovered during electrophoretic screening of (C57BL/6J X DBA/2J)F1 progeny of females treated with ethylnitrosourea. The variant trait was transmitted as a simple Mendelian alternate at the Hbb locus in all crosses except those involving the original carrier of the mutation. The proband mouse which received the mutation directly from the mutagen-treated parent was a germinal mosaic for the mutant and normal Hbbs alleles. The mutant allele was designated Hbbs2. The mutant haplotype specifies both an electrophoretically fast hemoglobin band and a hemoglobin band in the normal beta single hemoglobin position. Thus, the mutation has altered one of the tandemly duplicated genes at the Hbbs locus. A comparison of the relative concentrations of the two hemoglobins in Hbbs2 mice demonstrates preferential expression of the mutant gene, possibly analogous to the enhanced expression of Hbbdmaj in the Hbbd haplotype. Analysis of the amino acid sequence of the variant beta-globin revealed that the valine at position 60 was changed to glutamic acid. The simplest mutation mechanism for such an alteration is an A X T----T X A transversion. PMID- 3862101 TI - Chromosome localization of the gene for human terminal deoxynucleotidyltransferase to region 10q23-q25. AB - Complementary DNA clones representing the 3' half, the 5' half, and the entire coding region of the human terminal deoxynucleotidyltransferase gene (TdT; DNA nucleotidylexotransferase, nucleosidetriphosphate: DNA deoxynucleotidylexotransferase, EC 2.7.7.31) were used to screen a panel of mouse X human somatic cell hybrid DNAs to determine the chromosomal location of the human TdT gene. The results of the Southern transfer analysis of hybrid DNAs indicate that the gene for TdT is located on human chromosome 10. The in situ hybridization technique was then used to further localize the gene for TdT to region q23-q25 of human chromosome 10. PMID- 3862102 TI - Microdissection and microcloning of the mouse X chromosome. AB - A wild mouse (CD) karyotype in which all the chromosomes bar the X, 19, and Y, are fused as metacentrics has been used for the microdissection and microcloning of a specific mouse X chromosome region. Dissection of a proximal region of the X chromosome encompassing the genetic loci Hprt to Tfm and including mdx has yielded 650 clones. A number of the recovered clones containing sizable inserts have been confirmed as X chromosome specific. This X chromosome bank of clones provides a start point for the isolation of the mdx locus. It is now clear that microdissection and microcloning can be applied to all mouse chromosomes, including the X chromosome, yielding premapped banks of clones that will greatly aid in the isolation and characterization of important genetic loci. PMID- 3862103 TI - Intron sequences reveal evolutionary relationships among major histocompatibility complex class I genes. AB - The multigene family of the class I histocompatibility antigens is unusual in that allelic and intergenic differences often are of equal magnitude. It has been suggested that this is due to gene conversion events, which would produce allelic variation but at the same time reduce intergenic differences. We compared the sequences of 11 class I genes in an attempt to elucidate the evolutionary history of this gene family. Our analysis shows that the intron sequences can be used to establish the order of divergence of various class I genes from each other. The results obtained agree with the order of divergence deduced from major insertion and deletion events. It appears that certain genes in the murine TL antigen encoding region diverged very early from the H-2 and Qa-2,3 genes. The latter can be subgrouped as H-2 and Qa-2,3 genes by both sequence homology and insertion patterns. In contrast to the introns, exon sequences provide less information on evolutionary relationships. Thus, these analyses are consistent with the view that concerted evolution due to gene conversion occurs preferentially in exons. PMID- 3862105 TI - Immunization with Leishmania receptor for macrophages protects mice against cutaneous leishmaniasis. AB - The Leishmania major receptor for macrophages is a lipid-containing glycoconjugate that is recognized by the monoclonal antibody WIC-79.3. When L. major promastigotes were incubated with Fab fragments of WIC-79.3 prior to injection into genetically susceptible mice, their infectivity was decreased. Fab fragments from an irrelevant control antibody of the same class had no effect. The L. major glycolipid was purified from detergent-solubilized promastigotes by affinity chromatography on immobilized WIC-79.3 and used to vaccinate mice that are genetically resistant or susceptible to disease. Genetically resistant mice could be protected totally from cutaneous disease with as little as 5 micrograms of glycolipid. A high but not absolute level of resistance was also induced in the susceptible mice, in which the disease is otherwise fatal. No protection was obtained with the carbohydrate fragment of the glycolipid alone or by injection of the glycolipid in the absence of adjuvant. Genetically susceptible mice, immunized and protected from disease as a result of multiple injections of live avirulent cloned promastigotes of L. major, produced antibodies to the glycolipid of L. major. No antibodies were detected in serum from chronically diseased mice. The data suggest that this functionally important antigen of L. major is a candidate vaccine against cutaneous leishmaniasis. PMID- 3862104 TI - Complete cDNA sequence of the fourth component of murine complement. AB - We have used the method of Okayama and Berg to construct cDNA clones that span the entire length of the fourth component of murine complement (C4) from mouse strain B10.WR. The cDNA sequence spans 5372 nucleotides and encodes a pre-pro-C4 molecule 1738 amino acids in length; it includes 56 and 99 untranslated bases at the 5' and 3' ends, respectively, of the C4 mRNA. The deduced pre-pro-C4 molecule includes a 19 amino acid signal peptide and two highly basic interchain regions that presumably are excised during maturation of the protein. The nucleotide sequence shows 79% identity with the human C4 cDNA sequence over the length of the protein-coding region. A comparison of the B10.WR C4 sequence with those of C4 and sex-limited protein (Slp) from mouse strain FM (i) suggests that the difference in hemolytic activity between the C4 proteins from B10.WR and FM is due to structural changes distant from both the C1 cleavage site and the internal thioester site and (ii) raises the possibility that the C4 gene from B10.WR has undergone genetic exchange with its adjoining Slp genes. PMID- 3862106 TI - Structure and expression of genes encoding murine Qa-2 class I antigens. AB - DNA structural analysis of the Qa region in two BALB/c mouse substrains with different Qa-2 phenotypes reveals that a deletion of DNA has occurred in BALB/cBy (Qa-2-) mice relative to BALB/c (Qa-2+) mice. We propose that this deletion arises from unequal crossing-over and recombination between adjacent BALB/c class I genes and results in the generation of a hybrid class I gene in BALB/cBy mice. Furthermore, we suggest that this is a direct cause of the change in Qa-2 phenotype. Further support for this model was obtained from transfection experiments in which cloned genes from the equivalent part of the Qa region in C57BL/10 mice were introduced into L cells. Four C57BL/10 genes, arranged in two almost identical pairs, encode polypeptides that are precipitated from lysates of transfectants with anti-Qa-2/3 antiserum. Although loss of one pair of these genes in BALB/c mice has no qualitative effect on Qa-2 phenotype, the loss of both pairs of genes via gene fusion leads to the loss of the Qa-2+ phenotype in BALB/cBy mice. PMID- 3862107 TI - Rat cells infected with anemia-inducing Friend leukemia virus contain integrated replication-competent but not defective proviral genomes. AB - The integrated proviral DNA in five murine cell lines transformed by the anemic strain of Friend leukemia virus (FLV-A) was examined by Southern hybridization to a cloned Friend virus (F-MuLV) probe. Kpn I fragments 9 kilobases (kb) and 5.7 kb long were observed for each cell line. However, the number of copies of each fragment in the cell genome varied according to the cell type. As compared to the adherent epithelioid cell lines, the anchorage-independent erythroleukemic cell lines contained more copies of the 5.7-kb fragment than of the 9-kb fragment, suggesting that the former may be biologically significant and perhaps related to the growth of erythroid cells. The presence of Kpn I fragments of the same sizes, albeit in fewer copies, in normal mouse spleen DNA made it difficult to distinguish exogenous virus from endogenous viral sequences. Therefore, rat 3Y1 cells, which contained no murine endogenous viruses, were infected with FLV-A stock virus prepared directly from the spleens of leukemic mice. Only the 9-kb Kpn I fragment, representing replication-competent Friend virus component, was detected in the infected rat cell DNA. No hybridization was observed to a 0.6-kb fragment of the spleen focus-forming virus env gene that is specific for xenotropic and dual-tropic mink cell focus-forming viruses. Since the virus synthesized by the infected rat cells was leukemogenic in adult mice, these data suggest that the wild-type FLV-A is replicative and fully pathogenic in the absence of other competent virus components. PMID- 3862108 TI - Altered steady-state ratio of type I/III procollagen mRNAs correlates with selectively increased type I procollagen biosynthesis in cultured keloid fibroblasts. AB - Regulation of collagen gene expression was studied in fibroblast cultures established from patients with keloids, fibrotic lesions of the skin. In selected keloid fibroblast cultures, an overproduction of type I procollagen was observed. This increase was accompanied by a parallel increase in type I procollagen specific mRNA levels, as detected by dot-blot and RNA transfer hybridizations, without concomitant change in type I procollagen gene copy number. At the same time, type III procollagen mRNA levels were unaltered, resulting in markedly elevated type I/III procollagen mRNA ratios. Thus, keloid fibroblasts offer a unique model to study the independent regulation of the gene expression of two genetically distinct procollagens, type I and type III. PMID- 3862109 TI - Endothelial cell-derived chemotactic activity for mouse peritoneal macrophages and the effects of modified forms of low density lipoprotein. AB - Cultured rabbit and bovine aortic endothelial cells generated chemotactic activity for mouse resident peritoneal macrophages, demonstrable in the conditioned medium. This chemotactic activity was heat stable and was not extracted into chloroform/methanol. It was inhibited by addition of endothelial cell-modified low density lipoprotein (EC-modified LDL), a form of LDL shown previously to contain peroxidized lipids, increased lysophosphatidylcholine, and partially degraded apoprotein B. The chemotactic activity was also inhibited by LDL previously oxidized in the absence of cells with 5 microM Cu2+. Inhibitory activity was present in the lipid extract of EC-modified LDL but not in that of native LDL, presumably representing peroxidized lipid components. EC-modified LDL also inhibited the chemotactic activity of zymosan-activated serum. Because EC modified LDL is taken up in part by way of the acetyl-LDL receptor, the effects of acetyl-LDL were tested. Rather than inhibiting chemotaxis, acetyl LDL showed intrinsic positive chemotactic activity as did also fucoidin and polyinosinic acid, both of which also interact with the acetyl-LDL receptor. These studies suggest mechanisms by which macrophages may be recruited into the subendothelial space by endothelial cell-derived chemotactic factors or by natural polyanions structurally related to fucoidin or polyinosinic acid and then become "trapped" there because of the inhibitory effects of peroxidized lipid components in modified forms of LDL. PMID- 3862110 TI - Predominance of hemodynamic rather than metabolic factors in the pathogenesis of diabetic glomerulopathy. AB - Six groups of Munich-Wistar rats underwent micropuncture study 2-10 weeks and morphologic studies 11-13 months after induction of streptozotocin diabetes or after sham treatment. Diabetic rats received diets containing 6% (group D6), 12% (D12), or 50% protein (D50) and were maintained under similar conditions of moderate hyperglycemia by daily injections of ultralente insulin. Age- and weight matched normal control rats were also given 6% (Group N6), 12% (N12), or 50% protein (N50). Kidney weight, whole-kidney and single-nephron glomerular filtration rate, glomerular plasma flow, and mean glomerular transcapillary hydraulic pressure difference were higher in D50 rats than in all other groups and predisposed this group to marked and progressive albuminuria. Likewise, histological examination of the kidneys disclosed areas of sclerosis in 19.6% of glomeruli in D50 rats; the frequency of such lesions was less than 2.5% in all other groups. These findings indicate that the metabolic disorder seen in stable, moderately hyperglycemic diabetic rats does not lead to glomerulopathy as long as elevations in glomerular pressures and flows are prevented. PMID- 3862111 TI - Quantal mechanism of long-term synaptic potentiation. AB - Intracellular recordings were used to demonstrate the occurrence and to analyze the microphysiology of long-term synaptic potentiation (LTP) in the crayfish opener neuromuscular synapse. Brief stimulation of the single excitor motor axon enhanced the amplitudes of subsequent postsynaptic potentials for several hours. Three methods of quantal analysis were used to evaluate the mechanism responsible for LTP. The results of all three methods supported predictions of the hypothesis that LTP results from a presynaptic mechanism that increases the average of neurotransmitter quanta evoked by nerve impulses in the excitor axon. PMID- 3862112 TI - Contrast and assimilation in the perception of brightness. AB - The rapid estimation of the brightness of objects is one of the nervous system's major visual tasks. Exactly how the eye and brain perform this basic task is still not understood. Two mechanisms that contribute to human perception of the brightness of objects have been identified previously: (i) the visual response to physical contrast and (ii) assimilation. Use of a unique visual display device allowed us to measure the relative importance of these two mechanisms. The present results reveal that assimilation is about half as effective as physical contrast in determining the apparent brightness of objects. These results imply that previous theories of vision--for instance, the retinex theory--will have to be revised; the importance of physical contrast must be weighted more strongly. PMID- 3862113 TI - Differential effects of electrical stimulation of sciatic nerve on metabolic activity in spinal cord and dorsal root ganglion in the rat. AB - Electrical stimulation of the proximal stump of the transected sciatic nerve produces a frequency-dependent activation of glucose utilization, measured with the autoradiographic deoxy [14C]glucose method, in the dorsal horn of the spinal cord but produces no change in glucose utilization in the dorsal root ganglion cells. These results suggest that axon terminals and not the cell bodies are the sites of enhanced metabolic activity during increased functional activity of this pathway. PMID- 3862114 TI - Changes in cell volume measured with an electrophysiologic technique. AB - Epithelial cells of the gallbladder of Necturus maculosus were loaded with tetramethylammonium (Me4N+) by transient exposure of the apical (lumen-facing) surface to a solution of high Me4N+ concentration containing also the polyene antibiotic nystatin. Upon removal of nystatin, in the continued presence of Me4N+, spontaneous restoration of the native ionic permeability of the apical cell membrane was observed. At this time, external Me4N+ was removed; intracellular [Me4N+] measured with ion-sensitive microelectrodes was 2-15 mM and remained unchanged for several hours. Changes in cell volume were estimated from the changes in intracellular [Me4N+] produced by alterations in the osmolality of the mucosal bathing solution. Assuming that such changes are caused entirely by water fluxes across the apical membrane, the minimum value of its hydraulic permeability coefficient (Lp) was 1-3 X 10(-3) cm.sec-1.(osmoles/kg)-1, suggesting that an osmolality difference across the apical membrane as small as 1 3 milliosmoles/kg could explain the average rate of transepithelial water transport. These results agree with optical measurements [Persson, B. O. & Spring, K. R. (1982) J. Gen. Physiol. 79, 481-505]. The effective thickness of the apical unstirred layer was estimated from the time courses of both the apical membrane voltage and the response of an extracellular K+-sensitive microelectrode to an increase in [K+] in the mucosal bath. Since changes in concentration of the osmotically active solute at the membrane surface were thus shown to be significantly delayed by diffusion, the Lp value, calculated assuming a step change in osmolality, is an underestimate. PMID- 3862115 TI - Transformation of prostaglandin D2 to 9 alpha, 11 beta-(15S)-trihydroxyprosta (5Z,13E)-dien-1-oic acid (9 alpha, 11 beta-prostaglandin F2): a unique biologically active prostaglandin produced enzymatically in vivo in humans. AB - In vitro studies examining the metabolic transformation of prostaglandin D2 (PGD2) by human liver were conducted. PGD2 was found to be converted by a NADPH dependent enzyme in the 100,000 X g supernatant of human liver exclusively to a single more polar compound that had a mass spectrum essentially the same as that of prostaglandin F2 alpha (PGF2 alpha). However, this compound could be chromatographically separated from PGF2 alpha and failed to form a butylboronate derivative. The structure of this compound was established as 9 alpha, 11 beta (15S)-trihydroxyprosta-(5Z, 13E)-dien-1-oic acid (9 alpha, 11 beta-PGF2) by comparison of its chromatographic and mass spectral characteristics with authentic 9 alpha, 11 beta-PGF2. This compound was found to be biologically active by demonstrating increases in blood pressure in rats in a dose-related fashion following intravenous administration. By using a mass spectrometric assay, levels of this compound in plasma and urine from a normal volunteer were 6 pg/ml and 982 ng/24 hr, respectively. In a patient with systemic mastocytosis associated with overproduction of PGD2, urinary excretion of 9 alpha, 11 beta-PGF 2 was 6634 ng/24 hr and a circulating plasma level as high as 490 ng/ml was found during a severe episode of systemic mast cell activation. 9 alpha, 11 beta-PGF2 is structurally a unique prostaglandin, is enzymatically formed, is produced in vivo in humans, and is biologically active. PMID- 3862116 TI - Nucleotide sequence of an unusual regionally expressed silkmoth chorion RNA: predicted primary and secondary structures of an architectural protein. AB - We have sequenced DNA clones corresponding to the entire coding and 5' untranslated regions and almost all of the 3' untranslated region of a silkmoth chorion RNA which is expressed largely in a subpopulation of follicular epithelial cells (aeropyle crown region). This RNA encodes the E1 protein, one of two components of the prominent "filler" that helps mold the shape of aeropyle crowns. The conceptually translated E1 sequence reveals an alternation in hydrophobic and hydrophilic stretches of amino acids that correlates with certain predictions about its secondary structure. E1 is unusual in revealing no sequence homology with other known chorion sequences and in having an unusually long 3' untranslated region. Sequence analysis of the 5' end of the E1 gene has identified an intron near the end of the signal peptide-encoding region, a feature shared with other chorion genes. PMID- 3862117 TI - Perturbation of maintenance and de novo DNA methylation in vitro by UVB (280-340 nm)-induced pyrimidine photodimers. AB - The effect of pyrimidine photodimers on transmethylation reactions catalyzed by a highly purified rat liver DNA (cytosine-5-)-methyltransferase (EC 2.1.1.37) that exhibits maintenance and de novo methylation activities was studied in vitro, using the viral substrates M13 mp9 replicative form (RF) DNA and the hemimethylated analog formed from primed synthesis of phage DNA in the presence of 2'-deoxy-5-methylcytidine 5'-triphosphate. These DNAs were irradiated with UVB (280-340 nm) at 900-3600 J/m2 in the presence of the triplet-state sensitizers acetone or 3-dimethylaminopropiophenone. Under these conditions of irradiation, which approximate solar UV, pyrimidine cyclobutane photodimers were introduced without producing any evidence of single-strand breaks or alkali-sensitive sites [i.e., no (6-4)pyrimidine-pyrimidone photoproducts]. This was confirmed by gel analysis, a T4 UV endonuclease nicking assay specific for cyclobutane-type dimers, and HPLC analysis of the photoproducts. The methylation of irradiated templates by DNA methyltransferase was inhibited in an approximately linear fashion as a function of increasing UVB dose. This inhibition was correlated with the number of lethal photoproducts detected by the simultaneous measurement of the surviving fraction of infectious phage DNA. For approximately the same number of pyrimidine cyclobutane photoproducts introduced, de novo methylation activity was approximately 2-fold more sensitive than the maintenance mode of methylation. The ability of these putatively carcinogenic, pyrimidine photoproducts to inhibit DNA methylation suggests a common mechanism of action with several chemical carcinogens that are known to modify bases. PMID- 3862118 TI - Cloning and sequence analysis of a cDNA encoding porcine mitochondrial aspartate aminotransferase precursor. AB - The primary structure of pig mitochondrial aspartate aminotransferase (mAspATase; L-aspartate:2-oxoglutarate aminotransferase, EC 2.6.1.1) precursor was deduced from its cDNA sequence. A library of cDNA clones was constructed from pig liver poly(A)+ RNA by applying the vector/primer method of Okayama and Berg [Okayama, H. & Berg, P. (1982) Mol. Cell. Biol. 2, 161-170]. The library was screened for pig mAspATase sequences by using a mixture of eight oligodeoxyribonucleotides as a probe. The sequences of the probe were deduced from the known amino acid sequence of pig mAspATase residues 196-201. Two recombinant plasmids containing inserts of about 2500 and 2600 base pairs were selected for sequence analysis. The amino acid sequence predicted from the cDNA sequence shows that the pig mAspATase precursor consists of the mature enzyme of 401 amino acid residues and an amino-terminal segment of 29 amino acid residues called the "presequence" that contains four basic amino acid residues, no acidic residues, and no hydrophobic amino acid stretch. The sequence of this 29-amino acid mAspATase precursor segment was compared with the presequences of other mitochondrial enzymes. PMID- 3862119 TI - Transcription of the human hsp70 gene is induced by serum stimulation. AB - We have examined the expression of the heat shock protein (hsp70) gene in human cells. The transcription of the hsp70 gene and accumulation of cytoplasmic hsp70 mRNA is induced by serum stimulation. Populations of HeLa cells and human embryonic kidney cells (cell line 293) were serum starved. Upon serum stimulation, the level of hsp70 mRNA transiently increases between 12 and 18 hr to a 10-fold higher level. The increased levels of hsp70 mRNA can be accounted for by a 10- to 15-fold increase in the rate of transcription of the hsp70 gene. When cells were serum-stimulated in the presence of an inhibitor of DNA synthesis, 1-beta-D-arabinofuranosylcytosine (araC), the levels of hsp70 mRNA were induced to only 20% of the maximal level detected in the absence of the inhibitor. This suggests that the expression of the hsp70 gene is coupled to DNA synthesis. The cloned human hsp70 gene contains regulatory sequences that confer serum-stimulated transcriptional control. The endogenous hsp70 gene and the transfected chimeric gene containing sequences upstream of the hsp70 gene fused to bacterial chloramphenicol acetyltransferase are both temporally expressed in stable transfectants of cell line 293 cells. The endogenous hsp70 mRNA and the chimeric mRNA reach maximum levels 12-18 hr after serum stimulation. PMID- 3862120 TI - Human placental alkaline phosphatase in liver and intestine. AB - Three distinct forms of human alkaline phosphatase, presumably isozymes, are known, each apparently associated with a specific tissue. These are placental, intestinal, and liver (kidney and bone). We have used a specific immunoassay and HPLC to show that placental alkaline phosphatase is also present in extracts of liver and intestine in appreciable amounts. PMID- 3862121 TI - (Glu62, Ala30, Tyr8)n serves as high-affinity substrate for tyrosylprotein sulfotransferase: a Golgi enzyme. AB - Tyrosylprotein sulfotransferase, the enzyme catalyzing the sulfation of proteins on tyrosine residues, was characterized by using the acidic polymer containing tyrosine (Glu62, Ala30, Tyr8)n (referred to as Glu,Ala,Tyr) as exogenous "protein" substrate. After subcellular fractionation of a bovine adrenal medulla homogenate, tyrosylprotein sulfotransferase activity was found to be highest in fractions enriched in Golgi membrane vesicles. Tyrosylprotein sulfotransferase required the presence of a nonionic detergent for sulfation of exogenous Glu,Ala,Tyr, indicating an orientation of the catalytic site of the enzyme toward the Golgi lumen. Tyrosylprotein sulfotransferase was solubilized by Triton X-100, suggesting that the enzyme was tightly associated with the Golgi membrane, possibly as an integral membrane protein. The apparent Golgi localization of tyrosylprotein sulfotransferase was supported by the observation that tyrosine sulfation of proteins in intact cells was blocked by monensin and was in line with previous observations that all tyrosine-sulfated proteins known so far are secretory. Glu,Ala,Tyr was found to have a very high affinity for tyrosylprotein sulfotransferase (apparent Km, 300 nM), similar to that reported for certain tyrosylprotein kinases. While this may suggest some similarity between these enzymes, the Golgi localization of tyrosylprotein sulfotransferase segregates tyrosine sulfation from the sites of tyrosine phosphorylation of proteins in the intact cell. If, however, tyrosylprotein sulfotransferase was allowed to react with cytoplasmic proteins by using a nonionic detergent, tyrosine sulfation of tubulin was observed. PMID- 3862122 TI - Efficient insertion of genes into the mouse germ line via retroviral vectors. AB - We present a general strategy for the efficient insertion of recombinant retroviral vector DNA into the mouse germ line via infection of preimplantation mouse embryos. Transgenic mice were generated that harbor a replication-competent recombinant retrovirus (delta Mo + Py M-MuLV) that lacks the Moloney murine leukemia virus (M-MuLV)-type enhancer sequence in the long terminal repeat (LTR). Instead, the LTR contains an enhancer element that permits polyoma virus F101 to grow in undifferentiated F9 embryonal carcinoma cells. Expression studies in different tissues of animals transgenic for delta Mo + Py M-MuLV indicate possibilities to target and modulate expression of retroviral recombinants in mice via their LTR enhancer sequences. In addition, 16 transgenic mice were generated that harbor proviral DNA of a defective recombinant retrovirus carrying a mutant dihydrofolate reductase gene. PMID- 3862123 TI - Visualization of the protein associations in the erythrocyte membrane skeleton. AB - We have obtained clear images of the erythrocyte membrane skeleton from negatively stained preparations that originate directly from the intact cell but in which the spectrin meshwork is artificially spread to allow close inspection. Our procedure requires less than 2 min at 5 degrees C in phosphate buffers. We find 200-nm-long spectrin tetramers crosslinked by junctional complexes. Each junction contains a regular 37-nm rod, probably an actin oligomer of approximately 13 monomers. Densities appear at variable places in the meshwork but distinct globules occur with great frequency 78 nm from the spectrin tetramer's junctional insertion end, very close to the known binding site for ankyrin. Most frequently, five or six spectrin tetramers insert into each junction, producing a meshwork that displays remarkably regular long range order. PMID- 3862125 TI - Cystic fibrosis decreases the apical membrane chloride permeability of monolayers cultured from cells of tracheal epithelium. AB - The tracheal mucosa from a 12-year-old girl was digested with collagenase 4 hr after her death from cystic fibrosis. Forty million viable cells were obtained. The cells, plated at 10(6) per cm2 onto four Nuclepore filters coated with human placental collagen, formed confluent monolayers after 1 day. Their ultrastructure was similar to that of normal human cells. They were studied in conventional Ussing chambers or with intracellular microelectrodes on days 5-7 after plating. The monolayers displayed resistance of 380 +/- 50 omega X cm2 and short-circuit current (Isc) of 1.8 +/- 0.4 microA X cm-2. This resistance is similar to that obtained for dog or normal human monolayers. The Isc is less than normal human (approximately 3 microA X cm-2) or dog (approximately 10 microA X cm-2) cells. The cystic fibrosis cells resembled normal monolayers in that serosal ouabain and mucosal amiloride inhibited Isc, while mucosal ouabain or serosal amiloride had no effect. They differed from normal human or dog cells in that Isc was not inhibited by bumetanide and the stimulation of Isc by isoproterenol or prostaglandin E2 was greatly reduced or abolished. Addition of isoproterenol depolarized apical membrane potential (psi a) and decreased fractional resistance (fR) in normal human and dog but had no effect on psi a or fR in cystic fibrosis cells. Reduction of mucosal chloride from 120 to 5 mM by replacement with gluconate increased fR of dog and normal human monolayers and depolarized psi a by 22 (dog) or 30 (human) mV. In cystic fibrosis monolayers, chloride replacement hyperpolarized psi a by 2 mV and had little effect on fR. These results suggest that the primary defect in cystic fibrosis is reduced apical membrane chloride conductance. PMID- 3862126 TI - Change of karyoskeleton during spermatogenesis of Xenopus: expression of lamin LIV, a nuclear lamina protein specific for the male germ line. AB - Lamins are the major constituent proteins of the nuclear lamina. In the frog, Xenopus laevis, they are the products of a multigene family whose expression can be correlated to certain routes of cell differentiation. For example, lamins LI (Mr, 72,000) and LII (Mr, 68,000) is expressed, together with LI/LII, in certain highly differentiated cell types such as neurons and muscle cells and is the only lamin present in diplotene oocytes. Here we report the identification by means of two monoclonal antibodies of a fourth lamin (LIV) of Mr 75,000, which is expressed specifically during the later stages of spermatogenesis. In the seminiferous tubules, Sertoli cells contain LI/LII and LIII whereas, among the spermatogenic cells, spermatogonia contain only LI and LII. In contrast, in spermatids and sperm cells these lamins are completely replaced by lamin LIV. Primary spermatocytes are negative with both antibodies, indicating that a switch in the expression of lamins occurs early in spermatogenesis. Lamin LIV is distributed in patches along the nuclear envelopes of elongated spermatids and sperm cells rather than in the characteristic continuous lamina pattern found in most other cells. We hypothesize that the specific expression of lamin LIV is related to the conspicuous changes of nuclear architecture and chronmatin composition that are known to take place during the late stages of sperm development. PMID- 3862124 TI - A possible mechanism of psoralen phototoxicity not involving direct interaction with DNA. AB - Psoralens in combination with ultraviolet light (UVA; 320-400 nm) are used in the photochemical treatment of a variety of skin diseases including vitiligo, a skin depigmentational disorder, and psoriasis, a disease of accelerated epidermal cell proliferation. Although it is generally assumed that the major site of action of the psoralens is DNA, we have obtained evidence that another site may be the primary target for these compounds. We have identified specific, saturable, high affinity binding sites for 8-methoxypsoralen on HeLa cells and have detected specific binding of 8-methoxypsoralen to four other human cell lines and five mouse cell lines. In HeLa cells, specific binding is reversible and independent of the ability of the compound to intercalate into DNA. In addition, binding sites become covalently modified by the psoralen after UVA exposure. Specific binding of 8-[methoxy-3H]methoxypsoralen constitutes 79% of the label bound to the cells. Scatchard analysis indicated two classes of psoralen binding sites: high-affinity sites with a Kd of 19 X 10(-9) M (1.8 X 10(5) sites per cell) and low-affinity sites with a Kd of 4 X 10(-6) M (7.1 X 10(6) sites per cell). Four structurally related psoralen analogs block 8-methoxypsoralen binding in a manner that parallels their biological activity. Based on these findings, we hypothesize that specific binding sites for psoralens on mammalian cells mediate, at least in part, psoralen-induced phototoxicity. PMID- 3862127 TI - The formation of fenestrations and channels by capillary endothelium in vitro. AB - Microvascular endothelial cells isolated from fenestrated capillaries have been shown to form tubes in vitro, thereby demonstrating that they retain the ability to express some degree of their in vivo differentiated phenotype. However, some of their physiologically important structural features, such as transendothelial openings (i. e., diaphragmed fenestrations and transendothelial channels) are lost or are greatly reduced in number. In this study, cloned bovine adrenal cortex endothelial cells were cultured on plastic or on a basal lamina produced by Madin-Darby canine kidney (MDCK) cells for up to 17 days postconfluence. All cultures were then routinely fixed and processed for electron microscopic morphometry. For cells grown on plastic for 17 days postconfluence, the linear density of transendothelial openings in endothelial profiles less than 400 nm thick was found to be 0.007 openings per micron. On MDCK matrix, however, the linear density of transendothelial openings in endothelial profiles less than 400 nm thick was found to be 0.157 per micron. Occasionally some cells formed "tube like" structures that also contained diaphragmed fenestrations and transendothelial channels on both sides of the tubes. These findings suggest that the substrate on which endothelial cells are grown can affect their differentiation. PMID- 3862128 TI - Regional mapping of the phenylalanine hydroxylase gene and the phenylketonuria locus in the human genome. AB - Phenylketonuria (PKU) is an autosomal recessive disorder of amino acid metabolism caused by a deficiency of the hepatic enzyme phenylalanine hydroxylase (PAH; phenylalanine 4-monooxygenase, EC 1.14.16.1). A cDNA clone for human PAH has previously been used to assign the corresponding gene to human chromosome 12. To define the regional map position of the disease locus and the PAH gene on human chromosome 12, DNA was isolated from human-hamster somatic cell hybrids with various deletions of human chromosome 12 and was analyzed by Southern blot analysis using the human cDNA PAH clone as a hybridization probe. From these results, together with detailed biochemical and cytogenetic characterization of the hybrid cells, the region on chromosome 12 containing the human PAH gene has been defined as 12q14.3----qter. The PAH map position on chromosome 12 was further localized by in situ hybridization of 125I-labeled human PAH cDNA to chromosomes prepared from a human lymphoblastoid cell line. Results of these experiments demonstrated that the region on chromosome 12 containing the PAH gene and the PKU locus in man is 12q22----12q24.1. These results not only provide a regionalized map position for a major human disease locus but also can serve as a reference point for linkage analysis with other DNA markers on human chromosome 12. PMID- 3862129 TI - Exopolysaccharide-deficient mutants of Rhizobium meliloti that form ineffective nodules. AB - By screening with the fluorescent stain Calcofluor, we have isolated 26 independent transposon Tn5 insertion mutants of Rhizobium meliloti that are deficient in the production of a known extracellular polysaccharide (Exo-). The mutants belonged to six distinct genetic groups based on the ability of their Exo phenotype to be complemented by different recombinant plasmids from a R. meliloti clone bank. With few exceptions, all of the mutants formed ineffective (non-nitrogen-fixing) nodules on alfalfa. For all but one group, the complementing plasmids restored effective nodulation. These results establish a firm and extensive correlation between the ability of Rhizobium to produce a particular polysaccharide and symbiotic proficiency. The ineffective nodules appeared to contain no bacteroids and to form without shepherds' crooks or infection threads; this symbiotic phenotype matches that described for a set of independently isolated mutants that belong phenotypically and genetically to the group B exopolysaccharide mutants described previously [Finan et al. (1985) Cell 40, 869-877]. Apparently the exopolysaccharide, although not required for nodule formation, is involved in wild-type nodule invasion. PMID- 3862130 TI - Variable numbers of pepsinogen genes are located in the centromeric region of human chromosome 11 and determine the high-frequency electrophoretic polymorphism. AB - A panel of 26 mouse-human somatic cell hybrids containing different human chromosome complements was analyzed with a cloned human pepsinogen cDNA probe to determine the chromosomal location and the number of genes encoding these proteins. A complex containing variable numbers of pepsinogen genes was localized to the centromeric region of human chromosome 11 (p11----q13). Examination of somatic cell hybrids containing single copies of chromosome 11 and the corresponding human parental cell lines revealed a restriction fragment length polymorphism determined by pepsinogen haplotypes that contained two or three genes, respectively. Concurrent studies of DNA from individuals exhibiting the most common pepsinogen electrophoretic phenotypes with exon-specific probes demonstrated that the absence of one gene among the different restriction fragment patterns correlated with the absence of one specific isozymogen (Pg 5). Thus, our studies demonstrate that this genetic polymorphism involving intensity variation of individual pepsinogen isozymogens results from chromosome haplotypes that contain different numbers of genes. The regional localization of this polymorphic gene complex will facilitate detailed linkage analysis of human chromosome 11. PMID- 3862131 TI - Expression of hybrid class I genes of the major histocompatibility complex in mouse L cells. AB - The class I genes of the major histocompatibility complex of the mouse can be divided into two categories: those encoding the transplantation antigens and those encoding the Qa and Tla antigens. The inbred BALB/c mouse has 28 potential Qa/Tla genes. The sites of tissue expression, developmental regulation, and functions of these genes are virtually unknown. We have used the technique of exon shuffling to construct hybrid genes between each of three Qa region genes (Q5, Q7, and Q8) and two other class I genes (H-2Ld and Q6). The hybrid genes have been transfected into mouse L cells, in which intact transplantation antigen genes generally are expressed and in which intact Qa genes generally are not expressed. Analysis of expression of the hybrid gene constructs indicates that the 5' half of two of the Qa genes (Q5 and Q8) can readily be expressed in the context of a hybrid molecule, whereas the 3' half prevents cell-surface expression. The exon shuffling approach described here will be useful in characterizing Qa/Tla genes and in identifying or producing new reagents to study the Qa/Tla gene products, their tissue distribution, their developmental stages of expression, and, ultimately, their functions. PMID- 3862132 TI - Genetic differences in oxygen toxicity are correlated with cytochrome P-450 inducibility. AB - Susceptibility to oxygen toxicity was studied in three inbred and two hybrid strains of mice. Because in vitro studies have shown that the cytochrome P-450 enzymes can produce oxygen radicals and H2O2, we tested the hypothesis that inducibility of these enzymes might play a role in oxygen toxicity. Mice responsive to hepatic microsomal enzyme induction by aromatic hydrocarbons [C3H/HeJ, C3H/HeN, C3H/HeJ X DBA/2J (designated C3D2F1/J), C3H/HeN X DBA/2J (designated C3D2F1/N)] were more sensitive to the toxic effects of 100% oxygen exposure than were genetically unresponsive mice (DBA/2J). DBA/2J mice survived significantly longer exposure periods with less lung damage. Lung and liver cytochrome P-450 levels increased 2-to 3-fold in C3H and F1 mice during 100% oxygen exposure (maximum levels at 72-96 hr) and subsequently fell prior to death. No increases were seen in cytochrome P-450 levels in DBA/2J mice. Metabolic pathways involving cytochrome P-450 enzymes may initiate or modulate oxidative damage due to oxygen radicals. The difference in responsiveness of mice to microsomal enzyme induction may imply genetic differences in susceptibility to oxidative stress, may help to explain species differences in susceptibility, and may have long-term implications in therapeutics and patient care if similar inherited differences exist in humans. PMID- 3862133 TI - Transplants of Schwann cell cultures promote axonal regeneration in the adult mammalian brain. AB - Transplantation of embryonic brain tissue or mature peripheral nerves into the adult mammalian central nervous system promotes axonal regrowth from axotomized central nervous system neurons; however, the cellular origin and molecular nature of the factors promoting axonal growth in vivo are unknown. To further characterize cellular environments that facilitate regeneration of central nervous system axons, we developed a methodology whereby cultured cell preparations can be transplanted into the brain of mature mammals. For this procedure, lesions are produced in the septal-hippocampal system of adult rats, and selected regions from collagen-supported Schwann cell/neuron cultures (consisting of Schwann cells, extracellular matrix, and degenerating neuronal processes and myelin but devoid of neuronal perikarya and fibroblasts) are positioned within the intracephalic cavity so that they bridge the lesion gap (approximately 3 mm) separating the septum and hippocampus. At various time up to 3 weeks after transplantation, specimens were prepared for acetylcholinesterase histochemistry and the immunocytochemical localization of laminin (an extracellular matrix protein) and C-4 (a Schwann cell membrane antigen). All specimens (from uninjured controls and from animals with either acellular collagen or mature Schwann cell/extracellular matrix transplants) contained laminin immunoreactivity associated with the meninges, choroid plexus, ependyma, and cerebral blood vessels. All animals with transplants showed prominent laminin staining on astrocytic processes along the intracephalic cavity, but only the Schwann cell/extracellular matrix transplants exhibited dense laminin and C-4 immunoreactivity within the cellular portion of the transplants. Regeneration of acetylcholinesterase-positive septal fibers occurred only in animals containing Schwann cell/extracellular matrix transplants. By 6 days after transplantation, acetylcholinesterase-positive fibers were observed both on laminin-positive cellular tissue strands connecting the septum and the Schwann cell/extracellular matrix transplants and on the initial portions of the transplants. By day 14, acetylcholinesterase-positive fibers traversed the entire lesion cavity in intimate association with the laminin- and C-4-positive cellular layer of the transplants and reinnervated the host hippocampus. However, cholinergic fibers were not associated with all laminin-containing processes along the lesion cavity nor did they grow along acellular collagen transplants. These results indicate the presence of factors in transplants of cultured Schwann cells and their associated extracellular matrix that promote rapid regeneration of central nervous system cholinergic axons in vivo. PMID- 3862134 TI - Two types of muscarinic response to acetylcholine in mammalian cortical neurons. AB - Applications of acetylcholine (AcCho) to pyramidal cells of guinea pig cingulate cortical slices maintained in vitro result in a short latency inhibition, followed by a prolonged increase in excitability. Cholinergic inhibition is mediated through the rapid excitation of interneurons that utilize the inhibitory neurotransmitter gamma-aminobutyric acid (GABA). This rapid excitation of interneurons is associated with a membrane depolarization and a decrease in neuronal input resistance. In contrast, AcCho-induced excitation of pyramidal cells is due to a direct action that produces a voltage-dependent increase in input resistance. In the experiments reported here, we investigated the possibility that these two responses are mediated by different subclasses of cholinergic receptors. The inhibitory and slow excitatory responses of pyramidal neurons were blocked by muscarinic but not by nicotinic antagonists. Pirenzepine was more effective in blocking the AcCho-induced slow depolarization than in blocking the hyperpolarization of pyramidal neurons. The two responses also varied in their sensitivity to various cholinergic agonists, making it possible to selectively activate either. These data suggest that AcCho may produce two physiologically and pharmacologically distinct muscarinic responses on neocortical neurons: slowly developing voltage-dependent depolarizations associated with an increase in input resistance in pyramidal cells and short latency depolarizations associated with a decrease in input resistance in presumed GABAergic interneurons. PMID- 3862135 TI - Changes in plasma proenkephalin peptide F and catecholamine levels during graded exercise in men. AB - Proenkephalin peptide F immunoreactivity, epinephrine, and norepinephrine were measured in the plasma of endurance-trained and untrained male subjects riding on a bicycle ergometer at 28%, 54%, 83%, and 100% of maximum oxygen consumption (VO2). At rest the trained group had peptide F levels almost twice the level of the untrained group, whereas all other variables measured were the same. The maximum epinephrine and norepinephrine levels were found at 100% exercise intensity, with a precipitous drop in the levels at 5 min of recovery. In contrast, the peptide F immunoreactivity reached a maximum at 5 min of recovery and was still substantially above the initial level after 15 min of rest. In addition, the trained subjects showed another peak of peptide F immunoreactivity at 54% VO2max. Possible explanations for the different patterns of catecholamine and peptide F levels are presented. PMID- 3862136 TI - Chloride/formate exchange with formic acid recycling: a mechanism of active chloride transport across epithelial membranes. AB - The pathways for transport of Cl- and formate in microvillus membrane vesicles isolated from rabbit renal cortex were evaluated. An outward formate gradient stimulated the uptake of Cl-, and an outward Cl- gradient stimulated the uptake of formate, indicating Cl-/formate exchange. In addition, an inside alkaline pH gradient induced the accumulation of formate, consistent with nonionic diffusion of formic acid. Although an inward Na+ gradient also stimulated uphill formate accumulation, suggesting Na+/formate cotransport, this effect was abolished when ionophores were used to prevent the generation of a transmembrane pH gradient, indicating an indirect coupling of formic acid transport to Na+/H+ exchange. An inside alkaline pH gradient only minimally stimulated the uptake of 82Br-, used as tracer for Cl-, confirming the absence of appreciable Cl-/OH- exchange. However, the same pH gradient in the presence of a physiologic formate concentration (0.2 mM) markedly stimulated 82Br- influx. These data suggest that Cl-/formate exchange with recycling of formic acid by nonionic diffusion is a potential mechanism for active Cl- absorption across the luminal membrane in the proximal tubule and perhaps in other epithelia. PMID- 3862137 TI - The efflux from and the metabolism of 3H-norepinephrine in sow Graafian follicles. Variable involvement of some prostaglandins during two different stages of the sex cycle. AB - The influences of acetylsalicylic acid (ASA) and of prostaglandins (PGs) E1, E2 or F2 alpha, on the spontaneous total tritium efflux from and on the metabolism of 3H-norepinephrine (3H-NE) in the walls of sow Graafian follicles isolated during two different stages of the sex cycle, were studied. The total 3H efflux from preparations obtained in proestrus (early preovulatory period) was higher than the output from diestrous tissues. This augmentation observed in proestrous samples, mainly attributable to a greater metabolism of 3H-NE, was expressed by an enhanced 3H-efflux corresponding to 3H-O-methylated (3H-OMDA) and 3H normetanephrine (3H-NMN) metabolites. With regard to 3H-labelled compounds retained in the tissue, the follicular walls in proestrus (as compared to those in diestrus), retained more 3H-NMN fraction and less 3H-NE; an augmented metabolism of 3H-NE is suggested for the proestrous follicles. In the presence of ASA (2.2 X 10(-4) M) the above mentioned profiles of early preovulatory follicles, disappeared and the addition in vitro of PGE1 or PGE2 (10(-8) M), but not of PGF2 alpha (10(-8) M to 10(-6) M) was able to reverse the influence of ASA. These findings suggest the involvement of estrogens in the metabolism of 3H NE by sow ovarian follicles and moreover, they also appear to indicate the requirement for some PGs, such as PGE1 and PGE2, generated by cells of the follicular wall. PMID- 3862138 TI - Hypotensive mechanism of acetyl glyceryl ether phosphorylcholine (AGEPC) in dogs. Effects on hemodynamics and humoral factors. AB - One-O-hexadecyl-2-O-acetyl-sn-glycero-3-phosphorylcholine (AGEPC) was intravenously administered to anesthetized dogs to study the effects on hemodynamics and several endocrine factors. The effect of AGEPC on local blood flow was also studied by direct intra-arterial injection. Following intravenous injection, blood pressure and cardiac output decreased significantly (p less than 0.001). Changes in total peripheral resistance (TPR) and heart rate were biphasic. TPR increased significantly (p less than 0.01) after an initial slight reduction. Heart rate decreased significantly (p less than 0.01) with only a transient slight elevation. Femoral blood flow was increased (p less than 0.001) by intraarterial injection and decreased (p less than 0.05) by intravenous administration. Plasma norepinephrine (p less than 0.001), epinephrine (p less than 0.01), thromboxane B2 (p less than 0.001), 6-0-PGF1 alpha (p less than 0.01), aldosterone (p less than 0.001) and cortisol (p less than 0.001) were elevated, but plasma renin activity did not change. These results suggest that the hypotensive mechanism of AGEPC is due to both cardiosuppression and vasodilation. AGEPC increased plasma catecholamines, thromboxane A2, PGI2, aldosterone and cortisol which, in turn, may modify hemodynamics. PMID- 3862139 TI - Platelet thromboxane production in liver cirrhosis. AB - To determine whether platelet prostaglandin production in patients with liver cirrhosis was as impaired as platelet aggregation, serum thromboxane production was studied in 52 patients with liver cirrhosis; 12 patients had consumed more than 80 gr of alcohol/day, for more than ten years; 13 patients had also had diabetes mellitus for more than two years. A reduced thromboxane synthesis by platelets of liver disease patients was observed; the parallel decrease of both platelet thromboxane and serum PGE2 formation may also suggest a decrease in arachidonic acid availability for prostaglandin and thromboxane production. A smaller reduction of thromboxane and PGE2 formation in cirrhotics with diabetes mellitus or chronic alcohol intake was also observed. PMID- 3862140 TI - 3-Mercaptopyruvate sulfurtransferase activity in guinea pig and rat tissues. AB - Activities of 3-mercaptopyruvate sulfurtransferase (EC 2.8.1.2) in guinea pig tissues were determined and compared with those in the corresponding rat tissues. The activities in guinea pig tissues were found to be very low. The activity in the liver was 145.9 mumol pyruvate formed per g of fresh tissue per 15 min. This was 1/50 of the activity in the rat liver. Activities in the kidney and brain were 1/100 of the corresponding rat tissues. Those in the erythrocyte and heart were negligibly low and far less than 1/1000 of these tissues in the rat. Similarities between the guinea pig and patients with beta-mercaptolactate cysteine disulfiduria are discussed. PMID- 3862141 TI - Serotonin-depleting midbrain lesions fail to mitigate hyperphagia and obesity in the Zucker fatty rat. AB - Previous research has shown that damage to the dorsal and median raphe nuclei of rats can impede the subsequent development of hypothalamic hyperphagia and obesity as well as impair the defense of established hypothalamic obesity in response to food deprivation. The present study sought to determine if raphe injury might alter the development of another form of obesity, namely that which occurs spontaneously in the Zucker fatty rat. Subjects were 20 obese females (fafa; mean weight of 200 g) and 20 lean littermate controls (FaFa females; mean weight of 150 g). Following 10 days of baseline intake and weight recordings, half of each group received radio-frequency heat lesions of the dorsal and median raphe nuclei while the other half received sham surgery. Except for a mild suppression of food intake and weight gain during the first few days after lesioning, raphe injury did not alter the hyperphagia or obesity shown by fatties over the 7 week ad lib feeding period studied. Additional 24-hr intake tests of varying sucrose and quinine solutions revealed reduced sucrose acceptance and enhanced quinine rejection by fatties much as has been seen in previous studies of hypothalamic obese rats. Terminal assays of forebrain monoamine levels confirmed that raphe lesions were effective in depleting serotonin (-71% compared to controls) without producing major changes in norepinephrine or dopamine (-14% and +2%, respectively). The inability of raphe lesions to mitigate this form of hyperphagia and obesity suggests that earlier observations of their attenuating effects on hypothalamic obesity were not due to non-specific impairments of behavioral or metabolic factors necessary to permit overeating and weight gain. PMID- 3862142 TI - Electrolytic current parameters in the dorsolateral tegmental obesity syndrome in rats. AB - Female rats received lesions in the dorsolateral tegmentum formed by the 20 sec passage of 0.25, 0.5, or 0.75 mA anodal or 0.5, 0.75, 1.0, 1.25, or 1.5 mA cathodal current. Although all lesion parameters induced roughly comparable body weight gains, the largest effect was seen with 1.25 mA cathodal current. Anodal lesions were much larger and induced transient periods of hyperactivity that confounded the effects of the lesions on body weight gain. PMID- 3862143 TI - Dihydropteridine reductase in schizophrenic patients. AB - The activity of the enzyme dihydropteridine reductase (DHPR) has been recently found to be one of the factors controlling the rate of synthesis of dopamine, norepinephrine, and serotonin, thought to be involved in the etiology of schizophrenia. Several lines of evidence suggest that peripheral and brain DHPR enzymes may be identical. In addition, peripheral DHPR activity has been hypothesized to be important in determining the level of phenylethylamine, a putative psychotogen that is produced peripherally and crosses the blood-brain barrier. Since DHPR activity has never been investigated in schizophrenic patients, we measured the whole blood activity in 20 schizophrenic patients and 20 matched controls. There was no difference between the groups in DHPR activity. PMID- 3862144 TI - Genetic analysis of plasma amine oxidase activity in schizophrenia. AB - Plasma amine oxidase (PAO) activity has been implicated in the biology of schizophrenia. PAO activity is, in part, under genetic control, but its mode of inheritance has not been determined. To assess the genetic pattern of PAO activity and its relation to the transmission of schizophrenia, we studied 73 chronic schizophrenic probands and 217 first-degree relatives (siblings and parents). Single-major-locus hypotheses were tested by pedigree analysis methods for quantitative traits. The distribution of PAO activity indicated significant admixture. When the transmission probability model was used, the familial pattern of PAO activity was consistent with mendelian transmission; the environmental hypothesis was rejected. PAO activity was lower in schizophrenic patients than in unaffected relatives, but the mean reduction in enzyme activity was small (10.7%) and the two groups of subjects overlapped greatly in their PAO values. The difference between ill and well relatives was not statistically significant. However, schizophrenia spectrum disorders segregated with low PAO activity in families of low-activity probands, and a greater proportion of ill than well subjects clustered in the low PAO activity mode. The results are interpreted as follows: (1) The transmission of PAO activity may be determined in part by a single major autosomal gene. (2) Low PAO activity does not qualify as a major risk factor in the schizophrenic population at large; however, a relationship may exist between low PAO activity and the transmission of schizophrenia in families of patients with extremely low enzyme activity. PMID- 3862145 TI - Pentametric distribution of platelet monoamine oxidase activity. AB - The distribution of catalytic activity of platelet monoamine oxidase (MAO) with both tryptamine and phenylethylamine as substrates was examined in 1,129 Swedish men at age 18 years. A mixture of five components was needed to describe the distribution, even when the original scale was transformed to remove skewness. The proportions of admixture were 2% for the extremely low component with a mean of -2.3 sigma, 29% for moderately low MAO (mean -0.8 sigma), 51% for intermediate MAO (mean 0.0 sigma), 15% for moderately high MAO (mean + 1.3 sigma), and 3% for extremely high MAO (mean + 3.0 sigma). Thus, the upper and lower deciles each contain contributions from two extreme components that differ from a much larger intermediate component with activity near the mean of the general population. This is compatible with a minimum of three alleles at a single major locus or with at least two polymorphic loci. The hypothesis that MAO activity is controlled by two alleles at a single locus was tested and rejected. The demonstration of at least five distinct components to the distribution of MAO warrants further research to characterize the biochemical structure and function of MAO enzyme variants as well as study of the behavioral correlates of the components. PMID- 3862146 TI - The dexamethasone suppression and metyrapone tests in depression. AB - The dexamethasone suppression test (DST) and the metyrapone test (MT), a useful and reliable procedure for assessing the integrity of the hypothalamic-pituitary adrenal (HPA) axis, were performed in 28 patients suffering from major depressive illness with melancholia. The relationship between the DST and MT appeared to be complex. Patients who failed to suppress cortisol secretion after dexamethasone administration had higher postmetyrapone cortexolone levels and cortexolone/cortisol ratios than suppressors. However, there was a wide range of metyrapone responses in patients exhibiting abnormal DST results. This suggests that failure of adequate suppression after 1 mg of dexamethasone in depressed patients does not necessarily reflect homogeneity in the HPA axis disturbances of such patients. PMID- 3862147 TI - Endogenous opioid system in catatonia. PMID- 3862148 TI - Tourette syndrome and the opioid system. PMID- 3862149 TI - Occurrence of high concentrations of postdexamethasone cortisol in elderly psychiatric inpatients. AB - The authors retrospectively studied 161 psychiatric inpatients who had received a dexamethasone suppression test (DST). The majority of the patients were over 60 years old, female, and had concurrent chronic medical illnesses. Age was significantly correlated with log-transformed postdexamethasone cortisol concentrations in the 118 nondemented patients with major depression. Four p.m. cortisol concentrations greater than 15 micrograms/dl occurred in 15 patients. All were over 60 years old; all but one had major depressive disorder (MDD); and five had dementia plus MDD. In the same population, a 5 micrograms/dl criterion did not distinguish MDD from non-MDD patients. The results support the existence of a clinically relevant age effect on the DST in patients with MDD. Elderly depressed patients with markedly elevated cortisol concentrations occur frequently, and warrant further clinical and pathophysiological study. PMID- 3862150 TI - Cortisol escape from morphine suppression. AB - Twenty-one unmedicated, sequentially admitted psychiatric patients of either sex and four male healthy volunteers were given an intravenous injection of 2.5 mg morphine. Blood samples were drawn immediately before and at 30-minute intervals for 3 hours after the injection and assayed for cortisol. Morphine suppressed cortisol secretion. Early resumption of cortisol secretion (escape) was more frequent in patients with a diagnosis of major depressive disorder and with abnormal dexamethasone suppression test results. The sensitivity of this infusion paradigm for the diagnosis of major depressive disorder was 40%, and the specificity was 82%. The implications of these findings for the pathophysiology of depression are discussed. PMID- 3862151 TI - Amphetamine response in borderline patients. AB - The behavioral and biological responses to d-amphetamine have been studied extensively in patients with schizophrenia and depression, and to a lesser degree in bipolar affective disorders. Because of theories linking borderline personality disorder to those illnesses, amphetamine, 30 mg, p.o., was administered to eight borderline patients in a double-blind, placebo-controlled study and the results were compared to the responses of normal subjects under identical conditions. Amphetamine led to symptoms of psychosis in four out of eight (50%) borderline patients. No normal subject became psychotic during the procedure. Global ratings of well-being were significantly elevated in the borderline group compared to the normal group. In addition the global response was highly inversely correlated with the patient's score on the Diagnostic Interview for Borderlines. Borderline patients had a nonsignificantly decreased growth hormone response following amphetamine compared to normals. Thus, borderline patients appear to be pharmacodynamically separable from normals. PMID- 3862152 TI - Testing the REM sleep phasic event intrusion hypothesis of schizophrenia. AB - Middle ear muscle activity (MEMA) and periorbital integrated potentials (PIPs) were recorded during rapid eye movement (REM) periods and during the 10 minutes preceding and following REM periods in normals, schizophrenic patients, and patients with schizoaffective and major depressive disorder. Contrary to the phasic event intrusion hypothesis, we observed no leakage or redistribution of MEMA or PIPs from REM into the surrounding stages of non-REM in the schizophrenic patients. Within REM, MEMA rate distinguished patients with schizophrenia from patients with schizoaffective disorder. Schizophrenic patients had higher than normal MEMA rates, whereas the schizoaffective patients had lower than normal MEMA rates. PMID- 3862153 TI - P300 in major depressive disorder. AB - This study presents evidence of differences in the P3 (P300) component of the event-related potential (ERP) between major depressed patients and normal controls. ERPs were collected to visual stimuli in a modified continuous performance task. For each subject, the peak of the P3 (also N2 and P2) component was identified for four different electrode sites and three trial types (target, background, and unexpected). P3 amplitude was significantly smaller in the depressed group to target, but not to background stimuli. P3 latency differences were for the most part nonsignificant. Recent evidence suggests that P3 amplitude may not only reflect higher level cognitive functions, but also some degree of emotional involvement for the subject. It is suggested that a decrease in task involvement could account for the smaller P3 in depressives. PMID- 3862154 TI - Differential effect of subtype of parental major affective disorder on children. AB - Fifty offspring of patients with major affective disorder (MAD) were studied. The children and their parents were interviewed using a structured diagnostic instrument. The results supported previous studies that the children of patients with MAD endorse a variety of symptoms of psychopathology. In addition, when the sample was separated by subtype of parental MAD, few differences in the types of symptoms were reported, and the differences that were found may be spurious. The differences, as well as indications for future research, are discussed. PMID- 3862155 TI - A hostility measure for use in family contexts. AB - A modification of the Gottschalk-Gleser standardized instructions for eliciting speech samples was developed and tested in ongoing family studies. This modification, the Wynne-Gift technique, allows the interviewer to focus on the speaker's relationships with various family members. The usefulness and validity of the approach was assessed in a study of differences in attitudes toward the husband of 10 separated or divorced women as compared to the attitudes of 11 married women. Significant differences were found in the expected direction between mean hostility outward scores as well as hostility toward the spouse or ex-spouse of these two groups of women. The range of applications of this modification of eliciting speech samples is discussed. PMID- 3862156 TI - Anxiety and caffeine consumption in people with anxiety disorders. AB - Forty-three anxiety disorder patients (DSM-III) who completed the Hopkins Symptom Checklist (SCL-90-R) and a caffeine questionnaire were compared to 124 medical inpatients. Eighty-four percent of the anxious patients were low caffeine consumers (0-249 mg/day) compared to 41% of medical inpatients; 65% of anxiety patients consumed less than 100 mg/day. In anxiety patients, there were no significant correlations between subscale scores of the SCL-90-R and amount of caffeine consumption. Patients who consumed less than 100 mg/day did not differ on anxiety subscale scores of the SCL-90-R from those who consumed more. However, patients who reported becoming anxious in response to drinking coffee had higher SCL-90-R anxiety subscale scores than patients who did not, even though their daily consumption was not different. It appears that anxiety disorder patients have increased caffeine sensitivity which leads to decreased consumption. PMID- 3862157 TI - Depressive symptoms, major depression, and generalized anxiety: a comparison of self-reports on CES-D and results from diagnostic interviews. AB - This study evaluates the validity of the Center for Epidemiologic Studies Depression Scale (CES-D) by comparing it to DSM-III diagnoses of major depression and generalized anxiety, using the National Institute of Mental Health Diagnostic Interview Schedule (DIS). Data were gathered on a sample of 310 mothers of children with chronic disabilities. The utility of the CES-D for detecting major depression was approximately equal to its utility for detecting generalized anxiety. Multivariate analysis revealed that the unique association of CES-D with current depression was equal to its association with current generalized anxiety and that the two disorders had additive effects on CES-D. The analysis did not identify any individual CES-D symptom as specific to either disorder. The findings, therefore, do not support the notion that the CES-D measures depression specifically. PMID- 3862158 TI - Social skills training for patients with schizophrenia: a controlled clinical trial. AB - Twenty-eight schizophrenic male patients, diagnosed by the Present State Examination and Catego criteria, and from families high on "expressed emotion," were randomly assigned to either intensive social skills training or holistic health therapy. A multidimensional evaluation was conducted before and after 9 weeks of inpatient treatment and for 24 months in the community. Patients exposed to social skills training evidenced significantly greater acquisition, generalization, and durability of social skills; their social adjustment in the community was rated as better by significant others; and they experienced fewer relapses and rehospitalizations. PMID- 3862159 TI - Advanced periodontitis treated non-surgically: an 8-year follow-up. PMID- 3862161 TI - A classification and scheme of therapy for occlusal breakdown. PMID- 3862160 TI - A method for altering the periodontal pocket environment from anaerobic to aerobic. PMID- 3862162 TI - Glass-cermet cements. PMID- 3862163 TI - Visible light-activated posterior composite resins--a comparison of surface hardness and uniformity of cure. PMID- 3862164 TI - The prevalence of osseous defects on the distal aspect of the mandibular second molar in the absence of the third molar in a dental student population. PMID- 3862165 TI - Alternative methods for use of the rubber dam. PMID- 3862166 TI - Recall radiopaque response determined from radiographic examination of 211 consecutive cases with initial periapical pathosis. PMID- 3862167 TI - Mirror-image twins with geminated incisors. Report of a case. PMID- 3862168 TI - The use of microcomputers in mouth charting and case presentation. PMID- 3862169 TI - [Demonstrations for oral prevention]. PMID- 3862170 TI - [Tray system--an aid in systematic organization and practice hygiene]. PMID- 3862171 TI - [Assistants' hands: diseases, hygiene, care]. PMID- 3862172 TI - [Origin and properties of various rays (III)]. PMID- 3862173 TI - [AIDS--how dangerous is this new disease?]. PMID- 3862174 TI - [Gnathologic model]. PMID- 3862175 TI - [Attachment-divided bridge in the posterior region with various morphologic designs of the pontics]. PMID- 3862177 TI - [Trimming of orthodontic planning models]. PMID- 3862176 TI - [Insulation in the production of orthodontic appliances]. PMID- 3862178 TI - Influence of sex hormones on prostaglandin dehydrogenase activity in the rat uterus. AB - The present experiments report the effects of estradiol or of progesterone on the activity of 15-prostaglandin-dehydrogenase (PGDH) in the uterus of spayed rats. When the substrate was PGF2 alpha the treatment with progesterone (4 mg X day-1, two days) or with estradiol-17-beta (0.5 ug + 1 ug) did not show any effect on the activity of the enzyme. On the contrary, uteri from ovariectomized rats injected with a higher dose of estradiol-17-beta (0.5 ug + 50 ug) exhibited a significant increment. When the substrate was PGE2, progesterone failed again to modify the enzyme activity, whereas estradiol, both at a low and at a high doses, enhanced significantly the uterine PGDH activity. The possibility of two different PGDHs for each PG and the role of estradiol in enhancing PGE2 catabolism into 15-keto-PGE2 as a mechanism subserving the effect of estrogens on the output of this PG in the rat uterus, are discussed. PMID- 3862179 TI - Role of renal prostaglandins in the fall in urine osmolality after papillary micropuncture. AB - The effect of micropuncture of the renal papilla through an intact ureter on urinary concentrating ability of rats was examined. Micropuncture of the renal papilla caused a fall in urine osmolality in the punctured kidney from 1718 +/- 106 to 1035 +/- 79 mosmol/kg X H2O. In order to investigate the role of renal prostaglandins in this process, PGE2 excretion was measured and found to increase from 63.4 +/- 14.0 to 205.5 +/- 57.1 pg/min. Urine osmolality and PGE2 excretion from the contralateral kidney were not significantly altered. In animals given meclofenamate (2 mg/kg X hr), renal PGE2 excretion was reduced to 22.3 +/- 5.1 pg/min prior to micropuncture and it remained low at 8.9 +/- 1.8 pg/min after papillary micropuncture. Meclofenamate also blocked the fall in urine osmolality caused by micropuncture of the renal papilla, with urine osmolality averaging 1940 +/- 122 before and 1782 +/- 96 mosmol/kg X H2O after the micropuncture. These results indicated that papillary micropuncture through an intact ureter increased renal PGE2 excretion and that a rise in renal production of PGE2 or some other prostanoid is associated with a fall in urine concentrating ability. PMID- 3862180 TI - The effect of variations in the polymer/monomer mixing ratios on residual monomer levels and flexural properties of denture base materials. PMID- 3862181 TI - Repairing an acrylic resin hollow bulb obturator. PMID- 3862182 TI - Flexible benefit packages for the dental laboratory. PMID- 3862183 TI - Human gene therapy: scientific and ethical considerations. AB - The term "gene therapy" encompasses at least four types of application of genetic engineering for the insertion of genes into humans. The scientific requirements and the ethical issues associated with each type are discussed. Somatic cell gene therapy is technically the simplest and ethically the least controversial. The first clinical trials will probably be undertaken within the next year. Germ line gene therapy will require major advances in our present knowledge and it raises ethical issues that are now being debated. In order to provide guidelines for determining when germ line gene therapy would be ethical, the author presents three criteria which should be satisfied prior to the time that a clinical protocol is attempted in humans. Enhancement genetic engineering presents significant, and troubling, ethical concerns. Except where this type of therapy can be justified on the grounds of preventive medicine, enhancement engineering should not be performed. The fourth type, eugenic genetic engineering, is impossible at present and will probably remain so for the foreseeable future, despite the widespread media attention it has received. There are four potential levels of the application of genetic engineering for the insertion of gene into a human being. Somatic cell therapy: this would result in correcting a genetic defect in the somatic (i.e.,body) cells of a patient. Germ line gene therapy: this would require the insertion of the gene into the reproductive tissue of the patient in such a way that the disorder in his or her offspring would also be corrected. Enhancement genetic engineering: this would involve the insertion of a gene to try to "enhance" a known characteristic; for example, the placing of an additional growth hormone gene into a normal child. Eugenic genetic engineering: this is defined as the attempt to alter or "improve" complex human traits each of which is coded by a large number of genes; for example, personality, intelligence, character, formation of body organs, and so on. PMID- 3862184 TI - Location of topics in NIH Guidelines for Research involving recombinant DNA molecules. PMID- 3862185 TI - [Diagrams and technics for opening the lower molars]. PMID- 3862186 TI - [Oral aphthae: prevalence, history and socio-economic status in selected populations in Argentina]. PMID- 3862187 TI - [Learning, retention and teaching strategies]. PMID- 3862188 TI - [The School of Dentistry of the University of La Plata, from the beginning until today]. PMID- 3862189 TI - [Surfaces of the margin edges of cavities using scanning electron microscopy]. PMID- 3862190 TI - [Splinting with inlays. Presentation of a case]. PMID- 3862191 TI - [Acute lymphoblastic leukemia L3 in Hodgkin's disease in remission: primary or secondary leukosis?]. PMID- 3862192 TI - Clinical experience with preoperative chemotherapy for osteosarcoma. AB - Since 1978 preoperative chemotherapy has been administered to 15 consecutive patients with osteosarcomas in Zurich. Preoperative chemotherapy was acceptably well tolerated and did not impair surgical procedures. Our retrospective analysis confirmed that the extent of necrosis after preoperative chemotherapy is of biological importance for the further course of the disease. Patients with extensive necrosis had better relapse-free survival and longer overall survival than those with little necrosis. PMID- 3862193 TI - Effect of intensive adjuvant chemotherapy on wound healing in 69 patients with osteogenic sarcomas of the lower extremities. AB - Reported surgical adjuvant trials in humans have resulted in little clinically significant impairment of wound healing. Such trials are often carried out with subtherapeutic doses or with the drugs administered relatively late in the wound healing process. It is the objective of our study to investigate the effect of intensive pre- and postoperative chemotherapy (BCD, ADR, HD-MTX) on wound healing in patients with osteogenic sarcomas. Wound healing was defined in our study as lack of infection. In a series of 110 patients with osteogenic sarcomas we analyzed the data of 69 patients with lower extremity lesions: of these, 54 patients had distal femur lesions and 15 had upper tibia and fibula lesions. All the patients underwent en-bloc resections and insertion of a prosthetic device. Pre- and postoperative antibiotics were given routinely. In 80% of our patients (55/69) an uneventful postoperative course was recorded with respect to wound healing. None of these required a secondary operative procedure. Debridement of the wound or debridement of the wound followed by skin grafting had to be performed in 14% (10/69) of the patients. Most of the amputations were performed early in this series of cases. After secondary surgery wound healing was uneventful in most of the patients. No patient died as a consequence of wound infection. Mixed bacterial infections were found in 13/14 patients. No single specific bacterium could be identified. One patient developed a fungal infection (aspergillosis). Eight infections were secondary to skin necrosis. In this series we later found the serious effects of the skin necrosis and slough could be reduced by early intervention with a muscle pedicle flap.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3862194 TI - The in vivo effects of prostaglandin F2 alpha and prostaglandin E2 on rat urinary excretion of vanillylmandelic acid. AB - The effects of prostaglandin(PG) F2 alpha and E2 on rat urinary level of vanillylmandelic acid(VMA) were studied, and only PGF2 alpha was found to decrease VMA excretion. This may be resulted from the inhibition of catecholamine metabolism. PMID- 3862195 TI - A possible role of antihypertensive polar renomedullary lipid (APRL) and prostaglandin E2 in the kidney in the antihypertensive action of pindolol. AB - The influence of the pretreatment with CV-3988, a specific antagonist of antihypertensive polar renomedullary lipid (APRL), and/or indomethacin on the antihypertensive effect of pindolol was examined in order to clarify a possible role of APRL and prostaglandin E2 (PGE2) in the kidney in the effect of pindolol in male spontaneously hypertensive rats (SHR). CV-3988 effectively attenuated the antihypertensive effect of pindolol, although pindolol still significantly lowered blood pressure following CV-3988 treatment. Besides, the pretreatment with CV-3988 showed no significant effect on an increased PGE2 level and a decreased volume of urine after pindolol treatment. The antihypertensive effect of pindolol disappeared after the CV-3988 treatment in combination with indomethacin. PMID- 3862196 TI - Immunisation of cattle with a recombinant togavirus-vaccinia virus strain. AB - Genetic engineering techniques have been used to construct a vaccinia virus recombinant which contains and expresses togavirus (Sindbis) genetic information. Intradermal inoculation of this recombinant strain into calves caused a transient pock-type lesion at the site of inoculation and elicited the production of substantial levels of anti-Sindbis virus neutralising antibodies. These results suggest that recombinant vaccinia virus vaccines may have potential for use in veterinary medicine. PMID- 3862198 TI - [Morphological study of calculus deposits on full and partial dentures. I. Structure, distribution and composition]. PMID- 3862199 TI - [Effect of addition of micro-capsules to the disintegration of phosphate-bonded investment]. PMID- 3862197 TI - Effect of PGF2 alpha administration on the release of endogenous PGF2 alpha and oxytocin in indomethacin-treated goats. AB - Repeated intramuscular injection of 1 mg prostaglandin F2 alpha (PGF2 alpha) during the luteal phase of the oestrous cycle of the goat hastened luteolysis and resulted in rapid increases in jugular concentrations of 13,14-dihydro-15-keto PGF2 alpha (PGFM), the primary metabolite of PGF2 alpha, and of oxytocin; similar injections of PGF2 alpha in indomethacin-treated goats had a reduced effect on PGFM and oxytocin concentrations, and failed to induce luteolysis. The same injections of PGF2 alpha were without effect on PGFM and oxytocin concentrations in ovariectomised goats. The results suggest that exogenous PGF2 alpha, or endogenous PGF2 alpha released at luteolysis, may induce the release of ovarian oxytocin in the goat. PMID- 3862200 TI - [High resolution scanning electron microscopy of surface layer of the mature bone]. PMID- 3862201 TI - Localization of sudanophilia at the site of calcification in the proximal tibial articular cartilage of rat given strontium carbonate. PMID- 3862202 TI - [Porosities of restorative composites--porosities of composites mixed in air or under a vacuum]. PMID- 3862203 TI - [Antibacterial effect of calcium hydroxide on Streptococcus sanguis as the root canal medicament]. PMID- 3862204 TI - [Experience with surgical correction of masseteric hypertrophy]. PMID- 3862205 TI - [Class 2 composite restorations. In vitro prevention of contraction gaps]. PMID- 3862206 TI - [Betadine gargle for cancers of the mouth: study of its effect on thyroid function]. PMID- 3862207 TI - [Dentistry in pregnancy and in puerperium]. PMID- 3862208 TI - [Sinus aspergillosis]. PMID- 3862209 TI - [Use of corticosteroids and sulfathiazole in endodontics]. PMID- 3862210 TI - [Importance of plaque pH in calculus formation]. PMID- 3862213 TI - [Benign cementoblastoma. Report of a clinical case]. PMID- 3862211 TI - [Alveolar exostosis in skulls: incidence and distribution]. PMID- 3862212 TI - [Structural and morphological pathology in primary teeth in lower economic level students]. PMID- 3862214 TI - [Pulpectomy in deciduous teeth]. PMID- 3862215 TI - [Etiology of caries: Streptococcus mutans, saliva buffering capacity and type of diet]. PMID- 3862216 TI - The verdict is not yet in on HMOs (health maintenance organizations). PMID- 3862217 TI - Simplified marketing of your dental laboratory: establishing value, defining strategies, creating advertising promotions, using sales techniques. PMID- 3862218 TI - Opportunities in non-traditional education. PMID- 3862219 TI - Contemporary issues in public health. PMID- 3862220 TI - [My approach to malpractice problems in dentistry (2)]. PMID- 3862221 TI - [Open bite in children. Contribution to its study]. AB - A statistic and processing study of 40 cases of open bite deformities in infants is proposed from exact clinical examinations, and various teleradiographic analysis (Coutand, Delaire, Tweed, Sassouni). The statistic study set off the anatomical complexity of open bite deformities. The processing study, recording the concordance among various teleradiographic techniques, clear 4 associated dysmorphic groups susceptible to allow adjusted treatment planning. PMID- 3862222 TI - [Management of neuromuscular training and psychotherapy]. AB - In 9 out of 10 cases it is a very simple matter to persuade children age 7 to 9 years to stop sucking their thumbs by means of very elementary and brief supportive psychotherapy. In the majority of cases it is possible, three months after interruption of the habit and after studying the morphologic improvement, to decide whether treatment should be completed by education of deglutition and of phonetic articulation, possible after previous mechanical treatment if this is justified by the residual vestibulolingual bite disorder. PMID- 3862223 TI - [Oral discoid lupus erythematosus. Diagnostic considerations apropos of a case]. AB - The study and presentation of a typical case of discoid lupus erythematosus with oral lesions in a 30-years old woman, without visceral manifestations at present, was the motive for a revision and updating of the concepts of etiology, differential diagnosis, treatment and prognosis of this disease. The authors emphasize the importance of the clinical and evolving aspect of the lesions, long term development, as well as the response to treatment (an antimalarial synthesis, applied systematically and infiltrates with betamethasone solution) in order to reach valid diagnostic conclusions. It is important in the anatomopathological study to include the atrophic zones of the central portion of the discoid lesion. PMID- 3862224 TI - [An unusual form of isolated fracture of the orbital floor: "valve fracture". Therapeutic problems]. AB - Among isolated fractures of the orbital floor, the authors are pointing out an unusual clinical type characterized by the irreducibility of the orbital contents ruptured in the maxillary sinus by using classical procedures. This primary failure is due to a bone fragment dropped in the sinus and being attracted by the herniated collar when trying to integrate the hernia in the orbit. To name this type of lesion, the word "valve fracture" is proposed because of the analogy of the one way function of a valve and its different mechanism from the classical trapdoor fracture. The different concepts of the pathogenesis of isolated fractures of the orbital floor and the physiopathology of the frequently associated ocular disturbances are briefly exposed. The authors report the case which confronted them to the valve fracture. Following a direct trauma to the right orbital area a 13-year-old child presented a limitation of the upwards movements of the right eye with diplopia and a positive forced duction test. The surgical exploration shows an orbital hernia in the sinus which is impossible to reposition either with a higher incision (under the orbital rim) or with a lever incision, upper vestibular incision (through maxillary sinus). Only the infraorbital marginotomy described by P. Tessier exposes completely the lesions and allows understanding of the mechanism of this primary irreducibility related to the valve movement of the fractured bone fragment. Above all, marginotomy allows an atraumatic set. If is performed combining gentle handles of pulling and forcing back on the ruptured pieces while keeping opened the valve. PMID- 3862225 TI - [Myrhaug's operation. Apropos of 8 cases]. AB - Myrhaug's operation was performed in 5 patients with recurrent dislocations, including two after failure of buttress operations, and 3 cases of temporomandibular joint pain and dysfunction syndrome. The particular conditions for choice of patient for this operation are emphasized, these excluding all cases followed up after occlusal reconstruction and requiring rapid and effective solutions apparently supplied by this surgical procedure. PMID- 3862226 TI - [Treatment of inveterate unilateral dislocations of the mandible by open repositioning of the condyle and meniscectomy]. AB - A new method for treating inveterate forms of mandibular luxation is described, after a brief review of conventional therapeutic procedures. The route of approach chosen provides wide exposure of the temporo-mandibular joint, the endoarticular approach ensuring protection of pericondylar venous plexuses and of the internal mammary artery by allowing section of the external pterygoid tendon and the performance of a juxta-cervical capsulotomy. Excellent results were obtained in two patients with unilateral inveterate dislocation of the mandible operated upon using this procedure. PMID- 3862227 TI - [Congenital idiopathic gingival hyperplasia observed in a 6-year-old child]. AB - Congenital diffuse gingival hyperplasia is a rare entity. A case is presented for the first time in Senegal, the etiology of the affection being undetermined. The various pathogenic hypotheses for this lesion include: diffuse gingival fibroma, congenital, hereditary or idiopathic gingival fibromatosis, familial gingival elephantiasis and idiopathic or hereditary gingival hyperplasia. PMID- 3862228 TI - Location and ultrastructure of the first cementum formed in rabbit incisors. AB - The morphology of the continuously erupting rabbit incisor differs characteristically from that of the rodent incisor and is incompletely known. In this study, permanent incisors from fetal New Zealand white rabbits aged 26-30 days in utero were processed for transmission electron microscopy. Examination of longitudinal and cross-sections revealed that disintegration of the epithelial sheath on root analog surfaces was followed by cementogenesis. The first layer of cementum matrix was seen on the mesial aspect and consisted of a finely granular ground substance and a few embedded collagen fibrils which extended to the cementodentinal junction. Within the period 27-30 days in utero, acellular cementum was formed on all root-analog surfaces and, in addition, formed a fine coating over the enamel. Although the initially formed cementum layer contained fewer collagen fibrils than subsequent layers, a layer of so-called intermediate cementum was not observed. PMID- 3862229 TI - Caries, periodontal status and some salivary factors in lactovegetarians. AB - Twenty-eight lactovegetarians as well as age- and sex-matched controls were interviewed about their dietary habits, especially the frequency of ingesting acid fruits, drinks and foods, as well as their dental health habits. Samples of stimulated saliva were collected in connection with the clinical and radiologic study. Plaque, Gingival and Calculus Indices were not significantly different in lactovegetarians and controls. Of the lactovegetarians 76.9% and of the controls none had dental erosions on some tooth surfaces. In lactovegetarians the rate of flow of stimulated saliva was lower than in controls but did not decrease with advancing age as it did in controls. Salivary pH was lower in lactovegetarians than in controls. PMID- 3862230 TI - Effect of repeated intake of a sugar free fluoride-containing chewing gum on acidogenicity and microbial composition of dental plaque. AB - In a double blind cross-over study, 20 subjects were given either a sugar free chewing gum containing 0.25 mg fluoride or the same chewing gum without fluoride, eight times a day for 7 days. The pH of 3-day-old plaque was determined before and after each experimental period following a 30-s mouth-rinse with 10 ml 15% sucrose. The pH-decrease was significantly less pronounced after using the fluoride gum than after the placebo gum (P less than 0.001). In a second study, 20 subjects participated in a similar study. In this experiment the acid production activity from sucrose in dental plaque in vitro was determined with the aid of a titration method. In addition, the dental plaque wet weight and the total number of cultivable organisms, Streptococcus mutans and lactobacilli, expressed as the number of colonies per mg plaque, were determined. No significant effect was found on any of these parameters after using the fluoride gum compared to the placebo gum. Thus, the results indicate that slightly elevated levels of fluoride in saliva during daytime, achieved by repeated intake of fluoride gums for 7 days, are sufficient to influence the acidogenicity of dental plaque in vivo. PMID- 3862231 TI - Fluorine levels in in vitro remineralized enamel after treatment with 1000 ppm F as NaF, MFP or mixed solutions. AB - By means of secondary ion mass spectrometry (SIMS) an investigation has been made of the F uptake and the transport of fluorine-carrying ions in artificially carious human enamel after in vitro remineralization. The fluoridation was effected from solutions of pure Na2FPO3 (MFP), pure NaF, or mixtures of MFP and NaF, always with a total F content of 1000 atom-ppm. The recorded in depth profiles of F concentration show that, after 14 days of remineralization, 1) neither the acquired F levels nor the F distributions are greatly dependent on whether fluoridation is from NaF, MFP or mixtures, 2) the F distribution shape is not strongly influenced by a 3-month storage followed by remineralization, 3) the penetration of F beyond the lesion is generally deeper from NaF than from MFP, and 4) the effect of long storage on penetration depth is mainly noticeable for MFP-treated specimens. PMID- 3862232 TI - Salivary interactions with homologous and heterologous strains of oral streptococci and epithelial cells. AB - Twenty strains of oral streptococci resembling the species of Streptococcus mitior and Streptococcus salivarius were isolated from four subjects and were incubated with homologous and heterologous whole clarified saliva. Supernatants of bacterially absorbed and control saliva were analyzed in tandem crossed immunoelectrophoresis (TCIE) against a rabbit anti-human saliva antiserum. Six to eight antigens were detected. After incubation with the bacteria, the saliva supernatants showed a decrease in the number of antigens detectable by TCIE. For all four salivas tested, the homologous group of strains absorbed fewer antigens. Some of the antigens could be eluted from bacterial pellets with 1 M NaCl after repeated washings in PBS. Epithelial cells also absorbed fewer antigens from homologous than heterologous saliva. PMID- 3862233 TI - Salivary Streptococcus mutans count and gingivitis in children after rinsing with a chlorhexidine-fluoride solution with and without strontium. AB - Thirty schoolchildren, 9-12 yr old with high DMF score, rinsed their mouths twice a day for 3 days with a chlorhexidine-fluoride (CXF) solution or a chlorhexidine fluoride-strontium (CXFSr) solution. Streptococcus mutans counts (CFU) were made from saliva incubated on MSB agar and the gingival bleeding was recorded both before and after the rinsing period. S. mutans count decreased significantly immediately after the rinsing with each of the solutions (from 650 X 10(3) to 170 X 10(3) CFU/ml by CXF and from 500 to 170 X 10(3) CFU/ml by CXFSr). Within about 18 days after the rinsing with each solution the salivary S. mutans counts returned to the original level. Gingival Bleeding Index (GBI) was significantly reduced by half through the CXF rinsing while the slight reduction by CXFSr was nonsignificant. Both of these changes were temporary. The results suggest that short rinsing periods with the CXF solution may be more advisable than daily rinses as a contribution to the maintenance of oral health in subjects or groups in need of such a prophylaxis. The weaker effect found with the CXFSr solution suggests that the cariostatic effect recently found in rats with the same solution may be due to other mechanisms than reduction of the oral S. mutans count. PMID- 3862234 TI - Dimensional and phase changes of dental amalgams. AB - The relationship of long-term expansion to phase changes of dental amalgams was examined. Using multiple regression analysis, a predictive equation was found which showed that the linear dimensional change was dependent on the alterations in the content of gamma 2 and beta 1. PMID- 3862235 TI - Electrochemical potentials of amalgam restorations in vivo. AB - The potentials of 407 amalgam restorations have been determined in vivo. The measurements were performed with very high impedance equipment, and relative to a Ag/AgCl reference electrode. The readings varied from -23 mV to -595 mV, with 90% of the readings confined to within -127 mV to -431 mV and a mean value of -226.1 mV. Of the restorations, 394 were measured twice, and no significant difference could be found between the first and the second reading. During the study, eight new restorations were inserted. Their potentials varied from -180 mV to -565 mV, with a mean of -339.4 mV, which was significantly lower than that of the older restorations. PMID- 3862236 TI - A clinic for myelodysplasia/congenital hydrocephalus. PMID- 3862237 TI - Evaluation of the Kidner procedure for prehallux. PMID- 3862238 TI - The prevalence of respiratory symptoms among farmers and ranchers in southeastern South Dakota. PMID- 3862239 TI - [Histo-pathological studies of periodontal tissue reactions to perforations in the furcations of dog teeth treated with various materials and agents]. PMID- 3862240 TI - [Morphological studies of Japanese mandibular third molars]. PMID- 3862241 TI - [Longitudinal study of the interdental spaces in the deciduous dentition. II. The mandibular arch]. PMID- 3862242 TI - Characterization of diphtheria-toxin-resistant mutants lacking receptor function or containing nonribosylatable elongation factor 2. AB - Stable mutants resistant to diphtheria toxin (DT) were isolated from Chinese hamster ovary cells (CHO-K1) by single-step mutations with various mutagens. All the mutants were classified into two major groups as reported by other workers (4 6): toxin-entry mutants (DTrI) and translational mutants (DTRII) at the level of elongation factor 2 (EF-2). These mutants were further characterized by directly measuring the specific uptake of [125I]DT and the content of nonribosylatable EF 2 by two-dimensional gel analysis. DTrI mutants, which showed no cross-resistance to Pseudomonas exotoxin A (PA), had no ability to associate with [125I]DT and contained only ADP-ribosylatable EF-2, like wild-type cells. DTRIIb mutants maintained about 50% of the normal level of cellular protein synthesis in the presence of DT, and two-dimensional gel analysis directly showed that they contained equivalent amounts of ADP-ribosylatable and nonribosylatable EF-2 molecules. Fully toxin-resistant cells, named KEE1 (DTRIIa), were isolated from a DTRIIb mutant (KE1) by two-step mutation. KEE1 cells showed full resistance to DT and PA, the normal level of association with [125I]DT, and produced only nonribosylatable EF-2. Biochemical analysis of somatic cell hybrids indicated that the DT-resistant character of class II behaved codominantly. These results strongly supported the hypothesis that two copies of the gene for EF-2 are functional in CHO-K1 cells. PMID- 3862243 TI - Rapid and quantitative detection of unique sequence donor DNA in extracts of cultured mammalian cells: an aid to chromosome mapping. AB - A rapid and highly sensitive method for screening the human DNA content of hybrid or transfected mammalian cells is described. Transfectants containing as little as 200 kb of otherwise undefined human DNA can be readily detected in a background of mouse chromatin. At the highest stringency, single-copy sequences can be detected. Large numbers of independent gene-transfer products are easily screened, making the method ideally suited to the identification of rare, but otherwise unselectable, events. The method does not rely upon the expression of the gene sequence of interest; the sole proviso is the availability of an appropriate DNA probe for the chromosomal region or locus of interest. PMID- 3862244 TI - Cell cycle-dependent repair of double-strand DNA breaks in a gamma-ray-sensitive Chinese hamster cell. AB - A Chinese hamster cell mutant has been isolated which is extremely sensitive to killing by gamma-irradiation in the G1 and early S phases of the cell cycle (LD50 of 20 vs. 250 rads for parent), but which has nearly normal resistance in late S. The mutant cell is able to repair single-stranded DNA breaks introduced by gamma radiation. However, in comparison to its parental cell, the mutant is deficient in the repair of double-stranded DNA breaks produced by gamma-irradiation during the sensitive G1-early S period, while in the resistant late S period, the repair is nearly the same for both cell types. This correlation between gamma-ray sensitivity and repair strongly suggests that an inability to repair double strand DNA breaks in G1 is the basis for the hypersensitivity of the mutant to killing by gamma-rays in this phase of the cell cycle. It also provides direct evidence in mammalian cells that the ability to repair double-strand DNA breaks induced by ionizing radiation is an important biochemical function in cell survival and supports the hypothesis that unrepaired double-strand breaks are a major lethal lesion in mammalian cells. A plausible explanation for the appearance of the cell cycle phenotype of the mutant is that in normal cells there are at least two pathways for the repair of double-strand breaks, one of which functions primarily in late S phase, and the other, either throughout the cell cycle or only in the G1 and early S phases. PMID- 3862245 TI - A new approach to gene mapping by in situ hybridization on isolated chromosomes. AB - A new technique was developed for in situ hybridization on isolated murine chromosomes. The safety and relative rapidity of the method is due to the ready availability of large numbers of isolated "target" chromosomes with well preserved morphology. Its applicability was demonstrated by mapping c-myc to band 15D of Robertsonian (6;15) fusion chromosomes. This localization coincides with the cytogenetic mapping of the translocation breakpoints in mouse plasmacytomas that carry the typical rcpt (12;15) translocation. PMID- 3862246 TI - [The megakaryoblastic component of mixed blast crises]. PMID- 3862248 TI - Geriatrics and geriatric dental education in the United States. PMID- 3862247 TI - [Cure of otologic mucormycosis in a patient with acute myeloblastic leukemia]. PMID- 3862249 TI - Communicating with the elderly patient. PMID- 3862250 TI - The importance of denture identification. PMID- 3862251 TI - Predictors of dental behaviors among the elderly. PMID- 3862252 TI - The psychophysiologic etiology of anxiety in the geriatric dental patient. PMID- 3862253 TI - A simple mouthstick prosthesis for a quadriplegic patient. PMID- 3862254 TI - Successful communication with older patients. PMID- 3862255 TI - New drugs of 1984. PMID- 3862256 TI - Case of the month. Acute pharyngeal infection. PMID- 3862257 TI - A comparison of the 1977 and 1985 antibiotic prophylactic guidelines for dental patients at risk of bacterial endocarditis. PMID- 3862258 TI - Headache related to chronic caffeine addiction. PMID- 3862260 TI - Direct reimbursement--one company's experience. PMID- 3862259 TI - Case of the month. Persistent gingivitis. PMID- 3862261 TI - Isotretinoin (Accutane) and pregnancy. PMID- 3862262 TI - Menace for dentists: varicosities. PMID- 3862263 TI - Fighting back with help from Uncle Sam. PMID- 3862264 TI - Study of HLA antigens of the Martinican population. AB - This is the first time a study has been undertaken on the HLA profile of the Martinican population, a population which is essentially the product of intermixture between African-Negroes and French Caucasians. Two hundred and thirty-eight nonrelated subjects were typed for the A and B loci, 158 subjects for C locus and 128 for DR locus. After analysis of our parameters (antigen and gene frequencies, linkage disequilibria, etc.) and their comparison to those found in the Black and Caucasian control populations, we came to the conclusion that our racially-mixed population is closer to the African-Negro population than to the French Caucasian. A study of the average gene flow enabled us to evaluate the Caucasian contribution as being about 30%. This figure is subject to change inasmuch as racial intermixture continues. Socio-cultural variables are assumed to play a minimal role, given the high rate of illegitimacy. PMID- 3862265 TI - Familial studies in human brucellosis. PMID- 3862266 TI - Experimental systemic toxicology of 4'-epidoxorubicin, a new, less cardiotoxic anthracycline antitumor agent. AB - The acute and chronic iv toxicity of 4'-epidoxorubicin, a new antitumor anthracycline antibiotic, was compared with doxorubicin. The LD50 of 4' epidoxorubicin was 16.07 mg/kg in mice, 14.27 mg/kg in rats, and about 2 mg/kg in dogs; the LD50 of doxorubicin was 11.98 mg/kg in mice, 10.51 mg/kg in rats, and about 2.5 mg/kg in dogs. Rats and dogs were also dosed iv for 91 days (3 injections/week) with 4'-epidoxorubicin or doxorubicin at doses of 0.128, 0.32, and 0.8 mg/kg to rats and 0.064, 0.16, and 0.4 mg/kg to dogs. A comprehensive toxicological evaluation of the animals was carried out before, throughout, and at the end of the study. High-dose 4'-epidoxorubicin induced toxic clinical signs in dogs, and in both species caused loss of body weight, antiproliferative effects on blood-forming organs and testes, and degenerative lesions in kidneys and heart. The cardiac damage was moderate in rats and very mild in dogs; only three male rats died at this dose. The medium dose induced less pronounced changes and no heart lesions and the low dose was practically nontoxic. Doxorubicin showed similar antiproliferative activity, but more evident toxic effects, especially on the heart; many rats given the high dose died and some at the medium dose showed initial cardiac lesions. Thus 4'-epidoxorubicin appeared less toxic than doxorubicin; in particular cardiac damage was much less evident in animals chronically injected with the new drug. PMID- 3862267 TI - Normal tear production and drainage. PMID- 3862268 TI - The effect of ageing and disease on tear constituents. AB - An ELISA method is described for measuring the age-related changes of tear lysozyme, lactoferrin, ceruloplasmin, IgA and IgG in normal eyes. The normal levels for these proteins at each age are compared with those from patients with dry and 'questionably dry' eyes, which each have individual profiles, as well as with patients suffering from ocular pemphigoid, chronic non-ulcerative blepharitis and meibomianitis. Results of tear lysozyme assays from patients on various beta-blockers are discussed with the suggested hypothesis that stimulation of beta-receptors per se in the human lacrimal gland is not required for tear protein secretion. The importance of other proteins present in the tear fluid is reviewed. PMID- 3862269 TI - The defence mechanism of the outer eye. PMID- 3862270 TI - Physical chemistry of the normal and disordered tear film. AB - The preocular tear film is viewed as a thin, mostly aqueous film covering a hydrophilic solid and bordered by a meniscus which is also supported by the solid. The aqueous layer is coated by an even thinner lipid layer. Part of the solid boundary is mobile and capable of compressing the lipid layer rapidly thereby simulating blinking. By the use of such a model, the properties of the tear film system can be described and its behavior can be predicted by applying the principles of interface science to the model. Gravity has a negligible effect on the tear film. Hydraulic flow of tears can only occur in the meniscus. The rupture of the tear film is attributed to lipid contamination of the supporting solid making its surface hydrophobic. Blinking compresses the lipid layer and removes the lipid-contaminated, hydrophobic mucus from the epithelium-tear interface. The instability of the preocular tear film, which can be caused by several factors, appears to be characteristic of all dry eye states irrespective of aetiology. PMID- 3862271 TI - Innervation of the conjunctiva. AB - A parasympathetic pathway from the facial nerve to the conjunctiva was confirmed. Many conjunctival nerve fibres were degenerated following pterygopalatine ganglion lesion in cynomolgus monkeys. Nerve terminal degeneration was found mainly in the large vessel walls and adjacent to the subepithelial capillaries. AChE positive nerve fibres of undenervated tissue, probably representing the cholinergic fibres of facial nerve origin, and sympathetic nerve terminals, identified by their small granular vesicle content, were similarly disposed in vessel walls. Hence conjunctival vessels, including capillaries, have a dual autonomic innervation. Intraepithelial terminals were sparse and no evidence of a specific goblet cell innervation was found. Human perilimbal conjunctiva displayed a similar distribution of nerve fibres to cynomolgus monkeys. PMID- 3862272 TI - Colour wide field specular microscopic investigation of corneal surface disorders. AB - Colour wide field specular microscopy (WFSM) may be used to examine different phases of corneal surface pathology in vivo. A soft contact lens facilitates colour differentiation of cell surface variations by interference. Pathologic states may be characterised by modifications in apparent cell colour, brightness, morphology and configuration. Cell brightness is altered by interference phenomena, cell surface irregularities (microprojections), homogeneity of substances covering cells, intracellular components and changes in indices of refraction at the interfaces between the cell surface and the tear layers. Colour photography has been helpful in deciding which intensity variations may be due to interference effects. PMID- 3862273 TI - Quantification and enzymic identification of conjunctival surface mucus. PMID- 3862274 TI - Changes of the tear film in dry eyes. AB - This paper describes the alterations in the structure of the tear film and its composition, which can lead to the dry eye syndrome. An attempt has been made to differentiate the individual components of these syndromes and Vogt's method is described as a further aid to diagnosis. PMID- 3862275 TI - Relationship of the dry eye to primary ocular surface disease. PMID- 3862276 TI - Dry eye in the dog and its treatment. AB - Keratoconjunctivitis sicca is a relatively common eye disease in the dog. The presenting signs are described and the aetiology due to canine distemper, trauma and hypothyroidism mentioned. A familial incidence in the West Highland White has been demonstrated, thirty-five per cent of two hundred cases occurring in this breed and of these cases over seventy per cent occurred in the female, the majority between 4 and 7 years of age. The indications are that keratoconjunctivitis sicca may be an autoimmune disease with similarities to Sjogren's syndrome. Keratoconjunctivitis sicca in the dog has also occurred following the use of sulphasalazine for the treatment of colitis. The operation of parotid duct transposition is described and its value in the dog discussed. PMID- 3862277 TI - Topical retinoid treatment for dry eye disorders. AB - We have demonstrated the clinical efficacy of topical all-trans retinoic acid ointment in the treatment of four severe cases of the following dry eye disorders: Keratoconjunctivitis sicca, Stevens-Johnson syndrome, drug-induced pseudopemphigoid, surgery-induced dry eye. In all four cases, impression cytology confirmed that improvements in symptoms, visual acuity, keratopathy, and Schirmer test resulted from reversal of the process of squamous metaplasia. This treatment represents the first nonsurgical approach with action directed specifically at the diseased ocular surface epithelia. PMID- 3862278 TI - Eledoisin--a successful therapeutic concept for filamentary keratitis. PMID- 3862279 TI - Other forms of treatment of dry eyes. PMID- 3862280 TI - Pst I polymorphism of the antithrombin III gene in a French population. AB - Pst I endonuclease fragment length polymorphism of the antithrombin III probe was studied in a French population. Among 25 subjects tested, 15 were found heterozygous at the Pst I site, so that this polymorphism might serve as a useful markers of antithrombin III gene in families with antithrombin III deficiency. PMID- 3862281 TI - Computerized neurocognitive evaluation. PMID- 3862282 TI - Pertussis revisited: West Virginia, 1979-1984. PMID- 3862283 TI - Erythema multiforme. PMID- 3862285 TI - [Austrian Society for Lung Diseases and Tuberculosis. 18th annual meeting. Steyr, 16-19 May 1985. Abstracts]. PMID- 3862284 TI - Chronic myelocytic leukemia as a secondary malignant condition in a patient receiving prolonged chemotherapy for ovarian carcinoma. PMID- 3862286 TI - Changes in membrane gangliosides: differentiation of human and murine monocytic cells. AB - Membrane ganglioside changes in murine peritoneal macrophages and the human promyelocytic leukemia cell line HL-60 have been assessed by two-dimensional thin layer chromatography. C3H/HeJ mice respond to protein-containing endotoxin but are hyporesponsive to protein-free endotoxin preparations. Compared to unstimulated resident cells, protein-containing endotoxin produced an alteration in the C3H/HeJ macrophage ganglioside pattern whereas protein-free endotoxin did not. In comparison, differentiation of HL-60 cells to a neutrophil-like cell by dimethylsulfoxide gave a ganglioside pattern similar to unstimulated HL-60 cells. However, differentiation of HL-60 cells by phorbol myristate acetate to macrophage-like cells results in a large increase in the monosialoganglioside GM3. The evidence presented indicates that discrete ganglioside changes occur in murine monocytes and HL-60 cells upon induction to cells with increased macrophage functions. PMID- 3862287 TI - Effect of protein synthesis inhibitors on leukocytic pyrogen-induced in vitro hypothalamic prostaglandin production. AB - In order to study the antipyretic effect of inhibitors of protein synthesis, hypothalamic tissue was incubated in vitro under controlled conditions and the amount of prostaglandin E2 (PGE2) measured in the supernatant medium. Rabbit anterior hypothalamic tissue was incubated with purified human leukocytic pyrogen (LP) and after 60 minutes the supernatant fluid was assayed for PGE2 by radioimmunoassay. Control tissue incubated with Eagle's medium (MEM) released elevated levels of PGE2; however, the addition of polymyxin B (PmxB), a cationic antibiotic which blocks the activities of bacterial endotoxins, significantly reduced PGE2. In addition, endotoxin added to MEM induced from the brain tissue PGE2 production which could be reduced by the addition of PmxB. Thus, commercial culture media such as MEM may contain sufficient amounts of endotoxin to stimulate brain PGE2 production in vitro. Purified human LP incubated with hypothalamic tissue in the presence of PmxB induced PGE2 production in a dose dependent fashion. This release could be reduced (p less than 0.001) by the presence of either cycloheximide or puromycin during incubation with LP. The addition of these inhibitors to unstimulated hypothalamic tissue incubations did not reduce background levels of PGE2. It is concluded that the antipyretic effect of protein synthesis inhibitors results in a specific decrease in LP-induced levels of PGE2. PMID- 3862288 TI - [Internal medicine oncology in the aged]. AB - Advanced age represents a restriction for the possibilities of internal oncology. A limited function of the organs, as well as the patient's lack of cooperation must be expected, thus complicating the control of the therapy. However, despite these aspects, advanced age alone is no reason for rejecting chemotherapy. If there is a chance for therapeutical success, it will last just as long as with young patients. Malignant disease in older patients allows a curative therapy only in exceptional cases. Therefore, a very accurate cost/benefit analysis should be carried out for each patient in cases of palliative treatment. PMID- 3862289 TI - [Assessment of implantation tests for control materials]. PMID- 3862290 TI - [Standardization of dental photographic methods]. PMID- 3862291 TI - [Human and psychological aspects of the orthodontic team]. PMID- 3862292 TI - [Carefully planned treatment of cross bites in social orthodontics]. PMID- 3862293 TI - [Discrepancy of tooth and jaw structures from the viewpoint of social orthodontics]. PMID- 3862294 TI - [The importance of motivation in wearing orthodontic appliances]. PMID- 3862295 TI - [The orthognator]. PMID- 3862296 TI - [Regulatory effect of bimaxillary appliances on the temporomandibular joint and the mandible]. PMID- 3862297 TI - [Numerical evaluation of malocclusion in study models of the mixed dentition]. PMID- 3862298 TI - [Development of the basic principles of treatment of clefts in the lip, alveolus and palate at the University Clinic for Maxillofacial Surgery in Ljubljana]. PMID- 3862299 TI - [Organization of ambulatory and hospital care for patients with cleft lip and palate at the University Clinic for Maxillofacial Surgery in Ljubljana]. PMID- 3862300 TI - [The effect of glucose on the distribution of labelled bacterial antigen during cellulose acetate electrophoresis]. PMID- 3862301 TI - [The prevalence, location and composition of enamel pearls in permanent molars]. PMID- 3862302 TI - [Concentrations of various trace elements in the enamel of primary and permanent teeth]. PMID- 3862303 TI - [Caries prevention in adolescents at the dental clinic level]. PMID- 3862304 TI - [Injuries to anterior teeth in children and adolescents, their causes and prevalence according to the patients' age]. PMID- 3862305 TI - [The role and value of gingival curettage in the treatment of periodontal disease]. PMID- 3862306 TI - [An example of the successfully treated patient with advanced periodontitis]. PMID- 3862307 TI - [Abrasion and selective grinding of teeth]. PMID- 3862308 TI - [Evaluation of soft tissue changes in the oral cavity during radiotherapy of head and neck malignancies using exfoliative cytology methods]. PMID- 3862309 TI - The effect of pigbel vaccine. PMID- 3862310 TI - Ovarian tumours in Papua New Guinea: relative frequency and histological features. AB - An analysis has been made of 447 ovarian tumours submitted for histological examination to the Department of Pathology, Port Moresby General Hospital, for the period 1978-1982. Ovarian tumours constituted 8% of all tumours submitted during this period. Of the ovarian tumours submitted 75% were benign. The ovarian tumours presented a wide range of histological features, which were analysed according to the accepted international classification. PMID- 3862311 TI - Malakoplakia of the gastrointestinal tract: report of cases seen in Papua New Guinea with review of literature. AB - Malakoplakia of the gastrointestinal tract is a rare condition, with only 38 cases reported in the world literature so far. In Papua New Guinea 2 cases have been seen in young patients. These cases are described and the literature briefly reviewed. PMID- 3862312 TI - Malaria and tropical splenomegaly syndrome in the Anga of Morobe Province. AB - The Hamtai speaking Anga of the Upper Watut valley have long been considered to be unique in their response to recurrent malaria. Given sufficient exposure, the vast majority develop tropical splenomegaly syndrome concomitantly with their acquisition of effective immunity, whereas elsewhere this disease occurs sporadically. The present study indicates that the Menya of the Tauri valley, a related Angan group, respond similarly, in terms of frequency and degree of gross splenomegaly. On the other hand, the Kapau valley, the traditional homeland of the Hamtai, lying between the Watut and Tauri valleys, remains for the most part free of malaria. It is suggested that all Anga will respond to recurrent malarial infection in the same atypical manner; and that this response results from lack of appropriate genetically-determined mechanisms for mounting efficient immune responses to this infection, significant exposure to which is a relatively recent event for these people. PMID- 3862313 TI - Possible aetiology of oral cancer in Papua New Guinea. AB - Oral cancer is the most common cancer seen in Papua New Guinea. Although there is a broad geographical correlation with betel chewing, there have been no analytical epidemiological studies and the aetiology remains poorly understood. A greater understanding of several putative risk factors and how they may interact is needed prior to any attempt to modify traditional customs. Although current strategies for primary prevention in India are based on the assumption that the risk of betel chewing is related to the tobacco in the quid, this cannot explain oral cancer in Papua New Guinea. In the latter, special epidemiological and laboratory investigations are needed to provide a scientific basis for future prevention. PMID- 3862314 TI - Grand multiparity: benefits of a referral program for hospital delivery and postpartum tubal ligation. AB - The maternal death rate is high in grand multiparas giving birth in remote villages in Milne Bay Province, Papua New Guinea. Such women are often reluctant to go to hospital for delivery. However, many of them have accepted the idea of going to hospital to await delivery and postpartum tubal ligation. We discuss the results and benefits of this program. 43% of grand multiparas suffered one or more complications during their hospitalization; 77% were sterilized. Considerable morbidity and mortality can be prevented by an active program for hospital management of grand multiparas. Costs of such early referral are at least partially offset by decreasing costs for late emergency transfer of obstetric disasters. 47% of emergency air charters for obstetric complications were for grand multiparas. Numbers of such emergency transfers have decreased as increasing numbers of grand multiparas have been referred early for delivery and tubal ligation. PMID- 3862315 TI - A study of the effectiveness of mebendazole and pyrantel pamoate as a combination anthelmintic in Papua New Guinean children. AB - A mixture of 150 mg mebendazole and 30mg pyrantel pamoate was given on 3 consecutive or near-consecutive days to 70 children infected with one or more of Necator americanus, Ascaris lumbricoides, Strongyloides stercoralis, S. fuelleborni-like and Trichuris trichiura. This treatment had an efficacy of 95 per cent for N. americanus infections, 100 per cent for A. lumbricoides, 57 per cent for Strongyloides spp., and 75 per cent for T. trichiura. The results indicate that the treatment given is effective against the infections of N. americanus and A. lumbricoides but is only partially effective for Strongyloides and T. trichiura infections. PMID- 3862316 TI - Inhalation hazards of tropical "pea shooters". PMID- 3862317 TI - Regional variation of oral cancer in Papua New Guinea. AB - Data from the Papua New Guinea Tumour Registry for the period 1979 to 1983 were examined for regional differences in the apparent incidence of oral cancer. The age-standardised incidence rates showed a ten-fold variation across the country, and only part of this variation could be explained by differences in availability of health services and in overall cancer-reporting rates. Incidence rates for oral cancer are significantly lower in the highlands than in the lowland regions of Papua New Guinea. The male: female ratio for oral cancer was greater than that for all cancer cases. The ways in which differences in betel- chewing and in tobacco and alcohol consumption may contribute-to these trends are discussed. PMID- 3862318 TI - [Bulimia]. AB - For the last decade the bulimia syndrome, known since Antiquity, has been observed to be on the increase, predominantly among females, the onset of the disease occurring after puberty. Symptoms, connections with anorexia nervosa, aetiologic and pathogenetic aspects, and therapeutic approaches are being discussed. PMID- 3862319 TI - [Abortion following prenatal diagnosis of genetic defects]. AB - 71 abortions after prenatal diagnosis of genetic defects have been performed between 1974 and 1983. Mean duration of pregnancy was 21 weeks, mean hospital stay 10 days. In 28 per cent an intraamnial prostaglandin induction was done, which was successful in 85 per cent. Extraamnial prostaglandin application was combined with oxytocin in 51 per cent, which was followed by abortion in 51 per cent within 26 hours. Primary hysterectomy was performed in 4 per cent and rupture of the membranes combined with oxytocin infusion in 6 per cent. Complication rate overall was 20 per cent. In 6 per cent the following complications have been observed: 1 perforation with lesion of intestine, 1 cervical rupture with hemorrhage, 1 colpaporrhexis, 1 shock. Pelveoperitonitis and rupture of the symphysis pubis in one case each (3 per cent). Other complications, like fever, hemorrhages and thrombophlebitis have been observed in 11 per cent. Midtrimester abortion after prenatal diagnosis of genetic defects should be done only in experienced clinics. Special importance in prophylaxis of complications of abortion has chorion biopsy to predate prenatal diagnosis in the 6th till 12th gestational week. PMID- 3862320 TI - [Action mechanism of methyl 6-[3-(2-chloroethyl)-3-nitrosoureido]-6-deoxy-alpha-D glucopyranoside (MCNU) in leukemic cells]. PMID- 3862321 TI - [Abnormal hemopoiesis in juvenile chronic myelogenous leukemia: phagocytic cell dependent endogenous colony formation by peripheral blood and bone marrow cells]. PMID- 3862322 TI - [Monoclonal antibodies (NU-N1 and NU-N2) reactive with common acute lymphoblastic leukemia antigen]. PMID- 3862323 TI - [Prostaglandin E2 production by mononuclear cells of peripheral and marrow blood of patients with malignant lymphoma]. PMID- 3862324 TI - HLA antigens in patients with unexplained hepatitis following halothane anesthesia. AB - We examined HLA-A,B,C and DR locus antigens in 38 Japanese patients who had recovered from halothane hepatitis. The patients were divided into two subgroups, i.e. jaundice and non-jaundice groups, because the clinical features were quite different in each. DR2 was positive in 14 (58.3%) of 24 patients with jaundice, compared with 281 (33.6%) of the 837 Japanese healthy controls (chi-square with Yates' correction = 5.30, relative risk = 2.77, P less than 0.025). Conversely, Bw44 was increased in non-jaundice patients (50.0%), compared with 157 (12.7%) of the 1234 Japanese healthy controls (chi-square with Yates' correction = 13.75, relative risk = 6.86, P less than 0.001). The haplotype frequency (Hf) of Aw24 Bw52-DR2 was high in the patients with jaundice (Hf = 0.2362), while it was zero in the patients without jaundice (P less than 0.0042). These data suggest that the two groups of halothane hepatitis have different genetic backgrounds. PMID- 3862325 TI - Abstracts. 18th Congress of the Scandinavian Society of Anaesthesiologists. Reykjavik, Iceland, June 25-29, 1985. PMID- 3862326 TI - Mathematical models for developmental changes. AB - Developmental changes are generally reflected in gradual increase in size or number, or both. These morphological changes will be accompanied by physiological changes. In a first-order approximation one may state that the rate of change at any time is proportional to the value of the parameter in question, which leads to exponential changes. More complex models have been devised for so-called growth processes. A number of these models are reviewed here and their application to developmental changes is discussed. PMID- 3862327 TI - Electrical stimulation of the auditory system in animals profoundly deaf from birth. AB - Animals homozygous for the recessive deafness gene (dn/dn) have been used to study central responses to modiolar or round window electrical stimulation. Inferior colliculus evoked responses to contralateral constant current pulses are larger in mutants than in controls. In mutants, responses are largest in animals aged 5-7 months, compared with animals aged 42-50 days or 13.5-19 months. The spiral ganglion cell density is normal in the youngest group, but decreases significantly in older animals. Electrical stimulation of the round window is less effective than modiolar stimulation. Single unit recordings suggest that the larger evoked responses in deafness mice are produced by stronger discharges in neurones, rather than greater synchrony of discharge. The deafness mutation appears to provide a useful animal model for studying electrical stimulation of a central pathway which has never received stimulus-related input. PMID- 3862328 TI - Strategies and problems for future studies of auditory development. PMID- 3862329 TI - Evoked potentials as indicators of auditory maturation. AB - Evoked potentials are used widely to quantify the state of maturation of the auditory nervous system both in humans and animals. In animals a comparison between the rate of maturation obtained with evoked potential recording and with single unit recording can be made. In addition comparison with results from behavioural studies is possible. The presently available material suggests qualitatively similar time courses for single unit, evoked potential and behavioural data in the cat. However, quantitatively there are quite sizeable differences. Applications in humans only allow comparison with behavioural data, the amount and reliability of which at the moment are small. On the basis of the animal results an optimistic view point may be taken but diversity between some large studies on maturation of the human auditory evoked potentials do not substantiate this at the moment. PMID- 3862330 TI - Morphology, synaptology and electrophysiology of the developing cochlea. AB - The development of synapses clearly differentiates the two kinds of cochlear receptors inner (IHC) and outer (OHC) hair cells. An adult-like pattern of innervation can be seen very early below the IHCs: both afferent and efferent (mainly axo-dendritic) synapses are formed before the onset of function. At the OHC level, drastic changes occur: numerous afferent dendrites retract as the large efferent endings arrive and synapse with the hair cell. This synaptic OHC remodelling coincides with maturation of compound action potential (AP) parameters, such as the "S" -shape of the input-output curves and the sharpening of AP tuning curves. PMID- 3862331 TI - Applications of surface-recorded auditory evoked potentials for the early diagnosis of hearing loss in neonates and premature infants. AB - The recording of Auditory Evoked Potentials (AEPs) in adults provides a non invasive means of assessing the auditory system at its peripheral and central levels. In neonates and premature babies, technical, methodological and physiological constraints prevent the clinician from simply extrapolating from the adult data. Those constraints are discussed. In the light of this discussion, some limits on the validity of AEP recording in very young patients are proposed. PMID- 3862332 TI - Evoked acoustic emission: clinical application. AB - Stimulated acoustic emissions were recorded in response to tonal stimuli at 60 dB p.e. SPL in a small group of normal-hearing adults. Power spectral analysis reveals that the evoked activity from each ear contains energy in preferential frequency bands and the change of stimulus frequency has only a minor effect on the power spectra, i.e. the maximum jumps from one spectral peak to another. Experiments with deconvolution demonstrate that the emission generating system at least at a fixed intensity can be regarded as being linear and characterized by its impulse response which is similar to the emission evoked by click stimuli. It is concluded that significant information is obtained by the click rather than by the tonal stimuli. The click-evoked emissions were also recorded from both ears in a consecutive series of 100 full-term and otherwise normal babies 2-4 days after birth. The emission amplitudes were of the same order of magnitude as those previously found in normal-hearing adults. Cross-correlation analysis was performed in order to evaluate reproducibility and the combination of amplitudes and correlation coefficients from supra-threshold recordings and the no-stimulus recordings reveals presence of a true emission from all ears tested. It is concluded that the cochlear echo can be recorded in normal-hearing newborns with an extremely low rate of type I errors. PMID- 3862333 TI - Use of behavioural tests in early diagnosis of hearing loss. AB - Behavioural tests for infant hearing loss are surveyed. Two automated tests for newborns are described. Early results of validity studies indicate that they are promising techniques. The results of research on 1 to 5 month olds is summarized. The reasons why clinical assessment at this age is not often attempted are discussed. Finally, distraction test methods and their validity are mentioned. The need for repeated testing for infant hearing loss and continued research into the reliability and validity of existing assessment techniques is emphasized. PMID- 3862334 TI - Lymphomatoid granulomatosis. Light microscopic, electron microscopic and immunohistochemical study. AB - A case of lymphomatoid granulomatosis (LYG) involving the lungs, skin, stomach, and possibly the left kidney in a 60-year-old man is presented. The infiltrates in the lungs, stomach, and skin showed a polymorphic appearance, and consisted predominantly of lymphocytes of mature and blastic form and of a few neutrophils, plasma cells, and histiocytes. Most lymphoid cells showed irregularly shaped nuclei and clustered dense bodies, characteristics indicative of T lymphocytes. An immunohistochemical study confirmed the T cell origin of the lymphocytes; i.e. they were positive for Leu-1, Leu-3a and Ia-like antigens but negative for Leu-2a antigen and the antibodies against light chains. The homogeneity of the major population of infiltrates in LYG indicates that at least some forms of LYG may be neoplastic or pre-neoplastic lymphocytic disorders which may ultimately progress to malignant lymphoma. PMID- 3862335 TI - Adrenergic nervous control of resistance and capacitance vessels. Studies on isolated blood vessels from the rat. AB - A systematic comparison of neurogenic responses from consecutive sections of the cardiovascular system has not yet been performed under the well-defined conditions that an in-vitro system can offer. The present investigation aimed at analysing the neuroeffector properties of different isolated vessels, mounted in a myograph, where isotonic and isometric responses to transmural nerve stimulation could be determined. The vessels investigated were the abdominal aorta and caval vein, the superior mesenteric artery and vein, and 200-micron arteries and corresponding veins from the mesenteric arcades, the latter representing true resistance and capacitance vessels, respectively. Further, the vascular adrenergic innervation was visualized by Hillarp-Falck's formaldehyde fluorescence technique as well as immunohistochemical methods. In all vessels the innervation was confined to the adventitio-medial border. The responses to single neurogenic impulses differed markedly between the vessels, being distinct and rapid in the small, slow in the intermediate vessels, and absent in the aorta and the caval vein. This was in contrast to the responses to direct electrical activation of the muscle, which were quite rapid in all vessels. The organisation of the neuromuscular transmission thus has a marked influence on the effector response. The maximal neurogenic responses parallelled the innervation density, being greatest in the small arteries and least in the abdominal aorta. The frequency for half-maximal response appeared to depend also on other factors, such as velocity of contraction and relaxation of the smooth muscle. Of the small vessels, the veins were relatively more activated by low frequencies. Stimulation with an irregular impulse pattern, derived from human sympathetic nerve discharge, had greater effects than the corresponding constant-frequency stimulation on the resistance arteries; the small veins responded equally to either pattern. This difference could be related to the observed frequency response relations around the average frequency used. The effects of inhibition of neuronal amine uptake on neurogenic responses and on responses to exogenous noradrenaline differed considerably, particularly in the resistance arteries. Here the magnitude of the neurogenic responses were hardly affected by this inhibition, whereas responses to exogenous noradrenaline were strongly enhanced. On its own, blockade of prejunctional adrenergic alpha 2-receptors had little effect on either response, but blocking both alpha 2-receptors and reuptake clearly potentiated the neurogenic responses.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3862336 TI - The mechanism of leukoregulin enhancement of target cell susceptibility to NK cell mediated cytotoxicity in humans. PMID- 3862338 TI - Acute myelomonocytic leukemia (M-4 subtype) with abnormal marrow eosinophilia and a normal chromosome 16. AB - A variety of chromosome 16 abnormalities, including inversion, deletion, and translocation in patients with acute myelomonocytic leukemia and abnormal marrow eosinophilia have been reported recently. The authors have identified an AMML patient who had a normal karyotype in 50 metaphases. In particular, chromosome 16 was closely examined for abnormality and was found to be entirely normal. In addition, the authors describe new cytochemical and ultrastructural features of the associated abnormal eosinophils. PMID- 3862337 TI - Coronary heart disease risk factors among religious groupings in a Jewish population sample in Jerusalem. AB - The hypothesis that plasma lipids, blood pressure, smoking and dietary intake differed according to degree of religiosity was examined in a sample of Jewish residents of Jerusalem. Religiosity was classified according to the subject's self-ranking of his perceived degree of religiosity. Prevalence of smoking, and plasma levels of cholesterol, triglycerides, and low-density lipoprotein cholesterol were higher in secular participants than in the orthodox group. No differences in blood pressure and in high-density lipoprotein cholesterol were observed. Secular subjects consumed more total fat, more saturated fatty acids and less carbohydrate than religious subjects. These differences in nutrient intake among the religious groups reflected differences in their food selection, notably consumption of dairy products. These findings of parallel differences in plasma lipids and in dietary intake are consistent with the differing incidence of myocardial infarction in the religious groups which has been shown in the Israeli population. PMID- 3862339 TI - Acute granulocytic leukemia following systemic lupus erythematosus. AB - Corticosteroids, alkylating agents, and other immunosuppressive drugs are currently being used to treat a variety of systemic diseases. An increased incidence of acute granulocytic leukemia (AGL) has been noted in patients receiving such therapy. It is unclear whether AGL is the direct consequence of drug treatment or whether it represents a new expression of the natural history of the primary disorder. This report describes two cases of systemic lupus erythematosus (SLE) treated with immunosuppressive agents. Acute granulocytic leukemia developed and was the underlying cause of death in both patients. PMID- 3862340 TI - Anorexia nervosa and bulimia: an activity-oriented approach. AB - In recent years, there has been a growing trend away from a dogmatic adherence to any one approach in the treatment of eating disorders. This paper adds the new element of practice in relation to cognitive change. The activity-oriented approach outlined here stresses that patients with anorexia nervosa or bulimia must maintain responsibility for their own food intake throughout treatment. The key role of the occupational therapist in the treatment team is outlined, and suggestions for assessment and management of this type of patient are given. PMID- 3862341 TI - The control of condylar growth: an experimental evaluation of the role of the lateral pterygoid muscle. AB - The present study used 21 male albino rats to test the hypothesis that lateral pterygoid traction regulates the growth of the mandibular condyle. The condyles, the rami, and the top of each glenoid fossa were marked with metallic implants, and, following bilateral section of the condylar neck, one lateral pterygoid muscle was extirpated. On the basis of the literal details of Petrovic's cybernetic model, it was assumed that the continued forward growth of the midface and the backward translation of the glenoid fossa would combine to produce a progressive disturbance in the buccal occlusion that would, in turn, generate a reflex contraction of the remaining lateral pterygoid muscle. Initially, however, growth of the isolated condyles would have little impact on the spatial position of the rest of the mandible. As a result, the condyles on the side with the intact lateral pterygoid should grow for a time at a maximal, open-circuit rate, whereas the experimental condyle, deprived of all muscle traction, should show only a minimal "commanded" rate of growth. The serial change in the position of the condylar and ramal implants was assessed cephalometrically for 6 weeks, and between-sides differences were analyzed by randomized block analysis of variance. The presence or absence of the lateral pterygoid muscle had no significant effect on the anteroposterior position of the condylar implants and only a slight, transitory effect on their vertical position. The translation of the ramal implants, however, was greatly affected by the condylotomy. On both control and experimental sides, the mandible collapsed upward and backward until contact between the growing condyle and ramus had been achieved, whereupon a downward and forward pattern of translatory growth was re-established. Although it could not be shown that lateral pterygoid traction per se is a significant factor in the growth of isolated condyles, it was concluded that the condyle is vitally important to the translatory growth of the mandible as a whole. On the basis of these data and the current literature, a simple hypothesis was advanced for the control of condylar growth by the ongoing pattern of functional loading and for the role of this growth in the normal downward and forward displacement of the rest of the mandible. PMID- 3862342 TI - Functions of condylar translation in human mandibular movement. AB - Mandibular movement in many mammals is controlled by a pure hinge joint. Since condylar translation is a structurally complex adaptation and a common source of human clinical dysfunction, there have been many attempts to evaluate the biologic significance of human condylar translation. The three hypotheses concerning condylar translation considered in this study are (1) that it results in a center of rotation of the mandible in the area of the mandibular foramen, minimizing displacement of the inferior alveolar neurovascular bundle during mandibular movement, (2) that it reduces the amount of stretch in the masseter muscle during opening, allowing the muscle to function within an efficient portion of the muscle fiber length-tension curve, and (3) that it prevents compromise of the airway and other cervical structures by the tongue and mandible during opening. Ten subjects with cephalometric radiographs taken both in centric relation and with the mandible wide open are evaluated. The movement of the mandibular foramen, the stretch of the masseter muscle, and the proximity of the tongue and mandible to the airway are compared during actual opening and when mandibular opening is modeled as a pure hinge movement. The results indicate that condylar translation performs all three functions. However, a review of other data leads to the conclusion that airway preservation in human beings may be a more critical problem and a more essential function of condylar translation than either reducing movement of the mandibular foramen or reducing stretch of the masseter muscle. PMID- 3862343 TI - Long-term periodontal status of teeth moved into extraction sites. AB - The present study was undertaken to assess the long-term periodontal status adjacent to teeth that had been moved orthodontically into extraction sites. Twelve persons with a mean age of 29.2 +/- 5.7 (SD) years, who had completed orthodontic therapy at least 10 years previously, were examined. The orthodontic treatment had included bilateral premolar extraction in only the maxilla. Interproximal tooth surfaces in the maxilla adjacent to the extraction sites (study group) were compared to corresponding tooth surfaces in the mandible (control group) with respect to plaque, visual inflammation, bleeding after probing, pocket depth, gingival recession, loss of connective tissue attachment, radiographic bone height, and root resorption. Statistical comparisons were made via analyses of variance and t tests. There were no differences between the groups for any clinical parameter except the presence of less visual inflammation in study subjects. Radiographically, there were no differences in crestal alveolar bone levels measured from the cementoenamel junction. Bone height evaluation by the Bjorn method showed less alveolar support in the study group. However, this was due to the influence of root resorption rather than an effect on crestal height. It was concluded that orthodontic movement of teeth into extraction sites had been without detrimental effect upon the adjacent periodontal status. PMID- 3862344 TI - Longitudinal soft-tissue profile changes: a study of three analyses. AB - The purpose of this study is to describe the changes in six soft-tissue parameters that are commonly used by orthodontists in their diagnosis and treatment planning as well as in the evaluation of profile changes that occur with growth and orthodontic treatment. The parameters evaluated were two angles of facial convexity, the Holdaway soft-tissue angle, Merrifield's Z angle, and Rickett's esthetic line and lip relationships. The subjects of this study consisted of 20 males and 15 females for whom lateral cephalograms taken between the ages of 5 and 25 years were available. Descriptive statistics for the absolute and incremental changes are presented on a yearly basis between the ages of 5 and 17 years and at adulthood. Growth profile curves were constructed for each parameter, and regression equations were developed to describe the age related changes in the six parameters for both males and females. The present findings indicated that the male and female growth profile curves were significantly different, except for the angle of facial convexity (excluding the nose) and Merrifield's Z angle. One of the conclusions that can be derived from this investigation is that the two angles of soft-tissue facial convexity, the Holdaway soft-tissue angle, and Merrifield's Z angle do not behave in a similar manner with age. Therefore, the clinician needs to use a number of soft-tissue parameters to better evaluate the soft-tissue profile. A limited number of cephalometric standards have been identified for each parameter. These standards can be used by the orthodontist as representative of the change between the age of 5 years and adulthood. This should enable the orthodontist to treat the patient to soft-tissue norms that are age- and sex-specific, rather than to an adult standard. PMID- 3862345 TI - The emotional impact of orthognathic surgery and conventional orthodontics. AB - Previous research by the authors has pointed to depressive reactions among orthognathic surgery patients during the fixation-removal stage and up to 9 months later. However, less is known about emotional shifts among persons who choose to undergo conventional orthodontic treatment after considering surgical orthodontics. In the current study, a standard measure of mood states was applied to 90 surgical patients and 66 who had considered surgery but decided against it. Of these, 33 were undergoing orthodontic treatment and 33 were having no treatment. The mood scale and measures of personality were first applied before surgery and then during orthodontic treatment, just after surgery, at fixation removal, and 6 months after surgery. Nonsurgical respondents completed questionnaires at the same time as their matched surgical respondents. Scores on tension and fatigue increased significantly among surgical patients from before surgery to immediately after surgery and dropped to presurgical levels when fixation was removed. Anger-hostility increased at fixation removal but declined within 5 months. Postsurgical discomfort, pain, and paresthesia, and interpersonal and oral function problems were correlated with postsurgery emotional state. On the later questionnaires, which corresponded to the later periods of orthodontic treatment, patients who had opted for conventional orthodontic treatment reported that they experienced greater depression, anger, and tension. These patients may be particularly vulnerable to emotional problems because their orthodontic treatment may be more complex and of longer duration than that of the typical orthodontic patient. These results point to the importance of continued psychological support for both orthodontic and surgical patients throughout their course of treatment. PMID- 3862346 TI - Linear evaluation of the development of sagittal jaw relationship. AB - In cephalometrics both angular and linear variables have been proposed in the analysis of sagittal jaw relationship and jaw position. Angular measurements can be erroneous as a result of changes in facial height, jaw inclination, and total jaw prognathism; linear variables can be affected by the inclination of the reference line. In the present article, a method of geometric correction of linear analysis of sagittal jaw relationship and jaw prognathism (based on a standardized occlusal plane) is described. The method is applied to radiographic material (from King's College Hospital, London) of 33 children who, at the age of 19, exhibited Class I occlusal patterns. While uncorrected linear measurement suggested stability of the sagittal jaw relationship from the age of 11 to 19 years, the geometrically corrected value demonstrated a marked reduction in sagittal jaw relationship. The method is developed further to demonstrate the increase in jaw prognathism measured as lined parameters with origin at point sella, the results illustrating again the advisability of correction of geometric errors. PMID- 3862347 TI - Response to activator treatment in Class II malocclusions. AB - A clinical study was designed to disclose the effects of activator treatment in the correction of Class II malocclusions. The rationale for the use of the activator appliance was based on the premise that correction of distocclusion can be achieved by inhibition of forward growth of the maxilla, inhibition of mesial migration of maxillary teeth, inhibition of maxillary alveolar height increase and extrusion of mandibular molars, increased growth of the mandible, anterior relocation of the glenoid fossa, mesial movement of mandibular teeth, and combinations of these effects. The appliance, as designed for this study, could potentially have an effect on all of these factors. Measurements were obtained from cephalometric head films obtained at 6-month intervals. Matched-pairs analyses of control versus treatment change after 6 months and after 1 year of treatment were done on 36 and 29 pairs, respectively. Pretreatment versus treatment changes were analyzed on 33 subjects by means of the spline regression analysis; posttreatment versus treatment changes were analyzed on 18 subjects by means of the Student Newman-Keuls multiple comparison test. The matched-pairs analyses of mean values demonstrated significant reduction in forward growth of the maxilla, uprighting of the maxillary incisors, reduced overjet, leveling of the mandibular occlusal plane, improved molar relationship, downward and forward relocation of the glenoid fossae, increased advancement of all mandibular structures, increased face profile angle, and increased lower face height. The two longitudinal analyses yielded similar findings, but some differences were noted. Because rather severe dental malocclusions were corrected, the slight average inhibition of maxillary growth and the anterior relocation of glenoid fossae alone could not account for the correction of the Class II dental arch relationship. It was therefore concluded that, in addition to the statistically significant changes, smaller changes occurred in several areas without being consistent enough or of a large enough magnitude to become statistically significant in the analyses of mean values. Comparison of group averages may mask treatment effects that significantly contribute to the correction of malocclusions in individual cases. PMID- 3862348 TI - A reassessment of force magnitude in orthodontics. AB - The relationship between the force magnitude delivered by orthodontic appliances and the rate of orthodontic tooth movement is controversial. This paper critically reviews the experimental data base that has shaped this controversy and graphically presents four hypotheses proposed to represent the relationship between force magnitude and the rate of tooth movement. The clinical implications of each hypothesis for treatment planning and space-closing mechanics are discussed. The authors' analysis of the data from six heavily cited clinical studies in the orthodontic literature appears to support one of the four proposed hypotheses (No. 4, Fig. 2). Acceptance of this hypothesis leads the clinician to a rational approach in manipulating the final position of teeth. Anchorage can be conserved by means of treatment strategies that reduce stress magnitudes in the periodontium of the posterior teeth while maximally efficient stress is maintained on the anterior teeth. Appliances with low load-deflection rates and relatively constant moment/force ratios allow the clinician to take advantage of the type of tooth movement proposed in this hypothesis. PMID- 3862349 TI - Re: The quadrilateral analysis. PMID- 3862350 TI - Phorbol ester stimulation of active anion secretion in intestine. AB - Phorbol 12,13-dibutyrate (PDB) stimulates electrogenic anion secretion in rabbit and chicken distal ileum. The 50% effective dose in each case was 15 nM, and the maximal short-circuit current (Isc) responses seen at 10(-6) M were 20 and 140 microA/cm2, respectively. Isc was also stimulated by the diacylglycerol 1-oleoyl 2-acetyl glycerol (10(-5) M) but not by the inactive phorbol ester analogue 4 alpha-phorbol 12,13-didecanoate. Removal of Ca from the serosal bathing medium and pretreatment of tissues with atropine (10(-6) M) or tetrodotoxin (2 X 10(-7) M) did not affect PDB-stimulated responses. PDB also did not alter basal intracellular free Ca levels in isolated chicken enterocytes loaded with quin 2 or basal adenosine 3',5'-cyclic monophosphate levels in intact tissues from rabbit and chicken. In the presence of PDB, Ca- and phospholipid-dependent phosphorylation of several proteins in particulate and soluble fractions from isolated chicken enterocytes were seen. Pretreatment of chicken and rabbit tissues with indomethacin or mepacrine inhibited the Isc responses to PDB and carbamylcholine, suggesting a role for prostaglandins. These results suggest that electrogenic anion secretion stimulated by phorbol esters and diacylglycerol may be mediated by activation of protein kinase C. PMID- 3862352 TI - Epidemiologic evaluation of screening for risk factors: application to genetic screening. AB - To assess the usefulness of screening for risk factors, we derived arithmetic relationships between screening parameters (sensitivity, specificity, and positive predictive value PPV) and risk factor frequency, disease frequency and relative risk. We evaluated these relationships in the special case of genetic markers and disease susceptibility. It can be shown that even in the face of very large relative risks, sensitivity and positive predictive value are affected by the relative magnitude of disease and genetic marker frequencies. When the genetic marker is less frequent than the disease, PPV increases with increasing relative risk but sensitivity remains low. When the genetic marker is more frequent than the disease, sensitivity increases with increasing relative risk but PPV remains low. When marker and disease frequencies are equal, both PPV and sensitivity increase with increasing relative risks, but very high relative risks (greater than 100) have to be obtained for rare diseases. Depending on the goals of the screening program, these relationships can be used to predict the relative magnitudes of false positives (low PPV) and false negatives (low sensitivity). This approach can be generalized to evaluate nongenetic risk factors in screening programs as well. PMID- 3862353 TI - [Safety in anesthesiology and intensive care: safety of the equipment]. PMID- 3862354 TI - Hazard with Penlon Intermed humidifier. PMID- 3862351 TI - Kinin effects on electrogenic ion transport in primary cultures of pig renal papillary collecting tubule cells. AB - Confluent monolayers of pig renal papillary collecting tubule (RPCT) cells were formed on Millipore filters coated with collagen. They were clamped in Ussing type chambers and used to measure short-circuit current (SCC). The monolayers had low potentials (0.1 mV) with the basolateral side positive. Small inward currents flowed under short-circuit conditions. Increases in SCC were obtained following addition of a number of agents. Receptors associated with SCC changes were disposed as follows: for kinins (e.g., lysyl-bradykinin) they were present on both sides of the tissue, while those for arginine vasopressin and norepinephrine were present on the basolateral side only. Epithelia responded to PGE2 added to the apical or basolateral face of the tissue; application to one side prevented the response from the contralateral side. The tissues also responded to forskolin, an activator of adenylate cyclase, with a sustained inward current that was sensitive to furosemide. Similar sustained inward currents were recorded following exposure to 8-bromoadenosine-3',5'-cyclic monophosphate (BrcAMP). Responses to kinins were attenuated by inhibition of fatty acid cyclooxygenase with either indomethacin or piroxicam or by replacing chloride with impermeant ions. If the SCC was first increased with forskolin, BrcAMP, or norepinephrine, the kinin effects on SCC were either abolished or reversed. It is concluded that kinin can cause chloride secretion in RPCT monolayers, possibly via a prostaglandin or a prostaglandin-adenylate cyclase mechanism. Secondary effects of kinin, exposed by first raising tissue cAMP levels, are not precluded. PMID- 3862355 TI - AIDS antibody screening test. PMID- 3862356 TI - Abstracts of papers read at the 19th International Conference on Animal Blood Groups and Biochemical Polymorphisms. (Gottingen, FRG, 22-27 July 1984). PMID- 3862357 TI - Experimentally induced phenylbutazone toxicosis in ponies: description of the syndrome and its prevention with synthetic prostaglandin E2. AB - Phenylbutazone (PBZ) toxicosis was induced in 9 ponies to further define the clinical and pathologic changes occurring with this syndrome. Six additional ponies were treated with PBZ and a synthetic prostaglandin E2 to determine the role of prostaglandins in the pathogenesis of PBZ toxicosis. Ponies given only PBZ exhibited CNS depression, anorexia, weight loss, diarrhea, cyanotic mucous membranes, and oral ulcers. Total serum protein concentration gradually decreased during the 10-day treatment period. Marked mucosal atrophy, focal erosions, and ulcers characterized the lesions in the alimentary tract. Ponies given PBZ and prostaglandin E2 remained clinically healthy and did not develop hypoproteinemia or mucosal atrophy. A few erosions were seen, but ulcers were not observed. The results of the present study indicate that mucosal atrophy is a characteristic lesion of PBZ toxicosis. It is also evident that inhibition of prostaglandin synthesis has an important role in the development of this syndrome. PMID- 3862358 TI - The revised French-American-British classification of acute myeloid leukemia: is new better? PMID- 3862359 TI - Proposed revised criteria for the classification of acute myeloid leukemia. A report of the French-American-British Cooperative Group. PMID- 3862360 TI - HLA and insulin dependent diabetes mellitus in Singaporean Chinese. AB - Singaporean Chinese IDDM was significantly associated with AW33, BW58, DR3 and DR4. AW33, BW58 and DR3 being in strong linkage disequilibrium among the Chinese, were associated most strongly with IDDM whose onset was less than or equal to 10 years. The strength of this association showed a significant inverse relationship with age of onset. The frequency of DR4 was significantly elevated on in the 11 20 year IDDM group. The importance of DR3 in Chinese IDDM was also reflected in the observations of joint occurrences of DR antigens. In the less than or equal to 10 years subgroup, the significant association were either DR3/DRW9, DR3/DR4 or DR3/BLANK. In the 11-20 years subgroup, DR4 appeared to be more important and DR4/DR3 and DR4/BLANK were strongly associated with IDDM in this subgroup. PMID- 3862362 TI - Purification and characterization of bile salt sulfotransferase from human liver. AB - Bile salt sulfotransferase, the enzyme responsible for the formation of bile salt sulfate esters, was purified extensively from normal human liver. The purification procedure included DEAE-Sephadex chromatography, taurocholate agarose affinity chromatography, and preparative isoelectrofocusing. The final preparation had a specific activity of 18 nmol min-1 mg protein-1, representing a 760-fold purification from the cytosol fraction with a overall yield of 15%. The human enzyme has a Mr of 67,000 and a pI of 5.2. DEAE-Sephadex chromatography of the cytosol fraction revealed only a single species of activity. The limiting Km for the sulfuryl donor, 3'-phosphoadenosine-5'-phosphosulfate (PAPS), is 0.7 microM. The limiting Km for the sulfuryl acceptor, glycolithocholate (GLC), is 2 microM. Reciprocal plots were intersecting. Product inhibition studies established that adenosine 3',5'-diphosphate (PAP) was competitive with PAPS (Ki = 0.2 microM) and noncompetitive with respect to GLC. GLC sulfate was competitive with GLC (Ki = 2.2 microM) and noncompetitive with respect to PAPS. Also, 3 ketolithocholate, a dead-end inhibitor, was competitive with GLC (Ki = 0.6 microM) and noncompetitive with respect to PAPS. Iso-PAP (the 2' isomer of PAP) was competitive with PAPS (Ki = 0.3 microM) and noncompetitive with GLC. The cumulative results of the steady-state kinetics experiments point to a random mechanism for the binding of substrates and release of products. The purified enzyme displays no activity toward estrone, testosterone, or phenol. Among the reactive substrates tested, the Vmax/Km values are in the order GLC greater than 3-beta OH-5-cholenic acid greater than glycochenodeoxycholate greater than glycocholate. p-Chloromercuribenzoate inactivated the enzyme. Either PAPS or GLC protected against inactivation, suggesting the presence of a sulfhydryl group at the active site. PMID- 3862361 TI - Susceptibility of Legionella pneumophila to ofloxacin in vitro and in experimental Legionella pneumonia in guinea pigs. AB - The antimicrobial activity of ofloxacin was tested against 15 standard strains and 37 clinical and environmental strains of Legionella pneumophila by agar dilution susceptibility studies with a new growth medium. The ofloxacin MICs were inoculum dependent and ranged from 0.03 to 0.125 microgram/ml. The antibacterial activities of other agents tested relative to ofloxacin were rifampin greater than ofloxacin greater than josamycin greater than pipemidic acid. Ofloxacin, at concentrations equal to or greater than 0.05 microgram/ml, inhibited the growth of L. pneumophila grown in human monocytes. The therapeutic efficacy of ofloxacin in experimental guinea pig L. pneumophila pneumonia was greater than that observed with erythromycin or josamycin therapy; it was less effective than was rifampin. Ofloxacin was very active against intracellular L. pneumophila in these experiments and should be studied in the therapy of human Legionnaires disease. PMID- 3862363 TI - Isotretinoin vs etretinate therapy in generalized pustular and chronic psoriasis. AB - The clinical response to isotretinoin (13-cis-retinoic acid) in 11 patients with generalized pustular psoriasis was evaluated. Control of pustulation and systemic symptoms was achieved in ten cases, but additional therapy was required to produce complete clearing of all psoriatic lesions. Also, the efficacy of isotretinoin and etretinate in the treatment of chronic plaque psoriasis was compared in 29 patients. Isotretinoin was found to be less effective than etretinate in the treatment of chronic plaque psoriasis. PMID- 3862365 TI - Human filariasis in two forest villages in Maniema (Kivu, Zaire). PMID- 3862364 TI - Cutaneous xanthomas associated with chronic myelomonocytic leukemia. AB - Monocytic leukemia may be associated with specific cutaneous changes in about a third of all cases, most characteristically the plum-colored nodule. Nonspecific cutaneous xanthomas have occasionally been reported with a variety of leukemias, mostly in the pediatric literature, but the first report (to our knowledge) of acute myelomonocytic leukemia presenting with specific cutaneous xanthomatous lesions appeared in 1982. Herein is reported a case of chronic myelomonocytic leukemia presenting with a papular histiocytic eruption, and later showing striking cutaneous xanthomas, together with autopsy findings. Physicians should be aware of this rare but important association. PMID- 3862366 TI - [Catamenial pneumothorax]. PMID- 3862367 TI - Hypnotizability in patients with anorexia nervosa and bulimia. AB - Hypnotizability was assessed with the use of three standardized hypnosis scales in 86 patients with eating disorders. All diagnoses were made according to DSM III criteria. Sixty-five patients had anorexia nervosa and 21 had bulimia. The anorectic patients were divided into subgroups of 19 abstainers and 46 vomiters and purgers. Bulimic patients were highly hypnotizable, significantly more so than the patients with anorexia nervosa and age-matched populations. There was also a trend for the purging subgroup of anorectics to have higher hypnotic capacity than abstaining anorectics. PMID- 3862368 TI - Augmentation of human antibody-dependent cellular cytotoxicity and mononuclear phagocytosis by procaine. PMID- 3862369 TI - [Plasma prostaglandin E2 and F2 alpha levels in patients with mucocutaneous lymph node syndrome (Kawasaki disease) and anaphylactoid purpura]. PMID- 3862370 TI - Accuracy of detection of the retinoblastoma gene by esterase D linkage. AB - The gene for hereditary retinoblastoma (Rb), an autosomal dominant trait localized to the long arm of chromosome 13, is linked to the locus for the enzyme esterase D (EsD). We analyzed a three-generation family that demonstrates cosegregation of alleles at the EsD locus and the Rb locus. This kindred yields a logarithm of the odds ratio (LOD) score of 2.46 at a recombination fraction (0) of 0.0. When combined with five other recently reported families, the resulting maximum score was 11.08 at 0 = 0.0. This combined LOD score and the lack of demonstrable crossovers in more than 65 individuals indicate that predictions of the Rb gene carrier state based on EsD genotyping are at least 90% accurate. PMID- 3862371 TI - Effects of oxytocin and prostaglandin F2 alpha on pregnant human myometrium recorded by the single sucrose-gap method--comparison of an in vitro experiment and an in vivo trial. PMID- 3862372 TI - A.D.A. list of certified products, 1985. PMID- 3862373 TI - Frequency distribution of children in Australia according to dental caries experience. PMID- 3862374 TI - Asymmetry of caries attack on the occlusal surfaces of first permanent molar teeth. PMID- 3862375 TI - Pattern of dental caries in 12-year-old Sydney schoolchildren. PMID- 3862376 TI - International Organization for Standardization. International Standard 3950 1984(E). Dentistry--designation system for teeth and areas of the oral cavity. PMID- 3862377 TI - Air-polishing systems. Clinical notes no. 3. PMID- 3862378 TI - Focal osteoporotic bone marrow defect. PMID- 3862379 TI - The use of fluoride preparations in dental practice. PMID- 3862380 TI - Improved mouthguard design for the edentulous sportsman. PMID- 3862381 TI - Base-varnish interactions around amalgam restorations: spectrophotometric and microscopic assessment of leakage. PMID- 3862382 TI - A study of Streptococcus mutans levels in both infants with bottle caries and their mothers. PMID- 3862383 TI - Rat submandibular gland microvasculature following fractionated megavoltage irradiation. PMID- 3862384 TI - Value of hormone receptors in the management of breast cancer--I. Advanced breast cancer. AB - A review of 152 women with locally advanced or metastatic breast cancer is presented. Only 32% of unselected women responded to appropriate endocrine therapy; 64% responded if ER was present and 71% if both ER and PR were present. Survival for the endocrine responders was prolonged and of good quality. Chemotherapy, used subsequently as initial treatment in ER negative women, significantly improved response rates but without a survival advantage. However, there was a strong clinical impression that good performance status was maintained until shortly before death. This data suggests therapy given according to hormone receptor status is of value and confirms the validity of our hormone receptor assays as applied to clinical practice. PMID- 3862385 TI - Operative fine needle aspiration cytology of pancreatic tumours. AB - Thirty-one patients undergoing laparotomy for tumours in the region of the pancreas had both fine needle aspiration cytology (FNAC) and histological biopsy specimens taken to assess the accuracy of the FNAC technique. There were no false positive results but there were six false negative results following FNAC with only one false negative result of histological biopsy. However, there was sampling bias in favour of histology in each of the five patients with negative FNAC and positive histology; two had metastatic disease and three had histology repeated because the initial frozen section was negative. Two major complications may have resulted from the histological biopsy procedure. It is concluded that fine needle aspiration cytology is the ideal method of biopsying pancreatic lesions because of the inherent risk of complications following histological biopsy. PMID- 3862386 TI - Colorectal carcinoma in the young. AB - Four hundred and five patients with colorectal adenocarcinoma were seen over a five year period in the Department of Surgery, University of Hong Kong. These patients were divided into two concurrent groups according to the age of 40. Thirty patients (7.4%) were below age of 40 at the time of presentation. This young group of patients had both a higher combined proportion of C and D tumors (76.6% to 50%) and a higher proportion of poorly differentiated tumours (20% to 5.5%). The curative and palliative resections rates were similar. Life tables of patients who underwent curative resections showed young patients to have a significantly poorer overall disease-free interval as well as overall determinant survival. In comparing only the Dukes C patients, the young patients still showed a higher recurrence rate. PMID- 3862387 TI - Recurrent nasopharyngeal carcinoma--two long term disease-free remissions with non-cisplatinum based combination chemotherapy. AB - Two cases of locally recurrent nasopharyngeal carcinoma following maximal radiotherapy are presented. Both patients had complete resolution of disease with outpatient combination chemotherapy using Vincristine, Adriamycin and Cyclophosphamide (VAC), and are disease free, and working full time, 3 and 4 years later, respectively. The significant relapse rate of nasopharyngeal carcinoma after initial radiotherapy is outlined, and the reported limitations of radiotherapy and chemotherapy in this situation are discussed. The survival curve for this disease appears to plateau at 2-3 years. This appears to be the first reported outpatient combination chemotherapy programme to produce long term disease-free remission in recurrent disease. PMID- 3862388 TI - Jaw wiring in the treatment of morbid obesity. AB - Fourteen patients originally presented with hyperphagia and intractable morbid obesity have had maxillomandibular fixation (MMF) applied in an effort to control their obesity. In 10 patients who were massively obese or considered poor risk candidates for surgical control of their obesity, MMF was applied with the aim of reducing the obesity to a level where a surgical gastric restrictive bariatric procedure could be safely carried out. Eight of these patients had been rejected for surgical control of obesity elsewhere and two were edentulous. Five of these patients after successful weight loss over periods from 16 to 40 weeks (mean percentage overweight lost 84.8, range 39-150) safely underwent a gastric restrictive procedure. All five patients have had continuous weight loss after bariatric surgery. Two patients requested removal of MMF 1 and 2 weeks after application. The remaining three patients, who were candidates for surgery, after successful weight loss over periods from 12 to 28 weeks (mean percentage of overweight lost 45, range 38-50) decided not to proceed with surgical control. All have subsequently regained the lost weight. Four originally morbidly obese patients, who had had a previously successful gastric restrictive procedure followed by weight loss, requested MMF in an effort to lose further weight. Over periods from 8 to 16 weeks three of the four had further weight loss (mean percentage of overweight lost 18.3, range 5-30). After removal of MMF all four patients regained some weight. In only one was there a significant maintenance of weight lost during MMF.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3862389 TI - Gastroplasty with reinforced greater curve stoma for morbid obesity. AB - Forty-four morbidly obese patients underwent gastroplasty with a transverse double stapled partition forming a 20-30 ml proximal gastric pouch and a 10 mm diameter stoma on the greater curve supported by three non-absorbable imbricating seromuscular inverting suture layers to form a neopylorus. All patients have been followed at approximately 4 weekly intervals for at least 72 weeks and all patients have been submitted to endoscopic assessment at the end of 1 year. There was no mortality and there were no major immediate postoperative complications. Three patients (6.8%) had inadequate weight loss (in two associated with partial staple line failure). The other 41 patients (93.2%) reached final weights less than or equal to 40% above ideal weight. Sixteen patients (36.4%) reached their ideal weight. Six patients (13.6%) developed stomal stenosis (two requiring re operation, and four requiring endoscopic dilatation). PMID- 3862390 TI - Pharyngocutaneous fistulae following laryngectomy. AB - This retrospective analysis of 100 patients revealed a postoperative pharyngocutaneous fistula rate of 15.3% following total laryngectomy, and 21.4% following partial pharyngolaryngectomy. All fistulae were benign. None resulted in mortality. The most significant risk factor for the development of fistulae is prior radiotherapy, especially high dose (greater than 5000 rads). Other factors include postoperative haemoglobin less than 12.0 g/dl, pyriform sinus tumour, and larger tumour size. Both the prior administration of radiotherapy and the site of the fistula opening most influence management problems. PMID- 3862391 TI - Fluid filled oculoplethysmography and carotid artery disease: imperfect but useful. AB - Fluid filled oculoplethysmography (OPG) is a widely used method of assessing carotid stenosis but it has limitations in the detection of bilateral internal carotid artery lesions and of external carotid artery stenoses. In this study, 157 consecutive patients having carotid angiography and fluid filled OPG were assessed to determine the accuracy of the technique and define the sources of error. Haemodynamically significant stenosis (HDS) was defined as at least 50% stenosis of the internal carotid artery (ICA). Only the most severely stenosed side of the 35 bilateral HDS lesions was detected owing to the poor reliability of ear pulse delays. Eye/eye delays alone detected the most severely stenosed side in 82 of 98 patients with an HDS stenosis of one or both ICAs for a sensitivity of 84% a specificity of 71% (41/59) and accuracy of 79% (81/157). The measurement of ear/ear pulse delays for external carotid artery (ECA) stenosis had a sensitivity of only 15% (5/34). Ear/eye pulse delays detected none of the 35 patients with bilateral HDS ICA stenosis. Bilateral equal HDS ICA stenoses were a significant source of error. Stenotic disease was present in the aortic arch and branches (five patients) or the carotid siphon (eight patients) and in seven cases it resulted in an incorrect localization on OPG. There was no diagnostic relationship between the severity of delay and the presence of total occlusion. Chronic local eye pathology was present in 13 patients and did not affect the results of the OPG. We have ceased to use ear pulse measurements for routine assessment but continue to use the eye/eye delays in conjunction with a carotid doppler imaging system. PMID- 3862392 TI - Inflammatory aneurysms of the abdominal aorta. AB - Over a 5 year period 268 abdominal aortic aneurysms were operated on, 15 of these (5.6%) showed the characteristic features of inflammatory aneurysms. Rupture of the aneurysm was an unusual method for presentation (one patient), and back and abdominal pain were present in 13 patients. The ESR may be of value in the pre operative diagnosis. Ultrasound and CT scanning can, by the detection of a peri aortic mass lead to confusion in the diagnosis. Two patients were initially diagnosed as having lymphoma. Strict adherence to the surgical principles outlined resulted in no mortality or significant morbidity in these 15 patients. PMID- 3862393 TI - Management of splenic trauma in childhood. AB - The management of splenic trauma at the Royal Children's Hospital from January 1973 to January 1984 is reviewed. During the period studied there was a trend toward non-operative management in uncomplicated cases, and where laparotomy was required splenic repair rather than splenectomy was performed. Guidelines are given for the selection of patients who can be treated in safety without operation. PMID- 3862394 TI - Liquid gastric emptying assessed by direct and indirect techniques: radionuclide labelled liquid emptying compared with a simple paracetamol marker method. AB - Radionuclide techniques have enabled direct quantitative measurements of gastric emptying for solid and liquid phases of a meal. Such a technique has been used to validate the use of plasma paracetamol levels as a means of indirect assessment of liquid gastric emptying and to confirm a useful correlation exists between plasma and saliva paracetamol concentrations. Ten healthy volunteers underwent a routine gastric emptying study. The meal comprised a 100g 'hamburger' and 150 ml of 10% dextrose in water containing 113In and 1 g of dissolved paracetamol. The time taken for 50% of the liquid marker (T50) to clear the gastric region was assessed. Time to peak concentration of paracetamol for both saliva (C max saliva) and plasma (C max-plasma) was determined. A significant correlation was found between the time to C max-plasma and T50 (rs = 0.624, P less than 0.05) and also time to C max-saliva and T50 (rs = 0.573, P less than or equal to 0.05), confirming that paracetamol concentration in plasma and saliva reflect radionuclide assessed liquid emptying. A useful correlation also exists between time to C max-plasma and time to C max-saliva (rs = 0.84, P less than 0.01) permitting them to be used interchangeably. The use of time to C max-saliva to assess liquid gastric emptying has a number of applications. PMID- 3862395 TI - An orthosis for the postoperative management of first metatarsophalangeal joint reconstruction. PMID- 3862396 TI - Ileocaecal intussusception of a previously recognized Meckel's diverticulum. AB - A case is reported of an ileocaecal intussusception caused by a previously recognized Meckel's diverticulum. The case offers the opportunity to discuss the management of an asymptomatic Meckel's diverticulum found incidentally. The conclusion is reached that, in general, diverticulectomy is appropriate. PMID- 3862397 TI - A case of pancreatitis associated with gastrinoma. AB - A case is presented of a 56 year old man with a history of idiopathic pancreatitis and multiple admissions for Klebsiella sepsis from an intra abdominal focus, who in February 1980, developed spontaneous jejunal perforations on two occasions due to multiple ulcers in the small intestine associated with multiple hepatic metastases from a gastrin-secreting islet-cell tumor (gastrinoma) of the pancreas. On searching the literature, no other record could be found of an association between pancreatitis and a gastrinoma, although in this patient the two disease processes appear to be inextricably related. PMID- 3862398 TI - Surgical oncology. PMID- 3862399 TI - General surgery and the Humpty Dumpty syndrome. 1984 John Loewenthal lecture. PMID- 3862400 TI - Hydatidiform mole in Victoria: aetiology and natural history. AB - A retrospective study was made of 455 patients referred to the Hydatidiform Mole Register of the Royal Women's Hospital from 1973-1982 who fulfilled the criteria for diagnosis of hydatidiform mole. The incidence of hydatidiform mole was 1:1,357 livebirths in Victoria. Age greater than 40 years (P less than 0.001), nulliparity (P less than 0.005) and parity greater than 4 (P less than 0.001) were the only predisposing factors found. An association with artificial insemination with donor semen was also noted (P less than 0.025). The need for further treatment for persistent trophoblastic activity (13.6% of patients) was independent of the method of evacuation employed and of gestation at evacuation. Only 2 cases of histologically proven postmolar choriocarcinoma occurred, one of which was also the only death recorded from all patients registered following a molar pregnancy. PMID- 3862401 TI - Clinical analysis of intracranial metastases in gestational choriocarcinoma: a series of 15 cases. AB - Between 1963 and 1980 we have had experience of 54 patients with gestational choriocarcinoma and 29 are alive, a survival rate of 53.7%. The disease had metastasized to the central nervous system in 15 of these 54 patients, an occurrence rate of cerebral metastases of 27.8%. 13 of these 15 patients have died and 2 are now in a state of remission. Autopsy was performed in 8 cases. The following points are emphasized: cases with the pulmonary disease risk intracranial spread; the serum/cerebrospinal fluid ratio of human chorionic gonadotropin concentrations and computerized tomography are recommended as useful investigations in the diagnosis of CNS disease; decompression surgery in patients with increased intracranial pressure is indispensable; radiotherapy is temporarily effective for brain deposits; powerful systemic chemotherapy using multiple anticancer drugs is suggested to be helpful both in preventing and in treating CNS disease. PMID- 3862403 TI - Culdocentesis in tubal pregnancy. AB - Culdocentesis was carried out in 92 suspected cases of ectopic pregnancy and was positive in 90%. Laparotomy confirmed the accuracy of culdocentesis in 97.5% of the cases of acute tubal rupture, 87.5% of tubal abortions and 80% of 'intact' tubal pregnancies. PMID- 3862402 TI - Cigarette smoking, alcohol consumption and fetal outcome in Tasmania 1981-82. AB - Analysis of cigarette smoking and alcohol consumption patterns recorded in pregnancy could not detect a harmful effect of alcohol at levels below 2 glasses a day. Total abstainers fared very slightly worse than those who drank occasionally. Smoking was associated with lower birth-weight and a worse fetal outcome independent of socioeconomic status, parity, maternal age or alcohol consumption. There was evidence of an interaction between smoking and adverse social and parity factors in low birth-weight. PMID- 3862404 TI - Urinary voiding patterns of apparently normal women. AB - A survey of 886 women who considered themselves to be normal was carried out to determine voiding habits in the population and the prevalence of urinary incontinence of any degree. Eighty-eight percent voided at 3-6 hourly intervals. Increasing age did not affect the frequency of micturition but parturition did. Nocturia was present in 18% but increased with age. Thirty-two percent of the study group admitted to having had one or more episodes of incontinence. Having borne a child increased the prevalence of incontinence but increasing age did not. There was a small but significant occurrence of apparent sphincter weakness in nulliparas. PMID- 3862405 TI - The birthing chair in the second stage of labour. AB - A prospective study of 56 primigravidas was performed to assess the advantages, disadvantages and acceptability of the upright posture during the second stage of labour. Twenty-seven patients laboured in the second stage in a birthing chair, in an upright position. Twenty-one patients laboured in bed in the recumbent position and acted as controls. No difference could be found in the length of second stage, ease or type of delivery between the 2 groups. No differences were detected in the condition of the neonates between the 2 groups. This birthing chair was found to be an acceptable mode of delivery to most of those patients using it. PMID- 3862406 TI - Malignant sequelae of molar pregnancy in Victoria. AB - In a retrospective study of 455 patients with confirmed molar pregnancy, registered with the Hydatidiform Mole Register of the State of Victoria in the years 1973-1982 inclusive, treatment for persistent trophoblastic activity was necessary in 62 (13.6%) patients. The need for treatment was independent of levels of urinary chorionic gonadotrophin (UCG) excretion prior to evacuation of the molar pregnancy, age, parity or blood group. All patients achieved initial remission of UCG levels within 5 courses of treatment. Risk factors were scored retrospectively and patients responded poorly if therapy inappropriate to risk factors was given. Only 2 cases of histologically proven choriocarcinoma occurred and the only death recorded was in 1 of these patients. PMID- 3862407 TI - Alcohol in breast milk. AB - At fixed intervals after the ingestion of alcohol by 8 nursing mothers, sets of breast milk and blood samples were collected and their alcohol levels compared. One set of milk samples was solely hind-milk while the remainder were fore-milk samples. The results showed that alcohol appeared quickly in both fore- and hind milk at a level equivalent to or higher than the corresponding blood samples. Elimination of alcohol from the milk was closely related to its elimination from blood and was unaffected by breast feeding. However, despite this, the large dilution of the alcohol contained in the milk by the baby's body water renders the baby's resultant blood alcohol level very low in all but the most extreme cases. PMID- 3862408 TI - The care of older children when a sibling is born. AB - This study into the care of a child when his/her mother is hospitalized has shown that most care is given by the father and the grandparents. However, about 10% of mothers do not feel or recognize their child's need to understand why she is not at home, where she is, nor to visit her in hospital. PMID- 3862409 TI - Developmental changes in the activities of prostaglandin synthesizing enzymes in the digestive and immune systems of rat. AB - The developmental changes of prostaglandin (PG) synthesizing enzymes in the digestive system (stomach and small intestine) and the immune system (spleen and thymus) of rats were investigated. In all the digestive organs, the predominant PG produced from PGH2 changed at around 2 weeks after birth to another PG. Further, the predominant activities of PG synthesizing enzymes were different organ by organ in the digestive system. In the case of the immune system, only the activity of PGD2 synthesizing enzyme displayed a significant increase during development and the activities of other PG synthesizing enzymes remained insignificant throughout the development. These results suggest that PGs may play important roles during the development of each organ. PMID- 3862410 TI - Effect of sulfotransferase inhibitors on the 2-acetylaminofluorene-mediated lowering of rat liver N-hydroxy-2-acetylaminofluorene sulfotransferase activity. PMID- 3862411 TI - 'Destructive forms of periodontal disease in adolescents and young adults'. PMID- 3862412 TI - Teething troubles. PMID- 3862413 TI - A current view on patterns of extraction therapy in British health service orthodontics. PMID- 3862414 TI - The teaching of orthodontics to Bristol undergraduates. End of the beginning or beginning of the end? PMID- 3862415 TI - 'Negotiation of obstructed canals and bleaching of teeth'. PMID- 3862416 TI - 'Is antibiotic prophylaxis required for dental patients with joint replacements?'. PMID- 3862417 TI - Acquired immune deficiency syndrome presenting as recalcitrant Candida. PMID- 3862418 TI - Local anaesthesia in dental practice. II. A laboratory investigation of a self aspirating system. PMID- 3862420 TI - 'A comparison of fibreoptic transillumination with bitewing radiographs'. PMID- 3862419 TI - 'Some Asian communities in the UK and their culture'. PMID- 3862421 TI - Clinical assessment of cases of tooth surface loss. PMID- 3862422 TI - The effectiveness of oral diazepam in anxious child dental patients. PMID- 3862423 TI - Adult attitudes to dentistry among dental attenders in South Wales. PMID- 3862424 TI - Computers in the dental surgery: the patients' views. PMID- 3862425 TI - Extramedullary presentation of the blast crisis of chronic myelogenous leukaemia. AB - We report the clinical histories and a multiparameter pathological study of the extramedullary lesions of seven patients with chronic myelogenous leukaemia in whom the initial clinical presentation of blast crisis (BC) was in an extramedullary site (lymph nodes in six, mandibular mass in one). Bone marrow BC was demonstrated simultaneously or within a few months in four patients. Three patients received chemotherapy only, four underwent bone marrow transplant. Six patients died within 1 year from diagnosis of extramedullary BC, one is alive without disease. The longest survivals (12+, 12, 11 months) were those of patients who never developed bone marrow BC and were recipients of bone marrow transplant. Studies of extramedullary disease included: histology; histochemistry for chloracetate esterase (CAE) and lysozyme; assays for TdT; electron microscopy; immunofluorescence for Fc-receptors, immunoglobulins and lymphoid and myeloid antigens by a panel of monoclonal antibodies; and cytogenetics. Three cases were classified as myeloid BC based on histochemistry and/or ultrastructure and immunology (OKM1+, MCS2+, IG10+); two as lymphoid BC (CAE-, lysozyme-, TdT+), one of them expressing a T-cell phenotype. Cytogenetic analysis of extramedullary lesions and simultaneous or subsequent bone marrows demonstrated identical karyotypes in three patients and significantly different karyotypes in one. PMID- 3862426 TI - Myometrial activity in first trimester human pregnancy after Epostane therapy. Effect of intravenous oxytocin. AB - The effect on myometrial activity of Epostane, a competitive inhibitor of the 3 beta-hydroxy steroid dehydrogenase enzyme system (3 beta-HSD) has been studied in 20 women awaiting termination of pregnancy. The women were randomly allocated by a double-blind procedure into two groups. In the Epostane-treated group there were significant falls in serum progesterone and oestradiol concentrations after 3 days of treatment. The placebo-treated group showed a small but significant decline in serum progesterone concentration. Insertion of an intrauterine balloon catheter for pressure measurements produced significantly greater uterine activity in the Epostane-treated group. The oxytocin response was variable and there was no significant difference between the two groups. A small rise in the peripheral plasma concentration of a prostaglandin F2 alpha metabolite (PGFM) was observed in the placebo group following oxytocin injection. There was a significant inverse correlation between post treatment progesterone values and uterine activity. Epostane appears to sensitize the myometrium to endogenous oxytocics and this probably results from progesterone 'withdrawal'. This effect may prove useful in potentiating the action of exogenous myometrial stimulants, such as prostaglandins, and may have a role in the termination of early pregnancy. PMID- 3862427 TI - Interruption of first trimester human pregnancy following Epostane therapy. Effect of prostaglandin E2 pessaries. AB - The effect of Epostane, a competitive inhibitor of the 3 beta hydroxy steroid dehydrogenase enzyme system in combination with prostaglandin E2 (PGE2) for induction of abortion in early first trimester pregnancy has been studied in a group of 20 women awaiting termination of pregnancy. The women were consecutively assigned to four treatment groups. The first group was treated with PGE2 alone, administered vaginally as a lipid based (Witepsol) pessary. The remaining three groups received Epostane at differing doses for 5 days, and were treated with PGE2 on the fourth day. Significant falls in serum progesterone and oestradiol occurred in the Epostane-treated patients. Abortion was induced in one of the five control patients and in three of 10 patients treated with low doses (300-400 mg) of Epostane. Intrauterine pressure monitoring showed an increased reactivity to PGE2 in the treated groups. At the highest dose (600 mg) of Epostane, serum progesterone and oestradiol showed the greatest decline to 8% and 21% of the pretreatment values, a prompt and sustained pressure response occurred to PGE2 and abortion was induced in all five patients. A critical degree of progesterone suppression appears to sensitize the myometrium to exogenous prostaglandin. This combined treatment is an effective method of early pregnancy termination and may have a role in the management of mid-trimester abortion. PMID- 3862428 TI - Release of iron from the two iron-binding sites of transferrin by cultured human cells: modulation by methylamine. AB - We have investigated the effect of increasing concentrations of methylamine (5, 10, and 25 mM) on the removal of iron from the two iron-binding sites of transferrin during endocytosis by human erythroleukemia (K562) cells. The molecular forms of transferrin released from the cells were analyzed by polyacrylamide gel electrophoresis in 6 M urea. Endocytosis of diferric transferrin was efficient since greater than 10% of surface-bound protein escaped endocytosis and was released in the diferric form. Although transferrin exocytosed from control cells had been depleted of 80% of its iron and contained 65-70% apotransferrin, iron-bearing species were also released (15% C-terminal monoferric; 10% N-terminal; 10% diferric). The ratio of the two monoferric species (C/N) was 1.32 +/- 0.12 (mean +/- SD; n = 4), suggesting that iron in the N-terminal site was more accessible to cells. In the presence of methylamine there was a concentration-dependent increase in the proportion of diferric transferrin release (less than 80% at 25 mM) and a concomitant decrease in apotransferrin. Small amounts of the iron-depleted species, especially apotransferrin, appeared before diferric transferrin, suggesting that these were preferentially released from the cells. The discrepancy between the proportions of the monoferric transferrin species noted with control cells was enhanced at all concentrations of methylamine, most markedly at 10 mM when the C/N ratio was 2.4. The N-terminal site of transferrin loses its iron at a higher pH than the C terminal site, and so by progressively perturbing the pH of the endocytic vesicle we have increased the difference between the two sites observed with control cells.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3862429 TI - Anthracycline antibiotic reduction by spinach ferredoxin-NADP+ reductase and ferredoxin. AB - Spinach NADPH:ferredoxin oxidoreductase (EC 1.6.7.1) catalyzes the NADPH dependent reduction of the anthracyclines daunomycin, aclacinomycin A, and nogalamycin and their respective 7-deoxyanthracyclinones. Under anaerobic conditions, the endogenous rate of O2 reduction by NADPH catalyzed by ferredoxin reductase (0.12 s-1 at pH 7.4) is augmented by the anthracyclines and 7 deoxyanthracyclinones. The catalytic constants are approximately equivalent for this augmentation for all substrates (approximate V of 2 s-1 and KM of 75 microM). Both O2- and H2O2 are made. Under anaerobic conditions, anthracycline reduction catalyzed by ferredoxin reductase results in the elimination of the C-7 substituent to provide a quinone methide intermediate. Following tautomerization by C-7 protonation, 7-deoxyanthracyclinones are obtained. Under appropriate conditions these may be further reduced to the 7-deoxyanthracyclinone hydroquinones. For daunomycin, the quinone methide is formed rapidly after reduction and is easily monitored at 600 nm. It may react with electrophiles other than H+, as demonstrated by its competitive trapping by p carboxybenzaldehyde. It may also react with nucleophiles, as demonstrated by its competitive trapping by N-acetylcysteine. For aclacinomycin, quinone methide formation is also rapid although no distinct transient near 600 nm occurs. In addition to protonation, it reacts with itself providing the 7,7'-dimer. With ethyl xanthate as a thiolate nucleophile, adducts derived from addition to C-7 are obtained. For nogalamycin, quinone methide formation is not rapid. Nogalamycin is reduced to its hydroquinone, which slowly converts in a first order process [k = (1.2 +/- 0.2) X 10(-3) s-1, pH 8.0, 30 degrees C] to the quinone methide, which is then quenched by protonation. Spinach ferredoxin in its reduced form is chemically competent for anthracycline reduction. Its effect on both the aerobic and anaerobic reactions catalyzed by ferredoxin reductase is to increase severalfold the overall velocity for anthracycline reduction. In conclusion, the aerobic reaction pathways for the anthracyclines as mediated by ferredoxin reductase are remarkably similar, while the anaerobic reactions are remarkably different. If these anthracyclines exert their antitumor activity by a common anaerobic pathway, it is most likely that the pathway is determined by the properties of the anthracycline as complexed to its in vivo target. The behavior of ferredoxin further suggests that not only low-potential flavin centers but also iron-sulfur centers should be regarded as important loci for anthracycline reductive activation. PMID- 3862430 TI - Effect of the antiglucocorticoid agent RU 38486 on the dexamethasone inhibition of Friend cell differentiation. AB - Glucocorticoid hormones are known to inhibit the erythroid differentiation of Friend cells. The mechanism of action of these hormones has been questioned, and results suggesting an action not involving the nuclear binding of the receptors have been published. We have used the antiglucocorticoid RU 38486 to block the inhibitory effect of dexamethasone on the induced differentiation of Friend cells. Our results strongly suggest a glucocorticoid action involving the binding of classical receptors to the cell nucleus. PMID- 3862431 TI - Gilles de la Tourette syndrome and the neurological basis of obsessions and compulsions. AB - Gilles de la Tourette syndrome (GTS) is a chronic neurological disorder manifested by involuntary motor tics and vocalizations. Many GTS patients also suffer from obsessions and compulsions. The clinical similarities between GTS and obsessive-compulsive disorder (OCD), their occurrence among members of the same families, and the fact that both can be observed as symptoms of known basal ganglia disturbances suggest that GTS and OCD share common neurological mechanisms. It is hypothesized that the tics and vocalizations of GTS are aberrant manifestations of simple motor programs that are spontaneously generated by the basal ganglia and that obsessions and compulsions represent more complex motor plans initiated by similar anomalous activities. PMID- 3862432 TI - The differentiation of HL-60 cells in the synthetic medium induced by GM3 ganglioside. AB - GM3 ganglioside, added exogenously to a promyelocytic leukemia cell line (HL-60 cells) in serum-free synthetic medium, induced differentiation into macrophage like cells. Macrophagic morphology and function of differentiation-induced cells were determined by cell growth behavior, May-Grunwald-Giemsa staining, activities of nonspecific esterase, phagocytosis and nitroblue tetrazolium (NBT) reduction. GM3 ganglioside may play a role in triggering differentiation of HL-60 cells into macrophage-like cells. PMID- 3862433 TI - [Separation of the transforming growth factor from cells of murine sarcoma induced by polymeric film]. AB - Use was made of the cell line PS-103 induced by subcutaneous implantation of plastic film to CBA mice. The conditioned medium from PS-103 was shown to stimulate anchorage independence of PS-103 itself and several pseudonormal cells: NRK and NIH/3T3. The peak of the colony-stimulating activity after gel filtration was displayed by fractions with a molecular weight of 15 000, which were acid- and heat-resistant. All those characteristics correlated with the traits of the transforming growth factors (TGF). The significance of the TGF for carcinogenesis induced by plastic films is discussed. PMID- 3862434 TI - Serum lactic dehydrogenase level has prognostic value in childhood acute lymphoblastic leukemia. AB - Serum lactic dehydrogenase (LDH) levels were measured at diagnosis in 293 children with "standard-risk" acute lymphoblastic leukemia (ALL) to determine the prognostic value of this biologic feature. Standard risk assignment was based on an initial leukocyte count of less than 100 X 10(9)/L, the absence of a mediastinal mass, the absence of meningeal involvement, and the presence of lymphoblasts lacking sheep erythrocyte receptors or surface immunoglobulin. Serum LDH levels ranged from 97 to 6,595 U/L, with a mean of 547 U/L. Higher LDH levels were associated with higher leukocyte counts, lower blast cell DNA indices, lower platelet counts, a larger spleen size, and nonwhite race. LDH levels were not related to the percentage of marrow S-phase cells, liver size, French-American British (FAB) classification, hemoglobin levels, age, sex, or the presence of the common ALL antigen on marrow blasts. Patients with the highest LDH levels (greater than 1,000 U/L) were most likely to fail treatment, whereas those with the lowest levels (less than 300 U/L) had the lowest risk of failure (P less than .0001). The prognostic significance of serum LDH level was retained in a subset of patients that included only those with leukocyte counts less than 25 X 10(9)/L (P = .0018). When 11 presenting characteristics were subjected to multivariate analysis, serum LDH level was found to have independent prognostic strength, contributing clinically important information to that gained from leukocyte count. Early measurement of serum LDH could be useful in identifying a group of standard-risk ALL patients with a high relapse hazard. PMID- 3862435 TI - Differential protection of normal and malignant human myeloid progenitors (CFU GM) from Ara-C toxicity using cycloheximide. AB - Cycloheximide, a reversible protein synthesis inhibitor, is thought to block DNA replication in normal cells by preventing synthesis of a labile protein. In animal systems, cycloheximide protects normal cells from cytotoxic S-phase specific agents, such as cytosine arabinoside (Ara-C). Malignant cells appear not to be susceptible to cycloheximide-induced cycle arrest and, subsequently, may not be protected from Ara-C cytotoxicity. The effect of cycloheximide on granulocyte/macrophage progenitors (CFU-GM) after in vitro Ara-C exposure was examined using normal human bone marrow, malignant progenitors from patients with chronic myelogenous leukemia (CML), and clonogenic cells from the human acute nonlymphocytic leukemia cell lines HL-60 and KG-1. Mononuclear or clonogenic cells were incubated for one hour with cycloheximide, followed by the addition, for three or 17 hours, of Ara-C before being plated in a methylcellulose culture system. CFU-GM survival was significantly increase if normal cells were treated with cycloheximide before Ara-C exposure. Similar cycloheximide pretreatment of CML progenitors and clonogenic HL-60 and KG-1 cells failed to protect CFU-GM from Ara-C-induced cytotoxicity. PMID- 3862436 TI - Altered glycosaminoglycan production by HL-60 cells treated with 4 methylumbelliferyl-beta-D-xyloside. AB - Glycosaminoglycans, mainly chondroitin 4-sulfate, are located in the primary granules of human myeloid cells. These polyanionic carbohydrates are believed to play an important role in leukocyte maturation and function. To study the effect of altered chondroitin sulfate metabolism on human promyelocytic leukemia cells, we have treated HL-60 cells with 4-methylumbelliferyl-beta-D-xyloside. beta-D Xylosides initiate the synthesis of free chondroitin sulfate chains. Cytochemical studies of treated cells demonstrated a marked increase in cytoplasmic granules stained with cationic dyes. This was confirmed by radiolabeled precursor incorporation studies that demonstrated a 344% increase in 35S-sulfate uptake into glycosaminoglycans associated with the cells and a 39% increase in incorporation into glycosaminoglycans released into the media. Chromatographic analyses of these glycosaminoglycans from treated cells demonstrated that the newly formed chondroitin sulfate chains were not attached to protein core and were of shorter length, but of greater charge density than chondroitin sulfate produced by control cells. Thus, beta-D-xyloside appears to alter the protein linkage, chain length, and sulfation of chondroitin sulfate produced by HL-60 cells, and these changes are morphologically evident. These biochemically altered cells may provide important information concerning the role of these macromolecules in myeloid development. PMID- 3862437 TI - Evidence for clonal development of childhood acute lymphoblastic leukemia. AB - To determine whether acute lymphoblastic leukemia (ALL) is a clonal disease and to define the pattern of differentiation shown by the involved progenitor cells, we studied the glucose-6-phosphate dehydrogenase (G6PD) types in the cells of 19 girls heterozygous for this X chromosome-linked enzyme. Lymphoblast immunophenotypes were those of HLA-DR+, CALLA+ ALL (six patients); HLA-DR+, CALLA ALL (four patients); pre-B cell ALL (two patients); T cell ALL (four patients); and undefined ALL (three patients). Malignant blast cells at diagnosis from ten patients displayed a single G6PD type, indicative of clonal disease. In contrast, both A and B G6PD in ratios similar to those found in skin were observed in morphologically normal blood cells from the same patients. The leukemic cells of three patients were examined at both diagnosis and relapse; in each instance the same G6PD type was found, consistent with regrowth of the original leukemic clone at relapse. Results of studies of cells from nine additional patients tested only at relapse were similar. Our results indicate that childhood ALL is a clonally derived disease involving progenitor cells with differentiation expression detected only in the lymphoid lineage. PMID- 3862438 TI - Relationship of mitochondrial membrane potential to hemoglobin synthesis during Friend cell maturation. AB - Previous studies have shown that exposure to imidazole dissociates hemoglobin synthesis from other aspects of cell maturation in dimethylsulfoxide (DMSO) treated mouse erythroleukemia (MEL) cells. In the present study, we have found that imidazole causes hyperpolarization of the mitochondrial membrane in MEL cells exposed to DMSO, in contrast to the depolarization observed with DMSO alone. Like the defect in hemoglobin synthesis, membrane hyperpolarization is reversible upon removal of imidazole and incubation of cells with DMSO alone. These correlations suggest that alterations in the electrostatic properties of the mitochondrial membrane, due directly or indirectly to the effects of imidazole, interfere with heme synthesis but not with other aspects of the maturation process in these developing erythroid cells. PMID- 3862439 TI - Endodontics--a perspective. PMID- 3862440 TI - The geriatric medical education imperative. PMID- 3862441 TI - The Institute of Medicine Report on Aging and Medical Education--1984 update. PMID- 3862443 TI - Medical education in geriatrics: ethical and social concerns. PMID- 3862442 TI - Education in the care of the elderly. PMID- 3862444 TI - The role of nonphysicians in the training of physicians. PMID- 3862445 TI - Biomedical research training as an apotheosis for geriatric education, with comments on the dogma of geriatrics and cost containment. PMID- 3862446 TI - Education in the clinical years: delusion or reality. PMID- 3862447 TI - Residency training in geriatric medicine--1984. PMID- 3862448 TI - Fellowships in geriatrics. PMID- 3862449 TI - Continuing medical education and geriatrics. PMID- 3862450 TI - Geriatric medical education imperative. PMID- 3862451 TI - Educating for caring. PMID- 3862452 TI - Statement on geriatric medical education. PMID- 3862453 TI - Preventive medicine in the aged. PMID- 3862454 TI - Statement on resuscitative intervention for patients who have suffered in hospital cardiopulmonary arrest: the issue of Do Not Resuscitate orders. PMID- 3862455 TI - Report of the Subcommittee on Professional Medical Conduct in New York State. PMID- 3862456 TI - Benign nerve tumors of the upper extremity. PMID- 3862457 TI - New concepts in suture selection and technical approaches in gynecological surgery. PMID- 3862458 TI - The management of neck nodes in head and neck cancer: a surgeon's view. PMID- 3862459 TI - Intracranial pressure changes during infusions of verapamil as compared with sodium nitroprusside. PMID- 3862461 TI - HLA and genetic marker studies in adenomatous polyposis. PMID- 3862460 TI - Modification of dyskinesias following the intrastriatal injection of prostaglandins in the rodent. AB - The abilities of prostaglandin E1 (PGE1), PGE2, PGD2 and PGF2 alpha to antagonize striatal dopamine function were assessed following bilateral and unilateral injections into the striata of the rat and guinea-pig. Three tests were used to assess the effects of the bilateral injections, ability to antagonize dyskinetic biting induced by 2-di-n-propylamino-5,6-dihydroxytetralin (0.025 mg kg-1 s.c.), ability to antagonize stereotyped behaviour induced by apomorphine (0.5 or 2 mg kg-1 s.c.) and ability to induce catalepsy. Asymmetry/circling behaviour revealed on challenge with apomorphine (0.25 mg kg-1 s.c.) was measured following unilateral injection into the striatum. In the rat, dyskinetic biting induced by 2-di-n-propylamino-5,6-dihydroxytetralin was antagonized by PGE1 (0.001-1 micrograms) and PGE2 (0.00001-1 micrograms) but not by PGD2 or PGF2 alpha (1 microgram). Stereotyped behaviour induced by apomorphine was not antagonized by any of the prostaglandins. A weak catalepsy was induced by PGE1 (1 microgram only), PGE2 (0.001-1 micrograms) and PGD2 (0.001-1 micrograms) but not by PGF2 alpha. Asymmetry and circling behaviour was only observed following the unilateral injection into the striatum of PGE1 and PGD2 (0.01-1 microgram) and challenge with apomorphine. In the guinea-pig the actions of PGE1 and E2 were compared with those of PGF2 alpha. Dyskinetic biting induced by 2-di-n propylamino-5,6-dihydroxytetralin was antagonized by bilateral injections into the striatum of PGE2 (0.001-1 microgram), but not PGE1 (0.5 micrograms) and PGF2 alpha (1 microgram) but not PGE, (0.5 micrograms) and PGF2 alpha (1 microgram). Similar injections of PGE1, E2 and F2 alpha, all failed to antagonize apomorphine induced stereotyped behaviour, or to induce catalepsy. PGE, (0.01-0.5 fig) and PGE2 (0.002-1 pg), but not PGF2 alpha, caused asymmetry following unilateral injection into the striatum and peripheral challenge with apomorphine. 5 It is concluded that the major effect in the striatum of the prostaglandins of the E series is to antagonize dyskinetic biting; this action is not shared by other prostaglandins tested, and does not reflect a generalised ability to antagonize striatal dopamine function. It is suggested that the actions of the prostaglandins to modify differentially dopamine-dependent behaviours from the striatum may reflect activity at a site subsequent to the dopamine receptor. PMID- 3862462 TI - ACh and 5-HT stimulated thermogenesis at different core temperatures in the He Cold hypothermic hamster. AB - Hamsters in deep experimentally induced hypothermia, at body temperatures between 7 degrees C and 11.5 degrees C, were microinjected with 5-HT and ACh at brain sites in the anterior-preoptic area of the hypothalamus (AH/POA). ACh or 5-HT was injected into an AH/POA site at different starting core temperatures in different groups of hypothermic hamsters. Colonic temperatures (Tc) were maintained, following He-Cold induction, in a temperature controlled environmental chamber and measured with a YSI thermister probe and YSI telethermometer. Injections of either 5-HT or ACh at Tc's between 7.0 degrees C and 9.0 degrees C elicited only modest increases in Tc i.e., 0.3 degrees C--0.6 degrees C, respectively. As Tc increased, however, to ranges between 9.1 degrees C--10.0 degrees C and in different animals to greater than 10 degrees C both ACh and 5-HT at the same sites elicited significant increases in Tc, 1.5 degrees C for 5-HT and 2.2 degrees C for ACh compared to saline injections. These data suggest that at the lowest Tc's we are observing a "cold block" of temperature sensitive sites in the AH/POA. Increasing the starting Tc beyond 9.0 degrees C however, evokes significant increases in heat-gain following AH/POA injection of either ACh or 5 HT. These data are consistent with Myers' observations concerning the organization of heat-gain mechanisms at AH/POA sites. In addition, they suggest that both the afferent limb of the heat-gain circuit (5-HT) and the efferent limb of the circuit (ACh) are functionally impaired when Tc is close to the physiological limit in the He-Cold hypothermic hamster. PMID- 3862463 TI - Computerized tomography scan findings in children with acute lymphocytic leukemia treated with three different methods of central nervous system prophylaxis. AB - Computerized tomography (CT) scans of the head were done on 93 children with acute lymphocytic leukemia in continuous complete remission who had been randomly assigned to three different methods. of central nervous system (CNS) prophylaxis. Twenty-nine children had received six doses of intrathecal methotrexate, 30 had received six doses of intrathecal methotrexate plus 2400 rad of cranial irradiation, and 34 had received six doses of intrathecal methotrexate plus three courses of intermediate-dose intravenous methotrexate. The overall incidence of abnormal scans was 35%, of which 91% were felt to represent minimal abnormalities. CT scan abnormalities were noted in 30% of the children receiving intrathecal methotrexate only, in 40% of those receiving intrathecal methotrexate plus cranial irradiation, and in 35% of those receiving intrathecal methotrexate plus intermediate dose methotrexate. These differences were not statistically significant. None of the three methods of CNS prophylaxis resulted in significant CT scan abnormalities. However, the few moderately or markedly abnormal scans evaluated were restricted to patients who received intrathecal methotrexate plus cranial irradiation. The clinical significance of CT scan abnormalities in leukemic children receiving these treatments remains unclear. PMID- 3862464 TI - Adriamycin induced resistance of sensitive K 562 cells to natural killer lymphocyte attack. AB - The effect of Adriamycin (ADM) on erythroleukaemia K 562 cell susceptibility to human natural killer (NK) cell activity has been studied. When cultivated for 3 days in the presence of 10 to 40 nM ADM, K 562 cells decreased their susceptibility to NK-mediated lysis in a dose-dependent fashion. At a concentration of 40 nM, previously found to induce optimal differentiation associated properties in K 562 cells, the induced resistance to NK-mediated lysis increased progressively from day 1 to day 3 of culture. ADM treatment did not induce K 562 cells to release factors which interfered with NK activity since supernatants from ADM-treated K 562 cell cultures caused no significant modification in the NK lytic process. Binding to NK of ADM-treated K 562 cells was unaffected since treated and untreated cells had identical capacities in a conjugate-forming cell assay or adsorption of NK cells on target cell monolayers. In cold target competition assays ADM-treated K 562 cells acted as more effective competitors than untreated K 562 cells. These observations imply that the reduced killing of the ADM-treated K 562 cells was independent of target-NK cell recognition, and suggest that ADM treatment could allow malignant cells to escape NK surveillance. PMID- 3862465 TI - Prognostic implications of blast cell morphology in childhood acute lymphoblastic leukemia: a report from the Childrens Cancer Study Group. AB - The Childrens Cancer Study Group (CCSG) has evaluated French-American-British (FAB) morphology in newly diagnosed children with acute lymphoblastic leukemia (ALL) since 1975. A modification of the FAB system was used in which individual lymphoblast cells were scored and designated as either L1 or L2 on the basis of distinctive morphologic characteristics. L1 ALL was defined as less than 10% L2 cells and greater than 90% L1 cells; L2 ALL was defined as greater than or equal to 10% L2 cells and less than 90% L1 cells. FAB morphology was an independent predictor of overall survival (P = 0.02) in CCSG-141 and a highly significant predictor of successful induction of complete remission and event-free survival in the CCSG-160 series (P = 0.00001). These studies involved nearly 3900 patients. Two concordance studies have been performed. In the first (1981) study, overall concordance between the FAB reference laboratory and member institutions was 76% using a two-category system (L1, non-L1), 86% for L1 cases, and 47% for non-L1 cases. In the second (1984) concordance study, the use of more stringent, semiquantitative definitions of L1 and L2 lymphoblasts did not improve overall (75%), L1 (89%), or non-L1 (46%) concordance. The results of reference laboratory classification more powerfully predicted event-free survival than did member institutions (P = 0.016 vs P = 0.125). Quality control factors (slide preparation, cellularity, staining quality, and discipline of the reviewer) did not influence concordance. These results justify the continued assignment of patients to protocols of the CCSG-100 series on the basis of the modified FAB classification. The biological significance of the FAB morphologic variants remains to be determined. PMID- 3862466 TI - Modification of the release rate of aclarubicin from polylactic acid microspheres by using additives. PMID- 3862467 TI - Extended wear aphakic contact lens fitting in high-risk patients. PMID- 3862468 TI - Bacterial keratitis associated with extended wear soft contact lenses. PMID- 3862469 TI - A simple detection of sialic acid storage disorders by urinary 'free' and 'total' sialic acid determinations. PMID- 3862470 TI - Quantitation of HLA-DR expression by cells involved in the skin lesions of tuberculoid and lepromatous leprosy. AB - A method is described which can be used to quantitate class II MHC antigens (HLA DR) expressed by cells within tissue sections. A mouse anti-human HLA-DR monoclonal antibody is directly conjugated to the fungal enzyme glucose oxidase. The enzyme, in the presence of its substrate can be used to reduce tetrazolium salts to insoluble coloured formazans. The coloured reaction product is proportional to the amount of antigen and can be eluted from cells and measured spectrophotometrically. The application of this technique to a study of the expression of HLA-DR antigens, functionally significant molecules, by mononuclear cells in the cutaneous lesions of leprosy, is described. When a quantitative measure of the HLA-DR expression was related to the area of the granulomata, significant differences in the HLA-DR expression by cells in the infiltrates associated with lesions of tuberculoid and lepromatous leprosy were observed. PMID- 3862471 TI - [Intraoperative location of the tooth root apex with an endodontic cold light]. PMID- 3862472 TI - [The question of hepatic tolerance to ultracaine with special reference to porphyria]. PMID- 3862473 TI - [Total one-stage fronto-facial advancement in early infancy for the treatment of postnatal asphyxia in Apert's syndrome]. PMID- 3862474 TI - [Professional socialization of patients with cleft lip, cleft lip and alveolus, cleft lip, alveolus and palate as well as their fathers]. PMID- 3862475 TI - [Occurrence and prevention of residual clefts in the surgical treatment of patients with cleft lip, alveolus, palate and velum]. PMID- 3862476 TI - [One-stage single-layer closure of the hard palate with a cranial-pedicled vomer flap in bilateral cleft lip, alveolus and palate patients]. PMID- 3862477 TI - [Experiences with Reichert's corrective surgery for protruding ears]. PMID- 3862478 TI - [Modified Grimm-Johanson surgery for lower lip reconstruction]. PMID- 3862479 TI - [Masseter muscle hypertrophy. A histochemical study]. PMID- 3862480 TI - [Malignancy in the maxillofacial region in alcohol consumption and nicotine use]. PMID- 3862481 TI - [Trichinosis. Detection of trichina in the pterygoid muscle]. PMID- 3862482 TI - [Interstitial radiotherapy of maxillofacial tumors with iridium-192 and iodine 125]. PMID- 3862483 TI - [Treatment results after radiotherapy of primary malignant mandibular tumors]. PMID- 3862484 TI - [Simultaneous indirect lymphography of the maxillofacial area using an aqueous contrast medium]. PMID- 3862485 TI - [Local treatment of bone infections with gentamicin-PMMA minichains in maxillofacial surgery. A clinical and pharmacokinetic study]. PMID- 3862486 TI - Studies on thromboxane B2 and prostaglandin E2 production in the course of murine autoimmune disease: inhibition by oral histidine and zinc supplementation. AB - Synthesis of both prostaglandin E2 and thromboxane B2 in liver and kidney tissue of NZB/W F1 hybrid mice was found to increase with advancing age. The rise in prostanoid generation coincided with the appearance and progression of the spontaneous systemic lupus erythematosus (SLE)-like disorders seen in these mice. Substitution of a diet supplemented with histidine (50 g kg-1 dry weight) and/or zinc (160 mg kg-1 dry weight) suppressed the autoimmune disease associated increase in prostanoid generation. The parent NZB and NZW strains also revealed an age-dependent increase in prostanoid synthesis whereas no age-related changes of tissue prostanoid generation were seen in healthy DBA-2 and C57-BL/6 control mice. In a previous study [Schwerdtfeger et al. 1980] a protective effect of histidine and/or zinc on the course of SLE-like disease in NZB/W F1 mice was reported. The current work suggests that this effect may in part have been mediated by the modulation of cellular arachidonic acid metabolism. The proposal that prostanoids are involved in the pathogenesis of autoimmune disease in NZB/W F1 mice is supported by these results. PMID- 3862487 TI - Gallium67 scintigraphy in the diagnosis of acute renal disease. AB - 67Ga scintigraphy was performed in 44 patients with various biopsy proven forms of renal disease and in a further 64 patients, some with clinically diagnosed renal disease and some with non-renal disorders. Renal uptake of gallium at 48 hours was graded by two blinded observers and by tissue ratios determined by computer. All 11 patients with biopsy proven acute drug-induced interstitial nephritis demonstrated intense, diffuse, bilateral renal 67Ga uptake, a phenomenon observed in only five of the other 30 patients with biopsy proven renal disease and in four of the 64 patients with clinical diagnoses only. No patient with acute tubular necrosis demonstrated significant renal gallium uptake. It is suggested that 67Ga scintigraphy is an excellent screening test for the presence of acute interstitial nephritis and helps to identify which patients with unexplained acute renal failure require renal biopsy. PMID- 3862488 TI - Nephropathy in Cameroon: evidence for filarial derived immune-complex pathogenesis in some cases. AB - This study was carried out in two parts. Part 1 consisted of an epidemiological survey of 1011 subjects aged 3-65 yrs from 2 adjoining villages hyper-endemic for Onchocerciasis and 890 subjects in a control area, relatively free from this infection but otherwise with a similar parasitological profile. There was a significantly higher prevalence of proteinuria in subjects from the onchocercal zone than in controls (observed difference greater than 5 1/2 times its standard error). Part 2 comprised detailed investigations, including renal biopsy, of 63 consecutive patients admitted into hospital with severe proteinuria and/or renal failure from a caption area extending into the onchocercal zone. There were a variety of causative factors, but in 9 cases filarial antigen was demonstrable in the immune-complex deposits in the kidney. A plenum of renal histopathological changes were seen in patients with onchocerciasis. The significance of these findings is discussed. PMID- 3862489 TI - Relationship of macrophage content, immunogenicity, and metastatic potential of a murine osteosarcoma of recent origin. AB - The purpose of these studies was to determine whether the high macrophage content (greater than 50 per cent) of the 90Sr-induced osteogenic sarcoma J (Os-J) of recent origin correlated with its immunogenicity or low metastatic potential. Cloning experiments demonstrated that the Os-J tumor is heterogeneous with regard to the production of experimental pulmonary metastases. Immunization-challenge studies in syngeneic mice and comparisons of tumor growth in normal or nude mice established that the slow growing Os-J tumor is poorly immunogenic. In vitro studies demonstrated that the Os-J tumor is highly susceptible to macrophages mediated lysis. This may explain the slow growth of the tumor in normal recipients with an intact mononuclear phagocyte system, as compared with the more rapid emergence of tumors in macrophage-suppressed mice. However, spontaneous metastases of the Os-J tumor were not observed either in normal or macrophage suppressed mice. Although a high macrophage infiltration of neoplasms could slow tumor growth, this was not associated with the immunogenicity of the neoplasm and did not appear to limit the spontaneous metastasis of this essentially benign neoplasm. PMID- 3862490 TI - Kinetic analysis of cloning patterns by human marrow cells in leukemia. AB - In leukemia and preleukemic disorders the progeny of a single cell proliferate and ultimately come to occupy the hemopoietic system. In the process normal stem cells are suppressed and in time may become extinct. This implies that neoplastic clones have a biological advantage. In this paper evidence is presented that the cloning of granulocytic colony forming cells in the clonal hemopathies is influenced by cell products that regulate cloning of normal colony forming cells. We have attempted to develop an approach to the study of clone-clone interactions in order to determine at what level(s) the battle between clones is fought. Future studies on relative responsiveness might help in understanding the mechanisms by which normal hemopoiesis is suppressed during the evolution of leukemia and re-established during remission induction. PMID- 3862491 TI - Establishment and characterization of cell lines derived from a human osteosarcoma. AB - Continuously growing cell lines have been established in vitro from a human osteosarcoma after transplantation into athymic nude mice. These cell lines grew as an adherent monolayer and consisted of various types of cells. Twelve clones were colonially isolated from a cell line, HuO-3N1, and subdivided into three groups depending on the morphologic features. The cells of HuO-3N1 and its clones had alkaline phosphatase (ALP)-positive granules in the cytoplasm. Cytogenetic studies showed that these cell lines were human aneuploid lines. A tumor was produced by injection of HuO-3N1 cells into an athymic nude mouse. ALP activity increased in a clonal cell line, HuO-3N1 cl-2, when cells were treated with 1,25 dihydroxy-vitamin D3. The proliferation of cells was inhibited when the cells were cultured in a medium supplemented with L-homoarginine, which is an inhibitor of bone and liver-specific ALP. This cell line has an osteoblastic phenotype and provides a useful model for studies of human osteosarcoma and phenotypical expression of human osteoblastic cells. PMID- 3862492 TI - Nearly total absence of pulmonary perfusion with corresponding technetium-99m MDP and gallium-67 uptake in a patient with mediastinal neuroblastoma. AB - A case of unilateral nearly total hypoperfusion of the left lung in a 13-month old girl is presented. The combination of the lung hypoperfusion and accumulation of the Tc-99m MDP and Ga-67 citrate in the same area suggested the preoperative diagnosis of mediastinal neuroblastoma. Explorative thoracotomy revealed the presence of a neuroblastoma compressing the left lung pedicle. The described scintigraphic appearance in the pediatric age group is suggested as typical of mediastinal neuroblastoma. This pathology should be included in the following gamuts in nuclear medicine: unilateral decrease or absent lung perfusion, unilateral diffuse chest uptake of Ga-67 citrate, and unilateral pulmonary uptake in bone scintigraphy. PMID- 3862494 TI - Gallium-67 citrate accumulation in parotid and submandibular glands in sarcoidosis. PMID- 3862493 TI - Gallium-67 scintigraphy in well-differentiated lymphocytic lymphoma of the skin. AB - Skin lymphomas are now divided into "T" or thymic cell lymphomas (mycosis fungoides being the principal type) and "B" cell lymphomas after the bursa of Fabricius. The "T" cell lymphomas all are identified by the thymic or cerebriform cell. Those lymphomas of the skin which do not contain these characteristic cells are derived from the bursa cells and are termed "B" cell lymphomas. A large percentage of these non "T" cell lymphomas have been histologically diagnosed as lymphocytic lymphoma of the skin (1). The authors had an opportunity to scan a patient with histologically proven lymphocytic lymphoma of the skin with Ga-67 and obtained on excellent correlation between gallium accumulation in the skin lesions and histologic confirmation of lymphocytic lymphoma. PMID- 3862495 TI - The gallium-67 citrate bone scan. PMID- 3862496 TI - Pefloxacin kinetics in cirrhosis. AB - Pefloxacin pharmacokinetics were evaluated in 16 patients with histologically proved cirrhosis of the liver and compared with those in 12 healthy subjects. In the patients with cirrhosis, the mean (+/- SD) t1/2, although highly variable, was significantly longer (35.10 +/- 19.00 hours) than in the normal subjects (11.00 +/- 2.64 hours; P less than 0.001). In the patients, the volume of distribution was decreased by 18% (P less than 0.02) and total plasma clearance was markedly decreased (2.66 +/- 1.85 vs. 8.19 +/- 2.80 L/hr X 1.73 m2; P less than 0.001). The t1/2 was longer in patients with ascites or jaundice than in patients without these complications. The urinary excretion of unchanged pefloxacin was higher in the patients than in the subjects, while the excretion of N-desmethyl pefloxacin (a major metabolite of the drug) was lower. It is proposed that the decreased plasma clearance of pefloxacin in patients with cirrhosis is a result of decreased hepatic metabolism of the drug, and that the dosage should probably be modified in these patients. PMID- 3862497 TI - Spontaneous rosette-forming lymphocyte sensitivity to prostaglandins in patients with cervical carcinoma after surgery. AB - We have reported a marked decrease of lymphocyte sensitivity to prostaglandins (PGs) in patients with untreated cervical carcinoma and other solid neoplasias. Particularly, Ea and ME rosette formation was inhibited only slightly by PGs in all cancer patients studied, as compared with the high inhibition values observed in normal individuals (Clin Immunol Immunopathol, 1981). In the present work, the PG-induced inhibition of Ea and ME rosette formation has been studied in patients with stage 0 cervical carcinoma up to 180 days after hysterectomy. It has been found that in these patients the PG sensitivity increased gradually up to or higher than the levels seen in normal control subjects. However, the PG sensitivity of Ea is restored earlier after surgery, while ME show a delayed recovery. Since the PG sensitivities correlate well with the clinical status of patients, it is suggested that such sensitivity may represent a useful test for following patients with cervical carcinoma. PMID- 3862498 TI - Effect of bisphosphonates on prostaglandin synthesis by rat bone cells and mouse calvaria in culture. AB - Bisphosphonates are potent inhibitors of bone resorption and also inhibit prostaglandin (PG) E2 synthesis in bone cells. Therefore we have investigated whether a correlation exists between inhibition of bone resorption and inhibition of PGE2 formation. Initially, bisphosphonates were tested for their effect on the release of [14C]PGE2 from rat calvaria cells labelled with [14C]arachidonic acid and stimulated by bradykinin, thrombin and mechanical manipulation. The effect on [14C]-PGE2 synthesis was not correlated with the known inhibitory activity of bisphosphonates on bone resorption. Mouse calvaria were then treated with epidermal growth factor (EGF) to induce PGE2 synthesis and bone resorption, with or without bisphosphonates. The bisphosphonates either decreased, had no effect or increased PGE2 production, but all inhibited the release of calcium. Finally, the bisphosphonates were given in vivo to mice before explantation of the calvaria. Some of the bisphosphonates decreased the production of PGE2, suggesting that these compounds may have such an effect in vivo. But again no relationship between the effect on PGE2 synthesis and bone resorption was found. Thus, these experiments show the inhibitory effect of bisphosphonates on bone resorption is unlikely to be explained only by their effect on PGE2 synthesis. PMID- 3862499 TI - Osteolytic lesion as the presenting feature of chronic granulocytic leukaemia. AB - We describe a woman in whom the first manifestation of chronic granulocytic leukaemia (CGL) was an osteolytic lesion. Six months later the peripheral blood showed the picture of CGL in blast crisis. Chromosome studies confirmed the diagnosis and immunological and ultrastructural studies demonstrated the presence of two blast populations: basophil blasts and megakaryoblasts. PMID- 3862500 TI - Changes in the uptake of 57Co-cyanocobalamin during dimethylsulphoxide-induced differentiation of HL60 cells to neutrophils. AB - The uptake of serum-bound 57Co-cyanocobalamin by uninduced and dimethylsulphoxide induced HL60 cells has been studied. The data indicate that during the maturation of promyelocytes to neutrophil granulocytes, there is a progressive and marked reduction in (a) the number of surface receptors for the transcobalamin II cobalamin complex (TCII-Cbl) per cell up to the metamyelocyte stage and (b) the amount of TCII-Cbl entering a cell, through the entire maturation pathway. The maturation of promyelocytes to neutrophil granulocytes was also accompanied by a marked reduction in intracellular vitamin B12 content. These observations help in explaining some features of granulocytopoiesis in cobalamin deficiency. PMID- 3862501 TI - The "spread of effect' of a school based dental health education project. AB - A study was undertaken to evaluate the impact of a school based dental health education programme ("Natural Nashers') upon the families of adolescents receiving the programme. Interviews with 73 randomly selected parents were conducted. One group (n = 35) had a child who had recently received the programme, the other (n = 38) had not. During the interview they were asked if they or other family members (apart from the programme recipient) had changed their dental behaviour or received any new dental information in the previous 2 months. Changes in behaviour were reported from 12 parents in the study group compared with seven in the control. Twenty two parents from the study group reported receiving new dental information in the family compared with four in the control group. The information and reported changes in behaviour related primarily to aspects of disclosing. In 80% of these cases of change or new information in the study group the source was an adolescent who had recently been taught "Natural Nashers'. PMID- 3862502 TI - Sociodemographic correlates of dental anxiety. AB - In a survey comprising 620 30-40-yr-old inhabitants of a Dutch town, dental anxiety was measured along with some sociodemographic variables. The data were analyzed in an attempt to reveal associations between sociodemographically determined groups of respondents and their scores on the different measurements of dental anxiety. Women reported higher dental anxiety levels than men, with the exception of body damage anticipation anxiety. The rank order of birth seemed to have no influence. Divorced men and women reported a higher anxiety level on two of the anxiety measurements, but the association appeared to be weak. A lower level of education, irregular dental attendance, and edentulousness appeared to be associated with a higher level of dental anxiety. PMID- 3862503 TI - Validity of a dietary interviewing method for use in caries prevention. AB - A suitable method for determining the usual diet of an individual is a prerequisite for dietary counseling in caries prevention. The purpose of this study was to develop a method that was able to obtain relevant information on the dietary habits of an individual and to test the validity of this method. During a series of interviews a dietary history interview was therefore developed with special emphasis on dietary factors known to be important in caries etiology, such as frequency of eating and frequency and duration of sugar intake at meals and in-between meals. The validity of the method with regard to caries-related factors was tested by interviewing 49 caries-active and 55 caries-inactive 14-yr old Danish schoolchildren. It was possible to detect a higher frequency of food intake and a more frequent and long-lasting use of sugar in the caries-active group. No difference was found in the consumption of sticky sugars between the two groups. With the present method it should be possible to pinpoint dietary problems in caries-active persons, so that dietary advice can be given in quantitative terms. PMID- 3862504 TI - Comparison between standardized periapical and bitewing radiographs in assessing alveolar bone loss. AB - Readability and alveolar bone level were compared in 455 sets of standardized radiographs each consisting of four periapical (PA) and two bitewing (BW) films. BW radiographs showed significantly higher proportions of unreadable sites in the canines and the mesial surface of first premolars (P less than 0.0001), while PA radiographs exhibited significantly higher proportions of unreadable sites in the distal surface of second molars (P less than 0.0001). Alveolar bone level was assessable in a total of 10016 sites, and the comparison showed identical readings in 82% of the sites. In the maxilla, a significantly higher proportion of sites exhibited larger bone loss measurements (P less than 0.0001) and more sites with significantly higher mean values (P less than 0.005) in BW than in PA films. Mandibular sites showed the opposite trend. The majority of the sites revealed a Pearson's correlation coefficient (r) ranging between 0.60 and 0.82. No significant difference between mean bone loss measurements in the two types of radiographs for all the sites was found. It was concluded that the two radiographic techniques may be used interchangeably in epidemiologic studies. PMID- 3862505 TI - Caries prevalence in Icelandic children in 1970 and 1983. AB - In the autumn of 1983 a clinical survey was carried out on 756 children aged 6-14 yr, residing in three non-fluoridated communities in Iceland. The aim of the survey was to assess what changes, if any, in caries prevalence may have taken place as a result of the provision of free dental restorative services for these children since 1974. The 1983 prevalence data were compared with data obtained from a caries survey conducted in 1970 in the same areas in Iceland. The same examiner performed all examinations in both studies. Although considerable increase was noted in number of filled teeth with a corresponding decrease in carious and missing teeth, a statistically significant change in caries prevalence, (dft, dfs, DMFT, DMFS) did not manifest itself. The dfs and DMFS in 1983 was 8.9 and 9.5, respectively, compared to 8.5 and 10.4 in 1970. Over 90% of the toothpaste used in Iceland during the 1970's contained fluoride. The children in the three study areas had not been provided with any public preventive programs. PMID- 3862506 TI - Epidemiologic characteristics of dental caries: relation of DMFT and DMFS to proportion of children with DMF teeth. AB - The relation of the age-specific mean DMFT and mean DMFS to the age-specific proportion of children with DMF teeth has been studied using the original data of Knutson and data of a recent Finnish material. When studying the relationship between the mean DMFT (x) and the proportion of children with DMF teeth (y), three models of regression were compared. For low caries populations, a specific correction exponential curve y = 1-abx seemed to fit caries data somewhat better than the other models. The relationship between the mean DMFS (x) and the proportion of children with DMF teeth (y) could be expressed by a curvilinear model y = e[b(lnx) + a]; this applied to low caries populations (y approximately less than 0.7) as well, but the unexplained residual variation was about 6%. PMID- 3862507 TI - Caries prevalence of preschool children in Baja, Hungary, in 1975 and 1982: effect of a supervised monthly NaF mouthrinsing program. AB - The aim of the study was 1) to compare the caries prevalence of preschoolchildren in Baja with data from 1975 and 2) to evaluate the effect of 0.2% sodium-fluoride mouthrinsings practiced during the last 4 yr. In 20 kindergartens of Baja 1462 children between 3 and 6 yr of age were investigated. All the children were participants in an oral hygiene motivation program and fluoride rinsings, performed generally monthly, but at least 10 times in a year. The dental investigations of the primary teeth were carried out by the same team as in 1975. The frequency of caries-free children increased from 18.8% in 1975 to 24.8% in 1982. The dmft mean values decreased only in the 5- and 6-yr-old children. PMID- 3862508 TI - Streptococcus mutans and caries prevalence in rural Thai. AB - The prevalence of dental caries was studied in 521 rural Thai using the DMFT index. The oral habit of chewing betel nut was recorded. Samples of drinking water were examined for fluoride concentrations. Plaque material from 500 patients was examined qualitatively for S. mutans. The DMFT (dmft) index score was comparably high for patients under 10 yr of age (4.12); the difference between the DMFT (dmft) score of this age group and the other age groups was statistically significant. The average DMFT (dmft) score was 1.34 +/- 2.67. There was no relation between oral habits and caries prevalence. Fluoride concentrations of the water samples were between 0.11 and 1.64 ppmF- X 14.2% of 500 plaque samples were positive for S. mutans, predominantly of biotype I. The higher prevalence of caries in children may be attributable to changing patterns of life and nutrition. PMID- 3862509 TI - Incidence of pain conditions in dental practice in a Danish county. AB - From September 1981 to February 1982, an epidemiologic study was carried out on the incidence of pain conditions among patients between 18 and 70 yr of age in 30 dental practices in Ribe County, Denmark. A total of 35 464 patients consulted the 50 participating dentists during the study period. 823 patients consulted the dentist due to pain. The most frequent cause of pain was caries sequelae (pulpitis (35%) and acute apical periodontitis (31%)). There was a significant difference in the distribution of the diagnoses between patients with regular and non-regular dental care. Although the data in the present study may not be representative for the entire Danish population, it seems reasonable to assume that in Denmark there are at least 70 000 annual consultations to a dentist due to pain. Furthermore, a minimum of 4000 patients can be expected to be absent from work annually, due to illness caused by dental pain. PMID- 3862510 TI - Preliminary report on prevalence of oral cancer and precancerous lesions among dental patients in Saudi Arabia. AB - The study consisted of 674 consecutive examinations done on patients on their first visit the College of Dentistry, King Saud University, Riyadh, over a 1-yr period starting January 1983. Men outnumbered women and 69% of the patients were Saudi Arabian nationals. Oral cancer was seen in one non-Saudi, whereas the overall prevalence of leukoplakia was 1.9%. The other lesions were leukoedema 8.3%, nicotinic stomatitis 2.5%, and lichen planus 0.6%. Except for lichen planus, all the lesions were almost exclusively found in men with a close relationship to oral tobacco habits. Leukoedema, nicotinic stomatitis and leukoplakia showed a tendency to occur together in varying combinations among smokers. PMID- 3862511 TI - Closed medical staffs are not inevitable. PMID- 3862512 TI - Comparison of tears and lacrimal gland fluid in the rabbit and guinea pig. AB - The excretory duct of the lacrimal gland of rabbits and guinea pigs was cannulated in situ for collection of pure lacrimal gland fluid, not contaminated by secretions from the Harderian gland or contributions of desquamating cells of the conjunctival and corneal epithelium. Tears as well as lacrimal gland fluid of both species showed a species-specific and molecular weight-dependent pattern after sodium dodecylsulphate-polyacrylamide (SDS-PAA) gradient slab gel electrophoresis. The most striking difference in both species was a protein corresponding to serum albumin present in tears and almost lacking in lacrimal gland fluid. Likewise, a variety of enzymes, total protein and PGE2 were measured in tears and lacrimal gland fluid. For rabbit tears the lacrimal gland is the primary tissue source of lysozyme (LZM), beta-hexosaminidase (beta-hex), angiotensin-converting enzyme (ACE), plasminogen activator (PA) and total protein, while lactate dehydrogenase (LDH) and the greater part of prostaglandin E2 (PGE2) are present in rabbit tears mainly as products from other ocular tissue sources. In guinea pig tears peroxidase (POD), ACE, PA and less PGE2 are exceted by the lacrimal gland, amylase (AMY), LDH and a substantial amount of PGE2 are added to the guinea pig tears by other ocular tissue sources. Beta-hex and total protein are released from the lacrimal gland and from other ocular tissue sources as well. PMID- 3862513 TI - Enhancement of antigen expression on acute lymphoblastic leukemia (ALL) cells by cell incubation. AB - Leukemic cells from blood and/or marrow specimens of 64 acute lymphoblastic leukemia (ALL) patients were examined for the expression of the Ia-like antigen (Ia) or ALL cell-associated antigen (ALLA) employing indirect immunofluorescent techniques before and after overnight incubation (18 hours) at room temperature in Roswell Park Memorial Institute medium 1640. In 20 cases, the post-incubation cells showed an augmented intensity of the fluorescent stain and an increased (greater than 15%) percentage of the ALLA and/or Ia-bearing cells. Evaluation of cell viability after incubation and of non-specific staining in control preparations using normal rabbit serum in lieu of specific rabbit antiserum to ALLA or Ia excluded selective cell death and increased non-specific stain as causes of the observed increase in fluorescent cell staining. The enhanced antigen expression was observed in those samples in which antigens were detectable on only a small fraction of the leukemic cells. The results demonstrate the necessity of re-examination of leukemic cells for the presence of ALLA and Ia following overnight incubation especially in antigen negative cases. PMID- 3862514 TI - Anthracycline resistance and consequences of the in situ-in vitro transfer. AB - Adriamycin-resistant and normal cells of the sarcoma 180 of the mouse undergo qualitatively different deflections from the in situ state when prepared for an experiment. Resistant cells perform a fast reactive decline in the proliferative activity. They are capable of quiescence as defined by the time needed for the induction of the proliferation. Sensitive cells seem to be unable to quiesce and are only slowed down. These facts must be taken into account in interpretation of similar results. Differences in experiments need not necessarily imply differences in situ. Such in vitro appearing differences between sensitive and adriamycin-resistant cells of the murine sarcoma 180 include the retention of the mitochondria-specific stain rhodamine 123 and the uptake of anthracyclines, both being reduced in resistant cells. After labeling sensitive cells with thymidine in vivo and sorting them according to their rhodamine 123-derived fluorescence, the label was only found in the major, highly fluorescing fraction. A small low fluorescing fraction remained unlabeled. We were able to demonstrate similar results with labeled anthracyclines applied to both the sensitive and the resistant cells in a short period between the removal of the cells from the ascites and the cell sorting. The adriamycin resistance seems to be joined with the ability of the cells to reduce their proliferative activity following changes to unfavorable conditions in vitro. Quiescent cells of the resistant line demonstrate the "anthracycline pump." Substances which are known to increase the sensitivity of anthracycline-resistant cells (TWEEN, verapamil) also shift the cells from low to high rhodamine 123-fluorescence. PMID- 3862515 TI - Differences between labeling index and DNA histograms in assessing S-phase cells from a homogeneous group of chronic phase CML patients. AB - The reliability of DNA histogram analysis in accurately estimating S-phase cells from human tumors was tested by comparing the results to those of simultaneously obtained tritiated thymidine labeling index (LI) studies. Patients with chronic myelocytic leukemia (CML) during chronic phase were selected for study because the Philadelphia chromosome (Ph) was the only cytogenetic abnormality in each case and, since it is a balanced translocation, the frequently encountered problem of aneuploidy in human neoplastic cells was avoided. Unfortunately, when 30 CML patients were studied simultaneously by DNA histogram analysis and LI studies, the correlation coefficient between the two results was only r = 0.611. A comparison of three different mathematical programs for DNA histogram analysis showed that none was completely satisfactory. We conclude that DNA histogram analysis does not provide the same data as autoradiographically processed labeling index studies even in patients with Ph-positive CML during the chronic phase when the situation is not complicated by additional aneuploidy. PMID- 3862516 TI - Anaerobic infections. Part I. PMID- 3862517 TI - [Secondary neoplasms following tumor and leukemia therapy in childhood. Report of 64 cases]. AB - 64 second neoplasms, occurring after therapy of malignant tumors or leukaemia in childhood, came to light in the course of a collaborative group investigation. Most frequent initial diseases were acute lymphoblastic leukaemia (n = 19), Morbus Hodgkin (n = 9), and retinoblastoma (n = 8), whereas osteosarcoma (n = 13), cancer of the thyroid (n = 10) and acute non-lymphoblastic leukaemia (n = 8) were predominant among the second malignant neoplasms. In 36 of 50 irradiated children there was a clear relationship between the localisation of the second neoplasm and the earlier irradiated zone. In other cases, in particular in children with retinoblastoma as initial disease or neurofibromatosis, genetic influences on the origin of the second neoplasms come into question. The preponderance of Morbus Hodgkin after acute lymphoblastic leukaemia (n = 7) must be regarded as extraordinary; in 6 of the 7 children the second neoplasm appeared after a very short interval. A distinct effect of previous treatment with cytostatics on the occurrence of second neoplasms was not seen. The differing time intervals between the occurrence of the first and the second neoplasms in the separate subgroups point toward heterogenous causes being involved in the development of second neoplasms. PMID- 3862518 TI - Practical therapeutics. The impact of genetic engineering in drug development. PMID- 3862519 TI - [What are the advantage of a clinical functional diagnosis?]. PMID- 3862520 TI - [What are the advantages of instruments in functional analysis?]. PMID- 3862521 TI - [What are the advantages of functional therapy and what are its limits?]. PMID- 3862522 TI - [Functional status]. PMID- 3862523 TI - [Necessity of clinical functional diagnostics]. PMID- 3862524 TI - [Examiner agreement with the Krogh-Poulsen method of clinical functional analysis]. PMID- 3862525 TI - [Ortho-function of the masticatory system]. PMID- 3862526 TI - [Recordings of mandibular movements with Sirognathography]. PMID- 3862527 TI - [Efficacy of functional diagnostics and computer tomography in dysfunctional and functionally healthy stomatognathic systems]. PMID- 3862528 TI - [Determination of the position of the articular process]. PMID- 3862529 TI - [Biomechanics of temporomandibular clicking. I. Disk function in eccentric bruxism]. PMID- 3862530 TI - [Reaction of the masticatory musculature to occlusion-dependent functional disorders. An electromyographic study]. PMID- 3862531 TI - [Axial differences in models mounted on the articulator using the Bonwill triangle and facebow transfer]. PMID- 3862532 TI - [Relation between jaw size and model position in the articulator]. PMID- 3862533 TI - [To what extent does the so-called quickmount facebow satisfy clinical requirements for precision?]. PMID- 3862534 TI - [Comparative study of direct and indirect registration of mandibular movements]. PMID- 3862535 TI - [Corrective osteotomies for the treatment of temporomandibular joint dysfunction syndrome]. PMID- 3862536 TI - [Evaluation of function in complete denture patients]. PMID- 3862538 TI - [Corrosion properties of dental alloys]. PMID- 3862537 TI - [Demands placed on and requirements for the materials properties of dental alloys]. PMID- 3862539 TI - [Biocompatibility of dental alloys]. PMID- 3862540 TI - [Clinical evaluation of dental alloys]. PMID- 3862541 TI - [Strength properties of dental ceramics]. PMID- 3862543 TI - [Long-term reaction of alveolar ridge mucosa and bone to denture stress]. PMID- 3862542 TI - [In vitro induced corrosion activity in various peri-pulpal pins]. PMID- 3862544 TI - [Conservative therapy of maxillary sinusitis in oro-antral fistulas]. PMID- 3862545 TI - [Pain-correlated cerebral cortex potentials in man after electrical stimulation of the dental pulp]. PMID- 3862546 TI - [Condylar hyperplasia--clinical and radiologic findings]. PMID- 3862547 TI - [Epidemiologic study on functional disturbances of the masticatory system]. PMID- 3862548 TI - [Myoarthropathies and occupation. An epidemiologic study. A brief report]. PMID- 3862549 TI - [Visualization of the articular disc in computer tomograms]. PMID- 3862550 TI - [Interference behavior of the masseter reflex and the tongue-jaw reflex in man. Methods and preliminary findings]. PMID- 3862551 TI - [Surgical correction of functional disturbances of the stomatognathic system after temporomandibular joint fractures]. PMID- 3862552 TI - [Identical model mounting without traditional mounting plates]. PMID- 3862553 TI - [Prescriptions written for antibiotics in dental practice]. PMID- 3862554 TI - [Clinical survey on the occurrence of epulis]. PMID- 3862555 TI - [Allergy and dentistry from the dentist's point of view]. PMID- 3862556 TI - [Methods in caries epidemiology--a critical overview]. PMID- 3862557 TI - [Comparative studies on various methods for assessing surface structures of prepared teeth]. PMID- 3862558 TI - [Computer-assisted analysis of the numerical data of the mediotrusive trajectory in conventional axiography]. PMID- 3862559 TI - [Diagnosis and treatment of cracked tooth syndrome]. PMID- 3862560 TI - [In vitro experiments on the problem of the development of undermining enamel caries]. PMID- 3862561 TI - [The importance of test conditions in scientific experiments, as demonstrated by the example of tooth mobility]. PMID- 3862562 TI - [Effect of extracellular pH values on the accumulation of fluoride by Streptococcus mutans]. PMID- 3862563 TI - [Light color of dental lamps. I. Dental operatory lights]. PMID- 3862564 TI - [Orthodontic treatment--a risk factor in functional and occlusal disorders?]. PMID- 3862565 TI - [The importance of immunology in periodontal diseases and the mouth mucosa diseases]. PMID- 3862566 TI - [5 years' experience with microsurgical small bowel transfer in the reconstruction of extensive soft tissue defects of the oropharynx]. PMID- 3862567 TI - [Conclusion of root growth after partial vital amputation]. PMID- 3862568 TI - [Quality of ground enamel surfaces and preparation margins]. PMID- 3862569 TI - [Periodontal findings after alveolar process repositioning using interdental osteotomy]. PMID- 3862571 TI - [Linear coefficient of thermal expansion for bovine enamel and dentin]. PMID- 3862570 TI - [Reaction of amine hydrofluorides with surface enamel. I. Effect of different cations, concentrations and exposure times (in vitro studies)]. PMID- 3862572 TI - [Methacrylate-integrated embedding methods for sawed, ground and milled preparations]. PMID- 3862573 TI - [The light of the special Color-i-Dent lamp (the Waldmann lamp)]. PMID- 3862574 TI - [Characteristics of the nucleic component of a nucleoprotein complex secreted by tumor cells]. AB - The characteristic of the nucleic component from the nucleoprotein complex excreted by tumour cells into ascitic fluid is presented. Using enzymes which hydrolyze nucleic acids and applying the methods of cellulose chromatography and ethidium bromide identification of the double-stranded structure of nucleic acids it is shown that the nucleic component of the excreted complex is a heterogeneous system presented by double-stranded structures which involve DNA-RNA hybrid molecules. PMID- 3862575 TI - [Preparation and characteristics of a cell line from transplantable Svec's leukemia]. AB - The procedure for obtaining the CL-C5 suspension cell line from the transplantable rat leukemia (erythromyelosis) is described. Cytochemical and biochemical features of CL-C5 blast cells are established to be typical of T cells at the differentiation stage, corresponding to thymocytes. The results obtained permit considering CL-C5 cell line as that having phenotypical indications of lymphocytes and retrovirus production lost due to the selection in the cell population. PMID- 3862576 TI - Effects of H2-antagonists on androgen imprinting of male hepatic functions. AB - Many of the sex-differentiated functions of the liver of adult male rats depend upon the occurrence of neonatal androgen imprinting, a brief surge of androgen early in life. We investigated whether androgen imprinting is necessary for the development and maintenance of levels of a microsomal enzyme, estrogen-2 hydroxylase (E-20Hase), and a male-specific cytosolic estrogen binder (MEB) which are higher in adult male than in adult female rats. Cimetidine, a weakly antiandrogenic H2 blocker, was administered to pregnant and lactating rats from day 12 of gestation through weaning on day 21. Livers of male progeny, 120-150 days of age, were assayed for E-2OHase and MEB activity; a maternal dose equivalent to 2.5 times the usual human dose inhibited MEB activity in the levels of the offspring by 40% but had no effect on E-2OHase. However, a higher dose (5 times the human dose) was effective in reducing the E-2OHase activity by 50%. Rats whose mothers had received either no drug or an equivalent dose of ranitidine, another H2 blocker without antiandrogenic activity, were used as controls. The groups were not different in hepatic cytosolic androgen receptor content, body weight, or serum testosterone. In other studies, the requirement of neonatal androgen imprinting for full expression of adult levels of MEB and E 2OHase was determined. Female rats, which have low levels of E-2OHase and undetectable levels of MEB, were given androgen on day 1, on day 60 after ovariectomy, or at both times. Levels of E-2OHase equivalent to those in adult males were induced in females receiving both androgen treatments, whereas either treatment alone induced E-2OHase to the level of that in males castrated at adulthood or neonatally, which is about 50% that in normal male controls. In addition, MEB levels were induced in females to 85% of that in normal males by both androgen treatments and to 50% by administration of androgen to adult females or to adult males castrated neonatally. Administration of androgen to females during the neonatal period only did not induce MEB. We conclude that both MEB and E-2OHase require androgen imprinting for full expression in adult male rats. PMID- 3862577 TI - Estradiol acts as a competitive inhibitor of the 3 beta-hydroxysteroid dehydrogenase/delta 5-delta 4 isomerase enzyme of cultured Leydig tumor cells. AB - To study the local regulatory mechanisms involving steroid hormones in steroidogenic cells, the effect of estradiol on steroidogenesis was investigated using MA-10 Leydig tumor cells. Estradiol inhibited progesterone biosynthesis in MA-10 cells in a dose-dependent manner. Inhibition of progesterone biosynthesis by estradiol was associated with a concomitant accumulation of pregnenolone in the incubation medium. Estradiol inhibited the activity of 3 beta-hydroxysteroid dehydrogenase/delta 5-delta 4 isomerase by a chemical mechanism which is not mediated through the cellular estrogen receptor. Thus, the estrogen receptor agonist diethylstilbestrol did not inhibit this enzyme activity, nor could this agent block the effect of estradiol on the enzyme. Furthermore, estradiol inhibited enzyme activity in isolated microsomes which do not contain estradiol receptor protein. Kinetic analysis of the inhibitory effect of estradiol on 3 beta-hydroxysteroid dehydrogenase/delta 5-delta 4 isomerase revealed that this steroid hormone functions as a competitive inhibitor of the enzyme, with an average apparent Ki of 1.8 microM. PMID- 3862578 TI - Increased ferritin levels in the fluid of thyroid cyst. AB - High ferritin levels in the aspirate of thyroid cyst (Six yellow clear, 4 yellow turbid and 10 chocolate colored turbid) without apparent sings of malignancy were found. The mean concentration in the 3,000 X g supernatant of the fluid was 40,116 ng/ml, and the 3,000 X g precipitate was 11,147 ng/ml. All cases showed normal levels of serum ferritin. Con A binding with ferritin was distributed from low to high. These ferritins showed a molecular weight of approximately 450,000 which was the same as found in human spleen and liver. The continuous increase in ferritin levels in thyroid cyst fluid was found by a chronological study in some cases. When tumor markers such as CEA, NCA, CA 19-9 and alpha 1-acid glycoprotein (alpha 1-AG, acute phase reactant) were examined simultaneously, an increase in some of the cyst fluid was observed. However, the incidence and the rate of increase of these tumor markers and acute phase reactant were low compared to ferritin. Neither a correlation between ferritin and CEA, nor between ferritin and CA 19-9 was found. The increase in ferritin in thyroid cyst fluids may be due to the increased synthesis, release and storage by the inflammatory cells. PMID- 3862579 TI - Effects of parathyroid hormone and cortisol on prostaglandin production by neonatal rat calvaria in vitro. AB - We have examined the effects of parathyroid hormone (PTH) and cortisol on the production of prostaglandins, particularly PGE2, by neonatal rat calvaria cultured in a chemically-defined medium. Although there was considerable variability, calvaria produced large amounts of PGE2 in control cultures, reaching medium concentrations of 40 to 200 nM. PGE2 release was partially inhibited by cortisol at 10 nM and markedly inhibited at 100 nM. Bovine 1-34 synthetic PTH produced an increase in PGE2 concentration which was most striking in the presence of a low concentration of cortisol (10 nM). The medium also contained large amounts of 6-keto PGF1 alpha, the metabolite of prostacyclin, which showed similar changes in response to PTH and cortisol. Thromboxane B2 concentrations were low and unaffected by these hormones. 1,25-dihydroxyvitamin D did not increase medium PGE2 concentration. Since PGE2 is a potent stimulator of bone resorption and formation, some of the effects of PTH as well as cortisol may be mediated by their ability to alter PGE2 production in skeletal tissue. PMID- 3862581 TI - Therapy of osteogenic sarcoma: local, systemic or both? PMID- 3862580 TI - Local therapy of rhabdomyosarcoma, osteosarcoma and Ewing's sarcoma of children and adolescents. AB - Local control of the primary tumour is a fundamental requirement for clinical cure. Towards this aim, the primary tumour must be diagnosed early and identified histologically. The size, extension, and spread within the patient must be defined precisely. In planning effective local therapy, additional questions must be answered including resectability, mutilation, sensitivity to radio- and chemotherapy, anticipated morbidity from therapeutic measures, etc. For osteosarcoma there is no reasonable alternative to radical surgery. Because of the 20% local recurrence rate of Ewing's sarcoma following radiotherapy, radical surgical removal of the primary tumour should be attempted whenever possible. For rhabdomyosarcoma, particularly for its embryonal histology, non-radical removal of the primary sarcoma is still compatible with a cure, provided adequate radio- and chemotherapy is also administered. Primary irradiation is indicated in radiosensitive unresectable primary tumours and may convert these into an operable state. Chemotherapy is the domain of prevention and treatment of metastatic disease. It has, however, also a proved effect on primary tumours and, in several recent protocols, precedes local therapy. PMID- 3862583 TI - Effects of leukocyte interferon (E. coli) on human bone sarcoma growth in vitro and in the nude mouse. AB - Effects of highly purified human leukocyte interferon (rIFN-alpha 2) on colony formation, DNA synthesis and proliferation in nude mice of tumor cells from eight bone sarcomas have been studied. rIFN-alpha 2 produced a dose-dependent inhibition of [3H]thymidine incorporation by sarcoma cells. Even at high doses (10(4) U/ml), however, [3H]thymidine uptake could not be completely blocked by rIFN-alpha 2. In a cloning assay three established sarcoma cell lines and five other sarcoma samples obtained after short-term in vitro culture were found to be sensitive to various degrees to rIFN-alpha 2, complete inhibition being seen only at 10(4) U/ml. Three sarcomas were sensitive in the nude mouse model. Scheduling experiments revealed that rIFN-alpha 2 produces a delay in tumor growth only when administered either before or shortly after tumor implantation. Therefore rIFN alpha 2 appears to be most active when tumor size is small and growth not exponential, indicating that rIFN-alpha 2 may play a role in an adjuvant setting. Growth sarcomas strongly suppressed by rIFN-alpha 2 in the cloning assay was markedly inhibited in the nude mouse. One sarcoma which was only moderately sensitive in the cloning assay was resistant in the animal experiment, confirming the predictive value of the clonogenic assay. Although the present findings demonstrate strong antitumor activity of rIFN-alpha 2 against human bone sarcoma cells they should be interpreted with caution mainly because the high rIFN-alpha 2 levels used in the experiments cannot be maintained in patients over a prolonged period. PMID- 3862582 TI - Activity of 4-demethoxydaunorubicin by the oral route in advanced breast cancer. AB - The new anthracycline-analogue 4-demethoxydaunorubicin (4-DMDR) was administered orally at the dose of 15 mg/m2 daily for three consecutive days and repeated every 21-28 days on 29 patients with advanced pretreated breast cancer. A partial remission was observed in 7/25 evaluable patients (28%) for a median duration of 7 months. Side-effects include leukopenia in 93% of the patients (less than 1000 WBC/mm3 in 7%), nausea in 41%, mild vomiting in 17%, diarrhea in 10% and alopecia in 10% of the patients. No definitive conclusion is possible regarding cardiotoxicity. Only mild changes in ECG were observed in two patients. This study shows that 4-DMDR administered orally is well tolerated in the majority of patients and has antitumor activity in advanced breast cancer. PMID- 3862584 TI - Aclarubicin (aclacinomycin A) in the treatment of relapsing acute leukaemias. AB - Forty patients with relapsing acute leukaemias were treated with aclacinomycin A (aclarubicin, ACM), 25 mg/m2 i.v. daily for 7 days. Twenty-nine patients with acute myeloid (AML) and five with acute lymphoblastic (ALL) leukaemia were evaluable. The overall response rate was 29.5%. Eight complete (CR) and one partial (PR) remissions were achieved in AML (31%). A high CR rate was induced in patients treated at first relapse without prior reinduction (6/12 patients). A small proportion of leukaemias resistant to daunorubicin or doxorubicin responded to ACM (3/17 patients). Median remission duration was 5.5 months (range: 2-9 months). The most common toxic effects were nausea, vomiting, stomatitis and diarrhoea. Acute cardiotoxic effects were documented in three patients. Congestive cardiomyopathy was not observed despite prior treatment with anthracyclines. We conclude that the present dose scheduling of ACM is effective in the treatment of relapsing AML and that it should be introduced in combined chemotherapy in phase III trials to compare its activity to that of daunorubicin or doxorubicin. PMID- 3862585 TI - The defect in delayed-type hypersensitivity of young adult SJL mice is due to a lack of functional antigen-presenting cells. AB - SJL mice exhibit a strain-specific age-dependent delay in the maturation of delayed-type hypersensitivity (DTH) responsiveness. They do not attain "adult" levels of DTH responsiveness until the 10th week of age, which is 4 to 6 weeks later than the other strains of mice tested. In this report we demonstrate that spleen cells, resident peritoneal cells and thioglycollate-elicited peritoneal exudate cells are all able to transfer DTH responsiveness from naive 12-week-old DTH responders to 6-week-old nonresponders. Transfer prior to immunization was more efficient at eliciting a response than transfer after immunization. As few as 5 X 10(4) cells from 12-week-old SJL mice can adoptively transfer responsiveness to unresponsive 6-week-old animals. The active cell was found to be adherent, radiation (2000 rds) resistant, I-A+, Thy-1- and Mac-1+. I-A compatibility between the adoptively transferred population and the nonresponder mice is required. These data suggest that young adult SJL mice lack a functional population of antigen-presenting cells specific for DTH and that the appearance of these cells is under maturational control. PMID- 3862586 TI - The effects of PGE2 and CL 115,347, an antihypertensive PGE2 analogue, on human blood platelet behaviour and vascular contractility. AB - The effects of prostaglandin E2 (PGE2) and an antihypertensive PGE2 analogue, CL 115,347 (d,l-15-deoxy-16-hydroxy-16 (alpha/beta)-vinyl prostaglandin E2 methyl ester), were examined on human blood platelet behaviour in platelet-rich plasma (PRP) and in whole blood (WB). The effects on baseline tone of isolated human carotid arterial strips were also examined. PGE2 had a biphasic effect on platelet behaviour, potentiating ADP- and collagen-induced aggregation at low concentrations (10(-8)-10(-6) M) and inhibiting aggregation at higher concentrations (10(-5) M). In contrast, low concentrations of CL 115,347 (10(-9) 10(-5) M) had no effect on platelet aggregation and higher concentrations (10(-4) M) potentiated ADP- and collagen-induced aggregation. The effects of PGE2 and CL 115,347 on adrenaline-induced aggregation were different to those of the other aggregating agents since only inhibition of platelet aggregation was observed. In the presence of PGI2 (10(-9)-10(-8) M) however, PGE2 (10(-8)-10(-6) M) was able to potentiate both ADP- and adrenaline-induced aggregation. Results obtained in WB were similar to those obtained in PRP. Both PGE2 and CL 115,347 contracted isolated human carotid arterial strips in a dose-dependent manner, with PGE2 being approximately 20 times more potent than its synthetic analogue. These results indicate that CL 115,347 is less potent than PGE2 in its effects on human blood platelet behaviour and vascular contractility in vitro. PMID- 3862587 TI - Head posture and the morphology of the first cervical vertebra. PMID- 3862588 TI - Facial growth and lower premolar extraction space closure. PMID- 3862589 TI - Radiation dose during the dental radiographic techniques most frequently used during orthodontic treatment. PMID- 3862590 TI - The prevalence and aetiology of prolonged dummy and finger-sucking habits. PMID- 3862591 TI - EMG activity in neck and masticatory muscles in relation to extension and flexion of the head. PMID- 3862592 TI - Bone-muscle interactions in the muscular dystrophic mouse. PMID- 3862593 TI - A statistical comparison of three sets of normative data from which to derive standards for craniofacial measurement. PMID- 3862594 TI - A cephalometric evaluation of hard and soft tissue changes during class III traction. PMID- 3862595 TI - Treatment with an orthopaedic appliance system. PMID- 3862596 TI - Action of 1,25-(OH)2D3 in nude mice bearing transplantable human myelogenous leukemic cell lines. AB - After cyclophosphamide priming, subcutaneously (s.c.) transplanted cells from established human leukemia cell lines U937, K562, or HL-60 consistently yielded single, nonmetastatic tumors. Tumorigenesis with KG-1 cells was inconstant. Within each cell line, cytologic, electron-microscopic, cytogenetic, isoenzyme, immunochemical, and enzyme cytochemical studies confirmed identity of cultured and tumor cells. Adenosine triphosphatase reactivity was limited to leukemic cells in vivo. Isoenzyme electrophoretic patterns, distinct for each cell line, provided a reliable criterion to establish clonality and to verify tumor cell origin. Antitumor activity of the active vitamin-D3 metabolite 1,25-(OH)2D3 was assessed in vivo against U937, K562, and HL-60 cells by cell transplantation and concurrent s.c. contralateral implantation of miniosmotic pumps containing the 1,25-(OH)2D3 in a propylene glycol vehicle. Tumors developed in all treated U937 mice, 50% with K562 and 25% bearing HL-60 transplants. All transplants proliferated in mice either with pumps containing only vehicle or no pumps. Coincidence of tumor and vehicle decreased survival time. No differences in cytoreactivities or morphology were apparent between cultured cells and tumor cells in treated or untreated mice. This nude mouse system is useful for in vivo studies of human myelogenous leukemia cells. Implanted miniosmotic pumps provide controlled delivery of antineoplastic agents and their vehicles for in vivo studies. 1,25-(OH)2D3 may be a valuable adjunctive therapeutic for control of human myelogenous leukemias. PMID- 3862597 TI - Enhancement of erythroid differentiation in clones of human leukemic cell line K562 by fetal calf serum. AB - Clone cells of K562 that are able to synthesize hemoglobin spontaneously on a relatively high level were obtained by cell-cloning technique. The clone cell proliferated 25 times by day 6 in culture, and the growth rate was not affected by changing the dose of fetal calf serum (FCS) from 5% to 30%. On the other hand, the erythroid differentiation could be linearly enhanced by increasing dosage of FCS, reaching a maximum after four days in culture. The wild-type K562 cells were also slightly stimulated to synthesize hemoglobin by adding FCS (30% final concentration). The enhancing effect of 30% FCS on the erythroid differentiation in the clone cells was greater than that of 12.5 microM hemin, while in the wild type cells the relationship was reversed. There were no effects of erythropoietin (Epo) on the hemoglobin synthesis in either the clone cells or the wild-type cells. When various kinds of sera were added to the standard culture of the clone cells, only FCS had the enhancing effect. These results suggest that spontaneous erythroid differentiation is not induced by hemin or Epo in FCS but by FCS specific substance(s). PMID- 3862598 TI - Different Ia antigen characterization between granulocyte progenitor cells (CFC G) and monocyte-macrophage progenitor cells (CFC-M). AB - Ia-like antigen-positive (Ia+) and -negative (Ia-) cell populations were separated from human cord blood cells and bone marrow mononuclear cells by a rosette technique with a combined use of staphylococcal protein-A-coated bovine red blood cells and the monoclonal OKIa 1 antibody, or by using a cell-sorting technique. Colony-forming units-granulocytes-monocytes-macrophages (GFU-GM) were assayed in a semisolid agar culture, and colony-forming cells-granulocytes (CFC G) were differentiated from colony-forming cells-monocytes-macrophages (CFC-M) by double staining for esterase activity. The majority of CFC-G in cord blood was grown in the Ia+ fraction; Ia+ CFC-G/Ia- CFC-G = 1.62 +/- 0.34 (mean +/- SD), which was similar to the ratio in bone marrow (Ia+/Ia- = 1.80 +/- 0.37). In contrast, the majority of CFC-M in cord blood was grown in the Ia- fraction; Ia+/Ia- for CFC-M = 0.50 +/- 0.09. The predominance of CFC-G in the Ia+ fraction in contrast to predominance of CFC-M in the Ia- fraction was confirmed by using a cell-sorting technique. T-lymphocyte depletion and the culture supernatants of Ia+ and Ia- cells did not affect differentiation of CFC-G and CFC-M. These data suggest that there are potent differences in the expression of Ia-like antigens between CFC-G and CFC-M, indicating that the Ia+ progenitor cell population generates predominantly CFC-G, whereas the Ia- population generates mainly CFC-M during the maturation process in granulopoiesis. PMID- 3862599 TI - Studies on the use of nonhuman primates to determine the DR status of the human hematopoietic stem cell. AB - Monoclonal antibodies that recognize monomorphic determinants of human DR are potentially useful for the in vitro elimination of malignant cells from marrow for use in autologous transplantation. While DR is expressed on normal hematopoietic progenitor cells and the cells of the majority of the hematologic and lymphoid malignancies, there is the possibility that DR may not be expressed on the hematopoietic stem cells responsible for marrow regeneration after transplantation. To resolve the uncertainty regarding the DR status of the human stem cell, we determined whether antihuman DR monoclonal antibodies recognized analogous antigens on nonhuman primate hematopoietic progenitor cells to determine an appropriate animal transplant model. We used antihuman DR plus C' mediated lysis of marrow progenitor cells as an indicator of whether the analogous nonhuman primate cells express similar antigens. Using two potent C' fixing anti-DR monoclonal antibodies separately (5F3, AMG-12), human progenitor cells are reduced by 90%-100%. The range of progenitor cell depletion varied more widely with the nonhuman primates studied: 80%-99% with cells from the chimpanzee, 48%-100% with cells from the orangutan, and 62%-100% with cells from the rhesus monkey. Despite this, the majority of animals yielded results identical to that seen with human cells. We concluded that autologous transplantation with DR-depleted rhesus bone marrow into a lethally irradiated animal would be a practical and expeditious means to determine the DR status of the cell responsible for marrow regeneration, and by inference the DR status of the human hematopoietic stem cell. PMID- 3862600 TI - Growth inhibitory effect of gene-cloned interferons on human myeloblast colonies. AB - The effect on marrow myeloblast colony formation in blood from nine patients with acute myeloid leukemia was studied by using three recombinant-DNA-derived human leukocyte interferons (IFN alpha 2, IFN alpha-A, and IFN alpha-C). In preliminary experiments, a brief exposure of leukemic marrow cells to IFN alpha resulted in a sharp increase in the IFN-induced enzyme 2-5A synthetase, indicating the expression of IFN cell receptors as well as the ability of leukemia cells to respond metabolically. Dose-response studies showed a dose-dependent suppression of myeloblast colony formation in all experiments using concentrations of 10(2) 10(5) U/ml of the three IFN subtypes. In self-renewal assays derived from the primary cultures that initially contained IFN alpha 2, a "carryover" antiproliferative effect was observed with a dose-dependent decline in secondary growth. In comparison studies of IFN alpha-A and IFN alpha-C, the suppressive effect on primary myeloblast growth was much more pronounced with IFN alpha-C at concentrations of 10(3) U/ml and higher; in self-renewal assays, the antiproliferative effect of IFN alpha-C on secondary growth was no longer observed, whereas that of IFN alpha-A persisted. These three subtypes of gene cloned IFN have antileukemic properties in vitro, with differences in degree of suppression of primary myeloblast growth and of self-renewal. PMID- 3862601 TI - Tobacco smoke: respiratory tract defense mechanisms and therapeutic implications. An international symposium held in Lugano, CH, April 13-14, 1984. PMID- 3862602 TI - Protective action of sulfur compounds against aldehyde toxicants of cigarette smoke. AB - Acetaldehyde, acrolein, and formaldehyde are important toxicants of cigarette smoke. Since acetaldehyde is a toxicant common to both heavy alcohol drinking and heavy cigarette smoking, protection studies were undertaken in rats first against acetaldehyde lethality and later against acrolein and formaldehyde lethality. This paper summarizes findings from previously published studies. With acetaldehyde (LD 90 dose/72 hrs.) protection studies were carried out by pretreatment with a high oral dose (2 mmoles/kg) of L-cysteine and 17 other sulfur compounds. Good protection (80% or more survivors) was obtained with L cysteine, N-acetylcysteine, thiamin . HCl, sodium metabisulfite, L-cysteic acid, and a combination (CTA) of L-cysteine, thiamin . HCl, and L-ascorbic acid. N acetylcysteine, L-cysteic acid, and the combination CTA gave 100% protection (i.e. 100% survivors). With acrolein (LD 95 dose/72 hrs.), protection data showed 80% survivors with L-cysteine and 95% with the combination CTA. With formaldehyde (LD 95 dose/72 hrs.), protection resulted in 20% survivors with L-cysteine and 55% with the combination CTA. However, protection against formaldehyde lethality could be increased to 90% survivors by repeated dosing with L-ascorbic acid per se over a two day period prior to administration of formaldehyde. Further animal experimentation is necessary before any extrapolation of these findings for human use can be considered. Due to current interest, the potential value of N acetylcysteine as a protectant is also discussed. PMID- 3862603 TI - Pharmacoprevention of tobacco smoke effects on macrophage cells. AB - Cigarette smoke components produce a variety of morphologic, physiologic, biochemical, and enzymatic changes in pulmonary alveolar macrophages, cells which are important in pulmonary antibacterial defenses, cellular regulatory activity, and tissue pathogenesis of inflammation, proteolysis and fibrogenesis. A common denominator of enzymes found to be inhibited by cigarette smoke components is a sulfhydryl moiety which is critical to the functioning of the enzyme and highly susceptible to oxidant activity of substances with the properties of agents in cigarette smoke. The inhibitory effect of cigarette smoke components on glyceraldehyde 3-phosphate dehydrogenase, calcium and magnesium ATPase, and endoperoxide E-isomerase is quantitatively prevented by the addition of sulfhydryl agents such as glutathione and cysteine. Furthermore, critical functions of whole cell activity such as phagocytosis, energy metabolism, and prostaglandin synthesis and release, functions which are dependent on sulfhydryl enzymes and are inhibited by cigarette smoke components, are protected when glutathione or cysteine are provided in advance of the exposure. These sulfhydryl agents also protect adhesion and cellular morphology from derangement by cigarette smoke components. These in vitro studies suggest a role for sulfhydryl containing agents in the prevention of environmentally-induced injuries to alveolar macrophages. PMID- 3862604 TI - Effect of oral acetylcysteine on tobacco smoke-induced secretory cell hyperplasia. AB - The present investigation explores whether N-acetylcysteine (NAC) inhibits the secretory cell hyperplasia known to occur experimentally in specific pathogen free (SPF) bronchitic rats. The animals were divided into 4 groups: no tobacco smoke (TS), no drug, no TS but NAC (1040 mg/kg body weight), TS but no drug, and TS plus NAC. NAC-treated animals showed no ill effects, TS exposed animals showed an initial fall in weight gain which never fully recovered (P less than 0.01): NAC did not protect. TS caused a significant increase (62-421%) in secretory cell number at all airway levels distal to the upper trachea (P less than 0.01) and NAC significantly inhibited it (P less than 0.01-0.05) in all, mostly in secretory cells containing acidic glycoprotein. TS exposure also induced a significant rise in epithelial cell concentration and of ciliated, mucous and especially basal cell number (P less than 0.001). NAC inhibited the mucous cell increase (P less than 0.001) and had 3 effects on the peak of dividing cells: it was (a) delayed until 3 days (b) greatly reduced in size and (c) prolonged at a lower level until its return to control values at 10 days of TS exposure. PMID- 3862605 TI - N-acetylcysteine protection against the toxicity of cigarette smoke and cigarette smoke condensates in various tissues and cells in vitro. AB - The protective effect of N-acetylcysteine on the toxicity of tobacco smoke condensates was investigated using different cellular in vitro systems. Cigarette smoke condensates, and the non-volatile and semi-volatile fractions separated from the condensate were used. All three smoke condensate fractions were toxic to isolated rat hepatocytes and lung cells and caused a loss of cell membrane integrity. A rapid depletion of cellular reduced glutathione (GSH) preceded the toxicity. The loss of GSH was due to conjugation of reactive compounds in the condensate fractions and not to oxidation since no increase in oxidized glutathione (GSSG) could be observed. N-acetylcysteine at a concentration of 1 mM protected both from the GSH loss and cell toxicity caused by the condensate fractions. The effect of the tobacco smoke condensate on the colony forming efficiency (CFE) of cultured human bronchial cells was also investigated. Already at concentrations of 50 micrograms/ml the survival decreased to 40% of control and at 100 micrograms/ml almost no cells formed colonies. N-acetylcysteine substantially increased survival when added at 10 mM concentration. PMID- 3862606 TI - Lung cell oxidant injury: decrease in oxidant mediated cytotoxicity by N acetylcysteine. AB - Lung cell damage mediate by polymorphonuclear leukocyte (PMN) reactive oxygen metabolites has been suggested as a pathophysiologic mechanism in a variety of acute and chronic pulmonary disease states, while oxidant injury may be a non specific cytotoxic mechanism. Reducing agents therefore represent one therapeutic direction for decreasing lung cell injury in several clinical circumstances. N Acetylcysteine (NAC) is a known antioxidant which can be distributed in soluble form to multiple intrapulmonary sites. We have therefore examined a possible role for NAC against oxidant injury in a controlled in vitro model for oxygen metabolite cytotoxicity. Our data suggest that extracellular NAC is able to protect lung cells against PMN mediated oxidant injury. Pre-exposure of lung cells to NAC results in decreased susceptibility to oxidant damage by increasing intracellular antioxidant defense systems. An increase in extracellular and/or intracellular resistance to toxic oxygen metabolites by NAC may be one approach to the prevention of in vivo lung oxidant injury. PMID- 3862607 TI - Effect of N-acetylcysteine in subjects with slow pulmonary mucociliary clearance. AB - There is significant evidence that in the general population there are subjects either with fast or slow pulmonary mucociliary clearance rates. At the moment we do not know the physiological importance of such finding. Slow clearers should be regarded as a subpopulation at risk for bronchopulmonary diseases. Therefore, it would be of considerable interest if their mucociliary function could be stimulated by drugs for preventive purposes. Twelve apparently healthy subjects with slow mucociliary clearance rate, selected in an epidemiologic survey in a non-smokers population were given 0.6 g oral N-acetylcysteine/day/60 days in a double-blind cross-over randomized study. After treatment their mucociliary clearance rates increased by about 35% as compared with baseline values, and returned to pre-treatment values after the washout period. Subjects were unresponsive to placebo treatment. It would seem that slow clearers are protected against lung aggressions by prevention and/or mucus-active drugs. PMID- 3862608 TI - Improvement of mucociliary transport in smokers by mucolytics. AB - The purpose of the present study was to compare the effects of two mucolytic drugs with different mechanism of action on mucociliary transport (MCT). N acetylcysteine (NAC-600 mg/day) and ambroxol (AMB-90 mg/day) were administered according to a double-blind cross-over scheme to 12 heavy smokers suffering from hypersecretory bronchitis and homogeneous reduction of the MCT. Placebo of both treatments was administered during an interval of ten days between the administrations of NAC and AMB. The entire treatment period was 30 days. The data were analyzed according to ANOVA for the two-period cross-over clinical trial. The results indicate that: NAC and AMB, administered both before and after placebo, produce a significant increase in MCT, NAC showed a slightly greater efficacy than AMB, but the differences are not statistically significant. The overall efficacy of NAC and AMB is consistently greater than that of placebo. The sequence of administration of the drugs does not influence their effect. PMID- 3862609 TI - Smoking control programmes. PMID- 3862610 TI - Protective action of thiols on neutrophil function. AB - A reduced chemotactic responsiveness of polymorphonuclear leukocytes (PMN) isolated from peripheral blood of smokers has previously been demonstrated and suggested to be an acute effect of smoking. The purpose of our studies were to determine: if the exposure of PMN to cigarette smoke in vitro inhibits chemotaxis; which fractions/components of smoke were the most potent inhibitors; the mechanism of chemotaxis inhibition. Whole smoke, the gas phase of smoke and the water-soluble fraction (WSF) of smoke condensate were all shown to be potent inhibitors of PMN chemotaxis. Upon fractionation of cigarette smoke condensate according to the polarity of the constituents, the polar fractions were the most potent inhibitors, while the nonpolar fractions were relatively weak inhibitors. Among the polar constituents tested the alpha, beta-unsaturated aldehyde, acrolein and crotonaldehyde were the most potent inhibitors of PMN chemotaxis. Cysteine completely protected PMN chemotaxis from the inhibitory effects of WSF, acrolein and crotonaldehyde, but provided only partial protection against the effects of whole cigarette smoke and the gas phase of smoke. Reduced glutathione completely protected against the effects of WSF and ony partially protected against the effects of the polar fractions of cigarette smoke. Impaired PMN chemotaxis as a result of smoke exposure may contribute to the increased susceptibility of heavy smokers to bronchopulmonary infections. PMID- 3862611 TI - A review of the effects of cigarette smoke on airway mucosal function. AB - This review examines the effects of tobacco smoke on the production and clearance of lower airway secretions, in healthy smokers and smokers with chronic bronchitis. Cigarette smoke shows to have a profound effect on airway mucociliary function, producing structural and functional changes in the mucosa. PMID- 3862613 TI - Acute effects of tobacco smoke on alveolar macrophages cultured in gas phase. AB - With a culture technique in gaseous phase which permits a direct contact between cells and the atmosphere, without any liquid interposition, we studied the short term effects of tobacco smoke on guinea pig alveolar macrophages (AM). Tobacco smoke had a cytotoxic effect on AM as evaluated by the decrease in cell ATP content, total smoke appearing more toxic than the gas phase. Toxicity of smoke gas phase is also ascertained by morphologic cell changes in electron microscopy and by a decrease in cell bactericidal activity. The large variation in AM susceptibility is not related to cell content in superoxide dismutase but seems to be in good correlation with AM glutathione content, especially when cells are cultured with N-acetylcysteine. However, the protective glutathione action is not total and seems less important than the one observed with a low concentration of NO2 (0.2 ppm/24 hours). PMID- 3862612 TI - Eglin c, a pharmacologically active elastase inhibitor. AB - Eglin c is an elastase/cathepsin G inhibitor from leech Hirudo medicinalis. The gene for this 70 aminoacid peptide was synthesized chemically, cloned and expressed by E. coli. Here we report biochemical and pharmacological studies. The rate of complex formation between Eglin c and human leukocyte elastase (HLE) or human cathepsin G (H. Cat. G) was determined and compared to those of a number of other proteinase/proteinase-inhibitor interactions (alpha 1 PI and alpha 2M). The association rate constants of Eglin c with the leukocyte enzymes are of the same order of magnitude as those with the naturally occurring inhibitors alpha 1 PI and alpha 2M. The association rate constant of Eglin c (extracted from leech) and Eglin c (biotechnology product) with HLE was found to be identical. The equilibrium constants Ki of the Eglin c/HLE and the Eglin c/H. Cat. G interactions are in the order of 10(-10) M. In an experiment with the hamster emphysema model, 0.5 mg or 2 mg of Eglin c applied intratracheally one hour before an HLE-insult completely protected the animals against emphysema and no signs of toxicity due to Eglin c were observed. PMID- 3862614 TI - Mechanisms of tobacco smoke toxicity on pulmonary macrophage cells. AB - The enhanced morbidity from nonspecific respiratory infections found in smokers may be attributable to chemically-induced defects in the respiratory tract defense mechanisms that are organized around the alveolar macrophage. We have isolated by filtration and gas chromatography several cytotoxic components and single chemicals of the vapor phase of tobacco smoke and studied their cytotoxic effects on pulmonary alveolar macrophages. The filtered gas phase of cigarette smoke or acrolein suppresses phagocytic uptake and intracellular digestion of staphylococci when exposed in vitro; produces marked morphologic changes in the cytoplasmic membrane; inhibits cellular adhesion; disturbs glycolysis and arachidonic metabolism; inhibits calcium and magnesium ATPase, glyceraldehyde 3 phosphate dehydrogenase, and probably endoperoxide E-isomerase, but not sodium and potassium ATPase, glucose 6-phosphate dehydrogenase or lactic dehydrogenase in a dose-response fashion. Furthermore, in vivo studies show that acrolein exposure suppresses antibacterial defenses of the lung. These cellular deficiencies may be responsible for a significant component of altered host resistance in smokers who suffer increased morbidity from nonspecific respiratory infections. PMID- 3862615 TI - Discussion on smoke and mucociliary transport. AB - While the acute cilio-inhibitory action of tobacco smoke is no longer to be proved, the relative importance of the various components involved in such an effect still remains a subject for discussion. We have tried to determine the relative part played by the main compounds of the gaseous and particulate phases taking into account, on the one hand, the dilution factor occurring in the smoker during inhalation, and, on the other hand, the reversibility of the phenomena. Moreover, we have tried to specify the effect of the ciliary inhibition on the mucus rate of transport. Finally, among the possible mechanisms of action, we have examined the influence of the blockage of sulfhydryl groups in the cilio inhibition induced by tobacco smoke. PMID- 3862616 TI - The inhibitory effect of tobacco smoke compound on ciliary activity. AB - The embryo chicken trachea was used as an in vitro model to study the ciliotoxicity of the volatile part of the particulate phase of cigarette smoke condensate (CSC). We also report on the ciliotoxicity of 11 phenols belonging to the semi-volatile fraction. The particulate phase of CSC was divided into a semi volatile (SV) and a non-volatile (NV) fraction. The toxicity of CSC, SV and NV was approximately the same, giving ciliostasis within 21-28 minutes at a concentration of 1 mg/ml. The SV-fraction, constituting 12 percent of the particulate phase, was further divided into 4 subfractions: acids, phenols, bases and neutrals. The neutral fraction was significantly (p less than 0.001) more toxic than any of the other fractions, giving ciliostasis after 17 minutes at a concentration of 1 mg/ml. Least toxic was the basic fraction, mainly consisting of nicotine. At a concentration of 3 mg/ml, the mean value for ciliostasis was 64 minutes. From the investigation of phenols it was found that alkylated phenols were more ciliotoxic than phenol. The toxicity was enhanced with increasing chain length of the substituent, i.e. with increasing lipophilicity. PMID- 3862617 TI - Mucociliary clearance and airways obstruction in smokers, ex-smokers and normal subjects who never smoked. AB - On 17 ex-smokers (7 without chronic bronchitis, 10 with chronic bronchitis) and 48 smokers (13 without chronic bronchitis, 35 with chronic bronchitis) we analyzed the correlation between smoking habits (pack years, smoking and ex smoking time), mucociliary clearance rate (mC) and airways obstruction. The mC was measured with 99mTc tagged monodisperse erythrocytes. The static and dynamic lung volumes, the maximal expiratory flow volume curve and the airway resistance were measured by whole body plethysmography. The ex-smokers without chronic bronchitis showed the same mucociliary clearance rate (t-mC in 1 h = 38.3 +/- 10.3%) as the 80 control subjects who never smoked (t-mC in 1 h = 36.9 +/- 12.6%). But the subjects who never smoked showed less airway obstruction. The mucociliary clearance rate in normal subjects who never smoked is a function of age: t-mC in 1 h = -0.37 X age + 53; c-mC in 1 h = -0.45 X age + 73; p-mC in 1 h = -0.25 X age + 38. The smokers without chronic bronchitis showed normal ventilatory function tests but a lower mC rate (t-mC in 1 h = 27.8 +/- 12.3%) than the healthy ex-smokers and the control subjects who never smoked (p less than 0.01). The ex-smokers and smokers with chronic bronchitis had a lower mC rate (t-mC in 1 h = 21.2 +/- 11.3% and 18.1 +/- 9.1) and more airway obstruction (p less than 0.001) than the subjects who did not report any symptoms of chronic bronchitis. The ex-smokers with persistent symptoms of chronic bronchitis showed the severest degree of airways obstruction. The smokers with chronic bronchitis showed the most delayed central mC (c-mC) rate, but less airway obstruction than the ex-smokers with persistent symptoms of chronic bronchitis. The smoking habits (pack years) correlated with the decreased mC rate (p less than 0.01) and the degree of airways obstruction (p less than 0.001). PMID- 3862618 TI - Eating disorders in women. PMID- 3862619 TI - [Artificial respiration machine for small laboratory animals]. PMID- 3862620 TI - Activity of delta(5)3beta-hydroxysteroid dehydrogenase and steroid hormones content in early preimplantation horse embryos. AB - The activity of delta (5)3 beta-hydroxysteroid dehydrogenase was examined histochemically in 6 to 10 days aged horse blastocysts. A positive reaction was noted in the blastomeres of all embryos incubated in medium with substrate. Measurable amounts of progesterone, androgens and estrogens were found in blastocysts on day 8th. The presence of enzyme and hormones suggests that steroid hormone production takes place in very early preimplantation horse embryos. PMID- 3862621 TI - [Color and esthetics. A secret of trace factors]. PMID- 3862622 TI - [Working with the color-layer liquid. The color is already visible before baking]. PMID- 3862623 TI - [New way of contact-free temperature determination]. PMID- 3862624 TI - [Teaching dental technicians. Morphology of the teeth. 27/1: Functional occlusion]. PMID- 3862625 TI - The radiology of trauma. PMID- 3862626 TI - The radiology of inflammation of the jaws. PMID- 3862627 TI - Theory of pantomographic imaging, normal radiographic anatomy, and developmental abnormality interpretation. PMID- 3862628 TI - The radiology of benign and malignant lesions. PMID- 3862629 TI - In situ ultrastructural demonstration of cells bearing Ia antigens in the murine pancreas. AB - Although an important role has been postulated for class II major histocompatibility gene products in the rejection of transplanted islets, the identity of the cells bearing these molecules within pancreatic tissue has been the topic of some controversy. To clearly define the cell population(s) within the murine pancreas that express Ia antigens, perfused murine pancreata were processed for the ultrastructural in situ demonstration of Ia antigens. It was found that Ia antigen expression was restricted to mononuclear cells adjacent to capillaries throughout the exocrine and endocrine portions of the pancreas. Vascular endothelium and ductular epithelium did not express detectable amounts of Ia antigens. PMID- 3862630 TI - [Construction of a genetic map of the chromosome of Vibrio cholerae based on conjugational crossings]. AB - The results of cholera vibrio chromosomal mapping using Vibrio cholerae classica and V. cholerae eltor donor strains obtained with the help of various R. plasmids, are summarized in the paper. A genetic map of V. cholerae chromosome was established showing the order of 35 gene markers. The relationship between the genetic structures of cholera eltor and classical vibrio biotypes is discussed. PMID- 3862631 TI - [Dust load of respiratory organs in miners working in breakage faces of coal mines]. PMID- 3862632 TI - Changes in the white blood picture during experimental larval ascariasis, toxocariasis and toxascariasis. AB - Haematological changes were studied in rabbits experimentally infected with different doses of Ascaris suum, Toxacara canis and Toxascaris leonina. The numbers of leucocytes, eosinophiles and neutrophiles were changed and the strongest eosinophila was observed between the 2nd and 3rd week of infection (5.2 7.1%). The intensity of reaction was not related to the used infection dose. The eosinophilia was always lower in toxocariasis and toxascariasis than in ascariasis at identical doses of infective material. Repeated infections resulted in an increase eosinophilia. PMID- 3862634 TI - [Physiologic and pathologic variants of the mandible in form, position and size]. PMID- 3862633 TI - [Form changes of the mandible by therapy and growth in skeletal retrognathism and dentoalveolar class II,1]. PMID- 3862635 TI - [Representation of the facial soft tissue surface in 3 dimensions with special reference to the mandible]. PMID- 3862636 TI - [New Holdaway analysis in anatomically correct occlusion]. PMID- 3862637 TI - [Biomechanical studies on the movement of the mandible in headgear activator treatment]. PMID- 3862638 TI - [Surgical possibilities for changes in the form of the mandible]. PMID- 3862639 TI - [Studies on therapeutic effect of 13-cis retinoic acid and squalene on symptoms of PCDFs poisoning in monkeys]. PMID- 3862640 TI - Characterization of myeloid leukemias with monoclonal antibodies 3C5 and MY9. AB - The expression of two membrane antigens identified by the monoclonal antibodies (McAb) My9 and 3C5 has been investigated in cells from 80 acute leukemias. My9 was positive in the blasts of 33 out of the 38 (87 per cent) cases of acute myeloid leukemia (AML) tested, regardless of FAB subtype, and in 13 of 18 (72 per cent) cases of chronic granulocytic leukemia (CGL) in myeloid blast crisis. The reactivity of 3C5 was confined to myeloblastic (M1) AML, 85 per cent of cases, and to lymphoblastic leukemia (ALL) of B-lineage, 70 per cent of cases, including CGL in lymphoid transformation. My9 was negative in ALL except for an unusual case. The phenotype My9+, 3C5+ was seen exclusively in M1 (69 per cent) and M2 (14 per cent) AML. Ultrastructural analysis with the immunogold method in combination with the myeloperoxidase (MPO) reaction showed that expression of My9 increased in parallel with MPO activity whereas 3C5 was expressed mainly in myeloblasts with little MPO content. We conclude that the use of these two McAb will contribute to the diagnosis and classification of AML and may throw some light to the pathogenesis of biphenotypic acute leukemias, including TdT + AML. PMID- 3862642 TI - JCAH explains new rehab revisions effective in '86. PMID- 3862641 TI - Adolescent and adult lymphoblastic leukaemia: prognostic factors and response to treatment. AB - Thirty consecutive patients with acute lymphoblastic leukaemia (ALL) who received treatment at Christchurch Hospital between 1972 and 1982 were reviewed. Complete remission (CR) was achieved in 80 per cent with a median survival of 65 weeks. Eleven of 30 patients had one or more of the following features--B cell ALL, a mediastinal mass, the Philadelphia chromosome (Ph1) and age 60 years or older at diagnosis. Although CR was obtained in 8 of these patients none survived three years. The remaining 19 patients were regarded as 'good risk' and treated by moderate intensity chemotherapy schedules. CR was obtained in 16 of these patients (84 per cent) and the estimated 5 year survival was 62 per cent with 6 patients remaining in remission from 5 to 9 years from diagnosis. These results demonstrate the value of objective and reproducible clinical and laboratory findings in defining a subset of ALL patients which may not require high intensity chemotherapy schedules. PMID- 3862643 TI - Bronchial extramedullary hematopoiesis preceding chronic myelogenous leukemia. AB - Extramedullary hematopoiesis of the bronchus is rare. The case of a 72-year-old man in whom the right lower lobe bronchus was obstructed by extramedullary hematopoiesis is presented. Ten months after the initial presentation, Philadelphia chromosome-negative chronic myelogenous leukemia was diagnosed. Such findings have not been reported previously. The various anatomic locations of extramedullary hematopoiesis are reviewed, with an emphasis on intrathoracic and pulmonary presentations. The clinical and pathologic features and the differential diagnosis in the present case are discussed. PMID- 3862644 TI - Genetic drift of marker Y chromosome del(Y)(q12) in Khanty from the lower Ob river. AB - A cytogenetic study of Khanty from the lower Ob river in West Siberia has detected a high frequency of the Y chromosome heterochromatin subtotal deletion- del(Y)(q12). This morphologically identical deletion was found in 32 of 154 males examined (20.8%). The carriers had 10 different surnames. Taking into account the small size, isolation by distance, and historical peculiarities of the surname formation of the population, it has been concluded that the high frequency of the del(Y)(q12) results from the genetic drift of the marker chromosome. PMID- 3862645 TI - Genes for the 'H' subunit of human ferritin are present on a number of human chromosomes. AB - DNA has been extracted from hamster-human and mouse-human hybrid cell lines, restricted with EcoRI, and hybridised to a probe for the H subunit of human ferritin, pDBR2. Sequences highly homologous to this probe have been found on at least eight human chromosomes: 1, 2, 3, 6p21----6cen, 11, 14, 20, and Xq23-25--- Xqter. Only the gene on chromosome 11 appears to be expressed in these hybrids. PMID- 3862646 TI - Androgenetic origin of African complete hydatidiform moles demonstrated by HLA markers. AB - The polymorphism of HLA antigens was used as a marker to investigate the genetic origin of hydatidiform moles in Senegal. An androgenetic etiology was demonstrated. When both parents shared HLA antigens a preferential inheritance in the mole of the shared specificities was observed. This relative compatibility of the molar conceptus with the mother may be an element of the process that prevents its early rejection. PMID- 3862647 TI - HLA antigens and other genetic markers in the Mapuche Indians of Argentina. AB - A total of 107 Mapuche Indians living in western Argentina were studied with respect to 16 genetic systems. For HLA, there were a few differences in relation to previous studies; and considering the averages observed in 15 other South American tribes, Mapuche Indians showed low values for A2, A9 and C3, but high ones for A28 and B16. This is the first report of the presence (in low frequencies, 1-6%) of alleles C2, C6 and C7, as well as of DR antigens (most frequent alleles DR4 and DR2) in South American Indians. Some peculiar reactions shown by products of locus B suggest the presence of antigens that are characteristic of the Mapuche. As for the other systems, the frequencies of R1 (Rh) and PGM1(1) were lower but those for r (Rh), GLO1 and Hp1 were higher than the averages obtained considering previous studies of this ethnic group. Other salient findings were the variability observed in the PGM2 and C3 systems, and the low prevalence of Bfs. PMID- 3862648 TI - [The HLA system and psoriasis: a family study]. PMID- 3862649 TI - [Anthropology of the nose]. PMID- 3862650 TI - [Anatomical study of the external nose]. PMID- 3862651 TI - [Possibilities of cosmetic surgery in the nasal region]. PMID- 3862652 TI - [Autotransplantation of the premolar germs. Results]. PMID- 3862653 TI - [The nose and the development of the soft tissue profile]. PMID- 3862654 TI - Acute myelomonocytic leukemia cutis presenting as a conjunctival lesion. PMID- 3862655 TI - Optimum TMJ condyle position in clinical practice. PMID- 3862656 TI - Theoretical considerations for optimizing intensity differences between primary musculoskeletal tumors and normal tissue with spin-echo magnetic resonance imaging. AB - In the radiographic assessment of primary musculoskeletal tumors, it is important for therapy planning to accurately define the extent of a tumor. Using a double spin-echo pulse sequence, the T1 and T2 relaxation times and relative hydrogen densities of several neoplastic tissues and of several normal tissues in four patients were measured. Neoplasms measured included one fibrosarcoma, two osteosarcomas, and one giant cell tumor. Normal tissues measured included normal muscle, fat, and bone marrow. Using a mathematical model of the double spin-echo pulse sequence, the intensity difference between each tumor and each normal tissue for multiple values of TR and TE was calculated. These calculated intensity differences were then used to plot isodifference contour curves for each tissue pair. These plots enabled us to pick combinations of TR and TE that optimized the signal difference between tumor and normal tissue. When comparing tumor with predominantly fatty tissue such as marrow or subcutaneous fat, optimal signal difference in our imager occurred at a TR of 600 to 800 msec and a very short TE. When comparing tumor with muscle, optimal signal difference occurred with very long TR times, and TE times ranging from 30 to 90 msec. These preliminary results suggest that an optimal scanning protocol for primary musculoskeletal tumors should contain at least two different pulse sequences with widely separated TR values (500 and 2000 msec in our instrument), and short to intermediate values of TE (28 and 56 msec in our instrument). It is believed that analysis of isodifference contour plots is a useful method for optimizing intensity differences between any two tissue types. PMID- 3862657 TI - Comparative uptake of 67Ga and 99mTc MDP in rabbits with a benign noninfected bone lesion (fracture). AB - Mid-shaft fractures of the radius and ulna were produced in 3 to 4 kg New Zealand white rabbits and quantitative uptake of 99mTc MDP and 67Ga determined at 11, 18, 25, 32, 51, and 78 days following fracture. Two hundred microCi of 67Ga was administered 24 hours prior to sacrifice and 1.5 mCi 99mTc MDP 2 hours prior to sacrifice. Specific activity ratios (SARs) were determined between fracture and control sides for bone, muscle and skin. SARs for bone were surprisingly similar for 99mTc MDP and 67Ga, reaching peak values of 6.07 +/- 0.64 (99mTc 18 days); 6.58 +/- 0.90 (67Ga 32 days), subsequently decreasing to minimum values at 78 days postfracture (99mTc MDP 2.25 +/- 0.14; 67Ga 2.18 +/- 0.08). There was no statistically significant difference in SAR for 99mTc MDP vs. 67Ga in bone at any time after fracture. Whole sections of limb were resected on selected animals and activity ratios determined for these sections as a function of the contribution of activity from the various tissues in the volume of interest. Total activity ratios of 67Ga were lower than bone SARs as a result of the contribution of activity from muscle and skin. Thus the apparent lower activity ratios noted on 67Ga images compared with 99mTc MDP images in this fracture model were not due to differences in bone SARs but rather due to the higher soft tissue background activity contribution in the 67Ga images. PMID- 3862658 TI - Isolation and chemical structure of aklanonic acid, an early intermediate in the biosynthesis of anthracyclines. AB - The fermentation, isolation and structure elucidation of aklanonic acid are described. The compound was isolated from fermentations of Streptomyces strain ZIMET 43,717. Aklanonic acid is a yellow-orange crystalline substance, melting at 203-204 degrees C (dec), having the molecular formula C21H16O8, and possessing UV maxima at 258, 282 (sh) and 438 nm (CHCl3). In dimethyl sulfoxide or pyridine aklanonic acid is unstable and a new compound (aklanone) is formed as a conversion product. The elucidation of the structures has shown that aklanonic acid and aklanone are derivatives of 1,8-dihydroxyanthraquinone. PMID- 3862659 TI - The in-vitro activity of EN 272, a quinolone-7-carboxylic acid, in comparison with other quinolones. AB - The in-vitro activity of EN 272, a quinolone-7-carboxylic acid was determined and compared with that of enoxacin, ofloxacin, norfloxacin, ampicillin, cephalexin and trimethoprim. EN 272 inhibited the majority of the Enterobacteriaceae at concentrations of less than or equal to 1.6 mg/l. EN 272 was four- to 32-fold less active than the other new quinolones, but it inhibited organisms resistant to nalidixic acid, ampicillin and cephalexin. EN 272 had poor activity against Pseudomonas aeruginosa and streptococcal species, but it did inhibit most staphylococci at less than or equal to 6.3 mg/l. EN 272 was less active at pH 5.5 and in urine as are other quinolones. PMID- 3862660 TI - The activity of imipenem on Legionella pneumophila, with a note on the treatment of two cases. AB - An in-vitro assessment of the activity of imipenem, a new carbapenem beta-lactam antibiotic, was undertaken on isolates of Legionella pneumophila. The minimum inhibitory concentrations of imipenem were in the range 0.03 to 0.25 mg/l and turbidimetric studies showed that imipenem had a marked bactericidal effect which was more pronounced than that seen with either rifampicin or erythromycin. Two patients with legionella pneumonia were successfully treated with imipenem as part of a clinical trial of the drug. PMID- 3862661 TI - Early mouse embryos produce and release factors with transforming growth factor activity. AB - Previous studies have shown that extracts from mouse embryos at mid and late stages of development contain factors that exhibit transforming growth factor activity. The work reported here demonstrates that cultured mouse embryos at significantly earlier stages of development produce and release factors that exhibit the characteristic property of transforming growth factors. Specifically, the data demonstrate that embryos cultured from the blastocyst stage in serum containing medium or in serum-free medium release factors that promote the anchorage-independent growth of normal rat kidney fibroblasts. It is shown that these factors are produced and released by cells derived from the inner cell mass and by trophoblasts. The precise developmental stage when production of these factors first begins has not been determined but our findings suggest that these factors are produced by cell types associated with early postimplantation embryos. PMID- 3862662 TI - Serum cholesterol binding reserve (SCBR)--a protective factor in ischemic heart disease. PMID- 3862663 TI - Chronic myeloid leukemia blast crisis presenting with meningeal leukemia. PMID- 3862664 TI - Diffuse pulmonary infiltrates associated with subacute myelomonocytic leukemia. PMID- 3862665 TI - Modification of a ribonuclease from Rhizopus sp. with 1-cyclohexyl-3-(2 morpholinyl-(4)-ethyl)carbodiimide p-toluenesulfonate. AB - The carboxyl group in a ribonuclease from Rhizopus sp. (RNase Rh) was modified by a water-soluble carbodiimide, 1-cyclohexyl-3-(2-morpholinyl-(4) ethyl)carbodiimide p-toluenesulfonate (CMC). From the relation between the extent of modification and the enzymatic activity, it was concluded that at least the modification of two carboxyl groups seemed to induce the loss in enzymatic activity. In the presence of 1 M cytidine, RNase Rh activity was protected from the CMC-modification. Under conditions in which the enzyme was inactivated to 20% activity, about 70% of the enzymatic activity was retained in the presence of cytidine. The inactivation of the RNase Rh pre-treated with CMC in the presence of cytidine with [14C]CMC indicated that the RNase Rh lost its enzymatic activity with the incorporation of about one [14C]CMC. Therefore, it could be concluded that one carboxyl group is involved in the active site of RNase Rh. The binding of the CMC-modified RNase Rh with 2'-AMP was studied spectrophotometrically. The affinity of the modified RNase Rh towards 2'-AMP decreased markedly upon CMC modification. PMID- 3862667 TI - Absolute rates of globin gene transcription and mRNA formation during differentiation of cultured mouse erythroleukemia cells. AB - We have compared the rates of alpha- and beta-globin gene transcription with the rates of mature globin mRNA appearance in the cytoplasm during the course of chemically induced differentiation of mouse erythroleukemia cells by in vivo pulse-labeling experiments. The absolute rates for both processes were determined by simultaneously measuring incorporation into globin-specific transcripts and into the cellular nucleotide pool. The latter measurements provide a determination of the absolute rate of total RNA synthesis which declines during differentiation. Transcription from the beta major and beta minor globin genes was measured separately by hybridization to cloned DNA sequences from a region of the second intron which is highly divergent in the two genes. The results show that, during dimethyl sulfoxide-stimulated differentiation, transcription of alpha and beta major globin increases 15-25-fold, whereas beta minor globin transcription is not increased. Furthermore, in both undifferentiated and differentiated cells, the absolute rates of globin transcription are about equal to the rate of appearance of mature mRNA transcripts in the cytoplasm, indicating highly efficient processing of nuclear globin transcripts to mature mRNA before and after differentiation. The results indicate that dimethyl sulfoxide-induced accumulation of globin mRNA during differentiation is controlled almost entirely at the transcriptional level. PMID- 3862666 TI - Alteration of aminoacyl-tRNA synthetase activities by phosphorylation with casein kinase I. AB - The phosphorylation of a highly purified aminoacyl-tRNA synthetase complex from rabbit reticulocytes by the cyclic nucleotide-independent protein kinase, casein kinase I, has been examined, and the effects of phosphorylation on the synthetase activities were determined. The synthetase complex, purified as described (Kellermann, O., Tonetti, H., Brevet, A., Mirande, M., Pailliez, J.-P., and Waller, J.-P. (1982) J. Biol. Chem. 257, 11041-11048), contains seven aminoacyl tRNA synthetases and four unidentified proteins and is free of endogenous protein kinase activity. Incubation of the complex with casein kinase I in the presence of ATP results in the phosphorylation of four synthetases, namely, glutamyl-, isoleucyl-, methionyl-, and lysyl-tRNA synthetases. Phosphorylation by casein kinase I alters binding of the aminoacyl-tRNA synthetase complex to tRNA Sepharose. The phosphorylated synthetase complex elutes from tRNA-Sepharose at 190 mM NaCl, while the nonphosphorylated complex elutes at 275 mM NaCl. Phosphorylation by casein kinase I results in a significant inhibition of aminoacylation by the glutamyl-, isoleucyl-, methionyl-, and lysyl-tRNA synthetases; the activities of the nonphosphorylated synthetases remain unchanged. These data indicate that phosphorylation of aminoacyl-tRNA synthetases in the high molecular weight complex alters the activities of these enzymes. One of the unidentified proteins present in the complex (Mr 37,000) is also highly phosphorylated by casein kinase I. From a comparison of the properties and phosphopeptide pattern of this protein with that of casein kinase I, it appears that the Mr 37,000 protein in the synthetase complex is an inactive form of casein kinase I. This observation provides further evidence for a physiological role for casein kinase I in regulating synthetase activities. PMID- 3862668 TI - Induction and desensitization of plasminogen activator gene expression by tumor promoters. AB - Tumor promoting phorbol esters and mezerein strongly induced plasminogen activator (urokinase, uPA) synthesis in porcine kidney cell cultures (LLC-PK1). Induction was due to increased uPA-mRNA levels which rose from 10 to 300 molecules/cell within 2 h of exposure to 16 nM phorbol myristate acetate. We have compared the action of tumor promoters with that of 8-bromo-cAMP, another potent inducer of uPA; the similarities between the two kinds of induction were: both involved transcriptional activation of the uPA gene; both were rapid in onset, changes in transcription rate being detectable within 10-20 min; the initial rates of transcription and uPA-mRNA accumulation were substantial and in the same order of magnitude; neither class of inducer required protein synthesis to stimulate uPA transcription. The main contrast between the two types of agents was that the uPA response to tumor promoters was transient whereas that to cAMP compounds was sustained: cultures rapidly lost their response to tumor promoters within 2 h after initial exposure while retaining responsiveness to cAMP-related agents. The cells developed a specific drug-induced desensitization which was slowly reversed after tumor promoters were removed from the culture medium. Since protein kinase C is now well established as the receptor for phorbol-derived and several other tumor promoters it will be of interest to determine whether desensitization occurs at the level of receptor. PMID- 3862669 TI - Amiloride in differentiation and commitment of Friend erythroleukemia cells. AB - Dimethylsulfoxide (DMSO) converts almost all of the undifferentiated murine erythroleukemia cells (MEL or Friend cells, clone 745A) in a culture to differentiated cells that contain high levels of hemoglobin and that stop growing after a limited number of cell divisions. Contrary to other reports--that amiloride strongly inhibits DMSO-induced differentiation in MEL cells--in this laboratory, inhibition by amiloride, tested with DMSO over a range of concentrations in two kinds of media and at various cell densities, was found to be only weak or absent. Similarly, amiloride did not inhibit induction by N,N' hexamethylene bis-acetamide (HMBA). As expected from previous findings with other cell systems, amiloride inhibited protein synthesis and cell multiplication. PMID- 3862670 TI - Steroid sulfatase activity in amnion tissue and amnion cells maintained in monolayer culture. AB - Phenolic steroid sulfatase activity in amnion tissue, amnion homogenate, subcellular fractions, and amnion epithelial cells in culture was demonstrated with radiolabeled estrone sulfate as the substrate. Sulfatase activity could not be detected in either amnion tissue or cells when evaluated with dehydroisoandrosterone sulfate as the substrate. Phenolic steroid sulfatase activity in amnion tissue was linear with incubation time up to 3 h and with amnion tissue weight up to 800 mg/ml. The rate of estrone sulfate hydrolysis in amnion tissue increased in a linear manner with temperature from 3 to 60 C. The apparent Km of amnion tissue sulfatase for estrone sulfate was 9 microM. The highest specific activity of the enzyme was found in both the mitochondrial lysosomal and microsomal fractions. In studies with amnion epithelial cells in monolayer culture, phenolic steroid sulfatase activity was linear with incubation time up to 4 h and with cell number up to 2 X 10(5)/ml. The apparent Km of amnion cell sulfatase for estrone sulfate was 5.5 microM. The product of hydrolysis, i.e. estrone, was metabolized in situ to 17 beta-estradiol in both amnion tissue and cells. The hydrolysis of estrone sulfate (and possibly other phenolic steroid sulfates present in amniotic fluid) by amnion cells may be important in providing biologically potent estrogens for in situ action. PMID- 3862671 TI - Invisible retainers. PMID- 3862672 TI - Positive intermaxillary pressure appliance. PMID- 3862673 TI - The lateral pterygoid muscle: fact and fiction. PMID- 3862674 TI - Archwire engagement on posterior fixed bridges. PMID- 3862675 TI - Indirect band for fixed bridgework. PMID- 3862676 TI - Relaxation of elastomeric chains. PMID- 3862677 TI - Safeguarding against collection problems. PMID- 3862678 TI - Convulsions and encephalopathy in a patient with leukemia after treatment with metronidazole. PMID- 3862679 TI - Enzyme markers in acute non-lymphoid leukaemia. PMID- 3862680 TI - Monoamine oxidase inhibitor therapy for anorexia nervosa and bulimia: a preliminary trial of isocarboxazid. AB - In an open prospective clinical study, 14 female outpatients with anorexia nervosa or bulimia completed a 6-week trial of isocarboxazid, with a mean dose of 34 mg. The eight bulimic and six restrictive anorexic subjects did not show any significant differences in medication response. Ratings of depression and anxiety showed significant improvement after the fourth week. Significant improvement in eating behavior, as measured by the number of meals missed per day, was noted. For the bulimic subgroup, bingeing and vomiting showed a nonsignificant reduction, while the urge to binge was significantly reduced. There was no significant weight change in either group during the study, although the restrictive group had gained substantially at 6-month follow-up. PMID- 3862681 TI - Variation among fluoride concentrations of water from domestic wells in a four county area. AB - Water samples from domestic wells in a four-county area of New Mexico were analyzed for fluoride over a twenty-four month period, using a specific ion electrode. Of the 503 nonrandomly selected samples analyzed, 33 (6.6 percent) had less than 0.3 ppm, 372 (73.9 percent) had between 0.3 and 0.7 ppm and 98 (19.5 percent) had greater than 0.7 ppm of fluoride. The Council on Dental Therapeutics of the American Dental Association considers fluoride concentrations of greater than 0.7 ppm to be acceptable caries preventive levels in drinking water. Variation in fluoride concentration was found at all well depth intervals considered. It is important for dentists, physicians and nurse practitioners to be aware of the potential for variation of fluoride concentrations among domestic wells. When assessing a child's fluoride needs, the fluoride concentration of his or her drinking water must be known in order to optimize the benefits of fluoride supplements and to minimize the risk of enamel fluorosis. The fluoride level of community water systems is generally known by a town's water or health department. Water from domestic wells, however, must be assayed for fluoride on an individual basis to make the determination. PMID- 3862682 TI - Patient assessment of the value of bleaching tetracycline-stained teeth. AB - The use of tetracycline drugs in young children can cause discoloration of bone and dental hard tissues. Results show that more than half of patients treated were satisfied with their tooth color after bleaching. PMID- 3862683 TI - Idiopathic external root resorption of the entire permanent dentition: report of case. AB - A puzzling case is presented, in which no known etiology existed for a progressively worsening idiopathic external root resorption throughout the entire dentition. Parents of the patient did not pursue the option of pulp extirpation and calcium hydroxide treatment as a possible means of arresting the condition. PMID- 3862684 TI - Assessing chloral hydrate dosage for young children. AB - Results of this study demonstrate that a dose of 75 mg/kg of chloral hydrate supplemented by nitrous oxide is superior to the dose of 50 mg/kg, for behavior management of young children sedated for dental treatment. PMID- 3862685 TI - Clinical management of multiple maxillary anterior supernumerary teeth: report of case. AB - Supernumerary teeth in the maxillary midline can present both esthetic and pathologic concerns that can be difficult to solve. The frequency with which supernumerary teeth occur justifies an oral radiographic survey for preschool children as early detection is most important, if such complications are to be avoided or minimized. The case presented in this report required both surgical and innovative orthodontic therapy to bring an unerupted, impacted maxillary central incisor into proper alignment. The tooth was moved into the dental arch and injury to the root structure and surrounding oral tissues was avoided by using a combination of conservative surgical and orthodontic therapy. PMID- 3862686 TI - A simplified treatment for correcting an ectopically erupting maxillary first permanent molar. AB - The tooth most commonly involved in ectopic eruption is the maxillary first permanent molar. Treatment for this aberration of development is described, including a technique using a bonded button to engage the free end of the wire. Use of the appliance was successful. PMID- 3862687 TI - Mandibular buccal infected cyst in a six-year-old girl: report of case. AB - Characteristics of a mandibular infected cyst are unique, including: the young age of the patient; involvement of a caries-free, vital mandibular molar; buccal periostitis; and radiographic preservation of the continuity of the apical lamina dura. Histologic findings in this case confirmed the diagnosis. PMID- 3862688 TI - The use of whole cow's milk in infancy. Committee on Nutrition. American Academy of Pediatrics. PMID- 3862689 TI - Introducing gerodontology to students in Denmark. PMID- 3862690 TI - The incidence of 'hypersensitive' teeth in the West of Scotland. PMID- 3862691 TI - Kinetic studies on zinc phosphate dental cement: measurement of the electric conductance of cement during setting. PMID- 3862692 TI - Chemical disinfectants. PMID- 3862693 TI - Antibiotic schedules. PMID- 3862694 TI - Forced eruption in the treatment of transverse root fractures. AB - A relatively new method for treating transverse root fractures near the gingival crevice is reviewed. Two cases are described in which the fractured teeth are orthodontically erupted to facilitate restoration. A periodontal pocket was reduced in the first case, and the technique was modified to accommodate a patient wearing a partial denture in the second case. The technique appears to be a favorable alternative to extraction or periodontal surgery. PMID- 3862695 TI - Complications after mandibular third molar surgery: a statistical analysis of 500 consecutive procedures in private practice. PMID- 3862696 TI - Seizure-related oral lacerations: incidence and distribution. PMID- 3862697 TI - Combined orthodontic and restorative treatment of malformed premolars. AB - This case of small malformed maxillary second premolars was treated without loss of teeth, without apparent compromise of periodontal health, and without major compromise of occlusion. A combination of orthodontic positioning of the teeth and recontouring with restorative dental treatment produced an expedient result that was esthetically pleasing as well as functional, biologically acceptable, and stable. PMID- 3862698 TI - Pilocarpine used to stimulate normal saliva production. PMID- 3862700 TI - Accredited dental schools. Commission on dental accreditation. PMID- 3862699 TI - 1985 National Children's Dental Health Month. Bureau of Health Education and Audiovisual Services. PMID- 3862701 TI - Caries potential evaluated. PMID- 3862702 TI - Sounds of TMJ. PMID- 3862703 TI - Third-party payment systems: reflections and forecasts. PMID- 3862704 TI - The dentist-patient relationship: perceptions by patients of dentist behavior in relation to satisfaction and anxiety. AB - This study relates perceived dentist behaviors to anxiety in patients during treatment and to satisfaction during the dental visit. The sample consisted of 231 adult patients, 107 men and 124 women, at a public hospital dental clinic. Immediately after treatment, patients were asked to respond to a list of 21 dentist behaviors thought to be associated with positive dentist-patient interaction. Criterion measures obtained were ratings of anxiety by patients during treatment and measures from the DVSS. None of the dentist behaviors was related to anxiety in patients in a way that would suggest that dentist behavior either reduced or increased anxiety. DAS scores obtained before treatment were the best predictor of anxiety in patients during treatment. Most of the dentist behaviors were significantly related to satisfaction in patients. Stepwise multiple regression analyses using DVSS scores as criterion variables indicated that those variables contributing most to satisfaction in patients were indicative of dentist communication that was accepting and caring. Anxiety in patients during treatment also was an important negative predictor of satisfaction. The results indicate that the dentist behaviors explored in this study were associated with satisfaction in patients, but were not clearly related to anxiety reduction. PMID- 3862705 TI - Ectopic eruption of the maxillary permanent first molar: the effect of increased mesial angulation on arch length. AB - Fifty-four cases of ectopically erupted maxillary permanent first molars were studied with a method using the measurements obtained from photographs of the study casts. The amount of relative loss of anteroposterior arch length of the right and left sides was shown to correlate with the increased mesial angulation of the maxillary permanent first molar. The bilateral ectopic group has a significantly larger mesial angulation of the permanent first molar on a maxilla with shorter anteroposterior arch length. The relative loss of arch length with ectopic eruption of the permanent first molar limits the use of unilateral appliances for treatment. The use of an appliance with bilateral arch support seems preferable. PMID- 3862706 TI - Taurodontism: review of literature and report of case. AB - In the foregoing case, the finding of a taurodont dentition led to further investigatory tests. The finding of Barr bodies in the buccal scrapings was insufficient to prove that the patient had Klinefelter's syndrome. The diagnosis of Klinefelter's syndrome was made, however, after a chromosomal analysis of the patient's peripheral blood samples showed a 47 XXY chromosome complement in all of the examined cells. The patient's underlying aneuploid condition was disclosed because of the radiographic study done during the dental examination. The dental practitioner should be familiar with taurodontism because its discovery may help to disclose conditions that would otherwise remain unnoticed. PMID- 3862707 TI - Cherubism: report of a nonfamilial case. AB - A case of nonfamilial cherubism and a review of literature have been reported. A diagnosis of cherubism was based on clinical and histopathologic examinations. PMID- 3862708 TI - Prevention, management, and documentation of swallowed dental objects. PMID- 3862709 TI - Expansile radiolucent mass in the maxilla. AB - The adenomatoid odontogenic tumor is an uncommon, extremely benign odontogenic lesion that should be differentiated from the other osseous lesions. The surgical management should be conservative without expectation of recurrence. PMID- 3862710 TI - Geriatric sweet tooth. A problem with tricyclics. AB - Ninety-three consecutive outpatients receiving tricyclic antidepressants for at least one month were asked about medication side effects, including excessive appetite and craving for sweets. Prevalence of these side effects and their relationship (Pearson r) to type of medication, dosage, patient characteristics, diagnoses, weight gain, and clinical improvement were examined. More than one third (38%) reported excessive appetite, 34% had a craving for sweets, and about one-half (48%) had either one or the other of these reactions. These adverse side effects were related significantly to weight gain (P less than .001) and a higher dose of medication, but not to clinical improvement. Clinical improvement was in the moderate-to-good range but was not related to medication dose. Because increasing degrees of overweight can pose serious health risks, especially for the elderly, it is critical for future research to examine ways of maintaining therapeutic benefit while minimizing food craving side effects. Methods of dealing with these issues clinically are suggested. PMID- 3862711 TI - Correlation between keratinocyte expression of Ia and the intensity and duration of contact hypersensitivity responses in mice. AB - Langerhans cells are the only cells within the epidermis that normally express immune response-associated antigens (referred to as Ia in mice and HLA-D in humans). However, in the epidermis of patients with allergic contact dermatitis or individuals undergoing a delayed-type hypersensitivity response, the keratinocytes at the reaction site are induced to express HLA-DR. In this study the inducible expression of Ia by the keratinocytes of mice was found to be directly correlated with the intensity and duration of experimentally induced contact hypersensitivity (CH) responses. During a CH response in animals that were sensitized on the belly and challenged on the ear with the contact sensitizing (CS) agent oxazolone, the keratinocytes in the challenged, but not the unchallenged, ear were induced to express Ia. In comparison with animals that were sensitized and challenged at different sites, an intensified expression of Ia by the keratinocytes was associated with a twofold increase in ear swelling in mice that were sensitized and challenged with oxazolone at the same site. Curiously, the challenge of oxazolone-sensitized ears with dinitrofluorobenzene (an unrelated CS agent), croton oil (a nonspecific inflammatory agent), or acetone/olive oil (a noninflammatory agent) also induced both a marked keratinocyte expression of Ia and an enhanced CH response. These results suggest that residual antigen at the original sensitization site may be mobilized to function as the challenge stimulus to elicit a CH response, in association with keratinocyte expression of Ia, when CS-sensitized skin is perturbed with a nonspecific agent. Further evidence of an association between CH responsiveness and keratinocyte expression of Ia came from the following observations. First, the magnitude and duration of a CH response was markedly increased in pertussis toxin (PT)-treated mice. These enhanced responses were associated with intense Ia expression by the keratinocytes in the epidermis at the reaction site. Because PT is known to have an adjuvant effect on delayed-type hypersensitivity reactions, as well as to alter the normal regulatory mechanisms associated with this type of response, it is possible that Ia+ keratinocytes play a synergistic role in the enhanced CH responses that are observed in PT-treated animals. Second, a direct correlation between keratinocyte expression of Ia and CH responsiveness was observed in athymic nude mice that were challenged with oxazolone after receiving an adoptive transfer of lymphoid cells from oxazolone-primed normal syngeneic donors.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3862712 TI - Implications of the invariant gamma-chain on the intracellular transport of class II histocompatibility antigens. AB - We have examined the role of the invariant gamma-chain on the intracellular transport of human class II histocompatibility antigens. mRNA was selected by hybridization to cDNA corresponding to class II alpha-, beta-, and gamma-chains, and the obtained mRNA fractions were injected individually and in various combinations into X. laevis oocytes. Translation products were isolated after various periods of chase, and their carbohydrate moieties were analyzed to monitor the subcellular localization of polypeptide chains. A mixture of alpha-, beta-, and gamma-chains, or gamma-chains alone, were transported and glycosylated to the same extent as in a B lymphoblastoid cell line. However, although alpha- and beta-chains formed a complex in the absence of the gamma-chain, the transport of this complex was slowed down. Furthermore, the glycosylation of alpha- and beta-chains appeared incomplete. Thus, the invariant gamma-chain seems to play a crucial role for the rate of transport and glycosylation of class II alpha- and beta-chains. PMID- 3862713 TI - Genetic differences between two substrains of NZB mice. AB - We have compared the NZB/B1NJ (/NJ) and NZB/B1Pt (/Pt) mouse substrains with respect to a number of immunological and biochemical polymorphisms. In agreement with earlier findings by other workers, we detected histocompatibility antigen difference(s) between the two substrains. Serological analysis indicated that /NJ and /Pt expressed the same allotypes of H-2, Thy-1 and Lyt-1 antigens, while they differed for the Lyt-2 antigen. Amongst 15 biochemical polymorphisms, which we assayed, /NJ and /Pt differed for four, namely Pep-3, Mup-1, Gpd-1 and Hbb. In addition, the two NZB substrains differed for the Hc marker (haemolytic complement). PMID- 3862714 TI - [A case of acute myeloblastic leukemia with Auer bodies in polymorphonuclear neutrophils]. PMID- 3862715 TI - [In vivo wear of posterior composites and its counterplan before or after insertion]. PMID- 3862716 TI - [Electron microscopic observations on the interrelationship between the processes of ameloblasts and odontoblasts--on porcine amelogenesis]. PMID- 3862717 TI - [Histological investigation on the relation between the initiation of occlusion and bone formation after the implantation of apatite ceramics]. PMID- 3862718 TI - [Histological observations on pulpal and periapical tissue reactions after pulp exposure of developing molars]. PMID- 3862719 TI - [Observations on the structure of the mandibular condyle of the prenatal rabbits]. PMID- 3862720 TI - [Observations on the structure of the resting line and reversal line in the alveolar bone of the human mandible]. PMID- 3862721 TI - [Observation of the structure of dentinal tubules in the superficial layer of human dentin]. PMID- 3862722 TI - [Muscle pressure on the maxillary incisor and labial side of the canine tooth]. PMID- 3862723 TI - [In vitro study of the effects of formocresol on bone absorption]. PMID- 3862724 TI - [Dentin collagen and adhesive strength of resins]. PMID- 3862725 TI - [Structure of the dentin matrix in the superficial layer]. PMID- 3862726 TI - Activation of neutrophils by antigen-induced lymphokine, with emphasis on antibody-independent cytotoxicity. AB - Incubation of bovine neutrophils with antigen-stimulated mononuclear cell supernatant (lymphokine) caused an inhibition of neutrophil migration and an enhancement of the neutrophils' ability to adhere to plastic, reduce nitroblue tetrazolium, ingest Staphylococcus aureus, and mediate antibody-dependent cell mediated cytotoxicity (ADCC) against chicken erythrocytes. Lymphokine-treated neutrophils also became cytotoxic for chicken, turkey and human erythrocytes in the absence of specific antibody but were not cytotoxic for bovine erythrocytes. The increase in antibody-independent neutrophil cytotoxicity (AINC) was not due to direct cytotoxic activity of the lymphokine or to a stable, soluble mediator released by the neutrophils. Enhancement of AINC, but not ADCC, required RNA and protein synthesis by the neutrophil. These results indicate that several aspects of neutrophil function can be altered by products secreted by antigen-stimulated mononuclear cells and that neutrophils can be induced to recognize and to have increased cytotoxic activity toward heterologous erythrocytes. PMID- 3862727 TI - Characterization of human mononuclear cells using reduced pyridine nucleotide fluorescence and flow cytometry. AB - Peripheral blood monocytes undergo an oxidative burst similar to that seen in neutrophils. The basis for this response appears to be an NAD(P)H oxidase that utilizes reduced NAD(P)H to form superoxide anion. We utilized the unique UV stimulated fluorescence property of reduced pyridine nucleotides to analyze NAD(P)H utilization in monocytes. UV-stimulated fluorescence in mononuclear cell preparations indicated two populations of cells with the highly fluorescent cells having a Coulter volume consistent with that of monocytes. Dual laser analysis with monoclonal antibodies confirmed that these highly fluorescent cells are monocytes by showing them to be OKM1+, Leu DR+, and anti-monocyte 0.2+. Natural killer (NK) cells, as defined by Leu 7, were not found in this highly fluorescent population. Stimulation of mononuclear cells with phorbol myristate acetate caused a fluorescence loss indicative of NAD(P)H oxidation in monocytes but not in lymphocytes. Stimulation with suboptimal concentrations of PMA (1-5 ng/ml) resulted in a dose-dependent fluorescence loss in monocytes that occurred in an all-or-none fashion identical to the pattern observed in neutrophils. Simultaneous measurement of H2O2 production using dichlorofluorescein formation with NAD(P)H fluorescence indicates that oxidant production occurs in a graded manner. This method, then, provides a convenient way to study in single cells the metabolic events involved in depletion and replenishment of NAD(P)H during the oxidative burst and demonstrates an additional means by which to distinguish monocytes from lymphocytes using flow cytometry. PMID- 3862728 TI - Reticuloendothelial-depressing substance: studies on the mechanism of action. AB - This study was carried out to evaluate the mechanism of action of a reticuloendothelial (RE)-depressing substance. This RE-depressing substance was obtained from the plasma of dogs subjected to 3 hr of intestinal ischemia. RE depressing substance was partially purified by dialysis and reverse-phase column chromatography. The assay of RE-depressing activity was based on the depression of the rate of clearance of colloidal carbon from the blood of rats or mice. The effect of RE-depressing substance on three other RE system (RES) test particles (gelatinized lipid emulsion, formalinized sheep erythrocytes, and IgM-coated erythrocytes) was determined. RE-depressing substance did not affect the clearance rate or the organ localization of these three test particles. Therefore, RE-depressing substance affected only the clearance of colloidal carbon. Since platelet aggregation has been shown to contribute to the clearance of colloidal carbon, the effect of RE-depressing substance on platelet aggregation was evaluated. RE-depressing substance depressed in vitro platelet aggregation induced by ADP or collagen. It was concluded that the effect of RE depressing substance on the clearance of colloidal carbon was due to a depression of platelet aggregation rather than to a depression of hepatic macrophage phagocytic function. PMID- 3862729 TI - The participation of activated peritoneal macrophages in Treponema pallidum subspecies pertenue infection in Syrian hamsters. AB - The role of cell-mediated immunity in hamsters during treponemal infection appears to involve the activated macrophage. To date, studies have been hindered by the inability to confirm that macrophages exhibit enhanced treponemicidal activity at the infection site. We show that lipopolysaccharide and thioglycollate-treated animals, when inoculated with Treponema pallidum subsp. pertenue, exhibit enhanced clearance of these organisms compared with controls. Macrophages from these infected groups display an enhanced respiratory burst, as detected by NBT reduction, as well as a marked increase in C3b receptor-mediated ingestion activity. Significant changes in these parameters indicate that alterations in macrophage activation are occurring in the infected compartment. Thus the stimulatory agents apparently modify the host's immune responses to promote subsequent reduction of treponemal infection. In addition, hamster peritoneal macrophages demonstrate enhanced activation behavior as a result of exposure to at least two signals, which may be prerequisite for processing this organism efficiently. PMID- 3862730 TI - Enhanced phospholipase A2 and C activities of peripheral blood polymorphonuclear leukocytes from patients with rheumatoid arthritis. AB - Increased concentrations of eicosanoids are found in synovial fluids (SF) from patients with rheumatoid arthritis (RA). SF polymorphonuclear leukocytes (PMN), which derive from peripheral blood, usually account for approximately 90% of the cells in RA SF. Since eicosanoid precursor fatty acids (FA) are liberated by phospholipases from membrane phospholipids, we examined phospholipase A2 and C activities in peripheral blood PMN from patients with RA. Peripheral blood PMN from patients with RA (RA-PMN) exhibit greater phospholipase A2 activities against phosphatidylcholine (PC) and phosphatidylethanolamine (PE), and greater phospholipase C activities against PC, PE, and phosphatidylinositol (PI) than PMN obtained from normal volunteers (N-PMN). PMID- 3862731 TI - Phagocytosis of unopsonized zymosan by human monocyte-derived macrophages: maturation and inhibition by mannan. AB - Human monocyte-derived macrophages phagocytosed zymosan in the absence of serum opsonins. The capacity to ingest zymosan developed after the cells were cultured in vitro for 3 days and was inhibited completely by mannan. We conclude that human monocyte-derived macrophages phagocytose unopsonized zymosan predominantly via mannose receptors. PMID- 3862732 TI - Apolipoprotein changes associated with the plasma lipid-regulating activity of gemfibrozil in cholesterol-fed rats. AB - Gemfibrozil (Lopid) is a new plasma lipid-regulating drug that decreases very low and low density lipoprotein (VLD/LDL) and increases high density lipoprotein (HDL) concentrations in man. The present experiments tested the effects of gemfibrozil on plasma lipoproteins and apolipoproteins in rats fed high fat/high cholesterol diets. Compared to chow-fed rats, cholesterol feeding for 2 weeks (20% olive oil/2% cholesterol) produced the expected increases in VLDL and intermediate density lipoprotein (IDL) while lowering plasma HDL. This was documented by using three methods of lipoprotein isolation: sequential ultracentrifugation, density gradient ultracentrifugation, and agarose gel filtration. Gemfibrozil gavaged at 50 mg/kg per day for 2 weeks during cholesterol feeding prevented these changes such that lipoprotein patterns were similar to those in chow-fed animals. Whole plasma apoE and apoA-I concentrations were decreased and apoB increased due to cholesterol feeding as determined by electroimmunoassay, but again gemfibrozil treatment prevented these diet-induced alterations. Gradient polyacrylamide gel electrophoresis patterns of the total d less than 1.21 g/ml lipoprotein fractions reflected the changes in apolipoprotein concentrations and further demonstrated a greater increase of apoBl compared to apoBh in cholesterol-fed rats. Gemfibrozil lowered the concentration of both apoB variants and prevented the shift of apoE from HDL to lower density lipoproteins. Changes in the distribution of apoE were confirmed using agarose gel column chromatography followed by electroimmunoassay. These methods also revealed a shift of apoA-IV from HDL to the d greater than 1.21 g/ml, lipoprotein-free fraction with gemfibrozil treatment when blood was taken from fasted or postabsorptive animals. Since it was also noted that in chow-fed rats more apoA IV was present in the d greater than 1.21 g/ml fraction in the postabsorptive or fed state compared to fasted animals, it could be postulated that the shift of apoA-IV into this fraction in gemfibrozil-treated rats is related to an accelerated clearance of chylomicrons. It is concluded that gemfibrozil largely prevents the accumulation of abnormal lipoproteins in this model of dyslipoproteinemia, and that apoE may play a critical role in this normalization process. PMID- 3862733 TI - Assessing the potential for televised continuing dental education in the home or office. PMID- 3862734 TI - Facial keloids: an update on dental considerations and new management techniques. PMID- 3862735 TI - Hyperodontia, with emphasis on supernumerary molars and report of an unusual case. PMID- 3862736 TI - Prevalence of root decay in inner city geriatric patients taking anti hypertension medications. PMID- 3862737 TI - Peripheral ossifying fibroma. A case report. PMID- 3862738 TI - Changes in 3 beta-hydroxy- delta 5-steroid dehydrogenase activity in granulosa tissue during the ovulatory cycle of the laying hen (Gallus domesticus). AB - The object of this study was to examine changes in the activity of granulosa 3 beta-hydroxy-delta 5-steroid dehydrogenase during the ovulatory cycle of the domestic fowl. The enzyme activity in granulosa tissue from the largest follicle increased significantly during the period 8-14 h before an expected ovulation. The increase in activity occurs before the preovulatory surge of LH and near the time of lights off. During the 4-8 h period before an ovulation, i.e. the time of maximal plasma LH concentrations, 3 beta-hydroxy-delta 5-steroid dehydrogenase activity decreased in granulosa tissue from the largest follicle. This observation is explained by proposing that the enzyme is inhibited by the large amounts of progesterone found in the tissue at this time. The results indicate that important biochemical changes are taking place within granulosa tissue of the largest ovarian follicle before the preovulatory LH surge. PMID- 3862739 TI - The effectiveness of Gly-Oxide and sodium hypochlorite in preventing smear layer formation. PMID- 3862740 TI - The effectiveness of apical dentin plugs in sealing endodontically treated teeth. PMID- 3862742 TI - Foreign object removal utilizing the Cavi-Endo ultrasonic instrument. PMID- 3862741 TI - Macrophage response and hemolytic activity caused by the powder component of endodontic sealers. PMID- 3862743 TI - Maxillary second molar with two palatal canals and a palatogingival groove. PMID- 3862744 TI - Methylene blue dye: an aid to endodontic surgery. PMID- 3862745 TI - Trans-acting element(s) operating across species barriers positively regulate expression of major histocompatibility complex class II genes. AB - Raji, a human B lymphoma line, expresses high levels of major histocompatibility complex (MHC) class II antigens. Conversely, none of the detectable human Ia antigens is present in RJ 2.2.5, an immunoselected Raji variant. Clonal analysis, biochemical characterization, and nucleic acid hybridization studies of hybrids between mouse spleen cells and RJ 2.2.5 show that MHC class II gene expression is regulated in trans by a factor which, as judged by dominance studies, has the characteristics of an activator. Such a positive trans acting factor is expressed in mouse spleen cells, and is able to implement MHC class II gene expression across species boundaries. Expression of this factor in spleen cells strongly suggests that it plays a role in in vivo regulation of Ia expression. Additional data suggest that different subsets of class II genes such as DR and DQ may, in part, be regulated by different mechanisms. It has also been possible to show that the amount of In chain-specific mRNA, present at reduced levels in RJ 2.2.5 cells compared to the parental Raji cells, drastically increased in human X mouse cells hybrids reexpressing human Ia antigens, suggesting that the In chain gene and the class II genes, although located on different chromosomes, are regulated in a concerted fashion, either directly through the same implementing factor, or indirectly through a cascade mechanism. PMID- 3862746 TI - Human hematopoietic progenitor cells in long-term cultures express HLA-DR antigens and lack HLA-DQ antigens. AB - The expression of HLA-DR antigenic determinants on human hematopoietic progenitor cells (HPC) capable of differentiating into mature blood cells, as determined in semisolid cultures, has been demonstrated previously (3-7). Here, we investigated the expression of class II determinants on HPC responsible for the sustained proliferation of colony-forming units of granulocyte/macrophage (CFU-GM), of multilineage HPC (CFU-GEMM, granulocyte/erythrocyte/macrophage/megakaryocyte), and burst-forming units of erythroid cells (BFU-E) in liquid long-term cultures. Using both fluorescence-activated cell sorting and complement-dependent cytotoxicity assays, HLA-DR determinants could be identified on virtually all these HPC capable of proliferating in long-term cultures. Experiments in which the stromal layer had been irradiated provided evidence that the HPC themselves were truly HLA-DR+, and that the sustained proliferation of HPC was not due to activation of HLA-DR- residual HPC in the stromal layer by reinoculated HLA-DR+ accessory cells. Furthermore, it was shown that all HPC recognized in semisolid and liquid long-term cultures were HLA-DQ-. These results suggest that the human true pluripotential stem cell is HLA-DR+. These results open the possibility of studying class II-dependent regulation of hematopoiesis in liquid long-term cultures. PMID- 3862748 TI - [Study on survey, immunodiagnosis and treatment of human clonorchiasis in southern Taiwan]. PMID- 3862747 TI - Multiple class I and class II major histocompatibility complex allospecificities are generated with T cell receptor variable (V) domains created by a single Ti beta V gene family. AB - 10 alloreactive cytotoxic T lymphocytes using REX Ti beta variable region (V) gene segments in formation of their antigen/major histocompatibility complex (MHC) T3-Ti receptor were selected, cloned, and characterized in an effort to examine the extent of receptor diversity created by this one V gene family. Multiple and distinct class II as well as class I allospecificities were generated from the formation of different Ti beta V domains. Five allospecificities were directed at various class I epitopes whereas the other five were directed at class II MHC gene products. The following conclusions were drawn: (a) Ti beta V genes do not segregate into those that encode class I and those that encode class II allospecificities; and (b) there is no restriction on the Ti beta V gene pool available to T4+ vs. T8+ T lymphocytes. PMID- 3862749 TI - [Induction of morphological changes and polyamine alterations in glioma cells by butyrate]. PMID- 3862750 TI - [Dietary therapy of phenylketonuric patients in Taiwan]. PMID- 3862751 TI - Clinical experiences of diagnosis of left atrial thrombus in rheumatic mitral stenosis. PMID- 3862752 TI - Ambulatory electrocardiographic findings in patients with essential hypertension vs. normal subjects without apparent heart diseases. PMID- 3862753 TI - [The value of bile carcinoembryonic antigen in the differentiation of benign from malignant biliary obstruction]. PMID- 3862754 TI - [Ultrastructural examination of psoriatic lesions in psoralen-UVA treatment]. PMID- 3862755 TI - [Evaluation of the route of spreading of retroperitoneal abscess using computed tomography]. PMID- 3862756 TI - Gastrocolic, duodenocolic and gastrojejunocolic fistulas--report of 16 cases. PMID- 3862757 TI - Brain abscess after skull traction--a case report. PMID- 3862758 TI - Congenital short small intestine in siblings. PMID- 3862759 TI - [Aplastic anemia secondary to glue sniffing--report of 2 cases]. PMID- 3862760 TI - A case of an ectopic tooth in the maxillary sinus. PMID- 3862761 TI - Basic studies on condensability of amalgam mix. PMID- 3862762 TI - Multiple jaw cysts: DNA content study. PMID- 3862763 TI - Application of Moire topography to forensic odontology. PMID- 3862764 TI - Philip R. Barbell, NJDA president [interveiw]. PMID- 3862765 TI - The temporomandibular joint from the viewpoint of the anatomist. PMID- 3862766 TI - Macrophage accumulation of inhaled gallium-67 citrate in normal lungs. AB - Injected 67Ga has been used extensively to monitor inflammatory processes in the peripheral lung. We hypothesized that inhaled 67Ga may be useful in marking early airway inflammation in smokers. Eight nonsmokers and eight smokers breathed a 67Ga aerosol and imaging was performed immediately and 24 and 96 hr later. Approximately two-thirds of the initial dose remained in the lungs at 24 hr in both groups and no difference was seen between the groups. Only a very slight decrease was seen in both groups at 96 hr suggesting the gallium becomes bound to lung tissue or to cells not rapidly removed from the lungs. Autoradiography was performed on tissue from two smoke-exposed guinea pigs and two human patients undergoing resection surgery who breathed the gallium aerosol 24 hr prior to tissue removal. Silver grain accumulations were seen only over macrophages. We conclude that macrophage associated accumulation of 67Ga occurs in healthy lungs, and that it is not feasible to use aerosolized gallium to assess airway inflammation in smokers. PMID- 3862767 TI - The effect of methylene diphosphonate on the tissue distribution of gallium-67. AB - Nonradiolabeled methylene diphosphonate (MDP) was administered intravenously to CFW Swiss outbred female mice 2 hr prior to i.v. injection of [67Ga]citrate. The dose of MDP ranged from that usually administered for bone scanning (17.9 micrograms/kg) to 1,000 times the usual bone scan dose (17.9 mg/kg). The animals were killed 24 hr after administration of [67Ga]citrate and organ distribution determined as compared to control animals who received no MDP. At MDP doses one to ten times usual bone scan dose, the only organ showing significantly different 67Ga uptake was the lung and this difference in pulmonary uptake was accounted for by incidental pulmonary infection. At MDP doses 100 to 1,000 times usual bone scan dose, significantly altered 67Ga uptake was noted in lung, spleen, kidney, and gastrointestinal tract. The only consistent pattern of association of MDP administered dose and alteration in 67Ga uptake, however, was noted in the spleen where uptake was augmented with increased dose, and the bone where increased MDP dose depressed 67Ga uptake. Even this effect, however, was modest. It is concluded that at usual MDP dose levels used in bone imaging, no significant alterations occur in 67Ga distribution in normal mouse tissue. It is inferred that 67Ga scans performed following bone scans can be interpreted as if both radiopharmaceuticals had been administered separately. PMID- 3862768 TI - Tested accuracy of a decedent's age by teeth. PMID- 3862769 TI - ABC's periodontics. "M" is for Motivation. PMID- 3862770 TI - Pilot survey of the dental health of Indiana's adult population. PMID- 3862771 TI - The spread of odontogenic infections to the orbit: diagnosis and management. AB - Four cases of orbital cellulitis following the extraction of maxillary molars are presented. The time interval between dental extraction and development of orbital symptoms ranged from two hours to 13 days. All patients presented with fever, elevated leukocyte counts, and radiologic evidence of acute ipsilateral paranasal sinus infection. In addition, one patient presented with meningitis. Predisposing factors in three patients included nephrotic syndrome with chronic antral inflammation, pregnancy with upper respiratory tract infection, and heroin addiction. Sequelae included empyema and death, severe loss of vision, and blindness with ptosis and exotropia. One patient recovered completely. The anatomic pathways by which dental infection can spread to the orbit are discussed, and general therapeutic considerations are emphasized. PMID- 3862772 TI - The nature of vertical maxillary deformities: implications for surgical intervention. AB - A study was performed to identify the area within the maxilla where vertical maxillary deformities are expressed. Analysis of the maxillas of individuals who displayed 4 mm or more of the central incisors at rest were compared with those who displayed less than 1 mm. Similarly, individuals who had greater than or equal to 2 mm negative incisor overbite (open-bite) were compared with those who had greater than or equal to 2 mm positive overbite. The results showed that the vertical position of the maxillary skeleton (palate) was similar in all groups. The vertical excess was found to lie within the dentoalveolus. The clinical implications of these results are discussed. PMID- 3862773 TI - Chondrosarcoma of the jaw: review of fourteen cases. AB - From 1960 to 1983 a total of 14 cases of chondrosarcoma of the jaws were treated at the University College Hospital in Ibadan, Nigeria. The age of the patients ranged from 19 to 55 years (average age, 35 years), and nine of the patients were male. Six of the lesions were located in the maxilla and eight in the mandible. Most of the patients presented too late in the course of the disease to benefit from treatment; only one is known to be still alive. PMID- 3862774 TI - Patient response to surgical and nonsurgical treatment for internal derangement of the temporomandibular joint. AB - One hundred thirty-six patients who had been diagnosed as having internal derangements of the temporomandibular joint by history, clinical examination, and arthrotomography were retrospectively evaluated. Fifty-two patients had been treated by nonsurgical and 84 by surgical methods. A case review was conducted and a self-administered survey was distributed to patients to assess response to treatment. The results indicated that for a majority of the patients surgery had significantly reduced TMJ symptoms. Patients who had been treated nonsurgically also reported fewer symptoms following treatment, but the improvement was not as great as that of the surgical group. PMID- 3862775 TI - Biologic effects of freezing on tissues of the maxillofacial region. AB - An experimental study was done on the effects of freezing on various tissues of the maxillofacial region. After freezing, skin became necrotic, but the wound healed with a flat surface. Blood vessels showed injury of the endothelial cells and thrombosis in the veins. The internal wall of some arteries became thickened, and the lumen was narrowed. Paralysis of the facial nerve occurred immediately after freezing. Function usually recovered several weeks later. Cartilage and bone showed no change in shape after freezing, but the cells were destroyed. New cartilage and bone formation were seen in the later stages. PMID- 3862776 TI - Adult respiratory distress syndrome as a complication of oral and maxillofacial surgery. PMID- 3862777 TI - Pseudomalignant osseous tumor of the temporalis muscle. AB - A case is presented of a 10-year-old girl who had a benign osseous tumor of the temporalis muscle. The tumor appeared to be a variant of the so-called pseudomalignant osseous tumor of the soft tissues and could readily be distinguished from both osteogenic sarcoma and myositis ossificans. PMID- 3862778 TI - Ameloblastic sarcoma of the mandible. AB - Malignant ameloblastic odontogenic tumors have traditionally been classified as either ameloblastic fibrosarcomas, dentinosarcomas or odontosarcomas. This separation is based on the presence of either dentine or dentine and enamel in some lesions. To date, 28 cases of ameloblastic fibrosarcoma, one case of ameloblastic dentinosarcoma, and seven cases of ameloblastic odontosarcoma have been reported in the literature. An additional case of ameloblastic dentinosarcoma is reported in this paper together with a critical review of the clinicopathologic features of previously reported cases of malignant ameloblastic neoplasms. The presence of dental matrix material is not specific and is found in a wide variety of odontogenic tumors in variable amounts. This study supports the concept that the presence of dental matrix material does not alter the basic biologic characteristics of these neoplasms. Accordingly, to simplify a confusing nomenclature, we suggest that malignant tumors of this type be referred to collectively as ameloblastic sarcomas. PMID- 3862779 TI - Ludwig's angina resulting from the infection of an oral malignancy. AB - A case of Ludwig's angina is reported in a 60-year-old woman who was discovered to have squamous-cell carcinoma of the tongue and floor of the mouth during intubation for airway management. This report emphasizes the need to consider infection of oral malignancies of the tongue and floor of the mouth in the etiology of Ludwig's angina when an odontogenous origin cannot be demonstrated. It also illustrates the value of bronchoscopy-directed nasotracheal intubation for diagnosis and airway management in such cases. PMID- 3862780 TI - Computed tomography in the diagnosis and treatment of mandibular ameloblastoma: report of cases. AB - Treatment of ameloblastoma is based on clinical manifestations and radiological features. The value of routine radiographs in determining the extent of the lesion may be limited. Four cases of mandibular ameloblastoma were studied using axial and coronal computed tomography (CT). The soft-tissue mass, destruction of cortical bone, and extension of tumor into the infratemporal fossa and adjacent structures were clearly visualized. These features demonstrate the superiority of CT over conventional radiography in delineating the extent of the lesion, which may be essential to its management. PMID- 3862781 TI - Surgical treatment of van Buchem's disease. PMID- 3862782 TI - Fracture of the hyoid bone associated with a mandibular fracture. AB - A fracture of the hyoid bone in association with a mandibular fracture in a 29 year-old man is reported. The literature pertaining to this rare injury is reviewed and the clinical presentation, diagnosis, and treatment of fractures of the hyoid bone are discussed. PMID- 3862783 TI - Management of an unfavorable lingual fracture during a sagittal split osteotomy. PMID- 3862784 TI - Treatment of condylar fractures associated with other mandibular fractures. PMID- 3862785 TI - Mandibular fracture in a five-week-old infant. PMID- 3862786 TI - Maxillary nerve involvement in bacterial endocarditis. AB - A case of right maxillary nerve paresthesia during an active phase of bacterial endocarditis probably due to embolic occlusion of the nerve's vascular supply is reported. The authors suggest that infective endocarditis be considered as a rare but potential cause of unexplained trigeminal nerve branch lesions, and that such lesions be sought in cases of established endocarditis. PMID- 3862787 TI - Conversion phenomenon following general anesthesia. AB - Two cases have been presented that demonstrate a previously undescribed complication of general anesthesia, i.e., altered recovery of consciousness secondary to hysterical conversion reactions. This potential complication must be considered when an organic cause for the symptoms cannot be found in a psychologically unstable individual. A helpful diagnostic sign is described. Consultation with a psychiatrist is mandatory if immediate alleviation of the symptoms is not obtained by the anesthesiologist and/or the surgeon. PMID- 3862788 TI - Sjogren's syndrome in a young adult. AB - Sjogren's syndrome is very uncommon in young adults and children. Young patients who have connective tissue disorders should be observed carefully for any signs of this condition. Recurring parotitis, especially in females, should trigger a high index of suspicion that salivary stasis is occurring and that Sjogren's syndrome may be present. Young patients who are diagnosed as having Sjogren's syndrome should be followed very carefully because they are at much greater risk to develop lymphoma. PMID- 3862789 TI - Case 57: multiple enlargements of the premaxilla and mandible. PMID- 3862790 TI - Modification of the biphase appliance for large mandibular resections. PMID- 3862791 TI - The disc of the human temporomandibular joint: design, function and failure. AB - The directions and limits of mandibular movements are controlled by muscles and nerves, and by biomechanical constraints in the dentition and the temporomandibular joints with their associated ligaments. This paper analyses biomechanical constraints in relation to shape, function, stability and dysfunction of the disc in the joint. It is argued that the dense part of the disc is modelled in response to condylar forces which compress it into the articular eminence thereby thinning its centre and squeezing out a thickened anulus around its rim. Because of a lack of congruence between the two articulating surfaces of the joint and a very low coefficient of friction, the disc is potentially squeezed off the condyle by compression forces during opening, closing and mastication. It is stabilized mainly by its anulus whose thick rim is unable to prolapse between the condyle and articular eminence. An important function of the elastic tissue behind the thick part of the disc may be, by contracting, to prevent the soft tissues behind the joint being nipped between the condyle/disc/temporal bone when the jaw is closing. The author suggests that during mastication the function of the disc is not only to spread the joint forces but also to limit the depth to which the condyle is compressed into the soft tissues covering the temporal bone and thereby allow the condyle (and disc) sufficient freedom to spin and slide over the temporal bone without distorting and damaging the surfaces. In other words, the function of the disc is to destabilize the condyle. In terms of biomechanical constraints the disc seems more liable to prolapse anteriorly than posteriorly. It prolapses when the compression forces which tend to wedge it off the condyle cannot be resisted by its thickened anulus. If the energy of compression is stored within the distorted disc and suddenly released there is an audible click. PMID- 3862792 TI - Effects of various agents in cleaning cut dentine. AB - The effectiveness of various agents in cleaning cut dentine surfaces was investigated. Attempts to remove the smeared layer of dentine after the preparation of a cavity showed that a polyacrylic acid (Durelon liquid) gave the best result, flour of pumice or a prophylaxis paste (Prevodontic) used with a rubber cup were effective, but 3% hydrogen peroxide and a cavity cleaner (Cavilax) were not. The only effective agents following the use of a zinc oxide eugenol temporary cement were the flour of pumice and prophy paste. PMID- 3862793 TI - The temporomandibular joint in young adults at autopsy: a morphologic classification and evaluation. AB - Macroscopic features of temporomandibular joints (TMJs) were studied in young adults who comprise the largest portion of individuals seeking TMJ treatment. Deviation in form (DIF), arthrosis, size, shape and disc displacement were evaluated on ninety-five autopsied TMJs. Few TMJs (13%, 12/95) showed no intracapsular changes. Thirty-nine per cent (37/95) of the TMJs displayed mild-to marked DIF in all three TMJ components. Smaller changes were more prevalent and tended to appear in the younger TMJs. Condylar changes were more exuberant and extensive compared to the other components. Minor arthrotic lesions were visible in 3% (3/95), and all displayed DIF. Disc displacement was found in 12% (11/95) and was more common in women (P greater than 0.05). Folding and deformation of the articular disc was associated with disc displacement (P less than 0.01), the direction of which was mostly anteromedial. Most of the unchanged condyles' components had curved, slightly rounded, convex, and elliptical shapes when viewed from different planes (P less than 0.01). Applied in diagnosis, the presence of DIF can be inferred from features which deviate from the above shapes. The concept that the above macroscopic changes might be a precursor to TMJ arthropathy in susceptible individuals is compatible with the results of this study, but the most apt characterization is that TMJ changes in this age group are adaptive phenomena occurring in order to cope with the details of articular fit and function. PMID- 3862794 TI - The refractory period of the masseteric cutaneous silent period. AB - Silent periods were elicited in the electromyographic activity of the masseter and temporalis muscles from six normal subjects, by electrical stimulation of the skin over the contralateral masseter during clenching. Pairs of suprathreshold square pulses with varied time intervals were delivered using surface electrodes. It was found that the silent periods, which were mostly of the long latency (about 53 ms) type, had a refractory period, during which a new silent period could be evoked only by increasing the strength of the second stimulus. This refractory period could last for up to 1.5 s. During the first 200 ms after the first stimulus a second silent period was almost impossible to evoke with the moderately painful stimuli used in the present experiments. It is suggested that the refractory period should be considered as significant for the methodology when recording the silent period duration. It is also suggested that the long latency silent period should be recorded as a separate parameter and differentiated from the short latency (10-12 ms) silent period. This may be of special importance to recognize when a short latency silent period and a long latency silent period merge. PMID- 3862795 TI - Pathologic attrition and maximal bite force. AB - The maximal bite force was recorded between antagonizing anterior teeth in a group (n = 10) of patients with pathologic attrition and in a control group. No statistically significant difference between the maximal bite forces was recorded. Also, the effect on the maximal bite force of the continuous wearing of a partial bite raising splint for 4 months was recorded. The great individuality in reaction patterns prohibited simple generalizations. However, in some individuals the maximal bite force was larger when biting on the splint than without, both at base line and after 4 months. Also, the maximal bite force showed a tendency to increase with time. The findings indicate that pathologic attrition is not necessarily associated with a high maximal bite force. Also, the maximal bite force recorded under various conditions is seemingly not an absolute value but rather the result of a number of factors of varying importance for different individuals. PMID- 3862796 TI - A neurophysiological approach to the pathology and aetiology of temporomandibular dysfunction. PMID- 3862797 TI - The effect of acrylic bite plane splints and their vertical dimension on jaw muscle silent period in healthy young adults. AB - A significant question relative to treatment and disappearance of symptoms is raising the bite in combination with a maxillary bite plane splint in patients with TMJ muscle dysfunction. The objective of this research was to investigate the effect, if any, occlusal bite plane splints have on the latency and duration of the mention tap silent period and particularly whether the degree to which the bite is raised is of significance. Recordings were made in healthy young adults from both anterior temporal and masseteric muscles while subjects were clenching at their 70% maximum clenching effort. Placement of a splint significantly (P less than 0.05) prolonged the silent period duration (SPD). However, mean SPD values taken at two different vertical raised bites did not differ significantly (P greater than 0.05). The anterior temporal muscle SPD was less sensitive to a smaller change of vertical dimension than the masseteric SPD. Silent period latencies remained unchanged in all experimental conditions. PMID- 3862798 TI - Wear patterns of composite restorative resins in vivo; observations by scanning electron microscopy. AB - In this study, the wear pattern of seven commercial composite resins, one experimental composite and one dental amalgam were investigated. These materials were separately inserted in a separation preparation cavity of the patient's mouth. After clinical service for 3, 9 and 12 months the specimens were taken out and observed by scanning electron microscopy (SEM). It was found that the softer resin matrix wore away first while the inorganic filler particles showed no signs of abrasive wear, whereafter filler particles were loosened once there was no support of the resin matrix around them. PMID- 3862799 TI - Dental occlusal wear and degenerative disease of the temporomandibular joint: a correlational study utilizing skeletal material from a contemporary population. AB - Forty crania and mandibles with intact dentition exceeding twenty-six teeth and bilaterally intact condyle-fossa apparatus were evaluated for attrition and degenerative joint disease. The skeletal specimens all represent a twentieth century contemporary American population from the Atkinson Skull Collection at the University of the Pacific School of Dentistry. While 23.1% of this sample exhibited some degree of erosive osseous degenerative wear involving the condyle or articular fossa and 76.3% exhibited occlusal tooth wear, no significant correlation between the degree of attrition and the severity of degenerative joint disease could be documented. PMID- 3862800 TI - Tooth loss, attrition and temporomandibular joint changes in a Romano-British population. AB - Mandibular condyles and temporal fossae were studied in a large Romano-British collection of skulls. The size and shape of the condyles differed from those in previous populations studied. Changes in form or shape of the condyles were age related and could be correlated to the number of teeth lost on the same side and on the contralateral side. No statistically significant correlations were seen between attrition and condylar form and surface change. PMID- 3862801 TI - Lateral preference in mastication: a feasibility study. AB - To study lateral bolus placement during mastication, referred to as masticatory lateral preference, fifteen males and ten females chewed sugarless gum for 15, 20 and 25 s, and visual inspections were done of either right or left side bolus placements. In each of three series of observations, there were no significant differences between right or left side bolus placements. Three consecutive spot checks, in single subjects, showed that lateral preference occurred at random. However, information on a favoured chewing side predicted fairly reliably the side of observed masticatory lateral preference. Observed lateral preference could not be predicted from hand laterality. Consistent and predominant right or left lateral preference was, presumably, an expression of mainly motivational chewing behaviour. PMID- 3862802 TI - Lateral preference in mastication: an electromyographic study. AB - To study concurrence of specific electromyographic chewing patterns and the side of mastication, twelve subjects chewed gum for 15, 20 and 25 s. Gum bolus placement on the right or left side of the dentition was estimated by three series of visual inspections. Contraction patterns of the chewing and non-chewing side masseter muscles were appraised by integrated and cumulative surface electromyography. Consistent and predominant gum bolus placement on the right side of the dentition could be predicted fairly reliably from comparative electromyographic observations. This was also the case in instances of consistent left-sided gum bolus placement, but not in predominant left-sided bolus placement. The latter phenomenon was explained by deviant observations made in two subjects only. Agreement between a presumed chewing side and a predictive contractility pattern was established in 78% of observations (P less than 0.001). PMID- 3862803 TI - A photogrammetric method for monitoring changes in the residual alveolar ridge form. AB - Resorption of the residual alveolar ridge calls for regular attention to the fitting surface of a denture. In the case of distal extension partial dentures, changes which occur in less than a year may require attention. These changes are apparent, though difficult to measure using radiographic techniques. Stereophotogrammetry is a means of recording and measuring contours of land masses. A short focus non-metric camera was used in this study to produce stereoscopic paired pictures of four casts of the same partial dentition. Additional casts were made 2 and 12 months after a partial denture had been made. A stereophotogrammetric plotting instrument was used to map the alveolar ridge area of each cast. A prescribed area for each map was traced out and the volume above a reference height was calculated. The percentage error between the four columns for the pre-treatment casts was +/- 2%. A 10% loss of ridge volume was observed after wearing a partial denture for 2 months. The same area observed 12 months later revealed an 18% volume reduction. Short range stereophotogrammetry may be applied to study changes in alveolar ridge morphology which may result from wearing a partial denture. PMID- 3862804 TI - Childhood bone marrow monosomy 7 syndrome: a familial disorder? PMID- 3862805 TI - Platelet-activating factor is a potent stimulus for renal prostaglandin synthesis: possible significance in unilateral ureteral obstruction. AB - Platelet-activating factor (PAF), a lipid with potent platelet-stimulating and hypotensive properties, has been shown to stimulate the release of prostaglandins (PGs) from a number of cell types. It is produced by a variety of inflammatory cells and the renal medulla. However, no studies to date have examined the effect of PAF on the intact kidney. We, therefore, studied the effect of bolus injections of PAF on the isolated perfused rabbit kidney subjected to aseptic ureteral ligation for 72 hr. Intrarenal resistance and release of PGs by both the hydronephrotic (HNK) and contralateral kidney (CLK) were quantified. Intrarenal administration of PAF causes a dose-dependent stimulation of the release of PGE2, thromboxane B2 (TxB2) and the PGI2 metabolite, 6-keto-PGF1 alpha from the HNK and CLK. The magnitude of the release from the HNK is much greater than that for the CLK. A 100-ng bolus injection of PAF into the HNK results in the release of 1561.0 +/- 312.0 and 117.7 +/- 38.2 ng of PGE2 and TxB2, respectively, whereas administration of this dose to the CLK causes 291.0 +/- 35.0 ng of PGE2 and 19.0 +/- 4.2 ng of TxB2 to be released. Renal vascular resistance (RVR) is increased by PAF in the HNK. Product identity was confirmed using selective inhibitors and bioassay. These data show that PAF is a potent stimulus for renal PG release and that this release may have vascular consequences. PMID- 3862806 TI - Preparation of a 135-degree shoulder for a ceramometal margin using an end cutting bur. AB - The Jet No. 7345 is an end-cutting bur that accurately dresses the shoulder of a ceramometal preparation to a smooth, well defined surface that is 135 degrees to the path of insertion. PMID- 3862807 TI - Retention and depth of insertion of two self-shearing pins. PMID- 3862808 TI - Technique for transferring information from a pantograph tracing to semiadjustable articulators. AB - A technique that makes possible the direct transfer of numbers from a programmed fully adjustable articulator to a simpler articulator without having to make new eccentric records has been described. PMID- 3862809 TI - Physical properties of acrylic resin polymerized by four different techniques. PMID- 3862810 TI - Bony deposition under a fixed partial denture. PMID- 3862812 TI - Carbon fiber acrylic resin composite: an investigation of transverse strength. PMID- 3862811 TI - Dental needs and dental service use patterns of an elderly edentulous population. AB - This study was undertaken to examine an elderly edentulous population to evaluate current dental needs and dental service use rates as well as to determine whether trends toward a reversal of this group's poor dental care habits are present. Of the 443 elderly individuals screened in the current study, 168 were determined to be edentulous in both dental arches. This means that 38% of the elderly population examined would at some time require dental services either to maintain their edentulous arches and related intraoral structures in a state of health or to fabricate new or maintain existing complete prostheses in a properly functioning condition. This figure is 12% lower than 1974 statistics, which indicated that 50% of the nation's elderly population were edentulous. A larger population would have to be surveyed to determine if this trend toward declining edentulousness is a national phenomenon or simply characteristic of the current population sample. Despite the lower proportion of edentulous individuals within the study population, some disturbing results were obtained. Although 92% of the population had complete dentures that they claimed were worn most or all of their waking hours, over 90% of these dentures were evaluated by examiners as requiring significant refinement (26%) or remake (69%). In addition, 58% of this group of individuals felt that they did not or were not sure whether they required current dental treatment; 58% also felt that the fit of their dentures was excellent or good. These figures demonstrated that only slightly more than half the study population was aware that their dentures were in need of corrective treatment.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3862813 TI - Auricular compression stent. AB - An auricular compression stent has been developed for maintaining uniform and adjustable compression after surgical removal of earlobe keloids. The two component device is made from heat-polymerized acrylic resin and assembled with nylon screws. PMID- 3862814 TI - Soft tissue response to endosseous titanium oral implants. PMID- 3862815 TI - A technique for evaluation of centric relation tooth contacts. Part I: During normal temporomandibular joint function. AB - An indirect method to locate the first tooth contacts in centric relation was described in this study. Mounted casts with an associated table and styli were used to locate the position of contact points in three planes. The method was tested using the anterior occlusal stop with chin point guidance and bimanual manipulation for recording centric relation. Ten records from one subject were analyzed statistically for each method. At the p less than .05 level of significance, the anterior occlusal stop produced a centric relation position more posterior than that found with bimanual manipulation. There was no statistically significant difference in the vertical and mediolateral planes. The anterior occlusal stop method produced more consistent tooth contacts in all three planes. The centric relation points found on the recording plates correlated well with the initial tooth contacts marked on the cast. This indirect method is an accurate means of recording and reevaluating changes in tooth contact positions in three planes. PMID- 3862816 TI - Accuracy of laminated wax interocclusal wafers. AB - Different types of wax interocclusal records were tested to determine if the type of recording material affects cast position when dental plaster is used to mount casts. The results indicate that a difference in the type of wax record is not a significant factor in cast fixation. PMID- 3862817 TI - Electromyographic relaxed mandibular position in long-faced subjects. AB - Previous articles have presented conflicting results concerning the relationship of EMG rest position in subjects with varying craniofacial morphology. This study sought to resolve the issue by studying long-faced subjects and controlling head position. Our findings showed that long-faced subjects have large EMG rest positions in contrast to the results reported by Wessberg et al. We were not able to resolve the differences between these two studies by variation in head position or lack of consistent sample population. The results of this study and earlier studies question the clinical practice of using EMG rest as a starting point to establish vertical dimension of occlusion. PMID- 3862818 TI - Acupuncture compared with stomatognathic treatment for TMJ dysfunction. Part I: A randomized study. PMID- 3862819 TI - Compatibility of agar hydrocolloid duplicating materials with dental stones. PMID- 3862820 TI - An evaluation system for teaching clinical removable prosthodontics. AB - The continuous assessment and updating of clinical evaluations are integral aspects of dental education. The purpose of this article was to describe the development, implementation, and assessment of an evaluation system for clinical removable prosthodontics. A system based on a three-point scale (RST) was adopted and implemented with the intent of maximizing evaluation effectiveness while minimizing stress on students and faculty members. To date, the RST system has improved both the quality of clinical evaluation and the level of clinical learning. The RST clinical evaluation system appears to be defusing students' ardent quests for grades while promoting the teaching potential within the evaluation process. The system also stimulates student self-evaluation, improves the consistency of faculty grading, facilitates student counseling, and permits an in-depth analysis of the evaluation system at regular intervals. PMID- 3862821 TI - An alternate simplified technique for rebasing complete dentures. PMID- 3862822 TI - Simplified technique for placement of a medical-grade adhesive silicone denture liner. AB - A simplified technique for placement and care of a long-term resilient liner has been described. The procedure can be accomplished in the dental office without an investing or flasking procedure. Finishing is easily accomplished, and the retention of the liner is secure from peeling or separating. Disadvantages include the necessity of having a satisfactory denture border prior to the procedure and the tendency of RTV silicones to develop fungal growth over a period of time without proper care. PMID- 3862823 TI - A device to facilitate the replacement of pantograph styli elastics. PMID- 3862824 TI - The Journal of Prosthetic Dentistry guidelines for reporting statistical results. PMID- 3862825 TI - Classification of the eating disorders. PMID- 3862826 TI - Subgroups of anorexia nervosa and bulimia: validity and utility. AB - Sociodemographic and psychodynamic similarities and differences among four subgroups of eating disordered females seeking outpatient consultations for anorexia nervosa and bulimia are presented. Supporting the spectrum concept of eating disorders, the four diagnostic subgroups are: anorexia nervosa, restricting; anorexia nervosa with bulimic complications; normal weight bulimia with a history of anorexia nervosa; and normal weight bulimia without a history of anorexia nervosa. Overall, the 165 patients are white, middle to upper-middle class females in their early twenties. The highest levels of psychopathology, as measured by the Eating Disorder Inventory, was manifested by patients afflicted with both anorexic and bulimic symptomatology, either in the past or at time of consultation. Implications for diagnostic classification and clinical intervention are discussed. PMID- 3862827 TI - Similarities among bulimic groups selected by different weights and weight histories. AB - Four groups of bulimic patients with different weights and weight histories were compared on measures of eating and psychological functioning. Results with the Eating Disorder Inventory and Eating Attitudes Test indicated that groups were similar in terms of attitudes toward food, eating and body dissatisfaction as well as other traits which have been identified as relevant to eating disorder patients. Results also indicated that the referral patterns of patients with different weight histories have changed over time; previously, most patients had anorexia nervosa either currently or historically but more recently many patients are presenting with symptoms of equal severity but with no history of anorexia nervosa. It is concluded that diagnostic categories for bulimia formed solely on the basis of weight variables may not be clinically useful. PMID- 3862828 TI - The significance of the neurotic symptoms of bulimia nervosa. AB - The significance of the neurotic symptoms of bulimia nervosa is a subject of current debate. In the present paper, data are reported on changes in these symptoms during the course of psychological treatment directed at the eating disorder itself. A significant association was found between outcome in terms of eating habits and the severity of neurotic symptoms after treatment. There was no association between outcome and the pre-treatment level of neurotic symptoms. These findings suggest that the neurotic symptoms are likely to constitute a secondary psychological reaction. PMID- 3862829 TI - A review of body-image studies in anorexia nervosa and bulimia nervosa. PMID- 3862830 TI - Satiety responses in eating disorders. AB - Appetite and satiety responses in a test meal paradigm were studied in six anorexia nervosa patients (four had bingeing and purging behaviors) and in nine normal control women. The anorexic patients were distinguished from normal controls by the amounts of food taken and by the pattern of the hunger and fullness responses to the test meal. Possible explanations for these findings are discussed. PMID- 3862831 TI - Empirical assessment of identity in anorexia and bulimia nervosa. AB - Researchers have neglected the study of the self concept of individuals who develop anorexia and bulimia nervosa. Towards rectifying this situation, Identity Structure Analysis (ISA) is introduced as an appropriate framework allowing the specification and empirical testing of postulates regarding disturbed identity development in anorexic disorders. The data presented distinguish a common constellation of identity characteristics in those suffering from anorexia and bulimia nervosa that differentiate them from normal and psychiatric control groups. Their identity pattern tends to be anti-developmental and in a state of 'identity crisis', in which identification conflicts with the maternal metaperspective of self (me as my mother sees me) are especially significant. Further analysis suggest that anorexics are in a phase of 'plummeting' identity crisis, whilst the patients in the sample with bulimia nervosa are in a 'sustained' phase. Future directions for research are noted. PMID- 3862832 TI - Mood and food: an analysis of bulimic episodes. AB - The present study examined those factors which differentially lead to normal eating and binge eating. Twenty-one bulimic subjects and comparison subjects monitored their mood, hunger, and food intake hourly over a number of days. The bulimic sample ate fewer meals and had lower overall mood. Positive mood, food abstinence combined with intensified hunger, and being in the company of another person preceded normal eating (i.e. retained meal). Negative mood, recent consumption of food, and being alone preceded bulimic episodes. PMID- 3862833 TI - Controlling weight by purgation and vomiting: a comparative study of bulimics. AB - This study assessed the efficacy of self-induced vomiting and purgation, respectively, in attempts at preventing weight gain in patients with bulimia. It was found that the vomiters ate significantly more yet weighed less: the purgers ate less but weighed significantly more. Such findings strongly suggest that excess purgation has little impact on intestinal absorption even at the doses used in bulimia. Weight control appears to be exercised by dietary restraint not by the pharmacological action of the laxatives used. PMID- 3862834 TI - Bulimia: multivariate predictors of life impairment. AB - The current study investigated the ability to predict life impairment in a group of women who reported frequent binge eating episodes. Results indicated that a combination of feeling out of control when binge eating, frequent binge episodes, frequent use of laxatives for weight control, plus early age at onset, guilt feelings after binging, and a history of low weight best predicted life impairment. Implications of these findings are discussed with respect to refining DSM-III criteria for bulimia. PMID- 3862835 TI - The prediction of relapse in bulimia nervosa. AB - Thirty-nine women successfully treated for bulimia nervosa were followed up six months after the conclusion of treatment and classified as maintaining recovery or partially or completely relapsed. Clinical and psychometric variables including body image disturbance and dissatisfaction were entered into regression equations to identify predictors of relapse. Dissatisfaction with body image at the end of treatment was the most potent predictor of relapse. The finding is interpreted as underscoring the importance of addressing issues of body image in therapy if treatment gains are to be maintained. PMID- 3862836 TI - Adverse sexual experience in childhood and clinical eating disorders: a preliminary description. AB - Seventy-eight eating disordered patients were asked systematically about any history of adverse sexual experience. About two thirds gave such a history. The events reported were often distressing and significant to the subject. It is unclear what role such events play in the causation of later eating disorder. PMID- 3862837 TI - Anorexia nervosa, bulimia and alcoholism--association of eating disorder and alcohol. AB - A series of 27 cases is presented where eating disorders have been followed by clinical alcoholism or where alcoholic patients have shown to have clear previous episodes of anorexia nervosa or bulimia. Characteristics and history of the cases are described. It is argued that the coincidence is far higher than has been generally recognised. PMID- 3862838 TI - Anorexia nervosa and bulimia in female adolescents with insulin dependent diabetes mellitus: a systematic study. AB - An unselected sample of 46 female adolescents with insulin-dependent diabetes mellitus (IDDM) for more than one year were assessed systematically for the presence of anorexia nervosa and bulimia. These disorders and their partial syndromes were found in 19.5% of this population. Anorexia nervosa and bulimia diagnosed on the basis of DSM-III criteria were each found in 6.5% of the population representing approximately a 6-fold and 2-fold increase respectively in the expected prevalence for similar nondiabetic individuals. Bulimic symptoms were associated with poor metabolic control as reflected in blood levels of glycosylated hemoglobin (HbAl). These findings have important implications both for the pathogenesis of anorexia nervosa and bulimia and for the management of some cases of IDDM with unstable metabolic control. PMID- 3862839 TI - Treatment of eating disorders: winning the war without having to do battle. AB - This paper discusses various techniques therapists can employ to handle the power and control issues encountered when treating restrictive eating and binge/purge (vomiting) behaviors. Winning the war without having to do battle is one of the therapist's most difficult tasks. Before attempting change, it is important to acknowledge the significance and function of the symptom behaviors; the reasons why the person does not want to, and at certain points, should not give them up; and, the total powerlessness of the therapist to make the person relinquish them. However, since elimination of symptoms is a goal of therapy, modification of eating behaviors must be addressed. Methods of balancing the timing and techniques of treating the symptom behaviors versus the emotional issues are presented so as to provide clinicians with tools to effect change but avoid the control battles that inhibit progress in therapy. Included is a discussion of the utilization of individual, family, and group therapy. PMID- 3862840 TI - The management of bulimia nervosa. PMID- 3862841 TI - Evaluating a group treatment for bulimia. AB - A multifaceted group-based approach to the treatment of bulimia is described, that focuses on recovering a sense of control by examining how control is relinquished, and can be regained by developing adaptive attitudes and behaviour about food and eating, the body, and interpersonal relationships. Results from an end of programme assessment and then at six month, 12 month and 18 month follow ups indicate that a successful reduction in bingeing and vomiting and a variety of other changes was achieved and maintained by 36 of the 40 participants. PMID- 3862843 TI - Anorexia nervosa and bulimic disorders: current perspectives. Proceedings of the Conference on Anorexia Nervosa and Related Disorders. Swansea, Wales, 3-7 September 1984. PMID- 3862842 TI - Outcome and prognosis in anorexia nervosa and bulimia: some results of previous investigations, compared with those of a Swedish long-term study. PMID- 3862844 TI - Fetal stimulation of maternal immunoglobulin production in mice. AB - Within 12-24 h of parturition in mice, there was a dramatic increase in the number of immunoglobulin secreting cells in the paraaortic lymph nodes (PALN) draining the pregnant uterus. Compared with stimulation with lipopolysaccharide the ratio of IgG:IgM forming cells was very high in PALN draining a pregnant uterus. The response was eliminated when fetectomy (ablating the embryo but leaving the placenta intact) was carried out on the 12th day of pregnancy. With unilateral fetectomy the uterine horn with intact fetal/placental units can be used as a positive control since lymphoid drainage is laterally confined. Neither healthy (gross and histological criteria) nor partly necrotic placentae stimulated Ig secreting cells in the PALN. The placentae of bilaterally fetectomized females were delivered apparently normally and at about the same time as normal (control) fetuses. Injection of prostaglandin E-2 or F-2 alpha into the tail base led to the appearance of Ig-forming cells in the PALN of normal (virgin) female mice. Indomethacin fed to the pregnant female greatly reduced the numbers of these cells in the PALN. We conclude that the observed local stimulation of maternal Ig production by the fetus may be involved in the transplacental transfer of Ig from mother to fetus. PMID- 3862846 TI - Production of mononuclear cell factor by mononuclear phagocytes from rheumatoid synovial fluid. AB - Collagenase-and PGE1-stimulating activities (mononuclear cell factor or MCF) have been found in culture supernatants from synovial fluid macrophages (SF-M phi) of patients wih rheumatoid arthritis. The apparent molecular weight of the MCF activity present in SF-M phi supernatants was between 15-20,000 daltons, which is similar to interleukin I. All the SF-M phi supernatants from patients tested showed the MCF activity. Our study presents evidence for MCF production by monocyte-macrophages at the local site of the lesion. PMID- 3862845 TI - Prostaglandin F-2 alpha is transferred from the uterus to the ovary in the sheep by lymphatic and blood vascular pathways. AB - [3H]Prostaglandin F-2 alpha (PGF-2 alpha) was infused into a uterine lymphatic vessel or a uterine vein for up to 1 h, or injected into the uterine lumen of anaesthetized non-pregnant sheep 7-15 days after oestrus. After an intraluminal injection, labelled PGF-2 alpha was recovered in uterine lymph and peak radioactivity was reached 50 min after injection. [3H]PGF-2 alpha infused at a constant rate into a uterine lymphatic vessel resulted in a maximum concentration of radioactivity in plasma which was 5.6- and 1.7-fold higher in the adjacent utero-ovarian and ovarian vein, respectively, than in carotid arterial plasma. Estimation of the amount of infusate transferred from a lymphatic into ovarian venous blood gave a value (0.4%) similar to that for transfer from a uterine vein (0.3%). Evidence for local transfer was substantiated by the presence of significantly higher concentrations of 3H-labelled compounds in the ovary and corpus luteum adjacent to the site of intra-lymphatic infusion compared with those in the opposite organs. The concentrations in the adjacent ovary and corpus luteum were significantly greater when an intra-lymphatic rather than intra uterine vein infusion was adopted. The results show that [3H]PGF-2 alpha is transferred locally from uterine lymphatic vessels into the adjacent ovary, corpus luteum and ovarian vein. PMID- 3862847 TI - HLA-DR antigens in polymyalgia rheumatica and giant cell arteritis. PMID- 3862848 TI - The prognostic significance of bone and joint manifestations in childhood leukemia. PMID- 3862850 TI - Alcohol-induced impairment of central nervous system function: behavioral skills involved in driving. AB - Several points emerge from the large body of data on the effects of alcohol on CNS function. First, the degree of impairment is dose related, but not identical or strictly linear for all behaviors. Alcohol-related impairment of behavioral skills involved in driving is greatest for those tasks that require cognitive functioning; simple perception alone is least affected. Impairment of cognitive functioning, which includes information processing and decision making under conditions of divided attention, is evident at BALs above 50 mg/dl and is markedly affected above 100 mg/dl. Above a BAL of 100 mg/dl, almost all behavioral skills are impaired by alcohol. Most studies have employed only one or at most two doses of alcohol in testing for impairment. The limited range of BALs studied makes determination of the overall shape of the dose-response curve difficult. Second, alcohol-related impairment of CNS functions cannot be demonstrated at low BALs. There is no consistent evidence that BALs below 50 mg/dl impair any behavior in most individuals. Youth and the elderly, groups not typically studied in the laboratory, may represent exceptions to this general observation. Nonetheless, these findings are more consistent with a threshold effect for impairment than for impairment at all levels of BAL. Third, for most behavioral skills, the decrement in performance after alcohol is slight, rarely exceeding 35-50% of the control period. In many studies, changes of only 8-10% are reported to be statistically significant. Whether these small statistically significant decrements in performance are an explanation for increased crash risk remains uncertain.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3862851 TI - Deterring drunken driving: an analysis of current efforts. PMID- 3862852 TI - Current problems in drinking-driving: research and intervention. PMID- 3862853 TI - Licensing and other controls of the drinking driver. PMID- 3862854 TI - The use of incentives for the promotion of accident-free driving. PMID- 3862855 TI - Evaluation of the effectiveness of educational and rehabilitation efforts: opportunities for research. PMID- 3862856 TI - The role of mass media in alcohol and highway safety campaigns. PMID- 3862857 TI - Major social action groups against drunken drivers. PMID- 3862858 TI - Human risk factors in alcohol-related crashes. PMID- 3862859 TI - The role of research in policy decisions. PMID- 3862860 TI - Human-related risk factors in traffic crashes: research needs and opportunities. PMID- 3862861 TI - Review of the major risk factors. PMID- 3862862 TI - Research needs and opportunities concerning human-environmental interactions in crashes involving alcohol. PMID- 3862863 TI - Social and cultural contexts of the drinking-driving event. PMID- 3862864 TI - Drinking and driving in the sociocultural context: research needs and opportunities. PMID- 3862865 TI - Absorption, distribution and elimination of alcohol: highway safety aspects. AB - Key aspects of the pharmacokinetics of alcohol are highly relevant to highway safety. Of particular pertinence are the partition of alcohol between various body tissues and fluids and the resulting alcohol concentration ratios for blood: breath and other body fluids, as well as the irregularity and short-term fluctuations of the blood and breath alcohol curves. Most alcohol pharmacokinetics parameters are subject to wide intersubject variability, as exemplified by peak blood alcohol concentrations reached on ingestion of identical weight-adjusted doses, time to peak after end of drinking and the rate of alcohol elimination from the blood. This great biological intersubject variability, when combined with sex-, age- and time-related differences, makes the blood alcohol information in widely distributed alcohol consumption nomograms and tables based on mean data inappropriate as a guide for the drinking behavior of individuals. Although there is good statistical correlation between the alcohol concentration of different body tissues and fluids in the fully postabsorptive state, wide individual variations from the population mean alcohol partition values exist. It is often impossible to determine whether the postabsorptive state has been reached at any given time. Those factors make it impossible or infeasible to convert the alcohol concentration of breath or urine to the simultaneous blood alcohol concentration with forensically acceptable certainty, especially under per se or absolute alcohol concentration laws. Inclusion of breath alcohol concentrations in drinking-driving statutes, as definitions or per se offense elements, makes unnecessary the conversion of breath alcohol analysis results into equivalent blood alcohol concentrations. Urine alcohol concentrations are inadequately correlated with blood alcohol concentrations or with driver impairment, and analysis of bladder urine is, therefore, inappropriate in traffic law enforcement. Significantly large sex related differences in pharmacokinetic parameters have been demonstrated (e.g., in peak blood alcohol concentrations for weight-adjusted doses). The effects of age and time of day have been less extensively studies and are less clear. Breath and blood alcohol time curves are subject to short-term fluctuations from the trend line and other irregularities, and often do not follow the typical Widmark pattern. From the existing information on pharmacokinetics of alcohol and the characteristics and variability of blood and breath alcohol versus time curves, the following conclusions can be reached.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3862866 TI - Purine and 8-substituted purine arabinofuranosyl and ribofuranosyl nucleoside derivatives as potential inducers of the differentiation of the Friend erythroleukemia. AB - Several antimetabolites have been demonstrated to have the capacity to initiate differentiation in vitro of a variety of leukemic cell lines. To explore the structural requirements for this activity, a series of purine and 8-substituted purine arabinofuranosyl and ribofuranosyl nucleoside derivatives were synthesized and tested as inducers of the differentiation of Friend murine erythroleukemia cells. 9-(beta-D-Arabinofuranosyl)hypoxanthine and 6-(hydroxyamino)-9-(beta-D arabinofuranosyl)purine were effective inducers of maturation, producing 82% and 74% benzidine-positive cells, a measure of the number of cells synthesizing hemoglobin. 6-Mercapto-9-(beta-D-ribofuranosyl)purine and 6-(methylmercapto)-9 (beta-D-ribofuranosyl)purine and their corresponding beta-D-arabinofuranosyl derivatives were also effective initiators of maturation, causing approximately 50% of the cell population to assume a differentiated phenotype. PMID- 3862867 TI - Left atrial rupture secondary to blast injury. PMID- 3862868 TI - Hematogenous osteomyelitis of the tarsal navicular bone. PMID- 3862869 TI - Preoperative angiographic assessment of saphenous vein for arterial bypass surgery. PMID- 3862870 TI - Introduction of Salmonella typhi in the United States via travelers. PMID- 3862871 TI - Giant benign pleural fibroma with systemic arteriovenous shunting. PMID- 3862872 TI - Streptococcus bovis endocarditis and bowel neoplasm. PMID- 3862873 TI - Unusual pharyngeal perforation. PMID- 3862874 TI - Preoperative medical consultation and treatment--an anesthesiologist's view. PMID- 3862875 TI - Characterization of rat ribosomal DNA II. identification of the highly repetitive DNA in the 3' non-transcribed spacer. AB - The nucleotide sequence of one of the non-transcribed spacer subclones, p1.7, from the region 3' to rat 45 S pre-rRNA has been determined. Within 1612 base pairs, the fragment contains two distinct regions of highly repetitive DNA, one of which can serve as a site for initiation in vitro by RNA polymerase III. The first is the alternating purine-pyrimidine sequence (A-C)21. The second of these regions has 95% homology to the identifier sequence and served as the template for RNA polymerase III transcription in vitro. The in vitro polymerase III template is aligned in opposite polarity to the direction of transcription of 45 S rRNA. Located near the identifier sequence is a region that is 59% homologous to the type-II Alu sequences. It would seem, therefore, that members of more than one highly repetitive sequence family have accumulated in the non-transcribed spacers. These data also suggest that within the non-transcribed spacers these families have evolved (sequence variation) at different rates, until one of them, the Alu type-II-like element, may represent a new Alu type-II subfamily. PMID- 3862876 TI - Periodontics in private practice. PMID- 3862877 TI - Periodontal microbiology: an alternative view. PMID- 3862878 TI - Marsupialization revisited. PMID- 3862879 TI - [Clinical studies on excretion in biliary tract with the antibiotic cefotiam]. AB - Cefotiam (CTM) was administered through 1 hour intravenous drip infusion for the patients performed biliary tract surgery. The concentration of CTM in serum, gallbladder tissue and the excretion in bile of the choledochus were measured. Twenty-one patients performed cholecystectomy were followed the concentration of CTM in the gallbladder tissue and the results were studied with pharmacokinetic analysis. The simulation curve, which was described by computer system in two compartment open model, showed the maximal concentration of CTM in the serum was 60.3 micrograms/ml at 1 hour after infusion and that in the gallbladder tissue was 27.1 micrograms/g at 1.07 hours. The concentration of CTM in the gallbladder tissue was presumed to be in proportion to that of CTM in the serum. Six patients performed bile drainage were followed the concentration of CTM in bile of the choledochus for 6 hours after infusion. The maximal concentration was 215.2 +/- 62.7 micrograms/ml at 3 hours after injection, and the mean biliary recovery was 1.66 +/- 0.55% through 6 hours. Neither any side effects nor any abnormal values in the laboratory analysis of samples were observed for CTM. PMID- 3862880 TI - [Cefotiam concentration in exudates from the drainage of patients with acute peritonitis following intravenous administration]. AB - Cefotiam dihydrochloride (CTM) in a dose of 2 g was given by intravenous bolus injection to 15 patients operated upon for acute or subacute abdominal organs. They were included to 5 cases of acute localized peritonitis due to perforative appendicitis, 3 of diffuse peritonitis due to perforative duodenal ulcer, 1 of diffuse peritonitis with intestinal obstruction, 1 of perforative sigmoid colon cancer, 2 of gastric cancer or polyp with cholelithiasis, and 3 of cholangitis with cholecyst-choledocholithiasis. The materials of exudate from drain were taken at intervals by sterilized paper disc and determined by paper disc bioassay method with Proteus rettgeri ATCC 9250 or Proteus mirabilis ATCC 21100 as the test organisms to CTM concentrations. CTM concentrations in purulent exudate from drain of patients with acute peritonitis, they were increased quickly after intravenous bolus injection, and reached higher levels at early time after injection in cases 2 or 3 days after operation. CTM concentration in purulent exudate from drain was tended to increase in proportion to the severity of the inflammation. The CTM levels in infected exudate were higher than the MICs against clinically isolated organisms for a long time after administration. Therefore, CTM was very useful drug when used for chemotherapy of postoperative peritonitis. PMID- 3862881 TI - [Serum levels and sputum levels of cefmenoxime in respiratory tract infections]. AB - In 11 patients with respiratory tract infections, the concentrations of cefmenoxime (CMX) in serum and sputum after 1 hour intravenous administration of 2 g of CMX were investigated. The peak serum level of CMX was 102.2 +/- 11.4 micrograms/ml after 1 hour drip infusion, then declined and was 3.51 +/- 0.55 micrograms/ml after 5 hours. Sputum level of CMX was lower than serum level but it was able to cover enough for MIC of Haemophilus influenzae, Klebsiella pneumoniae, Escherichia coli, Streptococcus pneumoniae and the peak sputum level of CMX was 0.77 +/- 0.17 micrograms/g after from 2 hours to 4 hours. Among the 11 patients with respiratory tract infections, 2 patients showed excellent, 6 patients good, 3 patients poor results (isolated organisms of sputum were normal flora) and no side effects observed. PMID- 3862882 TI - [The concentration of cefmenoxime after intravenous drip infusion in digestive organs and exudates from abdominal and thoracic cavities in human]. AB - We investigated the concentrations of cefmenoxime (CMX) after administration of 2 g of CMX, in the tissues resected during operation 2 hours after the beginning of intravenous drip infusion, and in the exudates from abdominal or thoracic cavities in the postoperative period. The results were as follows: The highest tissue concentration of CMX was found in the liver (59.0 +/- 20.3 micrograms/g), and the lowest was in the pancreas (13.9 +/- 8.1 micrograms/g). The concentrations of CMX in the tissues were in order of liver much greater than colon = esophagus = stomach greater than pancreas. The peak concentration of CMX in exudate from thoracic cavity was 15.6 +/- 10.1 micrograms/ml, and was observed 2 hours after the beginning of intravenous drip infusion, later than that in serum. Furthermore, the concentration of the exudate was maintained to a reasonable extent for 5 hours. The concentrations of CMX in both tissues and exudates were enough to inhibit the growth of many kinds of bacteria isolated from abdominal infections. PMID- 3862884 TI - [The concentration of ceftizoxime in serum and lung tissues and prophylaxis of postoperative infections]. AB - There are few clinical reports about the concentration of ceftizoxime (CZX) in lung tissues. At present, clinically, we report the concentration of the drug in serum and lung tissues on 26 cases of chest disease and an effect of the drug on prophylaxis of postoperative pulmonary infections. Our results are the following; The peak concentration of CZX in serum is 54.7 micrograms/ml at 1 hour after starting drip infusion of CZX 1 g. The serum half-life of CZX (beta phase) is 2.07 hours. The concentration of CZX in lung tissues is from 43.6 to 78.7% of serum level. CZX is useful to prophylaxis of postoperative infections after thoracotomy, especially in case of administration of CZX 1 g just before operation. Eruption was found in 1 of 26 cases. However, no side effects of the drug are noticed in other 25 cases. PMID- 3862883 TI - [Pharmacokinetic study of cefmenoxime concerning its transfer into tissues]. AB - Cefmenoxime (1 g) was intravenously administered by one shot to investigate its pharmacokinetic profile with respect to transfer into the kidney, vesical wall and prostatic adenoma. The concentration of cefmenoxime in the kidney reached a peak of 403 micrograms/g at 0.17 hour after administration. The biological half life was 0.74 hour. In the vesical wall, the level of cefmenoxime reached a peak of 28 micrograms/g at 0.67 hour after administration. The half-life was 2.30 hours. The peak level of cefmenoxime in the prostatic adenoma was 22 micrograms/g at 0.39 hour after administration. The half-life was 2.90 hours. The concentrations of cefmenoxime in these urogenital tissues were higher than its MIC80 and MBC80 against various Gram-negative organisms. PMID- 3862885 TI - [Transfer of ceftizoxime to renal tissues]. AB - Serum and renal tissue concentrations of ceftizoxime (CZX) after intravenous dosing with 1 g were determined in 15 patients with renal disease. The highest serum concentration of CZX was 105 micrograms/ml 6 minutes after dosing and the lowest concentration was 10.5 micrograms/ml at 170 minutes. The highest renal tissue concentration was 155 micrograms/g and the lowest concentration was 7.46 micrograms/g. There were no correlation between the tissue concentrations and sampling time. Tissue to serum concentration ratios ranged from 0.28 to 5.73. These patients were divided into 3 groups; hydronephrosis, normal kidneys and renal atrophy according to pyelographic findings. Their renal tissue concentrations were compared with serum concentrations in each group. The tissue concentrations were lower than the serum concentrations in the first group, and were almost the same or higher in the other groups. CZX concentrations in the medulla and the cortex were determined in 5 patients; and were higher in the medulla in 4 of these patients. Urinary tract infection due to E. coli, K. pneumoniae, P. mirabilis, S. pyogenes or S. epidermidis was present in 5 of the 25 patients. Intravenous injection of 1 g of CZX provided therapeutically effective concentrations against these urinary tract infections. PMID- 3862886 TI - [How to determine the prophylactic effect on postoperative infections]. AB - With the cooperation of 13 medical institutions in the Tokyo area, the methods to determine the prophylactic effect on postoperative infections in gynecological surgery were evaluated. Two hundred and ninety-nine patients were enrolled for the study of postoperative infections, febrile morbidity and fever index following abdominal (275) and vaginal (24) hysterectomies. Prophylactic cefotiam (CTM) of 1 gram was intravenously administered twice a day postoperatively for 3 to 5 days. The rates of postoperative infections were 5.1% (14/275) in abdominal hysterectomy and 4.2% (1/24) in vaginal hysterectomy. The febrile morbidity (57.1% = 8/14) and fever index (52.3 +/- 41.1 degree hours) in the infection group were approximately about 4 times higher than those (12.3% = 32/261, and 15.6 +/- 13.7 degree hours, respectively) in the non-infection group. No significant differences were observed in age, body weight, height of patients, period of operation and blood loss between these 2 groups. These data suggested that febrile morbidity and fever index were able to indicate the prophylactic effect of antibiotics on patients undergoing abdominal and vaginal hysterectomies. PMID- 3862887 TI - [Diagnostic value of serum RNases in chronic myelocytic leukemia]. PMID- 3862888 TI - [Treatment of acute lymphoblastic leukemia in children: modified LSA2-L2 therapy]. PMID- 3862889 TI - [Gastrointestinal symptoms of aclacinomycin A in patients with adult acute nonlymphocytic leukemia--comparison of BH-AC-DMP therapy and BH-AC-AMP therapy]. PMID- 3862890 TI - [Leukocytosis induced by BH-AC administration--allergic reaction to Casteo oil HCO-60. A case report]. PMID- 3862891 TI - [Transient hypopituitarism in a case of acute lymphoblastic leukemia]. PMID- 3862892 TI - [Acute lymphoblastic leukemia bearing B cell differentiation antigens (Ia, B4), with abdominal tumor]. PMID- 3862893 TI - An imported case of human infection with Loa loa. PMID- 3862894 TI - Organization and neuraminidase susceptibility of sialic acid residues in human melanoma cell lines with different heterotransplantabilities in nude mice. AB - Quantitative analyses of sialic acid residues expressed at the surface of human melanoma cells have been performed on 6 cell lines differing in their ability to grow subcutaneously in nude mice. Whereas 3 of these cell lines showed low heterotransplantability (LT), 3 other cell lines showed high heterotransplantability (HT). It was found by several methodologic approaches that the 6 human melanoma cell lines varied significantly in their amount of sialic acid susceptible to Vibrio cholerae neuraminidase, but had similar amounts of total sialic acid residues. Cells in the LT group exhibited twice as much cell surface sialic acid residue susceptible to this enzyme as cells in the HT group. Specific fluorescent labeling of external cell surface sialic acid residues showed that the LT cells present a patch-like distribution of the label, whereas the HT cells are characterized by a more homogeneous distribution of the label. Thus the human melanoma cell lines could be distinguished not only by their heterotransplantability in nude mice but also by membrane properties, such as the topographic organization of their cell surface sialic acid residues. PMID- 3862895 TI - Proliferative and antigenic modifications in human epithelial cells in chronic atrophic gastritis. AB - For the study of both proliferative and antigenic changes in epithelial cells in a disease predisposing to gastric cancer, endoscopic biopsy specimens were analyzed following removal from individuals with chronic atrophic gastritis (CAG); comparisons were made with specimens from normal gastric mucosa. All subjects were from Narino, Colombia, the population of which has a high age adjusted incidence of gastric cancer (150/100,000 population) occurring mainly in gastric antrum. After pulse incubation of biopsy specimens with tritiated thymidine ([3H]dThd), microautoradiographic distributions of [3H]dThd-labeled cells in the epithelial lining of gastric pits were correlated with expression of serologically defined gamma-fetal antigen (FA) as a second marker. Measurements were done both in gastric corpus and in antrum for entire gastric pits and over multiple gastric pit compartments. Total numbers of cells per gastric pit column did not differ between the normal and the CAG specimens either in corpus or in antrum; however, both in corpus and in antrum mean numbers of [3H]dThd-labeled cells per gastric pit column and labeling index were almost twice as large for the CAG population (P less than .006). Labeling index differences also were significant over most gastric pit compartments (P less than .02). In antrum gamma FA-positive lesions had an expanded proliferative compartment with labeling indices significantly greater than those of antigen-negative lesions (P less than .02). This correlation did not extend to biopsy specimens obtained from corpus of stomach where the frequency of carcinoma is low. Findings indicate a hyperproliferative state in CAG compared to the proliferative state in normal gastric mucosa and, in gastric antrum, a further correlation with expression of gamma-FA in hyperproliferating cells. The two markers can be used to aid definition of the gastric mucosa in a disease associated with the development of gastric cancer and in prophylactic dietary intervention programs. PMID- 3862896 TI - Localization of radiolabeled monoclonal antibody in a human soft tissue sarcoma xenograft. AB - 125I-labeled monoclonal antibody 19-24 (mouse isotype IgG1) was evaluated for its potential usefulness in the clinical radioimmunodetection of sarcoma. The antibody reacts with a cell surface antigen preferentially expressed in many human soft tissue and bone sarcomas. Chromatographic and electrophoretic analyses indicated that the labeled preparation was relatively pure. Binding studies in vitro demonstrated that specificity for antigen was retained after iodination and indicated that the labeled antibody possessed an immunoreactivity in excess of 90% and a binding constant of 8.1 X 10(9) M-1. When administered to athymic NCr nu/nu mice bearing 1-cm diameter human fibrosarcoma HT-1080 xenografts, the labeled antibody preferentially localized in tumor deposits. Maximum tumor-to blood radioactivity ratios (2.2-3.4) were obtained 7 days after antibody injection. Specificity of the localization was confirmed with a control mouse IgG1 antibody and by using a nonreactive xenograft. Distinct tumor images were obtained by gamma camera without the use of subtraction techniques, demonstrating the possible clinical utility of the labeled antibody. PMID- 3862897 TI - Dietary determinants of gastric cancer in south Louisiana inhabitants. AB - In south Louisiana, 391 recently diagnosed gastric cancer patients and an equal number of controls were interviewed. Questions asked covered residential and occupational histories, environmental exposures, tobacco use, diet, alcohol consumption, and pertinent demographic characteristics. Elevated relative risks were found for use of tobacco and alcohol products. Diet was found to be the main determinant of gastric cancer risk in south Louisiana. Both dietary patterns and dietary risk factors differed for blacks and whites, although fruits as a group and dietary vitamin C were found to exert strong protective effects for both blacks and whites. Consumption of smoked foods and homemade or home-cured meats increased risk of gastric cancer for blacks but not for whites. The findings are discussed in the light of the prevailing etiologic hypotheses. PMID- 3862898 TI - Presurgical serum immunoglobulin concentrations and the prognosis of operable breast cancer in women. AB - Serum concentrations of IgG, IgA, IgM, IgE, and allergen-specific IgE were measured in presurgical serum samples from 400 women admitted to a multidisciplinary study of primary breast cancer. The relationships between the serum immunoglobulins and patient survival were analyzed with the use of a Cox proportional hazards linear model. After adjustment for TNM stage, tumor histopathologic grade, and estrogen receptor (E2R) status, lower IgM concentrations were associated with longer survival. Lower IgE concentrations were also associated with longer survival, but only in patients whose tumors were E2R positive. IgG and IgA were not related to survival. Serum IgM and IgE concentrations, allergen-specific IgE scores, and the tumor E2R status were combined to construct a three-level risk classification that was more prognostic than any of the individual components. Cox model analysis demonstrated that this combination of immunologic and hormonal variables provided significant new information beyond that obtained from TNM staging and histopathologic grading of the tumors (P = .01). This new information may be useful to physicians in advising patients with primary, operable breast cancer about the relative risks and benefits of adjuvant therapy and in designing clinical trials of adjuvant therapy. PMID- 3862899 TI - Risk of breast cancer to relatives of young breast cancer patients. AB - Breast cancer risk among sisters and mothers of a population-based series of 1,137 breast cancer patients diagnosed in Metropolitan Detroit before the age of 55 years was compared with risk to the same relatives of 1,001 age-matched, population-based controls. After adjusting for age of the relative, for age of the case or control, and for race, the odds ratio for breast cancer for women with affected sisters was 2.2; for women with affected daughters, 3.2; and for women with affected mothers and sisters, 9.9. Breast cancer in aunts had no independent influence on risk. Among white women, cumulative risk of breast cancer before the age of 50 years was approximately 1% for relatives of controls, 3% for sisters of older cases, but about 17% for women either with sisters diagnosed before the age of 40 years or with affected sisters and mothers. Sisters of the older patients had a 13% risk of breast cancer by 70 years of age, compared to 5% for sisters of controls. White women with affected mothers and sisters were at 50% risk by 65 years of age. This study identifies the criteria for women who could receive particular benefit from screening for breast cancer. PMID- 3862900 TI - Splenotoxicity associated with splenic sarcomas in rats fed high doses of D & C Red No. 9 or aniline hydrochloride. AB - A histopathologic review of F344 rat spleens from the National Toxicology Program National Cancer Institute bioassays of barium salt of 5-chloro-2-(2-hydroxy-1 naphthalenyl)-azo-4-methylbenzenesulfonic acid [(D & C Red No. 9) CAS: 516-00-21] and aniline HCI (CAS: 142-04-1) was conducted to assess splenotoxic changes associated with splenic sarcomas induced by these aromatic amines. Four splenic changes--fatty metamorphosis (FM), splenic fibrosis (FIB), capsule hyperplasia (CH), and hemorrhage--were markedly increased in incidence and severity in males treated with high doses of either D & C Red No. 9 or aniline HCI. Females treated with high doses of either of these compounds showed similar but less severe changes. FIB and FM showed strong group correlations with tumor incidence (r greater than or equal to 0.87). All groups that demonstrated FM also demonstrated splenic sarcomas; groups without the FM lesions did not exhibit splenic tumors. The morphologic similarity of the FIB and CH lesions to the induced splenic sarcomas suggests that these lesions are preneoplastic. Moreover, the treatment related splenic lesions appear to be precursors of the induced splenic sarcomas. Carcinogenicity studies with serial sacrifices at varying intervals will be required for experimental verification of these conclusions. A schema, based on the findings of the study, suggests a hypothetical pathway for the progression of the treatment-related splenic lesions from onset to tumor formation. PMID- 3862901 TI - Metastatic dissemination of B16 melanoma: pattern and sequence of metastasis. AB - The progressive metastatic spread from subcutaneous transplants of two subpopulations of the mouse B16 melanoma, slow-growing clone G3.5 and fast growing clone G3.12, was examined during tumor growth in C57BL/6 mice and after surgical excision of tumors of various sizes. In addition to enumeration of visible and lethal or potentially lethal ("clinically relevant") metastases, the occurrence of visibly undetectable proliferating (occult) or nonproliferating (dormant) micrometastases was assessed by implanting lymph nodes and organs subcutaneously into normal mice and monitoring for resulting tumor growth. Occult or dormant metastases were disseminated initially to the lungs from G3.5 tumors of 3-4 mm in mean geometric diameter (MGD) and G3.12 tumors of 6-7 mm in MGD. The ipsilateral axillary lymph node (IALN), the regional draining lymph node for these tumors, received metastases after the lungs, initially from 10 to 12-mm tumors. Subsequently, occult or dormant and visible metastases first appeared in systemic organs and lymph nodes (kidneys, adrenal glands, ovaries, and contralateral axillary lymph node) at tumor sizes of about 26 mm in MGD. Systemic metastases occurred only in mice with large and numerous lung metastases and did not depend on the continuing presence of the subcutaneous tumor or on the presence of IALN metastases, which indicated that established lung metastases were a generalizing site from which systemic metastatic spread initiated. After tumor excision, death generally resulted from extensive lung metastasis. Occasional lethal or clinically relevant metastases were also observed in the IALN, kidneys, adrenal glands, ovaries, brain, eyes, and urinary bladder; liver involvement was evident exclusively as occult or dormant micrometastases. Terminal metastatic patterns of these B16 melanoma transplants were as widespread and indiscriminate as those of malignant melanoma in humans. PMID- 3862902 TI - Immunologic control of a retrovirus-associated murine adenocarcinoma. VI. Augmentation of antibody-dependent killing following quantitative and qualitative changes in host peritoneal cells. AB - Attempts were made to augment the antibody-dependent killing of the ascitic AD755a tumor in vivo to protect C57BL/6J mice against the outgrowth of larger tumor burdens. The lethal dose for this tumor is less than 100 cells, and antibodies contained in a hyperimmune antitumor serum (HIS) were found to suppress the outgrowth of a maximum of about 5 X 10(5) cells. Thioglycollate injected ip increased the number of peritoneal macrophages, potential effectors for antibody-dependent cell-mediated cytotoxicity (ADCC), by tenfold to fortyfold and raised the maximum treatable tumor challenge (MTTC) to about 4 X 10(6) cells. By comparison, ip injection of Corynebacterium parvum increased the total peritoneal cell population by only twofold but raised the MTTC to about 20 X 10(6) cells. Neither agent alone had an effect on long-term survival, even at very low tumor inocula (1 X 10(3) cells). The protective HIS is known to contain tumor-binding antibodies in each of the IgG1, IgG2A, and IgG2B isotype fractions. Although the IgG2A fraction is far superior in vivo in the suppression of tumor outgrowth, the IgG2A fraction was also found to be most effective in combination with thioglycollate treatment in agreement with the observed preference of thioglycollate-elicited macrophages for this isotype in in vitro killing assays. In contrast following C. parvum treatment, all three isoptype fractions were equally suppressive to tumor outgrowth. A second major change following C. parvum treatment was that tumor cells precoated in vitro with antibodies were effectively eliminated in vivo. The same antibody-coated cells administered to thioglycollate-treated or unmanipulated animals were uniformly lethal even at much lower tumor doses. Taken together these results suggested a major qualitative change in the antibody-dependent tumor-killing process following C. parvum treatment. This change was most likely due to the C. parvum activation of highly lytic effector cells for ADCC, the identity of which was examined in an accompanying manuscript. PMID- 3862903 TI - Immunologic control of a retrovirus-associated murine adenocarcinoma. VII. Tumor cell destruction by macrophages and IgG2A. AB - The mechanism by which IgG2A from a syngeneic antitumor hyperimmune serum mediates destruction of target cells in the presence of thioglycollate-elicited peritoneal macrophages was investigated by using an in vitro assay system. Labeled tumor cells were found to exhibit a biphasic pattern of binding to the effector cells; this binding pattern was dependent on the presence of specific antibody. The initial binding phase produced no apparent changes in the target cell population. Target cells coated with specific antibody exhibited a similar early binding phase, but excess free antibody was required for the subsequent binding phase and its associated release of radiolabel and cell destruction. Several features of this process observed distinguished it from more conventional forms of antibody-dependent cell-mediated cytoxicity. These included 1) the preference for antibodies of the IgG2A isotype, 2) the association of cell destruction with the release of nuclear but not cytoplasmic label, and 3) the requirement of excess free antibody for target cell killing. PMID- 3862904 TI - Immunologic control of a retrovirus-associated murine adenocarcinoma. VIII. Corynebacterium parvum-activated natural killer cells as potent antibody dependent cell-mediated cytotoxicity effectors. AB - The antibody-dependent lytic activity of Corynebacterium parvum-induced peritoneal exudate cells was examined in vitro by utilizing AD755a tumor targets and a homologous anti-AD755a hyperimmune serum. Maximum antibody-dependent cell mediated cytolysis (ADCC) of tumor targets was achieved within 4 hours of incubation. ADCC activity was found primarily in the plastic nonadherent cell population and was greatly enriched following removal of phagocytic cells by carbonyl iron. Phenotypically, the cells active in short-term ADCC were Qa-5+, ASGM-1+, Thy 1.2+, and NK 1.1+ and were unaffected by treatment with Lyt 1.2, Lyt 2.2, MAC-1, or I-Ab antibodies plus complement. Cells active in antibody independent lysis of AD755a targets were phenotypically identical to antibody dependent effectors. Although indicative of a natural killer (NK) cell phenotype, C. parvum-induced effectors differed from "spontaneous" splenic NK cells in their relative sensitivity to anti-Thy 1.2 as well as to anti-NK 1.1 treatment. Unlike the IgG2a-dependent lysis of AD755a-derived cells by inflammatory macrophages, all IgG isotypes of antiAD755a serum were equally effective in ADCC mediated by C. parvum NK cells. Finally, treatment of C. parvum-inoculated animals with anti ASGM-1 serum eliminated in vitro NK activity and abrogated the in vivo therapeutic effects of hyperimmune serum. These findings, together with other correlations detailed herein, strongly suggested that C. parvum-activated NK cells appeared to represent a unique subset of NK cells that can serve as potent effectors in the antibody-dependent killing of AD755a tumor cells. PMID- 3862905 TI - Ochratoxin A carcinogenesis in the (C57BL/6J X C3H)F1 mouse. AB - The potential carcinogenic effects of the mycotoxin ochratoxin A [(OA); CAS: 303 47-9] were assessed in a 24-month feeding study in male and female (C57BL/6J X C3H)F1 (B6C3F1) mice. The mice were assigned to 3 groups of 50 males and 50 females each; group 1 mice were the controls, group 2 mice were fed 1 ppm OA, and group 3 mice were fed 40 ppm OA. Renal neoplasms, both carcinomas and adenomas, were found only in male mice of the 40-ppm dose group. Fourteen of 49 animals that survived at least 20 months had neoplasms morphologically consistent with renal carcinoma. Renal adenomas were present in some of these mice and in other 40-ppm-group males, making a total of 26 mice with renal adenomas. All male mice of the 40-ppm dose group had nephropathy characterized by varying degrees of renal tubular dilation, attenuation and hyperplasia of lining epithelium, and proliferation of regenerative tubules. Females of the 40-ppm dose group had similar but less severe renal changes but no carcinomas or adenomas. Compound related renal lesions were absent in the 1-ppm dose group. The incidence of hepatocellular neoplasms was slightly increased in male and female mice fed diets containing OA. These results indicate that OA is a renal carcinogen in male B6C3F1 mice and a hepatic carcinogen in female mice of this strain. PMID- 3862906 TI - Relation between development of leukemia and duration of N-nitroso-N-ethylurea treatment in DONRYU rats. AB - N-Nitroso-N-ethylurea (NEU; CAS: 759-73-9) is a strong leukemogen that induces erythroblastic leukemia in inbred DONRYU rats. In the present experiments, relationships between development of leukemia, duration of NEU treatment, and sequential changes in the hematopoietic organs during carcinogen administration were examined. In experiment 1, groups of rats were given a 400-ppm NEU solution for 0, 2, 4, 6, 8, or 10 weeks, and the resultant incidence of leukemias was 0, 26, 40, 75, 95, and 100%, respectively. Of the various types of leukemia, the erythroblastic type was observed in 0, 0, 20, 40, 95, and 90% of rats, respectively. The average latent period showed an inverse correlation with the duration of NEU treatment. In experiment 2 the animals were divided into carcinogen-treated and control groups, and rats were sacrificed periodically for histopathologic examination. In the experimental group, the bone marrow became hypoplastic soon after commencement of NEU treatment and at the 6th week became severely aplastic, thereafter recovering slightly. At the 10th week, 2 rats out of 5 examined were leukemic. Relationships between incidence of leukemia, duration of NEU treatment, and sequential changes of the bone marrow during carcinogen administration are discussed. PMID- 3862907 TI - Differential sensitivity of metastatic versus nonmetastatic mammary tumor cells to macrophage-mediated cytostasis. AB - Sensitivity to macrophage-mediated cytostasis was determined with 4 tumor cell lines derived from a single, spontaneously arising mouse mammary tumor. Cytostasis was measured in a 48-hour [3H]thymidine-incorporation assay with the use of maleic vinyl ether (pyran) fraction 2 (MVE-2)-elicited peritoneal macrophages as effector cells. Metastatic tumor lines 66 and 410.4 were less sensitive than nonmetastatic lines 67 and 168. Pretreatment of tumor cells with indomethacin for 24 hours before assay increased the cytostatic sensitivity of the metastatic tumor lines but did not affect that of the nonmetastatic tumor lines. Addition of 100 ng lipopolysaccharide (LPS)/ml to the assay mixture of MVE 2-primed macrophages and tumor cells or pretreatment of macrophages with LPS markedly lessened the differences in cytostatic sensitivity among the metastatic and nonmetastatic lines. Pretreatment of tumor cells with indomethacin plus addition of LPS during the effector phase of the assay completely abrogated differences in sensitivity. These results suggest that differences in sensitivity of metastatic versus nonmetastatic tumor cells to macrophage cytostasis are due to both tumor cell (prostaglandin) and effector cell (activation state) factors. PMID- 3862908 TI - Murine lung carcinogenesis following exposure to ambient ozone concentrations. AB - Inbred strain A/J mice, responsive to the chemical induction of pulmonary adenomas, were used to assess any of several roles that the photochemical air pollutant ozone might play in lung carcinogenesis. In separate experiments, animals were exposed to two concentrations of ozone (0.31 +/- 0.01 and 0.50 +/- 0.02 ppm) intermittently for a 6-month period, to evaluate the potential of ozone to act as either a pulmonary carcinogen, a tumor promoter, or an inhalant capable of increasing lung tumor yield when exposure was in conjunction with a pulmonary carcinogen, urethane. Statistical analyses of results indicated that ozone exposure at both concentrations caused an increase in lung tumor number relative to clean air controls, but that ozone was not an effective tumor promoter under the conditions of our protocol. When ozone exposure immediately preceded treatment with urethane (CAS: 51-79-6), animals were at increased risk for the development of lung adenomas. PMID- 3862909 TI - Effect of different levels of dietary trans fat or corn oil on azoxymethane induced colon carcinogenesis in F344 rats. AB - The effect of various levels of dietary corn oil or trans fat on azoxymethane (AOM; CAS: 25843-45-2)-induced carcinogenesis was investigated in female F344 rats fed the AIN-76 semipurified diets. Starting at 5 weeks of age, groups of rats were fed the low-fat diet containing 5% corn oil (designated as low-fat control diet). At 7 weeks of age, all animals except the vehicle-treated controls, were given sc injections of AOM (15 mg/kg body wt, once weekly) for 3 weeks. After 1 week, groups of animals were transferred to semipurified diets containing 13.6% corn oil and 23.5% corn oil or high-fat diets containing 5.9% corn oil plus 5.9% trans fat plus 11.8% Oleinate (low trans fat), 5.9% corn oil plus 11.8% trans fat plus 5.9% Oleinate (intermediate trans fat), and 5.9% corn oil plus 17.6% trans fat (high trans fat). Fecal bile acids were measured in vehicle-treated rats. All animals were necropsied 34 weeks after the last AOM injection. The animals fed the 23.5% corn oil diet had a higher incidence of colon tumors than did those in the groups fed the 5 and 13.6% corn oil diets. There was no difference in colon tumor incidence between the 5 and 13.6% corn oil diet groups. The animals fed the high-fat diets containing low trans fat, intermediate trans fat, and high trans fat developed significantly fewer liver and colon tumors and more small intestinal tumors than did the rats fed 23.5% corn oil diet. The excretion of fecal deoxycholic acid, lithocholic acid, and 12 ketolithocholic acid was higher in animals fed the 23.5% corn oil diet compared to the excretion in animals fed the other diets. PMID- 3862910 TI - The emergency preparedness of general dentists in Kentucky. PMID- 3862911 TI - [Results of therapy with the Ommaya reservoir (1)]. PMID- 3862912 TI - [Increased rate of sister chromatid exchange following therapy of acute lymphoblastic leukemias and non-Hodgkin lymphomas in childhood]. AB - Sister chromatid exchanges rates (SCE) were studied in peripheral blood lymphocytes of 10 patients with acute lymphoblastic leukaemia (ALL) or leukaemic transformed non-Hodgkin-lymphomas (NHL) and in lymphocytes of 10 healthy juvenile donors (control). Following treatment the patient group has been in continuous complete remission for 11 months on the average. In the number of SCE's significant differences were found: 10,90/metaphases in the patients versus 7,56/metaphases in the controls. These results significantly show a long time influence of the treatment on the SCE rates, possibly inducing chromosome aberrations. PMID- 3862913 TI - [Genetics of Crohn disease: study of the HLA association in 169 patients]. AB - Histocompatibility (HLA) antigen phenotypes have been studied in 169 patients with Crohn's disease. The following results could bei shown: HLA-Aw33, -B45 and Cw3 showed a positive association and HLA-A26, -DR3 and -DRw8 a negative association with Crohn's disease compared to healthy controls. However, when the p-values were corrected by multiplying them by the number of determined antigens per gen-locus, the differences were not significant. Patients with a late onset of the disease (greater than 25 years) showed a statistical significant negative association with HLA-DR3. Numerous studies revealed no significant association between Crohn's disease and HLA-antigens except Smolen et al. (HLA-B12). The significant association of Crohn's disease and HLA-B12 reported by Smolen et al. could be caused by an increased frequency of HLA-B45 as we found in our patients. PMID- 3862915 TI - [Low-molecular lymphopeptides in the blood serum of patients with diffuse disease of the connective tissue as a risk factor in the development lymphoblastic leukemia]. PMID- 3862914 TI - [Characteristics of the "asthmatic triad" depending on the forms of bronchial asthma]. PMID- 3862916 TI - [Stages in the formation of various atypical forms of acute leukemia: hematopoietic dysplasia--preleukemia--leukemia]. PMID- 3862917 TI - Mammography: why, when and how. PMID- 3862918 TI - Relief of superior vena cava syndrome with spiral vein bypass grafting. PMID- 3862919 TI - Bronchogenic carcinoma presenting as benign esophageal disease. PMID- 3862920 TI - Biliary dyskinesia: diagnosis by common bile duct manometry and treatment by endoscopic sphincterotomy. PMID- 3862921 TI - Acute lymphoblastic leukemia: determinants of response to therapy. PMID- 3862922 TI - Mixed megakaryocytic-granulocytic differentiation during diffusion chamber culture of peripheral blast cells from the blast crisis of chronic myelocytic leukemia. AB - Morphologically and cytochemically undifferentiated peripheral blast cells from three patients in blast crisis of Ph'-positive chronic myelocytic leukemia were analysed morphologically, immunologically and cytogenetically prior to and during in-vivo diffusion chamber culture (DC) to investigate their differentiation capacity. In two patients immunological markers characteristic of the megakaryocytic lineage were found on the original cells, but lineage-specific differentiation markers were absent on the blast cells of the third patient. During DC culture multilineage differentiation capacity could be demonstrated immunologically and morphologically in all three patients with expression of megakaryocytic and granulocytic markers as well as terminal differentiation along these lineages. Cytogenetic analysis prior to and during DC culture provided evidence that the cells differentiating in culture were derived from the blast crisis clones and that the event leading to blast crisis might have occurred in a pluripotent precursor cell which retained its differentiation capacity along several lineages. PMID- 3862923 TI - Effects of chemotherapy on bone marrow stroma in mice with acute myelogenous leukemia. Correlation with CFU-C and CFU-D. AB - This study describes changes in bone marrow stroma in murine acute myelogenous leukemia (AML). The AML was induced in C57B1 mice by intravenous (i.v.) transfusion of C4198 myelogenous leukemic cells. In untreated leukemic mice, the colony-forming unit fibroblasts (CFU-F) were severely inhibited. In leukemic mice treated by three chemotherapy protocols of cytosine-arabinoside (Ara-C) and adriamycin there was a 200% increase in the life span as compared to untreated leukemic animals and marked reduction of marrow leukemic load. In these mice the stromal inhibition was temporarily relieved, expressed by peaks of CFU-F2-3 days following each protocol. In between the peaks, CFU-F decreased to subnormal levels, remaining low to the end of the disease. In normal mice administered a similar chemotherapy regimen, there were peaks of CFU-F activation after each protocol and normal levels in between the peaks. Granulocyte/macrophage progenitors (CFU-C) of leukemic-treated and normal-treated mice showed increased levels following each chemotherapy protocol. Whereas CFU-C decreased below normal levels in leukemic mice towards the end of the disease, the level of these progenitors remained high in normal mice receiving Ara-C and adriamycin. Colony forming units in diffusion chamber (CFU-D) showed mild fluctuations in both leukemic and normal mice receiving three protocols of Ara-C and adriamycin. It is possible that despite treatment, the bone marrow stroma in leukemia becomes irreversibly deficient towards the end of the disease and cannot support the residual normal hematopoiesis. PMID- 3862924 TI - Characterization of differentiation-inducer-resistant HL-60 cells. AB - Sub-lines of the cultured human promyelocytic leukemia cell line HL-60 were individually selected for their ability to sustain exponential growth in the presence of 3 structurally-unrelated inducers of granulocytic differentiation - retinoic acid (RA), dimethylsulfoxide (DMSO), and 6-thioguanine (6TG). Selections were made by step-wise augmentation to final drug concentrations of 10(-3)mM RA, 169mM (1.2%) DMSO and 0.12mM (20 micrograms ml-1) 6TG. In addition to growth resistance, cells in each sub-line displayed variable cytodifferentiation resistance to each of the 3 selective agents, which was quantitated as the ratio of the concentration of drug required to induce differentiation in 50% of the cells in each resistant sub-line versus comparably-passaged wild-type HL-60 cells. The levels of resistance/cross-resistance were as follows: RA-resistant (res) sub-line greater than 2700-fold to RA, 1.3-fold to DMSO and greater than 1.5-fold to hypoxanthine (HXN; the noncytotoxic purine base inducer analogue of 6TG); DMSO-res sub-line 2.5-fold to DMSO, 137-fold to RA and greater than 1.5 fold to HXN; and 6TG-res sub-line greater than 1.5-fold to HXN, 9-fold to RA and 1.6-fold to DMSO. These sub-lines were not cross-resistant to sodium butyrate (NaBut), a monocyte inducer, or to 12-0-tetradecanoylphorbol 13-acetate (TPA), a macrophage inducer. HL-60 sub-lines selected by exposure to a single high concentration of 5-bromo-2'-deoxyuridine (BUdR; 3.3 X 10(-2)mM) or oubain (Ou; 5 X 10(-3)mM) were not or were slightly cross-resistant to either granulocyte or monocyte inducers. Although some variations in line/sub-line phenotype were observed, this was minor compared to the quantitative variations in response to individual inducing agents. The RA-res and 6TG-res sub-lines contained numerous double minute chromosomes (indicators of amplified genes) which were either absent or present in much smaller numbers in the parental wild-type cells or in the other drug-resistant sub-lines. There was little change or a decrease in the amplification level of the known amplified oncogene c-myc in the various drug resistant sub-lines compared to wild-type HL-60 cells. These results (a) confirm that the neutrophilic granulocytic and monocytic/macrophagic differentiation programs in HL-60 cells are mechanistically different and separable; (b) suggest that both agent-specific and common quantitative alterations contribute to the mechanism(s) for resistance to granulocyte differentiation; and (c) suggest that the latter quantitative defects could be related to amplification of genes other than c-myc. PMID- 3862925 TI - [Osteoma of the temporal bone as a rare differential diagnosis of a retroauricular tumor]. AB - Extracanalicular osteomas of the temporal bone represent a rare differential diagnosis of osseous tumours in the ear region in contrast to the common finding of exostoses of the external auditory canal. Basing on a report on a retroauricular osteoma of the squama of the temporal bone treated in the authors' ENT clinic, the morphological and clinical characteristics of this tumour are discussed. PMID- 3862926 TI - Role of prostanoids and lipid peroxides as mediators of the 12-O tetradecanoylphorbol-13-acetate effect on cell growth. AB - Confluent cultures of guinea pig smooth muscle cells (SMC) or human fibroblasts (HNF) were treated with 12-tetradecanoylphorbol-13-acetate (TPA). Prostanoid levels were measured by the radioimmunoassay of 6-keto-PGF1 alpha and PGE2, and lipid peroxides were measured by the thiobarbituric acid test for malondialdehyde (MDA). Cells were seeded at low densities, and growth was calculated both from the cell count (Coulter Counter) and the colony number (image analysis). When confluent SMC and HNF were incubated in media alone, 6-keto-PGF1 alpha levels were a function of the TPA concentration, increasing to a maximum at 10(-8) M TPA and then decreasing at higher TPC concentrations. When confluent SMC and HNF were incubated in media containing exogenous arachidonic acid, 6-keto-PGF1 alpha levels again increased to a maximum at 10(-8) M TPA but decreased at higher TPA concentrations only with SMC. The increase in 6-keto-PGF1 alpha levels was much greater in HNF (1310%) than SMC (680%). SMC synthesized similar amounts of 6-keto PGF1 alpha and PGE2, and the stimulatory effect of TPA was similar with 6-keto PGF1 alpha and PGE2. Indomethacin (IM) blocked prostanoid synthesis at all TPA concentrations. TPA did not have a significant effect on MDA levels in either cell line. The lipid antioxidants alpha-tocopherol and alpha-tocopherylquinone blocked lipid peroxidation without affecting the stimulation of prostanoid synthesis with TPA. Cell number decreased to a minimum at 10(-8) M TPA in both cell lines. The decrease in cell number was much greater in HNF (72%) than SMC (30%). SMC colony number decreased at 10(-8) TPA and then increased at 10(-6) M TPA. IM did not block the TPA effect on cell number in either cell line.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3862927 TI - 17 beta-Hydroxysteroid oxidoreductase: a ubiquitous enzyme. Interconversion of estrone and estradiol-17 beta in BALB/c mouse tissues. AB - A survey was conducted to define the sites of 17 beta-hydroxysteroid oxidoreductase activity in organs and tissues of male and female BALB/c mice, as well as the favored direction of the oxidoreductase reaction in intact tissues. The enzyme activity was assayed by use of radiolabeled estrone and estradiol-17 beta as substrates. Estrone formation from estradiol-17 beta was demonstrated in all tissues. The formation of estradiol-17 beta from estrone was demonstrated in most tissues, however, it was barely detected or was undetectable in the glandular stomach, small intestine, cecum, and large intestine. Thus, 17 beta hydroxysteroid oxidoreductase activity is expressed in all BALB/c mouse organs and tissues. Approximately two-thirds of the tissues and organs examined, including those of the reproductive tracts, favored the conversion of estrone to estradiol-17 beta rather than the reverse reaction. The results of this study, however, represent qualitative estimates of 17 beta-hydroxysteroid oxidoreductase activity in BALB/c mouse tissues that are uncorrected for conversion to hydroxylated metabolites. These in vitro findings suggest that the 17 beta hydroxysteroid oxidoreductase catalyzed reduction of estrone may contribute to the maintenance of physiologic levels of estradiol-17 beta in estrogen responsive tissues. PMID- 3862928 TI - Polylysine-drug conjugates. PMID- 3862929 TI - Mutagenic and error-free DNA repair in Streptomyces. AB - Two mutants of Streptomyces fradiae defective in DNA repair have been characterized for their responses to the mutagenic and lethal effects of several chemical mutagens and ultraviolet (UV) light. S. fradiae JS2 (mcr-2) was more sensitive than wild type to agents which produce bulky lesions resulting in large distortions of the double helix [i.e. UV-light, 4-nitroquinoline-1-oxide (NQO), and mitomycin C (MC)] but not to agents which produce small lesions [i.e. hydroxylamine (HA), methyl methanesulfonate (MMS), ethyl methanesulfonate (EMS) and N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)]. JS2 expressed a much higher frequency of mutagenesis induced by UV-light at low doses and thus appeared to be defective in an error-free excision repair pathway for bulky lesions analogous to the uvr ABC pathway of Escherichia coli. S. fradiae JS4 (mcr-4) was defective in repair of damage by most agents which produce small or bulky lesions (i.e., HA, NQO, MMS, MNNG, MC, and UV, but not EMS). JS4 was slightly hypermutable by EMS and MMS but showed reduced mutagenesis by NQO and HA. This unusual phenotype suggests that the mcr-4+ protein plays some role in error-prone repair in S. fradiae. PMID- 3862930 TI - Methylation of 16S ribosomal RNA and resistance to aminoglycoside antibiotics in clones of Streptomyces lividans carrying DNA from Streptomyces tenjimariensis. AB - A single gene from Streptomyces tenjimariensis, conferring resistance to kanamycin, apramycin and sisomicin, has been cloned in Streptomyces lividans. The mechanism of resistance involves methylation of 16S RNA in the 30S ribosomal subunit. PMID- 3862931 TI - Regional assignment of the genes for TK1, GALK, ALDC, and ESD on chromosome 8 in the American mink by chromosome-mediated gene transfer. AB - A panel of clones of mink-Chinese hamster somatic cell hybrids was analysed to obtain data for assigning the genes for thymidine kinase-1 (TK1), galactokinase (GALK), subunit C of aldolase (ALDC), and esterase D (ESD) to specific mink chromosomes. The results demonstrate that the genes for TK1, GALK, ALDC and ESD are syntenic and located on mink chromosome 8. Prometaphase analysis of transformed mouse cells obtained by transfer of mink genes by means of metaphase chromosomes demonstrated the presence of mink chromosome 8 fragments of different sizes in some of the independent transformants. Segregation analysis of these fragments and mink TK1, GALK, ALDC and ESD allowed us to assign the genes for TK1 and GALK to 8p24, ALDC to pter-8p25, and ESD to 8q24-8qter. PMID- 3862932 TI - Comparative studies on the structural gene for the ribosomal protein S1 in ten bacterial species. AB - By applying the Southern blot technique we compared the structural gene rpsA for ribosomal protein S1 and its preceding sequence from Escherichia coli with nine other bacterial species. We found high homology among the structural genes of E. coli and other gram-negative but not gram-positive bacteria. In contrast, the regulatory sequence preceding the structural gene was not highly conserved among the organisms studied. Cloning and DNA sequence analysis of a 1.2 kb fragment coding for most of the structural gene for S1 from Providencia localized some strongly conserved parts of the DNA sequence, despite the fact that the codon usage showed considerable divergence from that of E. coli. PMID- 3862933 TI - Preferential expression of the maternally inherited X-linked phosphoglycerate kinase allele in human erythrocytes. AB - The stability of allelic gene expression of X-linked phosphoglycerate kinase was studied in seven carriers of a rare genetic variant named PGK Munchen. The enzymatic activities in erythrocytes of five heterozygous females and three hemizygous males were determined repeatedly over a period of 10 years (1975-1984) and shown to remain constant. As the phosphoglycerate kinase activity is lower in cells expressing the PGK Munchen allele, the ratio of the two cell types in all heterozygous females of the PGK Munchen kindred could be calculated from the PGK activity and from the known allozyme activities in erythrocytes of homozygous wild type or hemizygous PGK Munchen carriers. Since the maternal or paternal origin of both alleles is known from the pedigree, the quantitative expression of the maternally derived allozyme in heterozygous women could be determined. In heterozygous carriers the cell pool expressing the maternally inherited allele was significantly increased, independently, of the PGK allele linked to the maternal X chromosome (P less than 0.001). Our data show that inactivation of one of the two X chromosomes in human female erythropoietic stem cell precursors may be non-random, at least in the kindred and cell populations described here. The results are discussed in the context of random X chromosome inactivation (Lyon hypothesis). PMID- 3862934 TI - Abnormal visual-evoked potentials in leukemic children after cranial radiation. AB - Visual-evoked potentials (VEPs) were studied in 55 asymptomatic children with leukemia or solid tumors in remission in order to detect subclinical demyelination of the optic pathway after CNS prophylaxis. In group I (11 patients with ALL studied prospectively), VEP latency was increased in ten after cranial radiation (CR) as compared with previous values. Group II (18 patients with ALL in maintenance) and group III (16 patients with ALL off therapy) were studied retrospectively and VEP latency was found above normal limits in 33 and 31%, respectively. In group IV (four patients with solid tumors and six with leukemia, all of whom received no CR), VEP latency was normal despite periodical intrathecal methotrexate administrations to five of them. We conclude that CR determines a slowing of conduction on VEP test, probably due to demyelination of the optic pathway, in a high proportion of patients. The future clinical significance of these findings must be established throughout a prolonged follow up period. PMID- 3862935 TI - Risk factors in long-term sequelae of central nervous system prophylaxis in successfully treated children with acute lymphocytic leukemia. AB - Seventy-two successfully treated patients with acute lymphocytic leukemia, all in first complete remission and all off therapy, who had received CNS prophylaxis (radiotherapy, 2,400 rad, plus intrathecal methotrexate), were studied by computed tomography (CT) of the brain, EEGs, and neurologic evaluations 3 to 9 years after the end of prophylaxis. Thirty-five patients showed CT brain scan abnormalities: intracranial calcifications (twelve); widening of the subarachnoid spaces (eight); isolated dilatation of ventricular spaces (three) and with frontal periventricular hypodensity (two); dilatation of ventricular and subarachnoid spaces (nine); and a hypodense area (one). Only 17 patients showed aspecific EEG abnormalities which were never linked to CT scan findings. None of our patients presented major motor deficits at the neurologic examination. A stepwise logistic regression technique showed that age less than 5 years at the time of prophylaxis was the most important risk factor (p = 0.008) of CT brain scan abnormalities followed by neurets (p = 0.037) and sex (p = 0.10). Furthermore, the multivariate analysis pointed out that the interactions between these variables were not significant and the effects were only of the first order. PMID- 3862936 TI - Acute cytoreduction techniques in the early treatment of hyperleukocytosis associated with childhood hematologic malignancies. AB - Early and effective cytoreduction for high peripheral white blood cell counts in pediatric patients with acute leukemia may be helpful in preventing complications secondary to hyperviscosity. It also may be a useful adjunct to systemic chemotherapy. As an alternative to automated apheresis for this purpose, manual exchange transfusion is efficacious and does not require hemapheresis instrumentation and disposables and the related special staff. Two patients, a neonate with acute myeloblastic leukemia and a white blood cell count of 422.2 k/microliter as well as a 2 1/2-year-old with an admission diagnosis of acute promyelocytic leukemia and a white blood cell count of 617.4 k/microliter, underwent manual exchange hemotherapy for acute cytoreduction. The procedures were tolerated well, and significant leukocyte removal was achieved, with the respective leukocyte reductions being 81.1 and 68.7%. The techniques available for pediatric cytoreduction are compared, with emphasis on their efficiency and safety and appropriateness for very small children. PMID- 3862937 TI - Leukemic iris infiltration as the only site of relapse in a child with acute lymphoblastic leukemia: temporary remission with high-dose chemotherapy. AB - A 12-year-old Caucasian boy developed leukemic hyphema with iris infiltration as the only relapse site during the third complete remission of his acute lymphoblastic leukemia. With high-dose methotrexate, high-dose cytosine arabinoside plus teniposide, and a 5-week course of vincristine, prednisolone, and L-asparaginase, a complete remission could be achieved. Maintenance treatment was reinstituted for 1 year. However, after stopping the treatment, the iris infiltrate reappeared, and this time the eye was irradiated after chemotherapeutic reinduction. Seven months later, the boy remains in complete remission. The pathogenesis of leukemic iris infiltration is discussed briefly. PMID- 3862938 TI - Infantile lymphoblastic leukemia with t(4;11) and septate uterus, double cervix, and double vagina: case report and review of the literature. AB - Translocation between chromosomes 4 and 11 has been associated with an aggressive subtype of acute lymphoblastic leukemia. To date, 32 cases have been reported, 12 of which have been in infants. We report the 13th infantile case and the first associated with a somatic abnormality (septate uterus with double cervix and double vagina). PMID- 3862939 TI - [Prolymphocytic leukemia. Case report]. PMID- 3862940 TI - [Methods of administering fluoride products. A clinico-statistical study]. PMID- 3862941 TI - [Acute infectious endocarditis secondary to dental pathology: a problem of prevention]. PMID- 3862942 TI - [Diabetes: a daily problem in dental practice]. PMID- 3862943 TI - [Melkersson-Rosenthal syndrome. A propos a clinical case]. PMID- 3862944 TI - [Medico-pharmacological treatment of inflammatory processes of the jaw bones and perimaxillary tissues in pregnant women]. PMID- 3862945 TI - [Primary complex of the oral cavity. A clinical case]. PMID- 3862946 TI - [Clinico-statistical observations of 2440 cases of tooth extraction]. PMID- 3862947 TI - [Clinical case of craniometaphyseal dysplasia]. PMID- 3862948 TI - [Epidemiology of dental caries and periodontal disease in a group of mountain dwellers in Trentino-Alto Adige]. PMID- 3862949 TI - [Giant-cell neoplasms]. PMID- 3862950 TI - [Glass ionomer cements: clinical and esthetic evaluation]. PMID- 3862951 TI - [Clinical use of fosfomycin in bacterial infections of the oral cavity in childhood]. PMID- 3862952 TI - [Method for splinting]. PMID- 3862953 TI - Prevention of bacterial endocarditis: an update. PMID- 3862954 TI - Ra5G, a homologue of Ra5 in giant ragweed pollen: isolation, HLA-DR-associated activity and amino acid sequence. AB - Recent studies [Marsh et al. (1982) J. exp. Med. 155, 1439-1451; Coulter (1983) M.Sc. thesis, McGill University, Montreal, Canada; Coulter et al. (1983) in Genetic and Environmental Factors in Clinical Allergy (Edited by Marsh D.G., Blumenthal M.N. and Santilli J., Jr), University of Minnesota Press, Minneapolis, MN] have shown a highly significant association between HLA-Dw2/DR2 and host sensitivity to the 5000-D, 4-disulfide bonded protein Ra5S of short ragweed pollen. To extend these findings, we isolated Ra5G, an Ra5S-like protein, from giant ragweed pollen by gel and ion-exchange chromatography. The protein was homogeneous by polyacrylamide gel electrophoresis (pH 4.3), reverse-phase high performance liquid chromatography, and antigenic assays. Its mol. wt and amino acid composition (including 8 half-cystine residues) were closely similar to Ra5S, but the two proteins had little or no antigenic or allergenic cross reactivity. In a study of 200 ragweed-sensitive individuals, host sensitivity simultaneously to Ra5G and Ra5S was significantly associated with the DR2 allele. The amino acid sequence of Ra5G was determined and showed close homology with Ra5S. The potential function of a highly homologous decapeptidyl sequence stretch is discussed in relation to Ir gene control of immune response to the 2 proteins. PMID- 3862955 TI - [Causes and natural course of obesity in man]. PMID- 3862956 TI - [Obesity. Phenogenesis: indications, goals and methods of therapy]. PMID- 3862957 TI - [Acute abdomen in leukemias in childhood]. AB - During the last years the treatment of acute leukemia became more successful thanks to aggressive chemotherapeutic regimen. There are nowadays about 70% long term survivors in the literature. On the other hand, complications and infection rate following such an aggressive treatment increased. We found in our patients an accumulation of acute abdominal complaints, mostly due to an acute appendicitis. Eight patients had to undergo appendectomy. We tried to answer the question whether there is a correlation between complications and the intensity of chemotherapy. The indication for operation was always proven to be correct, and no patient was lost in the postoperative course. PMID- 3862958 TI - [A diagnostic study on variations in gingival color]. PMID- 3862959 TI - [Relation between the position changes of the cusp tips and the reduction of the distolingual cusps in the upper molars]. PMID- 3862960 TI - [Application of fuzzy logic in diagnostic processes for the propriety of tooth conservation]. PMID- 3862961 TI - [Use of the blade mechanism for oral reconstruction]. PMID- 3862962 TI - [How well do you understand laboratory data? A case of anemia presenting with a "central bar"]. PMID- 3862963 TI - [Oral cytology. Carcinoma of the maxillary sinus]. PMID- 3862964 TI - [Scanning electron microscopy observations of gallstones]. PMID- 3862965 TI - [Absorption and penetration of antibiotics in relation to their structure and pharmacokinetics]. PMID- 3862966 TI - [Effect of a deproteinized calf blood extract on experimental periapical lesions]. PMID- 3862967 TI - Targeting in mammalian cells. PMID- 3862968 TI - Genetic engineering. Restrictions on industry eased. PMID- 3862970 TI - [AIDS (acquired immunodeficiency syndrome)]. PMID- 3862969 TI - A model for intracellular translocation of protein kinase C involving synergism between Ca2+ and phorbol esters. AB - The activation of protein kinase C by diacylglycerol and by tumour promoters has implicated this enzyme in transmembrane signalling and in the regulation of the cell cycle. In vitro studies revealed that catalytic activity requires the presence of calcium and phospholipids with a preference for phosphatidylserine. Diacylglycerol and tumour promoters such as phorbol esters bind to the enzyme, leading to its activation while sharply increasing its affinity for Ca2+ and phospholipid. Addition of diacylglycerol analogues or phorbol esters to intact cells results in the phosphorylation of specific polypeptides. Several cellular processes, including hormone and neurotransmitter release and receptor down regulation, are modulated by the activation of protein kinase C, while phorbol ester-induced stimulation of the enzyme in whole cells has been associated with its translocation from the cytoplasm to the plasma membrane. Moreover, the use of Ca2+ ionophores has revealed an apparent synergism between Ca2+ mobilization and protein kinase C activation. This synergism has recently also been found to apply to receptor down-regulation (ref. 23 and accompanying paper). Here we describe a reconstitution system in which intracellular translocation of protein kinase C and the synergism between Ca2+ and enzyme activators can be studied. The results suggest a rationale for concomitant Ca2+ mobilization and diacylglycerol formation in response to some hormones, neurotransmitters and growth factors. PMID- 3862971 TI - [Structure and growth of the cartilage of the temporomandibular joint]. PMID- 3862972 TI - [The elderly on tooth loss]. PMID- 3862973 TI - [An oral health study. IV. Analysis of a proposal for the improvement of an oral health index]. PMID- 3862974 TI - [Course counseling as a part of a personalized study system: the tutor]. PMID- 3862975 TI - [New attachment, wishful thinking by the periodontist?]. PMID- 3862976 TI - [Diagnosis and therapy of a patient with dysfunction of the temporomandibular joint and masticatory muscles]. PMID- 3862977 TI - [Information on dental topics in the Dutch press, 1973-1983]. PMID- 3862978 TI - [The working preventive dentist: is he still a "ghost-rider" according to present day conceptions?]. PMID- 3862979 TI - [Oral health study. V. Social desirability and answers to a survey in a dental health study among 15 year-old children]. PMID- 3862981 TI - The world cigarette pandemic. Part II. PMID- 3862980 TI - [Inter-examiner-agreement in judging the preclinical work of students]. PMID- 3862982 TI - If smoking killed baby seals.... PMID- 3862983 TI - Competing agenda in smoking control agencies. "Those who pay the piper ...". PMID- 3862984 TI - A smoke-free society by the year 2000. PMID- 3862985 TI - A disease model of cigarette use. PMID- 3862986 TI - The underemphasis on smoking in medical education. PMID- 3862987 TI - An insurance company perspective on smoking. PMID- 3862988 TI - Changes in overwrap and butt length of American filter cigarettes. An influence on reported tar yields. PMID- 3862989 TI - The "less hazardous" cigarette: a deadly delusion. PMID- 3862990 TI - Getting women hooked: defending the indefensible. Interview by Bobbi Jacobson. PMID- 3862991 TI - Superman and the Malboro woman. The lungs of Lois Lane. PMID- 3862993 TI - Smoking and the military. PMID- 3862992 TI - Cigarette smoking and ill health among black Americans. PMID- 3862995 TI - Obstacles to the prevention of teenage smoking. Interview by Alan Blum. PMID- 3862994 TI - Helping youth decide: "when the fox preaches, beware the geese". PMID- 3862996 TI - The comprehensive Smoking Education Act. PMID- 3862997 TI - New Jersey's hard-fought battle for clean indoor air legislation. An insider's view. PMID- 3862998 TI - Proposition P: anatomy of a nonsmokers' rights ordinance. PMID- 3862999 TI - Local values versus tobacco industry power. The experience of GASP of Massachusetts. PMID- 3863000 TI - An assessment of the effectiveness of nicotine chewing gum: unfulfilled expectations. PMID- 3863001 TI - An indoor air quality standard for ambient tobacco smoke based on carcinogenic risk. PMID- 3863002 TI - A pilot's guide to cabin air quality and fire safety. PMID- 3863003 TI - Endobronchial foreign body (cigarette filter tip) with inflammatory pseudotumor of the lung. A "true" xanthogranuloma. PMID- 3863004 TI - The clinician and smoking in Great Britain. PMID- 3863005 TI - Physicians, smoking, and health in the Netherlands. PMID- 3863006 TI - Economic dependence on tobacco manufacturing in Northern Ireland. An obstacle to prevention. PMID- 3863007 TI - Slow but steady progress against smoking in Ireland. PMID- 3863008 TI - An attempt to circumvent the ban on cigarette advertising in Norway. PMID- 3863009 TI - Innovation in Iceland: graphic health warnings on tobacco products. PMID- 3863010 TI - Smoking in France: a dismal picture. PMID- 3863011 TI - Smoking and its promotion in Greece. A 20th century Trojan horse. PMID- 3863012 TI - Smoking and health in the Soviet Union and Eastern Europe. PMID- 3863014 TI - Cigarette smoking in Papua New Guinea. A model for keeping a people down. PMID- 3863013 TI - Israel: gaining momentum against smoking and cigarette advertising. PMID- 3863015 TI - Ending the social acceptability of smoking and tobacco advertising in New Zealand. PMID- 3863016 TI - Japan: land of the rise in lung cancer. US government aids cigarette sales. PMID- 3863017 TI - Has breast self-examination had a fair trial? PMID- 3863019 TI - Breast self-examination--a practice whose time has come? PMID- 3863018 TI - The current status of research in breast self-examination. PMID- 3863020 TI - Spontaneous dissection of the right coronary artery. PMID- 3863021 TI - Scalds of the lap. PMID- 3863022 TI - Repair of inguinal hernia with Marlex mesh. PMID- 3863023 TI - A 77-year-old woman with giant-cell arteritis, back pain, and shock. PMID- 3863024 TI - Suppurative pneumococcal inguinal adenitis. PMID- 3863025 TI - Pseudoinfarction pattern associated with myocardial bridging of the left anterior descending artery. PMID- 3863026 TI - Uterine tumor due to placenta increta. PMID- 3863027 TI - Cardiac siderosis in thalassemia major. PMID- 3863029 TI - Effect of oral penbutolol on renal haemodynamics of hypertensive patients with renal insufficiency. AB - Acute or chronic administration of most beta-adrenoreceptor blocking drugs is associated with a fall in renal blood flow and glomerular filtration rate. In patients with renal insufficiency this effect on renal function may be clinically important. Penbutolol is a non-cardioselective, pure laevo, beta-blocker with intrinsic sympathomimetic activity. Previous studies have suggested that penbutolol may increase the glomerular filtration rate. In this study eight hypertensive patients with renal insufficiency were studied during a three-week placebo period and then for four weeks while taking penbutolol in a dose of 40 or 80 mg daily. Penbutolol produced a fall in the pulse rate in all eight patients. Five of the eight patients had a fall in their supine and standing blood pressure. Effective renal plasma flow and glomerular filtration rate did not change significantly. In seven of the eight patients there was a fall in the calculated renal vascular resistance but the mean fall did not reach statistical significance. Penbutolol appears to be an effective beta-blocker and one that could be used appropriately in patients with renal insufficiency. PMID- 3863030 TI - The nuclear stethoscope. AB - Eighty consecutive patients undergoing radionuclide gamma camera studies for the measurement of ejection fraction were also examined with the nuclear stethoscope. Overall, the correlation coefficient relating these two techniques was acceptable (r = 0.85). However, two groups were identified: patients with symmetrical wall motion had an excellent correlation (r = 0.90) while patients with regional wall motion abnormalities had a poor correlation (r = 0.78). In conclusion, the nuclear stethoscope is a clinically useful device for monitoring left ventricular function in patients with symmetrical wall motion. PMID- 3863028 TI - Asymptomatic perforation of the small intestine by a copper-7 intrauterine device. PMID- 3863031 TI - Acute renal failure secondary to non-traumatic rhabdomyolysis following amoxapine overdose. AB - A case is reported of amoxapine overdose followed by acute rhabdomyolysis and myoglobinuric acute renal failure. There was disseminated intravascular coagulation and later hypercalcaemia. The patient recovered. PMID- 3863032 TI - Treatment of myocardial infarction by early lysis of intracoronary thrombi. PMID- 3863033 TI - The economic costs to New Zealand of lost production due to alcohol abuse. AB - This paper estimates the economic cost of lost production in New Zealand due to the abuse of alcohol. Four categories of lost production are examined including excess unemployment amongst abusers, decreased efficiency of abusers in the workforce, temporary withdrawal from the work force due to alcohol induced illness or accident, and permanent withdrawal from the work force due to the premature death of abusers. Assuming full employment, a 4.3% prevalence rate of alcohol abuse, and a 3 : 1 ratio of male to female abusers, the study presents estimates of costs for a range of possible abuser employment levels. The findings indicate that the cost of lost production due to alcohol abuse was between $582 million and $770 million for the 1981/82 financial year. This was equivalent to between 2% and 2.3% of GNP for that year. PMID- 3863034 TI - Colorectal cancer in Auckland 1981-1982: patients with liver metastases. AB - In a population-based study of 402 cases of colorectal cancer in Auckland, 72 patients (18%) demonstrated liver metastases either at presentation or at initial surgery. The findings of pre-operative weight loss, hepatomegaly and elevated alkaline phosphatase were significantly associated with heptic metastases. Individually these factors were insensitive indicators of the presence of liver metastases. Two or more of these risk factors were demonstrated by 54% of the patients with liver secondaries compared to 19% in the series without liver metastases. Continuing surveillance of the latter group of patients will show whether they are also at risk of developing liver secondaries. The median survival for the 69 patients who were diagnosed before death was 6.0 months. When the primary lesion was resected and the patient survived the post-operative period the median survival was 11.0 months. PMID- 3863035 TI - The public's perception of psychiatrists: a telephone survey. AB - A random telephone survey in the Christchurch toll free area showed: The public generally lacks knowledge about psychiatrists particularly the 60+ age group in their knowledge of whether or not psychiatrists are medical doctors, where they work and what treatments they use; he public's most common association with where psychiatrists work in Christchurch is Sunnyside Hospital, the local public psychiatric hospital and with talking/psychotherapy as a form of treatment they use; and (3) although psychiatrists are perceived negatively compared with family doctors, dentists and lawyers and although people seem reluctant to say a psychiatrist could help them if they had personal problems, nearly half the sample thought there were not enough psychiatrists in New Zealand. PMID- 3863036 TI - Child abuse: mandatory reporting. PMID- 3863037 TI - Vitamin C and cancer. PMID- 3863038 TI - Repetitive strain injury. PMID- 3863039 TI - Repetitive strain injury, or incipient skeletal fluorosis? PMID- 3863040 TI - Eating attitudes. PMID- 3863041 TI - Ketotifen and asthma. PMID- 3863042 TI - Plasma manganese in an adult Auckland population group. PMID- 3863043 TI - Postviral bronchitis and asthma. PMID- 3863044 TI - The New Health Revolution. PMID- 3863045 TI - Potential antidote for Rompun (xylazine) in humans. PMID- 3863046 TI - Abortion and medical discipline. PMID- 3863047 TI - Sterilisation of babies' bottles. PMID- 3863048 TI - The curious case of abortion. PMID- 3863049 TI - Toxocaral infection in hydatid control officers: diagnosis by enzyme immunoassay. AB - An enzyme-linked immunosorbent assay for Toxocara canis larva excretory/secretory antigen has been set up in Christchurch. Employing this test, elevated specific antibody levels for toxocara larvae were found in 3.3% (3/90) of urban adult blood donors and 4.4% (4/90) of secondary school students. In comparison, elevated levels were present in 25.6% (23/90) of New Zealand hydatid control officers. It can be concluded from the present study that the higher risk of toxocariasis experienced by hydatid officers is reflected in elevated specific antibody titres in a significant proportion of individuals when compared with controls. PMID- 3863050 TI - Hyponatraemic-hypertensive syndrome due to unilateral renal ischaemia in women who smoke heavily. AB - The hyponatraemic-hypertensive syndrome due to renal ischaemia is presumed to be uncommon. We describe four patients who presented with this syndrome over a period of 21 months. All were women who smoked heavily and had unilateral atherosclerotic renal ischaemia. Hypokalaemia was present in each patient, and in one case resulted in recurrent ventricular tachycardia. All had noted thirst, polyuria, and weight loss. Initiation of treatment with a converting-enzyme inhibitor reduced arterial pressure precipitously in two patients. Removal of the ischaemic kidney, or chronic therapy with a converting-enzyme inhibitor reversed the biochemical abnormalities and the presenting symptoms, and lowered arterial pressure. Detailed studies in two patients before and after treatment confirmed the central role of the renin-angiotensin system in the development of the hyponatraemic-hypertensive syndrome. PMID- 3863051 TI - The accident and emergency department. PMID- 3863052 TI - Obstructive sleep apnoea in Auckland: diagnosis and treatment. AB - In 1982 facilities for investigation of patients with sleep disorders were established at Auckland Hospital on a trial basis. Twenty patients with the obstructive sleep apnoea syndrome had been investigated and treated by the end of 1983. All were advised to avoid alcohol and sedatives and the obese patients were encouraged to lose weight. In the more severely affected patients either nasal continuous positive airway pressure or tracheostomy was used. The method of diagnosis and treatment are discussed. PMID- 3863053 TI - Psychological aspects of female sterilisation--assessment of subsequent regret. AB - In order to study subsequent regret as a complication of female sterilisation, hospital records of women requesting reversal of their sterilisation were compared with women who had not requested a reversal. Regret was more likely in women sterilised at a younger age, but was not associated with lower parity. Women requesting reversal were interviewed to determine the psychosocial factors likely to produce later regret. The clinical implications are discussed. PMID- 3863054 TI - On the border of Afghanistan with the International Committee of the Red Cross. PMID- 3863055 TI - Perinatal mortality in Southland: an ongoing review. AB - A review of Southland's perinatal mortality was undertaken from 1978 to 1983 and included 124 deaths with a postmortem rate of 90%. The perinatal mortality rate has continued to fall during this period, and has more than halved since 1971. Prematurity remains the single most important factor, and there are still a large number of avoidable deaths. Eighty percent of confinements are attended solely by general practitioner obstetricians. PMID- 3863056 TI - Cytology, colposcopy and cervical neoplasia. AB - There have been suggestions that the failure to reduce the incidence of cervical carcinoma in New Zealand is due to a failure to take cervical smears from women at risk, and to appropriately manage those with abnormal smears. Review of data collected from a clinic in Christchurch over a four-year interval found that the majority of those with invasive cancer had never had a smear taken, or had not had smears taken frequently enough. There was evidence that cytology does not always correlate with definitive histology, and that patients with abnormal smears sometimes experienced lengthy delays before being referred for management. Comments are made on who should have smears, how often, and how women with abnormal smears should be managed. PMID- 3863058 TI - Large bowel cancer. PMID- 3863059 TI - General practice--the writing on the wall. PMID- 3863057 TI - Sexually transmitted diseases. From the Department of Health. PMID- 3863061 TI - Acupuncture. PMID- 3863060 TI - The function of the emotions: some thoughts. PMID- 3863062 TI - Asthma mortality and socioeconomic status. PMID- 3863063 TI - Homosexual law reform. PMID- 3863064 TI - AIDS: acquired immune deficiency syndrome. PMID- 3863065 TI - AIDS--the end of permissive society? PMID- 3863066 TI - Discharge planning using an ADL rating scale, 1982-83: activities of daily living. PMID- 3863067 TI - Nurses' feelings about working with the dying. PMID- 3863068 TI - Terminal care of a patient suffering from head and neck cancer. PMID- 3863069 TI - Paramolars: a case report. PMID- 3863070 TI - Investor owned arrangements--some considerations for dentistry. PMID- 3863071 TI - Public health education and the dentist. PMID- 3863072 TI - Community- and school-based caries preventive programs. Participation of New York State children. PMID- 3863073 TI - Sources and losses of New York State dentists. PMID- 3863074 TI - Lipoma in the cheek of a child. PMID- 3863075 TI - A concept of esthetics. PMID- 3863076 TI - A technical advance in esthetic dentistry. PMID- 3863077 TI - The role of the cosmetic dentist. PMID- 3863078 TI - Communicating esthetics. PMID- 3863079 TI - Invisible lingual orthodontic appliances. PMID- 3863080 TI - Micro information disc. PMID- 3863082 TI - Does joining a preferred provider plan bring new dental patients? PMID- 3863081 TI - The Pankey philosophy. One purpose of the Pankey philosophy is happiness. PMID- 3863083 TI - [A case of plasma cell leukemia. Clinical and cytogenetic observations]. PMID- 3863084 TI - Hemorrhagic varicella. PMID- 3863085 TI - [Fates of children with many-year remission in lymphatic system neoplasms. Follow up from 6 to 15 years]. PMID- 3863087 TI - Bulimia in adolescents: a review. AB - This report reviews the occurrence of bulimia in female adolescents, a relatively common disorder. Features contributing to its occurrence in adolescents and treatment modalities are highlighted. A high degree of suspicion is needed to make the diagnosis and further work is required to clarify the unique aspects of this disorder in adolescents. PMID- 3863086 TI - Epidemiology of herpes zoster in children and adolescents: a population-based study. AB - Medical records were reviewed for all 173 cases of herpes zoster diagnosed among residents of Rochester, Minnesota, less than 20 years of age during the period 1960 through 1981. The incidence of zoster increased with age from 20 cases per 100,000 person-years in those residents less than five years of age to 63 cases per 100,000 person-years in those aged 15 to 19. Morbidity was less than has been described in adults, as only two patients required hospitalization and no postherpetic neuralgia or other late complications were diagnosed. The single case of subsequent cancer found in 1,288 person-years of follow-up was not significantly different from the number expected based on cancer incidence in the general Rochester population. The incidence of childhood zoster in patients with acute lymphocytic leukemia was 122 times higher than in children without an underlying malignancy. Chickenpox in the first year of life was found to be a risk factor for childhood zoster, with a relative risk between 2.8 and 20.9. Neither chickenpox in the second year of life nor recent vaccinations were found to be risk factors for childhood zoster. PMID- 3863088 TI - [Translocation 8:21 in acute myeloblastic leukemia in children]. PMID- 3863089 TI - [Characteristics and treatment of testicular lesions in acute lymphoblastic leukemia in children]. PMID- 3863090 TI - [What are dental assistants and hygienists allowed to do?]. PMID- 3863091 TI - [Significance of the saliva in the prevention of caries]. PMID- 3863092 TI - [Significance of the saliva in the prevention of caries]. PMID- 3863093 TI - [Prosthetic care of patients with cleft lip, cleft jaw, cleft palate with the Linkow blade implant]. PMID- 3863094 TI - [Scintigraphic appearances of Gaucher's disease]. PMID- 3863095 TI - Computers in the dental office: a Minnesota survey. PMID- 3863096 TI - Group C streptococcal arthritis and osteomyelitis in an adolescent with a hereditary sensory neuropathy. PMID- 3863097 TI - Pharmacokinetics of elimination of 6-mercaptopurine in the urine of children with acute lymphoblastic leukemia. AB - 6-Mercaptopurine (6-MP)-induced sodium azide--iodine reaction was adapted for determination of 6-MP in urine of four children treated with single oral doses of the drug in tablets. Open one-compartment body model was assumed, and first-order elimination rate constants (K) and biological half-life times (t0,5) were calculated, and their precision was determined by statistical treatment. PMID- 3863098 TI - Influence of prostaglandin E2 on myoelectrical activity of the uterus and vagina in the domestic hen. AB - In conscious hens, the effect of intra-aortic infusion of prostaglandin E2 (PGE2) on myoelectrical activity of the uterus, utero-vaginal junction (UVJ), vagina, duodenum, and on heart rate was studied. Infusion of .3 micrograms PGE2/animal/min resulted in no significant changes in oviduct activity, whereas 3 micrograms/animal/min induced a significant decrease in vaginal activity but had no significant effect on activity of the uterus and UVJ. Infusion of both doses provoked a decrease in duodenal activity (P less than .05) and an increase in heart rate (P less than .05). PMID- 3863099 TI - Effects of prostaglandin E2 and dental plaque on bone collagen and hyaluronic acid synthesis. PMID- 3863100 TI - Structure of canine pulmonary surfactant apoprotein: cDNA and complete amino acid sequence. AB - The apoproteins of pulmonary surfactant (PSAP) are thought to be critical for normal surfactant function. They bind to surfactant phospholipids and enhance their ability to form surface films in vitro. These acidic glycoproteins have monomeric molecular weights of 36,000, 32,000, and 28,000 (PSAP-36, -32, and 28). Each member of this family of proteins has a similar amino acid composition and their differences in electrophoretic mobility are due in part to glycosylation. We have derived the full amino acid sequence of PSAP-32 from the nucleotide sequence of PSAP cDNA. A cDNA library was prepared from canine lung poly(A)+ RNA and screened with oligonucleotide probes that were based on the NH2 terminal amino acids of PSAP-32 determined by Edman degradation. This protein has the striking feature of collagen-like and non-collagen-like sequences in the same polypeptide chain. There are 24 Gly-Xaa-Yaa triplets, where Yaa is often hydroxyproline. These repeats comprise one-third of PSAP near the NH2 terminus. The remaining two-thirds of PSAP is resistant to bacterial collagenase digestion and contains a possible N-glycosylation site near the carboxyl terminus. The NH2 terminal one-third of PSAP-32 probably contains the cysteine involved in interchain disulfide bonds. PMID- 3863101 TI - Replication of phage phi 29 DNA with purified terminal protein and DNA polymerase: synthesis of full-length phi 29 DNA. AB - A system that replicates bacteriophage phi 29 DNA with protein p3 covalently attached to the two 5' ends, using as the only proteins the phi 29 DNA polymerase and the terminal protein, is described. Restriction analysis of the 32P-labeled DNA synthesized in vitro showed that all phi 29 DNA fragments were labeled. Analysis by alkaline sucrose gradient centrifugation of the DNA labeled during a 10-min pulse showed that, after a 20-min chase, about half of the DNA molecules had reached apparently full-length phi 29 DNA (approximately equal to 18,000 nucleotides). Ammonium ions strongly stimulated phi 29 DNA-protein p3 replication, the effect being due to stimulation of the initiation reaction. ATP was not required for phi 29 DNA-protein p3 replication, either in the initiation or elongation steps. The results show that the phi 29 DNA polymerase functions, not only in the formation of the p3-dAMP covalent initiation complex but also in the elongation of the latter, as the only DNA polymerase to produce full-length phi 29 DNA. PMID- 3863103 TI - Crystallographic structure of an active, sequence-engineered ribonuclease. AB - X-ray diffraction methods were used to test a synthetic-modeling approach to the sequence engineering of bovine pancreatic ribonuclease. A model of RNase S peptide (residues 1-20), having a simplified amino acid sequence but retaining elements deduced to be essential for conformation and function, was previously synthesized and found to form a catalytically active and stable complex with native S-protein (residues 21-24). We have now obtained a 3-A-resolution electron density map of this semisynthetic complex which reveals that the conformation of model peptide closely mimics that of native S-peptide, as intended by sequence design. Some small differences from the native structure are observed: Glu-2 and Arg-10 of the model complex are not close enough to form a salt bridge, the position of the His-12 imidazole ring is slightly shifted in the active site, and the peptide's amino terminus is reoriented. Nonetheless, the major structural features predicted to be essential by computer-aided peptide-design analysis are preserved in the model peptide portion of the complex. These include (i) the alpha-helical framework involving residues 3-13, (ii) the catalytically competent orientation of His-12, and (iii) complex-stabilizing non-bonding interactions involving Phe-8 and Met-13 of S-peptide and hydrophobic residues in the cleft region of S-protein. Further, sequence simplification has not introduced any non native, potentially stabilizing contacts between the model peptide and S-protein. The results emphasize the usefulness, in redesigning native proteins, of categorizing sequence into residues providing conformational framework and those determining intra-and intermolecular surface recognition. PMID- 3863102 TI - Activation of retinoic acid by coenzyme A for the formation of ethyl retinoate. AB - All-trans-retinoic acid is metabolized to a less polar metabolite in rat liver microsomes. This metabolite was proven to be ethyl retinoate by cochromatography on high-performance liquid chromatography, base hydrolysis to all-trans-retinoic acid, and gas chromatography/mass spectral analysis. The formation of ethyl retinoate is a specific enzymatic process; the apparent Km for all-trans-retinoic acid is 9.8 microM. The production of ethyl retinoate is greatly stimulated by the addition of coenzyme A, suggesting the formation of a retinoic acid-coenzyme A intermediate (retinoyl-coenzyme A). PMID- 3863104 TI - Inhibition of chymotrypsin by heparin cofactor II. AB - Human heparin cofactor II is a plasma protein that is known to inhibit thrombin. The rate of thrombin inhibition by heparin cofactor II is accelerated (greater than or equal to 1000-fold) in the presence of the glycosaminoglycans, heparin and dermatan sulfate. We have found that chymotrypsin A alpha is also inhibited by heparin cofactor II with a second-order rate constant value of 1.8 X 10(6) M-1 X min-1 at pH 8.0 and 25 degrees C. However, there was no measurable effect of heparin or dermatan sulfate on the rate of chymotrypsin inhibition. Arginine modified heparin cofactor II showed a comparable percentage loss of both antichymotrypsin and antithrombin activities. Heparin cofactor II and chymotrypsin formed a stable complex with a Mr value near 90,000 when analyzed by NaDodSO4/polyacrylamide gel electrophoresis; this suggests a 1:1 reaction stoichiometry. The chymotrypsin cleavage site in heparin cofactor II was the same as that for thrombin, and primary structure analysis of the inhibitor showed a P'1-P'8 sequence of Ser-Thr-Gln-Val-Arg-Phe-Thr-Val ... . The results indicate that, in contrast to alpha 1-antichymotrypsin, which does not inhibit trypsin like enzymes, including thrombin, heparin cofactor II can effectively inhibit both thrombin and chymotrypsin. PMID- 3863105 TI - Site-specific cleavage of left-handed DNA in pBR322 by lambda tris(diphenylphenanthroline)cobalt(III). AB - The chiral complex tris(4,7-diphenyl-1,10-phenanthroline)cobalt(III), lambda Co(DiP)3(3+), binds to and, with photoactivation, cleaves left-handed DNA helices, thereby providing a unique molecular probe for local DNA conformation. We have mapped the specific left-handed sites where lambda-Co(DiP)3(3+) cleaves in the plasmids pBR322 and pLP32, which is the derivative of pBR322 containing a Z-form d(C-G)16 insert. For pLP32, a primary cleavage is at the insert; for native pBR322, cleavage occurs at four discrete sites: 1.45, 2.3, 3.3, and 4.2 kilobase pairs. These sites correspond to segments of alternating purine pyrimidines. Moreover, these positions map to the ends of the three distinct coding regions in pBR322: the tetracycline-resistance gene, the origin of replication, and either end of the ampicillin-resistance (beta-lactamase) gene. The locations of these left-handed segments suggest to us that Z-DNA might serve as a conformational punctuation mark to demarcate the ends of genes. PMID- 3863106 TI - Sequence of a second human asialoglycoprotein receptor: conservation of two receptor genes during evolution. AB - The asialoglycoprotein (ASGP) receptor isolated from human liver and from the human hepatoma cell line HepG2 migrates on NaDodSO4 gel electrophoresis as a single species of 45,000 daltons. Recently, we isolated a cDNA clone encoding this receptor (H1) from a HepG2 lambda gt11 library. From the same library, we have isolated and sequenced a clone encoding a second ASGP receptor, H2, with a protein sequence homology of 58% to H1. There are two subspecies of H2 that differ only by the presence of a five-amino acid insertion in the COOH-terminal extracytoplasmic domain. Comparison with the available sequences of the two rat ASGP receptors R1 and R2 indicates that H1 is more homologous to R1 than to H2, and H2 is more similar to R2 than to H1. Thus, the two receptor genes evolved before the separation of rat and man. As judged by RNA blot hybridization of HepG2 RNA using RNA transcribed in vitro from cDNA clones of the human receptors as standards, H1 and H2 mRNA are present in equimolar amounts, each 0.005-0.01% of the total mRNA. This finding raises the question of whether the three ASGP receptor proteins are functional as heterodimers or whether they might serve different functions in the cell. PMID- 3863107 TI - Replication timing of the H4 histone genes in Physarum polycephalum. AB - The time of replication of the two H4 histone genes (H41 and H42) was determined during the naturally synchronous mitotic cycle of Physarum polycephalum. 5-Bromo 2'-deoxyuridine labeling and density gradient centrifugation was used to isolate newly synthesized DNA from defined periods of S phase. The DNA was analyzed by Southern hybridization with a cloned probe containing one of the H4 histone genes of Physarum. The results indicate that the two H4 histone genes are replicated in the first 30 min of S phase but not exactly at the same time. H41 is replicated during the first 10 min of S phase, when only 15% of the genome is duplicated, whereas H42 replicates between 20 and 30 min after the onset of S phase. The possible relationship between the periodic expression of the genes and the timing of their replication is discussed. PMID- 3863108 TI - The structure of caltrin, the calcium-transport inhibitor of bovine seminal plasma. AB - The amino acid sequence of the bovine seminal protein, caltrin, which inhibits calcium transport into spermatozoa, has been determined. The protein contains 47 amino acid residues. Parts of the sequence are identical with that reported for bovine seminal plasmin, a protein possessing antibacterial activity. We believe the proteins are identical and that the previously reported sequence of seminal plasmin is in error. PMID- 3863109 TI - Primary structure of bovine pituitary basic fibroblast growth factor (FGF) and comparison with the amino-terminal sequence of bovine brain acidic FGF. AB - The two major mitogenic polypeptides for endothelial cells have been purified to homogeneity. The complete primary structure of bovine pituitary basic fibroblast growth factor (FGF) and the amino-terminal amino acid sequence of bovine brain acidic FGF have been established by gas-phase sequence analyses. Homogeneous preparations of these polypeptides are potent mitogens (basic FGF, ED50 approximately equal to 60 pg/ml; acidic FGF ED50 approximately equal to 6000 pg/ml) for many diverse cell types including capillary endothelial cells, vascular smooth muscle cells, and adrenocortical and granulosa cells; in vivo, basic FGF is a powerful angiogenic agent in the chick chorioallantoic membrane assay. The available protein sequence data demonstrate the existence of significant structural homology between the two polypeptides. PMID- 3863110 TI - Visualization of oriented hemoglobin S in individual erythrocytes by differential extinction of polarized light. AB - The distribution of oriented, polymerized sickle cell hemoglobin (hemoglobin S) in erythrocytes is visualized with a microscope that produces an image proportional to linear dichroism. Monochromatic light alternately polarized along two perpendicular directions is incident on the sample. The image is focused on a diode array, and the digital output is used to form two images. One is the usual image proportional to the average transmitted light intensity of the two incident polarizations of light; the other is a linear differential image proportional to the linear dichroism of the sample. This quantitative image can specifically reveal oriented hemoglobin molecules with a sensitivity of about 4000 oriented molecules per picture element of the image. PMID- 3863111 TI - Molecular packing and area compressibility of lipid bilayers. AB - Knowledge of the molecular packing of lipids and water in lipid bilayers is important for understanding bilayer mechanics and thermodynamics. Information on packing is most often obtained from x-ray or neutron diffraction measurements. Given the d spacing, composition, and partial specific volumes of the lipid and water, it is a simple matter to calculate the area per lipid molecule, bilayer thickness, and bilayer mass density. The partial specific volumes are commonly assumed to be those of bulk water and of lipid in excess water regardless of the degree of bilayer hydration. We present evidence here that these assumptions should be seriously questioned. At low hydrations, we find the head groups of egg and dioleoyl lecithin to be much less tightly packed than previously thought and the partial specific volume of water to be considerably smaller than 1 ml/g. Because the molecular packing affects the mechanical properties of bilayers, we use the results to reevaluate published experiments concerning the elastic area compressibility modulus of egg lecithin bilayers and the repulsive hydration force between bilayers. PMID- 3863112 TI - A molecular dynamics simulation of double-helical B-DNA including counterions and water. AB - We present the results of an atomic level molecular dynamical simulation of a 5 base-pair fragment of double-helical DNA with inclusion of water and sodium counterions and a complete description of their electrostatic interactions. The shape of the double helix is preserved throughout the simulation, and the helix repeat is calculated to be 10.0, in reasonable agreement with experimental results. The most flexible conformational angles in the structure are the glycosidic angle and the sugar pucker. PMID- 3863113 TI - Repeating modular structure of the fibronectin gene: relationship to protein structure and subunit variation. AB - Analysis of the exon-intron structure of the rat fibronectin gene shows that exons correspond precisely with repeating structural units in the protein and that alternative use of some exons produces fibronectin subunits that differ by the presence or absence of certain structural modules. Secondary structure predictions suggest that the repeating structure of the protein is further subdivided into smaller structural units and that these also correspond with exons in the gene. PMID- 3863114 TI - Analyzing the components of microtubules: antibodies against chartins, associated proteins from cultured cells. AB - In previous work, we have identified cytoplasmic microtubule-associated proteins by isolating the microtubule organelles of several different cultured cells. Among those proteins are the chartins, a family of polypeptides with related sequence but of varying molecular weight and isoelectric point. Biochemical analyses of the distribution of the chartins in the cytoplasm, and among cells with different functions, suggest that they may regulate microtubule structure in vivo. We describe here the preparation and application of antibodies to chartins. These antibodies enable us to demonstrate that the chartins colocalize with assembled tubulin in the cytoplasm, as assessed by immunofluorescence, so that they fulfill a major criterion that has been applied to other putative microtubule components. The results also demonstrate that the tau proteins, which fractionate and copurify with chartins, are in fact clearly distinguishable from them. The implications of these results for evaluating microtubule composition are discussed. PMID- 3863115 TI - Growing Xenopus oocytes have spare translational capacity. AB - Previous studies have shown that exogenous mRNAs injected into full-grown (stage 6) Xenopus oocytes are translated only at the expense of endogenous messages; translational capacity is limited. In this report, we demonstrate that injection of globin mRNA into small, stage 4 oocytes results in an increase in total protein synthesis without a concomitant decrease in the translation of endogenous mRNAs. The absence of competition with endogenous messages in stage 4 oocytes, injected with globin mRNA, compared with stage 6 oocytes, was not due to differential turnover of the injected mRNA. Hybridization of RNA from mRNA injected oocytes at both stages revealed that similar amounts of globin mRNA were present. These results are interpreted to mean that protein synthesis in growing oocytes is limited by the availability of mRNA and not components of the translational machinery. This conclusion, however, does not apply to all mRNA classes. The capacity of stage 4 oocytes to translate a mRNA (zein) on membrane bound polysomes is as restricted as reported previously for stage 6 oocytes. This result suggests that putative membrane binding sites or rough endoplasmic reticulum content are limited in oocytes at both stages. The possible role of association of injected mRNA with endogenous proteins that prevent translation is discussed. PMID- 3863116 TI - Ultraviolet light-induced crosslinking reveals a unique region of local tertiary structure in potato spindle tuber viroid and HeLa 5S RNA. AB - The positions of intramolecular crosslinks induced by irradiation with ultraviolet light were mapped into potato spindle tuber viroid RNA and HeLa 5S rRNA. Crosslinking in each of these molecules occurred at a single major site, which was located by RNA fingerprinting and secondary analysis (and additional primer extension studies in the case of the viroid). Various lines of evidence suggest that these crosslinks identify a previously undescribed element of local tertiary structure common to these two widely divergent RNA molecules: (i) both crosslinks occur in an identical eight-base context, with the sequence 5' GGGAA 3' on one side and the sequence 5' UAC 3' on the other; (ii) both crosslinks connect bases that are not thought to be involved in conventional hydrogen bonding, within regions usually depicted as single-stranded loops flanked by short helical segments; and (iii) both crosslinks connect a purine and a pyrimidine residue, and both may generate the same G-U dimer. Furthermore, it is likely that the crosslinking site is of functional significance because it is located within the most highly conserved region of the viroid sequence and involves bases that are essentially invariant among eukaryotic 5S rRNA molecules. PMID- 3863117 TI - Distribution of initial and persistent 2-acetylaminofluorene-induced DNA adducts within DNA loops. AB - The intranuclear distribution of initial and persistent DNA adducts induced in vivo after four weekly injections of the hepatocarcinogen 2-acetylaminofluorene was examined in rat liver by using a protocol that fractionates chromatin from various regions of each of the multiple nuclear DNA loops. Ten hours after the initial dose, two acetylated [(N-acetyl-N-(deoxyguanosin-8-yl)-2-aminofluorene and 3-(deoxyguanosin-N2-yl)-2-acetylaminofluorene] and one deacetylated [N (deoxyguanosin-8-yl)-2-aminofluorene] adduct were detected by a 32P-labeling assay and were found to have a random genomic distribution, as evident by their relative concentrations in various chromatin fractions. These data suggest that all regions of the DNA loops are equally susceptible to adduct formation. A nonrandom persistence of the deacetylated adduct in the regions where the DNA loops are constrained by the nuclear matrix was evident by 6 days after the last dose and was markedly apparent by 60 days. In contrast, all chromatin fractions had equally inefficient removal of the N2-acetylated adduct by 6 days as well as 60 days but had complete removal of the C8-acetylated adduct. These findings suggest that pronounced regional differences in adduct repair along the DNA loops may play a role in chemically induced hepatocarcinogenesis. PMID- 3863118 TI - Dose-repetition increases the mutagenic effectiveness of N-ethyl-N-nitrosourea in mouse spermatogonia. AB - In order to maximize the mutagenic effectiveness of N-ethyl-N-nitrosourea in mouse stem-cell spermatogonia, advantage was taken of the fact that these cells can accumulate mutations from repeated doses given over relatively long time periods. Repeated doses (100 mg/kg) of ethylnitrosourea injected intraperitoneally into male mice at weekly intervals were found to allow adequate survival and fertility with total dosages of 300 and 400 mg/kg. The specific locus mutation frequencies at these dosages were, respectively, 1.8 and 2.2 times that obtained with the maximal practicable single dose of 250 mg/kg. The mutation frequency induced by a 400 mg/kg dosage of ethylnitrosourea is 12 times the maximal mutation frequency achievable with a single exposure to x-rays and 36 times that reported for procarbazine, the most effective chemical mutagen previously known for mouse stem-cell spermatogonia. Ethylnitrosourea is already the mutagen of choice in deliberate attempts to create mouse models for human disease and in any experiments in which a maximal mutation rate is desired. Repeated-dose regimens similar to the ones reported here should increase the efficiency of such studies. PMID- 3863119 TI - Purification and characterization of a human tumor necrosis factor from the LuKII cell line. AB - A factor with tumor necrosis factor (TNF) activity produced by the LuKII human lymphoblastoid cell line [designated TNF(LuKII)] was purified sequentially by using controlled-pore glass, lentil lectin-Sepharose, and procion red agarose chromatography, yielding TNF with a specific activity of 1.5 X 10(7) units per mg of protein and an isoelectric point of approximately equal to 6.7. Purified TNF(LuKII) fractionated by NaDodSO4/PAGE under reducing as well as nonreducing conditions was found to contain seven protein bands of Mr 80,000, 70,000, 43,000, 25,000, 23,000, 21,000, and 19,000. The proteins of Mr 80,000 and 70,000 could not be dissociated into lower molecular weight components. Peptide mapping analysis and immunoblotting analysis revealed that the seven protein bands in the purified TNF(LuKII) preparations are related. After fractionation of TNF(LuKII) by NaDodSO4/PAGE under reducing conditions, TNF activity was recovered from the regions of Mr 70,000 and 19,000-25,000. Purified human TNF(LuKII) (i) produces hemorrhagic necrosis of Meth A mouse sarcoma in the standard in vivo mouse TNF assay; (ii) has the same pattern of reactivity as mouse TNF (cytotoxic/cytostatic/no effect) on a panel of human cancer cell lines; and (iii) has its anticellular effect potentiated by interferon, also a feature of mouse TNF. PMID- 3863120 TI - Chloride uptake into cultured airway epithelial cells from cystic fibrosis patients and normal individuals. AB - The chloride permeability of airway and sweat ductal epithelium of cystic fibrosis (CF) patients is decreased. This abnormality could represent an intrinsic characteristic of the epithelial cell or the response to a tonic extrinsic stimulus, in vivo. We cultured airway epithelial cells derived from CF and non-CF individuals under identical conditions that were free from donor specific factors. Differences in the characteristics of cells that multiplied under these circumstances are unlikely to reflect the effects of extrinsic modulation present in the host. After 8-12 days in culture, the cells of CF and non-CF patients were similar in morphology and intracellular electrolyte content, but the CF cultures took up chloride at a reduced rate. The difference could not be attributed to a higher intracellular potential in CF cells or to the presence of a stilbene anion-sensitive chloride-chloride exchange in non-CF cells. We conclude that epithelial cells from CF patients grown in the absence of extracellular factors of the host express reduced cellular chloride permeability, a defect similar to that found in vivo and in freshly excised nasal epithelium. PMID- 3863121 TI - Adenine ribo- and deoxyribonucleotide metabolism in human erythrocytes, B- and T lymphocyte cell lines, and monocyte-macrophages. AB - Ordinarily packaged in DNA, adenine deoxyribonucleotides are preferentially concentrated in erythrocyte and lymphocyte cytosol in adenosine deaminase (adenosine aminohydrolase, EC 3.5.4.4) deficiency. A spectrum of cytosol enzyme activities are defined in terms of reaction velocities, K0.5s, and nucleotide partition after incubation with ribo- and deoxyribonucleotides. AMP and dAMP were dephosphorylated, but only AMP was deaminated in vitro. Although nucleotidase activity is much stronger in lymphocytes, AMP deaminase was the dominant degradative reaction in all erythrocyte and lymphocyte lysates under the conditions specified. For most cytosolic enzymes, ribonucleotides were preferred cofactors, implying that dADP and dATP often may be bystanders at metabolic events. The adenylate kinase-mediated partition of approximately equimolar ribo- and deoxyribonucleotide substrates yielded a very large preponderance of AMP in the monophosphate compartment, the monophosphates alone being directly vulnerable to degradative loss. The adenylate kinase(s) of lymphocytes differed strikingly from those of erythrocytes in reaction velocities with nucleotide cofactors, K0.5s, and in susceptibility to substrate inhibition. PMID- 3863123 TI - Hardness, softness, and the fukui function in the electronic theory of metals and catalysis. AB - The concepts of hardness eta = (2E/N2)nu and fukui function f(r) = [rho (r)/N]nu, which have recently been associated with the theory of chemical reactivity in molecules, are extended to the theory of metals. It is shown that at T = 0, 1/eta = g(epsilon F) and f(r) = g(epsilon F, r)/g(epsilon F), where g(epsilon F), and g(epsilon F, r) are the density of states and the local density of states, at the Fermi energy epsilon F. Softness S and local softness s(r) are defined as 1/eta and Sf(r), respectively, and it is shown that (formula; see text) where the averages are over a grand canonical ensemble. It is pointed out that the postulate that f(r) or g(epsilon F, r) determines site selectivity for metals in chemisorption and catalysis is synonymous with the recent argument by Falicov and Somorjai [Falicov, L. M. & Somorjai, G. A. (1985) Proc. Natl. Acad. Sci. USA 82, 2207-2211] that such selectivity is determined by low-energy density fluctuations. PMID- 3863122 TI - Calcium binding in pigmented and albino eyes. AB - The localization of calcium binding sites in eyes was determined autoradiographically after extracting endogenous Ca from tissue sections and replacing it with 45Ca. The strongest labeling was associated with pigmented tissues due to the high concentration of melanin, which was shown to bind Ca effectively and in a pH-dependent fashion. The second strongest binding was over the tapetum lucidum of the cat eye, and moderate labeling was associated with eye muscles and epithelium and endothelium of the cornea. The neural retina was generally more lightly labeled than the surrounding tissue of the eye; here the plexiform layers stood out in comparison to the nuclear layers, as did a band located internal to the photoreceptor outer segments. The possibility that the Ca buffering capacity of melanin may represent the common denominator for the various neurological defects found in hypopigmentation mutants is discussed. PMID- 3863124 TI - Identification of the catalytic subunit of brain adenylate cyclase: a calmodulin binding protein of 135 kDa. AB - The partial purification of the eukaryote adenylate cyclase [ATP pyrophosphate lyase (cyclizing), EC 4.6.1.1] catalytic subunit has been achieved by a procedure based on the calmodulin (CaM) sensitivity of the enzyme. Small amounts of rat brain synaptosomal membranes depleted of CaM were solubilized with Lubrol and subjected to a three-step chromatographic procedure involving gel filtration, a CaM-Sepharose affinity step, and fast protein liquid chromatography. About 20% of the adenylate cyclase activity contained in the membranes was recovered in the final enriched fraction with a specific activity of 200 nmol X mg-1 X min-1. The alpha subunits of the adenylate cyclase stimulatory proteins NS were absent from this final fraction. The addition of CaM, of forskolin, or of preactivated NS containing fractions to this preparation greatly increased the enzyme activity. A CaM-binding polypeptide of 135,000 Da copurified with the adenylate cyclase activity in each of the three steps. Polyacrylamide gel electrophoresis of the final fraction showed that this polypeptide represented 35% of the total protein. We propose that this polypeptide is likely to be the adenylate cyclase catalytic subunit. This enzyme would represent close to 0.5% of the synaptosomal membrane proteins. Its low turnover number would be due to the absence of the alpha subunits of the NS regulatory proteins and would correspond to the enzymic basal level. PMID- 3863125 TI - Argininosuccinate synthetase: essential role of cysteine and arginine residues in relation to structure and mechanism of ATP activation. AB - We have undertaken studies to identify amino acid residues that are involved in the catalytic mechanism of argininosuccinate synthetase [L-citrulline:L-aspartate ligase (AMP-forming), EC 6.3.4.5] and have found that a cysteine residue and an arginine residue are required for activity. The reactive cysteine residues are accessible to solvent and available to react with 5,5'-dithiobis(2-nitrobenzoic acid) (DTNB). Four cysteine residues, one per subunit, are shown by enzymatic assay to be required for catalytic activity, suggesting that a reactive cysteine lies within the active site of argininosuccinate synthetase. In the presence of sodium dodecyl sulfate, 12 cysteine residues react with DTNB; consequently, all of the half-cystine residues in the native enzyme are present in the reduced sulfhydryl form. We also present evidence for the participation of arginine groups in the binding of ATP and PPi. Modification of argininosuccinate synthetase with [14C]-phenylglyoxal results in incorporation concomitant with loss of catalytic activity of 4 mol of phenylglyoxal per mol of native enzyme (one arginine per active site). ATP and PPi protect the enzyme from phenylglyoxal incorporation. Based on these results, we propose that the essential arginine in the active site participates in the binding of ATP and PPi. The binding of ATP and PPi at the same site is mutually exclusive; this exclusion is in accord with the finding that argininosuccinate synthetase has one reactive arginine residue per active site per subunit. This is consistent with our previously proposed reaction mechanism. PMID- 3863126 TI - Modification of chromium(VI)-induced DNA damage by glutathione and cytochromes P 450 in chicken embryo hepatocytes. AB - The role of glutathione and cytochrome P-450 in the production of DNA damage by chromium(VI) was examined in chicken embryo hepatocytes by the alkaline elution technique. Cellular levels of glutathione and cytochrome P-450 were altered by treating the hepatocytes with N-acetyl-L-cysteine, buthionine sulfoximine, isopentanol, or beta-naphthoflavone. A dramatic increase in chromium(VI)-induced DNA strand breaks was observed after increasing glutathione levels in the cells. Chromium(VI)-induced DNA strand breaks were even more numerous when the level of cytochrome P-450 was also increased. Upon depletion of glutathione levels and induction of cytochrome P-450 or cytochrome P-448, little or no DNA strand breaks or DNA interstrand cross-links were observed after chromium(VI) treatment. Chromium(VI)-induced DNA-protein cross-links generally decreased after either increases or decreases in cellular levels of glutathione or cytochrome P-450 or P 448. These results suggest that glutathione enhances chromium(VI)-induced DNA damage through metabolic activation of chromium(VI). The possible production of reactive chromium species upon metabolism by glutathione and cytochrome P-450 or P-448 and their involvement in DNA damage is discussed. PMID- 3863127 TI - Specific transcription of preformed nucleoprotein complexes, containing the adenovirus major late promoter, with a chromatographic fraction containing RNA polymerase II. AB - Incubation in a HeLa whole-cell extract converted a plasmid DNA containing the adenovirus type 2 major late promoter into ordered nucleoprotein complexes similar to those described for simian virus DNA [Sinha, S. N., Hellwig, R. J., Allison, D. P. & Niyogi, S. K. (1982) Nucleic Acids Res. 10, 5533-5552]. Purified nucleoprotein complexes containing the plasmid DNA were able to serve as template for accurate transcription in vitro. Use of such nucleoprotein complexes eliminated the need for addition of nontemplate DNA (poly[d(I-C)]) to transcription reaction mixtures with template concentrations too low to yield a detectable specific-transcription signal from "naked" DNA. Of the four fractions resulting from phosphocellulose column chromatography of the whole cell extract, only the fraction that contained the RNA polymerase II activity was needed to accurately transcribe these nucleoprotein complexes in the presence of human placental ribonuclease inhibitor. In contrast, specific transcription of naked template DNA under these conditions required at least one additional fraction containing specificity factors. These results show that the nucleoprotein complexes contain factor(s) needed for specific initiation of transcription and that these complexes may be useful in the purification and analysis of these factors. PMID- 3863128 TI - Phylogenetic dichotomy of nerve glycosphingolipids. AB - Galactocerebrosides and sulfatides are major characteristic components of vertebrate myelin. In contrast, glucocerebroside is the major glycosphingolipid of shrimp nerve. In this study, the concentrations of these glycosphingolipids in the nervous systems of animals from several evolutionary branches were determined by use of high-performance liquid chromatography. In nerves of protostome animals only glucose-containing glycosphingolipids were detected, whereas glycosphingolipids from deuterostomes contained predominantly galactose. Neither the glycolipids containing alpha-hydroxy fatty acids nor sulfate esters of the glycolipids, both of which always accompany galactocerebrosides in deuterostome myelin, were present in protostome nerves. This correlation suggests an evolutionary trend from gluco- to galactocerebrosides, which corresponds with changes in the nervous system from loosely structured membrane-enwrapped axons to multilamellar highly structured myelin. PMID- 3863129 TI - Immunization of rabbits with purified RNA polymerase I induces a distinct population of antibodies against nucleic acids as well as anti-RNA polymerase I antibodies, both characteristic of systemic lupus erythematosus. AB - Rabbits were immunized with either RNA polymerase I or poly(A) polymerase that had been purified to apparent homogeneity and was devoid of nucleic acids. Sera from rabbits thus immunized were screened for antibodies against nucleic acids. All seven rabbits injected with RNA polymerase I but none of the four rabbits immunized with poly(A) polymerase produced anti-nucleic acid antibodies. Anti-RNA polymerase I antibodies were induced after a single injection of the enzyme. Anti polynucleotide antibodies were not detectable until after the second immunization. Anti-RNA polymerase I antibodies could be detected with as little as 100 pg of purified RNA polymerase I in the radioimmunoassay. At least 50 ng of poly(A) or 200 ng of DNA was required to detect anti-nucleic acid antibodies. The immunoreactivity of anti-RNA polymerase I antisera was greater with synthetic polynucleotides than with DNA, particularly early in the immunization schedule. Alkaline phosphatase treatment of poly(A) to remove 5' phosphates nearly abolished its antigenicity with respect to the early sera and decreased antibody binding of later sera by 60%. These results indicate that the anti-nucleic acid antibodies produced early were primarily directed against determinants including the 5'-terminal phosphates while antibodies produced later were directed against other sites. The antinucleic acid antibodies and anti-RNA polymerase I antibodies formed two distinct populations that were not immunologically crossreactive. We suggest that after injection, RNA polymerase I becomes associated with the nucleic acids present in blood plasma which renders them immunogenic; thus, association of nucleic acids with autoimmunogenic RNA polymerase I may be one of the mechanisms by which anti-DNA antibodies are induced in systemic lupus erythematosus. PMID- 3863131 TI - Shape change of sickled erythrocytes induced by pulsed rf electrical fields. AB - The shape change of sickled erythrocytes induced by electrical pulses was investigated under various experimental conditions using different suspending media. The purpose of this research is to find a set of conditions under which sickled erythrocytes from an individual with sickle cell anemia (SS erythrocytes) can be desickled with minimal damage to the membrane. Previously we observed, using 0.9% NaCl solution, that rounding of the SS erythrocytes eventually led to hemolysis even when the field was turned off. Using short pulses, we have now observed that the rounding of sickled erythrocytes does not necessarily lead to hemolysis if buffer solutions such as Hanks' solution are used. The cause of the shape change is believed to be the perforation of the erythrocyte membrane by the potential induced by applied fields. The field-induced membrane potential has been calculated for spherical cells and infinitely long cylinders. Using an ellipsoid of revolution as a model, we generalize the calculation of membrane potential. These calculations indicate that a transverse field is less effective in inducing a potential than a longitudinal field. PMID- 3863130 TI - Binding of a possible transition state analogue to the active site of carboxypeptidase A. AB - The mode of binding of the competitive inhibitor 2-benzyl-3-formylpropanoic acid to the active site of carboxypeptidase A has been studied by x-ray diffraction methods to a resolution of 1.7 A. The actual species bound to the enzyme was determined to be the gem-diol resulting from covalent hydration at the aldehyde carbonyl. Details relating to the process of association of inhibitor with enzyme are unknown at this time: the free aldehyde could initially bind to the enzyme and subsequently undergo catalytic hydration; or, the hydrate itself could be the species initially binding to the enzyme, because it does exist to a high degree (25%) in aqueous solution. Nevertheless, the structure of the complex reported is reminiscent of a possible tetrahedral intermediate that would be encountered in a general base hydrolytic mechanism. Of course, other mechanistic proposals, such as the anhydride pathway, cannot be ruled out simply on the basis of the structure of this enzyme-inhibitor complex. PMID- 3863132 TI - Maize mitochondria synthesize organ-specific polypeptides. AB - We detected both quantitative and qualitative organ-specific differences in the total protein composition of mitochondria of maize. Labeling of isolated mitochondria from each organ demonstrated that a few protein differences are due to changes in the polypeptides synthesized by the organelle. The synthesis of developmental stage-specific mitochondrial polypeptides was found in the scutella of developing and germinating kernels. The approximately 13-kDa polypeptide synthesized by mitochondria from seedlings of the Texas (T) male-sterile cytoplasm was shown to be constitutively expressed in all organs of line B37T tested. Methomyl, an insecticide known to inhibit the growth of T sterile plants, was shown to be an effective inhibitor of protein synthesis in mitochondria from T plants. PMID- 3863133 TI - Heat shock increases the synthesis of the poly(A)-binding protein in HeLa cells. AB - When HeLa cells are shifted from 37 degrees C to 45 degrees C, the synthesis of two proteins increases. Their approximate molecular masses are 73 kDa [heat shock protein 73 (hsp73)] and 87 kDa (hsp87), respectively. One of them, the hsp73, shows a specific affinity for poly(A). This protein is identical with a protein regularly found associated with translatable mRNAs in all vertebrate cells. It is well characterized by its high affinity to the poly(A) sequence of polyribosomal mRNA, and it occurs free in cytoplasm. hsp73 and the poly(A)-binding protein have the same isoelectric point and molecular size. The peptide analysis indicates that they are identical. PMID- 3863135 TI - Expression sequences of cell adhesion molecules. AB - A reexamination of the expression of cell adhesion molecules (CAMs) during the development of the chicken embryo was carried out using more sensitive immunocytochemical techniques than had been used previously. While the previously determined sequence of CAM expression was confirmed, neural CAM (N-CAM) was also detected on endodermal structures such as the lung epithelium, gut epithelium, and pancreas and on budding structures such as the pancreatic duct and gall bladder. It was also found on ectodermal derivatives of the skin. In most of these sites, N-CAM expression was transient, but in the chicken embryo lung, the epithelium remained positive for N-CAM and liver CAM (L-CAM) into adult life. Thus, at one time or another, both of these primary CAMs can be expressed on derivatives of all three germ layers. At sites of embryonic induction, epithelial cells expressing both L-CAM and N-CAM, or L-CAM only, were apposed to mesenchymal cells expressing N-CAM. Examples included epiblast (NL) and notochord (N); endodermal epithelium (NL) and lung mesenchyme (N); Wolffian duct (NL) and mesonephric mesenchyme (N); apical ectodermal ridge (NL) and limb mesenchyme (N); and feather placode (L) and dermal condensation (N). The cumulative observations indicate that cell surface modulation of the primary CAMs at induction sites can be classified into two modes. In mode I, expression of N-CAM (or both CAMs) in mesenchyme decreases to low amounts at the cell surface, and then N-CAM is reexpressed. In mode II, one or the other CAM disappears from epithelia expressing both CAMs. As a result of the primary processes of development, collectives of cells linked by N-CAM and undergoing modulation mode I are brought into the proximity of collectives of cells linked by L-CAM plus N-CAM or by L-CAM undergoing modulation mode II. Such adjoining cell collectives or CAM couples were found at all sites of embryonic induction examined. PMID- 3863134 TI - Cell surface antigen of human neuroblastomas is related to nuclear antigen of normal cells. AB - The localization of MC25, an antigen first detected on the surface of human neuroblastoma cells, was determined in cultured cells and tissues. Neuroblastoma cell lines (15/17) express the antigen on the surface and in the cytoplasm (scMC25+), whereas 156/160 cell lines derived from other normal and malignant human cell types are scMC25-. However, MC25 is found in the nucleus of scMC25- cells (nMC25+), presenting a discrete granular pattern. In scMC25+/nMC25- neuroblastoma lines, apparent antigen shifting from the cell surface/cytoplasm to the nucleus accompanies variant formation, which represents a transition in the neuronal differentiation program of these cells. Results of immunohistochemical studies with human tissues parallel the findings with cultured cells. Almost all cell types are scMC25-/nMC25+; basal cells of the epidermis are the only cells constitutively expressing cMC25; and a population of neurons are the only scMC25 /nMC25- cells. Alternative localization of MC25 to different cellular compartments and antigen shifting are reminiscent of the behavior of certain developmentally regulated antigens in Drosophila and Xenopus. PMID- 3863136 TI - Is human X chromosome inactivation a sex-determining device? AB - The evolutionary function of X chromosome inactivation is thought to be dosage compensation. However, there is, at present, little evidence to suggest that most X chromosome-linked genes require such compensation. Another view--that X chromosome inactivation may be related to sex determination--is examined here. Consider a hypothetical DNA sequence regulating a major structural gene concerned with the determination of maleness. If this regulatory sequence occurs in both X and Y chromosomes and if its copy number in the Y chromosome is significantly greater than in the X chromosome, then the male-determining properties of the Y chromosome could be attributed to this higher copy number. On the other hand, if the Y chromosome has the same copy number of this sequence as the X chromosome, it is difficult to see how determination of two sexes would occur under such circumstances because XX and XY genomes would then be indistinguishable in this regard. Such a situation seems to occur in the human species with respect to the banded krait minor satellite, a repetitious DNA sequence associated with sex determination. This apparent difficulty may be resolved if X chromosome inactivation renders regulatory as well as structural genes nonfunctional and thereby brings about a significant reduction in the effective copy number of X chromosome-linked DNA sequences concerned with sex determination. It is suggested that X chromosome inactivation brings about, in this manner, a critical inequality between XX and XY embryos and that sex determination in humans is a consequence of this inequality. An analogous situation appears to exist in certain insects in which inactivation of a haploid set of chromosomes (and presumably, therefore, a 50% reduction in the effective copy number of most genes) is associated with maleness. If this line of reasoning is correct, it would suggest that sex determination may be the primary function of X chromosome inactivation. PMID- 3863137 TI - Regulated expression of ras gene constructs in Dictyostelium transformants. AB - Constructs were made in which approximately equal to 500 base pairs of the 5' flanking region of the ras gene of Dictyostelium discoideum and variable amounts of the coding region were linked to a ras cDNA in a transformation vector. These constructs then were used to transform Dictyostelium cells and their regulation was examined. In Dictyostelium transformants, transcripts from the ras gene constructs were found at high levels in cells in fast-shaking cultures containing cAMP, whereas transcripts were either not detectable or present at very low levels in cultures lacking exogenous cAMP. In slow-shaking culture, a significantly lower level of ras RNA was detected. When normal developing aggregates were dissociated, RNA from the ras constructs decreased rapidly but then reaccumulated in the presence of cAMP. These results show that the sequences necessary for the response to external cAMP are present within an approximately equal to 650-base-pair region upstream from the ATG start codon and/or within portions of the protein-coding region. Moreover, the proper regulation of ras gene expression in high-copy-number transformants suggests that trans-acting factors which may control transcription are not limiting. Vector constructs were also examined in which the cDNA was present in the opposite orientation compared to the gene fragment (antisense orientation). When these were transfected into cells, no transformants were obtained, suggesting that expression of the ras gene is essential for vegetative growth. PMID- 3863138 TI - Gene amplification: an example of accelerated evolution in tumorigenic cells. AB - During selection for methotrexate resistance, tumorigenic CHEF/16 cells and derivatives from CHEF/16 tumors underwent amplification of the dihydrofolate reductase gene (DHFR) at accelerated rates compared with closely related nontumorigenic CHEF/18 cells. "Dot blot" analysis showed that the CHEF/16 cells contained many more copies of the DHFR gene than did the CHEF/18 cells, when assayed at similar elevated levels of methotrexate resistance. Chromosome analysis of cell samples taken at several time points during amplification revealed large differences between the nontumorigenic CHEF/18 cells and the two tumorigenic cell lines. The tumorigenic cells developed few chromosome rearrangements over a 4-log increase in methotrexate resistance, other than increased length of a single chromosome, which was shown by in situ hybridization to contain most or all of the amplified DHFR gene copies. In contrast, the CHEF/18 cells underwent complex, progressive changes in almost every chromosome, and in situ hybridization suggested a dispersed pattern of gene amplification. The data support the hypothesis that unregulated amplification is a pathological process, occurring readily in neoplastic but rarely in normal cells, that together with other chromosomal disturbances contributes to the rapid evolution and progression of cancer. PMID- 3863139 TI - Membrane lipid changes in laminectomized and traumatized cat spinal cord. AB - Free fatty acid (FFA), diacylglycerol (acyl2Gro), icosanoid, phospholipid, and cholesterol levels were measured in samples of cat spinal cord (L2) that were frozen in situ with vertebrae intact, at various times after laminectomy, and at various times after laminectomy with compression trauma to the spinal cord. Tissue samples either were grossly dissected into gray and white portions prior to FFA and acyl2Gro analysis or were used whole for the other lipid types. Gray matter total FFA and acyl2Gro values were abnormally high in samples frozen with vertebrae intact and in those frozen 10 min after laminectomy. This indicates that the surgical procedures resulted in some perturbation of spinal cord lipid metabolism. If the experimental animals were allowed to recover for 90 min after laminectomy, the gray matter FFA and acyl2Gro levels were greatly reduced. Compression of the spinal cord with a 170-g weight for 1, 3, or 5 min (following 90 min of recovery after laminectomy) caused significant elevations of total FFA, acyl2Gro, icosanoids, and phosphatidic acid and significant decreases in ethanolamine plasmalogens and cholesterol. Among the total FFA, arachidonic acid was found to have the largest relative increase. Comparisons of gray and white matter demonstrate that, in general, changes in white matter FFA and acyl2Gro were similar to those seen in gray matter. However, the increases in white matter levels of FFA and acyl2Gro were delayed, occurring after the elevations in gray matter. For some FFA (e.g., arachidonate), the rise in white matter occurred as gray matter levels were decreasing. This suggests that the initial alteration in spinal cord lipid metabolism after trauma was in gray matter but, with time, spread radially into white matter. PMID- 3863140 TI - Molecular heterogeneity of variant isovaleryl-CoA dehydrogenase from cultured isovaleric acidemia fibroblasts. AB - Variants of isovaleryl-CoA dehydrogenase (IVDHase, EC 1.3.99.10) in 15 isovaleric acidemia fibroblast lines were analyzed using [35S]methionine labeling, immunoprecipitation with anti-rat IVDHase antiserum, and NaDodSo4/polyacrylamide gel electrophoresis. Five distinct variants of IVDHase were detected. The molecular size of variant 1 (43 kDa) was indistinguishable from that of normal IVDHase (43 kDa), although the activity of this enzyme was as deficient (0-2.2% of normal control) as that of any other variant. It was synthesized as a precursor (45 kDa), which is the case for normal IVDHase. Variant 2 was synthesized as a 42-kDa precursor, but only a small portion of it was processed to the mature variant form (40 kDa). Variant 3 (41 kDa) was synthesized as a 43 kDa precursor. Variant 4 (40 kDa) was synthesized as a 42-kDa precursor that was readily processed to the mature form. In cells with variant 5, no material that crossreacted with the anti-rat IVDHase antibody was detected. These results suggest that variant 1 may be due to a point mutation, while variants 2-4 may be encoded by a different mutant IVDHase allele that causes the premature termination of translation, although other complex mechanisms are possible. A deletion, a nonsense mutation close to the NH2 terminus or an extremely labile mRNA may give rise to variant 5. PMID- 3863141 TI - Gene mapping and leader polypeptide sequence of human glucocerebrosidase: implications for Gaucher disease. AB - Analysis of immunologic cross-reacting material in Chinese hamster-human somatic cell hybrids allowed assignment of the structural gene for glucocerebrosidase (glucosylceramidase; beta-D-glucosyl-N-acylsphingosine glucohydrolase, EC 3.2.1.45) to chromosome 1 bands q21-q32. In situ hybridization of a radiolabeled human glucocerebrosidase cDNA to high resolution human chromosomes demonstrated that a single locus encoding glucocerebrosidase is on 1q21, adjacent to a region of chromosome 1 (1qh) abundant in structural heteromorphisms. We also have identified a hydrophobic leader polypeptide encoded by this locus, permitting a more complete description of the biosynthesis of the enzyme. These results suggest that the type-specific protein polymorphisms in Gaucher disease result from mutations at this single locus, whose segregation might be followed by linkage to visible chromosomal heteromorphisms. PMID- 3863142 TI - Differentiating effects of murine nerve growth factor in the peripheral and central nervous systems of Xenopus laevis tadpoles. AB - The present investigation was directed toward exploration of the spectrum of action of murine nerve growth factor (m-NGF) in peripheral cells and neurons in the central nervous system (CNS) of Xenopus laevis tadpoles. It was found that systemic m-NGF injections elicit growth and differentiative effects not only on sensory and sympathetic nerve cells but also on several populations in the CNS. The finding that aminergic and peptidergic neurons in brain centers are highly receptive to m-NGF activity provides evidence for the broad spectrum of action of this molecule in lower vertebrates and calls for a systematic search for these and other putative target cells in the CNS of higher vertebrates. PMID- 3863143 TI - Purification and characterization of a neurite extension factor from bovine brain. AB - The extension of neurites by chicken embryo cerebral cortical neurons can be measured quantitatively at low cell density in serum-free, defined medium. An acidic, heat-stable protein fraction from bovine brain has been shown to have neurite extension activity in this assay. We report the use of reversed-phase HPLC to purify a neurite extension factor from this fraction to apparent homogeneity. The protein was characterized by NaDodSO4/PAGE. In the presence of reducing agents, the protein migrated as a single band, with an apparent molecular weight of 6500. In the absence of reducing agents, the protein showed bands at apparent molecular weights of 6500, 21,000-22,000, 30,000, and 40,000. Reduction and S-carboxymethylation of the protein abolished all biological activity and resulted in a shift of the apparent molecular weight to 11,000. The amino acid composition of the purified neurite-extension factor was nearly identical to that of bovine brain S100 beta. The amino acid sequences of peptides derived from trypsin or cyanogen bromide digests of the protein were identical to those found in S100 beta and accounted for 71 of 91 amino acids in the protein. However, three peptides obtained from cyanogen bromide digestion of the nonreduced protein appeared to be disulfide-linked dimers. Our results indicate that a biological activity, neurite extension, which is critical for the development of the nervous system, is associated with a disulfide form of S100 beta. PMID- 3863144 TI - Cerebellin: a quantifiable marker for Purkinje cell maturation. AB - The cerebellum-specific hexadecapeptide cerebellin has been localized by immunocytochemical means to the perikarya and dendrites of cerebellar Purkinje cells. Biochemical analysis using ion-pairing HPLC shows cerebellin to first appear 5 days after birth, whereafter levels rise to a maximum at 25 days postpartum, and then decline to stable adult values. This same pattern of development occurs with a lag of approximately 5 days for the major metabolite of cerebellin, des-Ser1-cerebellin. The immunocytochemical picture of cerebellin in developing Purkinje cells mirrors the biochemical data. These results show that cerebellins represent unique quantifiable markers for the investigation of Purkinje cell maturation and lend support to the feasibility of using unique endogenous peptides to chart neurodevelopment. PMID- 3863145 TI - Selective expression of cell surface antigens on human haemopoietic progenitor cells. PMID- 3863146 TI - Loss of adhesion of erythrocyte precursors to fibronectin during erythroid differentiation. PMID- 3863147 TI - Maintenance of normal and abnormal hemopoietic cell populations in long-term cultures of CML and AML marrow cells. PMID- 3863148 TI - Demonstration of commitment by K562 human erythroleukemia cells. AB - Commitment, i.e. the decision to express a differentiated phenotype and to terminate proliferation irreversibly in the absence of inducer, was investigated in K562 human erythroleukemia cells. Cells were cultured for 0, 1, 2, 3, or 4 days with inducer and then plated in medium containing methylcellulose without inducer. Daily following plating, hemoglobin content was scored by benzidine staining and growth was assessed by estimating cell number per colony. With all inducers used, three types of colonies were found, those containing only benzidine positive cells, those containing only benzidine negative cells, and those containing both benzidine positive and benzidine negative cells (mixed colonies). Thymidine produced a progressive increase in the percentage of positive and mixed colonies and a progressive fall in the percentage of negative colonies. Whereas negative colonies grew at an exponential rate with a generation time of about 20 hours, positive colonies reached an average maximum size of 16 cells, representing a total of four divisions. Butyrate had a similar effect except that the rise was greater for mixed colonies than for positive colonies and the plateau in positive colony size was less evident. In contrast, CO2 depletion or hemin treatment induced an increase in the fraction of cells staining benzidine positive which was lost rapidly upon removal of the inducing condition. Thus, of the four conditions, thymidine and butyrate caused commitment whereas hemin and CO2 depletion did not. Thus K562 cells, like Friend cells, demonstrate commitment, but, unlike Friend cells, demonstrate a significant rate of commitment in the absence of inducer and hence form a significant percentage of mixed colonies with or without inducer. PMID- 3863149 TI - Positive and negative regulation of specific gene expression by the tumor promoter TPA in human erythroleukemic K562 cells. AB - The potent tumor promoter 12-O-tetradecanyl-phorbol-13-acetate (TPA) has been shown to have profound effects on many mammalian cell types grown in tissue culture. In the human erythroleukemic cell line K562, TPA causes inhibition of cell growth, attachment to plastic dishes and a flat, irregular cell morphology. Accompanying these changes is a reduction in the expression of two cell surface glycoproteins, Gp-105 and glycophorin, which are specific to intermediate and late stages of erythroid cell development (Fukuda 1981). In this study, we found that TPA treatment leads to a reduction in the incorporation of [35S]-methionine into glycophorin which suggests that regulation occurs at the level of de novo biosynthesis. We also examined the effect of TPA on the biosynthesis of other cellular proteins. We found that TPA treatment leads to a de novo induction of two cytoskeletal proteins, vimentin and actin. To further examine the mechanism of action of TPA, we isolated RNA from K562 cells, translated it in vitro, and examined the products by immunoprecipitation. TPA was found to rapidly reduce the level of glycophorin mRNA activity; a 5-fold reduction was noted as early as 1 hour after TPA treatment. Concurrently, the level of vimentin mRNA activity increased. By hybridization of a human actin cDNA probe to K562 RNA, we also found that TPA treatment leads to a rapid induction of actin mRNA. These results suggest that some of the effects of TPA, including possibly tumor promotion, may be due to both positive and negative transcriptional regulation of specific genes. PMID- 3863150 TI - Dexamethasone effect on renal prostaglandin-9-ketoreductase activity in the rabbit. AB - The effect of in vivo administration of dexamethasone (1 mg/kg/d for 1 wk) was investigated on the ratio of urinary PGE2/PGF2 alpha excretion and on in vitro cortical prostaglandin-9-ketoreductase (PG-9-KR) activity in rabbits. Dexamethasone treatment decreased PGF2 alpha excretion significantly from 32.87 +/- 8.09 to 19.28 +/- 6.14 ng/mg creatinine, p less than 0.05) without causing a significant change in PGE2 excretion (9.38 +/- 2.48 and 13.53 +/- 5.03 ng/mg creatinine before and after dexamethasone, respectively). The ratio of urinary PGE2/PGF2 alpha increased markedly following glucocorticoid administration (from 0.34 +/- 0.08 to 1.03 +/- 0.32, p less than 0.05). The activity of cytosolic PG-9 KR activity, however, was not significantly different in control and dexamethasone-treated rabbits. It is concluded that the glucocorticoid-induced increase in urinary PGE2/PGF2 alpha ratio is probably unrelated to changes in PG 9-KR activity. PMID- 3863151 TI - Effects of salicylate and indomethacin in nonfebrile rats at different ambient temperatures. AB - The effects of sodium salicylate (SS) and indomethacin (INDO) on rectal temperature (RT) and on prostaglandin (PG) concentration in the anterior hypothalamus of nonfebrile rats exposed to ambient temperatures (AT) of 4 +/- 1 degrees C, 23 +/- 2 degrees C and 34 +/- 2 degrees C were investigated. In rats treated with SS and exposed to AT of 4 degrees C and 23 degrees C, RT decreased by 1-1.5 degrees C (p less than 0.01). On the other hand at AT of 34 degrees C, SS-treated rats had an elevation of RT of 2 degrees C (p less than 0.01). However, in rats treated by INDO, RT did not change, in spite of significant decreases (p less than 0.01) in PGE2 under all three environmental conditions. In SS treated rats a significant decrease (p less than 0.01) of PGE2 was observed only at At 23 degrees C, whereas hypothalamic PGE levels were not inhibited at 4 degrees C or 34 degrees C. This data do not support the hypothesis that PG is the mediator of normal thermoregulation in the rat. The changes in deep body temperature observed in nonfebrile rats treated with salicylate may be related to a mechanism that is not associated with PG cyclooxygenase inhibition. PMID- 3863152 TI - Aggregation of and thromboxane B2 synthesis in platelets from newborn infants of smoking and non-smoking mothers. AB - Cord blood platelet aggregation and thromboxane B2 (TxB2) synthesis were investigated in 20 healthy infants of drug-free healthy mothers with an uncomplicated pregnancy ending at term in a normal vaginal delivery. Eight of the mothers were habitual smokers and the remaining 12 were non-smokers. The platelet count was slightly lower in infants of smoking mothers than in the control infants. There were no differences between the two groups in the qualitative or quantitative aggregation responses (maximal change in optical density) to stimulation by 0.55, 1.1, 3.3 and 6.6 microM adenosine diphosphate, 0.5 and 1.0 mM arachidonic acid (AA) or collagen 1.0 and 5.5 mg/l. Nor was there any difference between the groups in regard to TxB2 synthesis after stimulation by these substances. The amount of TxB2 synthesized merely reflected the occurrence of reversible or irreversible platelet aggregation. Stimulation of platelets by AA induced by far the highest synthesis of TxB2. The generally decreased aggregability of platelets of newborn infants, compared with that in adults, was confirmed in this study. No effect of maternal smoking during pregnancy on the prostaglandin-dependent pathway of aggregation of cord blood platelets was demonstrated. PMID- 3863153 TI - Is hyperventilation a physiologically significant stimulus for prostaglandin release in the human pulmonary vascular bed? AB - The influence of hyperventilation on the pulmonary prostaglandin (PG) release was studied in healthy volunteers. Hyperventilation was forced by adding 8% CO2 to the inhaled air and arterial and mixed venous blood was sampled for radioimmunoassays of 6-keto-PGF1 alpha and PGE2. The increased ventilation did not alter the arterio-venous PG concentration differences suggesting that hyperventilation accompanying the activation of chemoreceptors is not a physiologically significant stimulus for the pulmonary PG release in man. PMID- 3863154 TI - The significance of CA19-9 tumor antigen in the serum of patients with carcinomas. AB - The concentration of serum CA19-9TM in 101 patients with colorectal adenocarcinoma (CRC), and 109 patients with carcinomas of lung, breast, stomach and pancreas and hepatoma, and 40 normal healthy controls including an equal number of smokers and nonsmokers were determined by solid phase radioimmunoassay of CA19-9 assay kits (Centocor). Of the normal sera, only 1 out of 40 (2.5%) was over 37.6 U/ml. No significant difference of CA19-9 levels was found between smokers (14.4 +/- 9.0 U/ml) and non-smokers (16.0 +/- 10.2 U/ml) of normal control. In patients sera, the mean value of CA19-9 levels was significantly higher in patients with Dukes B (P less than 0.05) and in patients with Dukes C and D (P less than 0.001) than the normal healthy control (15.2 +/- 10.2 U/ml). Analysis of serum CEA concentrations has shown a similar result in patients with all Dukes staged CRC. The CA19-9 levels was also significantly elevated in patients with gastric carcinoma, lung carcinoma, hepatoma, and especially in patients with pancreatic carcinoma (P less than 0.0001). The levels of CA19-9 elevated in 50% (22/44) of patients with advanced CRC while the elevation was 8 of 43 (18.6%) patients with localized CRC. A comparison of CA19-9 and CEA assays showed no correlation (r = 0.125) between the two assays. Although the CA19-9 assay (26.4%) was less sensitive than the CEA assay (51.7%), the specificity of CA19-9 assay (97.5%) was better than that of CEA assay (87.5%).(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863155 TI - Handedness, language dominance and aphasia: a genetic model. AB - A simple two-allele Mendelian model of the genetics of handedness is described and fitted to data in the literature. The model proposes that there are two alleles, D (dextral) and C (chance), the homozygous DD genotype producing only right-handers (directional asymmetry), the homozygous CC genotype producing a racemic mixture of 50% right-handers and 50% left-handers (fluctuating asymmetry), and the heterozygote, DC, being intermediate between the homozygotes and producing 25% left-handers, and 75% right-handers. It is also suggested that the true population incidence of left-handedness is 7.75%, deviations from this figure being due to either criterion shifts or selection biases. The same model is then fitted, by means of a number of minor conceptual extensions, to data from the literature on the relationship of handedness to language dominance, acute and permanent aphasia, and visual processing dominance. PMID- 3863156 TI - Can linkage and marker association resolve the genetic aetiology of psychiatric disorders? Review and argument. PMID- 3863157 TI - Bulimia and depression. AB - In recent years several lines of evidence have emerged suggesting that eating disorders in general, and bulimia in particular, are in some way linked to affective illness. However, there are few data on the frequency of affective syndromes among patients who have anorexia nervosa or bulimia. This report describes the results of semistructured interviews using the Schedule for Affective Disorders and Schizophrenia (SADS) to evaluate the frequency of the current and lifetime diagnoses of affective illness among 50 female patients meeting DSM-III criteria for bulimia. Seventy percent of the patients had, at some time during their lives, met Research Diagnostic Criteria (RDC) for an episode of major depression and 88% had met RDC at some time during their lives for some affective disturbance. The implications of this high frequency of affective disturbance among patients with bulimia are discussed. PMID- 3863158 TI - [Clinical experiences with beta-tricalcium phosphate in oral surgery (I)]. PMID- 3863160 TI - [Removable metal-ceramic bridges for periodontal prevention (II)]. PMID- 3863159 TI - [Systematization of amalgam filling technic--cutting, manipulation and polishing amalgam fillings with the SAP-IN system (I)]. PMID- 3863161 TI - [New concepts in periodontics (II)]. PMID- 3863162 TI - [Diagnosis of double root canals and double-rooted anterior teeth using the Walton projection]. PMID- 3863163 TI - [Interpretation of radiographs]. PMID- 3863164 TI - [Importance of a systematic education for the image of today's dental assistant]. PMID- 3863165 TI - [Sectional dental preparation for macroscopic overview with simultaneous optimal infiltration of the imbedding media for microscopic analysis]. PMID- 3863166 TI - [Clinical experiences with beta-tricalcium phosphate in oral surgery (II)]. PMID- 3863167 TI - [Patient-oriented wound care after dental surgical procedures]. PMID- 3863168 TI - [Systematization of amalgam filling technics--cutting, manipulation and polishing of amalgam fillings with the SAP-IN system (II)]. PMID- 3863169 TI - [Pins. A useful aid in restorations with problems in altered rehabilitation]. PMID- 3863170 TI - [Interpretation of radiographs]. PMID- 3863172 TI - [Automatic data processing applications in dental practice]. PMID- 3863171 TI - [Single model photography with a modified reproduction device]. PMID- 3863173 TI - [Facial pain--differential diagnosis for the dentist (I)]. PMID- 3863174 TI - [Self-prep-trainer--a didactic aid for student instruction]. PMID- 3863175 TI - [Infection of the periapex and its treatment with Gangraena Merz root canal filling paste]. PMID- 3863176 TI - [Preprosthetic orthodontics (VII)]. PMID- 3863177 TI - [Interpretation of radiographs]. PMID- 3863178 TI - [Diagnosis of premolars with multiple canals using radiography]. PMID- 3863179 TI - [Equipping dental treatment rooms in old age homes and nursing homes]. PMID- 3863180 TI - [Pain control in dental and oral medicine with a soft laser]. PMID- 3863181 TI - [Facial pain. Differential diagnosis for the dentist (II)]. PMID- 3863182 TI - [Pain relief in dental practice (I)]. PMID- 3863183 TI - [Caries prevention--it is not possible without fluoride]. PMID- 3863184 TI - [Why do we question patients]. PMID- 3863186 TI - [Diurnal rhythm and the effect use of therapeutic drugs]. PMID- 3863185 TI - [Hygiene of the suction sink]. PMID- 3863187 TI - [Elimination of pain in dental practice (II)]. PMID- 3863188 TI - [Problem: smoking in the office]. PMID- 3863189 TI - [Care of hand- and angle-pieces]. PMID- 3863190 TI - [Development of the dental instrument cabinet to a rational team combination cabinet]. PMID- 3863191 TI - [History of surgery mechanics]. PMID- 3863192 TI - [Orthodontic closure of gaps in the maxillary anterior region in combination with the Kole corticotomy in a 21-year-old patient (case report)]. PMID- 3863193 TI - Osteosarcoma development following single inhalation exposure to americium-241 in beagle dogs. AB - Young, mature Beagle dogs underwent single inhalation exposure to respirable aerosols of 241AmO2 to determine the radiation dose distribution to tissues. The dogs were serially sacrificed to assess the clearance of 241Am from the lung, the rate of translocation to internal organs, the pattern of retention in the organs, and the rates and modes of excretion. Americium dioxide was relatively soluble in the lung, leading to the translocation of significant quantities of 241Am to bone and liver, thus delivering radiation doses to these tissues nearly equal to that received by the lung. Osteoblastic osteosarcomas developed in four dogs surviving more than 1000 days after exposure. Histologically, all of the osteosarcomas were associated with areas of radiation osteodystrophy characterized by bone infarction, peritrabecular new bone formation, marrow fibrosis, and microresorptive cavities. The retention and translocation of inhaled 241Am in dogs is similar to that of man, indicating that 241Am inhaled by humans may potentially result in significant risk of bone tumor development. PMID- 3863195 TI - The effects of PGD2 and 9-deoxy-delta 9-PGD2 on colony formation of murine osteosarcoma cells. AB - Effects of antineoplastic prostaglandins (PG), PGD2 and 9-deoxy-delta 9-PGD2, on colony formation of cloned Dunn osteosarcoma (TA 102), normal Swiss 3T3 and V-79 cell lines were evaluated. PGD2 significantly inhibited the colony formation of TA 102 cells in a dose-dependent manner at concentrations between 0.5 and 5 micrograms/ml. The IC50 value was calculated to be 0.72 microgram/ml. A dose dependent inhibition of TA 102 colony formation was also observed with 9-deoxy delta 9-PGD2 between 0.01 to 1 microgram/ml, the IC50 value being 0.22 microgram/ml. These prostaglandins did not exert cytocidal effects in vitro on Swiss 3T3 cells at concentrations between 0.01 to 1 microgram/ml. The two agents had no significant cytocidal effects on V-79 cells except for 9-deoxy-delta 9 PGD2 at a concentration of 5 ug/ml. These results suggest that PGD2 and 9-deoxy delta 9-PGD2 are considered to have cytocidal activity on Dunn osteosarcoma cells in dosages which do not affect non-malignant cells. PMID- 3863194 TI - Hypoxia enhances prostaglandin synthesis in renal mesangial cell cultures. AB - In view of recent findings which suggest that renal prostaglandins mediate the effect of hypoxia on erythropoietin production, we have studied whether hypoxia is a stimulus for in vitro prostaglandin synthesis. Studies were carried out in rat renal mesangial cell cultures which produce erythropoietin in an oxygen dependent manner. Production rates of PGE2 and in specified samples also of 6 keto-PGF1 alpha, as a measure of PGI2, and PGF2 alpha were determined by radioimmunoassay after incubation at either 20% O2 (normoxic) or 2% O2 (hypoxic) in gas permeable dishes for 24 hrs. Considerable variation in PGE2 production was noted among independent cell lines. PGE2 production appeared to be inversely correlated to the cellular density of the cultures. In addition, PGE2 production was enhanced in hypoxic cell cultures. The mean increase was 50 to 60%. PGF2 alpha and 6-keto-PGF1 alpha increased by about the same rate. These results indicate that hypoxia is a stimulus for in vitro prostaglandin production. PMID- 3863196 TI - Effect of prostaglandin E2 on the electrical activity of cat isolated stomach muscle. AB - Prostaglandins (PGs) are believed to be present in the gastrointestinal tract and to increase the tone of longitudinal muscle layer. However the influence of PGs on the gastric slow wave (SW) is not clarified yet. We therefore investigated the effect of prostaglandin E2 (PGE2) on the electrical and the mechanical activities of feline isolated stomach muscle strips (7 X 1.5 cm), using five capillary electrodes (Ag-AgCl) and an isometric force transducer connected to the antral edge. One hundred and ninety-six strips, obtained from the corpus and antrum of 196 anaesthetized cats, were studied in a muscle chamber filled with Krebs solution (pH 7.4, temperature 36 degrees C) bubbled with 5% CO2 in O2. Exogenous PGE2 concentration-dependently increased the gastric SW frequency without affecting the spike and mechanical activities. Indomethacin decreased the SW frequency. These responses to PGE2 or indomethacin were not blocked by phentolamine, propranolol, hexamethonium, atropine or tetrodotoxin. It is therefore suggested that PGE2 facilitates the development of the gastric SW by an action on the muscle that does not involve cholinergic or adrenergic mechanism. PMID- 3863198 TI - [Morphological, biochemical and serologic identification of Streptococcus mutans in children's dental plaque]. PMID- 3863197 TI - Assessment of a two dose scheme of PGE2 gel for preinduction cervical softening. AB - A single dose technique of endocervically administered 0.5 mg PGE2 triacetin gel has been reliably effective for preinduction cervical softening. This study examined the value of a 2 times 0.25 mg dosing scheme over a 12 hour period and compared it with the single dose method. It was concluded that there was no advantage in the two dose scheme and given the potential for contamination or inadvertent rupture of the membranes with more frequent dosing, the single application remains the procedure of choice. PMID- 3863199 TI - [Adhesion of monocytes to endodontic cements: an in vitro assay method]. PMID- 3863200 TI - [Bruxism and its clinical effects on occlusion]. PMID- 3863201 TI - [Biocompatibility and dental metals]. PMID- 3863202 TI - [Bacteremia]. PMID- 3863203 TI - [Giant complex odontoma of the upper jaw]. PMID- 3863204 TI - [Philosophy of dental occlusion]. PMID- 3863205 TI - [The orthopantomographic projection in sialography]. PMID- 3863206 TI - [Morphological aspects of gingival hyperplasia caused by hydantoin]. PMID- 3863207 TI - [Antibiotic use in clinical dentistry]. PMID- 3863208 TI - [Instrumentation of root canals in posterior teeth. Methods]. PMID- 3863209 TI - [Control of bacterial plaque and chlorhexidine]. PMID- 3863210 TI - [Oral leukoplakia. Histopathological study of 31 cases]. PMID- 3863211 TI - [Concepts of fluoridation]. PMID- 3863212 TI - [The edgewise arch and the Harvold activator]. PMID- 3863213 TI - [Application of the Spanish-American Index in municipal primary schools in Buenos Aires (to determine orthodontic anomalies and evaluate treatment needs and priorities)]. PMID- 3863214 TI - [Psychodynamic aspects of orthodontic patients. A psychoanalytic focus]. PMID- 3863215 TI - [New treatment for an extreme Class II, division 1 malocclusion in an adult patient: report of a case]. PMID- 3863216 TI - Imipenem: the first thienamycin antibiotic. PMID- 3863217 TI - Influence of imipenem on the serum resistance of enterobacteriaceae. AB - Following growth in a subinhibitory concentration of imipenem and additional incubation in a 20% dilution of normal human serum (NHS) for 90 minutes, five of 12 serum-resistant strains of enterobacteriaceae showed a decrease in colony forming units of two or more logs of growth compared with the control. Two strains (of Escherichia coli and Enterobacter aerogenes) showed this phenomenon even with incubation in 5% NHS. Treatment with imipenem did not change the serum resistance of the other seven strains (two strains each of Enterobacter cloacae, Klebsiella pneumonia, and Serratia marcescens, and one strain of Proteus morganii). The phenomenon of induced serum susceptibility is dose dependent and reversible. Other beta-lactam antibiotics either caused only a slight decrease of resistance (cefsulodin, cefoxitin, cefuroxime, cefodizime-HR221) or did not influence the serum resistance at all (cefotaxime, mecillinam). Killing of the induced serum-sensitive strains appeared to be antibody dependent. PMID- 3863218 TI - Effect of imipenem/cilastatin on the colonic microflora. AB - The effect of imipenem/cilastatin on the colonic microflora was investigated in 10 patients receiving the drug for six to 11 days. Fecal specimens were cultured quantitatively for aerobic and anaerobic microorganisms before, during, and after therapy. Imipenem/cilastatin treatment was associated with minor changes in the colonic flora. A small decrease in the numbers of enterobacteria, enterococci, anaerobic cocci, and organisms of the Bacteroides fragilis group was observed. After treatment was discontinued, the microflora returned to normal in all patients, and no new colonization with imipenem-resistant bacteria was seen. No patient had Clostridium difficile or its cytotoxin in feces. No adverse gastrointestinal reactions were registered. PMID- 3863219 TI - Pharmacokinetics of imipenem and cilastatin in volunteers. AB - Imipenem/cilastatin sodium consists of imipenem, a broad-spectrum carbapenem antimicrobial agent, and cilastatin sodium, an inhibitor of dehydropeptidase I, the renal enzyme that catalyzes the metabolism of imipenem. When imipenem is administered alone by the intravenous route, the levels excreted in the urine are low and variable (6%-38% of the dose) between subjects. Kinetics of imipenem in plasma are less variable, and the half-life of imipenem in plasma is 1 hr. When imipenem is coadministered with an equal amount of cilastatin, the amount of imipenem excreted in the urine represents 70% of the plasma clearance and the plasma half-life remains at 1 hr. Whether administered alone or with imipenem, the urinary excretion of cilastatin is 70%-80% of the dose administered, and its plasma half-life is also 1 hr. Thus, the pharmacokinetics of both agents are linear across the therapeutic dose range, and no accumulation of these agents occurs for therapeutic regimens. Decreases in renal function slow the elimination of both compounds and require a reduction in dosage when the glomerular filtration rate is less than 30 ml/min per 1.73 m2. PMID- 3863220 TI - Imipenem/cilastatin: rationale for a fixed combination. AB - Imipenem is renally metabolized to the stable open-lactam metabolite by a dipeptidase, dehydropeptidase I, located at the lumenal surface of the proximal tubular cells. In humans the degree of hydrolysis shows marked intersubject variability but minimal intrasubject variability. In healthy subjects the urinary recovery of unchanged imipenem ranged from 5.5% to 42.5% of the dose. Cilastatin inhibits the metabolism of imipenem and increases the urinary recovery of active imipenem to about 70% of the dose when a combination of imipenem and cilastatin in a 1:1 ratio is used. In healthy volunteers, the pharmacokinetics of imipenem and cilastatin are similar, but in patients with renal impairment, cilastatin is eliminated more slowly than imipenem. Both compounds have a high degree of safety. However, very high doses of imipenem induce tubular toxicity in rabbits. That effect can be blocked by using a combination of imipenem and cilastatin. The use of a fixed combination of imipenem and cilastatin is motivated by the increases in urinary recovery of imipenem with the combination and by the elimination of the nephrotoxic potential associated with the administration of imipenem alone. PMID- 3863221 TI - [Alveolar proteinosis associated with chronic myeloid leukemia]. AB - The association of pulmonary alveolar proteinosis with hematologic malignancy is well known. The prognosis, in this peculiar setting, is poor. Yet, few patients have been treated in due time. We report a case of pulmonary alveolar proteinosis associated with chronic granulocytic leukemia. The evolution was fatal in spite of intensive treatment. PMID- 3863222 TI - New horizons in cancer research. PMID- 3863223 TI - The human tumor colony forming assay: review and clinical applications. PMID- 3863224 TI - Disclosure of information concerning chemical hazards in Rhode Island. PMID- 3863225 TI - Surgical neurectomy for the treatment of resistant painful heel. PMID- 3863226 TI - Hemoperitoneum associated with gallbladder rupture. PMID- 3863227 TI - Metastatic malignant melanoma in the mandible. Site is a rare one for the spread of this tumor. PMID- 3863228 TI - Standard T-tube cholangiogram: a safe method of cholangiography. Bacteremia is an unlikely event after T-tube cholangiography. PMID- 3863229 TI - Duodenogastric reflux in patients with upper abdominal complaints or gastric ulcer with particular reference to reflux-associated gastritis. AB - The aim of this survey was to examine the incidence of duodenogastric reflux in patients with abdominal complaints and the relations between the nature and extent of reflux abdominal complaints, the use of drugs, smoking, the drinking of coffee and alcohol and histological changes in the gastric mucosa. A comparison was also made between gastric ulcer patients and patients with upper abdominal complaints with respect to the nature and extent of reflux. The patients examined included 107 with abdominal complaints and 33 with a gastric ulcer. Gastroscopy was performed, followed by determination of intragastric bile acids and lysolecithin and a duodenogastric isotope reflux examination using technetium-99m diethyliminodiacetic acid (Tc-99m HIDA). Intragastric bile acid concentrations in the patients with upper abdominal complaints were in the range 7-21,458 mumol/l (mean 964 +/- 2342 mumol/l) and lysolecithin concentrations in the range 0-1992 mumol/l (mean 70 +/- 273 mumol/l). Isotope reflux was observed in 48% of the patients, the reflux index varying in the range 0-70% (mean 4 +/- 9%). The patients suffered more frequently from nausea, epigastric fullness and flatulence with increasing reflux, as assessed by the various methods used here, but only the increase in epigastric fullness symptoms with rising intragastric bile acid concentrations was statistically significant (p less than 0.05). Similarly the various measures of reflux were higher in those patients taking anticholinergic, psychotherapeutic or cardiovascular drugs, antacids or metoclopramide than in the patients not taking the respective drugs, although the only statistically significant increases were in intragastric bile acids among the users of antacids and metoclopramide (p less than 0.01 and p less than 0.05, respectively) and the increase in lysolecithin concentrations among those taking metoclopramide (p less than 0.05). Those abstaining from alcohol had an intragastric bile acid concentration over 1000 mumol/l significantly more often than those who drank alcohol (p less than 0.05), but smoking and the drinking of coffee showed no significant correlation with duodenogastric reflux. The body gastritis score increased significantly with the extent of isotope reflux and the concentrations of intragastric bile acids (p less than 0.05 and p less than 0.01, respectively), and the latter also showed a significant correlation with serum gastrin (p less than 0.05). No significant relationship could be detected between intragastric lysolecithin concentrations and the gastritis score.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3863230 TI - Hand-mirror cell blast-crisis of chronic myelogenous leukaemia. PMID- 3863231 TI - Survival in 222 adult patients with acute leukaemia treated with intermittent combination chemotherapy programme. AB - 222 patients aged 15-59 years with acute leukaemia were treated with intermittent combination chemotherapy consisting of six 5-day courses of cytotoxic drugs as induction treatment followed by 3 years of maintenance therapy in patients who obtained complete remission (CR). CR was achieved in 50.3% of 161 patients (early deaths included) with acute myelogenous leukaemia (AML). The observed cumulative 5-yr survival rate (observation time 1-12.25 yr) calculated by the life table method was 12% in AML. Among patients who obtained CR, those aged 40-59 yr appeared to fare better than younger patients (5-yr survival: 24%). The M-3 subtype was an adverse prognostic factor. In acute lymphoblastic leukaemia (ALL) the CR rate was 83.6% and the observed cumulative 5-yr survival rate was 14%. Women fared better than men. PMID- 3863232 TI - Maturation changes in relapsing acute myeloid leukaemia. AB - Smears of peripheral blood and bone marrow from 17 patients with acute myeloid leukaemia in relapse were compared with smears made at presentation. We found a change of more than 10 in Maturation Index (MI) in the bone marrow smears of 14 out of 17 patients (82%). Decreases and increases were equally represented. In 5 cases the changes caused assignment to another FAB-group. PMID- 3863233 TI - Acute lymphocytic leukaemia with t(4;11): a clinical subentity. AB - 5 cases of ALL are reported with a t(4;11) chromosomal rearrangement, and 31 cases, investigated before therapy, are reviewed. The (4;11) translocation characterizes a subentity of ALL having the following main features, as compared with ALL in general: 1) Excessively poor prognosis, with a median survival of 6 months despite high remission rates. 2) Low median age of 10 months in children. 3) CNS involvement apparently occurs more frequently. 4) Median WBC is 12 times higher in adults and children, median per cent of blasts in blood 1.5 times higher in adults and 1.8 times higher in children. 5) Splenomegaly is present more frequently. 6) Surface markers are non-B, non-T. The incidence of t(4;11) in ALL varies greatly in the series published so far, from 0.04% to 12%. PMID- 3863234 TI - Cerebrospinal fluid ferritin in patients with leukaemia and malignant lymphoma. AB - To evaluate whether cerebrospinal fluid (CSF) ferritin could be of diagnostic value in haematological malignancies with central nervous system (CNS) involvement, the ferritin concentration was measured in 21 patients with acute leukaemia and lymphoma. Of the 17 patients without CNS involvement, 16 had CSF ferritin values in the normal range (2-7 micrograms/l); 1 patient had an elevated value, probably due to blood contamination in connection with a very high serum ferritin level. 4 patients had tumour invasion of the CNS indicated by the presence of blastic cells in the CSF; CSF ferritin levels in these patients were likewise in the normal range. There was no difference between CSF ferritin values in patients with and without CNS involvement. With the present assay, measurement of CSF ferritin appears to be irrelevant in the evaluation of CNS invasion in haematological malignancies. PMID- 3863235 TI - Plasma fibronectin in acute myeloid leukaemia. AB - In 13 patients with acute myeloid leukaemia (AML), plasma fibronectin (P-FN) was measured before, during and after chemotherapy. Pre-treatment concentrations of P FN were within the reference range and significantly higher than the nadir value (p less than 0.05). A rise in body temperature by more than 1 degree C induced a significant fall in P-FN (p less than 0.05) and transfusion with freshly drawn blood products could prevent this fall. P-FN concentrations were significantly higher in patients obtaining complete haematological remission than in patients in whom remission could not be induced (p less than 0.001). This difference could not be attributed to transfusion or febrile episodes. PMID- 3863236 TI - Bone marrow response to chemotherapy in acute lymphocytic leukaemia and acute non lymphocytic leukaemia. AB - Histopathologic changes in core bone marrow biopsies were reviewed in 33 patients with acute leukaemia during chemotherapy to compare the changes in acute lymphocytic leukaemia (ALL) with acute non-lymphocytic leukaemia (ANLL). Cellular, stromal, and bony changes were evaluated with regard to diagnosis and time of biopsy from initiation of chemotherapy. A significant difference was noted in the plasma cell response. Plasmacytosis was present in 19/19 cases of ANLL, but in only 2/14 cases of ALL. Cellular depletion was also significantly less frequent in ALL. Other stromal changes such as haemorrhage, dilatation of sinusoids and fat regeneration, as well as osteoblastic bone activity occurred with similar frequencies in all cases of treated acute leukaemia. Fibrosis, necrosis, and serous atrophy were uncommon. Differing chemotherapeutic regimens and differing patient ages were both correlated with the plasma cell response, but not with the difference in cellular depletion. PMID- 3863237 TI - Effect of iron supplementation to women with iron deficiency. PMID- 3863238 TI - Iron status of 38-year-old women in Gothenburg, Sweden. PMID- 3863239 TI - Diagnosis of iron deficiency. PMID- 3863240 TI - The relative importance of various laboratory measurements in the diagnosis of iron deficiency. PMID- 3863241 TI - Sideroblast count and examination of bone marrow reticuloendothelial iron in the diagnosis of iron deficiency. PMID- 3863242 TI - Serum ferritin concentration compared to other iron-store variables in the diagnosis of iron deficiency. PMID- 3863243 TI - Prognostic factors and diagnostic criteria in early rheumatoid arthritis. AB - The purpose of the present undertaking was to investigate prognosis of patients with non-specific or rheumatoid arthritis and to study the value of different diagnostic criteria for rheumatoid arthritis (RA) at the beginning of the disease. During the years 1973-75, a total of 442 patients with recent (less than or equal to 6 months) arthritis were studied at the Rheumatism Foundation Hospital, Heinola, Finland. In 1982 the outcome of the 200 patients with the diagnosis of RA or non-specific arthritis was established. Their ages at the time of the first hospitalization were 16-77 years, mean 41. There were 63 men and 137 women. The follow-up period was 6-9 years, mean 7.6. The outcome was measured by joint score, function score, the sum of ESR and CRP, X-ray index, outcome index, which was composed of the preceding ones, ESR, and CRP. The outcome was poor in half of the patients. Ninety-eight signs and symptoms registered at the first hospitalization were compared with the seven facets of outcome using Pearson's correlation coefficient r. The significances of the correlation coefficients were tested by Student's t-test. From 10 to 39 variables correlated highly significantly (p less than 0.001) with the measures of outcome; however, most of the variables had only moderate correlations. At best 14 variables showed 0.40 less than r less than 0.58 when correlated with the outcome index. In conclusion, at the onset of an arthritic disease symmetrical polyarthritis in peripheral joints, serum rheumatoid factor, X-ray changes, morning stiffness, high ESR, and old age correlated best with a destructive joint disease. Plasma proteins as indices of non-specific inflammation mattered less. The relationships between 22 entry variables and the seven facets of prognosis were further evaluated by means of stepwise multiple regression analysis. The results were essentially the same as reached above. One or two variables, most often the number of diseased peripheral joints and serum Waaler-Rose test, always explained the variance better than the number of ARA criteria alone. To study the value of the diagnostic criteria, diagnosis of the patients was made in the following three ways: RA with five or more erosive joints (N = 78), RF-positive and erosive RA (N = 93), RF-positive and nonerosive or RF-negative and erosive RA (N = 125). The patients outside each of the diagnostic groups formed the corresponding control groups.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3863244 TI - [Recognition and significance of hybrid granulocytes in chronic myeloid leukemia]. AB - The demonstration and frequency of mixed granulated, hybrid leukocytes in chronic myeloid leukemia are reported. The cells exhibit basophilic granules, and, in addition, variable quantities of eosinophilic and/or azurophilic (chloroesterase positive) granules. The existence of further subtypes of granules in these cells, such as neutrophilic or tissue mast cell granules, cannot be excluded thus far. All cases under investigation showed such cells, though in varying frequency. Quality and quantities of the granule population in these cells differed considerably. This is interpreted as an expression of tumor cell heterogeneity, which represents a general criterion of malignant neoplasias. The cells under discussion may be termed hybrid or chimeric, since they are characterized by the co-expression in the same cells of markers (granules) normally subject to lineage specificity. Therefore, the cells represent the phenomenon of "lineage infidelity". Thus far, "lineage infidelity" has been found only with blast cell leukemias, but applies also to chronic myeloid leukemias, as our results show. The occurrence of "lineage infidelity" in segmented end stage cells expresses grave irreversible genetic disturbances of the differentiation program in the progenitors of the hybrid leukocytes. PMID- 3863245 TI - [Septicemia caused by Branhamella (Neisseria) catarrhalis in an immunosuppressed patient]. AB - A case is reported of Branhamella catarrhalis septicemia occurring during the aplastic phase of treatment for acute myeloblastic leukemia. Skin lesions were observed which are ordinarily seen in chronic gonococcal or meningococcal septicemia. The pathogenic role of this agent, which is normally considered nonaggressive, is discussed. PMID- 3863247 TI - [AIDS--acquired immunodeficiency syndrome, its importance for the dentist]. PMID- 3863246 TI - [New conceptual aspects in the diagnosis of fibro-osseous lesions of the maxillofacial skeleton. I. The development of the idea and the conceptual changes]. PMID- 3863248 TI - Antagonistic muscle stiffness and associated reflex behaviour in the pain dysfunctional state. PMID- 3863249 TI - Factors related to selecting a family practice residency. PMID- 3863250 TI - Anesthesia and surgery during pregnancy. PMID- 3863251 TI - Family Practice Residency survey. PMID- 3863252 TI - Genetic "engineering"? PMID- 3863253 TI - Gene synthesis machines: DNA chemistry and its uses. AB - Deoxyoligonucleotides can now be synthesized rapidly and in high yield because of recent advances in nucleic acid chemistry. Key innovations include solid-phase synthesis on silica-based supports and the development of stable deoxynucleoside phosphoramidites as synthons. When incorporated into manual, semiautomatic, or automatic instruments, these new procedures can be used to prepare probes, mixed probes, deoxyoligonucleotides for priming DNA synthesis, analogues of deoxyoligonucleotides, and DNA segments containing more than 100 deoxynucleotides. PMID- 3863254 TI - Gene therapy guidelines approved. PMID- 3863255 TI - Masticatory ability in patients with removable dentures. A clinical study of masticatory efficiency, subjective experience of masticatory performance and dietary intake. AB - One of the functions of the masticatory system is to grind the food, salivate and prepare it for swallowing. Individuals who have lost many teeth or wear removable dentures, both complete and partial, find it more difficult to grind food i.e. they suffer from impaired masticatory efficiency (ME). Some of these subjects have to avoid food-stuffs which are hard and difficult to chew. This could influence the social well-being and may eventually lead to an increased risk of malnutrition. Many different methods have been used to evaluate ME. In most of them the degree to which the masticated food or test material was broken down was measured by fractionating the particles in a sieve system. However, one of the purposes of chewing the food is to enlarge the surface area to be exposed to the digestive juices. A few authors have applied this idea and have calculated ME using the summarized area of the masticated test material. This is physiologically a more correct method. ME was investigated in 19 complete denture wearers who were fitted with new dentures. The subjects were tested twice with the old dentures and 5 times with the new ones. The last test took place about 18 months after insertion of the new dentures. The test material was gelatin hardened with formalin. The breakdown of test material was calculated by fractionating it in a sieve system. ME was also evaluated in two other groups, 43 complete denture wearers, who were in need of new dentures, and 19 subjects who were in need of RPDs in the lower jaw. In these two studies ME was evaluated in two ways. Firstly the summarized area of masticated gelatin particles was calculated and used as a measure of ME. Secondly almonds were used as test material and the breakdown was calculated by fractionating in a sieve system. The subjects were tested on three occasions, before prosthetic treatment and about one and four months after insertion of the dentures. On the first and last occasions the subjective experience of masticatory performance was assessed as well as the dietary intake. The results revealed no systematic change in ME when the 19 subjects were fitted with new complete dentures and when the breakdown of the test material was evaluated by fractionating it in a sieve system.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3863256 TI - [Autogenic anti-idiotypic suppression of autoimmune reactions--a new approach to immunotherapy of experimental leukemia]. AB - Experimental Rauscher's virus erythroleukemia (RVE) was employed to study the immunologic mechanisms by which leukemia develops. Experiments were performed on inbred mice, genetically opposite to the disease induction, namely on highly sensitive BALB/c, resistant C57BL/6 and moderately sensitive BDFI animals. It is shown that RVE resistance is an immunologic phenomenon that results from the functioning of the antileukemic immune defence (ALID) aimed against the tumor specific antigenic complex. Suppression of the ALID stems from autosuppression of the H-2 complex of the histocompatibility antigen system of T suppressors, which leads to the development of the onco-specific complex of autoimmune responses (OSCAR) and to the obligate development of RVE. The recovery of the ALID with OSCAR suppression and RVE regression is a consequence of the development of strictly specific antiidiotypic immune responses (antibodies AIT-anti-OSCAR). It is demonstrated that both passive administration of AIT-anti-OSCAR and induction of their active synthesis brings about a remission of RVE. PMID- 3863257 TI - [Familial myeloproliferative syndrome (study of 4 families and review of the literature)]. AB - The authors describe 4 families whose members showed myeloproliferative diseases. In one of the families, polycythemia vera (PV) was seen in twin brother and sister, in the other one, chronic myeloleukemia (CML) afflicted both daughter and mother, and in the two remaining families PV and CML afflicted two brothers and mother and daughter, respectively. It was established that neutrophil phosphatase activity was lowered not only in the afflicted brother but also in healthy members of the third family. Based on the reported and their own data the authors arrive at the conclusion that familial myeloproliferative diseases occur in rare cases. In all the cases of familial myeloproliferative diseases, the transmission of the illness by heredity was discovered to be impossible. It was also ascertained that transmitted by heredity are only those cell deficiencies of the tissues that later on will be afflicted by leukemia or will develop immunodeficiency manifested by increased mutation of the myelopoietic cells (DNA repair deficiencies) or by inability to eliminate the leukemic cells. PMID- 3863258 TI - [Progress in the chemotherapy of malignant tumors]. PMID- 3863259 TI - Thrombotic complications during L-asparaginase related to protein C deficiency? PMID- 3863260 TI - [Bulimia]. PMID- 3863261 TI - Histocompatibility antigens in essential hypertension and myocardial infarction. PMID- 3863262 TI - A monoclonal antibody (GF 22.1) detecting different patterns of HLA class I cross reactivities at different dilutions. AB - A murine cytotoxic monoclonal antibody (GF 22.1) was produced by Balb/c immunization with GRA human lymphoblastoid cells. HLA-A, B and C blanketing and SDS-PAGE analysis of the immunoprecipitate demonstrated MHC class I structures as the targets. Cytotoxic assays were performed with peripheral blood lymphocytes from 84 unrelated donors and from members of 15 families at different antibody dilutions. Statistical analysis was performed by Fisher test on each dilution separately and by Mann-Whitney U test on the dilutions taken all together. The data suggest the detection of a cross-reacting group (B15, A32, B17, B40/w41 and B21) with high affinity and the inclusion of other antigens (B12, B35, A2, B13, A11 and A24) with a lower affinity. PMID- 3863263 TI - A new DQw1 associated antigen: HLA-DR'Br'. AB - A new DQw1 associated antigen, HLA-DR'Br', has been identified in three Caucasoid families. DR'Br' shows strong association with both class I and class III gene products but cannot be reliably defined in the presence of DR1, DR2, DRw6 or DRw10. PMID- 3863264 TI - Vascular responsiveness of isolated, perfused basilar arteries in dogs and monkeys. AB - A new model of isolated basilar arterial preparation was developed in the dog and monkey. Isolated arteries were perfused at a constant flow rate with Krebs solution and suspended in a bath at 37 degrees C. By inserting the steel cannula into the artery, the space between the luminal wall of the artery and the cannula was narrowed enough to obtain a suitable perfusion pressure during the perfusion. The resting perfusion pressure was maintained at a constant level of 50-100 mmHg. The drug solution was intraluminally administered, and the response was obtained as changes in the perfusion pressure. Responses to 6 vasoactive substances (norepinephrine, 5-HT, PGF2 alpha, histamine, ATP and KCl) were compared between simian and canine basilar arteries. It was demonstrated that in simian arteries, PGF2 alpha was the strongest but 5-HT and norepinephrine induced slight vasoconstriction to the same degree, and in canine basilar arteries, 5-HT induced the strongest constriction but norepinephrine did not produce significant vasoconstriction, and KCl induced marked constriction to the same degree at extremely large doses in both species. It was demonstrated that the cannula inserting method is useful to observe the responses of isolated basilar arteries. PMID- 3863265 TI - [Method for research on the orbicular muscle of the mouth under dynamic and static loads]. PMID- 3863266 TI - [Bacteriocinogen typing of Lactobacillus cultures isolated from the saliva of healthy persons as well as from those suffering from dental caries and periodontal diseases]. PMID- 3863267 TI - [Infrared spectra of the bone tissue in experimentally reproduced diseases of the periodontium]. PMID- 3863268 TI - [Protein buffer in human mixed saliva]. PMID- 3863269 TI - [Assessment of the effectiveness of dental prophylaxis for pregnant women]. PMID- 3863270 TI - [Effectiveness of dental caries prevention when a fluorine deficiency is present]. PMID- 3863271 TI - [Hydrolytic enzyme activity in the mixed saliva of patients with chronic recurrent aphthous stomatitis]. PMID- 3863272 TI - [Changes in the body reactivity of patients with chronic recurrent aphthous stomatitis using different treatment methods]. PMID- 3863273 TI - [Evaluation of the effectiveness of chlorhexidine bigluconate in the combined treatment of inflammatory periodontal diseases]. PMID- 3863274 TI - [Immunological status in periodontal diseases combined with gastric and duodenal peptic ulcer]. PMID- 3863275 TI - [Comparative information value of clinico-laboratory indices in periodontitis]. PMID- 3863276 TI - [Treatment of mandibular fractures with a wire splint reinforced by a fast hardening plastic]. PMID- 3863277 TI - [Treatment of mandibular fractures using hyperbaric oxygenation]. PMID- 3863278 TI - [Clinical x-ray characteristics of the healing of mandibular fractures following the use of helium-neon laser radiation]. PMID- 3863279 TI - [Natural immunity indices of mandibular fracture patients]. PMID- 3863280 TI - [Bone perforation and intraosseous lavage in treating acute osteomyelitis of the mandible]. PMID- 3863281 TI - [Hemosorption in the combined therapy of suppurative-septic processes of the maxillofacial area]. PMID- 3863282 TI - [Dynamics of the blood biochemical indices in patients with odontogenic abscesses and phlegmons]. PMID- 3863283 TI - [Regional intra-arterial administration of drugs in the prevention and combined therapy of inflammatory processes in the maxillofacial area]. PMID- 3863284 TI - [Results of the combined and radiation treatments of patients with cancer of the oral mucosa and lower lip]. PMID- 3863285 TI - [Body reaction to microbial actions in phlegmons of the maxillofacial area]. PMID- 3863286 TI - [Use of helium-neon laser radiation in treating patients with an acute inflammatory process of the maxillofacial area]. PMID- 3863287 TI - [Surgical treatment of disseminated cancer of the buccal mucosa and mandibular alveolar process]. PMID- 3863288 TI - [Embryological prerequisites for the pathogenesis of congenital cleft lip]. PMID- 3863289 TI - [Errors in the diagnosis of salivary gland tumors and the means for their elimination]. PMID- 3863290 TI - [Indications for the replacement of dentition defects based on rheoperiodontographic data]. PMID- 3863291 TI - [Hemodynamics of the periodontium under a varying physical load]. PMID- 3863292 TI - [Effect of polyurethane as a base material on the oral mucosa and the biochemical properties of the saliva]. PMID- 3863293 TI - [Experience in performing 1200 anesthesias on children and adults in outpatient dental practice]. PMID- 3863294 TI - [Clinico-microbiological changes in the oral cavity in chronic hepatitis in children]. PMID- 3863295 TI - [Organization of dental hygiene care for children with central nervous system diseases in outpatient practice]. PMID- 3863296 TI - [Morphological characteristics of the maxillodental system of children 4 to 6 years old with open bite]. PMID- 3863297 TI - [Experience in using dioxidine for treating the operating field in the oral cavity before surgical interventions]. PMID- 3863298 TI - [Treatment of a cavernous hemangioma of the tongue by the prolonged administration of a sclerosing solution via the lingual artery]. PMID- 3863299 TI - [Devices for performing electrophoresis on children following uranostaphyloplasty]. PMID- 3863300 TI - [Volumetric blood flow and capillary permeability in a spontaneous periodontal lesion (experimental research)]. PMID- 3863301 TI - [Salivary protein fractions of Sjogren's syndrome patients]. PMID- 3863302 TI - [Protein metabolic indices of the bones and teeth of rats kept under the conditions of phosphorus manufacture]. PMID- 3863303 TI - [Determination of the residual force of the periodontium in relation to the angle of tooth inclination]. PMID- 3863304 TI - [Morphological changes in the mandibular nerve after increasing the height of the bite on the lateral teeth]. PMID- 3863305 TI - [Local immunity in caries and its complications in somatically healthy persons]. PMID- 3863306 TI - [Lipid metabolic disorders in the pathogenesis of glossalgia]. PMID- 3863307 TI - [Stomatalgia syndrome in patients with the hypochondriac form of schizophrenia]. PMID- 3863308 TI - [Facial pain in arachnoiditis of the posterior cranial fossa]. PMID- 3863309 TI - [Cellular and humoral immunity factors in patients with odontogenic osteomyelitis of the mandible]. PMID- 3863310 TI - [Comparative evaluation of the treatment of patients with acute suppurative diseases of the perimaxillary tissues using laser radiation]. PMID- 3863311 TI - [Oxygen regimen and local volumetric blood flow of the skin during the treatment of perimaxillary phlegmon using hyperbaric oxygenation]. PMID- 3863312 TI - [Use of standard dental splints for treating patients with mandibular fractures]. PMID- 3863313 TI - [Characteristics of the topical diagnosis of foreign bodies in the infratemporal fossa and temporal area]. PMID- 3863314 TI - [Use of auricular acupuncture reflexotherapy in treating Sjogren's disease]. PMID- 3863315 TI - [Use of stereoteleroentgenography for the diagnosis of maxillodental anomalies and deformities]. PMID- 3863316 TI - [Use of Cyadent composite for the temporary protection of prepared teeth]. PMID- 3863317 TI - [Morphofunctional condition of the maxillodental system of preschoolers with a deep prognathic bite]. PMID- 3863318 TI - [Medicogenetic counseling of children with congenital cleft lip and palate--the prevention of congenital pathology]. PMID- 3863319 TI - [Clinical forms of amelogenesis imperfecta]. PMID- 3863320 TI - [Stages in the development of dental outpatient care for children in a large city]. PMID- 3863322 TI - [Results of an 8-year systematic dental hygiene program for children and adolescents dependent on a mobile health unit]. PMID- 3863321 TI - [Pathological changes in the dental pulp and dentin of experimental animals as affected by radiant energy]. PMID- 3863323 TI - [Clinical exfoliative-cytological appearance of the gingiva after abstaining from and administering toothbrush stimulation. Mechanical plaque elimination without a toothbrush as a model for clinically controlled tests]. PMID- 3863325 TI - [Problems of the retro-maxillary abscesses]. PMID- 3863324 TI - [Correlation between tooth crowding and selected dental indices]. PMID- 3863326 TI - [Estrogen receptor status in patients with oral mucosa carcinoma (a brief report)]. PMID- 3863327 TI - [Plastic surgery of the mouth floor from a current viewpoint]. PMID- 3863328 TI - [Factor registration as a prerequisite for therapy of S-sound articulation disorders]. PMID- 3863329 TI - [Results of sociological studies of dental health knowledge and health behavior of a population in a large metropolitan area of new building sites]. PMID- 3863330 TI - [Root canal filling and its significance for outcome evaluation in dentistry]. PMID- 3863331 TI - [Problems of recurrences after surgical treatment of the epulides]. PMID- 3863332 TI - [Initial experiences with a modified method of obtaining transplants in vestibuloplasty]. PMID- 3863333 TI - [Regional changes in the chemical composition of the mandible after tongue reduction. 3: Phosphorus, calcium and nitrogen distribution in the cortex of the mandible]. PMID- 3863334 TI - [Effect of birth weight on the frequency of dysgnathia]. PMID- 3863335 TI - [Radiation dosage in patients undergoing dental radiographic examinations]. PMID- 3863336 TI - [Severe submergence of a deciduous molar--an interesting case]. PMID- 3863337 TI - Rayner lecture 1984. Sophistication in intraocular lens surgery. PMID- 3863338 TI - Histological findings in angulated posterior chamber lenses. AB - The histological observations of 6 cadaver eyes containing a SIMCOE posterior chamber lens are reported. Reduction of loop diameter 10 months after implantation is demonstrated. The cellular response of the local tissue is demonstrated with and without the loop contact. In long term follow up the loop support in the sulcus rim was seen to lead to a canal formation within the ciliary body. Scanning electron microscopy revealed a compact cover around the peripheral end of the loops which showed tight contact to the synthetic material. PMID- 3863339 TI - Scanning electron microscope study on the biodegradation of IOL and suturing materials. AB - The biodegradation of the IOLs (27 cases: mainly prepupillary lens with pupillary fixation, irido-capsular and angle supported lens and a J loop lens for posterior chamber lens) and suturing materials of four cases have been studied by Scanning Electron Microscope (SEM). The longest duration in the eye was 7.5 years and the shortest 0.3 year. The materials used for optics were PMMA with the exception of one case of glass. The materials for haptics were Nylon 6, Isot.PP, PMMA, PVDF, Polyimid and Pt-Ir. The suturing materials were Nylon 6 and Isot.PP. Nylon 6 degraded in the eye and Isot.PP degraded in the corneal tissue. But no biodegradation was observed in Isot.PP, PMMA, PVDF and Pt-Ir in the eye. In our investigations, biodegradation has some relationship to age (over 50 years old), duration (within 7.5 years) and inflammation of the eye, but ultimately biodegradation will depend on the individual situation. Degradation occurs most easily in the curved portion of Nylon 6. PMID- 3863340 TI - Damage to the corneal endothelium by Q-switched Nd:YAG laser posterior capsulotomy. AB - Clinical specular microscopy of the corneal endothelium of eyes immediately before and after Nd:YAG laser posterior capsulotomy revealed apparent endothelial damage. Comparative specular and scanning electron microscopical studies in rabbits showed extensive cell destruction, and clinical observations indicated 'healing' of the lesions by extensions from neighbouring cells. Possible causes of the damage are discussed. PMID- 3863341 TI - Complications of Nd:YAG laser posterior capsulotomy. AB - A number of ocular complications are seen to be associated with the use of Nd:YAG laser for posterior capsulotomy after cataract surgery. We have outlined possible hazards to the cornea, trabecular meshwork, vitreous and intraocular lenses and have discussed their consequences. It would appear that the degree of severity of complications is related to the pulse energy used upon the capsule. PMID- 3863342 TI - Management of the posterior capsule before and after the YAG laser. AB - A retrospective chart review of 2,514 consecutive posterior chamber implants was carried out to assess the management of the posterior capsule when vision loss dictated intervention. The capsulotomy technique used between May 1977 and March 1983 was pars plana posterior capsulotomy (227 eyes). All posterior capsulotomies performed after April 1, 1983 were with the YAG laser (342 eyes). Comparison of the complications with the two methods showed considerable differences. Anterior segment problems appear greater following YAG laser posterior capsulotomy than pars plana posterior capsulotomy, whereas posterior segment complications appear similar in both techniques. Comparison of CME following both techniques indicates that a delay of 6 months or more between cataract surgery and posterior capsulotomy is advisable. PMID- 3863343 TI - Follow-up of 439 Federov Mark I lenses implanted after ICCE, with rationale for change and comparative results at one year. AB - This paper presents the sight threatening complications at one year (439 eyes), four years (320 eyes) and seven years (106 eyes) following ICCE with Federov Mark I lens implantation, together with my rationale for change to the Choyce Mk IX following ICCE and the Pearce Equilimb lens following ECCE. The problems with the Federov Mark I lens relate: (i) to its design, needing a widely open section for insertion; (ii) iris support which provides mobile fixation with potential for macular oedema, retinal detachment, corneal touch and decompensation and eventual iris disintegration with lens dislocation. The complications at one year are then compared with those using 176 Choyce Mk IX and 113 Pearce Equilimb lenses. PMID- 3863344 TI - Discussion of factors responsible for retinal detachments and other late complications after intraocular lens implantation. AB - A comparison of the incidence of the major postoperative complications of lens implant surgery with those of simple intracapsular cataract surgery shows that eyes implanted with pupil supported lenses fare the same or worse as those submitted to extraction alone, whilst eyes implanted with true posterior chamber lenses after extracapsular surgery do better in all observed respects. PMID- 3863345 TI - Manipulation of the iris in extracapsular lens extraction. AB - Successful extracapsular cataract surgery depends on adequate mydriasis, which will facilitate the anterior capsulotomy and provide a full field of view throughout the operation. The surgeon, especially the neophyte, must recognise which irises may present a difficulty in establishing, maintaining, and reversing mydriasis, with or without the introduction of an intraocular lens. The author describes the preliminary assessment of the iris for disease, previous iris surgery, ease of dilatation, and the place of primary iridectomy. Topical and subconjunctival preoperative mydriatics are assessed, and a practical account of the pharmacological, mechanical, and surgical means of maintaining intra operative mydriasis is given. The indication for iridectomy in extracapsular lens extraction with or without an intraocular lens is reviewed, and the postoperative manipulation of the iris is described with reference to the problems caused by rebound mydriasis. PMID- 3863346 TI - Results of implantation in the capsular bag. A short term review of 1,588 cases. PMID- 3863347 TI - Preexisting primary glaucoma and intraocular lenses. AB - Intraocular lens implantation into cataractous eyes that also suffer from primary glaucoma is a rewarding procedure. The need for an IOL in these eyes is even stronger than in otherwise healthy cataractous eyes. With prepupillary IOLs there was a strong reason first to control surgically intraocular pressure prior to cataract surgery with IOL implantation. The advent of retropupillary IOLs has dramatically changed this attitude. Extracapsular cataract extraction (ECCE) and the use of an all-in-the-bag retropupillary IOL is the method of choice. Postoperative medical treatment remains possible as does surgical treatment for the glaucoma. The procedure is suitable for open-angle glaucoma as well as for narrow-angle glaucoma. PMID- 3863349 TI - Lens implantation combined with trabeculectomy. AB - The results in seventeen cases of combined trabeculectomy and posterior lens implantation after extracapsular surgery are presented with a follow-up of three to 17 months. The mean reduction of intraocular pressure was 13 mmHg. There was no relationship between the histological localisation of the filter site and the effectiveness of the operation. As the postoperative inflammation is increased as compared to simple lens implantations, a combined operation is only indicated where no alternative to a filtering operation is possible. The use of an iris suture after iridotomy will prevent a later retraction of the iridectomy limbs. PMID- 3863348 TI - Trabeculectomy, cataract extraction and intra-ocular lens implantation. AB - Seventeen cases of open-angle glaucoma requiring cataract extraction underwent intracapsular cataract extraction, trabeculectomy posterior to the scleral spur, and MK9 intraocular lens insertion. Approximately 50 per cent of the patients achieved intraocular pressures of 18 mm Hg or less without medication two years later. Though implantation reduces the surgical success of the combined operation, it is safe, easy to perform and does not worsen pre-operative levels of intraocular pressure and/or control. PMID- 3863350 TI - Early clinical experience with elastic lens implants. PMID- 3863351 TI - The control of aniseikonia after intraocular lens implantation. AB - This paper reports a study of postoperative refraction and eikonometry of 50 patients who had unilateral cataract extraction with implantation of a pupil supported intraocular lens. The mean postoperative aniseikonia (+/- SD) was 1.97 (+/- 1.82). A statistically significant relationship was shown between anisometropia and aniseikonia. Despite aniseikonia of up to 7.8 per cent there were no diplopia problems as the visual system exhibits a high degree of tolerance. It is concluded that aniseikonia can be controlled to within clinically acceptable limits by the simple calculation of intraocular lens power for isometropia. PMID- 3863352 TI - Capsular fixated posterior chamber lenses in high myopia. PMID- 3863353 TI - Chloroquine stripping of HLA A,B antigens from red cells. PMID- 3863355 TI - Osteogenic osteosarcoma of the calvaria following radiotherapy for cerebellar astrocytoma: report of a case in childhood. AB - Sarcoma as a second malignant neoplasm following radiotherapy is a rare occurrence in childhood. A case of osteogenic osteosarcoma of temporoparietal bone that developed 56 months after irradiation for a cerebellar astrocytoma in a 10-year-old child is reported and the pertinent literature is briefly reviewed. The possibility of an association (in the same patient) between these two rather uncommon lesions is extremely unlikely. Therefore, it is possible that radiotherapy played a role in the induction of the sarcoma. The indolent course of the latter is stressed. PMID- 3863354 TI - Studies on granulocyte functions in patients with chronic myeloid leukemia. AB - Granulocyte functions, viz. endocytosis, NADPH oxidase activity and iodination by leukocytes, were studied in granulocytes isolated from 17 chronic myeloid leukemia (CML) patients at initial diagnosis (stage I), from 10 patients in relapse (stage II), and 10 patients in acute blastic crisis (stage III). The mean phagocytic index of granulocytes from CML patients was similar to the normal value. NADPH activity decreased as the disease progressed. Thus, the amount of formazan produced was lower in granulocytes from patients in stage II (P less than 0.05) and stage III (P less than 0.01) than that produced by normal granulocytes. H2O2-Myeloperoxidase-dependent iodination was found to be significantly reduced in granulocytes from all stages of the disease compared to that of normal, stage I (P less than 0.01), stage II (P less than 0.05) and stage III (P less than 0.01). It thus seems that granulocyte function becomes less efficient as the disease progresses towards acute blastic crisis. Immature cells from the same patients carried out these functions at a more reduced level than did their mature counterparts. PMID- 3863357 TI - [DNA markers, genetic counseling and prenatal diagnosis of hereditary disease. A study of 3 families with Duchenne's muscular dystrophy]. PMID- 3863356 TI - Human osteogenic sarcoma: fine structure of hard tissue areas. AB - The structure of hard tissue areas (with osteoid and calcified matrix) in 10 osteoblastic, chondroblastic, and fibroblastic osteogenic sarcomas was studied in the electron microscope. Neoplastic cells commonly associated with these areas and presumably actively involved in the production of hard tissue were osteoblast like cells types 1 and 3, chondroblast-like cells type 1, and fibroblast-like cells, as defined and characterized in previous studies. The cells differed from those in soft tissue areas of osteogenic sarcomas in but one respect: they usually showed presence of irregular extrusions at their surfaces. Other types of osteoblast-like and chondroblast-like cells occurred rarely or not at all. Two types of multinucleated giant cells were recognized in these areas, one showing a fine structure reminiscent of that in osteoclasts, the other probably being of a neoplastic nature and engaged in the production of the calcifying matrix. The evidence suggested that neoplastic osteoblast-like, chondroblast-like, and fibroblast-like cells as well as certain multinucleated giant cells might all be involved in the mineralization process and/or the formation of osteoid in osteogenic sarcomas. Although phenotypically of highly variable appearance, all these different cells may thus functionally (and probably histogenetically) be closed related. The mineralization process in the tumor tissue appeared to be a modification of what occurs in normal ossification, possibly with an alternative or complementary pathway involving the production of spherical bodies with layered contents. PMID- 3863358 TI - Ultrastructural morphology of leukemic cells from 14 dogs. AB - Transmission and/or scanning electron microscopic features of leukemic cells from seven dogs with myelomonocytic leukemia, four dogs with monocytic leukemia, and three dogs with lymphocytic leukemia were studied. Few ultrastructural features distinguished normal cells from leukemic cells. Nuclear to cytoplasmic asynchrony, abnormal cytoplasmic granules, nuclear pockets, and cytoplasmic fibrillar bundles were seen more frequently in leukemic cells. Small ridges or ruffles and a few microvilli were surface characteristics of cells from dogs with myelomonocytic leukemia. An occasional cell had large undulating ruffles. Cells from dogs with monocytic leukemia and lymphocytic leukemia usually had smoother surfaces. PMID- 3863359 TI - Endothelial monocyte antigens are coded for by loci centromeric of HLA-B. AB - 900 pregnancy sera were screened for monocyte antibodies. 23 sera (2.6%) were found to be reactive with monocytes in an allotypic pattern distinct from blood group ABO, HLA-A,B,C, DR and DQ specificities. Because of strong reactions and high reproducibility, 4 sera with pure endothelial monocyte (EM) reactivity and 2 sera also positive with B lymphocytes of certain donors were selected for population and family studies. The frequency of positive reactions in a panel of 26 random donors obtained with the pure EM sera was 13, 8, 8 and 13% with clearly distinct patterns. Analysis of the tentatively designated EM antigens 1.1, 1.2, 2.1, and 2.2 in 7 families revealed definite segregation with HLA. By means of two crossing-over events within the HLA region the two hypothetical EM loci were localized centromeric of HLA-A and one of both loci centromeric of HLA-B. PMID- 3863360 TI - [Working Group on Clinical Respiratory Physiology, 1984 meeting. Graz, 8-10 November 1984. Abstracts]. PMID- 3863361 TI - [Programmed reproduction in large and medium-sized domestic animals]. PMID- 3863362 TI - [Tooth replacement--when? Differential judgements on indications]. PMID- 3863363 TI - [Current state of the art in the treatment of malignant mouth, jaw and facial tumors]. PMID- 3863364 TI - [Current state of the art in implantology]. PMID- 3863365 TI - [Experiences with a set antibiotic combination of mezlocillin and oxacillin (Optocillin) in jaw surgery]. PMID- 3863366 TI - [Liquid-cooling and hygiene as applied to drills and burs in oral surgery]. PMID- 3863367 TI - [Surface condition of various provisional crown and bridge materials before and after polishing. Scanning electron microscopy study]. PMID- 3863368 TI - [Gangraena-Merz root canal filling paste. Clinical testing by 73 dentists in 1158 patients]. PMID- 3863369 TI - [The Richterator as a splint in myoarthropathies]. PMID- 3863370 TI - [Pre-, peri-, and post-natal damage in the deciduous and mixed dentitions]. PMID- 3863371 TI - [Training for public relations]. PMID- 3863372 TI - [Effect of prevention programs on plaque, gingivitis and caries]. PMID- 3863373 TI - [Physiology of toothache]. PMID- 3863374 TI - [Psychological basis of fear]. PMID- 3863375 TI - [Stress and work demands in dental activities]. PMID- 3863377 TI - [Intraligamentary anesthesia]. PMID- 3863376 TI - [Psychology in the treatment of children]. PMID- 3863378 TI - [New thoughts on the matrix technic]. PMID- 3863379 TI - [Dental preparation technics]. PMID- 3863380 TI - [Primordial cysts or jaw keratocysts]. PMID- 3863381 TI - [Anaerobic infections in the head and neck region]. PMID- 3863382 TI - [Cooperation between otorhinolaryngology and oral medicine]. PMID- 3863383 TI - [Case report of a multiple complex odontoma]. PMID- 3863384 TI - [Processing sensitivity of low precious metal casting alloys]. PMID- 3863386 TI - [Gingiva width and periodontal health]. PMID- 3863385 TI - [Surprisingly high cariogenicity of starchy foods]. PMID- 3863387 TI - [Indications for tooth conservation using surgical technics]. PMID- 3863388 TI - [Computer tomographic description of an osteosarcoma in the mandibular condyle]. PMID- 3863390 TI - [Surface structure of furrowed enamel hypoplasia]. PMID- 3863389 TI - [Surgical coverage of a cheek defect]. PMID- 3863391 TI - [A practical patient-oriented method to document periodontal treatment needs]. PMID- 3863393 TI - [Experiences with aluminum oxide-ceramic implant material]. PMID- 3863394 TI - [Filling of bone defects with granulated calcium-phosphate ceramic. Experimental animal studies and clinical experiences]. PMID- 3863392 TI - [Local treatment with antibiotics and disinfectants of bone infections]. PMID- 3863395 TI - [The analysis of failures as an empiric basis for long-term implant success]. PMID- 3863397 TI - [Implants of hydroxyapatite and titanium]. PMID- 3863396 TI - [Implantology in practical cooperation with other dental professional fields]. PMID- 3863398 TI - [Biologic implant materials in the jaw region: hydroxyapatite and tricalcium phosphate]. PMID- 3863399 TI - [Tricalcium phosphate and hydroxyapatite in clinical use]. PMID- 3863400 TI - [Bone core drilling. An alternative method for implant bed preparation in complicated anatomic situations]. PMID- 3863401 TI - [Feasibility statistics of implants in private practice. Report of experiences over 10 years]. PMID- 3863402 TI - [Histological human and experimental animal studies in the implantation of various alloplastic materials. An attempt at critical comparison]. PMID- 3863404 TI - [Experiences with expert opinion procedures in relation to implant-supported dentures]. PMID- 3863403 TI - [Long-tern results of transdentally fixed replanted teeth after complete traumatic luxation]. PMID- 3863405 TI - [Expert opinion on implantation. Case history evaluation from the viewpoint of the treating dentist]. PMID- 3863406 TI - [Diagnostic principles of jaw function]. PMID- 3863407 TI - [Prosthetic therapy of patients with jaw and face defects]. PMID- 3863408 TI - [Scientific organisation of work between the clinical and technical aspects of care as a teamwork function]. PMID- 3863409 TI - [Scientific organization of work between the clinical and technical aspects of care as a teamwork function (technical portion)]. PMID- 3863410 TI - [Continuing education in practice operations and dental care procedures]. PMID- 3863411 TI - [Continuing education in practice operations and dental care procedures]. PMID- 3863412 TI - [Production and delivery program."Dental wax of the Democratic Republic of Germany"]. PMID- 3863413 TI - [The effect of comprehensive prevention programs on the oral health status of children and adolescents]. PMID- 3863414 TI - [Function, construction and preparation of textbooks for medical education]. PMID- 3863415 TI - [Significance, aims, content and methodology in teamwork--technics]. PMID- 3863416 TI - [Eyelet clasp as a retaining element for an activator appliance in orthodontics]. PMID- 3863417 TI - [Basic technological methods in dental technology]. PMID- 3863418 TI - [Determinant programs and workflow schedules for a rational approach to simple and complex management procedures in dental technical laboratories]. PMID- 3863419 TI - [Secondary reduction of morbidity due to uniform treatment strategies]. PMID- 3863420 TI - [Work with textbooks in lectures and self-study units in medical education]. PMID- 3863421 TI - Cytologically detected chlamydial changes and progression of cervical intraepithelial neoplasias. A retrospective case-control study. AB - Fifty-four patients with Chlamydia-associated changes on the cervical smears, in whom adequate follow-up had been obtained over a two-year period, were investigated. The progression to biopsy-proven cervical intraepithelial neoplasia (CIN) III in this group was 42.6%, significantly higher than the 15.8% progression rate noted in a control group of patients with similar cytologic abnormalities but unassociated with Chlamydia. This finding suggests that Chlamydia may be a cocarcinogen or a potentiating agent in the progression of CIN. PMID- 3863422 TI - Crystals occurring in pulmonary cytology specimens. Association with Aspergillus infection. AB - Birefringent needlelike crystals in rosette or wheat-sheaf-like arrangements were found in pulmonary cytology specimens from 11 of 65 patients who had either sputum cultures positive for Aspergillus or histologically confirmed pulmonary aspergilloma. No crystals were found in specimens from 60 control patients with and without known fungal disease. The crystals were most often associated with A. niger infection (45.4%), followed by A. flavus (16%). Crystals were also observed in one case of A. fumigatus infection and in one case in which the species was not determined. In two cases, crystals were found more than one year before sputum cultures became positive; in one of these patients, a fungus ball was not identified by X ray until five years after the first appearance of the crystals in the sputum. Sixty-four percent of the patients with crystals also showed moderate to severe cytologic atypia. The crystals are thought to be calcium oxalate. We conclude that the presence of birefringent needlelike crystals with rosette or wheat-sheaf-like arrangements in pulmonary cytology specimens is a reliable marker for the presence of Aspergillus infection, which may be detected before cultures are positive or a fungus ball is evident on X ray. PMID- 3863423 TI - The value of provoked expectoration in obtaining sputum samples for cytologic investigation. A prospective, consecutive and controlled investigation of 134 patients. AB - A prospective controlled investigation in 134 consecutive outpatients compared the cytologic adequacy of sputum samples obtained by spontaneous and provoked expectoration. Inhalation of nebulized 10% sodium chloride was used for provoked expectoration. A significantly higher number of adequate samples was produced after provocation, as judged by the presence of alveolar macrophages (X2 = 5.63; p less than 0.02). The improvement in sample adequacy was limited to the nonsmokers and ex-smokers in the study. This result, together with the relatively high cost of cytologic sputum examinations, indicates that provoked expectoration should at least be applied to the collection of sputum samples from nonsmokers and ex-smokers. PMID- 3863424 TI - Cytogenetic diagnosis of cancer from body fluids. AB - Serous effusions from 50 patients suspected of having cancer were subjected to cytogenetic analysis by the use of a simple direct technique. Within 24 hours the specimens were reported as unsatisfactory or as positive or negative for malignancy, according to specific chromosomal criteria, which included hypodiploidy. Reports were sent directly to referring clinicians, who also received independently derived findings from routine cytologic study. The value of cytogenetic analysis was clearly shown in this situation, in which the chromosomal findings took the form of an independent second opinion in clinical assessment. There were no false-positive results in any of the 16 cases diagnosed by cytogenetic analysis. Furthermore, in six of these, the initial cytologic report was equivocal, and the repeat sample from three of these failed to yield material suitable for a definite cytologic diagnosis of malignancy. Negative cytogenetic findings also supported the use of cytogenetic analysis as an adjunct to cytologic examination: 23 of the 24 negative cytogenetic reports proved to be accurate, whereas in 8 of these cases the first cytologic report was equivocal. There was one cytogenetic false negative, in which, after retrospective analysis, chromosomal criteria of malignancy were found. PMID- 3863425 TI - The role of cytology in the diagnosis and follow-up of patients with cervical adenocarcinoma. AB - A review was undertaken of the 121 patients with cervical adenocarcinoma, ranging in age from 10 to 91 years, who had cytology specimens examined in this laboratory. All but two had cervicovaginal smears. Fifty-eight patients had cervical smears taken prior to treatment; 91% of these contained malignant cells. The commonest histologic subtype was mucinous adenocarcinoma (61 patients; 52%), followed by endometrioid carcinoma (26 cases; 22%), adenosquamous carcinoma (16 cases; 14%) and clear-cell carcinoma (12 cases; 10%). The cytologic characteristics were evaluated and correlated with the histopathology. During the follow-up period after definitive treatment, 119 patients had gynecologic smears taken; 24% were positive, representing 64% of those cases with central recurrences. In two patients, the abnormal smear was the first indicator of recurrence. Nine patients had 11 nongynecologic specimens revealing metastatic disease. Notable in this study were the 18 asymptomatic women, of whom 15 also had either no visible cervical lesion or minimal changes associated with benign conditions; cytology was abnormal in all but two. Cytology was effective in detecting disease. Its usefulness continued during the follow-up period in identifying or confirming recurrent or metastatic disease. PMID- 3863426 TI - The "suspicious" gynecologic smear. AB - "Suspicious" gynecologic smears from 842 patients over a seven-year period were analyzed for their causes and outcomes. The frequency of the cytologic diagnosis of "suspicious" ranged between 0.5% in 1979 and 1.44% in 1975 of all smears examined. Review of the smears showed that this classification was used to report a variety of conditions, including equivocal possible precancerous changes as well as the presence of severe inflammation, degenerative or atrophic changes, abnormal glandular cells and metaplasia. The cytologic follow-up, following anti inflammatory or hormonal therapy, showed a conversion to negative findings in 65.1% of all cases, usually within 12 months. In 294 cases, histologic analysis became necessary, revealing precancerous changes or cancer in 147 patients (17.5% of the study group). Smears of postmenopausal women with suspicious glandular or endometrial cells received special analysis. Significant numbers of such cases had histologic findings positive for malignancy (20% of smears with glandular cells and 21.3% with endometrial cells), as did also smears showing post irradiative changes (34.6%) or atrophic and degenerative changes (17.1%). Therefore, "suspicious" smears in these groups were considered to indicate an increased risk of malignancy. A regimen for the proper management of cases with "suspicious" smears has been established. PMID- 3863427 TI - Influence of maternal factors on the postnatal smear. AB - The maternal factors affecting the cytohormonal smear patterns of 200 puerperally fully lactating Nigerian women were studied. Lateral vaginal wall cytosmears obtained from these women during the sixth postnatal week showed a wide range of cytohormonal patterns, depicting varying degrees of epithelial regeneration. Maternal age, parity per se and the mode of delivery were found to be of no statistical significance in the determination of the cytohormonal patterns (0.1 greater than P greater than 0.05). However, the parity of the vaginally delivered patients was a highly statistically significant determinant (P less than 0.001), indicating a cumulative effect of trauma on the regenerative capability of the vaginal epithelium. Furthermore, a highly significant number (P less than 0.001) of these puerperally fully lactating women exhibited a midzone to cyclic cytohormonal smear pattern, with a maturation value greater than 50, thereby reflecting a near-maximal estrogenic activity and a resultant almost fully regenerated, mature vaginal epithelium in these women in the sixth postnatal week. The classical postnatal smear was found in only 36% of these women during the sixth postpartum week as opposed to the 28% previously documented for the first postnatal week. PMID- 3863428 TI - Vaginal and oral cytology of the menopause. A comparative study. AB - A comparative cytologic study was made of the hormonal content of the vaginal and oral mucosa of menopausal women. Twenty-three women between one and ten years (early menopause) and 33 patients more than ten years (late menopause) after cessation of menstruation had oral and vaginal smears taken. Comparable smears from 21 young women, and oral smears from 18 males served as controls. The smears were evaluated by the maturation value method, and averages were established for each group. The vaginal smears had low maturation values of 40 and 22 in the early and late menopausal groups, respectively. In these women, the buccal smears' maturation values were high, above 70. Similar high maturation values were found in buccal smears of the young women and men. It was concluded that the high maturation values found in the oral smears of the menopausal women are not the result of hormonal effect but that of local mechanisms or irritative factors. PMID- 3863429 TI - Diagnostic value of cytology of voided urine. AB - Cytologic examination of the sediment of voided urine is the only noninvasive method of detection, diagnosis and follow-up of tumors of the bladder and other anatomic components of the lower urinary tract. In order to assess the value of cytology of voided urine, we analyzed the diagnostic yield in 203 episodes, each composed of three sediments of voided urine obtained on consecutive days. For each one of these episodes, histologic material was available and was reviewed. Of special interest were 181 instances of primary or recurrent bladder tumors; in 37 of these patients, random biopsies of the bladder were also available for review. The concept of intraurothelial neoplasia (IUN), graded I, II or III, was introduced to describe degrees of atypia in flat urothelium, with IUN grade III corresponding to nonpapillary carcinoma in situ. The results documented that cytology of voided urine is highly reliable in the diagnosis of high-grade tumors, with a sensitivity of 94.2%. In primary flat carcinoma in situ (IUN III), the sensitivity was 100%. The method failed in the recognition of grade I papillary tumors and in about one-third of grade II tumors. There were no false positive results in this study. In the 151 positive cases, the cytologic diagnosis was established on the first specimen in 79%, on the second specimen in an additional 14% and on the third specimen in 7% of cases. These results justify the use of three consecutive daily urine specimens for optimal diagnostic results. There is a remarkable similarity between the presence of cancer cells in voided urine and the DNA ploidy of bladder tumors, as established by Tribukait. The observations reported herein suggest that positive urine cytologies may correspond to aneuploid tumors and hence be not only of diagnostic but also of prognostic value. A direct proof of this hypothesis is under investigation; the results of this study justify the need for a field trial of an automated image analysis diagnostic system that was developed in this department. PMID- 3863430 TI - Cytology of bladder papilloma. AB - Eighty-four urinary cytology specimens from 51 patients known to have bladder papilloma were reviewed and compared with 30 specimens from patients without neoplastic urologic disease, 12 specimens from patients later found to have papillomas that were unsuspected at the time of examination and 6 specimens from patients with a history of papilloma but no present evidence of the disease. No specific findings were identified that could be used to make a cytologic diagnosis of papilloma. However, the specimens from patients with papilloma were likely to contain an increased number of exfoliated epithelial cells, including atypically shaped cells that were small and round or, less frequently, elongated; they were also likely to contain a small number of red blood cells. This combination of cytologic findings yielded a pattern that can be described as consistent with or suggestive of papilloma in the appropriate clinical setting. It is not diagnostic since the absence of this cytologic pattern does not rule out papilloma, and the same cytologic features can be found (less frequently) in patients with other urologic diseases. PMID- 3863431 TI - Cytologic diagnosis of mesonephric adenocarcinoma of the urinary bladder. AB - Mesonephric adenocarcinoma is a rare primary neoplasm of the urinary bladder, composed of papillary and glandular structures with clear-cell features. A case is reported in which cytologic examination of urine specimens showed the distinctive dimorphic cell population of small cells in papillary formations and larger cells with features of a clear-cell adenocarcinoma, permitting a specific diagnosis. PMID- 3863432 TI - Choroid plexus carcinoma. Report of a case with cytopathologic differential diagnosis. AB - The cytopathologic features of choroid plexus carcinoma in the cerebrospinal fluid of a 13-month-old male infant were reviewed and compared with those of other small-cell malignant neoplasms of childhood and young adulthood involving the central nervous system. The cytologic features of the choroid plexus carcinoma (tight spatial clusters and isolated anaplastic cells with striking nuclear lobulation) were distinct from those of lymphoma, leukemia, neuroblastoma, ependymoma and pineal germinoma. However, the cells had a striking resemblance to those of anaplastic ependymoma and metastatic adenocarcinoma. PMID- 3863433 TI - Sensitivity and specificity of fine needle aspiration cytology in the diagnosis of tumors of the thyroid gland. AB - A study of the preoperative fine needle aspiration cytologies in consecutive patients with primary malignant tumors (203 cases) or benign thyroid tumors (217 cases) showed a sensitivity of 0.57 and a specificity of 0.98. The sensitivity of FNA cytology in medullary and undifferentiated carcinomas was 0.82 and 0.84, respectively; none of these were microscopically misdiagnosed. The sensitivity was only 0.58 for papillary carcinomas (excluding occult carcinoma) and 0.42 for follicular carcinoma. Four reasons for these low sensitivities were identified: tumors missed at aspiration, microscopic misinterpretations, diagnoses of cellular atypia and indeterminate diagnoses. Reevaluation of the false diagnoses once more emphasized the problem of distinguishing follicular adenomas from follicular carcinomas. Microscopically undiagnosed papillary carcinomas were either the result of misinterpretations of the characteristic cytomorphologic features or of the smears being misdiagnosed as showing cellular atypia when papillary formations were missing and only one or two of the other cellular criteria were evident. The specificity of FNA cytology of thyroid tumors was found to be high enough to permit surgical intervention after a cytodiagnosis of malignancy. PMID- 3863434 TI - Renal-cell carcinoma metastatic to the thyroid. Aspiration cytology and histologic findings. AB - A case of renal-cell carcinoma metastatic to the thyroid eight years after the removal of the primary tumor is presented, with the aspiration cytologic and histologic findings described. This unusual presentation and the incidence and behavior of renal-cell carcinomas and tumors metastatic to the thyroid are discussed. PMID- 3863435 TI - Aspiration biopsy cytology of renal oncocytoma. AB - The fine needle aspiration biopsy findings in four cases of renal oncocytomas were reviewed. The cytologic smears contained many large, well-demarcated, eosinophilic cells with prominent nucleoli. Some of the cells were binucleated. The findings in these cases indicate that renal oncocytoma may be suggested preoperatively on the bases of renal angiography and aspiration biopsy cytology. The differential diagnosis between renal adenocarcinoma and carcinomas with oncocytic differentiation is discussed. PMID- 3863436 TI - Fine needle aspiration of myelolipoma of the adrenal gland. Report of a case with computed tomography. AB - Myelolipoma, a rare benign tumor of the adrenal gland composed of adipose tissue and hemopoietic elements, is usually asymptomatic and described as an incidental finding at autopsy. Computed tomographic (CT) body scans revealed radiographic evidence of myelolipoma, i.e., low-density masses with calcification, in a patient with a known squamous-cell carcinoma of the lung. These nonspecific findings, described in a variety of other tumors involving the adrenal gland, were confirmed by CT-guided fine needle aspiration (FNA) biopsy. While the routine use of FNA biopsies of the adrenal gland in patients who do not have cancer remains controversial, it is mandatory to biopsy any masses in the adrenal gland in patients who have cancer; this case illustrates the value of CT-guided FNA biopsy in rendering a diagnosis of myelolipoma of the adrenal gland. PMID- 3863437 TI - Fine needle aspiration cytology of the pancreas. An analysis of its use in 52 patients. AB - An experience with fine needle aspiration cytology of the pancreas over a five year period in 52 patients is described. It was a highly specific test (93%), with a 100% predictive value for a positive test, regardless of the method used to obtain the cytologic sample. On the other hand, the sensitivity was relatively low, especially for percutaneous biopsies (58%). These results are similar to those reported by others. The complication rate was low (less than 1%). FNA cytology is now the procedure of choice in establishing a definitive diagnosis of pancreatic carcinoma in our institution. PMID- 3863438 TI - Fatal septic shock after fine needle aspiration of a pancreatic pseudocyst. AB - Fatal septic shock due to Streptococcus sanguis developed eight days after fine needle aspiration (FNA) of a pancreatic pseudocyst. The pseudocyst was adherent to the transverse colon (as is often the case with pseudocysts), and contamination of cyst fluid with colonic bacteria most likely initiated the infection. The patient had not received prophylactic antibiotics, even though the needle had been observed to pass through the bowel at the time of the CAT-scan guided aspiration. Although the literature documents the safety and usefulness of FNA in the diagnosis of pancreatic tumors, this case suggests that prophylactic antibiotics be considered at the time of aspiration of pseudocysts or necrotic tumors. PMID- 3863439 TI - Fine needle aspiration of proliferative fasciitis. A case report. AB - The cytologic findings of a fine needle aspiration (FNA) biopsy from a patient with proliferative fasciitis, a benign, reactive process involving the subcutaneous tissue, are presented. Proliferative fasciitis is defined histologically as a spindle-cell lesion containing basophilic giant cells that resemble ganglion cells; the FNA smears from this patient's lesion were cellular and contained spindle cells as well as numerous large cells with abundant cytoplasm, one to two eccentric nuclei and macronucleoli. The large cells seen on the aspiration smears correspond well with the classic ganglionlike cells seen on histologic sections. Care must be taken so that this distinctive lesion is not misdiagnosed as a malignant soft tissue neoplasm. PMID- 3863440 TI - Eosinophilic pleural effusion with Charcot-Leyden crystals. PMID- 3863441 TI - Giardia lamblia infection mimicking pancreatic carcinoma: a case report. PMID- 3863442 TI - Carcinoma of the breast presenting initially in cerebrospinal fluid. PMID- 3863443 TI - Ova of Taenia and Enterobius vermicularis in cervicovaginal smears. PMID- 3863444 TI - Bite plates and stabilization splints in mandibular dysfunction. A clinical and electromyographic comparison. AB - Twenty patients with mandibular dysfunction, all women, aged 17-41 years, were randomized for treatment with either a bite plate with a frontal plateau or a full-coverage stabilization splint. The occlusal appliances were used at night for 6 weeks to compare clinical and electromyographic effects (EMGs). Integrated EMGs were recorded bilaterally from the anterior and posterior parts of the temporal muscle and the masseter muscle in the rest position and during gentle and maximal biting before and after treatment without the appliances in situ. Initially recorded EMG activity in the temporal muscle was correlated to signs of dysfunction in the rest position. Compared with previously investigated healthy subjects, the patients had lower EMG activity in the anterior part of the temporal muscle and in the masseter muscle during maximal biting. Use of occlusal appliances at night for 6 weeks did not change the EMG activity in the rest position or during maximal biting. The clinical signs improved, significantly in the splint group. The subjective symptoms improved in both groups, significantly more in the splint group. PMID- 3863445 TI - Characterization of saliva proteins from 'stainers' and 'non-stainers' adsorbed to hydroxyapatite. AB - Stainers and non-stainers were selected on the basis of their individual tendency to develop extrinsic tooth discolorations from a chlorhexidine mouth rinse. Saliva proteins adsorbed to hydroxyapatite in vitro and in vivo pellicle from the participants were analyzed by gel filtration and ion-exchange chromatography. Two distinct anionic components were isolated. The elution patterns from stainers and non-stainers were identical. Amino acid analyses of the main peaks demonstrated a prevalence of serine, glycine, and glutamic acid. PMID- 3863446 TI - The occurrence of recurrent aphthous ulcers in an adult Swedish population. AB - Aphthous ulcers were found in 2% of a total of 20,333 individuals aged 15 years or more examined in urban, suburban, and rural regions of Sweden. When a history of 2 years was considered, the prevalence was 17.7%. A slight predominance was found for females. The younger age groups showed the highest prevalences of the condition, which then decreased steadily with age. Interviews were conducted with a fraction of the population comprising 2771 people with regard to their experiences of aphthous ulcers. Thus, for example, the average number of episodes per year was two to four and the most prevalent time for healing, 5-8 days. Among the factors thought by patients to trigger the condition, catching a cold was reported as the main one, followed by stomach problems and menstruation. PMID- 3863447 TI - The effect of abrasion on corrosion of dental Co-Cr alloys. An in vitro study. AB - The effect of abrasion on corrosion of two dental Co-Cr alloys was investigated in vitro. The metals were abraded with a toothbrush and with a piece of tooth enamel. Changes in corrosion potentials and metal release due to the abrasion were measured. Abrasion by tooth enamel caused a persistent drop in corrosion potentials. The release of both chromium and, in particular, cobalt was higher than during brushing. The two alloys tested did not significantly differ with regard to mode and rate of corrosion. It was demonstrated that the corrosion behavior of electrochemically passive dental alloys was affected by abrasion of a magnitude normally encountered during clinical service. PMID- 3863448 TI - Characteristics of premaxillary hyperodontia. A radiographic study. AB - Among 63,029 patients admitted to Department of Oral Radiology, University of Oslo, 900 had a total of 1153 supernumerary teeth located to the premaxillary region. Characteristics of the supernumeraries were predominance in males, predominance in the permanent dentition, predominant location in the central incisor region, and predominant position palatally to the dental arch, vertically oriented, half of them inverted. Interference with the normal dentition included malposition, diastema, maleruption, and resorption. Sequelae included widened follicular space, dentigerous cyst formation, dental pulp necrosis, pulp canal obliteration, root resorption, and ankylosis. Nearly 60% of the patients had radiographic or clinical signs of interference with the normal dentition or of associated complications. PMID- 3863449 TI - Occlusal wear. A follow-up study of 18 subjects with extensively worn dentitions. AB - Eighteen patients with moderate to severe dental wear were re-examined 6-10 years after a treatment period that included use of occlusal splints at night. The splints were used with various intensities for an average of 2 years. The methods of evaluation comprised a questionnaire, clinical examination, comparison of dental casts, salivary analysis, and bite force measurements. The changes in dental wear during the follow-up period were small, the typical finding being an increase of facets but no measurable reduction of tooth length. The results indicate that many variables apart from occlusal parafunctions, such as acid regurgitation and salivary and dietary factors, may contribute to loss of tooth substance diagnosed as dental wear. In most patients, the continuing wear process was slow after long-term treatment with occlusal splints. PMID- 3863450 TI - Bacteriological studies on endodontic paper points. AB - Four brands of endodontic paper points were subjected to tests for sterility, antibacterial activity, and suitability as vehicles for bacteriological sampling procedures. No brand showed growth in the sterility assay. One brand showed weak but reproducible antibacterial activity. Recovery of viable bacteria after absorption into the points varied and appeared to depend both on the brand of point and on the bacterial strain used. One brand appeared ineffectual for clinical bacteriological sampling procedures. PMID- 3863451 TI - Renewal and migration of rat incisor mesenchymal cells after doxorubicin administration. AB - Ten female rats were intravenously injected with doxorubicin (20 mg/kg) and divided into two equal groups receiving a dose of tritiated thymidine either simultaneously with doxorubicin or 1 h before being killed after 5 days. Six control animals were correspondingly injected with 3H-thymidine. The left and right maxillary incisors were prepared for histologic and microautoradiographic investigation, respectively. The distribution of labeled cells in animals injected 1 h before death showed the regions of proliferation, whereas migration from these regions was evaluated by longer observation time. A zone of reduced dentin deposition lined by irregular odontoblasts being young odontoblasts and late preodontoblasts was observed at the time of doxorubicin injection. Pulpally to the dentinal lesion, islands of irregular predentin were deposited by non progenitive pulp cells and depolarized odontoblasts. The late preodontoblasts were renewed from progenitive pulp cells, leading to a disturbed mantle predentin deposition. PMID- 3863452 TI - Prostaglandin E2 level in tears during postoperative inflammation of the eye. AB - The concentration of prostaglandin E2 (PGE2) in tears was measured by a radio immuno assay technique in 25 persons before cataract extraction and during the post-operative period. In addition we studied the clinical signs of inflammation, the tear secretion rate, the content of polymorphonuclear leucocytes (PMNs) in tears, the bacteriology of the conjunctival sac and the central corneal thickness (CCT) during this period. We found pre-operative median level of PGE2 of 82 pg/ml and on the first post-operative day a significant rise in PGE2 concentration despite increased tearing. There was a tendency towards further gradual increase in PGE2 concentration until the 5th day and thereafter a decline to pre-operative level 12 days after surgery. The conjunctiva is proposed as a possible source of the PGE2 in tears. No significant correlation could be demonstrated between PGE2 levels and clinical signs of inflammation, CCT, PMN level, bacteriology or tear secretion rate. PMID- 3863454 TI - New perspectives in psychiatric research. Proceedings of the WPA regional symposium organized by the Finnish Psychiatric Association in Helsinki, Finland, June 18-21, 1984. PMID- 3863455 TI - Evaluation of psychosocial treatments. AB - The most widely chosen dimensions in the evaluation of psychosocial treatments are structure evaluation, process evaluation and outcome evaluation. The measurement of structure focuses on the inputs to a system intended for promoting mental health. The measurement of process shows how the inputs are used. And finally the measurement of outcome gives information about the effectiveness of the treatment in the terms of outcome. Five basic questions of outcome evaluation are: appropriateness, adequacy, effectiveness, efficiency and side effects of the treatment. Using these concepts this article analyzes different parts of the treatment process and their evaluation. The emphasis is on the problems of evaluation of psychotherapy research and especially on outcome research in psychotherapy. PMID- 3863453 TI - Differences in contractile activation between human myometrium and intramyometrial arteries. AB - Small intramyometrial arteries and pieces of adjacent myometrial tissue were obtained from 25 non-pregnant women undergoing hysterectomy. Vascular and myometrial preparations were dissected, mounted in organ baths and isometric tension was recorded. Myometrial strips, but no vascular preparation, developed spontaneous contractile activity. Noradrenaline (NA) and vasopressin (VP) contracted both vessels and myometrium. Prostaglandin F2 alpha (PGF 2 alpha) contracted the myometrial tissue, but had only a minor effect on the vessels. Removal of extracellular calcium almost abolished the myometrial responses to high K+ (124 mM)-solution, PGF 2 alpha, NA and VP. The vascular responses remaining after this treatment were 18% (K+), 34% (NA) and 25% (VP) of control contractions induced by high K+ (124 mM). Nifedipine potently depressed myometrial contractions induced by NA and VP, but was less active against the vascular responses to these agents. In preparations exposed to calcium-free medium, nifedipine (10(-7) M) almost abolished myometrial contractions induced by calcium in the presence of K+ (124 mM), NA or VP. It also effectively depressed vascular responses to calcium in the presence of K+, but was less active if NA and VP were present. It is suggested that PGF2 alpha has almost no contractant effect on intramyometrial arteries, and that the activation process in these vessels is much less dependent on extracellular calcium than that of the myometrium. PMID- 3863456 TI - A family system's approach in consultation liaison services. AB - Starting from difficulties in the cooperation of clinical and psychosocial medicine an alternative view is suggested following the principles of general system's theory and family therapy. The request for consultation is under such considerations regarded as the expression of an interactional crisis in which the whole system (patient, family and clinic) has become involved. Practical suggestions are made concerning the treatment setting, the methods of intervention and the initiation of an ongoing therapeutic contact. PMID- 3863457 TI - An empirically derived hierarchy of adaptive mechanisms and its usefulness as a potential diagnostic axis. AB - This report empirically examines the utility of the model of ego mechanisms of defense to explain psychological resilience in 307 middle aged men with socially disadvantaged childhoods. The sample has been prospectively followed for forty years. The model arranges defense mechanisms along a hierarchy reflecting severity of psychopathology and hypothetical immaturity. The value of this hierarchy of defenses in relation to diagnosis is discussed. PMID- 3863459 TI - Psychotherapeutically oriented treatment of schizophrenia: results of 5-year follow-up. AB - The authors have developed a psychotherapeutic approach to schizophrenia within the community psychiatric health care system. The orientation is psychodynamic but global in the meaning that the therapeutic plans are made on the basis of case-specific need of the patients and of their families and include both individual psychotherapy, family therapy and therapeutic communities. The material is composed of 100 successive patients of the schizophrenia group aged 16 - 44 years and for the first time admitted for treatment into the different units of the Turku Mental Health District in 1976 - 77. A multiprofessional staff was acting as therapists, supported by a continuous and intensive on-the-job training and supervision. The results preliminary reported in this paper are based on a follow-up study 5 years after admission to treatment. 56 patients could be included in the psychotherapy group given at least some mode of psychotherapy in an adequate amount. The background variables of patients selected for various modes of therapy as well as the prognostic results are studied with the aid of logistic regression analyses. The findings indicate that the development of a global psychotherapeutic orientation is possible in the field of community psychiatry and yields results that demonstrate its meaningfulness. The implementation of psychotherapy had clearly positive explanatory connections with a favourable prognosis, and although these connections were not equally strong as the connections of some central clinical and psychosocial variables, they were obvious and manifold. PMID- 3863458 TI - Interaction of genetic and psychosocial factors in schizophrenia. AB - What the genetic and family dynamic theory have in common, is that the cause of schizophrenia could be found in the family. Usually the genetic factors and the rearing factors are confounded in the same family. In a study of adoptive children given away for adoption early enough, discrimination between these two sets of factors is possible. A nation-wide sample of offspring of schizophrenic mothers, given away for adoption, has been compared blindly with matched controls, i.e., adopted-away offspring of non-schizophrenic biologic parents. The families have been investigated thoroughly with joint and individual interviews and psychological tests. In the 91 pairs where both the index and control families have been investigated and rated so far, the total number of severe diagnoses (psychosis, borderline, character disorder) is 28.6% (26/91) in the index group and 16.5% (15/91) in the matched control group. Of the 7 psychotic cases, 6 are offspring of schizophrenics and only one a control offspring. The relation of psychopathology of adoptive families to the mental health ratings of the offspring supports the hypothesis that a possible genetic vulnerability has interacted with the adoptive rearing environment. PMID- 3863460 TI - Controversies and consistencies in psychiatric genetics. AB - The methodology in psychiatric genetics, including family studies, twin studies, and adoption strategies, developed during the last 70 years to a high degree of perfection, has established beyond doubt the heritability of the major psychoses, the schizophrenic and manic-depressive disorders. In spite of recent refinements, including twin-family-study strategies, dual mating strategies, and advanced mathematical models and statistics the mode of inheritance is still undetermined. Evidence for heterogeneity in both schizophrenia and manic-depressive psychosis has been brought up leading to new approaches in diagnostic delimitations. However, the final solution of this issue probably has to await the finding of a genetic marker, for which recent advances in molecular biology as seen in Huntington's disease may give some hope. PMID- 3863461 TI - Family factors that antedate the onset of schizophrenia and related disorders: the results of a fifteen year prospective longitudinal study. AB - The present study evaluates, within the context of a prospective study, whether certain discrete, pathological styles of communication antedate the onset of schizophrenia and schizophrenia-spectrum disorders. The three parental styles evaluated were: communication deviance (CD; Wynne & Singer), affective style (AS; Doane), and expressed emotion (EE; Vaughn and Leff). These measures were obtained on a sample of 64 intact families who appeared for help, from a psychological clinic, for their moderately disturbed teenager over 15 years ago. The sample of offspring and selected siblings were followed up at two subsequent time periods, 5 and 15 years after the initial family assessments at which times blind psychiatric evaluations were done. The lifetime prevalence of schizophrenia and schizophrenia-spectrum disorders in the sample were evaluated. Of the 64 teenagers, follow-ups were feasible on 50 of the cases. Of these, 45 had all three parental measures available. Within that subsample, schizophrenia-spectrum disorders were predominantly associated with the combined parental pattern of high CD, negative AS and high EE. When data for siblings was included, the predictive value of CD was even greater. These findings strongly suggest that disturbed patterns of intrafamilial communication and affect expression antedate the onset of schizophrenia-spectrum disorders and are not reactions to psychotic behaviors in already schizophrenic offspring. PMID- 3863462 TI - DSM-III schizophrenia: is there evidence for familial transmission. AB - To resolve some recent controversies as to whether there is any evidence of familial transmission in DSM-III schizophrenia, a blind study of first degree relatives of 332 DSM-III schizophrenia was conducted. A comparison group of first degree relatives of 318 surgical patients who were free of psychiatric symptoms were also studied. The morbidity risks of schizophrenia and related illnesses were estimated among these relatives. The risk of DSM-III schizophrenia in the relatives of schizophrenics was 3.7 + 0.7 which was significantly higher (p less than .01) than among the relatives of surgical controls (0.2% + 0.2) with a relative risk of 18.5 (3.7/0.2). When broad criteria of schizophrenia were used by including all schizophrenia-related illnesses, the risks were approximately 9.0% and 1.0% respectively in the families of schizophrenics and controls with a relative risk of 9.0. These results will be discussed in the light of relevant literature. It is concluded that there is an evidence for familial transmission in DSM-III schizophrenia. PMID- 3863463 TI - The genetics of schizophrenia: new perspectives. AB - Despite the evidence for genetic factors in schizophrenia, the underlying hereditary defect is unknown. The author reviews recent advances in genetic research methodologies and discusses their strengths and limitations. He concludes that in the face of genetic heterogeneity current models of segregation analysis are not likely to unravel the mode of inheritance of schizophrenia. The author underscores the potential contribution of both molecular genetics (as a means to generate DNA markers) and studies with biologic vulnerability traits to identifying and quantitating the genetic component in the transmission of schizophrenia. PMID- 3863464 TI - Aging and schizophrenic psychosis. AB - The author discusses the question of the interference of schizophrenia and aging, and specially of the impact of biologic and organic versus social and situational factors. The presentation is based on long-term follow-up studies by the author himself and others, showing favorable outcomes in about half of the cases. Contrary to general beliefs, old age has quite often a favorable influence, eg. by dampening acute productive symptoms and drives, and by improving interpersonal relations. Psycho-organic deterioration is hardly more frequent, in schizophrenics, than in the general population. In conclusion, in old age, too, schizophrenia does no longer appear as a fatally progressive organic disease, but as a multiconditional open life process in vulnerable individuals with persisting potential for improvement even in old age. PMID- 3863465 TI - New implications of antidepressant therapy in neuropsychopharmacology: focus on mianserin. 14th Congress of the Collegium Internationale Neuro Psychopharmacologicum. Florence, Italy, 19-23 June 1984. PMID- 3863466 TI - Changes in sleep EEG architecture during the treatment of depressed patients with mianserin. AB - The effect of mianserin on sleep variables was studied in a single-blind non controlled trial. Ten depressed hospital in-patients received placebo for one week and then mianserin 60 mg at night for four weeks. Acute changes seen on starting mianserin treatment included increases in sleep period time, total sleep time, sleep efficiency index, and stage II sleep, together with reductions in total time awake and latency for rapid eye movement sleep. The changes in sleep efficiency index, total time awake, stage II sleep, and latency for rapid eye movement sleep persisted over the duration of the study. Clinically, treatment with mianserin improved overall sleep pattern and ameliorated their depression. PMID- 3863467 TI - Clinical and neuroendocrine features of endogenous unipolar and bipolar depression. AB - A group of 19 patients suffering from endogenous unipolar depression was compared with another group of eight patients with bipolar depression. Comparisons were based on psychopathological features together with results of the dexamethasone suppression test and the thyrotropin releasing hormone stimulation test. Unipolar patients showed more frequent loss of weight, reduced appetite, autonomic disturbances, muscular tension, sadness, and reduced sexual interest, whereas bipolar patients showed more frequent hostile feelings. Each neuroendocrine test identified at least 50% of the patients in each group. The combined use of both tests identified about 75% of the patients. The bipolar depressives obtained slightly but not significantly higher rates of positive results in each test and a more frequent association of abnormality in both tests. PMID- 3863468 TI - Treatment of childhood and adolescent depression with mianserin. AB - The efficacy of mianserin in treating adult depression is now well established. Since there are no publications concerning the use of mianserin in children, the authors set up an open pilot study of 110 depressed children and adolescents aged 8-19 years. The average dose of mianserin was 1 mg/kg/day. Efficacy of treatment was noticeable by the end of the first week and was maintained throughout the 60 day study period. Evaluation was based on both clinical observations and changes in scores obtained from 80 subjects. Side-effects were minimal leading to temporary withdrawal of treatment in only seven cases. The profile of mianserin in children and adolescents is similar to that of adults. It is an antidepressant with an anxiolytic component, and has a regulating effect on sleep. In view of its efficacy, compliance, and the very low incidence of side-effects, mianserin appears to be a useful treatment for depression in children and adolescents. The results of this open study justify the development of further controlled studies. PMID- 3863469 TI - Mianserin and imipramine in the treatment of elderly depressed patients. AB - Fifty elderly depressed patients were randomly assigned to double-blind treatment, using a flexible dose schedule, with either mianserin 20-60 mg or imipramine 75-150 mg. Medication was continued for four weeks. Eleven patients withdrew from the study. At the end of treatment there were no significant differences between mianserin and imipramine in antidepressant efficacy. A significantly greater number of side-effects occurred in the imipramine group (dry mouth, days 7 and 14; faintness, dizziness, weakness, day 21). When treating elderly depressed patients mianserin may be preferred to imipramine because of a lower incidence of induced side-effects. PMID- 3863470 TI - Mianserin is better tolerated and more effective in depression than a nomifensine clobazam combination: a double-blind study. AB - Patients suffering from depression (mostly depressive neurosis) were admitted to a double-blind study which compared the efficacy of a combination of nomifensine and clobazam with mianserin. Therapeutic efficacy was evaluated on the Hamilton Depression Rating Scale, Hamilton Anxiety Rating Scale, Clinical Global Impression Scale, physician's assessments, Global Improvement and Treatment Emergent Symptom Scale for side-effects. Assessments were made before admission to the trial and on days 3, 7, 14 and 21. Forty patients were randomly allocated to two treatment groups. A case is made against polypharmacy and in particular against the use of benzodiazepine combinations in depression. Nineteen patients on nomifensine-clobazam and 14 on mianserin completed the three-week trial. At 7, 14 and 21 days, the Hamilton Depression Rating Scale (HDRS) total scores were significantly improved for mianserin when compared with nomifensine-clobazam. Similarly, at 7 and 14 days the Hamilton Anxiety Rating Scale (HARS) total scores were significantly better for mianserin than for the nomifensine-clobazam combination. There were also significant improvements for mianserin on the HDRS sub-scales of anxiety somatization, cognitive disturbance and sleep disturbance. There were no significant differences for HDRS somatic symptoms between treatment groups. Drowsiness was the most common side-effect in both groups. The incidence of total side-effects was 74% for nomifensine-clobazam and 71% for the mianserin group. PMID- 3863471 TI - Digoxin interactions. The influence of quinidine and verapamil on the pharmacokinetics and receptor binding of digitalis glycosides. PMID- 3863472 TI - Myocardial infarction and environment. Use of registers in epidemiology. AB - In the present thesis methods for utilizing some of the many registers in Sweden for epidemiological purposes were further developed. These purposes include immigrant studies, case-control studies dealing with psychosocial job characteristics, and studies of time trends. A theoretical framework for handling problems of misclassification when using register data was developed. Register data were used to examine several hypotheses concerning the occurrence and etiology of myocardial infarction (MI). The result of these all emphasize the role of environmental factors in the etiology of MI. Further information on the relationship between migration and MI was obtained. Male Finnish immigrants in Sweden tend to adopt the lower risk of native Swedes. This implies that environmental factors are important in explaining the difference in incidence of MI between Finland and Sweden. This also implies that it may be possible to decrease the risk by changing environmental conditions. The relationship between psychosocial work environment and MI risk was studied in a new way by using information on occupation. Occupations characterized by hectic work and at the same time providing little possibility for control or growth were significantly associated with an elevated MI risk. The risk for men aged 40-54 years employed in these strenuous occupations was about twice as high as for those in other occupations. This result remained relatively unaffected when several potential confounding factors were taken into consideration. A study was undertaken to examine trends in the incidence and mortality of MI in Stockholm (1974-80). For men the incidence as well as the mortality was appreciably increased. For women there was an appreciable increase in incidence while the increase in mortality was more uncertain. The observed increases in incidence and mortality are contrary to the trend for most other nations in the Western hemisphere. The reason for the increasing trend in Stockholm is, however, unknown. PMID- 3863473 TI - The relation between thymic interdigitating cells and dendritic cells. PMID- 3863474 TI - Development of dendritic cells from rat bone marrow. PMID- 3863475 TI - The relation between rat lymph node interdigitating cells in situ and dendritic cells in suspension. PMID- 3863476 TI - Is Ia antigen expression by thymic epithelial cells constitutive? AB - Thymic epithelial cells express class II MHC antigens (Ia) in the normal thymus. In a variety of special circumstances, generally associated with decreased or absent thymocyte populations, TEC fail to express Ia antigens. Although such observations might be interpreted based on the hypothesis that TEC Ia antigens have an effect on the differentiation of thymocytes, it is also possible that instead, the thymocytes have an effect on TEC Ia antigen expression. PMID- 3863477 TI - First-year dental class: an attitudinal profile. PMID- 3863478 TI - Apexification of necrotic teeth. PMID- 3863479 TI - Preventing bacterial endocarditis in the dental patient. PMID- 3863480 TI - Low levels of zinc in hair and blood, pica, anorexia, and poor growth in Chinese preschool children. AB - Zinc concentrations in plasma and hair were measured in 703 children, aged between 1 and 6 yr, and correlated with parameters of physical development. In the first group of 187 children brought to the Child Health Clinic for routine observation there was a positive correlation of hair zinc content and height for age, with an increased prevalence of low hair zinc content in children of shorter stature. A second group of 303 children in nurseries and kindergartens in Beijing exhibited a hair zinc content of 92 micrograms/g, and 34% of these had very low zinc values below 70 micrograms/g. The third group consisted of 213 children who were brought into the outpatient clinic for a variety of complaints, including pica, anorexia, and poor growth; these had significantly lower values of zinc in hair and plasma than well-nourished children and responded to zinc supplementation with improvement of growth and the disappearance of pica and anorexia. These results suggest that the diet consumed by the population studied may be marginal or inadequate in its content of available zinc. PMID- 3863481 TI - Twenty-seven protein polymorphisms by two-dimensional electrophoresis of serum, erythrocytes, and fibroblasts in two pedigrees. AB - Twenty-seven independent polymorphic loci were detected by two-dimensional electrophoresis (2DE) of serum, erythrocytes, and fibroblasts in two large families and analyzed for linkage to classical genetic markers. We detected seven serum, four erythrocyte, and 17 fibroblast protein loci that exhibited charge variation in these two families and in a sample of unrelated individuals. The genetic basis of protein variants was confirmed by quantitative gene-dosage dependence and by conformance to Mendelian transmission in the two families, except for four rare variants for which transmission analysis was not possible. Linkage analysis demonstrated that each of the variants represent products of independent loci, with the exception of erythrocyte locus (RBC4), which we also detected in fibroblasts (NC27). Two allozyme polymorphisms, glyoxalase-1 (GLO1) and phosphoglucomutase-3 (PGM3) were specifically identified here based on genotypic concordance and molecular mass. Unknown fibroblast protein (NC22) may be linked to apolipoprotein E (lod score = 2.8 at theta m = theta f = 0), while a serum protein locus (SER1) may be linked to alpha-haptoglobin (lod score = 2.54 at theta m = .20, theta f = .01). Six of seven polymorphic serum loci were previously located on two-dimensional gels: alpha-1 antitrypsin (PI), Gc-globulin (GC), alpha-2 HS glycoprotein (HSGA), alpha-haptoglobin (HP), and two apolipoproteins (APOE and APOA4). Six of 17 polymorphisms detected in fibroblasts were positionally identical to polymorphic loci seen in lymphocytes. These studies indicate a minimum level of average protein charge heterozygosity of approximately 2.2% for the most predominant human cellular proteins and of 5.6% for the most predominant proteins of serum. PMID- 3863482 TI - Unaffected carrier males in families with fragile X syndrome. AB - Males who transmit the fragile X chromosome but are themselves clinically normal have occasionally been observed. We have studied three families segregating the fragile X. In one family, there are three unaffected carrier males, and in each of the other two families, there is one unaffected carrier male. Three of these carrier males were studied cytogenetically, and none exhibited the fra(X)(q27) marker. The occurrence of carrier males and of other unusual genetic features in fragile X families suggest that this condition is not inherited as a standard recessive trait linked to the X chromosome. PMID- 3863483 TI - Identity-by-descent analysis of sibship configurations. AB - This study considers configurations of identity-by-descent sharing in sibships as an alternative to breaking the sibship into sib pairs. A general method is presented for specifying all distinct configurations and deriving their probabilities. The method works for sibships of arbitrary size and can be implemented with paper and pencil. Specific results are given for sibships up to size six. Applications for disease-marker studies are discussed. PMID- 3863484 TI - Saying goodbye. PMID- 3863485 TI - Uterine rupture with the use of vaginal prostaglandin E2. PMID- 3863486 TI - Dentofacial orthopedics in relation to somatic maturation. An analysis of 70 consecutive cases treated with the Herbst appliance. AB - Mandibular treatment changes were related to somatic maturation in 70 consecutive cases of Class II malocclusion (52 boys and 18 girls, aged 10 to 16 years) treated with the Herbst appliance for an average period of 7 months. Sagittal and vertical alterations in mandibular condylar growth and sagittal changes in molar and incisor tooth position were analyzed by means of mouth-open profile roentgenograms. The somatic maturity level of the patients was assessed by means of longitudinal growth records of standing height. The treatment period was related to the peak height velocity by dividing the patients into three growth period groups: prepeak, peak, and postpeak. Herbst treatment resulted in Class I dental arch relationships in all patients. Post-Herbst treatment changes were not evaluated in this study. Sagittal condylar growth was increased and the mandibular molars and incisors were moved anteriorly. When the mandibular skeletal and dental changes were related to the subjects' somatic maturation, significant differences between the different growth periods existed in boys and tendencies were noted in girls as follows: sagittal condylar growth was most pronounced in the peak period, anterior molar movement was equally large in all growth periods, and anterior incisor movement was most extensive in the postpeak period. To take advantage of the increase in condylar growth response and to reduce the time of posttreatment retention, it is suggested that Herbst therapy be instituted close to peak height velocity. PMID- 3863487 TI - Posttreatment changes of skeletal morphology following treatment aimed at restriction of maxillary growth. AB - In the evaluation of the success of orthodontic treatment, an analysis of posttreatment changes was essential. Twenty-eight patients with increased overjet and overbite, a high mandibular plane angle, and perioral dysfunction had been treated by means of normal maximal restriction of maxillary development. The posttreatment changes of the skeletal morphology was analyzed and related to both pretreatment morphology and treatment-produced changes. The correlation analysis demonstrated that less than 25% of the variation in posttreatment changes could be accounted for by pretreatment morphology. However, the dependency of posttreatment changes on treatment-produced changes was stronger with regard to both linear and angular measurements. Upon analyzing the changes in mandibular prognathism during and after treatment, all combinations of downward and forward growth were presented. In some cases the increase in prognathism during treatment would continue after treatment; in others the reverse was true. Opening of the Y axis would in some cases be constant, leading to a decrease in mandibular prognathism. In others a pronounced anterior rotation moved the pogonion forward following treatment. A dental relapse as a consequence of skeletal relapse was seen only in cases in which normal perioral function, including normal lip closure and absence of tongue-thrust swallowing, had not been established. PMID- 3863488 TI - Holographic and cephalometric study of the relationship between craniofacial morphology and the initial reactions to high-pull headgear traction. AB - Eight macerated human child skulls with a dental age of approximately 9.5 years (mixed dentition) were consecutively subjected to an experimental standardized high-pull headgear traction system attached to the maxilla at the first permanent molar area via an immovable acrylic resin splint covering all teeth. This system produced tensile forces from 0.5 to 3.5 N (1 N = 0.10 kg) per side. Laser holography was used to measure displacements in a three-dimensional coordinate system. Displacements varied in direction. In addition, conventional cephalometric analysis of standardized lateral roentgen cephalograms was performed. Displacements and cephalometric data were then compared. Results indicate that the direction of initial displacements of bones of the facial skeleton bears a definite relationship to the morphology of the individual skull. In skulls with high divergency values (large angles, sella-nasion-occlusal plane, sella-nasion-mandibular plane), displacements are in a backward and posterior downward direction; in skulls with a small sella-nasion-occlusal plane angle, backward displacements occur in a direction almost parallel to the occlusal plane. PMID- 3863489 TI - Cephalometric comparisons of the dentofacial relationships of two adolescent populations from Iowa and northern Mexico. AB - The purpose of this study is to develop cephalometric standards for North Mexican male and female adolescents. The subjects evaluated in the study included 36 North Mexican boys with a mean age of 12.8 years and 45 North Mexican girls with a mean age of 13.0 years. The Iowa sample included 20 boys and 15 girls of similar age who were participants in the longitudinal facial growth study at the University of Iowa. Basic descriptive statistics are presented on 26 cephalometric parameters arranged in five categories: skeletal angular relationships, skeletal linear relationships, dental angular relationships, dental linear relationships, and soft-tissue profile relationships. The general linear models procedure--analysis of variance--was used for comparisons between the two populations. F values were calculated for the overall group comparisons and indicated the presence of statistically significant differences between the four subgroups examined, namely, Iowa boys and girls and North Mexican boys and girls. Significant differences between boys and girls within each population were found in the skeletal linear parameters of both the anterior and posterior face heights. Furthermore, in the North Mexican population, the Holdaway soft-tissue angle was significantly larger in boys than in girls, indicating a more convex soft-tissue profile for boys at this age. When comparisons were made between the two populations, it was of interest to note the absence of any significant differences between the North Mexican and Iowa boys. But when the North Mexican girls were compared to the Iowa girls, the SNB and SNPog angles, as well as the ratio of posterior face heights, were significantly larger for the North Mexican girls.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863490 TI - Perceptions of facial profile and their influence on the decision to undergo orthognathic surgery. AB - Eighty patients, who had previously been evaluated by an oral surgeon and an orthodontist as requiring orthognathic surgery, completed questionnaires rating their perceptions of their own profiles. Half of the patients had decided to undergo surgical correction of their jaw deformities, while the other half had decided against surgical treatment. In addition, booklets containing pretreatment photographs of all 80 patients were mailed to 37 oral surgeons, 46 orthodontists, and 43 lay persons. These three groups of evaluators rated the patients' profiles, using the same rating scales that the patients had used. Cephalometrically, the two patient groups were statistically the same in all skeletal and soft-tissue measures except for ANB (mean difference = 1.8 degrees) and soft-tissue AN-pogonion (mean difference = 2.4 degrees). Differences in these dimensions were considered in subsequent data analyses. Results of this study support the following conclusions: In spite of the fact that surgical treatment may be recommended by dental specialists and indicated by cephalometric measurements, self-perceptions of profile are more important in the patient's decision to elect surgical correction; the perception by others that the profiles of patients deciding against surgery are closer to ideal may have some influence on their decision against surgical correction of their jaw deformities; oral surgeons and orthodontists evaluate facial profiles similarly, but surgeons are more likely to recommend surgical correction; lay persons are more likely to rate an individual's profile as being normal than are dental specialists in orthodontics and oral surgery; in contrast, individuals perceive their own profiles differently than orthodontists, oral surgeons, and lay persons, particularly with respect to the mandibular and dentoalveolar dimensions. PMID- 3863491 TI - Dentoskeletal and tongue soft-tissue correlates: a cephalometric analysis of rest position. AB - The relationship between dentoskeletal and tongue soft-tissue variables has been quantified in a sample of 60 adult females with normal and anterior open-bite malocclusions. Three lateral rest-position head films were obtained for each subject. A principal component analysis reduced the data base and six significant canonical correlations were identified. The first canonical correlation (r1 = 0.962) represented a size-related correlation factor between the two groups of variables. Subjects with characteristics of a short face syndrome and some evidence of overbite had tongue tips positioned below the lower occlusal plane (r2 = 0.929). In contrast, skeletal open-bite subjects (r4 = 0.759) revealed tongue tips ahead of and above the lower incisor teeth with the mandible in the rest position. Undererupted mandibular teeth (r5 = 0.666) were associated with a reduced tongue height and an inferior epiglottis; short tongue length (r6 = 0.563) correlated with a linear combination of upright central incisors, a small overjet, a low ANB angle, unerupted maxillary and mandibular teeth, and a steep occlusal plane. The multivariate statistical analysis extracted clinically significant associations between tongue soft-tissue and dentoskeletal variables. Tongue posture at rest in skeletal open-bite subjects appeared to be related to incisor position. PMID- 3863492 TI - Temporomandibular joint: computed tomographic three-dimensional reconstruction. AB - Computed tomography represents an effective and highly automated method to display biomedical data from many sources. It has a number of advantages over previous reconstruction methods, particularly the ability to automatically locate object-boundary outlines and produce shaded three-dimensional images of reconstructed data. A three-dimensional reconstruction of the temporomandibular joint was performed successfully on five cadaver heads using the Phillips Tomoscan and IP5000 image processor. The program used in this study of the temporomandibular joint is divided into five distinct steps: data gathering, rotation and projection, filtering, smoothing, and shading. Comparison of this type of data is important in the study of the normal and abnormal anatomy of the temporomandibular joint. Similarly, quantitative data obtained from reconstructed computed tomograms can be used to study normal anatomy in vivo and to examine the effects of various treatment modalities on the size and morphologic characteristics of tumors and other pathologic entities. PMID- 3863493 TI - Renal prostanoids after unclipping the denervated one-kidney, one-clip hypertensive rat. AB - The contribution of the renal nerves in maintaining blood pressure and modulating renal prostanoid synthesis was examined in established (less than 8 wk in duration) one-kidney, one-clip (1K,1C) hypertension in the rat. Systolic blood pressure was measured for 7 days after renal denervation, at which time the renal artery clip was removed. Twenty-four-hour urinary excretion of PGE2 and 6-keto PGF1 alpha (stable degradation product of PGI2) was determined before and after denervation and unclipping. Compared with sham-denervated rats, denervation (n = 15) resulted in a small but significant fall in blood pressure (from 216 +/- 4 to 182 +/- 4 mmHg after 48 h) and an increase in urinary 6-keto-PGF1 alpha (from 31 +/- 4 to 43 +/- 5 ng/24 h after 24 h). There was no change in PGE2 excretion. Seven days after surgery, blood pressures were similar in denervated (202 +/- 4 mmHg) and sham-denervated (211 +/- 5 mmHg) rats and fell to a similar extent 24 h after unclipping (142 +/- 3 and 147 +/- 4 mmHg, respectively). Urinary 6-keto PGF1 alpha increased from 25 +/- 5 to 74 +/- 11 in denervated and 21 +/- 2 to 72 +/- 9 ng/24 h in sham-denervated rats in the 24 h after unclipping. PGE2 excretion increased approximately twofold over this period. These findings indicate that the renal nerves have only a minor role in established hypertension in the 1K,1C rat and that the reversal of hypertension and stimulation of renal prostanoid synthesis following unclipping is not dependent on neural mechanisms. PMID- 3863494 TI - Group therapy with anorexic and bulimic patients: implications for therapeutic intervention. AB - The incidence of anorexia nervosa and bulimia has increased markedly during the last decade. Although numerous studies have appeared regarding the dynamics of the eating-disordered patient, few have attempted to link the unique pathology of these patients to specific psychotherapeutic interventions. This paper is based on the authors' experience as co-therapists with a group of eating-disordered patients over an eight months' period. It addresses itself to therapeutic interventions related to the particular dynamics of bulimics and anorexics. PMID- 3863495 TI - The mechanism of the inhibitory effect of progesterone on lymphocyte cytotoxicity: I. Progesterone-treated lymphocytes release a substance inhibiting cytotoxicity and prostaglandin synthesis. AB - Progesterone-treated lymphocytes (generator lymphocytes) of healthy pregnant women release a nondialyzable factor that inhibits both cytotoxic activity and prostaglandin F2 alpha synthesis of test lymphocytes. Production of this factor is blocked by protein synthesis inhibitors (cycloheximide and actinomycin D). Sodium dodecylsulfate polyacrylamide electrophoresis of the partially purified material revealed a main 34,000 MW protein band. Progesterone-treated lymphocytes of pregnant women showing clinical symptoms of threatened preterm delivery (risk group) failed to release this substance. PMID- 3863496 TI - [Infection costs of maintaining artificial respiration]. PMID- 3863497 TI - A new site for the adjustable pressure limiting valve on a circle absorber. AB - A new site for the adjustable pressure limiting valve has been suggested which will result in the most efficient utilisation of soda lime using typical flows with a circle absorber system. It will permit economy of fresh gases using old models of circle absorbers in which the adjustable pressure limiting valve and fresh gas inlet are both situated upstream of the inspiratory unidirectional valve. The cost of the new attachment is small. PMID- 3863498 TI - [Indications for use of high-frequency artificial pulmonary ventilation]. PMID- 3863499 TI - Comparative study between Wits appraisal and I line. AB - By using a sample of 104 young people of both sexes, 17 of them with a good relation of tooth apical base and little or no incisor discrepancy, the authors tried to establish a possible relationship between the Wits appraisal and the I line and to examine the several correlations among selected groups. The authors find that the values obtained through the two methods together might give a rapid view of the cephalometric condition of the patient with regard to the relationship of the apical structures and discrepancy in the lower incisor relation to the maxillomandibular complex. Based on the findings, the following conclusions might be drawn: Nearly 16% of the sample had a good apical relation and little or no incisor discrepancy The majority of the male population was represented by individuals with a good relation of apical bases and negative discrepancy (dental protrusion) The majority of the female sample was represented by patients with deficient apical relation (slight mandibular protrusion) and negative incisor discrepancy (dental protrusion). The simultaneous usage of Wits appraisal and I line evaluation can offer a simple way to get an objective and rapid vision of the maxillomandibular relation and the incisor discrepancy. But only a meticulous complete clinical and cephalometric examination can establish the critical elements that compose a diagnosis, considering the aetiopathogenesis of the anomalies of the patient and the related data, to proceed with the execution of the correct therapy to be applied in orthodontic treatment. PMID- 3863500 TI - Mouth breathing, occlusion, and modernization in a north Indian population. An epidemiologic study. AB - Village-dwelling Punjabi youths show significantly better dental occlusion and less chronic respiratory allergy than their city-dwelling counterparts. Field diagnosis finds posterior crossbite the only occlusal condition correlated with mouth breathing in the samples studied. PMID- 3863501 TI - Facial, dentoalveolar and dental morphology in serial or early extraction. AB - Matched controls are used to identify differences in facial morphology related to the severe crowding in patients treated with serial extraction or early extraction of bicuspids. PMID- 3863502 TI - Class II, division 2 treatment and mandibular growth. AB - A statistical evaluation of relationships between orthodontic treatment of Class II, Division 2 malocclusion and mandibular growth and position, finding significant positive effects of treatment. PMID- 3863503 TI - Alveolar arch dimensions, orthodontic treatment and absence of permanent teeth among Finnish students. An epidemiologic study. AB - Statistical comparison of arch width, length and palatal height with age, sex, orthodontic treatment and extractions finds little correlation except a tendency for larger dimensions in males, especially in palatal width, and differences related to postextraction drift. PMID- 3863504 TI - Alveolar arch dimensions and occlusal traits. An epidemiologic study. AB - A statistical evaluation of dentoalveolar relationships in a cross-section of young Finnish adults, finding little relationship between occlusal anomalies and dimensions of the alveolar arches. PMID- 3863505 TI - Space anomalies, missing permanent teeth and orthodontic treatment. AB - Statistical association of crowding and spacing with age, sex, orthodontic treatment and extractions finds a tendency for more maxillary posterior spacing in males and more lower anterior spacing in females. Extractions were also associated with spacing. No association was found between spacing and orthodontic treatment. PMID- 3863506 TI - Response of the midface to treatment with increased vertical occlusal forces. Treatment and posttreatment effects in monkeys. AB - Posterior occlusal bite blocks of varying thicknesses inserted in seven juvenile and six adolescent monkeys resulted in changes in maxillary position and dental intrusion. PMID- 3863507 TI - Reduced progesterone and altered cotyledonary prostaglandin values induced by locoweed (Astragalus lentiginosus) in sheep. AB - Feeding 300 or 400 g of dried spotted locoweed, Astragalus lentiginosus per day to 11 pregnant Columbia ewes from the 20th to the 50th days of their gestations resulted in dead and edematous fetuses. Aspartate aminotransferase values were increased, whereas serum progesterone values were significantly diminished (P less than 0.05) in a dose-dependent manner by locoweed ingestion. Cotyledonary 6 keto-prostaglandin (PG)F1 alpha (400 g/day only) and PGF2 alpha (300 and 400 g/day) values were significantly increased (P less than 0.05), whereas PGE values were not affected by the treatment. Alterations in PG values in these sheep may be a mechanism for altering corpus luteum function and inducing fetal death, which would ultimately result in abortion. PMID- 3863508 TI - Surgical treatment of juvenile rheumatoid arthritis. AB - Juvenile rheumatoid arthritis is rare and only affects a small number of children but can lead to severe crippling of adolescents or adults unless they are treated early. In this review the problems encountered in the surgical treatment, particularly those caused by skeletal stunting are discussed. The results of synovectomy of the knee and elbow are valuable procedures in suitably selected patients. Stapling of the knee in young children with genu valgum gave good correction in the majority. Soft tissue operation on the hip and knee in young children with severe deformities have given encouraging results. Complications and the results of reconstructive surgery for the hip and knee are discussed, and it was found that total joint replacement in these young patients with badly damaged hips is fully justified before they become chairbound. PMID- 3863509 TI - Cervical spine involvement in rheumatoid arthritis. AB - Cervical spine involvement in rheumatoid patients is common, the clinical symptoms varying from the asymptomatic state to severe occipito-cervical pain and various neurological syndromes. Atlanto-axial subluxation is the most common deformity and it should be operated on if it causes medullary compression signs or severe occipito-cervical headache and has an instability amplitude greater than 9 mm. Experience based on 155 cases of operatively treated rheumatoid cervical spine instabilities and deformities is described and discussed. PMID- 3863510 TI - Present attitudes on timing of surgical interventions in the treatment of rheumatoid disease. PMID- 3863511 TI - Synovectomy of the hand and wrist. AB - Synovectomy of tendons gives excellent results with rare recurrence. This is because the local environment is altered from a closed space into a decompressed area of healthy fat. The synovium can invade and destroy tendon, cartilage or bone when in a closed space and under pressure. Unfortunately, the environment can not be so altered in a joint. Joint synovectomy, however, is the only procedure available to prolong function of the patient's own joint (and relieve pain) for an "X" amount of time, which depends upon the course of the generalized disease. After two to three years, the result of a synovectomy is dependent upon the course of the general disease activity and not the surgery. It is absolutely necessary that general medical treatment be carried on before, during, and after surgery, as the surgery is only one incident, often dramatic, in total care of the patient. Chemical synovectomy of the hand has been shown to have variable results with only short-term gains being noted. Surgical synovectomy is indicated when synovitis persists in spite of adequate medical management and there is pain and early correctible deformities. Besides removing the synovium, it is necessary to reconstruct the capsular support and correct alignment. Flexor tenosynovitis in the fingers should be treated with decompression of the digital sheath, not incising the pulley system due to the possibility of accentuating the forces causing ulnar drift. Dorsal tenosynovitis in the wrist is treated by tenosynovectomy, synovectomy, resection of the distal ulna, reconstruction of the ulnar side of the wrist and transposition of the dorsal carpal ligament beneath the extensor tendons.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863512 TI - Elbow synovectomy. PMID- 3863513 TI - Shoulder synovectomy. AB - The technique and results of synovectomy of the shoulder joint in rheumatoid arthritis with a mean follow up time of 5.3 years (1-16 years) is described. The original method included resection of acromion after loosening of the deltoid muscle and splitting of the rotator cuff. Since 1981 the simpler approach of Neer without resection of acromion has been used (for synovectomy as well as for prosthetic replacement) with an easier postoperative management and equally good results. Only in 6 of 54 shoulders a total replacement prosthesis has been inserted later, an indication of the lasting good effect of synovectomy, even in advanced cases where an additional debridement was necessary. The best results are obtained in early cases. Radiographic changes are late, indications should be based more on clinical findings. Access to good training facilities is mandatory. PMID- 3863514 TI - A review of knee joint synovectomy in rheumatoid arthritis with theoretical and technical considerations. AB - The general idea regarding knee joint synovectomy in rheumatoid arthritis and author's own surgical technique to fulfil this challenge is described. The protection of the extensor mechanism of the knee from surgical damage and the technique of removing as much rheumatoid inflammatory tissue from the joint as possible by combining it with meticulous debridement procedure are of primary importance. Postoperative management should vary depending on and preoperative findings in the joint operated upon. According to the author, these ideas and techniques could be applied to any other joint of a patient suffering from rheumatoid arthritis. PMID- 3863515 TI - Correction of swan-neck and boutonniere deformities. AB - Rheumatoid arthritis frequently affecting the hand is a progressive and disabling illness. The delicate and precis digital motor mechanism is frequently affected by this disease and the consequences are devastating, with marked functional impairment. This paper discusses two of the most frequent digital deformities: the swan-neck and boutonniere. The pathophysiology, and classification according to the evolution grades of these deformities are presented. Practical application of various surgical techniques, each worked out and proven over 30 years of experience and a great number of cases treated is described. Unfortunately, the results are still modest in relation to the destruction created by this progressive pathology. However, we rely on certain modern techniques and thus obtain considerable functional improvement. The elastomer or silicone rubber prosthesis, implanted with sophisticated techniques and delicate handling of tissues is one of most significant innovations. PMID- 3863516 TI - Flexible implant resection arthroplasty for the rheumatoid hand and wrist. AB - Surgery of destroyed joints in the hand and wrist in the arthritic patient can be added to the armamentarium of the reconstructive arthritis surgeon. With proper patient selection, appropriate surgical technique, and postoperative management, rewarding results with freedom of pain and improved function can be expected. PMID- 3863517 TI - When does the rheumatologist need surgical consultation? AB - The rheumatologist is in many ways dependent on the help of the surgeon, from the early diagnosis of arthritis to the treatment of old destruction. The longer the medical history of the condition, the more important its surgical treatment. Collaboration between rheumatologists and surgeons should be encouraged. It is generally best to have a rheumatologist in charge of the patient. The rheumatologist then consults a surgeon when necessary. Rheumatologists must be sufficiently well acquainted with the indications for and prospects of surgical treatment. Only then can they consult a surgeon at the right moment on the need for surgical treatment. Rheumatological treatment and consultation units should be built to allow for convenient regular orthopaedic consultation. PMID- 3863518 TI - Total knee arthroplasty in rheumatoid arthritis. AB - Total knee replacement in rheumatoid arthritis has evolved into a very reliable procedure for the relief of pain and restoration of function. Minimum of two year follow-ups using the most recent components and surgical techniques show that pain relief is good in 97 per cent of patients and range of motion averages 111 degrees. Although the rheumatoid patient presents many potential hazards and problems because of systemic disease most of these can be minimized or overcome by meticulous attention to pre-operative evaluation, planning, and operative technique. PMID- 3863519 TI - The need for elbow replacement. PMID- 3863520 TI - Shoulder replacement arthroplasty. AB - Since 1973 64 shoulders in 56 patients have had a prosthetic replacement at the Oslo Sanitetsforening Rheumatism Hospital, the semi-constrained prosthesis of Lettin/Stanmore was used in 13 cases, the non-constrained prosthesis of Engelbrecht/St. Georg in 10 cases and Neer's type II prosthesis in 41 cases. An evaluation of the results is given. The minimal muscular loosening recommended by Neer is facilitating the postoperative training. The best results regarding function and pain reduction have been obtained by the Neer prosthesis, but the lack of cranial support ("fornix humeri") and the ovalization of the head seem to be responsible for some cases of upward migration of the head of the prosthesis. The ideal prosthesis should be non-constrained and come with different lengths of the neck and at least in two sizes of the head and several sizes of the stem. The glenoid socket should provide a cranial support facilitating the centering. Special problems are met with in juvenile rheumatoid arthritis. A best possible reconstruction of the rotator cuff and the deltoid is mandatory, requiring good technical skill. PMID- 3863521 TI - Reconstructive foot surgery. AB - In rheumatoid arthritis (RA) we find a high rate of foot involvements, especially in progressive cases when we see patients submitted for hospital treatment. In about 50% of these patients the ankle joints are involved (25), in juvenile RA even in two thirds of all cases. More than half of all progressive cases show also joint affections of the forefoot. Mainly the metatarsophalangeal joints are involved, especially the first MTP joint. We also can find a high involvement rate of the interphalangeal joint of the big toe. In RA the peripheral toe joints II-V are less frequently involved. Changes in these joints are very much likely to be caused by other inflammatory rheumatic diseases. Even more often than in the ankle joints we can find changes in the tarsal joints, as well as in the tarsometatarsal joints. As we know, in RA the incidence of surgery does not refer to the affection rate. The indication for surgery depends mainly on the amount of functional disability, pain, and the efficacy of conservative treatment. The need of these therapies can differ very much in various countries. E.g. in the Rheumatism Foundation Hospital, Heinola more than one third of all operations were foot surgery, whereas in our clinic, organised in a very similar way to Heinola, we have "only" 20%. Apart from tenosynovectomies and synovectomies at the ankle joint, the operations are nearly exclusively of reconstructive character. PMID- 3863522 TI - The role of non-prosthetic surgery in the treatment of rheumatoid arthritis by fusions and auto-arthroplasties. Current practice at the Rheumatism Foundation Hospital, Heinola. AB - After the introduction of modern artificial joints the classical operation methods, such as osteotomies, arthrodeses and auto-arthroplasties, have been forced aside little by little. Irrespective of the late complications following replacement surgery, the patients today expect a movable, painless endoprosthesis, which at it best seems to benefit the patient. The question arises whether the classical methods still have a role in the surgical treatment of rheumatoid arthritis. The reply is "yes", they do have a fair share of rheumatoid surgery, indeed. They still compete with the modern endoprosthetic surgery for the place of the primary operation in many cases. To give instances, tarsal reconstruction by subtaloid arthrodesis is superior to other methods and arthrodesis of the wrist is often only reasonable way to get a strong, painless key joint to the hand. Even the shoulder arthrodesis may successfully compete with an endoprosthesis. Also classical auto-arthroplasties such as resection arthroplasties of the metacarpophalangeal and elbow joints are serious rivals of respective endoprostheses. The practice of Rheumatism Foundation Hospital (RFH) in the golden mean between the endoprosthesis enthusiasts and their opponents will be described in this article. The practice varies greatly from clinic to clinic and is progressing--and regressing--all the time. PMID- 3863524 TI - Primary malignancies of the fallopian tube. AB - Ten cases of primary adenocarcinoma of the fallopian tube occurring over 23 year period are presented. The mean age of the patients was 61.2 +/- 9.2 years (range 48-77). Eight of the patients were postmenopausal. Abnormal vaginal bleeding was the most common symptom and was present in six patients. A pelvic mass was detected in seven cases. In one of the patients abnormal vaginal cytology was leading to correct diagnosis. The problem of the disease is a late diagnosis. Eight of the ten patients with tubal adenocarcinoma represented clinical Stage III or IV. Four of the patients are alive more than ten years after the diagnosis. A rare case of carcinosarcoma of the fallopian tube is presented. Only 26 such cases have been described in the literature to date. In addition a case of tubal choriocarcinoma is reported. PMID- 3863523 TI - Uterine sarcomas. AB - During 1962-1980, 44 uterine sarcomas were treated at the Department of Obstetrics and Gynaecology of Tampere University Central Hospital. Of the sarcomas, 35 (79%) were leiomyosarcomas, six (14%) endometrial stromal sarcomas and three (7%) endometrial carcinosarcomas. The 5-year survival for patients with leiomyosarcoma was 51 per cent. The 5-year survival rate for the premenopausal patients was 73% and that for postmenopausal patients 20%. The most important prognostic indicator was the gross presentation of the tumor at the time of surgery. Of the 5-year survival patients 94% were of clinical Stage I and of the failed patients 55%, respectively. Rather poor correlation was noted between the mitotic activity and survival rate. Metastases to the lungs were the most common failure pathway. All six patients with endometrial stromal sarcomas died within 25 months after the diagnosis. High oestrogen and progestin receptor concentrations were demonstrated in the endometrial stromal sarcoma. PMID- 3863525 TI - Quantification of urethral closure function by SUI threshold after pubococcygeal sling operation. AB - Thirty-one female patients were investigated 4.8 +/- 2.5 years after pubococcygeal repair for stress urinary incontinence (SUI). Eighteen patients had a successful operation with total cure or marked improvement and 13 had a failed operation. The results of the operation were further evaluated clinically by detailed patient history and urodynamically by urethrocystometry (UCM). The severity of the SUI symptoms was evaluated by recording the physical stress causing incontinence, restrictions of daily activities and social life and use of protective pads. The symptoms were graded by the SUI score ranging from 0 to 10. The bladder pressure rise necessary for urinary leakage during coughing (The SUI threshold) was measured by UCM. The mean SUI score was 2.2 +/- 1.0 and 6.9 +/- 4.8 after successful and failed operations, respectively and the SUI threshold was 85 cm H2O and 57.5 cm H2O after successful and failed operations, respectively. The SUI threshold had a significant negative correlation with the SUI score. It is suggested that the SUI threshold is a valuable addition to UCM determining objectively the results of incontinence surgery. It should be measured each time an UCM is performed. PMID- 3863526 TI - Relationship of vulvar lichen sclerosus et atrophicus to carcinoma. AB - Lichen sclerosus et atrophicus was an associated lesion in 16 of 30 (53%) patients with invasive vulvar carcinoma. In one case invasive carcinoma developed in the background of lichen sclerosus et atrophicus. Additionally in one case lichen sclerosus was found at the margin of the carcinoma. Despite the low malignant potential, patients with vulvar lichen sclerosus et atrophicus need long-standing observation and recurrent histologic examinations. PMID- 3863527 TI - Serum vitamin A and E levels in patients with lichen sclerosus and carcinoma of the vulva--effect of oral etretinate treatment. AB - Serum vitamin A and E concentrations were determined in six patients with vulvar epithelial carcinoma and in 25 patients with lichen sclerosus and atrophicus (LSA) of the vulva. No difference could be found in these levels between the two groups. LSA patients received oral etretinate for two months at least; improvement was observed in 93% of the patients. Etretinate therapy had no effect on the serum levels of vitamins A or E. PMID- 3863528 TI - Pharmacologic management and controlled cord traction in the third stage of labour. AB - Active management of the third stage of 62 944 labours over a period of 15 years (1970-84) constituted an intramuscularly administered combination of ergometrine (0.2 mg) and oxytocin (5 units), and controlled cord traction as mechanical assistance in delivery of the placenta. By these means manual removal of the placenta was performed in 0.67% of all deliveries, uterine inversion was found in 5 cases (1 in 12 588 deliveries) and blood transfusion necessary in 1.67% of all deliveries during puerperium. Oxytocin injection of 40-100 units into the umbilical vein of the retained placenta was performed in 40 cases. In 12 (30%) of these cases the placenta was separated by this new method. Previous use of intrauterine devices was a new etiological factor in the abnormally adherent placenta. PMID- 3863529 TI - The effects of long-term anticonvulsant drug therapy on vitamin D metabolites and mineral homeostasis in pregnant epileptic women and their newborns. AB - Serum concentrations of 25-hydroxyvitamin D (25(OH)D), (24,25(OH)2D), 1,25 dihydroxyvitamin D (1,25(OH)2D), total calcium, protein, phosphorus, magnesium and alkaline phosphatase (ALP) were measured in 21 epileptic and 20 healthy control mothers. Serum samples were collected in the third trimester of pregnancy and at delivery, when also mixed blood from the umbilical cord was drawn. 25(OH)D concentrations were similar in both groups and different anticonvulsant drugs had no effects on values. There were small alterations in dihydroxylated vitamin D metabolites. 24,25(OH)2D values were decreased and 1,25(OH)2D concentrations increased. The difference was significant (p less than 0.05) in maternal 1,25(OH)2D values at delivery. Other alterations were statistically almost significant. There was no difference between the diphenylhydantoin and carbamazepine groups. Calcium concentrations were significantly higher in the control than in the epileptic group (in the third trimester p less than 0.01 and at delivery p less than 0.001). Magnesium and phosphorus concentrations were similar in both groups. ALP concentrations were higher in epileptics than in control subjects. Though there were differences in maternal values between epileptics and controls, the fetal concentrations of the analyzed parameters were quite similar in both groups, except for ALP values, which were significantly higher (p less than 0.05) in epileptics than in controls. It was found only slight alterations in vitamin D metabolites. These changes cannot explain hypocalcaemia and osteopenia found often in these patients. PMID- 3863530 TI - Maternal blood haemostatic-fibrinolytic balance and intrauterine growth retardation. AB - In order to study the association between haemostatic-fibrinolytic balance during late pregnancy and retarded foetal growth, 22 mothers with suspected intrauterine growth retardation were studied by blood haematocrit and platelet count, plasma fibrinogen and serum fibrinogen degenerating products (FDP) in late pregnancy. Fifteen mothers with undisturbed foetal growth served as controls. No statistical differences could be found between these two groups of mothers in any of the studied blood parameters. It is thus concluded that a defect in the haemostatic fibrinolytic balance seems not to play any very important role in the etiology of intrauterine growth retardation. PMID- 3863531 TI - Clonidine in the treatment of hypertension during pregnancy. AB - Eighty two hypertensive pregnant patients were treated with clonidine during the last trimester of pregnancy. Clonidine was effective hypotensive agent in all groups treated; in essential hypertension (N 31), in mild pre-eclampsia (N 7), in severe pre-eclampsia (N 19) and in superimposed pre-eclampsia (N 24). The drug was well tolerated by the mothers. One fetus died in utero in severe pre eclampsia group for hypoxia and another infant died at the age of 1 day for sepsis. If antihypertensive treatment is needed during pregnancy, clonidine is one choice. PMID- 3863532 TI - The use of radiolabelled monoclonal antibodies to human milk fat globule membrane antigens in antibody-guided tumour imaging, and administration of therapeutic dose of labelled antibody in wide-spread ovarian carcinoma. A preliminary report. AB - Monoclonal antibodies generated against human milk fat globule membrane antigens were used in antibody-guided tumour imaging and palliative therapy in a case of wide-spread ovarian carcinoma. Antibody III H 2, which previously has been shown to react with 100% of ovarian cystadenocarcinomas showed a strong reactivity with tissue sections obtained from the primary and metastatic tumours of the patient. Immunoglobulins were purified from mouse ascitic fluid containing III H 2 and labelled with 123I or 131I with the iodogen method. 80 MBq (2 mCi) of 123I labelled antibody was given intraperitoneally in 500 ml of PBS and the uptake of radiolabel was followed daily with emission tomography. Radiolabel was mainly located in the peritoneal cavity; only a very low activity was seen in the thyroid gland and urinary bladder. A therapeutic dose consisting of 600 MBq (15 mCi) of 131I-labelled antibody was followed nine days later and the localization of the antibody was followed. PMID- 3863533 TI - Vitamin A and vitamin E in umbilical artery and vein. AB - Vitamin A and vitamin E concentrations were measured in 27 umbilical arterial and venous plasma samples obtained from 24 singleton pregnancies and one triplet pregnancy. The levels of both vitamins were similar in arterial and venous plasma (mean +/- S.D. vitamin A 209 +/- 41 micrograms/l and 220 +/- 51 micrograms/l; vitamin E: 2.31 +/- 0.74 mg/l and 2.31 +/- 0.76 mg/l, respectively), but individual differences were observed in some cases. A significant relationship (p less than 0.001) existed between the arterial and venous levels of both vitamins. However, when arterial vitamin A levels were plotted against venous levels, the slope of the regression line (0.61) was significantly (p less than 0.01) different from unity, which suggests that the placental transfer or fetal storage has an effect on the arterial-venous ration of this vitamin. The vitamin A values from the triplet pregnancy were quite low, but comparable with each other. PMID- 3863534 TI - Smoking and pregnancy: the influence of maternal and gestational factors on the outcome of pregnancy and the newborn. AB - In this multivariate prospective case controlled study a total of 576 pregnancies were examined. Of the mothers 162 were light, 46 moderate and 80 ex-smokers, and 288 non-smokers. Forty variants of the mother, pregnancy, delivery and the newborn were taken in consideration. The mean gestational age in all study groups varied between 276-280 days, the maternal gestational weight gain between 12.2 14.7 kg. No difference was observed in maternal pre-pregnant weight and height. Light smokers' newborns' mean birth weight was 3396 g, moderate smokers' 3196, ex smokers' 3516, and non smoking controls' 3577. When maternal size, gestational age and weight gain were standardised, smoking remained the only cause to explain the differences observed between smokers' and non-smokers' newborns' characteristics. No differences were observed between ex-smokers, women who stopped smoking during the first trimester of gestation, and non smoking controls. PMID- 3863535 TI - Low serum oestriol and Cushing's syndrome during pregnancy. AB - Previously in world literature there have been reports of 40 pregnancies in women with untreated Cushing's syndrome. The perinatal mortality in these series has been 12.9%. This paper reports on a case in which low serum oestriol excretion was the first abnormal laboratory value in a patient with only a few signs of Cushing's syndrome habitus and adrenal adenoma. PMID- 3863536 TI - The effect of hot and cold external application on experimentally induced inflammatory edema in guinea pigs: a pilot study. PMID- 3863537 TI - The inflammatory potential of dental Hydron: a literature review and pilot investigation in rats' connective tissue. PMID- 3863538 TI - A quick reference to common oral analgesics. PMID- 3863539 TI - Oligodontia: report of a family. PMID- 3863540 TI - Inheritance of hypodontia in consanguineous families of Arabic descent. A case report. PMID- 3863541 TI - Oral pathology biopsy service in a developing country, Nigeria. PMID- 3863542 TI - Applications to dental auxiliary training programs are returning to normal. PMID- 3863543 TI - The effects of naloxone in Tourette's syndrome. PMID- 3863544 TI - Nasal interferon responses in leukaemia. AB - Nasal concentrations of leucocyte interferon measured immunoradiometrically were appreciably higher in children infected with influenza viruses than those infected with paramyxoviruses. Regardless of the infecting virus, leukaemic children produced normal amounts of interferon, but this appeared to have little effect on the duration of excretion of virus. PMID- 3863545 TI - Weight gain and height velocity during prolonged first remission from acute lymphoblastic leukaemia. AB - A retrospective analysis of the medical records of 86 children in prolonged remission from acute lymphoblastic leukaemia was performed to calculate changes in the rate of increase in height and weight gain. The rate of increase in height decreased during initial treatment, and the potential for final adult height was not regained. Weight gain was excessive; this started during treatment and persisted into the remission years. Values of weight adjusted for height did not return to values found before treatment until eight years after diagnosis. Several factors can account for this weight gain, but there is a practical need to provide dietary advice, particularly when chemotherapy is stopped. PMID- 3863546 TI - Epidermal synthesis and expression of HLA-DR on keratinocytes in lupus erythematosus. AB - It has been suggested that aberrant expression of HLA-DR plays an important role in the induction of an autoimmune reaction. In lupus erythematosus (LE), skin represents a major target for autoimmune attack. We therefore tested lesional and nonlesional skin from 11 patients with different clinical subtypes of LE for the presence of HLA-DR molecules on keratinocytes using a monoclonal antibody against a non-polymorphic HLA-DR determinant. In all lesions tested, HLA-DR-positive keratinocytes were present, whereas in nonlesional skin, these cells remained HLA DR negative. To exclude the possibility of passive absorption of DR molecules, the de novo synthesis of HLA-DR was demonstrated by the presence of cytoplasmic HLA-DR gamma chains in keratinocytes. If aberrant HLA-DR expression is a primary event, it could facilitate the recognition of autoantigens on keratinocytes by immunocompetent cells. Alternatively, the synthesis of DR molecules could be induced as a secondary event by mediators derived from the inflammatory infiltrate. PMID- 3863547 TI - Primary osteosarcoma of left atrium: complete surgical excision. AB - A patient with primary osteogenic sarcoma of the left atrium with clinical features of severe congestive heart failure is described. The operative procedure required excision of the posterior atrial wall in continuity with the left pulmonary veins. The resultant defect in the atrium was reconstructed with the left atrial appendage. The left pulmonary artery was ligated, and the lung was removed at a subsequent procedure. The patient survived operation but subsequently was found to have distant metastasis. He died seven months after the operation. PMID- 3863548 TI - Somatic symptoms in primary affective disorder. Presence and relationship to the classification of depression. AB - The incidence and severity of somatic symptoms were determined in 132 patients with major depressive disorder and 80 normal controls. The role of somatic symptoms was analyzed in relation to the unipolar-bipolar division, Research Diagnostic Criteria (RDC) subtypes, hypersomnia, and appetite increase. The data suggest that the rate and level of somatic symptoms increased with the severity of depression and age, only appetite loss differentiated unipolar from bipolar patients, and the classic somatic symptoms of depression were present in most RDC subtypes and not exclusively associated with the "endogenous" subtype. Hypersomnia or increased appetite identified two overlapping depressive subgroups; patients in both groups were young and characterized by high interpersonal sensitivity. Hypersomniac depressed patients were less anxious and agitated; patients with increased appetite were more hostile and showed a greater decrease in libido than age-matched and sex-matched patients with neither symptom. PMID- 3863549 TI - Osteosarcoma after the fourth decade. A clinico-pathological review. AB - Of 160 cases of osteosarcoma seen over an 18-year period, 18 were over the age of 40 at the time of presentation. The clinical presentation and histology of these cases is reviewed. Delay in referral and incorrect histological diagnoses were frequent. Only 2 cases were associated with Paget's disease. PMID- 3863550 TI - Dental cariogenic evaluation of foods using human plaque pH and an experimental rat-caries model. AB - Five well-characterized foods were used to compare two systems for estimating the cariogenic potential of food: human plaque-acidity using interdental metallic touch electrodes, and cariogenicity testing in rats. Both systems identified the same food as the least cariogenic or acidogenic food and identified the same three foods as being both cariogenic in rats and acidogenic in man, although the ranking of these foods differed. The systems differed in their assessment of potato chips, a food high in cooked starch and low in free sugars. The results confirmed that non-acidogenic foods are non-cariogenic, but that foods acidogenic in man may exhibit a greater range of cariogenicity in rats. Data from both human plaque pH studies and rat caries models may permit better assessment of cariogenic potential of foods containing fermentable carbohydrates. PMID- 3863551 TI - Ultrastructure of intra-epithelial nerve endings in the hard palate of the rat, Rattus norvegicus. AB - The ultrastructure is described of lanceolate and free nerve endings within the epithelium of the papillae of the intermolar palatal rugae, located either between the basement membranes and the bases of the epithelial cells, or suprabasally in the intercellular spaces of the epithelium. Cytoplasmic processes of epithelial cells invaginated the Schwann cells of the nerve endings; junctions between, or fusion of, the cell membranes of the epithelial cells and the Schwann cells were not found. The neurites of the nervous structures were characterized by numerous mitochondria, clear-cored vesicles and an axoplasmic reticulum. In lanceolate endings, asymmetric membrane densities existed between the neurite and its Schwann cell, the Schwann cell showing signs of pinocytotic activity at all sides of its plasma membrane. The basal lamina of the Schwann cell covering of the nerve endings appeared to be continuous with the basal lamina of the epithelium. PMID- 3863552 TI - Development of sensory and reflex responses to tooth-pulp stimulation in children. AB - Electric stimulation was applied to the tooth-pulp and tongue in 12 children divided into 3 groups according to the development of the roots of the upper first incisors, i.e. 1/2, 3/4 and fully formed. The masseter inhibitory periods (MIP) could be evoked by electric stimulation of the tongue at sensory threshold current levels in all children, but only for incisors with fully-formed roots. Stimulation of incisors with 3/4 formed roots at detection-threshold currents produced sensation 56 per cent of the time and detectable MIP on 65 per cent of stimuli. No sensation was obtained with stimuli up to 100 microA in incisors with 1/2-formed roots, but MIP was recorded with 31 per cent of stimuli. The findings indicate that reflex activity precedes sensation in the normal development of teeth, and that segmental, reflex, connections appear to be established before the cortical, sensory, projections are fully functional. PMID- 3863553 TI - An X-ray diffraction and solubility study of equilibration of human enamel-powder suspensions in fluoride-containing buffer. AB - Various amounts of enamel-apatite powder were suspended in an acetate buffer (pH 4.5) containing sufficient fluoride to give molar ratios of fluoride/apatite from zero to unity. The suspensions were equilibrated at 20 degrees C for periods between 4h and 1 year, with continuous gentle stirring. Solubility studies showed dissolution of hydroxyapatite, formation and re-dissolution of calcium fluoride and formation of fluorapatite. The amount of mineral dissolved was low during the fluorapatite formation and increased by a factor of approx. 10 as equilibrium was approached. The fluoride content of the solid apatite, which ranged from 0.1 to 70 mol% fluorapatite, only influenced the solubility slightly, whereas the fluoride content of the bathing solution had a large effect. X-ray diffraction showed a linear correlation between the fluoride content and the a-axis of the apatite. PMID- 3863554 TI - Differential inhibition of A, B and C fibres in the rat vagus nerve by lidocaine, eugenol and formaldehyde. AB - Evoked compound-action potentials (cAP) in all three fibre types of the isolated nerve were reversibly depressed by exposure to the drugs. After 20 min exposure, lidocaine (0.5 mM) depressed the amplitude of the A and B fibre potentials significantly more than the C fibre potential. With eugenol (0.8 mM), there was no significant difference in depression of A, B and C fibre activity. With formaldehyde (4.5 mM), the latency was longer, and the C fibres were initially significantly more depressed than the A and B fibres. As dull pain from a chronically-inflamed pulp is believed to be mediated through C fibres, these results may explain the difficulties in obtaining complete local analgesia with lidocaine. They indicate that application of low concentrations of eugenol and formaldehyde to the pulp-dentine organ may have an analgesic effect on pain mediated through both A and C fibres. PMID- 3863555 TI - In-vitro permeability of porcine oral mucosa after epithelial separation, stripping and hydration. AB - The permeability of porcine skin, gingiva, floor of mouth and buccal mucosa was measured in perfusion chambers using isotopically-labelled water and horseradish peroxidase. Values obtained for the permeability of the epithelium of each of these regions, after separation from the connective tissue with EDTA, did not differ significantly from those obtained for the intact tissue; however, the connective tissue alone had a permeability 2-8 times greater than that of the whole tissue. Stripping the surface layers of the floor of mouth mucosa increased its permeability to that of connective tissue. These results indicate that the functional permeability barrier of the oral mucosa, like that of skin, is located in the epithelium and occupies the superficial layers. After exposure to an aqueous environment for up to 67 h, the permeability of skin and keratinized oral mucosa showed similar but slight increases whereas that of non-keratinized mucosa showed a more rapid rise. These differences may reflect the different composition of the intercellular permeability barrier in keratinized and non-keratinized oral tissues. PMID- 3863556 TI - Lead in teeth of weanling rats received via the maternal drinking water. AB - Pregnant rats were dosed with 0, 3 or 10 parts/10(6) lead (as acetate) in their drinking water, during pregnancy and during lactation until 21 days post partum. The litters were killed at the age of 21 days and the incisors, first, second and third molars analysed for lead by atomic absorption spectrophotometry. The findings confirmed that even at low concentrations lead has an affinity for hard tissues. The mean lead levels of the teeth of the three groups differed at the 1 per cent level. Pb levels of the first and second molars and the incisors also differed at the 1 per cent level. No significant differences between the four types of teeth within a group could be demonstrated. The no-effect level of Pb administered in drinking water, to the mother during lactation, and during pregnancy, was lower than 3 parts/10(6). PMID- 3863557 TI - A scanning electron microscopic study of bacterial penetration of human enamel in incipient caries. AB - In 23 human teeth, cracked enamel under white spot lesions without any visible loss of tooth substance was examined. Bacterial contamination from the enamel surface was prevented by brushing and consequent fixing of the remaining surface coatings before the enamel was fractured. In 7 of 23 specimens, bacterial colonies were observed under the enamel surface, sometimes as deep as the enamel dentine junction and the dentine. In most samples the subsurface enamel appeared to be partly disintegrated. Bacteria can thus be found under surface enamel at an early stage of caries while the surface is still intact. PMID- 3863558 TI - Analytical transmission electron microscopy of the distribution of elements in human supragingival dental calculus. AB - Thin sections of supragingival calculus from lower anterior teeth of 26 subjects were examined. From each specimen, an average of 10 spectra was collected from a densely-mineralized area less than 100 micron diameter. Only spectra showing peaks for minor elements or unusual Ca:P peak ratios were collected, stored and analysed semi-quantitatively. Ca:P weight percentage ratios varied within each specimen. Although most lay within the range 1.6 to 1.8, ratios of less than 1 and greater than 22 were obtained. The latter indicated the presence of some P free Ca salts. The minor elements Mg and Zn occurred most frequently but the concentration within a specimen varied from the undetectable up to approx. 3 per cent by weight for Mg and 1 per cent for Zn. Low peaks for Ti, Ni, Co, As, Sr, Zr, Mo, Cd and Sn occurred in 1 to 3 spectra from a few specimens, indicating localized areas rich in one of these elements. Low to questionable Pb peaks were present in at least one spectrum from each of 20 specimens. There is thus a non homogeneous distribution of Ca and P and of many minor elements throughout the calculus. PMID- 3863560 TI - The effect of stimulus intensity and gape on electrically-evoked jaw reflexes in man. AB - The changes in masseter EMG and biting force evoked by electrical stimulation of the lip were measured in normal people. Stimulation at noxious intensities elicited a characteristic, biphasic inhibitory response in the masseter EMG and a transient reduction in the biting force. The pattern of masseter inhibition and force change varied both with stimulus intensity and with inter-incisal separation. In general, the decrease in biting force was greater at intermediate jaw positions than in the open and closed positions. The duration of the EMG inhibitory period increased as the stimulus intensity increased but was independent of the jaw separation. Reflex thresholds could not be correlated with pain thresholds because subjects found it difficult to decide at what level an electrical stimulus became painful. Nevertheless this stimulation of high threshold afferents may be useful in estimating the rate of relaxation of tension in the jaw muscles. PMID- 3863559 TI - Differential sensitivity of normal human pulp and transformed mouse fibroblasts to cytotoxic challenge. AB - Six different lines of diploid cells from human pulp and one commonly used transformed-cell line, L929 (a continuous fibroblast line of mouse lung connective tissue origin), were challenged by sera changes, an agar-overlay toxicity test and transfilter-histochemistry-toxicity test. The normal diploid cells showed greater sensitivity than transformed cells in each test. Although a different parameter of cell toxicity was measured in each test, the data indicate greater toxic response in diploid cells by all measurements. These normal diploid human cells are more appropriate cells for toxicity testing materials for human use. PMID- 3863561 TI - Relationship of adhesion in vitro and cariogenicity of oral Streptococcus species in germ-free rats. AB - Thirty-two strains of Streptococcus spp., of known cariogenicity in the gnotobiotic WAG/RIJ rat, were tested for their in vitro adhesion properties. Computerized image analysis measured percentage coverage by, and clump size of, cells adhering to saliva-coated glass. An analysis of variance revealed significant differences for percentage coverage for the majority of species pairs. There were fewer significant differences for mean clump size between species-pairs. Within the Strep. mutans group there was a highly-significant difference between Strep. mutans/Strep. cricetus (p less than 0.01) with respect to mean clump size. There was a significant correlation between cariogenicity and percentage coverage (p = 0.05) but not clump size (p = 0.359) for pooled strains of Strep. mitis and Strep. sanguis combined. PMID- 3863562 TI - Inhibition of calcium-carbonate precipitation by human salivary proline-rich phosphoproteins. AB - The effects of the proline-rich phosphoproteins (PRP) on the rate of precipitation of CaCO3 from a CaCO3-supersaturated solution were examined by recording the absorbance at 570 nm and the pH, when 20 mM CaCl2 was added to 20 mM NaHCO3, in the presence or absence of proteins. The PRP suppressed CaCO3 nucleation and exhibited inhibitory effects on CaCO3 precipitation under those conditions and under stimulated physiological conditions (final concentration of Ca2+ was 2 mM and that of HCO-3 60 mM, pH was 8.0 at 37 degrees C). PRP may be of biological significance in maintaining homeostasis of the buffering system of saliva, which is mainly composed of bicarbonate, and in preventing the formation of stones consisting of CaCO3 in the salivary ducts. PMID- 3863563 TI - Some reflections of 30 years experience in the management of large bowel cancer. PMID- 3863564 TI - Postoperative wound infection with methicillin-resistant staphylococci in general surgical patients. AB - A prospective survey of 1757 general surgical patients undergoing operation was performed comparing 35 patients with wound infection yielding methicillin resistant Staphylococcus aureus (MRSA) with 184 patients developing wound infections due to other organisms. The following parameters were statistically significantly increased in the patients with MRSA wound infection; MRSA infection or colonization at other sites, 37% versus 2%, severe wound infection 31% versus 12%, wound drain tubes 23% versus 10%, multiple operations 37% versus 6%, malignant disease 43% versus 23%, postoperative complications 46% versus 16%, intensive care admissions 23% versus 5% and prophylactic antibiotics 51% versus 30%. There was no difference in postoperative mortality 11% versus 7%; mean age, 58 years versus 56 years; sex; diabetes, 11% versus 9%; or emergency operations 40% versus 39%. There were 18 patients with single organism MRSA wound infection who were compared with 35 patients with single organism methicillin-sensitive S. aureus (MSSA) wound infection. The patients with MRSA wound infections had a statistically significant increase in the following parameters: mean preoperative stay in hospital 8 days versus 4 days; prophylactic antibiotics 39% versus 3%; MRSA infection or colonization at other sites 39% versus 6%; and malignant disease 44% versus 17%. There were no deaths in either group and there was no statistically significant difference in other parameters, namely, multiple operations 11% versus 3%; intensive care admissions 6% in each group; wound drain tube 17% versus 11%; severe infections 22% versus 6%; and postoperative complications 22% versus 9%. These latter parameters were statistically significantly increased when all MRSA wound infections were compared with all wound infections due to other organisms. PMID- 3863565 TI - Fistula-in-ano: treatment by fistulectomy, primary closure and reconstitution. AB - One hundred and twenty cases of fistula-in-ano were treated in 11 years by fistulectomy and primary closure. Injection of dye into the tract helped in identifying the tract and its ramifications which were excised. A lateral sphincterotomy was added in most cases for relief of postoperative pain and to promote good healing. Of the cases, 83.3% healed well in 2 weeks as compared with 4-5 weeks or more with conventional methods resulting in great economy in hospital stay and morbidity. Follow-up of these cases for a variable period, up to five years, revealed only three recurrences, indicating a comparable long term effectiveness of this procedure as in the conventional method. PMID- 3863566 TI - The electrical hazards of fixed abdominal retractors. AB - Abdominal retractors that are fixed to the operating table provide an electrical pathway to earth and are unsafe. Modifications to ensure the electrical safety of two table mounted abdominal retractors by the incorporation of insulators are described. Results of electrical testing show that the insulators provide high levels of insulation to direct current, 50 Hz alternating current and 400 kHz radio frequency current. PMID- 3863567 TI - Data on spinal injuries--Part I. Collection and analysis of 352 consecutive admissions. AB - A prospective system of data collection, using computer storage, has been developed in the Spinal Injuries Unit, Austin Hospital. Three hundred and fifty two consecutive admissions to the Unit between 1 July 1978 and 31 December 1982 are analysed, and this epidemiological data compared with other reports. Over 92% of the admissions were the result of spinal cord trauma and the balance due to a variety of non-traumatic causes. A high incidence of young males injured in road accidents, predominantly from motor cars, and lesser numbers from sporting, occupational and domestic accidents is noted. A high proportion of country accidents and a disproportionately high number of people who live in country areas indicates the need for greater concentration of preventative measures to rural areas. The study has confirmed the usefulness of such a sophisticated data collection system to collect, at relatively low cost, useful epidemiological data on a specific disability group. The system will help to plan treatment programmes, as well as preventative measures, for the future. PMID- 3863568 TI - Pulmonary valvotomy under normothermic caval inflow occlusion. AB - Pulmonary valve stenosis may require urgent surgical relief in infancy or elective valvotomy in childhood. A retrospective study has been made of 94 children who underwent pulmonary valvotomy for pulmonary valve stenosis between 1972 and 1983 using the technique of normothermic caval inflow occlusion. There were no early deaths nor late deaths. The group included 13 neonates less than 1 week old and 14 other infants under 1 year of age. The mean follow-up is 45 months. No child has had a second valvotomy for recurrent valvar stenosis. Two children have required re-operation for placement of a transannular right ventricular outflow patch for hypoplastic pulmonary annulus. Neonates who present early with critical pulmonary valve stenosis may remain moderately to severely cyanosed for several days after a satisfactory valvotomy but this is almost invariably followed by a progressive increase in oxygen saturation to an acceptable level. One neonate, who had a Blalock-Taussig shunt at 2 weeks of age for persistent postvalvotomy cyanosis, had the shunt ligated at 2 years. Pulmonary valvotomy under normothermic caval inflow occlusion is a safe, cost effective technique which provides excellent early and late haemodynamic results. This operation sets a standard against which the newly introduced technique of percutaneous balloon pulmonary valvotomy should be assessed. PMID- 3863569 TI - Endoscopy and intubation in cancer of the upper aerodigestive tract. AB - The pathogenesis of upper airway obstruction from cancer arising in the larynx, pyriform fossa and oropharynx is discussed. Endotracheal intubation for general anaesthesia can be a hazardous procedure and alternatives are presented. PMID- 3863570 TI - A success and cost analysis study of the methods of managing impacted lower ureteric calculi. AB - A personal series of 216 non-consecutive patients with renal calculi, measuring up to 0.7 cm in diameter, impacted in the lower third of their ureters were reviewed at least 2 years after either spontaneous expulsion of the calculus or surgical removal had been achieved in an endeavour to compare the natural history and complications of spontaneous expulsion with the results and complications of both attempted endoscopic and open extraction operations and the cost effectiveness of these different methods of management. Spontaneous expulsion, without detectable complications, occurred within 3 months of presentation in 88% (88 of 100 patients) with calculi measuring 0.5 cm or less but was achieved in only 44% (9 of 16 patients) with calculi measuring between 0.5 and 0.7 cm despite a maximum 12 months period of expectant management. Of 100 attempted endoscopic calculus extractions, the operative success rate averaged 62%, without any significant complication, for those calculi measuring 0.5 cm or less but only 22%, with a significant complication rate of 19%, for calculi measuring between 0.6 and 0.7 cm. The average 1983 costs ranged from +1960 for a non-hospital spontaneous expulsion to +5278 for the failed endoscopic extraction of a larger calculus which subsequently required open surgical removal. PMID- 3863571 TI - An experimental study of iatrogenically induced operating theatre burns. AB - An experimental study was undertaken to investigate the rate of decay of heat from standard orthopaedic mallets post-autoclaving. A temperature-specific burn analysis was performed using a laboratory animal model, and in combination with the results of the heat decay study, the identification of a 'critical zone' has been made. It is during this 'critical zone' that iatrogenic burns can occur. Two economically viable, practical solutions are offered. One is an autoclavable thermometer which can be included in the instrument tray. The second is a 'new design' orthopaedic mallet. The most reliable preventative measure, however, is constant vigilance. Iatrogenic burns can and do occur. PMID- 3863572 TI - Avulsion versus dissection and ligation of the varicose short saphenous trunk. AB - Avulsion of the varicose short saphenous trunk in the popliteal fossa is a safe, effective and cosmetic way of dealing with this type of venous incompetence. In addition it effects a great saving in time, a consideration of some importance in the surgical treatment of varicose veins. PMID- 3863573 TI - Post-proctectomy perineal hernia: case report and discussion. AB - Perineal hernia is a rare complication of pelvic surgery. Women are more commonly affected, and development of the condition is usually gradual. Although the true incidence of this problem is unknown, few cases are severe enough to require operative repair. We report the experience of one of the authors (E.S.R.H.) in post-proctectomy perineal hernia. One case required surgical repair and is presented, with a discussion of the operative management. PMID- 3863574 TI - Intussusception, volvulus and malrotation. AB - A case of ileocolic intussusception, associated with mid-gut volvulus and malrotation with bowel necrosis is reported. There is evidence to suggest that the intussusception preceded the volvulus. PMID- 3863575 TI - Resection margins for melanoma. PMID- 3863576 TI - Surgical treatment and survival from cutaneous malignant melanoma. AB - Varied methods of primary surgical treatment of 189 cases of cutaneous malignant melanoma studied in Western Australia had no statistically significant effect on prognosis. The results indicate that wide excision is not justified as the standard treatment of cutaneous malignant melanoma. PMID- 3863577 TI - Current status and controversies in the management of genito-urinary cancer. PMID- 3863578 TI - Chemotherapy of invasive carcinoma of the bladder. AB - Cytotoxic chemotherapy does not yet have a service role in the management of invasive carcinoma of the bladder, though the minor palliation achievable in patients with symptomatic recurrent primary or metastatic disease does justify its use in patients whose symptoms are not controlled by standard analgesia. For the future, progress will depend on more intense screening of new drugs in centres specializing in undertaking Phase 2 Trials on patients with measurable metastases. However, there is in addition a need for studies measuring primary tumour response to drugs in combination with radiotherapy which still remains the most active single agent in the non-surgical treatment of carcinoma of the bladder. PMID- 3863579 TI - The management of severe ureteric anomalies in infancy. AB - Sixteen infants with severe ureteric anomalies were admitted to the Paediatric Unit over the years 1980-81. The two principal aims of treatment were firstly, initial resuscitation and the treatment of severe sepsis, thereby mostly avoiding early operative urinary diversion, and secondly to proceed to corrective surgery when the infant was sufficiently recovered. Initial management included resuscitation, intravenous antibiotics, parenteral nutrition, and where necessary bladder drainage by urethral catheter. Peritoneal dialysis was not required. The diagnosis was established by urography and ultrasound. Surgical urinary diversion was performed on only two of the cases, and results from early corrective surgery have been satisfactory. PMID- 3863580 TI - Head and neck cancer staging systems: a comparison between UICC and AJC. AB - Two major TNM classification systems are currently in use for staging cancer of the head and neck region, i.e. UICC and AJC. This causes confusion when attempting to exchange information and evaluate treatment results between Australia and certain overseas centres. The two systems are described and the effect of any differences on altering survival data is assessed by reviewing 234 cases of squamous carcinoma of the larynx, hypopharynx, oropharynx and oral cavity. The direct correlation between the two systems is established. Shortcomings of the systems are demonstrated and important variables not included in either TNM system are discussed. PMID- 3863581 TI - Vertical partial laryngectomy for glottic carcinoma. AB - Vertical partial laryngectomy is recommended as primary treatment for selected T2 glottic cancers. Some irradiation failures are also suitable but the indications are more restricted. A careful assessment of the cancer is mandatory. Of 12 patients undergoing primary surgery, no patient has died from their disease. Five of seven irradiation failures were salvaged by vertical partial laryngectomy. PMID- 3863582 TI - Postpartum rupture of a renal artery aneurysm to a solitary kidney. AB - We present the case of the first known survivor of postpartum rupture of a renal artery aneurysm where the contralateral kidney was congenitally absent. An important surgical principle, that of establishing the presence of one kidney before removing the other, is illustrated. PMID- 3863583 TI - Cigarette smoking by pregnant women with particular reference to their past and subsequent breast feeding behaviour. AB - 1,790 postpartum women were asked about their smoking habits and baby feeding practices and about a number of other attitudes and physical attributes. For those variables not concerned with baby feeding, our findings generally support previous research; for example, smokers in comparison to non-smokers tended to have more emotional problems, more reproductive failures and babies with lower birth-weights. For baby feeding, we found that smokers tended to have little prior knowledge of breast feeding, favour bottle feeding, have been fed by bottle by their mothers, and wean earlier than non-smokers or ex-smokers. In fact, non smokers as a group were similar to breast feeders as a group, and smokers like bottle feeders for over 20 characteristics. These similarities were mostly the result of features of smoking and baby feeding behaviour being found in a common personality type; for example, use of tobacco and choice of bottle feeding are probably attributes of nervous, insecure mothers. But some similarities were the result of the influence of tobacco smoke; for example smokers who do breast feed wean earlier, probably because chemicals in tobacco smoke inhibit milk production. PMID- 3863584 TI - Elevated second trimester amniotic fluid myoglobin from a fetus with Duchenne muscular dystrophy. PMID- 3863585 TI - Histocompatibility antigens and intrauterine fetal growth retardation. AB - Maternal-fetal antigen compatibility adversely affects fetal and placental weights in animal experiments and is associated with recurrent spontaneous abortion and preeclampsia in human reproduction. HLA A and B types of the mother, father and infant were determined in 30 pregnancies complicated by intrauterine fetal growth retardation (IUGR) and in 32 normal pregnancies. The frequency and degree of antigenic compatibility between the parents and the mothers and their infants were compared between the groups. There was no evidence that IUGR was associated with a significant degree of HLA A and B antigenic compatibility. PMID- 3863586 TI - Changes in lymphocyte status and responsiveness in pregnancy detected by a fluorescent cell probe. AB - Lymphocyte reactivity assessed by a fluorescent lipophilic probe test of responsiveness to concanavalin A (con A) was shown to differ from normal in early pregnancy. The difference was most marked in multiparas. Abnormal reactivity was detected in the earliest pregnancy examined (5 weeks' gestation) and up to about the 20th week; after 20 weeks, reactivity was normal in all of the multiparas and most of the nulliparas studied. However, in pregnancy induced hypertension (PIH), a disorder of late pregnancy, the same responsiveness as in early pregnancy was found. When unstimulated lymphocytes were examined, abnormal reactivity associated with increased fluorescence was observed in early pregnancy and in PIH, compared with normal late pregnancy, reflecting alteration in lymphocyte membrane phospholipids. It is postulated that pregnancy is associated with sequential change in immunity, disturbance of which may result in immunologically determined obstetric morbidity. PMID- 3863587 TI - The premenstrual syndrome in Chinese. AB - A questionnaire survey of 84 Chinese nurses was carried out to assess the presence of premenstrual syndrome. More than half of the respondents reported emotional changes and backache premenstrually. There were significant associations between nausea and breast changes, irritability and depression, body and skin changes, finally between backache and the 3 symptoms of irritability, headache and the necessity to take time off work. PMID- 3863588 TI - Colonic pseudo-obstruction: an uncommon complication of caesarean section. AB - Four cases of pseudo-obstruction following lower segment Caesarean section are presented with a review of the condition. In the first patient the diagnosis was made at laparotomy, but the other 3 were diagnosed on clinical and radiolographic grounds. Two of these subsequently required surgical caecal decompression, while only 1 was successfully managed conservatively. This is typical of the spectrum of this uncommon but well recognized syndrome which may complicate Caesarean section, vaginal delivery, hysterectomy or other gynaecological operations. When diagnosed, the initial management may be conservative, but close surveillance of caecal diameter must be maintained in order to prevent disastrous caecal rupture. When this is imminent, decompression by either colonoscopy, or laparotomy and caecostomy is indicated. With early surgical intervention, the high mortality rate for this condition can be greatly reduced. PMID- 3863589 TI - Bilateral juvenile granulosa cell tumours associated with skeletal enchondromas. AB - Asynchronous bilateral granulosa cell tumours of the ovary occurred in a patient with enchondromas. The first tumour, presenting at age 15, was misdiagnosed initially as an androblastoma. The second tumour presented 7 years and 3 pregnancies later. The possible therapeutic and pathogenetic implications of these observations are discussed. PMID- 3863590 TI - Recurrent dysgerminoma after 33 years. AB - Surgery with or without radiotherapy produces a high cure rate in localized pure dysgerminoma of the ovary. Recurrence rates are low, and usually occur within 2 years. We report the case of a 58-year-old para 1 who developed recurrent pure dysgerminoma 33 years after initial surgery. The need for long-term follow-up of these patients is emphasized. PMID- 3863591 TI - Congenital absence of fallopian tube segments. AB - A case is reported in which laparotomy demonstrated that the proximal portion of the left Fallopian tube was absent and that the distal end was separated into 3 portions. There is no previous report of a congenital abnormality of this type. PMID- 3863592 TI - A rare pelvic mass: osteosarcoma of the body of the uterus. AB - A rare, enormous, unresectable, osteosarcoma of the uterus is reported. This obstructed ureters, enclosed rectum, bladder, aorta and vena cava, and metastasized to peritoneum, lungs and liver causing death of the patient by renal and pulmonary failure. PMID- 3863593 TI - Cul de sac fibrothecoma simulating a parasitic fibroid. PMID- 3863594 TI - A decidual cast following therapy with norethisterone. AB - A case is presented of a decidual cast following progesterone therapy, an extraordinarily rare event. PMID- 3863595 TI - Benign senile pyometra, endometrial cholesterol granulomas and adenosquamous carcinoma. AB - Endometrial curettage of a 78-year-old patient with benign senile pyometra revealed endometrial cholesterol granulomas. Five years later cytological studies were suspicious of malignancy. Hysterectomy disclosed an endometrial adenosquamous carcinoma associated with cholesterol granulomas. We speculate that endometrial cholesterol granuloma, like endometrial xanthogranuloma, represents a rare morphologic variant of benign senile pyometra. Consequently a strong association with carcinoma is to be expected. PMID- 3863596 TI - New chorion biopsy catheter. PMID- 3863597 TI - Wellington Hospital vaginal retractor. PMID- 3863598 TI - Unicornuate uterus and reproductive performance. PMID- 3863599 TI - Growth retardation in twins. PMID- 3863600 TI - Pregnancy induced hypertension complicated by thrombocytopenia, haemolysis and elevated liver enzymes (HELLP) syndrome. Renal biopsies and outcome. AB - Twelve patients are presented with the symptomatology of haemolysis, elevated liver enzymes and low platelet count (HELLP syndrome). Only 3 patients experienced a progressive course; the rest did not differ from a group of 130 patients suffering from severe preeclampsia. There was no significant difference in the concentration of plasma fibrinogen, fibrinogen monomer complex and antithrombin III. Two patients were treated with heparin without improvement of the coagulation data or the severity of the disease. The subgrouping of very severe preeclampsia may be desirable, but it is felt that this group is insufficiently characterized by the symptomatology of HELLP. The evaluation of better criteria may allow identification of subgroups of preeclamptic patients with severe prognostic criteria. PMID- 3863601 TI - Epidemiology of meconium staining of amniotic fluid in Hong Kong. AB - The characteristics of 94 patients with meconium stained amniotic fluid diagnosed during labour in the Prince of Wales Hospital, Hong Kong, from July to August 1984, were analysed. The incidence was 21.4% of deliveries. These patients were compared to a group of non-meconium patients (349 cases) in demographic and obstetric aspects. Patients in low social class and patients with antenatal and medical complications did not have a higher incidence of meconium staining of amniotic fluid. However, a history of previous spontaneous or induced abortion was significantly more common in the meconium group. The labour performance of these patients and the perinatal outcome are discussed. PMID- 3863602 TI - The concept of stress. AB - Any notion or concept of stress should fulfil the following requirements. First, the definition should be readily communicable both to professionals and the community at large. Second, the concept should be readily converted into constructs which are suitable for research. In this latter regard it is easier to present and discuss a stress model. This model differentiates a number of factors which, although interdependent, are conceptually distinct. By adequately discriminating between these factors, operational criteria may be defined and a systematic assessment of the effects of stress will be facilitated. A model is thus presented which describes the stress process. PMID- 3863603 TI - The sick child's predicament. AB - There is widespread criticism of medicine which contrasts with its manifest success in biotechnology. Medicine's failure to convince stems partly from the fact that its successful biotechnology distracts it from the mundane task of responding appropriately to components of commonplace sicknesses which do not stem from disease (things) or illness (symptoms) but from predicaments. Predicaments are painful social situations or circumstances, complex, unstable, morally charged and varying in their import in time and place, which are readily discernible from a good history. Predicaments are distinguished from environmental agents by being an aspect of social organisation rather than structures. Dangerous and excruciating predicaments are described as well as the predicaments of being sick, and being in hospital. Child psychiatrists are often presented with problems where diagnosis of disease or illness in the child is inappropriate and resolution of its predicament alleviates the distress that had been presented in the language of sickness. The model is capable of broader application in psychiatry and medicine. Doctors should be more concerned to know about the context and background of their patients' sickness, as patients give this information very freely if asked. If patients' complaints are misunderstood then medical responses, made in good faith, may be seen as dangerous intrusions leading to a loss of trust, anger, and litigiousness. PMID- 3863604 TI - The music of psychiatry. AB - The author argues that the practice of psychiatry is impeded by a central paradox. On the one hand, psychiatry cannot develop unless the methods of science are used to unravel its problems. On the other, a significant part of what has been advanced as science is of little value and has done no more than divert attention from the important non-scientific aspects of psychiatric practice. Empathetic and perceptive practice is central for good psychiatry; there is no reason to believe that scientific method alone--good or bad--will lead to its achievement. PMID- 3863605 TI - A survey of child psychiatry outpatients. 1. Clinical and demographic characteristics. AB - This paper describes clinical and demographic characteristics of 664 children who attended outpatient child psychiatry clinics in Perth, Western Australia, over a one-year period. All social classes were represented; parents were the most common source of referral and typically the child had been assessed or treated for emotional or behavioural problems by other agencies previously. Referrals from the juvenile justice system were uncommon. The accessibility of clinics to the child population was found to have a significant effect on the rate of referral. Only 10% of the sample received conduct disorder diagnoses, whereas 16.5% had mixed disorders of conduct and emotion, and 42% had emotional disorders. Environmental circumstances, particularly recent marital break-up, family discord and recent experience of loss, were contributing factors to the child's clinical presentation in a large proportion of cases. PMID- 3863606 TI - The diagnostic distribution of dexamethasone non-suppressors. AB - Baseline serum cortisols and DSTs were performed on 100 psychiatric inpatients. The rates of non-suppression in selected DSM III diagnostic categories were calculated and the results discussed in the context of recent literature. It was concluded that test specificity may have been frequently overestimated. The suggestion is made that DST non-suppression may have non-specific and relative vector qualities, and thus be of little diagnostic use. PMID- 3863607 TI - The psychotherapeutic frame. PMID- 3863609 TI - A case of cerebral systemic lupus erythematosus treated with methylprednisolone pulse therapy. AB - A case of cerebral systemic lupus erythematosus is presented. This was characterised by a combination of organic, persecutory and atypical hypomanic features. After a very stormy course on oral steroids, treatment with intravenous methylprednisolone pulse therapy was begun. Subsequently the patient experienced a prolonged remission. This outcome supports the value of such therapy in cerebral systemic lupus erythematosus. PMID- 3863608 TI - Suicide in association with psychiatric hospitalisation. AB - A review of 46 subjects who suicided after having contact with a psychiatric hospital is presented. There were 33 men and 11 women, both with a mean age of 37 years. In comparison with a control group, those who suicided had a greater number of hospital admissions, a greater length of hospitalisation, were more often unemployed, had a history of more previous suicide attempts, more often received the diagnosis of schizophrenia or manic depressive illness (depressed phase), were more often overly depressed at their last contact, and were more often prescribed neuroleptic medications. Although these differences emerged, suicide is an infrequent event, and these factors lack specificity in prediction. The important association of psychiatric illness with subsequent suicide is noted. PMID- 3863610 TI - Transsexual sisters. AB - The first documented case of sisters with transsexualism is reported. Given the low incidence of female transsexualism this is a most unlikely event and suggests that familial factors may be of aetological importance. PMID- 3863611 TI - Cultural explanation of a 'psychosis' in a Chinese woman living in Australia. AB - This case report concerns a Malaysian-born Chinese woman living in the outback of Australia who was diagnosed as 'psychotic' and who recovered without drug treatment. A knowledge of her cultural background threw doubt on the assumption that her complaints were psychotic. The case shows the need to adopt cultural sensitivity in the practice of psychiatry. PMID- 3863612 TI - Cost-containment of medical care. PMID- 3863614 TI - Testing for memory disorder. PMID- 3863613 TI - Alprazolam as an antidepressant. PMID- 3863615 TI - Hospital versus community treatment. PMID- 3863617 TI - The S-sulfate formation from 4-nitrobenzyl mercaptan in rat liver cytosol. AB - 4-Nitrobenzyl mercaptan (NBM) was enzymatically transformed at pH 6.0 into its S sulfate in rat liver cytosol fortified with 3'-phosphoadenosine 5' phosphosulfate. At pH 7.4, the S-sulfate was not detected from the incubation mixture. 4-Nitrobenzyl alcohol was also transformed under the same incubation conditions into the corresponding O-sulfate at a higher rate at pH 6.0 than at pH 7.4. Under the incubation conditions used, NBM S-sulfate reacted with the substrate NBM at a significant rate to afford 4-nitrobenzyl disulfide. The disulfide formation from NBM and the S-sulfate occurred more readily at pH 7.4 than at pH 6.0, so that biologically formed NBM S-sulfate was strongly suggested not to remain unchanged in the incubation mixture at pH 7.4. PMID- 3863616 TI - Specificity of activated human protein C. AB - Peptide p-nitroanilide substrates and peptidylchloromethane inhibitors were used to examine the specificity of activated human Protein C. Substrates with arginine in the P1 position had the highest activity. The best substrates and inhibitors, as judged by the second-order rate constant for their interaction with the enzyme, had an apolar residue in the P2 position. In contrast with thrombin [Kettner & Shaw (1981) Methods Enzymol. 80, 826-842], activated Protein C was able to accommodate large hydrophobic residues such as phenylalanine and leucine in the P2 position. In the P3 position, the enzyme preferred an apolar D-amino acid residue. The results of the present study have also indicated a suitable substrate and inhibitor to be used in the assay of functional protein C and of thrombomodulin. PMID- 3863618 TI - Cellular uptake and localization of fluorescent derivatives of phorbol ester tumor promoters. AB - The synthetic fluorescent derivatives of 12-O-tetradecanoylphorbol-13-acetate (TPA), dansyl-TPA, dansyl-TPA-20-acetate and dansyl-TPA-13-desacetate, have ID50 values in the [3H]PDBu binding assay of 2nM, 30nM and 1000nM respectively; the ID50 value of TPA is 4nM. Dansyl-TPA is also equipotent with TPA as an activator of protein kinase C(PKC) producing half maximum stimulation at 2nM. Dansyl-TPA-13 desacetate is almost as potent as dansyl-TPA, while dansyl-TPA-20-acetate is completely inactive as an activator of PKC. The cellular uptake of these fluorescent TPA derivatives tends to parallel their activity in the [3H]PDBu binding assay. Treatment of C3H 10T1/2 cells with 100nM dansyl-TPA results in intense fluorescence of the entire cytoplasm, while the nucleus is virtually devoid of fluorescence. The uptake of fluorescence is quenched by an excess of TPA. Thus, dansyl-TPA rapidly enters cells and binds to specific sites distributed throughout the cytoplasm. Presumably these sites reflect the cellular localization of phorbol ester receptors and protein kinase C. PMID- 3863619 TI - Cilastatin (MK 0791) is a potent and specific inhibitor of the renal leukotriene D4-dipeptidase. AB - The metabolism of leukotriene D4 to leukotriene E4 by a dipeptidase of kidney tissue is strongly inhibited by cilastatin (MK 0791) a known renal dehydropeptidase-I inhibitor. The comparison with similar enzyme activities from other tissues (liver, lung, serum, polymorphonuclear granulocytes) revealed a high specificity of cilastatin for the kidney enzyme which was found to be associated with the microsomal fraction. The lowest detectable inhibitory concentration of cilastatin within renal tissue was 8 X 10(-8)M. PMID- 3863620 TI - Mitoxantrone and bisantrene inhibition of platelet aggregation and prostaglandin E2 production in vitro. PMID- 3863621 TI - [Effect of the molecular structure of anthracycline compounds on their intercalation into DNA]. AB - Kinetics of interaction of rubomycin, carminomycin, and their C9-analogues with deoxyribonucleic acid have been studied by the stop - flow method. Possible reasons of nonexponentiality of the kinetic curves are discussed. The rate constants of direct and reverse intercalation of the drugs between DNA base pairs were determined and relatively small differences found for various drugs. These data and of equilibrium binding studies of interaction of the antibiotics and their analogs with DNA led to conclusion that C9-modification of anthracyclines has little effect on the binding process. That was confirmed by quantum-mechanic calculations of potential energy of interaction between various anthracycline aglicones and DNA base-pairs. PMID- 3863622 TI - Evaluation of timefurone, a new anti-atherosclerotic drug, for its effects on lipoprotein cholesterol in male cynomolgus monkeys fed an atherogenic diet for 18 months. AB - Forty male cynomolgus monkeys were fed a nutritionally complete diet containing butter and 0.5% cholesterol for 18 months to ensure development of atherosclerosis. Timefurone was administered daily at 10 mg/kg/day. Lipoprotein cholesterol parameters were measured every 4 weeks and clinical chemistries were done at approximately 8-week intervals. Low density lipoprotein cholesterol [LDL C] was significantly reduced 24-45% at all time periods and total-C was lowered 17-23% at weeks 12, 16, and 24-40 in the timefurone group. Very low density lipoprotein cholesterol [VLDL-C] was increased 68-156% from weeks 40-78 and triglycerides [TG] were significantly elevated 52-220% on weeks 4-16, 24, 28, and 36-78 by timefurone. Timefurone caused small but significant changes in several clinical chemistry parameters including: creatinine, total bilirubin, albumin, glucose, serum glutamic-oxalacetic transaminase, and serum glutamic-pyruvic transaminase during the test. Significant reductions in arterial cholesterol were observed in thoracic aorta (-24%) and carotid arteries (-29%) in treated monkeys when compared to placebo. Arterial cholesterol in treated monkeys was positively correlated to LDL-C (R = 0.54, p less than or equal to 0.05). Timefurone, therefore, appears to have a significant beneficial effect against the development of atherosclerosis in cholesterol-fed male monkeys and possesses excellent potential for clinical experimentation. PMID- 3863623 TI - Evaluation of timefurone, a new anti-atherosclerotic drug, for its effects on lipoprotein cholesterol in male SEA Japanese quail and rats. AB - Timefurone was evaluated in several animal models for cholesterol-lowering and anti-atherosclerotic activity. In normal male rats, a dose-response study with timefurone (3, 10, 30, 50 and 100 mg/kg/day) was conducted for 7 days. Significant activity was observed only at 50 and 100 mg/kg/day, where very low and low density lipoprotein cholesterol [(VLDL + LDL)-C] and total-C levels were reduced (mean 27 and 20%). High density lipoprotein cholesterol (HDL-C) was lowered 24% by the high timefurone dose. Timefurone (10, 20, 50 and 100 mg/kg/day in the diet) was then examined in normocholesterolemic SEA japanese quail. beta lipoprotein cholesterol (VLDL + LDL)-C was reduced at all doses (mean 58%), while alpha-lipoprotein cholesterol (HDL-C) was elevated by all doses of timefurone (mean 45%). Male weanling rats made moderately hypercholesterolemic represented a 3rd phase of timefurone (2.5, 5, 10, 20, 50, 100 mg/kg/day) testing. After 4 days of drug treatment, marked hypocholesterolemic activity was observed for (VLDL + LDL)-C (mean decrease 49%) and total-C (mean 33%). HDL-C levels were increased with 10 and 100 mg/kg/day doses. Timefurone (25 and 100 mg/kg/day in the diet) also caused a significant reduction in atherosclerotic development in hypercholesterolemic SEA japanese quail. Atherosclerotic involvement (determined by visual assessment of plaque), arterial weight, and arterial cholesterol (total and mg/g artery) were clearly lowered by both doses of timefurone. There was no evidence of significant drug toxicity in any of these experiments. On the basis of these data, timefurone has excellent therapeutic potential and additional study of the drug's hypocholesterolemic and anti-atherosclerotic properties appears warranted. PMID- 3863624 TI - Preinduction cervical priming with PGE2 intracervical gel. AB - A prospective, randomized, controlled clinical trial was conducted to evaluate the safety and efficacy of a single, 0.5-mg dose of prostaglandin E2 gel in a shelf-stable triacetin base administered intracervically in patients with an unfavorable cervix (Bishop score less than or equal to 4) 12 hours prior to oxytocin-induction of labor. forty-eight evaluable patients were enrolled, 25 in the PGE2 group and 23 in the control group. PGE2 gel treatment resulted in a significant improvement in the mean Bishop score compared to control (3.14 versus 0.70, P less than .00005). Sixty-four percent of the patients treated with PGE2 had regular uterine contractions during the 12-hour preinduction period beginning 2.18 +/- 2.0 hours after gel insertion, compared to 9% in the control group, P = .0001. Moreover, 12% (3/25) of the patients receiving PGE2 progressed into active labor and delivered during the preinduction period. The duration of oxytocin infusion required for the induction or augmentation of labor was significantly shorter for patients who received intracervical PGE2 gel compared to the control group (13.1 +/- 8.1 versus 19.0 +/- 8.7, P less than .05). However, there was no significant difference in the incidence of cesarean section between the two study groups (40 and 22% in the PGE2 and control groups, respectively). No episodes of uterine hypertonus or hyperstimulation or gastrointestinal side effects occurred as a result of PGE2 gel treatment.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863625 TI - [Adenocarcinoma of the gingiva]. PMID- 3863626 TI - [Clinical study of acquired white lesions of the oral mucosa and their relation to cancer (I)]. PMID- 3863627 TI - [The laser in the medicine of tomorrow]. PMID- 3863628 TI - Acute colonic pseudo-obstruction (Ogilvie's syndrome): a case report showing the benefit of colonoscopy. PMID- 3863629 TI - Mucocutaneous lymphnode syndrome or Kawasaki disease. PMID- 3863630 TI - [Angiocardiographic diagnosis. Aorto-pulmonary window]. PMID- 3863631 TI - Electrocardiogram of the month. Managing a patient with an acute myocardial infarction (AMI). PMID- 3863632 TI - Osteoporosis. NIH Consensus Development. PMID- 3863633 TI - A review of the symposium "Diet and Behavior--A Multidisciplinary Evaluation". PMID- 3863634 TI - [Psychological profile of the patients in the hemodialysis unit of the Rio Piedras University Hospital]. PMID- 3863635 TI - [Diagnostic angiocardiography: tetralogy of Fallot]. PMID- 3863636 TI - Electrocardiogram of the month: Trilogy of Fallot. PMID- 3863637 TI - Echocardiography cases. Atrial septal defects. PMID- 3863638 TI - Abnormal bone formation induced by implantation of osteosarcoma-derived bone inducing substance in the X-linked hypophosphatemic mouse. AB - The X-linked hypophosphatemic mouse (Hyp) has been proposed as a model for the human familial hypophosphatemia (the most common form of vitamin D-resistant rickets). An osteosarcoma-derived bone-inducing substance was subcutaneously implanted into the Hyp mouse. The implant was consistently replaced by cartilage tissue at 2 weeks after implantation. The cartilage matrix seemed to be normal, according to the histological examination, and 35sulphur (35S) uptake was also normal. Up to 4 weeks after implantation the cartilage matrix was completely replaced by unmineralized bone matrix and hematopoietic bone marrow. Osteoid tissue arising from the implantation of bone inducing substance in the Hyp mouse showed no radiologic or histologic sign of calcification. These findings suggest that the abnormalities of endochondral ossification in the Hyp mouse might be characterized by the failure of mineralization in cartilage and bone matrix. Analysis of the effects of bone-inducing substance on the Hyp mouse may help to give greater insight into the mechanism and treatment of human familial hypophosphatemia. PMID- 3863639 TI - 'Assessment and clinical management of early caries of young adults'. PMID- 3863640 TI - 'Functional analysis of the gag reflex'. PMID- 3863641 TI - 'Medical and physical management of facial muscle and joint pain'. PMID- 3863642 TI - Local anaesthesia in dental practice. I. A clinical study of a self-aspirating system. PMID- 3863643 TI - Distribution of APF gel on tooth surfaces. PMID- 3863644 TI - Intrusion of an extrusion: case report of an innovative treatment alternative. PMID- 3863645 TI - The mercury debate. PMID- 3863646 TI - 'The boiling of instruments in general dental practice: a misnomer for sterilisation'. PMID- 3863647 TI - 'Inner city Britain: a challenge for the dental profession'. PMID- 3863648 TI - Advertising and dentists. PMID- 3863649 TI - 'Who should be immunised against hepatitis B?'. PMID- 3863650 TI - Medical and physical management of facial muscle and joint pain. PMID- 3863651 TI - Orthodontic study models. PMID- 3863652 TI - Prescribing analgesics. PMID- 3863653 TI - Comparison of the abrasive wear in vitro of a number of visible-light-cured composite resins. PMID- 3863654 TI - Dental attendance of elderly people in East Anglia. PMID- 3863656 TI - 'Local anaesthesia in dental practice'. PMID- 3863655 TI - Frontier town dentistry. PMID- 3863657 TI - Intramuscular penicillin and epilepsy. PMID- 3863658 TI - Teething troubles. PMID- 3863659 TI - 'Destructive forms of periodontal disease in adolescents and young adults'. PMID- 3863660 TI - A toothbrush for patients with impaired manual dexterity. PMID- 3863661 TI - A parotid region foreign body. PMID- 3863662 TI - Nitrous oxide in the surgery: pollution and scavenging. Some clinical experiences. PMID- 3863663 TI - Mercury vapour levels in a dental hospital environment. PMID- 3863664 TI - The (4;11) translocation in acute leukaemia of childhood: the importance of additional chromosomal aberrations. AB - Case reports of four girls and one boy with acute lymphoblastic leukaemia (ALL) or acute myeloid leukaemia (AML) and t(4;11) are presented. The incidence of t(4;11) ascertained at diagnosis in ALL was 2.6% and in AML 5.3%. Four of the children were under 2 years and one was 11 years at diagnosis. Leucocyte counts above 71 X 10(9)/l and liver, spleen and node enlargement were found in all cases. Blasts of the four cases tested at diagnosis were negative to the c-ALL antigen and either TdT+ (ALL) or TdT- (AML M1). Maximum survival was less than 8 months. Additional chromosomal change was found at diagnosis in two cases and in relapse in a third. In the case of AML t(4;11) (q21;p15) was present as a second translocation. Additional numerical changes, in these and other reported cases, included + 6, commonly found in ALL, +8, +19, more often reported in AML. It is suggested that additional chromosomal changes in these cases support cytochemical and surface marker evidence that t(4;11) has a pluripotent target cell, similar to that of the Philadelphia translocation. PMID- 3863665 TI - Phenotypic and karyotypic properties of hyperdiploid acute lymphoblastic leukaemia of childhood. AB - The DNA/cell content was measured by flow cytometry in samples obtained from 98 unselected children with acute lymphocytic leukaemia (ALL) at diagnosis. The frequency of anomalies in modal DNA content was compared to that encountered in acute childhood non-lymphocytic leukaemia (ANLL) and disseminated non-Hodgkin's lymphoma (NHL). In ALL the most frequent (35%) aberration in DNA content was an increase by 20% relative to the modal value of normal white blood cells. This subcategory, referred to as hyperdiploid ALL (HD-ALL), was characterized by a close association with the expression of the c-ALL surface marker (20/20 patients) and characteristic numerical chromosome changes, including tri- or tetrasomy of chromosome 21. Moreover, patients with hyperdiploid ALL had a much lower peripheral leucocyte count (P = 0.001) than those with diploid disease and a varying proportion of their leukaemic cells existed in the peripheral blood as morphologically normal lymphocytes expressing the c-ALL antigen. Within the standard risk category, patients with HD-ALL had a longer disease-free survival than those with diploid disease (P = 0.058). It is concluded that routine analysis by flow cytometry can conveniently and consistently detect ALL patients with hyperdiploid chromosome numbers. Hyperdiploid ALL constitutes a fairly large subtype of childhood ALL with specific biological and karyotypic properties, possibly associated with favourable prognosis. PMID- 3863666 TI - A hereditary abnormal c-fms proto-oncogene in a patient with acute lymphocytic leukaemia and congenital hypothyroidism. AB - A patient with congenital hypothyroidism and acute lymphocytic leukaemia was found to be homozygous for a 0.4 kbp deletion in the c-fms proto-oncogene. This was established by studying DNA from the patient's leukaemic cells, from cultured skin fibroblasts of the patient and from normal white blood cells of both parents. The uncertain relevance of this finding to the condition of the patient is discussed. PMID- 3863667 TI - Myelodysplastic syndromes: a study of 101 cases according to the FAB classification. AB - The myelodysplastic syndromes (MDS) are a group of closely related disorders characterized by chronic cytopenias with cellular marrow, poor prognosis and refractoriness to treatment. We studied 101 consecutive cases of MDS diagnosed over a 7-year period. Peripheral blood (PB) and bone marrow (BM) samples were reviewed and classified according to the proposals of the French-American-British (FAB) cooperative group for MDS. The combined analysis of the initial laboratory features and qualitative haematological abnormalities readily allowed the distinction between the different subgroups. Thirty-two of 79 cases (40.5%) evolved towards other diseases, frequently acute leukaemia (24/79, 30%), or transformed into other MDS (7/79, 9%). In five cases, initially classified as refractory anaemia (RA) or refractory anaemia with ring sideroblasts (RAS), a transitory change to another type of MDS--two chronic myelomonocytic leukaemias (CMML), two refractory anaemias with excess of blasts (RAEB) and one refractory anaemia with excess of blasts 'in transformation' (RAEB-t)--was observed before the evolution towards acute leukaemia. This provides a new link between all these syndromes and increases the number of transitions to other MDS. Overall prognosis was very poor, with differences between subgroups. RA had the best prognosis whereas RAEB-t had the worst one. This study shows that the FAB classification is readily usable and defines well-characterized subgroups of MDS, although there are frequent transitional forms, and as the natural history of the MDS unfolds they may convert into another. The actual poor prognosis and the frequent evolution towards acute leukaemia makes necessary to investigate new methods of treatment for these disorders. PMID- 3863668 TI - Increased growth and collagen synthesis of bone marrow fibroblasts from patients with chronic myelocytic leukaemia. AB - Growth and collagen synthesis were measured in human bone marrow fibroblasts derived from patients with chronic myelocytic leukaemia (CML) and normal individuals. The 3H-thymidine uptake, growth rate and collagen synthesis of fibroblasts from patients with CML were significantly greater than those from normal subjects. Thus, there is increased proliferation and collagen synthesis of fibroblasts in patients with CML. These findings show that CML fibroblasts may display a greater sensitivity to stimulator contained in the fetal calf serum used for the cultures, and they are relevant to the myelofibrosis by bone marrow fibroblasts in this disease. PMID- 3863669 TI - The value of the monoclonal antibody (cancer antigen 125) in serial monitoring of ovarian cancer: a comparison with circulating immune complexes. AB - The use of circulating immune complexes and a commercial monoclonal antibody to ovarian cancer (CA 125 kit) in monitoring progress in patients with ovarian cancer has been assessed. While changes in immune complexes were apparent in some patients with active progression of disease, the marked change in values and linear trend make the use of CA 125 a useful clinical marker. PMID- 3863670 TI - Lactation in placental steroid sulphatase deficiency. PMID- 3863672 TI - The reduction of the dose to patients during lateral cephalometric radiography. Report of a Joint Working Party of the British Society for the Study of Orthodontics and the British Society of Dental and Maxillofacial Radiology. PMID- 3863671 TI - Future manpower requirements for orthodontics undertaken in the General Dental Service. AB - The fall in the number of births in England and Wales which took place between 1964 and 1977 is beginning to have an effect on the present-day demand for orthodontic treatment. Using the best available data a mathematical model has been used to predict the likely demand for orthodontic treatment in the General Dental Services of England and Wales from now until 2008. This suggests that there is likely to be a sharp decline in the number of new orthodontic patients presenting for treatment at practices limited to orthodontics during the next 5 years. The recent expansion in the number of places available for postgraduate study of orthodontics makes it extremely unlikely that the position will improve significantly thereafter. There can be little doubt that we are now producing too many orthodontic specialists even allowing for the increase in manpower which might be required to satisfy a future demand for higher standards of treatment. PMID- 3863673 TI - Attitudes to orthodontic treatment. AB - A survey of the attitudes of patients and parents to active orthodontic treatment was undertaken at two centres. Questionnaires were distributed which enquired about pre-treatment appearance, reactions to the proposed treatment, experiences during treatment, perceived benefits of treatment, and values placed upon treatment. The results indicated that both patients and parents were satisfied with the treatment received, and pain from the appliance and its appearance were the main discouraging features. PMID- 3863674 TI - Maintaining an ideal tooth-gingiva relationship when exposing and aligning an impacted tooth. AB - An ideal tooth-gingiva relationship is important to aesthetics and function. Predictable methods of establishing an ideal tooth-gingiva relationship are described for exposing and aligning impacted teeth. PMID- 3863675 TI - Bimaxillary protrusion in the Caucasian: a cephalometric study of the morphological features. AB - The skeletal morphology of bimaxillary dental protrusion has been investigated in a comparative cephalometric study. Because this is considered a subset of Class I malocclusions, the null hypothesis is that there should be no significant skeletal differences between this group and a Class I control group. There were 30 Caucasians in each group with no bias for age and sex differences between them. Eighteen radiographic landmarks were identified from which 33 skeletal, dental and soft tissue parameters were computed. The bimaxillary group had an average interincisal angle of 115 degrees versus the controls 135 degrees, and showed the following morphological features which persisted over a 5-year growth period: A shorter posterior cranial base. A longer and more prognathic maxilla. Similar mandibular dimensions and prognathism. A mild Class II skeletal pattern. A smaller upper and posterior face height. Diverging facial planes. A procumbent soft tissue profile with a low lip line. These findings indicate that there is a distinctive difference between the underlying skeletal patterns found in the two groups. PMID- 3863676 TI - A laboratory investigation of orthodontic elastomeric chains. AB - The dimensions and force/extension characteristics of 13 commercially available orthodontic chain elastomeric materials are reported. The relationship between force and extension was not linear over the range investigated and there were two definite transition points in the curves. Over the first linear part of the curve the two-loop specimens had stiffness values from 0.9 to 1.6 N/mm. Stiffness fell as the number of loops increased so that four-loop chains produced 0.6-1.1 N/mm. One hundred per cent extension produced forces in the 4-5 N range for most specimens. It is suggested that an extension of between 50 and 70 per cent would provide the most satisfactory orthodontic force. PMID- 3863677 TI - A removable appliance for the preliminary vertical movement and subsequent buccal movement of palatally impacted canines. PMID- 3863678 TI - Megakaryoblastic micromegakaryocytic crisis in chronic myeloid leukemia. AB - Atypical megakaryoblasts (MKB) or megakaryocytes (MK) are occasionally present in the peripheral blood during the terminal development of chronic myeloid leukemia (CML). We report on a 49-year-old female suffering from Ph1 chromosome-positive CML with typical megakaryoblastic transformation in the peripheral blood and in the bone marrow. The small "blasts" were at the most only slightly larger and were occasionally even smaller than lymphocytes but showed megakaryoblastic or atypical megakaryocytic differentiation. The cytoplasmic cytochemical pattern of the atypical megakaryocytic cells was identical to that of large atypical thrombocytes. Platelet peroxidase was detected upon electron-microscopic (EM) examination. Immunologic characterization disclosed the presence of MK-specific antigens. When cultured in vitro on agar, the blasts transformed spontaneously into large mature MK, exhibiting characteristic cytochemical and immunological patterns. Cytogenetic examination of peripheral blood showed severe abnormalities. The patient did not respond to therapy and died 3 months after manifestation of the blast crisis. PMID- 3863679 TI - Remission with high erythrocyte sedimentation rates in acute myeloid leukemia is of short duration. PMID- 3863680 TI - Irrational attitudes toward addicts and narcotics. PMID- 3863681 TI - Under-prescription/over-prescription: narcotic as metaphor. PMID- 3863683 TI - Dental health habits among pre-school nonparticipants in public dental care. PMID- 3863682 TI - Effect of nonsteroidal anti-inflammatory drugs on glycogenolysis in isolated hepatocytes. AB - E-series prostaglandins have previously been demonstrated to inhibit hormone stimulated glycogenolysis when added to isolated hepatocytes of the rat. In the present study, the effect of nonsteroidal anti-inflammatory drugs, which inhibit cyclo-oxygenase activity, on glycogenolysis was examined in the hepatocyte model. Ibuprofen (80 microM), indomethacin (50 microM) and meclofenamate (60 microM) all increased rates of glycogenolysis when added under basal conditions. In contrast, piroxicam (50 microM) had no effect on glycogenolysis in the hepatocyte system. Concentrations of ibuprofen below 80 microM did not significantly increase rates of glycogenolysis. Ibuprofen (80 microM) had no effect on glycogenolysis in the presence of 10(-5)M adrenaline or 5 X 10(-7)M glucagon, but did increase glycogenolytic rates in the presence of 5 X 10(-8)M glucagon. Ibuprofen stimulated glycogenolysis was inhibited by addition of prostaglandin E2 (PGE2). Under conditions where glucagon-stimulated glycogenolysis was inhibited by exogenous PGE2, addition of ibuprofen (80 microM) increased the rate of glycogenolysis. Ibuprofen had no effect on basal or glucagon-stimulated hepatocyte adenylate cyclase activity. In conclusion, these results demonstrate that nonsteroidal anti-inflammatory drugs which are carboxylic acids can increase the rate of glycogenolysis in isolated hepatocytes. The high concentrations of drug required to stimulate glycogenolysis, the lack of effect of piroxicam, and the demonstration of stimulation by ibuprofen in the presence of exogenous PGE2 all suggest that the stimulation of glycogenolysis by ibuprofen, indomethacin and meclofenamate is independent of cyclooxygenase inhibition. These observations are consistent with reports that carboxylic acid nonsteroidal anti-inflammatory drugs can interfere with hepatic intracellular calcium handling. PMID- 3863684 TI - Dental health attitudes, behaviour and knowledge in 14-year-old Iraqi children. PMID- 3863685 TI - The analysis of inter-dentist agreement in caries prevalence studies. PMID- 3863686 TI - The influence of orthodontic extractions on the caries indices in schoolchildren in the United Kingdom. PMID- 3863687 TI - Preliminary report on a restricted orthodontic screening programme in southern Derbyshire. PMID- 3863688 TI - Results and issues arising from an evaluation of community dental health education: the case of the 'Good Teeth Programme'. PMID- 3863689 TI - A reassessment of Lothian Health Board's dental health education programme for primary school children. PMID- 3863690 TI - Tourniquet infusion chemotherapy for osseous malignant lesions. AB - Two patients with osseous malignant lesions were treated with the tourniquet infusion method. The first patient, with two metastatic lesions in the left femur resulting from a renal adenocarcinoma, had three courses of intra-arterial Adriamycin. Biopsies of these lesions showed that the distal lesion, which was perfused during each treatment, was histologically negative, whereas the proximal lesion, which was not perfused because of the position of the catheter, contained the viable tumor. The second patient, a 12-year-old girl with osteogenic sarcoma of the proximal portion of the right tibia, had three courses of intra-arterial chemotherapy with Adriamycin and cisplatinum, and then underwent open biopsy, which was histologically negative. Another open biopsy six months later was also histologically negative. She has normal use of her extremity and, at eleven months since the initiation of treatment, she remains disease free. The evaluation of the tourniquet infusion technique in greater numbers of patients with bone tumors under carefully controlled conditions, appears warranted. PMID- 3863691 TI - Values of CA 19-9 in the serum, pure pancreatic juice, and aspirated pancreatic material in the diagnosis of malignant pancreatic tumor. AB - The diagnostic accuracy of the measurement of CA 19-9 in the serum, pure pancreatic juice, and aspirated pancreatic fluid in the diagnosis of pancreatic tumors was assessed in 32 patients with malignant pancreatic tumors and 19 patients with pancreatitis. Pure pancreatic juice was collected from the pancreatic duct by endoscopic cannulation with a duodenofiberscope after intravenous administration of secretin. Pancreatic material was obtained by percutaneous fine-needle aspiration biopsy under ultrasonic guidance. Abnormally high CA 19-9 levels in the serum were significantly more frequent in patients with malignant pancreatic tumors than in those with pancreatitis: they were elevated in 71.9% of the patients with pancreatic tumors. High CA 19-9 levels were found primarily in patients with a tumor of the head of the pancreas, in those with a tumor greater than 3 cm in its greatest diameter, and in those with an unresectable cancer. Only 57.1% of seven patients with a tumor of less than 3 cm in its greatest diameter showed an increase in CA 19-9 level. The CA 19-9 levels in pure pancreatic juice were significantly higher in patients with pancreatic tumors than in patients with pancreatitis without pancreatic stone. However, it was not useful for differentiating pancreatic tumors from pancreatitis with pancreatolithiasis. The CA 19-9 level in pancreatic materials obtained by aspiration biopsy was significantly higher in patients with malignant pancreatic tumors than in those with pancreatitis. Eight patients (80%) with pancreatic tumors had values above 1000 U/ml, whereas all five patients with pancreatitis had values of less than 30 U/ml. Although CA 19-9 levels in pancreatic materials was useful only when cytologic examination did not provide any evidence of malignancy, the combination of the CA 19-9 assay and the cytologic study of specimens obtained by percutaneous fine-needle aspiration biopsy of the pancreas increased the diagnostic rate to 100%. PMID- 3863692 TI - Lymphomas in men at high risk for acquired immune deficiency syndrome (AIDS). A study of 21 cases. AB - An increased incidence of lymphoid neoplasias is associated with the states of immune deficiency, both congenital and acquired. Twenty-one cases of lymphoma in men at high risk for Acquired Immune Deficiency Syndrome (AIDS) were diagnosed in one community hospital in New York City within the last 2 years. The mean age of these patients was 39.6 years, 20 were homosexual, and 1 was an intravenous drug abuser. There were 3 Hodgkin's and 18 non-Hodgkin's lymphomas of various histologic types, but almost all of high-grade categories. The proportion of extranodal lymphomas, the involvement of the gastrointestinal tract, central nervous system, bone marrow, and myocardium were significantly higher than in the lymphomas of the general population. The phenotypes were B-cell and non-B-non-T cell types without any T-cell lymphomas. All patients had reversed helper suppressor T-cell ratios and all those tested had circulating HTLV-III antibodies. Seven patients have had previous lymph node biopsies performed, showing the lesions of AIDS-related lymphadenopathies that often were directly associated with lymphoma. A variety of severe opportunistic infections and Kaposi's sarcoma affected these patients. All lymphomas in this group were highly aggressive, involved multiple organs, and responded poorly to treatment, resulting in early deaths. PMID- 3863693 TI - Osteogenic sarcoma in pregnant women. Prognosis, therapeutic implications, and literature review. AB - This study of 18 pregnant women with concomitant osteogenic sarcoma of bone analyzes the important assertion whether this sarcoma and pregnancy have an adverse interaction. For comparison we matched the pregnant osteogenic sarcoma patients with nonpregnant women with the same skeletal tumor location and histologic appearance as well as similar age distribution. There was no worsening of prognosis of pregnant osteogenic sarcoma patients, and neither the pregnancy nor the disease appeared to act adversely toward the other. The 18 pregnant women with osteogenic sarcoma fared no better (nor worse) than the nonpregnant women with osteogenic sarcoma. PMID- 3863694 TI - Two cases of acute myeloblastic leukemia (M2 type) with karyotypes 45X, X,t(6;8)(q27;q22),inv(9) and 46,XY,t(8;21)(q22;q22),del(9)(q22). AB - Two patients with acute myelogenous leukemia (AML) are described. The first case is that of a patient with AML who had a low leukocyte alkaline phosphatase level associated with a variant (6;8)(q27;q22) translocation, coupled with loss of an X chromosome in bone marrow and unstimulated blood cells. The second case is that of an AML patient in whom the karyotype of the leukemic cells at the time of diagnosis was 46,XY,t(8;21)(q22;q22),del(9)(q22); at relapse, the patient acquired an additional chromosome #19. The lack of involvement of chromosome #21 in the first case, as well as the occurrence of an abnormality of chromosome #9, in addition to the t(8q-;21q+) in the second case are discussed with reference to the character of the possible specific chromosomal events in patients with type M2 AML. PMID- 3863695 TI - Near-triploid Ph-positive leukemia. AB - Tetraploid populations have been observed in various types of leukemia, but relatively few reports exist of triploid cell populations in acute or chronic leukemia. We report two cases of Ph-positive leukemia with a modal triploid cell population. Examination of peripheral blood from a 3-year-old boy with Ph positive acute lymphoblastic leukemia (ALL) and a 68-year-old male with Ph positive chronic myelocytic leukemia (CML) in blastic crisis revealed modal populations of 72 and 63 chromosomes, respectively. G-banding analysis of both cases revealed the following: karyotypic instability (no clonality), dominant trisomy, and the random association of the Ph chromosome with gains and losses of chromosomes involved in this translocation. The cytogenetic evidence obtained suggests that the triploid cell populations were not derived from a duplication of a hypodiploid cell population, but resulted from random loss of chromosomes from tetraploid cell populations derived from duplication of pseudodiploid cells. PMID- 3863696 TI - Translocations that highlight chromosomal regions of differentiated activity. AB - The frequent translocation of the c-myc oncogene into the immunoglobulin loci in tumors of B lymphocytes prompted us to ask whether or not disease-associated chromosomal translocations specific for other disorders in different cell types would also involve regions of the genome encoding important differentiation specific products made by these cells. We have studied the karyotypes of two patients with erythroleukemia and an established erythroleukemia cell line, K562 (late passages), and find translocations within the chromosomal regions to which the genes that encode alpha and beta globin have been assigned. Additionally, we have analyzed the karyotype of cloned B-lymphocytes, including both kappa and lambda producing cells, from a patient with ataxia telangiectasia (AT) and find a translocation between the regions encoding immunoglobulin (Ig) light and heavy chain genes whereas a different translocation not involving these regions is seen in T-lymphocytes from the same patient. These examples provide insight into the mechanism of chromosomal translocation in both cancerous and noncancerous conditions and lead to the speculation that genomic activity is a necessary factor in the generation of some chromosomal translocations. PMID- 3863697 TI - Translocation of c-abl to "masked" Ph in chronic myeloid leukemia. AB - In two patients with chronic myeloid leukemia (CML), the nature of the chromosomal rearrangement giving rise to "masked" Ph has been studied by in situ hybridization of human c-abl sequences. The c-abl probes hybridized to the 22q11 region of the "masked" Ph, demonstrating that translocation of sequences from 9q34 to the Ph did occur exactly as in standard Ph or in other types of variants previously studied. These results provide additional evidence for the occurrence of a constant molecular rearrangement in Ph-positive CML. PMID- 3863698 TI - Variant Ph translocations in chronic myeloid leukemia. AB - Variant translocations were found in eight of 142 consecutive patients with Ph positive, chronic myeloid leukemia encountered in our laboratory during the last decade. Two patients had simple, two-way variant translocations: t(17;22)(p13;q11) and t(16;22)(q24;q11). Both of these patients had an additional translocation involving chromosomes #9: t(7;9)(q22;q34) and t(9;17)(q34;q21), respectively. Complex variant translocations were found in four cases: t(2;9;22)(p23q12;q34;q11), t(3;9;22)(p21;q34;q11), t(9;12;22)(q34;q13;q11q13), and t(13;17;22)(p11;p11q21;q11). In two cases, the only discernable cytogenetic aberration was del(22)(q11). A review of the chromosomal breakpoints involved in this series and in 185 cases of variant Ph translocations previously reported in the literature reveals that a disproportionately large number of breakpoints are located in light-staining regions of G-banded chromosomes. Furthermore, the breakpoints in simple variant translocations are more often located in terminal chromosomal regions, whereas, the breakpoints in complex translocations typically affect nonterminal bands. No obvious correlation was detected between variant Ph translocation breakpoints and either fragile sites, oncogene locations, or consistent chromosome breakpoints in other malignancies. PMID- 3863699 TI - Mapping of amplified c-myb oncogene, sister chromatid exchanges, and karyotypic analysis of the COLO 205 colon carcinoma cell line. AB - We have studied molecular and chromosomal details of cytogenetic status in a human tumor cell line COLO 205 that shows a stable, approximately tenfold amplification of the c-myb oncogene. The amplified copies of c-myb reside in two marker chromosomes that may have evolved from chromosome #6 by complex chromosomal rearrangements. No homogeneously staining regions can be discerned at the site of c-myb amplification. We suggest that c-myb was amplified in situ in a chromosomal segment (6q22-24) that became a part of the marker chromosome, possibly through isochromosome formation followed by duplication, and without the extrachromosomal intermediate form of double minute chromosomes. There is an enhanced frequency of sister chromatid exchanges at the site of amplified c-myb. These results are discussed in the context of models for gene amplification and oncogene activation. PMID- 3863700 TI - Involvement of chromosomes 4, 11, and 17 in a case of myelodysplastic syndrome. AB - A case of myelodysplastic syndrome in a 68-year-old male in whose marrow cells two translocations were established, i.e., t(4;11)(q13;q23) and t(11;17)(p?:q11), as well as other karyotypic changes (-6,-18,15p+), is described. The relation and identity of the bands involved in the translocations affecting chromosomes #11 and #17 in leukemias in which these chromosomes are specifically affected, i.e., t(4;11) in acute myelomonocytic leukemia and t(15;17) in acute promyelocytic leukemia, are discussed in relation to the case described. PMID- 3863701 TI - Correlations between anthracycline resistance, drug accumulation and membrane glycoprotein patterns in solid tumors of mice. AB - Both impaired drug accumulation and appearance of a new membrane glycoprotein species (mol. wt. approx. 180,000) are often associated with high levels of drug induced resistance to a group of natural products which includes adriamycin (ADR) and daunorubicin (DNR). In this study, we examined solid murine mammary, pancreatic and colon tumors varying in degrees of inherent or (in vivo) induced adriamycin resistance. Neither impaired drug accumulation nor alterations in membrane glycoprotein patterns were correlated with drug resistance in these tumors. These results suggest that permeability and glycoprotein alterations may only be associated with very high degrees of drug resistance. PMID- 3863702 TI - Major role of hepatic sulfotransferase activity in the metabolic activation, DNA adduct formation, and carcinogenicity of 1'-hydroxy-2',3'-dehydroestragole in infant male C57BL/6J x C3H/HeJ F1 mice. AB - 1'-Hydroxy-2',3'-dehydroestragole is a synthetic acetylenic analogue of 1' hydroxyestragole, the proximate carcinogenic metabolite of the naturally occurring hepatocarcinogen estragole (1-allyl-4-methoxybenzene). This analogue is considerably more potent than 1'-hydroxyestragole as an hepatocarcinogen in mice. 1'-Acetoxy-2',3'-dehydroestragole reacted readily with deoxyguanosine or deoxyguanosine 5'-monophosphate at neutrality to form two adducts. Adduct I, isolated and characterized after dephosphorylation of the deoxyguanosine 5' monophosphate product, was a 1:1 mixture of two diastereomers of N2-(2',3' dehydroestragol-1'-yl)deoxyguanosine. Adduct II was shown to be N-7-(2',3' dehydroestragol-1'-yl)guanine. The reaction of deoxyadenosine with 1'-acetoxy 2',3'-dehydroestragole at neutrality produced Adducts III and IV. Adduct IV was characterized as N6-(2',3'-dehydroestragol-1'-yl)deoxyadenosine. Administration of [1'-3H]-1'-hydroxy-2',3'-dehydroestragole to male preweanling C57BL/6J x C3H/HeJ F1 (hereafter called B6C3F1) mice resulted in extensive covalent binding to hepatic DNA, RNA, and protein. On hydrolysis of the DNA to nucleosides, a single major adduct accounted for greater than 85% of the DNA-bound 3H. This adduct comigrated with Adduct I in two high performance liquid chromatography systems, had a pH partition profile identical to that of Adduct I, and was present as a mixture of diastereomers in a ratio of 2:1. The identity of the DNA adduct formed in vivo with Adduct I from the reaction of 1' acetoxydehydroestragole indicated that a reactive ester was a major metabolic precursor in vivo. There was no significant loss of Adduct I from the hepatic DNA by 21 days after a single injection of a carcinogenic dose of 1'-hydroxy-2',3' dehydroestragole. Adducts II, III, and IV were not detected in significant amounts in the hepatic DNA isolated by a phenol extraction method or by a more rapid hydroxylapatite method. Cytosolic sulfotransferase activity was demonstrated for 1-hydroxy-2',3'-dehydroestragole in mouse liver, and inhibition of this activity by greater than 95% was found on addition of 10 microM pentachlorophenol. The administration of pentachlorophenol (0.04 mumol/g body weight) 45 min prior to a single dose of 1'-hydroxy-2',3'-dehydroestragole (0.04 mumol/g body weight) in 12-day-old male B6C3F1 mice greatly inhibited (87-97%) the covalent binding of 1'-hydroxy-2',3'-dehydroestragole to hepatic macromolecules and the formation of hepatomas at 10 months.(ABSTRACT TRUNCATED AT 400 WORDS) PMID- 3863703 TI - Differential sensitivity of a mouse myeloid leukemia cell line and normal mouse bone marrow cells to X-ray-induced chromosome aberrations. AB - Cell line ML-1 was established from a myelogenous leukemia of an RFM mouse. The ML-1 cells and in vitro normal mouse bone marrow cells were analyzed to determine if there was a differential sensitivity to X-ray-induced chromosome aberrations in G1 cells and/or differences in postirradiation cell cycle progression. Cells identified as being in G1 at the time of irradiation by their staining pattern after replication in 5-bromodeoxyuridine were analyzed for all types of chromosomal aberrations following X-ray doses of 0.5, 1.0, 1.5, and 2.0 Gy. ML-1 cells showed a greater sensitivity to the induction of both chromosome-type aberrations (dicentrics and terminal deletions) and chromatid-type aberrations (exchanges and deletions) compared to normal mouse bone marrow cells, which only contained chromosome-type aberrations. The presence of chromatid-type aberrations in the ML-1 cells and not normal bone marrow cells suggested a differential progression through the cell cycle for the two cell types after irradiation. Mitotic index and flow cytometric analyses were performed and showed that both cell types have a delay in progression from G2 into mitosis, but only the normal mouse bone marrow cells have a delay in progression from G1 into S, as well as delayed progression through the S phase following X-irradiation. These results indicate that the ML-1 leukemia cells have an increased radiosensitivity. This may be due to a defect in their ability to respond to DNA damage as evidenced by their lack of a G1- and S-phase delay which allows normal cells an increased time to repair DNA damage before replication. These same characteristics have been observed in ataxia telangiectasia cells and may well represent a general feature of cells with increased radiosensitivity. PMID- 3863704 TI - Synergistic anticellular effect of a combination of beta-interferon and retinoic acid against U937 cells. AB - Both human beta-interferon (IFN-beta) and retinoic acid (RA) are able to induce the differentiation of the human histiocytic lymphoma cell line U937, but neither one alone can effectively eliminate the leukemic cells. When U937 cells are incubated with a combination of IFN-beta (200 units/ml) and RA (0.1-1.0 microM), extensive cell death can be observed as early as day 3 posttreatment, and IFN beta alone at a concentration as high as 10(4) units/ml is ineffective. These data suggest that there is a strong synergistic cell killing effect between IFN beta and RA against the U937 cells. This effect is so highly selective that similar enhancement has not been detected using a closely related cell line, HL 60, and RA enhances neither IFN-alpha nor IFN-gamma in the killing of U937 cells. The mechanism of such synergism is unknown in the present study, but it appears that cytostasis or promotion of differentiation alone cannot account for this phenomenon since neither activity is enhanced to any appreciable extent. PMID- 3863705 TI - Differential cellular retention of vincristine and vinblastine by cultured human promyelocytic leukemia HL-60/Cl cells: the basis of differential toxicity. AB - Differential toxicity of vincristine and vinblastine against cells of a cloned subline of human promyelocytic leukemia (HL-60/Cl) was dependent on exposure conditions. During continuous exposures of 48 h, vincristine and vinblastine were equitoxic with drug concentrations that inhibited proliferation rates by 50% of 7.6 and 8.1 nM, respectively. When cells were subjected to 4-h exposures and transferred to drug-free medium, the drug concentration of vinblastine that inhibited proliferation rates by 50% (1.1 microM) was significantly greater than that of vincristine (41 nM). Analysis by flow cytometry of the effects of equitoxic drug exposures on cell-cycle progression suggested that vincristine and vinblastine acted by the same mechanism (G2-M phase inhibition). [3H]Vincristine and [3H]vinblastine were bound to serum proteins in growth medium to the same extent (25%) over a wide range of concentrations, and the amounts of "free" extracellular drug did not decrease during prolonged exposures. Analysis by high performance liquid chromatography of extracts of cultures incubated with growth inhibitory concentrations of [3H]vincristine or [3H]vinblastine indicated little, if any, metabolism of either drug by cells or culture fluids; after 24 h, 85-95% of radioactivity was recovered from cells or growth medium as unchanged vincristine or vinblastine. At concentrations from 6 nM to 6 microM, vinblastine entered cells rapidly, reaching maximum levels within 0.5-2 h, and the relationship between maximal cell-associated drug and extracellular free vinblastine was linear. Although uptake of vincristine was slower than that of vinblastine, the cellular content of vincristine reached that of vinblastine during prolonged (12-24 h) exposures, and the amounts of cell-associated drug, relative to extracellular drug concentrations, indicated considerable "concentrative" accumulation (intra: extracellular ratios, greater than 100). When drug exposures were ended by transfer of cells to drug-free medium, vinblastine was released from cells more rapidly and to a greater extent than vincristine, independent of whether exposures were 4 or 24 h. Rates of uptake and release of vinblastine (50 nM) were unaffected by depletion of cellular adenosine triphosphate, suggesting that rapid release was not mediated by an energy dependent efflux system. PMID- 3863706 TI - Heterogeneity of [3H]phorbol 12,13-dibutyrate binding in primary mouse keratinocytes at different stages of maturation. AB - Mouse keratinocytes respond heterogeneously to phorbol esters with distinct subpopulations stimulated to proliferate or induced to differentiate. The maturation state of the epidermal cell at the time of exposure may determine its response. The binding of phorbol esters to primary mouse keratinocytes was studied under culture conditions selecting for proliferating cells or differentiating cells. [20-3H]-12-Deoxyphorbol 13-isobutyrate ([3H]-DPB) bound to both types of cells at one class of binding sites. The dissociation constant (Kd) for [3H]DPB in the proliferative cells [epidermal cells grown in Eagle's minimal essential medium containing 8% fetal calf serum (Chelex treated) and 0.05 mM CaCl2] was 69 nM and the binding at saturation (Bmax) was 1.3 pmol/mg of protein. The corresponding values in the differentiative cells (epidermal cells grown in Eagle's minimal essential medium containing 8% fetal calf serum and 1.2 mM CaCl2) were 96 nM and 1.5 pmol/mg of protein, respectively. In contrast to the results obtained with [3H]DPB, [20-3H]phorbol 12,13-dibutyrate ([3H]PDBU) bound to both cell types in a heterogeneous fashion. Analyzed by the Ligand Program with a two site model, the Kd values for the two binding sites in the cells grown in the medium containing 0.05 mM CaCl2 were 5.5 and 100 nM and the Bmax values were 0.9 and 1.7 pmol/mg of protein, respectively. The site for [3H]DPB binding seemed to correspond to the higher affinity [3H]PDBU binding site. The major difference in the cells grown in the medium containing 1.2 mM CaCl2 was an increase (approximately two-fold, depending on details of the analysis) in the Bmax of the lower affinity binding site with the other three parameters remaining similar. The state of epidermal differentiation thus appears to modulate the amount of the lower affinity binding sites for phorbol esters. Three Ca2+-resistant cell lines have been developed from carcinogen-treated primary keratinocytes. These cells are not tumorigenic and demonstrate characteristics consistent with their being initiated cells. In the medium containing 1.2 mM CaCl2, [3H]PDBU bound to these cells at one class of binding sites with affinities similar to that of the higher affinity sites for [3H]PDBU in cells grown in the medium containing either 0.05 or 1.2 mM CaCl2. PMID- 3863707 TI - Parabiotic transfer of cancer anorexia/cachexia in male rats. AB - To demonstrate that the anorexia and depletion of cachexia reverses on tumor removal, F344 rats underwent sarcoma resection when their food intake fell to 0 g/day. In survivors of surgery, reversal in food intake was apparent within 3 days postoperatively, followed after 2 days by gain in host weight. To detect whether the transmission of anorexia/cachexia in these tumor-bearing (TB) rats was via the circulation, four groups were studied: single non-tumor bearing (NTB); single TB; parabiotic NTB; and parabiotic TB. The measured blood exchange rate between parabiotic halves was 1.2-1.5%/min. No cachectic effect was detected in either half of the NTB parabionts. There was no evidence of sarcoma metastases in the tumor-free half of the parabiotic TB pair. All the rats associated with the presence of tumor showed cachectic effects but the degree and timing of effect varied among the three conditions, single TB, parabiotic TB half, and parabiotic tumor-free half. In all variables examined (fall in food intake, time of first fall in food intake, host weight loss, elevation of blood urea nitrogen) the severities were always in the same sequence: single TB greater than parabiotic TB half greater than parabiotic tumor-free half greater than NTB. In addition, the TB parabiotic pair had a significantly longer survival time and grew a significantly larger tumor than did the single TB animal. The parabiotic tumor had a slower initial growth rate and a slower deceleration rate than the singlet tumor. These results provide evidence for the humoral mediation of cancer associated cachexia. PMID- 3863708 TI - Mapping of transforming growth factor alpha gene on human chromosome 2 close to the breakpoint of the Burkitt's lymphoma t(2;8) variant translocation. AB - Transforming growth factors (TGFs) are defined as biologically active polypeptides which reversibly confer the transformed phenotype onto untransformed cultured cells. TGF-alpha shows sequence homology with epidermal growth factor and competes with epidermal growth factor for binding to the epidermal growth factor receptor, stimulating the phosphorylation of the receptor. TGF-alpha is secreted by many transformed cells and may be involved in embryonic development. A cloned human TGF-alpha gene was used to map the locus for the TGF-alpha precursor to the short arm of human chromosome 2, region 2p11----2p13, by Southern blotting techniques with DNA prepared from rodent X human somatic cell hybrids. These hybrids contained different subsets of human chromosomes and included a set with a translocation between human chromosomes 1 and 2 [t(1;2) (q32;q13)]. In situ hybridization of the TGF-alpha probe to normal human metaphase spreads confirmed these data and localized TGF-alpha more precisely to bands 2p11----2p13. Breakpoints in the variant Burkitt lymphoma translocation t(2;8) occur within these bands. Such a t(2;8) translocation could place TGF alpha next to c-myc in band 8q24. The possibility is raised that TGF-alpha might contribute to tumor progression in these cases of Burkitt's lymphoma. PMID- 3863709 TI - Influence of human alpha-interferon on four human osteosarcoma xenografts in nude mice. AB - Growth-inhibiting effects of human alpha-interferon (HuIFN-alpha) were investigated in four human osteosarcoma xenografts in nude mice. In addition to effects on growth, the HuIFN-alpha treatment was evaluated by histological examination and DNA flow cytometric analysis. Daily doses of 2 X 10(5) IU HuIFN alpha completely arrested the growth of two osteosarcoma xenografts and partially inhibited one, whereas 1 X 10(6) IU/day were necessary to arrest the growth of the fourth. Growth inhibition was reversible and tumor size independent. The histological appearance, including mitotic indices, and S-phase proportions were unchanged in three xenografts. The mechanism of the HuIFN-alpha-induced growth inhibition of these three xenografts was therefore not considered to be a direct antiproliferative effect, but rather due to increased cell loss and/or increased cell cycle time. The modal DNA value of one xenograft was changed from aneuploid to diploid during HuIFN-alpha treatment. Histologically, these xenografts were partly replaced by normal appearing bone and bone marrow. The S-phase proportion was also reduced in these xenografts, implying that HuIFN-alpha can also have a direct antiproliferative effect. PMID- 3863710 TI - Inhibition of murine erythroleukemia cell differentiation by 3-deazaadenosine. AB - Recent studies have demonstrated that 5'-methylthioadenosine, an inhibitor of S adenosylhomocysteine (AdoHcy) hydrolase, blocks induction of murine erythroleukemia cell (MEL) differentiation. The nucleoside analogue 3 deazaadenosine (c3Ado) is both an efficient substrate and a potent inhibitor of AdoHcy hydrolase. The present study was undertaken to determine whether c3Ado would similarly inhibit MEL differentiation. The results demonstrate that c3Ado inhibits induction of MEL differentiation by dimethyl sulfoxide, hexamethylene bisacetamide, butyric acid, and diazapam. c3Ado blocks the appearance of the differentiated MEL phenotype by inhibiting both MEL heme synthesis and transcription of alpha- and beta-globin RNA. The inhibitory effect of c3Ado on MEL differentiation is concentration dependent, reversible, and potentiated by L homocysteine thiolactone. Furthermore the AdoHcy/AdoMet ratio increases nearly 3.5-fold after 24 h of treatment with 50 microM c3Ado. In contrast, this c3Ado effect is not associated with polyamine depletion or cytostasis. These findings indicate that c3Ado blocks the induction of MEL differentiation at a transcriptional level and that this effect may be related to inhibition of AdoHcy hydrolase. PMID- 3863712 TI - Factors involved in quantitating induction of anchorage independence in diploid human fibroblasts by carcinogens. PMID- 3863711 TI - Isolation and characterization of a novel nucleoside, 7-beta-D ribofuranosylhypoxanthine, from the urine of a chronic myelogenous leukemia patient. AB - A novel nucleoside, in the amount of 400 micrograms, was isolated from a 24-h collection of urine of a chronic myelogenous leukemia patient. On the basis of ultraviolet, nuclear magnetic resonance, and mass spectrometry and chromatography, its structure was established to be 7-beta-D ribofuranosylhypoxanthine. The ultraviolet and mass spectral data and the thin layer chromatographic mobilities of the natural material were identical to those of a synthetic sample. High performance liquid chromatographic retention times and the coinjection high performance liquid chromatography of the natural material with the synthetic samples of the alpha and beta-anomers of 7 ribofuranosylhypoxanthines further confirmed the identity of the isolated material as 7-beta-D-ribofuranosylhypoxanthine. PMID- 3863713 TI - Primary aldosteronism: treatment with trilostane. AB - Trilostane, an inhibitor of the 3 beta-hydroxysteroid dehydrogenase enzyme system of steroid biosynthesis, was applied to 18 patients with primary aldosteronism (9 patients with adrenal adenoma, 9 patients with bilateral adrenal hyperplasia) for 12 weeks. A marked decrease in plasma aldosterone was observed during therapy combined with a reduction in blood pressure and a rise in serum potassium levels. Except for slight diarrhea in 4 patients, which did not require cessation of trilostane medication, no further side effects were observed. Trilostane proved to be an effective inhibitor of aldosterone biosynthesis and was found useful in the treatment of primary aldosteronism both in patients with adrenal adenoma and in those with bilateral adrenal hyperplasia. PMID- 3863714 TI - Effects of trilostane in normotensive and hypertensive rats. AB - The effect of trilostane, a competitive inhibitor of 3 beta-hydroxysteroid dehydrogenase, on adrenal tissue and blood pressure was studied in normotensive and spontaneously hypertensive rats. The drug was administered orally in doses of 10, 200 and 650 mg/kg/day for 2 and 4 weeks. Trilostane induced an increase in adrenal weight by lipoid transformation of the zona fasciculata. Simultaneously a reduction of retroperitoneal fat tissue was seen in all animals. A significant increase in blood pressure was observed under a trilostane medication of 650 mg/kg/day in normotensive as well as in spontaneously hypertensive rats. Blood pressure under lower doses did not increase significantly. Both increase of blood pressure and reduction of retroperitoneal fat tissue might be caused by increased release and synthesis of catecholamines. PMID- 3863715 TI - [The importance of findings on complement genetics for medicine]. PMID- 3863716 TI - Ofloxacin: antibacterial activity, induction of resistance and killing curves. AB - The antibacterial activity of ofloxacin was compared to that of nalidixic acid, norfloxacin and against various strains. This new quinolone was about 100 times more active than nalidixic acid, and pipemidic acid and generally 2 to 4 fold more active than norfloxacin and pefloxacin except against Pseudomonas aeruginosa. The increase of resistance to ofloxacin, norfloxacin and pefloxacin seems to plateau, usually at about 16 times the initial MIC. The bactericidal activity of ofloxacin also appeared quickly and more rapidly than that of norfloxacin. PMID- 3863717 TI - Similar changes in cardiac morphology and DNA synthesis induced by doxorubicin and 4'-epi-doxorubicin. AB - Doxorubicin is an antineoplastic agent whose clinical administration is limited by dose-dependent irreversible cardiomyopathy. Doxorubicin inhibits the rate of DNA synthesis in cultured rat myocardial cells after 1 h incubation with 16 microM, as is demonstrated by a decreased incorporation of [methyl-3H]thymidine. An analogue of doxorubicin, 4'-epi-doxorubicin, also inhibits the rate of DNA synthesis within 1 h after treatment with 16 microM, to the same extent as doxorubicin-treatment of myocardial cells. Furthermore, similarity between doxorubicin and 4'-epi-doxorubicin in their effect on the myocardial thymidylate pool was also demonstrated by a significantly decreased incorporation of total [methyl-3H]thymidine. The effect of doxorubicin on the rate of DNA synthesis in cultured rat skeletal muscle cells treated for 1 h with 16 microM was quantitatively the same as in myocardial cells. Light microscopy of doxorubicin- and 4'-epi-doxorubicin-treated myocardial cells and doxorubicin-treated skeletal muscle cells showed distinct nucleolar fragmentation and revealed no differences between the two drugs in their effect on either myocardial or skeletal muscle cells. Electron microscopy of myocardial cells following doxorubicin treatment showed increased nuclear pleomorphism and invaginations, along with a striking and distinctive clumping of nuclear chromatin. Furthermore, an apparent high density of the mitochondria due to an increased matrix volume and a concomitant decrease in the intermembrane compartment were observed. The results of this study indicate that doxorubicin-induced inhibition of cardiac DNA synthesis in cultured myocardial cells is nonpredictive of cardiotoxicity. The mechanism is at least bimodal, and the apparent minor toxicity of 4'-epi-doxorubicin compared with that of doxorubicin in clinical trials cannot be distinguished by a difference in the inhibition of DNA synthesis in the rat heart. PMID- 3863718 TI - Assessment of ventricular function by radionuclide angiography in patients receiving 4'-epidoxorubicin and mitoxantrone. AB - Serial assessment of ventricular function by means of radionuclide angiography was performed in 50 patients with malignant neoplasms who received either 4' epidoxorubicin or mitoxantrone for longer than 3 months. In 9 of 30 patients given 4'-epidoxorubicin, a decrease of greater than or equal to 10% in the left ventricular ejection fraction (LVEF) was documented at doses of 143-1200 mg/m2. Two patients developed clinical signs of cardiotoxicity at a dose of greater than 1000 mg/m2. In 6 of 20 patients given mitoxantrone a decrease of greater than or equal to 10% in the LVEF occurred at doses of 26-98 mg/m2. PMID- 3863719 TI - Effects of 6-thioguanine on communication competence and factors affecting reversibility of phorbol ester inhibition in V79 cells measured by the metabolic cooperation assay and by dye coupling. AB - One assay used to study the role of intracellular communication in tumor promotion examines chemically-induced inhibition of metabolic cooperation between 6-thioguanine (6-TG) sensitive (HGPRT+) V79 Chinese hamster cells in co-culture with 6-TG resistant (HGPRT-) cells. In the present study metabolic cooperation and Lucifer Yellow dye coupling were applied to detect intercellular communication. HGPRT+ cells were still communication competent when pre-incubated with 6-TG for up to 48 h before HGPRT- cells were plated. In both assays the phorbol esters 12-O-tetradecanoylphorbol-13-acetate (TPA) and phorbol-12,13 dibutyrate (PDBu) inhibited intercellular communication completely at 1 ng/ml. Using 6-TG metabolic cooperation, extensive washing of cells failed to reverse the inhibition caused by 100 ng TPA/ml after exposure for as little as 1 h. However, the effect of PDBu was completely eliminated if the drug was removed within 24 h. Complete blockade of dye coupling by 1, 10 or 100 ng TPA/ml was reversible after washing only at 1 ng/ml. Cells cultured in the presence of these TPA concentrations displayed significant reversal of dye coupling inhibition after 40 h. The results indicate that the onset of communication competence impairment between V79 cells by 6-TG is much slower than hitherto implied. Failure of intercellular communication to recover even from short exposure to 100 ng TPA/ml appears to be attributable to its lipophilic nature. Not enough TPA can be removed by washing to overcome its potent inhibitory action. These observations indicate that the physicochemical properties of a chemical must be taken into consideration before making judgements about the duration of inhibition. PMID- 3863720 TI - Natural killer cell activity in atopic dermatitis: a sequential study. AB - It is well-recognized that patients with atopic dermatitis handle certain cutaneous viral infections poorly. As natural killer (NK) cell activity is considered to contribute to the immune response to viral infection, seven young adults with atopic dermatitis had their NK cell function assessed over a 12-month period. Natural killer cell activity was found to correlate inversely with disease activity. The more active the disease, the greater was the reduction in NK cell function (P less than 0.01. In addition, a strong correlation between clinical activity and IgE was shown (P less than 0.001). PMID- 3863721 TI - Relation between nasal/voice accelerometric values and interval estimates of hypernasality. AB - Nasal/throat accelerometric ratios were obtained from 12 hypernasal and three normal children. The accelerometric voltages comprising the ratio were analogs of nasal and anterior-neck tissue vibrations. Audio recordings, which were obtained simultaneously with the accelerometric voltages, were later judged for hypernasality using an equal-appearing-interval (EAI) scale. High correlations were evident between accelerometric and EAI values when a stimulus sentence contained obstruents, semivowels, and vowels. No correlation existed between accelerometric measures and hypernasality judgments when a sentence contained primarily nasal phonemes and vowels. PMID- 3863722 TI - Effect of speaking rate on judgments of disordered speech in children with cleft palate. AB - The effect of increased speaking rate on the perception of disordered speech in children with cleft palate was studied. Six children with cleft palate (ages 7 years to 10 years of age) produced three different sentences over a continuum of speaking rates. Fifteen judges rated each sentence according to the severity of disordered speech perceived, including nasality, nasal distortions, nasal emission, glottal stops, and pharyngeal fricatives. Mean ratings for the 15 judges were determined for each sentence. The results indicated that the perception of disordered speech did not increase as a function of increased speaking rate. Possible explanations for the results include: (1) The speakers with cleft palate made adjustments in movement strategy to accommodate the reduced time in a manner similar to speakers without a cleft. (2) The speakers with cleft palate used movement strategies which, although unlike those used by speakers without a cleft, allowed them to avoid speech deterioration. (3) Increasing speaking rate did not reduce the time available to an extent that it was necessary to change movement strategy. PMID- 3863723 TI - Craniofacial disproportions in Apert's syndrome: an anthropometric study. AB - Twenty craniofacial indices composed of 26 surface measurements taken directly from the head and face were determined in 14 Apert's syndrome patients 18 days to 5 years old (younger subgroup) and 14 patients ages 6 years to 15 years old (older subgroup). All of the patients were North American Caucasians who had undergone early suture release but no facial repair. The indices were compared with those in healthy controls of the same age and sex. The wide intercanthal distance in relation to the narrow soft nose was the most frequent (81.5%) and extensive (17.7% above the maximum normal index value) disproportion. Abnormal indices occurred most often with the combination of one abnormal and one normal measurement (61.0%). All seven of the 16 disproportions seen in both age subgroups increased in frequency nonsignificantly with age: the supernormal cephalic, intercanthal, nasal, and vertical mandibulofacial indices and the subnormal nasofacial, upper face, and jaws' arcs indices. Of the six disproportions that decreased in frequency with age, four changed significantly (the supernormal frontoparietal and frontozygomatic indices and the subnormal mandibulofacial and nasozygomatic indices) and two changed nonsignificantly (the supernormal intercanthoalar and subnormal cheilozygomatic indices). With the exception of two nasal proportions, the extent of the disproportionality decreased in all of the indices that increased with age. PMID- 3863725 TI - Bilateral nasal mucoperiosteal flaps in bilateral cleft palate repair. AB - A simple technique is presented which uses bilateral nasal mucoperiosteal flaps to cover the raw surface on the nasal side of a Wardill-type pushback procedure for cleft palate repair. The flaps provide the additional tissue necessary for this coverage in bilateral cleft repairs. Primary healing was seen in 18 patients, and follow-up speech evaluation in 15 patients demonstrated no nasality in 10, mild sporadic nasality in four, and moderate to severe hypernasality in one. PMID- 3863724 TI - Surface morphology in Treacher Collins syndrome: an anthropometric study. AB - Between 27 and 65 anthropometric measurements were taken for the head and face of 18 Treacher Collins syndrome patients. The most defective and frequent findings were subnormal facial depth measurements, which increased in disproportionality toward the mandible. Width of the face was more frequently and more severely subnormal than that of the mandible. The orbits were hyperteloric with disproportionately short eye fissures and an antimongoloid inclination. The ears were microtic (more so in width than in length) in 58.8 percent of cases but low set in only 20 percent. The nose measurements were mostly normal, which explains the "parrot-beak" character of the nose in the presence of a hypoplastic receding chin; the only nose defects were supernormal height and width in the root and subnormal bridge inclination. The most frequently seen striking disproportions were those between the width of the nasal root and the width of the soft nose, followed by the great discrepancy between the markedly narrow face and the usually normal face height. PMID- 3863726 TI - Methods of assessing speech in relation to velopharyngeal function. AB - Seven speech pathologists with expertise in the evaluation of the speech of individuals with cleft palate agreed that the following parameters should be assessed: case history, oral-peripheral mechanism, articulation, and voice quality. From such information and observations the clinician should be in a position to make inferences about velopharyngeal function. If velopharyngeal function is not normal, it is mandatory that additional information about the mechanism be obtained. PMID- 3863727 TI - A technique for obturating palatal fistulas. AB - Use of nontoxic self-adhesive material is described to obturate residual hard palate fistulas. This material may be used during perceptual and aerodynamic speech assessments to evaluate speech distortion and the relative contributions of velopharyngeal port and fistula to nasal air leakage during speech. It may also be used as an interim obturator prior to surgical repair of a fistula. PMID- 3863728 TI - Secondary correction of the cleft lip and nose deformity: a new technique for revision of whistling deformity. AB - Reconstruction of the continuity of the orbicularis oris is the main component in correction of the whistling deformity. However, many of the cases are associated with other deformities, such as conspicuous lip scars, an unnaturally wide central lip, flaring alae with wide nostril floors, and a short columella with a flat nasal tip. We report a technique that combines correction of such deformities with reconstruction of the orbicularis oris in a single operation. PMID- 3863729 TI - Estimation of VLDL cholesterol in hyperlipidemia. AB - Lipoprotein data from 10947 fasting blood samples drawn between 1968 and 1982 in the Molecular Disease Branch at the National Institutes of Health were used to test the generalizability of estimating very low density lipoprotein cholesterol (VLDL-C) from plasma triglyceride (TG). Patient samples with total cholesterol levels over 500 mg/l and triglyceride values in the 0-100 000 mg/1 range were included in this study. A previously defined linear relationship VLDL-C = 0.20 (TG) was observed in the past by Friedewald and collaborators, allowing estimation of low density lipoprotein cholesterol (LDL-C) without ultracentrifugation for TG values up to 4 000 mg/1. The results from this report extend the use of the Friedewald relationship to higher TG levels, and to various dyslipidemic states. As the VLDL-C estimates become increasingly imprecise for TG values greater than 10 000 mg/l, caution should be exercised using the estimate in the higher TG ranges. Comparisons with an alternative equation VLDL-C = 0.166 (TG) showed equal or improved accuracy with this estimation procedure, particularly at high TG levels. PMID- 3863730 TI - Evaluation of a commercial reagent for precipitating human serum low-density lipoprotein. PMID- 3863731 TI - Eating disorders: assessment and treatment. AB - Anorexia and bulimia are eating disorders affecting a significant number of adolescent and young adult women. The core symptoms of both disorders are similar and include a fear of obesity, body image disturbance, erratic eating patterns, and purging. These symptoms produce significant physical and psychologic complications. Both anorexia and bulimia appear to have a common origin in a fear of obesity and dieting. Anorectics, being "successful" dieters, lose a significant amount of weight; whereas bulimics alternate between binges and purges. Treatment for the eating disorders is gradually evolving as clinical research experience accumulates. For anorexia, hospitalization is indicated when weight falls below 15% of ideal, and most investigators agree that therapy for the core symptoms cannot be undertaken until weight is restored. During the impatient stay, a behavior modification program can effectively organize medical, nutritional, and psychologic support, and offers the quickest and most direct route to weight restoration. The nasogastric tube and total parenteral nutrition are used primarily for those who are severely emaciated or who actively resist standard modes of therapy. Inpatient treatment is most effectively and efficiently rendered in a specialized eating disorder unit. Once weight restoration is progressing, behavior therapy for core symptoms is commenced and continued on an outpatient basis. A variety of behavioral techniques are employed, and they are designed primarily to influence anorectic assumptions and beliefs. Although there may be a brief inpatient stay for initiation of treatment, the bulk of therapy for bulimia occurs on an outpatient basis. The available literature indicates that behavioral techniques and antidepressant medication are effective for the symptoms of bulimia. Early identification of core symptoms of both disorders can lead to an initiation of treatment before the core symptoms become ingrained. A potentially more effective intervention lies in efforts to influence the media. As noted, standards for feminine beauty as portrayed in the media have changed significantly over the past 20 years. An attempt at the primary prevention of eating disorders would include efforts to convince the media to change their standards of femininity from cosmetic slimness to a focus on health and physical fitness. These efforts could stem from professional and lay organizations who have the interest and capability to influence policy. PMID- 3863732 TI - Late components of the auditory evoked potentials in Gilles de la Tourette syndrome. AB - Late components (N1, P2, N2, P3) of the event-related potential (ERP) elicited by simple auditory discrimination tasks were investigated in 6 patients with Gilles de la Tourette syndrome. The ERP's were registrated in the patients before and during drug treatment as well as in 16 healthy controls. It appeared that in Tourette syndrome the N2 and P2 waveforms (target response) at Cz and Pz were remarkably less well identifiable. The results did not reveal P3 abnormalities in the patients. However, the patients demonstrated definite changes in the N1 and P2 components as compared to the controls. The N1 amplitudes were decreased in the patients. During drug treatment the N1 amplitudes increased although they remained smaller than in the controls. It is concluded that Tourette patients have no abnormalities in early and late components, but that specifically the components between 90-280 ms are affected. These abnormalities may reflect specific attention deficits which often occur in Tourette syndrome. PMID- 3863733 TI - Dental health services research in Scotland: a review of some 5-year results. AB - A longitudinal study of dental treatment carried out by the Dental Health Services Research Unit in Dundee has provided a unique opportunity to investigate a variety of aspects of dental care received by a sample of dentate individuals over 5 yr. The distribution of treatment indicated that frequent attenders, especially those who changed dentist, were particularly prone to having teeth filled and that two-thirds of the restorative cost was spent on restoring tooth surfaces that had previously been filled. A quarter of the sample had severe periodontal disease and they tended to visit a dentist less frequently than those with mild periodontal disease. They were also more likely to have teeth extracted but less likely to have a scaling or other periodontal treatment than the moderately diseased. The findings suggest that there is considerable scope for a less treatment-orientated approach to the management of dental caries for those who currently receive most of the restorative treatment. The majority of the population who receive little dental care, especially those with severe periodontal disease, would probably gain by visiting a dentist more frequently. Dentists need to acquire a more positive attitude towards prevention and an increased ability to make intellectually based decisions not to treat. PMID- 3863734 TI - Dental attendance of some of the common immigrant groups in Sweden. AB - The aim of this study was to see how Greek, Polish, Turkish, Yugoslavian and Finnish immigrants utilized dental services offered, as compared to Swedes. The study covered the years 1976-79, using figures from the National Social Insurance Board (NSIB). All foreign citizens of the aforementioned groups born on the 20th of any month and living in the country of Stockholm were selected, together with a comparison group of Swedish citizens. During the 4 yr in question, only 31% of the Greeks, 50% of the Poles, 28% of the Turks, 40% of the Yugoslavs and 75% of the Finns visited a dentist in Sweden, while 87% of the Swedes did. Few immigrants except some Finns went annually. A great majority of all Greeks, Turks and Yugoslavs either saw a dentist only once or else not at all during the whole period. Emergency treatment was significantly more common for these groups than for Poles, Finns or Swedes. The study revealed a fragmentary and episodic use of the dental services offered to most common immigrant groups in Sweden. PMID- 3863735 TI - Score system for behaviour of radiologically diagnosed approximal carious lesions. AB - The evolution of systems which monitor changes in the severity of approximal carious lesions diagnosed from serial bitewing radiographs is reviewed. These systems derive a 'score' for each individual lesion based upon the extent of its progression. A new lesion behaviour score system is described which, unlike its predecessors, allows both lesion regression and data from partially overlapped but readable surfaces to contribute to scores. It employs scoring codes from a previously proposed standardized grading system which is compatible with WHO recommendations for grading clinical caries. The score system is designed to be used as a computer program capable of running on a variety of readily available microcomputers; this allows the incorporation of a flexible range of additional options which use the standard data files to calculate scores according to differing conventions. These accommodate variations in: the threshold at which restorative intervention is practiced, the treatment of reversals of caries diagnosis, the threshold of caries diagnosis and the way in which partially overlapped surfaces are scored. These options allow the system to be configured to suit the local needs of different investigations and workers, and also permit the study of the effects of these various methodologies. PMID- 3863736 TI - Diagnosis of mild enamel fluorosis in permanent maxillary incisors using two scoring systems. AB - The main purpose of this study was to compare the diagnosis of mild enamel fluorosis as established by two scoring systems, that of Dean based primarily on quantitative aspects and that of Thylstrup & Fejerskov with a preferentially qualitative approach. A further aim was to study the prevalence of fluorosis in permanent maxillary incisors after intake of fluoride tablets for a minimum of 5 yr between 1/2 and 6 yr of age in accordance with recommendations from the National Swedish Board of Health and Welfare. Maxillary incisors were examined in 118 13-yr-old children; 49 constituted a tablet group and the remaining 69 a control group who had never consumed tablets. Scored according to Dean, the difference in enamel fluorosis between the two groups was statistically not significant at the 5% level, whereas the system of Thylstrup & Fejerskov did give a significant difference. The frequency of fluorosis was substantially lower than that resulting from consumption of drinking water in Uppsala, Sweden, containing 1-1.2 ppm F. A probable relationship was found between the scoring systems, particularly if the Dean score 0.5 ("questionable") was converted to score 1. To ensure correct diagnosis, the tooth surface should be exposed to prolonged drying and apply relevant criteria for the differential diagnosis of disturbances of other origin. The higher sensitivity of Thylstrup & Fejerskov's system relates to score 1, narrow white lines located corresponding to perikymata. Here there seems to be a risk of over- or underdiagnosing. Recommendations are given for epidemiologic surveys and for experimental trials of limited size. PMID- 3863737 TI - Describing the severity of mottling in a community: a different approach. AB - Dean's community mottling index, though a useful summary measure, suffers from the use of arbitrary scores and the inability to describe the frequency in each of the levels of mottling. An alternative statistical approach, based on the proportional odds model, is used here to describe the severity of mottling in a community. The use of this model is demonstrated on prevalence data collected on 16 Texas communities. PMID- 3863738 TI - Effect of war-time dietary changes on dental health of Finns 40 years later. AB - During the Second World War the incidence of dental caries diminished due to reduced sugar consumption. It is possible that this reduction was more permanent in those age cohorts whose teeth erupted during the war because the teeth had an opportunity to mature before the caries attack. The aim of our study was to establish whether this reduction could still be demonstrated 40 yr after the war. The material consisted of consecutive age cohorts born in 1922-48 from the large Mini-Finland Oral Health Survey representing Finnish adults aged 30 yr or over in 1979. The results showed a systematic difference in the number of caries free premolars and second molars between the age cohort born in 1931-33 and the younger and older age groups in favor of the group 1931-33, indicating that the first years after eruption may have had a long-term effect on the health of the teeth. PMID- 3863739 TI - Survival of dental restorations in young patients. AB - The aim of this study was to show how the survival of restorations placed in teeth of young patients varied with the age of the patient at the time of treatment. Data from the treatment records of 113 regularly attending patients at one practice were collected, and the fate and survival of 1327 restorations was determined from the sequences of treatment of each permanent tooth. Occlusal restorations occurred most frequently (37.6%) and together with the MO and DO restorations (22.6%) accounted for more than half of the restorations in the study. The proportion of replaced restorations increased with increasing patient age at the time of treatment, from 33% to 56%. The survival of all restorations improved the older the patient at the time of treatment, from 40% to 77% surviving 5 yr. The implications for the treatment of carious young permanent teeth are considered. PMID- 3863740 TI - Replacement of a deep, subgingival Class II amalgam restoration using a combined periodontal-restorative procedure: report of a case. PMID- 3863741 TI - The effect of polishing procedures on light-cured composite restorations. PMID- 3863742 TI - Alternative methods for inferior alveolar anesthesia. PMID- 3863743 TI - The role of ultraviolet light in dentistry. PMID- 3863744 TI - Streptococcus mutans and dental caries in infants. PMID- 3863745 TI - Imaging of the ischiorectal fossa. AB - A retrospective evaluation of 500 routine abdominal computed tomography scans revealed 21 cases of ischiorectal fossa disease in 16 patients. Pathologic processes included involvement by primary and secondary neoplasms, usually of gynecologic origin; rectal prolapse; and abscess. These abnormalities can be missed if the ischiorectal fossae are not included in routine abdominal scans. The anatomy of the ischiorectal fossae and their relationship to other pelvic organs are well demonstrated with high-resolution computed tomography scans as well as by magnetic resonance imaging. PMID- 3863746 TI - Surgery in acute leukemia. PMID- 3863747 TI - Gene mapping in the Chinese hamster and conservation of syntenic groups and Q band homologies between Chinese hamster and mouse chromosomes. AB - Using Chinese hamster/mouse somatic cell hybrids segregating hamster chromosomes, we assigned 15 enzyme genes to six different Chinese hamster autosomes. Of the 15 loci, three genes, HK1, PEPC, and SORD, were newly assigned to chromosomes 1, 5, and 6, respectively, while ENO1, PGD, and PGM1 were assigned to the long arm of chromosome 2, in the segment 2q113----qter. The locations of the following loci were confirmed: ESD, NP, and PEPB on chromosome 1, ME1 and MPI on chromosome 4, AK1 on chromosome 6, and GPI and PEPD on chromosome 9. Comparative mapping of Chinese hamster and laboratory mouse chromosomes revealed conservation of syntenic groups and extensive banding homology between the Chinese hamster and mouse chromosomes on which homologous enzyme markers have been mapped. PMID- 3863748 TI - Regional assignments of eight genes on chromosome 2 in the American mink. AB - Chromosomal rearrangements involving mink chromosome 2 in mink-Chinese hamster and mink-mouse hepatoma somatic hybrids were identified. By means of these rearrangements, we assigned the genes for HK1, GOT1, and PP to 2pter----p22, those for PGD, PGM1 and ENO1 to 2q24.4----qter, and that for NP and ADK to 2pter- --p11.1. PMID- 3863749 TI - Cystic fibrosis: progress in mapping the disease locus using polymorphic DNA markers. I. PMID- 3863750 TI - Assisted mechanical ventilation with the Servo ventilator. PMID- 3863751 TI - Prostaglandins in pathophysiology of peptic ulcer disease. AB - Gastric ulcer (GU) and duodenal ulcer (DU) occur as a result of the imbalance between aggressive and defensive factors affecting the gastroduodenal mucosa. Prostaglandins (PG) of E and I series are generated throughout the gastrointestinal tract, particularly in the gastric and duodenal mucosa, and are released into the gut lumen upon vagal and hormonal stimulation. Endogenous PGs may be involved in the maintenance of mucosal integrity, control of mucosal blood flow and protection against potentially noxious agents. Gastric mucosa of ulcer patients tends to generate smaller amounts of PGs of E and I series and exhibits a reduced ratio of PG to thromboxane generation, which suggests that the deficiency of protective PG may play a role in the pathogenesis of peptic ulcer. Suppression of mucosal generation of PGs by non-steroidal anti-inflammatory compounds causes mucosal damage and increases the risk of the formation or exacerbation of peptic ulcer. Exogenous PGE and its stable analogs have been tested successfully in the treatment of GU and DU and the results so far obtained indicate that these agents significantly increase the ulcer healing rate. Certain anti-ulcer drugs such as carbenoxolone, sucralfate, colloidal bismuth and cimetidine appear to exert their beneficial effects on ulcer healing by mediating the release of endogenous PGs. PMID- 3863752 TI - Prostaglandins as hormones. AB - In recent years, the concept of a hormone has been greatly changed, and the term 'cybernin' is used to describe a substance which possesses not only endocrine activity but also has autocrine and paracrine effects. The cytoprotective effects of prostaglandins are reviewed with respect to the relationship between prostaglandins and cyclic AMP, and to the effects of prostaglandins on ion transport. Prostaglandins are produced by cell membranes of many tissues and are found in the vasculature. However, the metabolic degradation of prostaglandins is rapid and their significance as circulatory hormones has not been clarified. Yet it is clear that prostaglandins have important physiological activity and it is possible that the effects of prostaglandins are mediated by paracrine or autocrine mechanisms. In order to classify prostaglandins as hormones, it is necessary to clarify their biological activities, to identify a specific and saturable receptor, and to determine a second messenger. This paper discusses the extent to which prostaglandins conform to our present concept of hormones. The existence of a prostaglandin receptor and the role of adenylate cyclase have been confirmed using cultured cell clones. The following observations have been made. (i) For a series of compounds, potency in competing for (3H)PGE1 binding sites correlated with their ability to stimulate adenylate cyclase activity. (ii) There was a relationship between rates of binding and change in enzyme activity. (iii) The presence or absence of PGE1-sensitive adenylate cyclase corresponded to (3H)PGE1 binding capacity. The presence of a prostaglandin receptor has been identified in rat liver, bovine thyroid, bovine corpus luteum, frog erythrocyte, hamster adipocyte, and human adipocyte.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863753 TI - The epidemiology of insulin-dependent diabetes mellitus (IDDM) in Finland and in northern Europe. AB - The incidence and prevalence of IDDM are high by international standards in all Nordic countries, and Finland has the highest incidence and prevalence figures of the disease in the world. During the period 1970-1980, the mean annual incidence (per 100,000) in 0-14-yr-old children was 28.6 in Finland, 22.7 in Sweden, 17.6 in Norway, and 14.0 in Denmark. The corresponding prevalence figures were: Finland 191, Sweden 148, Iceland 141, Norway 120, and Denmark 83. Thus, on a countrywide basis the incidence increased from south to north (and from west to east). However, within some of the Nordic countries (Finland, Norway, and Sweden) there were regional variations not compatible with the above "latitude rule." As in many studies from other countries, the following characteristics were observed in the IDDM epidemiology in children and adolescents: a steady rise of incidence throughout childhood until puberty, the peak occurring earlier in girls than in boys, a male excess in young children and adolescents, a seasonal variation, and a secular trend. The possible causes of the high incidence and prevalence are briefly discussed. PMID- 3863754 TI - Purification and tissue-specific expression of casein kinase from the lactating guinea-pig mammary gland. AB - A serine-specific casein kinase, an integral membrane protein of the lactating guinea-pig mammary gland, has been purified from a Golgi-enriched membrane fraction, using a combination of sucrose gradient centrifugation and chromatography on ATP-agarose. The enzyme comprises a polypeptide of estimated Mr 74 000 as judged by sodium dodecyl sulphate/polyacrylamide gel electrophoresis, compared with a monomer Mr of 50 000 as determined by sucrose gradient centrifugation in the presence of 500 mM NaCl and 0.1% Triton X-100. Kinetic studies show that the purified enzyme exhibits kinetic constants distinctly different from the rabbit reticulocyte casein kinases I and II, whilst polyclonal antisera raised against the mammary gland enzyme did not cross-react with soluble liver or reticulocyte protein kinase activities. Immunoblotting and immunocytochemical analyses demonstrate the mammary gland enzyme's apparently unique location in lactating mammary gland tissue. Comparative studies with polyclonal antisera raised against bovine galactosyltransferase, show that casein kinase and galactosyltransferase have a similar intracellular localisation in the lactating mammary gland as judged by immunocytochemistry at the light level, but that casein kinase was unique to mammary gland whereas galactosyltransferase could be found in other tissues. The results extended our earlier observations which suggest a Golgi location for casein kinase, and demonstrate that future studies using this enzyme may well prove advantageous for the study of intracellular mechanisms involved in the biogenesis of organelles, in this instance the Golgi apparatus. PMID- 3863755 TI - Seventh European Cell Cycle Workshop. Heidelberg, 9-13 September 1985. Abstracts. PMID- 3863756 TI - Proliferation and maturation of human leukemic cells in liquid culture: activity of human placenta conditioned medium and retinoic acid. AB - Marrow or peripheral blood cells from 28 patients with acute myeloid leukemia (AML) or chronic myeloid leukemia in blastic crisis (CML-BC) were studied in both liquid and agar cultures. The proliferation and maturation of these cells were followed for 15-20 days in liquid culture with or without the addition of human placenta conditioned medium (HPCM) and/or retinoic acid (RA). In nine patients (group 1), cells underwent both proliferation and maturation, i.e., the percentage of peroxidase-positive cells (PO), phagocytic cells, and mature forms increased. For the remaining 19 patients (group 2), no proliferation was observed. However, 11 of these leukemic cell samples showed maturation (group 2A), while the eight others remained immature (group 2B). In agar culture, cell samples from group 1 showed cluster growth, group 2 no growth. Maturation without proliferation was observed for group-1 liquid cultures not containing HPCM and those containing HPCM and RA. The viability rapidly decreased in liquid cultures with only addition of RA. HPCM and RA showed no effect on group-2 cell cultures. PMID- 3863759 TI - [Remineralization]. PMID- 3863757 TI - Ibuprofen modifies the inflammatory response of the murine lung to Pseudomonas aeruginosa. AB - In chronic P. aeruginosa infection, lung tissue damage is induced by either the microorganism or the inflammatory response. We investigated, in an animal model, whether a non-steroidal anti-inflammatory drug, ibuprofen, reduced lung inflammation produced by P. aeruginosa. Lung lavages, pulmonary clearance of P. aeruginosa and lung pathology were studied in CD-1 mice injected with sodium ibuprofenate. A single dose of the drug, injected immediately after 30 min exposure to the P. aeruginosa aerosol, decreased the recruitment of granulocytes into airways in a dose-dependent manner. Pretreatment with 2 doses of the drug 18 and 6 h before the P. aeruginosa challenge was even more effective. The kinetics of changes in prostaglandin E2, 6-keto-prostaglandin F1 alpha and thromboxane B2 concentrations in lung lavage fluids after P. aeruginosa aerosol were also modified by ibuprofen. Moreover, ibuprofen treatment did not impair lung clearance of the challenge microorganisms, and the animals had less inflammation of the lungs. PMID- 3863758 TI - Fluoroaluminates activate transducin-GDP by mimicking the gamma-phosphate of GTP in its binding site. AB - Fluoride activation of the cGMP cascade of vision requires the presence of aluminum, and is shown to be mediated by the binding of one A1F-4 to the GDP/GTP binding subunit of transducin. The presence of GDP in the site is required: A1F-4 is ineffective when the site is empty or when GDP beta S is substituted for GDP. This sensitivity to the sulfur of GDP beta S suggests that A1F-4 is in contact with the GDP. Striking structural similarities between A1F-4 and PO3-4 lead us to propose that A1F-4 mimics the role of the gamma-phosphate of GTP. PMID- 3863760 TI - [Prosthetic rehabilitation of a patient with neurofibroma after repeated operations]. PMID- 3863761 TI - [Possibility of caries prevention by fluoride drops in a Kormend nursery school]. PMID- 3863762 TI - [Oral hygiene in children with cleft lip and palate]. PMID- 3863763 TI - [Dental anomalies in the cases of a district dentist. Molars with pyramidal roots]. PMID- 3863764 TI - [Management of juvenile parodontosis]. PMID- 3863765 TI - [Surgical-oncological aspects of combined radiation and cytostatic therapy of malignant tumors in the facial region]. PMID- 3863766 TI - [Tardive dyskinesia: drug-induced damage, recognizable in dentistry at an early stage]. PMID- 3863767 TI - [Dental anomalies in the cases of a district dentist. 3. Three forms of tooth gemination]. PMID- 3863768 TI - Typhlitis in adults. AB - Although described initially in children, typhlitis is an important clinical condition that may also occur in adults with hematologic malignancy or, less commonly, aplastic anemia. We describe 6 adult patients with typhlitis and review the salient features of this condition. In typhlitis, a necrotizing process of multifactorial origin involves the right colon alone or the right colon and other areas of the intestine as well. Secondary colonization of mucosal ulcers by colonic flora commonly leads to septicemia and pyrexia. Typhlitis may be associated with a variety of clinical and radiographic findings. However, a high index of suspicion and certain constellations of clinical and radiographic findings may lead to an accurate presumptive diagnosis of typhlitis, followed by the institution of appropriate therapy. Notwithstanding, the short-term prognosis for typhlitis remains poor. PMID- 3863769 TI - Trophic actions of E2 prostaglandins in the rat gastrointestinal mucosa. A quantitative morphologic study. AB - Adult, male Sprague-Dawley rats in groups of 10 received one of the following treatments orally twice daily for 3 wk: prostaglandin E2 (PGE2) 7.5 mg X kg-1, 15(R)-15-methyl prostaglandin E2 (MePGE2) at 0.2 or 2.0 mg X kg-1, or vehicle. After 18 h of fasting and 10-12 h after the last dose, the rats were anesthetized, and the gastrointestinal tract was fixed and processed for macroscopic and microscopic investigations. Trophic changes were more pronounced in the gastric antrum than in the gastric corpus or small intestine. The thickness of the antral mucosa was significantly increased by PGE2 and in a dose related way by MePGE2. The mucosa of the gastric corpus became significantly thicker only with the higher dose of MePGE2. In all the prostaglandin-treated groups, the proportion of endocrine cells was reduced. Small--but sometimes significant--changes were registered in the proportions of the various exocrine cells. The parietal cells became significantly larger (+88%) in the rats treated with high doses of MePGE2. The secretory surface of the parietal cells was markedly increased by PGE2 and MePGE2. The enlargement of the secretory surface in animals treated with prostaglandins corresponded to a marked elevation of the basal gastric acid secretion and an increase in plasma gastrin levels. Hypergastrinemia can explain some, but not all, of the trophic changes observed in this study. Light microscopic examination of the duodenal and jejunal mucosa showed dose-related increases in villus heights and crypt lengths after treatment with MePGE2. Only the duodenal villus heights were increased by PGE2. PMID- 3863770 TI - [Avoiding cesarean deliveries by intravenous prostaglandin E2 administration (PGE2)]. AB - The study reported here was prompted by the question whether caesarean deliveries which would otherwise be necessary can be avoided by intravenous infusion of prostaglandin E2 (PGE2). The authors consider intravenous administration of PGE2 during delivery to be indicated in cases which fail to respond to therapy after three local cervical maturation attempts and in standstills where oxytocin has no effect. Out of a total of 5835 women who gave birth at the Obstetrics Department of the Berlin-Neukolln Gynecological Clinic between 1980 and 1981, those who had been given intravenous infusions of PGE2 were identified and a check was made to establish whether this treatment offers any advantages. PGE2 infusion after unsuccessful intracervical application of PGE2 gel: Out of 1122 risk patients in whom cervical maturation prior to induction of birth appeared desirable, 43 (3.8%) still had a Bishop Score of less than or equal to 7 after three local applications of PGE2 gel. Attempts to achieve a vaginal delivery in spite of this, by means of PGE2 infusion, were successful in 60% of the cases. The mean rate of PGE2 infusion was 1.1 +/- 0.3 microgram/min. Four women were given oxytocin in addition, in an average dose of 9.3 +/- 1.1 mU/min. The average duration of labour was 10 hours 30 min. Complications in mother and child occurred no more frequently than in other risk births. PGE2 infusion in cases with standstill not responding to oxytocin treatment: In 82 parturients (1.4%) a standstill occurred during labour after initially normal dilation of the cervix, and could not be overcome by administration of oxytocin.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863771 TI - [Use of high doses of methotrexate in the program treatment of children with lymphoblastic leukemia]. PMID- 3863772 TI - [Use of the O6-Paris-LA-66 program in the treatment of patients with lymphoblastic leukemia under 20 years of age]. PMID- 3863773 TI - [Indicators of immunologic reactivity in patients with lymphoblastic leukemia during cytostatic therapy]. PMID- 3863774 TI - [Prognostic significance of fibrillar formations during blast crisis in myelocytic leukemia]. PMID- 3863775 TI - [Disputable problems of cytochemical identification of acute basophilic and promyelocytic leukemia]. PMID- 3863776 TI - [Urinary spermidine in assessing the effectiveness of chronic leukemia treatment]. PMID- 3863777 TI - The genetic susceptibility to insulin-dependent diabetes mellitus: combined segregation and linkage analysis. AB - We report a combined segregation and linkage analysis of a Danish sample of 216 insulin-dependent diabetes mellitus (IDDM) nuclear families: of these 216, twenty multiplex families were haplotyped regarding HLA-DR and -B markers. The analysis was conducted using the computer program COMBIN, which includes a modifier to absorb family resemblance that is additional to the effect of the major locus that is assumed linked to a marker locus, eg, within the HLA region. The initial analysis could clearly reject a dominant major locus but could not discriminate between other models with or without modifier. However, after adding supplementary information on population associations between HLA and IDDM together with the identity-by-descent (IBD) distribution to the analysis, a final model was identified. This invokes an additive major locus, linked to HLA with recombination not significantly different from 0, a disease gene frequency of 0.217, plus a dominant modifier. From this model it can be predicted that about 0.15% of the general population is at 100% risk of IDDM, about 5% is at intermediate risk (approximately 10%), while the remaining population has a risk of 0. The model predicts recurrence risks compatible with empirically estimated values. Particularly strong, positive haplotype associations were found for the DR3,B8, DR3,B18, and DR4,B15 haplotypes, but detailed analyses showed that neither these particular haplotypes nor the DR3 and DR4 haplotypes in general could entirely explain the HLA-associated susceptibility. The DR2 haplotypes showed a strong negative association. The results are discussed in the light of available data on the epidemiology of IDDM in order to provide a framework for further epidemiological studies. PMID- 3863778 TI - A comparison of sib-pair linkage tests for disease susceptibility loci. AB - An analytical study is conducted of the properties of statistical tests to detect linkage between a disease locus and a very polymorphic marker locus when data on sib pairs are available. In most instances the most powerful test is the test based on the mean number of marker alleles shared identical by descent by the two members of a sib pair, and the most efficient sampling strategy is almost always to sample only pairs with both sibs affected. We show it is valid to use the information from all possible sib pairs as though they came from separate families when data on sibships of size three or larger are available, though more power may be obtained if different weights are given to the different sibship sizes. PMID- 3863779 TI - A multivariate analysis of familial associations of lipoprotein levels in the Lipid Research Clinics Collaborative Family Study: I. Familial correlation and regression analyses. AB - In view of the complex, intraindividual relationships among different lipoprotein levels (LDL-C, HDL-C, and VLDL-C), multivariate methods aimed at assessing joint familial associations and their possible determinants were performed in the white, random sample component of the Collaborative Lipid Research Clinics Family Study data (1,336 families with 5,097 subjects). After appropriate transformations and covariate adjustments of the data, several kinds of correlation and regression analyses were performed, taking into consideration variable family size and possible age and clinic differences. The association patterns across clinics and age strata were found to be homogeneous for the vast majority of comparisons. The results of multivariate analyses (especially the significant association of each lipoprotein among biological relatives), the persistence of parental levels as the best predictors for the same lipoprotein levels among the offspring, and the essentially unchanged partial correlation estimates as compared to ordinary correlations suggest strong influence of factors specific to each lipoprotein in the familial associations. But the highly significant intraindividual correlations and the nonnegligible cross-correlations among relatives also suggest the additional presence of common underlying factors for the familial associations, especially between HDL-C and VLDL-C and to a lesser extent between LDL-C and VLDL-C. The issues stemming from these analyses and the directions for further analyses are discussed. PMID- 3863780 TI - Complete nucleotide sequence of the Azotobacter vinelandii nitrogenase structural gene cluster. AB - DNA fragments coding for the structural genes for Azotobacter vinelandii nitrogenase have been isolated and sequenced. These genes, nifH, nifD and nifK, code for the iron (Fe) protein and the alpha and beta subunits of the molybdenum iron (MoFe) protein, respectively. They are arranged in the order: promoter:nifH:nifD:nifK. There are 129 nucleotides separating nifH and nifD and 101 nucleotides separating nifD and nifK. The amino acid (aa) sequences deduced from the nucleotide sequences are discussed in relation to the prosthetic group binding regions of the nifHDK-encoded polypeptides. PMID- 3863781 TI - Recurring bilateral hypopyon in chronic myeloid leukemia in blastic transformation. A case report. AB - There have been many reports in the literature on keratohypopyon in acute leukemia. We report a case of a 40-year-old-man with chronic myeloid leukemia who developed bilateral, recurring kerato-hypopyon, the first manifestation of which appeared during intrathecal chemotherapeutic treatment just after an episode of leukemic meningiosis. There was no involvement of the CNS at the time of the relapse of kerato-hypopyon. PMID- 3863782 TI - Cervical priming and/or induction by intracervical application of PGE2-gel in term patients with preeclampsia and unfavorable cervical states. AB - 92 preeclamptic women with unfavorable cervical states were treated with intracervical application of prostaglandin E2 (PGE2) in gel for cervical priming and/or labor induction. 55 (60%) were delivered after a single PGE2-gel application. In 27 (29%) the cervical state was improved after 24 h and labor could be induced by oxytocin infusion. Thus, 89% of the women were delivered within 48 h after a single PGE2-gel application. In 10 women (11%) a second PGE2 gel application had to be done before oxytocin infusion. The frequency of cesarean sections was low (5%). No case of uterine hypertonus was seen. No gastrointestinal side effects were observed. All newborn infants had an apgar score at 5 min of more than 7 and were in good condition. PMID- 3863783 TI - Follicular atresia in the ovary of two species of quails, Coturnix coromendalica and Perdicula argoondah. PMID- 3863784 TI - [Clinical aspects of psychosomatic disorders: anorexia nervosa and bulimia]. PMID- 3863785 TI - New directions for the JCAH?. Interview by Emily Friedman. PMID- 3863786 TI - JCAH task force scrutinizes current quality standards for alcohol- and substance abuse treatment programs. PMID- 3863787 TI - Secondary delayed type hypersensitivity to H-2 subregion-coded alloantigens. AB - Secondary type delayed type hypersensitivity (DTH) in mice against class I alloantigens or non-H-2 alloantigens is characterized by an earlier appearance of DTH reactivity after booster immunization compared with the development of DTH reactivity after primary immunization. In contrast to the primary and secondary DTH against class I or non-H-2 alloantigens, the development of secondary DTH against class II alloantigens or a set of alloantigens that includes class II alloantigens is not faster than the development of primary DTH. Thus, primary and secondary immunization with class II alloantigens prevents secondary type DTH reactivity to simultaneously administered class I alloantigens and non-H-2 alloantigens. PMID- 3863788 TI - Quantitative relationship between T3 and the T-cell antigen receptor on a human leukaemic line. AB - The T-cell antigen receptor complex consists of an idiotypic molecule, Ti, and T3. We have investigated the relationship between Ti and T3 on a leukaemic line HPB-ALL. This has shown that the two molecules are expressed on the cell surface in equal numbers, and that a similar stoichiometric relationship is seen on sublines of HPB-ALL selected for diminished expression of Ti. Furthermore, the degrees of modulation and rates of resynthesis of Ti and T3 following modulation were very similar, regardless of whether anti-Ti or anti-T3 was used to produce the modulation. This work strongly suggests that the expression of Ti and T3 are under common control. PMID- 3863789 TI - Cytochemical markers in normal & malignant lymphoid cells. PMID- 3863790 TI - [Changes in the enamel structure of permanent teeth acquired during amelogenesis]. PMID- 3863791 TI - [Physical tolerance of removable dental prostheses after ultrasonic cleaning]. PMID- 3863792 TI - [Prescription of antibiotics in oro-dental pathology]. PMID- 3863793 TI - [Significance of tooth mobility in periodontitis and its treatment]. PMID- 3863794 TI - Renal tolerance of imipenem/cilastatin and other beta-lactam antibiotics in rats. AB - Imipenem is inactivated by the renal dehydropeptidase I, which can be inhibited by cilastatin. Therefore, both compounds are administered in combination. According to the manufacturers, they are not nephrotoxic in rats. 70 female Wistar rats (n = 10/test series) were treated over five days at dosage intervals of 12 hours with intraperitoneal injections (injection volume: 10 ml/200 g body weight) of isotonic 0.9% NaCl, cilastatin (1000 mg/kg/day), imipenem (500 and 1000 mg/kg/day), cilastatin + imipenem (500 or 1000 mg/kg/day each) and cefsulodin (1000 mg/kg/day). The nocturnal excretion of renal tubular cells was determined. Furthermore, three rats in each test were treated intraperitoneally with 150 mg/kg imipenem or with the combination of imipenem and cilastatin (150 mg/kg each). Imipenem concentrations were measured over four hours in the blood of the tail vein. Commencing on the second day of study, cilastatin, imipenem and the combination of both substances induced significant surplus excretion of tubular cells compared to the control group. The tubulotoxic effects of imipenem and imipenem + cilastatin in combination were dose-dependent. The toxic effects of imipenem, imipenem + cilastatin and cefsulodin did not significantly differ. Cilastatin prolonged the half-life of imipenem in the blood from 0.4 to 0.9 h and increased the AUC of imipenem from 156 to 325 mg/l/h.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863795 TI - Studies of cefotaxime serum concentrations during surgery under general anaesthesia and its passage to the wound fluid after surgery for breast cancer. AB - We are reporting on a comparison of serum concentrations of cefotaxime during and after surgery and on its passage to the wound fluid after surgery. Five patients undergoing mastectomy and dissection of the axillary lymph nodes for breast cancer were studied. Serum concentrations were compared after 2 g of cefotaxime dissolved in 20 ml of saline had been administered by i.v. bolus injection intraoperatively during general anaesthesia and six to eight days postoperatively in a conscious state. After intraoperative administration under general anaesthesia, cefotaxime serum concentrations were 157.3 mg/l at 15 min, 87.5 mg/l at 30 min, 43.08 mg/l at 1 h, 15.54 mg/l at 2 h and 9.56 mg/l at 3 h. In a conscious state, cefotaxime serum concentrations were 122.0 mg/l at 15 min, 84.35 mg/l at 30 min, 47.63 mg/l at 1 h, 18.2 mg/l at 2 h and 9.63 mg/l at 3 h, comparable to the time course under general anaesthesia. The half-life of cefotaxime was 0.86 h under general anaesthesia and 0.92 h in a conscious state. Urinary recovery of cefotaxime (0 to 3 h) under anaesthesia and in a conscious state was 53.8% and 56.3%, respectively (as reported previously for a nonsurgical state). Samples of wound fluid were taken at the completion of surgery from the drain inserted subcutaneously into the wound or by means of a tracheal aspirator kit attached to a portable aspirator. Cefotaxime concentrations were determined postoperatively on days six to eight, when the wound fluid became no longer serous.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863796 TI - The use of sugar in foods. AB - Although the main reason for the use of sugar is its sweet taste, sugar has many other functions in food technology. The most important among these are that added sugar in foods acts as a sweetener, preservative, texture modifier, fermentation substrate, flavouring and colouring agent, bulking agent. The various methods of use of sugar are based on its physical and chemical properties. The replacement of sugar by the newly available sweeteners is difficult if the sweetness values or physical and chemical properties of the substitutes differ greatly from those of sucrose. PMID- 3863797 TI - Oral effects of sugars and sweeteners. AB - Increasingly, sweeteners are being used in the diets of caries-prone individuals to reduce sugar intake. Such substitution deprives the bacteria in the dental plaque of the sugars many of them use to produce the acids that cause demineralization of tooth tissue and development of the caries lesion. Sweeteners are particularly effective replacements for dietary sugars because they also stimulate the flow of saliva which can, through several mechanisms, prevent demineralization and even bring about remineralization of already demineralized enamel, dentine or cementum. More saliva means that more of its nitrogen containing substances will reach the dental plaque where they can be degraded by plaque bacteria and thus produce base and the alkaline conditions that are conducive to a shift from tooth demineralization to tooth remineralization. At the same time, the additional saliva brings to the plaque more calcium and phosphate ions, the necessary ingredients for the remineralization process. At alkaline pH, saliva also provides a source of easily solubilized calcium phosphate that, in association with salivary carbohydrate protein, becomes part of the dental plaque. Because it is dissolved by acid more easily than is the calcium phosphate of the tooth, plaque calcium phosphate acts as a substitute for the tooth tissues when periods of acid attack occur following sugar ingestion. It is proposed that diagnostic tests be developed that can conveniently determine the acid-base and demineralization-remineralization potentials of different dental plaques and that these tests be used to determine the extent to which sugars in the diets of caries-active individuals be replaced with sweeteners. PMID- 3863798 TI - Prediction of the cariogenicity of various foods. AB - Because of the complex nature of the interactions between dietary constituents and the teeth in the development of dental caries it is inappropriate to try to arrive at an absolute determination of whether or not consumption of a food will always give rise to the formation of cavities. Prediction of a food's cariogenicity can be most usefully regarded as a relative assessment of the food's potential, among other foods, to give rise to caries, with other modifying factors held constant. Cariogenic potential cannot be assessed in human studies for a wide range of foods. However, the most productive experimental approaches have employed animal feeding studies, where eating patterns can be strictly controlled and human biochemical tests on pH responses to food consumption by dental plaque in vivo. Such studies have now produced data on dietary items normally consumed in western countries as snacks, sweets, soft drinks as well as mealtime items. Data on the relative cariogenic potential of foods are of value not only to the dental profession in advising patients on food selection, but also to the food industry in relation to product development and marketing and to government agencies with the responsibility for health education and marketing regulation. PMID- 3863799 TI - Standardization in dental photography. AB - The main purpose of dental photography is documentation. This means that a maximum of information has to be recorded by photographic means under reproducible conditions. Only if the conditions are reproducible can photographs be regarded as really adequate recording tools. There must be standardization of the clinical camera and associated equipment, and the formating and lighting of those intra- and extra-oral views which are often used in dental photography. The most versatile camera body for dental photography is the 35 mm single-lens-reflex camera. The proper lens is a 100 up to 135 mm-macrolens, which allows a magnification of 1:1 or better. The proper light source is a rotating side mounted flash unit or better, a twin flash with reflectors, each of them mounted at one side of the lens. Ring flash can be used in intra-oral photography. Five important views are described which portray the intra-oral status: a frontal view, two lateral views and occlusal views of the two arches. In addition to these views there are six facial views which are often used in dental practice: two lateral views; a frontal view; a frontal view with the head tilted back; and two fronto-lateral views at angles of 45 degrees to the sagittal plane. By standardizing the photographic conditions the photographs produced will be comparable to each other, even if successive photographs are taken at long time intervals and by different photographers. Only in this way can dental photography be used as a valuable aid to documentation. PMID- 3863800 TI - Reprints and photocopies as sources of information: how to make the best use of them. AB - The acquisition of information is a permanent endeavour in professional life. The strategies presented here will help dentists to perform this task expediently and with the least cost. A model for requesting reprints is suggested. It has evolved as a result of the writer's experience both as an author and a solicitor of information. PMID- 3863801 TI - Changing patterns of oral health and implications for oral health manpower: Part I. Report of a Working Group convened jointly by the Federation Dentaire Internationale and the World Health Organisation. AB - Data on oral health, sugar consumption, fluoride availability and other preventive programmes from twenty selected developed and developing countries were reviewed to identify the changes in oral health in children and factors associated with these changes during the past 20 years. Nine developed (industrialized) countries showed apparent substantial reduction (30-50 per cent) in the prevalence of dental caries in 5- and 12-year-old children during the past decade. The countries are: Australia, Denmark, Finland, Netherlands, New Zealand, Norway, Sweden, United Kingdom and the USA. Caries in Thailand and Nigeria and other developing countries appears to have increased considerably. The most probable reasons for the decrease in dental caries in children in the developed countries were considered to be associated with: the widespread exposure to fluoridated water and/or fluoride supplements, especially the regular use of fluoride toothpaste; the provision of preventive oral health services; the increased 'dental awareness' through organized oral health education programmes; the ready availability of dental resources. The factor common to all countries with a substantial reduction in caries was fluoride, either as fluoridated water or toothpaste. Countries with decreased caries but no fluoridated water supplies had all experienced a rapid increase in the availability and the use of fluoride toothpaste during the past 10 years. The contribution of improved dental health programmes, other than those involving fluoride, could not be adequately assessed. These changes, which appear to be continuing, have relevance also to similar countries which might just be entering the reduction phase, or for which that phase may already have begun, though it is as yet unnoticed and unreported. They also have relevance to developing countries in indicating how caries and perhaps periodontal diseases have been controlled and prevented. It is inevitable that in developed countries with reducing dental caries there will be a decreased need for dental services and hence a change in the need for dental personnel. However, the lack of adequate data in most countries makes prediction of future changes in oral health and manpower needs a precarious procedure. The whole review indicates the urgent need for regular monitoring of oral health status in all countries and for better personnel planning and production in quantity and appropriate categories. Part II of this report will deal with a recommended process for achieving these urgent needs. PMID- 3863802 TI - Guidelines to group practice. Federation Dentaire Internationale. Technical Report No. 22. AB - This report reviews the types of group practice, the essential financial arrangements and the management procedures involved. The advantages and disadvantages of group practice to the dentist and the patient are reviewed. PMID- 3863803 TI - Guidelines to oral hygiene: toothbrushes, toothbrushing, dentifrices and abrasivity. Federation Dentaire Internationale. Technical Report No. 23. AB - This report provides a series of statements on toothbrushes, toothbrushing, dentifrices and their abrasivity. The use of conventional toothbrushes and dentifrices will adequately cleanse the exposed surfaces of the teeth. Neither variations in the design of toothbrushes nor the formulation of dentifrices confer extra cleaning benefit. For efficient cleaning patient knowledge, motivation and dexterity are of overriding importance. PMID- 3863804 TI - Hypnotic interventions for pain management. PMID- 3863805 TI - Saliva as an indicator of stress. PMID- 3863806 TI - Affective disturbance and denial of problems in dental patients with pain. PMID- 3863807 TI - Inflammatory characteristics of PAF-acether in the skin of experimental animals and man. AB - PAF-acether (AGEPC) is released from a range of inflammatory cell types and has properties consistent with those of a mediator of inflammation. Intradermal injection of PAF-acether in experimental animals causes immediate extravasation of plasma protein, accompanied by intravascular accumulation of platelets and neutrophils; this is followed by persistent extravascular accumulation of neutrophils and mononuclear cells. We have studied the inflammatory characteristics of intradermally injected PAF-acether in human skin. An early (weal and flare) response is succeeded, in 60% of subjects, by a late-onset area of erythema at the site of the resolved weal, reminiscent of the dual response to allergen in sensitized individuals. The time course and dose-response relationship of the early response was determined and a synergistic interaction between PAF-acether and prostaglandin E2 established. The weal response to PAF acether was not inhibited by concurrent administration of chlorpheniramine. Histopathological examination of serial elliptical biopsies revealed accumulation of both neutrophils and mononuclear cells in response to intracutaneous PAF acether. We would suggest that PAF-acether is likely to be a mediator of both acute and persistent inflammation. PMID- 3863808 TI - Effects of long-term extended contact lens wear on the human cornea. AB - The effects of long-term extended wear of soft contact lenses on the human cornea were determined by examining 27 patients who had worn a high water content hydrogel contact lens in 1 eye only for an average of 62 +/- 29 months (mean +/- SD). The other eye, which was either emmetropic or amblyopic, acted as a control. The lens-wearing eye showed a 14.8% reduction in epithelial oxygen uptake (P less than 0.001), a 5.6% reduction in epithelial thickness (P less than 0.05), a 2.3% reduction in stromal thickness (P less than 0.05), the induction of epithelial microcysts, and a 22.0% increase in endothelial polymegathism (P less than 0.001). Endothelial cell density was unaffected by extended lens wear. No interocular differences in any of these physiological characteristics were found in a matched control group of anisometropic and amblyopic subjects who did not wear contact lenses. The patients ceased lens wear for up to one month and recovery of corneal function was monitored during this period. Epithelial oxygen uptake and thickness recovered within 33 days of lens removal. The number of microcysts increased over the first 7 days, but decreased thereafter; some microcysts were still present 33 days after lens removal. Recovery from stromal thinning had not occurred after 33 days following lens removal. There was a slight reduction in polymegathism in some patients, but overall this was not statistically significant. These findings establish (1) that the extended wear of hydrogel lenses induces significant changes in all layers of the cornea; (2) that lens wear suppresses aerobic epithelial metabolism, which may compromise the epithelial barrier to infection; and (3) that changes to the stroma and endothelium are long-lasting. Lens-induced effects on corneal physiology can be minimized by fitting lenses that have greater oxygen transmissibility (are thinner), are more mobile, more frequently removed, and more regularly replaced. PMID- 3863809 TI - Extended-wear soft contact lenses for vision studies in monkeys. AB - The authors have designed and produced extended-wear contact lenses for rhesus monkeys. High-plus lenses to correct neonatal aphakia as well as lenses dyed black for use as occluders to treat amblyopia have been evaluated. Four infant monkeys fitted with soft lenses have successfully worn these extended-wear lenses almost continuously throughout their first year of life. These experiments demonstrate that rhesus monkeys tolerate extended-wear contact lenses well when these lenses are correctly designed, comfortably fitted, and their wear carefully monitored. Furthermore, the results demonstrate that usable levels of vision can be maintained in monocularly aphakic infant monkeys. Since similar methods are now used to treat children with monocular cataracts, our animal model using extended-wear contact lenses on young monkeys should facilitate new and clinically relevant amblyopia experiments. PMID- 3863811 TI - Pefloxacin in acute exacerbations of chronic bronchitis. AB - Forty-three patients admitted to hospital with acute purulent exacerbations of chronic bronchitis were treated with 400 mg pefloxacin twice daily for ten days. The first 20 patients were given the first dose of the drug as a 60 min intravenous infusion. Serum and sputum concentrations of pefloxacin were measured microbiologically at intervals on the first treatment day and the sputum was cultured before, during, and after the course of pefloxacin. Two patients died from unrelated causes during the follow-up and one refused to continue treatment. All strains of Haemophilus influenzae and Branhamella catarrhalis were eradicated at end-of-treatment but eight strains of Streptococcus pneumoniae and three of Pseudomonas aeruginosa were cultured and the sputum remained purulent despite the pefloxacin. Peak serum concentrations averaged approximately 4.5 mg/l after the infusion and 5 mg/l on oral administration, the corresponding sputum concentrations being 3.8 and 4.6 mg/l, respectively. MICs for H. influenzae were 0.06 mg/l, or less. Mode MICs for the pre- and post-treatment strains of Str. pneumoniae were 4 and 16 mg/l, and the corresponding values for Ps. aeruginosa were 2 and 16 mg/l. The poor results in pseudomonas and pneumococcal infections could largely be explained by the degree of resistance among these organisms. PMID- 3863810 TI - Analysis of HLA-DQ molecules with a monoclonal antibody detecting a DQ polymorphism absent from DQW1 homozygous cells. AB - We have produced a monoclonal antibody detecting an HLA class II determinant absent from DR1,2,W6, and W10 (DQW1) homozygous B lymphoblastoid cell lines (BLCL). The antibody, SFR16-PI.2, immunoprecipitates molecules with electrophoretic mobilities of DQ (DS/DC) molecules from DR7 homozygous cell lines. SFR16-PI.2 binds more sets of class II molecules from internally labeled DR7 homozygous cell membranes than from externally labeled extracts from the same cell line. Depletion of DR molecules from internally-labeled membranes indicates that SFR16-PI.2, in addition to reacting with DQ molecules, also reacts with an epitope on a biosynthetic intermediate of DR molecules, which is lost on the mature DR molecule. SFR16-PI.2-reactive molecules were examined on a DR5 homozygous cell line, where they could be compared to those isolated by two other monoclonal antibodies with DQ specificity, namely IVD12 and Leu-10. All three monoclonal antibodies isolated two sets of DQ molecules with varying degrees of affinity for one of the molecules. The serological and biochemical data presented suggest that SFR16-PI.2 detects the alternate alleles of the locus encoding DQW1. PMID- 3863812 TI - Central nervous system and testicular involvement in acute lymphoblastic leukaemia. PMID- 3863813 TI - Diauxic growth in Azotobacter vinelandii. AB - Azotobacter vinelandii exhibited diauxie when grown in a medium containing both acetate and glucose as carbon sources. Acetate was used as the primary carbon source during the acetate-glucose diauxie. Uptake of acetate was constitutively expressed during both diauxic phases of growth. Induction of the glucose uptake system was inhibited in the presence of acetate. Acetate was also the preferred growth substrate for A. vinelandii grown in a medium containing either fructose, maltose, xylitol, or mannitol. The tricarboxylic acid cycle intermediates citrate, isocitrate, and 2-oxoglutarate inhibited glucose utilization in cells grown in glucose medium containing these substrates, and diauxic growth was observed under these growth conditions. Temporal expression of isocitrate-lyase, ATPase, and nitrogenase was exhibited during acetate-glucose diauxie. PMID- 3863814 TI - Structures of sialylated fucosyl polylactosaminoglycans isolated from chronic myelogenous leukemia cells. AB - Polylactosaminoglycans were isolated from human chronic myelogenous leukemia cells and their structures were elucidated. The lactosaminoglycan saccharides were isolated by hydrazinolysis and fractionated by QAE-Sephadex. The structures of fractionated oligosaccharides were analyzed by fast atom bombardment-mass spectrometry and methylation before and after treatment with specific exoglycosidases, such as alpha 2----3 specific neuraminidase. Based on these experiments, the structures of sialyl polylactosaminoglycans of chronic myelogenous leukemia cells were found to contain the following unique structure which is absent in normal mature granulocytes: (formula; see text) In addition to this, chronic myelogenous leukemia polylactosaminoglycans can be distinguished from normal granulocyte polylactosaminoglycans by the following characteristics. Leukemic polylactosaminoglycans are (a) shorter, (b) more highly sialylated and contain fully sialylated, tetrasialosyl polylactosaminoglycans, (c) are less fucosylated at C-3 of N-acetylglucosamine of polylactosaminyl side chains, and (d) contain a significant amount of sialyl Lex, NeuNAc alpha 2----3Gal beta 1--- 4(Fuc alpha 1----3)GlcNAc beta 1----3, structure. These results indicate that chronic myelogenous leukemia cells express unique polylactosaminoglycan structures which are distinct from normal mature granulocytes. PMID- 3863815 TI - Metabolic fate of radiolabeled prostaglandin D2 in a normal human male volunteer. AB - 50 microCi of [3H]prostaglandin D2 tracer (100 Ci/mmol) was infused intravenously into a normal human male volunteer. 75% of the infused radioactivity was excreted into the urine within 5 h. This urine was added to urine obtained from two mastocytosis patients with marked overproduction of prostaglandin D2. Radiolabeled prostaglandin D2 urinary metabolites were chromatographically isolated and purified and subsequently identified by gas chromatography-mass spectrometry. 25 metabolites were identified. 23 of these compounds comprising 37% of the recovered radioactivity had prostaglandin F-ring structures, and only two metabolites comprising 2.7% of the recovered radioactivity retained the prostaglandin D-ring structure. The single most abundant metabolite identified was 9,11-dihydroxy-15-oxo-2,3,18,19-tetranorprost-5-ene-1,20-dioic acid which was isolated in a tricyclic form as a result of formation of a lower side chain hemiketal followed by lactonization of the terminal carboxyl and the hemiketal hydroxyl. Different isomeric forms of several prostaglandin F-ring metabolites were identified. An isomer of prostaglandin F2 alpha was also excreted intact into the urine as a metabolite of prostaglandin D2. 15 PGF-ring compounds were treated with n-butylboronic acid and 13 failed to form a boronate derivative, suggesting that the orientation of the hydroxyl group at C-11 in these 13 metabolites is beta. This study documents that prostaglandin D2 is metabolized to prostaglandin F-ring metabolites in vivo in humans. These results also bring into question the accuracy of quantifying prostaglandin F2 alpha metabolites as a specific index of endogenous prostaglandin F2 alpha biosynthesis, as well as quantifying urinary prostaglandin F2 alpha as an accurate index of renal production of prostaglandin F2 alpha. PMID- 3863816 TI - Comparison of HLA class I gene sequences. Derivation of locus-specific oligonucleotide probes specific for HLA-A, HLA-B, and HLA-C genes. AB - The major histocompatibility complex in man contains at least 20 class I genes. Included within this family are three closely linked loci with 11-47 codominant alleles that encode the classical transplantation antigens HLA-A, -B, and -C. The study of individual HLA-A, -B, and -C genes is complicated both by the high degree of sequence homology among all members of the class I gene family and by the high degree of polymorphism exhibited by HLA-A, -B, and -C genes. Identification of potential locus-specific regions suitable for use as unique probes has been limited by the small number of nucleotide sequences available for comparison. In the present study, the nucleotide sequences of two cDNA clones, designated HLA-4 and HLA-10, that encode previously unsequenced alleles of HLA-C and HLA-A genes, respectively, are compared with those of other class I genes. From these intergenic and interallelic comparisons, it was deduced that the nucleotide sequence encoding amino acids 291-299 of the transmembrane region showed sufficient divergence between loci and similarity between alleles, to be suitable for the generation of locus-specific probes. Synthetic oligonucleotides were generated and shown to be highly locus-specific in hybridization. These probes were used successfully for the quantitation of the relative amounts of mRNA transcribed in human liver from HLA-A, -B, and -C genes; they should greatly simplify future studies of restriction fragment length polymorphisms of HLA-A, B, and -C alleles as genetic markers of disease susceptibility. PMID- 3863817 TI - ADP-ribosylation of transducin by pertussis toxin. AB - Transducin, the guanyl nucleotide-binding regulatory protein of retinal rod outer segments that couples the photon receptor, rhodopsin, with the light-activated cGMP phosphodiesterase, can be resolved into two functional components, T alpha and T beta gamma. T alpha (39 kDa), which is [32P]ADP-ribosylated by pertussis toxin and [32P]NAD in rod outer segments and in purified transducin, was also labeled by the toxin after separation from T beta gamma (36 kDa and approximately 10 kDa); neither component of T beta gamma was a pertussis toxin substrate. Labeling of T alpha was enhanced by T beta gamma and was maximal at approximately 1:1 molar ratio of T alpha : T beta gamma. Limited proteolysis by trypsin of T alpha in the presence of guanyl-5'-yl imidodiphosphate (Gpp(NH)p) resulted in the sequential appearance of proteins of 38 and 32 kDa. The amino terminus of both 38 and 32-kDa proteins was leucine, whereas that of T alpha could not be identified and was assumed to be blocked. The 32-kDa peptide was not a pertussis toxin substrate. Labeling of the 38-kDa protein was poor and was not enhanced by T beta gamma. Trypsin treatment of [32P]ADP-ribosyl-T alpha produced a labeled 37-38-kDa doublet followed by appearance of radioactivity at the dye front. It appears, therefore, that, although the 38-kDa protein was poor toxin substrate, it contained the ADP-ribosylation site. Without rhodopsin, labeling of T alpha (in the presence of T beta gamma) was unaffected by Gpp(NH)p, guanosine 5'-O (thiotriphosphate) (GTP gamma S), GTP, GDP, and guanosine 5'-O-(thiodiphosphate) (GDP beta S) but was increased by ATP. When photolyzed rhodopsin and T beta gamma were present, Gpp(NH)p and GTP gamma S decreased [32P]ADP-ribosylation by pertussis toxin. Thus, pertussis toxin-catalyzed [32P]ADP-ribosylation of T alpha was affected by nucleotides, rhodopsin and light in addition to T beta gamma. The amino terminus of T alpha, while it does not contain the pertussis toxin ADP ribosylation site, appeared critical to its reactivity. PMID- 3863818 TI - Pertussis toxin-catalyzed ADP-ribosylation of transducin. Cysteine 347 is the ADP ribose acceptor site. AB - Pertussis toxin catalyzes the transfer of ADP-ribose from NAD to the guanine nucleotide-binding regulatory proteins Gi, Go, and transducin. Based on a partial amino acid sequence for a tryptic peptide of ADP-ribosylated transducin, asparagine had been characterized as the site of pertussis toxin-catalyzed ADP ribosylation. Subsequently, cDNA data for the alpha subunit of transducin indicated that the putative asparagine residue was, in fact, not present in the protein. To determine the amino acid that served as the ADP-ribose acceptor, radiolabel from [adenine-U-14C]NAD was incorporated, in the presence of pertussis toxin, into the alpha subunit of transducin (0.3 mol/mol). An ADP-ribosylated, tryptic peptide was purified and fully sequenced by automated Edman degradation. The amino acid sequence, Glu-Asn 343-Leu-Lys-Asp 346-X-Gly 348-Leu-Phe, corresponds to the cDNA sequence coding the carboxyl-terminal nonapeptide, Glu 342-Phe 350, which includes by cDNA sequence cysteine at position 347. Neither Asn 343 nor Asp 346 appeared to be modified; residue 347 adhered to the sequencing resin. Cysteine, the missing residue, was eluted from the sequencing resin with acetic acid along with 76% of the peptide-associated radioactivity, half of which, presumably ADP-ribosylcysteine, eluted from an anion exchange column between NAD and ADP-ribose; the other half had a retention time corresponding to 5'-AMP. We conclude that Cys 347 and not Asn 343 or Asp 346 is the site of pertusis toxin-catalyzed ADP-ribosylation in transducin. PMID- 3863819 TI - Hepatic transformation of prostaglandin D2 to a new prostanoid, 9 alpha,11 beta prostaglandin F2, that inhibits platelet aggregation and constricts blood vessels. AB - The metabolic transformation of tritium-labeled prostaglandin D2 ([3H]PGD2) was investigated in the isolated Tyrode's-perfused rabbit liver. One major product was isolated and identified in the perfusate as a new prostanoid. The structure of this metabolite was further confirmed by gas chromatography-mass spectrometry and chemical methods to be 9 alpha,11 beta,15-L-trihydroxyprosta-5-cis, 13-trans dienoic acid, namely (9 alpha,11 beta-PGF2). This new prostanoid was found to be an inhibitor of platelet aggregation and to cause constriction of canine coronary artery strips. These results suggested that on passage through the hepatic circulation exogenous PGD2 is converted to 9 alpha,11 beta-PGF2, the latter having a biological profile which differs from that of PGD2 and PGF2 alpha. PMID- 3863820 TI - Breast-feeding and fertility. PMID- 3863821 TI - Preliminary observations on the return of ovarian function among breast-feeding and post-partum non-breast-feeding women in a rural area of Mexico. PMID- 3863822 TI - Breast-feeding in Manila, Philippines: preliminary results from a longitudinal study. PMID- 3863823 TI - Breast-feeding and fertility among Philippine women: trends, mechanisms and impact. PMID- 3863824 TI - Lactation and birth spacing in highland New Guinea. PMID- 3863825 TI - Prolactin and the return of ovulation in breast-feeding women. PMID- 3863826 TI - Consequences of breast-feeding for mother and child. PMID- 3863827 TI - A study of returning fertility after childbirth and during lactation by measurement of urinary oestrogen and pregnanediol excretion and cervical mucus production. PMID- 3863828 TI - Contraception during lactation: considerations in advising the individual and in formulating programme guidelines. PMID- 3863829 TI - Risk factors of breast-feeding among Filipino women. PMID- 3863830 TI - The hospital environment and infant feeding: results from a five country study. PMID- 3863831 TI - Breast-feeding in the Philippines: the role of the health sector. PMID- 3863832 TI - Isotachophoresis as a useful tool for monitoring neurological complications of acute leukaemia in children. AB - Cerebrospinal fluid proteins from 42 children with acute lymphoblastic leukaemia were analysed by isotachophoresis. The isotachopherograms of cerebrospinal fluid taken from patients undergoing central nervous system prophylaxis with neurological complications showed an increase of several peaks (albumin, prealbumin, and an unidentified peak), and changes in the globulin zone, compared with those from patients who had completed central nervous system prophylaxis for at least six months. The most striking finding was that these alterations were not associated with any other biochemical changes in the cerebrospinal fluid, as assayed by routine analysis. Isotachophoresis may be useful in the monitoring of therapy in children affected with acute lymphoblastic leukaemia. PMID- 3863833 TI - Disk susceptibility of ofloxacin, a new carboxyquinolone. AB - Ofloxacin, a fluorinated carboxyquinolone, was tested against 485 clinical isolates, and the MICs and disk inhibitory zones were correlated. A critical zone of greater than or equal to 19 mm and an MIC of less than or equal to 2 micrograms/ml indicate susceptibility. An MIC of 4 micrograms/ml and a zone size of 16 to 18 mm is intermediate, and an MIC of greater than or equal to 8 micrograms/ml with a zone size of less than 15 mm indicates resistance. Alternatively, organisms inhibited by an MIC of less than or equal to 4 micrograms/ml with a critical zone diameter of greater than or equal to 15 mm could be considered susceptible. By either of these criteria, major errors in judging susceptibility or resistance are less than 1%. PMID- 3863834 TI - Congress looks at the evidence. PMID- 3863835 TI - Use of an X-linked human neutrophil marker to estimate timing of lyonization and size of the dividing stem cell pool. AB - In families with X-linked chronic granulomatous disease (CGD), heterozygous females have two stable populations of polymorphonuclear leukocytes (PMN) in their blood; one normal, the other, deficient in oxygen metabolism. The two types of PMN can be distinguished by the ability or lack of ability to reduce nitroblue tetrazolium dye. The variation in the percent normal PMN among 11 CGD heterozygotes was shown to follow a binomial distribution based on eight independent trials and a chance of success of 50%. This is consistent with the occurrence of X-chromosome inactivation (lyonization) when eight embryonic founder cells for the hematopoietic system are present. Serial determinations of the percent normal PMN in individual heterozygotes showed very limited variability (standard deviations ranged from 2.0% to 5.2%) most of which could be ascribed to experimental error. An estimate of the remaining variation (residual variance) was introduced into a well-known formula to calculate the appropriate number of pluripotent stem cells necessary to support hematopoiesis and a figure exceeding 400 was obtained. Thus, the data indicate that in humans there is a highly polyclonal system of hematopoiesis. PMID- 3863836 TI - Antimicrobial irrigation of deep pockets to supplement non-surgical periodontal therapy. II. Daily irrigation. AB - 106 sites with probing pocket depths 7 mm or greater from 14 patients were treated with plaque control instruction and 1 episode of root planing. Sites in each patient were either irrigated with 2% chlorhexidine or left as non-irrigated controls. Irrigation immediately followed root planing and was repeated daily, by the patient, for 24 weeks. Clinical measurements were made at 12 and 24 weeks, as were gingival washings for determining the number and % of spirochetes. Results at 24 weeks demonstrated that bleeding scores decreased from 91% to 9%; the % of spirochetes dropped from approximately 9% to less than 1%; probing pocket depths decreased from 7.5 to 4.5 mm, and probing attachment levels gained 1.1 to 1.4 mm. The chlorhexidine irrigated experimental group and the non-irrigated control group did not differ significantly in any of the studied parameters. Thus, daily patient-administered chlorhexidine irrigation of deep pockets did not augment the effects of non-surgical periodontal therapy. PMID- 3863837 TI - Subgingival spirochete and leukocyte counts as indicators of response to therapy. AB - The aim of this study was to determine whether changes in probing attachment levels are related to subgingival spirochete or leukocyte counts in periodontal pockets. Following initial clinical recordings and therapy consisting of oral hygiene instruction and root debridement, the probing attachment levels of proximal sites of 120 single-rooted teeth in 7 patients were measured every 3 months for 12 months. The measurements of each site were subjected to regression analysis, which determined whether the site was deteriorating, improving, or non changing. Subgingival washings were taken of 19 deteriorating, 22 improving, and 127 non-changing sites to determine the number and % of spirochetes and the number of leukocytes at each site. Improved probing attachment levels were associated with reduced numbers of spirochetes and leukocytes. However, the ranges of individual measurements of subgingival washing variables overlapped considerably between groups. Spirochete and leukocyte counts related better to the 12-month probing depths than to changes in probing attachment levels during the preceding 12 months. These findings suggest that none of the tested subgingival washing parameters are suitable indicators of changes in attachment levels on an individual site basis. PMID- 3863838 TI - Gram negative species associated with active destructive periodontal lesions. AB - Apical subgingival plaque samples were taken from 19 subjects exhibiting active destructive periodontal disease. The predominant cultivable Gram negative species from 50 active sites were compared to 69 inactive sites of comparable pocket depth and attachment level loss. Active disease sites were chosen which showed a significant loss of attachment within a two-month interval. Proportions of Gram negative rods were higher in active periodontal disease sites than in inactive sites. Species which were found to be significantly elevated only in active sites were Bacteroides intermedius, "fusiform" Bacteroides, Actinobacillus actinomycetemcomitans and Wolinella recta. Fusobacterium nucleatum, Capnocytophaga gingivalis and Eikenella corrodens were found in significantly increased proportions in active sites of some subjects and inactive sites of others. PMID- 3863839 TI - The effect of supragingival plaque control on the subgingival microflora. AB - The effect of plaque control on the apical microflora of deep periodontal pockets was studied. 8 subjects exhibiting signs of chronic periodontitis were chosen for the study, each subject having at least one pocket greater than 6 mm. These subjects were placed on a plaque control programme consisting of 3 visits, during which oral hygiene instructions were given. On two visits, the teeth of these subjects were scaled and polished. Bacteriological samples from the apex of a deep pockets from each subject were collected before the commencement of the plaque control programme and again at 8 and 16 weeks after the last scale and polish. No significant difference in the microbial flora was observed before and after plaque control, but marked fluctuation in bacterial composition was noted at the 3 samplings. It was concluded that supragingival plaque reduction was not sufficient to produce significant changes in the subgingival plaque composition of deep periodontal pockets. PMID- 3863840 TI - Regeneration of alveolar bone following surgical and non-surgical periodontal treatment. AB - The purpose of this investigation was to examine the regeneration of alveolar bone following surgical and non-surgical periodontal treatment. A total of 16 patients who had advanced periodontitis and demonstrated angular bony defects on radiographs participated in the study. After the initial examination, they received instruction in oral hygiene and had their teeth thoroughly scaled. When the individual patient at 2 succeeding appointments had plaque on less than 20% of the tooth surfaces, one maxillary and one mandibular quadrant was treated with the modified Widman flap procedure while one of the remaining quadrants was treated with the reverse bevel flap procedure. The last quadrant was treated with root planing under local anesthesia. None of these procedures included bone contouring. Following treatment, the patients were recalled every 2 weeks for professional tooth cleaning. Radiographs taken 12 months following treatment revealed that only minor changes in the bone level had occurred in areas with horizontal bone loss following the various treatment modalities. Following the modified Widman flap procedure, however, a statistically significant coronal regrowth of bone (0.5 mm) had occurred in angular bony defects. The majority of the angular bony defects persisted following all 3 treatment modalities. PMID- 3863841 TI - Healing after treatment of periodontal intraosseous defects. VI. Factors influencing the healing response. AB - 84 periodontal intraosseous defects treated with mucoperiosteal replaced flap surgery and citric acid root conditioning were used to study the relationships between various defect characteristics and the healing response as expressed by change of probing attachment level, change of probing bone level and residual probing depth. More gains in probing attachment and probing bone levels were observed in deep defects than in shallower lesions. Other defect characteristics showed weak or no correlations to defect fill. The findings of this study seem to indicate that the outcome of treatment of intraosseous defects may be difficult to predict based upon evaluation of defect characteristics. PMID- 3863842 TI - New attachment-reattachment following reconstructive periodontal surgery. AB - The present study was designed to evaluate if the conditions for reformation of a connective tissue attachment are less favorable on root surfaces which have lost their fibrous attachment because of periodontal disease than on root surfaces surgically deprived of their attachment apparatus. In each of 4 Green monkeys, 2 maxillary and 2 mandibular teeth were selected for experimentation. Periodontal breakdown was produced and allowed to progress to the mid-root level around one of the experimental teeth in both the maxilla and mandible by placing elastic ligatures around the neck of these teeth. 3 months after removal of the ligatures, the crown of the teeth was resected and the epithelium and the subjacent granulation tissue were removed. Using a diamond bur, circumferential defects similar to those obtained by the ligature induced destruction were then produced around the remaining 2 experimental teeth following resection of the crown. The root cementum on both groups of teeth was removed to the level of the reduced bone height. Finally, all roots were submerged to complete coverage by a mucosal flap. After 3 months of healing, the animals were sacrificed and the jaws removed and placed in fixative. After decalcification, histological sections of the experimental roots and their surrounding periodontal tissues were produced. No histological differences in the result of healing were discernible between the specimens of previously periodontitis-affected roots and roots with surgically created defects. New cementum with inserting collagen fibers had formed in the apical part of the instrumented surface in both groups of teeth.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863843 TI - The microbial morphotypes associated with periodontal health and adult periodontitis: composition and distribution. AB - Subgingival plaque samples were obtained from 162 sites in 27 adult periodontitis patients and 162 sites in 27 healthy patients using a standardized lavage technique. The distribution of 10 different microbial morphotypes was determined by darkfield microscopy. The lavage technique selectively samples the loosely adherent plaque at the base of the periodontal pocket and not the tooth associated, adherent plaque. This standardized technique permits quantitative comparisons of numerical density of morphotype composition at different sites, in addition to qualitative comparisons or relative proportions. There was a significant positive association between the numerical density of each morphotype within the non-adherent plaque and the number of sites at which the organism was detected in both healthy and diseased subjects. A previously undescribed darkfield morphotype, has been detected with this method. This morphotype, a small motile coccobacillus (S-MO-CB) has been found to be the numerically dominant species in both health and disease. This morphotype has been recovered in pure culture following passage through a 0.4 mu filter and includes organisms of the Wollinella and Campylobacter genus. Non-motile organisms comprised less than 1-2% of the sample from healthy and diseased sites. Motile forms, such as spirochetes, had a high frequency of detection in healthy individuals. Analysis of pooled plaque samples revealed that the prevalence of cocci and fusiforms was significantly elevated in patients with healthy periodontium, as compared to patients with adult periodontitis. In adult periodontitis patients, the frequency of occurrence of medium spirochetes, filaments and small nonmotile rods was significantly elevated in pooled plaque. Analysis of individual sites indicated that the proportion and numerical density of most morphotypes within the non adherent plaque were not significantly different in disease as compared to health. Disease is characterized by an increased % of small spirochetes and fusiforms at each site. At diseased sites which harbor small spirochetes, the numerical density is elevated four-fold, as compared to healthy sites which have small spirochetes. The numerical density of other morphotypes is not significantly different comparing healthy sites to diseased sites. Thus, the increase in the % of small spirochetes in disease in due to a site-localized four fold increase in numerical density within the non-adherent plaque. PMID- 3863844 TI - Statistical transformations of indices of gingivitis measured non-invasively. AB - An index (PMGI) that combines the Massler-Schour (PMA) and Loe-Silness (GI) indices for non-invasive scoring of gingivitis was applied in 2 independent comparative clinical studies. 4 statistical transformations of the scores of individual papillary and marginal units were analyzed: the whole-mouth mean, its square root, the proportion of units judged to be inflamed, and its arc sin transformation. According to the criteria of how closely the transformations produced approximately normal distributions, and of how successful they were in detecting treatment differences, the square root transformation performed the best. PMID- 3863845 TI - A clinical procedure for determining the proficiency of gingivitis examiners. AB - The purpose of the present study was to evaluate a clinical procedure for determining the proficiency of gingivitis examiners. After 4 examiner trainees were instructed by and participated in practice examination sessions with a senior examiner, the 5 examiners participated in a 2-group clinical study which employed appropriately timed-staggered dental prophylaxes to create a gingivitis treatment effect between the 2 groups. The 1st group received dental prophylaxes 30 days before the 2nd group. 10 days after the 2nd group had received dental prophylaxes, both groups were examined independently by all 5 examiners. Baseline examinations had been made on all subjects by all 5 examiners independently to serve as a covariable in the statistical analyses. During this clinical exercise, the examiners did not know at what time prophylaxes had been given nor did they have access to the previous examination records. The expected presence of a treatment effect, as confirmed by the senior examiner, was found by all of the examiner trainees in this exercise. The treatment effect for all examiners was statistically significant. PMID- 3863846 TI - Effect of age on healing following periodontal therapy. AB - The present investigation was performed in order to analyze the effect of age on healing of the periodontal tissues following treatment. The patients included in the present analysis consisted of 2 different samples. One group of 62 patients (sample A) was examined and treated between 1980 and 1982. 13 of these subjects were less than 40 years of age, 26 subjects were 40-49 years of age and 23 subjects were greater than 49 years old. The patients were subjected to periodontal surgery using the modified Widman flap procedure. During the active phase of treatment and for the subsequent 6 months of healing, all 62 patients were subjected to professional tooth cleaning. Instruction in proper oral hygiene measures was repeated and scaling was carried out when indicated. Sample B consisted of 21 subjects treated for advanced periodontal disease in 1969. Six of these patients were between 26 and 29 years of age at the start of treatment and 15 were at least 60 years old. The criterion for acceptance for the study in 1969 was that the patient should have lost 50% or more of his/her periodontal tissues. Following an initial examination, all patients were subjected to scaling and root planing and surgical elimination of pathologically deepened pockets. After the termination of active treatment, the patients were placed in a maintenance care program which included recall appointments every 3-6 months. Once a year after the completion of active treatment, all patients in this sample were examined regarding probing depths and clinical attachment levels. The findings from the present retrospective analyses failed to demonstrate that the age of patients with moderately advanced or advanced forms of periodontal tissue breakdown had an influence on the results of periodontal therapy. If anything, the younger patients appeared to heal with a higher frequency of shallow pockets and more gain of probing attachment than older patients. PMID- 3863847 TI - A comparative study of effectiveness in plaque removal by Super Floss and waxed dental floss. AB - The effectiveness of Super Floss and waxed dental floss as proximal surface cleansing agents was compared in 34 subjects. Each subject used 1 agent twice daily for 2 weeks followed by the other agent used with the same frequency and for the same period. The order in which the agents were used was selected at random. Plaque was stained by erythrosin, and a plaque index of Wolffe used. Super Floss was found to be superior to waxed dental floss in removing proximal plaque, but neither was 100% effective. Some plaque was present in 49.9% of the proximal surfaces when Super Floss had been used and on 54.7% when the waxed dental floss had been used. Both agents cleaned distal surfaces better than mesial surfaces, proximal surfaces of anterior teeth more effectively than those of posterior teeth, the coronal half of the proximal surfaces better than the apical half and the facial half more efficiently than the lingual half. No differences were found between maxillary teeth and mandibular teeth. Subjects used more lengths of Super Floss than of waxed dental floss, indicating its relative 'brittleness'. However, the majority of subjects preferred Super Floss, mainly because it was thicker and felt more abrasive. PMID- 3863848 TI - Exercise-induced bronchoconstriction related to isotretinoin therapy. PMID- 3863849 TI - Psychosocial characteristics of adolescents who refuse cancer treatment. PMID- 3863850 TI - Ethical problems in dental practice. PMID- 3863851 TI - Frustration and values. PMID- 3863852 TI - The candid views of Burt Press, an interview with the former President of the American Dental Association by the editor, Keith P. Blair. PMID- 3863854 TI - Copayment coordination. PMID- 3863853 TI - The identification of anorexia nervosa and bulimia on student health forms. PMID- 3863855 TI - Evaluation of an alphaprodine-hydroxyzine combination as a sedative agent in the treatment of the pediatric dental patient. AB - This investigation proposed and evaluated a submucosally administered standard dose drug combination containing .6 mgm/kgm alphaprodine hydrochloride and .3 mgm/kgm hydroxyzine hydrochloride, in conjunction with nitrous oxide, oxygen, and lidocaine with epinephrine, in the sedation and treatment of uncooperative pediatric dental patients. Observations from this study include: The technique was successful in attaining a desirable, conscious sedation level that was characterized by rapid onset, maintenance throughout treatment, and rapid reversibility with naloxone and 100% oxygen. The protective airway reflexes remained intact during the procedures. Vital signs remained fairly constant throughout the treatment. Respiratory rate was slightly depressed during the sedation, but hemoglobin oxygen saturation levels remained constant. There were no incidences of respiratory depression, hypoxia, or apnea either during or after treatment, and no emergency medical or resuscitative efforts were necessary. Twenty-four hours after the appointment, few patients complained of the experience and more than half stated that they looked forward to returning. In view of these findings, the techniques and drug combination described in this investigation appear to provide a safe and effective means for the sedation and treatment of uncooperative pediatric dental patients. It should be emphasized, however, that the dentist using these methods should have a thorough knowledge of the agents involved, the ability to monitor patients and recognize possible adverse reactions, and the capacity to respond to any emergency situations should they arise. Consequently, only practitioners who have had extensive training and experience in all forms of anesthesia, especially pediatric anesthesia, should consider the use of these agents in their practices. It should be emphasized further that the agents and techniques should be used only for conscious sedation, the light level of sedation during which the patient retains the ability present before sedation to independently maintain an airway and respond appropriately to verbal command, and not for any deeper forms of anesthesia. PMID- 3863856 TI - Psychophysiological responses to dental injections. AB - Dentists frequently change local anesthetic formulations on the basis of a patient's experience of adverse effects. Frequently, less effective anesthetics are selected because a lack of understanding exists regarding the nature of untoward events. This may exacerbate the problem. Allergic reactions are overreported, whereas fear responses frequently are unrecognized. This article outlines the clinical problem of adverse reactions to local anesthetics in dental practice. Clinical recommendations based on proper diagnosis are provided to prevent recurrence of the problem. PMID- 3863857 TI - Tooth root growth impairment after mantle radiation in long-term survivors of Hodgkin's disease. AB - The tooth root growth impairment that resulted from 35 to 37 Gy mantle port radiation in 47 long-term survivors of childhood Hodgkin's disease was quantified and related to specific age groups and categories of teeth. Root measurements of the mandibular permanent canines, first and second premolars, and first and second molars were made from sequential panoramic radiographs taken at the time of radiation therapy and after the closure of root apexes. The severity of root growth impairment was greatest in patients who received radiation during the early stages of odontogenesis. With later stages of odontogenesis, and as the age increased at the time of treatment, less impairment occurred. The potential difficulties of using repeated panoramic radiographs to assess tooth lengths in longitudinal studies also were discussed. PMID- 3863858 TI - Fetal alcohol syndrome: review of literature and report of cases. PMID- 3863859 TI - Interim obturation of palatal perforations to facilitate routine dental care. AB - Routine preventive or restorative dental procedures (or both) may be compromised, deferred, or even denied to patients with exceptional problems that complicate treatment. Perforations of the hard palate require temporary obturation while the patient receives routine dental care such as prophylaxis, periodontic treatment, restorative dentistry, and repair or modification of an existing prosthesis. Temporary obturation, using an adhesive peristomal covering has been a helpful adjunct to prevent the dehydrating of a patient's nasal tissues, to facilitate the patient's speech and deglutition, and to maintain the patient's psychological well-being while the prosthesis is out of the mouth. An effective, comfortable, and economical method of interim obturation has been described. PMID- 3863860 TI - A new, patient-administered medical history developed for dentistry. PMID- 3863861 TI - Local versus general anesthesia: a study of pulpal response in the treatment of cariously exposed teeth. PMID- 3863862 TI - Predicting levels of preventive dental behaviors. AB - This study examined the value of SLT as a model for predicting levels of dental hygiene behaviors. The brushing and flossing frequency of 131 adults was measured both retrospectively (via questionnaire) and prospectively (via self-monitoring records). Two types of SLT variables--expectations and environmental influences- were reliably related to dental hygiene behaviors. Such variables (for example, self-efficacy expectations and the dental behaviors of significant others) accounted for up to 38% of the variance in brushing frequency and 33% of the variance in flossing frequency. Overall, a SLT model appears to hold promise for identifying psychosocial variables that are related to dental hygiene behaviors. The findings suggest that educational programs intended to increase the frequency of such behaviors should focus on increasing self-efficacy, reducing structural and life-style barriers to adherence, and involving significant others in educational efforts. PMID- 3863863 TI - A special technique to retrieve images from a dark cephalogram. AB - A high-density, unreadable cephalogram was made readable by duplicating it at 7 to 10 times the usual ultraviolet light exposure. Soft tissue images were retrieved from a readable cephalogram of normal density by duplicating it at 12 to 20 times the usual ultraviolet light exposure. However, the hard tissue images disappeared in the duplicating process. A correctly made duplicate radiograph had a higher image resolution than the image resolution of the original corresponding high-density radiograph. The difference was not significant clinically. PMID- 3863864 TI - Diffuse mandibular enlargement. AB - Paget's disease of the jaw has the following characteristics: slow progression of jaw enlargement; bilateral jaw involvement; often polyostotic, but not generalized skeletal disease; diffuse, irregular radiopaque areas of the jaw; elevated serum alkaline phosphatase level; and a biopsy specimen showing thick, irregular bone trabeculae with a mosaic pattern of reversal lines and numerous osteoblasts and osteoclasts in a fibrovascular stroma. Management of a patient with Paget's disease of bone usually is carried out by treating the symptoms of the disease as they arise. Bone can be removed for esthetic reasons when needed. PMID- 3863865 TI - Studies on serum CA125 levels in pregnant women. AB - To confirm the change in serum CA 125 levels in cases of pregnancy, we measured serum CA 125 levels in 234 normal pregnant women, 40 postpartum women and 14 abnormal pregnant women (12 of IUFD and 2 of H. mole), using an RIA kit. The mean CA 125 level (+/- S.D.) and positive ratio (greater than 34U/ml) for pregnant women at 4-11 weeks of gestation were 65.0 +/- 77.3 U/ml and 64.6%, respectively, being the highest values in all the groups. On the contrary, those for pregnant women at 12-23 weeks of gestation were 22.3 +/- 10.6 U/ml and 12.7%, respectively, the lowest in all gestational groups. Changes in serum CA 125 levels in normal pregnant women showed a trend toward decrease, as gestation advanced. But the CA 125 levels for women at postpartum showed a slight trend toward increase. The mean CA 125 level (+/- S.D.) for 12 patients with IUFD was 392.5 +/- 275.8 U/ml and that for 2 patients with H. mole was 65.0 +/- 15.0 U/ml. Serum CA 125 levels for patients with IUFD were higher than that in cases of normal pregnancy. When utilizing CA 125 as a marker for ovarian cancer, the influence of pregnancy must be considered. And it indicates that CA 125 can be used as an aid to the diagnosis of IUFD in serous cases. PMID- 3863866 TI - [Tumor prosthesis for limb salvage in malignant bone tumor of the extremities]. PMID- 3863868 TI - [Effect of intraoral surgical trauma on the catecholamine depletion rate in the brain and adrenal medulla in rats]. PMID- 3863867 TI - [Glycogen storage disease associated with glycogen deposition in skeletal and heart muscles with low muscle phosphorylase activity]. PMID- 3863869 TI - The growth characteristics of multilocular ameloblastomas. A histological investigation with some inferences with regard to operative procedures. AB - The growth characteristics of multilocular ameloblastomas and the reaction of the surrounding tissues were studied by means of a histological examination of 31 surgical specimens. Infiltration of spongy bone was observed frequently whereas there was little tendency to invade cortical bone. The periosteum largely prevented extension of the tumour. However, in the region of the mucosa overlying the alveolar process apparent encapsulation was absent. There were indications that the infiltrative growth pattern exhibited by an ameloblastoma within spongy bone was due to secondary enclosure of tumour tissue by remodelled bone. PMID- 3863870 TI - Recurrence of carcinoma of the oral cavity, oropharynx and maxillary sinus after radical neck dissection. AB - Cervical recurrence was studied in 63 patients who had undergone radical neck dissection for the treatment of carcinoma of the oral cavity, oropharynx and maxillary sinus. Over the whole series, recurrence occurred in 17 patients (27%). The rate of recurrence did not decrease in patients who remained free of carcinoma at the primary site, but was significantly lower in patients in whom elective neck dissection was performed than in those who were treated by therapeutic or secondary neck dissection. With the exception of two patients, cervical recurrence was associated with the presence of metastatic lymph nodes. Although the rate of recurrence was not affected by the number of metastatic lymph nodes, it was very high (80%) in patients having metastatic lymph nodes with histological evidence of extra-nodal spread. The results indicate that elective treatment by irradiation or surgery may be needed to reduce cervical recurrence because of a high tendency of carcinoma of the oral cavity and adjacent regions to metastasize. PMID- 3863871 TI - Central odontogenic fibroma. A case report. AB - A case of central odontogenic fibroma is reported. The clinical, radiological and pathological features are discussed. It is of particular interest because of its maxillary location and the severe external root resorption associated with the tumour. PMID- 3863872 TI - Transconjunctival resection of an orbital dermoid tumour. AB - An unusual case of an orbital dermoid tumour containing a well differentiated tooth-like structure is documented. A previously unreported surgical approach to a maxillofacial dermoid tumour is introduced. Using a conjunctival incision, orbital floor exploration was undertaken with excellent visibility and access. A large dermoid tumour was removed without the need for an external skin incision. The surgical approach and pathology of this unusual lesion are reviewed. PMID- 3863873 TI - Periapical response to an apical plug of dentin filings intentionally placed after root canal overinstrumentation. PMID- 3863874 TI - A radioimmunoassay determination of the concentrations of prostaglandins E2 and F2alpha in painful and asymptomatic human dental pulps. PMID- 3863875 TI - Endodontic therapy involving fused mandibular second and third molars. PMID- 3863876 TI - Mandibular first molars with six root canals. PMID- 3863877 TI - Two root canals in a maxillary lateral incisor. PMID- 3863878 TI - Membranes replace irradiated blast cells as growth requirement for leukemic blast progenitors in suspension culture. AB - The blast cells of acute myeloblastic leukemia (AML) may be considered as a renewal population, maintained by blast stem cells capable of both self-renewal and the generation of progeny with reduced or absent proliferative potential. Blast progenitor renewal is manifested in suspension culture by an exponential increase in clonogenic cells. This growth requires that two conditions be met: first, the cultures must contain growth factors in media conditioned either by phytohemagglutinin (PHA)-stimulated mononuclear leukocytes (PHA-LCM), or by cells of the continuous bladder carcinoma line HTB9 (HTB9-CM). Second, the cell density must be maintained at 10(6) blasts/ml; this may be achieved by adding irradiated cells to smaller numbers of intact blasts. We are concerned with the mechanism of the feeding function. We present evidence that (a) cell-cell contact is required. (b) Blasts are heterogeneous in respect to their capacity to support growth. (c) Fractions containing membranes from blast cells will substitute for intact cells in promoting the generation of new blast progenitors in culture. (d) This membrane function may be specific for AML blasts, since membranes from blasts of lymphoblastic leukemia or normal marrow cells were inactive. PMID- 3863879 TI - Susceptibility of BALB/c mice carrying various DBA/2 genes to development of Friend murine leukemia virus-induced erythroleukemia. AB - Using a series of BALB/c mice congenic for various DBA/2 genes, we were able to establish that DBA/2 mice carry a gene on chromosome 5, at or near the Rmcfr locus, that plays a major role in resistance to early erythroleukemia induced by injection of Friend murine leukemia virus (F-MuLV) into newborn mice. The fact that this gene controls the replication of mink cell focus-inducing (MCF) viruses strengthens the case for these viruses playing a crucial role in the development of erythroleukemia, since failure to replicate MCF viruses results in resistance to early erythroleukemia. The expression of the Rmcfr gene is correlated with the constitutive expression of an MCF virus-related envelope glycoprotein that apparently blocks the receptor for MCF viruses, preventing their spread. Thus, the Rmcfr gene is either a structural gene for this unique protein, which can block the receptor for MCF viruses, or is a regulatory gene that controls expression of such a structural gene. Although the Rmcfr gene is clearly involved in resistance to the early erythroleukemia induced by F-MuLV, it appears to have no effect on the late myeloid, lymphoid or erythroid diseases that appear in DBA/2 and other strains of mice after injection of F-MuLV, consistent with data indicating that replication of MCF viruses is not required for the development of these late diseases. Our studies with congenic and backcross mice also indicate that, in addition to the Rmcfr gene, other genes of DBA/2 origin may contribute to resistance to F-MuLV-induced early erythroleukemia by mechanisms other than blocking the replication of MCF viruses. PMID- 3863880 TI - Effects of pH on in vitro ovulation of goldfish (Carassius auratus) oocytes. AB - The in vitro effects of pH on goldfish (Carassius auratus) ovulation were investigated. Final oocyte maturation and follicular detachment were induced in vivo in gravid goldfish by HCG injections and elevated holding temperatures. Females were biopsied to determine the time of germinal vesicle breakdown and when oocytes should be removed for in vitro incubations. Prior to ovulation, the ovaries were removed, dissected and mature intrafollicular oocytes were incubated in media of varying pH (7.3-8.9). There was a significant increase in ovulation as the pH of the incubation increased and this ovulation could be blocked by indomethacin. Indomethacin did not inhibit the actual mechanism of oocyte expulsion since exogenous PGF2 alpha induced ovulation in indomethacin blocked incubates. Increased pH did not increase the ovulatory response observed with exogenous PGF2 alpha. The combined results suggest that an increase in incubation pH stimulates prostaglandin synthesis that, in turn, stimulates ovulation. PMID- 3863881 TI - Studies of cardiac hemodynamics by pulsed Doppler echocardiography. PMID- 3863882 TI - Surgical treatment of primary cardiac tumors. PMID- 3863883 TI - Surgical management of congenital coronary artery fistula. PMID- 3863884 TI - Rapid spectrophotometric method for quantitation of acetaminophen in serum. PMID- 3863885 TI - [Changes of serum myoglobin levels in thyroid diseases]. PMID- 3863886 TI - Study on the middle molecules from uremic serum on phagocytic activity of granulocytes. PMID- 3863887 TI - [Prophylactic efficacy of lithium in recurrent bipolar affective disorders]. PMID- 3863888 TI - Fine needle aspiration cytology of breast tumors. PMID- 3863889 TI - Prenatal diagnosis of congenital heart disease by real-time sonography--a case report. PMID- 3863890 TI - A case of primary atypical pneumonia complicated with severe thrombocytopenia. PMID- 3863891 TI - Ruptured aneurysm of the sinus of Valsalva with pulmonic valve endocarditis: unusual pulmonary wedge pulse traces in a case. PMID- 3863892 TI - [Marginal leakage using dyes in various temporary cements]. PMID- 3863893 TI - Neuropathy and myopathy in two patients with anorexia and bulimia nervosa. AB - Two adolescent patients with eating disorders and severe weight loss presented with neuromyopathy. The first was female and had a twenty months' history of bulimia nervosa with weight loss and episodic gorging and vomiting. The second was male with a two-year history of anorexia nervosa characterised by vegetarianism and increasing food restriction. Both had severe wasting and asymmetrical weakness of proximal limb muscles. The first patient deteriorated on refeeding and became temporarily paralysed. Both had a purpuric rash and haematological abnormalities. They made a complete recovery on a mixed diet: vitamin supplements were given to the first but not to the second patient. PMID- 3863894 TI - Acute lymphoblastic leukemia in infants less than one year of age: a cumulative experience of the Children's Cancer Study Group. AB - A retrospective review of all 115 infants less than 1 year of age with acute lymphoblastic leukemia (ALL) entered on a consecutive series of recent Children's Cancer Study Group (CCSG) leukemia protocols was undertaken to examine in detail the outcome and clinical course of a large group of similarly treated infants. In comparison to the 4,392 children older than 1 year, entered on the same studies, infants had a significantly (P = .0001) increased incidence of leukocytosis, hepatosplenomegaly, meningeal leukemia at presentation, hypogammaglobulinemia, and failure to achieve complete remission (CR) status by day 14 of induction therapy. In contrast, lymphadenopathy, non-L1 French-American-British (FAB) morphology, mediastinal mass, and T cell leukemia were not more frequently observed. Ninety percent of these infants successfully completed the induction phase of therapy. With a median follow-up of 35 months, life table estimate of disease-free survival is only 23% at 4 years. Identical disease-free survival rates for infants were observed in each of the individual studies reviewed. Excessive toxicity resulting in limitation of therapy delivered was not a causative factor for the disappointing outcome of these patients. Rather, early disease recurrence, characterized by bone marrow relapse (55%) and CNS (22%) relapse, was the major factor responsible for the extremely poor prognosis of this patient group. Identical CNS relapse rates were observed in those patients who received cranial irradiation as part of CNS prophylaxis (21.8%) and in those patients who did not receive cranial radiotherapy (24%). Results of salvage therapy for patients who experienced systemic or extramedullary relapse were dismal. Debilitating neuropsychologic sequellae, presumably related to CNS irradiation, have been observed in 50% of the small number of long-term survivors. Infants less than 1 year of age with ALL present with a constellation of features which predict a poor outcome and constitute the group of children with ALL at greatest risk for treatment failure. PMID- 3863895 TI - Heterogeneity in the specific activity and methotrexate sensitivity of dihydrofolate reductase from blast cells of acute myelogenous leukemia patients. AB - Dihydrofolate reductase activity was found to be highly heterogeneous in terms of its specific activity and methotrexate sensitivity in the blast cells of patients with acute myelogenous leukemia. None of the patients had previously been treated with methotrexate (MTX). The blast cells of four of 12 patients studied contained methotrexate-insensitive forms of dihydrofolate reductase, and the blast cells of three (distinct from the four mentioned previously) of the 12 had significantly higher dihydrofolate reductase activities than the rest. The presence of MTX insensitive dihydrofolate reductases and high levels of enzyme activity represent intrinsic mechanisms of resistance and may explain the apparent clinical resistance of acute myelogenous leukemia to methotrexate. PMID- 3863896 TI - Increasing the operative experience of oral and maxillofacial surgeons. PMID- 3863897 TI - Clinical assessment of etomidate for outpatient general anesthesia: a preliminary evaluation. AB - Etomidate, a nonnarcotic, nonbarbiturate hypnotic agent, was assessed in a group of 20 patients requiring general anesthesia for outpatient oral surgical procedures. Changes in mean blood pressure, heart rate, and transcutaneous oxygen tension (PtcO2) were examined following the intravenous administration of etomidate for the induction and maintenance of general anesthesia. Clinical evidence of pain on injection, myoclonic muscle activity, apnea, nausea, and emesis were documented. A postoperative questionnaire evaluated levels of amnesia and acceptance of the drug by the patient and surgeon. No significant (P less than 0.05) change in PtcO2 occurred during etomidate infusion; however, a statistically significant but clinically insignificant change did occur in mean blood pressure and heart rate. Although myoclonic muscle activity, pain on injection, and nausea and vomiting were documented, the subjective evaluation of this agent by patient and surgeon was favorable. PMID- 3863898 TI - Melanin pigmentation in a mucoepidermoid tumor of a minor salivary gland. AB - A low-grade mucoepidermoid tumor rich in melanin has been reported. According to the collective personal experience of the authors and a literature review, such lesions are thought to be rare. It is not anticipated that melanocytic participation will alter the prognosis; however, only long-term followup and reports of any similar lesions of salivary gland will assist in clarifying the nature and significance of this lesion. PMID- 3863899 TI - Simultaneous occurrence of dermoid and heterotopic intestinal cysts in the floor of the mouth of a newborn. AB - Congenital cysts of the floor of the mouth are rare. The simultaneous appearance in a newborn of two different types of epithelial-lined cysts is reported. It is the first such case to be reported in the literature. PMID- 3863900 TI - False median cleft. PMID- 3863901 TI - Squamous odontogenic tumor related to an unerupted lower canine. AB - A new case of squamous odontogenic tumor (SOT) is presented. This is the seventeenth case of SOT to be reported and the first reported case related to a lower unerupted canine. A review of the literature reveals the extreme variability of the clinical and radiologic features of this tumor. Conversely, the microscopic characteristics of SOT are clearly defined: numerous islands of benign squamous epithelium scattered in an apparently mature connective tissue, absence of peripheral columnar cells with palisading nuclei, and absence of stellate reticulum. Keratin pearl formation, intraepithelial microcyst formation, and calcification are present to a variable extent. A circular arrangement of fibroblasts and fibrous condensation and/or hyalinization are observed around some epithelial islands, suggesting a reaction of the connective tissue to the epithelial proliferation. The observation of small epithelial islands near the apical surface of the retained tooth supports the theory that the tumor originates from Malassez's rests. The treatment of choice seems to be conservative, with thorough enucleation, but it should be borne in mind that multifocal cases have been described. PMID- 3863902 TI - An atypical solitary bone cyst. PMID- 3863903 TI - Malignant hyperthermia in a patient receiving nitrous oxide. AB - A patient who had malignant hyperthermia that apparently was triggered by nitrous oxide anesthesia even though he was premedicated with dantrolene sodium was successfully managed on a separate occasion using dantrolene without nitrous oxide. PMID- 3863904 TI - Median labiomandibular glossotomy for access to the cervical spine. PMID- 3863905 TI - Treatment of maxillary deficiency by a Le Fort I downsliding technique. AB - The treatment of patients with vertical maxillary deficiency by a Le Fort I downsliding technique where the maxilla is moved forward and downward on a planned angulated osteotomy cut, is discussed and the results in nine patients who were treated using this method are reported. PMID- 3863907 TI - Clitorism at presentation of acute nonlymphocytic leukemia. PMID- 3863906 TI - Congenital hypokalemia with hypercalciuria in preterm infants: a hyperprostaglandinuric tubular syndrome different from Bartter syndrome. AB - A congenital hypokalemic tubular disorder is described with many features resembling Bartter syndrome. Additional features include prenatal onset with polyhydramnios and premature labor; failure to thrive; episodes of fever, vomiting, diarrhea, and renal electrolyte and water wastage; hypercalciuria; nephrocalcinosis; and osteopenia. Unlike Bartter syndrome, there is no defect in tubular reabsorption of chloride. Urinary levels of prostaglandin E2 and 7 alpha hydroxy-5,11-diketotetranorprosta-1,16-dioic acid are selectively elevated, indicating marked stimulation of renal and systemic PGE2 production. Chronic suppression of PGE2 activity by indomethacin corrects most of the abnormalities, and there is an immediate decompensation of the disease on indomethacin withdrawal. We conclude that these preterm infants have a distinct variety of hypokalemic tubular disorders rather than a variant of Bartter syndrome, because renal and systemic hyperprostaglandinism ranks high in the pathogenic chain of events, and the suppression of PGE2 hyperactivity is associated with significant improvement in the development (and probably in the prognosis) of the affected children. PMID- 3863908 TI - Evidence for a junctional epithelial attachment to ceramic dental implants. A transmission electron microscopic study. AB - The interface of the crevicular gingiva with the surface of a dental implant is a critical zone representing the potential biological seal which protects the underlying bone and soft tissue-supporting mechanisms from destructive extraneous substances. Ultrastructural examination of regenerated junctional epithelial cells interfacing surgically placed endosteal dental implants, comprised of alpha alumina oxide ceramic in single crystalline form, exhibited an external basal lamina and linear body located between the external surface epithelial cell and the implant. In addition, hemidesmosomes were located at intervals along the outer junctional epithelial plasma membrane. The component substructures of the basal lamina and the hemidesmosomes were similar to those seen interfacing natural teeth. The linear body was an electron-dense structure between the lamina densa and the inert biomaterial. This study provides ultrastructural evidence for the presence of an attachment complex between gingiva and aluminum oxide implants which is analogous to that seen around natural teeth. These data support concept that a viable biological seal can develop around endosteal dental implants and provide support for satisfactory clinical service. PMID- 3863909 TI - The incidence and severity of complications and pain following periodontal surgery. AB - This study examines the incidence and severity of postoperative complications and pain in 304 consecutive periodontal surgical cases. Comparisons were made between plastic soft tissue surgery, osseous surgery and pure mucogingival procedures. Multivariable analysis was used to ascertain significant associations of numerous factors to complications and pain. Postoperative complications were rated as moderate or severe in only 5.5% of the cases. Although the total postoperative complications were minimal, regression analysis revealed osseous surgery to be three times more likely than pure mucogingival surgery to cause complications of bleeding, infection, swelling or adverse tissue changes. Minimal or no postoperative pain was reported by 51.3% of the patients. Pure mucogingival surgery was significantly related to pain and was 3.5 times more likely to cause pain than osseous surgery and 6 times more likely than plastic soft tissue surgery. The duration of surgery was statistically significant for both complications and pain. The overall results of the study indicate the risks of undergoing periodontal surgery, in terms of postoperative complications and pain, are minimal. PMID- 3863910 TI - Clinical and laboratory studies of a family with a high prevalence of juvenile periodontitis. AB - The form of periodontitis with onset at puberty and affecting predominantly the first molars and incisors is called juvenile periodontitis (JP). The disease has been the object of intense study because from its analysis may come insights into understanding other, more common, forms of periodontitis. We recently had the opportunity to study an unusual family in which both parents developed JP in their teens. We did clinical examinations, measured leukocyte chemotaxis, analyzed the pocket microflora, looked for serum antibodies against a large panel of putative periodontal pathogens and correlated the results. The couple had two affected and two unaffected children. One of the unaffected children was not available for study. Neutrophil chemotaxis was abnormal in both parents and in the two affected children, but not in the unaffected child. Actinobacillus actinomycetemcomitans accounted for 17.5% of the pocket flora isolated from one affected child and 2.5% of that from the unaffected child, but was not detected in the remaining family members. Antibodies specific for A. actinomycetemcomitans, Hemophilus aphrophilus and Eikenella corrodens were present in the serum of both affected children and for Capnocytophaga sputigena and C. ochracea in the father, but no antibodies directed against any of the species studied were found in the mother and the unaffected child. The distribution of disease in this family was more compatible with an X-linked dominant than with an autosomal recessive mode of inheritance. The correlations among presence or absence of disease, abnormal neutrophil chemotaxis and presence of serum antibodies reacting with A. actinomycetemcomitans were excellent.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863911 TI - Phagocytic cells in periodontal defense. Periodontal status of patients with chronic granulomatous disease of childhood. AB - Both qualitative and quantitative neutrophil abnormalities have been associated with severe forms of periodontitis. Defects in chemotaxis, phagocytosis and bacterial killing have been reported among both peripheral blood and gingival neutrophils harvested from patients with juvenile and rapidly progressive periodontitis. Chronic granulomatous disease of childhood (CGD) is a rare, inherited disorder associated with the occurrence of severe, life-threatening, suppurative infections of skin, liver, lymph nodes and other organs. Neutrophils and monocytes from individuals with CGD lack enzymes necessary for the production of oxygen reduction/products such as H2O2 and superoxide anion, and therefore are unable to kill many species of bacteria and fungi. However, no detailed study of the periodontium of these patients has been undertaken. Accordingly, five patients whose ages ranged from 17 to 32 years were included in this study. An additional (sixth) patient was included based on complete dental records. Neutrophils from all patients demonstrated defective O2 metabolism, and all patients had histories of chronic recurrent abscesses consistent with CGD. All patients were receiving antibiotic prophylaxis. Several patients had ulcerative lesions of the oral cavity of unknown etiology. Examination of the periodontium revealed that three patients had gingivitis, one had localized early periodontitis, and one had generalized early-to-moderate periodontitis. The severity of periodontal disease was consistent with patient age and local etiologic factors. No patients had evidence of juvenile, severe or rapidly progressing disease in spite of their leukocyte defects. These findings suggest the following possibilities.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863912 TI - The presence of bacteria within the oral epithelium in periodontal disease. I. A scanning and transmission electron microscopic study. AB - The presence of bacteria within the gingival oral epithelium and adjacent connective tissue in cases of periodontitis and localized juvenile periodontitis have been described using scanning and transmission electron microscopy. The following bacterial morphotypes were identified: cocci, short rods, filaments and few spirochetes in periodontitis and mainly coccobacillary-shaped bacteria in localized juvenile periodontitis. Also Mycoplasma-like structures were identified in the localized juvenile periodontitis cases. Tunnel-like formations at different depths of the oral epithelium contained higher numbers of bacteria than those seen on the adjacent oral surface. Identification of specific bacteria in the oral epithelium may have important pathogenic and therapeutic implications. PMID- 3863913 TI - Surgical removal of the fully impacted mandibular third molar. The influence of flap design and alveolar bone height on the periodontal status of the second molar. AB - This study was carried out because a great deal of uncertainty exists as to he effect of the surgical removal of the fully impacted third molar on the periodontal status of the second molar. The objectives were to determine the effect of surgical removal of the third molar on the periodontal status of the second molar; the influence of flap design on these results; the influence of the initial height of the alveolar bone on the distal of the second molar on subsequent changes in attachment level. The study included 30 patients with bilateral mandibular impactions. A split-mouth experimental design was used, with one side of the mandible being randomly allocated to one of two flap design groups. Plaque level, gingival inflammation, probing depth and attachment level measurements around the second molar were taken at baseline and then at monthly intervals for a period of 6 months. Alveolar bone height was measured from panoramic radiographs. Six months postsurgically, both flap design groups exhibited a statistically significant loss of attachment level on the distal surface of the second molar with no difference between the two flap groups. The initial height of the alveolar bone on the distal of the second molar had no influence on the loss of attachment. It was concluded that the surgical removal of the fully impacted mandibular third molar led to the loss of attachment on the distal of the second molar; flap design had no influence on the degree of attachment loss; the initial height of the alveolar bone on the distal of the second molar had no influence on the loss of attachment. PMID- 3863914 TI - Practice styles in periodontics. II. AB - In 1980 the American Academy of Periodontology published the results of its first major survey of practice characteristics in the Journal of Periodontology. That first study arose from membership concerns about the lack of knowledge about career patterns of periodontists and, more specifically, about employment opportunities for graduating periodontists. Three years later, the Committee on Practice Styles and Opportunities in Periodontics was appointed to replicate the earlier study in order to provide information on recent changes in the practice of periodontics. This decision is commendable since few dental specialty organizations collect data from their membership which can be systematically compared to data from an earlier study. The Academy's Committee contacted David O. Born, PhD, a dental manpower specialist at the University of Minnesota and a technical advisor on the earlier study, for assistance in conducting a replication in 1984. Based on feedback on the first survey and on comments and suggestions from committee members, a revised questionnaire was developed. This questionnaire was, for the most part, a replication of the earlier survey instrument, although several problematic items were deleted or modified and new items, reflecting more recent concerns, were added. The revised questionnaire was distributed in the Spring of 1984 through two mailings to 2937 Active members and 798 Affiliate members. After unusable and undeliverable questionnaires were deleted from the returns, an effective response rate of 55% (N = 2082) was obtained. This report is based on the information supplied by those 2082 members. In the tables and text which follow, the figures reported at the national level refer to "Private practice" periodontists responding to the survey; Academy members who are a part of the Federal services (e.g., Military, Veterans' Administration, Indian Health Service, etc.) are tabulated separately as "District 8" data. While several members from foreign countries responded to the survey, their data have not been included since the information was too dispersed to permit conclusions to be drawn. PMID- 3863915 TI - Effects of citric acid treatment on autogenous free graft coverage of localized recession. AB - Citric acid root conditioning prior to free gingival autograft (FGA) coverage of denuded roots may increase the likelihood of reattachment, but controlled studies to determine the value of the procedure have not been done on human subjects. This investigation was done to compare the effects of FGA root coverage with and without citric acid pretreatment. Nineteen patients with 30 affected teeth participated in the study. Fifteen teeth received FGAs without citric acid pretreatment and 15 teeth received FGAs with citric acid pretreatment. Measurements of gingival recession and sulcus depth were made preoperatively and 30, 60 and 90 days following the surgical procedure. Free gingival autografts with and without citric acid pretreatment each significantly reduced the amount of exposed root, but no differences between groups were found. Except for the 90 day single tooth control group, mean sulcus depths were significantly decreased at 30, 60 and 90 days, but there were no differences noted between single tooth citric acid and control groups or multiple tooth citric acid and control groups. Citric acid treatment of affected roots prior to FGA coverage does not appear to be justifiable. PMID- 3863916 TI - A morphologic study of the mesial root surface of the adolescent maxillary first bicuspid. AB - Treating periodontitis which involves the mesial concavity of the maxillary first bicuspid can be very challenging. Fifty extracted adolescent maxillary first bicuspids were sectioned in 2-mm thick sections apical to the cementoenamel junction (CEJ). The mesial concavity depth and the cementum and dentin thickness were measured in the sections. The single-rooted bicuspids have a concavity 0.35 mm deep at the CEJ and a concavity 0.59 mm deep 4.7 mm apical to the CEJ. Two rooted bicuspids furcate at 7.9 mm and have a concavity 0.44 mm deep at the CEJ which increases to 1.08 mm at the 4.7 mm level. Cementum thickness averages from 0.9 mm at the CEJ to 1.1 mm at the 9.4-mm level. Most bicuspids also have a distal concavity which is deepest at the 4.7-mm level. The results imply that any attachment loss around the maxillary first bicuspid involves surfaces which are most likely concave. These concave surfaces make both plaque removal and various periodontal therapeutic procedures difficult. PMID- 3863917 TI - Comparative analysis of biopsy specimens from gingiva and alveolar mucosa. AB - A total of 834 consecutive biopsy specimens from the gingiva and 448 from the alveolar mucosa were examined to see if differences in structure and function are reflected in categories and frequency of diagnoses. In both regions, inflammatory/reactive hyperplasia accounted for about 85% of the lesions and neoplasia for most of the remainder. Pyogenic granuloma was the most common lesion in the gingiva (23.6%) and fibrous hyperplasia in the alveolar mucosa (23.2%). The ratio of benign to malignant neoplasms was greater in the gingiva (10:1) than in the alveolar mucosa (almost 1:1). Benign tumors of the gingiva and malignant tumors of the alveolar mucosa occurred more often in males than one would expect from their proportion in the survey (keeping in mind that the numbers in alveolar mucosa were small). Lesions in these two regions were similar, but differed greatly in their frequency and in sex and age distribution. PMID- 3863918 TI - Mycosis fungoides with multiple oral mucosal lesions. A case report. AB - Mycosis fungoides is a cutaneous T-cell lymphoma which in its later stages affects extracutaneous sites, including the oral mucosa. A case is presented in a 69-year-old male in which oral involvement was widespread and rapidly progressive. Although gingival involvement, as seen in this patient, is relatively rare, it is useful for the periodontist to be aware of the oral manifestations of this disease since cutaneous lesions would most likely be covered if the patient were to present for consultation on an ambulatory basis. PMID- 3863919 TI - Management of arthrogryposis multiplex congenita. A case report. AB - Arthrogryposis multiplex congenita is a rare disorder of skeletal muscle development which is characterized by deforming contractures of the joints, but seldom affects the temporomandibular joint. This report reviews the condition and reports the findings and periodontal management of a patient referred with arthrogryposis multiplex congenita which required treatment for severe dilantin gingival hyperplasia. PMID- 3863920 TI - The inductive properties of human dentin and cementum. AB - Studies of the inductive properties of human dentin and cementum have yielded differing results. Comparisons are difficult to draw because of variations in time, donor tissue, host immunologic status, implant site, decalcifying agents and degree of decalcification. Analysis of the many experiments intimates that the answers may lie in the use of citric acid and/or the degree of decalcification. The direction of future investigations is suggested. PMID- 3863921 TI - Identification of major urinary metabolites of ACNU, 3-[(4-amino-2-methyl-5 pyrimidinyl)methyl]-1-(2-chloroethyl)-1-nitroso urea hydrochloride in rats. AB - Metabolites of 3-[(4-amino-2-methyl-5-pyrimidinyl)methyl]-1-(2-chloroethyl)-1- nitrosourea hydrochloride (ACNU) in rat urine were investigated. After intravenous administration of 14C-ACNU into rats, four major radioactive metabolites and two minor ones were detected in the urine by two-dimensional thin layer chromatographic analysis. The main metabolite was identified to be an imidazolidinone compound, 1-[(4-amino-2-methyl-5-pyrimidinyl)methyl]-5-hydroxy-2 imidazolidinone (M-D). One of the other major metabolites was identified to be a nitrosated compound of the main metabolite i.e., 1-[(4-amino-2-methyl-5 pyrimidinyl)methyl]- 5-hydroxy-3-nitroso-2-imidazolidinone (M-C). These were new types of metabolites which have not been reported in the metabolic study of other chloroethylnitrosourea derivatives. Compared with authentic compounds, two metabolites were identified to be a denitrosated derivative of ACNU i.e., 1-[(4 amino-2-methyl-5-pyrimidinyl)methyl]-3-(2-chloroethyl)urea (M-B), and a cyclized pyrimidopyrimidine compound which lacks the ethylene moiety of ACNU, i.e., 3,4 dihydro-7-methylpyrimido[4,5-d]pyrimidin-2-(1H)-one (M-A). The two minor metabolites were supposed to be compounds derived from M-A. Discussions were made on mechanism of formation of these metabolites in vivo. PMID- 3863922 TI - In vitro metabolism of ACNU, 3-[(4-amino-2-methyl-5-pyrimidinyl)methyl]-1-(2 chloroethyl)-1-nitroso urea hydrochloride, a water-soluble antitumor nitrosourea. AB - In vitro decomposition of ACNU, 3-[(4-amino-2-methyl-5-pyrimidinyl)methyl]-1-(2 chloroethyl)-1-nitros ourea hydrochloride, in various conditions was studied with the use of the 14C-labeled compound. Metabolite A, 3,4-dihydro-7 methylpyrimido[4,5-d]pyrimidin-2(1H)-one (an intramolecular cyclized product), was formed spontaneously in the phosphate buffer (pH 7.4) with simultaneous liberation of the alkylating moiety. With rat liver enzyme preparations, formation of three metabolites was observed. Those were metabolite B, 1-[(4-amino 2-methyl-5-pyrimidinyl)methyl]-3-(2-chloroethyl)urea (a denitrosated product), metabolite C, 1-[(4-amino-2-methyl-5-pyrimidinyl) methyl]-5-hydroxy-3-nitroso-2 imidazolidinone (a product via oxidative dechlorination), and metabolite D, 1-[(4 amino-2-methyl-5-pyrimidinyl)methyl]-5-hydroxy-2-imidazolidinone (a denitrosated product of metabolite C). Formation of metabolite B was catalyzed with both cytosolic and microsomal enzymes, not inhibited with SKF-525A, and partly dependent on nicotinamide adenine dinucleotide phosphate (NADPH). These results suggest that at least two enzymatic steps would be involved in the formation of this product. Metabolites C and D were produced by the microsomal preparation, being dependent on O2 and NADPH, inhibited by CO and SKF-525A, and enhanced by phenobarbital pretreatment. When metabolite C was incubated with cytosolic and microsomal preparations, more efficient formation of metabolite D with the former than the latter was observed. From these results, it was assumed that oxidative dechlorination of ACNU to metabolite C would be catalyzed with the microsomal mixed function oxidase, and metabolite D would be produced via denitrosation process of metabolite C. PMID- 3863923 TI - Strength and creep of dental amalgam: the effects of deviation from recommended preparation procedure. AB - The effects of deviations from recommended preparation procedures on the compressive strength, modulus of elasticity, plastic deformation, toughness, and creep of four commercial amalgam alloys have been investigated. Deviations included changes in trituration time, mercury/alloy ratio, and condensation pressure. With regard to both compressive strength and creep, there were great differences in the susceptibility of different amalgam alloys to variations in manipulation. One conventional alloy showed almost no variation in compressive strength as a result of the deviations from the recommended preparation procedure. This material also showed much greater plastic deformation and fracture toughness than the other materials, making it less brittle and probably more resistant to bending forces. Dispersalloy exhibited both increased and decreased strength as a result of the deviations, while ANA 2000 and Revalloy only showed decreased strength. Some of the alterations for ANA 2000 and Revalloy resulted in a decrease in strength below an acceptable clinical level. Regarding the modulus of elasticity, only the conventional alloys were affected by the alterations in the preparation procedure. However, for the plastic deformation, the results were reversed; only the high-copper alloys were affected. The toughness of the specimens was decreased for all the alloys with the exception of one, which was insensitive to changes in the preparation procedure as far as compressive strength was concerned. One of the high-copper alloys showed the least change in creep relative to deviations in preparation procedures. Lowered condensation pressure increased the creep value for all the amalgams; and for the conventional alloys a lowered mercury/alloy ratio also resulted in increased creep.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863925 TI - Effect of repeated firing on fluorescence of porcelain-fused-to-metal porcelains. PMID- 3863924 TI - Leakage study of three esthetic veneering materials. PMID- 3863926 TI - Surgical stent fabrication for hydroxyapatite augmentation of the edentulous ridge. PMID- 3863927 TI - Pressure indicators for removable prosthodontics. AB - P.I.P. and Coltene pressure spot indicator were tested on the same 30 sets of complete maxillary and mandibular dentures and on two maxillary dentures against natural dentition. They were tested at delivery for pressure spots, but adjustments were not made. They were tested again after 24 hours to visualize and compare actual pressure spots. Half the dentures were adjusted according to P.I.P. and half according to Coltene pressure spot indicator. The patients were recalled after 1 week to determine if they were free from discomfort. The P.I.P. showed a greater clinical correlation of predictable to actual pressure spots and enabled the investigators to spare more patients from post-delivery discomfort. PMID- 3863928 TI - Increased tolerance to complete dentures after surgical modification of mylohyoid ridges. AB - Of 521 patients referred to a specialist prosthodontic practice for complete dentures, 274 were considered as candidates for simple surgery to smooth prominent mylohyoid ridges before denture construction. Of these, 183 were thus treated. The remaining 91 did not receive surgery because of personal preference, underlying medical conditions, or other reasons. The percent who required three or more postinsertion visits to achieve comfort with their dentures was 7% for those who received surgery, 27% for those who required but did not receive surgery, and 17% for those not deemed to require surgery. This suggests that the surgical smoothing of prominent mylohyoid ridges may markedly improve patients' tolerance of dentures in the short term. However, the potential for confounding from extraneous factors in these nonexperimental circumstances must be considered. PMID- 3863929 TI - Submucosal nodular chondrometaplasia in denture wearers. AB - In 39 denture-wearing patients in whom anterior maxillary flabby ridge tissue (prosthesis fibroma) was excised, 15.4% contained cartilaginous nodules within this tissue. The chondrometaplasia may arise due to mechanical irritation activating pluripotential mesenchymal cells; but the possibility that the cartilaginous nodules represent remnant embryologic tissue cannot be excluded. PMID- 3863930 TI - Oral endoscopy in prosthodontic management of the soft palate defect. AB - Telescopic oral endoscopy is an effective aid in the construction and modification of a speech aid prosthesis. The method is noninvasive and easy to perform, permits the prosthodontist to achieve the goal of functional effectiveness in prosthesis construction while keeping the weight and size of the pharyngeal extension at a minimum, decreases the number and length of patient visits required for modification, and when coupled to a fiberoptic teaching arm or a video camera and recording system, it becomes an excellent aid in teaching, patient education and orientation, and record keeping. PMID- 3863931 TI - Methyl methacrylate stent for prevention of postexcisional recurrent ear keloid. AB - Compared with other available treatment modalities that rely on active pressure over the excised region, this method of therapy works by confinement of the soft tissue to the internal dimensions of the stent. It minimizes the possibility of creating excessive force that could cause an unfavorable response such as inflammation or necrosis. One advantage of this design is that the stent can be used for the treatment of either an helix or earlobe keloid, while the button or clip devices cannot be used in the helix because of its wavelike configuration (Fig. 15). PMID- 3863932 TI - A rodent model for the investigation of dental implants. PMID- 3863933 TI - Protrusive positioners. AB - Techniques were described for fabricating maxillary and mandibular protrusive positioners for treatment of disk-condyle derangements. Treatment time with the splints varies from 4 to 12 months depending on the age of the patient, the degree of existing symptoms, and patient motivation. At the end of the treatment period and after removal of the splints, the patient may have (1) no pain or internal derangement, (2) no pain but internal derangement with or without reduction, or (3) pain and internal derangement with or without reduction. If dental treatment is required, patients in the first two categories can be treated at a physiologically acceptable treatment position with existing treatment modalities. For patients in the third category, definitive, irreversible stabilization should be reevaluated. For these patients a mandibular cast splint can be changed to an interim splint by replacing the self-polymerizing resin with Isosit (Ivoclar-Vivadent, Schaan, Liechtenstein) or heat-processed acrylic resin. PMID- 3863934 TI - Comparative radiography of artificially created mandibular condyle defects. AB - This study was designed to evaluate the effectiveness of four radiographic techniques in demonstrating the TMJ. Mandibular condyles of a variety of sizes, as well as horizontal and vertical angulation, were selected. The location and size of the defects also varied. The mandibular condyles, in which 12 defects were created, were divided into two groups of six large and six small each. On examination of the condyles with the different defects, using each of the four radiographic techniques, the defects were localized with silver amalgam and reexamined with the radiographic techniques. The visualization of the defects was compared using the radiographs. PMID- 3863935 TI - Extrinsic trauma: a significant precipitating factor in temporomandibular dysfunction. PMID- 3863936 TI - In vitro study of the wear characteristics of natural and artificial teeth. PMID- 3863937 TI - Drifting, tipping, supraeruption, and segmental alveolar bone growth. AB - Drifting, tipping, supraeruption, and segmental alveolar bone growth are the four major forms of nonorthodontic intraoral tooth movement. They may occur separately but usually occur in combination (Fig. 6). They can occur at any age but tend to be most devastating in their effects on the dentition of the young adult and the elderly. They may represent nonrestorable occlusal situations if combined and present in both arches. Clear diagnosis is therefore essential prior to the formulation of a treatment plan. PMID- 3863938 TI - Irritation of ocular tissue by irreversible hydrocolloids. AB - Two ophthalmic and two dental irreversible hydrocolloid materials were tested on rabbit conjunctivae to determine histologically their potential to irritate these tissues. Each of the four impression materials elicited nearly the same amount of inflammatory response. The differences between the response of the controls and the response to Ophthalmic Mold-Eye, Jelset Special Formula, and Kerr Alignate Type II were significant. These results indicate that certain dental irreversible hydrocolloids may be used for ocular prostheses but that they should be used with caution because of the inflammation caused by irreversible hydrocolloids. PMID- 3863939 TI - Results of a survey of complete denture procedures taught in American and Canadian dental schools: an update. AB - Dental educators carry a heavy burden of responsibility. Principles and procedures are usually deeply inculcated in students by their teachers, which has a wide-spread effect on the future of dentists and patients. Prosthodontic treatment of edentulous patients, like any other branch of art and science, is not static; but viable, moving, and improving. Constant reevaluation of current and future programs should be made by all teachers who are responsible for prosthodontic education. PMID- 3863940 TI - Curing light-activated composite resins through dentin. PMID- 3863941 TI - Postirradiation comparison of photoactivated composite resins. PMID- 3863942 TI - Leaf gauge with consecutively numbered leaves. PMID- 3863943 TI - The role of the maxillofacial prosthodontist in detection of recurrent head and neck cancer. AB - Maxillofacial prosthodontists are in a unique position to aid in the detection of recurrent and secondary malignancies of the head and neck cancer patient. This is related directly to their intimate knowledge of normal and abnormal oral anatomy and to the large amount of time they spend with patients during treatment and follow-up. I have detected many recurrent and secondary tumors during the few years I have been in a relatively low volume maxillofacial prosthetics practice. The patient's recall visits to the maxillofacial prosthodontist should be evenly spaced between the patient's visits to the head and neck surgeon when possible. By earlier detection and immediate referral to the surgeon, there is the possibility of a higher long-term cure rate in head and neck cancer patients who are receiving maxillofacial prosthetic treatment. PMID- 3863944 TI - Mantle irradiation of the major salivary glands. AB - Radiation given to the mantle field for treatment of Hodgkin's disease impinges on the submandibular and parotid glands at levels that have been both measured and calculated to be the complete tumor dose. This dosage is above the level of irradiation that has been shown to cause partial or complete loss of salivary gland function. PMID- 3863945 TI - Aerodynamic assessment of prosthetic speech aids. AB - The primary function of a speech aid prosthesis is to provide adequate palatopharyngeal function by preventing nasal emission and hypernasality during oral speech production and permitting sufficient nasal air escape during nasal consonant production. The adequacy of speech aids is often judged subjectively by speech-language pathologists and prosthodontists. However, when oral and laryngeal function are also affected, additional information may be needed for accurate assessment of palatopharyngeal function and optimal prosthetic management. In these instances, aerodynamic measurements can provide information about palatopharyngeal function and guide fabrication and modification of speech aid prostheses to provide adequate palatopharyngeal function for speech. PMID- 3863946 TI - A technique for evaluation of centric relation tooth contacts. Part II: Following use of an occlusal splint for treatment of temporomandibular joint dysfunction. AB - The purpose of this study was to determine the effect of TMJ dysfunction on the recording of centric relation. Centric relation was recorded using an anterior occlusal stop and by bimanual manipulation. Changes in occlusal contacts were recorded before and after occlusal splint therapy in six subjects with TMJ dysfunction. The pantographic reproducibility index and clinical signs and symptoms were used to determine the presence or absence of dysfunction. Use of the anterior occlusal stop resulted in a more posterior, superior initial tooth contact position when compared with bimanual manipulation. Occlusal contact positions were less consistent in TMJ dysfunction subjects than in control subjects. Initial occlusal contacts changed toward centric relation as the dysfunction disappeared. Final occlusal contact was found on the side where clinical signs and symptoms occurred. The condyle on the affected side appeared to be repositioned posteriorly and superiorly in most instances. Occlusal splint therapy was more effective when the splint was adjusted weekly. This study indicates the need to eliminate TMJ dysfunction before recording centric relation or adjusting the occlusion. Occlusal interferences found with TMJ dysfunction are not the same as occlusal interferences found when TMJ dysfunction is absent. Abnormal features on pantographic tracings may aid in indicating the presence of occlusal interferences. Occlusal adjustment in the presence of TMJ dysfunction would result in erroneous occlusal reduction. PMID- 3863947 TI - Myofascial pain-dysfunction: subjective signs and symptoms. AB - Dental patients were classified by experienced dentists as MPD or non-MPD patients. Apart from the symptoms often used as criteria for such a classification, there is a broad range of symptoms and patient characteristics associated with MPD. Because of procedural and methodologic problems, little is known about the strength of these associations. Because reliable knowledge about symptoms and characteristics of MPD is needed for MPD etiology and for adequate treatment evaluation, the present study tried to establish which subjective signs and symptoms differentiate MPD from non-MPD patients. Results of a questionnaire show that 10 items classified 86% of the patients correctly. Among them, restricted mouth opening and sounds at jaw movement had the highest discriminative power. Pain in the jaw area also showed a highly significant difference between the patient groups. When patient selection is based on these criteria, approximately the same patient groups are obtained by a time-consuming dental examination and by a low-cost questionnaire. Results also showed that reported oral habits such as chewing on hard or tough objects and lip-tongue cheek biting do not differentiate the two groups. Symptoms related to ears and eyes discriminate the groups only marginally. Sleep-related symptoms, with awakening with stiff or painful jaws as the most important item, differentiate patients in a more substantial way. The suggestion from a great number of studies that stress and tension are etiologic factors in MPD is not supported by the present results.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3863948 TI - Occlusal changes following use of soft occlusal splints. PMID- 3863949 TI - Measurement of silent period durations by hand and by commercial device. AB - Silent period durations obtained from the masseter muscle in response to taps to the chin during a clench were measured by the commercially available MDM device and by hand measurement from polygraph tracings. Of the 160 pairs of silent periods, 15 were measurable by polygraph but not by MDM, 20 were not measurable by polygraph but were measured by MDM, and 125 were measured by both. Of the 125 silent periods, the MDM gave a shorter reading in 112. Within-subject correlation coefficients between the two measurement methods ranged from -0.038 to + 0.95; the average (0.75) was significantly different from zero. The among-subject correlation coefficient was + 0.26 and was not significant. These data raise questions about the reliability and validity of silent period durations measured by the MDM device. PMID- 3863950 TI - The recovery and significance of nonoral opportunistic pathogenic bacteria in dental laboratory pumice. PMID- 3863951 TI - Application of prosthodontic techniques in private practice. AB - A survey of 150 LSUSD alumni from the 1977 to 1981 classes was conducted. The questions dealt with type of practice and complete denture techniques. Results of the survey showed significant differences between the prosthodontic techniques the students were taught and the ones they used in practice. An analysis of the responses was made, and the type of prosthodontic procedures taught and practiced as well as the function of the prosthodontic instruction were discussed. PMID- 3863952 TI - Evaluation of condylar position from temporomandibular joint radiographs. PMID- 3863953 TI - Collagen biosynthesis related to temporomandibular joint clicking in childhood. PMID- 3863954 TI - Lipoprotein fractionation by precipitation (a comparison of two methods). PMID- 3863956 TI - Two views on the malpractice insurance crisis. PMID- 3863955 TI - Human synovial dendritic cells. Direct observation of transition to fibroblasts. AB - A subpopulation of human synovial cells develop a stellate morphology during in vitro culture. These cells, called stellate cells or dendritic cells, appear capable of collagenase production. In other tissues, particularly mouse spleen and human peripheral blood, cells with a similar shape express immune region associated (Ia) antigens, stimulate a primary mixed leukocyte reaction, and present antigen to lymphocytes. To characterize synovial dendritic cells, we observed changes in their morphology by time-lapse videomicroscopy. Parallel cultures of cells from the same specimens were observed periodically for HLA-DR surface antigens by immunofluorescence microscopy. During culture, synovial dendritic cells gradually lost their distinct morphologic appearance and became indistinguishable from fibroblasts. Moreover, fibroblasts occasionally assumed a dendritic morphology. When cells were examined at 24-48 h or later, we could not detect HLA-DR antigens on synovial dendritic cells, defined as cells with 4 or more stellate, branching projections. Cells with only 1-3 projections often had HLA-DR antigens. Because human synovial dendritic cells may lose their characteristic morphology upon culture and because they appear to lack Ia antigens in the unstimulated state, we suggest that synovial dendritic cells may be closely related to fibroblasts. PMID- 3863957 TI - Avian antigen. PMID- 3863958 TI - Diabetes-related lower extremity amputations in New Jersey, 1979 to 1981. PMID- 3863959 TI - Cordless telephone: hazard to hearing. PMID- 3863960 TI - Sternoclavicular pyarthrosis. PMID- 3863961 TI - Anomalous junction of the pancreaticobiliary ductal system. PMID- 3863962 TI - Bullous emphysema and pneumothorax. PMID- 3863963 TI - Genomic organization and nucleotide sequence of two distinct histone gene clusters from Xenopus laevis. Identification of novel conserved upstream sequence elements. AB - We have performed a detailed analysis of the genomic organization and the nucleotide sequence of two distinct Xenopus laevis histone gene clusters totaling approximately 23.5 X 10(3) base-pairs. Each cluster contains at least one copy of each of the five histone genes. However, these genes are present in different arrangements within each cluster and different H1A, H2A and H2B proteins (variants) are encoded by the respective genes of each cluster. Southern blot analysis of genomic X. laevis DNA indicates that each cluster is a member of a distinct family of tandemly repeated histone gene clusters. A comparative analysis of the nucleotide sequences flanking the histone genes within these two clusters has revealed the presence of multiple conserved sequence elements that are specific for each histone gene class and located at preferred upstream positions. Several of these elements correspond to sequences that are known to be required for maximal transcription of the corresponding genes. Most of these sequence elements have not been identified previously, although we find that many of them are present at corresponding locations upstream of histone genes from other organisms. We suggest that the conserved upstream sequence elements may play an important role in the expression of histone genes in vivo. PMID- 3863964 TI - Bilateral peritonsillar abscesses and quinsy tonsillectomy. AB - Two patients presented with history, symptoms, and clinical findings suggesting unilateral peritonsillar abscesses. At the time of quinsy tonsillectomy, the patients were found to have pus present in the contralateral peritonsillar spaces. These findings prompted a review of the literature to determine the actual frequency of bilateral peritonsillar abscesses and to reassess the approach to treatment of patients presenting with peritonsillar abscesses.Peritonsillar abscess frequently develops following the onset of acute tonsillitis, and it is possible that this process occurs bilaterally with the developmental stages of the abscesses being different on each side. Intensive antibiotic treatment, incision and drainage of the obvious abscess probably suppresses the development of and masks the presence of the abscess on the opposite side.Quinsy tonsillectomy has been indicated previously for patients not responding to intravenous antibiotic treatment and incision and drainage of their peritonsillar abscess. The possibility of a subclinical contralateral peritonsillar abscess being present is an additional indication for proceeding with a quinsy tonsillectomy, especially in patients who remain febrile after apparent satisfactory drainage of the clinically evident abscess. PMID- 3863965 TI - An unusual otolaryngological problem--mucocutaneous lymph node syndrome (Kawasaki's syndrome) case report. AB - A case of Kawasaki's syndrome is reported, involving a 12 year old Caucasian male who presented with a sore throat, tonsillar hypertrophy, bilateral cervical swelling, and fever. A maculopapular rash present was attributed to a reaction to methicillin. An initial diagnosis of peritonsillar cellulitis with deep lateral neck space cellulitis and abscess was made. Negative surgical exploratory findings and subsequent development of specific signs and symptoms prompted the diagnosis of Kawasaki's disease. Treatment with salicylates proved effective and the patient was discharged home. Kawasaki's disease, a disorder of unknown origin with potentially fatal results, is not an uncommon condition. An awareness of this entity with its protein manifestations is warranted by the otolaryngologist who may well be the first doctor on the scene. Prompt and early treatment with salicylates may well decrease morbidity and potential mortality of this enigmatic disease. PMID- 3863967 TI - Maintaining an effective and efficient dental practice: a formula for success S = A17 + C5. PMID- 3863966 TI - trans activation of an immediate-early frog virus 3 promoter by a virion protein. AB - We investigated the protein and DNA sequence requirements for the expression of an immediate-early frog virus 3 (FV3) gene, infected-cell RNA (ICR) 169. We used a plasmid containing the 78 nucleotides 5' to the transcription start site of ICR 169 placed upstream from the coding sequence for the bacterial enzyme chloramphenicol acetyltransferase (CAT). This construction, when introduced by CaPO4-mediated transfection into various eucaryotic cell lines, promoted CAT synthesis only if the transfected cells were subsequently infected with FV3. Dot blot hybridization of RNA extracted from transfected, FV3-infected cells with a radioactive CAT probe showed that the induction of CAT synthesis by FV3 was at the level of transcription. When transfected cells were infected with FV3 in the presence of cycloheximide, induction of CAT-specific RNA still occurred, demonstrating that a virion protein was responsible for the trans activation. FV3 induced CAT synthesis was inhibited by alpha-amanitin in wild-type Chinese hamster ovary (CHO) cells but not in CHO cells with an alpha-amanitin-resistant RNA polymerase II. The results suggest that a virion protein alters either the DNA template or the host polymerase to allow transcription from immediate-early FV3 promoters. PMID- 3863968 TI - [Clinical significance of the determination of serum carbohydrate antigen 19-9 in patients with carcinoma of the stomach and colorectum]. AB - Serum CA 19-9 levels were measured in 68 gastric cancer patients and 38 cases of colorectal cancer. In patients with stage I-III gastric cancer or Duckes A-C colorectal cancer, the CA 19-9 levels ranged from normal to 127 U/ml, whereas in more advanced cases it was very high. Classified by the mode of recurrence, the highest level of CA 19-9 was observed in liver metastasis. After removal of the main tumor, the CA 19-9 level declined rapidly, increasing with recurrence. Serum CA 19-9 determination in cases of gastric or colorectal cancer was useful to classify the stage of disease, developing a prognosis and identifying a recurrence. PMID- 3863969 TI - [Acute childhood leukemia: treatment results in children's cancer and leukemia group studies 1972-1981]. AB - Controlled clinical trials of therapy for childhood acute leukemia are reviewed in the Children's Cancer & Leukemia Group Studies 1972-1981. The mortality of acute lymphocytic leukemia in children has been reduced about one-half in the past 10 years. Continued progress depends on maintaining our objective of curing all children and in conceiving and testing new ideas that might contribute to cure. Nowadays, the end result of most importance is long-term leukemia-free survival, i.e., the freedom from relapse after off therapy. Advances in the childhood leukemia have paved the way for encouraging progress in the management of the much more common malignancies that affects adults. PMID- 3863970 TI - [Infectious complications and infection prevention in patients with acute leukemia]. AB - Febrile episodes in 147 patients undergoing first remission induction therapy for acute leukemia were analyzed. Febrile episodes occurred 254 times in 136 patients. The cause of fever could not be identified in 54.3% of all episodes. Antibiotic therapy was effective in 81.1% of these episodes with no cause determined. Postmortem examinations proved infections in 65.2% of patients who had fever of unknown origin before death. Sepsis and pneumonia together accounted for 53.4% of documented infections. Sepsis and pneumonia occurred most often when the patients had neutropenia (less than 500/mm3). Increase in neutrophil count and achievement of hematologic remission produced good prognosis of the infections, and the reverse was also true in some patients. Fifty percent of fetal patients died of infection. The incidence of infections, especially pneumonia and infections caused by fungi and Proteus species indicating such infections were exogenous, reduced markedly in laminar air flow rooms. PMID- 3863971 TI - [Organ dysfunctions caused by cancer therapy in children]. AB - Some of organ dysfunctions due to cancer therapy in children are common to those of adults, but others are specific for children. Even common toxicities may have aspects peculiar to children. For example, cisplatin nephrotoxicity easily causes hypomagnesemic, hypocalcemic tetany in children which is rare in adults. Occurrence of second primary malignancies is serious late effect of cancer therapy. Concerning this problem two factors are important in children. Firstly, children with heritable embryonal cancers are predisposed to develop additional malignancies related and unrelated to therapy. Secondly, proportion of different parts of body of children is different from one of adults and normal tissues distant from the primary radiation field may receive surprisingly large dose of irradiation. For example, a 8-year-old boy received 6 to 9% of dose of prophylactic skull irradiation for acute lymphocytic leukemia to his thyroid. Younger children who have smaller viscerocranium are expected to have larger dose. Children who received antileukemic therapy for 3 to 7 years showed significant delays of linear growth and bone age. PMID- 3863972 TI - [A case of CML blast crisis with numerous megakaryocyte and basophil colony formations]. PMID- 3863973 TI - [Chronic myelogenous leukemia following therapy of early gastric cancer]. PMID- 3863974 TI - [Congenital leukemia: a case report with evidence of differentiation from acute lymphocytic leukemia to acute monocytic leukemia]. PMID- 3863975 TI - [A long-term survivor after the onset of blast crisis of chronic myelogenous leukemia--an autopsy case associated with myeloblastic tumor formation at the periost of the 10th thoracic vertebra]. PMID- 3863976 TI - [Congestive heart failure after high dose cytosine arabinoside therapy in an ALL patient]. PMID- 3863977 TI - [DNA cytofluorometry of leukemic cells in the blast crisis of chronic myelogenous leukemia]. PMID- 3863978 TI - [Acute myelofibrosis--case reports of acute megakaryoblastic leukemia and acute myeloblastic leukemia]. PMID- 3863979 TI - Detection of Philadelphia chromosome in chronic neutrophilic leukemia. AB - Chronic neutrophilic leukemia (CNL) is a rare myeloproliferative disorder, differentiated from chronic myelogenous leukemia by several features. A case of CNL which was found by long-term culture to involve the Philadelphia chromosome is reported. PMID- 3863980 TI - [Role of "gene research" in basic medicine]. PMID- 3863981 TI - [A case of chronic myelogenous leukemia with a parietal tumor]. PMID- 3863982 TI - [Immunological and physicochemical properties of new tumor marker for pancreatic cancer, KM01, detected by monoclonal antibody]. PMID- 3863983 TI - A new breast carcinoma antigen defined by a monoclonal antibody. AB - A new monoclonal antibody (MoAb), 3E1-2, to human breast carcinoma cells was made. With the use of the immunoperoxidase technique, 3E1-2 was tested on Formalin-fixed and fresh sections of 27 normal and 81 neoplastic tissues, including 37 carcinomas of the breast, 15 lung tumors, 5 colon tumors, and other tumors. Strong uniform staining of the cytoplasm and membrane occurred with the breast carcinoma, whereas with normal breast tissue less intense staining of the luminal membrane was seen; not all cells were reactive with the MoAb. Most other human tumors (with the exception of some lung, kidney, and uterine carcinomas) were nonreactive, and few normal tissues were reactive. The unique features of this new MoAb are: a) reaction with Formalin-fixed as well as fresh tissue; b) lack of a reaction with the cell surface of 43 established cell lines, including 10 lines derived from breast carcinoma cultures; c) variable staining patterns in different breast carcinomas, varying from all cells staining to dense cytoplasmic staining to minimal membrane staining of a few cells; d) a great differential in staining patterns between normal and neoplastic tissue (nonetheless, some normal tissues were 3E-1.2+). The antibody does not detect a tumor-specific antigen, but has a high carcinoma-to-normal breast ratio of staining. In addition, preliminary studies on the sera of 20 patients with carcinoma of the breast have shown that the antigen detected by 3E1-2 is elevated in their serum; 3E1-2 thus has the potential to be used for diagnosis of this disease. PMID- 3863984 TI - Occupation-related risks for colorectal cancer. AB - Several population data bases were used to generate hypotheses about associations between colorectal cancer and workplace exposures. The Third National Cancer Survey interview sample was used to select 343 male and 208 female cases and 626 male and 1,235 female cancer controls. Potential work exposures were assigned with the use of data from the National Institute for Occupational Safety and Health National Occupational Hazard Survey. Dietary factors were modeled from the National Health and Nutrition Examination Survey data. Work-related stress was considered with the use of a model based on the U.S. Department of Labor's Quality of Employment Survey. Other risk factors included age, race, ponderosity, and menopausal status. Logistic analysis yielded hypotheses for colon cancer risk in males with potentially high exposure to solvents, abrasives, and fuel oil and in those in jobs with high demand and low control (high "stress"). Hypotheses emerged for females with potentially high exposure to dyes, solvents, and grinding wheel dust. PMID- 3863985 TI - Serum steroid binding proteins and the bioavailability of estradiol in relation to breast diseases. AB - Serum concentrations of sex hormone binding globulin (SHBG), corticosteroid binding globulin (CBG), and albumin were found to be normal in women with breast cancer (Ca), with benign breast disease (BBD), or with a family history of breast cancer (FHCa). Comparisons between serum steroid binding capacities and immunoassayable SHBG and CBG concentrations did not reveal abnormal forms of either protein. The serum distribution of estradiol (E2) was also determined, and women with Ca were found to have a significantly (P less than .025) higher mean percentage of non-protein-bound E2 than matched controls, but the difference was very small. In general, women with Ca also had proportionately more (P less than .05) albumin-bound E2 and less (P less than .05) SHBG-bound E2 in their sera than the controls, but the serum distributions of E2 in the BBD and FHCa subjects were the same as in controls. The dissociation rates of 5 alpha-dihydrotestosterone and E2 from SHBG in serum appear to increase with time in frozen serum samples, and this factor may effect measurements of the distribution of these steroids in serum. PMID- 3863986 TI - Ricin A chain conjugated with monoclonal antibodies selectively killing human carcinoma cells in vitro. AB - Ricin A chain was coupled to murine monoclonal antibodies MBr1 and MOv2 respectively raised against human breast and ovarian carcinomas. Inhibition of protein synthesis only occurred in those cultured human tumor cells bearing the appropriate target antigens, demonstrating that both components of the conjugate were unchanged in regards to specificity and toxicity. Conjugates were 125-200 times more efficient in inhibiting [3H]proline incorporation than the uncoupled ricin A chain. They were however unable to kill the entire population of the appropriate cells even after repeated treatment. Although the two monoclonal antibodies had similar binding kinetics, the conjugates differed in their cytotoxicity kinetics. The MBr1-ricin A chain conjugate had slow kinetics, and about 20 hours were needed to obtain a protein synthesis inhibition above 50% on the appropriate line (mammary carcinoma MCF-7). In contrast, the MOv2-ricin A chain conjugate showed very fast kinetics, reaching 50% inhibition after only 30 minutes of treatment on both appropriate cell lines SW626 and HT-29 from ovarian and colon carcinomas, respectively. Growth conditions of cell lines, i.e., adherent cells versus suspended cells, and plating time were found to greatly influence the conjugates' killing efficiencies. These studies confirm the possibility of preparing ricin A chain-antibody conjugates, which retain specific cytotoxicity against tumor cells; but they also underline the need for further in vitro studies of various parameters before one considers a therapeutic use of such conjugates. PMID- 3863987 TI - Mortality among a large cohort of chemical manufacturing employees. AB - Cause-specific mortality was surveyed among 19,608 male employees with 1 or more years of service between 1940 and 1980 at the Texas Operations of Dow Chemical U.S.A. Vital status was ascertained through 1980 for 97.3% of the cohort members, and death certificates were obtained for 96.4% of the 3,444 decedents. Mortality risks were found to vary, depending upon which of 3 population groups (United States, Texas, and local counties) was used for comparison, although significantly fewer than expected deaths from all causes was a common finding due to significant deficits in diabetes, diseases of the circulatory system, and cirrhosis of the liver. Significantly more deaths were from ill-defined conditions and cancers of unspecified sites. Lung cancer was significantly elevated in comparisons with the incidences in the United States and Texas, but not in comparison with those in the local counties. The influence of age at hire, period of hire, duration of employment, interval since entry into cohort, employment status, and two measures of social class--educational level and job category--were explored with the use of the Mantel-Haenszel method as adapted for a cohort study. Findings from these analyses are discussed in relation to the observations of other investigators and in the context of the possible impact of these findings on future studies of this work force. PMID- 3863988 TI - Direct relationship between high-energy phosphate content and blood flow in thermally treated murine tumors. AB - In vivo 31P-nuclear magnetic resonance (NMR) spectroscopy and 133Xe clearance were used to monitor serially ATP content and blood flow, respectively, in C3H/HeJ mouse subcutaneous RIF-1 tumors treated with hyperthermia. There was a prompt decrease in ATP [measured spectroscopically and expressed as the ratio of ATP to Pi (ATP/Pi)]. The slope and magnitude of the change in ATP closely paralleled those of tumor blood flow. Close correlation between these two variables was seen when data were analyzed both by treatment group and by individual mouse. Ligated tumors showed qualitatively and quantitatively similar changes in ATP/Pi and blood flow. RIF-1 cells heated in vitro to a similar degree showed no decrease in ATP. The loss of ATP in subcutaneous RIF-1 tumors heated in vivo was primarily due to disruption of tumor blood flow. These data emphasize the importance of vascular factors to in vivo thermal effects. In vivo 31P-NMR spectroscopy can be used to monitor indirectly vascular effects from hyperthermia. PMID- 3863989 TI - Modulation by taurine of the toxicity of taumustine, a compound with antitumor activity. AB - The antitumor activity of 2-[bis-(2-chloroethyl)-amino]ethanesulfonic acid (also referred to here as "taurine mustard" or "taumustine") was evaluated in the murine P388 and L1210 lymphocytic leukemias and in the pigmented and nonpigmented B16 melanoma systems. Treatment with a single ip dose of taumustine (40 mg/kg) resulted in a 130% increase in life-span for mice bearing P388 (intraperitoneal), a 93% increase for mice bearing L1210 (intraperitoneal), and an approximately 80% increase for mice bearing B16 melanoma (intraperitoneal). Repeated low doses (10 mg/kg) of taumustine promoted a 250% increase in life-span for mice bearing P388 (intraperitoneal), the absence of ascitic fluid from day 4 onward, and the presence of pulmonary emboli from day 5 onward. The inclusion of taurine (5 mM) in the culture medium of P388 cells in primary culture for 45 hours did not alter the cytotoxicity of taumustine, and pretreatment of the tumor-bearing host with taurine (250 mg/kg) in daily treatments with taumustine for up to 8 days did not interfere with antitumor activity (140-160% increased life-span). However, treatment of tumor-bearing mice with taurine abrogated neurotoxicity, intestinal necrosis, pulmonary emboli formation, and tail vein necrosis due to the administration of taumustine. The modulation by taurine of taumustine activity suggests that the combination of these agents offers an advantage of selectivity and host protection during chemotherapy. PMID- 3863990 TI - Evaluation of cyclosporine-treated mice as hosts for growing and testing the chemosensitivity of first-transplant-generation human tumor xenografts implanted under the kidney capsule. AB - Freshly resected human tumors were grown as xenografts under the kidney capsules of conventional mice immunosuppressed by daily treatment with cyclosporine A (CsA; 60 mg/kg/day, sc). Tumor persistence and growth in CsA-treated mice were comparable to those found in nude mice. Lower doses or less aggressive schedules of CsA resulted in xenograft rejection. CsA (60 mg/kg/day, sc) treatment of mice was toxic but not lethal. It resulted in a 20% decrease in water consumption, a 10% loss in body weight, and significant reductions in thymus, kidney, and liver weights. Therapeutic doses of cancer chemotherapeutic agents were tolerated by CsA-treated mice, but 10% lethal doses were lethal in 100% of the mice. These results indicate that CsA-treated mice would be an economic alternative to nude mice for growing human tumor xenografts and for testing their chemosensitivity, with the caveat that the dose-limiting toxicity of cancer chemotherapeutic agents will be reached at lower doses in CsA-treated mice. PMID- 3863991 TI - Dietary intervention during the postdosing phase of L-azaserine-induced preneoplastic lesions. AB - The effects of intervention by diets with high or low levels of dietary fat on the development of preneoplastic pancreatic lesions were examined. Wistar rats were treated ip at 14 days of age with a 30-mg/kg dose of L-azaserine [CAS: 115 02-6; diazoacetate serine (ester)] and weaned onto the test diets. Animals fed 5% corn oil had fewer preneoplastic lesions compared to animals fed 20% corn oil throughout the 4-month posttreatment period. The strong response observed in rats fed 20% corn oil could be markedly reduced by intervention with a 5% corn oil diet halfway through the posttreatment period. Similarly, the low response in animals fed 5% corn oil could be markedly elevated by intervention with a high fat diet. These results provide evidence for the hypothesis that tumor development may be modified by dietary means. PMID- 3863992 TI - Effect of dietary intake of fish oil and fish protein on the development of L azaserine-induced preneoplastic lesions in the rat pancreas. AB - The effect of dietary intake of fish (menhaden) oil and fish (cod) protein on the development of pancreatic preneoplastic lesions was examined in male Wistar rats. Fourteen-day-old animals were given a single ip injection of 30 mg L-azaserine/kg body weight [CAS: 115-02-6; diazoacetate serine (ester)]. At 21 days of age they were weaned and maintained on dietary treatment for 4 months. Fish protein did not appear to produce a significantly different preneoplastic response when compared to casein as a protein source. However, a 20% menhaden oil diet, rich in omega 3 fatty acids, produced a significant decrease in the development of both the size and number of preneoplastic lesions when compared to a 20% corn oil diet rich in omega 6 fatty acids. This study provides evidence that fish oils, rich in omega 3 fatty acids, may have potential as inhibitory agents in cancer development. PMID- 3863993 TI - Genetic influence on type 2 or Clara cell origin of pulmonary adenomas in urethan treated mice. AB - Urethan-induced lung adenomas arising from alveolar type 2 cells and from bronchiolar Clara cells have distinct histologic patterns; and examination of all lung adenomas found in A/J, SWR/J, BALB/cByJ, 129/J, and RIIIS/J inbred mice, 14 16 weeks after a single urethan injection, demonstrated that both tumor types were present in all five strains. The relative numbers of each tumor type varied significantly among the different strains. No correlation was observed between the type of tumor formed and tumor multiplicity. Augmentation of tumor multiplicity by chronic butylated hydroxytoluene (BHT) treatment following urethan injection did not change the proportion of the 2 tumors from that observed with urethan alone. This finding demonstrated that BHT stimulated the development of both tumor types equally. The tumors found 14 weeks after a single urethan injection into neonatal BALB mice were larger than those found 14 weeks after urethan injection into adult BALB mice, but the proportion of alveolar and papillary tumors was the same for both groups. Lymphocytic infiltration into tumors was mainly associated with Clara cell-derived tumors. The proportion of type 2 cell- and Clara cell-derived lung adenomas appeared to be controlled primarily by the genetic background. PMID- 3863994 TI - Susceptibility to urethan-induced pulmonary adenomas between A/J and C57BL/6J mice: use of AXB and BXA recombinant inbred lines indicating a three-locus genetic model. AB - For insight into the number of genes governing differential susceptibility such as in mice of the inbred strain A/J (A) highly susceptible to the induction of pulmonary adenomas by urethan in comparison to resistant strain C57BL/6J (B6) mice, tumor induction was studied in the AXB and BXA series of recombinant inbred (RI) strains derived respectively from A female X B6 male and B6 female X A male ancestral lines. Mice from 46 of these lines were given injections with 1 mg urethan/g (body wt), and the tumor number was assessed 4 months later. Lung tumor multiplicity for several RI lines was independently characterized in the Boulder, CO, and Montreal laboratories, and very similar numbers were obtained. Most lines had multiplicities intermediate to those of the progenitor strains, clearly indicating that more than a single gene accounted for the differences in lung tumor susceptibility between A and B6. The tumor incidence and multiplicity data fit very closely to what would be expected under a three-locus model, and we designated these genes "Pas" for pulmonary adenoma susceptibility. One locus called "Pas-1" had an effect on tumor multiplicity greater than that of the other loci. PMID- 3863995 TI - Neoplasms observed in untreated and corn oil gavage control groups of F344/N rats and (C57BL/6N X C3H/HeN)F1 (B6C3F1) mice. AB - Control data on F344/N rats and (C57BL/6N X C3H/HeN)F1 (B6C3F1) mammary tumor virus-free mice from the National Toxicology Program (NTP) were examined to determine if animals receiving corn oil by gavage showed tumor incidences that differed from those of untreated control animals. Analyses of these data were adjusted for interlaboratory variability, time-related trends, and supplier effects. Two biologically significant effects were found: Male F344/N control rats receiving corn oil by gavage showed a higher (P less than .05) incidence of pancreatic acinar cell adenoma and a lower (P less than .001) incidence of leukemia (primarily mononuclear cell leukemia) than did the corresponding untreated controls. The increased incidences of pancreatic acinar cell adenoma seen in male rats administered corn oil by gavage were associated with elevated body weights observed in these animals relative to untreated controls. Female F344 rats and male and female B6C3F1 mice showed little or no evidence of a difference in tumor incidence between corn oil gavage-treated and untreated controls. A review of nearly 300 carcinogenesis studies done by the National Cancer Institute (NCI) and the NTP revealed that there were no corn oil gavage studies in which increased incidences of pancreatic acinar cell tumors or leukemia in male F344/N rats were the sole evidence of the carcinogenicity of a test chemical. Thus use of corn oil appears to have little impact on the interpretation of NCI-NTP carcinogenicity studies. PMID- 3863996 TI - [Therapeutic effect of ofloxacin (DL 8280) on pulmonary tuberculosis. (Report of a one year-administration study on sixteen treatment-failure patients)]. PMID- 3863997 TI - [Gas chromatography study of the fatty acid pattern of total lipids in children with glycogen storage disease]. PMID- 3863998 TI - Neutrophilic dermatoses and myeloproliferative disease: report of two cases. AB - The term "neutrophilic dermatosis" has been suggested for a spectrum of skin lesions that have been noted in some patients with myeloproliferative diseases. These cutaneous conditions vary from plaques typical of Sweet's syndrome to bullous and pyodermatous lesions. We describe two patients with neutrophilic dermatoses and myeloproliferative disorders. Distinctive features included concurrent bullous pyodermatous lesions and characteristic lesions of Sweet's syndrome in one patient and overwhelming sterile pulmonary infiltration in the other patient. These disorders may be difficult to distinguish from acute infectious processes, and they may have systemic components, including pneumonitis. Possible therapeutic alternatives to systemic corticosteroid therapy are suggested. PMID- 3863999 TI - Treatment of acute myelogenous leukemia in children. AB - Progress in the treatment of childhood AML has not equalled the advances obtained in the management of ALL. Two recent chemotherapy studies (i.e. VAPA and BFM 78), however, reported marked increase in the proportion of long-term remissions. The initial therapy of the cooperative study BFM 78 consisted of two 4-week phases of intensive induction/consolidation with 7 different drugs and cranial irradiation followed by maintenance with thioguanine and cytosine arabinoside for 2 years and additional adriamycin during the first year. A total of 151 children with AML were enrolled in the study from 30 centers. Of these 119 (79%) patients achieved complete remission. After a median observation time of 34 (14-57) months, there have been 46 relapses. CNS was involved in 6 of these relapses. Life table analyses revealed the following probabilities after 4 1/2 years: survival: 46%; disease-free survival: 41% (total group), 52% (remission group); disease-free interval 56% (remission group). The risk of relapse appears to decrease considerably after 2 1/2 years. No risk factors for the occurrence of relapse have been identified. PMID- 3864000 TI - Effects of cytosine arabinoside on DNA synthesis and mitotic activity of HL-60 cells. AB - HL-60 cells were exposed to tritiated thymidine (3HTdR) alone (control group), to cytosine arabinoside followed by 3HTdR or to tritium labelled cytosine arabinoside (3H-AraC) for one hour followed by incubation with colcemide to arrest them during metaphase. Autoradiographic slides were prepared and cell counts were at 1, 24, 48 and 72 h. The studies demonstrated that HL-60 cells exposed to high concentrations of AraC (10 micrograms ml-1) can pass through the S-phase as the G2-phase of the cell cycle and enter mitosis. Despite completing the S-phase, the cells exposed to AraC were severely damaged and had already begun to die. PMID- 3864001 TI - Methotrexate-vindesine association in leukemia: pharmacokinetic study. AB - Methotrexate (MTX) and vindesine (VDS) have both been found effective in the treatment of acute leukemia. With regard to their pharmacological effects at the cellular level they can reportedly interact. Administration of MTX at high dose levels has been suggested as both a curative and preventive treatment of blastic meningitis. The purpose of this work was to determine whether an injection of VDS leads to any change in MTX clearance and uptake in the cerebrospinal fluid (CSF). The plasma pharmacokinetic and CSF influx of MTX and VDS were assayed after high dose systemic MTX with an intravenous bolus of VDS administered in the treatment of acute lymphoblastic leukemia. The MTX concentration was determined by enzymatic assay and VDS by radio immunoassay. No interrelation between these drugs was found. MTX levels in the CSF were sufficient for therapeutic effectiveness but were not affected by intravenous VDS. Detectable amounts of VDS were observed in the CSF but were not altered by MTX. PMID- 3864002 TI - [Natural killer (NK) cell activity in the peripheral blood of patients with malignant diseases: melanoma, carcinoma, chronic and acute lymphatic leukemia]. PMID- 3864003 TI - State's statistics show malpractice claims increasing in frequency, severity. PMID- 3864004 TI - An approach to the patient with facial pain. PMID- 3864005 TI - Regulatory status of high frequency ventilators. PMID- 3864006 TI - [Genetic characteristics of Leishmania strains isolated from gerbils in the Mongolian People's Republic]. PMID- 3864008 TI - Peripheral nerve in type III glycogenosis: selective involvement of unmyelinated fiber Schwann cells. AB - Electron microscopy of intramuscular nerves in biopsy material from a child with glycogenosis type III showed massive glycogen accumulation in the Schwann cells of unmyelinated nerve fibers. Other cells, including Schwann cells of myelinated fibers, perineurial cells, endoneurial fibroblasts, endothelial cells, and pericytes, were not similarly affected. PMID- 3864007 TI - Effects of hemin on a lymphoblastoid cell line that expresses the human epsilon- and gamma-globin genes. AB - Northern blot analysis using probes specific for each of the human embryonic (epsilon), fetal (gamma), and adult (beta) globin genes indicates that the human lymphoblastoid F-265 cells express the embryonic and fetal globin genes. Unlike the erythroid cell line K562, in which globin RNA levels increase during treatment with hemin in culture, globin RNA levels decrease in F-265 cells in the presence of hemin. This effect is reversible after passage of F-265 cells in fresh medium without hemin. Both the rates of globin RNA synthesis and the presence of DNase I-hypersensitive sites in hemin treated and untreated F-265 cells were investigated to identify the levels at which globin gene expression is controlled. PMID- 3864009 TI - Evidence of a new chimeric bcr/c-abl mRNA in patients with chronic myelocytic leukemia and the Philadelphia chromosome. AB - The hallmark of chronic myelocytic leukemia is the presence of the Philadelphia chromosome (Ph1). In recent studies, we obtained data that strongly suggested the involvement of an oncogene, c-abl, in this type of leukemia. This oncogene, normally located on chromosome 9, is translocated to chromosome 22 as a result of the Ph1 translocation. In addition, we identified a region on chromosome 22, the breakpoint cluster region (bcr), which contains the chromosomal breakpoint in all patients with chronic myelocytic leukemia who are positive for Ph1. Recent studies have suggested that the bcr is part of a gene that is truncated as a consequence of the Ph1 translocation. The deleted part of this gene could be replaced by c-abl sequences; to test this hypothesis we analyzed the RNA of five patients with chronic myelocytic leukemia. All five had chimeric bcr/c-abl messenger RNA, suggesting that the deleterious effects of this disease can be associated with an abnormal chimeric protein encoded by the bcr and the c-abl oncogene. PMID- 3864010 TI - Multiple factors in the prediction of risk of proliferative diabetic retinopathy. AB - To identify risk factors for the development of proliferative diabetic retinopathy, we compared 111 patients with longstanding insulin-dependent diabetes who had proliferative retinopathy (cases) with 81 patients with diabetes of similar duration (an average of 26 years) who did not have proliferative diabetic retinopathy (controls). The cases had diabetes that was more difficult to manage, as evidenced by their more frequent blood sugar levels above 200 mg per deciliter (11 mmol per liter) on routine clinic visits (odds ratio, 1.6 for each increment of 10 per cent in the relative frequency), and they expended less effort in managing their diabetes, as indicated by their less frequent testing of urine for sugar (odds ratio, 0.3). Among those who did not have myopia, the cases also had an excess of the HLA-DR phenotypes 4/0, 3/0, or X/X (odds ratio, 10.0). Among those with myopia, these phenotypes did not carry an increased risk of proliferative retinopathy. These results support a multifactorial model for the development of proliferative diabetic retinopathy; however, the mechanisms of action of the identified factors remain unknown. PMID- 3864012 TI - Family medicine at Duke: a followup. PMID- 3864011 TI - Plan for field tests of bacteria. PMID- 3864013 TI - The Mountain Area Health Education Center: a unique university/community partnership. PMID- 3864014 TI - Blue Cross/Blue Shield's Personal Care Plan. PMID- 3864015 TI - Serum digoxin levels and renal failure. PMID- 3864016 TI - Accidental Veratrum viride poisoning in three "ramp" foragers. PMID- 3864017 TI - Removing a tick. PMID- 3864018 TI - Sebaceous gland carcinoma of the eyelid: complete response to sequential combination chemotherapy. PMID- 3864019 TI - Fine-needle aspiration--an aid to breast diagnosis. PMID- 3864020 TI - A cost-effective community model for treating alcohol withdrawal syndrome: a preliminary report. PMID- 3864021 TI - [Leukoplakia of the oral mucosa]. PMID- 3864022 TI - [Somatization disorders and somatic fixation in patients in dental practice]. PMID- 3864023 TI - [Migrated upper anterior teeth in patients with chronic periodontitis. Etiology and therapy]. PMID- 3864024 TI - [The invisible risks of radiographs]. PMID- 3864025 TI - [The odontogenic keratocyst: preliminary results of conservative surgical treatment]. PMID- 3864026 TI - [Dental questions and sources of information]. PMID- 3864027 TI - [The practice period (I): 'the student becomes the dentist']. PMID- 3864028 TI - Associations between HLA antigens and nephrotic syndrome in African and Indian children in South Africa. AB - The nephrotic syndrome (NS) reported from Southern Africa is distinguished by unusual characteristics in African children and typical features among Indian children. A genetic basis for these differences is explored in 44 African and 33 Indian children with NS in this paper. HLA associations were detected in the 20 Indian children with minimal change NS (MCNS) and 12 African children with membranous NS. Previous studies of HLA antigens, which have all been performed on Caucasian children with MCNS or steroid-responsive NS (SRNS), have detected associations with HLAB and DR locus genes. In this report HLA Bw44, which is part of HLA B12, was found to be significantly more frequent in Indian children with MCNS or SRNS than in controls (45 and 12%, respectively, p less than 0.04; relative risk 5.8). In contrast, African children with membranous nephropathy had a significantly increased frequency of HLA Bw21 (15% in patients and 1% in controls, p less than 0.04; relative risk 22.1). HBsAg was positive in 9 of 11 patients tested in the latter group. We conclude that the interaction between heredity and environmental factors is central to the pathogenesis of membranous nephropathy and similar considerations may be important in the development of MCNS. PMID- 3864029 TI - [Acute myeloid leukemia with intracranial tumor formation--case report]. AB - A 44-year-old house-wife was admitted to the hematological clinic of our hospital on December 21, 1981 for the treatment of acute myeloid leukemia. Hematological examination showed severe anemia, leukocytosis and thrombocytopenia. She was soon started on DCMP therapy (Daunomycin, Cytosine arabinoside, 6-MP and prednisolone). After several repeats of remission and aggravation, she suffered from vertigo, nausea and vomiting in early August of 1982. The CT scan and angiography showed a mass lesion in the middle of the posterior cranial fossa. On August 26, surgical extirpation of the tumor locating in the vermis of the cerebellum was performed successfully. On gross examination the tumor revealed smooth yellowish-red surface, elastic in consistency and measured 40 X 40 X 30 mm in size. Histologically it comprised the leukemic cells. The pathology of the central nervous system due to leukemic cells was discussed in relation to the pertinent literature, including the CT findings and the indication of the surgical treatment. PMID- 3864031 TI - Basic nursing education: approaches & trends in selected countries. PMID- 3864030 TI - Polyamine and prostaglandin markers in focal cerebral ischemia. AB - This study examines the pathophysiology of stroke secondary to focal cerebral ischemia. The interaction of arachidonic acid metabolites and polyamines, a class of ubiquitous ornithine-derived molecules with important membrane effects on edema, Ca++-dependent endocytosis, platelet function, and prostaglandin (PG) formation, are correlated with regional changes in H2 clearance, cerebral blood flow (rCBF), ischemic edema, and somatosensory evoked responses (SSERs) after middle cerebral artery (MCA) occlusion. Thirty cats were studied up to 3 hours before and 6 hours after right MCA occlusion. Four areas of brain showing different levels of perfusion after MCA occlusion were sampled for tissue levels of PGs: 6-keto-PGF1 alpha, PGE2, and as well as thromboxane B2 (TXB2), ornithine decarboxylase activity (ODC) (a measure of polyamine activity) and gravimetric determination of cerebral edema. After right MCA occlusion, right hemisphere SSER amplitude decreased and interpeak latency increased markedly. rCBF was distributed into zones of dense, partial, and no ischemia ranging from 12.6 to 59.4 ml/100 g/minute. Ischemic edema was distributed inversely to rCBF and was increased in areas of dense ischemia (85.2 +/- 0.5%) and ischemia (82.7 +/- 0.7%), but not in partially ischemic or control areas. 6-Keto-PGF1 alpha (1257.3 pg/mg), PGE2 (1628.5 pg/mg), and TXB2 (1572.8 pg/mg) were all significantly (P less than 0.05) increased in areas of partial ischemia that had not yet developed edema. ODC levels were significantly elevated (3812 pmole/g/hour, P less than 0.05) and increased with time in areas of slightly denser ischemia that showed an intermediate increase in edema, but not the presence of infarction. This is the first demonstration that ODC, the rate-limiting enzyme for polyamine synthesis, is stimulated by cerebral ischemia.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3864032 TI - Acquired immunodeficiency syndrome (AIDS)--an update. PMID- 3864033 TI - A 45-year-old man with weight loss, fever, chills, and diarrhea. PMID- 3864034 TI - Perinatal aspects of high multiple gestation. PMID- 3864035 TI - Rounded atelectasis. PMID- 3864036 TI - Acute cholecystitis due to Aeromonas hydrophila. PMID- 3864037 TI - Health 1984-5. PMID- 3864038 TI - Passive immunoprophylaxis of hepatitis B virus infections in newborn infants. AB - Newborn infants of mothers who were chronic carriers of hepatitis Bs antigen (HBsAg) were randomly allocated to be treated or not treated with hyperimmune hepatitis B immunoglobulin (HBIg) at birth and six weeks and were then followed up to one year with sequential blood tests. Ninety percent of all untreated infants born of mothers positive for both HBsAg and hepatitis Be antigen became chronic carriers of HBsAg at one year. In contrast only 9% of infants treated with HBIg became HBsAg positive. Mothers who were HBsAg positive but hepatitis Be antigen negative only uncommonly infected their infants, with 6% being HBsAg positive at one year. Nearly all infections were in Pacific Islanders, Maoris or Asians. It is recommended that antenatal testing of these groups most at risk for hepatitis B virus spread, be initiated, followed by passive immunoprophylaxis with HBIg of infants born of HBsAg, HBeAg positive mothers. PMID- 3864040 TI - Conservative treatment of early breast cancer. PMID- 3864039 TI - Infantile hypertrophic pyloric stenosis: a Dunedin review. AB - Patients who had undergone a Ramstedt pyloromyotomy for infantile hypertrophic pyloric stenosis in Dunedin over a 10 year period to June 1984 were reviewed. Forty-two cases were recorded. More congenital anomalies than expected, a declining rate of wound complications and a high rate of a positive family history were found. The history is reviewed, the data presented and the results discussed. PMID- 3864041 TI - The learning process in medical education. PMID- 3864042 TI - Tamoxifen and breast cancer. PMID- 3864043 TI - Amoxycillin-induced acute interstitial nephritis. PMID- 3864044 TI - Homosexuality debate. PMID- 3864045 TI - Resuscitation of hypothermia victims. PMID- 3864046 TI - Health of ballet dancers. PMID- 3864047 TI - Minerals in infant foods. PMID- 3864048 TI - Rectal suppositories and packaging. PMID- 3864049 TI - Asthma and climate. PMID- 3864050 TI - Elevated plasma manganese levels in welders cutting manganese steel. PMID- 3864052 TI - Reporting of child abuse. PMID- 3864051 TI - Interferon therapy in hairy cell leukaemia. PMID- 3864053 TI - Waikikamoukau flu. PMID- 3864054 TI - Results of treatment of cancer of the cervix in Wellington: 1975-9. AB - A review was undertaken of all patients treated for invasive carcinoma of the cervix in the Wellington region in the period 1975 to 1979. A total of 84 patients were assessed for the results and complications of treatment. Forty-one were stage I, 18 stage II, 18 stage III, and seven stage IV (FIGO staging). Treatment by different combinations of surgery and radiotherapy for each stage are described. Actuarial survival at five years is 54% for all stages. For stage I it is 86%, stage II 54%, and stage III 44%. There were only seven patients in stage IV. Seven patients (8.3%) suffered major complications, mainly gastrointestinal or genitourinary. Most complications occurred in patients treated with a combination of radical surgery followed by high dose external radiotherapy. This treatment should be reserved for selected patients who can be identified as having a very high risk of recurrence in the pelvis after surgery. Invasive cancer of the cervix is a highly treatable disease, with over half the patients surviving free of disease at five years, but screening programmes for early detection are essential. PMID- 3864055 TI - Botulism in New Zealand. AB - Two patients with botulism with recovery are described. These are the first reported cases in New Zealand. PMID- 3864056 TI - Pulmonary cryptococcosis: a report of two cases and review of the literature. AB - Two cases of primary pulmonary cryptococcosis are described. In both cases diagnosis was established using specimens obtained at bronchoscopy and in one case confirmed by detecting cryptococcal antigen. Knowledge of the natural history of the condition allowed rational decisions to be made regarding treatment. Difficulties surrounding the diagnosis and treatment of this unusual condition are discussed. PMID- 3864057 TI - Alcohol and coronary heart disease. PMID- 3864058 TI - Perinatal mortality in the Tuatapere practice area. AB - The perinatal mortality of the last 1500 deliveries from the Tuatapere general practice area was studied. The first 500 cases, 1964-70, had a perinatal mortality of 24/1000 births; second 500, 1970-76, a mortality of 14/1000 births; and third 500, 1977-84, mortality of 4/1000 births. PMID- 3864059 TI - Industrial injuries in a plant. AB - This is a five year study of types of lost-time industrial injuries in a plant dealing with paper manufacturing and timber production. Back injuries accounted for 26% of all lost-time work accidents. Thirty-three point six percent of all back injuries were due to lifting or pulling of timbers at work. This occurred mainly in the timber yard of the plant where heavy manual work occurred. Males up to the age of 35 accounted for about 60% of back injuries. They have a higher tendency to injure their backs than do older males who were longer and more experienced workers. Back injuries were uncommon in the female workers. They accounted for a mere 0.3% of all back injuries. They were mainly clerical workers or cleaners reflecting lighter nature of their work. This study helps the company to plan better occupational safety programmes to reduce work hazards. PMID- 3864060 TI - Volunteer blood donors for a cell pheresis programme. PMID- 3864061 TI - Education--the concern of the profession? Early postgraduate medical education. AB - Overall what is suggested is a tried and proven apprentice type system, with continuing role models, more stable patient care teams, defined educational objectives, all with some flexibility and a reduction in the tendency to over supply in specific areas. The transition would be difficult, it could not happen without change (already suggested) in the undergraduate curriculum and it would also require changes in other areas, peripheral to the areas of hospital organisation already discussed. The changes necessary for the full effect of these proposals to be felt, will be those occurring in medical society. The changes will be in the methods of practice, in organisation and payment and in the relationship of different parts of the profession (aiming for abolition of the dichotomy existing between primary care and the hospital), all sections taking an active part in planning and delivering medical education. A clear commitment must be made to continually evaluate medical education's performance and relevancy, connecting this to institutions (medical schools, hospitals, colleges etc) geared and prepared to respond. A reconstituted and reorientated Medical Council would be pivotal to this being successful. This two year spell inflicted on the young members just entering our profession is inexcusable in humanitarian terms, wasteful in educational terms, and ineffective in management terms. PMID- 3864062 TI - Fluoridation and dental decay. PMID- 3864063 TI - Cervical screening. PMID- 3864065 TI - The use of dexamethasone in asthmatic patients. PMID- 3864066 TI - Alcohol and the young. PMID- 3864064 TI - Post mortem diagnosis of hepatitis B infections. PMID- 3864067 TI - Hepatitis B vaccine and neonates. PMID- 3864068 TI - Tests for AIDS and counselling. PMID- 3864069 TI - Comparison of in vitro activity of cefpirome with cefoperazone. PMID- 3864070 TI - Chronic intractable pain syndromes. PMID- 3864071 TI - Childhood diabetes in the Auckland area. PMID- 3864072 TI - "Justice" is the new ICN watchword. PMID- 3864073 TI - Operating theatre management: purpose, priorities, people. PMID- 3864075 TI - Nursing. PMID- 3864074 TI - Occupational health work in the mining industry. PMID- 3864076 TI - ICN 18th Quadrennial Congress: Congress signals nursing's impact as a social force. PMID- 3864077 TI - ICN 18th Quadrennial Congress. Time to act, is now--keynote speaker. PMID- 3864078 TI - Quality assurance: accent on monitoring. PMID- 3864079 TI - Placental steroid sulfatase deficiency. PMID- 3864080 TI - Pragmatic information on bulimia. PMID- 3864081 TI - [High performance liquid chromatography of salivary amines]. PMID- 3864082 TI - [Optimal concentrations of nitrous-oxide and oxygen in inhalation sedation in dentistry]. PMID- 3864083 TI - [Antibody production by oral treponema (E-21, S-151-1)]. PMID- 3864084 TI - [Local anesthetic effect of phenol derivatives. 2. Eugenol and guaiacol]. PMID- 3864085 TI - [An anatomical study of Tupinambis nigropunctatus tongue]. PMID- 3864086 TI - [Radiological study of the effect of a hydroxyapatite ceramic-tricalcium phosphate implant in the jaw and the action of 1-alpha-hydroxycholecalciferol]. PMID- 3864087 TI - Smokeless tobacco: the new thing to chew on. PMID- 3864088 TI - Taste sensation in humans. PMID- 3864089 TI - Diagnostic challenges. Erosive and bullous lichen planus. PMID- 3864090 TI - Eruption disturbance due to an infected primary tooth. PMID- 3864091 TI - The current status of glass ionomer cements. PMID- 3864092 TI - Carving amalgam. PMID- 3864093 TI - Combined hydroxylapatite augmentation and lip-switch vestibuloplasty in the mandible. AB - A system in which hydroxylapatite is used for augmentation of the mandibular ridge in conjunction with vestibuloplasty is presented. This technique was found to have the benefit of combining a vestibular procedure with an augmentation procedure and thus avoiding an additional surgical operation. The results were uniformly good in the twelve cases presented. PMID- 3864094 TI - Bone scanning with 99mtechnetium phosphate to assess condylar hyperplasia. Report of two cases. AB - Condylar hyperplasia poses a problem in planning treatment because it is a self limiting process for some but not all patients. Continued growth creates a progressive deformity that requires condylectomy, whereas an enlarged condyle can be left in place after hyperplastic growth ceases, even if ramus surgery is needed to correct asymmetry. Bone scan with 99mtechnetium phosphate can be used to assist in making the differential diagnosis. In the two patients reported here, abnormal metabolic activity revealed by bone scans supported clinical and historical evidence that the condylar hyperplasia was active and required surgical correction, including condylectomy. The two cases demonstrate different approaches to postsurgical orthodontic treatment, depending on the amount of normal growth expected. PMID- 3864096 TI - Blastomycotic osteomyelitis of the mandible: successful treatment with ketoconazole. AB - Blastomycotic osteomyelitis of the mandible in a 40-year-old man was treated with ketoconazole for 26 months. Clinical, roentgenographic, and scintigraphic improvement was observed, and 13 months after cessation of treatment he remains free of disease. This case and three other previously reported cases indicate that ketoconazole is effective in the treatment of blastomycotic osteomyelitis. PMID- 3864095 TI - Orofacial involvement secondary to trapezius muscle trauma. AB - The case reported in this article demonstrates an unusual referral mechanism for signs and symptoms of the face and the oral cavity emanating from a traumatized trapezius muscle. A theory for this referral, based on central connections of nerves V, VII, IX, X, and XI, is proposed. PMID- 3864097 TI - Squamous cell carcinoma of the lip developing in discoid lupus erythematosus. AB - Since the substitution of steroids and antimalarials for irradiation in the treatment of discoid lupus erythematosus, squamous cell carcinoma arising in discoid lupus erythematosus is thought by some to be an uncommon occurrence. A review of the recent literature (subsequent to 1945) revealed fifteen cases, of which seven occurred in the lips. In one of twelve of the cases a history of irradiation was documented. In three other cases, there was no evidence of its use. We report an additional case of squamous cell carcinoma occurring in the lower lip of a 24-year-old black woman in the absence of radiation therapy. A review of the literature and a discussion of possible predisposing factors are presented. PMID- 3864098 TI - Lobular (polymorphous low-grade) carcinoma of minor salivary glands. A clinicopathologic study of twenty cases. AB - Twenty cases of a recently described adenocarcinoma of minor salivary gland- lobular carcinoma--are reviewed. This distinctive lesion occurs most frequently on the palate of patients in their sixth and seventh decades and displays no apparent sex or race predilection. Histomorphologically, the tumor is characterized by cytologic uniformity, bland nuclear chromatin, and low mitotic rate. Its lobular configuration and marked infiltrative tendency, often by single filed tumor cells, are reminiscent of lobular carcinoma of the breast. Follow-up data indicate a favorable prognosis and are in accord with findings of previous investigators. The possible relationship of this lesion to adenoid cystic carcinoma is discussed. PMID- 3864099 TI - Inherited craniofacial fibrous dysplasia. AB - Craniofacial fibrous dysplasia occurring in a mother and two of her three daughters is reported. In all three patients, the condition was characterized by extensive bilateral and bimaxillary involvement. All patients exhibited radiographic evidence of abnormal maxillary and mandibular bone and tooth displacement. Morphologic examination of deciduous teeth from the daughters showed replacement of normal pulp tissue by fibro-osseous lesion. Because of the familial occurrence of the cases, it is proposed that they comprise an example of inherited craniofacial fibrous dysplasia. PMID- 3864100 TI - Clear cell change in a calcifying odontogenic cyst. AB - A case of calcifying odontogenic cyst exhibiting clear cell change is described. Histomorphologic similarities to the clear cell type of calcifying epithelial odontogenic tumor were noted and the importance of differential diagnosis from clear cell types of salivary gland neoplasms and metastatic hypernephroma are emphasized. PMID- 3864101 TI - Replantation of avulsed teeth with immature root development. AB - Successful treatment of the avulsed tooth with immature root development is dependent on both pulpal and periodontal responses. The pulpal reaction is often one of revascularization with subsequent replacement of the necrotic pulp tissue. Continued root development and further calcification of the existing root structure are often seen with revitalization. The periodontal response to avulsion is dependent on the vitality of the periodontal ligament cells on the root surface. Normal healing occurs when the vitality is maintained, while replacement resorption results when the vitality is lost. Replantation after a short extra-alveolar period appears to provide the best prognosis for long-term retention of the avulsed tooth. PMID- 3864102 TI - Clinical observations regarding the treatment of traumatically avulsed mature teeth. Part 2. AB - Two documented cases involving avulsions of an incisor and a cuspid are reported. Long-term observations following replantations indicated factors in addition to those reported in Part 1 of this study. Endodontic metallic implants may retard the intrusive process. A fixed-bridge splint also appears to have retarded the ankylosis phenomenon. The three case reports in the two parts of this study indicated that splint time may not be a critical factor in the prognosis of replanted teeth. Calcium hydroxide failed to prevent early root resorption and eventual ankylosis in an early replantation case; the other two cases, with longer replant time, fared better without calcium hydroxide. Endodontic treatment of avulsed teeth soon after replantation is suggested; a time period of several weeks does not appear critical to the prognosis. Removal of the apical root segment prior to replantation does not appear to affect the replacement root resorption process. The reporting of long-term documented cases should be encouraged in order that replantation techniques may be evaluated. PMID- 3864103 TI - Radiographic image storage via laser optical disk technology. A preliminary study. AB - Radiographic images were stored on a laser optical disk and later displayed on a monitor in an attempt to assess the usefulness of this technology for archiving of radiographic images. The results of this study indicated that laser disk archiving of dental panoramic and bitewing radiographs is feasible and that this technology is also adequate for archiving certain medical and maxillofacial images. PMID- 3864104 TI - Computed panoramic tomography with scanning laser-stimulated luminescence. AB - A new imaging system for the dental field that combines recent advances in both the electronics and computer technologies was developed. It is a panoramic tomography process based on the newly developed laser-scan system and an imaging system featuring (1) clear images with abundant diagnostic information and wide latitude; (2) the possibility of new diagnostic methods through image-information processing; and (3) reduction of exposure to a minimum. PMID- 3864105 TI - Frontal sinus valentine. PMID- 3864106 TI - An unusual oral lesion. PMID- 3864107 TI - Duplication of the condyle. PMID- 3864108 TI - Mandibular advancement surgery. A study of the lower border wiring technique for osteosynthesis. AB - A study was undertaken to evaluate the effectiveness of osteosynthesis achieved by a lower border wire technique. Fifty patients who underwent mandibular advancement surgery were examined cephalometrically during 6 weeks of maxillomandibular fixation. A detailed analysis was made of spatial changes in the proximal and distal segments following bilateral sagittal-split osteotomies. PMID- 3864109 TI - Intramuscular hemangioma of the mentalis muscle. AB - Hemangiomas of skeletal muscle are relatively uncommon and often difficult to diagnose. In the head and neck, the masseter and trapezius muscles are most commonly reported as being involved. The cause of these lesions is unknown, although theories of development include trauma and abnormal sequestration of embryonic tissue. Treatment has included corticosteroids, sclerosing agents, radiation therapy, embolization, and surgical excision. A review of the literature and the first case report of hemangioma involving the mentalis muscle are presented. PMID- 3864110 TI - Bilateral coronoid hyperplasia resulting in severe limitation of mandibular movement. Report of a case. AB - A case of bilateral coronoid hyperplasia with limitation of mandibular motion in a female patient has been presented. Her symptoms began to develop around the age of 44. We believe that this is the first case to be reported in a female. Also, in all other reported cases symptoms began to develop around the onset of puberty. The literature has been reviewed with specific reference to the etiology of bilateral coronoid hyperplasia. This case brings the total number of reported cases to twenty-two. We hope that if similar cases are identified in female patients the practitioners will report them promptly. Only in this way will we be in a better position to understand the etiology of bilateral coronoid hyperplasia with special reference to heredity. PMID- 3864111 TI - Hemangioma of the maxillary sinus. AB - Hemangiomas of the maxillary sinus are rare. Hemangiomas of the maxillary sinus with an associated phlebolith have not been previously reported. Severe bleeding can occur upon surgical removal of hemangiomas. PMID- 3864112 TI - Unusual origins of the buccal and mylohyoid nerves. AB - Dissection of the mandibular nerve in a cadaver of southern Chinese origin showed the mylohyoid nerve arising from the lingual nerve and the buccal nerve arising from the inferior alveolar nerve within the mandibular ramus. It is estimated that this variation in the origin of the buccal nerve occurs in 6.1% of the southern Chinese population. PMID- 3864113 TI - Ossifying fibroma: a clinicopathologic study of sixty-four cases. AB - Sixty-four cases of neoplastic benign fibro-osseous lesions are presented, with clinical and radiographic follow-up in 23 instances. A marked predilection for female patients was observed, with the majority or cases arising in the molar premolar region of the mandible. Radiographically, these neoplasms are well demarcated and may be radiolucent, radiolucent with central opacification (target appearance), or multilocular radiolucent. A benign fibro-osseous histopathologic pattern is observed with osseous, cemental, and/or ovoid-curvoid calcified deposits. This feature, along with confinement to tooth-bearing regions, supports a periodontal ligament origin. It appears that the distinction between cementifying and ossifying variants is academic, as no behavioral differences exist. The recurrence rate following curettage was found to be 28%. PMID- 3864114 TI - Metastatic tumors of the mandibular condyle. Review of the literature and report of a case. AB - A metastatic tumor involving the mandibular condyle presented symptoms of temporomandibular joint (TMJ) dysfunction. Positive identification of the primary malignant lesion as prostatic adenocarcinoma was accomplished through the use of immunohistochemical stains for prostate-specific antigen and subsequent prostate biopsy. A review of the literature revealed fifteen additional cases of metastatic lesions of the mandibular condyle, seven of which also demonstrated TMJ-related symptoms as the initial manifestation of malignant disease. Such cases represent a diagnostic challenge, both clinically and microscopically. Symptoms of TMJ dysfunction coupled with radiographic evidence of a destructive lesion or pathologic fracture should suggest a possible malignant process indicating the need for biopsy. Subsequent examination of routine sections in combination with the use of selected stains, including immunohistochemistry may be helpful in identification of the primary tumor site. PMID- 3864115 TI - Oral candidiasis: forerunner of acquired immunodeficiency syndrome (AIDS)? AB - A 42-year-old man who used intravenous drugs had oral candidiasis and weight loss. Careful examination led to a diagnosis of AIDS. The patient subsequently died of disseminated cryptococcosis, systemic candidiasis, and polymicrobial bacteremia. The circumstances and progression noted in this case led to the recommendation that an aggressive screening for AIDS should be performed on patients at high risk for this syndrome who present with oral Candida infection. PMID- 3864116 TI - Analysis of endodontic therapy in patients irradiated for head and neck cancer. AB - The outcome of endodontic therapy in 16 patients irradiated for head and neck cancer was studied. Thirty-five postradiation endodontically treated teeth (54 roots) were included in the study. The follow-up period ranged from 6 months to 54 months. At the time of last follow-up, 46 of 54 roots were being maintained. No osteoradionecroses were seen in association with teeth that had been endodontically treated. From this review, it is clear that endodontic therapy is a viable method of treating diseased teeth in patients irradiated for oral neoplasms. PMID- 3864117 TI - A comparison of combinations of clinical and radiographic examinations in evaluation of a dental clinic population. AB - Panoramic periapical anterior and posterior bitewing radiographic, mirror explorer, and transillumination clinical examinations were performed on 300 patients. Various combinations of the radiographic and clinical examination techniques were compared in terms of their ability to diagnose caries, alveolar bone loss, calculus, periapical bone lesions, impacted teeth, root tips, and miscellaneous conditions. A mirror-explorer clinical examination with panoramic and posterior bitewing radiographs and either anterior bitewing radiographs or transillumination proved to be as efficient in the initial examination of patients as the mirror-explorer clinical examination with periapical and posterior bitewing radiographs. PMID- 3864118 TI - Recurrent fractures of the mandible. PMID- 3864119 TI - Primary bone tumors. PMID- 3864120 TI - Fighting for my leg--and my life. PMID- 3864121 TI - Case study: nursing care of a patient with osteogenic sarcoma. PMID- 3864122 TI - [Effect of prostaglandin E2 on the microvascular and cellular reactions in inflammation]. PMID- 3864123 TI - Primary bone tumours in infants. Short literature review and report of 10 cases. AB - Ten cases of primary bone tumours in infants (1 osteosarcoma, 3 Ewing's sarcoma, 1 chondroblastoma and 5 angiomatosis) are reported. All cases of angiomatosis showed characteristic radiographic findings. In all the other tumours the X-ray appearances were different from those usually seen in older children and adolescents. In the authors' opinion the precise diagnosis of malignant bone tumours in infancy is very difficult as no characteristic X-ray features are present in this age period. PMID- 3864124 TI - Infantile infectious sacroiliitis. AB - Two infants with pyogenic sacroiliitis are presented. In both babies, the clinical findings were initially attributed to septic arthritis of the ipsilateral hip. The correct diagnosis was not established in either infant until radionuclide scanning showed increased uptake in the ipsilateral sacroiliac joints. Both cases emphasize the importance of proceeding quickly to radionuclide imaging in the baby with clinical and laboratory findings of inflammation in the vicinity of the hip and a negative hip aspiration. PMID- 3864125 TI - Prevention of nurse impairment. PMID- 3864126 TI - Nursing in action--the future is now. Awards Banquet speaker October 19, 1985. PMID- 3864127 TI - Women and mental health: issues of special concern (first of two parts). PMID- 3864128 TI - Pre-menstrual syndrome (PMS). PMID- 3864129 TI - Boning up on exercise. PMID- 3864130 TI - [Termination of treatment of children with lymphoblastic leukemia after its recurrence]. PMID- 3864131 TI - [Encephalopathy in a child with lymphoblastic leukemia treated by an intensive method]. PMID- 3864132 TI - Lagos dental practitioners and prevention. An attitude survey. PMID- 3864133 TI - Infant bottle feeding and dental caries among small children in Dar es Salaam Tanzania. PMID- 3864134 TI - [African dentistry facing the challenge of health for all in the year 2000]. PMID- 3864135 TI - Dental caries and Streptococcus mutans in Sudanese schoolchildren. PMID- 3864136 TI - AIDS: is it a dentist's concern? PMID- 3864137 TI - [Periodontal disease in Benin]. PMID- 3864138 TI - [Simulation of mandibular movement on a dental articulator]. PMID- 3864139 TI - [Dental bioelectric processor, EM-2 and its clinical use (2)]. PMID- 3864140 TI - [Trends in clinical prosthodontics in the U.S.: an interview with Dr. Harold R. Ortman]. PMID- 3864141 TI - [Unusual cases of retained lower wisdom teeth]. PMID- 3864142 TI - [Perspectives in the differential diagnosis of eruption disorders of the lower wisdom teeth]. PMID- 3864143 TI - [Evaluation of the filling material Evicrol varnish]. PMID- 3864144 TI - [Etiology of retained teeth]. PMID- 3864145 TI - [Endodontics in Soviet dentistry]. PMID- 3864146 TI - [Evaluation of therapeutic methods in alveolitis sicca dolorosa]. PMID- 3864147 TI - [Oligosymptomatic form of Melkersson-Rosenthal's syndrome in a child (case history)]. PMID- 3864148 TI - [Hyperplastic gingivitis and leukemia (case-history)]. PMID- 3864149 TI - [A case of a so-called peripheral ameloblastoma in an epulis]. PMID- 3864150 TI - [Wound protection in open fractures of the palatal bone]. PMID- 3864151 TI - Lithium perhydroantamanide complex (2:1): exposure of the peptide backbone in the analog of antamanide with antitoxic impotency. AB - The synthetic analog of antamanide in which all four phenylalanyl residues are hydrogenated to cyclohexylalanyl (Cha) residues, cyclic(Val-Pro-Pro-Ala-Cha-Cha Pro-Pro-Cha-Cha), has a complete loss of antitoxic potency despite its ability to form ion complexes in the same manner as antamanide. The conformation of Li+.perhydroantamanide has been established in the present paper by x-ray diffraction analysis of a single crystal. The backbone encapsulates a Li+ ion in an almost identical manner as in Li+ antamanide. However, in Li+ antamanide the four phenyl groups are folded against the globular backbone, thus providing a hydrophobic surface for the complex, whereas in Li+ X perhydroantamanide the four cyclohexyl moieties are extended away from the folded backbone, resulting in the exposure of large portions of the polar backbone to the environment. As a consequence, four NH groups form hydrogen bonds with Br- ions, three C--O groups form hydrogen bonds with water molecules, and one C--O group makes a ligand to an additional external Li+ ion. The internal Li+ ion is pentacoordinated, whereas the external Li+ ion is tetracoordinated. The large change of the hydrophobicity around the midsection of the perhydroantamanide complex may be related to the biological inactivity. The content per asymmetric unit of the crystal is C64H102N10O10 X 2Li+ X 4H2O X 2CH3CN.2Br- in space group P2(1)2(1)2(1) with a = 21.740(7), b = 21.566(4), and c = 17.361(4) A. The agreement factor is 8.2% for 5135 data. PMID- 3864152 TI - Identification of Yb-glutathione-S-transferase as a major rat liver protein labeled with dexamethasone 21-methanesulfonate. AB - Dexamethasone 21-methanesulfonate, an affinity label for glucocorticoid-binding proteins, was incubated with rat liver cytosol preparations. The predominant covalently labeled component was identified as Yb-glutathione-S-transferase on the basis of chromatographic properties, electrophoretic mobility, and specific retention by an anti-Yb-immunoadsorbent. Affinity labeling of this protein was blocked by excess dexamethasone. Preferential reactivity of dexamethasone 21 methanesulfonate with the Yb subclass of glutathione-S-transferase (glutathione transferase, EC 2.5.1.18) was also evident with mixtures containing the multiple forms of the enzyme. Yb-glutathione-S-transferase, the nonsaturable glucocorticoid-binding component of rat liver cytosol should, therefore, be reclassified; because of its high concentration and selective interaction with steroids, this enzyme may be an intracellular glucocorticoid-binding protein and, thereby, influence transport, metabolism, and action of the steroids. PMID- 3864153 TI - Genes for skeletal muscle myosin heavy chains are clustered and are not located on the same mouse chromosome as a cardiac myosin heavy chain gene. AB - Myosin heavy chain (MHC) genes are expressed as several distinct isoforms in a tissue- and stage-specific manner; three skeletal muscle MHC isoforms appear sequentially during development. We have isolated cDNA clones, identified by RNA blot hybridization and by nucleotide sequence determination as coding for portions of the embryonic (pMHC2.2), perinatal (pMHC16.2A), and alpha(V1) cardiac (pMHC141 and pMHC101) MHC isoforms. These four probes and the adult skeletal MHC probe (pMHC32) have been used on Southern blots of genomic DNA to detect restriction fragment length polymorphisms defining the alleles for these genes in mouse species Mus musculus and Mus spretus. In this way, we followed the segregation of skeletal and cardiac MHC genes in 42 offspring resulting from an interspecies backcross. We found that the embryonic, perinatal, and adult skeletal MHC genes are clustered on chromosome 11 near the locus nude, the skeletal and cardiac MHC genes do not cosegregate, and the alpha(V1) cardiac MHC gene is located on chromosome 14 close to Np-1. This result is in contrast to that for other contractile protein genes such as the alkali myosin light chain and the actin multigene families, which are dispersed in the genome. PMID- 3864154 TI - The role of ascorbic acid in senile cataract. AB - The reductone ascorbic acid, present in the crystalline lens in concentrations higher than those of glucose, is capable of undergoing nonenzymatic "browning" in the presence of lenticular proteins. We studied the nonenzymatic browning with ascorbate in model systems employing bovine serum albumin and lens crystallins. When bovine serum albumin, alpha-crystallin, or gamma-crystallin was incubated with [14C]ascorbic acid, the formation of yellow and then brown condensation products appeared to correlate with increasing protein-associated radioactivity. The fluorescence spectrum of these products was similar to that of homogenates of human cataractous lenses. We suggest that the nonenzymatic reaction of lens crystallins with ascorbic acid may contribute, at least in part, to the color changes of aging lenses and to the physical lenticular deterioration leading to senile cataract. High dietary intake of ascorbic acid did not affect the fluorescence spectrum of murine lenses; thus, we assume that the speed and extent of the lenticular browning reactions must depend on a deterioration of other factors of the multicomponent antioxidant system of the eye. PMID- 3864155 TI - Identification of three classes of cytosolic glutathione transferase common to several mammalian species: correlation between structural data and enzymatic properties. AB - The major isoenzymes of cytosolic glutathione transferase (EC 2.5.1.18) from rat, mouse, and man are shown to share structural and catalytic properties that can be used for species-independent classification. Rat, mouse, and human isoenzymes were grouped with respect to amino-terminal amino acid sequences, after correlation of seven structures analyzed in the present investigation with structures determined earlier. The isoenzymes were also characterized by substrate specificities and sensitivities to inhibitors, and the data were subjected to pattern recognition analysis. In addition, the various isoenzymes were tested for cross-reactivity by immunoprecipitation with antibodies raised against rat and human transferases. The different types of data were clearly correlated and afforded an unambiguous division of the isoenzymes into three classes named alpha, mu, and pi. Each of the three mammalian species studied contains at least one isoenzyme of each class. It is suggested that the similarities of the isoenzymes in a class reflect evolutionary relationships and that the classification applies generally. PMID- 3864156 TI - A model for actin polymerization and the kinetic effects of ATP hydrolysis. AB - A model for actin polymerization is proposed in which the rate of elongation of actin filaments depends on whether adenosine 5'-triphosphate or adenosine 5' diphosphate is bound to the two terminal subunits of the filament. This model accounts quantitatively for the experimental data on the kinetics of filament elongation and explains the effect of ATP hydrolysis on actin polymerization. PMID- 3864157 TI - Isolation and partial characterization of a Mr 32,000 protein with inhibin activity from porcine follicular fluid. AB - A Mr 32,000 protein with inhibin activity was isolated from porcine follicular fluid by heparin-Sepharose affinity chromatography, gel filtration on Sephacryl S 200, and four reversed-phase HPLC steps. The isolated molecule is composed of two chains having molecular weights of 18,000 and 14,000, respectively, and bound together by disulfide bonds. Amino acid sequence analysis revealed the 10 NH2 terminal residues of the Mr 18,000 chain to be Ser-Thr-Ala-Pro-Leu-Pro-Trp-Pro Trp-Ser- and those of the Mr 14,000 chain to be Gly-Leu-Glu-Xaa-Asp-Gly-Arg-Thr Asn-Leu-. This Mr 32,000 protein specifically inhibits the basal secretion of FSH, but not that of LH, in the rat anterior pituitary monolayer culture system, with a half-maximal effective dose of 450 pg/ml. PMID- 3864158 TI - Photoaffinity labeling of diphtheria toxin fragment A with NAD: structure of the photoproduct at position 148. AB - Irradiation of mixtures of diphtheria toxin fragment A and [carbonyl-14C]NAD with UV light (253.7 nm) is known to induce efficient transfer of the radiolabel to position 148, corresponding to glutamic acid in the unmodified protein. Here we report the structure of the photoproduct at position 148, as determined by chemical and photochemical methods, fast-atom-bombardment mass spectrometry, and nuclear magnetic resonance. The photoproduct [an alpha-amino-gamma-(6-nicotin amidyl)butyric acid residue] contains the entire nicotinamide moiety of NAD linked via its number 6 carbon to the decarboxylated gamma-methylene carbon of Glu-148. No portion of the ADP-ribosyl group of NAD is present. These findings are consistent with the idea that Glu-148 lies at or near the catalytic center of diphtheria toxin. PMID- 3864159 TI - Expression of biologically active bovine luteinizing hormone in Chinese hamster ovary cells. AB - Biologically active bovine luteinizing hormone (LH) has been obtained through expression of the alpha- and LH beta-subunit genes in stably transformed clones of DUXB11, a Chinese hamster ovary cell line deficient in dihydrofolate reductase (DHFR). Expression of alpha-and LH beta-subunit mRNAs of the expected sizes (approximately 910 and 770 nucleotides, respectively) were revealed by blot analysis after electrophoresis of total cellular RNA. Furthermore, presence or absence of the gonadotropin mRNAs in several clonal lines was directly correlated with the appearance of one or both bovine LH subunits in the culture medium. Media from three clones secreting significant immunoreactive levels of both subunits also stimulated the release of progesterone in ovine luteal cells, suggesting that the secreted LH was assembled into a biologically active and glycosylated dimer. Immunoprecipitation and NaDodSO4/PAGE of [35S]methionine labeled proteins secreted from one of the clones, CHODLH20, further confirmed the presence of an alpha/beta dimer with apparent subunit molecular weights of 20,500 and 16,000, only slightly higher than those of pituitary alpha and LH beta subunits. PMID- 3864160 TI - Molecular cloning and nucleotide sequence of human glucocerebrosidase cDNA. AB - Mutations in the human glucocerebrosidase gene cause Gaucher disease. A cDNA clone containing the entire human glucocerebrosidase coding region from normal cells has been isolated using lambda gt11 expression libraries. The complete nucleotide sequence, a restriction map, and a hydropathy profile are presented. Hybridization to chromosome-specific DNA localizes the human glucocerebrosidase gene to chromosome 1. The likely precursor protein is 515 amino acids long. The NH2-terminal 19 amino acids constitute a leader sequence that is cleaved from the mature protein. The predicted molecular weight of the mature protein is 55,384, without glycosylation or carboxyl-terminal processing. PMID- 3864161 TI - Electron microscopic observation of domain movement in reconstituted erythrocyte membranes. AB - The movement of labeled concanavalin A (Con A) receptors in reconstituted human erythrocyte membranes was observed directly in an electron microscope, using an environmental stage that kept the sample fully hydrated at all experimental temperatures. Human erythrocyte membrane ghosts were spread on the air/water interface in a Langmuir trough. The surface monolayer film contained most native proteins and lipids of the erythrocyte membrane. The Con A receptors in the film were labeled with Con A-conjugated, 25-nm-diameter gold microspheres. Unsupported bilayer membranes were reconstituted by dipping a 1000-mesh grid through the labeled surface film. The reconstituted membrane samples were observed under low beam current and photographed by timed exposures with sensitive x-ray films. The total radiation per exposure was kept below the damage threshold of 5 X 10(-4) coulomb/cm2. The Con A-gold labels were observed to move in unison within local areas (domains) of the reconstituted membrane. The size of the domains and the velocity of the labels were measured as functions of temperature. The typical domain size was 10 micron2 and the typical velocity of the labels was 7 nm/sec. The minimum domain size and velocity were found at 17 degrees-28 degrees C. Reduction of the amount of cholesterol in the precursor erythrocyte membrane caused the domain velocity at 7 degrees C to decrease and the domain size to increase; the opposite effect was observed with cholesterol enrichment. The results indicate that the components of the erythrocyte membrane tended to form moving domains and that the motion was related to lipid phase separation in the bilayer. PMID- 3864162 TI - Mutagenesis of the lac promoter region in M13 mp10 phage DNA by 4'-hydroxymethyl 4,5',8-trimethylpsoralen. AB - Double-stranded M13 phage DNA (M13 mp10 replicative form) was photoreacted with 4'-hydroxymethyl-4,5',8-trimethylpsoralen, using light of wavelength greater than 320 nm or greater than 390 nm to generate predominantly crosslinks or monoadducts, respectively. The damaged DNAs were scored for inactivation and mutagenesis after transfection into Escherichia coli. The appearance of light blue or colorless plaques on indicator medium showed that mutation had occurred in the lac insert of the viral DNA. A comparison of the consequences of the two phototreatments with psoralen supports the idea that crosslinks are both more lethal and more mutagenic than monoadducts. Numerous mutant clones partially or totally deficient in beta-galactosidase were plaque-purified and amplified. The viral DNA of each clone was sequenced by the dideoxy chain-terminating procedure. All of the observed base-pair changes were mapped to the lac promoter region and consisted of 3 transition, 14 transversion, and 6 single base-pair frame-shift mutations. The predominant mutation was a T.A----G.C transversion. PMID- 3864163 TI - Cloning of Ly-5 cDNA. AB - A notable feature of Ly-5, among immunogenetic systems that identify glycoproteins of the cell surface and define the surface phenotype of cells according to their lineage, is that the Ly-5 locus specifies a range of molecular isoforms that distinguish cells of different stages and branches of hematopoietic development. The composition of the Ly-5 locus is of much interest in regard to how these isoforms are constructed and differentially regulated according to cell lineage. We describe here a cDNA clone, pLy-5-68, that identifies Ly-5. The Ly-5 specificity of the pLy-5-68 clone was first indicated by a restriction fragment length polymorphism (RFLP), which in Southern blotting distinguishes genomic DNA of C57BL/6 (B6) mice (Ly-5a) from that of B6-Ly-5b congeneic mice whose genome is the same as B6 except for the segment of chromosome 1 that bears Ly-5b. For the following reasons it is unlikely that pLy-5-68 represents a gene linked to Ly-5 that was carried over with Ly-5b during serial backcrossing to make the B6-Ly-5b congeneic strain. In all mouse strains tested, the serological Ly-5 allotype (Ly 5.1 vs. Ly-5.2) accorded with the RFLP pattern. Cells of the ST/bJ mouse strain have unique Ly-5 serological reactions and ST/bJ DNA gives a unique (third) RFLP pattern (Ly-5c) with pLy-5-68. All Ly-5+ cell types reacted positively with pLy-5 68 in RNA transfer blotting, and all Ly-5- cell types tested did not. The difference in size of mRNA reactive with pLy-5-68 in cells expressing the 200-kDa Ly-5 isoform as compared with cells expressing the 220-kDa Ly-5 isoform corresponded with the difference in size of the protein components of those isoforms. PMID- 3864165 TI - How infant and mother jointly contribute to developing cognitive competence in the child. AB - Infants who processed visual information more efficiently and had mothers who more frequently encouraged them to attend to properties, objects, and events in the home environment in the first 6 months of life excelled in verbal development during their second year and scored higher on a conventional psychometric assessment of intelligence at 4 years. These results, confirmed over several studies, support the idea of continuity in mental development from infancy and begin to specify parental didactic activities that may most efficaciously promote cognitive achievement in young children of different ages. PMID- 3864166 TI - Standardization of lipid and lipoprotein determinations for pediatric screening procedures. AB - Standardization of lipid and lipoprotein measurements is of concern to laboratories that serve pediatric as well as adult populations, since preventive measures taken during pediatric years can help control atherosclerotic cardiovascular problems that can arise during adult years. Multiple analytical and physiologic problems that exist inherently in the lipids and lipoproteins and in application of measurements to the pediatric population must be controlled to gain standardization and produce highly precise and accurate results. Reference values from well-described, observed pediatric populations have been published for use in interpreting analytical results. In collaboration with NHLBI, the CDC has offered lipid and lipoprotein standardization services for the United States since 1957 and, on an international scale, has cooperated with WHO since 1962. Standardization activities have been primarily concerned with total and HDL cholesterol and triglyceride determinations for cardiovascular epidemiologic and clinical trial investigations. PMID- 3864164 TI - Expression of preproenkephalin-like mRNA and its peptide products in mammalian testis and ovary. AB - The distribution of preproenkephalin mRNA and proenkephalin-derived peptides have been examined in gonadal tissues from rats, hamsters, and cattle. A preproenkephalin mRNA band was detected in the ovaries of all three species and in hamster testis that is identical in size to the 1450-nucleotide mRNA typically found in tissues that express proenkephalin. Rat testis, on the other hand, expresses at least one preproenkephalin-like mRNA that is substantially greater in size (1900 nucleotides). [Met]enkephalin-containing peptides were also detected in each of the gonadal tissues examined. Although the abundance of preproenkephalin-like mRNA in rat testis was comparable to that in rat brain, the testicular content of proenkephalin-derived [Met]enkephalin sequences was less than 4% of the rat brain content. Together these data suggest that preproenkephalin-like mRNA in rat testis is not efficiently translated, proenkephalin-derived peptides undergo rapid turnover in this tissue, or the mRNA in rat testis has a frameshift resulting in an altered coding sequence. PMID- 3864167 TI - Prostaglandin E1 infusion therapy in chronic glomerulonephritis--a double-blind, crossover trial. AB - Nine patients with chronic glomerulonephritis were investigated in a controlled, double-blind, crossover study to assess the efficacy of prostaglandin E1 (PGE1) infusion therapy. Three-hour intravenous infusions of PGE1 (100 micrograms/day) and placebo were performed every day for three weeks, respectively. Improvement of renal function was demonstrated by statistical u-test (p less than 0.01) and x2-test (p less than 0.05). Three weeks infusion of PGE1 tended to increase creatinine clearance. PGE1 infusion significantly decreased the serum level of creatinine as compared with the placebo infusion (p less than 0.05). The urinary excretion of protein, however, did not change with PGE1. It was concluded that PGE1 infusion is effective in improving renal function in patients with chronic glomerulonephritis. PMID- 3864168 TI - Effect of potassium loading on prostaglandin E2 and F2 alpha excretion in the Brattleboro rat. AB - In order to assess the relative roles played by potassium (K) and the antidiuretic hormone (ADH) on the renal production of prostaglandins (PG) E2 and F2 alpha, the 24 hour urinary excretion of these substances was measured in Brattleboro rats (devoid of ADH) and in control Long Evans heterozygote rats. Rats of each strain received either a normal K intake or a K load for 8 days. Urinary PGE2 and PGF2 alpha were measured by radioimmunoassay in three consecutive 24 h urine collections obtained after the above periods. K loading induced an increase in PGF2 alpha (p less than 0.01), PGE2 showing a non significant trend to decrease. The E/F ratio was decreased in K loaded animals. The changes were qualitatively similar in presence or absence of ADH, but animals with diabetes insipidus had lower levels of PGs than control animals. The results suggest the possibility that K loading induces an increase in the activity of the renal enzyme PGE2-9-ketoreductase. The resulting increase in PGF2 alpha could play a role in K excretion and this response is probably independent of ADH. PMID- 3864169 TI - Rat's vessel wall generates an antiaggregatory substance independent of prostacyclin production. AB - We have investigated whether the vessel wall may release or synthetize some substance able to modify the platelet function independent of prostacyclin (PGI2) production. Twenty female rats were injected with indomethacin. 18 hours after the injection animals were sacrificed and rings cut from thoracic and abdominal aorta were obtained. They were incubated in Krebs solution for different periods of time after which an aliquot from the indomethacin treated rat's aortic ring (ITRAR) was assayed on platelet aggregation induced by several agonists. The supernatant from the 40 min. incubation mixture of ITRAR released a substance which completely inhibits platelet aggregation induced by arachidonic acid (AA), ADP, epinephrine, collagen, ristocetin and thrombin. The time of appearance of the substance varied with a mean of 17 min.. It is released with and without AA stimulation. Once generated it is active for at least three hours; its antiaggregating activity remains even if it is boiled for 15 sec, incubated at 37 degrees C, or if the vessel is treated with tranylcypromine. Platelet aggregation inhibition is still evident if the supernatant from ITRAR is transferred to a platelet rich plasma (PRP) from a normal donor who had taken an aspirin 24 hours before sampling. All these results indicate that this substance released from ITRAR is not prostacyclin. Nordihydroguaiaretic or eicosatetraynoic acid which are lipoxygenase inhibitors could not modify the ITRAR's release; nor did mepacrine which is a phospholipase inhibitor. Since mepacrine does not completely inhibit phospholipase activities we cannot exclude the possibility that the substance is derived from AA. More studies are in progress to elucidate the biochemical properties of this substance. PMID- 3864170 TI - Plasma concentrations and anti-platelet effects after low dose acetylsalicylic acid. AB - The present study has investigated whether low-dose acetylsalicylic acid (ASA) can inhibit platelet aggregation locally at its site of gastrointestinal absorption without concentrations in the systemic circulation high enough for inhibition of cyclooxygenase. For this purpose platelet aggregation, thromboxane formation as well as ASA plasma concentrations were measured in 8 volunteers before oral intake of 100 mg ASA as well as 20 to 300 minutes thereafter. At each time 5 ml of blood were mixed with 5 ml of blood obtained from a second, untreated volunteer. Aggregation and thromboxane formation were also determined in these mixed blood samples. The same protocol was performed with 4 volunteers after administration of 1500 mg ASA as well as after no drug intake. In a separate experiment the concentration-effect-relationship of ASA was assessed in vitro. One hundred and forty minutes after administration of 100 mg ASA aggregation and thromboxane formation were significantly decreased to 49.4 and 4.5% of the initial values, respectively, whereas in the mixed blood sample aggregation was not impaired. Inhibition of thromboxane formation was constantly 73% of the inhibition observed in the unmixed sample throughout the study period and thus most probably was caused by dilution of the platelets of the untreated volunteer by the inactivated platelets of the ASA-treated volunteer. These data suggest the absence of pharmacologically active drug concentrations in the peripheral blood. ASA plasma concentration was highest after 40 minutes (2.2 +/- 1.6 microgram/ml; n = 5). After the 1500 mg ASA dose platelet function and thromboxane formation decreased to 29.8 and 2.0% of the initial values, respectively. Furthermore, aggregation and thromboxane formation in the mixed blood sample were markedly reduced. Thus, after the high dose of ASA effective plasma concentrations were present in the peripheral circulation. Highest ASA plasma concentrations were 21.1 +/- 8.9 micrograms/ml. IC50 values were 1.00 +/- 0.36 and 0.30 +/- 0.05 microgram/ml for aggregation and thromboxane formation in vitro, respectively. It is concluded that low dose ASA can effectively inhibit platelet function without producing pharmacologically active concentrations in the peripheral circulation. PMID- 3864171 TI - Inhibitory action of quercetin on xanthine oxidase and xanthine dehydrogenase activity. AB - Quercetin is an equally good inhibitor of xanthine oxidase (type O, oxygen reducing enzyme) and xanthine dehydrogenase (type D, NAD+-reducing enzyme) activity of a preparation of the xanthine-oxidizing enzyme partially purified from rat liver. The inhibition seems competitive with the oxidase form and non competitive (mixed-type) with the dehydrogenase form of the enzyme. These inhibitory properties should be referred to the flavonoid structure of quercetin rather than to its antioxidant power. The antioxidant properties of quercetin and its inhibitory effect on the xanthine-oxidizing enzyme are discussed with reference to hyperuricemic and ischemic states. PMID- 3864172 TI - Failure to demonstrate early metabolic changes in weanling growth-retarded hypophagic rats with lesions in the dorsomedial hypothalamic nuclei. AB - Experiment 1: Weanling male rats received bilateral electrolytic lesions in the dorsomedial hypothalamic nuclei (DMNL rats); sham-operated animals served as controls. Rats were killed four hours and three and seven days postoperatively (post-op). Plasma was obtained and epididymal fat pads, diaphragm and liver aliquots were harvested and the in vitro incorporation of U-14C-glucose into CO2, glycogen, lipid and saponifiable fatty acids (FAs) were measured. Body weight, carcass lipid and food intake were significantly lower in DMNL rats than in controls. The only significant lesion-induced metabolic changes were hypoglycemia and greater tracer incorporation into epididymal fat pad lipid and diaphragm glycogen. Both DMNL rats and controls showed similar time courses of tracer incorporation into epididymal CO2 and FAs, diaphragm lipid and liver CO2, glycogen, lipid and FAs. Lesioned rats also showed more pronounced decreases of tracer incorporation from day 0 to day 3 in epididymal glycogen and lipid and diaphragm CO2 and glycogen. These data make it appear unlikely that very early deficits in glucose metabolism are the cause of the growth retardation seen in long-term studies with DMNL rats. The data also demonstrate considerable locus specificity, since weanling rats with ventromedial hypothalamic lesions (VMNL rats) in similar short-term studies have shown dramatic alterations in the above parameters. Experiment 2: Weanling DMNL rats and sham-operated rats were injected via tail vein with tritiated water one hour post-op. One hour after the injection they were decapitated. There were no significant differences between DMNL rats and controls in mumoles tritiated water incorporated into total liver, grams liver tissue, mg liver glycogen and ml or mg plasma glucose.(ABSTRACT TRUNCATED AT 250 WORDS) PMID- 3864173 TI - A Negative Symptom Rating Scale. AB - Renewed interest in the role of negative symptoms in "defect state" schizophrenia calls for the design of a standardized, easy to use, reliable, and valid instrument to assess these aspects of psychopathology. In order to measure negative symptoms, we developed the Negative Symptom Rating Scale (NSRS). We report on the design, interrater reliability, and construct-validation of NSRS against the most frequently used negative symptom scales or subscales. In summary, the NSRS is a short, sensitive, highly specific, reliable, and apparently valid instrument for measuring negative symptoms in schizophrenia. PMID- 3864174 TI - The treatment validity of DSM-III melancholic subtyping. AB - Because melancholic subtyping is associated with pretreatment symptom severity, the type of data-analytic technique used in examining treatment validity may affect one's conclusions. We examined the relationship between the presence or absence of melancholia and the response to electroconvulsive therapy (ECT) in 87 depressed inpatients. Depending on the definition of improvement used, melancholic subtyping was either not associated with ECT response, or non melancholics had a better outcome than melancholics. We suggest that standard methods of outcome evaluation be required in therapy outcome studies. PMID- 3864175 TI - Iowa Discriminant Index for endogenous depression: family history correlates. AB - We examined the risk of psychiatric illness in the first-degree relatives of the 257 depressed inpatients upon whom we constructed the Iowa Discriminant Index (IDI) for endogenous depression. Nonendogenous depressives had a higher rate of alcoholism and antisocial personality in their families. IDI endogenous subtyping was not associated with a family history of depression. These results provide additional support for the validity of the empirically derived IDI. PMID- 3864177 TI - On the origin of early REM episodes in the sleep of depressed patients: a comparison of three hypotheses. AB - Shortened latency of rapid eye movement (REM) sleep is a feature frequently observed in depressed patients. Three hypotheses on the origin of early REM sleep episodes propose that short REM latency is due to (1) a phase-shift of one subset of the circadian rhythms relative to other circadian rhythms, (2) a loss of inhibition of REM sleep due to a slow wave sleep deficit, or (3) a reduction in amplitude of a putative circadian arousal cycle. From an analysis of experimental data, it is concluded that the hypothesis of a reduced circadian amplitude best explains the early occurrence of REM sleep. PMID- 3864176 TI - Circadian rhythms in endogenous depression. AB - A comprehensive study of circadian rhythms was carried out in 16 drug-free patients with endogenous depression, 10 of whom were reinvestigated after clinical remission, and 10 healthy controls. No free-running periods were observed in body temperature, urinary excretion of potassium and free cortisol, or any other variable. Moreover, there was little, if any, indication of phase advance. The circadian variation of several variables was reduced during depression, e.g., motor activity, body temperature, and (less markedly) urinary potassium, but not cortisol. The circadian worsening of mood tended to occur around the time of awakening during depression, i.e., several hours later than after remission or in normal controls. In patients with circadian variation of self-rated mood, the acrophase of this variable correlated significantly with that of urinary free cortisol. This indicates an entrainment of the disease process to the circadian rhythm of cortisol secretion, probably via circadian variations of neurotransmitters in the hypothalamus. The other circadian phenomena observed in depression can adequately be explained by masking effects (negative or positive) of psychopathological symptoms (e.g., early morning awakening) on overt circadian rhythms. PMID- 3864178 TI - A comparison between the growth hormone responses to amphetamine and clonidine. PMID- 3864179 TI - Treatment of ectopic permanent molar eruption--case report. PMID- 3864180 TI - Diagnosis and treatment of pemphigus. PMID- 3864181 TI - Occlusal restoration using fissure sealant instead of "extension for prevention". PMID- 3864182 TI - Proximal margin adaptation: a comparison between conventional and slice inlay preparations. PMID- 3864183 TI - The curing of denture acrylic resins by microwave energy. Physical properties. PMID- 3864184 TI - Quality assessment and third party payments: a simulation for undergraduate dental students. PMID- 3864185 TI - Occlusion and articulation. PMID- 3864186 TI - [Diagnostic value of gallium scintigraphy in pulmonary diagnosis]. PMID- 3864187 TI - Intrathoracic metastasis from an extrathoracic malignancy: a radiographic approach to patient evaluation. AB - The likelihood of metastatic spread of an extrathoracic primary tumor to the thorax depends on a number of factors, most importantly, the site and nature of the primary tumor. Although the plain chest radiography remains the first-line screening procedure, understanding the pattern of spread of various tumors and the frequency with which such spread occurs enables one to develop a rational approach to the use of other imaging modalities, particularly computed tomography, in evaluation of patients with known extrathoracic primary tumors. PMID- 3864188 TI - [X-ray guided punch biopsy of the spinal column]. AB - Roentgenographically visible lesions of the skeleton are subjects for microscopy if the nature of the lesion is uncertain. In particular, the vertebral column, as it lies so deeply, needs a major surgical intervention if an excision has to be performed. The radiologically guided trephine biopsy, in contrast, is a great simplification for the patient. Using the Jamshidi-needle, 57 bone biopsies were performed. In 53 cases a reliable pathologic diagnosis was obtained by microscopy. Bacteriology, however, was positive in only 5 out of 23 cases with spondylitis or spondylodiscitis. No complications were observed. PMID- 3864189 TI - Invasive pulmonary aspergillosis in acute leukemia: characteristic findings on CT, the CT halo sign, and the role of CT in early diagnosis. AB - Invasive pulmonary aspergillosis (IPA) in immunocompromised patients is often difficult to diagnose. Many pathogens present initially with similar, nonspecific pulmonary findings. Air crescent formation has been reported to be highly suggestive of IPA in the appropriate clinical setting, but this is a late sign in an otherwise rapidly fatal infection. The authors reviewed the available chest computed tomography (CT) scans of nine patients with acute leukemia and documented IPA, including four patients with serial scans obtained during the course of infection. Typical CT findings of IPA were multiple inflammatory nodules, often with one large dominant mass, or a single peripheral masslike infiltrate. Cavitation or air crescent formation occurred late in the course of infection, usually at the time of bone marrow recovery from chemotherapy. CT scans obtained early in the course of infection in two patients demonstrated a distinctive feature of one or more pulmonary masslike infiltrates surrounded by a halo of low attenuation. These lesions subsequently progressed to cavitation or air crescent formation typical of IPA. While this CT halo sign may not be pathognomonic for Aspergillus, seen in the appropriate host, it may suggest early on the possibility of IPA. PMID- 3864190 TI - Metabolic fate of endogenously synthesized prostaglandin D2 in a human female with mastocytosis. AB - Increased production of prostaglandin D2 was recently demonstrated in patients with systemic mastocytosis. One female patient investigated with mastocytosis was found to have overproduction of prostaglandin D2 of such magnitude (150-fold above normal) that it provided the unique opportunity to delineate the metabolic fate of endogenously synthesized prostaglandin D2. A five percent aliquot of a twenty-four hour urine collection from this patient was extracted, purified by silicic acid chromatography, methylated, and finally subjected to high pressure liquid chromatography. Column fractions collected were derivatized and analyzed by gas chromatography-mass spectrometry. Increased quantities of sixteen urinary metabolites were identified and included a series of metabolites retaining the PGD-ring as well as a series of metabolites with a PGF-ring. PGF-ring metabolites were excreted in approximately 4-fold greater relative abundance than PGD-ring metabolites. More than one apparent isomeric form of some PGF-ring metabolites were found. The predominant urinary metabolite was 2,3-dinor-prostaglandin F2. This study provides evidence that endogenously synthesized prostaglandin D2 is converted in substantial part to prostaglandin F2 metabolites in vivo in humans. PMID- 3864191 TI - Salicylate nephropathy in the Gunn rat: potential role of prostaglandins. AB - We examined the potential role of prostaglandins in the development of analgesic nephropathy in the Gunn strain of rat. The homozygous Gunn rats have unconjugated hyperbilirubinemia due to the absence of glucuronyl transferase, leading to marked bilirubin deposition in renal medulla and papilla. These rats are also highly susceptible to develop papillary necrosis with analgesic administration. We used homozygous (jj) and phenotypically normal heterozygous (jJ) animals. Four groups of rats (n = 7) were studied: jj and jJ rats treated either with aspirin 300 mg/kg every other day or sham-treated. After one week, slices of cortex, outer and inner medulla from one kidney were incubated in buffer and prostaglandin synthesis was determined by radioimmunoassay. The other kidney was examined histologically. A marked corticomedullary gradient of prostaglandin synthesis was observed in all groups. PGE2 synthesis was significantly higher in outer medulla, but not cortex or inner medulla, of jj (38 +/- 6 ng/mg prot) than jJ rats (15 +/- 3) (p less than 0.01). Aspirin treatment reduced PGE2 synthesis in all regions, but outer medullary PGE2 remained higher in jj (18 +/- 3) than jJ rats (9 +/- 2) (p less than 0.05). PGF2 alpha was also significantly higher in the outer medulla of jj rats with and without aspirin administration (p less than 0.05). The changes in renal prostaglandin synthesis were accompanied by evidence of renal damage in aspirin-treated jj but not jJ rats as evidenced by: increased incidence and severity of hematuria (p less than 0.01); increased serum creatinine (p less than 0.05); and increase in outer medullary histopathologic lesions (p less than 0.005 compared to either sham-treated jj or aspirin-treated jJ). These results suggest that enhanced prostaglandin synthesis contributes to maintenance of renal function and morphological integrity, and that inhibition of prostaglandin synthesis may lead to pathological renal medullary lesions and deterioration of renal function. PMID- 3864192 TI - Inhibition of noradrenaline-stimulated 86Rb/K+-exchange in vascular smooth muscle by porcine vasorelaxant atrial peptide, cardiodilatin-88. PMID- 3864193 TI - Platelet calmodulin concentration and phospholipase A2 activity in essential hypertension. PMID- 3864194 TI - A circulating hypertensive factor in spontaneously hypertensive rats and its effects on intracellular free calcium. PMID- 3864195 TI - The excitatory action of morphine on rat cortical neurons is mediated by a post synaptic mechanism. PMID- 3864196 TI - A hormone-like protein from the pituitary gland inhibits intestinal hypersecretion induced by cholera toxin. PMID- 3864197 TI - Angiotensin increases inositol phosphate content in anterior pituitary cells in culture: a relationship with its prolactin-stimulating activity. PMID- 3864198 TI - Stimulation of the Na+,K+-cotransport system by arginine vasopressin in human red cells. PMID- 3864199 TI - The influence of bradykinin on intracellular Ca++-activity in cultured neural cells. PMID- 3864200 TI - Field testing of microorganisms modified by recombinant DNA techniques: applications, issues, and development of "points to consider" document. PMID- 3864201 TI - Human gene therapy. PMID- 3864202 TI - The role of the NIH in fostering leadership in biotechnology. PMID- 3864203 TI - Plant-associated agricultural applications of genetically engineered microorganisms: projections and constraints. PMID- 3864204 TI - [Mechanism of 67Ga uptake by an experimental abscess--permeability of plasma from blood vessels in abscessed tissue]. AB - In the previous paper, we reported that 67Ga was accumulated in abscess and uptake rate of 67Ga in abscess increased with time after the injection of 67Ga citrate. The present study was undertaken to elucidate the influence of blood flow on the accumulation of 67Ga in abscess. Five days after subcutaneous injection of 0.2 ml of turpentine to the rats, 131I-human serum albumin (HSA) was injected intravenously to the rats. At an appropriate time after the injection (10 min to 6 days), uptake rates of 131I-HSA in abscess and normal tissues were measured. Similarly, 51Cr-red blood cells (RBC) were injected intravenously to the above rats and the uptake rates of 51Cr-RBC were also measured. One, three, and 24 hours after injection of 131I-HSA, the uptake rates of 131I-HSA in abscess were 1.32 %dose/g, 1.84 %dose/g, and 0.82 %dose/g, respectively. However, the uptake rates of 51Cr-RBC in abscess was very small, and the value was 0.14 %dose/g at 24 hours after the injection. In the case of abscess, blood in the tissue fluid was very little, but the permeability of 131I-HSA from the blood vessel in the tissue was much larger than that of normal tissues. From these facts, it was deduced that the accelerated permeability caused the abscess accumulation of 67Ga. PMID- 3864205 TI - [Fever of unknown origin. Usefulness of gammography with gallium-67 citrate]. PMID- 3864206 TI - Comparative actions of pentobarbital and verapamil on canine cerebral and peripheral arteries in vitro. AB - Verapamil and pentobarbital were compared for their actions on isolated canine cerebral (basilar and middle cerebral) and peripheral (mesenteric) arteries of similar diameter. The two agents shared several nonselective actions on canine arteries, but differed widely in potency. Both agents produced direct relaxation of cerebral, but not peripheral, arteries, and both agents inhibited constriction of cerebral and peripheral arteries by KCl and CaCl2 (in K+-depolarizing, Ca2+ deficient media). However, 1 mM pentobarbital was required to produce the same maximal effects as 4 uM verapamil. In addition, verapamil selectively blocked constriction of cerebral arteries by a receptor-mediated agent, prostaglandin F2a, while pentobarbital was nonselective in its blockade. On the basis of their comparative actions on isolated cerebral and peripheral arteries, calcium channel blockers such as verapamil may be a more rational choice in the treatment of cerebral ischemia than the barbiturates. PMID- 3864208 TI - [High-frequency jet ventilation. A new technic for artificial respiration]. PMID- 3864207 TI - Assessment of the pyrogenic potency of the thromboxane A2-mimetics, SQ26655 and U46619, and thromboxane B2 by intrapreoptic injection in the cat. AB - Using bilateral injection into the anterior hypothalamic/preoptic region of the conscious, indomethacin pretreated cat as an assay system, the pyrogenic activity of two thromboxane A2-mimetics (SQ26655 and U46619) and thromboxane B2 was assessed. PGE2 was used as a reference pyrogenic agent. Thromboxane B2 and both of the thromboxane A2-mimetics were at least 5263 times less potent than PGE2. The results do not support the putative role of thromboxanes as mediators of fever. PMID- 3864209 TI - Supernumerary teeth--before, during and after treatment. PMID- 3864210 TI - A proven new technique for chairside relining. PMID- 3864211 TI - Electron microscopic demonstration of non-mineralized and hypomineralized areas in dentin and cementum by silver methenamine staining of collagen. AB - An electron microscopic study on silver methenamine staining of hard dental tissues was made on a material that comprised human permanent teeth and primary tooth germs from human and porcine fetuses. It was demonstrated that silver stained material consisted of collagen fibrils. In predentin and precementum all collagen fibrils were stained, while collagen fibrils of dentin and cementum were unstained except for some fibrils of minor special areas such as Owen's contour lines, interglobular dentin, Tomes's granular layer, and in cementum small "interglobular-like" areas. It is concluded that silver methenamine visualizes collagen fibrils of hypo- and unmineralized areas in dental hard tissues and therefore may be used to demonstrate abnormal patterns of mineralization. Finally variations of silver methenamine stainability in relation to differences in material and methods were studied and discussed. PMID- 3864212 TI - Regression analysis of electromyographic activity of masticatory muscles versus bite force. AB - Electromyographic (EMG) activity of the superficial masseter and the anterior temporal muscles versus the bite force was studied in 10 young women. They were fully dentate and had no dysfunction of the stomatognathic system. The descending part of the trapezius muscle was also chosen for EMG registration. The average bite force between the first molars was 396 N (Newton). Steeper slopes for the EMG versus force regression curve at high contraction levels than at low contraction levels for the superficial masseter muscle may indicate that this muscle has a recruitment pattern that differs from that of the anterior temporal muscle. In the case of the anterior temporal muscle there was no difference between the slopes for the EMG-force regression at low and high contraction levels. There was significantly increased activity in the descending part of the trapezius muscle mainly during high bite force levels in half the subjects. PMID- 3864213 TI - Electron probe study of coronal dentin in red deer. AB - A topographic description of the concentration profiles of Ca, P, Mg, Zn, F, S and K in coronal dentin of red deer is given. The concentrations reported should be regarded as semiquantitative values. An area along the mesiodistal axis of the crowns showed lower concentrations of Ca and P and higher concentrations of Mg than the surrounding bulk of dentin. The inner dentin revealed downward slopes of the Ca, P and Mg profiles toward the pulpal cavity, whereas the Zn, F and usually also the S profiles showed elevations. Incidental findings were elevations of S and K profiles near the worn incisal edges. The walls of giant tubules, which are frequent in red deer dentin, showed in many cases modest elevations of the Ca, P, Mg and Zn profiles. The lumina of these tubules revealed in a few instances elevation of the S profiles. PMID- 3864215 TI - Purification of a protein component in extracts from supragingival dental calculus. AB - In the present study supragingival dental calculus of unknown age was collected from the mandibular incisors of three individuals and solubilized by EDTA. The extracts were examined by gel filtration, ionic exchange chromatography and amino acid analysis. A protein component with similar characteristics to the main protein component of the acquired enamel pellicle was a regular constituent of the calculus extracts from the three subjects. PMID- 3864214 TI - Ultrastructure of lingual enamel epithelium in rabbit permanent incisors. AB - The recent observation that the lingual surface of the permanent rabbit incisor, in contrast to the rodent incisor, is covered with enamel near the initially formed tip, initiated a histologic study of the enamel epithelium in this region. Tooth buds from fetal New Zealand white rabbits aged 27 and 30 days in utero were processed for transmission electron microscopy. Examination of longitudinal and cross-sections revealed a transition of secretory ameloblasts to postsecretory ameloblasts on the facial aspect of the enamel organ. Incisally, the facial ameloblast layer was continuous with postsecretory ameloblasts on the lingual aspect. More apically on the lingual surface, a gradual transition between postsecretory and reduced ameloblasts occurred. This study shows that by day 27 in utero, the ameloblasts on the lingual aspect of the tooth are in the postsecretory and degenerative stages and that, by day 30, the enamel epithelium lingually has been replaced by cementum on the prismatic enamel and by connective tissue. PMID- 3864216 TI - Oligosaccharides obtained by partial hydrolysis of lipopolysaccharides from Leptotrichia buccalis. AB - Lipopolysaccharides (LPS) from Leptotrichia buccalis, strains L11, ATCC 14201 and ATCC 19616 were partially degraded with 1% acetic acid. The acid soluble polysaccharides were subjected to gel filtration. These experiments showed that the carbohydrate moiety of LPS from ATCC 14201 and ATCC 19616 were similar, consisting of a core oligosaccharide unsubstituted by 0-side chains containing galactose, glucose and D-glycero-D-manno-heptose as neutral sugars. The core analogous fraction isolated from L11 LPS contained the same three neutral sugars, but in different ratios. PMID- 3864217 TI - Dental erosions in relation to lactovegetarian diet. AB - The subjects of this study were 26 lactovegetarians and their age- and sex matched controls. Clinical and radiologic examinations were made and samples of wax-stimulated whole saliva were collected. Dental erosions were recorded and documented with photographs and plaster models. Incipient, moderate and grave erosive defects were observed in 26.9%, 19.2% and 30.8% of the lactovegetarians, respectively. In controls, however, no erosions were observed. When tested by multiple linear regression analysis, the main factors affecting dental erosions were the rate of flow of saliva, and consumption of vinegar and vinegar conserves, citrus fruits and acidic berries. PMID- 3864218 TI - Snuff-induced lesions in Finnish recruits. AB - Snuff-induced lesions from 21 snuff users were studied clinically, histologically and by electron microscopy. Clinically most lesions appeared coarsely wrinkled, grayish white and slightly elevated. All lesions were found in the upper vestibular area. Histologically, epithelial thickening, acanthosis, vacuolation of surface cells and a slight subepithelial inflammatory reaction were seen. The electron microscopic findings revealed an intact basement lamina, increased tonofilament concentration moving up towards the surface of the epithelium, widening of intercellular spaces in the spinous cell layer and partial keratinization of surface cells. The salivary flow of resting saliva showed a slightly significant increase compared to controls. That of stimulated saliva was not significantly increased among snuff users. PMID- 3864219 TI - Fluoride release from a fluoride-containing amalgam in vivo. AB - Six test subjects using a low fluoride diet collected saliva samples each morning for 1 wk to determine the normal fluoride concentration. During the following 8 wk an acrylic plate, containing amalgam "fillings" corresponding to 6 MOD amalgams in premolars, was worn each night. Saliva samples were collected every morning and analyzed with a fluoride-ion electrode. Normal fluoride values ranged from 1.22 microM to 0.57 microM. The first days after insertion of the plates the fluoride concentration ranged from 91.06 microM to 12.26 microM in the subjects. The following 25-30 days there was an exponential decline of the fluoride concentration in saliva with a half-life of 6 to 7 days. The fluoride level was significantly higher (P less than 0.01) than basal levels in all subjects during this period. The following 20-25 days the fluoride level decreased more slowly, approaching the basal level. One subject had a significantly higher fluoride level for all 8 wk. Since the saliva fluoride concentrations registered seem to be sufficient to enhance remineralization, it is concluded that restorations with this material may have a favorable effect not only on secondary caries, but on any initial demineralization in the mouth.